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20#ifndef __XFS_RMAP_H__
21#define __XFS_RMAP_H__
22
23static inline void
24xfs_rmap_ag_owner(
25 struct xfs_owner_info *oi,
26 uint64_t owner)
27{
28 oi->oi_owner = owner;
29 oi->oi_offset = 0;
30 oi->oi_flags = 0;
31}
32
33static inline void
34xfs_rmap_ino_bmbt_owner(
35 struct xfs_owner_info *oi,
36 xfs_ino_t ino,
37 int whichfork)
38{
39 oi->oi_owner = ino;
40 oi->oi_offset = 0;
41 oi->oi_flags = XFS_OWNER_INFO_BMBT_BLOCK;
42 if (whichfork == XFS_ATTR_FORK)
43 oi->oi_flags |= XFS_OWNER_INFO_ATTR_FORK;
44}
45
46static inline void
47xfs_rmap_ino_owner(
48 struct xfs_owner_info *oi,
49 xfs_ino_t ino,
50 int whichfork,
51 xfs_fileoff_t offset)
52{
53 oi->oi_owner = ino;
54 oi->oi_offset = offset;
55 oi->oi_flags = 0;
56 if (whichfork == XFS_ATTR_FORK)
57 oi->oi_flags |= XFS_OWNER_INFO_ATTR_FORK;
58}
59
60static inline void
61xfs_rmap_skip_owner_update(
62 struct xfs_owner_info *oi)
63{
64 oi->oi_owner = XFS_RMAP_OWN_UNKNOWN;
65}
66
67
68
69struct xfs_buf;
70
71static inline __u64
72xfs_rmap_irec_offset_pack(
73 const struct xfs_rmap_irec *irec)
74{
75 __u64 x;
76
77 x = XFS_RMAP_OFF(irec->rm_offset);
78 if (irec->rm_flags & XFS_RMAP_ATTR_FORK)
79 x |= XFS_RMAP_OFF_ATTR_FORK;
80 if (irec->rm_flags & XFS_RMAP_BMBT_BLOCK)
81 x |= XFS_RMAP_OFF_BMBT_BLOCK;
82 if (irec->rm_flags & XFS_RMAP_UNWRITTEN)
83 x |= XFS_RMAP_OFF_UNWRITTEN;
84 return x;
85}
86
87static inline int
88xfs_rmap_irec_offset_unpack(
89 __u64 offset,
90 struct xfs_rmap_irec *irec)
91{
92 if (offset & ~(XFS_RMAP_OFF_MASK | XFS_RMAP_OFF_FLAGS))
93 return -EFSCORRUPTED;
94 irec->rm_offset = XFS_RMAP_OFF(offset);
95 if (offset & XFS_RMAP_OFF_ATTR_FORK)
96 irec->rm_flags |= XFS_RMAP_ATTR_FORK;
97 if (offset & XFS_RMAP_OFF_BMBT_BLOCK)
98 irec->rm_flags |= XFS_RMAP_BMBT_BLOCK;
99 if (offset & XFS_RMAP_OFF_UNWRITTEN)
100 irec->rm_flags |= XFS_RMAP_UNWRITTEN;
101 return 0;
102}
103
104static inline void
105xfs_owner_info_unpack(
106 struct xfs_owner_info *oinfo,
107 uint64_t *owner,
108 uint64_t *offset,
109 unsigned int *flags)
110{
111 unsigned int r = 0;
112
113 *owner = oinfo->oi_owner;
114 *offset = oinfo->oi_offset;
115 if (oinfo->oi_flags & XFS_OWNER_INFO_ATTR_FORK)
116 r |= XFS_RMAP_ATTR_FORK;
117 if (oinfo->oi_flags & XFS_OWNER_INFO_BMBT_BLOCK)
118 r |= XFS_RMAP_BMBT_BLOCK;
119 *flags = r;
120}
121
122static inline void
123xfs_owner_info_pack(
124 struct xfs_owner_info *oinfo,
125 uint64_t owner,
126 uint64_t offset,
127 unsigned int flags)
128{
129 oinfo->oi_owner = owner;
130 oinfo->oi_offset = XFS_RMAP_OFF(offset);
131 oinfo->oi_flags = 0;
132 if (flags & XFS_RMAP_ATTR_FORK)
133 oinfo->oi_flags |= XFS_OWNER_INFO_ATTR_FORK;
134 if (flags & XFS_RMAP_BMBT_BLOCK)
135 oinfo->oi_flags |= XFS_OWNER_INFO_BMBT_BLOCK;
136}
137
138int xfs_rmap_alloc(struct xfs_trans *tp, struct xfs_buf *agbp,
139 xfs_agnumber_t agno, xfs_agblock_t bno, xfs_extlen_t len,
140 struct xfs_owner_info *oinfo);
141int xfs_rmap_free(struct xfs_trans *tp, struct xfs_buf *agbp,
142 xfs_agnumber_t agno, xfs_agblock_t bno, xfs_extlen_t len,
143 struct xfs_owner_info *oinfo);
144
145int xfs_rmap_lookup_le(struct xfs_btree_cur *cur, xfs_agblock_t bno,
146 xfs_extlen_t len, uint64_t owner, uint64_t offset,
147 unsigned int flags, int *stat);
148int xfs_rmap_lookup_eq(struct xfs_btree_cur *cur, xfs_agblock_t bno,
149 xfs_extlen_t len, uint64_t owner, uint64_t offset,
150 unsigned int flags, int *stat);
151int xfs_rmap_insert(struct xfs_btree_cur *rcur, xfs_agblock_t agbno,
152 xfs_extlen_t len, uint64_t owner, uint64_t offset,
153 unsigned int flags);
154int xfs_rmap_get_rec(struct xfs_btree_cur *cur, struct xfs_rmap_irec *irec,
155 int *stat);
156
157typedef int (*xfs_rmap_query_range_fn)(
158 struct xfs_btree_cur *cur,
159 struct xfs_rmap_irec *rec,
160 void *priv);
161
162int xfs_rmap_query_range(struct xfs_btree_cur *cur,
163 struct xfs_rmap_irec *low_rec, struct xfs_rmap_irec *high_rec,
164 xfs_rmap_query_range_fn fn, void *priv);
165int xfs_rmap_query_all(struct xfs_btree_cur *cur, xfs_rmap_query_range_fn fn,
166 void *priv);
167
168enum xfs_rmap_intent_type {
169 XFS_RMAP_MAP,
170 XFS_RMAP_MAP_SHARED,
171 XFS_RMAP_UNMAP,
172 XFS_RMAP_UNMAP_SHARED,
173 XFS_RMAP_CONVERT,
174 XFS_RMAP_CONVERT_SHARED,
175 XFS_RMAP_ALLOC,
176 XFS_RMAP_FREE,
177};
178
179struct xfs_rmap_intent {
180 struct list_head ri_list;
181 enum xfs_rmap_intent_type ri_type;
182 uint64_t ri_owner;
183 int ri_whichfork;
184 struct xfs_bmbt_irec ri_bmap;
185};
186
187
188int xfs_rmap_map_extent(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
189 struct xfs_inode *ip, int whichfork,
190 struct xfs_bmbt_irec *imap);
191int xfs_rmap_unmap_extent(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
192 struct xfs_inode *ip, int whichfork,
193 struct xfs_bmbt_irec *imap);
194int xfs_rmap_convert_extent(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
195 struct xfs_inode *ip, int whichfork,
196 struct xfs_bmbt_irec *imap);
197int xfs_rmap_alloc_extent(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
198 xfs_agnumber_t agno, xfs_agblock_t bno, xfs_extlen_t len,
199 uint64_t owner);
200int xfs_rmap_free_extent(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
201 xfs_agnumber_t agno, xfs_agblock_t bno, xfs_extlen_t len,
202 uint64_t owner);
203
204void xfs_rmap_finish_one_cleanup(struct xfs_trans *tp,
205 struct xfs_btree_cur *rcur, int error);
206int xfs_rmap_finish_one(struct xfs_trans *tp, enum xfs_rmap_intent_type type,
207 uint64_t owner, int whichfork, xfs_fileoff_t startoff,
208 xfs_fsblock_t startblock, xfs_filblks_t blockcount,
209 xfs_exntst_t state, struct xfs_btree_cur **pcur);
210
211int xfs_rmap_find_left_neighbor(struct xfs_btree_cur *cur, xfs_agblock_t bno,
212 uint64_t owner, uint64_t offset, unsigned int flags,
213 struct xfs_rmap_irec *irec, int *stat);
214int xfs_rmap_lookup_le_range(struct xfs_btree_cur *cur, xfs_agblock_t bno,
215 uint64_t owner, uint64_t offset, unsigned int flags,
216 struct xfs_rmap_irec *irec, int *stat);
217int xfs_rmap_compare(const struct xfs_rmap_irec *a,
218 const struct xfs_rmap_irec *b);
219union xfs_btree_rec;
220int xfs_rmap_btrec_to_irec(union xfs_btree_rec *rec,
221 struct xfs_rmap_irec *irec);
222
223#endif
224