misleading error message if cifs-utils not installed

[Stefan Helmert]

On Ubuntu 16.04.2: If cifs-utils is not installed the following command gives error messages making no sense:

sudo mount -t cifs -o credentials=~/.credentials //192.168.1.2/austausch /media/austausch

The message is:

mount: wrong fs type, bad option, bad superblock on //192.168.1.2/austausch,
       missing codepage or helper program, or other error
       (for several filesystems (e.g. nfs, cifs) you might
       need a /sbin/mount.<type> helper program)

       In some cases useful info is found in syslog - try
       dmesg | tail or so.

The dmesg output is:

[2408337.346794] CIFS VFS: No username specified

But the username is specified in .credentials. It should better say: "cifs-utils needed, but not installed - Install it now? [Y/n]"

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: mount 2.27.1-6ubuntu3.2
ProcVersionSignature: Ubuntu 4.4.0-81.104-generic 4.4.67
Uname: Linux 4.4.0-81-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.6
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Jun 29 13:25:41 2017
SourcePackage: util-linux
UpgradeStatus: No upgrade log present (probably fresh install)

[Phillip Susi (psusi)]

That's not something that mount is going to do.