1
2#include <linux/buffer_head.h>
3#include <linux/fs.h>
4#include <linux/adfs_fs.h>
5
6
7
8#define ADFS_FREE_FRAG 0
9#define ADFS_BAD_FRAG 1
10#define ADFS_ROOT_FRAG 2
11
12#define ADFS_FILETYPE_NONE ((u16)~0)
13
14
15static inline u16 adfs_filetype(u32 loadaddr)
16{
17 return (loadaddr & 0xfff00000) == 0xfff00000 ?
18 (loadaddr >> 8) & 0xfff : ADFS_FILETYPE_NONE;
19}
20
21#define ADFS_NDA_OWNER_READ (1 << 0)
22#define ADFS_NDA_OWNER_WRITE (1 << 1)
23#define ADFS_NDA_LOCKED (1 << 2)
24#define ADFS_NDA_DIRECTORY (1 << 3)
25#define ADFS_NDA_EXECUTE (1 << 4)
26#define ADFS_NDA_PUBLIC_READ (1 << 5)
27#define ADFS_NDA_PUBLIC_WRITE (1 << 6)
28
29
30
31
32struct adfs_inode_info {
33 loff_t mmu_private;
34 __u32 parent_id;
35 __u32 indaddr;
36 __u32 loadaddr;
37 __u32 execaddr;
38 unsigned int attr;
39 struct inode vfs_inode;
40};
41
42static inline struct adfs_inode_info *ADFS_I(struct inode *inode)
43{
44 return container_of(inode, struct adfs_inode_info, vfs_inode);
45}
46
47static inline bool adfs_inode_is_stamped(struct inode *inode)
48{
49 return (ADFS_I(inode)->loadaddr & 0xfff00000) == 0xfff00000;
50}
51
52
53
54
55struct adfs_discmap;
56struct adfs_dir_ops;
57
58
59
60
61struct adfs_sb_info {
62 union { struct {
63 struct adfs_discmap *s_map;
64 const struct adfs_dir_ops *s_dir;
65 };
66 struct rcu_head rcu;
67 };
68 kuid_t s_uid;
69 kgid_t s_gid;
70 umode_t s_owner_mask;
71 umode_t s_other_mask;
72 int s_ftsuffix;
73
74 __u32 s_ids_per_zone;
75 __u32 s_idlen;
76 __u32 s_map_size;
77 signed int s_map2blk;
78 unsigned int s_log2sharesize;
79 unsigned int s_namelen;
80};
81
82static inline struct adfs_sb_info *ADFS_SB(struct super_block *sb)
83{
84 return sb->s_fs_info;
85}
86
87
88
89
90struct adfs_dir {
91 struct super_block *sb;
92
93 int nr_buffers;
94 struct buffer_head *bh[4];
95 struct buffer_head **bhs;
96
97 unsigned int pos;
98 __u32 parent_id;
99
100 union {
101 struct adfs_dirheader *dirhead;
102 struct adfs_bigdirheader *bighead;
103 };
104 union {
105 struct adfs_newdirtail *newtail;
106 struct adfs_bigdirtail *bigtail;
107 };
108};
109
110
111
112
113#define ADFS_MAX_NAME_LEN (256 + 4)
114struct object_info {
115 __u32 parent_id;
116 __u32 indaddr;
117 __u32 loadaddr;
118 __u32 execaddr;
119 __u32 size;
120 __u8 attr;
121 unsigned int name_len;
122 char name[ADFS_MAX_NAME_LEN];
123};
124
125struct adfs_dir_ops {
126 int (*read)(struct super_block *sb, unsigned int indaddr,
127 unsigned int size, struct adfs_dir *dir);
128 int (*iterate)(struct adfs_dir *dir, struct dir_context *ctx);
129 int (*setpos)(struct adfs_dir *dir, unsigned int fpos);
130 int (*getnext)(struct adfs_dir *dir, struct object_info *obj);
131 int (*update)(struct adfs_dir *dir, struct object_info *obj);
132 int (*create)(struct adfs_dir *dir, struct object_info *obj);
133 int (*remove)(struct adfs_dir *dir, struct object_info *obj);
134 int (*commit)(struct adfs_dir *dir);
135};
136
137struct adfs_discmap {
138 struct buffer_head *dm_bh;
139 __u32 dm_startblk;
140 unsigned int dm_startbit;
141 unsigned int dm_endbit;
142};
143
144
145struct inode *adfs_iget(struct super_block *sb, struct object_info *obj);
146int adfs_write_inode(struct inode *inode, struct writeback_control *wbc);
147int adfs_notify_change(struct dentry *dentry, struct iattr *attr);
148
149
150int adfs_map_lookup(struct super_block *sb, u32 frag_id, unsigned int offset);
151void adfs_map_statfs(struct super_block *sb, struct kstatfs *buf);
152struct adfs_discmap *adfs_read_map(struct super_block *sb, struct adfs_discrecord *dr);
153void adfs_free_map(struct super_block *sb);
154
155
156__printf(3, 4)
157void __adfs_error(struct super_block *sb, const char *function,
158 const char *fmt, ...);
159#define adfs_error(sb, fmt...) __adfs_error(sb, __func__, fmt)
160void adfs_msg(struct super_block *sb, const char *pfx, const char *fmt, ...);
161
162
163
164
165
166
167
168
169extern const struct inode_operations adfs_dir_inode_operations;
170extern const struct file_operations adfs_dir_operations;
171extern const struct dentry_operations adfs_dentry_operations;
172extern const struct adfs_dir_ops adfs_f_dir_ops;
173extern const struct adfs_dir_ops adfs_fplus_dir_ops;
174
175int adfs_dir_copyfrom(void *dst, struct adfs_dir *dir, unsigned int offset,
176 size_t len);
177int adfs_dir_copyto(struct adfs_dir *dir, unsigned int offset, const void *src,
178 size_t len);
179void adfs_dir_relse(struct adfs_dir *dir);
180int adfs_dir_read_buffers(struct super_block *sb, u32 indaddr,
181 unsigned int size, struct adfs_dir *dir);
182void adfs_object_fixup(struct adfs_dir *dir, struct object_info *obj);
183extern int adfs_dir_update(struct super_block *sb, struct object_info *obj,
184 int wait);
185
186
187extern const struct inode_operations adfs_file_inode_operations;
188extern const struct file_operations adfs_file_operations;
189
190static inline __u32 signed_asl(__u32 val, signed int shift)
191{
192 if (shift >= 0)
193 val <<= shift;
194 else
195 val >>= -shift;
196 return val;
197}
198
199
200
201
202
203
204
205static inline int __adfs_block_map(struct super_block *sb, u32 indaddr,
206 unsigned int block)
207{
208 if (indaddr & 255) {
209 unsigned int off;
210
211 off = (indaddr & 255) - 1;
212 block += off << ADFS_SB(sb)->s_log2sharesize;
213 }
214
215 return adfs_map_lookup(sb, indaddr >> 8, block);
216}
217
218
219static inline
220struct adfs_discrecord *adfs_map_discrecord(struct adfs_discmap *dm)
221{
222 return (void *)(dm[0].dm_bh->b_data + 4);
223}
224
225static inline u64 adfs_disc_size(const struct adfs_discrecord *dr)
226{
227 return (u64)le32_to_cpu(dr->disc_size_high) << 32 |
228 le32_to_cpu(dr->disc_size);
229}
230