udf_sb.h 4.37 KB
Newer Older
1
/* SPDX-License-Identifier: GPL-2.0 */
Linus Torvalds's avatar
Linus Torvalds committed
2 3 4
#ifndef __LINUX_UDF_SB_H
#define __LINUX_UDF_SB_H

5
#include <linux/mutex.h>
6
#include <linux/bitops.h>
7
#include <linux/magic.h>
Linus Torvalds's avatar
Linus Torvalds committed
8

9
#define UDF_MAX_READ_VERSION		0x0250
Linus Torvalds's avatar
Linus Torvalds committed
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
#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
25 26
#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 */
27 28
#define UDF_FLAG_GID_FORGET     13
#define UDF_FLAG_GID_IGNORE     14
29 30
#define UDF_FLAG_UID_SET	15
#define UDF_FLAG_GID_SET	16
Miklos Szeredi's avatar
Miklos Szeredi committed
31 32
#define UDF_FLAG_SESSION_SET	17
#define UDF_FLAG_LASTBLOCK_SET	18
33
#define UDF_FLAG_BLOCKSIZE_SET	19
Linus Torvalds's avatar
Linus Torvalds committed
34 35 36 37 38 39 40 41 42 43

#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

44 45 46 47 48 49
#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
50
#define UDF_METADATA_MAP25		0x2511U
51

Al Viro's avatar
Al Viro committed
52
#define UDF_INVALID_MODE		((umode_t)-1)
53

54 55
#pragma pack(1) /* XXX(hch): Why?  This file just defines in-core structures */

56 57 58
#define MF_DUPLICATE_MD		0x01
#define MF_MIRROR_FE_LOADED	0x02

59 60 61 62 63 64
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;
65 66 67 68 69
	/*
	 * Partition Reference Number of the associated physical / sparable
	 * partition
	 */
	__u16   s_phys_partition_ref;
70
	int	s_flags;
71 72 73 74 75
	struct inode *s_metadata_fe;
	struct inode *s_mirror_fe;
	struct inode *s_bitmap_fe;
};

76 77 78 79 80 81 82 83 84 85 86 87
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;
88
	int			s_nr_groups;
89
	struct buffer_head 	*s_block_bitmap[0];
90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107
};

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;
108
		struct udf_meta_data s_metadata;
109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126
	} 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;
127
	__u32			s_anchor;
128 129 130 131 132
	__u32			s_last_block;

	struct buffer_head	*s_lvid_bh;

	/* Default permissions */
Al Viro's avatar
Al Viro committed
133
	umode_t			s_umask;
134 135
	kgid_t			s_gid;
	kuid_t			s_uid;
Al Viro's avatar
Al Viro committed
136 137
	umode_t			s_fmode;
	umode_t			s_dmode;
138 139
	/* Lock protecting consistency of above permission settings */
	rwlock_t		s_cred_lock;
140 141 142 143 144 145 146 147 148 149 150

	/* 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 */
151
	unsigned long		s_flags;
152 153 154 155 156 157 158 159

	/* Encoding info */
	struct nls_table	*s_nls_map;

	/* VAT inode */
	struct inode		*s_vat_inode;

	struct mutex		s_alloc_mutex;
160 161
	/* Protected by s_alloc_mutex */
	unsigned int		s_lvid_dirty;
162 163
};

Linus Torvalds's avatar
Linus Torvalds committed
164 165 166 167 168
static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
{
	return sb->s_fs_info;
}

Jan Kara's avatar
Jan Kara committed
169
struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb);
Linus Torvalds's avatar
Linus Torvalds committed
170

171 172
int udf_compute_nr_groups(struct super_block *sb, u32 partition);

173 174 175 176 177 178 179 180 181 182 183 184 185 186
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);
}
Linus Torvalds's avatar
Linus Torvalds committed
187

188
#endif /* __LINUX_UDF_SB_H */