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Add a manual page explaining the format of /etc/manpath.config.
[dragonfly/vkernel-mp.git] / tools / regression / fsx / fsx.c
blob0062effab66846e7cd93aa3aa63552f047763d74
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 * $DragonFly: src/tools/regression/fsx/fsx.c,v 1.1 2003/10/11 15:37:14 drhodus Exp $
39 *
40 */
41
42 #include <sys/types.h>
43 #include <sys/stat.h>
44 #ifdef _UWIN
45 # include <sys/param.h>
46 # include <limits.h>
47 # include <time.h>
48 # include <strings.h>
49 #endif
50 #include <fcntl.h>
51 #include <sys/mman.h>
52 #ifndef MAP_FILE
53 # define MAP_FILE 0
54 #endif
55 #include <limits.h>
56 #include <signal.h>
57 #include <stdio.h>
58 #include <stdlib.h>
59 #include <string.h>
60 #include <unistd.h>
61 #include <stdarg.h>
62 #include <errno.h>
63
64 #define NUMPRINTCOLUMNS 32 /* # columns of data to print on each line */
65
66 /*
67 * A log entry is an operation and a bunch of arguments.
68 */
69
70 struct log_entry {
71 int operation;
72 int args[3];
73 };
74
75 #define LOGSIZE 1000
76
77 struct log_entry oplog[LOGSIZE]; /* the log */
78 int logptr = 0; /* current position in log */
79 int logcount = 0; /* total ops */
80
81 /*
82 * Define operations
83 */
84
85 #define OP_READ 1
86 #define OP_WRITE 2
87 #define OP_TRUNCATE 3
88 #define OP_CLOSEOPEN 4
89 #define OP_MAPREAD 5
90 #define OP_MAPWRITE 6
91 #define OP_SKIPPED 7
92
93 int page_size;
94 int page_mask;
95
96 char *original_buf; /* a pointer to the original data */
97 char *good_buf; /* a pointer to the correct data */
98 char *temp_buf; /* a pointer to the current data */
99 char *fname; /* name of our test file */
100 int fd; /* fd for our test file */
101
102 off_t file_size = 0;
103 off_t biggest = 0;
104 char state[256];
105 unsigned long testcalls = 0; /* calls to function "test" */
106
107 unsigned long simulatedopcount = 0; /* -b flag */
108 int closeprob = 0; /* -c flag */
109 int debug = 0; /* -d flag */
110 unsigned long debugstart = 0; /* -D flag */
111 unsigned long maxfilelen = 256 * 1024; /* -l flag */
112 int sizechecks = 1; /* -n flag disables them */
113 int maxoplen = 64 * 1024; /* -o flag */
114 int quiet = 0; /* -q flag */
115 unsigned long progressinterval = 0; /* -p flag */
116 int readbdy = 1; /* -r flag */
117 int style = 0; /* -s flag */
118 int truncbdy = 1; /* -t flag */
119 int writebdy = 1; /* -w flag */
120 long monitorstart = -1; /* -m flag */
121 long monitorend = -1; /* -m flag */
122 int lite = 0; /* -L flag */
123 long numops = -1; /* -N flag */
124 int randomoplen = 1; /* -O flag disables it */
125 int seed = 1; /* -S flag */
126 int mapped_writes = 1; /* -W flag disables */
127 int mapped_reads = 1; /* -R flag disables it */
128 int fsxgoodfd = 0;
129 FILE * fsxlogf = NULL;
130 int badoff = -1;
131 int closeopen = 0;
132
133
134 void
135 vwarnc(code, fmt, ap)
136 int code;
137 const char *fmt;
138 va_list ap;
139 {
140 fprintf(stderr, "fsx: ");
141 if (fmt != NULL) {
142 vfprintf(stderr, fmt, ap);
143 fprintf(stderr, ": ");
144 }
145 fprintf(stderr, "%s\n", strerror(code));
146 }
147
148
149 void
150 warn(const char * fmt, ...)
151 {
152 va_list ap;
153 va_start(ap, fmt);
154 vwarnc(errno, fmt, ap);
155 va_end(ap);
156 }
157
158
159 void
160 prt(char *fmt, ...)
161 {
162 va_list args;
163
164 va_start(args, fmt);
165 vfprintf(stdout, fmt, args);
166 if (fsxlogf)
167 vfprintf(fsxlogf, fmt, args);
168 va_end(args);
169 }
170
171 void
172 prterr(char *prefix)
173 {
174 prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno));
175 }
176
177
178 void
179 log4(int operation, int arg0, int arg1, int arg2)
180 {
181 struct log_entry *le;
182
183 le = &oplog[logptr];
184 le->operation = operation;
185 if (closeopen)
186 le->operation = ~ le->operation;
187 le->args[0] = arg0;
188 le->args[1] = arg1;
189 le->args[2] = arg2;
190 logptr++;
191 logcount++;
192 if (logptr >= LOGSIZE)
193 logptr = 0;
194 }
195
196
197 void
198 logdump(void)
199 {
200 int i, count, down;
201 struct log_entry *lp;
202
203 prt("LOG DUMP (%d total operations):\n", logcount);
204 if (logcount < LOGSIZE) {
205 i = 0;
206 count = logcount;
207 } else {
208 i = logptr;
209 count = LOGSIZE;
210 }
211 for ( ; count > 0; count--) {
212 int opnum;
213
214 opnum = i+1 + (logcount/LOGSIZE)*LOGSIZE;
215 prt("%d(%d mod 256): ", opnum, opnum%256);
216 lp = &oplog[i];
217 if ((closeopen = lp->operation < 0))
218 lp->operation = ~ lp->operation;
219
220 switch (lp->operation) {
221 case OP_MAPREAD:
222 prt("MAPREAD\t0x%x thru 0x%x\t(0x%x bytes)",
223 lp->args[0], lp->args[0] + lp->args[1] - 1,
224 lp->args[1]);
225 if (badoff >= lp->args[0] && badoff <
226 lp->args[0] + lp->args[1])
227 prt("\t***RRRR***");
228 break;
229 case OP_MAPWRITE:
230 prt("MAPWRITE 0x%x thru 0x%x\t(0x%x bytes)",
231 lp->args[0], lp->args[0] + lp->args[1] - 1,
232 lp->args[1]);
233 if (badoff >= lp->args[0] && badoff <
234 lp->args[0] + lp->args[1])
235 prt("\t******WWWW");
236 break;
237 case OP_READ:
238 prt("READ\t0x%x thru 0x%x\t(0x%x bytes)",
239 lp->args[0], lp->args[0] + lp->args[1] - 1,
240 lp->args[1]);
241 if (badoff >= lp->args[0] &&
242 badoff < lp->args[0] + lp->args[1])
243 prt("\t***RRRR***");
244 break;
245 case OP_WRITE:
246 prt("WRITE\t0x%x thru 0x%x\t(0x%x bytes)",
247 lp->args[0], lp->args[0] + lp->args[1] - 1,
248 lp->args[1]);
249 if (lp->args[0] > lp->args[2])
250 prt(" HOLE");
251 else if (lp->args[0] + lp->args[1] > lp->args[2])
252 prt(" EXTEND");
253 if ((badoff >= lp->args[0] || badoff >=lp->args[2]) &&
254 badoff < lp->args[0] + lp->args[1])
255 prt("\t***WWWW");
256 break;
257 case OP_TRUNCATE:
258 down = lp->args[0] < lp->args[1];
259 prt("TRUNCATE %s\tfrom 0x%x to 0x%x",
260 down ? "DOWN" : "UP", lp->args[1], lp->args[0]);
261 if (badoff >= lp->args[!down] &&
262 badoff < lp->args[!!down])
263 prt("\t******WWWW");
264 break;
265 case OP_SKIPPED:
266 prt("SKIPPED (no operation)");
267 break;
268 default:
269 prt("BOGUS LOG ENTRY (operation code = %d)!",
270 lp->operation);
271 }
272 if (closeopen)
273 prt("\n\t\tCLOSE/OPEN");
274 prt("\n");
275 i++;
276 if (i == LOGSIZE)
277 i = 0;
278 }
279 }
280
281
282 void
283 save_buffer(char *buffer, off_t bufferlength, int fd)
284 {
285 off_t ret;
286 ssize_t byteswritten;
287
288 if (fd <= 0 || bufferlength == 0)
289 return;
290
291 if (bufferlength > SSIZE_MAX) {
292 prt("fsx flaw: overflow in save_buffer\n");
293 exit(67);
294 }
295 if (lite) {
296 off_t size_by_seek = lseek(fd, (off_t)0, SEEK_END);
297 if (size_by_seek == (off_t)-1)
298 prterr("save_buffer: lseek eof");
299 else if (bufferlength > size_by_seek) {
300 warn("save_buffer: .fsxgood file too short... will save 0x%llx bytes instead of 0x%llx\n", (unsigned long long)size_by_seek,
301 (unsigned long long)bufferlength);
302 bufferlength = size_by_seek;
303 }
304 }
305
306 ret = lseek(fd, (off_t)0, SEEK_SET);
307 if (ret == (off_t)-1)
308 prterr("save_buffer: lseek 0");
309
310 byteswritten = write(fd, buffer, (size_t)bufferlength);
311 if (byteswritten != bufferlength) {
312 if (byteswritten == -1)
313 prterr("save_buffer write");
314 else
315 warn("save_buffer: short write, 0x%x bytes instead of 0x%llx\n",
316 (unsigned)byteswritten,
317 (unsigned long long)bufferlength);
318 }
319 }
320
321
322 void
323 report_failure(int status)
324 {
325 logdump();
326
327 if (fsxgoodfd) {
328 if (good_buf) {
329 save_buffer(good_buf, file_size, fsxgoodfd);
330 prt("Correct content saved for comparison\n");
331 prt("(maybe hexdump \"%s\" vs \"%s.fsxgood\")\n",
332 fname, fname);
333 }
334 close(fsxgoodfd);
335 }
336 exit(status);
337 }
338
339
340 #define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \
341 *(((unsigned char *)(cp)) + 1)))
342
343 void
344 check_buffers(unsigned offset, unsigned size)
345 {
346 unsigned char c, t;
347 unsigned i = 0;
348 unsigned n = 0;
349 unsigned op = 0;
350 unsigned bad = 0;
351
352 if (memcmp(good_buf + offset, temp_buf, size) != 0) {
353 prt("READ BAD DATA: offset = 0x%x, size = 0x%x\n",
354 offset, size);
355 prt("OFFSET\tGOOD\tBAD\tRANGE\n");
356 while (size > 0) {
357 c = good_buf[offset];
358 t = temp_buf[i];
359 if (c != t) {
360 if (n == 0) {
361 bad = short_at(&temp_buf[i]);
362 prt("0x%5x\t0x%04x\t0x%04x", offset,
363 short_at(&good_buf[offset]), bad);
364 op = temp_buf[offset & 1 ? i+1 : i];
365 }
366 n++;
367 badoff = offset;
368 }
369 offset++;
370 i++;
371 size--;
372 }
373 if (n) {
374 prt("\t0x%5x\n", n);
375 if (bad)
376 prt("operation# (mod 256) for the bad data may be %u\n", ((unsigned)op & 0xff));
377 else
378 prt("operation# (mod 256) for the bad data unknown, check HOLE and EXTEND ops\n");
379 } else
380 prt("????????????????\n");
381 report_failure(110);
382 }
383 }
384
385
386 void
387 check_size(void)
388 {
389 struct stat statbuf;
390 off_t size_by_seek;
391
392 if (fstat(fd, &statbuf)) {
393 prterr("check_size: fstat");
394 statbuf.st_size = -1;
395 }
396 size_by_seek = lseek(fd, (off_t)0, SEEK_END);
397 if (file_size != statbuf.st_size || file_size != size_by_seek) {
398 prt("Size error: expected 0x%llx stat 0x%llx seek 0x%llx\n",
399 (unsigned long long)file_size,
400 (unsigned long long)statbuf.st_size,
401 (unsigned long long)size_by_seek);
402 report_failure(120);
403 }
404 }
405
406
407 void
408 check_trunc_hack(void)
409 {
410 struct stat statbuf;
411
412 ftruncate(fd, (off_t)0);
413 ftruncate(fd, (off_t)100000);
414 fstat(fd, &statbuf);
415 if (statbuf.st_size != (off_t)100000) {
416 prt("no extend on truncate! not posix!\n");
417 exit(130);
418 }
419 ftruncate(fd, (off_t)0);
420 }
421
422
423 void
424 doread(unsigned offset, unsigned size)
425 {
426 off_t ret;
427 unsigned iret;
428
429 offset -= offset % readbdy;
430 if (size == 0) {
431 if (!quiet && testcalls > simulatedopcount)
432 prt("skipping zero size read\n");
433 log4(OP_SKIPPED, OP_READ, offset, size);
434 return;
435 }
436 if (size + offset > file_size) {
437 if (!quiet && testcalls > simulatedopcount)
438 prt("skipping seek/read past end of file\n");
439 log4(OP_SKIPPED, OP_READ, offset, size);
440 return;
441 }
442
443 log4(OP_READ, offset, size, 0);
444
445 if (testcalls <= simulatedopcount)
446 return;
447
448 if (!quiet && ((progressinterval &&
449 testcalls % progressinterval == 0) ||
450 (debug &&
451 (monitorstart == -1 ||
452 (offset + size > monitorstart &&
453 (monitorend == -1 || offset <= monitorend))))))
454 prt("%lu read\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
455 offset, offset + size - 1, size);
456 ret = lseek(fd, (off_t)offset, SEEK_SET);
457 if (ret == (off_t)-1) {
458 prterr("doread: lseek");
459 report_failure(140);
460 }
461 iret = read(fd, temp_buf, size);
462 if (iret != size) {
463 if (iret == -1)
464 prterr("doread: read");
465 else
466 prt("short read: 0x%x bytes instead of 0x%x\n",
467 iret, size);
468 report_failure(141);
469 }
470 check_buffers(offset, size);
471 }
472
473
474 void
475 check_eofpage(char *s, unsigned offset, char *p, int size)
476 {
477 unsigned last_page, should_be_zero;
478
479 if (offset + size <= (file_size & ~page_mask))
480 return;
481 /*
482 * we landed in the last page of the file
483 * test to make sure the VM system provided 0's
484 * beyond the true end of the file mapping
485 * (as required by mmap def in 1996 posix 1003.1)
486 */
487 last_page = ((int)p + (offset & page_mask) + size) & ~page_mask;
488
489 for (should_be_zero = last_page + (file_size & page_mask);
490 should_be_zero < last_page + page_size;
491 should_be_zero++)
492 if (*(char *)should_be_zero) {
493 prt("Mapped %s: non-zero data past EOF (0x%llx) page offset 0x%x is 0x%04x\n",
494 s, file_size - 1, should_be_zero & page_mask,
495 short_at(should_be_zero));
496 report_failure(205);
497 }
498 }
499
500
501 void
502 domapread(unsigned offset, unsigned size)
503 {
504 unsigned pg_offset;
505 unsigned map_size;
506 char *p;
507
508 offset -= offset % readbdy;
509 if (size == 0) {
510 if (!quiet && testcalls > simulatedopcount)
511 prt("skipping zero size read\n");
512 log4(OP_SKIPPED, OP_MAPREAD, offset, size);
513 return;
514 }
515 if (size + offset > file_size) {
516 if (!quiet && testcalls > simulatedopcount)
517 prt("skipping seek/read past end of file\n");
518 log4(OP_SKIPPED, OP_MAPREAD, offset, size);
519 return;
520 }
521
522 log4(OP_MAPREAD, offset, size, 0);
523
524 if (testcalls <= simulatedopcount)
525 return;
526
527 if (!quiet && ((progressinterval &&
528 testcalls % progressinterval == 0) ||
529 (debug &&
530 (monitorstart == -1 ||
531 (offset + size > monitorstart &&
532 (monitorend == -1 || offset <= monitorend))))))
533 prt("%lu mapread\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
534 offset, offset + size - 1, size);
535
536 pg_offset = offset & page_mask;
537 map_size = pg_offset + size;
538
539 if ((p = (char *)mmap(0, map_size, PROT_READ, MAP_FILE | MAP_SHARED, fd,
540 (off_t)(offset - pg_offset))) == (char *)-1) {
541 prterr("domapread: mmap");
542 report_failure(190);
543 }
544 memcpy(temp_buf, p + pg_offset, size);
545
546 check_eofpage("Read", offset, p, size);
547
548 if (munmap(p, map_size) != 0) {
549 prterr("domapread: munmap");
550 report_failure(191);
551 }
552
553 check_buffers(offset, size);
554 }
555
556
557 void
558 gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size)
559 {
560 while (size--) {
561 good_buf[offset] = testcalls % 256;
562 if (offset % 2)
563 good_buf[offset] += original_buf[offset];
564 offset++;
565 }
566 }
567
568
569 void
570 dowrite(unsigned offset, unsigned size)
571 {
572 off_t ret;
573 unsigned iret;
574
575 offset -= offset % writebdy;
576 if (size == 0) {
577 if (!quiet && testcalls > simulatedopcount)
578 prt("skipping zero size write\n");
579 log4(OP_SKIPPED, OP_WRITE, offset, size);
580 return;
581 }
582
583 log4(OP_WRITE, offset, size, file_size);
584
585 gendata(original_buf, good_buf, offset, size);
586 if (file_size < offset + size) {
587 if (file_size < offset)
588 memset(good_buf + file_size, '\0', offset - file_size);
589 file_size = offset + size;
590 if (lite) {
591 warn("Lite file size bug in fsx!");
592 report_failure(149);
593 }
594 }
595
596 if (testcalls <= simulatedopcount)
597 return;
598
599 if (!quiet && ((progressinterval &&
600 testcalls % progressinterval == 0) ||
601 (debug &&
602 (monitorstart == -1 ||
603 (offset + size > monitorstart &&
604 (monitorend == -1 || offset <= monitorend))))))
605 prt("%lu write\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
606 offset, offset + size - 1, size);
607 ret = lseek(fd, (off_t)offset, SEEK_SET);
608 if (ret == (off_t)-1) {
609 prterr("dowrite: lseek");
610 report_failure(150);
611 }
612 iret = write(fd, good_buf + offset, size);
613 if (iret != size) {
614 if (iret == -1)
615 prterr("dowrite: write");
616 else
617 prt("short write: 0x%x bytes instead of 0x%x\n",
618 iret, size);
619 report_failure(151);
620 }
621 }
622
623
624 void
625 domapwrite(unsigned offset, unsigned size)
626 {
627 unsigned pg_offset;
628 unsigned map_size;
629 off_t cur_filesize;
630 char *p;
631
632 offset -= offset % writebdy;
633 if (size == 0) {
634 if (!quiet && testcalls > simulatedopcount)
635 prt("skipping zero size write\n");
636 log4(OP_SKIPPED, OP_MAPWRITE, offset, size);
637 return;
638 }
639 cur_filesize = file_size;
640
641 log4(OP_MAPWRITE, offset, size, 0);
642
643 gendata(original_buf, good_buf, offset, size);
644 if (file_size < offset + size) {
645 if (file_size < offset)
646 memset(good_buf + file_size, '\0', offset - file_size);
647 file_size = offset + size;
648 if (lite) {
649 warn("Lite file size bug in fsx!");
650 report_failure(200);
651 }
652 }
653
654 if (testcalls <= simulatedopcount)
655 return;
656
657 if (!quiet && ((progressinterval &&
658 testcalls % progressinterval == 0) ||
659 (debug &&
660 (monitorstart == -1 ||
661 (offset + size > monitorstart &&
662 (monitorend == -1 || offset <= monitorend))))))
663 prt("%lu mapwrite\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
664 offset, offset + size - 1, size);
665
666 if (file_size > cur_filesize) {
667 if (ftruncate(fd, file_size) == -1) {
668 prterr("domapwrite: ftruncate");
669 exit(201);
670 }
671 }
672 pg_offset = offset & page_mask;
673 map_size = pg_offset + size;
674
675 if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE,
676 MAP_FILE | MAP_SHARED, fd,
677 (off_t)(offset - pg_offset))) == (char *)-1) {
678 prterr("domapwrite: mmap");
679 report_failure(202);
680 }
681 memcpy(p + pg_offset, good_buf + offset, size);
682 if (msync(p, map_size, 0) != 0) {
683 prterr("domapwrite: msync");
684 report_failure(203);
685 }
686
687 check_eofpage("Write", offset, p, size);
688
689 if (munmap(p, map_size) != 0) {
690 prterr("domapwrite: munmap");
691 report_failure(204);
692 }
693 }
694
695
696 void
697 dotruncate(unsigned size)
698 {
699 int oldsize = file_size;
700
701 size -= size % truncbdy;
702 if (size > biggest) {
703 biggest = size;
704 if (!quiet && testcalls > simulatedopcount)
705 prt("truncating to largest ever: 0x%x\n", size);
706 }
707
708 log4(OP_TRUNCATE, size, (unsigned)file_size, 0);
709
710 if (size > file_size)
711 memset(good_buf + file_size, '\0', size - file_size);
712 file_size = size;
713
714 if (testcalls <= simulatedopcount)
715 return;
716
717 if ((progressinterval && testcalls % progressinterval == 0) ||
718 (debug && (monitorstart == -1 || monitorend == -1 ||
719 size <= monitorend)))
720 prt("%lu trunc\tfrom 0x%x to 0x%x\n", testcalls, oldsize, size);
721 if (ftruncate(fd, (off_t)size) == -1) {
722 prt("ftruncate1: %x\n", size);
723 prterr("dotruncate: ftruncate");
724 report_failure(160);
725 }
726 }
727
728
729 void
730 writefileimage()
731 {
732 ssize_t iret;
733
734 if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) {
735 prterr("writefileimage: lseek");
736 report_failure(171);
737 }
738 iret = write(fd, good_buf, file_size);
739 if ((off_t)iret != file_size) {
740 if (iret == -1)
741 prterr("writefileimage: write");
742 else
743 prt("short write: 0x%x bytes instead of 0x%llx\n",
744 iret, (unsigned long long)file_size);
745 report_failure(172);
746 }
747 if (lite ? 0 : ftruncate(fd, file_size) == -1) {
748 prt("ftruncate2: %llx\n", (unsigned long long)file_size);
749 prterr("writefileimage: ftruncate");
750 report_failure(173);
751 }
752 }
753
754
755 void
756 docloseopen(void)
757 {
758 if (testcalls <= simulatedopcount)
759 return;
760
761 if (debug)
762 prt("%lu close/open\n", testcalls);
763 if (close(fd)) {
764 prterr("docloseopen: close");
765 report_failure(180);
766 }
767 fd = open(fname, O_RDWR, 0);
768 if (fd < 0) {
769 prterr("docloseopen: open");
770 report_failure(181);
771 }
772 }
773
774
775 void
776 test(void)
777 {
778 unsigned long offset;
779 unsigned long size = maxoplen;
780 unsigned long rv = random();
781 unsigned long op = rv % (3 + !lite + mapped_writes);
782
783 /* turn off the map read if necessary */
784
785 if (op == 2 && !mapped_reads)
786 op = 0;
787
788 if (simulatedopcount > 0 && testcalls == simulatedopcount)
789 writefileimage();
790
791 testcalls++;
792
793 if (closeprob)
794 closeopen = (rv >> 3) < (1 << 28) / closeprob;
795
796 if (debugstart > 0 && testcalls >= debugstart)
797 debug = 1;
798
799 if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0)
800 prt("%lu...\n", testcalls);
801
802 /*
803 * READ: op = 0
804 * WRITE: op = 1
805 * MAPREAD: op = 2
806 * TRUNCATE: op = 3
807 * MAPWRITE: op = 3 or 4
808 */
809 if (lite ? 0 : op == 3 && style == 0) /* vanilla truncate? */
810 dotruncate(random() % maxfilelen);
811 else {
812 if (randomoplen)
813 size = random() % (maxoplen+1);
814 if (lite ? 0 : op == 3)
815 dotruncate(size);
816 else {
817 offset = random();
818 if (op == 1 || op == (lite ? 3 : 4)) {
819 offset %= maxfilelen;
820 if (offset + size > maxfilelen)
821 size = maxfilelen - offset;
822 if (op != 1)
823 domapwrite(offset, size);
824 else
825 dowrite(offset, size);
826 } else {
827 if (file_size)
828 offset %= file_size;
829 else
830 offset = 0;
831 if (offset + size > file_size)
832 size = file_size - offset;
833 if (op != 0)
834 domapread(offset, size);
835 else
836 doread(offset, size);
837 }
838 }
839 }
840 if (sizechecks && testcalls > simulatedopcount)
841 check_size();
842 if (closeopen)
843 docloseopen();
844 }
845
846
847 void
848 cleanup(sig)
849 int sig;
850 {
851 if (sig)
852 prt("signal %d\n", sig);
853 prt("testcalls = %lu\n", testcalls);
854 exit(sig);
855 }
856
857
858 void
859 usage(void)
860 {
861 fprintf(stdout, "usage: %s",
862 "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\
863 -b opnum: beginning operation number (default 1)\n\
864 -c P: 1 in P chance of file close+open at each op (default infinity)\n\
865 -d: debug output for all operations\n\
866 -l flen: the upper bound on file size (default 262144)\n\
867 -m startop:endop: monitor (print debug output) specified byte range (default 0:infinity)\n\
868 -n: no verifications of file size\n\
869 -o oplen: the upper bound on operation size (default 65536)\n\
870 -p progressinterval: debug output at specified operation interval\n\
871 -q: quieter operation\n\
872 -r readbdy: 4096 would make reads page aligned (default 1)\n\
873 -s style: 1 gives smaller truncates (default 0)\n\
874 -t truncbdy: 4096 would make truncates page aligned (default 1)\n\
875 -w writebdy: 4096 would make writes page aligned (default 1)\n\
876 -D startingop: debug output starting at specified operation\n\
877 -L: fsxLite - no file creations & no file size changes\n\
878 -N numops: total # operations to do (default infinity)\n\
879 -O: use oplen (see -o flag) for every op (default random)\n\
880 -P dirpath: save .fsxlog and .fsxgood files in dirpath (default ./)\n\
881 -S seed: for random # generator (default 1) 0 gets timestamp\n\
882 -W: mapped write operations DISabled\n\
883 -R: mapped read operations DISabled)\n\
884 fname: this filename is REQUIRED (no default)\n");
885 exit(90);
886 }
887
888
889 int
890 getnum(char *s, char **e)
891 {
892 int ret = -1;
893
894 *e = (char *) 0;
895 ret = strtol(s, e, 0);
896 if (*e)
897 switch (**e) {
898 case 'b':
899 case 'B':
900 ret *= 512;
901 *e = *e + 1;
902 break;
903 case 'k':
904 case 'K':
905 ret *= 1024;
906 *e = *e + 1;
907 break;
908 case 'm':
909 case 'M':
910 ret *= 1024*1024;
911 *e = *e + 1;
912 break;
913 case 'w':
914 case 'W':
915 ret *= 4;
916 *e = *e + 1;
917 break;
918 }
919 return (ret);
920 }
921
922
923 int
924 main(int argc, char **argv)
925 {
926 int i, ch;
927 char *endp;
928 char goodfile[1024];
929 char logfile[1024];
930
931 goodfile[0] = 0;
932 logfile[0] = 0;
933
934 page_size = getpagesize();
935 page_mask = page_size - 1;
936
937 setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
938
939 while ((ch = getopt(argc, argv, "b:c:dl:m:no:p:qr:s:t:w:D:LN:OP:RS:W"))
940 != EOF)
941 switch (ch) {
942 case 'b':
943 simulatedopcount = getnum(optarg, &endp);
944 if (!quiet)
945 fprintf(stdout, "Will begin at operation %ld\n",
946 simulatedopcount);
947 if (simulatedopcount == 0)
948 usage();
949 simulatedopcount -= 1;
950 break;
951 case 'c':
952 closeprob = getnum(optarg, &endp);
953 if (!quiet)
954 fprintf(stdout,
955 "Chance of close/open is 1 in %d\n",
956 closeprob);
957 if (closeprob <= 0)
958 usage();
959 break;
960 case 'd':
961 debug = 1;
962 break;
963 case 'l':
964 maxfilelen = getnum(optarg, &endp);
965 if (maxfilelen <= 0)
966 usage();
967 break;
968 case 'm':
969 monitorstart = getnum(optarg, &endp);
970 if (monitorstart < 0)
971 usage();
972 if (!endp || *endp++ != ':')
973 usage();
974 monitorend = getnum(endp, &endp);
975 if (monitorend < 0)
976 usage();
977 if (monitorend == 0)
978 monitorend = -1; /* aka infinity */
979 debug = 1;
980 case 'n':
981 sizechecks = 0;
982 break;
983 case 'o':
984 maxoplen = getnum(optarg, &endp);
985 if (maxoplen <= 0)
986 usage();
987 break;
988 case 'p':
989 progressinterval = getnum(optarg, &endp);
990 if (progressinterval < 0)
991 usage();
992 break;
993 case 'q':
994 quiet = 1;
995 break;
996 case 'r':
997 readbdy = getnum(optarg, &endp);
998 if (readbdy <= 0)
999 usage();
1000 break;
1001 case 's':
1002 style = getnum(optarg, &endp);
1003 if (style < 0 || style > 1)
1004 usage();
1005 break;
1006 case 't':
1007 truncbdy = getnum(optarg, &endp);
1008 if (truncbdy <= 0)
1009 usage();
1010 break;
1011 case 'w':
1012 writebdy = getnum(optarg, &endp);
1013 if (writebdy <= 0)
1014 usage();
1015 break;
1016 case 'D':
1017 debugstart = getnum(optarg, &endp);
1018 if (debugstart < 1)
1019 usage();
1020 break;
1021 case 'L':
1022 lite = 1;
1023 break;
1024 case 'N':
1025 numops = getnum(optarg, &endp);
1026 if (numops < 0)
1027 usage();
1028 break;
1029 case 'O':
1030 randomoplen = 0;
1031 break;
1032 case 'P':
1033 strncpy(goodfile, optarg, sizeof(goodfile));
1034 strcat(goodfile, "/");
1035 strncpy(logfile, optarg, sizeof(logfile));
1036 strcat(logfile, "/");
1037 break;
1038 case 'R':
1039 mapped_reads = 0;
1040 break;
1041 case 'S':
1042 seed = getnum(optarg, &endp);
1043 if (seed == 0)
1044 seed = time(0) % 10000;
1045 if (!quiet)
1046 fprintf(stdout, "Seed set to %d\n", seed);
1047 if (seed < 0)
1048 usage();
1049 break;
1050 case 'W':
1051 mapped_writes = 0;
1052 if (!quiet)
1053 fprintf(stdout, "mapped writes DISABLED\n");
1054 break;
1055
1056 default:
1057 usage();
1058 /* NOTREACHED */
1059 }
1060 argc -= optind;
1061 argv += optind;
1062 if (argc != 1)
1063 usage();
1064 fname = argv[0];
1065
1066 signal(SIGHUP, cleanup);
1067 signal(SIGINT, cleanup);
1068 signal(SIGPIPE, cleanup);
1069 signal(SIGALRM, cleanup);
1070 signal(SIGTERM, cleanup);
1071 signal(SIGXCPU, cleanup);
1072 signal(SIGXFSZ, cleanup);
1073 signal(SIGVTALRM, cleanup);
1074 signal(SIGUSR1, cleanup);
1075 signal(SIGUSR2, cleanup);
1076
1077 initstate(seed, state, 256);
1078 setstate(state);
1079 fd = open(fname, O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC), 0666);
1080 if (fd < 0) {
1081 prterr(fname);
1082 exit(91);
1083 }
1084 strncat(goodfile, fname, 256);
1085 strcat (goodfile, ".fsxgood");
1086 fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666);
1087 if (fsxgoodfd < 0) {
1088 prterr(goodfile);
1089 exit(92);
1090 }
1091 strncat(logfile, fname, 256);
1092 strcat (logfile, ".fsxlog");
1093 fsxlogf = fopen(logfile, "w");
1094 if (fsxlogf == NULL) {
1095 prterr(logfile);
1096 exit(93);
1097 }
1098 if (lite) {
1099 off_t ret;
1100 file_size = maxfilelen = lseek(fd, (off_t)0, SEEK_END);
1101 if (file_size == (off_t)-1) {
1102 prterr(fname);
1103 warn("main: lseek eof");
1104 exit(94);
1105 }
1106 ret = lseek(fd, (off_t)0, SEEK_SET);
1107 if (ret == (off_t)-1) {
1108 prterr(fname);
1109 warn("main: lseek 0");
1110 exit(95);
1111 }
1112 }
1113 original_buf = (char *) malloc(maxfilelen);
1114 for (i = 0; i < maxfilelen; i++)
1115 original_buf[i] = random() % 256;
1116 good_buf = (char *) malloc(maxfilelen);
1117 memset(good_buf, '\0', maxfilelen);
1118 temp_buf = (char *) malloc(maxoplen);
1119 memset(temp_buf, '\0', maxoplen);
1120 if (lite) { /* zero entire existing file */
1121 ssize_t written;
1122
1123 written = write(fd, good_buf, (size_t)maxfilelen);
1124 if (written != maxfilelen) {
1125 if (written == -1) {
1126 prterr(fname);
1127 warn("main: error on write");
1128 } else
1129 warn("main: short write, 0x%x bytes instead of 0x%x\n",
1130 (unsigned)written, maxfilelen);
1131 exit(98);
1132 }
1133 } else
1134 check_trunc_hack();
1135
1136 while (numops == -1 || numops--)
1137 test();
1138
1139 if (close(fd)) {
1140 prterr("close");
1141 report_failure(99);
1142 }
1143 prt("All operations completed A-OK!\n");
1144
1145 exit(0);
1146 return 0;
1147 }
1148
DragonFly vkernel multiprocessor port