sockio(7i) [sunos man page]

sockio(7I)							  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 get-
       sockopt(3SOCKET)) 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. The argument 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.

       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(3SOCKET)

SunOS 5.10							    8 Nov 1996								sockio(7I)

FSETOWN(9)						   BSD Kernel Developer's Manual						FSETOWN(9)

NAME

     fsetown, fgetown, fownsignal -- file descriptor owner handling functions

SYNOPSIS

     #include <sys/file.h>

     int
     fsetown(struct lwp *l, pid_t *pgid, int cmd, const void *data);

     int
     fgetown(struct lwp *l, pid_t pgid, int cmd, void *data);

     void
     fownsignal(pid_t pgid, int signo, int code, int band, void *fdescdata);

DESCRIPTION

     These functions handle file descriptor owner related ioctls and related signal delivery.  Device drivers and other parts of the kernel call
     these functions from ioctl entry functions or I/O notification functions.

     fsetown() sets the owner of file.	cmd is an ioctl command, one of SIOCSPGRP, FIOSETOWN, and TIOCSPGRP.  data is interpreted as a pointer to
     a signed integer, the integer being the ID of the owner.  The cmd determines how exactly data should be interpreted.  If cmd is TIOCSPGRP,
     the ID needs to be positive and is interpreted as process group ID.  For SIOCSPGRP and FIOSETOWN, the passed ID is the process ID if posi-
     tive, or the process group ID if negative.

     fgetown() returns the current owner of the file.  cmd is an ioctl command, one of SIOCGPGRP, FIOGETOWN, and TIOCGPGRP.  data is interpreted
     as a pointer to a signed integer, and the value is set according to the passed cmd.  For TIOCGPGRP, the returned data value is positive
     process group ID if the owner is the process group, or negative process ID if the owner is a process.  For other ioctls, the returned value
     is the positive process ID if the owner is a process, or the negative process group ID if the owner is a process group.

     fownsignal() schedules the signo signal to be sent to the current file descriptor owner.  The signals typically used with this function are
     SIGIO and SIGURG.	The code and band arguments are sent along with the signal as additional signal specific information if SA_SIGINFO is
     activated.  If the information is not available from the context of the fownsignal() call, these should be passed as zero.  fdescdata is used
     to lookup the file descriptor for SA_SIGINFO signals.  If it is specified, the file descriptor number is sent along with the signal as addi-
     tional signal specific information.  If file descriptor data pointer is not available in the context of the fownsignal() call, NULL should be
     used instead.

     Note that a fcntl(2) F_SETOWN request is translated by the kernel to a FIOSETOWN ioctl, and F_GETOWN is translated to FIOGETOWN.  This is
     done transparently by generic code, before the device- or subsystem-specific ioctl entry function is called.

SEE ALSO

     fcntl(2), siginfo(2), signal(7), ioctl(9), signal(9)

HISTORY

     These kernel functions appeared in NetBSD 2.0.

BSD
								 December 20, 2005							       BSD