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/* 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>
/*
* Even UDF 2.6 media should have version <= 0x250 but apparently there are
* some broken filesystems with version set to 0x260. Accommodate those.
*/
#define UDF_MAX_READ_VERSION 0x0260
#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 */
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