[linux-block.git] / fs / udf / udf_sb.h

#ifndef __LINUX_UDF_SB_H
#define __LINUX_UDF_SB_H

#include <linux/mutex.h>

/* Since UDF 2.01 is ISO 13346 based... */
#define UDF_SUPER_MAGIC			0x15013346

#define UDF_MAX_READ_VERSION		0x0250
#define UDF_MAX_WRITE_VERSION		0x0201

#define UDF_FLAG_USE_EXTENDED_FE	0
#define UDF_VERS_USE_EXTENDED_FE	0x0200
#define UDF_FLAG_USE_STREAMS		1
#define UDF_VERS_USE_STREAMS		0x0200
#define UDF_FLAG_USE_SHORT_AD		2
#define UDF_FLAG_USE_AD_IN_ICB		3
#define UDF_FLAG_USE_FILE_CTIME_EA	4
#define UDF_FLAG_STRICT			5
#define UDF_FLAG_UNDELETE		6
#define UDF_FLAG_UNHIDE			7
#define UDF_FLAG_VARCONV		8
#define UDF_FLAG_NLS_MAP		9
#define UDF_FLAG_UTF8			10
#define UDF_FLAG_UID_FORGET     11    /* save -1 for uid to disk */
#define UDF_FLAG_UID_IGNORE     12    /* use sb uid instead of on disk uid */
#define UDF_FLAG_GID_FORGET     13
#define UDF_FLAG_GID_IGNORE     14
#define UDF_FLAG_UID_SET	15
#define UDF_FLAG_GID_SET	16
#define UDF_FLAG_SESSION_SET	17
#define UDF_FLAG_LASTBLOCK_SET	18

#define UDF_PART_FLAG_UNALLOC_BITMAP	0x0001
#define UDF_PART_FLAG_UNALLOC_TABLE	0x0002
#define UDF_PART_FLAG_FREED_BITMAP	0x0004
#define UDF_PART_FLAG_FREED_TABLE	0x0008
#define UDF_PART_FLAG_READ_ONLY		0x0010
#define UDF_PART_FLAG_WRITE_ONCE	0x0020
#define UDF_PART_FLAG_REWRITABLE	0x0040
#define UDF_PART_FLAG_OVERWRITABLE	0x0080

#define UDF_MAX_BLOCK_LOADED	8

#define UDF_TYPE1_MAP15			0x1511U
#define UDF_VIRTUAL_MAP15		0x1512U
#define UDF_VIRTUAL_MAP20		0x2012U
#define UDF_SPARABLE_MAP15		0x1522U
#define UDF_METADATA_MAP25		0x2511U

#pragma pack(1) /* XXX(hch): Why?  This file just defines in-core structures */

struct udf_meta_data {
	__u32	s_meta_file_loc;
	__u32	s_mirror_file_loc;
	__u32	s_bitmap_file_loc;
	__u32	s_alloc_unit_size;
	__u16	s_align_unit_size;
	__u8 	s_dup_md_flag;
	struct inode *s_metadata_fe;
	struct inode *s_mirror_fe;
	struct inode *s_bitmap_fe;
};

struct udf_sparing_data {
	__u16	s_packet_len;
	struct buffer_head *s_spar_map[4];
};

struct udf_virtual_data {
	__u32	s_num_entries;
	__u16	s_start_offset;
};

struct udf_bitmap {
	__u32			s_extLength;
	__u32			s_extPosition;
	__u16			s_nr_groups;
	struct buffer_head 	**s_block_bitmap;
};

struct udf_part_map {
	union {
		struct udf_bitmap	*s_bitmap;
		struct inode		*s_table;
	} s_uspace;
	union {
		struct udf_bitmap	*s_bitmap;
		struct inode		*s_table;
	} s_fspace;
	__u32	s_partition_root;
	__u32	s_partition_len;
	__u16	s_partition_type;
	__u16	s_partition_num;
	union {
		struct udf_sparing_data s_sparing;
		struct udf_virtual_data s_virtual;
		struct udf_meta_data s_metadata;
	} s_type_specific;
	__u32	(*s_partition_func)(struct super_block *, __u32, __u16, __u32);
	__u16	s_volumeseqnum;
	__u16	s_partition_flags;
};

#pragma pack()

struct udf_sb_info {
	struct udf_part_map	*s_partmaps;
	__u8			s_volume_ident[32];

	/* Overall info */
	__u16			s_partitions;
	__u16			s_partition;

	/* Sector headers */
	__s32			s_session;
	__u32			s_anchor[3];
	__u32			s_last_block;

	struct buffer_head	*s_lvid_bh;

	/* Default permissions */
	mode_t			s_umask;
	gid_t			s_gid;
	uid_t			s_uid;

	/* Root Info */
	struct timespec		s_record_time;

	/* Fileset Info */
	__u16			s_serial_number;

	/* highest UDF revision we have recorded to this media */
	__u16			s_udfrev;

	/* Miscellaneous flags */
	__u32			s_flags;

	/* Encoding info */
	struct nls_table	*s_nls_map;

	/* VAT inode */
	struct inode		*s_vat_inode;

	struct mutex		s_alloc_mutex;
};

static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
{
	return sb->s_fs_info;
}

struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi);

int udf_compute_nr_groups(struct super_block *sb, u32 partition);

#define UDF_QUERY_FLAG(X,Y)			( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
#define UDF_SET_FLAG(X,Y)			( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
#define UDF_CLEAR_FLAG(X,Y)			( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )

#endif /* __LINUX_UDF_SB_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef __LINUX_UDF_SB_H
	2	#define __LINUX_UDF_SB_H
	3
15aebd28 CH	4	#include <linux/mutex.h>
15aebd28 CH	5
1da177e4 LT	6	/* Since UDF 2.01 is ISO 13346 based... */
	7	#define UDF_SUPER_MAGIC 0x15013346
	8
bfb257a5	9	#define UDF_MAX_READ_VERSION 0x0250
1da177e4 LT	10	#define UDF_MAX_WRITE_VERSION 0x0201
	11
	12	#define UDF_FLAG_USE_EXTENDED_FE 0
	13	#define UDF_VERS_USE_EXTENDED_FE 0x0200
	14	#define UDF_FLAG_USE_STREAMS 1
	15	#define UDF_VERS_USE_STREAMS 0x0200
	16	#define UDF_FLAG_USE_SHORT_AD 2
	17	#define UDF_FLAG_USE_AD_IN_ICB 3
	18	#define UDF_FLAG_USE_FILE_CTIME_EA 4
	19	#define UDF_FLAG_STRICT 5
	20	#define UDF_FLAG_UNDELETE 6
	21	#define UDF_FLAG_UNHIDE 7
	22	#define UDF_FLAG_VARCONV 8
	23	#define UDF_FLAG_NLS_MAP 9
	24	#define UDF_FLAG_UTF8 10
28de7948 CG	25	#define UDF_FLAG_UID_FORGET 11 /* save -1 for uid to disk */
28de7948 CG	26	#define UDF_FLAG_UID_IGNORE 12 /* use sb uid instead of on disk uid */
4d6660eb PS	27	#define UDF_FLAG_GID_FORGET 13
4d6660eb PS	28	#define UDF_FLAG_GID_IGNORE 14
ca76d2d8 CG	29	#define UDF_FLAG_UID_SET 15
ca76d2d8 CG	30	#define UDF_FLAG_GID_SET 16
6da80894 MS	31	#define UDF_FLAG_SESSION_SET 17
6da80894 MS	32	#define UDF_FLAG_LASTBLOCK_SET 18
1da177e4 LT	33
	34	#define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
	35	#define UDF_PART_FLAG_UNALLOC_TABLE 0x0002
	36	#define UDF_PART_FLAG_FREED_BITMAP 0x0004
	37	#define UDF_PART_FLAG_FREED_TABLE 0x0008
	38	#define UDF_PART_FLAG_READ_ONLY 0x0010
	39	#define UDF_PART_FLAG_WRITE_ONCE 0x0020
	40	#define UDF_PART_FLAG_REWRITABLE 0x0040
	41	#define UDF_PART_FLAG_OVERWRITABLE 0x0080
	42
15aebd28 CH	43	#define UDF_MAX_BLOCK_LOADED 8
	44
	45	#define UDF_TYPE1_MAP15 0x1511U
	46	#define UDF_VIRTUAL_MAP15 0x1512U
	47	#define UDF_VIRTUAL_MAP20 0x2012U
	48	#define UDF_SPARABLE_MAP15 0x1522U
bfb257a5	49	#define UDF_METADATA_MAP25 0x2511U
15aebd28 CH	50
	51	#pragma pack(1) /* XXX(hch): Why? This file just defines in-core structures */
	52
bfb257a5 JK	53	struct udf_meta_data {
	54	__u32 s_meta_file_loc;
	55	__u32 s_mirror_file_loc;
	56	__u32 s_bitmap_file_loc;
	57	__u32 s_alloc_unit_size;
	58	__u16 s_align_unit_size;
	59	__u8 s_dup_md_flag;
	60	struct inode *s_metadata_fe;
	61	struct inode *s_mirror_fe;
	62	struct inode *s_bitmap_fe;
	63	};
	64
15aebd28 CH	65	struct udf_sparing_data {
	66	__u16 s_packet_len;
	67	struct buffer_head *s_spar_map[4];
	68	};
	69
	70	struct udf_virtual_data {
	71	__u32 s_num_entries;
	72	__u16 s_start_offset;
	73	};
	74
	75	struct udf_bitmap {
	76	__u32 s_extLength;
	77	__u32 s_extPosition;
	78	__u16 s_nr_groups;
	79	struct buffer_head **s_block_bitmap;
	80	};
	81
	82	struct udf_part_map {
	83	union {
	84	struct udf_bitmap *s_bitmap;
	85	struct inode *s_table;
	86	} s_uspace;
	87	union {
	88	struct udf_bitmap *s_bitmap;
	89	struct inode *s_table;
	90	} s_fspace;
	91	__u32 s_partition_root;
	92	__u32 s_partition_len;
	93	__u16 s_partition_type;
	94	__u16 s_partition_num;
	95	union {
	96	struct udf_sparing_data s_sparing;
	97	struct udf_virtual_data s_virtual;
bfb257a5	98	struct udf_meta_data s_metadata;
15aebd28 CH	99	} s_type_specific;
	100	__u32 (s_partition_func)(struct super_block , __u32, __u16, __u32);
	101	__u16 s_volumeseqnum;
	102	__u16 s_partition_flags;
	103	};
	104
	105	#pragma pack()
	106
	107	struct udf_sb_info {
	108	struct udf_part_map *s_partmaps;
	109	__u8 s_volume_ident[32];
	110
	111	/* Overall info */
	112	__u16 s_partitions;
	113	__u16 s_partition;
	114
	115	/* Sector headers */
	116	__s32 s_session;
423cf6dc	117	__u32 s_anchor[3];
15aebd28 CH	118	__u32 s_last_block;
	119
	120	struct buffer_head *s_lvid_bh;
	121
	122	/* Default permissions */
	123	mode_t s_umask;
	124	gid_t s_gid;
	125	uid_t s_uid;
	126
	127	/* Root Info */
	128	struct timespec s_record_time;
	129
	130	/* Fileset Info */
	131	__u16 s_serial_number;
	132
	133	/* highest UDF revision we have recorded to this media */
	134	__u16 s_udfrev;
	135
	136	/* Miscellaneous flags */
	137	__u32 s_flags;
	138
	139	/* Encoding info */
	140	struct nls_table *s_nls_map;
	141
	142	/* VAT inode */
	143	struct inode *s_vat_inode;
	144
	145	struct mutex s_alloc_mutex;
	146	};
	147
1da177e4 LT	148	static inline struct udf_sb_info UDF_SB(struct super_block sb)
	149	{
	150	return sb->s_fs_info;
	151	}
	152
6c79e987	153	struct logicalVolIntegrityDescImpUse udf_sb_lvidiu(struct udf_sb_info sbi);
1da177e4	154
883cb9d1 MS	155	int udf_compute_nr_groups(struct super_block *sb, u32 partition);
883cb9d1 MS	156
1da177e4 LT	157	#define UDF_QUERY_FLAG(X,Y) ( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
	158	#define UDF_SET_FLAG(X,Y) ( UDF_SB(X)->s_flags \|= ( 1 << (Y) ) )
	159	#define UDF_CLEAR_FLAG(X,Y) ( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
	160
28de7948	161	#endif /* __LINUX_UDF_SB_H */