1 /*
2  *  GRUB  --  GRand Unified Bootloader
3  *  Copyright (C) 1999,2000,2001,2002,2003,2004  Free Software Foundation, Inc.
4  *
5  *  This program is free software; you can redistribute it and/or modify
6  *  it under the terms of the GNU General Public License as published by
7  *  the Free Software Foundation; either version 2 of the License, or
8  *  (at your option) any later version.
9  *
10  *  This program is distributed in the hope that it will be useful,
11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  *  GNU General Public License for more details.
14  *
15  *  You should have received a copy of the GNU General Public License
16  *  along with this program; If not, see <http://www.gnu.org/licenses/>.
17  */
18 /*
19  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
20  * Use is subject to license terms.
21  */
22 
23 #ifndef	_SYS_FS_ZFS_ZNODE_H
24 #define	_SYS_FS_ZFS_ZNODE_H
25 
26 #define	MASTER_NODE_OBJ	1
27 #define	ZFS_ROOT_OBJ		"ROOT"
28 #define	ZPL_VERSION_STR		"VERSION"
29 #define	ZFS_SA_ATTRS		"SA_ATTRS"
30 
31 #define	ZPL_VERSION		5ULL
32 
33 #define	ZFS_DIRENT_OBJ(de) BF64_GET(de, 0, 48)
34 
35 /*
36  * This is the persistent portion of the znode.  It is stored
37  * in the "bonus buffer" of the file.  Short symbolic links
38  * are also stored in the bonus buffer.
39  */
40 typedef struct znode_phys {
41 	uint64_t zp_atime[2];		/*  0 - last file access time */
42 	uint64_t zp_mtime[2];		/* 16 - last file modification time */
43 	uint64_t zp_ctime[2];		/* 32 - last file change time */
44 	uint64_t zp_crtime[2];		/* 48 - creation time */
45 	uint64_t zp_gen;		/* 64 - generation (txg of creation) */
46 	uint64_t zp_mode;		/* 72 - file mode bits */
47 	uint64_t zp_size;		/* 80 - size of file */
48 	uint64_t zp_parent;		/* 88 - directory parent (`..') */
49 	uint64_t zp_links;		/* 96 - number of links to file */
50 	uint64_t zp_xattr;		/* 104 - DMU object for xattrs */
51 	uint64_t zp_rdev;		/* 112 - dev_t for VBLK & VCHR files */
52 	uint64_t zp_flags;		/* 120 - persistent flags */
53 	uint64_t zp_uid;		/* 128 - file owner */
54 	uint64_t zp_gid;		/* 136 - owning group */
55 	uint64_t zp_pad[4];		/* 144 - future */
56 	zfs_znode_acl_t zp_acl;		/* 176 - 263 ACL */
57 	/*
58 	 * Data may pad out any remaining bytes in the znode buffer, eg:
59 	 *
60 	 * |<---------------------- dnode_phys (512) ------------------------>|
61 	 * |<-- dnode (192) --->|<----------- "bonus" buffer (320) ---------->|
62 	 *			|<---- znode (264) ---->|<---- data (56) ---->|
63 	 *
64 	 * At present, we only use this space to store symbolic links.
65 	 */
66 } znode_phys_t;
67 
68 #endif	/* _SYS_FS_ZFS_ZNODE_H */
69