[Bug 1680224] [NEW] auto.smb fails on Windows administrative shares

[Mark A. Fox]

Public bug reported:

This is probably related to #385244.

I've been unable to get a Windows administrative share (ie. C$) mounted
through Autofs. Non-administrative shares work fine. Administrative
shares are accessible with the same credentials from other Windows 10
workstations and through smbclient on Ubuntu (16.04 LTS) machines.
Administrative shares can even be mounted using the same credentials via
mount on the command-line. However, autofs will not mount the same
shares, using the same credentials, on the same Ubuntu machine.

Administrative shares are listed under /cifs/WindowsHostName, but a cd
/cifs/WindowsHostname/C$ results in "-bash: cd: C$: No such file or
directory" from the shell and the following output from 'automount -f
-v':

-----
attempting to mount entry /cifs/WindowsHostname/C$
>> Retrying with upper case share name
>> mount error(6): No such device or address
>> Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
mount(generic): failed to mount //WindowsHostname/C\$ (type cifs) on /cifs/WindowsHostname/C$
failed to mount /cifs/WindowsHostname/C$
-----

Notice that mount complains of failing to mount 'C\$' rather than 'C$'.
If the bit of awk script that escapes the $ is removed, it then fails to
mount 'C', which is also no good. I think if we could actually get mount
to try to mount 'C$', it would work.

** Affects: autofs (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: autofs automount cifs

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https://bugs.launchpad.net/bugs/1680224

Title:
  auto.smb fails on Windows administrative shares

Status in autofs package in Ubuntu:
  New

Bug description:
  This is probably related to #385244.

  I've been unable to get a Windows administrative share (ie. C$)
  mounted through Autofs. Non-administrative shares work fine.
  Administrative shares are accessible with the same credentials from
  other Windows 10 workstations and through smbclient on Ubuntu (16.04
  LTS) machines. Administrative shares can even be mounted using the
  same credentials via mount on the command-line. However, autofs will
  not mount the same shares, using the same credentials, on the same
  Ubuntu machine.

  Administrative shares are listed under /cifs/WindowsHostName, but a cd
  /cifs/WindowsHostname/C$ results in "-bash: cd: C$: No such file or
  directory" from the shell and the following output from 'automount -f
  -v':

  -----
  attempting to mount entry /cifs/WindowsHostname/C$
  >> Retrying with upper case share name
  >> mount error(6): No such device or address
  >> Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
  mount(generic): failed to mount //WindowsHostname/C\$ (type cifs) on /cifs/WindowsHostname/C$
  failed to mount /cifs/WindowsHostname/C$
  -----

  Notice that mount complains of failing to mount 'C\$' rather than
  'C$'. If the bit of awk script that escapes the $ is removed, it then
  fails to mount 'C', which is also no good. I think if we could
  actually get mount to try to mount 'C$', it would work.

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