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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-02-22 15:44:32 -0800 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-03-11 15:39:27 -0500 |
| commit | b064eca2cf6440bf9d5843b24cc4010624031694 (patch) | |
| tree | f1024db40bf0afb7b764d6ee825d24cd715d1cc5 /fs/nfs/client.c | |
| parent | 3ddeb7c5c61d0d6bfd837487d3454ffdb788bb91 (diff) | |
| download | lwn-b064eca2cf6440bf9d5843b24cc4010624031694.tar.gz lwn-b064eca2cf6440bf9d5843b24cc4010624031694.zip | |
NFSv4: Send unmapped uid/gids to the server when using auth_sys
The new behaviour is enabled using the new module parameter
'nfs4_disable_idmapping'.
Note that if the server rejects an unmapped uid or gid, then
the client will automatically switch back to using the idmapper.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/client.c')
| -rw-r--r-- | fs/nfs/client.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 6dd50ac5b545..139be9647d80 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -82,6 +82,11 @@ retry: #endif /* CONFIG_NFS_V4 */ /* + * Turn off NFSv4 uid/gid mapping when using AUTH_SYS + */ +static int nfs4_disable_idmapping = 0; + +/* * RPC cruft for NFS */ static struct rpc_version *nfs_version[5] = { @@ -1567,6 +1572,13 @@ static int nfs4_init_server(struct nfs_server *server, if (error < 0) goto error; + /* + * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower + * authentication. + */ + if (nfs4_disable_idmapping && data->auth_flavors[0] == RPC_AUTH_UNIX) + server->caps |= NFS_CAP_UIDGID_NOMAP; + if (data->rsize) server->rsize = nfs_block_size(data->rsize, NULL); if (data->wsize) @@ -1984,3 +1996,7 @@ void nfs_fs_proc_exit(void) } #endif /* CONFIG_PROC_FS */ + +module_param(nfs4_disable_idmapping, bool, 0644); +MODULE_PARM_DESC(nfs4_disable_idmapping, + "Turn off NFSv4 idmapping when using 'sec=sys'"); |