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 .