fix indentation Modified: trunk/reactos/drivers/fs/vfat/create.c _____
Modified: trunk/reactos/drivers/fs/vfat/create.c --- trunk/reactos/drivers/fs/vfat/create.c 2005-11-04 00:03:34 UTC (rev 18979) +++ trunk/reactos/drivers/fs/vfat/create.c 2005-11-04 00:07:47 UTC (rev 18980) @@ -31,60 +31,61 @@
/* FUNCTIONS *****************************************************************/
-void vfat8Dot3ToString (PFAT_DIR_ENTRY pEntry, PUNICODE_STRING NameU) +void +vfat8Dot3ToString (PFAT_DIR_ENTRY pEntry, PUNICODE_STRING NameU) { - OEM_STRING StringA; - USHORT Length; - CHAR cString[12]; - - RtlCopyMemory(cString, pEntry->ShortName, 11); - cString[11] = 0; - if (cString[0] == 0x05) - { - cString[0] = 0xe5; - } - - StringA.Buffer = cString; - for (StringA.Length = 0; - StringA.Length < 8 && StringA.Buffer[StringA.Length] != ' '; - StringA.Length++); - StringA.MaximumLength = StringA.Length; - - RtlOemStringToUnicodeString(NameU, &StringA, FALSE); - - if (pEntry->lCase & VFAT_CASE_LOWER_BASE) - { - RtlDowncaseUnicodeString(NameU, NameU, FALSE); - } - if (cString[8] != ' ') - { - Length = NameU->Length; - NameU->Buffer += Length / sizeof(WCHAR); - if (!FAT_ENTRY_VOLUME(pEntry)) - { - Length += sizeof(WCHAR); - NameU->Buffer[0] = L'.'; - NameU->Buffer++; + OEM_STRING StringA; + USHORT Length; + CHAR cString[12]; + + RtlCopyMemory(cString, pEntry->ShortName, 11); + cString[11] = 0; + if (cString[0] == 0x05) + { + cString[0] = 0xe5; } - NameU->Length = 0; - NameU->MaximumLength -= Length; - - StringA.Buffer = &cString[8]; - for (StringA.Length = 0; - StringA.Length < 3 && StringA.Buffer[StringA.Length] != ' '; - StringA.Length++); - StringA.MaximumLength = StringA.Length; - RtlOemStringToUnicodeString(NameU, &StringA, FALSE); - if (pEntry->lCase & VFAT_CASE_LOWER_EXT) - { - RtlDowncaseUnicodeString(NameU, NameU, FALSE); - } - NameU->Buffer -= Length / sizeof(WCHAR); - NameU->Length += Length; - NameU->MaximumLength += Length; - } - NameU->Buffer[NameU->Length / sizeof(WCHAR)] = 0; - DPRINT("'%wZ'\n", NameU); + + StringA.Buffer = cString; + for (StringA.Length = 0; + StringA.Length < 8 && StringA.Buffer[StringA.Length] != ' '; + StringA.Length++); + StringA.MaximumLength = StringA.Length; + + RtlOemStringToUnicodeString(NameU, &StringA, FALSE); + + if (pEntry->lCase & VFAT_CASE_LOWER_BASE) + { + RtlDowncaseUnicodeString(NameU, NameU, FALSE); + } + if (cString[8] != ' ') + { + Length = NameU->Length; + NameU->Buffer += Length / sizeof(WCHAR); + if (!FAT_ENTRY_VOLUME(pEntry)) + { + Length += sizeof(WCHAR); + NameU->Buffer[0] = L'.'; + NameU->Buffer++; + } + NameU->Length = 0; + NameU->MaximumLength -= Length; + + StringA.Buffer = &cString[8]; + for (StringA.Length = 0; + StringA.Length < 3 && StringA.Buffer[StringA.Length] != ' '; + StringA.Length++); + StringA.MaximumLength = StringA.Length; + RtlOemStringToUnicodeString(NameU, &StringA, FALSE); + if (pEntry->lCase & VFAT_CASE_LOWER_EXT) + { + RtlDowncaseUnicodeString(NameU, NameU, FALSE); + } + NameU->Buffer -= Length / sizeof(WCHAR); + NameU->Length += Length; + NameU->MaximumLength += Length; + } + NameU->Buffer[NameU->Length / sizeof(WCHAR)] = 0; + DPRINT("'%wZ'\n", NameU); }
NTSTATUS @@ -93,680 +94,685 @@ * FUNCTION: Read the volume label */ { - PVOID Context = NULL; - ULONG DirIndex = 0; - PDIR_ENTRY Entry; - PVFATFCB pFcb; - LARGE_INTEGER FileOffset; - UNICODE_STRING NameU; - ULONG SizeDirEntry; - ULONG EntriesPerPage; - OEM_STRING StringO; - - NameU.Buffer = Vpb->VolumeLabel; - NameU.Length = 0; - NameU.MaximumLength = sizeof(Vpb->VolumeLabel); - *(Vpb->VolumeLabel) = 0; - Vpb->VolumeLabelLength = 0; - - if (DeviceExt->Flags & VCB_IS_FATX) - { - SizeDirEntry = sizeof(FATX_DIR_ENTRY); - EntriesPerPage = FATX_ENTRIES_PER_PAGE; - } - else - { - SizeDirEntry = sizeof(FAT_DIR_ENTRY); - EntriesPerPage = FAT_ENTRIES_PER_PAGE; - } - - ExAcquireResourceExclusiveLite (&DeviceExt->DirResource, TRUE); - pFcb = vfatOpenRootFCB (DeviceExt); - ExReleaseResourceLite (&DeviceExt->DirResource); - - FileOffset.QuadPart = 0; - if (CcMapData(pFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, &Context, (PVOID*)&Entry)) - { - while (TRUE) - { - if (ENTRY_VOLUME(DeviceExt, Entry)) - { - /* copy volume label */ - if (DeviceExt->Flags & VCB_IS_FATX) - { - StringO.Buffer = (PCHAR)Entry->FatX.Filename; - StringO.MaximumLength = StringO.Length = Entry->FatX.FilenameLength; - RtlOemStringToUnicodeString(&NameU, &StringO, FALSE); - } - else - { - vfat8Dot3ToString (&Entry->Fat, &NameU); - } - Vpb->VolumeLabelLength = NameU.Length; - break; - } - if (ENTRY_END(DeviceExt, Entry)) - { - break; - } - DirIndex++; - Entry = (PDIR_ENTRY)((ULONG_PTR)Entry + SizeDirEntry); - if ((DirIndex % EntriesPerPage) == 0) - { - CcUnpinData(Context); - FileOffset.u.LowPart += PAGE_SIZE; - if (!CcMapData(pFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, &Context, (PVOID*)&Entry)) - { - Context = NULL; - break; - } - } - } - if (Context) - { - CcUnpinData(Context); - } - } - ExAcquireResourceExclusiveLite (&DeviceExt->DirResource, TRUE); - vfatReleaseFCB (DeviceExt, pFcb); - ExReleaseResourceLite (&DeviceExt->DirResource); - - return STATUS_SUCCESS; + PVOID Context = NULL; + ULONG DirIndex = 0; + PDIR_ENTRY Entry; + PVFATFCB pFcb; + LARGE_INTEGER FileOffset; + UNICODE_STRING NameU; + ULONG SizeDirEntry; + ULONG EntriesPerPage; + OEM_STRING StringO; + + NameU.Buffer = Vpb->VolumeLabel; + NameU.Length = 0; + NameU.MaximumLength = sizeof(Vpb->VolumeLabel); + *(Vpb->VolumeLabel) = 0; + Vpb->VolumeLabelLength = 0; + + if (DeviceExt->Flags & VCB_IS_FATX) + { + SizeDirEntry = sizeof(FATX_DIR_ENTRY); + EntriesPerPage = FATX_ENTRIES_PER_PAGE; + } + else + { + SizeDirEntry = sizeof(FAT_DIR_ENTRY); + EntriesPerPage = FAT_ENTRIES_PER_PAGE; + } + + ExAcquireResourceExclusiveLite (&DeviceExt->DirResource, TRUE); + pFcb = vfatOpenRootFCB (DeviceExt); + ExReleaseResourceLite (&DeviceExt->DirResource); + + FileOffset.QuadPart = 0; + if (CcMapData(pFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, &Context, (PVOID*)&Entry)) + { + while (TRUE) + { + if (ENTRY_VOLUME(DeviceExt, Entry)) + { + /* copy volume label */ + if (DeviceExt->Flags & VCB_IS_FATX) + { + StringO.Buffer = (PCHAR)Entry->FatX.Filename; + StringO.MaximumLength = StringO.Length = Entry->FatX.FilenameLength; + RtlOemStringToUnicodeString(&NameU, &StringO, FALSE); + } + else + { + vfat8Dot3ToString (&Entry->Fat, &NameU); + } + Vpb->VolumeLabelLength = NameU.Length; + break; + } + if (ENTRY_END(DeviceExt, Entry)) + { + break; + } + DirIndex++; + Entry = (PDIR_ENTRY)((ULONG_PTR)Entry + SizeDirEntry); + if ((DirIndex % EntriesPerPage) == 0) + { + CcUnpinData(Context); + FileOffset.u.LowPart += PAGE_SIZE; + if (!CcMapData(pFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, &Context, (PVOID*)&Entry)) + { + Context = NULL; + break; + } + } + } + if (Context) + { + CcUnpinData(Context); + } + } + ExAcquireResourceExclusiveLite (&DeviceExt->DirResource, TRUE); + vfatReleaseFCB (DeviceExt, pFcb); + ExReleaseResourceLite (&DeviceExt->DirResource); + + return STATUS_SUCCESS; }
NTSTATUS -FindFile (PDEVICE_EXTENSION DeviceExt, - PVFATFCB Parent, - PUNICODE_STRING FileToFindU, - PVFAT_DIRENTRY_CONTEXT DirContext, - BOOLEAN First) +FindFile ( + PDEVICE_EXTENSION DeviceExt, + PVFATFCB Parent, + PUNICODE_STRING FileToFindU, + PVFAT_DIRENTRY_CONTEXT DirContext, + BOOLEAN First) /* * FUNCTION: Find a file */ { - PWCHAR PathNameBuffer; - USHORT PathNameBufferLength; - NTSTATUS Status; - PVOID Context = NULL; - PVOID Page; - PVFATFCB rcFcb; - BOOLEAN Found; - UNICODE_STRING PathNameU; - UNICODE_STRING FileToFindUpcase; - BOOLEAN WildCard; - - DPRINT ("FindFile(Parent %x, FileToFind '%wZ', DirIndex: %d)\n", - Parent, FileToFindU, DirContext->DirIndex); - DPRINT ("FindFile: Path %wZ)\n",&Parent->PathNameU); - - PathNameBufferLength = LONGNAME_MAX_LENGTH * sizeof(WCHAR); - PathNameBuffer = ExAllocatePool(NonPagedPool, PathNameBufferLength + sizeof(WCHAR)); - if (!PathNameBuffer) - { - CHECKPOINT1; - return STATUS_INSUFFICIENT_RESOURCES; - } - - PathNameU.Buffer = PathNameBuffer; - PathNameU.Length = 0; - PathNameU.MaximumLength = PathNameBufferLength; - - DirContext->LongNameU.Length = 0; - DirContext->ShortNameU.Length = 0; - - WildCard = FsRtlDoesNameContainWildCards(FileToFindU); - - if (WildCard == FALSE) - { - /* if there is no '*?' in the search name, than look first for an existing fcb */ - RtlCopyUnicodeString(&PathNameU, &Parent->PathNameU); - if (!vfatFCBIsRoot(Parent)) - { - PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR)] = L'\'; - PathNameU.Length += sizeof(WCHAR); - } - RtlAppendUnicodeStringToString(&PathNameU, FileToFindU); - PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR)] = 0; - rcFcb = vfatGrabFCBFromTable(DeviceExt, &PathNameU); - if (rcFcb) - { - ULONG startIndex = rcFcb->startIndex; - if ((rcFcb->Flags & FCB_IS_FATX_ENTRY) && !vfatFCBIsRoot(Parent)) - { - startIndex += 2; - } - if(startIndex >= DirContext->DirIndex) - { - RtlCopyUnicodeString(&DirContext->LongNameU, &rcFcb->LongNameU); - RtlCopyUnicodeString(&DirContext->ShortNameU, &rcFcb->ShortNameU); - RtlCopyMemory(&DirContext->DirEntry, &rcFcb->entry, sizeof(DIR_ENTRY)); - DirContext->StartIndex = rcFcb->startIndex; - DirContext->DirIndex = rcFcb->dirIndex; - DPRINT("FindFile: new Name %wZ, DirIndex %d (%d)\n", - &DirContext->LongNameU, DirContext->DirIndex, DirContext->StartIndex); - Status = STATUS_SUCCESS; - } - else - { - CHECKPOINT1; - Status = STATUS_UNSUCCESSFUL; - } - vfatReleaseFCB(DeviceExt, rcFcb); - ExFreePool(PathNameBuffer); - return Status; + PWCHAR PathNameBuffer; + USHORT PathNameBufferLength; + NTSTATUS Status; + PVOID Context = NULL; + PVOID Page; + PVFATFCB rcFcb; + BOOLEAN Found; + UNICODE_STRING PathNameU; + UNICODE_STRING FileToFindUpcase; + BOOLEAN WildCard; + + DPRINT ("FindFile(Parent %x, FileToFind '%wZ', DirIndex: %d)\n", + Parent, FileToFindU, DirContext->DirIndex); + DPRINT ("FindFile: Path %wZ)\n",&Parent->PathNameU); + + PathNameBufferLength = LONGNAME_MAX_LENGTH * sizeof(WCHAR); + PathNameBuffer = ExAllocatePool(NonPagedPool, PathNameBufferLength + sizeof(WCHAR)); + if (!PathNameBuffer) + { + CHECKPOINT1; + return STATUS_INSUFFICIENT_RESOURCES; } - } - - /* FsRtlIsNameInExpression need the searched string to be upcase, - * even if IgnoreCase is specified */ - Status = RtlUpcaseUnicodeString(&FileToFindUpcase, FileToFindU, TRUE); - if (!NT_SUCCESS(Status)) - { - CHECKPOINT; - ExFreePool(PathNameBuffer); - return Status; - } - - while(TRUE) - { - Status = DeviceExt->GetNextDirEntry(&Context, &Page, Parent, DirContext, First); - First = FALSE; - if (Status == STATUS_NO_MORE_ENTRIES) - { - break; - } - if (ENTRY_VOLUME(DeviceExt, &DirContext->DirEntry)) - { - DirContext->DirIndex++; - continue; - } - if (WildCard) - { - Found = FsRtlIsNameInExpression(&FileToFindUpcase, &DirContext->LongNameU, TRUE, NULL) || - FsRtlIsNameInExpression(&FileToFindUpcase, &DirContext->ShortNameU, TRUE, NULL); + + PathNameU.Buffer = PathNameBuffer; + PathNameU.Length = 0; + PathNameU.MaximumLength = PathNameBufferLength; + + DirContext->LongNameU.Length = 0; + DirContext->ShortNameU.Length = 0; + + WildCard = FsRtlDoesNameContainWildCards(FileToFindU); + + if (WildCard == FALSE) + { + /* if there is no '*?' in the search name, than look first for an existing fcb */ + RtlCopyUnicodeString(&PathNameU, &Parent->PathNameU); + if (!vfatFCBIsRoot(Parent)) + { + PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR)] = L'\'; + PathNameU.Length += sizeof(WCHAR); + } + RtlAppendUnicodeStringToString(&PathNameU, FileToFindU); + PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR)] = 0; + rcFcb = vfatGrabFCBFromTable(DeviceExt, &PathNameU); + if (rcFcb) + { + ULONG startIndex = rcFcb->startIndex; + if ((rcFcb->Flags & FCB_IS_FATX_ENTRY) && !vfatFCBIsRoot(Parent)) + { + startIndex += 2; + } + if(startIndex >= DirContext->DirIndex) + { + RtlCopyUnicodeString(&DirContext->LongNameU, &rcFcb->LongNameU); + RtlCopyUnicodeString(&DirContext->ShortNameU, &rcFcb->ShortNameU); + RtlCopyMemory(&DirContext->DirEntry, &rcFcb->entry, sizeof(DIR_ENTRY)); + DirContext->StartIndex = rcFcb->startIndex; + DirContext->DirIndex = rcFcb->dirIndex; + DPRINT("FindFile: new Name %wZ, DirIndex %d (%d)\n", + &DirContext->LongNameU, DirContext->DirIndex, DirContext->StartIndex); + Status = STATUS_SUCCESS; + } + else + { + CHECKPOINT1; + Status = STATUS_UNSUCCESSFUL; + } + vfatReleaseFCB(DeviceExt, rcFcb); + ExFreePool(PathNameBuffer); + return Status; + } } - else - { - Found = FsRtlAreNamesEqual(&DirContext->LongNameU, FileToFindU, TRUE, NULL) || - FsRtlAreNamesEqual(&DirContext->ShortNameU, FileToFindU, TRUE, NULL); + + /* FsRtlIsNameInExpression need the searched string to be upcase, + * even if IgnoreCase is specified */ + Status = RtlUpcaseUnicodeString(&FileToFindUpcase, FileToFindU, TRUE); + if (!NT_SUCCESS(Status)) + { + CHECKPOINT; + ExFreePool(PathNameBuffer); + return Status; } - - if (Found) - { - if (WildCard) - { - RtlCopyUnicodeString(&PathNameU, &Parent->PathNameU); - if (!vfatFCBIsRoot(Parent)) - { - PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR)] = L'\'; - PathNameU.Length += sizeof(WCHAR); - } - RtlAppendUnicodeStringToString(&PathNameU, &DirContext->LongNameU); - PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR)] = 0; - rcFcb = vfatGrabFCBFromTable(DeviceExt, &PathNameU); - if (rcFcb != NULL) - { - RtlCopyMemory(&DirContext->DirEntry, &rcFcb->entry, sizeof(DIR_ENTRY)); - vfatReleaseFCB(DeviceExt, rcFcb); + + while(TRUE) + { + Status = DeviceExt->GetNextDirEntry(&Context, &Page, Parent, DirContext, First); + First = FALSE; + if (Status == STATUS_NO_MORE_ENTRIES) + { + break; } - } - DPRINT("%d\n", DirContext->LongNameU.Length); - DPRINT("FindFile: new Name %wZ, DirIndex %d\n", - &DirContext->LongNameU, DirContext->DirIndex); - - if (Context) - { - CcUnpinData(Context); - } - RtlFreeUnicodeString(&FileToFindUpcase); - ExFreePool(PathNameBuffer); - return STATUS_SUCCESS; + if (ENTRY_VOLUME(DeviceExt, &DirContext->DirEntry)) + { + DirContext->DirIndex++; + continue; + } + if (WildCard) + { + Found = FsRtlIsNameInExpression(&FileToFindUpcase, &DirContext->LongNameU, TRUE, NULL) || + FsRtlIsNameInExpression(&FileToFindUpcase, &DirContext->ShortNameU, TRUE, NULL); + } + else + { + Found = FsRtlAreNamesEqual(&DirContext->LongNameU, FileToFindU, TRUE, NULL) || + FsRtlAreNamesEqual(&DirContext->ShortNameU, FileToFindU, TRUE, NULL); + } + + if (Found) + { + if (WildCard) + { + RtlCopyUnicodeString(&PathNameU, &Parent->PathNameU); + if (!vfatFCBIsRoot(Parent)) + { + PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR)] = L'\'; + PathNameU.Length += sizeof(WCHAR); + } + RtlAppendUnicodeStringToString(&PathNameU, &DirContext->LongNameU); + PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR)] = 0; + rcFcb = vfatGrabFCBFromTable(DeviceExt, &PathNameU); + if (rcFcb != NULL) + { + RtlCopyMemory(&DirContext->DirEntry, &rcFcb->entry, sizeof(DIR_ENTRY)); + vfatReleaseFCB(DeviceExt, rcFcb); + } + } + DPRINT("%d\n", DirContext->LongNameU.Length); + DPRINT("FindFile: new Name %wZ, DirIndex %d\n", + &DirContext->LongNameU, DirContext->DirIndex); + + if (Context) + { + CcUnpinData(Context); + } + RtlFreeUnicodeString(&FileToFindUpcase); + ExFreePool(PathNameBuffer); + return STATUS_SUCCESS; + } + DirContext->DirIndex++; } - DirContext->DirIndex++; - } - - if (Context) - { - CcUnpinData(Context); - } - - RtlFreeUnicodeString(&FileToFindUpcase); - ExFreePool(PathNameBuffer); - return Status; + + if (Context) + { + CcUnpinData(Context); + } + + RtlFreeUnicodeString(&FileToFindUpcase); + ExFreePool(PathNameBuffer); + return Status; }
NTSTATUS -VfatOpenFile (PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject, PVFATFCB* ParentFcb) +VfatOpenFile ( + PDEVICE_EXTENSION DeviceExt, + PFILE_OBJECT FileObject, + PVFATFCB* ParentFcb ) /* * FUNCTION: Opens a file */ { - PVFATFCB Fcb; - NTSTATUS Status; - UNICODE_STRING PathNameU; - WCHAR Buffer[260]; - - DPRINT ("VfatOpenFile(%08lx, %08lx, '%wZ')\n", DeviceExt, FileObject, &FileObject->FileName); - - if (FileObject->RelatedFileObject) - { - DPRINT ("'%wZ'\n", &FileObject->RelatedFileObject->FileName); - - *ParentFcb = FileObject->RelatedFileObject->FsContext; - (*ParentFcb)->RefCount++; - } - else - { - *ParentFcb = NULL; - } - - if (!DeviceExt->FatInfo.FixedMedia) - { - Status = VfatBlockDeviceIoControl (DeviceExt->StorageDevice, - IOCTL_DISK_CHECK_VERIFY, - NULL, - 0, - NULL, - 0, - FALSE); - - if (Status == STATUS_VERIFY_REQUIRED) - - { - PDEVICE_OBJECT DeviceToVerify; - - DPRINT ("Media change detected!\n"); - DPRINT ("Device %p\n", DeviceExt->StorageDevice); - - DeviceToVerify = IoGetDeviceToVerify (PsGetCurrentThread ()); - - IoSetDeviceToVerify (PsGetCurrentThread (), - NULL); - Status = IoVerifyVolume (DeviceExt->StorageDevice, - FALSE); + PVFATFCB Fcb; + NTSTATUS Status; + UNICODE_STRING PathNameU; + WCHAR Buffer[260]; + + DPRINT ("VfatOpenFile(%08lx, %08lx, '%wZ')\n", DeviceExt, FileObject, &FileObject->FileName); + + if (FileObject->RelatedFileObject) + { + DPRINT ("'%wZ'\n", &FileObject->RelatedFileObject->FileName); + + *ParentFcb = FileObject->RelatedFileObject->FsContext; + (*ParentFcb)->RefCount++; } - if (!NT_SUCCESS(Status)) + else { - DPRINT ("Status %lx\n", Status); - *ParentFcb = NULL; - return Status; + *ParentFcb = NULL; } - } - - if (*ParentFcb) - { - (*ParentFcb)->RefCount++; - } - - PathNameU.Buffer = Buffer; - PathNameU.Length = 0; - PathNameU.MaximumLength = sizeof(Buffer); - RtlCopyUnicodeString(&PathNameU, &FileObject->FileName); - if (PathNameU.Length > sizeof(WCHAR) && - PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR) - 1] == L'\') - { - PathNameU.Length -= sizeof(WCHAR); - } - PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR)] = 0; - - /* try first to find an existing FCB in memory */ - DPRINT ("Checking for existing FCB in memory\n"); - - Status = vfatGetFCBForFile (DeviceExt, ParentFcb, &Fcb, &PathNameU); - if (!NT_SUCCESS (Status)) - { - DPRINT ("Could not make a new FCB, status: %x\n", Status); - return Status; - } - if (Fcb->Flags & FCB_DELETE_PENDING) - { - vfatReleaseFCB (DeviceExt, Fcb); - return STATUS_DELETE_PENDING; - } - DPRINT ("Attaching FCB to fileObject\n"); - Status = vfatAttachFCBToFileObject (DeviceExt, Fcb, FileObject); - if (!NT_SUCCESS(Status)) - { - vfatReleaseFCB (DeviceExt, Fcb); - } - return Status; -} - -static NTSTATUS -VfatCreateFile (PDEVICE_OBJECT DeviceObject, PIRP Irp) -/* - * FUNCTION: Create or open a file - */ -{ - PIO_STACK_LOCATION Stack; - PFILE_OBJECT FileObject; - NTSTATUS Status = STATUS_SUCCESS; - PDEVICE_EXTENSION DeviceExt; - ULONG RequestedDisposition, RequestedOptions; - PVFATCCB pCcb; - PVFATFCB pFcb; - PVFATFCB ParentFcb; - PWCHAR c, last; - BOOLEAN PagingFileCreate = FALSE; - LARGE_INTEGER AllocationSize; - BOOLEAN Dots; - UNICODE_STRING FileNameU; - - /* Unpack the various parameters. */ - Stack = IoGetCurrentIrpStackLocation (Irp); - RequestedDisposition = ((Stack->Parameters.Create.Options >> 24) & 0xff); - RequestedOptions = - Stack->Parameters.Create.Options & FILE_VALID_OPTION_FLAGS; - PagingFileCreate = (Stack->Flags & SL_OPEN_PAGING_FILE) ? TRUE : FALSE; - FileObject = Stack->FileObject; - DeviceExt = DeviceObject->DeviceExtension; - - /* Check their validity. */ - if (RequestedOptions & FILE_DIRECTORY_FILE && - RequestedDisposition == FILE_SUPERSEDE) - { - return(STATUS_INVALID_PARAMETER); - } - - /* This a open operation for the volume itself */ - if (FileObject->FileName.Length == 0 && - FileObject->RelatedFileObject == NULL) - { - if (RequestedDisposition == FILE_CREATE || - RequestedDisposition == FILE_OVERWRITE_IF || - RequestedDisposition == FILE_SUPERSEDE) + + if (!DeviceExt->FatInfo.FixedMedia) { - return(STATUS_ACCESS_DENIED); + Status = VfatBlockDeviceIoControl (DeviceExt->StorageDevice, + IOCTL_DISK_CHECK_VERIFY, + NULL, + 0, + NULL, + 0, + FALSE); + + if (Status == STATUS_VERIFY_REQUIRED) + + { + PDEVICE_OBJECT DeviceToVerify; + + DPRINT ("Media change detected!\n"); + DPRINT ("Device %p\n", DeviceExt->StorageDevice); + + DeviceToVerify = IoGetDeviceToVerify (PsGetCurrentThread ()); + + IoSetDeviceToVerify (PsGetCurrentThread (), + NULL); + Status = IoVerifyVolume (DeviceExt->StorageDevice, + FALSE); + } + if (!NT_SUCCESS(Status)) + { + DPRINT ("Status %lx\n", Status); + *ParentFcb = NULL; + return Status; + } } - if (RequestedOptions & FILE_DIRECTORY_FILE) + + if (*ParentFcb) { - return(STATUS_NOT_A_DIRECTORY); + (*ParentFcb)->RefCount++; } - pFcb = DeviceExt->VolumeFcb; - pCcb = ExAllocateFromNPagedLookasideList(&VfatGlobalData->CcbLookasideList); - if (pCcb == NULL) + + PathNameU.Buffer = Buffer; + PathNameU.Length = 0; + PathNameU.MaximumLength = sizeof(Buffer); + RtlCopyUnicodeString(&PathNameU, &FileObject->FileName); + if (PathNameU.Length > sizeof(WCHAR) && + PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR) - 1] == L'\') { - return (STATUS_INSUFFICIENT_RESOURCES); + PathNameU.Length -= sizeof(WCHAR); } - RtlZeroMemory(pCcb, sizeof(VFATCCB)); - FileObject->SectionObjectPointer = &pFcb->SectionObjectPointers; - FileObject->FsContext = pFcb; - FileObject->FsContext2 = pCcb; - pFcb->RefCount++; - - Irp->IoStatus.Information = FILE_OPENED; - return(STATUS_SUCCESS); - } - - /* - * Check for illegal characters and illegale dot sequences in the file name - */ - c = FileObject->FileName.Buffer + FileObject->FileName.Length / sizeof(WCHAR); - last = c - 1; - Dots = TRUE; - while (c-- > FileObject->FileName.Buffer) - { - if (*c == L'\' || c == FileObject->FileName.Buffer) - { - if (Dots && last > c) - { - return(STATUS_OBJECT_NAME_INVALID); - } - last = c - 1; - Dots = TRUE; + PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR)] = 0; + + /* try first to find an existing FCB in memory */ + DPRINT ("Checking for existing FCB in memory\n"); + + Status = vfatGetFCBForFile (DeviceExt, ParentFcb, &Fcb, &PathNameU); + if (!NT_SUCCESS (Status)) + { + DPRINT ("Could not make a new FCB, status: %x\n", Status); + return Status; } - else if (*c != L'.') - { - Dots = FALSE; + if (Fcb->Flags & FCB_DELETE_PENDING) + { + vfatReleaseFCB (DeviceExt, Fcb); + return STATUS_DELETE_PENDING; } - - if (*c != '\' && vfatIsLongIllegal(*c)) - { - return(STATUS_OBJECT_NAME_INVALID); + DPRINT ("Attaching FCB to fileObject\n"); + Status = vfatAttachFCBToFileObject (DeviceExt, Fcb, FileObject); + if (!NT_SUCCESS(Status)) + { + vfatReleaseFCB (DeviceExt, Fcb); } - } + return Status; +}
- /* Try opening the file. */ - Status = VfatOpenFile (DeviceExt, FileObject, &ParentFcb); - - /* - * If the directory containing the file to open doesn't exist then - * fail immediately - */ - if (Status == STATUS_OBJECT_PATH_NOT_FOUND || - Status == STATUS_INVALID_PARAMETER || - Status == STATUS_DELETE_PENDING) - { - if (ParentFcb) - { - vfatReleaseFCB (DeviceExt, ParentFcb); - } - return(Status); - } - - /* - * If the file open failed then create the required file - */ - if (!NT_SUCCESS (Status)) - { - if (RequestedDisposition == FILE_CREATE || - RequestedDisposition == FILE_OPEN_IF || - RequestedDisposition == FILE_OVERWRITE_IF || - RequestedDisposition == FILE_SUPERSEDE) +static NTSTATUS +VfatCreateFile ( PDEVICE_OBJECT DeviceObject, PIRP Irp ) +/* + * FUNCTION: Create or open a file + */ +{ + PIO_STACK_LOCATION Stack; + PFILE_OBJECT FileObject; + NTSTATUS Status = STATUS_SUCCESS; + PDEVICE_EXTENSION DeviceExt; + ULONG RequestedDisposition, RequestedOptions; + PVFATCCB pCcb; + PVFATFCB pFcb; + PVFATFCB ParentFcb; + PWCHAR c, last; + BOOLEAN PagingFileCreate = FALSE; + LARGE_INTEGER AllocationSize; + BOOLEAN Dots; + UNICODE_STRING FileNameU; + + /* Unpack the various parameters. */ + Stack = IoGetCurrentIrpStackLocation (Irp); + RequestedDisposition = ((Stack->Parameters.Create.Options >> 24) & 0xff); + RequestedOptions = + Stack->Parameters.Create.Options & FILE_VALID_OPTION_FLAGS; + PagingFileCreate = (Stack->Flags & SL_OPEN_PAGING_FILE) ? TRUE : FALSE; + FileObject = Stack->FileObject; + DeviceExt = DeviceObject->DeviceExtension; + + /* Check their validity. */ + if (RequestedOptions & FILE_DIRECTORY_FILE && + RequestedDisposition == FILE_SUPERSEDE) { - ULONG Attributes; - Attributes = Stack->Parameters.Create.FileAttributes; - - vfatSplitPathName(&FileObject->FileName, NULL, &FileNameU); - Status = VfatAddEntry (DeviceExt, &FileNameU, &pFcb, ParentFcb, RequestedOptions, - (UCHAR)(Attributes & FILE_ATTRIBUTE_VALID_FLAGS)); - vfatReleaseFCB (DeviceExt, ParentFcb); - if (NT_SUCCESS (Status)) - { - Status = vfatAttachFCBToFileObject (DeviceExt, pFcb, FileObject); - if ( !NT_SUCCESS(Status) ) - { - vfatReleaseFCB (DeviceExt, pFcb); - return Status; - } - - Irp->IoStatus.Information = FILE_CREATED; - - VfatSetAllocationSizeInformation(FileObject, - pFcb, - DeviceExt, - &Irp->Overlay.AllocationSize); - VfatSetExtendedAttributes(FileObject, - Irp->AssociatedIrp.SystemBuffer, - Stack->Parameters.Create.EaLength); - - if (PagingFileCreate) - { - pFcb->Flags |= FCB_IS_PAGE_FILE; - } - } - else - { - return(Status); - } + return(STATUS_INVALID_PARAMETER); } - else + + /* This a open operation for the volume itself */ + if (FileObject->FileName.Length == 0 && + FileObject->RelatedFileObject == NULL) { - vfatReleaseFCB (DeviceExt, ParentFcb); - return(Status); + if (RequestedDisposition == FILE_CREATE || + RequestedDisposition == FILE_OVERWRITE_IF || + RequestedDisposition == FILE_SUPERSEDE) + { + return(STATUS_ACCESS_DENIED); + } + if (RequestedOptions & FILE_DIRECTORY_FILE) + { + return(STATUS_NOT_A_DIRECTORY); + } + pFcb = DeviceExt->VolumeFcb; + pCcb = ExAllocateFromNPagedLookasideList(&VfatGlobalData->CcbLookasideList); + if (pCcb == NULL) + { + return (STATUS_INSUFFICIENT_RESOURCES); + } + RtlZeroMemory(pCcb, sizeof(VFATCCB)); + FileObject->SectionObjectPointer = &pFcb->SectionObjectPointers; + FileObject->FsContext = pFcb; + FileObject->FsContext2 = pCcb; + pFcb->RefCount++; + + Irp->IoStatus.Information = FILE_OPENED; + return(STATUS_SUCCESS); } - } - else - { - if (ParentFcb) [truncated at 1000 lines; 423 more skipped]
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