tests/utils/utils.sh

   1 # Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
   2 #
   3 # SPDX-License-Identifier: LGPL-2.1-only
   4 #
   5
   6 SESSIOND_BIN="lttng-sessiond"
   7 SESSIOND_MATCH=".*lttng-sess.*"
   8 RUNAS_BIN="lttng-runas"
   9 RUNAS_MATCH=".*lttng-runas.*"
  10 CONSUMERD_BIN="lttng-consumerd"
  11 CONSUMERD_MATCH=".*lttng-consumerd.*"
  12 RELAYD_BIN="lttng-relayd"
  13 RELAYD_MATCH=".*lttng-relayd.*"
  14 LTTNG_BIN="lttng"
  15 BABELTRACE_BIN="babeltrace"
  16 OUTPUT_DEST=/dev/null
  17 ERROR_OUTPUT_DEST=/dev/null
  18
  19 # Minimal kernel version supported for session daemon tests
  20 KERNEL_MAJOR_VERSION=2
  21 KERNEL_MINOR_VERSION=6
  22 KERNEL_PATCHLEVEL_VERSION=27
  23
  24 # We set the default UST register timeout and network and app socket timeout to
  25 # "wait forever", so that basic tests don't have to worry about hitting
  26 # timeouts on busy systems. Specialized tests should test those corner-cases.
  27 export LTTNG_UST_REGISTER_TIMEOUT=-1
  28 export LTTNG_NETWORK_SOCKET_TIMEOUT=-1
  29 export LTTNG_APP_SOCKET_TIMEOUT=-1
  30
  31 # We set the default lttng-sessiond path to /bin/true to prevent the spawning
  32 # of a daemonized sessiond. This is necessary since 'lttng create' will spawn
  33 # its own sessiond if none is running. It also ensures that 'lttng create'
  34 # fails when no sessiond is running.
  35 export LTTNG_SESSIOND_PATH="/bin/true"
  36
  37 source $TESTDIR/utils/tap/tap.sh
  38
  39 if [ -z ${LTTNG_TEST_TEARDOWN_TIMEOUT+x} ]; then
  40         LTTNG_TEST_TEARDOWN_TIMEOUT=60
  41 fi
  42
  43 function full_cleanup ()
  44 {
  45         # Try to kill daemons gracefully
  46         stop_lttng_relayd_notap SIGTERM $LTTNG_TEST_TEARDOWN_TIMEOUT
  47         stop_lttng_sessiond_notap SIGTERM $LTTNG_TEST_TEARDOWN_TIMEOUT
  48
  49         # If daemons are still present, forcibly kill them
  50         stop_lttng_relayd_notap SIGKILL $LTTNG_TEST_TEARDOWN_TIMEOUT
  51         stop_lttng_sessiond_notap SIGKILL $LTTNG_TEST_TEARDOWN_TIMEOUT
  52         stop_lttng_consumerd_notap SIGKILL $LTTNG_TEST_TEARDOWN_TIMEOUT
  53
  54         # Disable trap for SIGTERM since the following kill to the
  55         # pidgroup will be SIGTERM. Otherwise it loops.
  56         # The '-' before the pid number ($$) indicates 'kill' to signal the
  57         # whole process group.
  58         trap - SIGTERM && kill -- -$$
  59         exit 1
  60 }
  61
  62 function null_pipes ()
  63 {
  64         exec 0>/dev/null
  65         exec 1>/dev/null
  66         exec 2>/dev/null
  67 }
  68
  69 trap full_cleanup SIGINT SIGTERM
  70
  71 # perl prove closes its child pipes before giving it a chance to run its
  72 # signal trap handlers. Redirect pipes to /dev/null if SIGPIPE is caught
  73 # to allow those trap handlers to proceed.
  74
  75 trap null_pipes SIGPIPE
  76
  77 function print_ok ()
  78 {
  79         # Check if we are a terminal
  80         if [ -t 1 ]; then
  81                 echo -e "\e[1;32mOK\e[0m"
  82         else
  83                 echo -e "OK"
  84         fi
  85 }
  86
  87 function print_fail ()
  88 {
  89         # Check if we are a terminal
  90         if [ -t 1 ]; then
  91                 echo -e "\e[1;31mFAIL\e[0m"
  92         else
  93                 echo -e "FAIL"
  94         fi
  95 }
  96
  97 function print_test_banner ()
  98 {
  99         local desc="$1"
 100         diag "$desc"
 101 }
 102
 103 function validate_kernel_version ()
 104 {
 105         local kern_version=($(uname -r | awk -F. '{ printf("%d.%d.%d\n",$1,$2,$3); }' | tr '.' '\n'))
 106         if [ ${kern_version[0]} -gt $KERNEL_MAJOR_VERSION ]; then
 107                 return 0
 108         fi
 109         if [ ${kern_version[1]} -gt $KERNEL_MINOR_VERSION ]; then
 110                 return 0
 111         fi
 112         if [ ${kern_version[2]} -ge $KERNEL_PATCHLEVEL_VERSION ]; then
 113                 return 0
 114         fi
 115         return 1
 116 }
 117
 118 # Generate a random string
 119 #  $1 = number of characters; defaults to 16
 120 #  $2 = include special characters; 1 = yes, 0 = no; defaults to yes
 121 function randstring()
 122 {
 123         [ "$2" == "0" ] && CHAR="[:alnum:]" || CHAR="[:graph:]"
 124         cat /dev/urandom 2>/dev/null | tr -cd "$CHAR" 2>/dev/null | head -c ${1:-16} 2>/dev/null
 125         echo
 126 }
 127
 128 # Return the number of _configured_ CPUs.
 129 function conf_proc_count()
 130 {
 131         getconf _NPROCESSORS_CONF
 132         if [ $? -ne 0 ]; then
 133                 diag "Failed to get the number of configured CPUs"
 134         fi
 135         echo
 136 }
 137
 138 # Check if base lttng-modules are present.
 139 # Bail out on failure
 140 function validate_lttng_modules_present ()
 141 {
 142         # Check for loadable modules.
 143         modprobe -n lttng-tracer 2>/dev/null
 144         if [ $? -eq 0 ]; then
 145                 return 0
 146         fi
 147
 148         # Check for builtin modules.
 149         ls /proc/lttng > /dev/null 2>&1
 150         if [ $? -eq 0 ]; then
 151                 return 0
 152         fi
 153
 154         BAIL_OUT "LTTng modules not detected."
 155 }
 156
 157 function enable_kernel_lttng_event
 158 {
 159         local withtap="$1"
 160         local expected_to_fail="$2"
 161         local sess_name="$3"
 162         local event_name="$4"
 163         local channel_name="$5"
 164
 165         if [ -z "$event_name" ]; then
 166                 # Enable all event if no event name specified
 167                 event_name="-a"
 168         fi
 169
 170         if [ -z "$channel_name" ]; then
 171                 # default channel if none specified
 172                 chan=""
 173         else
 174                 chan="-c $channel_name"
 175         fi
 176
 177         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" $chan -s $sess_name -k 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 178         ret=$?
 179         if [[ $expected_to_fail -eq "1" ]]; then
 180                 test $ret -ne "0"
 181                 ret=$?
 182                 if [ $withtap -eq "1" ]; then
 183                         ok $ret "Enable kernel event $event_name for session $session_name on channel $channel_name failed as expected"
 184                 fi
 185         else
 186                 if [ $withtap -eq "1" ]; then
 187                         ok $ret "Enable kernel event $event_name for session $sess_name"
 188                 fi
 189         fi
 190 }
 191
 192 function enable_kernel_lttng_event_ok ()
 193 {
 194         enable_kernel_lttng_event 1 0 "$@"
 195 }
 196
 197 function enable_kernel_lttng_event_fail ()
 198 {
 199         enable_kernel_lttng_event 1 1 "$@"
 200 }
 201
 202 function enable_kernel_lttng_event_notap ()
 203 {
 204         enable_kernel_lttng_event 0 0 "$@"
 205 }
 206
 207 # Old interface
 208 function lttng_enable_kernel_event
 209 {
 210         enable_kernel_lttng_event_ok "$@"
 211 }
 212
 213 function lttng_enable_kernel_syscall()
 214 {
 215         local expected_to_fail=$1
 216         local sess_name=$2
 217         local syscall_name=$3
 218         local channel_name=$4
 219
 220         if [ -z $syscall_name ]; then
 221                 # Enable all event if no syscall name specified
 222                 syscall_name="-a"
 223         fi
 224
 225         if [ -z $channel_name ]; then
 226                 # default channel if none specified
 227                 chan=""
 228         else
 229                 chan="-c $channel_name"
 230         fi
 231
 232         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event --syscall "$syscall_name" $chan -s $sess_name -k 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 233         ret=$?
 234         if [[ $expected_to_fail -eq "1" ]]; then
 235                 test $ret -ne "0"
 236                 ok $? "Enable kernel syscall $syscall_name for session $sess_name on channel $channel_name fail as expected"
 237         else
 238                 ok $ret "Enable kernel syscall $syscall_name for session $sess_name on channel $channel_name"
 239         fi
 240 }
 241
 242 function lttng_enable_kernel_syscall_ok()
 243 {
 244         lttng_enable_kernel_syscall 0 "$@"
 245 }
 246
 247 function lttng_enable_kernel_syscall_fail()
 248 {
 249         lttng_enable_kernel_syscall 1 "$@"
 250 }
 251
 252 function lttng_disable_kernel_syscall()
 253 {
 254         local expected_to_fail=$1
 255         local sess_name=$2
 256         local syscall_name=$3
 257         local channel_name=$4
 258
 259         if [ -z $syscall_name ]; then
 260                 # Enable all event if no syscall name specified
 261                 syscall_name="-a"
 262         fi
 263
 264         if [ -z $channel_name ]; then
 265                 # default channel if none specified
 266                 chan=""
 267         else
 268                 chan="-c $channel_name"
 269         fi
 270
 271         $TESTDIR/../src/bin/lttng/$LTTNG_BIN disable-event --syscall "$syscall_name" $chan -s $sess_name -k 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 272
 273         ret=$?
 274         if [[ $expected_to_fail -eq "1" ]]; then
 275                 test $ret -ne "0"
 276                 ok $? "Disable kernel syscall $syscall_name for session $sess_name on channel $channel_name failed as expected"
 277         else
 278                 ok $ret "Disable kernel syscall $syscall_name for session $sess_name on channel $channel_name"
 279         fi
 280 }
 281
 282 function lttng_disable_kernel_syscall_ok()
 283 {
 284         lttng_disable_kernel_syscall 0 "$@"
 285 }
 286
 287 function lttng_disable_kernel_syscall_fail()
 288 {
 289         lttng_disable_kernel_syscall 1 "$@"
 290 }
 291
 292 function lttng_enable_kernel_userspace_probe_event ()
 293 {
 294         local expected_to_fail="$1"
 295         local sess_name="$2"
 296         local target="$3"
 297         local event_name="$4"
 298
 299         "$TESTDIR/../src/bin/lttng/$LTTNG_BIN" enable-event --kernel --userspace-probe="$target" "$event_name" -s "$sess_name" > "$OUTPUT_DEST" 2> "$ERROR_OUTPUT_DEST"
 300         ret=$?
 301         if [[ $expected_to_fail -eq "1" ]]; then
 302                 test $ret -ne "0"
 303                 ok $? "Enable kernel userspace probe event for session $sess_name failed as expected"
 304         else
 305                 ok $ret "Enable kernel userspace probe event for session $sess_name"
 306         fi
 307 }
 308
 309 function lttng_enable_kernel_userspace_probe_event_fail ()
 310 {
 311         lttng_enable_kernel_userspace_probe_event 1 "$@"
 312 }
 313
 314 function lttng_enable_kernel_userspace_probe_event_ok ()
 315 {
 316         lttng_enable_kernel_userspace_probe_event 0 "$@"
 317 }
 318
 319 function disable_kernel_lttng_userspace_probe_event_ok ()
 320 {
 321         local sess_name="$1"
 322         local event_name="$2"
 323
 324         "$TESTDIR/../src/bin/lttng/$LTTNG_BIN" disable-event --kernel "$event_name" -s "$sess_name" > "$OUTPUT_DEST" 2> "$ERROR_OUTPUT_DEST"
 325         ok $? "Disable kernel event $target for session $sess_name"
 326 }
 327 function lttng_enable_kernel_channel()
 328 {
 329         local withtap=$1
 330         local expected_to_fail=$2
 331         local sess_name=$3
 332         local channel_name=$4
 333         local opts="${@:5}"
 334
 335         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -k $channel_name -s $sess_name $opts 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 336         ret=$?
 337         if [[ $expected_to_fail -eq "1" ]]; then
 338                 test "$ret" -ne "0"
 339                 ret=$?
 340                 if [ $withtap -eq "1" ]; then
 341                         ok $ret "Enable channel $channel_name for session $sess_name failed as expected"
 342                 fi
 343         else
 344                 if [ $withtap -eq "1" ]; then
 345                         ok $ret "Enable channel $channel_name for session $sess_name"
 346                 fi
 347         fi
 348 }
 349
 350 function lttng_enable_kernel_channel_ok()
 351 {
 352         lttng_enable_kernel_channel 1 0 "$@"
 353 }
 354
 355 function lttng_enable_kernel_channel_fail()
 356 {
 357         lttng_enable_kernel_channel 1 1 "$@"
 358 }
 359
 360 function lttng_enable_kernel_channel_notap()
 361 {
 362         lttng_enable_kernel_channel 0 0 "$@"
 363 }
 364
 365 function enable_kernel_lttng_channel_ok()
 366 {
 367         lttng_enable_kernel_channel 1 0 "$@"
 368 }
 369
 370 function lttng_disable_kernel_channel()
 371 {
 372         local expected_to_fail=$1
 373         local sess_name=$2
 374         local channel_name=$3
 375
 376         $TESTDIR/../src/bin/lttng/$LTTNG_BIN disable-channel -k $channel_name -s $sess_name 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 377         ret=$?
 378         if [[ $expected_to_fail -eq "1" ]]; then
 379                 test "$ret" -ne "0"
 380                 ok $? "Disable channel $channel_name for session $sess_name failed as expected"
 381         else
 382                 ok $ret "Disable channel $channel_name for session $sess_name"
 383         fi
 384 }
 385
 386 function lttng_disable_kernel_channel_ok()
 387 {
 388         lttng_disable_kernel_channel 0 "$@"
 389 }
 390
 391 function lttng_disable_kernel_channel_fail()
 392 {
 393         lttng_disable_kernel_channel 1 "$@"
 394 }
 395
 396 function start_lttng_relayd_opt()
 397 {
 398         local withtap=$1
 399         local process_mode=$2
 400         local opt=$3
 401
 402         DIR=$(readlink -f "$TESTDIR")
 403
 404         if [ -z $(pgrep $RELAYD_MATCH) ]; then
 405                 # shellcheck disable=SC2086
 406                 $DIR/../src/bin/lttng-relayd/$RELAYD_BIN $process_mode $opt 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 407                 #$DIR/../src/bin/lttng-relayd/$RELAYD_BIN $opt -vvv >>/tmp/relayd.log 2>&1 &
 408                 if [ $? -eq 1 ]; then
 409                         if [ $withtap -eq "1" ]; then
 410                                 fail "Start lttng-relayd (process mode: $process_mode opt: $opt)"
 411                         fi
 412                         return 1
 413                 else
 414                         if [ $withtap -eq "1" ]; then
 415                                 pass "Start lttng-relayd (process mode: $process_mode opt: $opt)"
 416                         fi
 417                 fi
 418         else
 419                 pass "Start lttng-relayd (opt: $opt)"
 420         fi
 421 }
 422
 423 function start_lttng_relayd()
 424 {
 425         start_lttng_relayd_opt 1 "-b" "$@"
 426 }
 427
 428 function start_lttng_relayd_notap()
 429 {
 430         start_lttng_relayd_opt 0 "-b" "$@"
 431 }
 432
 433 function stop_lttng_relayd_opt()
 434 {
 435         local withtap=$1
 436         local signal=$2
 437
 438         if [ -z "$signal" ]; then
 439                 signal="SIGTERM"
 440         fi
 441
 442         local timeout_s=$3
 443         local dtimeleft_s=
 444
 445         # Multiply time by 2 to simplify integer arithmetic
 446         if [ -n "$timeout_s" ]; then
 447                 dtimeleft_s=$((timeout_s * 2))
 448         fi
 449
 450         local retval=0
 451         local pids=
 452
 453         pids=$(pgrep "$RELAYD_MATCH")
 454         if [ -z "$pids" ]; then
 455                 if [ "$withtap" -eq "1" ]; then
 456                         pass "No relay daemon to kill"
 457                 fi
 458                 return 0
 459         fi
 460
 461         diag "Killing (signal $signal) lttng-relayd (pid: $pids)"
 462
 463         # shellcheck disable=SC2086
 464         if ! kill -s $signal $pids 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST; then
 465                 retval=1
 466                 if [ "$withtap" -eq "1" ]; then
 467                         fail "Kill relay daemon"
 468                 fi
 469         else
 470                 out=1
 471                 while [ -n "$out" ]; do
 472                         out=$(pgrep "$RELAYD_MATCH")
 473                         if [ -n "$dtimeleft_s" ]; then
 474                                 if [ $dtimeleft_s -lt 0 ]; then
 475                                         out=
 476                                         retval=1
 477                                 fi
 478                                 dtimeleft_s=$((dtimeleft_s - 1))
 479                         fi
 480                         sleep 0.5
 481                 done
 482                 if [ "$withtap" -eq "1" ]; then
 483                         if [ "$retval" -eq "0" ]; then
 484                                 pass "Wait after kill relay daemon"
 485                         else
 486                                 fail "Wait after kill relay daemon"
 487                         fi
 488                 fi
 489         fi
 490         return $retval
 491 }
 492
 493 function stop_lttng_relayd()
 494 {
 495         stop_lttng_relayd_opt 1 "$@"
 496 }
 497
 498 function stop_lttng_relayd_notap()
 499 {
 500         stop_lttng_relayd_opt 0 "$@"
 501 }
 502
 503 #First arg: show tap output
 504 #Second argument: load path for automatic loading
 505 function start_lttng_sessiond_opt()
 506 {
 507         local withtap=$1
 508         local load_path=$2
 509
 510         local env_vars=""
 511         local consumerd=""
 512
 513         local long_bit_value=
 514         long_bit_value=$(getconf LONG_BIT)
 515
 516         if [ -n "$TEST_NO_SESSIOND" ] && [ "$TEST_NO_SESSIOND" == "1" ]; then
 517                 # Env variable requested no session daemon
 518                 return
 519         fi
 520
 521         DIR=$(readlink -f "$TESTDIR")
 522
 523         # Get long_bit value for 32/64 consumerd
 524         case "$long_bit_value" in
 525                 32)
 526                         consumerd="--consumerd32-path=$DIR/../src/bin/lttng-consumerd/lttng-consumerd"
 527                         ;;
 528                 64)
 529                         consumerd="--consumerd64-path=$DIR/../src/bin/lttng-consumerd/lttng-consumerd"
 530                         ;;
 531                 *)
 532                         return
 533                         ;;
 534         esac
 535
 536         # Check for env. variable. Allow the use of LD_PRELOAD etc.
 537         if [[ "x${LTTNG_SESSIOND_ENV_VARS}" != "x" ]]; then
 538                 env_vars="${LTTNG_SESSIOND_ENV_VARS} "
 539         fi
 540         env_vars="${env_vars}$DIR/../src/bin/lttng-sessiond/$SESSIOND_BIN"
 541
 542         if ! validate_kernel_version; then
 543             fail "Start session daemon"
 544             BAIL_OUT "*** Kernel too old for session daemon tests ***"
 545         fi
 546
 547         : "${LTTNG_SESSION_CONFIG_XSD_PATH="${DIR}/../src/common/config/"}"
 548         export LTTNG_SESSION_CONFIG_XSD_PATH
 549
 550         if [ -z "$(pgrep "${SESSIOND_MATCH}")" ]; then
 551                 # Have a load path ?
 552                 if [ -n "$load_path" ]; then
 553                         # shellcheck disable=SC2086
 554                         env $env_vars --load "$load_path" --background "$consumerd"
 555                 else
 556                         # shellcheck disable=SC2086
 557                         env $env_vars --background "$consumerd"
 558                 fi
 559                 #$DIR/../src/bin/lttng-sessiond/$SESSIOND_BIN --background --consumerd32-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd" --consumerd64-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd" --verbose-consumer >>/tmp/sessiond.log 2>&1
 560                 status=$?
 561                 if [ "$withtap" -eq "1" ]; then
 562                         ok $status "Start session daemon"
 563                 fi
 564         fi
 565 }
 566
 567 function start_lttng_sessiond()
 568 {
 569         start_lttng_sessiond_opt 1 "$@"
 570 }
 571
 572 function start_lttng_sessiond_notap()
 573 {
 574         start_lttng_sessiond_opt 0 "$@"
 575 }
 576
 577 function stop_lttng_sessiond_opt()
 578 {
 579         local withtap=$1
 580         local signal=$2
 581
 582         if [ -z "$signal" ]; then
 583                 signal=SIGTERM
 584         fi
 585
 586         local timeout_s=$3
 587         local dtimeleft_s=
 588
 589         # Multiply time by 2 to simplify integer arithmetic
 590         if [ -n "$timeout_s" ]; then
 591                 dtimeleft_s=$((timeout_s * 2))
 592         fi
 593
 594         if [ -n "$TEST_NO_SESSIOND" ] && [ "$TEST_NO_SESSIOND" == "1" ]; then
 595                 # Env variable requested no session daemon
 596                 return 0
 597         fi
 598
 599         local retval=0
 600
 601         local runas_pids=
 602         runas_pids=$(pgrep "$RUNAS_MATCH")
 603
 604         local pids=
 605         pids=$(pgrep "$SESSIOND_MATCH")
 606
 607         if [ -n "$runas_pids" ]; then
 608                 pids="$pids $runas_pids"
 609         fi
 610
 611         if [ -z "$pids" ]; then
 612                 if [ "$withtap" -eq "1" ]; then
 613                         pass "No session daemon to kill"
 614                 fi
 615                 return 0
 616         fi
 617
 618         diag "Killing (signal $signal) $SESSIOND_BIN and lt-$SESSIOND_BIN pids: $(echo "$pids" | tr '\n' ' ')"
 619
 620         # shellcheck disable=SC2086
 621         if ! kill -s $signal $pids 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST; then
 622                 retval=1
 623                 if [ "$withtap" -eq "1" ]; then
 624                         fail "Kill sessions daemon"
 625                 fi
 626         else
 627                 out=1
 628                 while [ -n "$out" ]; do
 629                         out=$(pgrep "${SESSIOND_MATCH}")
 630                         if [ -n "$dtimeleft_s" ]; then
 631                                 if [ $dtimeleft_s -lt 0 ]; then
 632                                         out=
 633                                         retval=1
 634                                 fi
 635                                 dtimeleft_s=$((dtimeleft_s - 1))
 636                         fi
 637                         sleep 0.5
 638                 done
 639                 out=1
 640                 while [ -n "$out" ]; do
 641                         out=$(pgrep "$CONSUMERD_MATCH")
 642                         if [ -n "$dtimeleft_s" ]; then
 643                                 if [ $dtimeleft_s -lt 0 ]; then
 644                                         out=
 645                                         retval=1
 646                                 fi
 647                                 dtimeleft_s=$((dtimeleft_s - 1))
 648                         fi
 649                         sleep 0.5
 650                 done
 651
 652                 if [ "$withtap" -eq "1" ]; then
 653                         if [ "$retval" -eq "0" ]; then
 654                                 pass "Wait after kill session daemon"
 655                         else
 656                                 fail "Wait after kill session daemon"
 657                         fi
 658                 fi
 659         fi
 660         if [ "$signal" = "SIGKILL" ]; then
 661                 if [ "$(id -u)" -eq "0" ]; then
 662                         local modules=
 663                         modules="$(lsmod | grep ^lttng | awk '{print $1}')"
 664
 665                         if [ -n "$modules" ]; then
 666                                 diag "Unloading all LTTng modules"
 667                                 modprobe -r "$modules"
 668                         fi
 669                 fi
 670         fi
 671
 672         return $retval
 673 }
 674
 675 function stop_lttng_sessiond()
 676 {
 677         stop_lttng_sessiond_opt 1 "$@"
 678 }
 679
 680 function stop_lttng_sessiond_notap()
 681 {
 682         stop_lttng_sessiond_opt 0 "$@"
 683 }
 684
 685 function sigstop_lttng_sessiond_opt()
 686 {
 687         local withtap=$1
 688         local signal=SIGSTOP
 689
 690         if [ -n "$TEST_NO_SESSIOND" ] && [ "$TEST_NO_SESSIOND" == "1" ]; then
 691                 # Env variable requested no session daemon
 692                 return
 693         fi
 694
 695         PID_SESSIOND="$(pgrep "${SESSIOND_MATCH}") $(pgrep "$RUNAS_MATCH")"
 696
 697         if [ "$withtap" -eq "1" ]; then
 698                 diag "Sending SIGSTOP to lt-$SESSIOND_BIN and $SESSIOND_BIN pids: $(echo "$PID_SESSIOND" | tr '\n' ' ')"
 699         fi
 700
 701         # shellcheck disable=SC2086
 702         if ! kill -s $signal $PID_SESSIOND 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST; then
 703                 if [ "$withtap" -eq "1" ]; then
 704                         fail "Sending SIGSTOP to session daemon"
 705                 fi
 706         else
 707                 out=1
 708                 while [ $out -ne 0 ]; do
 709                         pid="$(pgrep "$SESSIOND_MATCH")"
 710
 711                         # Wait until state becomes stopped for session
 712                         # daemon(s).
 713                         out=0
 714                         for sessiond_pid in $pid; do
 715                                 state="$(ps -p "$sessiond_pid" -o state= )"
 716                                 if [[ -n "$state" && "$state" != "T" ]]; then
 717                                         out=1
 718                                 fi
 719                         done
 720                         sleep 0.5
 721                 done
 722                 if [ "$withtap" -eq "1" ]; then
 723                         pass "Sending SIGSTOP to session daemon"
 724                 fi
 725         fi
 726 }
 727
 728 function sigstop_lttng_sessiond()
 729 {
 730         sigstop_lttng_sessiond_opt 1 "$@"
 731 }
 732
 733 function sigstop_lttng_sessiond_notap()
 734 {
 735         sigstop_lttng_sessiond_opt 0 "$@"
 736 }
 737
 738 function stop_lttng_consumerd_opt()
 739 {
 740         local withtap=$1
 741         local signal=$2
 742
 743         if [ -z "$signal" ]; then
 744                 signal=SIGTERM
 745         fi
 746
 747         local timeout_s=$3
 748         local dtimeleft_s=
 749
 750         # Multiply time by 2 to simplify integer arithmetic
 751         if [ -n "$timeout_s" ]; then
 752                 dtimeleft_s=$((timeout_s * 2))
 753         fi
 754
 755         local retval=0
 756
 757         PID_CONSUMERD="$(pgrep "$CONSUMERD_MATCH")"
 758
 759         if [ -z "$PID_CONSUMERD" ]; then
 760                 if [ "$withtap" -eq "1" ]; then
 761                         pass "No consumer daemon to kill"
 762                 fi
 763                 return 0
 764         fi
 765
 766         diag "Killing (signal $signal) $CONSUMERD_BIN pids: $(echo "$PID_CONSUMERD" | tr '\n' ' ')"
 767
 768         # shellcheck disable=SC2086
 769         if ! kill -s $signal $PID_CONSUMERD 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST; then
 770                 retval=1
 771                 if [ "$withtap" -eq "1" ]; then
 772                         fail "Kill consumer daemon"
 773                 fi
 774         else
 775                 out=1
 776                 while [ $out -ne 0 ]; do
 777                         pid="$(pgrep "$CONSUMERD_MATCH")"
 778
 779                         # If consumerds are still present check their status.
 780                         # A zombie status qualifies the consumerd as *killed*
 781                         out=0
 782                         for consumer_pid in $pid; do
 783                                 state="$(ps -p "$consumer_pid" -o state= )"
 784                                 if [[ -n "$state" && "$state" != "Z" ]]; then
 785                                         out=1
 786                                 fi
 787                         done
 788                         if [ -n "$dtimeleft_s" ]; then
 789                                 if [ $dtimeleft_s -lt 0 ]; then
 790                                         out=0
 791                                         retval=1
 792                                 fi
 793                                 dtimeleft_s=$((dtimeleft_s - 1))
 794                         fi
 795                         sleep 0.5
 796                 done
 797                 if [ "$withtap" -eq "1" ]; then
 798                         if [ "$retval" -eq "0" ]; then
 799                                 pass "Wait after kill consumer daemon"
 800                         else
 801                                 fail "Wait after kill consumer daemon"
 802                         fi
 803                 fi
 804         fi
 805
 806         return $retval
 807 }
 808
 809 function stop_lttng_consumerd()
 810 {
 811         stop_lttng_consumerd_opt 1 "$@"
 812 }
 813
 814 function stop_lttng_consumerd_notap()
 815 {
 816         stop_lttng_consumerd_opt 0 "$@"
 817 }
 818
 819 function sigstop_lttng_consumerd_opt()
 820 {
 821         local withtap=$1
 822         local signal=SIGSTOP
 823
 824         PID_CONSUMERD="$(pgrep "$CONSUMERD_MATCH")"
 825
 826         diag "Sending SIGSTOP to $CONSUMERD_BIN pids: $(echo "$PID_CONSUMERD" | tr '\n' ' ')"
 827
 828         # shellcheck disable=SC2086
 829         kill -s $signal $PID_CONSUMERD 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 830         retval=$?
 831
 832         if [ $retval -eq 1 ]; then
 833                 if [ "$withtap" -eq "1" ]; then
 834                         fail "Sending SIGSTOP to consumer daemon"
 835                 fi
 836                 return 1
 837         else
 838                 out=1
 839                 while [ $out -ne 0 ]; do
 840                         pid="$(pgrep "$CONSUMERD_MATCH")"
 841
 842                         # Wait until state becomes stopped for all
 843                         # consumers.
 844                         out=0
 845                         for consumer_pid in $pid; do
 846                                 state="$(ps -p "$consumer_pid" -o state= )"
 847                                 if [[ -n "$state" && "$state" != "T" ]]; then
 848                                         out=1
 849                                 fi
 850                         done
 851                         sleep 0.5
 852                 done
 853                 if [ "$withtap" -eq "1" ]; then
 854                         pass "Sending SIGSTOP to consumer daemon"
 855                 fi
 856         fi
 857         return $retval
 858 }
 859
 860 function sigstop_lttng_consumerd()
 861 {
 862         sigstop_lttng_consumerd_opt 1 "$@"
 863 }
 864
 865 function sigstop_lttng_consumerd_notap()
 866 {
 867         sigstop_lttng_consumerd_opt 0 "$@"
 868 }
 869
 870 function list_lttng_with_opts ()
 871 {
 872         local opts=$1
 873         $TESTDIR/../src/bin/lttng/$LTTNG_BIN list $opts 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 874         ok $? "Lttng-tool list command with option $opts"
 875 }
 876
 877 function create_lttng_session_no_output ()
 878 {
 879         local sess_name=$1
 880         local opts="${@:2}"
 881
 882         $TESTDIR/../src/bin/lttng/$LTTNG_BIN create $sess_name --no-output $opts 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 883         ok $? "Create session $sess_name in no-output mode"
 884 }
 885
 886 function create_lttng_session_uri () {
 887         local sess_name=$1
 888         local uri=$2
 889         local opts="${@:3}"
 890
 891         $TESTDIR/../src/bin/lttng/$LTTNG_BIN create $sess_name -U $uri $opts 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 892         ok $? "Create session $sess_name with uri:$uri and opts: $opts"
 893 }
 894
 895 function create_lttng_session ()
 896 {
 897         local withtap=$1
 898         local expected_to_fail=$2
 899         local sess_name=$3
 900         local trace_path=$4
 901         local opt=$5
 902
 903         if [ -z "$trace_path" ]; then
 904                 # Use lttng-sessiond default output.
 905                 trace_path=""
 906         else
 907                 trace_path="-o $trace_path"
 908         fi
 909
 910         $TESTDIR/../src/bin/lttng/$LTTNG_BIN create "$sess_name" $trace_path $opt 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 911         ret=$?
 912         if [ $expected_to_fail -eq "1" ]; then
 913                 test "$ret" -ne "0"
 914                 ret=$?
 915                 if [ $withtap -eq "1" ]; then
 916                         ok $ret "Create session $sess_name in $trace_path failed as expected"
 917                 fi
 918         else
 919                 if [ $withtap -eq "1" ]; then
 920                         ok $ret "Create session $sess_name in $trace_path"
 921                 fi
 922         fi
 923         return $ret
 924 }
 925
 926 function create_lttng_session_ok ()
 927 {
 928         create_lttng_session 1 0 "$@"
 929 }
 930
 931 function create_lttng_session_fail ()
 932 {
 933         create_lttng_session 1 1 "$@"
 934 }
 935
 936 function create_lttng_session_notap ()
 937 {
 938         create_lttng_session 0 0 "$@"
 939 }
 940
 941
 942 function enable_ust_lttng_channel ()
 943 {
 944         local withtap=$1
 945         local expected_to_fail=$2
 946         local sess_name=$3
 947         local channel_name=$4
 948         local opts="${@:5}"
 949
 950         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -u $channel_name -s $sess_name $opts 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 951         ret=$?
 952         if [[ $expected_to_fail -eq "1" ]]; then
 953                 test "$ret" -ne "0"
 954                 ret=$?
 955                 if [ $withtap -eq "1" ]; then
 956                         ok $ret "Enable channel $channel_name for session $sess_name failed as expected"
 957                 fi
 958         else
 959                 if [ $withtap -eq "1" ]; then
 960                         ok $ret "Enable channel $channel_name for session $sess_name"
 961                 fi
 962         fi
 963         return $ret
 964 }
 965
 966 function enable_ust_lttng_channel_ok ()
 967 {
 968         enable_ust_lttng_channel 1 0 "$@"
 969 }
 970
 971 function enable_ust_lttng_channel_fail ()
 972 {
 973         enable_ust_lttng_channel 1 1 "$@"
 974 }
 975
 976 function enable_ust_lttng_channel_notap ()
 977 {
 978         enable_ust_lttng_channel 0 0 "$@"
 979 }
 980
 981 function disable_ust_lttng_channel()
 982 {
 983         local sess_name=$1
 984         local channel_name=$2
 985
 986         $TESTDIR/../src/bin/lttng/$LTTNG_BIN disable-channel -u $channel_name -s $sess_name 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 987         ok $? "Disable channel $channel_name for session $sess_name"
 988 }
 989
 990 function enable_lttng_mmap_overwrite_kernel_channel()
 991 {
 992         local sess_name=$1
 993         local channel_name=$2
 994
 995         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -s $sess_name $channel_name -k --output mmap --overwrite 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 996         ok $? "Enable channel $channel_name for session $sess_name"
 997 }
 998
 999 function enable_lttng_mmap_discard_small_kernel_channel()
1000 {
1001         local sess_name=$1
1002         local channel_name=$2
1003
1004         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -s $sess_name $channel_name -k --output mmap --discard --subbuf-size=$(getconf PAGE_SIZE) --num-subbuf=2 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1005         ok $? "Enable small discard channel $channel_name for session $sess_name"
1006 }
1007
1008 function enable_lttng_mmap_overwrite_small_kernel_channel()
1009 {
1010         local sess_name=$1
1011         local channel_name=$2
1012
1013         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -s $sess_name $channel_name -k --output mmap --overwrite --subbuf-size=$(getconf PAGE_SIZE) --num-subbuf=2 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1014         ok $? "Enable small discard channel $channel_name for session $sess_name"
1015 }
1016
1017 function enable_lttng_mmap_overwrite_ust_channel()
1018 {
1019         local sess_name=$1
1020         local channel_name=$2
1021
1022         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -s $sess_name $channel_name -u --output mmap --overwrite 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1023         ok $? "Enable channel $channel_name for session $sess_name"
1024 }
1025
1026 function enable_ust_lttng_event ()
1027 {
1028         local withtap=$1
1029         local expected_to_fail=$2
1030         local sess_name=$3
1031         local event_name="$4"
1032         local channel_name=$5
1033
1034         if [ -z $channel_name ]; then
1035                 # default channel if none specified
1036                 chan=""
1037         else
1038                 chan="-c $channel_name"
1039         fi
1040
1041         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" $chan -s $sess_name -u 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1042         ret=$?
1043         if [[ $expected_to_fail -eq "1" ]]; then
1044                 test $ret -ne "0"
1045                 ret=$?
1046                 if [[ $withtap -eq "1" ]]; then
1047                         ok $ret "Enable ust event $event_name for session $session_name failed as expected"
1048                 fi
1049         else
1050                 if [[ $withtap -eq "1" ]]; then
1051                         ok $ret "Enable ust event $event_name for session $sess_name"
1052                 fi
1053         fi
1054         return $ret
1055 }
1056
1057 function enable_ust_lttng_event_ok ()
1058 {
1059         enable_ust_lttng_event 1 0 "$@"
1060 }
1061
1062 function enable_ust_lttng_event_fail ()
1063 {
1064         enable_ust_lttng_event 1 1 "$@"
1065 }
1066
1067 function enable_ust_lttng_event_notap ()
1068 {
1069         enable_ust_lttng_event 0 0 "$@"
1070 }
1071
1072 function enable_jul_lttng_event()
1073 {
1074         sess_name=$1
1075         event_name="$2"
1076         channel_name=$3
1077
1078         if [ -z $channel_name ]; then
1079                 # default channel if none specified
1080                 chan=""
1081         else
1082                 chan="-c $channel_name"
1083         fi
1084
1085         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" $chan -s $sess_name -j 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1086         ok $? "Enable JUL event $event_name for session $sess_name"
1087 }
1088
1089 function enable_jul_lttng_event_loglevel()
1090 {
1091         local sess_name=$1
1092         local event_name="$2"
1093         local loglevel=$3
1094         local channel_name=$4
1095
1096         if [ -z $channel_name ]; then
1097                 # default channel if none specified
1098                 chan=""
1099         else
1100                 chan="-c $channel_name"
1101         fi
1102
1103         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event --loglevel $loglevel "$event_name" $chan -s $sess_name -j 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1104         ok $? "Enable JUL event $event_name for session $sess_name with loglevel $loglevel"
1105 }
1106
1107 function enable_log4j_lttng_event()
1108 {
1109         sess_name=$1
1110         event_name="$2"
1111         channel_name=$3
1112
1113         if [ -z $channel_name ]; then
1114                 # default channel if none specified
1115                 chan=""
1116         else
1117                 chan="-c $channel_name"
1118         fi
1119
1120         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" $chan -s $sess_name -l 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1121         ok $? "Enable LOG4J event $event_name for session $sess_name"
1122 }
1123
1124 function enable_log4j_lttng_event_loglevel()
1125 {
1126         local sess_name=$1
1127         local event_name="$2"
1128         local loglevel=$3
1129         local channel_name=$4
1130
1131         if [ -z $channel_name ]; then
1132                 # default channel if none specified
1133                 chan=""
1134         else
1135                 chan="-c $channel_name"
1136         fi
1137
1138         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event --loglevel $loglevel "$event_name" $chan -s $sess_name -l 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1139         ok $? "Enable LOG4J event $event_name for session $sess_name with loglevel $loglevel"
1140 }
1141
1142 function enable_python_lttng_event()
1143 {
1144         sess_name=$1
1145         event_name="$2"
1146         channel_name=$3
1147
1148         if [ -z $channel_name ]; then
1149                 # default channel if none specified
1150                 chan=""
1151         else
1152                 chan="-c $channel_name"
1153         fi
1154
1155         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" $chan -s $sess_name -p 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1156         ok $? "Enable Python event $event_name for session $sess_name"
1157 }
1158
1159 function enable_python_lttng_event_loglevel()
1160 {
1161         local sess_name=$1
1162         local event_name="$2"
1163         local loglevel=$3
1164         local channel_name=$4
1165
1166         if [ -z $channel_name ]; then
1167                 # default channel if none specified
1168                 chan=""
1169         else
1170                 chan="-c $channel_name"
1171         fi
1172
1173         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event --loglevel $loglevel "$event_name" $chan -s $sess_name -p 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1174         ok $? "Enable Python event $event_name for session $sess_name with loglevel $loglevel"
1175 }
1176
1177 function enable_ust_lttng_event_filter()
1178 {
1179         local sess_name="$1"
1180         local event_name="$2"
1181         local filter="$3"
1182
1183         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" -s $sess_name -u --filter "$filter" 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1184         ok $? "Enable event $event_name with filtering for session $sess_name"
1185 }
1186
1187 function enable_ust_lttng_event_loglevel()
1188 {
1189         local sess_name="$1"
1190         local event_name="$2"
1191         local loglevel="$3"
1192
1193         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" -s $sess_name -u --loglevel $loglevel 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1194         ok $? "Enable event $event_name with loglevel $loglevel"
1195 }
1196
1197 function enable_ust_lttng_event_loglevel_only()
1198 {
1199         local sess_name="$1"
1200         local event_name="$2"
1201         local loglevel="$3"
1202
1203         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" -s $sess_name -u --loglevel-only $loglevel 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1204         ok $? "Enable event $event_name with loglevel-only $loglevel"
1205 }
1206
1207 function disable_ust_lttng_event ()
1208 {
1209         local sess_name="$1"
1210         local event_name="$2"
1211         local channel_name="$3"
1212
1213         if [ -z $channel_name ]; then
1214                 # default channel if none specified
1215                 chan=""
1216         else
1217                 chan="-c $channel_name"
1218         fi
1219
1220         $TESTDIR/../src/bin/lttng/$LTTNG_BIN disable-event "$event_name" -s $sess_name $chan -u 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1221         ok $? "Disable event $event_name for session $sess_name"
1222 }
1223
1224 function disable_jul_lttng_event ()
1225 {
1226         local sess_name="$1"
1227         local event_name="$2"
1228
1229         $TESTDIR/../src/bin/lttng/$LTTNG_BIN disable-event "$event_name" -s $sess_name -j >/dev/null 2>&1
1230         ok $? "Disable JUL event $event_name for session $sess_name"
1231 }
1232
1233 function disable_log4j_lttng_event ()
1234 {
1235         local sess_name="$1"
1236         local event_name="$2"
1237
1238         $TESTDIR/../src/bin/lttng/$LTTNG_BIN disable-event "$event_name" -s $sess_name -l >/dev/null 2>&1
1239         ok $? "Disable LOG4J event $event_name for session $sess_name"
1240 }
1241
1242 function disable_python_lttng_event ()
1243 {
1244         local sess_name="$1"
1245         local event_name="$2"
1246
1247         $TESTDIR/../src/bin/lttng/$LTTNG_BIN disable-event "$event_name" -s $sess_name -p 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1248         ok $? "Disable Python event $event_name for session $sess_name"
1249 }
1250
1251 function start_lttng_tracing_opt ()
1252 {
1253         local withtap=$1
1254         local expected_to_fail=$2
1255         local sess_name=$3
1256
1257         $TESTDIR/../src/bin/lttng/$LTTNG_BIN start $sess_name 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1258         ret=$?
1259         if [[ $expected_to_fail -eq "1" ]]; then
1260                 test "$ret" -ne "0"
1261                 ret=$?
1262                 if [ $withtap -eq "1" ]; then
1263                         ok $? "Start tracing for session $sess_name failed as expected"
1264                 fi
1265         else
1266                 if [ $withtap -eq "1" ]; then
1267                         ok $ret "Start tracing for session $sess_name"
1268                 fi
1269         fi
1270 }
1271
1272 function start_lttng_tracing_ok ()
1273 {
1274         start_lttng_tracing_opt 1 0 "$@"
1275 }
1276
1277 function start_lttng_tracing_fail ()
1278 {
1279         start_lttng_tracing_opt 1 1 "$@"
1280 }
1281
1282 function start_lttng_tracing_notap ()
1283 {
1284         start_lttng_tracing_opt 0 1 "$@"
1285 }
1286
1287 function stop_lttng_tracing_opt ()
1288 {
1289         local withtap=$1
1290         local expected_to_fail=$2
1291         local sess_name=$3
1292
1293         $TESTDIR/../src/bin/lttng/$LTTNG_BIN stop $sess_name 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1294         ret=$?
1295         if [[ $expected_to_fail -eq "1" ]]; then
1296                 test "$ret" -ne "0"
1297                 ret=$?
1298                 if [ $withtap -eq "1" ]; then
1299                         ok $? "Stop lttng tracing for session $sess_name failed as expected"
1300                 fi
1301         else
1302                 if [ $withtap -eq "1" ]; then
1303                         ok $ret "Stop lttng tracing for session $sess_name"
1304                 fi
1305         fi
1306 }
1307
1308 function stop_lttng_tracing_ok ()
1309 {
1310         stop_lttng_tracing_opt 1 0 "$@"
1311 }
1312
1313 function stop_lttng_tracing_fail ()
1314 {
1315         stop_lttng_tracing_opt 1 1 "$@"
1316 }
1317
1318 function stop_lttng_tracing_notap ()
1319 {
1320         stop_lttng_tracing_opt 0 0 "$@"
1321 }
1322
1323 function destroy_lttng_session ()
1324 {
1325         local withtap=$1
1326         local expected_to_fail=$2
1327         local sess_name=$3
1328
1329         $TESTDIR/../src/bin/lttng/$LTTNG_BIN destroy $sess_name 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1330         ret=$?
1331         if [[ $expected_to_fail -eq "1" ]]; then
1332                 test "$ret" -ne "0"
1333                 ret=$?
1334                 if [ $withtap -eq "1" ]; then
1335                         ok $ret "Destroy session $sess_name failed as expected"
1336                 fi
1337         else
1338                 if [ $withtap -eq "1" ]; then
1339                         ok $ret "Destroy session $sess_name"
1340                 fi
1341         fi
1342 }
1343
1344 function destroy_lttng_session_ok ()
1345 {
1346         destroy_lttng_session 1 0 "$@"
1347
1348 }
1349
1350 function destroy_lttng_session_fail ()
1351 {
1352         destroy_lttng_session 1 1 "$@"
1353 }
1354
1355 function destroy_lttng_session_notap ()
1356 {
1357         destroy_lttng_session 0 0 "$@"
1358 }
1359
1360 function destroy_lttng_sessions ()
1361 {
1362         $TESTDIR/../src/bin/lttng/$LTTNG_BIN destroy --all 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1363         ok $? "Destroy all lttng sessions"
1364 }
1365
1366 function lttng_snapshot_add_output ()
1367 {
1368         local expected_to_fail=$1
1369         local sess_name=$2
1370         local trace_path=$3
1371         local opts=$4
1372
1373         $TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot add-output -s $sess_name $trace_path $opts 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1374         ret=$?
1375         if [[ $expected_to_fail -eq 1 ]]; then
1376                 test "$ret" -ne "0"
1377                 ok $? "Added snapshot output $trace_path failed as expected"
1378         else
1379                 ok $ret "Added snapshot output $trace_path"
1380         fi
1381 }
1382
1383 function lttng_snapshot_add_output_ok ()
1384 {
1385         lttng_snapshot_add_output 0 "$@"
1386 }
1387
1388 function lttng_snapshot_add_output_fail ()
1389 {
1390         lttng_snapshot_add_output 1 "$@"
1391 }
1392
1393 function lttng_snapshot_del_output ()
1394 {
1395         local expected_to_fail=$1
1396         local sess_name=$2
1397         local id=$3
1398
1399         $TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot del-output -s $sess_name $id 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1400         ret=$?
1401         if [[ $expected_to_fail -eq "1" ]]; then
1402                 test "$ret" -ne "0"
1403                 ok $? "Deleted snapshot output id $id failed as expected"
1404         else
1405                 ok $ret "Deleted snapshot output id $id"
1406         fi
1407 }
1408
1409 function lttng_snapshot_del_output_ok ()
1410 {
1411         lttng_snapshot_del_output 0 "$@"
1412 }
1413
1414 function lttng_snapshot_del_output_fail ()
1415 {
1416         lttng_snapshot_del_output 1 "$@"
1417 }
1418
1419 function lttng_snapshot_record ()
1420 {
1421         local sess_name=$1
1422
1423         $TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot record -s $sess_name $trace_path 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1424         ok $? "Snapshot recorded"
1425 }
1426
1427 function lttng_snapshot_list ()
1428 {
1429         local sess_name=$1
1430         $TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot list-output -s $sess_name 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1431         ok $? "Snapshot list"
1432 }
1433
1434 function lttng_save()
1435 {
1436         local sess_name=$1
1437         local opts=$2
1438
1439         $TESTDIR/../src/bin/lttng/$LTTNG_BIN save $sess_name $opts 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1440         ok $? "Session saved"
1441 }
1442
1443 function lttng_load()
1444 {
1445         local expected_to_fail=$1
1446         local opts=$2
1447
1448         $TESTDIR/../src/bin/lttng/$LTTNG_BIN load $opts 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1449         ret=$?
1450         if [[ $expected_to_fail -eq "1" ]]; then
1451                 test $ret -ne "0"
1452                 ok $? "Load command failed as expected with opts: $opts"
1453         else
1454                 ok $ret "Load command with opts: $opts"
1455         fi
1456 }
1457
1458 function lttng_load_ok()
1459 {
1460         lttng_load 0 "$@"
1461 }
1462
1463 function lttng_load_fail()
1464 {
1465         lttng_load 1 "$@"
1466 }
1467
1468 function lttng_track()
1469 {
1470         local expected_to_fail="$1"
1471         shift 1
1472         local opts="$@"
1473         $TESTDIR/../src/bin/lttng/$LTTNG_BIN track $opts >$OUTPUT_DEST
1474         ret=$?
1475         if [[ $expected_to_fail -eq "1" ]]; then
1476                 test $ret -ne "0"
1477                 ok $? "Track command failed as expected with opts: $opts"
1478         else
1479                 ok $ret "Track command with opts: $opts"
1480         fi
1481 }
1482
1483 function lttng_track_ok()
1484 {
1485         lttng_track 0 "$@"
1486 }
1487
1488 function lttng_track_fail()
1489 {
1490         lttng_track 1 "$@"
1491 }
1492
1493 function lttng_untrack()
1494 {
1495         local expected_to_fail="$1"
1496         shift 1
1497         local opts="$@"
1498         $TESTDIR/../src/bin/lttng/$LTTNG_BIN untrack $opts >$OUTPUT_DEST
1499         ret=$?
1500         if [[ $expected_to_fail -eq "1" ]]; then
1501                 test $ret -ne "0"
1502                 ok $? "Untrack command failed as expected with opts: $opts"
1503         else
1504                 ok $ret "Untrack command with opts: $opts"
1505         fi
1506 }
1507
1508 function lttng_untrack_ok()
1509 {
1510         lttng_untrack 0 "$@"
1511 }
1512
1513 function lttng_untrack_fail()
1514 {
1515         lttng_untrack 1 "$@"
1516 }
1517
1518 function lttng_track_pid_ok()
1519 {
1520         PID=$1
1521         "$TESTDIR/../src/bin/lttng/$LTTNG_BIN" track --kernel --pid=$PID 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1522         ok $? "Lttng track pid on the kernel domain"
1523 }
1524
1525 function lttng_untrack_kernel_all_ok()
1526 {
1527         "$TESTDIR/../src/bin/lttng/$LTTNG_BIN" untrack --kernel --pid --all 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1528         ok $? "Lttng untrack all pid on the kernel domain"
1529 }
1530
1531 function lttng_track_ust_ok()
1532 {
1533         lttng_track_ok -u "$@"
1534 }
1535
1536 function lttng_track_ust_fail()
1537 {
1538         lttng_track_fail -u "$@"
1539 }
1540
1541 function lttng_track_kernel_ok()
1542 {
1543         lttng_track_ok -k "$@"
1544 }
1545
1546 function lttng_track_kernel_fail()
1547 {
1548         lttng_track_fail -k "$@"
1549 }
1550
1551 function lttng_untrack_ust_ok()
1552 {
1553         lttng_untrack_ok -u "$@"
1554 }
1555
1556 function lttng_untrack_ust_fail()
1557 {
1558         lttng_untrack_fail -u "$@"
1559 }
1560
1561 function lttng_untrack_kernel_ok()
1562 {
1563         lttng_untrack_ok -k "$@"
1564 }
1565
1566 function lttng_untrack_kernel_fail()
1567 {
1568         lttng_untrack_fail -k "$@"
1569 }
1570
1571 function lttng_add_context_list()
1572 {
1573         $TESTDIR/../src/bin/lttng/$LTTNG_BIN add-context --list 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1574         ret=$?
1575         ok $ret "Context listing"
1576 }
1577
1578 function add_context_lttng()
1579 {
1580         local expected_to_fail="$1"
1581         local domain="$2"
1582         local session_name="$3"
1583         local channel_name="$4"
1584         local type="$5"
1585
1586         $TESTDIR/../src/bin/lttng/$LTTNG_BIN add-context -s $session_name -c $channel_name -t $type $domain  1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1587         ret=$?
1588         if [[ $expected_to_fail -eq "1" ]]; then
1589                 test $ret -ne "0"
1590                 ok $? "Add context command failed as expected for type: $type"
1591         else
1592                 ok $ret "Add context command for type: $type"
1593         fi
1594 }
1595
1596 function add_context_ust_ok()
1597 {
1598         add_context_lttng 0 -u "$@"
1599 }
1600
1601 function add_context_ust_fail()
1602 {
1603         add_context_lttng 1 -u "$@"
1604 }
1605
1606 function add_context_kernel_ok()
1607 {
1608         add_context_lttng 0 -k "$@"
1609 }
1610
1611 function add_context_kernel_fail()
1612 {
1613         add_context_lttng 1 -k "$@"
1614 }
1615
1616 function wait_live_trace_ready ()
1617 {
1618         local url=$1
1619         local zero_client_match=0
1620
1621         diag "Waiting for live trace at url: $url"
1622         while [ $zero_client_match -eq 0 ]; do
1623                 zero_client_match=$($BABELTRACE_BIN -i lttng-live $url | grep "0 client(s) connected" | wc -l)
1624                 sleep 0.5
1625         done
1626         pass "Waiting for live trace at url: $url"
1627 }
1628
1629 function wait_live_viewer_connect ()
1630 {
1631         local url=$1
1632         local one_client_match=0
1633
1634         diag "Waiting for live viewers on url: $url"
1635         while [ $one_client_match -eq 0 ]; do
1636                 one_client_match=$($BABELTRACE_BIN -i lttng-live $url | grep "1 client(s) connected" | wc -l)
1637                 sleep 0.5
1638         done
1639         pass "Waiting for live viewers on url: $url"
1640 }
1641
1642 function validate_metadata_event ()
1643 {
1644         local event_name=$1
1645         local nr_event_id=$2
1646         local trace_path=$3
1647
1648         local metadata_file=$(find $trace_path | grep metadata)
1649         local metadata_path=$(dirname $metadata_file)
1650
1651         which $BABELTRACE_BIN >/dev/null
1652         skip $? -ne 0 "Babeltrace binary not found. Skipping trace matches"
1653
1654         local count=$($BABELTRACE_BIN --output-format=ctf-metadata $metadata_path | grep $event_name | wc -l)
1655
1656         if [ "$count" -ne "$nr_event_id" ]; then
1657                 fail "Metadata match with the metadata of $count event(s) named $event_name"
1658                 diag "$count matching event id found in metadata"
1659         else
1660                 pass "Metadata match with the metadata of $count event(s) named $event_name"
1661         fi
1662
1663 }
1664
1665 function trace_matches ()
1666 {
1667         local event_name=$1
1668         local nr_iter=$2
1669         local trace_path=$3
1670
1671         which $BABELTRACE_BIN >/dev/null
1672         skip $? -ne 0 "Babeltrace binary not found. Skipping trace matches"
1673
1674         local count=$($BABELTRACE_BIN $trace_path | grep $event_name | wc -l)
1675
1676         if [ "$count" -ne "$nr_iter" ]; then
1677                 fail "Trace match"
1678                 diag "$count matching events found in trace"
1679         else
1680                 pass "Trace match"
1681         fi
1682 }
1683
1684 function trace_match_only()
1685 {
1686         local event_name=$1
1687         local nr_iter=$2
1688         local trace_path=$3
1689
1690         which $BABELTRACE_BIN >/dev/null
1691         skip $? -ne 0 "Babeltrace binary not found. Skipping trace matches"
1692
1693         local count=$($BABELTRACE_BIN $trace_path | grep $event_name | wc -l)
1694         local total=$($BABELTRACE_BIN $trace_path | wc -l)
1695
1696         if [ "$nr_iter" -eq "$count" ] && [ "$total" -eq "$nr_iter" ]; then
1697                 pass "Trace match with $total event $event_name"
1698         else
1699                 fail "Trace match"
1700                 diag "$total event(s) found, expecting $nr_iter of event $event_name and only found $count"
1701         fi
1702 }
1703
1704 function validate_trace
1705 {
1706         local event_name=$1
1707         local trace_path=$2
1708
1709         which $BABELTRACE_BIN >/dev/null
1710         if [ $? -ne 0 ]; then
1711             skip 0 "Babeltrace binary not found. Skipping trace validation"
1712         fi
1713
1714         OLDIFS=$IFS
1715         IFS=","
1716         for i in $event_name; do
1717                 traced=$($BABELTRACE_BIN $trace_path 2>/dev/null | grep $i | wc -l)
1718                 if [ "$traced" -ne 0 ]; then
1719                         pass "Validate trace for event $i, $traced events"
1720                 else
1721                         fail "Validate trace for event $i"
1722                         diag "Found $traced occurences of $i"
1723                 fi
1724         done
1725         ret=$?
1726         IFS=$OLDIFS
1727         return $ret
1728 }
1729
1730 function validate_trace_count
1731 {
1732         local event_name=$1
1733         local trace_path=$2
1734         local expected_count=$3
1735
1736         which $BABELTRACE_BIN >/dev/null
1737         if [ $? -ne 0 ]; then
1738             skip 0 "Babeltrace binary not found. Skipping trace validation"
1739         fi
1740
1741         cnt=0
1742         OLDIFS=$IFS
1743         IFS=","
1744         for i in $event_name; do
1745                 traced=$($BABELTRACE_BIN $trace_path 2>/dev/null | grep $i | wc -l)
1746                 if [ "$traced" -ne 0 ]; then
1747                         pass "Validate trace for event $i, $traced events"
1748                 else
1749                         fail "Validate trace for event $i"
1750                         diag "Found $traced occurences of $i"
1751                 fi
1752                 cnt=$(($cnt + $traced))
1753         done
1754         IFS=$OLDIFS
1755         test $cnt -eq $expected_count
1756         ok $? "Read a total of $cnt events, expected $expected_count"
1757 }
1758
1759 function validate_trace_count_range_incl_min_excl_max
1760 {
1761         local event_name=$1
1762         local trace_path=$2
1763         local expected_min=$3
1764         local expected_max=$4
1765
1766         which $BABELTRACE_BIN >/dev/null
1767         if [ $? -ne 0 ]; then
1768             skip 0 "Babeltrace binary not found. Skipping trace validation"
1769         fi
1770
1771         cnt=0
1772         OLDIFS=$IFS
1773         IFS=","
1774         for i in $event_name; do
1775                 traced=$($BABELTRACE_BIN $trace_path 2>/dev/null | grep $i | wc -l)
1776                 if [ "$traced" -ge $expected_min ]; then
1777                         pass "Validate trace for event $i, $traced events"
1778                 else
1779                         fail "Validate trace for event $i"
1780                         diag "Found $traced occurences of $i"
1781                 fi
1782                 cnt=$(($cnt + $traced))
1783         done
1784         IFS=$OLDIFS
1785         test $cnt -lt $expected_max
1786         ok $? "Read a total of $cnt events, expected between [$expected_min, $expected_max["
1787 }
1788
1789 function trace_first_line
1790 {
1791         local trace_path=$1
1792
1793         which $BABELTRACE_BIN >/dev/null
1794         if [ $? -ne 0 ]; then
1795             skip 0 "Babeltrace binary not found. Skipping trace validation"
1796         fi
1797
1798         $BABELTRACE_BIN $trace_path 2>/dev/null | head -n 1
1799 }
1800
1801 function validate_trace_exp()
1802 {
1803         local event_exp=$1
1804         local trace_path=$2
1805
1806         which $BABELTRACE_BIN >/dev/null
1807         skip $? -ne 0 "Babeltrace binary not found. Skipping trace validation"
1808
1809         traced=$($BABELTRACE_BIN $trace_path 2>/dev/null | grep --extended-regexp ${event_exp} | wc -l)
1810         if [ "$traced" -ne 0 ]; then
1811                 pass "Validate trace for expression '${event_exp}', $traced events"
1812         else
1813                 fail "Validate trace for expression '${event_exp}'"
1814                 diag "Found $traced occurences of '${event_exp}'"
1815         fi
1816         ret=$?
1817         return $ret
1818 }
1819
1820 function validate_trace_only_exp()
1821 {
1822         local event_exp=$1
1823         local trace_path=$2
1824
1825         which $BABELTRACE_BIN >/dev/null
1826         skip $? -ne 0 "Babeltrace binary not found. Skipping trace matches"
1827
1828         local count=$($BABELTRACE_BIN $trace_path | grep --extended-regexp ${event_exp} | wc -l)
1829         local total=$($BABELTRACE_BIN $trace_path | wc -l)
1830
1831         if [ "$count" -ne 0 ] && [ "$total" -eq "$count" ]; then
1832                 pass "Trace match with $total for expression '${event_exp}'"
1833         else
1834                 fail "Trace match"
1835                 diag "$total syscall event(s) found, only syscalls matching expression '${event_exp}' ($count occurrences) are expected"
1836         fi
1837         ret=$?
1838         return $ret
1839 }
1840
1841 function validate_trace_empty()
1842 {
1843         local trace_path=$1
1844
1845         which $BABELTRACE_BIN >/dev/null
1846         if [ $? -ne 0 ]; then
1847             skip 0 "Babeltrace binary not found. Skipping trace validation"
1848         fi
1849
1850         events=$($BABELTRACE_BIN $trace_path 2>/dev/null)
1851         ret=$?
1852         if [ $ret -ne 0 ]; then
1853                 fail "Failed to parse trace"
1854                 return $ret
1855         fi
1856
1857         traced=$(echo -n "$events" | wc -l)
1858         if [ "$traced" -eq 0 ]; then
1859                 pass "Validate empty trace"
1860         else
1861                 fail "Validate empty trace"
1862                 diag "Found $traced events in trace"
1863         fi
1864         ret=$?
1865         return $ret
1866 }
1867
1868 function validate_directory_empty ()
1869 {
1870         local trace_path="$1"
1871
1872         # Do not double quote `$trace_path` below as we want wildcards to be
1873         # expanded.
1874         files="$(ls -A $trace_path)"
1875         ret=$?
1876         if [ $ret -ne 0 ]; then
1877                 fail "Failed to list content of directory \"$trace_path\""
1878                 return $ret
1879         fi
1880
1881         nb_files="$(echo -n "$files" | wc -l)"
1882         ok $nb_files "Directory \"$trace_path\" is empty"
1883 }
1884
1885 function validate_trace_session_ust_empty()
1886 {
1887         validate_directory_empty "$1"/ust
1888 }
1889
1890 function validate_trace_session_kernel_empty()
1891 {
1892         validate_trace_empty "$1"/kernel
1893 }
1894
1895 function regenerate_metadata ()
1896 {
1897         local expected_to_fail=$1
1898         local sess_name=$2
1899
1900         $TESTDIR/../src/bin/lttng/$LTTNG_BIN regenerate metadata -s $sess_name 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1901         ret=$?
1902         if [[ $expected_to_fail -eq "1" ]]; then
1903                 test "$ret" -ne "0"
1904                 ok $? "Expected fail on regenerate metadata $sess_name"
1905         else
1906                 ok $ret "Metadata regenerate $sess_name"
1907         fi
1908 }
1909
1910 function regenerate_metadata_ok ()
1911 {
1912         regenerate_metadata 0 "$@"
1913 }
1914
1915 function regenerate_metadata_fail ()
1916 {
1917         regenerate_metadata 1 "$@"
1918 }
1919
1920 function regenerate_statedump ()
1921 {
1922         local expected_to_fail=$1
1923         local sess_name=$2
1924
1925         $TESTDIR/../src/bin/lttng/$LTTNG_BIN regenerate statedump -s $sess_name 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1926         ret=$?
1927         if [[ $expected_to_fail -eq "1" ]]; then
1928                 test "$ret" -ne "0"
1929                 ok $? "Expected fail on regenerate statedump $sess_name"
1930         else
1931                 ok $ret "Statedump regenerate $sess_name"
1932         fi
1933 }
1934
1935 function regenerate_statedump_ok ()
1936 {
1937         regenerate_statedump 0 "$@"
1938 }
1939
1940 function regenerate_statedump_fail ()
1941 {
1942         regenerate_statedump 1 "$@"
1943 }
1944
1945 function rotate_session ()
1946 {
1947         local expected_to_fail=$1
1948         local sess_name=$2
1949
1950         $TESTDIR/../src/bin/lttng/$LTTNG_BIN rotate $sess_name 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1951         ret=$?
1952         if [[ $expected_to_fail -eq "1" ]]; then
1953                 test "$ret" -ne "0"
1954                 ok $? "Expected fail on rotate session $sess_name"
1955         else
1956                 ok $ret "Rotate session $sess_name"
1957         fi
1958 }
1959
1960 function rotate_session_ok ()
1961 {
1962         rotate_session 0 "$@"
1963 }
1964
1965 function rotate_session_fail ()
1966 {
1967         rotate_session 1 "$@"
1968 }
1969
1970 function destructive_tests_enabled ()
1971 {
1972         if [ ${LTTNG_ENABLE_DESTRUCTIVE_TESTS} = "will-break-my-system" ]; then
1973                 return 0
1974         else
1975                 return 1
1976         fi
1977 }
1978
1979 function lttng_enable_rotation_timer ()
1980 {
1981         local expected_to_fail=$1
1982         local sess_name=$2
1983         local period=$3
1984
1985         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-rotation -s $sess_name --timer $period 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
1986         ret=$?
1987         if [[ $expected_to_fail -eq "1" ]]; then
1988                 test "$ret" -ne "0"
1989                 ok $? "Expected fail when setting periodic rotation ($period) of session $sess_name"
1990         else
1991                 ok $ret "Set periodic rotation ($period) of session $sess_name"
1992         fi
1993 }
1994
1995 function lttng_enable_rotation_timer_ok ()
1996 {
1997         lttng_enable_rotation_timer 0 $@
1998 }
1999
2000 function lttng_enable_rotation_timer_fail ()
2001 {
2002         lttng_enable_rotation_timer 1 $@
2003 }
2004
2005 function lttng_enable_rotation_size ()
2006 {
2007         local expected_to_fail=$1
2008         local sess_name=$2
2009         local size=$3
2010
2011         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-rotation -s $sess_name --size $size 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
2012         ret=$?
2013         if [[ $expected_to_fail -eq "1" ]]; then
2014                 test "$ret" -ne "0"
2015                 ok $? "Expected fail on rotate session $sess_name"
2016         else
2017                 ok $ret "Rotate session $sess_name"
2018         fi
2019 }
2020
2021 function lttng_enable_rotation_size_ok ()
2022 {
2023         lttng_enable_rotation_size 0 $@
2024 }
2025
2026 function lttng_enable_rotation_size_fail ()
2027 {
2028         lttng_enable_rotation_size 1 $@
2029 }
2030
2031 function lttng_clear_session ()
2032 {
2033         local expected_to_fail=$1
2034         local sess_name=$2
2035
2036         $TESTDIR/../src/bin/lttng/$LTTNG_BIN clear $sess_name 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
2037         ret=$?
2038         if [[ $expected_to_fail -eq "1" ]]; then
2039                 test "$ret" -ne "0"
2040                 ok $? "Expected fail on clear session $sess_name"
2041         else
2042                 ok $ret "Clear session $sess_name"
2043         fi
2044 }
2045
2046 function lttng_clear_session_ok ()
2047 {
2048         lttng_clear_session 0 $@
2049 }
2050
2051 function lttng_clear_session_fail ()
2052 {
2053         lttng_clear_session 1 $@
2054 }
2055
2056 function lttng_clear_all ()
2057 {
2058         $TESTDIR/../src/bin/lttng/$LTTNG_BIN clear --all 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
2059         ok $? "Clear all lttng sessions"
2060 }