installboot: from sun ports
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chuck
parent
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bee8cda103
58
share/man/man8/man8.mvme68k/installboot.8
Normal file
58
share/man/man8/man8.mvme68k/installboot.8
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@ -0,0 +1,58 @@
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.\" $Id: installboot.8,v 1.1 1996/05/17 20:00:53 chuck Exp $
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.\"
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.Dd 31 May 1995
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.Dt INSTALLBOOT 8
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.Os
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.Sh NAME
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.Nm installboot
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.Nd install a bootstrap on a UFS disk
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.Sh SYNOPSIS
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.Nm installboot
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.Fl n | Fl v
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.Ar ufsboot
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.Ar bootxx
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.Ar rawdev
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.Sh DESCRIPTION
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.Nm installboot
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is used to install a "first-stage" boot program into the boot area
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of a UFS disk partition, and initialize the table of block numbers the
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.Ar bootxx
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program uses to load the second-stage boot program.
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.Pp
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The options are as follows:
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.Bl -tag -width flag
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.It Fl n
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Do not actually write anything on the disk.
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.It Fl v
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Be verbose, printing out the block numbers that
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.Ar bootxx
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will use to load
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.Ar ufsboot .
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.El
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.Pp
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The arguments are:
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.Bl -tag -width ufsboot
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.It Ar ufsboot
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the name of the second-stage boot program in the file system
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where the first-stage boot program is to be installed.
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.It Ar bootxx
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the name of the prototype file for the first stage boot program.
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.It Ar rawdev
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the name of the raw device in which the first-stage boot program
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is to be installed. This should correspond to the block device
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on which the file system containing
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.Ar ufsboot
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is mounted.
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.El
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.Sh BUGS
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.Nm installboot
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requires simultaneous access to the mounted file system and
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the raw device, but that is not allowed with the kernel
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.Nm securelevel
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variable set to a value greater than zero (the default), so
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.Nm installboot
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only works in single-user mode (or insecure mode - see
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.Xr init 8 ).
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.Sh "SEE ALSO"
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.Xr disklabel 8 ,
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.Xr init 8
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10
sys/arch/mvme68k/stand/installboot/Makefile
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10
sys/arch/mvme68k/stand/installboot/Makefile
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@ -0,0 +1,10 @@
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# $NetBSD: Makefile,v 1.1 1996/05/17 20:00:52 chuck Exp $
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PROG= installboot
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MAN= installboot.8
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BINDIR=/usr/mdec
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# Need this to work in the miniroot
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LDSTATIC= -static
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.include <bsd.prog.mk>
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58
sys/arch/mvme68k/stand/installboot/installboot.8
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58
sys/arch/mvme68k/stand/installboot/installboot.8
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@ -0,0 +1,58 @@
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.\" $Id: installboot.8,v 1.1 1996/05/17 20:00:53 chuck Exp $
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.\"
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.Dd 31 May 1995
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.Dt INSTALLBOOT 8
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.Os
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.Sh NAME
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.Nm installboot
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.Nd install a bootstrap on a UFS disk
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.Sh SYNOPSIS
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.Nm installboot
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.Fl n | Fl v
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.Ar ufsboot
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.Ar bootxx
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.Ar rawdev
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.Sh DESCRIPTION
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.Nm installboot
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is used to install a "first-stage" boot program into the boot area
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of a UFS disk partition, and initialize the table of block numbers the
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.Ar bootxx
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program uses to load the second-stage boot program.
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.Pp
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The options are as follows:
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.Bl -tag -width flag
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.It Fl n
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Do not actually write anything on the disk.
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.It Fl v
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Be verbose, printing out the block numbers that
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.Ar bootxx
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will use to load
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.Ar ufsboot .
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.El
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.Pp
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The arguments are:
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.Bl -tag -width ufsboot
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.It Ar ufsboot
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the name of the second-stage boot program in the file system
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where the first-stage boot program is to be installed.
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.It Ar bootxx
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the name of the prototype file for the first stage boot program.
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.It Ar rawdev
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the name of the raw device in which the first-stage boot program
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is to be installed. This should correspond to the block device
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on which the file system containing
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.Ar ufsboot
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is mounted.
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.El
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.Sh BUGS
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.Nm installboot
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requires simultaneous access to the mounted file system and
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the raw device, but that is not allowed with the kernel
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.Nm securelevel
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variable set to a value greater than zero (the default), so
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.Nm installboot
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only works in single-user mode (or insecure mode - see
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.Xr init 8 ).
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.Sh "SEE ALSO"
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.Xr disklabel 8 ,
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.Xr init 8
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377
sys/arch/mvme68k/stand/installboot/installboot.c
Normal file
377
sys/arch/mvme68k/stand/installboot/installboot.c
Normal file
@ -0,0 +1,377 @@
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/* $NetBSD: installboot.c,v 1.1 1996/05/17 20:00:55 chuck Exp $ */
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/*
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* Copyright (c) 1994 Paul Kranenburg
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Paul Kranenburg.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ufs/dir.h>
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#include <ufs/ffs/fs.h>
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#include <err.h>
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#include <a.out.h>
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#include <fcntl.h>
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#include <nlist.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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int verbose, nowrite, hflag;
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char *boot, *proto, *dev;
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struct nlist nl[] = {
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#define X_BLOCK_SIZE 0
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{"_block_size"},
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#define X_BLOCK_COUNT 1
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{"_block_count"},
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#define X_BLOCK_TABLE 2
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{"_block_table"},
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{NULL}
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};
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int *block_size_p; /* block size var. in prototype image */
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int *block_count_p; /* block count var. in prototype image */
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daddr_t *block_table; /* block number array in prototype image */
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int maxblocknum; /* size of this array */
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char *loadprotoblocks __P((char *, long *));
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int loadblocknums __P((char *, int));
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static void devread __P((int, void *, daddr_t, size_t, char *));
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static void usage __P((void));
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int main __P((int, char *[]));
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static void
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usage()
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{
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fprintf(stderr,
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"usage: installboot [-n] [-v] [-h] <boot> <proto> <device>\n");
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exit(1);
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}
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int c;
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int devfd;
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char *protostore;
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long protosize;
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while ((c = getopt(argc, argv, "vnh")) != EOF) {
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switch (c) {
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case 'h':
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/* Don't strip a.out header */
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hflag = 1;
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break;
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case 'n':
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/* Do not actually write the bootblock to disk */
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nowrite = 1;
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break;
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case 'v':
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/* Chat */
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verbose = 1;
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break;
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default:
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usage();
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}
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}
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if (argc - optind < 3) {
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usage();
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}
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boot = argv[optind];
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proto = argv[optind + 1];
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dev = argv[optind + 2];
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if (verbose) {
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printf("boot: %s\n", boot);
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printf("proto: %s\n", proto);
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printf("device: %s\n", dev);
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}
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/* Load proto blocks into core */
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if ((protostore = loadprotoblocks(proto, &protosize)) == NULL)
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exit(1);
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/* XXX - Paranoia: Make sure size is aligned! */
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if (protosize & (DEV_BSIZE - 1))
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err(1, "proto bootblock bad size=%d", protosize);
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/* Open and check raw disk device */
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if ((devfd = open(dev, O_RDONLY, 0)) < 0)
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err(1, "open: %s", dev);
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/* Extract and load block numbers */
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if (loadblocknums(boot, devfd) != 0)
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exit(1);
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(void)close(devfd);
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if (nowrite)
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return 0;
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/* Write patched proto bootblocks into the superblock */
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if (protosize > SBSIZE - DEV_BSIZE)
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errx(1, "proto bootblocks too big");
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if ((devfd = open(dev, O_RDWR, 0)) < 0)
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err(1, "open: %s", dev);
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if (lseek(devfd, DEV_BSIZE, SEEK_SET) != DEV_BSIZE)
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err(1, "lseek bootstrap");
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/* Sync filesystems (to clean in-memory superblock?) */
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sync();
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if (write(devfd, protostore, protosize) != protosize)
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err(1, "write bootstrap");
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(void)close(devfd);
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return 0;
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}
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char *
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loadprotoblocks(fname, size)
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char *fname;
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long *size;
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{
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int fd;
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size_t tdsize; /* text+data size */
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size_t bbsize; /* boot block size (block aligned) */
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char *bp;
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struct nlist *nlp;
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struct exec eh;
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long off;
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fd = -1;
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bp = NULL;
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/* Locate block number array in proto file */
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if (nlist(fname, nl) != 0) {
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warnx("nlist: %s: symbols not found", fname);
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return NULL;
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}
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/* Validate symbol types (global data). */
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for (nlp = nl; nlp->n_un.n_name; nlp++) {
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if (nlp->n_type != (N_DATA | N_EXT)) {
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warnx("nlist: %s: wrong type", nlp->n_un.n_name);
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return NULL;
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}
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}
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if ((fd = open(fname, O_RDONLY)) < 0) {
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warn("open: %s", fname);
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return NULL;
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}
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if (read(fd, &eh, sizeof(eh)) != sizeof(eh)) {
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warn("read: %s", fname);
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goto bad;
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}
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if (N_GETMAGIC(eh) != OMAGIC) {
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warn("bad magic: 0x%x", eh.a_midmag);
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goto bad;
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}
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/*
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* We have to include the exec header in the beginning of
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* the buffer, and leave extra space at the end in case
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* the actual write to disk wants to skip the header.
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*/
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tdsize = eh.a_text + eh.a_data;
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bbsize = tdsize + sizeof(eh);
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bbsize = roundup(bbsize, DEV_BSIZE);
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/*
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* Allocate extra space here because the caller may copy
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* the boot block starting at the end of the exec header.
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* This prevents reading beyond the end of the buffer.
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*/
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if ((bp = calloc(bbsize + sizeof(eh), 1)) == NULL) {
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warnx("malloc: %s: no memory", fname);
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goto bad;
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}
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/* Copy the exec header and read the rest of the file. */
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memcpy(bp, &eh, sizeof(eh));
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if (read(fd, bp+sizeof(eh), tdsize) != tdsize) {
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warn("read: %s", fname);
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goto bad;
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}
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*size = bbsize; /* aligned to DEV_BSIZE */
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/* Calculate the symbols' locations within the proto file */
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off = N_DATOFF(eh) - N_DATADDR(eh) - (eh.a_entry - N_TXTADDR(eh));
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block_size_p = (int *) (bp + nl[X_BLOCK_SIZE ].n_value + off);
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block_count_p = (int *) (bp + nl[X_BLOCK_COUNT].n_value + off);
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block_table = (daddr_t *) (bp + nl[X_BLOCK_TABLE].n_value + off);
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maxblocknum = *block_count_p;
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if (verbose) {
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printf("%s: entry point %#x\n", fname, eh.a_entry);
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printf("proto bootblock size %ld\n", *size);
|
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printf("room for %d filesystem blocks at %#x\n",
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maxblocknum, nl[X_BLOCK_TABLE].n_value);
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}
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close(fd);
|
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if (!hflag)
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bp += sizeof(struct exec);
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return bp;
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|
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bad:
|
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if (bp)
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free(bp);
|
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if (fd >= 0)
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close(fd);
|
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return NULL;
|
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}
|
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|
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static void
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devread(fd, buf, blk, size, msg)
|
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int fd;
|
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void *buf;
|
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daddr_t blk;
|
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size_t size;
|
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char *msg;
|
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{
|
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if (lseek(fd, dbtob(blk), SEEK_SET) != dbtob(blk))
|
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err(1, "%s: devread: lseek", msg);
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|
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if (read(fd, buf, size) != size)
|
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err(1, "%s: devread: read", msg);
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}
|
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|
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static char sblock[SBSIZE];
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|
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int
|
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loadblocknums(boot, devfd)
|
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char *boot;
|
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int devfd;
|
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{
|
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int i, fd;
|
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struct stat statbuf;
|
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struct statfs statfsbuf;
|
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struct fs *fs;
|
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char *buf;
|
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daddr_t blk, *ap;
|
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struct dinode *ip;
|
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int ndb;
|
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|
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/*
|
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* Open 2nd-level boot program and record the block numbers
|
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* it occupies on the filesystem represented by `devfd'.
|
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*/
|
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|
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/* Make sure the (probably new) boot file is on disk. */
|
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sync(); sleep(1);
|
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|
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if ((fd = open(boot, O_RDONLY)) < 0)
|
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err(1, "open: %s", boot);
|
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|
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if (fstatfs(fd, &statfsbuf) != 0)
|
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err(1, "statfs: %s", boot);
|
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|
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if (strncmp(statfsbuf.f_fstypename, "ffs", MFSNAMELEN) &&
|
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strncmp(statfsbuf.f_fstypename, "ufs", MFSNAMELEN) ) {
|
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errx(1, "%s: must be on an FFS filesystem", boot);
|
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}
|
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|
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if (fsync(fd) != 0)
|
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err(1, "fsync: %s", boot);
|
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|
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if (fstat(fd, &statbuf) != 0)
|
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err(1, "fstat: %s", boot);
|
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|
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close(fd);
|
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|
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/* Read superblock */
|
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devread(devfd, sblock, SBLOCK, SBSIZE, "superblock");
|
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fs = (struct fs *)sblock;
|
||||
|
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/* Sanity-check super-block. */
|
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if (fs->fs_magic != FS_MAGIC)
|
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errx(1, "Bad magic number in superblock");
|
||||
if (fs->fs_inopb <= 0)
|
||||
err(1, "Bad inopb=%d in superblock", fs->fs_inopb);
|
||||
|
||||
/* Read inode */
|
||||
if ((buf = malloc(fs->fs_bsize)) == NULL)
|
||||
errx(1, "No memory for filesystem block");
|
||||
|
||||
blk = fsbtodb(fs, ino_to_fsba(fs, statbuf.st_ino));
|
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devread(devfd, buf, blk, fs->fs_bsize, "inode");
|
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ip = (struct dinode *)(buf) + ino_to_fsbo(fs, statbuf.st_ino);
|
||||
|
||||
/*
|
||||
* Have the inode. Figure out how many blocks we need.
|
||||
*/
|
||||
ndb = howmany(ip->di_size, fs->fs_bsize);
|
||||
if (ndb > maxblocknum)
|
||||
errx(1, "Too many blocks");
|
||||
*block_count_p = ndb;
|
||||
*block_size_p = fs->fs_bsize;
|
||||
if (verbose)
|
||||
printf("Will load %d blocks of size %d each.\n",
|
||||
ndb, fs->fs_bsize);
|
||||
|
||||
/*
|
||||
* Get the block numbers; we don't handle fragments
|
||||
*/
|
||||
ap = ip->di_db;
|
||||
for (i = 0; i < NDADDR && *ap && ndb; i++, ap++, ndb--) {
|
||||
blk = fsbtodb(fs, *ap);
|
||||
if (verbose)
|
||||
printf("%d: %d\n", i, blk);
|
||||
block_table[i] = blk;
|
||||
}
|
||||
if (ndb == 0)
|
||||
return 0;
|
||||
|
||||
/*
|
||||
* Just one level of indirections; there isn't much room
|
||||
* for more in the 1st-level bootblocks anyway.
|
||||
*/
|
||||
blk = fsbtodb(fs, ip->di_ib[0]);
|
||||
devread(devfd, buf, blk, fs->fs_bsize, "indirect block");
|
||||
ap = (daddr_t *)buf;
|
||||
for (; i < NINDIR(fs) && *ap && ndb; i++, ap++, ndb--) {
|
||||
blk = fsbtodb(fs, *ap);
|
||||
if (verbose)
|
||||
printf("%d: %d\n", i, blk);
|
||||
block_table[i] = blk;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user