2000-07-27 14:25:28 +08:00
|
|
|
/* Bounded-pointer checking macros for C.
|
|
|
|
|
Copyright (C) 2000 Free Software Foundation, Inc.
|
2000-09-14 15:30:28 +08:00
|
|
|
This file is part of the GNU C Library.
|
2000-07-27 14:25:28 +08:00
|
|
|
Contributed by Greg McGary <greg@mcgary.org>
|
|
|
|
|
|
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
2001-07-06 12:58:11 +08:00
|
|
|
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.
|
2000-07-27 14:25:28 +08:00
|
|
|
|
|
|
|
|
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
|
2001-07-06 12:58:11 +08:00
|
|
|
Lesser General Public License for more details.
|
2000-07-27 14:25:28 +08:00
|
|
|
|
2001-07-06 12:58:11 +08:00
|
|
|
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. */
|
2000-07-27 14:25:28 +08:00
|
|
|
|
|
|
|
|
#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;
|
2002-12-17 08:06:01 +08:00
|
|
|
union semun un = { .buf = &ds };
|
2000-07-27 14:25:28 +08:00
|
|
|
unsigned int length = ~0;
|
|
|
|
|
|
|
|
|
|
/* It's unfortunate that we need to make a recursive
|
|
|
|
|
system call to get the size of the semaphore set... */
|
2000-07-27 15:28:10 +08:00
|
|
|
if (semctl (semid, 0, IPC_STAT | ipc64, un) == 0)
|
2000-07-27 14:25:28 +08:00
|
|
|
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_ */
|
