1 /*
2  * Copyright (c) 2000-2001 Christoph Hellwig.
3  * Copyright (c) 2016 Krzysztof Blaszkowski
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_INODE_H_
32 #define _VXFS_INODE_H_
33 
34 /*
35  * Veritas filesystem driver - inode structure.
36  *
37  * This file contains the definition of the disk and core
38  * inodes of the Veritas Filesystem.
39  */
40 
41 
42 #define VXFS_ISIZE		0x100		/* Inode size */
43 
44 #define VXFS_NDADDR		10		/* Number of direct addrs in inode */
45 #define VXFS_NIADDR		2		/* Number of indirect addrs in inode */
46 #define VXFS_NIMMED		96		/* Size of immediate data in inode */
47 #define VXFS_NTYPED		6		/* Num of typed extents */
48 
49 #define VXFS_TYPED_OFFSETMASK	(0x00FFFFFFFFFFFFFFULL)
50 #define VXFS_TYPED_TYPEMASK	(0xFF00000000000000ULL)
51 #define VXFS_TYPED_TYPESHIFT	56
52 
53 #define VXFS_TYPED_PER_BLOCK(sbp) \
54 	((sbp)->s_blocksize / sizeof(struct vxfs_typed))
55 
56 /*
57  * Possible extent descriptor types for %VXFS_ORG_TYPED extents.
58  */
59 enum {
60 	VXFS_TYPED_INDIRECT		= 1,
61 	VXFS_TYPED_DATA			= 2,
62 	VXFS_TYPED_INDIRECT_DEV4	= 3,
63 	VXFS_TYPED_DATA_DEV4		= 4,
64 };
65 
66 /*
67  * Data stored immediately in the inode.
68  */
69 struct vxfs_immed {
70 	__u8			vi_immed[VXFS_NIMMED];
71 };
72 
73 struct vxfs_ext4 {
74 	__fs32			ve4_spare;		/* ?? */
75 	__fs32			ve4_indsize;		/* Indirect extent size */
76 	__fs32			ve4_indir[VXFS_NIADDR];	/* Indirect extents */
77 	struct direct {					/* Direct extents */
78 		__fs32		extent;			/* Extent number */
79 		__fs32		size;			/* Size of extent */
80 	} ve4_direct[VXFS_NDADDR];
81 };
82 
83 struct vxfs_typed {
84 	__fs64		vt_hdr;		/* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */
85 	__fs32		vt_block;	/* Extent block */
86 	__fs32		vt_size;	/* Size in blocks */
87 };
88 
89 struct vxfs_typed_dev4 {
90 	__fs64		vd4_hdr;	/* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */
91 	__fs64		vd4_block;	/* Extent block */
92 	__fs64		vd4_size;	/* Size in blocks */
93 	__fs32		vd4_dev;	/* Device ID */
94 	__u8		__pad1;
95 };
96 
97 /*
98  * The inode as contained on the physical device.
99  */
100 struct vxfs_dinode {
101 	__fs32		vdi_mode;
102 	__fs32		vdi_nlink;	/* Link count */
103 	__fs32		vdi_uid;	/* UID */
104 	__fs32		vdi_gid;	/* GID */
105 	__fs64		vdi_size;	/* Inode size in bytes */
106 	__fs32		vdi_atime;	/* Last time accessed - sec */
107 	__fs32		vdi_autime;	/* Last time accessed - usec */
108 	__fs32		vdi_mtime;	/* Last modify time - sec */
109 	__fs32		vdi_mutime;	/* Last modify time - usec */
110 	__fs32		vdi_ctime;	/* Create time - sec */
111 	__fs32		vdi_cutime;	/* Create time - usec */
112 	__u8		vdi_aflags;	/* Allocation flags */
113 	__u8		vdi_orgtype;	/* Organisation type */
114 	__fs16		vdi_eopflags;
115 	__fs32		vdi_eopdata;
116 	union {
117 		__fs32			rdev;
118 		__fs32			dotdot;
119 		struct {
120 			__u32		reserved;
121 			__fs32		fixextsize;
122 		} i_regular;
123 		struct {
124 			__fs32		matchino;
125 			__fs32		fsetindex;
126 		} i_vxspec;
127 		__u64			align;
128 	} vdi_ftarea;
129 	__fs32		vdi_blocks;	/* How much blocks does inode occupy */
130 	__fs32		vdi_gen;	/* Inode generation */
131 	__fs64		vdi_version;	/* Version */
132 	union {
133 		struct vxfs_immed	immed;
134 		struct vxfs_ext4	ext4;
135 		struct vxfs_typed	typed[VXFS_NTYPED];
136 	} vdi_org;
137 	__fs32		vdi_iattrino;
138 };
139 
140 #define vdi_rdev	vdi_ftarea.rdev
141 #define vdi_dotdot	vdi_ftarea.dotdot
142 #define vdi_fixextsize	vdi_ftarea.regular.fixextsize
143 #define vdi_matchino	vdi_ftarea.vxspec.matchino
144 #define vdi_fsetindex	vdi_ftarea.vxspec.fsetindex
145 
146 #define vdi_immed	vdi_org.immed
147 #define vdi_ext4	vdi_org.ext4
148 #define vdi_typed	vdi_org.typed
149 
150 
151 /*
152  * The inode as represented in the main memory.
153  */
154 struct vxfs_inode_info {
155 	struct inode	vfs_inode;
156 
157 	__u32		vii_mode;
158 	__u32		vii_nlink;	/* Link count */
159 	__u32		vii_uid;	/* UID */
160 	__u32		vii_gid;	/* GID */
161 	__u64		vii_size;	/* Inode size in bytes */
162 	__u32		vii_atime;	/* Last time accessed - sec */
163 	__u32		vii_autime;	/* Last time accessed - usec */
164 	__u32		vii_mtime;	/* Last modify time - sec */
165 	__u32		vii_mutime;	/* Last modify time - usec */
166 	__u32		vii_ctime;	/* Create time - sec */
167 	__u32		vii_cutime;	/* Create time - usec */
168 	__u8		vii_orgtype;	/* Organisation type */
169 	union {
170 		__u32			rdev;
171 		__u32			dotdot;
172 	} vii_ftarea;
173 	__u32		vii_blocks;	/* How much blocks does inode occupy */
174 	__u32		vii_gen;	/* Inode generation */
175 	union {
176 		struct vxfs_immed	immed;
177 		struct vxfs_ext4	ext4;
178 		struct vxfs_typed	typed[VXFS_NTYPED];
179 	} vii_org;
180 };
181 
182 #define vii_rdev	vii_ftarea.rdev
183 #define vii_dotdot	vii_ftarea.dotdot
184 
185 #define vii_immed	vii_org.immed
186 #define vii_ext4	vii_org.ext4
187 #define vii_typed	vii_org.typed
188 
VXFS_INO(struct inode * inode)189 static inline struct vxfs_inode_info *VXFS_INO(struct inode *inode)
190 {
191 	return container_of(inode, struct vxfs_inode_info, vfs_inode);
192 }
193 
194 #endif /* _VXFS_INODE_H_ */
195