This is the mail archive of the cygwin mailing list for the Cygwin project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: if [ -w branching: how to spot a locked USB stick


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

According to Corinna Vinschen on 7/13/2007 7:06 AM:
>> Actually, this is a cygwin question.  Bash's [ command only reports what
>> access("/h",W_OK) tells it to report, 
> 
> It's the latter.  The fact that the USB stick is locked doesn't
> mean that the permission bits returned by the OS calls are augmented
> to reflect the fact that the stick is not writable.  All permission
> bits are still intact.  Only when actually trying to write to the device,
> you'll get the Win32 error message equivalent of EROFS.

But POSIX requires access(...,W_OK) to fail with EROFS on a read-only file
system.  Is there any way for cygwin to easily determine this without
actually attempting a write?

http://www.opengroup.org/onlinepubs/009695399/functions/access.html

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@byu.net
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (Cygwin)
Comment: Public key at home.comcast.net/~ericblake/eblake.gpg
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFGl4WU84KuGfSFAYARAv2+AJ9vIZCjEAKWpuY7W1KweyhpIw7RmQCgy1kH
cgUK5FvUNu2mNGTiz5BW6eY=
=tq7N
-----END PGP SIGNATURE-----

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


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]