[Samba] tuning permissions

[Patrick Goetz]

Here is a share:

root at data2:/data# ls -ld share
drwxrws--- 3 root ea-staff 4096 Nov  5 13:39 share


Permissions are set to 2770.  Based on my reading of the Wiki, group 
sticky bits are supposed to be honored, but when I have a test user save 
a file to this folder from a W10 client, it just ends up being owned by 
the default group:

root at data2:/data/share# ls -l D*
-rwxrwx---+ 1 dhales domain users 233 Nov  5 13:39 Davids-document.rtf

root at data2:/data/share# getfacl Davids-document.rtf
# file: Davids-document.rtf
# owner: dhales
# group: domain\040users
user::rwx
user:domain\040users:rwx
group::rwx
group:domain\040users:rwx
group:dhales:rwx
mask::rwx
other::---


Presumably there is a way to force the group on a file/folder creation 
without resorting to POSIX ACLs, or do I need to set a default ACL to 
make this work?


Second question: This might not be possible, but ideally when user B 
edits and saves a file owned by user A, I want the ownership of the file 
to change to A so that we can determine who last touched a file when an 
edit goes wrong.