hybris/egl/platforms/common/native_handle.c

   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 <android/cutils/native_handle.h>
  26
  27 native_handle_t* native_handle_create(int numFds, int numInts)
  28 {
  29     native_handle_t* h = malloc(
  30             sizeof(native_handle_t) + sizeof(int)*(numFds+numInts));
  31
  32     h->version = sizeof(native_handle_t);
  33     h->numFds = numFds;
  34     h->numInts = numInts;
  35     return h;
  36 }
  37
  38 int native_handle_delete(native_handle_t* h)
  39 {
  40     if (h) {
  41         if (h->version != sizeof(native_handle_t))
  42             return -EINVAL;
  43         free(h);
  44     }
  45     return 0;
  46 }
  47
  48 int native_handle_close(const native_handle_t* h)
  49 {
  50     if (h->version != sizeof(native_handle_t))
  51         return -EINVAL;
  52
  53     const int numFds = h->numFds;
  54     int i;
  55     for (i=0 ; i<numFds ; i++) {
  56         close(h->data[i]);
  57     }
  58     return 0;
  59 }