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Mail Archives: cygwin/2013/10/18/13:56:09

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Date: Fri, 18 Oct 2013 11:55:59 -0600
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To: cygwin AT cygwin DOT com
Subject: Re: lnn, a native symlink wrapper script (Was: fstab not automounting...)
References: <21087 DOT 31348 DOT 870054 DOT 516829 AT consult DOT pretender> <20131017093846 DOT GA26304 AT calimero DOT vinschen DOT de> <21087 DOT 64099 DOT 660195 DOT 262020 AT consult DOT pretender> <20131017151929 DOT GR18358 AT calimero DOT vinschen DOT de> <21088 DOT 45642 DOT 198102 DOT 464479 AT consult DOT pretender> <20131018074744 DOT GD23477 AT calimero DOT vinschen DOT de>
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On 10/18/2013 01:47, Corinna Vinschen wrote:
>    $ CYGWIN=winsymlinks:native ln -s /path/to/your/fstab /etc/fstab

I've wrapped that in a shell script called lnn ("link native"):

     #!/bin/sh
     CYGWIN=winsymlinks:native ln "$@"

Perhaps Eric Blake will add this to coreutils so we can use the shortcut 
in replies to list questions.

I tried to add a test for the SeCreateSymbolicLinkPrivilege capability 
before attempting to create the link, but this command doesn't DTRT:

	`cygpath -S`/whoami /priv

It doesn't output a line for SeCreateSymbolicLinkPrivilege at all.

The native whoami.exe has an /all flag that *does* show this privilege, 
but you only get a line for the symlink priv when you run it as 
Administrator!  How very medieval: you can't ask Windows what privileges 
you have unless you have lots of privileges already.

Complicating the matter is that whoami claims this privilege is *unset* 
on this machine, though that may be because I asked the question as 
Administrator.  Maybe the privilege doesn't need to be set as admin.

Another oddity is that the /all flag complains when run as non-admin:

	ERROR: Unable to get user claims information.

...but only when run from a Bash shell.  It runs without complaint -- 
though it still remains silent about the symlink priv -- when run from 
cmd.exe or PowerShell.

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