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glibc/dlfcn/tststatic4.c
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/* Global object symbol access tests with a static executable (BZ #15022). | |
Copyright (C) 2013-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <dlfcn.h> | |
#include <stddef.h> | |
#include <stdio.h> | |
#define MAGIC0 0 | |
#define MAGIC1 0x5500ffaa | |
#define MAGIC2 0xaaff0055 | |
#define MAGIC3 0xff55aa00 | |
/* Check the ability to access the global symbol object and then | |
global-scope symbol access consistency via different mappings | |
requested from a static executable. */ | |
static int | |
do_test (void) | |
{ | |
unsigned int (*initial_getfoo) (void); | |
void (*initial_setfoo) (unsigned int); | |
unsigned int (*global_getfoo) (void); | |
void (*global_setfoo) (unsigned int); | |
unsigned int (*local_getfoo) (void); | |
void (*local_setfoo) (unsigned int); | |
unsigned int *initial_foop; | |
unsigned int *global_foop; | |
unsigned int *local_foop; | |
void *initial_handle; | |
void *global_handle; | |
void *local_handle; | |
unsigned int foo; | |
/* Try to map self. */ | |
initial_handle = dlopen (NULL, RTLD_LAZY | RTLD_GLOBAL); | |
if (initial_handle == NULL) | |
{ | |
printf ("dlopen [initial] (NULL): %s\n", dlerror ()); | |
return 1; | |
} | |
/* Make sure symbol lookups fail gracefully. */ | |
initial_foop = dlsym (initial_handle, "foo"); | |
if (initial_foop != NULL) | |
{ | |
printf ("dlsym [initial] (foo): got %p, expected NULL\n", initial_foop); | |
return 1; | |
} | |
initial_getfoo = dlsym (initial_handle, "getfoo"); | |
if (initial_getfoo != NULL) | |
{ | |
printf ("dlsym [initial] (getfoo): got %p, expected NULL\n", | |
initial_getfoo); | |
return 1; | |
} | |
initial_setfoo = dlsym (initial_handle, "setfoo"); | |
if (initial_setfoo != NULL) | |
{ | |
printf ("dlsym [initial] (setfoo): got %p, expected NULL\n", | |
initial_setfoo); | |
return 1; | |
} | |
/* Try to map a module into the global scope. */ | |
global_handle = dlopen ("modstatic3.so", RTLD_LAZY | RTLD_GLOBAL); | |
if (global_handle == NULL) | |
{ | |
printf ("dlopen [global] (modstatic3.so): %s\n", dlerror ()); | |
return 1; | |
} | |
/* Get at its symbols. */ | |
global_foop = dlsym (global_handle, "foo"); | |
if (global_foop == NULL) | |
{ | |
printf ("dlsym [global] (foo): %s\n", dlerror ()); | |
return 1; | |
} | |
global_getfoo = dlsym (global_handle, "getfoo"); | |
if (global_getfoo == NULL) | |
{ | |
printf ("dlsym [global] (getfoo): %s\n", dlerror ()); | |
return 1; | |
} | |
global_setfoo = dlsym (global_handle, "setfoo"); | |
if (global_setfoo == NULL) | |
{ | |
printf ("dlsym [global] (setfoo): %s\n", dlerror ()); | |
return 1; | |
} | |
/* Try to map self again now. */ | |
local_handle = dlopen (NULL, RTLD_LAZY | RTLD_LOCAL); | |
if (local_handle == NULL) | |
{ | |
printf ("dlopen [local] (NULL): %s\n", dlerror ()); | |
return 1; | |
} | |
/* Make sure we can get at the previously loaded module's symbols | |
via this handle too. */ | |
local_foop = dlsym (local_handle, "foo"); | |
if (local_foop == NULL) | |
{ | |
printf ("dlsym [local] (foo): %s\n", dlerror ()); | |
return 1; | |
} | |
local_getfoo = dlsym (local_handle, "getfoo"); | |
if (local_getfoo == NULL) | |
{ | |
printf ("dlsym [local] (getfoo): %s\n", dlerror ()); | |
return 1; | |
} | |
local_setfoo = dlsym (local_handle, "setfoo"); | |
if (local_setfoo == NULL) | |
{ | |
printf ("dlsym [local] (setfoo): %s\n", dlerror ()); | |
return 1; | |
} | |
/* Make sure we can get at the previously loaded module's symbols | |
via a handle that was obtained before the module was loaded too. */ | |
initial_foop = dlsym (initial_handle, "foo"); | |
if (initial_foop == NULL) | |
{ | |
printf ("dlsym [initial] (foo): %s\n", dlerror ()); | |
return 1; | |
} | |
initial_getfoo = dlsym (initial_handle, "getfoo"); | |
if (initial_getfoo == NULL) | |
{ | |
printf ("dlsym [initial] (getfoo): %s\n", dlerror ()); | |
return 1; | |
} | |
initial_setfoo = dlsym (initial_handle, "setfoo"); | |
if (initial_setfoo == NULL) | |
{ | |
printf ("dlsym [initial] (setfoo): %s\n", dlerror ()); | |
return 1; | |
} | |
/* Make sure the view of the initial state is consistent. */ | |
foo = *initial_foop; | |
if (foo != MAGIC0) | |
{ | |
printf ("*foop [initial]: got %#x, expected %#x\n", foo, MAGIC0); | |
return 1; | |
} | |
foo = *global_foop; | |
if (foo != MAGIC0) | |
{ | |
printf ("*foop [global]: got %#x, expected %#x\n", foo, MAGIC0); | |
return 1; | |
} | |
foo = *local_foop; | |
if (foo != MAGIC0) | |
{ | |
printf ("*foop [local]: got %#x, expected %#x\n", foo, MAGIC0); | |
return 1; | |
} | |
foo = initial_getfoo (); | |
if (foo != MAGIC0) | |
{ | |
printf ("getfoo [initial]: got %#x, expected %#x\n", foo, MAGIC0); | |
return 1; | |
} | |
foo = global_getfoo (); | |
if (foo != MAGIC0) | |
{ | |
printf ("getfoo [global]: got %#x, expected %#x\n", foo, MAGIC0); | |
return 1; | |
} | |
foo = local_getfoo (); | |
if (foo != MAGIC0) | |
{ | |
printf ("getfoo [local]: got %#x, expected %#x\n", foo, MAGIC0); | |
return 1; | |
} | |
/* Likewise with a change to its state made through the first handle. */ | |
initial_setfoo (MAGIC1); | |
foo = *initial_foop; | |
if (foo != MAGIC1) | |
{ | |
printf ("*foop [initial]: got %#x, expected %#x\n", foo, MAGIC1); | |
return 1; | |
} | |
foo = *global_foop; | |
if (foo != MAGIC1) | |
{ | |
printf ("*foop [global]: got %#x, expected %#x\n", foo, MAGIC1); | |
return 1; | |
} | |
foo = *local_foop; | |
if (foo != MAGIC1) | |
{ | |
printf ("*foop [local]: got %#x, expected %#x\n", foo, MAGIC1); | |
return 1; | |
} | |
foo = initial_getfoo (); | |
if (foo != MAGIC1) | |
{ | |
printf ("getfoo [initial]: got %#x, expected %#x\n", foo, MAGIC1); | |
return 1; | |
} | |
foo = global_getfoo (); | |
if (foo != MAGIC1) | |
{ | |
printf ("getfoo [global]: got %#x, expected %#x\n", foo, MAGIC1); | |
return 1; | |
} | |
foo = local_getfoo (); | |
if (foo != MAGIC1) | |
{ | |
printf ("getfoo [local]: got %#x, expected %#x\n", foo, MAGIC1); | |
return 1; | |
} | |
/* Likewise with a change to its state made through the second handle. */ | |
global_setfoo (MAGIC2); | |
foo = *initial_foop; | |
if (foo != MAGIC2) | |
{ | |
printf ("*foop [initial]: got %#x, expected %#x\n", foo, MAGIC2); | |
return 1; | |
} | |
foo = *global_foop; | |
if (foo != MAGIC2) | |
{ | |
printf ("*foop [global]: got %#x, expected %#x\n", foo, MAGIC2); | |
return 1; | |
} | |
foo = *local_foop; | |
if (foo != MAGIC2) | |
{ | |
printf ("*foop [local]: got %#x, expected %#x\n", foo, MAGIC2); | |
return 1; | |
} | |
foo = initial_getfoo (); | |
if (foo != MAGIC2) | |
{ | |
printf ("getfoo [initial]: got %#x, expected %#x\n", foo, MAGIC2); | |
return 1; | |
} | |
foo = global_getfoo (); | |
if (foo != MAGIC2) | |
{ | |
printf ("getfoo [global]: got %#x, expected %#x\n", foo, MAGIC2); | |
return 1; | |
} | |
foo = local_getfoo (); | |
if (foo != MAGIC2) | |
{ | |
printf ("getfoo [local]: got %#x, expected %#x\n", foo, MAGIC2); | |
return 1; | |
} | |
/* Likewise with a change to its state made through the third handle. */ | |
local_setfoo (MAGIC3); | |
foo = *initial_foop; | |
if (foo != MAGIC3) | |
{ | |
printf ("*foop [initial]: got %#x, expected %#x\n", foo, MAGIC3); | |
return 1; | |
} | |
foo = *global_foop; | |
if (foo != MAGIC3) | |
{ | |
printf ("*foop [global]: got %#x, expected %#x\n", foo, MAGIC3); | |
return 1; | |
} | |
foo = *local_foop; | |
if (foo != MAGIC3) | |
{ | |
printf ("*foop [local]: got %#x, expected %#x\n", foo, MAGIC3); | |
return 1; | |
} | |
foo = initial_getfoo (); | |
if (foo != MAGIC3) | |
{ | |
printf ("getfoo [initial]: got %#x, expected %#x\n", foo, MAGIC3); | |
return 1; | |
} | |
foo = global_getfoo (); | |
if (foo != MAGIC3) | |
{ | |
printf ("getfoo [global]: got %#x, expected %#x\n", foo, MAGIC3); | |
return 1; | |
} | |
foo = local_getfoo (); | |
if (foo != MAGIC3) | |
{ | |
printf ("getfoo [local]: got %#x, expected %#x\n", foo, MAGIC3); | |
return 1; | |
} | |
/* All done, clean up. */ | |
initial_getfoo = NULL; | |
initial_setfoo = NULL; | |
initial_foop = NULL; | |
local_getfoo = NULL; | |
local_setfoo = NULL; | |
local_foop = NULL; | |
dlclose (local_handle); | |
global_getfoo = NULL; | |
global_setfoo = NULL; | |
global_foop = NULL; | |
dlclose (global_handle); | |
dlclose (initial_handle); | |
return 0; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |