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sys: FSCTL_QUERY_PERSISTENT_VOLUME_STATE

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This commit is contained in:
Bill Zissimopoulos
2016-12-15 16:15:22 -08:00
parent 6eb2879374
commit 671c0c12ab
2 changed files with 60 additions and 0 deletions
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36
src/sys/fsctl.c
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@ -29,6 +29,8 @@ static NTSTATUS FspFsvolFileSystemControlOplock(
PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
static IO_COMPLETION_ROUTINE FspFsvolFileSystemControlOplockCompletion;
static WORKER_THREAD_ROUTINE FspFsvolFileSystemControlOplockCompletionWork;
static NTSTATUS FspFsvolFileSystemControlQueryPersistentVolumeState(
PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
static NTSTATUS FspFsvolFileSystemControl(
PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
FSP_IOCMPL_DISPATCH FspFsvolFileSystemControlComplete;
@ -42,6 +44,7 @@ FSP_DRIVER_DISPATCH FspFileSystemControl;
#pragma alloc_text(PAGE, FspFsvolFileSystemControlOplock)
// !#pragma alloc_text(PAGE, FspFsvolFileSystemControlOplockCompletion)
#pragma alloc_text(PAGE, FspFsvolFileSystemControlOplockCompletionWork)
#pragma alloc_text(PAGE, FspFsvolFileSystemControlQueryPersistentVolumeState)
#pragma alloc_text(PAGE, FspFsvolFileSystemControl)
#pragma alloc_text(PAGE, FspFsvolFileSystemControlComplete)
#pragma alloc_text(PAGE, FspFsvolFileSystemControlRequestFini)
@ -473,6 +476,36 @@ static VOID FspFsvolFileSystemControlOplockCompletionWork(PVOID Context)
FspFree(CompletionContext);
}
static NTSTATUS FspFsvolFileSystemControlQueryPersistentVolumeState(
PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{
PAGED_CODE();
PVOID Buffer = Irp->AssociatedIrp.SystemBuffer;
ULONG InputBufferLength = IrpSp->Parameters.FileSystemControl.InputBufferLength;
ULONG OutputBufferLength = IrpSp->Parameters.FileSystemControl.OutputBufferLength;
PFILE_FS_PERSISTENT_VOLUME_INFORMATION Info;
if (0 == Buffer)
return STATUS_INVALID_PARAMETER;
if (sizeof(FILE_FS_PERSISTENT_VOLUME_INFORMATION) > InputBufferLength ||
sizeof(FILE_FS_PERSISTENT_VOLUME_INFORMATION) > OutputBufferLength)
return STATUS_BUFFER_TOO_SMALL;
Info = Buffer;
if (1 != Info->Version ||
!FlagOn(Info->FlagMask, PERSISTENT_VOLUME_STATE_SHORT_NAME_CREATION_DISABLED))
return STATUS_INVALID_PARAMETER;
RtlZeroMemory(Info, sizeof(FILE_FS_PERSISTENT_VOLUME_INFORMATION));
Info->VolumeFlags = PERSISTENT_VOLUME_STATE_SHORT_NAME_CREATION_DISABLED;
Irp->IoStatus.Information = sizeof(FILE_FS_PERSISTENT_VOLUME_INFORMATION);
return STATUS_SUCCESS;
}
static NTSTATUS FspFsvolFileSystemControl(
PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{
@ -506,6 +539,9 @@ static NTSTATUS FspFsvolFileSystemControl(
case FSCTL_REQUEST_OPLOCK:
Result = FspFsvolFileSystemControlOplock(FsvolDeviceObject, Irp, IrpSp);
break;
case FSCTL_QUERY_PERSISTENT_VOLUME_STATE:
Result = FspFsvolFileSystemControlQueryPersistentVolumeState(FsvolDeviceObject, Irp, IrpSp);
break;
}
break;
}