CONFIG_PID_FILE_PATH: new configuration option for pidfile paths

We set a default path for the directory where pidfiles are create
when FEATURE_PIDFILE is selected.  The default has no effect on
applets which must specify a pidfile path on the command line to
run, and it can be overridden by applets which optionally allow
the user to specify the pidfile path.

We also add pidfile write/remove support for klogd, ntpd and watchdog.
For syslogd, we add a missing remove_pidfile() for better cleanup
on daemon exit.

Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/networking/ntpd.c b/networking/ntpd.c
index 5b92db6f6..7facf9484 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(CONFIG_PID_FILE_PATH "/ntpd.pid");
+
         while (!bb_got_signal) {
                 llist_t *item;
                 unsigned i, j;
@@ -2195,6 +2197,7 @@ int ntpd_main(int argc UNUSED_PARAM, char **argv)
                 }
         } /* while (!bb_got_signal) */
 
+        remove_pidfile(CONFIG_PID_FILE_PATH "/ntpd.pid");
         kill_myself_with_sig(bb_got_signal);
 }