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
60
61
62
63
64
65
66
67
|
/* Bounded-pointer checking macros for C.
Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Greg McGary <greg@mcgary.org>
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#ifndef _bp_semctl_h_
#define _bp_semctl_h_ 1
#if __BOUNDED_POINTERS__
# define CHECK_SEMCTL(ARGP, SEMID, CMD) check_semctl (ARGP, SEMID, CMD)
union semun *__unbounded
check_semctl (union semun *arg, int semid, int cmd)
{
int ipc64 = (cmd & __IPC_64);
switch (cmd & ~__IPC_64)
{
case IPC_STAT:
case IPC_SET:
(void) CHECK_1 (arg->buf);
break;
case GETALL:
case SETALL:
{
struct semid_ds ds;
union semun un = { buf: &ds };
unsigned int length = ~0;
/* It's unfortunate that we need to make a recursive
system call to get the size of the semaphore set... */
if (semctl (semid, 0, IPC_STAT | ipc64, un) == 0)
length = ds.sem_nsems;
(void) CHECK_N (arg->array, length);
break;
}
case IPC_INFO:
(void) CHECK_1 (arg->__buf);
break;
}
return __ptrvalue (arg);
}
#else
# define CHECK_SEMCTL(ARGP, SEMID, CMD) (ARGP)
#endif
#endif /* _bp_semctl_h_ */
|
