75 lines
2.8 KiB
C
75 lines
2.8 KiB
C
/****************************************************************************
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* libs/libc/netdb/lib_gethostbyaddr.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 <netdb.h>
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#include "netdb/lib_netdb.h"
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#ifdef CONFIG_LIBC_NETDB
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: gethostbyaddr
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*
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* Description:
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* The gethostbyaddr() function returns a structure of type hostent for
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* the given host address addr of length len and address type type. Valid
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* address types are AF_INET and AF_INET6. The host address argument is a
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* pointer to a struct of a type depending on the address type, for example
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* a struct in_addr * for address type AF_INET.
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*
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* Input Parameters:
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* addr - The address of the host to find.
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* len - The length of the address
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* type - The type of the address
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*
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* Returned Value:
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* Upon successful completion, this function will return a pointer to a
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* hostent structure if the requested entry was found, and a null pointer
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* if the end of the database was reached or the requested entry was not
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* found.
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*
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* Upon unsuccessful completion, gethostbyaddr() will set h_errno to
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* indicate the error
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*
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****************************************************************************/
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FAR struct hostent *gethostbyaddr(FAR const void *addr,
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socklen_t len, int type)
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{
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FAR struct hostent *res;
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int ret;
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ret = gethostbyaddr_r(addr, len, type, &g_hostent, g_hostbuffer,
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CONFIG_NETDB_BUFSIZE, &res, &h_errno);
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return ret == 0 ? res : NULL;
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}
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#endif /* CONFIG_LIBC_NETDB */
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