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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23 * Author: Avadis Tevanian, Jr.
25 * File system exerciser.
27 * Rewrite and enhancements 1998-2001 Conrad Minshall -- conrad@mac.com
29 * Various features from Joe Sokol, Pat Dirks, and Clark Warner.
31 * Small changes to work under Linux -- davej@suse.de
33 * Sundry porting patches from Guy Harris 12/2001
35 * Checks for mmap last-page zero fill.
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 13:37:14 drhodus Exp $
42 #include <sys/types.h>
45 # include <sys/param.h>
64 #define NUMPRINTCOLUMNS 32 /* # columns of data to print on each line */
67 * A log entry is an operation and a bunch of arguments.
77 struct log_entry oplog[LOGSIZE]; /* the log */
78 int logptr = 0; /* current position in log */
79 int logcount = 0; /* total ops */
88 #define OP_CLOSEOPEN 4
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 */
105 unsigned long testcalls = 0; /* calls to function "test" */
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 */
129 FILE * fsxlogf = NULL;
135 vwarnc(code, fmt, ap)
140 fprintf(stderr, "fsx: ");
142 vfprintf(stderr, fmt, ap);
143 fprintf(stderr, ": ");
145 fprintf(stderr, "%s\n", strerror(code));
150 warn(const char * fmt, ...)
154 vwarnc(errno, fmt, ap);
165 vfprintf(stdout, fmt, args);
167 vfprintf(fsxlogf, fmt, args);
174 prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno));
179 log4(int operation, int arg0, int arg1, int arg2)
181 struct log_entry *le;
184 le->operation = operation;
186 le->operation = ~ le->operation;
192 if (logptr >= LOGSIZE)
201 struct log_entry *lp;
203 prt("LOG DUMP (%d total operations):\n", logcount);
204 if (logcount < LOGSIZE) {
211 for ( ; count > 0; count--) {
214 opnum = i+1 + (logcount/LOGSIZE)*LOGSIZE;
215 prt("%d(%d mod 256): ", opnum, opnum%256);
217 if ((closeopen = lp->operation < 0))
218 lp->operation = ~ lp->operation;
220 switch (lp->operation) {
222 prt("MAPREAD\t0x%x thru 0x%x\t(0x%x bytes)",
223 lp->args[0], lp->args[0] + lp->args[1] - 1,
225 if (badoff >= lp->args[0] && badoff <
226 lp->args[0] + lp->args[1])
230 prt("MAPWRITE 0x%x thru 0x%x\t(0x%x bytes)",
231 lp->args[0], lp->args[0] + lp->args[1] - 1,
233 if (badoff >= lp->args[0] && badoff <
234 lp->args[0] + lp->args[1])
238 prt("READ\t0x%x thru 0x%x\t(0x%x bytes)",
239 lp->args[0], lp->args[0] + lp->args[1] - 1,
241 if (badoff >= lp->args[0] &&
242 badoff < lp->args[0] + lp->args[1])
246 prt("WRITE\t0x%x thru 0x%x\t(0x%x bytes)",
247 lp->args[0], lp->args[0] + lp->args[1] - 1,
249 if (lp->args[0] > lp->args[2])
251 else if (lp->args[0] + lp->args[1] > lp->args[2])
253 if ((badoff >= lp->args[0] || badoff >=lp->args[2]) &&
254 badoff < lp->args[0] + lp->args[1])
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])
266 prt("SKIPPED (no operation)");
269 prt("BOGUS LOG ENTRY (operation code = %d)!",
273 prt("\n\t\tCLOSE/OPEN");
283 save_buffer(char *buffer, off_t bufferlength, int fd)
286 ssize_t byteswritten;
288 if (fd <= 0 || bufferlength == 0)
291 if (bufferlength > SSIZE_MAX) {
292 prt("fsx flaw: overflow in save_buffer\n");
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;
306 ret = lseek(fd, (off_t)0, SEEK_SET);
307 if (ret == (off_t)-1)
308 prterr("save_buffer: lseek 0");
310 byteswritten = write(fd, buffer, (size_t)bufferlength);
311 if (byteswritten != bufferlength) {
312 if (byteswritten == -1)
313 prterr("save_buffer write");
315 warn("save_buffer: short write, 0x%x bytes instead of 0x%llx\n",
316 (unsigned)byteswritten,
317 (unsigned long long)bufferlength);
323 report_failure(int status)
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",
340 #define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \
341 *(((unsigned char *)(cp)) + 1)))
344 check_buffers(unsigned offset, unsigned size)
352 if (memcmp(good_buf + offset, temp_buf, size) != 0) {
353 prt("READ BAD DATA: offset = 0x%x, size = 0x%x\n",
355 prt("OFFSET\tGOOD\tBAD\tRANGE\n");
357 c = good_buf[offset];
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];
376 prt("operation# (mod 256) for the bad data may be %u\n", ((unsigned)op & 0xff));
378 prt("operation# (mod 256) for the bad data unknown, check HOLE and EXTEND ops\n");
380 prt("????????????????\n");
392 if (fstat(fd, &statbuf)) {
393 prterr("check_size: fstat");
394 statbuf.st_size = -1;
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);
408 check_trunc_hack(void)
412 ftruncate(fd, (off_t)0);
413 ftruncate(fd, (off_t)100000);
415 if (statbuf.st_size != (off_t)100000) {
416 prt("no extend on truncate! not posix!\n");
419 ftruncate(fd, (off_t)0);
424 doread(unsigned offset, unsigned size)
429 offset -= offset % readbdy;
431 if (!quiet && testcalls > simulatedopcount)
432 prt("skipping zero size read\n");
433 log4(OP_SKIPPED, OP_READ, offset, size);
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);
443 log4(OP_READ, offset, size, 0);
445 if (testcalls <= simulatedopcount)
448 if (!quiet && ((progressinterval &&
449 testcalls % progressinterval == 0) ||
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");
461 iret = read(fd, temp_buf, size);
464 prterr("doread: read");
466 prt("short read: 0x%x bytes instead of 0x%x\n",
470 check_buffers(offset, size);
475 check_eofpage(char *s, unsigned offset, char *p, int size)
477 unsigned last_page, should_be_zero;
479 if (offset + size <= (file_size & ~page_mask))
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)
487 last_page = ((int)p + (offset & page_mask) + size) & ~page_mask;
489 for (should_be_zero = last_page + (file_size & page_mask);
490 should_be_zero < last_page + page_size;
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));
502 domapread(unsigned offset, unsigned size)
508 offset -= offset % readbdy;
510 if (!quiet && testcalls > simulatedopcount)
511 prt("skipping zero size read\n");
512 log4(OP_SKIPPED, OP_MAPREAD, offset, size);
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);
522 log4(OP_MAPREAD, offset, size, 0);
524 if (testcalls <= simulatedopcount)
527 if (!quiet && ((progressinterval &&
528 testcalls % progressinterval == 0) ||
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);
536 pg_offset = offset & page_mask;
537 map_size = pg_offset + size;
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");
544 memcpy(temp_buf, p + pg_offset, size);
546 check_eofpage("Read", offset, p, size);
548 if (munmap(p, map_size) != 0) {
549 prterr("domapread: munmap");
553 check_buffers(offset, size);
558 gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size)
561 good_buf[offset] = testcalls % 256;
563 good_buf[offset] += original_buf[offset];
570 dowrite(unsigned offset, unsigned size)
575 offset -= offset % writebdy;
577 if (!quiet && testcalls > simulatedopcount)
578 prt("skipping zero size write\n");
579 log4(OP_SKIPPED, OP_WRITE, offset, size);
583 log4(OP_WRITE, offset, size, file_size);
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;
591 warn("Lite file size bug in fsx!");
596 if (testcalls <= simulatedopcount)
599 if (!quiet && ((progressinterval &&
600 testcalls % progressinterval == 0) ||
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");
612 iret = write(fd, good_buf + offset, size);
615 prterr("dowrite: write");
617 prt("short write: 0x%x bytes instead of 0x%x\n",
625 domapwrite(unsigned offset, unsigned size)
632 offset -= offset % writebdy;
634 if (!quiet && testcalls > simulatedopcount)
635 prt("skipping zero size write\n");
636 log4(OP_SKIPPED, OP_MAPWRITE, offset, size);
639 cur_filesize = file_size;
641 log4(OP_MAPWRITE, offset, size, 0);
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;
649 warn("Lite file size bug in fsx!");
654 if (testcalls <= simulatedopcount)
657 if (!quiet && ((progressinterval &&
658 testcalls % progressinterval == 0) ||
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);
666 if (file_size > cur_filesize) {
667 if (ftruncate(fd, file_size) == -1) {
668 prterr("domapwrite: ftruncate");
672 pg_offset = offset & page_mask;
673 map_size = pg_offset + size;
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");
681 memcpy(p + pg_offset, good_buf + offset, size);
682 if (msync(p, map_size, 0) != 0) {
683 prterr("domapwrite: msync");
687 check_eofpage("Write", offset, p, size);
689 if (munmap(p, map_size) != 0) {
690 prterr("domapwrite: munmap");
697 dotruncate(unsigned size)
699 int oldsize = file_size;
701 size -= size % truncbdy;
702 if (size > biggest) {
704 if (!quiet && testcalls > simulatedopcount)
705 prt("truncating to largest ever: 0x%x\n", size);
708 log4(OP_TRUNCATE, size, (unsigned)file_size, 0);
710 if (size > file_size)
711 memset(good_buf + file_size, '\0', size - file_size);
714 if (testcalls <= simulatedopcount)
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");
734 if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) {
735 prterr("writefileimage: lseek");
738 iret = write(fd, good_buf, file_size);
739 if ((off_t)iret != file_size) {
741 prterr("writefileimage: write");
743 prt("short write: 0x%x bytes instead of 0x%llx\n",
744 iret, (unsigned long long)file_size);
747 if (lite ? 0 : ftruncate(fd, file_size) == -1) {
748 prt("ftruncate2: %llx\n", (unsigned long long)file_size);
749 prterr("writefileimage: ftruncate");
758 if (testcalls <= simulatedopcount)
762 prt("%lu close/open\n", testcalls);
764 prterr("docloseopen: close");
767 fd = open(fname, O_RDWR, 0);
769 prterr("docloseopen: open");
778 unsigned long offset;
779 unsigned long size = maxoplen;
780 unsigned long rv = random();
781 unsigned long op = rv % (3 + !lite + mapped_writes);
783 /* turn off the map read if necessary */
785 if (op == 2 && !mapped_reads)
788 if (simulatedopcount > 0 && testcalls == simulatedopcount)
794 closeopen = (rv >> 3) < (1 << 28) / closeprob;
796 if (debugstart > 0 && testcalls >= debugstart)
799 if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0)
800 prt("%lu...\n", testcalls);
807 * MAPWRITE: op = 3 or 4
809 if (lite ? 0 : op == 3 && style == 0) /* vanilla truncate? */
810 dotruncate(random() % maxfilelen);
813 size = random() % (maxoplen+1);
814 if (lite ? 0 : op == 3)
818 if (op == 1 || op == (lite ? 3 : 4)) {
819 offset %= maxfilelen;
820 if (offset + size > maxfilelen)
821 size = maxfilelen - offset;
823 domapwrite(offset, size);
825 dowrite(offset, size);
831 if (offset + size > file_size)
832 size = file_size - offset;
834 domapread(offset, size);
836 doread(offset, size);
840 if (sizechecks && testcalls > simulatedopcount)
852 prt("signal %d\n", sig);
853 prt("testcalls = %lu\n", testcalls);
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");
890 getnum(char *s, char **e)
895 ret = strtol(s, e, 0);
924 main(int argc, char **argv)
934 page_size = getpagesize();
935 page_mask = page_size - 1;
937 setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
939 while ((ch = getopt(argc, argv, "b:c:dl:m:no:p:qr:s:t:w:D:LN:OP:RS:W"))
943 simulatedopcount = getnum(optarg, &endp);
945 fprintf(stdout, "Will begin at operation %ld\n",
947 if (simulatedopcount == 0)
949 simulatedopcount -= 1;
952 closeprob = getnum(optarg, &endp);
955 "Chance of close/open is 1 in %d\n",
964 maxfilelen = getnum(optarg, &endp);
969 monitorstart = getnum(optarg, &endp);
970 if (monitorstart < 0)
972 if (!endp || *endp++ != ':')
974 monitorend = getnum(endp, &endp);
978 monitorend = -1; /* aka infinity */
984 maxoplen = getnum(optarg, &endp);
989 progressinterval = getnum(optarg, &endp);
990 if (progressinterval < 0)
997 readbdy = getnum(optarg, &endp);
1002 style = getnum(optarg, &endp);
1003 if (style < 0 || style > 1)
1007 truncbdy = getnum(optarg, &endp);
1012 writebdy = getnum(optarg, &endp);
1017 debugstart = getnum(optarg, &endp);
1025 numops = getnum(optarg, &endp);
1033 strncpy(goodfile, optarg, sizeof(goodfile));
1034 strcat(goodfile, "/");
1035 strncpy(logfile, optarg, sizeof(logfile));
1036 strcat(logfile, "/");
1042 seed = getnum(optarg, &endp);
1044 seed = time(0) % 10000;
1046 fprintf(stdout, "Seed set to %d\n", seed);
1053 fprintf(stdout, "mapped writes DISABLED\n");
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);
1077 initstate(seed, state, 256);
1079 fd = open(fname, O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC), 0666);
1084 strncat(goodfile, fname, 256);
1085 strcat (goodfile, ".fsxgood");
1086 fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666);
1087 if (fsxgoodfd < 0) {
1091 strncat(logfile, fname, 256);
1092 strcat (logfile, ".fsxlog");
1093 fsxlogf = fopen(logfile, "w");
1094 if (fsxlogf == NULL) {
1100 file_size = maxfilelen = lseek(fd, (off_t)0, SEEK_END);
1101 if (file_size == (off_t)-1) {
1103 warn("main: lseek eof");
1106 ret = lseek(fd, (off_t)0, SEEK_SET);
1107 if (ret == (off_t)-1) {
1109 warn("main: lseek 0");
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 */
1123 written = write(fd, good_buf, (size_t)maxfilelen);
1124 if (written != maxfilelen) {
1125 if (written == -1) {
1127 warn("main: error on write");
1129 warn("main: short write, 0x%x bytes instead of 0x%x\n",
1130 (unsigned)written, maxfilelen);
1136 while (numops == -1 || numops--)
1143 prt("All operations completed A-OK!\n");