K 10 svn:author V 6 daichi K 8 svn:date V 27 2008-11-25T03:49:41.279320Z K 7 svn:log V 181 Simplify mode_t check treatment (suggested by trasz). By semantical view, trasz's code is better than prior one. Submitted by: trasz Reviewed by: Masanori OZAWA END