huschi.net

GETSOCKNAME(3P)            POSIX Programmer's Manual           GETSOCKNAME(3P)

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
       getsockname - get the socket name
SYNOPSIS
       #include <sys/socket.h>
       int getsockname(int socket, struct sockaddr *restrict address,
              socklen_t *restrict address_len);

DESCRIPTION
       The getsockname() function shall retrieve the locally-bound name of the
       specified  socket, store this address in the sockaddr structure pointed
       to by the address argument, and store the length of this address in the
       object pointed to by the address_len argument.
       If  the  actual length of the address is greater than the length of the
       supplied sockaddr structure, the stored address shall be truncated.
       If the socket has not been bound to a local name, the value  stored  in
       the object pointed to by address is unspecified.
RETURN VALUE
       Upon  successful  completion, 0 shall be returned, the address argument
       shall point to the address of the socket, and the address_len  argument
       shall  point  to  the  length  of  the address.  Otherwise, -1 shall be
       returned and errno set to indicate the error.
ERRORS
       The getsockname() function shall fail if:
       EBADF  The socket argument is not a valid file descriptor.
       ENOTSOCK
              The socket argument does not refer to a socket.
       EOPNOTSUPP
              The operation is not supported for this socket's protocol.

       The getsockname() function may fail if:
       EINVAL The socket has been shut down.
       ENOBUFS
              Insufficient resources were available in the system to  complete
              the function.

       The following sections are informative.
EXAMPLES
       None.
APPLICATION USAGE
       None.
RATIONALE
       None.
FUTURE DIRECTIONS
       None.
SEE ALSO
       accept(),  bind(), getpeername(), socket(), the Base Definitions volume
       of IEEE Std 1003.1-2001, <sys/socket.h>
COPYRIGHT
       Portions of this text are reprinted and reproduced in  electronic  form
       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
       Specifications  Issue  6,  Copyright  (C) 2001-2003 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open  Group.  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.opengroup.org/unix/online.html .

IEEE/The Open Group                  2003                      GETSOCKNAME(3P)