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
20 //config:### config FEATURE_VOLUMEID_UFS
21 //config:### bool "ufs filesystem"
22 //config:### default y
23 //config:### depends on VOLUMEID
25 //kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_UFS) += ufs.o
27 #include "volume_id_internal.h"
29 struct ufs_super_block {
52 uint32_t fs_maxcontig;
54 uint32_t fs_fragshift;
63 uint32_t fs_npsect_state;
64 uint32_t fs_interleave;
65 uint32_t fs_trackskew;
92 uint32_t fs_maxcluster;
94 uint16_t fs_opostbl[16][8];
98 uint8_t fs_volname[32];
102 uint32_t fs_ocsp[28];
103 uint32_t fs_contigdirs;
105 uint32_t fs_maxcluster;
109 int64_t fs_sparecon64[17];
110 int64_t fs_sblockloc;
111 struct ufs2_csum_total {
116 uint64_t cs_numclusters;
117 uint64_t cs_spare[3];
126 int64_t fs_pendingblocks;
127 int32_t fs_pendinginodes;
132 int32_t fs_sparecon[53];
134 int32_t fs_sparecon2[1];
136 uint32_t fs_qbmask[2];
137 uint32_t fs_qfmask[2];
140 int32_t fs_sparecon[53];
142 int32_t fs_sparecon2[1];
144 uint32_t fs_qbmask[2];
145 uint32_t fs_qfmask[2];
148 int32_t fs_sparecon[50];
149 int32_t fs_contigsumsize;
150 int32_t fs_maxsymlinklen;
152 uint32_t fs_maxfilesize[2];
153 uint32_t fs_qbmask[2];
154 uint32_t fs_qfmask[2];
158 int32_t fs_postblformat;
160 int32_t fs_postbloff;
166 #define UFS_MAGIC 0x00011954
167 #define UFS2_MAGIC 0x19540119
168 #define UFS_MAGIC_FEA 0x00195612
169 #define UFS_MAGIC_LFN 0x00095014
171 int FAST_FUNC volume_id_probe_ufs(struct volume_id *id, uint64_t off)
173 static const short offsets[] = { 0, 8, 64, 256 };
177 struct ufs_super_block *ufs;
179 dbg("probing at offset 0x%llx", (unsigned long long) off);
181 for (i = 0; i < ARRAY_SIZE(offsets); i++) {
182 ufs = volume_id_get_buffer(id, off + (offsets[i] * 0x400), 0x800);
186 dbg("offset 0x%x", offsets[i] * 0x400);
187 magic = ufs->fs_magic;
188 if ((magic == cpu_to_be32(UFS_MAGIC))
189 || (magic == cpu_to_be32(UFS2_MAGIC))
190 || (magic == cpu_to_be32(UFS_MAGIC_FEA))
191 || (magic == cpu_to_be32(UFS_MAGIC_LFN))
193 dbg("magic 0x%08x(be)", magic);
196 if ((magic == cpu_to_le32(UFS_MAGIC))
197 || (magic == cpu_to_le32(UFS2_MAGIC))
198 || (magic == cpu_to_le32(UFS_MAGIC_FEA))
199 || (magic == cpu_to_le32(UFS_MAGIC_LFN))
201 dbg("magic 0x%08x(le)", magic);
208 // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);