lockctrl.c

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/*
 * PROJECT:     ReactOS NTFS driver
 * LICENSE:     GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
 * PURPOSE:     Byte range locks
 * COPYRIGHT:   Copyright 2026 Justin Miller <justinmiller100@gmail.com>
 */
 
/* INCLUDES *****************************************************************/
 
#include "ntfs.h"
 
#define NDEBUG
#include <debug.h>
 
/* FUNCTIONS ****************************************************************/
 
NTSTATUS
NTAPI
NtfsLockControl(
    _In_ PNTFS_IRP_CONTEXT IrpContext)
{
    PNTFS_FCB Fcb;
 
    DPRINT("NtfsLockControl(%p)\n", IrpContext);
 
    if (IrpContext->DeviceObject == NtfsGlobalData->DeviceObject)
        return STATUS_INVALID_DEVICE_REQUEST;
 
    /* Only the data of regular files can be locked */
    if (!NtfsIsRegularFileObject(IrpContext->FileObject))
        return STATUS_INVALID_PARAMETER;
 
    Fcb = (PNTFS_FCB)IrpContext->FileObject->FsContext;
 
    /* FsRtl completes the IRP, or keeps it until a conflicting lock goes away */
    IrpContext->Flags &= ~IRPCONTEXT_COMPLETE;
 
    return FsRtlProcessFileLock(&Fcb->FileLock, IrpContext->Irp, NULL);
}
 
/* EOF */