Files app cannot copy files to SMB share on LINUX SOLVED

I had this problem and noticed it after upgrade to IOS 14.5 on iPhone 6 SE and iPadPro .

What happened I could not transfer files anymore to a smb share out of some apple app's.

It did not worked out of photo app and files app.

It did worked out off goodreader and Mail.

I could well transfer to a smb share on my MacBookPro out off all app's.

The fault is not the IOS of apple. But there have been many changes on the samba servers used on windows and linux since samba server version 4 and higher. These are all related to the read write file acces routine and they are done to increase security. It was really needed. A lot of apple app's are upgraded to the new security standards but some app's not yet.

How to solve ?

On the linux system you will need to ad a couple of lines in you're smb.conf file located in path /etc/samba . The changes are :

By section global at the end ad fruit:nfs_aces = no

By section share ad vfs objects = catia fruit streams_xattr

example smb.conf which works. in text