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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_EXTENT_LENGTH_MASK 0x3FFFFFFF
38#define UDF_EXTENT_FLAG_MASK 0xC0000000
39
40#define UDF_INVALID_ID ((uint32_t)-1)
41
42#define UDF_NAME_PAD 4
43#define UDF_NAME_LEN 254
44#define UDF_NAME_LEN_CS0 255
45
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 else
54 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 else
62 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 possibly
89 * next buffer if entry straddles
90 * 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 above
94 * 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 case
99 * the name is split between two blocks
100 */
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);
160int udf_sync_inode_metadata(struct inode *, struct writeback_control *wbc);
161extern int inode_bmap(struct inode *inode, sector_t block,
162 struct extent_position *pos, struct kernel_lb_addr *eloc,
163 uint32_t *elen, sector_t *offset, int8_t *etype);
164int udf_get_block(struct inode *, sector_t, struct buffer_head *, int);
165extern int udf_setup_indirect_aext(struct inode *inode, udf_pblk_t block,
166 struct extent_position *epos);
167extern int __udf_add_aext(struct inode *inode, struct extent_position *epos,
168 struct kernel_lb_addr *eloc, uint32_t elen, int inc);
169extern int udf_add_aext(struct inode *, struct extent_position *,
170 struct kernel_lb_addr *, uint32_t, int);
171extern void udf_write_aext(struct inode *, struct extent_position *,
172 struct kernel_lb_addr *, uint32_t, int);
173extern int8_t udf_delete_aext(struct inode *, struct extent_position,
174 struct kernel_lb_addr *);
175extern int udf_next_aext(struct inode *inode, struct extent_position *epos,
176 struct kernel_lb_addr *eloc, uint32_t *elen,
177 int8_t *etype, int inc);
178extern int udf_current_aext(struct inode *inode, struct extent_position *epos,
179 struct kernel_lb_addr *eloc, uint32_t *elen,
180 int8_t *etype, int inc);
181extern void udf_update_extra_perms(struct inode *inode, umode_t mode);
182
183/* misc.c */
184extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,
185 uint32_t, uint8_t);
186extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
187 uint8_t);
188extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
189 uint32_t, uint16_t *);
190extern struct buffer_head *udf_read_ptagged(struct super_block *,
191 struct kernel_lb_addr *, uint32_t,
192 uint16_t *);
193extern void udf_update_tag(char *, int);
194extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);
195
196/* lowlevel.c */
197extern unsigned int udf_get_last_session(struct super_block *);
198udf_pblk_t udf_get_last_block(struct super_block *);
199
200/* partition.c */
201extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,
202 uint32_t);
203extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,
204 uint32_t);
205extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
206 uint32_t);
207extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
208 uint32_t);
209extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
210 uint32_t);
211extern int udf_relocate_blocks(struct super_block *, long, long *);
212
213static inline uint32_t
214udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
215 uint32_t offset)
216{
217 return udf_get_pblock(sb, loc->logicalBlockNum,
218 loc->partitionReferenceNum, offset);
219}
220
221/* unicode.c */
222extern int udf_get_filename(struct super_block *, const uint8_t *, int,
223 uint8_t *, int);
224extern int udf_put_filename(struct super_block *, const uint8_t *, int,
225 uint8_t *, int);
226extern int udf_dstrCS0toChar(struct super_block *, uint8_t *, int,
227 const uint8_t *, int);
228
229/* ialloc.c */
230extern void udf_free_inode(struct inode *);
231extern struct inode *udf_new_inode(struct inode *, umode_t);
232
233/* truncate.c */
234extern void udf_truncate_tail_extent(struct inode *);
235extern void udf_discard_prealloc(struct inode *);
236extern int udf_truncate_extents(struct inode *);
237
238/* balloc.c */
239extern void udf_free_blocks(struct super_block *, struct inode *,
240 struct kernel_lb_addr *, uint32_t, uint32_t);
241extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
242 uint32_t, uint32_t);
243extern udf_pblk_t udf_new_block(struct super_block *sb, struct inode *inode,
244 uint16_t partition, uint32_t goal, int *err);
245
246/* directory.c */
247int udf_fiiter_init(struct udf_fileident_iter *iter, struct inode *dir,
248 loff_t pos);
249int udf_fiiter_advance(struct udf_fileident_iter *iter);
250void udf_fiiter_release(struct udf_fileident_iter *iter);
251void udf_fiiter_write_fi(struct udf_fileident_iter *iter, uint8_t *impuse);
252void udf_fiiter_update_elen(struct udf_fileident_iter *iter, uint32_t new_elen);
253int udf_fiiter_append_blk(struct udf_fileident_iter *iter);
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 */