TIOCSETN, TIOCSETP

QNX SDP8.0Devctl and Ioctl CommandsDeveloper

Set a terminal's parameters

Synopsis:

#include <sys/ioctl.h>

#define TIOCSETP        _IOW('t', 9, struct sgttyb)
#define TIOCSETN        _IOW('t',10, struct sgttyb)

Arguments to ioctl():

Argument Value
fd A file descriptor that you obtained by opening the device
request TIOCSETN or TIOCSETP
Additional argument A pointer to a struct sgttyb

Description:

These commands set a terminal's parameters. TIOCSETP flushes the tty; TIOCSETN doesn't.

Input:

A filled-in struct sgttyb (defined in <sgtty.h>): 

struct sgttyb {
    char sg_ispeed; /* input speed */
    char sg_ospeed; /* output speed */
    char sg_erase;  /* erase character */
    char sg_kill;   /* kill character */
    int  sg_flags;  /* mode flags */
};

The mode flags, which are defined in <sys/termio.h> include the following:

  • TANDEM — send stopc when the output queue is full.
  • CBREAK — half-cooked mode.
  • LCASE — simulate lower case.
  • CRMOD — map \r to \r\n on output (ONLCR & ICRNL.
  • RAW — no I/O processing.
  • ODDP — get/send odd parity.
  • EVENP — get/send even parity.
  • ANYP — get any parity/send none.

as well as the following, which is defined in <termios.h>:

  • ECHO — enable echo.

Output:

None.

See also:

TIOCGETP

ioctl() in the QNX OS C Library Reference

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