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sys: POOL_NX_OPTIN

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This commit is contained in:
Bill Zissimopoulos
2016-12-14 15:06:00 -08:00
parent 08c283f2a9
commit 40735c4687
3 changed files with 13 additions and 3 deletions
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12
src/sys/util.c
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@ -851,8 +851,13 @@ NTSTATUS FspSafeMdlCreate(PMDL UserMdl, LOCK_OPERATION Operation, FSP_SAFE_MDL *
{
PAGED_CODE();
NTSTATUS Result;
*PSafeMdl = 0;
PVOID VirtualAddress = MmGetSystemAddressForMdlSafe(UserMdl, NormalPagePriority);
if (0 == VirtualAddress)
return STATUS_INSUFFICIENT_RESOURCES;
NTSTATUS Result;
ULONG ByteCount = MmGetMdlByteCount(UserMdl);
ULONG PageCount = ADDRESS_AND_SIZE_TO_SPAN_PAGES(VirtualAddress, ByteCount);
FSP_SAFE_MDL *SafeMdl;
@ -865,8 +870,6 @@ NTSTATUS FspSafeMdlCreate(PMDL UserMdl, LOCK_OPERATION Operation, FSP_SAFE_MDL *
ASSERT(0 != PageCount);
ASSERT(FlagOn(UserMdl->MdlFlags, MDL_SOURCE_IS_NONPAGED_POOL | MDL_PAGES_LOCKED));
*PSafeMdl = 0;
SafeMdl = FspAllocNonPaged(sizeof *SafeMdl);
if (0 == SafeMdl)
{
@ -996,6 +999,9 @@ VOID FspSafeMdlCopyBack(FSP_SAFE_MDL *SafeMdl)
return;
PVOID VirtualAddress = MmGetSystemAddressForMdlSafe(SafeMdl->UserMdl, NormalPagePriority);
if (0 == VirtualAddress)
return; /* should never happen, already checked in FspSafeMdlCreate */
ULONG ByteCount = MmGetMdlByteCount(SafeMdl->UserMdl);
ULONG PageCount = ADDRESS_AND_SIZE_TO_SPAN_PAGES(VirtualAddress, ByteCount);
ULONG ByteOffsetBgn0, ByteOffsetEnd0, ByteOffsetEnd1;