Expose label for processes only on linux

lib/resources/processes.rb

@@ -45,30 +45,61 @@ module Inspec::Resources
     private
 
     def ps_aux
-      # get all running processes
-      cmd = inspec.command('ps aux')
+      os = inspec.os
+
+      if os.linux?
+        command = 'ps auxZ'
+        regex = /^([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+(.*)$/
+      else
+        command = 'ps aux'
+        regex = /^([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+(.*)$/
+      end
+      build_process_list(command, regex, os)
+    end
+
+    def build_process_list(command, regex, os) # rubocop:disable MethodLength, Metrics/AbcSize
+      cmd = inspec.command(command)
       all = cmd.stdout.split("\n")[1..-1]
       return [] if all.nil?
 
       lines = all.map do |line|
-        # user   32296  0.0  0.0  42592  7972 pts/15   Ss+  Apr06   0:00 zsh
-        line.match(/^([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+([^ ]+)\s+(.*)$/)
+        line.match(regex)
       end.compact
 
-      lines.map do |m|
-        {
-          user: m[1],
-          pid: m[2].to_i,
-          cpu: m[3],
-          mem: m[4],
-          vsz: m[5].to_i,
-          rss: m[6].to_i,
-          tty: m[7],
-          stat: m[8],
-          start: m[9],
-          time: m[10],
-          command: m[11],
-        }
+      if os.linux?
+        lines.map do |m|
+          {
+            label: m[1],
+            user: m[2],
+            pid: m[3].to_i,
+            cpu: m[4],
+            mem: m[5],
+            vsz: m[6].to_i,
+            rss: m[7].to_i,
+            tty: m[8],
+            stat: m[9],
+            start: m[10],
+            time: m[11],
+            command: m[12],
+          }
+        end
+      else
+        lines.map do |m|
+          {
+            label: nil,
+            user: m[1],
+            pid: m[2].to_i,
+            cpu: m[3],
+            mem: m[4],
+            vsz: m[5].to_i,
+            rss: m[6].to_i,
+            tty: m[7],
+            stat: m[8],
+            start: m[9],
+            time: m[10],
+            command: m[11],
+          }
+        end
       end
     end
   end

test/helper.rb

@@ -137,6 +137,7 @@ class MockLoader
 
     mock.commands = {
       'ps aux' => cmd.call('ps-aux'),
+      'ps auxZ' => cmd.call('ps-auxZ'),
       'Get-Content win_secpol.cfg' => cmd.call('secedit-export'),
       'secedit /export /cfg win_secpol.cfg' => cmd.call('success'),
       'Remove-Item win_secpol.cfg' => cmd.call('success'),

test/unit/mock/cmd/ps-auxZ

@@ -0,0 +1,3 @@
+LABEL                            USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
+system_u:system_r:kernel_t:s0    root         1  0.0  0.0  19232  1492 ?        Ss   May04   0:01 /sbin/init
+system_u:system_r:kernel_t:s0    root        39  0.0  0.0      0     0 ?        S    May04   0:00 crypto/0

test/unit/resources/processes_test.rb

@@ -12,8 +12,9 @@ describe 'Inspec::Resources::Processes' do
   end
 
   it 'verify processes resource' do
-    resource = load_resource('processes', '/bin/bash')
+    resource = MockLoader.new(:freebsd10).load_resource('processes', '/bin/bash')
     _(resource.list).must_equal [{
+      label: nil,
       user: 'root',
       pid: 1,
       cpu: '0.0',
@@ -30,9 +31,35 @@ describe 'Inspec::Resources::Processes' do
     _(resource.list.length).must_equal 1
   end
 
+  it 'verify processes resource on linux os' do
+    resource = MockLoader.new(:centos6).load_resource('processes', '/sbin/init')
+    _(resource.list).must_equal [{
+      label: 'system_u:system_r:kernel_t:s0',
+      user: 'root',
+      pid: 1,
+      cpu: '0.0',
+      mem: '0.0',
+      vsz: 19232,
+      rss: 1492,
+      tty: '?',
+      stat: 'Ss',
+      start: 'May04',
+      time: '0:01',
+      command: '/sbin/init',
+    }]
+
+    _(resource.list.length).must_equal 1
+  end
+
   it 'retrieves the users and states as arrays' do
-    resource = load_resource('processes', 'svc')
+    resource = MockLoader.new(:freebsd10).load_resource('processes', 'svc')
     _(resource.users.sort).must_equal ['noot']
     _(resource.states.sort).must_equal ['S', 'Ss']
   end
+
+  it 'retrieves the users and states as arrays on linux os' do
+    resource = MockLoader.new(:centos6).load_resource('processes', 'crypto/0')
+    _(resource.users.sort).must_equal ['root']
+    _(resource.states.sort).must_equal ['S']
+  end
 end