I’ve started using Visual Studio 2017 community edition to load up a project stored in a ubuntu 16.04 server running as a hyperV virtual machine. The project files are accessed via a samba share and I find the visual studio sets the execute bit when I edit and save a file even though my /etc/samba/smb.conf has the following settings in the global section:
map archive = no
map system = no
map hidden = no
force create mode = 0660
It wasn’t until I added nt acl support = no that I was able to stop the execute bit getting set editing a file in visual studio.
note : restarting samba on ubuntu 16.04 doesn’t use usual service smbd restart call. Do this : sudo systemctl restart smbd.service nmbd.service
https://www.samba.org/samba/docs/using_samba/ch08.html
https://www.samba.org/samba/docs/man/manpages-3/smb.conf.5.html