btxld(8): Convert to hostprog.
[dragonfly.git] / lib / libc_r / uthread / uthread_recvfrom.c
blobb812b1ce67503f87fd97096a27975f49d31e3960
1 /*
2 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>
3 * All rights reserved.
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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by John Birrell.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
32 * $FreeBSD: src/lib/libc_r/uthread/uthread_recvfrom.c,v 1.9.2.5 2003/01/17 07:56:43 ru Exp $
33 * $DragonFly: src/lib/libc_r/uthread/uthread_recvfrom.c,v 1.3 2006/06/27 13:30:24 corecode Exp $
35 #include <errno.h>
36 #include <sys/types.h>
37 #include <sys/socket.h>
38 #include <fcntl.h>
39 #include <pthread.h>
40 #include "pthread_private.h"
42 ssize_t
43 _recvfrom(int fd, void *buf, size_t len, int flags, struct sockaddr * from,
44 socklen_t *from_len)
46 struct pthread *curthread = _get_curthread();
47 int ret;
49 flags |= MSG_FNONBLOCKING;
51 if ((ret = _FD_LOCK(fd, FD_READ, NULL)) == 0) {
52 while ((ret = __sys_recvfrom(fd, buf, len, flags, from, from_len)) < 0) {
53 if (((_thread_fd_getflags(fd) & O_NONBLOCK) == 0)
54 && ((errno == EWOULDBLOCK) || (errno == EAGAIN))) {
55 curthread->data.fd.fd = fd;
57 /* Set the timeout: */
58 _thread_kern_set_timeout(NULL);
59 curthread->interrupted = 0;
60 _thread_kern_sched_state(PS_FDR_WAIT, __FILE__, __LINE__);
62 /* Check if the wait was interrupted: */
63 if (curthread->interrupted) {
64 /* Return an error status: */
65 errno = EINTR;
66 ret = -1;
67 break;
69 } else {
70 ret = -1;
71 break;
74 _FD_UNLOCK(fd, FD_READ);
76 return (ret);
79 ssize_t
80 recvfrom(int fd, void *buf, size_t len, int flags, struct sockaddr * from,
81 socklen_t *from_len)
83 int ret;
85 _thread_enter_cancellation_point();
86 ret = _recvfrom(fd, buf, len, flags, from, from_len);
87 _thread_leave_cancellation_point();
89 return (ret);