(root)/
glibc-2.38/
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  }