linux-kernel - [PATCH V33 27/30] lockdown: Print current->comm in restriction messages

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Message-Id: <20190621011941.186255-28-matthewgarrett@google.com>
Date:   Thu, 20 Jun 2019 18:19:38 -0700
From:   Matthew Garrett <matthewgarrett@...gle.com>
To:     jmorris@...ei.org
Cc:     linux-security@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-api@...r.kernel.org,
        Matthew Garrett <matthewgarrett@...gle.com>,
        David Howells <dhowells@...hat.com>,
        Matthew Garrett <mjg59@...gle.com>
Subject: [PATCH V33 27/30] lockdown: Print current->comm in restriction messages

Print the content of current->comm in messages generated by lockdown to
indicate a restriction that was hit.  This makes it a bit easier to find
out what caused the message.

The message now patterned something like:

        Lockdown: <comm>: <what> is restricted; see man kernel_lockdown.7

Signed-off-by: David Howells <dhowells@...hat.com>
Signed-off-by: Matthew Garrett <mjg59@...gle.com>
---
 security/lockdown/lockdown.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/security/lockdown/lockdown.c b/security/lockdown/lockdown.c
index 14edc475d75c..408f0048f8a2 100644
--- a/security/lockdown/lockdown.c
+++ b/security/lockdown/lockdown.c
@@ -80,8 +80,8 @@ early_param("lockdown", lockdown_param);
 static int lockdown_is_locked_down(enum lockdown_reason what)
 {	
 	if ((kernel_locked_down >= what) && lockdown_reasons[what])
-		pr_notice("Lockdown: %s is restricted; see man kernel_lockdown.7\n",
-			  lockdown_reasons[what]);
+		pr_notice("Lockdown: %s: %s is restricted; see man kernel_lockdown.7\n",
+			  current->comm, lockdown_reasons[what]);
 	return (kernel_locked_down >= what);
 }
 
-- 
2.22.0.410.gd8fdbe21b5-goog