generic_close 33 arch/um/drivers/chan_user.h extern void generic_close(int fd, void *unused); generic_close 44 arch/um/drivers/null.c .close = generic_close, generic_close 145 arch/um/drivers/pty.c .close = generic_close, generic_close 158 arch/um/drivers/pty.c .close = generic_close, generic_close 74 arch/um/drivers/tty.c .close = generic_close,