1  /* Tests of mkdirat.
       2     Copyright (C) 2009-2023 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  #include <config.h>
      20  
      21  #include <sys/stat.h>
      22  
      23  #include "signature.h"
      24  SIGNATURE_CHECK (mkdirat, int, (int, char const *, mode_t));
      25  
      26  #include <fcntl.h>
      27  #include <errno.h>
      28  #include <stdio.h>
      29  #include <stdlib.h>
      30  #include <unistd.h>
      31  
      32  #include "ignore-value.h"
      33  #include "macros.h"
      34  
      35  #define BASE "test-mkdirat.t"
      36  
      37  #include "test-mkdir.h"
      38  
      39  static int dfd = AT_FDCWD;
      40  
      41  /* Wrapper to test mkdirat like mkdir.  */
      42  static int
      43  do_mkdir (char const *name, mode_t mode)
      44  {
      45    return mkdirat (dfd, name, mode);
      46  }
      47  
      48  int
      49  main (_GL_UNUSED int argc, char *argv[])
      50  {
      51    int result;
      52  
      53    /* Clean up any trash from prior testsuite runs.  */
      54    ignore_value (system ("rm -rf " BASE "*"));
      55  
      56    /* Test behaviour for invalid file descriptors.  */
      57    {
      58      errno = 0;
      59      ASSERT (mkdirat (-1, "foo", 0700) == -1);
      60      ASSERT (errno == EBADF);
      61    }
      62    {
      63      close (99);
      64      errno = 0;
      65      ASSERT (mkdirat (99, "foo", 0700) == -1);
      66      ASSERT (errno == EBADF);
      67    }
      68  
      69    /* Test basic mkdir functionality.  */
      70    result = test_mkdir (do_mkdir, false);
      71    dfd = open (".", O_RDONLY);
      72    ASSERT (0 <= dfd);
      73    ASSERT (test_mkdir (do_mkdir, false) == result);
      74  
      75    /* Tests specific to mkdirat.  */
      76    ASSERT (mkdirat (dfd, BASE "dir1", 0700) == 0);
      77    ASSERT (chdir (BASE "dir1") == 0);
      78    ASSERT (close (dfd) == 0);
      79    dfd = open ("..", O_RDONLY);
      80    ASSERT (0 <= dfd);
      81    ASSERT (mkdirat (dfd, BASE "dir2", 0700) == 0);
      82    ASSERT (close (dfd) == 0);
      83    errno = 0;
      84    ASSERT (mkdirat (dfd, BASE "dir3", 0700) == -1);
      85    ASSERT (errno == EBADF);
      86    dfd = open ("/dev/null", O_RDONLY);
      87    ASSERT (0 <= dfd);
      88    errno = 0;
      89    ASSERT (mkdirat (dfd, "dir3", 0700) == -1);
      90    ASSERT (errno == ENOTDIR);
      91    ASSERT (close (dfd) == 0);
      92    ASSERT (chdir ("..") == 0);
      93    ASSERT (rmdir (BASE "dir1") == 0);
      94    ASSERT (rmdir (BASE "dir2") == 0);
      95  
      96    return result;
      97  }