1 /* Create a pipe, with specific opening flags.
2 Copyright (C) 2009 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program 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
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License along
15 with this program; if not, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
26 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
27 /* Native Woe32 API. */
41 pipe2 (int fd[2], int flags)
43 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
44 /* Native Woe32 API. */
46 /* Check the supported flags. */
47 if ((flags & ~(O_CLOEXEC | O_BINARY | O_TEXT)) != 0)
53 return _pipe (fd, 4096, flags);
58 /* Check the supported flags. */
59 if ((flags & ~(O_CLOEXEC | O_NONBLOCK | O_TEXT | O_BINARY)) != 0)
68 /* POSIX <http://www.opengroup.org/onlinepubs/9699919799/functions/pipe.html>
69 says that initially, the O_NONBLOCK and FD_CLOEXEC flags are cleared on
70 both fd[0] amd fd[1]. */
72 if (flags & O_NONBLOCK)
76 if ((fcntl_flags = fcntl (fd[1], F_GETFL, 0)) < 0
77 || fcntl (fd[1], F_SETFL, fcntl_flags | O_NONBLOCK) == -1
78 || (fcntl_flags = fcntl (fd[0], F_GETFL, 0)) < 0
79 || fcntl (fd[0], F_SETFL, fcntl_flags | O_NONBLOCK) == -1)
83 if (flags & O_CLOEXEC)
87 if ((fcntl_flags = fcntl (fd[1], F_GETFD, 0)) < 0
88 || fcntl (fd[1], F_SETFD, fcntl_flags | FD_CLOEXEC) == -1
89 || (fcntl_flags = fcntl (fd[0], F_GETFD, 0)) < 0
90 || fcntl (fd[0], F_SETFD, fcntl_flags | FD_CLOEXEC) == -1)
97 setmode (fd[1], O_BINARY);
98 setmode (fd[0], O_BINARY);
100 else if (flags & O_TEXT)
102 setmode (fd[1], O_TEXT);
103 setmode (fd[0], O_TEXT);
111 int saved_errno = errno;