linux-kernel - [PATCH V32 25/27] lockdown: Print current->comm in restriction messages

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Message-Id: <20190404003249.14356-26-matthewgarrett@google.com>
Date:   Wed,  3 Apr 2019 17:32:47 -0700
From:   Matthew Garrett <matthewgarrett@...gle.com>
To:     jmorris@...ei.org
Cc:     linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, dhowells@...hat.com,
        linux-api@...r.kernel.org, luto@...nel.org,
        Matthew Garrett <matthewgarrett@...gle.com>,
        Matthew Garrett <mjg59@...gle.com>
Subject: [PATCH V32 25/27] 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/lock_down.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/security/lock_down.c b/security/lock_down.c
index 9913fff09ad0..2659722784cc 100644
--- a/security/lock_down.c
+++ b/security/lock_down.c
@@ -70,8 +70,8 @@ bool __kernel_is_locked_down(const char *what, enum lockdown_level level,
 			     bool first)
 {
 	if ((kernel_locked_down >= level) && what && first)
-		pr_notice("Lockdown: %s is restricted; see man kernel_lockdown.7\n",
-			  what);
+		pr_notice("Lockdown: %s: %s is restricted; see man kernel_lockdown.7\n",
+			  current->comm, what);
 	return (kernel_locked_down >= level);
 }
 EXPORT_SYMBOL(__kernel_is_locked_down);
-- 
2.21.0.392.gf8f6787159e-goog