NFS: Off-by-one length error in string handling

The hostname was getting truncated in the new text-based NFS mount API.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 9cd0828..ef36432 100644 (file)
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -1153,7 +1153,7 @@ static int nfs_validate_mount_data(struct nfs_mount_data **options,
                c = strchr(dev_name, ':');
                if (c == NULL)
                        return -EINVAL;
-               len = c - dev_name - 1;
+               len = c - dev_name;
                if (len > sizeof(data->hostname))
                        return -EINVAL;
                strncpy(data->hostname, dev_name, len);