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| author | Bryan Schumaker <bjschuma@netapp.com> | 2011-03-23 15:04:31 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-03-23 15:14:27 -0400 |
| commit | 8ef2ce3e16d9bec6cf015207c1c82a5b864046ac (patch) | |
| tree | 35441fd695c4f5215ab0061d8df26b4cfd9a44f5 /include/linux/nfs_fs.h | |
| parent | 480c2006ebb44ae03165695db7b3e38c04e0d102 (diff) | |
| download | lwn-8ef2ce3e16d9bec6cf015207c1c82a5b864046ac.tar.gz lwn-8ef2ce3e16d9bec6cf015207c1c82a5b864046ac.zip | |
NFS: Detect loops in a readdir due to bad cookies
Some filesystems (such as ext4) can return the same cookie value for
multiple files. If we try to start a readdir with one of these cookies,
the server will return the first file found with a cookie of the same
value. This can cause the client to enter an infinite loop.
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/nfs_fs.h')
| -rw-r--r-- | include/linux/nfs_fs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 4b851a02f7f3..4179c368844b 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -100,6 +100,8 @@ struct nfs_open_context { struct nfs_open_dir_context { struct rpc_cred *cred; __u64 dir_cookie; + __u64 dup_cookie; + int duped; }; /* |