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#!/bin/bash
#
# SPDX-FileCopyrightText: 2019 Michael Jeanson <mjeanson@efficios.com>
#
# SPDX-License-Identifier: LGPL-2.1-only
TEST_DESC="Kernel tracer - Namespace contexts change"
CURDIR=$(dirname "$0")/
TESTDIR=$CURDIR/../..
TESTAPP_PATH="$TESTDIR/utils/testapp"
TESTAPP_NAME="gen-ns-events"
TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
TESTS_PER_NS=21
NUM_TESTS=$((TESTS_PER_NS * 6))
source "$TESTDIR/utils/utils.sh"
# MUST set TESTDIR before calling those functions
function add_context_kernel_skip_ok()
{
local session_name=$1
local channel_name=$2
local context_name=$3
local skip_num=$4
local ret
_run_lttng_cmd "$(lttng_client_log_file)" "$(lttng_client_err_file)" add-context -k \
-s "$session_name" -c "$channel_name" -t "$context_name"
ret=$?
if [ "$ret" == "4" ]; then
skip 0 "Current kernel doesn't implement '$context_name' context" $((skip_num + 1))
else
ok $ret "Add context command for type: $context_name"
fi
return $ret
}
function enable_kernel_lttng_event_filter_ok()
{
local session_name=$1
local syscall_name=$2
local channel_name=$3
local filter=$4
_run_lttng_cmd "$(lttng_client_log_file)" "$(lttng_client_err_file)" enable-event -k \
-c "$channel_name" -s "$session_name" \ --syscall "$syscall_name" \
-f "$filter"
ok $? "Add syscall with filter"
}
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_wait_before_unshare
local file_sync_wait_after_unshare
local file_sync_signal_after_unshare
# Check if the kernel has support for this ns type
if [ ! -f "/proc/$$/ns/$ns" ]; then
skip 0 "System has no $ns namespace support" $TESTS_PER_NS
return
fi
trace_path=$(mktemp -d -t "tmp.${FUNCNAME[0]}_trace_path.XXXXXX")
file_sync_wait_before_unshare=$(mktemp -u -t "tmp.${FUNCNAME[0]}_sync_before_unshare.XXXXXX")
file_sync_wait_after_unshare=$(mktemp -u -t "tmp.${FUNCNAME[0]}_sync_after_unshare.XXXXXX")
file_sync_signal_after_unshare=$(mktemp -u -t "tmp.${FUNCNAME[0]}_sync_signal_after_unshare.XXXXXX")
# Get the current ns inode number
ns_inode=$(stat -c '%i' -L "/proc/$$/ns/$ns")
ok $? "Get current $ns namespace inode: $ns_inode" || ns_inode="invalid"
$TESTAPP_BIN -n "$ns" -a "$file_sync_wait_after_unshare" -b "$file_sync_wait_before_unshare" -s "$file_sync_signal_after_unshare" &
ok $? "Launch test app."
app_pid=$!
app_ns_inode=$(stat -c '%i' -L "/proc/$app_pid/ns/$ns")
ok $? "Get app current $ns namespace inode: $app_ns_inode" || app_ns_inode="invalid"
lttng_modules_loaded_fail
start_lttng_sessiond
create_lttng_session_ok "$session_name" "$trace_path"
enable_kernel_lttng_channel_ok "$session_name" "$chan_name"
add_context_kernel_skip_ok "$session_name" "$chan_name" "$context_name" 10
if [ "$?" != "4" ]; then
lttng_enable_kernel_syscall_ok "$session_name" "unshare" "$chan_name"
lttng_track_pid_ok "$app_pid"
start_lttng_tracing_ok "$session_name"
touch "$file_sync_wait_before_unshare"
while [ ! -f "$file_sync_signal_after_unshare" ]; do
# Break if the app failed / died
if ! kill -0 "$app_pid" ; then
break
echo "# App failed"
fi
echo "# Waiting for app..."
sleep 0.5
done
app_unshare_ns_inode=$(stat -c '%i' -L "/proc/$app_pid/ns/$ns")
ok $? "Get app current $ns namespace inode: $app_unshare_ns_inode" || app_unshare_ns_inode="invalid"
test "$app_ns_inode" != "invalid" && test "$app_unshare_ns_inode" != "invalid" && test "$app_ns_inode" != "$app_unshare_ns_inode"
ok $? "Reported namespace inode changed after unshare"
touch "$file_sync_wait_after_unshare"
stop_lttng_tracing_ok "$session_name"
# Check that the events contain the right namespace inode number
validate_trace_count "${ns}_ns = $app_ns_inode" "$trace_path" 1
validate_trace_count "${ns}_ns = $app_unshare_ns_inode" "$trace_path" 1
else
touch "$file_sync_wait_before_unshare"
while [ ! -f "$file_sync_signal_after_unshare" ]; do
# Break if the app failed / died
if ! kill -0 "$app_pid" ; then
break
echo "# App failed"
fi
echo "# Waiting for app..."
sleep 0.5
done
touch "$file_sync_wait_after_unshare"
fi
# stop and destroy
destroy_lttng_session_ok "$session_name"
stop_lttng_sessiond
lttng_modules_loaded_fail
rm -rf "$trace_path"
rm -f "$file_sync_wait_after_unshare"
rm -f "$file_sync_wait_before_unshare"
rm -f "$file_sync_signal_after_unshare"
}
plan_tests $NUM_TESTS
print_test_banner "$TEST_DESC"
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
validate_lttng_modules_present
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
test_ns uts
set +x
|
