]>
Commit | Line | Data |
---|---|---|
f720d3d2 | 1 | /* Copyright (C) 1999 Free Software Foundation, Inc. |
41bdb6e2 | 2 | This file is part of the GNU C Library. |
f720d3d2 UD |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
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. | |
f720d3d2 UD |
8 | |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
f720d3d2 | 13 | |
41bdb6e2 AJ |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, write to the Free | |
16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | 02111-1307 USA. */ | |
f720d3d2 UD |
18 | |
19 | #include <stdio.h> | |
20 | #include <sys/socket.h> | |
21 | #include <bits/libc-lock.h> | |
22 | ||
23 | /* Return a socket of any type. The socket can be used in subsequent | |
24 | ioctl calls to talk to the kernel. */ | |
25 | int internal_function | |
26 | __opensock (void) | |
27 | { | |
28 | /* Cache the last AF that worked, to avoid many redundant calls to | |
29 | socket(). */ | |
30 | static int sock_af = -1; | |
31 | int fd = -1; | |
32 | __libc_lock_define_initialized (static, lock); | |
33 | ||
34 | if (sock_af != -1) | |
35 | { | |
36 | fd = __socket (sock_af, SOCK_DGRAM, 0); | |
37 | if (fd != -1) | |
38 | return fd; | |
39 | } | |
40 | ||
41 | __libc_lock_lock (lock); | |
42 | ||
43 | if (sock_af != -1) | |
44 | fd = __socket (sock_af, SOCK_DGRAM, 0); | |
45 | ||
46 | if (fd == -1) | |
47 | { | |
48 | #ifdef AF_INET | |
49 | fd = __socket (sock_af = AF_INET, SOCK_DGRAM, 0); | |
50 | #endif | |
51 | #ifdef AF_INET6 | |
52 | if (fd < 0) | |
53 | fd = __socket (sock_af = AF_INET6, SOCK_DGRAM, 0); | |
54 | #endif | |
55 | #ifdef AF_IPX | |
56 | if (fd < 0) | |
57 | fd = __socket (sock_af = AF_IPX, SOCK_DGRAM, 0); | |
58 | #endif | |
59 | #ifdef AF_AX25 | |
60 | if (fd < 0) | |
61 | fd = __socket (sock_af = AF_AX25, SOCK_DGRAM, 0); | |
62 | #endif | |
63 | #ifdef AF_APPLETALK | |
64 | if (fd < 0) | |
65 | fd = __socket (sock_af = AF_APPLETALK, SOCK_DGRAM, 0); | |
66 | #endif | |
67 | } | |
68 | ||
69 | __libc_lock_unlock (lock); | |
70 | return fd; | |
71 | } |