mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-27 05:00:15 +00:00
276 lines
8.1 KiB
C
276 lines
8.1 KiB
C
/* _dl_find_object test with parallelism.
|
|
Copyright (C) 2021-2024 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <array_length.h>
|
|
#include <dlfcn.h>
|
|
#include <elf/dl-find_object.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <support/check.h>
|
|
#include <support/support.h>
|
|
#include <support/xdlfcn.h>
|
|
#include <support/xthread.h>
|
|
#include <support/xunistd.h>
|
|
|
|
/* Computes the expected _dl_find_object result directly from the
|
|
map. */
|
|
static void
|
|
from_map (struct link_map *l, struct dl_find_object *expected)
|
|
{
|
|
struct dl_find_object_internal internal;
|
|
_dl_find_object_from_map (l, &internal);
|
|
_dl_find_object_to_external (&internal, expected);
|
|
}
|
|
|
|
/* Returns the soname for the test object NUMBER. */
|
|
static char *
|
|
soname (int number)
|
|
{
|
|
return xasprintf ("tst-dl_find_object-mod%d.so", number);
|
|
}
|
|
|
|
/* Returns the data symbol name for the test object NUMBER. */
|
|
static char *
|
|
symbol (int number)
|
|
{
|
|
return xasprintf ("mod%d_data", number);
|
|
}
|
|
|
|
struct verify_data
|
|
{
|
|
char *soname;
|
|
void *address; /* Address in the shared object. */
|
|
struct dl_find_object dlfo;
|
|
pthread_t thr;
|
|
};
|
|
|
|
/* Compare _dl_find_object result at ADDRESS with *EXPECTED. */
|
|
static void
|
|
check (void *address, struct dl_find_object *expected, int line)
|
|
{
|
|
struct dl_find_object actual;
|
|
int ret = _dl_find_object (address, &actual);
|
|
if (expected == NULL)
|
|
{
|
|
if (ret != -1)
|
|
{
|
|
support_record_failure ();
|
|
printf ("%s:%d: unexpected success for %p\n",
|
|
__FILE__, line, address);
|
|
}
|
|
return;
|
|
}
|
|
if (ret != 0)
|
|
{
|
|
support_record_failure ();
|
|
printf ("%s:%d: unexpected failure for %p\n",
|
|
__FILE__, line, address);
|
|
return;
|
|
}
|
|
|
|
if (actual.dlfo_flags != expected->dlfo_flags)
|
|
{
|
|
support_record_failure ();
|
|
printf ("%s:%d: error: %p: flags is %llu, expected %llu\n",
|
|
__FILE__, line, address,
|
|
actual.dlfo_flags, expected->dlfo_flags);
|
|
}
|
|
if (actual.dlfo_flags != expected->dlfo_flags)
|
|
{
|
|
support_record_failure ();
|
|
printf ("%s:%d: error: %p: map start is %p, expected %p\n",
|
|
__FILE__, line,
|
|
address, actual.dlfo_map_start, expected->dlfo_map_start);
|
|
}
|
|
if (actual.dlfo_map_end != expected->dlfo_map_end)
|
|
{
|
|
support_record_failure ();
|
|
printf ("%s:%d: error: %p: map end is %p, expected %p\n",
|
|
__FILE__, line,
|
|
address, actual.dlfo_map_end, expected->dlfo_map_end);
|
|
}
|
|
if (actual.dlfo_link_map != expected->dlfo_link_map)
|
|
{
|
|
support_record_failure ();
|
|
printf ("%s:%d: error: %p: link map is %p, expected %p\n",
|
|
__FILE__, line,
|
|
address, actual.dlfo_link_map, expected->dlfo_link_map);
|
|
}
|
|
if (actual.dlfo_eh_frame != expected->dlfo_eh_frame)
|
|
{
|
|
support_record_failure ();
|
|
printf ("%s:%d: error: %p: EH frame is %p, expected %p\n",
|
|
__FILE__, line,
|
|
address, actual.dlfo_eh_frame, expected->dlfo_eh_frame);
|
|
}
|
|
#if DLFO_STRUCT_HAS_EH_DBASE
|
|
if (actual.dlfo_eh_dbase != expected->dlfo_eh_dbase)
|
|
{
|
|
support_record_failure ();
|
|
printf ("%s:%d: error: %p: data base is %p, expected %p\n",
|
|
__FILE__, line,
|
|
address, actual.dlfo_eh_dbase, expected->dlfo_eh_dbase);
|
|
}
|
|
#endif
|
|
#if DLFO_STRUCT_HAS_EH_COUNT
|
|
if (actual.dlfo_eh_count != expected->dlfo_eh_count)
|
|
{
|
|
support_record_failure ();
|
|
printf ("%s:%d: error: %p: count is %d, expected %d\n",
|
|
__FILE__, line,
|
|
address, actual.dlfo_eh_count, expected->dlfo_eh_count);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* Request process termination after 0.3 seconds. */
|
|
static bool exit_requested;
|
|
static void *
|
|
exit_thread (void *ignored)
|
|
{
|
|
usleep (300 * 1000);
|
|
__atomic_store_n (&exit_requested, true, __ATOMIC_RELAXED);
|
|
return NULL;
|
|
}
|
|
|
|
static void *
|
|
verify_thread (void *closure)
|
|
{
|
|
struct verify_data *data = closure;
|
|
|
|
while (!__atomic_load_n (&exit_requested, __ATOMIC_RELAXED))
|
|
{
|
|
check (data->address, &data->dlfo, __LINE__);
|
|
check (data->dlfo.dlfo_map_start, &data->dlfo, __LINE__);
|
|
check (data->dlfo.dlfo_map_end - 1, &data->dlfo, __LINE__);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Sets up the verification data, dlopen'ing shared object NUMBER, and
|
|
launches a verification thread. */
|
|
static void
|
|
start_verify (int number, struct verify_data *data)
|
|
{
|
|
data->soname = soname (number);
|
|
struct link_map *l = xdlopen (data->soname, RTLD_NOW);
|
|
from_map (l, &data->dlfo);
|
|
TEST_VERIFY_EXIT (data->dlfo.dlfo_link_map == l);
|
|
char *sym = symbol (number);
|
|
data->address = xdlsym (data->dlfo.dlfo_link_map, sym);
|
|
free (sym);
|
|
data->thr = xpthread_create (NULL, verify_thread, data);
|
|
}
|
|
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
struct verify_data data_mod2;
|
|
struct verify_data data_mod4;
|
|
struct verify_data data_mod7;
|
|
|
|
/* Load the modules with gaps. */
|
|
{
|
|
void *mod1 = xdlopen ("tst-dl_find_object-mod1.so", RTLD_NOW);
|
|
start_verify (2, &data_mod2);
|
|
void *mod3 = xdlopen ("tst-dl_find_object-mod3.so", RTLD_NOW);
|
|
start_verify (4, &data_mod4);
|
|
void *mod5 = xdlopen ("tst-dl_find_object-mod5.so", RTLD_NOW);
|
|
void *mod6 = xdlopen ("tst-dl_find_object-mod6.so", RTLD_NOW);
|
|
start_verify (7, &data_mod7);
|
|
xdlclose (mod6);
|
|
xdlclose (mod5);
|
|
xdlclose (mod3);
|
|
xdlclose (mod1);
|
|
}
|
|
|
|
/* Objects that continuously opened and closed. */
|
|
struct temp_object
|
|
{
|
|
char *soname;
|
|
char *symbol;
|
|
struct link_map *link_map;
|
|
void *address;
|
|
} temp_objects[] =
|
|
{
|
|
{ soname (1), symbol (1), },
|
|
{ soname (3), symbol (3), },
|
|
{ soname (5), symbol (5), },
|
|
{ soname (6), symbol (6), },
|
|
{ soname (8), symbol (8), },
|
|
{ soname (9), symbol (9), },
|
|
};
|
|
|
|
pthread_t exit_thr = xpthread_create (NULL, exit_thread, NULL);
|
|
|
|
struct drand48_data state;
|
|
srand48_r (1, &state);
|
|
while (!__atomic_load_n (&exit_requested, __ATOMIC_RELAXED))
|
|
{
|
|
long int idx;
|
|
lrand48_r (&state, &idx);
|
|
idx %= array_length (temp_objects);
|
|
if (temp_objects[idx].link_map == NULL)
|
|
{
|
|
temp_objects[idx].link_map = xdlopen (temp_objects[idx].soname,
|
|
RTLD_NOW);
|
|
temp_objects[idx].address = xdlsym (temp_objects[idx].link_map,
|
|
temp_objects[idx].symbol);
|
|
}
|
|
else
|
|
{
|
|
xdlclose (temp_objects[idx].link_map);
|
|
temp_objects[idx].link_map = NULL;
|
|
struct dl_find_object dlfo;
|
|
int ret = _dl_find_object (temp_objects[idx].address, &dlfo);
|
|
if (ret != -1)
|
|
{
|
|
TEST_VERIFY_EXIT (ret == 0);
|
|
support_record_failure ();
|
|
printf ("%s: error: %s EH found after dlclose, link map %p\n",
|
|
__FILE__, temp_objects[idx].soname, dlfo.dlfo_link_map);
|
|
}
|
|
}
|
|
}
|
|
|
|
xpthread_join (data_mod2.thr);
|
|
xpthread_join (data_mod4.thr);
|
|
xpthread_join (data_mod7.thr);
|
|
xpthread_join (exit_thr);
|
|
|
|
for (size_t i = 0; i < array_length (temp_objects); ++i)
|
|
{
|
|
free (temp_objects[i].soname);
|
|
free (temp_objects[i].symbol);
|
|
if (temp_objects[i].link_map != NULL)
|
|
xdlclose (temp_objects[i].link_map);
|
|
}
|
|
|
|
free (data_mod2.soname);
|
|
free (data_mod4.soname);
|
|
xdlclose (data_mod4.dlfo.dlfo_link_map);
|
|
free (data_mod7.soname);
|
|
xdlclose (data_mod7.dlfo.dlfo_link_map);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|