2 * Copyright (c) 1998-2001 Apple Computer, Inc. All rights reserved.
4 * @APPLE_LICENSE_HEADER_START@
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
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22 * WARNING--WARNING--WARNING
23 * This is not the original fsx.c. It has been modified to run with
24 * yaffs direct. Seek out the original fsx.c if you want to do anything
30 * Author: Avadis Tevanian, Jr.
32 * File system exerciser.
34 * Rewrite and enhancements 1998-2001 Conrad Minshall -- conrad@mac.com
36 * Various features from Joe Sokol, Pat Dirks, and Clark Warner.
38 * Small changes to work under Linux -- davej@suse.de
40 * Sundry porting patches from Guy Harris 12/2001
42 * Checks for mmap last-page zero fill.
44 * Modified heavily by Charles Manning to exercise via the
45 * yaffs direct interface.
49 #include "yaffs_fsx.h"
51 #include <sys/types.h>
54 # include <sys/param.h>
76 #define NUMPRINTCOLUMNS 32 /* # columns of data to print on each line */
79 * A log entry is an operation and a bunch of arguments.
89 struct log_entry oplog[LOGSIZE]; /* the log */
90 int logptr = 0; /* current position in log */
91 int logcount = 0; /* total ops */
100 #define OP_CLOSEOPEN 4
102 #define OP_MAPWRITE 6
108 char *original_buf; /* a pointer to the original data */
109 char *good_buf; /* a pointer to the correct data */
110 char *temp_buf; /* a pointer to the current data */
112 char fname[200]; /* name of our test file */
113 char mount_name[200];
115 int fd; /* fd for our test file */
120 unsigned long testcalls = 0; /* calls to function "test" */
122 unsigned long simulatedopcount = 0; /* -b flag */
123 int closeprob = 0; /* -c flag */
124 int debug = 0; /* -d flag */
125 unsigned long debugstart = 0; /* -D flag */
126 unsigned long maxfilelen = 256 * 1024; /* -l flag */
127 int sizechecks = 1; /* -n flag disables them */
128 int maxoplen = 64 * 1024; /* -o flag */
129 int quiet = 0; /* -q flag */
130 unsigned long progressinterval = 0; /* -p flag */
131 int readbdy = 1; /* -r flag */
132 int style = 0; /* -s flag */
133 int truncbdy = 1; /* -t flag */
134 int writebdy = 1; /* -w flag */
135 long monitorstart = -1; /* -m flag */
136 long monitorend = -1; /* -m flag */
137 int lite = 0; /* -L flag */
138 int randomoplen = 1; /* -O flag disables it */
139 int seed = 1; /* -S flag */
141 int mapped_writes = 0; /* yaffs direct does not support mmapped files */
142 int mapped_reads = 0;
145 FILE * fsxlogf = NULL;
153 printf("fsx wanted to exit with %d\n",x);
162 vwarnc(code, fmt, ap)
167 fprintf(stderr, "fsx: ");
169 vfprintf(stderr, fmt, ap);
170 fprintf(stderr, ": ");
172 fprintf(stderr, "%s\n", strerror(code));
177 warn(const char * fmt, ...)
181 vwarnc(errno, fmt, ap);
192 vfprintf(stdout, fmt, args);
194 vfprintf(fsxlogf, fmt, args);
201 prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno));
206 log4(int operation, int arg0, int arg1, int arg2)
208 struct log_entry *le;
211 le->operation = operation;
213 le->operation = ~ le->operation;
219 if (logptr >= LOGSIZE)
228 struct log_entry *lp;
230 prt("LOG DUMP (%d total operations):\n", logcount);
231 if (logcount < LOGSIZE) {
238 for ( ; count > 0; count--) {
241 opnum = i+1 + (logcount/LOGSIZE)*LOGSIZE;
242 prt("%d(%d mod 256): ", opnum, opnum%256);
244 if ((closeopen = lp->operation < 0))
245 lp->operation = ~ lp->operation;
247 switch (lp->operation) {
249 prt("MAPREAD\t0x%x thru 0x%x\t(0x%x bytes)",
250 lp->args[0], lp->args[0] + lp->args[1] - 1,
252 if (badoff >= lp->args[0] && badoff <
253 lp->args[0] + lp->args[1])
257 prt("MAPWRITE 0x%x thru 0x%x\t(0x%x bytes)",
258 lp->args[0], lp->args[0] + lp->args[1] - 1,
260 if (badoff >= lp->args[0] && badoff <
261 lp->args[0] + lp->args[1])
265 prt("READ\t0x%x thru 0x%x\t(0x%x bytes)",
266 lp->args[0], lp->args[0] + lp->args[1] - 1,
268 if (badoff >= lp->args[0] &&
269 badoff < lp->args[0] + lp->args[1])
273 prt("WRITE\t0x%x thru 0x%x\t(0x%x bytes)",
274 lp->args[0], lp->args[0] + lp->args[1] - 1,
276 if (lp->args[0] > lp->args[2])
278 else if (lp->args[0] + lp->args[1] > lp->args[2])
280 if ((badoff >= lp->args[0] || badoff >=lp->args[2]) &&
281 badoff < lp->args[0] + lp->args[1])
285 down = lp->args[0] < lp->args[1];
286 prt("TRUNCATE %s\tfrom 0x%x to 0x%x",
287 down ? "DOWN" : "UP", lp->args[1], lp->args[0]);
288 if (badoff >= lp->args[!down] &&
289 badoff < lp->args[!!down])
293 prt("SKIPPED (no operation)");
296 prt("BOGUS LOG ENTRY (operation code = %d)!",
300 prt("\n\t\tCLOSE/OPEN");
310 save_buffer(char *buffer, off_t bufferlength, int fd)
313 ssize_t byteswritten;
315 if (fd <= 0 || bufferlength == 0)
318 if (bufferlength > SSIZE_MAX) {
319 prt("fsx flaw: overflow in save_buffer\n");
323 off_t size_by_seek = yaffs_lseek(fd, (off_t)0, SEEK_END);
324 if (size_by_seek == (off_t)-1)
325 prterr("save_buffer: lseek eof");
326 else if (bufferlength > size_by_seek) {
327 warn("save_buffer: .fsxgood file too short... will save 0x%llx bytes instead of 0x%llx\n", (unsigned long long)size_by_seek,
328 (unsigned long long)bufferlength);
329 bufferlength = size_by_seek;
333 ret = yaffs_lseek(fd, (off_t)0, SEEK_SET);
334 if (ret == (off_t)-1)
335 prterr("save_buffer: lseek 0");
337 byteswritten = yaffs_write(fd, buffer, (size_t)bufferlength);
338 if (byteswritten != bufferlength) {
339 if (byteswritten == -1)
340 prterr("save_buffer write");
342 warn("save_buffer: short write, 0x%x bytes instead of 0x%llx\n",
343 (unsigned)byteswritten,
344 (unsigned long long)bufferlength);
350 report_failure(int status)
356 save_buffer(good_buf, file_size, fsxgoodfd);
357 prt("Correct content saved for comparison\n");
358 prt("(maybe hexdump \"%s\" vs \"%s.fsxgood\")\n",
363 prt("Exiting with %d\n",status);
368 #define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \
369 *(((unsigned char *)(cp)) + 1)))
372 check_buffers(unsigned offset, unsigned size)
380 if (memcmp(good_buf + offset, temp_buf, size) != 0) {
381 prt("READ BAD DATA: offset = 0x%x, size = 0x%x\n",
383 prt("OFFSET\tGOOD\tBAD\tRANGE\n");
385 c = good_buf[offset];
389 bad = short_at(&temp_buf[i]);
390 prt("0x%5x\t0x%04x\t0x%04x", offset,
391 short_at(&good_buf[offset]), bad);
392 op = temp_buf[offset & 1 ? i+1 : i];
404 prt("operation# (mod 256) for the bad data may be %u\n", ((unsigned)op & 0xff));
406 prt("operation# (mod 256) for the bad data unknown, check HOLE and EXTEND ops\n");
408 prt("????????????????\n");
417 struct yaffs_stat statbuf;
420 if (yaffs_fstat(fd, &statbuf)) {
421 prterr("check_size: fstat");
422 statbuf.st_size = -1;
424 size_by_seek = yaffs_lseek(fd, (off_t)0, SEEK_END);
425 if (file_size != statbuf.st_size || file_size != size_by_seek) {
426 prt("Size error: expected 0x%llx stat 0x%llx seek 0x%llx\n",
427 (unsigned long long)file_size,
428 (unsigned long long)statbuf.st_size,
429 (unsigned long long)size_by_seek);
436 check_trunc_hack(void)
438 struct yaffs_stat statbuf;
440 yaffs_ftruncate(fd, (off_t)0);
441 yaffs_ftruncate(fd, (off_t)100000);
442 yaffs_fstat(fd, &statbuf);
443 if (statbuf.st_size != (off_t)100000) {
444 prt("no extend on truncate! not posix!\n");
447 yaffs_ftruncate(fd, (off_t)0);
452 doread(unsigned offset, unsigned size)
457 offset -= offset % readbdy;
459 if (!quiet && testcalls > simulatedopcount)
460 prt("skipping zero size read\n");
461 log4(OP_SKIPPED, OP_READ, offset, size);
464 if (size + offset > file_size) {
465 if (!quiet && testcalls > simulatedopcount)
466 prt("skipping seek/read past end of file\n");
467 log4(OP_SKIPPED, OP_READ, offset, size);
471 log4(OP_READ, offset, size, 0);
473 if (testcalls <= simulatedopcount)
476 if (!quiet && ((progressinterval &&
477 testcalls % progressinterval == 0) ||
479 (monitorstart == -1 ||
480 (offset + size > monitorstart &&
481 (monitorend == -1 || offset <= monitorend))))))
482 prt("%lu read\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
483 offset, offset + size - 1, size);
484 ret = yaffs_lseek(fd, (off_t)offset, SEEK_SET);
485 if (ret == (off_t)-1) {
486 prterr("doread: lseek");
489 iret = yaffs_read(fd, temp_buf, size);
492 prterr("doread: read");
494 prt("short read: 0x%x bytes instead of 0x%x\n",
498 check_buffers(offset, size);
506 gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size)
509 good_buf[offset] = testcalls % 256;
511 good_buf[offset] += original_buf[offset];
518 dowrite(unsigned offset, unsigned size)
523 offset -= offset % writebdy;
525 if (!quiet && testcalls > simulatedopcount)
526 prt("skipping zero size write\n");
527 log4(OP_SKIPPED, OP_WRITE, offset, size);
531 log4(OP_WRITE, offset, size, file_size);
533 gendata(original_buf, good_buf, offset, size);
534 if (file_size < offset + size) {
535 if (file_size < offset)
536 memset(good_buf + file_size, '\0', offset - file_size);
537 file_size = offset + size;
539 warn("Lite file size bug in fsx!");
544 if (testcalls <= simulatedopcount)
547 if (!quiet && ((progressinterval &&
548 testcalls % progressinterval == 0) ||
550 (monitorstart == -1 ||
551 (offset + size > monitorstart &&
552 (monitorend == -1 || offset <= monitorend))))))
553 prt("%lu write\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
554 offset, offset + size - 1, size);
555 ret = yaffs_lseek(fd, (off_t)offset, SEEK_SET);
556 if (ret == (off_t)-1) {
557 prterr("dowrite: lseek");
560 iret = yaffs_write(fd, good_buf + offset, size);
563 prterr("dowrite: write");
565 prt("short write: 0x%x bytes instead of 0x%x\n",
574 dotruncate(unsigned size)
576 int oldsize = file_size;
578 size -= size % truncbdy;
579 if (size > biggest) {
581 if (!quiet && testcalls > simulatedopcount)
582 prt("truncating to largest ever: 0x%x\n", size);
585 log4(OP_TRUNCATE, size, (unsigned)file_size, 0);
587 if (size > file_size)
588 memset(good_buf + file_size, '\0', size - file_size);
591 if (testcalls <= simulatedopcount)
594 if ((progressinterval && testcalls % progressinterval == 0) ||
595 (debug && (monitorstart == -1 || monitorend == -1 ||
596 size <= monitorend)))
597 prt("%lu trunc\tfrom 0x%x to 0x%x\n", testcalls, oldsize, size);
598 if (yaffs_ftruncate(fd, (off_t)size) == -1) {
599 prt("ftruncate1: %x\n", size);
600 prterr("dotruncate: ftruncate");
611 if (yaffs_lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) {
612 prterr("writefileimage: lseek");
615 iret = yaffs_write(fd, good_buf, file_size);
616 if ((off_t)iret != file_size) {
618 prterr("writefileimage: write");
620 prt("short write: 0x%x bytes instead of 0x%llx\n",
621 iret, (unsigned long long)file_size);
624 if (lite ? 0 : yaffs_ftruncate(fd, file_size) == -1) {
625 prt("ftruncate2: %llx\n", (unsigned long long)file_size);
626 prterr("writefileimage: ftruncate");
635 if (testcalls <= simulatedopcount)
639 prt("%lu close/open\n", testcalls);
640 if (yaffs_close(fd)) {
641 prterr("docloseopen: close");
644 fd = yaffs_open(fname, O_RDWR, 0);
646 prterr("docloseopen: open");
653 yaffs_fsx_do_op(void)
655 unsigned long offset;
656 unsigned long size = maxoplen;
657 unsigned long rv = random();
658 unsigned long op = rv % (3 + !lite + mapped_writes);
660 /* turn off the map read if necessary */
662 if (op == 2 && !mapped_reads)
665 if (simulatedopcount > 0 && testcalls == simulatedopcount)
671 closeopen = (rv >> 3) < (1 << 28) / closeprob;
673 if (debugstart > 0 && testcalls >= debugstart)
676 if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0)
677 prt("%lu...\n", testcalls);
684 * MAPWRITE: op = 3 or 4
686 if (lite ? 0 : op == 3 && (style & 1) == 0) /* vanilla truncate? */
687 dotruncate(random() % maxfilelen);
690 size = random() % (maxoplen+1);
691 if (lite ? 0 : op == 3)
695 if (op == 1 || op == (lite ? 3 : 4)) {
696 offset %= maxfilelen;
697 if (offset + size > maxfilelen)
698 size = maxfilelen - offset;
699 dowrite(offset, size);
705 if (offset + size > file_size)
706 size = file_size - offset;
707 doread(offset, size);
711 if (sizechecks && testcalls > simulatedopcount)
723 prt("signal %d\n", sig);
724 prt("testcalls = %lu\n", testcalls);
732 fprintf(stdout, "usage: %s",
733 "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\
734 -b opnum: beginning operation number (default 1)\n\
735 -c P: 1 in P chance of file close+open at each op (default infinity)\n\
736 -d: debug output for all operations\n\
737 -l flen: the upper bound on file size (default 262144)\n\
738 -m startop:endop: monitor (print debug output) specified byte range (default 0:infinity)\n\
739 -n: no verifications of file size\n\
740 -o oplen: the upper bound on operation size (default 65536)\n\
741 -p progressinterval: debug output at specified operation interval\n\
742 -q: quieter operation\n\
743 -r readbdy: 4096 would make reads page aligned (default 1)\n\
744 -s style: 1 gives smaller truncates (default 0)\n\
745 -t truncbdy: 4096 would make truncates page aligned (default 1)\n\
746 -w writebdy: 4096 would make writes page aligned (default 1)\n\
747 -D startingop: debug output starting at specified operation\n\
748 -L: fsxLite - no file creations & no file size changes\n\
749 -N numops: total # operations to do (default infinity)\n\
750 -O: use oplen (see -o flag) for every op (default random)\n\
751 -P dirpath: save .fsxlog and .fsxgood files in dirpath (default ./)\n\
752 -S seed: for random # generator (default 1) 0 gets timestamp\n\
753 fname: this filename is REQUIRED (no default)\n");
759 getnum(char *s, char **e)
764 ret = strtol(s, e, 0);
793 extern int random_seed;
794 extern int simulate_power_failure;
797 int mounted_by_fsx = 0;
800 yaffs_fsx_init(const char *mount_pt)
807 page_size = getpagesize();
808 page_mask = page_size - 1;
810 setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
812 strcpy(mount_name,mount_pt);
813 strcpy(fname,mount_name);
814 strcat(fname,"/fsxdata");
817 signal(SIGHUP, cleanup);
818 signal(SIGINT, cleanup);
819 signal(SIGPIPE, cleanup);
820 signal(SIGALRM, cleanup);
821 signal(SIGTERM, cleanup);
822 signal(SIGXCPU, cleanup);
823 signal(SIGXFSZ, cleanup);
824 signal(SIGVTALRM, cleanup);
825 signal(SIGUSR1, cleanup);
826 signal(SIGUSR2, cleanup);
829 initstate(seed, state, 256);
831 fd = yaffs_open(fname, O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC), 0666);
836 strncat(goodfile, fname, 256);
837 strcat (goodfile, ".fsxgood");
838 fsxgoodfd = yaffs_open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666);
843 strncat(logfile, "fsx", 256);
844 strcat (logfile, ".fsxlog");
845 fsxlogf = fopen(logfile, "w");
846 if (fsxlogf == NULL) {
852 file_size = maxfilelen = yaffs_lseek(fd, (off_t)0, SEEK_END);
853 if (file_size == (off_t)-1) {
855 warn("main: lseek eof");
858 ret = yaffs_lseek(fd, (off_t)0, SEEK_SET);
859 if (ret == (off_t)-1) {
861 warn("main: lseek 0");
865 original_buf = (char *) malloc(maxfilelen);
866 for (i = 0; i < maxfilelen; i++)
867 original_buf[i] = random() % 256;
868 good_buf = (char *) malloc(maxfilelen);
869 memset(good_buf, '\0', maxfilelen);
870 temp_buf = (char *) malloc(maxoplen);
871 memset(temp_buf, '\0', maxoplen);
872 if (lite) { /* zero entire existing file */
875 written = yaffs_write(fd, good_buf, (size_t)maxfilelen);
876 if (written != maxfilelen) {
879 warn("main: error on write");
881 warn("main: short write, 0x%x bytes instead of 0x%x\n",
882 (unsigned)written, maxfilelen);
892 int yaffs_fsx_complete(void)
894 if (yaffs_close(fd)) {
899 yaffs_close(fsxgoodfd);
901 prt("All operations completed A-OK!\n");
908 yaffs_fsx_main(const char *mount_pt, int numops)
910 yaffs_fsx_init(mount_pt);
911 while (numops == -1 || numops--)
913 yaffs_fsx_complete();