elf/tst-audit14.c

   1 /* Main program with DT_AUDIT.  One audit module.
   2    Copyright (C) 2020-2021 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 <stdlib.h>
  20 #include <string.h>
  21 #include <support/check.h>
  22 #include <support/xstdio.h>
  23
  24 static int
  25 do_test (void)
  26 {
  27   /* Verify what the audit module has written.  This test assumes that
  28      standard output has been redirected to a regular file.  */
  29   FILE *fp = xfopen ("/dev/stdout", "r");
  30
  31   char *buffer = NULL;
  32   size_t buffer_length = 0;
  33   size_t line_length = xgetline (&buffer, &buffer_length, fp);
  34   const char *message = "info: tst-auditlogmod-1.so loaded\n";
  35   TEST_COMPARE_BLOB (message, strlen (message), buffer, line_length);
  36
  37   /* No more audit module output.  */
  38   line_length = xgetline (&buffer, &buffer_length, fp);
  39   TEST_COMPARE_BLOB ("", 0, buffer, line_length);
  40
  41   free (buffer);
  42   xfclose (fp);
  43   return 0;
  44 }
  45
  46 #include <support/test-driver.c>