From 60cf7c5ed5f7087c4de87a7676b8c82d96fd166c Mon Sep 17 00:00:00 2001
From: Jeremy Cline <jcline@redhat.com>
Date: Thu, 14 May 2020 10:05:46 -0400
Subject: [PATCH] lockdown: Allow unprivileged users to see lockdown status
Git-commit: 60cf7c5ed5f7087c4de87a7676b8c82d96fd166c
Patch-mainline: v5.8-rc1
References: git-fixes
A number of userspace tools, such as systemtap, need a way to see the
current lockdown state so they can gracefully deal with the kernel being
locked down. The state is already exposed in
/sys/kernel/security/lockdown, but is only readable by root. Adjust the
permissions so unprivileged users can read the state.
Fixes: 000d388ed3bb ("security: Add a static lockdown policy LSM")
Cc: Frank Ch. Eigler <fche@redhat.com>
Signed-off-by: Jeremy Cline <jcline@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
security/lockdown/lockdown.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/security/lockdown/lockdown.c b/security/lockdown/lockdown.c
index 40b790536def..ae594c0a127f 100644
--- a/security/lockdown/lockdown.c
+++ b/security/lockdown/lockdown.c
@@ -175,7 +175,7 @@ static int __init lockdown_secfs_init(void)
{
struct dentry *dentry;
- dentry = securityfs_create_file("lockdown", 0600, NULL, NULL,
+ dentry = securityfs_create_file("lockdown", 0644, NULL, NULL,
&lockdown_ops);
return PTR_ERR_OR_ZERO(dentry);
}
--
2.31.1