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 <fcntl.h> 52 #include <sys/mman.h> 53 #ifndef MAP_FILE 54 # define MAP_FILE 0 55 #endif 56 #include <limits.h> 57 #include <signal.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #include <unistd.h> 62 #include <stdarg.h> 63 #include <errno.h> 64 65 #define NUMPRINTCOLUMNS 32 /* # columns of data to print on each line */ 66 67 /* 68 * A log entry is an operation and a bunch of arguments. 69 */ 70 71 struct log_entry { 72 int operation; 73 int args[3]; 74 }; 75 76 #define LOGSIZE 1000 77 78 struct log_entry oplog[LOGSIZE]; /* the log */ 79 int logptr = 0; /* current position in log */ 80 int logcount = 0; /* total ops */ 81 82 /* 83 * Define operations 84 */ 85 86 #define OP_READ 1 87 #define OP_WRITE 2 88 #define OP_TRUNCATE 3 89 #define OP_CLOSEOPEN 4 90 #define OP_MAPREAD 5 91 #define OP_MAPWRITE 6 92 #define OP_SKIPPED 7 93 #define OP_INVALIDATE 8 94 95 int page_size; 96 int page_mask; 97 98 char *original_buf; /* a pointer to the original data */ 99 char *good_buf; /* a pointer to the correct data */ 100 char *temp_buf; /* a pointer to the current data */ 101 char *fname; /* name of our test file */ 102 int fd; /* fd for our test file */ 103 104 off_t file_size = 0; 105 off_t biggest = 0; 106 char state[256]; 107 unsigned long testcalls = 0; /* calls to function "test" */ 108 109 unsigned long simulatedopcount = 0; /* -b flag */ 110 int closeprob = 0; /* -c flag */ 111 int invlprob = 0; /* -i flag */ 112 int debug = 0; /* -d flag */ 113 unsigned long debugstart = 0; /* -D flag */ 114 unsigned long maxfilelen = 256 * 1024; /* -l flag */ 115 int sizechecks = 1; /* -n flag disables them */ 116 int maxoplen = 64 * 1024; /* -o flag */ 117 int quiet = 0; /* -q flag */ 118 unsigned long progressinterval = 0; /* -p flag */ 119 int readbdy = 1; /* -r flag */ 120 int style = 0; /* -s flag */ 121 int truncbdy = 1; /* -t flag */ 122 int writebdy = 1; /* -w flag */ 123 long monitorstart = -1; /* -m flag */ 124 long monitorend = -1; /* -m flag */ 125 int lite = 0; /* -L flag */ 126 long numops = -1; /* -N flag */ 127 int randomoplen = 1; /* -O flag disables it */ 128 int seed = 1; /* -S flag */ 129 int mapped_writes = 1; /* -W flag disables */ 130 int mapped_reads = 1; /* -R flag disables it */ 131 int mapped_msync = 1; /* -U flag disables */ 132 int fsxgoodfd = 0; 133 FILE * fsxlogf = NULL; 134 int badoff = -1; 135 int closeopen = 0; 136 int invl = 0; 137 138 139 void 140 vwarnc(code, fmt, ap) 141 int code; 142 const char *fmt; 143 va_list ap; 144 { 145 fprintf(stderr, "fsx: "); 146 if (fmt != NULL) { 147 vfprintf(stderr, fmt, ap); 148 fprintf(stderr, ": "); 149 } 150 fprintf(stderr, "%s\n", strerror(code)); 151 } 152 153 154 void 155 warn(const char * fmt, ...) 156 { 157 va_list ap; 158 va_start(ap, fmt); 159 vwarnc(errno, fmt, ap); 160 va_end(ap); 161 } 162 163 164 void 165 prt(char *fmt, ...) 166 { 167 va_list args; 168 169 va_start(args, fmt); 170 vfprintf(stdout, fmt, args); 171 va_end(args); 172 173 if (fsxlogf) { 174 va_start(args, fmt); 175 vfprintf(fsxlogf, fmt, args); 176 va_end(args); 177 } 178 } 179 180 void 181 prterr(char *prefix) 182 { 183 prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno)); 184 } 185 186 187 void 188 do_log4(int operation, int arg0, int arg1, int arg2) 189 { 190 struct log_entry *le; 191 192 le = &oplog[logptr]; 193 le->operation = operation; 194 le->args[0] = arg0; 195 le->args[1] = arg1; 196 le->args[2] = arg2; 197 logptr++; 198 logcount++; 199 if (logptr >= LOGSIZE) 200 logptr = 0; 201 } 202 203 204 void 205 log4(int operation, int arg0, int arg1, int arg2) 206 { 207 do_log4(operation, arg0, arg1, arg2); 208 if (closeopen) 209 do_log4(OP_CLOSEOPEN, 0, 0, 0); 210 if (invl) 211 do_log4(OP_INVALIDATE, 0, 0, 0); 212 } 213 214 215 void 216 logdump(void) 217 { 218 struct log_entry *lp; 219 int i, count, down, opnum; 220 221 prt("LOG DUMP (%d total operations):\n", logcount); 222 if (logcount < LOGSIZE) { 223 i = 0; 224 count = logcount; 225 } else { 226 i = logptr; 227 count = LOGSIZE; 228 } 229 230 opnum = i + 1 + (logcount/LOGSIZE)*LOGSIZE; 231 for ( ; count > 0; count--) { 232 lp = &oplog[i]; 233 234 if (lp->operation == OP_CLOSEOPEN || 235 lp->operation == OP_INVALIDATE) { 236 switch (lp->operation) { 237 case OP_CLOSEOPEN: 238 prt("\t\tCLOSE/OPEN\n"); 239 break; 240 case OP_INVALIDATE: 241 prt("\t\tMS_INVALIDATE\n"); 242 break; 243 } 244 i++; 245 if (i == LOGSIZE) 246 i = 0; 247 continue; 248 } 249 250 prt("%d(%d mod 256): ", opnum, opnum%256); 251 switch (lp->operation) { 252 case OP_MAPREAD: 253 prt("MAPREAD\t0x%x thru 0x%x\t(0x%x bytes)", 254 lp->args[0], lp->args[0] + lp->args[1] - 1, 255 lp->args[1]); 256 if (badoff >= lp->args[0] && badoff < 257 lp->args[0] + lp->args[1]) 258 prt("\t***RRRR***"); 259 break; 260 case OP_MAPWRITE: 261 prt("MAPWRITE 0x%x thru 0x%x\t(0x%x bytes)", 262 lp->args[0], lp->args[0] + lp->args[1] - 1, 263 lp->args[1]); 264 if (badoff >= lp->args[0] && badoff < 265 lp->args[0] + lp->args[1]) 266 prt("\t******WWWW"); 267 break; 268 case OP_READ: 269 prt("READ\t0x%x thru 0x%x\t(0x%x bytes)", 270 lp->args[0], lp->args[0] + lp->args[1] - 1, 271 lp->args[1]); 272 if (badoff >= lp->args[0] && 273 badoff < lp->args[0] + lp->args[1]) 274 prt("\t***RRRR***"); 275 break; 276 case OP_WRITE: 277 prt("WRITE\t0x%x thru 0x%x\t(0x%x bytes)", 278 lp->args[0], lp->args[0] + lp->args[1] - 1, 279 lp->args[1]); 280 if (lp->args[0] > lp->args[2]) 281 prt(" HOLE"); 282 else if (lp->args[0] + lp->args[1] > lp->args[2]) 283 prt(" EXTEND"); 284 if ((badoff >= lp->args[0] || badoff >=lp->args[2]) && 285 badoff < lp->args[0] + lp->args[1]) 286 prt("\t***WWWW"); 287 break; 288 case OP_TRUNCATE: 289 down = lp->args[0] < lp->args[1]; 290 prt("TRUNCATE %s\tfrom 0x%x to 0x%x", 291 down ? "DOWN" : "UP", lp->args[1], lp->args[0]); 292 if (badoff >= lp->args[!down] && 293 badoff < lp->args[!!down]) 294 prt("\t******WWWW"); 295 break; 296 case OP_SKIPPED: 297 prt("SKIPPED (no operation)"); 298 break; 299 default: 300 prt("BOGUS LOG ENTRY (operation code = %d)!", 301 lp->operation); 302 } 303 prt("\n"); 304 opnum++; 305 i++; 306 if (i == LOGSIZE) 307 i = 0; 308 } 309 } 310 311 312 void 313 save_buffer(char *buffer, off_t bufferlength, int fd) 314 { 315 off_t ret; 316 ssize_t byteswritten; 317 318 if (fd <= 0 || bufferlength == 0) 319 return; 320 321 if (bufferlength > SSIZE_MAX) { 322 prt("fsx flaw: overflow in save_buffer\n"); 323 exit(67); 324 } 325 if (lite) { 326 off_t size_by_seek = lseek(fd, (off_t)0, SEEK_END); 327 if (size_by_seek == (off_t)-1) 328 prterr("save_buffer: lseek eof"); 329 else if (bufferlength > size_by_seek) { 330 warn("save_buffer: .fsxgood file too short... will save 0x%llx bytes instead of 0x%llx\n", (unsigned long long)size_by_seek, 331 (unsigned long long)bufferlength); 332 bufferlength = size_by_seek; 333 } 334 } 335 336 ret = lseek(fd, (off_t)0, SEEK_SET); 337 if (ret == (off_t)-1) 338 prterr("save_buffer: lseek 0"); 339 340 byteswritten = write(fd, buffer, (size_t)bufferlength); 341 if (byteswritten != bufferlength) { 342 if (byteswritten == -1) 343 prterr("save_buffer write"); 344 else 345 warn("save_buffer: short write, 0x%x bytes instead of 0x%llx\n", 346 (unsigned)byteswritten, 347 (unsigned long long)bufferlength); 348 } 349 } 350 351 352 void 353 report_failure(int status) 354 { 355 logdump(); 356 357 if (fsxgoodfd) { 358 if (good_buf) { 359 save_buffer(good_buf, file_size, fsxgoodfd); 360 prt("Correct content saved for comparison\n"); 361 prt("(maybe hexdump \"%s\" vs \"%s.fsxgood\")\n", 362 fname, fname); 363 } 364 close(fsxgoodfd); 365 } 366 exit(status); 367 } 368 369 370 #define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \ 371 *(((unsigned char *)(cp)) + 1))) 372 373 void 374 check_buffers(unsigned offset, unsigned size) 375 { 376 unsigned char c, t; 377 unsigned i = 0; 378 unsigned n = 0; 379 unsigned op = 0; 380 unsigned bad = 0; 381 382 if (memcmp(good_buf + offset, temp_buf, size) != 0) { 383 prt("READ BAD DATA: offset = 0x%x, size = 0x%x\n", 384 offset, size); 385 prt("OFFSET\tGOOD\tBAD\tRANGE\n"); 386 while (size > 0) { 387 c = good_buf[offset]; 388 t = temp_buf[i]; 389 if (c != t) { 390 if (n == 0) { 391 bad = short_at(&temp_buf[i]); 392 prt("0x%5x\t0x%04x\t0x%04x", offset, 393 short_at(&good_buf[offset]), bad); 394 op = temp_buf[offset & 1 ? i+1 : i]; 395 } 396 n++; 397 badoff = offset; 398 } 399 offset++; 400 i++; 401 size--; 402 } 403 if (n) { 404 prt("\t0x%5x\n", n); 405 if (bad) 406 prt("operation# (mod 256) for the bad data may be %u\n", ((unsigned)op & 0xff)); 407 else 408 prt("operation# (mod 256) for the bad data unknown, check HOLE and EXTEND ops\n"); 409 } else 410 prt("????????????????\n"); 411 report_failure(110); 412 } 413 } 414 415 416 void 417 check_size(void) 418 { 419 struct stat statbuf; 420 off_t size_by_seek; 421 422 if (fstat(fd, &statbuf)) { 423 prterr("check_size: fstat"); 424 statbuf.st_size = -1; 425 } 426 size_by_seek = lseek(fd, (off_t)0, SEEK_END); 427 if (file_size != statbuf.st_size || file_size != size_by_seek) { 428 prt("Size error: expected 0x%llx stat 0x%llx seek 0x%llx\n", 429 (unsigned long long)file_size, 430 (unsigned long long)statbuf.st_size, 431 (unsigned long long)size_by_seek); 432 report_failure(120); 433 } 434 } 435 436 437 void 438 check_trunc_hack(void) 439 { 440 struct stat statbuf; 441 442 ftruncate(fd, (off_t)0); 443 ftruncate(fd, (off_t)100000); 444 fstat(fd, &statbuf); 445 if (statbuf.st_size != (off_t)100000) { 446 prt("no extend on truncate! not posix!\n"); 447 exit(130); 448 } 449 ftruncate(fd, (off_t)0); 450 } 451 452 453 void 454 doread(unsigned offset, unsigned size) 455 { 456 off_t ret; 457 unsigned iret; 458 459 offset -= offset % readbdy; 460 if (size == 0) { 461 if (!quiet && testcalls > simulatedopcount) 462 prt("skipping zero size read\n"); 463 log4(OP_SKIPPED, OP_READ, offset, size); 464 return; 465 } 466 if (size + offset > file_size) { 467 if (!quiet && testcalls > simulatedopcount) 468 prt("skipping seek/read past end of file\n"); 469 log4(OP_SKIPPED, OP_READ, offset, size); 470 return; 471 } 472 473 log4(OP_READ, offset, size, 0); 474 475 if (testcalls <= simulatedopcount) 476 return; 477 478 if (!quiet && ((progressinterval && 479 testcalls % progressinterval == 0) || 480 (debug && 481 (monitorstart == -1 || 482 (offset + size > monitorstart && 483 (monitorend == -1 || offset <= monitorend)))))) 484 prt("%lu read\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 485 offset, offset + size - 1, size); 486 ret = lseek(fd, (off_t)offset, SEEK_SET); 487 if (ret == (off_t)-1) { 488 prterr("doread: lseek"); 489 report_failure(140); 490 } 491 iret = read(fd, temp_buf, size); 492 if (iret != size) { 493 if (iret == -1) 494 prterr("doread: read"); 495 else 496 prt("short read: 0x%x bytes instead of 0x%x\n", 497 iret, size); 498 report_failure(141); 499 } 500 check_buffers(offset, size); 501 } 502 503 504 void 505 check_eofpage(char *s, unsigned offset, char *p, int size) 506 { 507 uintptr_t last_page, should_be_zero; 508 509 if (offset + size <= (file_size & ~page_mask)) 510 return; 511 /* 512 * we landed in the last page of the file 513 * test to make sure the VM system provided 0's 514 * beyond the true end of the file mapping 515 * (as required by mmap def in 1996 posix 1003.1) 516 */ 517 last_page = ((uintptr_t)p + (offset & page_mask) + size) & ~page_mask; 518 519 for (should_be_zero = last_page + (file_size & page_mask); 520 should_be_zero < last_page + page_size; 521 should_be_zero++) 522 if (*(char *)should_be_zero) { 523 prt("Mapped %s: non-zero data past EOF (0x%llx) page offset 0x%x is 0x%04x\n", 524 s, file_size - 1, should_be_zero & page_mask, 525 short_at(should_be_zero)); 526 report_failure(205); 527 } 528 } 529 530 531 void 532 domapread(unsigned offset, unsigned size) 533 { 534 unsigned pg_offset; 535 unsigned map_size; 536 char *p; 537 538 offset -= offset % readbdy; 539 if (size == 0) { 540 if (!quiet && testcalls > simulatedopcount) 541 prt("skipping zero size read\n"); 542 log4(OP_SKIPPED, OP_MAPREAD, offset, size); 543 return; 544 } 545 if (size + offset > file_size) { 546 if (!quiet && testcalls > simulatedopcount) 547 prt("skipping seek/read past end of file\n"); 548 log4(OP_SKIPPED, OP_MAPREAD, offset, size); 549 return; 550 } 551 552 log4(OP_MAPREAD, offset, size, 0); 553 554 if (testcalls <= simulatedopcount) 555 return; 556 557 if (!quiet && ((progressinterval && 558 testcalls % progressinterval == 0) || 559 (debug && 560 (monitorstart == -1 || 561 (offset + size > monitorstart && 562 (monitorend == -1 || offset <= monitorend)))))) 563 prt("%lu mapread\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 564 offset, offset + size - 1, size); 565 566 pg_offset = offset & page_mask; 567 map_size = pg_offset + size; 568 569 if ((p = (char *)mmap(0, map_size, PROT_READ, MAP_FILE | MAP_SHARED, fd, 570 (off_t)(offset - pg_offset))) == (char *)-1) { 571 prterr("domapread: mmap"); 572 report_failure(190); 573 } 574 memcpy(temp_buf, p + pg_offset, size); 575 576 check_eofpage("Read", offset, p, size); 577 578 if (munmap(p, map_size) != 0) { 579 prterr("domapread: munmap"); 580 report_failure(191); 581 } 582 583 check_buffers(offset, size); 584 } 585 586 587 void 588 gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size) 589 { 590 while (size--) { 591 good_buf[offset] = testcalls % 256; 592 if (offset % 2) 593 good_buf[offset] += original_buf[offset]; 594 offset++; 595 } 596 } 597 598 599 void 600 dowrite(unsigned offset, unsigned size) 601 { 602 off_t ret; 603 unsigned iret; 604 605 offset -= offset % writebdy; 606 if (size == 0) { 607 if (!quiet && testcalls > simulatedopcount) 608 prt("skipping zero size write\n"); 609 log4(OP_SKIPPED, OP_WRITE, offset, size); 610 return; 611 } 612 613 log4(OP_WRITE, offset, size, file_size); 614 615 gendata(original_buf, good_buf, offset, size); 616 if (file_size < offset + size) { 617 if (file_size < offset) 618 memset(good_buf + file_size, '\0', offset - file_size); 619 file_size = offset + size; 620 if (lite) { 621 warn("Lite file size bug in fsx!"); 622 report_failure(149); 623 } 624 } 625 626 if (testcalls <= simulatedopcount) 627 return; 628 629 if (!quiet && ((progressinterval && 630 testcalls % progressinterval == 0) || 631 (debug && 632 (monitorstart == -1 || 633 (offset + size > monitorstart && 634 (monitorend == -1 || offset <= monitorend)))))) 635 prt("%lu write\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 636 offset, offset + size - 1, size); 637 ret = lseek(fd, (off_t)offset, SEEK_SET); 638 if (ret == (off_t)-1) { 639 prterr("dowrite: lseek"); 640 report_failure(150); 641 } 642 iret = write(fd, good_buf + offset, size); 643 if (iret != size) { 644 if (iret == -1) 645 prterr("dowrite: write"); 646 else 647 prt("short write: 0x%x bytes instead of 0x%x\n", 648 iret, size); 649 report_failure(151); 650 } 651 } 652 653 654 void 655 domapwrite(unsigned offset, unsigned size) 656 { 657 unsigned pg_offset; 658 unsigned map_size; 659 off_t cur_filesize; 660 char *p; 661 662 offset -= offset % writebdy; 663 if (size == 0) { 664 if (!quiet && testcalls > simulatedopcount) 665 prt("skipping zero size write\n"); 666 log4(OP_SKIPPED, OP_MAPWRITE, offset, size); 667 return; 668 } 669 cur_filesize = file_size; 670 671 log4(OP_MAPWRITE, offset, size, 0); 672 673 gendata(original_buf, good_buf, offset, size); 674 if (file_size < offset + size) { 675 if (file_size < offset) 676 memset(good_buf + file_size, '\0', offset - file_size); 677 file_size = offset + size; 678 if (lite) { 679 warn("Lite file size bug in fsx!"); 680 report_failure(200); 681 } 682 } 683 684 if (testcalls <= simulatedopcount) 685 return; 686 687 if (!quiet && ((progressinterval && 688 testcalls % progressinterval == 0) || 689 (debug && 690 (monitorstart == -1 || 691 (offset + size > monitorstart && 692 (monitorend == -1 || offset <= monitorend)))))) 693 prt("%lu mapwrite\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 694 offset, offset + size - 1, size); 695 696 if (file_size > cur_filesize) { 697 if (ftruncate(fd, file_size) == -1) { 698 prterr("domapwrite: ftruncate"); 699 exit(201); 700 } 701 } 702 pg_offset = offset & page_mask; 703 map_size = pg_offset + size; 704 705 if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE, 706 MAP_FILE | MAP_SHARED, fd, 707 (off_t)(offset - pg_offset))) == MAP_FAILED) { 708 prterr("domapwrite: mmap"); 709 report_failure(202); 710 } 711 memcpy(p + pg_offset, good_buf + offset, size); 712 if (mapped_msync && msync(p, map_size, MS_SYNC) != 0) { 713 prterr("domapwrite: msync"); 714 report_failure(203); 715 } 716 717 check_eofpage("Write", offset, p, size); 718 719 if (munmap(p, map_size) != 0) { 720 prterr("domapwrite: munmap"); 721 report_failure(204); 722 } 723 } 724 725 726 void 727 dotruncate(unsigned size) 728 { 729 int oldsize = file_size; 730 731 size -= size % truncbdy; 732 if (size > biggest) { 733 biggest = size; 734 if (!quiet && testcalls > simulatedopcount) 735 prt("truncating to largest ever: 0x%x\n", size); 736 } 737 738 log4(OP_TRUNCATE, size, (unsigned)file_size, 0); 739 740 if (size > file_size) 741 memset(good_buf + file_size, '\0', size - file_size); 742 file_size = size; 743 744 if (testcalls <= simulatedopcount) 745 return; 746 747 if ((progressinterval && testcalls % progressinterval == 0) || 748 (debug && (monitorstart == -1 || monitorend == -1 || 749 size <= monitorend))) 750 prt("%lu trunc\tfrom 0x%x to 0x%x\n", testcalls, oldsize, size); 751 if (ftruncate(fd, (off_t)size) == -1) { 752 prt("ftruncate1: %x\n", size); 753 prterr("dotruncate: ftruncate"); 754 report_failure(160); 755 } 756 } 757 758 759 void 760 writefileimage() 761 { 762 ssize_t iret; 763 764 if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) { 765 prterr("writefileimage: lseek"); 766 report_failure(171); 767 } 768 iret = write(fd, good_buf, file_size); 769 if ((off_t)iret != file_size) { 770 if (iret == -1) 771 prterr("writefileimage: write"); 772 else 773 prt("short write: 0x%x bytes instead of 0x%llx\n", 774 iret, (unsigned long long)file_size); 775 report_failure(172); 776 } 777 if (lite ? 0 : ftruncate(fd, file_size) == -1) { 778 prt("ftruncate2: %llx\n", (unsigned long long)file_size); 779 prterr("writefileimage: ftruncate"); 780 report_failure(173); 781 } 782 } 783 784 785 void 786 docloseopen(void) 787 { 788 if (testcalls <= simulatedopcount) 789 return; 790 791 if (debug) 792 prt("%lu close/open\n", testcalls); 793 if (close(fd)) { 794 prterr("docloseopen: close"); 795 report_failure(180); 796 } 797 fd = open(fname, O_RDWR, 0); 798 if (fd < 0) { 799 prterr("docloseopen: open"); 800 report_failure(181); 801 } 802 } 803 804 805 void 806 doinvl(void) 807 { 808 char *p; 809 810 if (file_size == 0) 811 return; 812 if (testcalls <= simulatedopcount) 813 return; 814 if (debug) 815 prt("%lu msync(MS_INVALIDATE)\n", testcalls); 816 817 if ((p = (char *)mmap(0, file_size, PROT_READ | PROT_WRITE, 818 MAP_FILE | MAP_SHARED, fd, 0)) == MAP_FAILED) { 819 prterr("doinvl: mmap"); 820 report_failure(205); 821 } 822 823 if (msync(p, 0, MS_SYNC | MS_INVALIDATE) != 0) { 824 prterr("doinvl: msync"); 825 report_failure(206); 826 } 827 828 if (munmap(p, file_size) != 0) { 829 prterr("doinvl: munmap"); 830 report_failure(207); 831 } 832 } 833 834 835 void 836 test(void) 837 { 838 unsigned long offset; 839 unsigned long size = maxoplen; 840 unsigned long rv = random(); 841 unsigned long op = rv % (3 + !lite + mapped_writes); 842 843 /* turn off the map read if necessary */ 844 845 if (op == 2 && !mapped_reads) 846 op = 0; 847 848 if (simulatedopcount > 0 && testcalls == simulatedopcount) 849 writefileimage(); 850 851 testcalls++; 852 853 if (closeprob) 854 closeopen = (rv >> 3) < (1 << 28) / closeprob; 855 if (invlprob) 856 invl = (rv >> 3) < (1 << 28) / invlprob; 857 858 if (debugstart > 0 && testcalls >= debugstart) 859 debug = 1; 860 861 if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0) 862 prt("%lu...\n", testcalls); 863 864 /* 865 * READ: op = 0 866 * WRITE: op = 1 867 * MAPREAD: op = 2 868 * TRUNCATE: op = 3 869 * MAPWRITE: op = 3 or 4 870 */ 871 if (lite ? 0 : op == 3 && style == 0) /* vanilla truncate? */ 872 dotruncate(random() % maxfilelen); 873 else { 874 if (randomoplen) 875 size = random() % (maxoplen+1); 876 if (lite ? 0 : op == 3) 877 dotruncate(size); 878 else { 879 offset = random(); 880 if (op == 1 || op == (lite ? 3 : 4)) { 881 offset %= maxfilelen; 882 if (offset + size > maxfilelen) 883 size = maxfilelen - offset; 884 if (op != 1) 885 domapwrite(offset, size); 886 else 887 dowrite(offset, size); 888 } else { 889 if (file_size) 890 offset %= file_size; 891 else 892 offset = 0; 893 if (offset + size > file_size) 894 size = file_size - offset; 895 if (op != 0) 896 domapread(offset, size); 897 else 898 doread(offset, size); 899 } 900 } 901 } 902 if (sizechecks && testcalls > simulatedopcount) 903 check_size(); 904 if (invl) 905 doinvl(); 906 if (closeopen) 907 docloseopen(); 908 } 909 910 911 void 912 cleanup(sig) 913 int sig; 914 { 915 if (sig) 916 prt("signal %d\n", sig); 917 prt("testcalls = %lu\n", testcalls); 918 exit(sig); 919 } 920 921 922 void 923 usage(void) 924 { 925 fprintf(stdout, "usage: %s", 926 "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\ 927 -b opnum: beginning operation number (default 1)\n\ 928 -c P: 1 in P chance of file close+open at each op (default infinity)\n\ 929 -d: debug output for all operations\n\ 930 -i P: 1 in P chance of calling msync(MS_INVALIDATE) (default infinity)\n\ 931 -l flen: the upper bound on file size (default 262144)\n\ 932 -m startop:endop: monitor (print debug output) specified byte range (default 0:infinity)\n\ 933 -n: no verifications of file size\n\ 934 -o oplen: the upper bound on operation size (default 65536)\n\ 935 -p progressinterval: debug output at specified operation interval\n\ 936 -q: quieter operation\n\ 937 -r readbdy: 4096 would make reads page aligned (default 1)\n\ 938 -s style: 1 gives smaller truncates (default 0)\n\ 939 -t truncbdy: 4096 would make truncates page aligned (default 1)\n\ 940 -w writebdy: 4096 would make writes page aligned (default 1)\n\ 941 -D startingop: debug output starting at specified operation\n\ 942 -L: fsxLite - no file creations & no file size changes\n\ 943 -N numops: total # operations to do (default infinity)\n\ 944 -O: use oplen (see -o flag) for every op (default random)\n\ 945 -P dirpath: save .fsxlog and .fsxgood files in dirpath (default ./)\n\ 946 -S seed: for random # generator (default 1) 0 gets timestamp\n\ 947 -W: mapped write operations DISabled\n\ 948 -R: mapped read operations DISabled)\n\ 949 -U: msync after mapped write operations DISabled\n\ 950 fname: this filename is REQUIRED (no default)\n"); 951 exit(90); 952 } 953 954 955 int 956 getnum(char *s, char **e) 957 { 958 int ret = -1; 959 960 *e = (char *) 0; 961 ret = strtol(s, e, 0); 962 if (*e) 963 switch (**e) { 964 case 'b': 965 case 'B': 966 ret *= 512; 967 *e = *e + 1; 968 break; 969 case 'k': 970 case 'K': 971 ret *= 1024; 972 *e = *e + 1; 973 break; 974 case 'm': 975 case 'M': 976 ret *= 1024*1024; 977 *e = *e + 1; 978 break; 979 case 'w': 980 case 'W': 981 ret *= 4; 982 *e = *e + 1; 983 break; 984 } 985 return (ret); 986 } 987 988 989 int 990 main(int argc, char **argv) 991 { 992 int i, ch; 993 char *endp; 994 char goodfile[1024]; 995 char logfile[1024]; 996 997 goodfile[0] = 0; 998 logfile[0] = 0; 999 1000 page_size = getpagesize(); 1001 page_mask = page_size - 1; 1002 1003 setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */ 1004 1005 while ((ch = getopt(argc, argv, 1006 "b:c:di:l:m:no:p:qr:s:t:w:D:LN:OP:RS:UW")) != -1) 1007 switch (ch) { 1008 case 'b': 1009 simulatedopcount = getnum(optarg, &endp); 1010 if (!quiet) 1011 fprintf(stdout, "Will begin at operation %ld\n", 1012 simulatedopcount); 1013 if (simulatedopcount == 0) 1014 usage(); 1015 simulatedopcount -= 1; 1016 break; 1017 case 'c': 1018 closeprob = getnum(optarg, &endp); 1019 if (!quiet) 1020 fprintf(stdout, 1021 "Chance of close/open is 1 in %d\n", 1022 closeprob); 1023 if (closeprob <= 0) 1024 usage(); 1025 break; 1026 case 'd': 1027 debug = 1; 1028 break; 1029 case 'i': 1030 invlprob = getnum(optarg, &endp); 1031 if (!quiet) 1032 fprintf(stdout, 1033 "Chance of MS_INVALIDATE is 1 in %d\n", 1034 invlprob); 1035 if (invlprob <= 0) 1036 usage(); 1037 break; 1038 case 'l': 1039 maxfilelen = getnum(optarg, &endp); 1040 if (maxfilelen <= 0) 1041 usage(); 1042 break; 1043 case 'm': 1044 monitorstart = getnum(optarg, &endp); 1045 if (monitorstart < 0) 1046 usage(); 1047 if (!endp || *endp++ != ':') 1048 usage(); 1049 monitorend = getnum(endp, &endp); 1050 if (monitorend < 0) 1051 usage(); 1052 if (monitorend == 0) 1053 monitorend = -1; /* aka infinity */ 1054 debug = 1; 1055 case 'n': 1056 sizechecks = 0; 1057 break; 1058 case 'o': 1059 maxoplen = getnum(optarg, &endp); 1060 if (maxoplen <= 0) 1061 usage(); 1062 break; 1063 case 'p': 1064 progressinterval = getnum(optarg, &endp); 1065 if (progressinterval < 0) 1066 usage(); 1067 break; 1068 case 'q': 1069 quiet = 1; 1070 break; 1071 case 'r': 1072 readbdy = getnum(optarg, &endp); 1073 if (readbdy <= 0) 1074 usage(); 1075 break; 1076 case 's': 1077 style = getnum(optarg, &endp); 1078 if (style < 0 || style > 1) 1079 usage(); 1080 break; 1081 case 't': 1082 truncbdy = getnum(optarg, &endp); 1083 if (truncbdy <= 0) 1084 usage(); 1085 break; 1086 case 'w': 1087 writebdy = getnum(optarg, &endp); 1088 if (writebdy <= 0) 1089 usage(); 1090 break; 1091 case 'D': 1092 debugstart = getnum(optarg, &endp); 1093 if (debugstart < 1) 1094 usage(); 1095 break; 1096 case 'L': 1097 lite = 1; 1098 break; 1099 case 'N': 1100 numops = getnum(optarg, &endp); 1101 if (numops < 0) 1102 usage(); 1103 break; 1104 case 'O': 1105 randomoplen = 0; 1106 break; 1107 case 'P': 1108 strncpy(goodfile, optarg, sizeof(goodfile)); 1109 strcat(goodfile, "/"); 1110 strncpy(logfile, optarg, sizeof(logfile)); 1111 strcat(logfile, "/"); 1112 break; 1113 case 'R': 1114 mapped_reads = 0; 1115 break; 1116 case 'S': 1117 seed = getnum(optarg, &endp); 1118 if (seed == 0) 1119 seed = time(0) % 10000; 1120 if (!quiet) 1121 fprintf(stdout, "Seed set to %d\n", seed); 1122 if (seed < 0) 1123 usage(); 1124 break; 1125 case 'W': 1126 mapped_writes = 0; 1127 if (!quiet) 1128 fprintf(stdout, "mapped writes DISABLED\n"); 1129 break; 1130 case 'U': 1131 mapped_msync = 0; 1132 if (!quiet) 1133 fprintf(stdout, "mapped msync DISABLED\n"); 1134 break; 1135 1136 default: 1137 usage(); 1138 /* NOTREACHED */ 1139 } 1140 argc -= optind; 1141 argv += optind; 1142 if (argc != 1) 1143 usage(); 1144 fname = argv[0]; 1145 1146 signal(SIGHUP, cleanup); 1147 signal(SIGINT, cleanup); 1148 signal(SIGPIPE, cleanup); 1149 signal(SIGALRM, cleanup); 1150 signal(SIGTERM, cleanup); 1151 signal(SIGXCPU, cleanup); 1152 signal(SIGXFSZ, cleanup); 1153 signal(SIGVTALRM, cleanup); 1154 signal(SIGUSR1, cleanup); 1155 signal(SIGUSR2, cleanup); 1156 1157 initstate(seed, state, 256); 1158 setstate(state); 1159 fd = open(fname, O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC), 0666); 1160 if (fd < 0) { 1161 prterr(fname); 1162 exit(91); 1163 } 1164 strncat(goodfile, fname, 256); 1165 strcat (goodfile, ".fsxgood"); 1166 fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666); 1167 if (fsxgoodfd < 0) { 1168 prterr(goodfile); 1169 exit(92); 1170 } 1171 strncat(logfile, fname, 256); 1172 strcat (logfile, ".fsxlog"); 1173 fsxlogf = fopen(logfile, "w"); 1174 if (fsxlogf == NULL) { 1175 prterr(logfile); 1176 exit(93); 1177 } 1178 if (lite) { 1179 off_t ret; 1180 file_size = maxfilelen = lseek(fd, (off_t)0, SEEK_END); 1181 if (file_size == (off_t)-1) { 1182 prterr(fname); 1183 warn("main: lseek eof"); 1184 exit(94); 1185 } 1186 ret = lseek(fd, (off_t)0, SEEK_SET); 1187 if (ret == (off_t)-1) { 1188 prterr(fname); 1189 warn("main: lseek 0"); 1190 exit(95); 1191 } 1192 } 1193 original_buf = (char *) malloc(maxfilelen); 1194 for (i = 0; i < maxfilelen; i++) 1195 original_buf[i] = random() % 256; 1196 good_buf = (char *) malloc(maxfilelen); 1197 memset(good_buf, '\0', maxfilelen); 1198 temp_buf = (char *) malloc(maxoplen); 1199 memset(temp_buf, '\0', maxoplen); 1200 if (lite) { /* zero entire existing file */ 1201 ssize_t written; 1202 1203 written = write(fd, good_buf, (size_t)maxfilelen); 1204 if (written != maxfilelen) { 1205 if (written == -1) { 1206 prterr(fname); 1207 warn("main: error on write"); 1208 } else 1209 warn("main: short write, 0x%x bytes instead of 0x%x\n", 1210 (unsigned)written, maxfilelen); 1211 exit(98); 1212 } 1213 } else 1214 check_trunc_hack(); 1215 1216 while (numops == -1 || numops--) 1217 test(); 1218 1219 if (close(fd)) { 1220 prterr("close"); 1221 report_failure(99); 1222 } 1223 prt("All operations completed A-OK!\n"); 1224 1225 exit(0); 1226 return 0; 1227 } 1228 1229