Add a missing uio_td assignment (that unionfs needs).
[dragonfly.git] / test / stress / fsx / fsx.c
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/test/stress/fsx/fsx.c,v 1.1 2003/10/11 13:37:14 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