mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-19 11:30:06 +00:00
8be1539f4d
* sysdeps/unix/sysv/linux/semctl.c (semctl): Define own union semun and use stdarg macros to get the value. * sysdeps/generic/semctl.c: Don't use union semun.
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/* Copyright (C) 1995, 1997, 1998 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <stdarg.h>
|
|
#include <sys/sem.h>
|
|
|
|
/* 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 */
|
|
};
|
|
|
|
|
|
/* Return identifier for array of NSEMS semaphores associated with
|
|
KEY. */
|
|
|
|
int
|
|
semctl (int semid, int semnum, int cmd, ...)
|
|
{
|
|
union semun *arg;
|
|
va_list ap;
|
|
|
|
va_start (ap, cmd);
|
|
|
|
/* Get a pointer the argument. */
|
|
arg = &va_arg (ap, union semun);
|
|
|
|
va_end (ap);
|
|
|
|
return __ipc (IPCOP_semctl, semid, semnum, cmd, arg);
|
|
}
|