From deb7fc40495efba32b5fbc2ebee6001dd7604ecf Mon Sep 17 00:00:00 2001
From: hasufell <hasufell@hasufell.de>
Date: Sun, 9 Aug 2015 20:39:30 +0200
Subject: [PATCH] saving uncommitted changes in /etc prior to emerge run

---
 init.d/._cfg0000_qemu-binfmt | 139 +++++++++++++++++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100755 init.d/._cfg0000_qemu-binfmt

diff --git a/init.d/._cfg0000_qemu-binfmt b/init.d/._cfg0000_qemu-binfmt
new file mode 100755
index 0000000..3e518a9
--- /dev/null
+++ b/init.d/._cfg0000_qemu-binfmt
@@ -0,0 +1,139 @@
+#!/sbin/runscript
+# Copyright 1999-2014 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+# enable automatic i386/ARM/M68K/MIPS/SPARC/PPC/s390 program execution by the kernel
+
+# Defaulting to OC should be safe because it comes down to:
+#  - do we trust the interp itself to not be malicious?  yes; we built it.
+#  - do we trust the programs we're running?  ish; same permission as native
+#    binaries apply.  so if user can do bad stuff natively, cross isn't worse.
+: ${QEMU_BINFMT_FLAGS:=OC}
+
+depend() {
+    after procfs
+}
+
+start() {
+   ebegin "Registering qemu-user binaries (flags: ${QEMU_BINFMT_FLAGS})"
+
+   if [ ! -d /proc/sys/fs/binfmt_misc ] ; then
+      modprobe -q binfmt_misc
+   fi
+
+   if [ ! -d /proc/sys/fs/binfmt_misc ] ; then
+       eend $? "You need support for 'misc binaries' in your kernel!" || return
+   fi
+
+   if [ ! -f /proc/sys/fs/binfmt_misc/register ] ; then
+      mount -t binfmt_misc binfmt_misc /proc/sys/fs/binfmt_misc >/dev/null 2>&1
+      eend $? || return
+   fi
+
+   # probe cpu type
+   cpu=`uname -m`
+   case "$cpu" in
+      i386|i486|i586|i686|i86pc|BePC|x86_64)
+         cpu="i386"
+         ;;
+      m68k)
+         cpu="m68k"
+         ;;
+      mips*)
+         cpu="mips"
+      ;;
+      "Power Macintosh"|ppc|ppc64)
+         cpu="ppc"
+      ;;
+      armv[4-9]*)
+         cpu="arm"
+      ;;
+      sparc*)
+         cpu="sparc"
+      ;;
+   esac
+
+   # register the interpreter for each cpu except for the native one
+   if [ $cpu != "i386" -a -x "/usr/bin/qemu-i386" ] ; then
+      echo ':i386:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x03\x00:\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-i386:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+      echo ':i486:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x06\x00:\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-i386:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "alpha" -a -x "/usr/bin/qemu-alpha" ] ; then
+      echo ':alpha:M::\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x26\x90:\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-alpha:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "arm" -a -x "/usr/bin/qemu-arm" ] ; then
+      echo   ':arm:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\x00\xff\xfe\xff\xff\xff:/usr/bin/qemu-arm:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "arm" -a -x "/usr/bin/qemu-armeb" ] ; then
+      echo   ':armeb:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-armeb:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "aarch64" -a -x "/usr/bin/qemu-aarch64" ] ; then
+      echo ':aarch64:M::\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xb7\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-aarch64:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "sparc" -a -x "/usr/bin/qemu-sparc" ] ; then
+      echo   ':sparc:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x02:\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-sparc:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "ppc" -a -x "/usr/bin/qemu-ppc" ] ; then
+      echo   ':ppc:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x14:\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-ppc:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "m68k" -a -x "/usr/bin/qemu-m68k" ] ; then
+      #echo   'Please check cpu value and header information for m68k!'
+      echo   ':m68k:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x08:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-m68k:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "mips" -a -x "/usr/bin/qemu-mips" ] ; then
+      # FIXME: We could use the other endianness on a MIPS host.
+      echo   ':mips:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-mips:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "mips" -a -x "/usr/bin/qemu-mipsel" ] ; then
+      echo   ':mipsel:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-mipsel:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "mips" -a -x "/usr/bin/qemu-mipsn32" ] ; then
+      echo   ':mipsn32:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-mipsn32:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "mips" -a -x "/usr/bin/qemu-mipsn32el" ] ; then
+      echo   ':mipsn32el:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-mipsn32el:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "mips" -a -x "/usr/bin/qemu-mips64" ] ; then
+      echo   ':mips64:M::\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-mips64:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "mips" -a -x "/usr/bin/qemu-mips64el" ] ; then
+      echo   ':mips64el:M::\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-mips64el:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "sh" -a -x "/usr/bin/qemu-sh4" ] ; then
+      echo    ':sh4:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x2a\x00:\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-sh4:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "sh" -a -x "/usr/bin/qemu-sh4eb" ] ; then
+      echo    ':sh4eb:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x2a:\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-sh4eb:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   if [ $cpu != "s390x" -a -x "/usr/bin/qemu-s390x" ] ; then
+      echo   ':s390x:M::\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x16:\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-s390x:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+   fi
+   eend $?
+}
+
+stop() {
+   ebegin "Unregistering qemu-user binaries"
+   local arches
+
+   arches="${arches} i386 i486"
+   arches="${arches} alpha"
+   arches="${arches} arm armeb"
+   arches="${arches} aarch64"
+   arches="${arches} sparc"
+   arches="${arches} ppc"
+   arches="${arches} m68k"
+   arches="${arches} mips mipsel mipsn32 mipsn32el mips64 mips64el"
+   arches="${arches} sh4 sh4eb"
+   arches="${arches} s390x"
+
+   for a in ${arches}; do
+      if [ -f /proc/sys/fs/binfmt_misc/$a ] ; then
+         echo '-1' > /proc/sys/fs/binfmt_misc/$a
+      fi
+   done
+
+   eend $?
+}
+
+# vim: ts=4 :