5d7c35ce20
The android-4.14-stable and later kernels support the FS_IOC_ADD_ENCRYPTION_KEY and FS_IOC_REMOVE_ENCRYPTION_KEY ioctls. This has superseded the old way of adding fscrypt keys to the kernel, which was to use the add_key() syscall to add keys to the "session" keyring. On kernels that support the ioctls, Android doesn't use the obsolete way. Since upgrading even just to Android 14 requires at minimum a android-4.14-stable kernel (according to https://source.android.com/docs/core/architecture/kernel/android-common#compatibility-matrix), there is no need to support the obsolete way anymore. Therefore, this commit removes the code from init that created a keyring named "fscrypt" in the session keyring. It also removes the code that created the session keyring itself, since the only reason that Android even created a session keyring was just to hold the "fscrypt" keyring. Flag: N/A for the following reasons: - Removing obsolete code, which is fairly safe - Very early code, so runtime flag cannot be used - Even a build-time flag cannot be used, since init needs recovery_available, which aconfig libraries do not support Bug: 311736104 Test: Build and boot Cuttlefish Change-Id: Id9a184c68cf16d5c4b1d889444cf637c95a91413
29 lines
890 B
C++
29 lines
890 B
C++
/*
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* Copyright (C) 2016 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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#pragma once
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#include <string>
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enum class FscryptAction {
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kNone,
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kAttempt,
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kRequire,
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kDeleteIfNecessary,
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};
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bool FscryptSetDirectoryPolicy(const std::string& ref_basename, FscryptAction action,
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const std::string& dir);
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