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 | ||
56246f9a ES |
12 | #define DQUOT_SPACE_WARN 0x1 |
13 | #define DQUOT_SPACE_RESERVE 0x2 | |
0e05842b | 14 | #define DQUOT_SPACE_NOFAIL 0x4 |
56246f9a | 15 | |
03b06343 JK |
16 | static inline struct quota_info *sb_dqopt(struct super_block *sb) |
17 | { | |
18 | return &sb->s_dquot; | |
19 | } | |
74abb989 | 20 | |
12755627 DM |
21 | /* i_mutex must being held */ |
22 | static inline bool is_quota_modification(struct inode *inode, struct iattr *ia) | |
23 | { | |
24 | return (ia->ia_valid & ATTR_SIZE && ia->ia_size != inode->i_size) || | |
25 | (ia->ia_valid & ATTR_UID && ia->ia_uid != inode->i_uid) || | |
26 | (ia->ia_valid & ATTR_GID && ia->ia_gid != inode->i_gid); | |
27 | } | |
28 | ||
1da177e4 LT |
29 | #if defined(CONFIG_QUOTA) |
30 | ||
31 | /* | |
32 | * declaration of quota_function calls in kernel. | |
33 | */ | |
c469070a DM |
34 | void inode_add_rsv_space(struct inode *inode, qsize_t number); |
35 | void inode_claim_rsv_space(struct inode *inode, qsize_t number); | |
36 | void inode_sub_rsv_space(struct inode *inode, qsize_t number); | |
37 | ||
871a2931 | 38 | void dquot_initialize(struct inode *inode); |
9f754758 | 39 | void dquot_drop(struct inode *inode); |
3d9ea253 JK |
40 | struct dquot *dqget(struct super_block *sb, unsigned int id, int type); |
41 | void dqput(struct dquot *dquot); | |
12c77527 JK |
42 | int dquot_scan_active(struct super_block *sb, |
43 | int (*fn)(struct dquot *dquot, unsigned long priv), | |
44 | unsigned long priv); | |
7d9056ba JK |
45 | struct dquot *dquot_alloc(struct super_block *sb, int type); |
46 | void dquot_destroy(struct dquot *dquot); | |
b85f4b87 | 47 | |
56246f9a ES |
48 | int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags); |
49 | void __dquot_free_space(struct inode *inode, qsize_t number, int flags); | |
b85f4b87 | 50 | |
63936dda | 51 | int dquot_alloc_inode(const struct inode *inode); |
740d9dcd | 52 | |
5dd4056d | 53 | int dquot_claim_space_nodirty(struct inode *inode, qsize_t number); |
63936dda | 54 | void dquot_free_inode(const struct inode *inode); |
b85f4b87 | 55 | |
0f0dd62f CH |
56 | int dquot_disable(struct super_block *sb, int type, unsigned int flags); |
57 | /* Suspend quotas on remount RO */ | |
58 | static inline int dquot_suspend(struct super_block *sb, int type) | |
59 | { | |
60 | return dquot_disable(sb, type, DQUOT_SUSPENDED); | |
61 | } | |
62 | int dquot_resume(struct super_block *sb, int type); | |
63 | ||
b85f4b87 JK |
64 | int dquot_commit(struct dquot *dquot); |
65 | int dquot_acquire(struct dquot *dquot); | |
66 | int dquot_release(struct dquot *dquot); | |
67 | int dquot_commit_info(struct super_block *sb, int type); | |
68 | int dquot_mark_dquot_dirty(struct dquot *dquot); | |
69 | ||
907f4554 CH |
70 | int dquot_file_open(struct inode *inode, struct file *file); |
71 | ||
287a8095 | 72 | int dquot_quota_on(struct super_block *sb, int type, int format_id, |
307ae18a | 73 | char *path); |
287a8095 | 74 | int dquot_enable(struct inode *inode, int type, int format_id, |
f55abc0f | 75 | unsigned int flags); |
287a8095 | 76 | int dquot_quota_on_path(struct super_block *sb, int type, int format_id, |
77e69dac | 77 | struct path *path); |
287a8095 | 78 | int dquot_quota_on_mount(struct super_block *sb, char *qf_name, |
b85f4b87 | 79 | int format_id, int type); |
287a8095 CH |
80 | int dquot_quota_off(struct super_block *sb, int type); |
81 | int dquot_quota_sync(struct super_block *sb, int type, int wait); | |
82 | int dquot_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii); | |
83 | int dquot_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii); | |
84 | int dquot_get_dqblk(struct super_block *sb, int type, qid_t id, | |
b9b2dd36 | 85 | struct fs_disk_quota *di); |
287a8095 | 86 | int dquot_set_dqblk(struct super_block *sb, int type, qid_t id, |
c472b432 | 87 | struct fs_disk_quota *di); |
b85f4b87 | 88 | |
bc8e5f07 | 89 | int __dquot_transfer(struct inode *inode, struct dquot **transfer_to); |
b43fa828 | 90 | int dquot_transfer(struct inode *inode, struct iattr *iattr); |
1da177e4 | 91 | |
03b06343 JK |
92 | static inline struct mem_dqinfo *sb_dqinfo(struct super_block *sb, int type) |
93 | { | |
94 | return sb_dqopt(sb)->info + type; | |
95 | } | |
74abb989 JK |
96 | |
97 | /* | |
98 | * Functions for checking status of quota | |
99 | */ | |
100 | ||
ad1e6e8d | 101 | static inline bool sb_has_quota_usage_enabled(struct super_block *sb, int type) |
03b06343 | 102 | { |
f55abc0f JK |
103 | return sb_dqopt(sb)->flags & |
104 | dquot_state_flag(DQUOT_USAGE_ENABLED, type); | |
03b06343 | 105 | } |
74abb989 | 106 | |
ad1e6e8d | 107 | static inline bool sb_has_quota_limits_enabled(struct super_block *sb, int type) |
03b06343 | 108 | { |
f55abc0f JK |
109 | return sb_dqopt(sb)->flags & |
110 | dquot_state_flag(DQUOT_LIMITS_ENABLED, type); | |
03b06343 | 111 | } |
74abb989 | 112 | |
ad1e6e8d | 113 | static inline bool sb_has_quota_suspended(struct super_block *sb, int type) |
03b06343 | 114 | { |
f55abc0f JK |
115 | return sb_dqopt(sb)->flags & |
116 | dquot_state_flag(DQUOT_SUSPENDED, type); | |
03b06343 | 117 | } |
74abb989 | 118 | |
ad1e6e8d | 119 | static inline unsigned sb_any_quota_suspended(struct super_block *sb) |
03b06343 | 120 | { |
ad1e6e8d DM |
121 | unsigned type, tmsk = 0; |
122 | for (type = 0; type < MAXQUOTAS; type++) | |
123 | tmsk |= sb_has_quota_suspended(sb, type) << type; | |
124 | return tmsk; | |
03b06343 | 125 | } |
74abb989 | 126 | |
f55abc0f | 127 | /* Does kernel know about any quota information for given sb + type? */ |
ad1e6e8d | 128 | static inline bool sb_has_quota_loaded(struct super_block *sb, int type) |
f55abc0f JK |
129 | { |
130 | /* Currently if anything is on, then quota usage is on as well */ | |
131 | return sb_has_quota_usage_enabled(sb, type); | |
132 | } | |
133 | ||
ad1e6e8d | 134 | static inline unsigned sb_any_quota_loaded(struct super_block *sb) |
f55abc0f | 135 | { |
ad1e6e8d DM |
136 | unsigned type, tmsk = 0; |
137 | for (type = 0; type < MAXQUOTAS; type++) | |
138 | tmsk |= sb_has_quota_loaded(sb, type) << type; | |
139 | return tmsk; | |
f55abc0f JK |
140 | } |
141 | ||
ad1e6e8d | 142 | static inline bool sb_has_quota_active(struct super_block *sb, int type) |
f55abc0f JK |
143 | { |
144 | return sb_has_quota_loaded(sb, type) && | |
145 | !sb_has_quota_suspended(sb, type); | |
146 | } | |
147 | ||
ad1e6e8d | 148 | static inline unsigned sb_any_quota_active(struct super_block *sb) |
f55abc0f | 149 | { |
ad1e6e8d | 150 | return sb_any_quota_loaded(sb) & ~sb_any_quota_suspended(sb); |
f55abc0f JK |
151 | } |
152 | ||
1da177e4 LT |
153 | /* |
154 | * Operations supported for diskquotas. | |
155 | */ | |
61e225dc | 156 | extern const struct dquot_operations dquot_operations; |
287a8095 | 157 | extern const struct quotactl_ops dquot_quotactl_ops; |
0ff5af83 | 158 | |
1da177e4 LT |
159 | #else |
160 | ||
f55abc0f | 161 | static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type) |
03b06343 JK |
162 | { |
163 | return 0; | |
164 | } | |
165 | ||
f55abc0f | 166 | static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type) |
03b06343 JK |
167 | { |
168 | return 0; | |
169 | } | |
170 | ||
171 | static inline int sb_has_quota_suspended(struct super_block *sb, int type) | |
172 | { | |
173 | return 0; | |
174 | } | |
175 | ||
176 | static inline int sb_any_quota_suspended(struct super_block *sb) | |
177 | { | |
178 | return 0; | |
179 | } | |
74abb989 | 180 | |
f55abc0f JK |
181 | /* Does kernel know about any quota information for given sb + type? */ |
182 | static inline int sb_has_quota_loaded(struct super_block *sb, int type) | |
183 | { | |
184 | return 0; | |
185 | } | |
186 | ||
187 | static inline int sb_any_quota_loaded(struct super_block *sb) | |
188 | { | |
189 | return 0; | |
190 | } | |
191 | ||
192 | static inline int sb_has_quota_active(struct super_block *sb, int type) | |
193 | { | |
194 | return 0; | |
195 | } | |
196 | ||
197 | static inline int sb_any_quota_active(struct super_block *sb) | |
198 | { | |
199 | return 0; | |
200 | } | |
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 | ||
b43fa828 | 219 | static inline int dquot_transfer(struct inode *inode, struct iattr *iattr) |
50f8c370 AM |
220 | { |
221 | return 0; | |
222 | } | |
223 | ||
5dd4056d | 224 | static inline int __dquot_alloc_space(struct inode *inode, qsize_t number, |
56246f9a | 225 | int flags) |
1da177e4 | 226 | { |
56246f9a | 227 | if (!(flags & DQUOT_SPACE_RESERVE)) |
5dd4056d | 228 | inode_add_bytes(inode, number); |
1da177e4 LT |
229 | return 0; |
230 | } | |
231 | ||
5dd4056d | 232 | static inline void __dquot_free_space(struct inode *inode, qsize_t number, |
56246f9a | 233 | int flags) |
1da177e4 | 234 | { |
56246f9a | 235 | if (!(flags & DQUOT_SPACE_RESERVE)) |
5dd4056d | 236 | inode_sub_bytes(inode, number); |
1da177e4 LT |
237 | } |
238 | ||
5dd4056d | 239 | static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number) |
1da177e4 | 240 | { |
5dd4056d | 241 | inode_add_bytes(inode, number); |
1da177e4 LT |
242 | return 0; |
243 | } | |
244 | ||
0f0dd62f CH |
245 | static inline int dquot_disable(struct super_block *sb, int type, |
246 | unsigned int flags) | |
247 | { | |
248 | return 0; | |
249 | } | |
250 | ||
251 | static inline int dquot_suspend(struct super_block *sb, int type) | |
252 | { | |
253 | return 0; | |
254 | } | |
255 | ||
256 | static inline int dquot_resume(struct super_block *sb, int type) | |
257 | { | |
258 | return 0; | |
1da177e4 LT |
259 | } |
260 | ||
871a2931 CH |
261 | #define dquot_file_open generic_file_open |
262 | ||
5dd4056d CH |
263 | #endif /* CONFIG_QUOTA */ |
264 | ||
265 | static inline int dquot_alloc_space_nodirty(struct inode *inode, qsize_t nr) | |
1da177e4 | 266 | { |
56246f9a | 267 | return __dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN); |
1da177e4 LT |
268 | } |
269 | ||
0e05842b ES |
270 | static inline void dquot_alloc_space_nofail(struct inode *inode, qsize_t nr) |
271 | { | |
272 | __dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN|DQUOT_SPACE_NOFAIL); | |
273 | mark_inode_dirty(inode); | |
1da177e4 LT |
274 | } |
275 | ||
5dd4056d | 276 | static inline int dquot_alloc_space(struct inode *inode, qsize_t nr) |
f18df228 | 277 | { |
5dd4056d CH |
278 | int ret; |
279 | ||
280 | ret = dquot_alloc_space_nodirty(inode, nr); | |
281 | if (!ret) | |
282 | mark_inode_dirty(inode); | |
283 | return ret; | |
f18df228 MC |
284 | } |
285 | ||
5dd4056d | 286 | static inline int dquot_alloc_block_nodirty(struct inode *inode, qsize_t nr) |
740d9dcd | 287 | { |
5dd4056d | 288 | return dquot_alloc_space_nodirty(inode, nr << inode->i_blkbits); |
740d9dcd MC |
289 | } |
290 | ||
0e05842b ES |
291 | static inline void dquot_alloc_block_nofail(struct inode *inode, qsize_t nr) |
292 | { | |
293 | dquot_alloc_space_nofail(inode, nr << inode->i_blkbits); | |
294 | } | |
295 | ||
5dd4056d | 296 | static inline int dquot_alloc_block(struct inode *inode, qsize_t nr) |
740d9dcd | 297 | { |
5dd4056d | 298 | return dquot_alloc_space(inode, nr << inode->i_blkbits); |
740d9dcd MC |
299 | } |
300 | ||
5dd4056d | 301 | static inline int dquot_prealloc_block_nodirty(struct inode *inode, qsize_t nr) |
1da177e4 | 302 | { |
56246f9a | 303 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0); |
1da177e4 LT |
304 | } |
305 | ||
5dd4056d | 306 | static inline int dquot_prealloc_block(struct inode *inode, qsize_t nr) |
1da177e4 | 307 | { |
5dd4056d | 308 | int ret; |
1da177e4 | 309 | |
5dd4056d CH |
310 | ret = dquot_prealloc_block_nodirty(inode, nr); |
311 | if (!ret) | |
312 | mark_inode_dirty(inode); | |
313 | return ret; | |
03f6e92b JK |
314 | } |
315 | ||
5dd4056d | 316 | static inline int dquot_reserve_block(struct inode *inode, qsize_t nr) |
03f6e92b | 317 | { |
56246f9a ES |
318 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, |
319 | DQUOT_SPACE_WARN|DQUOT_SPACE_RESERVE); | |
03f6e92b JK |
320 | } |
321 | ||
5dd4056d | 322 | static inline int dquot_claim_block(struct inode *inode, qsize_t nr) |
03f6e92b | 323 | { |
5dd4056d | 324 | int ret; |
03f6e92b | 325 | |
5dd4056d CH |
326 | ret = dquot_claim_space_nodirty(inode, nr << inode->i_blkbits); |
327 | if (!ret) | |
328 | mark_inode_dirty(inode); | |
329 | return ret; | |
03f6e92b JK |
330 | } |
331 | ||
5dd4056d | 332 | static inline void dquot_free_space_nodirty(struct inode *inode, qsize_t nr) |
f18df228 | 333 | { |
5dd4056d | 334 | __dquot_free_space(inode, nr, 0); |
f18df228 MC |
335 | } |
336 | ||
5dd4056d | 337 | static inline void dquot_free_space(struct inode *inode, qsize_t nr) |
740d9dcd | 338 | { |
5dd4056d CH |
339 | dquot_free_space_nodirty(inode, nr); |
340 | mark_inode_dirty(inode); | |
740d9dcd MC |
341 | } |
342 | ||
5dd4056d | 343 | static inline void dquot_free_block_nodirty(struct inode *inode, qsize_t nr) |
740d9dcd | 344 | { |
5dd4056d | 345 | dquot_free_space_nodirty(inode, nr << inode->i_blkbits); |
740d9dcd MC |
346 | } |
347 | ||
5dd4056d | 348 | static inline void dquot_free_block(struct inode *inode, qsize_t nr) |
03f6e92b | 349 | { |
5dd4056d | 350 | dquot_free_space(inode, nr << inode->i_blkbits); |
03f6e92b JK |
351 | } |
352 | ||
5dd4056d CH |
353 | static inline void dquot_release_reservation_block(struct inode *inode, |
354 | qsize_t nr) | |
03f6e92b | 355 | { |
56246f9a | 356 | __dquot_free_space(inode, nr << inode->i_blkbits, DQUOT_SPACE_RESERVE); |
03f6e92b | 357 | } |
1da177e4 LT |
358 | |
359 | #endif /* _LINUX_QUOTAOPS_ */ |