Date: Wed, 23 Jan 2002 19:45:02 +0100 (CET) From: Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at> To: Ruslan Ermilov <ru@freebsd.org> Cc: freebsd-bugs@freebsd.org Subject: Re: bin/34159: chroot man page-implementation mismatch Message-ID: <Pine.BSF.4.44.0201231932040.32692-100000@naos.dbai.tuwien.ac.at> In-Reply-To: <20020123201330.A25404@sunbay.com>
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On Wed, 23 Jan 2002, Ruslan Ermilov wrote:
> The point here is that chroot(8) doesn't have a code that prevents it
> from working under non-root, but chroot(2) does. chroot(8) can be
> EXECUTED by a regular user too, but the result will be different.
> Also, chroot(8) behaves differently under jails.
Ah, I see! You have to admit this is not immediate for someone who's
really a FreeBSD guru, though.
> I disagree. It's clear that "chroot(8) changes its root directory to
> that specified, and then executes the command or a shell".
Could I convince you to accept/install the following patch? (It makes
it more clearly, and you used "then" in your description as well.) ;-)
Index: chroot.8
===================================================================
RCS file: /sw/FreeBSD/CVSUP/src/usr.sbin/chroot/chroot.8,v
retrieving revision 1.9
diff -u -3 -p -r1.9 chroot.8
--- chroot.8 2002/01/22 10:44:02 1.9
+++ chroot.8 2002/01/23 18:29:36
@@ -47,7 +47,7 @@ The
.Nm
command changes its root directory to the supplied directory
.Ar newroot
-and exec's
+and then exec's
.Ar command ,
if supplied, or an interactive copy of your shell.
.Sh ENVIRONMENT
>> Also, the documentation does not make it clear that "your shell"
>> apparently refers to the shell in /etc/passwd, not the shell you're
>> currently running.
> How it could be unclear from reading the ENVIRONMENT section that
> chroot(8) runs ${SHELL} or /bin/sh if SHELL is unset?
I must have been blind, sorry. How about the following?
Index: environ.7
===================================================================
RCS file: /sw/FreeBSD/CVSUP/src/share/man/man7/environ.7,v
retrieving revision 1.17
diff -u -3 -p -r1.17 environ.7
--- environ.7 2001/07/14 19:41:13 1.17
+++ environ.7 2002/01/23 18:41:42
@@ -187,6 +187,7 @@ and
unless you know what you are doing.
.Sh SEE ALSO
.Xr cd 1 ,
+.Xr chroot 8 ,
.Xr csh 1 ,
.Xr ex 1 ,
.Xr login 1 ,
@@ -198,7 +199,8 @@ unless you know what you are doing.
.Xr setlocale 3 ,
.Xr system 3 ,
.Xr termcap 3 ,
-.Xr termcap 5
+.Xr termcap 5 ,
+.Xr vi 1
.Sh HISTORY
The
.Nm
(Adding chroot may not be that important, but as ex(1) is mentioned
exactly once, also vi(1), which is mentioned at the same place, should
be cross-referenced.)
Gerald
--
Gerald "Jerry" pfeifer@dbai.tuwien.ac.at http://www.dbai.tuwien.ac.at/~pfeifer/
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