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review.trustedfirmware.org / hafnium / third_party / linux / 3a0ad55d848b50499b68d7141d4eca997fce28ef / . / fs / udf / udfdecl.h
blob: ee246769dee4a2c54f31b56c5237f77f7db3a040 [file] [log] [blame]
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]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#undef UDFFS_DEBUG
35
36#ifdef UDFFS_DEBUG
37#define udf_debug(fmt, ...) \
38 printk(KERN_DEBUG pr_fmt("%s:%d:%s: " fmt), \
39 __FILE__, __LINE__, __func__, ##__VA_ARGS__)
40#else
41#define udf_debug(fmt, ...) \
42 no_printk(fmt, ##__VA_ARGS__)
43#endif
44
45#define udf_fixed_to_variable(x) ( ( ( (x) >> 5 ) * 39 ) + ( (x) & 0x0000001F ) )
46#define udf_variable_to_fixed(x) ( ( ( (x) / 39 ) << 5 ) + ( (x) % 39 ) )
47
48#define UDF_EXTENT_LENGTH_MASK 0x3FFFFFFF
49#define UDF_EXTENT_FLAG_MASK 0xC0000000
50
51#define UDF_INVALID_ID ((uint32_t)-1)
52
53#define UDF_NAME_PAD 4
54#define UDF_NAME_LEN 254
55#define UDF_NAME_LEN_CS0 255
56
57static inline size_t udf_file_entry_alloc_offset(struct inode *inode)
58{
59 struct udf_inode_info *iinfo = UDF_I(inode);
60 if (iinfo->i_use)
61 return sizeof(struct unallocSpaceEntry);
62 else if (iinfo->i_efe)
63 return sizeof(struct extendedFileEntry) + iinfo->i_lenEAttr;
64 else
65 return sizeof(struct fileEntry) + iinfo->i_lenEAttr;
66}
67
68static inline size_t udf_ext0_offset(struct inode *inode)
69{
70 if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
71 return udf_file_entry_alloc_offset(inode);
72 else
73 return 0;
74}
75
76/* computes tag checksum */
77u8 udf_tag_checksum(const struct tag *t);
78
79typedef uint32_t udf_pblk_t;
80
81struct dentry;
82struct inode;
83struct task_struct;
84struct buffer_head;
85struct super_block;
86
87extern const struct export_operations udf_export_ops;
88extern const struct inode_operations udf_dir_inode_operations;
89extern const struct file_operations udf_dir_operations;
90extern const struct inode_operations udf_file_inode_operations;
91extern const struct file_operations udf_file_operations;
92extern const struct inode_operations udf_symlink_inode_operations;
93extern const struct address_space_operations udf_aops;
94extern const struct address_space_operations udf_adinicb_aops;
95extern const struct address_space_operations udf_symlink_aops;
96
97struct udf_fileident_bh {
98 struct buffer_head *sbh;
99 struct buffer_head *ebh;
100 int soffset;
101 int eoffset;
102};
103
104struct udf_vds_record {
105 uint32_t block;
106 uint32_t volDescSeqNum;
107};
108
109struct generic_desc {
110 struct tag descTag;
111 __le32 volDescSeqNum;
112};
113
114
115/* super.c */
116
117static inline void udf_updated_lvid(struct super_block *sb)
118{
119 struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh;
120
121 BUG_ON(!bh);
122 WARN_ON_ONCE(((struct logicalVolIntegrityDesc *)
123 bh->b_data)->integrityType !=
124 cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN));
125 UDF_SB(sb)->s_lvid_dirty = 1;
126}
127extern u64 lvid_get_unique_id(struct super_block *sb);
128struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
129 u32 meta_file_loc, u32 partition_num);
130
131/* namei.c */
132extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
133 struct fileIdentDesc *, struct udf_fileident_bh *,
134 uint8_t *, uint8_t *);
135static inline unsigned int udf_dir_entry_len(struct fileIdentDesc *cfi)
136{
137 return ALIGN(sizeof(struct fileIdentDesc) +
138 le16_to_cpu(cfi->lengthOfImpUse) + cfi->lengthFileIdent,
139 UDF_NAME_PAD);
140}
141
142/* file.c */
143extern long udf_ioctl(struct file *, unsigned int, unsigned long);
144/* inode.c */
145extern struct inode *__udf_iget(struct super_block *, struct kernel_lb_addr *,
146 bool hidden_inode);
147static inline struct inode *udf_iget_special(struct super_block *sb,
148 struct kernel_lb_addr *ino)
149{
150 return __udf_iget(sb, ino, true);
151}
152static inline struct inode *udf_iget(struct super_block *sb,
153 struct kernel_lb_addr *ino)
154{
155 return __udf_iget(sb, ino, false);
156}
157extern int udf_expand_file_adinicb(struct inode *);
158extern struct buffer_head *udf_expand_dir_adinicb(struct inode *inode,
159 udf_pblk_t *block, int *err);
160extern struct buffer_head *udf_bread(struct inode *inode, udf_pblk_t block,
161 int create, int *err);
162extern int udf_setsize(struct inode *, loff_t);
163extern void udf_evict_inode(struct inode *);
164extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
165extern udf_pblk_t udf_block_map(struct inode *inode, sector_t block);
166extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
167 struct kernel_lb_addr *, uint32_t *, sector_t *);
168extern int udf_setup_indirect_aext(struct inode *inode, udf_pblk_t block,
169 struct extent_position *epos);
170extern int __udf_add_aext(struct inode *inode, struct extent_position *epos,
171 struct kernel_lb_addr *eloc, uint32_t elen, int inc);
172extern int udf_add_aext(struct inode *, struct extent_position *,
173 struct kernel_lb_addr *, uint32_t, int);
174extern void udf_write_aext(struct inode *, struct extent_position *,
175 struct kernel_lb_addr *, uint32_t, int);
176extern int8_t udf_delete_aext(struct inode *, struct extent_position);
177extern int8_t udf_next_aext(struct inode *, struct extent_position *,
178 struct kernel_lb_addr *, uint32_t *, int);
179extern int8_t udf_current_aext(struct inode *, struct extent_position *,
180 struct kernel_lb_addr *, uint32_t *, int);
181
182/* misc.c */
183extern struct buffer_head *udf_tgetblk(struct super_block *sb,
184 udf_pblk_t block);
185extern struct buffer_head *udf_tread(struct super_block *sb, udf_pblk_t block);
186extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,
187 uint32_t, uint8_t);
188extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
189 uint8_t);
190extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
191 uint32_t, uint16_t *);
192extern struct buffer_head *udf_read_ptagged(struct super_block *,
193 struct kernel_lb_addr *, uint32_t,
194 uint16_t *);
195extern void udf_update_tag(char *, int);
196extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);
197
198/* lowlevel.c */
199extern unsigned int udf_get_last_session(struct super_block *);
200extern unsigned long udf_get_last_block(struct super_block *);
201
202/* partition.c */
203extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,
204 uint32_t);
205extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,
206 uint32_t);
207extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
208 uint32_t);
209extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
210 uint32_t);
211extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
212 uint32_t);
213extern int udf_relocate_blocks(struct super_block *, long, long *);
214
215static inline uint32_t
216udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
217 uint32_t offset)
218{
219 return udf_get_pblock(sb, loc->logicalBlockNum,
220 loc->partitionReferenceNum, offset);
221}
222
223/* unicode.c */
224extern int udf_get_filename(struct super_block *, const uint8_t *, int,
225 uint8_t *, int);
226extern int udf_put_filename(struct super_block *, const uint8_t *, int,
227 uint8_t *, int);
228extern int udf_dstrCS0toChar(struct super_block *, uint8_t *, int,
229 const uint8_t *, int);
230
231/* ialloc.c */
232extern void udf_free_inode(struct inode *);
233extern struct inode *udf_new_inode(struct inode *, umode_t);
234
235/* truncate.c */
236extern void udf_truncate_tail_extent(struct inode *);
237extern void udf_discard_prealloc(struct inode *);
238extern void udf_truncate_extents(struct inode *);
239
240/* balloc.c */
241extern void udf_free_blocks(struct super_block *, struct inode *,
242 struct kernel_lb_addr *, uint32_t, uint32_t);
243extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
244 uint32_t, uint32_t);
245extern udf_pblk_t udf_new_block(struct super_block *sb, struct inode *inode,
246 uint16_t partition, uint32_t goal, int *err);
247
248/* directory.c */
249extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *,
250 struct udf_fileident_bh *,
251 struct fileIdentDesc *,
252 struct extent_position *,
253 struct kernel_lb_addr *, uint32_t *,
254 sector_t *);
255extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize,
256 int *offset);
257extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
258extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
259
260/* udftime.c */
261extern void udf_disk_stamp_to_time(struct timespec64 *dest,
262 struct timestamp src);
263extern void udf_time_to_disk_stamp(struct timestamp *dest, struct timespec64 src);
264
265#endif /* __UDF_DECL_H */