posix/tst-posix_fadvise64.c

   1 /* Basic posix_fadvise64 tests.
   2    Copyright (C) 2016-2023 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 #define _FILE_OFFSET_BITS 64
  20 #include "tst-posix_fadvise-common.c"
  21
  22 static int
  23 do_test (void)
  24 {
  25   int ret = do_test_common ();
  26   if (ret == 1)
  27     return 1;
  28
  29   /* Test passing a negative length.  The compat fadvise64 might use
  30      off64_t for size argument passing, so using -1 for len without
  31      _FILE_OFFSET_BITS might not trigger the length issue.  */
  32   if (posix_fadvise (temp_fd, 0, -1, POSIX_FADV_NORMAL) != EINVAL)
  33     FAIL_EXIT1 ("posix_fadvise with negative length did not return EINVAL");
  34
  35   /* Check with some offset values larger than 32-bits.  */
  36   off_t offset = UINT32_MAX + 2048LL;
  37   if (posix_fadvise (temp_fd, 0, offset, POSIX_FADV_NORMAL) != 0)
  38     FAIL_EXIT1 ("posix_fadvise failed (offset = 0, len = %zd) failed",
  39                 (ssize_t)offset);
  40
  41   if (posix_fadvise (temp_fd, offset, 0, POSIX_FADV_NORMAL) != 0)
  42     FAIL_EXIT1 ("posix_fadvise failed (offset = %zd, len = 0) failed",
  43                 (ssize_t)offset);
  44
  45   return 0;
  46 }