/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */


#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



#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



#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

#define GFS2_FORMAT_RI		1100
#define GFS2_FORMAT_DE		1200
#define GFS2_FORMAT_QU		1500

#define GFS2_FORMAT_FS		1802
#define GFS2_FORMAT_MULTI	1900



struct gfs2_inum {
	__be64 no_formal_ino;
	__be64 no_addr;
};



#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;		
	__be32 mh_format;
	
	union {
		__be32 mh_jid;		
		__be32 __pad1;
	};
};




#define GFS2_SB_ADDR		128


#define GFS2_SB_LOCK		0


#define GFS2_LOCKNAME_LEN	64

struct gfs2_sb {
	struct gfs2_meta_header sb_header;

	__be32 sb_fs_format;
	__be32 sb_multihost_format;
	__u32  __pad0;	

	__be32 sb_bsize;
	__be32 sb_bsize_shift;
	__u32 __pad1;	

	struct gfs2_inum sb_master_dir; 
	struct gfs2_inum __pad2; 
	struct gfs2_inum sb_root_dir;

	char sb_lockproto[GFS2_LOCKNAME_LEN];
	char sb_locktable[GFS2_LOCKNAME_LEN];

	struct gfs2_inum __pad3; 
	struct gfs2_inum __pad4; 
#define GFS2_HAS_UUID 1
	__u8 sb_uuid[16]; 
};



struct gfs2_rindex {
	__be64 ri_addr;	
	__be32 ri_length;	
	__u32 __pad;

	__be64 ri_data0;	
	__be32 ri_data;	

	__be32 ri_bitbytes;	

	__u8 ri_reserved[64];
};




#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_inode_lvb {
	__be32 ri_magic;
	__be32 __pad;
	__be64 ri_generation_deleted;
};

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; 
	};
	__be64 rg_igeneration;
	
	__be64 rg_data0;     
	__be32 rg_data;      
	__be32 rg_bitbytes;  
	__be32 rg_crc;       

	__u8 rg_reserved[60]; 
};



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



#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,
};


#define GFS2_DIF_JDATA			0x00000001
#define GFS2_DIF_EXHASH			0x00000002
#define GFS2_DIF_UNUSED			0x00000004  
#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 
#define GFS2_DIF_TOPDIR			0x00000400 
#define GFS2_DIF_TRUNC_IN_PROG		0x20000000 
#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;	
	__be32 di_uid;	
	__be32 di_gid;	
	__be32 di_nlink;	
	__be64 di_size;	
	__be64 di_blocks;	
	__be64 di_atime;	
	__be64 di_mtime;	
	__be64 di_ctime;	
	__be32 di_major;	
	__be32 di_minor;	

	
	__be64 di_goal_meta;	
	__be64 di_goal_data;	
	__be64 di_generation;	

	__be32 di_flags;	
	__be32 di_payload_format;  
	__u16 __pad1;	
	__be16 di_height;	
	__u32 __pad2;	

	
	__u16 __pad3;	
	__be16 di_depth;	
	__be32 di_entries;	

	struct gfs2_inum __pad4; 

	__be64 di_eattr;	
	__be32 di_atime_nsec;   
	__be32 di_mtime_nsec;   
	__be32 di_ctime_nsec;   

	__u8 di_reserved[44];
};



#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; 
			__u8 pad3[8];
		};
	};
};



struct gfs2_leaf {
	struct gfs2_meta_header lf_header;

	__be16 lf_depth;		
	__be16 lf_entries;		
	__be32 lf_dirent_format;	
	__be64 lf_next;			

	union {
		__u8 lf_reserved[64];
		struct {
			__be64 lf_inode;	
			__be32 lf_dist;		
			__be32 lf_nsec;		
			__be64 lf_sec;		
			__u8 lf_reserved2[40];
		};
	};
};



#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_TRUSTED	4

#define GFS2_EATYPE_LAST	4
#define GFS2_EATYPE_VALID(x)	((x) <= GFS2_EATYPE_LAST)

#define GFS2_EAFLAG_LAST	0x01	

struct gfs2_ea_header {
	__be32 ea_rec_len;
	__be32 ea_data_len;
	__u8 ea_name_len;	
	__u8 ea_type;		
	__u8 ea_flags;		
	__u8 ea_num_ptrs;
	__u32 __pad;
};



#define GFS2_LOG_HEAD_UNMOUNT		0x00000001 
#define GFS2_LOG_HEAD_FLUSH_NORMAL	0x00000002 
#define GFS2_LOG_HEAD_FLUSH_SYNC	0x00000004 
#define GFS2_LOG_HEAD_FLUSH_SHUTDOWN	0x00000008 
#define GFS2_LOG_HEAD_FLUSH_FREEZE	0x00000010 
#define GFS2_LOG_HEAD_RECOVERY		0x00000020 
#define GFS2_LOG_HEAD_USERSPACE		0x80000000 


#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;	
	__be32 lh_flags;	
	__be32 lh_tail;		
	__be32 lh_blkno;
	__be32 lh_hash;		

	
	__be32 lh_crc;		
	__be32 lh_nsec;		
	__be64 lh_sec;		
	__be64 lh_addr;		
	__be64 lh_jinode;	
	__be64 lh_statfs_addr;	
	__be64 lh_quota_addr;	

	
	__be64 lh_local_total;
	__be64 lh_local_free;
	__be64 lh_local_dinodes;
};



#define GFS2_LOG_DESC_METADATA	300


#define GFS2_LOG_DESC_REVOKE	301


#define GFS2_LOG_DESC_JDATA	302


struct gfs2_log_descriptor {
	struct gfs2_meta_header ld_header;

	__be32 ld_type;		
	__be32 ld_length;	
	__be32 ld_data1;	
	__be32 ld_data2;	

	__u8 ld_reserved[32];
};



#define GFS2_INUM_QUANTUM	1048576

struct gfs2_inum_range {
	__be64 ir_start;
	__be64 ir_length;
};



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



#define GFS2_QCF_USER		0x00000001

struct gfs2_quota_change {
	__be64 qc_change;
	__be32 qc_flags;	
	__be32 qc_id;
};

struct gfs2_quota_lvb {
        __be32 qb_magic;
        __u32 __pad;
        __be64 qb_limit;      
        __be64 qb_warn;       
        __be64 qb_value;       
};

#endif 
