1/*
2 * Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies).
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef UniStdExtras_h
27#define UniStdExtras_h
28
29#include <errno.h>
30#include <unistd.h>
31
32namespace WTF {
33
34WTF_EXPORT_PRIVATE bool setCloseOnExec(int fileDescriptor);
35WTF_EXPORT_PRIVATE int dupCloseOnExec(int fileDescriptor);
36
37inline int closeWithRetry(int fileDescriptor)
38{
39 int ret;
40#if OS(LINUX)
41 // Workaround for the Linux behavior of closing the descriptor
42 // unconditionally, even if the close() call is interrupted.
43 // See https://bugs.webkit.org/show_bug.cgi?id=117266 for more
44 // details.
45 if ((ret = close(fileDescriptor)) == -1 && errno == EINTR)
46 return 0;
47#else
48 while ((ret = close(fileDescriptor)) == -1 && errno == EINTR) { }
49#endif
50 return ret;
51}
52
53WTF_EXPORT_PRIVATE bool setNonBlock(int fileDescriptor);
54
55} // namespace WTF
56
57using WTF::closeWithRetry;
58using WTF::dupCloseOnExec;
59using WTF::setCloseOnExec;
60using WTF::setNonBlock;
61
62#endif // UniStdExtras_h
63