1#ifndef AMIGAFFS_H
2#define AMIGAFFS_H
3
4#include <linux/types.h>
5#include <linux/buffer_head.h>
6#include <linux/string.h>
7#include <asm/byteorder.h>
8
9
10
11
12
13
14
15
16
17
18
19#define GET_END_PTR(st,p,sz) ((st *)((char *)(p)+((sz)-sizeof(st))))
20#define AFFS_GET_HASHENTRY(data,hashkey) be32_to_cpu(((struct dir_front *)data)->hashtable[hashkey])
21#define AFFS_BLOCK(sb, bh, blk) (AFFS_HEAD(bh)->table[AFFS_SB(sb)->s_hashsize-1-(blk)])
22
23static inline void
24affs_set_blocksize(struct super_block *sb, int size)
25{
26 sb_set_blocksize(sb, size);
27}
28static inline struct buffer_head *
29affs_bread(struct super_block *sb, int block)
30{
31 pr_debug("affs_bread: %d\n", block);
32 if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size)
33 return sb_bread(sb, block);
34 return NULL;
35}
36static inline struct buffer_head *
37affs_getblk(struct super_block *sb, int block)
38{
39 pr_debug("affs_getblk: %d\n", block);
40 if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size)
41 return sb_getblk(sb, block);
42 return NULL;
43}
44static inline struct buffer_head *
45affs_getzeroblk(struct super_block *sb, int block)
46{
47 struct buffer_head *bh;
48 pr_debug("affs_getzeroblk: %d\n", block);
49 if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size) {
50 bh = sb_getblk(sb, block);
51 lock_buffer(bh);
52 memset(bh->b_data, 0 , sb->s_blocksize);
53 set_buffer_uptodate(bh);
54 unlock_buffer(bh);
55 return bh;
56 }
57 return NULL;
58}
59static inline struct buffer_head *
60affs_getemptyblk(struct super_block *sb, int block)
61{
62 struct buffer_head *bh;
63 pr_debug("affs_getemptyblk: %d\n", block);
64 if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size) {
65 bh = sb_getblk(sb, block);
66 wait_on_buffer(bh);
67 set_buffer_uptodate(bh);
68 return bh;
69 }
70 return NULL;
71}
72static inline void
73affs_brelse(struct buffer_head *bh)
74{
75 if (bh)
76 pr_debug("affs_brelse: %lld\n", (long long) bh->b_blocknr);
77 brelse(bh);
78}
79
80static inline void
81affs_adjust_checksum(struct buffer_head *bh, u32 val)
82{
83 u32 tmp = be32_to_cpu(((__be32 *)bh->b_data)[5]);
84 ((__be32 *)bh->b_data)[5] = cpu_to_be32(tmp - val);
85}
86static inline void
87affs_adjust_bitmapchecksum(struct buffer_head *bh, u32 val)
88{
89 u32 tmp = be32_to_cpu(((__be32 *)bh->b_data)[0]);
90 ((__be32 *)bh->b_data)[0] = cpu_to_be32(tmp - val);
91}
92
93static inline void
94affs_lock_link(struct inode *inode)
95{
96 down(&AFFS_I(inode)->i_link_lock);
97}
98static inline void
99affs_unlock_link(struct inode *inode)
100{
101 up(&AFFS_I(inode)->i_link_lock);
102}
103static inline void
104affs_lock_dir(struct inode *inode)
105{
106 down(&AFFS_I(inode)->i_hash_lock);
107}
108static inline void
109affs_unlock_dir(struct inode *inode)
110{
111 up(&AFFS_I(inode)->i_hash_lock);
112}
113static inline void
114affs_lock_ext(struct inode *inode)
115{
116 down(&AFFS_I(inode)->i_ext_lock);
117}
118static inline void
119affs_unlock_ext(struct inode *inode)
120{
121 up(&AFFS_I(inode)->i_ext_lock);
122}
123
124#ifdef __LITTLE_ENDIAN
125#define BO_EXBITS 0x18UL
126#elif defined(__BIG_ENDIAN)
127#define BO_EXBITS 0x00UL
128#else
129#error Endianness must be known for affs to work.
130#endif
131
132#define FS_OFS 0x444F5300
133#define FS_FFS 0x444F5301
134#define FS_INTLOFS 0x444F5302
135#define FS_INTLFFS 0x444F5303
136#define FS_DCOFS 0x444F5304
137#define FS_DCFFS 0x444F5305
138#define MUFS_FS 0x6d754653
139#define MUFS_OFS 0x6d754600
140#define MUFS_FFS 0x6d754601
141#define MUFS_INTLOFS 0x6d754602
142#define MUFS_INTLFFS 0x6d754603
143#define MUFS_DCOFS 0x6d754604
144#define MUFS_DCFFS 0x6d754605
145
146#define T_SHORT 2
147#define T_LIST 16
148#define T_DATA 8
149
150#define ST_LINKFILE -4
151#define ST_FILE -3
152#define ST_ROOT 1
153#define ST_USERDIR 2
154#define ST_SOFTLINK 3
155#define ST_LINKDIR 4
156
157#define AFFS_ROOT_BMAPS 25
158
159#define AFFS_HEAD(bh) ((struct affs_head *)(bh)->b_data)
160#define AFFS_TAIL(sb, bh) ((struct affs_tail *)((bh)->b_data+(sb)->s_blocksize-sizeof(struct affs_tail)))
161#define AFFS_ROOT_HEAD(bh) ((struct affs_root_head *)(bh)->b_data)
162#define AFFS_ROOT_TAIL(sb, bh) ((struct affs_root_tail *)((bh)->b_data+(sb)->s_blocksize-sizeof(struct affs_root_tail)))
163#define AFFS_DATA_HEAD(bh) ((struct affs_data_head *)(bh)->b_data)
164#define AFFS_DATA(bh) (((struct affs_data_head *)(bh)->b_data)->data)
165
166struct affs_date {
167 __be32 days;
168 __be32 mins;
169 __be32 ticks;
170};
171
172struct affs_short_date {
173 __be16 days;
174 __be16 mins;
175 __be16 ticks;
176};
177
178struct affs_root_head {
179 __be32 ptype;
180 __be32 spare1;
181 __be32 spare2;
182 __be32 hash_size;
183 __be32 spare3;
184 __be32 checksum;
185 __be32 hashtable[1];
186};
187
188struct affs_root_tail {
189 __be32 bm_flag;
190 __be32 bm_blk[AFFS_ROOT_BMAPS];
191 __be32 bm_ext;
192 struct affs_date root_change;
193 u8 disk_name[32];
194 __be32 spare1;
195 __be32 spare2;
196 struct affs_date disk_change;
197 struct affs_date disk_create;
198 __be32 spare3;
199 __be32 spare4;
200 __be32 dcache;
201 __be32 stype;
202};
203
204struct affs_head {
205 __be32 ptype;
206 __be32 key;
207 __be32 block_count;
208 __be32 spare1;
209 __be32 first_data;
210 __be32 checksum;
211 __be32 table[1];
212};
213
214struct affs_tail {
215 __be32 spare1;
216 __be16 uid;
217 __be16 gid;
218 __be32 protect;
219 __be32 size;
220 u8 comment[92];
221 struct affs_date change;
222 u8 name[32];
223 __be32 spare2;
224 __be32 original;
225 __be32 link_chain;
226 __be32 spare[5];
227 __be32 hash_chain;
228 __be32 parent;
229 __be32 extension;
230 __be32 stype;
231};
232
233struct slink_front
234{
235 __be32 ptype;
236 __be32 key;
237 __be32 spare1[3];
238 __be32 checksum;
239 u8 symname[1];
240};
241
242struct affs_data_head
243{
244 __be32 ptype;
245 __be32 key;
246 __be32 sequence;
247 __be32 size;
248 __be32 next;
249 __be32 checksum;
250 u8 data[1];
251};
252
253
254
255#define FIBF_OTR_READ 0x8000
256#define FIBF_OTR_WRITE 0x4000
257#define FIBF_OTR_EXECUTE 0x2000
258#define FIBF_OTR_DELETE 0x1000
259#define FIBF_GRP_READ 0x0800
260#define FIBF_GRP_WRITE 0x0400
261#define FIBF_GRP_EXECUTE 0x0200
262#define FIBF_GRP_DELETE 0x0100
263
264#define FIBF_HIDDEN 0x0080
265#define FIBF_SCRIPT 0x0040
266#define FIBF_PURE 0x0020
267#define FIBF_ARCHIVED 0x0010
268#define FIBF_NOREAD 0x0008
269#define FIBF_NOWRITE 0x0004
270#define FIBF_NOEXECUTE 0x0002
271#define FIBF_NODELETE 0x0001
272
273#define FIBF_OWNER 0x000F
274#define FIBF_MASK 0xEE0E
275
276#endif
277
