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:message-id:date:from:mime-version:to:subject
	:content-type:content-transfer-encoding; q=dns; s=default; b=HcY
	eCdV08AQDLqf3KauFemPV4VAFo797TiLjqknKEcKdZcDsSpEdJ/oepex9kzfH2Cz
	Cv8/nnB0RdRSAj1tpWgeTb8bINN5+x4GjyAUVKMYh0XYCm7w6pmp7WI8yOcZaLBL
	v7ytcpejOLt35FG+o0bU0qoMbR4WK2v+Cvcka66c=
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:message-id:date:from:mime-version:to:subject
	:content-type:content-transfer-encoding; s=default; bh=uK/Nrf2Bz
	JxExX3+J5E3D1f8wGs=; b=ZpKTKn70clI/5NjLuraeqmZwiDMwQJorHvXau/GkQ
	0b4rK23TQpTrejyTK9NiGDojHik8ys4ePuY7y875Wv0DfR4SeXSqu9o0gc/VzSBo
	L/OxUmWiGrtQ8uz/U6M44pPnD+8u+5SFbRulVV2eGA74M5NCOOW5x01f/ujZRpwU
	KI=
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
Authentication-Results: sourceware.org; auth=none
X-Virus-Found: No
X-Spam-SWARE-Status: No, score=-0.8 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.2
X-HELO: mout.kundenserver.de
Message-ID: <54D7EB8E.8070308@towo.net>
Date: Mon, 09 Feb 2015 00:04:46 +0100
From: Thomas Wolff <towo AT towo DOT net>
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0
MIME-Version: 1.0
To: cygwin AT cygwin DOT com
Subject: execlp/execvp needs case-correct PATH
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 8bit
X-UI-Out-Filterresults: notjunk:1;
X-IsSubscribed: yes

With a Windows case sensitive file system (and according mount flags
for /cygdrive), the PATH does not properly reflect casing of the actual
directories (e.g. C:\WINDOWS vs. C:\Windows, thanks MS...).
However, the shell finds programs anyway, like e.g. notepad.
The exec*p system calls, on the other hand, do not find a program in this
case as demonstrated by the attached test program.
This is in contrast to the Linux (and POSIX?) manual page which claims
„The execlp(), execvp(), and execvpe() functions duplicate the actions
of the shell in searching for an executable file …“

Thomas

--
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