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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 11:04:15 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 11:04:15 +0000
commite742cdfdd2bc0366aae514dff2d8288fe5db10ea (patch)
tree07754e1307d9f8f9540b3eede439bdbe27401cb2 /shutdown.in
parentInitial commit. (diff)
downloadmolly-guard-upstream.tar.xz
molly-guard-upstream.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-xshutdown.in126
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