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gerrit-public.fairphone.software / kernel / msm-4.9 / ca9c726eea013394d1e846331b117effb21ead83 / . / fs / notify / fsnotify.h
blob: 204353c0f663957899d275e290aca242f0c0563d [file] [log] [blame]
Eric Paris90586522009-05-21 17:01:20 -0400[diff] [blame]1#ifndef __FS_NOTIFY_FSNOTIFY_H_
2#define __FS_NOTIFY_FSNOTIFY_H_
3
4#include <linux/list.h>
5#include <linux/fsnotify.h>
6#include <linux/srcu.h>
7#include <linux/types.h>
8
9/* protects reads of fsnotify_groups */
10extern struct srcu_struct fsnotify_grp_srcu;
Eric Paris19c2a0e2009-12-17 21:24:23 -0500[diff] [blame]11/* all groups which receive inode fsnotify events */
12extern struct list_head fsnotify_inode_groups;
Eric Paris71314852009-12-17 21:24:23 -0500[diff] [blame]13/* all groups which receive vfsmount fsnotify events */
14extern struct list_head fsnotify_vfsmount_groups;
Eric Paris19c2a0e2009-12-17 21:24:23 -0500[diff] [blame]15/* all bitwise OR of all event types (FS_*) for all fsnotify_inode_groups */
16extern __u32 fsnotify_inode_mask;
Eric Paris71314852009-12-17 21:24:23 -0500[diff] [blame]17/* all bitwise OR of all event types (FS_*) for all fsnotify_vfsmount_groups */
18extern __u32 fsnotify_vfsmount_mask;
Eric Paris3be25f42009-05-21 17:01:26 -0400[diff] [blame]19
Eric Parisa2d8bc62009-05-21 17:01:37 -0400[diff] [blame]20/* destroy all events sitting in this groups notification queue */
21extern void fsnotify_flush_notify(struct fsnotify_group *group);
22
Eric Paris5444e292009-12-17 21:24:27 -0500[diff] [blame]23/* add a mark to an inode */
24extern int fsnotify_add_inode_mark(struct fsnotify_mark *mark,
25 struct fsnotify_group *group, struct inode *inode,
26 int allow_dups);
Eric Paris0d48b7f2009-12-17 21:24:27 -0500[diff] [blame]27/* add a mark to a vfsmount */
28extern int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark,
29 struct fsnotify_group *group, struct vfsmount *mnt,
30 int allow_dups);
Eric Paris5444e292009-12-17 21:24:27 -0500[diff] [blame]31
Eric Paris4ca76352009-12-17 21:24:23 -0500[diff] [blame]32/* add a group to the inode group list */
33extern void fsnotify_add_inode_group(struct fsnotify_group *group);
Eric Paris71314852009-12-17 21:24:23 -0500[diff] [blame]34/* add a group to the vfsmount group list */
35extern void fsnotify_add_vfsmount_group(struct fsnotify_group *group);
Eric Paris3be25f42009-05-21 17:01:26 -0400[diff] [blame]36/* final kfree of a group */
37extern void fsnotify_final_destroy_group(struct fsnotify_group *group);
Eric Parisa2d8bc62009-05-21 17:01:37 -0400[diff] [blame]38
Eric Paris0d48b7f2009-12-17 21:24:27 -0500[diff] [blame]39/* vfsmount specific destruction of a mark */
40extern void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark);
Eric Paris5444e292009-12-17 21:24:27 -0500[diff] [blame]41/* inode specific destruction of a mark */
42extern void fsnotify_destroy_inode_mark(struct fsnotify_mark *mark);
Eric Paris3be25f42009-05-21 17:01:26 -0400[diff] [blame]43/* run the list of all marks associated with inode and flag them to be freed */
44extern void fsnotify_clear_marks_by_inode(struct inode *inode);
Andreas Gruenbacherca9c7262009-12-17 21:24:27 -0500[diff] [blame^]45/* run the list of all marks associated with vfsmount and flag them to be freed */
46extern void fsnotify_clear_marks_by_mount(struct vfsmount *mnt);
Eric Parisc28f7e52009-05-21 17:01:29 -0400[diff] [blame]47/*
48 * update the dentry->d_flags of all of inode's children to indicate if inode cares
49 * about events that happen to its children.
50 */
51extern void __fsnotify_update_child_dentry_flags(struct inode *inode);
Eric Parisa2d8bc62009-05-21 17:01:37 -0400[diff] [blame]52
53/* allocate and destroy and event holder to attach events to notification/access queues */
54extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void);
55extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder);
56
Eric Paris90586522009-05-21 17:01:20 -0400[diff] [blame]57#endif /* __FS_NOTIFY_FSNOTIFY_H_ */