| Message ID | 1454083651-22101-1-git-send-email-laurent@vivier.eu |
|---|---|
| State | New |
| Headers | show |
Ping? Le 29/01/2016 17:07, Laurent Vivier a écrit : > Original qemu-binfmt-conf.h is only able to write configuration > into /proc/sys/fs/binfmt_misc, and the configuration is lost on reboot. > > This script can configure debian and systemd services to restore > configuration on reboot. Moreover, it is able to manage binfmt > credential and to configure the path of the interpreter. > > List of supported CPU is: > > i386 i486 alpha arm sparc32plus ppc ppc64 ppc64le > m68k mips mipsel mipsn32 mipsn32el mips64 mips64el > sh4 sh4eb s390x aarch64 > > Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU] > [--help][--credential yes|no][--exportdir PATH] > > Configure binfmt_misc to use qemu interpreter > > --help: display this usage > --qemu-path: set path to qemu interpreter (/usr/local/bin) > --debian: don't write into /proc, > instead generate update-binfmts templates > --systemd: don't write into /proc, > instead generate file for systemd-binfmt.service > for the given CPU > --exportdir: define where to write configuration files > (default: /etc/binfmt.d or /usr/share/binfmts) > --credential: if yes, credential an security tokens are > calculated according to the binary to interpret > > To import templates with update-binfmts, use : > > sudo update-binfmts --importdir /usr/share/binfmts --import qemu-CPU > > To remove interpreter, use : > > sudo update-binfmts --package qemu-CPU --remove qemu-CPU /usr/local/bin > > With systemd, binfmt files are loaded by systemd-binfmt.service > > The environment variable HOST_ARCH allows to override 'uname' to generate > configuration files for a different architecture than the current one. > > Signed-off-by: Laurent Vivier <laurent@vivier.eu> > --- > v3: change subject to be shorter > fix typo > remove "!EOF", "echo -n" and "[ ... -o ... ]" > check cpu given by --systemd is in the list > v2: replace some ERRORS by WARNINGS to be able to use the script inside a package build > check only the right to write in the directory, no need to be root > merge systemd and binfmt_misc configuration generation > s/qemu_generate_packages/qemu_generate_debian/ > add support of HOST_ARCH from debian, and update CPU families. > allow to use --exportdir with --systemd and update "Usage". > > scripts/qemu-binfmt-conf.sh | 389 ++++++++++++++++++++++++++++++++++++-------- > 1 file changed, 320 insertions(+), 69 deletions(-) > mode change 100644 => 100755 scripts/qemu-binfmt-conf.sh > > diff --git a/scripts/qemu-binfmt-conf.sh b/scripts/qemu-binfmt-conf.sh > old mode 100644 > new mode 100755 > index 289b1a3..de4d1c1 > --- a/scripts/qemu-binfmt-conf.sh > +++ b/scripts/qemu-binfmt-conf.sh > @@ -1,72 +1,323 @@ > #!/bin/sh > # enable automatic i386/ARM/M68K/MIPS/SPARC/PPC/s390 program execution by the kernel > > -# load the binfmt_misc module > -if [ ! -d /proc/sys/fs/binfmt_misc ]; then > - /sbin/modprobe binfmt_misc > -fi > -if [ ! -f /proc/sys/fs/binfmt_misc/register ]; then > - mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc > -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 > - > -# 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 != "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/local/bin/qemu-aarch64:' > /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 > +qemu_target_list="i386 i486 alpha arm sparc32plus ppc ppc64 ppc64le m68k \ > +mips mipsel mipsn32 mipsn32el mips64 mips64el \ > +sh4 sh4eb s390x aarch64" > + > +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 > + > +sparc32plus_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x12' > +sparc32plus_mask='\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' > +sparc32plus_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\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' > +ppc_family=ppc > + > +ppc64_magic='\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x15' > +ppc64_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' > +ppc64_family=ppc > + > +ppc64le_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x15\x00' > +ppc64le_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\x00' > +ppc64le_family=ppcle > + > +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 > + > +aarch64_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xb7\x00' > +aarch64_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' > +aarch64_family=arm > + > +qemu_get_family() { > + cpu=${HOST_ARCH:-$(uname -m)} > + case "$cpu" in > + amd64|i386|i486|i586|i686|i86pc|BePC|x86_64) > + echo "i386" > + ;; > + mips*) > + echo "mips" > + ;; > + "Power Macintosh"|ppc64|powerpc|ppc) > + echo "ppc" > + ;; > + ppc64el|ppc64le) > + echo "ppcle" > + ;; > + arm|armel|armhf|arm64|armv[4-9]*) > + echo "arm" > + ;; > + sparc*) > + echo "sparc" > + ;; > + *) > + echo "$cpu" > + ;; > + esac > +} > + > +usage() { > + cat <<EOF > +Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU] > + [--help][--credential yes|no][--exportdir PATH] > + > + Configure binfmt_misc to use qemu interpreter > + > + --help: display this usage > + --qemu-path: set path to qemu interpreter ($QEMU_PATH) > + --debian: don't write into /proc, > + instead generate update-binfmts templates > + --systemd: don't write into /proc, > + instead generate file for systemd-binfmt.service > + for the given CPU > + --exportdir: define where to write configuration files > + (default: $SYSTEMDDIR or $DEBIANDIR) > + --credential: if yes, credential and security tokens are > + calculated according to the binary to interpret > + > + To import templates with update-binfmts, use : > + > + sudo update-binfmts --importdir ${EXPORTDIR:-$DEBIANDIR} --import qemu-CPU > + > + To remove interpreter, use : > + > + sudo update-binfmts --package qemu-CPU --remove qemu-CPU $QEMU_PATH > + > + With systemd, binfmt files are loaded by systemd-binfmt.service > + > + The environment variable HOST_ARCH allows to override 'uname' to generate > + configuration files for a different architecture than the current one. > + > + where CPU is one of: > + > + $qemu_target_list > + > +EOF > +} > + > +qemu_check_access() { > + if [ ! -w "$1" ] ; then > + echo "ERROR: cannot write to $1" 1>&2 > + exit 1 > + fi > +} > + > +qemu_check_bintfmt_misc() { > + # load the binfmt_misc module > + if [ ! -d /proc/sys/fs/binfmt_misc ]; then > + if ! /sbin/modprobe binfmt_misc ; then > + exit 1 > + fi > + fi > + if [ ! -f /proc/sys/fs/binfmt_misc/register ]; then > + if ! mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc ; then > + exit 1 > + fi > + fi > + > + qemu_check_access /proc/sys/fs/binfmt_misc/register > +} > + > +installed_dpkg() { > + dpkg --status "$1" > /dev/null 2>&1 > +} > + > +qemu_check_debian() { > + if [ ! -e /etc/debian_version ] ; then > + echo "WARNING: your system is not a Debian based distro" 1>&2 > + elif ! installed_dpkg binfmt-support ; then > + echo "WARNING: package binfmt-support is needed" 1>&2 > + fi > + qemu_check_access "$EXPORTDIR" > +} > + > +qemu_check_systemd() { > + if ! systemctl -q is-enabled systemd-binfmt.service ; then > + echo "WARNING: systemd-binfmt.service is missing or disabled" 1>&2 > + fi > + qemu_check_access "$EXPORTDIR" > +} > + > +qemu_generate_register() { > + echo ":qemu-$cpu:M::$magic:$mask:$qemu:$FLAGS" > +} > + > +qemu_register_interpreter() { > + echo "Setting $qemu as binfmt interpreter for $cpu" > + qemu_generate_register > /proc/sys/fs/binfmt_misc/register > +} > + > +qemu_generate_systemd() { > + echo "Setting $qemu as binfmt interpreter for $cpu for systemd-binfmt.service" > + qemu_generate_register > "$EXPORTDIR/qemu-$cpu.conf" > +} > + > +qemu_generate_debian() { > + cat > "$EXPORTDIR/qemu-$cpu" <<EOF > +package qemu-$cpu > +interpreter $qemu > +magic $magic > +mask $mask > +EOF > + if [ "$FLAGS" = "OC" ] ; then > + echo "credentials yes" >> "$EXPORTDIR/qemu-$cpu" > + fi > +} > + > +qemu_set_binfmts() { > + # probe cpu type > + host_family=$(qemu_get_family) > + > + # register the interpreter for each cpu except for the native one > + > + for cpu in ${qemu_target_list} ; do > + magic=$(eval echo \$${cpu}_magic) > + mask=$(eval echo \$${cpu}_mask) > + family=$(eval echo \$${cpu}_family) > + > + if [ "$magic" = "" ] || [ "$mask" = "" ] || [ "$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 > + $BINFMT_SET > + fi > + done > +} > + > +CHECK=qemu_check_bintfmt_misc > +BINFMT_SET=qemu_register_interpreter > + > +SYSTEMDDIR="/etc/binfmt.d" > +DEBIANDIR="/usr/share/binfmts" > + > +QEMU_PATH=/usr/local/bin > +FLAGS="" > + > +options=$(getopt -o ds:Q:e:hc: -l debian,systemd:,qemu-path:,exportdir:,help,credential: -- "$@") > +eval set -- "$options" > + > +while true ; do > + case "$1" in > + -d|--debian) > + CHECK=qemu_check_debian > + BINFMT_SET=qemu_generate_debian > + EXPORTDIR=${EXPORTDIR:-$DEBIANDIR} > + ;; > + -s|--systemd) > + CHECK=qemu_check_systemd > + BINFMT_SET=qemu_generate_systemd > + EXPORTDIR=${EXPORTDIR:-$SYSTEMDDIR} > + shift > + # check given cpu is in the supported CPU list > + for cpu in ${qemu_target_list} ; do > + if [ "$cpu" == "$1" ] ; then > + break > + fi > + done > + > + if [ "$cpu" == "$1" ] ; then > + qemu_target_list="$1" > + else > + echo "ERROR: unknown CPU \"$1\"" 1>&2 > + usage > + exit 1 > + fi > + ;; > + -Q|--qemu-path) > + shift > + QEMU_PATH="$1" > + ;; > + -e|--exportdir) > + shift > + EXPORTDIR="$1" > + ;; > + -h|--help) > + usage > + exit 1 > + ;; > + -c|--credential) > + shift > + if [ "$1" = "yes" ] ; then > + FLAGS="OC" > + else > + FLAGS="" > + fi > + ;; > + *) > + break > + ;; > + esac > + shift > +done > + > +$CHECK > +qemu_set_binfmts >
Hi, On 16 February 2016 at 00:47, Laurent Vivier <laurent@vivier.eu> wrote: > Ping? It looks good to me. But I'd like to see some ack/review from Alexander or Michael. Riku > Le 29/01/2016 17:07, Laurent Vivier a écrit : >> Original qemu-binfmt-conf.h is only able to write configuration >> into /proc/sys/fs/binfmt_misc, and the configuration is lost on reboot. >> >> This script can configure debian and systemd services to restore >> configuration on reboot. Moreover, it is able to manage binfmt >> credential and to configure the path of the interpreter. >> >> List of supported CPU is: >> >> i386 i486 alpha arm sparc32plus ppc ppc64 ppc64le >> m68k mips mipsel mipsn32 mipsn32el mips64 mips64el >> sh4 sh4eb s390x aarch64 >> >> Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU] >> [--help][--credential yes|no][--exportdir PATH] >> >> Configure binfmt_misc to use qemu interpreter >> >> --help: display this usage >> --qemu-path: set path to qemu interpreter (/usr/local/bin) >> --debian: don't write into /proc, >> instead generate update-binfmts templates >> --systemd: don't write into /proc, >> instead generate file for systemd-binfmt.service >> for the given CPU >> --exportdir: define where to write configuration files >> (default: /etc/binfmt.d or /usr/share/binfmts) >> --credential: if yes, credential an security tokens are >> calculated according to the binary to interpret >> >> To import templates with update-binfmts, use : >> >> sudo update-binfmts --importdir /usr/share/binfmts --import qemu-CPU >> >> To remove interpreter, use : >> >> sudo update-binfmts --package qemu-CPU --remove qemu-CPU /usr/local/bin >> >> With systemd, binfmt files are loaded by systemd-binfmt.service >> >> The environment variable HOST_ARCH allows to override 'uname' to generate >> configuration files for a different architecture than the current one. >> >> Signed-off-by: Laurent Vivier <laurent@vivier.eu> >> --- >> v3: change subject to be shorter >> fix typo >> remove "!EOF", "echo -n" and "[ ... -o ... ]" >> check cpu given by --systemd is in the list >> v2: replace some ERRORS by WARNINGS to be able to use the script inside a package build >> check only the right to write in the directory, no need to be root >> merge systemd and binfmt_misc configuration generation >> s/qemu_generate_packages/qemu_generate_debian/ >> add support of HOST_ARCH from debian, and update CPU families. >> allow to use --exportdir with --systemd and update "Usage". >> >> scripts/qemu-binfmt-conf.sh | 389 ++++++++++++++++++++++++++++++++++++-------- >> 1 file changed, 320 insertions(+), 69 deletions(-) >> mode change 100644 => 100755 scripts/qemu-binfmt-conf.sh >> >> diff --git a/scripts/qemu-binfmt-conf.sh b/scripts/qemu-binfmt-conf.sh >> old mode 100644 >> new mode 100755 >> index 289b1a3..de4d1c1 >> --- a/scripts/qemu-binfmt-conf.sh >> +++ b/scripts/qemu-binfmt-conf.sh >> @@ -1,72 +1,323 @@ >> #!/bin/sh >> # enable automatic i386/ARM/M68K/MIPS/SPARC/PPC/s390 program execution by the kernel >> >> -# load the binfmt_misc module >> -if [ ! -d /proc/sys/fs/binfmt_misc ]; then >> - /sbin/modprobe binfmt_misc >> -fi >> -if [ ! -f /proc/sys/fs/binfmt_misc/register ]; then >> - mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc >> -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 >> - >> -# 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 != "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/local/bin/qemu-aarch64:' > /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 >> +qemu_target_list="i386 i486 alpha arm sparc32plus ppc ppc64 ppc64le m68k \ >> +mips mipsel mipsn32 mipsn32el mips64 mips64el \ >> +sh4 sh4eb s390x aarch64" >> + >> +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 >> + >> +sparc32plus_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x12' >> +sparc32plus_mask='\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' >> +sparc32plus_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\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' >> +ppc_family=ppc >> + >> +ppc64_magic='\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x15' >> +ppc64_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' >> +ppc64_family=ppc >> + >> +ppc64le_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x15\x00' >> +ppc64le_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\x00' >> +ppc64le_family=ppcle >> + >> +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 >> + >> +aarch64_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xb7\x00' >> +aarch64_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' >> +aarch64_family=arm >> + >> +qemu_get_family() { >> + cpu=${HOST_ARCH:-$(uname -m)} >> + case "$cpu" in >> + amd64|i386|i486|i586|i686|i86pc|BePC|x86_64) >> + echo "i386" >> + ;; >> + mips*) >> + echo "mips" >> + ;; >> + "Power Macintosh"|ppc64|powerpc|ppc) >> + echo "ppc" >> + ;; >> + ppc64el|ppc64le) >> + echo "ppcle" >> + ;; >> + arm|armel|armhf|arm64|armv[4-9]*) >> + echo "arm" >> + ;; >> + sparc*) >> + echo "sparc" >> + ;; >> + *) >> + echo "$cpu" >> + ;; >> + esac >> +} >> + >> +usage() { >> + cat <<EOF >> +Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU] >> + [--help][--credential yes|no][--exportdir PATH] >> + >> + Configure binfmt_misc to use qemu interpreter >> + >> + --help: display this usage >> + --qemu-path: set path to qemu interpreter ($QEMU_PATH) >> + --debian: don't write into /proc, >> + instead generate update-binfmts templates >> + --systemd: don't write into /proc, >> + instead generate file for systemd-binfmt.service >> + for the given CPU >> + --exportdir: define where to write configuration files >> + (default: $SYSTEMDDIR or $DEBIANDIR) >> + --credential: if yes, credential and security tokens are >> + calculated according to the binary to interpret >> + >> + To import templates with update-binfmts, use : >> + >> + sudo update-binfmts --importdir ${EXPORTDIR:-$DEBIANDIR} --import qemu-CPU >> + >> + To remove interpreter, use : >> + >> + sudo update-binfmts --package qemu-CPU --remove qemu-CPU $QEMU_PATH >> + >> + With systemd, binfmt files are loaded by systemd-binfmt.service >> + >> + The environment variable HOST_ARCH allows to override 'uname' to generate >> + configuration files for a different architecture than the current one. >> + >> + where CPU is one of: >> + >> + $qemu_target_list >> + >> +EOF >> +} >> + >> +qemu_check_access() { >> + if [ ! -w "$1" ] ; then >> + echo "ERROR: cannot write to $1" 1>&2 >> + exit 1 >> + fi >> +} >> + >> +qemu_check_bintfmt_misc() { >> + # load the binfmt_misc module >> + if [ ! -d /proc/sys/fs/binfmt_misc ]; then >> + if ! /sbin/modprobe binfmt_misc ; then >> + exit 1 >> + fi >> + fi >> + if [ ! -f /proc/sys/fs/binfmt_misc/register ]; then >> + if ! mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc ; then >> + exit 1 >> + fi >> + fi >> + >> + qemu_check_access /proc/sys/fs/binfmt_misc/register >> +} >> + >> +installed_dpkg() { >> + dpkg --status "$1" > /dev/null 2>&1 >> +} >> + >> +qemu_check_debian() { >> + if [ ! -e /etc/debian_version ] ; then >> + echo "WARNING: your system is not a Debian based distro" 1>&2 >> + elif ! installed_dpkg binfmt-support ; then >> + echo "WARNING: package binfmt-support is needed" 1>&2 >> + fi >> + qemu_check_access "$EXPORTDIR" >> +} >> + >> +qemu_check_systemd() { >> + if ! systemctl -q is-enabled systemd-binfmt.service ; then >> + echo "WARNING: systemd-binfmt.service is missing or disabled" 1>&2 >> + fi >> + qemu_check_access "$EXPORTDIR" >> +} >> + >> +qemu_generate_register() { >> + echo ":qemu-$cpu:M::$magic:$mask:$qemu:$FLAGS" >> +} >> + >> +qemu_register_interpreter() { >> + echo "Setting $qemu as binfmt interpreter for $cpu" >> + qemu_generate_register > /proc/sys/fs/binfmt_misc/register >> +} >> + >> +qemu_generate_systemd() { >> + echo "Setting $qemu as binfmt interpreter for $cpu for systemd-binfmt.service" >> + qemu_generate_register > "$EXPORTDIR/qemu-$cpu.conf" >> +} >> + >> +qemu_generate_debian() { >> + cat > "$EXPORTDIR/qemu-$cpu" <<EOF >> +package qemu-$cpu >> +interpreter $qemu >> +magic $magic >> +mask $mask >> +EOF >> + if [ "$FLAGS" = "OC" ] ; then >> + echo "credentials yes" >> "$EXPORTDIR/qemu-$cpu" >> + fi >> +} >> + >> +qemu_set_binfmts() { >> + # probe cpu type >> + host_family=$(qemu_get_family) >> + >> + # register the interpreter for each cpu except for the native one >> + >> + for cpu in ${qemu_target_list} ; do >> + magic=$(eval echo \$${cpu}_magic) >> + mask=$(eval echo \$${cpu}_mask) >> + family=$(eval echo \$${cpu}_family) >> + >> + if [ "$magic" = "" ] || [ "$mask" = "" ] || [ "$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 >> + $BINFMT_SET >> + fi >> + done >> +} >> + >> +CHECK=qemu_check_bintfmt_misc >> +BINFMT_SET=qemu_register_interpreter >> + >> +SYSTEMDDIR="/etc/binfmt.d" >> +DEBIANDIR="/usr/share/binfmts" >> + >> +QEMU_PATH=/usr/local/bin >> +FLAGS="" >> + >> +options=$(getopt -o ds:Q:e:hc: -l debian,systemd:,qemu-path:,exportdir:,help,credential: -- "$@") >> +eval set -- "$options" >> + >> +while true ; do >> + case "$1" in >> + -d|--debian) >> + CHECK=qemu_check_debian >> + BINFMT_SET=qemu_generate_debian >> + EXPORTDIR=${EXPORTDIR:-$DEBIANDIR} >> + ;; >> + -s|--systemd) >> + CHECK=qemu_check_systemd >> + BINFMT_SET=qemu_generate_systemd >> + EXPORTDIR=${EXPORTDIR:-$SYSTEMDDIR} >> + shift >> + # check given cpu is in the supported CPU list >> + for cpu in ${qemu_target_list} ; do >> + if [ "$cpu" == "$1" ] ; then >> + break >> + fi >> + done >> + >> + if [ "$cpu" == "$1" ] ; then >> + qemu_target_list="$1" >> + else >> + echo "ERROR: unknown CPU \"$1\"" 1>&2 >> + usage >> + exit 1 >> + fi >> + ;; >> + -Q|--qemu-path) >> + shift >> + QEMU_PATH="$1" >> + ;; >> + -e|--exportdir) >> + shift >> + EXPORTDIR="$1" >> + ;; >> + -h|--help) >> + usage >> + exit 1 >> + ;; >> + -c|--credential) >> + shift >> + if [ "$1" = "yes" ] ; then >> + FLAGS="OC" >> + else >> + FLAGS="" >> + fi >> + ;; >> + *) >> + break >> + ;; >> + esac >> + shift >> +done >> + >> +$CHECK >> +qemu_set_binfmts >>
Please, Alex, Michael: We need your ack/review. Thanks, Laurent Le 17/02/2016 10:59, Riku Voipio a écrit : > Hi, > > On 16 February 2016 at 00:47, Laurent Vivier <laurent@vivier.eu> wrote: >> Ping? > > It looks good to me. But I'd like to see some ack/review from > Alexander or Michael. > > Riku > >> Le 29/01/2016 17:07, Laurent Vivier a écrit : >>> Original qemu-binfmt-conf.h is only able to write configuration >>> into /proc/sys/fs/binfmt_misc, and the configuration is lost on reboot. >>> >>> This script can configure debian and systemd services to restore >>> configuration on reboot. Moreover, it is able to manage binfmt >>> credential and to configure the path of the interpreter. >>> >>> List of supported CPU is: >>> >>> i386 i486 alpha arm sparc32plus ppc ppc64 ppc64le >>> m68k mips mipsel mipsn32 mipsn32el mips64 mips64el >>> sh4 sh4eb s390x aarch64 >>> >>> Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU] >>> [--help][--credential yes|no][--exportdir PATH] >>> >>> Configure binfmt_misc to use qemu interpreter >>> >>> --help: display this usage >>> --qemu-path: set path to qemu interpreter (/usr/local/bin) >>> --debian: don't write into /proc, >>> instead generate update-binfmts templates >>> --systemd: don't write into /proc, >>> instead generate file for systemd-binfmt.service >>> for the given CPU >>> --exportdir: define where to write configuration files >>> (default: /etc/binfmt.d or /usr/share/binfmts) >>> --credential: if yes, credential an security tokens are >>> calculated according to the binary to interpret >>> >>> To import templates with update-binfmts, use : >>> >>> sudo update-binfmts --importdir /usr/share/binfmts --import qemu-CPU >>> >>> To remove interpreter, use : >>> >>> sudo update-binfmts --package qemu-CPU --remove qemu-CPU /usr/local/bin >>> >>> With systemd, binfmt files are loaded by systemd-binfmt.service >>> >>> The environment variable HOST_ARCH allows to override 'uname' to generate >>> configuration files for a different architecture than the current one. >>> >>> Signed-off-by: Laurent Vivier <laurent@vivier.eu> >>> --- >>> v3: change subject to be shorter >>> fix typo >>> remove "!EOF", "echo -n" and "[ ... -o ... ]" >>> check cpu given by --systemd is in the list >>> v2: replace some ERRORS by WARNINGS to be able to use the script inside a package build >>> check only the right to write in the directory, no need to be root >>> merge systemd and binfmt_misc configuration generation >>> s/qemu_generate_packages/qemu_generate_debian/ >>> add support of HOST_ARCH from debian, and update CPU families. >>> allow to use --exportdir with --systemd and update "Usage". >>> >>> scripts/qemu-binfmt-conf.sh | 389 ++++++++++++++++++++++++++++++++++++-------- >>> 1 file changed, 320 insertions(+), 69 deletions(-) >>> mode change 100644 => 100755 scripts/qemu-binfmt-conf.sh >>> >>> diff --git a/scripts/qemu-binfmt-conf.sh b/scripts/qemu-binfmt-conf.sh >>> old mode 100644 >>> new mode 100755 >>> index 289b1a3..de4d1c1 >>> --- a/scripts/qemu-binfmt-conf.sh >>> +++ b/scripts/qemu-binfmt-conf.sh >>> @@ -1,72 +1,323 @@ >>> #!/bin/sh >>> # enable automatic i386/ARM/M68K/MIPS/SPARC/PPC/s390 program execution by the kernel >>> >>> -# load the binfmt_misc module >>> -if [ ! -d /proc/sys/fs/binfmt_misc ]; then >>> - /sbin/modprobe binfmt_misc >>> -fi >>> -if [ ! -f /proc/sys/fs/binfmt_misc/register ]; then >>> - mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc >>> -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 >>> - >>> -# 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 != "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/local/bin/qemu-aarch64:' > /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 >>> +qemu_target_list="i386 i486 alpha arm sparc32plus ppc ppc64 ppc64le m68k \ >>> +mips mipsel mipsn32 mipsn32el mips64 mips64el \ >>> +sh4 sh4eb s390x aarch64" >>> + >>> +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 >>> + >>> +sparc32plus_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x12' >>> +sparc32plus_mask='\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' >>> +sparc32plus_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\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' >>> +ppc_family=ppc >>> + >>> +ppc64_magic='\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x15' >>> +ppc64_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' >>> +ppc64_family=ppc >>> + >>> +ppc64le_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x15\x00' >>> +ppc64le_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\x00' >>> +ppc64le_family=ppcle >>> + >>> +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 >>> + >>> +aarch64_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xb7\x00' >>> +aarch64_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' >>> +aarch64_family=arm >>> + >>> +qemu_get_family() { >>> + cpu=${HOST_ARCH:-$(uname -m)} >>> + case "$cpu" in >>> + amd64|i386|i486|i586|i686|i86pc|BePC|x86_64) >>> + echo "i386" >>> + ;; >>> + mips*) >>> + echo "mips" >>> + ;; >>> + "Power Macintosh"|ppc64|powerpc|ppc) >>> + echo "ppc" >>> + ;; >>> + ppc64el|ppc64le) >>> + echo "ppcle" >>> + ;; >>> + arm|armel|armhf|arm64|armv[4-9]*) >>> + echo "arm" >>> + ;; >>> + sparc*) >>> + echo "sparc" >>> + ;; >>> + *) >>> + echo "$cpu" >>> + ;; >>> + esac >>> +} >>> + >>> +usage() { >>> + cat <<EOF >>> +Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU] >>> + [--help][--credential yes|no][--exportdir PATH] >>> + >>> + Configure binfmt_misc to use qemu interpreter >>> + >>> + --help: display this usage >>> + --qemu-path: set path to qemu interpreter ($QEMU_PATH) >>> + --debian: don't write into /proc, >>> + instead generate update-binfmts templates >>> + --systemd: don't write into /proc, >>> + instead generate file for systemd-binfmt.service >>> + for the given CPU >>> + --exportdir: define where to write configuration files >>> + (default: $SYSTEMDDIR or $DEBIANDIR) >>> + --credential: if yes, credential and security tokens are >>> + calculated according to the binary to interpret >>> + >>> + To import templates with update-binfmts, use : >>> + >>> + sudo update-binfmts --importdir ${EXPORTDIR:-$DEBIANDIR} --import qemu-CPU >>> + >>> + To remove interpreter, use : >>> + >>> + sudo update-binfmts --package qemu-CPU --remove qemu-CPU $QEMU_PATH >>> + >>> + With systemd, binfmt files are loaded by systemd-binfmt.service >>> + >>> + The environment variable HOST_ARCH allows to override 'uname' to generate >>> + configuration files for a different architecture than the current one. >>> + >>> + where CPU is one of: >>> + >>> + $qemu_target_list >>> + >>> +EOF >>> +} >>> + >>> +qemu_check_access() { >>> + if [ ! -w "$1" ] ; then >>> + echo "ERROR: cannot write to $1" 1>&2 >>> + exit 1 >>> + fi >>> +} >>> + >>> +qemu_check_bintfmt_misc() { >>> + # load the binfmt_misc module >>> + if [ ! -d /proc/sys/fs/binfmt_misc ]; then >>> + if ! /sbin/modprobe binfmt_misc ; then >>> + exit 1 >>> + fi >>> + fi >>> + if [ ! -f /proc/sys/fs/binfmt_misc/register ]; then >>> + if ! mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc ; then >>> + exit 1 >>> + fi >>> + fi >>> + >>> + qemu_check_access /proc/sys/fs/binfmt_misc/register >>> +} >>> + >>> +installed_dpkg() { >>> + dpkg --status "$1" > /dev/null 2>&1 >>> +} >>> + >>> +qemu_check_debian() { >>> + if [ ! -e /etc/debian_version ] ; then >>> + echo "WARNING: your system is not a Debian based distro" 1>&2 >>> + elif ! installed_dpkg binfmt-support ; then >>> + echo "WARNING: package binfmt-support is needed" 1>&2 >>> + fi >>> + qemu_check_access "$EXPORTDIR" >>> +} >>> + >>> +qemu_check_systemd() { >>> + if ! systemctl -q is-enabled systemd-binfmt.service ; then >>> + echo "WARNING: systemd-binfmt.service is missing or disabled" 1>&2 >>> + fi >>> + qemu_check_access "$EXPORTDIR" >>> +} >>> + >>> +qemu_generate_register() { >>> + echo ":qemu-$cpu:M::$magic:$mask:$qemu:$FLAGS" >>> +} >>> + >>> +qemu_register_interpreter() { >>> + echo "Setting $qemu as binfmt interpreter for $cpu" >>> + qemu_generate_register > /proc/sys/fs/binfmt_misc/register >>> +} >>> + >>> +qemu_generate_systemd() { >>> + echo "Setting $qemu as binfmt interpreter for $cpu for systemd-binfmt.service" >>> + qemu_generate_register > "$EXPORTDIR/qemu-$cpu.conf" >>> +} >>> + >>> +qemu_generate_debian() { >>> + cat > "$EXPORTDIR/qemu-$cpu" <<EOF >>> +package qemu-$cpu >>> +interpreter $qemu >>> +magic $magic >>> +mask $mask >>> +EOF >>> + if [ "$FLAGS" = "OC" ] ; then >>> + echo "credentials yes" >> "$EXPORTDIR/qemu-$cpu" >>> + fi >>> +} >>> + >>> +qemu_set_binfmts() { >>> + # probe cpu type >>> + host_family=$(qemu_get_family) >>> + >>> + # register the interpreter for each cpu except for the native one >>> + >>> + for cpu in ${qemu_target_list} ; do >>> + magic=$(eval echo \$${cpu}_magic) >>> + mask=$(eval echo \$${cpu}_mask) >>> + family=$(eval echo \$${cpu}_family) >>> + >>> + if [ "$magic" = "" ] || [ "$mask" = "" ] || [ "$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 >>> + $BINFMT_SET >>> + fi >>> + done >>> +} >>> + >>> +CHECK=qemu_check_bintfmt_misc >>> +BINFMT_SET=qemu_register_interpreter >>> + >>> +SYSTEMDDIR="/etc/binfmt.d" >>> +DEBIANDIR="/usr/share/binfmts" >>> + >>> +QEMU_PATH=/usr/local/bin >>> +FLAGS="" >>> + >>> +options=$(getopt -o ds:Q:e:hc: -l debian,systemd:,qemu-path:,exportdir:,help,credential: -- "$@") >>> +eval set -- "$options" >>> + >>> +while true ; do >>> + case "$1" in >>> + -d|--debian) >>> + CHECK=qemu_check_debian >>> + BINFMT_SET=qemu_generate_debian >>> + EXPORTDIR=${EXPORTDIR:-$DEBIANDIR} >>> + ;; >>> + -s|--systemd) >>> + CHECK=qemu_check_systemd >>> + BINFMT_SET=qemu_generate_systemd >>> + EXPORTDIR=${EXPORTDIR:-$SYSTEMDDIR} >>> + shift >>> + # check given cpu is in the supported CPU list >>> + for cpu in ${qemu_target_list} ; do >>> + if [ "$cpu" == "$1" ] ; then >>> + break >>> + fi >>> + done >>> + >>> + if [ "$cpu" == "$1" ] ; then >>> + qemu_target_list="$1" >>> + else >>> + echo "ERROR: unknown CPU \"$1\"" 1>&2 >>> + usage >>> + exit 1 >>> + fi >>> + ;; >>> + -Q|--qemu-path) >>> + shift >>> + QEMU_PATH="$1" >>> + ;; >>> + -e|--exportdir) >>> + shift >>> + EXPORTDIR="$1" >>> + ;; >>> + -h|--help) >>> + usage >>> + exit 1 >>> + ;; >>> + -c|--credential) >>> + shift >>> + if [ "$1" = "yes" ] ; then >>> + FLAGS="OC" >>> + else >>> + FLAGS="" >>> + fi >>> + ;; >>> + *) >>> + break >>> + ;; >>> + esac >>> + shift >>> +done >>> + >>> +$CHECK >>> +qemu_set_binfmts >>> >
Le 25/02/2016 à 17:28, Laurent Vivier a écrit : > Please, Alex, Michael: > > We need your ack/review. Someone? :) Thanks, Laurent > Thanks, > Laurent > > Le 17/02/2016 10:59, Riku Voipio a écrit : >> Hi, >> >> On 16 February 2016 at 00:47, Laurent Vivier <laurent@vivier.eu> wrote: >>> Ping? >> >> It looks good to me. But I'd like to see some ack/review from >> Alexander or Michael. >> >> Riku >> >>> Le 29/01/2016 17:07, Laurent Vivier a écrit : >>>> Original qemu-binfmt-conf.h is only able to write configuration >>>> into /proc/sys/fs/binfmt_misc, and the configuration is lost on reboot. >>>> >>>> This script can configure debian and systemd services to restore >>>> configuration on reboot. Moreover, it is able to manage binfmt >>>> credential and to configure the path of the interpreter. >>>> >>>> List of supported CPU is: >>>> >>>> i386 i486 alpha arm sparc32plus ppc ppc64 ppc64le >>>> m68k mips mipsel mipsn32 mipsn32el mips64 mips64el >>>> sh4 sh4eb s390x aarch64 >>>> >>>> Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU] >>>> [--help][--credential yes|no][--exportdir PATH] >>>> >>>> Configure binfmt_misc to use qemu interpreter >>>> >>>> --help: display this usage >>>> --qemu-path: set path to qemu interpreter (/usr/local/bin) >>>> --debian: don't write into /proc, >>>> instead generate update-binfmts templates >>>> --systemd: don't write into /proc, >>>> instead generate file for systemd-binfmt.service >>>> for the given CPU >>>> --exportdir: define where to write configuration files >>>> (default: /etc/binfmt.d or /usr/share/binfmts) >>>> --credential: if yes, credential an security tokens are >>>> calculated according to the binary to interpret >>>> >>>> To import templates with update-binfmts, use : >>>> >>>> sudo update-binfmts --importdir /usr/share/binfmts --import qemu-CPU >>>> >>>> To remove interpreter, use : >>>> >>>> sudo update-binfmts --package qemu-CPU --remove qemu-CPU /usr/local/bin >>>> >>>> With systemd, binfmt files are loaded by systemd-binfmt.service >>>> >>>> The environment variable HOST_ARCH allows to override 'uname' to generate >>>> configuration files for a different architecture than the current one. >>>> >>>> Signed-off-by: Laurent Vivier <laurent@vivier.eu> >>>> --- >>>> v3: change subject to be shorter >>>> fix typo >>>> remove "!EOF", "echo -n" and "[ ... -o ... ]" >>>> check cpu given by --systemd is in the list >>>> v2: replace some ERRORS by WARNINGS to be able to use the script inside a package build >>>> check only the right to write in the directory, no need to be root >>>> merge systemd and binfmt_misc configuration generation >>>> s/qemu_generate_packages/qemu_generate_debian/ >>>> add support of HOST_ARCH from debian, and update CPU families. >>>> allow to use --exportdir with --systemd and update "Usage". >>>> >>>> scripts/qemu-binfmt-conf.sh | 389 ++++++++++++++++++++++++++++++++++++-------- >>>> 1 file changed, 320 insertions(+), 69 deletions(-) >>>> mode change 100644 => 100755 scripts/qemu-binfmt-conf.sh >>>> >>>> diff --git a/scripts/qemu-binfmt-conf.sh b/scripts/qemu-binfmt-conf.sh >>>> old mode 100644 >>>> new mode 100755 >>>> index 289b1a3..de4d1c1 >>>> --- a/scripts/qemu-binfmt-conf.sh >>>> +++ b/scripts/qemu-binfmt-conf.sh >>>> @@ -1,72 +1,323 @@ >>>> #!/bin/sh >>>> # enable automatic i386/ARM/M68K/MIPS/SPARC/PPC/s390 program execution by the kernel >>>> >>>> -# load the binfmt_misc module >>>> -if [ ! -d /proc/sys/fs/binfmt_misc ]; then >>>> - /sbin/modprobe binfmt_misc >>>> -fi >>>> -if [ ! -f /proc/sys/fs/binfmt_misc/register ]; then >>>> - mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc >>>> -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 >>>> - >>>> -# 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 != "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/local/bin/qemu-aarch64:' > /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 >>>> +qemu_target_list="i386 i486 alpha arm sparc32plus ppc ppc64 ppc64le m68k \ >>>> +mips mipsel mipsn32 mipsn32el mips64 mips64el \ >>>> +sh4 sh4eb s390x aarch64" >>>> + >>>> +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 >>>> + >>>> +sparc32plus_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x12' >>>> +sparc32plus_mask='\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' >>>> +sparc32plus_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\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' >>>> +ppc_family=ppc >>>> + >>>> +ppc64_magic='\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x15' >>>> +ppc64_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' >>>> +ppc64_family=ppc >>>> + >>>> +ppc64le_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x15\x00' >>>> +ppc64le_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\x00' >>>> +ppc64le_family=ppcle >>>> + >>>> +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 >>>> + >>>> +aarch64_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xb7\x00' >>>> +aarch64_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' >>>> +aarch64_family=arm >>>> + >>>> +qemu_get_family() { >>>> + cpu=${HOST_ARCH:-$(uname -m)} >>>> + case "$cpu" in >>>> + amd64|i386|i486|i586|i686|i86pc|BePC|x86_64) >>>> + echo "i386" >>>> + ;; >>>> + mips*) >>>> + echo "mips" >>>> + ;; >>>> + "Power Macintosh"|ppc64|powerpc|ppc) >>>> + echo "ppc" >>>> + ;; >>>> + ppc64el|ppc64le) >>>> + echo "ppcle" >>>> + ;; >>>> + arm|armel|armhf|arm64|armv[4-9]*) >>>> + echo "arm" >>>> + ;; >>>> + sparc*) >>>> + echo "sparc" >>>> + ;; >>>> + *) >>>> + echo "$cpu" >>>> + ;; >>>> + esac >>>> +} >>>> + >>>> +usage() { >>>> + cat <<EOF >>>> +Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU] >>>> + [--help][--credential yes|no][--exportdir PATH] >>>> + >>>> + Configure binfmt_misc to use qemu interpreter >>>> + >>>> + --help: display this usage >>>> + --qemu-path: set path to qemu interpreter ($QEMU_PATH) >>>> + --debian: don't write into /proc, >>>> + instead generate update-binfmts templates >>>> + --systemd: don't write into /proc, >>>> + instead generate file for systemd-binfmt.service >>>> + for the given CPU >>>> + --exportdir: define where to write configuration files >>>> + (default: $SYSTEMDDIR or $DEBIANDIR) >>>> + --credential: if yes, credential and security tokens are >>>> + calculated according to the binary to interpret >>>> + >>>> + To import templates with update-binfmts, use : >>>> + >>>> + sudo update-binfmts --importdir ${EXPORTDIR:-$DEBIANDIR} --import qemu-CPU >>>> + >>>> + To remove interpreter, use : >>>> + >>>> + sudo update-binfmts --package qemu-CPU --remove qemu-CPU $QEMU_PATH >>>> + >>>> + With systemd, binfmt files are loaded by systemd-binfmt.service >>>> + >>>> + The environment variable HOST_ARCH allows to override 'uname' to generate >>>> + configuration files for a different architecture than the current one. >>>> + >>>> + where CPU is one of: >>>> + >>>> + $qemu_target_list >>>> + >>>> +EOF >>>> +} >>>> + >>>> +qemu_check_access() { >>>> + if [ ! -w "$1" ] ; then >>>> + echo "ERROR: cannot write to $1" 1>&2 >>>> + exit 1 >>>> + fi >>>> +} >>>> + >>>> +qemu_check_bintfmt_misc() { >>>> + # load the binfmt_misc module >>>> + if [ ! -d /proc/sys/fs/binfmt_misc ]; then >>>> + if ! /sbin/modprobe binfmt_misc ; then >>>> + exit 1 >>>> + fi >>>> + fi >>>> + if [ ! -f /proc/sys/fs/binfmt_misc/register ]; then >>>> + if ! mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc ; then >>>> + exit 1 >>>> + fi >>>> + fi >>>> + >>>> + qemu_check_access /proc/sys/fs/binfmt_misc/register >>>> +} >>>> + >>>> +installed_dpkg() { >>>> + dpkg --status "$1" > /dev/null 2>&1 >>>> +} >>>> + >>>> +qemu_check_debian() { >>>> + if [ ! -e /etc/debian_version ] ; then >>>> + echo "WARNING: your system is not a Debian based distro" 1>&2 >>>> + elif ! installed_dpkg binfmt-support ; then >>>> + echo "WARNING: package binfmt-support is needed" 1>&2 >>>> + fi >>>> + qemu_check_access "$EXPORTDIR" >>>> +} >>>> + >>>> +qemu_check_systemd() { >>>> + if ! systemctl -q is-enabled systemd-binfmt.service ; then >>>> + echo "WARNING: systemd-binfmt.service is missing or disabled" 1>&2 >>>> + fi >>>> + qemu_check_access "$EXPORTDIR" >>>> +} >>>> + >>>> +qemu_generate_register() { >>>> + echo ":qemu-$cpu:M::$magic:$mask:$qemu:$FLAGS" >>>> +} >>>> + >>>> +qemu_register_interpreter() { >>>> + echo "Setting $qemu as binfmt interpreter for $cpu" >>>> + qemu_generate_register > /proc/sys/fs/binfmt_misc/register >>>> +} >>>> + >>>> +qemu_generate_systemd() { >>>> + echo "Setting $qemu as binfmt interpreter for $cpu for systemd-binfmt.service" >>>> + qemu_generate_register > "$EXPORTDIR/qemu-$cpu.conf" >>>> +} >>>> + >>>> +qemu_generate_debian() { >>>> + cat > "$EXPORTDIR/qemu-$cpu" <<EOF >>>> +package qemu-$cpu >>>> +interpreter $qemu >>>> +magic $magic >>>> +mask $mask >>>> +EOF >>>> + if [ "$FLAGS" = "OC" ] ; then >>>> + echo "credentials yes" >> "$EXPORTDIR/qemu-$cpu" >>>> + fi >>>> +} >>>> + >>>> +qemu_set_binfmts() { >>>> + # probe cpu type >>>> + host_family=$(qemu_get_family) >>>> + >>>> + # register the interpreter for each cpu except for the native one >>>> + >>>> + for cpu in ${qemu_target_list} ; do >>>> + magic=$(eval echo \$${cpu}_magic) >>>> + mask=$(eval echo \$${cpu}_mask) >>>> + family=$(eval echo \$${cpu}_family) >>>> + >>>> + if [ "$magic" = "" ] || [ "$mask" = "" ] || [ "$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 >>>> + $BINFMT_SET >>>> + fi >>>> + done >>>> +} >>>> + >>>> +CHECK=qemu_check_bintfmt_misc >>>> +BINFMT_SET=qemu_register_interpreter >>>> + >>>> +SYSTEMDDIR="/etc/binfmt.d" >>>> +DEBIANDIR="/usr/share/binfmts" >>>> + >>>> +QEMU_PATH=/usr/local/bin >>>> +FLAGS="" >>>> + >>>> +options=$(getopt -o ds:Q:e:hc: -l debian,systemd:,qemu-path:,exportdir:,help,credential: -- "$@") >>>> +eval set -- "$options" >>>> + >>>> +while true ; do >>>> + case "$1" in >>>> + -d|--debian) >>>> + CHECK=qemu_check_debian >>>> + BINFMT_SET=qemu_generate_debian >>>> + EXPORTDIR=${EXPORTDIR:-$DEBIANDIR} >>>> + ;; >>>> + -s|--systemd) >>>> + CHECK=qemu_check_systemd >>>> + BINFMT_SET=qemu_generate_systemd >>>> + EXPORTDIR=${EXPORTDIR:-$SYSTEMDDIR} >>>> + shift >>>> + # check given cpu is in the supported CPU list >>>> + for cpu in ${qemu_target_list} ; do >>>> + if [ "$cpu" == "$1" ] ; then >>>> + break >>>> + fi >>>> + done >>>> + >>>> + if [ "$cpu" == "$1" ] ; then >>>> + qemu_target_list="$1" >>>> + else >>>> + echo "ERROR: unknown CPU \"$1\"" 1>&2 >>>> + usage >>>> + exit 1 >>>> + fi >>>> + ;; >>>> + -Q|--qemu-path) >>>> + shift >>>> + QEMU_PATH="$1" >>>> + ;; >>>> + -e|--exportdir) >>>> + shift >>>> + EXPORTDIR="$1" >>>> + ;; >>>> + -h|--help) >>>> + usage >>>> + exit 1 >>>> + ;; >>>> + -c|--credential) >>>> + shift >>>> + if [ "$1" = "yes" ] ; then >>>> + FLAGS="OC" >>>> + else >>>> + FLAGS="" >>>> + fi >>>> + ;; >>>> + *) >>>> + break >>>> + ;; >>>> + esac >>>> + shift >>>> +done >>>> + >>>> +$CHECK >>>> +qemu_set_binfmts >>>> >> >
On 05/25/2016 05:51 PM, Laurent Vivier wrote: > > Le 25/02/2016 à 17:28, Laurent Vivier a écrit : >> Please, Alex, Michael: >> >> We need your ack/review. > Someone? :) It's definitely an improvement over today's situation. Reviewed-by: Alexander Graf <agraf@suse.de> Alex
On 27 May 2016 at 16:56, Alexander Graf <agraf@suse.de> wrote: > On 05/25/2016 05:51 PM, Laurent Vivier wrote: >> >> >> Le 25/02/2016 à 17:28, Laurent Vivier a écrit : >>> >>> Please, Alex, Michael: >>> >>> We need your ack/review. >> >> Someone? :) > It's definitely an improvement over today's situation. > Reviewed-by: Alexander Graf <agraf@suse.de> Applied to linux-user que, thanks Riku
Le 31/05/2016 à 07:46, Riku Voipio a écrit : > On 27 May 2016 at 16:56, Alexander Graf <agraf@suse.de> wrote: >> On 05/25/2016 05:51 PM, Laurent Vivier wrote: >>> >>> >>> Le 25/02/2016 à 17:28, Laurent Vivier a écrit : >>>> >>>> Please, Alex, Michael: >>>> >>>> We need your ack/review. >>> >>> Someone? :) > >> It's definitely an improvement over today's situation. > >> Reviewed-by: Alexander Graf <agraf@suse.de> > > Applied to linux-user que, thanks Thanks, [Could you update the commit message to change "qemu-binfmt-conf.h" by "qemu-binfmt-conf.sh"?] Laurent
diff --git a/scripts/qemu-binfmt-conf.sh b/scripts/qemu-binfmt-conf.sh old mode 100644 new mode 100755 index 289b1a3..de4d1c1 --- a/scripts/qemu-binfmt-conf.sh +++ b/scripts/qemu-binfmt-conf.sh @@ -1,72 +1,323 @@ #!/bin/sh # enable automatic i386/ARM/M68K/MIPS/SPARC/PPC/s390 program execution by the kernel -# load the binfmt_misc module -if [ ! -d /proc/sys/fs/binfmt_misc ]; then - /sbin/modprobe binfmt_misc -fi -if [ ! -f /proc/sys/fs/binfmt_misc/register ]; then - mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc -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 - -# 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 != "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/local/bin/qemu-aarch64:' > /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 +qemu_target_list="i386 i486 alpha arm sparc32plus ppc ppc64 ppc64le m68k \ +mips mipsel mipsn32 mipsn32el mips64 mips64el \ +sh4 sh4eb s390x aarch64" + +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 + +sparc32plus_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x12' +sparc32plus_mask='\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' +sparc32plus_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\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' +ppc_family=ppc + +ppc64_magic='\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x15' +ppc64_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' +ppc64_family=ppc + +ppc64le_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x15\x00' +ppc64le_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\x00' +ppc64le_family=ppcle + +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 + +aarch64_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xb7\x00' +aarch64_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' +aarch64_family=arm + +qemu_get_family() { + cpu=${HOST_ARCH:-$(uname -m)} + case "$cpu" in + amd64|i386|i486|i586|i686|i86pc|BePC|x86_64) + echo "i386" + ;; + mips*) + echo "mips" + ;; + "Power Macintosh"|ppc64|powerpc|ppc) + echo "ppc" + ;; + ppc64el|ppc64le) + echo "ppcle" + ;; + arm|armel|armhf|arm64|armv[4-9]*) + echo "arm" + ;; + sparc*) + echo "sparc" + ;; + *) + echo "$cpu" + ;; + esac +} + +usage() { + cat <<EOF +Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU] + [--help][--credential yes|no][--exportdir PATH] + + Configure binfmt_misc to use qemu interpreter + + --help: display this usage + --qemu-path: set path to qemu interpreter ($QEMU_PATH) + --debian: don't write into /proc, + instead generate update-binfmts templates + --systemd: don't write into /proc, + instead generate file for systemd-binfmt.service + for the given CPU + --exportdir: define where to write configuration files + (default: $SYSTEMDDIR or $DEBIANDIR) + --credential: if yes, credential and security tokens are + calculated according to the binary to interpret + + To import templates with update-binfmts, use : + + sudo update-binfmts --importdir ${EXPORTDIR:-$DEBIANDIR} --import qemu-CPU + + To remove interpreter, use : + + sudo update-binfmts --package qemu-CPU --remove qemu-CPU $QEMU_PATH + + With systemd, binfmt files are loaded by systemd-binfmt.service + + The environment variable HOST_ARCH allows to override 'uname' to generate + configuration files for a different architecture than the current one. + + where CPU is one of: + + $qemu_target_list + +EOF +} + +qemu_check_access() { + if [ ! -w "$1" ] ; then + echo "ERROR: cannot write to $1" 1>&2 + exit 1 + fi +} + +qemu_check_bintfmt_misc() { + # load the binfmt_misc module + if [ ! -d /proc/sys/fs/binfmt_misc ]; then + if ! /sbin/modprobe binfmt_misc ; then + exit 1 + fi + fi + if [ ! -f /proc/sys/fs/binfmt_misc/register ]; then + if ! mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc ; then + exit 1 + fi + fi + + qemu_check_access /proc/sys/fs/binfmt_misc/register +} + +installed_dpkg() { + dpkg --status "$1" > /dev/null 2>&1 +} + +qemu_check_debian() { + if [ ! -e /etc/debian_version ] ; then + echo "WARNING: your system is not a Debian based distro" 1>&2 + elif ! installed_dpkg binfmt-support ; then + echo "WARNING: package binfmt-support is needed" 1>&2 + fi + qemu_check_access "$EXPORTDIR" +} + +qemu_check_systemd() { + if ! systemctl -q is-enabled systemd-binfmt.service ; then + echo "WARNING: systemd-binfmt.service is missing or disabled" 1>&2 + fi + qemu_check_access "$EXPORTDIR" +} + +qemu_generate_register() { + echo ":qemu-$cpu:M::$magic:$mask:$qemu:$FLAGS" +} + +qemu_register_interpreter() { + echo "Setting $qemu as binfmt interpreter for $cpu" + qemu_generate_register > /proc/sys/fs/binfmt_misc/register +} + +qemu_generate_systemd() { + echo "Setting $qemu as binfmt interpreter for $cpu for systemd-binfmt.service" + qemu_generate_register > "$EXPORTDIR/qemu-$cpu.conf" +} + +qemu_generate_debian() { + cat > "$EXPORTDIR/qemu-$cpu" <<EOF +package qemu-$cpu +interpreter $qemu +magic $magic +mask $mask +EOF + if [ "$FLAGS" = "OC" ] ; then + echo "credentials yes" >> "$EXPORTDIR/qemu-$cpu" + fi +} + +qemu_set_binfmts() { + # probe cpu type + host_family=$(qemu_get_family) + + # register the interpreter for each cpu except for the native one + + for cpu in ${qemu_target_list} ; do + magic=$(eval echo \$${cpu}_magic) + mask=$(eval echo \$${cpu}_mask) + family=$(eval echo \$${cpu}_family) + + if [ "$magic" = "" ] || [ "$mask" = "" ] || [ "$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 + $BINFMT_SET + fi + done +} + +CHECK=qemu_check_bintfmt_misc +BINFMT_SET=qemu_register_interpreter + +SYSTEMDDIR="/etc/binfmt.d" +DEBIANDIR="/usr/share/binfmts" + +QEMU_PATH=/usr/local/bin +FLAGS="" + +options=$(getopt -o ds:Q:e:hc: -l debian,systemd:,qemu-path:,exportdir:,help,credential: -- "$@") +eval set -- "$options" + +while true ; do + case "$1" in + -d|--debian) + CHECK=qemu_check_debian + BINFMT_SET=qemu_generate_debian + EXPORTDIR=${EXPORTDIR:-$DEBIANDIR} + ;; + -s|--systemd) + CHECK=qemu_check_systemd + BINFMT_SET=qemu_generate_systemd + EXPORTDIR=${EXPORTDIR:-$SYSTEMDDIR} + shift + # check given cpu is in the supported CPU list + for cpu in ${qemu_target_list} ; do + if [ "$cpu" == "$1" ] ; then + break + fi + done + + if [ "$cpu" == "$1" ] ; then + qemu_target_list="$1" + else + echo "ERROR: unknown CPU \"$1\"" 1>&2 + usage + exit 1 + fi + ;; + -Q|--qemu-path) + shift + QEMU_PATH="$1" + ;; + -e|--exportdir) + shift + EXPORTDIR="$1" + ;; + -h|--help) + usage + exit 1 + ;; + -c|--credential) + shift + if [ "$1" = "yes" ] ; then + FLAGS="OC" + else + FLAGS="" + fi + ;; + *) + break + ;; + esac + shift +done + +$CHECK +qemu_set_binfmts
Original qemu-binfmt-conf.h is only able to write configuration into /proc/sys/fs/binfmt_misc, and the configuration is lost on reboot. This script can configure debian and systemd services to restore configuration on reboot. Moreover, it is able to manage binfmt credential and to configure the path of the interpreter. List of supported CPU is: i386 i486 alpha arm sparc32plus ppc ppc64 ppc64le m68k mips mipsel mipsn32 mipsn32el mips64 mips64el sh4 sh4eb s390x aarch64 Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU] [--help][--credential yes|no][--exportdir PATH] Configure binfmt_misc to use qemu interpreter --help: display this usage --qemu-path: set path to qemu interpreter (/usr/local/bin) --debian: don't write into /proc, instead generate update-binfmts templates --systemd: don't write into /proc, instead generate file for systemd-binfmt.service for the given CPU --exportdir: define where to write configuration files (default: /etc/binfmt.d or /usr/share/binfmts) --credential: if yes, credential an security tokens are calculated according to the binary to interpret To import templates with update-binfmts, use : sudo update-binfmts --importdir /usr/share/binfmts --import qemu-CPU To remove interpreter, use : sudo update-binfmts --package qemu-CPU --remove qemu-CPU /usr/local/bin With systemd, binfmt files are loaded by systemd-binfmt.service The environment variable HOST_ARCH allows to override 'uname' to generate configuration files for a different architecture than the current one. Signed-off-by: Laurent Vivier <laurent@vivier.eu> --- v3: change subject to be shorter fix typo remove "!EOF", "echo -n" and "[ ... -o ... ]" check cpu given by --systemd is in the list v2: replace some ERRORS by WARNINGS to be able to use the script inside a package build check only the right to write in the directory, no need to be root merge systemd and binfmt_misc configuration generation s/qemu_generate_packages/qemu_generate_debian/ add support of HOST_ARCH from debian, and update CPU families. allow to use --exportdir with --systemd and update "Usage". scripts/qemu-binfmt-conf.sh | 389 ++++++++++++++++++++++++++++++++++++-------- 1 file changed, 320 insertions(+), 69 deletions(-) mode change 100644 => 100755 scripts/qemu-binfmt-conf.sh