Date: Tue, 15 Sep 2009 22:53:15 +0200 From: Giulio Ferro <auryn@zirakzigil.org> To: freebsd-hackers@freebsd.org Subject: ZFS group ownership Message-ID: <4AAFFEBB.4030907@zirakzigil.org>
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I don't know if this is the correct list to discuss this matter, if not I apologize in advance. I've always understood group ownership as a way to allow members of the same group to operate on files / folders which belong to that group, while leaving out others. Let's suppose to have a directory /root/test (UFS file system) I do this: cd /root chmod -R 770 test chown -R www:www test (I use group www as an example, since it's already present on a base system) My user "gferro" also belongs to group www and has umask 007 su - gferro touch qweq mkdir asda If I watch now the file and directory I've just created: --------------------------------------------------------------- %ls -la total 6 drwxrwx--- 3 www www 512 Sep 12 13:39 . drwxr-xr-x 4 root wheel 512 Sep 12 13:02 .. drwxrwx--- 2 gferro www 512 Sep 12 13:39 asda -rw-rw---- 1 gferro www 0 Sep 12 13:38 qweq --------------------------------------------------------------- I see that both belongs to group www, even though gferro's base group is "gferro": --------------------------------------------------------------- id gferro uid=1001(gferro) gid=1001(gferro) groups=1001(gferro),80(www) --------------------------------------------------------------- This means that all those user's who belong to group "www" will be able to work with the files and directories I've created. Now I try to do the same on a zfs partition on the same machine This is what I see with ls --------------------------------------------------------------- ls -la total 4 drwxrwx--- 3 www www 4 Sep 12 13:43 . drwxr-xr-x 4 root wheel 4 Sep 12 13:43 .. drwxrwx--- 2 gferro gferro 2 Sep 12 13:43 asda -rw-rw---- 1 gferro gferro 0 Sep 12 13:43 qweq --------------------------------------------------------------- As you can see, both file and directory belongs now to "gferro" and not "www". This means that other users won't even be able to read my files / dir, let alone modify them. What I ask now is: is this a bug or a feature? How can I achieve my goal in ZFS, that is allowing members of the same group to operate with the files / dirs they create? Thanks in advance.
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