1 #!/bin/bash 2 3 # Kernel configuration options. 4 OPTIONS=" DEBUG_SPINLOCK DEBUG_ATOMIC_SLEEP DEBUG_MUTEXES DEBUG_RT_MUTEXES" 5 OPTIONS="$OPTIONS IPV6 IPV6_ROUTER_PREF IPV6_MULTIPLE_TABLES IPV6_ROUTE_INFO" 6 OPTIONS="$OPTIONS TUN SYN_COOKIES IP_ADVANCED_ROUTER IP_MULTIPLE_TABLES" 7 OPTIONS="$OPTIONS NETFILTER NETFILTER_ADVANCED NETFILTER_XTABLES" 8 OPTIONS="$OPTIONS NETFILTER_XT_MARK NETFILTER_XT_TARGET_MARK" 9 OPTIONS="$OPTIONS IP_NF_IPTABLES IP_NF_MANGLE IP_NF_FILTER" 10 OPTIONS="$OPTIONS IP6_NF_IPTABLES IP6_NF_MANGLE IP6_NF_FILTER INET6_IPCOMP" 11 OPTIONS="$OPTIONS IPV6_PRIVACY IPV6_OPTIMISTIC_DAD" 12 OPTIONS="$OPTIONS CONFIG_IPV6_ROUTE_INFO CONFIG_IPV6_ROUTER_PREF" 13 OPTIONS="$OPTIONS CONFIG_NETFILTER_XT_TARGET_NFLOG" 14 OPTIONS="$OPTIONS CONFIG_NETFILTER_XT_MATCH_QUOTA" 15 OPTIONS="$OPTIONS CONFIG_NETFILTER_XT_MATCH_QUOTA2" 16 OPTIONS="$OPTIONS CONFIG_NETFILTER_XT_MATCH_QUOTA2_LOG" 17 OPTIONS="$OPTIONS CONFIG_INET_UDP_DIAG CONFIG_INET_DIAG_DESTROY" 18 OPTIONS="$OPTIONS IP_SCTP INET_SCTP_DIAG" 19 OPTIONS="$OPTIONS CONFIG_IP_NF_TARGET_REJECT CONFIG_IP_NF_TARGET_REJECT_SKERR" 20 OPTIONS="$OPTIONS CONFIG_IP6_NF_TARGET_REJECT CONFIG_IP6_NF_TARGET_REJECT_SKERR" 21 OPTIONS="$OPTIONS BPF_SYSCALL XFRM_USER CRYPTO_CBC CRYPTO_CTR" 22 OPTIONS="$OPTIONS CRYPTO_HMAC CRYPTO_AES CRYPTO_SHA1 CRYPTO_SHA256 CRYPTO_SHA12" 23 OPTIONS="$OPTIONS CRYPTO_USER INET_AH INET_ESP INET_XFRM_MODE" 24 OPTIONS="$OPTIONS TRANSPORT INET_XFRM_MODE_TUNNEL INET6_AH INET6_ESP" 25 OPTIONS="$OPTIONS INET6_XFRM_MODE_TRANSPORT INET6_XFRM_MODE_TUNNEL" 26 OPTIONS="$OPTIONS CRYPTO_SHA256 CRYPTO_SHA512 CRYPTO_AES_X86_64" 27 OPTIONS="$OPTIONS CRYPTO_ECHAINIV" 28 29 # For 3.1 kernels, where devtmpfs is not on by default. 30 OPTIONS="$OPTIONS DEVTMPFS DEVTMPFS_MOUNT" 31 32 # These two break the flo kernel due to differences in -Werror on recent GCC. 33 DISABLE_OPTIONS=" CONFIG_REISERFS_FS CONFIG_ANDROID_PMEM" 34 # This one breaks the fugu kernel due to a nonexistent sem_wait_array. 35 DISABLE_OPTIONS="$DISABLE_OPTIONS CONFIG_SYSVIPC" 36 37 # How many TAP interfaces to create to provide the VM with real network access 38 # via the host. This requires privileges (e.g., root access) on the host. 39 # 40 # This is not needed to run the tests, but can be used, for example, to allow 41 # the VM to update system packages, or to write tests that need access to a 42 # real network. The VM does not set up networking by default, but it contains a 43 # DHCP client and has the ability to use IPv6 autoconfiguration. This script 44 # does not perform any host-level setup beyond configuring tap interfaces; 45 # configuring IPv4 NAT and/or IPv6 router advertisements or ND proxying must 46 # be done separately. 47 NUMTAPINTERFACES=0 48 49 # The root filesystem disk image we'll use. 50 ROOTFS=net_test.rootfs.20150203 51 COMPRESSED_ROOTFS=$ROOTFS.xz 52 URL=https://dl.google.com/dl/android/$COMPRESSED_ROOTFS 53 54 # Parse arguments and figure out which test to run. 55 J=${J:-64} 56 MAKE="make" 57 OUT_DIR=$(readlink -f ${OUT_DIR:-.}) 58 KERNEL_DIR=$(readlink -f ${KERNEL_DIR:-.}) 59 if [ "$OUT_DIR" != "$KERNEL_DIR" ]; then 60 MAKE="$MAKE O=$OUT_DIR" 61 fi 62 SCRIPT_DIR=$(dirname $(readlink -f $0)) 63 CONFIG_SCRIPT=${KERNEL_DIR}/scripts/config 64 CONFIG_FILE=${OUT_DIR}/.config 65 consolemode= 66 testmode= 67 blockdevice=ubda 68 nobuild=0 69 norun=0 70 71 while [ -n "$1" ]; do 72 if [ "$1" = "--builder" ]; then 73 consolemode="con=null,fd:1" 74 testmode=builder 75 shift 76 elif [ "$1" == "--readonly" ]; then 77 blockdevice="${blockdevice}r" 78 shift 79 elif [ "$1" == "--nobuild" ]; then 80 nobuild=1 81 shift 82 elif [ "$1" == "--norun" ]; then 83 norun=1 84 shift 85 else 86 test=$1 87 break # Arguments after the test file are passed to the test itself. 88 fi 89 done 90 91 # Check that test file exists and is readable 92 test_file=$SCRIPT_DIR/$test 93 if [[ ! -e $test_file ]]; then 94 echo "test file '${test_file}' does not exist" 95 exit 1 96 fi 97 98 if [[ ! -x $test_file ]]; then 99 echo "test file '${test_file}' is not executable" 100 exit 1 101 fi 102 103 # Collect trailing arguments to pass to $test 104 test_args=${@:2} 105 106 function isRunningTest() { 107 [[ -n "$test" ]] && ! (( norun )) 108 } 109 110 function isBuildOnly() { 111 [[ -z "$test" ]] && (( norun )) && ! (( nobuild )) 112 } 113 114 if ! isRunningTest && ! isBuildOnly; then 115 echo "Usage:" >&2 116 echo " $0 [--builder] [--readonly] [--nobuild] <test>" >&2 117 echo " $0 --norun" >&2 118 exit 1 119 fi 120 121 cd $OUT_DIR 122 echo Running tests from: `pwd` 123 124 set -e 125 126 # Check if we need to uncompress the disk image. 127 # We use xz because it compresses better: to 42M vs 72M (gzip) / 62M (bzip2). 128 cd $SCRIPT_DIR 129 if [ ! -f $ROOTFS ]; then 130 echo "Deleting $COMPRESSED_ROOTFS" >&2 131 rm -f $COMPRESSED_ROOTFS 132 echo "Downloading $URL" >&2 133 wget -nv $URL 134 echo "Uncompressing $COMPRESSED_ROOTFS" >&2 135 unxz $COMPRESSED_ROOTFS 136 fi 137 echo "Using $ROOTFS" 138 cd - 139 140 # If network access was requested, create NUMTAPINTERFACES tap interfaces on 141 # the host, and prepare UML command line params to use them. The interfaces are 142 # called <user>TAP0, <user>TAP1, on the host, and eth0, eth1, ..., in the VM. 143 if (( $NUMTAPINTERFACES > 0 )); then 144 user=${USER:0:10} 145 tapinterfaces= 146 netconfig= 147 for id in $(seq 0 $(( NUMTAPINTERFACES - 1 )) ); do 148 tap=${user}TAP$id 149 tapinterfaces="$tapinterfaces $tap" 150 mac=$(printf fe:fd:00:00:00:%02x $id) 151 netconfig="$netconfig eth$id=tuntap,$tap,$mac" 152 done 153 154 for tap in $tapinterfaces; do 155 if ! ip link list $tap > /dev/null; then 156 echo "Creating tap interface $tap" >&2 157 sudo tunctl -u $USER -t $tap 158 sudo ip link set $tap up 159 fi 160 done 161 fi 162 163 if [ -n "$KERNEL_BINARY" ]; then 164 nobuild=1 165 else 166 KERNEL_BINARY=./linux 167 fi 168 169 if ((nobuild == 0)); then 170 # Exporting ARCH=um SUBARCH=x86_64 doesn't seem to work, as it "sometimes" 171 # (?) results in a 32-bit kernel. 172 173 # If there's no kernel config at all, create one or UML won't work. 174 [ -f $CONFIG_FILE ] || (cd $KERNEL_DIR && $MAKE defconfig ARCH=um SUBARCH=x86_64) 175 176 # Enable the kernel config options listed in $OPTIONS. 177 cmdline=${OPTIONS// / -e } 178 $CONFIG_SCRIPT --file $CONFIG_FILE $cmdline 179 180 # Disable the kernel config options listed in $DISABLE_OPTIONS. 181 cmdline=${DISABLE_OPTIONS// / -d } 182 $CONFIG_SCRIPT --file $CONFIG_FILE $cmdline 183 184 # olddefconfig doesn't work on old kernels. 185 if ! $MAKE olddefconfig ARCH=um SUBARCH=x86_64 CROSS_COMPILE= ; then 186 cat >&2 << EOF 187 188 Warning: "make olddefconfig" failed. 189 Perhaps this kernel is too old to support it. 190 You may get asked lots of questions. 191 Keep enter pressed to accept the defaults. 192 193 EOF 194 fi 195 196 # Compile the kernel. 197 $MAKE -j$J linux ARCH=um SUBARCH=x86_64 CROSS_COMPILE= 198 fi 199 200 if (( norun == 1 )); then 201 exit 0 202 fi 203 204 # Get the absolute path to the test file that's being run. 205 dir=/host$SCRIPT_DIR 206 207 # Start the VM. 208 exec $KERNEL_BINARY umid=net_test $blockdevice=$SCRIPT_DIR/$ROOTFS \ 209 mem=512M init=/sbin/net_test.sh net_test=$dir/$test \ 210 net_test_args=\"$test_args\" \ 211 net_test_mode=$testmode $netconfig $consolemode >&2 212
