Commit 01ecd22a authored by Laurent Vivier's avatar Laurent Vivier
Browse files

qemu-binfmt-conf.sh: add persistent (F) flags 



Since kernel commit 948b701a607f
(binfmt_misc: add persistent opened binary handler for containers)
kernel allows to load the interpreter at the configuration time.

In case of chroot, it allows to have the interpreter in the host root
filesystem and not to copy it to the chroot filesystem.

Signed-off-by: default avatarLaurent Vivier <laurent@vivier.eu>
Message-Id: <20180627205317.10343-3-laurent@vivier.eu>
parent 70a77984

scripts/qemu-binfmt-conf.sh

+13 −1
Original line number Diff line number Diff line
@@ -161,6 +161,7 @@ usage() { 
    cat <<EOF

Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU]

                           [--help][--credential yes|no][--exportdir PATH]

                           [--persistent yes|no]



       Configure binfmt_misc to use qemu interpreter
@@ -176,6 +177,9 @@ Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU] 
                     (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.



    To import templates with update-binfmts, use :
@@ -245,6 +249,9 @@ qemu_generate_register() { 
    if [ "$CREDENTIAL" = "yes" ] ; then

        flags="OC"

    fi

    if [ "$PERSISTENT" = "yes" ] ; then

        flags="${flags}F"

    fi



    echo ":qemu-$cpu:M::$magic:$mask:$qemu:$flags"

}
@@ -304,8 +311,9 @@ DEBIANDIR="/usr/share/binfmts" 


QEMU_PATH=/usr/local/bin

CREDENTIAL=no

PERSISTENT=no



options=$(getopt -o ds:Q:e:hc: -l debian,systemd:,qemu-path:,exportdir:,help,credential: -- "$@")

options=$(getopt -o ds:Q:e:hc:p: -l debian,systemd:,qemu-path:,exportdir:,help,credential:,persistent: -- "$@")

eval set -- "$options"



while true ; do
@@ -353,6 +361,10 @@ while true ; do 
        shift

        CREDENTIAL="$1"

        ;;

    -p|--persistent)

        shift

        PERSISTENT="$1"

        ;;

    *)

        break

        ;;