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Split NtfsFsdDispatch() in two.
Now, NtfsFsdDispatch() will only take care of allocating the IRP context and complete the IRP in case it failed (that fixes a null-pointer dereference, just for the record).
NtfsDispatch() will really dispatch the IRP to the internal functions. So that it can be called either directly from NtfsFsdDispatch() or by a queued IRP (to be implemented).

svn path=/trunk/; revision=67875
This commit is contained in:
Pierre Schweitzer 2015-05-24 10:48:15 +00:00
parent c1600b9458
commit ab8558bafd
1 changed files with 55 additions and 39 deletions
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94
reactos/drivers/filesystems/ntfs/dispatch.c
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@ -33,61 +33,45 @@
/* FUNCTIONS ****************************************************************/
/*
* FUNCTION: This function manages IRP for various major functions
* ARGUMENTS:
* DriverObject = object describing this driver
* Irp = IRP to be passed to internal functions
* RETURNS: Status of I/O Request
*/
static
NTSTATUS
NTAPI
NtfsFsdDispatch(PDEVICE_OBJECT DeviceObject,
PIRP Irp)
NtfsDispatch(PNTFS_IRP_CONTEXT IrpContext)
{
PNTFS_IRP_CONTEXT IrpContext = NULL;
PIRP Irp = IrpContext->Irp;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
TRACE_(NTFS, "NtfsFsdDispatch()\n");
TRACE_(NTFS, "NtfsDispatch()\n");
FsRtlEnterFileSystem();
ASSERT(DeviceObject);
ASSERT(Irp);
NtfsIsIrpTopLevel(Irp);
IrpContext = NtfsAllocateIrpContext(DeviceObject, Irp);
if (IrpContext)
switch (IrpContext->MajorFunction)
{
switch (IrpContext->MajorFunction)
{
case IRP_MJ_QUERY_VOLUME_INFORMATION:
Status = NtfsQueryVolumeInformation(IrpContext);
break;
case IRP_MJ_QUERY_VOLUME_INFORMATION:
Status = NtfsQueryVolumeInformation(IrpContext);
break;
case IRP_MJ_SET_VOLUME_INFORMATION:
Status = NtfsSetVolumeInformation(IrpContext);
break;
case IRP_MJ_SET_VOLUME_INFORMATION:
Status = NtfsSetVolumeInformation(IrpContext);
break;
case IRP_MJ_QUERY_INFORMATION:
Status = NtfsQueryInformation(IrpContext);
break;
case IRP_MJ_QUERY_INFORMATION:
Status = NtfsQueryInformation(IrpContext);
break;
case IRP_MJ_DIRECTORY_CONTROL:
Status = NtfsDirectoryControl(IrpContext);
break;
case IRP_MJ_DIRECTORY_CONTROL:
Status = NtfsDirectoryControl(IrpContext);
break;
case IRP_MJ_READ:
Status = NtfsRead(IrpContext);
break;
case IRP_MJ_READ:
Status = NtfsRead(IrpContext);
break;
case IRP_MJ_DEVICE_CONTROL:
Status = NtfsDeviceControl(IrpContext);
break;
}
case IRP_MJ_DEVICE_CONTROL:
Status = NtfsDeviceControl(IrpContext);
break;
}
else
Status = STATUS_INSUFFICIENT_RESOURCES;
ASSERT((!(IrpContext->Flags & IRPCONTEXT_COMPLETE) && !(IrpContext->Flags & IRPCONTEXT_QUEUE)) ||
((IrpContext->Flags & IRPCONTEXT_COMPLETE) && !(IrpContext->Flags & IRPCONTEXT_QUEUE)) ||
@ -107,3 +91,35 @@ NtfsFsdDispatch(PDEVICE_OBJECT DeviceObject,
return Status;
}
/*
* FUNCTION: This function manages IRP for various major functions
* ARGUMENTS:
* DriverObject = object describing this driver
* Irp = IRP to be passed to internal functions
* RETURNS: Status of I/O Request
*/
NTSTATUS
NTAPI
NtfsFsdDispatch(PDEVICE_OBJECT DeviceObject,
PIRP Irp)
{
PNTFS_IRP_CONTEXT IrpContext = NULL;
NTSTATUS Status;
TRACE_(NTFS, "NtfsFsdDispatch()\n");
IrpContext = NtfsAllocateIrpContext(DeviceObject, Irp);
if (IrpContext == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
Irp->IoStatus.Status = Status;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
}
else
{
Status = NtfsDispatch(IrpContext);
}
return Status;
}