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1 /* | |
2 * Copyright (C) 2009 The Android Open Source Project | |
3 * | |
4 * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 * you may not use this file except in compliance with the License. | |
6 * You may obtain a copy of the License at | |
7 * | |
8 * http://www.apache.org/licenses/LICENSE-2.0 | |
9 * | |
10 * Unless required by applicable law or agreed to in writing, software | |
11 * distributed under the License is distributed on an "AS IS" BASIS, | |
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 * See the License for the specific language governing permissions and | |
14 * limitations under the License. | |
15 */ | |
16 | |
17 #ifndef NATIVE_HANDLE_H_ | |
18 #define NATIVE_HANDLE_H_ | |
19 | |
20 #ifdef __cplusplus | |
21 extern "C" { | |
22 #endif | |
23 | |
24 typedef struct native_handle | |
25 { | |
26 int version; /* sizeof(native_handle_t) */ | |
27 int numFds; /* number of file-descriptors at &data[0] */ | |
28 int numInts; /* number of ints at &data[numFds] */ | |
29 int data[0]; /* numFds + numInts ints */ | |
30 } native_handle_t; | |
31 | |
32 /* | |
33 * native_handle_close | |
34 * | |
35 * closes the file descriptors contained in this native_handle_t | |
36 * | |
37 * return 0 on success, or a negative error code on failure | |
38 * | |
39 */ | |
40 int native_handle_close(const native_handle_t* h); | |
41 | |
42 | |
43 /* | |
44 * native_handle_create | |
45 * | |
46 * creates a native_handle_t and initializes it. must be destroyed with | |
47 * native_handle_delete(). | |
48 * | |
49 */ | |
50 native_handle_t* native_handle_create(int numFds, int numInts); | |
51 | |
52 /* | |
53 * native_handle_delete | |
54 * | |
55 * frees a native_handle_t allocated with native_handle_create(). | |
56 * This ONLY frees the memory allocated for the native_handle_t, but doesn't | |
57 * close the file descriptors; which can be achieved with native_handle_close(). | |
58 * | |
59 * return 0 on success, or a negative error code on failure | |
60 * | |
61 */ | |
62 int native_handle_delete(native_handle_t* h); | |
63 | |
64 | |
65 #ifdef __cplusplus | |
66 } | |
67 #endif | |
68 | |
69 #endif /* NATIVE_HANDLE_H_ */ | |
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