ioctl
ioctl — performs control functions on a file descriptor.
Syntax
ioctl (fd, request, value)
Arguments
- fd
- A file
descriptor as returned from fd_open.
- request
- One of the functions listed below in
Description.
- value
- A
number that supplies additional information needed by the
request function.
Returns
The return value of the
request function.
Description
This function performs an
ioctl call (C library
ioctl subroutine) for the given
fd file descriptor and
request. The Gamma
ioctl function currently only supports
requests that take numeric arguments,
ie. value must be a number. You may make
operating-system specific ioctl calls by
giving a numeric value for the request
argument.
The currently supported
requests are:
| TCSBRK | TCXONC | TCFLSH | TIOCHPCL | TIOCEXCL | TIOXNXCL |
| TIOCFLUSH | TIOCDRAIN | TIOCSCTTY | TIOCMGET | TIOCMBIC | TIOCMBIS |
| TIOCMSET | TIOCSTART | TIOCSTOP | TIOCNOTTY | TIOCOUTQ | TIOCSPGRP |
| TIOCGPGRP | TIOCCDIR | TIOCSDIR | TIOCCBRK | TIOCSBRK | TIOCLGET |
| TIOCLSET | TIOCSETPGRP | TIOCGETPGRP | FIOCLEX | FIONCLEX | FIOGETOWN |
| FIOSETOWN | FIOASYNC | FIONBIO | FIONReAd | SIOCSHIWAT | SIOCGHIWAT |
| SIOCSLOWAT | SIOCGLOWAT | SIOCATMARK | SIOCSPGRP | SIOCGPGRP | |
