FsRtlLookupLastLargeMcbEntryAndIndex - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// ntifs.h
BOOLEAN FsRtlLookupLastLargeMcbEntryAndIndex(
[in] PLARGE_MCB OpaqueMcb,
[out] PLONGLONG LargeVbn,
[out] PLONGLONG LargeLbn,
[out] PULONG Index
);
View the official Windows Driver Kit DDI referenceNo description available.
The FsRtlLookupLastLargeMcbEntryAndIndex routine retrieves the last mapping entry stored in a given map control block (MCB).
OpaqueMcb [in]Pointer to an initialized MCB structure to be searched.
LargeVbn [out]Pointer to a variable that receives the last virtual block number (VBN) that was mapped.
LargeLbn [out]Pointer to a variable that receives the logical block number (LBN) that is mapped to the VBN pointed to by LargeVbn, or -1 if no such LBN exists.
Index [out]Pointer to a variable that receives the index of the last run in the MCB.
FsRtlLookupLastLargeMcbEntryAndIndex returns FALSE if the MCB contains no mapping entries, FALSE otherwise.
FsRtlLookupLastLargeMcbEntryAndIndex searches for the last mapping of the last run in the MCB:
If the MCB contains no mappings, FsRtlLookupLastLargeMcbEntryAndIndex returns FALSE.
If the last mapping is a hole, FsRtlLookupLastLargeMcbEntryAndIndex returns FALSE, but the lookup operation yields a value of -1 for the LBN.
If the last mapping is not a hole, the lookup operation yields a positive value for the LBN, and FsRtlLookupLastLargeMcbEntryAndIndex returns FALSE.
The upper 32 bits of the LBN are ignored. Only the lower 32 bits are used.