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I'm running on Ubuntu Server 12.04. I have a folder called Music and I want the default folder permissions to be 775 and the default file to then be 664.

I set the default permissions on the Music folder to be 775.

I configured ACL to use these default permissions as well:

# file: Music
# owner: kris
# group: kris
# flags: ss-

I also changed the default umask for my user account, kris, to 002 in .profile.

Shouldn't and new file/folder now use those permissions when writing to the Samba share? ACL should work with Samba from what I can gather.

Currently, if I write to that folder using my mac, folders are getting 755 and files 644. I have another app on my mac called GoodSync which which is able to sync a local directory on my mac to a network samba share, but those permissions are even worse. files are being written as 700 using that program.

So it looks like Samba is allowing the host/program to determine the folder/file permissions.

What changes do I need to make to force the permissions I want regardless of what the host tries to write on the server?

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2 Answers 2

Finally figured this one out.

You need to modify the /etc/samba/smb.conf file. For my Music share, I added the following options:

create mask = 664
force create mode = 664
security mask = 664
force security mode = 664
directory mask = 2775
force directory mode = 2775
directory security mask = 2775
force directory security mode = 2775

I'm not sure which one of those actually fixed the issue, but it is writing the correct permissions now when sharing via Samba. I think it's the "force" command being used since the Mac is likely trying to force it's own permissions on the share (and now Ubuntu is forcing it's own permissions instead of accepting my Mac's). Hopefully that helps someone!

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The following entries worked for me:

force security mode = 664
force directory security mode = 775
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