diff options
Diffstat (limited to 'security/selinux/avc.c')
-rw-r--r-- | security/selinux/avc.c | 63 |
1 files changed, 1 insertions, 62 deletions
diff --git a/security/selinux/avc.c b/security/selinux/avc.c index 8ee42b2a5f19..1a04247e3a17 100644 --- a/security/selinux/avc.c +++ b/security/selinux/avc.c @@ -458,7 +458,7 @@ static void avc_audit_post_callback(struct audit_buffer *ab, void *a) } /* This is the slow part of avc audit with big stack footprint */ -static noinline int slow_avc_audit(u32 ssid, u32 tsid, u16 tclass, +noinline int slow_avc_audit(u32 ssid, u32 tsid, u16 tclass, u32 requested, u32 audited, u32 denied, struct common_audit_data *a, unsigned flags) @@ -497,67 +497,6 @@ static noinline int slow_avc_audit(u32 ssid, u32 tsid, u16 tclass, } /** - * avc_audit - Audit the granting or denial of permissions. - * @ssid: source security identifier - * @tsid: target security identifier - * @tclass: target security class - * @requested: requested permissions - * @avd: access vector decisions - * @result: result from avc_has_perm_noaudit - * @a: auxiliary audit data - * @flags: VFS walk flags - * - * Audit the granting or denial of permissions in accordance - * with the policy. This function is typically called by - * avc_has_perm() after a permission check, but can also be - * called directly by callers who use avc_has_perm_noaudit() - * in order to separate the permission check from the auditing. - * For example, this separation is useful when the permission check must - * be performed under a lock, to allow the lock to be released - * before calling the auditing code. - */ -inline int avc_audit(u32 ssid, u32 tsid, - u16 tclass, u32 requested, - struct av_decision *avd, int result, struct common_audit_data *a, - unsigned flags) -{ - u32 denied, audited; - denied = requested & ~avd->allowed; - if (unlikely(denied)) { - audited = denied & avd->auditdeny; - /* - * a->selinux_audit_data->auditdeny is TRICKY! Setting a bit in - * this field means that ANY denials should NOT be audited if - * the policy contains an explicit dontaudit rule for that - * permission. Take notice that this is unrelated to the - * actual permissions that were denied. As an example lets - * assume: - * - * denied == READ - * avd.auditdeny & ACCESS == 0 (not set means explicit rule) - * selinux_audit_data->auditdeny & ACCESS == 1 - * - * We will NOT audit the denial even though the denied - * permission was READ and the auditdeny checks were for - * ACCESS - */ - if (a && - a->selinux_audit_data->auditdeny && - !(a->selinux_audit_data->auditdeny & avd->auditdeny)) - audited = 0; - } else if (result) - audited = denied = requested; - else - audited = requested & avd->auditallow; - if (likely(!audited)) - return 0; - - return slow_avc_audit(ssid, tsid, tclass, - requested, audited, denied, - a, flags); -} - -/** * avc_add_callback - Register a callback for security events. * @callback: callback function * @events: security events |