Current File : //opt/cpanel/ea-ruby27/root/usr/share/passenger/phusion_passenger/vendor/crash_watch/app.rb
# encoding: binary
#
# Copyright (c) 2010-2017 Phusion Holding B.V.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
require 'optparse'
PhusionPassenger.require_passenger_lib 'vendor/crash_watch/gdb_controller'
PhusionPassenger.require_passenger_lib 'vendor/crash_watch/lldb_controller'
PhusionPassenger.require_passenger_lib 'vendor/crash_watch/version'
module CrashWatch
class App
def run(argv)
options = {}
parser = OptionParser.new do |opts|
opts.banner = "Usage: crash-watch [options] PID"
opts.separator ""
opts.separator "Options:"
opts.on("-d", "--debug", "Show GDB commands that crash-watch sends.") do
options[:debug] = true
end
opts.on("--dump", "Dump current process backtrace and exit immediately.") do
options[:dump] = true
end
opts.on("-v", "--version", "Show version number.") do
options[:version] = true
end
opts.on("-h", "--help", "Show this help message.") do
options[:help] = true
end
end
begin
parser.parse!(argv)
rescue OptionParser::ParseError => e
puts e
puts
puts "Please see '--help' for valid options."
exit 1
end
if options[:help]
puts parser
exit
elsif options[:version]
puts "crash-watch version #{CrashWatch::VERSION_STRING}"
exit
elsif argv.size != 1
puts parser
exit 1
end
begin
if !CrashWatch::Utils.gdb_installed? && CrashWatch::Utils.lldb_installed?
gdb = CrashWatch::LldbController.new
else
gdb = CrashWatch::GdbController.new
end
rescue CrashWatch::Error => e
abort e.message
end
begin
gdb.debug = options[:debug]
# Ruby sometimes uses SIGVTARLM for thread scheduling.
gdb.handle_signal("SIGVTALRM")
if gdb.attach(argv[0])
if options[:dump]
puts "*******************************************************"
puts "*"
puts "* Current thread (#{gdb.current_thread}) backtrace"
puts "*"
puts "*******************************************************"
puts
puts " " << gdb.current_thread_backtrace.gsub(/\n/, "\n ")
puts
puts
puts "*******************************************************"
puts "*"
puts "* All thread backtraces"
puts "*"
puts "*******************************************************"
puts
output = gdb.all_threads_backtraces
output.gsub!(/\n/, "\n ")
output.insert(0, " ")
output.gsub!(/^ (Thread .*):$/, "########### \\1 ###########\n")
puts output
else
if gdb.respond_to?(:wait_until_exit)
puts "Monitoring PID #{argv[0]}..."
exit_info = gdb.wait_until_exit
puts "Process exited at #{Time.now}."
puts "Exit code: #{exit_info.exit_code}" if exit_info.exit_code
puts "Signal: #{exit_info.signal}" if exit_info.signaled?
if exit_info.backtrace
puts "Backtrace:"
puts " " << exit_info.backtrace.gsub(/\n/, "\n ")
end
else
abort "ERROR: monitoring not supported with LLDB"
end
end
else
puts "ERROR: Cannot attach to process."
if File.exist?("/proc/sys/kernel/yama/ptrace_scope")
puts
puts "This may be the result of kernel ptrace() hardening. Try disabling it with:"
puts " sudo sh -c 'echo 0 > /proc/sys/kernel/yama/ptrace_scope'"
puts "See http://askubuntu.com/questions/41629/after-upgrade-gdb-wont-attach-to-process for more information."
end
exit 2
end
ensure
gdb.close
end
end
end
end
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