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Re: 22.1.50; insert-file-contents is slow under tramp
From: |
Michael Albinus |
Subject: |
Re: 22.1.50; insert-file-contents is slow under tramp |
Date: |
Mon, 27 Aug 2007 13:41:09 +0200 |
User-agent: |
Gnus/5.1008 (Gnus v5.10.8) Emacs/21.3 (hpux) |
Stefan Monnier <address@hidden> writes:
>> Similar approach. It calls `tramp-do-copy-or-rename-file-directly',
>> which copies the "remote" file to /tmp, and assigns proper
>> permissions.
>
> What would be proper permissions? I mean: how do you make sure that some
> nasty third party won't be able to read the content of that temp file, while
> still making it possible for Emacs to access the file?
The current approach(1) is to remove any temporary file immediately after
it has been processes by Emacs (for example, insert-file-contents is
finished). This reduces the time nasty third party can see such a
file.
But I admit, this might not be sufficient wrt security threats. Maybe
one could change it such a way, that temporary files shall be owned by
(user-login-name), and shall carry 0400 permissions.
(1): That's the theory. In practice, there are still some zero-length
temporary files left, for which I haven't debugged yet who is
responsible to remove them. On my todo list.
> 1MB/s for base64 sounds terribly slow. My 266MHz home-router can send
> and encrypt data from disk to the network at about that speed.
> But admittedly, we're not talking `mimencode' but base64-decode-region which
> may include a lot of overhead to extract and insert data from/to the buffer.
Don't take the absolute values, I just wanted to show the
comparison. Tests were run on my stone-age 700MHz PIII machine.
> Stefan
Best regards, Michael.
- Re: 22.1.50; insert-file-contents is slow under tramp, (continued)
- Re: 22.1.50; insert-file-contents is slow under tramp, Stephen Berman, 2007/08/23
- Re: 22.1.50; insert-file-contents is slow under tramp, martin rudalics, 2007/08/23
- Message not available
- Re: 22.1.50; insert-file-contents is slow under tramp, Stephen Berman, 2007/08/23
- Re: 22.1.50; insert-file-contents is slow under tramp, Michael Albinus, 2007/08/24
- Re: 22.1.50; insert-file-contents is slow under tramp, Stephen Berman, 2007/08/24
- Re: 22.1.50; insert-file-contents is slow under tramp, Stefan Monnier, 2007/08/24
- Re: 22.1.50; insert-file-contents is slow under tramp, Michael Albinus, 2007/08/26
- Re: 22.1.50; insert-file-contents is slow under tramp, David Kastrup, 2007/08/26
- Re: 22.1.50; insert-file-contents is slow under tramp, Michael Albinus, 2007/08/26
- Re: 22.1.50; insert-file-contents is slow under tramp, Stefan Monnier, 2007/08/27
- Re: 22.1.50; insert-file-contents is slow under tramp,
Michael Albinus <=
- Re: 22.1.50; insert-file-contents is slow under tramp, Stefan Monnier, 2007/08/27
- Re: 22.1.50; insert-file-contents is slow under tramp, Thien-Thi Nguyen, 2007/08/27
- Re: 22.1.50; insert-file-contents is slow under tramp, David Kastrup, 2007/08/27
- Re: 22.1.50; insert-file-contents is slow under tramp, Michael Albinus, 2007/08/27
- Re: 22.1.50; insert-file-contents is slow under tramp, Stefan Monnier, 2007/08/27
- Re: 22.1.50; insert-file-contents is slow under tramp, Michael Albinus, 2007/08/27
- Re: 22.1.50; insert-file-contents is slow under tramp, Michael Albinus, 2007/08/27
- Re: 22.1.50; insert-file-contents is slow under tramp, David Kastrup, 2007/08/27
- Re: 22.1.50; insert-file-contents is slow under tramp, Richard Stallman, 2007/08/27
- Re: 22.1.50; insert-file-contents is slow under tramp, David Kastrup, 2007/08/27