1 #include <sys/types.h> 2 #include <sys/ipc.h> 3 #include <sys/sem.h> 4 #if __STDC__ 5 #include <stdarg.h> 6 #else 7 #include <varargs.h> 8 #endif 9 #include <stdlib.h> 10 11 #if __STDC__ 12 int semctl(int semid, int semnum, int cmd, ...) 13 #else 14 int semctl(semid, semnum, cmd, va_alist) 15 int semid, semnum; 16 int cmd; 17 va_dcl 18 #endif 19 { 20 va_list ap; 21 union semun semun; 22 union semun *semun_ptr; 23 #if __STDC__ 24 va_start(ap, cmd); 25 #else 26 va_start(ap); 27 #endif 28 if (cmd == IPC_SET || cmd == IPC_STAT || cmd == GETALL 29 || cmd == SETVAL || cmd == SETALL) { 30 semun = va_arg(ap, union semun); 31 semun_ptr = &semun; 32 } else { 33 semun_ptr = NULL; 34 } 35 va_end(ap); 36 37 #ifdef __NETBSD_SYSCALLS 38 return (__semctl(semid, semnum, cmd, semun_ptr)); 39 #else 40 return (semsys(0, semid, semnum, cmd, semun_ptr)); 41 #endif 42 } 43