261 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef __UDF_DECL_H3#define __UDF_DECL_H4 5#define pr_fmt(fmt) "UDF-fs: " fmt6 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 820 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_EXTENT_LENGTH_MASK 0x3FFFFFFF38#define UDF_EXTENT_FLAG_MASK 0xC000000039 40#define UDF_INVALID_ID ((uint32_t)-1)41 42#define UDF_NAME_PAD 443#define UDF_NAME_LEN 25444#define UDF_NAME_LEN_CS0 25545 46static inline size_t udf_file_entry_alloc_offset(struct inode *inode)47{48 struct udf_inode_info *iinfo = UDF_I(inode);49 if (iinfo->i_use)50 return sizeof(struct unallocSpaceEntry);51 else if (iinfo->i_efe)52 return sizeof(struct extendedFileEntry) + iinfo->i_lenEAttr;53 else54 return sizeof(struct fileEntry) + iinfo->i_lenEAttr;55}56 57static inline size_t udf_ext0_offset(struct inode *inode)58{59 if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)60 return udf_file_entry_alloc_offset(inode);61 else62 return 0;63}64 65/* computes tag checksum */66u8 udf_tag_checksum(const struct tag *t);67 68typedef uint32_t udf_pblk_t;69 70struct dentry;71struct inode;72struct task_struct;73struct buffer_head;74struct super_block;75 76extern const struct export_operations udf_export_ops;77extern const struct inode_operations udf_dir_inode_operations;78extern const struct file_operations udf_dir_operations;79extern const struct inode_operations udf_file_inode_operations;80extern const struct file_operations udf_file_operations;81extern const struct inode_operations udf_symlink_inode_operations;82extern const struct address_space_operations udf_aops;83extern const struct address_space_operations udf_symlink_aops;84 85struct udf_fileident_iter {86 struct inode *dir; /* Directory we are working with */87 loff_t pos; /* Logical position in a dir */88 struct buffer_head *bh[2]; /* Buffer containing 'pos' and possibly89 * next buffer if entry straddles90 * blocks */91 struct kernel_lb_addr eloc; /* Start of extent containing 'pos' */92 uint32_t elen; /* Length of extent containing 'pos' */93 sector_t loffset; /* Block offset of 'pos' within above94 * extent */95 struct extent_position epos; /* Position after the above extent */96 struct fileIdentDesc fi; /* Copied directory entry */97 uint8_t *name; /* Pointer to entry name */98 uint8_t *namebuf; /* Storage for entry name in case99 * the name is split between two blocks100 */101};102 103struct udf_vds_record {104 uint32_t block;105 uint32_t volDescSeqNum;106};107 108struct generic_desc {109 struct tag descTag;110 __le32 volDescSeqNum;111};112 113 114/* super.c */115 116static inline void udf_updated_lvid(struct super_block *sb)117{118 struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh;119 120 BUG_ON(!bh);121 WARN_ON_ONCE(((struct logicalVolIntegrityDesc *)122 bh->b_data)->integrityType !=123 cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN));124 UDF_SB(sb)->s_lvid_dirty = 1;125}126extern u64 lvid_get_unique_id(struct super_block *sb);127struct inode *udf_find_metadata_inode_efe(struct super_block *sb,128 u32 meta_file_loc, u32 partition_num);129 130/* namei.c */131static inline unsigned int udf_dir_entry_len(struct fileIdentDesc *cfi)132{133 return ALIGN(sizeof(struct fileIdentDesc) +134 le16_to_cpu(cfi->lengthOfImpUse) + cfi->lengthFileIdent,135 UDF_NAME_PAD);136}137 138/* file.c */139extern long udf_ioctl(struct file *, unsigned int, unsigned long);140 141/* inode.c */142extern struct inode *__udf_iget(struct super_block *, struct kernel_lb_addr *,143 bool hidden_inode);144static inline struct inode *udf_iget_special(struct super_block *sb,145 struct kernel_lb_addr *ino)146{147 return __udf_iget(sb, ino, true);148}149static inline struct inode *udf_iget(struct super_block *sb,150 struct kernel_lb_addr *ino)151{152 return __udf_iget(sb, ino, false);153}154extern int udf_expand_file_adinicb(struct inode *);155extern struct buffer_head *udf_bread(struct inode *inode, udf_pblk_t block,156 int create, int *err);157extern int udf_setsize(struct inode *, loff_t);158extern void udf_evict_inode(struct inode *);159extern int udf_write_inode(struct inode *, struct writeback_control *wbc);160extern int inode_bmap(struct inode *inode, sector_t block,161 struct extent_position *pos, struct kernel_lb_addr *eloc,162 uint32_t *elen, sector_t *offset, int8_t *etype);163int udf_get_block(struct inode *, sector_t, struct buffer_head *, int);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 int udf_next_aext(struct inode *inode, struct extent_position *epos,174 struct kernel_lb_addr *eloc, uint32_t *elen,175 int8_t *etype, int inc);176extern int udf_current_aext(struct inode *inode, struct extent_position *epos,177 struct kernel_lb_addr *eloc, uint32_t *elen,178 int8_t *etype, int inc);179extern void udf_update_extra_perms(struct inode *inode, umode_t mode);180 181/* misc.c */182extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,183 uint32_t, uint8_t);184extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,185 uint8_t);186extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,187 uint32_t, uint16_t *);188extern struct buffer_head *udf_read_ptagged(struct super_block *,189 struct kernel_lb_addr *, uint32_t,190 uint16_t *);191extern void udf_update_tag(char *, int);192extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);193 194/* lowlevel.c */195extern unsigned int udf_get_last_session(struct super_block *);196udf_pblk_t udf_get_last_block(struct super_block *);197 198/* partition.c */199extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,200 uint32_t);201extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,202 uint32_t);203extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,204 uint32_t);205extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,206 uint32_t);207extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,208 uint32_t);209extern int udf_relocate_blocks(struct super_block *, long, long *);210 211static inline uint32_t212udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,213 uint32_t offset)214{215 return udf_get_pblock(sb, loc->logicalBlockNum,216 loc->partitionReferenceNum, offset);217}218 219/* unicode.c */220extern int udf_get_filename(struct super_block *, const uint8_t *, int,221 uint8_t *, int);222extern int udf_put_filename(struct super_block *, const uint8_t *, int,223 uint8_t *, int);224extern int udf_dstrCS0toChar(struct super_block *, uint8_t *, int,225 const uint8_t *, int);226 227/* ialloc.c */228extern void udf_free_inode(struct inode *);229extern struct inode *udf_new_inode(struct inode *, umode_t);230 231/* truncate.c */232extern void udf_truncate_tail_extent(struct inode *);233extern void udf_discard_prealloc(struct inode *);234extern int udf_truncate_extents(struct inode *);235 236/* balloc.c */237extern void udf_free_blocks(struct super_block *, struct inode *,238 struct kernel_lb_addr *, uint32_t, uint32_t);239extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,240 uint32_t, uint32_t);241extern udf_pblk_t udf_new_block(struct super_block *sb, struct inode *inode,242 uint16_t partition, uint32_t goal, int *err);243 244/* directory.c */245int udf_fiiter_init(struct udf_fileident_iter *iter, struct inode *dir,246 loff_t pos);247int udf_fiiter_advance(struct udf_fileident_iter *iter);248void udf_fiiter_release(struct udf_fileident_iter *iter);249void udf_fiiter_write_fi(struct udf_fileident_iter *iter, uint8_t *impuse);250void udf_fiiter_update_elen(struct udf_fileident_iter *iter, uint32_t new_elen);251int udf_fiiter_append_blk(struct udf_fileident_iter *iter);252extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);253extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);254 255/* udftime.c */256extern void udf_disk_stamp_to_time(struct timespec64 *dest,257 struct timestamp src);258extern void udf_time_to_disk_stamp(struct timestamp *dest, struct timespec64 src);259 260#endif /* __UDF_DECL_H */261