elf/tst-audit19b.c

   1 /* Check if DT_AUDIT a module with la_plt{enter,exit} call la_symbind
   2    for lazy resolution.
   3    Copyright (C) 2021-2022 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <getopt.h>
  21 #include <support/capture_subprocess.h>
  22 #include <support/check.h>
  23 #include <support/xstdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <stdbool.h>
  27
  28 static int restart;
  29 #define CMDLINE_OPTIONS \
  30   { "restart", no_argument, &restart, 1 },
  31
  32 int tst_audit18bmod1_func (void);
  33
  34 static int
  35 handle_restart (void)
  36 {
  37   TEST_COMPARE (tst_audit18bmod1_func (), 10);
  38   return 0;
  39 }
  40
  41 static inline bool
  42 startswith (const char *str, const char *pre)
  43 {
  44   size_t lenpre = strlen (pre);
  45   size_t lenstr = strlen (str);
  46   return lenstr < lenpre ? false : memcmp (pre, str, lenpre) == 0;
  47 }
  48
  49 static int
  50 do_test (int argc, char *argv[])
  51 {
  52   /* We must have either:
  53      - One our fource parameters left if called initially:
  54        + path to ld.so         optional
  55        + "--library-path"      optional
  56        + the library path      optional
  57        + the application name  */
  58
  59   if (restart)
  60     return handle_restart ();
  61
  62   char *spargv[9];
  63   int i = 0;
  64   for (; i < argc - 1; i++)
  65     spargv[i] = argv[i + 1];
  66   spargv[i++] = (char *) "--direct";
  67   spargv[i++] = (char *) "--restart";
  68   spargv[i] = NULL;
  69
  70   setenv ("LD_AUDIT", "tst-auditmod18b.so", 0);
  71   struct support_capture_subprocess result
  72     = support_capture_subprogram (spargv[0], spargv);
  73   support_capture_subprocess_check (&result, "tst-audit18b", 0, sc_allow_stderr);
  74
  75   bool find_symbind = false;
  76
  77   FILE *out = fmemopen (result.err.buffer, result.err.length, "r");
  78   TEST_VERIFY (out != NULL);
  79   char *buffer = NULL;
  80   size_t buffer_length = 0;
  81   while (xgetline (&buffer, &buffer_length, out))
  82     if (startswith (buffer, "la_symbind: tst_audit18bmod1_func") == 0)
  83       find_symbind = true;
  84
  85   TEST_COMPARE (find_symbind, true);
  86
  87   free (buffer);
  88   xfclose (out);
  89
  90   return 0;
  91 }
  92
  93 #define TEST_FUNCTION_ARGV do_test
  94 #include <support/test-driver.c>