1 /* $OpenBSD: w_fcntl.c,v 1.1 2016/05/07 19:05:22 guenther Exp $ */
2 /*
3 * Copyright (c) 2015 Philip Guenther <guenther@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #include <fcntl.h>
19 #include <stdarg.h>
20 #include "cancel.h"
21
22 int
fcntl(int fd,int cmd,...)23 fcntl(int fd, int cmd, ...)
24 {
25 va_list ap;
26 int ret;
27
28 va_start(ap, cmd);
29 switch (cmd) {
30 case F_DUPFD:
31 case F_DUPFD_CLOEXEC:
32 case F_SETFD:
33 case F_SETFL:
34 case F_SETOWN:
35 ret = HIDDEN(fcntl)(fd, cmd, va_arg(ap, int));
36 break;
37 case F_GETFD:
38 case F_GETFL:
39 case F_GETOWN:
40 case F_ISATTY:
41 ret = HIDDEN(fcntl)(fd, cmd);
42 break;
43 case F_GETLK:
44 case F_SETLK:
45 ret = HIDDEN(fcntl)(fd, cmd, va_arg(ap, struct flock *));
46 break;
47 case F_SETLKW:
48 ENTER_CANCEL_POINT(1);
49 ret = HIDDEN(fcntl)(fd, cmd, va_arg(ap, struct flock *));
50 LEAVE_CANCEL_POINT(ret == -1);
51 break;
52 default: /* should never happen? */
53 ret = HIDDEN(fcntl)(fd, cmd, va_arg(ap, void *));
54 break;
55 }
56 va_end(ap);
57 return (ret);
58 }
59 DEF_CANCEL(fcntl);
60