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 unsigned long testcalls = 0; /* calls to function "test" */ 109 110 unsigned long simulatedopcount = 0; /* -b flag */ 111 int closeprob = 0; /* -c flag */ 112 int invlprob = 0; /* -i flag */ 113 int debug = 0; /* -d flag */ 114 unsigned long debugstart = 0; /* -D flag */ 115 unsigned long 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 vwarnc(code, fmt, ap) 142 int code; 143 const char *fmt; 144 va_list ap; 145 { 146 fprintf(stderr, "fsx: "); 147 if (fmt != NULL) { 148 vfprintf(stderr, fmt, ap); 149 fprintf(stderr, ": "); 150 } 151 fprintf(stderr, "%s\n", strerror(code)); 152 } 153 154 155 void 156 warn(const char * fmt, ...) 157 { 158 va_list ap; 159 va_start(ap, fmt); 160 vwarnc(errno, fmt, ap); 161 va_end(ap); 162 } 163 164 165 void 166 prt(char *fmt, ...) 167 { 168 va_list args; 169 170 va_start(args, fmt); 171 vfprintf(stdout, fmt, args); 172 va_end(args); 173 174 if (fsxlogf) { 175 va_start(args, fmt); 176 vfprintf(fsxlogf, fmt, args); 177 va_end(args); 178 } 179 } 180 181 void 182 prterr(char *prefix) 183 { 184 prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno)); 185 } 186 187 188 void 189 do_log4(int operation, int arg0, int arg1, int arg2) 190 { 191 struct log_entry *le; 192 193 le = &oplog[logptr]; 194 le->operation = operation; 195 le->args[0] = arg0; 196 le->args[1] = arg1; 197 le->args[2] = arg2; 198 logptr++; 199 logcount++; 200 if (logptr >= LOGSIZE) 201 logptr = 0; 202 } 203 204 205 void 206 log4(int operation, int arg0, int arg1, int arg2) 207 { 208 do_log4(operation, arg0, arg1, arg2); 209 if (closeopen) 210 do_log4(OP_CLOSEOPEN, 0, 0, 0); 211 if (invl) 212 do_log4(OP_INVALIDATE, 0, 0, 0); 213 } 214 215 216 void 217 logdump(void) 218 { 219 struct log_entry *lp; 220 int i, count, down, opnum; 221 222 prt("LOG DUMP (%d total operations):\n", logcount); 223 if (logcount < LOGSIZE) { 224 i = 0; 225 count = logcount; 226 } else { 227 i = logptr; 228 count = LOGSIZE; 229 } 230 231 opnum = i + 1 + (logcount/LOGSIZE)*LOGSIZE; 232 for ( ; count > 0; count--) { 233 lp = &oplog[i]; 234 235 if (lp->operation == OP_CLOSEOPEN || 236 lp->operation == OP_INVALIDATE) { 237 switch (lp->operation) { 238 case OP_CLOSEOPEN: 239 prt("\t\tCLOSE/OPEN\n"); 240 break; 241 case OP_INVALIDATE: 242 prt("\t\tMS_INVALIDATE\n"); 243 break; 244 } 245 i++; 246 if (i == LOGSIZE) 247 i = 0; 248 continue; 249 } 250 251 prt("%d(%d mod 256): ", opnum, opnum%256); 252 switch (lp->operation) { 253 case OP_MAPREAD: 254 prt("MAPREAD\t0x%x thru 0x%x\t(0x%x bytes)", 255 lp->args[0], lp->args[0] + lp->args[1] - 1, 256 lp->args[1]); 257 if (badoff >= lp->args[0] && badoff < 258 lp->args[0] + lp->args[1]) 259 prt("\t***RRRR***"); 260 break; 261 case OP_MAPWRITE: 262 prt("MAPWRITE 0x%x thru 0x%x\t(0x%x bytes)", 263 lp->args[0], lp->args[0] + lp->args[1] - 1, 264 lp->args[1]); 265 if (badoff >= lp->args[0] && badoff < 266 lp->args[0] + lp->args[1]) 267 prt("\t******WWWW"); 268 break; 269 case OP_READ: 270 prt("READ\t0x%x thru 0x%x\t(0x%x bytes)", 271 lp->args[0], lp->args[0] + lp->args[1] - 1, 272 lp->args[1]); 273 if (badoff >= lp->args[0] && 274 badoff < lp->args[0] + lp->args[1]) 275 prt("\t***RRRR***"); 276 break; 277 case OP_WRITE: 278 { 279 int offset = lp->args[0]; 280 int len = lp->args[1]; 281 int oldlen = lp->args[2]; 282 283 prt("WRITE\t0x%x thru 0x%x\t(0x%x bytes)", 284 offset, offset + len - 1, 285 len); 286 if (offset > oldlen) 287 prt(" HOLE"); 288 else if (offset + len > oldlen) 289 prt(" EXTEND"); 290 if ((badoff >= offset || badoff >=oldlen) && 291 badoff < offset + len) 292 prt("\t***WWWW"); 293 } 294 break; 295 case OP_TRUNCATE: 296 down = lp->args[0] < lp->args[1]; 297 prt("TRUNCATE %s\tfrom 0x%x to 0x%x", 298 down ? "DOWN" : "UP", lp->args[1], lp->args[0]); 299 if (badoff >= lp->args[!down] && 300 badoff < lp->args[!!down]) 301 prt("\t******WWWW"); 302 break; 303 case OP_SKIPPED: 304 prt("SKIPPED (no operation)"); 305 break; 306 default: 307 prt("BOGUS LOG ENTRY (operation code = %d)!", 308 lp->operation); 309 } 310 prt("\n"); 311 opnum++; 312 i++; 313 if (i == LOGSIZE) 314 i = 0; 315 } 316 } 317 318 319 void 320 save_buffer(char *buffer, off_t bufferlength, int fd) 321 { 322 off_t ret; 323 ssize_t byteswritten; 324 325 if (fd <= 0 || bufferlength == 0) 326 return; 327 328 if (bufferlength > SSIZE_MAX) { 329 prt("fsx flaw: overflow in save_buffer\n"); 330 exit(67); 331 } 332 if (lite) { 333 off_t size_by_seek = lseek(fd, (off_t)0, SEEK_END); 334 if (size_by_seek == (off_t)-1) 335 prterr("save_buffer: lseek eof"); 336 else if (bufferlength > size_by_seek) { 337 warn("save_buffer: .fsxgood file too short... will save 0x%llx bytes instead of 0x%llx\n", (unsigned long long)size_by_seek, 338 (unsigned long long)bufferlength); 339 bufferlength = size_by_seek; 340 } 341 } 342 343 ret = lseek(fd, (off_t)0, SEEK_SET); 344 if (ret == (off_t)-1) 345 prterr("save_buffer: lseek 0"); 346 347 byteswritten = write(fd, buffer, (size_t)bufferlength); 348 if (byteswritten != bufferlength) { 349 if (byteswritten == -1) 350 prterr("save_buffer write"); 351 else 352 warn("save_buffer: short write, 0x%x bytes instead of 0x%llx\n", 353 (unsigned)byteswritten, 354 (unsigned long long)bufferlength); 355 } 356 } 357 358 359 void 360 report_failure(int status) 361 { 362 logdump(); 363 364 if (fsxgoodfd) { 365 if (good_buf) { 366 save_buffer(good_buf, file_size, fsxgoodfd); 367 prt("Correct content saved for comparison\n"); 368 prt("(maybe hexdump \"%s\" vs \"%s.fsxgood\")\n", 369 fname, fname); 370 } 371 close(fsxgoodfd); 372 } 373 exit(status); 374 } 375 376 377 #define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \ 378 *(((unsigned char *)(cp)) + 1))) 379 380 void 381 check_buffers(unsigned offset, unsigned size) 382 { 383 unsigned char c, t; 384 unsigned i = 0; 385 unsigned n = 0; 386 unsigned op = 0; 387 unsigned bad = 0; 388 389 if (memcmp(good_buf + offset, temp_buf, size) != 0) { 390 prt("READ BAD DATA: offset = 0x%x, size = 0x%x\n", 391 offset, size); 392 prt("OFFSET\tGOOD\tBAD\tRANGE\n"); 393 while (size > 0) { 394 c = good_buf[offset]; 395 t = temp_buf[i]; 396 if (c != t) { 397 if (n == 0) { 398 bad = short_at(&temp_buf[i]); 399 prt("0x%5x\t0x%04x\t0x%04x", offset, 400 short_at(&good_buf[offset]), bad); 401 op = temp_buf[offset & 1 ? i+1 : i]; 402 } 403 n++; 404 badoff = offset; 405 } 406 offset++; 407 i++; 408 size--; 409 } 410 if (n) { 411 prt("\t0x%5x\n", n); 412 if (bad) 413 prt("operation# (mod 256) for the bad data may be %u\n", ((unsigned)op & 0xff)); 414 else 415 prt("operation# (mod 256) for the bad data unknown, check HOLE and EXTEND ops\n"); 416 } else 417 prt("????????????????\n"); 418 report_failure(110); 419 } 420 } 421 422 423 void 424 check_size(void) 425 { 426 struct stat statbuf; 427 off_t size_by_seek; 428 429 if (fstat(fd, &statbuf)) { 430 prterr("check_size: fstat"); 431 statbuf.st_size = -1; 432 } 433 size_by_seek = lseek(fd, (off_t)0, SEEK_END); 434 if (file_size != statbuf.st_size || file_size != size_by_seek) { 435 prt("Size error: expected 0x%llx stat 0x%llx seek 0x%llx\n", 436 (unsigned long long)file_size, 437 (unsigned long long)statbuf.st_size, 438 (unsigned long long)size_by_seek); 439 report_failure(120); 440 } 441 } 442 443 444 void 445 check_trunc_hack(void) 446 { 447 struct stat statbuf; 448 449 ftruncate(fd, (off_t)0); 450 ftruncate(fd, (off_t)100000); 451 fstat(fd, &statbuf); 452 if (statbuf.st_size != (off_t)100000) { 453 prt("no extend on truncate! not posix!\n"); 454 exit(130); 455 } 456 ftruncate(fd, (off_t)0); 457 } 458 459 460 void 461 doread(unsigned offset, unsigned size) 462 { 463 off_t ret; 464 unsigned iret; 465 466 offset -= offset % readbdy; 467 if (size == 0) { 468 if (!quiet && testcalls > simulatedopcount) 469 prt("skipping zero size read\n"); 470 log4(OP_SKIPPED, OP_READ, offset, size); 471 return; 472 } 473 if (size + offset > file_size) { 474 if (!quiet && testcalls > simulatedopcount) 475 prt("skipping seek/read past end of file\n"); 476 log4(OP_SKIPPED, OP_READ, offset, size); 477 return; 478 } 479 480 log4(OP_READ, offset, size, 0); 481 482 if (testcalls <= simulatedopcount) 483 return; 484 485 if (!quiet && ((progressinterval && 486 testcalls % progressinterval == 0) || 487 (debug && 488 (monitorstart == -1 || 489 (offset + size > monitorstart && 490 (monitorend == -1 || offset <= monitorend)))))) 491 prt("%lu read\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 492 offset, offset + size - 1, size); 493 ret = lseek(fd, (off_t)offset, SEEK_SET); 494 if (ret == (off_t)-1) { 495 prterr("doread: lseek"); 496 report_failure(140); 497 } 498 iret = read(fd, temp_buf, size); 499 if (iret != size) { 500 if (iret == -1) 501 prterr("doread: read"); 502 else 503 prt("short read: 0x%x bytes instead of 0x%x\n", 504 iret, size); 505 report_failure(141); 506 } 507 check_buffers(offset, size); 508 } 509 510 511 void 512 check_eofpage(char *s, unsigned offset, char *p, int size) 513 { 514 uintptr_t last_page, should_be_zero; 515 516 if (offset + size <= (file_size & ~page_mask)) 517 return; 518 /* 519 * we landed in the last page of the file 520 * test to make sure the VM system provided 0's 521 * beyond the true end of the file mapping 522 * (as required by mmap def in 1996 posix 1003.1) 523 */ 524 last_page = ((uintptr_t)p + (offset & page_mask) + size) & ~page_mask; 525 526 for (should_be_zero = last_page + (file_size & page_mask); 527 should_be_zero < last_page + page_size; 528 should_be_zero++) 529 if (*(char *)should_be_zero) { 530 prt("Mapped %s: non-zero data past EOF (0x%llx) page offset 0x%x is 0x%04x\n", 531 s, file_size - 1, should_be_zero & page_mask, 532 short_at(should_be_zero)); 533 report_failure(205); 534 } 535 } 536 537 538 void 539 domapread(unsigned offset, unsigned size) 540 { 541 unsigned pg_offset; 542 unsigned map_size; 543 char *p; 544 545 offset -= offset % readbdy; 546 if (size == 0) { 547 if (!quiet && testcalls > simulatedopcount) 548 prt("skipping zero size read\n"); 549 log4(OP_SKIPPED, OP_MAPREAD, offset, size); 550 return; 551 } 552 if (size + offset > file_size) { 553 if (!quiet && testcalls > simulatedopcount) 554 prt("skipping seek/read past end of file\n"); 555 log4(OP_SKIPPED, OP_MAPREAD, offset, size); 556 return; 557 } 558 559 log4(OP_MAPREAD, offset, size, 0); 560 561 if (testcalls <= simulatedopcount) 562 return; 563 564 if (!quiet && ((progressinterval && 565 testcalls % progressinterval == 0) || 566 (debug && 567 (monitorstart == -1 || 568 (offset + size > monitorstart && 569 (monitorend == -1 || offset <= monitorend)))))) 570 prt("%lu mapread\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 571 offset, offset + size - 1, size); 572 573 pg_offset = offset & page_mask; 574 map_size = pg_offset + size; 575 576 if ((p = (char *)mmap(0, map_size, PROT_READ, MAP_FILE | MAP_SHARED, fd, 577 (off_t)(offset - pg_offset))) == (char *)-1) { 578 prterr("domapread: mmap"); 579 report_failure(190); 580 } 581 memcpy(temp_buf, p + pg_offset, size); 582 583 check_eofpage("Read", offset, p, size); 584 585 if (munmap(p, map_size) != 0) { 586 prterr("domapread: munmap"); 587 report_failure(191); 588 } 589 590 check_buffers(offset, size); 591 } 592 593 594 void 595 gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size) 596 { 597 while (size--) { 598 good_buf[offset] = testcalls % 256; 599 if (offset % 2) 600 good_buf[offset] += original_buf[offset]; 601 offset++; 602 } 603 } 604 605 606 void 607 dowrite(unsigned offset, unsigned size) 608 { 609 off_t ret; 610 unsigned iret; 611 612 offset -= offset % writebdy; 613 if (size == 0) { 614 if (!quiet && testcalls > simulatedopcount) 615 prt("skipping zero size write\n"); 616 log4(OP_SKIPPED, OP_WRITE, offset, size); 617 return; 618 } 619 620 log4(OP_WRITE, offset, size, file_size); 621 622 gendata(original_buf, good_buf, offset, size); 623 if (file_size < offset + size) { 624 if (file_size < offset) 625 memset(good_buf + file_size, '\0', offset - file_size); 626 file_size = offset + size; 627 if (lite) { 628 warn("Lite file size bug in fsx!"); 629 report_failure(149); 630 } 631 } 632 633 if (testcalls <= simulatedopcount) 634 return; 635 636 if (!quiet && ((progressinterval && 637 testcalls % progressinterval == 0) || 638 (debug && 639 (monitorstart == -1 || 640 (offset + size > monitorstart && 641 (monitorend == -1 || offset <= monitorend)))))) 642 prt("%lu write\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 643 offset, offset + size - 1, size); 644 ret = lseek(fd, (off_t)offset, SEEK_SET); 645 if (ret == (off_t)-1) { 646 prterr("dowrite: lseek"); 647 report_failure(150); 648 } 649 iret = write(fd, good_buf + offset, size); 650 if (iret != size) { 651 if (iret == -1) 652 prterr("dowrite: write"); 653 else 654 prt("short write: 0x%x bytes instead of 0x%x\n", 655 iret, size); 656 report_failure(151); 657 } 658 } 659 660 661 void 662 domapwrite(unsigned offset, unsigned size) 663 { 664 unsigned pg_offset; 665 unsigned map_size; 666 off_t cur_filesize; 667 char *p; 668 669 offset -= offset % writebdy; 670 if (size == 0) { 671 if (!quiet && testcalls > simulatedopcount) 672 prt("skipping zero size write\n"); 673 log4(OP_SKIPPED, OP_MAPWRITE, offset, size); 674 return; 675 } 676 cur_filesize = file_size; 677 678 log4(OP_MAPWRITE, offset, size, 0); 679 680 gendata(original_buf, good_buf, offset, size); 681 if (file_size < offset + size) { 682 if (file_size < offset) 683 memset(good_buf + file_size, '\0', offset - file_size); 684 file_size = offset + size; 685 if (lite) { 686 warn("Lite file size bug in fsx!"); 687 report_failure(200); 688 } 689 } 690 691 if (testcalls <= simulatedopcount) 692 return; 693 694 if (!quiet && ((progressinterval && 695 testcalls % progressinterval == 0) || 696 (debug && 697 (monitorstart == -1 || 698 (offset + size > monitorstart && 699 (monitorend == -1 || offset <= monitorend)))))) 700 prt("%lu mapwrite\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 701 offset, offset + size - 1, size); 702 703 if (file_size > cur_filesize) { 704 if (ftruncate(fd, file_size) == -1) { 705 prterr("domapwrite: ftruncate"); 706 exit(201); 707 } 708 } 709 pg_offset = offset & page_mask; 710 map_size = pg_offset + size; 711 712 if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE, 713 MAP_FILE | MAP_SHARED, fd, 714 (off_t)(offset - pg_offset))) == MAP_FAILED) { 715 prterr("domapwrite: mmap"); 716 report_failure(202); 717 } 718 memcpy(p + pg_offset, good_buf + offset, size); 719 if (mapped_msync && msync(p, map_size, MS_SYNC) != 0) { 720 prterr("domapwrite: msync"); 721 report_failure(203); 722 } 723 724 check_eofpage("Write", offset, p, size); 725 726 if (munmap(p, map_size) != 0) { 727 prterr("domapwrite: munmap"); 728 report_failure(204); 729 } 730 } 731 732 733 void 734 dotruncate(unsigned size) 735 { 736 int oldsize = file_size; 737 738 size -= size % truncbdy; 739 if (size > biggest) { 740 biggest = size; 741 if (!quiet && testcalls > simulatedopcount) 742 prt("truncating to largest ever: 0x%x\n", size); 743 } 744 745 log4(OP_TRUNCATE, size, (unsigned)file_size, 0); 746 747 if (size > file_size) 748 memset(good_buf + file_size, '\0', size - file_size); 749 file_size = size; 750 751 if (testcalls <= simulatedopcount) 752 return; 753 754 if ((progressinterval && testcalls % progressinterval == 0) || 755 (debug && (monitorstart == -1 || monitorend == -1 || 756 size <= monitorend))) 757 prt("%lu trunc\tfrom 0x%x to 0x%x\n", testcalls, oldsize, size); 758 if (ftruncate(fd, (off_t)size) == -1) { 759 prt("ftruncate1: %x\n", size); 760 prterr("dotruncate: ftruncate"); 761 report_failure(160); 762 } 763 } 764 765 766 void 767 writefileimage() 768 { 769 ssize_t iret; 770 771 if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) { 772 prterr("writefileimage: lseek"); 773 report_failure(171); 774 } 775 iret = write(fd, good_buf, file_size); 776 if ((off_t)iret != file_size) { 777 if (iret == -1) 778 prterr("writefileimage: write"); 779 else 780 prt("short write: 0x%x bytes instead of 0x%llx\n", 781 iret, (unsigned long long)file_size); 782 report_failure(172); 783 } 784 if (lite ? 0 : ftruncate(fd, file_size) == -1) { 785 prt("ftruncate2: %llx\n", (unsigned long long)file_size); 786 prterr("writefileimage: ftruncate"); 787 report_failure(173); 788 } 789 } 790 791 792 void 793 docloseopen(void) 794 { 795 if (testcalls <= simulatedopcount) 796 return; 797 798 if (debug) 799 prt("%lu close/open\n", testcalls); 800 if (close(fd)) { 801 prterr("docloseopen: close"); 802 report_failure(180); 803 } 804 fd = open(fname, O_RDWR, 0); 805 if (fd < 0) { 806 prterr("docloseopen: open"); 807 report_failure(181); 808 } 809 } 810 811 812 void 813 doinvl(void) 814 { 815 char *p; 816 817 if (file_size == 0) 818 return; 819 if (testcalls <= simulatedopcount) 820 return; 821 if (debug) 822 prt("%lu msync(MS_INVALIDATE)\n", testcalls); 823 824 if ((p = (char *)mmap(0, file_size, PROT_READ | PROT_WRITE, 825 MAP_FILE | MAP_SHARED, fd, 0)) == MAP_FAILED) { 826 prterr("doinvl: mmap"); 827 report_failure(205); 828 } 829 830 if (msync(p, 0, MS_SYNC | MS_INVALIDATE) != 0) { 831 prterr("doinvl: msync"); 832 report_failure(206); 833 } 834 835 if (munmap(p, file_size) != 0) { 836 prterr("doinvl: munmap"); 837 report_failure(207); 838 } 839 } 840 841 842 void 843 test(void) 844 { 845 unsigned long offset; 846 unsigned long size = maxoplen; 847 unsigned long rv = random(); 848 unsigned long op = rv % (3 + !lite + mapped_writes); 849 850 /* turn off the map read if necessary */ 851 852 if (op == 2 && !mapped_reads) 853 op = 0; 854 855 if (simulatedopcount > 0 && testcalls == simulatedopcount) 856 writefileimage(); 857 858 testcalls++; 859 860 if (closeprob) 861 closeopen = (rv >> 3) < (1 << 28) / closeprob; 862 if (invlprob) 863 invl = (rv >> 3) < (1 << 28) / invlprob; 864 865 if (debugstart > 0 && testcalls >= debugstart) 866 debug = 1; 867 868 if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0) 869 prt("%lu...\n", testcalls); 870 871 /* 872 * READ: op = 0 873 * WRITE: op = 1 874 * MAPREAD: op = 2 875 * TRUNCATE: op = 3 876 * MAPWRITE: op = 3 or 4 877 */ 878 if (lite ? 0 : op == 3 && style == 0) /* vanilla truncate? */ 879 dotruncate(random() % maxfilelen); 880 else { 881 if (randomoplen) 882 size = random() % (maxoplen+1); 883 if (lite ? 0 : op == 3) 884 dotruncate(size); 885 else { 886 offset = random(); 887 if (op == 1 || op == (lite ? 3 : 4)) { 888 offset %= maxfilelen; 889 if (offset + size > maxfilelen) 890 size = maxfilelen - offset; 891 if (op != 1) 892 domapwrite(offset, size); 893 else 894 dowrite(offset, size); 895 } else { 896 if (file_size) 897 offset %= file_size; 898 else 899 offset = 0; 900 if (offset + size > file_size) 901 size = file_size - offset; 902 if (op != 0) 903 domapread(offset, size); 904 else 905 doread(offset, size); 906 } 907 } 908 } 909 if (sizechecks && testcalls > simulatedopcount) 910 check_size(); 911 if (invl) 912 doinvl(); 913 if (closeopen) 914 docloseopen(); 915 } 916 917 918 void 919 cleanup(sig) 920 int sig; 921 { 922 if (sig) 923 prt("signal %d\n", sig); 924 prt("testcalls = %lu\n", testcalls); 925 exit(sig); 926 } 927 928 929 void 930 usage(void) 931 { 932 fprintf(stdout, "usage: %s", 933 "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\ 934 -b opnum: beginning operation number (default 1)\n\ 935 -c P: 1 in P chance of file close+open at each op (default infinity)\n\ 936 -d: debug output for all operations\n\ 937 -i P: 1 in P chance of calling msync(MS_INVALIDATE) (default infinity)\n\ 938 -l flen: the upper bound on file size (default 262144)\n\ 939 -m startop:endop: monitor (print debug output) specified byte range (default 0:infinity)\n\ 940 -n: no verifications of file size\n\ 941 -o oplen: the upper bound on operation size (default 65536)\n\ 942 -p progressinterval: debug output at specified operation interval\n\ 943 -q: quieter operation\n\ 944 -r readbdy: 4096 would make reads page aligned (default 1)\n\ 945 -s style: 1 gives smaller truncates (default 0)\n\ 946 -t truncbdy: 4096 would make truncates page aligned (default 1)\n\ 947 -w writebdy: 4096 would make writes page aligned (default 1)\n\ 948 -D startingop: debug output starting at specified operation\n\ 949 -L: fsxLite - no file creations & no file size changes\n\ 950 -N numops: total # operations to do (default infinity)\n\ 951 -O: use oplen (see -o flag) for every op (default random)\n\ 952 -P dirpath: save .fsxlog and .fsxgood files in dirpath (default ./)\n\ 953 -S seed: for random # generator (default 1) 0 gets timestamp\n\ 954 -W: mapped write operations DISabled\n\ 955 -R: mapped read operations DISabled)\n\ 956 -U: msync after mapped write operations DISabled\n\ 957 fname: this filename is REQUIRED (no default)\n"); 958 exit(90); 959 } 960 961 962 int 963 getnum(char *s, char **e) 964 { 965 int ret = -1; 966 967 *e = (char *) 0; 968 ret = strtol(s, e, 0); 969 if (*e) 970 switch (**e) { 971 case 'b': 972 case 'B': 973 ret *= 512; 974 *e = *e + 1; 975 break; 976 case 'k': 977 case 'K': 978 ret *= 1024; 979 *e = *e + 1; 980 break; 981 case 'm': 982 case 'M': 983 ret *= 1024*1024; 984 *e = *e + 1; 985 break; 986 case 'w': 987 case 'W': 988 ret *= 4; 989 *e = *e + 1; 990 break; 991 } 992 return (ret); 993 } 994 995 996 int 997 main(int argc, char **argv) 998 { 999 int i, ch; 1000 char *endp; 1001 char goodfile[1024]; 1002 char logfile[1024]; 1003 struct timespec now; 1004 1005 goodfile[0] = 0; 1006 logfile[0] = 0; 1007 1008 page_size = getpagesize(); 1009 page_mask = page_size - 1; 1010 1011 setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */ 1012 1013 while ((ch = getopt(argc, argv, 1014 "b:c:di:l:m:no:p:qr:s:t:w:D:LN:OP:RS:UW")) != -1) 1015 switch (ch) { 1016 case 'b': 1017 simulatedopcount = getnum(optarg, &endp); 1018 if (!quiet) 1019 fprintf(stdout, "Will begin at operation %ld\n", 1020 simulatedopcount); 1021 if (simulatedopcount == 0) 1022 usage(); 1023 simulatedopcount -= 1; 1024 break; 1025 case 'c': 1026 closeprob = getnum(optarg, &endp); 1027 if (!quiet) 1028 fprintf(stdout, 1029 "Chance of close/open is 1 in %d\n", 1030 closeprob); 1031 if (closeprob <= 0) 1032 usage(); 1033 break; 1034 case 'd': 1035 debug = 1; 1036 break; 1037 case 'i': 1038 invlprob = getnum(optarg, &endp); 1039 if (!quiet) 1040 fprintf(stdout, 1041 "Chance of MS_INVALIDATE is 1 in %d\n", 1042 invlprob); 1043 if (invlprob <= 0) 1044 usage(); 1045 break; 1046 case 'l': 1047 maxfilelen = getnum(optarg, &endp); 1048 if (maxfilelen <= 0) 1049 usage(); 1050 break; 1051 case 'm': 1052 monitorstart = getnum(optarg, &endp); 1053 if (monitorstart < 0) 1054 usage(); 1055 if (!endp || *endp++ != ':') 1056 usage(); 1057 monitorend = getnum(endp, &endp); 1058 if (monitorend < 0) 1059 usage(); 1060 if (monitorend == 0) 1061 monitorend = -1; /* aka infinity */ 1062 debug = 1; 1063 case 'n': 1064 sizechecks = 0; 1065 break; 1066 case 'o': 1067 maxoplen = getnum(optarg, &endp); 1068 if (maxoplen <= 0) 1069 usage(); 1070 break; 1071 case 'p': 1072 progressinterval = getnum(optarg, &endp); 1073 if (progressinterval < 0) 1074 usage(); 1075 break; 1076 case 'q': 1077 quiet = 1; 1078 break; 1079 case 'r': 1080 readbdy = getnum(optarg, &endp); 1081 if (readbdy <= 0) 1082 usage(); 1083 break; 1084 case 's': 1085 style = getnum(optarg, &endp); 1086 if (style < 0 || style > 1) 1087 usage(); 1088 break; 1089 case 't': 1090 truncbdy = getnum(optarg, &endp); 1091 if (truncbdy <= 0) 1092 usage(); 1093 break; 1094 case 'w': 1095 writebdy = getnum(optarg, &endp); 1096 if (writebdy <= 0) 1097 usage(); 1098 break; 1099 case 'D': 1100 debugstart = getnum(optarg, &endp); 1101 if (debugstart < 1) 1102 usage(); 1103 break; 1104 case 'L': 1105 lite = 1; 1106 break; 1107 case 'N': 1108 numops = getnum(optarg, &endp); 1109 if (numops < 0) 1110 usage(); 1111 break; 1112 case 'O': 1113 randomoplen = 0; 1114 break; 1115 case 'P': 1116 strncpy(goodfile, optarg, sizeof(goodfile)); 1117 strcat(goodfile, "/"); 1118 strncpy(logfile, optarg, sizeof(logfile)); 1119 strcat(logfile, "/"); 1120 break; 1121 case 'R': 1122 mapped_reads = 0; 1123 break; 1124 case 'S': 1125 seed = getnum(optarg, &endp); 1126 if (seed == 0) { 1127 if (clock_gettime(CLOCK_REALTIME, &now) != 0) 1128 err(1, "clock_gettime"); 1129 seed = now.tv_nsec % 10000; 1130 } 1131 if (!quiet) 1132 fprintf(stdout, "Seed set to %d\n", seed); 1133 if (seed < 0) 1134 usage(); 1135 break; 1136 case 'W': 1137 mapped_writes = 0; 1138 if (!quiet) 1139 fprintf(stdout, "mapped writes DISABLED\n"); 1140 break; 1141 case 'U': 1142 mapped_msync = 0; 1143 if (!quiet) 1144 fprintf(stdout, "mapped msync DISABLED\n"); 1145 break; 1146 1147 default: 1148 usage(); 1149 /* NOTREACHED */ 1150 } 1151 argc -= optind; 1152 argv += optind; 1153 if (argc != 1) 1154 usage(); 1155 fname = argv[0]; 1156 1157 signal(SIGHUP, cleanup); 1158 signal(SIGINT, cleanup); 1159 signal(SIGPIPE, cleanup); 1160 signal(SIGALRM, cleanup); 1161 signal(SIGTERM, cleanup); 1162 signal(SIGXCPU, cleanup); 1163 signal(SIGXFSZ, cleanup); 1164 signal(SIGVTALRM, cleanup); 1165 signal(SIGUSR1, cleanup); 1166 signal(SIGUSR2, cleanup); 1167 1168 initstate(seed, state, 256); 1169 setstate(state); 1170 fd = open(fname, O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC), 0666); 1171 if (fd < 0) { 1172 prterr(fname); 1173 exit(91); 1174 } 1175 strncat(goodfile, fname, 256); 1176 strcat (goodfile, ".fsxgood"); 1177 fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666); 1178 if (fsxgoodfd < 0) { 1179 prterr(goodfile); 1180 exit(92); 1181 } 1182 strncat(logfile, fname, 256); 1183 strcat (logfile, ".fsxlog"); 1184 fsxlogf = fopen(logfile, "w"); 1185 if (fsxlogf == NULL) { 1186 prterr(logfile); 1187 exit(93); 1188 } 1189 if (lite) { 1190 off_t ret; 1191 file_size = maxfilelen = lseek(fd, (off_t)0, SEEK_END); 1192 if (file_size == (off_t)-1) { 1193 prterr(fname); 1194 warn("main: lseek eof"); 1195 exit(94); 1196 } 1197 ret = lseek(fd, (off_t)0, SEEK_SET); 1198 if (ret == (off_t)-1) { 1199 prterr(fname); 1200 warn("main: lseek 0"); 1201 exit(95); 1202 } 1203 } 1204 original_buf = (char *) malloc(maxfilelen); 1205 for (i = 0; i < maxfilelen; i++) 1206 original_buf[i] = random() % 256; 1207 good_buf = (char *) malloc(maxfilelen); 1208 memset(good_buf, '\0', maxfilelen); 1209 temp_buf = (char *) malloc(maxoplen); 1210 memset(temp_buf, '\0', maxoplen); 1211 if (lite) { /* zero entire existing file */ 1212 ssize_t written; 1213 1214 written = write(fd, good_buf, (size_t)maxfilelen); 1215 if (written != maxfilelen) { 1216 if (written == -1) { 1217 prterr(fname); 1218 warn("main: error on write"); 1219 } else 1220 warn("main: short write, 0x%x bytes instead of 0x%lx\n", 1221 (unsigned)written, maxfilelen); 1222 exit(98); 1223 } 1224 } else 1225 check_trunc_hack(); 1226 1227 while (numops == -1 || numops--) 1228 test(); 1229 1230 if (close(fd)) { 1231 prterr("close"); 1232 report_failure(99); 1233 } 1234 prt("All operations completed A-OK!\n"); 1235 1236 exit(0); 1237 return 0; 1238 } 1239 1240