tests/test-mkdirat.c

   1 /* Tests of mkdirat.
   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 #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 ? result : test_exit_status);
  97 }