3 # Copyright (C) 2019 Michael Jeanson <mjeanson@efficios.com>
5 # SPDX-License-Identifier: LGPL-2.1-only
7 TEST_DESC
="UST - Namespace contexts change"
9 CURDIR
=$
(dirname "$0")/
10 TESTDIR
=$CURDIR/..
/..
/..
12 TESTAPP_PATH
="$TESTDIR/utils/testapp"
13 TESTAPP_NAME
="gen-ust-events-ns"
14 TESTAPP_BIN
="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
16 EVENT_NAME
="tp:tptest"
20 NUM_TESTS
=$
((TESTS_PER_NS
* 5))
22 source "$TESTDIR/utils/utils.sh"
24 # MUST set TESTDIR before calling those functions
30 local session_name
="${ns}_ns"
31 local chan_name
="${ns}_ns"
32 local context_name
="${ns}_ns"
36 local file_sync_before_last
37 local file_sync_after_unshare
39 # Check if the kernel has support for this ns type
40 if [ ! -f "/proc/$$/ns/$ns" ]; then
41 skip
0 "System has no $ns namespace support" $TESTS_PER_NS
45 # Get the current ns inode number
46 ns_inode
=$
(stat
-c '%i' -L "/proc/$$/ns/$ns")
47 ok $?
"Get current $ns namespace inode: $ns_inode" || ns_inode
="invalid"
49 trace_path
=$
(mktemp
--tmpdir -d "tmp.${FUNCNAME[0]}_trace_path.XXXXXX")
50 file_sync_before_last
=$
(mktemp
--tmpdir -u "tmp.${FUNCNAME[0]}_sync_before_last.XXXXXX")
51 file_sync_after_unshare
=$
(mktemp
--tmpdir -u "tmp.${FUNCNAME[0]}_sync_after_unshare.XXXXXX")
55 create_lttng_session_ok
"$session_name" "$trace_path"
56 enable_ust_lttng_channel_ok
"$session_name" "$chan_name"
57 add_context_ust_ok
"$session_name" "$chan_name" "$context_name"
58 enable_ust_lttng_event_ok
"$session_name" "$EVENT_NAME" "$chan_name"
59 start_lttng_tracing_ok
"$session_name"
61 $TESTAPP_BIN -n "$ns" -i $NUM_EVENT -a "$file_sync_after_unshare" -b "$file_sync_before_last" &
64 while [ ! -f "$file_sync_after_unshare" ]; do
65 # Break if the app failed / died
66 if ! kill -0 "$app_pid" ; then
70 echo "# Waiting for app..."
74 app_ns_inode
=$
(stat
-c '%i' -L "/proc/$app_pid/ns/$ns")
75 ok $?
"Get current $ns namespace inode: $app_ns_inode" || app_ns_inode
="invalid"
77 test "$ns_inode" != "invalid" && test "$app_ns_inode" != "invalid" && test "$ns_inode" != "$app_ns_inode"
78 ok $?
"Reported namespace inode changed after unshare"
80 touch "$file_sync_before_last"
83 stop_lttng_tracing_ok
"$session_name"
84 destroy_lttng_session_ok
"$session_name"
87 # Check that the events contain the right namespace inode number
88 validate_trace_count
"${ns}_ns = $ns_inode" "$trace_path" $NUM_EVENT
89 validate_trace_count
"${ns}_ns = $app_ns_inode" "$trace_path" $NUM_EVENT
92 rm -f "$file_sync_before_last"
93 rm -f "$file_sync_after_unshare"
99 print_test_banner
"$TEST_DESC"
102 if [ "$(id -u)" == "0" ]; then
106 skip
$isroot "Root access is needed. Skipping all tests." "$NUM_TESTS" && exit 0
109 if [ -d "/proc/$$/ns" ]; then
113 skip
$system_has_ns "System has no namespaces support" $NUM_TESTS && exit 0
120 #test_ns pid # pid_ns is special, can't be changed that way
121 #test_ns time # time_ns is special, can't be changed that way
122 #test_ns user # user_ns can only be change when the app is single threaded, this is always false for an ust instrumented app