IOCTL_STORAGE_SET_READ_AHEAD - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// ntddcdvd.h

// CTL_CODE(0x002d, 0x100, METHOD_BUFFERED, FILE_READ_ACCESS)
#define IOCTL_STORAGE_SET_READ_AHEAD 0x002D4400
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Windows Driver Kit DDI reference (ni-ntddcdvd-ioctl_storage_set_read_ahead)

IOCTL_STORAGE_SET_READ_AHEAD IOCTL

Description

Causes the device to skip to the given target address when the device reaches a certain trigger address during read-ahead caching.

Parameters

Major code

Input buffer

The buffer at Irp->AssociatedIrp.SystemBuffer contains a STORAGE_SET_READ_AHEAD structure that indicates the trigger and target addresses.

Input buffer length

The length of a STORAGE_SET_READ_AHEAD structure.

Output buffer

None.

Output buffer length

None.

Input/output buffer

Input/output buffer length

Status block

The Information field is set to zero. The Status field is set to STATUS_SUCCESS.

See also

STORAGE_SET_READ_AHEAD

View the official Windows Driver Kit DDI reference

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