Re: [PATCH v3 4/4] ima: Differentiate auditing policy rules from "audit" actions

On Mon, Jun 4, 2018 at 4:54 PM, Stefan Berger <stefanb(a)linux.vnet.ibm.com&gt; wrote: > The AUDIT_INTEGRITY_RULE is used for auditing IMA policy rules and > the IMA "audit" policy action. This patch defines > AUDIT_INTEGRITY_POLICY_RULE to reflect the IMA policy rules. > > Since we defined a new message type we can now also pass the > audit_context and get an associated SYSCALL record. This now produces > the following records when parsing IMA policy's rules: Aaand now I see you included the current->audit_context pointer I mentioned in my comments for 3/4 ;) So basically this should be fine, although I should point out that you do not need to define a new message type to associate records together. The fact that we don't associate all connected records is basically a bug. Anyway, patches 3/4 and 4/4 look good to me. Considering this is likely going in during the *next* merge window, I would ask that you convert from "current->audit_context" to "audit_context()" as soon as this merge window closes. Thanks!

> type=UNKNOWN[1807] msg=audit(1527888965.738:320): action=audit \ > func=MMAP_CHECK mask=MAY_EXEC res=1 > type=UNKNOWN[1807] msg=audit(1527888965.738:320): action=audit \ > func=FILE_CHECK mask=MAY_READ res=1 > type=SYSCALL msg=audit(1527888965.738:320): arch=c000003e syscall=1 \ > success=yes exit=17 a0=1 a1=55bcfcca9030 a2=11 a3=7fcc1b55fb38 \ > items=0 ppid=1567 pid=1601 auid=0 uid=0 gid=0 euid=0 suid=0 \ > fsuid=0 egid=0 sgid=0 fsgid=0 tty=tty2 ses=2 comm="echo" \ > exe="/usr/bin/echo" \ > subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) > > Signed-off-by: Stefan Berger <stefanb(a)linux.vnet.ibm.com&gt; > --- > include/uapi/linux/audit.h | 1 + > security/integrity/ima/ima_policy.c | 4 ++-- > 2 files changed, 3 insertions(+), 2 deletions(-) > > diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h > index 65d9293f1fb8..cb358551376b 100644 > --- a/include/uapi/linux/audit.h > +++ b/include/uapi/linux/audit.h > @@ -148,6 +148,7 @@ > #define AUDIT_INTEGRITY_PCR 1804 /* PCR invalidation msgs */ > #define AUDIT_INTEGRITY_RULE 1805 /* policy rule */ > #define AUDIT_INTEGRITY_EVM_XATTR 1806 /* New EVM-covered xattr */ > +#define AUDIT_INTEGRITY_POLICY_RULE 1807 /* IMA policy rules */ > > #define AUDIT_KERNEL 2000 /* Asynchronous audit record. NOT A REQUEST. */ > > diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c > index bc99713dfe57..f7230db217a7 100644 > --- a/security/integrity/ima/ima_policy.c > +++ b/security/integrity/ima/ima_policy.c > @@ -652,8 +652,8 @@ static int ima_parse_rule(char *rule, struct ima_rule_entry *entry) > bool uid_token; > int result = 0; > > - ab = integrity_audit_log_start(NULL, GFP_KERNEL, > - AUDIT_INTEGRITY_RULE); > + ab = integrity_audit_log_start(current->audit_context, GFP_KERNEL, > + AUDIT_INTEGRITY_POLICY_RULE); > > entry->uid = INVALID_UID; > entry->fowner = INVALID_UID; > -- > 2.13.6 >