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passt/test/passt.mbuto
David Gibson 181efaa3fa tests: Correctly handle domain search list in dhclient-script
Currently our small custom dhclient-script only handles the 'domain-name'
option, which can just list a single domain, not the 'domain-search'
option, which can handle several.  Correct it to handle both.

We also weren't emptying the resolv.conf file before we began, which
could lead to surprising contents after multiple DHCP transactions.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2022-07-22 19:41:42 +02:00

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#!/bin/sh
#
# SPDX-License-Identifier: AGPL-3.0-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="${PROGS:-ash,dash,bash ip mount ls insmod mkdir ln cat chmod lsmod
modprobe find grep mknod mv rm umount jq iperf3 dhclient hostname
sed tr chown sipcalc cut md5sum nc dd strace ping tail killall sleep
sysctl nproc tcp_rr tcp_crr udp_rr which tee seq bc}"
KMODS="${KMODS:- virtio_net virtio_pci}"
LINKS="${LINKS:-
ash,dash,bash /init
ash,dash,bash /bin/sh}"
DIRS="${DIRS} /tmp /sbin /var/log /var/run /var/lib"
FIXUP="${FIXUP}"'
cat > /sbin/dhclient-script << EOF
#!/bin/sh
LOG=/var/log/dhclient-script.log
echo \${reason} \${interface} >> \$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}" ] && hostname "\${new_host_name}"
exit 0
EOF
chmod 755 /sbin/dhclient-script
ln -s /sbin /usr/sbin
:> /etc/fstab
sh +m
'
OUTPUT="KERNEL=__KERNEL__
INITRD=__INITRD__
"