From: Jeff Layton <jlayton@redhat.com>
Date: Wed, 21 Mar 2012 13:52:09 +0000 (-0400)
Subject: nfsd: don't allow legacy client tracker init for anything but init_net
X-Git-Tag: upstream/snapshot3+hdmi~7817^2~6
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cc27e0d407021a278d08c1952f5af4ab38c49eda;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

nfsd: don't allow legacy client tracker init for anything but init_net

This code isn't set up for containers, so don't allow it to be
used for anything but init_net.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---

diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 6f13281..21b53d5 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -416,6 +416,13 @@ nfsd4_load_reboot_recovery_data(struct net *net)
 {
 	int status;
 
+	/* XXX: The legacy code won't work in a container */
+	if (net != &init_net) {
+		WARN(1, KERN_ERR "NFSD: attempt to initialize legacy client "
+			"tracking in a container!\n");
+		return -EINVAL;
+	}
+
 	nfs4_lock_state();
 	status = nfsd4_init_recdir();
 	if (!status)