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. 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.
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
33 #include <sys/types.h>
34 #include <sys/socket.h>
37 #include "pthread_private.h"
39 __weak_reference(__accept, accept);
42 _accept(int fd, struct sockaddr * name, socklen_t *namelen)
44 struct pthread *curthread = _get_curthread();
47 /* Lock the file descriptor: */
48 if ((ret = _FD_LOCK(fd, FD_RDWR, NULL)) == 0) {
49 /* Enter a loop to wait for a connection request: */
50 while ((ret = __sys_accept(fd, name, namelen)) < 0) {
51 /* Check if the socket is to block: */
52 if ((_thread_fd_getflags(fd) & O_NONBLOCK) == 0
53 && (errno == EWOULDBLOCK || errno == EAGAIN)) {
54 /* Save the socket file descriptor: */
55 curthread->data.fd.fd = fd;
56 curthread->data.fd.fname = __FILE__;
57 curthread->data.fd.branch = __LINE__;
59 /* Set the timeout: */
60 _thread_kern_set_timeout(NULL);
61 curthread->interrupted = 0;
63 /* Schedule the next thread: */
64 _thread_kern_sched_state(PS_FDR_WAIT, __FILE__, __LINE__);
66 /* Check if the wait was interrupted: */
67 if (curthread->interrupted) {
68 /* Return an error status: */
75 * Another error has occurred, so exit the
82 /* Check for errors: */
85 /* Initialise the file descriptor table for the new socket: */
86 else if (_thread_fd_table_init(ret) != 0) {
87 /* Quietly close the socket: */
90 /* Return an error: */
94 * If the parent socket was blocking, make sure that
95 * the new socket is also set blocking here (as the
96 * call to _thread_fd_table_init() above will always
97 * set the new socket flags to non-blocking, as that
98 * will be the inherited state of the new socket.
100 if((ret > 0) && (_thread_fd_getflags(fd) & O_NONBLOCK) == 0)
101 _thread_fd_setflags(ret,
102 _thread_fd_getflags(ret) & ~O_NONBLOCK);
103 /* Unlock the file descriptor: */
104 _FD_UNLOCK(fd, FD_RDWR);
106 /* Return the socket file descriptor or -1 on error: */
111 __accept(int fd, struct sockaddr * name, socklen_t *namelen)
115 _thread_enter_cancellation_point();
116 ret = _accept(fd, name, namelen);
117 _thread_leave_cancellation_point();