2 * Copyright (c) 2014 Juniper Networks, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/errno.h>
43 static struct mkimg_alias bsd_aliases[] = {
44 { ALIAS_FREEBSD_NANDFS, ALIAS_INT2TYPE(FS_NANDFS) },
45 { ALIAS_FREEBSD_SWAP, ALIAS_INT2TYPE(FS_SWAP) },
46 { ALIAS_FREEBSD_UFS, ALIAS_INT2TYPE(FS_BSDFFS) },
47 { ALIAS_FREEBSD_VINUM, ALIAS_INT2TYPE(FS_VINUM) },
48 { ALIAS_FREEBSD_ZFS, ALIAS_INT2TYPE(FS_ZFS) },
53 bsd_metadata(u_int where, lba_t blk)
56 if (where == SCHEME_META_IMG_START)
57 blk += BSD_BOOTBLOCK_SIZE / secsz;
58 else if (where == SCHEME_META_IMG_END)
59 blk = round_cylinder(blk);
61 blk = round_block(blk);
66 bsd_write(lba_t imgsz, void *bootcode)
72 int bsdparts, error, n;
75 buf = malloc(BSD_BOOTBLOCK_SIZE);
78 if (bootcode != NULL) {
79 memcpy(buf, bootcode, BSD_BOOTBLOCK_SIZE);
80 memset(buf + secsz, 0, sizeof(struct disklabel));
82 memset(buf, 0, BSD_BOOTBLOCK_SIZE);
84 bsdparts = nparts + 1; /* Account for c partition */
85 if (bsdparts < BSD_NPARTS_MIN)
86 bsdparts = BSD_NPARTS_MIN;
88 d = (void *)(buf + secsz);
89 le32enc(&d->d_magic, BSD_MAGIC);
90 le32enc(&d->d_secsize, secsz);
91 le32enc(&d->d_nsectors, nsecs);
92 le32enc(&d->d_ntracks, nheads);
93 le32enc(&d->d_ncylinders, ncyls);
94 le32enc(&d->d_secpercyl, nsecs * nheads);
95 le32enc(&d->d_secperunit, imgsz);
96 le16enc(&d->d_rpm, 3600);
97 le32enc(&d->d_magic2, BSD_MAGIC);
98 le16enc(&d->d_npartitions, bsdparts);
99 le32enc(&d->d_bbsize, BSD_BOOTBLOCK_SIZE);
101 dp = &d->d_partitions[BSD_PART_RAW];
102 le32enc(&dp->p_size, imgsz);
103 TAILQ_FOREACH(part, &partlist, link) {
104 n = part->index + ((part->index >= BSD_PART_RAW) ? 1 : 0);
105 dp = &d->d_partitions[n];
106 le32enc(&dp->p_size, part->size);
107 le32enc(&dp->p_offset, part->block);
108 le32enc(&dp->p_fsize, 0);
109 dp->p_fstype = ALIAS_TYPE2INT(part->type);
111 le16enc(&dp->p_cpg, 0);
114 dp = &d->d_partitions[bsdparts];
116 for (p = (void *)d; p < (u_char *)dp; p += 2)
117 checksum ^= le16dec(p);
118 le16enc(&d->d_checksum, checksum);
120 error = image_write(0, buf, BSD_BOOTBLOCK_SIZE / secsz);
125 static struct mkimg_scheme bsd_scheme = {
127 .description = "BSD disk label",
128 .aliases = bsd_aliases,
129 .metadata = bsd_metadata,
131 .nparts = BSD_NPARTS_MAX - 1,
132 .bootcode = BSD_BOOTBLOCK_SIZE,
136 SCHEME_DEFINE(bsd_scheme);