3 # Copyright (C) 2019 Michael Jeanson <mjeanson@efficios.com>
5 # This library is free software; you can redistribute it and/or modify it under
6 # the terms of the GNU Lesser General Public License as published by the Free
7 # Software Foundation; version 2.1 of the License.
9 # This library is distributed in the hope that it will be useful, but WITHOUT
10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11 # FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
14 # You should have received a copy of the GNU Lesser General Public License
15 # along with this library; if not, write to the Free Software Foundation, Inc.,
16 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 TEST_DESC
="UST - Namespace contexts change"
20 CURDIR
=$
(dirname "$0")/
21 TESTDIR
=$CURDIR/..
/..
/..
23 TESTAPP_PATH
="$TESTDIR/utils/testapp"
24 TESTAPP_NAME
="gen-ust-events-ns"
25 TESTAPP_BIN
="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
27 EVENT_NAME
="tp:tptest"
31 NUM_TESTS
=$
((TESTS_PER_NS
* 5))
33 source "$TESTDIR/utils/utils.sh"
35 # MUST set TESTDIR before calling those functions
41 local session_name
="${ns}_ns"
42 local chan_name
="${ns}_ns"
43 local context_name
="${ns}_ns"
47 local file_sync_before_last
48 local file_sync_after_unshare
50 # Check if the kernel has support for this ns type
51 if [ ! -f "/proc/$$/ns/$ns" ]; then
52 skip
0 "System has no $ns namespace support" $TESTS_PER_NS
56 # Get the current ns inode number
57 ns_inode
=$
(stat
-c '%i' -L "/proc/$$/ns/$ns")
58 ok $?
"Get current $ns namespace inode: $ns_inode" || ns_inode
="invalid"
60 trace_path
=$
(mktemp
-d)
61 file_sync_before_last
=$
(mktemp
-u)
62 file_sync_after_unshare
=$
(mktemp
-u)
66 create_lttng_session_ok
"$session_name" "$trace_path"
67 enable_ust_lttng_channel_ok
"$session_name" "$chan_name"
68 add_context_ust_ok
"$session_name" "$chan_name" "$context_name"
69 enable_ust_lttng_event_ok
"$session_name" "$EVENT_NAME" "$chan_name"
70 start_lttng_tracing_ok
"$session_name"
72 $TESTAPP_BIN -n "$ns" -i $NUM_EVENT -a "$file_sync_after_unshare" -b "$file_sync_before_last" &
75 # Let the app do it's thing before entering the synchronisation loop
78 while [ ! -f "$file_sync_after_unshare" ]; do
79 # Break if the app failed / died
80 if [ ! -f "/proc/$app_pid" ]; then
83 echo "# Waiting for app..."
87 app_ns_inode
=$
(stat
-c '%i' -L "/proc/$app_pid/ns/$ns")
88 ok $?
"Get current $ns namespace inode: $app_ns_inode" || app_ns_inode
="invalid"
90 test "$ns_inode" != "invalid" && test "$app_ns_inode" != "invalid" && test "$ns_inode" != "$app_ns_inode"
91 ok $?
"Reported namespace inode changed after unshare"
93 touch "$file_sync_before_last"
96 stop_lttng_tracing_ok
"$session_name"
97 destroy_lttng_session_ok
"$session_name"
100 # Check that the events contain the right namespace inode number
101 validate_trace_count
"${ns}_ns = $ns_inode" "$trace_path" $NUM_EVENT
102 validate_trace_count
"${ns}_ns = $app_ns_inode" "$trace_path" $NUM_EVENT
105 rm -f "$file_sync_before_last"
106 rm -f "$file_sync_after_unshare"
110 plan_tests
$NUM_TESTS
112 print_test_banner
"$TEST_DESC"
115 if [ "$(id -u)" == "0" ]; then
119 skip
$isroot "Root access is needed. Skipping all tests." "$NUM_TESTS" && exit 0
122 if [ -d "/proc/$$/ns" ]; then
126 skip
$system_has_ns "System has no namespaces support" $NUM_TESTS && exit 0
133 #test_ns pid # pid_ns is special, can't be changed that way
134 #test_ns user # user_ns can only be change when the app is single threaded, this is always false for an ust instrumented app