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diff --git a/contrib/apple/daemon.c b/contrib/apple/daemon.c
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+/*
+ Copyright (c) 2010 Gluster, Inc. <http://www.gluster.com>
+
+ Based on http://www.opensource.apple.com/source/Libc/Libc-583/gen/FreeBSD/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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 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.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <signal.h>
+#include <unistd.h>
+
+int
+os_daemon(nochdir, noclose)
+ int nochdir, 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);
+}