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