Do it yourself to add an OpenWrt boot script

In the openwrt system, the init process is replaced by procd. As the parent process, procd can monitor the status of the child process. Once the child process exits, you can try to restart the process at a certain moment. There are uhttpd, netifd, etc. that are monitored by procd in the op system. There is a USE_PROCD = 1 flag in the /etc/init.d/ folder, the following describes how to let procd start a certain application. My application name is binloader, and the script code is directly added.

#! / bin / sh /etc/rc.common 
# Copyright (C) 2008 OpenWrt.org 

START = 98 #Sequence of 
execution, sorting according to string order is not numeric sorting 

USE_PROCD = 1 
#Use procd to start 

BINLOADER_BIN = "/ usr / bin / binloader " 

start_service () { 
    procd_open_instance #Create 
    an instance, an application can see multiple instances in 
    procd #ubus call service list You can view the instance 
    procd_set_param respawn #Define the 
    respawn parameters, tell procd to try when the binloader program exits restart 
    procd_set_param command "$ BINLOADER_BIN" 
    # binloader execution command is "/ usr / bin / binloader" , if there are later followed by the parameters can be directly 

    procd_close_instance 
# closed instance 
} 
#start_service function must be redefined 

stop_service () { 
    RM - f /var/run/binloader.pid 
}
#stop_service Redefine, what to do after exiting the server 

restart () { 
    stop 
    start 
}

It must be pointed out that the program executed by procd cannot be a daemon daemon, because after the main process of the daemon exits, it appears to procd that the program exited, then it will enter the respawn process, and then repeatedly start and exit.

Finally failed

procd: Instance binloader::instance1 s in a crash loop 6 crashes, 0 seconds since last crash

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Original link: https://blog.csdn.net/liangdsing/java/article/details/53906445

Do it yourself to add an OpenWrt boot script

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