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Re: bug: Useless error message when SVN_SSH points to non-existent file

From: Garrett Rooney <rooneg_at_electricjellyfish.net>
Date: 2003-06-07 15:50:50 CEST

On Friday, June 6, 2003, at 10:48 PM, Greg Hudson wrote:

> On Fri, 2003-06-06 at 20:49, Garrett Rooney wrote:
>> Unfortunately, it seems that fixing this will require changes to APR.
> I don't like the idea of trying to find out in advance whether the
> tunnel agent is executable. There's no completely robust way of doing
> so under Unix (access() runs afoul of setuid, eaccess() isn't portable,
> and checking permission bits by hand doesn't work right with AFS), and
> it's complicated at any rate because of the path search.
> One option is to change the protocol so that the "greeting" can be an
> error message. That change could have other applications down the road
> ("this repository has moved"). We can either do this Very Soon (before
> 0.24) in a backward-incompatible manner, by changing the format of the
> greeting, or we can do it later in a backward-compatible but less
> elegant manner, by compatibly extending the greeting syntax. I will
> look into doing it the first way now, I think; if I run into problems,
> we can always do it the other way later.
> (From an APR perspective, we can use apr_procattr_child_errfn_set to
> write the error message when the exec doesn't succeed.)

Wow, that's quite a bit cooler than the way I was going, thanks Greg ;-)


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Received on Sat Jun 7 15:51:43 2003

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