[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / gfs2_ondisk.h

/*
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU General Public License v.2.
 */

#ifndef __GFS2_ONDISK_DOT_H__
#define __GFS2_ONDISK_DOT_H__

#define GFS2_MAGIC		0x01161970
#define GFS2_BASIC_BLOCK	512
#define GFS2_BASIC_BLOCK_SHIFT	9

/* Lock numbers of the LM_TYPE_NONDISK type */

#define GFS2_MOUNT_LOCK		0
#define GFS2_LIVE_LOCK		1
#define GFS2_TRANS_LOCK		2
#define GFS2_RENAME_LOCK	3

/* Format numbers for various metadata types */

#define GFS2_FORMAT_NONE	0
#define GFS2_FORMAT_SB		100
#define GFS2_FORMAT_RG		200
#define GFS2_FORMAT_RB		300
#define GFS2_FORMAT_DI		400
#define GFS2_FORMAT_IN		500
#define GFS2_FORMAT_LF		600
#define GFS2_FORMAT_JD		700
#define GFS2_FORMAT_LH		800
#define GFS2_FORMAT_LD		900
#define GFS2_FORMAT_LB		1000
#define GFS2_FORMAT_EA		1600
#define GFS2_FORMAT_ED		1700
#define GFS2_FORMAT_QC		1400
/* These are format numbers for entities contained in files */
#define GFS2_FORMAT_RI		1100
#define GFS2_FORMAT_DE		1200
#define GFS2_FORMAT_QU		1500
/* These are part of the superblock */
#define GFS2_FORMAT_FS		1801
#define GFS2_FORMAT_MULTI	1900

/*
 * An on-disk inode number
 */

struct gfs2_inum {
	__be64 no_formal_ino;
	__be64 no_addr;
};

struct gfs2_inum_host {
	__u64 no_formal_ino;
	__u64 no_addr;
};

static inline int gfs2_inum_equal(const struct gfs2_inum_host *ino1,
				  const struct gfs2_inum_host *ino2)
{
	return ino1->no_formal_ino == ino2->no_formal_ino &&
	       ino1->no_addr == ino2->no_addr;
}

/*
 * Generic metadata head structure
 * Every inplace buffer logged in the journal must start with this.
 */

#define GFS2_METATYPE_NONE	0
#define GFS2_METATYPE_SB	1
#define GFS2_METATYPE_RG	2
#define GFS2_METATYPE_RB	3
#define GFS2_METATYPE_DI	4
#define GFS2_METATYPE_IN	5
#define GFS2_METATYPE_LF	6
#define GFS2_METATYPE_JD	7
#define GFS2_METATYPE_LH	8
#define GFS2_METATYPE_LD	9
#define GFS2_METATYPE_LB	12
#define GFS2_METATYPE_EA	10
#define GFS2_METATYPE_ED	11
#define GFS2_METATYPE_QC	14

struct gfs2_meta_header {
	__be32 mh_magic;
	__be32 mh_type;
	__be64 __pad0;		/* Was generation number in gfs1 */
	__be32 mh_format;
	__be32 __pad1;		/* Was incarnation number in gfs1 */
};

struct gfs2_meta_header_host {
	__u32 mh_magic;
	__u32 mh_type;
	__u32 mh_format;
};

/*
 * super-block structure
 *
 * It's probably good if SIZEOF_SB <= GFS2_BASIC_BLOCK (512 bytes)
 *
 * Order is important, need to be able to read old superblocks to do on-disk
 * version upgrades.
 */

/* Address of superblock in GFS2 basic blocks */
#define GFS2_SB_ADDR		128

/* The lock number for the superblock (must be zero) */
#define GFS2_SB_LOCK		0

/* Requirement:  GFS2_LOCKNAME_LEN % 8 == 0
   Includes: the fencing zero at the end */
#define GFS2_LOCKNAME_LEN	64

struct gfs2_sb {
	struct gfs2_meta_header sb_header;

	__be32 sb_fs_format;
	__be32 sb_multihost_format;
	__u32  __pad0;	/* Was superblock flags in gfs1 */

	__be32 sb_bsize;
	__be32 sb_bsize_shift;
	__u32 __pad1;	/* Was journal segment size in gfs1 */

	struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */
	struct gfs2_inum __pad2; /* Was rindex dinode in gfs1 */
	struct gfs2_inum sb_root_dir;

	char sb_lockproto[GFS2_LOCKNAME_LEN];
	char sb_locktable[GFS2_LOCKNAME_LEN];
	/* In gfs1, quota and license dinodes followed */
};

struct gfs2_sb_host {
	struct gfs2_meta_header_host sb_header;

	__u32 sb_fs_format;
	__u32 sb_multihost_format;

	__u32 sb_bsize;
	__u32 sb_bsize_shift;

	struct gfs2_inum_host sb_master_dir; /* Was jindex dinode in gfs1 */
	struct gfs2_inum_host sb_root_dir;

	char sb_lockproto[GFS2_LOCKNAME_LEN];
	char sb_locktable[GFS2_LOCKNAME_LEN];
	/* In gfs1, quota and license dinodes followed */
};

/*
 * resource index structure
 */

struct gfs2_rindex {
	__be64 ri_addr;	/* grp block disk address */
	__be32 ri_length;	/* length of rgrp header in fs blocks */
	__u32 __pad;

	__be64 ri_data0;	/* first data location */
	__be32 ri_data;	/* num of data blocks in rgrp */

	__be32 ri_bitbytes;	/* number of bytes in data bitmaps */

	__u8 ri_reserved[64];
};

struct gfs2_rindex_host {
	__u64 ri_addr;	/* grp block disk address */
	__u64 ri_data0;	/* first data location */
	__u32 ri_length;	/* length of rgrp header in fs blocks */
	__u32 ri_data;	/* num of data blocks in rgrp */
	__u32 ri_bitbytes;	/* number of bytes in data bitmaps */
};

/*
 * resource group header structure
 */

/* Number of blocks per byte in rgrp */
#define GFS2_NBBY		4
#define GFS2_BIT_SIZE		2
#define GFS2_BIT_MASK		0x00000003

#define GFS2_BLKST_FREE		0
#define GFS2_BLKST_USED		1
#define GFS2_BLKST_UNLINKED	2
#define GFS2_BLKST_DINODE	3

#define GFS2_RGF_JOURNAL	0x00000001
#define GFS2_RGF_METAONLY	0x00000002
#define GFS2_RGF_DATAONLY	0x00000004
#define GFS2_RGF_NOALLOC	0x00000008

struct gfs2_rgrp {
	struct gfs2_meta_header rg_header;

	__be32 rg_flags;
	__be32 rg_free;
	__be32 rg_dinodes;
	__be32 __pad;
	__be64 rg_igeneration;

	__u8 rg_reserved[80]; /* Several fields from gfs1 now reserved */
};

struct gfs2_rgrp_host {
	__u32 rg_flags;
	__u32 rg_free;
	__u32 rg_dinodes;
	__u64 rg_igeneration;
};

/*
 * quota structure
 */

struct gfs2_quota {
	__be64 qu_limit;
	__be64 qu_warn;
	__be64 qu_value;
	__u8 qu_reserved[64];
};

struct gfs2_quota_host {
	__u64 qu_limit;
	__u64 qu_warn;
	__u64 qu_value;
};

/*
 * dinode structure
 */

#define GFS2_MAX_META_HEIGHT	10
#define GFS2_DIR_MAX_DEPTH	17

#define DT2IF(dt) (((dt) << 12) & S_IFMT)
#define IF2DT(sif) (((sif) & S_IFMT) >> 12)

enum {
	gfs2fl_Jdata		= 0,
	gfs2fl_ExHash		= 1,
	gfs2fl_Unused		= 2,
	gfs2fl_EaIndirect	= 3,
	gfs2fl_Directio		= 4,
	gfs2fl_Immutable	= 5,
	gfs2fl_AppendOnly	= 6,
	gfs2fl_NoAtime		= 7,
	gfs2fl_Sync		= 8,
	gfs2fl_System		= 9,
	gfs2fl_TruncInProg	= 29,
	gfs2fl_InheritDirectio	= 30,
	gfs2fl_InheritJdata	= 31,
};

/* Dinode flags */
#define GFS2_DIF_JDATA			0x00000001
#define GFS2_DIF_EXHASH			0x00000002
#define GFS2_DIF_UNUSED			0x00000004  /* only in gfs1 */
#define GFS2_DIF_EA_INDIRECT		0x00000008
#define GFS2_DIF_DIRECTIO		0x00000010
#define GFS2_DIF_IMMUTABLE		0x00000020
#define GFS2_DIF_APPENDONLY		0x00000040
#define GFS2_DIF_NOATIME		0x00000080
#define GFS2_DIF_SYNC			0x00000100
#define GFS2_DIF_SYSTEM			0x00000200 /* New in gfs2 */
#define GFS2_DIF_TRUNC_IN_PROG		0x20000000 /* New in gfs2 */
#define GFS2_DIF_INHERIT_DIRECTIO	0x40000000
#define GFS2_DIF_INHERIT_JDATA		0x80000000

struct gfs2_dinode {
	struct gfs2_meta_header di_header;

	struct gfs2_inum di_num;

	__be32 di_mode;	/* mode of file */
	__be32 di_uid;	/* owner's user id */
	__be32 di_gid;	/* owner's group id */
	__be32 di_nlink;	/* number of links to this file */
	__be64 di_size;	/* number of bytes in file */
	__be64 di_blocks;	/* number of blocks in file */
	__be64 di_atime;	/* time last accessed */
	__be64 di_mtime;	/* time last modified */
	__be64 di_ctime;	/* time last changed */
	__be32 di_major;	/* device major number */
	__be32 di_minor;	/* device minor number */

	/* This section varies from gfs1. Padding added to align with
         * remainder of dinode
	 */
	__be64 di_goal_meta;	/* rgrp to alloc from next */
	__be64 di_goal_data;	/* data block goal */
	__be64 di_generation;	/* generation number for NFS */

	__be32 di_flags;	/* GFS2_DIF_... */
	__be32 di_payload_format;  /* GFS2_FORMAT_... */
	__u16 __pad1;	/* Was ditype in gfs1 */
	__be16 di_height;	/* height of metadata */
	__u32 __pad2;	/* Unused incarnation number from gfs1 */

	/* These only apply to directories  */
	__u16 __pad3;	/* Padding */
	__be16 di_depth;	/* Number of bits in the table */
	__be32 di_entries;	/* The number of entries in the directory */

	struct gfs2_inum __pad4; /* Unused even in current gfs1 */

	__be64 di_eattr;	/* extended attribute block number */

	__u8 di_reserved[56];
};

struct gfs2_dinode_host {
	__u64 di_size;	/* number of bytes in file */
	__u64 di_blocks;	/* number of blocks in file */

	/* This section varies from gfs1. Padding added to align with
         * remainder of dinode
	 */
	__u64 di_goal_meta;	/* rgrp to alloc from next */
	__u64 di_goal_data;	/* data block goal */
	__u64 di_generation;	/* generation number for NFS */

	__u32 di_flags;	/* GFS2_DIF_... */
	__u16 di_height;	/* height of metadata */

	/* These only apply to directories  */
	__u16 di_depth;	/* Number of bits in the table */
	__u32 di_entries;	/* The number of entries in the directory */

	__u64 di_eattr;	/* extended attribute block number */
};

/*
 * directory structure - many of these per directory file
 */

#define GFS2_FNAMESIZE		255
#define GFS2_DIRENT_SIZE(name_len) ((sizeof(struct gfs2_dirent) + (name_len) + 7) & ~7)

struct gfs2_dirent {
	struct gfs2_inum de_inum;
	__be32 de_hash;
	__be16 de_rec_len;
	__be16 de_name_len;
	__be16 de_type;
	__u8 __pad[14];
};

/*
 * Header of leaf directory nodes
 */

struct gfs2_leaf {
	struct gfs2_meta_header lf_header;

	__be16 lf_depth;		/* Depth of leaf */
	__be16 lf_entries;		/* Number of dirents in leaf */
	__be32 lf_dirent_format;	/* Format of the dirents */
	__be64 lf_next;			/* Next leaf, if overflow */

	__u8 lf_reserved[64];
};

/*
 * Extended attribute header format
 */

#define GFS2_EA_MAX_NAME_LEN	255
#define GFS2_EA_MAX_DATA_LEN	65536

#define GFS2_EATYPE_UNUSED	0
#define GFS2_EATYPE_USR		1
#define GFS2_EATYPE_SYS		2
#define GFS2_EATYPE_SECURITY	3

#define GFS2_EATYPE_LAST	3
#define GFS2_EATYPE_VALID(x)	((x) <= GFS2_EATYPE_LAST)

#define GFS2_EAFLAG_LAST	0x01	/* last ea in block */

struct gfs2_ea_header {
	__be32 ea_rec_len;
	__be32 ea_data_len;
	__u8 ea_name_len;	/* no NULL pointer after the string */
	__u8 ea_type;		/* GFS2_EATYPE_... */
	__u8 ea_flags;		/* GFS2_EAFLAG_... */
	__u8 ea_num_ptrs;
	__u32 __pad;
};

/*
 * Log header structure
 */

#define GFS2_LOG_HEAD_UNMOUNT	0x00000001	/* log is clean */

struct gfs2_log_header {
	struct gfs2_meta_header lh_header;

	__be64 lh_sequence;	/* Sequence number of this transaction */
	__be32 lh_flags;	/* GFS2_LOG_HEAD_... */
	__be32 lh_tail;		/* Block number of log tail */
	__be32 lh_blkno;
	__be32 lh_hash;
};

struct gfs2_log_header_host {
	struct gfs2_meta_header_host lh_header;

	__u64 lh_sequence;	/* Sequence number of this transaction */
	__u32 lh_flags;	/* GFS2_LOG_HEAD_... */
	__u32 lh_tail;		/* Block number of log tail */
	__u32 lh_blkno;
	__u32 lh_hash;
};

/*
 * Log type descriptor
 */

#define GFS2_LOG_DESC_METADATA	300
/* ld_data1 is the number of metadata blocks in the descriptor.
   ld_data2 is unused. */

#define GFS2_LOG_DESC_REVOKE	301
/* ld_data1 is the number of revoke blocks in the descriptor.
   ld_data2 is unused. */

#define GFS2_LOG_DESC_JDATA	302
/* ld_data1 is the number of data blocks in the descriptor.
   ld_data2 is unused. */

struct gfs2_log_descriptor {
	struct gfs2_meta_header ld_header;

	__be32 ld_type;		/* GFS2_LOG_DESC_... */
	__be32 ld_length;	/* Number of buffers in this chunk */
	__be32 ld_data1;	/* descriptor-specific field */
	__be32 ld_data2;	/* descriptor-specific field */

	__u8 ld_reserved[32];
};

/*
 * Inum Range
 * Describe a range of formal inode numbers allocated to
 * one machine to assign to inodes.
 */

#define GFS2_INUM_QUANTUM	1048576

struct gfs2_inum_range {
	__be64 ir_start;
	__be64 ir_length;
};

struct gfs2_inum_range_host {
	__u64 ir_start;
	__u64 ir_length;
};

/*
 * Statfs change
 * Describes an change to the pool of free and allocated
 * blocks.
 */

struct gfs2_statfs_change {
	__be64 sc_total;
	__be64 sc_free;
	__be64 sc_dinodes;
};

struct gfs2_statfs_change_host {
	__u64 sc_total;
	__u64 sc_free;
	__u64 sc_dinodes;
};

/*
 * Quota change
 * Describes an allocation change for a particular
 * user or group.
 */

#define GFS2_QCF_USER		0x00000001

struct gfs2_quota_change {
	__be64 qc_change;
	__be32 qc_flags;	/* GFS2_QCF_... */
	__be32 qc_id;
};

struct gfs2_quota_change_host {
	__u64 qc_change;
	__u32 qc_flags;	/* GFS2_QCF_... */
	__u32 qc_id;
};

#ifdef __KERNEL__
/* Translation functions */

extern void gfs2_inum_in(struct gfs2_inum_host *no, const void *buf);
extern void gfs2_inum_out(const struct gfs2_inum_host *no, void *buf);
extern void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf);
extern void gfs2_rindex_in(struct gfs2_rindex_host *ri, const void *buf);
extern void gfs2_rindex_out(const struct gfs2_rindex_host *ri, void *buf);
extern void gfs2_rgrp_in(struct gfs2_rgrp_host *rg, const void *buf);
extern void gfs2_rgrp_out(const struct gfs2_rgrp_host *rg, void *buf);
extern void gfs2_quota_in(struct gfs2_quota_host *qu, const void *buf);
struct gfs2_inode;
extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
extern void gfs2_ea_header_in(struct gfs2_ea_header *ea, const void *buf);
extern void gfs2_ea_header_out(const struct gfs2_ea_header *ea, void *buf);
extern void gfs2_log_header_in(struct gfs2_log_header_host *lh, const void *buf);
extern void gfs2_inum_range_in(struct gfs2_inum_range_host *ir, const void *buf);
extern void gfs2_inum_range_out(const struct gfs2_inum_range_host *ir, void *buf);
extern void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc, const void *buf);
extern void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf);
extern void gfs2_quota_change_in(struct gfs2_quota_change_host *qc, const void *buf);

/* Printing functions */

extern void gfs2_rindex_print(const struct gfs2_rindex_host *ri);
extern void gfs2_dinode_print(const struct gfs2_inode *ip);

#endif /* __KERNEL__ */

#endif /* __GFS2_ONDISK_DOT_H__ */
Commit	Line	Data
b3b94faa	1	/*
feaa7bba SW	2	* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
	3	* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
	4	*
	5	* This copyrighted material is made available to anyone wishing to use,
	6	* modify, copy, or redistribute it subject to the terms and conditions
	7	* of the GNU General Public License v.2.
	8	*/
b3b94faa DT	9
	10	#ifndef __GFS2_ONDISK_DOT_H__
	11	#define __GFS2_ONDISK_DOT_H__
	12
	13	#define GFS2_MAGIC 0x01161970
	14	#define GFS2_BASIC_BLOCK 512
	15	#define GFS2_BASIC_BLOCK_SHIFT 9
	16
	17	/* Lock numbers of the LM_TYPE_NONDISK type */
	18
	19	#define GFS2_MOUNT_LOCK 0
	20	#define GFS2_LIVE_LOCK 1
	21	#define GFS2_TRANS_LOCK 2
	22	#define GFS2_RENAME_LOCK 3
	23
	24	/* Format numbers for various metadata types */
	25
	26	#define GFS2_FORMAT_NONE 0
	27	#define GFS2_FORMAT_SB 100
	28	#define GFS2_FORMAT_RG 200
	29	#define GFS2_FORMAT_RB 300
	30	#define GFS2_FORMAT_DI 400
	31	#define GFS2_FORMAT_IN 500
	32	#define GFS2_FORMAT_LF 600
	33	#define GFS2_FORMAT_JD 700
	34	#define GFS2_FORMAT_LH 800
	35	#define GFS2_FORMAT_LD 900
	36	#define GFS2_FORMAT_LB 1000
fc69d0d3 SW	37	#define GFS2_FORMAT_EA 1600
fc69d0d3 SW	38	#define GFS2_FORMAT_ED 1700
b3b94faa DT	39	#define GFS2_FORMAT_QC 1400
b3b94faa DT	40	/* These are format numbers for entities contained in files */
fc69d0d3 SW	41	#define GFS2_FORMAT_RI 1100
	42	#define GFS2_FORMAT_DE 1200
	43	#define GFS2_FORMAT_QU 1500
b3b94faa DT	44	/* These are part of the superblock */
	45	#define GFS2_FORMAT_FS 1801
	46	#define GFS2_FORMAT_MULTI 1900
	47
	48	/*
	49	* An on-disk inode number
	50	*/
	51
b3b94faa DT	52	struct gfs2_inum {
	53	__be64 no_formal_ino;
	54	__be64 no_addr;
	55	};
	56
629a21e7 AV	57	struct gfs2_inum_host {
	58	__u64 no_formal_ino;
	59	__u64 no_addr;
	60	};
	61
	62	static inline int gfs2_inum_equal(const struct gfs2_inum_host *ino1,
	63	const struct gfs2_inum_host *ino2)
5c676f6d SW	64	{
	65	return ino1->no_formal_ino == ino2->no_formal_ino &&
	66	ino1->no_addr == ino2->no_addr;
	67	}
	68
b3b94faa DT	69	/*
	70	* Generic metadata head structure
	71	* Every inplace buffer logged in the journal must start with this.
	72	*/
	73
	74	#define GFS2_METATYPE_NONE 0
	75	#define GFS2_METATYPE_SB 1
	76	#define GFS2_METATYPE_RG 2
	77	#define GFS2_METATYPE_RB 3
	78	#define GFS2_METATYPE_DI 4
	79	#define GFS2_METATYPE_IN 5
	80	#define GFS2_METATYPE_LF 6
	81	#define GFS2_METATYPE_JD 7
	82	#define GFS2_METATYPE_LH 8
	83	#define GFS2_METATYPE_LD 9
fc69d0d3 SW	84	#define GFS2_METATYPE_LB 12
	85	#define GFS2_METATYPE_EA 10
	86	#define GFS2_METATYPE_ED 11
b3b94faa DT	87	#define GFS2_METATYPE_QC 14
	88
	89	struct gfs2_meta_header {
	90	__be32 mh_magic;
	91	__be32 mh_type;
	92	__be64 __pad0; /* Was generation number in gfs1 */
	93	__be32 mh_format;
	94	__be32 __pad1; /* Was incarnation number in gfs1 */
	95	};
	96
e928a76f AV	97	struct gfs2_meta_header_host {
	98	__u32 mh_magic;
	99	__u32 mh_type;
	100	__u32 mh_format;
	101	};
	102
b3b94faa DT	103	/*
	104	* super-block structure
	105	*
	106	* It's probably good if SIZEOF_SB <= GFS2_BASIC_BLOCK (512 bytes)
	107	*
	108	* Order is important, need to be able to read old superblocks to do on-disk
	109	* version upgrades.
	110	*/
	111
	112	/* Address of superblock in GFS2 basic blocks */
	113	#define GFS2_SB_ADDR 128
	114
	115	/* The lock number for the superblock (must be zero) */
	116	#define GFS2_SB_LOCK 0
	117
	118	/* Requirement: GFS2_LOCKNAME_LEN % 8 == 0
	119	Includes: the fencing zero at the end */
	120	#define GFS2_LOCKNAME_LEN 64
	121
	122	struct gfs2_sb {
	123	struct gfs2_meta_header sb_header;
	124
	125	__be32 sb_fs_format;
	126	__be32 sb_multihost_format;
	127	__u32 __pad0; /* Was superblock flags in gfs1 */
	128
	129	__be32 sb_bsize;
	130	__be32 sb_bsize_shift;
	131	__u32 __pad1; /* Was journal segment size in gfs1 */
	132
	133	struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */
	134	struct gfs2_inum __pad2; /* Was rindex dinode in gfs1 */
	135	struct gfs2_inum sb_root_dir;
	136
	137	char sb_lockproto[GFS2_LOCKNAME_LEN];
	138	char sb_locktable[GFS2_LOCKNAME_LEN];
	139	/* In gfs1, quota and license dinodes followed */
	140	};
	141
f50dfaf7	142	struct gfs2_sb_host {
e928a76f	143	struct gfs2_meta_header_host sb_header;
f50dfaf7	144
bc558c87 AV	145	__u32 sb_fs_format;
bc558c87 AV	146	__u32 sb_multihost_format;
f50dfaf7	147
bc558c87 AV	148	__u32 sb_bsize;
bc558c87 AV	149	__u32 sb_bsize_shift;
f50dfaf7	150
629a21e7 AV	151	struct gfs2_inum_host sb_master_dir; /* Was jindex dinode in gfs1 */
629a21e7 AV	152	struct gfs2_inum_host sb_root_dir;
f50dfaf7 AV	153
	154	char sb_lockproto[GFS2_LOCKNAME_LEN];
	155	char sb_locktable[GFS2_LOCKNAME_LEN];
	156	/* In gfs1, quota and license dinodes followed */
	157	};
	158
b3b94faa DT	159	/*
	160	* resource index structure
	161	*/
	162
	163	struct gfs2_rindex {
	164	__be64 ri_addr; /* grp block disk address */
	165	__be32 ri_length; /* length of rgrp header in fs blocks */
	166	__u32 __pad;
	167
	168	__be64 ri_data0; /* first data location */
	169	__be32 ri_data; /* num of data blocks in rgrp */
	170
	171	__be32 ri_bitbytes; /* number of bytes in data bitmaps */
	172
	173	__u8 ri_reserved[64];
	174	};
	175
1e81c4c3 AV	176	struct gfs2_rindex_host {
	177	__u64 ri_addr; /* grp block disk address */
	178	__u64 ri_data0; /* first data location */
	179	__u32 ri_length; /* length of rgrp header in fs blocks */
	180	__u32 ri_data; /* num of data blocks in rgrp */
	181	__u32 ri_bitbytes; /* number of bytes in data bitmaps */
	182	};
	183
b3b94faa DT	184	/*
	185	* resource group header structure
	186	*/
	187
	188	/* Number of blocks per byte in rgrp */
	189	#define GFS2_NBBY 4
	190	#define GFS2_BIT_SIZE 2
	191	#define GFS2_BIT_MASK 0x00000003
	192
	193	#define GFS2_BLKST_FREE 0
	194	#define GFS2_BLKST_USED 1
feaa7bba	195	#define GFS2_BLKST_UNLINKED 2
b3b94faa DT	196	#define GFS2_BLKST_DINODE 3
	197
	198	#define GFS2_RGF_JOURNAL 0x00000001
	199	#define GFS2_RGF_METAONLY 0x00000002
	200	#define GFS2_RGF_DATAONLY 0x00000004
	201	#define GFS2_RGF_NOALLOC 0x00000008
	202
	203	struct gfs2_rgrp {
	204	struct gfs2_meta_header rg_header;
	205
	206	__be32 rg_flags;
	207	__be32 rg_free;
	208	__be32 rg_dinodes;
4340fe62 SW	209	__be32 __pad;
4340fe62 SW	210	__be64 rg_igeneration;
b3b94faa	211
4340fe62	212	__u8 rg_reserved[80]; /* Several fields from gfs1 now reserved */
b3b94faa DT	213	};
b3b94faa DT	214
68826664	215	struct gfs2_rgrp_host {
68826664 AV	216	__u32 rg_flags;
	217	__u32 rg_free;
	218	__u32 rg_dinodes;
	219	__u64 rg_igeneration;
	220	};
	221
b3b94faa DT	222	/*
	223	* quota structure
	224	*/
	225
	226	struct gfs2_quota {
	227	__be64 qu_limit;
	228	__be64 qu_warn;
	229	__be64 qu_value;
fc69d0d3	230	__u8 qu_reserved[64];
b3b94faa DT	231	};
b3b94faa DT	232
b5bc9e8b AV	233	struct gfs2_quota_host {
	234	__u64 qu_limit;
	235	__u64 qu_warn;
	236	__u64 qu_value;
	237	};
	238
b3b94faa DT	239	/*
	240	* dinode structure
	241	*/
	242
	243	#define GFS2_MAX_META_HEIGHT 10
	244	#define GFS2_DIR_MAX_DEPTH 17
	245
	246	#define DT2IF(dt) (((dt) << 12) & S_IFMT)
	247	#define IF2DT(sif) (((sif) & S_IFMT) >> 12)
	248
7ea9ea83 SW	249	enum {
	250	gfs2fl_Jdata = 0,
	251	gfs2fl_ExHash = 1,
	252	gfs2fl_Unused = 2,
	253	gfs2fl_EaIndirect = 3,
	254	gfs2fl_Directio = 4,
	255	gfs2fl_Immutable = 5,
	256	gfs2fl_AppendOnly = 6,
	257	gfs2fl_NoAtime = 7,
	258	gfs2fl_Sync = 8,
	259	gfs2fl_System = 9,
	260	gfs2fl_TruncInProg = 29,
	261	gfs2fl_InheritDirectio = 30,
	262	gfs2fl_InheritJdata = 31,
	263	};
	264
b3b94faa DT	265	/* Dinode flags */
	266	#define GFS2_DIF_JDATA 0x00000001
	267	#define GFS2_DIF_EXHASH 0x00000002
	268	#define GFS2_DIF_UNUSED 0x00000004 /* only in gfs1 */
	269	#define GFS2_DIF_EA_INDIRECT 0x00000008
	270	#define GFS2_DIF_DIRECTIO 0x00000010
	271	#define GFS2_DIF_IMMUTABLE 0x00000020
	272	#define GFS2_DIF_APPENDONLY 0x00000040
	273	#define GFS2_DIF_NOATIME 0x00000080
	274	#define GFS2_DIF_SYNC 0x00000100
	275	#define GFS2_DIF_SYSTEM 0x00000200 /* New in gfs2 */
	276	#define GFS2_DIF_TRUNC_IN_PROG 0x20000000 /* New in gfs2 */
	277	#define GFS2_DIF_INHERIT_DIRECTIO 0x40000000
	278	#define GFS2_DIF_INHERIT_JDATA 0x80000000
	279
	280	struct gfs2_dinode {
	281	struct gfs2_meta_header di_header;
	282
	283	struct gfs2_inum di_num;
	284
	285	__be32 di_mode; /* mode of file */
	286	__be32 di_uid; /* owner's user id */
	287	__be32 di_gid; /* owner's group id */
	288	__be32 di_nlink; /* number of links to this file */
	289	__be64 di_size; /* number of bytes in file */
	290	__be64 di_blocks; /* number of blocks in file */
	291	__be64 di_atime; /* time last accessed */
	292	__be64 di_mtime; /* time last modified */
	293	__be64 di_ctime; /* time last changed */
	294	__be32 di_major; /* device major number */
	295	__be32 di_minor; /* device minor number */
	296
	297	/* This section varies from gfs1. Padding added to align with
	298	* remainder of dinode
	299	*/
	300	__be64 di_goal_meta; /* rgrp to alloc from next */
	301	__be64 di_goal_data; /* data block goal */
4340fe62	302	__be64 di_generation; /* generation number for NFS */
b3b94faa DT	303
	304	__be32 di_flags; /* GFS2_DIF_... */
	305	__be32 di_payload_format; /* GFS2_FORMAT_... */
	306	__u16 __pad1; /* Was ditype in gfs1 */
	307	__be16 di_height; /* height of metadata */
	308	__u32 __pad2; /* Unused incarnation number from gfs1 */
	309
	310	/* These only apply to directories */
	311	__u16 __pad3; /* Padding */
	312	__be16 di_depth; /* Number of bits in the table */
	313	__be32 di_entries; /* The number of entries in the directory */
	314
	315	struct gfs2_inum __pad4; /* Unused even in current gfs1 */
	316
	317	__be64 di_eattr; /* extended attribute block number */
	318
	319	__u8 di_reserved[56];
	320	};
	321
3ca68df6	322	struct gfs2_dinode_host {
5c6edb57 AV	323	__u64 di_size; /* number of bytes in file */
5c6edb57 AV	324	__u64 di_blocks; /* number of blocks in file */
3ca68df6 AV	325
	326	/* This section varies from gfs1. Padding added to align with
	327	* remainder of dinode
	328	*/
5c6edb57 AV	329	__u64 di_goal_meta; /* rgrp to alloc from next */
	330	__u64 di_goal_data; /* data block goal */
	331	__u64 di_generation; /* generation number for NFS */
3ca68df6	332
5c6edb57	333	__u32 di_flags; /* GFS2_DIF_... */
5c6edb57	334	__u16 di_height; /* height of metadata */
3ca68df6 AV	335
3ca68df6 AV	336	/* These only apply to directories */
5c6edb57 AV	337	__u16 di_depth; /* Number of bits in the table */
5c6edb57 AV	338	__u32 di_entries; /* The number of entries in the directory */
3ca68df6	339
5c6edb57	340	__u64 di_eattr; /* extended attribute block number */
3ca68df6 AV	341	};
3ca68df6 AV	342
b3b94faa DT	343	/*
	344	* directory structure - many of these per directory file
	345	*/
	346
	347	#define GFS2_FNAMESIZE 255
	348	#define GFS2_DIRENT_SIZE(name_len) ((sizeof(struct gfs2_dirent) + (name_len) + 7) & ~7)
	349
	350	struct gfs2_dirent {
	351	struct gfs2_inum de_inum;
	352	__be32 de_hash;
fc69d0d3 SW	353	__be16 de_rec_len;
	354	__be16 de_name_len;
	355	__be16 de_type;
	356	__u8 __pad[14];
b3b94faa DT	357	};
	358
	359	/*
	360	* Header of leaf directory nodes
	361	*/
	362
	363	struct gfs2_leaf {
	364	struct gfs2_meta_header lf_header;
	365
	366	__be16 lf_depth; /* Depth of leaf */
	367	__be16 lf_entries; /* Number of dirents in leaf */
	368	__be32 lf_dirent_format; /* Format of the dirents */
	369	__be64 lf_next; /* Next leaf, if overflow */
	370
fc69d0d3	371	__u8 lf_reserved[64];
b3b94faa DT	372	};
	373
	374	/*
	375	* Extended attribute header format
	376	*/
	377
	378	#define GFS2_EA_MAX_NAME_LEN 255
	379	#define GFS2_EA_MAX_DATA_LEN 65536
	380
	381	#define GFS2_EATYPE_UNUSED 0
	382	#define GFS2_EATYPE_USR 1
	383	#define GFS2_EATYPE_SYS 2
639b6d79	384	#define GFS2_EATYPE_SECURITY 3
b3b94faa	385
639b6d79	386	#define GFS2_EATYPE_LAST 3
b3b94faa DT	387	#define GFS2_EATYPE_VALID(x) ((x) <= GFS2_EATYPE_LAST)
	388
	389	#define GFS2_EAFLAG_LAST 0x01 /* last ea in block */
	390
	391	struct gfs2_ea_header {
	392	__be32 ea_rec_len;
	393	__be32 ea_data_len;
	394	__u8 ea_name_len; /* no NULL pointer after the string */
	395	__u8 ea_type; /* GFS2_EATYPE_... */
	396	__u8 ea_flags; /* GFS2_EAFLAG_... */
	397	__u8 ea_num_ptrs;
	398	__u32 __pad;
	399	};
	400
	401	/*
	402	* Log header structure
	403	*/
	404
	405	#define GFS2_LOG_HEAD_UNMOUNT 0x00000001 /* log is clean */
	406
	407	struct gfs2_log_header {
	408	struct gfs2_meta_header lh_header;
	409
	410	__be64 lh_sequence; /* Sequence number of this transaction */
	411	__be32 lh_flags; /* GFS2_LOG_HEAD_... */
	412	__be32 lh_tail; /* Block number of log tail */
	413	__be32 lh_blkno;
	414	__be32 lh_hash;
	415	};
	416
55167622	417	struct gfs2_log_header_host {
e928a76f	418	struct gfs2_meta_header_host lh_header;
55167622 AV	419
	420	__u64 lh_sequence; /* Sequence number of this transaction */
	421	__u32 lh_flags; /* GFS2_LOG_HEAD_... */
	422	__u32 lh_tail; /* Block number of log tail */
	423	__u32 lh_blkno;
	424	__u32 lh_hash;
	425	};
	426
b3b94faa DT	427	/*
	428	* Log type descriptor
	429	*/
	430
	431	#define GFS2_LOG_DESC_METADATA 300
	432	/* ld_data1 is the number of metadata blocks in the descriptor.
	433	ld_data2 is unused. */
	434
	435	#define GFS2_LOG_DESC_REVOKE 301
	436	/* ld_data1 is the number of revoke blocks in the descriptor.
	437	ld_data2 is unused. */
	438
18ec7d5c SW	439	#define GFS2_LOG_DESC_JDATA 302
	440	/* ld_data1 is the number of data blocks in the descriptor.
	441	ld_data2 is unused. */
	442
b3b94faa DT	443	struct gfs2_log_descriptor {
	444	struct gfs2_meta_header ld_header;
	445
	446	__be32 ld_type; /* GFS2_LOG_DESC_... */
	447	__be32 ld_length; /* Number of buffers in this chunk */
	448	__be32 ld_data1; /* descriptor-specific field */
	449	__be32 ld_data2; /* descriptor-specific field */
	450
	451	__u8 ld_reserved[32];
	452	};
	453
	454	/*
	455	* Inum Range
	456	* Describe a range of formal inode numbers allocated to
	457	* one machine to assign to inodes.
	458	*/
	459
	460	#define GFS2_INUM_QUANTUM 1048576
	461
	462	struct gfs2_inum_range {
	463	__be64 ir_start;
	464	__be64 ir_length;
	465	};
	466
e6972647 AV	467	struct gfs2_inum_range_host {
	468	__u64 ir_start;
	469	__u64 ir_length;
	470	};
	471
b3b94faa DT	472	/*
	473	* Statfs change
	474	* Describes an change to the pool of free and allocated
	475	* blocks.
	476	*/
	477
	478	struct gfs2_statfs_change {
	479	__be64 sc_total;
	480	__be64 sc_free;
	481	__be64 sc_dinodes;
	482	};
	483
bd209cc0 AV	484	struct gfs2_statfs_change_host {
	485	__u64 sc_total;
	486	__u64 sc_free;
	487	__u64 sc_dinodes;
	488	};
	489
b3b94faa DT	490	/*
	491	* Quota change
	492	* Describes an allocation change for a particular
	493	* user or group.
	494	*/
	495
	496	#define GFS2_QCF_USER 0x00000001
	497
	498	struct gfs2_quota_change {
	499	__be64 qc_change;
	500	__be32 qc_flags; /* GFS2_QCF_... */
	501	__be32 qc_id;
	502	};
	503
b62f963e AV	504	struct gfs2_quota_change_host {
	505	__u64 qc_change;
	506	__u32 qc_flags; /* GFS2_QCF_... */
	507	__u32 qc_id;
	508	};
	509
18ec7d5c	510	#ifdef __KERNEL__
b3b94faa DT	511	/* Translation functions */
b3b94faa DT	512
629a21e7 AV	513	extern void gfs2_inum_in(struct gfs2_inum_host no, const void buf);
629a21e7 AV	514	extern void gfs2_inum_out(const struct gfs2_inum_host no, void buf);
f50dfaf7	515	extern void gfs2_sb_in(struct gfs2_sb_host sb, const void buf);
1e81c4c3 AV	516	extern void gfs2_rindex_in(struct gfs2_rindex_host ri, const void buf);
1e81c4c3 AV	517	extern void gfs2_rindex_out(const struct gfs2_rindex_host ri, void buf);
68826664 AV	518	extern void gfs2_rgrp_in(struct gfs2_rgrp_host rg, const void buf);
68826664 AV	519	extern void gfs2_rgrp_out(const struct gfs2_rgrp_host rg, void buf);
b5bc9e8b	520	extern void gfs2_quota_in(struct gfs2_quota_host qu, const void buf);
539e5d6b SW	521	struct gfs2_inode;
539e5d6b SW	522	extern void gfs2_dinode_out(const struct gfs2_inode ip, void buf);
38c60ef2 SW	523	extern void gfs2_ea_header_in(struct gfs2_ea_header ea, const void buf);
38c60ef2 SW	524	extern void gfs2_ea_header_out(const struct gfs2_ea_header ea, void buf);
55167622	525	extern void gfs2_log_header_in(struct gfs2_log_header_host lh, const void buf);
e6972647 AV	526	extern void gfs2_inum_range_in(struct gfs2_inum_range_host ir, const void buf);
e6972647 AV	527	extern void gfs2_inum_range_out(const struct gfs2_inum_range_host ir, void buf);
bd209cc0 AV	528	extern void gfs2_statfs_change_in(struct gfs2_statfs_change_host sc, const void buf);
bd209cc0 AV	529	extern void gfs2_statfs_change_out(const struct gfs2_statfs_change_host sc, void buf);
b62f963e	530	extern void gfs2_quota_change_in(struct gfs2_quota_change_host qc, const void buf);
b3b94faa DT	531
	532	/* Printing functions */
	533
1e81c4c3	534	extern void gfs2_rindex_print(const struct gfs2_rindex_host *ri);
4cc14f0b	535	extern void gfs2_dinode_print(const struct gfs2_inode *ip);
b3b94faa	536
18ec7d5c SW	537	#endif /* __KERNEL__ */
18ec7d5c SW	538
b3b94faa	539	#endif /* __GFS2_ONDISK_DOT_H__ */