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__FBSDID("$FreeBSD$");
29
30#include <sys/types.h>
31#include <sys/apm.h>
32#include <sys/endian.h>
33#include <sys/errno.h>
34#include <stdlib.h>
35#include <string.h>
36#include <unistd.h>
37
38#include "image.h"
39#include "mkimg.h"
40#include "scheme.h"
41
42#ifndef APM_ENT_TYPE_APPLE_BOOT
43#define	APM_ENT_TYPE_APPLE_BOOT		"Apple_Bootstrap"
44#endif
45#ifndef APM_ENT_TYPE_FREEBSD_NANDFS
46#define	APM_ENT_TYPE_FREEBSD_NANDFS	"FreeBSD-nandfs"
47#endif
48
49static struct mkimg_alias apm_aliases[] = {
50    {	ALIAS_FREEBSD, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD) },
51    {	ALIAS_FREEBSD_BOOT, ALIAS_PTR2TYPE(APM_ENT_TYPE_APPLE_BOOT) },
52    {	ALIAS_FREEBSD_NANDFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_NANDFS) },
53    {	ALIAS_FREEBSD_SWAP, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_SWAP) },
54    {	ALIAS_FREEBSD_UFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_UFS) },
55    {	ALIAS_FREEBSD_VINUM, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_VINUM) },
56    {	ALIAS_FREEBSD_ZFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_ZFS) },
57    {	ALIAS_NONE, 0 }
58};
59
60static lba_t
61apm_metadata(u_int where, lba_t blk)
62{
63
64	blk += (where == SCHEME_META_IMG_START) ? nparts + 2 : 0;
65	return (round_block(blk));
66}
67
68static int
69apm_write(lba_t imgsz, void *bootcode __unused)
70{
71	u_char *buf;
72	struct apm_ddr *ddr;
73	struct apm_ent *ent;
74	struct part *part;
75	int error;
76
77	buf = calloc(nparts + 2, secsz);
78	if (buf == NULL)
79		return (ENOMEM);
80	ddr = (void *)buf;
81	be16enc(&ddr->ddr_sig, APM_DDR_SIG);
82	be16enc(&ddr->ddr_blksize, secsz);
83	be32enc(&ddr->ddr_blkcount, imgsz);
84
85	/* partition entry for the partition table itself. */
86	ent = (void *)(buf + secsz);
87	be16enc(&ent->ent_sig, APM_ENT_SIG);
88	be32enc(&ent->ent_pmblkcnt, nparts + 1);
89	be32enc(&ent->ent_start, 1);
90	be32enc(&ent->ent_size, nparts + 1);
91	strncpy(ent->ent_type, APM_ENT_TYPE_SELF, sizeof(ent->ent_type));
92	strncpy(ent->ent_name, "Apple", sizeof(ent->ent_name));
93
94	STAILQ_FOREACH(part, &partlist, link) {
95		ent = (void *)(buf + (part->index + 2) * secsz);
96		be16enc(&ent->ent_sig, APM_ENT_SIG);
97		be32enc(&ent->ent_pmblkcnt, nparts + 1);
98		be32enc(&ent->ent_start, part->block);
99		be32enc(&ent->ent_size, part->size);
100		strncpy(ent->ent_type, ALIAS_TYPE2PTR(part->type),
101		    sizeof(ent->ent_type));
102		if (part->label != NULL)
103			strncpy(ent->ent_name, part->label,
104			    sizeof(ent->ent_name));
105	}
106
107	error = image_write(0, buf, nparts + 2);
108	free(buf);
109	return (error);
110}
111
112static struct mkimg_scheme apm_scheme = {
113	.name = "apm",
114	.description = "Apple Partition Map",
115	.aliases = apm_aliases,
116	.metadata = apm_metadata,
117	.write = apm_write,
118	.nparts = 4096,
119	.labellen = APM_ENT_NAMELEN - 1,
120	.maxsecsz = 4096
121};
122
123SCHEME_DEFINE(apm_scheme);
124