diff options
Diffstat (limited to 'tools/create-gce-image.sh')
| -rwxr-xr-x | tools/create-gce-image.sh | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/tools/create-gce-image.sh b/tools/create-gce-image.sh index d569abcb9..09c51983e 100755 --- a/tools/create-gce-image.sh +++ b/tools/create-gce-image.sh @@ -2,8 +2,8 @@ # Copyright 2016 syzkaller project authors. All rights reserved. # Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file. -# create-gce-image.sh creates a minimal bootable image suitable for syzkaller/GCE. -# The image will have password-less root login with a key stored in key file. +# create-gce-image.sh creates a minimal bootable image suitable for syzkaller/GCE in ./disk.raw file. +# The script can also create/delete temp files in the current dir. # # Prerequisites: # - you need a user-space system, a basic Debian system can be created with: @@ -22,11 +22,6 @@ # then its contents will be appended to the kernel command line. # If MKE2FS_CONFIG env var is set, it will affect invoked mkfs.ext4. # -# Outputs are (in the current dir): -# - disk.raw: the image -# - key: root ssh key -# The script can also create/delete temp files in the current dir. -# # The image then needs to be compressed with: # tar -Sczf disk.tar.gz disk.raw # and uploaded to GCS with: @@ -37,8 +32,7 @@ # qemu-system-x86_64 -hda disk.raw -net user,host=10.0.2.10,hostfwd=tcp::10022-:22 \ # -net nic -enable-kvm -m 2G -display none -serial stdio # once the kernel boots, you can ssh into it with: -# ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o IdentitiesOnly=yes \ -# -p 10022 -i key root@localhost +# ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o IdentitiesOnly=yes -p 10022 root@localhost set -eux @@ -146,15 +140,19 @@ fi echo -en "127.0.0.1\tlocalhost\n" | sudo tee disk.mnt/etc/hosts echo "nameserver 8.8.8.8" | sudo tee -a disk.mnt/etc/resolve.conf -echo "ClientAliveInterval 420" | sudo tee -a disk.mnt/etc/ssh/sshd_config echo "syzkaller" | sudo tee disk.mnt/etc/hostname -rm -f key key.pub -ssh-keygen -f key -t rsa -N "" -sudo mkdir -p disk.mnt/root/.ssh -sudo cp key.pub disk.mnt/root/.ssh/authorized_keys -sudo chown root disk.mnt/root/.ssh/authorized_keys sudo mkdir -p disk.mnt/boot/grub +# Setup ssh without key/password. +cat << EOF | sudo tee disk.mnt/etc/ssh/sshd_config +PermitRootLogin yes +PasswordAuthentication yes +PermitEmptyPasswords yes +ClientAliveInterval 420 +EOF +# Reset root password. +sudo sed -i "s#^root:\*:#root::#g" disk.mnt/etc/shadow + CMDLINE="" SYZ_CMDLINE_FILE="${SYZ_CMDLINE_FILE:-}" if [ "$SYZ_CMDLINE_FILE" != "" ]; then |