Commit | Line | Data |
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11637e4b | 1 | #include <linux/fcntl.h> |
2a3edf86 | 2 | #include <linux/file.h> |
11637e4b | 3 | #include <linux/fs.h> |
52c923dd | 4 | #include <linux/anon_inodes.h> |
11637e4b | 5 | #include <linux/fsnotify_backend.h> |
2a3edf86 | 6 | #include <linux/init.h> |
a1014f10 | 7 | #include <linux/mount.h> |
2a3edf86 | 8 | #include <linux/namei.h> |
a1014f10 | 9 | #include <linux/poll.h> |
11637e4b EP |
10 | #include <linux/security.h> |
11 | #include <linux/syscalls.h> | |
2a3edf86 | 12 | #include <linux/types.h> |
a1014f10 EP |
13 | #include <linux/uaccess.h> |
14 | ||
15 | #include <asm/ioctls.h> | |
11637e4b EP |
16 | |
17 | #include "fanotify.h" | |
18 | ||
2a3edf86 EP |
19 | static struct kmem_cache *fanotify_mark_cache __read_mostly; |
20 | ||
a1014f10 EP |
21 | /* |
22 | * Get an fsnotify notification event if one exists and is small | |
23 | * enough to fit in "count". Return an error pointer if the count | |
24 | * is not large enough. | |
25 | * | |
26 | * Called with the group->notification_mutex held. | |
27 | */ | |
28 | static struct fsnotify_event *get_one_event(struct fsnotify_group *group, | |
29 | size_t count) | |
30 | { | |
31 | BUG_ON(!mutex_is_locked(&group->notification_mutex)); | |
32 | ||
33 | pr_debug("%s: group=%p count=%zd\n", __func__, group, count); | |
34 | ||
35 | if (fsnotify_notify_queue_is_empty(group)) | |
36 | return NULL; | |
37 | ||
38 | if (FAN_EVENT_METADATA_LEN > count) | |
39 | return ERR_PTR(-EINVAL); | |
40 | ||
41 | /* held the notification_mutex the whole time, so this is the | |
42 | * same event we peeked above */ | |
43 | return fsnotify_remove_notify_event(group); | |
44 | } | |
45 | ||
22aa425d | 46 | static int create_fd(struct fsnotify_group *group, struct fsnotify_event *event) |
a1014f10 EP |
47 | { |
48 | int client_fd; | |
49 | struct dentry *dentry; | |
50 | struct vfsmount *mnt; | |
51 | struct file *new_file; | |
52 | ||
22aa425d | 53 | pr_debug("%s: group=%p event=%p\n", __func__, group, event); |
a1014f10 EP |
54 | |
55 | client_fd = get_unused_fd(); | |
56 | if (client_fd < 0) | |
57 | return client_fd; | |
58 | ||
59 | if (event->data_type != FSNOTIFY_EVENT_PATH) { | |
60 | WARN_ON(1); | |
61 | put_unused_fd(client_fd); | |
62 | return -EINVAL; | |
63 | } | |
64 | ||
65 | /* | |
66 | * we need a new file handle for the userspace program so it can read even if it was | |
67 | * originally opened O_WRONLY. | |
68 | */ | |
69 | dentry = dget(event->path.dentry); | |
70 | mnt = mntget(event->path.mnt); | |
71 | /* it's possible this event was an overflow event. in that case dentry and mnt | |
72 | * are NULL; That's fine, just don't call dentry open */ | |
73 | if (dentry && mnt) | |
74 | new_file = dentry_open(dentry, mnt, | |
75 | O_RDONLY | O_LARGEFILE | FMODE_NONOTIFY, | |
76 | current_cred()); | |
77 | else | |
78 | new_file = ERR_PTR(-EOVERFLOW); | |
79 | if (IS_ERR(new_file)) { | |
80 | /* | |
81 | * we still send an event even if we can't open the file. this | |
82 | * can happen when say tasks are gone and we try to open their | |
83 | * /proc files or we try to open a WRONLY file like in sysfs | |
84 | * we just send the errno to userspace since there isn't much | |
85 | * else we can do. | |
86 | */ | |
87 | put_unused_fd(client_fd); | |
88 | client_fd = PTR_ERR(new_file); | |
89 | } else { | |
90 | fd_install(client_fd, new_file); | |
91 | } | |
92 | ||
22aa425d | 93 | return client_fd; |
a1014f10 EP |
94 | } |
95 | ||
96 | static ssize_t fill_event_metadata(struct fsnotify_group *group, | |
97 | struct fanotify_event_metadata *metadata, | |
98 | struct fsnotify_event *event) | |
99 | { | |
100 | pr_debug("%s: group=%p metadata=%p event=%p\n", __func__, | |
101 | group, metadata, event); | |
102 | ||
103 | metadata->event_len = FAN_EVENT_METADATA_LEN; | |
104 | metadata->vers = FANOTIFY_METADATA_VERSION; | |
105 | metadata->mask = fanotify_outgoing_mask(event->mask); | |
32c32632 | 106 | metadata->pid = pid_vnr(event->tgid); |
22aa425d | 107 | metadata->fd = create_fd(group, event); |
a1014f10 | 108 | |
22aa425d | 109 | return metadata->fd; |
a1014f10 EP |
110 | } |
111 | ||
112 | static ssize_t copy_event_to_user(struct fsnotify_group *group, | |
113 | struct fsnotify_event *event, | |
114 | char __user *buf) | |
115 | { | |
116 | struct fanotify_event_metadata fanotify_event_metadata; | |
117 | int ret; | |
118 | ||
119 | pr_debug("%s: group=%p event=%p\n", __func__, group, event); | |
120 | ||
121 | ret = fill_event_metadata(group, &fanotify_event_metadata, event); | |
22aa425d | 122 | if (ret < 0) |
a1014f10 EP |
123 | return ret; |
124 | ||
125 | if (copy_to_user(buf, &fanotify_event_metadata, FAN_EVENT_METADATA_LEN)) | |
126 | return -EFAULT; | |
127 | ||
128 | return FAN_EVENT_METADATA_LEN; | |
129 | } | |
130 | ||
131 | /* intofiy userspace file descriptor functions */ | |
132 | static unsigned int fanotify_poll(struct file *file, poll_table *wait) | |
133 | { | |
134 | struct fsnotify_group *group = file->private_data; | |
135 | int ret = 0; | |
136 | ||
137 | poll_wait(file, &group->notification_waitq, wait); | |
138 | mutex_lock(&group->notification_mutex); | |
139 | if (!fsnotify_notify_queue_is_empty(group)) | |
140 | ret = POLLIN | POLLRDNORM; | |
141 | mutex_unlock(&group->notification_mutex); | |
142 | ||
143 | return ret; | |
144 | } | |
145 | ||
146 | static ssize_t fanotify_read(struct file *file, char __user *buf, | |
147 | size_t count, loff_t *pos) | |
148 | { | |
149 | struct fsnotify_group *group; | |
150 | struct fsnotify_event *kevent; | |
151 | char __user *start; | |
152 | int ret; | |
153 | DEFINE_WAIT(wait); | |
154 | ||
155 | start = buf; | |
156 | group = file->private_data; | |
157 | ||
158 | pr_debug("%s: group=%p\n", __func__, group); | |
159 | ||
160 | while (1) { | |
161 | prepare_to_wait(&group->notification_waitq, &wait, TASK_INTERRUPTIBLE); | |
162 | ||
163 | mutex_lock(&group->notification_mutex); | |
164 | kevent = get_one_event(group, count); | |
165 | mutex_unlock(&group->notification_mutex); | |
166 | ||
167 | if (kevent) { | |
168 | ret = PTR_ERR(kevent); | |
169 | if (IS_ERR(kevent)) | |
170 | break; | |
171 | ret = copy_event_to_user(group, kevent, buf); | |
172 | fsnotify_put_event(kevent); | |
173 | if (ret < 0) | |
174 | break; | |
175 | buf += ret; | |
176 | count -= ret; | |
177 | continue; | |
178 | } | |
179 | ||
180 | ret = -EAGAIN; | |
181 | if (file->f_flags & O_NONBLOCK) | |
182 | break; | |
183 | ret = -EINTR; | |
184 | if (signal_pending(current)) | |
185 | break; | |
186 | ||
187 | if (start != buf) | |
188 | break; | |
189 | ||
190 | schedule(); | |
191 | } | |
192 | ||
193 | finish_wait(&group->notification_waitq, &wait); | |
194 | if (start != buf && ret != -EFAULT) | |
195 | ret = buf - start; | |
196 | return ret; | |
197 | } | |
198 | ||
52c923dd EP |
199 | static int fanotify_release(struct inode *ignored, struct file *file) |
200 | { | |
201 | struct fsnotify_group *group = file->private_data; | |
202 | ||
203 | pr_debug("%s: file=%p group=%p\n", __func__, file, group); | |
204 | ||
205 | /* matches the fanotify_init->fsnotify_alloc_group */ | |
206 | fsnotify_put_group(group); | |
207 | ||
208 | return 0; | |
209 | } | |
210 | ||
a1014f10 EP |
211 | static long fanotify_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
212 | { | |
213 | struct fsnotify_group *group; | |
214 | struct fsnotify_event_holder *holder; | |
215 | void __user *p; | |
216 | int ret = -ENOTTY; | |
217 | size_t send_len = 0; | |
218 | ||
219 | group = file->private_data; | |
220 | ||
221 | p = (void __user *) arg; | |
222 | ||
223 | switch (cmd) { | |
224 | case FIONREAD: | |
225 | mutex_lock(&group->notification_mutex); | |
226 | list_for_each_entry(holder, &group->notification_list, event_list) | |
227 | send_len += FAN_EVENT_METADATA_LEN; | |
228 | mutex_unlock(&group->notification_mutex); | |
229 | ret = put_user(send_len, (int __user *) p); | |
230 | break; | |
231 | } | |
232 | ||
233 | return ret; | |
234 | } | |
235 | ||
52c923dd | 236 | static const struct file_operations fanotify_fops = { |
a1014f10 EP |
237 | .poll = fanotify_poll, |
238 | .read = fanotify_read, | |
52c923dd EP |
239 | .fasync = NULL, |
240 | .release = fanotify_release, | |
a1014f10 EP |
241 | .unlocked_ioctl = fanotify_ioctl, |
242 | .compat_ioctl = fanotify_ioctl, | |
52c923dd EP |
243 | }; |
244 | ||
2a3edf86 EP |
245 | static void fanotify_free_mark(struct fsnotify_mark *fsn_mark) |
246 | { | |
247 | kmem_cache_free(fanotify_mark_cache, fsn_mark); | |
248 | } | |
249 | ||
250 | static int fanotify_find_path(int dfd, const char __user *filename, | |
251 | struct path *path, unsigned int flags) | |
252 | { | |
253 | int ret; | |
254 | ||
255 | pr_debug("%s: dfd=%d filename=%p flags=%x\n", __func__, | |
256 | dfd, filename, flags); | |
257 | ||
258 | if (filename == NULL) { | |
259 | struct file *file; | |
260 | int fput_needed; | |
261 | ||
262 | ret = -EBADF; | |
263 | file = fget_light(dfd, &fput_needed); | |
264 | if (!file) | |
265 | goto out; | |
266 | ||
267 | ret = -ENOTDIR; | |
268 | if ((flags & FAN_MARK_ONLYDIR) && | |
269 | !(S_ISDIR(file->f_path.dentry->d_inode->i_mode))) { | |
270 | fput_light(file, fput_needed); | |
271 | goto out; | |
272 | } | |
273 | ||
274 | *path = file->f_path; | |
275 | path_get(path); | |
276 | fput_light(file, fput_needed); | |
277 | } else { | |
278 | unsigned int lookup_flags = 0; | |
279 | ||
280 | if (!(flags & FAN_MARK_DONT_FOLLOW)) | |
281 | lookup_flags |= LOOKUP_FOLLOW; | |
282 | if (flags & FAN_MARK_ONLYDIR) | |
283 | lookup_flags |= LOOKUP_DIRECTORY; | |
284 | ||
285 | ret = user_path_at(dfd, filename, lookup_flags, path); | |
286 | if (ret) | |
287 | goto out; | |
288 | } | |
289 | ||
290 | /* you can only watch an inode if you have read permissions on it */ | |
291 | ret = inode_permission(path->dentry->d_inode, MAY_READ); | |
292 | if (ret) | |
293 | path_put(path); | |
294 | out: | |
295 | return ret; | |
296 | } | |
297 | ||
088b09b0 AG |
298 | static __u32 fanotify_mark_remove_from_mask(struct fsnotify_mark *fsn_mark, __u32 mask) |
299 | { | |
300 | __u32 oldmask; | |
301 | ||
302 | spin_lock(&fsn_mark->lock); | |
303 | oldmask = fsn_mark->mask; | |
304 | fsn_mark->mask = oldmask & ~mask; | |
305 | spin_unlock(&fsn_mark->lock); | |
306 | ||
307 | if (!(oldmask & ~mask)) | |
308 | fsnotify_destroy_mark(fsn_mark); | |
309 | ||
310 | return mask & oldmask; | |
311 | } | |
312 | ||
88826276 | 313 | static int fanotify_remove_mark(struct fsnotify_group *group, struct inode *inode, |
088b09b0 | 314 | struct vfsmount *mnt, __u32 mask) |
88826276 EP |
315 | { |
316 | struct fsnotify_mark *fsn_mark = NULL; | |
088b09b0 | 317 | __u32 removed; |
88826276 EP |
318 | |
319 | BUG_ON(inode && mnt); | |
320 | BUG_ON(!inode && !mnt); | |
321 | ||
322 | if (inode) | |
323 | fsn_mark = fsnotify_find_inode_mark(group, inode); | |
324 | else if (mnt) | |
325 | fsn_mark = fsnotify_find_vfsmount_mark(group, mnt); | |
2a3edf86 | 326 | else |
88826276 | 327 | BUG(); |
2a3edf86 | 328 | |
88826276 EP |
329 | if (!fsn_mark) |
330 | return -ENOENT; | |
331 | ||
088b09b0 | 332 | removed = fanotify_mark_remove_from_mask(fsn_mark, mask); |
5444e298 | 333 | /* matches the fsnotify_find_inode_mark() */ |
2a3edf86 EP |
334 | fsnotify_put_mark(fsn_mark); |
335 | ||
088b09b0 AG |
336 | if (removed & group->mask) |
337 | fsnotify_recalc_group_mask(group); | |
338 | if (inode) { | |
339 | if (removed & inode->i_fsnotify_mask) | |
340 | fsnotify_recalc_inode_mask(inode); | |
341 | } else if (mnt) { | |
342 | if (removed & mnt->mnt_fsnotify_mask) | |
343 | fsnotify_recalc_vfsmount_mask(mnt); | |
344 | } | |
345 | ||
2a3edf86 EP |
346 | return 0; |
347 | } | |
348 | ||
912ee394 AG |
349 | static __u32 fanotify_mark_add_to_mask(struct fsnotify_mark *fsn_mark, __u32 mask) |
350 | { | |
351 | __u32 oldmask; | |
352 | ||
353 | spin_lock(&fsn_mark->lock); | |
354 | oldmask = fsn_mark->mask; | |
355 | fsn_mark->mask = oldmask | mask; | |
356 | spin_unlock(&fsn_mark->lock); | |
357 | ||
358 | return mask & ~oldmask; | |
359 | } | |
360 | ||
52202dfb AG |
361 | static int fanotify_add_vfsmount_mark(struct fsnotify_group *group, |
362 | struct vfsmount *mnt, __u32 mask) | |
2a3edf86 EP |
363 | { |
364 | struct fsnotify_mark *fsn_mark; | |
912ee394 | 365 | __u32 added; |
2a3edf86 | 366 | |
88826276 EP |
367 | fsn_mark = fsnotify_find_vfsmount_mark(group, mnt); |
368 | if (!fsn_mark) { | |
88826276 EP |
369 | int ret; |
370 | ||
912ee394 AG |
371 | fsn_mark = kmem_cache_alloc(fanotify_mark_cache, GFP_KERNEL); |
372 | if (!fsn_mark) | |
52202dfb | 373 | return -ENOMEM; |
88826276 | 374 | |
912ee394 AG |
375 | fsnotify_init_mark(fsn_mark, fanotify_free_mark); |
376 | ret = fsnotify_add_mark(fsn_mark, group, NULL, mnt, 0); | |
88826276 | 377 | if (ret) { |
912ee394 | 378 | fanotify_free_mark(fsn_mark); |
52202dfb | 379 | return ret; |
88826276 | 380 | } |
88826276 | 381 | } |
912ee394 | 382 | added = fanotify_mark_add_to_mask(fsn_mark, mask); |
52202dfb | 383 | fsnotify_put_mark(fsn_mark); |
912ee394 AG |
384 | if (added) { |
385 | if (added & ~group->mask) | |
386 | fsnotify_recalc_group_mask(group); | |
387 | if (added & ~mnt->mnt_fsnotify_mask) | |
388 | fsnotify_recalc_vfsmount_mask(mnt); | |
389 | } | |
52202dfb | 390 | return 0; |
88826276 EP |
391 | } |
392 | ||
52202dfb AG |
393 | static int fanotify_add_inode_mark(struct fsnotify_group *group, |
394 | struct inode *inode, __u32 mask) | |
88826276 EP |
395 | { |
396 | struct fsnotify_mark *fsn_mark; | |
912ee394 | 397 | __u32 added; |
88826276 EP |
398 | |
399 | pr_debug("%s: group=%p inode=%p\n", __func__, group, inode); | |
2a3edf86 | 400 | |
5444e298 | 401 | fsn_mark = fsnotify_find_inode_mark(group, inode); |
2a3edf86 | 402 | if (!fsn_mark) { |
88826276 | 403 | int ret; |
2a3edf86 | 404 | |
912ee394 AG |
405 | fsn_mark = kmem_cache_alloc(fanotify_mark_cache, GFP_KERNEL); |
406 | if (!fsn_mark) | |
52202dfb | 407 | return -ENOMEM; |
2a3edf86 | 408 | |
912ee394 AG |
409 | fsnotify_init_mark(fsn_mark, fanotify_free_mark); |
410 | ret = fsnotify_add_mark(fsn_mark, group, inode, NULL, 0); | |
2a3edf86 | 411 | if (ret) { |
912ee394 | 412 | fanotify_free_mark(fsn_mark); |
52202dfb | 413 | return ret; |
2a3edf86 | 414 | } |
2a3edf86 | 415 | } |
912ee394 | 416 | added = fanotify_mark_add_to_mask(fsn_mark, mask); |
52202dfb | 417 | fsnotify_put_mark(fsn_mark); |
912ee394 AG |
418 | if (added) { |
419 | if (added & ~group->mask) | |
420 | fsnotify_recalc_group_mask(group); | |
421 | if (added & ~inode->i_fsnotify_mask) | |
422 | fsnotify_recalc_inode_mask(inode); | |
423 | } | |
52202dfb | 424 | return 0; |
88826276 | 425 | } |
2a3edf86 | 426 | |
2a3edf86 EP |
427 | static bool fanotify_mark_validate_input(int flags, |
428 | __u32 mask) | |
429 | { | |
430 | pr_debug("%s: flags=%x mask=%x\n", __func__, flags, mask); | |
431 | ||
432 | /* are flags valid of this operation? */ | |
433 | if (!fanotify_mark_flags_valid(flags)) | |
434 | return false; | |
435 | /* is the mask valid? */ | |
436 | if (!fanotify_mask_valid(mask)) | |
437 | return false; | |
438 | return true; | |
439 | } | |
440 | ||
52c923dd | 441 | /* fanotify syscalls */ |
11637e4b EP |
442 | SYSCALL_DEFINE3(fanotify_init, unsigned int, flags, unsigned int, event_f_flags, |
443 | unsigned int, priority) | |
444 | { | |
52c923dd EP |
445 | struct fsnotify_group *group; |
446 | int f_flags, fd; | |
447 | ||
448 | pr_debug("%s: flags=%d event_f_flags=%d priority=%d\n", | |
449 | __func__, flags, event_f_flags, priority); | |
450 | ||
451 | if (event_f_flags) | |
452 | return -EINVAL; | |
453 | if (priority) | |
454 | return -EINVAL; | |
455 | ||
456 | if (!capable(CAP_SYS_ADMIN)) | |
457 | return -EACCES; | |
458 | ||
459 | if (flags & ~FAN_ALL_INIT_FLAGS) | |
460 | return -EINVAL; | |
461 | ||
462 | f_flags = (O_RDONLY | FMODE_NONOTIFY); | |
463 | if (flags & FAN_CLOEXEC) | |
464 | f_flags |= O_CLOEXEC; | |
465 | if (flags & FAN_NONBLOCK) | |
466 | f_flags |= O_NONBLOCK; | |
467 | ||
468 | /* fsnotify_alloc_group takes a ref. Dropped in fanotify_release */ | |
469 | group = fsnotify_alloc_group(&fanotify_fsnotify_ops); | |
470 | if (IS_ERR(group)) | |
471 | return PTR_ERR(group); | |
472 | ||
473 | fd = anon_inode_getfd("[fanotify]", &fanotify_fops, group, f_flags); | |
474 | if (fd < 0) | |
475 | goto out_put_group; | |
476 | ||
477 | return fd; | |
478 | ||
479 | out_put_group: | |
480 | fsnotify_put_group(group); | |
481 | return fd; | |
11637e4b | 482 | } |
bbaa4168 | 483 | |
9bbfc964 HC |
484 | SYSCALL_DEFINE(fanotify_mark)(int fanotify_fd, unsigned int flags, |
485 | __u64 mask, int dfd, | |
486 | const char __user * pathname) | |
bbaa4168 | 487 | { |
2a3edf86 EP |
488 | struct inode *inode; |
489 | struct fsnotify_group *group; | |
490 | struct file *filp; | |
491 | struct path path; | |
492 | int ret, fput_needed; | |
493 | ||
494 | pr_debug("%s: fanotify_fd=%d flags=%x dfd=%d pathname=%p mask=%llx\n", | |
495 | __func__, fanotify_fd, flags, dfd, pathname, mask); | |
496 | ||
497 | /* we only use the lower 32 bits as of right now. */ | |
498 | if (mask & ((__u64)0xffffffff << 32)) | |
499 | return -EINVAL; | |
500 | ||
501 | if (!fanotify_mark_validate_input(flags, mask)) | |
502 | return -EINVAL; | |
503 | ||
504 | filp = fget_light(fanotify_fd, &fput_needed); | |
505 | if (unlikely(!filp)) | |
506 | return -EBADF; | |
507 | ||
508 | /* verify that this is indeed an fanotify instance */ | |
509 | ret = -EINVAL; | |
510 | if (unlikely(filp->f_op != &fanotify_fops)) | |
511 | goto fput_and_out; | |
512 | ||
513 | ret = fanotify_find_path(dfd, pathname, &path, flags); | |
514 | if (ret) | |
515 | goto fput_and_out; | |
516 | ||
517 | /* inode held in place by reference to path; group by fget on fd */ | |
518 | inode = path.dentry->d_inode; | |
519 | group = filp->private_data; | |
520 | ||
521 | /* create/update an inode mark */ | |
c6223f46 AG |
522 | switch (flags & (FAN_MARK_ADD | FAN_MARK_REMOVE)) { |
523 | case FAN_MARK_ADD: | |
90dd201d | 524 | ret = fanotify_add_inode_mark(group, inode, mask); |
c6223f46 AG |
525 | break; |
526 | case FAN_MARK_REMOVE: | |
088b09b0 | 527 | ret = fanotify_remove_mark(group, inode, NULL, mask); |
c6223f46 AG |
528 | break; |
529 | default: | |
530 | ret = -EINVAL; | |
531 | } | |
2a3edf86 EP |
532 | |
533 | path_put(&path); | |
534 | fput_and_out: | |
535 | fput_light(filp, fput_needed); | |
536 | return ret; | |
537 | } | |
538 | ||
9bbfc964 HC |
539 | #ifdef CONFIG_HAVE_SYSCALL_WRAPPERS |
540 | asmlinkage long SyS_fanotify_mark(long fanotify_fd, long flags, __u64 mask, | |
541 | long dfd, long pathname) | |
542 | { | |
543 | return SYSC_fanotify_mark((int) fanotify_fd, (unsigned int) flags, | |
544 | mask, (int) dfd, | |
545 | (const char __user *) pathname); | |
546 | } | |
547 | SYSCALL_ALIAS(sys_fanotify_mark, SyS_fanotify_mark); | |
548 | #endif | |
549 | ||
2a3edf86 EP |
550 | /* |
551 | * fanotify_user_setup - Our initialization function. Note that we cannnot return | |
552 | * error because we have compiled-in VFS hooks. So an (unlikely) failure here | |
553 | * must result in panic(). | |
554 | */ | |
555 | static int __init fanotify_user_setup(void) | |
556 | { | |
557 | fanotify_mark_cache = KMEM_CACHE(fsnotify_mark, SLAB_PANIC); | |
558 | ||
559 | return 0; | |
bbaa4168 | 560 | } |
2a3edf86 | 561 | device_initcall(fanotify_user_setup); |