From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mailsrv.cs.umass.edu (mailsrv.cs.umass.edu [128.119.240.136]) by sourceware.org (Postfix) with ESMTPS id 7E868386F464 for ; Fri, 2 Oct 2020 18:14:44 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 7E868386F464 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=cs.umass.edu Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=moss@cs.umass.edu Received: from [192.168.0.16] (c-24-62-203-86.hsd1.ma.comcast.net [24.62.203.86]) by mailsrv.cs.umass.edu (Postfix) with ESMTPSA id 355F24023B85; Fri, 2 Oct 2020 14:14:44 -0400 (EDT) Reply-To: moss@cs.umass.edu Subject: Re: Problem with tar version 1.29 (in Cygwin 3.6 64 bit) in extracting sym-link files Cc: cygwin@cygwin.com References: From: Eliot Moss Message-ID: Date: Fri, 2 Oct 2020 14:14:44 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-3.0 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, MISSING_HEADERS, NICE_REPLY_A, RCVD_IN_DNSWL_LOW, SPF_HELO_NONE, SPF_PASS, TXREP 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@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: Fri, 02 Oct 2020 18:14:45 -0000 On 10/2/2020 12:47 PM, vinay Hegde wrote: > Hi Eliot Moss, > Thank you very much for the quick response & the information.It really helped. > I just set 'CYGWIN=winsymlinks:lnk' & I am now able to open sym-link > file. Both 'CYGWIN=winsymlinks:lnk' & 'CYGWIN=winsymlinks' are working > for me. > But it creates a shortcut(not the regular file). Hope it won't impact > my existing setup. > > But both 'CYGWIN=winsymlinks:native' (which is default I believe) & > 'CYGWIN=winsymlinks:nativestrict' are not working for me. Just to > understand, In what OS environment/File System 'native' will work? > > Regards > Vinay Hegde I run Windows 10 and that works for me. Of course below, jcontrol should be an actual file, while ControlPanel will be a symlink to it. (That particular name might behave oddly under Windows, because the Control Panel is a built in thing!) Not sure what else to say about the different forms. The lnk form, as I recall, builds a Cygwin-specific thing that Cygwin understands but Windows tools will not - they'll just think its a small ordinary file (its has within it, a few "magic" bytes then the name of the target file). You _want_ a short-cut, right? ControlPanel -> jcontrol _is_ a link. So I admit I am not fully understanding your post. Also, on this list, the custom is to bottom-post (or intersperse) replies, not to top-post. Regards - EM > On Fri, Oct 2, 2020 at 9:13 PM Eliot Moss wrote: >> >> On 10/2/2020 11:26 AM, vinay Hegde via Cygwin wrote: >>> Hi Cygwin Team, >>> In Cygwin 3.6, I am facing an issue while using tar.exe for extracting >>> .tar.z file. >>> >>> Issue summary: >>> When I use 'tar.exe' to extract the .tar.z file, it extracts all files >>> including symlinks. But symlink file size will be 0KB & it throws >>> error 'The file cannot be accessed by the system', if I try to open in >>> any Windows editor like notepad or notepad++ >>> >>> Below are the details: >>> - OS: Windows 2019 >>> - Cygwin version installed: 3.6 (tar version: 1.29) >>> - Command used to extract the tar file is: tar -zxvf jre64.tar.Z >>> - 'ls -l' on the extracted directory shows: >>> lrwxrwxrwx 1 etbuild Domain Users 8 Jul 10 2017 ControlPanel -> jcontrol >>> -rwxr-xr-x+ 1 etbuild Domain Users 7734 Mar 15 2017 java >>> -rwxr-xr-x+ 1 etbuild Domain Users 128791 Mar 15 2017 javaws >>> -rwxr-xr-x+ 1 etbuild Domain Users 6264 Mar 15 2017 jcontrol >>> >>> - As you can see 'ControlPanel' is a symlink file with 0KB >>> (8Bytes) size. This file, I cannot open in any Windows editor. It >>> throws error like ''The file cannot be accessed by the system' >>> >>> - However, I can open this file in vi editor or I can 'cat' this. >>> >>> - Earlier, I was using Cygwin version 1.7 (tar version: 1.27) & in >>> that, this issue was not there. Symlink file size was 1KB & I could >>> open it with any Windows editor. >>> >>> Please suggest what needs to be done to fix this issue. >> >> Hi, Vinay - Cygwin can use, and create, a variety of forms of links. Some of these are understood >> by Windows tools, some not. I suggest you read in the Cygwin documentation about symlinks and >> decide what kind are best for you. Then you'll need to set that up, delete the existing link, and >> re-create it. I personally run with CYGWIN=winsymlinks:native, but as we say in Internet land, YMMV. >> >> Regards - Eliot Moss