| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include <dlfcn.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #define LOG_TAG "ese-sh" |
| #include <ese/ese.h> |
| #include <ese/log.h> |
| |
| #include "hw.h" |
| |
| void print_supported_hardware(const struct SupportedHardware *supported) { |
| printf("Supported hardware:\n"); |
| for (size_t i = 0; i < supported->len; ++i) { |
| printf("\t%s\t(%s / %s)\n", supported->hw[i].name, supported->hw[i].sym, |
| supported->hw[i].lib); |
| } |
| } |
| |
| int find_supported_hardware(const struct SupportedHardware *supported, |
| const char *name) { |
| for (size_t i = 0; i < supported->len; ++i) { |
| if (!strcmp(name, supported->hw[i].name)) { |
| return (int)i; |
| } |
| } |
| return -1; |
| } |
| |
| /* This should be C++. */ |
| void release_hardware(const struct Hardware *hw) { |
| void *hw_handle = dlopen(hw->lib, RTLD_NOW); |
| /* Close for the above open and the original. */ |
| dlclose(hw_handle); |
| dlclose(hw_handle); |
| } |
| |
| bool initialize_hardware(struct EseInterface *ese, const struct Hardware *hw) { |
| void *hw_handle = dlopen(hw->lib, RTLD_NOW); |
| if (!hw_handle) { |
| fprintf(stderr, "Failed to open hardware implementation: %s\n", dlerror()); |
| return false; |
| } |
| const struct EseOperations **hw_ops = dlsym(hw_handle, hw->sym); |
| if (!hw_ops) { |
| fprintf(stderr, "Failed to find hardware implementation: %s\n", dlerror()); |
| return false; |
| } |
| /* N.b., ese_init appends _ops to the second argument. */ |
| ese_init(ese, *hw); |
| return true; |
| } |