This code would work in most cases but is actually unreliable.
Obvious cases: you have 2 text files with these names ar the root of a
partition.
Worse case: an old time machine partition has been replaced by a new
one. Since the old partition is some kind of a second backup, the user
has not removed the Time Machine files.
For Boot Camp, I tend to believe it's possible to get the information
using the statfs API.
For Time Machine, maybe it's safe to get the info from the
/Library/Preferences/com.apple.TimeMachine.plist file (assuming it's
there).
On Tue, Aug 2, 2011 at 5:57 PM, Leonardo Borsten
<le...@prepressmiami.com> wrote:
> Hello,
>
> What is the most reliable way to detect in code if a mounted volume is the
> Time Machine disk?
> Currently I'm using the following code (also to detect a Boot Camp volume):
>
> - (Boolean)isNotSearchable:(NSString *)volumePath
> {
>
> NSFileManager *fm = [NSFileManager defaultManager];
>
> NSString *timemachine = [volumePath
> stringByAppendingPathComponent:@"Backups.backupdb"];
> NSString *winSystem = [volumePath
> stringByAppendingPathComponent:@"MSDOS.SYS"];
>
> if ([fm fileExistsAtPath:timemachine]) return YES;
> if ([fm fileExistsAtPath:winSystem]) return YES;
>
> return NO;
> }
>
> This works fine on my system. Will this code work reliably on my user's
> systems? Is there a better way?
> The same question can apply for iDisk and iCloud, probably.
>
> The reason I need to know is that I have a function using FSCatalogSearch
> where I definitely don't want to access these type of volumes.
>
> Thanks!
>
>
> Leonardo Borsten
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