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 | |
12755627 DM |
17 | /* i_mutex must being held */ |
18 | static inline bool is_quota_modification(struct inode *inode, struct iattr *ia) | |
19 | { | |
20 | return (ia->ia_valid & ATTR_SIZE && ia->ia_size != inode->i_size) || | |
21 | (ia->ia_valid & ATTR_UID && ia->ia_uid != inode->i_uid) || | |
22 | (ia->ia_valid & ATTR_GID && ia->ia_gid != inode->i_gid); | |
23 | } | |
24 | ||
1da177e4 LT |
25 | #if defined(CONFIG_QUOTA) |
26 | ||
27 | /* | |
28 | * declaration of quota_function calls in kernel. | |
29 | */ | |
c469070a DM |
30 | void inode_add_rsv_space(struct inode *inode, qsize_t number); |
31 | void inode_claim_rsv_space(struct inode *inode, qsize_t number); | |
32 | void inode_sub_rsv_space(struct inode *inode, qsize_t number); | |
33 | ||
871a2931 | 34 | void dquot_initialize(struct inode *inode); |
9f754758 | 35 | void dquot_drop(struct inode *inode); |
3d9ea253 JK |
36 | struct dquot *dqget(struct super_block *sb, unsigned int id, int type); |
37 | void dqput(struct dquot *dquot); | |
12c77527 JK |
38 | int dquot_scan_active(struct super_block *sb, |
39 | int (*fn)(struct dquot *dquot, unsigned long priv), | |
40 | unsigned long priv); | |
7d9056ba JK |
41 | struct dquot *dquot_alloc(struct super_block *sb, int type); |
42 | void dquot_destroy(struct dquot *dquot); | |
b85f4b87 | 43 | |
5dd4056d CH |
44 | int __dquot_alloc_space(struct inode *inode, qsize_t number, |
45 | int warn, int reserve); | |
46 | void __dquot_free_space(struct inode *inode, qsize_t number, int reserve); | |
b85f4b87 | 47 | |
63936dda | 48 | int dquot_alloc_inode(const struct inode *inode); |
740d9dcd | 49 | |
5dd4056d | 50 | int dquot_claim_space_nodirty(struct inode *inode, qsize_t number); |
63936dda | 51 | void dquot_free_inode(const struct inode *inode); |
b85f4b87 | 52 | |
0f0dd62f CH |
53 | int dquot_disable(struct super_block *sb, int type, unsigned int flags); |
54 | /* Suspend quotas on remount RO */ | |
55 | static inline int dquot_suspend(struct super_block *sb, int type) | |
56 | { | |
57 | return dquot_disable(sb, type, DQUOT_SUSPENDED); | |
58 | } | |
59 | int dquot_resume(struct super_block *sb, int type); | |
60 | ||
b85f4b87 JK |
61 | int dquot_commit(struct dquot *dquot); |
62 | int dquot_acquire(struct dquot *dquot); | |
63 | int dquot_release(struct dquot *dquot); | |
64 | int dquot_commit_info(struct super_block *sb, int type); | |
65 | int dquot_mark_dquot_dirty(struct dquot *dquot); | |
66 | ||
907f4554 CH |
67 | int dquot_file_open(struct inode *inode, struct file *file); |
68 | ||
b85f4b87 | 69 | int vfs_quota_on(struct super_block *sb, int type, int format_id, |
307ae18a | 70 | char *path); |
f55abc0f JK |
71 | int vfs_quota_enable(struct inode *inode, int type, int format_id, |
72 | unsigned int flags); | |
77e69dac AV |
73 | int vfs_quota_on_path(struct super_block *sb, int type, int format_id, |
74 | struct path *path); | |
b85f4b87 JK |
75 | int vfs_quota_on_mount(struct super_block *sb, char *qf_name, |
76 | int format_id, int type); | |
307ae18a | 77 | int vfs_quota_off(struct super_block *sb, int type); |
5fb324ad | 78 | int vfs_quota_sync(struct super_block *sb, int type, int wait); |
b85f4b87 JK |
79 | int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii); |
80 | int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii); | |
b9b2dd36 CH |
81 | int vfs_get_dqblk(struct super_block *sb, int type, qid_t id, |
82 | struct fs_disk_quota *di); | |
c472b432 CH |
83 | int vfs_set_dqblk(struct super_block *sb, int type, qid_t id, |
84 | struct fs_disk_quota *di); | |
b85f4b87 | 85 | |
bc8e5f07 | 86 | int __dquot_transfer(struct inode *inode, struct dquot **transfer_to); |
b43fa828 | 87 | int dquot_transfer(struct inode *inode, struct iattr *iattr); |
1da177e4 | 88 | |
03b06343 JK |
89 | static inline struct mem_dqinfo *sb_dqinfo(struct super_block *sb, int type) |
90 | { | |
91 | return sb_dqopt(sb)->info + type; | |
92 | } | |
74abb989 JK |
93 | |
94 | /* | |
95 | * Functions for checking status of quota | |
96 | */ | |
97 | ||
ad1e6e8d | 98 | static inline bool sb_has_quota_usage_enabled(struct super_block *sb, int type) |
03b06343 | 99 | { |
f55abc0f JK |
100 | return sb_dqopt(sb)->flags & |
101 | dquot_state_flag(DQUOT_USAGE_ENABLED, type); | |
03b06343 | 102 | } |
74abb989 | 103 | |
ad1e6e8d | 104 | static inline bool sb_has_quota_limits_enabled(struct super_block *sb, int type) |
03b06343 | 105 | { |
f55abc0f JK |
106 | return sb_dqopt(sb)->flags & |
107 | dquot_state_flag(DQUOT_LIMITS_ENABLED, type); | |
03b06343 | 108 | } |
74abb989 | 109 | |
ad1e6e8d | 110 | static inline bool sb_has_quota_suspended(struct super_block *sb, int type) |
03b06343 | 111 | { |
f55abc0f JK |
112 | return sb_dqopt(sb)->flags & |
113 | dquot_state_flag(DQUOT_SUSPENDED, type); | |
03b06343 | 114 | } |
74abb989 | 115 | |
ad1e6e8d | 116 | static inline unsigned sb_any_quota_suspended(struct super_block *sb) |
03b06343 | 117 | { |
ad1e6e8d DM |
118 | unsigned type, tmsk = 0; |
119 | for (type = 0; type < MAXQUOTAS; type++) | |
120 | tmsk |= sb_has_quota_suspended(sb, type) << type; | |
121 | return tmsk; | |
03b06343 | 122 | } |
74abb989 | 123 | |
f55abc0f | 124 | /* Does kernel know about any quota information for given sb + type? */ |
ad1e6e8d | 125 | static inline bool sb_has_quota_loaded(struct super_block *sb, int type) |
f55abc0f JK |
126 | { |
127 | /* Currently if anything is on, then quota usage is on as well */ | |
128 | return sb_has_quota_usage_enabled(sb, type); | |
129 | } | |
130 | ||
ad1e6e8d | 131 | static inline unsigned sb_any_quota_loaded(struct super_block *sb) |
f55abc0f | 132 | { |
ad1e6e8d DM |
133 | unsigned type, tmsk = 0; |
134 | for (type = 0; type < MAXQUOTAS; type++) | |
135 | tmsk |= sb_has_quota_loaded(sb, type) << type; | |
136 | return tmsk; | |
f55abc0f JK |
137 | } |
138 | ||
ad1e6e8d | 139 | static inline bool sb_has_quota_active(struct super_block *sb, int type) |
f55abc0f JK |
140 | { |
141 | return sb_has_quota_loaded(sb, type) && | |
142 | !sb_has_quota_suspended(sb, type); | |
143 | } | |
144 | ||
ad1e6e8d | 145 | static inline unsigned sb_any_quota_active(struct super_block *sb) |
f55abc0f | 146 | { |
ad1e6e8d | 147 | return sb_any_quota_loaded(sb) & ~sb_any_quota_suspended(sb); |
f55abc0f JK |
148 | } |
149 | ||
1da177e4 LT |
150 | /* |
151 | * Operations supported for diskquotas. | |
152 | */ | |
61e225dc | 153 | extern const struct dquot_operations dquot_operations; |
0d54b217 | 154 | extern const struct quotactl_ops vfs_quotactl_ops; |
1da177e4 | 155 | |
1da177e4 LT |
156 | #else |
157 | ||
f55abc0f | 158 | static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type) |
03b06343 JK |
159 | { |
160 | return 0; | |
161 | } | |
162 | ||
f55abc0f | 163 | static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type) |
03b06343 JK |
164 | { |
165 | return 0; | |
166 | } | |
167 | ||
168 | static inline int sb_has_quota_suspended(struct super_block *sb, int type) | |
169 | { | |
170 | return 0; | |
171 | } | |
172 | ||
173 | static inline int sb_any_quota_suspended(struct super_block *sb) | |
174 | { | |
175 | return 0; | |
176 | } | |
74abb989 | 177 | |
f55abc0f JK |
178 | /* Does kernel know about any quota information for given sb + type? */ |
179 | static inline int sb_has_quota_loaded(struct super_block *sb, int type) | |
180 | { | |
181 | return 0; | |
182 | } | |
183 | ||
184 | static inline int sb_any_quota_loaded(struct super_block *sb) | |
185 | { | |
186 | return 0; | |
187 | } | |
188 | ||
189 | static inline int sb_has_quota_active(struct super_block *sb, int type) | |
190 | { | |
191 | return 0; | |
192 | } | |
193 | ||
194 | static inline int sb_any_quota_active(struct super_block *sb) | |
195 | { | |
196 | return 0; | |
197 | } | |
198 | ||
871a2931 | 199 | static inline void dquot_initialize(struct inode *inode) |
50f8c370 AM |
200 | { |
201 | } | |
202 | ||
9f754758 | 203 | static inline void dquot_drop(struct inode *inode) |
50f8c370 AM |
204 | { |
205 | } | |
206 | ||
63936dda | 207 | static inline int dquot_alloc_inode(const struct inode *inode) |
50f8c370 AM |
208 | { |
209 | return 0; | |
210 | } | |
211 | ||
63936dda | 212 | static inline void dquot_free_inode(const struct inode *inode) |
50f8c370 AM |
213 | { |
214 | } | |
215 | ||
b43fa828 | 216 | static inline int dquot_transfer(struct inode *inode, struct iattr *iattr) |
50f8c370 AM |
217 | { |
218 | return 0; | |
219 | } | |
220 | ||
5dd4056d CH |
221 | static inline int __dquot_alloc_space(struct inode *inode, qsize_t number, |
222 | int warn, int reserve) | |
1da177e4 | 223 | { |
5dd4056d CH |
224 | if (!reserve) |
225 | inode_add_bytes(inode, number); | |
1da177e4 LT |
226 | return 0; |
227 | } | |
228 | ||
5dd4056d CH |
229 | static inline void __dquot_free_space(struct inode *inode, qsize_t number, |
230 | int reserve) | |
1da177e4 | 231 | { |
5dd4056d CH |
232 | if (!reserve) |
233 | inode_sub_bytes(inode, number); | |
1da177e4 LT |
234 | } |
235 | ||
5dd4056d | 236 | static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number) |
1da177e4 | 237 | { |
5dd4056d | 238 | inode_add_bytes(inode, number); |
1da177e4 | 239 | return 0; |
0f0dd62f CH |
240 | } |
241 | ||
242 | static inline int dquot_disable(struct super_block *sb, int type, | |
243 | unsigned int flags) | |
244 | { | |
245 | return 0; | |
246 | } | |
247 | ||
248 | static inline int dquot_suspend(struct super_block *sb, int type) | |
249 | { | |
250 | return 0; | |
251 | } | |
252 | ||
253 | static inline int dquot_resume(struct super_block *sb, int type) | |
254 | { | |
255 | return 0; | |
1da177e4 LT |
256 | } |
257 | ||
871a2931 CH |
258 | #define dquot_file_open generic_file_open |
259 | ||
5dd4056d CH |
260 | #endif /* CONFIG_QUOTA */ |
261 | ||
262 | static inline int dquot_alloc_space_nodirty(struct inode *inode, qsize_t nr) | |
1da177e4 | 263 | { |
5dd4056d | 264 | return __dquot_alloc_space(inode, nr, 1, 0); |
1da177e4 LT |
265 | } |
266 | ||
5dd4056d | 267 | static inline int dquot_alloc_space(struct inode *inode, qsize_t nr) |
f18df228 | 268 | { |
5dd4056d CH |
269 | int ret; |
270 | ||
271 | ret = dquot_alloc_space_nodirty(inode, nr); | |
272 | if (!ret) | |
273 | mark_inode_dirty(inode); | |
274 | return ret; | |
f18df228 MC |
275 | } |
276 | ||
5dd4056d | 277 | static inline int dquot_alloc_block_nodirty(struct inode *inode, qsize_t nr) |
740d9dcd | 278 | { |
5dd4056d | 279 | return dquot_alloc_space_nodirty(inode, nr << inode->i_blkbits); |
740d9dcd MC |
280 | } |
281 | ||
5dd4056d | 282 | static inline int dquot_alloc_block(struct inode *inode, qsize_t nr) |
740d9dcd | 283 | { |
5dd4056d | 284 | return dquot_alloc_space(inode, nr << inode->i_blkbits); |
740d9dcd MC |
285 | } |
286 | ||
5dd4056d | 287 | static inline int dquot_prealloc_block_nodirty(struct inode *inode, qsize_t nr) |
1da177e4 | 288 | { |
5dd4056d | 289 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0, 0); |
1da177e4 LT |
290 | } |
291 | ||
5dd4056d | 292 | static inline int dquot_prealloc_block(struct inode *inode, qsize_t nr) |
1da177e4 | 293 | { |
5dd4056d | 294 | int ret; |
1da177e4 | 295 | |
5dd4056d CH |
296 | ret = dquot_prealloc_block_nodirty(inode, nr); |
297 | if (!ret) | |
298 | mark_inode_dirty(inode); | |
299 | return ret; | |
03f6e92b JK |
300 | } |
301 | ||
5dd4056d | 302 | static inline int dquot_reserve_block(struct inode *inode, qsize_t nr) |
03f6e92b | 303 | { |
5dd4056d | 304 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, 1, 1); |
03f6e92b JK |
305 | } |
306 | ||
5dd4056d | 307 | static inline int dquot_claim_block(struct inode *inode, qsize_t nr) |
03f6e92b | 308 | { |
5dd4056d | 309 | int ret; |
03f6e92b | 310 | |
5dd4056d CH |
311 | ret = dquot_claim_space_nodirty(inode, nr << inode->i_blkbits); |
312 | if (!ret) | |
313 | mark_inode_dirty(inode); | |
314 | return ret; | |
03f6e92b JK |
315 | } |
316 | ||
5dd4056d | 317 | static inline void dquot_free_space_nodirty(struct inode *inode, qsize_t nr) |
f18df228 | 318 | { |
5dd4056d | 319 | __dquot_free_space(inode, nr, 0); |
f18df228 MC |
320 | } |
321 | ||
5dd4056d | 322 | static inline void dquot_free_space(struct inode *inode, qsize_t nr) |
740d9dcd | 323 | { |
5dd4056d CH |
324 | dquot_free_space_nodirty(inode, nr); |
325 | mark_inode_dirty(inode); | |
740d9dcd MC |
326 | } |
327 | ||
5dd4056d | 328 | static inline void dquot_free_block_nodirty(struct inode *inode, qsize_t nr) |
740d9dcd | 329 | { |
5dd4056d | 330 | dquot_free_space_nodirty(inode, nr << inode->i_blkbits); |
740d9dcd MC |
331 | } |
332 | ||
5dd4056d | 333 | static inline void dquot_free_block(struct inode *inode, qsize_t nr) |
03f6e92b | 334 | { |
5dd4056d | 335 | dquot_free_space(inode, nr << inode->i_blkbits); |
03f6e92b JK |
336 | } |
337 | ||
5dd4056d CH |
338 | static inline void dquot_release_reservation_block(struct inode *inode, |
339 | qsize_t nr) | |
03f6e92b | 340 | { |
5dd4056d | 341 | __dquot_free_space(inode, nr << inode->i_blkbits, 1); |
03f6e92b | 342 | } |
1da177e4 LT |
343 | |
344 | #endif /* _LINUX_QUOTAOPS_ */ |