43223124ec
Signed-off-by: Shoukui Zhang <zhangshoukui@xiaomi.com>
155 lines
5.2 KiB
C
155 lines
5.2 KiB
C
/****************************************************************************
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* net/socket/shutdown.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include <sys/socket.h>
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#include <nuttx/fs/fs.h>
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#include <nuttx/net/net.h>
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#include "socket/socket.h"
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: psock_shutdown
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*
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* Description:
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* The shutdown() function will cause all or part of a full-duplex
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* connection on the socket associated with the file descriptor socket to
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* be shut down.
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*
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* The shutdown() function disables subsequent send and/or receive
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* operations on a socket, depending on the value of the how argument.
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*
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* Input Parameters:
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* sockfd - Specifies the file descriptor of the socket.
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* how - Specifies the type of shutdown. The values are as follows:
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*
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* SHUT_RD - Disables further receive operations.
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* SHUT_WR - Disables further send operations.
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* SHUT_RDWR - Disables further send and receive operations.
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*
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* Returned Value:
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* On success, returns the number of characters sent. On any failure, a
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* negated errno value is returned. One of:
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*
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* EINVAL - The how argument is invalid.
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* ENOTCONN - The socket is not connected.
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* ENOTSOCK - The socket argument does not refer to a socket.
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* ENOBUFS - Insufficient resources were available in the system to
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* perform the operation.
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* EOPNOTSUPP - The operation is not supported for this socket's protocol
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*
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****************************************************************************/
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int psock_shutdown(FAR struct socket *psock, int how)
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{
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/* Verify that the psock corresponds to valid, allocated socket */
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if (psock == NULL || psock->s_conn == NULL)
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{
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return -EBADF;
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}
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/* Let the address family's shutdown() method handle the operation */
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if (psock->s_sockif && psock->s_sockif->si_shutdown)
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{
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return psock->s_sockif->si_shutdown(psock, how);
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}
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return -EOPNOTSUPP;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: shutdown
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*
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* Description:
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* The shutdown() function will cause all or part of a full-duplex
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* connection on the socket associated with the file descriptor socket to
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* be shut down.
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*
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* The shutdown() function disables subsequent send and/or receive
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* operations on a socket, depending on the value of the how argument.
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*
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* Input Parameters:
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* sockfd - Specifies the file descriptor of the socket.
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* how - Specifies the type of shutdown. The values are as follows:
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*
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* SHUT_RD - Disables further receive operations.
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* SHUT_WR - Disables further send operations.
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* SHUT_RDWR - Disables further send and receive operations.
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*
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* Returned Value:
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* Upon successful completion, shutdown() will return 0; otherwise, -1 will
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* be returned and errno set to indicate the error.
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*
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* EBADF - The socket argument is not a valid file descriptor.
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* EINVAL - The how argument is invalid.
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* ENOTCONN - The socket is not connected.
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* ENOTSOCK - The socket argument does not refer to a socket.
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* ENOBUFS - Insufficient resources were available in the system to
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* perform the operation.
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* EOPNOTSUPP - The operation is not supported for this socket's protocol
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*
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****************************************************************************/
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int shutdown(int sockfd, int how)
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{
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FAR struct socket *psock;
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FAR struct file *filep;
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int ret;
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/* Get the underlying socket structure */
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ret = sockfd_socket(sockfd, &filep, &psock);
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/* Then let psock_shutdown() do all of the work */
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if (ret == OK)
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{
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ret = psock_shutdown(psock, how);
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fs_putfilep(filep);
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}
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if (ret < 0)
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{
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set_errno(-ret);
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ret = ERROR;
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}
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return ret;
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}
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