Subversion Repositories openrisc

/* Copyright 2002, Red Hat Inc. */

#include <mqueue.h>

#include <errno.h>

#include <sys/sem.h>

#define _LIBC 1

#include <sys/lock.h>

#undef _LIBC

#include "mqlocal.h"

int

mq_close (mqd_t msgid)

{

  struct libc_mq *info;

  struct sembuf sb0 = {0, -1, 0};

  int rc;

  int semid;

  info = __find_mq (msgid);

  if (info == NULL)

    {

      errno = EBADF;

      return -1;

    }

  /* lock message queue */

  semid = info->semid;

  rc = semop (semid, &sb0, 1);

  if (rc == 0)

    {

      __cleanup_mq (msgid);

      /* unlock message queue */

      sb0.sem_op = 1;

      semop (semid, &sb0, 1);

    }

  return rc;

}