Re: [PATCH ghak59 V2 1/6] audit: give a clue what CONFIG_CHANGE op was involved

The failure to add an audit rule due to audit locked gives no clue what CONFIG_CHANGE operation failed. Similarly the set operation is the only other operation that doesn't give the "op=" field to indicate the action. All other CONFIG_CHANGE records include an op= field to give a clue as to what sort of configuration change is being executed. Since these are the only CONFIG_CHANGE records that that do not have an op= field, add them to bring them in line with the rest. Old records: type=CONFIG_CHANGE msg=audit(1519812997.781:374): pid=610 uid=0 auid=0 ses=1 subj=... audit_enabled=2 res=0 type=CONFIG_CHANGE msg=audit(2018-06-14 14:55:04.507:47) : audit_enabled=1 old=1 auid=unset ses=unset subj=... res=yes New records: type=CONFIG_CHANGE msg=audit(1520958477.855:100): pid=610 uid=0 auid=0 ses=1 subj=... op=add_rule audit_enabled=2 res=0 type=CONFIG_CHANGE msg=audit(2018-06-14 14:55:04.507:47) : op=set audit_enabled=1 old=1 auid=unset ses=unset subj=... res=yes See: https://github.com/linux-audit/audit-kernel/issues/59 Signed-off-by: Richard Guy Briggs <rgb(a)redhat.com&gt; --- kernel/audit.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/kernel/audit.c b/kernel/audit.c index 2a80587..1ed8723 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -400,7 +400,7 @@ static int audit_log_config_change(char *function_name, u32 new, u32 old, ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE); if (unlikely(!ab)) return rc; - audit_log_format(ab, "%s=%u old=%u", function_name, new, old); + audit_log_format(ab, "op=set %s=%u old=%u", function_name, new, old); audit_log_session_info(ab); rc = audit_log_task_context(ab); if (rc) @@ -1362,7 +1362,9 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh) return -EINVAL; if (audit_enabled == AUDIT_LOCKED) { audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE); - audit_log_format(ab, " audit_enabled=%d res=0", audit_enabled); + audit_log_format(ab, " op=%s_rule audit_enabled=%d res=0", + msg_type == AUDIT_ADD_RULE ? "add" : "remove",

+ audit_enabled); audit_log_end(ab); return -EPERM; }