1/*-
2 * Copyright (c) 2014 Juniper Networks, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28#include <sys/errno.h>
29#include <stdint.h>
30#include <stdlib.h>
31#include <string.h>
32
33#include <apm.h>
34
35#include "endian.h"
36#include "image.h"
37#include "mkimg.h"
38#include "scheme.h"
39
40static struct mkimg_alias apm_aliases[] = {
41    {	ALIAS_FREEBSD, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD) },
42    {	ALIAS_FREEBSD_BOOT, ALIAS_PTR2TYPE(APM_ENT_TYPE_APPLE_BOOT) },
43    {	ALIAS_FREEBSD_NANDFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_NANDFS) },
44    {	ALIAS_FREEBSD_SWAP, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_SWAP) },
45    {	ALIAS_FREEBSD_UFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_UFS) },
46    {	ALIAS_FREEBSD_VINUM, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_VINUM) },
47    {	ALIAS_FREEBSD_ZFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_ZFS) },
48    {	ALIAS_NONE, 0 }
49};
50
51static lba_t
52apm_metadata(u_int where, lba_t blk)
53{
54
55	blk += (where == SCHEME_META_IMG_START) ? nparts + 2 : 0;
56	return (round_block(blk));
57}
58
59static int
60apm_write(lba_t imgsz, void *bootcode __unused)
61{
62	u_char *buf;
63	struct apm_ddr *ddr;
64	struct apm_ent *ent;
65	struct part *part;
66	int error;
67
68	buf = calloc(nparts + 2, secsz);
69	if (buf == NULL)
70		return (ENOMEM);
71	ddr = (void *)buf;
72	be16enc(&ddr->ddr_sig, APM_DDR_SIG);
73	be16enc(&ddr->ddr_blksize, secsz);
74	be32enc(&ddr->ddr_blkcount, imgsz);
75
76	/* partition entry for the partition table itself. */
77	ent = (void *)(buf + secsz);
78	be16enc(&ent->ent_sig, APM_ENT_SIG);
79	be32enc(&ent->ent_pmblkcnt, nparts + 1);
80	be32enc(&ent->ent_start, 1);
81	be32enc(&ent->ent_size, nparts + 1);
82	strncpy(ent->ent_type, APM_ENT_TYPE_SELF, sizeof(ent->ent_type));
83	strncpy(ent->ent_name, "Apple", sizeof(ent->ent_name));
84
85	TAILQ_FOREACH(part, &partlist, link) {
86		ent = (void *)(buf + (part->index + 2) * secsz);
87		be16enc(&ent->ent_sig, APM_ENT_SIG);
88		be32enc(&ent->ent_pmblkcnt, nparts + 1);
89		be32enc(&ent->ent_start, part->block);
90		be32enc(&ent->ent_size, part->size);
91		strncpy(ent->ent_type, ALIAS_TYPE2PTR(part->type),
92		    sizeof(ent->ent_type));
93		if (part->label != NULL)
94			strncpy(ent->ent_name, part->label,
95			    sizeof(ent->ent_name));
96	}
97
98	error = image_write(0, buf, nparts + 2);
99	free(buf);
100	return (error);
101}
102
103static struct mkimg_scheme apm_scheme = {
104	.name = "apm",
105	.description = "Apple Partition Map",
106	.aliases = apm_aliases,
107	.metadata = apm_metadata,
108	.write = apm_write,
109	.nparts = 4096,
110	.labellen = APM_ENT_NAMELEN - 1,
111	.maxsecsz = 4096
112};
113
114SCHEME_DEFINE(apm_scheme);
115