test patch for new inode filter types

This is NOT full support for the new inode filter constructs I added to the policy, but is just enough to test some of it. I'm hoping someone else will write real userspace patches. One will need to apply the kernel patches and then install the new kernel headers (or update /usr/include/linux/audit.h by hand) Then apply this patch to audit and build a new audit (I found audit build sucks because it will build against the system libaudit rather than the one in tree, but you can fix this using make DESTDIR=[dir] install, and using the auditctl from [dir]/usr/local/sbin/) This patch supports two types of rules auditctl -a exit,always -F arch=b64 -S open -F obj_uid=500 Which audits all opens for a uid=500 file. (the kernel supports gid, but this patch doesn't, you can just copy the uid code to make gid work) This patch also supports auditctl -a exit,always -C Which will audit all cases where a process accesses a file in which the process uid != file uid. The kernel is a bit more flexible, it supports process_gid != file_gid. The kernel also supports == > <, etc. This portion of the patch needs to do support a better construct for parsing the intent and passing that down. But it seemed like a lot of work on a codebase I'm not familiar with and hoped someone familiar could write a text parse for this construct. We should be able to support something like: auditctl -a exit,always -F interfield!=uid I dunno what it should look like. But like I said, I just slapped -C as a way to test process_uid != file_uid, so it should be pretty easy to look at that and see how other interactions should work. -Eric