Restoring authorship annotation for <orivej@yandex-team.ru>. Commit 1 of 2.

1 files changed, 535 insertions, 535 deletions

diff --git a/contrib/libs/linux-headers/linux/gfs2_ondisk.h b/contrib/libs/linux-headers/linux/gfs2_ondisk.h
index e24bf43649..07b8d8f29e 100644
--- a/contrib/libs/linux-headers/linux/gfs2_ondisk.h
+++ b/contrib/libs/linux-headers/linux/gfs2_ondisk.h
@@ -1,535 +1,535 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/*
- * 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__
-
-#include <linux/types.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_FREEZE_LOCK	2
-#define GFS2_RENAME_LOCK	3
-#define GFS2_CONTROL_LOCK	4
-#define GFS2_MOUNTED_LOCK	5
-
-/* 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;
-};
-
-/*
- * 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;
-	/* This union is to keep userspace happy */
-	union {
-		__be32 mh_jid;		/* Was incarnation number in gfs1 */
-		__be32 __pad1;
-	};
-};
-
-/*
- * 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];
-
-	struct gfs2_inum __pad3; /* Was quota inode in gfs1 */
-	struct gfs2_inum __pad4; /* Was licence inode in gfs1 */
-#define GFS2_HAS_UUID 1
-	__u8 sb_uuid[16]; /* The UUID, maybe 0 for backwards compat */
-};
-
-/*
- * 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];
-};
-
-/*
- * 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
-#define GFS2_RGF_TRIMMED	0x00000010
-
-struct gfs2_rgrp_lvb {
-	__be32 rl_magic;
-	__be32 rl_flags;
-	__be32 rl_free;
-	__be32 rl_dinodes;
-	__be64 rl_igeneration;
-	__be32 rl_unlinked;
-	__be32 __pad;
-};
-
-struct gfs2_rgrp {
-	struct gfs2_meta_header rg_header;
-
-	__be32 rg_flags;
-	__be32 rg_free;
-	__be32 rg_dinodes;
-	union {
-		__be32 __pad;
-		__be32 rg_skip; /* Distance to the next rgrp in fs blocks */
-	};
-	__be64 rg_igeneration;
-	/* The following 3 fields are duplicated from gfs2_rindex to reduce
-	   reliance on the rindex */
-	__be64 rg_data0;     /* First data location */
-	__be32 rg_data;      /* Number of data blocks in rgrp */
-	__be32 rg_bitbytes;  /* Number of bytes in data bitmaps */
-	__be32 rg_crc;       /* crc32 of the structure with this field 0 */
-
-	__u8 rg_reserved[60]; /* Several fields from gfs1 now reserved */
-};
-
-/*
- * quota structure
- */
-
-struct gfs2_quota {
-	__be64 qu_limit;
-	__be64 qu_warn;
-	__be64 qu_value;
-	__u8 qu_reserved[64];
-};
-
-/*
- * 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_TopLevel		= 10,
-	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_TOPDIR			0x00000400 /* New in gfs2 */
-#define GFS2_DIF_TRUNC_IN_PROG		0x20000000 /* New in gfs2 */
-#define GFS2_DIF_INHERIT_DIRECTIO	0x40000000 /* only in gfs1 */
-#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 */
-	__be32 di_atime_nsec;   /* nsec portion of atime */
-	__be32 di_mtime_nsec;   /* nsec portion of mtime */
-	__be32 di_ctime_nsec;   /* nsec portion of ctime */
-
-	__u8 di_reserved[44];
-};
-
-/*
- * 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)
-#define GFS2_MIN_DIRENT_SIZE (GFS2_DIRENT_SIZE(1))
-
-
-struct gfs2_dirent {
-	struct gfs2_inum de_inum;
-	__be32 de_hash;
-	__be16 de_rec_len;
-	__be16 de_name_len;
-	__be16 de_type;
-	__be16 de_rahead;
-	union {
-		__u8 __pad[12];
-		struct {
-			__u32 de_cookie; /* ondisk value not used */
-			__u8 pad3[8];
-		};
-	};
-};
-
-/*
- * 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 */
-
-	union {
-		__u8 lf_reserved[64];
-		struct {
-			__be64 lf_inode;	/* Dir inode number */
-			__be32 lf_dist;		/* Dist from inode on chain */
-			__be32 lf_nsec;		/* Last ins/del usecs */
-			__be64 lf_sec;		/* Last ins/del in secs */
-			__u8 lf_reserved2[40];
-		};
-	};
-};
-
-/*
- * Extended attribute header format
- *
- * This works in a similar way to dirents. There is a fixed size header
- * followed by a variable length section made up of the name and the
- * associated data. In the case of a "stuffed" entry, the value is
- * __inline__ directly after the name, the ea_num_ptrs entry will be
- * zero in that case. For non-"stuffed" entries, there will be
- * a set of pointers (aligned to 8 byte boundary) to the block(s)
- * containing the value.
- *
- * The blocks containing the values and the blocks containing the
- * extended attribute headers themselves all start with the common
- * metadata header. Each inode, if it has extended attributes, will
- * have either a single block containing the extended attribute headers
- * or a single indirect block pointing to blocks containing the
- * extended attribute headers.
- *
- * The maximum size of the data part of an extended attribute is 64k
- * so the number of blocks required depends upon block size. Since the
- * block size also determines the number of pointers in an indirect
- * block, its a fairly complicated calculation to work out the maximum
- * number of blocks that an inode may have relating to extended attributes.
- *
- */
-
-#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 */
-#define GFS2_LOG_HEAD_FLUSH_NORMAL	0x00000002 /* normal log flush */
-#define GFS2_LOG_HEAD_FLUSH_SYNC	0x00000004 /* Sync log flush */
-#define GFS2_LOG_HEAD_FLUSH_SHUTDOWN	0x00000008 /* Shutdown log flush */
-#define GFS2_LOG_HEAD_FLUSH_FREEZE	0x00000010 /* Freeze flush */
-#define GFS2_LOG_HEAD_RECOVERY		0x00000020 /* Journal recovery */
-#define GFS2_LOG_HEAD_USERSPACE		0x80000000 /* Written by gfs2-utils */
-
-/* Log flush callers */
-#define GFS2_LFC_SHUTDOWN		0x00000100
-#define GFS2_LFC_JDATA_WPAGES		0x00000200
-#define GFS2_LFC_SET_FLAGS		0x00000400
-#define GFS2_LFC_AIL_EMPTY_GL		0x00000800
-#define GFS2_LFC_AIL_FLUSH		0x00001000
-#define GFS2_LFC_RGRP_GO_SYNC		0x00002000
-#define GFS2_LFC_INODE_GO_SYNC		0x00004000
-#define GFS2_LFC_INODE_GO_INVAL		0x00008000
-#define GFS2_LFC_FREEZE_GO_SYNC		0x00010000
-#define GFS2_LFC_KILL_SB		0x00020000
-#define GFS2_LFC_DO_SYNC		0x00040000
-#define GFS2_LFC_INPLACE_RESERVE	0x00080000
-#define GFS2_LFC_WRITE_INODE		0x00100000
-#define GFS2_LFC_MAKE_FS_RO		0x00200000
-#define GFS2_LFC_SYNC_FS		0x00400000
-#define GFS2_LFC_EVICT_INODE		0x00800000
-#define GFS2_LFC_TRANS_END		0x01000000
-#define GFS2_LFC_LOGD_JFLUSH_REQD	0x02000000
-#define GFS2_LFC_LOGD_AIL_FLUSH_REQD	0x04000000
-
-#define LH_V1_SIZE (offsetofend(struct gfs2_log_header, lh_hash))
-
-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;		/* crc up to here with this field 0 */
-
-	/* Version 2 additional fields start here */
-	__be32 lh_crc;		/* crc32c from lh_nsec to end of block */
-	__be32 lh_nsec;		/* Nanoseconds of timestamp */
-	__be64 lh_sec;		/* Seconds of timestamp */
-	__be64 lh_addr;		/* Block addr of this log header (absolute) */
-	__be64 lh_jinode;	/* Journal inode number */
-	__be64 lh_statfs_addr;	/* Local statfs inode number */
-	__be64 lh_quota_addr;	/* Local quota change inode number */
-
-	/* Statfs local changes (i.e. diff from global statfs) */
-	__be64 lh_local_total;
-	__be64 lh_local_free;
-	__be64 lh_local_dinodes;
-};
-
-/*
- * 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;
-};
-
-/*
- * 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;
-};
-
-/*
- * 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_lvb {
-        __be32 qb_magic;
-        __u32 __pad;
-        __be64 qb_limit;      /* Hard limit of # blocks to alloc */
-        __be64 qb_warn;       /* Warn user when alloc is above this # */
-        __be64 qb_value;       /* Current # blocks allocated */
-};
-
-#endif /* __GFS2_ONDISK_DOT_H__ */
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 
+/* 
+ * 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__ 
+ 
+#include <linux/types.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_FREEZE_LOCK	2 
+#define GFS2_RENAME_LOCK	3 
+#define GFS2_CONTROL_LOCK	4 
+#define GFS2_MOUNTED_LOCK	5 
+ 
+/* 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; 
+}; 
+ 
+/* 
+ * 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; 
+	/* This union is to keep userspace happy */ 
+	union { 
+		__be32 mh_jid;		/* Was incarnation number in gfs1 */ 
+		__be32 __pad1; 
+	}; 
+}; 
+ 
+/* 
+ * 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]; 
+ 
+	struct gfs2_inum __pad3; /* Was quota inode in gfs1 */ 
+	struct gfs2_inum __pad4; /* Was licence inode in gfs1 */ 
+#define GFS2_HAS_UUID 1 
+	__u8 sb_uuid[16]; /* The UUID, maybe 0 for backwards compat */ 
+}; 
+ 
+/* 
+ * 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]; 
+}; 
+ 
+/* 
+ * 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 
+#define GFS2_RGF_TRIMMED	0x00000010 
+ 
+struct gfs2_rgrp_lvb { 
+	__be32 rl_magic; 
+	__be32 rl_flags; 
+	__be32 rl_free; 
+	__be32 rl_dinodes; 
+	__be64 rl_igeneration; 
+	__be32 rl_unlinked; 
+	__be32 __pad; 
+}; 
+ 
+struct gfs2_rgrp { 
+	struct gfs2_meta_header rg_header; 
+ 
+	__be32 rg_flags; 
+	__be32 rg_free; 
+	__be32 rg_dinodes; 
+	union { 
+		__be32 __pad; 
+		__be32 rg_skip; /* Distance to the next rgrp in fs blocks */ 
+	}; 
+	__be64 rg_igeneration; 
+	/* The following 3 fields are duplicated from gfs2_rindex to reduce 
+	   reliance on the rindex */ 
+	__be64 rg_data0;     /* First data location */ 
+	__be32 rg_data;      /* Number of data blocks in rgrp */ 
+	__be32 rg_bitbytes;  /* Number of bytes in data bitmaps */ 
+	__be32 rg_crc;       /* crc32 of the structure with this field 0 */ 
+ 
+	__u8 rg_reserved[60]; /* Several fields from gfs1 now reserved */ 
+}; 
+ 
+/* 
+ * quota structure 
+ */ 
+ 
+struct gfs2_quota { 
+	__be64 qu_limit; 
+	__be64 qu_warn; 
+	__be64 qu_value; 
+	__u8 qu_reserved[64]; 
+}; 
+ 
+/* 
+ * 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_TopLevel		= 10, 
+	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_TOPDIR			0x00000400 /* New in gfs2 */ 
+#define GFS2_DIF_TRUNC_IN_PROG		0x20000000 /* New in gfs2 */ 
+#define GFS2_DIF_INHERIT_DIRECTIO	0x40000000 /* only in gfs1 */ 
+#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 */ 
+	__be32 di_atime_nsec;   /* nsec portion of atime */ 
+	__be32 di_mtime_nsec;   /* nsec portion of mtime */ 
+	__be32 di_ctime_nsec;   /* nsec portion of ctime */ 
+ 
+	__u8 di_reserved[44]; 
+}; 
+ 
+/* 
+ * 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) 
+#define GFS2_MIN_DIRENT_SIZE (GFS2_DIRENT_SIZE(1)) 
+ 
+ 
+struct gfs2_dirent { 
+	struct gfs2_inum de_inum; 
+	__be32 de_hash; 
+	__be16 de_rec_len; 
+	__be16 de_name_len; 
+	__be16 de_type; 
+	__be16 de_rahead; 
+	union { 
+		__u8 __pad[12]; 
+		struct { 
+			__u32 de_cookie; /* ondisk value not used */ 
+			__u8 pad3[8]; 
+		}; 
+	}; 
+}; 
+ 
+/* 
+ * 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 */ 
+ 
+	union { 
+		__u8 lf_reserved[64]; 
+		struct { 
+			__be64 lf_inode;	/* Dir inode number */ 
+			__be32 lf_dist;		/* Dist from inode on chain */ 
+			__be32 lf_nsec;		/* Last ins/del usecs */ 
+			__be64 lf_sec;		/* Last ins/del in secs */ 
+			__u8 lf_reserved2[40]; 
+		}; 
+	}; 
+}; 
+ 
+/* 
+ * Extended attribute header format 
+ * 
+ * This works in a similar way to dirents. There is a fixed size header 
+ * followed by a variable length section made up of the name and the 
+ * associated data. In the case of a "stuffed" entry, the value is 
+ * __inline__ directly after the name, the ea_num_ptrs entry will be 
+ * zero in that case. For non-"stuffed" entries, there will be 
+ * a set of pointers (aligned to 8 byte boundary) to the block(s) 
+ * containing the value. 
+ * 
+ * The blocks containing the values and the blocks containing the 
+ * extended attribute headers themselves all start with the common 
+ * metadata header. Each inode, if it has extended attributes, will 
+ * have either a single block containing the extended attribute headers 
+ * or a single indirect block pointing to blocks containing the 
+ * extended attribute headers. 
+ * 
+ * The maximum size of the data part of an extended attribute is 64k 
+ * so the number of blocks required depends upon block size. Since the 
+ * block size also determines the number of pointers in an indirect 
+ * block, its a fairly complicated calculation to work out the maximum 
+ * number of blocks that an inode may have relating to extended attributes. 
+ * 
+ */ 
+ 
+#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 */ 
+#define GFS2_LOG_HEAD_FLUSH_NORMAL	0x00000002 /* normal log flush */ 
+#define GFS2_LOG_HEAD_FLUSH_SYNC	0x00000004 /* Sync log flush */ 
+#define GFS2_LOG_HEAD_FLUSH_SHUTDOWN	0x00000008 /* Shutdown log flush */ 
+#define GFS2_LOG_HEAD_FLUSH_FREEZE	0x00000010 /* Freeze flush */ 
+#define GFS2_LOG_HEAD_RECOVERY		0x00000020 /* Journal recovery */ 
+#define GFS2_LOG_HEAD_USERSPACE		0x80000000 /* Written by gfs2-utils */ 
+ 
+/* Log flush callers */ 
+#define GFS2_LFC_SHUTDOWN		0x00000100 
+#define GFS2_LFC_JDATA_WPAGES		0x00000200 
+#define GFS2_LFC_SET_FLAGS		0x00000400 
+#define GFS2_LFC_AIL_EMPTY_GL		0x00000800 
+#define GFS2_LFC_AIL_FLUSH		0x00001000 
+#define GFS2_LFC_RGRP_GO_SYNC		0x00002000 
+#define GFS2_LFC_INODE_GO_SYNC		0x00004000 
+#define GFS2_LFC_INODE_GO_INVAL		0x00008000 
+#define GFS2_LFC_FREEZE_GO_SYNC		0x00010000 
+#define GFS2_LFC_KILL_SB		0x00020000 
+#define GFS2_LFC_DO_SYNC		0x00040000 
+#define GFS2_LFC_INPLACE_RESERVE	0x00080000 
+#define GFS2_LFC_WRITE_INODE		0x00100000 
+#define GFS2_LFC_MAKE_FS_RO		0x00200000 
+#define GFS2_LFC_SYNC_FS		0x00400000 
+#define GFS2_LFC_EVICT_INODE		0x00800000 
+#define GFS2_LFC_TRANS_END		0x01000000 
+#define GFS2_LFC_LOGD_JFLUSH_REQD	0x02000000 
+#define GFS2_LFC_LOGD_AIL_FLUSH_REQD	0x04000000 
+ 
+#define LH_V1_SIZE (offsetofend(struct gfs2_log_header, lh_hash)) 
+ 
+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;		/* crc up to here with this field 0 */ 
+ 
+	/* Version 2 additional fields start here */ 
+	__be32 lh_crc;		/* crc32c from lh_nsec to end of block */ 
+	__be32 lh_nsec;		/* Nanoseconds of timestamp */ 
+	__be64 lh_sec;		/* Seconds of timestamp */ 
+	__be64 lh_addr;		/* Block addr of this log header (absolute) */ 
+	__be64 lh_jinode;	/* Journal inode number */ 
+	__be64 lh_statfs_addr;	/* Local statfs inode number */ 
+	__be64 lh_quota_addr;	/* Local quota change inode number */ 
+ 
+	/* Statfs local changes (i.e. diff from global statfs) */ 
+	__be64 lh_local_total; 
+	__be64 lh_local_free; 
+	__be64 lh_local_dinodes; 
+}; 
+ 
+/* 
+ * 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; 
+}; 
+ 
+/* 
+ * 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; 
+}; 
+ 
+/* 
+ * 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_lvb { 
+        __be32 qb_magic; 
+        __u32 __pad; 
+        __be64 qb_limit;      /* Hard limit of # blocks to alloc */ 
+        __be64 qb_warn;       /* Warn user when alloc is above this # */ 
+        __be64 qb_value;       /* Current # blocks allocated */ 
+}; 
+ 
+#endif /* __GFS2_ONDISK_DOT_H__ */