lkml.org 
[lkml]   [2014]   [Jul]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH 1/1] Fix permission checking by NFS client for open-create with mode 000
From
On Wed, Jul 09, 2014 at 07:12:09PM -0400, Trond Myklebust wrote:
> Oops. Sorry, the correct sub-sub-sub-sub-....paragraph is this one:
>
> Permission to execute a file.
>
> Servers SHOULD allow a user the ability to read the data of the
> file when only the ACE4_EXECUTE access mask bit is allowed.
> This is because there is no way to execute a file without
> reading the contents. Though a server may treat ACE4_EXECUTE
> and ACE4_READ_DATA bits identically when deciding to permit a
> READ operation, it SHOULD still allow the two bits to be set
> independently in ACLs, and MUST distinguish between them when
> replying to ACCESS operations. In particular, servers SHOULD
> NOT silently turn on one of the two bits when the other is set,
> as that would make it impossible for the client to correctly
> enforce the distinction between read and execute permissions.
>
>
> > To me that translates as saying that the server SHOULD accept an
> > OPEN(SHARE_ACCESS_READ|SHARE_ACCESS_WRITE) request in the above
> > situation.
>
> Same conclusion, though....

Are we sure that's not just a spec bug?

Allowing OPEN(BOTH) on a -wx file seems like a pretty weird result.

--b.


\
 
 \ /
  Last update: 2014-07-12 00:01    [W:0.239 / U:0.100 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site