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8a558304 MJ |
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 | # Let the app do it's thing before entering the synchronisation loop | |
76 | sleep 0.5 | |
77 | ||
78 | while [ ! -f "$file_sync_after_unshare" ]; do | |
79 | # Break if the app failed / died | |
80 | if [ ! -f "/proc/$app_pid" ]; then | |
81 | break | |
82 | fi | |
83 | echo "# Waiting for app..." | |
84 | sleep 0.5 | |
85 | done | |
86 | ||
87 | app_ns_inode=$(stat -c '%i' -L "/proc/$app_pid/ns/$ns") | |
88 | ok $? "Get current $ns namespace inode: $app_ns_inode" || app_ns_inode="invalid" | |
89 | ||
90 | test "$ns_inode" != "invalid" && test "$app_ns_inode" != "invalid" && test "$ns_inode" != "$app_ns_inode" | |
91 | ok $? "Reported namespace inode changed after unshare" | |
92 | ||
93 | touch "$file_sync_before_last" | |
94 | ||
95 | # stop and destroy | |
96 | stop_lttng_tracing_ok "$session_name" | |
97 | destroy_lttng_session_ok "$session_name" | |
98 | stop_lttng_sessiond | |
99 | ||
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" $NUM_EVENT | |
103 | ||
104 | rm -rf "$trace_path" | |
105 | rm -f "$file_sync_before_last" | |
106 | rm -f "$file_sync_after_unshare" | |
107 | } | |
108 | ||
109 | ||
110 | plan_tests $NUM_TESTS | |
111 | ||
112 | print_test_banner "$TEST_DESC" | |
113 | ||
114 | isroot=0 | |
115 | if [ "$(id -u)" == "0" ]; then | |
116 | isroot=1 | |
117 | fi | |
118 | ||
119 | skip $isroot "Root access is needed. Skipping all tests." "$NUM_TESTS" && exit 0 | |
120 | ||
121 | system_has_ns=0 | |
122 | if [ -d "/proc/$$/ns" ]; then | |
123 | system_has_ns=1 | |
124 | fi | |
125 | ||
126 | skip $system_has_ns "System has no namespaces support" $NUM_TESTS && exit 0 | |
127 | ||
128 | ||
129 | test_ns cgroup | |
130 | test_ns ipc | |
131 | test_ns mnt | |
132 | test_ns net | |
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 | |
135 | test_ns uts |