/* 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_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 #define EFSCORRUPTED EUCLEAN 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 */