From: Ken Brown <kbrown@cornell.edu>
To: Jari Aalto <jari.aalto@cante.net>
Cc: 10257@debbugs.gnu.org
Subject: bug#10257: 23.3.1 Cygwin: network drives - file is write protected (false positive)
Date: Fri, 09 Dec 2011 15:33:46 -0500 [thread overview]
Message-ID: <4EE270AA.2080702@cornell.edu> (raw)
In-Reply-To: <87aa71mwng.fsf@picasso.cante.net>
On 12/9/2011 1:23 PM, Jari Aalto wrote:
> Package: emacs
> Version: 23.3+1-4
> Severity: normal
>
> TEST CASE
>
> - OS: Windows 7 64 bit
> - Start Cygwin X server:
> XWin :0 -unixkill -multiwindow
> - Start Cygwin Emacs:
> DISPLAY=:0 emacs-X11&
> - C-x C-f any network drive file
Is there really a problem on *any* network drive, or is the issue that
you have some particular file system on that drive for which Cygwin
can't get reliable permission information?
I would think that you should try to get help on the Cygwin list before
talking about making emacs bypass permission checks on Cygwin. I don't
use network drives myself, but I know that plenty of people do, and the
Cygwin maintainers are very accommodating in trying to teach Cygwin to
recognize problematic file systems.
And if that fails, can't you solve the problem by mounting your drive
with the noacl option?
> Emacs marks the file as read-only (%%) and asks every time a question
> after pressing C-x C-s:
>
> File<name here> is write-protected; try to save anyway? (y or n)
>
> PROBLEM
>
> The constant prompting "Y/N" makes writing to a network drive location
> exessively hard. It's nuissance to have to be able to confirm every
> save action.
>
> There doens't seem to be way to turn of this prompting.
>
> SUGGESTION
>
> The logic of checking if file is write protedted or not does not seem
> to be reliable under Cygwin regarding network drives. The Permissions
> probably don't come through correctly for Emacs to examine them.
>
> A) Offer option to turn of confirmation
> B) or bypass write protection checks under Cygwin
>
> TEST DATA
>
> Here is an example under Cygwin Emacs:
>
> (file-attributes "/cygdrive/z/tmp/test-epackage.el")
> => (nil 1 4294967295.0 4294967295.0 (20194 11100) (20194 19792) (20194
> 19792) 437 "-rwxr--r--" t (-1735557 1952988 . 8890) (30147 . 13405))
>
> Under Cygwin Bash shell it looks like this:
>
> $ ls -la /cygdrive/z/tmp/test-epackage.el
> -rwxr--r-- 1 ???????? ???????? 437 Dec 9 20:02 /cygdrive/z/tmp/test-epackage.el
>
> Note: the uid and gid information is not available from this non-domain
> network drive.
next prev parent reply other threads:[~2011-12-09 20:33 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-09 18:23 bug#10257: 23.3.1 Cygwin: network drives - file is write protected (false positive) Jari Aalto
2011-12-09 20:33 ` Ken Brown [this message]
2011-12-10 9:58 ` jaalto
2011-12-13 12:18 ` Ken Brown
2011-12-13 14:00 ` jari
2011-12-13 14:43 ` Eli Zaretskii
2011-12-13 15:12 ` Ken Brown
2011-12-13 19:27 ` Stefan Monnier
2011-12-13 20:16 ` Ken Brown
2011-12-14 2:54 ` Stefan Monnier
2011-12-14 3:27 ` Ken Brown
2011-12-14 8:01 ` Jari Aalto
2011-12-14 8:35 ` Eli Zaretskii
2011-12-14 12:24 ` Ken Brown
2011-12-14 12:55 ` Ken Brown
2011-12-14 13:10 ` Eli Zaretskii
2011-12-14 14:19 ` Ken Brown
2011-12-14 14:47 ` jari
2011-12-14 17:30 ` Eli Zaretskii
2011-12-14 17:57 ` Ken Brown
2011-12-15 2:43 ` Ken Brown
2011-12-15 2:53 ` Ken Brown
2011-12-15 3:19 ` Ken Brown
2011-12-15 4:04 ` Eli Zaretskii
2011-12-15 14:42 ` Ken Brown
2011-12-16 19:37 ` Ken Brown
2011-12-16 19:46 ` Eli Zaretskii
2011-12-16 23:15 ` Stefan Monnier
2011-12-17 17:08 ` Ken Brown
2011-12-14 14:15 ` jari
2011-12-14 14:29 ` Ken Brown
2011-12-14 14:43 ` jari
2011-12-14 17:21 ` Eli Zaretskii
2011-12-14 17:23 ` Richard Stallman
2011-12-13 16:26 ` jari
2011-12-13 16:52 ` Ken Brown
2011-12-13 17:48 ` jari
2011-12-13 17:48 ` Eli Zaretskii
2011-12-13 18:05 ` jari
2011-12-13 18:36 ` Eli Zaretskii
2011-12-15 14:44 ` Jason Rumney
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