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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 dif-
       fer (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, Stan-
       dard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base  Specifica-
       tions  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 Stan-
       dard,  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)