120 lines
3.7 KiB
C
120 lines
3.7 KiB
C
/*-
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* Copyright (c) 2014 Juniper Networks, Inc.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/apm.h>
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#include <sys/endian.h>
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#include <sys/errno.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 "mkimg.h"
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#include "scheme.h"
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static struct mkimg_alias apm_aliases[] = {
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{ ALIAS_FREEBSD, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD) },
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{ ALIAS_FREEBSD_NANDFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_NANDFS) },
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{ ALIAS_FREEBSD_SWAP, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_SWAP) },
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{ ALIAS_FREEBSD_UFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_UFS) },
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{ ALIAS_FREEBSD_VINUM, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_VINUM) },
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{ ALIAS_FREEBSD_ZFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_ZFS) },
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{ ALIAS_NONE, 0 }
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};
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static u_int
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apm_metadata(u_int where)
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{
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u_int secs;
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secs = (where == SCHEME_META_IMG_START) ? nparts + 2 : 0;
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return (secs);
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}
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static int
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apm_write(int fd __unused, lba_t imgsz __unused, void *bootcode __unused)
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{
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u_char *buf;
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struct apm_ddr *ddr;
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struct apm_ent *ent;
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struct part *part;
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ssize_t nbytes;
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int error;
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buf = calloc(nparts + 2, secsz);
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if (buf == NULL)
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return (ENOMEM);
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ddr = (void *)buf;
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be16enc(&ddr->ddr_sig, APM_DDR_SIG);
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be16enc(&ddr->ddr_blksize, secsz);
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be32enc(&ddr->ddr_blkcount, imgsz);
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/* partition entry for the partition table itself. */
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ent = (void *)(buf + secsz);
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be16enc(&ent->ent_sig, APM_ENT_SIG);
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be32enc(&ent->ent_pmblkcnt, nparts + 1);
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be32enc(&ent->ent_start, 1);
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be32enc(&ent->ent_size, nparts + 1);
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strcpy(ent->ent_type, APM_ENT_TYPE_SELF);
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strcpy(ent->ent_name, "Apple");
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STAILQ_FOREACH(part, &partlist, link) {
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ent = (void *)(buf + (part->index + 2) * secsz);
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be16enc(&ent->ent_sig, APM_ENT_SIG);
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be32enc(&ent->ent_pmblkcnt, nparts + 1);
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be32enc(&ent->ent_start, part->block);
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be32enc(&ent->ent_size, part->size);
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strcpy(ent->ent_type, ALIAS_TYPE2PTR(part->type));
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if (part->label != NULL)
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strcpy(ent->ent_name, part->label);
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}
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error = mkimg_seek(fd, 0);
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if (error == 0) {
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nbytes = (nparts + 2) * secsz;
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if (write(fd, buf, nbytes) != nbytes)
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error = errno;
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}
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free(buf);
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return (error);
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}
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static struct mkimg_scheme apm_scheme = {
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.name = "apm",
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.description = "Apple Partition Map",
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.aliases = apm_aliases,
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.metadata = apm_metadata,
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.write = apm_write,
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.nparts = 4096,
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.labellen = APM_ENT_NAMELEN - 1,
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.maxsecsz = 4096
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};
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SCHEME_DEFINE(apm_scheme);
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