[ -w filename ] returns true when permissions are -r--r--r--

Eric Blake eblake@redhat.com
Wed Jul 20 18:21:00 GMT 2011

On 07/20/2011 12:05 PM, Reid Thompson wrote:
> Is this broken?  Or a known windows/cygwin discrepancy?  Or am I missing
> something with my posix/windows file permissions settings

If you are running as an administrator, that might explain it.  Admins 
can alter any file regardless of permissions, in which case [ -w is 
telling you the truth that under your current uid, you can indeed write 
to the file.

This is a feature of access(file,W_OK), and not a bug.

Eric Blake   eblake@redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

More information about the Cygwin mailing list