linux-kernel - [PATCH V34 29/29] lockdown: Print current->comm in restriction messages

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Date:   Fri, 21 Jun 2019 17:03:58 -0700
From:   Matthew Garrett <matthewgarrett@...gle.com>
To:     jmorris@...ei.org
Cc:     linux-security-module@...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 V34 29/29] 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 98f9ee0026d5..9ca6f442fbc7 100644
--- a/security/lockdown/lockdown.c
+++ b/security/lockdown/lockdown.c
@@ -83,8 +83,8 @@ static int lockdown_is_locked_down(enum lockdown_reason what)
 {	
 	if ((kernel_locked_down >= what)) {
 		if (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 -EPERM;
 	}
 
-- 
2.22.0.410.gd8fdbe21b5-goog