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Re: Number of Files on Volume
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Re: Number of Files on Volume


  • Subject: Re: Number of Files on Volume
  • From: Graham Lee <email@hidden>
  • Date: Wed, 26 Nov 2008 11:53:38 +0000
  • Acceptlanguage: en-US, en-GB
  • Thread-topic: Number of Files on Volume

On 26/11/2008 08:28, "Andrew Farmer" <email@hidden> wrote:

> On 25 Nov 08, at 16:44, Joe Turner wrote:
>> I have ben trying to find a good way to get an accurate count of
>> files on a Volume. Using a NSDirectoryEnumerator takes way too long
>> (a couples minutes), so, I figured out how to do it on the old
>> Carbon FileManager using [FSGetVolumeInfo...]
>>
>> Is there a better way of doing it? Maybe with Cocoa tools?
>
> If you want a non-Carbon way of doing this, take a look at statfs64().
> It's not technically Cocoa, but it's not Carbon and it works just fine.
>
> An equivalent to your code would simply be:
>
>    self.count = [NSNumber numberWithUnsignedLongLong:fsbuf.f_files];

In fact, f_files (when it works) reports the total number of nodes on the
filesystem, so you need to subtract f_ffree to find the number of nodes
which are occupied. Also, you need to test that neither of these numbers is
-1, as some filesystems don't support telling you that stuff.

Cheers,
Graham.
--
Graham Lee
Senior Macintosh Software Engineer, Sophos Plc.
+44 1235 540266
http://www.sophos.com/

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References: 
 >Re: Number of Files on Volume (From: Andrew Farmer <email@hidden>)

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