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Subject[PATCH 21/30] NFS: Secure the roots of the NFS subtrees in a shared superblock [try #11]
Date
Invoke security_d_instantiate() on root dentries after allocating them with
dentry_alloc_anon(). Normally dentry_alloc_root() would do that, but we don't
call that as we don't want to assign a name to the root dentry at this point
(we may discover the real name later).

Signed-Off-By: David Howells <dhowells@redhat.com>
---

fs/nfs/getroot.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index 977e590..76b08ae 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -33,6 +33,7 @@ #include <linux/nfs_idmap.h>
#include <linux/vfs.h>
#include <linux/namei.h>
#include <linux/namespace.h>
+#include <linux/security.h>

#include <asm/system.h>
#include <asm/uaccess.h>
@@ -109,6 +110,8 @@ struct dentry *nfs_get_root(struct super
return ERR_PTR(-ENOMEM);
}

+ security_d_instantiate(mntroot, inode);
+
if (!mntroot->d_op)
mntroot->d_op = server->nfs_client->rpc_ops->dentry_ops;

@@ -296,6 +299,8 @@ struct dentry *nfs4_get_root(struct supe
return ERR_PTR(-ENOMEM);
}

+ security_d_instantiate(mntroot, inode);
+
if (!mntroot->d_op)
mntroot->d_op = server->nfs_client->rpc_ops->dentry_ops;

-
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