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1999-10-27 Andreas Jaeger <aj@suse.de> * sysdeps/generic/ifreq.h: New file. * resolv/res_hconf.c: Add missing includes to get all prototypes. (_res_hconf_reorder_addrs): Rewrite. This never worked before. Reported by John DiMarco <jdd@cs.toronto.edu>. (_res_hconf_reorder_addrs): Made thread safe. (free_mem): New function, needed for malloc debugging. 1999-10-29 Andreas Jaeger <aj@suse.de> * sysdeps/unix/sysv/linux/if_index.c (opensock): Move function to ... * sysdeps/generic/opensock.c (__opensock): ...here in a new file. * sysdeps/unix/sysv/linux/if_index.c: Change all callers of opensock to use __opensock. * socket/Makefile (routines): Add opensock. * include/sys/socket.h (__opensock): Add prototype declaration.
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/* Copyright (C) 1999 Free Software Foundation, Inc.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <stdio.h>
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#include <sys/socket.h>
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#include <bits/libc-lock.h>
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/* Return a socket of any type. The socket can be used in subsequent
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ioctl calls to talk to the kernel. */
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int internal_function
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__opensock (void)
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{
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/* Cache the last AF that worked, to avoid many redundant calls to
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socket(). */
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static int sock_af = -1;
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int fd = -1;
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__libc_lock_define_initialized (static, lock);
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if (sock_af != -1)
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{
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fd = __socket (sock_af, SOCK_DGRAM, 0);
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if (fd != -1)
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return fd;
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}
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__libc_lock_lock (lock);
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if (sock_af != -1)
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fd = __socket (sock_af, SOCK_DGRAM, 0);
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if (fd == -1)
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{
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#ifdef AF_INET
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fd = __socket (sock_af = AF_INET, SOCK_DGRAM, 0);
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#endif
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#ifdef AF_INET6
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if (fd < 0)
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fd = __socket (sock_af = AF_INET6, SOCK_DGRAM, 0);
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#endif
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#ifdef AF_IPX
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if (fd < 0)
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fd = __socket (sock_af = AF_IPX, SOCK_DGRAM, 0);
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#endif
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#ifdef AF_AX25
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if (fd < 0)
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fd = __socket (sock_af = AF_AX25, SOCK_DGRAM, 0);
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#endif
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#ifdef AF_APPLETALK
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if (fd < 0)
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fd = __socket (sock_af = AF_APPLETALK, SOCK_DGRAM, 0);
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#endif
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}
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__libc_lock_unlock (lock);
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return fd;
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}
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