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