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27#ifndef __UBIFS_MISC_H__
28#define __UBIFS_MISC_H__
29
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34
35
36static inline int ubifs_zn_dirty(const struct ubifs_znode *znode)
37{
38 return !!test_bit(DIRTY_ZNODE, &znode->flags);
39}
40
41
42
43
44
45static inline void ubifs_wake_up_bgt(struct ubifs_info *c)
46{
47 if (c->bgt && !c->need_bgt) {
48 c->need_bgt = 1;
49 wake_up_process(c->bgt);
50 }
51}
52
53
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59
60
61static inline struct ubifs_znode *
62ubifs_tnc_find_child(struct ubifs_znode *znode, int start)
63{
64 while (start < znode->child_cnt) {
65 if (znode->zbranch[start].znode)
66 return znode->zbranch[start].znode;
67 start += 1;
68 }
69
70 return NULL;
71}
72
73
74
75
76
77static inline struct ubifs_inode *ubifs_inode(const struct inode *inode)
78{
79 return container_of(inode, struct ubifs_inode, vfs_inode);
80}
81
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86
87
88
89static inline int ubifs_compr_present(int compr_type)
90{
91 ubifs_assert(compr_type >= 0 && compr_type < UBIFS_COMPR_TYPES_CNT);
92 return !!ubifs_compressors[compr_type]->capi_name;
93}
94
95
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98
99
100
101static inline const char *ubifs_compr_name(int compr_type)
102{
103 ubifs_assert(compr_type >= 0 && compr_type < UBIFS_COMPR_TYPES_CNT);
104 return ubifs_compressors[compr_type]->name;
105}
106
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112
113
114static inline int ubifs_wbuf_sync(struct ubifs_wbuf *wbuf)
115{
116 int err;
117
118 mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
119 err = ubifs_wbuf_sync_nolock(wbuf);
120 mutex_unlock(&wbuf->io_mutex);
121 return err;
122}
123
124
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126
127
128
129
130
131static inline int ubifs_leb_unmap(const struct ubifs_info *c, int lnum)
132{
133 int err;
134
135 if (c->ro_media)
136 return -EROFS;
137 err = ubi_leb_unmap(c->ubi, lnum);
138 if (err) {
139 ubifs_err("unmap LEB %d failed, error %d", lnum, err);
140 return err;
141 }
142
143 return 0;
144}
145
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155
156
157static inline int ubifs_leb_write(const struct ubifs_info *c, int lnum,
158 const void *buf, int offs, int len, int dtype)
159{
160 int err;
161
162 if (c->ro_media)
163 return -EROFS;
164 err = ubi_leb_write(c->ubi, lnum, buf, offs, len, dtype);
165 if (err) {
166 ubifs_err("writing %d bytes at %d:%d, error %d",
167 len, lnum, offs, err);
168 return err;
169 }
170
171 return 0;
172}
173
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182
183
184static inline int ubifs_leb_change(const struct ubifs_info *c, int lnum,
185 const void *buf, int len, int dtype)
186{
187 int err;
188
189 if (c->ro_media)
190 return -EROFS;
191 err = ubi_leb_change(c->ubi, lnum, buf, len, dtype);
192 if (err) {
193 ubifs_err("changing %d bytes in LEB %d, error %d",
194 len, lnum, err);
195 return err;
196 }
197
198 return 0;
199}
200
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208
209
210static inline int ubifs_encode_dev(union ubifs_dev_desc *dev, dev_t rdev)
211{
212 if (new_valid_dev(rdev)) {
213 dev->new = cpu_to_le32(new_encode_dev(rdev));
214 return sizeof(dev->new);
215 } else {
216 dev->huge = cpu_to_le64(huge_encode_dev(rdev));
217 return sizeof(dev->huge);
218 }
219}
220
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228
229
230static inline int ubifs_add_dirt(struct ubifs_info *c, int lnum, int dirty)
231{
232 return ubifs_update_one_lp(c, lnum, LPROPS_NC, dirty, 0, 0);
233}
234
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243
244static inline int ubifs_return_leb(struct ubifs_info *c, int lnum)
245{
246 return ubifs_change_one_lp(c, lnum, LPROPS_NC, LPROPS_NC, 0,
247 LPROPS_TAKEN, 0);
248}
249
250
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253
254
255static inline int ubifs_idx_node_sz(const struct ubifs_info *c, int child_cnt)
256{
257 return UBIFS_IDX_NODE_SZ + (UBIFS_BRANCH_SZ + c->key_len) * child_cnt;
258}
259
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264
265
266static inline
267struct ubifs_branch *ubifs_idx_branch(const struct ubifs_info *c,
268 const struct ubifs_idx_node *idx,
269 int bnum)
270{
271 return (struct ubifs_branch *)((void *)idx->branches +
272 (UBIFS_BRANCH_SZ + c->key_len) * bnum);
273}
274
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277
278
279
280static inline void *ubifs_idx_key(const struct ubifs_info *c,
281 const struct ubifs_idx_node *idx)
282{
283 return (void *)((struct ubifs_branch *)idx->branches)->key;
284}
285
286
287
288
289
290static inline struct timespec ubifs_current_time(struct inode *inode)
291{
292 return (inode->i_sb->s_time_gran < NSEC_PER_SEC) ?
293 current_fs_time(inode->i_sb) : CURRENT_TIME_SEC;
294}
295
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306
307static inline int ubifs_tnc_lookup(struct ubifs_info *c,
308 const union ubifs_key *key, void *node)
309{
310 return ubifs_tnc_locate(c, key, node, NULL, NULL);
311}
312
313
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318
319
320static inline void ubifs_get_lprops(struct ubifs_info *c)
321{
322 mutex_lock(&c->lp_mutex);
323}
324
325
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329
330
331
332static inline void ubifs_release_lprops(struct ubifs_info *c)
333{
334 ubifs_assert(mutex_is_locked(&c->lp_mutex));
335 ubifs_assert(c->lst.empty_lebs >= 0 &&
336 c->lst.empty_lebs <= c->main_lebs);
337 mutex_unlock(&c->lp_mutex);
338}
339
340#endif
341