mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-21 20:40:05 +00:00
72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
/* Test dlopen rollback after failures involving NODELETE objects (bug 20839).
|
|
Copyright (C) 2019-2024 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 <dlfcn.h>
|
|
#include <errno.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <support/check.h>
|
|
#include <support/xdlfcn.h>
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
TEST_VERIFY (dlsym (NULL, "no_delete_mod_function") == NULL);
|
|
|
|
/* This is expected to fail because of the missing dependency. */
|
|
puts ("info: attempting to load tst-dlopenfailmod1.so");
|
|
TEST_VERIFY (dlopen ("tst-dlopenfailmod1.so", RTLD_LAZY) == NULL);
|
|
const char *message = dlerror ();
|
|
TEST_COMPARE_STRING (message,
|
|
"tst-dlopenfail-missingmod.so:"
|
|
" cannot open shared object file:"
|
|
" No such file or directory");
|
|
|
|
/* Do not probe for the presence of the tst-dlopenfailnodelmod.so at
|
|
this point because that might trigger relocation if bug 20839 is
|
|
present, obscuring a subsequent crash. */
|
|
|
|
/* This is expected to succeed. */
|
|
puts ("info: loading tst-dlopenfailmod2.so");
|
|
void *handle = xdlopen ("tst-dlopenfailmod2.so", RTLD_NOW);
|
|
xdlclose (handle);
|
|
|
|
/* The NODELETE module should remain loaded. */
|
|
TEST_VERIFY (dlopen ("tst-dlopenfailnodelmod.so", RTLD_LAZY | RTLD_NOLOAD)
|
|
!= NULL);
|
|
/* But the symbol is not in the global scope. */
|
|
TEST_VERIFY (dlsym (NULL, "no_delete_mod_function") == NULL);
|
|
|
|
/* We can make tst-dlopenfailnodelmod.so global, and then the symbol
|
|
should become available. */
|
|
TEST_VERIFY (dlopen ("tst-dlopenfailnodelmod.so", RTLD_LAZY | RTLD_GLOBAL)
|
|
!= NULL);
|
|
void (*no_delete_mod_function) (void)
|
|
= dlsym (NULL, "no_delete_mod_function");
|
|
TEST_VERIFY_EXIT (no_delete_mod_function != NULL);
|
|
|
|
/* Hopefully, no_delete_mod_function is sufficiently complex to
|
|
depend on relocations. */
|
|
no_delete_mod_function ();
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|