1 /*
2 * poll_posix: poll compatibility wrapper for POSIX systems
3 * Copyright © 2013 RealVNC Ltd.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 *
19 */
20
21 #include <config.h>
22
23 #include <unistd.h>
24 #include <fcntl.h>
25 #include <errno.h>
26 #include <stdlib.h>
27
28 #include "libusbi.h"
29
usbi_pipe(int pipefd[2])30 int usbi_pipe(int pipefd[2])
31 {
32 int ret = pipe(pipefd);
33 if (ret != 0) {
34 return ret;
35 }
36 ret = fcntl(pipefd[1], F_GETFL);
37 if (ret == -1) {
38 usbi_dbg("Failed to get pipe fd flags: %d", errno);
39 goto err_close_pipe;
40 }
41 ret = fcntl(pipefd[1], F_SETFL, ret | O_NONBLOCK);
42 if (ret != 0) {
43 usbi_dbg("Failed to set non-blocking on new pipe: %d", errno);
44 goto err_close_pipe;
45 }
46
47 return 0;
48
49 err_close_pipe:
50 usbi_close(pipefd[0]);
51 usbi_close(pipefd[1]);
52 return ret;
53 }
54