Pull in FreeBSD's daemon(3) for platforms that lack it.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@2106 d4fa192b-c00b-0410-8231-f00ffab90ce4

include/Makefile.am

@@ -7,12 +7,13 @@ pkginclude_HEADERS = \
 	stats.h \
 	varnishapi.h
 
-noinst_HEADERS = \
+nobase_noinst_HEADERS = \
 	binary_heap.h \
 	cli.h \
 	cli_common.h \
 	cli_priv.h \
 	compat/asprintf.h \
+	compat/daemon.h \
 	compat/setproctitle.h \
 	compat/srandomdev.h \
 	compat/strlcat.h \

include/compat/daemon.h

+/*-
+ * Copyright (c) 2006 Verdens Gang AS
+ * Copyright (c) 2006-2007 Linpro AS
+ * All rights reserved.
+ *
+ * Author: Dag-Erling Smørgrav <des@linpro.no>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id$
+ */
+
+#ifndef COMPAT_DAEMON_H_INCLUDED
+#define COMPAT_DAEMON_H_INCLUDED
+
+#ifndef HAVE_DAEMON
+int daemon(int nochdir, int noclose);
+#endif
+
+#endif

lib/libvarnishcompat/Makefile.am

@@ -6,6 +6,7 @@ lib_LTLIBRARIES = libvarnishcompat.la
 
 libvarnishcompat_la_SOURCES = \
 	asprintf.c \
+	daemon.c \
 	vasprintf.c \
 	setproctitle.c \
 	srandomdev.c \

lib/libvarnishcompat/daemon.c

+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id$
+ * Derived from:
+ * $FreeBSD: src/lib/libc/gen/daemon.c,v 1.8 2007/01/09 00:27:53 imp Exp $
+ */
+
+#ifndef HAVE_DAEMON
+
+#include <errno.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include "compat/daemon.h"
+
+int
+daemon(int nochdir, int noclose)
+{
+	struct sigaction osa, sa;
+	int fd;
+	pid_t newgrp;
+	int oerrno;
+	int osa_ok;
+
+	/* A SIGHUP may be thrown when the parent exits below. */
+	sigemptyset(&sa.sa_mask);
+	sa.sa_handler = SIG_IGN;
+	sa.sa_flags = 0;
+	osa_ok = sigaction(SIGHUP, &sa, &osa);
+
+	switch (fork()) {
+	case -1:
+		return (-1);
+	case 0:
+		break;
+	default:
+		exit(0);
+	}
+
+	newgrp = setsid();
+	oerrno = errno;
+	if (osa_ok != -1)
+		sigaction(SIGHUP, &osa, NULL);
+
+	if (newgrp == -1) {
+		errno = oerrno;
+		return (-1);
+	}
+
+	if (!nochdir)
+		(void)chdir("/");
+
+	if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
+		(void)dup2(fd, STDIN_FILENO);
+		(void)dup2(fd, STDOUT_FILENO);
+		(void)dup2(fd, STDERR_FILENO);
+		if (fd > 2)
+			(void)close(fd);
+	}
+	return (0);
+}
+
+#endif