tests/test-stat.h

   1 /* Tests of stat.
   2    Copyright (C) 2009-2018 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 /* Written by Eric Blake <ebb9@byu.net>, 2009.  */
  18
  19 /* This file is designed to test both stat(n,buf) and
  20    fstatat(AT_FDCWD,n,buf,0).  FUNC is the function to test.  Assumes
  21    that BASE and ASSERT are already defined, and that appropriate
  22    headers are already included.  If PRINT, warn before skipping
  23    symlink tests with status 77.  */
  24
  25 static int
  26 test_stat_func (int (*func) (char const *, struct stat *), bool print)
  27 {
  28   struct stat st1;
  29   struct stat st2;
  30   char *cwd = getcwd (NULL, 0);
  31
  32   ASSERT (cwd);
  33   ASSERT (func (".", &st1) == 0);
  34   ASSERT (func ("./", &st2) == 0);
  35   ASSERT (SAME_INODE (st1, st2));
  36   ASSERT (func (cwd, &st2) == 0);
  37   ASSERT (SAME_INODE (st1, st2));
  38   ASSERT (func ("/", &st1) == 0);
  39   ASSERT (func ("///", &st2) == 0);
  40   ASSERT (SAME_INODE (st1, st2));
  41
  42   errno = 0;
  43   ASSERT (func ("", &st1) == -1);
  44   ASSERT (errno == ENOENT);
  45   errno = 0;
  46   ASSERT (func ("nosuch", &st1) == -1);
  47   ASSERT (errno == ENOENT);
  48   errno = 0;
  49   ASSERT (func ("nosuch/", &st1) == -1);
  50   ASSERT (errno == ENOENT);
  51
  52   ASSERT (close (creat (BASE "file", 0600)) == 0);
  53   ASSERT (func (BASE "file", &st1) == 0);
  54   errno = 0;
  55   ASSERT (func (BASE "file/", &st1) == -1);
  56   ASSERT (errno == ENOTDIR);
  57
  58   /* Now for some symlink tests, where supported.  We set up:
  59      link1 -> directory
  60      link2 -> file
  61      link3 -> dangling
  62      link4 -> loop
  63      then test behavior with trailing slash.
  64   */
  65   if (symlink (".", BASE "link1") != 0)
  66     {
  67       ASSERT (unlink (BASE "file") == 0);
  68       if (print)
  69         fputs ("skipping test: symlinks not supported on this file system\n",
  70                stderr);
  71       return 77;
  72     }
  73   ASSERT (symlink (BASE "file", BASE "link2") == 0);
  74   ASSERT (symlink (BASE "nosuch", BASE "link3") == 0);
  75   ASSERT (symlink (BASE "link4", BASE "link4") == 0);
  76
  77   ASSERT (func (BASE "link1/", &st1) == 0);
  78   ASSERT (S_ISDIR (st1.st_mode));
  79
  80   errno = 0;
  81   ASSERT (func (BASE "link2/", &st1) == -1);
  82   ASSERT (errno == ENOTDIR);
  83
  84   errno = 0;
  85   ASSERT (func (BASE "link3/", &st1) == -1);
  86   ASSERT (errno == ENOENT);
  87
  88   errno = 0;
  89   ASSERT (func (BASE "link4/", &st1) == -1);
  90   ASSERT (errno == ELOOP);
  91
  92   /* Cleanup.  */
  93   ASSERT (unlink (BASE "file") == 0);
  94   ASSERT (unlink (BASE "link1") == 0);
  95   ASSERT (unlink (BASE "link2") == 0);
  96   ASSERT (unlink (BASE "link3") == 0);
  97   ASSERT (unlink (BASE "link4") == 0);
  98   free (cwd);
  99
 100   return 0;
 101 }