diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 11:04:15 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 11:04:15 +0000 |
commit | e742cdfdd2bc0366aae514dff2d8288fe5db10ea (patch) | |
tree | 07754e1307d9f8f9540b3eede439bdbe27401cb2 /shutdown.in | |
parent | Initial commit. (diff) | |
download | molly-guard-e742cdfdd2bc0366aae514dff2d8288fe5db10ea.tar.xz molly-guard-e742cdfdd2bc0366aae514dff2d8288fe5db10ea.zip |
Adding upstream version 0.7.2.upstream/0.7.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rwxr-xr-x | shutdown.in | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/shutdown.in b/shutdown.in new file mode 100755 index 0000000..08579aa --- /dev/null +++ b/shutdown.in @@ -0,0 +1,126 @@ +#!/bin/sh +# +# shutdown -- wrapper script to guard against accidental shutdowns +# +# Copyright © martin f. krafft <madduck@madduck.net> +# Released under the terms of the Artistic Licence 2.0 +# +set -eu + +ME=molly-guard +VERSION=0.4 + +SCRIPTSDIR="@cfgdir@/run.d" + +CMD="${0##*/}" +EXEC="@REALPATH@/$CMD" + +case "$CMD" in + halt|reboot|shutdown|poweroff|coldreboot|pm-hibernate|pm-suspend|pm-suspend-hybrid) + if [ ! -f $EXEC ]; then + echo "E: not a regular file: $EXEC" >&2 + exit 4 + fi + if [ ! -x $EXEC ]; then + echo "E: not an executable: $EXEC" >&2 + exit 3 + fi + ;; + *) + echo "E: unsupported command: $CMD" >&2 + exit 1 + ;; +esac + +usage() +{ + cat <<-_eousage + Usage: $ME [options] [-- script options] + (shielding $EXEC) + + molly-guard's primary goal is to guard against accidental + shutdowns/reboots. $ME will run all scripts in $SCRIPTSDIR and only + invokes $EXEC if all scripts exited successfully. + + Specifying --molly-guard-do-nothing as argument to the command will + make $ME echo the command it would execute rather than actually + executing it. + + Options following the double hyphen will be passed unchanged to the + scripts. + + Please see molly-guard(8) for more information. + + The actual command's help output follows: + + _eousage +} + +CMDARGS= +SCRIPTARGS= +END_OF_ARGS=0 +DO_NOTHING=0 +for arg in "$@"; do + case "$arg" in + (*-molly-guard-do-nothing) DO_NOTHING=1;; + (*-help) + usage 2>&1 + eval $EXEC --help 2>&1 + exit 0 + ;; + --) END_OF_ARGS=1;; + *\"*) + echo 'E: cannot use double-quotes (") in arguments' >&2 + exit 1 + ;; + *) + if [ $END_OF_ARGS -eq 0 ]; then + CMDARGS="${CMDARGS:+$CMDARGS }\"$arg\"" + else + SCRIPTARGS="${SCRIPTARGS:+$SCRIPTARGS }--arg \"$arg\"" + fi + ;; + esac +done + +do_real_cmd() +{ + if [ $DO_NOTHING -eq 1 ]; then + echo "$ME: would run: $EXEC $CMDARGS" + exit 0 + else + eval exec $EXEC "$CMDARGS" + fi +} + +if [ $DO_NOTHING -eq 1 ]; then + echo "I: demo mode; $ME will not do anything due to --molly-guard-do-nothing." >&2 +fi + +if [ -n "${MOLLYGUARD_CMD:-}" ]; then + do_real_cmd +fi + +MOLLYGUARD_CMD=$CMD; export MOLLYGUARD_CMD +MOLLYGUARD_DO_NOTHING=$DO_NOTHING; export MOLLYGUARD_DO_NOTHING +MOLLYGUARD_SETTINGS="@cfgdir@/rc"; export MOLLYGUARD_SETTINGS + +# pass through certain commands +case "$CMD $CMDARGS" in + (*shutdown\ *-c*|*halt\ *-w*|*halt\ *-f*|*reboot\ *-f*) + # allow canceling shutdowns, only write wtmp and force immediate halt + echo "I: executing $CMD $CMDARGS regardless of check results." >&2 + do_real_cmd + ;; +esac + +for script in $(run-parts --test $SCRIPTSDIR); do + ret=0 + eval $script $SCRIPTARGS || ret=$? + if [ $ret -ne 0 ]; then + echo "W: aborting $CMD due to ${script##*/} exiting with code $ret." >&2 + exit $ret + fi +done + +do_real_cmd |