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- Added some checks for kernel or user space.

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- Added MmMapViewInSystemSpace/MmUnmapViewInSystemSpace (implemented by Eric).

svn path=/trunk/; revision=4699
This commit is contained in:
Hartmut Birr 2003-05-17 13:43:44 +00:00
parent 8e68ec6bf2
commit fd4d79b7fd
1 changed files with 113 additions and 12 deletions
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125
reactos/ntoskrnl/mm/section.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: section.c,v 1.111 2003/05/16 17:36:23 ekohl Exp $
/* $Id: section.c,v 1.112 2003/05/17 13:43:44 hbirr Exp $
*
* PROJECT: ReactOS kernel
* FILE: ntoskrnl/mm/section.c
@ -513,7 +513,7 @@ MmNotPresentFaultSectionView(PMADDRESS_SPACE AddressSpace,
(Region->Protect == PAGE_READWRITE ||
Region->Protect == PAGE_EXECUTE_READWRITE))
{
Attributes = PAGE_READONLY;
Attributes = Region->Protect == PAGE_READWRITE ? PAGE_READONLY : PAGE_EXECUTE_READ;
}
else
{
@ -1265,7 +1265,8 @@ MmPageOutSectionView(PMADDRESS_SPACE AddressSpace,
if (Section->AllocationAttributes & SEC_PHYSICALMEMORY)
{
DPRINT1("Trying to page out from physical memory section address 0x%X "
"process %d\n", Address, AddressSpace->Process->UniqueProcessId);
"process %d\n", Address,
AddressSpace->Process ? AddressSpace->Process->UniqueProcessId : 0);
KeBugCheck(0);
}
@ -1276,7 +1277,7 @@ MmPageOutSectionView(PMADDRESS_SPACE AddressSpace,
if (!MmIsPagePresent(AddressSpace->Process, Address))
{
DPRINT1("Trying to page out not-present page at (%d,0x%.8X).\n",
AddressSpace->Process->UniqueProcessId, Address);
AddressSpace->Process ? AddressSpace->Process->UniqueProcessId : 0, Address);
KeBugCheck(0);
}
PhysicalAddress =
@ -1390,7 +1391,7 @@ MmPageOutSectionView(PMADDRESS_SPACE AddressSpace,
{
DPRINT1("Private page, non-dirty but not swapped out "
"process %d address 0x%.8X\n",
AddressSpace->Process->UniqueProcessId,
AddressSpace->Process ? AddressSpace->Process->UniqueProcessId : 0,
Address);
KeBugCheck(0);
}
@ -1610,7 +1611,8 @@ MmWritePageSectionView(PMADDRESS_SPACE AddressSpace,
if (Section->AllocationAttributes & SEC_PHYSICALMEMORY)
{
DPRINT1("Trying to write back page from physical memory mapped at %X "
"process %d\n", Address, AddressSpace->Process->UniqueProcessId);
"process %d\n", Address,
AddressSpace->Process ? AddressSpace->Process->UniqueProcessId : 0);
KeBugCheck(0);
}
@ -1621,7 +1623,7 @@ MmWritePageSectionView(PMADDRESS_SPACE AddressSpace,
if (!MmIsPagePresent(AddressSpace->Process, Address))
{
DPRINT1("Trying to page out not-present page at (%d,0x%.8X).\n",
AddressSpace->Process->UniqueProcessId, Address);
AddressSpace->Process ? AddressSpace->Process->UniqueProcessId : 0, Address);
KeBugCheck(0);
}
PhysicalAddress =
@ -3584,16 +3586,115 @@ MmMapViewInSystemSpace (IN PVOID SectionObject,
OUT PVOID * MappedBase,
IN OUT PULONG ViewSize)
{
UNIMPLEMENTED;
return (STATUS_NOT_IMPLEMENTED);
PSECTION_OBJECT Section;
PMADDRESS_SPACE AddressSpace;
NTSTATUS Status;
DPRINT("MmMapViewInSystemSpace() called\n");
Section = (PSECTION_OBJECT)SectionObject;
AddressSpace = MmGetKernelAddressSpace();
MmLockSection(Section);
MmLockAddressSpace(AddressSpace);
if ((*ViewSize) == 0)
{
(*ViewSize) = Section->MaximumSize.u.LowPart;
}
else if ((*ViewSize) > Section->MaximumSize.u.LowPart)
{
(*ViewSize) = Section->MaximumSize.u.LowPart;
}
MmLockSectionSegment(Section->Segments);
Status = MmMapViewOfSegment(NULL,
AddressSpace,
Section,
Section->Segments,
MappedBase,
*ViewSize,
PAGE_READWRITE,
0);
MmUnlockSectionSegment(Section->Segments);
MmUnlockAddressSpace(AddressSpace);
MmUnlockSection(Section);
return Status;
}
NTSTATUS STDCALL
MmUnmapViewInSystemSpace (IN PVOID MappedBase)
{
UNIMPLEMENTED;
return (STATUS_NOT_IMPLEMENTED);
PMEMORY_AREA MemoryArea;
PMADDRESS_SPACE AddressSpace;
PSECTION_OBJECT Section;
PMM_SECTION_SEGMENT Segment;
KIRQL oldIrql;
PLIST_ENTRY CurrentEntry;
PMM_REGION CurrentRegion;
NTSTATUS Status;
DPRINT("MmUnmapViewInSystemSpace() called\n");
AddressSpace = MmGetKernelAddressSpace();
DPRINT("Opening memory area at base address %x\n",
MappedBase);
MemoryArea = MmOpenMemoryAreaByAddress(AddressSpace,
MappedBase);
if (MemoryArea == NULL)
{
return STATUS_UNSUCCESSFUL;
}
MemoryArea->DeleteInProgress = TRUE;
MmLockSection(MemoryArea->Data.SectionData.Section);
MmLockSectionSegment(MemoryArea->Data.SectionData.Segment);
Section = MemoryArea->Data.SectionData.Section;
Segment = MemoryArea->Data.SectionData.Segment;
KeAcquireSpinLock(&Section->ViewListLock, &oldIrql);
RemoveEntryList(&MemoryArea->Data.SectionData.ViewListEntry);
KeReleaseSpinLock(&Section->ViewListLock, oldIrql);
CurrentEntry = MemoryArea->Data.SectionData.RegionListHead.Flink;
while (CurrentEntry != &MemoryArea->Data.SectionData.RegionListHead)
{
CurrentRegion =
CONTAINING_RECORD(CurrentEntry, MM_REGION, RegionListEntry);
CurrentEntry = CurrentEntry->Flink;
ExFreePool(CurrentRegion);
}
if (MemoryArea->Data.SectionData.Section->AllocationAttributes &
SEC_PHYSICALMEMORY)
{
Status = MmFreeMemoryArea(AddressSpace,
MappedBase,
0,
NULL,
NULL);
}
else
{
Status = MmFreeMemoryArea(AddressSpace,
MappedBase,
0,
MmFreeSectionPage,
MemoryArea);
}
MmUnlockSectionSegment(Segment);
MmUnlockSection(Section);
ObDereferenceObject(Section);
return(STATUS_SUCCESS);
}
@ -3620,7 +3721,7 @@ MmSetBankedSection (DWORD Unknown0,
* ARGUMENTS
* SectionObjiect (OUT)
* Caller supplied storage for the resulting pointer
* to a SECTION_BOJECT instance;
* to a SECTION_OBJECT instance;
*
* DesiredAccess
* Specifies the desired access to the section can be a