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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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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How do I tell I'm running in a chroot?

I have a unix installation that's supposed to be usable both as a chroot and as a standalone system. If it's running as a chroot, I don't want to run any service (cron, inetd, and so on), because they ...
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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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Getting “Not found” message when running a 32-bit binary on a 64-bit system

I have currently a strange problem on debian (wheezy/amd64). I have created a chroot to install a server (i can't give any more detail about it, sorry). Let's call its path /chr_path/. To make things ...
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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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Restricting an SSH/SCP/SFTP user to a directory

Is there a simple way to restrict an SCP/SFTP user to a directory? All methods that I've come across require me to set a chroot jail up by copying binaries, but I don't think that should be necessary. ...
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462 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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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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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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Are there any differences between mounting a /proc filesystem inside a chroot compared to mounting it from the outside?

Compare the following: mount -t proc none ./my_chroot/proc and: chroot ./mychroot mount -t proc none /proc
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What to use to harden Linux box? Apparmor, SELinux, grsecurity, SMACK, chroot?

I am planning to go back to Linux as a Desktop machine. I would like to make it more secure. And try a few hardening techniques, especially since I plan to get my own server. What would be a good, ...
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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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Is there a pbuilder-like environment for RedHat?

I would like to know if is there any utility like Debian's pbuilder, to build RPM packages on RedHat using a clean environment (chroot). I've found mach which has support for something like this but ...
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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 ...