xref: /freebsd/lib/libc/sys/accept4.c (revision 43faedc1339a9624c7acedb7f3e5624e64da5b99)
1  /*
2   * Copyright (c) 2014 The FreeBSD Foundation.
3   * All rights reserved.
4   *
5   * Portions of this software were developed by Konstantin Belousov
6   * under sponsorship from the FreeBSD Foundation.
7   *
8   * Redistribution and use in source and binary forms, with or without
9   * modification, are permitted provided that the following conditions
10   * are met:
11   * 1. Redistributions of source code must retain the above copyright
12   *    notice(s), this list of conditions and the following disclaimer as
13   *    the first lines of this file unmodified other than the possible
14   *    addition of one or more copyright notices.
15   * 2. Redistributions in binary form must reproduce the above copyright
16   *    notice(s), this list of conditions and the following disclaimer in
17   *    the documentation and/or other materials provided with the
18   *    distribution.
19   *
20   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
21   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
24   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
27   * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
29   * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30   * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31   */
32  
33  #include <sys/cdefs.h>
34  __FBSDID("$FreeBSD$");
35  
36  #include <sys/types.h>
37  #include <sys/syscall.h>
38  #include <sys/socket.h>
39  #include "libc_private.h"
40  
41  __weak_reference(__sys_accept4, __accept4);
42  
43  #pragma weak accept4
44  int
45  accept4(int s, struct sockaddr *addr, socklen_t *addrlen, int flags)
46  {
47  
48  	return (((int (*)(int, struct sockaddr *, socklen_t *, int))
49  	    __libc_interposing[INTERPOS_accept4])(s, addr, addrlen, flags));
50  }
51