1/*
2 * Copyright (c) 1995-1998 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
32#include "namespace.h"
33#include <unistd.h>
34#include <errno.h>
35#include <poll.h>
36#include <stdlib.h>
37#include <string.h>
38#include <sys/param.h>
39#include <sys/types.h>
40#include <sys/time.h>
41#include <sys/fcntl.h>
42#include <pthread.h>
43#include "un-namespace.h"
44#include "thr_private.h"
45
46int	__select(int numfds, fd_set *readfds, fd_set *writefds,
47	    fd_set *exceptfds, struct timeval *timeout);
48
49__weak_reference(__select, select);
50
51int
52__select(int numfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
53	struct timeval *timeout)
54{
55	struct pthread *curthread = _get_curthread();
56	struct timespec ts;
57	int ret;
58
59	if (numfds == 0 && timeout != NULL) {
60		TIMEVAL_TO_TIMESPEC(timeout, &ts);
61		ret = _nanosleep(&ts, NULL);
62	} else {
63		_thr_cancel_enter(curthread);
64		ret = __sys_select(numfds, readfds, writefds, exceptfds, timeout);
65		_thr_cancel_leave(curthread, 1);
66	}
67	return (ret);
68}
69