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Home » Mailing list archives » linux-fsdevel » 2008 » February » 28

Re: [PATCH 05/11] NFSv4: Add label recommended attribute and NFSv4 flags

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From: James Morris <jmorris@...>
To: David P. Quigley <dpquigl@...>
Cc: <hch@...>, <viro@...>, <trond.myklebust@...>, <bfields@...>, <linux-kernel@...>, <linux-fsdevel@...>
Subject: Re: [PATCH 05/11] NFSv4: Add label recommended attribute and NFSv4 flags
Date: Wednesday, February 27, 2008 - 9:52 pm

On Wed, 27 Feb 2008, David P. Quigley wrote:


I remember raising this before, but I think we need to try and find a 
better way to implement this than always allocating labels of a fixed and 
possibly too-small size.

What about perhaps starting with a statically allocated array of say 64 
bytes (I can't see any labels on my system larger than that), and then 
falling back to a a dynamic allocation of up to 32k if it turns out to be 
too small ?  i.e. large labels are a slow path and there is no practical 
limit on label size.


- James
-- 
James Morris
<jmorris@namei.org>
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Messages in current thread:
RFC Labeled NFS Initial Code Review, David P. Quigley, (Wed Feb 27, 6:11 pm)
Re: RFC Labeled NFS Initial Code Review, Dave Quigley, (Wed Feb 27, 9:23 pm)
Re: RFC Labeled NFS Initial Code Review, Dave Quigley, (Wed Feb 27, 8:48 pm)
[PATCH 08/11] NFS: Introduce lifecycle management for label ..., David P. Quigley, (Wed Feb 27, 6:11 pm)
Re: [PATCH 08/11] NFS: Introduce lifecycle management for la..., Dave Quigley, (Thu Feb 28, 12:46 pm)
Re: [PATCH 08/11] NFS: Introduce lifecycle management for la..., James Morris, (Thu Feb 28, 12:13 am)
Re: [PATCH 08/11] NFS: Introduce lifecycle management for la..., Dave Quigley, (Thu Feb 28, 12:24 pm)
[PATCH 07/11] NFS/SELinux: Add security_label text mount opt..., David P. Quigley, (Wed Feb 27, 6:11 pm)
Re: [PATCH 07/11] NFS/SELinux: Add security_label text mount..., Eric Paris, (Thu Feb 28, 10:22 am)
[PATCH 06/11] SELinux: Add new labeling type native labels, David P. Quigley, (Wed Feb 27, 6:11 pm)
[PATCH 05/11] NFSv4: Add label recommended attribute and NFS..., David P. Quigley, (Wed Feb 27, 6:11 pm)
Re: [PATCH 05/11] NFSv4: Add label recommended attribute and..., James Morris, (Wed Feb 27, 9:52 pm)
Re: [PATCH 05/11] NFSv4: Add label recommended attribute and..., Stephen Smalley, (Thu Feb 28, 9:55 am)
Re: [PATCH 05/11] NFSv4: Add label recommended attribute and..., Dave Quigley, (Wed Feb 27, 9:45 pm)
[PATCH 04/11] KConfig: Add KConfig entries for SELinux label..., David P. Quigley, (Wed Feb 27, 6:11 pm)
[PATCH 03/11] VFS: Add security label support to *notify, David P. Quigley, (Wed Feb 27, 6:11 pm)
Re: [PATCH 03/11] VFS: Add security label support to *notify, Christoph Hellwig, (Thu Feb 28, 7:54 pm)
Re: [PATCH 03/11] VFS: Add security label support to *notify, Dave Quigley, (Thu Feb 28, 7:44 pm)
Re: [PATCH 03/11] VFS: Add security label support to *notify, Christoph Hellwig, (Thu Feb 28, 8:23 pm)
Re: [PATCH 03/11] VFS: Add security label support to *notify, Dave Quigley, (Fri Feb 29, 4:19 pm)
Re: [PATCH 03/11] VFS: Add security label support to *notify, Dave Quigley, (Thu Feb 28, 9:52 pm)
Re: [PATCH 03/11] VFS: Add security label support to *notify, Dave Quigley, (Thu Feb 28, 8:06 pm)
Re: [PATCH 03/11] VFS: Add security label support to *notify, James Morris, (Wed Feb 27, 9:20 pm)
Re: [PATCH 03/11] VFS: Add security label support to *notify, Dave Quigley, (Thu Feb 28, 12:07 pm)
[PATCH 02/11] Security: Add hook to calculate context based ..., David P. Quigley, (Wed Feb 27, 6:11 pm)
[PATCH 01/11] Security: Add hook to get full maclabel xattr ..., David P. Quigley, (Wed Feb 27, 6:11 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Dave Quigley, (Fri Feb 29, 5:50 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Wed Feb 27, 7:42 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Dave Quigley, (Wed Feb 27, 8:12 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Wed Feb 27, 9:07 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Stephen Smalley, (Thu Feb 28, 9:43 am)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Thu Feb 28, 3:23 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Stephen Smalley, (Thu Feb 28, 3:30 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Christoph Hellwig, (Thu Feb 28, 7:48 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Stephen Smalley, (Fri Feb 29, 9:31 am)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Fri Feb 29, 1:52 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Dave Quigley, (Thu Feb 28, 8:04 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., James Morris, (Thu Feb 28, 9:15 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Thu Feb 28, 9:04 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Dave Quigley, (Thu Feb 28, 8:52 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Thu Feb 28, 10:29 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Dave Quigley, (Thu Feb 28, 10:09 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Christoph Hellwig, (Thu Feb 28, 8:39 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Dave Quigley, (Thu Feb 28, 8:32 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Thu Feb 28, 9:47 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., James Morris, (Thu Feb 28, 10:15 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Dave Quigley, (Thu Feb 28, 9:33 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Christoph Hellwig, (Thu Feb 28, 9:00 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Stephen Smalley, (Fri Feb 29, 9:30 am)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Stephen Smalley, (Fri Feb 29, 10:45 am)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Dave Quigley, (Thu Feb 28, 8:42 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Thu Feb 28, 10:07 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Dave Quigley, (Thu Feb 28, 9:48 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Trond Myklebust, (Thu Feb 28, 8:50 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Thu Feb 28, 9:26 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Trond Myklebust, (Fri Feb 29, 1:01 am)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Fri Feb 29, 1:26 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Christoph Hellwig, (Thu Feb 28, 8:51 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Trond Myklebust, (Thu Feb 28, 9:00 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Thu Feb 28, 9:55 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Trond Myklebust, (Fri Feb 29, 1:04 am)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Fri Feb 29, 1:46 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Trond Myklebust, (Fri Feb 29, 2:28 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Fri Feb 29, 2:52 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Trond Myklebust, (Fri Feb 29, 3:50 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Fri Feb 29, 5:07 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Trond Myklebust, (Fri Feb 29, 8:09 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Fri Feb 29, 8:41 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Dave Quigley, (Fri Feb 29, 5:00 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Fri Feb 29, 6:27 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Dave Quigley, (Fri Feb 29, 6:15 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Fri Feb 29, 6:58 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Thu Feb 28, 3:59 pm)
[PATCH 11/11] NFSD: Server implementation of MAC Labeling, David P. Quigley, (Wed Feb 27, 6:11 pm)
Re: [PATCH 11/11] NFSD: Server implementation of MAC Labeling, James Morris, (Wed Feb 27, 9:46 pm)
[PATCH 10/11] NFS: Extend nfs xattr handlers to accept the s..., David P. Quigley, (Wed Feb 27, 6:11 pm)
[PATCH 09/11] NFS: Client implementation of Labeled-NFS, David P. Quigley, (Wed Feb 27, 6:11 pm)

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