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      1 #!/bin/sh
      2 #
      3 # $NetBSD: rc.shutdown,v 1.10 2024/12/07 18:45:20 martin Exp $
      4 #
      5 # rc.shutdown --
      6 #	Run the scripts in /etc/rc.d with reverse rcorder.
      7 
      8 #	System shutdown script run by shutdown(8) at system shutdown time.
      9 #	Note that halt(8) and reboot(8) do NOT invoke this script.
     10 
     11 export HOME=/
     12 export PATH=/sbin:/bin:/usr/sbin:/usr/bin
     13 
     14 . /etc/rc.subr
     15 . /etc/rc.conf
     16 
     17 if ! checkyesno do_rcshutdown; then
     18 	echo "Skipping shutdown hooks."
     19 	exit 0
     20 fi
     21 
     22 _rcshutdown_action="$1"
     23 set --
     24 
     25 stty status '^T'
     26 
     27 #	Set shell to ignore SIGINT, but not children;
     28 #	shell catches SIGQUIT and returns to single user.
     29 #
     30 trap : INT
     31 trap "echo 'Shutdown interrupted.'; exit 1" QUIT
     32 
     33 #	If requested, start a watchdog timer in the background which
     34 #	will terminate rc.shutdown if rc.shutdown doesn't complete
     35 #	within the specified time.
     36 #
     37 _rcshutdown_watchdog=
     38 if [ -n "$rcshutdown_timeout" ]; then
     39 	sleep $rcshutdown_timeout && (
     40 	    _msg="$rcshutdown_timeout second watchdog timeout expired. Shutdown terminated."
     41 	    logger -t rc.shutdown "$_msg"
     42 	    echo "$_msg"
     43 	    date
     44 	    kill -KILL $$ >/dev/null 2>&1
     45 	    ) &
     46 	_rcshutdown_watchdog=$!
     47 fi
     48 
     49 
     50 #	Determine the shutdown order of the rc.d scripts,
     51 #	and perform the operation
     52 #
     53 scripts=$(for rcd in ${rc_directories:-/etc/rc.d}; do
     54 	test -d ${rcd} && echo ${rcd}/*; done)
     55 files=$(rcorder -k shutdown ${rcshutdown_rcorder_flags} ${scripts})
     56 
     57 for _rc_elem in $(reverse_list $files); do
     58 	run_rc_script $_rc_elem stop
     59 done
     60 
     61 #
     62 #	Run final local handlers (if any exist)
     63 #
     64 if [ -r /etc/rc.shutdown.final ]; then
     65 	set -- "$_rcshutdown_action"
     66 	. /etc/rc.shutdown.final
     67 fi
     68 
     69 
     70 #	Terminate the background watchdog timer (if it is running)
     71 #
     72 if [ -n "$_rcshutdown_watchdog" ]; then
     73 	kill -TERM $_rcshutdown_watchdog >/dev/null 2>&1
     74 fi
     75 
     76 date
     77 exit 0
     78