Line data    Source code

       1             : /* Test of lstat() function.
       2             :    Copyright (C) 2008-2020 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 Simon Josefsson, 2008; and Eric Blake, 2009.  */
      18             : 
      19             : /* This file is designed to test both lstat(n,buf) and
      20             :    fstatat(AT_FDCWD,n,buf,AT_SYMLINK_NOFOLLOW).  FUNC is the function
      21             :    to test.  Assumes that BASE and ASSERT are already defined, and
      22             :    that appropriate headers are already included.  If PRINT, warn
      23             :    before skipping symlink tests with status 77.  */
      24             : 
      25             : static int
      26           1 : test_lstat_func (int (*func) (char const *, struct stat *), bool print)
      27             : {
      28             :   struct stat st1;
      29             :   struct stat st2;
      30             : 
      31             :   /* Test for common directories.  */
      32           1 :   ASSERT (func (".", &st1) == 0);
      33           1 :   ASSERT (func ("./", &st2) == 0);
      34             : #if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
      35           1 :   ASSERT (SAME_INODE (st1, st2));
      36             : #endif
      37           1 :   ASSERT (S_ISDIR (st1.st_mode));
      38           1 :   ASSERT (S_ISDIR (st2.st_mode));
      39           1 :   ASSERT (func ("/", &st1) == 0);
      40           1 :   ASSERT (func ("///", &st2) == 0);
      41             : #if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
      42           1 :   ASSERT (SAME_INODE (st1, st2));
      43             : #endif
      44           1 :   ASSERT (S_ISDIR (st1.st_mode));
      45           1 :   ASSERT (S_ISDIR (st2.st_mode));
      46           1 :   ASSERT (func ("..", &st1) == 0);
      47           1 :   ASSERT (S_ISDIR (st1.st_mode));
      48             : 
      49             :   /* Test for error conditions.  */
      50           1 :   errno = 0;
      51           1 :   ASSERT (func ("", &st1) == -1);
      52           1 :   ASSERT (errno == ENOENT);
      53           1 :   errno = 0;
      54           1 :   ASSERT (func ("nosuch", &st1) == -1);
      55           1 :   ASSERT (errno == ENOENT);
      56           1 :   errno = 0;
      57           1 :   ASSERT (func ("nosuch/", &st1) == -1);
      58           1 :   ASSERT (errno == ENOENT);
      59             : 
      60           1 :   ASSERT (close (creat (BASE "file", 0600)) == 0);
      61           1 :   ASSERT (func (BASE "file", &st1) == 0);
      62           1 :   ASSERT (S_ISREG (st1.st_mode));
      63           1 :   errno = 0;
      64           1 :   ASSERT (func (BASE "file/", &st1) == -1);
      65           1 :   ASSERT (errno == ENOTDIR);
      66             : 
      67             :   /* Now for some symlink tests, where supported.  We set up:
      68             :      link1 -> directory
      69             :      link2 -> file
      70             :      link3 -> dangling
      71             :      link4 -> loop
      72             :      then test behavior both with and without trailing slash.
      73             :   */
      74           1 :   if (symlink (".", BASE "link1") != 0)
      75             :     {
      76           0 :       ASSERT (unlink (BASE "file") == 0);
      77           0 :       if (print)
      78           0 :         fputs ("skipping test: symlinks not supported on this file system\n",
      79             :                stderr);
      80           0 :       return 77;
      81             :     }
      82           1 :   ASSERT (symlink (BASE "file", BASE "link2") == 0);
      83           1 :   ASSERT (symlink (BASE "nosuch", BASE "link3") == 0);
      84           1 :   ASSERT (symlink (BASE "link4", BASE "link4") == 0);
      85             : 
      86           1 :   ASSERT (func (BASE "link1", &st1) == 0);
      87           1 :   ASSERT (S_ISLNK (st1.st_mode));
      88           1 :   ASSERT (func (BASE "link1/", &st1) == 0);
      89           1 :   ASSERT (stat (BASE "link1", &st2) == 0);
      90           1 :   ASSERT (S_ISDIR (st1.st_mode));
      91           1 :   ASSERT (S_ISDIR (st2.st_mode));
      92             : #if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
      93           1 :   ASSERT (SAME_INODE (st1, st2));
      94             : #endif
      95             : 
      96           1 :   ASSERT (func (BASE "link2", &st1) == 0);
      97           1 :   ASSERT (S_ISLNK (st1.st_mode));
      98           1 :   errno = 0;
      99           1 :   ASSERT (func (BASE "link2/", &st1) == -1);
     100           1 :   ASSERT (errno == ENOTDIR);
     101             : 
     102           1 :   ASSERT (func (BASE "link3", &st1) == 0);
     103           1 :   ASSERT (S_ISLNK (st1.st_mode));
     104           1 :   errno = 0;
     105           1 :   ASSERT (func (BASE "link3/", &st1) == -1);
     106           1 :   ASSERT (errno == ENOENT);
     107             : 
     108           1 :   ASSERT (func (BASE "link4", &st1) == 0);
     109           1 :   ASSERT (S_ISLNK (st1.st_mode));
     110           1 :   errno = 0;
     111           1 :   ASSERT (func (BASE "link4/", &st1) == -1);
     112           1 :   ASSERT (errno == ELOOP);
     113             : 
     114             :   /* Cleanup.  */
     115           1 :   ASSERT (unlink (BASE "file") == 0);
     116           1 :   ASSERT (unlink (BASE "link1") == 0);
     117           1 :   ASSERT (unlink (BASE "link2") == 0);
     118           1 :   ASSERT (unlink (BASE "link3") == 0);
     119           1 :   ASSERT (unlink (BASE "link4") == 0);
     120             : 
     121           1 :   return 0;
     122             : }