On Fri, 2010-06-25 at 16:18 -0400, Daniel J Walsh wrote: > On 06/25/2010 06:30 AM, Dominick Grift wrote: > > On 06/25/2010 12:11 PM, Alice Mynona wrote: > >> Stephen Smalley schrieb am 24.06.2010 19:33 Uhr: > >>> On Thu, 2010-06-24 at 13:12 -0400, Stephen Smalley wrote: > >>>> On Thu, 2010-06-24 at 17:01 +0200, Alice Mynona wrote: > >>>>> Hello, > >>>>> > >>>>> during the developing of a SELinux module I got the following error messages when executing "audit2allow -a -l" > >>>>> > >>>>> ... > >>>>> libsepol.context_from_record: type antivirus_t is not defined > >>>>> libsepol.context_from_record: could not create context structure > >>>>> libsepol.context_from_string: could not create context structure > >>>>> libsepol.sepol_context_to_sid: could not convert unconfined_u:unconfined_r:antivirus_t:s0 to sid > >>>>> > >>>>> "antivirus_t" is a domain I have defined in my module: > >>>>> > >>>>> type antivirus_t; > >>>>> domain_type(antivirus_t) > >>>>> > >>>>> I have already removed the module (semodule -r antivirus.pp && semodule -R) and did a file context repair afterwards (fixfiles restore). The error still exists. > >>>>> > >>>>> I have reinstalled the policy (yum reinstall selinux-policy-*), but the problem remains. I have also taken a look at "file_contexts" (cd /etc/selinux/targeted/modules/active && grep antivirus_t file_contexts*), but there's no "antivirus_t" anymore. > >>>>> > >>>>> Can you help me to find the cause of the problem? I don't know how to debug libsepol-messages. > >>>>> > >>>>> I'm using "selinux-policy-targeted-3.6.32-118.fc12.noarch". > >>>> > >>>> Sounds like the -l option to audit2allow isn't working correctly, so > >>>> that instead of only processing audit messages since the last policy > >>>> reload, you are still processing the audit messages from when that > >>>> policy module was installed, and unsurprisingly it cannot map those > >>>> contexts since you removed the module. That would be a bug in > >>>> audit2allow/sepolgen. > >>>> > >>>> Workaround would be to use ausearch to select the desired range of > >>>> messsages specifically, e.g. > >>>> /sbin/ausearch -m AVC -ts today | audit2allow > >>> > >> > >> I did a reload today at 08:36:00 a.m. (semodule -R). Round about two and half hours later I checked the auditlog: > >> > >> ausearch -m AVC --start 25.06.2010 08:36:00 --end 25.06.2010 11:00:00 > >> > >> Only messages from ssh_t (success=yes). Fine. But "audit2allow -a -l" still throws error messages: > >> > >> ... > >> libsepol.context_from_record: type antivirus_t is not defined > >> libsepol.context_from_record: could not create context structure > >> libsepol.context_from_string: could not create context structure > >> libsepol.sepol_context_to_sid: could not convert unconfined_u:unconfined_r:antivirus_t:s0 to sid > >> ... > >> > >>> Dan - looks like you pushed the audit2why analyze calls down into > >>> sepolgen while it is parsing the messages. But this means that all > >>> messages will be analyzed even if the user specified -l. > >>> > >> > >> I will wait for Dan's answer :-). > >> > >> Problem solved. @All: Thanks for your help. > >> > >> Best regards, > >> > >> Alice > >> > >> p.s.: > >> I still don't know how to debug sepol-messages. Can you give me a hint? > > > > I think it is not just with the -l option as i had similar output today > > by using plain ausearch -m avc -ts recent | audit2allow: > > > > libsepol.context_from_record: invalid security context: > > "staff_u:staff_r:mozilla_t:s0-s0:c0.c1023" > > libsepol.context_from_record: could not create context structure > > libsepol.context_from_string: could not create context structure > > libsepol.sepol_context_to_sid: could not convert > > staff_u:staff_r:mozilla_t:s0-s0:c0.c1023 to sid > > libsepol.context_from_record: invalid security context: > > "staff_u:staff_r:mozilla_t:s0-s0:c0.c1023" > > > > > >> > >> -- > >> This message was distributed to subscribers of the selinux mailing list. > >> If you no longer wish to subscribe, send mail to majordomo@xxxxxxxxxxxxx with > >> the words "unsubscribe selinux" without quotes as the message. > > > > > Yes I want the analysis to show up in audit2allow, If libsemanage would > just shut up, we really should ignore the errors. Then use semanage_msg_set_callback(hnd, NULL, NULL); -- Stephen Smalley National Security Agency -- This message was distributed to subscribers of the selinux mailing list. If you no longer wish to subscribe, send mail to majordomo@xxxxxxxxxxxxx with the words "unsubscribe selinux" without quotes as the message.
