From: Roger Pack <rogerpack2005@...>
Date: 2011-05-18T02:21:44+09:00
Subject: [ruby-core:36276] [Ruby 1.9 - Bug #4712] File.writable? inaccurate in windows


Issue #4712 has been updated by Roger Pack.



c:\Program Files (x86)\NetBeans 6.9.1>attrib uninstall.exe
A            C:\Program Files (x86)\NetBeans 6.9.1\uninstall.exe

c:\Program Files (x86)\NetBeans 6.9.1>cacls uninstall.exe
c:\Program Files (x86)\NetBeans 6.9.1\uninstall.exe NT AUTHORITY\SYSTEM:(ID)F
                                                    BUILTIN\Administrators:(ID)F
                                                    BUILTIN\Users:(ID)R


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Bug #4712: File.writable? inaccurate in windows
http://redmine.ruby-lang.org/issues/4712

Author: Roger Pack
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: -


Hello. Here's what happens (when a user doesn't have admin privileges in windows 7):

c:\Program Files (x86)\NetBeans 6.9.1>irb --simple-prompt
>> File.writable?('.')
=> true
>> File.writable?('./uninstall.exe')
=> true
>> File.open('./uninstall.exe', 'wb')
Errno::EACCES: Permission denied - ./uninstall.exe
        from (irb):4:in `initialize'
        from (irb):4:in `open'
        from (irb):4

So I think writable was returning true in error here.
Cheers!
-r


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