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https://sourceware.org/git/glibc.git
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95129e6b8f
This reverts commit 9897ced8e7.
Adjust the test expectations in elf/tst-dlopen-auditdup-auditmod.c
accordingly.
105 lines
3.2 KiB
C
105 lines
3.2 KiB
C
/* Auditor that opens again an object that just has been opened.
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Copyright (C) 2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <dlfcn.h>
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#include <link.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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unsigned int
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la_version (unsigned int v)
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{
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return LAV_CURRENT;
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}
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static bool trigger_on_la_activity;
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unsigned int
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la_objopen (struct link_map *map, Lmid_t lmid, uintptr_t *cookie)
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{
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printf ("info: la_objopen: \"%s\"\n", map->l_name);
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if (strstr (map->l_name, "/tst-dlopen-auditdupmod.so") != NULL)
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trigger_on_la_activity = true;
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return 0;
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}
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void
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la_activity (uintptr_t *cookie, unsigned int flag)
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{
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static unsigned int calls;
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++calls;
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printf ("info: la_activity: call %u (flag %u)\n", calls, flag);
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fflush (stdout);
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if (trigger_on_la_activity)
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{
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/* Avoid triggering on the dlmopen call below. */
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static bool recursion;
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if (recursion)
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return;
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recursion = true;
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puts ("info: about to dlmopen tst-dlopen-auditdupmod.so");
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fflush (stdout);
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void *handle = dlmopen (LM_ID_BASE, "tst-dlopen-auditdupmod.so",
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RTLD_NOW);
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if (handle == NULL)
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{
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printf ("error: dlmopen: %s\n", dlerror ());
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fflush (stdout);
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_exit (1);
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}
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/* Check that the constructor has not run. Running the
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constructor would require constructing its dependencies, but
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the constructor call that triggered this auditing activity
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has not completed, and constructors among the dependencies
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may not be able to deal with that. */
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int *status = dlsym (handle, "auditdupmod_status");
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if (status == NULL)
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{
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printf ("error: dlsym: %s\n", dlerror ());
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fflush (stdout);
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_exit (1);
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}
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printf ("info: auditdupmod_status == %d\n", *status);
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if (*status != 0)
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{
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puts ("error: auditdupmod_status == 0 expected");
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fflush (stdout);
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_exit (1);
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}
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/* Checked in the destructor and the main program. */
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++*status;
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printf ("info: auditdupmod_status == %d\n", *status);
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/* Check that the module has been relocated. */
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int **status_address = dlsym (handle, "auditdupmod_status_address");
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if (status_address == NULL || *status_address != status)
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{
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puts ("error: invalid auditdupmod_status address in"
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" tst-dlopen-auditdupmod.so");
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fflush (stdout);
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_exit (1);
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}
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fflush (stdout);
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}
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}
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