Compare commits
No commits in common. "eea53e7113bc4993d7cdc9cb013c2fce93f3ea74" and "b965635d05963e8f7fdc4c6d735e5afb962b848d" have entirely different histories.
eea53e7113
...
b965635d05
@ -68,9 +68,8 @@ install:
|
||||
- cabal install --installdir=$HOME/.cabal/bin doctest
|
||||
|
||||
script:
|
||||
- (cd unix && autoreconf -fi)
|
||||
- cabal build --enable-tests all
|
||||
- cabal run spec
|
||||
- cabal test all
|
||||
- ./hpath/run-doctests.sh
|
||||
- ./hpath-filepath/run-doctests.sh
|
||||
- (cd hpath && cabal check)
|
||||
|
@ -3,7 +3,6 @@ packages: ./hpath
|
||||
./hpath-filepath
|
||||
./hpath-io
|
||||
./hpath-posix
|
||||
./unix
|
||||
|
||||
package hpath-io
|
||||
ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16
|
||||
|
@ -1150,8 +1150,7 @@ getDirsFiles' :: RawFilePath -- ^ dir to read
|
||||
getDirsFiles' fp = do
|
||||
fd <- openFd fp SPI.ReadOnly [SPDF.oNofollow] Nothing
|
||||
rawContents <- getDirectoryContents' fd
|
||||
fmap catMaybes $ for rawContents $ \(_, f) -> do
|
||||
putStrLn $ "getDirsFiles'" ++ (show f)
|
||||
fmap catMaybes $ for rawContents $ \(_, f) ->
|
||||
if FP.isSpecialDirectoryEntry f then pure Nothing else pure $ Just f
|
||||
|
||||
|
||||
|
@ -34,7 +34,6 @@ library
|
||||
build-depends: base >= 4.8 && <5
|
||||
, IfElse
|
||||
, bytestring >= 0.10
|
||||
, deepseq
|
||||
, exceptions >= 0.10
|
||||
, hpath-filepath >= 0.10.3
|
||||
, safe-exceptions >= 0.1
|
||||
|
@ -30,6 +30,8 @@ module System.Posix.RawFilePath.Directory.Traversals (
|
||||
|
||||
-- lower-level stuff
|
||||
, readDirEnt
|
||||
, packDirStream
|
||||
, unpackDirStream
|
||||
, fdOpendir
|
||||
|
||||
, realpath
|
||||
@ -39,7 +41,6 @@ module System.Posix.RawFilePath.Directory.Traversals (
|
||||
#if __GLASGOW_HASKELL__ < 710
|
||||
import Control.Applicative ((<$>))
|
||||
#endif
|
||||
import Control.DeepSeq
|
||||
import Control.Monad
|
||||
import System.Posix.FilePath ((</>))
|
||||
import System.Posix.Foreign
|
||||
@ -50,11 +51,11 @@ import Control.Exception
|
||||
import qualified Data.ByteString.Char8 as BS
|
||||
import System.Posix.ByteString.FilePath
|
||||
import System.Posix.Directory.ByteString as PosixBS
|
||||
import System.Posix.Directory.Common
|
||||
import System.Posix.Files.ByteString
|
||||
|
||||
import System.IO.Unsafe
|
||||
import "unix" System.Posix.IO.ByteString (closeFd)
|
||||
import Unsafe.Coerce (unsafeCoerce)
|
||||
import Foreign.C.Error
|
||||
import Foreign.C.String
|
||||
import Foreign.C.Types
|
||||
@ -146,6 +147,18 @@ actOnDirContents pathRelToTop b f =
|
||||
----------------------------------------------------------
|
||||
-- dodgy stuff
|
||||
|
||||
type CDir = ()
|
||||
type CDirent = ()
|
||||
|
||||
-- Posix doesn't export DirStream, so to re-use that type we need to use
|
||||
-- unsafeCoerce. It's just a newtype, so this is a legitimate usage.
|
||||
-- ugly trick.
|
||||
unpackDirStream :: DirStream -> Ptr CDir
|
||||
unpackDirStream = unsafeCoerce
|
||||
|
||||
packDirStream :: Ptr CDir -> DirStream
|
||||
packDirStream = unsafeCoerce
|
||||
|
||||
-- the __hscore_* functions are defined in the unix package. We can import them and let
|
||||
-- the linker figure it out.
|
||||
foreign import ccall unsafe "__hscore_readdir"
|
||||
@ -164,14 +177,14 @@ foreign import ccall "realpath"
|
||||
c_realpath :: CString -> CString -> IO CString
|
||||
|
||||
foreign import ccall unsafe "fdopendir"
|
||||
c_fdopendir :: Posix.Fd -> IO (Ptr CDir)
|
||||
c_fdopendir :: Posix.Fd -> IO (Ptr ())
|
||||
|
||||
----------------------------------------------------------
|
||||
-- less dodgy but still lower-level
|
||||
|
||||
|
||||
readDirEnt :: DirStream -> IO (DirType, RawFilePath)
|
||||
readDirEnt (DirStream dirp) =
|
||||
readDirEnt (unpackDirStream -> dirp) =
|
||||
alloca $ \ptr_dEnt -> loop ptr_dEnt
|
||||
where
|
||||
loop ptr_dEnt = do
|
||||
@ -180,14 +193,12 @@ readDirEnt (DirStream dirp) =
|
||||
if (r == 0)
|
||||
then do
|
||||
dEnt <- peek ptr_dEnt
|
||||
putStrLn $ "readDirEnt dEnt " ++ (show dEnt)
|
||||
if (dEnt == nullPtr)
|
||||
then return (dtUnknown,BS.empty)
|
||||
else do
|
||||
dName <- c_name dEnt >>= peekFilePath >>= evaluate . force
|
||||
dName <- c_name dEnt >>= peekFilePath
|
||||
dType <- c_type dEnt
|
||||
c_freeDirEnt dEnt
|
||||
putStrLn $ "readDirEnt" ++ (show dName)
|
||||
return (dType, dName)
|
||||
else do
|
||||
errno <- getErrno
|
||||
@ -214,7 +225,7 @@ getDirectoryContents path =
|
||||
-- |Binding to @fdopendir(3)@.
|
||||
fdOpendir :: Posix.Fd -> IO DirStream
|
||||
fdOpendir fd =
|
||||
DirStream <$> throwErrnoIfNull "fdOpendir" (c_fdopendir fd)
|
||||
packDirStream <$> throwErrnoIfNull "fdOpendir" (c_fdopendir fd)
|
||||
|
||||
|
||||
-- |Like `getDirectoryContents` except for a file descriptor.
|
||||
|
31
unix/LICENSE
31
unix/LICENSE
@ -1,31 +0,0 @@
|
||||
The Glasgow Haskell Compiler License
|
||||
|
||||
Copyright 2004, The University Court of the University of Glasgow.
|
||||
All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are met:
|
||||
|
||||
- Redistributions of source code must retain the above copyright notice,
|
||||
this list of conditions and the following disclaimer.
|
||||
|
||||
- Redistributions in binary form must reproduce the above copyright notice,
|
||||
this list of conditions and the following disclaimer in the documentation
|
||||
and/or other materials provided with the distribution.
|
||||
|
||||
- Neither name of the University nor the names of its contributors may be
|
||||
used to endorse or promote products derived from this software without
|
||||
specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY COURT OF THE UNIVERSITY OF
|
||||
GLASGOW AND THE CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
UNIVERSITY COURT OF THE UNIVERSITY OF GLASGOW OR THE CONTRIBUTORS BE LIABLE
|
||||
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
|
||||
DAMAGE.
|
@ -1,15 +0,0 @@
|
||||
The `unix` Package [![Hackage](https://img.shields.io/hackage/v/unix.svg)](https://hackage.haskell.org/package/unix) [![Build Status](https://travis-ci.org/haskell/unix.svg)](https://travis-ci.org/haskell/unix)
|
||||
==================
|
||||
|
||||
See [`unix` on Hackage](http://hackage.haskell.org/package/unix) for
|
||||
more information.
|
||||
|
||||
Installing from Git
|
||||
-------------------
|
||||
|
||||
To build this package using Cabal directly from Git, you must run
|
||||
`autoreconf -i` before the usual Cabal build steps (`cabal
|
||||
{configure,build,install}`). The program `autoreconf` is part of
|
||||
[GNU autoconf](http://www.gnu.org/software/autoconf/). There is no
|
||||
need to run the `configure` script: `cabal configure` will do this for
|
||||
you.
|
@ -1,6 +0,0 @@
|
||||
module Main (main) where
|
||||
|
||||
import Distribution.Simple
|
||||
|
||||
main :: IO ()
|
||||
main = defaultMainWithHooks autoconfUserHooks
|
@ -1,189 +0,0 @@
|
||||
{-# LANGUAGE CPP #-}
|
||||
{-# LANGUAGE Safe #-}
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- <http://pubs.opengroup.org/onlinepubs/9699919799/ POSIX.1-2008> support
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix (
|
||||
module System.Posix.Types,
|
||||
module System.Posix.Signals,
|
||||
module System.Posix.Directory,
|
||||
module System.Posix.Files,
|
||||
module System.Posix.Unistd,
|
||||
module System.Posix.IO,
|
||||
module System.Posix.Env,
|
||||
module System.Posix.Process,
|
||||
module System.Posix.Temp,
|
||||
module System.Posix.Terminal,
|
||||
module System.Posix.Time,
|
||||
module System.Posix.User,
|
||||
module System.Posix.Resource,
|
||||
module System.Posix.Semaphore,
|
||||
module System.Posix.SharedMem,
|
||||
module System.Posix.DynamicLinker,
|
||||
-- XXX 'Module' type clashes with GHC
|
||||
-- module System.Posix.DynamicLinker.Module
|
||||
) where
|
||||
|
||||
import System.Posix.Types
|
||||
import System.Posix.Signals
|
||||
import System.Posix.Directory
|
||||
import System.Posix.Files
|
||||
import System.Posix.Unistd
|
||||
import System.Posix.Process
|
||||
import System.Posix.IO
|
||||
import System.Posix.Env
|
||||
import System.Posix.Temp
|
||||
import System.Posix.Terminal
|
||||
import System.Posix.Time
|
||||
import System.Posix.User
|
||||
import System.Posix.Resource
|
||||
import System.Posix.Semaphore
|
||||
import System.Posix.SharedMem
|
||||
-- XXX: bad planning, we have two constructors called "Default"
|
||||
import System.Posix.DynamicLinker hiding (Default)
|
||||
--import System.Posix.DynamicLinker.Module
|
||||
|
||||
{- TODO
|
||||
|
||||
Here we detail our support for the IEEE Std 1003.1-2001 standard. For
|
||||
each header file defined by the standard, we categorise its
|
||||
functionality as
|
||||
|
||||
- "supported"
|
||||
|
||||
Full equivalent functionality is provided by the specified Haskell
|
||||
module.
|
||||
|
||||
- "unsupported" (functionality not provided by a Haskell module)
|
||||
|
||||
The functionality is not currently provided.
|
||||
|
||||
- "to be supported"
|
||||
|
||||
Currently unsupported, but support is planned for the future.
|
||||
|
||||
Exceptions are listed where appropriate.
|
||||
|
||||
Interfaces supported
|
||||
--------------------
|
||||
|
||||
unix package:
|
||||
|
||||
dirent.h System.Posix.Directory
|
||||
dlfcn.h System.Posix.DynamicLinker
|
||||
errno.h Foreign.C.Error
|
||||
fcntl.h System.Posix.IO
|
||||
signal.h System.Posix.Signals
|
||||
sys/stat.h System.Posix.Files
|
||||
sys/times.h System.Posix.Process
|
||||
sys/types.h System.Posix.Types (with exceptions...)
|
||||
sys/utsname.h System.Posix.Unistd
|
||||
sys/wait.h System.Posix.Process
|
||||
termios.h System.Posix.Terminal (check exceptions)
|
||||
unistd.h System.Posix.*
|
||||
utime.h System.Posix.Files
|
||||
pwd.h System.Posix.User
|
||||
grp.h System.Posix.User
|
||||
stdlib.h: System.Posix.Env (getenv()/setenv()/unsetenv())
|
||||
System.Posix.Temp (mkstemp())
|
||||
sys/resource.h: System.Posix.Resource (get/setrlimit() only)
|
||||
|
||||
regex-posix package:
|
||||
|
||||
regex.h Text.Regex.Posix
|
||||
|
||||
network package:
|
||||
|
||||
arpa/inet.h
|
||||
net/if.h
|
||||
netinet/in.h
|
||||
netinet/tcp.h
|
||||
sys/socket.h
|
||||
sys/un.h
|
||||
|
||||
To be supported
|
||||
---------------
|
||||
|
||||
limits.h (pathconf()/fpathconf() already done)
|
||||
poll.h
|
||||
sys/resource.h (getrusage(): use instead of times() for getProcessTimes?)
|
||||
sys/select.h
|
||||
sys/statvfs.h (?)
|
||||
sys/time.h (but maybe not the itimer?)
|
||||
time.h (System.Posix.Time)
|
||||
stdio.h (popen only: System.Posix.IO)
|
||||
sys/mman.h
|
||||
|
||||
Unsupported interfaces
|
||||
----------------------
|
||||
|
||||
aio.h
|
||||
assert.h
|
||||
complex.h
|
||||
cpio.h
|
||||
ctype.h
|
||||
fenv.h
|
||||
float.h
|
||||
fmtmsg.h
|
||||
fnmatch.h
|
||||
ftw.h
|
||||
glob.h
|
||||
iconv.h
|
||||
inttypes.h
|
||||
iso646.h
|
||||
langinfo.h
|
||||
libgen.h
|
||||
locale.h (see System.Locale)
|
||||
math.h
|
||||
monetary.h
|
||||
mqueue.h
|
||||
ndbm.h
|
||||
netdb.h
|
||||
nl_types.h
|
||||
pthread.h
|
||||
sched.h
|
||||
search.h
|
||||
semaphore.h
|
||||
setjmp.h
|
||||
spawn.h
|
||||
stdarg.h
|
||||
stdbool.h
|
||||
stddef.h
|
||||
stdint.h
|
||||
stdio.h except: popen()
|
||||
stdlib.h except: exit(): System.Posix.Process
|
||||
free()/malloc(): Foreign.Marshal.Alloc
|
||||
getenv()/setenv(): ?? System.Environment
|
||||
rand() etc.: System.Random
|
||||
string.h
|
||||
strings.h
|
||||
stropts.h
|
||||
sys/ipc.h
|
||||
sys/msg.h
|
||||
sys/sem.h
|
||||
sys/shm.h
|
||||
sys/timeb.h
|
||||
sys/uio.h
|
||||
syslog.h
|
||||
tar.h
|
||||
tgmath.h
|
||||
trace.h
|
||||
ucontext.h
|
||||
ulimit.h
|
||||
utmpx.h
|
||||
wchar.h
|
||||
wctype.h
|
||||
wordexp.h
|
||||
|
||||
-}
|
@ -1,69 +0,0 @@
|
||||
{-# LANGUAGE CPP #-}
|
||||
{-# LANGUAGE Safe #-}
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.ByteString
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- <http://pubs.opengroup.org/onlinepubs/9699919799/ POSIX.1-2008>
|
||||
-- support with 'ByteString' file paths and environment strings.
|
||||
--
|
||||
-- This module exports exactly the same API as "System.Posix", except
|
||||
-- that all file paths and environment strings are represented by
|
||||
-- 'ByteString' instead of 'String'. The "System.Posix" API
|
||||
-- implicitly translates all file paths and environment strings using
|
||||
-- the locale encoding, whereas this version of the API does no
|
||||
-- encoding or decoding and works directly in terms of raw bytes.
|
||||
--
|
||||
-- Note that if you do need to interpret file paths or environment
|
||||
-- strings as text, then some Unicode encoding or decoding should be
|
||||
-- applied first.
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.ByteString (
|
||||
System.Posix.ByteString.FilePath.RawFilePath,
|
||||
module System.Posix.Types,
|
||||
module System.Posix.Signals,
|
||||
module System.Posix.Directory.ByteString,
|
||||
module System.Posix.Files.ByteString,
|
||||
module System.Posix.Unistd,
|
||||
module System.Posix.IO.ByteString,
|
||||
module System.Posix.Env.ByteString,
|
||||
module System.Posix.Process.ByteString,
|
||||
module System.Posix.Temp.ByteString,
|
||||
module System.Posix.Terminal.ByteString,
|
||||
module System.Posix.Time,
|
||||
module System.Posix.User,
|
||||
module System.Posix.Resource,
|
||||
module System.Posix.Semaphore,
|
||||
module System.Posix.SharedMem,
|
||||
module System.Posix.DynamicLinker.ByteString,
|
||||
-- XXX 'Module' type clashes with GHC
|
||||
-- module System.Posix.DynamicLinker.Module.ByteString
|
||||
) where
|
||||
|
||||
import System.Posix.ByteString.FilePath
|
||||
import System.Posix.Types
|
||||
import System.Posix.Signals
|
||||
import System.Posix.Directory.ByteString
|
||||
import System.Posix.Files.ByteString
|
||||
import System.Posix.Unistd
|
||||
import System.Posix.Process.ByteString
|
||||
import System.Posix.IO.ByteString
|
||||
import System.Posix.Env.ByteString
|
||||
import System.Posix.Temp.ByteString
|
||||
import System.Posix.Terminal.ByteString
|
||||
import System.Posix.Time
|
||||
import System.Posix.User
|
||||
import System.Posix.Resource
|
||||
import System.Posix.Semaphore
|
||||
import System.Posix.SharedMem
|
||||
-- XXX: bad planning, we have two constructors called "Default"
|
||||
import System.Posix.DynamicLinker.ByteString hiding (Default)
|
||||
--import System.Posix.DynamicLinker.Module.ByteString
|
@ -1,127 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.ByteString.FilePath
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- Internal stuff: support for ByteString FilePaths
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.ByteString.FilePath (
|
||||
RawFilePath, withFilePath, peekFilePath, peekFilePathLen,
|
||||
throwErrnoPathIfMinus1Retry,
|
||||
throwErrnoPathIfMinus1Retry_,
|
||||
throwErrnoPathIfNullRetry,
|
||||
throwErrnoPathIfRetry,
|
||||
throwErrnoPath,
|
||||
throwErrnoPathIf,
|
||||
throwErrnoPathIf_,
|
||||
throwErrnoPathIfNull,
|
||||
throwErrnoPathIfMinus1,
|
||||
throwErrnoPathIfMinus1_
|
||||
) where
|
||||
|
||||
import Foreign hiding ( void )
|
||||
import Foreign.C hiding (
|
||||
throwErrnoPath,
|
||||
throwErrnoPathIf,
|
||||
throwErrnoPathIf_,
|
||||
throwErrnoPathIfNull,
|
||||
throwErrnoPathIfMinus1,
|
||||
throwErrnoPathIfMinus1_ )
|
||||
|
||||
import Control.Monad
|
||||
import Data.ByteString
|
||||
import Data.ByteString.Char8 as BC
|
||||
import Prelude hiding (FilePath)
|
||||
|
||||
-- | A literal POSIX file path
|
||||
type RawFilePath = ByteString
|
||||
|
||||
withFilePath :: RawFilePath -> (CString -> IO a) -> IO a
|
||||
withFilePath = useAsCString
|
||||
|
||||
peekFilePath :: CString -> IO RawFilePath
|
||||
peekFilePath = packCString
|
||||
|
||||
peekFilePathLen :: CStringLen -> IO RawFilePath
|
||||
peekFilePathLen = packCStringLen
|
||||
|
||||
|
||||
throwErrnoPathIfMinus1Retry :: (Eq a, Num a)
|
||||
=> String -> RawFilePath -> IO a -> IO a
|
||||
throwErrnoPathIfMinus1Retry loc path f = do
|
||||
throwErrnoPathIfRetry (== -1) loc path f
|
||||
|
||||
throwErrnoPathIfMinus1Retry_ :: (Eq a, Num a)
|
||||
=> String -> RawFilePath -> IO a -> IO ()
|
||||
throwErrnoPathIfMinus1Retry_ loc path f =
|
||||
void $ throwErrnoPathIfRetry (== -1) loc path f
|
||||
|
||||
throwErrnoPathIfNullRetry :: String -> RawFilePath -> IO (Ptr a) -> IO (Ptr a)
|
||||
throwErrnoPathIfNullRetry loc path f =
|
||||
throwErrnoPathIfRetry (== nullPtr) loc path f
|
||||
|
||||
throwErrnoPathIfRetry :: (a -> Bool) -> String -> RawFilePath -> IO a -> IO a
|
||||
throwErrnoPathIfRetry pr loc rpath f =
|
||||
do
|
||||
res <- f
|
||||
if pr res
|
||||
then do
|
||||
err <- getErrno
|
||||
if err == eINTR
|
||||
then throwErrnoPathIfRetry pr loc rpath f
|
||||
else throwErrnoPath loc rpath
|
||||
else return res
|
||||
|
||||
-- | as 'throwErrno', but exceptions include the given path when appropriate.
|
||||
--
|
||||
throwErrnoPath :: String -> RawFilePath -> IO a
|
||||
throwErrnoPath loc path =
|
||||
do
|
||||
errno <- getErrno
|
||||
ioError (errnoToIOError loc errno Nothing (Just (BC.unpack path)))
|
||||
|
||||
-- | as 'throwErrnoIf', but exceptions include the given path when
|
||||
-- appropriate.
|
||||
--
|
||||
throwErrnoPathIf :: (a -> Bool) -> String -> RawFilePath -> IO a -> IO a
|
||||
throwErrnoPathIf cond loc path f =
|
||||
do
|
||||
res <- f
|
||||
if cond res then throwErrnoPath loc path else return res
|
||||
|
||||
-- | as 'throwErrnoIf_', but exceptions include the given path when
|
||||
-- appropriate.
|
||||
--
|
||||
throwErrnoPathIf_ :: (a -> Bool) -> String -> RawFilePath -> IO a -> IO ()
|
||||
throwErrnoPathIf_ cond loc path f = void $ throwErrnoPathIf cond loc path f
|
||||
|
||||
-- | as 'throwErrnoIfNull', but exceptions include the given path when
|
||||
-- appropriate.
|
||||
--
|
||||
throwErrnoPathIfNull :: String -> RawFilePath -> IO (Ptr a) -> IO (Ptr a)
|
||||
throwErrnoPathIfNull = throwErrnoPathIf (== nullPtr)
|
||||
|
||||
-- | as 'throwErrnoIfMinus1', but exceptions include the given path when
|
||||
-- appropriate.
|
||||
--
|
||||
throwErrnoPathIfMinus1 :: (Eq a, Num a) => String -> RawFilePath -> IO a -> IO a
|
||||
throwErrnoPathIfMinus1 = throwErrnoPathIf (== -1)
|
||||
|
||||
-- | as 'throwErrnoIfMinus1_', but exceptions include the given path when
|
||||
-- appropriate.
|
||||
--
|
||||
throwErrnoPathIfMinus1_ :: (Eq a, Num a) => String -> RawFilePath -> IO a -> IO ()
|
||||
throwErrnoPathIfMinus1_ = throwErrnoPathIf_ (== -1)
|
@ -1,164 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
{-# LANGUAGE NondecreasingIndentation #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Directory
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- String-based POSIX directory support
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
-- hack copied from System.Posix.Files
|
||||
#if !defined(PATH_MAX)
|
||||
# define PATH_MAX 4096
|
||||
#endif
|
||||
|
||||
module System.Posix.Directory (
|
||||
-- * Creating and removing directories
|
||||
createDirectory, removeDirectory,
|
||||
|
||||
-- * Reading directories
|
||||
DirStream,
|
||||
openDirStream,
|
||||
readDirStream,
|
||||
rewindDirStream,
|
||||
closeDirStream,
|
||||
DirStreamOffset,
|
||||
#ifdef HAVE_TELLDIR
|
||||
tellDirStream,
|
||||
#endif
|
||||
#ifdef HAVE_SEEKDIR
|
||||
seekDirStream,
|
||||
#endif
|
||||
|
||||
-- * The working dirctory
|
||||
getWorkingDirectory,
|
||||
changeWorkingDirectory,
|
||||
changeWorkingDirectoryFd,
|
||||
) where
|
||||
|
||||
import System.IO.Error
|
||||
import System.Posix.Error
|
||||
import System.Posix.Types
|
||||
import Foreign
|
||||
import Foreign.C
|
||||
|
||||
import System.Posix.Directory.Common
|
||||
import System.Posix.Internals (withFilePath, peekFilePath)
|
||||
|
||||
-- | @createDirectory dir mode@ calls @mkdir@ to
|
||||
-- create a new directory, @dir@, with permissions based on
|
||||
-- @mode@.
|
||||
createDirectory :: FilePath -> FileMode -> IO ()
|
||||
createDirectory name mode =
|
||||
withFilePath name $ \s ->
|
||||
throwErrnoPathIfMinus1Retry_ "createDirectory" name (c_mkdir s mode)
|
||||
-- POSIX doesn't allow mkdir() to return EINTR, but it does on
|
||||
-- OS X (#5184), so we need the Retry variant here.
|
||||
|
||||
foreign import ccall unsafe "mkdir"
|
||||
c_mkdir :: CString -> CMode -> IO CInt
|
||||
|
||||
-- | @openDirStream dir@ calls @opendir@ to obtain a
|
||||
-- directory stream for @dir@.
|
||||
openDirStream :: FilePath -> IO DirStream
|
||||
openDirStream name =
|
||||
withFilePath name $ \s -> do
|
||||
dirp <- throwErrnoPathIfNullRetry "openDirStream" name $ c_opendir s
|
||||
return (DirStream dirp)
|
||||
|
||||
foreign import capi unsafe "HsUnix.h opendir"
|
||||
c_opendir :: CString -> IO (Ptr CDir)
|
||||
|
||||
-- | @readDirStream dp@ calls @readdir@ to obtain the
|
||||
-- next directory entry (@struct dirent@) for the open directory
|
||||
-- stream @dp@, and returns the @d_name@ member of that
|
||||
-- structure.
|
||||
readDirStream :: DirStream -> IO FilePath
|
||||
readDirStream (DirStream dirp) =
|
||||
alloca $ \ptr_dEnt -> loop ptr_dEnt
|
||||
where
|
||||
loop ptr_dEnt = do
|
||||
resetErrno
|
||||
r <- c_readdir dirp ptr_dEnt
|
||||
if (r == 0)
|
||||
then do dEnt <- peek ptr_dEnt
|
||||
if (dEnt == nullPtr)
|
||||
then return []
|
||||
else do
|
||||
entry <- (d_name dEnt >>= peekFilePath)
|
||||
c_freeDirEnt dEnt
|
||||
return entry
|
||||
else do errno <- getErrno
|
||||
if (errno == eINTR) then loop ptr_dEnt else do
|
||||
let (Errno eo) = errno
|
||||
if (eo == 0)
|
||||
then return []
|
||||
else throwErrno "readDirStream"
|
||||
|
||||
-- traversing directories
|
||||
foreign import ccall unsafe "__hscore_readdir"
|
||||
c_readdir :: Ptr CDir -> Ptr (Ptr CDirent) -> IO CInt
|
||||
|
||||
foreign import ccall unsafe "__hscore_free_dirent"
|
||||
c_freeDirEnt :: Ptr CDirent -> IO ()
|
||||
|
||||
foreign import ccall unsafe "__hscore_d_name"
|
||||
d_name :: Ptr CDirent -> IO CString
|
||||
|
||||
|
||||
-- | @getWorkingDirectory@ calls @getcwd@ to obtain the name
|
||||
-- of the current working directory.
|
||||
getWorkingDirectory :: IO FilePath
|
||||
getWorkingDirectory = go (#const PATH_MAX)
|
||||
where
|
||||
go bytes = do
|
||||
r <- allocaBytes bytes $ \buf -> do
|
||||
buf' <- c_getcwd buf (fromIntegral bytes)
|
||||
if buf' /= nullPtr
|
||||
then do s <- peekFilePath buf
|
||||
return (Just s)
|
||||
else do errno <- getErrno
|
||||
if errno == eRANGE
|
||||
-- we use Nothing to indicate that we should
|
||||
-- try again with a bigger buffer
|
||||
then return Nothing
|
||||
else throwErrno "getWorkingDirectory"
|
||||
maybe (go (2 * bytes)) return r
|
||||
|
||||
foreign import ccall unsafe "getcwd"
|
||||
c_getcwd :: Ptr CChar -> CSize -> IO (Ptr CChar)
|
||||
|
||||
-- | @changeWorkingDirectory dir@ calls @chdir@ to change
|
||||
-- the current working directory to @dir@.
|
||||
changeWorkingDirectory :: FilePath -> IO ()
|
||||
changeWorkingDirectory path =
|
||||
modifyIOError (`ioeSetFileName` path) $
|
||||
withFilePath path $ \s ->
|
||||
throwErrnoIfMinus1Retry_ "changeWorkingDirectory" (c_chdir s)
|
||||
|
||||
foreign import ccall unsafe "chdir"
|
||||
c_chdir :: CString -> IO CInt
|
||||
|
||||
removeDirectory :: FilePath -> IO ()
|
||||
removeDirectory path =
|
||||
modifyIOError (`ioeSetFileName` path) $
|
||||
withFilePath path $ \s ->
|
||||
throwErrnoIfMinus1Retry_ "removeDirectory" (c_rmdir s)
|
||||
|
||||
foreign import ccall unsafe "rmdir"
|
||||
c_rmdir :: CString -> IO CInt
|
@ -1,165 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
{-# LANGUAGE NondecreasingIndentation #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Directory.ByteString
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- String-based POSIX directory support
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
-- hack copied from System.Posix.Files
|
||||
#if !defined(PATH_MAX)
|
||||
# define PATH_MAX 4096
|
||||
#endif
|
||||
|
||||
module System.Posix.Directory.ByteString (
|
||||
-- * Creating and removing directories
|
||||
createDirectory, removeDirectory,
|
||||
|
||||
-- * Reading directories
|
||||
DirStream,
|
||||
openDirStream,
|
||||
readDirStream,
|
||||
rewindDirStream,
|
||||
closeDirStream,
|
||||
DirStreamOffset,
|
||||
#ifdef HAVE_TELLDIR
|
||||
tellDirStream,
|
||||
#endif
|
||||
#ifdef HAVE_SEEKDIR
|
||||
seekDirStream,
|
||||
#endif
|
||||
|
||||
-- * The working directory
|
||||
getWorkingDirectory,
|
||||
changeWorkingDirectory,
|
||||
changeWorkingDirectoryFd,
|
||||
) where
|
||||
|
||||
import System.IO.Error
|
||||
import System.Posix.Types
|
||||
import Foreign
|
||||
import Foreign.C
|
||||
|
||||
import Data.ByteString.Char8 as BC
|
||||
|
||||
import System.Posix.Directory.Common
|
||||
import System.Posix.ByteString.FilePath
|
||||
|
||||
-- | @createDirectory dir mode@ calls @mkdir@ to
|
||||
-- create a new directory, @dir@, with permissions based on
|
||||
-- @mode@.
|
||||
createDirectory :: RawFilePath -> FileMode -> IO ()
|
||||
createDirectory name mode =
|
||||
withFilePath name $ \s ->
|
||||
throwErrnoPathIfMinus1Retry_ "createDirectory" name (c_mkdir s mode)
|
||||
-- POSIX doesn't allow mkdir() to return EINTR, but it does on
|
||||
-- OS X (#5184), so we need the Retry variant here.
|
||||
|
||||
foreign import ccall unsafe "mkdir"
|
||||
c_mkdir :: CString -> CMode -> IO CInt
|
||||
|
||||
-- | @openDirStream dir@ calls @opendir@ to obtain a
|
||||
-- directory stream for @dir@.
|
||||
openDirStream :: RawFilePath -> IO DirStream
|
||||
openDirStream name =
|
||||
withFilePath name $ \s -> do
|
||||
dirp <- throwErrnoPathIfNullRetry "openDirStream" name $ c_opendir s
|
||||
return (DirStream dirp)
|
||||
|
||||
foreign import capi unsafe "HsUnix.h opendir"
|
||||
c_opendir :: CString -> IO (Ptr CDir)
|
||||
|
||||
-- | @readDirStream dp@ calls @readdir@ to obtain the
|
||||
-- next directory entry (@struct dirent@) for the open directory
|
||||
-- stream @dp@, and returns the @d_name@ member of that
|
||||
-- structure.
|
||||
readDirStream :: DirStream -> IO RawFilePath
|
||||
readDirStream (DirStream dirp) =
|
||||
alloca $ \ptr_dEnt -> loop ptr_dEnt
|
||||
where
|
||||
loop ptr_dEnt = do
|
||||
resetErrno
|
||||
r <- c_readdir dirp ptr_dEnt
|
||||
if (r == 0)
|
||||
then do dEnt <- peek ptr_dEnt
|
||||
if (dEnt == nullPtr)
|
||||
then return BC.empty
|
||||
else do
|
||||
entry <- (d_name dEnt >>= peekFilePath)
|
||||
c_freeDirEnt dEnt
|
||||
return entry
|
||||
else do errno <- getErrno
|
||||
if (errno == eINTR) then loop ptr_dEnt else do
|
||||
let (Errno eo) = errno
|
||||
if (eo == 0)
|
||||
then return BC.empty
|
||||
else throwErrno "readDirStream"
|
||||
|
||||
-- traversing directories
|
||||
foreign import ccall unsafe "__hscore_readdir"
|
||||
c_readdir :: Ptr CDir -> Ptr (Ptr CDirent) -> IO CInt
|
||||
|
||||
foreign import ccall unsafe "__hscore_free_dirent"
|
||||
c_freeDirEnt :: Ptr CDirent -> IO ()
|
||||
|
||||
foreign import ccall unsafe "__hscore_d_name"
|
||||
d_name :: Ptr CDirent -> IO CString
|
||||
|
||||
|
||||
-- | @getWorkingDirectory@ calls @getcwd@ to obtain the name
|
||||
-- of the current working directory.
|
||||
getWorkingDirectory :: IO RawFilePath
|
||||
getWorkingDirectory = go (#const PATH_MAX)
|
||||
where
|
||||
go bytes = do
|
||||
r <- allocaBytes bytes $ \buf -> do
|
||||
buf' <- c_getcwd buf (fromIntegral bytes)
|
||||
if buf' /= nullPtr
|
||||
then do s <- peekFilePath buf
|
||||
return (Just s)
|
||||
else do errno <- getErrno
|
||||
if errno == eRANGE
|
||||
-- we use Nothing to indicate that we should
|
||||
-- try again with a bigger buffer
|
||||
then return Nothing
|
||||
else throwErrno "getWorkingDirectory"
|
||||
maybe (go (2 * bytes)) return r
|
||||
|
||||
foreign import ccall unsafe "getcwd"
|
||||
c_getcwd :: Ptr CChar -> CSize -> IO (Ptr CChar)
|
||||
|
||||
-- | @changeWorkingDirectory dir@ calls @chdir@ to change
|
||||
-- the current working directory to @dir@.
|
||||
changeWorkingDirectory :: RawFilePath -> IO ()
|
||||
changeWorkingDirectory path =
|
||||
modifyIOError (`ioeSetFileName` (BC.unpack path)) $
|
||||
withFilePath path $ \s ->
|
||||
throwErrnoIfMinus1Retry_ "changeWorkingDirectory" (c_chdir s)
|
||||
|
||||
foreign import ccall unsafe "chdir"
|
||||
c_chdir :: CString -> IO CInt
|
||||
|
||||
removeDirectory :: RawFilePath -> IO ()
|
||||
removeDirectory path =
|
||||
modifyIOError (`ioeSetFileName` BC.unpack path) $
|
||||
withFilePath path $ \s ->
|
||||
throwErrnoIfMinus1Retry_ "removeDirectory" (c_rmdir s)
|
||||
|
||||
foreign import ccall unsafe "rmdir"
|
||||
c_rmdir :: CString -> IO CInt
|
@ -1,88 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Directory.Common
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX directory support
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
module System.Posix.Directory.Common (
|
||||
DirStream(..), CDir, CDirent, DirStreamOffset(..),
|
||||
rewindDirStream,
|
||||
closeDirStream,
|
||||
#ifdef HAVE_SEEKDIR
|
||||
seekDirStream,
|
||||
#endif
|
||||
#ifdef HAVE_TELLDIR
|
||||
tellDirStream,
|
||||
#endif
|
||||
changeWorkingDirectoryFd,
|
||||
) where
|
||||
|
||||
import System.Posix.Types
|
||||
import Foreign
|
||||
import Foreign.C
|
||||
|
||||
newtype DirStream = DirStream (Ptr CDir)
|
||||
|
||||
data {-# CTYPE "DIR" #-} CDir
|
||||
data {-# CTYPE "struct dirent" #-} CDirent
|
||||
|
||||
-- | @rewindDirStream dp@ calls @rewinddir@ to reposition
|
||||
-- the directory stream @dp@ at the beginning of the directory.
|
||||
rewindDirStream :: DirStream -> IO ()
|
||||
rewindDirStream (DirStream dirp) = c_rewinddir dirp
|
||||
|
||||
foreign import ccall unsafe "rewinddir"
|
||||
c_rewinddir :: Ptr CDir -> IO ()
|
||||
|
||||
-- | @closeDirStream dp@ calls @closedir@ to close
|
||||
-- the directory stream @dp@.
|
||||
closeDirStream :: DirStream -> IO ()
|
||||
closeDirStream (DirStream dirp) = do
|
||||
throwErrnoIfMinus1Retry_ "closeDirStream" (c_closedir dirp)
|
||||
|
||||
foreign import ccall unsafe "closedir"
|
||||
c_closedir :: Ptr CDir -> IO CInt
|
||||
|
||||
newtype DirStreamOffset = DirStreamOffset COff
|
||||
|
||||
#ifdef HAVE_SEEKDIR
|
||||
seekDirStream :: DirStream -> DirStreamOffset -> IO ()
|
||||
seekDirStream (DirStream dirp) (DirStreamOffset off) =
|
||||
c_seekdir dirp (fromIntegral off) -- TODO: check for CLong/COff overflow
|
||||
|
||||
foreign import ccall unsafe "seekdir"
|
||||
c_seekdir :: Ptr CDir -> CLong -> IO ()
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_TELLDIR
|
||||
tellDirStream :: DirStream -> IO DirStreamOffset
|
||||
tellDirStream (DirStream dirp) = do
|
||||
off <- c_telldir dirp
|
||||
return (DirStreamOffset (fromIntegral off)) -- TODO: check for overflow
|
||||
|
||||
foreign import ccall unsafe "telldir"
|
||||
c_telldir :: Ptr CDir -> IO CLong
|
||||
#endif
|
||||
|
||||
changeWorkingDirectoryFd :: Fd -> IO ()
|
||||
changeWorkingDirectoryFd (Fd fd) =
|
||||
throwErrnoIfMinus1Retry_ "changeWorkingDirectoryFd" (c_fchdir fd)
|
||||
|
||||
foreign import ccall unsafe "fchdir"
|
||||
c_fchdir :: CInt -> IO CInt
|
@ -1,72 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.DynamicLinker
|
||||
-- Copyright : (c) Volker Stolz <vs@foldr.org> 2003
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : vs@foldr.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- Dynamic linker support through dlopen()
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.DynamicLinker (
|
||||
|
||||
module System.Posix.DynamicLinker.Prim,
|
||||
dlopen,
|
||||
dlsym,
|
||||
dlerror,
|
||||
dlclose,
|
||||
withDL, withDL_,
|
||||
undl,
|
||||
)
|
||||
|
||||
-- Usage:
|
||||
-- ******
|
||||
--
|
||||
-- Let's assume you want to open a local shared library \'foo\' (.\/libfoo.so)
|
||||
-- offering a function
|
||||
-- @char \* mogrify (char\*,int)@
|
||||
-- and invoke @str = mogrify("test",1)@:
|
||||
--
|
||||
--
|
||||
-- type Fun = CString -> Int -> IO CString
|
||||
-- foreign import dynamic unsafe fun__ :: FunPtr Fun -> Fun
|
||||
--
|
||||
-- withDL "libfoo.so" [RTLD_NOW] \$ \\ mod -> do
|
||||
-- funptr <- dlsym mod "mogrify"
|
||||
-- let fun = fun__ funptr
|
||||
-- withCString "test" \$ \\ str -> do
|
||||
-- strptr <- fun str 1
|
||||
-- strstr <- peekCString strptr
|
||||
-- ...
|
||||
--
|
||||
|
||||
where
|
||||
|
||||
import System.Posix.DynamicLinker.Common
|
||||
import System.Posix.DynamicLinker.Prim
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import Control.Exception ( bracket )
|
||||
import Control.Monad ( liftM )
|
||||
import Foreign
|
||||
import System.Posix.Internals ( withFilePath )
|
||||
|
||||
dlopen :: FilePath -> [RTLDFlags] -> IO DL
|
||||
dlopen path flags = do
|
||||
withFilePath path $ \ p -> do
|
||||
liftM DLHandle $ throwDLErrorIf "dlopen" (== nullPtr) $ c_dlopen p (packRTLDFlags flags)
|
||||
|
||||
withDL :: FilePath -> [RTLDFlags] -> (DL -> IO a) -> IO a
|
||||
withDL file flags f = bracket (dlopen file flags) (dlclose) f
|
||||
|
||||
withDL_ :: FilePath -> [RTLDFlags] -> (DL -> IO a) -> IO ()
|
||||
withDL_ file flags f = withDL file flags f >> return ()
|
@ -1,73 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.DynamicLinker.ByteString
|
||||
-- Copyright : (c) Volker Stolz <vs@foldr.org> 2003
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : vs@foldr.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- Dynamic linker support through dlopen()
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.DynamicLinker.ByteString (
|
||||
|
||||
module System.Posix.DynamicLinker.Prim,
|
||||
dlopen,
|
||||
dlsym,
|
||||
dlerror,
|
||||
dlclose,
|
||||
withDL, withDL_,
|
||||
undl,
|
||||
)
|
||||
|
||||
-- Usage:
|
||||
-- ******
|
||||
--
|
||||
-- Let's assume you want to open a local shared library \'foo\' (.\/libfoo.so)
|
||||
-- offering a function
|
||||
-- @char \* mogrify (char\*,int)@
|
||||
-- and invoke @str = mogrify("test",1)@:
|
||||
--
|
||||
--
|
||||
-- type Fun = CString -> Int -> IO CString
|
||||
-- foreign import dynamic unsafe fun__ :: FunPtr Fun -> Fun
|
||||
--
|
||||
-- withDL "libfoo.so" [RTLD_NOW] \$ \\ mod -> do
|
||||
-- funptr <- dlsym mod "mogrify"
|
||||
-- let fun = fun__ funptr
|
||||
-- withCString "test" \$ \\ str -> do
|
||||
-- strptr <- fun str 1
|
||||
-- strstr <- peekCString strptr
|
||||
-- ...
|
||||
--
|
||||
|
||||
where
|
||||
|
||||
import System.Posix.DynamicLinker.Common
|
||||
import System.Posix.DynamicLinker.Prim
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import Control.Exception ( bracket )
|
||||
import Control.Monad ( liftM )
|
||||
import Foreign
|
||||
import System.Posix.ByteString.FilePath
|
||||
|
||||
dlopen :: RawFilePath -> [RTLDFlags] -> IO DL
|
||||
dlopen path flags = do
|
||||
withFilePath path $ \ p -> do
|
||||
liftM DLHandle $ throwDLErrorIf "dlopen" (== nullPtr) $ c_dlopen p (packRTLDFlags flags)
|
||||
|
||||
withDL :: RawFilePath -> [RTLDFlags] -> (DL -> IO a) -> IO a
|
||||
withDL file flags f = bracket (dlopen file flags) (dlclose) f
|
||||
|
||||
withDL_ :: RawFilePath -> [RTLDFlags] -> (DL -> IO a) -> IO ()
|
||||
withDL_ file flags f = withDL file flags f >> return ()
|
@ -1,92 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.DynamicLinker.Common
|
||||
-- Copyright : (c) Volker Stolz <vs@foldr.org> 2003
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : vs@foldr.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- Dynamic linker support through dlopen()
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.DynamicLinker.Common (
|
||||
|
||||
module System.Posix.DynamicLinker.Prim,
|
||||
dlsym,
|
||||
dlerror,
|
||||
dlclose,
|
||||
undl,
|
||||
throwDLErrorIf,
|
||||
Module(..)
|
||||
)
|
||||
|
||||
-- Usage:
|
||||
-- ******
|
||||
--
|
||||
-- Let's assume you want to open a local shared library \'foo\' (.\/libfoo.so)
|
||||
-- offering a function
|
||||
-- @char \* mogrify (char\*,int)@
|
||||
-- and invoke @str = mogrify("test",1)@:
|
||||
--
|
||||
--
|
||||
-- type Fun = CString -> Int -> IO CString
|
||||
-- foreign import dynamic unsafe fun__ :: FunPtr Fun -> Fun
|
||||
--
|
||||
-- withDL "libfoo.so" [RTLD_NOW] \$ \\ mod -> do
|
||||
-- funptr <- dlsym mod "mogrify"
|
||||
-- let fun = fun__ funptr
|
||||
-- withCString "test" \$ \\ str -> do
|
||||
-- strptr <- fun str 1
|
||||
-- strstr <- peekCString strptr
|
||||
-- ...
|
||||
--
|
||||
|
||||
where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import System.Posix.DynamicLinker.Prim
|
||||
import Foreign
|
||||
import Foreign.C
|
||||
|
||||
dlclose :: DL -> IO ()
|
||||
dlclose (DLHandle h) = throwDLErrorIf_ "dlclose" (/= 0) $ c_dlclose h
|
||||
dlclose h = error $ "dlclose: invalid argument" ++ (show h)
|
||||
|
||||
dlerror :: IO String
|
||||
dlerror = c_dlerror >>= peekCString
|
||||
|
||||
-- |'dlsym' returns the address binding of the symbol described in @symbol@,
|
||||
-- as it occurs in the shared object identified by @source@.
|
||||
|
||||
dlsym :: DL -> String -> IO (FunPtr a)
|
||||
dlsym source symbol = do
|
||||
withCAString symbol $ \ s -> do
|
||||
throwDLErrorIf "dlsym" (== nullFunPtr) $ c_dlsym (packDL source) s
|
||||
|
||||
-- |'undl' obtains the raw handle. You mustn't do something like
|
||||
-- @withDL mod flags $ liftM undl >>= \ p -> use p@
|
||||
|
||||
undl :: DL -> Ptr ()
|
||||
undl = packDL
|
||||
|
||||
throwDLErrorIf :: String -> (a -> Bool) -> IO a -> IO a
|
||||
throwDLErrorIf s p f = do
|
||||
r <- f
|
||||
if (p r)
|
||||
then dlerror >>= \ err -> ioError (userError ( s ++ ": " ++ err))
|
||||
else return r
|
||||
|
||||
throwDLErrorIf_ :: String -> (a -> Bool) -> IO a -> IO ()
|
||||
throwDLErrorIf_ s p f = throwDLErrorIf s p f >> return ()
|
||||
|
||||
-- abstract handle for dynamically loaded module (EXPORTED)
|
||||
--
|
||||
newtype Module = Module (Ptr ())
|
@ -1,121 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.DynamicLinker.Module
|
||||
-- Copyright : (c) Volker Stolz <vs@foldr.org> 2003
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : vs@foldr.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- DLOpen support, old API
|
||||
-- Derived from GModule.chs by M.Weber & M.Chakravarty which is part of c2hs
|
||||
-- I left the API more or less the same, mostly the flags are different.
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.DynamicLinker.Module (
|
||||
|
||||
-- Usage:
|
||||
-- ******
|
||||
--
|
||||
-- Let's assume you want to open a local shared library 'foo' (./libfoo.so)
|
||||
-- offering a function
|
||||
-- char * mogrify (char*,int)
|
||||
-- and invoke str = mogrify("test",1):
|
||||
--
|
||||
-- type Fun = CString -> Int -> IO CString
|
||||
-- foreign import dynamic unsafe fun__ :: FunPtr Fun -> Fun
|
||||
--
|
||||
-- withModule (Just ".") ("libfoo.so") [RTLD_NOW] $ \ mod -> do
|
||||
-- funptr <- moduleSymbol mod "mogrify"
|
||||
-- let fun = fun__ funptr
|
||||
-- withCString "test" $ \ str -> do
|
||||
-- strptr <- fun str 1
|
||||
-- strstr <- peekCString strptr
|
||||
-- ...
|
||||
|
||||
Module
|
||||
, moduleOpen -- :: String -> ModuleFlags -> IO Module
|
||||
, moduleSymbol -- :: Source -> String -> IO (FunPtr a)
|
||||
, moduleClose -- :: Module -> IO Bool
|
||||
, moduleError -- :: IO String
|
||||
, withModule -- :: Maybe String
|
||||
-- -> String
|
||||
-- -> [ModuleFlags ]
|
||||
-- -> (Module -> IO a)
|
||||
-- -> IO a
|
||||
, withModule_ -- :: Maybe String
|
||||
-- -> String
|
||||
-- -> [ModuleFlags]
|
||||
-- -> (Module -> IO a)
|
||||
-- -> IO ()
|
||||
)
|
||||
where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import System.Posix.DynamicLinker
|
||||
import System.Posix.DynamicLinker.Common
|
||||
import Foreign.Ptr ( Ptr, nullPtr, FunPtr )
|
||||
import System.Posix.Internals ( withFilePath )
|
||||
|
||||
unModule :: Module -> (Ptr ())
|
||||
unModule (Module adr) = adr
|
||||
|
||||
-- Opens a module (EXPORTED)
|
||||
--
|
||||
|
||||
moduleOpen :: String -> [RTLDFlags] -> IO Module
|
||||
moduleOpen file flags = do
|
||||
modPtr <- withFilePath file $ \ modAddr -> c_dlopen modAddr (packRTLDFlags flags)
|
||||
if (modPtr == nullPtr)
|
||||
then moduleError >>= \ err -> ioError (userError ("dlopen: " ++ err))
|
||||
else return $ Module modPtr
|
||||
|
||||
-- Gets a symbol pointer from a module (EXPORTED)
|
||||
--
|
||||
moduleSymbol :: Module -> String -> IO (FunPtr a)
|
||||
moduleSymbol file sym = dlsym (DLHandle (unModule file)) sym
|
||||
|
||||
-- Closes a module (EXPORTED)
|
||||
--
|
||||
moduleClose :: Module -> IO ()
|
||||
moduleClose file = dlclose (DLHandle (unModule file))
|
||||
|
||||
-- Gets a string describing the last module error (EXPORTED)
|
||||
--
|
||||
moduleError :: IO String
|
||||
moduleError = dlerror
|
||||
|
||||
|
||||
-- Convenience function, cares for module open- & closing
|
||||
-- additionally returns status of `moduleClose' (EXPORTED)
|
||||
--
|
||||
withModule :: Maybe String
|
||||
-> String
|
||||
-> [RTLDFlags]
|
||||
-> (Module -> IO a)
|
||||
-> IO a
|
||||
withModule mdir file flags p = do
|
||||
let modPath = case mdir of
|
||||
Nothing -> file
|
||||
Just dir -> dir ++ if ((head (reverse dir)) == '/')
|
||||
then file
|
||||
else ('/':file)
|
||||
modu <- moduleOpen modPath flags
|
||||
result <- p modu
|
||||
moduleClose modu
|
||||
return result
|
||||
|
||||
withModule_ :: Maybe String
|
||||
-> String
|
||||
-> [RTLDFlags]
|
||||
-> (Module -> IO a)
|
||||
-> IO ()
|
||||
withModule_ dir file flags p = withModule dir file flags p >>= \ _ -> return ()
|
@ -1,79 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.DynamicLinker.Module.ByteString
|
||||
-- Copyright : (c) Volker Stolz <vs@foldr.org> 2003
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : vs@foldr.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- DLOpen support, old API
|
||||
-- Derived from GModule.chs by M.Weber & M.Chakravarty which is part of c2hs
|
||||
-- I left the API more or less the same, mostly the flags are different.
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.DynamicLinker.Module.ByteString (
|
||||
|
||||
-- Usage:
|
||||
-- ******
|
||||
--
|
||||
-- Let's assume you want to open a local shared library 'foo' (./libfoo.so)
|
||||
-- offering a function
|
||||
-- char * mogrify (char*,int)
|
||||
-- and invoke str = mogrify("test",1):
|
||||
--
|
||||
-- type Fun = CString -> Int -> IO CString
|
||||
-- foreign import dynamic unsafe fun__ :: FunPtr Fun -> Fun
|
||||
--
|
||||
-- withModule (Just ".") ("libfoo.so") [RTLD_NOW] $ \ mod -> do
|
||||
-- funptr <- moduleSymbol mod "mogrify"
|
||||
-- let fun = fun__ funptr
|
||||
-- withCString "test" $ \ str -> do
|
||||
-- strptr <- fun str 1
|
||||
-- strstr <- peekCString strptr
|
||||
-- ...
|
||||
|
||||
Module
|
||||
, moduleOpen -- :: String -> ModuleFlags -> IO Module
|
||||
, moduleSymbol -- :: Source -> String -> IO (FunPtr a)
|
||||
, moduleClose -- :: Module -> IO Bool
|
||||
, moduleError -- :: IO String
|
||||
, withModule -- :: Maybe String
|
||||
-- -> String
|
||||
-- -> [ModuleFlags ]
|
||||
-- -> (Module -> IO a)
|
||||
-- -> IO a
|
||||
, withModule_ -- :: Maybe String
|
||||
-- -> String
|
||||
-- -> [ModuleFlags]
|
||||
-- -> (Module -> IO a)
|
||||
-- -> IO ()
|
||||
)
|
||||
where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import System.Posix.DynamicLinker.Module hiding (moduleOpen)
|
||||
import System.Posix.DynamicLinker.Prim
|
||||
import System.Posix.DynamicLinker.Common
|
||||
|
||||
import Foreign
|
||||
import System.Posix.ByteString.FilePath
|
||||
|
||||
-- Opens a module (EXPORTED)
|
||||
--
|
||||
|
||||
moduleOpen :: RawFilePath -> [RTLDFlags] -> IO Module
|
||||
moduleOpen file flags = do
|
||||
modPtr <- withFilePath file $ \ modAddr -> c_dlopen modAddr (packRTLDFlags flags)
|
||||
if (modPtr == nullPtr)
|
||||
then moduleError >>= \ err -> ioError (userError ("dlopen: " ++ err))
|
||||
else return $ Module modPtr
|
@ -1,123 +0,0 @@
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# OPTIONS_GHC -fno-warn-trustworthy-safe #-}
|
||||
#endif
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.DynamicLinker.Prim
|
||||
-- Copyright : (c) Volker Stolz <vs@foldr.org> 2003
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : vs@foldr.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- @dlopen(3)@ and friends
|
||||
-- Derived from @GModule.chs@ by M.Weber & M.Chakravarty which is part of c2hs.
|
||||
-- I left the API more or less the same, mostly the flags are different.
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.DynamicLinker.Prim (
|
||||
-- * low level API
|
||||
c_dlopen,
|
||||
c_dlsym,
|
||||
c_dlerror,
|
||||
c_dlclose,
|
||||
-- dlAddr, -- XXX NYI
|
||||
haveRtldNext,
|
||||
haveRtldLocal,
|
||||
packRTLDFlags,
|
||||
RTLDFlags(..),
|
||||
packDL,
|
||||
DL(..),
|
||||
)
|
||||
|
||||
where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import Data.Bits ( (.|.) )
|
||||
import Foreign.Ptr ( Ptr, FunPtr, nullPtr )
|
||||
import Foreign.C.Types
|
||||
import Foreign.C.String ( CString )
|
||||
|
||||
|
||||
-- |On some hosts (e.g. SuSe and Ubuntu Linux) @RTLD_NEXT@ (and
|
||||
-- @RTLD_DEFAULT@) are not visible without setting the macro
|
||||
-- @_GNU_SOURCE@. Since we don\'t want to define this macro, you can use
|
||||
-- the function 'haveRtldNext' to check wether the flag `Next` is
|
||||
-- available. Ideally, this will be optimized by the compiler so that it
|
||||
-- should be as efficient as an @#ifdef@.
|
||||
--
|
||||
-- If you fail to test the flag and use it although it is undefined,
|
||||
-- 'packDL' will throw an error.
|
||||
|
||||
haveRtldNext :: Bool
|
||||
|
||||
#ifdef HAVE_RTLDNEXT
|
||||
haveRtldNext = True
|
||||
foreign import ccall unsafe "__hsunix_rtldNext" rtldNext :: Ptr a
|
||||
#else /* HAVE_RTLDNEXT */
|
||||
haveRtldNext = False
|
||||
#endif /* HAVE_RTLDNEXT */
|
||||
|
||||
#ifdef HAVE_RTLDDEFAULT
|
||||
foreign import ccall unsafe "__hsunix_rtldDefault" rtldDefault :: Ptr a
|
||||
#endif /* HAVE_RTLDDEFAULT */
|
||||
|
||||
haveRtldLocal :: Bool
|
||||
haveRtldLocal = True
|
||||
{-# DEPRECATED haveRtldLocal "defaults to True" #-}
|
||||
|
||||
|
||||
-- |Flags for 'System.Posix.DynamicLinker.dlopen'.
|
||||
|
||||
data RTLDFlags
|
||||
= RTLD_LAZY
|
||||
| RTLD_NOW
|
||||
| RTLD_GLOBAL
|
||||
| RTLD_LOCAL
|
||||
deriving (Show, Read)
|
||||
|
||||
foreign import ccall unsafe "dlopen" c_dlopen :: CString -> CInt -> IO (Ptr ())
|
||||
foreign import ccall unsafe "dlsym" c_dlsym :: Ptr () -> CString -> IO (FunPtr a)
|
||||
foreign import ccall unsafe "dlerror" c_dlerror :: IO CString
|
||||
foreign import ccall unsafe "dlclose" c_dlclose :: (Ptr ()) -> IO CInt
|
||||
|
||||
packRTLDFlags :: [RTLDFlags] -> CInt
|
||||
packRTLDFlags flags = foldl (\ s f -> (packRTLDFlag f) .|. s) 0 flags
|
||||
|
||||
packRTLDFlag :: RTLDFlags -> CInt
|
||||
packRTLDFlag RTLD_LAZY = #const RTLD_LAZY
|
||||
packRTLDFlag RTLD_NOW = #const RTLD_NOW
|
||||
packRTLDFlag RTLD_GLOBAL = #const RTLD_GLOBAL
|
||||
packRTLDFlag RTLD_LOCAL = #const RTLD_LOCAL
|
||||
|
||||
|
||||
-- |Flags for 'System.Posix.DynamicLinker.dlsym'. Notice that 'Next'
|
||||
-- might not be available on your particular platform! Use
|
||||
-- 'haveRtldNext'.
|
||||
--
|
||||
-- If 'RTLD_DEFAULT' is not defined on your platform, 'packDL' 'Default'
|
||||
-- reduces to 'nullPtr'.
|
||||
|
||||
data DL = Null | Next | Default | DLHandle (Ptr ()) deriving (Show)
|
||||
|
||||
packDL :: DL -> Ptr ()
|
||||
packDL Null = nullPtr
|
||||
|
||||
#ifdef HAVE_RTLDNEXT
|
||||
packDL Next = rtldNext
|
||||
#else
|
||||
packDL Next = error "RTLD_NEXT not available"
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_RTLDDEFAULT
|
||||
packDL Default = rtldDefault
|
||||
#else
|
||||
packDL Default = nullPtr
|
||||
#endif
|
||||
|
||||
packDL (DLHandle h) = h
|
@ -1,205 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Env
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX environment support
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.Env (
|
||||
getEnv
|
||||
, getEnvDefault
|
||||
, getEnvironmentPrim
|
||||
, getEnvironment
|
||||
, setEnvironment
|
||||
, putEnv
|
||||
, setEnv
|
||||
, unsetEnv
|
||||
, clearEnv
|
||||
) where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import Foreign.C.Error (throwErrnoIfMinus1_)
|
||||
import Foreign.C.Types
|
||||
import Foreign.C.String
|
||||
import Foreign.Marshal.Array
|
||||
import Foreign.Ptr
|
||||
import Foreign.Storable
|
||||
import Control.Monad
|
||||
import Data.Maybe (fromMaybe)
|
||||
import System.Posix.Internals
|
||||
|
||||
#if !MIN_VERSION_base(4,7,0)
|
||||
-- needed for backported local 'newFilePath' binding in 'putEnv'
|
||||
import GHC.IO.Encoding (getFileSystemEncoding)
|
||||
import qualified GHC.Foreign as GHC (newCString)
|
||||
#endif
|
||||
|
||||
-- |'getEnv' looks up a variable in the environment.
|
||||
|
||||
getEnv ::
|
||||
String {- ^ variable name -} ->
|
||||
IO (Maybe String) {- ^ variable value -}
|
||||
getEnv name = do
|
||||
litstring <- withFilePath name c_getenv
|
||||
if litstring /= nullPtr
|
||||
then liftM Just $ peekFilePath litstring
|
||||
else return Nothing
|
||||
|
||||
-- |'getEnvDefault' is a wrapper around 'getEnv' where the
|
||||
-- programmer can specify a fallback if the variable is not found
|
||||
-- in the environment.
|
||||
|
||||
getEnvDefault ::
|
||||
String {- ^ variable name -} ->
|
||||
String {- ^ fallback value -} ->
|
||||
IO String {- ^ variable value or fallback value -}
|
||||
getEnvDefault name fallback = liftM (fromMaybe fallback) (getEnv name)
|
||||
|
||||
foreign import ccall unsafe "getenv"
|
||||
c_getenv :: CString -> IO CString
|
||||
|
||||
getEnvironmentPrim :: IO [String]
|
||||
getEnvironmentPrim = do
|
||||
c_environ <- getCEnviron
|
||||
-- environ can be NULL
|
||||
if c_environ == nullPtr
|
||||
then return []
|
||||
else do
|
||||
arr <- peekArray0 nullPtr c_environ
|
||||
mapM peekFilePath arr
|
||||
|
||||
getCEnviron :: IO (Ptr CString)
|
||||
#if HAVE__NSGETENVIRON
|
||||
-- You should not access @char **environ@ directly on Darwin in a bundle/shared library.
|
||||
-- See #2458 and http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man7/environ.7.html
|
||||
getCEnviron = nsGetEnviron >>= peek
|
||||
|
||||
foreign import ccall unsafe "_NSGetEnviron"
|
||||
nsGetEnviron :: IO (Ptr (Ptr CString))
|
||||
#else
|
||||
getCEnviron = peek c_environ_p
|
||||
foreign import ccall unsafe "&environ"
|
||||
c_environ_p :: Ptr (Ptr CString)
|
||||
#endif
|
||||
|
||||
-- |'getEnvironment' retrieves the entire environment as a
|
||||
-- list of @(key,value)@ pairs.
|
||||
|
||||
getEnvironment :: IO [(String,String)] {- ^ @[(key,value)]@ -}
|
||||
getEnvironment = do
|
||||
env <- getEnvironmentPrim
|
||||
return $ map (dropEq.(break ((==) '='))) env
|
||||
where
|
||||
dropEq (x,'=':ys) = (x,ys)
|
||||
dropEq (x,_) = error $ "getEnvironment: insane variable " ++ x
|
||||
|
||||
-- |'setEnvironment' resets the entire environment to the given list of
|
||||
-- @(key,value)@ pairs.
|
||||
|
||||
setEnvironment ::
|
||||
[(String,String)] {- ^ @[(key,value)]@ -} ->
|
||||
IO ()
|
||||
setEnvironment env = do
|
||||
clearEnv
|
||||
forM_ env $ \(key,value) ->
|
||||
setEnv key value True {-overwrite-}
|
||||
|
||||
-- |The 'unsetEnv' function deletes all instances of the variable name
|
||||
-- from the environment.
|
||||
|
||||
unsetEnv :: String {- ^ variable name -} -> IO ()
|
||||
#if HAVE_UNSETENV
|
||||
# if !UNSETENV_RETURNS_VOID
|
||||
unsetEnv name = withFilePath name $ \ s ->
|
||||
throwErrnoIfMinus1_ "unsetenv" (c_unsetenv s)
|
||||
|
||||
-- POSIX.1-2001 compliant unsetenv(3)
|
||||
foreign import capi unsafe "HsUnix.h unsetenv"
|
||||
c_unsetenv :: CString -> IO CInt
|
||||
# else
|
||||
unsetEnv name = withFilePath name c_unsetenv
|
||||
|
||||
-- pre-POSIX unsetenv(3) returning @void@
|
||||
foreign import capi unsafe "HsUnix.h unsetenv"
|
||||
c_unsetenv :: CString -> IO ()
|
||||
# endif
|
||||
#else
|
||||
unsetEnv name = putEnv (name ++ "=")
|
||||
#endif
|
||||
|
||||
-- |'putEnv' function takes an argument of the form @name=value@
|
||||
-- and is equivalent to @setEnv(key,value,True{-overwrite-})@.
|
||||
|
||||
putEnv :: String {- ^ "key=value" -} -> IO ()
|
||||
putEnv keyvalue = do s <- newFilePath keyvalue
|
||||
-- Do not free `s` after calling putenv.
|
||||
-- According to SUSv2, the string passed to putenv
|
||||
-- becomes part of the environment. #7342
|
||||
throwErrnoIfMinus1_ "putenv" (c_putenv s)
|
||||
#if !MIN_VERSION_base(4,7,0)
|
||||
where
|
||||
newFilePath :: FilePath -> IO CString
|
||||
newFilePath fp = getFileSystemEncoding >>= \enc -> GHC.newCString enc fp
|
||||
#endif
|
||||
|
||||
foreign import ccall unsafe "putenv"
|
||||
c_putenv :: CString -> IO CInt
|
||||
|
||||
{- |The 'setEnv' function inserts or resets the environment variable name in
|
||||
the current environment list. If the variable @name@ does not exist in the
|
||||
list, it is inserted with the given value. If the variable does exist,
|
||||
the argument @overwrite@ is tested; if @overwrite@ is @False@, the variable is
|
||||
not reset, otherwise it is reset to the given value.
|
||||
-}
|
||||
|
||||
setEnv ::
|
||||
String {- ^ variable name -} ->
|
||||
String {- ^ variable value -} ->
|
||||
Bool {- ^ overwrite -} ->
|
||||
IO ()
|
||||
#ifdef HAVE_SETENV
|
||||
setEnv key value ovrwrt = do
|
||||
withFilePath key $ \ keyP ->
|
||||
withFilePath value $ \ valueP ->
|
||||
throwErrnoIfMinus1_ "setenv" $
|
||||
c_setenv keyP valueP (fromIntegral (fromEnum ovrwrt))
|
||||
|
||||
foreign import ccall unsafe "setenv"
|
||||
c_setenv :: CString -> CString -> CInt -> IO CInt
|
||||
#else
|
||||
setEnv key value True = putEnv (key++"="++value)
|
||||
setEnv key value False = do
|
||||
res <- getEnv key
|
||||
case res of
|
||||
Just _ -> return ()
|
||||
Nothing -> putEnv (key++"="++value)
|
||||
#endif
|
||||
|
||||
-- |The 'clearEnv' function clears the environment of all name-value pairs.
|
||||
clearEnv :: IO ()
|
||||
#if HAVE_CLEARENV
|
||||
clearEnv = void c_clearenv
|
||||
|
||||
foreign import ccall unsafe "clearenv"
|
||||
c_clearenv :: IO Int
|
||||
#else
|
||||
-- Fallback to 'environ[0] = NULL'.
|
||||
clearEnv = do
|
||||
c_environ <- getCEnviron
|
||||
unless (c_environ == nullPtr) $
|
||||
poke c_environ nullPtr
|
||||
#endif
|
@ -1,184 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# OPTIONS_GHC -fno-warn-trustworthy-safe #-}
|
||||
#endif
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Env.ByteString
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX environment support
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.Env.ByteString (
|
||||
-- * Environment Variables
|
||||
getEnv
|
||||
, getEnvDefault
|
||||
, getEnvironmentPrim
|
||||
, getEnvironment
|
||||
, putEnv
|
||||
, setEnv
|
||||
, unsetEnv
|
||||
|
||||
-- * Program arguments
|
||||
, getArgs
|
||||
) where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import Foreign
|
||||
import Foreign.C
|
||||
import Control.Monad ( liftM )
|
||||
import Data.Maybe ( fromMaybe )
|
||||
|
||||
import qualified Data.ByteString as B
|
||||
import qualified Data.ByteString.Char8 as BC
|
||||
import Data.ByteString (ByteString)
|
||||
|
||||
-- |'getEnv' looks up a variable in the environment.
|
||||
|
||||
getEnv ::
|
||||
ByteString {- ^ variable name -} ->
|
||||
IO (Maybe ByteString) {- ^ variable value -}
|
||||
getEnv name = do
|
||||
litstring <- B.useAsCString name c_getenv
|
||||
if litstring /= nullPtr
|
||||
then liftM Just $ B.packCString litstring
|
||||
else return Nothing
|
||||
|
||||
-- |'getEnvDefault' is a wrapper around 'getEnv' where the
|
||||
-- programmer can specify a fallback if the variable is not found
|
||||
-- in the environment.
|
||||
|
||||
getEnvDefault ::
|
||||
ByteString {- ^ variable name -} ->
|
||||
ByteString {- ^ fallback value -} ->
|
||||
IO ByteString {- ^ variable value or fallback value -}
|
||||
getEnvDefault name fallback = liftM (fromMaybe fallback) (getEnv name)
|
||||
|
||||
foreign import ccall unsafe "getenv"
|
||||
c_getenv :: CString -> IO CString
|
||||
|
||||
getEnvironmentPrim :: IO [ByteString]
|
||||
getEnvironmentPrim = do
|
||||
c_environ <- getCEnviron
|
||||
arr <- peekArray0 nullPtr c_environ
|
||||
mapM B.packCString arr
|
||||
|
||||
getCEnviron :: IO (Ptr CString)
|
||||
#if HAVE__NSGETENVIRON
|
||||
-- You should not access @char **environ@ directly on Darwin in a bundle/shared library.
|
||||
-- See #2458 and http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man7/environ.7.html
|
||||
getCEnviron = nsGetEnviron >>= peek
|
||||
|
||||
foreign import ccall unsafe "_NSGetEnviron"
|
||||
nsGetEnviron :: IO (Ptr (Ptr CString))
|
||||
#else
|
||||
getCEnviron = peek c_environ_p
|
||||
|
||||
foreign import ccall unsafe "&environ"
|
||||
c_environ_p :: Ptr (Ptr CString)
|
||||
#endif
|
||||
|
||||
-- |'getEnvironment' retrieves the entire environment as a
|
||||
-- list of @(key,value)@ pairs.
|
||||
|
||||
getEnvironment :: IO [(ByteString,ByteString)] {- ^ @[(key,value)]@ -}
|
||||
getEnvironment = do
|
||||
env <- getEnvironmentPrim
|
||||
return $ map (dropEq.(BC.break ((==) '='))) env
|
||||
where
|
||||
dropEq (x,y)
|
||||
| BC.head y == '=' = (x,B.tail y)
|
||||
| otherwise = error $ "getEnvironment: insane variable " ++ BC.unpack x
|
||||
|
||||
-- |The 'unsetEnv' function deletes all instances of the variable name
|
||||
-- from the environment.
|
||||
|
||||
unsetEnv :: ByteString {- ^ variable name -} -> IO ()
|
||||
#if HAVE_UNSETENV
|
||||
# if !UNSETENV_RETURNS_VOID
|
||||
unsetEnv name = B.useAsCString name $ \ s ->
|
||||
throwErrnoIfMinus1_ "unsetenv" (c_unsetenv s)
|
||||
|
||||
-- POSIX.1-2001 compliant unsetenv(3)
|
||||
foreign import capi unsafe "HsUnix.h unsetenv"
|
||||
c_unsetenv :: CString -> IO CInt
|
||||
# else
|
||||
unsetEnv name = B.useAsCString name c_unsetenv
|
||||
|
||||
-- pre-POSIX unsetenv(3) returning @void@
|
||||
foreign import capi unsafe "HsUnix.h unsetenv"
|
||||
c_unsetenv :: CString -> IO ()
|
||||
# endif
|
||||
#else
|
||||
unsetEnv name = putEnv (name ++ "=")
|
||||
#endif
|
||||
|
||||
-- |'putEnv' function takes an argument of the form @name=value@
|
||||
-- and is equivalent to @setEnv(key,value,True{-overwrite-})@.
|
||||
|
||||
putEnv :: ByteString {- ^ "key=value" -} -> IO ()
|
||||
putEnv keyvalue = B.useAsCString keyvalue $ \s ->
|
||||
throwErrnoIfMinus1_ "putenv" (c_putenv s)
|
||||
|
||||
foreign import ccall unsafe "putenv"
|
||||
c_putenv :: CString -> IO CInt
|
||||
|
||||
{- |The 'setEnv' function inserts or resets the environment variable name in
|
||||
the current environment list. If the variable @name@ does not exist in the
|
||||
list, it is inserted with the given value. If the variable does exist,
|
||||
the argument @overwrite@ is tested; if @overwrite@ is @False@, the variable is
|
||||
not reset, otherwise it is reset to the given value.
|
||||
-}
|
||||
|
||||
setEnv ::
|
||||
ByteString {- ^ variable name -} ->
|
||||
ByteString {- ^ variable value -} ->
|
||||
Bool {- ^ overwrite -} ->
|
||||
IO ()
|
||||
#ifdef HAVE_SETENV
|
||||
setEnv key value ovrwrt = do
|
||||
B.useAsCString key $ \ keyP ->
|
||||
B.useAsCString value $ \ valueP ->
|
||||
throwErrnoIfMinus1_ "setenv" $
|
||||
c_setenv keyP valueP (fromIntegral (fromEnum ovrwrt))
|
||||
|
||||
foreign import ccall unsafe "setenv"
|
||||
c_setenv :: CString -> CString -> CInt -> IO CInt
|
||||
#else
|
||||
setEnv key value True = putEnv (key++"="++value)
|
||||
setEnv key value False = do
|
||||
res <- getEnv key
|
||||
case res of
|
||||
Just _ -> return ()
|
||||
Nothing -> putEnv (key++"="++value)
|
||||
#endif
|
||||
|
||||
-- | Computation 'getArgs' returns a list of the program's command
|
||||
-- line arguments (not including the program name), as 'ByteString's.
|
||||
--
|
||||
-- Unlike 'System.Environment.getArgs', this function does no Unicode
|
||||
-- decoding of the arguments; you get the exact bytes that were passed
|
||||
-- to the program by the OS. To interpret the arguments as text, some
|
||||
-- Unicode decoding should be applied.
|
||||
--
|
||||
getArgs :: IO [ByteString]
|
||||
getArgs =
|
||||
alloca $ \ p_argc ->
|
||||
alloca $ \ p_argv -> do
|
||||
getProgArgv p_argc p_argv
|
||||
p <- fromIntegral `liftM` peek p_argc
|
||||
argv <- peek p_argv
|
||||
peekArray (p - 1) (advancePtr argv 1) >>= mapM B.packCString
|
||||
|
||||
foreign import ccall unsafe "getProgArgv"
|
||||
getProgArgv :: Ptr CInt -> Ptr (Ptr CString) -> IO ()
|
@ -1,63 +0,0 @@
|
||||
{-# LANGUAGE CPP #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Error
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX error support
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.Error (
|
||||
throwErrnoPath,
|
||||
throwErrnoPathIf,
|
||||
throwErrnoPathIf_,
|
||||
throwErrnoPathIfRetry,
|
||||
throwErrnoPathIfNull,
|
||||
throwErrnoPathIfNullRetry,
|
||||
throwErrnoPathIfMinus1,
|
||||
throwErrnoPathIfMinus1_,
|
||||
throwErrnoPathIfMinus1Retry,
|
||||
throwErrnoPathIfMinus1Retry_
|
||||
) where
|
||||
|
||||
import Foreign hiding (void)
|
||||
import Foreign.C
|
||||
import Control.Monad
|
||||
|
||||
throwErrnoPathIfMinus1Retry :: (Eq a, Num a)
|
||||
=> String -> FilePath -> IO a -> IO a
|
||||
throwErrnoPathIfMinus1Retry loc path f =
|
||||
throwErrnoPathIfRetry (== -1) loc path f
|
||||
|
||||
throwErrnoPathIfMinus1Retry_ :: (Eq a, Num a)
|
||||
=> String -> FilePath -> IO a -> IO ()
|
||||
throwErrnoPathIfMinus1Retry_ loc path f =
|
||||
void $ throwErrnoPathIfRetry (== -1) loc path f
|
||||
|
||||
throwErrnoPathIfNullRetry :: String -> FilePath -> IO (Ptr a) -> IO (Ptr a)
|
||||
throwErrnoPathIfNullRetry loc path f =
|
||||
throwErrnoPathIfRetry (== nullPtr) loc path f
|
||||
|
||||
throwErrnoPathIfRetry :: (a -> Bool) -> String -> FilePath -> IO a -> IO a
|
||||
throwErrnoPathIfRetry pr loc path f =
|
||||
do
|
||||
res <- f
|
||||
if pr res
|
||||
then do
|
||||
err <- getErrno
|
||||
if err == eINTR
|
||||
then throwErrnoPathIfRetry pr loc path f
|
||||
else throwErrnoPath loc path
|
||||
else return res
|
||||
|
@ -1,104 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Fcntl
|
||||
-- Copyright : (c) The University of Glasgow 2014
|
||||
-- License : BSD-style (see the file LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX file control support
|
||||
--
|
||||
-- @since 2.7.1.0
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
module System.Posix.Fcntl (
|
||||
-- * File allocation
|
||||
Advice(..), fileAdvise,
|
||||
fileAllocate,
|
||||
) where
|
||||
|
||||
#if HAVE_POSIX_FALLOCATE || HAVE_POSIX_FADVISE
|
||||
import Foreign.C
|
||||
#endif
|
||||
import System.Posix.Types
|
||||
|
||||
#if !HAVE_POSIX_FALLOCATE
|
||||
import System.IO.Error ( ioeSetLocation )
|
||||
import GHC.IO.Exception ( unsupportedOperation )
|
||||
#endif
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- File control
|
||||
|
||||
-- | Advice parameter for 'fileAdvise' operation.
|
||||
--
|
||||
-- For more details, see documentation of @posix_fadvise(2)@.
|
||||
--
|
||||
-- @since 2.7.1.0
|
||||
data Advice
|
||||
= AdviceNormal
|
||||
| AdviceRandom
|
||||
| AdviceSequential
|
||||
| AdviceWillNeed
|
||||
| AdviceDontNeed
|
||||
| AdviceNoReuse
|
||||
deriving Eq
|
||||
|
||||
-- | Performs @posix_fadvise(2)@ operation on file-descriptor.
|
||||
--
|
||||
-- If platform does not provide @posix_fadvise(2)@ 'fileAdvise'
|
||||
-- becomes a no-op.
|
||||
--
|
||||
-- (use @#if HAVE_POSIX_FADVISE@ CPP guard to detect availability)
|
||||
--
|
||||
-- @since 2.7.1.0
|
||||
fileAdvise :: Fd -> FileOffset -> FileOffset -> Advice -> IO ()
|
||||
#if HAVE_POSIX_FADVISE
|
||||
fileAdvise fd off len adv = do
|
||||
throwErrnoIfMinus1_ "fileAdvise" (c_posix_fadvise (fromIntegral fd) (fromIntegral off) (fromIntegral len) (packAdvice adv))
|
||||
|
||||
foreign import capi safe "fcntl.h posix_fadvise"
|
||||
c_posix_fadvise :: CInt -> COff -> COff -> CInt -> IO CInt
|
||||
|
||||
packAdvice :: Advice -> CInt
|
||||
packAdvice AdviceNormal = (#const POSIX_FADV_NORMAL)
|
||||
packAdvice AdviceRandom = (#const POSIX_FADV_RANDOM)
|
||||
packAdvice AdviceSequential = (#const POSIX_FADV_SEQUENTIAL)
|
||||
packAdvice AdviceWillNeed = (#const POSIX_FADV_WILLNEED)
|
||||
packAdvice AdviceDontNeed = (#const POSIX_FADV_DONTNEED)
|
||||
packAdvice AdviceNoReuse = (#const POSIX_FADV_NOREUSE)
|
||||
#else
|
||||
fileAdvise _ _ _ _ = return ()
|
||||
#endif
|
||||
|
||||
-- | Performs @posix_fallocate(2)@ operation on file-descriptor.
|
||||
--
|
||||
-- Throws 'IOError' (\"unsupported operation\") if platform does not
|
||||
-- provide @posix_fallocate(2)@.
|
||||
--
|
||||
-- (use @#if HAVE_POSIX_FALLOCATE@ CPP guard to detect availability).
|
||||
--
|
||||
-- @since 2.7.1.0
|
||||
fileAllocate :: Fd -> FileOffset -> FileOffset -> IO ()
|
||||
#if HAVE_POSIX_FALLOCATE
|
||||
fileAllocate fd off len = do
|
||||
throwErrnoIfMinus1_ "fileAllocate" (c_posix_fallocate (fromIntegral fd) (fromIntegral off) (fromIntegral len))
|
||||
|
||||
foreign import capi safe "fcntl.h posix_fallocate"
|
||||
c_posix_fallocate :: CInt -> COff -> COff -> IO CInt
|
||||
#else
|
||||
{-# WARNING fileAllocate
|
||||
"operation will throw 'IOError' \"unsupported operation\" (CPP guard: @#if HAVE_POSIX_FALLOCATE@)" #-}
|
||||
fileAllocate _ _ _ = ioError (ioeSetLocation unsupportedOperation
|
||||
"fileAllocate")
|
||||
#endif
|
@ -1,448 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Files
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- Functions defined by the POSIX standards for manipulating and querying the
|
||||
-- file system. Names of underlying POSIX functions are indicated whenever
|
||||
-- possible. A more complete documentation of the POSIX functions together
|
||||
-- with a more detailed description of different error conditions are usually
|
||||
-- available in the system's manual pages or from
|
||||
-- <http://www.unix.org/version3/online.html> (free registration required).
|
||||
--
|
||||
-- When a function that calls an underlying POSIX function fails, the errno
|
||||
-- code is converted to an 'IOError' using 'Foreign.C.Error.errnoToIOError'.
|
||||
-- For a list of which errno codes may be generated, consult the POSIX
|
||||
-- documentation for the underlying function.
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
module System.Posix.Files (
|
||||
-- * File modes
|
||||
-- FileMode exported by System.Posix.Types
|
||||
unionFileModes, intersectFileModes,
|
||||
nullFileMode,
|
||||
ownerReadMode, ownerWriteMode, ownerExecuteMode, ownerModes,
|
||||
groupReadMode, groupWriteMode, groupExecuteMode, groupModes,
|
||||
otherReadMode, otherWriteMode, otherExecuteMode, otherModes,
|
||||
setUserIDMode, setGroupIDMode,
|
||||
stdFileMode, accessModes,
|
||||
fileTypeModes,
|
||||
blockSpecialMode, characterSpecialMode, namedPipeMode, regularFileMode,
|
||||
directoryMode, symbolicLinkMode, socketMode,
|
||||
|
||||
-- ** Setting file modes
|
||||
setFileMode, setFdMode, setFileCreationMask,
|
||||
|
||||
-- ** Checking file existence and permissions
|
||||
fileAccess, fileExist,
|
||||
|
||||
-- * File status
|
||||
FileStatus,
|
||||
-- ** Obtaining file status
|
||||
getFileStatus, getFdStatus, getSymbolicLinkStatus,
|
||||
-- ** Querying file status
|
||||
deviceID, fileID, fileMode, linkCount, fileOwner, fileGroup,
|
||||
specialDeviceID, fileSize, accessTime, modificationTime,
|
||||
statusChangeTime,
|
||||
accessTimeHiRes, modificationTimeHiRes, statusChangeTimeHiRes,
|
||||
isBlockDevice, isCharacterDevice, isNamedPipe, isRegularFile,
|
||||
isDirectory, isSymbolicLink, isSocket,
|
||||
|
||||
-- * Creation
|
||||
createNamedPipe,
|
||||
createDevice,
|
||||
|
||||
-- * Hard links
|
||||
createLink, removeLink,
|
||||
|
||||
-- * Symbolic links
|
||||
createSymbolicLink, readSymbolicLink,
|
||||
|
||||
-- * Renaming files
|
||||
rename,
|
||||
|
||||
-- * Changing file ownership
|
||||
setOwnerAndGroup, setFdOwnerAndGroup,
|
||||
#if HAVE_LCHOWN
|
||||
setSymbolicLinkOwnerAndGroup,
|
||||
#endif
|
||||
|
||||
-- * Changing file timestamps
|
||||
setFileTimes, setFileTimesHiRes,
|
||||
setFdTimesHiRes, setSymbolicLinkTimesHiRes,
|
||||
touchFile, touchFd, touchSymbolicLink,
|
||||
|
||||
-- * Setting file sizes
|
||||
setFileSize, setFdSize,
|
||||
|
||||
-- * Find system-specific limits for a file
|
||||
PathVar(..), getPathVar, getFdPathVar,
|
||||
) where
|
||||
|
||||
|
||||
import Foreign
|
||||
import Foreign.C
|
||||
|
||||
import System.Posix.Types
|
||||
import System.Posix.Files.Common
|
||||
import System.Posix.Error
|
||||
import System.Posix.Internals
|
||||
|
||||
import Data.Time.Clock.POSIX (POSIXTime)
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- chmod()
|
||||
|
||||
-- | @setFileMode path mode@ changes permission of the file given by @path@
|
||||
-- to @mode@. This operation may fail with 'throwErrnoPathIfMinus1_' if @path@
|
||||
-- doesn't exist or if the effective user ID of the current process is not that
|
||||
-- of the file's owner.
|
||||
--
|
||||
-- Note: calls @chmod@.
|
||||
setFileMode :: FilePath -> FileMode -> IO ()
|
||||
setFileMode name m =
|
||||
withFilePath name $ \s -> do
|
||||
throwErrnoPathIfMinus1_ "setFileMode" name (c_chmod s m)
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- access()
|
||||
|
||||
-- | @fileAccess name read write exec@ checks if the file (or other file system
|
||||
-- object) @name@ can be accessed for reading, writing and\/or executing. To
|
||||
-- check a permission set the corresponding argument to 'True'.
|
||||
--
|
||||
-- Note: calls @access@.
|
||||
fileAccess :: FilePath -> Bool -> Bool -> Bool -> IO Bool
|
||||
fileAccess name readOK writeOK execOK = access name flags
|
||||
where
|
||||
flags = read_f .|. write_f .|. exec_f
|
||||
read_f = if readOK then (#const R_OK) else 0
|
||||
write_f = if writeOK then (#const W_OK) else 0
|
||||
exec_f = if execOK then (#const X_OK) else 0
|
||||
|
||||
-- | Checks for the existence of the file.
|
||||
--
|
||||
-- Note: calls @access@.
|
||||
fileExist :: FilePath -> IO Bool
|
||||
fileExist name =
|
||||
withFilePath name $ \s -> do
|
||||
r <- c_access s (#const F_OK)
|
||||
if (r == 0)
|
||||
then return True
|
||||
else do err <- getErrno
|
||||
if (err == eNOENT)
|
||||
then return False
|
||||
else throwErrnoPath "fileExist" name
|
||||
|
||||
access :: FilePath -> CMode -> IO Bool
|
||||
access name flags =
|
||||
withFilePath name $ \s -> do
|
||||
r <- c_access s (fromIntegral flags)
|
||||
if (r == 0)
|
||||
then return True
|
||||
else do err <- getErrno
|
||||
if (err == eACCES || err == eROFS || err == eTXTBSY ||
|
||||
err == ePERM)
|
||||
then return False
|
||||
else throwErrnoPath "fileAccess" name
|
||||
|
||||
|
||||
-- | @getFileStatus path@ calls gets the @FileStatus@ information (user ID,
|
||||
-- size, access times, etc.) for the file @path@.
|
||||
--
|
||||
-- Note: calls @stat@.
|
||||
getFileStatus :: FilePath -> IO FileStatus
|
||||
getFileStatus path = do
|
||||
fp <- mallocForeignPtrBytes (#const sizeof(struct stat))
|
||||
withForeignPtr fp $ \p ->
|
||||
withFilePath path $ \s ->
|
||||
throwErrnoPathIfMinus1Retry_ "getFileStatus" path (c_stat s p)
|
||||
return (FileStatus fp)
|
||||
|
||||
-- | Acts as 'getFileStatus' except when the 'FilePath' refers to a symbolic
|
||||
-- link. In that case the @FileStatus@ information of the symbolic link itself
|
||||
-- is returned instead of that of the file it points to.
|
||||
--
|
||||
-- Note: calls @lstat@.
|
||||
getSymbolicLinkStatus :: FilePath -> IO FileStatus
|
||||
getSymbolicLinkStatus path = do
|
||||
fp <- mallocForeignPtrBytes (#const sizeof(struct stat))
|
||||
withForeignPtr fp $ \p ->
|
||||
withFilePath path $ \s ->
|
||||
throwErrnoPathIfMinus1_ "getSymbolicLinkStatus" path (c_lstat s p)
|
||||
return (FileStatus fp)
|
||||
|
||||
foreign import capi unsafe "HsUnix.h lstat"
|
||||
c_lstat :: CString -> Ptr CStat -> IO CInt
|
||||
|
||||
-- | @createNamedPipe fifo mode@
|
||||
-- creates a new named pipe, @fifo@, with permissions based on
|
||||
-- @mode@. May fail with 'throwErrnoPathIfMinus1_' if a file named @name@
|
||||
-- already exists or if the effective user ID of the current process doesn't
|
||||
-- have permission to create the pipe.
|
||||
--
|
||||
-- Note: calls @mkfifo@.
|
||||
createNamedPipe :: FilePath -> FileMode -> IO ()
|
||||
createNamedPipe name mode = do
|
||||
withFilePath name $ \s ->
|
||||
throwErrnoPathIfMinus1_ "createNamedPipe" name (c_mkfifo s mode)
|
||||
|
||||
-- | @createDevice path mode dev@ creates either a regular or a special file
|
||||
-- depending on the value of @mode@ (and @dev@). @mode@ will normally be either
|
||||
-- 'blockSpecialMode' or 'characterSpecialMode'. May fail with
|
||||
-- 'throwErrnoPathIfMinus1_' if a file named @name@ already exists or if the
|
||||
-- effective user ID of the current process doesn't have permission to create
|
||||
-- the file.
|
||||
--
|
||||
-- Note: calls @mknod@.
|
||||
createDevice :: FilePath -> FileMode -> DeviceID -> IO ()
|
||||
createDevice path mode dev =
|
||||
withFilePath path $ \s ->
|
||||
throwErrnoPathIfMinus1_ "createDevice" path (c_mknod s mode dev)
|
||||
|
||||
foreign import capi unsafe "HsUnix.h mknod"
|
||||
c_mknod :: CString -> CMode -> CDev -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Hard links
|
||||
|
||||
-- | @createLink old new@ creates a new path, @new@, linked to an existing file,
|
||||
-- @old@.
|
||||
--
|
||||
-- Note: calls @link@.
|
||||
createLink :: FilePath -> FilePath -> IO ()
|
||||
createLink name1 name2 =
|
||||
withFilePath name1 $ \s1 ->
|
||||
withFilePath name2 $ \s2 ->
|
||||
throwErrnoPathIfMinus1_ "createLink" name1 (c_link s1 s2)
|
||||
|
||||
-- | @removeLink path@ removes the link named @path@.
|
||||
--
|
||||
-- Note: calls @unlink@.
|
||||
removeLink :: FilePath -> IO ()
|
||||
removeLink name =
|
||||
withFilePath name $ \s ->
|
||||
throwErrnoPathIfMinus1_ "removeLink" name (c_unlink s)
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Symbolic Links
|
||||
|
||||
-- | @createSymbolicLink file1 file2@ creates a symbolic link named @file2@
|
||||
-- which points to the file @file1@.
|
||||
--
|
||||
-- Symbolic links are interpreted at run-time as if the contents of the link
|
||||
-- had been substituted into the path being followed to find a file or directory.
|
||||
--
|
||||
-- Note: calls @symlink@.
|
||||
createSymbolicLink :: FilePath -> FilePath -> IO ()
|
||||
createSymbolicLink file1 file2 =
|
||||
withFilePath file1 $ \s1 ->
|
||||
withFilePath file2 $ \s2 ->
|
||||
throwErrnoPathIfMinus1_ "createSymbolicLink" file2 (c_symlink s1 s2)
|
||||
|
||||
foreign import ccall unsafe "symlink"
|
||||
c_symlink :: CString -> CString -> IO CInt
|
||||
|
||||
-- ToDo: should really use SYMLINK_MAX, but not everyone supports it yet,
|
||||
-- and it seems that the intention is that SYMLINK_MAX is no larger than
|
||||
-- PATH_MAX.
|
||||
#if !defined(PATH_MAX)
|
||||
-- PATH_MAX is not defined on systems with unlimited path length.
|
||||
-- Ugly. Fix this.
|
||||
#define PATH_MAX 4096
|
||||
#endif
|
||||
|
||||
-- | Reads the @FilePath@ pointed to by the symbolic link and returns it.
|
||||
--
|
||||
-- Note: calls @readlink@.
|
||||
readSymbolicLink :: FilePath -> IO FilePath
|
||||
readSymbolicLink file =
|
||||
allocaArray0 (#const PATH_MAX) $ \buf -> do
|
||||
withFilePath file $ \s -> do
|
||||
len <- throwErrnoPathIfMinus1 "readSymbolicLink" file $
|
||||
c_readlink s buf (#const PATH_MAX)
|
||||
peekFilePathLen (buf,fromIntegral len)
|
||||
|
||||
foreign import ccall unsafe "readlink"
|
||||
c_readlink :: CString -> CString -> CSize -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Renaming files
|
||||
|
||||
-- | @rename old new@ renames a file or directory from @old@ to @new@.
|
||||
--
|
||||
-- Note: calls @rename@.
|
||||
rename :: FilePath -> FilePath -> IO ()
|
||||
rename name1 name2 =
|
||||
withFilePath name1 $ \s1 ->
|
||||
withFilePath name2 $ \s2 ->
|
||||
throwErrnoPathIfMinus1_ "rename" name1 (c_rename s1 s2)
|
||||
|
||||
foreign import ccall unsafe "rename"
|
||||
c_rename :: CString -> CString -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- chown()
|
||||
|
||||
-- | @setOwnerAndGroup path uid gid@ changes the owner and group of @path@ to
|
||||
-- @uid@ and @gid@, respectively.
|
||||
--
|
||||
-- If @uid@ or @gid@ is specified as -1, then that ID is not changed.
|
||||
--
|
||||
-- Note: calls @chown@.
|
||||
setOwnerAndGroup :: FilePath -> UserID -> GroupID -> IO ()
|
||||
setOwnerAndGroup name uid gid = do
|
||||
withFilePath name $ \s ->
|
||||
throwErrnoPathIfMinus1_ "setOwnerAndGroup" name (c_chown s uid gid)
|
||||
|
||||
foreign import ccall unsafe "chown"
|
||||
c_chown :: CString -> CUid -> CGid -> IO CInt
|
||||
|
||||
#if HAVE_LCHOWN
|
||||
-- | Acts as 'setOwnerAndGroup' but does not follow symlinks (and thus
|
||||
-- changes permissions on the link itself).
|
||||
--
|
||||
-- Note: calls @lchown@.
|
||||
setSymbolicLinkOwnerAndGroup :: FilePath -> UserID -> GroupID -> IO ()
|
||||
setSymbolicLinkOwnerAndGroup name uid gid = do
|
||||
withFilePath name $ \s ->
|
||||
throwErrnoPathIfMinus1_ "setSymbolicLinkOwnerAndGroup" name
|
||||
(c_lchown s uid gid)
|
||||
|
||||
foreign import ccall unsafe "lchown"
|
||||
c_lchown :: CString -> CUid -> CGid -> IO CInt
|
||||
#endif
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Setting file times
|
||||
|
||||
-- | @setFileTimes path atime mtime@ sets the access and modification times
|
||||
-- associated with file @path@ to @atime@ and @mtime@, respectively.
|
||||
--
|
||||
-- Note: calls @utime@.
|
||||
setFileTimes :: FilePath -> EpochTime -> EpochTime -> IO ()
|
||||
setFileTimes name atime mtime = do
|
||||
withFilePath name $ \s ->
|
||||
allocaBytes (#const sizeof(struct utimbuf)) $ \p -> do
|
||||
(#poke struct utimbuf, actime) p atime
|
||||
(#poke struct utimbuf, modtime) p mtime
|
||||
throwErrnoPathIfMinus1_ "setFileTimes" name (c_utime s p)
|
||||
|
||||
-- | Like 'setFileTimes' but timestamps can have sub-second resolution.
|
||||
--
|
||||
-- Note: calls @utimensat@ or @utimes@.
|
||||
--
|
||||
-- @since 2.7.0.0
|
||||
setFileTimesHiRes :: FilePath -> POSIXTime -> POSIXTime -> IO ()
|
||||
#ifdef HAVE_UTIMENSAT
|
||||
setFileTimesHiRes name atime mtime =
|
||||
withFilePath name $ \s ->
|
||||
withArray [toCTimeSpec atime, toCTimeSpec mtime] $ \times ->
|
||||
throwErrnoPathIfMinus1_ "setFileTimesHiRes" name $
|
||||
c_utimensat (#const AT_FDCWD) s times 0
|
||||
#else
|
||||
setFileTimesHiRes name atime mtime =
|
||||
withFilePath name $ \s ->
|
||||
withArray [toCTimeVal atime, toCTimeVal mtime] $ \times ->
|
||||
throwErrnoPathIfMinus1_ "setFileTimesHiRes" name (c_utimes s times)
|
||||
#endif
|
||||
|
||||
-- | Like 'setFileTimesHiRes' but does not follow symbolic links.
|
||||
-- This operation is not supported on all platforms. On these platforms,
|
||||
-- this function will raise an exception.
|
||||
--
|
||||
-- Note: calls @utimensat@ or @lutimes@.
|
||||
--
|
||||
-- @since 2.7.0.0
|
||||
setSymbolicLinkTimesHiRes :: FilePath -> POSIXTime -> POSIXTime -> IO ()
|
||||
#if HAVE_UTIMENSAT
|
||||
setSymbolicLinkTimesHiRes name atime mtime =
|
||||
withFilePath name $ \s ->
|
||||
withArray [toCTimeSpec atime, toCTimeSpec mtime] $ \times ->
|
||||
throwErrnoPathIfMinus1_ "setSymbolicLinkTimesHiRes" name $
|
||||
c_utimensat (#const AT_FDCWD) s times (#const AT_SYMLINK_NOFOLLOW)
|
||||
#elif HAVE_LUTIMES
|
||||
setSymbolicLinkTimesHiRes name atime mtime =
|
||||
withFilePath name $ \s ->
|
||||
withArray [toCTimeVal atime, toCTimeVal mtime] $ \times ->
|
||||
throwErrnoPathIfMinus1_ "setSymbolicLinkTimesHiRes" name $
|
||||
c_lutimes s times
|
||||
#else
|
||||
setSymbolicLinkTimesHiRes =
|
||||
error "setSymbolicLinkTimesHiRes: not available on this platform"
|
||||
#endif
|
||||
|
||||
-- | @touchFile path@ sets the access and modification times associated with
|
||||
-- file @path@ to the current time.
|
||||
--
|
||||
-- Note: calls @utime@.
|
||||
touchFile :: FilePath -> IO ()
|
||||
touchFile name = do
|
||||
withFilePath name $ \s ->
|
||||
throwErrnoPathIfMinus1_ "touchFile" name (c_utime s nullPtr)
|
||||
|
||||
-- | Like 'touchFile' but does not follow symbolic links.
|
||||
-- This operation is not supported on all platforms. On these platforms,
|
||||
-- this function will raise an exception.
|
||||
--
|
||||
-- Note: calls @lutimes@.
|
||||
--
|
||||
-- @since 2.7.0.0
|
||||
touchSymbolicLink :: FilePath -> IO ()
|
||||
#if HAVE_LUTIMES
|
||||
touchSymbolicLink name =
|
||||
withFilePath name $ \s ->
|
||||
throwErrnoPathIfMinus1_ "touchSymbolicLink" name (c_lutimes s nullPtr)
|
||||
#else
|
||||
touchSymbolicLink =
|
||||
error "touchSymbolicLink: not available on this platform"
|
||||
#endif
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Setting file sizes
|
||||
|
||||
-- | Truncates the file down to the specified length. If the file was larger
|
||||
-- than the given length before this operation was performed the extra is lost.
|
||||
--
|
||||
-- Note: calls @truncate@.
|
||||
setFileSize :: FilePath -> FileOffset -> IO ()
|
||||
setFileSize file off =
|
||||
withFilePath file $ \s ->
|
||||
throwErrnoPathIfMinus1_ "setFileSize" file (c_truncate s off)
|
||||
|
||||
foreign import capi unsafe "HsUnix.h truncate"
|
||||
c_truncate :: CString -> COff -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- pathconf()/fpathconf() support
|
||||
|
||||
-- | @getPathVar var path@ obtains the dynamic value of the requested
|
||||
-- configurable file limit or option associated with file or directory @path@.
|
||||
-- For defined file limits, @getPathVar@ returns the associated
|
||||
-- value. For defined file options, the result of @getPathVar@
|
||||
-- is undefined, but not failure.
|
||||
--
|
||||
-- Note: calls @pathconf@.
|
||||
getPathVar :: FilePath -> PathVar -> IO Limit
|
||||
getPathVar name v = do
|
||||
withFilePath name $ \ nameP ->
|
||||
throwErrnoPathIfMinus1 "getPathVar" name $
|
||||
c_pathconf nameP (pathVarConst v)
|
||||
|
||||
foreign import ccall unsafe "pathconf"
|
||||
c_pathconf :: CString -> CInt -> IO CLong
|
@ -1,448 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Files.ByteString
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- Functions defined by the POSIX standards for manipulating and querying the
|
||||
-- file system. Names of underlying POSIX functions are indicated whenever
|
||||
-- possible. A more complete documentation of the POSIX functions together
|
||||
-- with a more detailed description of different error conditions are usually
|
||||
-- available in the system's manual pages or from
|
||||
-- <http://www.unix.org/version3/online.html> (free registration required).
|
||||
--
|
||||
-- When a function that calls an underlying POSIX function fails, the errno
|
||||
-- code is converted to an 'IOError' using 'Foreign.C.Error.errnoToIOError'.
|
||||
-- For a list of which errno codes may be generated, consult the POSIX
|
||||
-- documentation for the underlying function.
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
module System.Posix.Files.ByteString (
|
||||
-- * File modes
|
||||
-- FileMode exported by System.Posix.Types
|
||||
unionFileModes, intersectFileModes,
|
||||
nullFileMode,
|
||||
ownerReadMode, ownerWriteMode, ownerExecuteMode, ownerModes,
|
||||
groupReadMode, groupWriteMode, groupExecuteMode, groupModes,
|
||||
otherReadMode, otherWriteMode, otherExecuteMode, otherModes,
|
||||
setUserIDMode, setGroupIDMode,
|
||||
stdFileMode, accessModes,
|
||||
fileTypeModes,
|
||||
blockSpecialMode, characterSpecialMode, namedPipeMode, regularFileMode,
|
||||
directoryMode, symbolicLinkMode, socketMode,
|
||||
|
||||
-- ** Setting file modes
|
||||
setFileMode, setFdMode, setFileCreationMask,
|
||||
|
||||
-- ** Checking file existence and permissions
|
||||
fileAccess, fileExist,
|
||||
|
||||
-- * File status
|
||||
FileStatus,
|
||||
-- ** Obtaining file status
|
||||
getFileStatus, getFdStatus, getSymbolicLinkStatus,
|
||||
-- ** Querying file status
|
||||
deviceID, fileID, fileMode, linkCount, fileOwner, fileGroup,
|
||||
specialDeviceID, fileSize, accessTime, modificationTime,
|
||||
statusChangeTime,
|
||||
accessTimeHiRes, modificationTimeHiRes, statusChangeTimeHiRes,
|
||||
isBlockDevice, isCharacterDevice, isNamedPipe, isRegularFile,
|
||||
isDirectory, isSymbolicLink, isSocket,
|
||||
|
||||
-- * Creation
|
||||
createNamedPipe,
|
||||
createDevice,
|
||||
|
||||
-- * Hard links
|
||||
createLink, removeLink,
|
||||
|
||||
-- * Symbolic links
|
||||
createSymbolicLink, readSymbolicLink,
|
||||
|
||||
-- * Renaming files
|
||||
rename,
|
||||
|
||||
-- * Changing file ownership
|
||||
setOwnerAndGroup, setFdOwnerAndGroup,
|
||||
#if HAVE_LCHOWN
|
||||
setSymbolicLinkOwnerAndGroup,
|
||||
#endif
|
||||
|
||||
-- * Changing file timestamps
|
||||
setFileTimes, setFileTimesHiRes,
|
||||
setFdTimesHiRes, setSymbolicLinkTimesHiRes,
|
||||
touchFile, touchFd, touchSymbolicLink,
|
||||
|
||||
-- * Setting file sizes
|
||||
setFileSize, setFdSize,
|
||||
|
||||
-- * Find system-specific limits for a file
|
||||
PathVar(..), getPathVar, getFdPathVar,
|
||||
) where
|
||||
|
||||
import System.Posix.Types
|
||||
import System.Posix.Internals hiding (withFilePath, peekFilePathLen)
|
||||
import Foreign
|
||||
import Foreign.C hiding (
|
||||
throwErrnoPath,
|
||||
throwErrnoPathIf,
|
||||
throwErrnoPathIf_,
|
||||
throwErrnoPathIfNull,
|
||||
throwErrnoPathIfMinus1,
|
||||
throwErrnoPathIfMinus1_ )
|
||||
|
||||
import System.Posix.Files.Common
|
||||
import System.Posix.ByteString.FilePath
|
||||
|
||||
import Data.Time.Clock.POSIX (POSIXTime)
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- chmod()
|
||||
|
||||
-- | @setFileMode path mode@ changes permission of the file given by @path@
|
||||
-- to @mode@. This operation may fail with 'throwErrnoPathIfMinus1_' if @path@
|
||||
-- doesn't exist or if the effective user ID of the current process is not that
|
||||
-- of the file's owner.
|
||||
--
|
||||
-- Note: calls @chmod@.
|
||||
setFileMode :: RawFilePath -> FileMode -> IO ()
|
||||
setFileMode name m =
|
||||
withFilePath name $ \s -> do
|
||||
throwErrnoPathIfMinus1_ "setFileMode" name (c_chmod s m)
|
||||
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- access()
|
||||
|
||||
-- | @fileAccess name read write exec@ checks if the file (or other file system
|
||||
-- object) @name@ can be accessed for reading, writing and\/or executing. To
|
||||
-- check a permission set the corresponding argument to 'True'.
|
||||
--
|
||||
-- Note: calls @access@.
|
||||
fileAccess :: RawFilePath -> Bool -> Bool -> Bool -> IO Bool
|
||||
fileAccess name readOK writeOK execOK = access name flags
|
||||
where
|
||||
flags = read_f .|. write_f .|. exec_f
|
||||
read_f = if readOK then (#const R_OK) else 0
|
||||
write_f = if writeOK then (#const W_OK) else 0
|
||||
exec_f = if execOK then (#const X_OK) else 0
|
||||
|
||||
-- | Checks for the existence of the file.
|
||||
--
|
||||
-- Note: calls @access@.
|
||||
fileExist :: RawFilePath -> IO Bool
|
||||
fileExist name =
|
||||
withFilePath name $ \s -> do
|
||||
r <- c_access s (#const F_OK)
|
||||
if (r == 0)
|
||||
then return True
|
||||
else do err <- getErrno
|
||||
if (err == eNOENT)
|
||||
then return False
|
||||
else throwErrnoPath "fileExist" name
|
||||
|
||||
access :: RawFilePath -> CMode -> IO Bool
|
||||
access name flags =
|
||||
withFilePath name $ \s -> do
|
||||
r <- c_access s (fromIntegral flags)
|
||||
if (r == 0)
|
||||
then return True
|
||||
else do err <- getErrno
|
||||
if (err == eACCES || err == eROFS || err == eTXTBSY ||
|
||||
err == ePERM)
|
||||
then return False
|
||||
else throwErrnoPath "fileAccess" name
|
||||
|
||||
|
||||
-- | @getFileStatus path@ calls gets the @FileStatus@ information (user ID,
|
||||
-- size, access times, etc.) for the file @path@.
|
||||
--
|
||||
-- Note: calls @stat@.
|
||||
getFileStatus :: RawFilePath -> IO FileStatus
|
||||
getFileStatus path = do
|
||||
fp <- mallocForeignPtrBytes (#const sizeof(struct stat))
|
||||
withForeignPtr fp $ \p ->
|
||||
withFilePath path $ \s ->
|
||||
throwErrnoPathIfMinus1Retry_ "getFileStatus" path (c_stat s p)
|
||||
return (FileStatus fp)
|
||||
|
||||
-- | Acts as 'getFileStatus' except when the 'RawFilePath' refers to a symbolic
|
||||
-- link. In that case the @FileStatus@ information of the symbolic link itself
|
||||
-- is returned instead of that of the file it points to.
|
||||
--
|
||||
-- Note: calls @lstat@.
|
||||
getSymbolicLinkStatus :: RawFilePath -> IO FileStatus
|
||||
getSymbolicLinkStatus path = do
|
||||
fp <- mallocForeignPtrBytes (#const sizeof(struct stat))
|
||||
withForeignPtr fp $ \p ->
|
||||
withFilePath path $ \s ->
|
||||
throwErrnoPathIfMinus1_ "getSymbolicLinkStatus" path (c_lstat s p)
|
||||
return (FileStatus fp)
|
||||
|
||||
foreign import capi unsafe "HsUnix.h lstat"
|
||||
c_lstat :: CString -> Ptr CStat -> IO CInt
|
||||
|
||||
-- | @createNamedPipe fifo mode@
|
||||
-- creates a new named pipe, @fifo@, with permissions based on
|
||||
-- @mode@. May fail with 'throwErrnoPathIfMinus1_' if a file named @name@
|
||||
-- already exists or if the effective user ID of the current process doesn't
|
||||
-- have permission to create the pipe.
|
||||
--
|
||||
-- Note: calls @mkfifo@.
|
||||
createNamedPipe :: RawFilePath -> FileMode -> IO ()
|
||||
createNamedPipe name mode = do
|
||||
withFilePath name $ \s ->
|
||||
throwErrnoPathIfMinus1_ "createNamedPipe" name (c_mkfifo s mode)
|
||||
|
||||
-- | @createDevice path mode dev@ creates either a regular or a special file
|
||||
-- depending on the value of @mode@ (and @dev@). @mode@ will normally be either
|
||||
-- 'blockSpecialMode' or 'characterSpecialMode'. May fail with
|
||||
-- 'throwErrnoPathIfMinus1_' if a file named @name@ already exists or if the
|
||||
-- effective user ID of the current process doesn't have permission to create
|
||||
-- the file.
|
||||
--
|
||||
-- Note: calls @mknod@.
|
||||
createDevice :: RawFilePath -> FileMode -> DeviceID -> IO ()
|
||||
createDevice path mode dev =
|
||||
withFilePath path $ \s ->
|
||||
throwErrnoPathIfMinus1_ "createDevice" path (c_mknod s mode dev)
|
||||
|
||||
foreign import capi unsafe "HsUnix.h mknod"
|
||||
c_mknod :: CString -> CMode -> CDev -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Hard links
|
||||
|
||||
-- | @createLink old new@ creates a new path, @new@, linked to an existing file,
|
||||
-- @old@.
|
||||
--
|
||||
-- Note: calls @link@.
|
||||
createLink :: RawFilePath -> RawFilePath -> IO ()
|
||||
createLink name1 name2 =
|
||||
withFilePath name1 $ \s1 ->
|
||||
withFilePath name2 $ \s2 ->
|
||||
throwErrnoPathIfMinus1_ "createLink" name1 (c_link s1 s2)
|
||||
|
||||
-- | @removeLink path@ removes the link named @path@.
|
||||
--
|
||||
-- Note: calls @unlink@.
|
||||
removeLink :: RawFilePath -> IO ()
|
||||
removeLink name =
|
||||
withFilePath name $ \s ->
|
||||
throwErrnoPathIfMinus1_ "removeLink" name (c_unlink s)
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Symbolic Links
|
||||
|
||||
-- | @createSymbolicLink file1 file2@ creates a symbolic link named @file2@
|
||||
-- which points to the file @file1@.
|
||||
--
|
||||
-- Symbolic links are interpreted at run-time as if the contents of the link
|
||||
-- had been substituted into the path being followed to find a file or directory.
|
||||
--
|
||||
-- Note: calls @symlink@.
|
||||
createSymbolicLink :: RawFilePath -> RawFilePath -> IO ()
|
||||
createSymbolicLink file1 file2 =
|
||||
withFilePath file1 $ \s1 ->
|
||||
withFilePath file2 $ \s2 ->
|
||||
throwErrnoPathIfMinus1_ "createSymbolicLink" file2 (c_symlink s1 s2)
|
||||
|
||||
foreign import ccall unsafe "symlink"
|
||||
c_symlink :: CString -> CString -> IO CInt
|
||||
|
||||
-- ToDo: should really use SYMLINK_MAX, but not everyone supports it yet,
|
||||
-- and it seems that the intention is that SYMLINK_MAX is no larger than
|
||||
-- PATH_MAX.
|
||||
#if !defined(PATH_MAX)
|
||||
-- PATH_MAX is not defined on systems with unlimited path length.
|
||||
-- Ugly. Fix this.
|
||||
#define PATH_MAX 4096
|
||||
#endif
|
||||
|
||||
-- | Reads the @RawFilePath@ pointed to by the symbolic link and returns it.
|
||||
--
|
||||
-- Note: calls @readlink@.
|
||||
readSymbolicLink :: RawFilePath -> IO RawFilePath
|
||||
readSymbolicLink file =
|
||||
allocaArray0 (#const PATH_MAX) $ \buf -> do
|
||||
withFilePath file $ \s -> do
|
||||
len <- throwErrnoPathIfMinus1 "readSymbolicLink" file $
|
||||
c_readlink s buf (#const PATH_MAX)
|
||||
peekFilePathLen (buf,fromIntegral len)
|
||||
|
||||
foreign import ccall unsafe "readlink"
|
||||
c_readlink :: CString -> CString -> CSize -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Renaming files
|
||||
|
||||
-- | @rename old new@ renames a file or directory from @old@ to @new@.
|
||||
--
|
||||
-- Note: calls @rename@.
|
||||
rename :: RawFilePath -> RawFilePath -> IO ()
|
||||
rename name1 name2 =
|
||||
withFilePath name1 $ \s1 ->
|
||||
withFilePath name2 $ \s2 ->
|
||||
throwErrnoPathIfMinus1_ "rename" name1 (c_rename s1 s2)
|
||||
|
||||
foreign import ccall unsafe "rename"
|
||||
c_rename :: CString -> CString -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- chown()
|
||||
|
||||
-- | @setOwnerAndGroup path uid gid@ changes the owner and group of @path@ to
|
||||
-- @uid@ and @gid@, respectively.
|
||||
--
|
||||
-- If @uid@ or @gid@ is specified as -1, then that ID is not changed.
|
||||
--
|
||||
-- Note: calls @chown@.
|
||||
setOwnerAndGroup :: RawFilePath -> UserID -> GroupID -> IO ()
|
||||
setOwnerAndGroup name uid gid = do
|
||||
withFilePath name $ \s ->
|
||||
throwErrnoPathIfMinus1_ "setOwnerAndGroup" name (c_chown s uid gid)
|
||||
|
||||
foreign import ccall unsafe "chown"
|
||||
c_chown :: CString -> CUid -> CGid -> IO CInt
|
||||
|
||||
#if HAVE_LCHOWN
|
||||
-- | Acts as 'setOwnerAndGroup' but does not follow symlinks (and thus
|
||||
-- changes permissions on the link itself).
|
||||
--
|
||||
-- Note: calls @lchown@.
|
||||
setSymbolicLinkOwnerAndGroup :: RawFilePath -> UserID -> GroupID -> IO ()
|
||||
setSymbolicLinkOwnerAndGroup name uid gid = do
|
||||
withFilePath name $ \s ->
|
||||
throwErrnoPathIfMinus1_ "setSymbolicLinkOwnerAndGroup" name
|
||||
(c_lchown s uid gid)
|
||||
|
||||
foreign import ccall unsafe "lchown"
|
||||
c_lchown :: CString -> CUid -> CGid -> IO CInt
|
||||
#endif
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Setting file times
|
||||
|
||||
-- | @setFileTimes path atime mtime@ sets the access and modification times
|
||||
-- associated with file @path@ to @atime@ and @mtime@, respectively.
|
||||
--
|
||||
-- Note: calls @utime@.
|
||||
setFileTimes :: RawFilePath -> EpochTime -> EpochTime -> IO ()
|
||||
setFileTimes name atime mtime = do
|
||||
withFilePath name $ \s ->
|
||||
allocaBytes (#const sizeof(struct utimbuf)) $ \p -> do
|
||||
(#poke struct utimbuf, actime) p atime
|
||||
(#poke struct utimbuf, modtime) p mtime
|
||||
throwErrnoPathIfMinus1_ "setFileTimes" name (c_utime s p)
|
||||
|
||||
-- | Like 'setFileTimes' but timestamps can have sub-second resolution.
|
||||
--
|
||||
-- Note: calls @utimensat@ or @utimes@.
|
||||
setFileTimesHiRes :: RawFilePath -> POSIXTime -> POSIXTime -> IO ()
|
||||
#ifdef HAVE_UTIMENSAT
|
||||
setFileTimesHiRes name atime mtime =
|
||||
withFilePath name $ \s ->
|
||||
withArray [toCTimeSpec atime, toCTimeSpec mtime] $ \times ->
|
||||
throwErrnoPathIfMinus1_ "setFileTimesHiRes" name $
|
||||
c_utimensat (#const AT_FDCWD) s times 0
|
||||
#else
|
||||
setFileTimesHiRes name atime mtime =
|
||||
withFilePath name $ \s ->
|
||||
withArray [toCTimeVal atime, toCTimeVal mtime] $ \times ->
|
||||
throwErrnoPathIfMinus1_ "setFileTimesHiRes" name (c_utimes s times)
|
||||
#endif
|
||||
|
||||
-- | Like 'setFileTimesHiRes' but does not follow symbolic links.
|
||||
-- This operation is not supported on all platforms. On these platforms,
|
||||
-- this function will raise an exception.
|
||||
--
|
||||
-- Note: calls @utimensat@ or @lutimes@.
|
||||
setSymbolicLinkTimesHiRes :: RawFilePath -> POSIXTime -> POSIXTime -> IO ()
|
||||
#if HAVE_UTIMENSAT
|
||||
setSymbolicLinkTimesHiRes name atime mtime =
|
||||
withFilePath name $ \s ->
|
||||
withArray [toCTimeSpec atime, toCTimeSpec mtime] $ \times ->
|
||||
throwErrnoPathIfMinus1_ "setSymbolicLinkTimesHiRes" name $
|
||||
c_utimensat (#const AT_FDCWD) s times (#const AT_SYMLINK_NOFOLLOW)
|
||||
#elif HAVE_LUTIMES
|
||||
setSymbolicLinkTimesHiRes name atime mtime =
|
||||
withFilePath name $ \s ->
|
||||
withArray [toCTimeVal atime, toCTimeVal mtime] $ \times ->
|
||||
throwErrnoPathIfMinus1_ "setSymbolicLinkTimesHiRes" name $
|
||||
c_lutimes s times
|
||||
#else
|
||||
setSymbolicLinkTimesHiRes =
|
||||
error "setSymbolicLinkTimesHiRes: not available on this platform"
|
||||
#endif
|
||||
|
||||
-- | @touchFile path@ sets the access and modification times associated with
|
||||
-- file @path@ to the current time.
|
||||
--
|
||||
-- Note: calls @utime@.
|
||||
touchFile :: RawFilePath -> IO ()
|
||||
touchFile name = do
|
||||
withFilePath name $ \s ->
|
||||
throwErrnoPathIfMinus1_ "touchFile" name (c_utime s nullPtr)
|
||||
|
||||
-- | Like 'touchFile' but does not follow symbolic links.
|
||||
-- This operation is not supported on all platforms. On these platforms,
|
||||
-- this function will raise an exception.
|
||||
--
|
||||
-- Note: calls @lutimes@.
|
||||
touchSymbolicLink :: RawFilePath -> IO ()
|
||||
#if HAVE_LUTIMES
|
||||
touchSymbolicLink name =
|
||||
withFilePath name $ \s ->
|
||||
throwErrnoPathIfMinus1_ "touchSymbolicLink" name (c_lutimes s nullPtr)
|
||||
#else
|
||||
touchSymbolicLink =
|
||||
error "touchSymbolicLink: not available on this platform"
|
||||
#endif
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Setting file sizes
|
||||
|
||||
-- | Truncates the file down to the specified length. If the file was larger
|
||||
-- than the given length before this operation was performed the extra is lost.
|
||||
--
|
||||
-- Note: calls @truncate@.
|
||||
setFileSize :: RawFilePath -> FileOffset -> IO ()
|
||||
setFileSize file off =
|
||||
withFilePath file $ \s ->
|
||||
throwErrnoPathIfMinus1_ "setFileSize" file (c_truncate s off)
|
||||
|
||||
foreign import capi unsafe "HsUnix.h truncate"
|
||||
c_truncate :: CString -> COff -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- pathconf()/fpathconf() support
|
||||
|
||||
-- | @getPathVar var path@ obtains the dynamic value of the requested
|
||||
-- configurable file limit or option associated with file or directory @path@.
|
||||
-- For defined file limits, @getPathVar@ returns the associated
|
||||
-- value. For defined file options, the result of @getPathVar@
|
||||
-- is undefined, but not failure.
|
||||
--
|
||||
-- Note: calls @pathconf@.
|
||||
getPathVar :: RawFilePath -> PathVar -> IO Limit
|
||||
getPathVar name v = do
|
||||
withFilePath name $ \ nameP ->
|
||||
throwErrnoPathIfMinus1 "getPathVar" name $
|
||||
c_pathconf nameP (pathVarConst v)
|
||||
|
||||
foreign import ccall unsafe "pathconf"
|
||||
c_pathconf :: CString -> CInt -> IO CLong
|
@ -1,605 +0,0 @@
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Files.Common
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- Functions defined by the POSIX standards for manipulating and querying the
|
||||
-- file system. Names of underlying POSIX functions are indicated whenever
|
||||
-- possible. A more complete documentation of the POSIX functions together
|
||||
-- with a more detailed description of different error conditions are usually
|
||||
-- available in the system's manual pages or from
|
||||
-- <http://www.unix.org/version3/online.html> (free registration required).
|
||||
--
|
||||
-- When a function that calls an underlying POSIX function fails, the errno
|
||||
-- code is converted to an 'IOError' using 'Foreign.C.Error.errnoToIOError'.
|
||||
-- For a list of which errno codes may be generated, consult the POSIX
|
||||
-- documentation for the underlying function.
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
module System.Posix.Files.Common (
|
||||
-- * File modes
|
||||
-- FileMode exported by System.Posix.Types
|
||||
unionFileModes, intersectFileModes,
|
||||
nullFileMode,
|
||||
ownerReadMode, ownerWriteMode, ownerExecuteMode, ownerModes,
|
||||
groupReadMode, groupWriteMode, groupExecuteMode, groupModes,
|
||||
otherReadMode, otherWriteMode, otherExecuteMode, otherModes,
|
||||
setUserIDMode, setGroupIDMode,
|
||||
stdFileMode, accessModes,
|
||||
fileTypeModes,
|
||||
blockSpecialMode, characterSpecialMode, namedPipeMode, regularFileMode,
|
||||
directoryMode, symbolicLinkMode, socketMode,
|
||||
|
||||
-- ** Setting file modes
|
||||
setFdMode, setFileCreationMask,
|
||||
|
||||
-- * File status
|
||||
FileStatus(..),
|
||||
-- ** Obtaining file status
|
||||
getFdStatus,
|
||||
-- ** Querying file status
|
||||
deviceID, fileID, fileMode, linkCount, fileOwner, fileGroup,
|
||||
specialDeviceID, fileSize, accessTime, modificationTime,
|
||||
statusChangeTime,
|
||||
accessTimeHiRes, modificationTimeHiRes, statusChangeTimeHiRes,
|
||||
setFdTimesHiRes, touchFd,
|
||||
isBlockDevice, isCharacterDevice, isNamedPipe, isRegularFile,
|
||||
isDirectory, isSymbolicLink, isSocket,
|
||||
|
||||
-- * Setting file sizes
|
||||
setFdSize,
|
||||
|
||||
-- * Changing file ownership
|
||||
setFdOwnerAndGroup,
|
||||
|
||||
-- * Find system-specific limits for a file
|
||||
PathVar(..), getFdPathVar, pathVarConst,
|
||||
|
||||
-- * Low level types and functions
|
||||
#ifdef HAVE_UTIMENSAT
|
||||
CTimeSpec(..),
|
||||
toCTimeSpec,
|
||||
c_utimensat,
|
||||
#endif
|
||||
CTimeVal(..),
|
||||
toCTimeVal,
|
||||
c_utimes,
|
||||
#ifdef HAVE_LUTIMES
|
||||
c_lutimes,
|
||||
#endif
|
||||
) where
|
||||
|
||||
import System.Posix.Types
|
||||
import System.IO.Unsafe
|
||||
import Data.Bits
|
||||
import Data.Int
|
||||
import Data.Ratio
|
||||
import Data.Time.Clock.POSIX (POSIXTime)
|
||||
import System.Posix.Internals
|
||||
import Foreign.C
|
||||
import Foreign.ForeignPtr
|
||||
#if defined(HAVE_FUTIMES) || defined(HAVE_FUTIMENS)
|
||||
import Foreign.Marshal (withArray)
|
||||
#endif
|
||||
import Foreign.Ptr
|
||||
import Foreign.Storable
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- POSIX file modes
|
||||
|
||||
-- The abstract type 'FileMode', constants and operators for
|
||||
-- manipulating the file modes defined by POSIX.
|
||||
|
||||
-- | No permissions.
|
||||
nullFileMode :: FileMode
|
||||
nullFileMode = 0
|
||||
|
||||
-- | Owner has read permission.
|
||||
ownerReadMode :: FileMode
|
||||
ownerReadMode = (#const S_IRUSR)
|
||||
|
||||
-- | Owner has write permission.
|
||||
ownerWriteMode :: FileMode
|
||||
ownerWriteMode = (#const S_IWUSR)
|
||||
|
||||
-- | Owner has execute permission.
|
||||
ownerExecuteMode :: FileMode
|
||||
ownerExecuteMode = (#const S_IXUSR)
|
||||
|
||||
-- | Group has read permission.
|
||||
groupReadMode :: FileMode
|
||||
groupReadMode = (#const S_IRGRP)
|
||||
|
||||
-- | Group has write permission.
|
||||
groupWriteMode :: FileMode
|
||||
groupWriteMode = (#const S_IWGRP)
|
||||
|
||||
-- | Group has execute permission.
|
||||
groupExecuteMode :: FileMode
|
||||
groupExecuteMode = (#const S_IXGRP)
|
||||
|
||||
-- | Others have read permission.
|
||||
otherReadMode :: FileMode
|
||||
otherReadMode = (#const S_IROTH)
|
||||
|
||||
-- | Others have write permission.
|
||||
otherWriteMode :: FileMode
|
||||
otherWriteMode = (#const S_IWOTH)
|
||||
|
||||
-- | Others have execute permission.
|
||||
otherExecuteMode :: FileMode
|
||||
otherExecuteMode = (#const S_IXOTH)
|
||||
|
||||
-- | Set user ID on execution.
|
||||
setUserIDMode :: FileMode
|
||||
setUserIDMode = (#const S_ISUID)
|
||||
|
||||
-- | Set group ID on execution.
|
||||
setGroupIDMode :: FileMode
|
||||
setGroupIDMode = (#const S_ISGID)
|
||||
|
||||
-- | Owner, group and others have read and write permission.
|
||||
stdFileMode :: FileMode
|
||||
stdFileMode = ownerReadMode .|. ownerWriteMode .|.
|
||||
groupReadMode .|. groupWriteMode .|.
|
||||
otherReadMode .|. otherWriteMode
|
||||
|
||||
-- | Owner has read, write and execute permission.
|
||||
ownerModes :: FileMode
|
||||
ownerModes = (#const S_IRWXU)
|
||||
|
||||
-- | Group has read, write and execute permission.
|
||||
groupModes :: FileMode
|
||||
groupModes = (#const S_IRWXG)
|
||||
|
||||
-- | Others have read, write and execute permission.
|
||||
otherModes :: FileMode
|
||||
otherModes = (#const S_IRWXO)
|
||||
|
||||
-- | Owner, group and others have read, write and execute permission.
|
||||
accessModes :: FileMode
|
||||
accessModes = ownerModes .|. groupModes .|. otherModes
|
||||
|
||||
-- | Combines the two file modes into one that contains modes that appear in
|
||||
-- either.
|
||||
unionFileModes :: FileMode -> FileMode -> FileMode
|
||||
unionFileModes m1 m2 = m1 .|. m2
|
||||
|
||||
-- | Combines two file modes into one that only contains modes that appear in
|
||||
-- both.
|
||||
intersectFileModes :: FileMode -> FileMode -> FileMode
|
||||
intersectFileModes m1 m2 = m1 .&. m2
|
||||
|
||||
fileTypeModes :: FileMode
|
||||
fileTypeModes = (#const S_IFMT)
|
||||
|
||||
blockSpecialMode :: FileMode
|
||||
blockSpecialMode = (#const S_IFBLK)
|
||||
|
||||
characterSpecialMode :: FileMode
|
||||
characterSpecialMode = (#const S_IFCHR)
|
||||
|
||||
namedPipeMode :: FileMode
|
||||
namedPipeMode = (#const S_IFIFO)
|
||||
|
||||
regularFileMode :: FileMode
|
||||
regularFileMode = (#const S_IFREG)
|
||||
|
||||
directoryMode :: FileMode
|
||||
directoryMode = (#const S_IFDIR)
|
||||
|
||||
symbolicLinkMode :: FileMode
|
||||
symbolicLinkMode = (#const S_IFLNK)
|
||||
|
||||
socketMode :: FileMode
|
||||
socketMode = (#const S_IFSOCK)
|
||||
|
||||
-- | @setFdMode fd mode@ acts like 'setFileMode' but uses a file descriptor
|
||||
-- @fd@ instead of a 'FilePath'.
|
||||
--
|
||||
-- Note: calls @fchmod@.
|
||||
setFdMode :: Fd -> FileMode -> IO ()
|
||||
setFdMode (Fd fd) m =
|
||||
throwErrnoIfMinus1_ "setFdMode" (c_fchmod fd m)
|
||||
|
||||
foreign import ccall unsafe "fchmod"
|
||||
c_fchmod :: CInt -> CMode -> IO CInt
|
||||
|
||||
-- | @setFileCreationMask mode@ sets the file mode creation mask to @mode@.
|
||||
-- Modes set by this operation are subtracted from files and directories upon
|
||||
-- creation. The previous file creation mask is returned.
|
||||
--
|
||||
-- Note: calls @umask@.
|
||||
setFileCreationMask :: FileMode -> IO FileMode
|
||||
setFileCreationMask mask = c_umask mask
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- stat() support
|
||||
|
||||
-- | POSIX defines operations to get information, such as owner, permissions,
|
||||
-- size and access times, about a file. This information is represented by the
|
||||
-- 'FileStatus' type.
|
||||
--
|
||||
-- Note: see @chmod@.
|
||||
newtype FileStatus = FileStatus (ForeignPtr CStat)
|
||||
|
||||
-- | ID of the device on which this file resides.
|
||||
deviceID :: FileStatus -> DeviceID
|
||||
-- | inode number
|
||||
fileID :: FileStatus -> FileID
|
||||
-- | File mode (such as permissions).
|
||||
fileMode :: FileStatus -> FileMode
|
||||
-- | Number of hard links to this file.
|
||||
linkCount :: FileStatus -> LinkCount
|
||||
-- | ID of owner.
|
||||
fileOwner :: FileStatus -> UserID
|
||||
-- | ID of group.
|
||||
fileGroup :: FileStatus -> GroupID
|
||||
-- | Describes the device that this file represents.
|
||||
specialDeviceID :: FileStatus -> DeviceID
|
||||
-- | Size of the file in bytes. If this file is a symbolic link the size is
|
||||
-- the length of the pathname it contains.
|
||||
fileSize :: FileStatus -> FileOffset
|
||||
-- | Time of last access.
|
||||
accessTime :: FileStatus -> EpochTime
|
||||
-- | Time of last access in sub-second resolution.
|
||||
accessTimeHiRes :: FileStatus -> POSIXTime
|
||||
-- | Time of last modification.
|
||||
modificationTime :: FileStatus -> EpochTime
|
||||
-- | Time of last modification in sub-second resolution.
|
||||
modificationTimeHiRes :: FileStatus -> POSIXTime
|
||||
-- | Time of last status change (i.e. owner, group, link count, mode, etc.).
|
||||
statusChangeTime :: FileStatus -> EpochTime
|
||||
-- | Time of last status change (i.e. owner, group, link count, mode, etc.) in sub-second resolution.
|
||||
statusChangeTimeHiRes :: FileStatus -> POSIXTime
|
||||
|
||||
deviceID (FileStatus stat) =
|
||||
unsafePerformIO $ withForeignPtr stat $ (#peek struct stat, st_dev)
|
||||
fileID (FileStatus stat) =
|
||||
unsafePerformIO $ withForeignPtr stat $ (#peek struct stat, st_ino)
|
||||
fileMode (FileStatus stat) =
|
||||
unsafePerformIO $ withForeignPtr stat $ (#peek struct stat, st_mode)
|
||||
linkCount (FileStatus stat) =
|
||||
unsafePerformIO $ withForeignPtr stat $ (#peek struct stat, st_nlink)
|
||||
fileOwner (FileStatus stat) =
|
||||
unsafePerformIO $ withForeignPtr stat $ (#peek struct stat, st_uid)
|
||||
fileGroup (FileStatus stat) =
|
||||
unsafePerformIO $ withForeignPtr stat $ (#peek struct stat, st_gid)
|
||||
specialDeviceID (FileStatus stat) =
|
||||
unsafePerformIO $ withForeignPtr stat $ (#peek struct stat, st_rdev)
|
||||
fileSize (FileStatus stat) =
|
||||
unsafePerformIO $ withForeignPtr stat $ (#peek struct stat, st_size)
|
||||
accessTime (FileStatus stat) =
|
||||
unsafePerformIO $ withForeignPtr stat $ (#peek struct stat, st_atime)
|
||||
modificationTime (FileStatus stat) =
|
||||
unsafePerformIO $ withForeignPtr stat $ (#peek struct stat, st_mtime)
|
||||
statusChangeTime (FileStatus stat) =
|
||||
unsafePerformIO $ withForeignPtr stat $ (#peek struct stat, st_ctime)
|
||||
|
||||
accessTimeHiRes (FileStatus stat) =
|
||||
unsafePerformIO $ withForeignPtr stat $ \stat_ptr -> do
|
||||
sec <- (#peek struct stat, st_atime) stat_ptr :: IO EpochTime
|
||||
#ifdef HAVE_STRUCT_STAT_ST_ATIM
|
||||
nsec <- (#peek struct stat, st_atim.tv_nsec) stat_ptr :: IO (#type long)
|
||||
let frac = toInteger nsec % 10^(9::Int)
|
||||
#elif HAVE_STRUCT_STAT_ST_ATIMESPEC
|
||||
nsec <- (#peek struct stat, st_atimespec.tv_nsec) stat_ptr :: IO (#type long)
|
||||
let frac = toInteger nsec % 10^(9::Int)
|
||||
#elif HAVE_STRUCT_STAT_ST_ATIMENSEC
|
||||
nsec <- (#peek struct stat, st_atimensec) stat_ptr :: IO (#type long)
|
||||
let frac = toInteger nsec % 10^(9::Int)
|
||||
#elif HAVE_STRUCT_STAT_ST_ATIME_N
|
||||
nsec <- (#peek struct stat, st_atime_n) stat_ptr :: IO (#type int)
|
||||
let frac = toInteger nsec % 10^(9::Int)
|
||||
#elif HAVE_STRUCT_STAT_ST_UATIME
|
||||
usec <- (#peek struct stat, st_uatime) stat_ptr :: IO (#type int)
|
||||
let frac = toInteger usec % 10^(6::Int)
|
||||
#else
|
||||
let frac = 0
|
||||
#endif
|
||||
return $ fromRational $ toRational sec + frac
|
||||
|
||||
modificationTimeHiRes (FileStatus stat) =
|
||||
unsafePerformIO $ withForeignPtr stat $ \stat_ptr -> do
|
||||
sec <- (#peek struct stat, st_mtime) stat_ptr :: IO EpochTime
|
||||
#ifdef HAVE_STRUCT_STAT_ST_MTIM
|
||||
nsec <- (#peek struct stat, st_mtim.tv_nsec) stat_ptr :: IO (#type long)
|
||||
let frac = toInteger nsec % 10^(9::Int)
|
||||
#elif HAVE_STRUCT_STAT_ST_MTIMESPEC
|
||||
nsec <- (#peek struct stat, st_mtimespec.tv_nsec) stat_ptr :: IO (#type long)
|
||||
let frac = toInteger nsec % 10^(9::Int)
|
||||
#elif HAVE_STRUCT_STAT_ST_MTIMENSEC
|
||||
nsec <- (#peek struct stat, st_mtimensec) stat_ptr :: IO (#type long)
|
||||
let frac = toInteger nsec % 10^(9::Int)
|
||||
#elif HAVE_STRUCT_STAT_ST_MTIME_N
|
||||
nsec <- (#peek struct stat, st_mtime_n) stat_ptr :: IO (#type int)
|
||||
let frac = toInteger nsec % 10^(9::Int)
|
||||
#elif HAVE_STRUCT_STAT_ST_UMTIME
|
||||
usec <- (#peek struct stat, st_umtime) stat_ptr :: IO (#type int)
|
||||
let frac = toInteger usec % 10^(6::Int)
|
||||
#else
|
||||
let frac = 0
|
||||
#endif
|
||||
return $ fromRational $ toRational sec + frac
|
||||
|
||||
statusChangeTimeHiRes (FileStatus stat) =
|
||||
unsafePerformIO $ withForeignPtr stat $ \stat_ptr -> do
|
||||
sec <- (#peek struct stat, st_ctime) stat_ptr :: IO EpochTime
|
||||
#ifdef HAVE_STRUCT_STAT_ST_CTIM
|
||||
nsec <- (#peek struct stat, st_ctim.tv_nsec) stat_ptr :: IO (#type long)
|
||||
let frac = toInteger nsec % 10^(9::Int)
|
||||
#elif HAVE_STRUCT_STAT_ST_CTIMESPEC
|
||||
nsec <- (#peek struct stat, st_ctimespec.tv_nsec) stat_ptr :: IO (#type long)
|
||||
let frac = toInteger nsec % 10^(9::Int)
|
||||
#elif HAVE_STRUCT_STAT_ST_CTIMENSEC
|
||||
nsec <- (#peek struct stat, st_ctimensec) stat_ptr :: IO (#type long)
|
||||
let frac = toInteger nsec % 10^(9::Int)
|
||||
#elif HAVE_STRUCT_STAT_ST_CTIME_N
|
||||
nsec <- (#peek struct stat, st_ctime_n) stat_ptr :: IO (#type int)
|
||||
let frac = toInteger nsec % 10^(9::Int)
|
||||
#elif HAVE_STRUCT_STAT_ST_UCTIME
|
||||
usec <- (#peek struct stat, st_uctime) stat_ptr :: IO (#type int)
|
||||
let frac = toInteger usec % 10^(6::Int)
|
||||
#else
|
||||
let frac = 0
|
||||
#endif
|
||||
return $ fromRational $ toRational sec + frac
|
||||
|
||||
-- | Checks if this file is a block device.
|
||||
isBlockDevice :: FileStatus -> Bool
|
||||
-- | Checks if this file is a character device.
|
||||
isCharacterDevice :: FileStatus -> Bool
|
||||
-- | Checks if this file is a named pipe device.
|
||||
isNamedPipe :: FileStatus -> Bool
|
||||
-- | Checks if this file is a regular file device.
|
||||
isRegularFile :: FileStatus -> Bool
|
||||
-- | Checks if this file is a directory device.
|
||||
isDirectory :: FileStatus -> Bool
|
||||
-- | Checks if this file is a symbolic link device.
|
||||
isSymbolicLink :: FileStatus -> Bool
|
||||
-- | Checks if this file is a socket device.
|
||||
isSocket :: FileStatus -> Bool
|
||||
|
||||
isBlockDevice stat =
|
||||
(fileMode stat `intersectFileModes` fileTypeModes) == blockSpecialMode
|
||||
isCharacterDevice stat =
|
||||
(fileMode stat `intersectFileModes` fileTypeModes) == characterSpecialMode
|
||||
isNamedPipe stat =
|
||||
(fileMode stat `intersectFileModes` fileTypeModes) == namedPipeMode
|
||||
isRegularFile stat =
|
||||
(fileMode stat `intersectFileModes` fileTypeModes) == regularFileMode
|
||||
isDirectory stat =
|
||||
(fileMode stat `intersectFileModes` fileTypeModes) == directoryMode
|
||||
isSymbolicLink stat =
|
||||
(fileMode stat `intersectFileModes` fileTypeModes) == symbolicLinkMode
|
||||
isSocket stat =
|
||||
(fileMode stat `intersectFileModes` fileTypeModes) == socketMode
|
||||
|
||||
-- | @getFdStatus fd@ acts as 'getFileStatus' but uses a file descriptor @fd@.
|
||||
--
|
||||
-- Note: calls @fstat@.
|
||||
getFdStatus :: Fd -> IO FileStatus
|
||||
getFdStatus (Fd fd) = do
|
||||
fp <- mallocForeignPtrBytes (#const sizeof(struct stat))
|
||||
withForeignPtr fp $ \p ->
|
||||
throwErrnoIfMinus1_ "getFdStatus" (c_fstat fd p)
|
||||
return (FileStatus fp)
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Setting file times
|
||||
|
||||
#if HAVE_UTIMENSAT || HAVE_FUTIMENS
|
||||
data CTimeSpec = CTimeSpec EpochTime CLong
|
||||
|
||||
instance Storable CTimeSpec where
|
||||
sizeOf _ = #size struct timespec
|
||||
alignment _ = alignment (undefined :: CInt)
|
||||
poke p (CTimeSpec sec nsec) = do
|
||||
(#poke struct timespec, tv_sec ) p sec
|
||||
(#poke struct timespec, tv_nsec) p nsec
|
||||
peek p = do
|
||||
sec <- #{peek struct timespec, tv_sec } p
|
||||
nsec <- #{peek struct timespec, tv_nsec} p
|
||||
return $ CTimeSpec sec nsec
|
||||
|
||||
toCTimeSpec :: POSIXTime -> CTimeSpec
|
||||
toCTimeSpec t = CTimeSpec (CTime sec) (truncate $ 10^(9::Int) * frac)
|
||||
where
|
||||
(sec, frac) = if (frac' < 0) then (sec' - 1, frac' + 1) else (sec', frac')
|
||||
(sec', frac') = properFraction $ toRational t
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_UTIMENSAT
|
||||
foreign import ccall unsafe "utimensat"
|
||||
c_utimensat :: CInt -> CString -> Ptr CTimeSpec -> CInt -> IO CInt
|
||||
#endif
|
||||
|
||||
#if HAVE_FUTIMENS
|
||||
foreign import ccall unsafe "futimens"
|
||||
c_futimens :: CInt -> Ptr CTimeSpec -> IO CInt
|
||||
#endif
|
||||
|
||||
data CTimeVal = CTimeVal CLong CLong
|
||||
|
||||
instance Storable CTimeVal where
|
||||
sizeOf _ = #size struct timeval
|
||||
alignment _ = alignment (undefined :: CInt)
|
||||
poke p (CTimeVal sec usec) = do
|
||||
(#poke struct timeval, tv_sec ) p sec
|
||||
(#poke struct timeval, tv_usec) p usec
|
||||
peek p = do
|
||||
sec <- #{peek struct timeval, tv_sec } p
|
||||
usec <- #{peek struct timeval, tv_usec} p
|
||||
return $ CTimeVal sec usec
|
||||
|
||||
toCTimeVal :: POSIXTime -> CTimeVal
|
||||
toCTimeVal t = CTimeVal sec (truncate $ 10^(6::Int) * frac)
|
||||
where
|
||||
(sec, frac) = if (frac' < 0) then (sec' - 1, frac' + 1) else (sec', frac')
|
||||
(sec', frac') = properFraction $ toRational t
|
||||
|
||||
foreign import ccall unsafe "utimes"
|
||||
c_utimes :: CString -> Ptr CTimeVal -> IO CInt
|
||||
|
||||
#ifdef HAVE_LUTIMES
|
||||
foreign import ccall unsafe "lutimes"
|
||||
c_lutimes :: CString -> Ptr CTimeVal -> IO CInt
|
||||
#endif
|
||||
|
||||
#if HAVE_FUTIMES
|
||||
foreign import ccall unsafe "futimes"
|
||||
c_futimes :: CInt -> Ptr CTimeVal -> IO CInt
|
||||
#endif
|
||||
|
||||
-- | Like 'setFileTimesHiRes' but uses a file descriptor instead of a path.
|
||||
-- This operation is not supported on all platforms. On these platforms,
|
||||
-- this function will raise an exception.
|
||||
--
|
||||
-- Note: calls @futimens@ or @futimes@.
|
||||
--
|
||||
-- @since 2.7.0.0
|
||||
setFdTimesHiRes :: Fd -> POSIXTime -> POSIXTime -> IO ()
|
||||
#if HAVE_FUTIMENS
|
||||
setFdTimesHiRes (Fd fd) atime mtime =
|
||||
withArray [toCTimeSpec atime, toCTimeSpec mtime] $ \times ->
|
||||
throwErrnoIfMinus1_ "setFdTimesHiRes" (c_futimens fd times)
|
||||
#elif HAVE_FUTIMES
|
||||
setFdTimesHiRes (Fd fd) atime mtime =
|
||||
withArray [toCTimeVal atime, toCTimeVal mtime] $ \times ->
|
||||
throwErrnoIfMinus1_ "setFdTimesHiRes" (c_futimes fd times)
|
||||
#else
|
||||
setFdTimesHiRes =
|
||||
error "setSymbolicLinkTimesHiRes: not available on this platform"
|
||||
#endif
|
||||
|
||||
-- | Like 'touchFile' but uses a file descriptor instead of a path.
|
||||
-- This operation is not supported on all platforms. On these platforms,
|
||||
-- this function will raise an exception.
|
||||
--
|
||||
-- Note: calls @futimes@.
|
||||
--
|
||||
-- @since 2.7.0.0
|
||||
touchFd :: Fd -> IO ()
|
||||
#if HAVE_FUTIMES
|
||||
touchFd (Fd fd) =
|
||||
throwErrnoIfMinus1_ "touchFd" (c_futimes fd nullPtr)
|
||||
#else
|
||||
touchFd =
|
||||
error "touchFd: not available on this platform"
|
||||
#endif
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- fchown()
|
||||
|
||||
-- | Acts as 'setOwnerAndGroup' but uses a file descriptor instead of a
|
||||
-- 'FilePath'.
|
||||
--
|
||||
-- Note: calls @fchown@.
|
||||
setFdOwnerAndGroup :: Fd -> UserID -> GroupID -> IO ()
|
||||
setFdOwnerAndGroup (Fd fd) uid gid =
|
||||
throwErrnoIfMinus1_ "setFdOwnerAndGroup" (c_fchown fd uid gid)
|
||||
|
||||
foreign import ccall unsafe "fchown"
|
||||
c_fchown :: CInt -> CUid -> CGid -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- ftruncate()
|
||||
|
||||
-- | Acts as 'setFileSize' but uses a file descriptor instead of a 'FilePath'.
|
||||
--
|
||||
-- Note: calls @ftruncate@.
|
||||
setFdSize :: Fd -> FileOffset -> IO ()
|
||||
setFdSize (Fd fd) off =
|
||||
throwErrnoIfMinus1_ "setFdSize" (c_ftruncate fd off)
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- pathconf()/fpathconf() support
|
||||
|
||||
data PathVar
|
||||
= FileSizeBits {- _PC_FILESIZEBITS -}
|
||||
| LinkLimit {- _PC_LINK_MAX -}
|
||||
| InputLineLimit {- _PC_MAX_CANON -}
|
||||
| InputQueueLimit {- _PC_MAX_INPUT -}
|
||||
| FileNameLimit {- _PC_NAME_MAX -}
|
||||
| PathNameLimit {- _PC_PATH_MAX -}
|
||||
| PipeBufferLimit {- _PC_PIPE_BUF -}
|
||||
-- These are described as optional in POSIX:
|
||||
{- _PC_ALLOC_SIZE_MIN -}
|
||||
{- _PC_REC_INCR_XFER_SIZE -}
|
||||
{- _PC_REC_MAX_XFER_SIZE -}
|
||||
{- _PC_REC_MIN_XFER_SIZE -}
|
||||
{- _PC_REC_XFER_ALIGN -}
|
||||
| SymbolicLinkLimit {- _PC_SYMLINK_MAX -}
|
||||
| SetOwnerAndGroupIsRestricted {- _PC_CHOWN_RESTRICTED -}
|
||||
| FileNamesAreNotTruncated {- _PC_NO_TRUNC -}
|
||||
| VDisableChar {- _PC_VDISABLE -}
|
||||
| AsyncIOAvailable {- _PC_ASYNC_IO -}
|
||||
| PrioIOAvailable {- _PC_PRIO_IO -}
|
||||
| SyncIOAvailable {- _PC_SYNC_IO -}
|
||||
|
||||
pathVarConst :: PathVar -> CInt
|
||||
pathVarConst v = case v of
|
||||
LinkLimit -> (#const _PC_LINK_MAX)
|
||||
InputLineLimit -> (#const _PC_MAX_CANON)
|
||||
InputQueueLimit -> (#const _PC_MAX_INPUT)
|
||||
FileNameLimit -> (#const _PC_NAME_MAX)
|
||||
PathNameLimit -> (#const _PC_PATH_MAX)
|
||||
PipeBufferLimit -> (#const _PC_PIPE_BUF)
|
||||
SetOwnerAndGroupIsRestricted -> (#const _PC_CHOWN_RESTRICTED)
|
||||
FileNamesAreNotTruncated -> (#const _PC_NO_TRUNC)
|
||||
VDisableChar -> (#const _PC_VDISABLE)
|
||||
|
||||
#ifdef _PC_SYNC_IO
|
||||
SyncIOAvailable -> (#const _PC_SYNC_IO)
|
||||
#else
|
||||
SyncIOAvailable -> error "_PC_SYNC_IO not available"
|
||||
#endif
|
||||
|
||||
#ifdef _PC_ASYNC_IO
|
||||
AsyncIOAvailable -> (#const _PC_ASYNC_IO)
|
||||
#else
|
||||
AsyncIOAvailable -> error "_PC_ASYNC_IO not available"
|
||||
#endif
|
||||
|
||||
#ifdef _PC_PRIO_IO
|
||||
PrioIOAvailable -> (#const _PC_PRIO_IO)
|
||||
#else
|
||||
PrioIOAvailable -> error "_PC_PRIO_IO not available"
|
||||
#endif
|
||||
|
||||
#if _PC_FILESIZEBITS
|
||||
FileSizeBits -> (#const _PC_FILESIZEBITS)
|
||||
#else
|
||||
FileSizeBits -> error "_PC_FILESIZEBITS not available"
|
||||
#endif
|
||||
|
||||
#if _PC_SYMLINK_MAX
|
||||
SymbolicLinkLimit -> (#const _PC_SYMLINK_MAX)
|
||||
#else
|
||||
SymbolicLinkLimit -> error "_PC_SYMLINK_MAX not available"
|
||||
#endif
|
||||
|
||||
-- | @getFdPathVar var fd@ obtains the dynamic value of the requested
|
||||
-- configurable file limit or option associated with the file or directory
|
||||
-- attached to the open channel @fd@. For defined file limits, @getFdPathVar@
|
||||
-- returns the associated value. For defined file options, the result of
|
||||
-- @getFdPathVar@ is undefined, but not failure.
|
||||
--
|
||||
-- Note: calls @fpathconf@.
|
||||
getFdPathVar :: Fd -> PathVar -> IO Limit
|
||||
getFdPathVar (Fd fd) v =
|
||||
throwErrnoIfMinus1 "getFdPathVar" $
|
||||
c_fpathconf fd (pathVarConst v)
|
||||
|
||||
foreign import ccall unsafe "fpathconf"
|
||||
c_fpathconf :: CInt -> CInt -> IO CLong
|
@ -1,92 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.IO
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX IO support. These types and functions correspond to the unix
|
||||
-- functions open(2), close(2), etc. For more portable functions
|
||||
-- which are more like fopen(3) and friends from stdio.h, see
|
||||
-- "System.IO".
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
module System.Posix.IO (
|
||||
-- * Input \/ Output
|
||||
|
||||
-- ** Standard file descriptors
|
||||
stdInput, stdOutput, stdError,
|
||||
|
||||
-- ** Opening and closing files
|
||||
OpenMode(..),
|
||||
OpenFileFlags(..), defaultFileFlags,
|
||||
openFd, createFile,
|
||||
closeFd,
|
||||
|
||||
-- ** Reading\/writing data
|
||||
-- |Programmers using the 'fdRead' and 'fdWrite' API should be aware that
|
||||
-- EAGAIN exceptions may occur for non-blocking IO!
|
||||
|
||||
fdRead, fdWrite,
|
||||
fdReadBuf, fdWriteBuf,
|
||||
|
||||
-- ** Seeking
|
||||
fdSeek,
|
||||
|
||||
-- ** File options
|
||||
FdOption(..),
|
||||
queryFdOption,
|
||||
setFdOption,
|
||||
|
||||
-- ** Locking
|
||||
FileLock,
|
||||
LockRequest(..),
|
||||
getLock, setLock,
|
||||
waitToSetLock,
|
||||
|
||||
-- ** Pipes
|
||||
createPipe,
|
||||
|
||||
-- ** Duplicating file descriptors
|
||||
dup, dupTo,
|
||||
|
||||
-- ** Converting file descriptors to\/from Handles
|
||||
handleToFd,
|
||||
fdToHandle,
|
||||
|
||||
) where
|
||||
|
||||
import System.Posix.Types
|
||||
import System.Posix.Error
|
||||
import System.Posix.IO.Common
|
||||
import System.Posix.Internals ( withFilePath )
|
||||
|
||||
-- |Open and optionally create this file. See 'System.Posix.Files'
|
||||
-- for information on how to use the 'FileMode' type.
|
||||
openFd :: FilePath
|
||||
-> OpenMode
|
||||
-> OpenFileFlags
|
||||
-> IO Fd
|
||||
openFd name how flags =
|
||||
withFilePath name $ \str ->
|
||||
throwErrnoPathIfMinus1Retry "openFd" name $
|
||||
open_ str how flags
|
||||
|
||||
-- |Create and open this file in WriteOnly mode. A special case of
|
||||
-- 'openFd'. See 'System.Posix.Files' for information on how to use
|
||||
-- the 'FileMode' type.
|
||||
|
||||
createFile :: FilePath -> FileMode -> IO Fd
|
||||
createFile name mode
|
||||
= openFd name WriteOnly defaultFileFlags{ trunc=True, creat=(Just mode) }
|
@ -1,92 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.IO.ByteString
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX IO support. These types and functions correspond to the unix
|
||||
-- functions open(2), close(2), etc. For more portable functions
|
||||
-- which are more like fopen(3) and friends from stdio.h, see
|
||||
-- "System.IO".
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
module System.Posix.IO.ByteString (
|
||||
-- * Input \/ Output
|
||||
|
||||
-- ** Standard file descriptors
|
||||
stdInput, stdOutput, stdError,
|
||||
|
||||
-- ** Opening and closing files
|
||||
OpenMode(..),
|
||||
OpenFileFlags(..), defaultFileFlags,
|
||||
openFd, createFile,
|
||||
closeFd,
|
||||
|
||||
-- ** Reading\/writing data
|
||||
-- |Programmers using the 'fdRead' and 'fdWrite' API should be aware that
|
||||
-- EAGAIN exceptions may occur for non-blocking IO!
|
||||
|
||||
fdRead, fdWrite,
|
||||
fdReadBuf, fdWriteBuf,
|
||||
|
||||
-- ** Seeking
|
||||
fdSeek,
|
||||
|
||||
-- ** File options
|
||||
FdOption(..),
|
||||
queryFdOption,
|
||||
setFdOption,
|
||||
|
||||
-- ** Locking
|
||||
FileLock,
|
||||
LockRequest(..),
|
||||
getLock, setLock,
|
||||
waitToSetLock,
|
||||
|
||||
-- ** Pipes
|
||||
createPipe,
|
||||
|
||||
-- ** Duplicating file descriptors
|
||||
dup, dupTo,
|
||||
|
||||
-- ** Converting file descriptors to\/from Handles
|
||||
handleToFd,
|
||||
fdToHandle,
|
||||
|
||||
) where
|
||||
|
||||
import System.Posix.Types
|
||||
import System.Posix.IO.Common
|
||||
|
||||
import System.Posix.ByteString.FilePath
|
||||
|
||||
-- |Open and optionally create this file. See 'System.Posix.Files'
|
||||
-- for information on how to use the 'FileMode' type.
|
||||
openFd :: RawFilePath
|
||||
-> OpenMode
|
||||
-> OpenFileFlags
|
||||
-> IO Fd
|
||||
openFd name how flags =
|
||||
withFilePath name $ \str ->
|
||||
throwErrnoPathIfMinus1Retry "openFd" name $
|
||||
open_ str how flags
|
||||
|
||||
-- |Create and open this file in WriteOnly mode. A special case of
|
||||
-- 'openFd'. See 'System.Posix.Files' for information on how to use
|
||||
-- the 'FileMode' type.
|
||||
|
||||
createFile :: RawFilePath -> FileMode -> IO Fd
|
||||
createFile name mode
|
||||
= openFd name WriteOnly defaultFileFlags{ trunc=True, creat=(Just mode) }
|
@ -1,443 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
{-# LANGUAGE NondecreasingIndentation #-}
|
||||
{-# LANGUAGE RecordWildCards #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.IO.Common
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.IO.Common (
|
||||
-- * Input \/ Output
|
||||
|
||||
-- ** Standard file descriptors
|
||||
stdInput, stdOutput, stdError,
|
||||
|
||||
-- ** Opening and closing files
|
||||
OpenMode(..),
|
||||
OpenFileFlags(..), defaultFileFlags,
|
||||
open_,
|
||||
closeFd,
|
||||
|
||||
-- ** Reading\/writing data
|
||||
-- |Programmers using the 'fdRead' and 'fdWrite' API should be aware that
|
||||
-- EAGAIN exceptions may occur for non-blocking IO!
|
||||
|
||||
fdRead, fdWrite,
|
||||
fdReadBuf, fdWriteBuf,
|
||||
|
||||
-- ** Seeking
|
||||
fdSeek,
|
||||
|
||||
-- ** File options
|
||||
FdOption(..),
|
||||
queryFdOption,
|
||||
setFdOption,
|
||||
|
||||
-- ** Locking
|
||||
FileLock,
|
||||
LockRequest(..),
|
||||
getLock, setLock,
|
||||
waitToSetLock,
|
||||
|
||||
-- ** Pipes
|
||||
createPipe,
|
||||
|
||||
-- ** Duplicating file descriptors
|
||||
dup, dupTo,
|
||||
|
||||
-- ** Converting file descriptors to\/from Handles
|
||||
handleToFd,
|
||||
fdToHandle,
|
||||
|
||||
) where
|
||||
|
||||
import System.IO
|
||||
import System.IO.Error
|
||||
import System.Posix.Types
|
||||
import qualified System.Posix.Internals as Base
|
||||
|
||||
import Foreign
|
||||
import Foreign.C
|
||||
|
||||
import GHC.IO.Handle.Internals
|
||||
import GHC.IO.Handle.Types
|
||||
import qualified GHC.IO.FD as FD
|
||||
import qualified GHC.IO.Handle.FD as FD
|
||||
import GHC.IO.Exception
|
||||
import Data.Typeable (cast)
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Pipes
|
||||
-- |The 'createPipe' function creates a pair of connected file
|
||||
-- descriptors. The first component is the fd to read from, the second
|
||||
-- is the write end. Although pipes may be bidirectional, this
|
||||
-- behaviour is not portable and programmers should use two separate
|
||||
-- pipes for this purpose. May throw an exception if this is an
|
||||
-- invalid descriptor.
|
||||
|
||||
createPipe :: IO (Fd, Fd)
|
||||
createPipe =
|
||||
allocaArray 2 $ \p_fd -> do
|
||||
throwErrnoIfMinus1_ "createPipe" (c_pipe p_fd)
|
||||
rfd <- peekElemOff p_fd 0
|
||||
wfd <- peekElemOff p_fd 1
|
||||
return (Fd rfd, Fd wfd)
|
||||
|
||||
foreign import ccall unsafe "pipe"
|
||||
c_pipe :: Ptr CInt -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Duplicating file descriptors
|
||||
|
||||
-- | May throw an exception if this is an invalid descriptor.
|
||||
dup :: Fd -> IO Fd
|
||||
dup (Fd fd) = do r <- throwErrnoIfMinus1 "dup" (c_dup fd); return (Fd r)
|
||||
|
||||
-- | May throw an exception if this is an invalid descriptor.
|
||||
dupTo :: Fd -> Fd -> IO Fd
|
||||
dupTo (Fd fd1) (Fd fd2) = do
|
||||
r <- throwErrnoIfMinus1 "dupTo" (c_dup2 fd1 fd2)
|
||||
return (Fd r)
|
||||
|
||||
foreign import ccall unsafe "dup"
|
||||
c_dup :: CInt -> IO CInt
|
||||
|
||||
foreign import ccall unsafe "dup2"
|
||||
c_dup2 :: CInt -> CInt -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Opening and closing files
|
||||
|
||||
stdInput, stdOutput, stdError :: Fd
|
||||
stdInput = Fd (#const STDIN_FILENO)
|
||||
stdOutput = Fd (#const STDOUT_FILENO)
|
||||
stdError = Fd (#const STDERR_FILENO)
|
||||
|
||||
data OpenMode = ReadOnly | WriteOnly | ReadWrite
|
||||
deriving (Read, Show, Eq, Ord)
|
||||
|
||||
-- |Correspond to some of the int flags from C's fcntl.h.
|
||||
data OpenFileFlags =
|
||||
OpenFileFlags {
|
||||
append :: Bool, -- ^ O_APPEND
|
||||
exclusive :: Bool, -- ^ O_EXCL
|
||||
--
|
||||
-- __NOTE__: Result is undefined if 'creat' is 'Nothing'.
|
||||
noctty :: Bool, -- ^ O_NOCTTY
|
||||
nonBlock :: Bool, -- ^ O_NONBLOCK
|
||||
trunc :: Bool, -- ^ O_TRUNC
|
||||
nofollow :: Bool, -- ^ O_NOFOLLOW
|
||||
--
|
||||
-- @since 2.8.0.0
|
||||
creat :: Maybe FileMode, -- ^ O_CREAT
|
||||
--
|
||||
-- @since 2.8.0.0
|
||||
cloexec :: Bool, -- ^ O_CLOEXEC
|
||||
--
|
||||
-- @since 2.8.0.0
|
||||
directory :: Bool, -- ^ O_DIRECTORY
|
||||
--
|
||||
-- @since 2.8.0.0
|
||||
sync :: Bool -- ^ O_SYNC
|
||||
--
|
||||
-- @since 2.8.0.0
|
||||
}
|
||||
deriving (Read, Show, Eq, Ord)
|
||||
|
||||
|
||||
-- | Default values for the 'OpenFileFlags' type.
|
||||
--
|
||||
-- Each field of 'OpenFileFlags' is either 'False' or 'Nothing'
|
||||
-- respectively.
|
||||
defaultFileFlags :: OpenFileFlags
|
||||
defaultFileFlags =
|
||||
OpenFileFlags {
|
||||
append = False,
|
||||
exclusive = False,
|
||||
noctty = False,
|
||||
nonBlock = False,
|
||||
trunc = False,
|
||||
nofollow = False,
|
||||
creat = Nothing,
|
||||
cloexec = False,
|
||||
directory = False,
|
||||
sync = False
|
||||
}
|
||||
|
||||
|
||||
-- |Open and optionally create this file. See 'System.Posix.Files'
|
||||
-- for information on how to use the 'FileMode' type.
|
||||
open_ :: CString
|
||||
-> OpenMode
|
||||
-> OpenFileFlags
|
||||
-> IO Fd
|
||||
open_ str how (OpenFileFlags appendFlag exclusiveFlag nocttyFlag
|
||||
nonBlockFlag truncateFlag nofollowFlag
|
||||
creatFlag cloexecFlag directoryFlag
|
||||
syncFlag) = do
|
||||
fd <- c_open str all_flags mode_w
|
||||
return (Fd fd)
|
||||
where
|
||||
all_flags = creat .|. flags .|. open_mode
|
||||
|
||||
flags =
|
||||
(if appendFlag then (#const O_APPEND) else 0) .|.
|
||||
(if exclusiveFlag then (#const O_EXCL) else 0) .|.
|
||||
(if nocttyFlag then (#const O_NOCTTY) else 0) .|.
|
||||
(if nonBlockFlag then (#const O_NONBLOCK) else 0) .|.
|
||||
(if truncateFlag then (#const O_TRUNC) else 0) .|.
|
||||
(if nofollowFlag then (#const O_NOFOLLOW) else 0) .|.
|
||||
(if cloexecFlag then (#const O_CLOEXEC) else 0) .|.
|
||||
(if directoryFlag then (#const O_DIRECTORY) else 0) .|.
|
||||
(if syncFlag then (#const O_SYNC) else 0)
|
||||
|
||||
(creat, mode_w) = case creatFlag of
|
||||
Nothing -> (0,0)
|
||||
Just x -> ((#const O_CREAT), x)
|
||||
|
||||
open_mode = case how of
|
||||
ReadOnly -> (#const O_RDONLY)
|
||||
WriteOnly -> (#const O_WRONLY)
|
||||
ReadWrite -> (#const O_RDWR)
|
||||
|
||||
foreign import capi unsafe "HsUnix.h open"
|
||||
c_open :: CString -> CInt -> CMode -> IO CInt
|
||||
|
||||
-- |Close this file descriptor. May throw an exception if this is an
|
||||
-- invalid descriptor.
|
||||
|
||||
closeFd :: Fd -> IO ()
|
||||
closeFd (Fd fd) = throwErrnoIfMinus1_ "closeFd" (c_close fd)
|
||||
-- Here we don't to retry on EINTR because according to
|
||||
-- http://pubs.opengroup.org/onlinepubs/9699919799/functions/close.html
|
||||
-- "with errno set to [EINTR] [...] the state of fildes is unspecified"
|
||||
-- and on Linux, already the first close() removes the FD from the process's
|
||||
-- FD table so closing a second time is invalid
|
||||
-- (see http://man7.org/linux/man-pages/man2/close.2.html#NOTES).
|
||||
|
||||
foreign import ccall unsafe "HsUnix.h close"
|
||||
c_close :: CInt -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Converting file descriptors to/from Handles
|
||||
|
||||
-- | Extracts the 'Fd' from a 'Handle'. This function has the side effect
|
||||
-- of closing the 'Handle' and flushing its write buffer, if necessary.
|
||||
handleToFd :: Handle -> IO Fd
|
||||
|
||||
-- | Converts an 'Fd' into a 'Handle' that can be used with the
|
||||
-- standard Haskell IO library (see "System.IO").
|
||||
fdToHandle :: Fd -> IO Handle
|
||||
fdToHandle fd = FD.fdToHandle (fromIntegral fd)
|
||||
|
||||
handleToFd h@(FileHandle _ m) = do
|
||||
withHandle' "handleToFd" h m $ handleToFd' h
|
||||
handleToFd h@(DuplexHandle _ r w) = do
|
||||
_ <- withHandle' "handleToFd" h r $ handleToFd' h
|
||||
withHandle' "handleToFd" h w $ handleToFd' h
|
||||
-- for a DuplexHandle, make sure we mark both sides as closed,
|
||||
-- otherwise a finalizer will come along later and close the other
|
||||
-- side. (#3914)
|
||||
|
||||
handleToFd' :: Handle -> Handle__ -> IO (Handle__, Fd)
|
||||
handleToFd' h h_@Handle__{haType=_,..} = do
|
||||
case cast haDevice of
|
||||
Nothing -> ioError (ioeSetErrorString (mkIOError IllegalOperation
|
||||
"handleToFd" (Just h) Nothing)
|
||||
"handle is not a file descriptor")
|
||||
Just fd -> do
|
||||
-- converting a Handle into an Fd effectively means
|
||||
-- letting go of the Handle; it is put into a closed
|
||||
-- state as a result.
|
||||
flushWriteBuffer h_
|
||||
FD.release fd
|
||||
return (Handle__{haType=ClosedHandle,..}, Fd (FD.fdFD fd))
|
||||
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Fd options
|
||||
|
||||
data FdOption = AppendOnWrite -- ^O_APPEND
|
||||
| CloseOnExec -- ^FD_CLOEXEC
|
||||
| NonBlockingRead -- ^O_NONBLOCK
|
||||
| SynchronousWrites -- ^O_SYNC
|
||||
|
||||
fdOption2Int :: FdOption -> CInt
|
||||
fdOption2Int CloseOnExec = (#const FD_CLOEXEC)
|
||||
fdOption2Int AppendOnWrite = (#const O_APPEND)
|
||||
fdOption2Int NonBlockingRead = (#const O_NONBLOCK)
|
||||
fdOption2Int SynchronousWrites = (#const O_SYNC)
|
||||
|
||||
-- | May throw an exception if this is an invalid descriptor.
|
||||
queryFdOption :: Fd -> FdOption -> IO Bool
|
||||
queryFdOption (Fd fd) opt = do
|
||||
r <- throwErrnoIfMinus1 "queryFdOption" (Base.c_fcntl_read fd flag)
|
||||
return ((r .&. fdOption2Int opt) /= 0)
|
||||
where
|
||||
flag = case opt of
|
||||
CloseOnExec -> (#const F_GETFD)
|
||||
_ -> (#const F_GETFL)
|
||||
|
||||
-- | May throw an exception if this is an invalid descriptor.
|
||||
setFdOption :: Fd -> FdOption -> Bool -> IO ()
|
||||
setFdOption (Fd fd) opt val = do
|
||||
r <- throwErrnoIfMinus1 "setFdOption" (Base.c_fcntl_read fd getflag)
|
||||
let r' | val = r .|. opt_val
|
||||
| otherwise = r .&. (complement opt_val)
|
||||
throwErrnoIfMinus1_ "setFdOption"
|
||||
(Base.c_fcntl_write fd setflag (fromIntegral r'))
|
||||
where
|
||||
(getflag,setflag)= case opt of
|
||||
CloseOnExec -> ((#const F_GETFD),(#const F_SETFD))
|
||||
_ -> ((#const F_GETFL),(#const F_SETFL))
|
||||
opt_val = fdOption2Int opt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Seeking
|
||||
|
||||
mode2Int :: SeekMode -> CInt
|
||||
mode2Int AbsoluteSeek = (#const SEEK_SET)
|
||||
mode2Int RelativeSeek = (#const SEEK_CUR)
|
||||
mode2Int SeekFromEnd = (#const SEEK_END)
|
||||
|
||||
-- | May throw an exception if this is an invalid descriptor.
|
||||
fdSeek :: Fd -> SeekMode -> FileOffset -> IO FileOffset
|
||||
fdSeek (Fd fd) mode off =
|
||||
throwErrnoIfMinus1 "fdSeek" (Base.c_lseek fd off (mode2Int mode))
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Locking
|
||||
|
||||
data LockRequest = ReadLock
|
||||
| WriteLock
|
||||
| Unlock
|
||||
|
||||
type FileLock = (LockRequest, SeekMode, FileOffset, FileOffset)
|
||||
|
||||
-- | May throw an exception if this is an invalid descriptor.
|
||||
getLock :: Fd -> FileLock -> IO (Maybe (ProcessID, FileLock))
|
||||
getLock (Fd fd) lock =
|
||||
allocaLock lock $ \p_flock -> do
|
||||
throwErrnoIfMinus1_ "getLock" (Base.c_fcntl_lock fd (#const F_GETLK) p_flock)
|
||||
result <- bytes2ProcessIDAndLock p_flock
|
||||
return (maybeResult result)
|
||||
where
|
||||
maybeResult (_, (Unlock, _, _, _)) = Nothing
|
||||
maybeResult x = Just x
|
||||
|
||||
allocaLock :: FileLock -> (Ptr Base.CFLock -> IO a) -> IO a
|
||||
allocaLock (lockreq, mode, start, len) io =
|
||||
allocaBytes (#const sizeof(struct flock)) $ \p -> do
|
||||
(#poke struct flock, l_type) p (lockReq2Int lockreq :: CShort)
|
||||
(#poke struct flock, l_whence) p (fromIntegral (mode2Int mode) :: CShort)
|
||||
(#poke struct flock, l_start) p start
|
||||
(#poke struct flock, l_len) p len
|
||||
io p
|
||||
|
||||
lockReq2Int :: LockRequest -> CShort
|
||||
lockReq2Int ReadLock = (#const F_RDLCK)
|
||||
lockReq2Int WriteLock = (#const F_WRLCK)
|
||||
lockReq2Int Unlock = (#const F_UNLCK)
|
||||
|
||||
bytes2ProcessIDAndLock :: Ptr Base.CFLock -> IO (ProcessID, FileLock)
|
||||
bytes2ProcessIDAndLock p = do
|
||||
req <- (#peek struct flock, l_type) p
|
||||
mode <- (#peek struct flock, l_whence) p
|
||||
start <- (#peek struct flock, l_start) p
|
||||
len <- (#peek struct flock, l_len) p
|
||||
pid <- (#peek struct flock, l_pid) p
|
||||
return (pid, (int2req req, int2mode mode, start, len))
|
||||
where
|
||||
int2req :: CShort -> LockRequest
|
||||
int2req (#const F_RDLCK) = ReadLock
|
||||
int2req (#const F_WRLCK) = WriteLock
|
||||
int2req (#const F_UNLCK) = Unlock
|
||||
int2req _ = error $ "int2req: bad argument"
|
||||
|
||||
int2mode :: CShort -> SeekMode
|
||||
int2mode (#const SEEK_SET) = AbsoluteSeek
|
||||
int2mode (#const SEEK_CUR) = RelativeSeek
|
||||
int2mode (#const SEEK_END) = SeekFromEnd
|
||||
int2mode _ = error $ "int2mode: bad argument"
|
||||
|
||||
-- | May throw an exception if this is an invalid descriptor.
|
||||
setLock :: Fd -> FileLock -> IO ()
|
||||
setLock (Fd fd) lock = do
|
||||
allocaLock lock $ \p_flock ->
|
||||
throwErrnoIfMinus1_ "setLock" (Base.c_fcntl_lock fd (#const F_SETLK) p_flock)
|
||||
|
||||
-- | May throw an exception if this is an invalid descriptor.
|
||||
waitToSetLock :: Fd -> FileLock -> IO ()
|
||||
waitToSetLock (Fd fd) lock = do
|
||||
allocaLock lock $ \p_flock ->
|
||||
throwErrnoIfMinus1_ "waitToSetLock"
|
||||
(Base.c_fcntl_lock fd (#const F_SETLKW) p_flock)
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- fd{Read,Write}
|
||||
|
||||
-- | Read data from an 'Fd' and convert it to a 'String' using the locale encoding.
|
||||
-- Throws an exception if this is an invalid descriptor, or EOF has been
|
||||
-- reached.
|
||||
fdRead :: Fd
|
||||
-> ByteCount -- ^How many bytes to read
|
||||
-> IO (String, ByteCount) -- ^The bytes read, how many bytes were read.
|
||||
fdRead _fd 0 = return ("", 0)
|
||||
fdRead fd nbytes = do
|
||||
allocaBytes (fromIntegral nbytes) $ \ buf -> do
|
||||
rc <- fdReadBuf fd buf nbytes
|
||||
case rc of
|
||||
0 -> ioError (ioeSetErrorString (mkIOError EOF "fdRead" Nothing Nothing) "EOF")
|
||||
n -> do
|
||||
s <- peekCStringLen (castPtr buf, fromIntegral n)
|
||||
return (s, n)
|
||||
|
||||
-- | Read data from an 'Fd' into memory. This is exactly equivalent
|
||||
-- to the POSIX @read@ function.
|
||||
fdReadBuf :: Fd
|
||||
-> Ptr Word8 -- ^ Memory in which to put the data
|
||||
-> ByteCount -- ^ Maximum number of bytes to read
|
||||
-> IO ByteCount -- ^ Number of bytes read (zero for EOF)
|
||||
fdReadBuf _fd _buf 0 = return 0
|
||||
fdReadBuf fd buf nbytes =
|
||||
fmap fromIntegral $
|
||||
throwErrnoIfMinus1Retry "fdReadBuf" $
|
||||
c_safe_read (fromIntegral fd) (castPtr buf) nbytes
|
||||
|
||||
foreign import ccall safe "read"
|
||||
c_safe_read :: CInt -> Ptr CChar -> CSize -> IO CSsize
|
||||
|
||||
-- | Write a 'String' to an 'Fd' using the locale encoding.
|
||||
fdWrite :: Fd -> String -> IO ByteCount
|
||||
fdWrite fd str =
|
||||
withCStringLen str $ \ (buf,len) ->
|
||||
fdWriteBuf fd (castPtr buf) (fromIntegral len)
|
||||
|
||||
-- | Write data from memory to an 'Fd'. This is exactly equivalent
|
||||
-- to the POSIX @write@ function.
|
||||
fdWriteBuf :: Fd
|
||||
-> Ptr Word8 -- ^ Memory containing the data to write
|
||||
-> ByteCount -- ^ Maximum number of bytes to write
|
||||
-> IO ByteCount -- ^ Number of bytes written
|
||||
fdWriteBuf fd buf len =
|
||||
fmap fromIntegral $
|
||||
throwErrnoIfMinus1Retry "fdWriteBuf" $
|
||||
c_safe_write (fromIntegral fd) (castPtr buf) len
|
||||
|
||||
foreign import ccall safe "write"
|
||||
c_safe_write :: CInt -> Ptr CChar -> CSize -> IO CSsize
|
@ -1,125 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Process
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX process support. See also the System.Cmd and System.Process
|
||||
-- modules in the process package.
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.Process (
|
||||
-- * Processes
|
||||
|
||||
-- ** Forking and executing
|
||||
forkProcess,
|
||||
forkProcessWithUnmask,
|
||||
executeFile,
|
||||
|
||||
-- ** Exiting
|
||||
exitImmediately,
|
||||
|
||||
-- ** Process environment
|
||||
getProcessID,
|
||||
getParentProcessID,
|
||||
|
||||
-- ** Process groups
|
||||
getProcessGroupID,
|
||||
getProcessGroupIDOf,
|
||||
createProcessGroupFor,
|
||||
joinProcessGroup,
|
||||
setProcessGroupIDOf,
|
||||
|
||||
-- ** Sessions
|
||||
createSession,
|
||||
|
||||
-- ** Process times
|
||||
ProcessTimes(..),
|
||||
getProcessTimes,
|
||||
|
||||
-- ** Scheduling priority
|
||||
nice,
|
||||
getProcessPriority,
|
||||
getProcessGroupPriority,
|
||||
getUserPriority,
|
||||
setProcessPriority,
|
||||
setProcessGroupPriority,
|
||||
setUserPriority,
|
||||
|
||||
-- ** Process status
|
||||
ProcessStatus(..),
|
||||
getProcessStatus,
|
||||
getAnyProcessStatus,
|
||||
getGroupProcessStatus,
|
||||
|
||||
-- ** Deprecated
|
||||
createProcessGroup,
|
||||
setProcessGroupID,
|
||||
|
||||
) where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import Foreign
|
||||
import Foreign.C
|
||||
import System.Posix.Process.Internals
|
||||
import System.Posix.Process.Common
|
||||
import System.Posix.Internals ( withFilePath )
|
||||
|
||||
-- | @'executeFile' cmd args env@ calls one of the
|
||||
-- @execv*@ family, depending on whether or not the current
|
||||
-- PATH is to be searched for the command, and whether or not an
|
||||
-- environment is provided to supersede the process's current
|
||||
-- environment. The basename (leading directory names suppressed) of
|
||||
-- the command is passed to @execv*@ as @arg[0]@;
|
||||
-- the argument list passed to 'executeFile' therefore
|
||||
-- begins with @arg[1]@.
|
||||
executeFile :: FilePath -- ^ Command
|
||||
-> Bool -- ^ Search PATH?
|
||||
-> [String] -- ^ Arguments
|
||||
-> Maybe [(String, String)] -- ^ Environment
|
||||
-> IO a
|
||||
executeFile path search args Nothing = do
|
||||
withFilePath path $ \s ->
|
||||
withMany withFilePath (path:args) $ \cstrs ->
|
||||
withArray0 nullPtr cstrs $ \arr -> do
|
||||
pPrPr_disableITimers
|
||||
if search
|
||||
then throwErrnoPathIfMinus1_ "executeFile" path (c_execvp s arr)
|
||||
else throwErrnoPathIfMinus1_ "executeFile" path (c_execv s arr)
|
||||
return undefined -- never reached
|
||||
|
||||
executeFile path search args (Just env) = do
|
||||
withFilePath path $ \s ->
|
||||
withMany withFilePath (path:args) $ \cstrs ->
|
||||
withArray0 nullPtr cstrs $ \arg_arr ->
|
||||
let env' = map (\ (name, val) -> name ++ ('=' : val)) env in
|
||||
withMany withFilePath env' $ \cenv ->
|
||||
withArray0 nullPtr cenv $ \env_arr -> do
|
||||
pPrPr_disableITimers
|
||||
if search
|
||||
then throwErrnoPathIfMinus1_ "executeFile" path
|
||||
(c_execvpe s arg_arr env_arr)
|
||||
else throwErrnoPathIfMinus1_ "executeFile" path
|
||||
(c_execve s arg_arr env_arr)
|
||||
return undefined -- never reached
|
||||
|
||||
foreign import ccall unsafe "execvp"
|
||||
c_execvp :: CString -> Ptr CString -> IO CInt
|
||||
|
||||
foreign import ccall unsafe "execv"
|
||||
c_execv :: CString -> Ptr CString -> IO CInt
|
||||
|
||||
foreign import ccall unsafe "execve"
|
||||
c_execve :: CString -> Ptr CString -> Ptr CString -> IO CInt
|
||||
|
@ -1,136 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Process.ByteString
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX process support. See also the System.Cmd and System.Process
|
||||
-- modules in the process package.
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.Process.ByteString (
|
||||
-- * Processes
|
||||
|
||||
-- ** Forking and executing
|
||||
forkProcess,
|
||||
forkProcessWithUnmask,
|
||||
executeFile,
|
||||
|
||||
-- ** Exiting
|
||||
exitImmediately,
|
||||
|
||||
-- ** Process environment
|
||||
getProcessID,
|
||||
getParentProcessID,
|
||||
|
||||
-- ** Process groups
|
||||
getProcessGroupID,
|
||||
getProcessGroupIDOf,
|
||||
createProcessGroupFor,
|
||||
joinProcessGroup,
|
||||
setProcessGroupIDOf,
|
||||
|
||||
-- ** Sessions
|
||||
createSession,
|
||||
|
||||
-- ** Process times
|
||||
ProcessTimes(..),
|
||||
getProcessTimes,
|
||||
|
||||
-- ** Scheduling priority
|
||||
nice,
|
||||
getProcessPriority,
|
||||
getProcessGroupPriority,
|
||||
getUserPriority,
|
||||
setProcessPriority,
|
||||
setProcessGroupPriority,
|
||||
setUserPriority,
|
||||
|
||||
-- ** Process status
|
||||
ProcessStatus(..),
|
||||
getProcessStatus,
|
||||
getAnyProcessStatus,
|
||||
getGroupProcessStatus,
|
||||
|
||||
-- ** Deprecated
|
||||
createProcessGroup,
|
||||
setProcessGroupID,
|
||||
|
||||
) where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import Foreign
|
||||
import System.Posix.Process.Internals
|
||||
import System.Posix.Process.Common
|
||||
|
||||
import Foreign.C hiding (
|
||||
throwErrnoPath,
|
||||
throwErrnoPathIf,
|
||||
throwErrnoPathIf_,
|
||||
throwErrnoPathIfNull,
|
||||
throwErrnoPathIfMinus1,
|
||||
throwErrnoPathIfMinus1_ )
|
||||
|
||||
import Data.ByteString (ByteString)
|
||||
import qualified Data.ByteString.Char8 as BC
|
||||
|
||||
import System.Posix.ByteString.FilePath
|
||||
|
||||
-- | @'executeFile' cmd args env@ calls one of the
|
||||
-- @execv*@ family, depending on whether or not the current
|
||||
-- PATH is to be searched for the command, and whether or not an
|
||||
-- environment is provided to supersede the process's current
|
||||
-- environment. The basename (leading directory names suppressed) of
|
||||
-- the command is passed to @execv*@ as @arg[0]@;
|
||||
-- the argument list passed to 'executeFile' therefore
|
||||
-- begins with @arg[1]@.
|
||||
executeFile :: RawFilePath -- ^ Command
|
||||
-> Bool -- ^ Search PATH?
|
||||
-> [ByteString] -- ^ Arguments
|
||||
-> Maybe [(ByteString, ByteString)] -- ^ Environment
|
||||
-> IO a
|
||||
executeFile path search args Nothing = do
|
||||
withFilePath path $ \s ->
|
||||
withMany withFilePath (path:args) $ \cstrs ->
|
||||
withArray0 nullPtr cstrs $ \arr -> do
|
||||
pPrPr_disableITimers
|
||||
if search
|
||||
then throwErrnoPathIfMinus1_ "executeFile" path (c_execvp s arr)
|
||||
else throwErrnoPathIfMinus1_ "executeFile" path (c_execv s arr)
|
||||
return undefined -- never reached
|
||||
|
||||
executeFile path search args (Just env) = do
|
||||
withFilePath path $ \s ->
|
||||
withMany withFilePath (path:args) $ \cstrs ->
|
||||
withArray0 nullPtr cstrs $ \arg_arr ->
|
||||
let env' = map (\ (name, val) -> name `BC.append` ('=' `BC.cons` val)) env in
|
||||
withMany withFilePath env' $ \cenv ->
|
||||
withArray0 nullPtr cenv $ \env_arr -> do
|
||||
pPrPr_disableITimers
|
||||
if search
|
||||
then throwErrnoPathIfMinus1_ "executeFile" path
|
||||
(c_execvpe s arg_arr env_arr)
|
||||
else throwErrnoPathIfMinus1_ "executeFile" path
|
||||
(c_execve s arg_arr env_arr)
|
||||
return undefined -- never reached
|
||||
|
||||
foreign import ccall unsafe "execvp"
|
||||
c_execvp :: CString -> Ptr CString -> IO CInt
|
||||
|
||||
foreign import ccall unsafe "execv"
|
||||
c_execv :: CString -> Ptr CString -> IO CInt
|
||||
|
||||
foreign import ccall unsafe "execve"
|
||||
c_execve :: CString -> Ptr CString -> Ptr CString -> IO CInt
|
@ -1,430 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
{-# LANGUAGE InterruptibleFFI, RankNTypes #-}
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Process.Common
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX process support. See also the System.Cmd and System.Process
|
||||
-- modules in the process package.
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.Process.Common (
|
||||
-- * Processes
|
||||
|
||||
-- ** Forking and executing
|
||||
forkProcess,
|
||||
forkProcessWithUnmask,
|
||||
|
||||
-- ** Exiting
|
||||
exitImmediately,
|
||||
|
||||
-- ** Process environment
|
||||
getProcessID,
|
||||
getParentProcessID,
|
||||
|
||||
-- ** Process groups
|
||||
getProcessGroupID,
|
||||
getProcessGroupIDOf,
|
||||
createProcessGroupFor,
|
||||
joinProcessGroup,
|
||||
setProcessGroupIDOf,
|
||||
|
||||
-- ** Sessions
|
||||
createSession,
|
||||
|
||||
-- ** Process times
|
||||
ProcessTimes(..),
|
||||
getProcessTimes,
|
||||
|
||||
-- ** Scheduling priority
|
||||
nice,
|
||||
getProcessPriority,
|
||||
getProcessGroupPriority,
|
||||
getUserPriority,
|
||||
setProcessPriority,
|
||||
setProcessGroupPriority,
|
||||
setUserPriority,
|
||||
|
||||
-- ** Process status
|
||||
ProcessStatus(..),
|
||||
getProcessStatus,
|
||||
getAnyProcessStatus,
|
||||
getGroupProcessStatus,
|
||||
|
||||
-- ** Deprecated
|
||||
createProcessGroup,
|
||||
setProcessGroupID,
|
||||
|
||||
) where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import Foreign.C.Error
|
||||
import Foreign.C.Types
|
||||
import Foreign.Marshal.Alloc ( alloca, allocaBytes )
|
||||
import Foreign.Ptr ( Ptr )
|
||||
import Foreign.StablePtr ( StablePtr, newStablePtr, freeStablePtr )
|
||||
import Foreign.Storable ( Storable(..) )
|
||||
import System.Exit
|
||||
import System.Posix.Process.Internals
|
||||
import System.Posix.Types
|
||||
import Control.Monad
|
||||
|
||||
import Control.Exception.Base ( bracket, getMaskingState, MaskingState(..) ) -- used by forkProcess
|
||||
import GHC.TopHandler ( runIO )
|
||||
import GHC.IO ( unsafeUnmask, uninterruptibleMask_ )
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Process environment
|
||||
|
||||
-- | 'getProcessID' calls @getpid@ to obtain the 'ProcessID' for
|
||||
-- the current process.
|
||||
getProcessID :: IO ProcessID
|
||||
getProcessID = c_getpid
|
||||
|
||||
foreign import ccall unsafe "getpid"
|
||||
c_getpid :: IO CPid
|
||||
|
||||
-- | 'getProcessID' calls @getppid@ to obtain the 'ProcessID' for
|
||||
-- the parent of the current process.
|
||||
getParentProcessID :: IO ProcessID
|
||||
getParentProcessID = c_getppid
|
||||
|
||||
foreign import ccall unsafe "getppid"
|
||||
c_getppid :: IO CPid
|
||||
|
||||
-- | 'getProcessGroupID' calls @getpgrp@ to obtain the
|
||||
-- 'ProcessGroupID' for the current process.
|
||||
getProcessGroupID :: IO ProcessGroupID
|
||||
getProcessGroupID = c_getpgrp
|
||||
|
||||
foreign import ccall unsafe "getpgrp"
|
||||
c_getpgrp :: IO CPid
|
||||
|
||||
-- | @'getProcessGroupIDOf' pid@ calls @getpgid@ to obtain the
|
||||
-- 'ProcessGroupID' for process @pid@.
|
||||
getProcessGroupIDOf :: ProcessID -> IO ProcessGroupID
|
||||
getProcessGroupIDOf pid =
|
||||
throwErrnoIfMinus1 "getProcessGroupIDOf" (c_getpgid pid)
|
||||
|
||||
foreign import ccall unsafe "getpgid"
|
||||
c_getpgid :: CPid -> IO CPid
|
||||
|
||||
{-
|
||||
To be added in the future, after the deprecation period for the
|
||||
existing createProcessGroup has elapsed:
|
||||
|
||||
-- | 'createProcessGroup' calls @setpgid(0,0)@ to make
|
||||
-- the current process a new process group leader.
|
||||
createProcessGroup :: IO ProcessGroupID
|
||||
createProcessGroup = do
|
||||
throwErrnoIfMinus1_ "createProcessGroup" (c_setpgid 0 0)
|
||||
pgid <- getProcessGroupID
|
||||
return pgid
|
||||
-}
|
||||
|
||||
-- | @'createProcessGroupFor' pid@ calls @setpgid@ to make
|
||||
-- process @pid@ a new process group leader.
|
||||
createProcessGroupFor :: ProcessID -> IO ProcessGroupID
|
||||
createProcessGroupFor pid = do
|
||||
throwErrnoIfMinus1_ "createProcessGroupFor" (c_setpgid pid 0)
|
||||
return pid
|
||||
|
||||
-- | @'joinProcessGroup' pgid@ calls @setpgid@ to set the
|
||||
-- 'ProcessGroupID' of the current process to @pgid@.
|
||||
joinProcessGroup :: ProcessGroupID -> IO ()
|
||||
joinProcessGroup pgid =
|
||||
throwErrnoIfMinus1_ "joinProcessGroup" (c_setpgid 0 pgid)
|
||||
|
||||
{-
|
||||
To be added in the future, after the deprecation period for the
|
||||
existing setProcessGroupID has elapsed:
|
||||
|
||||
-- | @'setProcessGroupID' pgid@ calls @setpgid@ to set the
|
||||
-- 'ProcessGroupID' of the current process to @pgid@.
|
||||
setProcessGroupID :: ProcessGroupID -> IO ()
|
||||
setProcessGroupID pgid =
|
||||
throwErrnoIfMinus1_ "setProcessGroupID" (c_setpgid 0 pgid)
|
||||
-}
|
||||
|
||||
-- | @'setProcessGroupIDOf' pid pgid@ calls @setpgid@ to set the
|
||||
-- 'ProcessGroupIDOf' for process @pid@ to @pgid@.
|
||||
setProcessGroupIDOf :: ProcessID -> ProcessGroupID -> IO ()
|
||||
setProcessGroupIDOf pid pgid =
|
||||
throwErrnoIfMinus1_ "setProcessGroupIDOf" (c_setpgid pid pgid)
|
||||
|
||||
foreign import ccall unsafe "setpgid"
|
||||
c_setpgid :: CPid -> CPid -> IO CInt
|
||||
|
||||
-- | 'createSession' calls @setsid@ to create a new session
|
||||
-- with the current process as session leader.
|
||||
createSession :: IO ProcessGroupID
|
||||
createSession = throwErrnoIfMinus1 "createSession" c_setsid
|
||||
|
||||
foreign import ccall unsafe "setsid"
|
||||
c_setsid :: IO CPid
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Process times
|
||||
|
||||
-- All times in clock ticks (see getClockTick)
|
||||
|
||||
data ProcessTimes
|
||||
= ProcessTimes { elapsedTime :: ClockTick
|
||||
, userTime :: ClockTick
|
||||
, systemTime :: ClockTick
|
||||
, childUserTime :: ClockTick
|
||||
, childSystemTime :: ClockTick
|
||||
}
|
||||
|
||||
-- | 'getProcessTimes' calls @times@ to obtain time-accounting
|
||||
-- information for the current process and its children.
|
||||
getProcessTimes :: IO ProcessTimes
|
||||
getProcessTimes = do
|
||||
allocaBytes (#const sizeof(struct tms)) $ \p_tms -> do
|
||||
elapsed <- throwErrnoIfMinus1 "getProcessTimes" (c_times p_tms)
|
||||
ut <- (#peek struct tms, tms_utime) p_tms
|
||||
st <- (#peek struct tms, tms_stime) p_tms
|
||||
cut <- (#peek struct tms, tms_cutime) p_tms
|
||||
cst <- (#peek struct tms, tms_cstime) p_tms
|
||||
return (ProcessTimes{ elapsedTime = elapsed,
|
||||
userTime = ut,
|
||||
systemTime = st,
|
||||
childUserTime = cut,
|
||||
childSystemTime = cst
|
||||
})
|
||||
|
||||
data {-# CTYPE "struct tms" #-} CTms
|
||||
|
||||
foreign import capi unsafe "HsUnix.h times"
|
||||
c_times :: Ptr CTms -> IO CClock
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Process scheduling priority
|
||||
|
||||
nice :: Int -> IO ()
|
||||
nice prio = do
|
||||
resetErrno
|
||||
res <- c_nice (fromIntegral prio)
|
||||
when (res == -1) $ do
|
||||
err <- getErrno
|
||||
when (err /= eOK) (throwErrno "nice")
|
||||
|
||||
foreign import ccall unsafe "nice"
|
||||
c_nice :: CInt -> IO CInt
|
||||
|
||||
getProcessPriority :: ProcessID -> IO Int
|
||||
getProcessGroupPriority :: ProcessGroupID -> IO Int
|
||||
getUserPriority :: UserID -> IO Int
|
||||
|
||||
getProcessPriority pid = do
|
||||
r <- throwErrnoIfMinus1 "getProcessPriority" $
|
||||
c_getpriority (#const PRIO_PROCESS) (fromIntegral pid)
|
||||
return (fromIntegral r)
|
||||
|
||||
getProcessGroupPriority pid = do
|
||||
r <- throwErrnoIfMinus1 "getProcessPriority" $
|
||||
c_getpriority (#const PRIO_PGRP) (fromIntegral pid)
|
||||
return (fromIntegral r)
|
||||
|
||||
getUserPriority uid = do
|
||||
r <- throwErrnoIfMinus1 "getUserPriority" $
|
||||
c_getpriority (#const PRIO_USER) (fromIntegral uid)
|
||||
return (fromIntegral r)
|
||||
|
||||
foreign import ccall unsafe "getpriority"
|
||||
c_getpriority :: CInt -> CInt -> IO CInt
|
||||
|
||||
setProcessPriority :: ProcessID -> Int -> IO ()
|
||||
setProcessGroupPriority :: ProcessGroupID -> Int -> IO ()
|
||||
setUserPriority :: UserID -> Int -> IO ()
|
||||
|
||||
setProcessPriority pid val =
|
||||
throwErrnoIfMinus1_ "setProcessPriority" $
|
||||
c_setpriority (#const PRIO_PROCESS) (fromIntegral pid) (fromIntegral val)
|
||||
|
||||
setProcessGroupPriority pid val =
|
||||
throwErrnoIfMinus1_ "setProcessPriority" $
|
||||
c_setpriority (#const PRIO_PGRP) (fromIntegral pid) (fromIntegral val)
|
||||
|
||||
setUserPriority uid val =
|
||||
throwErrnoIfMinus1_ "setUserPriority" $
|
||||
c_setpriority (#const PRIO_USER) (fromIntegral uid) (fromIntegral val)
|
||||
|
||||
foreign import ccall unsafe "setpriority"
|
||||
c_setpriority :: CInt -> CInt -> CInt -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Forking, execution
|
||||
|
||||
{- | 'forkProcess' corresponds to the POSIX @fork@ system call.
|
||||
The 'IO' action passed as an argument is executed in the child process; no other
|
||||
threads will be copied to the child process.
|
||||
On success, 'forkProcess' returns the child's 'ProcessID' to the parent process;
|
||||
in case of an error, an exception is thrown.
|
||||
|
||||
The exception masking state of the executed action is inherited
|
||||
(c.f. 'forkIO'), see also 'forkProcessWithUnmask' (/since: 2.7.0.0/).
|
||||
|
||||
'forkProcess' comes with a giant warning: since any other running
|
||||
threads are not copied into the child process, it's easy to go wrong:
|
||||
e.g. by accessing some shared resource that was held by another thread
|
||||
in the parent.
|
||||
-}
|
||||
|
||||
forkProcess :: IO () -> IO ProcessID
|
||||
forkProcess action = do
|
||||
-- wrap action to re-establish caller's masking state, as
|
||||
-- 'forkProcessPrim' starts in 'MaskedInterruptible' state by
|
||||
-- default; see also #1048
|
||||
mstate <- getMaskingState
|
||||
let action' = case mstate of
|
||||
Unmasked -> unsafeUnmask action
|
||||
MaskedInterruptible -> action
|
||||
MaskedUninterruptible -> uninterruptibleMask_ action
|
||||
|
||||
bracket
|
||||
(newStablePtr (runIO action'))
|
||||
freeStablePtr
|
||||
(\stable -> throwErrnoIfMinus1 "forkProcess" (forkProcessPrim stable))
|
||||
|
||||
foreign import ccall "forkProcess" forkProcessPrim :: StablePtr (IO ()) -> IO CPid
|
||||
|
||||
-- | Variant of 'forkProcess' in the style of 'forkIOWithUnmask'.
|
||||
--
|
||||
-- @since 2.7.0.0
|
||||
forkProcessWithUnmask :: ((forall a . IO a -> IO a) -> IO ()) -> IO ProcessID
|
||||
forkProcessWithUnmask action = forkProcess (action unsafeUnmask)
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Waiting for process termination
|
||||
|
||||
-- | @'getProcessStatus' blk stopped pid@ calls @waitpid@, returning
|
||||
-- @'Just' tc@, the 'ProcessStatus' for process @pid@ if it is
|
||||
-- available, 'Nothing' otherwise. If @blk@ is 'False', then
|
||||
-- @WNOHANG@ is set in the options for @waitpid@, otherwise not.
|
||||
-- If @stopped@ is 'True', then @WUNTRACED@ is set in the
|
||||
-- options for @waitpid@, otherwise not.
|
||||
getProcessStatus :: Bool -> Bool -> ProcessID -> IO (Maybe ProcessStatus)
|
||||
getProcessStatus block stopped pid =
|
||||
alloca $ \wstatp -> do
|
||||
pid' <- throwErrnoIfMinus1Retry "getProcessStatus"
|
||||
(c_waitpid pid wstatp (waitOptions block stopped))
|
||||
case pid' of
|
||||
0 -> return Nothing
|
||||
_ -> do ps <- readWaitStatus wstatp
|
||||
return (Just ps)
|
||||
|
||||
-- safe/interruptible, because this call might block
|
||||
foreign import ccall interruptible "waitpid"
|
||||
c_waitpid :: CPid -> Ptr CInt -> CInt -> IO CPid
|
||||
|
||||
-- | @'getGroupProcessStatus' blk stopped pgid@ calls @waitpid@,
|
||||
-- returning @'Just' (pid, tc)@, the 'ProcessID' and 'ProcessStatus'
|
||||
-- for any process in group @pgid@ if one is available, or 'Nothing'
|
||||
-- if there are child processes but none have exited. If there are
|
||||
-- no child processes, then 'getGroupProcessStatus' raises an
|
||||
-- 'isDoesNotExistError' exception.
|
||||
--
|
||||
-- If @blk@ is 'False', then @WNOHANG@ is set in the options for
|
||||
-- @waitpid@, otherwise not. If @stopped@ is 'True', then
|
||||
-- @WUNTRACED@ is set in the options for @waitpid@, otherwise not.
|
||||
getGroupProcessStatus :: Bool
|
||||
-> Bool
|
||||
-> ProcessGroupID
|
||||
-> IO (Maybe (ProcessID, ProcessStatus))
|
||||
getGroupProcessStatus block stopped pgid =
|
||||
alloca $ \wstatp -> do
|
||||
pid <- throwErrnoIfMinus1Retry "getGroupProcessStatus"
|
||||
(c_waitpid (-pgid) wstatp (waitOptions block stopped))
|
||||
case pid of
|
||||
0 -> return Nothing
|
||||
_ -> do ps <- readWaitStatus wstatp
|
||||
return (Just (pid, ps))
|
||||
|
||||
-- | @'getAnyProcessStatus' blk stopped@ calls @waitpid@, returning
|
||||
-- @'Just' (pid, tc)@, the 'ProcessID' and 'ProcessStatus' for any
|
||||
-- child process if a child process has exited, or 'Nothing' if
|
||||
-- there are child processes but none have exited. If there are no
|
||||
-- child processes, then 'getAnyProcessStatus' raises an
|
||||
-- 'isDoesNotExistError' exception.
|
||||
--
|
||||
-- If @blk@ is 'False', then @WNOHANG@ is set in the options for
|
||||
-- @waitpid@, otherwise not. If @stopped@ is 'True', then
|
||||
-- @WUNTRACED@ is set in the options for @waitpid@, otherwise not.
|
||||
getAnyProcessStatus :: Bool -> Bool -> IO (Maybe (ProcessID, ProcessStatus))
|
||||
getAnyProcessStatus block stopped = getGroupProcessStatus block stopped 1
|
||||
|
||||
waitOptions :: Bool -> Bool -> CInt
|
||||
-- block stopped
|
||||
waitOptions False False = (#const WNOHANG)
|
||||
waitOptions False True = (#const (WNOHANG|WUNTRACED))
|
||||
waitOptions True False = 0
|
||||
waitOptions True True = (#const WUNTRACED)
|
||||
|
||||
-- Turn a (ptr to a) wait status into a ProcessStatus
|
||||
|
||||
readWaitStatus :: Ptr CInt -> IO ProcessStatus
|
||||
readWaitStatus wstatp = do
|
||||
wstat <- peek wstatp
|
||||
decipherWaitStatus wstat
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Exiting
|
||||
|
||||
-- | @'exitImmediately' status@ calls @_exit@ to terminate the process
|
||||
-- with the indicated exit @status@.
|
||||
-- The operation never returns. Since it does not use the Haskell exception
|
||||
-- system and it cannot be caught.
|
||||
--
|
||||
-- Note: Prior to @unix-2.8.0.0@ the type-signature of 'exitImmediately' was
|
||||
-- @ExitCode -> IO ()@.
|
||||
--
|
||||
-- @since 2.8.0.0
|
||||
exitImmediately :: ExitCode -> IO a
|
||||
exitImmediately status = do
|
||||
_ <- c_exit (exitcode2Int status)
|
||||
-- The above will exit the program, but need the following to satisfy
|
||||
-- the type signature.
|
||||
exitImmediately status
|
||||
where
|
||||
exitcode2Int ExitSuccess = 0
|
||||
exitcode2Int (ExitFailure n) = fromIntegral n
|
||||
|
||||
foreign import ccall unsafe "exit"
|
||||
c_exit :: CInt -> IO ()
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Deprecated or subject to change
|
||||
|
||||
{-# DEPRECATED createProcessGroup "This function is scheduled to be replaced by something different in the future, we therefore recommend that you do not use this version and use 'createProcessGroupFor' instead." #-} -- deprecated in 7.2
|
||||
-- | @'createProcessGroup' pid@ calls @setpgid@ to make
|
||||
-- process @pid@ a new process group leader.
|
||||
-- This function is currently deprecated,
|
||||
-- and might be changed to making the current
|
||||
-- process a new process group leader in future versions.
|
||||
createProcessGroup :: ProcessID -> IO ProcessGroupID
|
||||
createProcessGroup pid = do
|
||||
throwErrnoIfMinus1_ "createProcessGroup" (c_setpgid pid 0)
|
||||
return pid
|
||||
|
||||
{-# DEPRECATED setProcessGroupID "This function is scheduled to be replaced by something different in the future, we therefore recommend that you do not use this version and use 'setProcessGroupIDOf' instead." #-} -- deprecated in 7.2
|
||||
-- | @'setProcessGroupID' pid pgid@ calls @setpgid@ to set the
|
||||
-- 'ProcessGroupID' for process @pid@ to @pgid@.
|
||||
-- This function is currently deprecated,
|
||||
-- and might be changed to setting the 'ProcessGroupID'
|
||||
-- for the current process in future versions.
|
||||
setProcessGroupID :: ProcessID -> ProcessGroupID -> IO ()
|
||||
setProcessGroupID pid pgid =
|
||||
throwErrnoIfMinus1_ "setProcessGroupID" (c_setpgid pid pgid)
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
@ -1,78 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
|
||||
module System.Posix.Process.Internals (
|
||||
pPrPr_disableITimers, c_execvpe,
|
||||
decipherWaitStatus, ProcessStatus(..) ) where
|
||||
|
||||
import Foreign
|
||||
import Foreign.C
|
||||
import System.Exit
|
||||
import System.IO.Error
|
||||
import GHC.Conc (Signal)
|
||||
|
||||
-- | The exit status of a process
|
||||
data ProcessStatus
|
||||
= Exited ExitCode -- ^ the process exited by calling
|
||||
-- @exit()@ or returning from @main@
|
||||
| Terminated Signal Bool -- ^ the process was terminated by a
|
||||
-- signal, the @Bool@ is @True@ if a core
|
||||
-- dump was produced
|
||||
--
|
||||
-- @since 2.7.0.0
|
||||
| Stopped Signal -- ^ the process was stopped by a signal
|
||||
deriving (Eq, Ord, Show)
|
||||
|
||||
-- this function disables the itimer, which would otherwise cause confusing
|
||||
-- signals to be sent to the new process.
|
||||
foreign import capi unsafe "Rts.h stopTimer"
|
||||
pPrPr_disableITimers :: IO ()
|
||||
|
||||
foreign import ccall unsafe "__hsunix_execvpe"
|
||||
c_execvpe :: CString -> Ptr CString -> Ptr CString -> IO CInt
|
||||
|
||||
decipherWaitStatus :: CInt -> IO ProcessStatus
|
||||
decipherWaitStatus wstat =
|
||||
if c_WIFEXITED wstat /= 0
|
||||
then do
|
||||
let exitstatus = c_WEXITSTATUS wstat
|
||||
if exitstatus == 0
|
||||
then return (Exited ExitSuccess)
|
||||
else return (Exited (ExitFailure (fromIntegral exitstatus)))
|
||||
else do
|
||||
if c_WIFSIGNALED wstat /= 0
|
||||
then do
|
||||
let termsig = c_WTERMSIG wstat
|
||||
let coredumped = c_WCOREDUMP wstat /= 0
|
||||
return (Terminated termsig coredumped)
|
||||
else do
|
||||
if c_WIFSTOPPED wstat /= 0
|
||||
then do
|
||||
let stopsig = c_WSTOPSIG wstat
|
||||
return (Stopped stopsig)
|
||||
else do
|
||||
ioError (mkIOError illegalOperationErrorType
|
||||
"waitStatus" Nothing Nothing)
|
||||
|
||||
|
||||
foreign import capi unsafe "HsUnix.h WIFEXITED"
|
||||
c_WIFEXITED :: CInt -> CInt
|
||||
|
||||
foreign import capi unsafe "HsUnix.h WEXITSTATUS"
|
||||
c_WEXITSTATUS :: CInt -> CInt
|
||||
|
||||
foreign import capi unsafe "HsUnix.h WIFSIGNALED"
|
||||
c_WIFSIGNALED :: CInt -> CInt
|
||||
|
||||
foreign import capi unsafe "HsUnix.h WTERMSIG"
|
||||
c_WTERMSIG :: CInt -> CInt
|
||||
|
||||
foreign import capi unsafe "HsUnix.h WIFSTOPPED"
|
||||
c_WIFSTOPPED :: CInt -> CInt
|
||||
|
||||
foreign import capi unsafe "HsUnix.h WSTOPSIG"
|
||||
c_WSTOPSIG :: CInt -> CInt
|
||||
|
||||
foreign import capi unsafe "HsUnix.h WCOREDUMP"
|
||||
c_WCOREDUMP :: CInt -> CInt
|
||||
|
@ -1,166 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Resource
|
||||
-- Copyright : (c) The University of Glasgow 2003
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX resource support
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.Resource (
|
||||
-- * Resource Limits
|
||||
ResourceLimit(..), ResourceLimits(..), Resource(..),
|
||||
getResourceLimit,
|
||||
setResourceLimit,
|
||||
) where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import System.Posix.Types
|
||||
import Foreign
|
||||
import Foreign.C
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Resource limits
|
||||
|
||||
data Resource
|
||||
= ResourceCoreFileSize
|
||||
| ResourceCPUTime
|
||||
| ResourceDataSize
|
||||
| ResourceFileSize
|
||||
| ResourceOpenFiles
|
||||
| ResourceStackSize
|
||||
#ifdef RLIMIT_AS
|
||||
| ResourceTotalMemory
|
||||
#endif
|
||||
deriving Eq
|
||||
|
||||
data ResourceLimits
|
||||
= ResourceLimits { softLimit, hardLimit :: ResourceLimit }
|
||||
deriving Eq
|
||||
|
||||
data ResourceLimit
|
||||
= ResourceLimitInfinity
|
||||
| ResourceLimitUnknown
|
||||
| ResourceLimit Integer
|
||||
deriving Eq
|
||||
|
||||
data {-# CTYPE "struct rlimit" #-} RLimit
|
||||
|
||||
foreign import capi unsafe "HsUnix.h getrlimit"
|
||||
c_getrlimit :: CInt -> Ptr RLimit -> IO CInt
|
||||
|
||||
foreign import capi unsafe "HsUnix.h setrlimit"
|
||||
c_setrlimit :: CInt -> Ptr RLimit -> IO CInt
|
||||
|
||||
getResourceLimit :: Resource -> IO ResourceLimits
|
||||
getResourceLimit res = do
|
||||
allocaBytes (#const sizeof(struct rlimit)) $ \p_rlimit -> do
|
||||
throwErrnoIfMinus1_ "getResourceLimit" $
|
||||
c_getrlimit (packResource res) p_rlimit
|
||||
soft <- (#peek struct rlimit, rlim_cur) p_rlimit
|
||||
hard <- (#peek struct rlimit, rlim_max) p_rlimit
|
||||
return (ResourceLimits {
|
||||
softLimit = unpackRLimit soft,
|
||||
hardLimit = unpackRLimit hard
|
||||
})
|
||||
|
||||
setResourceLimit :: Resource -> ResourceLimits -> IO ()
|
||||
setResourceLimit res ResourceLimits{softLimit=soft,hardLimit=hard} = do
|
||||
allocaBytes (#const sizeof(struct rlimit)) $ \p_rlimit -> do
|
||||
(#poke struct rlimit, rlim_cur) p_rlimit (packRLimit soft True)
|
||||
(#poke struct rlimit, rlim_max) p_rlimit (packRLimit hard False)
|
||||
throwErrnoIfMinus1_ "setResourceLimit" $
|
||||
c_setrlimit (packResource res) p_rlimit
|
||||
return ()
|
||||
|
||||
packResource :: Resource -> CInt
|
||||
packResource ResourceCoreFileSize = (#const RLIMIT_CORE)
|
||||
packResource ResourceCPUTime = (#const RLIMIT_CPU)
|
||||
packResource ResourceDataSize = (#const RLIMIT_DATA)
|
||||
packResource ResourceFileSize = (#const RLIMIT_FSIZE)
|
||||
packResource ResourceOpenFiles = (#const RLIMIT_NOFILE)
|
||||
packResource ResourceStackSize = (#const RLIMIT_STACK)
|
||||
#ifdef RLIMIT_AS
|
||||
packResource ResourceTotalMemory = (#const RLIMIT_AS)
|
||||
#endif
|
||||
|
||||
unpackRLimit :: CRLim -> ResourceLimit
|
||||
unpackRLimit (#const RLIM_INFINITY) = ResourceLimitInfinity
|
||||
unpackRLimit other
|
||||
#if defined(RLIM_SAVED_MAX)
|
||||
| ((#const RLIM_SAVED_MAX) :: CRLim) /= (#const RLIM_INFINITY) &&
|
||||
other == (#const RLIM_SAVED_MAX) = ResourceLimitUnknown
|
||||
#endif
|
||||
#if defined(RLIM_SAVED_CUR)
|
||||
| ((#const RLIM_SAVED_CUR) :: CRLim) /= (#const RLIM_INFINITY) &&
|
||||
other == (#const RLIM_SAVED_CUR) = ResourceLimitUnknown
|
||||
#endif
|
||||
| otherwise = ResourceLimit (fromIntegral other)
|
||||
|
||||
packRLimit :: ResourceLimit -> Bool -> CRLim
|
||||
packRLimit ResourceLimitInfinity _ = (#const RLIM_INFINITY)
|
||||
#if defined(RLIM_SAVED_CUR)
|
||||
packRLimit ResourceLimitUnknown True = (#const RLIM_SAVED_CUR)
|
||||
#endif
|
||||
#if defined(RLIM_SAVED_MAX)
|
||||
packRLimit ResourceLimitUnknown False = (#const RLIM_SAVED_MAX)
|
||||
#endif
|
||||
#if ! defined(RLIM_SAVED_MAX) && !defined(RLIM_SAVED_CUR)
|
||||
packRLimit ResourceLimitUnknown _ =
|
||||
error
|
||||
$ "System.Posix.Resource.packRLimit: " ++
|
||||
"ResourceLimitUnknown but RLIM_SAVED_MAX/RLIM_SAVED_CUR not defined by platform"
|
||||
#endif
|
||||
packRLimit (ResourceLimit other) _ = fromIntegral other
|
||||
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Test code
|
||||
|
||||
{-
|
||||
import System.Posix
|
||||
import Control.Monad
|
||||
|
||||
main = do
|
||||
zipWithM_ (\r n -> setResourceLimit r ResourceLimits{
|
||||
hardLimit = ResourceLimit n,
|
||||
softLimit = ResourceLimit n })
|
||||
allResources [1..]
|
||||
showAll
|
||||
mapM_ (\r -> setResourceLimit r ResourceLimits{
|
||||
hardLimit = ResourceLimit 1,
|
||||
softLimit = ResourceLimitInfinity })
|
||||
allResources
|
||||
-- should fail
|
||||
|
||||
|
||||
showAll =
|
||||
mapM_ (\r -> getResourceLimit r >>= (putStrLn . showRLims)) allResources
|
||||
|
||||
allResources =
|
||||
[ResourceCoreFileSize, ResourceCPUTime, ResourceDataSize,
|
||||
ResourceFileSize, ResourceOpenFiles, ResourceStackSize
|
||||
#ifdef RLIMIT_AS
|
||||
, ResourceTotalMemory
|
||||
#endif
|
||||
]
|
||||
|
||||
showRLims ResourceLimits{hardLimit=h,softLimit=s}
|
||||
= "hard: " ++ showRLim h ++ ", soft: " ++ showRLim s
|
||||
|
||||
showRLim ResourceLimitInfinity = "infinity"
|
||||
showRLim ResourceLimitUnknown = "unknown"
|
||||
showRLim (ResourceLimit other) = show other
|
||||
-}
|
@ -1,131 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Semaphore
|
||||
-- Copyright : (c) Daniel Franke 2007
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : experimental
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX named semaphore support.
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.Semaphore
|
||||
(OpenSemFlags(..), Semaphore(),
|
||||
semOpen, semUnlink, semWait, semTryWait, semThreadWait,
|
||||
semPost, semGetValue)
|
||||
where
|
||||
|
||||
#include <semaphore.h>
|
||||
#include <fcntl.h>
|
||||
|
||||
import Foreign.C
|
||||
import Foreign.ForeignPtr hiding (newForeignPtr)
|
||||
import Foreign.Concurrent
|
||||
import Foreign.Marshal
|
||||
import Foreign.Ptr
|
||||
import Foreign.Storable
|
||||
import System.Posix.Types
|
||||
import Control.Concurrent
|
||||
import Data.Bits
|
||||
|
||||
data OpenSemFlags = OpenSemFlags { semCreate :: Bool,
|
||||
-- ^ If true, create the semaphore if it
|
||||
-- does not yet exist.
|
||||
semExclusive :: Bool
|
||||
-- ^ If true, throw an exception if the
|
||||
-- semaphore already exists.
|
||||
}
|
||||
|
||||
newtype Semaphore = Semaphore (ForeignPtr ())
|
||||
|
||||
-- | Open a named semaphore with the given name, flags, mode, and initial
|
||||
-- value.
|
||||
semOpen :: String -> OpenSemFlags -> FileMode -> Int -> IO Semaphore
|
||||
semOpen name flags mode value =
|
||||
let cflags = (if semCreate flags then #{const O_CREAT} else 0) .|.
|
||||
(if semExclusive flags then #{const O_EXCL} else 0)
|
||||
semOpen' cname =
|
||||
do sem <- throwErrnoPathIfNull "semOpen" name $
|
||||
sem_open cname (toEnum cflags) mode (toEnum value)
|
||||
fptr <- newForeignPtr sem (finalize sem)
|
||||
return $ Semaphore fptr
|
||||
finalize sem = throwErrnoPathIfMinus1_ "semOpen" name $
|
||||
sem_close sem in
|
||||
withCAString name semOpen'
|
||||
|
||||
-- | Delete the semaphore with the given name.
|
||||
semUnlink :: String -> IO ()
|
||||
semUnlink name = withCAString name semUnlink'
|
||||
where semUnlink' cname = throwErrnoPathIfMinus1_ "semUnlink" name $
|
||||
sem_unlink cname
|
||||
|
||||
-- | Lock the semaphore, blocking until it becomes available. Since this
|
||||
-- is done through a system call, this will block the *entire runtime*,
|
||||
-- not just the current thread. If this is not the behaviour you want,
|
||||
-- use semThreadWait instead.
|
||||
semWait :: Semaphore -> IO ()
|
||||
semWait (Semaphore fptr) = withForeignPtr fptr semWait'
|
||||
where semWait' sem = throwErrnoIfMinus1Retry_ "semWait" $
|
||||
sem_wait sem
|
||||
|
||||
-- | Attempt to lock the semaphore without blocking. Immediately return
|
||||
-- False if it is not available.
|
||||
semTryWait :: Semaphore -> IO Bool
|
||||
semTryWait (Semaphore fptr) = withForeignPtr fptr semTrywait'
|
||||
where semTrywait' sem = do res <- sem_trywait sem
|
||||
(if res == 0 then return True
|
||||
else do errno <- getErrno
|
||||
(if errno == eINTR
|
||||
then semTrywait' sem
|
||||
else if errno == eAGAIN
|
||||
then return False
|
||||
else throwErrno "semTrywait"))
|
||||
|
||||
-- | Poll the semaphore until it is available, then lock it. Unlike
|
||||
-- semWait, this will block only the current thread rather than the
|
||||
-- entire process.
|
||||
semThreadWait :: Semaphore -> IO ()
|
||||
semThreadWait sem = do res <- semTryWait sem
|
||||
(if res then return ()
|
||||
else ( do { yield; semThreadWait sem } ))
|
||||
|
||||
-- | Unlock the semaphore.
|
||||
semPost :: Semaphore -> IO ()
|
||||
semPost (Semaphore fptr) = withForeignPtr fptr semPost'
|
||||
where semPost' sem = throwErrnoIfMinus1Retry_ "semPost" $
|
||||
sem_post sem
|
||||
|
||||
-- | Return the semaphore's current value.
|
||||
semGetValue :: Semaphore -> IO Int
|
||||
semGetValue (Semaphore fptr) = withForeignPtr fptr semGetValue'
|
||||
where semGetValue' sem = alloca (semGetValue_ sem)
|
||||
|
||||
semGetValue_ :: Ptr () -> Ptr CInt -> IO Int
|
||||
semGetValue_ sem ptr = do throwErrnoIfMinus1Retry_ "semGetValue" $
|
||||
sem_getvalue sem ptr
|
||||
cint <- peek ptr
|
||||
return $ fromEnum cint
|
||||
|
||||
foreign import ccall safe "sem_open"
|
||||
sem_open :: CString -> CInt -> CMode -> CUInt -> IO (Ptr ())
|
||||
foreign import ccall safe "sem_close"
|
||||
sem_close :: Ptr () -> IO CInt
|
||||
foreign import ccall safe "sem_unlink"
|
||||
sem_unlink :: CString -> IO CInt
|
||||
|
||||
foreign import ccall safe "sem_wait"
|
||||
sem_wait :: Ptr () -> IO CInt
|
||||
foreign import ccall safe "sem_trywait"
|
||||
sem_trywait :: Ptr () -> IO CInt
|
||||
foreign import ccall safe "sem_post"
|
||||
sem_post :: Ptr () -> IO CInt
|
||||
foreign import ccall safe "sem_getvalue"
|
||||
sem_getvalue :: Ptr () -> Ptr CInt -> IO Int
|
@ -1,91 +0,0 @@
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.SharedMem
|
||||
-- Copyright : (c) Daniel Franke 2007
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : experimental
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX shared memory support.
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.SharedMem
|
||||
(ShmOpenFlags(..), shmOpen, shmUnlink)
|
||||
where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/mman.h>
|
||||
#include <fcntl.h>
|
||||
|
||||
import System.Posix.Types
|
||||
#if defined(HAVE_SHM_OPEN) || defined(HAVE_SHM_UNLINK)
|
||||
import Foreign.C
|
||||
#endif
|
||||
#ifdef HAVE_SHM_OPEN
|
||||
import Data.Bits
|
||||
#endif
|
||||
|
||||
data ShmOpenFlags = ShmOpenFlags
|
||||
{ shmReadWrite :: Bool,
|
||||
-- ^ If true, open the shm object read-write rather than read-only.
|
||||
shmCreate :: Bool,
|
||||
-- ^ If true, create the shm object if it does not exist.
|
||||
shmExclusive :: Bool,
|
||||
-- ^ If true, throw an exception if the shm object already exists.
|
||||
shmTrunc :: Bool
|
||||
-- ^ If true, wipe the contents of the shm object after opening it.
|
||||
}
|
||||
|
||||
-- | Open a shared memory object with the given name, flags, and mode.
|
||||
shmOpen :: String -> ShmOpenFlags -> FileMode -> IO Fd
|
||||
#ifdef HAVE_SHM_OPEN
|
||||
shmOpen name flags mode =
|
||||
do cflags0 <- return 0
|
||||
cflags1 <- return $ cflags0 .|. (if shmReadWrite flags
|
||||
then #{const O_RDWR}
|
||||
else #{const O_RDONLY})
|
||||
cflags2 <- return $ cflags1 .|. (if shmCreate flags then #{const O_CREAT}
|
||||
else 0)
|
||||
cflags3 <- return $ cflags2 .|. (if shmExclusive flags
|
||||
then #{const O_EXCL}
|
||||
else 0)
|
||||
cflags4 <- return $ cflags3 .|. (if shmTrunc flags then #{const O_TRUNC}
|
||||
else 0)
|
||||
withCAString name (shmOpen' cflags4)
|
||||
where shmOpen' cflags cname =
|
||||
do fd <- throwErrnoIfMinus1 "shmOpen" $
|
||||
shm_open cname cflags mode
|
||||
return $ Fd fd
|
||||
#else
|
||||
shmOpen = error "System.Posix.SharedMem:shm_open: not available"
|
||||
#endif
|
||||
|
||||
-- | Delete the shared memory object with the given name.
|
||||
shmUnlink :: String -> IO ()
|
||||
#ifdef HAVE_SHM_UNLINK
|
||||
shmUnlink name = withCAString name shmUnlink'
|
||||
where shmUnlink' cname =
|
||||
throwErrnoIfMinus1_ "shmUnlink" $ shm_unlink cname
|
||||
#else
|
||||
shmUnlink = error "System.Posix.SharedMem:shm_unlink: not available"
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_SHM_OPEN
|
||||
foreign import ccall unsafe "shm_open"
|
||||
shm_open :: CString -> CInt -> CMode -> IO CInt
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_SHM_UNLINK
|
||||
foreign import ccall unsafe "shm_unlink"
|
||||
shm_unlink :: CString -> IO CInt
|
||||
#endif
|
@ -1,706 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI, CPP, DeriveDataTypeable, NondecreasingIndentation #-}
|
||||
{-# OPTIONS_GHC -fno-cse #-} -- global variables
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Signals
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX signal support
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
#include "HsUnixConfig.h"
|
||||
##include "HsUnixConfig.h"
|
||||
|
||||
#ifdef HAVE_SIGNAL_H
|
||||
#include <signal.h>
|
||||
#endif
|
||||
|
||||
module System.Posix.Signals (
|
||||
-- * The Signal type
|
||||
Signal,
|
||||
|
||||
-- * Specific signals
|
||||
nullSignal,
|
||||
internalAbort, sigABRT,
|
||||
realTimeAlarm, sigALRM,
|
||||
busError, sigBUS,
|
||||
processStatusChanged, sigCHLD,
|
||||
continueProcess, sigCONT,
|
||||
floatingPointException, sigFPE,
|
||||
lostConnection, sigHUP,
|
||||
illegalInstruction, sigILL,
|
||||
keyboardSignal, sigINT,
|
||||
killProcess, sigKILL,
|
||||
openEndedPipe, sigPIPE,
|
||||
keyboardTermination, sigQUIT,
|
||||
segmentationViolation, sigSEGV,
|
||||
softwareStop, sigSTOP,
|
||||
softwareTermination, sigTERM,
|
||||
keyboardStop, sigTSTP,
|
||||
backgroundRead, sigTTIN,
|
||||
backgroundWrite, sigTTOU,
|
||||
userDefinedSignal1, sigUSR1,
|
||||
userDefinedSignal2, sigUSR2,
|
||||
#if CONST_SIGPOLL != -1
|
||||
pollableEvent, sigPOLL,
|
||||
#endif
|
||||
profilingTimerExpired, sigPROF,
|
||||
badSystemCall, sigSYS,
|
||||
breakpointTrap, sigTRAP,
|
||||
urgentDataAvailable, sigURG,
|
||||
virtualTimerExpired, sigVTALRM,
|
||||
cpuTimeLimitExceeded, sigXCPU,
|
||||
fileSizeLimitExceeded, sigXFSZ,
|
||||
|
||||
-- * Sending signals
|
||||
raiseSignal,
|
||||
signalProcess,
|
||||
signalProcessGroup,
|
||||
|
||||
-- * Handling signals
|
||||
Handler(Default,Ignore,Catch,CatchOnce,CatchInfo,CatchInfoOnce),
|
||||
SignalInfo(..), SignalSpecificInfo(..),
|
||||
installHandler,
|
||||
|
||||
-- * Signal sets
|
||||
SignalSet,
|
||||
emptySignalSet, fullSignalSet, reservedSignals,
|
||||
addSignal, deleteSignal, inSignalSet,
|
||||
|
||||
-- * The process signal mask
|
||||
getSignalMask, setSignalMask, blockSignals, unblockSignals,
|
||||
|
||||
-- * The alarm timer
|
||||
scheduleAlarm,
|
||||
|
||||
-- * Waiting for signals
|
||||
getPendingSignals,
|
||||
awaitSignal,
|
||||
|
||||
-- * The @NOCLDSTOP@ flag
|
||||
setStoppedChildFlag, queryStoppedChildFlag,
|
||||
|
||||
-- MISSING FUNCTIONALITY:
|
||||
-- sigaction(), (inc. the sigaction structure + flags etc.)
|
||||
-- the siginfo structure
|
||||
-- sigaltstack()
|
||||
-- sighold, sigignore, sigpause, sigrelse, sigset
|
||||
-- siginterrupt
|
||||
) where
|
||||
|
||||
import Data.Word
|
||||
import Foreign.C
|
||||
import Foreign.ForeignPtr
|
||||
import Foreign.Marshal
|
||||
import Foreign.Ptr
|
||||
import Foreign.Storable
|
||||
import System.IO.Unsafe (unsafePerformIO)
|
||||
import System.Posix.Types
|
||||
import System.Posix.Internals
|
||||
import System.Posix.Process
|
||||
import System.Posix.Process.Internals
|
||||
import Data.Dynamic
|
||||
|
||||
##include "rts/Signals.h"
|
||||
|
||||
import GHC.Conc hiding (Signal)
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Specific signals
|
||||
|
||||
nullSignal :: Signal
|
||||
nullSignal = 0
|
||||
|
||||
-- | Process abort signal.
|
||||
sigABRT :: CInt
|
||||
sigABRT = CONST_SIGABRT
|
||||
|
||||
-- | Alarm clock.
|
||||
sigALRM :: CInt
|
||||
sigALRM = CONST_SIGALRM
|
||||
|
||||
-- | Access to an undefined portion of a memory object.
|
||||
sigBUS :: CInt
|
||||
sigBUS = CONST_SIGBUS
|
||||
|
||||
-- | Child process terminated, stopped, or continued.
|
||||
sigCHLD :: CInt
|
||||
sigCHLD = CONST_SIGCHLD
|
||||
|
||||
-- | Continue executing, if stopped.
|
||||
sigCONT :: CInt
|
||||
sigCONT = CONST_SIGCONT
|
||||
|
||||
-- | Erroneous arithmetic operation.
|
||||
sigFPE :: CInt
|
||||
sigFPE = CONST_SIGFPE
|
||||
|
||||
-- | Hangup.
|
||||
sigHUP :: CInt
|
||||
sigHUP = CONST_SIGHUP
|
||||
|
||||
-- | Illegal instruction.
|
||||
sigILL :: CInt
|
||||
sigILL = CONST_SIGILL
|
||||
|
||||
-- | Terminal interrupt signal.
|
||||
sigINT :: CInt
|
||||
sigINT = CONST_SIGINT
|
||||
|
||||
-- | Kill (cannot be caught or ignored).
|
||||
sigKILL :: CInt
|
||||
sigKILL = CONST_SIGKILL
|
||||
|
||||
-- | Write on a pipe with no one to read it.
|
||||
sigPIPE :: CInt
|
||||
sigPIPE = CONST_SIGPIPE
|
||||
|
||||
-- | Terminal quit signal.
|
||||
sigQUIT :: CInt
|
||||
sigQUIT = CONST_SIGQUIT
|
||||
|
||||
-- | Invalid memory reference.
|
||||
sigSEGV :: CInt
|
||||
sigSEGV = CONST_SIGSEGV
|
||||
|
||||
-- | Stop executing (cannot be caught or ignored).
|
||||
sigSTOP :: CInt
|
||||
sigSTOP = CONST_SIGSTOP
|
||||
|
||||
-- | Termination signal.
|
||||
sigTERM :: CInt
|
||||
sigTERM = CONST_SIGTERM
|
||||
|
||||
-- | Terminal stop signal.
|
||||
sigTSTP :: CInt
|
||||
sigTSTP = CONST_SIGTSTP
|
||||
|
||||
-- | Background process attempting read.
|
||||
sigTTIN :: CInt
|
||||
sigTTIN = CONST_SIGTTIN
|
||||
|
||||
-- | Background process attempting write.
|
||||
sigTTOU :: CInt
|
||||
sigTTOU = CONST_SIGTTOU
|
||||
|
||||
-- | User-defined signal 1.
|
||||
sigUSR1 :: CInt
|
||||
sigUSR1 = CONST_SIGUSR1
|
||||
|
||||
-- | User-defined signal 2.
|
||||
sigUSR2 :: CInt
|
||||
sigUSR2 = CONST_SIGUSR2
|
||||
|
||||
#if CONST_SIGPOLL != -1
|
||||
-- | Pollable event.
|
||||
sigPOLL :: CInt
|
||||
sigPOLL = CONST_SIGPOLL
|
||||
#endif
|
||||
|
||||
-- | Profiling timer expired.
|
||||
sigPROF :: CInt
|
||||
sigPROF = CONST_SIGPROF
|
||||
|
||||
-- | Bad system call.
|
||||
sigSYS :: CInt
|
||||
sigSYS = CONST_SIGSYS
|
||||
|
||||
-- | Trace/breakpoint trap.
|
||||
sigTRAP :: CInt
|
||||
sigTRAP = CONST_SIGTRAP
|
||||
|
||||
-- | High bandwidth data is available at a socket.
|
||||
sigURG :: CInt
|
||||
sigURG = CONST_SIGURG
|
||||
|
||||
-- | Virtual timer expired.
|
||||
sigVTALRM :: CInt
|
||||
sigVTALRM = CONST_SIGVTALRM
|
||||
|
||||
-- | CPU time limit exceeded.
|
||||
sigXCPU :: CInt
|
||||
sigXCPU = CONST_SIGXCPU
|
||||
|
||||
-- | File size limit exceeded.
|
||||
sigXFSZ :: CInt
|
||||
sigXFSZ = CONST_SIGXFSZ
|
||||
|
||||
-- | Alias for 'sigABRT'.
|
||||
internalAbort ::Signal
|
||||
internalAbort = sigABRT
|
||||
|
||||
-- | Alias for 'sigALRM'.
|
||||
realTimeAlarm :: Signal
|
||||
realTimeAlarm = sigALRM
|
||||
|
||||
-- | Alias for 'sigBUS'.
|
||||
busError :: Signal
|
||||
busError = sigBUS
|
||||
|
||||
-- | Alias for 'sigCHLD'.
|
||||
processStatusChanged :: Signal
|
||||
processStatusChanged = sigCHLD
|
||||
|
||||
-- | Alias for 'sigCONT'.
|
||||
continueProcess :: Signal
|
||||
continueProcess = sigCONT
|
||||
|
||||
-- | Alias for 'sigFPE'.
|
||||
floatingPointException :: Signal
|
||||
floatingPointException = sigFPE
|
||||
|
||||
-- | Alias for 'sigHUP'.
|
||||
lostConnection :: Signal
|
||||
lostConnection = sigHUP
|
||||
|
||||
-- | Alias for 'sigILL'.
|
||||
illegalInstruction :: Signal
|
||||
illegalInstruction = sigILL
|
||||
|
||||
-- | Alias for 'sigINT'.
|
||||
keyboardSignal :: Signal
|
||||
keyboardSignal = sigINT
|
||||
|
||||
-- | Alias for 'sigKILL'.
|
||||
killProcess :: Signal
|
||||
killProcess = sigKILL
|
||||
|
||||
-- | Alias for 'sigPIPE'.
|
||||
openEndedPipe :: Signal
|
||||
openEndedPipe = sigPIPE
|
||||
|
||||
-- | Alias for 'sigQUIT'.
|
||||
keyboardTermination :: Signal
|
||||
keyboardTermination = sigQUIT
|
||||
|
||||
-- | Alias for 'sigSEGV'.
|
||||
segmentationViolation :: Signal
|
||||
segmentationViolation = sigSEGV
|
||||
|
||||
-- | Alias for 'sigSTOP'.
|
||||
softwareStop :: Signal
|
||||
softwareStop = sigSTOP
|
||||
|
||||
-- | Alias for 'sigTERM'.
|
||||
softwareTermination :: Signal
|
||||
softwareTermination = sigTERM
|
||||
|
||||
-- | Alias for 'sigTSTP'.
|
||||
keyboardStop :: Signal
|
||||
keyboardStop = sigTSTP
|
||||
|
||||
-- | Alias for 'sigTTIN'.
|
||||
backgroundRead :: Signal
|
||||
backgroundRead = sigTTIN
|
||||
|
||||
-- | Alias for 'sigTTOU'.
|
||||
backgroundWrite :: Signal
|
||||
backgroundWrite = sigTTOU
|
||||
|
||||
-- | Alias for 'sigUSR1'.
|
||||
userDefinedSignal1 :: Signal
|
||||
userDefinedSignal1 = sigUSR1
|
||||
|
||||
-- | Alias for 'sigUSR2'.
|
||||
userDefinedSignal2 :: Signal
|
||||
userDefinedSignal2 = sigUSR2
|
||||
|
||||
#if CONST_SIGPOLL != -1
|
||||
-- | Alias for 'sigPOLL'.
|
||||
pollableEvent :: Signal
|
||||
pollableEvent = sigPOLL
|
||||
#endif
|
||||
|
||||
-- | Alias for 'sigPROF'.
|
||||
profilingTimerExpired :: Signal
|
||||
profilingTimerExpired = sigPROF
|
||||
|
||||
-- | Alias for 'sigSYS'.
|
||||
badSystemCall :: Signal
|
||||
badSystemCall = sigSYS
|
||||
|
||||
-- | Alias for 'sigTRAP'.
|
||||
breakpointTrap :: Signal
|
||||
breakpointTrap = sigTRAP
|
||||
|
||||
-- | Alias for 'sigURG'.
|
||||
urgentDataAvailable :: Signal
|
||||
urgentDataAvailable = sigURG
|
||||
|
||||
-- | Alias for 'sigVTALRM'.
|
||||
virtualTimerExpired :: Signal
|
||||
virtualTimerExpired = sigVTALRM
|
||||
|
||||
-- | Alias for 'sigXCPU'.
|
||||
cpuTimeLimitExceeded :: Signal
|
||||
cpuTimeLimitExceeded = sigXCPU
|
||||
|
||||
-- | Alias for 'sigXFSZ'.
|
||||
fileSizeLimitExceeded :: Signal
|
||||
fileSizeLimitExceeded = sigXFSZ
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Signal-related functions
|
||||
|
||||
-- | @signalProcess int pid@ calls @kill@ to signal process @pid@
|
||||
-- with interrupt signal @int@.
|
||||
signalProcess :: Signal -> ProcessID -> IO ()
|
||||
signalProcess sig pid
|
||||
= throwErrnoIfMinus1_ "signalProcess" (c_kill pid sig)
|
||||
|
||||
foreign import ccall unsafe "kill"
|
||||
c_kill :: CPid -> CInt -> IO CInt
|
||||
|
||||
|
||||
-- | @signalProcessGroup int pgid@ calls @kill@ to signal
|
||||
-- all processes in group @pgid@ with interrupt signal @int@.
|
||||
signalProcessGroup :: Signal -> ProcessGroupID -> IO ()
|
||||
signalProcessGroup sig pgid
|
||||
= throwErrnoIfMinus1_ "signalProcessGroup" (c_killpg pgid sig)
|
||||
|
||||
foreign import ccall unsafe "killpg"
|
||||
c_killpg :: CPid -> CInt -> IO CInt
|
||||
|
||||
-- | @raiseSignal int@ calls @kill@ to signal the current process
|
||||
-- with interrupt signal @int@.
|
||||
raiseSignal :: Signal -> IO ()
|
||||
raiseSignal sig = throwErrnoIfMinus1_ "raiseSignal" (c_raise sig)
|
||||
|
||||
-- See also note in GHC's rts/RtsUtils.c
|
||||
-- This is somewhat fragile because we need to keep the
|
||||
-- `#if`-conditional in sync with GHC's runtime.
|
||||
#if (defined(openbsd_HOST_OS) || defined(freebsd_HOST_OS) || defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS) || defined(darwin_HOST_OS))
|
||||
foreign import ccall unsafe "genericRaise"
|
||||
c_raise :: CInt -> IO CInt
|
||||
#else
|
||||
foreign import ccall unsafe "raise"
|
||||
c_raise :: CInt -> IO CInt
|
||||
#endif
|
||||
|
||||
|
||||
type Signal = CInt
|
||||
|
||||
-- | The actions to perform when a signal is received.
|
||||
data Handler = Default
|
||||
| Ignore
|
||||
-- not yet: | Hold
|
||||
| Catch (IO ())
|
||||
| CatchOnce (IO ())
|
||||
| CatchInfo (SignalInfo -> IO ()) -- ^ @since 2.7.0.0
|
||||
| CatchInfoOnce (SignalInfo -> IO ()) -- ^ @since 2.7.0.0
|
||||
deriving (Typeable)
|
||||
|
||||
-- | Information about a received signal (derived from @siginfo_t@).
|
||||
--
|
||||
-- @since 2.7.0.0
|
||||
data SignalInfo = SignalInfo {
|
||||
siginfoSignal :: Signal,
|
||||
siginfoError :: Errno,
|
||||
siginfoSpecific :: SignalSpecificInfo
|
||||
}
|
||||
|
||||
-- | Information specific to a particular type of signal
|
||||
-- (derived from @siginfo_t@).
|
||||
--
|
||||
-- @since 2.7.0.0
|
||||
data SignalSpecificInfo
|
||||
= NoSignalSpecificInfo
|
||||
| SigChldInfo {
|
||||
siginfoPid :: ProcessID,
|
||||
siginfoUid :: UserID,
|
||||
siginfoStatus :: ProcessStatus
|
||||
}
|
||||
|
||||
-- | @installHandler int handler iset@ calls @sigaction@ to install an
|
||||
-- interrupt handler for signal @int@. If @handler@ is @Default@,
|
||||
-- @SIG_DFL@ is installed; if @handler@ is @Ignore@, @SIG_IGN@ is
|
||||
-- installed; if @handler@ is @Catch action@, a handler is installed
|
||||
-- which will invoke @action@ in a new thread when (or shortly after) the
|
||||
-- signal is received.
|
||||
-- If @iset@ is @Just s@, then the @sa_mask@ of the @sigaction@ structure
|
||||
-- is set to @s@; otherwise it is cleared. The previously installed
|
||||
-- signal handler for @int@ is returned
|
||||
installHandler :: Signal
|
||||
-> Handler
|
||||
-> Maybe SignalSet -- ^ other signals to block
|
||||
-> IO Handler -- ^ old handler
|
||||
|
||||
#ifdef __PARALLEL_HASKELL__
|
||||
installHandler =
|
||||
error "installHandler: not available for Parallel Haskell"
|
||||
#else
|
||||
|
||||
installHandler sig handler _maybe_mask = do
|
||||
ensureIOManagerIsRunning -- for the threaded RTS
|
||||
|
||||
-- if we're setting the action to DFL or IGN, we should do that *first*
|
||||
-- if we're setting a handler,
|
||||
-- if the previous action was handle, then setHandler is ok
|
||||
-- if the previous action was IGN/DFL, then setHandler followed by sig_install
|
||||
(old_action, old_handler) <-
|
||||
case handler of
|
||||
Ignore -> do
|
||||
old_action <- stg_sig_install sig STG_SIG_IGN nullPtr
|
||||
old_handler <- setHandler sig Nothing
|
||||
return (old_action, old_handler)
|
||||
|
||||
Default -> do
|
||||
old_action <- stg_sig_install sig STG_SIG_DFL nullPtr
|
||||
old_handler <- setHandler sig Nothing
|
||||
return (old_action, old_handler)
|
||||
|
||||
_some_kind_of_catch -> do
|
||||
-- I don't think it's possible to get CatchOnce right. If
|
||||
-- there's a signal in flight, then we might run the handler
|
||||
-- more than once.
|
||||
let dyn = toDyn handler
|
||||
old_handler <- case handler of
|
||||
Catch action -> setHandler sig (Just (const action,dyn))
|
||||
CatchOnce action -> setHandler sig (Just (const action,dyn))
|
||||
CatchInfo action -> setHandler sig (Just (getinfo action,dyn))
|
||||
CatchInfoOnce action -> setHandler sig (Just (getinfo action,dyn))
|
||||
#if __GLASGOW_HASKELL__ < 811
|
||||
_ -> error "installHandler"
|
||||
#endif
|
||||
|
||||
let action = case handler of
|
||||
Catch _ -> STG_SIG_HAN
|
||||
CatchOnce _ -> STG_SIG_RST
|
||||
CatchInfo _ -> STG_SIG_HAN
|
||||
CatchInfoOnce _ -> STG_SIG_RST
|
||||
#if __GLASGOW_HASKELL__ < 811
|
||||
_ -> error "installHandler"
|
||||
#endif
|
||||
|
||||
old_action <- stg_sig_install sig action nullPtr
|
||||
-- mask is pointless, so leave it NULL
|
||||
|
||||
return (old_action, old_handler)
|
||||
|
||||
case (old_handler,old_action) of
|
||||
(_, STG_SIG_DFL) -> return $ Default
|
||||
(_, STG_SIG_IGN) -> return $ Ignore
|
||||
(Nothing, _) -> return $ Ignore
|
||||
(Just (_,dyn), _)
|
||||
| Just h <- fromDynamic dyn -> return h
|
||||
| Just io <- fromDynamic dyn -> return (Catch io)
|
||||
-- handlers put there by the base package have type IO ()
|
||||
| otherwise -> return Default
|
||||
|
||||
foreign import ccall unsafe
|
||||
stg_sig_install
|
||||
:: CInt -- sig no.
|
||||
-> CInt -- action code (STG_SIG_HAN etc.)
|
||||
-> Ptr CSigset -- (in, out) blocked
|
||||
-> IO CInt -- (ret) old action code
|
||||
|
||||
getinfo :: (SignalInfo -> IO ()) -> ForeignPtr Word8 -> IO ()
|
||||
getinfo handler fp_info = do
|
||||
si <- unmarshalSigInfo fp_info
|
||||
handler si
|
||||
|
||||
unmarshalSigInfo :: ForeignPtr Word8 -> IO SignalInfo
|
||||
unmarshalSigInfo fp = do
|
||||
withForeignPtr fp $ \p -> do
|
||||
sig <- (#peek siginfo_t, si_signo) p
|
||||
errno <- (#peek siginfo_t, si_errno) p
|
||||
extra <- case sig of
|
||||
_ | sig == sigCHLD -> do
|
||||
pid <- (#peek siginfo_t, si_pid) p
|
||||
uid <- (#peek siginfo_t, si_uid) p
|
||||
wstat <- (#peek siginfo_t, si_status) p
|
||||
pstat <- decipherWaitStatus wstat
|
||||
return SigChldInfo { siginfoPid = pid,
|
||||
siginfoUid = uid,
|
||||
siginfoStatus = pstat }
|
||||
_ | otherwise ->
|
||||
return NoSignalSpecificInfo
|
||||
return
|
||||
SignalInfo {
|
||||
siginfoSignal = sig,
|
||||
siginfoError = Errno errno,
|
||||
siginfoSpecific = extra }
|
||||
|
||||
#endif /* !__PARALLEL_HASKELL__ */
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Alarms
|
||||
|
||||
-- | @scheduleAlarm i@ calls @alarm@ to schedule a real time
|
||||
-- alarm at least @i@ seconds in the future.
|
||||
scheduleAlarm :: Int -> IO Int
|
||||
scheduleAlarm secs = do
|
||||
r <- c_alarm (fromIntegral secs)
|
||||
return (fromIntegral r)
|
||||
|
||||
foreign import ccall unsafe "alarm"
|
||||
c_alarm :: CUInt -> IO CUInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- The NOCLDSTOP flag
|
||||
|
||||
foreign import ccall "&nocldstop" nocldstop :: Ptr Int
|
||||
|
||||
-- | Tells the system whether or not to set the @SA_NOCLDSTOP@ flag when
|
||||
-- installing new signal handlers.
|
||||
setStoppedChildFlag :: Bool -> IO Bool
|
||||
setStoppedChildFlag b = do
|
||||
rc <- peek nocldstop
|
||||
poke nocldstop $ fromEnum (not b)
|
||||
return (rc == (0::Int))
|
||||
|
||||
-- | Queries the current state of the stopped child flag.
|
||||
queryStoppedChildFlag :: IO Bool
|
||||
queryStoppedChildFlag = do
|
||||
rc <- peek nocldstop
|
||||
return (rc == (0::Int))
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Manipulating signal sets
|
||||
|
||||
newtype SignalSet = SignalSet (ForeignPtr CSigset)
|
||||
|
||||
emptySignalSet :: SignalSet
|
||||
emptySignalSet = unsafePerformIO $ do
|
||||
fp <- mallocForeignPtrBytes sizeof_sigset_t
|
||||
throwErrnoIfMinus1_ "emptySignalSet" (withForeignPtr fp $ c_sigemptyset)
|
||||
return (SignalSet fp)
|
||||
|
||||
fullSignalSet :: SignalSet
|
||||
fullSignalSet = unsafePerformIO $ do
|
||||
fp <- mallocForeignPtrBytes sizeof_sigset_t
|
||||
throwErrnoIfMinus1_ "fullSignalSet" (withForeignPtr fp $ c_sigfillset)
|
||||
return (SignalSet fp)
|
||||
|
||||
-- | A set of signals reserved for use by the implementation. In GHC, this will normally
|
||||
-- include either `sigVTALRM` or `sigALRM`.
|
||||
reservedSignals :: SignalSet
|
||||
reservedSignals = addSignal rtsTimerSignal emptySignalSet
|
||||
|
||||
foreign import ccall rtsTimerSignal :: CInt
|
||||
|
||||
infixr `addSignal`, `deleteSignal`
|
||||
addSignal :: Signal -> SignalSet -> SignalSet
|
||||
addSignal sig (SignalSet fp1) = unsafePerformIO $ do
|
||||
fp2 <- mallocForeignPtrBytes sizeof_sigset_t
|
||||
withForeignPtr fp1 $ \p1 ->
|
||||
withForeignPtr fp2 $ \p2 -> do
|
||||
copyBytes p2 p1 sizeof_sigset_t
|
||||
throwErrnoIfMinus1_ "addSignal" (c_sigaddset p2 sig)
|
||||
return (SignalSet fp2)
|
||||
|
||||
deleteSignal :: Signal -> SignalSet -> SignalSet
|
||||
deleteSignal sig (SignalSet fp1) = unsafePerformIO $ do
|
||||
fp2 <- mallocForeignPtrBytes sizeof_sigset_t
|
||||
withForeignPtr fp1 $ \p1 ->
|
||||
withForeignPtr fp2 $ \p2 -> do
|
||||
copyBytes p2 p1 sizeof_sigset_t
|
||||
throwErrnoIfMinus1_ "deleteSignal" (c_sigdelset p2 sig)
|
||||
return (SignalSet fp2)
|
||||
|
||||
inSignalSet :: Signal -> SignalSet -> Bool
|
||||
inSignalSet sig (SignalSet fp) = unsafePerformIO $
|
||||
withForeignPtr fp $ \p -> do
|
||||
r <- throwErrnoIfMinus1 "inSignalSet" (c_sigismember p sig)
|
||||
return (r /= 0)
|
||||
|
||||
-- | @getSignalMask@ calls @sigprocmask@ to determine the
|
||||
-- set of interrupts which are currently being blocked.
|
||||
getSignalMask :: IO SignalSet
|
||||
getSignalMask = do
|
||||
fp <- mallocForeignPtrBytes sizeof_sigset_t
|
||||
withForeignPtr fp $ \p ->
|
||||
throwErrnoIfMinus1_ "getSignalMask" (c_sigprocmask 0 nullPtr p)
|
||||
return (SignalSet fp)
|
||||
|
||||
sigProcMask :: String -> CInt -> SignalSet -> IO ()
|
||||
sigProcMask fn how (SignalSet set) =
|
||||
withForeignPtr set $ \p_set ->
|
||||
throwErrnoIfMinus1_ fn (c_sigprocmask how p_set nullPtr)
|
||||
|
||||
-- | @setSignalMask mask@ calls @sigprocmask@ with
|
||||
-- @SIG_SETMASK@ to block all interrupts in @mask@.
|
||||
setSignalMask :: SignalSet -> IO ()
|
||||
setSignalMask set = sigProcMask "setSignalMask" (CONST_SIG_SETMASK :: CInt) set
|
||||
|
||||
-- | @blockSignals mask@ calls @sigprocmask@ with
|
||||
-- @SIG_BLOCK@ to add all interrupts in @mask@ to the
|
||||
-- set of blocked interrupts.
|
||||
blockSignals :: SignalSet -> IO ()
|
||||
blockSignals set = sigProcMask "blockSignals" (CONST_SIG_BLOCK :: CInt) set
|
||||
|
||||
-- | @unblockSignals mask@ calls @sigprocmask@ with
|
||||
-- @SIG_UNBLOCK@ to remove all interrupts in @mask@ from the
|
||||
-- set of blocked interrupts.
|
||||
unblockSignals :: SignalSet -> IO ()
|
||||
unblockSignals set = sigProcMask "unblockSignals" (CONST_SIG_UNBLOCK :: CInt) set
|
||||
|
||||
-- | @getPendingSignals@ calls @sigpending@ to obtain
|
||||
-- the set of interrupts which have been received but are currently blocked.
|
||||
getPendingSignals :: IO SignalSet
|
||||
getPendingSignals = do
|
||||
fp <- mallocForeignPtrBytes sizeof_sigset_t
|
||||
withForeignPtr fp $ \p ->
|
||||
throwErrnoIfMinus1_ "getPendingSignals" (c_sigpending p)
|
||||
return (SignalSet fp)
|
||||
|
||||
-- | @awaitSignal iset@ suspends execution until an interrupt is received.
|
||||
-- If @iset@ is @Just s@, @awaitSignal@ calls @sigsuspend@, installing
|
||||
-- @s@ as the new signal mask before suspending execution; otherwise, it
|
||||
-- calls @sigsuspend@ with current signal mask. Note that RTS
|
||||
-- scheduler signal (either 'virtualTimerExpired' or 'realTimeAlarm')
|
||||
-- could cause premature termination of this call. It might be necessary to block that
|
||||
-- signal before invocation of @awaitSignal@ with 'blockSignals' 'reservedSignals'.
|
||||
--
|
||||
-- @awaitSignal@ returns when signal was received and processed by a
|
||||
-- signal handler, or if the signal could not be caught. If you have
|
||||
-- installed any signal handlers with @installHandler@, it may be wise
|
||||
-- to call @yield@ directly after @awaitSignal@ to ensure that the
|
||||
-- signal handler runs as promptly as possible.
|
||||
awaitSignal :: Maybe SignalSet -> IO ()
|
||||
awaitSignal maybe_sigset = do
|
||||
fp <- case maybe_sigset of
|
||||
Nothing -> do SignalSet fp <- getSignalMask; return fp
|
||||
Just (SignalSet fp) -> return fp
|
||||
withForeignPtr fp $ \p -> do
|
||||
_ <- c_sigsuspend p
|
||||
return ()
|
||||
-- ignore the return value; according to the docs it can only ever be
|
||||
-- (-1) with errno set to EINTR.
|
||||
-- XXX My manpage says it can also return EFAULT. And why is ignoring
|
||||
-- EINTR the right thing to do?
|
||||
|
||||
foreign import ccall unsafe "sigsuspend"
|
||||
c_sigsuspend :: Ptr CSigset -> IO CInt
|
||||
|
||||
#if defined(darwin_HOST_OS) && __GLASGOW_HASKELL__ < 706
|
||||
-- see http://ghc.haskell.org/trac/ghc/ticket/7359#comment:3
|
||||
-- To be removed when support for GHC 7.4.x is dropped
|
||||
foreign import ccall unsafe "__hscore_sigdelset"
|
||||
c_sigdelset :: Ptr CSigset -> CInt -> IO CInt
|
||||
|
||||
foreign import ccall unsafe "__hscore_sigfillset"
|
||||
c_sigfillset :: Ptr CSigset -> IO CInt
|
||||
|
||||
foreign import ccall unsafe "__hscore_sigismember"
|
||||
c_sigismember :: Ptr CSigset -> CInt -> IO CInt
|
||||
#else
|
||||
foreign import capi unsafe "signal.h sigdelset"
|
||||
c_sigdelset :: Ptr CSigset -> CInt -> IO CInt
|
||||
|
||||
foreign import capi unsafe "signal.h sigfillset"
|
||||
c_sigfillset :: Ptr CSigset -> IO CInt
|
||||
|
||||
foreign import capi unsafe "signal.h sigismember"
|
||||
c_sigismember :: Ptr CSigset -> CInt -> IO CInt
|
||||
#endif
|
||||
|
||||
foreign import ccall unsafe "sigpending"
|
||||
c_sigpending :: Ptr CSigset -> IO CInt
|
@ -1,47 +0,0 @@
|
||||
{-# LANGUAGE CPP #-}
|
||||
{-# LANGUAGE Safe #-}
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Signals.Exts
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX, includes Linuxisms/BSDisms)
|
||||
--
|
||||
-- non-POSIX signal support commonly available
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
#include "HsUnixConfig.h"
|
||||
##include "HsUnixConfig.h"
|
||||
|
||||
#ifdef HAVE_SIGNAL_H
|
||||
#include <signal.h>
|
||||
#endif
|
||||
|
||||
module System.Posix.Signals.Exts (
|
||||
module System.Posix.Signals
|
||||
, sigINFO
|
||||
, sigWINCH
|
||||
, infoEvent
|
||||
, windowChange
|
||||
) where
|
||||
|
||||
import Foreign.C
|
||||
import System.Posix.Signals
|
||||
|
||||
sigINFO :: CInt
|
||||
sigINFO = CONST_SIGINFO
|
||||
|
||||
sigWINCH :: CInt
|
||||
sigWINCH = CONST_SIGWINCH
|
||||
|
||||
|
||||
infoEvent :: Signal
|
||||
infoEvent = sigINFO
|
||||
|
||||
windowChange :: Signal
|
||||
windowChange = sigWINCH
|
@ -1,124 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Temp
|
||||
-- Copyright : (c) Volker Stolz <vs@foldr.org>
|
||||
-- Deian Stefan <deian@cs.stanford.edu>
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org, vs@foldr.org, deian@cs.stanford.edu
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX temporary file and directory creation functions.
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.Temp (
|
||||
mkstemp, mkstemps, mkdtemp
|
||||
) where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import Foreign.C
|
||||
import System.IO
|
||||
#if !HAVE_MKDTEMP
|
||||
import System.Posix.Directory (createDirectory)
|
||||
#endif
|
||||
import System.Posix.IO
|
||||
import System.Posix.Types
|
||||
import System.Posix.Internals (withFilePath, peekFilePath)
|
||||
|
||||
foreign import capi unsafe "HsUnix.h mkstemp"
|
||||
c_mkstemp :: CString -> IO CInt
|
||||
|
||||
-- | Make a unique filename and open it for reading\/writing. The returned
|
||||
-- 'FilePath' is the (possibly relative) path of the created file, which is
|
||||
-- padded with 6 random characters. The argument is the desired prefix of the
|
||||
-- filepath of the temporary file to be created.
|
||||
--
|
||||
-- If you aren't using GHC or Hugs then this function simply wraps mktemp and
|
||||
-- so shouldn't be considered safe.
|
||||
mkstemp :: String -> IO (FilePath, Handle)
|
||||
mkstemp template' = do
|
||||
let template = template' ++ "XXXXXX"
|
||||
withFilePath template $ \ ptr -> do
|
||||
fd <- throwErrnoIfMinus1 "mkstemp" (c_mkstemp ptr)
|
||||
name <- peekFilePath ptr
|
||||
h <- fdToHandle (Fd fd)
|
||||
return (name, h)
|
||||
|
||||
#if HAVE_MKSTEMPS
|
||||
foreign import capi unsafe "HsUnix.h mkstemps"
|
||||
c_mkstemps :: CString -> CInt -> IO CInt
|
||||
#endif
|
||||
|
||||
-- | Make a unique filename with a given prefix and suffix and open it for
|
||||
-- reading\/writing. The returned 'FilePath' is the (possibly relative) path of
|
||||
-- the created file, which contains 6 random characters in between the prefix
|
||||
-- and suffix. The first argument is the desired prefix of the filepath of the
|
||||
-- temporary file to be created. The second argument is the suffix of the
|
||||
-- temporary file to be created.
|
||||
--
|
||||
-- If you are using as system that doesn't support the mkstemps glibc function
|
||||
-- (supported in glibc > 2.11) then this function simply throws an error.
|
||||
mkstemps :: String -> String -> IO (FilePath, Handle)
|
||||
#if HAVE_MKSTEMPS
|
||||
mkstemps prefix suffix = do
|
||||
let template = prefix ++ "XXXXXX" ++ suffix
|
||||
lenOfsuf = (fromIntegral $ length suffix) :: CInt
|
||||
withFilePath template $ \ ptr -> do
|
||||
fd <- throwErrnoIfMinus1 "mkstemps" (c_mkstemps ptr lenOfsuf)
|
||||
name <- peekFilePath ptr
|
||||
h <- fdToHandle (Fd fd)
|
||||
return (name, h)
|
||||
#else
|
||||
mkstemps = error "System.Posix.Temp.mkstemps: not available on this platform"
|
||||
#endif
|
||||
|
||||
#if HAVE_MKDTEMP
|
||||
foreign import capi unsafe "HsUnix.h mkdtemp"
|
||||
c_mkdtemp :: CString -> IO CString
|
||||
#endif
|
||||
|
||||
-- | Make a unique directory. The returned 'FilePath' is the path of the
|
||||
-- created directory, which is padded with 6 random characters. The argument is
|
||||
-- the desired prefix of the filepath of the temporary directory to be created.
|
||||
--
|
||||
-- If you are using as system that doesn't support the mkdtemp glibc function
|
||||
-- (supported in glibc > 2.1.91) then this function uses mktemp and so
|
||||
-- shouldn't be considered safe.
|
||||
mkdtemp :: String -> IO FilePath
|
||||
mkdtemp template' = do
|
||||
let template = template' ++ "XXXXXX"
|
||||
#if HAVE_MKDTEMP
|
||||
withFilePath template $ \ ptr -> do
|
||||
_ <- throwErrnoIfNull "mkdtemp" (c_mkdtemp ptr)
|
||||
name <- peekFilePath ptr
|
||||
return name
|
||||
#else
|
||||
name <- mktemp template
|
||||
h <- createDirectory name (toEnum 0o700)
|
||||
return name
|
||||
#endif
|
||||
|
||||
#if !HAVE_MKDTEMP
|
||||
|
||||
foreign import ccall unsafe "mktemp"
|
||||
c_mktemp :: CString -> IO CString
|
||||
|
||||
-- | Make a unique file name It is required that the template have six trailing
|
||||
-- \'X\'s. This function should be considered deprecated.
|
||||
{-# WARNING mktemp "This function is unsafe; use mkstemp instead" #-}
|
||||
mktemp :: String -> IO String
|
||||
mktemp template = do
|
||||
withFilePath template $ \ ptr -> do
|
||||
ptr <- throwErrnoIfNull "mktemp" (c_mktemp ptr)
|
||||
peekFilePath ptr
|
||||
#endif
|
||||
|
@ -1,124 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Temp.ByteString
|
||||
-- Copyright : (c) Volker Stolz <vs@foldr.org>
|
||||
-- Deian Stefan <deian@cs.stanford.edu>
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org, vs@foldr.org, deian@cs.stanford.edu
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX temporary file and directory creation functions.
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.Temp.ByteString (
|
||||
mkstemp, mkstemps, mkdtemp
|
||||
) where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import Data.ByteString (ByteString)
|
||||
import qualified Data.ByteString as B
|
||||
import qualified Data.ByteString.Char8 as BC
|
||||
|
||||
import Foreign.C
|
||||
|
||||
import System.IO
|
||||
import System.Posix.ByteString.FilePath
|
||||
#if !HAVE_MKDTEMP
|
||||
import System.Posix.Directory (createDirectory)
|
||||
#endif
|
||||
import System.Posix.IO
|
||||
import System.Posix.Types
|
||||
|
||||
foreign import capi unsafe "HsUnix.h mkstemp"
|
||||
c_mkstemp :: CString -> IO CInt
|
||||
|
||||
-- | Make a unique filename and open it for reading\/writing. The returned
|
||||
-- 'RawFilePath' is the (possibly relative) path of the created file, which is
|
||||
-- padded with 6 random characters. The argument is the desired prefix of the
|
||||
-- filepath of the temporary file to be created.
|
||||
--
|
||||
-- If you aren't using GHC or Hugs then this function simply wraps mktemp and
|
||||
-- so shouldn't be considered safe.
|
||||
mkstemp :: ByteString -> IO (RawFilePath, Handle)
|
||||
mkstemp template' = do
|
||||
let template = template' `B.append` (BC.pack "XXXXXX")
|
||||
withFilePath template $ \ ptr -> do
|
||||
fd <- throwErrnoIfMinus1 "mkstemp" (c_mkstemp ptr)
|
||||
name <- peekFilePath ptr
|
||||
h <- fdToHandle (Fd fd)
|
||||
return (name, h)
|
||||
|
||||
#if HAVE_MKSTEMPS
|
||||
foreign import capi unsafe "HsUnix.h mkstemps"
|
||||
c_mkstemps :: CString -> CInt -> IO CInt
|
||||
#endif
|
||||
|
||||
-- |'mkstemps' - make a unique filename with a given prefix and suffix
|
||||
-- and open it for reading\/writing (only safe on GHC & Hugs).
|
||||
-- The returned 'RawFilePath' is the (possibly relative) path of
|
||||
-- the created file, which contains 6 random characters in between
|
||||
-- the prefix and suffix.
|
||||
mkstemps :: ByteString -> ByteString -> IO (RawFilePath, Handle)
|
||||
#if HAVE_MKSTEMPS
|
||||
mkstemps prefix suffix = do
|
||||
let template = prefix `B.append` (BC.pack "XXXXXX") `B.append` suffix
|
||||
lenOfsuf = (fromIntegral $ B.length suffix) :: CInt
|
||||
withFilePath template $ \ ptr -> do
|
||||
fd <- throwErrnoIfMinus1 "mkstemps" (c_mkstemps ptr lenOfsuf)
|
||||
name <- peekFilePath ptr
|
||||
h <- fdToHandle (Fd fd)
|
||||
return (name, h)
|
||||
#else
|
||||
mkstemps = error "System.Posix.Temp.mkstemps: not available on this platform"
|
||||
#endif
|
||||
|
||||
#if HAVE_MKDTEMP
|
||||
foreign import capi unsafe "HsUnix.h mkdtemp"
|
||||
c_mkdtemp :: CString -> IO CString
|
||||
#endif
|
||||
|
||||
-- | Make a unique directory. The returned 'RawFilePath' is the path of the
|
||||
-- created directory, which is padded with 6 random characters. The argument is
|
||||
-- the desired prefix of the filepath of the temporary directory to be created.
|
||||
--
|
||||
-- If you aren't using GHC or Hugs then this function simply wraps mktemp and
|
||||
-- so shouldn't be considered safe.
|
||||
mkdtemp :: ByteString -> IO RawFilePath
|
||||
mkdtemp template' = do
|
||||
let template = template' `B.append` (BC.pack "XXXXXX")
|
||||
#if HAVE_MKDTEMP
|
||||
withFilePath template $ \ ptr -> do
|
||||
_ <- throwErrnoIfNull "mkdtemp" (c_mkdtemp ptr)
|
||||
name <- peekFilePath ptr
|
||||
return name
|
||||
#else
|
||||
name <- mktemp template
|
||||
h <- createDirectory (BC.unpack name) (toEnum 0o700)
|
||||
return name
|
||||
#endif
|
||||
|
||||
#if !HAVE_MKDTEMP
|
||||
|
||||
foreign import ccall unsafe "mktemp"
|
||||
c_mktemp :: CString -> IO CString
|
||||
|
||||
-- | Make a unique file name It is required that the template have six trailing
|
||||
-- \'X\'s. This function should be considered deprecated.
|
||||
{-# WARNING mktemp "This function is unsafe; use mkstemp instead" #-}
|
||||
mktemp :: ByteString -> IO RawFilePath
|
||||
mktemp template = do
|
||||
withFilePath template $ \ ptr -> do
|
||||
ptr <- throwErrnoIfNull "mktemp" (c_mktemp ptr)
|
||||
peekFilePath ptr
|
||||
#endif
|
||||
|
@ -1,219 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Terminal
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX Terminal support
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.Terminal (
|
||||
-- * Terminal support
|
||||
|
||||
-- ** Terminal attributes
|
||||
TerminalAttributes,
|
||||
getTerminalAttributes,
|
||||
TerminalState(..),
|
||||
setTerminalAttributes,
|
||||
|
||||
TerminalMode(..),
|
||||
withoutMode,
|
||||
withMode,
|
||||
terminalMode,
|
||||
bitsPerByte,
|
||||
withBits,
|
||||
|
||||
ControlCharacter(..),
|
||||
controlChar,
|
||||
withCC,
|
||||
withoutCC,
|
||||
|
||||
inputTime,
|
||||
withTime,
|
||||
minInput,
|
||||
withMinInput,
|
||||
|
||||
BaudRate(..),
|
||||
inputSpeed,
|
||||
withInputSpeed,
|
||||
outputSpeed,
|
||||
withOutputSpeed,
|
||||
|
||||
-- ** Terminal operations
|
||||
sendBreak,
|
||||
drainOutput,
|
||||
QueueSelector(..),
|
||||
discardData,
|
||||
FlowAction(..),
|
||||
controlFlow,
|
||||
|
||||
-- ** Process groups
|
||||
getTerminalProcessGroupID,
|
||||
setTerminalProcessGroupID,
|
||||
|
||||
-- ** Testing a file descriptor
|
||||
queryTerminal,
|
||||
getTerminalName,
|
||||
getControllingTerminalName,
|
||||
|
||||
-- ** Pseudoterminal operations
|
||||
openPseudoTerminal,
|
||||
getSlaveTerminalName
|
||||
) where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import Foreign
|
||||
import Foreign.C
|
||||
import System.Posix.Terminal.Common
|
||||
import System.Posix.Types
|
||||
#ifndef HAVE_OPENPTY
|
||||
import System.Posix.IO
|
||||
#endif
|
||||
|
||||
import System.Posix.Internals (peekFilePath)
|
||||
|
||||
#if !HAVE_CTERMID
|
||||
import System.IO.Error ( ioeSetLocation )
|
||||
import GHC.IO.Exception ( unsupportedOperation )
|
||||
#endif
|
||||
|
||||
-- | @getTerminalName fd@ calls @ttyname@ to obtain a name associated
|
||||
-- with the terminal for @Fd@ @fd@. If @fd@ is associated
|
||||
-- with a terminal, @getTerminalName@ returns the name of the
|
||||
-- terminal.
|
||||
getTerminalName :: Fd -> IO FilePath
|
||||
getTerminalName (Fd fd) = do
|
||||
s <- throwErrnoIfNull "getTerminalName" (c_ttyname fd)
|
||||
peekFilePath s
|
||||
|
||||
foreign import ccall unsafe "ttyname"
|
||||
c_ttyname :: CInt -> IO CString
|
||||
|
||||
-- | @getControllingTerminalName@ calls @ctermid@ to obtain
|
||||
-- a name associated with the controlling terminal for the process. If a
|
||||
-- controlling terminal exists,
|
||||
-- @getControllingTerminalName@ returns the name of the
|
||||
-- controlling terminal.
|
||||
--
|
||||
-- Throws 'IOError' (\"unsupported operation\") if platform does not
|
||||
-- provide @ctermid(3)@ (use @#if HAVE_CTERMID@ CPP guard to
|
||||
-- detect availability).
|
||||
getControllingTerminalName :: IO FilePath
|
||||
#if HAVE_CTERMID
|
||||
getControllingTerminalName = do
|
||||
s <- throwErrnoIfNull "getControllingTerminalName" (c_ctermid nullPtr)
|
||||
peekFilePath s
|
||||
|
||||
foreign import capi unsafe "termios.h ctermid"
|
||||
c_ctermid :: CString -> IO CString
|
||||
#else
|
||||
{-# WARNING getControllingTerminalName
|
||||
"operation will throw 'IOError' \"unsupported operation\" (CPP guard: @#if HAVE_CTERMID@)" #-}
|
||||
getControllingTerminalName = ioError (ioeSetLocation unsupportedOperation "getControllingTerminalName")
|
||||
#endif
|
||||
|
||||
-- | @getSlaveTerminalName@ calls @ptsname@ to obtain the name of the
|
||||
-- slave terminal associated with a pseudoterminal pair. The file
|
||||
-- descriptor to pass in must be that of the master.
|
||||
getSlaveTerminalName :: Fd -> IO FilePath
|
||||
|
||||
#ifdef HAVE_PTSNAME
|
||||
getSlaveTerminalName (Fd fd) = do
|
||||
s <- throwErrnoIfNull "getSlaveTerminalName" (c_ptsname fd)
|
||||
peekFilePath s
|
||||
|
||||
# if __GLASGOW_HASKELL__ < 800
|
||||
-- see comment in cbits/HsUnix.c
|
||||
foreign import ccall unsafe "__hsunix_ptsname"
|
||||
c_ptsname :: CInt -> IO CString
|
||||
# else
|
||||
foreign import capi unsafe "HsUnix.h ptsname"
|
||||
c_ptsname :: CInt -> IO CString
|
||||
# endif
|
||||
#else
|
||||
getSlaveTerminalName _ =
|
||||
ioError (errnoToIOError "getSlaveTerminalName" eNOSYS Nothing Nothing)
|
||||
#endif
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- openPseudoTerminal needs to be here because it depends on
|
||||
-- getSlaveTerminalName.
|
||||
|
||||
-- | @openPseudoTerminal@ creates a pseudoterminal (pty) pair, and
|
||||
-- returns the newly created pair as a (@master@, @slave@) tuple.
|
||||
openPseudoTerminal :: IO (Fd, Fd)
|
||||
|
||||
#ifdef HAVE_OPENPTY
|
||||
openPseudoTerminal =
|
||||
alloca $ \p_master ->
|
||||
alloca $ \p_slave -> do
|
||||
throwErrnoIfMinus1_ "openPty"
|
||||
(c_openpty p_master p_slave nullPtr nullPtr nullPtr)
|
||||
master <- peek p_master
|
||||
slave <- peek p_slave
|
||||
return (Fd master, Fd slave)
|
||||
|
||||
foreign import ccall unsafe "openpty"
|
||||
c_openpty :: Ptr CInt -> Ptr CInt -> CString -> Ptr CTermios -> Ptr a
|
||||
-> IO CInt
|
||||
#else
|
||||
openPseudoTerminal = do
|
||||
(Fd master) <- openFd "/dev/ptmx" ReadWrite Nothing
|
||||
defaultFileFlags{noctty=True}
|
||||
throwErrnoIfMinus1_ "openPseudoTerminal" (c_grantpt master)
|
||||
throwErrnoIfMinus1_ "openPseudoTerminal" (c_unlockpt master)
|
||||
slaveName <- getSlaveTerminalName (Fd master)
|
||||
slave <- openFd slaveName ReadWrite Nothing defaultFileFlags{noctty=True}
|
||||
pushModule slave "ptem"
|
||||
pushModule slave "ldterm"
|
||||
# ifndef __hpux
|
||||
pushModule slave "ttcompat"
|
||||
# endif /* __hpux */
|
||||
return (Fd master, slave)
|
||||
|
||||
-- Push a STREAMS module, for System V systems.
|
||||
pushModule :: Fd -> String -> IO ()
|
||||
pushModule (Fd fd) name =
|
||||
withCString name $ \p_name ->
|
||||
throwErrnoIfMinus1_ "openPseudoTerminal"
|
||||
(c_push_module fd p_name)
|
||||
|
||||
foreign import ccall unsafe "__hsunix_push_module"
|
||||
c_push_module :: CInt -> CString -> IO CInt
|
||||
|
||||
#ifdef HAVE_PTSNAME
|
||||
# if __GLASGOW_HASKELL__ < 800
|
||||
-- see comment in cbits/HsUnix.c
|
||||
foreign import ccall unsafe "__hsunix_grantpt"
|
||||
c_grantpt :: CInt -> IO CInt
|
||||
|
||||
foreign import ccall unsafe "__hsunix_unlockpt"
|
||||
c_unlockpt :: CInt -> IO CInt
|
||||
# else
|
||||
foreign import capi unsafe "HsUnix.h grantpt"
|
||||
c_grantpt :: CInt -> IO CInt
|
||||
|
||||
foreign import capi unsafe "HsUnix.h unlockpt"
|
||||
c_unlockpt :: CInt -> IO CInt
|
||||
# endif
|
||||
#else
|
||||
c_grantpt :: CInt -> IO CInt
|
||||
c_grantpt _ = return (fromIntegral 0)
|
||||
|
||||
c_unlockpt :: CInt -> IO CInt
|
||||
c_unlockpt _ = return (fromIntegral 0)
|
||||
#endif /* HAVE_PTSNAME */
|
||||
#endif /* !HAVE_OPENPTY */
|
||||
|
@ -1,226 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Terminal.ByteString
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX Terminal support
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.Terminal.ByteString (
|
||||
-- * Terminal support
|
||||
|
||||
-- ** Terminal attributes
|
||||
TerminalAttributes,
|
||||
getTerminalAttributes,
|
||||
TerminalState(..),
|
||||
setTerminalAttributes,
|
||||
|
||||
TerminalMode(..),
|
||||
withoutMode,
|
||||
withMode,
|
||||
terminalMode,
|
||||
bitsPerByte,
|
||||
withBits,
|
||||
|
||||
ControlCharacter(..),
|
||||
controlChar,
|
||||
withCC,
|
||||
withoutCC,
|
||||
|
||||
inputTime,
|
||||
withTime,
|
||||
minInput,
|
||||
withMinInput,
|
||||
|
||||
BaudRate(..),
|
||||
inputSpeed,
|
||||
withInputSpeed,
|
||||
outputSpeed,
|
||||
withOutputSpeed,
|
||||
|
||||
-- ** Terminal operations
|
||||
sendBreak,
|
||||
drainOutput,
|
||||
QueueSelector(..),
|
||||
discardData,
|
||||
FlowAction(..),
|
||||
controlFlow,
|
||||
|
||||
-- ** Process groups
|
||||
getTerminalProcessGroupID,
|
||||
setTerminalProcessGroupID,
|
||||
|
||||
-- ** Testing a file descriptor
|
||||
queryTerminal,
|
||||
getTerminalName,
|
||||
getControllingTerminalName,
|
||||
|
||||
-- ** Pseudoterminal operations
|
||||
openPseudoTerminal,
|
||||
getSlaveTerminalName
|
||||
) where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import Foreign
|
||||
import System.Posix.Types
|
||||
import System.Posix.Terminal.Common
|
||||
#ifndef HAVE_OPENPTY
|
||||
import System.Posix.IO.ByteString (defaultFileFlags, openFd, noctty, OpenMode(ReadWrite))
|
||||
import Data.ByteString.Char8 as B ( pack, )
|
||||
#endif
|
||||
|
||||
import Foreign.C hiding (
|
||||
throwErrnoPath,
|
||||
throwErrnoPathIf,
|
||||
throwErrnoPathIf_,
|
||||
throwErrnoPathIfNull,
|
||||
throwErrnoPathIfMinus1,
|
||||
throwErrnoPathIfMinus1_ )
|
||||
|
||||
import System.Posix.ByteString.FilePath
|
||||
|
||||
#if !HAVE_CTERMID
|
||||
import System.IO.Error ( ioeSetLocation )
|
||||
import GHC.IO.Exception ( unsupportedOperation )
|
||||
#endif
|
||||
|
||||
-- | @getTerminalName fd@ calls @ttyname@ to obtain a name associated
|
||||
-- with the terminal for @Fd@ @fd@. If @fd@ is associated
|
||||
-- with a terminal, @getTerminalName@ returns the name of the
|
||||
-- terminal.
|
||||
getTerminalName :: Fd -> IO RawFilePath
|
||||
getTerminalName (Fd fd) = do
|
||||
s <- throwErrnoIfNull "getTerminalName" (c_ttyname fd)
|
||||
peekFilePath s
|
||||
|
||||
foreign import ccall unsafe "ttyname"
|
||||
c_ttyname :: CInt -> IO CString
|
||||
|
||||
-- | @getControllingTerminalName@ calls @ctermid@ to obtain
|
||||
-- a name associated with the controlling terminal for the process. If a
|
||||
-- controlling terminal exists,
|
||||
-- @getControllingTerminalName@ returns the name of the
|
||||
-- controlling terminal.
|
||||
--
|
||||
-- Throws 'IOError' (\"unsupported operation\") if platform does not
|
||||
-- provide @ctermid(3)@ (use @#if HAVE_CTERMID@ CPP guard to
|
||||
-- detect availability).
|
||||
getControllingTerminalName :: IO RawFilePath
|
||||
#if HAVE_CTERMID
|
||||
getControllingTerminalName = do
|
||||
s <- throwErrnoIfNull "getControllingTerminalName" (c_ctermid nullPtr)
|
||||
peekFilePath s
|
||||
|
||||
foreign import capi unsafe "termios.h ctermid"
|
||||
c_ctermid :: CString -> IO CString
|
||||
#else
|
||||
{-# WARNING getControllingTerminalName
|
||||
"operation will throw 'IOError' \"unsupported operation\" (CPP guard: @#if HAVE_CTERMID@)" #-}
|
||||
getControllingTerminalName = ioError (ioeSetLocation unsupportedOperation "getControllingTerminalName")
|
||||
#endif
|
||||
|
||||
-- | @getSlaveTerminalName@ calls @ptsname@ to obtain the name of the
|
||||
-- slave terminal associated with a pseudoterminal pair. The file
|
||||
-- descriptor to pass in must be that of the master.
|
||||
getSlaveTerminalName :: Fd -> IO RawFilePath
|
||||
|
||||
#ifdef HAVE_PTSNAME
|
||||
getSlaveTerminalName (Fd fd) = do
|
||||
s <- throwErrnoIfNull "getSlaveTerminalName" (c_ptsname fd)
|
||||
peekFilePath s
|
||||
|
||||
# if __GLASGOW_HASKELL__ < 800
|
||||
-- see comment in cbits/HsUnix.c
|
||||
foreign import ccall unsafe "__hsunix_ptsname"
|
||||
c_ptsname :: CInt -> IO CString
|
||||
# else
|
||||
foreign import capi unsafe "HsUnix.h ptsname"
|
||||
c_ptsname :: CInt -> IO CString
|
||||
# endif
|
||||
#else
|
||||
getSlaveTerminalName _ =
|
||||
ioError (errnoToIOError "getSlaveTerminalName" eNOSYS Nothing Nothing)
|
||||
#endif
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- openPseudoTerminal needs to be here because it depends on
|
||||
-- getSlaveTerminalName.
|
||||
|
||||
-- | @openPseudoTerminal@ creates a pseudoterminal (pty) pair, and
|
||||
-- returns the newly created pair as a (@master@, @slave@) tuple.
|
||||
openPseudoTerminal :: IO (Fd, Fd)
|
||||
|
||||
#ifdef HAVE_OPENPTY
|
||||
openPseudoTerminal =
|
||||
alloca $ \p_master ->
|
||||
alloca $ \p_slave -> do
|
||||
throwErrnoIfMinus1_ "openPty"
|
||||
(c_openpty p_master p_slave nullPtr nullPtr nullPtr)
|
||||
master <- peek p_master
|
||||
slave <- peek p_slave
|
||||
return (Fd master, Fd slave)
|
||||
|
||||
foreign import ccall unsafe "openpty"
|
||||
c_openpty :: Ptr CInt -> Ptr CInt -> CString -> Ptr CTermios -> Ptr a
|
||||
-> IO CInt
|
||||
#else
|
||||
openPseudoTerminal = do
|
||||
(Fd master) <- openFd (B.pack "/dev/ptmx") ReadWrite Nothing
|
||||
defaultFileFlags{noctty=True}
|
||||
throwErrnoIfMinus1_ "openPseudoTerminal" (c_grantpt master)
|
||||
throwErrnoIfMinus1_ "openPseudoTerminal" (c_unlockpt master)
|
||||
slaveName <- getSlaveTerminalName (Fd master)
|
||||
slave <- openFd slaveName ReadWrite Nothing defaultFileFlags{noctty=True}
|
||||
pushModule slave "ptem"
|
||||
pushModule slave "ldterm"
|
||||
# ifndef __hpux
|
||||
pushModule slave "ttcompat"
|
||||
# endif /* __hpux */
|
||||
return (Fd master, slave)
|
||||
|
||||
-- Push a STREAMS module, for System V systems.
|
||||
pushModule :: Fd -> String -> IO ()
|
||||
pushModule (Fd fd) name =
|
||||
withCString name $ \p_name ->
|
||||
throwErrnoIfMinus1_ "openPseudoTerminal"
|
||||
(c_push_module fd p_name)
|
||||
|
||||
foreign import ccall unsafe "__hsunix_push_module"
|
||||
c_push_module :: CInt -> CString -> IO CInt
|
||||
|
||||
#if HAVE_PTSNAME
|
||||
# if __GLASGOW_HASKELL__ < 800
|
||||
-- see comment in cbits/HsUnix.c
|
||||
foreign import ccall unsafe "__hsunix_grantpt"
|
||||
c_grantpt :: CInt -> IO CInt
|
||||
|
||||
foreign import ccall unsafe "__hsunix_unlockpt"
|
||||
c_unlockpt :: CInt -> IO CInt
|
||||
# else
|
||||
foreign import capi unsafe "HsUnix.h grantpt"
|
||||
c_grantpt :: CInt -> IO CInt
|
||||
|
||||
foreign import capi unsafe "HsUnix.h unlockpt"
|
||||
c_unlockpt :: CInt -> IO CInt
|
||||
# endif
|
||||
#else
|
||||
c_grantpt :: CInt -> IO CInt
|
||||
c_grantpt _ = return (fromIntegral (0::Int))
|
||||
|
||||
c_unlockpt :: CInt -> IO CInt
|
||||
c_unlockpt _ = return (fromIntegral (0::Int))
|
||||
#endif /* HAVE_PTSNAME */
|
||||
#endif /* !HAVE_OPENPTY */
|
@ -1,881 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Terminal.Common
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX Terminal support
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
-- see https://android.googlesource.com/platform/bionic/+/9ae59c0/libc/bionic/pathconf.c#37
|
||||
#if !defined(_POSIX_VDISABLE) && defined(__ANDROID__)
|
||||
#define _POSIX_VDISABLE -1
|
||||
#endif
|
||||
|
||||
|
||||
module System.Posix.Terminal.Common (
|
||||
-- * Terminal support
|
||||
|
||||
-- ** Terminal attributes
|
||||
TerminalAttributes,
|
||||
getTerminalAttributes,
|
||||
TerminalState(..),
|
||||
setTerminalAttributes,
|
||||
|
||||
CTermios,
|
||||
TerminalMode(..),
|
||||
withoutMode,
|
||||
withMode,
|
||||
terminalMode,
|
||||
bitsPerByte,
|
||||
withBits,
|
||||
|
||||
ControlCharacter(..),
|
||||
controlChar,
|
||||
withCC,
|
||||
withoutCC,
|
||||
|
||||
inputTime,
|
||||
withTime,
|
||||
minInput,
|
||||
withMinInput,
|
||||
|
||||
BaudRate(..),
|
||||
inputSpeed,
|
||||
withInputSpeed,
|
||||
outputSpeed,
|
||||
withOutputSpeed,
|
||||
|
||||
-- ** Terminal operations
|
||||
sendBreak,
|
||||
drainOutput,
|
||||
QueueSelector(..),
|
||||
discardData,
|
||||
FlowAction(..),
|
||||
controlFlow,
|
||||
|
||||
-- ** Process groups
|
||||
getTerminalProcessGroupID,
|
||||
setTerminalProcessGroupID,
|
||||
|
||||
-- ** Testing a file descriptor
|
||||
queryTerminal,
|
||||
) where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import Data.Bits
|
||||
import Data.Char
|
||||
import Foreign.C.Error ( throwErrnoIfMinus1, throwErrnoIfMinus1_ )
|
||||
import Foreign.C.Types
|
||||
import Foreign.ForeignPtr ( ForeignPtr, withForeignPtr, mallocForeignPtrBytes )
|
||||
import Foreign.Marshal.Utils ( copyBytes )
|
||||
import Foreign.Ptr ( Ptr, plusPtr )
|
||||
import Foreign.Storable ( Storable(..) )
|
||||
import System.IO.Unsafe ( unsafePerformIO )
|
||||
import System.Posix.Types
|
||||
import System.Posix.Internals ( CTermios )
|
||||
|
||||
#if !HAVE_TCDRAIN
|
||||
import System.IO.Error ( ioeSetLocation )
|
||||
import GHC.IO.Exception ( unsupportedOperation )
|
||||
#endif
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Terminal attributes
|
||||
|
||||
newtype TerminalAttributes = TerminalAttributes (ForeignPtr CTermios)
|
||||
|
||||
makeTerminalAttributes :: ForeignPtr CTermios -> TerminalAttributes
|
||||
makeTerminalAttributes = TerminalAttributes
|
||||
|
||||
withTerminalAttributes :: TerminalAttributes -> (Ptr CTermios -> IO a) -> IO a
|
||||
withTerminalAttributes (TerminalAttributes termios) = withForeignPtr termios
|
||||
|
||||
|
||||
data TerminalMode
|
||||
-- input flags
|
||||
= InterruptOnBreak -- ^ @BRKINT@ - Signal interrupt on break
|
||||
| MapCRtoLF -- ^ @ICRNL@ - Map CR to NL on input
|
||||
| IgnoreBreak -- ^ @IGNBRK@ - Ignore break condition
|
||||
| IgnoreCR -- ^ @IGNCR@ - Ignore CR
|
||||
| IgnoreParityErrors -- ^ @IGNPAR@ - Ignore characters with parity errors
|
||||
| MapLFtoCR -- ^ @INLCR@ - Map NL to CR on input
|
||||
| CheckParity -- ^ @INPCK@ - Enable input parity check
|
||||
| StripHighBit -- ^ @ISTRIP@ - Strip character
|
||||
| RestartOnAny -- ^ @IXANY@ - Enable any character to restart output
|
||||
| StartStopInput -- ^ @IXOFF@ - Enable start/stop input control
|
||||
| StartStopOutput -- ^ @IXON@ - Enable start/stop output control
|
||||
| MarkParityErrors -- ^ @PARMRK@ - Mark parity errors
|
||||
|
||||
-- output flags
|
||||
| ProcessOutput -- ^ @OPOST@ - Post-process output
|
||||
| MapLFtoCRLF -- ^ @ONLCR@ - (XSI) Map NL to CR-NL on output
|
||||
--
|
||||
-- @since 2.8.0.0
|
||||
| OutputMapCRtoLF -- ^ @OCRNL@ - (XSI) Map CR to NL on output
|
||||
--
|
||||
-- @since 2.8.0.0
|
||||
| NoCRAtColumnZero -- ^ @ONOCR@ - (XSI) No CR output at column 0
|
||||
--
|
||||
-- @since 2.8.0.0
|
||||
| ReturnMeansLF -- ^ @ONLRET@ - (XSI) NL performs CR function
|
||||
--
|
||||
-- @since 2.8.0.0
|
||||
| TabDelayMask0 -- ^ @TABDLY(TAB0)@ - (XSI) Select horizontal-tab delays: type 0
|
||||
--
|
||||
-- @since 2.8.0.0
|
||||
| TabDelayMask3 -- ^ @TABDLY(TAB3)@ - (XSI) Select horizontal-tab delays: type 3
|
||||
--
|
||||
-- @since 2.8.0.0
|
||||
|
||||
-- control flags
|
||||
| LocalMode -- ^ @CLOCAL@ - Ignore modem status lines
|
||||
| ReadEnable -- ^ @CREAD@ - Enable receiver
|
||||
| TwoStopBits -- ^ @CSTOPB@ - Send two stop bits, else one
|
||||
| HangupOnClose -- ^ @HUPCL@ - Hang up on last close
|
||||
| EnableParity -- ^ @PARENB@ - Parity enable
|
||||
| OddParity -- ^ @PARODD@ - Odd parity, else even
|
||||
|
||||
-- local modes
|
||||
| EnableEcho -- ^ @ECHO@ - Enable echo
|
||||
| EchoErase -- ^ @ECHOE@ - Echo erase character as error-correcting backspace
|
||||
| EchoKill -- ^ @ECHOK@ - Echo KILL
|
||||
| EchoLF -- ^ @ECHONL@ - Echo NL
|
||||
| ProcessInput -- ^ @ICANON@ - Canonical input (erase and kill processing)
|
||||
| ExtendedFunctions -- ^ @IEXTEN@ - Enable extended input character processing
|
||||
| KeyboardInterrupts -- ^ @ISIG@ - Enable signals
|
||||
| NoFlushOnInterrupt -- ^ @NOFLSH@ - Disable flush after interrupt or quit
|
||||
| BackgroundWriteInterrupt -- ^ @TOSTOP@ - Send @SIGTTOU@ for background output
|
||||
|
||||
withoutMode :: TerminalAttributes -> TerminalMode -> TerminalAttributes
|
||||
withoutMode termios InterruptOnBreak = clearInputFlag (#const BRKINT) termios
|
||||
withoutMode termios MapCRtoLF = clearInputFlag (#const ICRNL) termios
|
||||
withoutMode termios IgnoreBreak = clearInputFlag (#const IGNBRK) termios
|
||||
withoutMode termios IgnoreCR = clearInputFlag (#const IGNCR) termios
|
||||
withoutMode termios IgnoreParityErrors = clearInputFlag (#const IGNPAR) termios
|
||||
withoutMode termios MapLFtoCR = clearInputFlag (#const INLCR) termios
|
||||
withoutMode termios CheckParity = clearInputFlag (#const INPCK) termios
|
||||
withoutMode termios StripHighBit = clearInputFlag (#const ISTRIP) termios
|
||||
withoutMode termios RestartOnAny = clearInputFlag (#const IXANY) termios
|
||||
withoutMode termios StartStopInput = clearInputFlag (#const IXOFF) termios
|
||||
withoutMode termios StartStopOutput = clearInputFlag (#const IXON) termios
|
||||
withoutMode termios MarkParityErrors = clearInputFlag (#const PARMRK) termios
|
||||
withoutMode termios ProcessOutput = clearOutputFlag (#const OPOST) termios
|
||||
withoutMode termios MapLFtoCRLF = clearOutputFlag (#const ONLCR) termios
|
||||
withoutMode termios OutputMapCRtoLF = clearOutputFlag (#const OCRNL) termios
|
||||
withoutMode termios NoCRAtColumnZero = clearOutputFlag (#const ONOCR) termios
|
||||
withoutMode termios ReturnMeansLF = clearOutputFlag (#const ONLRET) termios
|
||||
withoutMode termios TabDelayMask0 = clearOutputFlag (#const TAB0) termios
|
||||
withoutMode termios TabDelayMask3 = clearOutputFlag (#const TAB3) termios
|
||||
withoutMode termios LocalMode = clearControlFlag (#const CLOCAL) termios
|
||||
withoutMode termios ReadEnable = clearControlFlag (#const CREAD) termios
|
||||
withoutMode termios TwoStopBits = clearControlFlag (#const CSTOPB) termios
|
||||
withoutMode termios HangupOnClose = clearControlFlag (#const HUPCL) termios
|
||||
withoutMode termios EnableParity = clearControlFlag (#const PARENB) termios
|
||||
withoutMode termios OddParity = clearControlFlag (#const PARODD) termios
|
||||
withoutMode termios EnableEcho = clearLocalFlag (#const ECHO) termios
|
||||
withoutMode termios EchoErase = clearLocalFlag (#const ECHOE) termios
|
||||
withoutMode termios EchoKill = clearLocalFlag (#const ECHOK) termios
|
||||
withoutMode termios EchoLF = clearLocalFlag (#const ECHONL) termios
|
||||
withoutMode termios ProcessInput = clearLocalFlag (#const ICANON) termios
|
||||
withoutMode termios ExtendedFunctions = clearLocalFlag (#const IEXTEN) termios
|
||||
withoutMode termios KeyboardInterrupts = clearLocalFlag (#const ISIG) termios
|
||||
withoutMode termios NoFlushOnInterrupt = setLocalFlag (#const NOFLSH) termios
|
||||
withoutMode termios BackgroundWriteInterrupt = clearLocalFlag (#const TOSTOP) termios
|
||||
|
||||
withMode :: TerminalAttributes -> TerminalMode -> TerminalAttributes
|
||||
withMode termios InterruptOnBreak = setInputFlag (#const BRKINT) termios
|
||||
withMode termios MapCRtoLF = setInputFlag (#const ICRNL) termios
|
||||
withMode termios IgnoreBreak = setInputFlag (#const IGNBRK) termios
|
||||
withMode termios IgnoreCR = setInputFlag (#const IGNCR) termios
|
||||
withMode termios IgnoreParityErrors = setInputFlag (#const IGNPAR) termios
|
||||
withMode termios MapLFtoCR = setInputFlag (#const INLCR) termios
|
||||
withMode termios CheckParity = setInputFlag (#const INPCK) termios
|
||||
withMode termios StripHighBit = setInputFlag (#const ISTRIP) termios
|
||||
withMode termios RestartOnAny = setInputFlag (#const IXANY) termios
|
||||
withMode termios StartStopInput = setInputFlag (#const IXOFF) termios
|
||||
withMode termios StartStopOutput = setInputFlag (#const IXON) termios
|
||||
withMode termios MarkParityErrors = setInputFlag (#const PARMRK) termios
|
||||
withMode termios ProcessOutput = setOutputFlag (#const OPOST) termios
|
||||
withMode termios MapLFtoCRLF = setOutputFlag (#const ONLCR) termios
|
||||
withMode termios OutputMapCRtoLF = setOutputFlag (#const OCRNL) termios
|
||||
withMode termios NoCRAtColumnZero = setOutputFlag (#const ONOCR) termios
|
||||
withMode termios ReturnMeansLF = setOutputFlag (#const ONLRET) termios
|
||||
withMode termios TabDelayMask0 = setOutputFlag (#const TAB0) termios
|
||||
withMode termios TabDelayMask3 = setOutputFlag (#const TAB3) termios
|
||||
withMode termios LocalMode = setControlFlag (#const CLOCAL) termios
|
||||
withMode termios ReadEnable = setControlFlag (#const CREAD) termios
|
||||
withMode termios TwoStopBits = setControlFlag (#const CSTOPB) termios
|
||||
withMode termios HangupOnClose = setControlFlag (#const HUPCL) termios
|
||||
withMode termios EnableParity = setControlFlag (#const PARENB) termios
|
||||
withMode termios OddParity = setControlFlag (#const PARODD) termios
|
||||
withMode termios EnableEcho = setLocalFlag (#const ECHO) termios
|
||||
withMode termios EchoErase = setLocalFlag (#const ECHOE) termios
|
||||
withMode termios EchoKill = setLocalFlag (#const ECHOK) termios
|
||||
withMode termios EchoLF = setLocalFlag (#const ECHONL) termios
|
||||
withMode termios ProcessInput = setLocalFlag (#const ICANON) termios
|
||||
withMode termios ExtendedFunctions = setLocalFlag (#const IEXTEN) termios
|
||||
withMode termios KeyboardInterrupts = setLocalFlag (#const ISIG) termios
|
||||
withMode termios NoFlushOnInterrupt = clearLocalFlag (#const NOFLSH) termios
|
||||
withMode termios BackgroundWriteInterrupt = setLocalFlag (#const TOSTOP) termios
|
||||
|
||||
terminalMode :: TerminalMode -> TerminalAttributes -> Bool
|
||||
terminalMode InterruptOnBreak = testInputFlag (#const BRKINT)
|
||||
terminalMode MapCRtoLF = testInputFlag (#const ICRNL)
|
||||
terminalMode IgnoreBreak = testInputFlag (#const IGNBRK)
|
||||
terminalMode IgnoreCR = testInputFlag (#const IGNCR)
|
||||
terminalMode IgnoreParityErrors = testInputFlag (#const IGNPAR)
|
||||
terminalMode MapLFtoCR = testInputFlag (#const INLCR)
|
||||
terminalMode CheckParity = testInputFlag (#const INPCK)
|
||||
terminalMode StripHighBit = testInputFlag (#const ISTRIP)
|
||||
terminalMode RestartOnAny = testInputFlag (#const IXANY)
|
||||
terminalMode StartStopInput = testInputFlag (#const IXOFF)
|
||||
terminalMode StartStopOutput = testInputFlag (#const IXON)
|
||||
terminalMode MarkParityErrors = testInputFlag (#const PARMRK)
|
||||
terminalMode ProcessOutput = testOutputFlag (#const OPOST)
|
||||
terminalMode MapLFtoCRLF = testOutputFlag (#const ONLCR)
|
||||
terminalMode OutputMapCRtoLF = testOutputFlag (#const OCRNL)
|
||||
terminalMode NoCRAtColumnZero = testOutputFlag (#const ONOCR)
|
||||
terminalMode ReturnMeansLF = testOutputFlag (#const ONLRET)
|
||||
terminalMode TabDelayMask0 = testOutputFlag (#const TAB0)
|
||||
terminalMode TabDelayMask3 = testOutputFlag (#const TAB3)
|
||||
terminalMode LocalMode = testControlFlag (#const CLOCAL)
|
||||
terminalMode ReadEnable = testControlFlag (#const CREAD)
|
||||
terminalMode TwoStopBits = testControlFlag (#const CSTOPB)
|
||||
terminalMode HangupOnClose = testControlFlag (#const HUPCL)
|
||||
terminalMode EnableParity = testControlFlag (#const PARENB)
|
||||
terminalMode OddParity = testControlFlag (#const PARODD)
|
||||
terminalMode EnableEcho = testLocalFlag (#const ECHO)
|
||||
terminalMode EchoErase = testLocalFlag (#const ECHOE)
|
||||
terminalMode EchoKill = testLocalFlag (#const ECHOK)
|
||||
terminalMode EchoLF = testLocalFlag (#const ECHONL)
|
||||
terminalMode ProcessInput = testLocalFlag (#const ICANON)
|
||||
terminalMode ExtendedFunctions = testLocalFlag (#const IEXTEN)
|
||||
terminalMode KeyboardInterrupts = testLocalFlag (#const ISIG)
|
||||
terminalMode NoFlushOnInterrupt = not . testLocalFlag (#const NOFLSH)
|
||||
terminalMode BackgroundWriteInterrupt = testLocalFlag (#const TOSTOP)
|
||||
|
||||
bitsPerByte :: TerminalAttributes -> Int
|
||||
bitsPerByte termios = unsafePerformIO $ do
|
||||
withTerminalAttributes termios $ \p -> do
|
||||
cflag <- (#peek struct termios, c_cflag) p
|
||||
return $! (word2Bits (cflag .&. (#const CSIZE)))
|
||||
where
|
||||
word2Bits :: CTcflag -> Int
|
||||
word2Bits x =
|
||||
if x == (#const CS5) then 5
|
||||
else if x == (#const CS6) then 6
|
||||
else if x == (#const CS7) then 7
|
||||
else if x == (#const CS8) then 8
|
||||
else 0
|
||||
|
||||
withBits :: TerminalAttributes -> Int -> TerminalAttributes
|
||||
withBits termios bits = unsafePerformIO $ do
|
||||
withNewTermios termios $ \p -> do
|
||||
cflag <- (#peek struct termios, c_cflag) p
|
||||
(#poke struct termios, c_cflag) p
|
||||
((cflag .&. complement (#const CSIZE)) .|. mask bits)
|
||||
where
|
||||
mask :: Int -> CTcflag
|
||||
mask 5 = (#const CS5)
|
||||
mask 6 = (#const CS6)
|
||||
mask 7 = (#const CS7)
|
||||
mask 8 = (#const CS8)
|
||||
mask _ = error "withBits bit value out of range [5..8]"
|
||||
|
||||
data ControlCharacter
|
||||
= EndOfFile -- VEOF
|
||||
| EndOfLine -- VEOL
|
||||
| Erase -- VERASE
|
||||
| Interrupt -- VINTR
|
||||
| Kill -- VKILL
|
||||
| Quit -- VQUIT
|
||||
| Start -- VSTART
|
||||
| Stop -- VSTOP
|
||||
| Suspend -- VSUSP
|
||||
|
||||
controlChar :: TerminalAttributes -> ControlCharacter -> Maybe Char
|
||||
controlChar termios cc = unsafePerformIO $ do
|
||||
withTerminalAttributes termios $ \p -> do
|
||||
let c_cc = (#ptr struct termios, c_cc) p
|
||||
val <- peekElemOff c_cc (cc2Word cc)
|
||||
if val == ((#const _POSIX_VDISABLE)::CCc)
|
||||
then return Nothing
|
||||
else return (Just (chr (fromEnum val)))
|
||||
|
||||
withCC :: TerminalAttributes
|
||||
-> (ControlCharacter, Char)
|
||||
-> TerminalAttributes
|
||||
withCC termios (cc, c) = unsafePerformIO $ do
|
||||
withNewTermios termios $ \p -> do
|
||||
let c_cc = (#ptr struct termios, c_cc) p
|
||||
pokeElemOff c_cc (cc2Word cc) (fromIntegral (ord c) :: CCc)
|
||||
|
||||
withoutCC :: TerminalAttributes
|
||||
-> ControlCharacter
|
||||
-> TerminalAttributes
|
||||
withoutCC termios cc = unsafePerformIO $ do
|
||||
withNewTermios termios $ \p -> do
|
||||
let c_cc = (#ptr struct termios, c_cc) p
|
||||
pokeElemOff c_cc (cc2Word cc) ((#const _POSIX_VDISABLE) :: CCc)
|
||||
|
||||
inputTime :: TerminalAttributes -> Int
|
||||
inputTime termios = unsafePerformIO $ do
|
||||
withTerminalAttributes termios $ \p -> do
|
||||
c <- peekElemOff ((#ptr struct termios, c_cc) p) (#const VTIME)
|
||||
return (fromEnum (c :: CCc))
|
||||
|
||||
withTime :: TerminalAttributes -> Int -> TerminalAttributes
|
||||
withTime termios time = unsafePerformIO $ do
|
||||
withNewTermios termios $ \p -> do
|
||||
let c_cc = (#ptr struct termios, c_cc) p
|
||||
pokeElemOff c_cc (#const VTIME) (fromIntegral time :: CCc)
|
||||
|
||||
minInput :: TerminalAttributes -> Int
|
||||
minInput termios = unsafePerformIO $ do
|
||||
withTerminalAttributes termios $ \p -> do
|
||||
c <- peekElemOff ((#ptr struct termios, c_cc) p) (#const VMIN)
|
||||
return (fromEnum (c :: CCc))
|
||||
|
||||
withMinInput :: TerminalAttributes -> Int -> TerminalAttributes
|
||||
withMinInput termios count = unsafePerformIO $ do
|
||||
withNewTermios termios $ \p -> do
|
||||
let c_cc = (#ptr struct termios, c_cc) p
|
||||
pokeElemOff c_cc (#const VMIN) (fromIntegral count :: CCc)
|
||||
|
||||
data BaudRate
|
||||
-- These are the standard rates stipulated by POSIX:
|
||||
= B0
|
||||
| B50
|
||||
| B75
|
||||
| B110
|
||||
| B134
|
||||
| B150
|
||||
| B200
|
||||
| B300
|
||||
| B600
|
||||
| B1200
|
||||
| B1800
|
||||
| B2400
|
||||
| B4800
|
||||
| B9600
|
||||
| B19200
|
||||
| B38400
|
||||
-- These are non-standard rates that are often present on modern Unixes:
|
||||
| B57600
|
||||
| B115200
|
||||
| B230400
|
||||
| B460800
|
||||
| B500000
|
||||
| B576000
|
||||
| B921600
|
||||
| B1000000
|
||||
| B1152000
|
||||
| B1500000
|
||||
| B2000000
|
||||
| B2500000
|
||||
| B3000000
|
||||
| B3500000
|
||||
| B4000000
|
||||
|
||||
inputSpeed :: TerminalAttributes -> BaudRate
|
||||
inputSpeed termios = unsafePerformIO $ do
|
||||
withTerminalAttributes termios $ \p -> do
|
||||
w <- c_cfgetispeed p
|
||||
return (word2Baud w)
|
||||
|
||||
foreign import capi unsafe "termios.h cfgetispeed"
|
||||
c_cfgetispeed :: Ptr CTermios -> IO CSpeed
|
||||
|
||||
withInputSpeed :: TerminalAttributes -> BaudRate -> TerminalAttributes
|
||||
withInputSpeed termios br = unsafePerformIO $ do
|
||||
withNewTermios termios $ \p -> c_cfsetispeed p (baud2Word br)
|
||||
|
||||
foreign import capi unsafe "termios.h cfsetispeed"
|
||||
c_cfsetispeed :: Ptr CTermios -> CSpeed -> IO CInt
|
||||
|
||||
|
||||
outputSpeed :: TerminalAttributes -> BaudRate
|
||||
outputSpeed termios = unsafePerformIO $ do
|
||||
withTerminalAttributes termios $ \p -> do
|
||||
w <- c_cfgetospeed p
|
||||
return (word2Baud w)
|
||||
|
||||
foreign import capi unsafe "termios.h cfgetospeed"
|
||||
c_cfgetospeed :: Ptr CTermios -> IO CSpeed
|
||||
|
||||
withOutputSpeed :: TerminalAttributes -> BaudRate -> TerminalAttributes
|
||||
withOutputSpeed termios br = unsafePerformIO $ do
|
||||
withNewTermios termios $ \p -> c_cfsetospeed p (baud2Word br)
|
||||
|
||||
foreign import capi unsafe "termios.h cfsetospeed"
|
||||
c_cfsetospeed :: Ptr CTermios -> CSpeed -> IO CInt
|
||||
|
||||
-- | @getTerminalAttributes fd@ calls @tcgetattr@ to obtain
|
||||
-- the @TerminalAttributes@ associated with @Fd@ @fd@.
|
||||
getTerminalAttributes :: Fd -> IO TerminalAttributes
|
||||
getTerminalAttributes (Fd fd) = do
|
||||
fp <- mallocForeignPtrBytes (#const sizeof(struct termios))
|
||||
withForeignPtr fp $ \p ->
|
||||
throwErrnoIfMinus1_ "getTerminalAttributes" (c_tcgetattr fd p)
|
||||
return $ makeTerminalAttributes fp
|
||||
|
||||
foreign import capi unsafe "termios.h tcgetattr"
|
||||
c_tcgetattr :: CInt -> Ptr CTermios -> IO CInt
|
||||
|
||||
data TerminalState
|
||||
= Immediately
|
||||
| WhenDrained
|
||||
| WhenFlushed
|
||||
|
||||
-- | @setTerminalAttributes fd attr ts@ calls @tcsetattr@ to change
|
||||
-- the @TerminalAttributes@ associated with @Fd@ @fd@ to
|
||||
-- @attr@, when the terminal is in the state indicated by @ts@.
|
||||
setTerminalAttributes :: Fd
|
||||
-> TerminalAttributes
|
||||
-> TerminalState
|
||||
-> IO ()
|
||||
setTerminalAttributes (Fd fd) termios state = do
|
||||
withTerminalAttributes termios $ \p ->
|
||||
throwErrnoIfMinus1_ "setTerminalAttributes"
|
||||
(c_tcsetattr fd (state2Int state) p)
|
||||
where
|
||||
state2Int :: TerminalState -> CInt
|
||||
state2Int Immediately = (#const TCSANOW)
|
||||
state2Int WhenDrained = (#const TCSADRAIN)
|
||||
state2Int WhenFlushed = (#const TCSAFLUSH)
|
||||
|
||||
foreign import capi unsafe "termios.h tcsetattr"
|
||||
c_tcsetattr :: CInt -> CInt -> Ptr CTermios -> IO CInt
|
||||
|
||||
-- | @sendBreak fd duration@ calls @tcsendbreak@ to transmit a
|
||||
-- continuous stream of zero-valued bits on @Fd@ @fd@ for the
|
||||
-- specified implementation-dependent @duration@.
|
||||
sendBreak :: Fd -> Int -> IO ()
|
||||
sendBreak (Fd fd) duration
|
||||
= throwErrnoIfMinus1_ "sendBreak" (c_tcsendbreak fd (fromIntegral duration))
|
||||
|
||||
foreign import capi unsafe "termios.h tcsendbreak"
|
||||
c_tcsendbreak :: CInt -> CInt -> IO CInt
|
||||
|
||||
-- | @drainOutput fd@ calls @tcdrain@ to block until all output
|
||||
-- written to @Fd@ @fd@ has been transmitted.
|
||||
--
|
||||
-- Throws 'IOError' (\"unsupported operation\") if platform does not
|
||||
-- provide @tcdrain(3)@ (use @#if HAVE_TCDRAIN@ CPP guard to
|
||||
-- detect availability).
|
||||
drainOutput :: Fd -> IO ()
|
||||
#if HAVE_TCDRAIN
|
||||
drainOutput (Fd fd) = throwErrnoIfMinus1_ "drainOutput" (c_tcdrain fd)
|
||||
|
||||
foreign import capi safe "termios.h tcdrain"
|
||||
c_tcdrain :: CInt -> IO CInt
|
||||
#else
|
||||
{-# WARNING drainOutput
|
||||
"operation will throw 'IOError' \"unsupported operation\" (CPP guard: @#if HAVE_TCDRAIN@)" #-}
|
||||
drainOutput _ = ioError (ioeSetLocation unsupportedOperation "drainOutput")
|
||||
#endif
|
||||
|
||||
data QueueSelector
|
||||
= InputQueue -- TCIFLUSH
|
||||
| OutputQueue -- TCOFLUSH
|
||||
| BothQueues -- TCIOFLUSH
|
||||
|
||||
-- | @discardData fd queues@ calls @tcflush@ to discard
|
||||
-- pending input and\/or output for @Fd@ @fd@,
|
||||
-- as indicated by the @QueueSelector@ @queues@.
|
||||
discardData :: Fd -> QueueSelector -> IO ()
|
||||
discardData (Fd fd) queue =
|
||||
throwErrnoIfMinus1_ "discardData" (c_tcflush fd (queue2Int queue))
|
||||
where
|
||||
queue2Int :: QueueSelector -> CInt
|
||||
queue2Int InputQueue = (#const TCIFLUSH)
|
||||
queue2Int OutputQueue = (#const TCOFLUSH)
|
||||
queue2Int BothQueues = (#const TCIOFLUSH)
|
||||
|
||||
foreign import capi unsafe "termios.h tcflush"
|
||||
c_tcflush :: CInt -> CInt -> IO CInt
|
||||
|
||||
data FlowAction
|
||||
= SuspendOutput -- ^ TCOOFF
|
||||
| RestartOutput -- ^ TCOON
|
||||
| TransmitStop -- ^ TCIOFF
|
||||
| TransmitStart -- ^ TCION
|
||||
|
||||
-- | @controlFlow fd action@ calls @tcflow@ to control the
|
||||
-- flow of data on @Fd@ @fd@, as indicated by
|
||||
-- @action@.
|
||||
controlFlow :: Fd -> FlowAction -> IO ()
|
||||
controlFlow (Fd fd) action =
|
||||
throwErrnoIfMinus1_ "controlFlow" (c_tcflow fd (action2Int action))
|
||||
where
|
||||
action2Int :: FlowAction -> CInt
|
||||
action2Int SuspendOutput = (#const TCOOFF)
|
||||
action2Int RestartOutput = (#const TCOON)
|
||||
action2Int TransmitStop = (#const TCIOFF)
|
||||
action2Int TransmitStart = (#const TCION)
|
||||
|
||||
foreign import capi unsafe "termios.h tcflow"
|
||||
c_tcflow :: CInt -> CInt -> IO CInt
|
||||
|
||||
-- | @getTerminalProcessGroupID fd@ calls @tcgetpgrp@ to
|
||||
-- obtain the @ProcessGroupID@ of the foreground process group
|
||||
-- associated with the terminal attached to @Fd@ @fd@.
|
||||
getTerminalProcessGroupID :: Fd -> IO ProcessGroupID
|
||||
getTerminalProcessGroupID (Fd fd) = do
|
||||
throwErrnoIfMinus1 "getTerminalProcessGroupID" (c_tcgetpgrp fd)
|
||||
|
||||
foreign import ccall unsafe "tcgetpgrp"
|
||||
c_tcgetpgrp :: CInt -> IO CPid
|
||||
|
||||
-- | @setTerminalProcessGroupID fd pgid@ calls @tcsetpgrp@ to
|
||||
-- set the @ProcessGroupID@ of the foreground process group
|
||||
-- associated with the terminal attached to @Fd@
|
||||
-- @fd@ to @pgid@.
|
||||
setTerminalProcessGroupID :: Fd -> ProcessGroupID -> IO ()
|
||||
setTerminalProcessGroupID (Fd fd) pgid =
|
||||
throwErrnoIfMinus1_ "setTerminalProcessGroupID" (c_tcsetpgrp fd pgid)
|
||||
|
||||
foreign import ccall unsafe "tcsetpgrp"
|
||||
c_tcsetpgrp :: CInt -> CPid -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- file descriptor queries
|
||||
|
||||
-- | @queryTerminal fd@ calls @isatty@ to determine whether or
|
||||
-- not @Fd@ @fd@ is associated with a terminal.
|
||||
queryTerminal :: Fd -> IO Bool
|
||||
queryTerminal (Fd fd) = do
|
||||
r <- c_isatty fd
|
||||
return (r == 1)
|
||||
-- ToDo: the spec says that it can set errno to EBADF if the result is zero
|
||||
|
||||
foreign import ccall unsafe "isatty"
|
||||
c_isatty :: CInt -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- Local utility functions
|
||||
|
||||
-- Convert Haskell ControlCharacter to Int
|
||||
|
||||
cc2Word :: ControlCharacter -> Int
|
||||
cc2Word EndOfFile = (#const VEOF)
|
||||
cc2Word EndOfLine = (#const VEOL)
|
||||
cc2Word Erase = (#const VERASE)
|
||||
cc2Word Interrupt = (#const VINTR)
|
||||
cc2Word Kill = (#const VKILL)
|
||||
cc2Word Quit = (#const VQUIT)
|
||||
cc2Word Suspend = (#const VSUSP)
|
||||
cc2Word Start = (#const VSTART)
|
||||
cc2Word Stop = (#const VSTOP)
|
||||
|
||||
-- Convert Haskell BaudRate to unsigned integral type (Word)
|
||||
|
||||
baud2Word :: BaudRate -> CSpeed
|
||||
baud2Word B0 = (#const B0)
|
||||
baud2Word B50 = (#const B50)
|
||||
baud2Word B75 = (#const B75)
|
||||
baud2Word B110 = (#const B110)
|
||||
baud2Word B134 = (#const B134)
|
||||
baud2Word B150 = (#const B150)
|
||||
baud2Word B200 = (#const B200)
|
||||
baud2Word B300 = (#const B300)
|
||||
baud2Word B600 = (#const B600)
|
||||
baud2Word B1200 = (#const B1200)
|
||||
baud2Word B1800 = (#const B1800)
|
||||
baud2Word B2400 = (#const B2400)
|
||||
baud2Word B4800 = (#const B4800)
|
||||
baud2Word B9600 = (#const B9600)
|
||||
baud2Word B19200 = (#const B19200)
|
||||
baud2Word B38400 = (#const B38400)
|
||||
#ifdef B57600
|
||||
baud2Word B57600 = (#const B57600)
|
||||
#else
|
||||
baud2Word B57600 = error "B57600 not available on this system"
|
||||
#endif
|
||||
#ifdef B115200
|
||||
baud2Word B115200 = (#const B115200)
|
||||
#else
|
||||
baud2Word B115200 = error "B115200 not available on this system"
|
||||
#endif
|
||||
#ifdef B230400
|
||||
baud2Word B230400 = (#const B230400)
|
||||
#else
|
||||
baud2Word B230400 = error "B230400 not available on this system"
|
||||
#endif
|
||||
#ifdef B460800
|
||||
baud2Word B460800 = (#const B460800)
|
||||
#else
|
||||
baud2Word B460800 = error "B460800 not available on this system"
|
||||
#endif
|
||||
#ifdef B500000
|
||||
baud2Word B500000 = (#const B500000)
|
||||
#else
|
||||
baud2Word B500000 = error "B500000 not available on this system"
|
||||
#endif
|
||||
#ifdef B576000
|
||||
baud2Word B576000 = (#const B576000)
|
||||
#else
|
||||
baud2Word B576000 = error "B576000 not available on this system"
|
||||
#endif
|
||||
#ifdef B921600
|
||||
baud2Word B921600 = (#const B921600)
|
||||
#else
|
||||
baud2Word B921600 = error "B921600 not available on this system"
|
||||
#endif
|
||||
#ifdef B1000000
|
||||
baud2Word B1000000 = (#const B1000000)
|
||||
#else
|
||||
baud2Word B1000000 = error "B1000000 not available on this system"
|
||||
#endif
|
||||
#ifdef B1152000
|
||||
baud2Word B1152000 = (#const B1152000)
|
||||
#else
|
||||
baud2Word B1152000 = error "B1152000 not available on this system"
|
||||
#endif
|
||||
#ifdef B1500000
|
||||
baud2Word B1500000 = (#const B1500000)
|
||||
#else
|
||||
baud2Word B1500000 = error "B1500000 not available on this system"
|
||||
#endif
|
||||
#ifdef B2000000
|
||||
baud2Word B2000000 = (#const B2000000)
|
||||
#else
|
||||
baud2Word B2000000 = error "B2000000 not available on this system"
|
||||
#endif
|
||||
#ifdef B2500000
|
||||
baud2Word B2500000 = (#const B2500000)
|
||||
#else
|
||||
baud2Word B2500000 = error "B2500000 not available on this system"
|
||||
#endif
|
||||
#ifdef B3000000
|
||||
baud2Word B3000000 = (#const B3000000)
|
||||
#else
|
||||
baud2Word B3000000 = error "B3000000 not available on this system"
|
||||
#endif
|
||||
#ifdef B3500000
|
||||
baud2Word B3500000 = (#const B3500000)
|
||||
#else
|
||||
baud2Word B3500000 = error "B3500000 not available on this system"
|
||||
#endif
|
||||
#ifdef B4000000
|
||||
baud2Word B4000000 = (#const B4000000)
|
||||
#else
|
||||
baud2Word B4000000 = error "B4000000 not available on this system"
|
||||
#endif
|
||||
|
||||
-- And convert a word back to a baud rate
|
||||
-- We really need some cpp macros here.
|
||||
|
||||
word2Baud :: CSpeed -> BaudRate
|
||||
word2Baud x = case x of
|
||||
(#const B0) -> B0
|
||||
(#const B50) -> B50
|
||||
(#const B75) -> B75
|
||||
(#const B110) -> B110
|
||||
(#const B134) -> B134
|
||||
(#const B150) -> B150
|
||||
(#const B200) -> B200
|
||||
(#const B300) -> B300
|
||||
(#const B600) -> B600
|
||||
(#const B1200) -> B1200
|
||||
(#const B1800) -> B1800
|
||||
(#const B2400) -> B2400
|
||||
(#const B4800) -> B4800
|
||||
(#const B9600) -> B9600
|
||||
(#const B19200) -> B19200
|
||||
(#const B38400) -> B38400
|
||||
#ifdef B57600
|
||||
(#const B57600) -> B57600
|
||||
#endif
|
||||
#ifdef B115200
|
||||
(#const B115200) -> B115200
|
||||
#endif
|
||||
#ifdef B230400
|
||||
(#const B230400) -> B230400
|
||||
#endif
|
||||
#ifdef B460800
|
||||
(#const B460800) -> B460800
|
||||
#endif
|
||||
#ifdef B500000
|
||||
(#const B500000) -> B500000
|
||||
#endif
|
||||
#ifdef B576000
|
||||
(#const B576000) -> B576000
|
||||
#endif
|
||||
#ifdef B921600
|
||||
(#const B921600) -> B921600
|
||||
#endif
|
||||
#ifdef B1000000
|
||||
(#const B1000000) -> B1000000
|
||||
#endif
|
||||
#ifdef B1152000
|
||||
(#const B1152000) -> B1152000
|
||||
#endif
|
||||
#ifdef B1500000
|
||||
(#const B1500000) -> B1500000
|
||||
#endif
|
||||
#ifdef B2000000
|
||||
(#const B2000000) -> B2000000
|
||||
#endif
|
||||
#ifdef B2500000
|
||||
(#const B2500000) -> B2500000
|
||||
#endif
|
||||
#ifdef B3000000
|
||||
(#const B3000000) -> B3000000
|
||||
#endif
|
||||
#ifdef B3500000
|
||||
(#const B3500000) -> B3500000
|
||||
#endif
|
||||
#ifdef B4000000
|
||||
(#const B4000000) -> B4000000
|
||||
#endif
|
||||
_ -> error "unknown baud rate"
|
||||
|
||||
-- Clear termios i_flag
|
||||
|
||||
clearInputFlag :: CTcflag -> TerminalAttributes -> TerminalAttributes
|
||||
clearInputFlag flag termios = unsafePerformIO $ do
|
||||
fp <- mallocForeignPtrBytes (#const sizeof(struct termios))
|
||||
withForeignPtr fp $ \p1 -> do
|
||||
withTerminalAttributes termios $ \p2 -> do
|
||||
copyBytes p1 p2 (#const sizeof(struct termios))
|
||||
iflag <- (#peek struct termios, c_iflag) p2
|
||||
(#poke struct termios, c_iflag) p1 (iflag .&. complement flag)
|
||||
return $ makeTerminalAttributes fp
|
||||
|
||||
-- Set termios i_flag
|
||||
|
||||
setInputFlag :: CTcflag -> TerminalAttributes -> TerminalAttributes
|
||||
setInputFlag flag termios = unsafePerformIO $ do
|
||||
fp <- mallocForeignPtrBytes (#const sizeof(struct termios))
|
||||
withForeignPtr fp $ \p1 -> do
|
||||
withTerminalAttributes termios $ \p2 -> do
|
||||
copyBytes p1 p2 (#const sizeof(struct termios))
|
||||
iflag <- (#peek struct termios, c_iflag) p2
|
||||
(#poke struct termios, c_iflag) p1 (iflag .|. flag)
|
||||
return $ makeTerminalAttributes fp
|
||||
|
||||
-- Examine termios i_flag
|
||||
|
||||
testInputFlag :: CTcflag -> TerminalAttributes -> Bool
|
||||
testInputFlag flag termios = unsafePerformIO $
|
||||
withTerminalAttributes termios $ \p -> do
|
||||
iflag <- (#peek struct termios, c_iflag) p
|
||||
return $! ((iflag .&. flag) /= 0)
|
||||
|
||||
-- Clear termios c_flag
|
||||
|
||||
clearControlFlag :: CTcflag -> TerminalAttributes -> TerminalAttributes
|
||||
clearControlFlag flag termios = unsafePerformIO $ do
|
||||
fp <- mallocForeignPtrBytes (#const sizeof(struct termios))
|
||||
withForeignPtr fp $ \p1 -> do
|
||||
withTerminalAttributes termios $ \p2 -> do
|
||||
copyBytes p1 p2 (#const sizeof(struct termios))
|
||||
cflag <- (#peek struct termios, c_cflag) p2
|
||||
(#poke struct termios, c_cflag) p1 (cflag .&. complement flag)
|
||||
return $ makeTerminalAttributes fp
|
||||
|
||||
-- Set termios c_flag
|
||||
|
||||
setControlFlag :: CTcflag -> TerminalAttributes -> TerminalAttributes
|
||||
setControlFlag flag termios = unsafePerformIO $ do
|
||||
fp <- mallocForeignPtrBytes (#const sizeof(struct termios))
|
||||
withForeignPtr fp $ \p1 -> do
|
||||
withTerminalAttributes termios $ \p2 -> do
|
||||
copyBytes p1 p2 (#const sizeof(struct termios))
|
||||
cflag <- (#peek struct termios, c_cflag) p2
|
||||
(#poke struct termios, c_cflag) p1 (cflag .|. flag)
|
||||
return $ makeTerminalAttributes fp
|
||||
|
||||
-- Examine termios c_flag
|
||||
|
||||
testControlFlag :: CTcflag -> TerminalAttributes -> Bool
|
||||
testControlFlag flag termios = unsafePerformIO $
|
||||
withTerminalAttributes termios $ \p -> do
|
||||
cflag <- (#peek struct termios, c_cflag) p
|
||||
return $! ((cflag .&. flag) /= 0)
|
||||
|
||||
-- Clear termios l_flag
|
||||
|
||||
clearLocalFlag :: CTcflag -> TerminalAttributes -> TerminalAttributes
|
||||
clearLocalFlag flag termios = unsafePerformIO $ do
|
||||
fp <- mallocForeignPtrBytes (#const sizeof(struct termios))
|
||||
withForeignPtr fp $ \p1 -> do
|
||||
withTerminalAttributes termios $ \p2 -> do
|
||||
copyBytes p1 p2 (#const sizeof(struct termios))
|
||||
lflag <- (#peek struct termios, c_lflag) p2
|
||||
(#poke struct termios, c_lflag) p1 (lflag .&. complement flag)
|
||||
return $ makeTerminalAttributes fp
|
||||
|
||||
-- Set termios l_flag
|
||||
|
||||
setLocalFlag :: CTcflag -> TerminalAttributes -> TerminalAttributes
|
||||
setLocalFlag flag termios = unsafePerformIO $ do
|
||||
fp <- mallocForeignPtrBytes (#const sizeof(struct termios))
|
||||
withForeignPtr fp $ \p1 -> do
|
||||
withTerminalAttributes termios $ \p2 -> do
|
||||
copyBytes p1 p2 (#const sizeof(struct termios))
|
||||
lflag <- (#peek struct termios, c_lflag) p2
|
||||
(#poke struct termios, c_lflag) p1 (lflag .|. flag)
|
||||
return $ makeTerminalAttributes fp
|
||||
|
||||
-- Examine termios l_flag
|
||||
|
||||
testLocalFlag :: CTcflag -> TerminalAttributes -> Bool
|
||||
testLocalFlag flag termios = unsafePerformIO $
|
||||
withTerminalAttributes termios $ \p -> do
|
||||
lflag <- (#peek struct termios, c_lflag) p
|
||||
return $! ((lflag .&. flag) /= 0)
|
||||
|
||||
-- Clear termios o_flag
|
||||
|
||||
clearOutputFlag :: CTcflag -> TerminalAttributes -> TerminalAttributes
|
||||
clearOutputFlag flag termios = unsafePerformIO $ do
|
||||
fp <- mallocForeignPtrBytes (#const sizeof(struct termios))
|
||||
withForeignPtr fp $ \p1 -> do
|
||||
withTerminalAttributes termios $ \p2 -> do
|
||||
copyBytes p1 p2 (#const sizeof(struct termios))
|
||||
oflag <- (#peek struct termios, c_oflag) p2
|
||||
(#poke struct termios, c_oflag) p1 (oflag .&. complement flag)
|
||||
return $ makeTerminalAttributes fp
|
||||
|
||||
-- Set termios o_flag
|
||||
|
||||
setOutputFlag :: CTcflag -> TerminalAttributes -> TerminalAttributes
|
||||
setOutputFlag flag termios = unsafePerformIO $ do
|
||||
fp <- mallocForeignPtrBytes (#const sizeof(struct termios))
|
||||
withForeignPtr fp $ \p1 -> do
|
||||
withTerminalAttributes termios $ \p2 -> do
|
||||
copyBytes p1 p2 (#const sizeof(struct termios))
|
||||
oflag <- (#peek struct termios, c_oflag) p2
|
||||
(#poke struct termios, c_oflag) p1 (oflag .|. flag)
|
||||
return $ makeTerminalAttributes fp
|
||||
|
||||
-- Examine termios o_flag
|
||||
|
||||
testOutputFlag :: CTcflag -> TerminalAttributes -> Bool
|
||||
testOutputFlag flag termios = unsafePerformIO $
|
||||
withTerminalAttributes termios $ \p -> do
|
||||
oflag <- (#peek struct termios, c_oflag) p
|
||||
return $! ((oflag .&. flag) /= 0)
|
||||
|
||||
withNewTermios :: TerminalAttributes -> (Ptr CTermios -> IO a)
|
||||
-> IO TerminalAttributes
|
||||
withNewTermios termios action = do
|
||||
fp1 <- mallocForeignPtrBytes (#const sizeof(struct termios))
|
||||
withForeignPtr fp1 $ \p1 -> do
|
||||
withTerminalAttributes termios $ \p2 -> do
|
||||
copyBytes p1 p2 (#const sizeof(struct termios))
|
||||
_ <- action p1
|
||||
return ()
|
||||
return $ makeTerminalAttributes fp1
|
@ -1,41 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
{-# LANGUAGE CPP #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Time
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX Time support
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.Time (
|
||||
epochTime,
|
||||
-- ToDo: lots more from sys/time.h
|
||||
-- how much already supported by System.Time?
|
||||
) where
|
||||
|
||||
import System.Posix.Types
|
||||
import Foreign
|
||||
import Foreign.C
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- epochTime
|
||||
|
||||
-- | @epochTime@ calls @time@ to obtain the number of
|
||||
-- seconds that have elapsed since the epoch (Jan 01 00:00:00 GMT 1970).
|
||||
epochTime :: IO EpochTime
|
||||
epochTime = throwErrnoIfMinus1 "epochTime" (c_time nullPtr)
|
||||
|
||||
foreign import capi unsafe "HsUnix.h time"
|
||||
c_time :: Ptr CTime -> IO CTime
|
@ -1,264 +0,0 @@
|
||||
{-# LANGUAGE CApiFFI #-}
|
||||
{-# LANGUAGE NondecreasingIndentation #-}
|
||||
#if __GLASGOW_HASKELL__ >= 709
|
||||
{-# LANGUAGE Safe #-}
|
||||
#else
|
||||
{-# LANGUAGE Trustworthy #-}
|
||||
#endif
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.Unistd
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX miscellaneous stuff, mostly from unistd.h
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.Unistd (
|
||||
-- * System environment
|
||||
SystemID(..),
|
||||
getSystemID,
|
||||
|
||||
SysVar(..),
|
||||
getSysVar,
|
||||
|
||||
-- * Sleeping
|
||||
sleep, usleep, nanosleep,
|
||||
|
||||
-- * File synchronisation
|
||||
fileSynchronise,
|
||||
fileSynchroniseDataOnly,
|
||||
|
||||
{-
|
||||
ToDo from unistd.h:
|
||||
confstr,
|
||||
lots of sysconf variables
|
||||
|
||||
-- use Network.BSD
|
||||
gethostid, gethostname
|
||||
|
||||
-- should be in System.Posix.Files?
|
||||
pathconf, fpathconf,
|
||||
|
||||
-- System.Posix.Signals
|
||||
ualarm,
|
||||
|
||||
-- System.Posix.IO
|
||||
read, write,
|
||||
|
||||
-- should be in System.Posix.User?
|
||||
getEffectiveUserName,
|
||||
-}
|
||||
) where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import Foreign.C.Error
|
||||
import Foreign.C.String ( peekCString )
|
||||
import Foreign.C.Types
|
||||
import Foreign
|
||||
import System.Posix.Types
|
||||
import System.Posix.Internals
|
||||
|
||||
#if !(HAVE_FSYNC && HAVE_FDATASYNC)
|
||||
import System.IO.Error ( ioeSetLocation )
|
||||
import GHC.IO.Exception ( unsupportedOperation )
|
||||
#endif
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- System environment (uname())
|
||||
|
||||
data SystemID =
|
||||
SystemID { systemName :: String
|
||||
, nodeName :: String
|
||||
, release :: String
|
||||
, version :: String
|
||||
, machine :: String
|
||||
}
|
||||
|
||||
getSystemID :: IO SystemID
|
||||
getSystemID = do
|
||||
allocaBytes (#const sizeof(struct utsname)) $ \p_sid -> do
|
||||
throwErrnoIfMinus1_ "getSystemID" (c_uname p_sid)
|
||||
sysN <- peekCString ((#ptr struct utsname, sysname) p_sid)
|
||||
node <- peekCString ((#ptr struct utsname, nodename) p_sid)
|
||||
rel <- peekCString ((#ptr struct utsname, release) p_sid)
|
||||
ver <- peekCString ((#ptr struct utsname, version) p_sid)
|
||||
mach <- peekCString ((#ptr struct utsname, machine) p_sid)
|
||||
return (SystemID { systemName = sysN,
|
||||
nodeName = node,
|
||||
release = rel,
|
||||
version = ver,
|
||||
machine = mach
|
||||
})
|
||||
|
||||
foreign import ccall unsafe "uname"
|
||||
c_uname :: Ptr CUtsname -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- sleeping
|
||||
|
||||
-- | Sleep for the specified duration (in seconds). Returns the time remaining
|
||||
-- (if the sleep was interrupted by a signal, for example).
|
||||
--
|
||||
-- /GHC Note/: 'Control.Concurrent.threadDelay' is a better choice. Since GHC
|
||||
-- uses signals for its internal clock, a call to 'sleep' will usually be
|
||||
-- interrupted immediately. That makes 'sleep' unusable in a program compiled
|
||||
-- with GHC, unless the RTS timer is disabled (with @+RTS -V0@). Furthermore,
|
||||
-- without the @-threaded@ option, 'sleep' will block all other user threads.
|
||||
-- Even with the @-threaded@ option, 'sleep' requires a full OS thread to
|
||||
-- itself. 'Control.Concurrent.threadDelay' has none of these shortcomings.
|
||||
--
|
||||
sleep :: Int -> IO Int
|
||||
sleep 0 = return 0
|
||||
sleep secs = do r <- c_sleep (fromIntegral secs); return (fromIntegral r)
|
||||
|
||||
{-# WARNING sleep "This function has several shortcomings (see documentation). Please consider using Control.Concurrent.threadDelay instead." #-}
|
||||
|
||||
foreign import ccall safe "sleep"
|
||||
c_sleep :: CUInt -> IO CUInt
|
||||
|
||||
-- | Sleep for the specified duration (in microseconds).
|
||||
--
|
||||
-- /GHC Note/: 'Control.Concurrent.threadDelay' is a better choice.
|
||||
-- Without the @-threaded@ option, 'usleep' will block all other user
|
||||
-- threads. Even with the @-threaded@ option, 'usleep' requires a
|
||||
-- full OS thread to itself. 'Control.Concurrent.threadDelay' has
|
||||
-- neither of these shortcomings.
|
||||
--
|
||||
usleep :: Int -> IO ()
|
||||
#ifdef HAVE_NANOSLEEP
|
||||
usleep usecs = nanosleep (fromIntegral usecs * 1000)
|
||||
#else
|
||||
usleep 0 = return ()
|
||||
#ifdef USLEEP_RETURNS_VOID
|
||||
usleep usecs = c_usleep (fromIntegral usecs)
|
||||
#else
|
||||
usleep usecs = throwErrnoIfMinus1_ "usleep" (c_usleep (fromIntegral usecs))
|
||||
#endif
|
||||
|
||||
#ifdef USLEEP_RETURNS_VOID
|
||||
foreign import ccall safe "usleep"
|
||||
c_usleep :: CUInt -> IO ()
|
||||
#else
|
||||
foreign import ccall safe "usleep"
|
||||
c_usleep :: CUInt -> IO CInt
|
||||
#endif
|
||||
#endif /* HAVE_NANOSLEEP */
|
||||
|
||||
-- | Sleep for the specified duration (in nanoseconds)
|
||||
--
|
||||
-- /GHC Note/: the comment for 'usleep' also applies here.
|
||||
nanosleep :: Integer -> IO ()
|
||||
#ifndef HAVE_NANOSLEEP
|
||||
nanosleep = error "nanosleep: not available on this platform"
|
||||
#else
|
||||
nanosleep 0 = return ()
|
||||
nanosleep nsecs = do
|
||||
allocaBytes (#const sizeof(struct timespec)) $ \pts1 -> do
|
||||
allocaBytes (#const sizeof(struct timespec)) $ \pts2 -> do
|
||||
let (tv_sec0, tv_nsec0) = nsecs `divMod` 1000000000
|
||||
let
|
||||
loop tv_sec tv_nsec = do
|
||||
(#poke struct timespec, tv_sec) pts1 tv_sec
|
||||
(#poke struct timespec, tv_nsec) pts1 tv_nsec
|
||||
res <- c_nanosleep pts1 pts2
|
||||
if res == 0
|
||||
then return ()
|
||||
else do errno <- getErrno
|
||||
if errno == eINTR
|
||||
then do
|
||||
tv_sec' <- (#peek struct timespec, tv_sec) pts2
|
||||
tv_nsec' <- (#peek struct timespec, tv_nsec) pts2
|
||||
loop tv_sec' tv_nsec'
|
||||
else throwErrno "nanosleep"
|
||||
loop (fromIntegral tv_sec0 :: CTime) (fromIntegral tv_nsec0 :: CTime)
|
||||
|
||||
data {-# CTYPE "struct timespec" #-} CTimeSpec
|
||||
|
||||
foreign import capi safe "HsUnix.h nanosleep"
|
||||
c_nanosleep :: Ptr CTimeSpec -> Ptr CTimeSpec -> IO CInt
|
||||
#endif
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- System variables
|
||||
|
||||
data SysVar = ArgumentLimit
|
||||
| ChildLimit
|
||||
| ClockTick
|
||||
| GroupLimit
|
||||
| OpenFileLimit
|
||||
| PosixVersion
|
||||
| HasSavedIDs
|
||||
| HasJobControl
|
||||
-- ToDo: lots more
|
||||
|
||||
getSysVar :: SysVar -> IO Integer
|
||||
getSysVar v =
|
||||
case v of
|
||||
ArgumentLimit -> sysconf (#const _SC_ARG_MAX)
|
||||
ChildLimit -> sysconf (#const _SC_CHILD_MAX)
|
||||
ClockTick -> sysconf (#const _SC_CLK_TCK)
|
||||
GroupLimit -> sysconf (#const _SC_NGROUPS_MAX)
|
||||
OpenFileLimit -> sysconf (#const _SC_OPEN_MAX)
|
||||
PosixVersion -> sysconf (#const _SC_VERSION)
|
||||
HasSavedIDs -> sysconf (#const _SC_SAVED_IDS)
|
||||
HasJobControl -> sysconf (#const _SC_JOB_CONTROL)
|
||||
|
||||
sysconf :: CInt -> IO Integer
|
||||
sysconf n = do
|
||||
r <- throwErrnoIfMinus1 "getSysVar" (c_sysconf n)
|
||||
return (fromIntegral r)
|
||||
|
||||
foreign import ccall unsafe "sysconf"
|
||||
c_sysconf :: CInt -> IO CLong
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- File synchronization
|
||||
|
||||
-- | Performs @fsync(2)@ operation on file-descriptor.
|
||||
--
|
||||
-- Throws 'IOError' (\"unsupported operation\") if platform does not
|
||||
-- provide @fsync(2)@ (use @#if HAVE_FSYNC@ CPP guard to
|
||||
-- detect availability).
|
||||
--
|
||||
-- @since 2.7.1.0
|
||||
fileSynchronise :: Fd -> IO ()
|
||||
#if HAVE_FSYNC
|
||||
fileSynchronise fd = do
|
||||
throwErrnoIfMinus1_ "fileSynchronise" (c_fsync fd)
|
||||
|
||||
foreign import capi safe "unistd.h fsync"
|
||||
c_fsync :: Fd -> IO CInt
|
||||
#else
|
||||
{-# WARNING fileSynchronise
|
||||
"operation will throw 'IOError' \"unsupported operation\" (CPP guard: @#if HAVE_FSYNC@)" #-}
|
||||
fileSynchronise _ = ioError (ioeSetLocation unsupportedOperation
|
||||
"fileSynchronise")
|
||||
#endif
|
||||
|
||||
-- | Performs @fdatasync(2)@ operation on file-descriptor.
|
||||
--
|
||||
-- Throws 'IOError' (\"unsupported operation\") if platform does not
|
||||
-- provide @fdatasync(2)@ (use @#if HAVE_FDATASYNC@ CPP guard to
|
||||
-- detect availability).
|
||||
--
|
||||
-- @since 2.7.1.0
|
||||
fileSynchroniseDataOnly :: Fd -> IO ()
|
||||
#if HAVE_FDATASYNC
|
||||
fileSynchroniseDataOnly fd = do
|
||||
throwErrnoIfMinus1_ "fileSynchroniseDataOnly" (c_fdatasync fd)
|
||||
|
||||
foreign import capi safe "unistd.h fdatasync"
|
||||
c_fdatasync :: Fd -> IO CInt
|
||||
#else
|
||||
{-# WARNING fileSynchroniseDataOnly
|
||||
"operation will throw 'IOError' \"unsupported operation\" (CPP guard: @#if HAVE_FDATASYNC@)" #-}
|
||||
fileSynchroniseDataOnly _ = ioError (ioeSetLocation unsupportedOperation
|
||||
"fileSynchroniseDataOnly")
|
||||
#endif
|
@ -1,474 +0,0 @@
|
||||
{-# LANGUAGE Trustworthy, CApiFFI #-}
|
||||
-----------------------------------------------------------------------------
|
||||
-- |
|
||||
-- Module : System.Posix.User
|
||||
-- Copyright : (c) The University of Glasgow 2002
|
||||
-- License : BSD-style (see the file libraries/base/LICENSE)
|
||||
--
|
||||
-- Maintainer : libraries@haskell.org
|
||||
-- Stability : provisional
|
||||
-- Portability : non-portable (requires POSIX)
|
||||
--
|
||||
-- POSIX user\/group support
|
||||
--
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
module System.Posix.User (
|
||||
-- * User environment
|
||||
-- ** Querying the user environment
|
||||
getRealUserID,
|
||||
getRealGroupID,
|
||||
getEffectiveUserID,
|
||||
getEffectiveGroupID,
|
||||
getGroups,
|
||||
getLoginName,
|
||||
getEffectiveUserName,
|
||||
|
||||
-- *** The group database
|
||||
GroupEntry(..),
|
||||
getGroupEntryForID,
|
||||
getGroupEntryForName,
|
||||
getAllGroupEntries,
|
||||
|
||||
-- *** The user database
|
||||
UserEntry(..),
|
||||
getUserEntryForID,
|
||||
getUserEntryForName,
|
||||
getAllUserEntries,
|
||||
|
||||
-- ** Modifying the user environment
|
||||
setUserID,
|
||||
setGroupID,
|
||||
setEffectiveUserID,
|
||||
setEffectiveGroupID,
|
||||
setGroups
|
||||
|
||||
) where
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
import System.Posix.Types
|
||||
import System.IO.Unsafe (unsafePerformIO)
|
||||
import Foreign.C
|
||||
import Foreign.Ptr
|
||||
import Foreign.Marshal
|
||||
import Foreign.Storable
|
||||
|
||||
#if !defined(HAVE_GETPWNAM_R) || !defined(HAVE_GETPWUID_R) || defined(HAVE_GETPWENT) || defined(HAVE_GETGRENT)
|
||||
import Control.Concurrent.MVar ( MVar, newMVar, withMVar )
|
||||
#endif
|
||||
#ifdef HAVE_GETPWENT
|
||||
import Control.Exception
|
||||
#endif
|
||||
import Control.Monad
|
||||
import System.IO.Error
|
||||
|
||||
-- internal types
|
||||
data {-# CTYPE "struct passwd" #-} CPasswd
|
||||
data {-# CTYPE "struct group" #-} CGroup
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- user environment
|
||||
|
||||
-- | @getRealUserID@ calls @getuid@ to obtain the real @UserID@
|
||||
-- associated with the current process.
|
||||
getRealUserID :: IO UserID
|
||||
getRealUserID = c_getuid
|
||||
|
||||
foreign import ccall unsafe "getuid"
|
||||
c_getuid :: IO CUid
|
||||
|
||||
-- | @getRealGroupID@ calls @getgid@ to obtain the real @GroupID@
|
||||
-- associated with the current process.
|
||||
getRealGroupID :: IO GroupID
|
||||
getRealGroupID = c_getgid
|
||||
|
||||
foreign import ccall unsafe "getgid"
|
||||
c_getgid :: IO CGid
|
||||
|
||||
-- | @getEffectiveUserID@ calls @geteuid@ to obtain the effective
|
||||
-- @UserID@ associated with the current process.
|
||||
getEffectiveUserID :: IO UserID
|
||||
getEffectiveUserID = c_geteuid
|
||||
|
||||
foreign import ccall unsafe "geteuid"
|
||||
c_geteuid :: IO CUid
|
||||
|
||||
-- | @getEffectiveGroupID@ calls @getegid@ to obtain the effective
|
||||
-- @GroupID@ associated with the current process.
|
||||
getEffectiveGroupID :: IO GroupID
|
||||
getEffectiveGroupID = c_getegid
|
||||
|
||||
foreign import ccall unsafe "getegid"
|
||||
c_getegid :: IO CGid
|
||||
|
||||
-- | @getGroups@ calls @getgroups@ to obtain the list of
|
||||
-- supplementary @GroupID@s associated with the current process.
|
||||
getGroups :: IO [GroupID]
|
||||
getGroups = do
|
||||
ngroups <- c_getgroups 0 nullPtr
|
||||
allocaArray (fromIntegral ngroups) $ \arr -> do
|
||||
throwErrnoIfMinus1_ "getGroups" (c_getgroups ngroups arr)
|
||||
groups <- peekArray (fromIntegral ngroups) arr
|
||||
return groups
|
||||
|
||||
foreign import ccall unsafe "getgroups"
|
||||
c_getgroups :: CInt -> Ptr CGid -> IO CInt
|
||||
|
||||
|
||||
-- | @setGroups@ calls @setgroups@ to set the list of
|
||||
-- supplementary @GroupID@s associated with the current process.
|
||||
setGroups :: [GroupID] -> IO ()
|
||||
setGroups groups = do
|
||||
withArrayLen groups $ \ ngroups arr ->
|
||||
throwErrnoIfMinus1_ "setGroups" (c_setgroups (fromIntegral ngroups) arr)
|
||||
|
||||
foreign import ccall unsafe "setgroups"
|
||||
c_setgroups :: CInt -> Ptr CGid -> IO CInt
|
||||
|
||||
|
||||
|
||||
-- | @getLoginName@ calls @getlogin@ to obtain the login name
|
||||
-- associated with the current process.
|
||||
getLoginName :: IO String
|
||||
getLoginName = do
|
||||
-- ToDo: use getlogin_r
|
||||
str <- throwErrnoIfNull "getLoginName" c_getlogin
|
||||
peekCAString str
|
||||
|
||||
foreign import ccall unsafe "getlogin"
|
||||
c_getlogin :: IO CString
|
||||
|
||||
-- | @setUserID uid@ calls @setuid@ to set the real, effective, and
|
||||
-- saved set-user-id associated with the current process to @uid@.
|
||||
setUserID :: UserID -> IO ()
|
||||
setUserID uid = throwErrnoIfMinus1_ "setUserID" (c_setuid uid)
|
||||
|
||||
foreign import ccall unsafe "setuid"
|
||||
c_setuid :: CUid -> IO CInt
|
||||
|
||||
-- | @setEffectiveUserID uid@ calls @seteuid@ to set the effective
|
||||
-- user-id associated with the current process to @uid@. This
|
||||
-- does not update the real user-id or set-user-id.
|
||||
setEffectiveUserID :: UserID -> IO ()
|
||||
setEffectiveUserID uid = throwErrnoIfMinus1_ "setEffectiveUserID" (c_seteuid uid)
|
||||
|
||||
foreign import ccall unsafe "seteuid"
|
||||
c_seteuid :: CUid -> IO CInt
|
||||
|
||||
-- | @setGroupID gid@ calls @setgid@ to set the real, effective, and
|
||||
-- saved set-group-id associated with the current process to @gid@.
|
||||
setGroupID :: GroupID -> IO ()
|
||||
setGroupID gid = throwErrnoIfMinus1_ "setGroupID" (c_setgid gid)
|
||||
|
||||
foreign import ccall unsafe "setgid"
|
||||
c_setgid :: CGid -> IO CInt
|
||||
|
||||
-- | @setEffectiveGroupID uid@ calls @setegid@ to set the effective
|
||||
-- group-id associated with the current process to @gid@. This
|
||||
-- does not update the real group-id or set-group-id.
|
||||
setEffectiveGroupID :: GroupID -> IO ()
|
||||
setEffectiveGroupID gid =
|
||||
throwErrnoIfMinus1_ "setEffectiveGroupID" (c_setegid gid)
|
||||
|
||||
|
||||
foreign import ccall unsafe "setegid"
|
||||
c_setegid :: CGid -> IO CInt
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- User names
|
||||
|
||||
-- | @getEffectiveUserName@ gets the name
|
||||
-- associated with the effective @UserID@ of the process.
|
||||
getEffectiveUserName :: IO String
|
||||
getEffectiveUserName = do
|
||||
euid <- getEffectiveUserID
|
||||
pw <- getUserEntryForID euid
|
||||
return (userName pw)
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- The group database (grp.h)
|
||||
|
||||
data GroupEntry =
|
||||
GroupEntry {
|
||||
groupName :: String, -- ^ The name of this group (gr_name)
|
||||
groupPassword :: String, -- ^ The password for this group (gr_passwd)
|
||||
groupID :: GroupID, -- ^ The unique numeric ID for this group (gr_gid)
|
||||
groupMembers :: [String] -- ^ A list of zero or more usernames that are members (gr_mem)
|
||||
} deriving (Show, Read, Eq)
|
||||
|
||||
-- | @getGroupEntryForID gid@ calls @getgrgid_r@ to obtain
|
||||
-- the @GroupEntry@ information associated with @GroupID@
|
||||
-- @gid@. This operation may fail with 'isDoesNotExistError'
|
||||
-- if no such group exists.
|
||||
getGroupEntryForID :: GroupID -> IO GroupEntry
|
||||
#ifdef HAVE_GETGRGID_R
|
||||
getGroupEntryForID gid =
|
||||
allocaBytes (#const sizeof(struct group)) $ \pgr ->
|
||||
doubleAllocWhileERANGE "getGroupEntryForID" "group" grBufSize unpackGroupEntry $
|
||||
c_getgrgid_r gid pgr
|
||||
|
||||
foreign import capi unsafe "HsUnix.h getgrgid_r"
|
||||
c_getgrgid_r :: CGid -> Ptr CGroup -> CString
|
||||
-> CSize -> Ptr (Ptr CGroup) -> IO CInt
|
||||
#else
|
||||
getGroupEntryForID = error "System.Posix.User.getGroupEntryForID: not supported"
|
||||
#endif
|
||||
|
||||
-- | @getGroupEntryForName name@ calls @getgrnam_r@ to obtain
|
||||
-- the @GroupEntry@ information associated with the group called
|
||||
-- @name@. This operation may fail with 'isDoesNotExistError'
|
||||
-- if no such group exists.
|
||||
getGroupEntryForName :: String -> IO GroupEntry
|
||||
#ifdef HAVE_GETGRNAM_R
|
||||
getGroupEntryForName name =
|
||||
allocaBytes (#const sizeof(struct group)) $ \pgr ->
|
||||
withCAString name $ \ pstr ->
|
||||
doubleAllocWhileERANGE "getGroupEntryForName" "group" grBufSize unpackGroupEntry $
|
||||
c_getgrnam_r pstr pgr
|
||||
|
||||
foreign import capi unsafe "HsUnix.h getgrnam_r"
|
||||
c_getgrnam_r :: CString -> Ptr CGroup -> CString
|
||||
-> CSize -> Ptr (Ptr CGroup) -> IO CInt
|
||||
#else
|
||||
getGroupEntryForName = error "System.Posix.User.getGroupEntryForName: not supported"
|
||||
#endif
|
||||
|
||||
-- | @getAllGroupEntries@ returns all group entries on the system by
|
||||
-- repeatedly calling @getgrent@
|
||||
|
||||
--
|
||||
-- getAllGroupEntries may fail with isDoesNotExistError on Linux due to
|
||||
-- this bug in glibc:
|
||||
-- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=466647
|
||||
--
|
||||
getAllGroupEntries :: IO [GroupEntry]
|
||||
#ifdef HAVE_GETGRENT
|
||||
getAllGroupEntries =
|
||||
withMVar lock $ \_ -> bracket_ c_setgrent c_endgrent $ worker []
|
||||
where worker accum =
|
||||
do resetErrno
|
||||
ppw <- throwErrnoIfNullAndError "getAllGroupEntries" $
|
||||
c_getgrent
|
||||
if ppw == nullPtr
|
||||
then return (reverse accum)
|
||||
else do thisentry <- unpackGroupEntry ppw
|
||||
worker (thisentry : accum)
|
||||
|
||||
foreign import ccall unsafe "getgrent"
|
||||
c_getgrent :: IO (Ptr CGroup)
|
||||
foreign import ccall unsafe "setgrent"
|
||||
c_setgrent :: IO ()
|
||||
foreign import ccall unsafe "endgrent"
|
||||
c_endgrent :: IO ()
|
||||
#else
|
||||
getAllGroupEntries = error "System.Posix.User.getAllGroupEntries: not supported"
|
||||
#endif
|
||||
|
||||
#if defined(HAVE_GETGRGID_R) || defined(HAVE_GETGRNAM_R)
|
||||
grBufSize :: Int
|
||||
#if defined(HAVE_SYSCONF) && defined(HAVE_SC_GETGR_R_SIZE_MAX)
|
||||
grBufSize = sysconfWithDefault 1024 (#const _SC_GETGR_R_SIZE_MAX)
|
||||
#else
|
||||
grBufSize = 1024
|
||||
#endif
|
||||
#endif
|
||||
|
||||
unpackGroupEntry :: Ptr CGroup -> IO GroupEntry
|
||||
unpackGroupEntry ptr = do
|
||||
name <- (#peek struct group, gr_name) ptr >>= peekCAString
|
||||
passwd <- (#peek struct group, gr_passwd) ptr >>= peekCAString
|
||||
gid <- (#peek struct group, gr_gid) ptr
|
||||
mem <- (#peek struct group, gr_mem) ptr
|
||||
members <- peekArray0 nullPtr mem >>= mapM peekCAString
|
||||
return (GroupEntry name passwd gid members)
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
-- The user database (pwd.h)
|
||||
|
||||
data UserEntry =
|
||||
UserEntry {
|
||||
userName :: String, -- ^ Textual name of this user (pw_name)
|
||||
userPassword :: String, -- ^ Password -- may be empty or fake if shadow is in use (pw_passwd)
|
||||
userID :: UserID, -- ^ Numeric ID for this user (pw_uid)
|
||||
userGroupID :: GroupID, -- ^ Primary group ID (pw_gid)
|
||||
userGecos :: String, -- ^ Usually the real name for the user (pw_gecos)
|
||||
homeDirectory :: String, -- ^ Home directory (pw_dir)
|
||||
userShell :: String -- ^ Default shell (pw_shell)
|
||||
} deriving (Show, Read, Eq)
|
||||
|
||||
--
|
||||
-- getpwuid and getpwnam leave results in a static object. Subsequent
|
||||
-- calls modify the same object, which isn't threadsafe. We attempt to
|
||||
-- mitigate this issue, on platforms that don't provide the safe _r versions
|
||||
--
|
||||
-- Also, getpwent/setpwent require a global lock since they maintain
|
||||
-- an internal file position pointer.
|
||||
#if !defined(HAVE_GETPWNAM_R) || !defined(HAVE_GETPWUID_R) || defined(HAVE_GETPWENT) || defined(HAVE_GETGRENT)
|
||||
lock :: MVar ()
|
||||
lock = unsafePerformIO $ newMVar ()
|
||||
{-# NOINLINE lock #-}
|
||||
#endif
|
||||
|
||||
-- | @getUserEntryForID gid@ calls @getpwuid_r@ to obtain
|
||||
-- the @UserEntry@ information associated with @UserID@
|
||||
-- @uid@. This operation may fail with 'isDoesNotExistError'
|
||||
-- if no such user exists.
|
||||
getUserEntryForID :: UserID -> IO UserEntry
|
||||
#ifdef HAVE_GETPWUID_R
|
||||
getUserEntryForID uid =
|
||||
allocaBytes (#const sizeof(struct passwd)) $ \ppw ->
|
||||
doubleAllocWhileERANGE "getUserEntryForID" "user" pwBufSize unpackUserEntry $
|
||||
c_getpwuid_r uid ppw
|
||||
|
||||
foreign import capi unsafe "HsUnix.h getpwuid_r"
|
||||
c_getpwuid_r :: CUid -> Ptr CPasswd ->
|
||||
CString -> CSize -> Ptr (Ptr CPasswd) -> IO CInt
|
||||
#elif HAVE_GETPWUID
|
||||
getUserEntryForID uid = do
|
||||
withMVar lock $ \_ -> do
|
||||
ppw <- throwErrnoIfNull "getUserEntryForID" $ c_getpwuid uid
|
||||
unpackUserEntry ppw
|
||||
|
||||
foreign import ccall unsafe "getpwuid"
|
||||
c_getpwuid :: CUid -> IO (Ptr CPasswd)
|
||||
#else
|
||||
getUserEntryForID = error "System.Posix.User.getUserEntryForID: not supported"
|
||||
#endif
|
||||
|
||||
-- | @getUserEntryForName name@ calls @getpwnam_r@ to obtain
|
||||
-- the @UserEntry@ information associated with the user login
|
||||
-- @name@. This operation may fail with 'isDoesNotExistError'
|
||||
-- if no such user exists.
|
||||
getUserEntryForName :: String -> IO UserEntry
|
||||
#if HAVE_GETPWNAM_R
|
||||
getUserEntryForName name =
|
||||
allocaBytes (#const sizeof(struct passwd)) $ \ppw ->
|
||||
withCAString name $ \ pstr ->
|
||||
doubleAllocWhileERANGE "getUserEntryForName" "user" pwBufSize unpackUserEntry $
|
||||
c_getpwnam_r pstr ppw
|
||||
|
||||
foreign import capi unsafe "HsUnix.h getpwnam_r"
|
||||
c_getpwnam_r :: CString -> Ptr CPasswd
|
||||
-> CString -> CSize -> Ptr (Ptr CPasswd) -> IO CInt
|
||||
#elif HAVE_GETPWNAM
|
||||
getUserEntryForName name = do
|
||||
withCAString name $ \ pstr -> do
|
||||
withMVar lock $ \_ -> do
|
||||
ppw <- throwErrnoIfNull "getUserEntryForName" $ c_getpwnam pstr
|
||||
unpackUserEntry ppw
|
||||
|
||||
foreign import ccall unsafe "getpwnam"
|
||||
c_getpwnam :: CString -> IO (Ptr CPasswd)
|
||||
#else
|
||||
getUserEntryForName = error "System.Posix.User.getUserEntryForName: not supported"
|
||||
#endif
|
||||
|
||||
-- | @getAllUserEntries@ returns all user entries on the system by
|
||||
-- repeatedly calling @getpwent@
|
||||
getAllUserEntries :: IO [UserEntry]
|
||||
#ifdef HAVE_GETPWENT
|
||||
getAllUserEntries =
|
||||
withMVar lock $ \_ -> bracket_ c_setpwent c_endpwent $ worker []
|
||||
where worker accum =
|
||||
do resetErrno
|
||||
ppw <- throwErrnoIfNullAndError "getAllUserEntries" $
|
||||
c_getpwent
|
||||
if ppw == nullPtr
|
||||
then return (reverse accum)
|
||||
else do thisentry <- unpackUserEntry ppw
|
||||
worker (thisentry : accum)
|
||||
|
||||
foreign import capi unsafe "HsUnix.h getpwent"
|
||||
c_getpwent :: IO (Ptr CPasswd)
|
||||
foreign import capi unsafe "HsUnix.h setpwent"
|
||||
c_setpwent :: IO ()
|
||||
foreign import capi unsafe "HsUnix.h endpwent"
|
||||
c_endpwent :: IO ()
|
||||
#else
|
||||
getAllUserEntries = error "System.Posix.User.getAllUserEntries: not supported"
|
||||
#endif
|
||||
|
||||
#if defined(HAVE_GETPWUID_R) || defined(HAVE_GETPWNAM_R)
|
||||
pwBufSize :: Int
|
||||
#if defined(HAVE_SYSCONF) && defined(HAVE_SC_GETPW_R_SIZE_MAX)
|
||||
pwBufSize = sysconfWithDefault 1024 (#const _SC_GETPW_R_SIZE_MAX)
|
||||
#else
|
||||
pwBufSize = 1024
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_SYSCONF
|
||||
foreign import ccall unsafe "sysconf"
|
||||
c_sysconf :: CInt -> IO CLong
|
||||
|
||||
-- We need a default value since sysconf can fail and return -1
|
||||
-- even when the parameter name is defined in unistd.h.
|
||||
-- One example of this is _SC_GETPW_R_SIZE_MAX under
|
||||
-- Mac OS X 10.4.9 on i386.
|
||||
sysconfWithDefault :: Int -> CInt -> Int
|
||||
sysconfWithDefault def sc =
|
||||
unsafePerformIO $ do v <- fmap fromIntegral $ c_sysconf sc
|
||||
return $ if v == (-1) then def else v
|
||||
#endif
|
||||
|
||||
-- The following function is used by the getgr*_r, c_getpw*_r
|
||||
-- families of functions. These functions return their result
|
||||
-- in a struct that contains strings and they need a buffer
|
||||
-- that they can use to store those strings. We have to be
|
||||
-- careful to unpack the struct containing the result before
|
||||
-- the buffer is deallocated.
|
||||
doubleAllocWhileERANGE
|
||||
:: String
|
||||
-> String -- entry type: "user" or "group"
|
||||
-> Int
|
||||
-> (Ptr r -> IO a)
|
||||
-> (Ptr b -> CSize -> Ptr (Ptr r) -> IO CInt)
|
||||
-> IO a
|
||||
doubleAllocWhileERANGE loc enttype initlen unpack action =
|
||||
alloca $ go initlen
|
||||
where
|
||||
go len res = do
|
||||
r <- allocaBytes len $ \buf -> do
|
||||
rc <- action buf (fromIntegral len) res
|
||||
if rc /= 0
|
||||
then return (Left rc)
|
||||
else do p <- peek res
|
||||
when (p == nullPtr) $ notFoundErr
|
||||
fmap Right (unpack p)
|
||||
case r of
|
||||
Right x -> return x
|
||||
Left rc | Errno rc == eRANGE ->
|
||||
-- ERANGE means this is not an error
|
||||
-- we just have to try again with a larger buffer
|
||||
go (2 * len) res
|
||||
Left rc ->
|
||||
ioError (errnoToIOError loc (Errno rc) Nothing Nothing)
|
||||
notFoundErr =
|
||||
ioError $ flip ioeSetErrorString ("no such " ++ enttype)
|
||||
$ mkIOError doesNotExistErrorType loc Nothing Nothing
|
||||
|
||||
unpackUserEntry :: Ptr CPasswd -> IO UserEntry
|
||||
unpackUserEntry ptr = do
|
||||
name <- (#peek struct passwd, pw_name) ptr >>= peekCAString
|
||||
passwd <- (#peek struct passwd, pw_passwd) ptr >>= peekCAString
|
||||
uid <- (#peek struct passwd, pw_uid) ptr
|
||||
gid <- (#peek struct passwd, pw_gid) ptr
|
||||
#ifdef HAVE_NO_PASSWD_PW_GECOS
|
||||
gecos <- return "" -- pw_gecos does not exist on android
|
||||
#else
|
||||
gecos <- (#peek struct passwd, pw_gecos) ptr >>= peekCAString
|
||||
#endif
|
||||
dir <- (#peek struct passwd, pw_dir) ptr >>= peekCAString
|
||||
shell <- (#peek struct passwd, pw_shell) ptr >>= peekCAString
|
||||
return (UserEntry name passwd uid gid gecos dir shell)
|
||||
|
||||
-- Used when a function returns NULL to indicate either an error or
|
||||
-- EOF, depending on whether the global errno is nonzero.
|
||||
throwErrnoIfNullAndError :: String -> IO (Ptr a) -> IO (Ptr a)
|
||||
throwErrnoIfNullAndError loc act = do
|
||||
rc <- act
|
||||
errno <- getErrno
|
||||
if rc == nullPtr && errno /= eOK
|
||||
then throwErrno loc
|
||||
else return rc
|
49
unix/aclocal.m4
vendored
49
unix/aclocal.m4
vendored
@ -1,49 +0,0 @@
|
||||
# FP_COMPUTE_INT(EXPRESSION, VARIABLE, INCLUDES, IF-FAILS)
|
||||
# --------------------------------------------------------
|
||||
# Assign VARIABLE the value of the compile-time EXPRESSION using INCLUDES for
|
||||
# compilation. Execute IF-FAILS when unable to determine the value. Works for
|
||||
# cross-compilation, too.
|
||||
#
|
||||
# Implementation note: We are lazy and use an internal autoconf macro, but it
|
||||
# is supported in autoconf versions 2.50 up to the actual 2.57, so there is
|
||||
# little risk.
|
||||
AC_DEFUN([FP_COMPUTE_INT],
|
||||
[_AC_COMPUTE_INT([$1], [$2], [$3], [$4])[]dnl
|
||||
])# FP_COMPUTE_INT
|
||||
|
||||
|
||||
# FP_CHECK_CONST(EXPRESSION, [INCLUDES = DEFAULT-INCLUDES], [VALUE-IF-FAIL = -1])
|
||||
# -------------------------------------------------------------------------------
|
||||
# Defines CONST_EXPRESSION to the value of the compile-time EXPRESSION, using
|
||||
# INCLUDES. If the value cannot be determined, use VALUE-IF-FAIL.
|
||||
AC_DEFUN([FP_CHECK_CONST],
|
||||
[AS_VAR_PUSHDEF([fp_Cache], [fp_cv_const_$1])[]dnl
|
||||
AC_CACHE_CHECK([value of $1], fp_Cache,
|
||||
[FP_COMPUTE_INT([$1], fp_check_const_result, [AC_INCLUDES_DEFAULT([$2])],
|
||||
[fp_check_const_result=m4_default([$3], ['-1'])])
|
||||
AS_VAR_SET(fp_Cache, [$fp_check_const_result])])[]dnl
|
||||
AC_DEFINE_UNQUOTED(AS_TR_CPP([CONST_$1]), AS_VAR_GET(fp_Cache), [The value of $1.])[]dnl
|
||||
AS_VAR_POPDEF([fp_Cache])[]dnl
|
||||
])# FP_CHECK_CONST
|
||||
|
||||
|
||||
# FP_CHECK_CONSTS_TEMPLATE(EXPRESSION...)
|
||||
# ---------------------------------------
|
||||
# autoheader helper for FP_CHECK_CONSTS
|
||||
m4_define([FP_CHECK_CONSTS_TEMPLATE],
|
||||
[AC_FOREACH([fp_Const], [$1],
|
||||
[AH_TEMPLATE(AS_TR_CPP(CONST_[]fp_Const),
|
||||
[The value of ]fp_Const[.])])[]dnl
|
||||
])# FP_CHECK_CONSTS_TEMPLATE
|
||||
|
||||
|
||||
# FP_CHECK_CONSTS(EXPRESSION..., [INCLUDES = DEFAULT-INCLUDES], [VALUE-IF-FAIL = -1])
|
||||
# -----------------------------------------------------------------------------------
|
||||
# List version of FP_CHECK_CONST
|
||||
AC_DEFUN([FP_CHECK_CONSTS],
|
||||
[FP_CHECK_CONSTS_TEMPLATE([$1])dnl
|
||||
for fp_const_name in $1
|
||||
do
|
||||
FP_CHECK_CONST([$fp_const_name], [$2], [$3])
|
||||
done
|
||||
])# FP_CHECK_CONSTS
|
@ -1,2 +0,0 @@
|
||||
ghc-head: True
|
||||
unconstrained: False
|
@ -1 +0,0 @@
|
||||
packages: .
|
@ -1,116 +0,0 @@
|
||||
/* -----------------------------------------------------------------------------
|
||||
*
|
||||
* (c) The University of Glasgow 2002
|
||||
*
|
||||
* Definitions for package `unix' which are visible in Haskell land.
|
||||
*
|
||||
* ---------------------------------------------------------------------------*/
|
||||
|
||||
#include "HsUnix.h"
|
||||
|
||||
#ifdef HAVE_RTLDNEXT
|
||||
void *__hsunix_rtldNext (void) {return RTLD_NEXT;}
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_RTLDDEFAULT
|
||||
void *__hsunix_rtldDefault (void) {return RTLD_DEFAULT;}
|
||||
#endif
|
||||
|
||||
#if HAVE_PTSNAME && (__GLASGOW_HASKELL__ < 800)
|
||||
// On Linux (and others), <stdlib.h> needs to be included while
|
||||
// `_XOPEN_SOURCE` is already defined. However, GHCs before GHC 8.0
|
||||
// didn't do that yet for CApiFFI, so we need this workaround here.
|
||||
|
||||
char *__hsunix_ptsname(int fd) { return ptsname(fd); }
|
||||
int __hsunix_grantpt(int fd) { return grantpt(fd); }
|
||||
int __hsunix_unlockpt(int fd) { return unlockpt(fd); }
|
||||
#endif
|
||||
|
||||
// push a SVR4 STREAMS module; do nothing if STREAMS not available
|
||||
int __hsunix_push_module(int fd, const char *module)
|
||||
{
|
||||
#if defined(I_PUSH) && !defined(HAVE_DEV_PTC)
|
||||
return ioctl(fd, I_PUSH, module);
|
||||
#else
|
||||
return 0;
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
* GNU glibc 2.23 and later deprecate `readdir_r` in favour of plain old
|
||||
* `readdir` which in some upcoming POSIX standard is going to required to be
|
||||
* re-entrant.
|
||||
* Eventually we want to drop `readder_r` all together, but want to be
|
||||
* compatible with older unixen which may not have a re-entrant `readdir`.
|
||||
* Solution is to make systems with *known* re-entrant `readir` use that and use
|
||||
* `readdir_r` whereever we have it and don't *know* that `readdir` is
|
||||
* re-entrant.
|
||||
*/
|
||||
|
||||
#if defined (__GLIBC__) && (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 23)
|
||||
#define USE_READDIR_R 0
|
||||
#else
|
||||
#define USE_READDIR_R 1
|
||||
#endif
|
||||
|
||||
/*
|
||||
* read an entry from the directory stream; opt for the
|
||||
* re-entrant friendly way of doing this, if available.
|
||||
*/
|
||||
int __hscore_readdir( DIR *dirPtr, struct dirent **pDirEnt )
|
||||
{
|
||||
#if HAVE_READDIR_R && USE_READDIR_R
|
||||
struct dirent* p;
|
||||
int res;
|
||||
static unsigned int nm_max = (unsigned int)-1;
|
||||
|
||||
if (pDirEnt == NULL) {
|
||||
return -1;
|
||||
}
|
||||
if (nm_max == (unsigned int)-1) {
|
||||
#ifdef NAME_MAX
|
||||
nm_max = NAME_MAX + 1;
|
||||
#else
|
||||
nm_max = pathconf(".", _PC_NAME_MAX);
|
||||
if (nm_max == -1) { nm_max = 255; }
|
||||
nm_max++;
|
||||
#endif
|
||||
}
|
||||
p = (struct dirent*)malloc(sizeof(struct dirent) + nm_max);
|
||||
if (p == NULL) return -1;
|
||||
res = readdir_r(dirPtr, p, pDirEnt);
|
||||
if (res != 0) {
|
||||
*pDirEnt = NULL;
|
||||
free(p);
|
||||
}
|
||||
else if (*pDirEnt == NULL) {
|
||||
// end of stream
|
||||
free(p);
|
||||
}
|
||||
return res;
|
||||
#else
|
||||
|
||||
if (pDirEnt == NULL) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
*pDirEnt = readdir(dirPtr);
|
||||
if (*pDirEnt == NULL) {
|
||||
return -1;
|
||||
} else {
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
char *__hscore_d_name( struct dirent* d )
|
||||
{
|
||||
return (d->d_name);
|
||||
}
|
||||
|
||||
void __hscore_free_dirent(struct dirent *dEnt)
|
||||
{
|
||||
#if HAVE_READDIR_R && USE_READDIR_R
|
||||
free(dEnt);
|
||||
#endif
|
||||
}
|
@ -1,173 +0,0 @@
|
||||
/* -----------------------------------------------------------------------------
|
||||
(c) The University of Glasgow 1995-2004
|
||||
|
||||
Our low-level exec() variant.
|
||||
|
||||
Note: __hsunix_execvpe() is very similiar to the function
|
||||
execvpe(3) as provided by glibc 2.11 and later. However, if
|
||||
execvpe(3) is available, we use that instead.
|
||||
|
||||
-------------------------------------------------------------------------- */
|
||||
|
||||
#include "HsUnixConfig.h"
|
||||
|
||||
#include <errno.h>
|
||||
#include <sys/types.h>
|
||||
#if HAVE_SYS_WAIT_H
|
||||
# include <sys/wait.h>
|
||||
#endif
|
||||
#include <unistd.h>
|
||||
#include <sys/time.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <errno.h>
|
||||
|
||||
#include "execvpe.h"
|
||||
|
||||
#if !defined(execvpe) && !HAVE_DECL_EXECVPE
|
||||
// On some archs such as AIX, the prototype may be missing
|
||||
int execvpe(const char *file, char *const argv[], char *const envp[]);
|
||||
#endif
|
||||
|
||||
/*
|
||||
* We want the search semantics of execvp, but we want to provide our
|
||||
* own environment, like execve. The following copyright applies to
|
||||
* this code, as it is a derivative of execvp:
|
||||
*-
|
||||
* Copyright (c) 1991 The Regents of the University of California.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
int
|
||||
__hsunix_execvpe(const char *name, char *const argv[], char *const envp[])
|
||||
{
|
||||
#if HAVE_EXECVPE
|
||||
return execvpe(name, argv, envp);
|
||||
#else
|
||||
register int lp, ln;
|
||||
register char *p;
|
||||
int eacces=0, etxtbsy=0;
|
||||
char *bp, *cur, *path, *buf = 0;
|
||||
|
||||
/* If it's an absolute or relative path name, it's easy. */
|
||||
if (strchr(name, '/')) {
|
||||
bp = (char *) name;
|
||||
cur = path = buf = NULL;
|
||||
goto retry;
|
||||
}
|
||||
|
||||
/* Get the path we're searching. */
|
||||
if (!(path = getenv("PATH"))) {
|
||||
# ifdef HAVE_CONFSTR
|
||||
ln = confstr(_CS_PATH, NULL, 0);
|
||||
if ((cur = path = malloc(ln + 1)) != NULL) {
|
||||
path[0] = ':';
|
||||
(void) confstr (_CS_PATH, path + 1, ln);
|
||||
}
|
||||
# else
|
||||
if ((cur = path = malloc(1 + 1)) != NULL) {
|
||||
path[0] = ':';
|
||||
path[1] = '\0';
|
||||
}
|
||||
# endif
|
||||
} else
|
||||
cur = path = strdup(path);
|
||||
|
||||
if (path == NULL || (bp = buf = malloc(strlen(path)+strlen(name)+2)) == NULL)
|
||||
goto done;
|
||||
|
||||
while (cur != NULL) {
|
||||
p = cur;
|
||||
if ((cur = strchr(cur, ':')) != NULL)
|
||||
*cur++ = '\0';
|
||||
|
||||
/*
|
||||
* It's a SHELL path -- double, leading and trailing colons mean the current
|
||||
* directory.
|
||||
*/
|
||||
if (!*p) {
|
||||
p = ".";
|
||||
lp = 1;
|
||||
} else
|
||||
lp = strlen(p);
|
||||
ln = strlen(name);
|
||||
|
||||
memcpy(buf, p, lp);
|
||||
buf[lp] = '/';
|
||||
memcpy(buf + lp + 1, name, ln);
|
||||
buf[lp + ln + 1] = '\0';
|
||||
|
||||
retry:
|
||||
(void) execve(bp, argv, envp);
|
||||
switch (errno) {
|
||||
case EACCES:
|
||||
eacces = 1;
|
||||
break;
|
||||
case ENOTDIR:
|
||||
case ENOENT:
|
||||
break;
|
||||
case ENOEXEC:
|
||||
{
|
||||
register size_t cnt;
|
||||
register char **ap;
|
||||
|
||||
for (cnt = 0, ap = (char **) argv; *ap; ++ap, ++cnt)
|
||||
;
|
||||
if ((ap = malloc((cnt + 2) * sizeof(char *))) != NULL) {
|
||||
memcpy(ap + 2, argv + 1, cnt * sizeof(char *));
|
||||
|
||||
ap[0] = "sh";
|
||||
ap[1] = bp;
|
||||
(void) execve("/bin/sh", ap, envp);
|
||||
free(ap);
|
||||
}
|
||||
goto done;
|
||||
}
|
||||
case ETXTBSY:
|
||||
if (etxtbsy < 3)
|
||||
(void) sleep(++etxtbsy);
|
||||
goto retry;
|
||||
default:
|
||||
goto done;
|
||||
}
|
||||
}
|
||||
if (eacces)
|
||||
errno = EACCES;
|
||||
else if (!errno)
|
||||
errno = ENOENT;
|
||||
done:
|
||||
if (path)
|
||||
free(path);
|
||||
if (buf)
|
||||
free(buf);
|
||||
return (-1);
|
||||
#endif
|
||||
}
|
@ -1,150 +0,0 @@
|
||||
# Changelog for [`unix` package](http://hackage.haskell.org/package/unix)
|
||||
|
||||
## 2.8.0.0 *UNRELEASED*
|
||||
|
||||
* Added terminal output flags to `System.Posix.Terminal.Common.TerminalMode`
|
||||
|
||||
IXANY, ONLCR, OCRNL, ONOCR, ONLRET, OFDEL, OFILL, NLDLY(NL0,NL1),
|
||||
CRDLY(CR0,CR1,CR2,CR2), TABDLY(TAB0,TAB1,TAB2,TAB3) BSDLY(BS0,BS1),
|
||||
VTDLY(VT0,VT1), FFDLY(FF0,FF1)
|
||||
|
||||
* Add support for `O_NOFOLLOW`, `O_CLOEXEC`, `O_DIRECTORY` and `O_SYNC`
|
||||
(#6, #57)
|
||||
|
||||
* Refactor API of `openFd` removing `Maybe FileMode` argument,
|
||||
which now must be passed as part of `OpenFileFlags`
|
||||
(e.g. `defaultFileFlags { creat = Just mode }`) (#58)
|
||||
|
||||
* Remove deprecated `execvpe(3)` legacy-emulation CPP macro
|
||||
|
||||
* Generalise return type of `exitImmediately` from `ExitCode -> IO ()` to
|
||||
`∀a. ExitCode -> IO a` (#130)
|
||||
|
||||
* Add `Read`, `Show`, `Eq`, and `Ord` typeclass instances to `OpenFileFlags` and `OpenMode`. (#75, #141)
|
||||
|
||||
## 2.7.2.2 *May 2017*
|
||||
|
||||
* Bundled with GHC 8.2.1
|
||||
|
||||
* Improve Autoconf detection of `telldir`/`seekdir` and define
|
||||
`_POSIX_VDISABLE` if missing for Android (#91,#90)
|
||||
|
||||
* Fix error message of `createSymbolicLink` (#84)
|
||||
|
||||
## 2.7.2.1 *Nov 2016*
|
||||
|
||||
* Bundled with GHC 8.0.2
|
||||
|
||||
* Don't use `readdir_r` if its deprecated.
|
||||
|
||||
* Add argument documentation for Env modules
|
||||
|
||||
## 2.7.2.0 *Apr 2016*
|
||||
|
||||
* Bundled with GHC 8.0.1
|
||||
|
||||
* Don't assume non-POSIX `WCOREDUMP(x)` macro exists
|
||||
|
||||
* Don't assume existence of `termios(3)` constants beyond `B38400`
|
||||
|
||||
* Don't assume existence of `ctermid(3)`/`tcdrain(3)`
|
||||
|
||||
* Change `drainOutput`'s `tcdrain(3)` into a `safe` FFI call
|
||||
|
||||
* Turn build error into compile warnings for exotic `struct stat`
|
||||
configurations (GHC #8859)
|
||||
|
||||
* Improve detection of `fdatasync(2)` (GHC #11137)
|
||||
|
||||
* Drop support for Hugs
|
||||
|
||||
* Drop support for Cygwin (and Windows in general)
|
||||
|
||||
## 2.7.1.0 *Dec 2014*
|
||||
|
||||
* Bundled with GHC 7.10.1
|
||||
|
||||
* Add support for `base-4.8.0.0`
|
||||
|
||||
* Tighten `SafeHaskell` bounds for GHC 7.10+
|
||||
|
||||
* Add haddock comments on `RTLD_NEXT` and `RTLD_DEFAULT`
|
||||
|
||||
* Deprecate function `haveRtldLocal`
|
||||
|
||||
* Fix `getGroupEntryForID/getGroupEntryForName` on Solaris. Solaris uses
|
||||
CPP macros for required `getgrgid_r` and `getgrnam_r` functions definition
|
||||
so the fix is to change from C ABI calling convention to C API calling
|
||||
convention
|
||||
|
||||
* Fix potential type-mismatch in `telldir`/`seekdir` FFI imports
|
||||
|
||||
* Use CAPI FFI import for `truncate` to make sure the LFS-version is used.
|
||||
|
||||
* `executeFile`: Fix `ENOTDIR` error for entries with non-directory
|
||||
components in `PATH` (and instead skip over non-directory `PATH`-elements)
|
||||
|
||||
* New functions in `System.Posix.Unistd`:
|
||||
- `fileSynchronise` (aka `fsync(2)`), and
|
||||
- `fileSynchroniseDataOnly` (aka `fdatasync(2)`)
|
||||
|
||||
* New module `System.Posix.Fcntl` providing
|
||||
- `fileAdvise` (aka `posix_fadvise(2)`), and
|
||||
- `fileAllocate` (aka `posix_fallocate(2)`)
|
||||
|
||||
* Fix SIGINFO and SIGWINCH definitions
|
||||
|
||||
## 2.7.0.1 *Mar 2014*
|
||||
|
||||
* Bundled with GHC 7.8.1
|
||||
|
||||
* Handle `EROFS` and `ETXTBSY` as (non-exceptional) permission denied in
|
||||
`fileAccess`
|
||||
|
||||
* Fix `getFileStatus` to retry `stat(2)` when it returns `EAGAIN`
|
||||
(this can happen on Solaris)
|
||||
|
||||
## 2.7.0.0 *Nov 2013*
|
||||
|
||||
* New `forkProcessWithUnmask` function in the style of `forkIOWithUnmask`
|
||||
|
||||
* Change `forkProcess` to inherit the exception masking state of its caller
|
||||
|
||||
* Add new `Bool` flag to `ProcessStatus(Terminated)` constructor
|
||||
indicating whether a core dump occured
|
||||
|
||||
* New functions in `System.Posix.Files{,.ByteString}` for operating
|
||||
on high resolution file timestamps:
|
||||
|
||||
setFdTimesHiRes :: Fd -> POSIXTime -> POSIXTime -> IO ()
|
||||
setFileTimesHiRes :: FilePath -> POSIXTime -> POSIXTime -> IO ()
|
||||
setSymbolicLinkTimesHiRes :: FilePath -> POSIXTime -> POSIXTime -> IO ()
|
||||
touchFd :: Fd -> IO ()
|
||||
touchSymbolicLink :: FilePath -> IO ()
|
||||
|
||||
* Export `SignalInfo(..)` and `SignalSpecificInfo(..)` as well as
|
||||
the two `Handler` constructors `CatchInfo` and `CatchInfoOnce`
|
||||
from `System.Posix.Signals`
|
||||
|
||||
* Don't export `seekDirStream` and `tellDirStream` if the underlying
|
||||
`seekdir(3)`/`telldir(3)` system calls are not available (as on Android)
|
||||
|
||||
* Fix library detection of `shm*` on openSUSE (#8350)
|
||||
|
||||
* Minor documentation fixes/updates
|
||||
|
||||
* Update package to `cabal-version >= 1.10` format
|
||||
|
||||
## 2.6.0.1 *Jan 2013*
|
||||
|
||||
* Bundled with GHC 7.6.2
|
||||
* Fix memory corruption issue in `putEnv`
|
||||
* Use `pthread_kill(3)` instead of `raise(2)` on OS X too
|
||||
|
||||
## 2.6.0.0 *Sep 2012*
|
||||
|
||||
* Bundled with GHC 7.6.1
|
||||
* New functions `mkdtemp` and `mkstemps` in `System.Posix.Temp`
|
||||
* New functions `setEnvironment` and `cleanEnv`
|
||||
* New functions `accessTimeHiRes`, `modificationTimeHiRes`, and
|
||||
`statusChangeTimeHiRes` for accessing high resolution timestamps
|
1466
unix/config.guess
vendored
1466
unix/config.guess
vendored
File diff suppressed because it is too large
Load Diff
1836
unix/config.sub
vendored
1836
unix/config.sub
vendored
File diff suppressed because it is too large
Load Diff
@ -1,240 +0,0 @@
|
||||
AC_PREREQ([2.60])
|
||||
AC_INIT([Haskell unix package], [2.0], [libraries@haskell.org], [unix])
|
||||
|
||||
# Safety check: Ensure that we are in the correct source directory.
|
||||
AC_CONFIG_SRCDIR([include/HsUnix.h])
|
||||
|
||||
AC_PROG_CC
|
||||
|
||||
dnl make extensions visible to allow feature-tests to detect them lateron
|
||||
AC_USE_SYSTEM_EXTENSIONS
|
||||
|
||||
AC_CONFIG_HEADERS([include/HsUnixConfig.h])
|
||||
|
||||
# Is this a Unix system?
|
||||
AC_CHECK_HEADER([dlfcn.h], [BUILD_PACKAGE_BOOL=True], [BUILD_PACKAGE_BOOL=False])
|
||||
AC_SUBST([BUILD_PACKAGE_BOOL])
|
||||
|
||||
AC_C_CONST
|
||||
|
||||
dnl ** Enable large file support. NB. do this before testing the type of
|
||||
dnl off_t, because it will affect the result of that test.
|
||||
dnl
|
||||
dnl WARNING: It's essential this check agrees with HsBaseConfig.h as otherwise
|
||||
dnl the definitions of COff/coff_t don't line up
|
||||
AC_SYS_LARGEFILE
|
||||
|
||||
AC_CHECK_HEADERS([dirent.h fcntl.h grp.h limits.h pwd.h signal.h string.h])
|
||||
AC_CHECK_HEADERS([sys/resource.h sys/stat.h sys/times.h sys/time.h])
|
||||
AC_CHECK_HEADERS([sys/utsname.h sys/wait.h])
|
||||
AC_CHECK_HEADERS([bsd/libutil.h libutil.h pty.h utmp.h])
|
||||
AC_CHECK_HEADERS([termios.h time.h unistd.h utime.h])
|
||||
|
||||
AC_CHECK_FUNCS([getgrgid_r getgrnam_r getpwnam_r getpwuid_r getpwnam getpwuid])
|
||||
AC_CHECK_FUNCS([getpwent getgrent])
|
||||
AC_CHECK_FUNCS([lchown setenv sysconf unsetenv clearenv])
|
||||
AC_CHECK_FUNCS([nanosleep])
|
||||
AC_CHECK_FUNCS([ptsname])
|
||||
AC_CHECK_FUNCS([setitimer])
|
||||
AC_CHECK_FUNCS([readdir_r])
|
||||
|
||||
dnl not available on android so check for it
|
||||
AC_CANONICAL_TARGET
|
||||
AS_CASE([$target_os],[*-android*],[],[AC_CHECK_FUNCS([telldir seekdir])])
|
||||
|
||||
dnl When available, _NSGetEnviron() (defined in <crt_externs.h>) is
|
||||
dnl the preferred way to access environ(7)
|
||||
AC_CHECK_FUNCS([_NSGetEnviron])
|
||||
|
||||
dnl This is e.g. available as a GNU extension in glibc 2.11+
|
||||
AC_CHECK_DECLS([execvpe])
|
||||
AC_CHECK_FUNCS([execvpe])
|
||||
|
||||
AC_CHECK_MEMBERS([struct stat.st_atim])
|
||||
AC_CHECK_MEMBERS([struct stat.st_mtim])
|
||||
AC_CHECK_MEMBERS([struct stat.st_ctim])
|
||||
AC_CHECK_MEMBERS([struct stat.st_atimespec])
|
||||
AC_CHECK_MEMBERS([struct stat.st_mtimespec])
|
||||
AC_CHECK_MEMBERS([struct stat.st_ctimespec])
|
||||
AC_CHECK_MEMBERS([struct stat.st_atimensec])
|
||||
AC_CHECK_MEMBERS([struct stat.st_mtimensec])
|
||||
AC_CHECK_MEMBERS([struct stat.st_ctimensec])
|
||||
AC_CHECK_MEMBERS([struct stat.st_atime_n])
|
||||
AC_CHECK_MEMBERS([struct stat.st_mtime_n])
|
||||
AC_CHECK_MEMBERS([struct stat.st_ctime_n])
|
||||
AC_CHECK_MEMBERS([struct stat.st_uatime])
|
||||
AC_CHECK_MEMBERS([struct stat.st_umtime])
|
||||
AC_CHECK_MEMBERS([struct stat.st_uctime])
|
||||
|
||||
AC_CHECK_MEMBER([struct passwd.pw_gecos], [], [AC_DEFINE([HAVE_NO_PASSWD_PW_GECOS],[],[Ignore the pw_gecos member of passwd where it does not exist])], [[#include <pwd.h>]])
|
||||
|
||||
# Functions for changing file timestamps
|
||||
AC_CHECK_FUNCS([utimensat futimens])
|
||||
AC_CHECK_FUNCS([lutimes futimes])
|
||||
|
||||
# Additional temp functions
|
||||
dnl androids bionic doesn't have mkstemps
|
||||
# We explicilty check for android, as the check AC_CHECK_FUNCS performs returns "yes" for mkstemps
|
||||
# when targetting android. See similar conditionals for seekdir and telldir.
|
||||
AS_CASE([$target_os],[*-android*],[AC_CHECK_FUNCS([mkdtemp])],[AC_CHECK_FUNCS([mkstemps mkdtemp])])
|
||||
|
||||
# Functions for file synchronization and allocation control
|
||||
AC_CHECK_FUNCS([fsync])
|
||||
|
||||
# On OSX linking against 'fdatasync' succeeds, but that doesn't pick
|
||||
# the expected the POSIX 'fdatasync' function. So make sure that we
|
||||
# also have a function declaration in scope, in addition to being able
|
||||
# to link against 'fdatasync'.
|
||||
AC_CHECK_DECLS([fdatasync],[AC_CHECK_FUNCS([fdatasync])])
|
||||
|
||||
|
||||
AC_CHECK_FUNCS([posix_fadvise posix_fallocate])
|
||||
|
||||
# Some termios(3) functions known to be missing sometimes (see also #55)
|
||||
AC_CHECK_DECLS([tcdrain],[AC_DEFINE([HAVE_TCDRAIN],[1],[Define to 1 if you have the `tcdrain' function.])],[],[AC_INCLUDES_DEFAULT
|
||||
#ifdef HAVE_TERMIOS_H
|
||||
#include <termios.h>
|
||||
#endif
|
||||
])
|
||||
|
||||
AC_CHECK_DECLS([ctermid],[AC_DEFINE([HAVE_CTERMID],[1],[Define to 1 if you have the `ctermid' function.])],[],[AC_INCLUDES_DEFAULT
|
||||
#ifdef HAVE_TERMIOS_H
|
||||
#include <termios.h>
|
||||
#endif
|
||||
])
|
||||
|
||||
# Avoid adding rt if absent or unneeded
|
||||
# shm_open needs -lrt on linux
|
||||
AC_SEARCH_LIBS(shm_open, rt, [AC_CHECK_FUNCS([shm_open shm_unlink])])
|
||||
AS_IF([test "x$ac_cv_search_shm_open" = x-lrt], [EXTRA_LIBS="$EXTRA_LIBS rt"])
|
||||
|
||||
FP_CHECK_CONSTS([SIGABRT SIGALRM SIGBUS SIGCHLD SIGCONT SIGFPE SIGHUP SIGILL SIGINT SIGKILL SIGPIPE SIGQUIT SIGSEGV SIGSTOP SIGTERM SIGTSTP SIGTTIN SIGTTOU SIGUSR1 SIGUSR2 SIGPOLL SIGPROF SIGSYS SIGTRAP SIGURG SIGVTALRM SIGXCPU SIGXFSZ SIG_BLOCK SIG_SETMASK SIG_UNBLOCK SIGINFO SIGWINCH], [
|
||||
#if HAVE_SIGNAL_H
|
||||
#include <signal.h>
|
||||
#endif])
|
||||
|
||||
AC_MSG_CHECKING([for _SC_GETGR_R_SIZE_MAX])
|
||||
AC_EGREP_CPP(we_have_that_sysconf_thing,
|
||||
[
|
||||
#include <unistd.h>
|
||||
#ifdef _SC_GETGR_R_SIZE_MAX
|
||||
we_have_that_sysconf_thing
|
||||
#endif
|
||||
],
|
||||
[AC_MSG_RESULT([yes])
|
||||
AC_DEFINE([HAVE_SC_GETGR_R_SIZE_MAX], [1], [Define to 1 if <unistd.h> defines _SC_GETGR_R_SIZE_MAX.])],
|
||||
[AC_MSG_RESULT([no])])
|
||||
|
||||
AC_MSG_CHECKING([for _SC_GETPW_R_SIZE_MAX])
|
||||
AC_EGREP_CPP(we_have_that_sysconf_thing,
|
||||
[
|
||||
#include <unistd.h>
|
||||
#ifdef _SC_GETPW_R_SIZE_MAX
|
||||
we_have_that_sysconf_thing
|
||||
#endif
|
||||
],
|
||||
[AC_MSG_RESULT([yes])
|
||||
AC_DEFINE([HAVE_SC_GETPW_R_SIZE_MAX], [1], [Define to 1 if <unistd.h> defines _SC_GETPW_R_SIZE_MAX.])],
|
||||
[AC_MSG_RESULT([no])])
|
||||
|
||||
dnl ---------- usleep ----------
|
||||
dnl --- stolen from guile configure ---
|
||||
|
||||
### On some systems usleep has no return value. If it does have one,
|
||||
### we'd like to return it; otherwise, we'll fake it.
|
||||
AC_CACHE_CHECK([return type of usleep], fptools_cv_func_usleep_return_type,
|
||||
[AC_EGREP_HEADER(changequote(<, >)<void[ ]+usleep>changequote([, ]),
|
||||
unistd.h,
|
||||
[fptools_cv_func_usleep_return_type=void],
|
||||
[fptools_cv_func_usleep_return_type=int])])
|
||||
case "$fptools_cv_func_usleep_return_type" in
|
||||
"void" )
|
||||
AC_DEFINE([USLEEP_RETURNS_VOID], [1], [Define if the system headers declare usleep to return void.])
|
||||
;;
|
||||
esac
|
||||
|
||||
### POSIX.1003.1 unsetenv returns 0 or -1 (EINVAL), but older implementations
|
||||
### in common use return void.
|
||||
AC_CACHE_CHECK([return type of unsetenv], fptools_cv_func_unsetenv_return_type,
|
||||
[AC_EGREP_HEADER(changequote(<, >)<void[ ]+unsetenv>changequote([, ]),
|
||||
stdlib.h,
|
||||
[fptools_cv_func_unsetenv_return_type=void],
|
||||
[fptools_cv_func_unsetenv_return_type=int])])
|
||||
case "$fptools_cv_func_unsetenv_return_type" in
|
||||
"void" )
|
||||
AC_DEFINE([UNSETENV_RETURNS_VOID], [1], [Define if stdlib.h declares unsetenv to return void.])
|
||||
;;
|
||||
esac
|
||||
|
||||
dnl On some hosts (e.g. SuSe and Ubuntu Linux) RTLD_NEXT and RTLD_DEFAULT are
|
||||
dnl not visible without setting _GNU_SOURCE, which we really don't want to.
|
||||
dnl Also see comments in System/Posix/DynamicLinker/Prim.hsc.
|
||||
AC_MSG_CHECKING(for RTLD_NEXT from dlfcn.h)
|
||||
AC_EGREP_CPP(yes,
|
||||
[
|
||||
#include <dlfcn.h>
|
||||
#ifdef RTLD_NEXT
|
||||
yes
|
||||
#endif
|
||||
], [
|
||||
AC_MSG_RESULT(yes)
|
||||
AC_DEFINE([HAVE_RTLDNEXT], [1], [Define to 1 if we can see RTLD_NEXT in dlfcn.h.])
|
||||
], [
|
||||
AC_MSG_RESULT(no)
|
||||
])
|
||||
|
||||
AC_MSG_CHECKING(for RTLD_DEFAULT from dlfcn.h)
|
||||
AC_EGREP_CPP(yes,
|
||||
[
|
||||
#include <dlfcn.h>
|
||||
#ifdef RTLD_DEFAULT
|
||||
yes
|
||||
#endif
|
||||
], [
|
||||
AC_MSG_RESULT(yes)
|
||||
AC_DEFINE([HAVE_RTLDDEFAULT], [1], [Define to 1 if RTLD_DEFAULT is available.])
|
||||
], [
|
||||
AC_MSG_RESULT(no)
|
||||
])
|
||||
|
||||
AC_CHECK_FUNCS(openpty,,
|
||||
AC_CHECK_LIB(util,openpty,
|
||||
[AC_DEFINE(HAVE_OPENPTY) EXTRA_LIBS="$EXTRA_LIBS util"],
|
||||
AC_CHECK_LIB(bsd,openpty, [AC_DEFINE(HAVE_OPENPTY) EXTRA_LIBS="$EXTRA_LIBS bsd"])
|
||||
)
|
||||
)
|
||||
|
||||
AC_MSG_CHECKING(for /dev/ptmx)
|
||||
if test -r /dev/ptmx
|
||||
then
|
||||
AC_MSG_RESULT(yes)
|
||||
AC_DEFINE(HAVE_DEV_PTMX, 1,
|
||||
[Define if we have /dev/ptmx.])
|
||||
else
|
||||
AC_MSG_RESULT(no)
|
||||
fi
|
||||
|
||||
AC_MSG_CHECKING(for /dev/ptc)
|
||||
if test -r /dev/ptc
|
||||
then
|
||||
AC_MSG_RESULT(yes)
|
||||
AC_DEFINE(HAVE_DEV_PTC, 1,
|
||||
[Define if we have /dev/ptc.])
|
||||
else
|
||||
AC_MSG_RESULT(no)
|
||||
fi
|
||||
|
||||
# Avoid adding dl if absent or unneeded
|
||||
AC_SEARCH_LIBS([dlopen], [dl], [EXTRA_LIBS="$EXTRA_LIBS $ac_lib"])
|
||||
|
||||
# -{l,}pthread goo
|
||||
AC_CANONICAL_TARGET
|
||||
|
||||
AC_SEARCH_LIBS(sem_close, pthread,
|
||||
[EXTRA_LIBS="$EXTRA_LIBS $ac_lib"],
|
||||
[AC_MSG_NOTICE([Not found])])
|
||||
|
||||
AC_SUBST([EXTRA_LIBS])
|
||||
AC_CONFIG_FILES([unix.buildinfo])
|
||||
|
||||
AC_OUTPUT
|
@ -1,120 +0,0 @@
|
||||
/* -----------------------------------------------------------------------------
|
||||
*
|
||||
* (c) The University of Glasgow 2002
|
||||
*
|
||||
* Definitions for package `unix' which are visible in Haskell land.
|
||||
*
|
||||
* ---------------------------------------------------------------------------*/
|
||||
|
||||
#ifndef HSUNIX_H
|
||||
#define HSUNIX_H
|
||||
|
||||
#include "HsUnixConfig.h"
|
||||
#include "HsFFI.h"
|
||||
|
||||
/* ultra-evil... */
|
||||
#undef PACKAGE_BUGREPORT
|
||||
#undef PACKAGE_NAME
|
||||
#undef PACKAGE_STRING
|
||||
#undef PACKAGE_TARNAME
|
||||
#undef PACKAGE_VERSION
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#ifdef HAVE_STRING_H
|
||||
#include <string.h>
|
||||
#endif
|
||||
#ifdef HAVE_SYS_TIMES_H
|
||||
#include <sys/times.h>
|
||||
#endif
|
||||
#ifdef HAVE_SYS_TIME_H
|
||||
#include <sys/time.h>
|
||||
#endif
|
||||
#ifdef HAVE_SYS_RESOURCE_H
|
||||
#include <sys/resource.h>
|
||||
#endif
|
||||
#ifdef HAVE_SYS_WAIT_H
|
||||
#include <sys/wait.h>
|
||||
#endif
|
||||
#ifdef HAVE_SYS_STAT_H
|
||||
#include <sys/stat.h>
|
||||
#endif
|
||||
#ifdef HAVE_TIME_H
|
||||
#include <time.h>
|
||||
#endif
|
||||
#ifdef HAVE_UNISTD_H
|
||||
#include <unistd.h>
|
||||
#endif
|
||||
#ifdef HAVE_UTIME_H
|
||||
#include <utime.h>
|
||||
#endif
|
||||
#ifdef HAVE_FCNTL_H
|
||||
#include <fcntl.h>
|
||||
#endif
|
||||
#ifdef HAVE_LIMITS_H
|
||||
#include <limits.h>
|
||||
#endif
|
||||
#ifdef HAVE_TERMIOS_H
|
||||
#include <termios.h>
|
||||
#endif
|
||||
#ifdef HAVE_SYS_UTSNAME_H
|
||||
#include <sys/utsname.h>
|
||||
#endif
|
||||
#ifdef HAVE_PWD_H
|
||||
#include <pwd.h>
|
||||
#endif
|
||||
#ifdef HAVE_GRP_H
|
||||
#include <grp.h>
|
||||
#endif
|
||||
#ifdef HAVE_DIRENT_H
|
||||
#include <dirent.h>
|
||||
#endif
|
||||
|
||||
#if defined(HAVE_BSD_LIBUTIL_H)
|
||||
#include <bsd/libutil.h>
|
||||
#elif defined(HAVE_LIBUTIL_H)
|
||||
#include <libutil.h>
|
||||
#endif
|
||||
#ifdef HAVE_PTY_H
|
||||
#include <pty.h>
|
||||
#endif
|
||||
#ifdef HAVE_UTMP_H
|
||||
#include <utmp.h>
|
||||
#endif
|
||||
|
||||
#include <dlfcn.h>
|
||||
|
||||
#ifdef HAVE_SIGNAL_H
|
||||
#include <signal.h>
|
||||
#endif
|
||||
|
||||
/* defined in rts/posix/Signals.c */
|
||||
extern HsInt nocldstop;
|
||||
|
||||
/* defined in libc */
|
||||
extern char **environ;
|
||||
|
||||
#ifdef HAVE_RTLDNEXT
|
||||
void *__hsunix_rtldNext (void);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_RTLDDEFAULT
|
||||
void *__hsunix_rtldDefault (void);
|
||||
#endif
|
||||
|
||||
/* O_SYNC doesn't exist on Mac OS X and (at least some versions of) FreeBSD,
|
||||
fall back to O_FSYNC, which should be the same */
|
||||
#ifndef O_SYNC
|
||||
# define O_SYNC O_FSYNC
|
||||
#endif
|
||||
|
||||
// not part of POSIX, hence may not be always defined
|
||||
#ifndef WCOREDUMP
|
||||
# define WCOREDUMP(s) 0
|
||||
#endif
|
||||
|
||||
// push a SVR4 STREAMS module; do nothing if STREAMS not available
|
||||
int __hsunix_push_module(int fd, const char *module);
|
||||
|
||||
#endif
|
@ -1,13 +0,0 @@
|
||||
/* ----------------------------------------------------------------------------
|
||||
(c) The University of Glasgow 2004
|
||||
|
||||
Interface for code in cbits/execvpe.c
|
||||
------------------------------------------------------------------------- */
|
||||
|
||||
#ifndef HSUNIX_EXECVPE_H
|
||||
#define HSUNIX_EXECVPE_H
|
||||
|
||||
extern int
|
||||
__hsunix_execvpe(const char *name, char *const argv[], char *const envp[]);
|
||||
|
||||
#endif
|
527
unix/install-sh
527
unix/install-sh
@ -1,527 +0,0 @@
|
||||
#!/bin/sh
|
||||
# install - install a program, script, or datafile
|
||||
|
||||
scriptversion=2011-11-20.07; # UTC
|
||||
|
||||
# This originates from X11R5 (mit/util/scripts/install.sh), which was
|
||||
# later released in X11R6 (xc/config/util/install.sh) with the
|
||||
# following copyright and license.
|
||||
#
|
||||
# Copyright (C) 1994 X Consortium
|
||||
#
|
||||
# Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
# of this software and associated documentation files (the "Software"), to
|
||||
# deal in the Software without restriction, including without limitation the
|
||||
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
||||
# sell copies of the Software, and to permit persons to whom the Software is
|
||||
# furnished to do so, subject to the following conditions:
|
||||
#
|
||||
# The above copyright notice and this permission notice shall be included in
|
||||
# all copies or substantial portions of the Software.
|
||||
#
|
||||
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
|
||||
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
|
||||
# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
#
|
||||
# Except as contained in this notice, the name of the X Consortium shall not
|
||||
# be used in advertising or otherwise to promote the sale, use or other deal-
|
||||
# ings in this Software without prior written authorization from the X Consor-
|
||||
# tium.
|
||||
#
|
||||
#
|
||||
# FSF changes to this file are in the public domain.
|
||||
#
|
||||
# Calling this script install-sh is preferred over install.sh, to prevent
|
||||
# 'make' implicit rules from creating a file called install from it
|
||||
# when there is no Makefile.
|
||||
#
|
||||
# This script is compatible with the BSD install script, but was written
|
||||
# from scratch.
|
||||
|
||||
nl='
|
||||
'
|
||||
IFS=" "" $nl"
|
||||
|
||||
# set DOITPROG to echo to test this script
|
||||
|
||||
# Don't use :- since 4.3BSD and earlier shells don't like it.
|
||||
doit=${DOITPROG-}
|
||||
if test -z "$doit"; then
|
||||
doit_exec=exec
|
||||
else
|
||||
doit_exec=$doit
|
||||
fi
|
||||
|
||||
# Put in absolute file names if you don't have them in your path;
|
||||
# or use environment vars.
|
||||
|
||||
chgrpprog=${CHGRPPROG-chgrp}
|
||||
chmodprog=${CHMODPROG-chmod}
|
||||
chownprog=${CHOWNPROG-chown}
|
||||
cmpprog=${CMPPROG-cmp}
|
||||
cpprog=${CPPROG-cp}
|
||||
mkdirprog=${MKDIRPROG-mkdir}
|
||||
mvprog=${MVPROG-mv}
|
||||
rmprog=${RMPROG-rm}
|
||||
stripprog=${STRIPPROG-strip}
|
||||
|
||||
posix_glob='?'
|
||||
initialize_posix_glob='
|
||||
test "$posix_glob" != "?" || {
|
||||
if (set -f) 2>/dev/null; then
|
||||
posix_glob=
|
||||
else
|
||||
posix_glob=:
|
||||
fi
|
||||
}
|
||||
'
|
||||
|
||||
posix_mkdir=
|
||||
|
||||
# Desired mode of installed file.
|
||||
mode=0755
|
||||
|
||||
chgrpcmd=
|
||||
chmodcmd=$chmodprog
|
||||
chowncmd=
|
||||
mvcmd=$mvprog
|
||||
rmcmd="$rmprog -f"
|
||||
stripcmd=
|
||||
|
||||
src=
|
||||
dst=
|
||||
dir_arg=
|
||||
dst_arg=
|
||||
|
||||
copy_on_change=false
|
||||
no_target_directory=
|
||||
|
||||
usage="\
|
||||
Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
|
||||
or: $0 [OPTION]... SRCFILES... DIRECTORY
|
||||
or: $0 [OPTION]... -t DIRECTORY SRCFILES...
|
||||
or: $0 [OPTION]... -d DIRECTORIES...
|
||||
|
||||
In the 1st form, copy SRCFILE to DSTFILE.
|
||||
In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
|
||||
In the 4th, create DIRECTORIES.
|
||||
|
||||
Options:
|
||||
--help display this help and exit.
|
||||
--version display version info and exit.
|
||||
|
||||
-c (ignored)
|
||||
-C install only if different (preserve the last data modification time)
|
||||
-d create directories instead of installing files.
|
||||
-g GROUP $chgrpprog installed files to GROUP.
|
||||
-m MODE $chmodprog installed files to MODE.
|
||||
-o USER $chownprog installed files to USER.
|
||||
-s $stripprog installed files.
|
||||
-t DIRECTORY install into DIRECTORY.
|
||||
-T report an error if DSTFILE is a directory.
|
||||
|
||||
Environment variables override the default commands:
|
||||
CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
|
||||
RMPROG STRIPPROG
|
||||
"
|
||||
|
||||
while test $# -ne 0; do
|
||||
case $1 in
|
||||
-c) ;;
|
||||
|
||||
-C) copy_on_change=true;;
|
||||
|
||||
-d) dir_arg=true;;
|
||||
|
||||
-g) chgrpcmd="$chgrpprog $2"
|
||||
shift;;
|
||||
|
||||
--help) echo "$usage"; exit $?;;
|
||||
|
||||
-m) mode=$2
|
||||
case $mode in
|
||||
*' '* | *' '* | *'
|
||||
'* | *'*'* | *'?'* | *'['*)
|
||||
echo "$0: invalid mode: $mode" >&2
|
||||
exit 1;;
|
||||
esac
|
||||
shift;;
|
||||
|
||||
-o) chowncmd="$chownprog $2"
|
||||
shift;;
|
||||
|
||||
-s) stripcmd=$stripprog;;
|
||||
|
||||
-t) dst_arg=$2
|
||||
# Protect names problematic for 'test' and other utilities.
|
||||
case $dst_arg in
|
||||
-* | [=\(\)!]) dst_arg=./$dst_arg;;
|
||||
esac
|
||||
shift;;
|
||||
|
||||
-T) no_target_directory=true;;
|
||||
|
||||
--version) echo "$0 $scriptversion"; exit $?;;
|
||||
|
||||
--) shift
|
||||
break;;
|
||||
|
||||
-*) echo "$0: invalid option: $1" >&2
|
||||
exit 1;;
|
||||
|
||||
*) break;;
|
||||
esac
|
||||
shift
|
||||
done
|
||||
|
||||
if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
|
||||
# When -d is used, all remaining arguments are directories to create.
|
||||
# When -t is used, the destination is already specified.
|
||||
# Otherwise, the last argument is the destination. Remove it from $@.
|
||||
for arg
|
||||
do
|
||||
if test -n "$dst_arg"; then
|
||||
# $@ is not empty: it contains at least $arg.
|
||||
set fnord "$@" "$dst_arg"
|
||||
shift # fnord
|
||||
fi
|
||||
shift # arg
|
||||
dst_arg=$arg
|
||||
# Protect names problematic for 'test' and other utilities.
|
||||
case $dst_arg in
|
||||
-* | [=\(\)!]) dst_arg=./$dst_arg;;
|
||||
esac
|
||||
done
|
||||
fi
|
||||
|
||||
if test $# -eq 0; then
|
||||
if test -z "$dir_arg"; then
|
||||
echo "$0: no input file specified." >&2
|
||||
exit 1
|
||||
fi
|
||||
# It's OK to call 'install-sh -d' without argument.
|
||||
# This can happen when creating conditional directories.
|
||||
exit 0
|
||||
fi
|
||||
|
||||
if test -z "$dir_arg"; then
|
||||
do_exit='(exit $ret); exit $ret'
|
||||
trap "ret=129; $do_exit" 1
|
||||
trap "ret=130; $do_exit" 2
|
||||
trap "ret=141; $do_exit" 13
|
||||
trap "ret=143; $do_exit" 15
|
||||
|
||||
# Set umask so as not to create temps with too-generous modes.
|
||||
# However, 'strip' requires both read and write access to temps.
|
||||
case $mode in
|
||||
# Optimize common cases.
|
||||
*644) cp_umask=133;;
|
||||
*755) cp_umask=22;;
|
||||
|
||||
*[0-7])
|
||||
if test -z "$stripcmd"; then
|
||||
u_plus_rw=
|
||||
else
|
||||
u_plus_rw='% 200'
|
||||
fi
|
||||
cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
|
||||
*)
|
||||
if test -z "$stripcmd"; then
|
||||
u_plus_rw=
|
||||
else
|
||||
u_plus_rw=,u+rw
|
||||
fi
|
||||
cp_umask=$mode$u_plus_rw;;
|
||||
esac
|
||||
fi
|
||||
|
||||
for src
|
||||
do
|
||||
# Protect names problematic for 'test' and other utilities.
|
||||
case $src in
|
||||
-* | [=\(\)!]) src=./$src;;
|
||||
esac
|
||||
|
||||
if test -n "$dir_arg"; then
|
||||
dst=$src
|
||||
dstdir=$dst
|
||||
test -d "$dstdir"
|
||||
dstdir_status=$?
|
||||
else
|
||||
|
||||
# Waiting for this to be detected by the "$cpprog $src $dsttmp" command
|
||||
# might cause directories to be created, which would be especially bad
|
||||
# if $src (and thus $dsttmp) contains '*'.
|
||||
if test ! -f "$src" && test ! -d "$src"; then
|
||||
echo "$0: $src does not exist." >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if test -z "$dst_arg"; then
|
||||
echo "$0: no destination specified." >&2
|
||||
exit 1
|
||||
fi
|
||||
dst=$dst_arg
|
||||
|
||||
# If destination is a directory, append the input filename; won't work
|
||||
# if double slashes aren't ignored.
|
||||
if test -d "$dst"; then
|
||||
if test -n "$no_target_directory"; then
|
||||
echo "$0: $dst_arg: Is a directory" >&2
|
||||
exit 1
|
||||
fi
|
||||
dstdir=$dst
|
||||
dst=$dstdir/`basename "$src"`
|
||||
dstdir_status=0
|
||||
else
|
||||
# Prefer dirname, but fall back on a substitute if dirname fails.
|
||||
dstdir=`
|
||||
(dirname "$dst") 2>/dev/null ||
|
||||
expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
|
||||
X"$dst" : 'X\(//\)[^/]' \| \
|
||||
X"$dst" : 'X\(//\)$' \| \
|
||||
X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
|
||||
echo X"$dst" |
|
||||
sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
|
||||
s//\1/
|
||||
q
|
||||
}
|
||||
/^X\(\/\/\)[^/].*/{
|
||||
s//\1/
|
||||
q
|
||||
}
|
||||
/^X\(\/\/\)$/{
|
||||
s//\1/
|
||||
q
|
||||
}
|
||||
/^X\(\/\).*/{
|
||||
s//\1/
|
||||
q
|
||||
}
|
||||
s/.*/./; q'
|
||||
`
|
||||
|
||||
test -d "$dstdir"
|
||||
dstdir_status=$?
|
||||
fi
|
||||
fi
|
||||
|
||||
obsolete_mkdir_used=false
|
||||
|
||||
if test $dstdir_status != 0; then
|
||||
case $posix_mkdir in
|
||||
'')
|
||||
# Create intermediate dirs using mode 755 as modified by the umask.
|
||||
# This is like FreeBSD 'install' as of 1997-10-28.
|
||||
umask=`umask`
|
||||
case $stripcmd.$umask in
|
||||
# Optimize common cases.
|
||||
*[2367][2367]) mkdir_umask=$umask;;
|
||||
.*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
|
||||
|
||||
*[0-7])
|
||||
mkdir_umask=`expr $umask + 22 \
|
||||
- $umask % 100 % 40 + $umask % 20 \
|
||||
- $umask % 10 % 4 + $umask % 2
|
||||
`;;
|
||||
*) mkdir_umask=$umask,go-w;;
|
||||
esac
|
||||
|
||||
# With -d, create the new directory with the user-specified mode.
|
||||
# Otherwise, rely on $mkdir_umask.
|
||||
if test -n "$dir_arg"; then
|
||||
mkdir_mode=-m$mode
|
||||
else
|
||||
mkdir_mode=
|
||||
fi
|
||||
|
||||
posix_mkdir=false
|
||||
case $umask in
|
||||
*[123567][0-7][0-7])
|
||||
# POSIX mkdir -p sets u+wx bits regardless of umask, which
|
||||
# is incompatible with FreeBSD 'install' when (umask & 300) != 0.
|
||||
;;
|
||||
*)
|
||||
tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
|
||||
trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
|
||||
|
||||
if (umask $mkdir_umask &&
|
||||
exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
|
||||
then
|
||||
if test -z "$dir_arg" || {
|
||||
# Check for POSIX incompatibilities with -m.
|
||||
# HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
|
||||
# other-writable bit of parent directory when it shouldn't.
|
||||
# FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
|
||||
ls_ld_tmpdir=`ls -ld "$tmpdir"`
|
||||
case $ls_ld_tmpdir in
|
||||
d????-?r-*) different_mode=700;;
|
||||
d????-?--*) different_mode=755;;
|
||||
*) false;;
|
||||
esac &&
|
||||
$mkdirprog -m$different_mode -p -- "$tmpdir" && {
|
||||
ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
|
||||
test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
|
||||
}
|
||||
}
|
||||
then posix_mkdir=:
|
||||
fi
|
||||
rmdir "$tmpdir/d" "$tmpdir"
|
||||
else
|
||||
# Remove any dirs left behind by ancient mkdir implementations.
|
||||
rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
|
||||
fi
|
||||
trap '' 0;;
|
||||
esac;;
|
||||
esac
|
||||
|
||||
if
|
||||
$posix_mkdir && (
|
||||
umask $mkdir_umask &&
|
||||
$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
|
||||
)
|
||||
then :
|
||||
else
|
||||
|
||||
# The umask is ridiculous, or mkdir does not conform to POSIX,
|
||||
# or it failed possibly due to a race condition. Create the
|
||||
# directory the slow way, step by step, checking for races as we go.
|
||||
|
||||
case $dstdir in
|
||||
/*) prefix='/';;
|
||||
[-=\(\)!]*) prefix='./';;
|
||||
*) prefix='';;
|
||||
esac
|
||||
|
||||
eval "$initialize_posix_glob"
|
||||
|
||||
oIFS=$IFS
|
||||
IFS=/
|
||||
$posix_glob set -f
|
||||
set fnord $dstdir
|
||||
shift
|
||||
$posix_glob set +f
|
||||
IFS=$oIFS
|
||||
|
||||
prefixes=
|
||||
|
||||
for d
|
||||
do
|
||||
test X"$d" = X && continue
|
||||
|
||||
prefix=$prefix$d
|
||||
if test -d "$prefix"; then
|
||||
prefixes=
|
||||
else
|
||||
if $posix_mkdir; then
|
||||
(umask=$mkdir_umask &&
|
||||
$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
|
||||
# Don't fail if two instances are running concurrently.
|
||||
test -d "$prefix" || exit 1
|
||||
else
|
||||
case $prefix in
|
||||
*\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
|
||||
*) qprefix=$prefix;;
|
||||
esac
|
||||
prefixes="$prefixes '$qprefix'"
|
||||
fi
|
||||
fi
|
||||
prefix=$prefix/
|
||||
done
|
||||
|
||||
if test -n "$prefixes"; then
|
||||
# Don't fail if two instances are running concurrently.
|
||||
(umask $mkdir_umask &&
|
||||
eval "\$doit_exec \$mkdirprog $prefixes") ||
|
||||
test -d "$dstdir" || exit 1
|
||||
obsolete_mkdir_used=true
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
|
||||
if test -n "$dir_arg"; then
|
||||
{ test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
|
||||
{ test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
|
||||
{ test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
|
||||
test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
|
||||
else
|
||||
|
||||
# Make a couple of temp file names in the proper directory.
|
||||
dsttmp=$dstdir/_inst.$$_
|
||||
rmtmp=$dstdir/_rm.$$_
|
||||
|
||||
# Trap to clean up those temp files at exit.
|
||||
trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
|
||||
|
||||
# Copy the file name to the temp name.
|
||||
(umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
|
||||
|
||||
# and set any options; do chmod last to preserve setuid bits.
|
||||
#
|
||||
# If any of these fail, we abort the whole thing. If we want to
|
||||
# ignore errors from any of these, just make sure not to ignore
|
||||
# errors from the above "$doit $cpprog $src $dsttmp" command.
|
||||
#
|
||||
{ test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
|
||||
{ test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
|
||||
{ test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
|
||||
{ test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
|
||||
|
||||
# If -C, don't bother to copy if it wouldn't change the file.
|
||||
if $copy_on_change &&
|
||||
old=`LC_ALL=C ls -dlL "$dst" 2>/dev/null` &&
|
||||
new=`LC_ALL=C ls -dlL "$dsttmp" 2>/dev/null` &&
|
||||
|
||||
eval "$initialize_posix_glob" &&
|
||||
$posix_glob set -f &&
|
||||
set X $old && old=:$2:$4:$5:$6 &&
|
||||
set X $new && new=:$2:$4:$5:$6 &&
|
||||
$posix_glob set +f &&
|
||||
|
||||
test "$old" = "$new" &&
|
||||
$cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
|
||||
then
|
||||
rm -f "$dsttmp"
|
||||
else
|
||||
# Rename the file to the real destination.
|
||||
$doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
|
||||
|
||||
# The rename failed, perhaps because mv can't rename something else
|
||||
# to itself, or perhaps because mv is so ancient that it does not
|
||||
# support -f.
|
||||
{
|
||||
# Now remove or move aside any old file at destination location.
|
||||
# We try this two ways since rm can't unlink itself on some
|
||||
# systems and the destination file might be busy for other
|
||||
# reasons. In this case, the final cleanup might fail but the new
|
||||
# file should still install successfully.
|
||||
{
|
||||
test ! -f "$dst" ||
|
||||
$doit $rmcmd -f "$dst" 2>/dev/null ||
|
||||
{ $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
|
||||
{ $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
|
||||
} ||
|
||||
{ echo "$0: cannot unlink or rename $dst" >&2
|
||||
(exit 1); exit 1
|
||||
}
|
||||
} &&
|
||||
|
||||
# Now rename the file to the real destination.
|
||||
$doit $mvcmd "$dsttmp" "$dst"
|
||||
}
|
||||
fi || exit 1
|
||||
|
||||
trap '' 0
|
||||
fi
|
||||
done
|
||||
|
||||
# Local variables:
|
||||
# eval: (add-hook 'write-file-hooks 'time-stamp)
|
||||
# time-stamp-start: "scriptversion="
|
||||
# time-stamp-format: "%:y-%02m-%02d.%02H"
|
||||
# time-stamp-time-zone: "UTC"
|
||||
# time-stamp-end: "; # UTC"
|
||||
# End:
|
@ -1 +0,0 @@
|
||||
POSIX functionality.
|
42
unix/tests/.gitignore
vendored
42
unix/tests/.gitignore
vendored
@ -1,42 +0,0 @@
|
||||
.hpc*/
|
||||
*.o
|
||||
*.hi
|
||||
*.comp.std*
|
||||
*.run.std*
|
||||
*.eventlog
|
||||
*.genscript
|
||||
*.exe
|
||||
*.interp.stderr
|
||||
*.interp.stdout
|
||||
|
||||
# specific files
|
||||
/T1185
|
||||
/T3816
|
||||
/T8108
|
||||
/executeFile001
|
||||
/fdReadBuf001
|
||||
/fileStatus
|
||||
/fileStatusByteString
|
||||
/fileexist01
|
||||
/forkprocess01
|
||||
/getEnvironment01
|
||||
/getEnvironment02
|
||||
/getGroupEntryForName
|
||||
/getUserEntryForName
|
||||
/libposix/po003.out
|
||||
/libposix/posix002
|
||||
/libposix/posix003
|
||||
/libposix/posix004
|
||||
/libposix/posix005
|
||||
/libposix/posix006
|
||||
/libposix/posix009
|
||||
/libposix/posix010
|
||||
/libposix/posix014
|
||||
/processGroup001
|
||||
/processGroup002
|
||||
/queryfdoption01
|
||||
/resourceLimit
|
||||
/signals001
|
||||
/signals002
|
||||
/signals004
|
||||
/user001
|
@ -1,7 +0,0 @@
|
||||
# This Makefile runs the tests using GHC's testsuite framework. It
|
||||
# assumes the package is part of a GHC build tree with the testsuite
|
||||
# installed in ../../../testsuite.
|
||||
|
||||
TOP=../../../testsuite
|
||||
include $(TOP)/mk/boilerplate.mk
|
||||
include $(TOP)/mk/test.mk
|
@ -1,24 +0,0 @@
|
||||
module Main where
|
||||
|
||||
import Control.Concurrent
|
||||
import System.Posix
|
||||
import System.IO
|
||||
import System.Exit
|
||||
|
||||
main =
|
||||
do putStrLn "running..."
|
||||
(stdinr, stdinw) <- createPipe
|
||||
(stdoutr, stdoutw) <- createPipe
|
||||
pid <- forkProcess $ do hw <- fdToHandle stdoutw
|
||||
hr <- fdToHandle stdinr
|
||||
closeFd stdinw
|
||||
hGetContents hr >>= hPutStr hw
|
||||
hClose hr
|
||||
hClose hw
|
||||
exitImmediately ExitSuccess
|
||||
threadDelay 100000
|
||||
closeFd stdoutw
|
||||
closeFd stdinw
|
||||
hr2 <- fdToHandle stdoutr
|
||||
hGetContents hr2 >>= putStr
|
||||
getProcessStatus True False pid >>= print
|
@ -1,2 +0,0 @@
|
||||
running...
|
||||
Just (Exited ExitSuccess)
|
@ -1,4 +0,0 @@
|
||||
import System.Posix
|
||||
main = do
|
||||
getAllGroupEntries >>= print . (>0) . length
|
||||
getAllGroupEntries >>= print . (>0) . length
|
@ -1,2 +0,0 @@
|
||||
True
|
||||
True
|
@ -1,8 +0,0 @@
|
||||
import Control.Monad
|
||||
import Control.Concurrent
|
||||
import System.Posix.User
|
||||
|
||||
main = do
|
||||
void $ forkIO $ forever $ getGroupEntryForID 0
|
||||
void $ forkIO $ forever $ getGroupEntryForID 0
|
||||
threadDelay (3*1000*1000)
|
@ -1,74 +0,0 @@
|
||||
|
||||
test('signals001', normal, compile_and_run, ['-package unix -cpp'])
|
||||
test('signals002', [], compile_and_run, ['-package unix'])
|
||||
test('fileexist01', normal, compile_and_run, ['-package unix'])
|
||||
|
||||
# test #4512
|
||||
test('forkprocess01', extra_ways(['threaded1_ls']), compile_and_run,
|
||||
['-package unix'])
|
||||
|
||||
#
|
||||
# user001 may fail due to this bug in glibc:
|
||||
# http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=466647
|
||||
#
|
||||
# Ticket #1487. The glibc implementation of getlogin, which is called by
|
||||
# getLoginName, requires that a terminal is connected to filedescriptor 0.
|
||||
# See: https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/getlogin.c
|
||||
# Therefore we have to omit the 'ghci' way, because it relies on redirecting
|
||||
# stdin from file.
|
||||
#
|
||||
# But getLoginName also fails on GNU/Linux when using a terminal emulator
|
||||
# that doesn't write login records to /var/run/utmp. Running:
|
||||
# $ logname
|
||||
# should print your login name. If it doesn't, the getLoginName test in user001
|
||||
# would fail, so we disabled that test.
|
||||
#
|
||||
test('user001', omit_ways(['ghci']), compile_and_run, ['-package unix'])
|
||||
test('resourceLimit', normal, compile_and_run, ['-package unix'])
|
||||
|
||||
x86FreeBsdFail = when(platform('i386-unknown-freebsd'), expect_fail)
|
||||
|
||||
test('queryfdoption01', [omit_ways(['ghci']), x86FreeBsdFail], compile_and_run,
|
||||
['-package unix'])
|
||||
test('getEnvironment01', x86FreeBsdFail, compile_and_run, ['-package unix'])
|
||||
test('getEnvironment02', x86FreeBsdFail, compile_and_run, ['-package unix'])
|
||||
test('getGroupEntryForName', [x86FreeBsdFail, exit_code(1)], compile_and_run,
|
||||
['-package unix'])
|
||||
test('getUserEntryForName', [x86FreeBsdFail, exit_code(1)], compile_and_run,
|
||||
['-package unix'])
|
||||
|
||||
|
||||
test('signals004', normal, compile_and_run, ['-package unix'])
|
||||
|
||||
if ('threaded1' in config.run_ways):
|
||||
only_threaded_ways = only_ways(['ghci','threaded1','threaded2'])
|
||||
else:
|
||||
only_threaded_ways = skip
|
||||
|
||||
test('fdReadBuf001', only_threaded_ways, compile_and_run, ['-package unix'])
|
||||
|
||||
test('fileStatus',
|
||||
extra_clean(['dir', 'regular', 'link-dir', 'link-regular']),
|
||||
compile_and_run,
|
||||
['-package unix'])
|
||||
|
||||
test('fileStatusByteString',
|
||||
extra_clean(['dir', 'regular', 'link-dir', 'link-regular']),
|
||||
compile_and_run,
|
||||
['-package unix'])
|
||||
|
||||
|
||||
test('T1185', normal, compile_and_run, ['-package unix'])
|
||||
|
||||
# This test fails for me on x86/Linux with a "does not exist" error.
|
||||
# Running with strace shows it is trying to talk to winbindd (part of
|
||||
# Samba), so I think the failure has nothing to do with GHC. Also it
|
||||
# works on a different machine that doesn't have Samba installed.
|
||||
# --SDM 18/05/2010
|
||||
test('T3816', normal, compile_and_run, ['-package unix'])
|
||||
|
||||
test('processGroup001', normal, compile_and_run, ['-package unix'])
|
||||
test('processGroup002', normal, compile_and_run, ['-package unix'])
|
||||
test('executeFile001', omit_ways(prof_ways + ['threaded2']), compile_and_run, ['-package unix'])
|
||||
|
||||
test('T8108', normal, compile_and_run, ['-package unix'])
|
@ -1,6 +0,0 @@
|
||||
|
||||
import System.Posix.Process
|
||||
|
||||
main :: IO ()
|
||||
main = executeFile "echo" True ["arg1", "ar g2"] Nothing
|
||||
|
@ -1 +0,0 @@
|
||||
arg1 ar g2
|
@ -1,27 +0,0 @@
|
||||
{-# LANGUAGE NoMonomorphismRestriction #-}
|
||||
import System.Posix
|
||||
import Control.Monad
|
||||
import Foreign
|
||||
import Control.Concurrent
|
||||
import Data.Char
|
||||
import System.Exit
|
||||
|
||||
size = 10000
|
||||
block = 512
|
||||
|
||||
main = do
|
||||
(rd,wr) <- createPipe
|
||||
let bytes = take size (map (fromIntegral.ord) (cycle ['a'..'z']))
|
||||
allocaBytes size $ \p -> do
|
||||
pokeArray p bytes
|
||||
forkIO $ do r <- fdWriteBuf wr p (fromIntegral size)
|
||||
when (fromIntegral r /= size) $ error "fdWriteBuf failed"
|
||||
allocaBytes block $ \p -> do
|
||||
let loop text = do
|
||||
r <- fdReadBuf rd p block
|
||||
let (chunk,rest) = splitAt (fromIntegral r) text
|
||||
chars <- peekArray (fromIntegral r) p
|
||||
when (chars /= chunk) $ error $ "mismatch: expected="++show chunk++", found="++show chars
|
||||
when (null rest) $ exitWith ExitSuccess
|
||||
loop rest
|
||||
loop bytes
|
@ -1,109 +0,0 @@
|
||||
|
||||
-- GHC trac #2969
|
||||
|
||||
import System.Posix.Files
|
||||
import System.Posix.Directory
|
||||
import System.Posix.IO
|
||||
import Control.Exception as E
|
||||
import Control.Monad
|
||||
|
||||
main = do
|
||||
cleanup
|
||||
fs <- testRegular
|
||||
ds <- testDir
|
||||
testSymlink fs ds
|
||||
cleanup
|
||||
|
||||
regular = "regular"
|
||||
dir = "dir"
|
||||
link_regular = "link-regular"
|
||||
link_dir = "link-dir"
|
||||
|
||||
testRegular = do
|
||||
createFile regular ownerReadMode
|
||||
(fs, _) <- getStatus regular
|
||||
let expected = (False,False,False,True,False,False,False)
|
||||
actual = snd (statusElements fs)
|
||||
when (actual /= expected) $
|
||||
fail "unexpected file status bits for regular file"
|
||||
return fs
|
||||
|
||||
testDir = do
|
||||
createDirectory dir ownerReadMode
|
||||
(ds, _) <- getStatus dir
|
||||
let expected = (False,False,False,False,True,False,False)
|
||||
actual = snd (statusElements ds)
|
||||
when (actual /= expected) $
|
||||
fail "unexpected file status bits for directory"
|
||||
return ds
|
||||
|
||||
testSymlink fs ds = do
|
||||
createSymbolicLink regular link_regular
|
||||
createSymbolicLink dir link_dir
|
||||
(fs', ls) <- getStatus link_regular
|
||||
(ds', lds) <- getStatus link_dir
|
||||
|
||||
let expected = (False,False,False,False,False,True,False)
|
||||
actualF = snd (statusElements ls)
|
||||
actualD = snd (statusElements lds)
|
||||
|
||||
when (actualF /= expected) $
|
||||
fail "unexpected file status bits for symlink to regular file"
|
||||
|
||||
when (actualD /= expected) $
|
||||
fail "unexpected file status bits for symlink to directory"
|
||||
|
||||
when (statusElements fs /= statusElements fs') $
|
||||
fail "status for a file does not match when it's accessed via a symlink"
|
||||
|
||||
when (statusElements ds /= statusElements ds') $
|
||||
fail "status for a directory does not match when it's accessed via a symlink"
|
||||
|
||||
cleanup = do
|
||||
ignoreIOExceptions $ removeDirectory dir
|
||||
mapM_ (ignoreIOExceptions . removeLink)
|
||||
[regular, link_regular, link_dir]
|
||||
|
||||
ignoreIOExceptions io = io `E.catch`
|
||||
((\_ -> return ()) :: IOException -> IO ())
|
||||
|
||||
getStatus f = do
|
||||
fs <- getFileStatus f
|
||||
ls <- getSymbolicLinkStatus f
|
||||
|
||||
fd <- openFd f ReadOnly defaultFileFlags
|
||||
fs' <- getFdStatus fd
|
||||
|
||||
when (statusElements fs /= statusElements fs') $
|
||||
fail "getFileStatus and getFdStatus give inconsistent results"
|
||||
|
||||
when (not (isSymbolicLink ls) && statusElements fs /= statusElements fs') $
|
||||
fail $ "getFileStatus and getSymbolicLinkStatus give inconsistent results "
|
||||
++ "on a file that is not a symbolic link"
|
||||
|
||||
return (fs, ls)
|
||||
|
||||
-- Yay for 20-element tuples!
|
||||
statusElements fs = (,)
|
||||
(deviceID fs
|
||||
,fileMode fs
|
||||
,linkCount fs
|
||||
,fileOwner fs
|
||||
,fileGroup fs
|
||||
,specialDeviceID fs
|
||||
,fileSize fs
|
||||
,accessTime fs
|
||||
,accessTimeHiRes fs
|
||||
,modificationTime fs
|
||||
,modificationTimeHiRes fs
|
||||
,statusChangeTime fs
|
||||
,statusChangeTimeHiRes fs
|
||||
)
|
||||
(isBlockDevice fs
|
||||
,isCharacterDevice fs
|
||||
,isNamedPipe fs
|
||||
,isRegularFile fs
|
||||
,isDirectory fs
|
||||
,isSymbolicLink fs
|
||||
,isSocket fs
|
||||
)
|
@ -1,108 +0,0 @@
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
|
||||
-- GHC trac #2969
|
||||
|
||||
import System.Posix.ByteString
|
||||
import Control.Exception as E
|
||||
import Control.Monad
|
||||
|
||||
main = do
|
||||
cleanup
|
||||
fs <- testRegular
|
||||
ds <- testDir
|
||||
testSymlink fs ds
|
||||
cleanup
|
||||
|
||||
regular = "regular2"
|
||||
dir = "dir2"
|
||||
link_regular = "link-regular2"
|
||||
link_dir = "link-dir2"
|
||||
|
||||
testRegular = do
|
||||
createFile regular ownerReadMode
|
||||
(fs, _) <- getStatus regular
|
||||
let expected = (False,False,False,True,False,False,False)
|
||||
actual = snd (statusElements fs)
|
||||
when (actual /= expected) $
|
||||
fail "unexpected file status bits for regular file"
|
||||
return fs
|
||||
|
||||
testDir = do
|
||||
createDirectory dir ownerReadMode
|
||||
(ds, _) <- getStatus dir
|
||||
let expected = (False,False,False,False,True,False,False)
|
||||
actual = snd (statusElements ds)
|
||||
when (actual /= expected) $
|
||||
fail "unexpected file status bits for directory"
|
||||
return ds
|
||||
|
||||
testSymlink fs ds = do
|
||||
createSymbolicLink regular link_regular
|
||||
createSymbolicLink dir link_dir
|
||||
(fs', ls) <- getStatus link_regular
|
||||
(ds', lds) <- getStatus link_dir
|
||||
|
||||
let expected = (False,False,False,False,False,True,False)
|
||||
actualF = snd (statusElements ls)
|
||||
actualD = snd (statusElements lds)
|
||||
|
||||
when (actualF /= expected) $
|
||||
fail "unexpected file status bits for symlink to regular file"
|
||||
|
||||
when (actualD /= expected) $
|
||||
fail "unexpected file status bits for symlink to directory"
|
||||
|
||||
when (statusElements fs /= statusElements fs') $
|
||||
fail "status for a file does not match when it's accessed via a symlink"
|
||||
|
||||
when (statusElements ds /= statusElements ds') $
|
||||
fail "status for a directory does not match when it's accessed via a symlink"
|
||||
|
||||
cleanup = do
|
||||
ignoreIOExceptions $ removeDirectory dir
|
||||
mapM_ (ignoreIOExceptions . removeLink)
|
||||
[regular, link_regular, link_dir]
|
||||
|
||||
ignoreIOExceptions io = io `E.catch`
|
||||
((\_ -> return ()) :: IOException -> IO ())
|
||||
|
||||
getStatus f = do
|
||||
fs <- getFileStatus f
|
||||
ls <- getSymbolicLinkStatus f
|
||||
|
||||
fd <- openFd f ReadOnly defaultFileFlags
|
||||
fs' <- getFdStatus fd
|
||||
|
||||
when (statusElements fs /= statusElements fs') $
|
||||
fail "getFileStatus and getFdStatus give inconsistent results"
|
||||
|
||||
when (not (isSymbolicLink ls) && statusElements fs /= statusElements fs') $
|
||||
fail $ "getFileStatus and getSymbolicLinkStatus give inconsistent results "
|
||||
++ "on a file that is not a symbolic link"
|
||||
|
||||
return (fs, ls)
|
||||
|
||||
-- Yay for 20-element tuples!
|
||||
statusElements fs = (,)
|
||||
(deviceID fs
|
||||
,fileMode fs
|
||||
,linkCount fs
|
||||
,fileOwner fs
|
||||
,fileGroup fs
|
||||
,specialDeviceID fs
|
||||
,fileSize fs
|
||||
,accessTime fs
|
||||
,accessTimeHiRes fs
|
||||
,modificationTime fs
|
||||
,modificationTimeHiRes fs
|
||||
,statusChangeTime fs
|
||||
,statusChangeTimeHiRes fs
|
||||
)
|
||||
(isBlockDevice fs
|
||||
,isCharacterDevice fs
|
||||
,isNamedPipe fs
|
||||
,isRegularFile fs
|
||||
,isDirectory fs
|
||||
,isSymbolicLink fs
|
||||
,isSocket fs
|
||||
)
|
@ -1,5 +0,0 @@
|
||||
-- test System.Posix.fileExist
|
||||
import System.Posix
|
||||
main = do
|
||||
fileExist "fileexist01.hs" >>= print
|
||||
fileExist "does not exist" >>= print
|
@ -1,2 +0,0 @@
|
||||
True
|
||||
False
|
@ -1,9 +0,0 @@
|
||||
-- Test that we can call exitFailure in a forked process, and have it
|
||||
-- communicated properly to the parent.
|
||||
import System.Exit
|
||||
import System.Posix.Process
|
||||
main = do
|
||||
p <- forkProcess $ exitWith (ExitFailure 72)
|
||||
r <- getProcessStatus True False p
|
||||
print r
|
||||
|
@ -1 +0,0 @@
|
||||
Just (Exited (ExitFailure 72))
|
@ -1,8 +0,0 @@
|
||||
|
||||
-- test for trac #781 (GHCi on x86_64, cannot link to static data in
|
||||
-- shared libs)
|
||||
|
||||
import System.Posix.Env
|
||||
|
||||
main = getEnvironment >>= (print . (0 <=) . length)
|
||||
|
@ -1 +0,0 @@
|
||||
True
|
@ -1,8 +0,0 @@
|
||||
|
||||
-- test for trac #781 (GHCi on x86_64, cannot link to static data in
|
||||
-- shared libs)
|
||||
|
||||
import System.Posix.Env.ByteString
|
||||
|
||||
main = getEnvironment >>= (print . (0 <=) . length)
|
||||
|
@ -1 +0,0 @@
|
||||
True
|
@ -1,5 +0,0 @@
|
||||
|
||||
import System.Posix.User
|
||||
|
||||
main :: IO ()
|
||||
main = getGroupEntryForName "thisIsNotMeantToExist" >> return ()
|
@ -1 +0,0 @@
|
||||
getGroupEntryForName: getGroupEntryForName: does not exist (no such group)
|
@ -1,5 +0,0 @@
|
||||
|
||||
import System.Posix.User
|
||||
|
||||
main :: IO ()
|
||||
main = getUserEntryForName "thisIsNotMeantToExist" >> return ()
|
@ -1 +0,0 @@
|
||||
getUserEntryForName: getUserEntryForName: does not exist (no such user)
|
@ -1,7 +0,0 @@
|
||||
# This Makefile runs the tests using GHC's testsuite framework. It
|
||||
# assumes the package is part of a GHC build tree with the testsuite
|
||||
# installed in ../../../testsuite.
|
||||
|
||||
TOP=../../../../testsuite
|
||||
include $(TOP)/mk/boilerplate.mk
|
||||
include $(TOP)/mk/test.mk
|
@ -1,16 +0,0 @@
|
||||
test('posix002', [ reqlib('unix'), omit_ways(prof_ways), fragile_for(16550, ['threaded2']) ],
|
||||
compile_and_run, [''])
|
||||
|
||||
# Skip on mingw32: assumes existence of 'pwd' and /tmp
|
||||
test('posix003', [when(opsys('mingw32'), skip), extra_clean(['po003.out'])],
|
||||
compile_and_run, [''])
|
||||
|
||||
test('posix004', [ reqlib('unix') ], compile_and_run, [''])
|
||||
|
||||
test('posix005', [reqlib('unix') ], compile_and_run, [''])
|
||||
|
||||
test('posix006', reqlib('unix'), compile_and_run, [''])
|
||||
test('posix009', [ omit_ways(threaded_ways), reqlib('unix') ], compile_and_run, [''])
|
||||
test('posix010', reqlib('unix'), compile_and_run, [''])
|
||||
|
||||
test('posix014', [ reqlib('unix') ], compile_and_run, [''])
|
@ -1,4 +0,0 @@
|
||||
import System.Posix.Process
|
||||
|
||||
main =
|
||||
executeFile "printenv" True [] (Just [("ONE","1"),("TWO","2")])
|
@ -1,2 +0,0 @@
|
||||
ONE=1
|
||||
TWO=2
|
@ -1,17 +0,0 @@
|
||||
|
||||
import Control.Monad
|
||||
import Data.Char
|
||||
import System.Exit
|
||||
import System.IO
|
||||
import System.Process
|
||||
|
||||
main = do hw <- openFile "po003.out" WriteMode
|
||||
ph <- runProcess "pwd" [] (Just "/dev") Nothing Nothing (Just hw) Nothing
|
||||
ec <- waitForProcess ph
|
||||
hClose hw
|
||||
unless (ec == ExitSuccess) $ error "pwd failed"
|
||||
hr <- openFile "po003.out" ReadMode
|
||||
output <- hGetContents hr
|
||||
putStrLn ("Got: " ++ show (filter (not . isSpace) output))
|
||||
hClose hr
|
||||
|
@ -1 +0,0 @@
|
||||
Got: "/dev"
|
@ -1,48 +0,0 @@
|
||||
|
||||
import System.Exit (ExitCode(..), exitWith)
|
||||
import System.Posix.Process
|
||||
import System.Posix.Signals
|
||||
|
||||
main = do test1
|
||||
test2
|
||||
test3
|
||||
test4
|
||||
putStrLn "I'm happy."
|
||||
|
||||
test1 = do
|
||||
-- Force SIGFPE exceptions to not be ignored. Under some
|
||||
-- circumstances this test will be run with SIGFPE
|
||||
-- ignored, see #7399
|
||||
installHandler sigFPE Default Nothing
|
||||
forkProcess $ raiseSignal floatingPointException
|
||||
Just (pid, tc) <- getAnyProcessStatus True False
|
||||
case tc of
|
||||
Terminated sig _ | sig == floatingPointException -> return ()
|
||||
_ -> error "unexpected termination cause"
|
||||
|
||||
test2 = do
|
||||
forkProcess $ exitImmediately (ExitFailure 42)
|
||||
Just (pid, tc) <- getAnyProcessStatus True False
|
||||
case tc of
|
||||
Exited (ExitFailure 42) -> return ()
|
||||
_ -> error "unexpected termination cause (2)"
|
||||
|
||||
test3 = do
|
||||
forkProcess $ exitImmediately ExitSuccess
|
||||
Just (pid, tc) <- getAnyProcessStatus True False
|
||||
case tc of
|
||||
Exited ExitSuccess -> return ()
|
||||
_ -> error "unexpected termination cause (3)"
|
||||
|
||||
test4 = do
|
||||
forkProcess $ raiseSignal softwareStop
|
||||
Just (pid, tc) <- getAnyProcessStatus True True
|
||||
case tc of
|
||||
Stopped sig | sig == softwareStop -> do
|
||||
signalProcess killProcess pid
|
||||
Just (pid, tc) <- getAnyProcessStatus True True
|
||||
case tc of
|
||||
Terminated sig _ | sig == killProcess -> return ()
|
||||
_ -> error "unexpected termination cause (5)"
|
||||
_ -> error "unexpected termination cause (4)"
|
||||
|
@ -1 +0,0 @@
|
||||
I'm happy.
|
@ -1,24 +0,0 @@
|
||||
import Data.List (sort)
|
||||
import System.IO
|
||||
import System.Posix.Env
|
||||
|
||||
printEnv :: IO ()
|
||||
printEnv = getEnvironment >>= print . sort
|
||||
|
||||
main = do
|
||||
hSetBuffering stdout NoBuffering
|
||||
term <- getEnv "TERM"
|
||||
maybe (return ()) putStrLn term
|
||||
setEnvironment [("one","1"),("two","2")]
|
||||
printEnv
|
||||
setEnv "foo" "bar" True
|
||||
printEnv
|
||||
setEnv "foo" "baz" True
|
||||
printEnv
|
||||
setEnv "fu" "bar" True
|
||||
printEnv
|
||||
unsetEnv "foo"
|
||||
printEnv
|
||||
clearEnv
|
||||
printEnv
|
||||
|
@ -1,7 +0,0 @@
|
||||
vt100
|
||||
[("one","1"),("two","2")]
|
||||
[("foo","bar"),("one","1"),("two","2")]
|
||||
[("foo","baz"),("one","1"),("two","2")]
|
||||
[("foo","baz"),("fu","bar"),("one","1"),("two","2")]
|
||||
[("fu","bar"),("one","1"),("two","2")]
|
||||
[]
|
@ -1,18 +0,0 @@
|
||||
|
||||
import System.Posix.Time
|
||||
import System.Posix.Unistd
|
||||
import System.Posix.Signals
|
||||
|
||||
main = do start <- epochTime
|
||||
blockSignals reservedSignals -- see #4504
|
||||
sleep 1
|
||||
finish <- epochTime
|
||||
let slept = finish - start
|
||||
if slept >= 1 && slept <= 2
|
||||
then putStrLn "OK"
|
||||
else do putStr "Started: "
|
||||
print start
|
||||
putStr "Finished: "
|
||||
print finish
|
||||
putStr "Slept: "
|
||||
print slept
|
@ -1 +0,0 @@
|
||||
OK
|
@ -1,15 +0,0 @@
|
||||
import System.Posix.Signals
|
||||
import System.Posix.Unistd
|
||||
|
||||
main = do
|
||||
putStrLn "Blocking real time alarms."
|
||||
blockSignals (addSignal realTimeAlarm reservedSignals)
|
||||
putStrLn "Scheduling an alarm in 2 seconds..."
|
||||
scheduleAlarm 2
|
||||
putStrLn "Sleeping 5 seconds."
|
||||
sleep 5
|
||||
putStrLn "Woken up"
|
||||
ints <- getPendingSignals
|
||||
putStrLn "Checking pending interrupts for RealTimeAlarm"
|
||||
print (inSignalSet realTimeAlarm ints)
|
||||
|
@ -1,6 +0,0 @@
|
||||
Blocking real time alarms.
|
||||
Scheduling an alarm in 2 seconds...
|
||||
Sleeping 5 seconds.
|
||||
Woken up
|
||||
Checking pending interrupts for RealTimeAlarm
|
||||
True
|
@ -1,16 +0,0 @@
|
||||
import System.Posix
|
||||
|
||||
main = do
|
||||
root <- getUserEntryForName "root"
|
||||
putStrLn (ue2String root)
|
||||
root' <- getUserEntryForID (userID root)
|
||||
putStrLn (ue2String root')
|
||||
if homeDirectory root == homeDirectory root' &&
|
||||
userShell root == userShell root'
|
||||
then putStrLn "OK"
|
||||
else putStrLn "Mismatch"
|
||||
|
||||
ue2String ue = concat [name, ":", show uid, ":", show gid]
|
||||
where name = userName ue
|
||||
uid = userID ue
|
||||
gid = userGroupID ue
|
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in New Issue
Block a user