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Lil C Daemon

Little C Daemon is just that, a small simple program that
daemonizes your Linux programs. Just link it in your script
and call it. It will be optimized for embedded Linux applications and other low memory systems.

Installation

Add the following in your code of your main file you want to daemonize.

Code Usage Example 0

#include "lilcdaemon.h"

// ( No Umask, No Working Dir Change, No Closing STD, No Handling Signals )

if ( lilcdaemon(-1, 0, 0, 0) != 0 ){
   exit(-1);
}

Code Usage Example 1

#include "lilcdaemon.h"

// Umask 0, Working Dir '/', Close STD, Handle Signals

if ( lilcdaemon(0, "/", 1, 1) != 0 ){
   exit(-1);
}

Compile

gcc -std=gnu99 -o sampledaemon ./example_src/sampleprogram.c ./src/lilcdaemon.c -lm

Usage

sudo ./sampledaemon

Results

Executing tail while sampledaemon is running:

sysop@salish:~/development/embedded/lil-c-daemon/src$ ./sampledaemon && tail -f /var/log/syslog
    Sep 22 09:32:47 salish lilcdaemon[29266]: Sample Program output test #0
    Sep 22 09:32:48 salish lilcdaemon[29266]: Sample Program output test #1
    Sep 22 09:32:49 salish lilcdaemon[29266]: Sample Program output test #2
    Sep 22 09:32:50 salish lilcdaemon[29266]: Sample Program output test #3
    Sep 22 09:32:51 salish lilcdaemon[29266]: Sample Program output test #4
    Sep 22 09:32:52 salish lilcdaemon[29266]: Sample Program output test #5
    Sep 22 09:32:53 salish lilcdaemon[29266]: Sample Program output test #6

Executing ps while sampledaemon is running:

sysop@salish:~/development/Embedded/lil-c-daemon$ ps -auxf | grep -i sampledaemo[n]
    USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
    sysop    10007  0.0  0.0   4516    76 ?        Ss   09:56   0:00 ./sampledaemon

Todo

1. Add build instructions for cross compilation on Openwrt/LEDE
2. Create sample init scripts for Openwrt/LEDE
3. Test on Raspberry PI and other Single Board Computers
4. Clean up and normalize code
5. Add optional additional features and more usage examples
6. Test

Contributing

1. Why? It's terrible right now, so why not?
2. Create an Issue
3. Submit a Pull Request

History

2018-09-22: Created initial Daemonizing Code

Credits

Creator: Joshua Whittington
Contact: lilc_git@doubleyoudouble.me

License

MIT
https://github.com/youdouble/lil-c-daemon/blob/master/LICENSE

Note:

The Legacy connotation is based on the following: Man 7 Definition SysV