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The ReadStructFromModeHelper function is a helper function that safely reads a structure of a specified size from memory based on the specified processor mode.
Syntax
FORCEINLINE
NTSTATUS
ReadStructFromModeHelper (
_Out_ PVOID Destination,
_In_ const PVOID Source,
_In_ SIZE_T Length,
_In_ KPROCESSOR_MODE Mode
);
Parameters
Destination
[out] A pointer to the buffer that receives the data read from memory.
Source
[in] A pointer to the memory ___location from which to read the data.
Size
[in] The size, in bytes, of the data to read.
Mode
[in] The processor mode that determines how the memory access is performed.
Return value
None
Remarks
This function is a helper function used internally by the user-mode accessor functions. It provides mode-aware reading of structures from memory, with extra safety checks when accessing user-mode memory.
Requirements
Requirement | Value |
---|---|
Minimum supported client | See Remarks |
Header | usermode_accessors.h |
Library | umaccess.lib |
IRQL | Less than or equal to APC_LEVEL |