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Re: [RFC][PATCH 00/12] Enhanced file stat system call

From Casey Schaufler <casey@schaufler-ca.com>
Newsgroups linux.kernel
Subject Re: [RFC][PATCH 00/12] Enhanced file stat system call
Date 2015-11-24 16:00 +0100
Message-ID <qyney-130-3@gated-at.bofh.it> (permalink)
References <qwVkl-6h-3@gated-at.bofh.it> <qwXcu-1li-25@gated-at.bofh.it> <qygZs-5z4-15@gated-at.bofh.it>
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On 11/24/2015 12:15 AM, Christoph Hellwig wrote:
> On Fri, Nov 20, 2015 at 08:50:22AM -0800, Casey Schaufler wrote:
>> How about relevant xattrs? SELinux context, ACL, that sort of thing.
>> The fact that these are optional should be taken care of by (4).
> Those are not simple, fixed size stat data and would make the system
> call a giant mess.
>
I didn't say it would be easy. I do think that adding a system call
that only deals with simple, fixed size data is going to fall short
of solving "the problem".

Actually, a Smack label is fixed size (256 bytes). I suspect there
is a maximum for SELinux contexts as well. ACLs I'll grant you are
infinite.

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Thread

[RFC][PATCH 00/12] Enhanced file stat system call David Howells <dhowells@redhat.com> - 2015-11-20 16:00 +0100
  [PATCH 04/12] statx: AFS: Return enhanced file attributes David Howells <dhowells@redhat.com> - 2015-11-20 16:00 +0100
  [PATCH 11/12] fsinfo: NFS: Return information through the  filesystem info syscall David Howells <dhowells@redhat.com> - 2015-11-20 16:00 +0100
  [PATCH 07/12] statx: CIFS: Return enhanced attributes David Howells <dhowells@redhat.com> - 2015-11-20 16:00 +0100
    Re: [PATCH 07/12] statx: CIFS: Return enhanced attributes Steve French <smfrench@gmail.com> - 2015-11-24 18:40 +0100
  [PATCH 01/12] Ext4: Fix extended timestamp encoding and decoding David Howells <dhowells@redhat.com> - 2015-11-20 16:00 +0100
    Re: [PATCH 01/12] Ext4: Fix extended timestamp encoding and decoding Andreas Dilger <adilger@dilger.ca> - 2015-11-24 18:40 +0100
    Re: [PATCH 01/12] Ext4: Fix extended timestamp encoding and decoding Theodore Ts'o <tytso@mit.edu> - 2015-11-24 20:40 +0100
      Re: [PATCH 01/12] Ext4: Fix extended timestamp encoding and decoding Arnd Bergmann <arnd@arndb.de> - 2015-11-24 21:20 +0100
        Re: [PATCH 01/12] Ext4: Fix extended timestamp encoding and decoding Theodore Ts'o <tytso@mit.edu> - 2015-11-29 03:50 +0100
          Re: [PATCH 01/12] Ext4: Fix extended timestamp encoding and decoding Arnd Bergmann <arnd@arndb.de> - 2015-11-29 22:40 +0100
            Re: [PATCH 01/12] Ext4: Fix extended timestamp encoding and decoding Theodore Ts'o <tytso@mit.edu> - 2015-11-30 15:20 +0100
              Re: [PATCH 01/12] Ext4: Fix extended timestamp encoding and decoding Arnd Bergmann <arnd@arndb.de> - 2015-11-30 15:40 +0100
              Re: [PATCH 01/12] Ext4: Fix extended timestamp encoding and decoding Elmar Stellnberger <estellnb@elstel.org> - 2015-11-30 16:00 +0100
      Re: [PATCH 01/12] Ext4: Fix extended timestamp encoding and decoding David Howells <dhowells@redhat.com> - 2015-11-26 16:30 +0100
  Re: [RFC][PATCH 00/12] Enhanced file stat system call Martin Steigerwald <martin@lichtvoll.de> - 2015-11-20 17:30 +0100
    Re: [RFC][PATCH 00/12] Enhanced file stat system call David Howells <dhowells@redhat.com> - 2015-11-20 17:30 +0100
      Re: [RFC][PATCH 00/12] Enhanced file stat system call Martin Steigerwald <martin@lichtvoll.de> - 2015-11-20 17:40 +0100
      Re: [RFC][PATCH 00/12] Enhanced file stat system call bfields@fieldses.org (J. Bruce Fields) - 2015-11-25 19:00 +0100
        Re: [RFC][PATCH 00/12] Enhanced file stat system call Andreas Dilger <adilger@dilger.ca> - 2015-11-25 20:40 +0100
    Re: [RFC][PATCH 00/12] Enhanced file stat system call Christoph Hellwig <hch@infradead.org> - 2015-11-24 09:20 +0100
      Re: [RFC][PATCH 00/12] Enhanced file stat system call Martin Steigerwald <martin@lichtvoll.de> - 2015-11-24 09:50 +0100
        Re: [RFC][PATCH 00/12] Enhanced file stat system call Christoph Hellwig <hch@infradead.org> - 2015-11-24 10:00 +0100
  Re: [RFC][PATCH 00/12] Enhanced file stat system call Casey Schaufler <casey@schaufler-ca.com> - 2015-11-20 18:00 +0100
    Re: [RFC][PATCH 00/12] Enhanced file stat system call Christoph Hellwig <hch@infradead.org> - 2015-11-24 09:20 +0100
      Re: [RFC][PATCH 00/12] Enhanced file stat system call Casey Schaufler <casey@schaufler-ca.com> - 2015-11-24 16:00 +0100
    Re: [RFC][PATCH 00/12] Enhanced file stat system call Andreas Dilger <adilger@dilger.ca> - 2015-11-24 17:30 +0100
  Re: [RFC][PATCH 00/12] Enhanced file stat system call Christoph Hellwig <hch@infradead.org> - 2015-11-24 09:20 +0100
    Re: [RFC][PATCH 00/12] Enhanced file stat system call David Howells <dhowells@redhat.com> - 2015-11-26 16:20 +0100
      Re: [RFC][PATCH 00/12] Enhanced file stat system call Andreas Dilger <adilger@dilger.ca> - 2015-11-26 23:10 +0100
  Re: [PATCH 03/12] statx: Add a system call to make enhanced file  info available Dave Chinner <david@fromorbit.com> - 2015-11-24 21:30 +0100

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