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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 | |
15 extern "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. | |
28 int fdwalk(void (*func)(void *, int), void *opaque); | |
29 | |
30 #ifdef __cplusplus | |
31 } // extern "C" | |
32 #endif | |
33 | |
34 #endif // WEBRTC_BASE_LINUXFDWALK_H_ | |
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