nptl/sem_unlink.c


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/* Copyright (C) 2002-2019 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <semaphore.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "semaphoreP.h"
#include <shm-directory.h>

int
sem_unlink (const char *name)
{
  /* Construct the filename.  */
  SHM_GET_NAME (ENOENT, -1, SEM_SHM_PREFIX);

  /* Now try removing it.  */
  int ret = unlink (shm_name);
  if (ret < 0 && errno == EPERM)
    __set_errno (EACCES);
  return ret;
}