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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"
CURDIR=$(dirname "$0")/
TESTDIR=$CURDIR/../..
TESTS_PER_NS=13
NUM_TESTS=$((TESTS_PER_NS * 8))
source "$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
# 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: $ns_inode"
trace_path=$(mktemp -d -t "tmp.${FUNCNAME[0]}_trace_path.XXXXXX")
lttng_modules_loaded_fail
start_lttng_sessiond
create_lttng_session_ok "$session_name" "$trace_path"
enable_kernel_lttng_channel_ok "$session_name" "$chan_name"
add_context_kernel_skip_ok "$session_name" "$chan_name" "$context_name" 4
if [ "$?" != "4" ]; then
enable_kernel_lttng_event_filter_ok "$session_name" "read" "$chan_name" "\$ctx.$context_name == $ns_inode"
start_lttng_tracing_ok "$session_name"
# Make sure there is at least one read syscall
cat /proc/cmdline >/dev/null
stop_lttng_tracing_ok "$session_name"
# Check that the events contain the right namespace inode number
validate_trace "${ns}_ns = $ns_inode" "$trace_path"
fi
destroy_lttng_session_ok "$session_name"
stop_lttng_sessiond
lttng_modules_loaded_fail
rm -rf "$trace_path"
}
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 does not support namespaces" $NUM_TESTS && exit 0
validate_lttng_modules_present
test_ns cgroup
test_ns ipc
test_ns mnt
test_ns net
test_ns pid
test_ns time
test_ns user
test_ns uts
|
