udfdecl.h (9105B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef __UDF_DECL_H 3#define __UDF_DECL_H 4 5#define pr_fmt(fmt) "UDF-fs: " fmt 6 7#include "ecma_167.h" 8#include "osta_udf.h" 9 10#include <linux/fs.h> 11#include <linux/types.h> 12#include <linux/buffer_head.h> 13#include <linux/udf_fs_i.h> 14 15#include "udf_sb.h" 16#include "udfend.h" 17#include "udf_i.h" 18 19#define UDF_DEFAULT_PREALLOC_BLOCKS 8 20 21extern __printf(3, 4) void _udf_err(struct super_block *sb, 22 const char *function, const char *fmt, ...); 23#define udf_err(sb, fmt, ...) \ 24 _udf_err(sb, __func__, fmt, ##__VA_ARGS__) 25 26extern __printf(3, 4) void _udf_warn(struct super_block *sb, 27 const char *function, const char *fmt, ...); 28#define udf_warn(sb, fmt, ...) \ 29 _udf_warn(sb, __func__, fmt, ##__VA_ARGS__) 30 31#define udf_info(fmt, ...) \ 32 pr_info("INFO " fmt, ##__VA_ARGS__) 33 34#define udf_debug(fmt, ...) \ 35 pr_debug("%s:%d:%s: " fmt, __FILE__, __LINE__, __func__, ##__VA_ARGS__) 36 37#define udf_fixed_to_variable(x) ( ( ( (x) >> 5 ) * 39 ) + ( (x) & 0x0000001F ) ) 38#define udf_variable_to_fixed(x) ( ( ( (x) / 39 ) << 5 ) + ( (x) % 39 ) ) 39 40#define UDF_EXTENT_LENGTH_MASK 0x3FFFFFFF 41#define UDF_EXTENT_FLAG_MASK 0xC0000000 42 43#define UDF_INVALID_ID ((uint32_t)-1) 44 45#define UDF_NAME_PAD 4 46#define UDF_NAME_LEN 254 47#define UDF_NAME_LEN_CS0 255 48 49static inline size_t udf_file_entry_alloc_offset(struct inode *inode) 50{ 51 struct udf_inode_info *iinfo = UDF_I(inode); 52 if (iinfo->i_use) 53 return sizeof(struct unallocSpaceEntry); 54 else if (iinfo->i_efe) 55 return sizeof(struct extendedFileEntry) + iinfo->i_lenEAttr; 56 else 57 return sizeof(struct fileEntry) + iinfo->i_lenEAttr; 58} 59 60static inline size_t udf_ext0_offset(struct inode *inode) 61{ 62 if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) 63 return udf_file_entry_alloc_offset(inode); 64 else 65 return 0; 66} 67 68/* computes tag checksum */ 69u8 udf_tag_checksum(const struct tag *t); 70 71typedef uint32_t udf_pblk_t; 72 73struct dentry; 74struct inode; 75struct task_struct; 76struct buffer_head; 77struct super_block; 78 79extern const struct export_operations udf_export_ops; 80extern const struct inode_operations udf_dir_inode_operations; 81extern const struct file_operations udf_dir_operations; 82extern const struct inode_operations udf_file_inode_operations; 83extern const struct file_operations udf_file_operations; 84extern const struct inode_operations udf_symlink_inode_operations; 85extern const struct address_space_operations udf_aops; 86extern const struct address_space_operations udf_adinicb_aops; 87extern const struct address_space_operations udf_symlink_aops; 88 89struct udf_fileident_bh { 90 struct buffer_head *sbh; 91 struct buffer_head *ebh; 92 int soffset; 93 int eoffset; 94}; 95 96struct udf_vds_record { 97 uint32_t block; 98 uint32_t volDescSeqNum; 99}; 100 101struct generic_desc { 102 struct tag descTag; 103 __le32 volDescSeqNum; 104}; 105 106 107/* super.c */ 108 109static inline void udf_updated_lvid(struct super_block *sb) 110{ 111 struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh; 112 113 BUG_ON(!bh); 114 WARN_ON_ONCE(((struct logicalVolIntegrityDesc *) 115 bh->b_data)->integrityType != 116 cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN)); 117 UDF_SB(sb)->s_lvid_dirty = 1; 118} 119extern u64 lvid_get_unique_id(struct super_block *sb); 120struct inode *udf_find_metadata_inode_efe(struct super_block *sb, 121 u32 meta_file_loc, u32 partition_num); 122 123/* namei.c */ 124extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *, 125 struct fileIdentDesc *, struct udf_fileident_bh *, 126 uint8_t *, uint8_t *); 127static inline unsigned int udf_dir_entry_len(struct fileIdentDesc *cfi) 128{ 129 return ALIGN(sizeof(struct fileIdentDesc) + 130 le16_to_cpu(cfi->lengthOfImpUse) + cfi->lengthFileIdent, 131 UDF_NAME_PAD); 132} 133static inline uint8_t *udf_get_fi_ident(struct fileIdentDesc *fi) 134{ 135 return ((uint8_t *)(fi + 1)) + le16_to_cpu(fi->lengthOfImpUse); 136} 137 138/* file.c */ 139extern long udf_ioctl(struct file *, unsigned int, unsigned long); 140/* inode.c */ 141extern struct inode *__udf_iget(struct super_block *, struct kernel_lb_addr *, 142 bool hidden_inode); 143static inline struct inode *udf_iget_special(struct super_block *sb, 144 struct kernel_lb_addr *ino) 145{ 146 return __udf_iget(sb, ino, true); 147} 148static inline struct inode *udf_iget(struct super_block *sb, 149 struct kernel_lb_addr *ino) 150{ 151 return __udf_iget(sb, ino, false); 152} 153extern int udf_expand_file_adinicb(struct inode *); 154extern struct buffer_head *udf_expand_dir_adinicb(struct inode *inode, 155 udf_pblk_t *block, int *err); 156extern struct buffer_head *udf_bread(struct inode *inode, udf_pblk_t block, 157 int create, int *err); 158extern int udf_setsize(struct inode *, loff_t); 159extern void udf_evict_inode(struct inode *); 160extern int udf_write_inode(struct inode *, struct writeback_control *wbc); 161extern udf_pblk_t udf_block_map(struct inode *inode, sector_t block); 162extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *, 163 struct kernel_lb_addr *, uint32_t *, sector_t *); 164extern int udf_setup_indirect_aext(struct inode *inode, udf_pblk_t block, 165 struct extent_position *epos); 166extern int __udf_add_aext(struct inode *inode, struct extent_position *epos, 167 struct kernel_lb_addr *eloc, uint32_t elen, int inc); 168extern int udf_add_aext(struct inode *, struct extent_position *, 169 struct kernel_lb_addr *, uint32_t, int); 170extern void udf_write_aext(struct inode *, struct extent_position *, 171 struct kernel_lb_addr *, uint32_t, int); 172extern int8_t udf_delete_aext(struct inode *, struct extent_position); 173extern int8_t udf_next_aext(struct inode *, struct extent_position *, 174 struct kernel_lb_addr *, uint32_t *, int); 175extern int8_t udf_current_aext(struct inode *, struct extent_position *, 176 struct kernel_lb_addr *, uint32_t *, int); 177extern void udf_update_extra_perms(struct inode *inode, umode_t mode); 178 179/* misc.c */ 180extern struct buffer_head *udf_tgetblk(struct super_block *sb, 181 udf_pblk_t block); 182extern struct buffer_head *udf_tread(struct super_block *sb, udf_pblk_t block); 183extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t, 184 uint32_t, uint8_t); 185extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t, 186 uint8_t); 187extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t, 188 uint32_t, uint16_t *); 189extern struct buffer_head *udf_read_ptagged(struct super_block *, 190 struct kernel_lb_addr *, uint32_t, 191 uint16_t *); 192extern void udf_update_tag(char *, int); 193extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int); 194 195/* lowlevel.c */ 196extern unsigned int udf_get_last_session(struct super_block *); 197extern unsigned long udf_get_last_block(struct super_block *); 198 199/* partition.c */ 200extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t, 201 uint32_t); 202extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t, 203 uint32_t); 204extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t, 205 uint32_t); 206extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t, 207 uint32_t); 208extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t, 209 uint32_t); 210extern int udf_relocate_blocks(struct super_block *, long, long *); 211 212static inline uint32_t 213udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc, 214 uint32_t offset) 215{ 216 return udf_get_pblock(sb, loc->logicalBlockNum, 217 loc->partitionReferenceNum, offset); 218} 219 220/* unicode.c */ 221extern int udf_get_filename(struct super_block *, const uint8_t *, int, 222 uint8_t *, int); 223extern int udf_put_filename(struct super_block *, const uint8_t *, int, 224 uint8_t *, int); 225extern int udf_dstrCS0toChar(struct super_block *, uint8_t *, int, 226 const uint8_t *, int); 227 228/* ialloc.c */ 229extern void udf_free_inode(struct inode *); 230extern struct inode *udf_new_inode(struct inode *, umode_t); 231 232/* truncate.c */ 233extern void udf_truncate_tail_extent(struct inode *); 234extern void udf_discard_prealloc(struct inode *); 235extern int udf_truncate_extents(struct inode *); 236 237/* balloc.c */ 238extern void udf_free_blocks(struct super_block *, struct inode *, 239 struct kernel_lb_addr *, uint32_t, uint32_t); 240extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t, 241 uint32_t, uint32_t); 242extern udf_pblk_t udf_new_block(struct super_block *sb, struct inode *inode, 243 uint16_t partition, uint32_t goal, int *err); 244 245/* directory.c */ 246extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *, 247 struct udf_fileident_bh *, 248 struct fileIdentDesc *, 249 struct extent_position *, 250 struct kernel_lb_addr *, uint32_t *, 251 sector_t *); 252extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize, 253 int *offset); 254extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int); 255extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int); 256 257/* udftime.c */ 258extern void udf_disk_stamp_to_time(struct timespec64 *dest, 259 struct timestamp src); 260extern void udf_time_to_disk_stamp(struct timestamp *dest, struct timespec64 src); 261 262#endif /* __UDF_DECL_H */