128 lines
2.9 KiB
C++
128 lines
2.9 KiB
C++
/*
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* Copyright Samsung Electronics Co.,LTD.
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <cstring>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <log/log.h>
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#include "acrylic_internal.h"
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#include "acrylic_device.h"
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AcrylicDevice::AcrylicDevice(const char *devpath)
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: mDevPath(devpath), mDevFD(-1)
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{
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}
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AcrylicDevice::~AcrylicDevice()
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{
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if (mDevFD >= 0)
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::close(mDevFD);
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}
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bool AcrylicDevice::open()
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{
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if (mDevFD >= 0)
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return true;
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mDevFD = ::open(mDevPath.c_str(), O_RDWR);
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if (mDevFD < 0) {
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ALOGERR("Failed to open %s", mDevPath.c_str());
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return false;
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}
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ALOGD_TEST("Opened %s on fd %d", mDevPath.c_str(), mDevFD);
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return true;
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}
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int AcrylicDevice::ioctl(int cmd, void *arg)
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{
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if (!open())
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return -1;
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return ::ioctl(mDevFD, cmd, arg);
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}
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AcrylicRedundantDevice::AcrylicRedundantDevice(const char *devpath)
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: mDevPath(devpath), mDevFd{-1, -1, -1}, mFdIdx(0)
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{
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mDevPath = devpath;
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}
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AcrylicRedundantDevice::~AcrylicRedundantDevice()
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{
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for (int i = 0; i < MAX_DEVICE_FD; i++)
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::close(mDevFd[i]);
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}
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bool AcrylicRedundantDevice::open()
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{
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if (mDevFd[0] >= 0)
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return true;
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for (int i = 0; i < MAX_DEVICE_FD; i++) {
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if (mDevFd[i] < 0) {
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mDevFd[i] = ::open(mDevPath.c_str(), O_RDWR);
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if (mDevFd[i] < 0) {
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ALOGERR("Failed to open %s for devfd[%d]", mDevPath.c_str(), i);
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while (i-- > 0) {
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::close(mDevFd[i]);
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mDevFd[i] = -1;
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}
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return false;
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}
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ALOGD_TEST("Opened %s on devfd[%d] %d", mDevPath.c_str(), i, mDevFd[i]);
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}
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}
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return true;
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}
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int AcrylicRedundantDevice::ioctl_unique(int cmd, void *arg)
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{
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if (!open())
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return -1;
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return ::ioctl(mDevFd[0], cmd, arg);
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}
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int AcrylicRedundantDevice::ioctl_current(int cmd, void *arg)
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{
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if (!open())
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return -1;
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return ::ioctl(mDevFd[mFdIdx], cmd, arg);
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}
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int AcrylicRedundantDevice::ioctl_broadcast(int cmd, void *arg) {
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if (!open())
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return -1;
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for (int i = 0; i < MAX_DEVICE_FD; i++) {
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int ret = ::ioctl(mDevFd[i], cmd, arg);
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if (ret < 0)
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return ret;
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}
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return 0;
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}
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