77 lines
1.8 KiB
Bash
77 lines
1.8 KiB
Bash
# Copyright 2007 Gentoo Foundation
|
|
# Distributed under the terms of the GNU General Public License v2
|
|
|
|
# bool do_unmount(char *cmd, char *no_unmounts, char *nodes, char *fslist)
|
|
# Handy function to handle all our unmounting needs
|
|
# find-mount is a C program to actually find our mounts on our supported OS's
|
|
do_unmount() {
|
|
local cmd="$1" retval=0 retry=
|
|
local f_opts="-m -c" f_kill="-s " mnt=
|
|
if [ "${RC_UNAME}" = "Linux" ] ; then
|
|
f_opts="-m"
|
|
f_kill="-"
|
|
fi
|
|
|
|
local mnts="$(mountinfo ${2:+--skip-regex} $2 ${3:+--node-regex} $3 ${4:+--fstype-regex} $4 --reverse \
|
|
| sed -e "s/'/'\\\\''/g" -e "s/^/'/g" -e "s/$/'/g")"
|
|
eval set -- ${mnts}
|
|
for mnt in "$@" ; do
|
|
case "${cmd}" in
|
|
umount*)
|
|
# If we're using the mount (probably /usr) then don't unmount us
|
|
local pids="$(fuser ${f_opts} "${mnt}" 2>/dev/null)"
|
|
case " ${pids} " in
|
|
*" $$ "*)
|
|
ewarn "We are using ${mnt}, not unmounting"
|
|
continue
|
|
;;
|
|
esac
|
|
ebegin "Unmounting ${mnt}"
|
|
;;
|
|
*)
|
|
ebegin "Remounting ${mnt}"
|
|
;;
|
|
esac
|
|
|
|
retry=3
|
|
while ! LC_ALL=C ${cmd} "${mnt}" 2>/dev/null ; do
|
|
# Don't kill if it's us (/ and possibly /usr)
|
|
local pids="$(fuser ${f_opts} "${mnt}" 2>/dev/null)"
|
|
case " ${pids} " in
|
|
*" $$ "*) retry=0 ;;
|
|
" ") eend 1 "in use but fuser finds nothing"; retry=0 ;;
|
|
*)
|
|
local sig="KILL"
|
|
[ ${retry} -gt 0 ] && sig="TERM"
|
|
fuser ${f_kill}${sig} -k ${f_opts} "${mnt}" \
|
|
>/dev/null 2>/dev/null
|
|
sleep 1
|
|
retry=$((${retry} - 1))
|
|
;;
|
|
esac
|
|
|
|
# OK, try forcing things
|
|
if [ ${retry} -le 0 ] ; then
|
|
case "${cmd}" in
|
|
umount*)
|
|
LC_ALL=C ${cmd} ${extra_opts} "${mnt}" || retry=-999
|
|
;;
|
|
*)
|
|
retry=-999
|
|
;;
|
|
esac
|
|
break
|
|
fi
|
|
done
|
|
if [ ${retry} -eq -999 ] ; then
|
|
eend 1
|
|
retval=1
|
|
else
|
|
eend 0
|
|
fi
|
|
done
|
|
return ${retval}
|
|
}
|
|
|
|
# vim: set ts=4 :
|