Charles Manning wrote:
> On Monday 01 August 2005 11:04, Luc Van Oostenryck wrote:
>>- There is a problem related to truncation and rewrite of files but I
>> have not yet investigated this one.
>> May be related to not using USE_HEADER_SIZE ???
>
>
> If you can make a test case I will investigate further.
>
>
Yesterday, it's was 100% reproductible at the very beginning of the test,
but now it happen much later and not at the same place (no more just after a truncate).
I didn't had the time to really investigate it.
The test went good on nandemul2k (but the test must run much longer that I did)
but fail on nandsim.
The output of the program is:
# fsx-linux -p -W -N 102400000 /mnt/nandsim
...
139315(51 mod 256): READ 0x6e73 thru 0x9ce4 (0x2e72 bytes)
139316(52 mod 256): READ 0x8e3b thru 0x9ce4 (0xeaa bytes)
139317(53 mod 256): MAPREAD 0x9326 thru 0x9ce4 (0x9bf bytes)
139318(54 mod 256): MAPWRITE 0x3552c thru 0x3ffff (0xaad4 bytes)
139319(55 mod 256): MAPWRITE 0x33797 thru 0x3ec5f (0xb4c9 bytes)
139320(56 mod 256): READ 0x1209 thru 0x34bd (0x22b5 bytes)
139321(57 mod 256): WRITE 0x27adf thru 0x2f666 (0x7b88 bytes)
139322(58 mod 256): MAPREAD 0x9b04 thru 0xaa67 (0xf64 bytes)
139323(59 mod 256): WRITE 0x14804 thru 0x1bc3b (0x7438 bytes)
139324(60 mod 256): WRITE 0xc842 thru 0x1bf0f (0xf6ce bytes)
139325(61 mod 256): MAPREAD 0x12f69 thru 0x1409f (0x1137 bytes)
139326(62 mod 256): MAPREAD 0x14c53 thru 0x1657a (0x1928 bytes)
139327(63 mod 256): MAPREAD 0x17f1f thru 0x22ebc (0xaf9e bytes) ***RRRR***
Correct content saved for comparison
(maybe hexdump "/mnt/nandsim/fsx-test" vs "/mnt/nandsim/fsx-test.fsxgood")
I put in attachement the two test files, the log and the test program.
Luc
/*
* Copyright (C) 1991, NeXT Computer, Inc. All Rights Reserverd.
*
* @APPLE_LICENSE_HEADER_START@
*
* The contents of this file constitute Original Code as defined in and
* are subject to the Apple Public Source License Version 1.1 (the
* "License"). You may not use this file except in compliance with the
* License. Please obtain a copy of the License at
* http://www.apple.com/publicsource and read it before using this file.
*
* This Original Code and all software distributed under the License are
* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
* License for the specific language governing rights and limitations
* under the License.
*
* @APPLE_LICENSE_HEADER_END@
*
*
* File: fsx.c
* Author: Avadis Tevanian, Jr.
*
* File system exerciser.
*
* Rewritten 8/98 by Conrad Minshall.
*
* Small changes to work under Linux -- davej.
*
*/
#include <sys/types.h>
#include <sys/stat.h>
#ifdef _UWIN
# include <sys/param.h>
# include <limits.h>
# include <time.h>
# include <strings.h>
# define MAP_FILE 0
#else
//# include <sys/dirent.h>
#endif
#include <sys/file.h>
#include <sys/mman.h>
#include <limits.h>
#include <err.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdarg.h>
#include <errno.h>
#define NUMPRINTCOLUMNS 32 /* # columns of data to print on each line */
/*
* A log entry is an operation and a bunch of arguments.
*/
struct log_entry {
int operation;
int args[3];
};
#define LOGSIZE 1000
struct log_entry oplog[LOGSIZE]; /* the log */
int logptr = 0; /* current position in log */
int logcount = 0; /* total ops */
/*
* Define operations
*/
#define OP_READ 1
#define OP_WRITE 2
#define OP_TRUNCATE 3
#define OP_CLOSEOPEN 4
#define OP_MAPREAD 5
#define OP_MAPWRITE 6
#define OP_SKIPPED 7
#ifndef PAGE_SIZE
#define PAGE_SIZE getpagesize()
#endif
#define PAGE_MASK (PAGE_SIZE - 1)
char *original_buf; /* a pointer to the original data */
char *good_buf; /* a pointer to the correct data */
char *temp_buf; /* a pointer to the current data */
char *fname; /* name of our test file */
int fd; /* fd for our test file */
off_t file_size = 0;
off_t biggest = 0;
char state[256];
unsigned long testcalls = 0; /* calls to function "test" */
unsigned long simulatedopcount = 0; /* -b flag */
int closeprob = 0; /* -c flag */
int debug = 0; /* -d flag */
unsigned long debugstart = 0; /* -D flag */
unsigned long maxfilelen = 256 * 1024; /* -l flag */
int sizechecks = 1; /* -n flag disables them */
int maxoplen = 64 * 1024; /* -o flag */
int quiet = 0; /* -q flag */
unsigned long progressinterval = 0; /* -p flag */
int readbdy = 1; /* -r flag */
int style = 0; /* -s flag */
int truncbdy = 1; /* -t flag */
int writebdy = 1; /* -w flag */
long monitorstart = -1; /* -m flag */
long monitorend = -1; /* -m flag */
int lite = 0; /* -L flag */
long numops = -1; /* -N flag */
int randomoplen = 1; /* -O flag disables it */
int seed = 1; /* -S flag */
int mapped_writes = 1; /* -W flag disables */
int mapped_reads = 1; /* -R flag disables it */
int fsxgoodfd = 0;
FILE * fsxlogf = NULL;
int badoff = -1;
int closeopen = 0;
void
prt(char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vfprintf(stdout, fmt, args);
if (fsxlogf)
vfprintf(fsxlogf, fmt, args);
va_end(args);
}
void
prterr(char *prefix)
{
prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno));
}
void
log4(int operation, int arg0, int arg1, int arg2)
{
struct log_entry *le;
le = &oplog[logptr];
le->operation = operation;
if (closeopen)
le->operation = ~ le->operation;
le->args[0] = arg0;
le->args[1] = arg1;
le->args[2] = arg2;
logptr++;
logcount++;
if (logptr >= LOGSIZE)
logptr = 0;
}
void
logdump(void)
{
int i, count, down;
struct log_entry *lp;
prt("LOG DUMP (%d total operations):\n", logcount);
if (logcount < LOGSIZE) {
i = 0;
count = logcount;
} else {
i = logptr;
count = LOGSIZE;
}
for ( ; count > 0; count--) {
int opnum;
opnum = i+1 + (logcount/LOGSIZE)*LOGSIZE;
prt("%d(%d mod 256): ", opnum, opnum%256);
lp = &oplog[i];
if ((closeopen = lp->operation < 0))
lp->operation = ~ lp->operation;
switch (lp->operation) {
case OP_MAPREAD:
prt("MAPREAD\t0x%x thru 0x%x\t(0x%x bytes)",
lp->args[0], lp->args[0] + lp->args[1] - 1,
lp->args[1]);
if (badoff >= lp->args[0] && badoff <
lp->args[0] + lp->args[1])
prt("\t***RRRR***");
break;
case OP_MAPWRITE:
prt("MAPWRITE 0x%x thru 0x%x\t(0x%x bytes)",
lp->args[0], lp->args[0] + lp->args[1] - 1,
lp->args[1]);
if (badoff >= lp->args[0] && badoff <
lp->args[0] + lp->args[1])
prt("\t******WWWW");
break;
case OP_READ:
prt("READ\t0x%x thru 0x%x\t(0x%x bytes)",
lp->args[0], lp->args[0] + lp->args[1] - 1,
lp->args[1]);
if (badoff >= lp->args[0] &&
badoff < lp->args[0] + lp->args[1])
prt("\t***RRRR***");
break;
case OP_WRITE:
prt("WRITE\t0x%x thru 0x%x\t(0x%x bytes)",
lp->args[0], lp->args[0] + lp->args[1] - 1,
lp->args[1]);
if (lp->args[0] > lp->args[2])
prt(" HOLE");
else if (lp->args[0] + lp->args[1] > lp->args[2])
prt(" EXTEND");
if ((badoff >= lp->args[0] || badoff >=lp->args[2]) &&
badoff < lp->args[0] + lp->args[1])
prt("\t***WWWW");
break;
case OP_TRUNCATE:
down = lp->args[0] < lp->args[1];
prt("TRUNCATE %s\tfrom 0x%x to 0x%x",
down ? "DOWN" : "UP", lp->args[1], lp->args[0]);
if (badoff >= lp->args[!down] &&
badoff < lp->args[!!down])
prt("\t******WWWW");
break;
case OP_SKIPPED:
prt("SKIPPED (no operation)");
break;
default:
prt("BOGUS LOG ENTRY (operation code = %d)!",
lp->operation);
}
if (closeopen)
prt("\n\t\tCLOSE/OPEN");
prt("\n");
i++;
if (i == LOGSIZE)
i = 0;
}
}
void
save_buffer(char *buffer, off_t bufferlength, int fd)
{
off_t ret;
ssize_t byteswritten;
if (fd <= 0 || bufferlength == 0)
return;
if (bufferlength > INT_MAX) {
prt("fsx flaw: overflow in save_buffer\n");
exit(67);
}
if (lite) {
off_t size_by_seek = lseek(fd, (off_t)0, L_XTND);
if (size_by_seek == (off_t)-1)
prterr("save_buffer: lseek eof");
else if (bufferlength > size_by_seek) {
fprintf(stderr, "save_buffer: .fsxgood file too short... will save 0x%qx bytes instead of 0x%qx\n", (unsigned long long)size_by_seek,
(unsigned long long)bufferlength);
bufferlength = size_by_seek;
}
}
ret = lseek(fd, (off_t)0, SEEK_SET);
if (ret == (off_t)-1)
prterr("save_buffer: lseek 0");
byteswritten = write(fd, buffer, (size_t)bufferlength);
if (byteswritten != bufferlength) {
if (byteswritten == -1)
prterr("save_buffer write");
else
fprintf(stderr, "save_buffer: short write, 0x%x bytes instead of 0x%qx\n",
(unsigned)byteswritten,
(unsigned long long)bufferlength);
}
}
void
report_failure(int status)
{
logdump();
if (fsxgoodfd) {
if (good_buf) {
save_buffer(good_buf, file_size, fsxgoodfd);
prt("Correct content saved for comparison\n");
prt("(maybe hexdump \"%s\" vs \"%s.fsxgood\")\n",
fname, fname);
}
close(fsxgoodfd);
}
exit(status);
}
#define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \
*(((unsigned char *)(cp)) + 1)))
void
check_buffers(unsigned offset, unsigned size)
{
unsigned char c, t;
unsigned i = 0;
unsigned n = 0;
unsigned op = 0;
unsigned bad = 0;
if (bcmp(good_buf + offset, temp_buf, size) != 0) {
prt("READ BAD DATA: offset = 0x%x, size = 0x%x\n",
offset, size);
prt("OFFSET\tGOOD\tBAD\tRANGE\n");
while (size > 0) {
c = good_buf[offset];
t = temp_buf[i];
if (c != t) {
if (n == 0) {
bad = short_at(&temp_buf[i]);
prt("0x%5x\t0x%04x\t0x%04x", offset,
short_at(&good_buf[offset]), bad);
op = temp_buf[offset & 1 ? i+1 : i];
}
n++;
badoff = offset;
}
offset++;
i++;
size--;
}
if (n) {
prt("\t0x%5x\n", n);
if (bad)
prt("operation# (mod 256) for the bad data may be %u\n", ((unsigned)op & 0xff));
else
prt("operation# (mod 256) for the bad data unknown, check HOLE and EXTEND ops\n");
} else
prt("????????????????\n");
report_failure(110);
}
}
void
check_size(void)
{
struct stat statbuf;
off_t size_by_seek;
if (fstat(fd, &statbuf)) {
prterr("check_size: fstat");
statbuf.st_size = -1;
}
size_by_seek = lseek(fd, (off_t)0, L_XTND);
if (file_size != statbuf.st_size || file_size != size_by_seek) {
prt("Size error: expected 0x%qx stat 0x%qx seek 0x%qx\n",
(unsigned long long)file_size,
(unsigned long long)statbuf.st_size,
(unsigned long long)size_by_seek);
report_failure(120);
}
}
void
check_trunc_hack(void)
{
struct stat statbuf;
ftruncate(fd, (off_t)0);
ftruncate(fd, (off_t)100000);
fstat(fd, &statbuf);
if (statbuf.st_size != (off_t)100000) {
prt("no extend on truncate! not posix!\n");
exit(130);
}
ftruncate(fd, 0);
}
void
doread(unsigned offset, unsigned size)
{
off_t ret;
unsigned iret;
offset -= offset % readbdy;
if (size == 0) {
if (!quiet && testcalls > simulatedopcount)
prt("skipping zero size read\n");
log4(OP_SKIPPED, OP_READ, offset, size);
return;
}
if (size + offset > file_size) {
if (!quiet && testcalls > simulatedopcount)
prt("skipping seek/read past end of file\n");
log4(OP_SKIPPED, OP_READ, offset, size);
return;
}
log4(OP_READ, offset, size, 0);
if (testcalls <= simulatedopcount)
return;
if (!quiet && (progressinterval && testcalls % progressinterval == 0 ||
debug &&
(monitorstart == -1 ||
offset + size > monitorstart &&
(monitorend == -1 || offset <= monitorend))))
prt("%lu read\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
offset, offset + size - 1, size);
ret = lseek(fd, (off_t)offset, SEEK_SET);
if (ret == (off_t)-1) {
prterr("doread: lseek");
report_failure(140);
}
iret = read(fd, temp_buf, size);
if (iret != size) {
if (iret == -1)
prterr("doread: read");
else
prt("short read: 0x%x bytes instead of 0x%x\n",
iret, size);
report_failure(141);
}
check_buffers(offset, size);
}
void
domapread(unsigned offset, unsigned size)
{
unsigned pg_offset;
unsigned map_size;
char *p;
offset -= offset % readbdy;
if (size == 0) {
if (!quiet && testcalls > simulatedopcount)
prt("skipping zero size read\n");
log4(OP_SKIPPED, OP_MAPREAD, offset, size);
return;
}
if (size + offset > file_size) {
if (!quiet && testcalls > simulatedopcount)
prt("skipping seek/read past end of file\n");
log4(OP_SKIPPED, OP_MAPREAD, offset, size);
return;
}
log4(OP_MAPREAD, offset, size, 0);
if (testcalls <= simulatedopcount)
return;
if (!quiet && (progressinterval && testcalls % progressinterval == 0 ||
debug &&
(monitorstart == -1 ||
offset + size > monitorstart &&
(monitorend == -1 || offset <= monitorend))))
prt("%lu mapread\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
offset, offset + size - 1, size);
pg_offset = offset & PAGE_MASK;
map_size = pg_offset + size;
if ((p = (char *)mmap(0, map_size, PROT_READ, MAP_SHARED, fd,
(off_t)(offset - pg_offset))) == (char *)-1) {
prterr("domapread: mmap");
report_failure(190);
}
memcpy(temp_buf, p + pg_offset, size);
if (munmap(p, map_size) != 0) {
prterr("domapread: munmap");
report_failure(191);
}
check_buffers(offset, size);
}
void
gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size)
{
while (size--) {
good_buf[offset] = testcalls % 256;
if (offset % 2)
good_buf[offset] += original_buf[offset];
offset++;
}
}
void
dowrite(unsigned offset, unsigned size)
{
off_t ret;
unsigned iret;
offset -= offset % writebdy;
if (size == 0) {
if (!quiet && testcalls > simulatedopcount)
prt("skipping zero size write\n");
log4(OP_SKIPPED, OP_WRITE, offset, size);
return;
}
log4(OP_WRITE, offset, size, file_size);
gendata(original_buf, good_buf, offset, size);
if (file_size < offset + size) {
if (file_size < offset)
bzero(good_buf + file_size, offset - file_size);
file_size = offset + size;
if (lite) {
fprintf(stderr, "Lite file size bug in fsx!");
report_failure(149);
}
}
if (testcalls <= simulatedopcount)
return;
if (!quiet && (progressinterval && testcalls % progressinterval == 0 ||
debug &&
(monitorstart == -1 ||
offset + size > monitorstart &&
(monitorend == -1 || offset <= monitorend))))
prt("%lu write\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
offset, offset + size - 1, size);
ret = lseek(fd, (off_t)offset, SEEK_SET);
if (ret == (off_t)-1) {
prterr("dowrite: lseek");
report_failure(150);
}
iret = write(fd, good_buf + offset, size);
if (iret != size) {
if (iret == -1)
prterr("dowrite: write");
else
prt("short write: 0x%x bytes instead of 0x%x\n",
iret, size);
report_failure(151);
}
}
void
domapwrite(unsigned offset, unsigned size)
{
unsigned pg_offset;
unsigned map_size;
off_t cur_filesize;
char *p;
offset -= offset % writebdy;
if (size == 0) {
if (!quiet && testcalls > simulatedopcount)
prt("skipping zero size write\n");
log4(OP_SKIPPED, OP_MAPWRITE, offset, size);
return;
}
cur_filesize = file_size;
log4(OP_MAPWRITE, offset, size, 0);
gendata(original_buf, good_buf, offset, size);
if (file_size < offset + size) {
if (file_size < offset)
bzero(good_buf + file_size, offset - file_size);
file_size = offset + size;
if (lite) {
fprintf(stderr, "Lite file size bug in fsx!");
report_failure(200);
}
}
if (testcalls <= simulatedopcount)
return;
if (!quiet && (progressinterval && testcalls % progressinterval == 0 ||
debug &&
(monitorstart == -1 ||
offset + size > monitorstart &&
(monitorend == -1 || offset <= monitorend))))
prt("%lu mapwrite\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
offset, offset + size - 1, size);
if (file_size > cur_filesize) {
if (ftruncate(fd, file_size) == -1) {
prterr("domapwrite: ftruncate");
exit(201);
}
}
pg_offset = offset & PAGE_MASK;
map_size = pg_offset + size;
if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE,
MAP_FILE | MAP_SHARED, fd,
(off_t)(offset - pg_offset))) == (char *)-1) {
prterr("domapwrite: mmap");
report_failure(202);
}
memcpy(p + pg_offset, good_buf + offset, size);
if (msync(p, map_size, 0) != 0) {
prterr("domapwrite: msync");
report_failure(203);
}
if (munmap(p, map_size) != 0) {
prterr("domapwrite: munmap");
report_failure(204);
}
}
void
dotruncate(unsigned size)
{
int oldsize = file_size;
size -= size % truncbdy;
if (size > biggest) {
biggest = size;
if (!quiet && testcalls > simulatedopcount)
prt("truncating to largest ever: 0x%x\n", size);
}
log4(OP_TRUNCATE, size, (unsigned)file_size, 0);
if (size > file_size)
bzero(good_buf + file_size, size - file_size);
file_size = size;
if (testcalls <= simulatedopcount)
return;
if (progressinterval && testcalls % progressinterval == 0 ||
debug && (monitorstart == -1 || monitorend == -1 ||
size <= monitorend))
prt("%lu trunc\tfrom 0x%x to 0x%x\n", testcalls, oldsize, size);
if (ftruncate(fd, (off_t)size) == -1) {
prt("ftruncate1: %x\n", size);
prterr("dotruncate: ftruncate");
report_failure(160);
}
}
void
writefileimage()
{
ssize_t iret;
if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) {
prterr("writefileimage: lseek");
report_failure(171);
}
iret = write(fd, good_buf, file_size);
if ((off_t)iret != file_size) {
if (iret == -1)
prterr("writefileimage: write");
else
prt("short write: 0x%x bytes instead of 0x%qx\n",
iret, (unsigned long long)file_size);
report_failure(172);
}
if (lite ? 0 : ftruncate(fd, file_size) == -1) {
prt("ftruncate2: %qx\n", (unsigned long long)file_size);
prterr("writefileimage: ftruncate");
report_failure(173);
}
}
void
docloseopen(void)
{
if (testcalls <= simulatedopcount)
return;
if (debug)
prt("%lu close/open\n", testcalls);
if (close(fd)) {
prterr("docloseopen: close");
report_failure(180);
}
fd = open(fname, O_RDWR, 0);
if (fd < 0) {
prterr("docloseopen: open");
report_failure(181);
}
}
void
test(void)
{
unsigned long offset;
unsigned long size = maxoplen;
unsigned long rv = random();
unsigned long op = rv % (3 + !lite + mapped_writes);
/* turn off the map read if necessary */
if (op == 2 && !mapped_reads)
op = 0;
if (simulatedopcount > 0 && testcalls == simulatedopcount)
writefileimage();
testcalls++;
if (closeprob)
closeopen = (rv >> 3) < (1 << 28) / closeprob;
if (debugstart > 0 && testcalls >= debugstart)
debug = 1;
if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0)
prt("%lu...\n", testcalls);
/*
* READ: op = 0
* WRITE: op = 1
* MAPREAD: op = 2
* TRUNCATE: op = 3
* MAPWRITE: op = 3 or 4
*/
if (lite ? 0 : op == 3 && (style & 1) == 0) /* vanilla truncate? */
dotruncate(random() % maxfilelen);
else {
if (randomoplen)
size = random() % (maxoplen+1);
if (lite ? 0 : op == 3)
dotruncate(size);
else {
offset = random();
if (op == 1 || op == (lite ? 3 : 4)) {
offset %= maxfilelen;
if (offset + size > maxfilelen)
size = maxfilelen - offset;
if (op != 1)
domapwrite(offset, size);
else
dowrite(offset, size);
} else {
if (file_size)
offset %= file_size;
else
offset = 0;
if (offset + size > file_size)
size = file_size - offset;
if (op != 0)
domapread(offset, size);
else
doread(offset, size);
}
}
}
if (sizechecks && testcalls > simulatedopcount)
check_size();
if (closeopen)
docloseopen();
}
void
cleanup(sig)
int sig;
{
if (sig)
prt("signal %d\n", sig);
prt("testcalls = %lu\n", testcalls);
exit(sig);
}
void
usage(void)
{
fprintf(stdout, "usage: %s",
"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\
-b opnum: beginning operation number (default 1)\n\
-c P: 1 in P chance of file close+open at each op (default infinity)\n\
-d: debug output for all operations\n\
-l flen: the upper bound on file size (default 262144)\n\
-m startop:endop: monitor (print debug output) specified byte range (default 0:infinity)\n\
-n: no verifications of file size\n\
-o oplen: the upper bound on operation size (default 65536)\n\
-p progressinterval: debug output at specified operation interval\n\
-q: quieter operation\n\
-r readbdy: 4096 would make reads page aligned (default 1)\n\
-s style: 1 gives smaller truncates (default 0)\n\
-t truncbdy: 4096 would make truncates page aligned (default 1)\n\
-w writebdy: 4096 would make writes page aligned (default 1)\n\
-D startingop: debug output starting at specified operation\n\
-L: fsxLite - no file creations & no file size changes\n\
-N numops: total # operations to do (default infinity)\n\
-O: use oplen (see -o flag) for every op (default random)\n\
-P: save .fsxlog and .fsxgood files in dirpath (default ./)\n\
-S seed: for random # generator (default 1) 0 gets timestamp\n\
-W: mapped write operations DISabled\n\
-R: read() system calls only (mapped reads disabled)\n\
fname: this filename is REQUIRED (no default)\n");
exit(90);
}
int
getnum(char *s, char **e)
{
int ret = -1;
*e = (char *) 0;
ret = strtol(s, e, 0);
if (*e)
switch (**e) {
case 'b':
case 'B':
ret *= 512;
*e = *e + 1;
break;
case 'k':
case 'K':
ret *= 1024;
*e = *e + 1;
break;
case 'm':
case 'M':
ret *= 1024*1024;
*e = *e + 1;
break;
case 'w':
case 'W':
ret *= 4;
*e = *e + 1;
break;
}
return (ret);
}
int
main(int argc, char **argv)
{
int i, style, ch;
char *endp;
char goodfile[1024];
char logfile[1024];
goodfile[0] = 0;
logfile[0] = 0;
setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
while ((ch = getopt(argc, argv, "b:c:dl:m:no:p:qr:s:t:w:D:LN:OP:RS:W"))
!= EOF)
switch (ch) {
case 'b':
simulatedopcount = getnum(optarg, &endp);
if (!quiet)
fprintf(stdout, "Will begin at operation %ld\n",
simulatedopcount);
if (simulatedopcount == 0)
usage();
simulatedopcount -= 1;
break;
case 'c':
closeprob = getnum(optarg, &endp);
if (!quiet)
fprintf(stdout,
"Chance of close/open is 1 in %d\n",
closeprob);
if (closeprob <= 0)
usage();
break;
case 'd':
debug = 1;
break;
case 'l':
maxfilelen = getnum(optarg, &endp);
if (maxfilelen <= 0)
usage();
break;
case 'm':
monitorstart = getnum(optarg, &endp);
if (monitorstart < 0)
usage();
if (!endp || *endp++ != ':')
usage();
monitorend = getnum(endp, &endp);
if (monitorend < 0)
usage();
if (monitorend == 0)
monitorend = -1; /* aka infinity */
debug = 1;
case 'n':
sizechecks = 0;
break;
case 'o':
maxoplen = getnum(optarg, &endp);
if (maxoplen <= 0)
usage();
break;
case 'p':
progressinterval = getnum(optarg, &endp);
if (progressinterval < 0)
usage();
break;
case 'q':
quiet = 1;
break;
case 'r':
readbdy = getnum(optarg, &endp);
if (readbdy <= 0)
usage();
break;
case 's':
style = getnum(optarg, &endp);
if (style < 0 || style > 1)
usage();
break;
case 't':
truncbdy = getnum(optarg, &endp);
if (truncbdy <= 0)
usage();
break;
case 'w':
writebdy = getnum(optarg, &endp);
if (writebdy <= 0)
usage();
break;
case 'D':
debugstart = getnum(optarg, &endp);
if (debugstart < 1)
usage();
break;
case 'L':
lite = 1;
break;
case 'N':
numops = getnum(optarg, &endp);
if (numops < 0)
usage();
break;
case 'O':
randomoplen = 0;
break;
case 'P':
strncpy(goodfile, optarg, sizeof(goodfile));
strcat(goodfile, "/");
strncpy(logfile, optarg, sizeof(logfile));
strcat(logfile, "/");
break;
case 'R':
mapped_reads = 0;
break;
case 'S':
seed = getnum(optarg, &endp);
if (seed == 0)
seed = time(0) % 10000;
if (!quiet)
fprintf(stdout, "Seed set to %d\n", seed);
if (seed < 0)
usage();
break;
case 'W':
mapped_writes = 0;
if (!quiet)
fprintf(stdout, "mapped writes DISABLED\n");
break;
default:
usage();
/* NOTREACHED */
}
argc -= optind;
argv += optind;
if (argc != 1)
usage();
fname = argv[0];
signal(SIGHUP, cleanup);
signal(SIGINT, cleanup);
signal(SIGPIPE, cleanup);
signal(SIGALRM, cleanup);
signal(SIGTERM, cleanup);
signal(SIGXCPU, cleanup);
signal(SIGXFSZ, cleanup);
signal(SIGVTALRM, cleanup);
signal(SIGUSR1, cleanup);
signal(SIGUSR2, cleanup);
initstate(seed, state, 256);
setstate(state);
fd = open(fname, O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC), 0666);
if (fd < 0) {
prterr(fname);
exit(91);
}
strncat(goodfile, fname, 256);
strcat (goodfile, ".fsxgood");
fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666);
if (fsxgoodfd < 0) {
prterr(goodfile);
exit(92);
}
strncat(logfile, fname, 256);
strcat (logfile, ".fsxlog");
fsxlogf = fopen(logfile, "w");
if (fsxlogf == NULL) {
prterr(logfile);
exit(93);
}
if (lite) {
off_t ret;
file_size = maxfilelen = lseek(fd, (off_t)0, L_XTND);
if (file_size == (off_t)-1) {
prterr(fname);
fprintf(stderr, "main: lseek eof");
exit(94);
}
ret = lseek(fd, (off_t)0, SEEK_SET);
if (ret == (off_t)-1) {
prterr(fname);
fprintf(stderr, "main: lseek 0");
exit(95);
}
}
original_buf = (char *) malloc(maxfilelen);
for (i = 0; i < maxfilelen; i++)
original_buf[i] = random() % 256;
good_buf = (char *) malloc(maxfilelen);
bzero(good_buf, maxfilelen);
temp_buf = (char *) malloc(maxoplen);
bzero(temp_buf, maxoplen);
if (lite) { /* zero entire existing file */
ssize_t written;
written = write(fd, good_buf, (size_t)maxfilelen);
if (written != maxfilelen) {
if (written == -1) {
prterr(fname);
fprintf(stderr, "main: error on write");
} else
fprintf(stderr, "main: short write, 0x%x bytes instead of 0x%x\n",
(unsigned)written, maxfilelen);
exit(98);
}
} else
check_trunc_hack();
while (numops == -1 || numops--)
test();
if (close(fd)) {
prterr("close");
report_failure(99);
}
prt("All operations completed A-OK!\n");
exit(0);
return 0;
}
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