static int pdc_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { struct async_struct *info = (struct async_struct *) tty->driver_data; if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) && (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { if (tty->flags & (1 << TTY_IO_ERROR)) return -EIO; } switch (cmd) { case TIOCMGET: return get_modem_info(info, (unsigned int *) arg); case TIOCMBIS: case TIOCMBIC: case TIOCMSET: return 0; case TIOCGSERIAL: return get_serial_info(info, (struct serial_struct *) arg); case TIOCSSERIAL: return 0; case TIOCSERCONFIG: return 0; case TIOCSERGETLSR: /* Get line status register */ return get_lsr_info(info, (unsigned int *) arg); case TIOCSERGSTRUCT: if (copy_to_user((struct async_struct *) arg, info, sizeof (struct async_struct))) return -EFAULT; return 0; case TIOCMIWAIT: return 0; case TIOCGICOUNT: return 0; case TIOCSERGWILD: case TIOCSERSWILD: /* "setserial -W" is called in Debian boot */ printk("TIOCSER?WILD ioctl obsolete, ignored.\n"); return 0; default: return -ENOIOCTLCMD; } return 0; }
static int rs_ioctl(struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg) { int error; struct async_struct * info = (struct async_struct *)tty->driver_data; int retval; if (serial_paranoia_check(info, tty->device, "rs_ioctl")) return -ENODEV; if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGWILD) && (cmd != TIOCSERSWILD) && (cmd != TIOCSERGSTRUCT) && (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { if (tty->flags & (1 << TTY_IO_ERROR)) return -EIO; } switch (cmd) { case TCSBRK: /* SVID version: non-zero arg --> no break */ retval = tty_check_change(tty); if (retval) return retval; tty_wait_until_sent(tty, 0); if (!arg) send_break(info, HZ/4); /* 1/4 second */ return 0; case TCSBRKP: /* support for POSIX tcsendbreak() */ retval = tty_check_change(tty); if (retval) return retval; tty_wait_until_sent(tty, 0); send_break(info, arg ? arg*(HZ/10) : HZ/4); return 0; case TIOCGSOFTCAR: error = verify_area(VERIFY_WRITE, (void *) arg,sizeof(long)); if (error) return error; put_fs_long(C_CLOCAL(tty) ? 1 : 0, (unsigned long *) arg); return 0; case TIOCSSOFTCAR: error = verify_area(VERIFY_READ, (void *) arg, sizeof(long)); if (error) return error; arg = get_fs_long((unsigned long *) arg); tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0)); return 0; case TIOCMGET: error = verify_area(VERIFY_WRITE, (void *) arg, sizeof(unsigned int)); if (error) return error; return get_modem_info(info, (unsigned int *) arg); case TIOCMBIS: case TIOCMBIC: case TIOCMSET: return set_modem_info(info, cmd, (unsigned int *) arg); default: return -ENOIOCTLCMD; } return 0; }