Pull sharable src/usr.sbin/installboot/cd9660.c.
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tsutsui
parent
2e1ec38629
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d01834fb75
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# $NetBSD: Makefile,v 1.12 2024/05/19 15:51:30 tsutsui Exp $
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# $NetBSD: Makefile,v 1.13 2024/05/24 10:13:44 tsutsui Exp $
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.include <bsd.hostinit.mk>
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HOSTPROG= macppc_installboot
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SRCS= installboot.c cd9660.c cd9660_util.c
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.PATH.c: ${NETBSDSRCDIR}/sys/fs/cd9660
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.PATH.c: ${NETBSDSRCDIR}/usr.sbin/installboot ${NETBSDSRCDIR}/sys/fs/cd9660
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HOST_CPPFLAGS+= -I. -I${.CURDIR}
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#HOST_CPPFLAGS+= -DDEBUG
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@ -1,234 +0,0 @@
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/* $NetBSD: cd9660.c,v 1.6 2024/05/19 15:52:34 tsutsui Exp $ */
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/*-
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* Copyright (c) 2005 Izumi Tsutsui. 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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*
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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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#if HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#endif
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#include <sys/cdefs.h>
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#if defined(__RCSID) && !defined(__lint)
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__RCSID("$NetBSD: cd9660.c,v 1.6 2024/05/19 15:52:34 tsutsui Exp $");
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#endif /* !__lint */
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#include <sys/param.h>
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#if !HAVE_NBTOOL_CONFIG_H
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#include <sys/mount.h>
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#endif
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#include <assert.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdarg.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 <dirent.h>
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#include <fs/cd9660/iso.h>
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#include <fs/cd9660/cd9660_extern.h>
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#include "installboot.h"
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#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
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#define MAXLEN 16
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int
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cd9660_match(ib_params *params)
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{
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int rv, blocksize;
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struct iso_primary_descriptor ipd;
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assert(params != NULL);
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assert(params->fstype != NULL);
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assert(params->fsfd != -1);
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rv = pread(params->fsfd, &ipd, sizeof(ipd),
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ISO_DEFAULT_BLOCK_SIZE * 16);
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if (rv == -1) {
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warn("Reading primary descriptor in `%s'", params->filesystem);
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return 0;
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} else if (rv != sizeof(ipd)) {
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warnx("Reading primary descriptor in `%s': short read",
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params->filesystem);
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return 0;
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}
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if (ipd.type[0] != ISO_VD_PRIMARY ||
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strncmp(ipd.id, ISO_STANDARD_ID, sizeof(ipd.id)) != 0 ||
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ipd.version[0] != 1) {
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warnx("Filesystem `%s' is not ISO9660 format",
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params->filesystem);
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return 0;
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}
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blocksize = isonum_723((u_char *)ipd.logical_block_size);
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if (blocksize != ISO_DEFAULT_BLOCK_SIZE) {
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warnx("Invalid blocksize %d in `%s'",
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blocksize, params->filesystem);
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return 0;
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}
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params->fstype->blocksize = blocksize;
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params->fstype->needswap = 0;
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return 1;
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}
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int
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cd9660_findstage2(ib_params *params, uint32_t *maxblk, ib_block *blocks)
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{
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uint8_t buf[ISO_DEFAULT_BLOCK_SIZE];
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char name[ISO_MAXNAMLEN];
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char *stage2;
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off_t loc;
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int rv, blocksize, found;
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u_int i;
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struct iso_primary_descriptor ipd;
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struct iso_directory_record *idr;
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assert(params != NULL);
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assert(params->stage2 != NULL);
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assert(maxblk != NULL);
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assert(blocks != NULL);
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#if 0
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if (params->flags & IB_STAGE2START)
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return hardcode_stage2(params, maxblk, blocks);
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#endif
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/* The secondary bootstrap must be clearly in /. */
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strlcpy(name, params->stage2, ISO_MAXNAMLEN);
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stage2 = name;
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if (stage2[0] == '/')
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stage2++;
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if (strchr(stage2, '/') != NULL) {
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warnx("The secondary bootstrap `%s' must be in / "
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"on filesystem `%s'", params->stage2, params->filesystem);
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return 0;
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}
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if (strchr(stage2, '.') == NULL) {
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/*
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* XXX should fix isofncmp()?
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*/
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strlcat(name, ".", ISO_MAXNAMLEN);
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}
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rv = pread(params->fsfd, &ipd, sizeof(ipd),
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ISO_DEFAULT_BLOCK_SIZE * 16);
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if (rv == -1) {
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warn("Reading primary descriptor in `%s'", params->filesystem);
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return 0;
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} else if (rv != sizeof(ipd)) {
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warnx("Reading primary descriptor in `%s': short read",
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params->filesystem);
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return 0;
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}
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blocksize = isonum_723((u_char *)ipd.logical_block_size);
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idr = (void *)ipd.root_directory_record;
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loc = (off_t)isonum_733(idr->extent) * blocksize;
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rv = pread(params->fsfd, buf, blocksize, loc);
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if (rv == -1) {
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warn("Reading root directory record in `%s'",
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params->filesystem);
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return 0;
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} else if (rv != sizeof(ipd)) {
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warnx("Reading root directory record in `%s': short read",
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params->filesystem);
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return 0;
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}
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found = 0;
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for (i = 0; i < blocksize - sizeof(struct iso_directory_record);
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i += (u_char)idr->length[0]) {
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idr = (void *)&buf[i];
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#ifdef DEBUG
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printf("i = %d, idr->length[0] = %3d\n",
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i, (u_char)idr->length[0]);
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#endif
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/* check end of entries */
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if (idr->length[0] == 0) {
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#ifdef DEBUG
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printf("end of entries\n");
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#endif
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break;
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}
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if (idr->flags[0] & 2) {
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/* skip directory entries */
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#ifdef DEBUG
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printf("skip directory entry\n");
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#endif
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continue;
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}
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if (idr->name_len[0] == 1 &&
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(idr->name[0] == 0 || idr->name[0] == 1)) {
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/* skip "." and ".." */
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#ifdef DEBUG
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printf("skip dot dot\n");
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#endif
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continue;
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}
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#ifdef DEBUG
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{
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int j;
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printf("filename:");
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for (j = 0; j < isonum_711(idr->name_len); j++)
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printf("%c", idr->name[j]);
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printf("\n");
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}
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#endif
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if (isofncmp((u_char *)stage2, strlen(stage2),
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(u_char *)idr->name,
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isonum_711((u_char *)idr->name_len), 0) == 0) {
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found = 1;
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/* ISO filesystem always has contiguous file blocks */
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blocks[0].block = (int64_t)isonum_733(idr->extent);
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blocks[0].blocksize =
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roundup(isonum_733(idr->size), blocksize);
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*maxblk = 1;
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#ifdef DEBUG
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printf("block = %ld, blocksize = %ld\n",
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(long)blocks[0].block, blocks[0].blocksize);
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#endif
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break;
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}
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}
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if (found == 0) {
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warnx("Can't find secondary bootstrap `%s' in filesystem `%s'",
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params->stage2, 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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