109 lines
3.5 KiB
C
109 lines
3.5 KiB
C
/****************************************************************************
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* net/inet/ipv4_getsockopt.c
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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 <sys/types.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/net/net.h>
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#include <netinet/in.h>
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#include "netfilter/iptables.h"
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#ifdef CONFIG_NET_IPv4
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: ipv4_getsockopt
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*
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* Description:
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* ipv4_getsockopt() retrieve the value for the option specified by the
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* 'option' argument for the socket specified by the 'psock' argument. If
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* the size of the option value is greater than 'value_len', the value
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* stored in the object pointed to by the 'value' argument will be silently
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* truncated. Otherwise, the length pointed to by the 'value_len' argument
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* will be modified to indicate the actual length of the 'value'.
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*
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* See <netinet/in.h> for the a complete list of values of IPv4 protocol
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* socket options.
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*
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* Input Parameters:
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* psock Socket structure of the socket to query
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* option identifies the option to get
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* value Points to the argument value
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* value_len The length of the argument value
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*
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* Returned Value:
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* Returns zero (OK) on success. On failure, it returns a negated errno
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* value to indicate the nature of the error. See psock_getsockopt() for
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* the list of possible error values.
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*
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****************************************************************************/
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int ipv4_getsockopt(FAR struct socket *psock, int option,
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FAR void *value, FAR socklen_t *value_len)
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{
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int ret;
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ninfo("option: %d\n", option);
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net_lock();
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switch (option)
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{
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#ifdef CONFIG_NET_IPTABLES
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case IPT_SO_GET_INFO:
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case IPT_SO_GET_ENTRIES:
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ret = ipt_getsockopt(psock, option, value, value_len);
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break;
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#endif
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case IP_TOS:
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{
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FAR struct socket_conn_s *conn =
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(FAR struct socket_conn_s *)psock->s_conn;
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*(FAR uint8_t *)value = conn->s_tos;
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*value_len = 1;
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ret = OK;
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}
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break;
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default:
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nerr("ERROR: Unrecognized IPv4 option: %d\n", option);
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ret = -ENOPROTOOPT;
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break;
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}
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net_unlock();
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return ret;
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}
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#endif /* CONFIG_NET_IPv4 */
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