#!/bin/bash
-# Kernel configration options.
-OPTIONS=" IPV6 IPV6_ROUTER_PREF IPV6_MULTIPLE_TABLES IPV6_ROUTE_INFO"
+# Kernel configuration options.
+OPTIONS=" DEBUG_SPINLOCK DEBUG_ATOMIC_SLEEP DEBUG_MUTEXES DEBUG_RT_MUTEXES"
+OPTIONS="$OPTIONS IPV6 IPV6_ROUTER_PREF IPV6_MULTIPLE_TABLES IPV6_ROUTE_INFO"
OPTIONS="$OPTIONS TUN SYN_COOKIES IP_ADVANCED_ROUTER IP_MULTIPLE_TABLES"
OPTIONS="$OPTIONS NETFILTER NETFILTER_ADVANCED NETFILTER_XTABLES"
OPTIONS="$OPTIONS NETFILTER_XT_MARK NETFILTER_XT_TARGET_MARK"
OPTIONS="$OPTIONS IP_NF_IPTABLES IP_NF_MANGLE"
OPTIONS="$OPTIONS IP6_NF_IPTABLES IP6_NF_MANGLE INET6_IPCOMP"
OPTIONS="$OPTIONS IPV6_PRIVACY IPV6_OPTIMISTIC_DAD"
+OPTIONS="$OPTIONS CONFIG_NETFILTER_XT_TARGET_NFLOG"
+OPTIONS="$OPTIONS CONFIG_NETFILTER_XT_MATCH_QUOTA CONFIG_NETFILTER_XT_MATCH_QUOTA2"
+OPTIONS="$OPTIONS CONFIG_NETFILTER_XT_MATCH_QUOTA2_LOG"
+OPTIONS="$OPTIONS CONFIG_INET_UDP_DIAG CONFIG_INET_DIAG_DESTROY"
+
# For 3.1 kernels, where devtmpfs is not on by default.
OPTIONS="$OPTIONS DEVTMPFS DEVTMPFS_MOUNT"
-# How many tap interfaces to create.
-NUMTAPINTERFACES=2
+# These two break the flo kernel due to differences in -Werror on recent GCC.
+DISABLE_OPTIONS=" CONFIG_REISERFS_FS CONFIG_ANDROID_PMEM"
+
+# How many TAP interfaces to create to provide the VM with real network access
+# via the host. This requires privileges (e.g., root access) on the host.
+#
+# This is not needed to run the tests, but can be used, for example, to allow
+# the VM to update system packages, or to write tests that need access to a
+# real network. The VM does not set up networking by default, but it contains a
+# DHCP client and has the ability to use IPv6 autoconfiguration. This script
+# does not perform any host-level setup beyond configuring tap interfaces;
+# configuring IPv4 NAT and/or IPv6 router advertisements or ND proxying must
+# be done separately.
+NUMTAPINTERFACES=0
# The root filesystem disk image we'll use.
ROOTFS=net_test.rootfs.20150203
echo "Using $ROOTFS"
cd -
-# Create NUMTAPINTERFACES tap interfaces on the host, and prepare UML command
-# line params to use them. The interfaces are called <user>TAP0, <user>TAP1,
-# ..., on the host, and eth0, eth1, ..., in the VM.
-user=${USER:0:10}
-tapinterfaces=
-netconfig=
-for id in $(seq 0 $(( NUMTAPINTERFACES - 1 )) ); do
- tap=${user}TAP$id
- tapinterfaces="$tapinterfaces $tap"
- mac=$(printf fe:fd:00:00:00:%02x $id)
- netconfig="$netconfig eth$id=tuntap,$tap,$mac"
-done
-
-for tap in $tapinterfaces; do
- if ! ip link list $tap > /dev/null; then
- echo "Creating tap interface $tap" >&2
- sudo tunctl -u $USER -t $tap
- sudo ip link set $tap up
- fi
-done
+# If network access was requested, create NUMTAPINTERFACES tap interfaces on
+# the host, and prepare UML command line params to use them. The interfaces are
+# called <user>TAP0, <user>TAP1, on the host, and eth0, eth1, ..., in the VM.
+if (( $NUMTAPINTERFACES > 0 )); then
+ user=${USER:0:10}
+ tapinterfaces=
+ netconfig=
+ for id in $(seq 0 $(( NUMTAPINTERFACES - 1 )) ); do
+ tap=${user}TAP$id
+ tapinterfaces="$tapinterfaces $tap"
+ mac=$(printf fe:fd:00:00:00:%02x $id)
+ netconfig="$netconfig eth$id=tuntap,$tap,$mac"
+ done
+
+ for tap in $tapinterfaces; do
+ if ! ip link list $tap > /dev/null; then
+ echo "Creating tap interface $tap" >&2
+ sudo tunctl -u $USER -t $tap
+ sudo ip link set $tap up
+ fi
+ done
+fi
-# Exporting ARCH=um SUBARCH=x86_64 doesn't seem to work, as it "sometimes" (?)
-# results in a 32-bit kernel.
+if [ -z "$KERNEL_BINARY" ]; then
+ # Exporting ARCH=um SUBARCH=x86_64 doesn't seem to work, as it "sometimes"
+ # (?) results in a 32-bit kernel.
-# If there's no kernel config at all, create one or UML won't work.
-[ -f .config ] || make defconfig ARCH=um SUBARCH=x86_64
+ # If there's no kernel config at all, create one or UML won't work.
+ [ -f .config ] || make defconfig ARCH=um SUBARCH=x86_64
-# Enable the kernel config options listed in $OPTIONS.
-cmdline=${OPTIONS// / -e }
-./scripts/config $cmdline
+ # Enable the kernel config options listed in $OPTIONS.
+ cmdline=${OPTIONS// / -e }
+ ./scripts/config $cmdline
-# olddefconfig doesn't work on old kernels.
-if ! make olddefconfig ARCH=um SUBARCH=x86_64 CROSS_COMPILE= ; then
- cat >&2 << EOF
+ # Disable the kernel config options listed in $DISABLE_OPTIONS.
+ cmdline=${DISABLE_OPTIONS// / -d }
+ ./scripts/config $cmdline
+
+ # olddefconfig doesn't work on old kernels.
+ if ! make olddefconfig ARCH=um SUBARCH=x86_64 CROSS_COMPILE= ; then
+ cat >&2 << EOF
Warning: "make olddefconfig" failed.
Perhaps this kernel is too old to support it.
Keep enter pressed to accept the defaults.
EOF
+ fi
+
+ # Compile the kernel.
+ make -j32 linux ARCH=um SUBARCH=x86_64 CROSS_COMPILE=
+ KERNEL_BINARY=./linux
fi
-# Compile the kernel.
-make -j12 linux ARCH=um SUBARCH=x86_64 CROSS_COMPILE=
# Get the absolute path to the test file that's being run.
dir=/host$(dirname $(readlink -f $0))
# Start the VM.
-exec ./linux umid=net_test ubda=$(dirname $0)/$ROOTFS \
+exec $KERNEL_BINARY umid=net_test ubda=$(dirname $0)/$ROOTFS \
mem=512M init=/sbin/net_test.sh net_test=$dir/$test \
$netconfig
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