mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-11 05:40:06 +00:00
98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/* Copyright (C) 1995-2014 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
|
|
|
|
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, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <stdarg.h>
|
|
#include <sys/sem.h>
|
|
#include <ipc_priv.h>
|
|
|
|
#include <sysdep.h>
|
|
#include <string.h>
|
|
#include <sys/syscall.h>
|
|
|
|
#include <shlib-compat.h>
|
|
|
|
struct __old_semid_ds
|
|
{
|
|
struct __old_ipc_perm sem_perm; /* operation permission struct */
|
|
__time_t sem_otime; /* last semop() time */
|
|
__time_t sem_ctime; /* last time changed by semctl() */
|
|
struct sem *__sembase; /* ptr to first semaphore in array */
|
|
struct sem_queue *__sem_pending; /* pending operations */
|
|
struct sem_queue *__sem_pending_last; /* last pending operation */
|
|
struct sem_undo *__undo; /* ondo requests on this array */
|
|
unsigned short int sem_nsems; /* number of semaphores in set */
|
|
};
|
|
|
|
/* Define a `union semun' suitable for Linux here. */
|
|
union semun
|
|
{
|
|
int val; /* value for SETVAL */
|
|
struct semid_ds *buf; /* buffer for IPC_STAT & IPC_SET */
|
|
unsigned short int *array; /* array for GETALL & SETALL */
|
|
struct seminfo *__buf; /* buffer for IPC_INFO */
|
|
struct __old_semid_ds *__old_buf;
|
|
};
|
|
|
|
/* Return identifier for array of NSEMS semaphores associated with
|
|
KEY. */
|
|
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
|
|
int __old_semctl (int semid, int semnum, int cmd, ...);
|
|
#endif
|
|
int __new_semctl (int semid, int semnum, int cmd, ...);
|
|
|
|
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
|
|
int
|
|
attribute_compat_text_section
|
|
__old_semctl (int semid, int semnum, int cmd, ...)
|
|
{
|
|
union semun arg;
|
|
va_list ap;
|
|
|
|
va_start (ap, cmd);
|
|
|
|
/* Get the argument. */
|
|
arg = va_arg (ap, union semun);
|
|
|
|
va_end (ap);
|
|
|
|
return INLINE_SYSCALL (ipc, 5, IPCOP_semctl, semid, semnum, cmd,
|
|
&arg);
|
|
}
|
|
compat_symbol (libc, __old_semctl, semctl, GLIBC_2_0);
|
|
#endif
|
|
|
|
int
|
|
__new_semctl (int semid, int semnum, int cmd, ...)
|
|
{
|
|
union semun arg;
|
|
va_list ap;
|
|
|
|
va_start (ap, cmd);
|
|
|
|
/* Get the argument. */
|
|
arg = va_arg (ap, union semun);
|
|
|
|
va_end (ap);
|
|
|
|
return INLINE_SYSCALL (ipc, 5, IPCOP_semctl, semid, semnum, cmd | __IPC_64,
|
|
&arg);
|
|
}
|
|
|
|
versioned_symbol (libc, __new_semctl, semctl, GLIBC_2_2);
|