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lockdown: Allow unprivileged users to see lockdown status

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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>
This commit is contained in:
Jeremy Cline 2020-05-14 10:05:46 -04:00 committed by James Morris
parent 3e27a33932
commit 60cf7c5ed5
1 changed files with 1 additions and 1 deletions
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2
security/lockdown/lockdown.c
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@ -175,7 +175,7 @@ static int __init lockdown_secfs_init(void)
{ {
struct dentry *dentry; struct dentry *dentry;
dentry = securityfs_create_file("lockdown", 0600, NULL, NULL, dentry = securityfs_create_file("lockdown", 0644, NULL, NULL,
&lockdown_ops); &lockdown_ops);
return PTR_ERR_OR_ZERO(dentry); return PTR_ERR_OR_ZERO(dentry);
} }