Files
hardware_interfaces/keymaster/4.0/support/Keymaster4.cpp
Shawn Willden 7d339812c9 Move Keymaster wrapper into support library.
This wrapper was used to manage KM3/KM4 compatibility in keystore.
It's also needed in vold, so this CL moves it here, to make it usable
for vold.

Test: keystore CTS tests
Change-Id: I8079b8577f7d4a8fd67f47fbe1f48861e4a0734b
2018-01-18 15:39:50 -07:00

49 lines
1.4 KiB
C++

/*
**
** Copyright 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 <keymasterV4_0/Keymaster4.h>
#include <android-base/logging.h>
namespace android {
namespace hardware {
namespace keymaster {
namespace V4_0 {
namespace support {
void Keymaster4::getVersionIfNeeded() {
if (haveVersion_) return;
auto rc = dev_->getHardwareInfo([&](SecurityLevel securityLevel, auto...) {
securityLevel_ = securityLevel;
haveVersion_ = true;
});
CHECK(rc.isOk()) << "Got error " << rc.description() << " trying to get hardware info";
}
Keymaster::VersionResult Keymaster4::halVersion() {
getVersionIfNeeded();
return {ErrorCode::OK, halMajorVersion(), securityLevel_, true};
}
} // namespace support
} // namespace V4_0
} // namespace keymaster
} // namespace hardware
} // namespace android