sys_un.h(feed) - phpMan

sys_un.h(0P)               POSIX Programmer's Manual              sys_un.h(0P)
PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the  corresponding
       Linux  manual page for details of Linux behavior), or the interface may
       not be implemented on Linux.
NAME
       sys/un.h -- definitions for UNIX domain sockets
SYNOPSIS
       #include <sys/un.h>
DESCRIPTION
       The <sys/un.h> header shall define  the  sockaddr_un  structure,  which
       shall include at least the following members:
           sa_family_t  sun_family  Address family.
           char         sun_path[]  Socket pathname.
       The  sockaddr_un  structure  is used to store addresses for UNIX domain
       sockets.  Pointers to this type shall be cast by applications to struct
       sockaddr * for use with socket functions.
       The <sys/un.h> header shall define the sa_family_t type as described in
       <sys/socket.h>.
       The following sections are informative.
APPLICATION USAGE
       The size of sun_path has intentionally been  left  undefined.  This  is
       because different implementations use different sizes. For example, 4.3
       BSD uses a size of 108, and 4.4 BSD uses a  size  of  104.  Since  most
       implementations  originate  from BSD versions, the size is typically in
       the range 92 to 108.
       Applications should not assume a  particular  length  for  sun_path  or
       assume that it can hold {_POSIX_PATH_MAX} bytes (256).
RATIONALE
       None.
FUTURE DIRECTIONS
       None.
SEE ALSO
       <sys_socket.h>
       The System Interfaces volume of POSIX.1-2008, bind(), socket(), socket-
       pair()
COPYRIGHT
       Portions of this text are reprinted and reproduced in  electronic  form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri-
       cal and Electronics Engineers,  Inc  and  The  Open  Group.   (This  is
       POSIX.1-2008  with  the  2013  Technical Corrigendum 1 applied.) In the
       event of any discrepancy between this version and the original IEEE and
       The  Open Group Standard, the original IEEE and The Open Group Standard
       is the referee document. The original Standard can be  obtained  online
       at http://www.unix.org/online.html .
       Any  typographical  or  formatting  errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files  to  man page format. To report such errors, see https://www.ker-
       nel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group                  2013                         sys_un.h(0P)