From: Chuck Lever Date: Sat, 16 Mar 2013 19:55:36 +0000 (-0400) Subject: NFS: Handle missing rpc.gssd when looking up root FH X-Git-Tag: submit/tizen_common/20140905.094502~2933^2~9^2~11 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=75bc8821bd9ae76f2ffb92a46f7abdbb0aaa0536;p=sdk%2Femulator%2Femulator-kernel.git NFS: Handle missing rpc.gssd when looking up root FH When rpc.gssd is not running, any NFS operation that needs to use a GSS security flavor of course does not work. If looking up a server's root file handle results in an NFS4ERR_WRONGSEC, nfs4_find_root_sec() is called to try a bunch of security flavors until one works or all reasonable flavors have been tried. When rpc.gssd isn't running, this loop seems to fail immediately after rpcauth_create() craps out on the first GSS flavor. When the rpcauth_create() call in nfs4_lookup_root_sec() fails because rpc.gssd is not available, nfs4_lookup_root_sec() unconditionally returns -EIO. This prevents nfs4_find_root_sec() from retrying any other flavors; it drops out of its loop and fails immediately. Having nfs4_lookup_root_sec() return -EACCES instead allows nfs4_find_root_sec() to try all flavors in its list. Signed-off-by: Chuck Lever Cc: Bryan Schumaker Signed-off-by: Trond Myklebust --- diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 8134394..f462dd8 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2506,7 +2506,7 @@ static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandl auth = rpcauth_create(flavor, server->client); if (IS_ERR(auth)) { - ret = -EIO; + ret = -EACCES; goto out; } ret = nfs4_lookup_root(server, fhandle, info);