Problems copying files from DOS

[Wolf Wiegand]

Hi,

I'm trying to install Windows XP using the unattended project, which, in 
short terms, boots FreeDOS over PXE, copies all needed installation 
files from a samba server, an then starts a local installation. On some 
machines, some files cannot be copied. 

A level 10 trace of a failed file copy:

[2007/02/15 15:03:48, 5] smbd/filename.c:unix_convert(185)
  unix_convert begin: name = os/winxp/I386/DRMCLIEN.DLL, dirpath = 
os/winxp/I386, start = DRMCLIEN.DLL
[2007/02/15 15:03:48, 10] smbd/mangle_hash2.c:is_mangled(276)
  is_mangled DRMCLIEN.DLL ?
[2007/02/15 15:03:48, 10] smbd/mangle_hash2.c:is_mangled_component(215)
  is_mangled_component DRMCLIEN.DLL (len 12) ?
[2007/02/15 15:03:48, 10] smbd/mangle_hash2.c:is_mangled(276)
  is_mangled DRMCLIEN.DLL ?
[2007/02/15 15:03:48, 10] smbd/mangle_hash2.c:is_mangled_component(215)
  is_mangled_component DRMCLIEN.DLL (len 12) ?
[2007/02/15 15:03:48, 10] smbd/mangle_hash2.c:is_mangled(276)
  is_mangled DRMCLIEN.DLL ?
[2007/02/15 15:03:48, 10] smbd/mangle_hash2.c:is_mangled_component(215)
  is_mangled_component DRMCLIEN.DLL (len 12) ?
[2007/02/15 15:03:48, 5] smbd/filename.c:unix_convert(335)
  New file DRMCLIEN.DLL
[2007/02/15 15:03:48, 3] smbd/reply.c:reply_getatr(913)
  stat of os/winxp/I386/DRMCLIEN.DLL failed (No such file or directory)

The file does exist, however. Also, in following attempts to install the 
same machine, this error will occur with different files each time. 
There are some other condition which must be met for this error to 
occur: We can only reproduce this using a 2.6.18.1 linux kernel, and an 
Intel Gigabit NIC (e1000). Switching to a 2.4.32 kernel or a different 
NIC seems to make the problem go away. I've checked this with samba 
3.0.22 and 3.0.23d.

The relevant code part seems to be in smbd/reply.c (905):

if (VALID_STAT(sbuf) || SMB_VFS_STAT(conn,fname,&sbuf) == 0){...

This check fails, leading to the above error.

Does anybody have an idea whether this a samba or a kernel issue, and 
how this problem could be done away with?

Cheers,

Wolf 
-- 
Wolf Wiegand            Entwicklung                wiegand at univention.de
Univention GmbH         Linux for your business    fon: +49 421 22232- 0
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