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Commit | Line | Data |
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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 | ||
871a2931 | 26 | void dquot_initialize(struct inode *inode); |
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); | |
b9b2dd36 CH |
66 | int vfs_get_dqblk(struct super_block *sb, int type, qid_t id, |
67 | struct fs_disk_quota *di); | |
b85f4b87 JK |
68 | int vfs_set_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di); |
69 | ||
b43fa828 | 70 | int dquot_transfer(struct inode *inode, struct iattr *iattr); |
b85f4b87 | 71 | int vfs_dq_quota_on_remount(struct super_block *sb); |
1da177e4 | 72 | |
03b06343 JK |
73 | static inline struct mem_dqinfo *sb_dqinfo(struct super_block *sb, int type) |
74 | { | |
75 | return sb_dqopt(sb)->info + type; | |
76 | } | |
74abb989 JK |
77 | |
78 | /* | |
79 | * Functions for checking status of quota | |
80 | */ | |
81 | ||
ad1e6e8d | 82 | static inline bool sb_has_quota_usage_enabled(struct super_block *sb, int type) |
03b06343 | 83 | { |
f55abc0f JK |
84 | return sb_dqopt(sb)->flags & |
85 | dquot_state_flag(DQUOT_USAGE_ENABLED, type); | |
03b06343 | 86 | } |
74abb989 | 87 | |
ad1e6e8d | 88 | static inline bool sb_has_quota_limits_enabled(struct super_block *sb, int type) |
03b06343 | 89 | { |
f55abc0f JK |
90 | return sb_dqopt(sb)->flags & |
91 | dquot_state_flag(DQUOT_LIMITS_ENABLED, type); | |
03b06343 | 92 | } |
74abb989 | 93 | |
ad1e6e8d | 94 | static inline bool sb_has_quota_suspended(struct super_block *sb, int type) |
03b06343 | 95 | { |
f55abc0f JK |
96 | return sb_dqopt(sb)->flags & |
97 | dquot_state_flag(DQUOT_SUSPENDED, type); | |
03b06343 | 98 | } |
74abb989 | 99 | |
ad1e6e8d | 100 | static inline unsigned sb_any_quota_suspended(struct super_block *sb) |
03b06343 | 101 | { |
ad1e6e8d DM |
102 | unsigned type, tmsk = 0; |
103 | for (type = 0; type < MAXQUOTAS; type++) | |
104 | tmsk |= sb_has_quota_suspended(sb, type) << type; | |
105 | return tmsk; | |
03b06343 | 106 | } |
74abb989 | 107 | |
f55abc0f | 108 | /* Does kernel know about any quota information for given sb + type? */ |
ad1e6e8d | 109 | static inline bool sb_has_quota_loaded(struct super_block *sb, int type) |
f55abc0f JK |
110 | { |
111 | /* Currently if anything is on, then quota usage is on as well */ | |
112 | return sb_has_quota_usage_enabled(sb, type); | |
113 | } | |
114 | ||
ad1e6e8d | 115 | static inline unsigned sb_any_quota_loaded(struct super_block *sb) |
f55abc0f | 116 | { |
ad1e6e8d DM |
117 | unsigned type, tmsk = 0; |
118 | for (type = 0; type < MAXQUOTAS; type++) | |
119 | tmsk |= sb_has_quota_loaded(sb, type) << type; | |
120 | return tmsk; | |
f55abc0f JK |
121 | } |
122 | ||
ad1e6e8d | 123 | static inline bool sb_has_quota_active(struct super_block *sb, int type) |
f55abc0f JK |
124 | { |
125 | return sb_has_quota_loaded(sb, type) && | |
126 | !sb_has_quota_suspended(sb, type); | |
127 | } | |
128 | ||
ad1e6e8d | 129 | static inline unsigned sb_any_quota_active(struct super_block *sb) |
f55abc0f | 130 | { |
ad1e6e8d | 131 | return sb_any_quota_loaded(sb) & ~sb_any_quota_suspended(sb); |
f55abc0f JK |
132 | } |
133 | ||
1da177e4 LT |
134 | /* |
135 | * Operations supported for diskquotas. | |
136 | */ | |
61e225dc | 137 | extern const struct dquot_operations dquot_operations; |
0d54b217 | 138 | extern const struct quotactl_ops vfs_quotactl_ops; |
1da177e4 LT |
139 | |
140 | #define sb_dquot_ops (&dquot_operations) | |
141 | #define sb_quotactl_ops (&vfs_quotactl_ops) | |
142 | ||
850b201b | 143 | /* Cannot be called inside a transaction */ |
b85f4b87 | 144 | static inline int vfs_dq_off(struct super_block *sb, int remount) |
1da177e4 LT |
145 | { |
146 | int ret = -ENOSYS; | |
147 | ||
0ff5af83 JK |
148 | if (sb->s_qcop && sb->s_qcop->quota_off) |
149 | ret = sb->s_qcop->quota_off(sb, -1, remount); | |
150 | return ret; | |
151 | } | |
152 | ||
1da177e4 LT |
153 | #else |
154 | ||
f55abc0f | 155 | static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type) |
03b06343 JK |
156 | { |
157 | return 0; | |
158 | } | |
159 | ||
f55abc0f | 160 | static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type) |
03b06343 JK |
161 | { |
162 | return 0; | |
163 | } | |
164 | ||
165 | static inline int sb_has_quota_suspended(struct super_block *sb, int type) | |
166 | { | |
167 | return 0; | |
168 | } | |
169 | ||
170 | static inline int sb_any_quota_suspended(struct super_block *sb) | |
171 | { | |
172 | return 0; | |
173 | } | |
74abb989 | 174 | |
f55abc0f JK |
175 | /* Does kernel know about any quota information for given sb + type? */ |
176 | static inline int sb_has_quota_loaded(struct super_block *sb, int type) | |
177 | { | |
178 | return 0; | |
179 | } | |
180 | ||
181 | static inline int sb_any_quota_loaded(struct super_block *sb) | |
182 | { | |
183 | return 0; | |
184 | } | |
185 | ||
186 | static inline int sb_has_quota_active(struct super_block *sb, int type) | |
187 | { | |
188 | return 0; | |
189 | } | |
190 | ||
191 | static inline int sb_any_quota_active(struct super_block *sb) | |
192 | { | |
193 | return 0; | |
194 | } | |
195 | ||
1da177e4 LT |
196 | /* |
197 | * NO-OP when quota not configured. | |
198 | */ | |
199 | #define sb_dquot_ops (NULL) | |
200 | #define sb_quotactl_ops (NULL) | |
50f8c370 | 201 | |
871a2931 | 202 | static inline void dquot_initialize(struct inode *inode) |
50f8c370 AM |
203 | { |
204 | } | |
205 | ||
9f754758 | 206 | static inline void dquot_drop(struct inode *inode) |
50f8c370 AM |
207 | { |
208 | } | |
209 | ||
63936dda | 210 | static inline int dquot_alloc_inode(const struct inode *inode) |
50f8c370 AM |
211 | { |
212 | return 0; | |
213 | } | |
214 | ||
63936dda | 215 | static inline void dquot_free_inode(const struct inode *inode) |
50f8c370 AM |
216 | { |
217 | } | |
218 | ||
b85f4b87 | 219 | static inline int vfs_dq_off(struct super_block *sb, int remount) |
50f8c370 AM |
220 | { |
221 | return 0; | |
222 | } | |
223 | ||
b85f4b87 | 224 | static inline int vfs_dq_quota_on_remount(struct super_block *sb) |
50f8c370 AM |
225 | { |
226 | return 0; | |
227 | } | |
228 | ||
b43fa828 | 229 | static inline int dquot_transfer(struct inode *inode, struct iattr *iattr) |
50f8c370 AM |
230 | { |
231 | return 0; | |
232 | } | |
233 | ||
5dd4056d CH |
234 | static inline int __dquot_alloc_space(struct inode *inode, qsize_t number, |
235 | int warn, int reserve) | |
1da177e4 | 236 | { |
5dd4056d CH |
237 | if (!reserve) |
238 | inode_add_bytes(inode, number); | |
1da177e4 LT |
239 | return 0; |
240 | } | |
241 | ||
5dd4056d CH |
242 | static inline void __dquot_free_space(struct inode *inode, qsize_t number, |
243 | int reserve) | |
1da177e4 | 244 | { |
5dd4056d CH |
245 | if (!reserve) |
246 | inode_sub_bytes(inode, number); | |
1da177e4 LT |
247 | } |
248 | ||
5dd4056d | 249 | static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number) |
1da177e4 | 250 | { |
5dd4056d | 251 | inode_add_bytes(inode, number); |
1da177e4 LT |
252 | return 0; |
253 | } | |
254 | ||
871a2931 CH |
255 | #define dquot_file_open generic_file_open |
256 | ||
5dd4056d CH |
257 | #endif /* CONFIG_QUOTA */ |
258 | ||
259 | static inline int dquot_alloc_space_nodirty(struct inode *inode, qsize_t nr) | |
1da177e4 | 260 | { |
5dd4056d | 261 | return __dquot_alloc_space(inode, nr, 1, 0); |
1da177e4 LT |
262 | } |
263 | ||
5dd4056d | 264 | static inline int dquot_alloc_space(struct inode *inode, qsize_t nr) |
f18df228 | 265 | { |
5dd4056d CH |
266 | int ret; |
267 | ||
268 | ret = dquot_alloc_space_nodirty(inode, nr); | |
269 | if (!ret) | |
270 | mark_inode_dirty(inode); | |
271 | return ret; | |
f18df228 MC |
272 | } |
273 | ||
5dd4056d | 274 | static inline int dquot_alloc_block_nodirty(struct inode *inode, qsize_t nr) |
740d9dcd | 275 | { |
5dd4056d | 276 | return dquot_alloc_space_nodirty(inode, nr << inode->i_blkbits); |
740d9dcd MC |
277 | } |
278 | ||
5dd4056d | 279 | static inline int dquot_alloc_block(struct inode *inode, qsize_t nr) |
740d9dcd | 280 | { |
5dd4056d | 281 | return dquot_alloc_space(inode, nr << inode->i_blkbits); |
740d9dcd MC |
282 | } |
283 | ||
5dd4056d | 284 | static inline int dquot_prealloc_block_nodirty(struct inode *inode, qsize_t nr) |
1da177e4 | 285 | { |
5dd4056d | 286 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0, 0); |
1da177e4 LT |
287 | } |
288 | ||
5dd4056d | 289 | static inline int dquot_prealloc_block(struct inode *inode, qsize_t nr) |
1da177e4 | 290 | { |
5dd4056d | 291 | int ret; |
1da177e4 | 292 | |
5dd4056d CH |
293 | ret = dquot_prealloc_block_nodirty(inode, nr); |
294 | if (!ret) | |
295 | mark_inode_dirty(inode); | |
296 | return ret; | |
03f6e92b JK |
297 | } |
298 | ||
5dd4056d | 299 | static inline int dquot_reserve_block(struct inode *inode, qsize_t nr) |
03f6e92b | 300 | { |
5dd4056d | 301 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, 1, 1); |
03f6e92b JK |
302 | } |
303 | ||
5dd4056d | 304 | static inline int dquot_claim_block(struct inode *inode, qsize_t nr) |
03f6e92b | 305 | { |
5dd4056d | 306 | int ret; |
03f6e92b | 307 | |
5dd4056d CH |
308 | ret = dquot_claim_space_nodirty(inode, nr << inode->i_blkbits); |
309 | if (!ret) | |
310 | mark_inode_dirty(inode); | |
311 | return ret; | |
03f6e92b JK |
312 | } |
313 | ||
5dd4056d | 314 | static inline void dquot_free_space_nodirty(struct inode *inode, qsize_t nr) |
f18df228 | 315 | { |
5dd4056d | 316 | __dquot_free_space(inode, nr, 0); |
f18df228 MC |
317 | } |
318 | ||
5dd4056d | 319 | static inline void dquot_free_space(struct inode *inode, qsize_t nr) |
740d9dcd | 320 | { |
5dd4056d CH |
321 | dquot_free_space_nodirty(inode, nr); |
322 | mark_inode_dirty(inode); | |
740d9dcd MC |
323 | } |
324 | ||
5dd4056d | 325 | static inline void dquot_free_block_nodirty(struct inode *inode, qsize_t nr) |
740d9dcd | 326 | { |
5dd4056d | 327 | dquot_free_space_nodirty(inode, nr << inode->i_blkbits); |
740d9dcd MC |
328 | } |
329 | ||
5dd4056d | 330 | static inline void dquot_free_block(struct inode *inode, qsize_t nr) |
03f6e92b | 331 | { |
5dd4056d | 332 | dquot_free_space(inode, nr << inode->i_blkbits); |
03f6e92b JK |
333 | } |
334 | ||
5dd4056d CH |
335 | static inline void dquot_release_reservation_block(struct inode *inode, |
336 | qsize_t nr) | |
03f6e92b | 337 | { |
5dd4056d | 338 | __dquot_free_space(inode, nr << inode->i_blkbits, 1); |
03f6e92b | 339 | } |
1da177e4 LT |
340 | |
341 | #endif /* _LINUX_QUOTAOPS_ */ |