Hi, I have a raspberry pi running on debian set up as a file server and seedbox, with Samba sharing my ext4-formatted external hard drive on my network. I recently re-formatted the hard drive from ExFAT to Ext4, and now I'm having a problem with file permissions when I transfer over from my Mac to my RPi from my file share. Every new file I transfer over looks like this when I use ls -l:

-rw-r--r-- 1 pi pi

the owner and group are correct, but I want the permission to be

rwxrwsr-x pi pi

I can change the file to the correct permissions, using chmod, but every time I move over a new file, the new file has these very restrictive permissions. Is there any way I can make it so it defaults to different permissions? I'd like it to automatically be 775.

If you're using rsync, you should be able to preserve the permissions of the original file(s) with the -P option.

What program are you using to transfer the files?

I only have superficial knowledge of this, but you should be able to configure this in /etc/samba/smb.conf. Go to the samba.org site and find documentation about default file permissions.