of_read
err = os_open_file("/dev/random", of_read(OPENFLAGS()), 0);
fd = os_open_file(ubd_dev->file, of_read(OPENFLAGS()), 0);
ffd = os_open_file(filename, of_read(OPENFLAGS()), 0);
return of_read(of_write(flags));
fd = os_open_file(filename, of_read(OPENFLAGS()), 0);
*mode_out = of_read(*mode_out);
.read = of_read,