1 /* Copyright (C) 1992,93,94,95,96,99,2000,2002 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, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 #include <sys/socket.h>
24 /* Create a one-way communication channel (pipe).
25 Actually the channel is two-way on the Hurd.
26 If successful, two file descriptors are stored in FDS;
27 bytes written on FDS[1] can be read from FDS[0].
28 Returns 0 if successful, -1 if not. */
32 int save_errno
= errno
;
35 /* The magic S_IFIFO protocol tells the pflocal server to create
36 sockets which report themselves as FIFOs, as POSIX requires for
38 result
= __socketpair (PF_LOCAL
, SOCK_STREAM
, S_IFIFO
, fds
);
39 if (result
== -1 && errno
== EPROTONOSUPPORT
)
41 /* We contacted an "old" pflocal server that doesn't support the
42 magic S_IFIFO protocol.
43 FIXME: Remove this junk somewhere in the future. */
44 __set_errno (save_errno
);
45 return __socketpair (PF_LOCAL
, SOCK_STREAM
, 0, fds
);
50 libc_hidden_def (__pipe
)
51 weak_alias (__pipe
, pipe
)