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:from:date
	:message-id:subject:to:cc:content-type; q=dns; s=default; b=RxuH
	aGRDy2Y7NssJvvnTuxPKwk0qlbvNcEutjmDGEImUMCZunXtmDcbNIPFfH/JBebH3
	/0xkuFEiTQlAvMUwK5z1IlzCmG36tWIMEzzF6SSrxUHCeJwTxKbSrGrCd8F11ZvF
	paCongxRUbM3+Jk9MgtloNkE7vkiWdJ0UQhoy4Q=
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:from:date
	:message-id:subject:to:cc:content-type; s=default; bh=xasUWNsQ2J
	3RknBNxDIT7/axxoE=; b=LLteyWV3yvc/lr9dc7hbNu7Sw7ysa+H5YLOzU08/Jq
	6uG543VniBTSgTzEJi+JM6z72EN3Iiu6xDeriH2yS4sYtU82w88yLfCF48sKfJv3
	O0AdV7sCkUcyDtLAJhtIF8jhAwU93oTWzaf4NRlJ+FzgN6vkARE1qIQ441duU0x7
	Y=
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_20,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2
X-HELO:	mail-la0-f50.google.com
X-Received:	by 10.152.28.9 with SMTP id x9mr144134lag.73.1443111206780; Thu, 24 Sep 2015 09:13:26 -0700 (PDT)
MIME-Version:	1.0
In-Reply-To:	<560366EE.5020207@tlinx.org>
References:	<CAGpXXZKUQtAbrQ80VDHZhy0aZtzG+5fDB7bcYz-kwQ3Kgx6ueQ AT mail DOT gmail DOT com> <560366EE DOT 5020207 AT tlinx DOT org>
From:	Greg Freemyer <greg DOT freemyer AT gmail DOT com>
Date:	Thu, 24 Sep 2015 12:12:47 -0400
Message-ID:	<CAGpXXZJeWs33BJi7qROduZEhTx1pXXXseTbfXu+QP8+cf_r5hQ@mail.gmail.com>
Subject:	Re: cygwin potentially corrupting permissions?
To:	Linda Walsh <cygwin AT tlinx DOT org>
Cc:	"cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
X-IsSubscribed:	yes

Linda,

We seem to travel the same mailing lists.  This is my first time to cygwin's.

I saved your script as "lsacl.txt".  Then I used "cp lsacl.txt it" to
make a copy.

The copy is permission denied for reading.  Basic ls -l shows no
difference (as expected)

$ ls -l lsacl.sh it
----rwx---+ 1 gaf None 1630 Sep 24 12:05 it
----rwx---+ 1 gaf None 1630 Sep 24 12:00 lsacl.sh

But your script does show a difference:

$ ./lsacl.sh lsacl.sh it
[u::---,g::---,g:root:rwx,g:Authenticated
Users:rwx,g:SYSTEM:rwx,g:Users:r-x,m:rwx,o:---/] lsacl.sh
[u::---,g::r-x,g:root:rwx,g:Authenticated
Users:rwx,g:SYSTEM:rwx,g:Users:r-x,m:rwx,o:---/] it

My user id is "gaf".

fyi: I thought I knew how to read an ACL, but the above makes little
sense to me.  Note I can cat out "lsacl.sh", but I can't cat out "it".

Greg

--
Greg Freemyer
www.IntelligentAvatar.net


On Wed, Sep 23, 2015 at 10:58 PM, Linda Walsh <cygwin AT tlinx DOT org> wrote:
> Greg Freemyer wrote:
>>
>> All,
>>
>> I've noticed on 2 different machines that if I copy (cp) a file I can
>> read with cygwin, I don't have permission to read the copy.
>
> ---
>         What does the acl say?
>
>         (Attached a script, lsacl, that I use -- it works
> with linux or cygwin and allows wildcards).
>
>
> #!/bin/bash
>
> ## $Id: lsacl,v 1.5 2015-08-02 10:29:25-07 law Exp law $
> # Version 2 -- try to work with getfacl on cygwin
> #
>
>
> shopt -s expand_aliases
> alias int=declare\ -i           sub=function  string=declare
>
> gfacl=$(type -P getfacl)
>
> if ! type -f cygwin 2>/dev/null ; then
>         _un_=$(type -P uname)
>         if              [[ $_un_ ]] ; then _os_=$($_un_ -o);
>         elif    [[ -e /proc/sys/kernel ]]; then _os_=Linux;
>         else    _os_=Cygwin;
>         fi
>         if              [[ $_os_ =~ Cygwin ]]; then function cygwin () {
> return 0; }
>         else    function cygwin () { return 1; }
>         fi
>         unset _un_ _os_
>         export -f cygwin
> fi
>
> if cygwin 2>/dev/null ;then
>         [[ $gfacl ]] || { printf "FATAL: Cannot find getfacl in path\n";
> exit 1; }
>         sub gfacl () { "$gfacl" "$@"; }
> else
> ## linux version has broken semantics requiring "-p"
>         sub gfacl () { "$gfacl" -p "$@" ; }
> fi
>
> export -f gfacl
>
>
> sub facl2str {
>         string fn=${1:?"Need pathname"}
>         string s1='/^\#.*$/d; /^\s*$/d; s/\s*#.*$//;
> s/^(.)(ser|roup|ask|ther):/\1:/; y/\n/,/'
>         string facl=$(gfacl -a "$fn"|sed -r "$s1"|tr "\n" ",")
>         facl=${facl%,}
>         string dacl=$(gfacl -d "$fn"|sed -r "s/^default://; $s1"|tr "\n"
> ",")
>         dacl=${dacl%,}
>         printf "[%s/%s]\n" "$facl" "$dacl"
> }
>
>
>
> int acllen=0 maxfnln=0
> #for fn in "$@" ; do if ((maxfnln<${#fn})); then maxfnln=${#fn}; fi ; done
>
> sub acl_str () {
>         if cygwin ;then
>                 perm=$(facl2str "$fn")
>         else
>                 qfn=$(printf "%q " "$fn")
>                 out="$(chacl -l "$fn")"
>                 perm="${out#$qfn}"
>         fi
>         printf "%s\n" "$perm"
> }
>
>
> for fn in "$@"; do
>         int max=40
>         perm=$(acl_str "$fn")
>         int len=${#perm}
>         if ((len>_acl_len_)); then acllen=len; fi
>         if ((acllen>max));              then acllen=max; fi
>         printf "%-${acllen}s %s\n" "$perm" "$fn"
> done
>

--
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 -