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 | ||
1da177e4 LT |
148 | /* |
149 | * Operations supported for diskquotas. | |
150 | */ | |
61e225dc | 151 | extern const struct dquot_operations dquot_operations; |
287a8095 | 152 | extern const struct quotactl_ops dquot_quotactl_ops; |
0ff5af83 | 153 | |
1da177e4 LT |
154 | #else |
155 | ||
f55abc0f | 156 | static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type) |
03b06343 JK |
157 | { |
158 | return 0; | |
159 | } | |
160 | ||
f55abc0f | 161 | static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type) |
03b06343 JK |
162 | { |
163 | return 0; | |
164 | } | |
165 | ||
166 | static inline int sb_has_quota_suspended(struct super_block *sb, int type) | |
167 | { | |
168 | return 0; | |
169 | } | |
170 | ||
171 | static inline int sb_any_quota_suspended(struct super_block *sb) | |
172 | { | |
173 | return 0; | |
174 | } | |
74abb989 | 175 | |
f55abc0f JK |
176 | /* Does kernel know about any quota information for given sb + type? */ |
177 | static inline int sb_has_quota_loaded(struct super_block *sb, int type) | |
178 | { | |
179 | return 0; | |
180 | } | |
181 | ||
182 | static inline int sb_any_quota_loaded(struct super_block *sb) | |
183 | { | |
184 | return 0; | |
185 | } | |
186 | ||
187 | static inline int sb_has_quota_active(struct super_block *sb, int type) | |
188 | { | |
189 | return 0; | |
190 | } | |
191 | ||
871a2931 | 192 | static inline void dquot_initialize(struct inode *inode) |
50f8c370 AM |
193 | { |
194 | } | |
195 | ||
9f754758 | 196 | static inline void dquot_drop(struct inode *inode) |
50f8c370 AM |
197 | { |
198 | } | |
199 | ||
63936dda | 200 | static inline int dquot_alloc_inode(const struct inode *inode) |
50f8c370 AM |
201 | { |
202 | return 0; | |
203 | } | |
204 | ||
63936dda | 205 | static inline void dquot_free_inode(const struct inode *inode) |
50f8c370 AM |
206 | { |
207 | } | |
208 | ||
b43fa828 | 209 | static inline int dquot_transfer(struct inode *inode, struct iattr *iattr) |
50f8c370 AM |
210 | { |
211 | return 0; | |
212 | } | |
213 | ||
5dd4056d | 214 | static inline int __dquot_alloc_space(struct inode *inode, qsize_t number, |
56246f9a | 215 | int flags) |
1da177e4 | 216 | { |
56246f9a | 217 | if (!(flags & DQUOT_SPACE_RESERVE)) |
5dd4056d | 218 | inode_add_bytes(inode, number); |
1da177e4 LT |
219 | return 0; |
220 | } | |
221 | ||
5dd4056d | 222 | static inline void __dquot_free_space(struct inode *inode, qsize_t number, |
56246f9a | 223 | int flags) |
1da177e4 | 224 | { |
56246f9a | 225 | if (!(flags & DQUOT_SPACE_RESERVE)) |
5dd4056d | 226 | inode_sub_bytes(inode, number); |
1da177e4 LT |
227 | } |
228 | ||
5dd4056d | 229 | static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number) |
1da177e4 | 230 | { |
5dd4056d | 231 | inode_add_bytes(inode, number); |
1da177e4 LT |
232 | return 0; |
233 | } | |
234 | ||
0f0dd62f CH |
235 | static inline int dquot_disable(struct super_block *sb, int type, |
236 | unsigned int flags) | |
237 | { | |
238 | return 0; | |
239 | } | |
240 | ||
241 | static inline int dquot_suspend(struct super_block *sb, int type) | |
242 | { | |
243 | return 0; | |
244 | } | |
245 | ||
246 | static inline int dquot_resume(struct super_block *sb, int type) | |
247 | { | |
248 | return 0; | |
1da177e4 LT |
249 | } |
250 | ||
871a2931 CH |
251 | #define dquot_file_open generic_file_open |
252 | ||
5dd4056d CH |
253 | #endif /* CONFIG_QUOTA */ |
254 | ||
255 | static inline int dquot_alloc_space_nodirty(struct inode *inode, qsize_t nr) | |
1da177e4 | 256 | { |
56246f9a | 257 | return __dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN); |
1da177e4 LT |
258 | } |
259 | ||
0e05842b ES |
260 | static inline void dquot_alloc_space_nofail(struct inode *inode, qsize_t nr) |
261 | { | |
262 | __dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN|DQUOT_SPACE_NOFAIL); | |
263 | mark_inode_dirty(inode); | |
1da177e4 LT |
264 | } |
265 | ||
5dd4056d | 266 | static inline int dquot_alloc_space(struct inode *inode, qsize_t nr) |
f18df228 | 267 | { |
5dd4056d CH |
268 | int ret; |
269 | ||
270 | ret = dquot_alloc_space_nodirty(inode, nr); | |
271 | if (!ret) | |
272 | mark_inode_dirty(inode); | |
273 | return ret; | |
f18df228 MC |
274 | } |
275 | ||
5dd4056d | 276 | static inline int dquot_alloc_block_nodirty(struct inode *inode, qsize_t nr) |
740d9dcd | 277 | { |
5dd4056d | 278 | return dquot_alloc_space_nodirty(inode, nr << inode->i_blkbits); |
740d9dcd MC |
279 | } |
280 | ||
0e05842b ES |
281 | static inline void dquot_alloc_block_nofail(struct inode *inode, qsize_t nr) |
282 | { | |
283 | dquot_alloc_space_nofail(inode, nr << inode->i_blkbits); | |
284 | } | |
285 | ||
5dd4056d | 286 | static inline int dquot_alloc_block(struct inode *inode, qsize_t nr) |
740d9dcd | 287 | { |
5dd4056d | 288 | return dquot_alloc_space(inode, nr << inode->i_blkbits); |
740d9dcd MC |
289 | } |
290 | ||
5dd4056d | 291 | static inline int dquot_prealloc_block_nodirty(struct inode *inode, qsize_t nr) |
1da177e4 | 292 | { |
56246f9a | 293 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0); |
1da177e4 LT |
294 | } |
295 | ||
5dd4056d | 296 | static inline int dquot_prealloc_block(struct inode *inode, qsize_t nr) |
1da177e4 | 297 | { |
5dd4056d | 298 | int ret; |
1da177e4 | 299 | |
5dd4056d CH |
300 | ret = dquot_prealloc_block_nodirty(inode, nr); |
301 | if (!ret) | |
302 | mark_inode_dirty(inode); | |
303 | return ret; | |
03f6e92b JK |
304 | } |
305 | ||
5dd4056d | 306 | static inline int dquot_reserve_block(struct inode *inode, qsize_t nr) |
03f6e92b | 307 | { |
56246f9a ES |
308 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, |
309 | DQUOT_SPACE_WARN|DQUOT_SPACE_RESERVE); | |
03f6e92b JK |
310 | } |
311 | ||
5dd4056d | 312 | static inline int dquot_claim_block(struct inode *inode, qsize_t nr) |
03f6e92b | 313 | { |
5dd4056d | 314 | int ret; |
03f6e92b | 315 | |
5dd4056d CH |
316 | ret = dquot_claim_space_nodirty(inode, nr << inode->i_blkbits); |
317 | if (!ret) | |
318 | mark_inode_dirty(inode); | |
319 | return ret; | |
03f6e92b JK |
320 | } |
321 | ||
5dd4056d | 322 | static inline void dquot_free_space_nodirty(struct inode *inode, qsize_t nr) |
f18df228 | 323 | { |
5dd4056d | 324 | __dquot_free_space(inode, nr, 0); |
f18df228 MC |
325 | } |
326 | ||
5dd4056d | 327 | static inline void dquot_free_space(struct inode *inode, qsize_t nr) |
740d9dcd | 328 | { |
5dd4056d CH |
329 | dquot_free_space_nodirty(inode, nr); |
330 | mark_inode_dirty(inode); | |
740d9dcd MC |
331 | } |
332 | ||
5dd4056d | 333 | static inline void dquot_free_block_nodirty(struct inode *inode, qsize_t nr) |
740d9dcd | 334 | { |
5dd4056d | 335 | dquot_free_space_nodirty(inode, nr << inode->i_blkbits); |
740d9dcd MC |
336 | } |
337 | ||
5dd4056d | 338 | static inline void dquot_free_block(struct inode *inode, qsize_t nr) |
03f6e92b | 339 | { |
5dd4056d | 340 | dquot_free_space(inode, nr << inode->i_blkbits); |
03f6e92b JK |
341 | } |
342 | ||
5dd4056d CH |
343 | static inline void dquot_release_reservation_block(struct inode *inode, |
344 | qsize_t nr) | |
03f6e92b | 345 | { |
56246f9a | 346 | __dquot_free_space(inode, nr << inode->i_blkbits, DQUOT_SPACE_RESERVE); |
03f6e92b | 347 | } |
1da177e4 LT |
348 | |
349 | #endif /* _LINUX_QUOTAOPS_ */ |