GNU bug report logs - #1688
23.0.60; ttname returned by system-process-attributes points to nonexisting file

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Package: emacs;

Reported by: Daiki Ueno <ueno <at> unixuser.org>

Date: Wed, 24 Dec 2008 07:05:04 UTC

Severity: minor

Tags: wontfix

Done: Lars Magne Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

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From: Eli Zaretskii <eliz <at> gnu.org>
To: richardeng <richardeng <at> foxmail.com>, 1688 <at> debbugs.gnu.org
Cc: ueno <at> unixuser.org, emacs-pretest-bug <at> gnu.org, bug-gnu-emacs <at> gnu.org
Subject: bug#1688: 23.0.60;	ttname returned by system-process-attributes points to nonexisting file
Date: Mon, 12 Jan 2009 21:19:39 +0200

> Date: Tue, 13 Jan 2009 01:17:23 +0800
> From: richardeng <richardeng <at> foxmail.com>
> Cc: emacs-pretest-bug <at> gnu.org
> 
> --- sysdep.c.~1.328.~   2009-01-03 07:04:59.000000000 -0800
> +++ sysdep.c    2009-01-13 01:09:56.000000000 -0800
> @@ -3322,7 +3322,7 @@
> 
>  	       if (MINOR (rdev) >= minor_beg && MINOR (rdev) <= minor_end)
>   		 {
> -		   sprintf (name + strlen (name), "%lu", MINOR (rdev));
> +		   sprintf (name + strlen (name), "/%lu", MINOR (rdev));
>   		   break;
>   		 }                                                                                              
It's not that simple: what happens if `name' is something like "ptys"
or "tty"?  We need to generate "ptys2" and "tty39" for them, not
"ptys/2" and "tty/39".

So a more complex logic is required here.

Faced with this difficulty, I decided not to bother, since the value
of `ttname' is not documented to return a valid file name.

Perhaps some Linux guru (which I ain't) can suggest an easy solution.
This bug report was last modified 14 years and 12 days ago.

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