How to add _www to folder ACL?

Hi,

I'm using Lion and am trying to modify my ACL for a folder within Finder to share with the apache2 user _www . I have opened the Properties window, and expanded the Sharing & Permissions section, but I do not see any of the system groups or users appear. I realize that it is a system defined user, but I still expected to have an option to add it to my ACL.

I realize that I could change the POSIX group ownership/rights at the command line using `chmod`, but it would seem fairly restrictive that I cannot modify file rights from within the GUI. Moreover, that does not give me finely grained access rights as I have to modify the group structure.

Is there no way to share a folder with _www via ACLs? That seems extremely short sighted. I've searched for an option to display system users/groups in the System Preferences, but cannot seem to find an option anywhere.

Thanks,

Eric

MacBook Pro, Mac OS X (10.7.3)

Posted on Dec 3, 2012 9:02 AM

17 replies

BobHarris

Level 9

56,819 points

Dec 4, 2012 9:45 AM in response to baltwo

How? The only thing I see when clicking on the Privilege line is the various R&W ones. Where or how are ACLs added? That's the part that's missing for me.

Click on Plus [+], and select the user from the list of valid users on your system.

You can then play with privileges of "Read" or "Write"

Again, this is a limited interface to ACLs. It will not allow you to assign any user or group, just the ones that the Mac OS X GUI for "Mom and Dad" allows. Everything else, go to the command line, or get a 3rd party app.

baltwo

Level 9

62,386 points

Dec 4, 2012 1:58 PM in response to BobHarris

Therein lies the rub. It's my understanding that normal privileges; i.e., owner, group, and other aren't ACLs. Those are additional and need chmod or a 3rd-party app, such as BatchMod or TinkerTool System to play around with them. Also, the Server Admin Tools might allow access and setting to those.

Thanks, anyway. I'm no longer confused. 😉

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How to add _www to folder ACL?