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glibc/elf/reldep6.c
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#include <dlfcn.h> | |
#include <mcheck.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
typedef int (*fn)(void); | |
#define CHUNKS 1024 | |
#define REPEAT 64 | |
int | |
main (void) | |
{ | |
void *h1; | |
void *h2; | |
fn **foopp; | |
fn bar, baz; | |
int i, j; | |
int n; | |
void *allocs[REPEAT][CHUNKS]; | |
mtrace (); | |
/* Open the two objects. */ | |
h1 = dlopen ("reldep6mod3.so", RTLD_LAZY); | |
if (h1 == NULL) | |
{ | |
printf ("cannot open reldep6mod3.so: %s\n", dlerror ()); | |
exit (1); | |
} | |
foopp = dlsym (h1, "foopp"); | |
if (foopp == NULL) | |
{ | |
printf ("cannot get address of \"foopp\": %s\n", dlerror ()); | |
exit (1); | |
} | |
n = (**foopp) (); | |
if (n != 20) | |
{ | |
printf ("(**foopp)() return %d, not return 20\n", n); | |
exit (1); | |
} | |
h2 = dlopen ("reldep6mod4.so", RTLD_LAZY); | |
if (h2 == NULL) | |
{ | |
printf ("cannot open reldep6mod4.so: %s\n", dlerror ()); | |
exit (1); | |
} | |
if (dlclose (h1) != 0) | |
{ | |
printf ("closing h1 failed: %s\n", dlerror ()); | |
exit (1); | |
} | |
/* Clobber memory. */ | |
for (i = 0; i < REPEAT; ++i) | |
for (j = 0; j < CHUNKS; ++j) | |
allocs[i][j] = calloc (1, j + 1); | |
bar = dlsym (h2, "bar"); | |
if (bar == NULL) | |
{ | |
printf ("cannot get address of \"bar\": %s\n", dlerror ()); | |
exit (1); | |
} | |
if (bar () != 40) | |
{ | |
printf ("bar() did not return 40\n"); | |
exit (1); | |
} | |
baz = dlsym (h2, "baz"); | |
if (baz == NULL) | |
{ | |
printf ("cannot get address of \"baz\": %s\n", dlerror ()); | |
exit (1); | |
} | |
if (baz () != 31) | |
{ | |
printf ("baz() did not return 31\n"); | |
exit (1); | |
} | |
for (i = 0; i < REPEAT; ++i) | |
for (j = 0; j < CHUNKS; ++j) | |
free (allocs[i][j]); | |
if (dlclose (h2) != 0) | |
{ | |
printf ("closing h2 failed: %s\n", dlerror ()); | |
exit (1); | |
} | |
return 0; | |
} |