[Samba] Strange logs: check_usershare_stat: file /var/lib/samba/usershares/ owned by uid 0 is not a regular file

[Jeremy Allison]

On Tue, Dec 01, 2020 at 10:46:05PM +0000, Rowland penny via samba wrote:
>On 01/12/2020 22:35, Jeremy Allison wrote:
>>On Tue, Dec 01, 2020 at 10:32:32PM +0000, Rowland penny via samba wrote:
>>>On 01/12/2020 22:23, Andrew Bartlett wrote:
>>>>On Tue, 2020-12-01 at 14:19 -0800, Jeremy Allison via samba wrote:
>>>>>On Tue, Dec 01, 2020 at 10:08:34PM +0000, Rowland penny via samba
>>>>>wrote:
>>>>>
>>>>>>could this have anything to do with it:
>>>>>>
>>>>>>4.12.0
>>>>>>Default: usershare max shares = 0
>>>>>>
>>>>>>4.13.2
>>>>>>Default: usershare max shares = 100
>>>>>Good catch. Yes, that would cause
>>>>>the usershare load path to be executed
>>>>>now whereas it wasn't before.
>>>>Even if we didn't change the default, Debian does.  But the code should
>>>>work of course, be it enabled by default or by the administrator...
>>>>
>>>>Andrew Bartlett
>>>
>>>Yes, it is Debian, just found this out by downloading the relevant 
>>>file from Louis's repo, they appear to be turning usershares on 
>>>without actually setting up usershares. I would suggest the code 
>>>would work if usershares were actually set up correctly, I have 
>>>used usershares in the past and I don't remember syslog getting 
>>>spammed.
>>
>>Well I still don't know why he's seeing syslog spam from
>>an empty usershare directory. That shouldn't happen even
>>if the code is going down the usershare path now.
>
>He is not alone, I didn't know I had a problem until I checked syslog, 
>my lines are bit different:
>
>Dec  1 09:14:25 raspberrypi smbd[21036]: [2020/12/01 09:14:25.671948,  
>0] ../../source3/param/loadparm.c:3422(process_usershare_file)
>Dec  1 09:14:25 raspberrypi smbd[21036]:   process_usershare_file: 
>stat of /var/lib/samba/usershares/profiles.v6 failed. Permission 
>denied

Hang on a minute - the above says "Permission denied"
for "/var/lib/samba/usershares/profiles.v6"

That means the directory scanner found something
inside:

/var/lib/samba/usershares

>Dec  1 09:14:25 raspberrypi smbd[21036]: [2020/12/01 09:14:25.676259,  
>0] ../../source3/param/loadparm.c:3422(process_usershare_file)
>Dec  1 09:14:25 raspberrypi smbd[21036]:   process_usershare_file: 
>stat of /var/lib/samba/usershares/profiles.v6 failed. No such file or 
>directory

Now it says "No such file or directory" for
"/var/lib/samba/usershares/profiles.v6"

Which is right ?