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- /* 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 <errno.h>
- #include <sys/sem.h>
- #include "ipc.h"
- #ifdef L_semctl
- /* Return identifier for array of NSEMS semaphores associated with
- KEY. */
- #include <stdarg.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 */
- };
- int
- 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 __ipc(IPCOP_semctl, semid, semnum, cmd, &arg);
- }
- #endif
- #ifdef L_semget
- #include <stdlib.h> /* for definition of NULL */
- /* Return identifier for array of NSEMS semaphores associated with
- KEY. */
- int
- semget (key, nsems, semflg)
- key_t key;
- int nsems;
- int semflg;
- {
- return __ipc(IPCOP_semget, key, nsems, semflg, NULL);
- }
- #endif
- #ifdef L_semop
- /* Perform user-defined atomical operation of array of semaphores. */
- int
- semop (semid, sops, nsops)
- int semid;
- struct sembuf *sops;
- size_t nsops;
- {
- return __ipc(IPCOP_semop, semid, (int) nsops, 0, sops);
- }
- #endif
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