#define NDEBUG
#include <debug.h>
-/* GLOBALS *****************************************************************/
-
-
/* FUNCTIONS ****************************************************************/
-static NTSTATUS
+static
+NTSTATUS
NtfsMakeAbsoluteFilename(PFILE_OBJECT pFileObject,
- PWSTR pRelativeFileName,
- PWSTR *pAbsoluteFilename)
+ PWSTR pRelativeFileName,
+ PWSTR *pAbsoluteFilename)
{
- PWSTR rcName;
- PNTFS_FCB Fcb;
+ PWSTR rcName;
+ PNTFS_FCB Fcb;
- DPRINT("try related for %S\n", pRelativeFileName);
- Fcb = pFileObject->FsContext;
- ASSERT(Fcb);
+ DPRINT("try related for %S\n", pRelativeFileName);
+ Fcb = pFileObject->FsContext;
+ ASSERT(Fcb);
- /* verify related object is a directory and target name
- don't start with \. */
- if (NtfsFCBIsDirectory(Fcb) == FALSE ||
- pRelativeFileName[0] == L'\\')
+ /* verify related object is a directory and target name
+ don't start with \. */
+ if (NtfsFCBIsDirectory(Fcb) == FALSE ||
+ pRelativeFileName[0] == L'\\')
{
- return(STATUS_INVALID_PARAMETER);
+ return STATUS_INVALID_PARAMETER;
}
- /* construct absolute path name */
- ASSERT(wcslen (Fcb->PathName) + 1 + wcslen (pRelativeFileName) + 1
- <= MAX_PATH);
- rcName = ExAllocatePoolWithTag(NonPagedPool, MAX_PATH * sizeof(WCHAR), TAG_NTFS);
- if (!rcName)
+ /* construct absolute path name */
+ ASSERT(wcslen (Fcb->PathName) + 1 + wcslen (pRelativeFileName) + 1 <= MAX_PATH);
+ rcName = ExAllocatePoolWithTag(NonPagedPool, MAX_PATH * sizeof(WCHAR), TAG_NTFS);
+ if (!rcName)
{
- return(STATUS_INSUFFICIENT_RESOURCES);
+ return STATUS_INSUFFICIENT_RESOURCES;
}
- wcscpy(rcName, Fcb->PathName);
- if (!NtfsFCBIsRoot(Fcb))
- wcscat (rcName, L"\\");
- wcscat (rcName, pRelativeFileName);
- *pAbsoluteFilename = rcName;
+ wcscpy(rcName, Fcb->PathName);
+ if (!NtfsFCBIsRoot(Fcb))
+ wcscat (rcName, L"\\");
+ wcscat (rcName, pRelativeFileName);
+ *pAbsoluteFilename = rcName;
- return(STATUS_SUCCESS);
+ return STATUS_SUCCESS;
}
-static NTSTATUS
-NtfsOpenFile(PDEVICE_EXTENSION DeviceExt,
- PFILE_OBJECT FileObject,
- PWSTR FileName)
/*
* FUNCTION: Opens a file
*/
+static
+NTSTATUS
+NtfsOpenFile(PDEVICE_EXTENSION DeviceExt,
+ PFILE_OBJECT FileObject,
+ PWSTR FileName,
+ PNTFS_FCB * FoundFCB)
{
- PNTFS_FCB ParentFcb;
- PNTFS_FCB Fcb;
- NTSTATUS Status;
- PWSTR AbsFileName = NULL;
+ PNTFS_FCB ParentFcb;
+ PNTFS_FCB Fcb;
+ NTSTATUS Status;
+ PWSTR AbsFileName = NULL;
- DPRINT("NtfsOpenFile(%p, %p, %S)\n", DeviceExt, FileObject, FileName);
+ DPRINT1("NtfsOpenFile(%p, %p, %S, %p)\n", DeviceExt, FileObject, FileName, FoundFCB);
- if (FileObject->RelatedFileObject)
+ *FoundFCB = NULL;
+
+ if (FileObject->RelatedFileObject)
{
- DPRINT("Converting relative filename to absolute filename\n");
-
- Status = NtfsMakeAbsoluteFilename(FileObject->RelatedFileObject,
- FileName,
- &AbsFileName);
- FileName = AbsFileName;
- if (!NT_SUCCESS(Status))
- {
- return(Status);
- }
- return(STATUS_UNSUCCESSFUL);
+ DPRINT("Converting relative filename to absolute filename\n");
+
+ Status = NtfsMakeAbsoluteFilename(FileObject->RelatedFileObject,
+ FileName,
+ &AbsFileName);
+ FileName = AbsFileName;
+ if (!NT_SUCCESS(Status))
+ {
+ return Status;
+ }
+
+ return STATUS_UNSUCCESSFUL;
}
- //FIXME: Get cannonical path name (remove .'s, ..'s and extra separators)
+ //FIXME: Get cannonical path name (remove .'s, ..'s and extra separators)
- DPRINT("PathName to open: %S\n", FileName);
+ DPRINT("PathName to open: %S\n", FileName);
- /* try first to find an existing FCB in memory */
- DPRINT("Checking for existing FCB in memory\n");
- Fcb = NtfsGrabFCBFromTable(DeviceExt,
- FileName);
- if (Fcb == NULL)
+ /* try first to find an existing FCB in memory */
+ DPRINT("Checking for existing FCB in memory\n");
+ Fcb = NtfsGrabFCBFromTable(DeviceExt,
+ FileName);
+ if (Fcb == NULL)
{
- DPRINT("No existing FCB found, making a new one if file exists.\n");
- Status = NtfsGetFCBForFile(DeviceExt,
- &ParentFcb,
- &Fcb,
- FileName);
- if (ParentFcb != NULL)
- {
- NtfsReleaseFCB(DeviceExt,
- ParentFcb);
- }
-
- if (!NT_SUCCESS (Status))
- {
- DPRINT("Could not make a new FCB, status: %x\n", Status);
-
- if (AbsFileName)
- ExFreePool(AbsFileName);
-
- return(Status);
- }
+ DPRINT("No existing FCB found, making a new one if file exists.\n");
+ Status = NtfsGetFCBForFile(DeviceExt,
+ &ParentFcb,
+ &Fcb,
+ FileName);
+ if (ParentFcb != NULL)
+ {
+ NtfsReleaseFCB(DeviceExt,
+ ParentFcb);
+ }
+
+ if (!NT_SUCCESS (Status))
+ {
+ DPRINT("Could not make a new FCB, status: %x\n", Status);
+
+ if (AbsFileName)
+ ExFreePool(AbsFileName);
+
+ return Status;
+ }
}
- DPRINT("Attaching FCB to fileObject\n");
- Status = NtfsAttachFCBToFileObject(DeviceExt,
- Fcb,
- FileObject);
+ DPRINT("Attaching FCB to fileObject\n");
+ Status = NtfsAttachFCBToFileObject(DeviceExt,
+ Fcb,
+ FileObject);
+
+ if (AbsFileName)
+ ExFreePool(AbsFileName);
- if (AbsFileName)
- ExFreePool (AbsFileName);
+ *FoundFCB = Fcb;
- return(Status);
+ return Status;
}
-static NTSTATUS
-NtfsCreateFile(PDEVICE_OBJECT DeviceObject,
- PIRP Irp)
/*
* FUNCTION: Opens a file
*/
+static
+NTSTATUS
+NtfsCreateFile(PDEVICE_OBJECT DeviceObject,
+ PIRP Irp)
{
- PDEVICE_EXTENSION DeviceExt;
- PIO_STACK_LOCATION Stack;
- PFILE_OBJECT FileObject;
- ULONG RequestedDisposition;
-// ULONG RequestedOptions;
-// PFCB Fcb;
-// PWSTR FileName;
- NTSTATUS Status;
-
- DPRINT("NtfsCreateFile() called\n");
-
- DeviceExt = DeviceObject->DeviceExtension;
- ASSERT(DeviceExt);
- Stack = IoGetCurrentIrpStackLocation (Irp);
- ASSERT(Stack);
-
- RequestedDisposition = ((Stack->Parameters.Create.Options >> 24) & 0xff);
-// RequestedOptions =
-// Stack->Parameters.Create.Options & FILE_VALID_OPTION_FLAGS;
+ PDEVICE_EXTENSION DeviceExt;
+ PIO_STACK_LOCATION Stack;
+ PFILE_OBJECT FileObject;
+ ULONG RequestedDisposition;
+ ULONG RequestedOptions;
+ PNTFS_FCB Fcb;
+// PWSTR FileName;
+ NTSTATUS Status;
+
+ DPRINT1("NtfsCreateFile(%p, %p) called\n", DeviceObject, Irp);
+
+ DeviceExt = DeviceObject->DeviceExtension;
+ ASSERT(DeviceExt);
+ Stack = IoGetCurrentIrpStackLocation (Irp);
+ ASSERT(Stack);
+
+ 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;
-// if ((RequestedOptions & FILE_DIRECTORY_FILE)
-// && RequestedDisposition == FILE_SUPERSEDE)
-// return STATUS_INVALID_PARAMETER;
+ if (RequestedOptions & FILE_DIRECTORY_FILE &&
+ RequestedDisposition == FILE_SUPERSEDE)
+ {
+ return STATUS_INVALID_PARAMETER;
+ }
- FileObject = Stack->FileObject;
+ FileObject = Stack->FileObject;
+
+ if (RequestedDisposition == FILE_CREATE ||
+ RequestedDisposition == FILE_OVERWRITE_IF ||
+ RequestedDisposition == FILE_SUPERSEDE)
+ {
+ return STATUS_ACCESS_DENIED;
+ }
- if (RequestedDisposition == FILE_CREATE ||
- RequestedDisposition == FILE_OVERWRITE_IF ||
- RequestedDisposition == FILE_SUPERSEDE)
+ /* This a open operation for the volume itself */
+ if (FileObject->FileName.Length == 0 &&
+ (FileObject->RelatedFileObject == NULL || FileObject->RelatedFileObject->FsContext2 != NULL))
{
- return(STATUS_ACCESS_DENIED);
+ if (RequestedDisposition != FILE_OPEN &&
+ RequestedDisposition != FILE_OPEN_IF)
+ {
+ return STATUS_ACCESS_DENIED;
+ }
+
+ if (RequestedOptions & FILE_DIRECTORY_FILE)
+ {
+ return STATUS_NOT_A_DIRECTORY;
+ }
+
+ NtfsAttachFCBToFileObject(DeviceExt, DeviceExt->VolumeFcb, FileObject);
+ DeviceExt->VolumeFcb->RefCount++;
+
+ Irp->IoStatus.Information = FILE_OPENED;
+ return STATUS_SUCCESS;
}
- Status = NtfsOpenFile(DeviceExt,
- FileObject,
- FileObject->FileName.Buffer);
+ Status = NtfsOpenFile(DeviceExt,
+ FileObject,
+ FileObject->FileName.Buffer,
+ &Fcb);
- /*
- * If the directory containing the file to open doesn't exist then
- * fail immediately
- */
- Irp->IoStatus.Information = (NT_SUCCESS(Status)) ? FILE_OPENED : 0;
- Irp->IoStatus.Status = Status;
+ /*
+ * If the directory containing the file to open doesn't exist then
+ * fail immediately
+ */
+ Irp->IoStatus.Information = (NT_SUCCESS(Status)) ? FILE_OPENED : 0;
+ Irp->IoStatus.Status = Status;
- return(Status);
+ return Status;
}
-NTSTATUS NTAPI
+NTSTATUS
+NTAPI
NtfsFsdCreate(PDEVICE_OBJECT DeviceObject,
- PIRP Irp)
+ PIRP Irp)
{
- PDEVICE_EXTENSION DeviceExt;
- NTSTATUS Status;
+ PDEVICE_EXTENSION DeviceExt;
+ NTSTATUS Status;
- if (DeviceObject == NtfsGlobalData->DeviceObject)
+ if (DeviceObject == NtfsGlobalData->DeviceObject)
{
- /* DeviceObject represents FileSystem instead of logical volume */
- DPRINT("Opening file system\n");
- Irp->IoStatus.Information = FILE_OPENED;
- Status = STATUS_SUCCESS;
- goto ByeBye;
+ /* DeviceObject represents FileSystem instead of logical volume */
+ DPRINT("Opening file system\n");
+ Irp->IoStatus.Information = FILE_OPENED;
+ Status = STATUS_SUCCESS;
+ goto ByeBye;
}
- DeviceExt = DeviceObject->DeviceExtension;
+ DeviceExt = DeviceObject->DeviceExtension;
- FsRtlEnterFileSystem();
- ExAcquireResourceExclusiveLite(&DeviceExt->DirResource,
- TRUE);
- Status = NtfsCreateFile(DeviceObject,
- Irp);
- ExReleaseResourceLite(&DeviceExt->DirResource);
- FsRtlExitFileSystem();
+ FsRtlEnterFileSystem();
+ ExAcquireResourceExclusiveLite(&DeviceExt->DirResource,
+ TRUE);
+ Status = NtfsCreateFile(DeviceObject,
+ Irp);
+ ExReleaseResourceLite(&DeviceExt->DirResource);
+ FsRtlExitFileSystem();
ByeBye:
- Irp->IoStatus.Status = Status;
- IoCompleteRequest(Irp,
- NT_SUCCESS(Status) ? IO_DISK_INCREMENT : IO_NO_INCREMENT);
+ Irp->IoStatus.Status = Status;
+ IoCompleteRequest(Irp,
+ NT_SUCCESS(Status) ? IO_DISK_INCREMENT : IO_NO_INCREMENT);
- return(Status);
+ return Status;
}
/* EOF */
projects / reactos.git / blobdiff