[PATCH][SMB3] allow files to be created with backslash in file name

[Jeremy Allison]

On Fri, Jan 01, 2021 at 09:12:14AM -0600, Steve French wrote:
>On Fri, Jan 1, 2021 at 12:00 AM Jeremy Allison <jra at samba.org> wrote:
>>
>> On Thu, Dec 31, 2020 at 09:35:23PM -0600, Steve French via samba-technical wrote:
>> >
>> >This patch may be even more important to Samba, as alternative ways of
>> >storing these files can create more problems. Interestingly Samba
>> >server reports local files with backslashes in them over the wire
>> >without remapping, even though these are illegal in SMB3 which would
>> >cause confusion on the client(s).  Has anyone tried Windows mounting
>>
>> Samba should mangle names containing '\' to 8.3 names.
>
>You were right mangled names was enabled.  But that is also
>interesting - it does expose a bug in smbclient.
>
>When you connect smbclient - doing a ls of a subdirectory with
>reserved characters worked, but doing an ls of the parent (root
>directory of share) caused smbclient to disconnect.  See below
>
>smb: \> ls rsvd-chars
>  rsvd-chars                          D        0  Fri Jan  1 08:55:49 2021
>
>556368460 blocks of size 1024. 296010296 blocks available
>smb: \> ls
>  .                                   D        0  Fri Jan  1 08:54:28 2021
>  ..                                  D        0  Thu Dec 31 21:42:28 2020
>  topdir                              D        0  Mon Dec 14 16:01:25 2020
>  lock1.txt                           A      200  Fri Dec 18 12:28:18 2020
>  lock_rw_shared.dat                  A      200  Fri Dec 18 12:28:18 2020
>  lock_rw_exclusive.dat               A      200  Fri Dec 18 12:28:18 2020
>  autounlock.txt                      A      200  Fri Dec 18 12:28:18 2020
>is_bad_finfo_name: bad finfo->name
>NT_STATUS_INVALID_NETWORK_RESPONSE listing \*
>smb: \> SMBecho failed (NT_STATUS_CONNECTION_DISCONNECTED). The
>connection is disconnected now

Can you log a bug please and give full setup instructions
to reproduce. This isn't enough to show me what the bug is.
I need a directory listing from the Server side to show
me what files are in the root of the share.

Also, you neglect to tell me what Samba version you are
using (which is a pre-requisite for a bug report Steve,
you know this :-).