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40 lines
1.8 KiB
Bash
Executable File
40 lines
1.8 KiB
Bash
Executable File
#!/bin/bash
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# Copyright 2016 syzkaller project authors. All rights reserved.
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# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
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# create-image.sh creates a minimal Debian-wheezy Linux image suitable for syzkaller.
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set -eux
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# Create a minimal Debian-wheezy distributive as a directory.
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sudo rm -rf wheezy
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mkdir -p wheezy
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sudo debootstrap --include=openssh-server,curl,tar,gcc,libc6-dev,time,strace,sudo,less,psmisc,selinux-utils,policycoreutils,checkpolicy,selinux-policy-default wheezy wheezy
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# Set some defaults and enable promtless ssh to the machine for root.
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sudo sed -i '/^root/ { s/:x:/::/ }' wheezy/etc/passwd
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echo 'T0:23:respawn:/sbin/getty -L ttyS0 115200 vt100' | sudo tee -a wheezy/etc/inittab
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printf '\nauto eth0\niface eth0 inet dhcp\n' | sudo tee -a wheezy/etc/network/interfaces
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echo 'debugfs /sys/kernel/debug debugfs defaults 0 0' | sudo tee -a wheezy/etc/fstab
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echo "kernel.printk = 7 4 1 3" | sudo tee -a wheezy/etc/sysctl.conf
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echo 'debug.exception-trace = 0' | sudo tee -a wheezy/etc/sysctl.conf
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echo "net.core.bpf_jit_enable = 1" | sudo tee -a wheezy/etc/sysctl.conf
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echo "net.core.bpf_jit_harden = 2" | sudo tee -a wheezy/etc/sysctl.conf
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echo "net.ipv4.ping_group_range = 0 65535" | sudo tee -a wheezy/etc/sysctl.conf
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echo -en "127.0.0.1\tlocalhost\n" | sudo tee wheezy/etc/hosts
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echo "nameserver 8.8.8.8" | sudo tee -a wheezy/etc/resolve.conf
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echo "syzkaller" | sudo tee wheezy/etc/hostname
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sudo mkdir -p wheezy/root/.ssh/
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rm -rf ssh
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mkdir -p ssh
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ssh-keygen -f ssh/id_rsa -t rsa -N ''
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cat ssh/id_rsa.pub | sudo tee wheezy/root/.ssh/authorized_keys
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# Build a disk image
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dd if=/dev/zero of=wheezy.img bs=1M seek=2047 count=1
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sudo mkfs.ext4 -F wheezy.img
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sudo mkdir -p /mnt/wheezy
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sudo mount -o loop wheezy.img /mnt/wheezy
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sudo cp -a wheezy/. /mnt/wheezy/.
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sudo umount /mnt/wheezy
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