sysdeps/nacl/nacl-test-wrapper.sh

   1 #!/bin/bash
   2 # test-wrapper script for NaCl.
   3
   4 # Copyright (C) 2015 Free Software Foundation, Inc.
   5 # This file is part of the GNU C Library.
   6
   7 # The GNU C Library is free software; you can redistribute it and/or
   8 # modify it under the terms of the GNU Lesser General Public
   9 # License as published by the Free Software Foundation; either
  10 # version 2.1 of the License, or (at your option) any later version.
  11
  12 # The GNU C Library is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 # Lesser General Public License for more details.
  16
  17 # You should have received a copy of the GNU Lesser General Public
  18 # License along with the GNU C Library; if not, see
  19 # <http://www.gnu.org/licenses/>.
  20
  21 progname="$(basename "$0")"
  22
  23 usage="usage: ${progname} --arch=ARCH [VAR=VAL...] COMMAND ..."
  24 help="
  25 "
  26
  27 use_bootstrap=true
  28 arch=
  29 env=()
  30 envi=0
  31 while [ $# -gt 0 ]; do
  32   case "$1" in
  33
  34     --help)
  35       echo "$usage"
  36       echo "$help"
  37       exit 0
  38       ;;
  39
  40     --arch=*)
  41       arch="${1#--arch=}"
  42       shift
  43       ;;
  44
  45     *=*)
  46       env[envi++]='-E'
  47       env[envi++]="$1"
  48       shift
  49       ;;
  50
  51     --)
  52       shift
  53       break
  54       ;;
  55
  56     *)
  57       break
  58       ;;
  59   esac
  60 done
  61
  62 if [ $# -lt 1 -o -z "$arch" ]; then
  63   echo "$usage" >&2
  64   echo "Type '${progname} --help' for more detailed help." >&2
  65   exit 1
  66 fi
  67
  68 test_args=("$@")
  69
  70 if [ -z "$NACL_SDK_ROOT" ]; then
  71   echo >&2 "$0: NACL_SDK_ROOT must be set in the environment"
  72   exit 77
  73 fi
  74
  75 # We use a handful of things from the NaCl SDK, or at least
  76 # from a directory matching the layout of the NaCl SDK.
  77 sdk_tools="${NACL_SDK_ROOT}/tools"
  78
  79 NACL_BOOTSTRAP="${sdk_tools}/nacl_helper_bootstrap_${arch}"
  80 NACL_SEL_LDR="${sdk_tools}/sel_ldr_${arch}"
  81 NACL_IRT="${sdk_tools}/irt_core_${arch}.nexe"
  82 NACL_LOADER="${sdk_tools}/elf_loader_${arch}.nexe"
  83
  84 if [ ! -x "$NACL_BOOTSTRAP" -o ! -x "$NACL_SEL_LDR" ]; then
  85   echo >&2 "$0: sel_ldr_${arch} and/or nacl_helper_bootstrap_${arch} missing"
  86   echo >&2 "$0: from directory $sdk_tools"
  87   exit 77
  88 fi
  89
  90 if [ ! -r "$NACL_IRT" -o ! -r "$NACL_LOADER" ]; then
  91   echo >&2 "$0: irt_core_${arch}.nexe and/or loader_${arch}.nexe missing"
  92   echo >&2 "$0: from directory $sdk_tools"
  93   exit 77
  94 fi
  95
  96 # Figure out if we are building for the native machine or not.
  97 # If not, we'll run sel_ldr under qemu.
  98 decide_use_emulator()
  99 {
 100   local arg
 101   for arg; do
 102     if [[ "$(uname -m)" = "$1" ]]; then
 103       return
 104     fi
 105   done
 106   use_emulator=true
 107 }
 108
 109 use_emulator=false
 110 case "$arch" in
 111 arm)
 112   decide_use_emulator 'arm*'
 113   emulator=(qemu-arm -cpu cortex-a15 -L "${sdk_tools}/arm_trusted")
 114   ;;
 115 x86_32)
 116   decide_use_emulator 'i?86' 'x86_64*'
 117   emulator=(qemu-i386)
 118   ;;
 119 x86_64)
 120   decide_use_emulator 'x86_64*'
 121   emulator=(qemu-x86_64)
 122   ;;
 123 esac
 124
 125 if $use_emulator; then
 126   ldr_args=('-Q')
 127   emulator_factor=10
 128 else
 129   emulator=()
 130   ldr_args=()
 131   emulator_factor=1
 132 fi
 133
 134 if $use_bootstrap; then
 135   ldr=(
 136     "${NACL_BOOTSTRAP}"
 137     "${NACL_SEL_LDR}"
 138     '--r_debug=0xXXXXXXXXXXXXXXXX'
 139     '--reserved_at_zero=0xXXXXXXXXXXXXXXXX'
 140   )
 141 else
 142   ldr=("${NACL_SEL_LDR}")
 143 fi
 144
 145 static=true
 146 case "$1" in
 147 */ld-nacl*) static=false ;;
 148 esac
 149
 150 if $static; then
 151   loader=()
 152 else
 153   loader=(-f "${NACL_LOADER}")
 154 fi
 155
 156 run_test()
 157 {
 158   local test_fifo="$1"
 159   local cmd=(
 160     "${emulator[@]}" "${ldr[@]}" -q -S -a "${ldr_args[@]}" -B "${NACL_IRT}"
 161     "${loader[@]}" "${env[@]}" -E TEST_DIRECT="$test_fifo" -- "${test_args[@]}"
 162   )
 163   if [ "${NACLVERBOSITY:+set}" = set ]; then
 164     "${cmd[@]}"
 165   else
 166     NACLLOG=/dev/null "${cmd[@]}"
 167   fi
 168 }
 169
 170 temp_files=()
 171 test_fifo=
 172 do_cleanup()
 173 {
 174   rm -rf "$test_fifo" "${temp_files[@]}"
 175 }
 176 trap do_cleanup EXIT HUP INT TERM
 177
 178 # Create a named pipe to receive the TEST_DIRECT information from the test
 179 # program.
 180 test_fifo=${TMPDIR:-/tmp}/libc-test-fifo.$$
 181 rm -f "$test_fifo"
 182 mkfifo "$test_fifo" || {
 183   echo "Cannot create test FIFO '$test_fifo'"
 184   exit 1
 185 }
 186
 187 # Run the test in the background, so we can implement a timeout.
 188 # The no-op redirection defeats the default behavior of "< /dev/null"
 189 # for a background command.
 190 run_test "$test_fifo" <&0 & test_pid=$!
 191
 192 # Set up a short timeout before we read from the FIFO, in case
 193 # the program doesn't actually write to the FIFO at all (it is
 194 # not a test-skeleton.c program, or it dies very early).
 195 no_skeleton=false
 196 script_pid=$$
 197 trap 'no_skeleton=true' USR1
 198 (sleep 2; kill -USR1 $script_pid) 2> /dev/null &
 199
 200 # The test should first write into the FIFO to describe its expectations.
 201 # Our open-for-reading of the FIFO will block until the test starts up and
 202 # opens it for writing.  Then our reads will block until the test finishes
 203 # writing out info and closes the FIFO.  At that point we will have
 204 # collected (and evaluated) what it emitted.  It sets these variables:
 205 #       timeout=%u
 206 #       timeoutfactor=%u
 207 #       exit=%u
 208 #       signal=%s
 209 unset exit signal
 210 . "$test_fifo" 2> /dev/null
 211
 212 # If we got this far, either the 'no_skeleton=true' watchdog already
 213 # fired, or else we don't want it to.
 214 trap '' USR1
 215
 216 if $no_skeleton; then
 217   # We hit the timeout, so we didn't get full information about test
 218   # expectations.  Reset any partial results we may have gotten.
 219   unset exit signal
 220 else
 221   # Now we know the expected timeout, so we can start the timer running.
 222   ((sleep_time = timeout * timeoutfactor * emulator_factor))
 223
 224   # Now start a background subshell to enforce the timeout.
 225   (sleep "$sleep_time"; kill -ALRM $test_pid) 2> /dev/null &
 226 fi
 227
 228 # This corresponds to '#ifdef EXPECTED_STATUS' in test-skeleton.c.
 229 expected_status()
 230 {
 231   test "${exit+yes}" = yes
 232 }
 233 # This corresponds to '#ifdef EXPECTED_SIGNAL' in test-skeleton.c.
 234 expected_signal()
 235 {
 236   test "${signal+yes}" = yes
 237 }
 238 # This corresponds to 'if (WIFEXITED (status))' in test-skeleton.c.
 239 wifexited()
 240 {
 241   test $test_rc -lt 128
 242 }
 243
 244 # Now wait for the test process to finish.
 245 wait $test_pid
 246 test_rc=$?
 247
 248 # This exactly duplicates the logic in test-skeleton.c.
 249 if wifexited; then
 250   if ! expected_status; then
 251     if ! expected_signal; then
 252       # Simply exit with the return value of the test.  */
 253       exit $test_rc
 254     else
 255       echo "Expected signal '${signal}' from child, got none"
 256       exit 1
 257     fi
 258   else
 259     if [ $test_rc -ne $exit ]; then
 260       echo "Expected status $exit, got $test_rc"
 261       exit 1
 262     fi
 263     exit 0
 264   fi
 265 else
 266   # Process was killed by timer or other signal.
 267   ((test_signal = test_rc > 192 ? 256 - test_rc : test_rc - 128 ))
 268   test_signame=$(kill -l "$test_signal")
 269   if ! expected_signal; then
 270     echo "Didn't expect signal from child; got '${test_signame}'"
 271     exit 1
 272   else
 273     if [ "$test_signame" != "$signal" ]; then
 274       echo "\
 275 Incorrect signal from child: got '${test_signame}', need '${signal}'"
 276       exit 1
 277     fi
 278     exit 0
 279   fi
 280 fi