I can trace the origins of this this back to about 10 June 2024. I have a user set up to specifically post cctv images, via ftp, to a shared folder. After that date it appears the user ceased to post pictures successfully. The actual system login can be seen as successful but no files were added to the system. {This covers 4 cameras each trying to post an image every 120 seconds}.
I realised this a few days ago but was tied up with other matters. I went into the system as Admin-user. Attempted to modify folder permissions via the GUI using both the shared folder control and the File Manager Control. In both cases permissions modifications were recorded as 'successful' but, in reality, nothing changed. Even after a reboot. Even after an update to 5.1.145 as of this morning.
My suspicion is that, maybe, the shared folder was established using group permission (I don't remember), but I cannot see why the admin-user cannot change that using the GUI. I could see this shared folder via the GUI and could change permissions (chgrp, chown, etc) but this did not change the abilities via GUI. Thence, I suppose ACLs are modifying behaviour but this still does not explain the inability to modify as admin-user via GUI. {I will confess ACLs are still a 'conceptual confusion' for me!
)My quick solution was to create a new shared folder (on a different Volume) based on user permission and move all sub-folders and files (some 60,000 files!) to to the new shared folder. I then deleted the old shared folder. In the meantime I was able to check the acl ('getfacl') via cli and noted that the output from the 'group' created shared folder was significantly different from that of the 'user' created shared folder.
The solution worked in that the cameras are now uploading images correctly and, logging in as the camera-user, I see just that shared folder as would be expected. I have yet to test creating/modifying folders in other ways which would depend in some respects on any feedback received.
Thanks for reading
