Stephen Smalley wrote:
On Mon, 2009-08-24 at 23:37 +1000, Russell Coker wrote:
On Mon, 24 Aug 2009, Daniel J Walsh<dwalsh@xxxxxxxxxx> wrote:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=503252
audit2allow -l is looking for the load_policy message which does not go
to the dmesg, /var/log/messages. Therefore the tool has no idea when
policy was last loaded.
That would be a kernel bug then.
Well I believe the messages that are intercepted by the audit.log do not go
into dmesg, by design. Although Steve, James or Eric could probably say for
sure.
When auditd is not running on a Debian system with CentOS kernel
2.6.18-92.1.13.el5xen or Debian/Lenny kernel 2.6.26-2-xen-686 then nothing
goes to the kernel message log which is interpreted by audit2allow as a
candidate for the "-l" functionality.
It's OK if all the AVC messages go to the audit log and "dmesg|audit2allow -l"
gives no output. But if all AVC messages other than the load_policy message
go to the kernel message log then it's a bug.
Originally audit2allow used the avc: allowed message generated by
auditallow statement for load_policy to identify policy reloads. Later
it was switched to use the MAC_POLICY_LOAD events generated by the audit
framework. Those events should still get logged via printk if auditd is
not running, but it appears that the code (audit_printk_skb) will then
log the type= field as an integer rather than a string, and
audit2allow/sepolgen only looks for the string MAC_POLICY_LOAD.
So I suspect that this would be resolved by modifying sepolgen/audit.py
to also match on type=1403 for load messages. Try this:
diff --git a/sepolgen/src/sepolgen/audit.py b/sepolgen/src/sepolgen/audit.py
index 4717dae..efcc40d 100644
--- a/sepolgen/src/sepolgen/audit.py
+++ b/sepolgen/src/sepolgen/audit.py
@@ -314,7 +314,7 @@ class AuditParser:
elif i == "security_compute_sid:":
msg = ComputeSidMessage(line)
found = True
- elif i == "type=MAC_POLICY_LOAD":
+ elif i == "type=MAC_POLICY_LOAD" or i == "type=1403":
msg = PolicyLoadMessage(line)
found = True
elif i == "type=AVC_PATH":
Merged in sepolgen 1.0.19
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