Re: problem with semaphores

[Bashuman Deb <bashuman.deb@nokia.com>]

You seem to be using user space stuff for a kernel space module. They are very basic differences between a kernel module and a user space program. User space programs are stand alones which use libraries as you know them. eg pthreads, libc, libm etc etc and run as a seperate process. Kernel modules attach themselves dynamically to an already running kernel which has a fixed set of already linked symbols. Obviously pthread functions not being a part of it. You would want to read something basic like http://www.linuxdoc.org/LDP/lkmpg/mpg.html before jumping into the big bad world of kernel spaces... 
:-)

On Thu, 2002-03-07 at 07:54, ext aaaaaa qqq wrote:
> Dear Friends,
>
>  I am using insmod and I am getting the following
> errors when I am trying to insert a module.
>
> unresolved symbols: semget
> unresolved symbols: semop
> unresolved symbols: pthread_mutex_init
> unresolved symbols: pthread_mutex_lock
> unresolved symbols: pthread_mutex_trylock
> unresolved symbols: pthread_mutex_unlock
>
> Can anyone help me in solving this.
>
> regards,
> Sudhakar.
>
>
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