This is the mail archive of the
mailing list for the Cygwin project.
Re: [1.7] cygwin allows writing to readonly files
- From: Corinna Vinschen <corinna-cygwin at cygwin dot com>
- To: cygwin at cygwin dot com
- Date: Mon, 10 Aug 2009 15:25:15 +0200
- Subject: Re: [1.7] cygwin allows writing to readonly files
- References: <email@example.com>
- Reply-to: cygwin at cygwin dot com
On Aug 10 17:19, Alexey Borzenkov wrote:
> $ echo foo >test.txt
> $ chmod 0444 test.txt
> $ echo bar >test.txt
> This succeeds, even though the file is readonly, and permissions don't
> allow writing to the file. What's even stranger is that other programs
> (i.e. Notepad and other editors) can't write to this file, because
> there are no writing permissions on the file. How does cygwin 1.7
> manages to bypass NT permissions in this case?
> Currently this breaks ExtUtils::MakeMaker, because it expects readonly
> files not to be writable and test fails.
That's a bug in your testsuite. I assume you're running the tests as
administrator, right? Administrators have the right to write to all
files, even R/O files, according to POSIX rules. Your test would fail
on Linux as well, if you're running it as root.
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
Problem reports: http://cygwin.com/problems.html
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple