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Can you copy QEMU-arm to a chroot?
I think the problem is that you should not copy qemu-arm but qemu-arm-static. This is a static compiled executable able to run from inside the chroot without any libraries. You can also look in /proc/sys/fs/binfmt_misc if there exists a file qemu-arm.
How to create a chroot environment in QEMU?
You’ll need to configure locales so your Qemu Chroots have access to them. Otherwise, you will have to configure each Chroot’s locale individually. Thirdly we create the Chroot. This uses debootstrap to create the Chroot environment. In the command below, the Chroot will be named debian-arm64. You can change it to suit your taste.
Can you run an armhf binary in chroot jail?
Basicly we are coping over the qemu-arm-static file as “the qemu emulator for the target CPU needs to be accessible from inside the chroot jail”, so we don’t have to mount it from a host later. We could run a armhf binary our current images on a unconfigured docker host like so:
Can a QEMU emulator run an ARM64 binary?
So now what you should have is a statically linked qemu-arm64 binary (that’s the userspace arm64 emulator), and a root filesystem containing lots of arm64 binaries.
How to install QEMU static user in chroot?
Install the static qemu-user into the chroot: Mount the required directories: Chroot into the environment: Unmount stuff when not in use: The first thing that is necessary is the creation of an ebuild repository. If you have one, emerge the script: This will provide you with the crossdev script.
Do you need a static build of QEMU?
There’s one last thing to resolve: We need a static build of QEMU, so that QEMU itself doesn’t need any libraries. — With dynamic QEMU, we’d find ourselves with the need of native libraries inside the chroot, which would defeat the purpouse. Ready? Lets get started..
Can a QEMU be run as a native executable?
After setting up the association the executables can be run the same way as native executables, without specifying QEMU on the command line. There’s one last thing to resolve: We need a static build of QEMU, so that QEMU itself doesn’t need any libraries.
Is it possible to enter chroot environment with QEMU-user programs?
Edit: After the small talk with @UrichDangel, I realized, it should be possible to enter the chroot environment with qemu-user programs (qemu-arm in this case). Chroot should be executing qemu-arm compiled for your host architecture, then the qemu-arm can execute your /bin/sh (compiled for arm).
What’s the best way to debug a bash script?
One final thing to mention regarding Bash debugging options is that a file globbing option also exists and is set with -f. Setting this option will turn off globbing (expansion of wildcards to generate file names) while it is enabled.
Can a QEMU emulator run a full boot?
Together with QEMU’s user mode emulators, you’re all set. Although you usually cannot perform a ‘full’ boot (i.e. starting init and services), it is good enough to run some binaries from their ‘natural’ place, with access to all their configuration files, including some that are bind-mounted from the ‘host’ system, etc.