1 /*
2 * SPDX-License-Identifier: ISC
3 *
4 * Copyright (c) 2017 Todd C. Miller <Todd.Miller@sudo.ws>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 /*
20 * This is an open source non-commercial project. Dear PVS-Studio, please check it.
21 * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
22 */
23
24 #include <config.h>
25
26 #ifndef HAVE_PIPE2
27
28 #include <fcntl.h>
29 #include <unistd.h>
30
31 #include "sudo_compat.h"
32
33 int
sudo_pipe2(int fildes[2],int flags)34 sudo_pipe2(int fildes[2], int flags)
35 {
36 if (pipe(fildes) != 0)
37 return -1;
38
39 if (ISSET(flags, O_CLOEXEC)) {
40 if (fcntl(fildes[0], F_SETFD, FD_CLOEXEC) == -1)
41 goto bad;
42 if (fcntl(fildes[1], F_SETFD, FD_CLOEXEC) == -1)
43 goto bad;
44 }
45 if (ISSET(flags, O_NONBLOCK)) {
46 int oflags = fcntl(fildes[0], F_GETFL, 0);
47 if (oflags == -1)
48 goto bad;
49 if (fcntl(fildes[0], F_SETFL, oflags | O_NONBLOCK) == -1)
50 goto bad;
51 oflags = fcntl(fildes[1], F_GETFL, 0);
52 if (oflags == -1)
53 goto bad;
54 if (fcntl(fildes[1], F_SETFL, oflags | O_NONBLOCK) == -1)
55 goto bad;
56 }
57 return 0;
58 bad:
59 close(fildes[0]);
60 close(fildes[1]);
61 return -1;
62 }
63
64 #endif /* HAVE_PIPE2 */
65