1 /* $OpenBSD: uthread_sendmsg.c,v 1.5 2003/12/23 19:31:05 brad Exp $ */
2 /*
3 * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by John Birrell.
17 * 4. Neither the name of the author nor the names of any co-contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * $FreeBSD: uthread_sendmsg.c,v 1.4 1999/08/28 00:03:46 peter Exp $
34 */
35 #include <errno.h>
36 #include <sys/types.h>
37 #include <sys/socket.h>
38 #include <fcntl.h>
39 #ifdef _THREAD_SAFE
40 #include <pthread.h>
41 #include "pthread_private.h"
42
43 ssize_t
sendmsg(int fd,const struct msghdr * msg,int flags)44 sendmsg(int fd, const struct msghdr *msg, int flags)
45 {
46 struct pthread *curthread = _get_curthread();
47 int ret;
48
49 /* This is a cancellation point: */
50 _thread_enter_cancellation_point();
51
52 if ((ret = _FD_LOCK(fd, FD_WRITE, NULL)) == 0) {
53 while ((ret = _thread_sys_sendmsg(fd, msg, flags)) < 0) {
54 if (!(_thread_fd_table[fd]->flags & O_NONBLOCK) && ((errno == EWOULDBLOCK) || (errno == EAGAIN))) {
55 curthread->data.fd.fd = fd;
56
57 /* Set the timeout: */
58 _thread_kern_set_timeout(NULL);
59 curthread->interrupted = 0;
60 _thread_kern_sched_state(PS_FDW_WAIT, __FILE__, __LINE__);
61
62 /* Check if the operation was interrupted: */
63 if (curthread->interrupted) {
64 errno = EINTR;
65 ret = -1;
66 break;
67 }
68 } else {
69 ret = -1;
70 break;
71 }
72 }
73 _FD_UNLOCK(fd, FD_WRITE);
74 }
75
76 /* No longer in a cancellation point: */
77 _thread_leave_cancellation_point();
78
79 return (ret);
80 }
81 #endif
82