linux-kernel - [PATCH v2 1/6] ima: rename IMA_ACTION_FLAGS to IMA_NONACTION

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Date:   Sun,  9 Jan 2022 13:55:12 -0500
From:   Mimi Zohar <zohar@...ux.ibm.com>
To:     linux-integrity@...r.kernel.org
Cc:     Mimi Zohar <zohar@...ux.ibm.com>,
        Eric Biggers <ebiggers@...nel.org>,
        linux-fscrypt@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/6] ima: rename IMA_ACTION_FLAGS to IMA_NONACTION_FLAGS

Simple policy rule options, such as fowner, uid, or euid, can be checked
immediately, while other policy rule options, such as requiring a file
signature, need to be deferred.

The 'flags' field in the integrity_iint_cache struct contains the policy
action', 'subaction', and non action/subaction.

action: measure/measured, appraise/appraised, (collect)/collected,
        audit/audited
subaction: appraise status for each hook (e.g. file, mmap, bprm, read,
        creds)
non action/subaction: deferred policy rule options and state

Rename the IMA_ACTION_FLAGS to IMA_NONACTION_FLAGS.

Signed-off-by: Mimi Zohar <zohar@...ux.ibm.com>
---
 security/integrity/ima/ima_main.c   | 2 +-
 security/integrity/ima/ima_policy.c | 2 +-
 security/integrity/integrity.h      | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 465865412100..e51ddc8d84ee 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -263,7 +263,7 @@ static int process_measurement(struct file *file, const struct cred *cred,
 		/* reset appraisal flags if ima_inode_post_setattr was called */
 		iint->flags &= ~(IMA_APPRAISE | IMA_APPRAISED |
 				 IMA_APPRAISE_SUBMASK | IMA_APPRAISED_SUBMASK |
-				 IMA_ACTION_FLAGS);
+				 IMA_NONACTION_FLAGS);
 
 	/*
 	 * Re-evaulate the file if either the xattr has changed or the
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
index 320ca80aacab..a1df015934bc 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -712,7 +712,7 @@ int ima_match_policy(struct user_namespace *mnt_userns, struct inode *inode,
 				     func, mask, func_data))
 			continue;
 
-		action |= entry->flags & IMA_ACTION_FLAGS;
+		action |= entry->flags & IMA_NONACTION_FLAGS;
 
 		action |= entry->action & IMA_DO_MASK;
 		if (entry->action & IMA_APPRAISE) {
diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h
index 547425c20e11..d045dccd415a 100644
--- a/security/integrity/integrity.h
+++ b/security/integrity/integrity.h
@@ -30,8 +30,8 @@
 #define IMA_HASH		0x00000100
 #define IMA_HASHED		0x00000200
 
-/* iint cache flags */
-#define IMA_ACTION_FLAGS	0xff000000
+/* iint policy rule cache flags */
+#define IMA_NONACTION_FLAGS	0xff000000
 #define IMA_DIGSIG_REQUIRED	0x01000000
 #define IMA_PERMIT_DIRECTIO	0x02000000
 #define IMA_NEW_FILE		0x04000000
-- 
2.27.0