Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Definitions for diskquota-operations. When diskquota is configured these | |
3 | * macros expand to the right source-code. | |
4 | * | |
5 | * Author: Marco van Wieringen <mvw@planets.elm.net> | |
1da177e4 LT |
6 | */ |
7 | #ifndef _LINUX_QUOTAOPS_ | |
8 | #define _LINUX_QUOTAOPS_ | |
9 | ||
1da177e4 LT |
10 | #include <linux/fs.h> |
11 | ||
03b06343 JK |
12 | static inline struct quota_info *sb_dqopt(struct super_block *sb) |
13 | { | |
14 | return &sb->s_dquot; | |
15 | } | |
74abb989 | 16 | |
1da177e4 LT |
17 | #if defined(CONFIG_QUOTA) |
18 | ||
19 | /* | |
20 | * declaration of quota_function calls in kernel. | |
21 | */ | |
c469070a DM |
22 | void inode_add_rsv_space(struct inode *inode, qsize_t number); |
23 | void inode_claim_rsv_space(struct inode *inode, qsize_t number); | |
24 | void inode_sub_rsv_space(struct inode *inode, qsize_t number); | |
25 | ||
b85f4b87 | 26 | int dquot_initialize(struct inode *inode, int type); |
9f754758 | 27 | void dquot_drop(struct inode *inode); |
3d9ea253 JK |
28 | struct dquot *dqget(struct super_block *sb, unsigned int id, int type); |
29 | void dqput(struct dquot *dquot); | |
12c77527 JK |
30 | int dquot_scan_active(struct super_block *sb, |
31 | int (*fn)(struct dquot *dquot, unsigned long priv), | |
32 | unsigned long priv); | |
7d9056ba JK |
33 | struct dquot *dquot_alloc(struct super_block *sb, int type); |
34 | void dquot_destroy(struct dquot *dquot); | |
b85f4b87 | 35 | |
5dd4056d CH |
36 | int __dquot_alloc_space(struct inode *inode, qsize_t number, |
37 | int warn, int reserve); | |
38 | void __dquot_free_space(struct inode *inode, qsize_t number, int reserve); | |
b85f4b87 | 39 | |
63936dda | 40 | int dquot_alloc_inode(const struct inode *inode); |
740d9dcd | 41 | |
5dd4056d | 42 | int dquot_claim_space_nodirty(struct inode *inode, qsize_t number); |
63936dda | 43 | void dquot_free_inode(const struct inode *inode); |
b85f4b87 | 44 | |
b85f4b87 JK |
45 | int dquot_commit(struct dquot *dquot); |
46 | int dquot_acquire(struct dquot *dquot); | |
47 | int dquot_release(struct dquot *dquot); | |
48 | int dquot_commit_info(struct super_block *sb, int type); | |
49 | int dquot_mark_dquot_dirty(struct dquot *dquot); | |
50 | ||
907f4554 CH |
51 | int dquot_file_open(struct inode *inode, struct file *file); |
52 | ||
b85f4b87 JK |
53 | int vfs_quota_on(struct super_block *sb, int type, int format_id, |
54 | char *path, int remount); | |
f55abc0f JK |
55 | int vfs_quota_enable(struct inode *inode, int type, int format_id, |
56 | unsigned int flags); | |
77e69dac AV |
57 | int vfs_quota_on_path(struct super_block *sb, int type, int format_id, |
58 | struct path *path); | |
b85f4b87 JK |
59 | int vfs_quota_on_mount(struct super_block *sb, char *qf_name, |
60 | int format_id, int type); | |
61 | int vfs_quota_off(struct super_block *sb, int type, int remount); | |
f55abc0f | 62 | int vfs_quota_disable(struct super_block *sb, int type, unsigned int flags); |
5fb324ad | 63 | int vfs_quota_sync(struct super_block *sb, int type, int wait); |
b85f4b87 JK |
64 | int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii); |
65 | int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii); | |
66 | int vfs_get_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di); | |
67 | int vfs_set_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di); | |
68 | ||
b43fa828 | 69 | int dquot_transfer(struct inode *inode, struct iattr *iattr); |
b85f4b87 | 70 | int vfs_dq_quota_on_remount(struct super_block *sb); |
1da177e4 | 71 | |
03b06343 JK |
72 | static inline struct mem_dqinfo *sb_dqinfo(struct super_block *sb, int type) |
73 | { | |
74 | return sb_dqopt(sb)->info + type; | |
75 | } | |
74abb989 JK |
76 | |
77 | /* | |
78 | * Functions for checking status of quota | |
79 | */ | |
80 | ||
ad1e6e8d | 81 | static inline bool sb_has_quota_usage_enabled(struct super_block *sb, int type) |
03b06343 | 82 | { |
f55abc0f JK |
83 | return sb_dqopt(sb)->flags & |
84 | dquot_state_flag(DQUOT_USAGE_ENABLED, type); | |
03b06343 | 85 | } |
74abb989 | 86 | |
ad1e6e8d | 87 | static inline bool sb_has_quota_limits_enabled(struct super_block *sb, int type) |
03b06343 | 88 | { |
f55abc0f JK |
89 | return sb_dqopt(sb)->flags & |
90 | dquot_state_flag(DQUOT_LIMITS_ENABLED, type); | |
03b06343 | 91 | } |
74abb989 | 92 | |
ad1e6e8d | 93 | static inline bool sb_has_quota_suspended(struct super_block *sb, int type) |
03b06343 | 94 | { |
f55abc0f JK |
95 | return sb_dqopt(sb)->flags & |
96 | dquot_state_flag(DQUOT_SUSPENDED, type); | |
03b06343 | 97 | } |
74abb989 | 98 | |
ad1e6e8d | 99 | static inline unsigned sb_any_quota_suspended(struct super_block *sb) |
03b06343 | 100 | { |
ad1e6e8d DM |
101 | unsigned type, tmsk = 0; |
102 | for (type = 0; type < MAXQUOTAS; type++) | |
103 | tmsk |= sb_has_quota_suspended(sb, type) << type; | |
104 | return tmsk; | |
03b06343 | 105 | } |
74abb989 | 106 | |
f55abc0f | 107 | /* Does kernel know about any quota information for given sb + type? */ |
ad1e6e8d | 108 | static inline bool sb_has_quota_loaded(struct super_block *sb, int type) |
f55abc0f JK |
109 | { |
110 | /* Currently if anything is on, then quota usage is on as well */ | |
111 | return sb_has_quota_usage_enabled(sb, type); | |
112 | } | |
113 | ||
ad1e6e8d | 114 | static inline unsigned sb_any_quota_loaded(struct super_block *sb) |
f55abc0f | 115 | { |
ad1e6e8d DM |
116 | unsigned type, tmsk = 0; |
117 | for (type = 0; type < MAXQUOTAS; type++) | |
118 | tmsk |= sb_has_quota_loaded(sb, type) << type; | |
119 | return tmsk; | |
f55abc0f JK |
120 | } |
121 | ||
ad1e6e8d | 122 | static inline bool sb_has_quota_active(struct super_block *sb, int type) |
f55abc0f JK |
123 | { |
124 | return sb_has_quota_loaded(sb, type) && | |
125 | !sb_has_quota_suspended(sb, type); | |
126 | } | |
127 | ||
ad1e6e8d | 128 | static inline unsigned sb_any_quota_active(struct super_block *sb) |
f55abc0f | 129 | { |
ad1e6e8d | 130 | return sb_any_quota_loaded(sb) & ~sb_any_quota_suspended(sb); |
f55abc0f JK |
131 | } |
132 | ||
1da177e4 LT |
133 | /* |
134 | * Operations supported for diskquotas. | |
135 | */ | |
61e225dc | 136 | extern const struct dquot_operations dquot_operations; |
0d54b217 | 137 | extern const struct quotactl_ops vfs_quotactl_ops; |
1da177e4 LT |
138 | |
139 | #define sb_dquot_ops (&dquot_operations) | |
140 | #define sb_quotactl_ops (&vfs_quotactl_ops) | |
141 | ||
142 | /* It is better to call this function outside of any transaction as it might | |
143 | * need a lot of space in journal for dquot structure allocation. */ | |
b85f4b87 | 144 | static inline void vfs_dq_init(struct inode *inode) |
1da177e4 LT |
145 | { |
146 | BUG_ON(!inode->i_sb); | |
f55abc0f | 147 | if (sb_any_quota_active(inode->i_sb) && !IS_NOQUOTA(inode)) |
1da177e4 LT |
148 | inode->i_sb->dq_op->initialize(inode, -1); |
149 | } | |
150 | ||
850b201b | 151 | /* Cannot be called inside a transaction */ |
b85f4b87 | 152 | static inline int vfs_dq_off(struct super_block *sb, int remount) |
1da177e4 LT |
153 | { |
154 | int ret = -ENOSYS; | |
155 | ||
0ff5af83 JK |
156 | if (sb->s_qcop && sb->s_qcop->quota_off) |
157 | ret = sb->s_qcop->quota_off(sb, -1, remount); | |
158 | return ret; | |
159 | } | |
160 | ||
1da177e4 LT |
161 | #else |
162 | ||
f55abc0f | 163 | static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type) |
03b06343 JK |
164 | { |
165 | return 0; | |
166 | } | |
167 | ||
f55abc0f | 168 | static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type) |
03b06343 JK |
169 | { |
170 | return 0; | |
171 | } | |
172 | ||
173 | static inline int sb_has_quota_suspended(struct super_block *sb, int type) | |
174 | { | |
175 | return 0; | |
176 | } | |
177 | ||
178 | static inline int sb_any_quota_suspended(struct super_block *sb) | |
179 | { | |
180 | return 0; | |
181 | } | |
74abb989 | 182 | |
f55abc0f JK |
183 | /* Does kernel know about any quota information for given sb + type? */ |
184 | static inline int sb_has_quota_loaded(struct super_block *sb, int type) | |
185 | { | |
186 | return 0; | |
187 | } | |
188 | ||
189 | static inline int sb_any_quota_loaded(struct super_block *sb) | |
190 | { | |
191 | return 0; | |
192 | } | |
193 | ||
194 | static inline int sb_has_quota_active(struct super_block *sb, int type) | |
195 | { | |
196 | return 0; | |
197 | } | |
198 | ||
199 | static inline int sb_any_quota_active(struct super_block *sb) | |
200 | { | |
201 | return 0; | |
202 | } | |
203 | ||
1da177e4 LT |
204 | /* |
205 | * NO-OP when quota not configured. | |
206 | */ | |
207 | #define sb_dquot_ops (NULL) | |
208 | #define sb_quotactl_ops (NULL) | |
50f8c370 | 209 | |
b85f4b87 | 210 | static inline void vfs_dq_init(struct inode *inode) |
50f8c370 AM |
211 | { |
212 | } | |
213 | ||
9f754758 | 214 | static inline void dquot_drop(struct inode *inode) |
50f8c370 AM |
215 | { |
216 | } | |
217 | ||
63936dda | 218 | static inline int dquot_alloc_inode(const struct inode *inode) |
50f8c370 AM |
219 | { |
220 | return 0; | |
221 | } | |
222 | ||
63936dda | 223 | static inline void dquot_free_inode(const struct inode *inode) |
50f8c370 AM |
224 | { |
225 | } | |
226 | ||
b85f4b87 | 227 | static inline int vfs_dq_off(struct super_block *sb, int remount) |
50f8c370 AM |
228 | { |
229 | return 0; | |
230 | } | |
231 | ||
b85f4b87 | 232 | static inline int vfs_dq_quota_on_remount(struct super_block *sb) |
50f8c370 AM |
233 | { |
234 | return 0; | |
235 | } | |
236 | ||
b43fa828 | 237 | static inline int dquot_transfer(struct inode *inode, struct iattr *iattr) |
50f8c370 AM |
238 | { |
239 | return 0; | |
240 | } | |
241 | ||
5dd4056d CH |
242 | static inline int __dquot_alloc_space(struct inode *inode, qsize_t number, |
243 | int warn, int reserve) | |
1da177e4 | 244 | { |
5dd4056d CH |
245 | if (!reserve) |
246 | inode_add_bytes(inode, number); | |
1da177e4 LT |
247 | return 0; |
248 | } | |
249 | ||
5dd4056d CH |
250 | static inline void __dquot_free_space(struct inode *inode, qsize_t number, |
251 | int reserve) | |
1da177e4 | 252 | { |
5dd4056d CH |
253 | if (!reserve) |
254 | inode_sub_bytes(inode, number); | |
1da177e4 LT |
255 | } |
256 | ||
5dd4056d | 257 | static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number) |
1da177e4 | 258 | { |
5dd4056d | 259 | inode_add_bytes(inode, number); |
1da177e4 LT |
260 | return 0; |
261 | } | |
262 | ||
5dd4056d CH |
263 | #endif /* CONFIG_QUOTA */ |
264 | ||
265 | static inline int dquot_alloc_space_nodirty(struct inode *inode, qsize_t nr) | |
1da177e4 | 266 | { |
5dd4056d | 267 | return __dquot_alloc_space(inode, nr, 1, 0); |
1da177e4 LT |
268 | } |
269 | ||
5dd4056d | 270 | static inline int dquot_alloc_space(struct inode *inode, qsize_t nr) |
f18df228 | 271 | { |
5dd4056d CH |
272 | int ret; |
273 | ||
274 | ret = dquot_alloc_space_nodirty(inode, nr); | |
275 | if (!ret) | |
276 | mark_inode_dirty(inode); | |
277 | return ret; | |
f18df228 MC |
278 | } |
279 | ||
5dd4056d | 280 | static inline int dquot_alloc_block_nodirty(struct inode *inode, qsize_t nr) |
740d9dcd | 281 | { |
5dd4056d | 282 | return dquot_alloc_space_nodirty(inode, nr << inode->i_blkbits); |
740d9dcd MC |
283 | } |
284 | ||
5dd4056d | 285 | static inline int dquot_alloc_block(struct inode *inode, qsize_t nr) |
740d9dcd | 286 | { |
5dd4056d | 287 | return dquot_alloc_space(inode, nr << inode->i_blkbits); |
740d9dcd MC |
288 | } |
289 | ||
5dd4056d | 290 | static inline int dquot_prealloc_block_nodirty(struct inode *inode, qsize_t nr) |
1da177e4 | 291 | { |
5dd4056d | 292 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0, 0); |
1da177e4 LT |
293 | } |
294 | ||
5dd4056d | 295 | static inline int dquot_prealloc_block(struct inode *inode, qsize_t nr) |
1da177e4 | 296 | { |
5dd4056d | 297 | int ret; |
1da177e4 | 298 | |
5dd4056d CH |
299 | ret = dquot_prealloc_block_nodirty(inode, nr); |
300 | if (!ret) | |
301 | mark_inode_dirty(inode); | |
302 | return ret; | |
03f6e92b JK |
303 | } |
304 | ||
5dd4056d | 305 | static inline int dquot_reserve_block(struct inode *inode, qsize_t nr) |
03f6e92b | 306 | { |
5dd4056d | 307 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, 1, 1); |
03f6e92b JK |
308 | } |
309 | ||
5dd4056d | 310 | static inline int dquot_claim_block(struct inode *inode, qsize_t nr) |
03f6e92b | 311 | { |
5dd4056d | 312 | int ret; |
03f6e92b | 313 | |
5dd4056d CH |
314 | ret = dquot_claim_space_nodirty(inode, nr << inode->i_blkbits); |
315 | if (!ret) | |
316 | mark_inode_dirty(inode); | |
317 | return ret; | |
03f6e92b JK |
318 | } |
319 | ||
5dd4056d | 320 | static inline void dquot_free_space_nodirty(struct inode *inode, qsize_t nr) |
f18df228 | 321 | { |
5dd4056d | 322 | __dquot_free_space(inode, nr, 0); |
f18df228 MC |
323 | } |
324 | ||
5dd4056d | 325 | static inline void dquot_free_space(struct inode *inode, qsize_t nr) |
740d9dcd | 326 | { |
5dd4056d CH |
327 | dquot_free_space_nodirty(inode, nr); |
328 | mark_inode_dirty(inode); | |
740d9dcd MC |
329 | } |
330 | ||
5dd4056d | 331 | static inline void dquot_free_block_nodirty(struct inode *inode, qsize_t nr) |
740d9dcd | 332 | { |
5dd4056d | 333 | dquot_free_space_nodirty(inode, nr << inode->i_blkbits); |
740d9dcd MC |
334 | } |
335 | ||
5dd4056d | 336 | static inline void dquot_free_block(struct inode *inode, qsize_t nr) |
03f6e92b | 337 | { |
5dd4056d | 338 | dquot_free_space(inode, nr << inode->i_blkbits); |
03f6e92b JK |
339 | } |
340 | ||
5dd4056d CH |
341 | static inline void dquot_release_reservation_block(struct inode *inode, |
342 | qsize_t nr) | |
03f6e92b | 343 | { |
5dd4056d | 344 | __dquot_free_space(inode, nr << inode->i_blkbits, 1); |
03f6e92b | 345 | } |
1da177e4 | 346 | |
907f4554 CH |
347 | #define dquot_file_open generic_file_open |
348 | ||
1da177e4 | 349 | #endif /* _LINUX_QUOTAOPS_ */ |