/* 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++;
- }
- 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);
+ 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++;
+ }
+ 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
-ReadVolumeLabel (PDEVICE_EXTENSION DeviceExt, PVPB Vpb)
/*
* FUNCTION: Read the volume label
*/
+NTSTATUS
+ReadVolumeLabel(
+ PDEVICE_EXTENSION DeviceExt,
+ PVPB Vpb)
{
- 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, SizeDirEntry, 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, SizeDirEntry, 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, SizeDirEntry, 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, SizeDirEntry, 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)
/*
* FUNCTION: Find a file
*/
+NTSTATUS
+FindFile(
+ PDEVICE_EXTENSION DeviceExt,
+ PVFATFCB Parent,
+ PUNICODE_STRING FileToFindU,
+ PVFAT_DIRENTRY_CONTEXT DirContext,
+ BOOLEAN First)
{
- 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 %p, FileToFind '%wZ', DirIndex: %d)\n",
- Parent, FileToFindU, DirContext->DirIndex);
- DPRINT ("FindFile: Path %wZ\n",&Parent->PathNameU);
-
- PathNameBufferLength = LONGNAME_MAX_LENGTH * sizeof(WCHAR);
- PathNameBuffer = ExAllocatePoolWithTag(NonPagedPool, PathNameBufferLength + sizeof(WCHAR), TAG_VFAT);
- if (!PathNameBuffer)
- {
- 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
- {
- DPRINT("FCB not found for %wZ\n", &PathNameU);
- Status = STATUS_UNSUCCESSFUL;
- }
- vfatReleaseFCB(DeviceExt, rcFcb);
- ExFreePool(PathNameBuffer);
- return Status;
- }
- }
-
- /* FsRtlIsNameInExpression need the searched string to be upcase,
- * even if IgnoreCase is specified */
- Status = RtlUpcaseUnicodeString(&FileToFindUpcase, FileToFindU, TRUE);
- if (!NT_SUCCESS(Status))
- {
- 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);
- }
- 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++;
- }
-
- if (Context)
- {
- CcUnpinData(Context);
- }
-
- RtlFreeUnicodeString(&FileToFindUpcase);
- 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 %p, FileToFind '%wZ', DirIndex: %u)\n",
+ Parent, FileToFindU, DirContext->DirIndex);
+ DPRINT("FindFile: Path %wZ\n",&Parent->PathNameU);
+
+ PathNameBufferLength = LONGNAME_MAX_LENGTH * sizeof(WCHAR);
+ PathNameBuffer = ExAllocatePoolWithTag(NonPagedPool, PathNameBufferLength + sizeof(WCHAR), TAG_VFAT);
+ if (!PathNameBuffer)
+ {
+ 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 %u (%u)\n",
+ &DirContext->LongNameU, DirContext->DirIndex, DirContext->StartIndex);
+ Status = STATUS_SUCCESS;
+ }
+ else
+ {
+ DPRINT("FCB not found for %wZ\n", &PathNameU);
+ Status = STATUS_UNSUCCESSFUL;
+ }
+ vfatReleaseFCB(DeviceExt, rcFcb);
+ ExFreePool(PathNameBuffer);
+ return Status;
+ }
+ }
+
+ /* FsRtlIsNameInExpression need the searched string to be upcase,
+ * even if IgnoreCase is specified */
+ Status = RtlUpcaseUnicodeString(&FileToFindUpcase, FileToFindU, TRUE);
+ if (!NT_SUCCESS(Status))
+ {
+ 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);
+ }
+ 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("%u\n", DirContext->LongNameU.Length);
+ DPRINT("FindFile: new Name %wZ, DirIndex %u\n",
+ &DirContext->LongNameU, DirContext->DirIndex);
+
+ if (Context)
+ {
+ CcUnpinData(Context);
+ }
+ RtlFreeUnicodeString(&FileToFindUpcase);
+ ExFreePool(PathNameBuffer);
+ return STATUS_SUCCESS;
+ }
+ DirContext->DirIndex++;
+ }
+
+ if (Context)
+ {
+ CcUnpinData(Context);
+ }
+
+ RtlFreeUnicodeString(&FileToFindUpcase);
+ ExFreePool(PathNameBuffer);
+ return Status;
}
-static
-NTSTATUS
-VfatOpenFile (
- PDEVICE_EXTENSION DeviceExt,
- PUNICODE_STRING PathNameU,
- PFILE_OBJECT FileObject,
- PVFATFCB* ParentFcb )
/*
* FUNCTION: Opens a file
*/
+static
+NTSTATUS
+VfatOpenFile(
+ PDEVICE_EXTENSION DeviceExt,
+ PUNICODE_STRING PathNameU,
+ PFILE_OBJECT FileObject,
+ PVFATFCB *ParentFcb)
{
- PVFATFCB Fcb;
- NTSTATUS Status;
-
- DPRINT ("VfatOpenFile(%p, '%wZ', %p, %p)\n", DeviceExt, PathNameU, FileObject, ParentFcb);
-
- 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 (!NT_SUCCESS(Status))
- {
- DPRINT ("Status %lx\n", Status);
- *ParentFcb = NULL;
- return Status;
- }
- }
-
- if (*ParentFcb)
- {
- (*ParentFcb)->RefCount++;
- }
-
- /* 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;
+ PVFATFCB Fcb;
+ NTSTATUS Status;
+
+ DPRINT("VfatOpenFile(%p, '%wZ', %p, %p)\n", DeviceExt, PathNameU, FileObject, ParentFcb);
+
+ 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 (!NT_SUCCESS(Status))
+ {
+ DPRINT ("Status %lx\n", Status);
+ *ParentFcb = NULL;
+ return Status;
+ }
+ }
+
+ if (*ParentFcb)
+ {
+ (*ParentFcb)->RefCount++;
+ }
+
+ /* 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
*/
+static NTSTATUS
+VfatCreateFile(
+ PDEVICE_OBJECT DeviceObject,
+ PIRP Irp)
{
- PIO_STACK_LOCATION Stack;
- PFILE_OBJECT FileObject;
- NTSTATUS Status = STATUS_SUCCESS;
- PDEVICE_EXTENSION DeviceExt;
- ULONG RequestedDisposition, RequestedOptions;
- PVFATFCB pFcb = NULL;
- PVFATFCB ParentFcb = NULL;
- PWCHAR c, last;
- BOOLEAN PagingFileCreate = FALSE;
- BOOLEAN Dots;
- UNICODE_STRING FileNameU;
- UNICODE_STRING PathNameU;
-
- /* 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);
- }
-
- if (RequestedOptions & FILE_DIRECTORY_FILE &&
- RequestedOptions & FILE_NON_DIRECTORY_FILE)
+ PIO_STACK_LOCATION Stack;
+ PFILE_OBJECT FileObject;
+ NTSTATUS Status = STATUS_SUCCESS;
+ PDEVICE_EXTENSION DeviceExt;
+ ULONG RequestedDisposition, RequestedOptions;
+ PVFATFCB pFcb = NULL;
+ PVFATFCB ParentFcb = NULL;
+ PWCHAR c, last;
+ BOOLEAN PagingFileCreate = FALSE;
+ BOOLEAN Dots;
+ UNICODE_STRING FileNameU;
+ UNICODE_STRING PathNameU;
+ ULONG Attributes;
+
+ /* 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;
+ }
+
+ if (RequestedOptions & FILE_DIRECTORY_FILE &&
+ RequestedOptions & FILE_NON_DIRECTORY_FILE)
+ {
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /* This a open operation for the volume itself */
+ if (FileObject->FileName.Length == 0 &&
+ (FileObject->RelatedFileObject == NULL || FileObject->RelatedFileObject->FsContext2 != NULL))
+ {
+ if (RequestedDisposition != FILE_OPEN &&
+ RequestedDisposition != FILE_OPEN_IF)
{
- return(STATUS_INVALID_PARAMETER);
+ return STATUS_ACCESS_DENIED;
}
-
- /* This a open operation for the volume itself */
- if (FileObject->FileName.Length == 0 &&
- (FileObject->RelatedFileObject == NULL || FileObject->RelatedFileObject->FsContext2 != NULL))
- {
- if (RequestedDisposition != FILE_OPEN &&
- RequestedDisposition != FILE_OPEN_IF)
- {
- return(STATUS_ACCESS_DENIED);
- }
#if 0
/* In spite of what is shown in WDK, it seems that Windows FAT driver doesn't perform that test */
- if (RequestedOptions & FILE_DIRECTORY_FILE)
- {
- return(STATUS_NOT_A_DIRECTORY);
- }
+ if (RequestedOptions & FILE_DIRECTORY_FILE)
+ {
+ return STATUS_NOT_A_DIRECTORY;
+ }
#endif
- pFcb = DeviceExt->VolumeFcb;
- vfatAttachFCBToFileObject(DeviceExt, pFcb, FileObject);
- pFcb->RefCount++;
-
- Irp->IoStatus.Information = FILE_OPENED;
- return(STATUS_SUCCESS);
- }
-
- /*
- * Check for illegal characters and illegale dot sequences in the file name
- */
- PathNameU = FileObject->FileName;
- c = PathNameU.Buffer + PathNameU.Length / sizeof(WCHAR);
- last = c - 1;
- Dots = TRUE;
- while (c-- > PathNameU.Buffer)
- {
- if (*c == L'\\' || c == PathNameU.Buffer)
- {
- if (Dots && last > c)
- {
- return(STATUS_OBJECT_NAME_INVALID);
- }
- last = c - 1;
- Dots = TRUE;
- }
- else if (*c != L'.')
- {
- Dots = FALSE;
- }
-
- if (*c != '\\' && vfatIsLongIllegal(*c))
- {
- return(STATUS_OBJECT_NAME_INVALID);
- }
- }
- if (FileObject->RelatedFileObject && PathNameU.Length >= sizeof(WCHAR) && PathNameU.Buffer[0] == L'\\')
- {
- return(STATUS_OBJECT_NAME_INVALID);
- }
- if (PathNameU.Length > sizeof(WCHAR) && PathNameU.Buffer[PathNameU.Length/sizeof(WCHAR)-1] == L'\\')
- {
- PathNameU.Length -= sizeof(WCHAR);
- }
-
- /* Try opening the file. */
- Status = VfatOpenFile (DeviceExt, &PathNameU, 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 (!NT_SUCCESS(Status) && ParentFcb == NULL)
- {
- DPRINT1("VfatOpenFile faild for '%wZ', status %x\n", &PathNameU, Status);
+ pFcb = DeviceExt->VolumeFcb;
+ vfatAttachFCBToFileObject(DeviceExt, pFcb, FileObject);
+ pFcb->RefCount++;
+
+ Irp->IoStatus.Information = FILE_OPENED;
+ return STATUS_SUCCESS;
+ }
+
+ /* Check for illegal characters and illegale dot sequences in the file name */
+ PathNameU = FileObject->FileName;
+ c = PathNameU.Buffer + PathNameU.Length / sizeof(WCHAR);
+ last = c - 1;
+ Dots = TRUE;
+ while (c-- > PathNameU.Buffer)
+ {
+ if (*c == L'\\' || c == PathNameU.Buffer)
+ {
+ if (Dots && last > c)
+ {
+ return STATUS_OBJECT_NAME_INVALID;
+ }
+ last = c - 1;
+ Dots = TRUE;
+ }
+ else if (*c != L'.')
+ {
+ Dots = FALSE;
+ }
+
+ if (*c != '\\' && vfatIsLongIllegal(*c))
+ {
+ return STATUS_OBJECT_NAME_INVALID;
+ }
+ }
+
+ if (FileObject->RelatedFileObject && PathNameU.Length >= sizeof(WCHAR) && PathNameU.Buffer[0] == L'\\')
+ {
+ return STATUS_OBJECT_NAME_INVALID;
+ }
+
+ if (PathNameU.Length > sizeof(WCHAR) && PathNameU.Buffer[PathNameU.Length/sizeof(WCHAR)-1] == L'\\')
+ {
+ PathNameU.Length -= sizeof(WCHAR);
+ }
+
+ /* Try opening the file. */
+ Status = VfatOpenFile(DeviceExt, &PathNameU, 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 (!NT_SUCCESS(Status) && ParentFcb == NULL)
+ {
+ DPRINT1("VfatOpenFile faild for '%wZ', status %x\n", &PathNameU, Status);
+ 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)
+ {
+ Attributes = Stack->Parameters.Create.FileAttributes & ~FILE_ATTRIBUTE_NORMAL;
+ if (!(RequestedOptions & FILE_DIRECTORY_FILE))
+ Attributes |= FILE_ATTRIBUTE_ARCHIVE;
+ vfatSplitPathName(&PathNameU, 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;
+ }
+ }
+ else
+ {
+ if (ParentFcb)
+ {
+ vfatReleaseFCB(DeviceExt, ParentFcb);
+ }
+ return Status;
+ }
+ }
+ else
+ {
+ if (ParentFcb)
+ {
+ vfatReleaseFCB(DeviceExt, ParentFcb);
}
- /*
- * 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)
- {
- ULONG Attributes;
- Attributes = Stack->Parameters.Create.FileAttributes & ~FILE_ATTRIBUTE_NORMAL;
-
- vfatSplitPathName(&PathNameU, 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);
- }
- }
- else
- {
- if (ParentFcb)
- {
- vfatReleaseFCB (DeviceExt, ParentFcb);
- }
- return(Status);
- }
- }
- else
- {
- if (ParentFcb)
- {
- vfatReleaseFCB (DeviceExt, ParentFcb);
- }
- /* Otherwise fail if the caller wanted to create a new file */
- if (RequestedDisposition == FILE_CREATE)
- {
- Irp->IoStatus.Information = FILE_EXISTS;
- VfatCloseFile (DeviceExt, FileObject);
- return(STATUS_OBJECT_NAME_COLLISION);
- }
-
- pFcb = FileObject->FsContext;
-
- if (pFcb->OpenHandleCount != 0)
- {
- Status = IoCheckShareAccess(Stack->Parameters.Create.SecurityContext->DesiredAccess,
- Stack->Parameters.Create.ShareAccess,
- FileObject,
- &pFcb->FCBShareAccess,
- FALSE);
- if (!NT_SUCCESS(Status))
- {
- VfatCloseFile (DeviceExt, FileObject);
- return(Status);
- }
- }
-
- /*
- * Check the file has the requested attributes
- */
- if (RequestedOptions & FILE_NON_DIRECTORY_FILE &&
- *pFcb->Attributes & FILE_ATTRIBUTE_DIRECTORY)
- {
- VfatCloseFile (DeviceExt, FileObject);
- return(STATUS_FILE_IS_A_DIRECTORY);
- }
- if (RequestedOptions & FILE_DIRECTORY_FILE &&
- !(*pFcb->Attributes & FILE_ATTRIBUTE_DIRECTORY))
- {
- VfatCloseFile (DeviceExt, FileObject);
- return(STATUS_NOT_A_DIRECTORY);
- }
+ /* Otherwise fail if the caller wanted to create a new file */
+ if (RequestedDisposition == FILE_CREATE)
+ {
+ Irp->IoStatus.Information = FILE_EXISTS;
+ VfatCloseFile(DeviceExt, FileObject);
+ return STATUS_OBJECT_NAME_COLLISION;
+ }
+
+ pFcb = FileObject->FsContext;
+
+ if (pFcb->OpenHandleCount != 0)
+ {
+ Status = IoCheckShareAccess(Stack->Parameters.Create.SecurityContext->DesiredAccess,
+ Stack->Parameters.Create.ShareAccess,
+ FileObject,
+ &pFcb->FCBShareAccess,
+ FALSE);
+ if (!NT_SUCCESS(Status))
+ {
+ VfatCloseFile(DeviceExt, FileObject);
+ return Status;
+ }
+ }
+
+ /*
+ * Check the file has the requested attributes
+ */
+ if (RequestedOptions & FILE_NON_DIRECTORY_FILE &&
+ *pFcb->Attributes & FILE_ATTRIBUTE_DIRECTORY)
+ {
+ VfatCloseFile (DeviceExt, FileObject);
+ return STATUS_FILE_IS_A_DIRECTORY;
+ }
+ if (RequestedOptions & FILE_DIRECTORY_FILE &&
+ !(*pFcb->Attributes & FILE_ATTRIBUTE_DIRECTORY))
+ {
+ VfatCloseFile (DeviceExt, FileObject);
+ return STATUS_NOT_A_DIRECTORY;
+ }
#ifndef USE_ROS_CC_AND_FS
- if (!(*pFcb->Attributes & FILE_ATTRIBUTE_DIRECTORY))
- {
- if (Stack->Parameters.Create.SecurityContext->DesiredAccess & FILE_WRITE_DATA ||
- RequestedDisposition == FILE_OVERWRITE ||
- RequestedDisposition == FILE_OVERWRITE_IF)
- {
- if (!MmFlushImageSection(&pFcb->SectionObjectPointers, MmFlushForWrite))
- {
- DPRINT1("%wZ\n", &pFcb->PathNameU);
- DPRINT1("%d %d %d\n", Stack->Parameters.Create.SecurityContext->DesiredAccess & FILE_WRITE_DATA,
- RequestedDisposition == FILE_OVERWRITE, RequestedDisposition == FILE_OVERWRITE_IF);
- VfatCloseFile (DeviceExt, FileObject);
- return STATUS_SHARING_VIOLATION;
- }
- }
- }
+ if (!(*pFcb->Attributes & FILE_ATTRIBUTE_DIRECTORY))
+ {
+ if (Stack->Parameters.Create.SecurityContext->DesiredAccess & FILE_WRITE_DATA ||
+ RequestedDisposition == FILE_OVERWRITE ||
+ RequestedDisposition == FILE_OVERWRITE_IF)
+ {
+ if (!MmFlushImageSection(&pFcb->SectionObjectPointers, MmFlushForWrite))
+ {
+ DPRINT1("%wZ\n", &pFcb->PathNameU);
+ DPRINT1("%d %d %d\n", Stack->Parameters.Create.SecurityContext->DesiredAccess & FILE_WRITE_DATA,
+ RequestedDisposition == FILE_OVERWRITE, RequestedDisposition == FILE_OVERWRITE_IF);
+ VfatCloseFile (DeviceExt, FileObject);
+ return STATUS_SHARING_VIOLATION;
+ }
+ }
+ }
#endif
- if (PagingFileCreate)
- {
- /* FIXME:
- * Do more checking for page files. It is possible,
- * that the file was opened and closed previously
- * as a normal cached file. In this case, the cache
- * manager has referenced the fileobject and the fcb
- * is held in memory. Try to remove the fileobject
- * from cache manager and use the fcb.
- */
- if (pFcb->RefCount > 1)
- {
- if(!(pFcb->Flags & FCB_IS_PAGE_FILE))
- {
- VfatCloseFile(DeviceExt, FileObject);
- return(STATUS_INVALID_PARAMETER);
- }
- }
- else
- {
- pFcb->Flags |= FCB_IS_PAGE_FILE;
- }
- }
- else
- {
- if (pFcb->Flags & FCB_IS_PAGE_FILE)
- {
- VfatCloseFile(DeviceExt, FileObject);
- return(STATUS_INVALID_PARAMETER);
- }
- }
-
-
- if (RequestedDisposition == FILE_OVERWRITE ||
- RequestedDisposition == FILE_OVERWRITE_IF ||
- RequestedDisposition == FILE_SUPERSEDE)
- {
- ExAcquireResourceExclusiveLite(&(pFcb->MainResource), TRUE);
- Status = VfatSetAllocationSizeInformation (FileObject,
- pFcb,
- DeviceExt,
- &Irp->Overlay.AllocationSize);
- ExReleaseResourceLite(&(pFcb->MainResource));
- if (!NT_SUCCESS (Status))
- {
- VfatCloseFile (DeviceExt, FileObject);
- return(Status);
- }
- }
-
- if (RequestedDisposition == FILE_SUPERSEDE)
- {
- Irp->IoStatus.Information = FILE_SUPERSEDED;
- }
- else if (RequestedDisposition == FILE_OVERWRITE ||
- RequestedDisposition == FILE_OVERWRITE_IF)
- {
- Irp->IoStatus.Information = FILE_OVERWRITTEN;
- }
- else
- {
- Irp->IoStatus.Information = FILE_OPENED;
- }
- }
-
- if (pFcb->OpenHandleCount == 0)
- {
- IoSetShareAccess(Stack->Parameters.Create.SecurityContext->DesiredAccess,
- Stack->Parameters.Create.ShareAccess,
- FileObject,
- &pFcb->FCBShareAccess);
- }
- else
- {
- IoUpdateShareAccess(
- FileObject,
- &pFcb->FCBShareAccess
- );
-
- }
-
- pFcb->OpenHandleCount++;
-
- /* FIXME : test write access if requested */
-
- return(Status);
-}
+ if (PagingFileCreate)
+ {
+ /* FIXME:
+ * Do more checking for page files. It is possible,
+ * that the file was opened and closed previously
+ * as a normal cached file. In this case, the cache
+ * manager has referenced the fileobject and the fcb
+ * is held in memory. Try to remove the fileobject
+ * from cache manager and use the fcb.
+ */
+ if (pFcb->RefCount > 1)
+ {
+ if(!(pFcb->Flags & FCB_IS_PAGE_FILE))
+ {
+ VfatCloseFile(DeviceExt, FileObject);
+ return STATUS_INVALID_PARAMETER;
+ }
+ }
+ else
+ {
+ pFcb->Flags |= FCB_IS_PAGE_FILE;
+ }
+ }
+ else
+ {
+ if (pFcb->Flags & FCB_IS_PAGE_FILE)
+ {
+ VfatCloseFile(DeviceExt, FileObject);
+ return STATUS_INVALID_PARAMETER;
+ }
+ }
+
+ if (RequestedDisposition == FILE_OVERWRITE ||
+ RequestedDisposition == FILE_OVERWRITE_IF ||
+ RequestedDisposition == FILE_SUPERSEDE)
+ {
+ ExAcquireResourceExclusiveLite(&(pFcb->MainResource), TRUE);
+ Status = VfatSetAllocationSizeInformation(FileObject,
+ pFcb,
+ DeviceExt,
+ &Irp->Overlay.AllocationSize);
+ ExReleaseResourceLite(&(pFcb->MainResource));
+ if (!NT_SUCCESS (Status))
+ {
+ VfatCloseFile(DeviceExt, FileObject);
+ return Status;
+ }
+ }
+ if (RequestedDisposition == FILE_SUPERSEDE)
+ {
+ Irp->IoStatus.Information = FILE_SUPERSEDED;
+ }
+ else if (RequestedDisposition == FILE_OVERWRITE ||
+ RequestedDisposition == FILE_OVERWRITE_IF)
+ {
+ Irp->IoStatus.Information = FILE_OVERWRITTEN;
+ }
+ else
+ {
+ Irp->IoStatus.Information = FILE_OPENED;
+ }
+ }
+
+ if (pFcb->OpenHandleCount == 0)
+ {
+ IoSetShareAccess(Stack->Parameters.Create.SecurityContext->DesiredAccess,
+ Stack->Parameters.Create.ShareAccess,
+ FileObject,
+ &pFcb->FCBShareAccess);
+ }
+ else
+ {
+ IoUpdateShareAccess(FileObject,
+ &pFcb->FCBShareAccess);
+ }
+
+ pFcb->OpenHandleCount++;
+
+ /* FIXME : test write access if requested */
+
+ return Status;
+}
-NTSTATUS
-VfatCreate (PVFAT_IRP_CONTEXT IrpContext)
/*
* FUNCTION: Create or open a file
*/
+NTSTATUS
+VfatCreate(
+ PVFAT_IRP_CONTEXT IrpContext)
{
- NTSTATUS Status;
-
- ASSERT(IrpContext);
-
- if (IrpContext->DeviceObject == VfatGlobalData->DeviceObject)
- {
- /* DeviceObject represents FileSystem instead of logical volume */
- DPRINT ("FsdCreate called with file system\n");
- IrpContext->Irp->IoStatus.Information = FILE_OPENED;
- IrpContext->Irp->IoStatus.Status = STATUS_SUCCESS;
- IoCompleteRequest (IrpContext->Irp, IO_DISK_INCREMENT);
- VfatFreeIrpContext(IrpContext);
- return(STATUS_SUCCESS);
- }
-
- if (!(IrpContext->Flags & IRPCONTEXT_CANWAIT))
- {
- return(VfatQueueRequest (IrpContext));
- }
-
- IrpContext->Irp->IoStatus.Information = 0;
- ExAcquireResourceExclusiveLite (&IrpContext->DeviceExt->DirResource, TRUE);
- Status = VfatCreateFile (IrpContext->DeviceObject, IrpContext->Irp);
- ExReleaseResourceLite (&IrpContext->DeviceExt->DirResource);
-
- IrpContext->Irp->IoStatus.Status = Status;
- IoCompleteRequest (IrpContext->Irp,
- (CCHAR)(NT_SUCCESS(Status) ? IO_DISK_INCREMENT : IO_NO_INCREMENT));
- VfatFreeIrpContext(IrpContext);
- return(Status);
+ NTSTATUS Status;
+
+ ASSERT(IrpContext);
+
+ if (IrpContext->DeviceObject == VfatGlobalData->DeviceObject)
+ {
+ /* DeviceObject represents FileSystem instead of logical volume */
+ DPRINT ("FsdCreate called with file system\n");
+ IrpContext->Irp->IoStatus.Information = FILE_OPENED;
+ IrpContext->Irp->IoStatus.Status = STATUS_SUCCESS;
+ IoCompleteRequest(IrpContext->Irp, IO_DISK_INCREMENT);
+ VfatFreeIrpContext(IrpContext);
+ return STATUS_SUCCESS;
+ }
+
+ if (!(IrpContext->Flags & IRPCONTEXT_CANWAIT))
+ {
+ return(VfatQueueRequest(IrpContext));
+ }
+
+ IrpContext->Irp->IoStatus.Information = 0;
+ ExAcquireResourceExclusiveLite(&IrpContext->DeviceExt->DirResource, TRUE);
+ Status = VfatCreateFile(IrpContext->DeviceObject, IrpContext->Irp);
+ ExReleaseResourceLite(&IrpContext->DeviceExt->DirResource);
+
+ IrpContext->Irp->IoStatus.Status = Status;
+ IoCompleteRequest(IrpContext->Irp,
+ (CCHAR)(NT_SUCCESS(Status) ? IO_DISK_INCREMENT : IO_NO_INCREMENT));
+ VfatFreeIrpContext(IrpContext);
+ return Status;
}
/* EOF */
projects / reactos.git / blobdiff