Raspberry pi 尝试在脚本中有条件地启动/usr/sbin/hostapd

此代码运行在raspberry pi3上

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

在脚本中（如果未为此设备设置wifi，则运行此部分）

从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

但是，如果我现在登录（通过硬连线网络）并运行以下程序，它就会工作

#/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

所以我想这可能是个时间问题？这就是我目前让脚本运行S05的原因

谢谢你的帮助

我发现了这个问题。 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 &

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 &