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 | ||
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); | |
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 | ||
850b201b | 142 | /* Cannot be called inside a transaction */ |
b85f4b87 | 143 | static inline int vfs_dq_off(struct super_block *sb, int remount) |
1da177e4 LT |
144 | { |
145 | int ret = -ENOSYS; | |
146 | ||
0ff5af83 JK |
147 | if (sb->s_qcop && sb->s_qcop->quota_off) |
148 | ret = sb->s_qcop->quota_off(sb, -1, remount); | |
149 | return ret; | |
150 | } | |
151 | ||
1da177e4 LT |
152 | #else |
153 | ||
f55abc0f | 154 | static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type) |
03b06343 JK |
155 | { |
156 | return 0; | |
157 | } | |
158 | ||
f55abc0f | 159 | static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type) |
03b06343 JK |
160 | { |
161 | return 0; | |
162 | } | |
163 | ||
164 | static inline int sb_has_quota_suspended(struct super_block *sb, int type) | |
165 | { | |
166 | return 0; | |
167 | } | |
168 | ||
169 | static inline int sb_any_quota_suspended(struct super_block *sb) | |
170 | { | |
171 | return 0; | |
172 | } | |
74abb989 | 173 | |
f55abc0f JK |
174 | /* Does kernel know about any quota information for given sb + type? */ |
175 | static inline int sb_has_quota_loaded(struct super_block *sb, int type) | |
176 | { | |
177 | return 0; | |
178 | } | |
179 | ||
180 | static inline int sb_any_quota_loaded(struct super_block *sb) | |
181 | { | |
182 | return 0; | |
183 | } | |
184 | ||
185 | static inline int sb_has_quota_active(struct super_block *sb, int type) | |
186 | { | |
187 | return 0; | |
188 | } | |
189 | ||
190 | static inline int sb_any_quota_active(struct super_block *sb) | |
191 | { | |
192 | return 0; | |
193 | } | |
194 | ||
1da177e4 LT |
195 | /* |
196 | * NO-OP when quota not configured. | |
197 | */ | |
198 | #define sb_dquot_ops (NULL) | |
199 | #define sb_quotactl_ops (NULL) | |
50f8c370 | 200 | |
871a2931 | 201 | static inline void dquot_initialize(struct inode *inode) |
50f8c370 AM |
202 | { |
203 | } | |
204 | ||
9f754758 | 205 | static inline void dquot_drop(struct inode *inode) |
50f8c370 AM |
206 | { |
207 | } | |
208 | ||
63936dda | 209 | static inline int dquot_alloc_inode(const struct inode *inode) |
50f8c370 AM |
210 | { |
211 | return 0; | |
212 | } | |
213 | ||
63936dda | 214 | static inline void dquot_free_inode(const struct inode *inode) |
50f8c370 AM |
215 | { |
216 | } | |
217 | ||
b85f4b87 | 218 | static inline int vfs_dq_off(struct super_block *sb, int remount) |
50f8c370 AM |
219 | { |
220 | return 0; | |
221 | } | |
222 | ||
b85f4b87 | 223 | static inline int vfs_dq_quota_on_remount(struct super_block *sb) |
50f8c370 AM |
224 | { |
225 | return 0; | |
226 | } | |
227 | ||
b43fa828 | 228 | static inline int dquot_transfer(struct inode *inode, struct iattr *iattr) |
50f8c370 AM |
229 | { |
230 | return 0; | |
231 | } | |
232 | ||
5dd4056d CH |
233 | static inline int __dquot_alloc_space(struct inode *inode, qsize_t number, |
234 | int warn, int reserve) | |
1da177e4 | 235 | { |
5dd4056d CH |
236 | if (!reserve) |
237 | inode_add_bytes(inode, number); | |
1da177e4 LT |
238 | return 0; |
239 | } | |
240 | ||
5dd4056d CH |
241 | static inline void __dquot_free_space(struct inode *inode, qsize_t number, |
242 | int reserve) | |
1da177e4 | 243 | { |
5dd4056d CH |
244 | if (!reserve) |
245 | inode_sub_bytes(inode, number); | |
1da177e4 LT |
246 | } |
247 | ||
5dd4056d | 248 | static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number) |
1da177e4 | 249 | { |
5dd4056d | 250 | inode_add_bytes(inode, number); |
1da177e4 LT |
251 | return 0; |
252 | } | |
253 | ||
871a2931 CH |
254 | #define dquot_file_open generic_file_open |
255 | ||
5dd4056d CH |
256 | #endif /* CONFIG_QUOTA */ |
257 | ||
258 | static inline int dquot_alloc_space_nodirty(struct inode *inode, qsize_t nr) | |
1da177e4 | 259 | { |
5dd4056d | 260 | return __dquot_alloc_space(inode, nr, 1, 0); |
1da177e4 LT |
261 | } |
262 | ||
5dd4056d | 263 | static inline int dquot_alloc_space(struct inode *inode, qsize_t nr) |
f18df228 | 264 | { |
5dd4056d CH |
265 | int ret; |
266 | ||
267 | ret = dquot_alloc_space_nodirty(inode, nr); | |
268 | if (!ret) | |
269 | mark_inode_dirty(inode); | |
270 | return ret; | |
f18df228 MC |
271 | } |
272 | ||
5dd4056d | 273 | static inline int dquot_alloc_block_nodirty(struct inode *inode, qsize_t nr) |
740d9dcd | 274 | { |
5dd4056d | 275 | return dquot_alloc_space_nodirty(inode, nr << inode->i_blkbits); |
740d9dcd MC |
276 | } |
277 | ||
5dd4056d | 278 | static inline int dquot_alloc_block(struct inode *inode, qsize_t nr) |
740d9dcd | 279 | { |
5dd4056d | 280 | return dquot_alloc_space(inode, nr << inode->i_blkbits); |
740d9dcd MC |
281 | } |
282 | ||
5dd4056d | 283 | static inline int dquot_prealloc_block_nodirty(struct inode *inode, qsize_t nr) |
1da177e4 | 284 | { |
5dd4056d | 285 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0, 0); |
1da177e4 LT |
286 | } |
287 | ||
5dd4056d | 288 | static inline int dquot_prealloc_block(struct inode *inode, qsize_t nr) |
1da177e4 | 289 | { |
5dd4056d | 290 | int ret; |
1da177e4 | 291 | |
5dd4056d CH |
292 | ret = dquot_prealloc_block_nodirty(inode, nr); |
293 | if (!ret) | |
294 | mark_inode_dirty(inode); | |
295 | return ret; | |
03f6e92b JK |
296 | } |
297 | ||
5dd4056d | 298 | static inline int dquot_reserve_block(struct inode *inode, qsize_t nr) |
03f6e92b | 299 | { |
5dd4056d | 300 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, 1, 1); |
03f6e92b JK |
301 | } |
302 | ||
5dd4056d | 303 | static inline int dquot_claim_block(struct inode *inode, qsize_t nr) |
03f6e92b | 304 | { |
5dd4056d | 305 | int ret; |
03f6e92b | 306 | |
5dd4056d CH |
307 | ret = dquot_claim_space_nodirty(inode, nr << inode->i_blkbits); |
308 | if (!ret) | |
309 | mark_inode_dirty(inode); | |
310 | return ret; | |
03f6e92b JK |
311 | } |
312 | ||
5dd4056d | 313 | static inline void dquot_free_space_nodirty(struct inode *inode, qsize_t nr) |
f18df228 | 314 | { |
5dd4056d | 315 | __dquot_free_space(inode, nr, 0); |
f18df228 MC |
316 | } |
317 | ||
5dd4056d | 318 | static inline void dquot_free_space(struct inode *inode, qsize_t nr) |
740d9dcd | 319 | { |
5dd4056d CH |
320 | dquot_free_space_nodirty(inode, nr); |
321 | mark_inode_dirty(inode); | |
740d9dcd MC |
322 | } |
323 | ||
5dd4056d | 324 | static inline void dquot_free_block_nodirty(struct inode *inode, qsize_t nr) |
740d9dcd | 325 | { |
5dd4056d | 326 | dquot_free_space_nodirty(inode, nr << inode->i_blkbits); |
740d9dcd MC |
327 | } |
328 | ||
5dd4056d | 329 | static inline void dquot_free_block(struct inode *inode, qsize_t nr) |
03f6e92b | 330 | { |
5dd4056d | 331 | dquot_free_space(inode, nr << inode->i_blkbits); |
03f6e92b JK |
332 | } |
333 | ||
5dd4056d CH |
334 | static inline void dquot_release_reservation_block(struct inode *inode, |
335 | qsize_t nr) | |
03f6e92b | 336 | { |
5dd4056d | 337 | __dquot_free_space(inode, nr << inode->i_blkbits, 1); |
03f6e92b | 338 | } |
1da177e4 LT |
339 | |
340 | #endif /* _LINUX_QUOTAOPS_ */ |