sockio(7)              DEVICES AND MODULES              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 set-
     sockopt 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  inter-
     face  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 sub-
                         sequently receive SIGIO or  SIGURG  sig-
                         nals  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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