cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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udf_sb.h (4185B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __LINUX_UDF_SB_H
      3#define __LINUX_UDF_SB_H
      4
      5#include <linux/mutex.h>
      6#include <linux/bitops.h>
      7#include <linux/magic.h>
      8
      9#define UDF_MAX_READ_VERSION		0x0250
     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
     23#define UDF_FLAG_UID_FORGET     11    /* save -1 for uid to disk */
     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
     30#define UDF_FLAG_INCONSISTENT	18
     31#define UDF_FLAG_RW_INCOMPAT	19	/* Set when we find RW incompatible
     32					 * feature */
     33
     34#define UDF_PART_FLAG_UNALLOC_BITMAP	0x0001
     35#define UDF_PART_FLAG_UNALLOC_TABLE	0x0002
     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
     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
     47#define UDF_METADATA_MAP25		0x2511U
     48
     49#define UDF_INVALID_MODE		((umode_t)-1)
     50
     51#define MF_DUPLICATE_MD		0x01
     52#define MF_MIRROR_FE_LOADED	0x02
     53
     54struct 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;
     60	/*
     61	 * Partition Reference Number of the associated physical / sparable
     62	 * partition
     63	 */
     64	__u16   s_phys_partition_ref;
     65	int	s_flags;
     66	struct inode *s_metadata_fe;
     67	struct inode *s_mirror_fe;
     68	struct inode *s_bitmap_fe;
     69};
     70
     71struct udf_sparing_data {
     72	__u16	s_packet_len;
     73	struct buffer_head *s_spar_map[4];
     74};
     75
     76struct udf_virtual_data {
     77	__u32	s_num_entries;
     78	__u16	s_start_offset;
     79};
     80
     81struct udf_bitmap {
     82	__u32			s_extPosition;
     83	int			s_nr_groups;
     84	struct buffer_head	*s_block_bitmap[];
     85};
     86
     87struct udf_part_map {
     88	union {
     89		struct udf_bitmap	*s_bitmap;
     90		struct inode		*s_table;
     91	} s_uspace;
     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;
     99		struct udf_meta_data s_metadata;
    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
    108struct 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;
    118	__u32			s_anchor;
    119	__u32			s_last_block;
    120
    121	struct buffer_head	*s_lvid_bh;
    122
    123	/* Default permissions */
    124	umode_t			s_umask;
    125	kgid_t			s_gid;
    126	kuid_t			s_uid;
    127	umode_t			s_fmode;
    128	umode_t			s_dmode;
    129	/* Lock protecting consistency of above permission settings */
    130	rwlock_t		s_cred_lock;
    131
    132	/* Root Info */
    133	struct timespec64	s_record_time;
    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 */
    142	unsigned long		s_flags;
    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;
    151	/* Protected by s_alloc_mutex */
    152	unsigned int		s_lvid_dirty;
    153};
    154
    155static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
    156{
    157	return sb->s_fs_info;
    158}
    159
    160struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb);
    161
    162int udf_compute_nr_groups(struct super_block *sb, u32 partition);
    163
    164static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
    165{
    166	return test_bit(flag, &UDF_SB(sb)->s_flags);
    167}
    168
    169static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
    170{
    171	set_bit(flag, &UDF_SB(sb)->s_flags);
    172}
    173
    174static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
    175{
    176	clear_bit(flag, &UDF_SB(sb)->s_flags);
    177}
    178
    179#endif /* __LINUX_UDF_SB_H */