尝试有条件地在脚本中启动 /usr/sbin/hostapd

Question

这段代码运行正在树莓派 pi3

上运行

我有一个脚本 /etc/rc2.d/S05frameapp 有条件地启动 hostapd（查看是否已设置 wifi）

在脚本中（如果没有为此设备设置 wifi，此部分将运行）

echo "restarting etho"
/sbin/ifup wlan0

echo "Starting hostapd";
/usr/bin/nohup /usr/sbin/hostapd -B -P /var/run/hostapd.pid /etc/hostapd/hostapd.conf >> /tmp/hostapd.log 2>&1 &

echo "Starting dnsmasq ";
/usr/sbin/service dnsmasq start;

echo "Starting wifi_config node";
cd /home/wifi_listener/
/usr/bin/nohup /usr/local/bin/node app.js >> /tmp/nodeapp.log 2>&1 &

来自 nohup，在 /tmp/hostapd.log 中我看到

cat /tmp/hostapd.log
Configuration file: /etc/hostapd/hostapd.conf
Failed to create interface mon.wlan0: -95 (Operation not supported)
Could not set channel for kernel driver
Interface initialization failed
wlan0: interface state UNINITIALIZED->DISABLED
wlan0: AP-DISABLED
wlan0: Unable to setup interface.
hostapd_free_hapd_data: Interface wlan0 wasn't started

但如果我现在登录（通过有线网络）并且运行以下内容有效...

#/usr/sbin/hostapd -B -P /var/run/hostapd.pid /etc/hostapd/hostapd.conf
Configuration file: /etc/hostapd/hostapd.conf
Failed to create interface mon.wlan0: -95 (Operation not supported)
wlan0: Could not connect to kernel driver
Using interface wlan0 with hwaddr b8:27:eb:40:bd:a4 and ssid 
"WhatUlooknAtWillis"
wlan0: interface state UNINITIALIZED->ENABLED
wlan0: AP-ENABLED

所以我觉得这可能是时间问题？这就是为什么我现在有脚本运行 S05

感谢您的帮助

Answer 1

我发现了问题。这是启动hostapd和dnsmasq的顺序

修复方法是您需要先启动 dnsmasq，然后再启动 hostapd

echo "Starting dnsmasq ";
/usr/sbin/service dnsmasq start

echo "Starting hostapd";
/usr/bin/nohup /usr/sbin/hostapd -B -P /var/run/hostapd.pid /etc/hostapd/hostapd.conf >> /tmp/hostapd.log 2>&1 &

尝试有条件地在脚本中启动 /usr/sbin/hostapd

trying to start /usr/sbin/hostapd in a script conditionally

raspberry-pi

raspbian

raspberry-pi3