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: src/tools/regression/fsx/fsx.c,v 1.2 2003/04/23 23:42:23 jkh Exp $ 38 */ 39 40 #include <sys/param.h> 41 #include <sys/stat.h> 42 #include <fcntl.h> 43 #include <sys/mman.h> 44 #include <limits.h> 45 #include <signal.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <string.h> 49 #include <unistd.h> 50 #include <stdarg.h> 51 #include <errno.h> 52 #include <setjmp.h> 53 54 #define NUMPRINTCOLUMNS 32 /* # columns of data to print on each line */ 55 56 /* 57 * A log entry is an operation and a bunch of arguments. 58 */ 59 60 struct log_entry { 61 int operation; 62 int args[3]; 63 }; 64 65 #define LOGSIZE 1000 66 67 struct log_entry oplog[LOGSIZE]; /* the log */ 68 int logptr = 0; /* current position in log */ 69 int logcount = 0; /* total ops */ 70 int jmpbuf_good; 71 jmp_buf jmpbuf; 72 73 static void log4(int operation, int arg0, int arg1, int arg2); 74 static void vwarnc(int code, const char *fmt, va_list ap); 75 static void warn(const char * fmt, ...); 76 static void prt(const char *fmt, ...); 77 static void prterr(const char *prefix); 78 static void logdump(void); 79 static void save_buffer(char *buffer, off_t bufferlength, int fd); 80 static void report_failure(int status); 81 static void check_buffers(unsigned offset, unsigned size); 82 static void check_trunc_hack(void); 83 static void check_size(void); 84 static void doread(unsigned offset, unsigned size); 85 static void check_eofpage(const char *s, unsigned offset, char *p, int size); 86 static void domapread(unsigned offset, unsigned size); 87 static void gendata(char *original_buf, char *good_buf, 88 unsigned offset, unsigned size); 89 static void dowrite(unsigned offset, unsigned size); 90 static void domapwrite(unsigned offset, unsigned size); 91 static void dotruncate(unsigned size); 92 static void docloseopen(void); 93 static void test(void); 94 static void segv(int sig); 95 static void cleanup(int sig); 96 static void usage(void); 97 static int getnum(char *s, char **e); 98 99 /* 100 * Define operations 101 */ 102 103 #define OP_READ 1 104 #define OP_WRITE 2 105 #define OP_TRUNCATE 3 106 #define OP_CLOSEOPEN 4 107 #define OP_MAPREAD 5 108 #define OP_MAPWRITE 6 109 #define OP_SKIPPED 7 110 111 int page_size; 112 int page_mask; 113 114 char *original_buf; /* a pointer to the original data */ 115 char *good_buf; /* a pointer to the correct data */ 116 char *temp_buf; /* a pointer to the current data */ 117 char *fname; /* name of our test file */ 118 int fd; /* fd for our test file */ 119 120 off_t file_size = 0; 121 off_t biggest = 0; 122 char state[256]; 123 unsigned long testcalls = 0; /* calls to function "test" */ 124 125 unsigned long simulatedopcount = 0; /* -b flag */ 126 int closeprob = 0; /* -c flag */ 127 int debug = 0; /* -d flag */ 128 unsigned long debugstart = 0; /* -D flag */ 129 unsigned long maxfilelen = 256 * 1024; /* -l flag */ 130 int sizechecks = 1; /* -n flag disables them */ 131 int maxoplen = 64 * 1024; /* -o flag */ 132 int quiet = 0; /* -q flag */ 133 unsigned long progressinterval = 0; /* -p flag */ 134 int readbdy = 1; /* -r flag */ 135 int style = 0; /* -s flag */ 136 int truncbdy = 1; /* -t flag */ 137 int writebdy = 1; /* -w flag */ 138 long monitorstart = -1; /* -m flag */ 139 long monitorend = -1; /* -m flag */ 140 int lite = 0; /* -L flag */ 141 long numops = -1; /* -N flag */ 142 int randomoplen = 1; /* -O flag disables it */ 143 int seed = 1; /* -S flag */ 144 int mapped_writes = 1; /* -W flag disables */ 145 int mapped_reads = 1; /* -R flag disables it */ 146 int fsxgoodfd = 0; 147 FILE * fsxlogf = NULL; 148 int badoff = -1; 149 int closeopen = 0; 150 151 152 static 153 void 154 vwarnc(int code, const char *fmt, va_list ap) 155 { 156 fprintf(stderr, "fsx: "); 157 if (fmt != NULL) { 158 vfprintf(stderr, fmt, ap); 159 fprintf(stderr, ": "); 160 } 161 fprintf(stderr, "%s\n", strerror(code)); 162 } 163 164 static 165 void 166 warn(const char * fmt, ...) 167 { 168 va_list ap; 169 va_start(ap, fmt); 170 vwarnc(errno, fmt, ap); 171 va_end(ap); 172 } 173 174 175 static 176 void 177 prt(const char *fmt, ...) 178 { 179 va_list args; 180 181 va_start(args, fmt); 182 vfprintf(stdout, fmt, args); 183 va_end(args); 184 va_start(args, fmt); 185 if (fsxlogf) 186 vfprintf(fsxlogf, fmt, args); 187 va_end(args); 188 } 189 190 static 191 void 192 prterr(const char *prefix) 193 { 194 prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno)); 195 } 196 197 static void 198 log4(int operation, int arg0, int arg1, int arg2) 199 { 200 struct log_entry *le; 201 202 le = &oplog[logptr]; 203 le->operation = operation; 204 if (closeopen) 205 le->operation = ~ le->operation; 206 le->args[0] = arg0; 207 le->args[1] = arg1; 208 le->args[2] = arg2; 209 logptr++; 210 logcount++; 211 if (logptr >= LOGSIZE) 212 logptr = 0; 213 } 214 215 216 static 217 void 218 logdump(void) 219 { 220 int i, count, down; 221 struct log_entry *lp; 222 223 prt("LOG DUMP (%d total operations):\n", logcount); 224 if (logcount < LOGSIZE) { 225 i = 0; 226 count = logcount; 227 } else { 228 i = logptr; 229 count = LOGSIZE; 230 } 231 for ( ; count > 0; count--) { 232 int opnum; 233 234 opnum = i+1 + rounddown(logcount, LOGSIZE); 235 prt("%d(%d mod 256): ", opnum, opnum%256); 236 lp = &oplog[i]; 237 if ((closeopen = lp->operation < 0)) 238 lp->operation = ~ lp->operation; 239 240 switch (lp->operation) { 241 case OP_MAPREAD: 242 prt("MAPREAD\t0x%x thru 0x%x\t(0x%x bytes)", 243 lp->args[0], lp->args[0] + lp->args[1] - 1, 244 lp->args[1]); 245 if (badoff >= lp->args[0] && badoff < 246 lp->args[0] + lp->args[1]) 247 prt("\t***RRRR***"); 248 break; 249 case OP_MAPWRITE: 250 prt("MAPWRITE\t0x%x thru 0x%x\t(0x%x bytes)", 251 lp->args[0], lp->args[0] + lp->args[1] - 1, 252 lp->args[1]); 253 if (badoff >= lp->args[0] && badoff < 254 lp->args[0] + lp->args[1]) 255 prt("\t******WWWW"); 256 break; 257 case OP_READ: 258 prt("READ\t0x%x thru 0x%x\t(0x%x bytes)", 259 lp->args[0], lp->args[0] + lp->args[1] - 1, 260 lp->args[1]); 261 if (badoff >= lp->args[0] && 262 badoff < lp->args[0] + lp->args[1]) 263 prt("\t***RRRR***"); 264 break; 265 case OP_WRITE: 266 prt("WRITE\t0x%x thru 0x%x\t(0x%x bytes)", 267 lp->args[0], lp->args[0] + lp->args[1] - 1, 268 lp->args[1]); 269 if (lp->args[0] > lp->args[2]) 270 prt(" HOLE"); 271 else if (lp->args[0] + lp->args[1] > lp->args[2]) 272 prt(" EXTEND"); 273 if ((badoff >= lp->args[0] || badoff >=lp->args[2]) && 274 badoff < lp->args[0] + lp->args[1]) 275 prt("\t***WWWW"); 276 break; 277 case OP_TRUNCATE: 278 down = lp->args[0] < lp->args[1]; 279 prt("TRUNCATE %s\tfrom 0x%x to 0x%x", 280 down ? "DOWN" : "UP", lp->args[1], lp->args[0]); 281 if (badoff >= lp->args[!down] && 282 badoff < lp->args[!!down]) 283 prt("\t******WWWW"); 284 break; 285 case OP_SKIPPED: 286 prt("SKIPPED (no operation)"); 287 break; 288 default: 289 prt("BOGUS LOG ENTRY (operation code = %d)!", 290 lp->operation); 291 } 292 if (closeopen) 293 prt("\n\t\tCLOSE/OPEN"); 294 prt("\n"); 295 i++; 296 if (i == LOGSIZE) 297 i = 0; 298 } 299 } 300 301 static 302 void 303 save_buffer(char *buffer, off_t bufferlength, int xfd) 304 { 305 off_t ret; 306 ssize_t byteswritten; 307 308 if (xfd <= 0 || bufferlength == 0) 309 return; 310 311 if (bufferlength > SSIZE_MAX) { 312 prt("fsx flaw: overflow in save_buffer\n"); 313 exit(67); 314 } 315 if (lite) { 316 off_t size_by_seek = lseek(xfd, (off_t)0, SEEK_END); 317 if (size_by_seek == (off_t)-1) 318 prterr("save_buffer: lseek eof"); 319 else if (bufferlength > size_by_seek) { 320 warn("save_buffer: .fsxgood file too short... " 321 "will save 0x%jx bytes instead of 0x%llx\n", 322 (intmax_t)size_by_seek, 323 (intmax_t)bufferlength); 324 bufferlength = size_by_seek; 325 } 326 } 327 328 ret = lseek(xfd, (off_t)0, SEEK_SET); 329 if (ret == (off_t)-1) 330 prterr("save_buffer: lseek 0"); 331 332 byteswritten = write(xfd, buffer, (size_t)bufferlength); 333 if (byteswritten != bufferlength) { 334 if (byteswritten == -1) 335 prterr("save_buffer write"); 336 else 337 warn("save_buffer: short write, " 338 "0x%x bytes instead of 0x%jx\n", 339 (unsigned)byteswritten, 340 (intmax_t)bufferlength); 341 } 342 } 343 344 345 static 346 void 347 report_failure(int status) 348 { 349 logdump(); 350 351 if (fsxgoodfd) { 352 if (good_buf) { 353 save_buffer(good_buf, file_size, fsxgoodfd); 354 prt("Correct content saved for comparison\n"); 355 prt("(maybe hexdump \"%s\" vs \"%s.fsxgood\")\n", 356 fname, fname); 357 } 358 close(fsxgoodfd); 359 } 360 exit(status); 361 } 362 363 364 #define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \ 365 *(((unsigned char *)(cp)) + 1))) 366 367 static 368 void 369 check_buffers(unsigned offset, unsigned size) 370 { 371 unsigned char c, t; 372 unsigned i = 0; 373 unsigned n = 0; 374 unsigned op = 0; 375 unsigned bad = 0; 376 377 if (memcmp(good_buf + offset, temp_buf, size) != 0) { 378 prt("READ BAD DATA: offset = 0x%x, size = 0x%x\n", 379 offset, size); 380 prt("OFFSET\t\tGOOD\tBAD\tRANGE\n"); 381 while (size > 0) { 382 c = good_buf[offset]; 383 t = temp_buf[i]; 384 if (c != t) { 385 if (n == 0) { 386 bad = short_at(&temp_buf[i]); 387 prt("0x%08x\t0x%04x\t0x%04x", offset, 388 short_at(&good_buf[offset]), bad); 389 op = temp_buf[offset & 1 ? i+1 : i]; 390 } 391 n++; 392 badoff = offset; 393 } 394 offset++; 395 i++; 396 size--; 397 } 398 if (n) { 399 prt("\t0x%5x\n", n); 400 if (bad) 401 prt("operation# (mod 256) for the bad data may be %u\n", ((unsigned)op & 0xff)); 402 else 403 prt("operation# (mod 256) for the bad data unknown, check HOLE and EXTEND ops\n"); 404 } else 405 prt("????????????????\n"); 406 report_failure(110); 407 } 408 } 409 410 static 411 void 412 check_size(void) 413 { 414 struct stat statbuf; 415 off_t size_by_seek; 416 417 if (fstat(fd, &statbuf)) { 418 prterr("check_size: fstat"); 419 statbuf.st_size = -1; 420 } 421 size_by_seek = lseek(fd, (off_t)0, SEEK_END); 422 if (file_size != statbuf.st_size || file_size != size_by_seek) { 423 prt("Size error: expected 0x%llx stat 0x%llx seek 0x%llx\n", 424 (unsigned long long)file_size, 425 (unsigned long long)statbuf.st_size, 426 (unsigned long long)size_by_seek); 427 report_failure(120); 428 } 429 } 430 431 static 432 void 433 check_trunc_hack(void) 434 { 435 struct stat statbuf; 436 437 ftruncate(fd, (off_t)0); 438 ftruncate(fd, (off_t)100000); 439 fstat(fd, &statbuf); 440 if (statbuf.st_size != (off_t)100000) { 441 prt("no extend on truncate! not posix!\n"); 442 exit(130); 443 } 444 ftruncate(fd, (off_t)0); 445 } 446 447 static 448 void 449 doread(unsigned offset, unsigned size) 450 { 451 off_t ret; 452 unsigned iret; 453 454 offset -= offset % readbdy; 455 if (size == 0) { 456 if (!quiet && testcalls > simulatedopcount) 457 prt("skipping zero size read\n"); 458 log4(OP_SKIPPED, OP_READ, offset, size); 459 return; 460 } 461 if (size + offset > file_size) { 462 if (!quiet && testcalls > simulatedopcount) 463 prt("skipping seek/read past end of file\n"); 464 log4(OP_SKIPPED, OP_READ, offset, size); 465 return; 466 } 467 468 log4(OP_READ, offset, size, 0); 469 470 if (testcalls <= simulatedopcount) 471 return; 472 473 if (!quiet && ((progressinterval && 474 testcalls % progressinterval == 0) || 475 (debug && 476 (monitorstart == -1 || 477 (offset + size > monitorstart && 478 (monitorend == -1 || offset <= monitorend)))))) 479 prt("%lu read\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 480 offset, offset + size - 1, size); 481 ret = lseek(fd, (off_t)offset, SEEK_SET); 482 if (ret == (off_t)-1) { 483 prterr("doread: lseek"); 484 report_failure(140); 485 } 486 iret = read(fd, temp_buf, size); 487 if (iret != size) { 488 if (iret == -1) 489 prterr("doread: read"); 490 else 491 prt("short read: 0x%x bytes instead of 0x%x\n", 492 iret, size); 493 report_failure(141); 494 } 495 check_buffers(offset, size); 496 } 497 498 static 499 void 500 check_eofpage(const char *s, unsigned offset, char *p, int size) 501 { 502 intptr_t last_page, should_be_zero; 503 504 if (offset + size <= (file_size & ~page_mask)) 505 return; 506 /* 507 * we landed in the last page of the file 508 * test to make sure the VM system provided 0's 509 * beyond the true end of the file mapping 510 * (as required by mmap def in 1996 posix 1003.1) 511 */ 512 last_page = ((intptr_t)p + (offset & page_mask) + size) & ~(intptr_t)page_mask; 513 514 for (should_be_zero = last_page + (file_size & page_mask); 515 should_be_zero < last_page + page_size; 516 should_be_zero++) { 517 if (*(char *)should_be_zero) { 518 prt("Mapped %s: non-zero data past EOF (0x%llx) page offset 0x%x is 0x%04x\n", 519 s, file_size - 1, should_be_zero & page_mask, 520 *(char *)(should_be_zero)); 521 report_failure(205); 522 } 523 } 524 } 525 526 static 527 void 528 domapread(unsigned offset, unsigned size) 529 { 530 unsigned pg_offset; 531 unsigned map_size; 532 char *p; 533 534 offset -= offset % readbdy; 535 if (size == 0) { 536 if (!quiet && testcalls > simulatedopcount) 537 prt("skipping zero size read\n"); 538 log4(OP_SKIPPED, OP_MAPREAD, offset, size); 539 return; 540 } 541 if (size + offset > file_size) { 542 if (!quiet && testcalls > simulatedopcount) 543 prt("skipping seek/read past end of file\n"); 544 log4(OP_SKIPPED, OP_MAPREAD, offset, size); 545 return; 546 } 547 548 log4(OP_MAPREAD, offset, size, 0); 549 550 if (testcalls <= simulatedopcount) 551 return; 552 553 if (!quiet && ((progressinterval && 554 testcalls % progressinterval == 0) || 555 (debug && 556 (monitorstart == -1 || 557 (offset + size > monitorstart && 558 (monitorend == -1 || offset <= monitorend)))))) 559 prt("%lu mapread\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 560 offset, offset + size - 1, size); 561 562 pg_offset = offset & page_mask; 563 map_size = pg_offset + size; 564 565 if ((p = (char *)mmap(0, map_size, PROT_READ, MAP_FILE | MAP_SHARED, fd, 566 (off_t)(offset - pg_offset))) == (char *)-1) { 567 prterr("domapread: mmap"); 568 report_failure(190); 569 } 570 if (setjmp(jmpbuf) == 0) { 571 jmpbuf_good = 1; 572 memcpy(temp_buf, p + pg_offset, size); 573 check_eofpage("Read", offset, p, size); 574 jmpbuf_good = 0; 575 } else { 576 report_failure(1901); 577 } 578 579 if (munmap(p, map_size) != 0) { 580 prterr("domapread: munmap"); 581 report_failure(191); 582 } 583 584 check_buffers(offset, size); 585 } 586 587 static 588 void 589 gendata(char *obuf, char *gbuf, unsigned offset, unsigned size) 590 { 591 while (size--) { 592 gbuf[offset] = testcalls % 256; 593 if (offset % 2) 594 gbuf[offset] += obuf[offset]; 595 offset++; 596 } 597 } 598 599 static 600 void 601 dowrite(unsigned offset, unsigned size) 602 { 603 off_t ret; 604 unsigned iret; 605 606 offset -= offset % writebdy; 607 if (size == 0) { 608 if (!quiet && testcalls > simulatedopcount) 609 prt("skipping zero size write\n"); 610 log4(OP_SKIPPED, OP_WRITE, offset, size); 611 return; 612 } 613 614 log4(OP_WRITE, offset, size, file_size); 615 616 gendata(original_buf, good_buf, offset, size); 617 if (file_size < offset + size) { 618 if (file_size < offset) 619 memset(good_buf + file_size, '\0', offset - file_size); 620 file_size = offset + size; 621 if (lite) { 622 warn("Lite file size bug in fsx!"); 623 report_failure(149); 624 } 625 } 626 627 if (testcalls <= simulatedopcount) 628 return; 629 630 if (!quiet && ((progressinterval && 631 testcalls % progressinterval == 0) || 632 (debug && 633 (monitorstart == -1 || 634 (offset + size > monitorstart && 635 (monitorend == -1 || offset <= monitorend)))))) 636 prt("%lu write\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 637 offset, offset + size - 1, size); 638 ret = lseek(fd, (off_t)offset, SEEK_SET); 639 if (ret == (off_t)-1) { 640 prterr("dowrite: lseek"); 641 report_failure(150); 642 } 643 iret = write(fd, good_buf + offset, size); 644 if (iret != size) { 645 if (iret == -1) 646 prterr("dowrite: write"); 647 else 648 prt("short write: 0x%x bytes instead of 0x%x\n", 649 iret, size); 650 report_failure(151); 651 } 652 } 653 654 static 655 void 656 domapwrite(unsigned offset, unsigned size) 657 { 658 unsigned pg_offset; 659 unsigned map_size; 660 off_t cur_filesize; 661 char *p; 662 663 offset -= offset % writebdy; 664 if (size == 0) { 665 if (!quiet && testcalls > simulatedopcount) 666 prt("skipping zero size write\n"); 667 log4(OP_SKIPPED, OP_MAPWRITE, offset, size); 668 return; 669 } 670 cur_filesize = file_size; 671 672 log4(OP_MAPWRITE, offset, size, 0); 673 674 gendata(original_buf, good_buf, offset, size); 675 if (file_size < offset + size) { 676 if (file_size < offset) 677 memset(good_buf + file_size, '\0', offset - file_size); 678 file_size = offset + size; 679 if (lite) { 680 warn("Lite file size bug in fsx!"); 681 report_failure(200); 682 } 683 } 684 685 if (testcalls <= simulatedopcount) 686 return; 687 688 if (!quiet && ((progressinterval && 689 testcalls % progressinterval == 0) || 690 (debug && 691 (monitorstart == -1 || 692 (offset + size > monitorstart && 693 (monitorend == -1 || offset <= monitorend)))))) 694 prt("%lu mapwrite\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls, 695 offset, offset + size - 1, size); 696 697 if (file_size > cur_filesize) { 698 if (ftruncate(fd, file_size) == -1) { 699 prterr("domapwrite: ftruncate"); 700 exit(201); 701 } 702 } 703 pg_offset = offset & page_mask; 704 map_size = pg_offset + size; 705 706 if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE, 707 MAP_FILE | MAP_SHARED, fd, 708 (off_t)(offset - pg_offset))) == (char *)-1) { 709 prterr("domapwrite: mmap"); 710 report_failure(202); 711 } 712 if (setjmp(jmpbuf) == 0) { 713 jmpbuf_good = 1; 714 memcpy(p + pg_offset, good_buf + offset, size); 715 if (msync(p, map_size, 0) != 0) { 716 prterr("domapwrite: msync"); 717 report_failure(203); 718 } 719 check_eofpage("Write", offset, p, size); 720 jmpbuf_good = 0; 721 } else { 722 report_failure(2021); 723 } 724 725 if (munmap(p, map_size) != 0) { 726 prterr("domapwrite: munmap"); 727 report_failure(204); 728 } 729 } 730 731 static 732 void 733 dotruncate(unsigned size) 734 { 735 int oldsize = file_size; 736 737 size -= size % truncbdy; 738 if (size > biggest) { 739 biggest = size; 740 if (!quiet && testcalls > simulatedopcount) 741 prt("truncating to largest ever: 0x%x\n", size); 742 } 743 744 log4(OP_TRUNCATE, size, (unsigned)file_size, 0); 745 746 if (size > file_size) 747 memset(good_buf + file_size, '\0', size - file_size); 748 file_size = size; 749 750 if (testcalls <= simulatedopcount) 751 return; 752 753 if ((progressinterval && testcalls % progressinterval == 0) || 754 (debug && (monitorstart == -1 || monitorend == -1 || 755 size <= monitorend))) 756 prt("%lu trunc\tfrom 0x%x to 0x%x\n", testcalls, oldsize, size); 757 if (ftruncate(fd, (off_t)size) == -1) { 758 prt("ftruncate1: %x\n", size); 759 prterr("dotruncate: ftruncate"); 760 report_failure(160); 761 } 762 } 763 764 765 void 766 writefileimage() 767 { 768 ssize_t iret; 769 770 if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) { 771 prterr("writefileimage: lseek"); 772 report_failure(171); 773 } 774 iret = write(fd, good_buf, file_size); 775 if ((off_t)iret != file_size) { 776 if (iret == -1) 777 prterr("writefileimage: write"); 778 else 779 prt("short write: 0x%x bytes instead of 0x%jx\n", 780 iret, (intmax_t)file_size); 781 report_failure(172); 782 } 783 if (lite ? 0 : ftruncate(fd, file_size) == -1) { 784 prt("ftruncate2: %jx\n", (intmax_t)file_size); 785 prterr("writefileimage: ftruncate"); 786 report_failure(173); 787 } 788 } 789 790 static 791 void 792 docloseopen(void) 793 { 794 if (testcalls <= simulatedopcount) 795 return; 796 797 if (debug) 798 prt("%lu close/open\n", testcalls); 799 if (close(fd)) { 800 prterr("docloseopen: close"); 801 report_failure(180); 802 } 803 fd = open(fname, O_RDWR, 0); 804 if (fd < 0) { 805 prterr("docloseopen: open"); 806 report_failure(181); 807 } 808 } 809 810 static 811 void 812 test(void) 813 { 814 unsigned long offset; 815 unsigned long size = maxoplen; 816 unsigned long rv = random(); 817 unsigned long op = rv % (3 + !lite + mapped_writes); 818 819 /* turn off the map read if necessary */ 820 821 if (op == 2 && !mapped_reads) 822 op = 0; 823 824 if (simulatedopcount > 0 && testcalls == simulatedopcount) 825 writefileimage(); 826 827 testcalls++; 828 829 if (closeprob) 830 closeopen = (rv >> 3) < (1 << 28) / closeprob; 831 832 if (debugstart > 0 && testcalls >= debugstart) 833 debug = 1; 834 835 if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0) 836 prt("%lu...\n", testcalls); 837 838 /* 839 * READ: op = 0 840 * WRITE: op = 1 841 * MAPREAD: op = 2 842 * TRUNCATE: op = 3 843 * MAPWRITE: op = 3 or 4 844 */ 845 if (lite ? 0 : op == 3 && style == 0) /* vanilla truncate? */ 846 dotruncate(random() % maxfilelen); 847 else { 848 if (randomoplen) 849 size = random() % (maxoplen+1); 850 if (lite ? 0 : op == 3) 851 dotruncate(size); 852 else { 853 offset = random(); 854 if (op == 1 || op == (lite ? 3 : 4)) { 855 offset %= maxfilelen; 856 if (offset + size > maxfilelen) 857 size = maxfilelen - offset; 858 if (op != 1) 859 domapwrite(offset, size); 860 else 861 dowrite(offset, size); 862 } else { 863 if (file_size) 864 offset %= file_size; 865 else 866 offset = 0; 867 if (offset + size > file_size) 868 size = file_size - offset; 869 if (op != 0) 870 domapread(offset, size); 871 else 872 doread(offset, size); 873 } 874 } 875 } 876 if (sizechecks && testcalls > simulatedopcount) 877 check_size(); 878 if (closeopen) 879 docloseopen(); 880 } 881 882 static 883 void 884 segv(int sig) 885 { 886 if (jmpbuf_good) { 887 jmpbuf_good = 0; 888 longjmp(jmpbuf, 1); 889 } 890 report_failure(9999); 891 } 892 893 static 894 void 895 cleanup(int sig) 896 { 897 if (sig) 898 prt("signal %d\n", sig); 899 prt("testcalls = %lu\n", testcalls); 900 exit(sig); 901 } 902 903 static 904 void 905 usage(void) 906 { 907 fprintf(stdout, "usage: %s", 908 "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\ 909 -b opnum: beginning operation number (default 1)\n\ 910 -c P: 1 in P chance of file close+open at each op (default infinity)\n\ 911 -d: debug output for all operations\n\ 912 -l flen: the upper bound on file size (default 262144)\n\ 913 -m startop:endop: monitor (print debug output) specified byte range (default 0:infinity)\n\ 914 -n: no verifications of file size\n\ 915 -o oplen: the upper bound on operation size (default 65536)\n\ 916 -p progressinterval: debug output at specified operation interval\n\ 917 -q: quieter operation\n\ 918 -r readbdy: 4096 would make reads page aligned (default 1)\n\ 919 -s style: 1 gives smaller truncates (default 0)\n\ 920 -t truncbdy: 4096 would make truncates page aligned (default 1)\n\ 921 -w writebdy: 4096 would make writes page aligned (default 1)\n\ 922 -D startingop: debug output starting at specified operation\n\ 923 -L: fsxLite - no file creations & no file size changes\n\ 924 -N numops: total # operations to do (default infinity)\n\ 925 -O: use oplen (see -o flag) for every op (default random)\n\ 926 -P dirpath: save .fsxlog and .fsxgood files in dirpath (default ./)\n\ 927 -S seed: for random # generator (default 1) 0 gets timestamp\n\ 928 -W: mapped write operations DISabled\n\ 929 -R: mapped read operations DISabled)\n\ 930 fname: this filename is REQUIRED (no default)\n"); 931 exit(90); 932 } 933 934 static 935 int 936 getnum(char *s, char **e) 937 { 938 int ret = -1; 939 940 *e = NULL; 941 ret = strtol(s, e, 0); 942 if (*e) 943 switch (**e) { 944 case 'b': 945 case 'B': 946 ret *= 512; 947 *e = *e + 1; 948 break; 949 case 'k': 950 case 'K': 951 ret *= 1024; 952 *e = *e + 1; 953 break; 954 case 'm': 955 case 'M': 956 ret *= 1024*1024; 957 *e = *e + 1; 958 break; 959 case 'w': 960 case 'W': 961 ret *= 4; 962 *e = *e + 1; 963 break; 964 } 965 return (ret); 966 } 967 968 969 int 970 main(int argc, char **argv) 971 { 972 int i, ch; 973 char *endp; 974 char goodfile[1024]; 975 char logfile[1024]; 976 977 goodfile[0] = 0; 978 logfile[0] = 0; 979 980 page_size = getpagesize(); 981 page_mask = page_size - 1; 982 983 setvbuf(stdout, NULL, _IOLBF, 0); /* line buffered stdout */ 984 985 while ((ch = getopt(argc, argv, "b:c:dl:m:no:p:qr:s:t:w:D:LN:OP:RS:W")) 986 != EOF) 987 switch (ch) { 988 case 'b': 989 simulatedopcount = getnum(optarg, &endp); 990 if (!quiet) 991 fprintf(stdout, "Will begin at operation %ld\n", 992 simulatedopcount); 993 if (simulatedopcount == 0) 994 usage(); 995 simulatedopcount -= 1; 996 break; 997 case 'c': 998 closeprob = getnum(optarg, &endp); 999 if (!quiet) 1000 fprintf(stdout, 1001 "Chance of close/open is 1 in %d\n", 1002 closeprob); 1003 if (closeprob <= 0) 1004 usage(); 1005 break; 1006 case 'd': 1007 debug = 1; 1008 break; 1009 case 'l': 1010 maxfilelen = getnum(optarg, &endp); 1011 if (maxfilelen <= 0) 1012 usage(); 1013 break; 1014 case 'm': 1015 monitorstart = getnum(optarg, &endp); 1016 if (monitorstart < 0) 1017 usage(); 1018 if (!endp || *endp++ != ':') 1019 usage(); 1020 monitorend = getnum(endp, &endp); 1021 if (monitorend < 0) 1022 usage(); 1023 if (monitorend == 0) 1024 monitorend = -1; /* aka infinity */ 1025 debug = 1; 1026 case 'n': 1027 sizechecks = 0; 1028 break; 1029 case 'o': 1030 maxoplen = getnum(optarg, &endp); 1031 if (maxoplen <= 0) 1032 usage(); 1033 break; 1034 case 'p': 1035 progressinterval = getnum(optarg, &endp); 1036 if ((int)progressinterval < 0) 1037 usage(); 1038 break; 1039 case 'q': 1040 quiet = 1; 1041 break; 1042 case 'r': 1043 readbdy = getnum(optarg, &endp); 1044 if (readbdy <= 0) 1045 usage(); 1046 break; 1047 case 's': 1048 style = getnum(optarg, &endp); 1049 if (style < 0 || style > 1) 1050 usage(); 1051 break; 1052 case 't': 1053 truncbdy = getnum(optarg, &endp); 1054 if (truncbdy <= 0) 1055 usage(); 1056 break; 1057 case 'w': 1058 writebdy = getnum(optarg, &endp); 1059 if (writebdy <= 0) 1060 usage(); 1061 break; 1062 case 'D': 1063 debugstart = getnum(optarg, &endp); 1064 if (debugstart < 1) 1065 usage(); 1066 break; 1067 case 'L': 1068 lite = 1; 1069 break; 1070 case 'N': 1071 numops = getnum(optarg, &endp); 1072 if (numops < 0) 1073 usage(); 1074 break; 1075 case 'O': 1076 randomoplen = 0; 1077 break; 1078 case 'P': 1079 strncpy(goodfile, optarg, sizeof(goodfile)); 1080 strcat(goodfile, "/"); 1081 strncpy(logfile, optarg, sizeof(logfile)); 1082 strcat(logfile, "/"); 1083 break; 1084 case 'R': 1085 mapped_reads = 0; 1086 break; 1087 case 'S': 1088 seed = getnum(optarg, &endp); 1089 if (seed == 0) 1090 seed = time(0) % 10000; 1091 if (!quiet) 1092 fprintf(stdout, "Seed set to %d\n", seed); 1093 if (seed < 0) 1094 usage(); 1095 break; 1096 case 'W': 1097 mapped_writes = 0; 1098 if (!quiet) 1099 fprintf(stdout, "mapped writes DISABLED\n"); 1100 break; 1101 1102 default: 1103 usage(); 1104 /* NOTREACHED */ 1105 } 1106 argc -= optind; 1107 argv += optind; 1108 if (argc != 1) 1109 usage(); 1110 fname = argv[0]; 1111 1112 signal(SIGHUP, cleanup); 1113 signal(SIGINT, cleanup); 1114 signal(SIGPIPE, cleanup); 1115 signal(SIGALRM, cleanup); 1116 signal(SIGTERM, cleanup); 1117 signal(SIGXCPU, cleanup); 1118 signal(SIGXFSZ, cleanup); 1119 signal(SIGVTALRM, cleanup); 1120 signal(SIGUSR1, cleanup); 1121 signal(SIGUSR2, cleanup); 1122 signal(SIGSEGV, segv); 1123 1124 initstate(seed, state, 256); 1125 setstate(state); 1126 fd = open(fname, O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC), 0666); 1127 if (fd < 0) { 1128 prterr(fname); 1129 exit(91); 1130 } 1131 strncat(goodfile, fname, 256); 1132 strcat (goodfile, ".fsxgood"); 1133 fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666); 1134 if (fsxgoodfd < 0) { 1135 prterr(goodfile); 1136 exit(92); 1137 } 1138 strncat(logfile, fname, 256); 1139 strcat (logfile, ".fsxlog"); 1140 fsxlogf = fopen(logfile, "w"); 1141 if (fsxlogf == NULL) { 1142 prterr(logfile); 1143 exit(93); 1144 } 1145 if (lite) { 1146 off_t ret; 1147 file_size = maxfilelen = lseek(fd, (off_t)0, SEEK_END); 1148 if (file_size == (off_t)-1) { 1149 prterr(fname); 1150 warn("main: lseek eof"); 1151 exit(94); 1152 } 1153 ret = lseek(fd, (off_t)0, SEEK_SET); 1154 if (ret == (off_t)-1) { 1155 prterr(fname); 1156 warn("main: lseek 0"); 1157 exit(95); 1158 } 1159 } 1160 original_buf = (char *) malloc(maxfilelen); 1161 for (i = 0; i < maxfilelen; i++) 1162 original_buf[i] = random() % 256; 1163 good_buf = (char *) malloc(maxfilelen); 1164 memset(good_buf, '\0', maxfilelen); 1165 temp_buf = (char *) malloc(maxoplen); 1166 memset(temp_buf, '\0', maxoplen); 1167 if (lite) { /* zero entire existing file */ 1168 ssize_t written; 1169 1170 written = write(fd, good_buf, (size_t)maxfilelen); 1171 if (written != maxfilelen) { 1172 if (written == -1) { 1173 prterr(fname); 1174 warn("main: error on write"); 1175 } else 1176 warn("main: short write, 0x%x bytes instead of 0x%x\n", 1177 (unsigned)written, maxfilelen); 1178 exit(98); 1179 } 1180 } else 1181 check_trunc_hack(); 1182 1183 while (numops == -1 || numops--) 1184 test(); 1185 1186 if (close(fd)) { 1187 prterr("close"); 1188 report_failure(99); 1189 } 1190 prt("All operations completed A-OK!\n"); 1191 1192 exit(0); 1193 return 0; 1194 } 1195 1196