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Commit 79338406 authored by Alessio Balsini's avatar Alessio Balsini
Browse files

dmctl: suspend and resume devices 



Export suspend and resume functionalities of libdm to command line
through dmctl.

Change-Id: I8e1dd7d67d8814631e4174d3ba169e705efc1df6
Bug: 137759376
Test: manual
Signed-off-by: default avatarAlessio Balsini <balsini@google.com>
parent bdc65bf0

fs_mgr/tools/dmctl.cpp

+32 −0
Original line number Diff line number Diff line
@@ -50,6 +50,8 @@ static int Usage(void) { 
    std::cerr << "  list <devices | targets> [-v]" << std::endl;

    std::cerr << "  getpath <dm-name>" << std::endl;

    std::cerr << "  status <dm-name>" << std::endl;

    std::cerr << "  resume <dm-name>" << std::endl;

    std::cerr << "  suspend <dm-name>" << std::endl;

    std::cerr << "  table <dm-name>" << std::endl;

    std::cerr << "  help" << std::endl;

    std::cerr << std::endl;
@@ -399,6 +401,34 @@ static int StatusCmdHandler(int argc, char** argv) { 
    return DumpTable("status", argc, argv);

}



static int ResumeCmdHandler(int argc, char** argv) {

    if (argc != 1) {

        std::cerr << "Invalid arguments, see \'dmctl help\'" << std::endl;

        return -EINVAL;

    }



    DeviceMapper& dm = DeviceMapper::Instance();

    if (!dm.ChangeState(argv[0], DmDeviceState::ACTIVE)) {

        std::cerr << "Could not resume device \"" << argv[0] << "\"." << std::endl;

        return -EINVAL;

    }

    return 0;

}



static int SuspendCmdHandler(int argc, char** argv) {

    if (argc != 1) {

        std::cerr << "Invalid arguments, see \'dmctl help\'" << std::endl;

        return -EINVAL;

    }



    DeviceMapper& dm = DeviceMapper::Instance();

    if (!dm.ChangeState(argv[0], DmDeviceState::SUSPENDED)) {

        std::cerr << "Could not suspend device \"" << argv[0] << "\"." << std::endl;

        return -EINVAL;

    }

    return 0;

}



static std::map<std::string, std::function<int(int, char**)>> cmdmap = {

        // clang-format off

        {"create", DmCreateCmdHandler},
@@ -408,6 +438,8 @@ static std::map<std::string, std::function<int(int, char**)>> cmdmap = { 
        {"getpath", GetPathCmdHandler},

        {"table", TableCmdHandler},

        {"status", StatusCmdHandler},

        {"resume", ResumeCmdHandler},

        {"suspend", SuspendCmdHandler},

        // clang-format on

};