delorie.com/archives/browse.cgi   search  
Mail Archives: cygwin/2020/03/18/21:26:13

X-Recipient: archive-cygwin AT delorie DOT com
X-Original-To: cygwin AT cygwin DOT com
Delivered-To: cygwin AT cygwin DOT com
DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org DF452381DCF6
Authentication-Results: sourceware.org; dmarc=none (p=none dis=none)
header.from=SystematicSw.ab.ca
Authentication-Results: sourceware.org;
spf=none smtp.mailfrom=brian DOT inglis AT systematicsw DOT ab DOT ca
X-Authority-Analysis: v=2.3 cv=OubUNx3t c=1 sm=1 tr=0
a=kiZT5GMN3KAWqtYcXc+/4Q==:117 a=kiZT5GMN3KAWqtYcXc+/4Q==:17
a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=IkcTkHD0fZMA:10 a=-KzCp02LUKhzKosmicwA:9
a=QEXdDO2ut3YA:10
Subject: Re: crontab message "must be privileged to use -u"
To: cygwin AT cygwin DOT com
References: <1575279001 DOT 20200318225451 AT yandex DOT ru>
<87a74dtnwa DOT fsf AT Rainer DOT invalid> <1777191824 DOT 20200319000626 AT yandex DOT ru>
<875zf1tka7 DOT fsf AT Rainer DOT invalid>
From: Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
Autocrypt: addr=Brian DOT Inglis AT SystematicSw DOT ab DOT ca; prefer-encrypt=mutual;
keydata=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Organization: Systematic Software
Message-ID: <da616bfd-93d5-28ff-ccdd-6f9cb0c9803e@SystematicSw.ab.ca>
Date: Wed, 18 Mar 2020 19:25:20 -0600
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101
Thunderbird/68.6.0
MIME-Version: 1.0
In-Reply-To: <875zf1tka7.fsf@Rainer.invalid>
X-CMAE-Envelope: MS4wfK2cGc3C/iehTEYyLVHx4XBwUTTTqrHyIep4JEhVyE8TDvmxYqy/BEZEuQAfmjXjvn4jcuQmVnTiTr8wqUMhw9ntOqUR4DmuUiR5x7tuJUQkgFKsIrjc
weh4IjbAt69EZvbTkN5mehZ2saYYfqcCDhmyzocCpgzznK4QProlDq8YMxAqkaqas66c0OorqV68+g==
X-Spam-Status: No, score=0.3 required=5.0 tests=KAM_DMARC_STATUS,
KAM_LAZY_DOMAIN_SECURITY, RCVD_IN_DNSWL_LOW, SPF_HELO_NONE,
SPF_NONE autolearn=no autolearn_force=no version=3.4.2
X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on
server2.sourceware.org
X-BeenThere: cygwin AT cygwin DOT com
X-Mailman-Version: 2.1.29
List-Id: Cygwin mailing list <cygwin.cygwin.com>
List-Unsubscribe: <http://cygwin.com/mailman/options/cygwin>,
<mailto:cygwin-request AT cygwin DOT com?subject=unsubscribe>
List-Archive: <http://cygwin.com/pipermail/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-request AT cygwin DOT com?subject=help>
List-Subscribe: <http://cygwin.com/mailman/listinfo/cygwin>,
<mailto:cygwin-request AT cygwin DOT com?subject=subscribe>
Reply-To: cygwin AT cygwin DOT com
Errors-To: cygwin-bounces AT cygwin DOT com
Sender: "Cygwin" <cygwin-bounces AT cygwin DOT com>

On 2020-03-18 15:39, Achim Gratz wrote:
> Andrey Repin writes:
>>>> I'm in an elevated shell, but it seems crontab is doing a dumb POSIX check for
>>>> EUID=0.
>>
>>> Then wrapping it with fakesu should work (no I have not tried that).
>>
>> Cool idea, but I'm not up for recompiling crontab >.>
>> Still, thanks for the reply.
> 
> If you care to look at the package listing you might have noticed that
> there is an actual fakesu binary present that I believe does exactly
> what you were asking.

Installed libfakesu - fakesu just scans source for functions it can fake - it is
undocumented and not obvious how you are meant to run it.
One library function can implement suid/sgid exe permission bits.

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

This email may be disturbing to some readers as it contains
too much technical detail. Reader discretion is advised.
--
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple

- Raw text -


  webmaster     delorie software   privacy  
  Copyright © 2019   by DJ Delorie     Updated Jul 2019