- Write pid file if filename is set

[l2tpns.git] / l2tpns.c

diff --git a/l2tpns.c b/l2tpns.c
index 6a74ffd..47ce8d9 100644 (file)
--- a/l2tpns.c
+++ b/l2tpns.c
@@ -4,7 +4,7 @@
 // Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced
 // vim: sw=8 ts=8
 
-char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.18 2004-07-28 06:12:30 fred_nerk Exp $";
+char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.19 2004-08-02 03:38:01 fred_nerk Exp $";
 
 #include <arpa/inet.h>
 #include <assert.h>
@@ -94,6 +94,7 @@ int bgp_configured = 0;
 struct config_descriptt config_values[] = {
        CONFIG("debug", debug, INT),
        CONFIG("log_file", log_filename, STRING),
+       CONFIG("pid_file", pid_file, STRING),
        CONFIG("l2tp_secret", l2tpsecret, STRING),
        CONFIG("primary_dns", default_dns1, IP),
        CONFIG("secondary_dns", default_dns2, IP),
@@ -2995,6 +2996,10 @@ int main(int argc, char *argv[])
        /* remove plugins (so cleanup code gets run) */
        plugins_done();
 
+       // Remove the PID file if we wrote it
+       if (config->wrote_pid && *config->pid_file == '/')
+               unlink(config->pid_file);
+
        /* kill CLI children */
        signal(SIGTERM, SIG_IGN);
        kill(0, SIGTERM);
@@ -3401,6 +3406,22 @@ void update_config()
                timeout = config->cluster_hb_timeout;
        }
 
+       // Write PID file
+       if (*config->pid_file == '/' && !config->wrote_pid)
+       {
+               FILE *f;
+               if ((f = fopen(config->pid_file, "w")))
+               {
+                       fprintf(f, "%d\n", getpid());
+                       fclose(f);
+                       config->wrote_pid = 1;
+               }
+               else
+               {
+                       log(0, 0, 0, 0, "Can't write to PID file %s: %s\n", config->pid_file, strerror(errno));
+               }
+       }
+
        config->reload_config = 0;
 }