support/support_readdir_r_check.c


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/* Error-checking helper for xreaddir_r, xreaddir64_r.
   Copyright (C) 2024 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <support/xdirent.h>

#include <support/check.h>

int
support_readdir_r_check (const char *name, int result, void *buf, void *ptr)
{
  if (result != 0)
    {
      errno = result;
      FAIL_EXIT1 ("%s: %m", name);
    }
  if (buf != ptr)
    FAIL_EXIT1 ("%s: buffer pointer and returned pointer differ: %p != %p",
                name, buf, ptr);
  return result;
}