X-Recipient:	archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status:	No, hits=-2.3 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS,T_RP_MATCHES_RCVD
X-Spam-Check-By:	sourceware.org
Message-Id:	<6.2.5.6.2.20120511125624.05cd1ff8@binnacle.cx>
Date:	Fri, 11 May 2012 12:56:54 -0400
To:	cygwin AT cygwin DOT com
From:	starlight DOT 2012q2 AT binnacle DOT cx
Subject:	Re: CYGWIN inode over Samba share not constructed from IndexNumber
Mime-Version:	1.0
Received-SPF:	pass (mx.binnacle.cx: 172.29.87.10 is whitelisted by SPF-milter whitelist entry)
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

Here is the logic Samba uses for inode
determination, per Jermey Allison:



Ok, here's how we construct the 64-bit return
value for that field:

/********************************************************************
 Create a 64 bit FileIndex. If the file is on the same device as
 the root of the share, just return the 64-bit inode. If it isn't,
 mangle as we used to do.
********************************************************************/

uint64_t get_FileIndex(connection_struct *conn, const SMB_STRUCT_STAT *psbuf)
{
   uint64_t file_index;
   if (conn->base_share_dev == psbuf->st_ex_dev) {
      return (uint64_t)psbuf->st_ex_ino;
   }
   file_index = ((psbuf->st_ex_ino) & UINT32_MAX); /* FileIndexLow */
   file_index |= ((uint64_t)((psbuf->st_ex_dev) & UINT32_MAX)) << 32; /* FileIndexHigh */
   return file_index;
}


--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -