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

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On Mon, 22 Jan 2007 00:03:21 +0100, Willy Tarreau <[email protected]> wrote:

>Hi Grant !
>
>On Mon, Jan 22, 2007 at 09:52:44AM +1100, Grant Coady wrote:
>> On Fri, 19 Jan 2007 18:05:44 -0700, dann frazier <[email protected]> wrote:
>> 
>> >On Thu, Jan 18, 2007 at 06:00:40PM -0700, dann frazier wrote:
>> >Ah, think I see the problem now:
>> >
>> >--- kernel-source-2.4.27.orig/fs/smbfs/proc.c	2007-01-19 17:53:57.247695476 -0700
>> >+++ kernel-source-2.4.27/fs/smbfs/proc.c	2007-01-19 17:49:07.480161733 -0700
>> >@@ -1997,7 +1997,7 @@
>> > 		fattr->f_mode = (server->mnt->dir_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) | S_IFDIR;
>> > 	else if ( (server->mnt->flags & SMB_MOUNT_FMODE) &&
>> > 	          !(S_ISDIR(fattr->f_mode)) )
>> >-		fattr->f_mode = (server->mnt->file_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) | S_IFREG;
>> >+		fattr->f_mode = (server->mnt->file_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) | (fattr->f_mode & S_IFMT);
>> > 
>> > }
>> > 
>> client running 2.4.34 with above patch, server is running 2.6.19.2 to 
>> eliminate it from the problem space (hopefully ;) :
>> grant@sempro:/home/other$ uname -r
>> 2.4.34b
>> grant@sempro:/home/other$ ls -l
>> total 9
>> drwxr-xr-x 1 grant wheel 4096 2007-01-21 11:44 dir/
>> drwxr-xr-x 1 grant wheel 4096 2007-01-21 11:44 dirlink/
>> -rwxr-xr-x 1 grant wheel   15 2007-01-21 11:43 file*
>> -rwxr-xr-x 1 grant wheel   15 2007-01-21 11:43 filelink*
>
>It seems to me that there is a difference, because filelink now appears the
>same size as file. It's just as if we had hard links instead of symlinks.

Hi Willy,

No, those dir and files were created server-side, sorry I gave wrong 
impression, I still get on client side:

grant@sempro:/home/other$ uname -r
2.4.34b
grant@sempro:/home/other$ mkdir test
grant@sempro:/home/other$ ln -s test testlink
ln: creating symbolic link `testlink' to `test': Operation not permitted
grant@sempro:/home/other$ echo "this is also a test" > test/file
grant@sempro:/home/other$ ln -s test/file test2
ln: creating symbolic link `test2' to `test/file': Operation not permitted

trying to create symlinks.

No problems creating symlinks with 2.4.33.3.

Grant.
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