[Samba] "file not found" under high-contention
Jeremy Allison
jra at samba.org
Fri May 11 08:25:53 MDT 2012
On Fri, May 11, 2012 at 10:19:48AM -0400, starlight.2012q2 at binnacle.cx wrote:
> At 07:08 AM 5/11/2012 -0700, Jeremy Allison wrote:
> >On Fri, May 11, 2012 at 09:56:52AM -0400,
> >I need to know what calls are being made on the wire to
> >get these inode numbers back from Samba. Just showing
> >the cygwin output doesn't help, sorry.
>
>
> GetFileInformationByHandle
>
> http://msdn.microsoft.com/en-us/library/windows/desktop/aa364952%28v=vs.85%29.aspx
>
>
> BY_HANDLE_FILE_INFORMATION
>
> http://msdn.microsoft.com/en-us/library/windows/desktop/aa363788%28v=vs.85%29.aspx
>
>
> .
> .
> .
> DWORD nNumberOfLinks;
> DWORD nFileIndexHigh;
> DWORD nFileIndexLow;
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;
}
Does that help you figure out why it's different for
the different paths ? (I can't see why it is, to be
honest).
Jeremy.
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