tests/test-mkdir.h

   1 /* Test of mkdir() function.
   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 /* This file is designed to test both mkdir(a,b) and
  18    mkdirat(AT_FDCWD,a,b).  FUNC is the function to test.  Assumes that
  19    BASE and ASSERT are already defined, and that appropriate headers
  20    are already included.  If PRINT, warn before skipping tests with
  21    status 77 when symlinks are unsupported.  */
  22
  23 static int
  24 test_mkdir (int (*func) (char const *, mode_t), bool print)
  25 {
  26   /* Test basic error handling.  */
  27   ASSERT (close (creat (BASE "file", 0600)) == 0);
  28   errno = 0;
  29   ASSERT (func (BASE "file", 0700) == -1);
  30   ASSERT (errno == EEXIST);
  31   errno = 0;
  32   ASSERT (func (BASE "file/", 0700) == -1);
  33   ASSERT (errno == ENOTDIR || errno == EEXIST);
  34   errno = 0;
  35   ASSERT (func (BASE "file/dir", 0700) == -1);
  36   ASSERT (errno == ENOTDIR || errno == ENOENT || errno == EOPNOTSUPP);
  37   ASSERT (unlink (BASE "file") == 0);
  38   errno = 0;
  39   ASSERT (func ("", 0700) == -1);
  40   ASSERT (errno == ENOENT);
  41   errno = 0;
  42   ASSERT (func (BASE "dir/sub", 0700) == -1);
  43   ASSERT (errno == ENOENT);
  44   errno = 0;
  45   ASSERT (func (BASE "dir/.", 0700) == -1);
  46   ASSERT (errno == ENOENT);
  47   errno = 0;
  48   ASSERT (func (BASE "dir/.//", 0700) == -1);
  49   ASSERT (errno == ENOENT);
  50
  51   /* Test trailing slash handling.  */
  52   ASSERT (func (BASE "dir", 0700) == 0);
  53   errno = 0;
  54   ASSERT (func (BASE "dir", 0700) == -1);
  55   ASSERT (errno == EEXIST);
  56   ASSERT (rmdir (BASE "dir") == 0);
  57   ASSERT (func (BASE "dir/", 0700) == 0);
  58   errno = 0;
  59   ASSERT (func (BASE "dir/", 0700) == -1);
  60   ASSERT (errno == EEXIST);
  61   ASSERT (rmdir (BASE "dir") == 0);
  62
  63   /* Test symlink behavior.  POSIX requires the creation of
  64      directories through a dangling symlink with trailing slash, but
  65      GNU does not yet implement that, so we support either behavior
  66      for now.  */
  67   if (symlink (BASE "dir", BASE "link"))
  68     {
  69       if (print)
  70         fputs ("skipping test: symlinks not supported on this file system\n",
  71                stderr);
  72       return 77;
  73     }
  74   errno = 0;
  75   ASSERT (func (BASE "link", 0700) == -1);
  76   ASSERT (errno == EEXIST);
  77   {
  78     int result;
  79     errno = 0;
  80     result = func (BASE "link/", 0700);
  81     if (!result)
  82       ASSERT (rmdir (BASE "dir") == 0);
  83     else
  84       {
  85         ASSERT (result == -1);
  86         ASSERT (errno == EEXIST);
  87         errno = 0;
  88         ASSERT (rmdir (BASE "dir") == -1);
  89         ASSERT (errno == ENOENT);
  90       }
  91   }
  92   errno = 0;
  93   ASSERT (func (BASE "link/.", 0700) == -1);
  94   ASSERT (errno == ENOENT);
  95   ASSERT (unlink (BASE "link") == 0);
  96
  97   return 0;
  98 }