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

From: Matthew Garrett
Date: Thu Jun 20 2019 - 21:21:08 EST


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@xxxxxxxxxx>
Signed-off-by: Matthew Garrett <mjg59@xxxxxxxxxx>
---
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