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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 2012, 2014 by Delphix. All rights reserved.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
#include <sys/param.h>
#include <string.h>
#include <time.h>
#include <inttypes.h>
#define FSIZE 256*1024*1024
#define BSIZE 512
/* Initialize Globals */
static long fsize = FSIZE;
static size_t bsize = BSIZE;
static int count = 0;
static int rflag = 0;
static int seed = 0;
static int vflag = 0;
static int errflag = 0;
static off_t offset = 0;
static char *filename = NULL;
static void usage(char *execname);
static void parse_options(int argc, char *argv[]);
static void do_write(int fd);
static void do_trunc(int fd);
static void
usage(char *execname)
{
(void) fprintf(stderr,
"usage: %s [-b blocksize] [-c count] [-f filesize]"
" [-o offset] [-s seed] [-r] [-v] filename\n", execname);
(void) exit(1);
}
int
main(int argc, char *argv[])
{
int i = 0;
int fd = -1;
parse_options(argc, argv);
fd = open(filename, O_RDWR|O_CREAT|O_TRUNC, 0666);
if (fd < 0) {
perror("open");
exit(3);
}
for (i = 0; count == 0 || i < count; i++) {
(void) do_write(fd);
(void) do_trunc(fd);
}
(void) close(fd);
return (0);
}
static void
parse_options(int argc, char *argv[])
{
int c;
extern char *optarg;
extern int optind, optopt;
count = fsize / bsize;
seed = time(NULL);
while ((c = getopt(argc, argv, "b:c:f:o:rs:v")) != -1) {
switch (c) {
case 'b':
bsize = atoi(optarg);
break;
case 'c':
count = atoi(optarg);
break;
case 'f':
fsize = atoi(optarg);
break;
case 'o':
offset = atoi(optarg);
break;
case 'r':
rflag++;
break;
case 's':
seed = atoi(optarg);
break;
case 'v':
vflag++;
break;
case ':':
(void) fprintf(stderr,
"Option -%c requires an operand\n", optopt);
errflag++;
break;
case '?':
(void) fprintf(stderr,
"Unrecognized option: -%c\n", optopt);
errflag++;
break;
}
if (errflag) {
(void) usage(argv[0]);
}
}
if (argc <= optind) {
(void) fprintf(stderr,
"No filename specified\n");
usage(argv[0]);
}
filename = argv[optind];
if (vflag) {
(void) fprintf(stderr, "Seed = %d\n", seed);
}
srandom(seed);
}
static void
do_write(int fd)
{
off_t roffset = 0;
char *buf = NULL;
char *rbuf = NULL;
buf = (char *)calloc(1, bsize);
rbuf = (char *)calloc(1, bsize);
if (buf == NULL || rbuf == NULL) {
perror("malloc");
exit(4);
}
roffset = random() % fsize;
if (lseek64(fd, (offset + roffset), SEEK_SET) < 0) {
perror("lseek");
exit(5);
}
(void) strcpy(buf, "ZFS Test Suite Truncation Test");
if (write(fd, buf, bsize) < bsize) {
perror("write");
exit(6);
}
if (rflag) {
if (lseek64(fd, (offset + roffset), SEEK_SET) < 0) {
perror("lseek");
exit(7);
}
if (read(fd, rbuf, bsize) < bsize) {
perror("read");
exit(8);
}
if (memcmp(buf, rbuf, bsize) != 0) {
perror("memcmp");
exit(9);
}
}
if (vflag) {
(void) fprintf(stderr,
"Wrote to offset %" PRId64 "\n", (offset + roffset));
if (rflag) {
(void) fprintf(stderr,
"Read back from offset %" PRId64 "\n",
(offset + roffset));
}
}
(void) free(buf);
(void) free(rbuf);
}
static void
do_trunc(int fd)
{
off_t roffset = 0;
roffset = random() % fsize;
if (ftruncate64(fd, (offset + roffset)) < 0) {
perror("truncate");
exit(7);
}
if (vflag) {
(void) fprintf(stderr, "Truncated at offset %" PRId64 "\n",
(offset + roffset));
}
}
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