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#!/bin/bash
#
# SPDX-FileCopyrightText: 2019 Michael Jeanson <mjeanson@efficios.com>
#
# SPDX-License-Identifier: LGPL-2.1-only
TEST_DESC="UST - Namespace contexts change"
CURDIR=$(dirname "$0")/
TESTDIR=$CURDIR/../../..
TESTAPP_PATH="$TESTDIR/utils/testapp"
TESTAPP_NAME="gen-ust-events-ns"
TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
NUM_EVENT=1000
EVENT_NAME="tp:tptest"
TESTS_PER_NS=16
NUM_TESTS=$((TESTS_PER_NS * 5))
source "$TESTDIR/utils/utils.sh"
# MUST set TESTDIR before calling those functions
function test_ns()
{
local ns=$1
local session_name="${ns}_ns"
local chan_name="${ns}_ns"
local context_name="${ns}_ns"
local trace_path
local ns_inode
local file_sync_before_last
local file_sync_after_unshare
# Check if the kernel has support for this ns type
if [ ! -f "/proc/$$/ns/$ns" ]; then
skip 0 "System has no $ns namespace support" $TESTS_PER_NS
return
fi
# Get the current ns inode number
ns_inode=$(stat -c '%i' -L "/proc/$$/ns/$ns")
ok $? "Get current $ns namespace inode: $ns_inode" || ns_inode="invalid"
trace_path=$(mktemp -d -t "tmp.${FUNCNAME[0]}_trace_path.XXXXXX")
file_sync_before_last=$(mktemp -u -t "tmp.${FUNCNAME[0]}_sync_before_last.XXXXXX")
file_sync_after_unshare=$(mktemp -u -t "tmp.${FUNCNAME[0]}_sync_after_unshare.XXXXXX")
start_lttng_sessiond
create_lttng_session_ok "$session_name" "$trace_path"
enable_ust_lttng_channel_ok "$session_name" "$chan_name"
add_context_ust_ok "$session_name" "$chan_name" "$context_name"
enable_ust_lttng_event_ok "$session_name" "$EVENT_NAME" "$chan_name"
start_lttng_tracing_ok "$session_name"
$TESTAPP_BIN -n "$ns" -i $NUM_EVENT -a "$file_sync_after_unshare" -b "$file_sync_before_last" &
app_pid=$!
while [ ! -f "$file_sync_after_unshare" ]; do
# Break if the app failed / died
if ! kill -0 "$app_pid" ; then
echo "# App failed"
break
fi
echo "# Waiting for app..."
sleep 0.5
done
app_ns_inode=$(stat -c '%i' -L "/proc/$app_pid/ns/$ns")
ok $? "Get current $ns namespace inode: $app_ns_inode" || app_ns_inode="invalid"
test "$ns_inode" != "invalid" && test "$app_ns_inode" != "invalid" && test "$ns_inode" != "$app_ns_inode"
ok $? "Reported namespace inode changed after unshare"
touch "$file_sync_before_last"
# Wait for the test app to generate all expected events and exit.
wait $app_pid
# stop and destroy
stop_lttng_tracing_ok "$session_name"
destroy_lttng_session_ok "$session_name"
stop_lttng_sessiond
# Check that the events contain the right namespace inode number
validate_trace_count "${ns}_ns = $ns_inode" "$trace_path" $NUM_EVENT
validate_trace_count "${ns}_ns = $app_ns_inode" "$trace_path" $NUM_EVENT
rm -rf "$trace_path"
rm -f "$file_sync_before_last"
rm -f "$file_sync_after_unshare"
}
plan_tests $NUM_TESTS
print_test_banner "$TEST_DESC"
bail_out_if_no_babeltrace
check_skip_kernel_test "$NUM_TESTS" "Skipping all tests." && exit 0
system_has_ns=0
if [ -d "/proc/$$/ns" ]; then
system_has_ns=1
fi
skip $system_has_ns "System has no namespaces support" $NUM_TESTS && exit 0
test_ns cgroup
test_ns ipc
test_ns mnt
test_ns net
#test_ns pid # pid_ns is special, can't be changed that way
#test_ns time # time_ns is special, can't be changed that way
#test_ns user # user_ns can only be change when the app is single threaded, this is always false for an ust instrumented app
test_ns uts
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