MPD
fd_util.h
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1 /*
2  * Copyright (C) 2003-2010 The Music Player Daemon Project
3  * http://www.musicpd.org
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * - Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  *
12  * - Redistributions in binary form must reproduce the above copyright
13  * notice, this list of conditions and the following disclaimer in the
14  * documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
20  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
24  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
25  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 /*
30  * This library provides easy helper functions for working with file
31  * descriptors. It has wrappers for taking advantage of Linux 2.6
32  * specific features like O_CLOEXEC.
33  *
34  */
35 
36 #ifndef FD_UTIL_H
37 #define FD_UTIL_H
38 
39 #include "check.h"
40 
41 #include <stdbool.h>
42 #include <stddef.h>
43 
44 #ifndef WIN32
45 #if !defined(_GNU_SOURCE) && (defined(HAVE_PIPE2) || defined(HAVE_ACCEPT4))
46 #define _GNU_SOURCE
47 #endif
48 
49 #include <sys/types.h>
50 #endif
51 
52 struct sockaddr;
53 
58 int
59 dup_cloexec(int oldfd);
60 
65 int
66 open_cloexec(const char *path_fs, int flags, int mode);
67 
72 int
73 pipe_cloexec(int fd[2]);
74 
82 int
83 pipe_cloexec_nonblock(int fd[2]);
84 
85 #ifndef WIN32
86 
91 int
92 socketpair_cloexec(int domain, int type, int protocol, int sv[2]);
93 
94 #endif
95 
100 int
101 socket_cloexec_nonblock(int domain, int type, int protocol);
102 
107 int
108 accept_cloexec_nonblock(int fd, struct sockaddr *address,
109  size_t *address_length_r);
110 
111 
112 #ifndef WIN32
113 
114 struct msghdr;
115 
120 ssize_t
121 recvmsg_cloexec(int sockfd, struct msghdr *msg, int flags);
122 
123 #endif
124 
125 #ifdef HAVE_INOTIFY_INIT
126 
131 int
132 inotify_init_cloexec(void);
133 
134 #endif
135 
139 int
140 close_socket(int fd);
141 
142 #endif