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/types.h>
31 #include <sys/disklabel.h>
32 #include <sys/endian.h>
33 #include <sys/errno.h>
45 static struct mkimg_alias bsd_aliases[] = {
46 { ALIAS_FREEBSD_NANDFS, ALIAS_INT2TYPE(FS_NANDFS) },
47 { ALIAS_FREEBSD_SWAP, ALIAS_INT2TYPE(FS_SWAP) },
48 { ALIAS_FREEBSD_UFS, ALIAS_INT2TYPE(FS_BSDFFS) },
49 { ALIAS_FREEBSD_VINUM, ALIAS_INT2TYPE(FS_VINUM) },
50 { ALIAS_FREEBSD_ZFS, ALIAS_INT2TYPE(FS_ZFS) },
55 bsd_metadata(u_int where)
59 secs = BBSIZE / secsz;
60 return ((where == SCHEME_META_IMG_START) ? secs : 0);
64 bsd_write(int fd, lba_t imgsz, void *bootcode)
76 if (bootcode != NULL) {
77 memcpy(buf, bootcode, BBSIZE);
78 memset(buf + secsz, 0, secsz);
80 memset(buf, 0, BBSIZE);
82 imgsz = ncyls * nheads * nsecs;
83 ftruncate(fd, imgsz * secsz);
85 d = (void *)(buf + secsz);
86 le32enc(&d->d_magic, DISKMAGIC);
87 le32enc(&d->d_secsize, secsz);
88 le32enc(&d->d_nsectors, nsecs);
89 le32enc(&d->d_ntracks, nheads);
90 le32enc(&d->d_ncylinders, ncyls);
91 le32enc(&d->d_secpercyl, nsecs * nheads);
92 le32enc(&d->d_secperunit, imgsz);
93 le16enc(&d->d_rpm, 3600);
94 le32enc(&d->d_magic2, DISKMAGIC);
95 le16enc(&d->d_npartitions, (8 > nparts + 1) ? 8 : nparts + 1);
96 le32enc(&d->d_bbsize, BBSIZE);
98 dp = &d->d_partitions[RAW_PART];
99 le32enc(&dp->p_size, imgsz);
100 STAILQ_FOREACH(part, &partlist, link) {
101 n = part->index + ((part->index >= RAW_PART) ? 1 : 0);
102 dp = &d->d_partitions[n];
103 le32enc(&dp->p_size, part->size);
104 le32enc(&dp->p_offset, part->block);
105 dp->p_fstype = ALIAS_TYPE2INT(part->type);
108 dp = &d->d_partitions[nparts + 1];
110 for (p = buf; p < (u_char *)dp; p += 2)
111 checksum ^= le16dec(p);
112 le16enc(&d->d_checksum, checksum);
114 error = mkimg_seek(fd, 0);
116 if (write(fd, buf, BBSIZE) != BBSIZE)
123 static struct mkimg_scheme bsd_scheme = {
125 .description = "BSD disk label",
126 .aliases = bsd_aliases,
127 .metadata = bsd_metadata,
134 SCHEME_DEFINE(bsd_scheme);