1 /* 2 * Copyright (C) 2014 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 #include <errno.h> 17 #include <string.h> 18 19 #include <hardware/hardware.h> 20 #include <hardware/keymaster0.h> 21 22 #include "trusty_keymaster_device.h" 23 24 using keymaster::TrustyKeymasterDevice; 25 26 /* 27 * Generic device handling 28 */ 29 static int trusty_keymaster_open(const hw_module_t* module, const char* name, hw_device_t** device) { 30 if (strcmp(name, KEYSTORE_KEYMASTER) != 0) { 31 return -EINVAL; 32 } 33 34 TrustyKeymasterDevice* dev = new TrustyKeymasterDevice(module); 35 if (dev == NULL) { 36 return -ENOMEM; 37 } 38 *device = dev->hw_device(); 39 // Do not delete dev; it will get cleaned up when the caller calls device->close(), and must 40 // exist until then. 41 return 0; 42 } 43 44 static struct hw_module_methods_t keystore_module_methods = { 45 .open = trusty_keymaster_open, 46 }; 47 48 struct keystore_module HAL_MODULE_INFO_SYM __attribute__((visibility("default"))) = { 49 .common = 50 { 51 .tag = HARDWARE_MODULE_TAG, 52 .module_api_version = KEYMASTER_MODULE_API_VERSION_2_0, 53 .hal_api_version = HARDWARE_HAL_API_VERSION, 54 .id = KEYSTORE_HARDWARE_MODULE_ID, 55 .name = "Trusty Keymaster HAL", 56 .author = "The Android Open Source Project", 57 .methods = &keystore_module_methods, 58 .dso = 0, 59 .reserved = {}, 60 }, 61 }; 62
