• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: Where is the "Ignore ownership on this volume" bit?
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Where is the "Ignore ownership on this volume" bit?


  • Subject: Re: Where is the "Ignore ownership on this volume" bit?
  • From: Bucanek James <email@hidden>
  • Date: Tue, 26 Aug 2008 08:05:56 -0700


On Aug 26, 2008, at 1:47 AM, Quinn wrote:

At 11:37 -0700 25/8/08, Bucanek James wrote:
Well, I'm not sure that does make sense. If I install an OS on an external drive and then plug it into a different system, I would have expected the volume's "Ignore ownership" property to follow it.

The problem is that the ownership (that is, the values stored in the user and group ID fields of the file system objects on the volume) depends on the directory store, and the directory store is tied to the boot volume (except in managed environments). To continue your example, imagine that, when you installed the OS on your "external drive", the initial admin user was "Test" but the initial admin user on your "different system" was "James". Both of these get user ID 501, and that's what written to "/User/test" on the "external drive". Are these intended to be the same user? The system doesn't know for sure, so we leave it up to the user to decide. Passing the buck to the user is a cop out, but a non-cop out solution is hard.

Very sensible.

Ah, your initial post talked about changing the setting.

Detecting AND changing it would have been the ideal. But I'll take just detecting it.


 Detecting the setting is easy:

<x-man-page://2/statfs> > f_flags > MNT_IGNORE_OWNERSHIP

Sweet! Thanks a million.

James


_______________________________________________ Do not post admin requests to the list. They will be ignored. Filesystem-dev mailing list (email@hidden) Help/Unsubscribe/Update your Subscription: This email sent to email@hidden
References: 
 >Where is the "Ignore ownership on this volume" bit? (From: Bucanek James <email@hidden>)
 >Re: Where is the "Ignore ownership on this volume" bit? (From: Quinn <email@hidden>)
 >Re: Where is the "Ignore ownership on this volume" bit? (From: Bucanek James <email@hidden>)
 >Re: Where is the "Ignore ownership on this volume" bit? (From: Quinn <email@hidden>)

  • Prev by Date: Re: Where is the "Ignore ownership on this volume" bit?
  • Next by Date: Re: FSCopyObjectSync and Samba, error -54
  • Previous by thread: Re: Where is the "Ignore ownership on this volume" bit?
  • Next by thread: file locking: fcntl vs. flock
  • Index(es):
    • Date
    • Thread