Add -D (daemonize) and -P (pid file) options.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@1411 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishlog/varnishlog.1

@@ -28,7 +28,7 @@
 .\"
 .\" $Id$
 .\"
-.Dd April 21, 2007
+.Dd May 11, 2007
 .Dt VARNISHLOG 1
 .Os
 .Sh NAME
@@ -40,10 +40,12 @@
 .Op Fl b
 .Op Fl C
 .Op Fl c
+.Op Fl D
 .Op Fl d
 .Op Fl I Ar regex
 .Op Fl i Ar tag
 .Op Fl o
+.Op Fl P Ar file
 .Op Fl r Ar file
 .Op Fl V
 .Op Fl w Ar file
@@ -82,6 +84,8 @@ nor
 is specified,
 .Nm
 acts as if they both were.
+.It Fl D
+Daemonize.
 .It Fl d
 Process old log entries on startup.
 Normally,
@@ -107,6 +111,9 @@ Group log entries by request ID.
 This has no effect when writing to a file using the
 .Fl w
 option.
+.It Fl P Ar file
+Write the process's PID to the specified
+.Ar file .
 .It Fl r Ar file
 Read log entries from
 .Ar file

bin/varnishlog/varnishlog.c

@@ -40,15 +40,24 @@
 #include <string.h>
 #include <unistd.h>
 
+#ifndef HAVE_DAEMON
+#include "compat/daemon.h"
+#endif
+
+#ifdef HAVE_VIS_H
+#include <vis.h>
+#else
 #include "compat/vis.h"
+#endif
 
 #include "vsb.h"
+#include "vpf.h"
 
 #include "libvarnish.h"
 #include "shmlog.h"
 #include "varnishapi.h"
 
-static int	bflag, cflag;
+static int	b_flag, c_flag;
 
 /* -------------------------------------------------------------------*/
 
@@ -100,7 +109,7 @@ h_order(void *priv, enum shmlogtag tag, unsigned fd, unsigned len, unsigned spec
 	(void)priv;
 
 	if (!(spec & (VSL_S_CLIENT|VSL_S_BACKEND))) {
-		if (!bflag && !cflag)
+		if (!b_flag && !c_flag)
 			VSL_H_Print(stdout, tag, fd, len, spec, ptr);
 		return (0);
 	}
@@ -179,12 +188,12 @@ do_order(struct VSL_data *vd, int argc, char **argv)
 			exit (2);
 		}
 	}
-	if (!bflag) {
+	if (!b_flag) {
 		VSL_Select(vd, SLT_SessionOpen);
 		VSL_Select(vd, SLT_SessionClose);
 		VSL_Select(vd, SLT_ReqEnd);
 	}
-	if (!cflag) {
+	if (!c_flag) {
 		VSL_Select(vd, SLT_BackendOpen);
 		VSL_Select(vd, SLT_BackendClose);
 		VSL_Select(vd, SLT_BackendReuse);
@@ -264,7 +273,7 @@ static void
 usage(void)
 {
 	fprintf(stderr,
-	    "usage: varnishlog %s [-aoV] [-w file]\n", VSL_USAGE);
+	    "usage: varnishlog %s [-aDoV] [-P file] [-w file]\n", VSL_USAGE);
 	exit(1);
 }
 
@@ -272,20 +281,28 @@ int
 main(int argc, char **argv)
 {
 	int i, c;
-	int a_flag = 0, o_flag = 0;
-	char *w_opt = NULL;
+	int a_flag = 0, D_flag = 0, o_flag = 0;
+	const char *P_opt = NULL;
+	const char *w_opt = NULL;
+	struct pidfh *pfh = NULL;
 	struct VSL_data *vd;
 
 	vd = VSL_New();
 
-	while ((c = getopt(argc, argv, VSL_ARGS "aoVw:")) != -1) {
+	while ((c = getopt(argc, argv, VSL_ARGS "aDoP:Vw:")) != -1) {
 		switch (c) {
 		case 'a':
 			a_flag = 1;
 			break;
+		case 'D':
+			D_flag = 1;
+			break;
 		case 'o':
 			o_flag = 1;
 			break;
+		case 'P':
+			P_opt = optarg;
+			break;
 		case 'V':
 			varnish_version("varnishlog");
 			exit(0);
@@ -293,12 +310,12 @@ main(int argc, char **argv)
 			w_opt = optarg;
 			break;
 		case 'c':
-			cflag = 1;
+			c_flag = 1;
 			if (VSL_Arg(vd, c, optarg) > 0)
 				break;
 			usage();
 		case 'b':
-			bflag = 1;
+			b_flag = 1;
 			if (VSL_Arg(vd, c, optarg) > 0)
 				break;
 			usage();
@@ -313,7 +330,22 @@ main(int argc, char **argv)
 		usage();
 
 	if (VSL_OpenLog(vd))
-		exit (1);
+		exit(1);
+
+	if (P_opt && (pfh = vpf_open(P_opt, 0600, NULL)) == NULL) {
+		perror(P_opt);
+		exit(1);
+	}
+
+	if (D_flag && daemon(0, 0) == -1) {
+		perror("daemon()");
+		if (pfh != NULL)
+			vpf_remove(pfh);
+		exit(1);
+	}
+
+	if (pfh != NULL)
+		vpf_write(pfh);
 
 	if (w_opt != NULL)
 		do_write(vd, w_opt, a_flag);
@@ -329,5 +361,7 @@ main(int argc, char **argv)
 			break;
 	}
 
+	if (pfh != NULL)
+		vpf_remove(pfh);
 	return (0);
 }