tests/test-stat.h

   1 /* Tests of stat.
   2    Copyright (C) 2009-2024 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 #if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
  36   ASSERT (psame_inode (&st1, &st2));
  37 #endif
  38   ASSERT (func (cwd, &st2) == 0);
  39 #if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
  40   ASSERT (psame_inode (&st1, &st2));
  41 #endif
  42   ASSERT (func ("/", &st1) == 0);
  43   ASSERT (func ("///", &st2) == 0);
  44 #if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
  45   ASSERT (psame_inode (&st1, &st2));
  46 #endif
  47
  48   errno = 0;
  49   ASSERT (func ("", &st1) == -1);
  50   ASSERT (errno == ENOENT);
  51   errno = 0;
  52   ASSERT (func ("nosuch", &st1) == -1);
  53   ASSERT (errno == ENOENT);
  54   errno = 0;
  55   ASSERT (func ("nosuch/", &st1) == -1);
  56   ASSERT (errno == ENOENT);
  57
  58   ASSERT (close (creat (BASE "file", 0600)) == 0);
  59   ASSERT (func (BASE "file", &st1) == 0);
  60   errno = 0;
  61   ASSERT (func (BASE "file/", &st1) == -1);
  62   ASSERT (errno == ENOTDIR);
  63
  64   /* Now for some symlink tests, where supported.  We set up:
  65      link1 -> directory
  66      link2 -> file
  67      link3 -> dangling
  68      link4 -> loop
  69      then test behavior with trailing slash.
  70   */
  71   if (symlink (".", BASE "link1") != 0)
  72     {
  73       ASSERT (unlink (BASE "file") == 0);
  74       if (print)
  75         fputs ("skipping test: symlinks not supported on this file system\n",
  76                stderr);
  77       return 77;
  78     }
  79   ASSERT (symlink (BASE "file", BASE "link2") == 0);
  80   ASSERT (symlink (BASE "nosuch", BASE "link3") == 0);
  81   ASSERT (symlink (BASE "link4", BASE "link4") == 0);
  82
  83   ASSERT (func (BASE "link1/", &st1) == 0);
  84   ASSERT (S_ISDIR (st1.st_mode));
  85
  86   errno = 0;
  87   ASSERT (func (BASE "link2/", &st1) == -1);
  88   ASSERT (errno == ENOTDIR);
  89
  90   errno = 0;
  91   ASSERT (func (BASE "link3/", &st1) == -1);
  92   ASSERT (errno == ENOENT);
  93
  94   errno = 0;
  95   ASSERT (func (BASE "link4/", &st1) == -1);
  96   ASSERT (errno == ELOOP);
  97
  98   /* Cleanup.  */
  99   ASSERT (unlink (BASE "file") == 0);
 100   ASSERT (unlink (BASE "link1") == 0);
 101   ASSERT (unlink (BASE "link2") == 0);
 102   ASSERT (unlink (BASE "link3") == 0);
 103   ASSERT (unlink (BASE "link4") == 0);
 104   free (cwd);
 105
 106   return 0;
 107 }