qubes-linux-template-builder/umount_kill.sh
2014-11-06 23:58:34 -05:00

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#!/bin/bash -e
#
# Written by Jason Mehring (nrgaway@gmail.com)
#
# Kills any processes within the mounted location and
# unmounts any mounts active within.
#
# To keep the actual mount mounted, add a '/' to end
#
# $1: directory to umount
#
# Examples:
# To kill all processes and mounts within 'chroot-jessie' but keep
# 'chroot-jessie' mounted:
#
# ./umount_kill.sh chroot-jessie/
#
# To kill all processes and mounts within 'chroot-jessie' AND also
# umount 'chroot-jessie' mount:
#
# ./umount_kill.sh chroot-jessie
#
. ./functions.sh
# $1 = full path to mount;
# $2 = if set will not umount; only kill processes in mount
umount_kill() {
MOUNTDIR="$1"
# We need absolute paths here so we don't kill everything
if ! [[ "${MOUNTDIR}" = /* ]]; then
MOUNTDIR="${PWD}/${MOUNTDIR}"
fi
# Strip any extra trailing slashes ('/') from path if they exist
# since we are doing an exact string match on the path
MOUNTDIR=$(echo "${MOUNTDIR}" | sed s#//*#/#g)
# Sync the disk befoe un-mounting to be sure everything is written
sync
warn "-> Attempting to kill any processes still running in '${MOUNTDIR}' before un-mounting"
for dir in $(sudo grep "${MOUNTDIR}" /proc/mounts | cut -f2 -d" " | sort -r | grep "^${MOUNTDIR}")
do
sudo lsof "$dir" 2> /dev/null | \
grep "$dir" | \
tail -n +2 | \
awk '{print $2}' | \
xargs --no-run-if-empty sudo kill -9
if ! [ "$2" ] && $(mountpoint -q "$dir"); then
info "un-mounting $dir"
sudo umount -n "$dir" 2> /dev/null || \
sudo umount -n -l "$dir" 2> /dev/null || \
error "umount $dir unsuccessful!"
elif ! [ "$2" ]; then
# Look for (deleted) mountpoints
info "not a regular mount point: $dir"
base=$(basename "$dir")
dir=$(dirname "$dir")
base=$(echo "$base" | sed 's/[\].*$//')
dir="$dir/$base"
sudo umount -v -f -n "$dir" 2> /dev/null || \
sudo umount -v -f -n -l "$dir" 2> /dev/null || \
error "umount $dir unsuccessful!"
fi
done
}
kill_processes_in_mount() {
umount_kill $1 "false" || :
}
if [ $(basename "$0") == "umount_kill.sh" -a "$1" ]; then
umount_kill "$1"
fi