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lockdown: Allow unprivileged users to see lockdown status 

[ Upstream commit 60cf7c5ed5 ]

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: 000d388ed3 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Jeremy Cline 2020-05-14 10:05:46 -04:00 committed by Greg Kroah-Hartman
parent 00f73938ef
commit 6eec65c9e2
1 changed files with 1 additions and 1 deletions
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security/lockdown/lockdown.c
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@ -177,7 +177,7 @@ 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);
}