[PATCH] Write pid files for klogd, ntpd and watchdog

[Anthony G. Basile]

From: "Anthony G. Basile" <blueness at gentoo.org>

Several applets can be run as daemons, such as syslogd.  These
write pid files but a few, like klogd, ntpd and watchdog, do not.
We add write_pidfile() for these as is done for syslogd.  This
gives initialization systems like openrc better control over
those daemons.  See the downstream bug

    https://bugs.gentoo.org/show_bug.cgi?id=445434

Signed-off-by: Anthony G. Basile <blueness at gentoo.org>
---
 miscutils/watchdog.c |    2 ++
 networking/ntpd.c    |    2 ++
 sysklogd/klogd.c     |    2 ++
 3 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/miscutils/watchdog.c b/miscutils/watchdog.c
index ee28dc3..52abe0e 100644
--- a/miscutils/watchdog.c
+++ b/miscutils/watchdog.c
@@ -95,6 +95,8 @@ int watchdog_main(int argc, char **argv)
 		stimer_duration, htimer_duration * 1000);
 #endif
 
+	write_pidfile("/var/run/watchdog.pid");
+
 	while (1) {
 		/*
 		 * Make sure we clear the counter before sleeping,
diff --git a/networking/ntpd.c b/networking/ntpd.c
index 5b92db6..c0e4ccf 100644
--- a/networking/ntpd.c
+++ b/networking/ntpd.c
@@ -2080,6 +2080,8 @@ int ntpd_main(int argc UNUSED_PARAM, char **argv)
 	 */
 	cnt = G.peer_cnt * (INITIAL_SAMPLES + 1);
 
+	write_pidfile("/var/run/ntpd.pid");
+
 	while (!bb_got_signal) {
 		llist_t *item;
 		unsigned i, j;
diff --git a/sysklogd/klogd.c b/sysklogd/klogd.c
index efa0e53..3504e34 100644
--- a/sysklogd/klogd.c
+++ b/sysklogd/klogd.c
@@ -195,6 +195,8 @@ int klogd_main(int argc UNUSED_PARAM, char **argv)
 
 	syslog(LOG_NOTICE, "klogd started: %s", bb_banner);
 
+	write_pidfile("/var/run/klogd.pid");
+
 	used = 0;
 	while (!bb_got_signal) {
 		int n;
-- 
1.7.8.6