71 lines
2.1 KiB
Plaintext
71 lines
2.1 KiB
Plaintext
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#!/bin/bash
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#
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# Forcefully unmount ~/.enc and run any hooks
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#
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# Copyright (C) 2013 Mike Gerwitz
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# This script mercilessly unmounts ~/.enc by killing any processes that are
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# using files within it, running hooks both before and after. The preunmount
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# hook has the chance to abort or delay the operation (delay by re-invoking
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# this script).
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#
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# Run this as root to be certain that unmount will succeed.
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##
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encpath="$HOME/.enc"
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avail="$encpath/.available"
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preunmount="$encpath/.preunmount"
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postunmount="$encpath/.postunmount"
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# if not mounted, then abort
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[ -e "$avail" ] || exit
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# execute pre-mount script to allow system-specific preparation
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[ -x "$preunmount" ] && {
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"$preunmount" || {
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err=$?
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echo "fatal: $preunmount failed!" >&2
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exit $err
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}
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}
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# kill anything using this process, attempting to do so gracefully first by
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# giving them some time to handle SIGTERM, after which we force any
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# remaining processes to terminate
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s=5
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fuser -Mm "$encpath" -k -TERM \
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&& echo "Waiting $s seconds for above processes to terminate (SIGTERM)..." \
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&& sleep "$s" \
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&& echo "Terminating any remaining processes (SIGKILL)..." \
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&& fuser -Mm "$encpath" -k -KILL
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# now that no processes are using the directory, unmount
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fusermount -u "$encpath" \
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&& {
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[ ! -x "$postunmount" ] || "$postunmount" || {
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err=$?
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echo "warning: unmounted, but $postunmount failed!"
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exit $err
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}
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} \
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|| {
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err=$?
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echo "fatal: umount failed!"
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exit $?
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}
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echo "$encpath unmounted."
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