[PATCH v2 3/6] ima: Log the same audit cause whenever a file has no signature

[Thiago Jung Bauermann]

If the file doesn't have an xattr, ima_appraise_measurement sets cause to
"missing-hash" while if there's an xattr but it's a digest instead of a
signature it sets cause to "IMA-signature-required".

Fix it by setting cause to "IMA-signature-required" in both cases.

Signed-off-by: Thiago Jung Bauermann <bauer...@linux.vnet.ibm.com>
---
 security/integrity/ima/ima_appraise.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/security/integrity/ima/ima_appraise.c 
b/security/integrity/ima/ima_appraise.c
index ea36a4f134f4..809ba70fbbbf 100644
--- a/security/integrity/ima/ima_appraise.c
+++ b/security/integrity/ima/ima_appraise.c
@@ -217,7 +217,8 @@ int ima_appraise_measurement(enum ima_hooks func,
                if (rc && rc != -ENODATA)
                        goto out;
 
-               cause = "missing-hash";
+               cause = iint->flags & IMA_DIGSIG_REQUIRED ?
+                               "IMA-signature-required" : "missing-hash";
                status = INTEGRITY_NOLABEL;
                if (opened & FILE_CREATED)
                        iint->flags |= IMA_NEW_FILE;
-- 
2.7.4