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Commit 8388ba3e authored by Yifan Hong's avatar Yifan Hong
Browse files

Lshal: support commands. 

Support the following commands:
  lshal list
  lshal list -itrpc
  lshal help
  lshal help list
  lshal list -h
  lshal list --help

Test: run these commands
Bug: 37725279
Change-Id: I970fbc8d250d43f57e92f783229e0645d7e8df4e
Merged-In: I970fbc8d250d43f57e92f783229e0645d7e8df4e
parent f2d9a89e

cmds/lshal/Android.bp

+3 −1
Original line number Diff line number Diff line
@@ -26,6 +26,8 @@ cc_binary { 
    ],

    srcs: [

        "Lshal.cpp",

        "PipeRelay.cpp"

        "ListCommand.cpp",

        "PipeRelay.cpp",

        "utils.cpp",

    ],

}

cmds/lshal/ListCommand.cpp

0 → 100644
+710 −0

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cmds/lshal/ListCommand.h

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+101 −0
Original line number Diff line number Diff line 
/*

 * 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.

 */



#ifndef FRAMEWORK_NATIVE_CMDS_LSHAL_LIST_COMMAND_H_

#define FRAMEWORK_NATIVE_CMDS_LSHAL_LIST_COMMAND_H_



#include <stdint.h>



#include <fstream>

#include <string>

#include <vector>



#include <android-base/macros.h>

#include <android/hidl/manager/1.0/IServiceManager.h>



#include "NullableOStream.h"

#include "TableEntry.h"

#include "utils.h"



namespace android {

namespace lshal {



class Lshal;



class ListCommand {

public:

    ListCommand(Lshal &lshal);

    Status main(const std::string &command, const Arg &arg);

private:

    Status parseArgs(const std::string &command, const Arg &arg);

    Status fetch();

    void postprocess();

    void dump();

    void putEntry(TableEntrySource source, TableEntry &&entry);

    Status fetchPassthrough(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager);

    Status fetchBinderized(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager);

    Status fetchAllLibraries(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager);

    bool getReferencedPids(

        pid_t serverPid, std::map<uint64_t, Pids> *objects) const;

    void dumpTable();

    void dumpVintf() const;

    void printLine(

            const std::string &interfaceName,

            const std::string &transport,

            const std::string &arch,

            const std::string &server,

            const std::string &serverCmdline,

            const std::string &address, const std::string &clients,

            const std::string &clientCmdlines) const ;

    // Return /proc/{pid}/cmdline if it exists, else empty string.

    const std::string &getCmdline(pid_t pid);

    // Call getCmdline on all pid in pids. If it returns empty string, the process might

    // have died, and the pid is removed from pids.

    void removeDeadProcesses(Pids *pids);

    void forEachTable(const std::function<void(Table &)> &f);

    void forEachTable(const std::function<void(const Table &)> &f) const;



    Lshal &mLshal;



    Table mServicesTable{};

    Table mPassthroughRefTable{};

    Table mImplementationsTable{};



    NullableOStream<std::ostream> mErr;

    NullableOStream<std::ostream> mOut;

    NullableOStream<std::ofstream> mFileOutput = nullptr;

    TableEntryCompare mSortColumn = nullptr;

    TableEntrySelect mSelectedColumns = 0;

    // If true, cmdlines will be printed instead of pid.

    bool mEnableCmdlines = false;



    // If true, calls IBase::debug(...) on each service.

    bool mEmitDebugInfo = false;



    bool mVintf = false;

    // If an entry does not exist, need to ask /proc/{pid}/cmdline to get it.

    // If an entry exist but is an empty string, process might have died.

    // If an entry exist and not empty, it contains the cached content of /proc/{pid}/cmdline.

    std::map<pid_t, std::string> mCmdlines;



    DISALLOW_COPY_AND_ASSIGN(ListCommand);

};





}  // namespace lshal

}  // namespace android



#endif  // FRAMEWORK_NATIVE_CMDS_LSHAL_LIST_COMMAND_H_

cmds/lshal/Lshal.cpp

+127 −739

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cmds/lshal/Lshal.h

+19 −70
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2016 The Android Open Source Project

 * 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.
@@ -17,94 +17,43 @@ 
#ifndef FRAMEWORK_NATIVE_CMDS_LSHAL_LSHAL_H_

#define FRAMEWORK_NATIVE_CMDS_LSHAL_LSHAL_H_



#include <stdint.h>



#include <fstream>

#include <iostream>

#include <string>

#include <vector>



#include <android-base/macros.h>

#include <android/hidl/manager/1.0/IServiceManager.h>

#include <utils/StrongPointer.h>



#include "NullableOStream.h"

#include "TableEntry.h"

#include "utils.h"



namespace android {

namespace lshal {



enum : unsigned int {

    OK                                      = 0,

    USAGE                                   = 1 << 0,

    NO_BINDERIZED_MANAGER                   = 1 << 1,

    NO_PASSTHROUGH_MANAGER                  = 1 << 2,

    DUMP_BINDERIZED_ERROR                   = 1 << 3,

    DUMP_PASSTHROUGH_ERROR                  = 1 << 4,

    DUMP_ALL_LIBS_ERROR                     = 1 << 5,

    IO_ERROR                                = 1 << 6,

};

using Status = unsigned int;



class Lshal {

public:

    int main(int argc, char **argv);



private:

    Status parseArgs(int argc, char **argv);

    Status fetch();

    void postprocess();

    void dump();

    void usage() const;

    void putEntry(TableEntrySource source, TableEntry &&entry);

    Status fetchPassthrough(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager);

    Status fetchBinderized(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager);

    Status fetchAllLibraries(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager);

    bool getReferencedPids(

        pid_t serverPid, std::map<uint64_t, Pids> *objects) const;

    void dumpTable();

    void dumpVintf() const;

    void printLine(

            const std::string &interfaceName,

            const std::string &transport,

            const std::string &arch,

            const std::string &server,

            const std::string &serverCmdline,

            const std::string &address, const std::string &clients,

            const std::string &clientCmdlines) const ;

    // Return /proc/{pid}/cmdline if it exists, else empty string.

    const std::string &getCmdline(pid_t pid);

    // Call getCmdline on all pid in pids. If it returns empty string, the process might

    // have died, and the pid is removed from pids.

    void removeDeadProcesses(Pids *pids);

    void forEachTable(const std::function<void(Table &)> &f);

    void forEachTable(const std::function<void(const Table &)> &f) const;

    Lshal();

    Status main(const Arg &arg);

    void usage(const std::string &command = "") const;

    NullableOStream<std::ostream> err() const;

    NullableOStream<std::ostream> out() const;



    void emitDebugInfo(

    static void emitDebugInfo(

            const sp<hidl::manager::V1_0::IServiceManager> &serviceManager,

            const std::string &interfaceName,

            const std::string &instanceName) const;



    Table mServicesTable{};

    Table mPassthroughRefTable{};

    Table mImplementationsTable{};



            const std::string &instanceName,

            const std::vector<std::string> &options,

            std::ostream &out);

private:

    Status parseArgs(const Arg &arg);

    std::string mCommand;

    Arg mCmdArgs;

    NullableOStream<std::ostream> mErr = std::cerr;

    NullableOStream<std::ostream> mOut = std::cout;

    NullableOStream<std::ofstream> mFileOutput = nullptr;

    TableEntryCompare mSortColumn = nullptr;

    TableEntrySelect mSelectedColumns = 0;

    // If true, cmdlines will be printed instead of pid.

    bool mEnableCmdlines = false;



    // If true, calls IBase::debug(...) on each service.

    bool mEmitDebugInfo = false;



    bool mVintf = false;

    // If an entry does not exist, need to ask /proc/{pid}/cmdline to get it.

    // If an entry exist but is an empty string, process might have died.

    // If an entry exist and not empty, it contains the cached content of /proc/{pid}/cmdline.

    std::map<pid_t, std::string> mCmdlines;

    DISALLOW_COPY_AND_ASSIGN(Lshal);

};





}  // namespace lshal

}  // namespace android