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Jorgen Lundman4d3c95f2012-07-19 20:48:25 +00001/*
2 * GRUB -- GRand Unified Bootloader
3 * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
4 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02005 * SPDX-License-Identifier: GPL-2.0+
Jorgen Lundman4d3c95f2012-07-19 20:48:25 +00006 */
7/*
8 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
9 * Use is subject to license terms.
10 */
11
12#ifndef _SYS_FS_ZFS_ZNODE_H
13#define _SYS_FS_ZFS_ZNODE_H
14
15#include <zfs/zfs_acl.h>
16
17#define MASTER_NODE_OBJ 1
18#define ZFS_ROOT_OBJ "ROOT"
19#define ZPL_VERSION_STR "VERSION"
20#define ZFS_SA_ATTRS "SA_ATTRS"
21
22#define ZPL_VERSION 5ULL
23
24#define ZFS_DIRENT_OBJ(de) BF64_GET(de, 0, 48)
25
26/*
27 * This is the persistent portion of the znode. It is stored
28 * in the "bonus buffer" of the file. Short symbolic links
29 * are also stored in the bonus buffer.
30 */
31typedef struct znode_phys {
32 uint64_t zp_atime[2]; /* 0 - last file access time */
33 uint64_t zp_mtime[2]; /* 16 - last file modification time */
34 uint64_t zp_ctime[2]; /* 32 - last file change time */
35 uint64_t zp_crtime[2]; /* 48 - creation time */
36 uint64_t zp_gen; /* 64 - generation (txg of creation) */
37 uint64_t zp_mode; /* 72 - file mode bits */
38 uint64_t zp_size; /* 80 - size of file */
39 uint64_t zp_parent; /* 88 - directory parent (`..') */
40 uint64_t zp_links; /* 96 - number of links to file */
41 uint64_t zp_xattr; /* 104 - DMU object for xattrs */
42 uint64_t zp_rdev; /* 112 - dev_t for VBLK & VCHR files */
43 uint64_t zp_flags; /* 120 - persistent flags */
44 uint64_t zp_uid; /* 128 - file owner */
45 uint64_t zp_gid; /* 136 - owning group */
46 uint64_t zp_pad[4]; /* 144 - future */
47 zfs_znode_acl_t zp_acl; /* 176 - 263 ACL */
48 /*
49 * Data may pad out any remaining bytes in the znode buffer, eg:
50 *
51 * |<---------------------- dnode_phys (512) ------------------------>|
52 * |<-- dnode (192) --->|<----------- "bonus" buffer (320) ---------->|
53 * |<---- znode (264) ---->|<---- data (56) ---->|
54 *
55 * At present, we only use this space to store symbolic links.
56 */
57} znode_phys_t;
58
59#endif /* _SYS_FS_ZFS_ZNODE_H */