xref: /openbmc/u-boot/include/zfs/zfs_znode.h (revision e8f80a5a)
1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  *  GRUB  --  GRand Unified Bootloader
4  *  Copyright (C) 1999,2000,2001,2002,2003,2004  Free Software Foundation, Inc.
5  */
6 /*
7  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
8  * Use is subject to license terms.
9  */
10 
11 #ifndef	_SYS_FS_ZFS_ZNODE_H
12 #define	_SYS_FS_ZFS_ZNODE_H
13 
14 #include <zfs/zfs_acl.h>
15 
16 #define	MASTER_NODE_OBJ	1
17 #define	ZFS_ROOT_OBJ		"ROOT"
18 #define	ZPL_VERSION_STR		"VERSION"
19 #define	ZFS_SA_ATTRS		"SA_ATTRS"
20 
21 #define	ZPL_VERSION		5ULL
22 
23 #define	ZFS_DIRENT_OBJ(de) BF64_GET(de, 0, 48)
24 
25 /*
26  * This is the persistent portion of the znode.  It is stored
27  * in the "bonus buffer" of the file.  Short symbolic links
28  * are also stored in the bonus buffer.
29  */
30 typedef struct znode_phys {
31 	uint64_t zp_atime[2];      /*  0 - last file access time */
32 	uint64_t zp_mtime[2];	/* 16 - last file modification time */
33 	uint64_t zp_ctime[2];	/* 32 - last file change time */
34 	uint64_t zp_crtime[2];	/* 48 - creation time */
35 	uint64_t zp_gen;		/* 64 - generation (txg of creation) */
36 	uint64_t zp_mode;		/* 72 - file mode bits */
37 	uint64_t zp_size;		/* 80 - size of file */
38 	uint64_t zp_parent;	/* 88 - directory parent (`..') */
39 	uint64_t zp_links;		/* 96 - number of links to file */
40 	uint64_t zp_xattr;		/* 104 - DMU object for xattrs */
41 	uint64_t zp_rdev;		/* 112 - dev_t for VBLK & VCHR files */
42 	uint64_t zp_flags;		/* 120 - persistent flags */
43 	uint64_t zp_uid;		/* 128 - file owner */
44 	uint64_t zp_gid;		/* 136 - owning group */
45 	uint64_t zp_pad[4];	/* 144 - future */
46 	zfs_znode_acl_t zp_acl;		/* 176 - 263 ACL */
47 	/*
48 	 * Data may pad out any remaining bytes in the znode buffer, eg:
49 	 *
50 	 * |<---------------------- dnode_phys (512) ------------------------>|
51 	 * |<-- dnode (192) --->|<----------- "bonus" buffer (320) ---------->|
52 	 *			|<---- znode (264) ---->|<---- data (56) ---->|
53 	 *
54 	 * At present, we only use this space to store symbolic links.
55 	 */
56 } znode_phys_t;
57 
58 #endif	/* _SYS_FS_ZFS_ZNODE_H */
59