[linux-2.6-block.git] / fs / udf / udf_sb.h

#ifndef __LINUX_UDF_SB_H
#define __LINUX_UDF_SB_H

#include <linux/mutex.h>
#include <linux/bitops.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_FLAG_BLOCKSIZE_SET	19

#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

#define UDF_INVALID_MODE		((mode_t)-1)

#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;
	__u32			s_last_block;

	struct buffer_head	*s_lvid_bh;

	/* Default permissions */
	mode_t			s_umask;
	gid_t			s_gid;
	uid_t			s_uid;
	mode_t			s_fmode;
	mode_t			s_dmode;
	/* Lock protecting consistency of above permission settings */
	rwlock_t		s_cred_lock;

	/* 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 */
	unsigned long		s_flags;

	/* Encoding info */
	struct nls_table	*s_nls_map;

	/* VAT inode */
	struct inode		*s_vat_inode;

	struct mutex		s_alloc_mutex;
	/* Protected by s_alloc_mutex */
	unsigned int		s_lvid_dirty;
};

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);

static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
{
	return test_bit(flag, &UDF_SB(sb)->s_flags);
}

static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
{
	set_bit(flag, &UDF_SB(sb)->s_flags);
}

static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
{
	clear_bit(flag, &UDF_SB(sb)->s_flags);
}

#endif /* __LINUX_UDF_SB_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef __LINUX_UDF_SB_H
	2	#define __LINUX_UDF_SB_H
	3
15aebd28	4	#include <linux/mutex.h>
f2a6cc1f	5	#include <linux/bitops.h>
15aebd28	6
1da177e4 LT	7	/* Since UDF 2.01 is ISO 13346 based... */
	8	#define UDF_SUPER_MAGIC 0x15013346
	9
bfb257a5	10	#define UDF_MAX_READ_VERSION 0x0250
1da177e4 LT	11	#define UDF_MAX_WRITE_VERSION 0x0201
	12
	13	#define UDF_FLAG_USE_EXTENDED_FE 0
	14	#define UDF_VERS_USE_EXTENDED_FE 0x0200
	15	#define UDF_FLAG_USE_STREAMS 1
	16	#define UDF_VERS_USE_STREAMS 0x0200
	17	#define UDF_FLAG_USE_SHORT_AD 2
	18	#define UDF_FLAG_USE_AD_IN_ICB 3
	19	#define UDF_FLAG_USE_FILE_CTIME_EA 4
	20	#define UDF_FLAG_STRICT 5
	21	#define UDF_FLAG_UNDELETE 6
	22	#define UDF_FLAG_UNHIDE 7
	23	#define UDF_FLAG_VARCONV 8
	24	#define UDF_FLAG_NLS_MAP 9
	25	#define UDF_FLAG_UTF8 10
28de7948 CG	26	#define UDF_FLAG_UID_FORGET 11 /* save -1 for uid to disk */
28de7948 CG	27	#define UDF_FLAG_UID_IGNORE 12 /* use sb uid instead of on disk uid */
4d6660eb PS	28	#define UDF_FLAG_GID_FORGET 13
4d6660eb PS	29	#define UDF_FLAG_GID_IGNORE 14
ca76d2d8 CG	30	#define UDF_FLAG_UID_SET 15
ca76d2d8 CG	31	#define UDF_FLAG_GID_SET 16
6da80894 MS	32	#define UDF_FLAG_SESSION_SET 17
6da80894 MS	33	#define UDF_FLAG_LASTBLOCK_SET 18
1197e4df	34	#define UDF_FLAG_BLOCKSIZE_SET 19
1da177e4 LT	35
	36	#define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
	37	#define UDF_PART_FLAG_UNALLOC_TABLE 0x0002
	38	#define UDF_PART_FLAG_FREED_BITMAP 0x0004
	39	#define UDF_PART_FLAG_FREED_TABLE 0x0008
	40	#define UDF_PART_FLAG_READ_ONLY 0x0010
	41	#define UDF_PART_FLAG_WRITE_ONCE 0x0020
	42	#define UDF_PART_FLAG_REWRITABLE 0x0040
	43	#define UDF_PART_FLAG_OVERWRITABLE 0x0080
	44
15aebd28 CH	45	#define UDF_MAX_BLOCK_LOADED 8
	46
	47	#define UDF_TYPE1_MAP15 0x1511U
	48	#define UDF_VIRTUAL_MAP15 0x1512U
	49	#define UDF_VIRTUAL_MAP20 0x2012U
	50	#define UDF_SPARABLE_MAP15 0x1522U
bfb257a5	51	#define UDF_METADATA_MAP25 0x2511U
15aebd28	52
87bc730c MS	53	#define UDF_INVALID_MODE ((mode_t)-1)
87bc730c MS	54
15aebd28 CH	55	#pragma pack(1) /* XXX(hch): Why? This file just defines in-core structures */
15aebd28 CH	56
bfb257a5 JK	57	struct udf_meta_data {
	58	__u32 s_meta_file_loc;
	59	__u32 s_mirror_file_loc;
	60	__u32 s_bitmap_file_loc;
	61	__u32 s_alloc_unit_size;
	62	__u16 s_align_unit_size;
	63	__u8 s_dup_md_flag;
	64	struct inode *s_metadata_fe;
	65	struct inode *s_mirror_fe;
	66	struct inode *s_bitmap_fe;
	67	};
	68
15aebd28 CH	69	struct udf_sparing_data {
	70	__u16 s_packet_len;
	71	struct buffer_head *s_spar_map[4];
	72	};
	73
	74	struct udf_virtual_data {
	75	__u32 s_num_entries;
	76	__u16 s_start_offset;
	77	};
	78
	79	struct udf_bitmap {
	80	__u32 s_extLength;
	81	__u32 s_extPosition;
	82	__u16 s_nr_groups;
	83	struct buffer_head **s_block_bitmap;
	84	};
	85
	86	struct udf_part_map {
	87	union {
	88	struct udf_bitmap *s_bitmap;
	89	struct inode *s_table;
	90	} s_uspace;
	91	union {
	92	struct udf_bitmap *s_bitmap;
	93	struct inode *s_table;
	94	} s_fspace;
	95	__u32 s_partition_root;
	96	__u32 s_partition_len;
	97	__u16 s_partition_type;
	98	__u16 s_partition_num;
	99	union {
	100	struct udf_sparing_data s_sparing;
	101	struct udf_virtual_data s_virtual;
bfb257a5	102	struct udf_meta_data s_metadata;
15aebd28 CH	103	} s_type_specific;
	104	__u32 (s_partition_func)(struct super_block , __u32, __u16, __u32);
	105	__u16 s_volumeseqnum;
	106	__u16 s_partition_flags;
	107	};
	108
	109	#pragma pack()
	110
	111	struct udf_sb_info {
	112	struct udf_part_map *s_partmaps;
	113	__u8 s_volume_ident[32];
	114
	115	/* Overall info */
	116	__u16 s_partitions;
	117	__u16 s_partition;
	118
	119	/* Sector headers */
	120	__s32 s_session;
40346005	121	__u32 s_anchor;
15aebd28 CH	122	__u32 s_last_block;
	123
	124	struct buffer_head *s_lvid_bh;
	125
	126	/* Default permissions */
	127	mode_t s_umask;
	128	gid_t s_gid;
	129	uid_t s_uid;
7ac9bcd5 MS	130	mode_t s_fmode;
7ac9bcd5 MS	131	mode_t s_dmode;
c03cad24 JK	132	/* Lock protecting consistency of above permission settings */
c03cad24 JK	133	rwlock_t s_cred_lock;
15aebd28 CH	134
	135	/* Root Info */
	136	struct timespec s_record_time;
	137
	138	/* Fileset Info */
	139	__u16 s_serial_number;
	140
	141	/* highest UDF revision we have recorded to this media */
	142	__u16 s_udfrev;
	143
	144	/* Miscellaneous flags */
f2a6cc1f	145	unsigned long s_flags;
15aebd28 CH	146
	147	/* Encoding info */
	148	struct nls_table *s_nls_map;
	149
	150	/* VAT inode */
	151	struct inode *s_vat_inode;
	152
	153	struct mutex s_alloc_mutex;
146bca72 JK	154	/* Protected by s_alloc_mutex */
146bca72 JK	155	unsigned int s_lvid_dirty;
15aebd28 CH	156	};
15aebd28 CH	157
1da177e4 LT	158	static inline struct udf_sb_info UDF_SB(struct super_block sb)
	159	{
	160	return sb->s_fs_info;
	161	}
	162
6c79e987	163	struct logicalVolIntegrityDescImpUse udf_sb_lvidiu(struct udf_sb_info sbi);
1da177e4	164
883cb9d1 MS	165	int udf_compute_nr_groups(struct super_block *sb, u32 partition);
883cb9d1 MS	166
f2a6cc1f JK	167	static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
	168	{
	169	return test_bit(flag, &UDF_SB(sb)->s_flags);
	170	}
	171
	172	static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
	173	{
	174	set_bit(flag, &UDF_SB(sb)->s_flags);
	175	}
	176
	177	static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
	178	{
	179	clear_bit(flag, &UDF_SB(sb)->s_flags);
	180	}
1da177e4	181
28de7948	182	#endif /* __LINUX_UDF_SB_H */