Function cmdListClass

Drivers/Driver-SRC/setup/devcon/cmds.cpp:188–315

}

int cmdListClass(_In_ LPCTSTR BaseName, _In_opt_ LPCTSTR Machine, _In_ DWORD Flags, _In_ int argc, _In_reads_(argc) PTSTR argv[])
/*++

Routine Description:

    LISTCLASS <name>....
    lists all devices for each specified class
    there can be more than one physical class for a class name (shouldn't be
    though) in such cases, list each class
    if machine given, list devices for that machine

Arguments:

    BaseName  - name of executable
    Machine   - if non-NULL, remote machine
    argc/argv - remaining parameters - list of class names

Return Value:

    EXIT_xxxx

--*/
{
    DWORD reqGuids = 16;
    int argIndex;
    int failcode = EXIT_FAIL;
    LPGUID guids = NULL;
    HDEVINFO devs = INVALID_HANDLE_VALUE;

    UNREFERENCED_PARAMETER(BaseName);
    UNREFERENCED_PARAMETER(Flags);

    if(!argc) {
        return EXIT_USAGE;
    }

    guids = new GUID[reqGuids];
    if(!guids) {
        goto final;
    }

    for(argIndex = 0;argIndex<argc;argIndex++) {
        DWORD numGuids;
        DWORD index;

        if(!(argv[argIndex] && argv[argIndex][0])) {
            continue;
        }

        //
        // there could be one to many name to GUID mapping
        //
        while(!SetupDiClassGuidsFromNameEx(argv[argIndex],guids,reqGuids,&numGuids,Machine,NULL)) {
            if(GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
                goto final;
            }
            delete [] guids;
            reqGuids = numGuids;