rb_sysopen       5595 io.c               fptr->fd = rb_sysopen(fptr->pathv, oflags, perm);
rb_sysopen       6433 io.c               fd = rb_sysopen(fname, oflags, perm);
rb_sysopen       6785 io.c                   fptr->fd = rb_sysopen(fptr->pathv, oflags, 0666);
rb_sysopen       6817 io.c           	int tmpfd = rb_sysopen(fptr->pathv, oflags, 0666);
rb_sysopen       7969 io.c           		int fr = rb_sysopen(filename, O_RDONLY, 0);
rb_sysopen       7996 io.c           			fr = rb_sysopen(str, O_RDONLY, 0);
rb_sysopen       8018 io.c           		    fw = rb_sysopen(filename, O_WRONLY|O_CREAT|O_TRUNC, 0666);