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-rw-r--r--src/openvpn/fdmisc.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/src/openvpn/fdmisc.c b/src/openvpn/fdmisc.c
new file mode 100644
index 0000000..7fe449c
--- /dev/null
+++ b/src/openvpn/fdmisc.c
@@ -0,0 +1,78 @@
+/*
+ * 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) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
+ *
+ * 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
+
+#include "syshead.h"
+
+#include "fdmisc.h"
+#include "error.h"
+
+#include "memdbg.h"
+
+/* Set a file descriptor to non-blocking */
+bool
+set_nonblock_action (int fd)
+{
+#ifdef WIN32
+ u_long arg = 1;
+ if (ioctlsocket (fd, FIONBIO, &arg))
+ return false;
+#else
+ if (fcntl (fd, F_SETFL, O_NONBLOCK) < 0)
+ return false;
+#endif
+ return true;
+}
+
+/* Set a file descriptor to not be passed across execs */
+bool
+set_cloexec_action (int fd)
+{
+#ifndef WIN32
+ if (fcntl (fd, F_SETFD, FD_CLOEXEC) < 0)
+ return false;
+#endif
+ return true;
+}
+
+/* Set a file descriptor to non-blocking */
+void
+set_nonblock (int fd)
+{
+ if (!set_nonblock_action (fd))
+ msg (M_ERR, "Set socket to non-blocking mode failed");
+}
+
+/* Set a file descriptor to not be passed across execs */
+void
+set_cloexec (int fd)
+{
+ if (!set_cloexec_action (fd))
+ msg (M_ERR, "Set FD_CLOEXEC flag on file descriptor failed");
+}