From: Eli Zaretskii <eliz@gnu.org>
To: Philip Hodges <philip.hodges@bluewin.ch>
Cc: 17330@debbugs.gnu.org
Subject: bug#17330: files.el cd-absolute overcome false negative from file-executable-p
Date: Sun, 11 May 2014 21:43:32 +0300 [thread overview]
Message-ID: <83tx8wtauj.fsf@gnu.org> (raw)
In-Reply-To: <536FC0C2.6080300@bluewin.ch>
> Date: Sun, 11 May 2014 20:26:10 +0200
> From: Philip Hodges <philip.hodges@bluewin.ch>
> CC: rgm@gnu.org, 17330@debbugs.gnu.org
>
> >> I'm having a hard time understanding why you want to put so much faith
> >> in functions that are not reliable now, and will be quite hard or even
> >> genuinely impossible to make reliable in all of quite a large number of
> >> more or less realistic test scenarios.
> >
> > The functions are reliable. It's just that you have some obscure
> > situation with the share owner, file/directory owner, and network
> > connection, and this combination bites you. It might also be a Cygwin
> > issue.
>
> They are subject to race conditions, false positives and false
> negatives. They are reliable only in the sense that they generally do
> return (unless the network hangs, is there any way to stay responsive
> when that happens?) and the answer is quite often a true positive or
> true negative.
I disagree with this, obviously. Perfectly logical and systematic
behavior can appear random and "unreliable" to an observer who does
not understand that internal logic.
> I just skimmed through yet another tiring article about how there are
> fundamental reasons why cygwin can't always get permissions and ACLs
> exactly right, even without specifically mentioning remote SMB servers.
Those articles are mostly trash, written by people who didn't bother
to learn the subject, and instead spread FUD.
> I'm quite convinced the cygwin folks would have already done it if it
> was actually possible.
Maybe they don't know about this. Which is why I think telling them
about the problem should be a good idea. They do fix new problems
they encounter; e.g., they've just learned about a problem with
Microsoft Accounts, and mostly fixed it.
> If it was affecting Samba (recent with SMB2?) on GNU/Linux or
> Apple's own new SMB in MacOSX 10.9 (which defaults to SMB2.x)
> instead of just Oracle's Solaris (likely still SMB1) then would you
> still write it off as obscure?
Yes. Again, it could also be a Cygwin issue, perhaps due to something
that rarely happens or something new.
next prev parent reply other threads:[~2014-05-11 18:43 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E6923B15-B9A8-4B3C-ADDF-713810613ADD@bluewin.ch>
2014-05-07 18:15 ` bug#17330: files.el cd-absolute overcome false negative from file-executable-p Eli Zaretskii
2014-05-08 5:55 ` Philip Hodges
2014-05-08 7:09 ` Glenn Morris
2014-05-08 16:18 ` Eli Zaretskii
2014-05-11 10:46 ` Philip Hodges
2014-05-11 17:00 ` Eli Zaretskii
2014-05-11 18:26 ` Philip Hodges
2014-05-11 18:38 ` Glenn Morris
2014-05-11 21:59 ` Philip Hodges
2014-05-12 7:10 ` Glenn Morris
2014-05-12 7:26 ` Philip Hodges
2021-10-23 5:09 ` Stefan Kangas
2014-05-11 18:43 ` Eli Zaretskii [this message]
2014-05-03 22:43 bug#17330: thanks for the comments Philip Hodges
2014-05-04 13:24 ` bug#17330: files.el cd-absolute overcome false negative from file-executable-p Philip Hodges
2014-05-04 16:24 ` Eli Zaretskii
2014-05-05 22:43 ` Philip Hodges
2014-04-23 20:54 ` Philip Hodges
2014-05-03 0:24 ` Glenn Morris
2014-05-03 9:17 ` Philip Hodges
2014-05-03 9:35 ` Achim Gratz
2014-05-03 13:26 ` Eli Zaretskii
2014-05-03 13:58 ` Achim Gratz
2014-05-03 16:37 ` Eli Zaretskii
2014-05-03 13:40 ` Eli Zaretskii
2014-05-04 4:16 ` Glenn Morris
2014-05-04 13:01 ` Stefan Monnier
2014-05-04 16:18 ` Eli Zaretskii
2014-05-04 18:07 ` Glenn Morris
2014-05-04 22:44 ` Stefan Monnier
2014-05-09 6:54 ` Glenn Morris
2014-05-06 4:15 ` Glenn Morris
2014-05-06 7:17 ` Eli Zaretskii
2014-05-06 12:46 ` Stefan Monnier
2014-05-06 16:56 ` Glenn Morris
2014-05-11 13:55 ` Philip Hodges
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