src/system/libroot/posix/sys/xsi_sem.cpp

   1 /*
   2  * Copyright 2008, Haiku Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Salvatore Benedetto <salvatore.benedetto@gmail.com>
   7  */
   8
   9 #include <sys/sem.h>
  10
  11 #include <errno.h>
  12 #include <fcntl.h>
  13 #include <stdarg.h>
  14 #include <stdlib.h>
  15
  16 #include <OS.h>
  17
  18 #include <errno_private.h>
  19 #include <posix/xsi_semaphore_defs.h>
  20 #include <syscall_utils.h>
  21 #include <syscalls.h>
  22
  23
  24 int
  25 semget(key_t key, int numSems, int semFlags)
  26 {
  27         RETURN_AND_SET_ERRNO(_kern_xsi_semget(key, numSems, semFlags));
  28 }
  29
  30
  31 int
  32 semctl(int semID, int semNum, int command, ...)
  33 {
  34         union semun arg;
  35         va_list args;
  36
  37         switch (command) {
  38                 case GETVAL:
  39                 case GETPID:
  40                 case GETNCNT:
  41                 case GETZCNT:
  42                 case IPC_RMID:
  43                         RETURN_AND_SET_ERRNO(_kern_xsi_semctl(semID, semNum, command, 0));
  44
  45                 case SETVAL:
  46                 case GETALL:
  47                 case SETALL:
  48                 case IPC_STAT:
  49                 case IPC_SET:
  50                         va_start(args, command);
  51                         arg = va_arg(args, union semun);
  52                         va_end(args);
  53                         RETURN_AND_SET_ERRNO(_kern_xsi_semctl(semID, semNum, command,
  54                                 &arg));
  55
  56                 default:
  57                         return EINVAL;
  58         }
  59 }
  60
  61
  62 int
  63 semop(int semID, struct sembuf *semOps, size_t numSemOps)
  64 {
  65         RETURN_AND_SET_ERRNO(_kern_xsi_semop(semID, semOps, numSemOps));
  66 }