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115 lines
3.4 KiB
C
115 lines
3.4 KiB
C
/**
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* @file sys/cleanup.c
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*
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* @copyright 2015 Bill Zissimopoulos
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*/
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#include <sys/driver.h>
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static NTSTATUS FspFsctlCleanup(
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PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
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static NTSTATUS FspFsvrtCleanup(
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PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
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static NTSTATUS FspFsvolCleanup(
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PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
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FSP_IOCMPL_DISPATCH FspFsvolCleanupComplete;
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FSP_DRIVER_DISPATCH FspCleanup;
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, FspFsctlCleanup)
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#pragma alloc_text(PAGE, FspFsvrtCleanup)
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#pragma alloc_text(PAGE, FspFsvolCleanup)
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#pragma alloc_text(PAGE, FspFsvolCleanupComplete)
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#pragma alloc_text(PAGE, FspCleanup)
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#endif
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static NTSTATUS FspFsctlCleanup(
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PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
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{
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PAGED_CODE();
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if (0 != IrpSp->FileObject->FsContext2)
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FspVolumeDelete(DeviceObject, Irp, IrpSp);
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Irp->IoStatus.Information = 0;
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return STATUS_SUCCESS;
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}
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static NTSTATUS FspFsvrtCleanup(
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PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
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{
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PAGED_CODE();
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Irp->IoStatus.Information = 0;
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return STATUS_SUCCESS;
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}
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static NTSTATUS FspFsvolCleanup(
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PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
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{
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PAGED_CODE();
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/* is this a valid FileObject? */
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if (!FspFileNodeIsValid(IrpSp->FileObject->FsContext))
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return STATUS_SUCCESS;
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PFILE_OBJECT FileObject = IrpSp->FileObject;
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FSP_FILE_NODE *FileNode = FileObject->FsContext;
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FSP_FILE_DESC *FileDesc = FileObject->FsContext2;
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FSP_FSCTL_TRANSACT_REQ *Request;
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BOOLEAN DeletePending;
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ASSERT(FileNode == FileDesc->FileNode);
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FspFileNodeClose(FileNode, FileObject, &DeletePending);
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/*
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* If DeletePending is TRUE, the FileNode is no longer in the Context table,
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* therefore we do not need to protect its FileName against renames!
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*/
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/* create the user-mode file system request; MustSucceed because IRP_MJ_CLEANUP cannot fail */
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FspIopCreateRequestMustSucceed(Irp, DeletePending ? &FileNode->FileName : 0, 0, &Request);
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Request->Kind = FspFsctlTransactCleanupKind;
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Request->Req.Cleanup.UserContext = FileNode->UserContext;
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Request->Req.Cleanup.UserContext2 = FileDesc->UserContext2;
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Request->Req.Cleanup.Delete = DeletePending;
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return FSP_STATUS_IOQ_POST_BEST_EFFORT;
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/*
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* Note that it is still possible for this request to not be delivered,
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* if the volume device Ioq is stopped. But such failures are benign
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* from our perspective, because they mean that the file system is going
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* away and should correctly tear things down.
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*/
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}
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NTSTATUS FspFsvolCleanupComplete(
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PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response)
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{
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FSP_ENTER_IOC(PAGED_CODE());
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FSP_LEAVE_IOC("FileObject=%p", IrpSp->FileObject);
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}
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NTSTATUS FspCleanup(
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PDEVICE_OBJECT DeviceObject, PIRP Irp)
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{
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FSP_ENTER_MJ(PAGED_CODE());
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switch (FspDeviceExtension(DeviceObject)->Kind)
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{
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case FspFsvolDeviceExtensionKind:
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FSP_RETURN(Result = FspFsvolCleanup(DeviceObject, Irp, IrpSp));
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case FspFsvrtDeviceExtensionKind:
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FSP_RETURN(Result = FspFsvrtCleanup(DeviceObject, Irp, IrpSp));
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case FspFsctlDeviceExtensionKind:
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FSP_RETURN(Result = FspFsctlCleanup(DeviceObject, Irp, IrpSp));
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default:
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FSP_RETURN(Result = STATUS_INVALID_DEVICE_REQUEST);
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}
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FSP_LEAVE_MJ("FileObject=%p", IrpSp->FileObject);
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}
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