projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| ab95d85d JD |
1 | #!/bin/bash |
| 2 | # | |
| 3 | # Copyright (C) - 2017 Julien Desfossez <jdesfossez@efficios.com> | |
| 4 | # | |
| 5 | # This program is free software; you can redistribute it and/or modify it | |
| 6 | # under the terms of the GNU General Public License, version 2 only, as | |
| 7 | # published by the Free Software Foundation. | |
| 8 | # | |
| 9 | # This program is distributed in the hope that it will be useful, but WITHOUT | |
| 10 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 | # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 12 | # more details. | |
| 13 | # | |
| 14 | # You should have received a copy of the GNU General Public License along with | |
| 15 | # this program; if not, write to the Free Software Foundation, Inc., 51 | |
| 16 | # Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 17 | ||
| 18 | TEST_DESC="Kernel tracer - lttng-logger" | |
| 19 | ||
| 20 | CURDIR=$(dirname $0)/ | |
| 21 | TESTDIR=$CURDIR/../.. | |
| 22 | NUM_TESTS=30 | |
| 23 | PAYLOAD="test_logger" | |
| 24 | SESSION_NAME="kernel_event_basic" | |
| 25 | ||
| 26 | source $TESTDIR/utils/utils.sh | |
| 27 | ||
| 28 | function test_proc_logger() | |
| 29 | { | |
| 30 | diag "Test /proc/lttng-logger" | |
| 31 | ||
| 32 | TRACE_PATH=$(mktemp -d) | |
| 33 | ||
| 34 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
| 35 | ||
| 36 | lttng_enable_kernel_event $SESSION_NAME "lttng_logger" | |
| 37 | ||
| 38 | start_lttng_tracing_ok | |
| 39 | ||
| 40 | test -e /proc/lttng-logger | |
| 41 | if test $? = 0; then | |
| 42 | pass "/proc/lttng-logger exists" | |
| 43 | echo -n "$PAYLOAD proc" > /proc/lttng-logger | |
| 44 | ok $? "Write in /proc/lttng-logger" | |
| 45 | else | |
| 46 | fail "No /proc/lttng-logger" | |
| 47 | fi | |
| 48 | ||
| 49 | stop_lttng_tracing_ok | |
| 50 | ||
| 51 | validate_trace_count "lttng_logger" $TRACE_PATH 1 | |
| 52 | validate_trace_only_exp "$PAYLOAD" $TRACE_PATH | |
| 53 | ||
| 54 | destroy_lttng_session_ok $SESSION_NAME | |
| 55 | ||
| 56 | rm -rf $TRACE_PATH | |
| 57 | } | |
| 58 | ||
| 59 | function test_dev_logger() | |
| 60 | { | |
| 61 | diag "Test /dev/lttng-logger" | |
| 62 | ||
| 63 | TRACE_PATH=$(mktemp -d) | |
| 64 | ||
| 65 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
| 66 | ||
| 67 | lttng_enable_kernel_event $SESSION_NAME "lttng_logger" | |
| 68 | ||
| 69 | start_lttng_tracing_ok | |
| 70 | ||
| 71 | test -c /dev/lttng-logger | |
| 72 | if test $? = 0; then | |
| 73 | pass "/dev/lttng-logger is a character device" | |
| 74 | echo -n "$PAYLOAD dev" > /dev/lttng-logger | |
| 75 | ok $? "Write in /dev/lttng-logger" | |
| 76 | else | |
| 77 | fail "No /dev/lttng-logger" | |
| 78 | fi | |
| 79 | ||
| 80 | stop_lttng_tracing_ok | |
| 81 | ||
| 82 | validate_trace_count "lttng_logger" $TRACE_PATH 1 | |
| 83 | validate_trace_only_exp "$PAYLOAD" $TRACE_PATH | |
| 84 | ||
| 85 | destroy_lttng_session_ok $SESSION_NAME | |
| 86 | ||
| 87 | rm -rf $TRACE_PATH | |
| 88 | } | |
| 89 | ||
| 90 | function test_payload_limit() | |
| 91 | { | |
| 92 | diag "Test lttng-logger payload limit" | |
| 93 | ||
| 94 | TRACE_PATH=$(mktemp -d) | |
| 95 | ||
| 96 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
| 97 | ||
| 98 | lttng_enable_kernel_event $SESSION_NAME "lttng_logger" | |
| 99 | ||
| 100 | start_lttng_tracing_ok | |
| 101 | ||
| 102 | # Write 100 times "test_logger", which generates 1200 characters, we expect | |
| 103 | # the tracer to write 2 events from that string because it limits the | |
| 104 | # input to 1024 strings. | |
| 105 | printf "%.s $PAYLOAD" {1..100} > /proc/lttng-logger | |
| 106 | printf "%.s $PAYLOAD" {1..100} > /dev/lttng-logger | |
| 107 | ||
| 108 | stop_lttng_tracing_ok | |
| 109 | ||
| 110 | validate_trace_count "lttng_logger" $TRACE_PATH 4 | |
| 111 | validate_trace_only_exp "$PAYLOAD" $TRACE_PATH | |
| 112 | ||
| 113 | destroy_lttng_session_ok $SESSION_NAME | |
| 114 | ||
| 115 | rm -rf $TRACE_PATH | |
| 116 | } | |
| 117 | ||
| 118 | # MUST set TESTDIR before calling those functions | |
| 119 | plan_tests $NUM_TESTS | |
| 120 | ||
| 121 | print_test_banner "$TEST_DESC" | |
| 122 | ||
| 123 | if [ "$(id -u)" == "0" ]; then | |
| 124 | isroot=1 | |
| 125 | else | |
| 126 | isroot=0 | |
| 127 | fi | |
| 128 | ||
| 129 | skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS || | |
| 130 | { | |
| 131 | start_lttng_sessiond | |
| 132 | ||
| 133 | test_proc_logger | |
| 134 | test_dev_logger | |
| 135 | test_payload_limit | |
| 136 | ||
| 137 | stop_lttng_sessiond | |
| 138 | } |