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

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_UDF_SB_H
#define __LINUX_UDF_SB_H

#include <linux/mutex.h>
#include <linux/bitops.h>
#include <linux/magic.h>

#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_UID_FORGET     11    /* save -1 for uid to disk */
#define UDF_FLAG_GID_FORGET     12
#define UDF_FLAG_UID_SET	13
#define UDF_FLAG_GID_SET	14
#define UDF_FLAG_SESSION_SET	15
#define UDF_FLAG_LASTBLOCK_SET	16
#define UDF_FLAG_BLOCKSIZE_SET	17
#define UDF_FLAG_INCONSISTENT	18
#define UDF_FLAG_RW_INCOMPAT	19	/* Set when we find RW incompatible
					 * feature */

#define UDF_PART_FLAG_UNALLOC_BITMAP	0x0001
#define UDF_PART_FLAG_UNALLOC_TABLE	0x0002
#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		((umode_t)-1)

#define MF_DUPLICATE_MD		0x01
#define MF_MIRROR_FE_LOADED	0x02

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;
	/*
	 * Partition Reference Number of the associated physical / sparable
	 * partition
	 */
	__u16   s_phys_partition_ref;
	int	s_flags;
	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_extPosition;
	int			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;
	__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 */
	umode_t			s_umask;
	kgid_t			s_gid;
	kuid_t			s_uid;
	umode_t			s_fmode;
	umode_t			s_dmode;
	/* Lock protecting consistency of above permission settings */
	rwlock_t		s_cred_lock;

	/* Root Info */
	struct timespec64	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 super_block *sb);

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
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef __LINUX_UDF_SB_H
	3	#define __LINUX_UDF_SB_H
	4
15aebd28	5	#include <linux/mutex.h>
f2a6cc1f	6	#include <linux/bitops.h>
2a28900b	7	#include <linux/magic.h>
1da177e4	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
28de7948	23	#define UDF_FLAG_UID_FORGET 11 /* save -1 for uid to disk */
70260e44 JK	24	#define UDF_FLAG_GID_FORGET 12
	25	#define UDF_FLAG_UID_SET 13
	26	#define UDF_FLAG_GID_SET 14
	27	#define UDF_FLAG_SESSION_SET 15
	28	#define UDF_FLAG_LASTBLOCK_SET 16
	29	#define UDF_FLAG_BLOCKSIZE_SET 17
b72e632c	30	#define UDF_FLAG_INCONSISTENT 18
a9ad01bc JK	31	#define UDF_FLAG_RW_INCOMPAT 19 /* Set when we find RW incompatible
a9ad01bc JK	32	* feature */
1da177e4 LT	33
	34	#define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
	35	#define UDF_PART_FLAG_UNALLOC_TABLE 0x0002
1da177e4 LT	36	#define UDF_PART_FLAG_READ_ONLY 0x0010
	37	#define UDF_PART_FLAG_WRITE_ONCE 0x0020
	38	#define UDF_PART_FLAG_REWRITABLE 0x0040
	39	#define UDF_PART_FLAG_OVERWRITABLE 0x0080
	40
15aebd28 CH	41	#define UDF_MAX_BLOCK_LOADED 8
	42
	43	#define UDF_TYPE1_MAP15 0x1511U
	44	#define UDF_VIRTUAL_MAP15 0x1512U
	45	#define UDF_VIRTUAL_MAP20 0x2012U
	46	#define UDF_SPARABLE_MAP15 0x1522U
bfb257a5	47	#define UDF_METADATA_MAP25 0x2511U
15aebd28	48
faa17292	49	#define UDF_INVALID_MODE ((umode_t)-1)
87bc730c	50
ed47a7d0 JK	51	#define MF_DUPLICATE_MD 0x01
	52	#define MF_MIRROR_FE_LOADED 0x02
	53
bfb257a5 JK	54	struct udf_meta_data {
	55	__u32 s_meta_file_loc;
	56	__u32 s_mirror_file_loc;
	57	__u32 s_bitmap_file_loc;
	58	__u32 s_alloc_unit_size;
	59	__u16 s_align_unit_size;
7888824b AT	60	/*
	61	* Partition Reference Number of the associated physical / sparable
	62	* partition
	63	*/
	64	__u16 s_phys_partition_ref;
ed47a7d0	65	int s_flags;
bfb257a5 JK	66	struct inode *s_metadata_fe;
	67	struct inode *s_mirror_fe;
	68	struct inode *s_bitmap_fe;
	69	};
	70
15aebd28 CH	71	struct udf_sparing_data {
	72	__u16 s_packet_len;
	73	struct buffer_head *s_spar_map[4];
	74	};
	75
	76	struct udf_virtual_data {
	77	__u32 s_num_entries;
	78	__u16 s_start_offset;
	79	};
	80
	81	struct udf_bitmap {
15aebd28	82	__u32 s_extPosition;
89b1f39e	83	int s_nr_groups;
3fc13166	84	struct buffer_head *s_block_bitmap[];
15aebd28 CH	85	};
	86
	87	struct udf_part_map {
	88	union {
	89	struct udf_bitmap *s_bitmap;
	90	struct inode *s_table;
	91	} s_uspace;
15aebd28 CH	92	__u32 s_partition_root;
	93	__u32 s_partition_len;
	94	__u16 s_partition_type;
	95	__u16 s_partition_num;
	96	union {
	97	struct udf_sparing_data s_sparing;
	98	struct udf_virtual_data s_virtual;
bfb257a5	99	struct udf_meta_data s_metadata;
15aebd28 CH	100	} s_type_specific;
	101	__u32 (s_partition_func)(struct super_block , __u32, __u16, __u32);
	102	__u16 s_volumeseqnum;
	103	__u16 s_partition_flags;
	104	};
	105
	106	#pragma pack()
	107
	108	struct udf_sb_info {
	109	struct udf_part_map *s_partmaps;
	110	__u8 s_volume_ident[32];
	111
	112	/* Overall info */
	113	__u16 s_partitions;
	114	__u16 s_partition;
	115
	116	/* Sector headers */
	117	__s32 s_session;
40346005	118	__u32 s_anchor;
15aebd28 CH	119	__u32 s_last_block;
	120
	121	struct buffer_head *s_lvid_bh;
	122
	123	/* Default permissions */
faa17292	124	umode_t s_umask;
c2ba138a EB	125	kgid_t s_gid;
c2ba138a EB	126	kuid_t s_uid;
faa17292 AV	127	umode_t s_fmode;
faa17292 AV	128	umode_t s_dmode;
c03cad24 JK	129	/* Lock protecting consistency of above permission settings */
c03cad24 JK	130	rwlock_t s_cred_lock;
15aebd28 CH	131
15aebd28 CH	132	/* Root Info */
c3b9cecd	133	struct timespec64 s_record_time;
15aebd28 CH	134
	135	/* Fileset Info */
	136	__u16 s_serial_number;
	137
	138	/* highest UDF revision we have recorded to this media */
	139	__u16 s_udfrev;
	140
	141	/* Miscellaneous flags */
f2a6cc1f	142	unsigned long s_flags;
15aebd28 CH	143
	144	/* Encoding info */
	145	struct nls_table *s_nls_map;
	146
	147	/* VAT inode */
	148	struct inode *s_vat_inode;
	149
	150	struct mutex s_alloc_mutex;
146bca72 JK	151	/* Protected by s_alloc_mutex */
146bca72 JK	152	unsigned int s_lvid_dirty;
15aebd28 CH	153	};
15aebd28 CH	154
1da177e4 LT	155	static inline struct udf_sb_info UDF_SB(struct super_block sb)
	156	{
	157	return sb->s_fs_info;
	158	}
	159
69d75671	160	struct logicalVolIntegrityDescImpUse udf_sb_lvidiu(struct super_block sb);
1da177e4	161
883cb9d1 MS	162	int udf_compute_nr_groups(struct super_block *sb, u32 partition);
883cb9d1 MS	163
f2a6cc1f JK	164	static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
	165	{
	166	return test_bit(flag, &UDF_SB(sb)->s_flags);
	167	}
	168
	169	static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
	170	{
	171	set_bit(flag, &UDF_SB(sb)->s_flags);
	172	}
	173
	174	static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
	175	{
	176	clear_bit(flag, &UDF_SB(sb)->s_flags);
	177	}
1da177e4	178
28de7948	179	#endif /* __LINUX_UDF_SB_H */