tests/test-fstatat.c

   1 /* Tests of fstatat.
   2    Copyright (C) 2009-2018 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 (fstatat, int, (int, char const *, struct stat *, int));
  25
  26 #include <fcntl.h>
  27 #include <errno.h>
  28 #include <stdbool.h>
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <unistd.h>
  32
  33 #include "openat.h"
  34 #include "same-inode.h"
  35 #include "ignore-value.h"
  36 #include "macros.h"
  37
  38 #ifndef BASE
  39 # define BASE "test-fstatat.t"
  40 #endif
  41
  42 #include "test-lstat.h"
  43 #include "test-stat.h"
  44
  45 static int dfd = AT_FDCWD;
  46
  47 /* Wrapper around fstatat to test stat behavior.  */
  48 static int
  49 do_stat (char const *name, struct stat *st)
  50 {
  51 #ifdef TEST_STATAT
  52   return statat (dfd, name, st);
  53 #else
  54   return fstatat (dfd, name, st, 0);
  55 #endif
  56 }
  57
  58 /* Wrapper around fstatat to test lstat behavior.  */
  59 static int
  60 do_lstat (char const *name, struct stat *st)
  61 {
  62 #ifdef TEST_STATAT
  63   return lstatat (dfd, name, st);
  64 #else
  65   return fstatat (dfd, name, st, AT_SYMLINK_NOFOLLOW);
  66 #endif
  67 }
  68
  69 int
  70 main (int argc _GL_UNUSED, char *argv[])
  71 {
  72   int result;
  73
  74   /* Remove any leftovers from a previous partial run.  */
  75   ignore_value (system ("rm -rf " BASE "*"));
  76
  77   /* Test behaviour for invalid file descriptors.  */
  78   {
  79     struct stat statbuf;
  80
  81     errno = 0;
  82     ASSERT (fstatat (-1, "foo", &statbuf, 0) == -1);
  83     ASSERT (errno == EBADF);
  84   }
  85   {
  86     struct stat statbuf;
  87
  88     close (99);
  89     errno = 0;
  90     ASSERT (fstatat (99, "foo", &statbuf, 0) == -1);
  91     ASSERT (errno == EBADF);
  92   }
  93
  94   result = test_stat_func (do_stat, false);
  95   ASSERT (test_lstat_func (do_lstat, false) == result);
  96   dfd = open (".", O_RDONLY);
  97   ASSERT (0 <= dfd);
  98   ASSERT (test_stat_func (do_stat, false) == result);
  99   ASSERT (test_lstat_func (do_lstat, false) == result);
 100   ASSERT (close (dfd) == 0);
 101
 102   /* FIXME - add additional tests of dfd not at current directory.  */
 103
 104   if (result == 77)
 105     fputs ("skipping test: symlinks not supported on this file system\n",
 106            stderr);
 107   return result;
 108 }