1 #ifndef _BABELTRACE_COMPAT_SEND_H
2 #define _BABELTRACE_COMPAT_SEND_H
5 * babeltrace/compat/send.h
7 * Copyright (C) 2015 Michael Jeanson <mjeanson@efficios.com>
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 * copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * This wrapper is used on platforms that have no way of ignoring SIGPIPE
32 * during a send(). Instead, we set the signal action to ignore. This is OK
33 * in a single-threaded app, but would be problematic in a multi-threaded app
34 * since sigaction applies to all threads.
39 # define MSG_NOSIGNAL SO_NOSIGPIPE
43 #if defined(MSG_NOSIGNAL)
45 ssize_t
bt_send_nosigpipe(int fd
, const void *buffer
, size_t size
)
47 return send(fd
, buffer
, size
, MSG_NOSIGNAL
);
51 ssize_t
bt_send_nosigpipe(int fd
, const void *buffer
, size_t size
)
55 struct sigaction act
, oldact
;
57 /* Set SIGPIPE action to ignore and save current signal action */
58 act
.sa_handler
= SIG_IGN
;
59 if (sigaction(SIGPIPE
, &act
, &oldact
)) {
65 /* Send and save errno */
66 sent
= send(fd
, buffer
, size
, 0);
69 /* Restore original signal action */
70 if (sigaction(SIGPIPE
, &oldact
, NULL
)) {
76 /* Restore send() errno */
83 #endif /* _BABELTRACE_COMPAT_SEND_H */
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