udf: Handle error when adding extent to a file
[linux-2.6-block.git] / fs / udf / udfdecl.h
CommitLineData
b2441318 1/* SPDX-License-Identifier: GPL-2.0 */
1da177e4
LT
2#ifndef __UDF_DECL_H
3#define __UDF_DECL_H
4
78ace70c
JP
5#define pr_fmt(fmt) "UDF-fs: " fmt
6
1da177e4
LT
7#include "ecma_167.h"
8#include "osta_udf.h"
9
10#include <linux/fs.h>
1da177e4 11#include <linux/types.h>
1da177e4 12#include <linux/buffer_head.h>
15aebd28 13#include <linux/udf_fs_i.h>
1da177e4 14
15aebd28 15#include "udf_sb.h"
1da177e4 16#include "udfend.h"
d652eefb 17#include "udf_i.h"
1da177e4 18
15aebd28
CH
19#define UDF_DEFAULT_PREALLOC_BLOCKS 8
20
34116645
LT
21extern __printf(3, 4) void _udf_err(struct super_block *sb,
22 const char *function, const char *fmt, ...);
78ace70c
JP
23#define udf_err(sb, fmt, ...) \
24 _udf_err(sb, __func__, fmt, ##__VA_ARGS__)
15aebd28 25
34116645
LT
26extern __printf(3, 4) void _udf_warn(struct super_block *sb,
27 const char *function, const char *fmt, ...);
a40ecd7b
JP
28#define udf_warn(sb, fmt, ...) \
29 _udf_warn(sb, __func__, fmt, ##__VA_ARGS__)
7e273e3b 30
78ace70c
JP
31#define udf_info(fmt, ...) \
32 pr_info("INFO " fmt, ##__VA_ARGS__)
7e273e3b 33
78ace70c 34#define udf_debug(fmt, ...) \
8cbd9af9 35 pr_debug("%s:%d:%s: " fmt, __FILE__, __LINE__, __func__, ##__VA_ARGS__)
15aebd28 36
1da177e4
LT
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
0c9850f4
JK
43#define UDF_INVALID_ID ((uint32_t)-1)
44
1da177e4 45#define UDF_NAME_PAD 4
9fba7056
AG
46#define UDF_NAME_LEN 254
47#define UDF_NAME_LEN_CS0 255
1da177e4 48
d652eefb 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}
1da177e4 67
3f2587bb 68/* computes tag checksum */
5ca4e4be 69u8 udf_tag_checksum(const struct tag *t);
3f2587bb 70
b490bdd6
SM
71typedef uint32_t udf_pblk_t;
72
1da177e4
LT
73struct dentry;
74struct inode;
75struct task_struct;
76struct buffer_head;
77struct super_block;
78
221e583a 79extern const struct export_operations udf_export_ops;
c5ef1c42 80extern const struct inode_operations udf_dir_inode_operations;
4b6f5d20 81extern const struct file_operations udf_dir_operations;
c5ef1c42 82extern const struct inode_operations udf_file_inode_operations;
4b6f5d20 83extern const struct file_operations udf_file_operations;
ad4d0532 84extern const struct inode_operations udf_symlink_inode_operations;
f5e54d6e
CH
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;
1da177e4 88
d16076d9
JK
89struct udf_fileident_iter {
90 struct inode *dir; /* Directory we are working with */
91 loff_t pos; /* Logical position in a dir */
92 struct buffer_head *bh[2]; /* Buffer containing 'pos' and possibly
93 * next buffer if entry straddles
94 * blocks */
95 struct kernel_lb_addr eloc; /* Start of extent containing 'pos' */
96 uint32_t elen; /* Length of extent containing 'pos' */
97 sector_t loffset; /* Block offset of 'pos' within above
98 * extent */
99 struct extent_position epos; /* Position after the above extent */
100 struct fileIdentDesc fi; /* Copied directory entry */
101 uint8_t *name; /* Pointer to entry name */
102 uint8_t namebuf[UDF_NAME_LEN_CS0]; /* Storage for entry name in case
103 * the name is split between two blocks
104 */
105};
106
cb00ea35 107struct udf_vds_record {
1da177e4
LT
108 uint32_t block;
109 uint32_t volDescSeqNum;
110};
111
cb00ea35 112struct generic_desc {
5ca4e4be 113 struct tag descTag;
28de7948 114 __le32 volDescSeqNum;
1da177e4
LT
115};
116
ff116fc8 117
1da177e4 118/* super.c */
fab3c858 119
146bca72
JK
120static inline void udf_updated_lvid(struct super_block *sb)
121{
122 struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh;
123
124 BUG_ON(!bh);
125 WARN_ON_ONCE(((struct logicalVolIntegrityDesc *)
126 bh->b_data)->integrityType !=
127 cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN));
146bca72
JK
128 UDF_SB(sb)->s_lvid_dirty = 1;
129}
d664b6af 130extern u64 lvid_get_unique_id(struct super_block *sb);
3080a74e
NJ
131struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
132 u32 meta_file_loc, u32 partition_num);
1da177e4
LT
133
134/* namei.c */
f2e83347
JK
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}
1da177e4
LT
141
142/* file.c */
2f07a88b 143extern long udf_ioctl(struct file *, unsigned int, unsigned long);
1da177e4 144/* inode.c */
6174c2eb
JK
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}
7e49b6f2 157extern int udf_expand_file_adinicb(struct inode *);
b490bdd6
SM
158extern struct buffer_head *udf_bread(struct inode *inode, udf_pblk_t block,
159 int create, int *err);
7e49b6f2 160extern int udf_setsize(struct inode *, loff_t);
3aac2b62 161extern void udf_evict_inode(struct inode *);
a9185b41 162extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
b490bdd6 163extern udf_pblk_t udf_block_map(struct inode *inode, sector_t block);
cb00ea35 164extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
5ca4e4be 165 struct kernel_lb_addr *, uint32_t *, sector_t *);
b490bdd6 166extern int udf_setup_indirect_aext(struct inode *inode, udf_pblk_t block,
fcea62ba
JK
167 struct extent_position *epos);
168extern int __udf_add_aext(struct inode *inode, struct extent_position *epos,
169 struct kernel_lb_addr *eloc, uint32_t elen, int inc);
7e49b6f2
JK
170extern int udf_add_aext(struct inode *, struct extent_position *,
171 struct kernel_lb_addr *, uint32_t, int);
172extern void udf_write_aext(struct inode *, struct extent_position *,
97e961fd 173 struct kernel_lb_addr *, uint32_t, int);
6c1e4d06 174extern int8_t udf_delete_aext(struct inode *, struct extent_position);
cb00ea35 175extern int8_t udf_next_aext(struct inode *, struct extent_position *,
5ca4e4be 176 struct kernel_lb_addr *, uint32_t *, int);
cb00ea35 177extern int8_t udf_current_aext(struct inode *, struct extent_position *,
5ca4e4be 178 struct kernel_lb_addr *, uint32_t *, int);
c3367a1b 179extern void udf_update_extra_perms(struct inode *inode, umode_t mode);
1da177e4
LT
180
181/* misc.c */
b490bdd6
SM
182extern struct buffer_head *udf_tgetblk(struct super_block *sb,
183 udf_pblk_t block);
184extern struct buffer_head *udf_tread(struct super_block *sb, udf_pblk_t block);
cb00ea35
CG
185extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,
186 uint32_t, uint8_t);
187extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
188 uint8_t);
189extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
190 uint32_t, uint16_t *);
191extern struct buffer_head *udf_read_ptagged(struct super_block *,
97e961fd 192 struct kernel_lb_addr *, uint32_t,
cb00ea35 193 uint16_t *);
1da177e4
LT
194extern void udf_update_tag(char *, int);
195extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);
196
197/* lowlevel.c */
198extern unsigned int udf_get_last_session(struct super_block *);
199extern unsigned long udf_get_last_block(struct super_block *);
200
201/* partition.c */
cb00ea35
CG
202extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,
203 uint32_t);
204extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,
205 uint32_t);
206extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
207 uint32_t);
208extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
209 uint32_t);
bfb257a5
JK
210extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
211 uint32_t);
1da177e4
LT
212extern int udf_relocate_blocks(struct super_block *, long, long *);
213
97e961fd
PE
214static inline uint32_t
215udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
216 uint32_t offset)
217{
218 return udf_get_pblock(sb, loc->logicalBlockNum,
219 loc->partitionReferenceNum, offset);
220}
221
1da177e4 222/* unicode.c */
9293fcfb
AG
223extern int udf_get_filename(struct super_block *, const uint8_t *, int,
224 uint8_t *, int);
525e2c56
AG
225extern int udf_put_filename(struct super_block *, const uint8_t *, int,
226 uint8_t *, int);
e966fc8d
JK
227extern int udf_dstrCS0toChar(struct super_block *, uint8_t *, int,
228 const uint8_t *, int);
1da177e4
LT
229
230/* ialloc.c */
231extern void udf_free_inode(struct inode *);
0b93a92b 232extern struct inode *udf_new_inode(struct inode *, umode_t);
1da177e4
LT
233
234/* truncate.c */
74584ae5 235extern void udf_truncate_tail_extent(struct inode *);
1da177e4 236extern void udf_discard_prealloc(struct inode *);
2b42be5e 237extern int udf_truncate_extents(struct inode *);
1da177e4
LT
238
239/* balloc.c */
cb00ea35 240extern void udf_free_blocks(struct super_block *, struct inode *,
97e961fd 241 struct kernel_lb_addr *, uint32_t, uint32_t);
cb00ea35
CG
242extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
243 uint32_t, uint32_t);
b490bdd6
SM
244extern udf_pblk_t udf_new_block(struct super_block *sb, struct inode *inode,
245 uint16_t partition, uint32_t goal, int *err);
1da177e4 246
1da177e4 247/* directory.c */
d16076d9
JK
248int udf_fiiter_init(struct udf_fileident_iter *iter, struct inode *dir,
249 loff_t pos);
250int udf_fiiter_advance(struct udf_fileident_iter *iter);
251void udf_fiiter_release(struct udf_fileident_iter *iter);
252void udf_fiiter_write_fi(struct udf_fileident_iter *iter, uint8_t *impuse);
f2844803
JK
253void udf_fiiter_update_elen(struct udf_fileident_iter *iter, uint32_t new_elen);
254int udf_fiiter_append_blk(struct udf_fileident_iter *iter);
5ca4e4be
PE
255extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
256extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
1da177e4 257
1da177e4 258/* udftime.c */
c3b9cecd 259extern void udf_disk_stamp_to_time(struct timespec64 *dest,
5ca4e4be 260 struct timestamp src);
c3b9cecd 261extern void udf_time_to_disk_stamp(struct timestamp *dest, struct timespec64 src);
1da177e4 262
cb00ea35 263#endif /* __UDF_DECL_H */