70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/****************************************************************************
|
|
* apps/system/hostname/hostname_main.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
|
|
****************************************************************************/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
int main(int argc, FAR char *argv[])
|
|
{
|
|
int ret;
|
|
char hostname[HOST_NAME_MAX + 1];
|
|
|
|
if (argc > 1)
|
|
{
|
|
ret = sethostname(argv[1], strlen(argv[1]));
|
|
if (ret != 0)
|
|
{
|
|
printf("sethostname() returned %d\n", ret);
|
|
return EXIT_FAILURE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ret = gethostname(hostname, HOST_NAME_MAX);
|
|
if (ret != 0)
|
|
{
|
|
printf("gethostname() returned %d\n", ret);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
printf("%s\n", hostname);
|
|
}
|
|
|
|
return 0;
|
|
}
|