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:subject:to:references:from:message-id:date
	:mime-version:in-reply-to:content-type
	:content-transfer-encoding; q=dns; s=default; b=GB993YxSBj2SNtpt
	mKEcoj+Y1mjU23Kh5VjQ9yyVBh9I78LI9ykeYSJNhB7xX7BNL+nIDVIEE8zS6uOP
	vknPuwNOnaNvY1JUD8vtj96jZUrtS+zn++XvHy4/ko9p9YOE1YI/gHScMOyRr03C
	U2uuG5z6OxsqrloL8uVfLm/tgyk=
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:subject:to:references:from:message-id:date
	:mime-version:in-reply-to:content-type
	:content-transfer-encoding; s=default; bh=ppkIwqPMxCVrseqVO95m0R
	XrFmM=; b=f6A+RRgiMG8yRwRGDhqysrg3eOxSNZBhhi7x7awXx7edeFGMih6IaJ
	kvv6VQYyX5EsTjSafCZHi87pNSQkNJwxHMCVgjxXnBnSUKvTCIysPnN/cd3NMouW
	rAKj+IWCJKIDibKqXA4Nu7B6RAYtNOxidVjVVtsYpxORmUclXGVG8=
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-Spam-SWARE-Status: No, score=-2.2 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 spammy=05082019, 05.08.2019, HX-Spam-Relays-External:sk:!192.16, H*RU:sk:!192.16
X-HELO: mout.kundenserver.de
Subject: Re: Empty file without "x" permission is successfully executable on Cygwin
To: cygwin AT cygwin DOT com
References: <BL0PR0901MB43081893EE588BDED05886BFA5DA0 AT BL0PR0901MB4308 DOT namprd09 DOT prod DOT outlook DOT com> <eeb8deb6-fc17-1ecd-fb9d-6c0882f75dc1 AT cornell DOT edu>
From: Thomas Wolff <towo AT towo DOT net>
Message-ID: <7d007c9f-e98d-f497-d706-dbf94bb563f2@towo.net>
Date: Mon, 5 Aug 2019 22:19:39 +0200
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0
MIME-Version: 1.0
In-Reply-To: <eeb8deb6-fc17-1ecd-fb9d-6c0882f75dc1@cornell.edu>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 8bit
X-IsSubscribed: yes


Am 05.08.2019 um 22:01 schrieb Ken Brown:
> On 8/5/2019 2:18 PM, Lavrentiev, Anton (NIH/NLM/NCBI) [C] via cygwin wrote:
>> Hi,
>>
>> Please consider the following shell session:
>>
>> $ cat dummy.c
>> #include <stdio.h>
>>
>> int main()
>> {
>>       return 0;
>> }
>> $ gcc -o dummy dummy.c
>> $ mv dummy.exe dummy
>> $ ./dummy
>> $ echo $?
>> 0
>> $ chmod a-x dummy
>> $ ./dummy
>> -bash: ./dummy: Permission denied
>> $ rm dummy
>> $ touch dummy
>> $ ./dummy
>> $ echo $?
>> 0
>>
>> So Cygwin lets the shell to execute a zero-sized file regardless of the "x" perm
>> (non-empty files are not executable if they do not have "x", as shown above).
> I can't reproduce this on my system.  Can you show the permissions and ACL of dummy?
>
>> There's more.  If I put some rubbish in a file, Cygwin still tries to execute it even if the "x" is not there:
>>
>> $ rm dummy
>> $ echo "1" > dummy
>> $ ./dummy
>> ./dummy: line 1: 1: command not found
> Again I can't reproduce this.
I reproduce the behaviour:
 > echo echo foo > bar
 > ls -l bar
-rw-r--r-- 1 towo None 9  5. Aug 22:18 bar
 > ./bar
foo
 >


--
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