[ros-diffs] [fireball] 43199: [fastfat_new] - Start implementing one of the most massive IFS driver routines - IRP_MJ_CREATE handler. Right now it just does some preliminary work, deciphers all options, prepares all variables, prints out debug stuff.
fireball at svn.reactos.org
fireball at svn.reactos.org
Mon Sep 28 11:49:16 CEST 2009
Author: fireball
Date: Mon Sep 28 11:49:16 2009
New Revision: 43199
URL: http://svn.reactos.org/svn/reactos?rev=43199&view=rev
Log:
[fastfat_new]
- Start implementing one of the most massive IFS driver routines - IRP_MJ_CREATE handler. Right now it just does some preliminary work, deciphers all options, prepares all variables, prints out debug stuff.
Modified:
trunk/reactos/drivers/filesystems/fastfat_new/create.c
Modified: trunk/reactos/drivers/filesystems/fastfat_new/create.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfat_new/create.c?rev=43199&r1=43198&r2=43199&view=diff
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/create.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/create.c [iso-8859-1] Mon Sep 28 11:49:16 2009
@@ -15,10 +15,177 @@
NTSTATUS
NTAPI
+FatiCreate(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PIRP Irp)
+{
+ /* Boolean options */
+ BOOLEAN CreateDirectory;
+ BOOLEAN SequentialOnly;
+ BOOLEAN NoIntermediateBuffering;
+ BOOLEAN OpenDirectory;
+ BOOLEAN IsPagingFile;
+ BOOLEAN OpenTargetDirectory;
+ BOOLEAN DirectoryFile;
+ BOOLEAN NonDirectoryFile;
+ BOOLEAN NoEaKnowledge;
+ BOOLEAN DeleteOnClose;
+ BOOLEAN TemporaryFile;
+ ULONG CreateDisposition;
+
+ /* Control blocks */
+ PVCB Vcb;
+
+ /* IRP data */
+ PFILE_OBJECT FileObject;
+ PFILE_OBJECT RelatedFO;
+ UNICODE_STRING FileName;
+ ULONG AllocationSize;
+ PFILE_FULL_EA_INFORMATION EaBuffer;
+ PACCESS_MASK DesiredAccess;
+ ULONG Options;
+ UCHAR FileAttributes;
+ USHORT ShareAccess;
+ ULONG EaLength;
+
+ /* Misc */
+ //NTSTATUS Status;
+ IO_STATUS_BLOCK Iosb;
+ PIO_STACK_LOCATION IrpSp;
+
+ /* Get current IRP stack location */
+ IrpSp = IoGetCurrentIrpStackLocation(Irp);
+
+ DPRINT1("FatCommonCreate\n", 0 );
+ DPRINT1("Irp = %08lx\n", Irp );
+ DPRINT1("\t->Flags = %08lx\n", Irp->Flags );
+ DPRINT1("\t->FileObject = %08lx\n", IrpSp->FileObject );
+ DPRINT1("\t->RelatedFileObject = %08lx\n", IrpSp->FileObject->RelatedFileObject );
+ DPRINT1("\t->FileName = %wZ\n", &IrpSp->FileObject->FileName );
+ DPRINT1("\t->AllocationSize.LowPart = %08lx\n", Irp->Overlay.AllocationSize.LowPart );
+ DPRINT1("\t->AllocationSize.HighPart = %08lx\n", Irp->Overlay.AllocationSize.HighPart );
+ DPRINT1("\t->SystemBuffer = %08lx\n", Irp->AssociatedIrp.SystemBuffer );
+ DPRINT1("\t->DesiredAccess = %08lx\n", IrpSp->Parameters.Create.SecurityContext->DesiredAccess );
+ DPRINT1("\t->Options = %08lx\n", IrpSp->Parameters.Create.Options );
+ DPRINT1("\t->FileAttributes = %04x\n", IrpSp->Parameters.Create.FileAttributes );
+ DPRINT1("\t->ShareAccess = %04x\n", IrpSp->Parameters.Create.ShareAccess );
+ DPRINT1("\t->EaLength = %08lx\n", IrpSp->Parameters.Create.EaLength );
+
+ /* Apply a special hack for Win32, idea taken from FASTFAT reference driver from WDK */
+ if ((IrpSp->FileObject->FileName.Length > sizeof(WCHAR)) &&
+ (IrpSp->FileObject->FileName.Buffer[1] == L'\\') &&
+ (IrpSp->FileObject->FileName.Buffer[0] == L'\\'))
+ {
+ /* Remove two leading slashes */
+ IrpSp->FileObject->FileName.Length -= sizeof(WCHAR);
+
+ RtlMoveMemory(&IrpSp->FileObject->FileName.Buffer[0],
+ &IrpSp->FileObject->FileName.Buffer[1],
+ IrpSp->FileObject->FileName.Length );
+
+ /* If there are two leading slashes again, exit */
+ if ((IrpSp->FileObject->FileName.Length > sizeof(WCHAR)) &&
+ (IrpSp->FileObject->FileName.Buffer[1] == L'\\') &&
+ (IrpSp->FileObject->FileName.Buffer[0] == L'\\'))
+ {
+ FatCompleteRequest( IrpContext, Irp, STATUS_OBJECT_NAME_INVALID );
+
+ DPRINT1("FatiCreate: STATUS_OBJECT_NAME_INVALID\n");
+ return STATUS_OBJECT_NAME_INVALID;
+ }
+ }
+
+ /* Make sure we have SecurityContext */
+ ASSERT(IrpSp->Parameters.Create.SecurityContext != NULL);
+
+ /* Get necessary data out of IRP */
+ FileObject = IrpSp->FileObject;
+ FileName = FileObject->FileName;
+ RelatedFO = FileObject->RelatedFileObject;
+ AllocationSize = Irp->Overlay.AllocationSize.LowPart;
+ EaBuffer = Irp->AssociatedIrp.SystemBuffer;
+ DesiredAccess = &IrpSp->Parameters.Create.SecurityContext->DesiredAccess;
+ Options = IrpSp->Parameters.Create.Options;
+ FileAttributes = (UCHAR)(IrpSp->Parameters.Create.FileAttributes & ~FILE_ATTRIBUTE_NORMAL);
+ ShareAccess = IrpSp->Parameters.Create.ShareAccess;
+ EaLength = IrpSp->Parameters.Create.EaLength;
+
+ /* Set VPB to related object's VPB if it exists */
+ if (RelatedFO)
+ FileObject->Vpb = RelatedFO->Vpb;
+
+ /* Prepare file attributes mask */
+ FileAttributes &= (FILE_ATTRIBUTE_READONLY |
+ FILE_ATTRIBUTE_HIDDEN |
+ FILE_ATTRIBUTE_SYSTEM |
+ FILE_ATTRIBUTE_ARCHIVE);
+
+ /* Get the volume control object */
+ Vcb = &((PVOLUME_DEVICE_OBJECT)IrpSp->DeviceObject)->Vcb;
+
+ /* Get options */
+ DirectoryFile = BooleanFlagOn(Options, FILE_DIRECTORY_FILE);
+ NonDirectoryFile = BooleanFlagOn(Options, FILE_NON_DIRECTORY_FILE);
+ SequentialOnly = BooleanFlagOn(Options, FILE_SEQUENTIAL_ONLY);
+ NoIntermediateBuffering = BooleanFlagOn(Options, FILE_NO_INTERMEDIATE_BUFFERING);
+ NoEaKnowledge = BooleanFlagOn(Options, FILE_NO_EA_KNOWLEDGE);
+ DeleteOnClose = BooleanFlagOn(Options, FILE_DELETE_ON_CLOSE);
+ TemporaryFile = BooleanFlagOn(IrpSp->Parameters.Create.FileAttributes,
+ FILE_ATTRIBUTE_TEMPORARY );
+ IsPagingFile = BooleanFlagOn(IrpSp->Flags, SL_OPEN_PAGING_FILE);
+ OpenTargetDirectory = BooleanFlagOn(IrpSp->Flags, SL_OPEN_TARGET_DIRECTORY);
+
+ /* Calculate create disposition */
+ CreateDisposition = (Options >> 24) & 0x000000ff;
+
+ /* Get Create/Open directory flags based on it */
+ CreateDirectory = (BOOLEAN)(DirectoryFile &&
+ ((CreateDisposition == FILE_CREATE) ||
+ (CreateDisposition == FILE_OPEN_IF)));
+
+ OpenDirectory = (BOOLEAN)(DirectoryFile &&
+ ((CreateDisposition == FILE_OPEN) ||
+ (CreateDisposition == FILE_OPEN_IF)));
+
+ //return Iosb.Status;
+ return STATUS_SUCCESS;
+}
+
+NTSTATUS
+NTAPI
FatCreate(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
+ PFAT_IRP_CONTEXT IrpContext;
+ NTSTATUS Status;
+ //PVOLUME_DEVICE_OBJECT VolumeDO = (PVOLUME_DEVICE_OBJECT)DeviceObject;
+
DPRINT1("FatCreate()\n");
- return STATUS_NOT_IMPLEMENTED;
+
+ /* If it's called with our Disk FS device object - it's always open */
+ // TODO: Add check for CDROM FS device object
+ if (DeviceObject == FatGlobalData.DiskDeviceObject)
+ {
+ /* Complete the request and return success */
+ Irp->IoStatus.Status = STATUS_SUCCESS;
+ Irp->IoStatus.Information = FILE_OPENED;
+
+ IoCompleteRequest(Irp, IO_DISK_INCREMENT);
+
+ return STATUS_SUCCESS;
+ }
+
+ /* Enter FsRtl critical region */
+ FsRtlEnterFileSystem();
+
+ /* Build an irp context */
+ IrpContext = FatBuildIrpContext(Irp, TRUE);
+
+ /* Call internal function */
+ Status = FatiCreate(IrpContext, Irp);
+
+ /* Leave FsRtl critical region */
+ FsRtlExitFileSystem();
+
+ return Status;
}
/* EOF */
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