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iopu: add -c option to run any command in the newroot env.

Browse source 
Also fix so that it is safe to ctrl-c in all cases and not get
bind mounts hanging around.

if command has arguments make the entire command a string like.

iopu -c "cat /etc/os-release"
This commit is contained in:
Kenneth Johansson 2019-12-02 17:35:46 +01:00
parent 946b7a453c
commit f7b13cf973
1 changed files with 30 additions and 6 deletions
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36
iopupgrade/files/sbin/iopu
View file

@ -70,6 +70,18 @@ function finish {
lock -u /tmp/iopu.lock
}
function ctrl_c {
# on ctrl-c we remove the exit handler as it is called directly.
trap - EXIT
# call cleanup function
finish
# do not continue program
exit 1
}
function sig_pipe {
log_stdout=0 # stdin,stdout,stderr do not exist anymore
log "Got sigpipe. Turning of log printing to stdout"
@ -148,6 +160,17 @@ function usage {
echo " -r Jump into chroot env of other system"
}
# Execute command in newroot(other system root)
function newroot_exec {
upd_vol=$(get_flashbank_next)
mount_newroot
(ENV=/sbin/iopu_chroot_env chroot /tmp/newroot_overlay $1)
echo ""
umount_newroot
}
###############################################################################
# just one instance
@ -161,10 +184,11 @@ then
fi
trap finish EXIT
trap ctrl_c INT
trap timeout SIGALRM
trap sig_pipe SIGPIPE
while getopts "nrxbh" opt; do
while getopts "nrxbhc:" opt; do
case $opt in
n)
upd_noreboot=1
@ -176,11 +200,11 @@ while getopts "nrxbh" opt; do
upd_forceboot=1
;;
r)
upd_vol=$(get_flashbank_next)
mount_newroot
(ENV=/sbin/iopu_chroot_env chroot /tmp/newroot_overlay /bin/sh)
echo ""
umount_newroot
newroot_exec /bin/sh
exit 0
;;
c)
newroot_exec "${OPTARG}"
exit 0
;;
h)