CODEWITHSUNDEEP
objective-ccocoansfilemanager
Coderama
Coderama

Reputation: 11352

Unable to create new directory using NSFileManager with with the owner as `root`

Assignment of NSFileOwnerAccountName and NSFileGroupOwnerAccountName does not work? The directory created defaults to my account coderama and the group staff.

NSFileManager *fileManager = [NSFileManager defaultManager];
NSMutableDictionary *attr = [NSMutableDictionary dictionary]; 
[attr setObject:@"root" forKey:NSFileOwnerAccountName];
[attr setObject:@"wheel" forKey:NSFileGroupOwnerAccountName]; 
[attr setObject:[NSNumber numberWithInt:0755] forKey:NSFilePosixPermissions];

[fileManager createDirectoryAtPath:dir withIntermediateDirectories:TRUE attributes:attr error:&error];

Upvotes: 0

Views: 857

Answers (1)

Rob Keniger
Rob Keniger

Reputation: 46020

It's highly likely that without authorization, you will be unable to create anything owned by root. However, assuming you do have authorization…

The docs don't mention this restriction specifically for createDirectoryAtPath:withIntermediateDirectories:attributes:, but for the related method setAttributes:ofItemAtPath:error:, you can't use NSFileOwnerAccountName or NSFileGroupOwnerAccountName. You must use the account ID instead, with NSFileOwnerAccountID and NSFileGroupOwnerAccountID. If you use the …Name-based keys, they are ignored.

It may be that createDirectoryAtPath:withIntermediateDirectories:attributes: also has this restriction. I would try setting IDs instead of names, which I suspect will work.

Upvotes: 2

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