root/maint/gnulib/tests/test-lchmod.c

/* */

DEFINITIONS

1. main

   1 /* Test changing the protections of a file.
   2    Copyright (C) 2020-2021 Free Software Foundation, Inc.
   3 
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8 
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13 
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16 
  17 #include <config.h>
  18 
  19 #include <sys/stat.h>
  20 
  21 #include "signature.h"
  22 SIGNATURE_CHECK (lchmod, int, (const char *, mode_t));
  23 
  24 #include <errno.h>
  25 #include <fcntl.h>
  26 #include <sys/stat.h>
  27 #include <unistd.h>
  28 
  29 #include "macros.h"
  30 
  31 #define BASE "test-lchmod."
  32 
  33 int
  34 main (void)
     /*  */
  35 {
  36   /* Test that lchmod works on regular files.  */
  37   {
  38     struct stat statbuf;
  39     unlink (BASE "file");
  40     ASSERT (close (creat (BASE "file", 0600)) == 0);
  41     ASSERT (lchmod (BASE "file", 0400) == 0);
  42     ASSERT (stat (BASE "file", &statbuf) >= 0);
  43     ASSERT ((statbuf.st_mode & 0700) == 0400);
  44 
  45     errno = 0;
  46     ASSERT (lchmod (BASE "file/", 0600) == -1);
  47     ASSERT (errno == ENOTDIR);
  48 
  49     /* Clean up.  */
  50     ASSERT (chmod (BASE "file", 0600) == 0);
  51     ASSERT (unlink (BASE "file") == 0);
  52   }
  53 
  54   /* Test that lchmod works on directories.  */
  55   {
  56     struct stat statbuf;
  57 
  58     rmdir (BASE "dir");
  59     ASSERT (mkdir (BASE "dir", 0700) == 0);
  60     ASSERT (lchmod (BASE "dir", 0500) == 0);
  61     ASSERT (stat (BASE "dir", &statbuf) >= 0);
  62     ASSERT ((statbuf.st_mode & 0700) == 0500);
  63     ASSERT (lchmod (BASE "dir/", 0700) == 0);
  64 
  65     /* Clean up.  */
  66     ASSERT (rmdir (BASE "dir") == 0);
  67   }
  68 
  69   /* Test that lchmod on symlinks does not modify the symlink target.  */
  70   {
  71     unlink (BASE "file");
  72     unlink (BASE "link");
  73     if (symlink (BASE "file", BASE "link") == 0)
  74       {
  75         struct stat statbuf;
  76         ASSERT (close (creat (BASE "file", 0600)) == 0);
  77         lchmod (BASE "link", 0400);
  78         ASSERT (stat (BASE "file", &statbuf) >= 0);
  79         ASSERT ((statbuf.st_mode & 0700) == 0600);
  80       }
  81     /* Clean up.  */
  82     unlink (BASE "file");
  83     unlink (BASE "link");
  84   }
  85 
  86   return 0;
  87 }

/* */