libglusterfs: Bring in os_daemon_* routines to replace modified FreeBSD code

Change-Id: I41f4635b1b75adb6d22e2e325b99941f8d7a0b42
BUG: 3206
Reviewed-on: http://review.gluster.com/100
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amar@gluster.com>

3 files changed, 103 insertions, 3 deletions

diff --git a/libglusterfs/src/Makefile.am b/libglusterfs/src/Makefile.am
index 3405ee5c319..0f932cb303e 100644
--- a/libglusterfs/src/Makefile.am
+++ b/libglusterfs/src/Makefile.am
@@ -6,11 +6,11 @@ libglusterfs_la_LIBADD = @LEXLIB@
 
 lib_LTLIBRARIES = libglusterfs.la
 
-libglusterfs_la_SOURCES = dict.c graph.lex.c y.tab.c xlator.c logging.c  hashfn.c defaults.c common-utils.c timer.c inode.c call-stub.c compat.c fd.c compat-errno.c event.c mem-pool.c gf-dirent.c syscall.c iobuf.c globals.c statedump.c stack.c checksum.c $(CONTRIBDIR)/md5/md5.c $(CONTRIBDIR)/rbtree/rb.c rbthash.c latency.c graph.c $(CONTRIBDIR)/uuid/clear.c $(CONTRIBDIR)/uuid/copy.c $(CONTRIBDIR)/uuid/gen_uuid.c $(CONTRIBDIR)/uuid/pack.c $(CONTRIBDIR)/uuid/parse.c $(CONTRIBDIR)/uuid/unparse.c $(CONTRIBDIR)/uuid/uuid_time.c $(CONTRIBDIR)/uuid/compare.c $(CONTRIBDIR)/uuid/isnull.c $(CONTRIBDIR)/uuid/unpack.c syncop.c graph-print.c trie.c run.c
+libglusterfs_la_SOURCES = dict.c graph.lex.c y.tab.c xlator.c logging.c  hashfn.c defaults.c common-utils.c timer.c inode.c call-stub.c compat.c fd.c compat-errno.c event.c mem-pool.c gf-dirent.c syscall.c iobuf.c globals.c statedump.c stack.c checksum.c daemon.c $(CONTRIBDIR)/md5/md5.c $(CONTRIBDIR)/rbtree/rb.c rbthash.c latency.c graph.c $(CONTRIBDIR)/uuid/clear.c $(CONTRIBDIR)/uuid/copy.c $(CONTRIBDIR)/uuid/gen_uuid.c $(CONTRIBDIR)/uuid/pack.c $(CONTRIBDIR)/uuid/parse.c $(CONTRIBDIR)/uuid/unparse.c $(CONTRIBDIR)/uuid/uuid_time.c $(CONTRIBDIR)/uuid/compare.c $(CONTRIBDIR)/uuid/isnull.c $(CONTRIBDIR)/uuid/unpack.c syncop.c graph-print.c trie.c run.c
 
-noinst_HEADERS = common-utils.h defaults.h dict.h glusterfs.h hashfn.h logging.h  xlator.h  stack.h timer.h list.h inode.h call-stub.h compat.h fd.h revision.h compat-errno.h event.h mem-pool.h byte-order.h gf-dirent.h locking.h syscall.h iobuf.h globals.h statedump.h checksum.h $(CONTRIBDIR)/md5/md5.h $(CONTRIBDIR)/rbtree/rb.h rbthash.h iatt.h latency.h mem-types.h $(CONTRIBDIR)/uuid/uuidd.h $(CONTRIBDIR)/uuid/uuid.h $(CONTRIBDIR)/uuid/uuidP.h $(CONTRIBDIR)/uuid/uuid_types.h syncop.h graph-utils.h trie.h run.h
+noinst_HEADERS = common-utils.h defaults.h dict.h glusterfs.h hashfn.h logging.h  xlator.h  stack.h timer.h list.h inode.h call-stub.h compat.h fd.h revision.h compat-errno.h event.h mem-pool.h byte-order.h gf-dirent.h locking.h syscall.h iobuf.h globals.h statedump.h checksum.h daemon.h $(CONTRIBDIR)/md5/md5.h $(CONTRIBDIR)/rbtree/rb.h rbthash.h iatt.h latency.h mem-types.h $(CONTRIBDIR)/uuid/uuidd.h $(CONTRIBDIR)/uuid/uuid.h $(CONTRIBDIR)/uuid/uuidP.h $(CONTRIBDIR)/uuid/uuid_types.h syncop.h graph-utils.h trie.h run.h
 
-EXTRA_DIST = graph.l graph.y $(CONTRIBDIR)/apple/daemon.c $(CONTRIBDIR)/apple/daemon.h
+EXTRA_DIST = graph.l graph.y
 
 graph.lex.c: graph.l y.tab.h
 	$(LEX) -t $(srcdir)/graph.l > $@
diff --git a/libglusterfs/src/daemon.c b/libglusterfs/src/daemon.c
new file mode 100644
index 00000000000..a6476ec2e95
--- /dev/null
+++ b/libglusterfs/src/daemon.c
@@ -0,0 +1,68 @@
+/*
+  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>
+#include "daemon.h"
+
+int
+os_daemon_return (int nochdir, int noclose)
+{
+	pid_t   pid  = -1;
+	int     ret  = -1;
+        FILE    *ptr = NULL;
+
+
+	ret = fork();
+	if (ret)
+		return ret;
+
+	pid = setsid();
+
+	if (pid == -1) {
+                ret = -1;
+		goto out;
+        }
+
+	if (!nochdir)
+		ret = chdir("/");
+
+        if (!noclose) {
+                ptr = freopen (DEVNULLPATH, "r", stdin);
+                ptr = freopen (DEVNULLPATH, "w", stdout);
+                ptr = freopen (DEVNULLPATH, "w", stderr);
+	}
+
+        ret = 0;
+out:
+	return ret;
+}
+
+int
+os_daemon (int nochdir, int noclose)
+{
+	int ret = -1;
+
+	ret = os_daemon_return (nochdir, noclose);
+	if (ret <= 0)
+		return ret;
+
+	_exit (0);
+}
diff --git a/libglusterfs/src/daemon.h b/libglusterfs/src/daemon.h
new file mode 100644
index 00000000000..c1ecd3c3770
--- /dev/null
+++ b/libglusterfs/src/daemon.h
@@ -0,0 +1,32 @@
+/*
+   Copyright (c) 2010 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/>.
+*/
+
+#ifndef _DAEMON_H
+#define _DAEMON_H
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#define DEVNULLPATH "/dev/null"
+
+int os_daemon_return(int nochdir, int noclose);
+int os_daemon(int nochdir, int noclose);
+#endif /*_DAEMON_H */