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-rw-r--r--include/usage.h5
-rw-r--r--miscutils/watchdog.c11
2 files changed, 12 insertions, 4 deletions
diff --git a/include/usage.h b/include/usage.h
index 712eede..4aed166 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -3372,11 +3372,12 @@ USE_FEATURE_START_STOP_DAEMON_FANCY( \
"Mon Dec 17 10:31:44 GMT 2000"
#define watchdog_trivial_usage \
- "[-t <seconds>] DEV"
+ "[-t <seconds>] [-F] DEV"
#define watchdog_full_usage \
"Periodically write to watchdog device DEV.\n" \
"Options:\n" \
- "\t-t\tTimer period in seconds - default is 30"
+ "\t-t\tTimer period in seconds - default is 30\n" \
+ "\t-F\tStay in the foreground and don't fork"
#define wc_trivial_usage \
"[OPTION]... [FILE]..."
diff --git a/miscutils/watchdog.c b/miscutils/watchdog.c
index e8275e6..ddd349d 100644
--- a/miscutils/watchdog.c
+++ b/miscutils/watchdog.c
@@ -15,6 +15,9 @@
#include <stdlib.h>
#include <signal.h>
+#define OPT_FOREGROUND 0x01
+#define OPT_TIMER 0x02
+
/* Watchdog file descriptor */
static int fd;
@@ -27,10 +30,13 @@ static void watchdog_shutdown(int ATTRIBUTE_UNUSED unused)
int watchdog_main(int argc, char **argv)
{
+ unsigned long opts;
unsigned long timer_duration = 30; /* Userspace timer duration, in seconds */
char *t_arg;
- if (bb_getopt_ulflags(argc, argv, "t:", &t_arg))
+ opts = bb_getopt_ulflags(argc, argv, "Ft:", &t_arg);
+
+ if (opts & OPT_TIMER)
timer_duration = bb_xgetlarg(t_arg, 10, 0, INT_MAX);
/* We're only interested in the watchdog device .. */
@@ -38,7 +44,8 @@ int watchdog_main(int argc, char **argv)
bb_show_usage();
#ifdef BB_NOMMU
- vfork_daemon(0, 1);
+ if (!(opts & OPT_FOREGROUND))
+ vfork_daemon_rexec(0, 1, argc, argv, "-F");
#else
bb_xdaemon(0, 1);
#endif