#!/bin/sh # Enable automatic program execution by the kernel. qemu_target_list="i386 i486 alpha arm armeb sparc sparc32plus sparc64 \ ppc ppc64 ppc64le m68k mips mipsel mipsn32 mipsn32el mips64 mips64el \ sh4 sh4eb s390x aarch64 aarch64_be hppa riscv32 riscv64 xtensa xtensaeb \ microblaze microblazeel or1k x86_64 hexagon" 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\x00\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\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' i486_family=i386 x86_64_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x3e\x00' x86_64_mask='\xff\xff\xff\xff\xff\xfe\xfe\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' x86_64_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\x00\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=armeb 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\x00\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\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' sparc32plus_family=sparc sparc64_magic='\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x2b' sparc64_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' sparc64_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\x00\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\x00\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\x00\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\x00\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 aarch64_be_magic='\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xb7' aarch64_be_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' aarch64_be_family=armeb hppa_magic='\x7f\x45\x4c\x46\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x0f' hppa_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' hppa_family=hppa riscv32_magic='\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xf3\x00' riscv32_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' riscv32_family=riscv riscv64_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xf3\x00' riscv64_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' riscv64_family=riscv xtensa_magic='\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x5e\x00' xtensa_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' xtensa_family=xtensa xtensaeb_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x5e' xtensaeb_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' xtensaeb_family=xtensaeb microblaze_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xba\xab' microblaze_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' microblaze_family=microblaze microblazeel_magic='\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xab\xba' microblazeel_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' microblazeel_family=microblazeel or1k_magic='\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x5c' or1k_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff' or1k_family=or1k hexagon_magic='\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xa4\x00' hexagon_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' hexagon_family=hexagon qemu_get_family() { cpu=${HOST_ARCH:-$(uname -m)} case "$cpu" in amd64|i386|i486|i586|i686|i86pc|BePC|x86_64) echo "i386" ;; mips*) echo "mips" ;; "Power Macintosh"|ppc64|powerpc|ppc) echo "ppc" ;; ppc64el|ppc64le) echo "ppcle" ;; arm|armel|armhf|arm64|armv[4-9]*l|aarch64) echo "arm" ;; armeb|armv[4-9]*b|aarch64_be) echo "armeb" ;; sparc*) echo "sparc" ;; riscv*) echo "riscv" ;; *) echo "$cpu" ;; esac } usage() { cat <<EOF Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU] [--help][--credential yes|no][--exportdir PATH] [--persistent yes|no][--qemu-suffix SUFFIX] [--preserve-argv0 yes|no] Configure binfmt_misc to use qemu interpreter --help: display this usage --qemu-path: set path to qemu interpreter ($QEMU_PATH) --qemu-suffix: add a suffix to the default interpreter name --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. If CPU is "ALL", generate a file for all known cpus --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 --persistent: if yes, the interpreter is loaded when binfmt is configured and remains in memory. All future uses are cloned from the open file. --preserve-argv0 preserve argv[0] 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 "$EXPORTDIR" } qemu_generate_register() { flags="" if [ "$CREDENTIAL" = "yes" ] ; then flags="OC" fi if [ "$PERSISTENT" = "yes" ] ; then flags="${flags}F" fi if [ "$PRESERVE_ARG0" = "yes" ] ; then flags="${flags}P" fi 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 credentials $CREDENTIAL preserve $PRESERVE_ARG0 fix_binary $PERSISTENT EOF } qemu_set_binfmts() { # probe cpu type host_family=$(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="$QEMU_PATH/qemu-i386" fi qemu="$qemu$QEMU_SUFFIX" if [ "$host_family" != "$family" ] ; then $BINFMT_SET fi done } CHECK=qemu_check_bintfmt_misc BINFMT_SET=qemu_register_interpreter SYSTEMDDIR="/etc/binfmt.d" DEBIANDIR="/usr/share/binfmts" QEMU_PATH=/usr/local/bin CREDENTIAL=no PERSISTENT=no PRESERVE_ARG0=no QEMU_SUFFIX="" options=$(getopt -o ds:Q:S:e:hc:p:g: -l debian,systemd:,qemu-path:,qemu-suffix:,exportdir:,help,credential:,persistent:,preserve-argv0: -- "$@") eval set -- "$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 if [ "$1" != "ALL" ] ; then 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 fi ;; -Q|--qemu-path) shift QEMU_PATH="$1" ;; -F|--qemu-suffix) shift QEMU_SUFFIX="$1" ;; -e|--exportdir) shift EXPORTDIR="$1" ;; -h|--help) usage exit 1 ;; -c|--credential) shift CREDENTIAL="$1" ;; -p|--persistent) shift PERSISTENT="$1" ;; -g|--preserve-argv0) shift PRESERVE_ARG0="$1" ;; *) break ;; esac shift done $CHECK qemu_set_binfmts