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 (con-
       sult 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 sock-
       addr 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, Copy-
       right (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.open-
       group.org/unix/online.html .



IEEE/The Open Group                                           2003                                               GETSOCKNAME(3P)