linux-kernel - Re: problems with latest smbfs changes on 2.4.34 and security backports

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Message-ID: <20070118042116.GA11914@1wt.eu>
Date:	Thu, 18 Jan 2007 05:21:16 +0100
From:	Willy Tarreau <w@....eu>
To:	Grant Coady <gcoady.lk@...il.com>
Cc:	Santiago Garcia Mantinan <manty@...ian.org>,
	linux-kernel@...r.kernel.org, debian-kernel@...ts.debian.org,
	dannf@...nf.org
Subject: Re: problems with latest smbfs changes on 2.4.34 and security backports

Hi Grant !

On Thu, Jan 18, 2007 at 11:09:57AM +1100, Grant Coady wrote:
(...)
> > 	} else {
> >-		mnt->file_mode = mnt->dir_mode = S_IRWXU | S_IRGRP | S_IXGRP |
> >-						S_IROTH | S_IXOTH | S_IFREG;
> >-		mnt->dir_mode = mnt->dir_mode = S_IRWXU | S_IRGRP | S_IXGRP |
> >-						S_IROTH | S_IXOTH | S_IFDIR;
> >+		mnt->file_mode = S_IRWXU | S_IRGRP | S_IXGRP |
> >+				S_IROTH | S_IXOTH | S_IFREG | S_IFLNK;
> >+		mnt->dir_mode = S_IRWXU | S_IRGRP | S_IXGRP |
> >+				S_IROTH | S_IXOTH | S_IFDIR;
> > 		if (parse_options(mnt, raw_data))
> > 			goto out_bad_option;
> 
> I'm comparing 2.4.33.3 with 2.4.34, with 2.4.34 and above patch symlinks 
> to directories seen as target, nor can they be created (Operation not 
> permitted...)

Thanks very much Grant for the test. Could you try a symlink to a file ?
And while we're at it, would you like to try to add "|S_IFLNK" to
mnt->dir_mode ? If my suggestion was stupid, at least let's test it to
full extent ;-)

I had another idea looking at the code but since I really don't know it,
I would not like to propose random changes till this magically works. I'd
wait for Dann who understood the code.

Best regards,
Willy

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