linux man page for getsockname

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

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  argu-
       ment 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 Technol-
       ogy -- 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(P)