IOCTL
下图显示控制代码结果格式：
在wdm.h中定义了一系统宏来解析/反解析IO控制代码：
//宏：用来生成IOCTL 和 FSCTL功能控制代码，功能代码0-2047由微软使用，2048-4095供用户使用
#define CTL_CODE( DeviceType, Function, Method, Access ) (((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method))
//宏：提取设备类型的宏
#define DEVICE_TYPE_FROM_CTL_CODE(ctrlCode) (((ULONG)(ctrlCode & 0xffff0000)) >> 16)
//宏：提取缓存方法
#define METHOD_FROM_CTL_CODE(ctrlCode) ((ULONG)(ctrlCode & 3))
//宏：提取功能代码
#define IoGetFunctionCodeFromCtlCode( ControlCode ) (( ControlCode >> 2) & 0x00000FFF )
设备类型代码：
1 // 2 // Define the various device type values. Note that values used by Microsoft 3 // Corporation are in the range 0-32767, and 32768-65535 are reserved for use 4 // by customers. 5 // 6 7 #define DEVICE_TYPE ULONG 8 9 #define FILE_DEVICE_BEEP 0x00000001 10 #define FILE_DEVICE_CD_ROM 0x00000002 11 #define FILE_DEVICE_CD_ROM_FILE_SYSTEM 0x00000003 12 #define FILE_DEVICE_CONTROLLER 0x00000004 13 #define FILE_DEVICE_DATALINK 0x00000005 14 #define FILE_DEVICE_DFS 0x00000006 15 #define FILE_DEVICE_DISK 0x00000007 16 #define FILE_DEVICE_DISK_FILE_SYSTEM 0x00000008 17 #define FILE_DEVICE_FILE_SYSTEM 0x00000009 18 #define FILE_DEVICE_INPORT_PORT 0x0000000a 19 #define FILE_DEVICE_KEYBOARD 0x0000000b 20 #define FILE_DEVICE_MAILSLOT 0x0000000c 21 #define FILE_DEVICE_MIDI_IN 0x0000000d 22 #define FILE_DEVICE_MIDI_OUT 0x0000000e 23 #define FILE_DEVICE_MOUSE 0x0000000f 24 #define FILE_DEVICE_MULTI_UNC_PROVIDER 0x00000010 25 #define FILE_DEVICE_NAMED_PIPE 0x00000011 26 #define FILE_DEVICE_NETWORK 0x00000012 27 #define FILE_DEVICE_NETWORK_BROWSER 0x00000013 28 #define FILE_DEVICE_NETWORK_FILE_SYSTEM 0x00000014 29 #define FILE_DEVICE_NULL 0x00000015 30 #define FILE_DEVICE_PARALLEL_PORT 0x00000016 31 #define FILE_DEVICE_PHYSICAL_NETCARD 0x00000017 32 #define FILE_DEVICE_PRINTER 0x00000018 33 #define FILE_DEVICE_SCANNER 0x00000019 34 #define FILE_DEVICE_SERIAL_MOUSE_PORT 0x0000001a 35 #define FILE_DEVICE_SERIAL_PORT 0x0000001b 36 #define FILE_DEVICE_SCREEN 0x0000001c 37 #define FILE_DEVICE_SOUND 0x0000001d 38 #define FILE_DEVICE_STREAMS 0x0000001e 39 #define FILE_DEVICE_TAPE 0x0000001f 40 #define FILE_DEVICE_TAPE_FILE_SYSTEM 0x00000020 41 #define FILE_DEVICE_TRANSPORT 0x00000021 42 #define FILE_DEVICE_UNKNOWN 0x00000022 43 #define FILE_DEVICE_VIDEO 0x00000023 44 #define FILE_DEVICE_VIRTUAL_DISK 0x00000024 45 #define FILE_DEVICE_WAVE_IN 0x00000025 46 #define FILE_DEVICE_WAVE_OUT 0x00000026 47 #define FILE_DEVICE_8042_PORT 0x00000027 48 #define FILE_DEVICE_NETWORK_REDIRECTOR 0x00000028 49 #define FILE_DEVICE_BATTERY 0x00000029 50 #define FILE_DEVICE_BUS_EXTENDER 0x0000002a 51 #define FILE_DEVICE_MODEM 0x0000002b 52 #define FILE_DEVICE_VDM 0x0000002c 53 #define FILE_DEVICE_MASS_STORAGE 0x0000002d 54 #define FILE_DEVICE_SMB 0x0000002e 55 #define FILE_DEVICE_KS 0x0000002f 56 #define FILE_DEVICE_CHANGER 0x00000030 57 #define FILE_DEVICE_SMARTCARD 0x00000031 58 #define FILE_DEVICE_ACPI 0x00000032 59 #define FILE_DEVICE_DVD 0x00000033 60 #define FILE_DEVICE_FULLSCREEN_VIDEO 0x00000034 61 #define FILE_DEVICE_DFS_FILE_SYSTEM 0x00000035 62 #define FILE_DEVICE_DFS_VOLUME 0x00000036 63 #define FILE_DEVICE_SERENUM 0x00000037 64 #define FILE_DEVICE_TERMSRV 0x00000038 65 #define FILE_DEVICE_KSEC 0x00000039 66 #define FILE_DEVICE_FIPS 0x0000003A 67 #define FILE_DEVICE_INFINIBAND 0x0000003B 68 #define FILE_DEVICE_VMBUS 0x0000003E 69 #define FILE_DEVICE_CRYPT_PROVIDER 0x0000003F 70 #define FILE_DEVICE_WPD 0x00000040 71 #define FILE_DEVICE_BLUETOOTH 0x00000041 72 #define FILE_DEVICE_MT_COMPOSITE 0x00000042 73 #define FILE_DEVICE_MT_TRANSPORT 0x00000043 74 #define FILE_DEVICE_BIOMETRIC 0x00000044 75 #define FILE_DEVICE_PMI 0x00000045 76 #define FILE_DEVICE_EHSTOR 0x00000046 77 #define FILE_DEVICE_DEVAPI 0x00000047 78 #define FILE_DEVICE_GPIO 0x00000048 79 #define FILE_DEVICE_USBEX 0x00000049 80 #define FILE_DEVICE_CONSOLE 0x00000050 81 #define FILE_DEVICE_NFP 0x00000051 82 #define FILE_DEVICE_SYSENV 0x00000052 83 #define FILE_DEVICE_VIRTUAL_BLOCK 0x00000053 84 #define FILE_DEVICE_POINT_OF_SERVICE 0x00000054 85 #define FILE_DEVICE_STORAGE_REPLICATION 0x00000055 86 #define FILE_DEVICE_TRUST_ENV 0x00000056 87 #define FILE_DEVICE_UCM 0x00000057 88 #define FILE_DEVICE_UCMTCPCI 0x00000058 89 #define FILE_DEVICE_PERSISTENT_MEMORY 0x00000059 90 #define FILE_DEVICE_NVDIMM 0x0000005a 91 #define FILE_DEVICE_HOLOGRAPHIC 0x0000005b 92 #define FILE_DEVICE_SDFXHCI 0x0000005c
缓存方法：
1 // 定义I/O和FS控制如何传递缓存的方法代码 2 3 #define METHOD_BUFFERED 0 4 #define METHOD_IN_DIRECT 1 5 #define METHOD_OUT_DIRECT 2 6 #define METHOD_NEITHER 3
Windows系统定义IOCTLS定义于winioctl.h文件中
Defining I/O Control Codes
IRP处理参考 生成的IOCTL对应IRP派遣函数 内核模式参见
Handling IRPs
文件系统访问功能代码：https://msdn.microsoft.com/en-us/library/windows/hardware/ff548603(v=vs.85).aspx