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/*
* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
/* Copyright 1998 Apple Computer, Inc.
*
* Get disk label's sector size routine.
* Input: pointer to a block device string ie: "/dev/disk1s1"
* Return: sector size from the disk label
*
* HISTORY
*
* 27 May 1998 K. Crippes at Apple
* Rhapsody version created.
* 18 Feb 1999 D. Markarian at Apple
* DKIOCGLABEL deprecated; using DKIOCBLKSIZE instead, which now returns
* the appropriate size for ufs partitions created with wierd block sizes.
*/
#include <sys/types.h>
#include <sys/file.h>
#include <sys/disk.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
char *blockcheck __P((char *));
long dksecsize (dev)
char *dev;
{
int fd; /* file descriptor for reading device label */
char *cdev;
int devblklen;
extern int errno;
/* Convert block device into a character device string */
if ((cdev = blockcheck(dev))) {
if ((fd = open(cdev, O_RDONLY)) < 0) {
fprintf(stderr, "Can't open %s, %s\n", cdev, strerror(errno));
return (0);
}
}
else
return (0);
if (ioctl(fd, DKIOCGETBLOCKSIZE, &devblklen) < 0) {
(void)close(fd);
return (0);
}
else {
(void)close(fd);
return (devblklen);
}
}
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