932b752477
and use instead of replicating the effort in various locations - if filesystem is not a regular file, use sync(2) instead of fsync(2) after the bootstrap has been written - move <sys/stat.h> and <stdint.h> into "installboot.h"
350 lines
10 KiB
C
350 lines
10 KiB
C
/* $NetBSD: vax.c,v 1.8 2002/05/15 02:18:24 lukem Exp $ */
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/*-
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* Copyright (c) 1999, 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Simon Burge.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Luke Mewburn of Wasabi Systems.
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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 the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1999 Christopher G. Demetriou. 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 Christopher G. Demetriou
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* for the NetBSD Project.
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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/cdefs.h>
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#if defined(__RCSID) && !defined(__lint)
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__RCSID("$NetBSD: vax.c,v 1.8 2002/05/15 02:18:24 lukem Exp $");
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#endif /* !__lint */
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/param.h>
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#include <assert.h>
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#include <err.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "installboot.h"
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static int load_bootstrap(ib_params *, char **,
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uint32_t *, uint32_t *, size_t *);
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int
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vax_parseopt(ib_params *params, const char *option)
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{
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if (parseoptionflag(params, option, IB_APPEND | IB_SUNSUM))
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return (1);
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warnx("Unknown -o option `%s'", option);
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return (0);
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}
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int
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vax_clearboot(ib_params *params)
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{
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struct vax_boot_block bb;
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ssize_t rv;
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assert(params != NULL);
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assert(params->fsfd != -1);
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assert(params->filesystem != NULL);
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assert(sizeof(struct vax_boot_block) == VAX_BOOT_BLOCK_BLOCKSIZE);
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if (params->flags & (IB_STAGE1START | IB_APPEND)) {
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warnx("Can't use `-b bno' or `-o append' with `-c'");
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return (0);
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}
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if (params->flags & IB_STAGE2START) {
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warnx("`-B bno' is not supported for %s",
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params->machine->name);
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return (0);
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}
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rv = pread(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET);
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if (rv == -1) {
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warn("Reading `%s'", params->filesystem);
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return (0);
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} else if (rv != sizeof(bb)) {
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warnx("Reading `%s': short read", params->filesystem);
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return (0);
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}
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if (bb.bb_id_offset * 2 != offsetof(struct vax_boot_block, bb_magic1)
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|| bb.bb_magic1 != VAX_BOOT_MAGIC1) {
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warnx(
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"Old boot block magic number invalid; boot block invalid");
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return (0);
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}
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bb.bb_id_offset = 1;
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bb.bb_mbone = 0;
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bb.bb_lbn_hi = 0;
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bb.bb_lbn_low = 0;
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if (params->flags & IB_SUNSUM) {
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uint16_t sum;
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sum = compute_sunsum((uint16_t *)&bb);
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if (! set_sunsum(params, (uint16_t *)&bb, sum))
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return (0);
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}
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if (params->flags & IB_VERBOSE)
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printf("%slearing boot block\n",
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(params->flags & IB_NOWRITE) ? "Not c" : "C");
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if (params->flags & IB_NOWRITE)
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return (1);
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rv = pwrite(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET);
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if (rv == -1) {
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warn("Writing `%s'", params->filesystem);
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return (0);
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} else if (rv != sizeof(bb)) {
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warnx("Writing `%s': short write", params->filesystem);
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return (0);
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}
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return (1);
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}
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int
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vax_setboot(ib_params *params)
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{
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struct stat bootstrapsb;
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struct vax_boot_block bb;
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uint32_t startblock;
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int retval;
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char *bootstrapbuf;
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size_t bootstrapsize;
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uint32_t bootstrapload, bootstrapexec;
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ssize_t rv;
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assert(params != NULL);
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assert(params->fsfd != -1);
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assert(params->filesystem != NULL);
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assert(params->s1fd != -1);
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assert(params->stage1 != NULL);
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assert(sizeof(struct vax_boot_block) == VAX_BOOT_BLOCK_BLOCKSIZE);
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retval = 0;
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bootstrapbuf = NULL;
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if ((params->flags & IB_STAGE1START) &&
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(params->flags & IB_APPEND)) {
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warnx("Can't use `-b bno' with `-o append'");
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goto done;
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}
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if (params->flags & IB_STAGE2START) {
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warnx("`-B bno' is not supported for %s",
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params->machine->name);
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goto done;
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}
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if (fstat(params->s1fd, &bootstrapsb) == -1) {
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warn("Examining `%s'", params->stage1);
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goto done;
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}
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if (!S_ISREG(bootstrapsb.st_mode)) {
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warnx("`%s' must be a regular file", params->stage1);
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goto done;
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}
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if (! load_bootstrap(params, &bootstrapbuf, &bootstrapload,
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&bootstrapexec, &bootstrapsize))
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goto done;
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rv = pread(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET);
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if (rv == -1) {
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warn("Reading `%s'", params->filesystem);
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goto done;
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} else if (rv != sizeof(bb)) {
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warnx("Reading `%s': short read", params->filesystem);
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goto done;
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}
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/* fill in the updated boot block fields */
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if (params->flags & IB_APPEND) {
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struct stat filesyssb;
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if (fstat(params->fsfd, &filesyssb) == -1) {
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warn("Examining `%s'", params->filesystem);
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goto done;
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}
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if (!S_ISREG(filesyssb.st_mode)) {
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warnx(
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"`%s' must be a regular file to append a bootstrap",
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params->filesystem);
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goto done;
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}
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startblock = howmany(filesyssb.st_size,
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VAX_BOOT_BLOCK_BLOCKSIZE);
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} else if (params->flags & IB_STAGE1START) {
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startblock = params->s1start;
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} else {
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startblock = VAX_BOOT_BLOCK_OFFSET / VAX_BOOT_BLOCK_BLOCKSIZE
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+ 1;
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}
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bb.bb_id_offset = offsetof(struct vax_boot_block, bb_magic1) / 2;
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bb.bb_mbone = 1;
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bb.bb_lbn_hi = htole16((uint16_t) (startblock >> 16));
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bb.bb_lbn_low = htole16((uint16_t) (startblock >> 0));
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/*
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* Now the identification block
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*/
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bb.bb_magic1 = VAX_BOOT_MAGIC1;
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bb.bb_mbz1 = 0;
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bb.bb_sum1 = ~(bb.bb_magic1 + bb.bb_mbz1 + bb.bb_pad1);
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bb.bb_mbz2 = 0;
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bb.bb_volinfo = VAX_BOOT_VOLINFO_NONE;
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bb.bb_pad2a = 0;
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bb.bb_pad2b = 0;
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bb.bb_size = htole32(bootstrapsize / VAX_BOOT_BLOCK_BLOCKSIZE);
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bb.bb_load = htole32(VAX_BOOT_LOAD);
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bb.bb_entry = htole32(VAX_BOOT_ENTRY);
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bb.bb_sum3 = htole32(le32toh(bb.bb_size) + le32toh(bb.bb_load) \
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+ le32toh(bb.bb_entry));
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if (params->flags & IB_SUNSUM) {
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uint16_t sum;
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sum = compute_sunsum((uint16_t *)&bb);
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if (! set_sunsum(params, (uint16_t *)&bb, sum))
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goto done;
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}
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if (params->flags & IB_VERBOSE) {
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printf("Bootstrap start sector: %u\n", startblock);
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printf("Bootstrap sector count: %u\n", le32toh(bb.bb_size));
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printf("%sriting bootstrap\n",
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(params->flags & IB_NOWRITE) ? "Not w" : "W");
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}
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if (params->flags & IB_NOWRITE) {
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retval = 1;
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goto done;
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}
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rv = pwrite(params->fsfd, bootstrapbuf, bootstrapsize,
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startblock * VAX_BOOT_BLOCK_BLOCKSIZE);
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if (rv == -1) {
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warn("Writing `%s'", params->filesystem);
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goto done;
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} else if (rv != bootstrapsize) {
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warnx("Writing `%s': short write", params->filesystem);
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goto done;
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}
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if (params->flags & IB_VERBOSE)
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printf("Writing boot block\n");
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rv = pwrite(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET);
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if (rv == -1) {
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warn("Writing `%s'", params->filesystem);
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goto done;
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} else if (rv != sizeof(bb)) {
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warnx("Writing `%s': short write", params->filesystem);
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goto done;
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} else {
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retval = 1;
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}
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done:
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if (bootstrapbuf)
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free(bootstrapbuf);
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return (retval);
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}
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static int
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load_bootstrap(ib_params *params, char **data,
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uint32_t *loadaddr, uint32_t *execaddr, size_t *len)
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{
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ssize_t cc;
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size_t buflen;
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buflen = 512 * (VAX_BOOT_SIZE + 1);
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*data = malloc(buflen);
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if (*data == NULL) {
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warn("Allocating %lu bytes", (unsigned long) buflen);
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return (0);
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}
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cc = pread(params->s1fd, *data, buflen, 0);
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if (cc <= 0) {
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warn("Reading `%s'", params->stage1);
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return (0);
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}
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if (cc > 512 * VAX_BOOT_SIZE) {
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warnx("`%s': too large", params->stage1);
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return (0);
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}
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*len = roundup(cc, VAX_BOOT_BLOCK_BLOCKSIZE);
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*loadaddr = VAX_BOOT_LOAD;
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*execaddr = VAX_BOOT_ENTRY;
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return (1);
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}
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