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apparmor: document capability.c:profile_capable ad ptr not being NULL

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The profile_capabile function takes a struct apparmor_audit_data *ad,
which is documented as possibly being NULL. However, the single place that
calls this function never passes it a NULL ad. If we were ever to call
profile_capable with a NULL ad elsewhere, we would need to rework the
function, as its very first use of ad is to dereference ad->class without
checking if ad is NULL.

Thus, document profile_capable's ad parameter as not accepting NULL.

Signed-off-by: Ryan Lee <ryan.lee@canonical.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
This commit is contained in:
Ryan Lee 2024-09-24 17:56:05 -07:00 committed by John Johansen
parent 9b89713242
commit 8532503eac
1 changed files with 1 additions and 1 deletions
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security/apparmor/capability.c
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@ -111,7 +111,7 @@ static int audit_caps(struct apparmor_audit_data *ad, struct aa_profile *profile
* @profile: profile being enforced (NOT NULL, NOT unconfined)
* @cap: capability to test if allowed
* @opts: CAP_OPT_NOAUDIT bit determines whether audit record is generated
* @ad: audit data (MAY BE NULL indicating no auditing)
* @ad: audit data (NOT NULL)
*
* Returns: 0 if allowed else -EPERM
*/