blob: a4cee8c47f66edbeb66b939e5549a635b9f98889 (
plain)
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
|
/* Copyright (c) 2010 The Chromium Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef PPAPI_C_DEV_PPB_FILE_IO_TRUSTED_DEV_H_
#define PPAPI_C_DEV_PPB_FILE_IO_TRUSTED_DEV_H_
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/pp_stdint.h"
struct PP_CompletionCallback;
#define PPB_FILEIOTRUSTED_DEV_INTERFACE "PPB_FileIOTrusted(Dev);0.2"
// Available only to trusted implementations.
struct PPB_FileIOTrusted_Dev {
// Returns a file descriptor corresponding to the given FileIO object. On
// Windows, returns a HANDLE; on all other platforms, returns a POSIX file
// descriptor. The FileIO object must have been opened with a successful
// call to FileIO::Open. The file descriptor will be closed automatically
// when the FileIO object is closed or destroyed.
int32_t (*GetOSFileDescriptor)(PP_Resource file_io);
// Notifies the browser that underlying file will be modified. This gives
// the browser the opportunity to apply quota restrictions and possibly
// return an error to indicate that the write is not allowed.
int32_t (*WillWrite)(PP_Resource file_io,
int64_t offset,
int32_t bytes_to_write,
struct PP_CompletionCallback callback);
// Notifies the browser that underlying file will be modified. This gives
// the browser the opportunity to apply quota restrictions and possibly
// return an error to indicate that the write is not allowed.
int32_t (*WillSetLength)(PP_Resource file_io,
int64_t length,
struct PP_CompletionCallback callback);
// TODO(darin): Maybe unify the above into a single WillChangeFileSize
// method? The above methods have the advantage of mapping to PPB_FileIO
// Write and SetLength calls. WillChangeFileSize would require the caller to
// compute the file size resulting from a Write call, which may be
// undesirable.
};
#endif /* PPAPI_C_DEV_PPB_FILE_IO_TRUSTED_DEV_H_ */
|
