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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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