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glibc/elf/tst-tls-dlinfo.c
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#include <dlfcn.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#define TEST_FUNCTION do_test () | |
static int | |
do_test (void) | |
{ | |
static const char modname[] = "tst-tlsmod2.so"; | |
int result = 0; | |
int *foop; | |
int (*fp) (int, int *); | |
void *h; | |
h = dlopen (modname, RTLD_LAZY); | |
if (h == NULL) | |
{ | |
printf ("cannot open '%s': %s\n", modname, dlerror ()); | |
exit (1); | |
} | |
fp = dlsym (h, "in_dso"); | |
if (fp == NULL) | |
{ | |
printf ("cannot get symbol 'in_dso': %s\n", dlerror ()); | |
exit (1); | |
} | |
size_t modid = -1; | |
if (dlinfo (h, RTLD_DI_TLS_MODID, &modid)) | |
{ | |
printf ("dlinfo RTLD_DI_TLS_MODID failed: %s\n", dlerror ()); | |
result = 1; | |
} | |
else | |
printf ("dlinfo says TLS module ID %Zu\n", modid); | |
void *block; | |
if (dlinfo (h, RTLD_DI_TLS_DATA, &block)) | |
{ | |
printf ("dlinfo RTLD_DI_TLS_DATA failed: %s\n", dlerror ()); | |
result = 1; | |
} | |
else if (block != NULL) | |
{ | |
printf ("dlinfo RTLD_DI_TLS_DATA says %p but should be unallocated\n", | |
block); | |
result = 1; | |
} | |
result |= fp (0, NULL); | |
foop = dlsym (h, "foo"); | |
if (foop == NULL) | |
{ | |
printf ("cannot get symbol 'foo' the second time: %s\n", dlerror ()); | |
exit (1); | |
} | |
if (*foop != 16) | |
{ | |
puts ("foo != 16"); | |
result = 1; | |
} | |
/* Now the module's TLS block has been used and should appear. */ | |
if (dlinfo (h, RTLD_DI_TLS_DATA, &block)) | |
{ | |
printf ("dlinfo RTLD_DI_TLS_DATA failed the second time: %s\n", | |
dlerror ()); | |
result = 1; | |
} | |
else if (block != foop) | |
{ | |
printf ("dlinfo RTLD_DI_TLS_DATA says %p but should be %p\n", | |
block, foop); | |
result = 1; | |
} | |
dlclose (h); | |
return result; | |
} | |
#include "../test-skeleton.c" |