/usr/lib/ruby/vendor_ruby/childprocess.rb is in ruby-childprocess 0.5.9-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 | require 'childprocess/errors'
require 'childprocess/abstract_process'
require 'childprocess/abstract_io'
require "fcntl"
module ChildProcess
@posix_spawn = false
class << self
def new(*args)
case os
when :macosx, :linux, :solaris, :bsd, :cygwin, :aix
if posix_spawn?
Unix::PosixSpawnProcess.new(args)
elsif jruby?
JRuby::Process.new(args)
else
Unix::ForkExecProcess.new(args)
end
when :windows
Windows::Process.new(args)
else
raise Error, "unsupported platform #{platform_name.inspect}"
end
end
alias_method :build, :new
def platform
if RUBY_PLATFORM == "java"
:jruby
elsif defined?(RUBY_ENGINE) && RUBY_ENGINE == "ironruby"
:ironruby
else
os
end
end
def platform_name
@platform_name ||= "#{arch}-#{os}"
end
def unix?
!windows?
end
def linux?
os == :linux
end
def jruby?
platform == :jruby
end
def windows?
os == :windows
end
def posix_spawn?
enabled = @posix_spawn || %w[1 true].include?(ENV['CHILDPROCESS_POSIX_SPAWN'])
return false unless enabled
require 'ffi'
begin
require "childprocess/unix/platform/#{ChildProcess.platform_name}"
rescue LoadError
raise ChildProcess::MissingPlatformError
end
require "childprocess/unix/lib"
require 'childprocess/unix/posix_spawn_process'
true
rescue ChildProcess::MissingPlatformError => ex
warn_once ex.message
false
end
#
# Set this to true to enable experimental use of posix_spawn.
#
def posix_spawn=(bool)
@posix_spawn = bool
end
def os
@os ||= (
require "rbconfig"
host_os = RbConfig::CONFIG['host_os'].downcase
case host_os
when /linux/
:linux
when /darwin|mac os/
:macosx
when /mswin|msys|mingw32/
:windows
when /cygwin/
:cygwin
when /solaris|sunos/
:solaris
when /bsd/
:bsd
when /aix/
:aix
else
raise Error, "unknown os: #{host_os.inspect}"
end
)
end
def arch
@arch ||= (
host_cpu = RbConfig::CONFIG['host_cpu'].downcase
case host_cpu
when /i[3456]86/
# Darwin always reports i686, even when running in 64bit mod
if os == :macosx && 0xfee1deadbeef.is_a?(Fixnum)
"x86_64"
else
"i386"
end
when /amd64|x86_64/
"x86_64"
when /ppc|powerpc/
"powerpc"
else
host_cpu
end
)
end
#
# By default, a child process will inherit open file descriptors from the
# parent process. This helper provides a cross-platform way of making sure
# that doesn't happen for the given file/io.
#
def close_on_exec(file)
if file.respond_to?(:close_on_exec=)
file.close_on_exec = true
elsif file.respond_to?(:fcntl) && defined?(Fcntl::FD_CLOEXEC)
file.fcntl Fcntl::F_SETFD, Fcntl::FD_CLOEXEC
if jruby? && posix_spawn?
# on JRuby, the fcntl call above apparently isn't enough when
# we're launching the process through posix_spawn.
fileno = JRuby.posix_fileno_for(file)
Unix::Lib.fcntl fileno, Fcntl::F_SETFD, Fcntl::FD_CLOEXEC
end
elsif windows?
Windows::Lib.dont_inherit file
else
raise Error, "not sure how to set close-on-exec for #{file.inspect} on #{platform_name.inspect}"
end
end
private
def warn_once(msg)
@warnings ||= {}
unless @warnings[msg]
@warnings[msg] = true
$stderr.puts msg
end
end
end # class << self
end # ChildProcess
require 'jruby' if ChildProcess.jruby?
require 'childprocess/unix' if ChildProcess.unix?
require 'childprocess/windows' if ChildProcess.windows?
require 'childprocess/jruby' if ChildProcess.jruby?
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