69bc40f9a9
Instead of maintaining local copy of all appIds and sandboxIds, StorageManagerService will just get required packages info from PackageManagerService when an user starts and passes it to vold. Bug: 117988901 Test: manual Change-Id: Idab274529e843784c8804929e920c3af63032690
202 lines
7.8 KiB
C++
202 lines
7.8 KiB
C++
/*
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* Copyright (C) 2008 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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#ifndef ANDROID_VOLD_VOLUME_MANAGER_H
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#define ANDROID_VOLD_VOLUME_MANAGER_H
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#include <fnmatch.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <list>
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#include <mutex>
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#include <string>
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#include <unordered_map>
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#include <unordered_set>
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#include <android-base/unique_fd.h>
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#include <cutils/multiuser.h>
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#include <sysutils/NetlinkEvent.h>
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#include <utils/List.h>
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#include <utils/Timers.h>
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#include "android/os/IVoldListener.h"
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#include "model/Disk.h"
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#include "model/VolumeBase.h"
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#define DEBUG_APPFUSE 0
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class VolumeManager {
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private:
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static VolumeManager* sInstance;
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bool mDebug;
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public:
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virtual ~VolumeManager();
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// TODO: pipe all requests through VM to avoid exposing this lock
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std::mutex& getLock() { return mLock; }
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std::mutex& getCryptLock() { return mCryptLock; }
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void setListener(android::sp<android::os::IVoldListener> listener) { mListener = listener; }
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android::sp<android::os::IVoldListener> getListener() { return mListener; }
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int start();
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int stop();
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void handleBlockEvent(NetlinkEvent* evt);
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class DiskSource {
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public:
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DiskSource(const std::string& sysPattern, const std::string& nickname, int flags)
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: mSysPattern(sysPattern), mNickname(nickname), mFlags(flags) {}
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bool matches(const std::string& sysPath) {
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return !fnmatch(mSysPattern.c_str(), sysPath.c_str(), 0);
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}
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const std::string& getNickname() { return mNickname; }
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int getFlags() { return mFlags; }
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private:
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std::string mSysPattern;
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std::string mNickname;
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int mFlags;
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};
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void addDiskSource(const std::shared_ptr<DiskSource>& diskSource);
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std::shared_ptr<android::vold::Disk> findDisk(const std::string& id);
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std::shared_ptr<android::vold::VolumeBase> findVolume(const std::string& id);
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void listVolumes(android::vold::VolumeBase::Type type, std::list<std::string>& list);
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int forgetPartition(const std::string& partGuid, const std::string& fsUuid);
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int onUserAdded(userid_t userId, int userSerialNumber);
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int onUserRemoved(userid_t userId);
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int onUserStarted(userid_t userId, const std::vector<std::string>& packageNames,
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const std::vector<int>& appIds, const std::vector<std::string>& sandboxIds);
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int onUserStopped(userid_t userId);
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int addAppIds(const std::vector<std::string>& packageNames, const std::vector<int32_t>& appIds);
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int addSandboxIds(const std::vector<int32_t>& appIds,
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const std::vector<std::string>& sandboxIds);
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int prepareSandboxForApp(const std::string& packageName, appid_t appId,
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const std::string& sandboxId, userid_t userId);
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int destroySandboxForApp(const std::string& packageName, const std::string& sandboxId,
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userid_t userId);
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int onVolumeMounted(android::vold::VolumeBase* vol);
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int onVolumeUnmounted(android::vold::VolumeBase* vol);
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int onSecureKeyguardStateChanged(bool isShowing);
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int setPrimary(const std::shared_ptr<android::vold::VolumeBase>& vol);
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int remountUid(uid_t uid, const std::string& mode);
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/* Reset all internal state, typically during framework boot */
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int reset();
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/* Prepare for device shutdown, safely unmounting all devices */
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int shutdown();
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/* Unmount all volumes, usually for encryption */
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int unmountAll();
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int updateVirtualDisk();
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int setDebug(bool enable);
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static VolumeManager* Instance();
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/*
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* Ensure that all directories along given path exist, creating parent
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* directories as needed. Validates that given path is absolute and that
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* it contains no relative "." or ".." paths or symlinks. Last path segment
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* is treated as filename and ignored, unless the path ends with "/". Also
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* ensures that path belongs to a volume managed by vold.
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*/
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int mkdirs(const std::string& path);
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int createObb(const std::string& path, const std::string& key, int32_t ownerGid,
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std::string* outVolId);
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int destroyObb(const std::string& volId);
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int mountAppFuse(uid_t uid, pid_t pid, int mountId, android::base::unique_fd* device_fd);
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int unmountAppFuse(uid_t uid, pid_t pid, int mountId);
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private:
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VolumeManager();
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void readInitialState();
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int linkPrimary(userid_t userId);
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int prepareSandboxes(userid_t userId, const std::vector<std::string>& packageNames,
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const std::vector<std::string>& visibleVolLabels);
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int mountPkgSpecificDirsForRunningProcs(userid_t userId,
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const std::vector<std::string>& packageNames,
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const std::vector<std::string>& visibleVolLabels);
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int destroySandboxesForVol(android::vold::VolumeBase* vol, userid_t userId);
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std::string prepareSandboxSource(uid_t uid, const std::string& sandboxId,
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const std::string& sandboxRootDir);
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std::string prepareSandboxTarget(const std::string& packageName, uid_t uid,
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const std::string& volumeLabel,
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const std::string& mntTargetRootDir, bool isUserDependent);
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std::string preparePkgDataSource(const std::string& packageName, uid_t uid,
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const std::string& dataRootDir);
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std::string prepareSubDirs(const std::string& pathPrefix, const std::string& subDirs,
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mode_t mode, uid_t uid, gid_t gid);
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bool createPkgSpecificDirRoots(const std::string& volumeRoot);
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bool createPkgSpecificDirs(const std::string& packageName, uid_t uid,
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const std::string& volumeRoot, const std::string& sandboxDirRoot);
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int mountPkgSpecificDir(const std::string& mntSourceRoot, const std::string& mntTargetRoot,
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const std::string& packageName, const char* dirName);
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int destroySandboxForAppOnVol(const std::string& packageName, const std::string& sandboxId,
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userid_t userId, const std::string& volLabel);
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void handleDiskAdded(const std::shared_ptr<android::vold::Disk>& disk);
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void handleDiskChanged(dev_t device);
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void handleDiskRemoved(dev_t device);
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std::mutex mLock;
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std::mutex mCryptLock;
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android::sp<android::os::IVoldListener> mListener;
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std::list<std::shared_ptr<DiskSource>> mDiskSources;
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std::list<std::shared_ptr<android::vold::Disk>> mDisks;
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std::list<std::shared_ptr<android::vold::Disk>> mPendingDisks;
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std::list<std::shared_ptr<android::vold::VolumeBase>> mObbVolumes;
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std::unordered_map<userid_t, int> mAddedUsers;
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std::unordered_set<userid_t> mStartedUsers;
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std::string mVirtualDiskPath;
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std::shared_ptr<android::vold::Disk> mVirtualDisk;
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std::shared_ptr<android::vold::VolumeBase> mInternalEmulated;
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std::shared_ptr<android::vold::VolumeBase> mPrimary;
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std::unordered_map<std::string, appid_t> mAppIds;
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std::unordered_map<appid_t, std::string> mSandboxIds;
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std::unordered_map<userid_t, std::vector<std::string>> mUserPackages;
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std::unordered_set<std::string> mVisibleVolumeIds;
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int mNextObbId;
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bool mSecureKeyguardShowing;
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};
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#endif
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