From: Paul Eggert <eggert@cs.ucla.edu>
To: Eli Zaretskii <eliz@gnu.org>
Cc: jsynacek@redhat.com, 24656-done@debbugs.gnu.org
Subject: bug#24656: 25.1; Emacs leaves lock files on a CIFS share
Date: Tue, 11 Oct 2016 13:15:50 -0700 [thread overview]
Message-ID: <bcb4005a-2a67-fd0f-7102-f6760dc0ca85@cs.ucla.edu> (raw)
In-Reply-To: <837f9eddbn.fsf@gnu.org>
[-- Attachment #1: Type: text/plain, Size: 1161 bytes --]
On 10/11/2016 10:07 AM, Eli Zaretskii wrote:
> Sounds fine to me. I just tried this on a Windows filesystem, and it
> allows that, so Samba should, too.
Unfortunately when I looked at the Emacs code more carefully, I found
that '..' won't work because it will confuse older Emacs. So will '@'.
Come to think of it, changing conventions in this area is likely to
break interoperability not only with older Emacs, but also with other
programs that attempt to work with Emacs's locking scheme.
I looked into Cygwin, and it seems to use U+F022 to represent '"', not
':'. So this is not Cygwin-related.
I looked at the original Red Hat bug report, and found that I could
reproduce the problem with a simple C program, i.e., without Emacs or
Cygwin. It appears to be a Samba bug. I added a comment to that effect
to the Red Hat bug report.
I installed into Emacs master the attached patch, which should work
around the Samba bug without introducing so many interoperability
hassles, and am boldly marking the Emacs bug as done. It's not clear to
me whether this change is worth backporting into emacs-25, as Emacs has
locked files this way for ages.
[-- Attachment #2: 0001-Work-around-Samba-bug-with-in-symlink-contents.patch --]
[-- Type: application/x-patch, Size: 3994 bytes --]
next prev parent reply other threads:[~2016-10-11 20:15 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-10 11:30 bug#24656: 25.1; Emacs leaves lock files on a CIFS share Jan Synáček
2016-10-10 12:14 ` Eli Zaretskii
2016-10-10 13:49 ` Jan Synacek
2016-10-10 15:49 ` Eli Zaretskii
2016-10-11 6:32 ` Jan Synacek
2016-10-11 6:49 ` Eli Zaretskii
2016-10-11 6:52 ` Jan Synacek
2016-10-11 15:59 ` Paul Eggert
2016-10-11 16:29 ` Eli Zaretskii
2016-10-11 16:53 ` Paul Eggert
2016-10-11 17:07 ` Eli Zaretskii
2016-10-11 20:15 ` Paul Eggert [this message]
2016-10-11 20:58 ` Eli Zaretskii
2016-10-11 22:46 ` Paul Eggert
2016-10-12 6:40 ` Eli Zaretskii
2016-10-12 16:21 ` Paul Eggert
2016-10-12 16:53 ` Eli Zaretskii
2016-10-11 17:43 ` Achim Gratz
2016-10-11 18:16 ` Eli Zaretskii
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