[TriLUG] Laptop CD Drive

[Brian Phelps]

Thanks Brian D for your help!  
That works! Heres the code for anyone else who wants to fix this
annoying laptop cd-rom problem:

#include <sys/ioctl.h>
#include <stdio.h>
#include <fcntl.h>
#include <linux/cdrom.h>
#include <string.h>
#include <libgen.h>


int main(int argc, char* argv[]){
   int fd;
   fd = open("/dev/scd0", O_RDONLY);
   ioctl(fd, CDROM_LOCKDOOR, 1);
   printf("CD locked!\n");
   return 0;
}

write into lock.c
execute:
gcc lock.c -o main && sudo ./lock

on the line:
ioctl(fd, CDROM_LOCKDOOR, 1);
change the 1 to a 0 to get the drive to unlock

This is now a keyboard shortcut w/ gksu on my laptop!

On Fri, 2008-03-28 at 10:53 -0400, Brian Daniels wrote:
> On Fri, Mar 28, 2008 at 08:49:28AM -0400, Brian Phelps wrote:
> > My laptop has a trigger-happy CD Drive button.  Is there a way (command
> > or system call) to disable the drive from ejecting upon pressing the
> > button?
> > 
> > 
> > -Brian
> > -- 
> > <a href=http://electronjunkie.wordpress.com>Got e-?</a>
> 
> There's a system call:
> http://www.mjmwired.net/kernel/Documentation/ioctl/cdrom.txt#773
> CDROM_LOCKDOOR
> 
> that would work.
> 
> hdparm has a -L option to set the drive's doorlock flag - don't know if that 
> would work on a cd...
> 
> --Brian
> 
> -- 
> Be it thy course to busy giddy minds
> With foreign quarrels; that action, hence borne out,
> May waste the memory of the former days.
> 			Henry IV, Part 2
> 	
> 
> Brian Daniels                  bitmage at pobox.com
>       http://www.eviloverlord.net

-- 
<a href=http://electronjunkie.wordpress.com>Got e-?</a>