Microsoft/NT4
Microsoft/NT4
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
ce47f986d8
NT4/private/inc/afd.h
Microsoft ce47f986d8 First commit
2020-09-30 17:12:29 +02:00

548 lines
17 KiB
C
Raw Blame History

/*++
Copyright (c) 1992 Microsoft Corporation
Module Name:
Afd.h
Abstract:
Contains structures and declarations for AFD. AFD stands for the
Ancillary Function Driver. This driver enhances the functionality
of TDI so that it is a sufficiently rich interface to support
user-mode sockets and XTI DLLs.
Author:
David Treadwell (davidtr) 20-Feb-1992
Revision History:
--*/
#ifndef _AFD_
#define _AFD_
//
// If WINSOCK2.H has not been included, then just embed the definition
// of the WSABUF and QOS structures here. This makes building AFD.SYS
// much easier.
//
#ifndef _WINSOCK2API_
typedef struct _WSABUF {
ULONG len;
PCHAR buf;
} WSABUF, *LPWSABUF;
typedef enum
{
BestEffortService,
ControlledLoadService,
PredictiveService,
GuaranteedDelayService,
GuaranteedService
} GUARANTEE;
typedef long int32;
typedef struct _flowspec
{
int32 TokenRate; /* In Bytes/sec */
int32 TokenBucketSize; /* In Bytes */
int32 PeakBandwidth; /* In Bytes/sec */
int32 Latency; /* In microseconds */
int32 DelayVariation; /* In microseconds */
GUARANTEE LevelOfGuarantee; /* Guaranteed, Predictive */
/* or Best Effort */
int32 CostOfCall; /* Reserved for future use, */
/* must be set to 0 now */
int32 NetworkAvailability; /* read-only: */
/* 1 if accessible, */
/* 0 if not */
} FLOWSPEC, *LPFLOWSPEC;
typedef struct _QualityOfService
{
FLOWSPEC SendingFlowspec; /* the flow spec for data sending */
FLOWSPEC ReceivingFlowspec; /* the flow spec for data receiving */
WSABUF ProviderSpecific; /* additional provider specific stuff */
} QOS, *LPQOS;
#endif
#define AFD_DEVICE_NAME L"\\Device\\Afd"
//
// Structures used on NtCreateFile() for AFD.
//
typedef enum _AFD_ENDPOINT_TYPE {
AfdEndpointTypeStream,
AfdEndpointTypeDatagram,
AfdEndpointTypeRaw,
AfdEndpointTypeSequencedPacket,
AfdEndpointTypeReliableMessage,
AfdEndpointTypeUnknown
} AFD_ENDPOINT_TYPE, *PAFD_ENDPOINT_TYPE;
#define MIN_AFD_ENDPOINT_TYPE AfdEndpointTypeStream
#define MAX_AFD_ENDPOINT_TYPE AfdEndpointTypeUnknown
typedef struct _AFD_OPEN_PACKET {
AFD_ENDPOINT_TYPE EndpointType;
LONG GroupID;
ULONG TransportDeviceNameLength;
WCHAR TransportDeviceName[1];
} AFD_OPEN_PACKET, *PAFD_OPEN_PACKET;
// *** the XX is to ensure natural alignment of the open packet part
// of the EA buffer
#define AfdOpenPacket "AfdOpenPacketXX"
#define AFD_OPEN_PACKET_NAME_LENGTH (sizeof(AfdOpenPacket) - 1)
//
// The input structure for IOCTL_AFD_START_LISTEN.
//
typedef struct _AFD_LISTEN_INFO {
ULONG MaximumConnectionQueue;
} AFD_LISTEN_INFO, *PAFD_LISTEN_INFO;
//
// The output structure for IOCTL_AFD_WAIT_FOR_LISTEN.
//
typedef struct _AFD_LISTEN_RESPONSE_INFO {
ULONG Sequence;
TRANSPORT_ADDRESS RemoteAddress;
} AFD_LISTEN_RESPONSE_INFO, *PAFD_LISTEN_RESPONSE_INFO;
//
// The input structure for IOCTL_AFD_ACCEPT.
//
typedef struct _AFD_ACCEPT_INFO {
ULONG Sequence;
HANDLE AcceptHandle;
} AFD_ACCEPT_INFO, *PAFD_ACCEPT_INFO;
typedef struct _AFD_SUPER_ACCEPT_INFO {
HANDLE AcceptHandle;
PVOID AcceptEndpoint;
PVOID AcceptFileObject;
ULONG ReceiveDataLength;
ULONG LocalAddressLength;
ULONG RemoteAddressLength;
AFD_LISTEN_RESPONSE_INFO ListenResponseInfo;
} AFD_SUPER_ACCEPT_INFO, *PAFD_SUPER_ACCEPT_INFO;
//
// The input structure for IOCTL_AFD_DEFER_ACCEPT.
//
typedef struct _AFD_DEFER_ACCEPT_INFO {
ULONG Sequence;
BOOLEAN Reject;
} AFD_DEFER_ACCEPT_INFO, *PAFD_DEFER_ACCEPT_INFO;
//
// Flags and input structure for IOCTL_AFD_PARTIAL_DISCONNECT.
//
#define AFD_PARTIAL_DISCONNECT_SEND 0x01
#define AFD_PARTIAL_DISCONNECT_RECEIVE 0x02
#define AFD_ABORTIVE_DISCONNECT 0x4
#define AFD_UNCONNECT_DATAGRAM 0x08
typedef struct _AFD_PARTIAL_DISCONNECT_INFO {
ULONG DisconnectMode;
LARGE_INTEGER Timeout;
} AFD_PARTIAL_DISCONNECT_INFO, *PAFD_PARTIAL_DISCONNECT_INFO;
//
// Structures for IOCTL_AFD_POLL.
//
typedef struct _AFD_POLL_HANDLE_INFO {
HANDLE Handle;
ULONG PollEvents;
NTSTATUS Status;
} AFD_POLL_HANDLE_INFO, *PAFD_POLL_HANDLE_INFO;
typedef struct _AFD_POLL_INFO {
LARGE_INTEGER Timeout;
ULONG NumberOfHandles;
BOOLEAN Unique;
AFD_POLL_HANDLE_INFO Handles[1];
} AFD_POLL_INFO, *PAFD_POLL_INFO;
#define AFD_POLL_RECEIVE_BIT 0
#define AFD_POLL_RECEIVE (1 << AFD_POLL_RECEIVE_BIT)
#define AFD_POLL_RECEIVE_EXPEDITED_BIT 1
#define AFD_POLL_RECEIVE_EXPEDITED (1 << AFD_POLL_RECEIVE_EXPEDITED_BIT)
#define AFD_POLL_SEND_BIT 2
#define AFD_POLL_SEND (1 << AFD_POLL_SEND_BIT)
#define AFD_POLL_DISCONNECT_BIT 3
#define AFD_POLL_DISCONNECT (1 << AFD_POLL_DISCONNECT_BIT)
#define AFD_POLL_ABORT_BIT 4
#define AFD_POLL_ABORT (1 << AFD_POLL_ABORT_BIT)
#define AFD_POLL_LOCAL_CLOSE_BIT 5
#define AFD_POLL_LOCAL_CLOSE (1 << AFD_POLL_LOCAL_CLOSE_BIT)
#define AFD_POLL_CONNECT_BIT 6
#define AFD_POLL_CONNECT (1 << AFD_POLL_CONNECT_BIT)
#define AFD_POLL_ACCEPT_BIT 7
#define AFD_POLL_ACCEPT (1 << AFD_POLL_ACCEPT_BIT)
#define AFD_POLL_CONNECT_FAIL_BIT 8
#define AFD_POLL_CONNECT_FAIL (1 << AFD_POLL_CONNECT_FAIL_BIT)
#define AFD_POLL_QOS_BIT 9
#define AFD_POLL_QOS (1 << AFD_POLL_QOS_BIT)
#define AFD_POLL_GROUP_QOS_BIT 10
#define AFD_POLL_GROUP_QOS (1 << AFD_POLL_GROUP_QOS_BIT)
#define AFD_NUM_POLL_EVENTS 11
#define AFD_POLL_ALL ((1 << AFD_NUM_POLL_EVENTS) - 1)
//
// Structure for querying receive information.
//
typedef struct _AFD_RECEIVE_INFORMATION {
ULONG BytesAvailable;
ULONG ExpeditedBytesAvailable;
} AFD_RECEIVE_INFORMATION, *PAFD_RECEIVE_INFORMATION;
//
// Structure for quering the TDI handles for an AFD endpoint.
//
#define AFD_QUERY_ADDRESS_HANDLE 1
#define AFD_QUERY_CONNECTION_HANDLE 2
typedef struct _AFD_HANDLE_INFO {
HANDLE TdiAddressHandle;
HANDLE TdiConnectionHandle;
} AFD_HANDLE_INFO, *PAFD_HANDLE_INFO;
//
// Structure and manifests for setting information in AFD.
//
typedef struct _AFD_INFORMATION {
ULONG InformationType;
union {
BOOLEAN Boolean;
ULONG Ulong;
LARGE_INTEGER LargeInteger;
} Information;
} AFD_INFORMATION, *PAFD_INFORMATION;
#define AFD_INLINE_MODE 0x01
#define AFD_NONBLOCKING_MODE 0x02
#define AFD_MAX_SEND_SIZE 0x03
#define AFD_SENDS_PENDING 0x04
#define AFD_MAX_PATH_SEND_SIZE 0x05
#define AFD_RECEIVE_WINDOW_SIZE 0x06
#define AFD_SEND_WINDOW_SIZE 0x07
#define AFD_CONNECT_TIME 0x08
#define AFD_CIRCULAR_QUEUEING 0x09
#define AFD_GROUP_ID_AND_TYPE 0x0A
//
// Structure for the transmit file IOCTL.
//
typedef struct _AFD_TRANSMIT_FILE_INFO {
LARGE_INTEGER Offset;
LARGE_INTEGER WriteLength;
ULONG SendPacketLength;
HANDLE FileHandle;
PVOID Head;
ULONG HeadLength;
PVOID Tail;
ULONG TailLength;
ULONG Flags;
} AFD_TRANSMIT_FILE_INFO, *PAFD_TRANSMIT_FILE_INFO;
//
// Flags for the TransmitFile API.
//
#define AFD_TF_DISCONNECT 0x01
#define AFD_TF_REUSE_SOCKET 0x02
#define AFD_TF_WRITE_BEHIND 0x04
#ifdef NT351
//
// Structure for queuing user-mode APCs.
//
typedef struct _AFD_QUEUE_APC_INFO {
HANDLE Thread;
PVOID ApcRoutine;
PVOID ApcContext;
PVOID SystemArgument1;
PVOID SystemArgument2;
} AFD_QUEUE_APC_INFO, *PAFD_QUEUE_APC_INFO;
#endif // NT351
//
// Flag definitions for the AfdFlags field in the AFD_SEND_INFO,
// AFD_SEND_DATAGRAM_INFO, AFD_RECV_INFO, and AFD_RECV_DATAGRAM_INFO
// structures.
//
#define AFD_NO_FAST_IO 0x0001 // Always fail Fast IO on this request.
#define AFD_OVERLAPPED 0x0002 // Overlapped operation.
//
// Structure for connected sends.
//
typedef struct _AFD_SEND_INFO {
LPWSABUF BufferArray;
ULONG BufferCount;
ULONG AfdFlags;
ULONG TdiFlags;
} AFD_SEND_INFO, *PAFD_SEND_INFO;
//
// Structure for unconnected datagram sends.
//
typedef struct _AFD_SEND_DATAGRAM_INFO {
LPWSABUF BufferArray;
ULONG BufferCount;
ULONG AfdFlags;
TDI_REQUEST_SEND_DATAGRAM TdiRequest;
TDI_CONNECTION_INFORMATION TdiConnInfo;
} AFD_SEND_DATAGRAM_INFO, *PAFD_SEND_DATAGRAM_INFO;
//
// Structure for connected recvs.
//
typedef struct _AFD_RECV_INFO {
LPWSABUF BufferArray;
ULONG BufferCount;
ULONG AfdFlags;
ULONG TdiFlags;
} AFD_RECV_INFO, *PAFD_RECV_INFO;
//
// Structure for receiving datagrams on unconnected sockets.
//
typedef struct _AFD_RECV_DATAGRAM_INFO {
LPWSABUF BufferArray;
ULONG BufferCount;
ULONG AfdFlags;
ULONG TdiFlags;
PVOID Address;
PULONG AddressLength;
} AFD_RECV_DATAGRAM_INFO, *PAFD_RECV_DATAGRAM_INFO;
#define AFD_MAX_TDI_FAST_ADDRESS 32
//
// Structure for event select.
//
typedef struct _AFD_EVENT_SELECT_INFO {
HANDLE Event;
ULONG PollEvents;
} AFD_EVENT_SELECT_INFO, *PAFD_EVENT_SELECT_INFO;
//
// Structure for enum network events.
//
typedef struct _AFD_ENUM_NETWORK_EVENTS_INFO {
HANDLE Event;
ULONG PollEvents;
NTSTATUS EventStatus[AFD_NUM_POLL_EVENTS];
} AFD_ENUM_NETWORK_EVENTS_INFO, *PAFD_ENUM_NETWORK_EVENTS_INFO;
//
// Structures for QOS and grouping.
//
typedef struct _AFD_QOS_INFO {
QOS Qos;
BOOLEAN GroupQos;
} AFD_QOS_INFO, *PAFD_QOS_INFO;
//
// Group membership type.
//
typedef enum _AFD_GROUP_TYPE {
GroupTypeNeither = 0,
GroupTypeConstrained = SG_CONSTRAINED_GROUP,
GroupTypeUnconstrained = SG_UNCONSTRAINED_GROUP
} AFD_GROUP_TYPE, *PAFD_GROUP_TYPE;
//
// Note that, for totally slimy reasons, the following
// structure must be exactly eight bytes long (the size
// of a LARGE_INTEGER). See msafd\socket.c and afd\misc.c
// for the gory details.
//
typedef struct _AFD_GROUP_INFO {
LONG GroupID;
AFD_GROUP_TYPE GroupType;
} AFD_GROUP_INFO, *PAFD_GROUP_INFO;
//
// Structure for validating group membership.
//
typedef struct _AFD_VALIDATE_GROUP_INFO {
LONG GroupID;
TRANSPORT_ADDRESS RemoteAddress;
} AFD_VALIDATE_GROUP_INFO, *PAFD_VALIDATE_GROUP_INFO;
//
// Structure for querying connect data on an unaccepted connection.
//
typedef struct _AFD_UNACCEPTED_CONNECT_DATA_INFO {
ULONG Sequence;
ULONG ConnectDataLength;
BOOLEAN LengthOnly;
} AFD_UNACCEPTED_CONNECT_DATA_INFO, *PAFD_UNACCEPTED_CONNECT_DATA_INFO;
//
// AFD IOCTL code definitions.
//
// N.B. To ensure the efficient of the code generated by AFD's
// IOCTL dispatcher, these IOCTL codes should be contiguous
// (no gaps).
//
// N.B. If new IOCTLs are added here, update the lookup table in
// ntos\afd\dispatch.c!
//
#define FSCTL_AFD_BASE FILE_DEVICE_NETWORK
#define _AFD_CONTROL_CODE(request,method) \
((FSCTL_AFD_BASE)<<12 | (request<<2) | method)
#define _AFD_REQUEST(ioctl) \
((((ULONG)(ioctl)) >> 2) & 0x03FF)
#define _AFD_BASE(ioctl) \
((((ULONG)(ioctl)) >> 12) & 0xFFFFF)
#define AFD_BIND 0
#define AFD_CONNECT 1
#define AFD_START_LISTEN 2
#define AFD_WAIT_FOR_LISTEN 3
#define AFD_ACCEPT 4
#define AFD_RECEIVE 5
#define AFD_RECEIVE_DATAGRAM 6
#define AFD_SEND 7
#define AFD_SEND_DATAGRAM 8
#define AFD_POLL 9
#define AFD_PARTIAL_DISCONNECT 10
#define AFD_GET_ADDRESS 11
#define AFD_QUERY_RECEIVE_INFO 12
#define AFD_QUERY_HANDLES 13
#define AFD_SET_INFORMATION 14
#define AFD_GET_CONTEXT_LENGTH 15
#define AFD_GET_CONTEXT 16
#define AFD_SET_CONTEXT 17
#define AFD_SET_CONNECT_DATA 18
#define AFD_SET_CONNECT_OPTIONS 19
#define AFD_SET_DISCONNECT_DATA 20
#define AFD_SET_DISCONNECT_OPTIONS 21
#define AFD_GET_CONNECT_DATA 22
#define AFD_GET_CONNECT_OPTIONS 23
#define AFD_GET_DISCONNECT_DATA 24
#define AFD_GET_DISCONNECT_OPTIONS 25
#define AFD_SIZE_CONNECT_DATA 26
#define AFD_SIZE_CONNECT_OPTIONS 27
#define AFD_SIZE_DISCONNECT_DATA 28
#define AFD_SIZE_DISCONNECT_OPTIONS 29
#define AFD_GET_INFORMATION 30
#define AFD_TRANSMIT_FILE 31
#define AFD_SUPER_ACCEPT 32
#define AFD_EVENT_SELECT 33
#define AFD_ENUM_NETWORK_EVENTS 34
#define AFD_DEFER_ACCEPT 35
#define AFD_WAIT_FOR_LISTEN_LIFO 36
#define AFD_SET_QOS 37
#define AFD_GET_QOS 38
#define AFD_NO_OPERATION 39
#define AFD_VALIDATE_GROUP 40
#define AFD_GET_UNACCEPTED_CONNECT_DATA 41
#ifdef NT351
#define AFD_QUEUE_APC 42
#endif // NT351
#define IOCTL_AFD_BIND _AFD_CONTROL_CODE( AFD_BIND, METHOD_BUFFERED )
#define IOCTL_AFD_CONNECT _AFD_CONTROL_CODE( AFD_CONNECT, METHOD_BUFFERED )
#define IOCTL_AFD_START_LISTEN _AFD_CONTROL_CODE( AFD_START_LISTEN, METHOD_BUFFERED )
#define IOCTL_AFD_WAIT_FOR_LISTEN _AFD_CONTROL_CODE( AFD_WAIT_FOR_LISTEN, METHOD_BUFFERED )
#define IOCTL_AFD_ACCEPT _AFD_CONTROL_CODE( AFD_ACCEPT, METHOD_BUFFERED )
#define IOCTL_AFD_RECEIVE _AFD_CONTROL_CODE( AFD_RECEIVE, METHOD_NEITHER )
#define IOCTL_AFD_RECEIVE_DATAGRAM _AFD_CONTROL_CODE( AFD_RECEIVE_DATAGRAM, METHOD_NEITHER )
#define IOCTL_AFD_SEND _AFD_CONTROL_CODE( AFD_SEND, METHOD_NEITHER )
#define IOCTL_AFD_SEND_DATAGRAM _AFD_CONTROL_CODE( AFD_SEND_DATAGRAM, METHOD_NEITHER )
#define IOCTL_AFD_POLL _AFD_CONTROL_CODE( AFD_POLL, METHOD_BUFFERED )
#define IOCTL_AFD_PARTIAL_DISCONNECT _AFD_CONTROL_CODE( AFD_PARTIAL_DISCONNECT, METHOD_BUFFERED )
#define IOCTL_AFD_GET_ADDRESS _AFD_CONTROL_CODE( AFD_GET_ADDRESS, METHOD_OUT_DIRECT )
#define IOCTL_AFD_QUERY_RECEIVE_INFO _AFD_CONTROL_CODE( AFD_QUERY_RECEIVE_INFO, METHOD_BUFFERED )
#define IOCTL_AFD_QUERY_HANDLES _AFD_CONTROL_CODE( AFD_QUERY_HANDLES, METHOD_BUFFERED )
#define IOCTL_AFD_SET_INFORMATION _AFD_CONTROL_CODE( AFD_SET_INFORMATION, METHOD_BUFFERED )
#define IOCTL_AFD_GET_CONTEXT_LENGTH _AFD_CONTROL_CODE( AFD_GET_CONTEXT_LENGTH, METHOD_BUFFERED )
#define IOCTL_AFD_GET_CONTEXT _AFD_CONTROL_CODE( AFD_GET_CONTEXT, METHOD_BUFFERED )
#define IOCTL_AFD_SET_CONTEXT _AFD_CONTROL_CODE( AFD_SET_CONTEXT, METHOD_BUFFERED )
#define IOCTL_AFD_SET_CONNECT_DATA _AFD_CONTROL_CODE( AFD_SET_CONNECT_DATA, METHOD_BUFFERED )
#define IOCTL_AFD_SET_CONNECT_OPTIONS _AFD_CONTROL_CODE( AFD_SET_CONNECT_OPTIONS, METHOD_BUFFERED )
#define IOCTL_AFD_SET_DISCONNECT_DATA _AFD_CONTROL_CODE( AFD_SET_DISCONNECT_DATA, METHOD_BUFFERED )
#define IOCTL_AFD_SET_DISCONNECT_OPTIONS _AFD_CONTROL_CODE( AFD_SET_DISCONNECT_OPTIONS, METHOD_BUFFERED )
#define IOCTL_AFD_GET_CONNECT_DATA _AFD_CONTROL_CODE( AFD_GET_CONNECT_DATA, METHOD_BUFFERED )
#define IOCTL_AFD_GET_CONNECT_OPTIONS _AFD_CONTROL_CODE( AFD_GET_CONNECT_OPTIONS, METHOD_BUFFERED )
#define IOCTL_AFD_GET_DISCONNECT_DATA _AFD_CONTROL_CODE( AFD_GET_DISCONNECT_DATA, METHOD_BUFFERED )
#define IOCTL_AFD_GET_DISCONNECT_OPTIONS _AFD_CONTROL_CODE( AFD_GET_DISCONNECT_OPTIONS, METHOD_BUFFERED )
#define IOCTL_AFD_SIZE_CONNECT_DATA _AFD_CONTROL_CODE( AFD_SIZE_CONNECT_DATA, METHOD_BUFFERED )
#define IOCTL_AFD_SIZE_CONNECT_OPTIONS _AFD_CONTROL_CODE( AFD_SIZE_CONNECT_OPTIONS, METHOD_BUFFERED )
#define IOCTL_AFD_SIZE_DISCONNECT_DATA _AFD_CONTROL_CODE( AFD_SIZE_DISCONNECT_DATA, METHOD_BUFFERED )
#define IOCTL_AFD_SIZE_DISCONNECT_OPTIONS _AFD_CONTROL_CODE( AFD_SIZE_DISCONNECT_OPTIONS, METHOD_BUFFERED )
#define IOCTL_AFD_GET_INFORMATION _AFD_CONTROL_CODE( AFD_GET_INFORMATION, METHOD_BUFFERED )
#define IOCTL_AFD_TRANSMIT_FILE _AFD_CONTROL_CODE( AFD_TRANSMIT_FILE, METHOD_NEITHER )
#define IOCTL_AFD_SUPER_ACCEPT _AFD_CONTROL_CODE( AFD_SUPER_ACCEPT, METHOD_OUT_DIRECT )
#define IOCTL_AFD_EVENT_SELECT _AFD_CONTROL_CODE( AFD_EVENT_SELECT, METHOD_BUFFERED )
#define IOCTL_AFD_ENUM_NETWORK_EVENTS _AFD_CONTROL_CODE( AFD_ENUM_NETWORK_EVENTS, METHOD_BUFFERED )
#define IOCTL_AFD_DEFER_ACCEPT _AFD_CONTROL_CODE( AFD_DEFER_ACCEPT, METHOD_BUFFERED )
#define IOCTL_AFD_WAIT_FOR_LISTEN_LIFO _AFD_CONTROL_CODE( AFD_WAIT_FOR_LISTEN_LIFO, METHOD_BUFFERED )
#define IOCTL_AFD_SET_QOS _AFD_CONTROL_CODE( AFD_SET_QOS, METHOD_BUFFERED )
#define IOCTL_AFD_GET_QOS _AFD_CONTROL_CODE( AFD_GET_QOS, METHOD_BUFFERED )
#define IOCTL_AFD_NO_OPERATION _AFD_CONTROL_CODE( AFD_NO_OPERATION, METHOD_NEITHER )
#define IOCTL_AFD_VALIDATE_GROUP _AFD_CONTROL_CODE( AFD_VALIDATE_GROUP, METHOD_BUFFERED )
#define IOCTL_AFD_GET_UNACCEPTED_CONNECT_DATA _AFD_CONTROL_CODE( AFD_GET_UNACCEPTED_CONNECT_DATA, METHOD_BUFFERED )
#ifdef NT351
#define IOCTL_AFD_QUEUE_APC _AFD_CONTROL_CODE( AFD_QUEUE_APC, METHOD_BUFFERED )
#endif // NT351
#endif // ndef _AFD_
Reference in New Issue View Git Blame Copy Permalink