Ioctl Requests                                         sockio(7I)



NAME
     sockio - ioctls that operate directly on sockets

SYNOPSIS
     #include 


DESCRIPTION
     The ioctls listed in this  manual  page  apply  directly  to
     sockets,  independent  of  any underlying protocol. The set-
     sockopt() call  (see  getsockopt(3SOCKET))  is  the  primary
     method for operating on sockets, rather than on the underly-
     ing 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. The  argu-
                    ment  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.


     SIOCATMARK    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(3SOCKET)









SunOS 5.11           Last change: 8 Nov 1996                    1