1 /* Copyright (C) 1999-2013 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
19 #include <sys/socket.h>
20 #include <bits/libc-lock.h>
22 /* Return a socket of any type. The socket can be used in subsequent
23 ioctl calls to talk to the kernel. */
27 /* Cache the last AF that worked, to avoid many redundant calls to
29 static int sock_af = -1;
31 __libc_lock_define_initialized (static, lock);
35 fd = __socket (sock_af, SOCK_DGRAM, 0);
40 __libc_lock_lock (lock);
43 fd = __socket (sock_af, SOCK_DGRAM, 0);
48 fd = __socket (sock_af = AF_INET, SOCK_DGRAM, 0);
52 fd = __socket (sock_af = AF_INET6, SOCK_DGRAM, 0);
56 fd = __socket (sock_af = AF_IPX, SOCK_DGRAM, 0);
60 fd = __socket (sock_af = AF_AX25, SOCK_DGRAM, 0);
64 fd = __socket (sock_af = AF_APPLETALK, SOCK_DGRAM, 0);
68 __libc_lock_unlock (lock);