crash-reporter: Generate kernel crash signatures for server-side grouping of similar crashes

crash_sender

 #!/bin/sh
 
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 set -e
 
 # Product ID in crash report
 CHROMEOS_PRODUCT=ChromeOS
@@ skipping 183 matching lines @@
   local meta_path="$1"
   local kind="$(get_kind "${meta_path}")"
   local exec_name="$(get_key_value "${meta_path}" "exec_name")"
   local sleep_time=$(generate_uniform_random $SECONDS_SEND_SPREAD)
   local url="${REPORT_UPLOAD_PROD_URL}"
   local chromeos_version="$(get_key_value "${meta_path}" "ver")"
   local board="$(get_board)"
   local hwclass="$(get_hardware_class)"
   local payload_extension="${kind}"
   local write_payload_size="$(get_key_value "${meta_path}" "payload_size")"
+  local sig="$(get_key_value "${meta_path}" "sig")"
   [ "${kind}" = "minidump" ] && payload_extension="dmp"
   local report_payload="$(get_base "${meta_path}").${payload_extension}"
   local send_payload_size="$(stat --printf=%s "${report_payload}")"
   lecho "Sending crash:"
   lecho "  Scheduled to send in ${sleep_time}s"
   lecho "  Metadata: ${meta_path} (${kind})"
   lecho "  Payload: ${report_payload}"
   lecho "  Version: ${chromeos_version}"
   if is_mock; then
     lecho "  Product: ${CHROMEOS_PRODUCT}"
     lecho "  URL: ${url}"
     lecho "  Board: ${board}"
     lecho "  HWClass: ${hwclass}"
+    [ "${sig}" != "undefined" ] && lecho "  Sig: ${sig}"
   fi
   lecho "  Exec name: ${exec_name}"
   if is_mock; then
     local mock_in=$(cat "${MOCK_CRASH_SENDING}")
     if [ "${mock_in}" = "" ]; then
       lecho "Mocking successful send"
       return 0
     else
       lecho "Mocking unsuccessful send"
       return 1
     fi
   fi
 
   if ! sleep ${sleep_time}; then
     lecho "Sleep failed"
     return 1
   fi
 
   local report_id="${TMP_DIR}/report_id"
   local curl_stderr="${TMP_DIR}/curl_stderr"
 
+  local extra_key1="write_payload_size"
+  local extra_value1="${write_payload_size}"
+  local extra_key2="send_payload_size"
+  local extra_value2="${send_payload_size}"
+  if [ "${kind}" = "kcrash" ]; then
+    extra_key1="sig"
+    extra_value1="${sig}"
+    extra_key2="sig2"
+    extra_value2="${sig}"
+  fi
+
   set +e
   curl "${url}" \
     -F "prod=${CHROMEOS_PRODUCT}" \
     -F "ver=${chromeos_version}" \
     -F "upload_file_${kind}=@${report_payload}" \
     -F "board=${board}" \
     -F "hwclass=${hwclass}" \
     -F "exec_name=${exec_name}" \
-    -F "write_payload_size=${write_payload_size}" \
-    -F "send_payload_size=${send_payload_size}" \
+    -F "${extra_key1}=${extra_value1}" \
+    -F "${extra_key2}=${extra_value2}" \
     -F "guid=<${CONSENT_ID}" -o "${report_id}" 2>"${curl_stderr}"
   curl_result=$?
   set -e
 
   if [ ${curl_result} -eq 0 ]; then
     lecho "Crash report receipt ID $(cat ${report_id})"
   else
     lecho "Crash sending failed with: $(cat ${curl_stderr})"
   fi
 
@@ skipping 115 matching lines @@
   TMP_DIR="$(mktemp -d /tmp/crash_sender.XXXX)"
 
   # Send system-wide crashes
   send_crashes "/var/spool/crash"
 
   # Send user-specific crashes
   send_crashes "/home/chronos/user/crash"
 }
 
 main