lib/chmod.c

   1 /* Implement chmod on platforms where it does not work correctly.
   2
   3    Copyright 2022-2024 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 <https://www.gnu.org/licenses/>.  */
  17
  18 #include <config.h>
  19
  20 /* Specification.  */
  21 #include <sys/stat.h>
  22
  23 #include <errno.h>
  24 #include <string.h>
  25
  26 int
  27 rpl_chmod (const char *filename, mode_t mode)
  28 #undef chmod
  29 #if defined _WIN32 && !defined __CYGWIN__
  30 # define chmod _chmod
  31 #endif
  32 {
  33   size_t len = strlen (filename);
  34   if (len > 0 && filename[len - 1] == '/')
  35     {
  36       struct stat st;
  37       if (lstat (filename, &st) < 0)
  38         return -1;
  39       if (!S_ISDIR (st.st_mode))
  40         {
  41           errno = ENOTDIR;
  42           return -1;
  43         }
  44     }
  45
  46   return chmod (filename, mode);
  47 }