libglusterfs: Bring in os_daemon() routine to replace FreeBSD code

Change-Id: I72dda0bb9e3b6cfa8b8ecffe85cc606f5a682313
BUG: 3206
Reviewed-on: http://review.gluster.com/119
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/libglusterfs/src/daemon.c b/libglusterfs/src/daemon.c
new file mode 100644
index 000000000..36196e201
--- /dev/null
+++ b/libglusterfs/src/daemon.c
@@ -0,0 +1,61 @@
+/*
+  Copyright (c) 2011 Gluster, Inc. <http://www.gluster.com>
+  This file is part of GlusterFS.
+
+  GlusterFS is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published
+  by the Free Software Foundation; either version 3 of the License,
+  or (at your option) any later version.
+
+  GlusterFS is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with this program.  If not, see
+  <http://www.gnu.org/licenses/>.
+*/
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+
+int
+os_daemon (int nochdir, int noclose)
+{
+	pid_t   pid = -1;
+	int     ret = -1;
+        FILE    *ptr = NULL;
+
+	ret = fork();
+
+        switch (ret) {
+        case -1:
+                return (-1);
+        case 0:
+                break;
+        default:
+                _exit(0);
+        }
+
+	pid = setsid();
+
+	if (pid == -1) {
+                ret = -1;
+		goto out;
+        }
+
+	if (!nochdir)
+		ret = chdir("/");
+
+        if (!noclose) {
+                ptr = freopen ("/dev/null", "r", stdin);
+                ptr = freopen ("/dev/null", "w", stdout);
+                ptr = freopen ("/dev/null", "w", stderr);
+	}
+
+        ret = 0;
+out:
+	return ret;
+}