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Old 04-15-2011, 07:36 AM   #1
Killcam
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Registered: Apr 2011
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Kernel configuration for C / C++ program


Hello,

I am writing a C program (recovery utility) that needs to run at boot.
I have found my way into this (booting a kernel) and now I want to configure the kernel so that it doesn't take a lot of space and compile fast so that I can edit the source afterwards and make it run my program on the kernel's startup.for the least size
The only thing this program needs is reading and writing files in all of the local hard disks (and some standard libraries such as stdio.h and stdlib.h) so I can keep the kernel simple by removing a lot of stuff such as networking, encryption algorithms and others.

What would be the best configuration for this, so that it is really small in size?
Should I simply start a new configuration and then only select things that I need, or should I take the "default" configuration and start removing things?

What options are a MUST to make the kernel run?
 
Old 04-17-2011, 03:55 PM   #2
paulsm4
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Registered: Mar 2004
Distribution: SusE 8.2
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Two completely separate questions here:
1. How to configure a custom kernel
2. How to run a user-space program at system startup

For 1), I'd suggest "don't worry about it for now".

For 2), I'd suggest "just an an entry to /etc/inittab"
<= For something other than a quick'n'dirty hack, you want to create start/stop scripts in /etc/init.d instead.

PS:
You might also want to look at using Knoppix.

Last edited by paulsm4; 04-17-2011 at 03:58 PM.
 
  


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