NFSv3: Fix another acl regression

When creating a new object on the NFS server, we should not be sending
posix setacl requests unless the preceding posix_acl_create returned a
non-trivial acl. Doing so, causes Solaris servers in particular to
return an EINVAL.

Fixes: 013cdf1088d72 (nfs: use generic posix ACL infrastructure,,,)
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1132786
Cc: stable@vger.kernel.org # 3.14+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c
index d0fec26..24c6898 100644 (file)
--- a/fs/nfs/nfs3acl.c
+++ b/fs/nfs/nfs3acl.c
@@ -129,7 +129,10 @@ static int __nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
                .rpc_argp       = &args,
                .rpc_resp       = &fattr,
        };
-       int status;
+       int status = 0;
+
+       if (acl == NULL && (!S_ISDIR(inode->i_mode) || dfacl == NULL))
+               goto out;
 
        status = -EOPNOTSUPP;
        if (!nfs_server_capable(inode, NFS_CAP_ACLS))