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sys: IRP_MJ_CREATE

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This commit is contained in:
Bill Zissimopoulos 2015-12-03 20:38:07 -08:00
parent b0066b81ac
commit b8d4cde102
1 changed files with 21 additions and 7 deletions
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28
src/sys/create.c
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@ -56,22 +56,22 @@ static NTSTATUS FspFsvolCreate(
PFILE_OBJECT FileObject = IrpSp->FileObject; PFILE_OBJECT FileObject = IrpSp->FileObject;
PFILE_OBJECT RelatedFileObject = FileObject->RelatedFileObject; PFILE_OBJECT RelatedFileObject = FileObject->RelatedFileObject;
UNICODE_STRING FileName = FileObject->FileName; UNICODE_STRING FileName = FileObject->FileName;
ULONG Flags = IrpSp->Flags;
KPROCESSOR_MODE RequestorMode = FlagOn(Flags, SL_FORCE_ACCESS_CHECK) ? UserMode : Irp->RequestorMode;
PACCESS_STATE AccessState = IrpSp->Parameters.Create.SecurityContext->AccessState; PACCESS_STATE AccessState = IrpSp->Parameters.Create.SecurityContext->AccessState;
ACCESS_MASK DesiredAccess = IrpSp->Parameters.Create.SecurityContext->DesiredAccess;
PSECURITY_DESCRIPTOR SecurityDescriptor = AccessState->SecurityDescriptor;
ULONG SecurityDescriptorSize = 0;
USHORT ShareAccess = IrpSp->Parameters.Create.ShareAccess;
ULONG CreateDisposition = (IrpSp->Parameters.Create.Options >> 24) & 0xff; ULONG CreateDisposition = (IrpSp->Parameters.Create.Options >> 24) & 0xff;
ULONG CreateOptions = IrpSp->Parameters.Create.Options & 0xffffff; ULONG CreateOptions = IrpSp->Parameters.Create.Options & 0xffffff;
USHORT FileAttributes = IrpSp->Parameters.Create.FileAttributes; USHORT FileAttributes = IrpSp->Parameters.Create.FileAttributes;
PSECURITY_DESCRIPTOR SecurityDescriptor = AccessState->SecurityDescriptor;
ULONG SecurityDescriptorSize = 0;
LARGE_INTEGER AllocationSize = Irp->Overlay.AllocationSize; LARGE_INTEGER AllocationSize = Irp->Overlay.AllocationSize;
ACCESS_MASK DesiredAccess = IrpSp->Parameters.Create.SecurityContext->DesiredAccess;
USHORT ShareAccess = IrpSp->Parameters.Create.ShareAccess;
PFILE_FULL_EA_INFORMATION EaBuffer = Irp->AssociatedIrp.SystemBuffer; PFILE_FULL_EA_INFORMATION EaBuffer = Irp->AssociatedIrp.SystemBuffer;
//ULONG EaLength = IrpSp->Parameters.Create.EaLength; //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);
BOOLEAN IsAbsoluteSecurityDescriptor = FALSE; BOOLEAN IsAbsoluteSecurityDescriptor = FALSE;
BOOLEAN IsSelfRelativeSecurityDescriptor = FALSE; BOOLEAN IsSelfRelativeSecurityDescriptor = FALSE;
BOOLEAN HasTraversePrivilege = BooleanFlagOn(AccessState->Flags, TOKEN_HAS_TRAVERSE_PRIVILEGE);
BOOLEAN HasTrailingBackslash = FALSE; BOOLEAN HasTrailingBackslash = FALSE;
FSP_FILE_CONTEXT *FsContext = 0; FSP_FILE_CONTEXT *FsContext = 0;
FSP_FSCTL_TRANSACT_REQ *Request; FSP_FSCTL_TRANSACT_REQ *Request;
@ -215,6 +215,20 @@ static NTSTATUS FspFsvolCreate(
Request->Req.Create.HasTraversePrivilege = HasTraversePrivilege; Request->Req.Create.HasTraversePrivilege = HasTraversePrivilege;
Request->Req.Create.OpenTargetDirectory = BooleanFlagOn(Flags, SL_OPEN_TARGET_DIRECTORY); Request->Req.Create.OpenTargetDirectory = BooleanFlagOn(Flags, SL_OPEN_TARGET_DIRECTORY);
Request->Req.Create.CaseSensitive = BooleanFlagOn(Flags, SL_CASE_SENSITIVE); Request->Req.Create.CaseSensitive = BooleanFlagOn(Flags, SL_CASE_SENSITIVE);
if (IsAbsoluteSecurityDescriptor)
{
Result = RtlAbsoluteToSelfRelativeSD(SecurityDescriptor, 0, &SecurityDescriptorSize);
if (!NT_SUCCESS(Result))
{
FspFileContextDelete(FsContext);
if (STATUS_BAD_DESCRIPTOR_FORMAT == Result || STATUS_BUFFER_TOO_SMALL == Result)
return STATUS_INVALID_PARAMETER; /* should not happen */
return Result;
}
}
else
RtlCopyMemory(Request->Buffer + Request->Req.Create.SecurityDescriptor,
SecurityDescriptor, SecurityDescriptorSize);
/* /*
* Post the IRP to our Ioq; we do this here instead of at FSP_LEAVE_MJ time, * Post the IRP to our Ioq; we do this here instead of at FSP_LEAVE_MJ time,