92 lines
3.9 KiB
C
92 lines
3.9 KiB
C
/****************************************************************************
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* libs/libc/netdb/lib_gethostbynamer.c
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*
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* Copyright (C) 2015, 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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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#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: gethostbyname_r
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*
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* Description:
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* The gethostbyname_r() function returns a structure of type hostent for
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* the given host name. Here name is either a hostname, or an IPv4 address
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* in standard dot notation (as for inet_addr(3)), or an IPv6 address in
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* colon (and possibly dot) notation.
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*
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* If name is an IPv4 or IPv6 address, no lookup is performed and
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* gethostbyname_r() simply copies name into the h_name field
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* and its struct in_addr equivalent into the h_addr_list[0] field of the
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* returned hostent structure.
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*
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* gethostname_r() is *not* POSIX but is similar to a Glibc extension and
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* is used internally by NuttX to implement the POSIX gethostname().
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*
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* Input Parameters:
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* name - The name of the host to find.
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* host - Caller provided location to return the host data.
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* buf - Caller provided buffer to hold string data associated with the
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* host data.
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* buflen - The size of the caller-provided buffer
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* result - There host entry returned in the event of a success.
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* h_errnop - There h_errno value returned in the event of a failure.
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*
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* Returned Value:
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* Zero (OK) is returned on success, -1 (ERROR) is returned on a failure
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* with the returned h_errno value provided the reason for the failure.
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*
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****************************************************************************/
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int gethostbyname_r(FAR const char *name,
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FAR struct hostent *host, FAR char *buf,
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size_t buflen, FAR struct hostent **result,
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FAR int *h_errnop)
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{
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return gethostbyname2_r(name, AF_UNSPEC,
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host, buf, buflen, result, h_errnop);
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}
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#endif /* CONFIG_LIBC_NETDB */
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