take free disk space (and user quota) into account for max upload size

files/index.php

@@ -89,6 +89,10 @@ $upload_max_filesize = OC_Helper::computerFileSize(ini_get('upload_max_filesize'
 $post_max_size = OC_Helper::computerFileSize(ini_get('post_max_size'));
 $maxUploadFilesize = min($upload_max_filesize, $post_max_size);
 
+$freeSpace=OC_Filesystem::free_space('/');
+$freeSpace=max($freeSpace,0);
+$maxUploadFilesize = min($maxUploadFilesize ,$freeSpace);
+
 $tmpl = new OC_Template( "files", "index", "user" );
 $tmpl->assign( "fileList", $list->fetchPage() );
 $tmpl->assign( "breadcrumb", $breadcrumbNav->fetchPage() );