#ifndef _NTIOAPI_H
#if (PHNT_MODE != PHNT_MODE_KERNEL)

// pub
typedef struct _NAMED_PIPE_CREATE_PARAMETERS
{
    ULONG NamedPipeType;
    ULONG ReadMode;
    ULONG CompletionMode;
    ULONG MaximumInstances;
    ULONG InboundQuota;
    ULONG OutboundQuota;
    LARGE_INTEGER DefaultTimeout;
    BOOLEAN TimeoutSpecified;
} NAMED_PIPE_CREATE_PARAMETERS, *PNAMED_PIPE_CREATE_PARAMETERS;

#endif
#endif
View code on GitHub

// wdm.h

typedef struct _NAMED_PIPE_CREATE_PARAMETERS {
  ULONG         NamedPipeType;
  ULONG         ReadMode;
  ULONG         CompletionMode;
  ULONG         MaximumInstances;
  ULONG         InboundQuota;
  ULONG         OutboundQuota;
  LARGE_INTEGER DefaultTimeout;
  BOOLEAN       TimeoutSpecified;
} NAMED_PIPE_CREATE_PARAMETERS, *PNAMED_PIPE_CREATE_PARAMETERS;
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (ns-wdm-_named_pipe_create_parameters)

_NAMED_PIPE_CREATE_PARAMETERS structure

Description

The NAMED_PIPE_CREATE_PARAMETERS structure is used by the Windows subsystem to create a named pipe.

Members

`NamedPipeType`

Type of named pipe to create.

`ReadMode`

Mode in which to read the pipe.

`CompletionMode`

Specifies how the operation is to be completed.

`MaximumInstances`

Maximum number of simultaneous instances of the named pipe.

`InboundQuota`

Pool quota that is reserved for writes to the inbound side of the named pipe.

`OutboundQuota`

Pool quota that is reserved for writes to the outbound side of the named pipe.

`DefaultTimeout`

Pointer to a timeout value to use if a timeout value is not specified when waiting for an instance of a named pipe. This member is optional and can be set to NULL.

`TimeoutSpecified`

Boolean value that specifies whether a pointer to a timeout period was provided in the DefaultTimeout member.

Remarks

For an IRP_MJ_CREATE_NAMED_PIPE operation, FLT_PARAMETERS is a CreatePipe structure, and CreatePipe.Parameters points to a NAMED_PIPE_CREATE_PARAMETERS structure that describes the named pipe to create or open.

NAMED_PIPE_CREATE_PARAMETERS - NtDoc