]> CyberLeo.Net >> Repos - FreeBSD/releng/8.1.git/blob - lib/libc_r/uthread/uthread_sendmsg.c
Copy stable/8 to releng/8.1 in preparation for 8.1-RC1.
[FreeBSD/releng/8.1.git] / lib / libc_r / uthread / uthread_sendmsg.c
1 /*
2  * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>
3  * All rights reserved.
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  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the author nor the names of any co-contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * $FreeBSD$
30  */
31 #include <errno.h>
32 #include <sys/types.h>
33 #include <sys/socket.h>
34 #include <fcntl.h>
35 #include <pthread.h>
36 #include "pthread_private.h"
37
38 __weak_reference(__sendmsg, sendmsg);
39
40 ssize_t
41 _sendmsg(int fd, const struct msghdr *msg, int flags)
42 {
43         struct pthread  *curthread = _get_curthread();
44         int             ret;
45
46         if ((ret = _FD_LOCK(fd, FD_WRITE, NULL)) == 0) {
47                 while ((ret = __sys_sendmsg(fd, msg, flags)) < 0) {
48                         if (!(_thread_fd_getflags(fd) & O_NONBLOCK)
49                             && ((errno == EWOULDBLOCK) || (errno == EAGAIN))) {
50                                 curthread->data.fd.fd = fd;
51
52                                 /* Set the timeout: */
53                                 _thread_kern_set_timeout(NULL);
54                                 curthread->interrupted = 0;
55                                 _thread_kern_sched_state(PS_FDW_WAIT, __FILE__, __LINE__);
56
57                                 /* Check if the operation was interrupted: */
58                                 if (curthread->interrupted) {
59                                         errno = EINTR;
60                                         ret = -1;
61                                         break;
62                                 }
63                         } else {
64                                 ret = -1;
65                                 break;
66                         }
67                 }
68                 _FD_UNLOCK(fd, FD_WRITE);
69         }
70         return (ret);
71 }
72
73 ssize_t
74 __sendmsg(int fd, const struct msghdr *msg, int flags)
75 {
76         int ret;
77
78         _thread_enter_cancellation_point();
79         ret = _sendmsg(fd, msg, flags);
80         _thread_leave_cancellation_point();
81
82         return (ret);
83 }