largest_file.c revision d583b39bfb4e2571d3e41097c5c357ffe353ad45
/*
* 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
* 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 by Delphix. All rights reserved.
*/
#include "../file_common.h"
#include <signal.h>
#include <stdio.h>
/*
* --------------------------------------------------------------
*
* Assertion:
* The last byte of the largest file size can be
* accessed without any errors. Also, the writing
* beyond the last byte of the largest file size
* will produce an errno of EFBIG.
*
* --------------------------------------------------------------
* If the write() system call below returns a "1",
* then the last byte can be accessed.
* --------------------------------------------------------------
*/
static void sigxfsz(int);
static void usage(char *);
int
{
int fd = 0;
offset_t llseek_ret = 0;
int write_ret = 0;
int err = 0;
char mybuf[5];
char *testfile;
if (argc != 2) {
}
if (fd < 0) {
perror("Failed to create testfile");
goto out;
}
if (llseek_ret < 0) {
perror("Failed to seek to end of testfile");
goto out;
}
if (write_ret < 0) {
perror("Failed to write to end of file");
goto out;
}
offset = 0;
if (llseek_ret < 0) {
perror("Failed to seek to end of file");
goto out;
}
if (write_ret < 0) {
(void) printf("write errno=EFBIG: success\n");
err = 0;
} else {
perror("Did not receive EFBIG");
}
} else {
(void) printf("write completed successfully, test failed\n");
err = 1;
}
out:
return (err);
}
static void
{
exit(1);
}
/* ARGSUSED */
static void
{
(void) printf("\nlargest_file: sigxfsz() caught SIGXFSZ\n");
}