| 1 | #!/bin/bash |
| 2 | # |
| 3 | # Copyright (C) - 2017 Erica Bugden <erica.bugden@efficios.com> |
| 4 | # Copyright (C) - 2017 Francis Deslauriers <francis.deslauriers@efficios.com> |
| 5 | # |
| 6 | # This library is free software; you can redistribute it and/or modify it under |
| 7 | # the terms of the GNU Lesser General Public License as published by the Free |
| 8 | # Software Foundation; version 2.1 of the License. |
| 9 | # |
| 10 | # This library is distributed in the hope that it will be useful, but WITHOUT |
| 11 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| 12 | # FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
| 13 | # details. |
| 14 | # |
| 15 | # You should have received a copy of the GNU Lesser General Public License |
| 16 | # along with this library; if not, write to the Free Software Foundation, Inc., |
| 17 | # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | TEST_DESC="Userspace probe - Testing userspace probe on ELF symbol" |
| 20 | |
| 21 | CURDIR=$(dirname "$0")/ |
| 22 | TESTDIR=$CURDIR/../.. |
| 23 | TESTAPP_DIR="$TESTDIR/utils/testapp/" |
| 24 | ELF_TEST_BIN_DIR="$TESTAPP_DIR/userspace-probe-elf-binary/" |
| 25 | ELF_TEST_BIN_NAME="userspace-probe-elf-binary" |
| 26 | ELF_TEST_BIN="$ELF_TEST_BIN_DIR/$ELF_TEST_BIN_NAME" |
| 27 | ELF_CXX_TEST_BIN_DIR="$TESTAPP_DIR/userspace-probe-elf-cxx-binary/" |
| 28 | ELF_CXX_TEST_BIN_NAME="userspace-probe-elf-cxx-binary" |
| 29 | ELF_CXX_TEST_BIN="$ELF_CXX_TEST_BIN_DIR/$ELF_CXX_TEST_BIN_NAME" |
| 30 | SDT_TEST_BIN_DIR="$TESTAPP_DIR/userspace-probe-sdt-binary/.libs/" |
| 31 | SDT_TEST_BIN_NAME="userspace-probe-sdt-binary" |
| 32 | SDT_TEST_BIN="$SDT_TEST_BIN_DIR/$SDT_TEST_BIN_NAME" |
| 33 | ELF_SYMBOL="test_function" |
| 34 | PROBE_EVENT_NAME=userspace_probe_test_event |
| 35 | NUM_TESTS=81 |
| 36 | OUTPUT_DEST=/dev/null |
| 37 | ERROR_OUTPUT_DEST=/dev/null |
| 38 | |
| 39 | source "$TESTDIR/utils/utils.sh" |
| 40 | |
| 41 | function validate_list() |
| 42 | { |
| 43 | local session_name=$1 |
| 44 | local event_name=$2 |
| 45 | |
| 46 | out=$("$TESTDIR/../src/bin/lttng/$LTTNG_BIN" list "$session_name" | grep "$event_name") |
| 47 | if [ -z "$out" ]; then |
| 48 | fail "Validate userspace probe listing" |
| 49 | diag "$event_name not found when listing $session_name" |
| 50 | else |
| 51 | pass "Validate userspace probe listing. Found $event_name." |
| 52 | fi |
| 53 | } |
| 54 | |
| 55 | function test_userspace_probe_enable_file_noexist () |
| 56 | { |
| 57 | TRACE_PATH=$(mktemp -d) |
| 58 | SESSION_NAME="test_userspace_probe_enable_file_noexist" |
| 59 | ENABLE_EXPR="elf:/etc/file-not-exist:$ELF_SYMBOL" |
| 60 | |
| 61 | diag "Userspace probe enable on non-existant file" |
| 62 | |
| 63 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 64 | |
| 65 | lttng_enable_kernel_userspace_probe_event_fail $SESSION_NAME $ENABLE_EXPR $PROBE_EVENT_NAME |
| 66 | |
| 67 | destroy_lttng_session_ok $SESSION_NAME |
| 68 | |
| 69 | rm -rf "$TRACE_PATH" |
| 70 | } |
| 71 | |
| 72 | function test_userspace_probe_enable_file_not_elf () |
| 73 | { |
| 74 | TRACE_PATH=$(mktemp -d) |
| 75 | SESSION_NAME="test_userspace_probe_enable_file_not_elf" |
| 76 | ENABLE_EXPR="elf:/etc/passwd:$ELF_SYMBOL" |
| 77 | |
| 78 | diag "Userspace probe enable on a non ELF file" |
| 79 | |
| 80 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 81 | |
| 82 | lttng_enable_kernel_userspace_probe_event_fail $SESSION_NAME $ENABLE_EXPR $PROBE_EVENT_NAME |
| 83 | |
| 84 | destroy_lttng_session_ok $SESSION_NAME |
| 85 | |
| 86 | rm -rf "$TRACE_PATH" |
| 87 | } |
| 88 | |
| 89 | function test_userspace_probe_enable_elf_missing_symbol_name () |
| 90 | { |
| 91 | TRACE_PATH=$(mktemp -d) |
| 92 | SESSION_NAME="test_userspace_probe_enable_elf_missing_symbol" |
| 93 | ENABLE_EXPR="elf:$ELF_TEST_BIN:" |
| 94 | |
| 95 | diag "Userspace probe enable with unspecified ELF symbol" |
| 96 | |
| 97 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 98 | |
| 99 | lttng_enable_kernel_userspace_probe_event_fail $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 100 | |
| 101 | destroy_lttng_session_ok $SESSION_NAME |
| 102 | |
| 103 | rm -rf "$TRACE_PATH" |
| 104 | } |
| 105 | |
| 106 | function test_userspace_probe_enable_elf_nonexistant_symbol () |
| 107 | { |
| 108 | TRACE_PATH=$(mktemp -d) |
| 109 | SESSION_NAME="test_userspace_probe_enable_elf_nonexistant_symbol" |
| 110 | ELF_SYMBOL_NO_EXIST="function_doesnt_exist" |
| 111 | ENABLE_EXPR="elf:$ELF_TEST_BIN:$ELF_SYMBOL_NO_EXIST" |
| 112 | |
| 113 | diag "Userspace probe enable with nonexistant ELF symbol" |
| 114 | |
| 115 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 116 | |
| 117 | lttng_enable_kernel_userspace_probe_event_fail $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 118 | |
| 119 | destroy_lttng_session_ok $SESSION_NAME |
| 120 | |
| 121 | rm -rf "$TRACE_PATH" |
| 122 | } |
| 123 | |
| 124 | function test_userspace_probe_enable_elf_symbol_not_function () |
| 125 | { |
| 126 | TRACE_PATH=$(mktemp -d) |
| 127 | SESSION_NAME="test_userspace_probe_enable_elf_symbol_not_function" |
| 128 | ELF_SYMBOL_NO_FUNC="not_a_function" |
| 129 | ENABLE_EXPR="elf:$ELF_TEST_BIN:$ELF_SYMBOL_NO_FUNC" |
| 130 | |
| 131 | diag "Userspace probe enable with non-function ELF symbol" |
| 132 | |
| 133 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 134 | |
| 135 | lttng_enable_kernel_userspace_probe_event_fail $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 136 | |
| 137 | destroy_lttng_session_ok $SESSION_NAME |
| 138 | |
| 139 | rm -rf "$TRACE_PATH" |
| 140 | } |
| 141 | |
| 142 | function test_userspace_probe_enable_implicit_probe_type () |
| 143 | { |
| 144 | TRACE_PATH=$(mktemp -d) |
| 145 | SESSION_NAME="test_userspace_probe_enable_implicit_probe_type" |
| 146 | ENABLE_EXPR="$ELF_TEST_BIN:$ELF_SYMBOL" |
| 147 | |
| 148 | diag "Userspace probe enabled successfully with implicit probe type" |
| 149 | |
| 150 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 151 | |
| 152 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 153 | |
| 154 | validate_list $SESSION_NAME $ELF_SYMBOL |
| 155 | validate_list $SESSION_NAME $ELF_TEST_BIN_NAME |
| 156 | validate_list $SESSION_NAME "ELF" |
| 157 | validate_list $SESSION_NAME "Function" |
| 158 | |
| 159 | destroy_lttng_session_ok $SESSION_NAME |
| 160 | |
| 161 | rm -rf "$TRACE_PATH" |
| 162 | } |
| 163 | |
| 164 | function test_userspace_probe_enable_elf_symbol_exists () |
| 165 | { |
| 166 | TRACE_PATH=$(mktemp -d) |
| 167 | SESSION_NAME="test_userspace_probe_enable_elf_symbol_exists" |
| 168 | ENABLE_EXPR="elf:$ELF_TEST_BIN:$ELF_SYMBOL" |
| 169 | |
| 170 | diag "Userspace probe enabled successfully" |
| 171 | |
| 172 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 173 | |
| 174 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 175 | |
| 176 | validate_list $SESSION_NAME $ELF_SYMBOL |
| 177 | validate_list $SESSION_NAME $ELF_TEST_BIN_NAME |
| 178 | validate_list $SESSION_NAME "ELF" |
| 179 | validate_list $SESSION_NAME "Function" |
| 180 | |
| 181 | destroy_lttng_session_ok $SESSION_NAME |
| 182 | |
| 183 | rm -rf "$TRACE_PATH" |
| 184 | } |
| 185 | |
| 186 | function test_userspace_probe_enable_in_path () |
| 187 | { |
| 188 | TRACE_PATH=$(mktemp -d) |
| 189 | SESSION_NAME="test_userspace_probe_enable_in_path" |
| 190 | ENABLE_EXPR="elf:$ELF_TEST_BIN_NAME:$ELF_SYMBOL" |
| 191 | |
| 192 | diag "Userspace probe on binary in PATH enabled successfully" |
| 193 | |
| 194 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 195 | |
| 196 | # Save old PATH and add the test directory to the PATH. |
| 197 | OLDPATH="$PATH" |
| 198 | export PATH="$PATH:$(realpath $ELF_TEST_BIN_DIR)" |
| 199 | |
| 200 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 201 | |
| 202 | validate_list $SESSION_NAME $ELF_SYMBOL |
| 203 | validate_list $SESSION_NAME $ELF_TEST_BIN_NAME |
| 204 | validate_list $SESSION_NAME "ELF" |
| 205 | validate_list $SESSION_NAME "Function" |
| 206 | |
| 207 | # Reset the previously saved PATH. |
| 208 | export PATH="$OLDPATH" |
| 209 | |
| 210 | destroy_lttng_session_ok $SESSION_NAME |
| 211 | |
| 212 | rm -rf "$TRACE_PATH" |
| 213 | } |
| 214 | |
| 215 | function test_userspace_probe_enable_full_path () |
| 216 | { |
| 217 | TRACE_PATH=$(mktemp -d) |
| 218 | SESSION_NAME="test_userspace_probe_enable_full_path" |
| 219 | ENABLE_EXPR="elf:$(realpath $ELF_TEST_BIN):$ELF_SYMBOL" |
| 220 | diag "Userspace probe with full path enabled successfully" |
| 221 | |
| 222 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 223 | |
| 224 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 225 | |
| 226 | validate_list $SESSION_NAME $ELF_SYMBOL |
| 227 | validate_list $SESSION_NAME $ELF_TEST_BIN_NAME |
| 228 | validate_list $SESSION_NAME "ELF" |
| 229 | validate_list $SESSION_NAME "Function" |
| 230 | |
| 231 | destroy_lttng_session_ok $SESSION_NAME |
| 232 | |
| 233 | rm -rf "$TRACE_PATH" |
| 234 | } |
| 235 | |
| 236 | function test_userspace_probe_enable_colon_in_path () |
| 237 | { |
| 238 | TRACE_PATH=$(mktemp -d) |
| 239 | SESSION_NAME="test_userspace_probe_enable_colon_in_path" |
| 240 | COLON_FILE_PATH=$(mktemp -d) |
| 241 | ELF_BIN_SYMLINK="$COLON_FILE_PATH/colon_:_in_name" |
| 242 | ELF_BIN_WITH_COLON_IN_NAME_ESCAPED="$COLON_FILE_PATH/colon_\:_in_name" |
| 243 | ENABLE_EXPR="elf:"$ELF_BIN_WITH_COLON_IN_NAME_ESCAPED":$ELF_SYMBOL" |
| 244 | |
| 245 | ln -s $(realpath $ELF_TEST_BIN) $ELF_BIN_SYMLINK |
| 246 | |
| 247 | diag "Userspace probe with binary with colon in name enabled successfully" |
| 248 | |
| 249 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 250 | |
| 251 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 252 | |
| 253 | validate_list $SESSION_NAME $ELF_SYMBOL |
| 254 | validate_list $SESSION_NAME $ELF_TEST_BIN_NAME |
| 255 | validate_list $SESSION_NAME "ELF" |
| 256 | validate_list $SESSION_NAME "Function" |
| 257 | |
| 258 | destroy_lttng_session_ok $SESSION_NAME |
| 259 | |
| 260 | rm -rf "$TRACE_PATH" |
| 261 | rm -rf "$COLON_FILE_PATH" |
| 262 | } |
| 263 | |
| 264 | function test_userspace_probe_elf () |
| 265 | { |
| 266 | TRACE_PATH=$(mktemp -d) |
| 267 | SESSION_NAME="test_userprobe_elf" |
| 268 | ENABLE_EXPR="elf:$ELF_TEST_BIN:$ELF_SYMBOL" |
| 269 | |
| 270 | diag "Userspace probe on Elf symbol enabled and traced" |
| 271 | |
| 272 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 273 | |
| 274 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 275 | |
| 276 | start_lttng_tracing_ok $SESSION_NAME |
| 277 | eval "$ELF_TEST_BIN" > /dev/null |
| 278 | stop_lttng_tracing_ok $SESSION_NAME |
| 279 | |
| 280 | validate_trace $PROBE_EVENT_NAME "$TRACE_PATH" |
| 281 | |
| 282 | destroy_lttng_session_ok $SESSION_NAME |
| 283 | |
| 284 | rm -rf "$TRACE_PATH" |
| 285 | } |
| 286 | |
| 287 | function test_userspace_probe_elf_cxx_function () |
| 288 | { |
| 289 | TRACE_PATH=$(mktemp -d) |
| 290 | SESSION_NAME="test_userprobe_elf_cxx_function" |
| 291 | # Probing C++ mangled symbols should work the same way as regular Elf |
| 292 | # symbols |
| 293 | ELF_SYMBOL_CXX="_Z17test_cxx_functionv" |
| 294 | ENABLE_EXPR="elf:$ELF_CXX_TEST_BIN:$ELF_SYMBOL_CXX" |
| 295 | |
| 296 | diag "Userspace probe on C++ mangled function enabled and traced" |
| 297 | |
| 298 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 299 | |
| 300 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 301 | |
| 302 | start_lttng_tracing_ok $SESSION_NAME |
| 303 | eval "$ELF_CXX_TEST_BIN" > /dev/null |
| 304 | stop_lttng_tracing_ok $SESSION_NAME |
| 305 | |
| 306 | validate_trace $PROBE_EVENT_NAME "$TRACE_PATH" |
| 307 | |
| 308 | destroy_lttng_session_ok $SESSION_NAME |
| 309 | |
| 310 | rm -rf "$TRACE_PATH" |
| 311 | } |
| 312 | |
| 313 | function test_userspace_probe_elf_cxx_method () |
| 314 | { |
| 315 | TRACE_PATH=$(mktemp -d) |
| 316 | SESSION_NAME="test_userprobe_elf_cxx_method" |
| 317 | # Probing C++ mangled symbols should work the same way as regular Elf |
| 318 | # symbols |
| 319 | ELF_SYMBOL_CXX="_ZN10test_class11test_methodEv" |
| 320 | ENABLE_EXPR="elf:$ELF_CXX_TEST_BIN:$ELF_SYMBOL_CXX" |
| 321 | |
| 322 | diag "Userspace probe on C++ mangled method enabled and traced" |
| 323 | |
| 324 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 325 | |
| 326 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 327 | |
| 328 | start_lttng_tracing_ok $SESSION_NAME |
| 329 | eval "$ELF_CXX_TEST_BIN" > /dev/null |
| 330 | stop_lttng_tracing_ok $SESSION_NAME |
| 331 | |
| 332 | validate_trace $PROBE_EVENT_NAME "$TRACE_PATH" |
| 333 | |
| 334 | destroy_lttng_session_ok $SESSION_NAME |
| 335 | |
| 336 | rm -rf "$TRACE_PATH" |
| 337 | } |
| 338 | |
| 339 | function test_userspace_probe_elf_disable () |
| 340 | { |
| 341 | TRACE_PATH=$(mktemp -d) |
| 342 | SESSION_NAME="test_userprobe_elf_disable" |
| 343 | ENABLE_EXPR="elf:$ELF_TEST_BIN:$ELF_SYMBOL" |
| 344 | |
| 345 | diag "Userspace probe on Elf symbol disabled and traced" |
| 346 | |
| 347 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 348 | |
| 349 | # Activate and disable event |
| 350 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 351 | disable_kernel_lttng_userspace_probe_event_ok $SESSION_NAME $PROBE_EVENT_NAME |
| 352 | |
| 353 | start_lttng_tracing_ok $SESSION_NAME |
| 354 | eval "$ELF_TEST_BIN" > /dev/null |
| 355 | stop_lttng_tracing_ok $SESSION_NAME |
| 356 | |
| 357 | # Verify that the trace contains zero event. |
| 358 | validate_trace_empty "$TRACE_PATH" |
| 359 | |
| 360 | destroy_lttng_session_ok $SESSION_NAME |
| 361 | |
| 362 | rm -rf "$TRACE_PATH" |
| 363 | } |
| 364 | |
| 365 | function test_userspace_probe_elf_list () |
| 366 | { |
| 367 | TRACE_PATH=$(mktemp -d) |
| 368 | SESSION_NAME="test_userprobe_elf_list" |
| 369 | ENABLE_EXPR="elf:$ELF_TEST_BIN:$ELF_SYMBOL" |
| 370 | |
| 371 | diag "Userspace probe ELF enabled and listed" |
| 372 | |
| 373 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 374 | |
| 375 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 376 | |
| 377 | validate_list $SESSION_NAME $PROBE_EVENT_NAME |
| 378 | validate_list $SESSION_NAME $ELF_SYMBOL |
| 379 | validate_list $SESSION_NAME $ELF_TEST_BIN_NAME |
| 380 | validate_list $SESSION_NAME "ELF" |
| 381 | validate_list $SESSION_NAME "Function" |
| 382 | |
| 383 | destroy_lttng_session_ok $SESSION_NAME |
| 384 | |
| 385 | rm -rf "$TRACE_PATH" |
| 386 | } |
| 387 | |
| 388 | function test_userspace_probe_save_load_elf() |
| 389 | { |
| 390 | # Test that the load and save works for userspace probes AND that when |
| 391 | # a userspace probe is placed on a symlink by the user the save command |
| 392 | # saves the path to the link and not to the actual file. This is to |
| 393 | # support instrumentation of shared objects that are often accessed |
| 394 | # through symlinks and updated. |
| 395 | TRACE_PATH=$(mktemp -d) |
| 396 | TMP_LINK_DIR=$(mktemp -d) |
| 397 | TMP_SAVE_DIR=$(mktemp -d) |
| 398 | |
| 399 | SESSION_NAME="test_userprobe_save_load_elf" |
| 400 | |
| 401 | ELF_BIN_SYMLINK="$TMP_LINK_DIR"/bin_elf_symlink |
| 402 | |
| 403 | ENABLE_EXPR_ELF="elf:$ELF_BIN_SYMLINK:$ELF_SYMBOL" |
| 404 | PROBE_EVENT_NAME_ELF="$PROBE_EVENT_NAME"_elf |
| 405 | |
| 406 | # Create symlinks to the target binaries. |
| 407 | ln -s $(realpath $ELF_TEST_BIN) $ELF_BIN_SYMLINK |
| 408 | |
| 409 | diag "Userspace probes Elf are saved and loaded" |
| 410 | |
| 411 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 412 | |
| 413 | # Enable userspace prove events. |
| 414 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR_ELF" "$PROBE_EVENT_NAME_ELF" |
| 415 | |
| 416 | # Confirm that the events were enabled. |
| 417 | validate_list $SESSION_NAME $ELF_TEST_BIN_NAME |
| 418 | |
| 419 | # Save the session to a file. |
| 420 | lttng_save $SESSION_NAME "--output-path=$TMP_SAVE_DIR" |
| 421 | |
| 422 | destroy_lttng_session_ok $SESSION_NAME |
| 423 | |
| 424 | # Confirm that the userspace probe are save to the xml file. |
| 425 | local count=$(cat $TMP_SAVE_DIR/* | grep --count -E "$ELF_BIN_SYMLINK") |
| 426 | if [[ $count -eq "1" ]]; then |
| 427 | pass "Symlink found in saved session" |
| 428 | else |
| 429 | fail "Symlink to binary not found in saved session" |
| 430 | fi |
| 431 | |
| 432 | # Load the saved session. |
| 433 | lttng_load_ok "--input-path=$TMP_SAVE_DIR" |
| 434 | |
| 435 | # Confirm that the userspace probes event are enabled in the newly |
| 436 | # loaded session. |
| 437 | validate_list $SESSION_NAME $ELF_TEST_BIN_NAME |
| 438 | |
| 439 | # Cleanup temp files and folders. |
| 440 | rm -rf "$TRACE_PATH" |
| 441 | rm -rf "$TMP_LINK_DIR" |
| 442 | rm -rf "$TMP_SAVE_DIR" |
| 443 | } |
| 444 | function test_userspace_probe_save_load_sdt() |
| 445 | { |
| 446 | # Test that the load and save works for userspace probes AND that when |
| 447 | # a userspace probe is placed on a symlink by the user the save command |
| 448 | # saves the path to the link and not to the actual file. This is to |
| 449 | # support instrumentation of shared objects that are often accessed |
| 450 | # through symlinks and updated. |
| 451 | TRACE_PATH=$(mktemp -d) |
| 452 | TMP_LINK_DIR=$(mktemp -d) |
| 453 | TMP_SAVE_DIR=$(mktemp -d) |
| 454 | |
| 455 | SESSION_NAME="test_userprobe_save_load_sdt" |
| 456 | PROVIDER="foobar" |
| 457 | PROBE="tp1" |
| 458 | |
| 459 | SDT_BIN_SYMLINK="$TMP_LINK_DIR"/bin_sdt_symlink |
| 460 | |
| 461 | ENABLE_EXPR_SDT="sdt:$SDT_BIN_SYMLINK:$PROVIDER:$PROBE" |
| 462 | PROBE_EVENT_NAME_SDT="$PROBE_EVENT_NAME"_sdt |
| 463 | |
| 464 | # Create symlinks to the target binaries. |
| 465 | ln -s $(realpath $SDT_TEST_BIN) $SDT_BIN_SYMLINK |
| 466 | |
| 467 | diag "Userspace probes SDT are saved and loaded" |
| 468 | |
| 469 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 470 | |
| 471 | # Enable userspace prove events. |
| 472 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR_SDT" "$PROBE_EVENT_NAME_SDT" |
| 473 | |
| 474 | # Confirm that the events were enabled. |
| 475 | validate_list $SESSION_NAME $SDT_TEST_BIN_NAME |
| 476 | |
| 477 | # Save the session to a file. |
| 478 | lttng_save $SESSION_NAME "--output-path=$TMP_SAVE_DIR" |
| 479 | |
| 480 | destroy_lttng_session_ok $SESSION_NAME |
| 481 | |
| 482 | # Confirm that the userspace probe are save to the xml file. |
| 483 | local count=$(cat $TMP_SAVE_DIR/* | grep --count -E "$SDT_BIN_SYMLINK") |
| 484 | if [[ $count -eq "1" ]]; then |
| 485 | pass "Symlink found in saved session" |
| 486 | else |
| 487 | fail "Symlink to binary not found in saved session" |
| 488 | fi |
| 489 | |
| 490 | # Load the saved session. |
| 491 | lttng_load_ok "--input-path=$TMP_SAVE_DIR" |
| 492 | |
| 493 | # Confirm that the userspace probes event are enabled in the newly |
| 494 | # loaded session. |
| 495 | validate_list $SESSION_NAME $SDT_TEST_BIN_NAME |
| 496 | |
| 497 | # Cleanup temp files and folders. |
| 498 | rm -rf "$TRACE_PATH" |
| 499 | rm -rf "$TMP_LINK_DIR" |
| 500 | rm -rf "$TMP_SAVE_DIR" |
| 501 | } |
| 502 | |
| 503 | function test_userspace_probe_sdt () |
| 504 | { |
| 505 | TRACE_PATH=$(mktemp -d) |
| 506 | PROVIDER="foobar" |
| 507 | PROBE="tp1" |
| 508 | ENABLE_EXPR="sdt:$SDT_TEST_BIN:$PROVIDER:$PROBE" |
| 509 | |
| 510 | diag "Userspace probe on SDT tracepoint enabled and traced" |
| 511 | |
| 512 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 513 | |
| 514 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 515 | |
| 516 | start_lttng_tracing_ok $SESSION_NAME |
| 517 | eval "$SDT_TEST_BIN" > /dev/null |
| 518 | stop_lttng_tracing_ok $SESSION_NAME |
| 519 | |
| 520 | validate_trace $PROBE_EVENT_NAME "$TRACE_PATH" |
| 521 | |
| 522 | destroy_lttng_session_ok $SESSION_NAME |
| 523 | |
| 524 | rm -rf "$TRACE_PATH" |
| 525 | } |
| 526 | |
| 527 | function test_userspace_probe_sdt_list () |
| 528 | { |
| 529 | TRACE_PATH=$(mktemp -d) |
| 530 | SESSION_NAME="test_userprobe_sdt_list" |
| 531 | PROVIDER="foobar" |
| 532 | PROBE="tp1" |
| 533 | ENABLE_EXPR="sdt:$SDT_TEST_BIN:$PROVIDER:$PROBE" |
| 534 | |
| 535 | diag "Userspace probe SDT enabled and listed" |
| 536 | |
| 537 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 538 | |
| 539 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 540 | |
| 541 | validate_list $SESSION_NAME $PROBE_EVENT_NAME |
| 542 | validate_list $SESSION_NAME $PROVIDER |
| 543 | validate_list $SESSION_NAME $PROBE |
| 544 | validate_list $SESSION_NAME $SDT_TEST_BIN_NAME |
| 545 | validate_list $SESSION_NAME "SDT" |
| 546 | validate_list $SESSION_NAME "Tracepoint" |
| 547 | |
| 548 | destroy_lttng_session_ok $SESSION_NAME |
| 549 | |
| 550 | rm -rf "$TRACE_PATH" |
| 551 | } |
| 552 | |
| 553 | function test_userspace_probe_enable_sdt_nonexistant_provider () |
| 554 | { |
| 555 | TRACE_PATH=$(mktemp -d) |
| 556 | SESSION_NAME="test_userprobe_sdt_nonexistand_provider" |
| 557 | PROVIDER="not_provider" |
| 558 | PROBE="tp1" |
| 559 | ENABLE_EXPR="sdt:$SDT_TEST_BIN:$PROVIDER:$PROBE" |
| 560 | |
| 561 | diag "Userspace probe SDT on tracepoint non existant provider" |
| 562 | |
| 563 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 564 | |
| 565 | lttng_enable_kernel_userspace_probe_event_fail $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 566 | |
| 567 | destroy_lttng_session_ok $SESSION_NAME |
| 568 | |
| 569 | rm -rf "$TRACE_PATH" |
| 570 | } |
| 571 | |
| 572 | function test_userspace_probe_enable_sdt_nonexistant_probe () |
| 573 | { |
| 574 | TRACE_PATH=$(mktemp -d) |
| 575 | SESSION_NAME="test_userprobe_sdt_nonexistant_probe" |
| 576 | PROVIDER="foobar" |
| 577 | PROBE="not_a_tracepoint" |
| 578 | ENABLE_EXPR="sdt:$SDT_TEST_BIN:$PROVIDER:$PROBE" |
| 579 | |
| 580 | diag "Userspace probe SDT on non existant probe" |
| 581 | |
| 582 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 583 | |
| 584 | lttng_enable_kernel_userspace_probe_event_fail $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 585 | |
| 586 | destroy_lttng_session_ok $SESSION_NAME |
| 587 | |
| 588 | rm -rf "$TRACE_PATH" |
| 589 | } |
| 590 | |
| 591 | function test_userspace_probe_enable_sdt_with_sema () |
| 592 | { |
| 593 | TRACE_PATH=$(mktemp -d) |
| 594 | SESSION_NAME="test_userprobe_sdt_with_sema" |
| 595 | PROVIDER="foobar" |
| 596 | PROBE="tp_with_semaphore" |
| 597 | ENABLE_EXPR="sdt:$SDT_TEST_BIN:$PROVIDER:$PROBE" |
| 598 | |
| 599 | diag "Userspace probe SDT on non existant probe" |
| 600 | |
| 601 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 602 | |
| 603 | lttng_enable_kernel_userspace_probe_event_fail $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 604 | |
| 605 | destroy_lttng_session_ok $SESSION_NAME |
| 606 | |
| 607 | rm -rf "$TRACE_PATH" |
| 608 | } |
| 609 | |
| 610 | function test_userspace_probe_sdt_one_probe () |
| 611 | { |
| 612 | TRACE_PATH=$(mktemp -d) |
| 613 | SESSION_NAME="test_userprobe_sdt_one_probe" |
| 614 | PROVIDER="foobar" |
| 615 | PROBE="tp1" |
| 616 | ENABLE_EXPR="sdt:$SDT_TEST_BIN:$PROVIDER:$PROBE" |
| 617 | |
| 618 | diag "Userspace probe SDT on tracepoint with one callsite" |
| 619 | |
| 620 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 621 | |
| 622 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 623 | |
| 624 | start_lttng_tracing_ok $SESSION_NAME |
| 625 | eval "$SDT_TEST_BIN" > /dev/null |
| 626 | stop_lttng_tracing_ok $SESSION_NAME |
| 627 | |
| 628 | validate_trace $PROBE_EVENT_NAME "$TRACE_PATH" |
| 629 | |
| 630 | destroy_lttng_session_ok $SESSION_NAME |
| 631 | |
| 632 | rm -rf "$TRACE_PATH" |
| 633 | } |
| 634 | |
| 635 | function test_userspace_probe_sdt_two_probes () |
| 636 | { |
| 637 | TRACE_PATH=$(mktemp -d) |
| 638 | SESSION_NAME="test_userprobe_sdt_two_probes" |
| 639 | PROVIDER="foobar" |
| 640 | PROBE="tp2" |
| 641 | ENABLE_EXPR="sdt:$SDT_TEST_BIN:$PROVIDER:$PROBE" |
| 642 | |
| 643 | diag "Userspace probe SDT on tracepoint with two callsites" |
| 644 | |
| 645 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 646 | |
| 647 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 648 | |
| 649 | start_lttng_tracing_ok $SESSION_NAME |
| 650 | eval "$SDT_TEST_BIN" > /dev/null |
| 651 | stop_lttng_tracing_ok $SESSION_NAME |
| 652 | |
| 653 | validate_trace $PROBE_EVENT_NAME "$TRACE_PATH" |
| 654 | |
| 655 | destroy_lttng_session_ok $SESSION_NAME |
| 656 | |
| 657 | rm -rf "$TRACE_PATH" |
| 658 | } |
| 659 | |
| 660 | function test_userspace_probe_sdt_in_shared_object () |
| 661 | { |
| 662 | TRACE_PATH=$(mktemp -d) |
| 663 | SESSION_NAME="test_userprobe_sdt_shared_object" |
| 664 | PROVIDER="foobar" |
| 665 | PROBE="tp_in_shared_object" |
| 666 | ENABLE_EXPR="sdt:$SDT_TEST_BIN_DIR/libfoo.so:$PROVIDER:$PROBE" |
| 667 | |
| 668 | diag "Userspace probe SDT on tracepoint in shared object" |
| 669 | |
| 670 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 671 | |
| 672 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 673 | |
| 674 | start_lttng_tracing_ok $SESSION_NAME |
| 675 | eval "$SDT_TEST_BIN" > /dev/null |
| 676 | stop_lttng_tracing_ok $SESSION_NAME |
| 677 | |
| 678 | validate_trace $PROBE_EVENT_NAME "$TRACE_PATH" |
| 679 | |
| 680 | destroy_lttng_session_ok $SESSION_NAME |
| 681 | |
| 682 | rm -rf "$TRACE_PATH" |
| 683 | } |
| 684 | |
| 685 | function test_userspace_probe_sdt_in_shared_object_dlopen () |
| 686 | { |
| 687 | TRACE_PATH=$(mktemp -d) |
| 688 | SESSION_NAME="test_userprobe_sdt_shared_object_dlopen" |
| 689 | PROVIDER="foobar" |
| 690 | PROBE="tp_in_dlopen" |
| 691 | ENABLE_EXPR="sdt:$SDT_TEST_BIN_DIR/libbar.so:$PROVIDER:$PROBE" |
| 692 | |
| 693 | diag "Userspace probe SDT on tracepoint in dlopen()ed shared object" |
| 694 | |
| 695 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 696 | |
| 697 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 698 | |
| 699 | start_lttng_tracing_ok $SESSION_NAME |
| 700 | eval "$SDT_TEST_BIN" > /dev/null |
| 701 | stop_lttng_tracing_ok $SESSION_NAME |
| 702 | |
| 703 | validate_trace $PROBE_EVENT_NAME "$TRACE_PATH" |
| 704 | |
| 705 | destroy_lttng_session_ok $SESSION_NAME |
| 706 | |
| 707 | rm -rf "$TRACE_PATH" |
| 708 | } |
| 709 | |
| 710 | function test_userspace_probe_sdt_in_shared_object_ldpreload () |
| 711 | { |
| 712 | TRACE_PATH=$(mktemp -d) |
| 713 | SESSION_NAME="test_userprobe_sdt_shared_object_ldpreload" |
| 714 | PROVIDER="foobar" |
| 715 | PROBE="tp_in_ldpreload" |
| 716 | ENABLE_EXPR="sdt:$SDT_TEST_BIN_DIR/libzzz.so:$PROVIDER:$PROBE" |
| 717 | |
| 718 | diag "Userspace probe SDT on tracepoint in an LD_PRELOADed shared object" |
| 719 | |
| 720 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 721 | |
| 722 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 723 | |
| 724 | start_lttng_tracing_ok $SESSION_NAME |
| 725 | LD_PRELOAD="$SDT_TEST_BIN_DIR/libzzz.so" eval "$SDT_TEST_BIN" > /dev/null |
| 726 | stop_lttng_tracing_ok $SESSION_NAME |
| 727 | |
| 728 | validate_trace $PROBE_EVENT_NAME "$TRACE_PATH" |
| 729 | |
| 730 | destroy_lttng_session_ok $SESSION_NAME |
| 731 | |
| 732 | rm -rf "$TRACE_PATH" |
| 733 | } |
| 734 | |
| 735 | function test_userspace_probe_sdt_with_arg () |
| 736 | { |
| 737 | TRACE_PATH=$(mktemp -d) |
| 738 | SESSION_NAME="test_userprobe_sdt_arg" |
| 739 | PROVIDER="foobar" |
| 740 | PROBE="tp_with_arg" |
| 741 | ENABLE_EXPR="sdt:$SDT_TEST_BIN:$PROVIDER:$PROBE" |
| 742 | |
| 743 | diag "Userspace probe SDT on tracepoint with argument" |
| 744 | |
| 745 | create_lttng_session_ok $SESSION_NAME "$TRACE_PATH" |
| 746 | |
| 747 | lttng_enable_kernel_userspace_probe_event_ok $SESSION_NAME "$ENABLE_EXPR" $PROBE_EVENT_NAME |
| 748 | |
| 749 | start_lttng_tracing_ok $SESSION_NAME |
| 750 | eval "$SDT_TEST_BIN" > /dev/null |
| 751 | stop_lttng_tracing_ok $SESSION_NAME |
| 752 | |
| 753 | validate_trace $PROBE_EVENT_NAME "$TRACE_PATH" |
| 754 | |
| 755 | destroy_lttng_session_ok $SESSION_NAME |
| 756 | |
| 757 | rm -rf "$TRACE_PATH" |
| 758 | } |
| 759 | |
| 760 | ls "$SDT_TEST_BIN" >/dev/null 2>&1 |
| 761 | if test $? == 0; then |
| 762 | NUM_TESTS=$((NUM_TESTS+68)) |
| 763 | RUN_SDT_TESTS=1 |
| 764 | else |
| 765 | RUN_SDT_TESTS=0 |
| 766 | fi |
| 767 | |
| 768 | ls "$ELF_CXX_TEST_BIN" >/dev/null 2>&1 |
| 769 | if test $? == 0; then |
| 770 | NUM_TESTS=$((NUM_TESTS+12)) |
| 771 | RUN_ELF_CXX_TESTS=1 |
| 772 | else |
| 773 | RUN_ELF_CXX_TESTS=0 |
| 774 | fi |
| 775 | plan_tests $NUM_TESTS |
| 776 | print_test_banner "$TEST_DESC" |
| 777 | |
| 778 | if [ "$(id -u)" == "0" ]; then |
| 779 | isroot=1 |
| 780 | else |
| 781 | isroot=0 |
| 782 | fi |
| 783 | |
| 784 | skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS || |
| 785 | { |
| 786 | start_lttng_sessiond |
| 787 | |
| 788 | # Unsuccessful event enabling |
| 789 | test_userspace_probe_enable_file_noexist |
| 790 | test_userspace_probe_enable_file_not_elf |
| 791 | |
| 792 | test_userspace_probe_enable_elf_missing_symbol_name |
| 793 | test_userspace_probe_enable_elf_nonexistant_symbol |
| 794 | test_userspace_probe_enable_elf_symbol_not_function |
| 795 | |
| 796 | # Successful userspace probe elf enabling |
| 797 | test_userspace_probe_enable_implicit_probe_type |
| 798 | test_userspace_probe_enable_in_path |
| 799 | test_userspace_probe_enable_full_path |
| 800 | test_userspace_probe_enable_elf_symbol_exists |
| 801 | test_userspace_probe_enable_colon_in_path |
| 802 | |
| 803 | # Successful tracing userspace probe elf |
| 804 | test_userspace_probe_elf |
| 805 | |
| 806 | # Disable userspace-probe elf |
| 807 | test_userspace_probe_elf_disable |
| 808 | |
| 809 | # Successful listing of userspace probe elf |
| 810 | test_userspace_probe_elf_list |
| 811 | |
| 812 | # Successful save and load of userspace probe elf |
| 813 | test_userspace_probe_save_load_elf |
| 814 | |
| 815 | if test $RUN_ELF_CXX_TESTS == 1; then |
| 816 | # Successful tracing of userspace probe elf on C++ symbol |
| 817 | test_userspace_probe_elf_cxx_function |
| 818 | test_userspace_probe_elf_cxx_method |
| 819 | fi |
| 820 | |
| 821 | if test $RUN_SDT_TESTS == 1; then |
| 822 | # Unsuccessful event enabling |
| 823 | test_userspace_probe_enable_sdt_nonexistant_provider |
| 824 | test_userspace_probe_enable_sdt_nonexistant_probe |
| 825 | test_userspace_probe_enable_sdt_with_sema |
| 826 | |
| 827 | # Successful userspace probe sdt enabling |
| 828 | test_userspace_probe_sdt_one_probe |
| 829 | test_userspace_probe_sdt_two_probes |
| 830 | test_userspace_probe_sdt_with_arg |
| 831 | test_userspace_probe_sdt_in_shared_object |
| 832 | test_userspace_probe_sdt_in_shared_object_dlopen |
| 833 | test_userspace_probe_sdt_in_shared_object_ldpreload |
| 834 | |
| 835 | # Successful tracing of userspace probe sdt |
| 836 | test_userspace_probe_sdt |
| 837 | |
| 838 | # Successful listing of userspace probe sdt |
| 839 | test_userspace_probe_sdt_list |
| 840 | |
| 841 | # Successful save and load of userspace probe sdt |
| 842 | test_userspace_probe_save_load_sdt |
| 843 | fi |
| 844 | |
| 845 | stop_lttng_sessiond |
| 846 | } |