Re: Number of Files on Volume
Re: Number of Files on Volume
- Subject: Re: Number of Files on Volume
- From: Jean-Daniel Dupas <email@hidden>
- Date: Wed, 26 Nov 2008 15:51:43 +0100
Just a question, what was wrong with the CoreServices way ? (ie using
FSGetVolumeInfo).
Le 26 nov. 08 à 15:19, Joe Turner a écrit :
Okay, maybe I spoke too soon... It worked twice. To get the number
of files, I am doing this now:
- (NSNumber *)fileCount
{
NSDictionary *attributes = [[NSFileManager defaultManager]
fileSystemAttributesAtPath:path];
return [NSNumber numberWithDouble:
([[attributes objectForKey:NSFileSystemNodes]
doubleValue] - [[attributes objectForKey:NSFileSystemFreeNodes]
doubleValue])];
}
The first two times I got the right number (752339), but now I am
getting 18749375. Is this way even supposed to work?
Thanks!
On Nov 26, 2008, at 5:53 AM, Graham Lee wrote:
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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