Re: [Dprobes] can't get it working

[<da...@us...>]

ok i figured out why things wouldn't work.  In the readme for 
dprobes-3.1.0 it states for making the device node.

> rm -f /dev/dprobes
> MAJOR=`cat /proc/devices | awk '$2=="raw" {print $1}'`
> mknod /dev/dprobes c $MAJOR 0

but dprobes registers and asks for a dynamic major number, and thus is not 
bound to the raw device major number.  I get 253 on my machine.  
in order to get stuff to work i had to make the major number match that 
of the driver.  this documentation was not in 3.0.0, so i tried checking 
the CVS web log to see why it was added but the cvs web system is broken 
for CHANGES, COPYING and README.  

am i some how setting up dprobes in an incorrect yet functional manner?


On Tue, 20 Nov 2001, S Vamsikrishna wrote:

> 
> Hello,
> 
> We have discovered that when dprobes is built as a module and modversions
> is on, there is a problem with module_list not getting versioned. You can
> fix this by editing kernel/ksyms.c, find the line
>      EXPORT_SYMBOL(module_list);
> 
> and add
>      extern struct module * module_list;
> just before the EXPORT_SYMBOL.
> 
> After this you need to do some thing similar to the following from the root
> dir of kernel source tree:
> 
> mv .config ..
> make mrproper
> mv ../.config .
> make oldconfig
> make dep clean bzImage modules
> #install, boot.
> 
> Please use dprobes version 3.1 (or above when available).
> 
> Do let us know if you have any difficulties.
> 
> Regards.. Vamsi.
> 
> Vamsi Krishna S.
> Linux Technology Center,
> IBM Software Lab, Bangalore.
> Ph: +91 80 5044959
> Internet: vam...@in...
> 
> 
> da...@us... on 11/17/2001 01:10:26 AM
> 
> Please respond to da...@us...
> 
> To:   dp...@ww...
> cc:    (bcc: S Vamsikrishna/India/IBM)
> Subject:  [Dprobes] can't get it working
> 
> 
> 
> 
> i get this error: applyppdf failed
> 
> an strace shows
> ioctl(3, 0, 0xbffff760)                 = -1 EINVAL (Invalid argument)
> it would seem like the driver is not installed or something.
> i created /dev/dprobes properly.
> 
> i'd like to install the dprobes as a module so i can more easily figure
> out what is going wrong, but it can't resolve a symbol 'module_list'.
> 
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> Dp...@ww...
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> 
> 
>