/*
- * ReactOS kernel
- * Copyright (C) 2002, 2003, 2004 ReactOS Team
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
+* ReactOS kernel
+* Copyright (C) 2002, 2003, 2004 ReactOS Team
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation; either version 2 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License along
+* with this program; if not, write to the Free Software Foundation, Inc.,
+* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
/* $Id$
- *
- * COPYRIGHT: See COPYING in the top level directory
- * PROJECT: ReactOS kernel
- * FILE: services/fs/cdfs/cdfs.c
- * PURPOSE: CDROM (ISO 9660) filesystem driver
- * PROGRAMMER: Art Yerkes
- * Eric Kohl
- */
+*
+* COPYRIGHT: See COPYING in the top level directory
+* PROJECT: ReactOS kernel
+* FILE: services/fs/cdfs/cdfs.c
+* PURPOSE: CDROM (ISO 9660) filesystem driver
+* PROGRAMMER: Art Yerkes
+* Eric Kohl
+*/
/* INCLUDES *****************************************************************/
static NTSTATUS
CdfsMakeAbsoluteFilename(PFILE_OBJECT FileObject,
- PUNICODE_STRING RelativeFileName,
- PUNICODE_STRING AbsoluteFileName)
+ PUNICODE_STRING RelativeFileName,
+ PUNICODE_STRING AbsoluteFileName)
{
- ULONG Length;
- PFCB Fcb;
- NTSTATUS Status;
-
- DPRINT("try related for %wZ\n", RelativeFileName);
- Fcb = FileObject->FsContext;
- ASSERT(Fcb);
-
- /* verify related object is a directory and target name
- don't start with \. */
- if ((Fcb->Entry.FileFlags & FILE_FLAG_DIRECTORY) == 0 ||
- RelativeFileName->Buffer[0] == L'\\')
+ USHORT Length;
+ PFCB Fcb;
+ NTSTATUS Status;
+
+ DPRINT("try related for %wZ\n", RelativeFileName);
+ Fcb = FileObject->FsContext;
+ ASSERT(Fcb);
+
+ /* verify related object is a directory and target name
+ don't start with \. */
+ if ((Fcb->Entry.FileFlags & FILE_FLAG_DIRECTORY) == 0 ||
+ RelativeFileName->Buffer[0] == L'\\')
{
- return STATUS_INVALID_PARAMETER;
+ return STATUS_INVALID_PARAMETER;
}
- /* construct absolute path name */
- Length = (wcslen(Fcb->PathName) * sizeof(WCHAR)) +
- sizeof(WCHAR) +
- RelativeFileName->Length +
- sizeof(WCHAR);
- AbsoluteFileName->Length = 0;
- AbsoluteFileName->MaximumLength = Length;
- AbsoluteFileName->Buffer = ExAllocatePool(NonPagedPool,
- Length);
- if (AbsoluteFileName->Buffer == NULL)
+ /* construct absolute path name */
+ Length = (wcslen(Fcb->PathName) * sizeof(WCHAR)) +
+ sizeof(WCHAR) +
+ RelativeFileName->Length +
+ sizeof(WCHAR);
+ AbsoluteFileName->Length = 0;
+ AbsoluteFileName->MaximumLength = Length;
+ AbsoluteFileName->Buffer = ExAllocatePool(NonPagedPool,
+ Length);
+ if (AbsoluteFileName->Buffer == NULL)
{
- return STATUS_INSUFFICIENT_RESOURCES;
+ return STATUS_INSUFFICIENT_RESOURCES;
}
- Status = RtlAppendUnicodeToString(AbsoluteFileName,
- Fcb->PathName);
- if (!NT_SUCCESS(Status))
+ Status = RtlAppendUnicodeToString(AbsoluteFileName,
+ Fcb->PathName);
+ if (!NT_SUCCESS(Status))
{
- RtlFreeUnicodeString(AbsoluteFileName);
- return Status;
+ RtlFreeUnicodeString(AbsoluteFileName);
+ return Status;
}
- if (!CdfsFCBIsRoot(Fcb))
+ if (!CdfsFCBIsRoot(Fcb))
{
- Status = RtlAppendUnicodeToString(AbsoluteFileName,
- L"\\");
- if (!NT_SUCCESS(Status))
- {
- RtlFreeUnicodeString(AbsoluteFileName);
- return Status;
- }
+ Status = RtlAppendUnicodeToString(AbsoluteFileName,
+ L"\\");
+ if (!NT_SUCCESS(Status))
+ {
+ RtlFreeUnicodeString(AbsoluteFileName);
+ return Status;
+ }
}
- Status = RtlAppendUnicodeStringToString(AbsoluteFileName,
- RelativeFileName);
- if (!NT_SUCCESS(Status))
+ Status = RtlAppendUnicodeStringToString(AbsoluteFileName,
+ RelativeFileName);
+ if (!NT_SUCCESS(Status))
{
- RtlFreeUnicodeString(AbsoluteFileName);
- return Status;
+ RtlFreeUnicodeString(AbsoluteFileName);
+ return Status;
}
- return STATUS_SUCCESS;
+ return STATUS_SUCCESS;
}
/*
- * FUNCTION: Opens a file
- */
+* FUNCTION: Opens a file
+*/
static NTSTATUS
CdfsOpenFile(PDEVICE_EXTENSION DeviceExt,
- PFILE_OBJECT FileObject,
- PUNICODE_STRING FileName)
+ PFILE_OBJECT FileObject,
+ PUNICODE_STRING FileName)
{
- PFCB ParentFcb;
- PFCB Fcb;
- NTSTATUS Status;
- UNICODE_STRING AbsFileName;
+ PFCB ParentFcb;
+ PFCB Fcb;
+ NTSTATUS Status;
+ UNICODE_STRING AbsFileName;
- DPRINT("CdfsOpenFile(%08lx, %08lx, %wZ)\n", DeviceExt, FileObject, FileName);
+ DPRINT("CdfsOpenFile(%08lx, %08lx, %wZ)\n", DeviceExt, FileObject, FileName);
- if (FileObject->RelatedFileObject)
+ if (FileObject->RelatedFileObject)
{
- DPRINT("Converting relative filename to absolute filename\n");
+ DPRINT("Converting relative filename to absolute filename\n");
- Status = CdfsMakeAbsoluteFilename(FileObject->RelatedFileObject,
- FileName,
- &AbsFileName);
- if (!NT_SUCCESS(Status))
- {
- return Status;
- }
+ Status = CdfsMakeAbsoluteFilename(FileObject->RelatedFileObject,
+ FileName,
+ &AbsFileName);
+ if (!NT_SUCCESS(Status))
+ {
+ return Status;
+ }
- FileName = &AbsFileName;
+ FileName = &AbsFileName;
}
- Status = CdfsDeviceIoControl (DeviceExt->StorageDevice,
- IOCTL_CDROM_CHECK_VERIFY,
- NULL,
- 0,
- NULL,
- 0,
- FALSE);
- DPRINT ("Status %lx\n", Status);
- if (!NT_SUCCESS(Status))
+ Status = CdfsDeviceIoControl (DeviceExt->StorageDevice,
+ IOCTL_CDROM_CHECK_VERIFY,
+ NULL,
+ 0,
+ NULL,
+ 0,
+ FALSE);
+ DPRINT ("Status %lx\n", Status);
+ if (!NT_SUCCESS(Status))
{
- if (Status == STATUS_NO_MEDIA_IN_DEVICE || Status == STATUS_VERIFY_REQUIRED)
- {
- DeviceExt->VolumeDevice->Flags |= DO_VERIFY_VOLUME;
- }
- DPRINT1 ("Status %lx\n", Status);
- return Status;
+ if (Status == STATUS_NO_MEDIA_IN_DEVICE || Status == STATUS_VERIFY_REQUIRED)
+ {
+ DeviceExt->VolumeDevice->Flags |= DO_VERIFY_VOLUME;
+ }
+ DPRINT1 ("Status %lx\n", Status);
+ return Status;
}
- DPRINT("PathName to open: %wZ\n", FileName);
+ DPRINT("PathName to open: %wZ\n", FileName);
- /* try first to find an existing FCB in memory */
- DPRINT("Checking for existing FCB in memory\n");
- Fcb = CdfsGrabFCBFromTable(DeviceExt,
- FileName);
- if (Fcb == NULL)
+ /* try first to find an existing FCB in memory */
+ DPRINT("Checking for existing FCB in memory\n");
+ Fcb = CdfsGrabFCBFromTable(DeviceExt,
+ FileName);
+ if (Fcb == NULL)
{
- DPRINT("No existing FCB found, making a new one if file exists.\n");
- Status = CdfsGetFCBForFile(DeviceExt,
- &ParentFcb,
- &Fcb,
- FileName);
- if (ParentFcb != NULL)
- {
- CdfsReleaseFCB(DeviceExt,
- ParentFcb);
- }
-
- if (!NT_SUCCESS (Status))
- {
- DPRINT("Could not make a new FCB, status: %x\n", Status);
-
- if (FileName == &AbsFileName)
- RtlFreeUnicodeString(&AbsFileName);
-
- return Status;
- }
+ DPRINT("No existing FCB found, making a new one if file exists.\n");
+ Status = CdfsGetFCBForFile(DeviceExt,
+ &ParentFcb,
+ &Fcb,
+ FileName);
+ if (ParentFcb != NULL)
+ {
+ CdfsReleaseFCB(DeviceExt,
+ ParentFcb);
+ }
+
+ if (!NT_SUCCESS (Status))
+ {
+ DPRINT("Could not make a new FCB, status: %x\n", Status);
+
+ if (FileName == &AbsFileName)
+ RtlFreeUnicodeString(&AbsFileName);
+
+ return Status;
+ }
}
- DPRINT("Attaching FCB to fileObject\n");
- Status = CdfsAttachFCBToFileObject(DeviceExt,
- Fcb,
- FileObject);
+ DPRINT("Attaching FCB to fileObject\n");
+ Status = CdfsAttachFCBToFileObject(DeviceExt,
+ Fcb,
+ FileObject);
- if ((FileName == &AbsFileName) && AbsFileName.Buffer)
- ExFreePool(AbsFileName.Buffer);
+ if ((FileName == &AbsFileName) && AbsFileName.Buffer)
+ ExFreePool(AbsFileName.Buffer);
- return Status;
+ return Status;
}
/*
- * FUNCTION: Opens a file
- */
+* FUNCTION: Opens a file
+*/
static NTSTATUS
CdfsCreateFile(PDEVICE_OBJECT DeviceObject,
- PIRP Irp)
+ PIRP Irp)
{
- PDEVICE_EXTENSION DeviceExt;
- PIO_STACK_LOCATION Stack;
- PFILE_OBJECT FileObject;
- ULONG RequestedDisposition;
- ULONG RequestedOptions;
- PFCB Fcb;
- NTSTATUS Status;
-
- DPRINT("CdfsCreateFile() 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;
- DPRINT("RequestedDisposition %x, RequestedOptions %x\n",
- RequestedDisposition, RequestedOptions);
-
- FileObject = Stack->FileObject;
-
- if (RequestedDisposition == FILE_CREATE ||
- RequestedDisposition == FILE_OVERWRITE_IF ||
- RequestedDisposition == FILE_SUPERSEDE)
+ PDEVICE_EXTENSION DeviceExt;
+ PIO_STACK_LOCATION Stack;
+ PFILE_OBJECT FileObject;
+ ULONG RequestedDisposition;
+ ULONG RequestedOptions;
+ PFCB Fcb;
+ NTSTATUS Status;
+
+ DPRINT("CdfsCreateFile() 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;
+ DPRINT("RequestedDisposition %x, RequestedOptions %x\n",
+ RequestedDisposition, RequestedOptions);
+
+ FileObject = Stack->FileObject;
+
+ if (RequestedDisposition == FILE_CREATE ||
+ RequestedDisposition == FILE_OVERWRITE_IF ||
+ RequestedDisposition == FILE_SUPERSEDE)
{
- return STATUS_ACCESS_DENIED;
+ return STATUS_ACCESS_DENIED;
}
- Status = CdfsOpenFile(DeviceExt,
- FileObject,
- &FileObject->FileName);
- if (NT_SUCCESS(Status))
+ Status = CdfsOpenFile(DeviceExt,
+ FileObject,
+ &FileObject->FileName);
+ if (NT_SUCCESS(Status))
{
- Fcb = FileObject->FsContext;
-
- /* Check whether the file has the requested attributes */
- if (RequestedOptions & FILE_NON_DIRECTORY_FILE && CdfsFCBIsDirectory(Fcb))
- {
- CdfsCloseFile (DeviceExt, FileObject);
- return STATUS_FILE_IS_A_DIRECTORY;
- }
-
- if (RequestedOptions & FILE_DIRECTORY_FILE && !CdfsFCBIsDirectory(Fcb))
- {
- CdfsCloseFile (DeviceExt, FileObject);
- return STATUS_NOT_A_DIRECTORY;
- }
- }
-
- /*
- * 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;
+ Fcb = FileObject->FsContext;
+
+ /* Check whether the file has the requested attributes */
+ if (RequestedOptions & FILE_NON_DIRECTORY_FILE && CdfsFCBIsDirectory(Fcb))
+ {
+ CdfsCloseFile (DeviceExt, FileObject);
+ return STATUS_FILE_IS_A_DIRECTORY;
+ }
+
+ if (RequestedOptions & FILE_DIRECTORY_FILE && !CdfsFCBIsDirectory(Fcb))
+ {
+ CdfsCloseFile (DeviceExt, FileObject);
+ return STATUS_NOT_A_DIRECTORY;
+ }
+ }
+
+ /*
+ * 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;
}
-NTSTATUS STDCALL
+NTSTATUS NTAPI
CdfsCreate(PDEVICE_OBJECT DeviceObject,
- PIRP Irp)
+ PIRP Irp)
{
- PDEVICE_EXTENSION DeviceExt;
- NTSTATUS Status;
+ PDEVICE_EXTENSION DeviceExt;
+ NTSTATUS Status;
- if (DeviceObject == CdfsGlobalData->DeviceObject)
+ if (DeviceObject == CdfsGlobalData->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;
KeEnterCriticalRegion();
- ExAcquireResourceExclusiveLite(&DeviceExt->DirResource,
- TRUE);
- Status = CdfsCreateFile(DeviceObject,
- Irp);
- ExReleaseResourceLite(&DeviceExt->DirResource);
+ ExAcquireResourceExclusiveLite(&DeviceExt->DirResource,
+ TRUE);
+ Status = CdfsCreateFile(DeviceObject,
+ Irp);
+ ExReleaseResourceLite(&DeviceExt->DirResource);
KeLeaveCriticalRegion();
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