ed45ba76c7
all the options have been processed that they are supported my the specific system. Add i386 MD options (console, password, speed and timeout) (Approved by christos and lukem)
285 lines
8.4 KiB
C
285 lines
8.4 KiB
C
/* $NetBSD: bbinfo.c,v 1.8 2003/04/15 14:22:13 dsl Exp $ */
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/*-
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* Copyright (c) 1998, 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 Matt Fredette, Paul Kranenburg, and Luke Mewburn.
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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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#include <sys/cdefs.h>
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#if defined(__RCSID) && !defined(__lint)
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__RCSID("$NetBSD: bbinfo.c,v 1.8 2003/04/15 14:22:13 dsl 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 <string.h>
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#include <unistd.h>
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#include "installboot.h"
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int
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shared_bbinfo_clearboot(ib_params *params, struct bbinfo_params *bbparams,
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int (*callback)(ib_params *, struct bbinfo_params *, uint8_t *))
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{
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uint8_t *bb;
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ssize_t rv;
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int retval;
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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(bbparams != NULL);
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assert((strlen(bbparams->magic) + 1) == 32);
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retval = 0;
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if ((bb = malloc(bbparams->maxsize)) == NULL) {
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warn("Allocating %lu bytes for bbinfo",
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(unsigned long) bbparams->maxsize);
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goto done;
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}
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/* First check that it _could_ exist here */
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rv = pread(params->fsfd, bb, bbparams->maxsize, bbparams->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 != bbparams->maxsize) {
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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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/* Now clear out (past the header offset) */
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memset(bb + bbparams->headeroffset, 0,
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bbparams->maxsize - bbparams->headeroffset);
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if (callback != NULL && ! (*callback)(params, bbparams, bb))
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goto done;
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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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retval = 1;
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goto done;
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}
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rv = pwrite(params->fsfd, bb, bbparams->maxsize, bbparams->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 != bbparams->maxsize) {
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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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done:
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if (bb != NULL)
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free(bb);
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return (retval);
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}
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int
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shared_bbinfo_setboot(ib_params *params, struct bbinfo_params *bbparams,
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int (*callback)(ib_params *, struct bbinfo_params *, uint8_t *))
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{
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uint8_t *bb;
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int retval;
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ssize_t rv;
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size_t bbi;
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struct shared_bbinfo *bbinfop; /* bbinfo in prototype image */
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uint32_t maxblk, nblk, blk_i;
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ib_block *blocks;
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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->fstype != NULL);
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assert(params->s1fd != -1);
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assert(params->stage1 != NULL);
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assert(bbparams != NULL);
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assert((strlen(bbparams->magic) + 1) == 32);
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retval = 0;
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blocks = NULL;
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if ((bb = malloc(bbparams->maxsize)) == NULL) {
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warn("Allocating %lu bytes for bbinfo",
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(unsigned long) bbparams->maxsize);
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goto done;
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}
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if (params->stage2 == NULL) {
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warnx("Name of secondary bootstrap not provided");
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goto done;
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}
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if (params->s1stat.st_size >
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bbparams->maxsize - bbparams->headeroffset) {
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warnx("`%s' cannot be larger than %lu bytes",
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params->stage1, (unsigned long)(bbparams->maxsize -
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bbparams->headeroffset));
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goto done;
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}
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memset(bb, 0, bbparams->maxsize);
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rv = read(params->s1fd, bb + bbparams->headeroffset,
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bbparams->maxsize - bbparams->headeroffset);
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if (rv == -1) {
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warn("Reading `%s'", params->stage1);
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goto done;
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}
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/*
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* Quick sanity check that the bootstrap given
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* is *not* an ELF executable.
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*/
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if (memcmp(bb + bbparams->headeroffset + 1, "ELF", strlen("ELF"))
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== 0) {
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warnx("`%s' is an ELF executable; need raw binary",
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params->stage1);
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goto done;
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}
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#define HOSTTOTARGET32(x) ((bbparams->endian == BBINFO_LITTLE_ENDIAN) \
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? htole32((x)) : htobe32((x)))
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#define TARGET32TOHOST(x) ((bbparams->endian == BBINFO_LITTLE_ENDIAN) \
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? le32toh((x)) : be32toh((x)))
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/* Look for the bbinfo structure. */
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for (bbi = 0; bbi < bbparams->maxsize; bbi += sizeof(uint32_t)) {
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bbinfop = (void *) (bb + bbparams->headeroffset + bbi);
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if (memcmp(bbinfop->bbi_magic, bbparams->magic,
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sizeof(bbinfop->bbi_magic)) == 0)
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break;
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}
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if (bbi >= bbparams->maxsize) {
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warnx("%s bbinfo structure not found in `%s'",
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params->machine->name, params->stage1);
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goto done;
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}
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maxblk = TARGET32TOHOST(bbinfop->bbi_block_count);
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if (maxblk == 0 || maxblk > (bbparams->maxsize / sizeof(uint32_t))) {
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warnx("%s bbinfo structure in `%s' has preposterous size `%u'",
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params->machine->name, params->stage1, maxblk);
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goto done;
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}
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/* Allocate space for our block list. */
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blocks = malloc(sizeof(*blocks) * maxblk);
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if (blocks == NULL) {
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warn("Allocating %lu bytes",
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(unsigned long)sizeof(*blocks) * maxblk);
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goto done;
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}
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if (S_ISREG(params->fsstat.st_mode)) {
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if (fsync(params->fsfd) == -1)
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warn("Synchronising file system `%s'",
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params->filesystem);
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} else {
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/* Ensure the secondary bootstrap is on disk. */
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sync();
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}
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/* Collect the blocks for the secondary bootstrap. */
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nblk = maxblk;
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if (! params->fstype->findstage2(params, &nblk, blocks))
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goto done;
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if (nblk == 0) {
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warnx("Secondary bootstrap `%s' is empty",
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params->stage2);
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goto done;
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}
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/* Save those blocks in the primary bootstrap. */
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bbinfop->bbi_block_count = HOSTTOTARGET32(nblk);
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bbinfop->bbi_block_size = HOSTTOTARGET32(blocks[0].blocksize);
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for (blk_i = 0; blk_i < nblk; blk_i++) {
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bbinfop->bbi_block_table[blk_i] =
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HOSTTOTARGET32(blocks[blk_i].block);
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if (blocks[blk_i].blocksize < blocks[0].blocksize &&
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blk_i + 1 != nblk) {
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warnx("Secondary bootstrap `%s' blocks do not have "
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"a uniform size", params->stage2);
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goto done;
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}
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}
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if (callback != NULL && ! (*callback)(params, bbparams, bb))
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goto done;
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if (params->flags & IB_VERBOSE) {
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printf("Bootstrap start sector: %u\n",
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bbparams->offset / bbparams->blocksize);
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printf("Bootstrap byte count: %u\n", (unsigned)rv);
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printf("Bootstrap block table: "
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"%u entries of %u bytes available, %u used:",
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maxblk, blocks[0].blocksize, nblk);
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for (blk_i = 0; blk_i < nblk; blk_i++)
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printf(" %llu",
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(unsigned long long)blocks[blk_i].block);
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printf("\n%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, bb, bbparams->maxsize, bbparams->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 != bbparams->maxsize) {
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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 (blocks != NULL)
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free(blocks);
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if (bb != NULL)
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free(bb);
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return (retval);
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}
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