sockio(7)                                                         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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