NetBSD/sys/arch/hp300/stand/installboot.c

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/*
* Copyright (c) 1980, 1986, 1990 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)installboot.c 7.2 (Berkeley) 12/16/90
* $Id: installboot.c,v 1.2 1993/05/22 07:59:00 cgd Exp $
*/
#ifndef lint
char copyright[] =
"Copyright (c) 1980, 1986, 1990 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
/* from: static char sccsid[] = "@(#)installboot.c 7.2 (Berkeley) 12/16/90"; */
static char rcsid[] = "$Id: installboot.c,v 1.2 1993/05/22 07:59:00 cgd Exp $";
#endif /* not lint */
#include "sys/param.h"
#include "ufs/fs.h"
char block[1024];
int maxbootsize = 16 * 7 * 512; /* XXX */
/*
* HPs are a kludge.
* The boot program won't fit in the boot area of a file system so we
* have to place it outside the file systems. By convention, this means
* that if the 'a' partition is being used for '/', it is offset one
* cylinder into the disk and the boot program goes into that one cylinder.
* Also by convention, the 'c' partition is defined to be the entire disk
* including this boot cylinder. If these conventions are not adhered to,
* the potential for disaster is enormous.
*/
main(argc, argv)
int argc;
char *argv[];
{
int ifd, ofd, len;
char *dev, *standalonecode;
int bsize = 1024;
if (argc != 3)
usage();
dev = argv[2];
len = strlen(dev);
if (dev[len-1] != 'c')
usage();
standalonecode = argv[1];
ifd = open(standalonecode, 0);
if (ifd < 0) {
perror(standalonecode);
exit(1);
}
ofd = open(dev, 1);
if (ofd < 0) {
perror(dev);
exit(1);
}
while ((len = read(ifd, block, bsize)) > 0) {
if ((maxbootsize -= bsize) < 0) {
printf("%s: too big\n", standalonecode);
exit(2);
}
if (len < bsize)
bzero(&block[len], bsize-len);
if (write(ofd, block, bsize) != bsize) {
perror(dev);
exit(2);
}
}
if (len < 0) {
perror(standalonecode);
exit(2);
}
exit(0);
}
usage()
{
printf("Usage: installboot bootprog device\n");
printf("where:\n");
printf("\t\"bootprog\" is a LIF format file < %d bytes long\n",
maxbootsize);
printf("\t\"device\" must be the 'c' partition of a bootable disk\n");
printf("WARNING!! If the 'c' partition contains a file system, %s\n",
"DON'T RUN THIS!!");
exit(1);
}