1 /* 2 * Copyright (C) 2007 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 #define LOG_TAG "NativeHandle" 18 19 #include <stdint.h> 20 #include <errno.h> 21 #include <string.h> 22 #include <stdlib.h> 23 #include <unistd.h> 24 25 #include <cutils/log.h> 26 #include <cutils/native_handle.h> 27 28 native_handle_t* native_handle_create(int numFds, int numInts) 29 { 30 native_handle_t* h = malloc( 31 sizeof(native_handle_t) + sizeof(int)*(numFds+numInts)); 32 33 if (h) { 34 h->version = sizeof(native_handle_t); 35 h->numFds = numFds; 36 h->numInts = numInts; 37 } 38 return h; 39 } 40 41 int native_handle_delete(native_handle_t* h) 42 { 43 if (h) { 44 if (h->version != sizeof(native_handle_t)) 45 return -EINVAL; 46 free(h); 47 } 48 return 0; 49 } 50 51 int native_handle_close(const native_handle_t* h) 52 { 53 if (h->version != sizeof(native_handle_t)) 54 return -EINVAL; 55 56 const int numFds = h->numFds; 57 int i; 58 for (i=0 ; i<numFds ; i++) { 59 close(h->data[i]); 60 } 61 return 0; 62 } 63
