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20#ifndef __EXT_COMMON__
21#define __EXT_COMMON__
22
23#include <compiler.h>
24
25struct cmd_tbl;
26
27#define SECTOR_SIZE 0x200
28#define LOG2_SECTOR_SIZE 9
29
30
31#define EXT2_MAGIC 0xEF53
32
33#define INDIRECT_BLOCKS 12
34
35#define EXT2_PATH_MAX 4096
36
37#define EXT2_MAX_SYMLINKCNT 8
38
39
40#define FILETYPE_UNKNOWN 0
41#define FILETYPE_REG 1
42#define FILETYPE_DIRECTORY 2
43#define FILETYPE_SYMLINK 7
44
45
46#define FILETYPE_INO_MASK 0170000
47#define FILETYPE_INO_REG 0100000
48#define FILETYPE_INO_DIRECTORY 0040000
49#define FILETYPE_INO_SYMLINK 0120000
50#define EXT2_ROOT_INO 2
51
52
53#define EXT2_BLOCK_SIZE(data) (1 << LOG2_BLOCK_SIZE(data))
54
55
56#define LOG2_BLOCK_SIZE(data) (le32_to_cpu \
57 (data->sblock.log2_block_size) \
58 + EXT2_MIN_BLOCK_LOG_SIZE)
59
60#define EXT2_FT_DIR 2
61#define SUCCESS 1
62
63
64#define EXT2_MIN_BLOCK_LOG_SIZE 10
65#define EXT2_MAX_BLOCK_LOG_SIZE 16
66#define EXT2_MIN_BLOCK_SIZE (1 << EXT2_MIN_BLOCK_LOG_SIZE)
67#define EXT2_MAX_BLOCK_SIZE (1 << EXT2_MAX_BLOCK_LOG_SIZE)
68
69
70struct ext2_sblock {
71 __le32 total_inodes;
72 __le32 total_blocks;
73 __le32 reserved_blocks;
74 __le32 free_blocks;
75 __le32 free_inodes;
76 __le32 first_data_block;
77 __le32 log2_block_size;
78 __le32 log2_fragment_size;
79 __le32 blocks_per_group;
80 __le32 fragments_per_group;
81 __le32 inodes_per_group;
82 __le32 mtime;
83 __le32 utime;
84 __le16 mnt_count;
85 __le16 max_mnt_count;
86 __le16 magic;
87 __le16 fs_state;
88 __le16 error_handling;
89 __le16 minor_revision_level;
90 __le32 lastcheck;
91 __le32 checkinterval;
92 __le32 creator_os;
93 __le32 revision_level;
94 __le16 uid_reserved;
95 __le16 gid_reserved;
96 __le32 first_inode;
97 __le16 inode_size;
98 __le16 block_group_number;
99 __le32 feature_compatibility;
100 __le32 feature_incompat;
101 __le32 feature_ro_compat;
102 __le32 unique_id[4];
103 char volume_name[16];
104 char last_mounted_on[64];
105 __le32 compression_info;
106 uint8_t prealloc_blocks;
107 uint8_t prealloc_dir_blocks;
108 __le16 reserved_gdt_blocks;
109 uint8_t journal_uuid[16];
110 __le32 journal_inode;
111 __le32 journal_dev;
112 __le32 last_orphan;
113 __le32 hash_seed[4];
114 uint8_t default_hash_version;
115 uint8_t journal_backup_type;
116 __le16 descriptor_size;
117 __le32 default_mount_options;
118 __le32 first_meta_block_group;
119 __le32 mkfs_time;
120 __le32 journal_blocks[17];
121 __le32 total_blocks_high;
122 __le32 reserved_blocks_high;
123 __le32 free_blocks_high;
124 __le16 min_extra_inode_size;
125 __le16 want_extra_inode_size;
126 __le32 flags;
127 __le16 raid_stride;
128 __le16 mmp_interval;
129 __le64 mmp_block;
130 __le32 raid_stripe_width;
131 uint8_t log2_groups_per_flex;
132 uint8_t checksum_type;
133};
134
135struct ext2_block_group {
136 __le32 block_id;
137 __le32 inode_id;
138 __le32 inode_table_id;
139 __le16 free_blocks;
140 __le16 free_inodes;
141 __le16 used_dir_cnt;
142 __le16 bg_flags;
143 __le32 bg_exclude_bitmap;
144 __le16 bg_block_id_csum;
145 __le16 bg_inode_id_csum;
146 __le16 bg_itable_unused;
147 __le16 bg_checksum;
148
149 __le32 block_id_high;
150 __le32 inode_id_high;
151 __le32 inode_table_id_high;
152 __le16 free_blocks_high;
153 __le16 free_inodes_high;
154 __le16 used_dir_cnt_high;
155 __le16 bg_itable_unused_high;
156 __le32 bg_exclude_bitmap_high;
157 __le16 bg_block_id_csum_high;
158 __le16 bg_inode_id_csum_high;
159 __le32 bg_reserved;
160};
161
162
163struct ext2_inode {
164 __le16 mode;
165 __le16 uid;
166 __le32 size;
167 __le32 atime;
168 __le32 ctime;
169 __le32 mtime;
170 __le32 dtime;
171 __le16 gid;
172 __le16 nlinks;
173 __le32 blockcnt;
174 __le32 flags;
175 __le32 osd1;
176 union {
177 struct datablocks {
178 __le32 dir_blocks[INDIRECT_BLOCKS];
179 __le32 indir_block;
180 __le32 double_indir_block;
181 __le32 triple_indir_block;
182 } blocks;
183 char symlink[60];
184 char inline_data[60];
185 } b;
186 __le32 version;
187 __le32 acl;
188 __le32 size_high;
189 __le32 fragment_addr;
190 __le32 osd2[3];
191};
192
193
194struct ext2_dirent {
195 __le32 inode;
196 __le16 direntlen;
197 __u8 namelen;
198 __u8 filetype;
199};
200
201struct ext2fs_node {
202 struct ext2_data *data;
203 struct ext2_inode inode;
204 int ino;
205 int inode_read;
206};
207
208
209struct ext2_data {
210 struct ext2_sblock sblock;
211 struct ext2_inode *inode;
212 struct ext2fs_node diropen;
213};
214
215extern lbaint_t part_offset;
216
217int do_ext2ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
218int do_ext2load(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
219int do_ext4_load(struct cmd_tbl *cmdtp, int flag, int argc,
220 char *const argv[]);
221int do_ext4_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
222int do_ext4_write(struct cmd_tbl *cmdtp, int flag, int argc,
223 char *const argv[]);
224#endif
225