elf/tst-dl-iter-static.c

   1 /* BZ #16046 dl_iterate_phdr static executable test.
   2    Copyright (C) 2014-2022 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 <link.h>
  20
  21 /* Check that the link map of the static executable itself is iterated
  22    over exactly once.  */
  23
  24 static int
  25 callback (struct dl_phdr_info *info, size_t size, void *data)
  26 {
  27   int *count = data;
  28
  29   if (info->dlpi_name[0] == '\0')
  30     (*count)++;
  31
  32   return 0;
  33 }
  34
  35 static int
  36 do_test (void)
  37 {
  38   int count = 0;
  39   int status;
  40
  41   status = dl_iterate_phdr (callback, &count);
  42
  43   return status || count != 1;
  44 }
  45
  46 #include <support/test-driver.c>