lib/save-cwd.h

   1 /* Do not save and restore the current working directory.
   2
   3    Copyright 2013 Free Software Foundation, Inc.
   4
   5    This program is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program 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
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 /* Gnulib needs to save and restore the current working directory to
  19    fully emulate functions like fstatat.  But Emacs doesn't care what
  20    the current working directory is; it always uses absolute file
  21    names.  This module replaces the Gnulib module by omitting the code
  22    that Emacs does not need.  */
  23
  24 #ifndef SAVE_CWD_H
  25 #define SAVE_CWD_H 1
  26
  27 _GL_INLINE_HEADER_BEGIN
  28 #ifndef SAVE_CWD_INLINE
  29 # define SAVE_CWD_INLINE _GL_INLINE
  30 #endif
  31
  32 struct saved_cwd { int desc; };
  33
  34 SAVE_CWD_INLINE int
  35 save_cwd (struct saved_cwd *cwd)
  36 {
  37   cwd->desc = -1;
  38   return 0;
  39 }
  40
  41 SAVE_CWD_INLINE int restore_cwd (struct saved_cwd const *cwd) { return 0; }
  42 SAVE_CWD_INLINE void free_cwd (struct saved_cwd *cwd) { }
  43
  44 _GL_INLINE_HEADER_END
  45
  46 #endif