using System;

namespace Y.FileQueryEngine.UsnOperation
{
    internal static class UsnControlCode
    {
        private const UInt32 FILE_DEVICE_FILE_SYSTEM = 0x00000009;
        private const UInt32 METHOD_NEITHER          = 3;
        private const UInt32 METHOD_BUFFERED         = 0;
        private const UInt32 FILE_ANY_ACCESS         = 0;
        private const UInt32 FILE_SPECIAL_ACCESS     = 0;
        private const UInt32 FILE_READ_ACCESS        = 1;
        private const UInt32 FILE_WRITE_ACCESS       = 2;

        // FSCTL_QUERY_USN_JOURNAL = CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 61, METHOD_BUFFERED, FILE_ANY_ACCESS)
        public const UInt32 FSCTL_QUERY_USN_JOURNAL = (FILE_DEVICE_FILE_SYSTEM << 16) | (FILE_ANY_ACCESS << 14) | (61 << 2) | METHOD_BUFFERED;

        // FSCTL_ENUM_USN_DATA = CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 44,  METHOD_NEITHER, FILE_ANY_ACCESS)
        public const UInt32 FSCTL_ENUM_USN_DATA = (FILE_DEVICE_FILE_SYSTEM << 16) | (FILE_ANY_ACCESS << 14) | (44 << 2) | METHOD_NEITHER;

        // FSCTL_CREATE_USN_JOURNAL = CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 57,  METHOD_NEITHER, FILE_ANY_ACCESS)
        public const UInt32 FSCTL_CREATE_USN_JOURNAL = (FILE_DEVICE_FILE_SYSTEM << 16) | (FILE_ANY_ACCESS << 14) | (57 << 2) | METHOD_NEITHER;

        // FSCTL_READ_USN_JOURNAL = CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 46,  METHOD_NEITHER, FILE_ANY_ACCESS)
        public const UInt32 FSCTL_READ_USN_JOURNAL = (FILE_DEVICE_FILE_SYSTEM << 16) | (FILE_ANY_ACCESS << 14) | (46 << 2) | METHOD_NEITHER;

        // FSCTL_DELETE_USN_JOURNAL = CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 62, METHOD_BUFFERED, FILE_ANY_ACCESS)
        public const UInt32 FSCTL_DELETE_USN_JOURNAL = (FILE_DEVICE_FILE_SYSTEM << 16) | (FILE_ANY_ACCESS << 14) | (62 << 2) | METHOD_BUFFERED;
    }
}