131 lines
2.7 KiB
Plaintext
131 lines
2.7 KiB
Plaintext
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#! /bin/sh
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### BEGIN INIT INFO
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# Provides: umountfs
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# Required-Start:
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# Required-Stop: umountroot
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# Default-Start:
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# Default-Stop: 0 6
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# Short-Description: Turn off swap and unmount all local file systems.
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# Description:
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### END INIT INFO
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PATH=/sbin:/usr/sbin:/bin:/usr/bin
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. /lib/init/vars.sh
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. /lib/lsb/init-functions
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umask 022
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do_stop () {
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PROTECTED_MOUNTS="$(sed -n ':a;/^[^ ]* \/ /!{H;n;ba};{H;s/.*//;x;s/\n//;p}' /proc/mounts)"
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WEAK_MTPTS="" # be gentle, don't use force
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REG_MTPTS=""
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TMPFS_MTPTS=""
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while read -r DEV MTPT FSTYPE REST
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do
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echo "$PROTECTED_MOUNTS" | grep -qs "^$DEV $MTPT " && continue
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case "$MTPT" in
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/|/proc|/dev|/.dev|/dev/pts|/dev/shm|/dev/.static/dev|/proc/*|/sys|/sys/*|/run|/run/*|/dev/vcs)
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continue
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;;
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esac
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case "$FSTYPE" in
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proc|procfs|linprocfs|sysfs|usbfs|usbdevfs|devpts)
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continue
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;;
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tmpfs)
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TMPFS_MTPTS="$MTPT $TMPFS_MTPTS"
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;;
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*)
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if echo "$PROTECTED_MOUNTS" | grep -qs "^$DEV "; then
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WEAK_MTPTS="$MTPT $WEAK_MTPTS"
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else
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REG_MTPTS="$MTPT $REG_MTPTS"
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fi
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;;
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esac
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done < /proc/mounts
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#
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# Make sure tmpfs file systems are umounted before turning off
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# swap, to avoid running out of memory if the tmpfs filesystems
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# use a lot of space.
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#
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if [ "$TMPFS_MTPTS" ]
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then
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if [ "$VERBOSE" = no ]
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then
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log_action_begin_msg "Unmounting temporary filesystems"
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fstab-decode umount $TMPFS_MTPTS
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log_action_end_msg $?
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else
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log_daemon_msg "Will now unmount temporary filesystems"
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fstab-decode umount -v $TMPFS_MTPTS
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log_end_msg $?
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fi
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fi
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#
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# Deactivate swap
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#
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if [ "$VERBOSE" = no ]
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then
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log_action_begin_msg "Deactivating swap"
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swapoff -a >/dev/null
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log_action_end_msg $?
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else
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log_daemon_msg "Will now deactivate swap"
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swapoff -a -v
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log_end_msg $?
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fi
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#
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# Unmount local filesystems
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#
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if [ "$WEAK_MTPTS" ]; then
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# Do not use -f umount option for WEAK_MTPTS
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if [ "$VERBOSE" = no ]
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then
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log_action_begin_msg "Unmounting weak filesystems"
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fstab-decode umount -r -d $WEAK_MTPTS
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log_action_end_msg $?
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else
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log_daemon_msg "Will now unmount weak filesystems"
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fstab-decode umount -v -r -d $WEAK_MTPTS
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log_end_msg $?
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fi
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fi
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if [ "$REG_MTPTS" ]
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then
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if [ "$VERBOSE" = no ]
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then
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log_action_begin_msg "Unmounting local filesystems"
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fstab-decode umount -f -r -d $REG_MTPTS
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log_action_end_msg $?
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else
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log_daemon_msg "Will now unmount local filesystems"
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fstab-decode umount -f -v -r -d $REG_MTPTS
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log_end_msg $?
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fi
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fi
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}
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case "$1" in
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start|status)
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# No-op
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;;
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restart|reload|force-reload)
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echo "Error: argument '$1' not supported" >&2
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exit 3
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;;
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stop)
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do_stop
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;;
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*)
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echo "Usage: $0 start|stop" >&2
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exit 3
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;;
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esac
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:
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