elf/tst-protected1b.c

   1 /* Test the protected visibility when main is linked with modb and moda
   2    in that order:
   3    1. Protected symbols, protected1, protected2 and protected3, defined
   4       in moda, are used in moda.
   5    2.  Protected symbol, protected3, defined in modb, are used in modb
   6    3. Symbol, protected1, defined in modb, is used in main and modb.
   7    4. Symbol, protected2, defined in main, is used in main.
   8    5. Symbol, protected3, defined in modb, is also used in main.
   9
  10    Copyright (C) 2015-2016 Free Software Foundation, Inc.
  11    This file is part of the GNU C Library.
  12
  13    The GNU C Library is free software; you can redistribute it and/or
  14    modify it under the terms of the GNU Lesser General Public
  15    License as published by the Free Software Foundation; either
  16    version 2.1 of the License, or (at your option) any later version.
  17
  18    The GNU C Library is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21    Lesser General Public License for more details.
  22
  23    You should have received a copy of the GNU Lesser General Public
  24    License along with the GNU C Library; if not, see
  25    <http://www.gnu.org/licenses/>.  */
  26
  27 /* This file must be compiled as PIE to avoid copy relocation when
  28    accessing protected symbols defined in shared libaries since copy
  29    relocation doesn't work with protected symbols and linker in
  30    binutils 2.26 enforces this rule.  */
  31
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35
  36 #include "tst-protected1mod.h"
  37
  38 /* Prototype for our test function.  */
  39 extern int do_test (void);
  40
  41 int protected2 = -1;
  42
  43 #define TEST_FUNCTION do_test ()
  44
  45 /* This defines the `main' function and some more.  */
  46 #include <test-skeleton.c>
  47
  48 int
  49 do_test (void)
  50 {
  51   int res = 0;
  52
  53   /* Check if we get the same address for the protected data symbol.  */
  54   if (&protected1 == protected1a_p ())
  55     {
  56       puts ("`protected1' in main and moda has  same address");
  57       res = 1;
  58     }
  59   if (&protected1 != protected1b_p ())
  60     {
  61       puts ("`protected1' in main and modb doesn't have same address");
  62       res = 1;
  63     }
  64
  65   /* Check if we get the right value for the protected data symbol.  */
  66   if (protected1 != -3)
  67     {
  68       puts ("`protected1' in main and modb doesn't have same value");
  69       res = 1;
  70     }
  71
  72   /* Check if we get the right value for data defined in executable.  */
  73   if (protected2 != -1)
  74     {
  75       puts ("`protected2' in main has the wrong value");
  76       res = 1;
  77     }
  78
  79   /* Check `protected1' in moda.  */
  80   if (!check_protected1 ())
  81     {
  82       puts ("`protected1' in moda has the wrong value");
  83       res = 1;
  84     }
  85
  86   /* Check `protected2' in moda.  */
  87   if (!check_protected2 ())
  88     {
  89       puts ("`protected2' in moda has the wrong value");
  90       res = 1;
  91     }
  92
  93   /* Check if we get the same address for the protected data symbol.  */
  94   if (&protected3 == protected3a_p ())
  95     {
  96       puts ("`protected3' in main and moda has same address");
  97       res = 1;
  98     }
  99   if (&protected3 != protected3b_p ())
 100     {
 101       puts ("`protected3' in main and modb doesn't have same address");
 102       res = 1;
 103     }
 104
 105   /* Check if we get the right value for the protected data symbol.  */
 106   if (protected3 != -5)
 107     {
 108       puts ("`protected3' in main and modb doesn't have same value");
 109       res = 1;
 110     }
 111
 112   /* Check `protected3' in moda.  */
 113   if (!check_protected3a ())
 114     {
 115       puts ("`protected3' in moda has the wrong value");
 116       res = 1;
 117     }
 118
 119   /* Check `protected3' in modb.  */
 120   if (!check_protected3b ())
 121     {
 122       puts ("`protected3' in modb has the wrong value");
 123       res = 1;
 124     }
 125
 126   /* Set `protected2' in moda to 30.  */
 127   set_protected2 (300);
 128
 129   /* Check `protected2' in moda.  */
 130   if (!check_protected2 ())
 131     {
 132       puts ("`protected2' in moda has the wrong value");
 133       res = 1;
 134     }
 135
 136   /* Check if we get the right value for data defined in executable.  */
 137   if (protected2 != -1)
 138     {
 139       puts ("`protected2' in main has the wrong value");
 140       res = 1;
 141     }
 142
 143   /* Set `protected1' in moda to 30.  */
 144   set_protected1a (30);
 145
 146   /* Check `protected1' in moda.  */
 147   if (!check_protected1 ())
 148     {
 149       puts ("`protected1' in moda has the wrong value");
 150       res = 1;
 151     }
 152
 153   /* Check if we get the same value for the protected data symbol.  */
 154   if (protected1 != -3)
 155     {
 156       puts ("`protected1' in main has the wrong value");
 157       res = 1;
 158     }
 159
 160   protected2 = -300;
 161
 162   /* Check `protected2' in moda.  */
 163   if (!check_protected2 ())
 164     {
 165       puts ("`protected2' in moda has the wrong value");
 166       res = 1;
 167     }
 168
 169   /* Check if data defined in executable is changed.  */
 170   if (protected2 != -300)
 171     {
 172       puts ("`protected2' in main is changed");
 173       res = 1;
 174     }
 175
 176   /* Set `protected1' in modb to 40.  */
 177   set_protected1b (40);
 178
 179   /* Check `protected1' in moda.  */
 180   if (!check_protected1 ())
 181     {
 182       puts ("`protected1' in moda has the wrong value");
 183       res = 1;
 184     }
 185
 186   /* Check if we get the updated value for the protected data symbol.  */
 187   if (protected1 != 40)
 188     {
 189       puts ("`protected1' in main doesn't have the updated value");
 190       res = 1;
 191     }
 192
 193   /* Set `protected3' in moda to 80.  */
 194   set_protected3a (80);
 195
 196   /* Check `protected3' in moda.  */
 197   if (!check_protected3a ())
 198     {
 199       puts ("`protected3' in moda has the wrong value");
 200       res = 1;
 201     }
 202
 203   /* Check if we get the updated value for the protected data symbol.  */
 204   if (protected3 != -5)
 205     {
 206       puts ("`protected3' in main doesn't have the updated value");
 207       res = 1;
 208     }
 209
 210   /* Check `protected3' in modb.  */
 211   if (!check_protected3b ())
 212     {
 213       puts ("`protected3' in modb has the wrong value");
 214       res = 1;
 215     }
 216
 217   /* Set `protected3' in modb to 100.  */
 218   set_protected3b (100);
 219
 220   /* Check `protected3' in moda.  */
 221   if (!check_protected3a ())
 222     {
 223       puts ("`protected3' in moda has the wrong value");
 224       res = 1;
 225     }
 226
 227   /* Check if we get the updated value for the protected data symbol.  */
 228   if (protected3 != 100)
 229     {
 230       puts ("`protected3' in main doesn't have the updated value");
 231       res = 1;
 232     }
 233
 234   /* Check `protected3' in modb.  */
 235   if (!check_protected3b ())
 236     {
 237       puts ("`protected3' in modb has the wrong value");
 238       res = 1;
 239     }
 240
 241   return res;
 242 }