io/tst-stat.c

   1 /* Basic tests for stat, lstat, fstat, and fstatat.
   2    Copyright (C) 2021 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <array_length.h>
  20 #include <errno.h>
  21 #include <fcntl.h>
  22 #include <support/check.h>
  23 #include <support/support.h>
  24 #include <support/temp_file.h>
  25 #include <support/xunistd.h>
  26 #include <sys/stat.h>
  27 #include <sys/sysmacros.h>
  28 #include <unistd.h>
  29
  30 static void
  31 stat_check (int fd, const char *path, struct stat *st)
  32 {
  33   TEST_COMPARE (stat (path, st), 0);
  34 }
  35
  36 static void
  37 lstat_check (int fd, const char *path, struct stat *st)
  38 {
  39   TEST_COMPARE (lstat (path, st), 0);
  40 }
  41
  42 static void
  43 fstat_check (int fd, const char *path, struct stat *st)
  44 {
  45   /* Test for invalid fstat input (BZ #27559).  */
  46   TEST_COMPARE (fstat (AT_FDCWD, st), -1);
  47   TEST_COMPARE (errno, EBADF);
  48
  49   TEST_COMPARE (fstat (fd, st), 0);
  50 }
  51
  52 static void
  53 fstatat_check (int fd, const char *path, struct stat *st)
  54 {
  55   TEST_COMPARE (fstatat (fd, "", st, 0), -1);
  56   TEST_COMPARE (errno, ENOENT);
  57
  58   TEST_COMPARE (fstatat (fd, path, st, 0), 0);
  59 }
  60
  61 typedef void (*test_t)(int, const char *path, struct stat *);
  62
  63 static int
  64 do_test (void)
  65 {
  66   char *path;
  67   int fd = create_temp_file ("tst-fstat.", &path);
  68   TEST_VERIFY_EXIT (fd >= 0);
  69   support_write_file_string (path, "abc");
  70
  71   struct statx stx;
  72   TEST_COMPARE (statx (fd, path, 0, STATX_BASIC_STATS, &stx), 0);
  73
  74   test_t tests[] = { stat_check, lstat_check, fstat_check, fstatat_check };
  75
  76   for (int i = 0; i < array_length (tests); i++)
  77     {
  78       struct stat st;
  79       tests[i](fd, path, &st);
  80
  81       TEST_COMPARE (stx.stx_dev_major, major (st.st_dev));
  82       TEST_COMPARE (stx.stx_dev_minor, minor (st.st_dev));
  83       TEST_COMPARE (stx.stx_ino, st.st_ino);
  84       TEST_COMPARE (stx.stx_mode, st.st_mode);
  85       TEST_COMPARE (stx.stx_nlink, st.st_nlink);
  86       TEST_COMPARE (stx.stx_uid, st.st_uid);
  87       TEST_COMPARE (stx.stx_gid, st.st_gid);
  88       TEST_COMPARE (stx.stx_rdev_major, major (st.st_rdev));
  89       TEST_COMPARE (stx.stx_rdev_minor, minor (st.st_rdev));
  90       TEST_COMPARE (stx.stx_blksize, st.st_blksize);
  91       TEST_COMPARE (stx.stx_blocks, st.st_blocks);
  92
  93       TEST_COMPARE (stx.stx_ctime.tv_sec, st.st_ctim.tv_sec);
  94       TEST_COMPARE (stx.stx_mtime.tv_sec, st.st_mtim.tv_sec);
  95       if (support_stat_nanoseconds ())
  96         {
  97           TEST_COMPARE (stx.stx_ctime.tv_nsec, st.st_ctim.tv_nsec);
  98           TEST_COMPARE (stx.stx_mtime.tv_nsec, st.st_mtim.tv_nsec);
  99         }
 100     }
 101
 102   return 0;
 103 }
 104
 105 #include <support/test-driver.c>