Technical data

SunOS 5.5 Ioctl Requests sockio(7I)

NAME sockio − ioctls that operate directly on sockets

SYNOPSIS #include <sys/sockio.h>

DESCRIPTION The IOCTLs listed in this manual page apply directly to sockets, independent of any

underlying protocol. The setsockopt() call (see getsockopt(3N)) is the primary method

for operating on sockets, rather than on the underlying protocol or network interface.

ioctls for a speciﬁc 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.

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 mes-

sage. 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.