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system/hostname: Add a tool to get/set hostname

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This commit is contained in:
Norman Rasmussen 2021-12-28 18:16:43 -08:00 committed by Xiang Xiao
parent 7b48a119ac
commit 2a4db81217
4 changed files with 139 additions and 0 deletions
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13
system/hostname/Kconfig Normal file
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#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
config SYSTEM_HOSTNAME
tristate "'hostname' command"
default n
---help---
Enable the hostname tool
if SYSTEM_HOSTNAME
endif

23
system/hostname/Make.defs Normal file
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############################################################################
# apps/system/hostname/Make.defs
#
# 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.
#
############################################################################
ifneq ($(CONFIG_SYSTEM_HOSTNAME),)
CONFIGURED_APPS += $(APPDIR)/system/hostname
endif

34
system/hostname/Makefile Normal file
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############################################################################
# apps/system/hostname/Makefile
#
# 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.
#
############################################################################
include $(APPDIR)/Make.defs
# HOSTNAME tool built-in application info
PROGNAME = hostname
PRIORITY = SCHED_PRIORITY_DEFAULT
STACKSIZE = $(CONFIG_DEFAULT_TASK_STACKSIZE)
MODULE = $(CONFIG_SYSTEM_HOSTNAME)
# HOSTNAME tool
MAINSRC = hostname_main.c
include $(APPDIR)/Application.mk

69
system/hostname/hostname_main.c Normal file
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/****************************************************************************
* 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;
}