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Viewing changes to utopic/etc/init.d/umountfs

  • Committer: Dimitri John Ledkov
  • Date: 2014-11-19 12:58:41 UTC
  • Revision ID: dimitri.j.ledkov@intel.com-20141119125841-98dr37roy8dvcv3b
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utopic/etc/init.d/umountfs
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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/*)
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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)
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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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