nptl/sem_unlink.c

   1 /* Copyright (C) 2002-2020 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <semaphore.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <unistd.h>
  24 #include "semaphoreP.h"
  25 #include <shm-directory.h>
  26
  27 int
  28 sem_unlink (const char *name)
  29 {
  30   /* Construct the filename.  */
  31   SHM_GET_NAME (ENOENT, -1, SEM_SHM_PREFIX);
  32
  33   /* Now try removing it.  */
  34   int ret = unlink (shm_name);
  35   if (ret < 0 && errno == EPERM)
  36     __set_errno (EACCES);
  37   return ret;
  38 }