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ima: extend ima_get_action() to return the policy pcr

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Different policy rules may extend different PCRs. This patch retrieves
the specific PCR for the matched rule.  Subsequent patches will include
the rule specific PCR in the measurement list and extend the appropriate
PCR.

Signed-off-by: Eric Richter <erichte@linux.vnet.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
This commit is contained in:
Eric Richter
2016-06-01 13:14:02 -05:00
committed by Mimi Zohar
parent 0260643ce8
commit 725de7fabb
5 changed files with 14 additions and 7 deletions
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5
security/integrity/ima/ima_api.c
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@@ -157,6 +157,7 @@ err_out:
* @inode: pointer to inode to measure
* @mask: contains the permission mask (MAY_READ, MAY_WRITE, MAY_EXECUTE)
* @func: caller identifier
* @pcr: pointer filled in if matched measure policy sets pcr=
*
* The policy is defined in terms of keypairs:
* subj=, obj=, type=, func=, mask=, fsmagic=
@@ -168,13 +169,13 @@ err_out:
* Returns IMA_MEASURE, IMA_APPRAISE mask.
*
*/
int ima_get_action(struct inode *inode, int mask, enum ima_hooks func)
int ima_get_action(struct inode *inode, int mask, enum ima_hooks func, int *pcr)
{
int flags = IMA_MEASURE | IMA_AUDIT | IMA_APPRAISE;
flags &= ima_policy_flag;
return ima_match_policy(inode, func, mask, flags);
return ima_match_policy(inode, func, mask, flags, pcr);
}
/*