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* 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.
This commit is contained in:
Ulrich Drepper
1998-04-28 22:51:34 +00:00
parent 936e9dafaa
commit 8be1539f4d
3 changed files with 30 additions and 13 deletions
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31
sysdeps/unix/sysv/linux/semctl.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1995, 1997 Free Software Foundation, Inc.
/* 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.
@ -17,17 +17,34 @@
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 (semid, semnum, cmd, arg)
int semid;
int semnum;
int cmd;
union semun arg;
semctl (int semid, int semnum, int cmd, ...)
{
return __ipc (IPCOP_semctl, semid, semnum, cmd, &arg);
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);
}