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90586523 EP |
1 | /* |
2 | * Filesystem access notification for Linux | |
3 | * | |
4 | * Copyright (C) 2008 Red Hat, Inc., Eric Paris <eparis@redhat.com> | |
5 | */ | |
6 | ||
7 | #ifndef __LINUX_FSNOTIFY_BACKEND_H | |
8 | #define __LINUX_FSNOTIFY_BACKEND_H | |
9 | ||
10 | #ifdef __KERNEL__ | |
11 | ||
63c882a0 | 12 | #include <linux/idr.h> /* inotify uses this */ |
90586523 EP |
13 | #include <linux/fs.h> /* struct inode */ |
14 | #include <linux/list.h> | |
15 | #include <linux/path.h> /* struct path */ | |
16 | #include <linux/spinlock.h> | |
17 | #include <linux/types.h> | |
60063497 | 18 | #include <linux/atomic.h> |
90586523 EP |
19 | |
20 | /* | |
21 | * IN_* from inotfy.h lines up EXACTLY with FS_*, this is so we can easily | |
22 | * convert between them. dnotify only needs conversion at watch creation | |
23 | * so no perf loss there. fanotify isn't defined yet, so it can use the | |
24 | * wholes if it needs more events. | |
25 | */ | |
26 | #define FS_ACCESS 0x00000001 /* File was accessed */ | |
27 | #define FS_MODIFY 0x00000002 /* File was modified */ | |
28 | #define FS_ATTRIB 0x00000004 /* Metadata changed */ | |
29 | #define FS_CLOSE_WRITE 0x00000008 /* Writtable file was closed */ | |
30 | #define FS_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */ | |
31 | #define FS_OPEN 0x00000020 /* File was opened */ | |
32 | #define FS_MOVED_FROM 0x00000040 /* File was moved from X */ | |
33 | #define FS_MOVED_TO 0x00000080 /* File was moved to Y */ | |
34 | #define FS_CREATE 0x00000100 /* Subfile was created */ | |
35 | #define FS_DELETE 0x00000200 /* Subfile was deleted */ | |
36 | #define FS_DELETE_SELF 0x00000400 /* Self was deleted */ | |
37 | #define FS_MOVE_SELF 0x00000800 /* Self was moved */ | |
38 | ||
39 | #define FS_UNMOUNT 0x00002000 /* inode on umount fs */ | |
40 | #define FS_Q_OVERFLOW 0x00004000 /* Event queued overflowed */ | |
41 | #define FS_IN_IGNORED 0x00008000 /* last inotify event here */ | |
42 | ||
c4ec54b4 EP |
43 | #define FS_OPEN_PERM 0x00010000 /* open event in an permission hook */ |
44 | #define FS_ACCESS_PERM 0x00020000 /* access event in a permissions hook */ | |
45 | ||
8c1934c8 | 46 | #define FS_EXCL_UNLINK 0x04000000 /* do not send events if object is unlinked */ |
b29866aa | 47 | #define FS_ISDIR 0x40000000 /* event occurred against dir */ |
90586523 EP |
48 | #define FS_IN_ONESHOT 0x80000000 /* only send event once */ |
49 | ||
50 | #define FS_DN_RENAME 0x10000000 /* file renamed */ | |
51 | #define FS_DN_MULTISHOT 0x20000000 /* dnotify multishot */ | |
52 | ||
c28f7e56 EP |
53 | /* This inode cares about things that happen to its children. Always set for |
54 | * dnotify and inotify. */ | |
55 | #define FS_EVENT_ON_CHILD 0x08000000 | |
56 | ||
57 | /* This is a list of all events that may get sent to a parernt based on fs event | |
58 | * happening to inodes inside that directory */ | |
59 | #define FS_EVENTS_POSS_ON_CHILD (FS_ACCESS | FS_MODIFY | FS_ATTRIB |\ | |
60 | FS_CLOSE_WRITE | FS_CLOSE_NOWRITE | FS_OPEN |\ | |
61 | FS_MOVED_FROM | FS_MOVED_TO | FS_CREATE |\ | |
a4f9a9a6 | 62 | FS_DELETE | FS_OPEN_PERM | FS_ACCESS_PERM) |
c28f7e56 | 63 | |
e9fd702a EP |
64 | #define FS_MOVE (FS_MOVED_FROM | FS_MOVED_TO) |
65 | ||
ff8bcbd0 EP |
66 | #define ALL_FSNOTIFY_PERM_EVENTS (FS_OPEN_PERM | FS_ACCESS_PERM) |
67 | ||
20dee624 EP |
68 | #define ALL_FSNOTIFY_EVENTS (FS_ACCESS | FS_MODIFY | FS_ATTRIB | \ |
69 | FS_CLOSE_WRITE | FS_CLOSE_NOWRITE | FS_OPEN | \ | |
70 | FS_MOVED_FROM | FS_MOVED_TO | FS_CREATE | \ | |
71 | FS_DELETE | FS_DELETE_SELF | FS_MOVE_SELF | \ | |
72 | FS_UNMOUNT | FS_Q_OVERFLOW | FS_IN_IGNORED | \ | |
73 | FS_OPEN_PERM | FS_ACCESS_PERM | FS_EXCL_UNLINK | \ | |
b29866aa | 74 | FS_ISDIR | FS_IN_ONESHOT | FS_DN_RENAME | \ |
20dee624 EP |
75 | FS_DN_MULTISHOT | FS_EVENT_ON_CHILD) |
76 | ||
90586523 EP |
77 | struct fsnotify_group; |
78 | struct fsnotify_event; | |
e61ce867 | 79 | struct fsnotify_mark; |
e4aff117 | 80 | struct fsnotify_event_private_data; |
7053aee2 | 81 | struct fsnotify_fname; |
90586523 EP |
82 | |
83 | /* | |
84 | * Each group much define these ops. The fsnotify infrastructure will call | |
85 | * these operations for each relevant group. | |
86 | * | |
87 | * handle_event - main call for a group to handle an fs event | |
88 | * free_group_priv - called when a group refcnt hits 0 to clean up the private union | |
6960b0d9 LS |
89 | * freeing_mark - called when a mark is being destroyed for some reason. The group |
90 | * MUST be holding a reference on each mark and that reference must be | |
91 | * dropped in this function. inotify uses this function to send | |
92 | * userspace messages that marks have been removed. | |
90586523 EP |
93 | */ |
94 | struct fsnotify_ops { | |
ce8f76fb | 95 | int (*handle_event)(struct fsnotify_group *group, |
7053aee2 | 96 | struct inode *inode, |
ce8f76fb EP |
97 | struct fsnotify_mark *inode_mark, |
98 | struct fsnotify_mark *vfsmount_mark, | |
7053aee2 | 99 | u32 mask, void *data, int data_type, |
45a22f4c | 100 | const unsigned char *file_name, u32 cookie); |
90586523 | 101 | void (*free_group_priv)(struct fsnotify_group *group); |
841bdc10 | 102 | void (*freeing_mark)(struct fsnotify_mark *mark, struct fsnotify_group *group); |
7053aee2 JK |
103 | void (*free_event)(struct fsnotify_event *event); |
104 | }; | |
105 | ||
106 | /* | |
107 | * all of the information about the original object we want to now send to | |
108 | * a group. If you want to carry more info from the accessing task to the | |
109 | * listener this structure is where you need to be adding fields. | |
110 | */ | |
111 | struct fsnotify_event { | |
112 | struct list_head list; | |
113 | /* inode may ONLY be dereferenced during handle_event(). */ | |
114 | struct inode *inode; /* either the inode the event happened to or its parent */ | |
115 | u32 mask; /* the type of access, bitwise OR for FS_* event types */ | |
90586523 EP |
116 | }; |
117 | ||
118 | /* | |
119 | * A group is a "thing" that wants to receive notification about filesystem | |
120 | * events. The mask holds the subset of event types this group cares about. | |
121 | * refcnt on a group is up to the implementor and at any moment if it goes 0 | |
122 | * everything will be cleaned up. | |
123 | */ | |
124 | struct fsnotify_group { | |
90586523 EP |
125 | /* |
126 | * How the refcnt is used is up to each group. When the refcnt hits 0 | |
127 | * fsnotify will clean up all of the resources associated with this group. | |
128 | * As an example, the dnotify group will always have a refcnt=1 and that | |
129 | * will never change. Inotify, on the other hand, has a group per | |
130 | * inotify_init() and the refcnt will hit 0 only when that fd has been | |
131 | * closed. | |
132 | */ | |
133 | atomic_t refcnt; /* things with interest in this group */ | |
90586523 EP |
134 | |
135 | const struct fsnotify_ops *ops; /* how this group handles things */ | |
136 | ||
a2d8bc6c EP |
137 | /* needed to send notification to userspace */ |
138 | struct mutex notification_mutex; /* protect the notification_list */ | |
139 | struct list_head notification_list; /* list of event_holder this group needs to send to userspace */ | |
140 | wait_queue_head_t notification_waitq; /* read() on the notification file blocks on this waitq */ | |
141 | unsigned int q_len; /* events on the queue */ | |
142 | unsigned int max_events; /* maximum events allowed on the list */ | |
6ad2d4e3 EP |
143 | /* |
144 | * Valid fsnotify group priorities. Events are send in order from highest | |
145 | * priority to lowest priority. We default to the lowest priority. | |
146 | */ | |
147 | #define FS_PRIO_0 0 /* normal notifiers, no permissions */ | |
148 | #define FS_PRIO_1 1 /* fanotify content based access control */ | |
149 | #define FS_PRIO_2 2 /* fanotify pre-content access */ | |
150 | unsigned int priority; | |
a2d8bc6c | 151 | |
e61ce867 | 152 | /* stores all fastpath marks assoc with this group so they can be cleaned on unregister */ |
986ab098 | 153 | struct mutex mark_mutex; /* protect marks_list */ |
841bdc10 | 154 | atomic_t num_marks; /* 1 for each mark and 1 for not being |
3be25f49 EP |
155 | * past the point of no return when freeing |
156 | * a group */ | |
e61ce867 | 157 | struct list_head marks_list; /* all inode marks for this group */ |
3be25f49 | 158 | |
7053aee2 JK |
159 | struct fasync_struct *fsn_fa; /* async notification */ |
160 | ||
ff57cd58 | 161 | struct fsnotify_event *overflow_event; /* Event we queue when the |
7053aee2 JK |
162 | * notification list is too |
163 | * full */ | |
0a6b6bd5 | 164 | |
90586523 EP |
165 | /* groups can define private fields here or use the void *private */ |
166 | union { | |
167 | void *private; | |
63c882a0 EP |
168 | #ifdef CONFIG_INOTIFY_USER |
169 | struct inotify_group_private_data { | |
170 | spinlock_t idr_lock; | |
171 | struct idr idr; | |
63c882a0 EP |
172 | struct user_struct *user; |
173 | } inotify_data; | |
9e66e423 | 174 | #endif |
80af2588 | 175 | #ifdef CONFIG_FANOTIFY |
9e66e423 | 176 | struct fanotify_group_private_data { |
80af2588 | 177 | #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS |
9e66e423 | 178 | /* allows a group to block waiting for a userspace response */ |
9573f793 | 179 | spinlock_t access_lock; |
9e66e423 EP |
180 | struct list_head access_list; |
181 | wait_queue_head_t access_waitq; | |
09e5f14e | 182 | atomic_t bypass_perm; |
80af2588 EP |
183 | #endif /* CONFIG_FANOTIFY_ACCESS_PERMISSIONS */ |
184 | int f_flags; | |
e7099d8a | 185 | unsigned int max_marks; |
4afeff85 | 186 | struct user_struct *user; |
9e66e423 | 187 | } fanotify_data; |
80af2588 | 188 | #endif /* CONFIG_FANOTIFY */ |
90586523 EP |
189 | }; |
190 | }; | |
191 | ||
90586523 EP |
192 | /* when calling fsnotify tell it if the data is a path or inode */ |
193 | #define FSNOTIFY_EVENT_NONE 0 | |
2069601b | 194 | #define FSNOTIFY_EVENT_PATH 1 |
90586523 | 195 | #define FSNOTIFY_EVENT_INODE 2 |
90586523 | 196 | |
3be25f49 | 197 | /* |
841bdc10 | 198 | * a mark is simply an object attached to an in core inode which allows an |
3be25f49 EP |
199 | * fsnotify listener to indicate they are either no longer interested in events |
200 | * of a type matching mask or only interested in those events. | |
201 | * | |
202 | * these are flushed when an inode is evicted from core and may be flushed | |
203 | * when the inode is modified (as seen by fsnotify_access). Some fsnotify users | |
204 | * (such as dnotify) will flush these when the open fd is closed and not at | |
205 | * inode eviction or modification. | |
206 | */ | |
e61ce867 | 207 | struct fsnotify_mark { |
841bdc10 | 208 | __u32 mask; /* mask this mark is for */ |
3be25f49 EP |
209 | /* we hold ref for each i_list and g_list. also one ref for each 'thing' |
210 | * in kernel that found and may be using this mark. */ | |
211 | atomic_t refcnt; /* active things looking at this mark */ | |
841bdc10 | 212 | struct fsnotify_group *group; /* group this mark is for */ |
37d469e7 JK |
213 | struct list_head g_list; /* list of marks by group->i_fsnotify_marks |
214 | * Also reused for queueing mark into | |
215 | * destroy_list when it's waiting for | |
216 | * the end of SRCU period before it can | |
217 | * be freed */ | |
2823e04d | 218 | spinlock_t lock; /* protect group and inode */ |
0809ab69 JK |
219 | struct hlist_node obj_list; /* list of marks for inode / vfsmount */ |
220 | struct list_head free_list; /* tmp list used when freeing this mark */ | |
2823e04d | 221 | union { |
0809ab69 JK |
222 | struct inode *inode; /* inode this mark is associated with */ |
223 | struct vfsmount *mnt; /* vfsmount this mark is associated with */ | |
2823e04d | 224 | }; |
d8c0fca6 | 225 | __u32 ignored_mask; /* events types to ignore */ |
90b1e7a5 EP |
226 | #define FSNOTIFY_MARK_FLAG_INODE 0x01 |
227 | #define FSNOTIFY_MARK_FLAG_VFSMOUNT 0x02 | |
228 | #define FSNOTIFY_MARK_FLAG_OBJECT_PINNED 0x04 | |
c908370f | 229 | #define FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY 0x08 |
700307a2 | 230 | #define FSNOTIFY_MARK_FLAG_ALIVE 0x10 |
098cf2fc | 231 | unsigned int flags; /* vfsmount or inode mark? */ |
841bdc10 | 232 | void (*free_mark)(struct fsnotify_mark *mark); /* called on final put+free */ |
3be25f49 EP |
233 | }; |
234 | ||
90586523 EP |
235 | #ifdef CONFIG_FSNOTIFY |
236 | ||
237 | /* called from the vfs helpers */ | |
238 | ||
239 | /* main fsnotify call to send events */ | |
c4ec54b4 EP |
240 | extern int fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, |
241 | const unsigned char *name, u32 cookie); | |
52420392 | 242 | extern int __fsnotify_parent(struct path *path, struct dentry *dentry, __u32 mask); |
3be25f49 | 243 | extern void __fsnotify_inode_delete(struct inode *inode); |
ca9c726e | 244 | extern void __fsnotify_vfsmount_delete(struct vfsmount *mnt); |
47882c6f | 245 | extern u32 fsnotify_get_cookie(void); |
90586523 | 246 | |
c28f7e56 EP |
247 | static inline int fsnotify_inode_watches_children(struct inode *inode) |
248 | { | |
249 | /* FS_EVENT_ON_CHILD is set if the inode may care */ | |
250 | if (!(inode->i_fsnotify_mask & FS_EVENT_ON_CHILD)) | |
251 | return 0; | |
252 | /* this inode might care about child events, does it care about the | |
253 | * specific set of events that can happen on a child? */ | |
254 | return inode->i_fsnotify_mask & FS_EVENTS_POSS_ON_CHILD; | |
255 | } | |
256 | ||
257 | /* | |
258 | * Update the dentry with a flag indicating the interest of its parent to receive | |
259 | * filesystem events when those events happens to this dentry->d_inode. | |
260 | */ | |
261 | static inline void __fsnotify_update_dcache_flags(struct dentry *dentry) | |
262 | { | |
263 | struct dentry *parent; | |
264 | ||
c28f7e56 EP |
265 | assert_spin_locked(&dentry->d_lock); |
266 | ||
b5c84bf6 NP |
267 | /* |
268 | * Serialisation of setting PARENT_WATCHED on the dentries is provided | |
269 | * by d_lock. If inotify_inode_watched changes after we have taken | |
270 | * d_lock, the following __fsnotify_update_child_dentry_flags call will | |
271 | * find our entry, so it will spin until we complete here, and update | |
272 | * us with the new state. | |
273 | */ | |
c28f7e56 | 274 | parent = dentry->d_parent; |
e6ce3066 | 275 | if (parent->d_inode && fsnotify_inode_watches_children(parent->d_inode)) |
c28f7e56 EP |
276 | dentry->d_flags |= DCACHE_FSNOTIFY_PARENT_WATCHED; |
277 | else | |
278 | dentry->d_flags &= ~DCACHE_FSNOTIFY_PARENT_WATCHED; | |
279 | } | |
280 | ||
281 | /* | |
282 | * fsnotify_d_instantiate - instantiate a dentry for inode | |
c28f7e56 EP |
283 | */ |
284 | static inline void __fsnotify_d_instantiate(struct dentry *dentry, struct inode *inode) | |
285 | { | |
286 | if (!inode) | |
287 | return; | |
288 | ||
c28f7e56 EP |
289 | spin_lock(&dentry->d_lock); |
290 | __fsnotify_update_dcache_flags(dentry); | |
291 | spin_unlock(&dentry->d_lock); | |
292 | } | |
90586523 EP |
293 | |
294 | /* called from fsnotify listeners, such as fanotify or dnotify */ | |
295 | ||
98612952 | 296 | /* create a new group */ |
0d2e2a1d | 297 | extern struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops); |
98612952 LS |
298 | /* get reference to a group */ |
299 | extern void fsnotify_get_group(struct fsnotify_group *group); | |
ffab8340 | 300 | /* drop reference on a group from fsnotify_alloc_group */ |
90586523 | 301 | extern void fsnotify_put_group(struct fsnotify_group *group); |
d8153d4d LS |
302 | /* destroy group */ |
303 | extern void fsnotify_destroy_group(struct fsnotify_group *group); | |
0a6b6bd5 EP |
304 | /* fasync handler function */ |
305 | extern int fsnotify_fasync(int fd, struct file *file, int on); | |
7053aee2 JK |
306 | /* Free event from memory */ |
307 | extern void fsnotify_destroy_event(struct fsnotify_group *group, | |
308 | struct fsnotify_event *event); | |
a2d8bc6c | 309 | /* attach the event to the group notification queue */ |
8ba8fa91 JK |
310 | extern int fsnotify_add_event(struct fsnotify_group *group, |
311 | struct fsnotify_event *event, | |
312 | int (*merge)(struct list_head *, | |
313 | struct fsnotify_event *)); | |
5838d444 JK |
314 | /* Remove passed event from groups notification queue */ |
315 | extern void fsnotify_remove_event(struct fsnotify_group *group, struct fsnotify_event *event); | |
a2d8bc6c EP |
316 | /* true if the group notification queue is empty */ |
317 | extern bool fsnotify_notify_queue_is_empty(struct fsnotify_group *group); | |
318 | /* return, but do not dequeue the first event on the notification queue */ | |
8ba8fa91 | 319 | extern struct fsnotify_event *fsnotify_peek_first_event(struct fsnotify_group *group); |
e4aff117 | 320 | /* return AND dequeue the first event on the notification queue */ |
8ba8fa91 | 321 | extern struct fsnotify_event *fsnotify_remove_first_event(struct fsnotify_group *group); |
a2d8bc6c | 322 | |
3be25f49 EP |
323 | /* functions used to manipulate the marks attached to inodes */ |
324 | ||
0d48b7f0 EP |
325 | /* run all marks associated with a vfsmount and update mnt->mnt_fsnotify_mask */ |
326 | extern void fsnotify_recalc_vfsmount_mask(struct vfsmount *mnt); | |
3be25f49 EP |
327 | /* run all marks associated with an inode and update inode->i_fsnotify_mask */ |
328 | extern void fsnotify_recalc_inode_mask(struct inode *inode); | |
841bdc10 | 329 | extern void fsnotify_init_mark(struct fsnotify_mark *mark, void (*free_mark)(struct fsnotify_mark *mark)); |
3be25f49 | 330 | /* find (and take a reference) to a mark associated with group and inode */ |
5444e298 | 331 | extern struct fsnotify_mark *fsnotify_find_inode_mark(struct fsnotify_group *group, struct inode *inode); |
1c529063 EP |
332 | /* find (and take a reference) to a mark associated with group and vfsmount */ |
333 | extern struct fsnotify_mark *fsnotify_find_vfsmount_mark(struct fsnotify_group *group, struct vfsmount *mnt); | |
9e1c7432 | 334 | /* copy the values from old into new */ |
e61ce867 | 335 | extern void fsnotify_duplicate_mark(struct fsnotify_mark *new, struct fsnotify_mark *old); |
33af5e32 EP |
336 | /* set the ignored_mask of a mark */ |
337 | extern void fsnotify_set_mark_ignored_mask_locked(struct fsnotify_mark *mark, __u32 mask); | |
90b1e7a5 EP |
338 | /* set the mask of a mark (might pin the object into memory */ |
339 | extern void fsnotify_set_mark_mask_locked(struct fsnotify_mark *mark, __u32 mask); | |
3be25f49 | 340 | /* attach the mark to both the group and the inode */ |
5444e298 EP |
341 | extern int fsnotify_add_mark(struct fsnotify_mark *mark, struct fsnotify_group *group, |
342 | struct inode *inode, struct vfsmount *mnt, int allow_dups); | |
d5a335b8 LS |
343 | extern int fsnotify_add_mark_locked(struct fsnotify_mark *mark, struct fsnotify_group *group, |
344 | struct inode *inode, struct vfsmount *mnt, int allow_dups); | |
e2a29943 LS |
345 | /* given a group and a mark, flag mark to be freed when all references are dropped */ |
346 | extern void fsnotify_destroy_mark(struct fsnotify_mark *mark, | |
347 | struct fsnotify_group *group); | |
d5a335b8 LS |
348 | extern void fsnotify_destroy_mark_locked(struct fsnotify_mark *mark, |
349 | struct fsnotify_group *group); | |
4d92604c EP |
350 | /* run all the marks in a group, and clear all of the vfsmount marks */ |
351 | extern void fsnotify_clear_vfsmount_marks_by_group(struct fsnotify_group *group); | |
352 | /* run all the marks in a group, and clear all of the inode marks */ | |
353 | extern void fsnotify_clear_inode_marks_by_group(struct fsnotify_group *group); | |
354 | /* run all the marks in a group, and clear all of the marks where mark->flags & flags is true*/ | |
355 | extern void fsnotify_clear_marks_by_group_flags(struct fsnotify_group *group, unsigned int flags); | |
3be25f49 EP |
356 | /* run all the marks in a group, and flag them to be freed */ |
357 | extern void fsnotify_clear_marks_by_group(struct fsnotify_group *group); | |
841bdc10 EP |
358 | extern void fsnotify_get_mark(struct fsnotify_mark *mark); |
359 | extern void fsnotify_put_mark(struct fsnotify_mark *mark); | |
164bc619 | 360 | extern void fsnotify_unmount_inodes(struct list_head *list); |
3be25f49 | 361 | |
90586523 | 362 | /* put here because inotify does some weird stuff when destroying watches */ |
7053aee2 JK |
363 | extern void fsnotify_init_event(struct fsnotify_event *event, |
364 | struct inode *to_tell, u32 mask); | |
b4e4e140 | 365 | |
90586523 EP |
366 | #else |
367 | ||
c4ec54b4 EP |
368 | static inline int fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, |
369 | const unsigned char *name, u32 cookie) | |
370 | { | |
371 | return 0; | |
372 | } | |
3be25f49 | 373 | |
52420392 EP |
374 | static inline int __fsnotify_parent(struct path *path, struct dentry *dentry, __u32 mask) |
375 | { | |
376 | return 0; | |
377 | } | |
c28f7e56 | 378 | |
3be25f49 EP |
379 | static inline void __fsnotify_inode_delete(struct inode *inode) |
380 | {} | |
381 | ||
ca9c726e AG |
382 | static inline void __fsnotify_vfsmount_delete(struct vfsmount *mnt) |
383 | {} | |
384 | ||
c28f7e56 EP |
385 | static inline void __fsnotify_update_dcache_flags(struct dentry *dentry) |
386 | {} | |
387 | ||
388 | static inline void __fsnotify_d_instantiate(struct dentry *dentry, struct inode *inode) | |
389 | {} | |
390 | ||
47882c6f EP |
391 | static inline u32 fsnotify_get_cookie(void) |
392 | { | |
393 | return 0; | |
394 | } | |
395 | ||
164bc619 EP |
396 | static inline void fsnotify_unmount_inodes(struct list_head *list) |
397 | {} | |
398 | ||
90586523 EP |
399 | #endif /* CONFIG_FSNOTIFY */ |
400 | ||
401 | #endif /* __KERNEL __ */ | |
402 | ||
403 | #endif /* __LINUX_FSNOTIFY_BACKEND_H */ |