2 * volume_id - reads filesystem label and uuid
4 * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 //kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_UFS) += ufs.o
24 //config:### config FEATURE_VOLUMEID_UFS
25 //config:### bool "ufs filesystem"
26 //config:### default y
27 //config:### depends on VOLUMEID
32 #include "volume_id_internal.h"
34 struct ufs_super_block
{
57 uint32_t fs_maxcontig
;
59 uint32_t fs_fragshift
;
68 uint32_t fs_npsect_state
;
69 uint32_t fs_interleave
;
70 uint32_t fs_trackskew
;
97 uint32_t fs_maxcluster
;
99 uint16_t fs_opostbl
[16][8];
102 int8_t fs_fsmnt
[468];
103 uint8_t fs_volname
[32];
107 uint32_t fs_ocsp
[28];
108 uint32_t fs_contigdirs
;
110 uint32_t fs_maxcluster
;
114 int64_t fs_sparecon64
[17];
115 int64_t fs_sblockloc
;
116 struct ufs2_csum_total
{
121 uint64_t cs_numclusters
;
122 uint64_t cs_spare
[3];
131 int64_t fs_pendingblocks
;
132 int32_t fs_pendinginodes
;
137 int32_t fs_sparecon
[53];
139 int32_t fs_sparecon2
[1];
141 uint32_t fs_qbmask
[2];
142 uint32_t fs_qfmask
[2];
145 int32_t fs_sparecon
[53];
147 int32_t fs_sparecon2
[1];
149 uint32_t fs_qbmask
[2];
150 uint32_t fs_qfmask
[2];
153 int32_t fs_sparecon
[50];
154 int32_t fs_contigsumsize
;
155 int32_t fs_maxsymlinklen
;
157 uint32_t fs_maxfilesize
[2];
158 uint32_t fs_qbmask
[2];
159 uint32_t fs_qfmask
[2];
163 int32_t fs_postblformat
;
165 int32_t fs_postbloff
;
171 #define UFS_MAGIC 0x00011954
172 #define UFS2_MAGIC 0x19540119
173 #define UFS_MAGIC_FEA 0x00195612
174 #define UFS_MAGIC_LFN 0x00095014
176 int FAST_FUNC
volume_id_probe_ufs(struct volume_id
*id
, uint64_t off
)
178 static const short offsets
[] = { 0, 8, 64, 256 };
182 struct ufs_super_block
*ufs
;
184 dbg("probing at offset 0x%llx", (unsigned long long) off
);
186 for (i
= 0; i
< ARRAY_SIZE(offsets
); i
++) {
187 ufs
= volume_id_get_buffer(id
, off
+ (offsets
[i
] * 0x400), 0x800);
191 dbg("offset 0x%x", offsets
[i
] * 0x400);
192 magic
= ufs
->fs_magic
;
193 if ((magic
== cpu_to_be32(UFS_MAGIC
))
194 || (magic
== cpu_to_be32(UFS2_MAGIC
))
195 || (magic
== cpu_to_be32(UFS_MAGIC_FEA
))
196 || (magic
== cpu_to_be32(UFS_MAGIC_LFN
))
198 dbg("magic 0x%08x(be)", magic
);
201 if ((magic
== cpu_to_le32(UFS_MAGIC
))
202 || (magic
== cpu_to_le32(UFS2_MAGIC
))
203 || (magic
== cpu_to_le32(UFS_MAGIC_FEA
))
204 || (magic
== cpu_to_le32(UFS_MAGIC_LFN
))
206 dbg("magic 0x%08x(le)", magic
);
213 // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);