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1 /* | |
2 * Copyright (c) 2013 The Native Client Authors. All rights reserved. | |
3 * Use of this source code is governed by a BSD-style license that can be | |
4 * found in the LICENSE file. | |
5 */ | |
6 | |
7 #ifndef NATIVE_CLIENT_SRC_PUBLIC_NACL_FILE_INFO_H_ | |
8 #define NATIVE_CLIENT_SRC_PUBLIC_NACL_FILE_INFO_H_ | |
9 | |
10 #include "native_client/src/include/nacl_base.h" | |
11 #include "native_client/src/include/portability.h" | |
12 | |
13 EXTERN_C_BEGIN | |
14 | |
15 struct NaClDesc; | |
16 | |
17 /* | |
18 * NaClFileToken is a single-use nonce that the NaCl process can use to query | |
19 * the browser process for trusted information about a file. This helps | |
20 * establish that the file is known by the browser to be immutable and | |
21 * suitable for file-identity-based validation caching. | |
22 * lo == 0 && hi == 0 indicates the token is invalid and no additional | |
23 * information is available (see NaClFileTokenIsValid()). | |
24 */ | |
25 struct NaClFileToken { | |
26 uint64_t lo; | |
27 uint64_t hi; | |
28 }; | |
29 | |
30 static INLINE int NaClFileTokenIsValid(struct NaClFileToken *file_token) { | |
31 return !(file_token->lo == 0 && file_token->hi == 0); | |
32 } | |
33 | |
34 struct NaClFileInfo { | |
35 /* desc is either a Unix file descriptor or a Windows file handle. */ | |
36 int32_t desc; | |
jvoung (off chromium)
2014/05/16 18:02:05
btw, Nick do you remember what the original intent
Mark Seaborn
2014/05/16 18:23:29
If this field contains a Windows handle, I think i
jvoung (off chromium)
2014/05/16 20:58:43
Okay, on further inspection, it looks like all the
| |
37 struct NaClFileToken file_token; | |
38 }; | |
39 | |
40 /* | |
41 * Creates a NaClDesc from the file descriptor/file handle and metadata | |
42 * in |info|, and associates that desc with the metadata. | |
43 */ | |
44 struct NaClDesc *NaClDescIoFromFileInfo(struct NaClFileInfo info, | |
45 int mode); | |
46 | |
47 | |
48 EXTERN_C_END | |
49 | |
50 #endif /* NATIVE_CLIENT_SRC_PUBLIC_NACL_FILE_INFO_H_ */ | |
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