projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| ab95d85d JD |
1 | #!/bin/bash |
| 2 | # | |
| 9d16b343 | 3 | # Copyright (C) 2017 Julien Desfossez <jdesfossez@efficios.com> |
| ab95d85d | 4 | # |
| 9d16b343 | 5 | # SPDX-License-Identifier: GPL-2.0-only |
| ab95d85d | 6 | # |
| ab95d85d JD |
7 | |
| 8 | TEST_DESC="Kernel tracer - lttng-logger" | |
| 9 | ||
| 10 | CURDIR=$(dirname $0)/ | |
| 11 | TESTDIR=$CURDIR/../.. | |
| 12 | NUM_TESTS=30 | |
| 13 | PAYLOAD="test_logger" | |
| 14 | SESSION_NAME="kernel_event_basic" | |
| 15 | ||
| 16 | source $TESTDIR/utils/utils.sh | |
| 17 | ||
| 18 | function test_proc_logger() | |
| 19 | { | |
| 20 | diag "Test /proc/lttng-logger" | |
| 21 | ||
| 22 | TRACE_PATH=$(mktemp -d) | |
| 23 | ||
| 24 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
| 25 | ||
| 26 | lttng_enable_kernel_event $SESSION_NAME "lttng_logger" | |
| 27 | ||
| 28 | start_lttng_tracing_ok | |
| 29 | ||
| 30 | test -e /proc/lttng-logger | |
| 31 | if test $? = 0; then | |
| 32 | pass "/proc/lttng-logger exists" | |
| 33 | echo -n "$PAYLOAD proc" > /proc/lttng-logger | |
| 34 | ok $? "Write in /proc/lttng-logger" | |
| 35 | else | |
| 36 | fail "No /proc/lttng-logger" | |
| 37 | fi | |
| 38 | ||
| 39 | stop_lttng_tracing_ok | |
| 40 | ||
| 41 | validate_trace_count "lttng_logger" $TRACE_PATH 1 | |
| 42 | validate_trace_only_exp "$PAYLOAD" $TRACE_PATH | |
| 43 | ||
| 44 | destroy_lttng_session_ok $SESSION_NAME | |
| 45 | ||
| 46 | rm -rf $TRACE_PATH | |
| 47 | } | |
| 48 | ||
| 49 | function test_dev_logger() | |
| 50 | { | |
| 51 | diag "Test /dev/lttng-logger" | |
| 52 | ||
| 53 | TRACE_PATH=$(mktemp -d) | |
| 54 | ||
| 55 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
| 56 | ||
| 57 | lttng_enable_kernel_event $SESSION_NAME "lttng_logger" | |
| 58 | ||
| 59 | start_lttng_tracing_ok | |
| 60 | ||
| 61 | test -c /dev/lttng-logger | |
| 62 | if test $? = 0; then | |
| 63 | pass "/dev/lttng-logger is a character device" | |
| 64 | echo -n "$PAYLOAD dev" > /dev/lttng-logger | |
| 65 | ok $? "Write in /dev/lttng-logger" | |
| 66 | else | |
| 67 | fail "No /dev/lttng-logger" | |
| 68 | fi | |
| 69 | ||
| 70 | stop_lttng_tracing_ok | |
| 71 | ||
| 72 | validate_trace_count "lttng_logger" $TRACE_PATH 1 | |
| 73 | validate_trace_only_exp "$PAYLOAD" $TRACE_PATH | |
| 74 | ||
| 75 | destroy_lttng_session_ok $SESSION_NAME | |
| 76 | ||
| 77 | rm -rf $TRACE_PATH | |
| 78 | } | |
| 79 | ||
| 80 | function test_payload_limit() | |
| 81 | { | |
| 82 | diag "Test lttng-logger payload limit" | |
| 83 | ||
| 84 | TRACE_PATH=$(mktemp -d) | |
| 85 | ||
| 86 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
| 87 | ||
| 88 | lttng_enable_kernel_event $SESSION_NAME "lttng_logger" | |
| 89 | ||
| 90 | start_lttng_tracing_ok | |
| 91 | ||
| 92 | # Write 100 times "test_logger", which generates 1200 characters, we expect | |
| 93 | # the tracer to write 2 events from that string because it limits the | |
| 94 | # input to 1024 strings. | |
| 95 | printf "%.s $PAYLOAD" {1..100} > /proc/lttng-logger | |
| 96 | printf "%.s $PAYLOAD" {1..100} > /dev/lttng-logger | |
| 97 | ||
| 98 | stop_lttng_tracing_ok | |
| 99 | ||
| 100 | validate_trace_count "lttng_logger" $TRACE_PATH 4 | |
| 101 | validate_trace_only_exp "$PAYLOAD" $TRACE_PATH | |
| 102 | ||
| 103 | destroy_lttng_session_ok $SESSION_NAME | |
| 104 | ||
| 105 | rm -rf $TRACE_PATH | |
| 106 | } | |
| 107 | ||
| 108 | # MUST set TESTDIR before calling those functions | |
| 109 | plan_tests $NUM_TESTS | |
| 110 | ||
| 111 | print_test_banner "$TEST_DESC" | |
| 112 | ||
| 113 | if [ "$(id -u)" == "0" ]; then | |
| 114 | isroot=1 | |
| 115 | else | |
| 116 | isroot=0 | |
| 117 | fi | |
| 118 | ||
| 119 | skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS || | |
| 120 | { | |
| 121 | start_lttng_sessiond | |
| 122 | ||
| 123 | test_proc_logger | |
| 124 | test_dev_logger | |
| 125 | test_payload_limit | |
| 126 | ||
| 127 | stop_lttng_sessiond | |
| 128 | } |