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125 lines
3.6 KiB
125 lines
3.6 KiB
#!/bin/bash -e
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# vim: set ts=4 sw=4 sts=4 et :
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#
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# Written by Jason Mehring (nrgaway@gmail.com)
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#
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# Kills any processes within the mounted location and
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# unmounts any mounts active within.
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#
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# To keep the actual mount mounted, add a '/' to end
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#
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# ${1}: directory to umount
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#
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# Examples:
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# To kill all processes and mounts within 'chroot-jessie' but keep
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# 'chroot-jessie' mounted:
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#
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# ./umount_kill.sh chroot-jessie/
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#
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# To kill all processes and mounts within 'chroot-jessie' AND also
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# umount 'chroot-jessie' mount:
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#
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# ./umount_kill.sh chroot-jessie
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#
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if [ "$VERBOSE" -ge 2 -o "$DEBUG" == "1" ]; then
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set -x
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fi
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. ./functions.sh
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mountPoint() {
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local mount_point="${1}"
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# We need absolute paths here so we don't kill everything
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if ! [[ "${mount_point}" = /* ]]; then
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mount_point="$(readlink -m .)/${mount_point}"
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fi
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# Strip any extra trailing slashes ('/') from path if they exist
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# since we are doing an exact string match on the path
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echo "$(echo "${mount_point}" | sed s#//*#/#g)"
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}
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mountPoints() {
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local mount_point="$(mountPoint "${1}")"
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echo "$(sudo grep "${mount_point}" /proc/mounts | cut -f2 -d" " | sort -r | grep "^${mount_point}")"
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}
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# ${1} = full path to mountpoint;
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# ${2} = if set will not umount; only kill processes in mount
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umount_kill() {
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if [ "${VERBOSE}" -le 2 ]; then
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# If enabled, turn off xtrace and remember its current setting.
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if test -o xtrace ; then
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true "$FUNCNAME: Disabling xtrace, because variable VERBOSE (${VERBOSE}) is lower than or equal 2..."
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set +x
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XTRACE_WAS_SET=true
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fi
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fi
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local mount_point="$(mountPoint "${1}")"
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local kill_only="${2}"
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declare -A cache
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# Sync the disk before un-mounting to be sure everything is written
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sync
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output "${red}Attempting to kill any processes still running in '${mount_point}' before un-mounting${reset}"
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mounts="$(mountPoints "${mount_point}")"
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for dir in ${mounts[@]}
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do
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# Escape filename (convert spaces to '\ ', etc
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dir="$(printf "${dir}")"
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# Skip if already in cache
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[[ ${cache["${dir}"]+_} ]] && continue || cache["${dir}"]=1
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# Kill of any processes within mountpoint
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sudo lsof "${dir}" 2> /dev/null | \
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grep "${dir}" | \
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tail -n +2 | \
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awk '{print $2}' | \
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xargs --no-run-if-empty sudo kill -9
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# Umount
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if ! [ "${kill_only}" ]; then
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# Mount point found in mtab
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if $(sudo mountpoint -q "${dir}"); then
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info "umount ${dir}"
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sudo umount -n "${dir}" 2> /dev/null || \
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sudo umount -n -l "${dir}" 2> /dev/null || \
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error "umount ${dir} unsuccessful!"
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# Umount entries not found within 'mountpoint'
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else
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# Look for (deleted) mountpoints
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info "not a regular mount point: ${dir}"
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base="$(basename "${dir}")"
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dir="$(dirname "${dir}")"
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base="$(echo "${base}" | sed 's/[\].*$//')"
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dir="${dir}/${base}"
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sudo umount -v -f -n "${dir}" 2> /dev/null || \
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sudo umount -v -f -n -l "${dir}" 2> /dev/null || \
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error "umount ${dir} unsuccessful!"
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fi
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fi
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done
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if [ "$XTRACE_WAS_SET" == "true" ] ; then
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set -x
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true "$FUNCNAME: Restoring xtrace..."
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fi
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}
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kill_processes_in_mount() {
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umount_kill ${1} "false" || :
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}
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if [ $(basename "${0}") == "umount_kill.sh" -a "${1}" ]; then
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umount_kill "${1}"
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fi
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