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/*
* 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;
}
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