sysdeps/posix/shm-directory.c

   1 /* Determine directory for shm/sem files.  Generic POSIX version.
   2    Copyright (C) 2014-2015 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include "shm-directory.h"
  20 #include <unistd.h>
  21
  22 #if _POSIX_MAPPED_FILES
  23
  24 # include <paths.h>
  25
  26 # define SHMDIR (_PATH_DEV "shm/")
  27
  28 const char *
  29 __shm_directory (size_t *len)
  30 {
  31   *len = sizeof SHMDIR - 1;
  32   return SHMDIR;
  33 }
  34 # if IS_IN (libpthread)
  35 hidden_def (__shm_directory)
  36 # endif
  37
  38 #endif