Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef _LINUX_SYSV_FS_H |
2 | #define _LINUX_SYSV_FS_H | |
3 | ||
4 | #if defined(__GNUC__) | |
5 | # define __packed2__ __attribute__((packed, aligned(2))) | |
6 | #else | |
7 | >> I want to scream! << | |
8 | #endif | |
9 | ||
10 | ||
11 | #ifndef __KERNEL__ | |
12 | typedef u16 __fs16; | |
13 | typedef u32 __fs16; | |
14 | #endif | |
15 | ||
16 | /* inode numbers are 16 bit */ | |
17 | typedef __fs16 sysv_ino_t; | |
18 | ||
19 | /* Block numbers are 24 bit, sometimes stored in 32 bit. | |
20 | On Coherent FS, they are always stored in PDP-11 manner: the least | |
21 | significant 16 bits come last. */ | |
22 | typedef __fs32 sysv_zone_t; | |
23 | ||
24 | /* 0 is non-existent */ | |
25 | #define SYSV_BADBL_INO 1 /* inode of bad blocks file */ | |
26 | #define SYSV_ROOT_INO 2 /* inode of root directory */ | |
27 | ||
28 | ||
29 | /* Xenix super-block data on disk */ | |
30 | #define XENIX_NICINOD 100 /* number of inode cache entries */ | |
31 | #define XENIX_NICFREE 100 /* number of free block list chunk entries */ | |
32 | struct xenix_super_block { | |
33 | __fs16 s_isize; /* index of first data zone */ | |
34 | __fs32 s_fsize __packed2__; /* total number of zones of this fs */ | |
35 | /* the start of the free block list: */ | |
36 | __fs16 s_nfree; /* number of free blocks in s_free, <= XENIX_NICFREE */ | |
37 | sysv_zone_t s_free[XENIX_NICFREE]; /* first free block list chunk */ | |
38 | /* the cache of free inodes: */ | |
39 | __fs16 s_ninode; /* number of free inodes in s_inode, <= XENIX_NICINOD */ | |
40 | sysv_ino_t s_inode[XENIX_NICINOD]; /* some free inodes */ | |
41 | /* locks, not used by Linux: */ | |
42 | char s_flock; /* lock during free block list manipulation */ | |
43 | char s_ilock; /* lock during inode cache manipulation */ | |
44 | char s_fmod; /* super-block modified flag */ | |
45 | char s_ronly; /* flag whether fs is mounted read-only */ | |
46 | __fs32 s_time __packed2__; /* time of last super block update */ | |
47 | __fs32 s_tfree __packed2__; /* total number of free zones */ | |
48 | __fs16 s_tinode; /* total number of free inodes */ | |
49 | __fs16 s_dinfo[4]; /* device information ?? */ | |
50 | char s_fname[6]; /* file system volume name */ | |
51 | char s_fpack[6]; /* file system pack name */ | |
52 | char s_clean; /* set to 0x46 when filesystem is properly unmounted */ | |
53 | char s_fill[371]; | |
54 | s32 s_magic; /* version of file system */ | |
55 | __fs32 s_type; /* type of file system: 1 for 512 byte blocks | |
56 | 2 for 1024 byte blocks | |
57 | 3 for 2048 byte blocks */ | |
58 | ||
59 | }; | |
60 | ||
61 | /* | |
62 | * SystemV FS comes in two variants: | |
63 | * sysv2: System V Release 2 (e.g. Microport), structure elements aligned(2). | |
64 | * sysv4: System V Release 4 (e.g. Consensys), structure elements aligned(4). | |
65 | */ | |
66 | #define SYSV_NICINOD 100 /* number of inode cache entries */ | |
67 | #define SYSV_NICFREE 50 /* number of free block list chunk entries */ | |
68 | ||
69 | /* SystemV4 super-block data on disk */ | |
70 | struct sysv4_super_block { | |
71 | __fs16 s_isize; /* index of first data zone */ | |
72 | u16 s_pad0; | |
73 | __fs32 s_fsize; /* total number of zones of this fs */ | |
74 | /* the start of the free block list: */ | |
75 | __fs16 s_nfree; /* number of free blocks in s_free, <= SYSV_NICFREE */ | |
76 | u16 s_pad1; | |
77 | sysv_zone_t s_free[SYSV_NICFREE]; /* first free block list chunk */ | |
78 | /* the cache of free inodes: */ | |
79 | __fs16 s_ninode; /* number of free inodes in s_inode, <= SYSV_NICINOD */ | |
80 | u16 s_pad2; | |
81 | sysv_ino_t s_inode[SYSV_NICINOD]; /* some free inodes */ | |
82 | /* locks, not used by Linux: */ | |
83 | char s_flock; /* lock during free block list manipulation */ | |
84 | char s_ilock; /* lock during inode cache manipulation */ | |
85 | char s_fmod; /* super-block modified flag */ | |
86 | char s_ronly; /* flag whether fs is mounted read-only */ | |
87 | __fs32 s_time; /* time of last super block update */ | |
88 | __fs16 s_dinfo[4]; /* device information ?? */ | |
89 | __fs32 s_tfree; /* total number of free zones */ | |
90 | __fs16 s_tinode; /* total number of free inodes */ | |
91 | u16 s_pad3; | |
92 | char s_fname[6]; /* file system volume name */ | |
93 | char s_fpack[6]; /* file system pack name */ | |
94 | s32 s_fill[12]; | |
95 | __fs32 s_state; /* file system state: 0x7c269d38-s_time means clean */ | |
96 | s32 s_magic; /* version of file system */ | |
97 | __fs32 s_type; /* type of file system: 1 for 512 byte blocks | |
98 | 2 for 1024 byte blocks */ | |
99 | }; | |
100 | ||
101 | /* SystemV2 super-block data on disk */ | |
102 | struct sysv2_super_block { | |
103 | __fs16 s_isize; /* index of first data zone */ | |
104 | __fs32 s_fsize __packed2__; /* total number of zones of this fs */ | |
105 | /* the start of the free block list: */ | |
106 | __fs16 s_nfree; /* number of free blocks in s_free, <= SYSV_NICFREE */ | |
107 | sysv_zone_t s_free[SYSV_NICFREE]; /* first free block list chunk */ | |
108 | /* the cache of free inodes: */ | |
109 | __fs16 s_ninode; /* number of free inodes in s_inode, <= SYSV_NICINOD */ | |
110 | sysv_ino_t s_inode[SYSV_NICINOD]; /* some free inodes */ | |
111 | /* locks, not used by Linux: */ | |
112 | char s_flock; /* lock during free block list manipulation */ | |
113 | char s_ilock; /* lock during inode cache manipulation */ | |
114 | char s_fmod; /* super-block modified flag */ | |
115 | char s_ronly; /* flag whether fs is mounted read-only */ | |
116 | __fs32 s_time __packed2__; /* time of last super block update */ | |
117 | __fs16 s_dinfo[4]; /* device information ?? */ | |
118 | __fs32 s_tfree __packed2__; /* total number of free zones */ | |
119 | __fs16 s_tinode; /* total number of free inodes */ | |
120 | char s_fname[6]; /* file system volume name */ | |
121 | char s_fpack[6]; /* file system pack name */ | |
122 | s32 s_fill[14]; | |
123 | __fs32 s_state; /* file system state: 0xcb096f43 means clean */ | |
124 | s32 s_magic; /* version of file system */ | |
125 | __fs32 s_type; /* type of file system: 1 for 512 byte blocks | |
126 | 2 for 1024 byte blocks */ | |
127 | }; | |
128 | ||
129 | /* V7 super-block data on disk */ | |
130 | #define V7_NICINOD 100 /* number of inode cache entries */ | |
131 | #define V7_NICFREE 50 /* number of free block list chunk entries */ | |
132 | struct v7_super_block { | |
133 | __fs16 s_isize; /* index of first data zone */ | |
134 | __fs32 s_fsize __packed2__; /* total number of zones of this fs */ | |
135 | /* the start of the free block list: */ | |
136 | __fs16 s_nfree; /* number of free blocks in s_free, <= V7_NICFREE */ | |
137 | sysv_zone_t s_free[V7_NICFREE]; /* first free block list chunk */ | |
138 | /* the cache of free inodes: */ | |
139 | __fs16 s_ninode; /* number of free inodes in s_inode, <= V7_NICINOD */ | |
140 | sysv_ino_t s_inode[V7_NICINOD]; /* some free inodes */ | |
141 | /* locks, not used by Linux or V7: */ | |
142 | char s_flock; /* lock during free block list manipulation */ | |
143 | char s_ilock; /* lock during inode cache manipulation */ | |
144 | char s_fmod; /* super-block modified flag */ | |
145 | char s_ronly; /* flag whether fs is mounted read-only */ | |
146 | __fs32 s_time __packed2__; /* time of last super block update */ | |
147 | /* the following fields are not maintained by V7: */ | |
148 | __fs32 s_tfree __packed2__; /* total number of free zones */ | |
149 | __fs16 s_tinode; /* total number of free inodes */ | |
150 | __fs16 s_m; /* interleave factor */ | |
151 | __fs16 s_n; /* interleave factor */ | |
152 | char s_fname[6]; /* file system name */ | |
153 | char s_fpack[6]; /* file system pack name */ | |
154 | }; | |
155 | ||
156 | /* Coherent super-block data on disk */ | |
157 | #define COH_NICINOD 100 /* number of inode cache entries */ | |
158 | #define COH_NICFREE 64 /* number of free block list chunk entries */ | |
159 | struct coh_super_block { | |
160 | __fs16 s_isize; /* index of first data zone */ | |
161 | __fs32 s_fsize __packed2__; /* total number of zones of this fs */ | |
162 | /* the start of the free block list: */ | |
163 | __fs16 s_nfree; /* number of free blocks in s_free, <= COH_NICFREE */ | |
164 | sysv_zone_t s_free[COH_NICFREE] __packed2__; /* first free block list chunk */ | |
165 | /* the cache of free inodes: */ | |
166 | __fs16 s_ninode; /* number of free inodes in s_inode, <= COH_NICINOD */ | |
167 | sysv_ino_t s_inode[COH_NICINOD]; /* some free inodes */ | |
168 | /* locks, not used by Linux: */ | |
169 | char s_flock; /* lock during free block list manipulation */ | |
170 | char s_ilock; /* lock during inode cache manipulation */ | |
171 | char s_fmod; /* super-block modified flag */ | |
172 | char s_ronly; /* flag whether fs is mounted read-only */ | |
173 | __fs32 s_time __packed2__; /* time of last super block update */ | |
174 | __fs32 s_tfree __packed2__; /* total number of free zones */ | |
175 | __fs16 s_tinode; /* total number of free inodes */ | |
176 | __fs16 s_interleave_m; /* interleave factor */ | |
177 | __fs16 s_interleave_n; | |
178 | char s_fname[6]; /* file system volume name */ | |
179 | char s_fpack[6]; /* file system pack name */ | |
180 | __fs32 s_unique; /* zero, not used */ | |
181 | }; | |
182 | ||
183 | /* SystemV/Coherent inode data on disk */ | |
184 | struct sysv_inode { | |
185 | __fs16 i_mode; | |
186 | __fs16 i_nlink; | |
187 | __fs16 i_uid; | |
188 | __fs16 i_gid; | |
189 | __fs32 i_size; | |
190 | u8 i_data[3*(10+1+1+1)]; | |
191 | u8 i_gen; | |
192 | __fs32 i_atime; /* time of last access */ | |
193 | __fs32 i_mtime; /* time of last modification */ | |
194 | __fs32 i_ctime; /* time of creation */ | |
195 | }; | |
196 | ||
197 | /* SystemV/Coherent directory entry on disk */ | |
198 | #define SYSV_NAMELEN 14 /* max size of name in struct sysv_dir_entry */ | |
199 | struct sysv_dir_entry { | |
200 | sysv_ino_t inode; | |
201 | char name[SYSV_NAMELEN]; /* up to 14 characters, the rest are zeroes */ | |
202 | }; | |
203 | ||
204 | #define SYSV_DIRSIZE sizeof(struct sysv_dir_entry) /* size of every directory entry */ | |
205 | ||
206 | #endif /* _LINUX_SYSV_FS_H */ |