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 | ||
fb5ffb0e JZ |
31 | #define quota_error(sb, fmt, args...) \ |
32 | __quota_error((sb), __func__, fmt , ## args) | |
33 | ||
34 | extern void __quota_error(struct super_block *sb, const char *func, | |
35 | const char *fmt, ...); | |
36 | ||
1da177e4 LT |
37 | /* |
38 | * declaration of quota_function calls in kernel. | |
39 | */ | |
c469070a DM |
40 | void inode_add_rsv_space(struct inode *inode, qsize_t number); |
41 | void inode_claim_rsv_space(struct inode *inode, qsize_t number); | |
42 | void inode_sub_rsv_space(struct inode *inode, qsize_t number); | |
43 | ||
871a2931 | 44 | void dquot_initialize(struct inode *inode); |
9f754758 | 45 | void dquot_drop(struct inode *inode); |
3d9ea253 JK |
46 | struct dquot *dqget(struct super_block *sb, unsigned int id, int type); |
47 | void dqput(struct dquot *dquot); | |
12c77527 JK |
48 | int dquot_scan_active(struct super_block *sb, |
49 | int (*fn)(struct dquot *dquot, unsigned long priv), | |
50 | unsigned long priv); | |
7d9056ba JK |
51 | struct dquot *dquot_alloc(struct super_block *sb, int type); |
52 | void dquot_destroy(struct dquot *dquot); | |
b85f4b87 | 53 | |
56246f9a ES |
54 | int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags); |
55 | void __dquot_free_space(struct inode *inode, qsize_t number, int flags); | |
b85f4b87 | 56 | |
63936dda | 57 | int dquot_alloc_inode(const struct inode *inode); |
740d9dcd | 58 | |
5dd4056d | 59 | int dquot_claim_space_nodirty(struct inode *inode, qsize_t number); |
63936dda | 60 | void dquot_free_inode(const struct inode *inode); |
b85f4b87 | 61 | |
0f0dd62f CH |
62 | int dquot_disable(struct super_block *sb, int type, unsigned int flags); |
63 | /* Suspend quotas on remount RO */ | |
64 | static inline int dquot_suspend(struct super_block *sb, int type) | |
65 | { | |
66 | return dquot_disable(sb, type, DQUOT_SUSPENDED); | |
67 | } | |
68 | int dquot_resume(struct super_block *sb, int type); | |
69 | ||
b85f4b87 JK |
70 | int dquot_commit(struct dquot *dquot); |
71 | int dquot_acquire(struct dquot *dquot); | |
72 | int dquot_release(struct dquot *dquot); | |
73 | int dquot_commit_info(struct super_block *sb, int type); | |
74 | int dquot_mark_dquot_dirty(struct dquot *dquot); | |
75 | ||
907f4554 CH |
76 | int dquot_file_open(struct inode *inode, struct file *file); |
77 | ||
287a8095 | 78 | int dquot_quota_on(struct super_block *sb, int type, int format_id, |
307ae18a | 79 | char *path); |
287a8095 | 80 | int dquot_enable(struct inode *inode, int type, int format_id, |
f55abc0f | 81 | unsigned int flags); |
287a8095 | 82 | int dquot_quota_on_path(struct super_block *sb, int type, int format_id, |
77e69dac | 83 | struct path *path); |
287a8095 | 84 | int dquot_quota_on_mount(struct super_block *sb, char *qf_name, |
b85f4b87 | 85 | int format_id, int type); |
287a8095 CH |
86 | int dquot_quota_off(struct super_block *sb, int type); |
87 | int dquot_quota_sync(struct super_block *sb, int type, int wait); | |
88 | int dquot_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii); | |
89 | int dquot_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii); | |
90 | int dquot_get_dqblk(struct super_block *sb, int type, qid_t id, | |
b9b2dd36 | 91 | struct fs_disk_quota *di); |
287a8095 | 92 | int dquot_set_dqblk(struct super_block *sb, int type, qid_t id, |
c472b432 | 93 | struct fs_disk_quota *di); |
b85f4b87 | 94 | |
bc8e5f07 | 95 | int __dquot_transfer(struct inode *inode, struct dquot **transfer_to); |
b43fa828 | 96 | int dquot_transfer(struct inode *inode, struct iattr *iattr); |
1da177e4 | 97 | |
03b06343 JK |
98 | static inline struct mem_dqinfo *sb_dqinfo(struct super_block *sb, int type) |
99 | { | |
100 | return sb_dqopt(sb)->info + type; | |
101 | } | |
74abb989 JK |
102 | |
103 | /* | |
104 | * Functions for checking status of quota | |
105 | */ | |
106 | ||
ad1e6e8d | 107 | static inline bool sb_has_quota_usage_enabled(struct super_block *sb, int type) |
03b06343 | 108 | { |
f55abc0f JK |
109 | return sb_dqopt(sb)->flags & |
110 | dquot_state_flag(DQUOT_USAGE_ENABLED, type); | |
03b06343 | 111 | } |
74abb989 | 112 | |
ad1e6e8d | 113 | static inline bool sb_has_quota_limits_enabled(struct super_block *sb, int type) |
03b06343 | 114 | { |
f55abc0f JK |
115 | return sb_dqopt(sb)->flags & |
116 | dquot_state_flag(DQUOT_LIMITS_ENABLED, type); | |
03b06343 | 117 | } |
74abb989 | 118 | |
ad1e6e8d | 119 | static inline bool sb_has_quota_suspended(struct super_block *sb, int type) |
03b06343 | 120 | { |
f55abc0f JK |
121 | return sb_dqopt(sb)->flags & |
122 | dquot_state_flag(DQUOT_SUSPENDED, type); | |
03b06343 | 123 | } |
74abb989 | 124 | |
ad1e6e8d | 125 | static inline unsigned sb_any_quota_suspended(struct super_block *sb) |
03b06343 | 126 | { |
ad1e6e8d DM |
127 | unsigned type, tmsk = 0; |
128 | for (type = 0; type < MAXQUOTAS; type++) | |
129 | tmsk |= sb_has_quota_suspended(sb, type) << type; | |
130 | return tmsk; | |
03b06343 | 131 | } |
74abb989 | 132 | |
f55abc0f | 133 | /* Does kernel know about any quota information for given sb + type? */ |
ad1e6e8d | 134 | static inline bool sb_has_quota_loaded(struct super_block *sb, int type) |
f55abc0f JK |
135 | { |
136 | /* Currently if anything is on, then quota usage is on as well */ | |
137 | return sb_has_quota_usage_enabled(sb, type); | |
138 | } | |
139 | ||
ad1e6e8d | 140 | static inline unsigned sb_any_quota_loaded(struct super_block *sb) |
f55abc0f | 141 | { |
ad1e6e8d DM |
142 | unsigned type, tmsk = 0; |
143 | for (type = 0; type < MAXQUOTAS; type++) | |
144 | tmsk |= sb_has_quota_loaded(sb, type) << type; | |
145 | return tmsk; | |
f55abc0f JK |
146 | } |
147 | ||
ad1e6e8d | 148 | static inline bool sb_has_quota_active(struct super_block *sb, int type) |
f55abc0f JK |
149 | { |
150 | return sb_has_quota_loaded(sb, type) && | |
151 | !sb_has_quota_suspended(sb, type); | |
152 | } | |
153 | ||
1da177e4 LT |
154 | /* |
155 | * Operations supported for diskquotas. | |
156 | */ | |
61e225dc | 157 | extern const struct dquot_operations dquot_operations; |
287a8095 | 158 | extern const struct quotactl_ops dquot_quotactl_ops; |
0ff5af83 | 159 | |
1da177e4 LT |
160 | #else |
161 | ||
f55abc0f | 162 | static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type) |
03b06343 JK |
163 | { |
164 | return 0; | |
165 | } | |
166 | ||
f55abc0f | 167 | static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type) |
03b06343 JK |
168 | { |
169 | return 0; | |
170 | } | |
171 | ||
172 | static inline int sb_has_quota_suspended(struct super_block *sb, int type) | |
173 | { | |
174 | return 0; | |
175 | } | |
176 | ||
177 | static inline int sb_any_quota_suspended(struct super_block *sb) | |
178 | { | |
179 | return 0; | |
180 | } | |
74abb989 | 181 | |
f55abc0f JK |
182 | /* Does kernel know about any quota information for given sb + type? */ |
183 | static inline int sb_has_quota_loaded(struct super_block *sb, int type) | |
184 | { | |
185 | return 0; | |
186 | } | |
187 | ||
188 | static inline int sb_any_quota_loaded(struct super_block *sb) | |
189 | { | |
190 | return 0; | |
191 | } | |
192 | ||
193 | static inline int sb_has_quota_active(struct super_block *sb, int type) | |
194 | { | |
195 | return 0; | |
196 | } | |
197 | ||
871a2931 | 198 | static inline void dquot_initialize(struct inode *inode) |
50f8c370 AM |
199 | { |
200 | } | |
201 | ||
9f754758 | 202 | static inline void dquot_drop(struct inode *inode) |
50f8c370 AM |
203 | { |
204 | } | |
205 | ||
63936dda | 206 | static inline int dquot_alloc_inode(const struct inode *inode) |
50f8c370 AM |
207 | { |
208 | return 0; | |
209 | } | |
210 | ||
63936dda | 211 | static inline void dquot_free_inode(const struct inode *inode) |
50f8c370 AM |
212 | { |
213 | } | |
214 | ||
b43fa828 | 215 | static inline int dquot_transfer(struct inode *inode, struct iattr *iattr) |
50f8c370 AM |
216 | { |
217 | return 0; | |
218 | } | |
219 | ||
5dd4056d | 220 | static inline int __dquot_alloc_space(struct inode *inode, qsize_t number, |
56246f9a | 221 | int flags) |
1da177e4 | 222 | { |
56246f9a | 223 | if (!(flags & DQUOT_SPACE_RESERVE)) |
5dd4056d | 224 | inode_add_bytes(inode, number); |
1da177e4 LT |
225 | return 0; |
226 | } | |
227 | ||
5dd4056d | 228 | static inline void __dquot_free_space(struct inode *inode, qsize_t number, |
56246f9a | 229 | int flags) |
1da177e4 | 230 | { |
56246f9a | 231 | if (!(flags & DQUOT_SPACE_RESERVE)) |
5dd4056d | 232 | inode_sub_bytes(inode, number); |
1da177e4 LT |
233 | } |
234 | ||
5dd4056d | 235 | static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number) |
1da177e4 | 236 | { |
5dd4056d | 237 | inode_add_bytes(inode, number); |
1da177e4 LT |
238 | return 0; |
239 | } | |
240 | ||
0f0dd62f CH |
241 | static inline int dquot_disable(struct super_block *sb, int type, |
242 | unsigned int flags) | |
243 | { | |
244 | return 0; | |
245 | } | |
246 | ||
247 | static inline int dquot_suspend(struct super_block *sb, int type) | |
248 | { | |
249 | return 0; | |
250 | } | |
251 | ||
252 | static inline int dquot_resume(struct super_block *sb, int type) | |
253 | { | |
254 | return 0; | |
1da177e4 LT |
255 | } |
256 | ||
871a2931 CH |
257 | #define dquot_file_open generic_file_open |
258 | ||
5dd4056d CH |
259 | #endif /* CONFIG_QUOTA */ |
260 | ||
261 | static inline int dquot_alloc_space_nodirty(struct inode *inode, qsize_t nr) | |
1da177e4 | 262 | { |
56246f9a | 263 | return __dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN); |
1da177e4 LT |
264 | } |
265 | ||
0e05842b ES |
266 | static inline void dquot_alloc_space_nofail(struct inode *inode, qsize_t nr) |
267 | { | |
268 | __dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN|DQUOT_SPACE_NOFAIL); | |
43d2932d | 269 | mark_inode_dirty_sync(inode); |
1da177e4 LT |
270 | } |
271 | ||
5dd4056d | 272 | static inline int dquot_alloc_space(struct inode *inode, qsize_t nr) |
f18df228 | 273 | { |
5dd4056d CH |
274 | int ret; |
275 | ||
276 | ret = dquot_alloc_space_nodirty(inode, nr); | |
277 | if (!ret) | |
43d2932d | 278 | mark_inode_dirty_sync(inode); |
5dd4056d | 279 | return ret; |
f18df228 MC |
280 | } |
281 | ||
5dd4056d | 282 | static inline int dquot_alloc_block_nodirty(struct inode *inode, qsize_t nr) |
740d9dcd | 283 | { |
5dd4056d | 284 | return dquot_alloc_space_nodirty(inode, nr << inode->i_blkbits); |
740d9dcd MC |
285 | } |
286 | ||
0e05842b ES |
287 | static inline void dquot_alloc_block_nofail(struct inode *inode, qsize_t nr) |
288 | { | |
289 | dquot_alloc_space_nofail(inode, nr << inode->i_blkbits); | |
290 | } | |
291 | ||
5dd4056d | 292 | static inline int dquot_alloc_block(struct inode *inode, qsize_t nr) |
740d9dcd | 293 | { |
5dd4056d | 294 | return dquot_alloc_space(inode, nr << inode->i_blkbits); |
740d9dcd MC |
295 | } |
296 | ||
5dd4056d | 297 | static inline int dquot_prealloc_block_nodirty(struct inode *inode, qsize_t nr) |
1da177e4 | 298 | { |
56246f9a | 299 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0); |
1da177e4 LT |
300 | } |
301 | ||
5dd4056d | 302 | static inline int dquot_prealloc_block(struct inode *inode, qsize_t nr) |
1da177e4 | 303 | { |
5dd4056d | 304 | int ret; |
1da177e4 | 305 | |
5dd4056d CH |
306 | ret = dquot_prealloc_block_nodirty(inode, nr); |
307 | if (!ret) | |
43d2932d | 308 | mark_inode_dirty_sync(inode); |
5dd4056d | 309 | return ret; |
03f6e92b JK |
310 | } |
311 | ||
5dd4056d | 312 | static inline int dquot_reserve_block(struct inode *inode, qsize_t nr) |
03f6e92b | 313 | { |
56246f9a ES |
314 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, |
315 | DQUOT_SPACE_WARN|DQUOT_SPACE_RESERVE); | |
03f6e92b JK |
316 | } |
317 | ||
5dd4056d | 318 | static inline int dquot_claim_block(struct inode *inode, qsize_t nr) |
03f6e92b | 319 | { |
5dd4056d | 320 | int ret; |
03f6e92b | 321 | |
5dd4056d CH |
322 | ret = dquot_claim_space_nodirty(inode, nr << inode->i_blkbits); |
323 | if (!ret) | |
43d2932d | 324 | mark_inode_dirty_sync(inode); |
5dd4056d | 325 | return ret; |
03f6e92b JK |
326 | } |
327 | ||
5dd4056d | 328 | static inline void dquot_free_space_nodirty(struct inode *inode, qsize_t nr) |
f18df228 | 329 | { |
5dd4056d | 330 | __dquot_free_space(inode, nr, 0); |
f18df228 MC |
331 | } |
332 | ||
5dd4056d | 333 | static inline void dquot_free_space(struct inode *inode, qsize_t nr) |
740d9dcd | 334 | { |
5dd4056d | 335 | dquot_free_space_nodirty(inode, nr); |
43d2932d | 336 | mark_inode_dirty_sync(inode); |
740d9dcd MC |
337 | } |
338 | ||
5dd4056d | 339 | static inline void dquot_free_block_nodirty(struct inode *inode, qsize_t nr) |
740d9dcd | 340 | { |
5dd4056d | 341 | dquot_free_space_nodirty(inode, nr << inode->i_blkbits); |
740d9dcd MC |
342 | } |
343 | ||
5dd4056d | 344 | static inline void dquot_free_block(struct inode *inode, qsize_t nr) |
03f6e92b | 345 | { |
5dd4056d | 346 | dquot_free_space(inode, nr << inode->i_blkbits); |
03f6e92b JK |
347 | } |
348 | ||
5dd4056d CH |
349 | static inline void dquot_release_reservation_block(struct inode *inode, |
350 | qsize_t nr) | |
03f6e92b | 351 | { |
56246f9a | 352 | __dquot_free_space(inode, nr << inode->i_blkbits, DQUOT_SPACE_RESERVE); |
03f6e92b | 353 | } |
1da177e4 LT |
354 | |
355 | #endif /* _LINUX_QUOTAOPS_ */ |