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cleanup cleanup

pull/5/head
Tomas M 2012-09-23 09:57:24 -05:00
parent 376d1bdcdb
commit 577e39375a
1 changed files with 15 additions and 10 deletions
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25
initramfs/cleanup
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@ -36,8 +36,11 @@ fi
if [ "$1" = "--start" ]; then if [ "$1" = "--start" ]; then
# this is our first call. We will setup everything so the actual init actually # This is the part which is to be called from shutdown script.
# reloads, but calls this script again instead of itself # We will assume init is running as process 1 and re-executes itself after 'telinit u'
# So we're going to force init to stop and start this script instead as PID 1
# If your init works differently, you may need to slightly modify few lines below
# - without this, init would be blocking union and it couldn't be unmounted later.
cd /mnt/live cd /mnt/live
cp "$0" sbin/init cp "$0" sbin/init
pivot_root . memory/union pivot_root . memory/union
@ -48,26 +51,28 @@ fi
if [ "$1" = "--init" ]; then if [ "$1" = "--init" ]; then
# now we're called from init to replace the process nr 1. # now we're called from init to replace the process nr 1.
# We know that init binary reexecutes itself with --init parameter
# All other processes are already killed # All other processes are already killed
# so our goal is just to unmount everything # so our goal now is just to unmount everything and reboot/shutdown
# First, mount proc again since it will be beeded # First, mount proc again since it will be needed and it was already unmounted
mount -t proc proc /proc >/dev/console 2>&1 mount -t proc proc /proc >/dev/console 2>&1
# next, unmount everything # next, unmount everything from union, backwards
tac /proc/mounts | grep union | cut -d " " -f 2 | while read LINE; do tac /proc/mounts | grep union | cut -d " " -f 2 | while read LINE; do
umount $LINE umount $LINE >/dev/console 2>&1
umount -l $LINE 2>/dev/null umount -l $LINE
done done
# and free up memory mounts, backwards
tac /proc/mounts | grep memory | cut -d " " -f 2 | while read LINE; do tac /proc/mounts | grep memory | cut -d " " -f 2 | while read LINE; do
umount $LINE umount $LINE >/dev/console 2>&1
umount -l $LINE 2>/dev/null umount -l $LINE
done done
# make sure the data directory is at least remounted read-only, # make sure the data directory is at least remounted read-only,
# if the previous unmount failed due to some busy err # if the previous unmount failed due to some busy err
mount -o remount,ro /memory/data 2>/dev/null mount -o remount,ro /memory/data >/dev/console 2>/dev/null
# if debug is requested, start commandline prompt here # if debug is requested, start commandline prompt here
if grep -q debug /proc/cmdline; then if grep -q debug /proc/cmdline; then