From: Laurent Vivier <laurent@vivier.eu>
To: "Andreas Färber" <afaerber@suse.de>
Cc: Laurent Vivier <laurent@vivier.eu>,
Riku Voipio <riku.voipio@iki.fi>,
qemu-devel@nongnu.org, Alexander Graf <agraf@suse.de>
Subject: [Qemu-devel] [PATCH 1/3] scripts: extract ELF magics from qemu-binfmt-conf.sh
Date: Sun, 20 Jan 2013 00:20:58 +0100 [thread overview]
Message-ID: <1358637660-8625-1-git-send-email-laurent@vivier.eu> (raw)
In-Reply-To: <1358199410-19033-1-git-send-email-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
scripts/binfmts-magic | 93 ++++++++++++++++++++++++++++++++++++++
scripts/qemu-binfmt-conf.sh | 104 +++++++++++++++++++------------------------
2 files changed, 140 insertions(+), 57 deletions(-)
create mode 100644 scripts/binfmts-magic
mode change 100644 => 100755 scripts/qemu-binfmt-conf.sh
diff --git a/scripts/binfmts-magic b/scripts/binfmts-magic
new file mode 100644
index 0000000..13ac820
--- /dev/null
+++ b/scripts/binfmts-magic
@@ -0,0 +1,93 @@
+qemu_target_list="i386 i486 alpha arm sparc ppc m68k mips mipsel \
+ mipsn32 mipsn32el mips64 mips64el sh4 sh4eb s390x"
+
+i386_magic='\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x03\x00'
+i386_mask='\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'
+i386_family=i386
+
+i486_magic='\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x06\x00'
+i486_mask='\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'
+i486_family=i386
+
+alpha_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x26\x90'
+alpha_mask='\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'
+alpha_family=alpha
+
+arm_magic='\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00'
+arm_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'
+arm_family=arm
+
+armeb_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28'
+armeb_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff'
+armeb_family=arm
+
+sparc_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x02'
+sparc_mask='\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff'
+sparc_family=sparc
+
+ppc_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x14'
+ppc_mask='\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff'
+ppc_family=ppc
+
+m68k_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x04'
+m68k_mask='\xff\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff'
+m68k_family=m68k
+
+# FIXME: We could use the other endianness on a MIPS host.
+
+mips_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08'
+mips_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff'
+mips_family=mips
+
+mipsel_magic='\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00'
+mipsel_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'
+mipsel_family=mips
+
+mipsn32_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08'
+mipsn32_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff'
+mipsn32_family=mips
+
+mipsn32el_magic='\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00'
+mipsn32el_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'
+mipsn32el_family=mips
+
+mips64_magic='\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08'
+mips64_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff'
+mips64_family=mips
+
+mips64el_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00'
+mips64el_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'
+mips64el_family=mips
+
+sh4_magic='\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x2a\x00'
+sh4_mask='\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'
+sh4_family=sh4
+
+sh4eb_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x2a'
+sh4eb_mask='\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff'
+sh4eb_family=sh4
+
+s390x_magic='\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x16'
+s390x_mask='\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff'
+s390x_family=s390x
+
+qemu_get_family() {
+ cpu=$(uname -m)
+ case "$cpu" in
+ i386|i486|i586|i686|i86pc|BePC|x86_64)
+ echo "i386"
+ ;;
+ mips*)
+ echo "mips"
+ ;;
+ "Power Macintosh"|ppc64)
+ echo "ppc"
+ ;;
+ armv[4-9]*)
+ echo "arm"
+ ;;
+ *)
+ echo "$cpu"
+ ;;
+ esac
+}
diff --git a/scripts/qemu-binfmt-conf.sh b/scripts/qemu-binfmt-conf.sh
old mode 100644
new mode 100755
index 0da2618..6235637
--- a/scripts/qemu-binfmt-conf.sh
+++ b/scripts/qemu-binfmt-conf.sh
@@ -1,69 +1,59 @@
#!/bin/sh
# enable automatic i386/ARM/M68K/MIPS/SPARC/PPC/s390 program execution by the kernel
+MAGIC=$(dirname $(readlink -f "$0"))/binfmts-magic
+
+if [ ! -e "$MAGIC" ] ; then
+ echo "ERROR: file $MAGIC is missing !" 1>&2
+ exit 1
+fi
+
+. "$MAGIC"
+
+QEMU_PATH="$1"
+if [ "$QEMU_PATH" = "" ] ; then
+ QEMU_PATH=/usr/local/bin
+fi
+
# load the binfmt_misc module
if [ ! -d /proc/sys/fs/binfmt_misc ]; then
- /sbin/modprobe binfmt_misc
+ if ! /sbin/modprobe binfmt_misc ; then
+ exit 1
+ fi
fi
if [ ! -f /proc/sys/fs/binfmt_misc/register ]; then
- mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc
+ if ! mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc ; then
+ exit 1
+ fi
+fi
+
+if [ ! -w /proc/sys/fs/binfmt_misc/register ] ; then
+ echo "ERROR: cannot write to /proc/sys/fs/binfmt_misc/register" 1>&2
+ exit 1
fi
# probe cpu type
-cpu=`uname -m`
-case "$cpu" in
- i386|i486|i586|i686|i86pc|BePC|x86_64)
- cpu="i386"
- ;;
- m68k)
- cpu="m68k"
- ;;
- mips*)
- cpu="mips"
- ;;
- "Power Macintosh"|ppc|ppc64)
- cpu="ppc"
- ;;
- armv[4-9]*)
- cpu="arm"
- ;;
-esac
+host_family=$(qemu_get_family)
# register the interpreter for each cpu except for the native one
-if [ $cpu != "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/local/bin/qemu-i386:' > /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/local/bin/qemu-i386:' > /proc/sys/fs/binfmt_misc/register
-fi
-if [ $cpu != "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/local/bin/qemu-alpha:' > /proc/sys/fs/binfmt_misc/register
-fi
-if [ $cpu != "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\xff\xff\xfe\xff\xff\xff:/usr/local/bin/qemu-arm:' > /proc/sys/fs/binfmt_misc/register
- 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/local/bin/qemu-armeb:' > /proc/sys/fs/binfmt_misc/register
-fi
-if [ $cpu != "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/local/bin/qemu-sparc:' > /proc/sys/fs/binfmt_misc/register
-fi
-if [ $cpu != "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/local/bin/qemu-ppc:' > /proc/sys/fs/binfmt_misc/register
-fi
-if [ $cpu != "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\x02\x00\x04:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/local/bin/qemu-m68k:' > /proc/sys/fs/binfmt_misc/register
-fi
-if [ $cpu != "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/local/bin/qemu-mips:' > /proc/sys/fs/binfmt_misc/register
- 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/local/bin/qemu-mipsel:' > /proc/sys/fs/binfmt_misc/register
- 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/local/bin/qemu-mipsn32:' > /proc/sys/fs/binfmt_misc/register
- 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/local/bin/qemu-mipsn32el:' > /proc/sys/fs/binfmt_misc/register
- 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/local/bin/qemu-mips64:' > /proc/sys/fs/binfmt_misc/register
- 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/local/bin/qemu-mips64el:' > /proc/sys/fs/binfmt_misc/register
-fi
-if [ $cpu != "sh" ] ; 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/local/bin/qemu-sh4:' > /proc/sys/fs/binfmt_misc/register
- 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/local/bin/qemu-sh4eb:' > /proc/sys/fs/binfmt_misc/register
-fi
-if [ $cpu != "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/local/bin/qemu-s390x:' > /proc/sys/fs/binfmt_misc/register
-fi
+
+for cpu in ${qemu_target_list} ; do
+ magic=$(eval echo \$${cpu}_magic)
+ mask=$(eval echo \$${cpu}_mask)
+ family=$(eval echo \$${cpu}_family)
+
+ if [ "$magic" = "" -o "$mask" = "" -o "$family" = "" ] ; then
+ echo "INTERNAL ERROR: unknown cpu $cpu" 1>&2
+ continue
+ fi
+
+ qemu="$QEMU_PATH/qemu-$cpu"
+ if [ "$cpu" = "i486" ] ; then
+ qemu="$QEMU_PATH/qemu-i386"
+ fi
+
+ if [ "$host_family" != "$family" ] ; then
+ echo "Setting $qemu as binfmt interpreter for $cpu"
+ echo ":$cpu:M::$magic:$mask:$qemu:" > /proc/sys/fs/binfmt_misc/register
+ fi
+done
--
1.7.10.4
next prev parent reply other threads:[~2013-01-19 23:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-14 21:36 [Qemu-devel] [PATCH] linux-user: Some scripts to create linux container using qemu-linux-user Laurent Vivier
2013-01-14 21:54 ` Andreas Färber
2013-01-19 23:20 ` Laurent Vivier [this message]
2013-01-19 23:20 ` [Qemu-devel] [PATCH 2/3] scripts: define qemu-update-binfmt Laurent Vivier
2013-01-19 23:21 ` [Qemu-devel] [PATCH 3/3] scripts: A script to create linux container using qemu-linux-user Laurent Vivier
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