diff options
Diffstat (limited to 'libexec/ld.elf_so/t_dlclose_thread.c')
| -rw-r--r-- | libexec/ld.elf_so/t_dlclose_thread.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/libexec/ld.elf_so/t_dlclose_thread.c b/libexec/ld.elf_so/t_dlclose_thread.c new file mode 100644 index 000000000000..3b80990c1fec --- /dev/null +++ b/libexec/ld.elf_so/t_dlclose_thread.c @@ -0,0 +1,98 @@ +/* $NetBSD: t_dlclose_thread.c,v 1.1 2025/11/23 22:01:13 riastradh Exp $ */ + +/*- + * Copyright (c) 2025 The NetBSD Foundation, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__RCSID("$NetBSD: t_dlclose_thread.c,v 1.1 2025/11/23 22:01:13 riastradh Exp $"); + +#include <atf-c.h> +#include <dlfcn.h> +#include <pthread.h> +#include <stdatomic.h> +#include <unistd.h> + +#include "h_macros.h" + +pthread_barrier_t bar; +atomic_bool stop = false; + +int sleep_init; +int sleep_fini; +int dlopen_cookie; +int dlclose_cookie; + +static const char *const libh_helper_dso[] = { + "libh_helper_dso1.so", + "libh_helper_dso2.so", + "libh_helper_dso3.so", +}; + +static void * +dlclose_thread(void *cookie) +{ + const unsigned i = (uintptr_t)cookie % __arraycount(libh_helper_dso); + void *handle; + + (void)pthread_barrier_wait(&bar); + while (!atomic_load_explicit(&stop, memory_order_relaxed)) { + handle = dlopen(libh_helper_dso[i], RTLD_LAZY | RTLD_LOCAL); + ATF_REQUIRE(handle != NULL); + dlclose(handle); + } + return NULL; +} + +ATF_TC(dlclose_thread); +ATF_TC_HEAD(dlclose_thread, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Test concurrent dlopen and dlclose with destructors"); +} +ATF_TC_BODY(dlclose_thread, tc) +{ + pthread_t t[2*__arraycount(libh_helper_dso)]; + unsigned i; + + RZ(pthread_barrier_init(&bar, NULL, 1 + __arraycount(t))); + for (i = 0; i < __arraycount(t); i++) { + RZ(pthread_create(&t[i], NULL, &dlclose_thread, + (void *)(uintptr_t)i)); + } + atf_tc_expect_signal(-1, "PR lib/59751:" + " dlclose is not MT-safe depending on the libraries unloaded"); + (void)pthread_barrier_wait(&bar); + (void)sleep(1); + atomic_store_explicit(&stop, true, memory_order_relaxed); + for (i = 0; i < __arraycount(t); i++) + RZ(pthread_join(t[i], NULL)); +} + +ATF_TP_ADD_TCS(tp) +{ + ATF_TP_ADD_TC(tp, dlclose_thread); + return atf_no_error(); +} |