Re: Trying to understand a permissions failure when writing to ~/Desktop
Re: Trying to understand a permissions failure when writing to ~/Desktop
- Subject: Re: Trying to understand a permissions failure when writing to ~/Desktop
- From: Alex Zavatone <email@hidden>
- Date: Wed, 27 Jan 2016 21:51:41 -0500
According to the sandboxing docs, I recall that for sandboxing, there are a certain set of locations where you can save files to without requiring user permission. Your ~/Documents folder is one of them. IIRC, all other locations require user confirmation to save the files.
Try saving to the docs folder and/or trying writing to the desktop with sandboxing disabled.
On Jan 27, 2016, at 8:42 PM, Graham Cox <email@hidden> wrote:
> I use -[NSData writeToURL:options:error] to write data to files in a location generally chosen by the user. That works fine.
>
> The default location is ~/Desktop, if the user fails to choose anything, or if the bookmark of the previously chosen location fails to resolve. However, when I try to write the file I get an error 513, ‘you don’t have permission’, underlying error 1, operation not permitted’. If the user chooses the Desktop themselves using the Open panel, it works fine.
>
> The ~/Desktop permissions seem to be OK - I have readwrite permission on that folder.
>
> So something is weird about the URL for ~/Desktop when I create it programatically as opposed to what NSOpenPanel returns. Note this isn’t a sandboxed app, so that shouldn’t come into it.
>
> I create the default URL thusly:
>
> NSURL* desktopURL = [[NSFileManager defaultManager] URLForDirectory:NSDesktopDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:YES error:&error];
>
>
> I can’t see any obvious difference between the URL here and the one I get from NSOpenPanel, but there must be one.
>
>
> Any ideas what the problem could be here?
>
> —Graham
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