I want to upload a file using a pure HTML form, i.e. No Visual force but instead of gettign the file data as a Blob I just get a reference to the file as:

/home/sfdc/salesforce/sfdc/jsp/form/form1433903752.tmp   is there any API call we can use to convert that into an blob or attachment

This is my HTML

 <form id="myForm1" action="fileTest" method="POST" enctype="multipart/form-data">
       <input type="hidden" name="MAX_FILE_SIZE" value="100000" />

        File: <input type="file" name="file" />
   <input type="submit" value="Submit" />

  </form>

This my apex

 public fileTest()
    {
        Map<String, String> m = System.currentPageReference().getParameters();
        for(string key : m.keySet())
        {
              System.debug('============= key ='+ key  + ':'+     System.currentPageReference().getParameters().get(key));
            
        }
       
    }

 
I get back the file name, file content type, but not the file binary data just a internal folder/file path such as /home/sfdc/salesforce/sfdc/jsp/form/form1433903752.tmp    is there any hooks I can use to covert that into a Blob?

Yes I do know I can use Visualforce to do this and save directly to an Attachment or Document. But I do not want to do this.