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Revert "elf: Run constructors on cyclic recursive dlopen (bug 31986)"

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This reverts commit 9897ced8e7.

Adjust the test expectations in elf/tst-dlopen-auditdup-auditmod.c
accordingly.
This commit is contained in:
Florian Weimer 2024-10-28 14:45:30 +01:00
parent 0a536f6e2f
commit 95129e6b8f
7 changed files with 7 additions and 167 deletions
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5
elf/Makefile
View File

@ -415,7 +415,6 @@ tests += \
tst-dlmopen3 \
tst-dlmopen4 \
tst-dlopen-auditdup \
tst-dlopen-recurse \
tst-dlopen-self \
tst-dlopen-tlsmodid \
tst-dlopen-tlsreinit1 \
@ -869,8 +868,6 @@ modules-names += \
tst-dlmopen1mod \
tst-dlopen-auditdup-auditmod \
tst-dlopen-auditdupmod \
tst-dlopen-recursemod1 \
tst-dlopen-recursemod2 \
tst-dlopen-tlsreinitmod1 \
tst-dlopen-tlsreinitmod2 \
tst-dlopen-tlsreinitmod3 \
@ -3160,8 +3157,6 @@ tst-dlopen-tlsreinit3-ENV = LD_AUDIT=$(objpfx)tst-auditmod1.so
$(objpfx)tst-dlopen-tlsreinit4.out: $(objpfx)tst-auditmod1.so
tst-dlopen-tlsreinit4-ENV = LD_AUDIT=$(objpfx)tst-auditmod1.so
$(objpfx)tst-dlopen-recurse.out: $(objpfx)tst-dlopen-recursemod1.so
$(objpfx)tst-dlopen-recursemod1.so: $(objpfx)tst-dlopen-recursemod2.so
tst-dlopen-auditdup-ENV = LD_AUDIT=$(objpfx)tst-dlopen-auditdup-auditmod.so
$(objpfx)tst-dlopen-auditdup.out: \
$(objpfx)tst-dlopen-auditdupmod.so $(objpfx)tst-dlopen-auditdup-auditmod.so

8
elf/dl-open.c
View File

@ -594,14 +594,6 @@ dl_open_worker_begin (void *a)
if ((mode & RTLD_GLOBAL) && new->l_global == 0)
add_to_global_update (new);
/* Do not return without calling the (supposedly new) map's
constructor. This case occurs if a dependency of a directly
opened map has a constructor that calls dlopen again on the
initially opened map. The new map is initialized last, so
checking only it is enough. */
if (!new->l_init_called)
_dl_catch_exception (NULL, call_dl_init, args);
return;
}

1
elf/dl-support.c
View File

@ -99,7 +99,6 @@ static struct link_map _dl_main_map =
.l_used = 1,
.l_tls_offset = NO_TLS_OFFSET,
.l_serial = 1,
.l_init_called = 1,
};
/* Namespace information. */

10
elf/tst-dlopen-auditdup-auditmod.c
View File

@ -66,7 +66,11 @@ la_activity (uintptr_t *cookie, unsigned int flag)
_exit (1);
}
/* Check that the constructor has run. */
/* Check that the constructor has not run. Running the
constructor would require constructing its dependencies, but
the constructor call that triggered this auditing activity
has not completed, and constructors among the dependencies
may not be able to deal with that. */
int *status = dlsym (handle, "auditdupmod_status");
if (status == NULL)
{
@ -75,9 +79,9 @@ la_activity (uintptr_t *cookie, unsigned int flag)
_exit (1);
}
printf ("info: auditdupmod_status == %d\n", *status);
if (*status != 1)
if (*status != 0)
{
puts ("error: auditdupmod_status == 1 expected");
puts ("error: auditdupmod_status == 0 expected");
fflush (stdout);
_exit (1);
}

34
elf/tst-dlopen-recurse.c
View File

@ -1,34 +0,0 @@
/* Test that recursive dlopen runs constructors before return (bug 31986).
Copyright (C) 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 <stdio.h>
#include <support/check.h>
#include <support/xdlfcn.h>
static int
do_test (void)
{
void *handle = xdlopen ("tst-dlopen-recursemod1.so", RTLD_NOW);
int *status = dlsym (handle, "recursemod1_status");
printf ("info: recursemod1_status == %d (from main)\n", *status);
TEST_COMPARE (*status, 2);
xdlclose (handle);
return 0;
}
#include <support/test-driver.c>

50
elf/tst-dlopen-recursemod1.c
View File

@ -1,50 +0,0 @@
/* Directly opened test module that gets recursively opened again.
Copyright (C) 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 <stdio.h>
#include <stdlib.h>
#include <support/xdlfcn.h>
int recursemod1_status;
/* Force linking against st-dlopen-recursemod2.so. Also allows
checking for relocation. */
extern int recursemod2_status;
int *force_recursemod2_reference = &recursemod2_status;
static void __attribute__ ((constructor))
init (void)
{
++recursemod1_status;
printf ("info: tst-dlopen-recursemod1.so constructor called (status %d)\n",
recursemod1_status);
}
static void __attribute__ ((destructor))
fini (void)
{
/* The recursemod1_status variable was incremented in the
tst-dlopen-recursemod2.so constructor. */
printf ("info: tst-dlopen-recursemod1.so destructor called (status %d)\n",
recursemod1_status);
if (recursemod1_status != 2)
{
puts ("error: recursemod1_status == 2 expected");
exit (1);
}
}

66
elf/tst-dlopen-recursemod2.c
View File

@ -1,66 +0,0 @@
/* Indirectly opened module that recursively opens the directly opened module.
Copyright (C) 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 <stdio.h>
#include <stdlib.h>
int recursemod2_status;
static void __attribute__ ((constructor))
init (void)
{
++recursemod2_status;
printf ("info: tst-dlopen-recursemod2.so constructor called (status %d)\n",
recursemod2_status);
void *handle = dlopen ("tst-dlopen-recursemod1.so", RTLD_NOW);
if (handle == NULL)
{
printf ("error: dlopen: %s\n", dlerror ());
exit (1);
}
int *status = dlsym (handle, "recursemod1_status");
if (status == NULL)
{
printf ("error: dlsym: %s\n", dlerror ());
exit (1);
}
printf ("info: recursemod1_status == %d\n", *status);
if (*status != 1)
{
puts ("error: recursemod1_status == 1 expected");
exit (1);
}
++*status;
printf ("info: recursemod1_status == %d\n", *status);
int **mod2_status = dlsym (handle, "force_recursemod2_reference");
if (mod2_status == NULL || *mod2_status != &recursemod2_status)
{
puts ("error: invalid recursemod2_status address in"
" tst-dlopen-recursemod1.so");
exit (1);
}
}
static void __attribute__ ((destructor))
fini (void)
{
printf ("info: tst-dlopen-recursemod2.so destructor called (status %d)\n",
recursemod2_status);
}