1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
#ifndef __G_VFS_BACKEND_H__
#define __G_VFS_BACKEND_H__
#include <gvfs/gvfstypes.h>
#include <gvfsdaemon.h>
#include <gvfsjob.h>
G_BEGIN_DECLS
#define G_TYPE_VFS_BACKEND (g_vfs_backend_get_type ())
#define G_VFS_BACKEND(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_VFS_BACKEND, GVfsBackend))
#define G_VFS_BACKEND_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_VFS_BACKEND, GVfsBackendClass))
#define G_IS_VFS_BACKEND(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_VFS_BACKEND))
#define G_IS_VFS_BACKEND_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_VFS_BACKEND))
#define G_VFS_BACKEND_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_VFS_BACKEND, GVfsBackendClass))
/* GVfsBackend defined in gvfsdaemon.h to fix circular defines */
typedef struct _GVfsBackendClass GVfsBackendClass;
typedef gpointer GVfsHandle;
struct _GVfsBackend
{
GObject parent_instance;
};
struct _GVfsBackendClass
{
GObjectClass parent_class;
/* vtable */
/* These should all be fast and non-blocking, scheduling the i/o
* operations async (or on a thread).
* Returning FALSE means "Can't do this right now, try later"
* Returning TRUE means you started the job and will set the
* result (or error) on the opernation object when done.
* A NULL here means operation not supported
*/
gboolean (*open_for_read) (GVfsBackend *backend,
GVfsJobOpenForRead *job,
char *filename);
gboolean (*close_read) (GVfsBackend *backend,
GVfsJobCloseRead *job,
GVfsHandle *handle);
gboolean (*read) (GVfsBackend *backend,
GVfsJobRead *job,
GVfsHandle *handle,
char *buffer,
gsize bytes_requested);
gboolean (*seek_on_read) (GVfsBackend *backend,
GVfsJobSeekRead *job,
GVfsHandle *handle,
goffset offset,
GSeekType type);
};
GType g_vfs_backend_get_type (void) G_GNUC_CONST;
gboolean g_vfs_backend_open_for_read (GVfsBackend *backend,
GVfsJobOpenForRead *job,
char *filename);
gboolean g_vfs_backend_close_read (GVfsBackend *backend,
GVfsJobCloseRead *job,
GVfsHandle *handle);
gboolean g_vfs_backend_read (GVfsBackend *backend,
GVfsJobRead *job,
GVfsHandle *handle,
char *buffer,
gsize bytes_requested);
gboolean g_vfs_backend_seek_on_read (GVfsBackend *backend,
GVfsJobSeekRead *job,
GVfsHandle *handle,
goffset offset,
GSeekType type);
G_END_DECLS
#endif /* __G_VFS_BACKEND_H__ */
|
