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An interface to the ioctl(2) system call.
ioctl(2) provides an interface to the operating system terminal drivers (or more commonly these days to ptys (pseudo-terminals)). ioctl is very low-level - most aspects of the terminal can be controlled with the higher-level termios(4), available in Chicken as the even higher-level stty egg.
- (ioctl-winsize [<port-or-fileno>])
Returns a list of the form (<num-rows> <num-columns>) for the given port or file descriptor, defaulting to current-output-port.
- (ioctl <port-or-fileno> <request> [<args> ...])
Makes the given ioctl request with any arguments provided. The following requests are available:
- TIOCSETD int *ldisc change the line discipline:
- TTYDISC termios interactive line discipline
- TABLDISC tablet line discipline
- SLIPDISC serial IP line discipline
- PPPDISC PPP line discipline
- TIOCGETD int *ldisc return the current line discipline
- TIOCSBRK set the terminal into BREAK condition
- TIOCCBRK clear the terminal BREAK condition
- TIOCSDTR assert data terminal ready
- TIOCCDTR clear data terminal ready
- TIOCGPGRP int *tpgrp return the terminal's process group
- TIOCSPGRP int *tpgrp associate the terminal's process group
- TIOCGETA struct termios *term get the terminal's termios attributes
- TIOCSETA struct termios *term set the terminal's termios attributes
- TIOCSETAW struct termios *term set the termios attrs after any output completes
- TIOCSETAF struct termios *term after any output completes, clear input and set termios attrs
- TIOCOUTQ int *num current number of characters in the output queue
- TIOCSTI char *cp manually send a character to the terminal
- TIOCSTOP stop output (like typing ^S)
- TIOCSTART start output (like typing ^Q)
- TIOCSCTTY make this the controlling terminal for the process
- TIOCDRAIN wait until all output is drained
- TIOCEXCL set exclusive use on the terminal
- TIOCNXCL clear exclusive use of the terminal
- TIOCFLUSH int *what clear input/output if `what' has FREAD/FWRITE set
- TIOCGWINSZ struct winsize *ws get the winsize information
- TIOCSWINSZ struct winsize *ws set the winsize information
- TIOCCONS int *on redirect kernel console messages
- TIOCMSET int *state set the modem state bit flags according to the following:
- TIOCM_LE Line Enable
- TIOCM_DTR Data Terminal Ready
- TIOCM_RTS Request To Send
- TIOCM_ST Secondary Transmit
- TIOCM_SR Secondary Receive
- TIOCM_CTS Clear To Send
- TIOCM_CAR Carrier Detect
- TIOCM_CD Carrier Detect (synonym)
- TIOCM_RNG Ring Indication
- TIOCM_RI Ring Indication (synonym)
- TIOCM_DSR Data Set Ready
- TIOCMGET int *state get the modem state bit flags
- TIOCMBIS int *state add modem state bit flags, OR-ing in the new states
- TIOCMBIC int *state clear modem state bit flags
The struct winsize *ws arguments use the winsize record:
make-winsize free-winsize winsize-row winsize-col winsize-row-set! winsize-col-set!
The struct termios *term arguments use the term-attrs record from the stty egg.
The integer pointer arguments can be handled with pointers from the lolevel extension.
- Initial release