| /* |
| * Copyright Samsung Electronics Co.,LTD. |
| * 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 <cstring> |
| |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <sys/ioctl.h> |
| |
| #include <log/log.h> |
| |
| #include "acrylic_internal.h" |
| #include "acrylic_device.h" |
| |
| AcrylicDevice::AcrylicDevice(const char *devpath) |
| : mDevPath(devpath), mDevFD(-1) |
| { |
| } |
| |
| AcrylicDevice::~AcrylicDevice() |
| { |
| if (mDevFD >= 0) |
| ::close(mDevFD); |
| } |
| |
| bool AcrylicDevice::open() |
| { |
| if (mDevFD >= 0) |
| return true; |
| |
| mDevFD = ::open(mDevPath.c_str(), O_RDWR); |
| if (mDevFD < 0) { |
| ALOGERR("Failed to open %s", mDevPath.c_str()); |
| return false; |
| } |
| |
| ALOGD_TEST("Opened %s on fd %d", mDevPath.c_str(), mDevFD); |
| |
| return true; |
| } |
| |
| int AcrylicDevice::ioctl(int cmd, void *arg) |
| { |
| if (!open()) |
| return -1; |
| |
| return ::ioctl(mDevFD, cmd, arg); |
| } |
| |
| AcrylicRedundantDevice::AcrylicRedundantDevice(const char *devpath) |
| : mDevPath(devpath), mDevFd{-1, -1, -1}, mFdIdx(0) |
| { |
| mDevPath = devpath; |
| } |
| |
| AcrylicRedundantDevice::~AcrylicRedundantDevice() |
| { |
| for (int i = 0; i < MAX_DEVICE_FD; i++) |
| ::close(mDevFd[i]); |
| } |
| |
| bool AcrylicRedundantDevice::open() |
| { |
| if (mDevFd[0] >= 0) |
| return true; |
| |
| for (int i = 0; i < MAX_DEVICE_FD; i++) { |
| if (mDevFd[i] < 0) { |
| mDevFd[i] = ::open(mDevPath.c_str(), O_RDWR); |
| if (mDevFd[i] < 0) { |
| ALOGERR("Failed to open %s for devfd[%d]", mDevPath.c_str(), i); |
| while (i-- > 0) { |
| ::close(mDevFd[i]); |
| mDevFd[i] = -1; |
| } |
| return false; |
| } |
| |
| ALOGD_TEST("Opened %s on devfd[%d] %d", mDevPath.c_str(), i, mDevFd[i]); |
| } |
| } |
| |
| return true; |
| } |
| |
| int AcrylicRedundantDevice::ioctl_unique(int cmd, void *arg) |
| { |
| if (!open()) |
| return -1; |
| |
| return ::ioctl(mDevFd[0], cmd, arg); |
| } |
| |
| int AcrylicRedundantDevice::ioctl_current(int cmd, void *arg) |
| { |
| if (!open()) |
| return -1; |
| |
| return ::ioctl(mDevFd[mFdIdx], cmd, arg); |
| } |
| |
| int AcrylicRedundantDevice::ioctl_broadcast(int cmd, void *arg) { |
| if (!open()) |
| return -1; |
| |
| for (int i = 0; i < MAX_DEVICE_FD; i++) { |
| int ret = ::ioctl(mDevFd[i], cmd, arg); |
| if (ret < 0) |
| return ret; |
| } |
| |
| return 0; |
| } |