Thanks On Mon, Jan 10, 2011 at 10:16 PM, Rajat Sharma <fs.rajat@gmail.com> wrote:
Hi,
yes you are missing a very vital thing and that is EXPORT_SYMBOL. Loadable Kernel modules are not part of kernel image and can not just use any symbol of kernel, They can use only exported symbols either exported through EXPORT_SYMBOL or EXPORT_SYMBOL_GPL. GPL version has limitation that your module license should be GPL too and you have to make it open source.
Anyways you can always write a similar function in your module:
task_lock(tsk); strncpy(buf, tsk->comm, sizeof(tsk->comm)); task_unlock(tsk);
Note that task_lock is an static inline function in sched.h so you can safely use that.
Rajat
On Tue, Jan 11, 2011 at 11:32 AM, Hanumant Singh <hanumant07@gmail.com> wrote:
Hi I am trying to write a simple module that sort of emulates the ps command. I am trying to get the comm string for the task, using get_task_comm, but the make command keeps telling me that the symbol get_task_comm is not defined. I have included linux/sched.h. This is the header file, which I believe has the prototype definition for the function. Am I missing something? Thanks Hanumant _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies