| 1 | /*++ |
| 2 | |
| 3 | Copyright (c) Microsoft. All rights reserved. |
| 4 | |
| 5 | Module Name: |
| 6 | |
| 7 | splice.c |
| 8 | |
| 9 | Abstract: |
| 10 | |
| 11 | This file contains tests for the splice syscall. |
| 12 | |
| 13 | --*/ |
| 14 | |
| 15 | #include "lxtcommon.h" |
| 16 | #include "unittests.h" |
| 17 | #include <unistd.h> |
| 18 | #include <sys/syscall.h> |
| 19 | #include <sys/types.h> |
| 20 | #include <sys/stat.h> |
| 21 | #include <sys/wait.h> |
| 22 | #include <fcntl.h> |
| 23 | |
| 24 | #define LXT_NAME "Splice" |
| 25 | |
| 26 | #define SPLICE_SYSCALL(_Fdin, _Offin, _Fdout, _Offout, _Size, _Flags) \ |
| 27 | syscall(SYS_splice, _Fdin, _Offin, _Fdout, _Offout, _Size, _Flags) |
| 28 | |
| 29 | #define TEE_SYSCALL(_Fdin, _Fdout, _Size, _Flags) syscall(SYS_tee, _Fdin, _Fdout, _Size, _Flags) |
| 30 | |
| 31 | #ifndef SPLICE_F_NONBLOCK |
| 32 | #define SPLICE_F_NONBLOCK 0x02 |
| 33 | #endif |
| 34 | |
| 35 | #define SPLICE_READ_PIPE_INDEX 0 |
| 36 | #define SPLICE_WRITE_PIPE_INDEX 1 |
| 37 | |
| 38 | // |
| 39 | // The following defines a standardized file path and content for a file that |
| 40 | // can be used for splicing. |
| 41 | // |
| 42 | |
| 43 | #define SPLICE_STD_FILE "/data/test/splice_test_std_file_1.txt" |
| 44 | #define SPLICE_STD_FILE_CONTENT "123456789Test" |
| 45 | #define SPLICE_STD_FILE_SIZE (unsigned long)(strlen(SPLICE_STD_FILE_CONTENT)) |
| 46 | |
| 47 | int SpliceOpenStandardFile(void); |
| 48 | |
| 49 | int SpliceVariationBasicTests(PLXT_ARGS Args); |
| 50 | |
| 51 | int SpliceVariationBlocking(PLXT_ARGS Args); |
| 52 | |
| 53 | int SpliceVariationInvalidParameters(PLXT_ARGS Args); |
| 54 | |
| 55 | int TeeVariationBasicTests(PLXT_ARGS Args); |
| 56 | |
| 57 | int TeeVariationInvalidParameters(PLXT_ARGS Args); |
| 58 | |
| 59 | // |
| 60 | // Globals. |
| 61 | // |
| 62 | |
| 63 | static const LXT_VARIATION g_LxtVariations[] = { |
| 64 | {"Splice - Invalid Parameter Test ", SpliceVariationInvalidParameters}, |
| 65 | {"Splice - Blocking Tests", SpliceVariationBlocking}, |
| 66 | {"Splice - Basic Usage Tests", SpliceVariationBasicTests}, |
| 67 | {"Tee - Invalid Parameter Test ", TeeVariationInvalidParameters}, |
| 68 | {"Tee - Basic Usage Test", TeeVariationBasicTests}}; |
| 69 | |
| 70 | int SpliceTestEntry(int Argc, char* Argv[]) |
| 71 | |
| 72 | /*++ |
| 73 | |
| 74 | Routine Description: |
| 75 | |
| 76 | This routine is the main entry point for the procfs tests. |
| 77 | |
| 78 | Arguments: |
| 79 | |
| 80 | Argc - Supplies the number of command line arguments. |
| 81 | |
| 82 | Argv - Supplies the command line arguments. |
| 83 | |
| 84 | Return Value: |
| 85 | |
| 86 | Returns 0 on success, -1 on failure. |
| 87 | |
| 88 | --*/ |
| 89 | |
| 90 | { |
| 91 | |
| 92 | LXT_ARGS Args; |
| 93 | int Result; |
| 94 | |
| 95 | LxtCheckResult(LxtInitialize(Argc, Argv, &Args, LXT_NAME)); |
| 96 | LxtCheckResult(LxtRunVariations(&Args, g_LxtVariations, LXT_COUNT_OF(g_LxtVariations))); |
| 97 | |
| 98 | ErrorExit: |
| 99 | LxtUninitialize(); |
| 100 | return !LXT_SUCCESS(Result); |
| 101 | } |
| 102 | |
| 103 | int SpliceOpenStandardFile(void) |
| 104 | |
| 105 | /*++ |
| 106 | |
| 107 | Routine Description: |
| 108 | |
| 109 | This routine returns the file descriptor for the standard file which |
| 110 | include uniform data for splicing. |
| 111 | |
| 112 | Arguments: |
| 113 | |
| 114 | None. |
| 115 | |
| 116 | Return Value: |
| 117 | |
| 118 | On success, returns open file descriptor; otherwise, -1. |
| 119 | |
| 120 | --*/ |
| 121 | |
| 122 | { |
| 123 | |
| 124 | int Fd; |
| 125 | off_t Offset; |
| 126 | int Result; |
| 127 | |
| 128 | LxtCheckErrno(Fd = open(SPLICE_STD_FILE, (O_CREAT | O_RDWR), (S_IRUSR | S_IWUSR))); |
| 129 | |
| 130 | LxtCheckErrno(write(Fd, SPLICE_STD_FILE_CONTENT, SPLICE_STD_FILE_SIZE)); |
| 131 | |
| 132 | // |
| 133 | // Set the offset back to zero. |
| 134 | // |
| 135 | |
| 136 | LxtCheckErrno(Offset = lseek(Fd, 0, SEEK_SET)); |
| 137 | |
| 138 | // |
| 139 | // Set the result. |
| 140 | // |
| 141 | |
| 142 | Result = Fd; |
| 143 | Fd = 0; |
| 144 | |
| 145 | ErrorExit: |
| 146 | if (Fd > 0) |
| 147 | { |
| 148 | close(Fd); |
| 149 | unlink(SPLICE_STD_FILE); |
| 150 | } |
| 151 | |
| 152 | return Result; |
| 153 | } |
| 154 | |
| 155 | int SpliceVariationBasicTests(PLXT_ARGS Args) |
| 156 | |
| 157 | /*++ |
| 158 | |
| 159 | Routine Description: |
| 160 | |
| 161 | This routine runs basic usage tests for splice, including splicing between |
| 162 | two pipes and a pipe and a regular file, and tests the results for |
| 163 | accurate splice sizes, content, and file offsets. |
| 164 | |
| 165 | Arguments: |
| 166 | |
| 167 | Args - Supplies a pointer to variation arguments. |
| 168 | |
| 169 | Return Value: |
| 170 | |
| 171 | On success, returns open file descriptor; otherwise, -1. |
| 172 | |
| 173 | |
| 174 | --*/ |
| 175 | |
| 176 | { |
| 177 | |
| 178 | char Buffer[4]; |
| 179 | LXT_PIPE DestinationPipe = {-1, -1}; |
| 180 | loff_t InitialOffset; |
| 181 | loff_t Offset; |
| 182 | char* PipeData; |
| 183 | ssize_t PipeDataSize; |
| 184 | int RegularFd; |
| 185 | int Result; |
| 186 | ssize_t SpliceSize; |
| 187 | LXT_PIPE SourcePipe = {-1, -1}; |
| 188 | |
| 189 | RegularFd = -1; |
| 190 | PipeData = "1234"; |
| 191 | PipeDataSize = strlen(PipeData); |
| 192 | LxtCheckResult(LxtCreatePipe(&DestinationPipe)); |
| 193 | LxtCheckResult(LxtCreatePipe(&SourcePipe)); |
| 194 | LxtCheckResult(RegularFd = SpliceOpenStandardFile()); |
| 195 | |
| 196 | // |
| 197 | // Set up read-end of pipes as non-blocking for empty tests. |
| 198 | // |
| 199 | |
| 200 | LxtCheckErrno(fcntl(SourcePipe.Read, F_SETFL, O_NONBLOCK)); |
| 201 | LxtCheckErrno(fcntl(DestinationPipe.Read, F_SETFL, O_NONBLOCK)); |
| 202 | |
| 203 | // |
| 204 | // Perform basic tests between pipes. |
| 205 | // |
| 206 | |
| 207 | LxtLogInfo("Basic Usage - Splicing between two pipes"); |
| 208 | LxtCheckErrno(write(SourcePipe.Write, PipeData, PipeDataSize)); |
| 209 | LxtCheckErrno(SpliceSize = SPLICE_SYSCALL(SourcePipe.Read, NULL, DestinationPipe.Write, NULL, PipeDataSize, SPLICE_F_NONBLOCK)); |
| 210 | |
| 211 | LxtCheckEqual(SpliceSize, PipeDataSize, "%d"); |
| 212 | |
| 213 | // |
| 214 | // Check that the read pipe is now empty by attempting to read a single |
| 215 | // byte. |
| 216 | // |
| 217 | |
| 218 | LxtCheckErrnoFailure(read(SourcePipe.Read, Buffer, 1), EAGAIN); |
| 219 | LxtCheckErrno(SpliceSize = read(DestinationPipe.Read, Buffer, PipeDataSize)); |
| 220 | |
| 221 | LxtCheckEqual(SpliceSize, PipeDataSize, "%d"); |
| 222 | |
| 223 | // |
| 224 | // LX_TODO: Enable the following additional basic tests once splicing is |
| 225 | // available for VolFs file types. |
| 226 | // |
| 227 | |
| 228 | /* |
| 229 | // |
| 230 | // Perform test from a regular file to a pipe. |
| 231 | // |
| 232 | |
| 233 | InitialOffset = 4; |
| 234 | Offset = InitialOffset; |
| 235 | LxtLogInfo("Basic Usage - Splicing from a regular file to a pipe"); |
| 236 | LxtCheckErrno(SpliceSize = SPLICE_SYSCALL(RegularFd, |
| 237 | &Offset, |
| 238 | DestinationPipe.Write, |
| 239 | NULL, |
| 240 | 4, |
| 241 | SPLICE_F_NONBLOCK)); |
| 242 | |
| 243 | LxtCheckEqual(SpliceSize, 4, "%d"); |
| 244 | LxtCheckErrno(SpliceSize = read(DestinationPipe.Read, Buffer, 4)); |
| 245 | LxtCheckEqual(SpliceSize, 4, "%d"); |
| 246 | LxtCheckEqual(Offset - InitialOffset, 4, "%d"); |
| 247 | LxtCheckEqual(Buffer[0], |
| 248 | SPLICE_STD_FILE_CONTENT[InitialOffset], |
| 249 | "%c"); |
| 250 | |
| 251 | // |
| 252 | // Ensure that offset remains unchanged on the file. |
| 253 | // |
| 254 | |
| 255 | LxtCheckErrno(SpliceSize = read(RegularFd, Buffer, 4)); |
| 256 | LxtCheckEqual(SpliceSize, 4, "%d"); |
| 257 | LxtCheckEqual(Buffer[0], |
| 258 | SPLICE_STD_FILE_CONTENT[0], |
| 259 | "%c"); |
| 260 | |
| 261 | // |
| 262 | // Reset the file's offset for the next test. |
| 263 | // |
| 264 | |
| 265 | LxtCheckErrno(lseek(RegularFd, 0, SEEK_SET)); |
| 266 | |
| 267 | // |
| 268 | // Perform test from a pipe to a regular file. |
| 269 | // |
| 270 | |
| 271 | InitialOffset = 1; |
| 272 | Offset = InitialOffset; |
| 273 | LxtLogInfo("Basic Usage - Splicing from a pipe to a regular file"); |
| 274 | LxtCheckErrno(write(SourcePipe.Write, PipeData, PipeDataSize)); |
| 275 | LxtCheckErrno(SpliceSize = SPLICE_SYSCALL(SourcePipe.Read, |
| 276 | NULL, |
| 277 | RegularFd, |
| 278 | &Offset, |
| 279 | PipeDataSize, |
| 280 | SPLICE_F_NONBLOCK)); |
| 281 | |
| 282 | LxtCheckEqual(SpliceSize, PipeDataSize, "%d"); |
| 283 | LxtCheckEqual(Offset - InitialOffset, PipeDataSize, "%d"); |
| 284 | |
| 285 | // |
| 286 | // Ensure that the regular file's internal offset is unchanged and that the |
| 287 | // the pipe data was properly splice into the file with the offset. |
| 288 | // |
| 289 | |
| 290 | LxtCheckErrno(SpliceSize = read(RegularFd, Buffer, 2)); |
| 291 | LxtCheckEqual(SpliceSize, 2, "%d"); |
| 292 | LxtCheckEqual(Buffer[0], |
| 293 | SPLICE_STD_FILE_CONTENT[0], |
| 294 | "%c"); |
| 295 | |
| 296 | LxtCheckEqual(Buffer[1], PipeData[0], "%c"); |
| 297 | */ |
| 298 | |
| 299 | ErrorExit: |
| 300 | LxtClosePipe(&DestinationPipe); |
| 301 | LxtClosePipe(&SourcePipe); |
| 302 | if (RegularFd > 0) |
| 303 | { |
| 304 | close(RegularFd); |
| 305 | } |
| 306 | |
| 307 | return Result; |
| 308 | } |
| 309 | |
| 310 | int SpliceVariationBlocking(PLXT_ARGS Args) |
| 311 | |
| 312 | /*++ |
| 313 | |
| 314 | Routine Description: |
| 315 | |
| 316 | This routine tests the splice syscall with the splice-specific non-blocking |
| 317 | flag with pipes that have opposite internal blocking settings and checks for |
| 318 | proper behavior. |
| 319 | |
| 320 | Arguments: |
| 321 | |
| 322 | Args - Supplies a pointer to variation arguments. |
| 323 | |
| 324 | Return Value: |
| 325 | |
| 326 | On success, returns open file descriptor; otherwise, -1. |
| 327 | |
| 328 | |
| 329 | --*/ |
| 330 | |
| 331 | { |
| 332 | |
| 333 | pid_t ChildPid; |
| 334 | LXT_PIPE DestinationPipe = {-1, -1}; |
| 335 | int Result; |
| 336 | LXT_PIPE SourcePipe = {-1, -1}; |
| 337 | int WaitPidResult; |
| 338 | int WaitPidStatus; |
| 339 | |
| 340 | LxtCheckResult(LxtCreatePipe(&DestinationPipe)); |
| 341 | LxtCheckResult(LxtCreatePipe(&SourcePipe)); |
| 342 | |
| 343 | // |
| 344 | // Verify that a pipe which is automatically set to have blocking I/O |
| 345 | // semantics, does not block when the splice call is supplied with the |
| 346 | // splice-specific non-blocking flag. |
| 347 | // |
| 348 | |
| 349 | LxtLogInfo("Blocking - Non-blocking splice with blocking pipes"); |
| 350 | LxtCheckResult(ChildPid = fork()); |
| 351 | if (ChildPid == 0) |
| 352 | { |
| 353 | |
| 354 | // |
| 355 | // By default, the created pipes are blocking. The splice non-blocking |
| 356 | // flag should override this behavior. |
| 357 | // |
| 358 | |
| 359 | Result = SPLICE_SYSCALL(SourcePipe.Read, NULL, DestinationPipe.Write, NULL, 1, SPLICE_F_NONBLOCK); |
| 360 | |
| 361 | if (Result >= 0) |
| 362 | { |
| 363 | LxtLogError("Non-blocking splice syscall succeeded"); |
| 364 | _exit(1); |
| 365 | } |
| 366 | |
| 367 | if (errno != EAGAIN) |
| 368 | { |
| 369 | LxtLogError("Non-blocking splice syscall returned with error %s", strerror(errno)); |
| 370 | |
| 371 | _exit(1); |
| 372 | } |
| 373 | |
| 374 | _exit(0); |
| 375 | } |
| 376 | |
| 377 | LxtCheckResult(WaitPidStatus = LxtWaitPidPollOptions(ChildPid, 0, 0, 2)); |
| 378 | |
| 379 | // |
| 380 | // Verify that a pipe that is set to non-blocking will block when the |
| 381 | // splice-specific non-blocking flag is not passed to splice. |
| 382 | // |
| 383 | |
| 384 | LxtLogInfo("Blocking - Blocking splice with non-blocking pipe"); |
| 385 | LxtCheckErrno(fcntl(SourcePipe.Read, F_SETFL, O_NONBLOCK)); |
| 386 | LxtCheckResult(ChildPid = fork()); |
| 387 | if (ChildPid == 0) |
| 388 | { |
| 389 | Result = SPLICE_SYSCALL(SourcePipe.Read, NULL, DestinationPipe.Write, NULL, 1, 0); |
| 390 | |
| 391 | _exit(0); |
| 392 | } |
| 393 | |
| 394 | sleep(2); |
| 395 | LxtCheckErrno(WaitPidResult = waitpid(ChildPid, &WaitPidStatus, WNOHANG)); |
| 396 | |
| 397 | // |
| 398 | // If the child is not alive, it did not block as expected. |
| 399 | // |
| 400 | |
| 401 | LxtCheckEqual(WaitPidResult, 0, "%d"); |
| 402 | kill(ChildPid, SIGKILL); |
| 403 | Result = 0; |
| 404 | ErrorExit: |
| 405 | LxtClosePipe(&DestinationPipe); |
| 406 | LxtClosePipe(&SourcePipe); |
| 407 | return Result; |
| 408 | } |
| 409 | |
| 410 | int SpliceVariationInvalidParameters(PLXT_ARGS Args) |
| 411 | |
| 412 | /*++ |
| 413 | |
| 414 | Routine Description: |
| 415 | |
| 416 | This routine tests the splice syscall errors are properly set when invalid |
| 417 | parameters are passed to it. |
| 418 | |
| 419 | Arguments: |
| 420 | |
| 421 | Args - Supplies a pointer to variation arguments. |
| 422 | |
| 423 | Return Value: |
| 424 | |
| 425 | On success, returns open file descriptor; otherwise, -1. |
| 426 | |
| 427 | --*/ |
| 428 | { |
| 429 | |
| 430 | LXT_PIPE DestinationPipe = {-1, -1}; |
| 431 | loff_t ReadOffset; |
| 432 | int Result; |
| 433 | LXT_PIPE SourcePipe = {-1, -1}; |
| 434 | int StandardFd; |
| 435 | |
| 436 | StandardFd = 0; |
| 437 | LxtCheckErrno(LxtCreatePipe(&SourcePipe)); |
| 438 | LxtCheckErrno(LxtCreatePipe(&DestinationPipe)); |
| 439 | LxtCheckResult(StandardFd = SpliceOpenStandardFile()); |
| 440 | |
| 441 | // |
| 442 | // Put some random data into the source pipe and set the offset. |
| 443 | // |
| 444 | |
| 445 | LxtCheckErrno(write(SourcePipe.Write, "1234", 4)); |
| 446 | ReadOffset = 2; |
| 447 | |
| 448 | // |
| 449 | // Check that a call with invalid parameters, but a splice size of zero will |
| 450 | // succeed. |
| 451 | // |
| 452 | |
| 453 | LxtLogInfo("Invalid Params - Passing invalid parameters with splice size of zero"); |
| 454 | |
| 455 | LxtCheckErrno(SPLICE_SYSCALL(SourcePipe.Read, &ReadOffset, DestinationPipe.Write, NULL, 0, 0)); |
| 456 | |
| 457 | LxtCheckErrno(SPLICE_SYSCALL(StandardFd, NULL, StandardFd, NULL, 0, 0)); |
| 458 | LxtCheckErrno(SPLICE_SYSCALL(-1, NULL, -1, NULL, 0, 0)); |
| 459 | |
| 460 | // |
| 461 | // Check that invalid flags do not cause any errors. |
| 462 | // |
| 463 | |
| 464 | LxtCheckErrno(SPLICE_SYSCALL(SourcePipe.Read, NULL, DestinationPipe.Write, NULL, 4, 0xF0)); |
| 465 | |
| 466 | // |
| 467 | // Check the error result when a pipe is given a non-null offset. |
| 468 | // |
| 469 | |
| 470 | LxtLogInfo("Invalid Params - Passing non-null offset with pipe fd"); |
| 471 | LxtCheckErrnoFailure(SPLICE_SYSCALL(SourcePipe.Read, &ReadOffset, DestinationPipe.Write, NULL, 1, 0), ESPIPE); |
| 472 | |
| 473 | LxtCheckErrnoFailure(SPLICE_SYSCALL(SourcePipe.Read, NULL, DestinationPipe.Write, &ReadOffset, 1, 0), ESPIPE); |
| 474 | |
| 475 | // |
| 476 | // Ensure that the correct error is returned when splice takes two |
| 477 | // parameters that are not pipes. |
| 478 | // |
| 479 | |
| 480 | LxtLogInfo("Invalid Params - Passing two non-pipe fd's to splice"); |
| 481 | LxtCheckErrnoFailure(SPLICE_SYSCALL(StandardFd, NULL, StandardFd, NULL, 1, 0), EINVAL); |
| 482 | |
| 483 | // |
| 484 | // Validate errors returned wrong read\write pipe |
| 485 | // |
| 486 | |
| 487 | // |
| 488 | // LX_TODO: Here and in the tee syscall variation, the atomic property of |
| 489 | // tee/splice must be implemented before these tests are enabled. |
| 490 | // |
| 491 | |
| 492 | /* |
| 493 | LxtLogInfo("Invalid Params - Invalid splice read\write pipe 1"); |
| 494 | LxtCheckErrnoFailure(SPLICE_SYSCALL(SourcePipe.Read, |
| 495 | NULL, |
| 496 | SourcePipe.Read, |
| 497 | NULL, |
| 498 | 200, |
| 499 | 0), |
| 500 | EBADF); |
| 501 | |
| 502 | LxtLogInfo("Invalid Params - Invalid splice read\write pipe 2"); |
| 503 | LxtCheckErrnoFailure(SPLICE_SYSCALL(SourcePipe.Write, |
| 504 | NULL, |
| 505 | SourcePipe.Read, |
| 506 | NULL, |
| 507 | 200, |
| 508 | 0), |
| 509 | EBADF); |
| 510 | |
| 511 | LxtLogInfo("Invalid Params - Invalid splice read\write pipe 3"); |
| 512 | LxtCheckErrnoFailure(SPLICE_SYSCALL(SourcePipe.Read, |
| 513 | NULL, |
| 514 | DestinationPipe.Read, |
| 515 | NULL, |
| 516 | 200, |
| 517 | 0), |
| 518 | EBADF); |
| 519 | */ |
| 520 | |
| 521 | ErrorExit: |
| 522 | LxtClosePipe(&SourcePipe); |
| 523 | LxtClosePipe(&DestinationPipe); |
| 524 | if (StandardFd > 0) |
| 525 | { |
| 526 | close(StandardFd); |
| 527 | } |
| 528 | |
| 529 | return Result; |
| 530 | } |
| 531 | |
| 532 | int TeeVariationBasicTests(PLXT_ARGS Args) |
| 533 | |
| 534 | /*++ |
| 535 | --*/ |
| 536 | |
| 537 | { |
| 538 | |
| 539 | char Buffer[16]; |
| 540 | LXT_PIPE DestinationPipe = {-1, -1}; |
| 541 | char* PipeData; |
| 542 | ssize_t PipeDataSize; |
| 543 | ssize_t ReadSize; |
| 544 | int Result; |
| 545 | ssize_t SpliceSize; |
| 546 | LXT_PIPE SourcePipe = {-1, -1}; |
| 547 | |
| 548 | PipeData = "1234"; |
| 549 | PipeDataSize = strlen(PipeData); |
| 550 | LxtCheckResult(LxtCreatePipe(&DestinationPipe)); |
| 551 | LxtCheckResult(LxtCreatePipe(&SourcePipe)); |
| 552 | |
| 553 | // |
| 554 | // Set up read-end of pipes as non-blocking for empty tests. |
| 555 | // |
| 556 | |
| 557 | LxtCheckErrno(fcntl(SourcePipe.Read, F_SETFL, O_NONBLOCK)); |
| 558 | LxtCheckErrno(fcntl(DestinationPipe.Read, F_SETFL, O_NONBLOCK)); |
| 559 | |
| 560 | // |
| 561 | // Perform basic tests between pipes. |
| 562 | // |
| 563 | |
| 564 | LxtLogInfo("Basic Usage - Tee"); |
| 565 | LxtCheckErrno(write(SourcePipe.Write, PipeData, PipeDataSize)); |
| 566 | LxtCheckErrno(SpliceSize = TEE_SYSCALL(SourcePipe.Read, DestinationPipe.Write, PipeDataSize, SPLICE_F_NONBLOCK)); |
| 567 | |
| 568 | LxtCheckEqual(SpliceSize, PipeDataSize, "%d"); |
| 569 | |
| 570 | // |
| 571 | // Check that the read pipe still has the same data as before. |
| 572 | // |
| 573 | |
| 574 | LxtCheckErrno(ReadSize = read(SourcePipe.Read, Buffer, PipeDataSize)); |
| 575 | LxtCheckEqual(ReadSize, PipeDataSize, "%d"); |
| 576 | Buffer[ReadSize] = '\0'; |
| 577 | LxtCheckStringEqual(Buffer, PipeData); |
| 578 | |
| 579 | // |
| 580 | // Check that the destination pipe has the correct data after the tee. |
| 581 | // |
| 582 | |
| 583 | LxtCheckErrno(ReadSize = read(DestinationPipe.Read, Buffer, PipeDataSize)); |
| 584 | LxtCheckEqual(ReadSize, PipeDataSize, "%d"); |
| 585 | Buffer[ReadSize] = '\0'; |
| 586 | LxtCheckStringEqual(Buffer, PipeData); |
| 587 | |
| 588 | ErrorExit: |
| 589 | LxtClosePipe(&SourcePipe); |
| 590 | LxtClosePipe(&DestinationPipe); |
| 591 | return Result; |
| 592 | } |
| 593 | |
| 594 | int TeeVariationInvalidParameters(PLXT_ARGS Args) |
| 595 | |
| 596 | /*++ |
| 597 | --*/ |
| 598 | |
| 599 | { |
| 600 | |
| 601 | LXT_PIPE DestinationPipe = {-1, -1}; |
| 602 | int Result; |
| 603 | LXT_PIPE SourcePipe = {-1, -1}; |
| 604 | int StandardFd; |
| 605 | |
| 606 | StandardFd = 0; |
| 607 | LxtCheckErrno(LxtCreatePipe(&SourcePipe)); |
| 608 | LxtCheckErrno(LxtCreatePipe(&DestinationPipe)); |
| 609 | LxtCheckResult(StandardFd = SpliceOpenStandardFile()); |
| 610 | |
| 611 | // |
| 612 | // Put some random data into the source pipe and set the offset. |
| 613 | // |
| 614 | |
| 615 | LxtCheckErrno(write(SourcePipe.Write, "1234", 4)); |
| 616 | |
| 617 | // |
| 618 | // Check that a call with invalid parameters, but a size of zero will |
| 619 | // succeed. |
| 620 | // |
| 621 | |
| 622 | LxtLogInfo("Invalid Params - Passing invalid parameters to tee with size of zero"); |
| 623 | |
| 624 | LxtCheckErrno(TEE_SYSCALL(StandardFd, DestinationPipe.Write, 0, 0)); |
| 625 | LxtCheckErrno(TEE_SYSCALL(SourcePipe.Read, StandardFd, 0, 0)); |
| 626 | LxtCheckErrno(TEE_SYSCALL(StandardFd, StandardFd, 0, 0)); |
| 627 | |
| 628 | // |
| 629 | // Check that invalid flags do not cause any errors. |
| 630 | // |
| 631 | |
| 632 | LxtCheckErrno(TEE_SYSCALL(SourcePipe.Read, DestinationPipe.Write, 4, 0xF0)); |
| 633 | // |
| 634 | // Validate the errors returned with invalid parameters and non-zero splice |
| 635 | // sizes. |
| 636 | // |
| 637 | |
| 638 | LxtLogInfo("Invalid Params - Passing a non-pipe to a tee syscall"); |
| 639 | LxtCheckErrnoFailure(TEE_SYSCALL(StandardFd, DestinationPipe.Write, 1, 0), EINVAL); |
| 640 | |
| 641 | LxtCheckErrnoFailure(TEE_SYSCALL(SourcePipe.Read, StandardFd, 1, 0), EINVAL); |
| 642 | |
| 643 | // |
| 644 | // Validate errors returned sending to the wrong read\write pipe |
| 645 | // |
| 646 | |
| 647 | ErrorExit: |
| 648 | LxtClosePipe(&SourcePipe); |
| 649 | LxtClosePipe(&DestinationPipe); |
| 650 | if (StandardFd > 0) |
| 651 | { |
| 652 | close(StandardFd); |
| 653 | } |
| 654 | |
| 655 | return Result; |
| 656 | } |