source/texk/kpathsea/xstat.h

   1 /* xstat.h: stat with error checking.
   2
   3    Copyright 1992, 1993, 1994, 2008, 2010, 2011 Karl Berry.
   4
   5    This 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    This 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 License
  16    along with this library; if not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef KPATHSEA_XSTAT_H
  19 #define KPATHSEA_XSTAT_H
  20
  21 #ifdef MAKE_KPSE_DLL /* libkpathsea internal only */
  22
  23 #include <kpathsea/c-proto.h>
  24 #include <kpathsea/c-stat.h>
  25 #include <kpathsea/types.h>
  26
  27 /* Two files are indistinguishable if they are on the same device
  28    and have the same inode.  This checks two stat buffers for that.  Cf.
  29    the `same_file_p' routine in file-p.c, declared in kpathlib.h.  */
  30 #define SAME_FILE_P(s1, s2) \
  31   ((s1).st_ino == (s2).st_ino && (s1).st_dev == (s2).st_dev)
  32
  33 /* Does stat(2) on PATH, and aborts if the stat fails.  */
  34 extern struct stat xstat (const_string path);
  35
  36 /* Ditto, for lstat(2) (except that lstat might not exist).  */
  37 #ifdef S_ISLNK
  38 extern struct stat xlstat (const_string path);
  39 #else
  40 #define xlstat xstat
  41 #endif
  42
  43 #endif /* MAKE_KPSE_DLL */
  44
  45 #endif /* not KPATHSEA_XSTAT_H */