bin/70024: jail(8) enhancement: run program in the clean environment

[Dmitry Sivachenko]

The following reply was made to PR bin/70024; it has been noted by GNATS.

From: Dmitry Sivachenko <demon at FreeBSD.org>
To: Ruslan Ermilov <ru at FreeBSD.org>
Cc: bug-followup at FreeBSD.org
Subject: Re: bin/70024: jail(8) enhancement: run program in the clean environment
Date: Thu, 5 Aug 2004 16:43:22 +0400

 On Thu, Aug 05, 2004 at 03:23:12PM +0300, Ruslan Ermilov wrote:
 > On Thu, Aug 05, 2004 at 02:09:18PM +0400, Dmitry Sivachenko wrote:
 > > 
 > > Add -l option to jail(8).  Before running jail'ed program under
 > > specific user's credentials, clean the
 > > environment and set only a few variables.
 > > 	
 > > +.It Fl l
 > > +Run program in the clean environment.
 > > +The environment is discarded except for
 > > +.Ev HOME ,
 > > +.Ev SHELL ,
 > > +.Ev TERM
 > > +and
 > > +.Ev USER .
 > > +.Ev HOME
 > > +and
 > > +.Ev SHELL
 > > +are set to the target login's default values.
 > > +.Ev USER
 > > +is set to the target login.
 > > +.Ev TERM
 > > +is imported from your current environment.
 > > +The environment variables from the login class capability database for the
 > > +target login are also set.
 > > 
 > Not giving an administrator the choice to select which variables
 > should be leaked is not good.  How this patch is different from
 > using the "env -i ...", specifying all necessary exports?
 > 
 
 I thought about env(1).
 Convenience is the main reason for this change.
 
 This is similar to -l option of su(1) command.