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#include <sys/types.h>
#include <sys/ipc.h>
extern int __ipc(int,int,int,int,void*);
union semun {
int val; /* value for SETVAL */
struct semid_ds *buf; /* buffer for IPC_STAT & IPC_SET */
unsigned short *array; /* array for GETALL & SETALL */
struct seminfo *__buf; /* buffer for IPC_INFO */
void *__pad;
};
int semctl(int semid, int semnum, int cmd, union semun arg);
int semctl(int semid, int semnum, int cmd, union semun arg) {
return __ipc(SEMCTL,semid,semnum,cmd,&arg);
}
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