CYGWIN inode over Samba share not constructed from IndexNumber

Fri May 11 16:22:00 GMT 2012

On May 11 11:42, starlight.2012q2@binnacle.cx wrote:
> Hello,
>> Ran into a quirk that caused some trouble.
>> For some reason CYGWIN 1.7.5 (I know this is old)

You should really update.
> is constructing inode values for files on
> Samba (3.6.4) shares with a different algorithm
> than is used for files on NTFS volumes.
>> This caused a script that checks for matching
> hard-links to fail.
>> Confirmed that Samba is returning the actual
> inode values in 'IndexNumber' with 'procmon'
> while running the
>> stat -c '%h %d %i' filename
>> command. See https://lists.samba.org/archive/samba/2012-May/167381.html.
>> Is CYGWIN mistaking the Samba share for a FAT32
> volume and using an inode-faking algo? Or

It depends on what Samba returns as file system information. Right now
Cygwin expects valid inode information only from filesystems which
return the FILE_PERSISTENT_ACLS flag, except for netapps (never) and nfs
(always).
Additionally, the returned file ID must be > 0xffffffff, otherwise we
don't trust the server to generate usefule file IDs. This usually only
affects remote NT4 NTFS and Samba < 3.0.
Assuming your Samba drive is //server/share, please run
 /usr/lib/getVolInfo //server/share
and post the output as reply here. As an example, this is what my
Samba shares return:
 $ /usr/lib/csih/getVolInfo.exe //server/share
 Device Type : 7
 Characteristics : 10
 Volume Name : <corinna>
 Serial Number : 2469776470
 Max Filenamelength : 255
 Filesystemname : <NTFS>
 Flags : 1002f
 FILE_CASE_SENSITIVE_SEARCH : TRUE
 FILE_CASE_PRESERVED_NAMES : TRUE
 FILE_UNICODE_ON_DISK : TRUE
 FILE_PERSISTENT_ACLS : TRUE		<- !!!
 FILE_FILE_COMPRESSION : FALSE
 FILE_VOLUME_QUOTAS : TRUE
 FILE_SUPPORTS_SPARSE_FILES : FALSE
 FILE_SUPPORTS_REPARSE_POINTS: FALSE
 FILE_SUPPORTS_REMOTE_STORAGE: FALSE
 FILE_VOLUME_IS_COMPRESSED : FALSE
 FILE_SUPPORTS_OBJECT_IDS : TRUE
 FILE_SUPPORTS_ENCRYPTION : FALSE
 FILE_NAMED_STREAMS : FALSE
 FILE_READ_ONLY_VOLUME : FALSE
 FILE_SEQUENTIAL_WRITE_ONCE : FALSE
 FILE_SUPPORTS_TRANSACTIONS : FALSE
If your Samba doesn't set FILE_PERSISTENT_ACLS to TRUE, you have to
change your smb.conf file so that it does. 
Corinna
-- 
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
Red Hat
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