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wslinux support: ATOMIC_CREATE_ECP_CONTEXT

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This commit is contained in:
Bill Zissimopoulos
2019-04-27 15:30:57 -07:00
parent 195f3bf92d
commit c01402443d
12 changed files with 250 additions and 59 deletions
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86
src/sys/create.c
View File

@ -29,7 +29,7 @@ static NTSTATUS FspFsvolCreate(
PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
static NTSTATUS FspFsvolCreateNoLock(
PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp,
BOOLEAN MainFileOpen);
BOOLEAN MainFileOpen, PFSP_ATOMIC_CREATE_ECP_CONTEXT AtomicCreateEcp);
FSP_IOPREP_DISPATCH FspFsvolCreatePrepare;
FSP_IOCMPL_DISPATCH FspFsvolCreateComplete;
static NTSTATUS FspFsvolCreateTryOpen(PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response,
@ -144,6 +144,7 @@ static NTSTATUS FspFsvolCreate(
PECP_LIST ExtraCreateParameters;
PVOID ExtraCreateParameter;
BOOLEAN MainFileOpen = FALSE;
PFSP_ATOMIC_CREATE_ECP_CONTEXT AtomicCreateEcp = 0;
/*
* Check if the IRP has ECP's.
@ -219,6 +220,21 @@ static NTSTATUS FspFsvolCreate(
}
}
#endif
if (FspFsvolDeviceExtension(FsvolDeviceObject)->VolumeParams.WslFeatures)
{
// {4720bd83-52ac-4104-a130-d1ec6a8cc8e5}
static const GUID FspAtomicCreateEcpGuid =
{ 0x4720bd83, 0x52ac, 0x4104, { 0xa1, 0x30, 0xd1, 0xec, 0x6a, 0x8c, 0xc8, 0xe5 } };
ExtraCreateParameter = 0;
AtomicCreateEcp =
NT_SUCCESS(FsRtlFindExtraCreateParameter(ExtraCreateParameters,
&FspAtomicCreateEcpGuid, &ExtraCreateParameter, 0)) &&
0 != ExtraCreateParameter &&
!FsRtlIsEcpFromUserMode(ExtraCreateParameter) ?
ExtraCreateParameter : 0;
}
}
if (!MainFileOpen)
@ -226,7 +242,8 @@ static NTSTATUS FspFsvolCreate(
FspFsvolDeviceFileRenameAcquireShared(FsvolDeviceObject);
try
{
Result = FspFsvolCreateNoLock(FsvolDeviceObject, Irp, IrpSp, FALSE);
Result = FspFsvolCreateNoLock(FsvolDeviceObject, Irp, IrpSp,
MainFileOpen, AtomicCreateEcp);
}
finally
{
@ -235,14 +252,15 @@ static NTSTATUS FspFsvolCreate(
}
}
else
Result = FspFsvolCreateNoLock(FsvolDeviceObject, Irp, IrpSp, TRUE);
Result = FspFsvolCreateNoLock(FsvolDeviceObject, Irp, IrpSp,
MainFileOpen, AtomicCreateEcp);
return Result;
}
static NTSTATUS FspFsvolCreateNoLock(
PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp,
BOOLEAN MainFileOpen)
BOOLEAN MainFileOpen, PFSP_ATOMIC_CREATE_ECP_CONTEXT AtomicCreateEcp)
{
PAGED_CODE();
@ -279,6 +297,8 @@ static NTSTATUS FspFsvolCreateNoLock(
USHORT ShareAccess = IrpSp->Parameters.Create.ShareAccess;
PFILE_FULL_EA_INFORMATION EaBuffer = Irp->AssociatedIrp.SystemBuffer;
ULONG EaLength = IrpSp->Parameters.Create.EaLength;
PVOID ExtraBuffer = 0;
ULONG ExtraLength = 0;
ULONG Flags = IrpSp->Flags;
KPROCESSOR_MODE RequestorMode =
FlagOn(Flags, SL_FORCE_ACCESS_CHECK) ? UserMode : Irp->RequestorMode;
@ -292,6 +312,7 @@ static NTSTATUS FspFsvolCreateNoLock(
BOOLEAN HasRestorePrivilege =
BooleanFlagOn(AccessState->Flags, TOKEN_HAS_RESTORE_PRIVILEGE);
BOOLEAN HasTrailingBackslash = FALSE;
BOOLEAN EaIsReparsePoint = FALSE;
FSP_FILE_NODE *FileNode, *RelatedFileNode;
FSP_FILE_DESC *FileDesc;
UNICODE_STRING MainFileName = { 0 }, StreamPart = { 0 };
@ -302,6 +323,36 @@ static NTSTATUS FspFsvolCreateNoLock(
if (FlagOn(CreateOptions, FILE_OPEN_BY_FILE_ID))
return STATUS_NOT_IMPLEMENTED;
/* is there an AtomicCreateEcp attached? */
if (0 != AtomicCreateEcp)
{
if ((FILE_CREATE != CreateDisposition && FILE_OPEN_IF != CreateDisposition) ||
0 != EaBuffer ||
RTL_SIZEOF_THROUGH_FIELD(FSP_ATOMIC_CREATE_ECP_CONTEXT, ReparseBuffer) >
AtomicCreateEcp->Size ||
/* !!!: revisit: FlagOn*/
!FlagOn(AtomicCreateEcp->InFlags,
ATOMIC_CREATE_ECP_IN_FLAG_BEST_EFFORT |
ATOMIC_CREATE_ECP_IN_FLAG_REPARSE_POINT_SPECIFIED))
return STATUS_INVALID_PARAMETER; /* docs do not say what to return on failure! */
if (FlagOn(AtomicCreateEcp->InFlags,
ATOMIC_CREATE_ECP_IN_FLAG_REPARSE_POINT_SPECIFIED))
{
Result = FsRtlValidateReparsePointBuffer(AtomicCreateEcp->ReparseBufferLength,
AtomicCreateEcp->ReparseBuffer);
if (!NT_SUCCESS(Result))
return Result;
/* mark that we satisfied the reparse point request, although we may fail it later! */
AtomicCreateEcp->OutFlags = ATOMIC_CREATE_ECP_OUT_FLAG_REPARSE_POINT_SET;
ExtraBuffer = AtomicCreateEcp->ReparseBuffer;
ExtraLength = AtomicCreateEcp->ReparseBufferLength;
EaIsReparsePoint = TRUE;
}
}
/* was an EA buffer specified? */
if (0 != EaBuffer)
{
@ -318,6 +369,9 @@ static NTSTATUS FspFsvolCreateNoLock(
EaBuffer, EaLength, (PULONG)&Irp->IoStatus.Information);
if (!NT_SUCCESS(Result))
return Result;
ExtraBuffer = EaBuffer;
ExtraLength = EaLength;
}
/* cannot open a paging file */
@ -555,9 +609,9 @@ static NTSTATUS FspFsvolCreateNoLock(
SecurityDescriptorSize = 0;
FileAttributes = 0;
/* cannot set EA on named stream */
EaBuffer = 0;
EaLength = 0;
/* cannot set extra buffer on named stream */
ExtraBuffer = 0;
ExtraLength = 0;
/* remember the main file node */
ASSERT(0 == FileNode->MainFileNode);
@ -577,8 +631,8 @@ static NTSTATUS FspFsvolCreateNoLock(
/* create the user-mode file system request */
Result = FspIopCreateRequestEx(Irp, &FileNode->FileName,
0 != EaBuffer ?
FSP_FSCTL_DEFAULT_ALIGN_UP(SecurityDescriptorSize) + EaLength : SecurityDescriptorSize,
0 != ExtraBuffer ?
FSP_FSCTL_DEFAULT_ALIGN_UP(SecurityDescriptorSize) + ExtraLength : SecurityDescriptorSize,
FspFsvolCreateRequestFini, &Request);
if (!NT_SUCCESS(Result))
{
@ -616,10 +670,10 @@ static NTSTATUS FspFsvolCreateNoLock(
Request->Req.Create.DesiredAccess = DesiredAccess;
Request->Req.Create.GrantedAccess = GrantedAccess;
Request->Req.Create.ShareAccess = ShareAccess;
Request->Req.Create.Ea.Offset = 0 != EaBuffer ?
Request->Req.Create.Ea.Offset = 0 != ExtraBuffer ?
(0 != Request->Req.Create.SecurityDescriptor.Offset ?
NEXTOFS(Request->Req.Create.SecurityDescriptor) : NEXTOFS(Request->FileName)) : 0;
Request->Req.Create.Ea.Size = 0 != EaBuffer ? (UINT16)EaLength : 0;
Request->Req.Create.Ea.Size = 0 != ExtraBuffer ? (UINT16)ExtraLength : 0;
Request->Req.Create.UserMode = UserMode == RequestorMode;
Request->Req.Create.HasTraversePrivilege = HasTraversePrivilege;
Request->Req.Create.HasBackupPrivilege = HasBackupPrivilege;
@ -628,10 +682,10 @@ static NTSTATUS FspFsvolCreateNoLock(
Request->Req.Create.CaseSensitive = CaseSensitive;
Request->Req.Create.HasTrailingBackslash = HasTrailingBackslash;
Request->Req.Create.NamedStream = MainFileName.Length;
#undef NEXTOFS
Request->Req.Create.AcceptsSecurityDescriptor = 0 == Request->Req.Create.NamedStream &&
!!FsvolDeviceExtension->VolumeParams.AllowOpenInKernelMode;
Request->Req.Create.EaIsReparsePoint = EaIsReparsePoint;
#undef NEXTOFS
ASSERT(
0 == StreamPart.Length && 0 == MainFileName.Length ||
@ -642,10 +696,10 @@ static NTSTATUS FspFsvolCreateNoLock(
RtlCopyMemory(Request->Buffer + Request->Req.Create.SecurityDescriptor.Offset,
SecurityDescriptor, SecurityDescriptorSize);
/* copy the EA buffer (if any) into the request */
if (0 != EaBuffer)
/* copy the extra buffer (if any) into the request */
if (0 != ExtraBuffer)
RtlCopyMemory(Request->Buffer + Request->Req.Create.Ea.Offset,
EaBuffer, EaLength);
ExtraBuffer, ExtraLength);
/* fix FileNode->FileName if we are doing SL_OPEN_TARGET_DIRECTORY */
if (Request->Req.Create.OpenTargetDirectory)

35
src/sys/driver.h
View File

@ -1678,4 +1678,39 @@ typedef struct
ULONG LxDeviceIdMajor;
ULONG LxDeviceIdMinor;
} FSP_FILE_STAT_LX_INFORMATION, *PFSP_FILE_STAT_LX_INFORMATION;
/* ATOMIC_CREATE_ECP_CONTEXT is missing on some WDK's */
#define ATOMIC_CREATE_ECP_IN_FLAG_REPARSE_POINT_SPECIFIED 0x0002
#define ATOMIC_CREATE_ECP_OUT_FLAG_REPARSE_POINT_SET 0x0002
#define ATOMIC_CREATE_ECP_IN_FLAG_BEST_EFFORT 0x0100
typedef struct
{
LARGE_INTEGER CreationTime;
LARGE_INTEGER LastAccessTime;
LARGE_INTEGER LastWriteTime;
LARGE_INTEGER ChangeTime;
} FSP_FILE_TIMESTAMPS, *PFSP_FILE_TIMESTAMPS;
typedef struct
{
USHORT Size;
USHORT InFlags;
USHORT OutFlags;
USHORT ReparseBufferLength;
PREPARSE_DATA_BUFFER ReparseBuffer;
LONGLONG FileSize;
LONGLONG ValidDataLength;
PFSP_FILE_TIMESTAMPS FileTimestamps;
ULONG FileAttributes;
ULONG UsnSourceInfo;
USN Usn;
ULONG SuppressFileAttributeInheritanceMask;
ULONG InOpFlags;
ULONG OutOpFlags;
ULONG InGenFlags;
ULONG OutGenFlags;
ULONG CaseSensitiveFlagsMask;
ULONG InCaseSensitiveFlags;
ULONG OutCaseSensitiveFlags;
} FSP_ATOMIC_CREATE_ECP_CONTEXT, *PFSP_ATOMIC_CREATE_ECP_CONTEXT;
#endif

10
src/sys/fileinfo.c
View File

@ -981,10 +981,16 @@ static NTSTATUS FspFsvolQueryInformation(
Result = FspFsvolQueryStandardInformation(FileObject, &Buffer, BufferEnd, 0);
break;
case 68/*FileStatInformation*/:
Result = FspFsvolQueryStatBaseInformation(FileObject, &Buffer, BufferEnd, 0);
if (FspFsvolDeviceExtension(FsvolDeviceObject)->VolumeParams.WslFeatures)
Result = FspFsvolQueryStatBaseInformation(FileObject, &Buffer, BufferEnd, 0);
else
Result = STATUS_INVALID_PARAMETER;
break;
case 70/*FileStatLxInformation*/:
Result = FspFsvolQueryStatLxBaseInformation(FileObject, &Buffer, BufferEnd, 0);
if (FspFsvolDeviceExtension(FsvolDeviceObject)->VolumeParams.WslFeatures)
Result = FspFsvolQueryStatLxBaseInformation(FileObject, &Buffer, BufferEnd, 0);
else
Result = STATUS_INVALID_PARAMETER;
break;
default:
Result = STATUS_INVALID_PARAMETER;