source: Plugins/dynamicResources/inotify.h @ 31

Revision 31, 3.6 KB checked in by art, 13 years ago (diff)

dynamicResourceManagment Plugin added.

TODO: change file association list of resources. This is required
by the drm plugin to be able to reload the resource as soon as one of
the associated file changes.

Line 
1/*
2 * Inode based directory notification for Linux
3 *
4 * Copyright (C) 2005 John McCutchan
5 */
6
7#ifndef _LINUX_INOTIFY_H
8#define _LINUX_INOTIFY_H
9
10#include <linux/types.h>
11
12/*
13 * struct inotify_event - structure read from the inotify device for each event
14 *
15 * When you are watching a directory, you will receive the filename for events
16 * such as IN_CREATE, IN_DELETE, IN_OPEN, IN_CLOSE, ..., relative to the wd.
17 */
18struct inotify_event {
19        __s32           wd;             /* watch descriptor */
20        __u32           mask;           /* watch mask */
21        __u32           cookie;         /* cookie to synchronize two events */
22        __u32           len;            /* length (including nulls) of name */
23        char            name[0];        /* stub for possible name */
24};
25
26/* the following are legal, implemented events that user-space can watch for */
27#define IN_ACCESS               0x00000001      /* File was accessed */
28#define IN_MODIFY               0x00000002      /* File was modified */
29#define IN_ATTRIB               0x00000004      /* Metadata changed */
30#define IN_CLOSE_WRITE          0x00000008      /* Writtable file was closed */
31#define IN_CLOSE_NOWRITE        0x00000010      /* Unwrittable file closed */
32#define IN_OPEN                 0x00000020      /* File was opened */
33#define IN_MOVED_FROM           0x00000040      /* File was moved from X */
34#define IN_MOVED_TO             0x00000080      /* File was moved to Y */
35#define IN_CREATE               0x00000100      /* Subfile was created */
36#define IN_DELETE               0x00000200      /* Subfile was deleted */
37#define IN_DELETE_SELF          0x00000400      /* Self was deleted */
38#define IN_MOVE_SELF            0x00000800      /* Self was moved */
39
40/* the following are legal events.  they are sent as needed to any watch */
41#define IN_UNMOUNT              0x00002000      /* Backing fs was unmounted */
42#define IN_Q_OVERFLOW           0x00004000      /* Event queued overflowed */
43#define IN_IGNORED              0x00008000      /* File was ignored */
44
45/* helper events */
46#define IN_CLOSE                (IN_CLOSE_WRITE | IN_CLOSE_NOWRITE) /* close */
47#define IN_MOVE                 (IN_MOVED_FROM | IN_MOVED_TO) /* moves */
48
49/* special flags */
50#define IN_ONLYDIR              0x01000000      /* only watch the path if it is a directory */
51#define IN_DONT_FOLLOW          0x02000000      /* don't follow a sym link */
52#define IN_MASK_ADD             0x20000000      /* add to the mask of an already existing watch */
53#define IN_ISDIR                0x40000000      /* event occurred against dir */
54#define IN_ONESHOT              0x80000000      /* only send event once */
55
56/*
57 * All of the events - we build the list by hand so that we can add flags in
58 * the future and not break backward compatibility.  Apps will get only the
59 * events that they originally wanted.  Be sure to add new events here!
60 */
61#define IN_ALL_EVENTS   (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \
62                         IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | \
63                         IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF | \
64                         IN_MOVE_SELF)
65
66#ifdef __KERNEL__
67
68#include <linux/dcache.h>
69#include <linux/fs.h>
70#include <linux/config.h>
71
72#ifdef CONFIG_INOTIFY
73
74extern void inotify_inode_queue_event(struct inode *, __u32, __u32,
75                                      const char *);
76extern void inotify_dentry_parent_queue_event(struct dentry *, __u32, __u32,
77                                              const char *);
78extern void inotify_unmount_inodes(struct list_head *);
79extern void inotify_inode_is_dead(struct inode *);
80extern u32 inotify_get_cookie(void);
81
82#else
83
84static inline void inotify_inode_queue_event(struct inode *inode,
85                                             __u32 mask, __u32 cookie,
86                                             const char *filename)
87{
88}
89
90static inline void inotify_dentry_parent_queue_event(struct dentry *dentry,
91                                                     __u32 mask, __u32 cookie,
92                                                     const char *filename)
93{
94}
95
96static inline void inotify_unmount_inodes(struct list_head *list)
97{
98}
99
100static inline void inotify_inode_is_dead(struct inode *inode)
101{
102}
103
104static inline u32 inotify_get_cookie(void)
105{
106        return 0;
107}
108
109#endif  /* CONFIG_INOTIFY */
110
111#endif  /* __KERNEL __ */
112
113#endif  /* _LINUX_INOTIFY_H */
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