1/*
2 *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#ifndef WEBRTC_BASE_LINUXFDWALK_H_
12#define WEBRTC_BASE_LINUXFDWALK_H_
13
14#ifdef __cplusplus
15extern "C" {
16#endif
17
18// Linux port of SunOS's fdwalk(3) call. It loops over all open file descriptors
19// and calls func on each one. Additionally, it is safe to use from the child
20// of a fork that hasn't exec'ed yet, so you can use it to close all open file
21// descriptors prior to exec'ing a daemon.
22// The return value is 0 if successful, or else -1 and errno is set. The
23// possible errors include any error that can be returned by opendir(),
24// readdir(), or closedir(), plus EBADF if there are problems parsing the
25// contents of /proc/self/fd.
26// The file descriptors that are enumerated will not include the file descriptor
27// used for the enumeration itself.
28int fdwalk(void (*func)(void *, int), void *opaque);
29
30#ifdef __cplusplus
31}  // extern "C"
32#endif
33
34#endif  // WEBRTC_BASE_LINUXFDWALK_H_
35