--- /dev/null
+AM_CPPFLAGS = -I$(srcdir) -g
+
+noinst_PROGRAMS = prog
+prog_SOURCES = prog.c
+prog_LDADD = -ldl
+
+noinst_LTLIBRARIES = libfoo.la
+libfoo_la_SOURCES = libfoo.c libfoo.h
+libfoo_la_LDFLAGS = -module -shared -avoid-version \
+ -rpath $(abs_builddir)
+
+noinst_SCRIPTS = test_ust-dl test_ust-dl.py
+EXTRA_DIST = test_ust-dl test_ust-dl.py
+
+all-local: libfoo.la
+ @if [ x"$(srcdir)" != x"$(builddir)" ]; then \
+ for script in $(EXTRA_DIST); do \
+ cp -f $(srcdir)/$$script $(builddir); \
+ done; \
+ fi
+ objcopy --only-keep-debug .libs/libfoo.so .libs/libfoo.so.debug
+ strip -g .libs/libfoo.so
+ objcopy --add-gnu-debuglink .libs/libfoo.so.debug .libs/libfoo.so
+
+clean-local:
+ @if [ x"$(srcdir)" != x"$(builddir)" ]; then \
+ for script in $(EXTRA_DIST); do \
+ rm -f $(builddir)/$$script; \
+ done; \
+ fi
+ rm -f .libs/libfoo.so.debug
--- /dev/null
+UST dynamic linker tracing test
+-------------------------------
+
+This test verifies that the `liblttng-ust-dl.so` helper works as
+intended. Indeed, once preloaded, this helper should produce events
+for all calls made by the application to dlopen along with with extra
+debug information for the given shared object, such as build id or
+debug link if it exists, as well as dlclose.
+
+
+DESCRIPTION
+-----------
+
+The test application is run with the environment variable
+LD_PRELOAD="liblttng-ust-dl.so" to preload the helper. It then dlopens
+a shared library (`libfoo.so`), calls a function from it, and dlclose
+it. This should produce `dlopen` and `dlclose` events, as well as
+`build_id` and `debug_link`, because the shared library has been built
+to contain all this extra debug information.
+
+DEPENDENCIES
+------------
+
+To run this test, you will need:
+
+ - lttng-tools (with python bindings)
+ - babeltrace
+ - python 3.0 or later
--- /dev/null
+#!/bin/sh
+#
+# Copyright (C) - 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License, version 2 only, as
+# published by the Free Software Foundation.
+#
+# This program 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 General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc., 51
+# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+CURDIR=$(dirname $0)
+TESTDIR=${CURDIR}/../../..
+
+source $TESTDIR/utils/utils.sh
+
+start_lttng_sessiond_notap
+
+python3 ${CURDIR}/test_ust-dl.py
+
+stop_lttng_sessiond_notap
--- /dev/null
+#!/usr/bin/env python3
+#
+# Copyright (C) - 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+# Copyright (C) - 2015 Antoine Busque <abusque@efficios.com>
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License, version 2 only, as
+# published by the Free Software Foundation.
+#
+# This program 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 General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc., 51
+# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import os
+import subprocess
+import re
+import shutil
+import sys
+
+test_path = os.path.dirname(os.path.abspath(__file__)) + "/"
+test_utils_path = test_path
+for i in range(4):
+ test_utils_path = os.path.dirname(test_utils_path)
+test_utils_path = test_utils_path + "/utils"
+sys.path.append(test_utils_path)
+from test_utils import *
+
+
+NR_TESTS = 6
+current_test = 1
+print("1..{0}".format(NR_TESTS))
+
+# Check if a sessiond is running... bail out if none found.
+if session_daemon_alive() == 0:
+ bail("""No sessiond running. Please make sure you are running this test
+ with the "run" shell script and verify that the lttng tools are
+ properly installed.""")
+
+session_info = create_session()
+enable_ust_tracepoint_event(session_info, "*")
+start_session(session_info)
+
+test_env = os.environ.copy()
+test_env["LD_PRELOAD"] = "liblttng-ust-dl.so"
+test_env["LD_LIBRARY_PATH"] = test_path + ".libs/"
+test_process = subprocess.Popen(test_path + "prog",
+ stdout=subprocess.PIPE, stderr=subprocess.PIPE,
+ env=test_env)
+
+if sys.version_info >= (3, 3):
+ try:
+ test_process.wait(5)
+ except subprocess.TimeoutExpired:
+ test_process.kill()
+ bail("Failed to run ust-dl test application.", session_info)
+else:
+ test_process.wait()
+
+print_test_result(test_process.returncode == 0, current_test, "Test application exited normally")
+current_test += 1
+
+stop_session(session_info)
+
+# Check for dl events in the resulting trace
+try:
+ babeltrace_process = subprocess.Popen(["babeltrace", session_info.trace_path], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+except FileNotFoundError:
+ bail("Could not open babeltrace. Please make sure it is installed.", session_info)
+
+dlopen_event_found = False
+build_id_event_found = False
+debug_link_event_found = False
+dlclose_event_found = False
+
+for event_line in babeltrace_process.stdout:
+ # Let babeltrace finish to get the return code
+ if dlopen_event_found and build_id_event_found and \
+ debug_link_event_found and dlclose_event_found:
+ continue
+
+ event_line = event_line.decode('utf-8').replace("\n", "")
+ if re.search(r".*lttng_ust_dl:dlopen.*", event_line) is not None:
+ dlopen_event_found = True
+ elif re.search(r".*lttng_ust_dl:build_id.*", event_line) is not None:
+ build_id_event_found = True
+ elif re.search(r".*lttng_ust_dl:debug_link.*", event_line) is not None:
+ debug_link_event_found = True
+ elif re.search(r".*lttng_ust_dl:dlclose.*", event_line) is not None:
+ dlclose_event_found = True
+
+babeltrace_process.wait()
+
+print_test_result(babeltrace_process.returncode == 0, current_test, "Resulting trace is readable")
+current_test += 1
+
+print_test_result(dlopen_event_found, current_test, "lttng_ust_dl:dlopen event found in resulting trace")
+current_test += 1
+
+print_test_result(build_id_event_found, current_test, "lttng_ust_dl:build_id event found in resulting trace")
+current_test += 1
+
+print_test_result(debug_link_event_found, current_test, "lttng_ust_dl:debug_link event found in resulting trace")
+current_test += 1
+
+print_test_result(dlclose_event_found, current_test, "lttng_ust_dl:dlclose event found in resulting trace")
+current_test += 1
+
+shutil.rmtree(session_info.tmp_directory)
projects / lttng-tools.git / commitdiff
