diff options
| -rw-r--r-- | usr.sbin/watchdogd/watchdogd.8 | 18 | ||||
| -rw-r--r-- | usr.sbin/watchdogd/watchdogd.c | 16 |
2 files changed, 26 insertions, 8 deletions
diff --git a/usr.sbin/watchdogd/watchdogd.8 b/usr.sbin/watchdogd/watchdogd.8 index e60f42d..a83e775 100644 --- a/usr.sbin/watchdogd/watchdogd.8 +++ b/usr.sbin/watchdogd/watchdogd.8 @@ -27,7 +27,7 @@ .\" .\" $FreeBSD$ .\" -.Dd November 16, 2014 +.Dd May 11, 2015 .Dt WATCHDOGD 8 .Os .Sh NAME @@ -46,6 +46,7 @@ .Op Fl s Ar sleep .Op Fl t Ar timeout .Op Fl T Ar script_timeout +.Op Fl x Ar exit_timeout .Sh DESCRIPTION The .Nm @@ -103,14 +104,25 @@ defaults to the value specified by the .Fl s Ar sleep option. .Pp +The +.Fl x Ar exit_timeout +argument is the timeout period (in seconds) to leave in effect when the +program exits. +Using +.Fl x +with a non-zero value protects against lockup during a reboot by +triggering a hardware reset if the software reboot doesn't complete +before the given timeout expires. +.Pp Upon receiving the .Dv SIGTERM or .Dv SIGINT signals, .Nm -will first instruct the kernel to no longer perform watchdog checks and then -will terminate. +will terminate, after first instructing the kernel to either disable the +timeout or reset it to the value given by +.Fl x Ar exit_timeout . .Pp The .Nm diff --git a/usr.sbin/watchdogd/watchdogd.c b/usr.sbin/watchdogd/watchdogd.c index 767aa8e..55210d6 100644 --- a/usr.sbin/watchdogd/watchdogd.c +++ b/usr.sbin/watchdogd/watchdogd.c @@ -77,6 +77,7 @@ static int debugging = 0; static int end_program = 0; static const char *pidfile = _PATH_VARRUN "watchdogd.pid"; static u_int timeout = WD_TO_128SEC; +static u_int exit_timeout = WD_TO_NEVER; static u_int pretimeout = 0; static u_int timeout_sec; static u_int passive = 0; @@ -461,10 +462,10 @@ watchdog_onoff(int onoff) /* pat one more time for good measure */ return watchdog_patpat((timeout|WD_ACTIVE)); } else { - return watchdog_patpat(0); + return watchdog_patpat(exit_timeout); } failsafe: - watchdog_patpat(0); + watchdog_patpat(exit_timeout); return (error); } @@ -476,8 +477,8 @@ usage(void) { if (is_daemon) fprintf(stderr, "usage:\n" -" watchdogd [-dnSw] [-e cmd] [-I file] [-s sleep] [-t timeout]\n" -" [-T script_timeout]\n" +" watchdogd [-dnSw] [-e cmd] [-I pidfile] [-s sleep] [-t timeout]\n" +" [-T script_timeout] [-x exit_timeout]\n" " [--debug]\n" " [--pretimeout seconds] [-pretimeout-action action]\n" " [--softtimeout] [-softtimeout-action action]\n" @@ -697,7 +698,7 @@ parseargs(int argc, char *argv[]) is_daemon = 1; if (is_daemon) - getopt_shortopts = "I:de:ns:t:ST:w?"; + getopt_shortopts = "I:de:ns:t:ST:wx:?"; else getopt_shortopts = "dt:?"; @@ -741,6 +742,11 @@ parseargs(int argc, char *argv[]) case 'w': do_timedog = 1; break; + case 'x': + exit_timeout = parse_timeout_to_pow2ns(c, NULL, optarg); + if (exit_timeout != 0) + exit_timeout |= WD_ACTIVE; + break; case 0: lopt = longopts[longindex].name; if (!strcmp(lopt, "pretimeout")) { |
