diff options
Diffstat (limited to 'rc.d/init.d/functions')
-rw-r--r-- | rc.d/init.d/functions | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/rc.d/init.d/functions b/rc.d/init.d/functions index 45c71f93..7a4fde04 100644 --- a/rc.d/init.d/functions +++ b/rc.d/init.d/functions @@ -111,6 +111,76 @@ __umount_loop() { done } +# Similar to __umount loop above, without calling fuser +__umount_loop_2() { + local remaining= + local count + + #call regular umount + remaining=$(LC_ALL=C awk "/^#/ {next} $1" "$2" | sort -r) + action "$3" fstab-decode umount $remaining + + count=4 + remaining=$(LC_ALL=C awk "/^#/ {next} $1" "$2" | sort -r) + while [ "$count" -gt 0 ]; do + [ -z "$remaining" ] && break + count=$(($count-1)) + usleep 500000 + remaining=$(LC_ALL=C awk "/^#/ {next} $1" "$2" | sort -r) + done + [ -z "$remaining" ] && return 0 + + devs=$(stat -c "%d" $remaining) + action "$4" fstab-decode umount "-l" $remaining + + # find fds that don't start with /, are not sockets or pipes or other. + # these are potentially detached fds + detached_fds=$(find /proc/ -regex '/proc/[0-9]+/fd/.*' -printf "%p %l\n" 2>/dev/null |\ + grep -Ev '/proc/[0-9]+/fd/[0-9]+ (/.*|inotify|\[.+\]|(socket|pipe):\[[0-9]+\])') + + # check each detached fd to see if it has the same device + # as one of our lazy umounted filesystems + kill_list= + [ -n "$detached_fds" ] && while read fdline; do + fd=${fdline%% *} + pid=$(echo $fdline | sed -r 's/\/proc\/([0-9]+).+/\1/') + fd_dev=$(stat -L -c "%d" $fd) + for dev in $devs ; do + [ "$dev" = "$fd_dev" ] && kill_list+="$pid " + done + done <<< "$detached_fds" + + [ -n "$kill_list" ] && kill $kill_list + + # run a little wait/check loop for procs to exit + count=4 + while [ "$count" -gt 0 ] ; do + [ -z "$kill_list" ] && break + count=$(($count-1)) + usleep 500000 + remaining= + for pid in $kill_list ; do + [ -d "/proc/$pid" ] && remaining+="$pid " + done + kill_list=$remaining + done + + # try to finish the job: + if [ -n "$kill_list" ] ; then + kill -9 $kill_list + usleep 500000 + # last check + remaining= + for pid in $kill_list ; do + [ -d "/proc/$pid" ] && remaining+="$pid " + done + kill_list=$remaining + fi + STRING=$"Killing processes with open filedescriptors on the unmounted disk:" + [ -z "$kill_list" ] && success "$STRING" || failure "$STRING" + echo +} + # Similar to __umount loop above, specialized for loopback devices __umount_loopback_loop() { local remaining devremaining sig= |