1 /* 2 * Copyright (c) 1998-2001 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * The contents of this file constitute Original Code as defined in and 7 * are subject to the Apple Public Source License Version 2.0 (the 8 * "License"). You may not use this file except in compliance with the 9 * License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this file. 11 * 12 * This Original Code and all software distributed under the License are 13 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER 14 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 15 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the 17 * License for the specific language governing rights and limitations 18 * under the License. 19 * 20 * @APPLE_LICENSE_HEADER_END@ 21 * 22 * File: fsx.c 23 * Author: Avadis Tevanian, Jr. 24 * 25 * File system exerciser. 26 * 27 * Rewrite and enhancements 1998-2001 Conrad Minshall -- conrad@mac.com 28 * 29 * Various features from Joe Sokol, Pat Dirks, and Clark Warner. 30 * 31 * Small changes to work under Linux -- davej@suse.de 32 * 33 * Sundry porting patches from Guy Harris 12/2001 34 * 35 * Checks for mmap last-page zero fill. 36 * 37 * Updated license to APSL 2.0, 2004/7/27 - Jordan Hubbard 38 * 39 * $FreeBSD$ 40 * 41 */ 42 43 #include <sys/types.h> 44 #include <sys/stat.h> 45 #ifdef _UWIN 46 # include <sys/param.h> 47 # include <limits.h> 48 # include <time.h> 49 # include <strings.h> 50 #endif 51 #include <err.h> 52 #include <fcntl.h> 53 #include <sys/mman.h> 54 #ifndef MAP_FILE 55 # define MAP_FILE 0 56 #endif 57 #include <limits.h> 58 #include <signal.h> 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <string.h> 62 #include <unistd.h> 63 #include <stdarg.h> 64 #include <errno.h> 65 66 #define NUMPRINTCOLUMNS 32 /* # columns of data to print on each line */ 67 68 /* 69 * A log entry is an operation and a bunch of arguments. 70 */ 71 72 struct log_entry { 73 int operation; 74 int args[3]; 75 }; 76 77 #define LOGSIZE 1000 78 79 struct log_entry oplog[LOGSIZE]; /* the log */ 80 int logptr = 0; /* current position in log */ 81 int logcount = 0; /* total ops */ 82 83 /* 84 * Define operations 85 */ 86 87 #define OP_READ 1 88 #define OP_WRITE 2 89 #define OP_TRUNCATE 3 90 #define OP_CLOSEOPEN 4 91 #define OP_MAPREAD 5 92 #define OP_MAPWRITE 6 93 #define OP_SKIPPED 7 94 #define OP_INVALIDATE 8 95 96 int page_size; 97 int page_mask; 98 99 char *original_buf; /* a pointer to the original data */ 100 char *good_buf; /* a pointer to the correct data */ 101 char *temp_buf; /* a pointer to the current data */ 102 char *fname; /* name of our test file */ 103 int fd; /* fd for our test file */ 104 105 off_t file_size = 0; 106 off_t biggest = 0; 107 char state[256]; 108 long testcalls = 0; /* calls to function "test" */ 109 110 long simulatedopcount = 0; /* -b flag */ 111 int closeprob = 0; /* -c flag */ 112 int invlprob = 0; /* -i flag */ 113 int debug = 0; /* -d flag */ 114 long debugstart = 0; /* -D flag */ 115 off_t maxfilelen = 256 * 1024; /* -l flag */ 116 int sizechecks = 1; /* -n flag disables them */ 117 int maxoplen = 64 * 1024; /* -o flag */ 118 int quiet = 0; /* -q flag */ 119 unsigned long progressinterval = 0; /* -p flag */ 120 int readbdy = 1; /* -r flag */ 121 int style = 0; /* -s flag */ 122 int truncbdy = 1; /* -t flag */ 123 int writebdy = 1; /* -w flag */ 124 long monitorstart = -1; /* -m flag */ 125 long monitorend = -1; /* -m flag */ 126 int lite = 0; /* -L flag */ 127 long numops = -1; /* -N flag */ 128 int randomoplen = 1; /* -O flag disables it */ 129 int seed = 1; /* -S flag */ 130 int mapped_writes = 1; /* -W flag disables */ 131 int mapped_reads = 1; /* -R flag disables it */ 132 int mapped_msync = 1; /* -U flag disables */ 133 int fsxgoodfd = 0; 134 FILE * fsxlogf = NULL; 135 int badoff = -1; 136 int closeopen = 0; 137 int invl = 0; 138 139 140 void 141 prt(const char *fmt, ...) 142 { 143 va_list args; 144 145 va_start(args, fmt); 146 vfprintf(stdout, fmt, args); 147 va_end(args); 148 149 if (fsxlogf) { 150 va_start(args, fmt); 151 vfprintf(fsxlogf, fmt, args); 152 va_end(args); 153 } 154 } 155 156 void 157 prterr(const char *prefix) 158 { 159 prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno)); 160 } 161 162 163 void 164 do_log4(int operation, int arg0, int arg1, int arg2) 165 { 166 struct log_entry *le; 167 168 le = &oplog[logptr]; 169 le->operation = operation; 170 le->args[0] = arg0; 171 le->args[1] = arg1; 172 le->args[2] = arg2; 173 logptr++; 174 logcount++; 175 if (logptr >= LOGSIZE) 176 logptr = 0; 177 } 178 179 180 void 181 log4(int operation, int arg0, int arg1, int arg2) 182 { 183 do_log4(operation, arg0, arg1, arg2); 184 if (closeopen) 185 do_log4(OP_CLOSEOPEN, 0, 0, 0); 186 if (invl) 187 do_log4(OP_INVALIDATE, 0, 0, 0); 188 } 189 190 191 void 192 logdump(void) 193 { 194 struct log_entry *lp; 195 int i, count, down, opnum; 196 197 prt("LOG DUMP (%d total operations):\n", logcount); 198 if (logcount < LOGSIZE) { 199 i = 0; 200 count = logcount; 201 } else { 202 i = logptr; 203 count = LOGSIZE; 204 } 205 206 opnum = i + 1 + (logcount/LOGSIZE)*LOGSIZE; 207 for ( ; count > 0; count--) { 208 lp = &oplog[i]; 209 210 if (lp->operation == OP_CLOSEOPEN || 211 lp->operation == OP_INVALIDATE) { 212 switch (lp->operation) { 213 case OP_CLOSEOPEN: 214 prt("\t\tCLOSE/OPEN\n"); 215 break; 216 case OP_INVALIDATE: 217 prt("\t\tMS_INVALIDATE\n"); 218 break; 219 } 220 i++; 221 if (i == LOGSIZE) 222 i = 0; 223 continue; 224 } 225 226 prt("%d(%d mod 256): ", opnum, opnum%256); 227 switch (lp->operation) { 228 case OP_MAPREAD: 229 prt("MAPREAD\t0x%x thru 0x%x\t(0x%x bytes)", 230 lp->args[0], lp->args[0] + lp->args[1] - 1, 231 lp->args[1]); 232 if (badoff >= lp->args[0] && badoff < 233 lp->args[0] + lp->args[1]) 234 prt("\t***RRRR***"); 235 break; 236 case OP_MAPWRITE: 237 prt("MAPWRITE 0x%x thru 0x%x\t(0x%x bytes)", 238 lp->args[0], lp->args[0] + lp->args[1] - 1, 239 lp->args[1]); 240 if (badoff >= lp->args[0] && badoff < 241 lp->args[0] + lp->args[1]) 242 prt("\t******WWWW"); 243 break; 244 case OP_READ: 245 prt("READ\t0x%x thru 0x%x\t(0x%x bytes)", 246 lp->args[0], lp->args[0] + lp->args[1] - 1, 247 lp->args[1]); 248 if (badoff >= lp->args[0] && 249 badoff < lp->args[0] + lp->args[1]) 250 prt("\t***RRRR***"); 251 break; 252 case OP_WRITE: 253 { 254 int offset = lp->args[0]; 255 int len = lp->args[1]; 256 int oldlen = lp->args[2]; 257 258 prt("WRITE\t0x%x thru 0x%x\t(0x%x bytes)", 259 offset, offset + len - 1, 260 len); 261 if (offset > oldlen) 262 prt(" HOLE"); 263 else if (offset + len > oldlen) 264 prt(" EXTEND"); 265 if ((badoff >= offset || badoff >=oldlen) && 266 badoff < offset + len) 267 prt("\t***WWWW"); 268 } 269 break; 270 case OP_TRUNCATE: 271 down = lp->args[0] < lp->args[1]; 272 prt("TRUNCATE %s\tfrom 0x%x to 0x%x", 273 down ? "DOWN" : "UP", lp->args[1], lp->args[0]); 274 if (badoff >= lp->args[!down] && 275 badoff < lp->args[!!down]) 276 prt("\t******WWWW"); 277 break; 278 case OP_SKIPPED: 279 prt("SKIPPED (no operation)"); 280 break; 281 default: 282 prt("BOGUS LOG ENTRY (operation code = %d)!", 283 lp->operation); 284 } 285 prt("\n"); 286 opnum++; 287 i++; 288 if (i == LOGSIZE) 289 i = 0; 290 } 291 } 292 293 294 void 295 save_buffer(char *buffer, off_t bufferlength, int savefd) 296 { 297 off_t ret; 298 ssize_t byteswritten; 299 300 if (savefd <= 0 || bufferlength == 0) 301 return; 302 303 if (bufferlength > SSIZE_MAX) { 304 prt("fsx flaw: overflow in save_buffer\n"); 305 exit(67); 306 } 307 if (lite) { 308 off_t size_by_seek = lseek(savefd, (off_t)0, SEEK_END); 309 if (size_by_seek == (off_t)-1) 310 prterr("save_buffer: lseek eof"); 311 else if (bufferlength > size_by_seek) { 312 warn("save_buffer: .fsxgood file too short... will save 0x%llx bytes instead of 0x%llx\n", (unsigned long long)size_by_seek, 313 (unsigned long long)bufferlength); 314 bufferlength = size_by_seek; 315 } 316 } 317 318 ret = lseek(savefd, (off_t)0, SEEK_SET); 319 if (ret == (off_t)-1) 320 prterr("save_buffer: lseek 0"); 321 322 byteswritten = write(savefd, buffer, (size_t)bufferlength); 323 if (byteswritten != bufferlength) { 324 if (byteswritten == -1) 325 prterr("save_buffer write"); 326 else 327 warn("save_buffer: short write, 0x%x bytes instead of 0x%llx\n", 328 (unsigned)byteswritten, 329 (unsigned long long)bufferlength); 330 } 331 } 332 333 334 void 335 report_failure(int status) 336 { 337 logdump(); 338 339 if (fsxgoodfd) { 340 if (good_buf) { 341 save_buffer(good_buf, file_size, fsxgoodfd); 342 prt("Correct content saved for comparison\n"); 343 prt("(maybe hexdump \"%s\" vs \"%s.fsxgood\")\n", 344 fname, fname); 345 } 346 close(fsxgoodfd); 347 } 348 exit(status); 349 } 350 351 352 #define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \ 353 *(((unsigned char *)(cp)) + 1))) 354 355 void 356 check_buffers(unsigned offset, unsigned size) 357 { 358 unsigned char c, t; 359 unsigned i = 0; 360 unsigned n = 0; 361 unsigned op = 0; 362 unsigned bad = 0; 363 364 if (memcmp(good_buf + offset, temp_buf, size) != 0) { 365 prt("READ BAD DATA: offset = 0x%x, size = 0x%x\n", 366 offset, size); 367 prt("OFFSET\tGOOD\tBAD\tRANGE\n"); 368 while (size > 0) { 369 c = good_buf[offset]; 370 t = temp_buf[i]; 371 if (c != t) { 372 if (n == 0) { 373 bad = short_at(&temp_buf[i]); 374 prt("0x%5x\t0x%04x\t0x%04x", offset, 375 short_at(&good_buf[offset]), bad); 376 op = temp_buf[offset & 1 ? i+1 : i]; 377 } 378 n++; 379 badoff = offset; 380 } 381 offset++; 382 i++; 383 size--; 384 } 385 if (n) { 386 prt("\t0x%5x\n", n); 387 if (bad) 388 prt("operation# (mod 256) for the bad data may be %u\n", ((unsigned)op & 0xff)); 389 else 390 prt("operation# (mod 256) for the bad data unknown, check HOLE and EXTEND ops\n"); 391 } else 392 prt("????????????????\n"); 393 report_failure(110); 394 } 395 } 396 397 398 void 399 check_size(void) 400 { 401 struct stat statbuf; 402 off_t size_by_seek; 403 404 if (fstat(fd, &statbuf)) { 405 prterr("check_size: fstat"); 406 statbuf.st_size = -1; 407 } 408 size_by_seek = lseek(fd, (off_t)0, SEEK_END); 409 if (file_size != statbuf.st_size || file_size != size_by_seek) { 410 prt("Size error: expected 0x%llx stat 0x%llx seek 0x%llx\n", 411 (unsigned long long)file_size, 412 (unsigned long long)statbuf.st_size, 413 (unsigned long long)size_by_seek); 414 report_failure(120); 415 } 416 } 417 418 419 void 420 check_trunc_hack(void) 421 { 422 struct stat statbuf; 423 424 ftruncate(fd, (off_t)0); 425 ftruncate(fd, (off_t)100000); 426 fstat(fd, &statbuf); 427 if (statbuf.st_size != (off_t)100000) { 428 prt("no extend on truncate! not posix!\n"); 429 exit(130); 430 } 431 ftruncate(fd, (off_t)0); 432 } 433 434 435 void 436 doread(off_t offset, off_t size) 437 { 438 off_t ret; 439 ssize_t iret; 440 441 offset -= offset % readbdy; 442 if (size == 0) { 443 if (!quiet && testcalls > simulatedopcount) 444 prt("skipping zero size read\n"); 445 log4(OP_SKIPPED, OP_READ, offset, size); 446 return; 447 } 448 if (size + offset > file_size) { 449 if (!quiet && testcalls > simulatedopcount) 450 prt("skipping seek/read past end of file\n"); 451 log4(OP_SKIPPED, OP_READ, offset, size); 452 return; 453 } 454 455 log4(OP_READ, offset, size, 0); 456 457 if (testcalls <= simulatedopcount) 458 return; 459 460 if (!quiet && ((progressinterval && 461 testcalls % progressinterval == 0) || 462 (debug && 463 (monitorstart == -1 || 464 (offset + size > monitorstart && 465 (monitorend == -1 || offset <= monitorend)))))) 466 prt("%lu read\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 467 offset, offset + size - 1, size); 468 ret = lseek(fd, (off_t)offset, SEEK_SET); 469 if (ret == (off_t)-1) { 470 prterr("doread: lseek"); 471 report_failure(140); 472 } 473 iret = read(fd, temp_buf, size); 474 if (iret != size) { 475 if (iret == -1) 476 prterr("doread: read"); 477 else 478 prt("short read: 0x%x bytes instead of 0x%x\n", 479 iret, size); 480 report_failure(141); 481 } 482 check_buffers(offset, size); 483 } 484 485 486 void 487 check_eofpage(const char *s, unsigned offset, char *p, int size) 488 { 489 uintptr_t last_page, should_be_zero; 490 491 if (offset + size <= (file_size & ~page_mask)) 492 return; 493 /* 494 * we landed in the last page of the file 495 * test to make sure the VM system provided 0's 496 * beyond the true end of the file mapping 497 * (as required by mmap def in 1996 posix 1003.1) 498 */ 499 last_page = ((uintptr_t)p + (offset & page_mask) + size) & ~page_mask; 500 501 for (should_be_zero = last_page + (file_size & page_mask); 502 should_be_zero < last_page + page_size; 503 should_be_zero++) 504 if (*(char *)should_be_zero) { 505 prt("Mapped %s: non-zero data past EOF (0x%llx) page offset 0x%x is 0x%04x\n", 506 s, file_size - 1, should_be_zero & page_mask, 507 short_at(should_be_zero)); 508 report_failure(205); 509 } 510 } 511 512 513 void 514 domapread(unsigned offset, unsigned size) 515 { 516 unsigned pg_offset; 517 unsigned map_size; 518 char *p; 519 520 offset -= offset % readbdy; 521 if (size == 0) { 522 if (!quiet && testcalls > simulatedopcount) 523 prt("skipping zero size read\n"); 524 log4(OP_SKIPPED, OP_MAPREAD, offset, size); 525 return; 526 } 527 if (size + offset > file_size) { 528 if (!quiet && testcalls > simulatedopcount) 529 prt("skipping seek/read past end of file\n"); 530 log4(OP_SKIPPED, OP_MAPREAD, offset, size); 531 return; 532 } 533 534 log4(OP_MAPREAD, offset, size, 0); 535 536 if (testcalls <= simulatedopcount) 537 return; 538 539 if (!quiet && ((progressinterval && 540 testcalls % progressinterval == 0) || 541 (debug && 542 (monitorstart == -1 || 543 (offset + size > monitorstart && 544 (monitorend == -1 || offset <= monitorend)))))) 545 prt("%lu mapread\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 546 offset, offset + size - 1, size); 547 548 pg_offset = offset & page_mask; 549 map_size = pg_offset + size; 550 551 if ((p = (char *)mmap(0, map_size, PROT_READ, MAP_FILE | MAP_SHARED, fd, 552 (off_t)(offset - pg_offset))) == (char *)-1) { 553 prterr("domapread: mmap"); 554 report_failure(190); 555 } 556 memcpy(temp_buf, p + pg_offset, size); 557 558 check_eofpage("Read", offset, p, size); 559 560 if (munmap(p, map_size) != 0) { 561 prterr("domapread: munmap"); 562 report_failure(191); 563 } 564 565 check_buffers(offset, size); 566 } 567 568 569 void 570 gendata(unsigned offset, unsigned size) 571 { 572 while (size--) { 573 good_buf[offset] = testcalls % 256; 574 if (offset % 2) 575 good_buf[offset] += original_buf[offset]; 576 offset++; 577 } 578 } 579 580 581 void 582 dowrite(unsigned offset, unsigned size) 583 { 584 off_t ret; 585 ssize_t iret; 586 587 offset -= offset % writebdy; 588 if (size == 0) { 589 if (!quiet && testcalls > simulatedopcount) 590 prt("skipping zero size write\n"); 591 log4(OP_SKIPPED, OP_WRITE, offset, size); 592 return; 593 } 594 595 log4(OP_WRITE, offset, size, file_size); 596 597 gendata(offset, size); 598 if (file_size < offset + size) { 599 if (file_size < offset) 600 memset(good_buf + file_size, '\0', offset - file_size); 601 file_size = offset + size; 602 if (lite) { 603 warn("Lite file size bug in fsx!"); 604 report_failure(149); 605 } 606 } 607 608 if (testcalls <= simulatedopcount) 609 return; 610 611 if (!quiet && ((progressinterval && 612 testcalls % progressinterval == 0) || 613 (debug && 614 (monitorstart == -1 || 615 (offset + size > monitorstart && 616 (monitorend == -1 || offset <= monitorend)))))) 617 prt("%lu write\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 618 offset, offset + size - 1, size); 619 ret = lseek(fd, (off_t)offset, SEEK_SET); 620 if (ret == (off_t)-1) { 621 prterr("dowrite: lseek"); 622 report_failure(150); 623 } 624 iret = write(fd, good_buf + offset, size); 625 if (iret != size) { 626 if (iret == -1) 627 prterr("dowrite: write"); 628 else 629 prt("short write: 0x%x bytes instead of 0x%x\n", 630 iret, size); 631 report_failure(151); 632 } 633 } 634 635 636 void 637 domapwrite(unsigned offset, unsigned size) 638 { 639 unsigned pg_offset; 640 unsigned map_size; 641 off_t cur_filesize; 642 char *p; 643 644 offset -= offset % writebdy; 645 if (size == 0) { 646 if (!quiet && testcalls > simulatedopcount) 647 prt("skipping zero size write\n"); 648 log4(OP_SKIPPED, OP_MAPWRITE, offset, size); 649 return; 650 } 651 cur_filesize = file_size; 652 653 log4(OP_MAPWRITE, offset, size, 0); 654 655 gendata(offset, size); 656 if (file_size < offset + size) { 657 if (file_size < offset) 658 memset(good_buf + file_size, '\0', offset - file_size); 659 file_size = offset + size; 660 if (lite) { 661 warn("Lite file size bug in fsx!"); 662 report_failure(200); 663 } 664 } 665 666 if (testcalls <= simulatedopcount) 667 return; 668 669 if (!quiet && ((progressinterval && 670 testcalls % progressinterval == 0) || 671 (debug && 672 (monitorstart == -1 || 673 (offset + size > monitorstart && 674 (monitorend == -1 || offset <= monitorend)))))) 675 prt("%lu mapwrite\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 676 offset, offset + size - 1, size); 677 678 if (file_size > cur_filesize) { 679 if (ftruncate(fd, file_size) == -1) { 680 prterr("domapwrite: ftruncate"); 681 exit(201); 682 } 683 } 684 pg_offset = offset & page_mask; 685 map_size = pg_offset + size; 686 687 if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE, 688 MAP_FILE | MAP_SHARED, fd, 689 (off_t)(offset - pg_offset))) == MAP_FAILED) { 690 prterr("domapwrite: mmap"); 691 report_failure(202); 692 } 693 memcpy(p + pg_offset, good_buf + offset, size); 694 if (mapped_msync && msync(p, map_size, MS_SYNC) != 0) { 695 prterr("domapwrite: msync"); 696 report_failure(203); 697 } 698 699 check_eofpage("Write", offset, p, size); 700 701 if (munmap(p, map_size) != 0) { 702 prterr("domapwrite: munmap"); 703 report_failure(204); 704 } 705 } 706 707 708 void 709 dotruncate(unsigned size) 710 { 711 int oldsize = file_size; 712 713 size -= size % truncbdy; 714 if (size > biggest) { 715 biggest = size; 716 if (!quiet && testcalls > simulatedopcount) 717 prt("truncating to largest ever: 0x%x\n", size); 718 } 719 720 log4(OP_TRUNCATE, size, (unsigned)file_size, 0); 721 722 if (size > file_size) 723 memset(good_buf + file_size, '\0', size - file_size); 724 file_size = size; 725 726 if (testcalls <= simulatedopcount) 727 return; 728 729 if ((progressinterval && testcalls % progressinterval == 0) || 730 (debug && (monitorstart == -1 || monitorend == -1 || 731 size <= monitorend))) 732 prt("%lu trunc\tfrom 0x%x to 0x%x\n", testcalls, oldsize, size); 733 if (ftruncate(fd, (off_t)size) == -1) { 734 prt("ftruncate1: %x\n", size); 735 prterr("dotruncate: ftruncate"); 736 report_failure(160); 737 } 738 } 739 740 741 void 742 writefileimage() 743 { 744 ssize_t iret; 745 746 if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) { 747 prterr("writefileimage: lseek"); 748 report_failure(171); 749 } 750 iret = write(fd, good_buf, file_size); 751 if ((off_t)iret != file_size) { 752 if (iret == -1) 753 prterr("writefileimage: write"); 754 else 755 prt("short write: 0x%x bytes instead of 0x%llx\n", 756 iret, (unsigned long long)file_size); 757 report_failure(172); 758 } 759 if (lite ? 0 : ftruncate(fd, file_size) == -1) { 760 prt("ftruncate2: %llx\n", (unsigned long long)file_size); 761 prterr("writefileimage: ftruncate"); 762 report_failure(173); 763 } 764 } 765 766 767 void 768 docloseopen(void) 769 { 770 if (testcalls <= simulatedopcount) 771 return; 772 773 if (debug) 774 prt("%lu close/open\n", testcalls); 775 if (close(fd)) { 776 prterr("docloseopen: close"); 777 report_failure(180); 778 } 779 fd = open(fname, O_RDWR, 0); 780 if (fd < 0) { 781 prterr("docloseopen: open"); 782 report_failure(181); 783 } 784 } 785 786 787 void 788 doinvl(void) 789 { 790 char *p; 791 792 if (file_size == 0) 793 return; 794 if (testcalls <= simulatedopcount) 795 return; 796 if (debug) 797 prt("%lu msync(MS_INVALIDATE)\n", testcalls); 798 799 if ((p = (char *)mmap(0, file_size, PROT_READ | PROT_WRITE, 800 MAP_FILE | MAP_SHARED, fd, 0)) == MAP_FAILED) { 801 prterr("doinvl: mmap"); 802 report_failure(205); 803 } 804 805 if (msync(p, 0, MS_SYNC | MS_INVALIDATE) != 0) { 806 prterr("doinvl: msync"); 807 report_failure(206); 808 } 809 810 if (munmap(p, file_size) != 0) { 811 prterr("doinvl: munmap"); 812 report_failure(207); 813 } 814 } 815 816 817 void 818 test(void) 819 { 820 off_t offset; 821 off_t size = maxoplen; 822 unsigned long rv = random(); 823 unsigned long op = rv % (3 + !lite + mapped_writes); 824 825 /* turn off the map read if necessary */ 826 827 if (op == 2 && !mapped_reads) 828 op = 0; 829 830 if (simulatedopcount > 0 && testcalls == simulatedopcount) 831 writefileimage(); 832 833 testcalls++; 834 835 if (closeprob) 836 closeopen = (rv >> 3) < (1ul << 28) / closeprob; 837 if (invlprob) 838 invl = (rv >> 3) < (1ul << 28) / invlprob; 839 840 if (debugstart > 0 && testcalls >= debugstart) 841 debug = 1; 842 843 if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0) 844 prt("%lu...\n", testcalls); 845 846 /* 847 * READ: op = 0 848 * WRITE: op = 1 849 * MAPREAD: op = 2 850 * TRUNCATE: op = 3 851 * MAPWRITE: op = 3 or 4 852 */ 853 if (lite ? 0 : op == 3 && style == 0) /* vanilla truncate? */ 854 dotruncate(random() % maxfilelen); 855 else { 856 if (randomoplen) 857 size = random() % (maxoplen+1); 858 if (lite ? 0 : op == 3) 859 dotruncate(size); 860 else { 861 offset = random(); 862 if (op == 1 || op == (lite ? 3 : 4)) { 863 offset %= maxfilelen; 864 if (offset + size > maxfilelen) 865 size = maxfilelen - offset; 866 if (op != 1) 867 domapwrite(offset, size); 868 else 869 dowrite(offset, size); 870 } else { 871 if (file_size) 872 offset %= file_size; 873 else 874 offset = 0; 875 if (offset + size > file_size) 876 size = file_size - offset; 877 if (op != 0) 878 domapread(offset, size); 879 else 880 doread(offset, size); 881 } 882 } 883 } 884 if (sizechecks && testcalls > simulatedopcount) 885 check_size(); 886 if (invl) 887 doinvl(); 888 if (closeopen) 889 docloseopen(); 890 } 891 892 893 void 894 cleanup(sig) 895 int sig; 896 { 897 if (sig) 898 prt("signal %d\n", sig); 899 prt("testcalls = %lu\n", testcalls); 900 exit(sig); 901 } 902 903 904 void 905 usage(void) 906 { 907 fprintf(stdout, "usage: %s", 908 "fsx [-dnqLOW] [-b opnum] [-c Prob] [-l flen] [-m start:end] [-o oplen] [-p progressinterval] [-r readbdy] [-s style] [-t truncbdy] [-w writebdy] [-D startingop] [-N numops] [-P dirpath] [-S seed] fname\n\ 909 -b opnum: beginning operation number (default 1)\n\ 910 -c P: 1 in P chance of file close+open at each op (default infinity)\n\ 911 -d: debug output for all operations\n\ 912 -i P: 1 in P chance of calling msync(MS_INVALIDATE) (default infinity)\n\ 913 -l flen: the upper bound on file size (default 262144, max 2147483647)\n\ 914 -m startop:endop: monitor (print debug output) specified byte range (default 0:infinity)\n\ 915 -n: no verifications of file size\n\ 916 -o oplen: the upper bound on operation size (default 65536)\n\ 917 -p progressinterval: debug output at specified operation interval\n\ 918 -q: quieter operation\n\ 919 -r readbdy: 4096 would make reads page aligned (default 1)\n\ 920 -s style: 1 gives smaller truncates (default 0)\n\ 921 -t truncbdy: 4096 would make truncates page aligned (default 1)\n\ 922 -w writebdy: 4096 would make writes page aligned (default 1)\n\ 923 -D startingop: debug output starting at specified operation\n\ 924 -L: fsxLite - no file creations & no file size changes\n\ 925 -N numops: total # operations to do (default infinity)\n\ 926 -O: use oplen (see -o flag) for every op (default random)\n\ 927 -P dirpath: save .fsxlog and .fsxgood files in dirpath (default ./)\n\ 928 -S seed: for random # generator (default 1) 0 gets timestamp\n\ 929 -W: mapped write operations DISabled\n\ 930 -R: mapped read operations DISabled)\n\ 931 -U: msync after mapped write operations DISabled\n\ 932 fname: this filename is REQUIRED (no default)\n"); 933 exit(90); 934 } 935 936 937 int 938 getnum(char *s, char **e) 939 { 940 long long ret = -1; 941 942 *e = (char *) 0; 943 ret = strtoll(s, e, 0); 944 if (*e) 945 switch (**e) { 946 case 'b': 947 case 'B': 948 if (ret > INT_MAX / 512) 949 return (-1); 950 ret *= 512; 951 *e = *e + 1; 952 break; 953 case 'k': 954 case 'K': 955 if (ret > INT_MAX / 1024) 956 return (-1); 957 ret *= 1024; 958 *e = *e + 1; 959 break; 960 case 'm': 961 case 'M': 962 if (ret > INT_MAX / 1024 / 1024) 963 return (-1); 964 ret *= 1024*1024; 965 *e = *e + 1; 966 break; 967 case 'w': 968 case 'W': 969 if (ret > INT_MAX / 4) 970 return (-1); 971 ret *= 4; 972 *e = *e + 1; 973 break; 974 default: 975 if (ret > INT_MAX) 976 return (-1); 977 } 978 return (ret); 979 } 980 981 982 int 983 main(int argc, char **argv) 984 { 985 int i, ch; 986 char *endp; 987 char goodfile[1024]; 988 char logfile[1024]; 989 struct timespec now; 990 991 goodfile[0] = 0; 992 logfile[0] = 0; 993 994 page_size = getpagesize(); 995 page_mask = page_size - 1; 996 997 setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */ 998 999 while ((ch = getopt(argc, argv, 1000 "b:c:di:l:m:no:p:qr:s:t:w:D:LN:OP:RS:UW")) != -1) 1001 switch (ch) { 1002 case 'b': 1003 simulatedopcount = getnum(optarg, &endp); 1004 if (!quiet) 1005 fprintf(stdout, "Will begin at operation %ld\n", 1006 simulatedopcount); 1007 if (simulatedopcount == 0) 1008 usage(); 1009 simulatedopcount -= 1; 1010 break; 1011 case 'c': 1012 closeprob = getnum(optarg, &endp); 1013 if (!quiet) 1014 fprintf(stdout, 1015 "Chance of close/open is 1 in %d\n", 1016 closeprob); 1017 if (closeprob <= 0) 1018 usage(); 1019 break; 1020 case 'd': 1021 debug = 1; 1022 break; 1023 case 'i': 1024 invlprob = getnum(optarg, &endp); 1025 if (!quiet) 1026 fprintf(stdout, 1027 "Chance of MS_INVALIDATE is 1 in %d\n", 1028 invlprob); 1029 if (invlprob <= 0) 1030 usage(); 1031 break; 1032 case 'l': 1033 maxfilelen = getnum(optarg, &endp); 1034 if (maxfilelen <= 0) 1035 usage(); 1036 break; 1037 case 'm': 1038 monitorstart = getnum(optarg, &endp); 1039 if (monitorstart < 0) 1040 usage(); 1041 if (!endp || *endp++ != ':') 1042 usage(); 1043 monitorend = getnum(endp, &endp); 1044 if (monitorend < 0) 1045 usage(); 1046 if (monitorend == 0) 1047 monitorend = -1; /* aka infinity */ 1048 debug = 1; 1049 case 'n': 1050 sizechecks = 0; 1051 break; 1052 case 'o': 1053 maxoplen = getnum(optarg, &endp); 1054 if (maxoplen <= 0) 1055 usage(); 1056 break; 1057 case 'p': 1058 progressinterval = getnum(optarg, &endp); 1059 if (progressinterval < 0) 1060 usage(); 1061 break; 1062 case 'q': 1063 quiet = 1; 1064 break; 1065 case 'r': 1066 readbdy = getnum(optarg, &endp); 1067 if (readbdy <= 0) 1068 usage(); 1069 break; 1070 case 's': 1071 style = getnum(optarg, &endp); 1072 if (style < 0 || style > 1) 1073 usage(); 1074 break; 1075 case 't': 1076 truncbdy = getnum(optarg, &endp); 1077 if (truncbdy <= 0) 1078 usage(); 1079 break; 1080 case 'w': 1081 writebdy = getnum(optarg, &endp); 1082 if (writebdy <= 0) 1083 usage(); 1084 break; 1085 case 'D': 1086 debugstart = getnum(optarg, &endp); 1087 if (debugstart < 1) 1088 usage(); 1089 break; 1090 case 'L': 1091 lite = 1; 1092 break; 1093 case 'N': 1094 numops = getnum(optarg, &endp); 1095 if (numops < 0) 1096 usage(); 1097 break; 1098 case 'O': 1099 randomoplen = 0; 1100 break; 1101 case 'P': 1102 strncpy(goodfile, optarg, sizeof(goodfile)); 1103 strcat(goodfile, "/"); 1104 strncpy(logfile, optarg, sizeof(logfile)); 1105 strcat(logfile, "/"); 1106 break; 1107 case 'R': 1108 mapped_reads = 0; 1109 if (!quiet) 1110 fprintf(stdout, "mapped reads DISABLED\n"); 1111 break; 1112 case 'S': 1113 seed = getnum(optarg, &endp); 1114 if (seed == 0) { 1115 if (clock_gettime(CLOCK_REALTIME, &now) != 0) 1116 err(1, "clock_gettime"); 1117 seed = now.tv_nsec % 10000; 1118 } 1119 if (!quiet) 1120 fprintf(stdout, "Seed set to %d\n", seed); 1121 if (seed < 0) 1122 usage(); 1123 break; 1124 case 'W': 1125 mapped_writes = 0; 1126 if (!quiet) 1127 fprintf(stdout, "mapped writes DISABLED\n"); 1128 break; 1129 case 'U': 1130 mapped_msync = 0; 1131 if (!quiet) 1132 fprintf(stdout, "mapped msync DISABLED\n"); 1133 break; 1134 1135 default: 1136 usage(); 1137 /* NOTREACHED */ 1138 } 1139 argc -= optind; 1140 argv += optind; 1141 if (argc != 1) 1142 usage(); 1143 fname = argv[0]; 1144 1145 signal(SIGHUP, cleanup); 1146 signal(SIGINT, cleanup); 1147 signal(SIGPIPE, cleanup); 1148 signal(SIGALRM, cleanup); 1149 signal(SIGTERM, cleanup); 1150 signal(SIGXCPU, cleanup); 1151 signal(SIGXFSZ, cleanup); 1152 signal(SIGVTALRM, cleanup); 1153 signal(SIGUSR1, cleanup); 1154 signal(SIGUSR2, cleanup); 1155 1156 initstate(seed, state, 256); 1157 setstate(state); 1158 fd = open(fname, O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC), 0666); 1159 if (fd < 0) { 1160 prterr(fname); 1161 exit(91); 1162 } 1163 strncat(goodfile, fname, 256); 1164 strcat (goodfile, ".fsxgood"); 1165 fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666); 1166 if (fsxgoodfd < 0) { 1167 prterr(goodfile); 1168 exit(92); 1169 } 1170 strncat(logfile, fname, 256); 1171 strcat (logfile, ".fsxlog"); 1172 fsxlogf = fopen(logfile, "w"); 1173 if (fsxlogf == NULL) { 1174 prterr(logfile); 1175 exit(93); 1176 } 1177 if (lite) { 1178 off_t ret; 1179 file_size = maxfilelen = lseek(fd, (off_t)0, SEEK_END); 1180 if (file_size == (off_t)-1) { 1181 prterr(fname); 1182 warn("main: lseek eof"); 1183 exit(94); 1184 } 1185 ret = lseek(fd, (off_t)0, SEEK_SET); 1186 if (ret == (off_t)-1) { 1187 prterr(fname); 1188 warn("main: lseek 0"); 1189 exit(95); 1190 } 1191 } 1192 original_buf = (char *) malloc(maxfilelen); 1193 for (i = 0; i < maxfilelen; i++) 1194 original_buf[i] = random() % 256; 1195 good_buf = (char *) malloc(maxfilelen); 1196 memset(good_buf, '\0', maxfilelen); 1197 temp_buf = (char *) malloc(maxoplen); 1198 memset(temp_buf, '\0', maxoplen); 1199 if (lite) { /* zero entire existing file */ 1200 ssize_t written; 1201 1202 written = write(fd, good_buf, (size_t)maxfilelen); 1203 if (written != maxfilelen) { 1204 if (written == -1) { 1205 prterr(fname); 1206 warn("main: error on write"); 1207 } else 1208 warn("main: short write, 0x%x bytes instead of 0x%lx\n", 1209 (unsigned)written, maxfilelen); 1210 exit(98); 1211 } 1212 } else 1213 check_trunc_hack(); 1214 1215 while (numops == -1 || numops--) 1216 test(); 1217 1218 if (close(fd)) { 1219 prterr("close"); 1220 report_failure(99); 1221 } 1222 prt("All operations completed A-OK!\n"); 1223 1224 exit(0); 1225 return 0; 1226 } 1227 1228