help-emacs-windows
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Re: [h-e-w] c:/.emacs.d/server' is unsafe


From: Gamoto
Subject: Re: Re: [h-e-w] c:/.emacs.d/server' is unsafe
Date: Fri, 11 Mar 2011 23:38:47 +0100

Eli Zaretskii,

I read somewhere that a file called "server" should be created in the 
.emacs.d/server folder.
This folder is empty for me.
Is it always a path or permission problem ?


Gamoto

=================================
  
== En réponse au message du 11-03-2011, 19:39:56 ==

>> From: Ben Key <address@hidden>
>> Date: Fri, 11 Mar 2011 10:42:25 -0600
>> 
>> My guess is that the reason it did not work is that Gamoto was attempting to
>> use a directory other than "C:\Documents and
>> Settings\Administrator\Application Data" as his home directory.
>
>As you saw in the meantime, that is not the case.  It was a simple
>cockpit error.  Files and directories owned by Administrator can live
>in any directory on the disk,not just under "Application Data".
>
>> Windows uses special security settings for the Application Data
>> directory that are intended to ensure only the user the Application
>> Data directory is for has access to it
>
>Well, that's not really accurate (e.g., I can easily access that
>directory of Administrator on my system, although I'm not
>Administrator).  That's because Windows allows access to files and
>directories not only according to the rights explicitly stored with
>the file's security information, but also via implicit access rights
>due to user's being part of certain user groups.  For example, all
>members of the "Users" group can access all the files of any other
>member of "Users", even though that user's name is not recorded in the
>ACLs of the file with any kind of access rights.
>
>But that is another theme for another rainy day.  It isn't really
>relevant to the issue at hand.  I mentioned it to make a point: that
>on Windows, creating a directory that is accessible only by a single
>user is a highly non-trivial task.
>
>> If I set HOME to "c:\" and start Emacs, and then call server-start,
>> the server directory is created in "c:\.emacs.d\server" and I get
>> the server unsafe message.
>
>I got tired of answering questions about this warning, so I modified
>server.el in the repository a few hours ago to consider this situation
>(whereby the user is Administrator whereas the directory owner is
>Administrators) as safe.  I hope this will finally put this issue to
>rest.
>
>Btw, there are quite a few places in Emacs Lisp sources where the
>user's UID is compared to zero, the assumption being that a UID of
>zero means the super-user.  This is incorrect on Windows, where the
>corresponding UID is 500 (while zero is a UID of Everybody, a user who
>has no rights at all).  Perhaps someone would want to write a function
>root-uid-p, say, that will DTRT both on Posix and Windows, and then
>fix all those places?
>

========================================

reply via email to

[Prev in Thread] Current Thread [Next in Thread]