mirror of
https://passt.top/passt
synced 2025-05-28 04:17:20 +02:00
31e8109a86
Both DHCPv4 and DHCPv6 has the capability to pass the hostname to clients, the DHCPv4 uses option 12 (hostname) while the DHCPv6 uses option 39 (client fqdn), for some virt deployments like kubevirt is expected to have the VirtualMachine name as the guest hostname. This change add the following arguments: - -H --hostname NAME to configure the hostname DHCPv4 option(12) - --fqdn NAME to configure client fqdn option for both DHCPv4(81) and DHCPv6(39) Signed-off-by: Enrique Llorente <ellorent@redhat.com> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
98 lines
3.6 KiB
Bash
Executable file
98 lines
3.6 KiB
Bash
Executable file
#!/bin/sh
|
|
#
|
|
# SPDX-License-Identifier: GPL-2.0-or-later
|
|
#
|
|
# PASST - Plug A Simple Socket Transport
|
|
# for qemu/UNIX domain socket mode
|
|
#
|
|
# test/passt.mbuto - mbuto (https://mbuto.sh) profile for test images
|
|
#
|
|
# Copyright (c) 2022 Red Hat GmbH
|
|
# Author: Stefano Brivio <sbrivio@redhat.com>
|
|
|
|
PROGS="${PROGS:-ash,dash,bash ip mount ls insmod mkdir ln cat chmod lsmod
|
|
modprobe find grep mknod mv rm umount jq iperf3 dhclient hostname
|
|
sed tr chown sipcalc cut socat dd strace ping tail killall sleep sysctl
|
|
nproc tcp_rr tcp_crr udp_rr which tee seq bc sshd ssh-keygen cmp tcpdump env}"
|
|
|
|
# OpenSSH 9.8 introduced split binaries, with sshd being the daemon, and
|
|
# sshd-session the per-session program. We need the latter as well, and the path
|
|
# depends on the distribution. It doesn't exist on older versions.
|
|
for bin in /usr/lib/openssh/sshd-session /usr/lib/ssh/sshd-session \
|
|
/usr/libexec/openssh/sshd-session; do
|
|
command -v "${bin}" >/dev/null && PROGS="${PROGS} ${bin}"
|
|
done
|
|
|
|
KMODS="${KMODS:- virtio_net virtio_pci vmw_vsock_virtio_transport}"
|
|
|
|
LINKS="${LINKS:-
|
|
ash,dash,bash /init
|
|
ash,dash,bash /bin/sh}"
|
|
|
|
DIRS="${DIRS} /tmp /usr/sbin /usr/share /var/log /var/lib /etc/ssh /run/sshd /root/.ssh"
|
|
|
|
COPIES="${COPIES} small.bin,/root/small.bin medium.bin,/root/medium.bin big.bin,/root/big.bin"
|
|
|
|
FIXUP="${FIXUP}"'
|
|
mv /sbin/* /usr/sbin || :
|
|
rm -rf /sbin
|
|
ln -s /usr/sbin /sbin
|
|
cat > /sbin/dhclient-script << EOF
|
|
#!/bin/sh
|
|
LOG=/var/log/dhclient-script.log
|
|
echo \${reason} \${interface} >> \$LOG
|
|
env >> \$LOG
|
|
set >> \$LOG
|
|
|
|
[ -n "\${new_interface_mtu}" ] && ip link set dev \${interface} mtu \${new_interface_mtu}
|
|
|
|
[ -n "\${new_ip_address}" ] && ip addr add \${new_ip_address}/\${new_subnet_mask} dev \${interface}
|
|
[ -n "\${new_routers}" ] && for r in \${new_routers}; do ip route add default via \${r} dev \${interface}; done
|
|
:> /etc/resolv.conf
|
|
[ -n "\${new_domain_name_servers}" ] && for d in \${new_domain_name_servers}; do echo "nameserver \${d}" >> /etc/resolv.conf; done
|
|
[ -n "\${new_domain_name}" ] && echo "search \${new_domain_name}" >> /etc/resolf.conf
|
|
[ -n "\${new_domain_search}" ] && (printf "search"; for d in \${new_domain_search}; do printf " %s" "\${d}"; done; printf "\n") >> /etc/resolv.conf
|
|
[ -n "\${new_ip6_address}" ] && ip addr add \${new_ip6_address}/\${new_ip6_prefixlen} dev \${interface}
|
|
[ -n "\${new_dhcp6_name_servers}" ] && for d in \${new_dhcp6_name_servers}; do echo "nameserver \${d}%\${interface}" >> /etc/resolv.conf; done
|
|
[ -n "\${new_dhcp6_domain_search}" ] && (printf "search"; for d in \${new_dhcp6_domain_search}; do printf " %s" "\${d}"; done; printf "\n") >> /etc/resolv.conf
|
|
[ -n "\${new_host_name}" ] && echo "\${new_host_name}" > /tmp/new_host_name
|
|
[ -n "\${new_fqdn_fqdn}" ] && echo "\${new_fqdn_fqdn}" > /tmp/new_fqdn_fqdn
|
|
exit 0
|
|
EOF
|
|
chmod 755 /sbin/dhclient-script
|
|
ln -s /bin /usr/bin
|
|
ln -s /run /var/run
|
|
:> /etc/fstab
|
|
|
|
# sshd via vsock
|
|
cat > /etc/passwd << EOF
|
|
root:x:0:0:root:/root:/bin/sh
|
|
tcpdump:x:72:72:tcpdump:/:/sbin/nologin
|
|
sshd:x:100:100:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin
|
|
EOF
|
|
cat > /etc/shadow << EOF
|
|
root:::0:99999:7:::
|
|
EOF
|
|
chmod 000 /etc/shadow
|
|
|
|
cat > /etc/ssh/sshd_config << EOF
|
|
Subsystem sftp internal-sftp
|
|
EOF
|
|
ssh-keygen -A
|
|
chmod 700 /root/.ssh
|
|
chmod 700 /run/sshd
|
|
# Alternative location for the priv separation dir
|
|
ln -s /run/sshd /usr/share/empty.sshd
|
|
|
|
cat > /root/.ssh/authorized_keys <<EOF
|
|
'"$(cat guest-key.pub 2>/dev/null || :)"'
|
|
EOF
|
|
chmod 600 /root/.ssh/authorized_keys
|
|
chmod 700 /root
|
|
socat VSOCK-LISTEN:22,fork EXEC:"/sbin/sshd -i -e" 2> /var/log/vsock-ssh.log &
|
|
sh +m
|
|
'
|
|
|
|
OUTPUT="KERNEL=__KERNEL__
|
|
INITRD=__INITRD__
|
|
"
|