out-of-tree kernel {module, exploit} development tool
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README.md

out-of-tree/qemu

Qemu wrapper for kernel-related CI tasks. Supports GNU/Linux and macOS.

Features:

  • Uses upstream virtualization -- KVM in GNU/Linux and Hypervisor.framework in macOS.
  • Run files and kernel modules directly from local filesystem. No need to copy byself!
  • Run commands inside qemu virtual machine at the same way as you run in it locally.

Installation

$ go get code.dumpstack.io/tools/out-of-tree/qemu

Generate root image

First of all we need to generate rootfs for run qemu.

Install qemu and docker

GNU/Linux
$ sudo apt install -y qemu docker
macOS

Note: qemu on macOS since v2.12 (24 April 2018) supports Hypervisor.framework.

$ brew install qemu
$ brew cask install docker

Generate image

$ cd $GOPATH/src/code.dumpstack.io/tools/out-of-tree/tools/qemu-debian-img
$ ./bootstrap.sh

Fill configuration file

$ $EDITOR $GOPATH/src/code.dumpstack.io/tools/out-of-tree/qemu/test.config.go

Run tests

$ go test -v

Usage

$ go get code.dumpstack.io/tools/out-of-tree/qemu

Minimal example:

kernel := qemu.Kernel{
    Name:       "Some kernel name",
    KernelPath: "/path/to/vmlinuz",
    InitrdPath: "/path/to/initrd", // if required
}
q, err := qemu.NewSystem(qemu.X86_64, kernel, "/path/to/qcow2")
if err != nil {
    log.Fatal(err)
}

if err = q.Start(); err != nil {
    log.Fatal(err)
}
defer q.Stop()

output, err = q.Command("root", "echo Hello, World!")
if err != nil {
    log.Fatal(err)
}

// output == "Hello, World!\n"

More information and list of all functions see at go documentation project, or just run locally:

$ godoc code.dumpstack.io/tools/out-of-tree/qemu