Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers...

[reactos.git] / drivers / filesystems / npfs / volinfo.c

diff --git a/drivers/filesystems/npfs/volinfo.c b/drivers/filesystems/npfs/volinfo.c
new file mode 100644 (file)
index 0000000..4e3cf9f
--- /dev/null
+++ b/drivers/filesystems/npfs/volinfo.c
@@ -0,0 +1,210 @@
+/*
+ * PROJECT:     ReactOS Named Pipe FileSystem
+ * LICENSE:     BSD - See COPYING.ARM in the top level directory
+ * FILE:        drivers/filesystems/npfs/volinfo.c
+ * PURPOSE:     Named Pipe FileSystem Volume Information
+ * PROGRAMMERS: ReactOS Portable Systems Group
+ */
+
+/* INCLUDES *******************************************************************/
+
+#include "npfs.h"
+
+// File ID number for NPFS bugchecking support
+#define NPFS_BUGCHECK_FILE_ID   (NPFS_BUGCHECK_VOLINFO)
+
+/* FUNCTIONS ******************************************************************/
+
+NTSTATUS
+NTAPI
+NpQueryFsVolumeInfo(IN PVOID Buffer,
+                    IN OUT PULONG Length)
+{
+    PFILE_FS_VOLUME_INFORMATION InfoBuffer = Buffer;
+    NTSTATUS Status;
+    USHORT NameLength;
+    TRACE("Entered\n");
+
+    *Length -= FIELD_OFFSET(FILE_FS_VOLUME_INFORMATION, VolumeLabel);
+
+    InfoBuffer->VolumeCreationTime.QuadPart = 0;
+    InfoBuffer->VolumeSerialNumber = 0;
+    InfoBuffer->SupportsObjects = 0;
+
+    NameLength = 18;
+    InfoBuffer->VolumeLabelLength = 18;
+
+    if (*Length < 18)
+    {
+        NameLength = (USHORT)*Length;
+        Status = STATUS_BUFFER_OVERFLOW;
+    }
+    else
+    {
+        Status = STATUS_SUCCESS;
+    }
+
+    RtlCopyMemory(InfoBuffer->VolumeLabel, L"NamedPipe", NameLength);
+    *Length -= NameLength;
+
+    TRACE("Leaving, Status = %lx\n", Status);
+    return Status;
+}
+
+NTSTATUS
+NTAPI
+NpQueryFsSizeInfo(IN PVOID Buffer,
+                  IN OUT PULONG Length)
+{
+    PFILE_FS_SIZE_INFORMATION InfoBuffer = Buffer;
+    TRACE("Entered\n");
+
+    *Length -= sizeof(*InfoBuffer);
+
+    InfoBuffer->TotalAllocationUnits.QuadPart = 0;
+    InfoBuffer->AvailableAllocationUnits.QuadPart = 0;
+    InfoBuffer->SectorsPerAllocationUnit = 1;
+    InfoBuffer->BytesPerSector = 1;
+
+    TRACE("Leaving, Status = STATUS_SUCCESS\n");
+    return STATUS_SUCCESS;
+}
+
+NTSTATUS
+NTAPI
+NpQueryFsDeviceInfo(IN PVOID Buffer,
+                    IN OUT PULONG Length)
+{
+    PFILE_FS_DEVICE_INFORMATION InfoBuffer = Buffer;
+    TRACE("Entered\n");
+
+    InfoBuffer->DeviceType = 0;
+    InfoBuffer->Characteristics = 0;
+    InfoBuffer->DeviceType = FILE_DEVICE_NAMED_PIPE;
+    *Length -= sizeof(*InfoBuffer);
+
+    TRACE("Leaving, Status = STATUS_SUCCESS\n");
+    return STATUS_SUCCESS;
+}
+
+NTSTATUS
+NTAPI
+NpQueryFsAttributeInfo(IN PVOID Buffer,
+                       IN OUT PULONG Length)
+{
+    PFILE_FS_ATTRIBUTE_INFORMATION InfoBuffer = Buffer;
+    NTSTATUS Status;
+    USHORT NameLength;
+    TRACE("Entered\n");
+
+    NameLength = (USHORT)(*Length - 12);
+    if (NameLength < 8)
+    {
+        *Length = 0;
+        Status = STATUS_BUFFER_OVERFLOW;
+    }
+    else
+    {
+        *Length -= 20;
+        NameLength = 8;
+        Status = STATUS_SUCCESS;
+    }
+
+    InfoBuffer->MaximumComponentNameLength = 0xFFFFFFFF;
+    InfoBuffer->FileSystemNameLength = 8;
+    InfoBuffer->FileSystemAttributes = FILE_CASE_PRESERVED_NAMES;
+    RtlCopyMemory(InfoBuffer->FileSystemName, L"NPFS", NameLength);
+
+    TRACE("Leaving, Status = %lx\n", Status);
+    return Status;
+}
+
+NTSTATUS
+NTAPI
+NpQueryFsFullSizeInfo(IN PVOID Buffer,
+                      IN OUT PULONG Length)
+{
+    PFILE_FS_FULL_SIZE_INFORMATION InfoBuffer = Buffer;
+    TRACE("Entered\n");
+
+    *Length -= sizeof(*InfoBuffer);
+
+    RtlZeroMemory(InfoBuffer, sizeof(*InfoBuffer));
+
+    TRACE("Leaving, Status = STATUS_SUCCESS\n");
+    return STATUS_SUCCESS;
+}
+
+NTSTATUS
+NTAPI
+NpCommonQueryVolumeInformation(IN PDEVICE_OBJECT DeviceObject,
+                               IN PIRP Irp)
+{
+    PIO_STACK_LOCATION IoStack;
+    FS_INFORMATION_CLASS InfoClass;
+    ULONG Length;
+    PVOID Buffer;
+    NTSTATUS Status;
+    PAGED_CODE();
+    TRACE("Entered\n");
+
+    IoStack = IoGetCurrentIrpStackLocation(Irp);
+    Buffer = Irp->AssociatedIrp.SystemBuffer;
+    Length = IoStack->Parameters.QueryVolume.Length;
+    InfoClass = IoStack->Parameters.QueryVolume.FsInformationClass;
+
+    switch (InfoClass)
+    {
+        case FileFsVolumeInformation:
+            Status = NpQueryFsVolumeInfo(Buffer, &Length);
+            break;
+        case FileFsSizeInformation:
+            Status = NpQueryFsSizeInfo(Buffer, &Length);
+            break;
+        case FileFsDeviceInformation:
+            Status = NpQueryFsDeviceInfo(Buffer, &Length);
+            break;
+        case FileFsAttributeInformation:
+            Status = NpQueryFsAttributeInfo(Buffer, &Length);
+            break;
+        case FileFsFullSizeInformation:
+            Status = NpQueryFsFullSizeInfo(Buffer, &Length);
+            break;
+        default:
+            Status = STATUS_NOT_SUPPORTED;
+            break;
+    }
+
+    Irp->IoStatus.Information = IoStack->Parameters.QueryVolume.Length - Length;
+    TRACE("Leaving, Status = %lx\n", Status);
+    return Status;
+}
+
+NTSTATUS
+NTAPI
+NpFsdQueryVolumeInformation(IN PDEVICE_OBJECT DeviceObject,
+                            IN PIRP Irp)
+{
+    NTSTATUS Status;
+    PAGED_CODE();
+    TRACE("Entered\n");
+
+    FsRtlEnterFileSystem();
+    NpAcquireSharedVcb();
+
+    Status = NpCommonQueryVolumeInformation(DeviceObject, Irp);
+
+    NpReleaseVcb();
+    FsRtlExitFileSystem();
+
+    if (Status != STATUS_PENDING)
+    {
+        Irp->IoStatus.Status = Status;
+        IoCompleteRequest(Irp, IO_NAMED_PIPE_INCREMENT);
+    }
+
+    TRACE("Leaving, Status = %lx\n", Status);
+    return Status;
+}
+
+/* EOF */