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