5 Jul
2006
5 Jul
'06
7:55 p.m.
Author: ion
Date: Wed Jul 5 23:55:25 2006
New Revision: 22868
URL: http://svn.reactos.org/svn/reactos?rev=22868&view=rev
Log:
[FORMATTING] - Fix formatting in IoCreateFile
Modified:
trunk/reactos/ntoskrnl/io/iomgr/file.c
Modified: trunk/reactos/ntoskrnl/io/iomgr/file.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/io/iomgr/file.c?r…
==============================================================================
--- trunk/reactos/ntoskrnl/io/iomgr/file.c (original)
+++ trunk/reactos/ntoskrnl/io/iomgr/file.c Wed Jul 5 23:55:25 2006
@@ -795,199 +795,121 @@
}
/*
- * NAME EXPORTED
- * IoCreateFile@56
- *
- * DESCRIPTION
- * Either causes a new file or directory to be created, or it
- * opens an existing file, device, directory or volume, giving
- * the caller a handle for the file object. This handle can be
- * used by subsequent calls to manipulate data within the file
- * or the file object's state of attributes.
- *
- * ARGUMENTS
- * FileHandle (OUT)
- * Points to a variable which receives the file handle
- * on return;
- *
- * DesiredAccess
- * Desired access to the file;
- *
- * ObjectAttributes
- * Structure describing the file;
- *
- * IoStatusBlock (OUT)
- * Receives information about the operation on return;
- *
- * AllocationSize [OPTIONAL]
- * Initial size of the file in bytes;
- *
- * FileAttributes
- * Attributes to create the file with;
- *
- * ShareAccess
- * Type of shared access the caller would like to the
- * file;
- *
- * CreateDisposition
- * Specifies what to do, depending on whether the
- * file already exists;
- *
- * CreateOptions
- * Options for creating a new file;
- *
- * EaBuffer [OPTIONAL]
- * Undocumented;
- *
- * EaLength
- * Undocumented;
- *
- * CreateFileType
- * Type of file (normal, named pipe, mailslot) to create;
- *
- * ExtraCreateParameters [OPTIONAL]
- * Additional creation data for named pipe and mailsots;
- *
- * Options
- * Undocumented.
- *
- * RETURN VALUE
- * Status
- *
- * NOTE
- * Prototype taken from Bo Branten's ntifs.h v15.
- * Description taken from old NtCreateFile's which is
- * now a wrapper of this call.
- *
- * REVISIONS
- *
* @implemented
*/
NTSTATUS
-STDCALL
-IoCreateFile(OUT PHANDLE FileHandle,
- IN ACCESS_MASK DesiredAccess,
+NTAPI
+IoCreateFile(OUT PHANDLE FileHandle,
+ IN ACCESS_MASK DesiredAccess,
IN POBJECT_ATTRIBUTES ObjectAttributes,
OUT PIO_STATUS_BLOCK IoStatusBlock,
- IN PLARGE_INTEGER AllocationSize OPTIONAL,
- IN ULONG FileAttributes,
- IN ULONG ShareAccess,
- IN ULONG CreateDisposition,
- IN ULONG CreateOptions,
- IN PVOID EaBuffer OPTIONAL,
- IN ULONG EaLength,
+ IN PLARGE_INTEGER AllocationSize OPTIONAL,
+ IN ULONG FileAttributes,
+ IN ULONG ShareAccess,
+ IN ULONG CreateDisposition,
+ IN ULONG CreateOptions,
+ IN PVOID EaBuffer OPTIONAL,
+ IN ULONG EaLength,
IN CREATE_FILE_TYPE CreateFileType,
- IN PVOID ExtraCreateParameters OPTIONAL,
- IN ULONG Options)
-{
- PFILE_OBJECT FileObject = NULL;
- //PDEVICE_OBJECT DeviceObject;
- PIRP Irp;
- PEXTENDED_IO_STACK_LOCATION StackLoc;
- IO_SECURITY_CONTEXT SecurityContext;
- KPROCESSOR_MODE AccessMode;
- HANDLE LocalHandle;
- LARGE_INTEGER SafeAllocationSize;
- PVOID SystemEaBuffer = NULL;
- NTSTATUS Status = STATUS_SUCCESS;
- AUX_DATA AuxData;
- ACCESS_STATE AccessState;
+ IN PVOID ExtraCreateParameters OPTIONAL,
+ IN ULONG Options)
+{
+ PFILE_OBJECT FileObject = NULL;
+ PIRP Irp;
+ PEXTENDED_IO_STACK_LOCATION StackLoc;
+ IO_SECURITY_CONTEXT SecurityContext;
+ KPROCESSOR_MODE AccessMode;
+ HANDLE LocalHandle = 0;
+ LARGE_INTEGER SafeAllocationSize;
+ PVOID SystemEaBuffer = NULL;
+ NTSTATUS Status = STATUS_SUCCESS;
+ AUX_DATA AuxData;
+ ACCESS_STATE AccessState;
KIRQL OldIrql;
PKNORMAL_ROUTINE NormalRoutine;
PVOID NormalContext;
-
- DPRINT("IoCreateFile(FileHandle 0x%p, DesiredAccess %x, "
- "ObjectAttributes 0x%p ObjectAttributes->ObjectName->Buffer
%S)\n",
- FileHandle,DesiredAccess,ObjectAttributes,
- ObjectAttributes->ObjectName->Buffer);
-
- ASSERT_IRQL(PASSIVE_LEVEL);
-
- if (IoStatusBlock == NULL || FileHandle == NULL)
- return STATUS_ACCESS_VIOLATION;
-
- LocalHandle = 0;
-
- if(Options & IO_NO_PARAMETER_CHECKING)
- AccessMode = KernelMode;
- else
- AccessMode = ExGetPreviousMode();
-
- if(AccessMode != KernelMode)
- {
- _SEH_TRY
- {
- ProbeForWriteHandle(FileHandle);
- ProbeForWrite(IoStatusBlock,
- sizeof(IO_STATUS_BLOCK),
- sizeof(ULONG));
- if(AllocationSize != NULL)
- {
- SafeAllocationSize = ProbeForReadLargeInteger(AllocationSize);
- }
- else
- SafeAllocationSize.QuadPart = 0;
-
- if(EaBuffer != NULL && EaLength > 0)
- {
- ProbeForRead(EaBuffer,
- EaLength,
- sizeof(ULONG));
-
- /* marshal EaBuffer */
- SystemEaBuffer = ExAllocatePool(NonPagedPool,
- EaLength);
- if(SystemEaBuffer == NULL)
- {
- Status = STATUS_INSUFFICIENT_RESOURCES;
- _SEH_LEAVE;
- }
-
- RtlCopyMemory(SystemEaBuffer,
- EaBuffer,
- EaLength);
- }
- }
- _SEH_HANDLE
- {
- Status = _SEH_GetExceptionCode();
- }
- _SEH_END;
-
- if(!NT_SUCCESS(Status))
- {
- return Status;
- }
- }
- else
- {
- if(AllocationSize != NULL)
- SafeAllocationSize = *AllocationSize;
- else
- SafeAllocationSize.QuadPart = 0;
-
- if(EaBuffer != NULL && EaLength > 0)
- {
- SystemEaBuffer = EaBuffer;
- }
- }
-
- if(Options & IO_CHECK_CREATE_PARAMETERS)
- {
- DPRINT1("FIXME: IO_CHECK_CREATE_PARAMETERS not yet supported!\n");
- }
-
- RtlMapGenericMask(&DesiredAccess,
&IoFileObjectType->TypeInfo.GenericMapping);
-
- /* First try to open an existing named object */
- Status = ObOpenObjectByName(ObjectAttributes,
- NULL,
- AccessMode,
- NULL,
- DesiredAccess,
- NULL,
- &LocalHandle);
-
+ PAGED_CODE();
+
+ if(Options & IO_NO_PARAMETER_CHECKING)
+ {
+ AccessMode = KernelMode;
+ }
+ else
+ {
+ AccessMode = ExGetPreviousMode();
+ }
+
+ if(AccessMode != KernelMode)
+ {
+ _SEH_TRY
+ {
+ ProbeForWriteHandle(FileHandle);
+ ProbeForWrite(IoStatusBlock,
+ sizeof(IO_STATUS_BLOCK),
+ sizeof(ULONG));
+ if (AllocationSize)
+ {
+ SafeAllocationSize = ProbeForReadLargeInteger(AllocationSize);
+ }
+ else
+ {
+ SafeAllocationSize.QuadPart = 0;
+ }
+
+ if ((EaBuffer) && (EaLength))
+ {
+ ProbeForRead(EaBuffer,
+ EaLength,
+ sizeof(ULONG));
+
+ /* marshal EaBuffer */
+ SystemEaBuffer = ExAllocatePool(NonPagedPool, EaLength);
+ if(!SystemEaBuffer)
+ {
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ _SEH_LEAVE;
+ }
+
+ RtlCopyMemory(SystemEaBuffer, EaBuffer, EaLength);
+ }
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ if(!NT_SUCCESS(Status)) return Status;
+ }
+ else
+ {
+ if (AllocationSize)
+ {
+ SafeAllocationSize = *AllocationSize;
+ }
+ else
+ {
+ SafeAllocationSize.QuadPart = 0;
+ }
+
+ if ((EaBuffer) && (EaLength)) SystemEaBuffer = EaBuffer;
+ }
+
+ if(Options & IO_CHECK_CREATE_PARAMETERS)
+ {
+ DPRINT1("FIXME: IO_CHECK_CREATE_PARAMETERS not yet supported!\n");
+ }
+
+ RtlMapGenericMask(&DesiredAccess,
&IoFileObjectType->TypeInfo.GenericMapping);
+
+ /* First try to open an existing named object */
+ Status = ObOpenObjectByName(ObjectAttributes,
+ NULL,
+ AccessMode,
+ NULL,
+ DesiredAccess,
+ NULL,
+ &LocalHandle);
ObReferenceObjectByHandle(LocalHandle,
DesiredAccess,
NULL,
@@ -999,10 +921,6 @@
FileObject->Type = IO_TYPE_FILE;
FileObject->Size = sizeof(FILE_OBJECT);
- //
- // stop stuff that should be in IopParseDevice
- //
-
if (CreateOptions &
(FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT))
{
@@ -1034,107 +952,84 @@
{
FileObject->Flags |= FO_OPENED_CASE_SENSITIVE;
}
- /*
- * FIXME: We should get the access state from Ob once this function becomes
- * a parse routine once the Ob is refactored.
- */
- SeCreateAccessState(&AccessState, &AuxData, FILE_ALL_ACCESS, NULL);
-
- SecurityContext.SecurityQos = NULL; /* ?? */
- SecurityContext.AccessState = &AccessState;
- SecurityContext.DesiredAccess = DesiredAccess;
- SecurityContext.FullCreateOptions = CreateOptions;
-
- KeInitializeEvent(&FileObject->Lock, SynchronizationEvent, TRUE);
- KeInitializeEvent(&FileObject->Event, NotificationEvent, FALSE);
-
- DPRINT("FileObject 0x%p\n", FileObject);
- DPRINT("FileObject->DeviceObject 0x%p\n", FileObject->DeviceObject);
- /*
- * Create a new IRP to hand to
- * the FS driver: this may fail
- * due to resource shortage.
- */
- Irp = IoAllocateIrp(FileObject->DeviceObject->StackSize, FALSE);
- if (Irp == NULL)
- {
- ZwClose(LocalHandle);
- return STATUS_UNSUCCESSFUL;
- }
-
- /* Now set the IRP data */
- Irp->Tail.Overlay.OriginalFileObject = FileObject;
- Irp->RequestorMode = AccessMode;
- Irp->Flags = IRP_CREATE_OPERATION |
- IRP_SYNCHRONOUS_API |
- IRP_DEFER_IO_COMPLETION;
- Irp->Tail.Overlay.Thread = PsGetCurrentThread();
- Irp->UserEvent = &FileObject->Event;
- Irp->UserIosb = IoStatusBlock;
- Irp->MdlAddress = NULL;
- Irp->PendingReturned = FALSE;
- Irp->UserEvent = NULL;
- Irp->Cancel = FALSE;
- Irp->CancelRoutine = NULL;
- Irp->Tail.Overlay.AuxiliaryBuffer = NULL;
-
- /*
- * Get the stack location for the new
- * IRP and prepare it.
- */
- StackLoc = (PEXTENDED_IO_STACK_LOCATION)IoGetNextIrpStackLocation(Irp);
- StackLoc->Control = 0;
- StackLoc->FileObject = FileObject;
-
- switch (CreateFileType)
- {
- default:
- case CreateFileTypeNone:
- StackLoc->MajorFunction = IRP_MJ_CREATE;
- StackLoc->Flags = Options;
- StackLoc->Parameters.Create.EaLength = SystemEaBuffer != NULL ? EaLength :
0;
- StackLoc->Flags |= !(ObjectAttributes->Attributes &
OBJ_CASE_INSENSITIVE) ? SL_CASE_SENSITIVE: 0;
- break;
-
- case CreateFileTypeNamedPipe:
- StackLoc->MajorFunction = IRP_MJ_CREATE_NAMED_PIPE;
- StackLoc->Parameters.CreatePipe.Parameters = ExtraCreateParameters;
- break;
-
- case CreateFileTypeMailslot:
- StackLoc->MajorFunction = IRP_MJ_CREATE_MAILSLOT;
- StackLoc->Parameters.CreateMailslot.Parameters = ExtraCreateParameters;
- break;
- }
-
- /* Set the common data */
- Irp->Overlay.AllocationSize = SafeAllocationSize;
- Irp->AssociatedIrp.SystemBuffer = SystemEaBuffer;
- StackLoc->Parameters.Create.Options = (CreateDisposition << 24) |
(CreateOptions & 0x00FFFFFF);
- StackLoc->Parameters.Create.FileAttributes = FileAttributes;
- StackLoc->Parameters.Create.ShareAccess = ShareAccess;
- StackLoc->Parameters.Create.SecurityContext = &SecurityContext;
-
- /*
- * Now call the driver and
- * possibly wait if it can
- * not complete the request
- * immediately.
- */
- Status = IofCallDriver(FileObject->DeviceObject, Irp );
- DPRINT("Status :%x\n", Status);
-
- if (Status == STATUS_PENDING)
- {
- KeWaitForSingleObject(&FileObject->Event,
- Executive,
- AccessMode,
- FALSE,
- NULL);
- Status = IoStatusBlock->Status;
- }
- else
- {
+
+ SeCreateAccessState(&AccessState, &AuxData, FILE_ALL_ACCESS, NULL);
+ SecurityContext.SecurityQos = NULL; /* ?? */
+ SecurityContext.AccessState = &AccessState;
+ SecurityContext.DesiredAccess = DesiredAccess;
+ SecurityContext.FullCreateOptions = CreateOptions;
+
+ KeInitializeEvent(&FileObject->Lock, SynchronizationEvent, TRUE);
+ KeInitializeEvent(&FileObject->Event, NotificationEvent, FALSE);
+
+ Irp = IoAllocateIrp(FileObject->DeviceObject->StackSize, FALSE);
+ if (!Irp)
+ {
+ ZwClose(LocalHandle);
+ return STATUS_UNSUCCESSFUL;
+ }
+
+ /* Now set the IRP data */
+ Irp->Tail.Overlay.OriginalFileObject = FileObject;
+ Irp->RequestorMode = AccessMode;
+ Irp->Flags = IRP_CREATE_OPERATION |
+ IRP_SYNCHRONOUS_API |
+ IRP_DEFER_IO_COMPLETION;
+ Irp->Tail.Overlay.Thread = PsGetCurrentThread();
+ Irp->UserEvent = &FileObject->Event;
+ Irp->UserIosb = IoStatusBlock;
+ Irp->MdlAddress = NULL;
+ Irp->PendingReturned = FALSE;
+ Irp->UserEvent = NULL;
+ Irp->Cancel = FALSE;
+ Irp->CancelRoutine = NULL;
+ Irp->Tail.Overlay.AuxiliaryBuffer = NULL;
+
+ StackLoc = (PEXTENDED_IO_STACK_LOCATION)IoGetNextIrpStackLocation(Irp);
+ StackLoc->Control = 0;
+ StackLoc->FileObject = FileObject;
+
+ switch (CreateFileType)
+ {
+ default:
+ case CreateFileTypeNone:
+ StackLoc->MajorFunction = IRP_MJ_CREATE;
+ StackLoc->Flags = Options;
+ StackLoc->Parameters.Create.EaLength = SystemEaBuffer != NULL ? EaLength :
0;
+ StackLoc->Flags |= !(ObjectAttributes->Attributes &
OBJ_CASE_INSENSITIVE) ? SL_CASE_SENSITIVE: 0;
+ break;
+
+ case CreateFileTypeNamedPipe:
+ StackLoc->MajorFunction = IRP_MJ_CREATE_NAMED_PIPE;
+ StackLoc->Parameters.CreatePipe.Parameters = ExtraCreateParameters;
+ break;
+
+ case CreateFileTypeMailslot:
+ StackLoc->MajorFunction = IRP_MJ_CREATE_MAILSLOT;
+ StackLoc->Parameters.CreateMailslot.Parameters = ExtraCreateParameters;
+ break;
+ }
+
+ /* Set the common data */
+ Irp->Overlay.AllocationSize = SafeAllocationSize;
+ Irp->AssociatedIrp.SystemBuffer = SystemEaBuffer;
+ StackLoc->Parameters.Create.Options = (CreateDisposition << 24) |
(CreateOptions & 0x00FFFFFF);
+ StackLoc->Parameters.Create.FileAttributes = FileAttributes;
+ StackLoc->Parameters.Create.ShareAccess = ShareAccess;
+ StackLoc->Parameters.Create.SecurityContext = &SecurityContext;
+
+ Status = IofCallDriver(FileObject->DeviceObject, Irp );
+ if (Status == STATUS_PENDING)
+ {
+ KeWaitForSingleObject(&FileObject->Event,
+ Executive,
+ AccessMode,
+ FALSE,
+ NULL);
+ Status = IoStatusBlock->Status;
+ }
+ else
+ {
/* We'll have to complete it ourselves */
ASSERT(!Irp->PendingReturned);
KeRaiseIrql(APC_LEVEL, &OldIrql);
@@ -1144,38 +1039,34 @@
(PVOID*)&FileObject,
&NormalContext);
KeLowerIrql(OldIrql);
- }
- if (!NT_SUCCESS(Status))
- {
- DPRINT("Failing create request with status %x\n", Status);
- FileObject->DeviceObject = NULL;
- FileObject->Vpb = NULL;
- ObDereferenceObject(FileObject);
- }
- else
- {
- _SEH_TRY
- {
- *FileHandle = LocalHandle;
- }
- _SEH_HANDLE
- {
- Status = _SEH_GetExceptionCode();
- }
- _SEH_END;
- }
-
- /* cleanup EABuffer if captured */
- if(AccessMode != KernelMode && SystemEaBuffer != NULL)
- {
- ExFreePool(SystemEaBuffer);
- }
-
- ASSERT_IRQL(PASSIVE_LEVEL);
-
- DPRINT("Finished IoCreateFile() (*FileHandle) 0x%p\n", (*FileHandle));
-
- return Status;
+ }
+
+ if (!NT_SUCCESS(Status))
+ {
+ FileObject->DeviceObject = NULL;
+ FileObject->Vpb = NULL;
+ ObDereferenceObject(FileObject);
+ }
+ else
+ {
+ _SEH_TRY
+ {
+ *FileHandle = LocalHandle;
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+ }
+
+ /* cleanup EABuffer if captured */
+ if (AccessMode != KernelMode && (SystemEaBuffer))
+ {
+ ExFreePool(SystemEaBuffer);
+ }
+
+ return Status;
}
/*
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