Tests: use "kill -0" for app existence check in NS tests
[lttng-tools.git] / tests / regression / ust / namespaces / test_ns_contexts_change
1 #!/bin/bash
2 #
3 # Copyright (C) 2019 Michael Jeanson <mjeanson@efficios.com>
4 #
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.
8 #
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
12 # details.
13 #
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
17
18 TEST_DESC="UST - Namespace contexts change"
19
20 CURDIR=$(dirname "$0")/
21 TESTDIR=$CURDIR/../../..
22
23 TESTAPP_PATH="$TESTDIR/utils/testapp"
24 TESTAPP_NAME="gen-ust-events-ns"
25 TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
26 NUM_EVENT=1000
27 EVENT_NAME="tp:tptest"
28
29 TESTS_PER_NS=16
30
31 NUM_TESTS=$((TESTS_PER_NS * 5))
32
33 source "$TESTDIR/utils/utils.sh"
34
35 # MUST set TESTDIR before calling those functions
36
37 function test_ns()
38 {
39 local ns=$1
40
41 local session_name="${ns}_ns"
42 local chan_name="${ns}_ns"
43 local context_name="${ns}_ns"
44
45 local trace_path
46 local ns_inode
47 local file_sync_before_last
48 local file_sync_after_unshare
49
50 # Check if the kernel has support for this ns type
51 if [ ! -f "/proc/$$/ns/$ns" ]; then
52 skip 0 "System has no $ns namespace support" $TESTS_PER_NS
53 return
54 fi
55
56 # Get the current ns inode number
57 ns_inode=$(stat -c '%i' -L "/proc/$$/ns/$ns")
58 ok $? "Get current $ns namespace inode: $ns_inode" || ns_inode="invalid"
59
60 trace_path=$(mktemp -d)
61 file_sync_before_last=$(mktemp -u)
62 file_sync_after_unshare=$(mktemp -u)
63
64 start_lttng_sessiond
65
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"
71
72 $TESTAPP_BIN -n "$ns" -i $NUM_EVENT -a "$file_sync_after_unshare" -b "$file_sync_before_last" &
73 app_pid=$!
74
75 while [ ! -f "$file_sync_after_unshare" ]; do
76 # Break if the app failed / died
77 if ! kill -0 "$app_pid" ; then
78 echo "# App failed"
79 break
80 fi
81 echo "# Waiting for app..."
82 sleep 0.5
83 done
84
85 app_ns_inode=$(stat -c '%i' -L "/proc/$app_pid/ns/$ns")
86 ok $? "Get current $ns namespace inode: $app_ns_inode" || app_ns_inode="invalid"
87
88 test "$ns_inode" != "invalid" && test "$app_ns_inode" != "invalid" && test "$ns_inode" != "$app_ns_inode"
89 ok $? "Reported namespace inode changed after unshare"
90
91 touch "$file_sync_before_last"
92
93 # stop and destroy
94 stop_lttng_tracing_ok "$session_name"
95 destroy_lttng_session_ok "$session_name"
96 stop_lttng_sessiond
97
98 # Check that the events contain the right namespace inode number
99 validate_trace_count "${ns}_ns = $ns_inode" "$trace_path" $NUM_EVENT
100 validate_trace_count "${ns}_ns = $app_ns_inode" "$trace_path" $NUM_EVENT
101
102 rm -rf "$trace_path"
103 rm -f "$file_sync_before_last"
104 rm -f "$file_sync_after_unshare"
105 }
106
107
108 plan_tests $NUM_TESTS
109
110 print_test_banner "$TEST_DESC"
111
112 isroot=0
113 if [ "$(id -u)" == "0" ]; then
114 isroot=1
115 fi
116
117 skip $isroot "Root access is needed. Skipping all tests." "$NUM_TESTS" && exit 0
118
119 system_has_ns=0
120 if [ -d "/proc/$$/ns" ]; then
121 system_has_ns=1
122 fi
123
124 skip $system_has_ns "System has no namespaces support" $NUM_TESTS && exit 0
125
126
127 test_ns cgroup
128 test_ns ipc
129 test_ns mnt
130 test_ns net
131 #test_ns pid # pid_ns is special, can't be changed that way
132 #test_ns user # user_ns can only be change when the app is single threaded, this is always false for an ust instrumented app
133 test_ns uts
This page took 0.046899 seconds and 5 git commands to generate.