[PATCH] inotify
inotify is intended to correct the deficiencies of dnotify, particularly
its inability to scale and its terrible user interface:
* dnotify requires the opening of one fd per each directory
that you intend to watch. This quickly results in too many
open files and pins removable media, preventing unmount.
* dnotify is directory-based. You only learn about changes to
directories. Sure, a change to a file in a directory affects
the directory, but you are then forced to keep a cache of
stat structures.
* dnotify's interface to user-space is awful. Signals?
inotify provides a more usable, simple, powerful solution to file change
notification:
* inotify's interface is a system call that returns a fd, not SIGIO.
You get a single fd, which is select()-able.
* inotify has an event that says "the filesystem that the item
you were watching is on was unmounted."
* inotify can watch directories or files.
Inotify is currently used by Beagle (a desktop search infrastructure),
Gamin (a FAM replacement), and other projects.
See Documentation/filesystems/inotify.txt.
Signed-off-by: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12 17:06:03 -04:00
|
|
|
/*
|
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|
* Inode based directory notification for Linux
|
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|
|
*
|
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|
* Copyright (C) 2005 John McCutchan
|
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|
*/
|
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|
#ifndef _LINUX_INOTIFY_H
|
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|
#define _LINUX_INOTIFY_H
|
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|
|
|
2008-07-24 00:29:41 -04:00
|
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|
/* For O_CLOEXEC and O_NONBLOCK */
|
2008-07-24 00:29:32 -04:00
|
|
|
#include <linux/fcntl.h>
|
[PATCH] inotify
inotify is intended to correct the deficiencies of dnotify, particularly
its inability to scale and its terrible user interface:
* dnotify requires the opening of one fd per each directory
that you intend to watch. This quickly results in too many
open files and pins removable media, preventing unmount.
* dnotify is directory-based. You only learn about changes to
directories. Sure, a change to a file in a directory affects
the directory, but you are then forced to keep a cache of
stat structures.
* dnotify's interface to user-space is awful. Signals?
inotify provides a more usable, simple, powerful solution to file change
notification:
* inotify's interface is a system call that returns a fd, not SIGIO.
You get a single fd, which is select()-able.
* inotify has an event that says "the filesystem that the item
you were watching is on was unmounted."
* inotify can watch directories or files.
Inotify is currently used by Beagle (a desktop search infrastructure),
Gamin (a FAM replacement), and other projects.
See Documentation/filesystems/inotify.txt.
Signed-off-by: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12 17:06:03 -04:00
|
|
|
#include <linux/types.h>
|
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|
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/*
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|
* struct inotify_event - structure read from the inotify device for each event
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*
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* When you are watching a directory, you will receive the filename for events
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* such as IN_CREATE, IN_DELETE, IN_OPEN, IN_CLOSE, ..., relative to the wd.
|
|
|
|
*/
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|
struct inotify_event {
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|
__s32 wd; /* watch descriptor */
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|
__u32 mask; /* watch mask */
|
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__u32 cookie; /* cookie to synchronize two events */
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|
__u32 len; /* length (including nulls) of name */
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|
char name[0]; /* stub for possible name */
|
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|
|
};
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/* the following are legal, implemented events that user-space can watch for */
|
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|
#define IN_ACCESS 0x00000001 /* File was accessed */
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|
|
#define IN_MODIFY 0x00000002 /* File was modified */
|
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|
#define IN_ATTRIB 0x00000004 /* Metadata changed */
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|
#define IN_CLOSE_WRITE 0x00000008 /* Writtable file was closed */
|
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#define IN_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */
|
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#define IN_OPEN 0x00000020 /* File was opened */
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#define IN_MOVED_FROM 0x00000040 /* File was moved from X */
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#define IN_MOVED_TO 0x00000080 /* File was moved to Y */
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#define IN_CREATE 0x00000100 /* Subfile was created */
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#define IN_DELETE 0x00000200 /* Subfile was deleted */
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#define IN_DELETE_SELF 0x00000400 /* Self was deleted */
|
2005-08-15 12:13:28 -04:00
|
|
|
#define IN_MOVE_SELF 0x00000800 /* Self was moved */
|
[PATCH] inotify
inotify is intended to correct the deficiencies of dnotify, particularly
its inability to scale and its terrible user interface:
* dnotify requires the opening of one fd per each directory
that you intend to watch. This quickly results in too many
open files and pins removable media, preventing unmount.
* dnotify is directory-based. You only learn about changes to
directories. Sure, a change to a file in a directory affects
the directory, but you are then forced to keep a cache of
stat structures.
* dnotify's interface to user-space is awful. Signals?
inotify provides a more usable, simple, powerful solution to file change
notification:
* inotify's interface is a system call that returns a fd, not SIGIO.
You get a single fd, which is select()-able.
* inotify has an event that says "the filesystem that the item
you were watching is on was unmounted."
* inotify can watch directories or files.
Inotify is currently used by Beagle (a desktop search infrastructure),
Gamin (a FAM replacement), and other projects.
See Documentation/filesystems/inotify.txt.
Signed-off-by: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12 17:06:03 -04:00
|
|
|
|
|
|
|
/* the following are legal events. they are sent as needed to any watch */
|
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|
#define IN_UNMOUNT 0x00002000 /* Backing fs was unmounted */
|
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|
#define IN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */
|
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#define IN_IGNORED 0x00008000 /* File was ignored */
|
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/* helper events */
|
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#define IN_CLOSE (IN_CLOSE_WRITE | IN_CLOSE_NOWRITE) /* close */
|
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#define IN_MOVE (IN_MOVED_FROM | IN_MOVED_TO) /* moves */
|
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|
/* special flags */
|
2005-12-12 03:37:14 -05:00
|
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|
#define IN_ONLYDIR 0x01000000 /* only watch the path if it is a directory */
|
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#define IN_DONT_FOLLOW 0x02000000 /* don't follow a sym link */
|
2005-09-06 18:18:02 -04:00
|
|
|
#define IN_MASK_ADD 0x20000000 /* add to the mask of an already existing watch */
|
[PATCH] inotify
inotify is intended to correct the deficiencies of dnotify, particularly
its inability to scale and its terrible user interface:
* dnotify requires the opening of one fd per each directory
that you intend to watch. This quickly results in too many
open files and pins removable media, preventing unmount.
* dnotify is directory-based. You only learn about changes to
directories. Sure, a change to a file in a directory affects
the directory, but you are then forced to keep a cache of
stat structures.
* dnotify's interface to user-space is awful. Signals?
inotify provides a more usable, simple, powerful solution to file change
notification:
* inotify's interface is a system call that returns a fd, not SIGIO.
You get a single fd, which is select()-able.
* inotify has an event that says "the filesystem that the item
you were watching is on was unmounted."
* inotify can watch directories or files.
Inotify is currently used by Beagle (a desktop search infrastructure),
Gamin (a FAM replacement), and other projects.
See Documentation/filesystems/inotify.txt.
Signed-off-by: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12 17:06:03 -04:00
|
|
|
#define IN_ISDIR 0x40000000 /* event occurred against dir */
|
|
|
|
#define IN_ONESHOT 0x80000000 /* only send event once */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* All of the events - we build the list by hand so that we can add flags in
|
|
|
|
* the future and not break backward compatibility. Apps will get only the
|
|
|
|
* events that they originally wanted. Be sure to add new events here!
|
|
|
|
*/
|
|
|
|
#define IN_ALL_EVENTS (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \
|
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|
IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | \
|
2005-08-15 12:13:28 -04:00
|
|
|
IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF | \
|
|
|
|
IN_MOVE_SELF)
|
[PATCH] inotify
inotify is intended to correct the deficiencies of dnotify, particularly
its inability to scale and its terrible user interface:
* dnotify requires the opening of one fd per each directory
that you intend to watch. This quickly results in too many
open files and pins removable media, preventing unmount.
* dnotify is directory-based. You only learn about changes to
directories. Sure, a change to a file in a directory affects
the directory, but you are then forced to keep a cache of
stat structures.
* dnotify's interface to user-space is awful. Signals?
inotify provides a more usable, simple, powerful solution to file change
notification:
* inotify's interface is a system call that returns a fd, not SIGIO.
You get a single fd, which is select()-able.
* inotify has an event that says "the filesystem that the item
you were watching is on was unmounted."
* inotify can watch directories or files.
Inotify is currently used by Beagle (a desktop search infrastructure),
Gamin (a FAM replacement), and other projects.
See Documentation/filesystems/inotify.txt.
Signed-off-by: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12 17:06:03 -04:00
|
|
|
|
2008-07-24 00:29:32 -04:00
|
|
|
/* Flags for sys_inotify_init1. */
|
|
|
|
#define IN_CLOEXEC O_CLOEXEC
|
2008-07-24 00:29:41 -04:00
|
|
|
#define IN_NONBLOCK O_NONBLOCK
|
2008-07-24 00:29:32 -04:00
|
|
|
|
[PATCH] inotify
inotify is intended to correct the deficiencies of dnotify, particularly
its inability to scale and its terrible user interface:
* dnotify requires the opening of one fd per each directory
that you intend to watch. This quickly results in too many
open files and pins removable media, preventing unmount.
* dnotify is directory-based. You only learn about changes to
directories. Sure, a change to a file in a directory affects
the directory, but you are then forced to keep a cache of
stat structures.
* dnotify's interface to user-space is awful. Signals?
inotify provides a more usable, simple, powerful solution to file change
notification:
* inotify's interface is a system call that returns a fd, not SIGIO.
You get a single fd, which is select()-able.
* inotify has an event that says "the filesystem that the item
you were watching is on was unmounted."
* inotify can watch directories or files.
Inotify is currently used by Beagle (a desktop search infrastructure),
Gamin (a FAM replacement), and other projects.
See Documentation/filesystems/inotify.txt.
Signed-off-by: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12 17:06:03 -04:00
|
|
|
#ifdef __KERNEL__
|
|
|
|
|
|
|
|
#include <linux/dcache.h>
|
|
|
|
#include <linux/fs.h>
|
|
|
|
|
2006-06-01 16:10:59 -04:00
|
|
|
/*
|
|
|
|
* struct inotify_watch - represents a watch request on a specific inode
|
|
|
|
*
|
|
|
|
* h_list is protected by ih->mutex of the associated inotify_handle.
|
|
|
|
* i_list, mask are protected by inode->inotify_mutex of the associated inode.
|
|
|
|
* ih, inode, and wd are never written to once the watch is created.
|
|
|
|
*
|
|
|
|
* Callers must use the established inotify interfaces to access inotify_watch
|
|
|
|
* contents. The content of this structure is private to the inotify
|
|
|
|
* implementation.
|
|
|
|
*/
|
|
|
|
struct inotify_watch {
|
|
|
|
struct list_head h_list; /* entry in inotify_handle's list */
|
|
|
|
struct list_head i_list; /* entry in inode's list */
|
|
|
|
atomic_t count; /* reference count */
|
|
|
|
struct inotify_handle *ih; /* associated inotify handle */
|
|
|
|
struct inode *inode; /* associated inode */
|
|
|
|
__s32 wd; /* watch descriptor */
|
|
|
|
__u32 mask; /* event mask for this watch */
|
|
|
|
};
|
|
|
|
|
|
|
|
struct inotify_operations {
|
|
|
|
void (*handle_event)(struct inotify_watch *, u32, u32, u32,
|
2006-06-01 16:11:01 -04:00
|
|
|
const char *, struct inode *);
|
2006-06-01 16:10:59 -04:00
|
|
|
void (*destroy_watch)(struct inotify_watch *);
|
|
|
|
};
|
|
|
|
|
[PATCH] inotify
inotify is intended to correct the deficiencies of dnotify, particularly
its inability to scale and its terrible user interface:
* dnotify requires the opening of one fd per each directory
that you intend to watch. This quickly results in too many
open files and pins removable media, preventing unmount.
* dnotify is directory-based. You only learn about changes to
directories. Sure, a change to a file in a directory affects
the directory, but you are then forced to keep a cache of
stat structures.
* dnotify's interface to user-space is awful. Signals?
inotify provides a more usable, simple, powerful solution to file change
notification:
* inotify's interface is a system call that returns a fd, not SIGIO.
You get a single fd, which is select()-able.
* inotify has an event that says "the filesystem that the item
you were watching is on was unmounted."
* inotify can watch directories or files.
Inotify is currently used by Beagle (a desktop search infrastructure),
Gamin (a FAM replacement), and other projects.
See Documentation/filesystems/inotify.txt.
Signed-off-by: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12 17:06:03 -04:00
|
|
|
#ifdef CONFIG_INOTIFY
|
|
|
|
|
2006-06-01 16:10:59 -04:00
|
|
|
/* Kernel API for producing events */
|
|
|
|
|
2006-03-25 06:07:09 -05:00
|
|
|
extern void inotify_d_instantiate(struct dentry *, struct inode *);
|
|
|
|
extern void inotify_d_move(struct dentry *);
|
[PATCH] inotify
inotify is intended to correct the deficiencies of dnotify, particularly
its inability to scale and its terrible user interface:
* dnotify requires the opening of one fd per each directory
that you intend to watch. This quickly results in too many
open files and pins removable media, preventing unmount.
* dnotify is directory-based. You only learn about changes to
directories. Sure, a change to a file in a directory affects
the directory, but you are then forced to keep a cache of
stat structures.
* dnotify's interface to user-space is awful. Signals?
inotify provides a more usable, simple, powerful solution to file change
notification:
* inotify's interface is a system call that returns a fd, not SIGIO.
You get a single fd, which is select()-able.
* inotify has an event that says "the filesystem that the item
you were watching is on was unmounted."
* inotify can watch directories or files.
Inotify is currently used by Beagle (a desktop search infrastructure),
Gamin (a FAM replacement), and other projects.
See Documentation/filesystems/inotify.txt.
Signed-off-by: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12 17:06:03 -04:00
|
|
|
extern void inotify_inode_queue_event(struct inode *, __u32, __u32,
|
2006-06-01 16:11:01 -04:00
|
|
|
const char *, struct inode *);
|
[PATCH] inotify
inotify is intended to correct the deficiencies of dnotify, particularly
its inability to scale and its terrible user interface:
* dnotify requires the opening of one fd per each directory
that you intend to watch. This quickly results in too many
open files and pins removable media, preventing unmount.
* dnotify is directory-based. You only learn about changes to
directories. Sure, a change to a file in a directory affects
the directory, but you are then forced to keep a cache of
stat structures.
* dnotify's interface to user-space is awful. Signals?
inotify provides a more usable, simple, powerful solution to file change
notification:
* inotify's interface is a system call that returns a fd, not SIGIO.
You get a single fd, which is select()-able.
* inotify has an event that says "the filesystem that the item
you were watching is on was unmounted."
* inotify can watch directories or files.
Inotify is currently used by Beagle (a desktop search infrastructure),
Gamin (a FAM replacement), and other projects.
See Documentation/filesystems/inotify.txt.
Signed-off-by: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12 17:06:03 -04:00
|
|
|
extern void inotify_dentry_parent_queue_event(struct dentry *, __u32, __u32,
|
|
|
|
const char *);
|
|
|
|
extern void inotify_unmount_inodes(struct list_head *);
|
|
|
|
extern void inotify_inode_is_dead(struct inode *);
|
|
|
|
extern u32 inotify_get_cookie(void);
|
|
|
|
|
2006-06-01 16:10:59 -04:00
|
|
|
/* Kernel Consumer API */
|
|
|
|
|
|
|
|
extern struct inotify_handle *inotify_init(const struct inotify_operations *);
|
2006-06-01 16:11:03 -04:00
|
|
|
extern void inotify_init_watch(struct inotify_watch *);
|
2006-06-01 16:10:59 -04:00
|
|
|
extern void inotify_destroy(struct inotify_handle *);
|
2006-06-01 16:11:03 -04:00
|
|
|
extern __s32 inotify_find_watch(struct inotify_handle *, struct inode *,
|
|
|
|
struct inotify_watch **);
|
2006-06-01 16:10:59 -04:00
|
|
|
extern __s32 inotify_find_update_watch(struct inotify_handle *, struct inode *,
|
|
|
|
u32);
|
|
|
|
extern __s32 inotify_add_watch(struct inotify_handle *, struct inotify_watch *,
|
|
|
|
struct inode *, __u32);
|
2007-06-07 12:21:44 -04:00
|
|
|
extern __s32 inotify_clone_watch(struct inotify_watch *, struct inotify_watch *);
|
2007-06-07 12:22:59 -04:00
|
|
|
extern void inotify_evict_watch(struct inotify_watch *);
|
2006-06-01 16:11:03 -04:00
|
|
|
extern int inotify_rm_watch(struct inotify_handle *, struct inotify_watch *);
|
2006-06-01 16:10:59 -04:00
|
|
|
extern int inotify_rm_wd(struct inotify_handle *, __u32);
|
2006-06-01 16:11:05 -04:00
|
|
|
extern void inotify_remove_watch_locked(struct inotify_handle *,
|
|
|
|
struct inotify_watch *);
|
2006-06-01 16:10:59 -04:00
|
|
|
extern void get_inotify_watch(struct inotify_watch *);
|
|
|
|
extern void put_inotify_watch(struct inotify_watch *);
|
|
|
|
|
[PATCH] inotify
inotify is intended to correct the deficiencies of dnotify, particularly
its inability to scale and its terrible user interface:
* dnotify requires the opening of one fd per each directory
that you intend to watch. This quickly results in too many
open files and pins removable media, preventing unmount.
* dnotify is directory-based. You only learn about changes to
directories. Sure, a change to a file in a directory affects
the directory, but you are then forced to keep a cache of
stat structures.
* dnotify's interface to user-space is awful. Signals?
inotify provides a more usable, simple, powerful solution to file change
notification:
* inotify's interface is a system call that returns a fd, not SIGIO.
You get a single fd, which is select()-able.
* inotify has an event that says "the filesystem that the item
you were watching is on was unmounted."
* inotify can watch directories or files.
Inotify is currently used by Beagle (a desktop search infrastructure),
Gamin (a FAM replacement), and other projects.
See Documentation/filesystems/inotify.txt.
Signed-off-by: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12 17:06:03 -04:00
|
|
|
#else
|
|
|
|
|
2006-03-25 06:07:09 -05:00
|
|
|
static inline void inotify_d_instantiate(struct dentry *dentry,
|
|
|
|
struct inode *inode)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void inotify_d_move(struct dentry *dentry)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
[PATCH] inotify
inotify is intended to correct the deficiencies of dnotify, particularly
its inability to scale and its terrible user interface:
* dnotify requires the opening of one fd per each directory
that you intend to watch. This quickly results in too many
open files and pins removable media, preventing unmount.
* dnotify is directory-based. You only learn about changes to
directories. Sure, a change to a file in a directory affects
the directory, but you are then forced to keep a cache of
stat structures.
* dnotify's interface to user-space is awful. Signals?
inotify provides a more usable, simple, powerful solution to file change
notification:
* inotify's interface is a system call that returns a fd, not SIGIO.
You get a single fd, which is select()-able.
* inotify has an event that says "the filesystem that the item
you were watching is on was unmounted."
* inotify can watch directories or files.
Inotify is currently used by Beagle (a desktop search infrastructure),
Gamin (a FAM replacement), and other projects.
See Documentation/filesystems/inotify.txt.
Signed-off-by: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12 17:06:03 -04:00
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|
|
static inline void inotify_inode_queue_event(struct inode *inode,
|
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|
|
__u32 mask, __u32 cookie,
|
2006-06-01 16:11:01 -04:00
|
|
|
const char *filename,
|
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|
|
struct inode *n_inode)
|
[PATCH] inotify
inotify is intended to correct the deficiencies of dnotify, particularly
its inability to scale and its terrible user interface:
* dnotify requires the opening of one fd per each directory
that you intend to watch. This quickly results in too many
open files and pins removable media, preventing unmount.
* dnotify is directory-based. You only learn about changes to
directories. Sure, a change to a file in a directory affects
the directory, but you are then forced to keep a cache of
stat structures.
* dnotify's interface to user-space is awful. Signals?
inotify provides a more usable, simple, powerful solution to file change
notification:
* inotify's interface is a system call that returns a fd, not SIGIO.
You get a single fd, which is select()-able.
* inotify has an event that says "the filesystem that the item
you were watching is on was unmounted."
* inotify can watch directories or files.
Inotify is currently used by Beagle (a desktop search infrastructure),
Gamin (a FAM replacement), and other projects.
See Documentation/filesystems/inotify.txt.
Signed-off-by: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12 17:06:03 -04:00
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void inotify_dentry_parent_queue_event(struct dentry *dentry,
|
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|
|
__u32 mask, __u32 cookie,
|
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|
|
const char *filename)
|
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|
|
{
|
|
|
|
}
|
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static inline void inotify_unmount_inodes(struct list_head *list)
|
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|
|
{
|
|
|
|
}
|
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|
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|
|
static inline void inotify_inode_is_dead(struct inode *inode)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline u32 inotify_get_cookie(void)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
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|
2006-06-01 16:10:59 -04:00
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static inline struct inotify_handle *inotify_init(const struct inotify_operations *ops)
|
|
|
|
{
|
|
|
|
return ERR_PTR(-EOPNOTSUPP);
|
|
|
|
}
|
|
|
|
|
2006-06-01 16:11:03 -04:00
|
|
|
static inline void inotify_init_watch(struct inotify_watch *watch)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
2006-06-01 16:10:59 -04:00
|
|
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static inline void inotify_destroy(struct inotify_handle *ih)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
2006-06-01 16:11:03 -04:00
|
|
|
static inline __s32 inotify_find_watch(struct inotify_handle *ih, struct inode *inode,
|
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|
|
struct inotify_watch **watchp)
|
|
|
|
{
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
}
|
|
|
|
|
2006-06-01 16:10:59 -04:00
|
|
|
static inline __s32 inotify_find_update_watch(struct inotify_handle *ih,
|
|
|
|
struct inode *inode, u32 mask)
|
|
|
|
{
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline __s32 inotify_add_watch(struct inotify_handle *ih,
|
|
|
|
struct inotify_watch *watch,
|
|
|
|
struct inode *inode, __u32 mask)
|
|
|
|
{
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
}
|
|
|
|
|
2006-06-01 16:11:03 -04:00
|
|
|
static inline int inotify_rm_watch(struct inotify_handle *ih,
|
|
|
|
struct inotify_watch *watch)
|
|
|
|
{
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
}
|
|
|
|
|
2006-06-01 16:10:59 -04:00
|
|
|
static inline int inotify_rm_wd(struct inotify_handle *ih, __u32 wd)
|
|
|
|
{
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
}
|
|
|
|
|
2006-06-01 16:11:05 -04:00
|
|
|
static inline void inotify_remove_watch_locked(struct inotify_handle *ih,
|
|
|
|
struct inotify_watch *watch)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
2006-06-01 16:10:59 -04:00
|
|
|
static inline void get_inotify_watch(struct inotify_watch *watch)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void put_inotify_watch(struct inotify_watch *watch)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
[PATCH] inotify
inotify is intended to correct the deficiencies of dnotify, particularly
its inability to scale and its terrible user interface:
* dnotify requires the opening of one fd per each directory
that you intend to watch. This quickly results in too many
open files and pins removable media, preventing unmount.
* dnotify is directory-based. You only learn about changes to
directories. Sure, a change to a file in a directory affects
the directory, but you are then forced to keep a cache of
stat structures.
* dnotify's interface to user-space is awful. Signals?
inotify provides a more usable, simple, powerful solution to file change
notification:
* inotify's interface is a system call that returns a fd, not SIGIO.
You get a single fd, which is select()-able.
* inotify has an event that says "the filesystem that the item
you were watching is on was unmounted."
* inotify can watch directories or files.
Inotify is currently used by Beagle (a desktop search infrastructure),
Gamin (a FAM replacement), and other projects.
See Documentation/filesystems/inotify.txt.
Signed-off-by: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12 17:06:03 -04:00
|
|
|
#endif /* CONFIG_INOTIFY */
|
|
|
|
|
|
|
|
#endif /* __KERNEL __ */
|
|
|
|
|
|
|
|
#endif /* _LINUX_INOTIFY_H */
|