Messages in this thread | | | Subject | Re: [PATCH 2.6.9] fork: add a hook in do_fork() | From | Guillaume Thouvenin <> | Date | Wed, 24 Nov 2004 09:14:46 +0100 |
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On Tue, 2004-11-23 at 13:51 -0800, Chris Wright wrote: > * Guillaume Thouvenin (Guillaume.Thouvenin@Bull.net) wrote: > > static int elsa_task_alloc_security(struct task_struct *p) > > { > > printk(KERN_ALERT "intercept a fork: %d created by %d\n", > > p->pid, p->parent->pid); > > It's created by current. So, current->pid. p is not completely setup > yet, and is still largely duplication of current from dup_task_struct().
I see. Thus the correct answer is: process pointed by "current" is the parent of the process pointed by "p" when elsa_task_alloc_security() is called.
> And, IIRC, elsa is accounting related. > LSM is not the right framework, you should be using something like PAGG > or CKRM.
I understand your point of view. Elsa is accounting related that's true but I'm trying to provide a solution without modifying the Linux kernel tree. To achieve this I just need a hook in the fork to be inform when a process creates a child. LSM hook does the trick and it is already in the kernel. That's why I use the LSM hook (and I'm waiting to see PAGG or CKRM in the Linux kernel).
Thanks, Guillaume
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