| /**************************************************************************** |
| * libs/libc/netdb/lib_gethostbyname2r.c |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. The |
| * ASF licenses this file to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the |
| * License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations |
| * under the License. |
| * |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <nuttx/config.h> |
| |
| #include <netdb.h> |
| |
| #include "netdb/lib_netdb.h" |
| |
| #ifdef CONFIG_LIBC_NETDB |
| |
| /**************************************************************************** |
| * Public Functions |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Name: gethostbyname2_r |
| * |
| * Description: |
| * The gethostbyname2_r() function returns a structure of type hostent for |
| * the given host name. Here name is either a hostname, or an IPv4 address |
| * in standard dot notation (as for inet_addr(3)), or an IPv6 address in |
| * colon (and possibly dot) notation. |
| * |
| * If name is an IPv4 or IPv6 address, no lookup is performed and |
| * gethostbyname2_r() simply copies name into the h_name field |
| * and its struct in_addr equivalent into the h_addr_list[0] field of the |
| * returned hostent structure. |
| * |
| * gethostname2_r() is *not* POSIX but is similar to a Glibc extension and |
| * is used internally by NuttX to implement the POSIX gethostname(). |
| * |
| * Input Parameters: |
| * name - The name of the host to find. |
| * type - The type of the address to find. |
| * host - Caller provided location to return the host data. |
| * buf - Caller provided buffer to hold string data associated with the |
| * host data. |
| * buflen - The size of the caller-provided buffer |
| * result - There host entry returned in the event of a success. |
| * h_errnop - There h_errno value returned in the event of a failure. |
| * |
| * Returned Value: |
| * Zero (OK) is returned on success, -1 (ERROR) is returned on a failure |
| * with the returned h_errno value provided the reason for the failure. |
| * |
| ****************************************************************************/ |
| |
| int gethostbyname2_r(FAR const char *name, int type, |
| FAR struct hostent *host, FAR char *buf, |
| size_t buflen, FAR struct hostent **result, |
| FAR int *h_errnop) |
| { |
| struct hostent_s tmp; |
| int ret; |
| |
| /* Linux man page says result must be NULL in case of failure. */ |
| |
| *result = NULL; |
| |
| ret = gethostentbyname_r(name, &tmp, buf, buflen, h_errnop, 0); |
| if (ret == OK) |
| { |
| if (convert_hostent(&tmp, type, host)) |
| { |
| *result = host; |
| } |
| else |
| { |
| if (h_errnop) |
| { |
| *h_errnop = HOST_NOT_FOUND; |
| } |
| |
| ret = ERROR; |
| } |
| } |
| |
| return ret; |
| } |
| |
| #endif /* CONFIG_LIBC_NETDB */ |