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Diffstat (limited to 'openvpn/src/compat/compat-daemon.c')
-rw-r--r--openvpn/src/compat/compat-daemon.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/openvpn/src/compat/compat-daemon.c b/openvpn/src/compat/compat-daemon.c
new file mode 100644
index 00000000..dde96a20
--- /dev/null
+++ b/openvpn/src/compat/compat-daemon.c
@@ -0,0 +1,100 @@
+/*
+ * OpenVPN -- An application to securely tunnel IP networks
+ * over a single UDP port, with support for SSL/TLS-based
+ * session authentication and key exchange,
+ * packet encryption, packet authentication, and
+ * packet compression.
+ *
+ * Copyright (C) 2011 - David Sommerseth <davids@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (see the file COPYING included with this
+ * distribution); if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#elif defined(_MSC_VER)
+#include "config-msvc.h"
+#endif
+
+#ifndef HAVE_DAEMON
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+int
+daemon(int nochdir, int noclose)
+{
+#if defined(HAVE_FORK) && defined(HAVE_SETSID)
+ switch (fork()) {
+ case -1:
+ return (-1);
+ case 0:
+ break;
+ default:
+ exit(0);
+ }
+
+ if (setsid() == -1)
+ return (-1);
+
+ if (!nochdir)
+ chdir("/");
+
+ if (!noclose) {
+#if defined(HAVE_DUP) && defined(HAVE_DUP2)
+ int fd;
+ if ((fd = open ("/dev/null", O_RDWR, 0)) != -1) {
+ dup2 (fd, 0);
+ dup2 (fd, 1);
+ dup2 (fd, 2);
+ if (fd > 2) {
+ close (fd);
+ }
+ }
+#endif
+ }
+
+ return 0;
+#else
+ (void)nochdir;
+ (void)noclose;
+ errno = EFAULT;
+ return -1;
+#endif
+}
+
+#endif
+