A chroot on Unix operating systems is an operation that changes the apparent root directory for the current running process and its children. A program that is run in such a modified environment cannot name (and therefore normally not access) files outside the designated directory tree.

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What to do to run GUI Java app in chrooted environment?

In my case Java app is JDownloader. I prepared chroot environment as explained here: http://www.0x61.com/forum/post5240333.html#p5240333 and here: http://interreality.org/~reed/java-chroot.html ...
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1answer
376 views

Does OpenSSH_5.9p1 support Chrooted SSH?

Lately i upgraded my SSH server with OpenSSH_5.9p1 and tried to setup chrooted SFTP/SSH. So far i managed to setup chrooted access only for SFTP using new feature of openssh5.9p1: Match User ...
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1answer
801 views

SFTP: give user access to folder outside home

I have a machine running Ubuntu 12.04 LTS with OpenSSH server installed. I have created a user with a jailed home account. When I log in with the user's account, I can only access his home (duh). ...
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3answers
2k views

Display X applications on an Android system

Host system: Android 3.2.1 Honeycomb Chroot system: Debian Testing lxde Hardware: Asus eee pad transformer tablet nvidia arm architecture Note 1: The Debian system boots on this hardware, thus it ...
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How to find current chroot jail path on Linux <2.6.26

While running kernel 2.6.26 or newer it's possible to get the path of the current chroot jail by comparing the mountinfo of the current process and the init process. Is there a way to get the same ...
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1answer
2k views

How to run Firefox in a chroot jail?

I've got this chroot jail all setup. I try to run Firefox in it, and get the message: "Gtk-WARNING ** cannot open display: " I know I have to invoke Firefox with --display= something. I probably ...
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3answers
907 views

Is there a linux vfs tool that allows bind a directory in different location (like mount --bind) in user space?

For a user process, I want to mount a directory in other location but in user space without root privilieges. Something like mount --bind /origin /dest, but with a vfs wrapper. Like a usermode ...
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2answers
1k views

GParted LiveCD: Is there a version with a 64-bit kernel?

I'm trying to chroot with the GParted LiveCD onto an existing 64-bit system, attempting to fix grub.
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1answer
336 views

MBR is toast or at least Grub is

This started after some kernel trouble that I left alone for a while. I had miscompiled a kernel then tried to re-compile it and started to organize a list of boot options in grub for differently ...
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1answer
598 views

Building GCC inside a chroot from source

In a previous question I asked about creating a chroot that simulates my embedded device environment. It was suggested that I build from source GCC and binutils first inside my chroot. To attempt this ...
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1answer
608 views

Preventing ChromeOS from blanking the screen when working on a different tty

I am running Archlinux in a chroot alongside Chrome OS on a chromebook. The original project is there, my fork of it is here (mostly similar). The issue is that the display power management of Chrome ...
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1answer
627 views

Start SSH session in some other directory than their home directory and lock them there

I've set up a SSH server which I've let some friends log into, both via SSH and FileZilla. I put a symbolic link to two hard drives in their home directories so that they could access some files. This ...
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1answer
316 views

Can you Chroot a program from an OpenVZ environment?

I just recently purchased a Virtual Private Server, and it is OpenVZ virtualization. I am setting up my LAMP stack, and in the past I have always just set up my BIND dns set up in a chrooted ...
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1answer
2k views

Is it possible to make a chroot -bind with debian under mac os x lion?

Within Linux (e.g. Ubuntu), it is possible to mount partitions like /home, /etc, /lib from another Linux machine and bind them to /proc /sys /tmp to the host's to actually take control of the mounted ...
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3answers
452 views

Servers running from chrooted Ubuntu on HP TouchPad? [closed]

The problem: servers appear to be broken inside my Ubuntu chroot. No matter what kind of server I try to run, they all seem unresponsive (VLC server won't respond to client, mkRemote doesn't move the ...
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2answers
1k views

OpenSSH, chroot user: Root needs to own the user directory, is there any consequence?

I want to create an account for my friend on my computer, but I don't want my friend to be able to view all my files. I saw that with OpenSSH, there is an option for that. Inside the SSHD ...
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5answers
2k views

How to completely hide stuff from a user?

I want to let some of my friends access my computer by making them user accounts. They will mostly access my computer by sftp and ssh, but they could also sometimes access it at my home. However I ...
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1answer
823 views

When can one reboot from inside a chroot environment?

Sometimes when I chroot into some folder , I could use reboot to reset my box, but sometimes I can't. So I want to know why I could do that sometimes and why. UPDATE The chroot environment is ...
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2answers
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Disable direct login for normal users (like oracle) in linux but allow scp and sftp?

Is it possible to disable direct login for normal users (like oracle) in linux but allow scp and sftp for that use?
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2answers
824 views

Is there a drawback when using a chroot in high performance computing?

My (small) company uses an out-of-date linux (centos) software stack to run a proprietary software on a small cluster. Understandingly, IT is reluctant to upgrade since everything works now. I'd like ...
3
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0answers
573 views

Slow system after running a KDE GUI application from a Debian Squeeze chroot

I have a PC with Ubuntu 11.04 and a Debian Squeeze chroot installed in it. As soon as I start any KDE application from within chroot (and installed there), e.g. Kompare for viewing git diff output, ...
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1answer
272 views

Backing up chroots for host reinstall

I've had my workstation for a couple of years now and its slowly become a complex beast, taking on many roles for my dev and test work. I have done some research and was thinking of setting up some ...
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1answer
649 views

Allowing access to single folder in centos

I have a java application in /usr/local that keeps writing to a text file on a daily basis. I need a particular user to be able to read this file. What is the best way to do that? I have recently read ...
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1answer
473 views

Ubuntu 11.10 SFTP chroot jail problem

I am creating a SFTP server with Chroot Jail. The problem is user cannot log into the home directory. I need to keep ChrootDirectory value to one directory above the user's home directory ...
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2answers
827 views

Mount points in a chroot

I have some device (say /dev/sda1) mounted at /home/user1. I also have a full Linux system under /tmp/chroot, and the directory /tmp/chroot/home contains only one directory named user2. If I chroot ...
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1answer
511 views

How to disable certain system calls for a given user?

I am creating a web app similar to codepad and for each run-action my app copies a directory (/home/radeks/voidptr/private/chroot-root) to /tmp/voidptr/[random-id]/chroot-root. This chroot directory ...
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1answer
862 views

Is there an ARM repository for Arch Linux?

I'm trying to create a chroot for my rooted android phone. I want to do this with the arch_bootstrap.sh script found on the wiki but I can't find an ARM repository. My PC is x86_64 Arch Linux and my ...
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1answer
367 views

Debian unstable chroot security issues

This page describes how you can use the debootstrap utility to install a base Debian unstable/sid system on an existing Linux machine. The new install is accessible using chroot. When doing this, ...
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1answer
1k views

Chroot debian squeeze for shell access

A user requires shell access to an Ubuntu server from the WAN side. There are many shell accounts with simple passwords. So shell port (port 22) is blocked in the firewall. For my WAN side user I am ...
2
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1answer
319 views

How to add another domain to my chrooted named server

Firstly I successfully have a domain working in a chroot named. There are files in /var/named/chroot/var/named called mydomain.com.db and named.local and named.root. Also in /var/named/chroot/etc ...
3
votes
1answer
6k views

Chrooted SFTP with full access to SSH stopped working (Debian)

I've got a home server on Debian 6 for backups. I'd like to setup chrooted SFTP environment with SSH access for some users (only for my knowledge, there are two users now). It almost works or rather ...
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1answer
2k views

deleting a 'file' under /proc or /dev

I am using a cowdancer/debootstrap setup to generate a chroot. Of course, as I iterate, I generate some chroot configurations that are bad. I have found myself in an awkward situation where I have ...
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2answers
354 views

Swap root at runtime

I am developing an embedded Linux system. The system is usually installed by creating a ISO file which is written to a USB stick the board can boot from. To make the installation possible to do ...
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2answers
1k views

Providing /bin and /lib inside a chroot jail

I need to be able to provide the /bin and /lib directories inside a chroot jail so that programs can dynamically link properly. Is there a way to accomplish this without making a copy of the /bin and ...
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3answers
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chroot “jail” - what is it and how do I use it?

I have heard/read a lot about the chroot jail under linux but have never yet used it (I use Fedora day-to-day), so what is a chroot "jail"? When and why might I use it/not use it and is there anything ...