]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2000-2001 Christoph Hellwig. | |
1cce1701 | 3 | * Copyright (c) 2016 Krzysztof Blaszkowski |
1da177e4 LT |
4 | * All rights reserved. |
5 | * | |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions | |
8 | * are met: | |
9 | * 1. Redistributions of source code must retain the above copyright | |
10 | * notice, this list of conditions, and the following disclaimer, | |
11 | * without modification. | |
12 | * 2. The name of the author may not be used to endorse or promote products | |
13 | * derived from this software without specific prior written permission. | |
14 | * | |
15 | * Alternatively, this software may be distributed under the terms of the | |
16 | * GNU General Public License ("GPL"). | |
17 | * | |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |
19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR | |
22 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
28 | * SUCH DAMAGE. | |
29 | * | |
30 | */ | |
31 | #ifndef _VXFS_SUPER_H_ | |
32 | #define _VXFS_SUPER_H_ | |
33 | ||
34 | /* | |
35 | * Veritas filesystem driver - superblock structure. | |
36 | * | |
37 | * This file contains the definition of the disk and core | |
38 | * superblocks of the Veritas Filesystem. | |
39 | */ | |
40 | #include <linux/types.h> | |
1da177e4 | 41 | |
1da177e4 LT |
42 | /* |
43 | * Superblock magic number (vxfs_super->vs_magic). | |
44 | */ | |
45 | #define VXFS_SUPER_MAGIC 0xa501FCF5 | |
46 | ||
47 | /* | |
48 | * The root inode. | |
49 | */ | |
50 | #define VXFS_ROOT_INO 2 | |
51 | ||
52 | /* | |
53 | * Num of entries in free extent array | |
54 | */ | |
55 | #define VXFS_NEFREE 32 | |
56 | ||
0d83f7fc KB |
57 | enum vxfs_byte_order { |
58 | VXFS_BO_LE, | |
59 | VXFS_BO_BE, | |
60 | }; | |
61 | ||
62 | typedef __u16 __bitwise __fs16; | |
63 | typedef __u32 __bitwise __fs32; | |
64 | typedef __u64 __bitwise __fs64; | |
1da177e4 LT |
65 | |
66 | /* | |
67 | * VxFS superblock (disk). | |
68 | */ | |
69 | struct vxfs_sb { | |
70 | /* | |
71 | * Readonly fields for the version 1 superblock. | |
72 | * | |
73 | * Lots of this fields are no more used by version 2 | |
74 | * and never filesystems. | |
75 | */ | |
0d83f7fc KB |
76 | __fs32 vs_magic; /* Magic number */ |
77 | __fs32 vs_version; /* VxFS version */ | |
78 | __fs32 vs_ctime; /* create time - secs */ | |
79 | __fs32 vs_cutime; /* create time - usecs */ | |
80 | __fs32 __unused1; /* unused */ | |
81 | __fs32 __unused2; /* unused */ | |
82 | __fs32 vs_old_logstart; /* obsolete */ | |
83 | __fs32 vs_old_logend; /* obsolete */ | |
84 | __fs32 vs_bsize; /* block size */ | |
85 | __fs32 vs_size; /* number of blocks */ | |
86 | __fs32 vs_dsize; /* number of data blocks */ | |
87 | __fs32 vs_old_ninode; /* obsolete */ | |
88 | __fs32 vs_old_nau; /* obsolete */ | |
89 | __fs32 __unused3; /* unused */ | |
90 | __fs32 vs_old_defiextsize; /* obsolete */ | |
91 | __fs32 vs_old_ilbsize; /* obsolete */ | |
92 | __fs32 vs_immedlen; /* size of immediate data area */ | |
93 | __fs32 vs_ndaddr; /* number of direct extentes */ | |
94 | __fs32 vs_firstau; /* address of first AU */ | |
95 | __fs32 vs_emap; /* offset of extent map in AU */ | |
96 | __fs32 vs_imap; /* offset of inode map in AU */ | |
97 | __fs32 vs_iextop; /* offset of ExtOp. map in AU */ | |
98 | __fs32 vs_istart; /* offset of inode list in AU */ | |
99 | __fs32 vs_bstart; /* offset of fdblock in AU */ | |
100 | __fs32 vs_femap; /* aufirst + emap */ | |
101 | __fs32 vs_fimap; /* aufirst + imap */ | |
102 | __fs32 vs_fiextop; /* aufirst + iextop */ | |
103 | __fs32 vs_fistart; /* aufirst + istart */ | |
104 | __fs32 vs_fbstart; /* aufirst + bstart */ | |
105 | __fs32 vs_nindir; /* number of entries in indir */ | |
106 | __fs32 vs_aulen; /* length of AU in blocks */ | |
107 | __fs32 vs_auimlen; /* length of imap in blocks */ | |
108 | __fs32 vs_auemlen; /* length of emap in blocks */ | |
109 | __fs32 vs_auilen; /* length of ilist in blocks */ | |
110 | __fs32 vs_aupad; /* length of pad in blocks */ | |
111 | __fs32 vs_aublocks; /* data blocks in AU */ | |
112 | __fs32 vs_maxtier; /* log base 2 of aublocks */ | |
113 | __fs32 vs_inopb; /* number of inodes per blk */ | |
114 | __fs32 vs_old_inopau; /* obsolete */ | |
115 | __fs32 vs_old_inopilb; /* obsolete */ | |
116 | __fs32 vs_old_ndiripau; /* obsolete */ | |
117 | __fs32 vs_iaddrlen; /* size of indirect addr ext. */ | |
118 | __fs32 vs_bshift; /* log base 2 of bsize */ | |
119 | __fs32 vs_inoshift; /* log base 2 of inobp */ | |
120 | __fs32 vs_bmask; /* ~( bsize - 1 ) */ | |
121 | __fs32 vs_boffmask; /* bsize - 1 */ | |
122 | __fs32 vs_old_inomask; /* old_inopilb - 1 */ | |
123 | __fs32 vs_checksum; /* checksum of V1 data */ | |
1da177e4 LT |
124 | |
125 | /* | |
126 | * Version 1, writable | |
127 | */ | |
0d83f7fc KB |
128 | __fs32 vs_free; /* number of free blocks */ |
129 | __fs32 vs_ifree; /* number of free inodes */ | |
130 | __fs32 vs_efree[VXFS_NEFREE]; /* number of free extents by size */ | |
131 | __fs32 vs_flags; /* flags ?!? */ | |
132 | __u8 vs_mod; /* filesystem has been changed */ | |
133 | __u8 vs_clean; /* clean FS */ | |
134 | __fs16 __unused4; /* unused */ | |
135 | __fs32 vs_firstlogid; /* mount time log ID */ | |
136 | __fs32 vs_wtime; /* last time written - sec */ | |
137 | __fs32 vs_wutime; /* last time written - usec */ | |
138 | __u8 vs_fname[6]; /* FS name */ | |
139 | __u8 vs_fpack[6]; /* FS pack name */ | |
140 | __fs32 vs_logversion; /* log format version */ | |
141 | __u32 __unused5; /* unused */ | |
1da177e4 LT |
142 | |
143 | /* | |
144 | * Version 2, Read-only | |
145 | */ | |
0d83f7fc KB |
146 | __fs32 vs_oltext[2]; /* OLT extent and replica */ |
147 | __fs32 vs_oltsize; /* OLT extent size */ | |
148 | __fs32 vs_iauimlen; /* size of inode map */ | |
149 | __fs32 vs_iausize; /* size of IAU in blocks */ | |
150 | __fs32 vs_dinosize; /* size of inode in bytes */ | |
151 | __fs32 vs_old_dniaddr; /* indir levels per inode */ | |
152 | __fs32 vs_checksum2; /* checksum of V2 RO */ | |
1da177e4 LT |
153 | |
154 | /* | |
155 | * Actually much more... | |
156 | */ | |
157 | }; | |
158 | ||
159 | ||
160 | /* | |
161 | * In core superblock filesystem private data for VxFS. | |
162 | */ | |
163 | struct vxfs_sb_info { | |
552c0348 | 164 | struct vxfs_sb *vsi_raw; /* raw (on disk) superblock */ |
1da177e4 LT |
165 | struct buffer_head *vsi_bp; /* buffer for raw superblock*/ |
166 | struct inode *vsi_fship; /* fileset header inode */ | |
167 | struct inode *vsi_ilist; /* inode list inode */ | |
552c0348 | 168 | struct inode *vsi_stilist; /* structural inode list inode */ |
1da177e4 LT |
169 | u_long vsi_iext; /* initial inode list */ |
170 | ino_t vsi_fshino; /* fileset header inode */ | |
171 | daddr_t vsi_oltext; /* OLT extent */ | |
172 | daddr_t vsi_oltsize; /* OLT size */ | |
0d83f7fc | 173 | enum vxfs_byte_order byte_order; |
1da177e4 LT |
174 | }; |
175 | ||
0d83f7fc KB |
176 | static inline u16 fs16_to_cpu(struct vxfs_sb_info *sbi, __fs16 a) |
177 | { | |
178 | if (sbi->byte_order == VXFS_BO_BE) | |
179 | return be16_to_cpu((__force __be16)a); | |
180 | else | |
181 | return le16_to_cpu((__force __le16)a); | |
182 | } | |
183 | ||
184 | static inline u32 fs32_to_cpu(struct vxfs_sb_info *sbi, __fs32 a) | |
185 | { | |
186 | if (sbi->byte_order == VXFS_BO_BE) | |
187 | return be32_to_cpu((__force __be32)a); | |
188 | else | |
189 | return le32_to_cpu((__force __le32)a); | |
190 | } | |
191 | ||
192 | static inline u64 fs64_to_cpu(struct vxfs_sb_info *sbi, __fs64 a) | |
193 | { | |
194 | if (sbi->byte_order == VXFS_BO_BE) | |
195 | return be64_to_cpu((__force __be64)a); | |
196 | else | |
197 | return le64_to_cpu((__force __le64)a); | |
198 | } | |
1da177e4 LT |
199 | |
200 | /* | |
201 | * File modes. File types above 0xf000 are vxfs internal only, they should | |
202 | * not be passed back to higher levels of the system. vxfs file types must | |
203 | * never have one of the regular file type bits set. | |
204 | */ | |
205 | enum vxfs_mode { | |
206 | VXFS_ISUID = 0x00000800, /* setuid */ | |
207 | VXFS_ISGID = 0x00000400, /* setgid */ | |
208 | VXFS_ISVTX = 0x00000200, /* sticky bit */ | |
209 | VXFS_IREAD = 0x00000100, /* read */ | |
210 | VXFS_IWRITE = 0x00000080, /* write */ | |
211 | VXFS_IEXEC = 0x00000040, /* exec */ | |
212 | ||
213 | VXFS_IFIFO = 0x00001000, /* Named pipe */ | |
214 | VXFS_IFCHR = 0x00002000, /* Character device */ | |
215 | VXFS_IFDIR = 0x00004000, /* Directory */ | |
216 | VXFS_IFNAM = 0x00005000, /* Xenix device ?? */ | |
217 | VXFS_IFBLK = 0x00006000, /* Block device */ | |
218 | VXFS_IFREG = 0x00008000, /* Regular file */ | |
219 | VXFS_IFCMP = 0x00009000, /* Compressed file ?!? */ | |
220 | VXFS_IFLNK = 0x0000a000, /* Symlink */ | |
221 | VXFS_IFSOC = 0x0000c000, /* Socket */ | |
222 | ||
223 | /* VxFS internal */ | |
224 | VXFS_IFFSH = 0x10000000, /* Fileset header */ | |
225 | VXFS_IFILT = 0x20000000, /* Inode list */ | |
226 | VXFS_IFIAU = 0x30000000, /* Inode allocation unit */ | |
227 | VXFS_IFCUT = 0x40000000, /* Current usage table */ | |
228 | VXFS_IFATT = 0x50000000, /* Attr. inode */ | |
229 | VXFS_IFLCT = 0x60000000, /* Link count table */ | |
230 | VXFS_IFIAT = 0x70000000, /* Indirect attribute file */ | |
231 | VXFS_IFEMR = 0x80000000, /* Extent map reorg file */ | |
232 | VXFS_IFQUO = 0x90000000, /* BSD quota file */ | |
233 | VXFS_IFPTI = 0xa0000000, /* "Pass through" inode */ | |
234 | VXFS_IFLAB = 0x11000000, /* Device label file */ | |
235 | VXFS_IFOLT = 0x12000000, /* OLT file */ | |
236 | VXFS_IFLOG = 0x13000000, /* Log file */ | |
237 | VXFS_IFEMP = 0x14000000, /* Extent map file */ | |
238 | VXFS_IFEAU = 0x15000000, /* Extent AU file */ | |
239 | VXFS_IFAUS = 0x16000000, /* Extent AU summary file */ | |
240 | VXFS_IFDEV = 0x17000000, /* Device config file */ | |
241 | ||
242 | }; | |
243 | ||
244 | #define VXFS_TYPE_MASK 0xfffff000 | |
245 | ||
246 | #define VXFS_IS_TYPE(ip,type) (((ip)->vii_mode & VXFS_TYPE_MASK) == (type)) | |
247 | #define VXFS_ISFIFO(x) VXFS_IS_TYPE((x),VXFS_IFIFO) | |
248 | #define VXFS_ISCHR(x) VXFS_IS_TYPE((x),VXFS_IFCHR) | |
249 | #define VXFS_ISDIR(x) VXFS_IS_TYPE((x),VXFS_IFDIR) | |
250 | #define VXFS_ISNAM(x) VXFS_IS_TYPE((x),VXFS_IFNAM) | |
251 | #define VXFS_ISBLK(x) VXFS_IS_TYPE((x),VXFS_IFBLK) | |
252 | #define VXFS_ISLNK(x) VXFS_IS_TYPE((x),VXFS_IFLNK) | |
253 | #define VXFS_ISREG(x) VXFS_IS_TYPE((x),VXFS_IFREG) | |
254 | #define VXFS_ISCMP(x) VXFS_IS_TYPE((x),VXFS_IFCMP) | |
255 | #define VXFS_ISSOC(x) VXFS_IS_TYPE((x),VXFS_IFSOC) | |
256 | ||
257 | #define VXFS_ISFSH(x) VXFS_IS_TYPE((x),VXFS_IFFSH) | |
258 | #define VXFS_ISILT(x) VXFS_IS_TYPE((x),VXFS_IFILT) | |
259 | ||
260 | /* | |
261 | * Inmode organisation types. | |
262 | */ | |
263 | enum { | |
264 | VXFS_ORG_NONE = 0, /* Inode has *no* format ?!? */ | |
265 | VXFS_ORG_EXT4 = 1, /* Ext4 */ | |
266 | VXFS_ORG_IMMED = 2, /* All data stored in inode */ | |
267 | VXFS_ORG_TYPED = 3, /* Typed extents */ | |
268 | }; | |
269 | ||
270 | #define VXFS_IS_ORG(ip,org) ((ip)->vii_orgtype == (org)) | |
271 | #define VXFS_ISNONE(ip) VXFS_IS_ORG((ip), VXFS_ORG_NONE) | |
272 | #define VXFS_ISEXT4(ip) VXFS_IS_ORG((ip), VXFS_ORG_EXT4) | |
273 | #define VXFS_ISIMMED(ip) VXFS_IS_ORG((ip), VXFS_ORG_IMMED) | |
274 | #define VXFS_ISTYPED(ip) VXFS_IS_ORG((ip), VXFS_ORG_TYPED) | |
275 | ||
1da177e4 LT |
276 | /* |
277 | * Get filesystem private data from VFS superblock. | |
278 | */ | |
279 | #define VXFS_SBI(sbp) \ | |
280 | ((struct vxfs_sb_info *)(sbp)->s_fs_info) | |
281 | ||
282 | #endif /* _VXFS_SUPER_H_ */ |