Adds a modified copy of talk/base to webrtc/base. It is the first step in
migrating talk/base to webrtc/base.
BUG=N/A
R=niklas.enbom@webrtc.org
Review URL: https://webrtc-codereview.appspot.com/17479005
git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@6129 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/base/linuxfdwalk.h b/base/linuxfdwalk.h
new file mode 100644
index 0000000..fe5a697
--- /dev/null
+++ b/base/linuxfdwalk.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_BASE_LINUXFDWALK_H_
+#define WEBRTC_BASE_LINUXFDWALK_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Linux port of SunOS's fdwalk(3) call. It loops over all open file descriptors
+// and calls func on each one. Additionally, it is safe to use from the child
+// of a fork that hasn't exec'ed yet, so you can use it to close all open file
+// descriptors prior to exec'ing a daemon.
+// The return value is 0 if successful, or else -1 and errno is set. The
+// possible errors include any error that can be returned by opendir(),
+// readdir(), or closedir(), plus EBADF if there are problems parsing the
+// contents of /proc/self/fd.
+// The file descriptors that are enumerated will not include the file descriptor
+// used for the enumeration itself.
+int fdwalk(void (*func)(void *, int), void *opaque);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // WEBRTC_BASE_LINUXFDWALK_H_
