SOCKIO(7I)SOCKIO(7I)NAMEsockio - ioctls that operate directly on sockets
SYNOPSIS
#include <sys/sockio.h>
DESCRIPTION
The ioctls listed in this manual page apply directly to sockets, inde‐
pendent of any underlying protocol. The setsockopt() call (see getsock‐
opt(3SOCKET)) is the primary method for operating on sockets, rather
than on the underlying protocol or network interface. ioctls for a spe‐
cific network interface or protocol are documented in the manual page
for that interface or protocol.
SIOCSPGRP
The argument is a pointer to an int. Set the process-
group ID that will subsequently receive SIGIO or SIGURG
signals for the socket referred to by the descriptor
passed to ioctl to the value of that int. The argument
must be either positive (in which case it must be a
process ID) or negative (in which case it must be a
process group).
SIOCGPGRP
The argument is a pointer to an int. Set the value of
that int to the process-group ID that is receiving SIGIO
or SIGURG signals for the socket referred to by the
descriptor passed to ioctl.
SIOCCATMARK
The argument is a pointer to an int. Set the value of
that int to 1 if the read pointer for the socket
referred to by the descriptor passed to ioctl points to
a mark in the data stream for an out-of-band message.
Set the value of that int to 0 if the read pointer for
the socket referred to by the descriptor passed to ioctl
does not point to a mark in the data stream for an out-
of-band message.
SEE ALSOioctl(2), getsockopt(3SOCKET)
Nov 8, 1996 SOCKIO(7I)
