Ros-diffs February 2021

ros-diffs@reactos.org

30 participants
434 discussions

[reactos] 37/100: [SETUPLIB] Lock the volume before writing MBR boot code

by Jérôme Gardou

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=76ac898bc55a6c4c40a4f… commit 76ac898bc55a6c4c40a4f1b503bcb0aac0d51dd0 Author: Jérôme Gardou <jerome.gardou(a)reactos.org> AuthorDate: Thu Dec 3 17:13:38 2020 +0100 Commit: Jérôme Gardou <jerome.gardou(a)reactos.org> CommitDate: Wed Feb 3 09:41:22 2021 +0100 [SETUPLIB] Lock the volume before writing MBR boot code --- base/setup/lib/bootsup.c | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git a/base/setup/lib/bootsup.c b/base/setup/lib/bootsup.c index 37f7bdb43ab..b1e11d108d4 100644 --- a/base/setup/lib/bootsup.c +++ b/base/setup/lib/bootsup.c @@ -555,7 +555,7 @@ InstallBootCodeToDisk( IN PCWSTR RootPath, IN PFS_INSTALL_BOOTCODE InstallBootCode) { - NTSTATUS Status; + NTSTATUS Status, LockStatus; UNICODE_STRING Name; OBJECT_ATTRIBUTES ObjectAttributes; IO_STATUS_BLOCK IoStatusBlock; @@ -584,9 +584,32 @@ InstallBootCodeToDisk( if (!NT_SUCCESS(Status)) return Status; + /* Lock the volume */ + LockStatus = NtFsControlFile(PartitionHandle, NULL, NULL, NULL, &IoStatusBlock, FSCTL_LOCK_VOLUME, NULL, 0, NULL, 0); + if (!NT_SUCCESS(LockStatus)) + { + DPRINT1("Unable to lock the volume before installing boot code. Status 0x%08x. Expect problems.\n", LockStatus); + } + /* Install the bootcode (MBR, VBR) */ Status = InstallBootCode(SrcPath, PartitionHandle, PartitionHandle); + /* dismount & Unlock the volume */ + if (NT_SUCCESS(LockStatus)) + { + LockStatus = NtFsControlFile(PartitionHandle, NULL, NULL, NULL, &IoStatusBlock, FSCTL_DISMOUNT_VOLUME, NULL, 0, NULL, 0); + if (!NT_SUCCESS(LockStatus)) + { + DPRINT1("Unable to unlock the volume after installing boot code. Status 0x%08x. Expect problems.\n", LockStatus); + } + + LockStatus = NtFsControlFile(PartitionHandle, NULL, NULL, NULL, &IoStatusBlock, FSCTL_UNLOCK_VOLUME, NULL, 0, NULL, 0); + if (!NT_SUCCESS(LockStatus)) + { + DPRINT1("Unable to unlock the volume after installing boot code. Status 0x%08x. Expect problems.\n", LockStatus); + } + } + /* Close the partition */ NtClose(PartitionHandle); @@ -1076,6 +1099,7 @@ InstallFatBootcodeToPartition( DPRINT1("Install FAT32 bootcode: %S ==> %S\n", SrcPath, SystemRootPath->Buffer); Status = InstallBootCodeToDisk(SrcPath, SystemRootPath->Buffer, InstallFat32BootCode); + DPRINT1("Status: 0x%08X\n", Status); if (!NT_SUCCESS(Status)) { DPRINT1("InstallBootCodeToDisk(FAT32) failed (Status %lx)\n", Status);

3 years, 9 months

[reactos] 36/100: [NTOSKRNL] Address issues raised in PR 3361 review

by Jérôme Gardou

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=d2fa434cb7849442c9813… commit d2fa434cb7849442c9813ca3daac83882114cecd Author: Jérôme Gardou <jerome.gardou(a)reactos.org> AuthorDate: Wed Dec 2 15:17:28 2020 +0100 Commit: Jérôme Gardou <jerome.gardou(a)reactos.org> CommitDate: Wed Feb 3 09:41:22 2021 +0100 [NTOSKRNL] Address issues raised in PR 3361 review --- ntoskrnl/cache/section/data.c | 4 ---- ntoskrnl/mm/ARM3/section.c | 8 ++++++++ ntoskrnl/mm/section.c | 39 ++++++++++++++++----------------------- 3 files changed, 24 insertions(+), 27 deletions(-) diff --git a/ntoskrnl/cache/section/data.c b/ntoskrnl/cache/section/data.c index 1ec6a3326d9..fa83080eddb 100644 --- a/ntoskrnl/cache/section/data.c +++ b/ntoskrnl/cache/section/data.c @@ -274,8 +274,6 @@ MmFinalizeSegment(PMM_SECTION_SEGMENT Segment) DPRINT("Finalize segment %p\n", Segment); - __debugbreak(); - MmLockSectionSegment(Segment); RemoveEntryList(&Segment->ListOfSegments); if (Segment->Flags & MM_DATAFILE_SEGMENT) { @@ -622,8 +620,6 @@ MiFreeSegmentPage(PMM_SECTION_SEGMENT Segment, ULONG_PTR Entry; PFILE_OBJECT FileObject = Segment->FileObject; - __debugbreak(); - Entry = MmGetPageEntrySectionSegment(Segment, FileOffset); DPRINTC("MiFreeSegmentPage(%p:%I64x -> Entry %Ix\n", Segment, diff --git a/ntoskrnl/mm/ARM3/section.c b/ntoskrnl/mm/ARM3/section.c index 9ea36637a22..dde3b2d8cc4 100644 --- a/ntoskrnl/mm/ARM3/section.c +++ b/ntoskrnl/mm/ARM3/section.c @@ -1094,6 +1094,14 @@ MiMapViewInSystemSpace(IN PVOID Section, *ViewSize = SectionSize - SectionOffset->QuadPart; } + /* Check overflow */ + if ((SectionOffset->QuadPart + *ViewSize) < SectionOffset->QuadPart) + { + DPRINT1("Integer overflow between size & offset!\n"); + MiDereferenceControlArea(ControlArea); + return STATUS_INVALID_VIEW_SIZE; + } + /* Check if the caller wanted a larger section than the view */ if (SectionOffset->QuadPart + *ViewSize > SectionSize) { diff --git a/ntoskrnl/mm/section.c b/ntoskrnl/mm/section.c index 6dcf764d7a1..e39f82d0f22 100644 --- a/ntoskrnl/mm/section.c +++ b/ntoskrnl/mm/section.c @@ -2050,7 +2050,7 @@ MmCreatePhysicalMemorySection(VOID) /* * Create the section mapping physical memory */ - SectionSize.QuadPart = ~((ULONG_PTR)0); + SectionSize.QuadPart = MmNumberOfPhysicalPages * PAGE_SIZE; InitializeObjectAttributes(&Obj, &Name, OBJ_PERMANENT | OBJ_KERNEL_EXCLUSIVE, @@ -2192,7 +2192,6 @@ MmCreateDataFileSection(PSECTION *SectionObject, (PVOID*)&Section); if (!NT_SUCCESS(Status)) { - ObDereferenceObject(FileObject); return(Status); } /* @@ -2240,7 +2239,6 @@ MmCreateDataFileSection(PSECTION *SectionObject, if (MaximumSize.QuadPart == 0) { ObDereferenceObject(Section); - ObDereferenceObject(FileObject); return STATUS_MAPPED_FILE_SIZE_ZERO; } } @@ -2254,7 +2252,6 @@ MmCreateDataFileSection(PSECTION *SectionObject, if (!NT_SUCCESS(Status)) { ObDereferenceObject(Section); - ObDereferenceObject(FileObject); return(STATUS_SECTION_NOT_EXTENDED); } } @@ -2263,7 +2260,6 @@ MmCreateDataFileSection(PSECTION *SectionObject, if (FileObject->SectionObjectPointer == NULL) { ObDereferenceObject(Section); - ObDereferenceObject(FileObject); return STATUS_INVALID_FILE_FOR_SECTION; } @@ -2274,7 +2270,6 @@ MmCreateDataFileSection(PSECTION *SectionObject, if (Status != STATUS_SUCCESS) { ObDereferenceObject(Section); - ObDereferenceObject(FileObject); return(Status); } @@ -2305,7 +2300,6 @@ MmCreateDataFileSection(PSECTION *SectionObject, //KeSetEvent((PVOID)&FileObject->Lock, IO_NO_INCREMENT, FALSE); MiReleasePfnLock(OldIrql); ObDereferenceObject(Section); - ObDereferenceObject(FileObject); return(STATUS_NO_MEMORY); } @@ -2329,6 +2323,7 @@ MmCreateDataFileSection(PSECTION *SectionObject, ExInitializeFastMutex(&Segment->Lock); Segment->FileObject = FileObject; + ObReferenceObject(FileObject); Segment->Image.FileOffset = 0; Segment->Protection = SectionPageProtection; @@ -2370,9 +2365,6 @@ MmCreateDataFileSection(PSECTION *SectionObject, } MmUnlockSectionSegment(Segment); - - /* The segment already has a reference to a file object. Don't bother keeping one.*/ - ObDereferenceObject(FileObject); } Section->SizeOfSection = MaximumSize; @@ -3053,7 +3045,6 @@ MmCreateImageSection(PSECTION *SectionObject, (PVOID*)(PVOID)&Section); if (!NT_SUCCESS(Status)) { - ObDereferenceObject(FileObject); return(Status); } @@ -3093,17 +3084,14 @@ MmCreateImageSection(PSECTION *SectionObject, NTSTATUS StatusExeFmt; PMM_SECTION_SEGMENT DataSectionObject; - ImageSectionObject = ExAllocatePoolWithTag(NonPagedPool, sizeof(MM_IMAGE_SECTION_OBJECT), TAG_MM_SECTION_SEGMENT); + ImageSectionObject = ExAllocatePoolZero(NonPagedPool, sizeof(MM_IMAGE_SECTION_OBJECT), TAG_MM_SECTION_SEGMENT); if (ImageSectionObject == NULL) { MiReleasePfnLock(OldIrql); - ObDereferenceObject(FileObject); ObDereferenceObject(Section); return(STATUS_NO_MEMORY); } - RtlZeroMemory(ImageSectionObject, sizeof(MM_IMAGE_SECTION_OBJECT)); - ImageSectionObject->SegFlags = MM_SEGMENT_INCREATE; ImageSectionObject->RefCount = 1; FileObject->SectionObjectPointer->ImageSectionObject = ImageSectionObject; @@ -3172,7 +3160,6 @@ MmCreateImageSection(PSECTION *SectionObject, ExFreePoolWithTag(ImageSectionObject, TAG_MM_SECTION_SEGMENT); ObDereferenceObject(Section); - ObDereferenceObject(FileObject); return(Status); } @@ -3194,12 +3181,15 @@ MmCreateImageSection(PSECTION *SectionObject, ExFreePool(ImageSectionObject->Segments); ExFreePool(ImageSectionObject); ObDereferenceObject(Section); - ObDereferenceObject(FileObject); return(Status); } OldIrql = MiAcquirePfnLock(); ImageSectionObject->SegFlags &= ~MM_SEGMENT_INCREATE; + + /* Take a ref on the file on behalf of the newly created structure */ + ObReferenceObject(FileObject); + MiReleasePfnLock(OldIrql); Status = StatusExeFmt; @@ -3213,9 +3203,6 @@ MmCreateImageSection(PSECTION *SectionObject, Section->Segment = (PSEGMENT)ImageSectionObject; - /* We let the Image Section Object hold the reference */ - ObDereferenceObject(FileObject); - Status = STATUS_SUCCESS; } //KeSetEvent((PVOID)&FileObject->Lock, IO_NO_INCREMENT, FALSE); @@ -3693,8 +3680,10 @@ NtQuerySection( _SEH2_TRY { *((SECTION_BASIC_INFORMATION*)SectionInformation) = Sbi; - if (ResultLength) + if (ResultLength != NULL) + { *ResultLength = sizeof(Sbi); + } } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { @@ -3718,7 +3707,9 @@ NtQuerySection( PSECTION_IMAGE_INFORMATION Sii = (PSECTION_IMAGE_INFORMATION)SectionInformation; *Sii = ImageSectionObject->ImageInformation; if (ResultLength != NULL) + { *ResultLength = sizeof(*Sii); + } } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { @@ -4374,6 +4365,7 @@ MmCreateSection (OUT PVOID * Section, SectionPageProtection, AllocationAttributes, FileObject); + ObDereferenceObject(FileObject); } #ifndef NEWCC else if (FileObject != NULL) @@ -4386,6 +4378,7 @@ MmCreateSection (OUT PVOID * Section, AllocationAttributes, FileObject, FileHandle != NULL); + ObDereferenceObject(FileObject); } #else else if (FileHandle != NULL || FileObject != NULL) @@ -4393,8 +4386,8 @@ MmCreateSection (OUT PVOID * Section, Status = MmCreateCacheSection(SectionObject, DesiredAccess, ObjectAttributes, - SizeOfSection, - InitialPageProtection, + MaximumSize, + SectionPageProtection, AllocationAttributes, FileObject); }

3 years, 9 months

[reactos] 35/100: [NTOS:CC] Fix Vacb size usage & check

by Jérôme Gardou

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=70c62aa2c9e5b4bdabb05… commit 70c62aa2c9e5b4bdabb05ac5b92f6c56ee166fac Author: Jérôme Gardou <jerome.gardou(a)reactos.org> AuthorDate: Wed Dec 2 12:39:58 2020 +0100 Commit: Jérôme Gardou <jerome.gardou(a)reactos.org> CommitDate: Wed Feb 3 09:41:22 2021 +0100 [NTOS:CC] Fix Vacb size usage & check --- ntoskrnl/cc/view.c | 24 +++++++++--------------- 1 file changed, 9 insertions(+), 15 deletions(-) diff --git a/ntoskrnl/cc/view.c b/ntoskrnl/cc/view.c index 0e07eb7f1b6..de4a75ea8f7 100644 --- a/ntoskrnl/cc/view.c +++ b/ntoskrnl/cc/view.c @@ -388,7 +388,6 @@ CcRosMarkDirtyVacb ( { KIRQL oldIrql; PROS_SHARED_CACHE_MAP SharedCacheMap; - ULONG Length = VACB_MAPPING_GRANULARITY; SharedCacheMap = Vacb->SharedCacheMap; @@ -398,12 +397,9 @@ CcRosMarkDirtyVacb ( ASSERT(!Vacb->Dirty); InsertTailList(&DirtyVacbListHead, &Vacb->DirtyVacbListEntry); -#if 0 - if (Vacb->FileOffset.QuadPart + Length > SharedCacheMap->SectionSize.QuadPart) - Length = SharedCacheMap->SectionSize.QuadPart - Vacb->FileOffset.QuadPart; -#endif - CcTotalDirtyPages += PAGE_ROUND_UP(Length) / PAGE_SIZE; - Vacb->SharedCacheMap->DirtyPages += PAGE_ROUND_UP(Length) / PAGE_SIZE; + /* FIXME: There is no reason to account for the whole VACB. */ + CcTotalDirtyPages += VACB_MAPPING_GRANULARITY / PAGE_SIZE; + Vacb->SharedCacheMap->DirtyPages += VACB_MAPPING_GRANULARITY / PAGE_SIZE; CcRosVacbIncRefCount(Vacb); /* Move to the tail of the LRU list */ @@ -430,7 +426,6 @@ CcRosUnmarkDirtyVacb ( { KIRQL oldIrql; PROS_SHARED_CACHE_MAP SharedCacheMap; - ULONG Length = VACB_MAPPING_GRANULARITY; SharedCacheMap = Vacb->SharedCacheMap; @@ -447,12 +442,8 @@ CcRosUnmarkDirtyVacb ( RemoveEntryList(&Vacb->DirtyVacbListEntry); InitializeListHead(&Vacb->DirtyVacbListEntry); -#if 0 - if (Vacb->FileOffset.QuadPart + Length > SharedCacheMap->SectionSize.QuadPart) - Length = SharedCacheMap->SectionSize.QuadPart - Vacb->FileOffset.QuadPart; -#endif - CcTotalDirtyPages -= PAGE_ROUND_UP(Length) / PAGE_SIZE; - Vacb->SharedCacheMap->DirtyPages -= PAGE_ROUND_UP(Length) / PAGE_SIZE; + CcTotalDirtyPages -= VACB_MAPPING_GRANULARITY / PAGE_SIZE; + Vacb->SharedCacheMap->DirtyPages -= VACB_MAPPING_GRANULARITY / PAGE_SIZE; CcRosVacbDecRefCount(Vacb); @@ -718,8 +709,11 @@ CcRosEnsureVacbResident( ASSERT((Offset + Length) <= VACB_MAPPING_GRANULARITY); - if ((Vacb->FileOffset.QuadPart + Offset) > Vacb->SharedCacheMap->FileSize.QuadPart) + if ((Vacb->FileOffset.QuadPart + Offset) > Vacb->SharedCacheMap->SectionSize.QuadPart) + { + DPRINT1("Vacb read beyond the file size!\n"); return FALSE; + } BaseAddress = (PVOID)((ULONG_PTR)Vacb->BaseAddress + Offset);

3 years, 9 months

[reactos] 34/100: [NTOS/CC] Be more precise when notifying Mm about dirty pages

by Jérôme Gardou

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=c74cbf0c0bed7ae9831c2… commit c74cbf0c0bed7ae9831c23527931907de55379cc Author: Jérôme Gardou <jerome.gardou(a)reactos.org> AuthorDate: Wed Dec 2 12:30:48 2020 +0100 Commit: Jérôme Gardou <jerome.gardou(a)reactos.org> CommitDate: Wed Feb 3 09:41:22 2021 +0100 [NTOS/CC] Be more precise when notifying Mm about dirty pages --- ntoskrnl/cc/copy.c | 10 ++++++++++ ntoskrnl/cc/pin.c | 5 +++++ ntoskrnl/cc/view.c | 3 --- 3 files changed, 15 insertions(+), 3 deletions(-) diff --git a/ntoskrnl/cc/copy.c b/ntoskrnl/cc/copy.c index 17b7a366d17..f92040aa0b2 100644 --- a/ntoskrnl/cc/copy.c +++ b/ntoskrnl/cc/copy.c @@ -586,6 +586,11 @@ CcCopyWrite ( Buffer = (PVOID)((ULONG_PTR)Buffer + VacbLength); CurrentOffset += VacbLength; Length -= VacbLength; + + /* Tell Mm */ + Status = MmMakePagesDirty(NULL, Add2Ptr(Vacb->BaseAddress, VacbOffset), VacbLength); + if (!NT_SUCCESS(Status)) + ExRaiseStatus(Status); } _SEH2_FINALLY { @@ -829,6 +834,11 @@ CcZeroData ( WriteOffset.QuadPart += VacbLength; Length -= VacbLength; + + /* Tell Mm */ + Status = MmMakePagesDirty(NULL, Add2Ptr(Vacb->BaseAddress, VacbOffset), VacbLength); + if (!NT_SUCCESS(Status)) + ExRaiseStatus(Status); } _SEH2_FINALLY { diff --git a/ntoskrnl/cc/pin.c b/ntoskrnl/cc/pin.c index 189ba480305..0d5642b9932 100644 --- a/ntoskrnl/cc/pin.c +++ b/ntoskrnl/cc/pin.c @@ -540,6 +540,11 @@ CcSetDirtyPinnedData ( CCTRACE(CC_API_DEBUG, "Bcb=%p Lsn=%p\n", Bcb, Lsn); + /* Tell Mm */ + MmMakePagesDirty(NULL, + Add2Ptr(iBcb->Vacb->BaseAddress, iBcb->PFCB.MappedFileOffset.QuadPart - iBcb->Vacb->FileOffset.QuadPart), + iBcb->PFCB.MappedLength); + if (!iBcb->Vacb->Dirty) { CcRosMarkDirtyVacb(iBcb->Vacb); diff --git a/ntoskrnl/cc/view.c b/ntoskrnl/cc/view.c index a14635f2135..0e07eb7f1b6 100644 --- a/ntoskrnl/cc/view.c +++ b/ntoskrnl/cc/view.c @@ -420,9 +420,6 @@ CcRosMarkDirtyVacb ( CcScheduleLazyWriteScan(FALSE); } KeReleaseQueuedSpinLock(LockQueueMasterLock, oldIrql); - - /* Tell Mm */ - MmMakePagesDirty(NULL, Vacb->BaseAddress, Length); } VOID

3 years, 9 months

[reactos] 33/100: [NTOS:CC] Fix releasing VACB when an exception is raised in CcZeroData & CcCopyWrite

by Jérôme Gardou

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=c295d6b229fc679a38eae… commit c295d6b229fc679a38eaea2f0797b7ffb139478d Author: Jérôme Gardou <jerome.gardou(a)reactos.org> AuthorDate: Wed Dec 2 12:28:38 2020 +0100 Commit: Jérôme Gardou <jerome.gardou(a)reactos.org> CommitDate: Wed Feb 3 09:41:22 2021 +0100 [NTOS:CC] Fix releasing VACB when an exception is raised in CcZeroData & CcCopyWrite --- ntoskrnl/cc/copy.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/ntoskrnl/cc/copy.c b/ntoskrnl/cc/copy.c index ced4271fc9b..17b7a366d17 100644 --- a/ntoskrnl/cc/copy.c +++ b/ntoskrnl/cc/copy.c @@ -557,8 +557,9 @@ CcCopyWrite ( return FALSE; /* FIXME: Honor FileObject FO_WRITE_THROUGH flag */ + ASSERT((FileOffset->QuadPart + Length) <= SharedCacheMap->SectionSize.QuadPart); - ASSERT((FileOffset->QuadPart + Length) <= SharedCacheMap->FileSize.QuadPart); + ASSERT((FileObject->Flags & FO_WRITE_THROUGH) == 0); CurrentOffset = FileOffset->QuadPart; while(CurrentOffset < WriteEnd) @@ -577,7 +578,6 @@ CcCopyWrite ( { if (!CcRosEnsureVacbResident(Vacb, Wait, FALSE, VacbOffset, VacbLength)) { - CcRosReleaseVacb(SharedCacheMap, Vacb, TRUE, FALSE, FALSE); return FALSE; } @@ -589,7 +589,8 @@ CcCopyWrite ( } _SEH2_FINALLY { - CcRosReleaseVacb(SharedCacheMap, Vacb, TRUE, TRUE, FALSE); + /* Do not mark the VACB as dirty if an exception was raised */ + CcRosReleaseVacb(SharedCacheMap, Vacb, TRUE, !_SEH2_AbnormalTermination(), FALSE); } _SEH2_END; } @@ -821,7 +822,6 @@ CcZeroData ( { if (!CcRosEnsureVacbResident(Vacb, Wait, FALSE, VacbOffset, VacbLength)) { - CcRosReleaseVacb(SharedCacheMap, Vacb, TRUE, FALSE, FALSE); return FALSE; } @@ -832,7 +832,8 @@ CcZeroData ( } _SEH2_FINALLY { - CcRosReleaseVacb(SharedCacheMap, Vacb, TRUE, TRUE, FALSE); + /* Do not mark the VACB as dirty if an exception was raised */ + CcRosReleaseVacb(SharedCacheMap, Vacb, TRUE, !_SEH2_AbnormalTermination(), FALSE); } _SEH2_END; }

3 years, 9 months

[reactos] 32/100: [NTOS:CC] Rewrite the non-cached path of CcZeroData

by Jérôme Gardou

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=7f47f032969cac0eaaf32… commit 7f47f032969cac0eaaf3246a3e0ae9da3008aeb1 Author: Jérôme Gardou <jerome.gardou(a)reactos.org> AuthorDate: Wed Dec 2 12:27:32 2020 +0100 Commit: Jérôme Gardou <jerome.gardou(a)reactos.org> CommitDate: Wed Feb 3 09:41:22 2021 +0100 [NTOS:CC] Rewrite the non-cached path of CcZeroData --- ntoskrnl/cc/copy.c | 35 +++++++++++++++++++---------------- 1 file changed, 19 insertions(+), 16 deletions(-) diff --git a/ntoskrnl/cc/copy.c b/ntoskrnl/cc/copy.c index 5bb14cc210a..ced4271fc9b 100644 --- a/ntoskrnl/cc/copy.c +++ b/ntoskrnl/cc/copy.c @@ -759,25 +759,25 @@ CcZeroData ( PMDL Mdl; ULONG i; ULONG CurrentLength; + PPFN_NUMBER PfnArray; - Mdl = _alloca(MmSizeOfMdl(NULL, MAX_ZERO_LENGTH)); + /* Setup our Mdl */ + Mdl = IoAllocateMdl(NULL, min(Length, MAX_ZERO_LENGTH), FALSE, FALSE, NULL); + if (!Mdl) + ExRaiseStatus(STATUS_INSUFFICIENT_RESOURCES); + PfnArray = MmGetMdlPfnArray(Mdl); + for (i = 0; i < BYTES_TO_PAGES(Mdl->ByteCount); i++) + PfnArray[i] = CcZeroPage; + Mdl->MdlFlags |= MDL_PAGES_LOCKED; + + /* Perform the write sequencially */ while (Length > 0) { - if (Length + WriteOffset.QuadPart % PAGE_SIZE > MAX_ZERO_LENGTH) - { - CurrentLength = MAX_ZERO_LENGTH - WriteOffset.QuadPart % PAGE_SIZE; - } - else - { - CurrentLength = Length; - } - MmInitializeMdl(Mdl, (PVOID)(ULONG_PTR)WriteOffset.QuadPart, CurrentLength); - Mdl->MdlFlags |= MDL_PAGES_LOCKED; - for (i = 0; i < ((Mdl->Size - sizeof(MDL)) / sizeof(ULONG)); i++) - { - ((PPFN_NUMBER)(Mdl + 1))[i] = CcZeroPage; - } + CurrentLength = min(Length, MAX_ZERO_LENGTH); + + Mdl->ByteCount = CurrentLength; + KeInitializeEvent(&Event, NotificationEvent, FALSE); Status = IoSynchronousPageWrite(FileObject, Mdl, &WriteOffset, &Event, &Iosb); if (Status == STATUS_PENDING) @@ -791,12 +791,15 @@ CcZeroData ( } if (!NT_SUCCESS(Status)) { - return FALSE; + IoFreeMdl(Mdl); + ExRaiseStatus(Status); } WriteOffset.QuadPart += CurrentLength; Length -= CurrentLength; } + IoFreeMdl(Mdl); + return TRUE; }

3 years, 9 months

[reactos] 31/100: [NTOS:CC] Remove unused functions

by Jérôme Gardou

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=36e18aab35049f5e4cb36… commit 36e18aab35049f5e4cb36d0751993f9af40e27cd Author: Jérôme Gardou <jerome.gardou(a)reactos.org> AuthorDate: Wed Dec 2 12:14:49 2020 +0100 Commit: Jérôme Gardou <jerome.gardou(a)reactos.org> CommitDate: Wed Feb 3 09:41:22 2021 +0100 [NTOS:CC] Remove unused functions --- ntoskrnl/cc/view.c | 59 ------------------------------------------ ntoskrnl/include/internal/cc.h | 15 ----------- 2 files changed, 74 deletions(-) diff --git a/ntoskrnl/cc/view.c b/ntoskrnl/cc/view.c index ddbe77e22af..a14635f2135 100644 --- a/ntoskrnl/cc/view.c +++ b/ntoskrnl/cc/view.c @@ -466,65 +466,6 @@ CcRosUnmarkDirtyVacb ( } } -NTSTATUS -NTAPI -CcRosMarkDirtyFile ( - PROS_SHARED_CACHE_MAP SharedCacheMap, - LONGLONG FileOffset) -{ - PROS_VACB Vacb; - - ASSERT(SharedCacheMap); - - DPRINT("CcRosMarkDirtyVacb(SharedCacheMap 0x%p, FileOffset %I64u)\n", - SharedCacheMap, FileOffset); - - Vacb = CcRosLookupVacb(SharedCacheMap, FileOffset); - if (Vacb == NULL) - { - KeBugCheck(CACHE_MANAGER); - } - - CcRosReleaseVacb(SharedCacheMap, Vacb, Vacb->Valid, TRUE, FALSE); - - return STATUS_SUCCESS; -} - -/* - * Note: this is not the contrary function of - * CcRosMapVacbInKernelSpace() - */ -NTSTATUS -NTAPI -CcRosUnmapVacb ( - PROS_SHARED_CACHE_MAP SharedCacheMap, - LONGLONG FileOffset, - BOOLEAN NowDirty) -{ - PROS_VACB Vacb; - - ASSERT(SharedCacheMap); - - DPRINT("CcRosUnmapVacb(SharedCacheMap 0x%p, FileOffset %I64u, NowDirty %u)\n", - SharedCacheMap, FileOffset, NowDirty); - - Vacb = CcRosLookupVacb(SharedCacheMap, FileOffset); - if (Vacb == NULL) - { - return STATUS_UNSUCCESSFUL; - } - - ASSERT(Vacb->MappedCount != 0); - if (InterlockedDecrement((PLONG)&Vacb->MappedCount) == 0) - { - CcRosVacbDecRefCount(Vacb); - } - - CcRosReleaseVacb(SharedCacheMap, Vacb, Vacb->Valid, NowDirty, FALSE); - - return STATUS_SUCCESS; -} - static BOOLEAN CcRosFreeUnusedVacb ( diff --git a/ntoskrnl/include/internal/cc.h b/ntoskrnl/include/internal/cc.h index 9e186a61d11..862a759ef7a 100644 --- a/ntoskrnl/include/internal/cc.h +++ b/ntoskrnl/include/internal/cc.h @@ -342,14 +342,6 @@ BOOLEAN NTAPI CcInitializeCacheManager(VOID); -NTSTATUS -NTAPI -CcRosUnmapVacb( - PROS_SHARED_CACHE_MAP SharedCacheMap, - LONGLONG FileOffset, - BOOLEAN NowDirty -); - PROS_VACB NTAPI CcRosLookupVacb( @@ -361,13 +353,6 @@ VOID NTAPI CcInitCacheZeroPage(VOID); -NTSTATUS -NTAPI -CcRosMarkDirtyFile( - PROS_SHARED_CACHE_MAP SharedCacheMap, - LONGLONG FileOffset -); - VOID NTAPI CcRosMarkDirtyVacb(

3 years, 9 months

[reactos] 30/100: [NTOS/MM] Force flushing when the page is dirtified in user mode

by Jérôme Gardou

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=7dab3583cc4c80304df61… commit 7dab3583cc4c80304df61658fe4b1eeea8983f5e Author: Jérôme Gardou <jerome.gardou(a)reactos.org> AuthorDate: Wed Dec 2 12:12:11 2020 +0100 Commit: Jérôme Gardou <jerome.gardou(a)reactos.org> CommitDate: Wed Feb 3 09:41:22 2021 +0100 [NTOS/MM] Force flushing when the page is dirtified in user mode --- ntoskrnl/mm/section.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/ntoskrnl/mm/section.c b/ntoskrnl/mm/section.c index f3b30dedaed..6dcf764d7a1 100644 --- a/ntoskrnl/mm/section.c +++ b/ntoskrnl/mm/section.c @@ -4620,7 +4620,7 @@ MmRosFlushVirtualMemory( if (Entry != 0) { /* This will write the page to disk, if needed */ - MmCheckDirtySegment(Segment, &SegmentOffset, MmIsDirtyPage(Process, CurrentAddress), FALSE); + MmCheckDirtySegment(Segment, &SegmentOffset, Process ? MmIsDirtyPage(Process, CurrentAddress) : FALSE, FALSE); Iosb->Information += PAGE_SIZE; } SegmentOffset.QuadPart += PAGE_SIZE; @@ -4694,7 +4694,10 @@ MmCheckDirtySegment( /* Drop the reference we got */ Entry = MAKE_SSE(Page << PAGE_SHIFT, SHARE_COUNT_FROM_SSE(Entry) - 1); - if (DirtyAgain) Entry = DIRTY_SSE(Entry); + if (DirtyAgain) + { + Entry = DIRTY_SSE(Entry); + } MmSetPageEntrySectionSegment(Segment, Offset, Entry); }

3 years, 9 months

[reactos] 29/100: [NTOS:MM] Do not limit ourselves in reading or writing the file

by Jérôme Gardou

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=91edefa11e4d7230155dc… commit 91edefa11e4d7230155dcaafe052a6fd10d7dd57 Author: Jérôme Gardou <jerome.gardou(a)reactos.org> AuthorDate: Wed Dec 2 11:40:25 2020 +0100 Commit: Jérôme Gardou <jerome.gardou(a)reactos.org> CommitDate: Wed Feb 3 09:41:22 2021 +0100 [NTOS:MM] Do not limit ourselves in reading or writing the file --- ntoskrnl/mm/section.c | 16 ++++------------ 1 file changed, 4 insertions(+), 12 deletions(-) diff --git a/ntoskrnl/mm/section.c b/ntoskrnl/mm/section.c index 8df9b99cfb8..f3b30dedaed 100644 --- a/ntoskrnl/mm/section.c +++ b/ntoskrnl/mm/section.c @@ -214,16 +214,9 @@ MiWritePage(PMM_SECTION_SEGMENT Segment, PMDL Mdl = (PMDL)MdlBase; PFILE_OBJECT FileObject = Segment->FileObject; LARGE_INTEGER FileOffset; - PFSRTL_COMMON_FCB_HEADER Fcb = FileObject->FsContext; FileOffset.QuadPart = Segment->Image.FileOffset + SegOffset; - /* Check if we are not writing off-limit */ - if (FileOffset.QuadPart >= Fcb->AllocationSize.QuadPart) - { - return STATUS_SUCCESS; - } - RtlZeroMemory(MdlBase, sizeof(MdlBase)); MmInitializeMdl(Mdl, NULL, PAGE_SIZE); MmBuildMdlFromPages(Mdl, &Page); @@ -1179,18 +1172,15 @@ MiReadPage(PMEMORY_AREA MemoryArea, PMDL Mdl = (PMDL)MdlBase; PFILE_OBJECT FileObject = MemoryArea->SectionData.Segment->FileObject; LARGE_INTEGER FileOffset; - PFSRTL_COMMON_FCB_HEADER Fcb = FileObject->FsContext; FileOffset.QuadPart = MemoryArea->SectionData.Segment->Image.FileOffset + SegOffset; + DPRINT("Reading file at offset %08x:%08x\n", FileOffset.HighPart, FileOffset.LowPart); + Status = MmRequestPageMemoryConsumer(MC_USER, FALSE, Page); if (!NT_SUCCESS(Status)) return Status; - /* Check if we are beyond the file */ - if (FileOffset.QuadPart > Fcb->FileSize.QuadPart) - return STATUS_SUCCESS; - RtlZeroMemory(MdlBase, sizeof(MdlBase)); MmInitializeMdl(Mdl, NULL, PAGE_SIZE); MmBuildMdlFromPages(Mdl, Page); @@ -1204,6 +1194,7 @@ MiReadPage(PMEMORY_AREA MemoryArea, KeWaitForSingleObject(&Event, WrPageIn, KernelMode, FALSE, NULL); Status = IoStatus.Status; } + if (Mdl->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA) { MmUnmapLockedPages (Mdl->MappedSystemVa, Mdl); @@ -4539,6 +4530,7 @@ MmMakePagesResident( MmUnlockAddressSpace(AddressSpace); /* FIXME: Read the whole range at once instead of one page at a time */ + /* Ignore file size, as Cc already checked on its side. */ Status = MiReadPage(MemoryArea, SegmentOffset.QuadPart, &Page); if (!NT_SUCCESS(Status)) {

3 years, 9 months

[reactos] 28/100: [FASTFAT_NEW] Enable the driver

by Jérôme Gardou

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=c05f3d8d1ce5641f1768e… commit c05f3d8d1ce5641f1768ecd775a375a34e368cf9 Author: Jérôme Gardou <jerome.gardou(a)reactos.org> AuthorDate: Wed Dec 2 11:17:59 2020 +0100 Commit: Jérôme Gardou <jerome.gardou(a)reactos.org> CommitDate: Wed Feb 3 09:41:22 2021 +0100 [FASTFAT_NEW] Enable the driver --- drivers/filesystems/CMakeLists.txt | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/filesystems/CMakeLists.txt b/drivers/filesystems/CMakeLists.txt index 7485d433b5a..3d5277dfa74 100644 --- a/drivers/filesystems/CMakeLists.txt +++ b/drivers/filesystems/CMakeLists.txt @@ -2,7 +2,8 @@ add_subdirectory(btrfs) add_subdirectory(cdfs) add_subdirectory(ext2) -add_subdirectory(fastfat) +#add_subdirectory(fastfat) +add_subdirectory(fastfat_new) add_subdirectory(ffs) add_subdirectory(fs_rec) add_subdirectory(msfs)

3 years, 9 months

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Ros-diffs February 2021