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
40 static 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
51 static lba_t
apm_metadata(u_int where,lba_t blk)52 apm_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
59 static int
apm_write(lba_t imgsz,void * bootcode __unused)60 apm_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
103 static 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
114 SCHEME_DEFINE(apm_scheme);
115