RtlSetBits - NtDoc
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headers
#ifndef _NTRTL_H
/**
* The RtlSetBits routine sets all bits in a given range of a given bitmap variable.
*
* \param BitMapHeader A pointer to the RTL_BITMAP structure that describes the bitmap. This structure must have been initialized by the RtlInitializeBitMap routine.
* \param StartingIndex Specifies the start of the bit range to be set. This is a zero-based value indicating the position of the first bit in the range.
* \param NumberToSet Specifies how many bits to set.
* \remarks RtlSetBits simply returns control if the input NumberToSet is zero. StartingIndex plus NumberToSet must be less than or equal to BitMapHeader->SizeOfBitMap.
* \sa https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/wdm/nf-wdm-rtlsetbits
*/
NTSYSAPI
VOID
NTAPI
RtlSetBits(
_In_ PRTL_BITMAP BitMapHeader,
_In_range_(0, BitMapHeader->SizeOfBitMap - NumberToSet) ULONG StartingIndex,
_In_range_(0, BitMapHeader->SizeOfBitMap - StartingIndex) ULONG NumberToSet
);
View code on GitHub// wdm.h
NTSYSAPI VOID RtlSetBits(
[in] PRTL_BITMAP BitMapHeader,
[in] ULONG StartingIndex,
[in] ULONG NumberToSet
);
View the official Windows Driver Kit DDI referenceThis function is documented in Windows Driver Kit.
The RtlSetBits routine sets all bits in a given range of a given bitmap variable.
BitMapHeader [in]A pointer to the RTL_BITMAP structure that describes the bitmap. This structure must have been initialized by the RtlInitializeBitMap routine.
StartingIndex [in]Specifies the start of the bit range to be set. This is a zero-based value indicating the position of the first bit in the range.
NumberToSet [in]Specifies how many bits to set.
None
RtlSetBits simply returns control if the input NumberToSet is zero. StartingIndex plus NumberToSet must be less than or equal to BitMapHeader->SizeOfBitMap.
Callers of RtlSetBits must be running at IRQL <= APC_LEVEL if the memory that contains the bitmap variable is pageable or the memory at BitMapHeader is pageable. Otherwise, RtlSetBits can be called at any IRQL.