getsockname — get socket name
#include <sys/socket.h>
int
getsockname( |
int sockfd, |
| struct sockaddr *addr, | |
socklen_t *addrlen); |
getsockname() returns the
current address to which the socket sockfd is bound, in the buffer
pointed to by addr.
The addrlen argument
should be initialized to indicate the amount of space (in
bytes) pointed to by addr. On return it contains the
actual size of the socket address.
The returned address is truncated if the buffer provided
is too small; in this case, addrlen will return a value
greater than was supplied to the call.
On success, zero is returned. On error, −1 is
returned, and errno is set
appropriately.
The argument sockfd is not a valid
file descriptor.
The addr
argument points to memory not in a valid part of the
process address space.
addrlen is
invalid (e.g., is negative).
Insufficient resources were available in the system to perform the operation.
The file descriptor sockfd does not refer to
a socket.
The third argument of getsockname() is in reality an int * (and this is what 4.x BSD
and libc4 and libc5 have). Some POSIX confusion resulted in
the present socklen_t, also used by
glibc. See also accept(2).
This page is part of release 4.07 of the Linux man-pages project. A
description of the project, information about reporting bugs,
and the latest version of this page, can be found at
https://www.kernel.org/doc/man−pages/.
|
Copyright (c) 1983, 1991 The Regents of the University of California. All rights reserved. %%%LICENSE_START(BSD_4_CLAUSE_UCB) Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. All advertising materials mentioning features or use of this software must display the following acknowledgement: This product includes software developed by the University of California, Berkeley and its contributors. 4. Neither the name of the University nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. %%%LICENSE_END (#)getsockname.2 6.4 (Berkeley) 3/10/91 Modified Sat Jul 24 16:30:29 1993 by Rik Faith <faithcs.unc.edu> Modified Tue Oct 22 00:22:35 EDT 1996 by Eric S. Raymond <esrthyrsus.com> Modified Sun Mar 28 21:26:46 1999 by Andries Brouwer <aebcwi.nl> |