W_OK             1262 file.c             if (eaccess(StringValueCStr(fname), W_OK) < 0) return Qfalse;
W_OK             1279 file.c             if (access(StringValueCStr(fname), W_OK) < 0) return Qfalse;
W_OK             4430 file.c         	    && !access(p0, W_OK)) {