mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 13:43:55 +08:00
c03cad241a
Superblock carries credentials (uid, gid, etc.) which are used as default values in __udf_read_inode() when media does not provide these. These credentials can change during remount so we protect them by a rwlock so that each inode gets a consistent set of credentials. Signed-off-by: Jan Kara <jack@suse.cz>
183 lines
4.2 KiB
C
183 lines
4.2 KiB
C
#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 */
|