X-Recipient:	archive-cygwin AT delorie DOT com
DomainKey-Signature:	a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:mime-version:in-reply-to:references:date
	:message-id:subject:from:to:content-type; q=dns; s=default; b=Pd
	AYk0pwisADBbmVw93Xxt8h0TOpPZpbY2JaSh408cvoD2bj63YrfCCaUlkvz4f7fv
	vaKnQBJNgGtZqtwgsHiJRrCuNJ5cTVKzwXYavBfx5EO2DJ/V7v4yDwuCsTzeXYco
	gaXbu9aA9q8zk2hzLqtWq0dM+5C9ndkj14Ts8AnFk=
DKIM-Signature:	v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:mime-version:in-reply-to:references:date
	:message-id:subject:from:to:content-type; s=default; bh=rZzwE7IN
	oDQJIuU3Fb/KRlkvSvE=; b=Cww4X+om1FBxR9X0E5i9w0xVuHZ5PWsSYBTly+nD
	rz/jCaQopWWN9VfFflOYbT5TIRyfsuXYViDbtqvDZgaoqbrVL9hCGLQYVj5tlevF
	FpmWPZj2xvzGTKr6SGG8riOCG2XAFnNvHA76MouSHh6qt+O33ep0owkvTUEPfoK5
	Re8=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
X-Spam-SWARE-Status:	No, score=2.6 required=5.0 tests=AWL,BAYES_00,CHARSET_FARAWAY_HEADER,FREEMAIL_FROM,KHOP_THREADED,RCVD_IN_DNSWL_LOW,RCVD_IN_HOSTKARMA_YE,SPF_PASS autolearn=ham version=3.3.1
MIME-Version:	1.0
X-Received:	by 10.194.86.106 with SMTP id o10mr951857wjz.93.1371624815050; Tue, 18 Jun 2013 23:53:35 -0700 (PDT)
In-Reply-To:	<20130619020234.GA3669@ednor.casa.cgf.cx>
References:	<CABEPuQJDLjtbcLig1isTUJgb6RBCD8LNShbm9mTPcb9WM5S5fw AT mail DOT gmail DOT com> <51C0B08E DOT 8080900 AT etr-usa DOT com> <CABEPuQJJpRfPKSwZ7M0eTOdp1HxDcmvuy1=qXFHBw-8kLkZ1ZQ AT mail DOT gmail DOT com> <51C0D956 DOT 4090905 AT etr-usa DOT com> <20130619020234 DOT GA3669 AT ednor DOT casa DOT cgf DOT cx>
Date:	Wed, 19 Jun 2013 10:53:34 +0400
Message-ID:	<CABEPuQKtytz=Yjw=-S4LOKm8VGCOfa3hSgdpnhkxaWye1GoVaQ@mail.gmail.com>
Subject:	Re: Adding MSYS functionality to Cygwin
From:	=?KOI8-R?B?4czFy9PFyiDwwdfMz9c=?= <alexpux AT gmail DOT com>
To:	cygwin AT cygwin DOT com

2013/6/19 Christopher Faylor wrote:
> On Tue, Jun 18, 2013 at 04:04:06PM -0600, Warren Young wrote:
>>On 6/18/2013 13:30, ??????? ?????? wrote:
>>> 2013/6/18 Warren Young :
>>>> On 6/18/2013 12:40, ??????? ?????? wrote:
>>>>>
>>>>> 1. The correct definition of executables belonging to Cygwin DLL.
>>>>
>>>> Can you give an example of what you mean here?
>>>>
>>> All cygwin applications depends on cygwin1.dll. We need to translate
>>> arguments only for non-cygwin applications.
>>
>>It would be possible, though somewhat evil, for Cygwin's exec()
>>implementation to peek at the DLL dependency list of a program before
>>starting it, and from that infer whether it should automatically
>>translate paths.
>
> Cygwin already does this.  It detects whether the program it is about
> to run uses the Cygwin DLL and, if not, makes decisions on how to
> handle exec.  It would be relatively easy to extend this.
>

Thanks for the point Christopher.
Today I investigate in this direction and find that logic works well
except one line in spawn.cc that I think can be fixed without break
anything.

Index: cygwin/spawn.cc
===================================================================
RCS file: /cvs/src/src/winsup/cygwin/spawn.cc,v
retrieving revision 1.345
diff -u -p -r1.345 spawn.cc
--- cygwin/spawn.cc 3 May 2013 19:39:01 -0000 1.345
+++ cygwin/spawn.cc 19 Jun 2013 05:53:36 -0000
@@ -406,7 +406,7 @@ child_info_spawn::worker (const char *pr
}
else
{
- if (wascygexec)
+ if (real_path.iscygexec ())
newargv.dup_all ();
else if (!one_line.fromargv (newargv, real_path.get_win32 (),
real_path.iscygexec ()))


Regards,
Alexey.

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -