From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-out-no.shaw.ca (smtp-out-no.shaw.ca [64.59.134.13]) by sourceware.org (Postfix) with ESMTPS id 6F650385E006 for ; Thu, 26 Mar 2020 19:12:34 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 6F650385E006 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=SystematicSw.ab.ca Authentication-Results: sourceware.org; spf=none smtp.mailfrom=brian.inglis@systematicsw.ab.ca Received: from [192.168.1.114] ([24.64.172.44]) by shaw.ca with ESMTP id HXvcj5gFf62brHXvdjmz3P; Thu, 26 Mar 2020 13:12:33 -0600 X-Authority-Analysis: v=2.3 cv=LKf9vKe9 c=1 sm=1 tr=0 a=kiZT5GMN3KAWqtYcXc+/4Q==:117 a=kiZT5GMN3KAWqtYcXc+/4Q==:17 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=IkcTkHD0fZMA:10 a=fjDFcf429ns8VtWUCqQA:9 a=QEXdDO2ut3YA:10 Reply-To: cygwin@cygwin.com Subject: Re: WSL symbolic links To: cygwin@cygwin.com References: <294944bd-757e-4bb8-6bcc-ceb8d9190ef9@towo.net> <20200326110059.GG3261@calimero.vinschen.de> From: Brian Inglis Autocrypt: addr=Brian.Inglis@SystematicSw.ab.ca; prefer-encrypt=mutual; keydata= mQENBFg15Q0BCADc1LTYJN/oVKOJoXpIo+5yy+sBv535qYNRh5CFqp3pPZwIy6oILNKprWph 8J+sXMqYd5H0G1jMDlXendiQbn9SiORuqI7xkV8vzguoFEMhNTxnO1pOQjqRnEnG/W7/5Yy+ DkcCv+Y4O3NX3wol8yP+FaEx4EEEifaO5ZhC1U/ilvHvxE0wjNhRG6AqlvqX6J09bxkJC8Xd 00MZWotDHtiq/wnd8YqyDmf0aJceGxSetHnqn/Cs3WiylEEUy2x/FqKbsBxUJHGQeeRTFAW1 ii08djCemxdE+romE/M9J9CVisSZImbXMSilX6Z2Qtz0lYPkY0EqbiKo8o9zlkIPhaqJABEB AAG0REJyaWFuIEluZ2xpcyAoU3lzdGVtYXRpYyBTb2Z0d2FyZSkgPEJyaWFuLkluZ2xpc0BT eXN0ZW1hdGljU1cuYWIuY2E+iQFVBBMBAgA/AhsDBgsJCAcDAgYVCAIJCgsEFgIDAQIeAQIX gBYhBEy/sJ49FaN/AfIQJjY9ewCxhxqTBQJai9F5BQkNRMzsAAoJEDY9ewCxhxqThnAH/Rau 2+nxwRYdOHDkvMJSyJZUxowkxxzfttQVfxrZIhooF99LGqd3ANltSidybJAbKDLoH+5jRvWF fobzOs93Uw73/52Rurv0nY40mnCAw2vE3JNYgWm8V09Ff4J64ElylrAAU60XoUxMD8Tbflby fVu3LO74pR/hCByNGK019TXJhIPfSU51hXQwLgqAKT4FRGw5gYyqCSS5zoRpa/zNENAPKG/g 5H8ar58eJB9QyJA4iNTLa/3rPF/kO9MqfRLlBLvmyveyYOcGs5wOgjt/RT2eA3Zun18l7EIE 2L2J1tbqLmSpswSW3URnW3KsfgILNC9pAVR00xvO09ulrUXiOX65AQ0EWDXlDQEIAM5GX98w WEzP1jyuWGfNI0s2lUJDTVH1WLpg1N+lQ9sjwCVBeJEdhtZYU7VsgmjPj+H0tkBFYe2olAkk BAmdP7yrqUTK5zw12kf5BJeF94cikGcFRCvdGVk9/uSfy3HZePvr8NV5LPCxLIE6bJCS8L5A CgdNkrD3CLM1zePyiQ0dQ3+6Bjq27b3Y1UauiyKlOquCVkfrDk/y3OfFhbiJX8pwM0mICyls 8p9iM7yg+g1PbdoA99OrFc7JKllHRGDLQ0B/HKAPgNnLCenzDuV/d+N1RDbbpa0c/uvmoptR Aejlq3HszXYQ9wTmu8OwVSITSkzgP1lKzyDPZS9SGvlrQp8AEQEAAYkBPAQYAQIAJgIbDBYh BEy/sJ49FaN/AfIQJjY9ewCxhxqTBQJai9GnBQkNRM0aAAoJEDY9ewCxhxqTuL8H/ivw0VXX lQW4c9O8XsMafDcEyV23MH4fdZACss+ZWluda7xIRo78GCLXxARHwJdOE9Jk9+/fDQOTZd4m KW0trLCfWvJnwNJfOLbqse7eydvgdj2UrTpy4DO/5+mAw/ilgZpEGgwMwyqb/2kFiKK7Q64B NKl8Y2kRXltaiXfqyvG2U/NiE4GOPA3yZgXs4Mzd1pzV/nkEIzGkneaeE5WGEWj/8dCnn6a3 zIuq0L59QInxKsTdt10OQiUoRKl8Nx0vDCOzMy0wlJc349gJbQBCAZcumtBBBqAzCAmJ3J7T 7ew8hznAEmOwr+LkSOdXFzEjdfTaryhN1AsRLYVUNloEWNA= Organization: Systematic Software Message-ID: <901e1c08-46cb-555b-c0d0-5bf9c726b3ca@SystematicSw.ab.ca> Date: Thu, 26 Mar 2020 13:12:32 -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: <20200326110059.GG3261@calimero.vinschen.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-CA Content-Transfer-Encoding: 8bit X-CMAE-Envelope: MS4wfDa3abWc64kS/6pxyGKjFdlz3MDVmYa8gnsnDzVjUPOwW7b1oPOovDpDedyFOrScGEjNxXFgZnZxHLGJsKIiZS0Vkfte9cwwh5sQxGkOzACpB1XFq+Zd cJkmprA1Qiq8NxHrO/IHcd8jPXBej2Ng1OKKGVJ6kEQoO7wivIGO8Nm80Lw0XKUZE1D04o8vnm7Xxg== X-Spam-Status: No, score=-28.0 required=5.0 tests=BAYES_00, BODY_8BITS, GARBLED_BODY, GIT_PATCH_2, KAM_DMARC_STATUS, KAM_LAZY_DOMAIN_SECURITY, RCVD_IN_DNSWL_LOW, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham 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@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 26 Mar 2020 19:12:35 -0000 On 2020-03-26 05:00, Corinna Vinschen wrote: > On Mar 26 10:00, Thomas Wolff wrote: >> A symbolic link created with WSL is neither interpreted in cygwin nor can it >> be deleted: >>> touch file >>> wsl ln -s file link >>> wsl ls -l link >> lrwxrwxrwx    1 towo     towo             1 Mar 26 08:56 link -> file >>> ls -l link >> -rw-r----- 1 Unknown+User Unknown+Group 0 Mar 26 00:00 link > What kind of file are they in the real world? Reparse points? If so, > what content do they have? I attached a Q&D source from my vault > of old test apps to check on reparse point content. Please compile with > gcc -g ../src/rd-reparse.c -o rd-reparse -lntdll > It takes a single native NT path as parameter, kind of like this: > ./rd-reparse '\??\C:\cygwin64\home\corinna\link' They should be WSL or Windows mklink (soft) links, and the reason why mklink was allowed unelevated in Windows 10 with Developer mode. In an *elevated* shell: $ ls -dln u -rw-r----- 1 4294967295 4294967295 0 Nov 9 06:09 u $ getfacl u getfacl: u: Permission denied $ icacls u u NULL SID:(DENY)(Rc,S,REA,WEA,X,DC) $HOSTNAME\$USER:(F) $HOSTNAME\$USER:(RX,W,DC) BUILTIN\Users:(Rc,S,RA) BUILTIN\Administrators:(RX,W,DC) BUILTIN\Users:(DENY)(S,RD,REA,X) Everyone:(RX) NT AUTHORITY\SYSTEM:(I)(F) BUILTIN\Administrators:(I)(F) $HOSTNAME\$USER:(I)(F) Successfully processed 1 files; Failed processing 0 files $ ./rd-reparse '\??\C:\...\u' ReparseTag: 0xa000001d ReparseDataLength: 5 Reserved: 0 02 00 00 00 75 -- 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.