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sys,dll: FspFileSystemSetMountPoint: mount manager support

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This commit is contained in:
Bill Zissimopoulos
2019-09-05 19:58:14 -07:00
parent a47f853beb
commit 565caebe4c
9 changed files with 280 additions and 11 deletions
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6
src/sys/driver.h
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@ -1105,6 +1105,7 @@ typedef struct
{
FSP_DEVICE_EXTENSION Base;
LONG IsMountdev;
BOOLEAN Persistent;
GUID UniqueId;
UNICODE_STRING VolumeName;
WCHAR VolumeNameBuf[FSP_FSCTL_VOLUME_NAME_SIZE / sizeof(WCHAR)];
@ -1248,7 +1249,8 @@ BOOLEAN FspMountdevDeviceControl(
PDEVICE_OBJECT FsvrtDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp,
PNTSTATUS PResult);
NTSTATUS FspMountdevMake(
PDEVICE_OBJECT FsvrtDeviceObject, PDEVICE_OBJECT FsvolDeviceObject);
PDEVICE_OBJECT FsvrtDeviceObject, PDEVICE_OBJECT FsvolDeviceObject,
BOOLEAN Persistent);
VOID FspMountdevFini(
PDEVICE_OBJECT FsvrtDeviceObject);
@ -1267,6 +1269,8 @@ VOID FspVolumeDelete(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
NTSTATUS FspVolumeMount(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
NTSTATUS FspVolumeMakeMountdev(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
NTSTATUS FspVolumeGetName(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
NTSTATUS FspVolumeGetNameList(

4
src/sys/fsctl.c
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@ -77,6 +77,10 @@ static NTSTATUS FspFsctlFileSystemControl(
case IRP_MN_USER_FS_REQUEST:
switch (IrpSp->Parameters.FileSystemControl.FsControlCode)
{
case FSP_FSCTL_MOUNTDEV:
if (0 != IrpSp->FileObject->FsContext2)
Result = FspVolumeMakeMountdev(FsctlDeviceObject, Irp, IrpSp);
break;
case FSP_FSCTL_VOLUME_NAME:
if (0 != IrpSp->FileObject->FsContext2)
Result = FspVolumeGetName(FsctlDeviceObject, Irp, IrpSp);

11
src/sys/mountdev.c
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@ -29,7 +29,8 @@ BOOLEAN FspMountdevDeviceControl(
PDEVICE_OBJECT FsvrtDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp,
PNTSTATUS PResult);
NTSTATUS FspMountdevMake(
PDEVICE_OBJECT FsvrtDeviceObject, PDEVICE_OBJECT FsvolDeviceObject);
PDEVICE_OBJECT FsvrtDeviceObject, PDEVICE_OBJECT FsvolDeviceObject,
BOOLEAN Persistent);
VOID FspMountdevFini(
PDEVICE_OBJECT FsvrtDeviceObject);
@ -128,7 +129,8 @@ BOOLEAN FspMountdevDeviceControl(
}
NTSTATUS FspMountdevMake(
PDEVICE_OBJECT FsvrtDeviceObject, PDEVICE_OBJECT FsvolDeviceObject)
PDEVICE_OBJECT FsvrtDeviceObject, PDEVICE_OBJECT FsvolDeviceObject,
BOOLEAN Persistent)
{
/*
* This function converts the fsvrt device into a mountdev device that
@ -151,7 +153,10 @@ NTSTATUS FspMountdevMake(
ASSERT(FsvolDeviceExtension->FsvrtDeviceObject == FsvrtDeviceObject);
if (0 != InterlockedCompareExchange(&FsvrtDeviceExtension->IsMountdev, 0, 0))
return STATUS_SUCCESS;
return Persistent == FsvrtDeviceExtension->Persistent ?
STATUS_SUCCESS : STATUS_ACCESS_DENIED;
FsvrtDeviceExtension->Persistent = Persistent;
/* make UUID v5 from the fsvrt device GUID and a unique string derived from the VolumeParams */
RtlInitEmptyUnicodeString(&String, StringBuf, sizeof StringBuf);

41
src/sys/volume.c
View File

@ -34,6 +34,10 @@ NTSTATUS FspVolumeMount(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
static NTSTATUS FspVolumeMountNoLock(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
NTSTATUS FspVolumeMakeMountdev(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
NTSTATUS FspVolumeMakeMountdevNoLock(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
NTSTATUS FspVolumeGetName(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
NTSTATUS FspVolumeGetNameList(
@ -57,6 +61,8 @@ NTSTATUS FspVolumeWork(
// ! #pragma alloc_text(PAGE, FspVolumeDeleteDelayed)
// ! #pragma alloc_text(PAGE, FspVolumeMount)
// ! #pragma alloc_text(PAGE, FspVolumeMountNoLock)
#pragma alloc_text(PAGE, FspVolumeMakeMountdev)
#pragma alloc_text(PAGE, FspVolumeMakeMountdevNoLock)
#pragma alloc_text(PAGE, FspVolumeGetName)
#pragma alloc_text(PAGE, FspVolumeGetNameList)
#pragma alloc_text(PAGE, FspVolumeGetNameListNoLock)
@ -543,6 +549,41 @@ static NTSTATUS FspVolumeMountNoLock(
return STATUS_SUCCESS;
}
NTSTATUS FspVolumeMakeMountdev(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{
PAGED_CODE();
NTSTATUS Result;
FspDeviceGlobalLock();
Result = FspVolumeMakeMountdevNoLock(FsctlDeviceObject, Irp, IrpSp);
FspDeviceGlobalUnlock();
return Result;
}
NTSTATUS FspVolumeMakeMountdevNoLock(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{
PAGED_CODE();
ASSERT(IRP_MJ_FILE_SYSTEM_CONTROL == IrpSp->MajorFunction);
ASSERT(IRP_MN_USER_FS_REQUEST == IrpSp->MinorFunction);
ASSERT(FSP_FSCTL_MOUNTDEV == IrpSp->Parameters.FileSystemControl.FsControlCode);
ASSERT(0 != IrpSp->FileObject->FsContext2);
PDEVICE_OBJECT FsvolDeviceObject = IrpSp->FileObject->FsContext2;
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(FsvolDeviceObject);
PDEVICE_OBJECT FsvrtDeviceObject = FsvolDeviceExtension->FsvrtDeviceObject;
ULONG InputBufferLength = IrpSp->Parameters.FileSystemControl.InputBufferLength;
PVOID InputBuffer = Irp->AssociatedIrp.SystemBuffer;
BOOLEAN Persistent = 0 < InputBufferLength ? !!*(PBOOLEAN)InputBuffer : FALSE;
if (0 == FsvrtDeviceObject)
return STATUS_INVALID_PARAMETER;
return FspMountdevMake(FsvrtDeviceObject, FsvolDeviceObject, Persistent);
}
NTSTATUS FspVolumeGetName(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{