/* $NetBSD: installboot.c,v 1.5.36.1 2024/07/03 18:38:53 martin Exp $ */ /*- * Copyright (c) 2005 Izumi Tsutsui. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #if HAVE_NBTOOL_CONFIG_H #include "nbtool_config.h" #endif #include #include #include #include #include #include #include #include #include "installboot.h" #define BSIZE 512 #define MAX_SB_SIZE (64 * 1024) /* XXX */ #define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) static void usage(void); static ib_params installboot_params; static struct ib_fs cd9660_fstype = { .name = "cd9660", .match = cd9660_match, .findstage2 = cd9660_findstage2 }; int main(int argc, char **argv) { ib_params *params; uint8_t *bb; struct apple_part_map_entry pme; size_t bbi; struct shared_bbinfo *bbinfop; off_t partoff; uint32_t nblk, maxblk, blk_i; int rv; ib_block *blocks; uint64_t block; setprogname(argv[0]); params = &installboot_params; memset(params, 0, sizeof(*params)); params->fsfd = -1; params->s1fd = -1; if (argc != 4) usage(); params->filesystem = argv[1]; params->fstype = &cd9660_fstype; if ((params->fsfd = open(params->filesystem, O_RDWR, 0600)) == -1) err(1, "Opening file system `%s' read", params->filesystem); if (fstat(params->fsfd, ¶ms->fsstat) == -1) err(1, "Examining file system `%s'", params->filesystem); if (!params->fstype->match(params)) errx(1, "File system `%s' is not of type %s", params->filesystem, params->fstype->name); #ifdef DEBUG printf("file system: %s, %ld bytes\n", params->filesystem, (long)params->fsstat.st_size); #endif /* * Find space for primary boot from the second (NetBSD_BootBlock) * partition. */ if (pread(params->fsfd, &pme, sizeof pme, BSIZE * 2) != sizeof(pme)) err(1, "read pme from file system `%s'", params->filesystem); if (strcmp((char *)pme.pmPartName, "NetBSD_BootBlock")) err(1, "invalid partition map in file system `%s'", params->filesystem); /* pmPyPartStart is written by mkisofs */ partoff = BSIZE * be32toh(pme.pmPyPartStart); #ifdef DEBUG printf("NetBSD partition offset = %ld\n", (long)partoff); #endif params->stage1 = argv[2]; if ((params->s1fd = open(params->stage1, O_RDONLY, 0600)) == -1) err(1, "Opening primary bootstrap `%s'", params->stage1); if (fstat(params->s1fd, ¶ms->s1stat) == -1) err(1, "Examining primary bootstrap `%s'", params->stage1); if (!S_ISREG(params->s1stat.st_mode)) err(1, "`%s' must be a regular file", params->stage1); if (params->s1stat.st_size > MACPPC_BOOT_BLOCK_MAX_SIZE) err(1, "primary bootrap `%s' too large (%ld bytes)", params->stage1, (long)params->s1stat.st_size); #ifdef DEBUG printf("primary boot: %s, %ld bytes\n", params->stage1, (long)params->s1stat.st_size); #endif params->stage2 = argv[3]; bb = calloc(1, MACPPC_BOOT_BLOCK_MAX_SIZE); if (bb == NULL) err(1, "Allocating %ul bytes for bbinfo", MACPPC_BOOT_BLOCK_MAX_SIZE); rv = read(params->s1fd, bb, params->s1stat.st_size); if (rv == -1) err(1, "Reading `%s'", params->stage1); if (memcmp(bb + 1, "ELF", strlen("ELF")) == 0) { warnx("`%s' is an ELF executable; need raw binary", params->stage1); } /* look for the bbinfo structure */ for (bbi = 0; bbi < MACPPC_BOOT_BLOCK_MAX_SIZE; bbi += sizeof(uint32_t)) { bbinfop = (void *)(bb + bbi); if (memcmp(bbinfop->bbi_magic, MACPPC_BBINFO_MAGIC, sizeof(bbinfop->bbi_magic)) == 0) { #ifdef DEBUG printf("magic found: %s\n", bbinfop->bbi_magic); #endif break; } } if (bbi >= MACPPC_BOOT_BLOCK_MAX_SIZE) err(1, "bbinfo structure not found in `%s'", params->stage1); maxblk = be32toh(bbinfop->bbi_block_count); if (maxblk == 0 || maxblk > (MACPPC_BOOT_BLOCK_MAX_SIZE / sizeof(uint32_t))) err(1, "bbinfo structure in `%s' has preposterous size `%u'", params->stage1, maxblk); blocks = malloc(sizeof(*blocks) * maxblk); if (blocks == NULL) { err(1, "Allocating %lu bytes for blocks", (unsigned long)sizeof(*blocks) * maxblk); } if (S_ISREG(params->fsstat.st_mode)) { if (fsync(params->fsfd) == -1) err(1, "Synchronising file system `%s'", params->filesystem); } nblk = maxblk; if (!params->fstype->findstage2(params, &nblk, blocks)) { exit(1); } bbinfop->bbi_block_count = htobe32(nblk); bbinfop->bbi_block_size = htobe32(blocks[0].blocksize); for (blk_i = 0; blk_i < nblk; blk_i++) { /* XXX bootxx assumes blocksize is 512 */ block = blocks[blk_i].block * (params->fstype->blocksize / 512); bbinfop->bbi_block_table[blk_i] = htobe32(block); if (blocks[blk_i].blocksize < blocks[0].blocksize && blk_i + 1 != nblk) { warnx("Secondary bootstrap `%s' blocks do not have " "a uniform size", params->stage2); exit(1); } } /* XXX no write option */ if (pwrite(params->fsfd, bb, MACPPC_BOOT_BLOCK_MAX_SIZE, partoff) != MACPPC_BOOT_BLOCK_MAX_SIZE) err(1, "write bootblock"); if (S_ISREG(params->fsstat.st_mode)) { if (fsync(params->fsfd) == -1) err(1, "Synchronising file system `%s'", params->filesystem); } free(bb); if (close(params->fsfd) == -1) err(1, "Closing file system `%s'", params->filesystem); if (close(params->s1fd) == -1) err(1, "Closing primary bootstrap `%s'", params->stage1); return 0; } static void usage(void) { const char *prog; prog = getprogname(); fprintf(stderr, "usage: %s hybrid-cd-image primary secondary\n", prog); exit(1); }