Why does a fakechroot exist? Post: 303019982

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Top Forums UNIX for Beginners Questions & Answers Why does a fakechroot exist? Post 303019982 by sreyan32 on Wednesday 11th of July 2018 11:56:15 AM

07-11-2018

Registered User

Quote:

Originally Posted by hicksd8

Such tools are to allow an (ordinary) user to create a root environment within their little bubble WITHOUT affecting anyone else on the system. It all happens within their individual user space. They do NOT get any enhanced privileges.

As I say, within their little bubble only.

For example, they could install a software package within their own 'fake root' and the install routine would be lead to believe that it was installing on the main system but it's not.

Okay, I have a couple of doubts about the whole thing.

Let me start by asking you why chroot is only permitted for root users?

What harm would there be if a normal user were to perform a chroot?

sreyan32

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LEARN ABOUT FREEBSD

chroot

CHROOT(8)						    BSD System Manager's Manual 						 CHROOT(8)

NAME

     chroot -- change root directory

SYNOPSIS

     chroot [-u user] [-g group] [-G group,group,...] newroot [command]

DESCRIPTION

     The chroot utility changes its current and root directories to the supplied directory newroot and then exec's command, if supplied, or an
     interactive copy of the user's login shell.

     If the -u, -g or -G options are given, the user, group and group list of the process are set to these values after the chroot has taken
     place.

ENVIRONMENT

     The following environment variable is referenced by chroot:

     SHELL  If set, the string specified by SHELL is interpreted as the name of the shell to exec.  If the variable SHELL is not set, /bin/sh is
	    used.

SEE ALSO

     chdir(2), chroot(2), setgid(2), setgroups(2), setuid(2), getgrnam(3), environ(7), jail(8)

HISTORY

     The chroot utility first appeared in 4.4BSD.

BSD
								   June 7, 2003 							       BSD