Thanks Jim - I think that's the info I'm looking for.
On Thu, Sep 1, 2016 at 6:53 PM, Jim Luther <luthe...@apple.com> wrote:
> I'm guessing TextEdit is using NSURLIsWritableKey like this:
>
> NSURL *url = [NSURL fileURLWithPath:@"/System/" isDirectory:YES]; //
> "/System/" isn't writable for most users
> NSError *error;
> NSNumber *isWritable = nil;
> if ( [url getResourceValue:&isWritable forKey:NSURLIsWritableKey
> error:&error] ) {
> NSLog(@"%@ is %@writable", url, [isWritable boolValue] ? @""
> : @"not ");
> }
> else {
> NSLog(@"Error: %@", error);
> }
>
> The NSURLIsWritableKey property reflects W_OK bit in the effective
> permissions of the current user as returned by access(2) or getattrlist(2)
> with the ATTR_CMN_USERACCESS attribute.
>
> On Sep 1, 2016, at 2:44 PM, Jeff Schindler <jas...@gmail.com> wrote:
>
> Hi,
>
> I am accessing a file from a Windows server over SMB. The file has an ACL
> applied to it on the Windows side such that it is effectively read-only.
> SMB seems to pick this up, as the associated app (TextEdit) says that the
> file is locked, but I'm trying to figure out how I can determine the
> read-only state of that file on the Mac side myself, either from code or
> the command line. Based on what I see, it does not have
> the com.apple.system.Security extended attribute applied to it (I *think*
> you should be able to see that via "ls -ahel@"), and the normal posix
> permissions don't reflect its read-only state, so I'm trying to figure out
> how TextEdit is picking that up, and how I might do the same from code.
>
> Thanks!
> Jeff
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