ReactOS  r76032
section.c File Reference
#include <ntoskrnl.h>
#include <debug.h>
#include <mm/ARM3/miarm.h>
Include dependency graph for section.c:

Go to the source code of this file.

Macros

#define NDEBUG
 
#define MODULE_INVOLVED_IN_ARM3
 

Functions

BOOLEAN NTAPI MiIsProtectionCompatible (IN ULONG SectionPageProtection, IN ULONG NewSectionPageProtection)
 
ACCESS_MASK NTAPI MiArm3GetCorrectFileAccessMask (IN ACCESS_MASK SectionPageProtection)
 
ULONG NTAPI MiMakeProtectionMask (IN ULONG Protect)
 
BOOLEAN NTAPI MiInitializeSystemSpaceMap (IN PMMSESSION InputSession OPTIONAL)
 
PVOID NTAPI MiInsertInSystemSpace (IN PMMSESSION Session, IN ULONG Buckets, IN PCONTROL_AREA ControlArea)
 
NTSTATUS NTAPI MiAddMappedPtes (IN PMMPTE FirstPte, IN PFN_NUMBER PteCount, IN PCONTROL_AREA ControlArea)
 
VOID NTAPI MiFillSystemPageDirectory (IN PVOID Base, IN SIZE_T NumberOfBytes)
 
NTSTATUS NTAPI MiCheckPurgeAndUpMapCount (IN PCONTROL_AREA ControlArea, IN BOOLEAN FailIfSystemViews)
 
PSUBSECTION NTAPI MiLocateSubsection (IN PMMVAD Vad, IN ULONG_PTR Vpn)
 
VOID NTAPI MiSegmentDelete (IN PSEGMENT Segment)
 
VOID NTAPI MiCheckControlArea (IN PCONTROL_AREA ControlArea, IN KIRQL OldIrql)
 
VOID NTAPI MiDereferenceControlArea (IN PCONTROL_AREA ControlArea)
 
VOID NTAPI MiRemoveMappedView (IN PEPROCESS CurrentProcess, IN PMMVAD Vad)
 
NTSTATUS NTAPI MiUnmapViewOfSection (IN PEPROCESS Process, IN PVOID BaseAddress, IN ULONG Flags)
 
NTSTATUS NTAPI MiSessionCommitPageTables (IN PVOID StartVa, IN PVOID EndVa)
 
NTSTATUS NTAPI MiMapViewInSystemSpace (IN PVOID Section, IN PMMSESSION Session, OUT PVOID *MappedBase, IN OUT PSIZE_T ViewSize)
 
VOID NTAPI MiSetControlAreaSymbolsLoaded (IN PCONTROL_AREA ControlArea)
 
VOID NTAPI MiLoadUserSymbols (IN PCONTROL_AREA ControlArea, IN PVOID BaseAddress, IN PEPROCESS Process)
 
NTSTATUS NTAPI MiMapViewOfDataSection (IN PCONTROL_AREA ControlArea, IN PEPROCESS Process, IN PVOID *BaseAddress, IN PLARGE_INTEGER SectionOffset, IN PSIZE_T ViewSize, IN PSECTION Section, IN SECTION_INHERIT InheritDisposition, IN ULONG ProtectionMask, IN SIZE_T CommitSize, IN ULONG_PTR ZeroBits, IN ULONG AllocationType)
 
VOID NTAPI MiSubsectionConsistent (IN PSUBSECTION Subsection)
 
NTSTATUS NTAPI MiCreateDataFileMap (IN PFILE_OBJECT File, OUT PSEGMENT *Segment, IN PSIZE_T MaximumSize, IN ULONG SectionPageProtection, IN ULONG AllocationAttributes, IN ULONG IgnoreFileSizing)
 
NTSTATUS NTAPI MiCreatePagingFileMap (OUT PSEGMENT *Segment, IN PSIZE_T MaximumSize, IN ULONG ProtectionMask, IN ULONG AllocationAttributes)
 
NTSTATUS NTAPI MiGetFileObjectForSectionAddress (IN PVOID Address, OUT PFILE_OBJECT *FileObject)
 
PFILE_OBJECT NTAPI MmGetFileObjectForSection (IN PVOID SectionObject)
 
static PFILE_OBJECT MiGetFileObjectForVad (_In_ PMMVAD Vad)
 
VOID NTAPI MmGetImageInformation (OUT PSECTION_IMAGE_INFORMATION ImageInformation)
 
NTSTATUS NTAPI MmGetFileNameForFileObject (IN PFILE_OBJECT FileObject, OUT POBJECT_NAME_INFORMATION *ModuleName)
 
NTSTATUS NTAPI MmGetFileNameForSection (IN PVOID Section, OUT POBJECT_NAME_INFORMATION *ModuleName)
 
NTSTATUS NTAPI MmGetFileNameForAddress (IN PVOID Address, OUT PUNICODE_STRING ModuleName)
 
NTSTATUS NTAPI MiQueryMemorySectionName (IN HANDLE ProcessHandle, IN PVOID BaseAddress, OUT PVOID MemoryInformation, IN SIZE_T MemoryInformationLength, OUT PSIZE_T ReturnLength)
 
VOID NTAPI MiFlushTbAndCapture (IN PMMVAD FoundVad, IN PMMPTE PointerPte, IN ULONG ProtectionMask, IN PMMPFN Pfn1, IN BOOLEAN UpdateDirty)
 
NTSTATUS NTAPI MiSetProtectionOnSection (IN PEPROCESS Process, IN PMMVAD FoundVad, IN PVOID StartingAddress, IN PVOID EndingAddress, IN ULONG NewProtect, OUT PULONG CapturedOldProtect, IN ULONG DontCharge, OUT PULONG Locked)
 
VOID NTAPI MiRemoveMappedPtes (IN PVOID BaseAddress, IN ULONG NumberOfPtes, IN PCONTROL_AREA ControlArea, IN PMMSUPPORT Ws)
 
ULONG NTAPI MiRemoveFromSystemSpace (IN PMMSESSION Session, IN PVOID Base, OUT PCONTROL_AREA *ControlArea)
 
NTSTATUS NTAPI MiUnmapViewInSystemSpace (IN PMMSESSION Session, IN PVOID MappedBase)
 
NTSTATUS NTAPI MmCreateArm3Section (OUT PVOID *SectionObject, IN ACCESS_MASK DesiredAccess, IN POBJECT_ATTRIBUTES ObjectAttributes OPTIONAL, IN PLARGE_INTEGER InputMaximumSize, IN ULONG SectionPageProtection, IN ULONG AllocationAttributes, IN HANDLE FileHandle OPTIONAL, IN PFILE_OBJECT FileObject OPTIONAL)
 
NTSTATUS NTAPI MmMapViewOfArm3Section (IN PVOID SectionObject, IN PEPROCESS Process, IN OUT PVOID *BaseAddress, IN ULONG_PTR ZeroBits, IN SIZE_T CommitSize, IN OUT PLARGE_INTEGER SectionOffset OPTIONAL, IN OUT PSIZE_T ViewSize, IN SECTION_INHERIT InheritDisposition, IN ULONG AllocationType, IN ULONG Protect)
 
BOOLEAN NTAPI MmDisableModifiedWriteOfSection (IN PSECTION_OBJECT_POINTERS SectionObjectPointer)
 
BOOLEAN NTAPI MmForceSectionClosed (IN PSECTION_OBJECT_POINTERS SectionObjectPointer, IN BOOLEAN DelayClose)
 
NTSTATUS NTAPI MmMapViewInSessionSpace (IN PVOID Section, OUT PVOID *MappedBase, IN OUT PSIZE_T ViewSize)
 
NTSTATUS NTAPI MmUnmapViewInSessionSpace (IN PVOID MappedBase)
 
NTSTATUS NTAPI MmUnmapViewOfSection (IN PEPROCESS Process, IN PVOID BaseAddress)
 
NTSTATUS NTAPI MmUnmapViewInSystemSpace (IN PVOID MappedBase)
 
NTSTATUS NTAPI MmCommitSessionMappedView (IN PVOID MappedBase, IN SIZE_T ViewSize)
 
VOID NTAPI MiDeleteARM3Section (PVOID ObjectBody)
 
ULONG NTAPI MmDoesFileHaveUserWritableReferences (IN PSECTION_OBJECT_POINTERS SectionPointer)
 
NTSTATUS NTAPI NtAreMappedFilesTheSame (IN PVOID File1MappedAsAnImage, IN PVOID File2MappedAsFile)
 
NTSTATUS NTAPI NtCreateSection (OUT PHANDLE SectionHandle, IN ACCESS_MASK DesiredAccess, IN POBJECT_ATTRIBUTES ObjectAttributes OPTIONAL, IN PLARGE_INTEGER MaximumSize OPTIONAL, IN ULONG SectionPageProtection OPTIONAL, IN ULONG AllocationAttributes, IN HANDLE FileHandle OPTIONAL)
 
NTSTATUS NTAPI NtOpenSection (OUT PHANDLE SectionHandle, IN ACCESS_MASK DesiredAccess, IN POBJECT_ATTRIBUTES ObjectAttributes)
 
NTSTATUS NTAPI NtMapViewOfSection (IN HANDLE SectionHandle, IN HANDLE ProcessHandle, IN OUT PVOID *BaseAddress, IN ULONG_PTR ZeroBits, IN SIZE_T CommitSize, IN OUT PLARGE_INTEGER SectionOffset OPTIONAL, IN OUT PSIZE_T ViewSize, IN SECTION_INHERIT InheritDisposition, IN ULONG AllocationType, IN ULONG Protect)
 
NTSTATUS NTAPI NtUnmapViewOfSection (IN HANDLE ProcessHandle, IN PVOID BaseAddress)
 
NTSTATUS NTAPI NtExtendSection (IN HANDLE SectionHandle, IN OUT PLARGE_INTEGER NewMaximumSize)
 

Variables

ACCESS_MASK MmMakeSectionAccess [8]
 
ACCESS_MASK MmMakeFileAccess [8]
 
CHAR MmUserProtectionToMask1 [16]
 
CHAR MmUserProtectionToMask2 [16]
 
ULONG MmCompatibleProtectionMask [8]
 
MMSESSION MmSession
 
KGUARDED_MUTEX MmSectionCommitMutex
 
MM_AVL_TABLE MmSectionBasedRoot
 
KGUARDED_MUTEX MmSectionBasedMutex
 
PVOID MmHighSectionBase
 

Macro Definition Documentation

#define MODULE_INVOLVED_IN_ARM3

Definition at line 15 of file section.c.

#define NDEBUG

Definition at line 12 of file section.c.

Function Documentation

NTSTATUS NTAPI MiAddMappedPtes ( IN PMMPTE  FirstPte,
IN PFN_NUMBER  PteCount,
IN PCONTROL_AREA  ControlArea 
)

Definition at line 417 of file section.c.

Referenced by MiMapViewInSystemSpace().

420 {
421  MMPTE TempPte;
422  PMMPTE PointerPte, ProtoPte, LastProtoPte, LastPte;
423  PSUBSECTION Subsection;
424 
425  /* ARM3 doesn't support this yet */
426  ASSERT(ControlArea->u.Flags.GlobalOnlyPerSession == 0);
427  ASSERT(ControlArea->u.Flags.Rom == 0);
428  ASSERT(ControlArea->FilePointer == NULL);
429 
430  /* Sanity checks */
431  ASSERT(PteCount != 0);
432  ASSERT(ControlArea->NumberOfMappedViews >= 1);
433  ASSERT(ControlArea->NumberOfUserReferences >= 1);
434  ASSERT(ControlArea->NumberOfSectionReferences != 0);
435  ASSERT(ControlArea->u.Flags.BeingCreated == 0);
436  ASSERT(ControlArea->u.Flags.BeingDeleted == 0);
437  ASSERT(ControlArea->u.Flags.BeingPurged == 0);
438 
439  /* Get the PTEs for the actual mapping */
440  PointerPte = FirstPte;
441  LastPte = FirstPte + PteCount;
442 
443  /* Get the prototype PTEs that desribe the section mapping in the subsection */
444  Subsection = (PSUBSECTION)(ControlArea + 1);
445  ProtoPte = Subsection->SubsectionBase;
446  LastProtoPte = &Subsection->SubsectionBase[Subsection->PtesInSubsection];
447 
448  /* Loop the PTEs for the mapping */
449  while (PointerPte < LastPte)
450  {
451  /* We may have run out of prototype PTEs in this subsection */
452  if (ProtoPte >= LastProtoPte)
453  {
454  /* But we don't handle this yet */
455  ASSERT(FALSE);
456  }
457 
458  /* The PTE should be completely clear */
459  ASSERT(PointerPte->u.Long == 0);
460 
461  /* Build the prototype PTE and write it */
462  MI_MAKE_PROTOTYPE_PTE(&TempPte, ProtoPte);
463  MI_WRITE_INVALID_PTE(PointerPte, TempPte);
464 
465  /* Keep going */
466  PointerPte++;
467  ProtoPte++;
468  }
469 
470  /* No failure path */
471  return STATUS_SUCCESS;
472 }
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
return STATUS_SUCCESS
Definition: btrfs.c:2664
#define FALSE
Definition: types.h:117
smooth NULL
Definition: ftsmooth.c:557
HARDWARE_PTE_ARMV6 TempPte
Definition: winldr.c:75
struct _SUBSECTION * PSUBSECTION
ULONG_PTR Long
Definition: mmtypes.h:215
FORCEINLINE VOID MI_WRITE_INVALID_PTE(IN PMMPTE PointerPte, IN MMPTE InvalidPte)
Definition: miarm.h:943
FORCEINLINE VOID MI_MAKE_PROTOTYPE_PTE(IN PMMPTE NewPte, IN PMMPTE PointerPte)
Definition: mm.h:253
union _MMPTE::@2072 u
PMMPTE SubsectionBase
Definition: mmtypes.h:571
ULONG PtesInSubsection
Definition: mmtypes.h:573
ACCESS_MASK NTAPI MiArm3GetCorrectFileAccessMask ( IN ACCESS_MASK  SectionPageProtection)

Definition at line 140 of file section.c.

141 {
142  ULONG ProtectionMask;
143 
144  /* Calculate the protection mask and make sure it's valid */
146  if (ProtectionMask == MM_INVALID_PROTECTION)
147  {
148  DPRINT1("Invalid protection mask\n");
150  }
151 
152  /* Now convert it to the required file access */
153  return MmMakeFileAccess[ProtectionMask & 0x7];
154 }
#define MM_INVALID_PROTECTION
Definition: miarm.h:69
ACCESS_MASK MmMakeFileAccess[8]
Definition: section.c:32
_In_ ACCESS_MASK _In_opt_ POBJECT_ATTRIBUTES _In_opt_ PLARGE_INTEGER _In_ ULONG SectionPageProtection
Definition: mmfuncs.h:360
ULONG NTAPI MiMakeProtectionMask(IN ULONG Protect)
Definition: section.c:158
#define STATUS_INVALID_PAGE_PROTECTION
Definition: ntstatus.h:291
#define DPRINT1
Definition: precomp.h:8
unsigned int ULONG
Definition: retypes.h:1
VOID NTAPI MiCheckControlArea ( IN PCONTROL_AREA  ControlArea,
IN KIRQL  OldIrql 
)

Definition at line 728 of file section.c.

Referenced by MiDeleteARM3Section(), MiDereferenceControlArea(), MiRemoveMappedPtes(), MiRemoveMappedView(), and MmCreateArm3Section().

730 {
731  BOOLEAN DeleteSegment = FALSE;
733 
734  /* Check if this is the last reference or view */
735  if (!(ControlArea->NumberOfMappedViews) &&
736  !(ControlArea->NumberOfSectionReferences))
737  {
738  /* There should be no more user references either */
739  ASSERT(ControlArea->NumberOfUserReferences == 0);
740 
741  /* Not yet supported */
742  ASSERT(ControlArea->FilePointer == NULL);
743 
744  /* The control area is being destroyed */
745  ControlArea->u.Flags.BeingDeleted = TRUE;
746  DeleteSegment = TRUE;
747  }
748 
749  /* Release the PFN lock */
751 
752  /* Delete the segment if needed */
753  if (DeleteSegment)
754  {
755  /* No more user write references at all */
756  ASSERT(ControlArea->WritableUserReferences == 0);
757  MiSegmentDelete(ControlArea->Segment);
758  }
759 }
#define KeGetCurrentIrql()
Definition: env_spec_w32.h:706
#define TRUE
Definition: types.h:120
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
#define FALSE
Definition: types.h:117
smooth NULL
Definition: ftsmooth.c:557
unsigned char BOOLEAN
VOID NTAPI MiSegmentDelete(IN PSEGMENT Segment)
Definition: section.c:605
VOID FASTCALL KeReleaseQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber, IN KIRQL OldIrql)
Definition: spinlock.c:154
_Requires_lock_held_ Interrupt _Releases_lock_ Interrupt _In_ _IRQL_restores_ KIRQL OldIrql
Definition: kefuncs.h:803
#define DISPATCH_LEVEL
Definition: env_spec_w32.h:696
NTSTATUS NTAPI MiCheckPurgeAndUpMapCount ( IN PCONTROL_AREA  ControlArea,
IN BOOLEAN  FailIfSystemViews 
)

Definition at line 544 of file section.c.

Referenced by MiMapViewInSystemSpace(), and MiMapViewOfDataSection().

546 {
547  KIRQL OldIrql;
548 
549  /* Flag not yet supported */
550  ASSERT(FailIfSystemViews == FALSE);
551 
552  /* Lock the PFN database */
554 
555  /* State not yet supported */
556  ASSERT(ControlArea->u.Flags.BeingPurged == 0);
557 
558  /* Increase the reference counts */
559  ControlArea->NumberOfMappedViews++;
560  ControlArea->NumberOfUserReferences++;
561  ASSERT(ControlArea->NumberOfSectionReferences != 0);
562 
563  /* Release the PFN lock and return success */
565  return STATUS_SUCCESS;
566 }
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
return STATUS_SUCCESS
Definition: btrfs.c:2664
UCHAR KIRQL
Definition: env_spec_w32.h:591
#define FALSE
Definition: types.h:117
VOID FASTCALL KeReleaseQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber, IN KIRQL OldIrql)
Definition: spinlock.c:154
_Requires_lock_held_ Interrupt _Releases_lock_ Interrupt _In_ _IRQL_restores_ KIRQL OldIrql
Definition: kefuncs.h:803
KIRQL FASTCALL KeAcquireQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber)
Definition: spinlock.c:108
NTSTATUS NTAPI MiCreateDataFileMap ( IN PFILE_OBJECT  File,
OUT PSEGMENT Segment,
IN PSIZE_T  MaximumSize,
IN ULONG  SectionPageProtection,
IN ULONG  AllocationAttributes,
IN ULONG  IgnoreFileSizing 
)

Definition at line 1495 of file section.c.

Referenced by MmCreateArm3Section().

1501 {
1502  /* Not yet implemented */
1503  ASSERT(FALSE);
1504  *Segment = NULL;
1505  return STATUS_NOT_IMPLEMENTED;
1506 }
#define STATUS_NOT_IMPLEMENTED
Definition: ntstatus.h:225
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
#define FALSE
Definition: types.h:117
smooth NULL
Definition: ftsmooth.c:557
_Inout_ PVOID Segment
Definition: exfuncs.h:893
NTSTATUS NTAPI MiCreatePagingFileMap ( OUT PSEGMENT Segment,
IN PSIZE_T  MaximumSize,
IN ULONG  ProtectionMask,
IN ULONG  AllocationAttributes 
)

Definition at line 1510 of file section.c.

Referenced by MmCreateArm3Section().

1514 {
1515  SIZE_T SizeLimit;
1516  PFN_COUNT PteCount;
1517  PMMPTE PointerPte;
1518  MMPTE TempPte;
1519  PCONTROL_AREA ControlArea;
1520  PSEGMENT NewSegment;
1521  PSUBSECTION Subsection;
1522  PAGED_CODE();
1523 
1524  /* No large pages in ARM3 yet */
1526 
1527  /* Pagefile-backed sections need a known size */
1528  if (!(*MaximumSize)) return STATUS_INVALID_PARAMETER_4;
1529 
1530  /* Calculate the maximum size possible, given the Prototype PTEs we'll need */
1531  SizeLimit = MAXULONG_PTR - sizeof(SEGMENT);
1532  SizeLimit /= sizeof(MMPTE);
1533  SizeLimit <<= PAGE_SHIFT;
1534 
1535  /* Fail if this size is too big */
1536  if (*MaximumSize > SizeLimit) return STATUS_SECTION_TOO_BIG;
1537 
1538  /* Calculate how many Prototype PTEs will be needed */
1539  PteCount = (PFN_COUNT)((*MaximumSize + PAGE_SIZE - 1) >> PAGE_SHIFT);
1540 
1541  /* For commited memory, we must have a valid protection mask */
1542  if (AllocationAttributes & SEC_COMMIT) ASSERT(ProtectionMask != 0);
1543 
1544  /* The segment contains all the Prototype PTEs, allocate it in paged pool */
1545  NewSegment = ExAllocatePoolWithTag(PagedPool,
1546  sizeof(SEGMENT) +
1547  sizeof(MMPTE) * (PteCount - 1),
1548  'tSmM');
1549  ASSERT(NewSegment);
1550  *Segment = NewSegment;
1551 
1552  /* Now allocate the control area, which has the subsection structure */
1553  ControlArea = ExAllocatePoolWithTag(NonPagedPool,
1554  sizeof(CONTROL_AREA) + sizeof(SUBSECTION),
1555  'tCmM');
1556  ASSERT(ControlArea);
1557 
1558  /* And zero it out, filling the basic segmnet pointer and reference fields */
1559  RtlZeroMemory(ControlArea, sizeof(CONTROL_AREA) + sizeof(SUBSECTION));
1560  ControlArea->Segment = NewSegment;
1561  ControlArea->NumberOfSectionReferences = 1;
1562  ControlArea->NumberOfUserReferences = 1;
1563 
1564  /* Convert allocation attributes to control area flags */
1565  if (AllocationAttributes & SEC_BASED) ControlArea->u.Flags.Based = 1;
1566  if (AllocationAttributes & SEC_RESERVE) ControlArea->u.Flags.Reserve = 1;
1567  if (AllocationAttributes & SEC_COMMIT) ControlArea->u.Flags.Commit = 1;
1568 
1569  /* We just allocated it */
1570  ControlArea->u.Flags.BeingCreated = 1;
1571 
1572  /* The subsection follows, write the mask, PTE count and point back to the CA */
1573  Subsection = (PSUBSECTION)(ControlArea + 1);
1574  Subsection->ControlArea = ControlArea;
1575  Subsection->PtesInSubsection = PteCount;
1576  Subsection->u.SubsectionFlags.Protection = ProtectionMask;
1577 
1578  /* Zero out the segment's prototype PTEs, and link it with the control area */
1579  PointerPte = &NewSegment->ThePtes[0];
1580  RtlZeroMemory(NewSegment, sizeof(SEGMENT));
1581  NewSegment->PrototypePte = PointerPte;
1582  NewSegment->ControlArea = ControlArea;
1583 
1584  /* Save some extra accounting data for the segment as well */
1585  NewSegment->u1.CreatingProcess = PsGetCurrentProcess();
1586  NewSegment->SizeOfSegment = PteCount * PAGE_SIZE;
1587  NewSegment->TotalNumberOfPtes = PteCount;
1588  NewSegment->NonExtendedPtes = PteCount;
1589 
1590  /* The subsection's base address is the first Prototype PTE in the segment */
1591  Subsection->SubsectionBase = PointerPte;
1592 
1593  /* Start with an empty PTE, unless this is a commit operation */
1594  TempPte.u.Long = 0;
1595  if (AllocationAttributes & SEC_COMMIT)
1596  {
1597  /* In which case, write down the protection mask in the Prototype PTEs */
1598  TempPte.u.Soft.Protection = ProtectionMask;
1599 
1600  /* For accounting, also mark these pages as being committed */
1601  NewSegment->NumberOfCommittedPages = PteCount;
1602  }
1603 
1604  /* The template PTE itself for the segment should also have the mask set */
1605  NewSegment->SegmentPteTemplate.u.Soft.Protection = ProtectionMask;
1606 
1607  /* Write out the prototype PTEs, for now they're simply demand zero */
1608 #ifdef _WIN64
1609  RtlFillMemoryUlonglong(PointerPte, PteCount * sizeof(MMPTE), TempPte.u.Long);
1610 #else
1611  RtlFillMemoryUlong(PointerPte, PteCount * sizeof(MMPTE), TempPte.u.Long);
1612 #endif
1613  return STATUS_SUCCESS;
1614 }
#define PAGE_SHIFT
Definition: env_spec_w32.h:45
ULONG NumberOfCommittedPages
Definition: mmtypes.h:407
#define SEC_LARGE_PAGES
Definition: mmtypes.h:102
ULONGLONG SizeOfSegment
Definition: mmtypes.h:405
_In_ ACCESS_MASK _In_opt_ POBJECT_ATTRIBUTES _In_opt_ PLARGE_INTEGER _In_ ULONG _In_ ULONG AllocationAttributes
Definition: mmfuncs.h:360
ULONG NumberOfSectionReferences
Definition: mmtypes.h:515
ULONG NonExtendedPtes
Definition: mmtypes.h:403
ULONG PFN_COUNT
Definition: mmtypes.h:102
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
return STATUS_SUCCESS
Definition: btrfs.c:2664
PCONTROL_AREA ControlArea
Definition: mmtypes.h:563
MMPTE ThePtes[1]
Definition: mmtypes.h:422
union _CONTROL_AREA::@2304 u
#define MAXULONG_PTR
Definition: basetsd.h:102
ULONG TotalNumberOfPtes
Definition: mmtypes.h:402
struct _CONTROL_AREA * ControlArea
Definition: mmtypes.h:401
#define SEC_BASED
PEPROCESS CreatingProcess
Definition: mmtypes.h:414
#define SEC_COMMIT
Definition: mmtypes.h:99
#define SEC_RESERVE
Definition: nt_native.h:1323
union _SEGMENT::@2302 u1
#define PsGetCurrentProcess
Definition: psfuncs.h:17
#define STATUS_SECTION_TOO_BIG
Definition: ntstatus.h:286
ULONG64 Protection
Definition: mmtypes.h:88
_Inout_ PVOID Segment
Definition: exfuncs.h:893
#define RtlFillMemoryUlong(dst, len, val)
Definition: mkhive.h:49
HARDWARE_PTE_ARMV6 TempPte
Definition: winldr.c:75
#define PAGED_CODE()
Definition: video.h:57
#define ExAllocatePoolWithTag(hernya, size, tag)
Definition: env_spec_w32.h:350
struct _SUBSECTION * PSUBSECTION
union _SUBSECTION::@2306 u
struct _SEGMENT SEGMENT
#define PAGE_SIZE
Definition: env_spec_w32.h:49
ULONG_PTR Long
Definition: mmtypes.h:215
ULONG_PTR SIZE_T
Definition: typedefs.h:78
MMSUBSECTION_FLAGS SubsectionFlags
Definition: mmtypes.h:567
PSEGMENT Segment
Definition: mmtypes.h:513
ULONG NumberOfUserReferences
Definition: mmtypes.h:519
MMPTE_SOFTWARE Soft
Definition: mmtypes.h:219
struct _MMPTE MMPTE
_In_ ACCESS_MASK _In_opt_ POBJECT_ATTRIBUTES _In_opt_ PLARGE_INTEGER MaximumSize
Definition: mmfuncs.h:360
MMPTE SegmentPteTemplate
Definition: mmtypes.h:406
MMSECTION_FLAGS Flags
Definition: mmtypes.h:523
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:261
union _MMPTE::@2072 u
#define STATUS_INVALID_PARAMETER_4
Definition: ntstatus.h:464
PMMPTE PrototypePte
Definition: mmtypes.h:421
PMMPTE SubsectionBase
Definition: mmtypes.h:571
ULONG BeingCreated
Definition: mmtypes.h:456
NTSYSAPI VOID NTAPI RtlFillMemoryUlonglong(_Out_writes_bytes_all_(Length) PVOID Destination, _In_ SIZE_T Length, _In_ ULONGLONG Pattern)
ULONG PtesInSubsection
Definition: mmtypes.h:573
VOID NTAPI MiDeleteARM3Section ( PVOID  ObjectBody)

Definition at line 3244 of file section.c.

Referenced by MmpDeleteSection().

3245 {
3247  PCONTROL_AREA ControlArea;
3248  KIRQL OldIrql;
3249 
3250  SectionObject = (PSECTION)ObjectBody;
3251 
3252  if (SectionObject->u.Flags.Based == 1)
3253  {
3254  /* Remove the node from the global section address tree */
3256  MiRemoveNode(&SectionObject->Address, &MmSectionBasedRoot);
3258  }
3259 
3260  /* Lock the PFN database */
3262 
3263  ASSERT(SectionObject->Segment);
3264  ASSERT(SectionObject->Segment->ControlArea);
3265 
3266  ControlArea = SectionObject->Segment->ControlArea;
3267 
3268  /* Dereference */
3269  ControlArea->NumberOfSectionReferences--;
3270  ControlArea->NumberOfUserReferences--;
3271 
3272  ASSERT(ControlArea->u.Flags.BeingDeleted == 0);
3273 
3274  /* Check it. It will delete it if there is no more reference to it */
3275  MiCheckControlArea(ControlArea, OldIrql);
3276 }
_Must_inspect_result_ _Outptr_ PVOID * SectionObject
Definition: fsrtlfuncs.h:860
ULONG NumberOfSectionReferences
Definition: mmtypes.h:515
PSEGMENT Segment
Definition: mmtypes.h:813
VOID FASTCALL KeAcquireGuardedMutex(IN PKGUARDED_MUTEX GuardedMutex)
Definition: gmutex.c:42
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
KGUARDED_MUTEX MmSectionBasedMutex
Definition: section.c:110
MM_AVL_TABLE MmSectionBasedRoot
Definition: section.c:109
union _CONTROL_AREA::@2304 u
union _SECTION::@2320 u
struct _CONTROL_AREA * ControlArea
Definition: mmtypes.h:401
UCHAR KIRQL
Definition: env_spec_w32.h:591
struct _SECTION * PSECTION
MMSECTION_FLAGS Flags
Definition: mmtypes.h:818
_Requires_lock_held_ Interrupt _Releases_lock_ Interrupt _In_ _IRQL_restores_ KIRQL OldIrql
Definition: kefuncs.h:803
KIRQL FASTCALL KeAcquireQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber)
Definition: spinlock.c:108
VOID NTAPI MiRemoveNode(IN PMMADDRESS_NODE Node, IN PMM_AVL_TABLE Table)
Definition: vadnode.c:360
ULONG BeingDeleted
Definition: mmtypes.h:455
MMADDRESS_NODE Address
Definition: mmtypes.h:812
ULONG NumberOfUserReferences
Definition: mmtypes.h:519
VOID NTAPI MiCheckControlArea(IN PCONTROL_AREA ControlArea, IN KIRQL OldIrql)
Definition: section.c:728
VOID FASTCALL KeReleaseGuardedMutex(IN OUT PKGUARDED_MUTEX GuardedMutex)
Definition: gmutex.c:53
MMSECTION_FLAGS Flags
Definition: mmtypes.h:523
VOID NTAPI MiDereferenceControlArea ( IN PCONTROL_AREA  ControlArea)

Definition at line 763 of file section.c.

Referenced by MiMapViewInSystemSpace(), and MiMapViewOfDataSection().

764 {
765  KIRQL OldIrql;
766 
767  /* Lock the PFN database */
769 
770  /* Drop reference counts */
771  ControlArea->NumberOfMappedViews--;
772  ControlArea->NumberOfUserReferences--;
773 
774  /* Check if it's time to delete the CA. This releases the lock */
775  MiCheckControlArea(ControlArea, OldIrql);
776 }
UCHAR KIRQL
Definition: env_spec_w32.h:591
_Requires_lock_held_ Interrupt _Releases_lock_ Interrupt _In_ _IRQL_restores_ KIRQL OldIrql
Definition: kefuncs.h:803
KIRQL FASTCALL KeAcquireQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber)
Definition: spinlock.c:108
VOID NTAPI MiCheckControlArea(IN PCONTROL_AREA ControlArea, IN KIRQL OldIrql)
Definition: section.c:728
VOID NTAPI MiFillSystemPageDirectory ( IN PVOID  Base,
IN SIZE_T  NumberOfBytes 
)

Definition at line 476 of file section.c.

Referenced by MiMapViewInSystemSpace(), and MmGetPageTableForProcess().

478 {
479  PMMPDE PointerPde, LastPde, SystemMapPde;
480  MMPDE TempPde;
481  PFN_NUMBER PageFrameIndex, ParentPage;
482  KIRQL OldIrql;
483  PAGED_CODE();
484 
485  /* Find the PDEs needed for this mapping */
486  PointerPde = MiAddressToPde(Base);
487  LastPde = MiAddressToPde((PVOID)((ULONG_PTR)Base + NumberOfBytes - 1));
488 
489 #if (_MI_PAGING_LEVELS == 2)
490  /* Find the system double-mapped PDE that describes this mapping */
491  SystemMapPde = &MmSystemPagePtes[((ULONG_PTR)PointerPde & (SYSTEM_PD_SIZE - 1)) / sizeof(MMPTE)];
492 #else
493  /* We don't have a double mapping */
494  SystemMapPde = PointerPde;
495 #endif
496 
497  /* Use the PDE template and loop the PDEs */
498  TempPde = ValidKernelPde;
499  while (PointerPde <= LastPde)
500  {
501  /* Lock the PFN database */
503 
504  /* Check if we don't already have this PDE mapped */
505  if (SystemMapPde->u.Hard.Valid == 0)
506  {
507  /* Grab a page for it */
509  MI_SET_PROCESS2(PsGetCurrentProcess()->ImageFileName);
510  PageFrameIndex = MiRemoveZeroPage(MI_GET_NEXT_COLOR());
511  ASSERT(PageFrameIndex);
512  TempPde.u.Hard.PageFrameNumber = PageFrameIndex;
513 
514 #if (_MI_PAGING_LEVELS == 2)
515  ParentPage = MmSystemPageDirectory[(PointerPde - MiAddressToPde(NULL)) / PDE_COUNT];
516 #else
517  ParentPage = MiPdeToPpe(PointerPde)->u.Hard.PageFrameNumber;
518 #endif
519  /* Initialize its PFN entry, with the parent system page directory page table */
520  MiInitializePfnForOtherProcess(PageFrameIndex,
521  (PMMPTE)PointerPde,
522  ParentPage);
523 
524  /* Make the system PDE entry valid */
525  MI_WRITE_VALID_PDE(SystemMapPde, TempPde);
526 
527  /* The system PDE entry might be the PDE itself, so check for this */
528  if (PointerPde->u.Hard.Valid == 0)
529  {
530  /* It's different, so make the real PDE valid too */
531  MI_WRITE_VALID_PDE(PointerPde, TempPde);
532  }
533  }
534 
535  /* Release the lock and keep going with the next PDE */
537  SystemMapPde++;
538  PointerPde++;
539  }
540 }
DWORD *typedef PVOID
Definition: winlogon.h:52
#define MiAddressToPde(x)
Definition: mmx86.c:20
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
_In_opt_ ULONG Base
Definition: rtlfuncs.h:2327
#define MI_GET_NEXT_COLOR()
Definition: miarm.h:209
HARDWARE_PDE_ARMV6 TempPde
Definition: winldr.c:77
VOID NTAPI MiInitializePfnForOtherProcess(IN PFN_NUMBER PageFrameIndex, IN PVOID PteAddress, IN PFN_NUMBER PteFrame)
Definition: pfnlist.c:1280
PFN_NUMBER NTAPI MiRemoveZeroPage(IN ULONG Color)
Definition: pfnlist.c:531
uint32_t ULONG_PTR
Definition: typedefs.h:63
UCHAR KIRQL
Definition: env_spec_w32.h:591
#define PDE_COUNT
Definition: miarm.h:30
ULONG PFN_NUMBER
Definition: ke.h:8
#define MI_SET_PROCESS2(x)
Definition: mm.h:250
#define PsGetCurrentProcess
Definition: psfuncs.h:17
smooth NULL
Definition: ftsmooth.c:557
FORCEINLINE VOID MI_WRITE_VALID_PDE(IN PMMPDE PointerPde, IN MMPDE TempPde)
Definition: miarm.h:969
#define MI_SET_USAGE(x)
Definition: mm.h:249
PMMPDE MmSystemPagePtes
Definition: init.c:41
#define MiPdeToPpe(_Pde)
Definition: mm.h:221
ULONG64 Valid
Definition: mmtypes.h:150
VOID FASTCALL KeReleaseQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber, IN KIRQL OldIrql)
Definition: spinlock.c:154
#define PAGED_CODE()
Definition: video.h:57
_Requires_lock_held_ Interrupt _Releases_lock_ Interrupt _In_ _IRQL_restores_ KIRQL OldIrql
Definition: kefuncs.h:803
IN SIZE_T NumberOfBytes
Definition: ndis.h:3914
PFN_NUMBER MmSystemPageDirectory[PD_COUNT]
Definition: init.c:40
KIRQL FASTCALL KeAcquireQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber)
Definition: spinlock.c:108
MMPTE ValidKernelPde
Definition: init.c:30
MMPTE_HARDWARE Hard
Definition: mmtypes.h:217
#define SYSTEM_PD_SIZE
Definition: miarm.h:34
#define ULONG_PTR
Definition: config.h:101
ULONG64 PageFrameNumber
Definition: mmtypes.h:171
union _MMPTE::@2072 u
VOID NTAPI MiFlushTbAndCapture ( IN PMMVAD  FoundVad,
IN PMMPTE  PointerPte,
IN ULONG  ProtectionMask,
IN PMMPFN  Pfn1,
IN BOOLEAN  UpdateDirty 
)

Definition at line 1957 of file section.c.

Referenced by MiProtectVirtualMemory(), and MiSetProtectionOnSection().

1962 {
1963  MMPTE TempPte, PreviousPte;
1964  KIRQL OldIrql;
1965  BOOLEAN RebuildPte = FALSE;
1966 
1967  //
1968  // User for sanity checking later on
1969  //
1970  PreviousPte = *PointerPte;
1971 
1972  //
1973  // Build the PTE and acquire the PFN lock
1974  //
1975  MI_MAKE_HARDWARE_PTE_USER(&TempPte,
1976  PointerPte,
1977  ProtectionMask,
1978  PreviousPte.u.Hard.PageFrameNumber);
1980 
1981  //
1982  // We don't support I/O mappings in this path yet
1983  //
1984  ASSERT(Pfn1 != NULL);
1985  ASSERT(Pfn1->u3.e1.CacheAttribute != MiWriteCombined);
1986 
1987  //
1988  // Make sure new protection mask doesn't get in conflict and fix it if it does
1989  //
1990  if (Pfn1->u3.e1.CacheAttribute == MiCached)
1991  {
1992  //
1993  // This is a cached PFN
1994  //
1995  if (ProtectionMask & (MM_NOCACHE | MM_NOACCESS))
1996  {
1997  RebuildPte = TRUE;
1998  ProtectionMask &= ~(MM_NOCACHE | MM_NOACCESS);
1999  }
2000  }
2001  else if (Pfn1->u3.e1.CacheAttribute == MiNonCached)
2002  {
2003  //
2004  // This is a non-cached PFN
2005  //
2006  if ((ProtectionMask & (MM_NOCACHE | MM_NOACCESS)) != MM_NOCACHE)
2007  {
2008  RebuildPte = TRUE;
2009  ProtectionMask &= ~MM_NOACCESS;
2010  ProtectionMask |= MM_NOCACHE;
2011  }
2012  }
2013 
2014  if (RebuildPte)
2015  {
2016  MI_MAKE_HARDWARE_PTE_USER(&TempPte,
2017  PointerPte,
2018  ProtectionMask,
2019  PreviousPte.u.Hard.PageFrameNumber);
2020  }
2021 
2022  //
2023  // Write the new PTE, making sure we are only changing the bits
2024  //
2025  MI_UPDATE_VALID_PTE(PointerPte, TempPte);
2026 
2027  //
2028  // Flush the TLB
2029  //
2030  ASSERT(PreviousPte.u.Hard.Valid == 1);
2031  KeFlushCurrentTb();
2032  ASSERT(PreviousPte.u.Hard.Valid == 1);
2033 
2034  //
2035  // Windows updates the relevant PFN1 information, we currently don't.
2036  //
2037  if (UpdateDirty && PreviousPte.u.Hard.Dirty)
2038  {
2039  if (!Pfn1->u3.e1.Modified)
2040  {
2041  DPRINT1("FIXME: Mark PFN as dirty\n");
2042  }
2043  }
2044 
2045  //
2046  // Not supported in ARM3
2047  //
2048  ASSERT(FoundVad->u.VadFlags.VadType != VadWriteWatch);
2049 
2050  //
2051  // Release the PFN lock, we are done
2052  //
2054 }
#define TRUE
Definition: types.h:120
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
#define MM_NOACCESS
Definition: miarm.h:67
#define MM_NOCACHE
Definition: miarm.h:58
ULONG64 Dirty
Definition: mmtypes.h:164
UCHAR KIRQL
Definition: env_spec_w32.h:591
#define FALSE
Definition: types.h:117
smooth NULL
Definition: ftsmooth.c:557
unsigned char BOOLEAN
ULONG64 Valid
Definition: mmtypes.h:150
VOID FASTCALL KeReleaseQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber, IN KIRQL OldIrql)
Definition: spinlock.c:154
HARDWARE_PTE_ARMV6 TempPte
Definition: winldr.c:75
_Requires_lock_held_ Interrupt _Releases_lock_ Interrupt _In_ _IRQL_restores_ KIRQL OldIrql
Definition: kefuncs.h:803
KIRQL FASTCALL KeAcquireQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber)
Definition: spinlock.c:108
FORCEINLINE VOID MI_MAKE_HARDWARE_PTE_USER(IN PMMPTE NewPte, IN PMMPTE MappingPte, IN ULONG_PTR ProtectionMask, IN PFN_NUMBER PageFrameNumber)
Definition: miarm.h:785
MMPTE_HARDWARE Hard
Definition: mmtypes.h:217
#define DPRINT1
Definition: precomp.h:8
ULONG64 PageFrameNumber
Definition: mmtypes.h:171
union _MMPTE::@2072 u
FORCEINLINE VOID MI_UPDATE_VALID_PTE(IN PMMPTE PointerPte, IN MMPTE TempPte)
Definition: miarm.h:928
VOID NTAPI KeFlushCurrentTb(VOID)
Definition: cpu.c:332
NTSTATUS NTAPI MiGetFileObjectForSectionAddress ( IN PVOID  Address,
OUT PFILE_OBJECT FileObject 
)

Definition at line 1618 of file section.c.

1621 {
1622  PMMVAD Vad;
1623  PCONTROL_AREA ControlArea;
1624 
1625  /* Get the VAD */
1626  Vad = MiLocateAddress(Address);
1627  if (Vad == NULL)
1628  {
1629  /* Fail, the address does not exist */
1630  DPRINT1("Invalid address\n");
1631  return STATUS_INVALID_ADDRESS;
1632  }
1633 
1634  /* Check if this is a RosMm memory area */
1635  if (Vad->u.VadFlags.Spare != 0)
1636  {
1638  PROS_SECTION_OBJECT Section;
1639 
1640  /* Check if it's a section view (RosMm section) */
1641  if (MemoryArea->Type == MEMORY_AREA_SECTION_VIEW)
1642  {
1643  /* Get the section pointer to the SECTION_OBJECT */
1644  Section = MemoryArea->Data.SectionData.Section;
1645  *FileObject = Section->FileObject;
1646  }
1647  else
1648  {
1649  ASSERT(MemoryArea->Type == MEMORY_AREA_CACHE);
1650  DPRINT1("Address is a cache section!\n");
1651  return STATUS_SECTION_NOT_IMAGE;
1652  }
1653  }
1654  else
1655  {
1656  /* Make sure it's not a VM VAD */
1657  if (Vad->u.VadFlags.PrivateMemory == 1)
1658  {
1659  DPRINT1("Address is not a section\n");
1660  return STATUS_SECTION_NOT_IMAGE;
1661  }
1662 
1663  /* Get the control area */
1664  ControlArea = Vad->ControlArea;
1665  if (!(ControlArea) || !(ControlArea->u.Flags.Image))
1666  {
1667  DPRINT1("Address is not a section\n");
1668  return STATUS_SECTION_NOT_IMAGE;
1669  }
1670 
1671  /* Get the file object */
1672  *FileObject = ControlArea->FilePointer;
1673  }
1674 
1675  /* Return success */
1676  return STATUS_SUCCESS;
1677 }
PFILE_OBJECT FilePointer
Definition: mmtypes.h:525
PVOID ULONG Address
Definition: oprghdlr.h:14
union _MEMORY_AREA::@1561 Data
ULONG Type
Definition: mm.h:210
struct _MEMORY_AREA * PMEMORY_AREA
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
return STATUS_SUCCESS
Definition: btrfs.c:2664
union _CONTROL_AREA::@2304 u
MMVAD_FLAGS VadFlags
Definition: mmtypes.h:735
#define MEMORY_AREA_CACHE
Definition: mm.h:70
PCONTROL_AREA ControlArea
Definition: mmtypes.h:737
smooth NULL
Definition: ftsmooth.c:557
PMMVAD NTAPI MiLocateAddress(IN PVOID VirtualAddress)
Definition: vadnode.c:48
_In_ PFILE_OBJECT FileObject
Definition: classpnp.h:1229
#define MEMORY_AREA_SECTION_VIEW
Definition: mm.h:69
ULONG_PTR PrivateMemory
Definition: mmtypes.h:699
union _MMVAD::@2311 u
PFILE_OBJECT FileObject
Definition: mm.h:195
#define STATUS_SECTION_NOT_IMAGE
Definition: ntstatus.h:295
struct _MEMORY_AREA::@1561::@1562 SectionData
#define STATUS_INVALID_ADDRESS
Definition: ntstatus.h:543
#define DPRINT1
Definition: precomp.h:8
ULONG_PTR Spare
Definition: mmtypes.h:698
MMSECTION_FLAGS Flags
Definition: mmtypes.h:523
static PFILE_OBJECT MiGetFileObjectForVad ( _In_ PMMVAD  Vad)
static

Definition at line 1701 of file section.c.

Referenced by MmGetFileNameForAddress(), and NtAreMappedFilesTheSame().

1703 {
1704  PCONTROL_AREA ControlArea;
1706 
1707  /* Check if this is a RosMm memory area */
1708  if (Vad->u.VadFlags.Spare != 0)
1709  {
1711  PROS_SECTION_OBJECT Section;
1712 
1713  /* Check if it's a section view (RosMm section) */
1714  if (MemoryArea->Type == MEMORY_AREA_SECTION_VIEW)
1715  {
1716  /* Get the section pointer to the SECTION_OBJECT */
1717  Section = MemoryArea->Data.SectionData.Section;
1718  FileObject = Section->FileObject;
1719  }
1720  else
1721  {
1722  ASSERT(MemoryArea->Type == MEMORY_AREA_CACHE);
1723  DPRINT1("VAD is a cache section!\n");
1724  return NULL;
1725  }
1726  }
1727  else
1728  {
1729  /* Make sure it's not a VM VAD */
1730  if (Vad->u.VadFlags.PrivateMemory == 1)
1731  {
1732  DPRINT1("VAD is not a section\n");
1733  return NULL;
1734  }
1735 
1736  /* Get the control area */
1737  ControlArea = Vad->ControlArea;
1738  if ((ControlArea == NULL) || !ControlArea->u.Flags.Image)
1739  {
1740  DPRINT1("Address is not a section\n");
1741  return NULL;
1742  }
1743 
1744  /* Get the file object */
1745  FileObject = ControlArea->FilePointer;
1746  }
1747 
1748  /* Return the file object */
1749  return FileObject;
1750 }
PFILE_OBJECT FilePointer
Definition: mmtypes.h:525
union _MEMORY_AREA::@1561 Data
ULONG Type
Definition: mm.h:210
struct _MEMORY_AREA * PMEMORY_AREA
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
union _CONTROL_AREA::@2304 u
#define MEMORY_AREA_CACHE
Definition: mm.h:70
smooth NULL
Definition: ftsmooth.c:557
_In_ PFILE_OBJECT FileObject
Definition: classpnp.h:1229
#define MEMORY_AREA_SECTION_VIEW
Definition: mm.h:69
PFILE_OBJECT FileObject
Definition: mm.h:195
* PFILE_OBJECT
Definition: iotypes.h:1949
struct _MEMORY_AREA::@1561::@1562 SectionData
#define DPRINT1
Definition: precomp.h:8
MMSECTION_FLAGS Flags
Definition: mmtypes.h:523
BOOLEAN NTAPI MiInitializeSystemSpaceMap ( IN PMMSESSION InputSession  OPTIONAL)

Definition at line 240 of file section.c.

Referenced by MiBuildPagedPool(), and MiSessionCreateInternal().

241 {
242  SIZE_T AllocSize, BitmapSize, Size;
243  PVOID ViewStart;
244  PMMSESSION Session;
245 
246  /* Check if this a session or system space */
247  if (InputSession)
248  {
249  /* Use the input session */
250  Session = InputSession;
251  ViewStart = MiSessionViewStart;
252  Size = MmSessionViewSize;
253  }
254  else
255  {
256  /* Use the system space "session" */
257  Session = &MmSession;
258  ViewStart = MiSystemViewStart;
259  Size = MmSystemViewSize;
260  }
261 
262  /* Initialize the system space lock */
263  Session->SystemSpaceViewLockPointer = &Session->SystemSpaceViewLock;
265 
266  /* Set the start address */
267  Session->SystemSpaceViewStart = ViewStart;
268 
269  /* Create a bitmap to describe system space */
270  BitmapSize = sizeof(RTL_BITMAP) + ((((Size / MI_SYSTEM_VIEW_BUCKET_SIZE) + 31) / 32) * sizeof(ULONG));
272  BitmapSize,
273  TAG_MM);
274  ASSERT(Session->SystemSpaceBitMap);
276  (PULONG)(Session->SystemSpaceBitMap + 1),
278 
279  /* Set system space fully empty to begin with */
281 
282  /* Set default hash flags */
283  Session->SystemSpaceHashSize = 31;
284  Session->SystemSpaceHashKey = Session->SystemSpaceHashSize - 1;
285  Session->SystemSpaceHashEntries = 0;
286 
287  /* Calculate how much space for the hash views we'll need */
288  AllocSize = sizeof(MMVIEW) * Session->SystemSpaceHashSize;
289  ASSERT(AllocSize < PAGE_SIZE);
290 
291  /* Allocate and zero the view table */
292  Session->SystemSpaceViewTable = ExAllocatePoolWithTag(Session == &MmSession ?
293  NonPagedPool :
294  PagedPool,
295  AllocSize,
296  TAG_MM);
297  ASSERT(Session->SystemSpaceViewTable != NULL);
298  RtlZeroMemory(Session->SystemSpaceViewTable, AllocSize);
299 
300  /* Success */
301  return TRUE;
302 }
DWORD *typedef PVOID
Definition: winlogon.h:52
#define TRUE
Definition: types.h:120
NTSYSAPI void WINAPI RtlInitializeBitMap(PRTL_BITMAP, PULONG, ULONG)
struct _RTL_BITMAP RTL_BITMAP
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
PCHAR SystemSpaceViewStart
Definition: miarm.h:429
ULONG SystemSpaceHashEntries
Definition: miarm.h:432
KGUARDED_MUTEX SystemSpaceViewLock
Definition: miarm.h:427
#define TAG_MM
Definition: tag.h:136
ULONG MmSystemViewSize
Definition: init.c:39
ULONG MmSessionViewSize
Definition: init.c:35
PVOID MiSystemViewStart
Definition: init.c:38
smooth NULL
Definition: ftsmooth.c:557
PMMVIEW SystemSpaceViewTable
Definition: miarm.h:430
ULONG SystemSpaceHashKey
Definition: miarm.h:433
UINTN Size
Definition: acefiex.h:555
NTSYSAPI void WINAPI RtlClearAllBits(PRTL_BITMAP)
struct _MMVIEW MMVIEW
#define ExAllocatePoolWithTag(hernya, size, tag)
Definition: env_spec_w32.h:350
PKGUARDED_MUTEX SystemSpaceViewLockPointer
Definition: miarm.h:428
#define PAGE_SIZE
Definition: env_spec_w32.h:49
ULONG_PTR SIZE_T
Definition: typedefs.h:78
VOID FASTCALL KeInitializeGuardedMutex(OUT PKGUARDED_MUTEX GuardedMutex)
Definition: gmutex.c:31
PRTL_BITMAP SystemSpaceBitMap
Definition: miarm.h:435
PVOID MiSessionViewStart
Definition: init.c:30
#define MI_SYSTEM_VIEW_BUCKET_SIZE
Definition: miarm.h:238
unsigned int * PULONG
Definition: retypes.h:1
unsigned int ULONG
Definition: retypes.h:1
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:261
ULONG SystemSpaceHashSize
Definition: miarm.h:431
MMSESSION MmSession
Definition: section.c:107
PVOID NTAPI MiInsertInSystemSpace ( IN PMMSESSION  Session,
IN ULONG  Buckets,
IN PCONTROL_AREA  ControlArea 
)

Definition at line 306 of file section.c.

Referenced by MiMapViewInSystemSpace().

309 {
310  PVOID Base;
311  ULONG Entry, Hash, i, HashSize;
312  PMMVIEW OldTable;
313  PAGED_CODE();
314 
315  /* Stay within 4GB */
317 
318  /* Lock system space */
319  KeAcquireGuardedMutex(Session->SystemSpaceViewLockPointer);
320 
321  /* Check if we're going to exhaust hash entries */
322  if ((Session->SystemSpaceHashEntries + 8) > Session->SystemSpaceHashSize)
323  {
324  /* Double the hash size */
325  HashSize = Session->SystemSpaceHashSize * 2;
326 
327  /* Save the old table and allocate a new one */
328  OldTable = Session->SystemSpaceViewTable;
329  Session->SystemSpaceViewTable = ExAllocatePoolWithTag(Session ==
330  &MmSession ?
331  NonPagedPool :
332  PagedPool,
333  HashSize *
334  sizeof(MMVIEW),
335  TAG_MM);
336  if (!Session->SystemSpaceViewTable)
337  {
338  /* Failed to allocate a new table, keep the old one for now */
339  Session->SystemSpaceViewTable = OldTable;
340  }
341  else
342  {
343  /* Clear the new table and set the new ahsh and key */
344  RtlZeroMemory(Session->SystemSpaceViewTable, HashSize * sizeof(MMVIEW));
345  Session->SystemSpaceHashSize = HashSize;
346  Session->SystemSpaceHashKey = Session->SystemSpaceHashSize - 1;
347 
348  /* Loop the old table */
349  for (i = 0; i < Session->SystemSpaceHashSize / 2; i++)
350  {
351  /* Check if the entry was valid */
352  if (OldTable[i].Entry)
353  {
354  /* Re-hash the old entry and search for space in the new table */
355  Hash = (OldTable[i].Entry >> 16) % Session->SystemSpaceHashKey;
356  while (Session->SystemSpaceViewTable[Hash].Entry)
357  {
358  /* Loop back at the beginning if we had an overflow */
359  if (++Hash >= Session->SystemSpaceHashSize) Hash = 0;
360  }
361 
362  /* Write the old entry in the new table */
363  Session->SystemSpaceViewTable[Hash] = OldTable[i];
364  }
365  }
366 
367  /* Free the old table */
368  ExFreePool(OldTable);
369  }
370  }
371 
372  /* Check if we ran out */
373  if (Session->SystemSpaceHashEntries == Session->SystemSpaceHashSize)
374  {
375  DPRINT1("Ran out of system view hash entries\n");
376  KeReleaseGuardedMutex(Session->SystemSpaceViewLockPointer);
377  return NULL;
378  }
379 
380  /* Find space where to map this view */
381  i = RtlFindClearBitsAndSet(Session->SystemSpaceBitMap, Buckets, 0);
382  if (i == 0xFFFFFFFF)
383  {
384  /* Out of space, fail */
385  Session->BitmapFailures++;
386  DPRINT1("Out of system view space\n");
387  KeReleaseGuardedMutex(Session->SystemSpaceViewLockPointer);
388  return NULL;
389  }
390 
391  /* Compute the base address */
392  Base = (PVOID)((ULONG_PTR)Session->SystemSpaceViewStart + (i * MI_SYSTEM_VIEW_BUCKET_SIZE));
393 
394  /* Get the hash entry for this allocation */
395  Entry = ((ULONG_PTR)Base & ~(MI_SYSTEM_VIEW_BUCKET_SIZE - 1)) + Buckets;
396  Hash = (Entry >> 16) % Session->SystemSpaceHashKey;
397 
398  /* Loop hash entries until a free one is found */
399  while (Session->SystemSpaceViewTable[Hash].Entry)
400  {
401  /* Unless we overflow, in which case loop back at hash o */
402  if (++Hash >= Session->SystemSpaceHashSize) Hash = 0;
403  }
404 
405  /* Add this entry into the hash table */
406  Session->SystemSpaceViewTable[Hash].Entry = Entry;
407  Session->SystemSpaceViewTable[Hash].ControlArea = ControlArea;
408 
409  /* Hash entry found, increment total and return the base address */
410  Session->SystemSpaceHashEntries++;
411  KeReleaseGuardedMutex(Session->SystemSpaceViewLockPointer);
412  return Base;
413 }
DWORD *typedef PVOID
Definition: winlogon.h:52
static int Hash(const char *)
Definition: reader.c:2247
struct _Entry Entry
Definition: kefuncs.h:640
VOID FASTCALL KeAcquireGuardedMutex(IN PKGUARDED_MUTEX GuardedMutex)
Definition: gmutex.c:42
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
_In_opt_ ULONG Base
Definition: rtlfuncs.h:2327
uint32_t ULONG_PTR
Definition: typedefs.h:63
while(1)
Definition: macro.lex.yy.c:730
GLenum GLclampf GLint i
Definition: glfuncs.h:14
#define TAG_MM
Definition: tag.h:136
smooth NULL
Definition: ftsmooth.c:557
#define PAGED_CODE()
Definition: video.h:57
#define ExAllocatePoolWithTag(hernya, size, tag)
Definition: env_spec_w32.h:350
NTSYSAPI ULONG WINAPI RtlFindClearBitsAndSet(PRTL_BITMAP, ULONG, ULONG)
#define MI_SYSTEM_VIEW_BUCKET_SIZE
Definition: miarm.h:238
Definition: miarm.h:419
VOID FASTCALL KeReleaseGuardedMutex(IN OUT PKGUARDED_MUTEX GuardedMutex)
Definition: gmutex.c:53
#define DPRINT1
Definition: precomp.h:8
unsigned int ULONG
Definition: retypes.h:1
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:261
#define ULONG_PTR
Definition: config.h:101
ULONG_PTR Entry
Definition: miarm.h:421
#define ExFreePool(addr)
Definition: env_spec_w32.h:352
MMSESSION MmSession
Definition: section.c:107
BOOLEAN NTAPI MiIsProtectionCompatible ( IN ULONG  SectionPageProtection,
IN ULONG  NewSectionPageProtection 
)

Definition at line 117 of file section.c.

Referenced by MmMapViewOfArm3Section().

119 {
120  ULONG ProtectionMask, CompatibleMask;
121 
122  /* Calculate the protection mask and make sure it's valid */
124  if (ProtectionMask == MM_INVALID_PROTECTION)
125  {
126  DPRINT1("Invalid protection mask\n");
127  return FALSE;
128  }
129 
130  /* Calculate the compatible mask */
131  CompatibleMask = MmCompatibleProtectionMask[ProtectionMask & 0x7] |
133 
134  /* See if the mapping protection is compatible with the create protection */
135  return ((CompatibleMask | NewSectionPageProtection) == CompatibleMask);
136 }
#define PAGE_NOCACHE
Definition: nt_native.h:1311
#define MM_INVALID_PROTECTION
Definition: miarm.h:69
#define PAGE_GUARD
Definition: nt_native.h:1310
_In_ ACCESS_MASK _In_opt_ POBJECT_ATTRIBUTES _In_opt_ PLARGE_INTEGER _In_ ULONG SectionPageProtection
Definition: mmfuncs.h:360
#define FALSE
Definition: types.h:117
ULONG NTAPI MiMakeProtectionMask(IN ULONG Protect)
Definition: section.c:158
ULONG MmCompatibleProtectionMask[8]
Definition: section.c:84
#define PAGE_WRITECOMBINE
Definition: mmtypes.h:78
#define DPRINT1
Definition: precomp.h:8
unsigned int ULONG
Definition: retypes.h:1
VOID NTAPI MiLoadUserSymbols ( IN PCONTROL_AREA  ControlArea,
IN PVOID  BaseAddress,
IN PEPROCESS  Process 
)

Definition at line 1158 of file section.c.

1161 {
1162  NTSTATUS Status;
1164  PLIST_ENTRY NextEntry;
1166  PIMAGE_NT_HEADERS NtHeaders;
1167  PLDR_DATA_TABLE_ENTRY LdrEntry;
1168 
1169  FileName = &ControlArea->FilePointer->FileName;
1170  if (FileName->Length == 0)
1171  {
1172  return;
1173  }
1174 
1175  /* Acquire module list lock */
1178 
1179  /* Browse list to try to find current module */
1180  for (NextEntry = MmLoadedUserImageList.Flink;
1181  NextEntry != &MmLoadedUserImageList;
1182  NextEntry = NextEntry->Flink)
1183  {
1184  /* Get the entry */
1185  LdrEntry = CONTAINING_RECORD(NextEntry,
1187  InLoadOrderLinks);
1188 
1189  /* If already in the list, increase load count */
1190  if (LdrEntry->DllBase == BaseAddress)
1191  {
1192  ++LdrEntry->LoadCount;
1193  break;
1194  }
1195  }
1196 
1197  /* Not in the list, we'll add it */
1198  if (NextEntry == &MmLoadedUserImageList)
1199  {
1200  /* Allocate our element, taking to the name string and its null char */
1201  LdrEntry = ExAllocatePoolWithTag(NonPagedPool, FileName->Length + sizeof(UNICODE_NULL) + sizeof(*LdrEntry), 'bDmM');
1202  if (LdrEntry)
1203  {
1204  memset(LdrEntry, 0, FileName->Length + sizeof(UNICODE_NULL) + sizeof(*LdrEntry));
1205 
1206  _SEH2_TRY
1207  {
1208  /* Get image checksum and size */
1209  NtHeaders = RtlImageNtHeader(BaseAddress);
1210  if (NtHeaders)
1211  {
1212  LdrEntry->SizeOfImage = NtHeaders->OptionalHeader.SizeOfImage;
1213  LdrEntry->CheckSum = NtHeaders->OptionalHeader.CheckSum;
1214  }
1215  }
1217  {
1218  ExFreePoolWithTag(LdrEntry, 'bDmM');
1219  _SEH2_YIELD(return);
1220  }
1221  _SEH2_END;
1222 
1223  /* Fill all the details */
1224  LdrEntry->DllBase = BaseAddress;
1225  LdrEntry->FullDllName.Buffer = (PVOID)((ULONG_PTR)LdrEntry + sizeof(*LdrEntry));
1226  LdrEntry->FullDllName.Length = FileName->Length;
1227  LdrEntry->FullDllName.MaximumLength = FileName->Length + sizeof(UNICODE_NULL);
1228  memcpy(LdrEntry->FullDllName.Buffer, FileName->Buffer, FileName->Length);
1229  LdrEntry->FullDllName.Buffer[LdrEntry->FullDllName.Length / sizeof(WCHAR)] = UNICODE_NULL;
1230  LdrEntry->LoadCount = 1;
1231 
1232  /* Insert! */
1234  }
1235  }
1236 
1237  /* Release locks */
1240 
1241  /* Load symbols */
1242  Status = RtlUnicodeStringToAnsiString(&FileNameA, FileName, TRUE);
1243  if (NT_SUCCESS(Status))
1244  {
1245  DbgLoadImageSymbols(&FileNameA, BaseAddress, (ULONG_PTR)Process->UniqueProcessId);
1246  RtlFreeAnsiString(&FileNameA);
1247  }
1248 }
DWORD *typedef PVOID
Definition: winlogon.h:52
#define TRUE
Definition: types.h:120
USHORT MaximumLength
Definition: env_spec_w32.h:370
FORCEINLINE VOID InsertHeadList(_Inout_ PLIST_ENTRY ListHead, _Inout_ __drv_aliasesMem PLIST_ENTRY Entry)
Definition: rtlfuncs.h:201
ULONG SizeOfImage
Definition: ldrtypes.h:141
#define WCHAR
Definition: msvc.h:43
IMAGE_OPTIONAL_HEADER32 OptionalHeader
Definition: ntddk_ex.h:184
uint32_t ULONG_PTR
Definition: typedefs.h:63
ERESOURCE PsLoadedModuleResource
Definition: sysldr.c:37
BOOLEAN NTAPI ExAcquireResourceExclusiveLite(IN PERESOURCE Resource, IN BOOLEAN Wait)
Definition: resource.c:770
PVOID DllBase
Definition: btrfs_drv.h:1714
#define UNICODE_NULL
#define _SEH2_END
Definition: pseh2_64.h:7
#define EXCEPTION_EXECUTE_HANDLER
Definition: excpt.h:85
struct _FileName FileName
NTSYSAPI NTSTATUS NTAPI RtlUnicodeStringToAnsiString(PANSI_STRING DestinationString, PUNICODE_STRING SourceString, BOOLEAN AllocateDestinationString)
struct _LIST_ENTRY * Flink
Definition: typedefs.h:119
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID * BaseAddress
Definition: mmfuncs.h:404
#define _SEH2_YIELD(STMT_)
Definition: pseh2_64.h:8
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:24
ULONG CheckSum
Definition: btrfs_drv.h:1720
NTSYSAPI VOID NTAPI RtlFreeAnsiString(PANSI_STRING AnsiString)
VOID FASTCALL ExReleaseResourceLite(IN PERESOURCE Resource)
Definition: resource.c:1817
LIST_ENTRY MmLoadedUserImageList
Definition: sysldr.c:35
#define ExAllocatePoolWithTag(hernya, size, tag)
Definition: env_spec_w32.h:350
#define KeEnterCriticalRegion()
Definition: ke_x.h:83
Definition: btrfs_drv.h:1710
#define memcpy(s1, s2, n)
Definition: mkisofs.h:878
Definition: typedefs.h:117
Status
Definition: gdiplustypes.h:24
LIST_ENTRY InLoadOrderLinks
Definition: ldrtypes.h:136
LONG NTSTATUS
Definition: DriverTester.h:11
#define KeLeaveCriticalRegion()
Definition: ke_x.h:114
#define _SEH2_TRY
Definition: pseh2_64.h:5
UNICODE_STRING FullDllName
Definition: btrfs_drv.h:1716
VOID NTAPI DbgLoadImageSymbols(_In_ PSTRING Name, _In_ PVOID Base, _In_ ULONG_PTR ProcessId)
#define RtlImageNtHeader
Definition: compat.h:457
_Must_inspect_result_ _In_ PLARGE_INTEGER _In_ PLARGE_INTEGER _In_ ULONG _In_ PFILE_OBJECT _In_ PVOID Process
Definition: fsrtlfuncs.h:219
#define CONTAINING_RECORD(address, type, field)
Definition: typedefs.h:259
#define _SEH2_EXCEPT(...)
Definition: pseh2_64.h:6
#define ExFreePoolWithTag(_P, _T)
Definition: module.h:1097
#define memset(x, y, z)
Definition: compat.h:39
static const CHAR FileNameA[]
USHORT LoadCount
Definition: ntddk_ex.h:212
PSUBSECTION NTAPI MiLocateSubsection ( IN PMMVAD  Vad,
IN ULONG_PTR  Vpn 
)

Definition at line 570 of file section.c.

Referenced by MiDeleteVirtualAddresses().

572 {
573  PSUBSECTION Subsection;
574  PCONTROL_AREA ControlArea;
575  ULONG_PTR PteOffset;
576 
577  /* Get the control area */
578  ControlArea = Vad->ControlArea;
579  ASSERT(ControlArea->u.Flags.Rom == 0);
580  ASSERT(ControlArea->u.Flags.Image == 0);
581  ASSERT(ControlArea->u.Flags.GlobalOnlyPerSession == 0);
582 
583  /* Get the subsection */
584  Subsection = (PSUBSECTION)(ControlArea + 1);
585 
586  /* We only support single-subsection segments */
587  ASSERT(Subsection->SubsectionBase != NULL);
588  ASSERT(Vad->FirstPrototypePte >= Subsection->SubsectionBase);
589  ASSERT(Vad->FirstPrototypePte < &Subsection->SubsectionBase[Subsection->PtesInSubsection]);
590 
591  /* Compute the PTE offset */
592  PteOffset = Vpn - Vad->StartingVpn;
593  PteOffset += Vad->FirstPrototypePte - Subsection->SubsectionBase;
594 
595  /* Again, we only support single-subsection segments */
596  ASSERT(PteOffset < 0xF0000000);
597  ASSERT(PteOffset < Subsection->PtesInSubsection);
598 
599  /* Return the subsection */
600  return Subsection;
601 }
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
union _CONTROL_AREA::@2304 u
uint32_t ULONG_PTR
Definition: typedefs.h:63
smooth NULL
Definition: ftsmooth.c:557
struct _SUBSECTION * PSUBSECTION
ULONG GlobalOnlyPerSession
Definition: mmtypes.h:483
MMSECTION_FLAGS Flags
Definition: mmtypes.h:523
PMMPTE SubsectionBase
Definition: mmtypes.h:571
ULONG PtesInSubsection
Definition: mmtypes.h:573
ULONG NTAPI MiMakeProtectionMask ( IN ULONG  Protect)

Definition at line 158 of file section.c.

Referenced by MiArm3GetCorrectFileAccessMask(), MiIsProtectionCompatible(), MiProtectVirtualMemory(), MiSetProtectionOnSection(), MmCreateArm3Section(), MmCreateSection(), MmInsertMemoryArea(), MmMapViewOfArm3Section(), NtAllocateVirtualMemory(), and NtMapViewOfSection().

159 {
160  ULONG Mask1, Mask2, ProtectMask;
161 
162  /* PAGE_EXECUTE_WRITECOMBINE is theoretically the maximum */
163  if (Protect >= (PAGE_WRITECOMBINE * 2)) return MM_INVALID_PROTECTION;
164 
165  /*
166  * Windows API protection mask can be understood as two bitfields, differing
167  * by whether or not execute rights are being requested
168  */
169  Mask1 = Protect & 0xF;
170  Mask2 = (Protect >> 4) & 0xF;
171 
172  /* Check which field is there */
173  if (!Mask1)
174  {
175  /* Mask2 must be there, use it to determine the PTE protection */
176  if (!Mask2) return MM_INVALID_PROTECTION;
177  ProtectMask = MmUserProtectionToMask2[Mask2];
178  }
179  else
180  {
181  /* Mask2 should not be there, use Mask1 to determine the PTE mask */
182  if (Mask2) return MM_INVALID_PROTECTION;
183  ProtectMask = MmUserProtectionToMask1[Mask1];
184  }
185 
186  /* Make sure the final mask is a valid one */
187  if (ProtectMask == MM_INVALID_PROTECTION) return MM_INVALID_PROTECTION;
188 
189  /* Check for PAGE_GUARD option */
190  if (Protect & PAGE_GUARD)
191  {
192  /* It's not valid on no-access, nocache, or writecombine pages */
193  if ((ProtectMask == MM_NOACCESS) ||
195  {
196  /* Fail such requests */
197  return MM_INVALID_PROTECTION;
198  }
199 
200  /* This actually turns on guard page in this scenario! */
201  ProtectMask |= MM_GUARDPAGE;
202  }
203 
204  /* Check for nocache option */
205  if (Protect & PAGE_NOCACHE)
206  {
207  /* The earlier check should've eliminated this possibility */
208  ASSERT((Protect & PAGE_GUARD) == 0);
209 
210  /* Check for no-access page or write combine page */
211  if ((ProtectMask == MM_NOACCESS) || (Protect & PAGE_WRITECOMBINE))
212  {
213  /* Such a request is invalid */
214  return MM_INVALID_PROTECTION;
215  }
216 
217  /* Add the PTE flag */
218  ProtectMask |= MM_NOCACHE;
219  }
220 
221  /* Check for write combine option */
223  {
224  /* The two earlier scenarios should've caught this */
225  ASSERT((Protect & (PAGE_GUARD | PAGE_NOACCESS)) == 0);
226 
227  /* Don't allow on no-access pages */
228  if (ProtectMask == MM_NOACCESS) return MM_INVALID_PROTECTION;
229 
230  /* This actually turns on write-combine in this scenario! */
231  ProtectMask |= MM_NOACCESS;
232  }
233 
234  /* Return the final MM PTE protection mask */
235  return ProtectMask;
236 }
#define PAGE_NOCACHE
Definition: nt_native.h:1311
#define MM_INVALID_PROTECTION
Definition: miarm.h:69
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
CHAR MmUserProtectionToMask1[16]
Definition: section.c:44
#define PAGE_GUARD
Definition: nt_native.h:1310
#define MM_NOACCESS
Definition: miarm.h:67
#define MM_NOCACHE
Definition: miarm.h:58
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID _In_ ULONG_PTR _In_ SIZE_T _Inout_opt_ PLARGE_INTEGER _Inout_ PSIZE_T _In_ SECTION_INHERIT _In_ ULONG _In_ ULONG Protect
Definition: zwfuncs.h:214
#define PAGE_NOACCESS
Definition: nt_native.h:1302
CHAR MmUserProtectionToMask2[16]
Definition: section.c:64
#define MM_GUARDPAGE
Definition: miarm.h:59
#define PAGE_WRITECOMBINE
Definition: mmtypes.h:78
unsigned int ULONG
Definition: retypes.h:1
NTSTATUS NTAPI MiMapViewInSystemSpace ( IN PVOID  Section,
IN PMMSESSION  Session,
OUT PVOID MappedBase,
IN OUT PSIZE_T  ViewSize 
)

Definition at line 1052 of file section.c.

Referenced by MmMapViewInSessionSpace(), and MmMapViewInSystemSpace().

1056 {
1057  PVOID Base;
1058  PCONTROL_AREA ControlArea;
1059  ULONG Buckets, SectionSize;
1060  NTSTATUS Status;
1061  PAGED_CODE();
1062 
1063  /* Get the control area, check for any flags ARM3 doesn't yet support */
1064  ControlArea = ((PSECTION)Section)->Segment->ControlArea;
1065  ASSERT(ControlArea->u.Flags.Image == 0);
1066  ASSERT(ControlArea->FilePointer == NULL);
1067  ASSERT(ControlArea->u.Flags.GlobalOnlyPerSession == 0);
1068  ASSERT(ControlArea->u.Flags.Rom == 0);
1069  ASSERT(ControlArea->u.Flags.WasPurged == 0);
1070 
1071  /* Increase the reference and map count on the control area, no purges yet */
1072  Status = MiCheckPurgeAndUpMapCount(ControlArea, FALSE);
1073  ASSERT(NT_SUCCESS(Status));
1074 
1075  /* Get the section size at creation time */
1076  SectionSize = ((PSECTION)Section)->SizeOfSection.LowPart;
1077 
1078  /* If the caller didn't specify a view size, assume the whole section */
1079  if (!(*ViewSize)) *ViewSize = SectionSize;
1080 
1081  /* Check if the caller wanted a larger section than the view */
1082  if (*ViewSize > SectionSize)
1083  {
1084  /* Fail */
1085  DPRINT1("View is too large\n");
1086  MiDereferenceControlArea(ControlArea);
1087  return STATUS_INVALID_VIEW_SIZE;
1088  }
1089 
1090  /* Get the number of 64K buckets required for this mapping */
1091  Buckets = (ULONG)(*ViewSize / MI_SYSTEM_VIEW_BUCKET_SIZE);
1092  if (*ViewSize & (MI_SYSTEM_VIEW_BUCKET_SIZE - 1)) Buckets++;
1093 
1094  /* Check if the view is more than 4GB large */
1095  if (Buckets >= MI_SYSTEM_VIEW_BUCKET_SIZE)
1096  {
1097  /* Fail */
1098  DPRINT1("View is too large\n");
1099  MiDereferenceControlArea(ControlArea);
1100  return STATUS_INVALID_VIEW_SIZE;
1101  }
1102 
1103  /* Insert this view into system space and get a base address for it */
1104  Base = MiInsertInSystemSpace(Session, Buckets, ControlArea);
1105  if (!Base)
1106  {
1107  /* Fail */
1108  DPRINT1("Out of system space\n");
1109  MiDereferenceControlArea(ControlArea);
1110  return STATUS_NO_MEMORY;
1111  }
1112 
1113  /* What's the underlying session? */
1114  if (Session == &MmSession)
1115  {
1116  /* Create the PDEs needed for this mapping, and double-map them if needed */
1118  Status = STATUS_SUCCESS;
1119  }
1120  else
1121  {
1122  /* Create the PDEs needed for this mapping */
1123  Status = MiSessionCommitPageTables(Base,
1124  (PVOID)((ULONG_PTR)Base +
1125  Buckets * MI_SYSTEM_VIEW_BUCKET_SIZE));
1126  ASSERT(NT_SUCCESS(Status));
1127  }
1128 
1129  /* Create the actual prototype PTEs for this mapping */
1130  Status = MiAddMappedPtes(MiAddressToPte(Base),
1132  ControlArea);
1133  ASSERT(NT_SUCCESS(Status));
1134 
1135  /* Return the base adress of the mapping and success */
1136  *MappedBase = Base;
1137  return STATUS_SUCCESS;
1138 }
DWORD *typedef PVOID
Definition: winlogon.h:52
PFILE_OBJECT FilePointer
Definition: mmtypes.h:525
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
return STATUS_SUCCESS
Definition: btrfs.c:2664
_In_opt_ ULONG Base
Definition: rtlfuncs.h:2327
union _CONTROL_AREA::@2304 u
NTSTATUS NTAPI MiSessionCommitPageTables(IN PVOID StartVa, IN PVOID EndVa)
Definition: section.c:935
struct _CONTROL_AREA * ControlArea
Definition: mmtypes.h:401
uint32_t ULONG_PTR
Definition: typedefs.h:63
NTSTATUS NTAPI MiCheckPurgeAndUpMapCount(IN PCONTROL_AREA ControlArea, IN BOOLEAN FailIfSystemViews)
Definition: section.c:544
VOID NTAPI MiDereferenceControlArea(IN PCONTROL_AREA ControlArea)
Definition: section.c:763
NTSTATUS NTAPI MiAddMappedPtes(IN PMMPTE FirstPte, IN PFN_NUMBER PteCount, IN PCONTROL_AREA ControlArea)
Definition: section.c:417
#define MiAddressToPte(x)
Definition: mmx86.c:19
#define FALSE
Definition: types.h:117
smooth NULL
Definition: ftsmooth.c:557
struct _SECTION * PSECTION
PVOID NTAPI MiInsertInSystemSpace(IN PMMSESSION Session, IN ULONG Buckets, IN PCONTROL_AREA ControlArea)
Definition: section.c:306
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:24
VOID NTAPI MiFillSystemPageDirectory(IN PVOID Base, IN SIZE_T NumberOfBytes)
Definition: section.c:476
#define PAGED_CODE()
Definition: video.h:57
#define BYTES_TO_PAGES(Size)
ULONG GlobalOnlyPerSession
Definition: mmtypes.h:483
Status
Definition: gdiplustypes.h:24
#define STATUS_INVALID_VIEW_SIZE
Definition: ntstatus.h:254
LONG NTSTATUS
Definition: DriverTester.h:11
#define MI_SYSTEM_VIEW_BUCKET_SIZE
Definition: miarm.h:238
#define STATUS_NO_MEMORY
Definition: ntstatus.h:246
PSEGMENT Segment
Definition: mmtypes.h:513
#define DPRINT1
Definition: precomp.h:8
_Must_inspect_result_ _Outptr_result_bytebuffer_ ViewSize PVOID * MappedBase
Definition: mmfuncs.h:493
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID _In_ ULONG_PTR _In_ SIZE_T _Inout_opt_ PLARGE_INTEGER _Inout_ PSIZE_T ViewSize
Definition: mmfuncs.h:404
ULONG WasPurged
Definition: mmtypes.h:470
MMSECTION_FLAGS Flags
Definition: mmtypes.h:523
unsigned int ULONG
Definition: retypes.h:1
MMSESSION MmSession
Definition: section.c:107
NTSTATUS NTAPI MiMapViewOfDataSection ( IN PCONTROL_AREA  ControlArea,
IN PEPROCESS  Process,
IN PVOID BaseAddress,
IN PLARGE_INTEGER  SectionOffset,
IN PSIZE_T  ViewSize,
IN PSECTION  Section,
IN SECTION_INHERIT  InheritDisposition,
IN ULONG  ProtectionMask,
IN SIZE_T  CommitSize,
IN ULONG_PTR  ZeroBits,
IN ULONG  AllocationType 
)

Definition at line 1252 of file section.c.

Referenced by MmMapViewOfArm3Section().

1263 {
1264  PMMVAD_LONG Vad;
1265  ULONG_PTR StartAddress;
1266  ULONG_PTR ViewSizeInPages;
1267  PSUBSECTION Subsection;
1268  PSEGMENT Segment;
1269  PFN_NUMBER PteOffset;
1270  NTSTATUS Status;
1271  ULONG QuotaCharge = 0, QuotaExcess = 0;
1272  PMMPTE PointerPte, LastPte;
1273  MMPTE TempPte;
1274  ULONG Granularity = MM_VIRTMEM_GRANULARITY;
1275 
1276  DPRINT("Mapping ARM3 data section\n");
1277 
1278  /* Get the segment for this section */
1279  Segment = ControlArea->Segment;
1280 
1281 #ifdef _M_IX86
1282  /* ALlow being less restrictive on x86. */
1284  Granularity = PAGE_SIZE;
1285 #endif
1286 
1287  /* One can only reserve a file-based mapping, not shared memory! */
1288  if ((AllocationType & MEM_RESERVE) && !(ControlArea->FilePointer))
1289  {
1291  }
1292 
1293  /* First, increase the map count. No purging is supported yet */
1294  Status = MiCheckPurgeAndUpMapCount(ControlArea, FALSE);
1295  if (!NT_SUCCESS(Status)) return Status;
1296 
1297  /* Check if the caller specified the view size */
1298  if (!(*ViewSize))
1299  {
1300  /* The caller did not, so pick a 64K aligned view size based on the offset */
1301  SectionOffset->LowPart &= ~(_64K - 1);
1302  *ViewSize = (SIZE_T)(Section->SizeOfSection.QuadPart - SectionOffset->QuadPart);
1303  }
1304  else
1305  {
1306  /* A size was specified, align it to a 64K boundary */
1307  *ViewSize += SectionOffset->LowPart & (_64K - 1);
1308 
1309  /* Align the offset as well to make this an aligned map */
1310  SectionOffset->LowPart &= ~((ULONG)_64K - 1);
1311  }
1312 
1313  /* We must be dealing with a 64KB aligned offset. This is a Windows ASSERT */
1314  ASSERT((SectionOffset->LowPart & ((ULONG)_64K - 1)) == 0);
1315 
1316  /* It's illegal to try to map more than overflows a LONG_PTR */
1317  if (*ViewSize >= MAXLONG_PTR)
1318  {
1319  MiDereferenceControlArea(ControlArea);
1320  return STATUS_INVALID_VIEW_SIZE;
1321  }
1322 
1323  /* Windows ASSERTs for this flag */
1324  ASSERT(ControlArea->u.Flags.GlobalOnlyPerSession == 0);
1325 
1326  /* Get the subsection. We don't support LARGE_CONTROL_AREA in ARM3 */
1327  ASSERT(ControlArea->u.Flags.Rom == 0);
1328  Subsection = (PSUBSECTION)(ControlArea + 1);
1329 
1330  /* Sections with extended segments are not supported in ARM3 */
1331  ASSERT(Segment->SegmentFlags.TotalNumberOfPtes4132 == 0);
1332 
1333  /* Within this section, figure out which PTEs will describe the view */
1334  PteOffset = (PFN_NUMBER)(SectionOffset->QuadPart >> PAGE_SHIFT);
1335 
1336  /* The offset must be in this segment's PTE chunk and it must be valid. Windows ASSERTs */
1337  ASSERT(PteOffset < Segment->TotalNumberOfPtes);
1338  ASSERT(((SectionOffset->QuadPart + *ViewSize + PAGE_SIZE - 1) >> PAGE_SHIFT) >= PteOffset);
1339 
1340  /* In ARM3, only one subsection is used for now. It must contain these PTEs */
1341  ASSERT(PteOffset < Subsection->PtesInSubsection);
1342 
1343  /* In ARM3, only page-file backed sections (shared memory) are supported now */
1344  ASSERT(ControlArea->FilePointer == NULL);
1345 
1346  /* Windows ASSERTs for this too -- there must be a subsection base address */
1347  ASSERT(Subsection->SubsectionBase != NULL);
1348 
1349  /* Compute how much commit space the segment will take */
1350  if ((CommitSize) && (Segment->NumberOfCommittedPages < Segment->TotalNumberOfPtes))
1351  {
1352  /* Charge for the maximum pages */
1353  QuotaCharge = BYTES_TO_PAGES(CommitSize);
1354  }
1355 
1356  /* ARM3 does not currently support large pages */
1357  ASSERT(Segment->SegmentFlags.LargePages == 0);
1358 
1359  /* Calculate how many pages the region spans */
1360  ViewSizeInPages = BYTES_TO_PAGES(*ViewSize);
1361 
1362  /* A VAD can now be allocated. Do so and zero it out */
1363  /* FIXME: we are allocating a LONG VAD for ReactOS compatibility only */
1364  ASSERT((AllocationType & MEM_RESERVE) == 0); /* ARM3 does not support this */
1365  Vad = ExAllocatePoolWithTag(NonPagedPool, sizeof(MMVAD_LONG), 'ldaV');
1366  if (!Vad)
1367  {
1368  MiDereferenceControlArea(ControlArea);
1370  }
1371 
1372  RtlZeroMemory(Vad, sizeof(MMVAD_LONG));
1373  Vad->u4.Banked = (PVOID)0xDEADBABE;
1374 
1375  /* Write all the data required in the VAD for handling a fault */
1376  Vad->ControlArea = ControlArea;
1377  Vad->u.VadFlags.CommitCharge = 0;
1378  Vad->u.VadFlags.Protection = ProtectionMask;
1381  if ((AllocationType & SEC_NO_CHANGE) || (Section->u.Flags.NoChange))
1382  {
1383  /* This isn't really implemented yet, but handle setting the flag */
1384  Vad->u.VadFlags.NoChange = 1;
1385  Vad->u2.VadFlags2.SecNoChange = 1;
1386  }
1387 
1388  /* Finally, write down the first and last prototype PTE */
1389  Vad->FirstPrototypePte = &Subsection->SubsectionBase[PteOffset];
1390  PteOffset += ViewSizeInPages - 1;
1391  ASSERT(PteOffset < Subsection->PtesInSubsection);
1392  Vad->LastContiguousPte = &Subsection->SubsectionBase[PteOffset];
1393 
1394  /* Make sure the prototype PTE ranges make sense, this is a Windows ASSERT */
1396 
1397  /* FIXME: Should setup VAD bitmap */
1398  Status = STATUS_SUCCESS;
1399 
1400  /* Check if anything was committed */
1401  if (QuotaCharge)
1402  {
1403  /* Set the start and end PTE addresses, and pick the template PTE */
1404  PointerPte = Vad->FirstPrototypePte;
1405  LastPte = PointerPte + BYTES_TO_PAGES(CommitSize);
1406  TempPte = Segment->SegmentPteTemplate;
1407 
1408  /* Acquire the commit lock and loop all prototype PTEs to be committed */
1410  while (PointerPte < LastPte)
1411  {
1412  /* Make sure the PTE is already invalid */
1413  if (PointerPte->u.Long == 0)
1414  {
1415  /* And write the invalid PTE */
1416  MI_WRITE_INVALID_PTE(PointerPte, TempPte);
1417  }
1418  else
1419  {
1420  /* The PTE is valid, so skip it */
1421  QuotaExcess++;
1422  }
1423 
1424  /* Move to the next PTE */
1425  PointerPte++;
1426  }
1427 
1428  /* Now check how many pages exactly we committed, and update accounting */
1429  ASSERT(QuotaCharge >= QuotaExcess);
1430  QuotaCharge -= QuotaExcess;
1431  Segment->NumberOfCommittedPages += QuotaCharge;
1432  ASSERT(Segment->NumberOfCommittedPages <= Segment->TotalNumberOfPtes);
1433 
1434  /* Now that we're done, release the lock */
1436  }
1437 
1438  /* Is it SEC_BASED, or did the caller manually specify an address? */
1439  if (*BaseAddress != NULL)
1440  {
1441  /* Just align what the caller gave us */
1442  StartAddress = ALIGN_DOWN_BY((ULONG_PTR)*BaseAddress, Granularity);
1443  }
1444  else if (Section->Address.StartingVpn != 0)
1445  {
1446  /* It is a SEC_BASED mapping, use the address that was generated */
1447  StartAddress = Section->Address.StartingVpn + SectionOffset->LowPart;
1448  }
1449  else
1450  {
1451  StartAddress = 0;
1452  }
1453 
1454  /* Insert the VAD */
1455  Status = MiInsertVadEx((PMMVAD)Vad,
1456  &StartAddress,
1457  ViewSizeInPages * PAGE_SIZE,
1459  Granularity,
1460  AllocationType);
1461  if (!NT_SUCCESS(Status))
1462  {
1463  return Status;
1464  }
1465 
1466  /* Windows stores this for accounting purposes, do so as well */
1467  if (!Segment->u2.FirstMappedVa) Segment->u2.FirstMappedVa = (PVOID)StartAddress;
1468 
1469  /* Finally, let the caller know where, and for what size, the view was mapped */
1470  *ViewSize = ViewSizeInPages * PAGE_SIZE;
1471  *BaseAddress = (PVOID)StartAddress;
1472  DPRINT("Start and region: 0x%p, 0x%p\n", *BaseAddress, *ViewSize);
1473  return STATUS_SUCCESS;
1474 }
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID _In_ ULONG_PTR _In_ SIZE_T _Inout_opt_ PLARGE_INTEGER _Inout_ PSIZE_T _In_ SECTION_INHERIT InheritDisposition
Definition: mmfuncs.h:404
DWORD *typedef PVOID
Definition: winlogon.h:52
union _MMVAD_LONG::@2315 u2
union _MMVAD_LONG::@2317 u4
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID _In_ ULONG_PTR ZeroBits
Definition: mmfuncs.h:404
#define PAGE_SHIFT
Definition: env_spec_w32.h:45
#define MM_VIRTMEM_GRANULARITY
Definition: mm.h:76
ULONG NumberOfCommittedPages
Definition: mmtypes.h:407
#define STATUS_INSUFFICIENT_RESOURCES
Definition: udferr_usr.h:158
VOID FASTCALL KeAcquireGuardedMutex(IN PKGUARDED_MUTEX GuardedMutex)
Definition: gmutex.c:42
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
return STATUS_SUCCESS
Definition: btrfs.c:2664
PMMPTE LastContiguousPte
Definition: mmtypes.h:768
MMVAD_FLAGS VadFlags
Definition: mmtypes.h:764
ULONG_PTR CommitCharge
Definition: mmtypes.h:692
#define STATUS_INVALID_PARAMETER_9
Definition: ntstatus.h:469
ULONG LargePages
Definition: mmtypes.h:395
#define MAXULONG_PTR
Definition: basetsd.h:102
SEGMENT_FLAGS SegmentFlags
Definition: mmtypes.h:409
ULONG SecNoChange
Definition: mmtypes.h:708
PCONTROL_AREA ControlArea
Definition: mmtypes.h:766
ULONG_PTR Protection
Definition: mmtypes.h:697
ULONG TotalNumberOfPtes
Definition: mmtypes.h:402
PVOID FirstMappedVa
Definition: mmtypes.h:419
ULONG_PTR NoChange
Definition: mmtypes.h:694
uint32_t ULONG_PTR
Definition: typedefs.h:63
NTSTATUS NTAPI MiCheckPurgeAndUpMapCount(IN PCONTROL_AREA ControlArea, IN BOOLEAN FailIfSystemViews)
Definition: section.c:544
VOID NTAPI MiDereferenceControlArea(IN PCONTROL_AREA ControlArea)
Definition: section.c:763
ULONG PFN_NUMBER
Definition: ke.h:8
#define FALSE
Definition: types.h:117
#define MEM_RESERVE
Definition: nt_native.h:1314
smooth NULL
Definition: ftsmooth.c:557
PVOID Banked
Definition: mmtypes.h:781
void DPRINT(...)
Definition: polytest.cpp:61
union _MMVAD_LONG::@2314 u
_Inout_ PVOID Segment
Definition: exfuncs.h:893
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID _In_ ULONG_PTR _In_ SIZE_T _Inout_opt_ PLARGE_INTEGER SectionOffset
Definition: mmfuncs.h:404
ULONG FileOffset
Definition: mmtypes.h:707
#define MEM_DOS_LIM
Definition: mmtypes.h:89
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID * BaseAddress
Definition: mmfuncs.h:404
NTSTATUS NTAPI MiInsertVadEx(_Inout_ PMMVAD Vad, _In_ ULONG_PTR *BaseAddress, _In_ SIZE_T ViewSize, _In_ ULONG_PTR HighestAddress, _In_ ULONG_PTR Alignment, _In_ ULONG AllocationType)
Definition: vadnode.c:204
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:24
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID _In_ ULONG_PTR _In_ SIZE_T CommitSize
Definition: mmfuncs.h:404
MMVAD_FLAGS2 VadFlags2
Definition: mmtypes.h:772
HARDWARE_PTE_ARMV6 TempPte
Definition: winldr.c:75
#define ExAllocatePoolWithTag(hernya, size, tag)
Definition: env_spec_w32.h:350
struct _SUBSECTION * PSUBSECTION
#define BYTES_TO_PAGES(Size)
ULONG TotalNumberOfPtes4132
Definition: mmtypes.h:393
ULONG LowPart
Definition: typedefs.h:104
#define PAGE_SIZE
Definition: env_spec_w32.h:49
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID _In_ ULONG_PTR _In_ SIZE_T _Inout_opt_ PLARGE_INTEGER _Inout_ PSIZE_T _In_ SECTION_INHERIT _In_ ULONG AllocationType
Definition: mmfuncs.h:404
#define _64K
Definition: miarm.h:17
KGUARDED_MUTEX MmSectionCommitMutex
Definition: section.c:108
ULONG Inherit
Definition: mmtypes.h:714
Status
Definition: gdiplustypes.h:24
ULONG_PTR Long
Definition: mmtypes.h:215
#define ALIGN_DOWN_BY(size, align)
ULONG_PTR SIZE_T
Definition: typedefs.h:78
FORCEINLINE VOID MI_WRITE_INVALID_PTE(IN PMMPTE PointerPte, IN MMPTE InvalidPte)
Definition: miarm.h:943
#define STATUS_INVALID_VIEW_SIZE
Definition: ntstatus.h:254
LONG NTSTATUS
Definition: DriverTester.h:11
VOID FASTCALL KeReleaseGuardedMutex(IN OUT PKGUARDED_MUTEX GuardedMutex)
Definition: gmutex.c:53
union _SEGMENT::@2303 u2
MMPTE SegmentPteTemplate
Definition: mmtypes.h:406
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID _In_ ULONG_PTR _In_ SIZE_T _Inout_opt_ PLARGE_INTEGER _Inout_ PSIZE_T ViewSize
Definition: mmfuncs.h:404
unsigned int ULONG
Definition: retypes.h:1
PMMPTE FirstPrototypePte
Definition: mmtypes.h:767
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:261
union _MMPTE::@2072 u
#define SEC_NO_CHANGE
Definition: mmtypes.h:94
PMMPTE SubsectionBase
Definition: mmtypes.h:571
#define MAXLONG_PTR
Definition: basetsd.h:103
LONGLONG QuadPart
Definition: typedefs.h:112
NTSTATUS NTAPI MiQueryMemorySectionName ( IN HANDLE  ProcessHandle,
IN PVOID  BaseAddress,
OUT PVOID  MemoryInformation,
IN SIZE_T  MemoryInformationLength,
OUT PSIZE_T  ReturnLength 
)

Definition at line 1892 of file section.c.

Referenced by NtQueryVirtualMemory().

1897 {
1899  NTSTATUS Status;
1900  WCHAR ModuleFileNameBuffer[MAX_PATH] = {0};
1902  PMEMORY_SECTION_NAME SectionName = NULL;
1904 
1907  NULL,
1908  PreviousMode,
1909  (PVOID*)(&Process),
1910  NULL);
1911 
1912  if (!NT_SUCCESS(Status))
1913  {
1914  DPRINT("MiQueryMemorySectionName: ObReferenceObjectByHandle returned %x\n",Status);
1915  return Status;
1916  }
1917 
1918  RtlInitEmptyUnicodeString(&ModuleFileName, ModuleFileNameBuffer, sizeof(ModuleFileNameBuffer));
1919  Status = MmGetFileNameForAddress(BaseAddress, &ModuleFileName);
1920 
1921  if (NT_SUCCESS(Status))
1922  {
1923  SectionName = MemoryInformation;
1924  if (PreviousMode != KernelMode)
1925  {
1926  _SEH2_TRY
1927  {
1928  RtlInitUnicodeString(&SectionName->SectionFileName, SectionName->NameBuffer);
1929  SectionName->SectionFileName.MaximumLength = (USHORT)MemoryInformationLength;
1930  RtlCopyUnicodeString(&SectionName->SectionFileName, &ModuleFileName);
1931 
1932  if (ReturnLength) *ReturnLength = ModuleFileName.Length;
1933 
1934  }
1936  {
1937  Status = _SEH2_GetExceptionCode();
1938  }
1939  _SEH2_END;
1940  }
1941  else
1942  {
1943  RtlInitUnicodeString(&SectionName->SectionFileName, SectionName->NameBuffer);
1944  SectionName->SectionFileName.MaximumLength = (USHORT)MemoryInformationLength;
1945  RtlCopyUnicodeString(&SectionName->SectionFileName, &ModuleFileName);
1946 
1947  if (ReturnLength) *ReturnLength = ModuleFileName.Length;
1948 
1949  }
1950  }
1951  ObDereferenceObject(Process);
1952  return Status;
1953 }
DWORD *typedef PVOID
Definition: winlogon.h:52
IN CINT OUT PVOID IN ULONG OUT PULONG ReturnLength
Definition: dumpinfo.c:39
NTSTATUS NTAPI MmGetFileNameForAddress(IN PVOID Address, OUT PUNICODE_STRING ModuleName)
Definition: section.c:1831
USHORT MaximumLength
Definition: env_spec_w32.h:370
__wchar_t WCHAR
Definition: xmlstorage.h:180
KPROCESSOR_MODE NTAPI ExGetPreviousMode(VOID)
Definition: sysinfo.c:2740
VOID NTAPI ObDereferenceObject(IN PVOID Object)
Definition: obref.c:267
NTSYSAPI VOID NTAPI RtlCopyUnicodeString(PUNICODE_STRING DestinationString, PUNICODE_STRING SourceString)
#define PROCESS_QUERY_INFORMATION
Definition: pstypes.h:159
NTSTATUS NTAPI ObReferenceObjectByHandle(IN HANDLE Handle, IN ACCESS_MASK DesiredAccess, IN POBJECT_TYPE ObjectType, IN KPROCESSOR_MODE AccessMode, OUT PVOID *Object, OUT POBJECT_HANDLE_INFORMATION HandleInformation OPTIONAL)
Definition: obref.c:388
#define _SEH2_END
Definition: pseh2_64.h:7
TCHAR ModuleFileName[MAX_PATH+1]
Definition: rundll32.c:55
#define EXCEPTION_EXECUTE_HANDLER
Definition: excpt.h:85
smooth NULL
Definition: ftsmooth.c:557
void DPRINT(...)
Definition: polytest.cpp:61
_In_ KPROCESSOR_MODE PreviousMode
Definition: sefuncs.h:103
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID * BaseAddress
Definition: mmfuncs.h:404
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:24
#define MAX_PATH
Definition: compat.h:26
CCHAR KPROCESSOR_MODE
Definition: ketypes.h:7
UNICODE_STRING SectionFileName
Definition: mmtypes.h:317
Status
Definition: gdiplustypes.h:24
LONG NTSTATUS
Definition: DriverTester.h:11
unsigned short USHORT
Definition: pedump.c:61
#define _SEH2_TRY
Definition: pseh2_64.h:5
_Must_inspect_result_ _In_ PLARGE_INTEGER _In_ PLARGE_INTEGER _In_ ULONG _In_ PFILE_OBJECT _In_ PVOID Process
Definition: fsrtlfuncs.h:219
NTSYSAPI VOID NTAPI RtlInitUnicodeString(PUNICODE_STRING DestinationString, PCWSTR SourceString)
#define _SEH2_EXCEPT(...)
Definition: pseh2_64.h:6
#define _SEH2_GetExceptionCode()
Definition: pseh2_64.h:12
_In_ HANDLE ProcessHandle
Definition: mmfuncs.h:403
WCHAR NameBuffer[ANYSIZE_ARRAY]
Definition: mmtypes.h:318
ULONG NTAPI MiRemoveFromSystemSpace ( IN PMMSESSION  Session,
IN PVOID  Base,
OUT PCONTROL_AREA ControlArea 
)

Definition at line 2332 of file section.c.

Referenced by MiUnmapViewInSystemSpace().

2335 {
2336  ULONG Hash, Size, Count = 0;
2337  ULONG_PTR Entry;
2338  PAGED_CODE();
2339 
2340  /* Compute the hash for this entry and loop trying to find it */
2341  Entry = (ULONG_PTR)Base >> 16;
2342  Hash = Entry % Session->SystemSpaceHashKey;
2343  while ((Session->SystemSpaceViewTable[Hash].Entry >> 16) != Entry)
2344  {
2345  /* Check if we overflew past the end of the hash table */
2346  if (++Hash >= Session->SystemSpaceHashSize)
2347  {
2348  /* Reset the hash to zero and keep searching from the bottom */
2349  Hash = 0;
2350  if (++Count == 2)
2351  {
2352  /* But if we overflew twice, then this is not a real mapping */
2353  KeBugCheckEx(DRIVER_UNMAPPING_INVALID_VIEW,
2354  (ULONG_PTR)Base,
2355  1,
2356  0,
2357  0);
2358  }
2359  }
2360  }
2361 
2362  /* One less entry */
2363  Session->SystemSpaceHashEntries--;
2364 
2365  /* Extract the size and clear the entry */
2366  Size = Session->SystemSpaceViewTable[Hash].Entry & 0xFFFF;
2367  Session->SystemSpaceViewTable[Hash].Entry = 0;
2368 
2369  /* Return the control area and the size */
2370  *ControlArea = Session->SystemSpaceViewTable[Hash].ControlArea;
2371  return Size;
2372 }
static int Hash(const char *)
Definition: reader.c:2247
struct _Entry Entry
Definition: kefuncs.h:640
_In_opt_ ULONG Base
Definition: rtlfuncs.h:2327
_Inout_ __drv_aliasesMem PSLIST_ENTRY _Inout_ PSLIST_ENTRY _In_ ULONG Count
Definition: exfuncs.h:1015
uint32_t ULONG_PTR
Definition: typedefs.h:63
UINTN Size
Definition: acefiex.h:555
#define PAGED_CODE()
Definition: video.h:57
unsigned int ULONG
Definition: retypes.h:1
#define ULONG_PTR
Definition: config.h:101
VOID NTAPI KeBugCheckEx(_In_ ULONG BugCheckCode, _In_ ULONG_PTR BugCheckParameter1, _In_ ULONG_PTR BugCheckParameter2, _In_ ULONG_PTR BugCheckParameter3, _In_ ULONG_PTR BugCheckParameter4)
Definition: rtlcompat.c:90
VOID NTAPI MiRemoveMappedPtes ( IN PVOID  BaseAddress,
IN ULONG  NumberOfPtes,
IN PCONTROL_AREA  ControlArea,
IN PMMSUPPORT  Ws 
)

Definition at line 2230 of file section.c.

Referenced by MiUnmapViewInSystemSpace().

2234 {
2235  PMMPTE PointerPte, ProtoPte;//, FirstPte;
2236  PMMPDE PointerPde, SystemMapPde;
2237  PMMPFN Pfn1, Pfn2;
2238  MMPTE PteContents;
2239  KIRQL OldIrql;
2240  DPRINT("Removing mapped view at: 0x%p\n", BaseAddress);
2241 
2242  ASSERT(Ws == NULL);
2243 
2244  /* Get the PTE and loop each one */
2245  PointerPte = MiAddressToPte(BaseAddress);
2246  //FirstPte = PointerPte;
2247  while (NumberOfPtes)
2248  {
2249  /* Check if the PTE is already valid */
2250  PteContents = *PointerPte;
2251  if (PteContents.u.Hard.Valid == 1)
2252  {
2253  /* Get the PFN entry */
2254  Pfn1 = MiGetPfnEntry(PFN_FROM_PTE(&PteContents));
2255 
2256  /* Get the PTE */
2257  PointerPde = MiPteToPde(PointerPte);
2258 
2259  /* Lock the PFN database and make sure this isn't a mapped file */
2261  ASSERT(((Pfn1->u3.e1.PrototypePte) && (Pfn1->OriginalPte.u.Soft.Prototype)) == 0);
2262 
2263  /* Mark the page as modified accordingly */
2264  if (MI_IS_PAGE_DIRTY(&PteContents))
2265  Pfn1->u3.e1.Modified = 1;
2266 
2267  /* Was the PDE invalid */
2268  if (PointerPde->u.Long == 0)
2269  {
2270 #if (_MI_PAGING_LEVELS == 2)
2271  /* Find the system double-mapped PDE that describes this mapping */
2272  SystemMapPde = &MmSystemPagePtes[((ULONG_PTR)PointerPde & (SYSTEM_PD_SIZE - 1)) / sizeof(MMPTE)];
2273 
2274  /* Make it valid */
2275  ASSERT(SystemMapPde->u.Hard.Valid == 1);
2276  MI_WRITE_VALID_PDE(PointerPde, *SystemMapPde);
2277 #else
2278  DBG_UNREFERENCED_LOCAL_VARIABLE(SystemMapPde);
2279  ASSERT(FALSE);
2280 #endif
2281  }
2282 
2283  /* Dereference the PDE and the PTE */
2284  Pfn2 = MiGetPfnEntry(PFN_FROM_PTE(PointerPde));
2285  MiDecrementShareCount(Pfn2, PFN_FROM_PTE(PointerPde));
2287  MiDecrementShareCount(Pfn1, PFN_FROM_PTE(&PteContents));
2288 
2289  /* Release the PFN lock */
2291  }
2292  else
2293  {
2294  /* Windows ASSERT */
2295  ASSERT((PteContents.u.Long == 0) || (PteContents.u.Soft.Prototype == 1));
2296 
2297  /* Check if this is a prototype pointer PTE */
2298  if (PteContents.u.Soft.Prototype == 1)
2299  {
2300  /* Get the prototype PTE */
2301  ProtoPte = MiProtoPteToPte(&PteContents);
2302 
2303  /* We don't support anything else atm */
2304  ASSERT(ProtoPte->u.Long == 0);
2305  }
2306  }
2307 
2308  /* Make the PTE into a zero PTE */
2309  PointerPte->u.Long = 0;
2310 
2311  /* Move to the next PTE */
2312  PointerPte++;
2313  NumberOfPtes--;
2314  }
2315 
2316  /* Flush the TLB */
2317  KeFlushCurrentTb();
2318 
2319  /* Acquire the PFN lock */
2321 
2322  /* Decrement the accounting counters */
2323  ControlArea->NumberOfUserReferences--;
2324  ControlArea->NumberOfMappedViews--;
2325 
2326  /* Check if we should destroy the CA and release the lock */
2327  MiCheckControlArea(ControlArea, OldIrql);
2328 }
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
USHORT Modified
Definition: mm.h:288
USHORT PrototypePte
Definition: mm.h:291
UCHAR KIRQL
Definition: env_spec_w32.h:591
MMPFNENTRY e1
Definition: mm.h:325
union _MMPFN::@1566 u3
#define MiAddressToPte(x)
Definition: mmx86.c:19
#define FALSE
Definition: types.h:117
smooth NULL
Definition: ftsmooth.c:557
#define MiProtoPteToPte(x)
Definition: mm.h:234
void DPRINT(...)
Definition: polytest.cpp:61
VOID NTAPI MiDecrementShareCount(IN PMMPFN Pfn1, IN PFN_NUMBER PageFrameIndex)
Definition: pfnlist.c:1133
FORCEINLINE VOID MI_WRITE_VALID_PDE(IN PMMPDE PointerPde, IN MMPDE TempPde)
Definition: miarm.h:969
PMMPDE MmSystemPagePtes
Definition: init.c:41
#define DBG_UNREFERENCED_LOCAL_VARIABLE(L)
Definition: ntbasedef.h:318
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID * BaseAddress
Definition: mmfuncs.h:404
ULONG64 Valid
Definition: mmtypes.h:150
VOID FASTCALL KeReleaseQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber, IN KIRQL OldIrql)
Definition: spinlock.c:154
_Requires_lock_held_ Interrupt _Releases_lock_ Interrupt _In_ _IRQL_restores_ KIRQL OldIrql
Definition: kefuncs.h:803
Definition: mm.h:301
ULONG64 Prototype
Definition: mmtypes.h:89
KIRQL FASTCALL KeAcquireQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber)
Definition: spinlock.c:108
FORCEINLINE PMMPFN MiGetPfnEntry(IN PFN_NUMBER Pfn)
Definition: mm.h:873
ULONG_PTR Long
Definition: mmtypes.h:215
MMPTE_HARDWARE Hard
Definition: mmtypes.h:217
#define SYSTEM_PD_SIZE
Definition: miarm.h:34
#define MiPteToPde(_Pte)
Definition: mm.h:220
MMPTE_SOFTWARE Soft
Definition: mmtypes.h:219
MMPTE OriginalPte
Definition: mm.h:335
VOID NTAPI MiCheckControlArea(IN PCONTROL_AREA ControlArea, IN KIRQL OldIrql)
Definition: section.c:728
#define MI_IS_PAGE_DIRTY(x)
Definition: mm.h:101
#define ULONG_PTR
Definition: config.h:101
union _MMPTE::@2072 u
#define PFN_FROM_PTE(v)
Definition: mm.h:82
VOID NTAPI KeFlushCurrentTb(VOID)
Definition: cpu.c:332
VOID NTAPI MiRemoveMappedView ( IN PEPROCESS  CurrentProcess,
IN PMMVAD  Vad 
)

Definition at line 780 of file section.c.

Referenced by MiUnmapViewOfSection(), and MmCleanProcessAddressSpace().

782 {
783  KIRQL OldIrql;
784  PCONTROL_AREA ControlArea;
785  PETHREAD CurrentThread = PsGetCurrentThread();
786 
787  /* Get the control area */
788  ControlArea = Vad->ControlArea;
789 
790  /* We only support non-extendable, non-image, pagefile-backed regular sections */
791  ASSERT(Vad->u.VadFlags.VadType == VadNone);
792  ASSERT(Vad->u2.VadFlags2.ExtendableFile == FALSE);
793  ASSERT(ControlArea);
794  ASSERT(ControlArea->FilePointer == NULL);
795 
796  /* Delete the actual virtual memory pages */
797  MiDeleteVirtualAddresses(Vad->StartingVpn << PAGE_SHIFT,
798  (Vad->EndingVpn << PAGE_SHIFT) | (PAGE_SIZE - 1),
799  Vad);
800 
801  /* Release the working set */
803 
804  /* Lock the PFN database */
806 
807  /* Remove references */
808  ControlArea->NumberOfMappedViews--;
809  ControlArea->NumberOfUserReferences--;
810 
811  /* Check if it should be destroyed */
812  MiCheckControlArea(ControlArea, OldIrql);
813 }
#define PAGE_SHIFT
Definition: env_spec_w32.h:45
PFILE_OBJECT FilePointer
Definition: mmtypes.h:525
FORCEINLINE VOID MiUnlockProcessWorkingSetUnsafe(IN PEPROCESS Process, IN PETHREAD Thread)
Definition: miarm.h:1177
#define PsGetCurrentThread()
Definition: env_spec_w32.h:81
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
UCHAR KIRQL
Definition: env_spec_w32.h:591
#define FALSE
Definition: types.h:117
smooth NULL
Definition: ftsmooth.c:557
ULONG CurrentProcess
Definition: shell.c:125
_Requires_lock_held_ Interrupt _Releases_lock_ Interrupt _In_ _IRQL_restores_ KIRQL OldIrql
Definition: kefuncs.h:803
#define PAGE_SIZE
Definition: env_spec_w32.h:49
ULONG NumberOfMappedViews
Definition: mmtypes.h:517
KIRQL FASTCALL KeAcquireQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber)
Definition: spinlock.c:108
VOID NTAPI MiDeleteVirtualAddresses(IN ULONG_PTR Va, IN ULONG_PTR EndingAddress, IN PMMVAD Vad)
Definition: virtual.c:540
ULONG NumberOfUserReferences
Definition: mmtypes.h:519
VOID NTAPI MiCheckControlArea(IN PCONTROL_AREA ControlArea, IN KIRQL OldIrql)
Definition: section.c:728
VOID NTAPI MiSegmentDelete ( IN PSEGMENT  Segment)

Definition at line 605 of file section.c.

Referenced by MiCheckControlArea().

606 {
607  PCONTROL_AREA ControlArea;
608  SEGMENT_FLAGS SegmentFlags;
609  PSUBSECTION Subsection;
610  PMMPTE PointerPte, LastPte, PteForProto;
611  PMMPFN Pfn1;
612  PFN_NUMBER PageFrameIndex;
613  MMPTE TempPte;
614  KIRQL OldIrql;
615 
616  /* Capture data */
617  SegmentFlags = Segment->SegmentFlags;
618  ControlArea = Segment->ControlArea;
619 
620  /* Make sure control area is on the right delete path */
621  ASSERT(ControlArea->u.Flags.BeingDeleted == 1);
622  ASSERT(ControlArea->WritableUserReferences == 0);
623 
624  /* These things are not supported yet */
625  ASSERT(ControlArea->DereferenceList.Flink == NULL);
626  ASSERT(!(ControlArea->u.Flags.Image) && !(ControlArea->u.Flags.File));
627  ASSERT(ControlArea->u.Flags.GlobalOnlyPerSession == 0);
628  ASSERT(ControlArea->u.Flags.Rom == 0);
629 
630  /* Get the subsection and PTEs for this segment */
631  Subsection = (PSUBSECTION)(ControlArea + 1);
632  PointerPte = Subsection->SubsectionBase;
633  LastPte = PointerPte + Segment->NonExtendedPtes;
634 
635  /* Lock the PFN database */
637 
638  /* Check if the master PTE is invalid */
639  PteForProto = MiAddressToPte(PointerPte);
640  if (!PteForProto->u.Hard.Valid)
641  {
642  /* Fault it in */
643  MiMakeSystemAddressValidPfn(PointerPte, OldIrql);
644  }
645 
646  /* Loop all the segment PTEs */
647  while (PointerPte < LastPte)
648  {
649  /* Check if it's time to switch master PTEs if we passed a PDE boundary */
650  if (!((ULONG_PTR)PointerPte & (PD_SIZE - 1)) &&
651  (PointerPte != Subsection->SubsectionBase))
652  {
653  /* Check if the master PTE is invalid */
654  PteForProto = MiAddressToPte(PointerPte);
655  if (!PteForProto->u.Hard.Valid)
656  {
657  /* Fault it in */
658  MiMakeSystemAddressValidPfn(PointerPte, OldIrql);
659  }
660  }
661 
662  /* This should be a prototype PTE */
663  TempPte = *PointerPte;
664  ASSERT(SegmentFlags.LargePages == 0);
665  ASSERT(TempPte.u.Hard.Valid == 0);
666 
667  /* See if we should clean things up */
668  if (!(ControlArea->u.Flags.Image) && !(ControlArea->u.Flags.File))
669  {
670  /*
671  * This is a section backed by the pagefile. Now that it doesn't exist anymore,
672  * we can give everything back to the system.
673  */
674  ASSERT(TempPte.u.Soft.Prototype == 0);
675 
676  if (TempPte.u.Soft.Transition == 1)
677  {
678  /* We can give the page back for other use */
679  DPRINT("Releasing page for transition PTE %p\n", PointerPte);
680  PageFrameIndex = PFN_FROM_PTE(&TempPte);
681  Pfn1 = MI_PFN_ELEMENT(PageFrameIndex);
682 
683  /* As this is a paged-backed section, nobody should reference it anymore (no cache or whatever) */
684  ASSERT(Pfn1->u3.ReferenceCount == 0);
685 
686  /* And it should be in standby or modified list */
688 
689  /* Unlink it and put it back in free list */
690  MiUnlinkPageFromList(Pfn1);
691 
692  /* Temporarily mark this as active and make it free again */
694  MI_SET_PFN_DELETED(Pfn1);
695 
696  MiInsertPageInFreeList(PageFrameIndex);
697  }
698  else if (TempPte.u.Soft.PageFileHigh != 0)
699  {
700  /* Should not happen for now */
701  ASSERT(FALSE);
702  }
703  }
704  else
705  {
706  /* unsupported for now */
707  ASSERT(FALSE);
708 
709  /* File-backed section must have prototype PTEs */
710  ASSERT(TempPte.u.Soft.Prototype == 1);
711  }
712 
713  /* Zero the PTE and keep going */
714  PointerPte->u.Long = 0;
715  PointerPte++;
716  }
717 
718  /* Release the PFN lock */
720 
721  /* Free the structures */
722  ExFreePool(ControlArea);
724 }
ULONG NTAPI MiMakeSystemAddressValidPfn(IN PVOID VirtualAddress, IN KIRQL OldIrql)
Definition: virtual.c:257
VOID NTAPI MiInsertPageInFreeList(IN PFN_NUMBER PageFrameIndex)
Definition: pfnlist.c:604
VOID NTAPI MiUnlinkPageFromList(IN PMMPFN Pfn)
Definition: pfnlist.c:264
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
ULONG LargePages
Definition: mmtypes.h:395
union _CONTROL_AREA::@2304 u
USHORT ReferenceCount
Definition: mm.h:324
USHORT PageLocation
Definition: mm.h:293
uint32_t ULONG_PTR
Definition: typedefs.h:63
UCHAR KIRQL
Definition: env_spec_w32.h:591
MMPFNENTRY e1
Definition: mm.h:325
union _MMPFN::@1566 u3
#define MiAddressToPte(x)
Definition: mmx86.c:19
ULONG PFN_NUMBER
Definition: ke.h:8
#define FALSE
Definition: types.h:117
smooth NULL
Definition: ftsmooth.c:557
void DPRINT(...)
Definition: polytest.cpp:61
_Inout_ PVOID Segment
Definition: exfuncs.h:893
LIST_ENTRY DereferenceList
Definition: mmtypes.h:514
#define PD_SIZE
Definition: miarm.h:26
struct _LIST_ENTRY * Flink
Definition: typedefs.h:119
ULONG64 Valid
Definition: mmtypes.h:150
VOID FASTCALL KeReleaseQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber, IN KIRQL OldIrql)
Definition: spinlock.c:154
HARDWARE_PTE_ARMV6 TempPte
Definition: winldr.c:75
struct _SUBSECTION * PSUBSECTION
FORCEINLINE PMMPFN MI_PFN_ELEMENT(IN PFN_NUMBER Pfn)
Definition: miarm.h:1391
_Requires_lock_held_ Interrupt _Releases_lock_ Interrupt _In_ _IRQL_restores_ KIRQL OldIrql
Definition: kefuncs.h:803
ULONG64 PageFileHigh
Definition: mmtypes.h:93
Definition: mm.h:301
ULONG GlobalOnlyPerSession
Definition: mmtypes.h:483
ULONG64 Prototype
Definition: mmtypes.h:89
KIRQL FASTCALL KeAcquireQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber)
Definition: spinlock.c:108
ULONG_PTR Long
Definition: mmtypes.h:215
MMPTE_HARDWARE Hard
Definition: mmtypes.h:217
#define MI_SET_PFN_DELETED(x)
Definition: miarm.h:161
ULONG64 Transition
Definition: mmtypes.h:90
ULONG BeingDeleted
Definition: mmtypes.h:455
ULONG WritableUserReferences
Definition: mmtypes.h:529
MMPTE_SOFTWARE Soft
Definition: mmtypes.h:219
MMSECTION_FLAGS Flags
Definition: mmtypes.h:523
union _MMPTE::@2072 u
#define PFN_FROM_PTE(v)
Definition: mm.h:82
PMMPTE SubsectionBase
Definition: mmtypes.h:571
#define ExFreePool(addr)
Definition: env_spec_w32.h:352
NTSTATUS NTAPI MiSessionCommitPageTables ( IN PVOID  StartVa,
IN PVOID  EndVa 
)

Definition at line 935 of file section.c.

Referenced by MiMapViewInSystemSpace().

937 {
938  KIRQL OldIrql;
939  ULONG Color, Index;
940  PMMPDE StartPde, EndPde;
942  PMMPFN Pfn1;
943  PFN_NUMBER PageCount = 0, ActualPages = 0, PageFrameNumber;
944 
945  /* Windows sanity checks */
946  ASSERT(StartVa >= (PVOID)MmSessionBase);
947  ASSERT(EndVa < (PVOID)MiSessionSpaceEnd);
948  ASSERT(PAGE_ALIGN(EndVa) == EndVa);
949 
950  /* Get the start and end PDE, then loop each one */
951  StartPde = MiAddressToPde(StartVa);
952  EndPde = MiAddressToPde((PVOID)((ULONG_PTR)EndVa - 1));
953  Index = ((ULONG_PTR)StartVa - (ULONG_PTR)MmSessionBase) >> 22;
954  while (StartPde <= EndPde)
955  {
956 #ifndef _M_AMD64
957  /* If we don't already have a page table for it, increment count */
958  if (MmSessionSpace->PageTables[Index].u.Long == 0) PageCount++;
959 #endif
960  /* Move to the next one */
961  StartPde++;
962  Index++;
963  }
964 
965  /* If there's no page tables to create, bail out */
966  if (PageCount == 0) return STATUS_SUCCESS;
967 
968  /* Reset the start PDE and index */
969  StartPde = MiAddressToPde(StartVa);
970  Index = ((ULONG_PTR)StartVa - (ULONG_PTR)MmSessionBase) >> 22;
971 
972  /* Loop each PDE while holding the working set lock */
973 // MiLockWorkingSet(PsGetCurrentThread(),
974 // &MmSessionSpace->GlobalVirtualAddress->Vm);
975 #ifdef _M_AMD64
976 _WARN("MiSessionCommitPageTables halfplemented for amd64")
981  DBG_UNREFERENCED_LOCAL_VARIABLE(PageFrameNumber);
982  ASSERT(FALSE);
983 #else
984  while (StartPde <= EndPde)
985  {
986  /* Check if we already have a page table */
987  if (MmSessionSpace->PageTables[Index].u.Long == 0)
988  {
989  /* We don't, so the PDE shouldn't be ready yet */
990  ASSERT(StartPde->u.Hard.Valid == 0);
991 
992  /* ReactOS check to avoid MiEnsureAvailablePageOrWait */
993  ASSERT(MmAvailablePages >= 32);
994 
995  /* Acquire the PFN lock and grab a zero page */
998  MI_SET_PROCESS2(PsGetCurrentProcess()->ImageFileName);
1000  PageFrameNumber = MiRemoveZeroPage(Color);
1001  TempPde.u.Hard.PageFrameNumber = PageFrameNumber;
1002  MI_WRITE_VALID_PDE(StartPde, TempPde);
1003 
1004  /* Write the page table in session space structure */
1005  ASSERT(MmSessionSpace->PageTables[Index].u.Long == 0);
1007 
1008  /* Initialize the PFN */
1009  MiInitializePfnForOtherProcess(PageFrameNumber,
1010  StartPde,
1012 
1013  /* And now release the lock */
1015 
1016  /* Get the PFN entry and make sure there's no event for it */
1017  Pfn1 = MI_PFN_ELEMENT(PageFrameNumber);
1018  ASSERT(Pfn1->u1.Event == NULL);
1019 
1020  /* Increment the number of pages */
1021  ActualPages++;
1022  }
1023 
1024  /* Move to the next PDE */
1025  StartPde++;
1026  Index++;
1027  }
1028 #endif
1029 
1030  /* Make sure we didn't do more pages than expected */
1031  ASSERT(ActualPages <= PageCount);
1032 
1033  /* Release the working set lock */
1034 // MiUnlockWorkingSet(PsGetCurrentThread(),
1035 // &MmSessionSpace->GlobalVirtualAddress->Vm);
1036 
1037 
1038  /* If we did at least one page... */
1039  if (ActualPages)
1040  {
1041  /* Update the performance counters! */
1044  }
1045 
1046  /* Return status */
1047  return STATUS_SUCCESS;
1048 }
DWORD *typedef PVOID
Definition: winlogon.h:52
SIZE_T NonPageablePages
Definition: miarm.h:458
#define MiAddressToPde(x)
Definition: mmx86.c:20
PMMPDE PageTables
Definition: miarm.h:484
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
return STATUS_SUCCESS
Definition: btrfs.c:2664
HARDWARE_PDE_ARMV6 TempPde
Definition: winldr.c:77
PMM_SESSION_SPACE MmSessionSpace
Definition: session.c:21
VOID NTAPI MiInitializePfnForOtherProcess(IN PFN_NUMBER PageFrameIndex, IN PVOID PteAddress, IN PFN_NUMBER PteFrame)
Definition: pfnlist.c:1280
_Must_inspect_result_ _In_ ULONG Index
Definition: fltkernel.h:1824
PFN_NUMBER MmAvailablePages
Definition: freelist.c:26
struct Color Color
PFN_NUMBER NTAPI MiRemoveZeroPage(IN ULONG Color)
Definition: pfnlist.c:531
uint32_t ULONG_PTR
Definition: typedefs.h:63
UCHAR KIRQL
Definition: env_spec_w32.h:591
PVOID MmSessionBase
Definition: init.c:33
ULONG PFN_NUMBER
Definition: ke.h:8
#define FALSE
Definition: types.h:117
#define _WARN(msg)
Definition: debug.h:262
#define MI_SET_PROCESS2(x)
Definition: mm.h:250
#define PsGetCurrentProcess
Definition: psfuncs.h:17
smooth NULL
Definition: ftsmooth.c:557
ULONG MmSecondaryColorMask
Definition: mminit.c:256
FORCEINLINE VOID MI_WRITE_VALID_PDE(IN PMMPDE PointerPde, IN MMPDE TempPde)
Definition: miarm.h:969
#define MI_SET_USAGE(x)
Definition: mm.h:249
#define DBG_UNREFERENCED_LOCAL_VARIABLE(L)
Definition: ntbasedef.h:318
SIZE_T CommittedPages
Definition: miarm.h:459
ULONG64 Valid
Definition: mmtypes.h:150
PVOID MiSessionSpaceEnd
Definition: init.c:27
VOID FASTCALL KeReleaseQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber, IN KIRQL OldIrql)
Definition: spinlock.c:154
#define PAGE_ALIGN(Va)
#define InterlockedExchangeAddSizeT(a, b)
Definition: interlocked.h:196
FORCEINLINE PMMPFN MI_PFN_ELEMENT(IN PFN_NUMBER Pfn)
Definition: miarm.h:1391
_Requires_lock_held_ Interrupt _Releases_lock_ Interrupt _In_ _IRQL_restores_ KIRQL OldIrql
Definition: kefuncs.h:803
Definition: mm.h:301
KIRQL FASTCALL KeAcquireQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber)
Definition: spinlock.c:108
MMPTE ValidKernelPdeLocal
Definition: init.c:34
ULONG_PTR Long
Definition: mmtypes.h:215
MMPTE_HARDWARE Hard
Definition: mmtypes.h:217
unsigned int ULONG
Definition: retypes.h:1
#define ULONG_PTR
Definition: config.h:101
union _MMPTE::@2072 u
PFN_NUMBER SessionPageDirectoryIndex
Definition: miarm.h:457
VOID NTAPI MiSetControlAreaSymbolsLoaded ( IN PCONTROL_AREA  ControlArea)

Definition at line 1142 of file section.c.

1143 {
1144  KIRQL OldIrql;
1145 
1147 
1149  ControlArea->u.Flags.DebugSymbolsLoaded |= 1;
1150 
1151  ASSERT(OldIrql <= APC_LEVEL);
1154 }
#define KeGetCurrentIrql()
Definition: env_spec_w32.h:706
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
UCHAR KIRQL
Definition: env_spec_w32.h:591
VOID FASTCALL KeReleaseQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber, IN KIRQL OldIrql)
Definition: spinlock.c:154
_Requires_lock_held_ Interrupt _Releases_lock_ Interrupt _In_ _IRQL_restores_ KIRQL OldIrql
Definition: kefuncs.h:803
KIRQL FASTCALL KeAcquireQueuedSpinLock(IN KSPIN_LOCK_QUEUE_NUMBER LockNumber)
Definition: spinlock.c:108
#define APC_LEVEL
Definition: env_spec_w32.h:695
NTSTATUS NTAPI MiSetProtectionOnSection ( IN PEPROCESS  Process,
IN PMMVAD  FoundVad,
IN PVOID  StartingAddress,
IN PVOID  EndingAddress,
IN ULONG  NewProtect,
OUT PULONG  CapturedOldProtect,
IN ULONG  DontCharge,
OUT PULONG  Locked 
)

Definition at line 2061 of file section.c.

2069 {
2070  PMMPTE PointerPte, LastPte;
2071  MMPTE TempPte, PteContents;
2072  PMMPDE PointerPde;
2073  PMMPFN Pfn1;
2074  ULONG ProtectionMask, QuotaCharge = 0;
2076  PAGED_CODE();
2077 
2078  //
2079  // Tell caller nothing is being locked
2080  //
2081  *Locked = FALSE;
2082 
2083  //
2084  // This function should only be used for section VADs. Windows ASSERT */
2085  //
2086  ASSERT(FoundVad->u.VadFlags.PrivateMemory == 0);
2087 
2088  //
2089  // We don't support these features in ARM3
2090  //
2091  ASSERT(FoundVad->u.VadFlags.VadType != VadImageMap);
2092  ASSERT(FoundVad->u2.VadFlags2.CopyOnWrite == 0);
2093 
2094  //
2095  // Convert and validate the protection mask
2096  //
2097  ProtectionMask = MiMakeProtectionMask(NewProtect);
2098  if (ProtectionMask == MM_INVALID_PROTECTION)
2099  {
2100  DPRINT1("Invalid section protect\n");
2102  }
2103 
2104  //
2105  // Get the PTE and PDE for the address, as well as the final PTE
2106  //
2108  PointerPde = MiAddressToPde(StartingAddress);
2109  PointerPte = MiAddressToPte(StartingAddress);
2110  LastPte = MiAddressToPte(EndingAddress);
2111 
2112  //
2113  // Make the PDE valid, and check the status of the first PTE
2114  //
2116  if (PointerPte->u.Long)
2117  {
2118  //
2119  // Not supported in ARM3
2120  //
2121  ASSERT(FoundVad->u.VadFlags.VadType != VadRotatePhysical);
2122 
2123  //
2124  // Capture the page protection and make the PDE valid
2125  //
2126  *CapturedOldProtect = MiGetPageProtection(PointerPte);
2128  }
2129  else
2130  {
2131  //
2132  // Only pagefile-backed section VADs are supported for now
2133  //
2134  ASSERT(FoundVad->u.VadFlags.VadType != VadImageMap);
2135 
2136  //
2137  // Grab the old protection from the VAD itself
2138  //
2139  *CapturedOldProtect = MmProtectToValue[FoundVad->u.VadFlags.Protection];
2140  }
2141 
2142  //
2143  // Loop all the PTEs now
2144  //
2146  while (PointerPte <= LastPte)
2147  {
2148  //
2149  // Check if we've crossed a PDE boundary and make the new PDE valid too
2150  //
2151  if ((((ULONG_PTR)PointerPte) & (SYSTEM_PD_SIZE - 1)) == 0)
2152  {
2153  PointerPde = MiPteToPde(PointerPte);
2155  }
2156 
2157  //
2158  // Capture the PTE and see what we're dealing with
2159  //
2160  PteContents = *PointerPte;
2161  if (PteContents.u.Long == 0)
2162  {
2163  //
2164  // This used to be a zero PTE and it no longer is, so we must add a
2165  // reference to the pagetable.
2166  //
2168 
2169  //
2170  // Create the demand-zero prototype PTE
2171  //
2172  TempPte = PrototypePte;
2173  TempPte.u.Soft.Protection = ProtectionMask;
2174  MI_WRITE_INVALID_PTE(PointerPte, TempPte);
2175  }
2176  else if (PteContents.u.Hard.Valid == 1)
2177  {
2178  //
2179  // Get the PFN entry
2180  //
2181  Pfn1 = MiGetPfnEntry(PFN_FROM_PTE(&PteContents));
2182 
2183  //
2184  // We don't support these yet
2185  //
2186  ASSERT((NewProtect & (PAGE_NOACCESS | PAGE_GUARD)) == 0);
2187  ASSERT(Pfn1->u3.e1.PrototypePte == 0);
2188 
2189  //
2190  // Write the protection mask and write it with a TLB flush
2191  //
2192  Pfn1->OriginalPte.u.Soft.Protection = ProtectionMask;
2193  MiFlushTbAndCapture(FoundVad,
2194  PointerPte,
2195  ProtectionMask,
2196  Pfn1,
2197  TRUE);
2198  }
2199  else
2200  {
2201  //
2202  // We don't support these cases yet
2203  //
2204  ASSERT(PteContents.u.Soft.Prototype == 0);
2205  ASSERT(PteContents.u.Soft.Transition == 0);
2206 
2207  //
2208  // The PTE is already demand-zero, just update the protection mask
2209  //
2210  PointerPte->u.Soft.Protection = ProtectionMask;
2211  }
2212 
2213  PointerPte++;
2214  }
2215 
2216  //
2217  // Unlock the working set and update quota charges if needed, then return
2218  //
2220  if ((QuotaCharge > 0) && (!DontCharge))
2221  {
2222  FoundVad->u.VadFlags.CommitCharge -= QuotaCharge;
2223  Process->CommitCharge -= QuotaCharge;
2224  }
2225  return STATUS_SUCCESS;
2226 }
#define MM_INVALID_PROTECTION
Definition: miarm.h:69
MMPTE PrototypePte
Definition: init.c:42
#define TRUE
Definition: types.h:120
FORCEINLINE VOID MiUnlockProcessWorkingSetUnsafe(IN PEPROCESS Process, IN PETHREAD Thread)
Definition: miarm.h:1177
#define MiAddressToPde(x)
Definition: mmx86.c:20
#define PsGetCurrentThread()
Definition: env_spec_w32.h:81
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
return STATUS_SUCCESS
Definition: btrfs.c:2664
#define PAGE_GUARD
Definition: nt_native.h:1310
uint32_t ULONG_PTR
Definition: typedefs.h:63
USHORT PrototypePte
Definition: mm.h:291
MMPFNENTRY e1
Definition: mm.h:325
union _MMPFN::@1566 u3
#define MiAddressToPte(x)
Definition: mmx86.c:19
#define FALSE
Definition: types.h:117
_In_ PMEMORY_AREA _In_ PVOID _In_ BOOLEAN Locked
Definition: newmm.h:260
#define PAGE_NOACCESS
Definition: nt_native.h:1302
VOID NTAPI MiMakePdeExistAndMakeValid(IN PMMPDE PointerPde, IN PEPROCESS TargetProcess, IN KIRQL OldIrql)
Definition: virtual.c:2371
PVOID FORCEINLINE MiPteToAddress(PMMPTE PointerPte)
Definition: mm.h:185
ULONG64 Protection
Definition: mmtypes.h:88
FORCEINLINE VOID MiLockProcessWorkingSetUnsafe(IN PEPROCESS Process, IN PETHREAD Thread)
Definition: miarm.h:1107
ULONG NTAPI MiMakeProtectionMask(IN ULONG Protect)
Definition: section.c:158
ULONG64 Valid
Definition: mmtypes.h:150
_In_opt_ PFILE_OBJECT _In_opt_ PETHREAD Thread
Definition: fltkernel.h:2653
HARDWARE_PTE_ARMV6 TempPte
Definition: winldr.c:75
#define PAGED_CODE()
Definition: video.h:57
#define MM_NOIRQL
Definition: miarm.h:203
Definition: mm.h:301
ULONG64 Prototype
Definition: mmtypes.h:89
#define STATUS_INVALID_PAGE_PROTECTION
Definition: ntstatus.h:291
const ULONG MmProtectToValue[32]
Definition: page.c:81
FORCEINLINE PMMPFN MiGetPfnEntry(IN PFN_NUMBER Pfn)
Definition: mm.h:873
ULONG_PTR Long
Definition: mmtypes.h:215
MMPTE_HARDWARE Hard
Definition: mmtypes.h:217
#define SYSTEM_PD_SIZE
Definition: miarm.h:34
#define MiPteToPde(_Pte)
Definition: mm.h:220
FORCEINLINE VOID MI_WRITE_INVALID_PTE(IN PMMPTE PointerPte, IN MMPTE InvalidPte)
Definition: miarm.h:943
ULONG64 Transition
Definition: mmtypes.h:90
ULONG NTAPI MiGetPageProtection(IN PMMPTE PointerPte)
Definition: virtual.c:1329
_Must_inspect_result_ _In_ ULONG NewProtect
Definition: mmfuncs.h:683
MMPTE_SOFTWARE Soft
Definition: mmtypes.h:219
MMPTE OriginalPte
Definition: mm.h:335
#define DPRINT1
Definition: precomp.h:8
_Must_inspect_result_ _In_ PLARGE_INTEGER _In_ PLARGE_INTEGER _In_ ULONG _In_ PFILE_OBJECT _In_ PVOID Process
Definition: fsrtlfuncs.h:219
FORCEINLINE VOID MiIncrementPageTableReferences(IN PVOID Address)
Definition: miarm.h:1635
unsigned int ULONG
Definition: retypes.h:1
union _MMPTE::@2072 u
VOID NTAPI MiFlushTbAndCapture(IN PMMVAD FoundVad, IN PMMPTE PointerPte, IN ULONG ProtectionMask, IN PMMPFN Pfn1, IN BOOLEAN UpdateDirty)
Definition: section.c:1957
#define PFN_FROM_PTE(v)
Definition: mm.h:82
VOID NTAPI MiSubsectionConsistent ( IN PSUBSECTION  Subsection)

Definition at line 1478 of file section.c.

1479 {
1480  /* ReactOS only supports systems with 4K pages and 4K sectors */
1481  ASSERT(Subsection->u.SubsectionFlags.SectorEndOffset == 0);
1482 
1483  /* Therefore, then number of PTEs should be equal to the number of sectors */
1484  if (Subsection->NumberOfFullSectors != Subsection->PtesInSubsection)
1485  {
1486  /* Break and warn if this is inconsistent */
1487  DPRINT1("Mm: Subsection inconsistent (%x vs %x)\n",
1488  Subsection->NumberOfFullSectors, Subsection->PtesInSubsection);
1489  DbgBreakPoint();
1490  }
1491 }
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
void DbgBreakPoint()
Definition: mach.c:558
#define DPRINT1
Definition: precomp.h:8
NTSTATUS NTAPI MiUnmapViewInSystemSpace ( IN PMMSESSION  Session,
IN PVOID  MappedBase 
)

Definition at line 2376 of file section.c.

Referenced by MmUnmapViewInSessionSpace(), and MmUnmapViewInSystemSpace().

2378 {
2379  ULONG Size;
2380  PCONTROL_AREA ControlArea;
2381  PAGED_CODE();
2382 
2383  /* Remove this mapping */
2384  KeAcquireGuardedMutex(Session->SystemSpaceViewLockPointer);
2385  Size = MiRemoveFromSystemSpace(Session, MappedBase, &ControlArea);
2386 
2387  /* Clear the bits for this mapping */
2388  RtlClearBits(Session->SystemSpaceBitMap,
2389  (ULONG)(((ULONG_PTR)MappedBase - (ULONG_PTR)Session->SystemSpaceViewStart) >> 16),
2390  Size);
2391 
2392  /* Convert the size from a bit size into the actual size */
2393  Size = Size * (_64K >> PAGE_SHIFT);
2394 
2395  /* Remove the PTEs now */
2396  MiRemoveMappedPtes(MappedBase, Size, ControlArea, NULL);
2397  KeReleaseGuardedMutex(Session->SystemSpaceViewLockPointer);
2398 
2399  /* Return success */
2400  return STATUS_SUCCESS;
2401 }
#define PAGE_SHIFT
Definition: env_spec_w32.h:45
NTSYSAPI void WINAPI RtlClearBits(PRTL_BITMAP, ULONG, ULONG)
VOID FASTCALL KeAcquireGuardedMutex(IN PKGUARDED_MUTEX GuardedMutex)
Definition: gmutex.c:42
return STATUS_SUCCESS
Definition: btrfs.c:2664
VOID NTAPI MiRemoveMappedPtes(IN PVOID BaseAddress, IN ULONG NumberOfPtes, IN PCONTROL_AREA ControlArea, IN PMMSUPPORT Ws)
Definition: section.c:2230
uint32_t ULONG_PTR
Definition: typedefs.h:63
ULONG NTAPI MiRemoveFromSystemSpace(IN PMMSESSION Session, IN PVOID Base, OUT PCONTROL_AREA *ControlArea)
Definition: section.c:2332
smooth NULL
Definition: ftsmooth.c:557
UINTN Size
Definition: acefiex.h:555
#define PAGED_CODE()
Definition: video.h:57
#define _64K
Definition: miarm.h:17
VOID FASTCALL KeReleaseGuardedMutex(IN OUT PKGUARDED_MUTEX GuardedMutex)
Definition: gmutex.c:53
_Must_inspect_result_ _Outptr_result_bytebuffer_ ViewSize PVOID * MappedBase
Definition: mmfuncs.h:493
unsigned int ULONG
Definition: retypes.h:1
NTSTATUS NTAPI MiUnmapViewOfSection ( IN PEPROCESS  Process,
IN PVOID  BaseAddress,
IN ULONG  Flags 
)

Definition at line 817 of file section.c.

Referenced by MmUnmapViewOfSection(), and NtUnmapViewOfSection().

820 {
824  PMMVAD Vad;
825  PVOID DbgBase = NULL;
828  PETHREAD CurrentThread = PsGetCurrentThread();
830  PAGED_CODE();
831 
832  /* Check for Mm Region */
833  MemoryArea = MmLocateMemoryAreaByAddress(&Process->Vm, BaseAddress);
834  if ((MemoryArea) && (MemoryArea->Type != MEMORY_AREA_OWNED_BY_ARM3))
835  {
836  /* Call Mm API */
837  return MiRosUnmapViewOfSection(Process, BaseAddress, Process->ProcessExiting);
838  }
839 
840  /* Check if we should attach to the process */
841  if (CurrentProcess != Process)
842  {
843  /* The process is different, do an attach */
844  KeStackAttachProcess(&Process->Pcb, &ApcState);
845  Attached = TRUE;
846  }
847 
848  /* Check if we need to lock the address space */
849  if (!Flags) MmLockAddressSpace(&Process->Vm);
850 
851  /* Check if the process is already daed */
852  if (Process->VmDeleted)
853  {
854  /* Fail the call */
855  DPRINT1("Process died!\n");
856  if (!Flags) MmUnlockAddressSpace(&Process->Vm);
858  goto Quickie;
859  }
860 
861  /* Find the VAD for the address and make sure it's a section VAD */
863  if (!(Vad) || (Vad->u.VadFlags.PrivateMemory))
864  {
865  /* Couldn't find it, or invalid VAD, fail */
866  DPRINT1("No VAD or invalid VAD\n");
867  if (!Flags) MmUnlockAddressSpace(&Process->Vm);
868  Status = STATUS_NOT_MAPPED_VIEW;
869  goto Quickie;
870  }
871 
872  /* We should be attached */
874 
875  /* We need the base address for the debugger message on image-backed VADs */
876  if (Vad->u.VadFlags.VadType == VadImageMap)
877  {
878  DbgBase = (PVOID)(Vad->StartingVpn >> PAGE_SHIFT);
879  }
880 
881  /* Compute the size of the VAD region */
882  RegionSize = PAGE_SIZE + ((Vad->EndingVpn - Vad->StartingVpn) << PAGE_SHIFT);
883 
884  /* For SEC_NO_CHANGE sections, we need some extra checks */
885  if (Vad->u.VadFlags.NoChange == 1)
886  {
887  /* Are we allowed to mess with this VAD? */
888  Status = MiCheckSecuredVad(Vad,
889  (PVOID)(Vad->StartingVpn >> PAGE_SHIFT),
890  RegionSize,
892  if (!NT_SUCCESS(Status))
893  {
894  /* We failed */
895  DPRINT1("Trying to unmap protected VAD!\n");
896  if (!Flags) MmUnlockAddressSpace(&Process->Vm);
897  goto Quickie;
898  }
899  }
900 
901  /* Not currently supported */
903 
904  /* FIXME: Remove VAD charges */
905 
906  /* Lock the working set */
907  MiLockProcessWorkingSetUnsafe(Process, CurrentThread);
908 
909  /* Remove the VAD */
910  ASSERT(Process->VadRoot.NumberGenericTableElements >= 1);
911  MiRemoveNode((PMMADDRESS_NODE)Vad, &Process->VadRoot);
912 
913  /* Remove the PTEs for this view, which also releases the working set lock */
915 
916  /* FIXME: Remove commitment */
917 
918  /* Update performance counter and release the lock */
919  Process->VirtualSize -= RegionSize;
920  if (!Flags) MmUnlockAddressSpace(&Process->Vm);
921 
922  /* Destroy the VAD and return success */
923  ExFreePool(Vad);
924  Status = STATUS_SUCCESS;
925 
926  /* Failure and success case -- send debugger message, detach, and return */
927 Quickie:
928  if (DbgBase) DbgkUnMapViewOfSection(DbgBase);
929  if (Attached) KeUnstackDetachProcess(&ApcState);
930  return Status;
931 }
DWORD *typedef PVOID
Definition: winlogon.h:52
#define PAGE_SHIFT
Definition: env_spec_w32.h:45
#define TRUE
Definition: types.h:120
KAPC_STATE
Definition: ketypes.h:1258
ULONG Type
Definition: mm.h:210
#define PsGetCurrentThread()
Definition: env_spec_w32.h:81
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
return STATUS_SUCCESS
Definition: btrfs.c:2664
FORCEINLINE VOID MmUnlockAddressSpace(PMMSUPPORT AddressSpace)
Definition: mm.h:1350
VOID NTAPI MiRemoveMappedView(IN PEPROCESS CurrentProcess, IN PMMVAD Vad)
Definition: section.c:780
PMEMORY_AREA NTAPI MmLocateMemoryAreaByAddress(PMMSUPPORT AddressSpace, PVOID Address)
Definition: marea.c:60
ULONG_PTR NoChange
Definition: mmtypes.h:694
MMVAD_FLAGS VadFlags
Definition: mmtypes.h:735
#define MM_DELETE_CHECK
Definition: miarm.h:233
ULONG_PTR EndingVpn
Definition: mmtypes.h:731
_Must_inspect_result_ _In_ ULONG Flags
Definition: wsk.h:170
static BOOL Attached
Definition: vidbios.c:3904
#define MEMORY_AREA_OWNED_BY_ARM3
Definition: mm.h:71
#define FALSE
Definition: types.h:117
VOID NTAPI KeStackAttachProcess(IN PKPROCESS Process, OUT PRKAPC_STATE ApcState)
Definition: procobj.c:649
NTSTATUS NTAPI MiRosUnmapViewOfSection(IN PEPROCESS Process, IN PVOID BaseAddress, IN BOOLEAN SkipDebuggerNotify)
Definition: section.c:4126
#define PsGetCurrentProcess
Definition: psfuncs.h:17
smooth NULL
Definition: ftsmooth.c:557
PMMVAD NTAPI MiLocateAddress(IN PVOID VirtualAddress)
Definition: vadnode.c:48
ULONG_PTR StartingVpn
Definition: mmtypes.h:730
NTSTATUS NTAPI MiCheckSecuredVad(IN PMMVAD Vad, IN PVOID Base, IN SIZE_T Size, IN ULONG ProtectionMask)
Definition: vadnode.c:809
FORCEINLINE VOID MiLockProcessWorkingSetUnsafe(IN PEPROCESS Process, IN PETHREAD Thread)
Definition: miarm.h:1107
unsigned char BOOLEAN
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID * BaseAddress
Definition: mmfuncs.h:404
ULONG CurrentProcess
Definition: shell.c:125
ULONG_PTR PrivateMemory
Definition: mmtypes.h:699
union _MMVAD::@2311 u
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:24
#define STATUS_PROCESS_IS_TERMINATING
Definition: ntstatus.h:488
#define PAGED_CODE()
Definition: video.h:57
VOID NTAPI DbgkUnMapViewOfSection(IN PVOID BaseAddress)
Definition: dbgkutil.c:436
#define PAGE_SIZE
Definition: env_spec_w32.h:49
VOID NTAPI MiRemoveNode(IN PMMADDRESS_NODE Node, IN PMM_AVL_TABLE Table)
Definition: vadnode.c:360
Status
Definition: gdiplustypes.h:24
ULONG_PTR SIZE_T
Definition: typedefs.h:78
LONG NTSTATUS
Definition: DriverTester.h:11
__kernel_entry _Inout_ _Inout_ PSIZE_T RegionSize
Definition: mmfuncs.h:172
VOID NTAPI KeUnstackDetachProcess(IN PRKAPC_STATE ApcState)
Definition: procobj.c:701
_Out_ PKAPC_STATE ApcState
Definition: mm.h:1411
#define DPRINT1
Definition: precomp.h:8
_Must_inspect_result_ _In_ PLARGE_INTEGER _In_ PLARGE_INTEGER _In_ ULONG _In_ PFILE_OBJECT _In_ PVOID Process
Definition: fsrtlfuncs.h:219
#define STATUS_NOT_MAPPED_VIEW
Definition: ntstatus.h:248
struct _MEMORY_AREA * MemoryArea
Definition: newmm.h:65
FORCEINLINE VOID MmLockAddressSpace(PMMSUPPORT AddressSpace)
Definition: mm.h:1343
ULONG_PTR VadType
Definition: mmtypes.h:695
#define ExFreePool(addr)
Definition: env_spec_w32.h:352
NTSTATUS NTAPI MmCommitSessionMappedView ( IN PVOID  MappedBase,
IN SIZE_T  ViewSize 
)

Definition at line 3081 of file section.c.

3083 {
3084  ULONG_PTR StartAddress, EndingAddress, Base;
3085  ULONG Hash, Count = 0, Size, QuotaCharge;
3086  PMMSESSION Session;
3087  PMMPTE LastProtoPte, PointerPte, ProtoPte;
3088  PCONTROL_AREA ControlArea;
3089  PSEGMENT Segment;
3090  PSUBSECTION Subsection;
3091  MMPTE TempPte;
3092  PAGED_CODE();
3093 
3094  /* Make sure the base isn't past the session view range */
3095  if ((MappedBase < MiSessionViewStart) ||
3097  {
3098  DPRINT1("Base outside of valid range\n");
3100  }
3101 
3102  /* Make sure the size isn't past the session view range */
3105  {
3106  DPRINT1("Size outside of valid range\n");
3108  }
3109 
3110  /* Sanity check */
3111  ASSERT(ViewSize != 0);
3112 
3113  /* Process must be in a session */
3114  if (PsGetCurrentProcess()->ProcessInSession == FALSE)
3115  {
3116  DPRINT1("Process is not in session\n");
3117  return STATUS_NOT_MAPPED_VIEW;
3118  }
3119 
3120  /* Compute the correctly aligned base and end addresses */
3121  StartAddress = (ULONG_PTR)PAGE_ALIGN(MappedBase);
3122  EndingAddress = ((ULONG_PTR)MappedBase + ViewSize - 1) | (PAGE_SIZE - 1);
3123 
3124  /* Sanity check and grab the session */
3126  Session = &MmSessionSpace->Session;
3127 
3128  /* Get the hash entry for this allocation */
3129  Hash = (StartAddress >> 16) % Session->SystemSpaceHashKey;
3130 
3131  /* Lock system space */
3133 
3134  /* Loop twice so we can try rolling over if needed */
3135  while (TRUE)
3136  {
3137  /* Extract the size and base addresses from the entry */
3138  Base = Session->SystemSpaceViewTable[Hash].Entry & ~0xFFFF;
3139  Size = Session->SystemSpaceViewTable[Hash].Entry & 0xFFFF;
3140 
3141  /* Convert the size to bucket chunks */
3143 
3144  /* Bail out if this entry fits in here */
3145  if ((StartAddress >= Base) && (EndingAddress < (Base + Size))) break;
3146 
3147  /* Check if we overflew past the end of the hash table */
3148  if (++Hash >= Session->SystemSpaceHashSize)
3149  {
3150  /* Reset the hash to zero and keep searching from the bottom */
3151  Hash = 0;
3152  if (++Count == 2)
3153  {
3154  /* But if we overflew twice, then this is not a real mapping */
3155  KeBugCheckEx(DRIVER_UNMAPPING_INVALID_VIEW,
3156  Base,
3157  2,
3158  0,
3159  0);
3160  }
3161  }
3162  }
3163 
3164  /* Make sure the view being mapped is not file-based */
3165  ControlArea = Session->SystemSpaceViewTable[Hash].ControlArea;
3166  if (ControlArea->FilePointer != NULL)
3167  {
3168  /* It is, so we have to bail out */
3169  DPRINT1("Only page-filed backed sections can be commited\n");
3171  return STATUS_ALREADY_COMMITTED;
3172  }
3173 
3174  /* Get the subsection. We don't support LARGE_CONTROL_AREA in ARM3 */
3175  ASSERT(ControlArea->u.Flags.GlobalOnlyPerSession == 0);
3176  ASSERT(ControlArea->u.Flags.Rom == 0);
3177  Subsection = (PSUBSECTION)(ControlArea + 1);
3178 
3179  /* Get the start and end PTEs -- make sure the end PTE isn't past the end */
3180  ProtoPte = Subsection->SubsectionBase + ((StartAddress - Base) >> PAGE_SHIFT);
3181  QuotaCharge = MiAddressToPte(EndingAddress) - MiAddressToPte(StartAddress) + 1;
3182  LastProtoPte = ProtoPte + QuotaCharge;
3183  if (LastProtoPte >= Subsection->SubsectionBase + Subsection->PtesInSubsection)
3184  {
3185  DPRINT1("PTE is out of bounds\n");
3188  }
3189 
3190  /* Acquire the commit lock and count all the non-committed PTEs */
3192  PointerPte = ProtoPte;
3193  while (PointerPte < LastProtoPte)
3194  {
3195  if (PointerPte->u.Long) QuotaCharge--;
3196  PointerPte++;
3197  }
3198 
3199  /* Was everything committed already? */
3200  if (!QuotaCharge)
3201  {
3202  /* Nothing to do! */
3205  return STATUS_SUCCESS;
3206  }
3207 
3208  /* Pick the segment and template PTE */
3209  Segment = ControlArea->Segment;
3210  TempPte = Segment->SegmentPteTemplate;
3211  ASSERT(TempPte.u.Long != 0);
3212 
3213  /* Loop all prototype PTEs to be committed */
3214  PointerPte = ProtoPte;
3215  while (PointerPte < LastProtoPte)
3216  {
3217  /* Make sure the PTE is already invalid */
3218  if (PointerPte->u.Long == 0)
3219  {
3220  /* And write the invalid PTE */
3221  MI_WRITE_INVALID_PTE(PointerPte, TempPte);
3222  }
3223 
3224  /* Move to the next PTE */
3225  PointerPte++;
3226  }
3227 
3228  /* Check if we had at least one page charged */
3229  if (QuotaCharge)
3230  {
3231  /* Update the accounting data */
3232  Segment->NumberOfCommittedPages += QuotaCharge;
3234  }
3235 
3236  /* Release all */
3239  return STATUS_SUCCESS;
3240 }
DWORD *typedef PVOID
Definition: winlogon.h:52
static int Hash(const char *)
Definition: reader.c:2247
#define PAGE_SHIFT
Definition: env_spec_w32.h:45
ULONG NumberOfCommittedPages
Definition: mmtypes.h:407
#define TRUE
Definition: types.h:120
PFILE_OBJECT FilePointer
Definition: mmtypes.h:525
VOID FASTCALL KeAcquireGuardedMutex(IN PKGUARDED_MUTEX GuardedMutex)
Definition: gmutex.c:42
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
return STATUS_SUCCESS
Definition: btrfs.c:2664
_In_opt_ ULONG Base
Definition: rtlfuncs.h:2327
SIZE_T MmSharedCommit
Definition: freelist.c:31
union _CONTROL_AREA::@2304 u
PMM_SESSION_SPACE MmSessionSpace
Definition: session.c:21
_Inout_ __drv_aliasesMem PSLIST_ENTRY _Inout_ PSLIST_ENTRY _In_ ULONG Count
Definition: exfuncs.h:1015
uint32_t ULONG_PTR
Definition: typedefs.h:63
#define STATUS_ALREADY_COMMITTED
Definition: ntstatus.h:256
#define MiAddressToPte(x)
Definition: mmx86.c:19
#define FALSE
Definition: types.h:117
ULONG MmSessionViewSize
Definition: init.c:35
#define PsGetCurrentProcess
Definition: psfuncs.h:17
smooth NULL
Definition: ftsmooth.c:557
#define STATUS_INVALID_PARAMETER_2
Definition: ntstatus.h:462
PMMVIEW SystemSpaceViewTable
Definition: miarm.h:430
ULONG SystemSpaceHashKey
Definition: miarm.h:433
_Inout_ PVOID Segment
Definition: exfuncs.h:893
UINTN Size
Definition: acefiex.h:555
MMSESSION Session
Definition: miarm.h:474
#define PAGE_ALIGN(Va)
HARDWARE_PTE_ARMV6 TempPte
Definition: winldr.c:75
#define PAGED_CODE()
Definition: video.h:57
BOOLEAN NTAPI MmIsAddressValid(IN PVOID VirtualAddress)
Definition: mmsup.c:174
struct _SUBSECTION * PSUBSECTION
#define InterlockedExchangeAddSizeT(a, b)
Definition: interlocked.h:196
VOID FASTCALL KeReleaseGuardedMutexUnsafe(IN OUT PKGUARDED_MUTEX GuardedMutex)
Definition: gmutex.c:75
PKGUARDED_MUTEX SystemSpaceViewLockPointer
Definition: miarm.h:428
PCONTROL_AREA ControlArea
Definition: miarm.h:422
#define STATUS_INVALID_PARAMETER_1
Definition: ntstatus.h:461
ULONG GlobalOnlyPerSession
Definition: mmtypes.h:483
#define PAGE_SIZE
Definition: env_spec_w32.h:49
KGUARDED_MUTEX MmSectionCommitMutex
Definition: section.c:108
ULONG_PTR Long
Definition: mmtypes.h:215
FORCEINLINE VOID MI_WRITE_INVALID_PTE(IN PMMPTE PointerPte, IN MMPTE InvalidPte)
Definition: miarm.h:943
PVOID MiSessionViewStart
Definition: init.c:30
#define MI_SYSTEM_VIEW_BUCKET_SIZE
Definition: miarm.h:238
PSEGMENT Segment
Definition: mmtypes.h:513
VOID FASTCALL KeReleaseGuardedMutex(IN OUT PKGUARDED_MUTEX GuardedMutex)
Definition: gmutex.c:53
#define DPRINT1
Definition: precomp.h:8
_Must_inspect_result_ _Outptr_result_bytebuffer_ ViewSize PVOID * MappedBase
Definition: mmfuncs.h:493
MMPTE SegmentPteTemplate
Definition: mmtypes.h:406
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID _In_ ULONG_PTR _In_ SIZE_T _Inout_opt_ PLARGE_INTEGER _Inout_ PSIZE_T ViewSize
Definition: mmfuncs.h:404
VOID FASTCALL KeAcquireGuardedMutexUnsafe(IN OUT PKGUARDED_MUTEX GuardedMutex)
Definition: gmutex.c:64
MMSECTION_FLAGS Flags
Definition: mmtypes.h:523
unsigned int ULONG
Definition: retypes.h:1
#define STATUS_NOT_MAPPED_VIEW
Definition: ntstatus.h:248
#define ULONG_PTR
Definition: config.h:101
ULONG_PTR Entry
Definition: miarm.h:421
union _MMPTE::@2072 u
ULONG SystemSpaceHashSize
Definition: miarm.h:431
PMMPTE SubsectionBase
Definition: mmtypes.h:571
VOID NTAPI KeBugCheckEx(_In_ ULONG BugCheckCode, _In_ ULONG_PTR BugCheckParameter1, _In_ ULONG_PTR BugCheckParameter2, _In_ ULONG_PTR BugCheckParameter3, _In_ ULONG_PTR BugCheckParameter4)
Definition: rtlcompat.c:90
ULONG PtesInSubsection
Definition: mmtypes.h:573
NTSTATUS NTAPI MmCreateArm3Section ( OUT PVOID SectionObject,
IN ACCESS_MASK  DesiredAccess,
IN POBJECT_ATTRIBUTES ObjectAttributes  OPTIONAL,
IN PLARGE_INTEGER  InputMaximumSize,
IN ULONG  SectionPageProtection,
IN ULONG  AllocationAttributes,
IN HANDLE FileHandle  OPTIONAL,
IN PFILE_OBJECT FileObject  OPTIONAL 
)

Definition at line 2410 of file section.c.

Referenced by MmCreateSection().

2418 {
2419  SECTION Section;
2420  PSECTION NewSection;
2421  PSUBSECTION Subsection;
2422  PSEGMENT NewSegment, Segment;
2423  NTSTATUS Status;
2424  PCONTROL_AREA ControlArea;
2425  ULONG ProtectionMask, ControlAreaSize, Size, NonPagedCharge, PagedCharge;
2427  BOOLEAN FileLock = FALSE, KernelCall = FALSE;
2428  KIRQL OldIrql;
2430  BOOLEAN UserRefIncremented = FALSE;
2431  PVOID PreviousSectionPointer;
2432 
2433  /* Make the same sanity checks that the Nt interface should've validated */
2436  SEC_NO_CHANGE)) == 0);
2440  SEC_NOCACHE | SEC_NO_CHANGE))));
2446 
2447  /* Convert section flag to page flag */
2449 
2450  /* Check to make sure the protection is correct. Nt* does this already */
2451  ProtectionMask = MiMakeProtectionMask(SectionPageProtection);
2452  if (ProtectionMask == MM_INVALID_PROTECTION) return STATUS_INVALID_PAGE_PROTECTION;
2453 
2454  /* Check if this is going to be a data or image backed file section */
2455  if ((FileHandle) || (FileObject))
2456  {
2457  /* These cannot be mapped with large pages */
2459 
2460  /* For now, only support the mechanism through a file handle */
2461  ASSERT(FileObject == NULL);
2462 
2463  /* Reference the file handle to get the object */
2465  MmMakeFileAccess[ProtectionMask],
2467  PreviousMode,
2468  (PVOID*)&File,
2469  NULL);
2470  if (!NT_SUCCESS(Status)) return Status;
2471 
2472  /* Make sure Cc has been doing its job */
2473  if (!File->SectionObjectPointer)
2474  {
2475  /* This is not a valid file system-based file, fail */
2476  ObDereferenceObject(File);
2478  }
2479 
2480  /* Image-file backed sections are not yet supported */
2481  ASSERT((AllocationAttributes & SEC_IMAGE) == 0);
2482 
2483  /* Compute the size of the control area, and allocate it */
2484  ControlAreaSize = sizeof(CONTROL_AREA) + sizeof(MSUBSECTION);
2485  ControlArea = ExAllocatePoolWithTag(NonPagedPool, ControlAreaSize, 'aCmM');
2486  if (!ControlArea)
2487  {
2488  ObDereferenceObject(File);
2490  }
2491 
2492  /* Zero it out */
2493  RtlZeroMemory(ControlArea, ControlAreaSize);
2494 
2495  /* Did we get a handle, or an object? */
2496  if (FileHandle)
2497  {
2498  /* We got a file handle so we have to lock down the file */
2499 #if 0
2500  Status = FsRtlAcquireToCreateMappedSection(File, SectionPageProtection);
2501  if (!NT_SUCCESS(Status))
2502  {
2503  ExFreePool(ControlArea);
2504  ObDereferenceObject(File);
2505  return Status;
2506  }
2507 #else
2508  /* ReactOS doesn't support this API yet, so do nothing */
2509  Status = STATUS_SUCCESS;
2510 #endif
2511  /* Update the top-level IRP so that drivers know what's happening */
2513  FileLock = TRUE;
2514  }
2515 
2516  /* Lock the PFN database while we play with the section pointers */
2518 
2519  /* Image-file backed sections are not yet supported */
2520  ASSERT((AllocationAttributes & SEC_IMAGE) == 0);
2521 
2522  /* There should not already be a control area for this file */
2523  ASSERT(File->SectionObjectPointer->DataSectionObject == NULL);
2524  NewSegment = NULL;
2525 
2526  /* Write down that this CA is being created, and set it */
2527  ControlArea->u.Flags.BeingCreated = TRUE;
2528  ASSERT((AllocationAttributes & SEC_IMAGE) == 0);
2529  PreviousSectionPointer = File->SectionObjectPointer;
2530  File->SectionObjectPointer->DataSectionObject = ControlArea;
2531 
2532  /* We can release the PFN lock now */
2534 
2535  /* We don't support previously-mapped file */
2536  ASSERT(NewSegment == NULL);
2537 
2538  /* Image-file backed sections are not yet supported */
2539  ASSERT((AllocationAttributes & SEC_IMAGE) == 0);
2540 
2541  /* So we always create a data file map */
2542  Status = MiCreateDataFileMap(File,
2543  &Segment,
2544  (PSIZE_T)InputMaximumSize,
2547  KernelCall);
2548  if (!NT_SUCCESS(Status))
2549  {
2550  /* Lock the PFN database while we play with the section pointers */
2552 
2553  /* Reset the waiting-for-deletion event */
2554  ASSERT(ControlArea->WaitingForDeletion == NULL);
2555  ControlArea->WaitingForDeletion = NULL;
2556 
2557  /* Set the file pointer NULL flag */
2558  ASSERT(ControlArea->u.Flags.FilePointerNull == 0);
2559  ControlArea->u.Flags.FilePointerNull = TRUE;
2560 
2561  /* Delete the data section object */
2562  ASSERT((AllocationAttributes & SEC_IMAGE) == 0);
2563  File->SectionObjectPointer->DataSectionObject = NULL;
2564 
2565  /* No longer being created */
2566  ControlArea->u.Flags.BeingCreated = FALSE;
2567 
2568  /* We can release the PFN lock now */
2570 
2571  /* Check if we locked and set the IRP */
2572  if (FileLock)
2573  {
2574  /* Undo */
2576  //FsRtlReleaseFile(File);
2577  }
2578 
2579  /* Free the control area and de-ref the file object */
2580  ExFreePool(ControlArea);
2581  ObDereferenceObject(File);
2582 
2583  /* All done */
2584  return Status;
2585  }
2586 
2587  /* On success, we expect this */
2588  ASSERT(PreviousSectionPointer == File->SectionObjectPointer);
2589 
2590  /* Check if a maximum size was specified */
2591  if (!InputMaximumSize->QuadPart)
2592  {
2593  /* Nope, use the segment size */
2594  Section.SizeOfSection.QuadPart = (LONGLONG)Segment->SizeOfSegment;
2595  }
2596  else
2597  {
2598  /* Yep, use the entered size */
2599  Section.SizeOfSection.QuadPart = InputMaximumSize->QuadPart;
2600  }
2601  }
2602  else
2603  {
2604  /* A handle must be supplied with SEC_IMAGE, as this is the no-handle path */
2605  if (AllocationAttributes & SEC_IMAGE) return STATUS_INVALID_FILE_FOR_SECTION;
2606 
2607  /* Not yet supported */
2608  ASSERT((AllocationAttributes & SEC_LARGE_PAGES) == 0);
2609 
2610  /* So this must be a pagefile-backed section, create the mappings needed */
2611  Status = MiCreatePagingFileMap(&NewSegment,
2612  (PSIZE_T)InputMaximumSize,
2613  ProtectionMask,
2615  if (!NT_SUCCESS(Status)) return Status;
2616 
2617  /* Set the size here, and read the control area */
2618  Section.SizeOfSection.QuadPart = NewSegment->SizeOfSegment;
2619  ControlArea = NewSegment->ControlArea;
2620 
2621  /* MiCreatePagingFileMap increments user references */
2622  UserRefIncremented = TRUE;
2623  }
2624 
2625  /* Did we already have a segment? */
2626  if (!NewSegment)
2627  {
2628  /* This must be the file path and we created a segment */
2629  NewSegment = Segment;
2630  ASSERT(File != NULL);
2631 
2632  /* Acquire the PFN lock while we set control area flags */
2634 
2635  /* We don't support this race condition yet, so assume no waiters */
2636  ASSERT(ControlArea->WaitingForDeletion == NULL);
2637  ControlArea->WaitingForDeletion = NULL;
2638 
2639  /* Image-file backed sections are not yet supported, nor ROM images */
2640  ASSERT((AllocationAttributes & SEC_IMAGE) == 0);
2641  ASSERT(Segment->ControlArea->u.Flags.Rom == 0);
2642 
2643  /* Take off the being created flag, and then release the lock */
2644  ControlArea->u.Flags.BeingCreated = FALSE;
2646  }
2647 
2648  /* Check if we locked the file earlier */
2649  if (FileLock)
2650  {
2651  /* Reset the top-level IRP and release the lock */
2653  //FsRtlReleaseFile(File);
2654  FileLock = FALSE;
2655  }
2656 
2657  /* Set the initial section object data */
2658  Section.InitialPageProtection = SectionPageProtection;
2659 
2660  /* The mapping created a control area and segment, save the flags */
2661  Section.Segment = NewSegment;
2662  Section.u.LongFlags = ControlArea->u.LongFlags;
2663 
2664  /* Check if this is a user-mode read-write non-image file mapping */
2665  if (!(FileObject) &&
2667  !(ControlArea->u.Flags.Image) &&
2668  (ControlArea->FilePointer))
2669  {
2670  /* Add a reference and set the flag */
2671  Section.u.Flags.UserWritable = TRUE;
2672  InterlockedIncrement((volatile LONG*)&ControlArea->WritableUserReferences);
2673  }
2674 
2675  /* Check for image mappings or page file mappings */
2676  if ((ControlArea->u.Flags.Image) || !(ControlArea->FilePointer))
2677  {
2678  /* Charge the segment size, and allocate a subsection */
2679  PagedCharge = sizeof(SECTION) + NewSegment->TotalNumberOfPtes * sizeof(MMPTE);
2680  Size = sizeof(SUBSECTION);
2681  }
2682  else
2683  {
2684  /* Charge nothing, and allocate a mapped subsection */
2685  PagedCharge = 0;
2686  Size = sizeof(MSUBSECTION);
2687  }
2688 
2689  /* Check if this is a normal CA */
2690  ASSERT(ControlArea->u.Flags.GlobalOnlyPerSession == 0);
2691  ASSERT(ControlArea->u.Flags.Rom == 0);
2692 
2693  /* Charge only a CA, and the subsection is right after */
2694  NonPagedCharge = sizeof(CONTROL_AREA);
2695  Subsection = (PSUBSECTION)(ControlArea + 1);
2696 
2697  /* We only support single-subsection mappings */
2698  NonPagedCharge += Size;
2699  ASSERT(Subsection->NextSubsection == NULL);
2700 
2701  /* Create the actual section object, with enough space for the prototype PTEs */
2702  Status = ObCreateObject(PreviousMode,
2705  PreviousMode,
2706  NULL,
2707  sizeof(SECTION),
2708  PagedCharge,
2709  NonPagedCharge,
2710  (PVOID*)&NewSection);
2711  if (!NT_SUCCESS(Status))
2712  {
2713  /* Check if this is a user-mode read-write non-image file mapping */
2714  if (!(FileObject) &&
2716  !(ControlArea->u.Flags.Image) &&
2717  (ControlArea->FilePointer))
2718  {
2719  /* Remove a reference and check the flag */
2720  ASSERT(Section.u.Flags.UserWritable == 1);
2721  InterlockedDecrement((volatile LONG*)&ControlArea->WritableUserReferences);
2722  }
2723 
2724  /* Check if a user reference was added */
2725  if (UserRefIncremented)
2726  {
2727  /* Acquire the PFN lock while we change counters */
2729 
2730  /* Decrement the accounting counters */
2731  ControlArea->NumberOfSectionReferences--;
2732  ASSERT((LONG)ControlArea->NumberOfUserReferences > 0);
2733  ControlArea->NumberOfUserReferences--;
2734 
2735  /* Check if we should destroy the CA and release the lock */
2736  MiCheckControlArea(ControlArea, OldIrql);
2737  }
2738 
2739  /* Return the failure code */
2740  return Status;
2741  }
2742 
2743  /* NOTE: Past this point, all failures will be handled by Ob upon ref->0 */
2744 
2745  /* Now copy the local section object from the stack into this new object */
2746  RtlCopyMemory(NewSection, &Section, sizeof(SECTION));
2747  NewSection->Address.StartingVpn = 0;
2748 
2749  /* For now, only user calls are supported */
2750  ASSERT(KernelCall == FALSE);
2751  NewSection->u.Flags.UserReference = TRUE;
2752 
2753  /* Is this a "based" allocation, in which all mappings are identical? */
2755  {
2756  /* Lock the VAD tree during the search */
2758 
2759  /* Is it a brand new ControArea ? */
2760  if (ControlArea->u.Flags.BeingCreated == 1)
2761  {
2762  ASSERT(ControlArea->u.Flags.Based == 1);
2763  /* Then we must find a global address, top-down */
2766  _64K,
2768  (ULONG_PTR*)&ControlArea->Segment->BasedAddress);
2769 
2770  if (!NT_SUCCESS(Status))
2771  {
2772  /* No way to find a valid range. */
2774  ControlArea->u.Flags.Based = 0;
2775  NewSection->u.Flags.Based = 0;
2776  ObDereferenceObject(NewSection);
2777  return Status;
2778  }
2779 
2780  /* Compute the ending address and insert it into the VAD tree */
2781  NewSection->Address.StartingVpn = (ULONG_PTR)ControlArea->Segment->BasedAddress;
2782  NewSection->Address.EndingVpn = NewSection->Address.StartingVpn + NewSection->SizeOfSection.LowPart - 1;
2783  MiInsertBasedSection(NewSection);
2784  }
2785  else
2786  {
2787  /* FIXME : Should we deny section creation if SEC_BASED is not set ? Can we have two different section objects on the same based address ? Investigate !*/
2788  ASSERT(FALSE);
2789  }
2790 
2792  }
2793 
2794  /* The control area is not being created anymore */
2795  if (ControlArea->u.Flags.BeingCreated == 1)
2796  {
2797  /* Acquire the PFN lock while we set control area flags */
2799 
2800  /* Take off the being created flag, and then release the lock */
2801  ControlArea->u.Flags.BeingCreated = 0;
2802  NewSection->u.Flags.BeingCreated = 0;
2803 
2805  }
2806 
2807  /* Migrate the attribute into a flag */
2808  if (AllocationAttributes & SEC_NO_CHANGE) NewSection->u.Flags.NoChange = TRUE;
2809 
2810  /* If R/W access is not requested, this might eventually become a CoW mapping */
2812  {
2813  NewSection->u.Flags.CopyOnWrite = TRUE;
2814  }
2815 
2816  /* Write down if this was a kernel call */
2817  ControlArea->u.Flags.WasPurged |= KernelCall;
2818  ASSERT(ControlArea->u.Flags.WasPurged == FALSE);
2819 
2820  /* Make sure the segment and the section are the same size, or the section is smaller */
2821  ASSERT((ULONG64)NewSection->SizeOfSection.QuadPart <= NewSection->Segment->SizeOfSegment);
2822 
2823  /* Return the object and the creation status */
2824  *SectionObject = (PVOID)NewSection;
2825  return Status;
2826 }
ULONG NoChange
Definition: mmtypes.h:478
_Must_inspect_result_ _Outptr_ PVOID * SectionObject
Definition: fsrtlfuncs.h:860
DWORD *typedef PVOID
Definition: winlogon.h:52
#define PAGE_NOCACHE
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IN PUNICODE_STRING IN POBJECT_ATTRIBUTES ObjectAttributes
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PEVENT_COUNTER WaitingForDeletion
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#define TRUE
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NTSYSAPI VOID NTAPI RtlCopyMemory(VOID UNALIGNED *Destination, CONST VOID UNALIGNED *Source, ULONG Length)
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Definition: mmtypes.h:525
#define STATUS_INSUFFICIENT_RESOURCES
Definition: udferr_usr.h:158
#define SEC_LARGE_PAGES
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ULONGLONG SizeOfSegment
Definition: mmtypes.h:405
_In_ ACCESS_MASK _In_opt_ POBJECT_ATTRIBUTES _In_opt_ PLARGE_INTEGER _In_ ULONG _In_ ULONG AllocationAttributes
Definition: mmfuncs.h:360
ULONG UserReference
Definition: mmtypes.h:471
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Definition: mmtypes.h:515
PSEGMENT Segment
Definition: mmtypes.h:813
NTSTATUS NTAPI MiCreateDataFileMap(IN PFILE_OBJECT File, OUT PSEGMENT *Segment, IN PSIZE_T MaximumSize, IN ULONG SectionPageProtection, IN ULONG AllocationAttributes, IN ULONG IgnoreFileSizing)
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VOID FASTCALL KeAcquireGuardedMutex(IN PKGUARDED_MUTEX GuardedMutex)
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ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel)?(CompletionRoutine!=NULL):TRUE)
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#define PAGE_GUARD
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KGUARDED_MUTEX MmSectionBasedMutex
Definition: section.c:110
MM_AVL_TABLE MmSectionBasedRoot
Definition: section.c:109
union _CONTROL_AREA::@2304 u
ACCESS_MASK MmMakeFileAccess[8]
Definition: section.c:32
union _SECTION::@2320 u
KPROCESSOR_MODE NTAPI ExGetPreviousMode(VOID)
Definition: sysinfo.c:2740
VOID NTAPI ObDereferenceObject(IN PVOID Object)
Definition: obref.c:267
IN SIZE_T IN PVOID File
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#define SEC_NOCACHE
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Definition: mmtypes.h:402
struct _SUBSECTION SUBSECTION
NTSTATUS NTAPI MiCreatePagingFileMap(OUT PSEGMENT *Segment, IN PSIZE_T MaximumSize, IN ULONG ProtectionMask, IN ULONG AllocationAttributes)
Definition: section.c:1510
VOID NTAPI MiInsertBasedSection(IN PSECTION Section)
Definition: vadnode.c:345
struct _CONTROL_AREA * ControlArea
Definition: mmtypes.h:401
uint32_t ULONG_PTR
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#define SEC_BASED
_In_ ACCESS_MASK _In_opt_ POBJECT_ATTRIBUTES _In_opt_ PLARGE_INTEGER _In_ ULONG SectionPageProtection
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UCHAR KIRQL
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NTSTATUS NTAPI ObReferenceObjectByHandle(IN HANDLE Handle, IN ACCESS_MASK DesiredAccess, IN POBJECT_TYPE ObjectType, IN KPROCESSOR_MODE AccessMode, OUT PVOID *Object, OUT POBJECT_HANDLE_INFORMATION HandleInformation OPTIONAL)
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long LONG
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LARGE_INTEGER SizeOfSection
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#define SEC_RESERVE
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struct _MSUBSECTION MSUBSECTION
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