elf/tst-audit25a.c

   1 /* Check LD_AUDIT and LD_BIND_NOW.
   2    Copyright (C) 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 <array_length.h>
  20 #include <errno.h>
  21 #include <getopt.h>
  22 #include <limits.h>
  23 #include <inttypes.h>
  24 #include <string.h>
  25 #include <stdlib.h>
  26 #include <support/capture_subprocess.h>
  27 #include <support/check.h>
  28 #include <support/xstdio.h>
  29 #include <support/support.h>
  30 #include <sys/auxv.h>
  31
  32 static int restart;
  33 #define CMDLINE_OPTIONS \
  34   { "restart", no_argument, &restart, 1 },
  35
  36 void tst_audit25mod1_func1 (void);
  37 void tst_audit25mod1_func2 (void);
  38 void tst_audit25mod2_func1 (void);
  39 void tst_audit25mod2_func2 (void);
  40
  41 static int
  42 handle_restart (void)
  43 {
  44   tst_audit25mod1_func1 ();
  45   tst_audit25mod1_func2 ();
  46   tst_audit25mod2_func1 ();
  47   tst_audit25mod2_func2 ();
  48
  49   return 0;
  50 }
  51
  52 static int
  53 do_test (int argc, char *argv[])
  54 {
  55   /* We must have either:
  56      - One or four parameters left if called initially:
  57        + path to ld.so         optional
  58        + "--library-path"      optional
  59        + the library path      optional
  60        + the application name  */
  61
  62   if (restart)
  63     return handle_restart ();
  64
  65   setenv ("LD_AUDIT", "tst-auditmod25.so", 0);
  66
  67   char *spargv[9];
  68   int i = 0;
  69   for (; i < argc - 1; i++)
  70     spargv[i] = argv[i + 1];
  71   spargv[i++] = (char *) "--direct";
  72   spargv[i++] = (char *) "--restart";
  73   spargv[i] = NULL;
  74   TEST_VERIFY_EXIT (i < array_length (spargv));
  75
  76   {
  77     struct support_capture_subprocess result
  78       = support_capture_subprogram (spargv[0], spargv);
  79     support_capture_subprocess_check (&result, "tst-audit25a", 0,
  80                                       sc_allow_stderr);
  81
  82     /* tst-audit25a is build with -Wl,-z,lazy and tst-audit25mod1 with
  83        -Wl,-z,now; so only tst_audit25mod3_func1 should be expected to
  84        have LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT.  */
  85     TEST_COMPARE_STRING (result.err.buffer,
  86                          "la_symbind: tst_audit25mod3_func1 1\n"
  87                          "la_symbind: tst_audit25mod1_func1 0\n"
  88                          "la_symbind: tst_audit25mod1_func2 0\n"
  89                          "la_symbind: tst_audit25mod2_func1 0\n"
  90                          "la_symbind: tst_audit25mod4_func1 0\n"
  91                          "la_symbind: tst_audit25mod2_func2 0\n");
  92
  93     support_capture_subprocess_free (&result);
  94   }
  95
  96   {
  97     setenv ("LD_BIND_NOW", "1", 0);
  98     struct support_capture_subprocess result
  99       = support_capture_subprogram (spargv[0], spargv);
 100     support_capture_subprocess_check (&result, "tst-audit25a", 0,
 101                                       sc_allow_stderr);
 102
 103     /* With LD_BIND_NOW all symbols are expected to have
 104        LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT.  Also the resolution
 105        order is done in breadth-first order.  */
 106     TEST_COMPARE_STRING (result.err.buffer,
 107                          "la_symbind: tst_audit25mod4_func1 1\n"
 108                          "la_symbind: tst_audit25mod3_func1 1\n"
 109                          "la_symbind: tst_audit25mod1_func1 1\n"
 110                          "la_symbind: tst_audit25mod2_func1 1\n"
 111                          "la_symbind: tst_audit25mod1_func2 1\n"
 112                          "la_symbind: tst_audit25mod2_func2 1\n");
 113
 114     support_capture_subprocess_free (&result);
 115   }
 116
 117   return 0;
 118 }
 119
 120 #define TEST_FUNCTION_ARGV do_test
 121 #include <support/test-driver.c>