2 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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
32 * $FreeBSD: src/lib/libc_r/uthread/uthread_accept.c,v 1.13.2.5 2003/01/17 07:56:43 ru Exp $
33 * $DragonFly: src/lib/libc_r/uthread/uthread_accept.c,v 1.3 2006/06/14 01:45:28 dillon Exp $
37 #include <sys/types.h>
38 #include <sys/socket.h>
41 #include "pthread_private.h"
44 _accept(int fd, struct sockaddr * name, socklen_t *namelen)
46 struct pthread *curthread = _get_curthread();
49 /* Lock the file descriptor: */
50 if ((ret = _FD_LOCK(fd, FD_RDWR, NULL)) == 0) {
51 /* Enter a loop to wait for a connection request: */
52 while ((ret = __sys___accept(fd, O_FNONBLOCKING, name, namelen)) < 0) {
53 /* Check if the socket is to block: */
54 if ((_thread_fd_getflags(fd) & O_NONBLOCK) == 0
55 && (errno == EWOULDBLOCK || errno == EAGAIN)) {
56 /* Save the socket file descriptor: */
57 curthread->data.fd.fd = fd;
58 curthread->data.fd.fname = __FILE__;
59 curthread->data.fd.branch = __LINE__;
61 /* Set the timeout: */
62 _thread_kern_set_timeout(NULL);
63 curthread->interrupted = 0;
65 /* Schedule the next thread: */
66 _thread_kern_sched_state(PS_FDR_WAIT, __FILE__, __LINE__);
68 /* Check if the wait was interrupted: */
69 if (curthread->interrupted) {
70 /* Return an error status: */
77 * Another error has occurred, so exit the
84 /* Check for errors: */
87 /* Initialise the file descriptor table for the new socket: */
88 else if (_thread_fd_table_init(ret) != 0) {
89 /* Quietly close the socket: */
92 /* Return an error: */
96 * If the parent socket was blocking, make sure that
97 * the new socket is also set blocking here (as the
98 * call to _thread_fd_table_init() above will always
99 * set the new socket flags to non-blocking, as that
100 * will be the inherited state of the new socket.
102 if((ret > 0) && (_thread_fd_getflags(fd) & O_NONBLOCK) == 0)
103 _thread_fd_setflags(ret,
104 _thread_fd_getflags(ret) & ~O_NONBLOCK);
105 /* Unlock the file descriptor: */
106 _FD_UNLOCK(fd, FD_RDWR);
108 /* Return the socket file descriptor or -1 on error: */
113 accept(int fd, struct sockaddr * name, socklen_t *namelen)
117 _thread_enter_cancellation_point();
118 ret = _accept(fd, name, namelen);
119 _thread_leave_cancellation_point();