123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174 |
- /****************************************************************************
- * net/socket/getsockname.c
- *
- * Copyright (C) 2011-2012, 2017 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * 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. Neither the name NuttX 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 COPYRIGHT HOLDERS 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
- * COPYRIGHT OWNER 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.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <sys/types.h>
- #include <sys/socket.h>
- #include <string.h>
- #include <errno.h>
- #include <assert.h>
- #include <nuttx/net/net.h>
- #include "socket/socket.h"
- #ifdef CONFIG_NET
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: psock_getsockname
- *
- * Description:
- * The psock_getsockname() function retrieves the locally-bound name of the
- * specified socket, stores this address in the sockaddr structure pointed
- * to by the 'addr' argument, and stores the length of this address in the
- * object pointed to by the 'addrlen' argument.
- *
- * If the actual length of the address is greater than the length of the
- * supplied sockaddr structure, the stored address will 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.
- *
- * Parameters:
- * psock Socket structure of socket to operate on
- * addr sockaddr structure to receive data [out]
- * addrlen Length of sockaddr structure [in/out]
- *
- * Returned Value:
- * On success, 0 is returned, the 'addr' argument points to the address
- * of the socket, and the 'addrlen' argument points to the length of the
- * address. Otherwise, -1 is returned and errno is set to indicate the error.
- * Possible errno values that may be returned include:
- *
- * 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.
- * EINVAL - The socket has been shut down.
- * ENOBUFS - Insufficient resources were available in the system to
- * complete the function.
- *
- ****************************************************************************/
- int psock_getsockname(FAR struct socket *psock, FAR struct sockaddr *addr, FAR socklen_t *addrlen)
- {
- /* Verify that the psock corresponds to valid, allocated socket */
- if (psock == NULL || psock->s_crefs <= 0)
- {
- return -EBADF;
- }
- /* Some sanity checking... Shouldn't need this on a buckled up embedded
- * system (?)
- */
- #ifdef CONFIG_DEBUG_FEATURES
- if (addr == NULL || addrlen <= 0)
- {
- return -EINVAL;
- }
- #endif
- /* Let the address family's send() method handle the operation */
- DEBUGASSERT(psock->s_sockif != NULL &&
- psock->s_sockif->si_getsockname != NULL);
- return psock->s_sockif->si_getsockname(psock, addr, addrlen);
- }
- /****************************************************************************
- * Name: getsockname
- *
- * Description:
- * The getsockname() function retrieves the locally-bound name of the
- * specified socket, stores this address in the sockaddr structure pointed
- * to by the 'addr' argument, and stores the length of this address in the
- * object pointed to by the 'addrlen' argument.
- *
- * If the actual length of the address is greater than the length of the
- * supplied sockaddr structure, the stored address will 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.
- *
- * Parameters:
- * sockfd Socket descriptor of socket [in]
- * addr sockaddr structure to receive data [out]
- * addrlen Length of sockaddr structure [in/out]
- *
- * Returned Value:
- * On success, 0 is returned, the 'addr' argument points to the address
- * of the socket, and the 'addrlen' argument points to the length of the
- * address. Otherwise, -1 is returned and errno is set to indicate the error.
- * Possible errno values that may be returned include:
- *
- * 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.
- * EINVAL - The socket has been shut down.
- * ENOBUFS - Insufficient resources were available in the system to
- * complete the function.
- *
- ****************************************************************************/
- int getsockname(int sockfd, FAR struct sockaddr *addr, FAR socklen_t *addrlen)
- {
- FAR struct socket *psock = sockfd_socket(sockfd);
- int ret;
- /* Let psock_getsockname() do all of the work */
- ret = psock_getsockname(psock, addr, addrlen);
- if (ret < 0)
- {
- set_errno(-ret);
- return ERROR;
- }
- return OK;
- }
- #endif /* CONFIG_NET */
|