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