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Ignore machine-check MSRs
[freebsd-src/fkvm-freebsd.git] / tools / regression / fsx / fsx.c
blobcee7d9008b99f65b9bf3b63bacbf1041515c56da
1 /*
2 * Copyright (c) 1998-2001 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * The contents of this file constitute Original Code as defined in and
7 * are subject to the Apple Public Source License Version 2.0 (the
8 * "License"). You may not use this file except in compliance with the
9 * License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this file.
11 *
12 * This Original Code and all software distributed under the License are
13 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17 * License for the specific language governing rights and limitations
18 * under the License.
19 *
20 * @APPLE_LICENSE_HEADER_END@
21 *
22 * File: fsx.c
23 * Author: Avadis Tevanian, Jr.
24 *
25 * File system exerciser.
26 *
27 * Rewrite and enhancements 1998-2001 Conrad Minshall -- conrad@mac.com
28 *
29 * Various features from Joe Sokol, Pat Dirks, and Clark Warner.
30 *
31 * Small changes to work under Linux -- davej@suse.de
32 *
33 * Sundry porting patches from Guy Harris 12/2001
34 *
35 * Checks for mmap last-page zero fill.
36 *
37 * Updated license to APSL 2.0, 2004/7/27 - Jordan Hubbard
38 *
39 * $FreeBSD$
40 *
41 */
42
43 #include <sys/types.h>
44 #include <sys/stat.h>
45 #ifdef _UWIN
46 # include <sys/param.h>
47 # include <limits.h>
48 # include <time.h>
49 # include <strings.h>
50 #endif
51 #include <fcntl.h>
52 #include <sys/mman.h>
53 #ifndef MAP_FILE
54 # define MAP_FILE 0
55 #endif
56 #include <limits.h>
57 #include <signal.h>
58 #include <stdio.h>
59 #include <stdlib.h>
60 #include <string.h>
61 #include <unistd.h>
62 #include <stdarg.h>
63 #include <errno.h>
64
65 #define NUMPRINTCOLUMNS 32 /* # columns of data to print on each line */
66
67 /*
68 * A log entry is an operation and a bunch of arguments.
69 */
70
71 struct log_entry {
72 int operation;
73 int args[3];
74 };
75
76 #define LOGSIZE 1000
77
78 struct log_entry oplog[LOGSIZE]; /* the log */
79 int logptr = 0; /* current position in log */
80 int logcount = 0; /* total ops */
81
82 /*
83 * Define operations
84 */
85
86 #define OP_READ 1
87 #define OP_WRITE 2
88 #define OP_TRUNCATE 3
89 #define OP_CLOSEOPEN 4
90 #define OP_MAPREAD 5
91 #define OP_MAPWRITE 6
92 #define OP_SKIPPED 7
93
94 int page_size;
95 int page_mask;
96
97 char *original_buf; /* a pointer to the original data */
98 char *good_buf; /* a pointer to the correct data */
99 char *temp_buf; /* a pointer to the current data */
100 char *fname; /* name of our test file */
101 int fd; /* fd for our test file */
102
103 off_t file_size = 0;
104 off_t biggest = 0;
105 char state[256];
106 unsigned long testcalls = 0; /* calls to function "test" */
107
108 unsigned long simulatedopcount = 0; /* -b flag */
109 int closeprob = 0; /* -c flag */
110 int debug = 0; /* -d flag */
111 unsigned long debugstart = 0; /* -D flag */
112 unsigned long maxfilelen = 256 * 1024; /* -l flag */
113 int sizechecks = 1; /* -n flag disables them */
114 int maxoplen = 64 * 1024; /* -o flag */
115 int quiet = 0; /* -q flag */
116 unsigned long progressinterval = 0; /* -p flag */
117 int readbdy = 1; /* -r flag */
118 int style = 0; /* -s flag */
119 int truncbdy = 1; /* -t flag */
120 int writebdy = 1; /* -w flag */
121 long monitorstart = -1; /* -m flag */
122 long monitorend = -1; /* -m flag */
123 int lite = 0; /* -L flag */
124 long numops = -1; /* -N flag */
125 int randomoplen = 1; /* -O flag disables it */
126 int seed = 1; /* -S flag */
127 int mapped_writes = 1; /* -W flag disables */
128 int mapped_reads = 1; /* -R flag disables it */
129 int fsxgoodfd = 0;
130 FILE * fsxlogf = NULL;
131 int badoff = -1;
132 int closeopen = 0;
133
134
135 void
136 vwarnc(code, fmt, ap)
137 int code;
138 const char *fmt;
139 va_list ap;
140 {
141 fprintf(stderr, "fsx: ");
142 if (fmt != NULL) {
143 vfprintf(stderr, fmt, ap);
144 fprintf(stderr, ": ");
145 }
146 fprintf(stderr, "%s\n", strerror(code));
147 }
148
149
150 void
151 warn(const char * fmt, ...)
152 {
153 va_list ap;
154 va_start(ap, fmt);
155 vwarnc(errno, fmt, ap);
156 va_end(ap);
157 }
158
159
160 void
161 prt(char *fmt, ...)
162 {
163 va_list args;
164
165 va_start(args, fmt);
166 vfprintf(stdout, fmt, args);
167 va_end(args);
168
169 if (fsxlogf) {
170 va_start(args, fmt);
171 vfprintf(fsxlogf, fmt, args);
172 va_end(args);
173 }
174 }
175
176 void
177 prterr(char *prefix)
178 {
179 prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno));
180 }
181
182
183 void
184 log4(int operation, int arg0, int arg1, int arg2)
185 {
186 struct log_entry *le;
187
188 le = &oplog[logptr];
189 le->operation = operation;
190 if (closeopen)
191 le->operation = ~ le->operation;
192 le->args[0] = arg0;
193 le->args[1] = arg1;
194 le->args[2] = arg2;
195 logptr++;
196 logcount++;
197 if (logptr >= LOGSIZE)
198 logptr = 0;
199 }
200
201
202 void
203 logdump(void)
204 {
205 int i, count, down;
206 struct log_entry *lp;
207
208 prt("LOG DUMP (%d total operations):\n", logcount);
209 if (logcount < LOGSIZE) {
210 i = 0;
211 count = logcount;
212 } else {
213 i = logptr;
214 count = LOGSIZE;
215 }
216 for ( ; count > 0; count--) {
217 int opnum;
218
219 opnum = i+1 + (logcount/LOGSIZE)*LOGSIZE;
220 prt("%d(%d mod 256): ", opnum, opnum%256);
221 lp = &oplog[i];
222 if ((closeopen = lp->operation < 0))
223 lp->operation = ~ lp->operation;
224
225 switch (lp->operation) {
226 case OP_MAPREAD:
227 prt("MAPREAD\t0x%x thru 0x%x\t(0x%x bytes)",
228 lp->args[0], lp->args[0] + lp->args[1] - 1,
229 lp->args[1]);
230 if (badoff >= lp->args[0] && badoff <
231 lp->args[0] + lp->args[1])
232 prt("\t***RRRR***");
233 break;
234 case OP_MAPWRITE:
235 prt("MAPWRITE 0x%x thru 0x%x\t(0x%x bytes)",
236 lp->args[0], lp->args[0] + lp->args[1] - 1,
237 lp->args[1]);
238 if (badoff >= lp->args[0] && badoff <
239 lp->args[0] + lp->args[1])
240 prt("\t******WWWW");
241 break;
242 case OP_READ:
243 prt("READ\t0x%x thru 0x%x\t(0x%x bytes)",
244 lp->args[0], lp->args[0] + lp->args[1] - 1,
245 lp->args[1]);
246 if (badoff >= lp->args[0] &&
247 badoff < lp->args[0] + lp->args[1])
248 prt("\t***RRRR***");
249 break;
250 case OP_WRITE:
251 prt("WRITE\t0x%x thru 0x%x\t(0x%x bytes)",
252 lp->args[0], lp->args[0] + lp->args[1] - 1,
253 lp->args[1]);
254 if (lp->args[0] > lp->args[2])
255 prt(" HOLE");
256 else if (lp->args[0] + lp->args[1] > lp->args[2])
257 prt(" EXTEND");
258 if ((badoff >= lp->args[0] || badoff >=lp->args[2]) &&
259 badoff < lp->args[0] + lp->args[1])
260 prt("\t***WWWW");
261 break;
262 case OP_TRUNCATE:
263 down = lp->args[0] < lp->args[1];
264 prt("TRUNCATE %s\tfrom 0x%x to 0x%x",
265 down ? "DOWN" : "UP", lp->args[1], lp->args[0]);
266 if (badoff >= lp->args[!down] &&
267 badoff < lp->args[!!down])
268 prt("\t******WWWW");
269 break;
270 case OP_SKIPPED:
271 prt("SKIPPED (no operation)");
272 break;
273 default:
274 prt("BOGUS LOG ENTRY (operation code = %d)!",
275 lp->operation);
276 }
277 if (closeopen)
278 prt("\n\t\tCLOSE/OPEN");
279 prt("\n");
280 i++;
281 if (i == LOGSIZE)
282 i = 0;
283 }
284 }
285
286
287 void
288 save_buffer(char *buffer, off_t bufferlength, int fd)
289 {
290 off_t ret;
291 ssize_t byteswritten;
292
293 if (fd <= 0 || bufferlength == 0)
294 return;
295
296 if (bufferlength > SSIZE_MAX) {
297 prt("fsx flaw: overflow in save_buffer\n");
298 exit(67);
299 }
300 if (lite) {
301 off_t size_by_seek = lseek(fd, (off_t)0, SEEK_END);
302 if (size_by_seek == (off_t)-1)
303 prterr("save_buffer: lseek eof");
304 else if (bufferlength > size_by_seek) {
305 warn("save_buffer: .fsxgood file too short... will save 0x%llx bytes instead of 0x%llx\n", (unsigned long long)size_by_seek,
306 (unsigned long long)bufferlength);
307 bufferlength = size_by_seek;
308 }
309 }
310
311 ret = lseek(fd, (off_t)0, SEEK_SET);
312 if (ret == (off_t)-1)
313 prterr("save_buffer: lseek 0");
314
315 byteswritten = write(fd, buffer, (size_t)bufferlength);
316 if (byteswritten != bufferlength) {
317 if (byteswritten == -1)
318 prterr("save_buffer write");
319 else
320 warn("save_buffer: short write, 0x%x bytes instead of 0x%llx\n",
321 (unsigned)byteswritten,
322 (unsigned long long)bufferlength);
323 }
324 }
325
326
327 void
328 report_failure(int status)
329 {
330 logdump();
331
332 if (fsxgoodfd) {
333 if (good_buf) {
334 save_buffer(good_buf, file_size, fsxgoodfd);
335 prt("Correct content saved for comparison\n");
336 prt("(maybe hexdump \"%s\" vs \"%s.fsxgood\")\n",
337 fname, fname);
338 }
339 close(fsxgoodfd);
340 }
341 exit(status);
342 }
343
344
345 #define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \
346 *(((unsigned char *)(cp)) + 1)))
347
348 void
349 check_buffers(unsigned offset, unsigned size)
350 {
351 unsigned char c, t;
352 unsigned i = 0;
353 unsigned n = 0;
354 unsigned op = 0;
355 unsigned bad = 0;
356
357 if (memcmp(good_buf + offset, temp_buf, size) != 0) {
358 prt("READ BAD DATA: offset = 0x%x, size = 0x%x\n",
359 offset, size);
360 prt("OFFSET\tGOOD\tBAD\tRANGE\n");
361 while (size > 0) {
362 c = good_buf[offset];
363 t = temp_buf[i];
364 if (c != t) {
365 if (n == 0) {
366 bad = short_at(&temp_buf[i]);
367 prt("0x%5x\t0x%04x\t0x%04x", offset,
368 short_at(&good_buf[offset]), bad);
369 op = temp_buf[offset & 1 ? i+1 : i];
370 }
371 n++;
372 badoff = offset;
373 }
374 offset++;
375 i++;
376 size--;
377 }
378 if (n) {
379 prt("\t0x%5x\n", n);
380 if (bad)
381 prt("operation# (mod 256) for the bad data may be %u\n", ((unsigned)op & 0xff));
382 else
383 prt("operation# (mod 256) for the bad data unknown, check HOLE and EXTEND ops\n");
384 } else
385 prt("????????????????\n");
386 report_failure(110);
387 }
388 }
389
390
391 void
392 check_size(void)
393 {
394 struct stat statbuf;
395 off_t size_by_seek;
396
397 if (fstat(fd, &statbuf)) {
398 prterr("check_size: fstat");
399 statbuf.st_size = -1;
400 }
401 size_by_seek = lseek(fd, (off_t)0, SEEK_END);
402 if (file_size != statbuf.st_size || file_size != size_by_seek) {
403 prt("Size error: expected 0x%llx stat 0x%llx seek 0x%llx\n",
404 (unsigned long long)file_size,
405 (unsigned long long)statbuf.st_size,
406 (unsigned long long)size_by_seek);
407 report_failure(120);
408 }
409 }
410
411
412 void
413 check_trunc_hack(void)
414 {
415 struct stat statbuf;
416
417 ftruncate(fd, (off_t)0);
418 ftruncate(fd, (off_t)100000);
419 fstat(fd, &statbuf);
420 if (statbuf.st_size != (off_t)100000) {
421 prt("no extend on truncate! not posix!\n");
422 exit(130);
423 }
424 ftruncate(fd, (off_t)0);
425 }
426
427
428 void
429 doread(unsigned offset, unsigned size)
430 {
431 off_t ret;
432 unsigned iret;
433
434 offset -= offset % readbdy;
435 if (size == 0) {
436 if (!quiet && testcalls > simulatedopcount)
437 prt("skipping zero size read\n");
438 log4(OP_SKIPPED, OP_READ, offset, size);
439 return;
440 }
441 if (size + offset > file_size) {
442 if (!quiet && testcalls > simulatedopcount)
443 prt("skipping seek/read past end of file\n");
444 log4(OP_SKIPPED, OP_READ, offset, size);
445 return;
446 }
447
448 log4(OP_READ, offset, size, 0);
449
450 if (testcalls <= simulatedopcount)
451 return;
452
453 if (!quiet && ((progressinterval &&
454 testcalls % progressinterval == 0) ||
455 (debug &&
456 (monitorstart == -1 ||
457 (offset + size > monitorstart &&
458 (monitorend == -1 || offset <= monitorend))))))
459 prt("%lu read\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
460 offset, offset + size - 1, size);
461 ret = lseek(fd, (off_t)offset, SEEK_SET);
462 if (ret == (off_t)-1) {
463 prterr("doread: lseek");
464 report_failure(140);
465 }
466 iret = read(fd, temp_buf, size);
467 if (iret != size) {
468 if (iret == -1)
469 prterr("doread: read");
470 else
471 prt("short read: 0x%x bytes instead of 0x%x\n",
472 iret, size);
473 report_failure(141);
474 }
475 check_buffers(offset, size);
476 }
477
478
479 void
480 check_eofpage(char *s, unsigned offset, char *p, int size)
481 {
482 uintptr_t last_page, should_be_zero;
483
484 if (offset + size <= (file_size & ~page_mask))
485 return;
486 /*
487 * we landed in the last page of the file
488 * test to make sure the VM system provided 0's
489 * beyond the true end of the file mapping
490 * (as required by mmap def in 1996 posix 1003.1)
491 */
492 last_page = ((uintptr_t)p + (offset & page_mask) + size) & ~page_mask;
493
494 for (should_be_zero = last_page + (file_size & page_mask);
495 should_be_zero < last_page + page_size;
496 should_be_zero++)
497 if (*(char *)should_be_zero) {
498 prt("Mapped %s: non-zero data past EOF (0x%llx) page offset 0x%x is 0x%04x\n",
499 s, file_size - 1, should_be_zero & page_mask,
500 short_at(should_be_zero));
501 report_failure(205);
502 }
503 }
504
505
506 void
507 domapread(unsigned offset, unsigned size)
508 {
509 unsigned pg_offset;
510 unsigned map_size;
511 char *p;
512
513 offset -= offset % readbdy;
514 if (size == 0) {
515 if (!quiet && testcalls > simulatedopcount)
516 prt("skipping zero size read\n");
517 log4(OP_SKIPPED, OP_MAPREAD, offset, size);
518 return;
519 }
520 if (size + offset > file_size) {
521 if (!quiet && testcalls > simulatedopcount)
522 prt("skipping seek/read past end of file\n");
523 log4(OP_SKIPPED, OP_MAPREAD, offset, size);
524 return;
525 }
526
527 log4(OP_MAPREAD, offset, size, 0);
528
529 if (testcalls <= simulatedopcount)
530 return;
531
532 if (!quiet && ((progressinterval &&
533 testcalls % progressinterval == 0) ||
534 (debug &&
535 (monitorstart == -1 ||
536 (offset + size > monitorstart &&
537 (monitorend == -1 || offset <= monitorend))))))
538 prt("%lu mapread\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
539 offset, offset + size - 1, size);
540
541 pg_offset = offset & page_mask;
542 map_size = pg_offset + size;
543
544 if ((p = (char *)mmap(0, map_size, PROT_READ, MAP_FILE | MAP_SHARED, fd,
545 (off_t)(offset - pg_offset))) == (char *)-1) {
546 prterr("domapread: mmap");
547 report_failure(190);
548 }
549 memcpy(temp_buf, p + pg_offset, size);
550
551 check_eofpage("Read", offset, p, size);
552
553 if (munmap(p, map_size) != 0) {
554 prterr("domapread: munmap");
555 report_failure(191);
556 }
557
558 check_buffers(offset, size);
559 }
560
561
562 void
563 gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size)
564 {
565 while (size--) {
566 good_buf[offset] = testcalls % 256;
567 if (offset % 2)
568 good_buf[offset] += original_buf[offset];
569 offset++;
570 }
571 }
572
573
574 void
575 dowrite(unsigned offset, unsigned size)
576 {
577 off_t ret;
578 unsigned iret;
579
580 offset -= offset % writebdy;
581 if (size == 0) {
582 if (!quiet && testcalls > simulatedopcount)
583 prt("skipping zero size write\n");
584 log4(OP_SKIPPED, OP_WRITE, offset, size);
585 return;
586 }
587
588 log4(OP_WRITE, offset, size, file_size);
589
590 gendata(original_buf, good_buf, offset, size);
591 if (file_size < offset + size) {
592 if (file_size < offset)
593 memset(good_buf + file_size, '\0', offset - file_size);
594 file_size = offset + size;
595 if (lite) {
596 warn("Lite file size bug in fsx!");
597 report_failure(149);
598 }
599 }
600
601 if (testcalls <= simulatedopcount)
602 return;
603
604 if (!quiet && ((progressinterval &&
605 testcalls % progressinterval == 0) ||
606 (debug &&
607 (monitorstart == -1 ||
608 (offset + size > monitorstart &&
609 (monitorend == -1 || offset <= monitorend))))))
610 prt("%lu write\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
611 offset, offset + size - 1, size);
612 ret = lseek(fd, (off_t)offset, SEEK_SET);
613 if (ret == (off_t)-1) {
614 prterr("dowrite: lseek");
615 report_failure(150);
616 }
617 iret = write(fd, good_buf + offset, size);
618 if (iret != size) {
619 if (iret == -1)
620 prterr("dowrite: write");
621 else
622 prt("short write: 0x%x bytes instead of 0x%x\n",
623 iret, size);
624 report_failure(151);
625 }
626 }
627
628
629 void
630 domapwrite(unsigned offset, unsigned size)
631 {
632 unsigned pg_offset;
633 unsigned map_size;
634 off_t cur_filesize;
635 char *p;
636
637 offset -= offset % writebdy;
638 if (size == 0) {
639 if (!quiet && testcalls > simulatedopcount)
640 prt("skipping zero size write\n");
641 log4(OP_SKIPPED, OP_MAPWRITE, offset, size);
642 return;
643 }
644 cur_filesize = file_size;
645
646 log4(OP_MAPWRITE, offset, size, 0);
647
648 gendata(original_buf, good_buf, offset, size);
649 if (file_size < offset + size) {
650 if (file_size < offset)
651 memset(good_buf + file_size, '\0', offset - file_size);
652 file_size = offset + size;
653 if (lite) {
654 warn("Lite file size bug in fsx!");
655 report_failure(200);
656 }
657 }
658
659 if (testcalls <= simulatedopcount)
660 return;
661
662 if (!quiet && ((progressinterval &&
663 testcalls % progressinterval == 0) ||
664 (debug &&
665 (monitorstart == -1 ||
666 (offset + size > monitorstart &&
667 (monitorend == -1 || offset <= monitorend))))))
668 prt("%lu mapwrite\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
669 offset, offset + size - 1, size);
670
671 if (file_size > cur_filesize) {
672 if (ftruncate(fd, file_size) == -1) {
673 prterr("domapwrite: ftruncate");
674 exit(201);
675 }
676 }
677 pg_offset = offset & page_mask;
678 map_size = pg_offset + size;
679
680 if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE,
681 MAP_FILE | MAP_SHARED, fd,
682 (off_t)(offset - pg_offset))) == (char *)-1) {
683 prterr("domapwrite: mmap");
684 report_failure(202);
685 }
686 memcpy(p + pg_offset, good_buf + offset, size);
687 if (msync(p, map_size, 0) != 0) {
688 prterr("domapwrite: msync");
689 report_failure(203);
690 }
691
692 check_eofpage("Write", offset, p, size);
693
694 if (munmap(p, map_size) != 0) {
695 prterr("domapwrite: munmap");
696 report_failure(204);
697 }
698 }
699
700
701 void
702 dotruncate(unsigned size)
703 {
704 int oldsize = file_size;
705
706 size -= size % truncbdy;
707 if (size > biggest) {
708 biggest = size;
709 if (!quiet && testcalls > simulatedopcount)
710 prt("truncating to largest ever: 0x%x\n", size);
711 }
712
713 log4(OP_TRUNCATE, size, (unsigned)file_size, 0);
714
715 if (size > file_size)
716 memset(good_buf + file_size, '\0', size - file_size);
717 file_size = size;
718
719 if (testcalls <= simulatedopcount)
720 return;
721
722 if ((progressinterval && testcalls % progressinterval == 0) ||
723 (debug && (monitorstart == -1 || monitorend == -1 ||
724 size <= monitorend)))
725 prt("%lu trunc\tfrom 0x%x to 0x%x\n", testcalls, oldsize, size);
726 if (ftruncate(fd, (off_t)size) == -1) {
727 prt("ftruncate1: %x\n", size);
728 prterr("dotruncate: ftruncate");
729 report_failure(160);
730 }
731 }
732
733
734 void
735 writefileimage()
736 {
737 ssize_t iret;
738
739 if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) {
740 prterr("writefileimage: lseek");
741 report_failure(171);
742 }
743 iret = write(fd, good_buf, file_size);
744 if ((off_t)iret != file_size) {
745 if (iret == -1)
746 prterr("writefileimage: write");
747 else
748 prt("short write: 0x%x bytes instead of 0x%llx\n",
749 iret, (unsigned long long)file_size);
750 report_failure(172);
751 }
752 if (lite ? 0 : ftruncate(fd, file_size) == -1) {
753 prt("ftruncate2: %llx\n", (unsigned long long)file_size);
754 prterr("writefileimage: ftruncate");
755 report_failure(173);
756 }
757 }
758
759
760 void
761 docloseopen(void)
762 {
763 if (testcalls <= simulatedopcount)
764 return;
765
766 if (debug)
767 prt("%lu close/open\n", testcalls);
768 if (close(fd)) {
769 prterr("docloseopen: close");
770 report_failure(180);
771 }
772 fd = open(fname, O_RDWR, 0);
773 if (fd < 0) {
774 prterr("docloseopen: open");
775 report_failure(181);
776 }
777 }
778
779
780 void
781 test(void)
782 {
783 unsigned long offset;
784 unsigned long size = maxoplen;
785 unsigned long rv = random();
786 unsigned long op = rv % (3 + !lite + mapped_writes);
787
788 /* turn off the map read if necessary */
789
790 if (op == 2 && !mapped_reads)
791 op = 0;
792
793 if (simulatedopcount > 0 && testcalls == simulatedopcount)
794 writefileimage();
795
796 testcalls++;
797
798 if (closeprob)
799 closeopen = (rv >> 3) < (1 << 28) / closeprob;
800
801 if (debugstart > 0 && testcalls >= debugstart)
802 debug = 1;
803
804 if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0)
805 prt("%lu...\n", testcalls);
806
807 /*
808 * READ: op = 0
809 * WRITE: op = 1
810 * MAPREAD: op = 2
811 * TRUNCATE: op = 3
812 * MAPWRITE: op = 3 or 4
813 */
814 if (lite ? 0 : op == 3 && style == 0) /* vanilla truncate? */
815 dotruncate(random() % maxfilelen);
816 else {
817 if (randomoplen)
818 size = random() % (maxoplen+1);
819 if (lite ? 0 : op == 3)
820 dotruncate(size);
821 else {
822 offset = random();
823 if (op == 1 || op == (lite ? 3 : 4)) {
824 offset %= maxfilelen;
825 if (offset + size > maxfilelen)
826 size = maxfilelen - offset;
827 if (op != 1)
828 domapwrite(offset, size);
829 else
830 dowrite(offset, size);
831 } else {
832 if (file_size)
833 offset %= file_size;
834 else
835 offset = 0;
836 if (offset + size > file_size)
837 size = file_size - offset;
838 if (op != 0)
839 domapread(offset, size);
840 else
841 doread(offset, size);
842 }
843 }
844 }
845 if (sizechecks && testcalls > simulatedopcount)
846 check_size();
847 if (closeopen)
848 docloseopen();
849 }
850
851
852 void
853 cleanup(sig)
854 int sig;
855 {
856 if (sig)
857 prt("signal %d\n", sig);
858 prt("testcalls = %lu\n", testcalls);
859 exit(sig);
860 }
861
862
863 void
864 usage(void)
865 {
866 fprintf(stdout, "usage: %s",
867 "fsx [-dnqLOW] [-b opnum] [-c Prob] [-l flen] [-m start:end] [-o oplen] [-p progressinterval] [-r readbdy] [-s style] [-t truncbdy] [-w writebdy] [-D startingop] [-N numops] [-P dirpath] [-S seed] fname\n\
868 -b opnum: beginning operation number (default 1)\n\
869 -c P: 1 in P chance of file close+open at each op (default infinity)\n\
870 -d: debug output for all operations\n\
871 -l flen: the upper bound on file size (default 262144)\n\
872 -m startop:endop: monitor (print debug output) specified byte range (default 0:infinity)\n\
873 -n: no verifications of file size\n\
874 -o oplen: the upper bound on operation size (default 65536)\n\
875 -p progressinterval: debug output at specified operation interval\n\
876 -q: quieter operation\n\
877 -r readbdy: 4096 would make reads page aligned (default 1)\n\
878 -s style: 1 gives smaller truncates (default 0)\n\
879 -t truncbdy: 4096 would make truncates page aligned (default 1)\n\
880 -w writebdy: 4096 would make writes page aligned (default 1)\n\
881 -D startingop: debug output starting at specified operation\n\
882 -L: fsxLite - no file creations & no file size changes\n\
883 -N numops: total # operations to do (default infinity)\n\
884 -O: use oplen (see -o flag) for every op (default random)\n\
885 -P dirpath: save .fsxlog and .fsxgood files in dirpath (default ./)\n\
886 -S seed: for random # generator (default 1) 0 gets timestamp\n\
887 -W: mapped write operations DISabled\n\
888 -R: mapped read operations DISabled)\n\
889 fname: this filename is REQUIRED (no default)\n");
890 exit(90);
891 }
892
893
894 int
895 getnum(char *s, char **e)
896 {
897 int ret = -1;
898
899 *e = (char *) 0;
900 ret = strtol(s, e, 0);
901 if (*e)
902 switch (**e) {
903 case 'b':
904 case 'B':
905 ret *= 512;
906 *e = *e + 1;
907 break;
908 case 'k':
909 case 'K':
910 ret *= 1024;
911 *e = *e + 1;
912 break;
913 case 'm':
914 case 'M':
915 ret *= 1024*1024;
916 *e = *e + 1;
917 break;
918 case 'w':
919 case 'W':
920 ret *= 4;
921 *e = *e + 1;
922 break;
923 }
924 return (ret);
925 }
926
927
928 int
929 main(int argc, char **argv)
930 {
931 int i, ch;
932 char *endp;
933 char goodfile[1024];
934 char logfile[1024];
935
936 goodfile[0] = 0;
937 logfile[0] = 0;
938
939 page_size = getpagesize();
940 page_mask = page_size - 1;
941
942 setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
943
944 while ((ch = getopt(argc, argv, "b:c:dl:m:no:p:qr:s:t:w:D:LN:OP:RS:W"))
945 != -1)
946 switch (ch) {
947 case 'b':
948 simulatedopcount = getnum(optarg, &endp);
949 if (!quiet)
950 fprintf(stdout, "Will begin at operation %ld\n",
951 simulatedopcount);
952 if (simulatedopcount == 0)
953 usage();
954 simulatedopcount -= 1;
955 break;
956 case 'c':
957 closeprob = getnum(optarg, &endp);
958 if (!quiet)
959 fprintf(stdout,
960 "Chance of close/open is 1 in %d\n",
961 closeprob);
962 if (closeprob <= 0)
963 usage();
964 break;
965 case 'd':
966 debug = 1;
967 break;
968 case 'l':
969 maxfilelen = getnum(optarg, &endp);
970 if (maxfilelen <= 0)
971 usage();
972 break;
973 case 'm':
974 monitorstart = getnum(optarg, &endp);
975 if (monitorstart < 0)
976 usage();
977 if (!endp || *endp++ != ':')
978 usage();
979 monitorend = getnum(endp, &endp);
980 if (monitorend < 0)
981 usage();
982 if (monitorend == 0)
983 monitorend = -1; /* aka infinity */
984 debug = 1;
985 case 'n':
986 sizechecks = 0;
987 break;
988 case 'o':
989 maxoplen = getnum(optarg, &endp);
990 if (maxoplen <= 0)
991 usage();
992 break;
993 case 'p':
994 progressinterval = getnum(optarg, &endp);
995 if (progressinterval < 0)
996 usage();
997 break;
998 case 'q':
999 quiet = 1;
1000 break;
1001 case 'r':
1002 readbdy = getnum(optarg, &endp);
1003 if (readbdy <= 0)
1004 usage();
1005 break;
1006 case 's':
1007 style = getnum(optarg, &endp);
1008 if (style < 0 || style > 1)
1009 usage();
1010 break;
1011 case 't':
1012 truncbdy = getnum(optarg, &endp);
1013 if (truncbdy <= 0)
1014 usage();
1015 break;
1016 case 'w':
1017 writebdy = getnum(optarg, &endp);
1018 if (writebdy <= 0)
1019 usage();
1020 break;
1021 case 'D':
1022 debugstart = getnum(optarg, &endp);
1023 if (debugstart < 1)
1024 usage();
1025 break;
1026 case 'L':
1027 lite = 1;
1028 break;
1029 case 'N':
1030 numops = getnum(optarg, &endp);
1031 if (numops < 0)
1032 usage();
1033 break;
1034 case 'O':
1035 randomoplen = 0;
1036 break;
1037 case 'P':
1038 strncpy(goodfile, optarg, sizeof(goodfile));
1039 strcat(goodfile, "/");
1040 strncpy(logfile, optarg, sizeof(logfile));
1041 strcat(logfile, "/");
1042 break;
1043 case 'R':
1044 mapped_reads = 0;
1045 break;
1046 case 'S':
1047 seed = getnum(optarg, &endp);
1048 if (seed == 0)
1049 seed = time(0) % 10000;
1050 if (!quiet)
1051 fprintf(stdout, "Seed set to %d\n", seed);
1052 if (seed < 0)
1053 usage();
1054 break;
1055 case 'W':
1056 mapped_writes = 0;
1057 if (!quiet)
1058 fprintf(stdout, "mapped writes DISABLED\n");
1059 break;
1060
1061 default:
1062 usage();
1063 /* NOTREACHED */
1064 }
1065 argc -= optind;
1066 argv += optind;
1067 if (argc != 1)
1068 usage();
1069 fname = argv[0];
1070
1071 signal(SIGHUP, cleanup);
1072 signal(SIGINT, cleanup);
1073 signal(SIGPIPE, cleanup);
1074 signal(SIGALRM, cleanup);
1075 signal(SIGTERM, cleanup);
1076 signal(SIGXCPU, cleanup);
1077 signal(SIGXFSZ, cleanup);
1078 signal(SIGVTALRM, cleanup);
1079 signal(SIGUSR1, cleanup);
1080 signal(SIGUSR2, cleanup);
1081
1082 initstate(seed, state, 256);
1083 setstate(state);
1084 fd = open(fname, O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC), 0666);
1085 if (fd < 0) {
1086 prterr(fname);
1087 exit(91);
1088 }
1089 strncat(goodfile, fname, 256);
1090 strcat (goodfile, ".fsxgood");
1091 fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666);
1092 if (fsxgoodfd < 0) {
1093 prterr(goodfile);
1094 exit(92);
1095 }
1096 strncat(logfile, fname, 256);
1097 strcat (logfile, ".fsxlog");
1098 fsxlogf = fopen(logfile, "w");
1099 if (fsxlogf == NULL) {
1100 prterr(logfile);
1101 exit(93);
1102 }
1103 if (lite) {
1104 off_t ret;
1105 file_size = maxfilelen = lseek(fd, (off_t)0, SEEK_END);
1106 if (file_size == (off_t)-1) {
1107 prterr(fname);
1108 warn("main: lseek eof");
1109 exit(94);
1110 }
1111 ret = lseek(fd, (off_t)0, SEEK_SET);
1112 if (ret == (off_t)-1) {
1113 prterr(fname);
1114 warn("main: lseek 0");
1115 exit(95);
1116 }
1117 }
1118 original_buf = (char *) malloc(maxfilelen);
1119 for (i = 0; i < maxfilelen; i++)
1120 original_buf[i] = random() % 256;
1121 good_buf = (char *) malloc(maxfilelen);
1122 memset(good_buf, '\0', maxfilelen);
1123 temp_buf = (char *) malloc(maxoplen);
1124 memset(temp_buf, '\0', maxoplen);
1125 if (lite) { /* zero entire existing file */
1126 ssize_t written;
1127
1128 written = write(fd, good_buf, (size_t)maxfilelen);
1129 if (written != maxfilelen) {
1130 if (written == -1) {
1131 prterr(fname);
1132 warn("main: error on write");
1133 } else
1134 warn("main: short write, 0x%x bytes instead of 0x%x\n",
1135 (unsigned)written, maxfilelen);
1136 exit(98);
1137 }
1138 } else
1139 check_trunc_hack();
1140
1141 while (numops == -1 || numops--)
1142 test();
1143
1144 if (close(fd)) {
1145 prterr("close");
1146 report_failure(99);
1147 }
1148 prt("All operations completed A-OK!\n");
1149
1150 exit(0);
1151 return 0;
1152 }
1153
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