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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Chroot Users to /opt and subdirectories [duplicate]

I'll make this short and hopefully I make sense. Im trying to give a user ssh access, but, he/she must only be able to access /opt and the few subdirectories that live under it. However, here's ...
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2answers
46 views

How to use bindfs to create a shared folder between a chroot environment and its host

As the title says. I want to use bindfs (or any viable alternative) to solve the following problem: I have a local folder that contains a maven project I am working on. However I can only build in a ...
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33 views

Is it secure to mount with defaults my /chroot partition?

I run debian with GRSECURITY patched kernel. Apache is chrooted with mod_chroot under /chroot For now I have mounted /chroot partition with defaults,nodev. However, Apache need to access ...
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44 views

Debian ARM on chroot Mumble server error

I use Debian running in a chroot next Android. $ uname -a Linux localhost 3.0.64-CM-g7e7a10d #5 SMP PREEMPT Wed Apr 8 17:34:47 BRT 2015 armv7l GNU/Linux I installed mumble server apt-get install ...
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43 views

Why does grub2-install escape chroot jail?

I have an odd experience. Scenario: I am writing a Linux installer (based on OpenSUSE 12.2) that runs in an initrd (actually initramfs), and I'm trying to update the bootloader. A copy of the ...
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799 views

No screens found error when starting fresh install of chroot debian wheezy with xfce gui

I am not an experienced Linux user, but have bought a chromebook and am now installing crouton. This is the very first thing I did with the Chromebook, so I don't think I need a powerwash. First I ...
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56 views

Setting up basic chroot environment from a fedora ISO image in Ubuntu

From a tutorial in https://help.ubuntu.com/community/DebootstrapChroot at TLDR section i was able to set up a chroot environment for 32 bit Ubuntu ISO image under 64 bit Ubuntu. Now i need to do the ...
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60 views

Linux: how to run a program with rw access to only a folder

How can I execute a program in a way that all the system is RO and only some folders are RW? Eg: steam (:P) roexec --rw ~/.steam steam Is there any tool that allows me to do this? I've tried mount ...
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179 views

Is there a “supported” way in RHEL/CentOS 7 to union-mount a directory tree on top of an NFS mount point?

I have an NFS share containing almost 500 chrooted (s)ftp user's home directories. This NFS share is mounted on several FTP servers forming a highly available FTP cluster. I would like to enable ...
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2answers
87 views

Compiling a kernel for Gentoo with my module list from Xubuntu

A while ago, I started installing Gentoo on my Xubuntu box, using a chroot from Xubuntu, following these guides: https://wiki.gentoo.org/wiki/Handbook:AMD64 ...
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62 views

Debootstrap for Backbox Error with release file

I'm trying to install a BackBox (Ubuntu based) chroot environment with debootstrap using the following command: sudo debootstrap --variant=buildd --arch i386 trusty /MYJAIL/ ...
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135 views

How can schroot works with aufs

I'm using schroot with aufs. Currently, my conf file under \etc\schroot\chroot.d looks like [trusty_chrome] description=Ubuntu 14.04 Trusty running Chrome and Adobe Flash ...
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179 views

User Acces restrict to only one folder

I am trying to establsih SFTP User rights at a server to only one folder, following the guidelines here: ...
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44 views

How to write in home user with chrooted sftp

I have a problem with chroot sftp an their home folder. I would like to write in user's home but I don't have proper permission for doing that. sshd_config Match User demo ChrootDirectory %h ...
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1answer
199 views

Can I use Apache web server in a chroot-ed environment on Gentoo? And how?

I just installed Apache for the first time on Gentoo. When I chroot into Gentoo from another OS (in this case Microknoppix) and try to start Apache (with /etc/init.d/apache2 start) I get the error ...
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32 views

Chrooting any arbitrary program using dynamic linker?

One of the problems using chroots is getting all the binaries and libraries installed. It just occurred to me that there might be another way. The TSocks project uses a technique they call "shared ...
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1answer
235 views

chroot for sftp user

I followed multiple guides on the internet on how to restrict a user so that he cannot change/see files outside of his home directory. So I created a user, let's call him john and I also created a ...
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1answer
35 views

How to correct error where 2 out of 3 users on chrooted network cannot gain write access?

I have an SFTP server running on Debian. The directory is chrooted and is set up with privileges as such: /sftp/+---testagent2----writespace 750 | 755 755 ...
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196 views

How to send a running process to jail?

"Go directly to jail; do not pass go, do not collect $200" — Monopoly Is there any way to make a running process's all future file access behave as if it has always been in a chroot environment?
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1answer
723 views

grub-install --no-floppy /dev/sda fails (Funtoo)

I am trying out Funtoo on a new machine. I've been through the installation process, as described in Funtoo Linux Installation . Specifically, the installation is done from within an existing Linux ...
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1answer
1k views

Apache + mod_fcgid + chroot with mod_security. CentOS/RHEL 6

I am trying to setup a web server running Apache + mod_fcgid + mod_security chroot enabled and having a real hard time to get this working. Apache was installed from official CentOS repo and mod_fcgid ...
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2answers
2k views

Set up chroot for LDAP users in RHEL6

I have been working on this for 2 days now and am about to give up so someone please help. I have a Red Hat 6 server joined to my active directory domain. Logins work just fine under normal ...
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1answer
900 views

Any better alternative to chroot on an OpenVZ VPS?

Are there any better alternative to chroot environment? I'm thinking about running nginx on a jailed environment. BTW, I'm on OpenVZ VPS, so modifying the Kernel is a no-no. (I think that prevents ...
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1answer
501 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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1answer
333 views

SSH minimal rights user - su only [duplicate]

Possible Duplicate: Creating a UNIX account which only executes one command I am trying to setup a user account that only has as minimal rights as possible. The user should be able to log ...
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29 views

How to pass an environment variable when change rooting?

I don't seem to be able to pass an environment variable to a chroot: $ sudo apt-get install debootstrap dchroot $ sudo debootstrap trusty mychroot $ sudo chroot mychroot /bin/bash -c "MY_VAR=5; echo ...
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2answers
527 views

Cannot create root jail

I just tried to play around with chroot command only for testing purposes, in order to create a temporary root jail, but I didn't managed to. The platform is CentOS 6.4. and I have done it numerous ...
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1answer
18 views

What happens if I mount multiple devices at the same path in chroots?

I'm trying to understand what happens if multiple change roots mount to my host's /proc directory. sudo chroot mychroot1 mount -t proc proc /proc sudo chroot mychroot2 mount -t proc proc /proc ...
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1answer
41 views

Disk ID in chroot / jail

When I print out all information about a disk /dev/sda on my host system, then I get this sort of information (I got this information with command udevadm info --query=all --name=/dev/sda): P: ...
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1answer
76 views

ARM cross compilation package not found

I'm trying for arm cross compilation on my i386 machine using sysroot and chroot.I want to set environment variables like PKG_CONFIG_PATH to sysroot.Right now my code is not compiling because it is ...
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1answer
315 views

Can't create a minimal chroot jail

Was trying to create a minimal chroot jail. The steps followed was: Created a folder chroot Copied bash to the folder chroot Run ldd bash to know the dependencies ldd /bin/bash linux-vdso.so.1 ...
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3answers
1k views

TERM variable in chroot

I've created a chroot with the help of jailkit and now I'm trying to install some other libraries and tools. First I tried to install clear library. I've copied the file from the /bin folder and ...
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1answer
8k views

Chroot in to reinstall Grub2 reinstall, mnt/ is empty

I have a common problem: I installed Fedora 18 on my PC that has Windows on it. When I start the PC I don't get asked which system I want to boot, Windows is chosen always. So I found out that I ...
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1answer
438 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
14 views

Can't find job mysql on crouton, ubuntu precise

I'm using Ubuntu precise as chroot in my chromebook machine. I'm trying to install mysql through apt-get install mysql-server. The thing is, when I try to start it, it can't find the job: ...
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1answer
22 views

Chroot - copy or mount --bind

In every tutorial I found online about chrooting, there is part involving copying stuff into the chroot, executables, libraries and others. Why is that? Why not just mount --bind the stuff in? ...
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1answer
17 views

Pass environment variables to clean chroot in Arch

I am writing a PKGBUILD for Arch Linux. The package is large and compressing/uncompromising it take considerable time for limited space savings and I would like to turn it off while I am writing the ...
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25 views

Running a DE in chroot?

I'm looking to run a desktop environment inside of chroot using Xnest. So far I've gotten Xfce to work but everything else not so much. Both cinnamon and gnome fail to run. Cinnamon gives me this ...
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36 views

Is possible to have full guest system under host installed via DebootstrapChroot?

My goal is installing Ubuntu 14.04.2 LTS under Debian 7 wheezy with full GNOME Desktop. I know I can use use tools like VirtualBox etc. but it seems like overhead. To be more precise under this Ubuntu ...
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94 views

Synology jailkit debian cron debootstrap

I have a Synology NAS. For advanced using of my server, I installed a debian with chroot-jailkit and debootstrap. I follow those instructions (in french sorry) This is working really fine. I have ...
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96 views

Android chroot Debian

I have a armv7l embedded device with 3 usb ports and a sd card slot. The OS of the device is android with a Debian OS in chroot. Via the Debian I can ssh into the device and breakout the chroot to ...
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1answer
324 views

Docker in Crouton - VFS consuming astronomical amounts of space

I'm attempting to help out a roommate who has installed Kubuntu on his Chromebook using Crouton (it's basically just a fancy chroot run within ChromeOS). I helped him get the Docker daemon running, ...
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202 views

restrict ssh access to /bin and using bash as a shell

I want to restrict my admin user to /bin directory while permitting to use bash as a shell via ssh. This is in my sshd_config file: Match User admin ChrootDirectory /bin X11Forwarding no ...
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174 views

How do I get back into crouton on a Chromebook?

I installed crouton with the Unity interface like in this tutorial. I tried to install Gimp with the terminal after two months of use and it froze so I quit the terminal and went out of ...
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1answer
102 views

How can I convert a chroot into a GRUB2 bootable ISO image?

Say I have a chroot containing what will be a working Linux system, and some additional init scripts to mount an overlay filesystem (e.g. AUFS) over it. I've also generated a GRUB2 boot menu. What ...
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122 views

Where to create virtual link for chroot?

I've tried to pass this step of lfs but when i put: chroot "$LFS" /tools/bin/env -i I got: chroot: failed to run command '/tools/bin/env': No such file or directory So i search about it and ...
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63 views

Are system calls available in a chroot environment?

I'm experiencing a lot of compilation errors regarding missing system calls (e.g. error: '__NR_name_to_handle_at' undeclared (first use in this function)) with different projects (ganesha 2.1.0 ...
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1answer
412 views

Can I use a shell or python script to execute commands in a chroot?

I need: to make a shellscript which can chroot into a linux environment and run a command there. I am using: arch-chroot (on the arch linux livecd)
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1answer
711 views

Run Java in a chrooted jail

I'm on a CentOS 6.5 machine with Plesk Panel which I used to create a chrooted environment for a user who can access it via ssh. I'm not a big expert but somehow I managed to let him use some basic ...
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1answer
59 views

Sandbox alike solution for linux

I wonder if there is a kind of a sandboxing solution for linux, sometimes there is more than one app that is candidate to solve my problems, in that case I want to try all of them to get the one which ...