2 * Copyright (c) 2000-2001 Christoph Hellwig.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
14 * Alternatively, this software may be distributed under the terms of the
15 * GNU General Public License ("GPL").
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
30 #ifndef _VXFS_SUPER_H_
31 #define _VXFS_SUPER_H_
33 #ident "$Id: vxfs.h 1.12 2001/12/28 19:48:03 hch Exp $"
36 * Veritas filesystem driver - superblock structure.
38 * This file contains the definition of the disk and core
39 * superblocks of the Veritas Filesystem.
41 #include <linux/types.h>
42 #include "vxfs_kcompat.h"
46 * Data types for use with the VxFS ondisk format.
48 typedef int32_t vx_daddr_t
;
49 typedef int32_t vx_ino_t
;
52 * Superblock magic number (vxfs_super->vs_magic).
54 #define VXFS_SUPER_MAGIC 0xa501FCF5
59 #define VXFS_ROOT_INO 2
62 * Num of entries in free extent array
64 #define VXFS_NEFREE 32
68 * VxFS superblock (disk).
72 * Readonly fields for the version 1 superblock.
74 * Lots of this fields are no more used by version 2
75 * and never filesystems.
77 u_int32_t vs_magic
; /* Magic number */
78 int32_t vs_version
; /* VxFS version */
79 u_int32_t vs_ctime
; /* create time - secs */
80 u_int32_t vs_cutime
; /* create time - usecs */
81 int32_t __unused1
; /* unused */
82 int32_t __unused2
; /* unused */
83 vx_daddr_t vs_old_logstart
; /* obsolete */
84 vx_daddr_t vs_old_logend
; /* obsolete */
85 int32_t vs_bsize
; /* block size */
86 int32_t vs_size
; /* number of blocks */
87 int32_t vs_dsize
; /* number of data blocks */
88 u_int32_t vs_old_ninode
; /* obsolete */
89 int32_t vs_old_nau
; /* obsolete */
90 int32_t __unused3
; /* unused */
91 int32_t vs_old_defiextsize
; /* obsolete */
92 int32_t vs_old_ilbsize
; /* obsolete */
93 int32_t vs_immedlen
; /* size of immediate data area */
94 int32_t vs_ndaddr
; /* number of direct extentes */
95 vx_daddr_t vs_firstau
; /* address of first AU */
96 vx_daddr_t vs_emap
; /* offset of extent map in AU */
97 vx_daddr_t vs_imap
; /* offset of inode map in AU */
98 vx_daddr_t vs_iextop
; /* offset of ExtOp. map in AU */
99 vx_daddr_t vs_istart
; /* offset of inode list in AU */
100 vx_daddr_t vs_bstart
; /* offset of fdblock in AU */
101 vx_daddr_t vs_femap
; /* aufirst + emap */
102 vx_daddr_t vs_fimap
; /* aufirst + imap */
103 vx_daddr_t vs_fiextop
; /* aufirst + iextop */
104 vx_daddr_t vs_fistart
; /* aufirst + istart */
105 vx_daddr_t vs_fbstart
; /* aufirst + bstart */
106 int32_t vs_nindir
; /* number of entries in indir */
107 int32_t vs_aulen
; /* length of AU in blocks */
108 int32_t vs_auimlen
; /* length of imap in blocks */
109 int32_t vs_auemlen
; /* length of emap in blocks */
110 int32_t vs_auilen
; /* length of ilist in blocks */
111 int32_t vs_aupad
; /* length of pad in blocks */
112 int32_t vs_aublocks
; /* data blocks in AU */
113 int32_t vs_maxtier
; /* log base 2 of aublocks */
114 int32_t vs_inopb
; /* number of inodes per blk */
115 int32_t vs_old_inopau
; /* obsolete */
116 int32_t vs_old_inopilb
; /* obsolete */
117 int32_t vs_old_ndiripau
; /* obsolete */
118 int32_t vs_iaddrlen
; /* size of indirect addr ext. */
119 int32_t vs_bshift
; /* log base 2 of bsize */
120 int32_t vs_inoshift
; /* log base 2 of inobp */
121 int32_t vs_bmask
; /* ~( bsize - 1 ) */
122 int32_t vs_boffmask
; /* bsize - 1 */
123 int32_t vs_old_inomask
; /* old_inopilb - 1 */
124 int32_t vs_checksum
; /* checksum of V1 data */
127 * Version 1, writable
129 int32_t vs_free
; /* number of free blocks */
130 int32_t vs_ifree
; /* number of free inodes */
131 int32_t vs_efree
[VXFS_NEFREE
]; /* number of free extents by size */
132 int32_t vs_flags
; /* flags ?!? */
133 u_int8_t vs_mod
; /* filesystem has been changed */
134 u_int8_t vs_clean
; /* clean FS */
135 u_int16_t __unused4
; /* unused */
136 u_int32_t vs_firstlogid
; /* mount time log ID */
137 u_int32_t vs_wtime
; /* last time written - sec */
138 u_int32_t vs_wutime
; /* last time written - usec */
139 u_int8_t vs_fname
[6]; /* FS name */
140 u_int8_t vs_fpack
[6]; /* FS pack name */
141 int32_t vs_logversion
; /* log format version */
142 int32_t __unused5
; /* unused */
145 * Version 2, Read-only
147 vx_daddr_t vs_oltext
[2]; /* OLT extent and replica */
148 int32_t vs_oltsize
; /* OLT extent size */
149 int32_t vs_iauimlen
; /* size of inode map */
150 int32_t vs_iausize
; /* size of IAU in blocks */
151 int32_t vs_dinosize
; /* size of inode in bytes */
152 int32_t vs_old_dniaddr
; /* indir levels per inode */
153 int32_t vs_checksum2
; /* checksum of V2 RO */
156 * Actually much more...
162 * In core superblock filesystem private data for VxFS.
164 struct vxfs_sb_info
{
165 struct vxfs_sb
*vsi_raw
; /* raw (on disk) supeblock */
166 struct buffer_head
*vsi_bp
; /* buffer for raw superblock*/
167 struct inode
*vsi_fship
; /* fileset header inode */
168 struct inode
*vsi_ilist
; /* inode list inode */
169 struct inode
*vsi_stilist
; /* structual inode list inode */
170 u_long vsi_iext
; /* initial inode list */
171 ino_t vsi_fshino
; /* fileset header inode */
172 daddr_t vsi_oltext
; /* OLT extent */
173 daddr_t vsi_oltsize
; /* OLT size */
178 * File modes. File types above 0xf000 are vxfs internal only, they should
179 * not be passed back to higher levels of the system. vxfs file types must
180 * never have one of the regular file type bits set.
183 VXFS_ISUID
= 0x00000800, /* setuid */
184 VXFS_ISGID
= 0x00000400, /* setgid */
185 VXFS_ISVTX
= 0x00000200, /* sticky bit */
186 VXFS_IREAD
= 0x00000100, /* read */
187 VXFS_IWRITE
= 0x00000080, /* write */
188 VXFS_IEXEC
= 0x00000040, /* exec */
190 VXFS_IFIFO
= 0x00001000, /* Named pipe */
191 VXFS_IFCHR
= 0x00002000, /* Character device */
192 VXFS_IFDIR
= 0x00004000, /* Directory */
193 VXFS_IFNAM
= 0x00005000, /* Xenix device ?? */
194 VXFS_IFBLK
= 0x00006000, /* Block device */
195 VXFS_IFREG
= 0x00008000, /* Regular file */
196 VXFS_IFCMP
= 0x00009000, /* Compressed file ?!? */
197 VXFS_IFLNK
= 0x0000a000, /* Symlink */
198 VXFS_IFSOC
= 0x0000c000, /* Socket */
201 VXFS_IFFSH
= 0x10000000, /* Fileset header */
202 VXFS_IFILT
= 0x20000000, /* Inode list */
203 VXFS_IFIAU
= 0x30000000, /* Inode allocation unit */
204 VXFS_IFCUT
= 0x40000000, /* Current usage table */
205 VXFS_IFATT
= 0x50000000, /* Attr. inode */
206 VXFS_IFLCT
= 0x60000000, /* Link count table */
207 VXFS_IFIAT
= 0x70000000, /* Indirect attribute file */
208 VXFS_IFEMR
= 0x80000000, /* Extent map reorg file */
209 VXFS_IFQUO
= 0x90000000, /* BSD quota file */
210 VXFS_IFPTI
= 0xa0000000, /* "Pass through" inode */
211 VXFS_IFLAB
= 0x11000000, /* Device label file */
212 VXFS_IFOLT
= 0x12000000, /* OLT file */
213 VXFS_IFLOG
= 0x13000000, /* Log file */
214 VXFS_IFEMP
= 0x14000000, /* Extent map file */
215 VXFS_IFEAU
= 0x15000000, /* Extent AU file */
216 VXFS_IFAUS
= 0x16000000, /* Extent AU summary file */
217 VXFS_IFDEV
= 0x17000000, /* Device config file */
221 #define VXFS_TYPE_MASK 0xfffff000
223 #define VXFS_IS_TYPE(ip,type) (((ip)->vii_mode & VXFS_TYPE_MASK) == (type))
224 #define VXFS_ISFIFO(x) VXFS_IS_TYPE((x),VXFS_IFIFO)
225 #define VXFS_ISCHR(x) VXFS_IS_TYPE((x),VXFS_IFCHR)
226 #define VXFS_ISDIR(x) VXFS_IS_TYPE((x),VXFS_IFDIR)
227 #define VXFS_ISNAM(x) VXFS_IS_TYPE((x),VXFS_IFNAM)
228 #define VXFS_ISBLK(x) VXFS_IS_TYPE((x),VXFS_IFBLK)
229 #define VXFS_ISLNK(x) VXFS_IS_TYPE((x),VXFS_IFLNK)
230 #define VXFS_ISREG(x) VXFS_IS_TYPE((x),VXFS_IFREG)
231 #define VXFS_ISCMP(x) VXFS_IS_TYPE((x),VXFS_IFCMP)
232 #define VXFS_ISSOC(x) VXFS_IS_TYPE((x),VXFS_IFSOC)
234 #define VXFS_ISFSH(x) VXFS_IS_TYPE((x),VXFS_IFFSH)
235 #define VXFS_ISILT(x) VXFS_IS_TYPE((x),VXFS_IFILT)
238 * Inmode organisation types.
241 VXFS_ORG_NONE
= 0, /* Inode has *no* format ?!? */
242 VXFS_ORG_EXT4
= 1, /* Ext4 */
243 VXFS_ORG_IMMED
= 2, /* All data stored in inode */
244 VXFS_ORG_TYPED
= 3, /* Typed extents */
247 #define VXFS_IS_ORG(ip,org) ((ip)->vii_orgtype == (org))
248 #define VXFS_ISNONE(ip) VXFS_IS_ORG((ip), VXFS_ORG_NONE)
249 #define VXFS_ISEXT4(ip) VXFS_IS_ORG((ip), VXFS_ORG_EXT4)
250 #define VXFS_ISIMMED(ip) VXFS_IS_ORG((ip), VXFS_ORG_IMMED)
251 #define VXFS_ISTYPED(ip) VXFS_IS_ORG((ip), VXFS_ORG_TYPED)
255 * Get filesystem private data from VFS inode.
257 #define VXFS_INO(ip) \
258 ((struct vxfs_inode_info *)(ip)->u.generic_ip)
261 * Get filesystem private data from VFS superblock.
263 #define VXFS_SBI(sbp) \
264 ((struct vxfs_sb_info *)(sbp)->u.generic_sbp)
266 #endif /* _VXFS_SUPER_H_ */