Function mac_system_check_sysctl

freebsd/security/mac/mac_system.c:221–236

    "struct sysctl_oid *", "struct sysctl_req *");

int
mac_system_check_sysctl(struct ucred *cred, struct sysctl_oid *oidp,
    void *arg1, int arg2, struct sysctl_req *req)
{
	int error;

	/*
	 * XXXMAC: We would very much like to assert the SYSCTL_LOCK here,
	 * but since it's not exported from kern_sysctl.c, we can't.
	 */
	MAC_POLICY_CHECK_NOSLEEP(system_check_sysctl, cred, oidp, arg1, arg2,
	    req);
	MAC_CHECK_PROBE3(system_check_sysctl, error, cred, oidp, req);

	return (error);
}