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sys: IRP_MJ_CREATE

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This commit is contained in:
Bill Zissimopoulos 2015-12-03 21:46:26 -08:00
parent 8c3f912e05
commit 6bfb23e77d
1 changed files with 232 additions and 187 deletions
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85
src/sys/create.c
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@ -50,9 +50,14 @@ static NTSTATUS FspFsvolCreate(
NTSTATUS Result;
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(DeviceObject);
FSP_FSVRT_DEVICE_EXTENSION *FsvrtDeviceExtension =
FspFsvrtDeviceExtension(FsvolDeviceExtension->FsvrtDeviceObject);
PDEVICE_OBJECT FsvrtDeviceObject = FsvolDeviceExtension->FsvrtDeviceObject;
if (!FspDeviceRetain(FsvrtDeviceObject))
return STATUS_CANCELLED;
try
{
FSP_FSVRT_DEVICE_EXTENSION *FsvrtDeviceExtension =
FspFsvrtDeviceExtension(FsvrtDeviceObject);
PFILE_OBJECT FileObject = IrpSp->FileObject;
PFILE_OBJECT RelatedFileObject = FileObject->RelatedFileObject;
UNICODE_STRING FileName = FileObject->FileName;
@ -69,8 +74,10 @@ static NTSTATUS FspFsvolCreate(
PFILE_FULL_EA_INFORMATION EaBuffer = Irp->AssociatedIrp.SystemBuffer;
//ULONG EaLength = IrpSp->Parameters.Create.EaLength;
ULONG Flags = IrpSp->Flags;
KPROCESSOR_MODE RequestorMode = FlagOn(Flags, SL_FORCE_ACCESS_CHECK) ? UserMode : Irp->RequestorMode;
BOOLEAN HasTraversePrivilege = BooleanFlagOn(AccessState->Flags, TOKEN_HAS_TRAVERSE_PRIVILEGE);
KPROCESSOR_MODE RequestorMode =
FlagOn(Flags, SL_FORCE_ACCESS_CHECK) ? UserMode : Irp->RequestorMode;
BOOLEAN HasTraversePrivilege =
BooleanFlagOn(AccessState->Flags, TOKEN_HAS_TRAVERSE_PRIVILEGE);
BOOLEAN IsAbsoluteSecurityDescriptor = FALSE;
BOOLEAN IsSelfRelativeSecurityDescriptor = FALSE;
BOOLEAN HasTrailingBackslash = FALSE;
@ -79,19 +86,31 @@ static NTSTATUS FspFsvolCreate(
/* cannot open the volume object */
if (0 == RelatedFileObject && 0 == FileName.Length)
return STATUS_ACCESS_DENIED; /* need error code like POSIX EPERM (STATUS_NOT_SUPPORTED?) */
{
Result = STATUS_ACCESS_DENIED; /* need error code like POSIX EPERM (STATUS_NOT_SUPPORTED?) */
goto exit;
}
/* cannot open a paging file */
if (FlagOn(Flags, SL_OPEN_PAGING_FILE))
return STATUS_ACCESS_DENIED;
{
Result = STATUS_ACCESS_DENIED;
goto exit;
}
/* cannot open files by fileid */
if (FlagOn(CreateOptions, FILE_OPEN_BY_FILE_ID))
return STATUS_NOT_IMPLEMENTED;
{
Result = STATUS_NOT_IMPLEMENTED;
goto exit;
}
/* do we support EA? */
if (0 != EaBuffer && !FsvrtDeviceExtension->VolumeParams.EaSupported)
return STATUS_EAS_NOT_SUPPORTED;
{
Result = STATUS_EAS_NOT_SUPPORTED;
goto exit;
}
/* check security descriptor validity */
if (0 != SecurityDescriptor)
@ -101,7 +120,10 @@ static NTSTATUS FspFsvolCreate(
{
Result = RtlAbsoluteToSelfRelativeSD(SecurityDescriptor, 0, &SecurityDescriptorSize);
if (STATUS_BUFFER_TOO_SMALL != Result)
return STATUS_INVALID_PARAMETER;
{
Result = STATUS_INVALID_PARAMETER;
goto exit;
}
}
else
{
@ -109,7 +131,10 @@ static NTSTATUS FspFsvolCreate(
IsSelfRelativeSecurityDescriptor = RtlValidRelativeSecurityDescriptor(
SecurityDescriptor, SecurityDescriptorSize, 0);
if (!IsSelfRelativeSecurityDescriptor)
return STATUS_INVALID_PARAMETER;
{
Result = STATUS_INVALID_PARAMETER;
goto exit;
}
}
}
@ -123,7 +148,10 @@ static NTSTATUS FspFsvolCreate(
if (sizeof(WCHAR) * 2 <= FileName.Length &&
L'\\' == FileName.Buffer[1] && L'\\' == FileName.Buffer[0])
return STATUS_OBJECT_NAME_INVALID;
{
Result = STATUS_OBJECT_NAME_INVALID;
goto exit;
}
}
/* check for trailing backslash */
@ -134,7 +162,10 @@ static NTSTATUS FspFsvolCreate(
HasTrailingBackslash = TRUE;
if (sizeof(WCHAR) * 2 <= FileName.Length && L'\\' == FileName.Buffer[FileName.Length / 2 - 1])
return STATUS_OBJECT_NAME_INVALID;
{
Result = STATUS_OBJECT_NAME_INVALID;
goto exit;
}
}
/* is this a relative or absolute open? */
@ -142,7 +173,10 @@ static NTSTATUS FspFsvolCreate(
{
/* must be a relative path */
if (sizeof(WCHAR) <= FileName.Length && L'\\' == FileName.Buffer[0])
return STATUS_OBJECT_NAME_INVALID;
{
Result = STATUS_OBJECT_NAME_INVALID;
goto exit;
}
FSP_FILE_CONTEXT *RelatedFsContext = RelatedFileObject->FsContext;
ASSERT(0 != RelatedFsContext);
@ -160,7 +194,7 @@ static NTSTATUS FspFsvolCreate(
RelatedFsContext->FileName.Length + AppendBackslash * sizeof(WCHAR) + FileName.Length,
&FsContext);
if (!NT_SUCCESS(Result))
return Result;
goto exit;
Result = RtlAppendUnicodeStringToString(&FsContext->FileName, &RelatedFsContext->FileName);
ASSERT(NT_SUCCESS(Result));
@ -174,13 +208,16 @@ static NTSTATUS FspFsvolCreate(
{
/* must be an absolute path */
if (sizeof(WCHAR) <= FileName.Length && L'\\' != FileName.Buffer[0])
return STATUS_OBJECT_NAME_INVALID;
{
Result = STATUS_OBJECT_NAME_INVALID;
goto exit;
}
Result = FspFileContextCreate(
FileName.Length,
&FsContext);
if (!NT_SUCCESS(Result))
return Result;
goto exit;
}
Result = RtlAppendUnicodeStringToString(&FsContext->FileName, &FileName);
@ -195,7 +232,7 @@ static NTSTATUS FspFsvolCreate(
if (!NT_SUCCESS(Result))
{
FspFileContextDelete(FsContext);
return Result;
goto exit;
}
/* populate the Create request */
@ -226,7 +263,7 @@ static NTSTATUS FspFsvolCreate(
FspFileContextDelete(FsContext);
if (STATUS_BAD_DESCRIPTOR_FORMAT == Result || STATUS_BUFFER_TOO_SMALL == Result)
return STATUS_INVALID_PARAMETER; /* should not happen */
return Result;
goto exit;
}
}
else
@ -242,7 +279,7 @@ static NTSTATUS FspFsvolCreate(
if (!NT_SUCCESS(Result))
{
FspFileContextDelete(FsContext);
return Result;
goto exit;
}
/* send the kernel handle and change it into a process handle at prepare time */
@ -258,7 +295,15 @@ static NTSTATUS FspFsvolCreate(
/* this can only happen if the Ioq was stopped */
ASSERT(FspIoqStopped(&FsvrtDeviceExtension->Ioq));
FspFileContextDelete(FsContext);
return STATUS_CANCELLED;
Result = STATUS_CANCELLED;
goto exit;
}
exit:;
}
finally
{
FspDeviceRelease(FsvrtDeviceObject);
}
return STATUS_PENDING;