lkml.org 
[lkml]   [2012]   [Jan]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: sysfs regression: wrong link counts
Date
Alan Cox <alan@lxorguk.ukuu.org.uk> writes:

>> Isn't there some other "proper" way of doing this in userspace, or is
>> this really the correct way?
>
> You can look at the S_IFMT bits and stuff however link count indicating
> number of subdirectories is a standard Unix thing and used by many quite
> mundane tools as an optimisation.

Those tools for a decade or better all know to treat nlink == 1 as the
case where the optimization does not apply.

On a traditional unix filesytem the most common place you will see nlink
== 1 is when the link count overflows. extN with > 65536 subdirectories
as I recall.


Eric


\
 
 \ /
  Last update: 2012-01-31 04:45    [W:0.166 / U:0.280 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site