1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef AMIGAFFS_H
3 #define AMIGAFFS_H
4
5 #include <linux/types.h>
6 #include <asm/byteorder.h>
7
8 #define FS_OFS 0x444F5300
9 #define FS_FFS 0x444F5301
10 #define FS_INTLOFS 0x444F5302
11 #define FS_INTLFFS 0x444F5303
12 #define FS_DCOFS 0x444F5304
13 #define FS_DCFFS 0x444F5305
14 #define MUFS_FS 0x6d754653 /* 'muFS' */
15 #define MUFS_OFS 0x6d754600 /* 'muF\0' */
16 #define MUFS_FFS 0x6d754601 /* 'muF\1' */
17 #define MUFS_INTLOFS 0x6d754602 /* 'muF\2' */
18 #define MUFS_INTLFFS 0x6d754603 /* 'muF\3' */
19 #define MUFS_DCOFS 0x6d754604 /* 'muF\4' */
20 #define MUFS_DCFFS 0x6d754605 /* 'muF\5' */
21
22 #define T_SHORT 2
23 #define T_LIST 16
24 #define T_DATA 8
25
26 #define ST_LINKFILE -4
27 #define ST_FILE -3
28 #define ST_ROOT 1
29 #define ST_USERDIR 2
30 #define ST_SOFTLINK 3
31 #define ST_LINKDIR 4
32
33 #define AFFS_ROOT_BMAPS 25
34
35 /* Seconds since Amiga epoch of 1978/01/01 to UNIX */
36 #define AFFS_EPOCH_DELTA ((8 * 365 + 2) * 86400LL)
37
38 struct affs_date {
39 __be32 days;
40 __be32 mins;
41 __be32 ticks;
42 };
43
44 struct affs_short_date {
45 __be16 days;
46 __be16 mins;
47 __be16 ticks;
48 };
49
50 struct affs_root_head {
51 __be32 ptype;
52 __be32 spare1;
53 __be32 spare2;
54 __be32 hash_size;
55 __be32 spare3;
56 __be32 checksum;
57 __be32 hashtable[1];
58 };
59
60 struct affs_root_tail {
61 __be32 bm_flag;
62 __be32 bm_blk[AFFS_ROOT_BMAPS];
63 __be32 bm_ext;
64 struct affs_date root_change;
65 u8 disk_name[32];
66 __be32 spare1;
67 __be32 spare2;
68 struct affs_date disk_change;
69 struct affs_date disk_create;
70 __be32 spare3;
71 __be32 spare4;
72 __be32 dcache;
73 __be32 stype;
74 };
75
76 struct affs_head {
77 __be32 ptype;
78 __be32 key;
79 __be32 block_count;
80 __be32 spare1;
81 __be32 first_data;
82 __be32 checksum;
83 __be32 table[];
84 };
85
86 struct affs_tail {
87 __be32 spare1;
88 __be16 uid;
89 __be16 gid;
90 __be32 protect;
91 __be32 size;
92 u8 comment[92];
93 struct affs_date change;
94 u8 name[32];
95 __be32 spare2;
96 __be32 original;
97 __be32 link_chain;
98 __be32 spare[5];
99 __be32 hash_chain;
100 __be32 parent;
101 __be32 extension;
102 __be32 stype;
103 };
104
105 struct slink_front
106 {
107 __be32 ptype;
108 __be32 key;
109 __be32 spare1[3];
110 __be32 checksum;
111 u8 symname[]; /* depends on block size */
112 };
113
114 struct affs_data_head
115 {
116 __be32 ptype;
117 __be32 key;
118 __be32 sequence;
119 __be32 size;
120 __be32 next;
121 __be32 checksum;
122 u8 data[]; /* depends on block size */
123 };
124
125 /* Permission bits */
126
127 #define FIBF_OTR_READ 0x8000
128 #define FIBF_OTR_WRITE 0x4000
129 #define FIBF_OTR_EXECUTE 0x2000
130 #define FIBF_OTR_DELETE 0x1000
131 #define FIBF_GRP_READ 0x0800
132 #define FIBF_GRP_WRITE 0x0400
133 #define FIBF_GRP_EXECUTE 0x0200
134 #define FIBF_GRP_DELETE 0x0100
135
136 #define FIBF_HIDDEN 0x0080
137 #define FIBF_SCRIPT 0x0040
138 #define FIBF_PURE 0x0020 /* no use under linux */
139 #define FIBF_ARCHIVED 0x0010 /* never set, always cleared on write */
140 #define FIBF_NOREAD 0x0008 /* 0 means allowed */
141 #define FIBF_NOWRITE 0x0004 /* 0 means allowed */
142 #define FIBF_NOEXECUTE 0x0002 /* 0 means allowed, ignored under linux */
143 #define FIBF_NODELETE 0x0001 /* 0 means allowed */
144
145 #define FIBF_OWNER 0x000F /* Bits pertaining to owner */
146 #define FIBF_MASK 0xEE0E /* Bits modified by Linux */
147
148 #endif
149
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