On Tue, 16 Mar 2004 23:09:36 -0700
Simon Timms <[EMAIL PROTECTED]> wrote:
> Hi there, I am playing around with kernel modules trying to learn
> something and hopefully not destroy my computer too badly. Right now
> my goal is to print out the user id from an open() call. I am basing
> my work around that found at http://www.nux-acid.org/src/open.c. To
> that basic code I added (in the new_open method)
> printf("uid %u\n", p->p_ucred->cr_uid);
> However this completely doesn't work and I end up crashing the kernel.
> I notice in other places people do things like
> uid_t uid = p->p_cred->p_svuid;
> however I don't see a p_cred member in the proc structure. Is there
> something obvious I am missing here? Complete code listing at
> http://simon.ma.cx/module.c. Any additional comments/criticisms
> always appreciated.
> Thanks, Simon
What version of FreeBSD are you trying this on?
You might want to look at this thread on hackers@, it's very similar to
what you're trying to do, I think:
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