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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.

Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
This commit is contained in:
Mimi Zohar 2021-12-28 09:53:14 -05:00
parent e4e071baea
commit aae6ccbd82
3 changed files with 4 additions and 4 deletions
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2
security/integrity/ima/ima_main.c
View File

@ -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

2
security/integrity/ima/ima_policy.c
View File

@ -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) {

4
security/integrity/integrity.h
View File

@ -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