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Meson doesn't use .libs directory, everything is placed directly into directories where meson.build file is used. In order to have working tests and running libvirt directly from GIT we need to fix all the paths pointing '.libs' directory. Signed-off-by: Pavel Hrdina <phrdina@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com> Reviewed-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Neal Gompa <ngompa13@gmail.com>
160 lines
4.2 KiB
C
160 lines
4.2 KiB
C
/*
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* Copyright (C) 2011, 2013 Red Hat, Inc.
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*
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* This 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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*
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* This 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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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*/
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/*
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* When libvirt initializes, it creates a thread local for storing
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* the last virErrorPtr instance. It also registers a cleanup
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* callback for the thread local that will be invoked whenever
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* a thread exits.
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*
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* If the libvirt.so library was dlopen()'d and is dlclose()'d
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* while there is still a thread present, then when that thread
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* later exits, the libvirt cleanup callback will be invoked.
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* Unfortunately libvirt.so will no longer be in memory so the
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* callback SEGVs (if you're lucky), or invokes unlreated
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* code at the same address as the old callback (if you're
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* unlucky).
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*
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* To fix the problem libvirt is linked '-z nodelete' which
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* prevents the code being removed from memory at dlclose().
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*
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* This test case demonstrates this SEGV scenario. If this
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* test does not SEGV, then the '-z nodelete' fix is working
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*/
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#include <config.h>
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#define VIR_NO_GLIB_STDIO /* This file intentionally does not link to libvirt/glib */
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#include "testutils.h"
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#ifdef linux
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# include <dlfcn.h>
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# include <pthread.h>
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# include <unistd.h>
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# include <signal.h>
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# include "internal.h"
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pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
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pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
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bool running = false;
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bool failstart = false;
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bool quit = false;
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static void *threadMain(void *arg)
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{
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int (*startup)(void) = arg;
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if (startup() < 0) {
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pthread_mutex_lock(&lock);
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failstart = true;
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pthread_cond_signal(&cond);
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} else {
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pthread_mutex_lock(&lock);
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running = true;
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pthread_cond_signal(&cond);
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}
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while (!quit)
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pthread_cond_wait(&cond, &lock);
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pthread_mutex_unlock(&lock);
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return NULL;
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}
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static void sigHandler(int sig)
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{
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ignore_value(write(STDERR_FILENO, "FAIL\n", 5));
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signal(sig, SIG_DFL);
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raise(sig);
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}
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/* We're not using the testutils.c main() wrapper because
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* we don't want 'shunloadtest' itself to link against
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* libvirt.so. We need to test dlopen()'ing of libvirt.so
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*/
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int main(int argc G_GNUC_UNUSED, char **argv)
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{
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void (*startup)(void);
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pthread_t t;
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void *lib;
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char *theprogname;
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theprogname = argv[0];
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if (STRPREFIX(theprogname, "./"))
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theprogname += 2;
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fprintf(stderr, "TEST: %s\n", theprogname);
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fprintf(stderr, " .%*s 1 ", 39, "");
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signal(SIGSEGV, sigHandler);
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if (!(lib = dlopen(abs_builddir "/libshunload.so", RTLD_LAZY))) {
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fprintf(stderr, "Cannot load ./libshunload.so %s\n", dlerror());
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return 1;
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}
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if (!(startup = dlsym(lib, "shunloadStart"))) {
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fprintf(stderr, "Cannot find shunloadStart %s\n", dlerror());
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dlclose(lib);
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return 1;
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}
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/*
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* Create a thread which is going to initialize libvirt
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* and raise an error
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*/
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pthread_create(&t, NULL, threadMain, startup);
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/* Wait for the thread to start and call libvirt */
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pthread_mutex_lock(&lock);
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while (!running && !failstart)
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pthread_cond_wait(&cond, &lock);
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/* Close the shared library (and thus make libvirt.so
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* non-resident */
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dlclose(lib);
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/* Tell the thread to quit */
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quit = true;
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pthread_cond_signal(&cond);
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pthread_mutex_unlock(&lock);
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pthread_join(t, NULL);
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/* If we got to here the thread successfully exited without
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* causing a SEGV !
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*/
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if (failstart)
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fprintf(stderr, "FAIL to initialize libvirt\n");
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else
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fprintf(stderr, "OK\n");
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return 0;
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}
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#else
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int main(void)
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{
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return EXIT_AM_SKIP;
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}
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#endif
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