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#include <sys/sem.h>
#include <stdarg.h>
#include "syscall.h"
#include "ipc.h"
union semun {
int val;
struct semid_ds *buf;
unsigned short *array;
};
int semctl(int id, int num, int cmd, ...)
{
union semun arg;
va_list ap;
va_start(ap, cmd);
arg = va_arg(ap, union semun);
va_end(ap);
#ifdef SYS_semctl
return syscall(SYS_semctl, id, num, cmd | IPC_64, arg.buf);
#else
return syscall(SYS_ipc, IPCOP_semctl, id, num, cmd | IPC_64, &arg.buf);
#endif
}
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