PKON

Section: System Calls (2)
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NAME

pkon, pkoff - establish packet protocol  

SYNOPSIS

pkon(fd, size)

pkoff(fd)  

DESCRIPTION

Pkon establishes packet protocol (see pk(4)) on the open character special file whose file descriptor is fd. Size is a desired packet size, a power of 2 in the range 32<size<4096. The size is negotiated with a remote packet driver, and a possibly smaller actual packet size is returned.

An asynchronous line used for packet communication should be in raw mode; see tty(4).

Pkoff turns off the packet driver on the channel whose file descriptor is fd.  

SEE ALSO

pk(4), pkopen(3), tty(4), signal(2)  

DIAGNOSTICS

Pkon returns -1 if fd does not describe an open file, or if packet communication cannot be established.

Pkoff returns -1 for an unknown file descriptor.

Writing on a packet driver link that has been shut down by close or pkoff at the other end raises signal SIGPIPE in the writing process.


 

Index

NAME
SYNOPSIS
DESCRIPTION
SEE ALSO
DIAGNOSTICS

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Time: 10:17:37 GMT, December 28, 2024