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1/*
2 * Copyright (c) 2000-2001 Christoph Hellwig.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions, and the following disclaimer,
10 * without modification.
11 * 2. The name of the author may not be used to endorse or promote products
12 * derived from this software without specific prior written permission.
13 *
14 * Alternatively, this software may be distributed under the terms of the
15 * GNU General Public License ("GPL").
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 */
30#ifndef _VXFS_SUPER_H_
31#define _VXFS_SUPER_H_
32
33/*
34 * Veritas filesystem driver - superblock structure.
35 *
36 * This file contains the definition of the disk and core
37 * superblocks of the Veritas Filesystem.
38 */
39#include <linux/types.h>
40#include "vxfs_kcompat.h"
41
42
43/*
44 * Data types for use with the VxFS ondisk format.
45 */
46typedef int32_t vx_daddr_t;
47typedef int32_t vx_ino_t;
48
49/*
50 * Superblock magic number (vxfs_super->vs_magic).
51 */
52#define VXFS_SUPER_MAGIC 0xa501FCF5
53
54/*
55 * The root inode.
56 */
57#define VXFS_ROOT_INO 2
58
59/*
60 * Num of entries in free extent array
61 */
62#define VXFS_NEFREE 32
63
64
65/*
66 * VxFS superblock (disk).
67 */
68struct vxfs_sb {
69 /*
70 * Readonly fields for the version 1 superblock.
71 *
72 * Lots of this fields are no more used by version 2
73 * and never filesystems.
74 */
75 u_int32_t vs_magic; /* Magic number */
76 int32_t vs_version; /* VxFS version */
77 u_int32_t vs_ctime; /* create time - secs */
78 u_int32_t vs_cutime; /* create time - usecs */
79 int32_t __unused1; /* unused */
80 int32_t __unused2; /* unused */
81 vx_daddr_t vs_old_logstart; /* obsolete */
82 vx_daddr_t vs_old_logend; /* obsolete */
83 int32_t vs_bsize; /* block size */
84 int32_t vs_size; /* number of blocks */
85 int32_t vs_dsize; /* number of data blocks */
86 u_int32_t vs_old_ninode; /* obsolete */
87 int32_t vs_old_nau; /* obsolete */
88 int32_t __unused3; /* unused */
89 int32_t vs_old_defiextsize; /* obsolete */
90 int32_t vs_old_ilbsize; /* obsolete */
91 int32_t vs_immedlen; /* size of immediate data area */
92 int32_t vs_ndaddr; /* number of direct extentes */
93 vx_daddr_t vs_firstau; /* address of first AU */
94 vx_daddr_t vs_emap; /* offset of extent map in AU */
95 vx_daddr_t vs_imap; /* offset of inode map in AU */
96 vx_daddr_t vs_iextop; /* offset of ExtOp. map in AU */
97 vx_daddr_t vs_istart; /* offset of inode list in AU */
98 vx_daddr_t vs_bstart; /* offset of fdblock in AU */
99 vx_daddr_t vs_femap; /* aufirst + emap */
100 vx_daddr_t vs_fimap; /* aufirst + imap */
101 vx_daddr_t vs_fiextop; /* aufirst + iextop */
102 vx_daddr_t vs_fistart; /* aufirst + istart */
103 vx_daddr_t vs_fbstart; /* aufirst + bstart */
104 int32_t vs_nindir; /* number of entries in indir */
105 int32_t vs_aulen; /* length of AU in blocks */
106 int32_t vs_auimlen; /* length of imap in blocks */
107 int32_t vs_auemlen; /* length of emap in blocks */
108 int32_t vs_auilen; /* length of ilist in blocks */
109 int32_t vs_aupad; /* length of pad in blocks */
110 int32_t vs_aublocks; /* data blocks in AU */
111 int32_t vs_maxtier; /* log base 2 of aublocks */
112 int32_t vs_inopb; /* number of inodes per blk */
113 int32_t vs_old_inopau; /* obsolete */
114 int32_t vs_old_inopilb; /* obsolete */
115 int32_t vs_old_ndiripau; /* obsolete */
116 int32_t vs_iaddrlen; /* size of indirect addr ext. */
117 int32_t vs_bshift; /* log base 2 of bsize */
118 int32_t vs_inoshift; /* log base 2 of inobp */
119 int32_t vs_bmask; /* ~( bsize - 1 ) */
120 int32_t vs_boffmask; /* bsize - 1 */
121 int32_t vs_old_inomask; /* old_inopilb - 1 */
122 int32_t vs_checksum; /* checksum of V1 data */
123
124 /*
125 * Version 1, writable
126 */
127 int32_t vs_free; /* number of free blocks */
128 int32_t vs_ifree; /* number of free inodes */
129 int32_t vs_efree[VXFS_NEFREE]; /* number of free extents by size */
130 int32_t vs_flags; /* flags ?!? */
131 u_int8_t vs_mod; /* filesystem has been changed */
132 u_int8_t vs_clean; /* clean FS */
133 u_int16_t __unused4; /* unused */
134 u_int32_t vs_firstlogid; /* mount time log ID */
135 u_int32_t vs_wtime; /* last time written - sec */
136 u_int32_t vs_wutime; /* last time written - usec */
137 u_int8_t vs_fname[6]; /* FS name */
138 u_int8_t vs_fpack[6]; /* FS pack name */
139 int32_t vs_logversion; /* log format version */
140 int32_t __unused5; /* unused */
141
142 /*
143 * Version 2, Read-only
144 */
145 vx_daddr_t vs_oltext[2]; /* OLT extent and replica */
146 int32_t vs_oltsize; /* OLT extent size */
147 int32_t vs_iauimlen; /* size of inode map */
148 int32_t vs_iausize; /* size of IAU in blocks */
149 int32_t vs_dinosize; /* size of inode in bytes */
150 int32_t vs_old_dniaddr; /* indir levels per inode */
151 int32_t vs_checksum2; /* checksum of V2 RO */
152
153 /*
154 * Actually much more...
155 */
156};
157
158
159/*
160 * In core superblock filesystem private data for VxFS.
161 */
162struct vxfs_sb_info {
163 struct vxfs_sb *vsi_raw; /* raw (on disk) supeblock */
164 struct buffer_head *vsi_bp; /* buffer for raw superblock*/
165 struct inode *vsi_fship; /* fileset header inode */
166 struct inode *vsi_ilist; /* inode list inode */
167 struct inode *vsi_stilist; /* structual inode list inode */
168 u_long vsi_iext; /* initial inode list */
169 ino_t vsi_fshino; /* fileset header inode */
170 daddr_t vsi_oltext; /* OLT extent */
171 daddr_t vsi_oltsize; /* OLT size */
172};
173
174
175/*
176 * File modes. File types above 0xf000 are vxfs internal only, they should
177 * not be passed back to higher levels of the system. vxfs file types must
178 * never have one of the regular file type bits set.
179 */
180enum vxfs_mode {
181 VXFS_ISUID = 0x00000800, /* setuid */
182 VXFS_ISGID = 0x00000400, /* setgid */
183 VXFS_ISVTX = 0x00000200, /* sticky bit */
184 VXFS_IREAD = 0x00000100, /* read */
185 VXFS_IWRITE = 0x00000080, /* write */
186 VXFS_IEXEC = 0x00000040, /* exec */
187
188 VXFS_IFIFO = 0x00001000, /* Named pipe */
189 VXFS_IFCHR = 0x00002000, /* Character device */
190 VXFS_IFDIR = 0x00004000, /* Directory */
191 VXFS_IFNAM = 0x00005000, /* Xenix device ?? */
192 VXFS_IFBLK = 0x00006000, /* Block device */
193 VXFS_IFREG = 0x00008000, /* Regular file */
194 VXFS_IFCMP = 0x00009000, /* Compressed file ?!? */
195 VXFS_IFLNK = 0x0000a000, /* Symlink */
196 VXFS_IFSOC = 0x0000c000, /* Socket */
197
198 /* VxFS internal */
199 VXFS_IFFSH = 0x10000000, /* Fileset header */
200 VXFS_IFILT = 0x20000000, /* Inode list */
201 VXFS_IFIAU = 0x30000000, /* Inode allocation unit */
202 VXFS_IFCUT = 0x40000000, /* Current usage table */
203 VXFS_IFATT = 0x50000000, /* Attr. inode */
204 VXFS_IFLCT = 0x60000000, /* Link count table */
205 VXFS_IFIAT = 0x70000000, /* Indirect attribute file */
206 VXFS_IFEMR = 0x80000000, /* Extent map reorg file */
207 VXFS_IFQUO = 0x90000000, /* BSD quota file */
208 VXFS_IFPTI = 0xa0000000, /* "Pass through" inode */
209 VXFS_IFLAB = 0x11000000, /* Device label file */
210 VXFS_IFOLT = 0x12000000, /* OLT file */
211 VXFS_IFLOG = 0x13000000, /* Log file */
212 VXFS_IFEMP = 0x14000000, /* Extent map file */
213 VXFS_IFEAU = 0x15000000, /* Extent AU file */
214 VXFS_IFAUS = 0x16000000, /* Extent AU summary file */
215 VXFS_IFDEV = 0x17000000, /* Device config file */
216
217};
218
219#define VXFS_TYPE_MASK 0xfffff000
220
221#define VXFS_IS_TYPE(ip,type) (((ip)->vii_mode & VXFS_TYPE_MASK) == (type))
222#define VXFS_ISFIFO(x) VXFS_IS_TYPE((x),VXFS_IFIFO)
223#define VXFS_ISCHR(x) VXFS_IS_TYPE((x),VXFS_IFCHR)
224#define VXFS_ISDIR(x) VXFS_IS_TYPE((x),VXFS_IFDIR)
225#define VXFS_ISNAM(x) VXFS_IS_TYPE((x),VXFS_IFNAM)
226#define VXFS_ISBLK(x) VXFS_IS_TYPE((x),VXFS_IFBLK)
227#define VXFS_ISLNK(x) VXFS_IS_TYPE((x),VXFS_IFLNK)
228#define VXFS_ISREG(x) VXFS_IS_TYPE((x),VXFS_IFREG)
229#define VXFS_ISCMP(x) VXFS_IS_TYPE((x),VXFS_IFCMP)
230#define VXFS_ISSOC(x) VXFS_IS_TYPE((x),VXFS_IFSOC)
231
232#define VXFS_ISFSH(x) VXFS_IS_TYPE((x),VXFS_IFFSH)
233#define VXFS_ISILT(x) VXFS_IS_TYPE((x),VXFS_IFILT)
234
235/*
236 * Inmode organisation types.
237 */
238enum {
239 VXFS_ORG_NONE = 0, /* Inode has *no* format ?!? */
240 VXFS_ORG_EXT4 = 1, /* Ext4 */
241 VXFS_ORG_IMMED = 2, /* All data stored in inode */
242 VXFS_ORG_TYPED = 3, /* Typed extents */
243};
244
245#define VXFS_IS_ORG(ip,org) ((ip)->vii_orgtype == (org))
246#define VXFS_ISNONE(ip) VXFS_IS_ORG((ip), VXFS_ORG_NONE)
247#define VXFS_ISEXT4(ip) VXFS_IS_ORG((ip), VXFS_ORG_EXT4)
248#define VXFS_ISIMMED(ip) VXFS_IS_ORG((ip), VXFS_ORG_IMMED)
249#define VXFS_ISTYPED(ip) VXFS_IS_ORG((ip), VXFS_ORG_TYPED)
250
251
252/*
253 * Get filesystem private data from VFS inode.
254 */
255#define VXFS_INO(ip) \
256 ((struct vxfs_inode_info *)(ip)->u.generic_ip)
257
258/*
259 * Get filesystem private data from VFS superblock.
260 */
261#define VXFS_SBI(sbp) \
262 ((struct vxfs_sb_info *)(sbp)->s_fs_info)
263
264#endif /* _VXFS_SUPER_H_ */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-29 18:46:51 -0500