'su lyx' changes file access privileges

[paolo m.]

Kornel Benko wrote:

> Am Sun, 27 Sep 2020 14:03:44 +0200
> schrieb "paolo m. " <paolo.pumilia at gmail.com>:
> 
>> Kornel Benko wrote:
>> 
>> > Am Sun, 27 Sep 2020 13:19:52 +0200
>> > schrieb "paolo m." <paolo.pumilia at gmail.com>:
>> >   
>> >> Sometimes, while  in user1 session, I find convenient launching lyx as
>> >> user2
>> >> (same group as user1)  to open a lyx file, through 'su'.
>> >> As user2 changes and save that file, access privileges are changed as
>> >> well. That does not happen when a text file is opened by kwrite, so it
>> >> should be something specific to lyx.
>> >>  
>> >> Before 'su' switch:
>> >> text file     x            -rw-rw-r--
>> >> lyx file     xx.lyx        -rw-rw-r--
>> >> 
>> >> Switching and modifying file x (by  kwrite)  and xx.lyx (by lyx):
>> >>               x          -rw-rw-r--
>> >>               xx.lyx     -rw-------
>> >> 
>> >> (Same results when  launching 'dolphin' file manager as user2 to open
>> >> a lyx file, through 'su'').
>> >>   
>> > 
>> > Have you checked the setting of 'umask' for both users?
>> > 
>> > Kornel
>> Yes, umask is set in /etc/zshenv;  kwrite complies with that
>> specification Maybe lyx reads a different umask setting?
>> 
>> thanks
>> 
>> p.
>> 
> 
> Hm, I meant the output of the command 'umask'.
> Maybe it is set be /etc/zshenv, but there may be different handling (like
> include of user specific file).
> 
>  Here it is for example
>  $ umask
> 22
> 
> Kornel

Umask is the same for both users: 
% umask
 002
 

% grep -i umask /etc/zshenv
  umask u=rwx,g=rwx,o=rx 


p.