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_INODE_H_
31 #define _VXFS_INODE_H_
32 
33 /*
34  * Veritas filesystem driver - inode structure.
35  *
36  * This file contains the definition of the disk and core
37  * inodes of the Veritas Filesystem.
38  */
39 
40 
41 #define VXFS_ISIZE		0x100		/* Inode size */
42 
43 #define VXFS_NDADDR		10		/* Number of direct addrs in inode */
44 #define VXFS_NIADDR		2		/* Number of indirect addrs in inode */
45 #define VXFS_NIMMED		96		/* Size of immediate data in inode */
46 #define VXFS_NTYPED		6		/* Num of typed extents */
47 
48 #define VXFS_TYPED_OFFSETMASK	(0x00FFFFFFFFFFFFFFULL)
49 #define VXFS_TYPED_TYPEMASK	(0xFF00000000000000ULL)
50 #define VXFS_TYPED_TYPESHIFT	56
51 
52 #define VXFS_TYPED_PER_BLOCK(sbp) \
53 	((sbp)->s_blocksize / sizeof(struct vxfs_typed))
54 
55 /*
56  * Possible extent descriptor types for %VXFS_ORG_TYPED extents.
57  */
58 enum {
59 	VXFS_TYPED_INDIRECT		= 1,
60 	VXFS_TYPED_DATA			= 2,
61 	VXFS_TYPED_INDIRECT_DEV4	= 3,
62 	VXFS_TYPED_DATA_DEV4		= 4,
63 };
64 
65 /*
66  * Data stored immediately in the inode.
67  */
68 struct vxfs_immed {
69 	u_int8_t	vi_immed[VXFS_NIMMED];
70 };
71 
72 struct vxfs_ext4 {
73 	u_int32_t		ve4_spare;		/* ?? */
74 	u_int32_t		ve4_indsize;		/* Indirect extent size */
75 	vx_daddr_t		ve4_indir[VXFS_NIADDR];	/* Indirect extents */
76 	struct direct {					/* Direct extents */
77 		vx_daddr_t	extent;			/* Extent number */
78 		int32_t		size;			/* Size of extent */
79 	} ve4_direct[VXFS_NDADDR];
80 };
81 
82 struct vxfs_typed {
83 	u_int64_t	vt_hdr;		/* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */
84 	vx_daddr_t	vt_block;	/* Extent block */
85 	int32_t		vt_size;	/* Size in blocks */
86 };
87 
88 struct vxfs_typed_dev4 {
89 	u_int64_t	vd4_hdr;	/* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */
90 	u_int64_t	vd4_block;	/* Extent block */
91 	u_int64_t	vd4_size;	/* Size in blocks */
92 	int32_t		vd4_dev;	/* Device ID */
93 	u_int32_t	__pad1;
94 };
95 
96 /*
97  * The inode as contained on the physical device.
98  */
99 struct vxfs_dinode {
100 	int32_t		vdi_mode;
101 	u_int32_t	vdi_nlink;	/* Link count */
102 	u_int32_t	vdi_uid;	/* UID */
103 	u_int32_t	vdi_gid;	/* GID */
104 	u_int64_t	vdi_size;	/* Inode size in bytes */
105 	u_int32_t	vdi_atime;	/* Last time accessed - sec */
106 	u_int32_t	vdi_autime;	/* Last time accessed - usec */
107 	u_int32_t	vdi_mtime;	/* Last modify time - sec */
108 	u_int32_t	vdi_mutime;	/* Last modify time - usec */
109 	u_int32_t	vdi_ctime;	/* Create time - sec */
110 	u_int32_t	vdi_cutime;	/* Create time - usec */
111 	u_int8_t	vdi_aflags;	/* Allocation flags */
112 	u_int8_t	vdi_orgtype;	/* Organisation type */
113 	u_int16_t	vdi_eopflags;
114 	u_int32_t	vdi_eopdata;
115 	union {
116 		u_int32_t		rdev;
117 		u_int32_t		dotdot;
118 		struct {
119 			u_int32_t	reserved;
120 			u_int32_t	fixextsize;
121 		} i_regular;
122 		struct {
123 			u_int32_t	matchino;
124 			u_int32_t	fsetindex;
125 		} i_vxspec;
126 		u_int64_t		align;
127 	} vdi_ftarea;
128 	u_int32_t	vdi_blocks;	/* How much blocks does inode occupy */
129 	u_int32_t	vdi_gen;	/* Inode generation */
130 	u_int64_t	vdi_version;	/* Version */
131 	union {
132 		struct vxfs_immed	immed;
133 		struct vxfs_ext4	ext4;
134 		struct vxfs_typed	typed[VXFS_NTYPED];
135 	} vdi_org;
136 	u_int32_t	vdi_iattrino;
137 };
138 
139 #define vdi_rdev	vdi_ftarea.rdev
140 #define vdi_dotdot	vdi_ftarea.dotdot
141 #define vdi_fixextsize	vdi_ftarea.regular.fixextsize
142 #define vdi_matchino	vdi_ftarea.vxspec.matchino
143 #define vdi_fsetindex	vdi_ftarea.vxspec.fsetindex
144 
145 #define vdi_immed	vdi_org.immed
146 #define vdi_ext4	vdi_org.ext4
147 #define vdi_typed	vdi_org.typed
148 
149 
150 /*
151  * The inode as represented in the main memory.
152  *
153  * TBD: This should become a separate structure...
154  */
155 #define vxfs_inode_info	vxfs_dinode
156 
157 #define vii_mode	vdi_mode
158 #define vii_uid		vdi_uid
159 #define vii_gid		vdi_gid
160 #define vii_nlink	vdi_nlink
161 #define vii_size	vdi_size
162 #define vii_atime	vdi_atime
163 #define vii_ctime	vdi_ctime
164 #define vii_mtime	vdi_mtime
165 #define vii_blocks	vdi_blocks
166 #define vii_org		vdi_org
167 #define vii_orgtype	vdi_orgtype
168 #define vii_gen		vdi_gen
169 
170 #define vii_rdev	vdi_ftarea.rdev
171 #define vii_dotdot	vdi_ftarea.dotdot
172 #define vii_fixextsize	vdi_ftarea.regular.fixextsize
173 #define vii_matchino	vdi_ftarea.vxspec.matchino
174 #define vii_fsetindex	vdi_ftarea.vxspec.fsetindex
175 
176 #define vii_immed	vdi_org.immed
177 #define vii_ext4	vdi_org.ext4
178 #define vii_typed	vdi_org.typed
179 
180 #endif /* _VXFS_INODE_H_ */
181