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glibc/elf/tst-audit2.c
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/* Test case for early TLS initialization in dynamic linker. */ | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#include <dlfcn.h> | |
#define MAGIC1 0xabcdef72 | |
#define MAGIC2 0xd8675309 | |
static __thread unsigned int magic[] = { MAGIC1, MAGIC2 }; | |
static __thread int calloc_called; | |
#undef calloc | |
/* This calloc definition will be called by the dynamic linker itself. | |
We test that interposed calloc is called by the dynamic loader, and | |
that TLS is fully initialized by then. */ | |
void * | |
calloc (size_t n, size_t m) | |
{ | |
if (!calloc_called) | |
{ | |
/* Allow our calloc to be called more than once. */ | |
calloc_called = 1; | |
if (magic[0] != MAGIC1 || magic[1] != MAGIC2) | |
{ | |
printf ("{%x, %x} != {%x, %x}\n", | |
magic[0], magic[1], MAGIC1, MAGIC2); | |
abort (); | |
} | |
magic[0] = MAGIC2; | |
magic[1] = MAGIC1; | |
} | |
n *= m; | |
void *ptr = malloc (n); | |
if (ptr != NULL) | |
memset (ptr, '\0', n); | |
return ptr; | |
} | |
static int | |
do_test (void) | |
{ | |
/* Make sure that our calloc is called from the dynamic linker at least | |
once. */ | |
void *h = dlopen("$ORIGIN/tst-auditmod9b.so", RTLD_LAZY); | |
if (h != NULL) | |
dlclose (h); | |
if (magic[1] != MAGIC1 || magic[0] != MAGIC2) | |
{ | |
printf ("{%x, %x} != {%x, %x}\n", magic[0], magic[1], MAGIC2, MAGIC1); | |
return 1; | |
} | |
return 0; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |