tests/regression/tools/notification/test_notification_kernel_syscall

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2017 Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
   4 #
   5 # SPDX-License-Identifier: LGPL-2.1-only
   6
   7 CURDIR=$(dirname $0)/
   8 TESTDIR=$CURDIR/../../../
   9
  10 TMPDIR=$(mktemp -d)
  11
  12 #This is needed since the testpoint create a pipe with the consumerd type suffixed
  13 TESTPOINT_BASE_PATH=$(readlink -f "$TMPDIR/lttng.t_p_n")
  14 TESTPOINT_PIPE_PATH=$(mktemp -u "${TESTPOINT_BASE_PATH}.XXXXXX")
  15 TESTPOINT=$(readlink -f ${CURDIR}/.libs/libpause_consumer.so)
  16
  17
  18 TESTAPP_PATH="$TESTDIR/utils/testapp"
  19 TESTAPP_NAME="gen-ust-events"
  20 TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
  21 TESTAPP_STATE_PATH=$(mktemp -u "$TMPDIR/application_state.XXXXXXXXXX")
  22
  23 SYSCALL_TESTAPP_NAME="gen-syscall-events"
  24 SYSCALL_TESTAPP_BIN="$TESTAPP_PATH/$SYSCALL_TESTAPP_NAME/$SYSCALL_TESTAPP_NAME"
  25
  26 USERSPACE_PROBE_ELF_TESTAPP_NAME="userspace-probe-elf-binary"
  27 USERSPACE_PROBE_ELF_TESTAPP_BIN="$TESTAPP_PATH/$USERSPACE_PROBE_ELF_TESTAPP_NAME/.libs/$USERSPACE_PROBE_ELF_TESTAPP_NAME"
  28
  29 SESSION_NAME="my_session"
  30 CHANNEL_NAME="my_channel"
  31
  32 TRACE_PATH=$(mktemp -d)
  33 PAGE_SIZE=$(getconf PAGE_SIZE)
  34
  35 DIR=$(readlink -f $TESTDIR)
  36 NUM_TESTS=104
  37
  38 source $TESTDIR/utils/utils.sh
  39
  40 function kernel_event_generator_toggle_state
  41 {
  42         kernel_event_generator_suspended=$((kernel_event_generator_suspended==0))
  43 }
  44
  45 function generate_filter_events
  46 {
  47         /bin/echo -n "10" > /proc/lttng-test-filter-event 2> /dev/null
  48 }
  49
  50 function generate_syscalls
  51 {
  52         # Pass /dev/null so to generate the syscall right away.
  53         $SYSCALL_TESTAPP_BIN /dev/null
  54 }
  55
  56 function userspace_probe_testapp
  57 {
  58          $USERSPACE_PROBE_ELF_TESTAPP_BIN
  59 }
  60
  61 function kernel_event_generator
  62 {
  63         command_to_run=$1
  64         state_file=$2
  65         kernel_event_generator_suspended=0
  66         trap kernel_event_generator_toggle_state SIGUSR1
  67
  68         while (true); do
  69                 if [[ $kernel_event_generator_suspended -eq "1" ]]; then
  70                         touch $state_file
  71                         sleep 0.5
  72                 else
  73                         if [[ -f $state_file ]]; then
  74                                 rm $state_file 2> /dev/null
  75                         fi
  76                         $command_to_run
  77                 fi
  78         done
  79 }
  80
  81 function test_kernel_syscall_notification
  82 {
  83         kernel_event_generator generate_syscalls $TESTAPP_STATE_PATH &
  84         APP_PID=$!
  85
  86         $CURDIR/notification 5 LTTNG_DOMAIN_KERNEL $APP_PID $TESTAPP_STATE_PATH
  87
  88         kill -9 $APP_PID
  89         wait $APP_PID 2> /dev/null
  90 }
  91
  92 if [ "$(id -u)" == "0" ]; then
  93         consumerd_pipe=()
  94
  95         validate_lttng_modules_present
  96
  97         # This is needed since the testpoint create a pipe with the consumer
  98         # type suffixed.
  99         for f in "$TESTPOINT_BASE_PATH"*; do
 100                 consumerd_pipe+=("$f")
 101         done
 102
 103         modprobe lttng-test
 104
 105         LTTNG_SESSIOND_ENV_VARS="LTTNG_TESTPOINT_ENABLE=1 \
 106                 CONSUMER_PAUSE_PIPE_PATH=${TESTPOINT_PIPE_PATH} \
 107                 LD_PRELOAD=${TESTPOINT}"
 108
 109         start_lttng_sessiond_notap
 110
 111         test_kernel_syscall_notification
 112
 113         stop_lttng_sessiond_notap
 114         rmmod lttng-test
 115
 116         rm -rf ${consumerd_pipe[@]} 2> /dev/null
 117 else
 118         # Kernel tests are skipped.
 119         plan_tests $NUM_TESTS
 120         skip 0 "Root access is needed. Skipping all kernel notification tests." $NUM_TESTS
 121 fi
 122
 123 # Just in case cleanup
 124 rm -rf $TRACE_PATH
 125 rm -rf $TMPDIR