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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 | * | |
3be25f49 EP |
87 | * should_send_event - given a group, inode, and mask this function determines |
88 | * if the group is interested in this event. | |
90586523 EP |
89 | * handle_event - main call for a group to handle an fs event |
90 | * free_group_priv - called when a group refcnt hits 0 to clean up the private union | |
6960b0d9 LS |
91 | * freeing_mark - called when a mark is being destroyed for some reason. The group |
92 | * MUST be holding a reference on each mark and that reference must be | |
93 | * dropped in this function. inotify uses this function to send | |
94 | * userspace messages that marks have been removed. | |
90586523 EP |
95 | */ |
96 | struct fsnotify_ops { | |
ce8f76fb | 97 | int (*handle_event)(struct fsnotify_group *group, |
7053aee2 | 98 | struct inode *inode, |
ce8f76fb EP |
99 | struct fsnotify_mark *inode_mark, |
100 | struct fsnotify_mark *vfsmount_mark, | |
7053aee2 | 101 | u32 mask, void *data, int data_type, |
45a22f4c | 102 | const unsigned char *file_name, u32 cookie); |
90586523 | 103 | void (*free_group_priv)(struct fsnotify_group *group); |
841bdc10 | 104 | void (*freeing_mark)(struct fsnotify_mark *mark, struct fsnotify_group *group); |
7053aee2 JK |
105 | void (*free_event)(struct fsnotify_event *event); |
106 | }; | |
107 | ||
108 | /* | |
109 | * all of the information about the original object we want to now send to | |
110 | * a group. If you want to carry more info from the accessing task to the | |
111 | * listener this structure is where you need to be adding fields. | |
112 | */ | |
113 | struct fsnotify_event { | |
114 | struct list_head list; | |
115 | /* inode may ONLY be dereferenced during handle_event(). */ | |
116 | struct inode *inode; /* either the inode the event happened to or its parent */ | |
117 | u32 mask; /* the type of access, bitwise OR for FS_* event types */ | |
90586523 EP |
118 | }; |
119 | ||
120 | /* | |
121 | * A group is a "thing" that wants to receive notification about filesystem | |
122 | * events. The mask holds the subset of event types this group cares about. | |
123 | * refcnt on a group is up to the implementor and at any moment if it goes 0 | |
124 | * everything will be cleaned up. | |
125 | */ | |
126 | struct fsnotify_group { | |
90586523 EP |
127 | /* |
128 | * How the refcnt is used is up to each group. When the refcnt hits 0 | |
129 | * fsnotify will clean up all of the resources associated with this group. | |
130 | * As an example, the dnotify group will always have a refcnt=1 and that | |
131 | * will never change. Inotify, on the other hand, has a group per | |
132 | * inotify_init() and the refcnt will hit 0 only when that fd has been | |
133 | * closed. | |
134 | */ | |
135 | atomic_t refcnt; /* things with interest in this group */ | |
90586523 EP |
136 | |
137 | const struct fsnotify_ops *ops; /* how this group handles things */ | |
138 | ||
a2d8bc6c EP |
139 | /* needed to send notification to userspace */ |
140 | struct mutex notification_mutex; /* protect the notification_list */ | |
141 | struct list_head notification_list; /* list of event_holder this group needs to send to userspace */ | |
142 | wait_queue_head_t notification_waitq; /* read() on the notification file blocks on this waitq */ | |
143 | unsigned int q_len; /* events on the queue */ | |
144 | unsigned int max_events; /* maximum events allowed on the list */ | |
6ad2d4e3 EP |
145 | /* |
146 | * Valid fsnotify group priorities. Events are send in order from highest | |
147 | * priority to lowest priority. We default to the lowest priority. | |
148 | */ | |
149 | #define FS_PRIO_0 0 /* normal notifiers, no permissions */ | |
150 | #define FS_PRIO_1 1 /* fanotify content based access control */ | |
151 | #define FS_PRIO_2 2 /* fanotify pre-content access */ | |
152 | unsigned int priority; | |
a2d8bc6c | 153 | |
e61ce867 | 154 | /* stores all fastpath marks assoc with this group so they can be cleaned on unregister */ |
986ab098 | 155 | struct mutex mark_mutex; /* protect marks_list */ |
841bdc10 | 156 | atomic_t num_marks; /* 1 for each mark and 1 for not being |
3be25f49 EP |
157 | * past the point of no return when freeing |
158 | * a group */ | |
e61ce867 | 159 | struct list_head marks_list; /* all inode marks for this group */ |
3be25f49 | 160 | |
7053aee2 JK |
161 | struct fasync_struct *fsn_fa; /* async notification */ |
162 | ||
163 | struct fsnotify_event overflow_event; /* Event we queue when the | |
164 | * notification list is too | |
165 | * full */ | |
0a6b6bd5 | 166 | |
90586523 EP |
167 | /* groups can define private fields here or use the void *private */ |
168 | union { | |
169 | void *private; | |
63c882a0 EP |
170 | #ifdef CONFIG_INOTIFY_USER |
171 | struct inotify_group_private_data { | |
172 | spinlock_t idr_lock; | |
173 | struct idr idr; | |
63c882a0 EP |
174 | struct user_struct *user; |
175 | } inotify_data; | |
9e66e423 | 176 | #endif |
80af2588 | 177 | #ifdef CONFIG_FANOTIFY |
9e66e423 | 178 | struct fanotify_group_private_data { |
80af2588 | 179 | #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS |
9e66e423 EP |
180 | /* allows a group to block waiting for a userspace response */ |
181 | struct mutex access_mutex; | |
182 | struct list_head access_list; | |
183 | wait_queue_head_t access_waitq; | |
09e5f14e | 184 | atomic_t bypass_perm; |
80af2588 EP |
185 | #endif /* CONFIG_FANOTIFY_ACCESS_PERMISSIONS */ |
186 | int f_flags; | |
e7099d8a | 187 | unsigned int max_marks; |
4afeff85 | 188 | struct user_struct *user; |
9e66e423 | 189 | } fanotify_data; |
80af2588 | 190 | #endif /* CONFIG_FANOTIFY */ |
90586523 EP |
191 | }; |
192 | }; | |
193 | ||
90586523 EP |
194 | /* when calling fsnotify tell it if the data is a path or inode */ |
195 | #define FSNOTIFY_EVENT_NONE 0 | |
2069601b | 196 | #define FSNOTIFY_EVENT_PATH 1 |
90586523 | 197 | #define FSNOTIFY_EVENT_INODE 2 |
90586523 | 198 | |
2823e04d | 199 | /* |
e61ce867 | 200 | * Inode specific fields in an fsnotify_mark |
2823e04d EP |
201 | */ |
202 | struct fsnotify_inode_mark { | |
841bdc10 | 203 | struct inode *inode; /* inode this mark is associated with */ |
e61ce867 | 204 | struct hlist_node i_list; /* list of marks by inode->i_fsnotify_marks */ |
2823e04d EP |
205 | struct list_head free_i_list; /* tmp list used when freeing this mark */ |
206 | }; | |
207 | ||
4136510d | 208 | /* |
e61ce867 | 209 | * Mount point specific fields in an fsnotify_mark |
4136510d EP |
210 | */ |
211 | struct fsnotify_vfsmount_mark { | |
841bdc10 | 212 | struct vfsmount *mnt; /* vfsmount this mark is associated with */ |
e61ce867 | 213 | struct hlist_node m_list; /* list of marks by inode->i_fsnotify_marks */ |
4136510d EP |
214 | struct list_head free_m_list; /* tmp list used when freeing this mark */ |
215 | }; | |
216 | ||
3be25f49 | 217 | /* |
841bdc10 | 218 | * a mark is simply an object attached to an in core inode which allows an |
3be25f49 EP |
219 | * fsnotify listener to indicate they are either no longer interested in events |
220 | * of a type matching mask or only interested in those events. | |
221 | * | |
222 | * these are flushed when an inode is evicted from core and may be flushed | |
223 | * when the inode is modified (as seen by fsnotify_access). Some fsnotify users | |
224 | * (such as dnotify) will flush these when the open fd is closed and not at | |
225 | * inode eviction or modification. | |
226 | */ | |
e61ce867 | 227 | struct fsnotify_mark { |
841bdc10 | 228 | __u32 mask; /* mask this mark is for */ |
3be25f49 EP |
229 | /* we hold ref for each i_list and g_list. also one ref for each 'thing' |
230 | * in kernel that found and may be using this mark. */ | |
231 | atomic_t refcnt; /* active things looking at this mark */ | |
841bdc10 | 232 | struct fsnotify_group *group; /* group this mark is for */ |
e61ce867 | 233 | struct list_head g_list; /* list of marks by group->i_fsnotify_marks */ |
2823e04d EP |
234 | spinlock_t lock; /* protect group and inode */ |
235 | union { | |
236 | struct fsnotify_inode_mark i; | |
4136510d | 237 | struct fsnotify_vfsmount_mark m; |
2823e04d | 238 | }; |
d8c0fca6 | 239 | __u32 ignored_mask; /* events types to ignore */ |
90b1e7a5 EP |
240 | #define FSNOTIFY_MARK_FLAG_INODE 0x01 |
241 | #define FSNOTIFY_MARK_FLAG_VFSMOUNT 0x02 | |
242 | #define FSNOTIFY_MARK_FLAG_OBJECT_PINNED 0x04 | |
c908370f | 243 | #define FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY 0x08 |
700307a2 | 244 | #define FSNOTIFY_MARK_FLAG_ALIVE 0x10 |
098cf2fc | 245 | unsigned int flags; /* vfsmount or inode mark? */ |
75c1be48 | 246 | struct list_head destroy_list; |
841bdc10 | 247 | void (*free_mark)(struct fsnotify_mark *mark); /* called on final put+free */ |
3be25f49 EP |
248 | }; |
249 | ||
90586523 EP |
250 | #ifdef CONFIG_FSNOTIFY |
251 | ||
252 | /* called from the vfs helpers */ | |
253 | ||
254 | /* main fsnotify call to send events */ | |
c4ec54b4 EP |
255 | extern int fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, |
256 | const unsigned char *name, u32 cookie); | |
52420392 | 257 | extern int __fsnotify_parent(struct path *path, struct dentry *dentry, __u32 mask); |
3be25f49 | 258 | extern void __fsnotify_inode_delete(struct inode *inode); |
ca9c726e | 259 | extern void __fsnotify_vfsmount_delete(struct vfsmount *mnt); |
47882c6f | 260 | extern u32 fsnotify_get_cookie(void); |
90586523 | 261 | |
c28f7e56 EP |
262 | static inline int fsnotify_inode_watches_children(struct inode *inode) |
263 | { | |
264 | /* FS_EVENT_ON_CHILD is set if the inode may care */ | |
265 | if (!(inode->i_fsnotify_mask & FS_EVENT_ON_CHILD)) | |
266 | return 0; | |
267 | /* this inode might care about child events, does it care about the | |
268 | * specific set of events that can happen on a child? */ | |
269 | return inode->i_fsnotify_mask & FS_EVENTS_POSS_ON_CHILD; | |
270 | } | |
271 | ||
272 | /* | |
273 | * Update the dentry with a flag indicating the interest of its parent to receive | |
274 | * filesystem events when those events happens to this dentry->d_inode. | |
275 | */ | |
276 | static inline void __fsnotify_update_dcache_flags(struct dentry *dentry) | |
277 | { | |
278 | struct dentry *parent; | |
279 | ||
c28f7e56 EP |
280 | assert_spin_locked(&dentry->d_lock); |
281 | ||
b5c84bf6 NP |
282 | /* |
283 | * Serialisation of setting PARENT_WATCHED on the dentries is provided | |
284 | * by d_lock. If inotify_inode_watched changes after we have taken | |
285 | * d_lock, the following __fsnotify_update_child_dentry_flags call will | |
286 | * find our entry, so it will spin until we complete here, and update | |
287 | * us with the new state. | |
288 | */ | |
c28f7e56 | 289 | parent = dentry->d_parent; |
e6ce3066 | 290 | if (parent->d_inode && fsnotify_inode_watches_children(parent->d_inode)) |
c28f7e56 EP |
291 | dentry->d_flags |= DCACHE_FSNOTIFY_PARENT_WATCHED; |
292 | else | |
293 | dentry->d_flags &= ~DCACHE_FSNOTIFY_PARENT_WATCHED; | |
294 | } | |
295 | ||
296 | /* | |
297 | * fsnotify_d_instantiate - instantiate a dentry for inode | |
c28f7e56 EP |
298 | */ |
299 | static inline void __fsnotify_d_instantiate(struct dentry *dentry, struct inode *inode) | |
300 | { | |
301 | if (!inode) | |
302 | return; | |
303 | ||
c28f7e56 EP |
304 | spin_lock(&dentry->d_lock); |
305 | __fsnotify_update_dcache_flags(dentry); | |
306 | spin_unlock(&dentry->d_lock); | |
307 | } | |
90586523 EP |
308 | |
309 | /* called from fsnotify listeners, such as fanotify or dnotify */ | |
310 | ||
98612952 | 311 | /* create a new group */ |
0d2e2a1d | 312 | extern struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops); |
98612952 LS |
313 | /* get reference to a group */ |
314 | extern void fsnotify_get_group(struct fsnotify_group *group); | |
ffab8340 | 315 | /* drop reference on a group from fsnotify_alloc_group */ |
90586523 | 316 | extern void fsnotify_put_group(struct fsnotify_group *group); |
d8153d4d LS |
317 | /* destroy group */ |
318 | extern void fsnotify_destroy_group(struct fsnotify_group *group); | |
0a6b6bd5 EP |
319 | /* fasync handler function */ |
320 | extern int fsnotify_fasync(int fd, struct file *file, int on); | |
7053aee2 JK |
321 | /* Free event from memory */ |
322 | extern void fsnotify_destroy_event(struct fsnotify_group *group, | |
323 | struct fsnotify_event *event); | |
a2d8bc6c | 324 | /* attach the event to the group notification queue */ |
83c0e1b4 JK |
325 | extern int fsnotify_add_notify_event(struct fsnotify_group *group, |
326 | struct fsnotify_event *event, | |
327 | int (*merge)(struct list_head *, | |
328 | struct fsnotify_event *)); | |
a2d8bc6c EP |
329 | /* true if the group notification queue is empty */ |
330 | extern bool fsnotify_notify_queue_is_empty(struct fsnotify_group *group); | |
331 | /* return, but do not dequeue the first event on the notification queue */ | |
332 | extern struct fsnotify_event *fsnotify_peek_notify_event(struct fsnotify_group *group); | |
e4aff117 | 333 | /* return AND dequeue the first event on the notification queue */ |
a2d8bc6c EP |
334 | extern struct fsnotify_event *fsnotify_remove_notify_event(struct fsnotify_group *group); |
335 | ||
3be25f49 EP |
336 | /* functions used to manipulate the marks attached to inodes */ |
337 | ||
0d48b7f0 EP |
338 | /* run all marks associated with a vfsmount and update mnt->mnt_fsnotify_mask */ |
339 | extern void fsnotify_recalc_vfsmount_mask(struct vfsmount *mnt); | |
3be25f49 EP |
340 | /* run all marks associated with an inode and update inode->i_fsnotify_mask */ |
341 | extern void fsnotify_recalc_inode_mask(struct inode *inode); | |
841bdc10 | 342 | extern void fsnotify_init_mark(struct fsnotify_mark *mark, void (*free_mark)(struct fsnotify_mark *mark)); |
3be25f49 | 343 | /* find (and take a reference) to a mark associated with group and inode */ |
5444e298 | 344 | extern struct fsnotify_mark *fsnotify_find_inode_mark(struct fsnotify_group *group, struct inode *inode); |
1c529063 EP |
345 | /* find (and take a reference) to a mark associated with group and vfsmount */ |
346 | extern struct fsnotify_mark *fsnotify_find_vfsmount_mark(struct fsnotify_group *group, struct vfsmount *mnt); | |
9e1c7432 | 347 | /* copy the values from old into new */ |
e61ce867 | 348 | extern void fsnotify_duplicate_mark(struct fsnotify_mark *new, struct fsnotify_mark *old); |
33af5e32 EP |
349 | /* set the ignored_mask of a mark */ |
350 | extern void fsnotify_set_mark_ignored_mask_locked(struct fsnotify_mark *mark, __u32 mask); | |
90b1e7a5 EP |
351 | /* set the mask of a mark (might pin the object into memory */ |
352 | extern void fsnotify_set_mark_mask_locked(struct fsnotify_mark *mark, __u32 mask); | |
3be25f49 | 353 | /* attach the mark to both the group and the inode */ |
5444e298 EP |
354 | extern int fsnotify_add_mark(struct fsnotify_mark *mark, struct fsnotify_group *group, |
355 | struct inode *inode, struct vfsmount *mnt, int allow_dups); | |
d5a335b8 LS |
356 | extern int fsnotify_add_mark_locked(struct fsnotify_mark *mark, struct fsnotify_group *group, |
357 | struct inode *inode, struct vfsmount *mnt, int allow_dups); | |
e2a29943 LS |
358 | /* given a group and a mark, flag mark to be freed when all references are dropped */ |
359 | extern void fsnotify_destroy_mark(struct fsnotify_mark *mark, | |
360 | struct fsnotify_group *group); | |
d5a335b8 LS |
361 | extern void fsnotify_destroy_mark_locked(struct fsnotify_mark *mark, |
362 | struct fsnotify_group *group); | |
4d92604c EP |
363 | /* run all the marks in a group, and clear all of the vfsmount marks */ |
364 | extern void fsnotify_clear_vfsmount_marks_by_group(struct fsnotify_group *group); | |
365 | /* run all the marks in a group, and clear all of the inode marks */ | |
366 | extern void fsnotify_clear_inode_marks_by_group(struct fsnotify_group *group); | |
367 | /* run all the marks in a group, and clear all of the marks where mark->flags & flags is true*/ | |
368 | extern void fsnotify_clear_marks_by_group_flags(struct fsnotify_group *group, unsigned int flags); | |
3be25f49 EP |
369 | /* run all the marks in a group, and flag them to be freed */ |
370 | extern void fsnotify_clear_marks_by_group(struct fsnotify_group *group); | |
841bdc10 EP |
371 | extern void fsnotify_get_mark(struct fsnotify_mark *mark); |
372 | extern void fsnotify_put_mark(struct fsnotify_mark *mark); | |
164bc619 | 373 | extern void fsnotify_unmount_inodes(struct list_head *list); |
3be25f49 | 374 | |
90586523 | 375 | /* put here because inotify does some weird stuff when destroying watches */ |
7053aee2 JK |
376 | extern void fsnotify_init_event(struct fsnotify_event *event, |
377 | struct inode *to_tell, u32 mask); | |
b4e4e140 | 378 | |
90586523 EP |
379 | #else |
380 | ||
c4ec54b4 EP |
381 | static inline int fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, |
382 | const unsigned char *name, u32 cookie) | |
383 | { | |
384 | return 0; | |
385 | } | |
3be25f49 | 386 | |
52420392 EP |
387 | static inline int __fsnotify_parent(struct path *path, struct dentry *dentry, __u32 mask) |
388 | { | |
389 | return 0; | |
390 | } | |
c28f7e56 | 391 | |
3be25f49 EP |
392 | static inline void __fsnotify_inode_delete(struct inode *inode) |
393 | {} | |
394 | ||
ca9c726e AG |
395 | static inline void __fsnotify_vfsmount_delete(struct vfsmount *mnt) |
396 | {} | |
397 | ||
c28f7e56 EP |
398 | static inline void __fsnotify_update_dcache_flags(struct dentry *dentry) |
399 | {} | |
400 | ||
401 | static inline void __fsnotify_d_instantiate(struct dentry *dentry, struct inode *inode) | |
402 | {} | |
403 | ||
47882c6f EP |
404 | static inline u32 fsnotify_get_cookie(void) |
405 | { | |
406 | return 0; | |
407 | } | |
408 | ||
164bc619 EP |
409 | static inline void fsnotify_unmount_inodes(struct list_head *list) |
410 | {} | |
411 | ||
90586523 EP |
412 | #endif /* CONFIG_FSNOTIFY */ |
413 | ||
414 | #endif /* __KERNEL __ */ | |
415 | ||
416 | #endif /* __LINUX_FSNOTIFY_BACKEND_H */ |