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Date:      Mon, 16 Nov 2015 22:40:49 +0000 (UTC)
From:      Garrett Cooper <ngie@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-user@freebsd.org
Subject:   svn commit: r290955 - user/ngie/more-tests2/sbin/ggate/ggated
Message-ID:  <201511162240.tAGMenR0090857@repo.freebsd.org>

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Author: ngie
Date: Mon Nov 16 22:40:49 2015
New Revision: 290955
URL: https://svnweb.freebsd.org/changeset/base/290955

Log:
  Add pidfile support to ggated

Modified:
  user/ngie/more-tests2/sbin/ggate/ggated/Makefile
  user/ngie/more-tests2/sbin/ggate/ggated/ggated.8
  user/ngie/more-tests2/sbin/ggate/ggated/ggated.c

Modified: user/ngie/more-tests2/sbin/ggate/ggated/Makefile
==============================================================================
--- user/ngie/more-tests2/sbin/ggate/ggated/Makefile	Mon Nov 16 22:37:28 2015	(r290954)
+++ user/ngie/more-tests2/sbin/ggate/ggated/Makefile	Mon Nov 16 22:40:49 2015	(r290955)
@@ -6,7 +6,7 @@ PROG=	ggated
 MAN=	ggated.8
 SRCS=	ggated.c ggate.c
 
-LIBADD=	pthread
+LIBADD=	pthread util
 
 CFLAGS+= -I${.CURDIR}/../shared
 

Modified: user/ngie/more-tests2/sbin/ggate/ggated/ggated.8
==============================================================================
--- user/ngie/more-tests2/sbin/ggate/ggated/ggated.8	Mon Nov 16 22:37:28 2015	(r290954)
+++ user/ngie/more-tests2/sbin/ggate/ggated/ggated.8	Mon Nov 16 22:40:49 2015	(r290955)
@@ -37,6 +37,7 @@
 .Op Fl v
 .Op Fl a Ar address
 .Op Fl p Ar port
+.Op Fl F Ar pidfile
 .Op Fl R Ar rcvbuf
 .Op Fl S Ar sndbuf
 .Op Ar "exports file"
@@ -67,6 +68,10 @@ Port on which
 .Nm
 listens for connections.
 Default is 3080.
+.It Fl F Ar pidfile
+PID file that
+.Nm
+uses.
 .It Fl R Ar rcvbuf
 Size of receive buffer to use.
 Default is 131072 (128kB).
@@ -86,6 +91,14 @@ The format of an exports file is as foll
 1.2.3.0/24	RW	/tmp/test.img
 hostname	WO	/tmp/image
 .Ed
+.El
+.Sh FILES
+.Bl -tag -width ".Pa /var/run/ggated.pid" -compact
+.It Pa /var/run/ggated.pid
+The default location of the
+.Nm
+PID file.
+.El
 .Sh EXIT STATUS
 Exit status is 0 on success, or 1 if the command fails.
 To get details about the failure,

Modified: user/ngie/more-tests2/sbin/ggate/ggated/ggated.c
==============================================================================
--- user/ngie/more-tests2/sbin/ggate/ggated/ggated.c	Mon Nov 16 22:37:28 2015	(r290954)
+++ user/ngie/more-tests2/sbin/ggate/ggated/ggated.c	Mon Nov 16 22:40:49 2015	(r290955)
@@ -43,6 +43,8 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <libgen.h>
+#include <libutil.h>
+#include <paths.h>
 #include <pthread.h>
 #include <signal.h>
 #include <stdarg.h>
@@ -946,15 +948,18 @@ huphandler(int sig __unused)
 int
 main(int argc, char *argv[])
 {
+	const char *ggated_pidfile = _PATH_VARRUN "/ggated.pid";
+	struct pidfh *pfh;
 	struct sockaddr_in serv;
 	struct sockaddr from;
 	socklen_t fromlen;
+	pid_t otherpid;
 	int ch, sfd, tmpsfd;
 	unsigned port;
 
 	bindaddr = htonl(INADDR_ANY);
 	port = G_GATE_PORT;
-	while ((ch = getopt(argc, argv, "a:hnp:R:S:v")) != -1) {
+	while ((ch = getopt(argc, argv, "a:hnp:F:R:S:v")) != -1) {
 		switch (ch) {
 		case 'a':
 			bindaddr = g_gate_str2ip(optarg);
@@ -963,6 +968,9 @@ main(int argc, char *argv[])
 				    "Invalid IP/host name to bind to.");
 			}
 			break;
+		case 'F':
+			ggated_pidfile = optarg;
+			break;
 		case 'n':
 			nagle = 0;
 			break;
@@ -999,12 +1007,23 @@ main(int argc, char *argv[])
 		exports_file = argv[0];
 	exports_get();
 
+	pfh = pidfile_open(ggated_pidfile, 0600, &otherpid);
+	if (pfh == NULL) {
+		if (errno == EEXIST) {
+			errx(EXIT_FAILURE, "Daemon already running, pid: %jd.",
+			    (intmax_t)otherpid);
+		}
+		err(EXIT_FAILURE, "Cannot open/create pidfile");
+	}
+
 	if (!g_gate_verbose) {
 		/* Run in daemon mode. */
 		if (daemon(0, 0) == -1)
 			g_gate_xlog("Cannot daemonize: %s", strerror(errno));
 	}
 
+	pidfile_write(pfh);
+
 	signal(SIGCHLD, SIG_IGN);
 
 	sfd = socket(AF_INET, SOCK_STREAM, 0);
@@ -1041,5 +1060,6 @@ main(int argc, char *argv[])
 			close(tmpsfd);
 	}
 	close(sfd);
+	pidfile_remove(pfh);
 	exit(EXIT_SUCCESS);
 }



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