From: Rob Landley <rob@landley.net>
To: user-mode-linux-devel@lists.sourceforge.net
Cc: Blaisorblade <blaisorblade@yahoo.it>
Subject: Re: [uml-devel] Hostfs permission checks are all wonky.
Date: Wed, 23 Mar 2005 03:13:04 -0500 [thread overview]
Message-ID: <200503230313.06299.rob@landley.net> (raw)
In-Reply-To: <200503222019.10709.blaisorblade@yahoo.it>
On Tuesday 22 March 2005 02:19 pm, Blaisorblade wrote:
> Ok, I'm now seeing that UML uses access() (inside access_file()) to check
> permissions.
>
> See hostfs_permission -> access_file -> access. hostfs_permission (not
> access_file) should skip the "access_file" call in case its type is
> OS_TYPE_CHARDEV / OS_TYPE_BLOCKDEV / OS_TYPE_FIFO / OS_TYPE_SOCK.
>
> Look at init_inode() about how to see the file's type, but even better look
> at the cached information, i.e. inode->i_mode and the S_* access macro
> (look at init_special_inode about this).
Just confirming: this patch fixed it. Both /dev/loop0 and /dev/console work
just fine with hostfs root now.
Can this patch make it into 2.6.12?
Rob
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next prev parent reply other threads:[~2005-03-23 9:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-20 19:17 [uml-devel] Hostfs permission checks are all wonky Rob Landley
2005-03-22 19:19 ` Blaisorblade
2005-03-23 6:09 ` Rob Landley
2005-03-24 10:53 ` Blaisorblade
2005-03-28 17:23 ` Rob Landley
2005-03-28 19:48 ` Rob Landley
2005-04-29 20:53 ` Blaisorblade
2005-04-28 23:45 ` Rob Landley
2005-03-23 8:13 ` Rob Landley [this message]
2005-03-24 2:02 ` Blaisorblade
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