| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Global-scope DSO mapping test with a static executable (BZ #15022). |
| 2 | Copyright (C) 2013-2016 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 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <dlfcn.h> |
| 20 | #include <stddef.h> |
| 21 | #include <stdio.h> |
| 22 | |
| 23 | #define MAGIC0 0 |
| 24 | #define MAGIC1 0x5500ffaa |
| 25 | #define MAGIC2 0xaaff0055 |
| 26 | |
| 27 | /* Mapping a DSO into the global scope used to crash in static |
| 28 | executables. Check that it succeeds and then that symbols from |
| 29 | the DSO can be accessed and operate as expected. */ |
| 30 | static int |
| 31 | do_test (void) |
| 32 | { |
| 33 | unsigned int (*getfoo) (void); |
| 34 | void (*setfoo) (unsigned int); |
| 35 | unsigned int *foop; |
| 36 | unsigned int foo; |
| 37 | void *handle; |
| 38 | |
| 39 | /* Try to map a module into the global scope. */ |
| 40 | handle = dlopen ("modstatic3.so", RTLD_LAZY | RTLD_GLOBAL); |
| 41 | if (handle == NULL) |
| 42 | { |
| 43 | printf ("dlopen (modstatic3.so): %s\n", dlerror ()); |
| 44 | return 1; |
| 45 | } |
| 46 | |
| 47 | /* Get at its symbols. */ |
| 48 | foop = dlsym (handle, "foo"); |
| 49 | if (foop == NULL) |
| 50 | { |
| 51 | printf ("dlsym (foo): %s\n", dlerror ()); |
| 52 | return 1; |
| 53 | } |
| 54 | |
| 55 | getfoo = dlsym (handle, "getfoo"); |
| 56 | if (getfoo == NULL) |
| 57 | { |
| 58 | printf ("dlsym (getfoo): %s\n", dlerror ()); |
| 59 | return 1; |
| 60 | } |
| 61 | |
| 62 | setfoo = dlsym (handle, "setfoo"); |
| 63 | if (setfoo == NULL) |
| 64 | { |
| 65 | printf ("dlsym (setfoo): %s\n", dlerror ()); |
| 66 | return 1; |
| 67 | } |
| 68 | |
| 69 | /* Make sure the view of the initial state is consistent. */ |
| 70 | foo = *foop; |
| 71 | if (foo != MAGIC0) |
| 72 | { |
| 73 | printf ("*foop: got %#x, expected %#x\n", foo, MAGIC0); |
| 74 | return 1; |
| 75 | } |
| 76 | |
| 77 | foo = getfoo (); |
| 78 | if (foo != MAGIC0) |
| 79 | { |
| 80 | printf ("getfoo: got %#x, expected %#x\n", foo, MAGIC0); |
| 81 | return 1; |
| 82 | } |
| 83 | |
| 84 | /* Likewise with one change to its state. */ |
| 85 | setfoo (MAGIC1); |
| 86 | |
| 87 | foo = *foop; |
| 88 | if (foo != MAGIC1) |
| 89 | { |
| 90 | printf ("*foop: got %#x, expected %#x\n", foo, MAGIC1); |
| 91 | return 1; |
| 92 | } |
| 93 | |
| 94 | foo = getfoo (); |
| 95 | if (foo != MAGIC1) |
| 96 | { |
| 97 | printf ("getfoo: got %#x, expected %#x\n", foo, MAGIC1); |
| 98 | return 1; |
| 99 | } |
| 100 | |
| 101 | /* And with another. */ |
| 102 | setfoo (MAGIC2); |
| 103 | |
| 104 | foo = *foop; |
| 105 | if (foo != MAGIC2) |
| 106 | { |
| 107 | printf ("*foop: got %#x, expected %#x\n", foo, MAGIC2); |
| 108 | return 1; |
| 109 | } |
| 110 | |
| 111 | foo = getfoo (); |
| 112 | if (foo != MAGIC2) |
| 113 | { |
| 114 | printf ("getfoo: got %#x, expected %#x\n", foo, MAGIC2); |
| 115 | return 1; |
| 116 | } |
| 117 | |
| 118 | /* All done, clean up. */ |
| 119 | getfoo = NULL; |
| 120 | setfoo = NULL; |
| 121 | foop = NULL; |
| 122 | dlclose (handle); |
| 123 | |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | #define TEST_FUNCTION do_test () |
| 128 | #include "../test-skeleton.c" |