sockio(7)                        UNIX System V                        sockio(7)


NAME
      sockio - ioctls that operate directly on sockets

SYNOPSIS
      #include <sys/sockio.h>

DESCRIPTION
      The IOCTL's 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
                          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 ALSO
      ioctl(2), getsockopt(2), filio(4)



















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