Give a unique, prefixed name to all tempfiles

This commit basically grepped the code base for all uses of Dir.mktmpdir
and Tempfile.new/open and ensures the value is unique within the
code base and also prefixed with `vagrant-`.

Previously, most invocations of these commands simply used "vagrant",
thus making them indistinguishable when trying to identify leaks.

lib/vagrant/bundler.rb

@@ -56,7 +56,7 @@ module Vagrant
 
       # Setup the "local" Bundler configuration. We need to set BUNDLE_PATH
       # because the existence of this actually suppresses `sudo`.
-      @appconfigpath = Dir.mktmpdir
+      @appconfigpath = Dir.mktmpdir("vagrant-bundle-app-config")
       File.open(File.join(@appconfigpath, "config"), "w+") do |f|
         f.write("BUNDLE_PATH: \"#{bundle_path}\"")
       end
@@ -254,14 +254,13 @@ module Vagrant
     def with_isolated_gem
       raise Errors::BundlerDisabled if !@enabled
 
-      tmp_gemfile = tempfile("vagrant-gemfile")
-      tmp_gemfile.close
+      tmp_gemfile = Dir::Tmpname.create("vagrant-gemfile") {}
 
       # Remove bundler settings so that Bundler isn't loaded when building
       # native extensions because it causes all sorts of problems.
       old_rubyopt = ENV["RUBYOPT"]
       old_gemfile = ENV["BUNDLE_GEMFILE"]
-      ENV["BUNDLE_GEMFILE"] = tmp_gemfile.path
+      ENV["BUNDLE_GEMFILE"] = tmp_gemfile
       ENV["RUBYOPT"] = (ENV["RUBYOPT"] || "").gsub(/-rbundler\/setup\s*/, "")
 
       # Set the GEM_HOME so gems are installed only to our local gem dir
@@ -291,7 +290,7 @@ module Vagrant
         return yield
       end
     ensure
-      tmp_gemfile.unlink rescue nil
+      File.unlink(tmp_gemfile) if File.file?(tmp_gemfile)
 
       ENV["BUNDLE_GEMFILE"] = old_gemfile
       ENV["GEM_HOME"] = @gem_home

lib/vagrant/util/platform.rb

@@ -125,7 +125,7 @@ module Vagrant
         # directory runs a different filesystem than the root directory.
         # However, this works in many cases.
         def fs_case_sensitive?
-          Dir.mktmpdir("vagrant") do |tmp_dir|
+          Dir.mktmpdir("vagrant-fs-case-sensitive") do |tmp_dir|
             tmp_file = File.join(tmp_dir, "FILE")
             File.open(tmp_file, "w") do |f|
               f.write("foo")

plugins/hosts/darwin/cap/provider_install_virtualbox.rb

@@ -16,8 +16,7 @@ module VagrantPlugins
         SHA256SUM = "62f933115498e51ddf5f2dab47dc1eebb42eb78ea1a7665cb91c53edacc847c6".freeze
 
         def self.provider_install_virtualbox(env)
-          tf = Tempfile.new("vagrant")
-          tf.close
+          path = Dir::Tmpname.create("vagrant-provider-install-virtualbox") {}
 
           # Prefixed UI for prettiness
           ui = Vagrant::UI::Prefixed.new(env.ui, "")
@@ -28,11 +27,11 @@ module VagrantPlugins
             version: VERSION))
           ui.detail(I18n.t(
             "vagrant.hosts.darwin.virtualbox_install_detail"))
-          dl = Vagrant::Util::Downloader.new(URL, tf.path, ui: ui)
+          dl = Vagrant::Util::Downloader.new(URL, path, ui: ui)
           dl.download!
 
           # Validate that the file checksum matches
-          actual = FileChecksum.new(tf.path, Digest::SHA2).checksum
+          actual = FileChecksum.new(path, Digest::SHA2).checksum
           if actual != SHA256SUM
             raise Vagrant::Errors::ProviderChecksumMismatch,
               provider: "virtualbox",
@@ -46,7 +45,7 @@ module VagrantPlugins
           ui.detail(I18n.t(
             "vagrant.hosts.darwin.virtualbox_install_install_detail"))
           script = File.expand_path("../../scripts/install_virtualbox.sh", __FILE__)
-          result = Vagrant::Util::Subprocess.execute("bash", script, tf.path)
+          result = Vagrant::Util::Subprocess.execute("bash", script, path)
           if result.exit_code != 0
             raise Vagrant::Errors::ProviderInstallFailed,
               provider: "virtualbox",

plugins/hosts/windows/cap/provider_install_virtualbox.rb

@@ -17,8 +17,7 @@ module VagrantPlugins
         SHA256SUM = "3e5ed8fe4ada6eef8dfb4fe6fd79fcab4b242acf799f7d3ab4a17b43838b1e04".freeze
 
         def self.provider_install_virtualbox(env)
-          tf = Tempfile.new("vagrant")
-          tf.close
+          path = Dir::Tmpname.create("vagrant-provider-install-virtualbox") {}
 
           # Prefixed UI for prettiness
           ui = Vagrant::UI::Prefixed.new(env.ui, "")
@@ -29,11 +28,11 @@ module VagrantPlugins
             version: VERSION))
           ui.detail(I18n.t(
             "vagrant.hosts.windows.virtualbox_install_detail"))
-          dl = Vagrant::Util::Downloader.new(URL, tf.path, ui: ui)
+          dl = Vagrant::Util::Downloader.new(URL, path, ui: ui)
           dl.download!
 
           # Validate that the file checksum matches
-          actual = FileChecksum.new(tf.path, Digest::SHA2).checksum
+          actual = FileChecksum.new(path, Digest::SHA2).checksum
           if actual != SHA256SUM
             raise Vagrant::Errors::ProviderChecksumMismatch,
               provider: "virtualbox",
@@ -47,7 +46,7 @@ module VagrantPlugins
           ui.detail(I18n.t(
             "vagrant.hosts.windows.virtualbox_install_install_detail"))
           script = File.expand_path("../../scripts/install_virtualbox.ps1", __FILE__)
-          result = Vagrant::Util::PowerShell.execute(script, tf.path)
+          result = Vagrant::Util::PowerShell.execute(script, path)
           if result.exit_code != 0
             raise Vagrant::Errors::ProviderInstallFailed,
               provider: "virtualbox",

plugins/providers/virtualbox/action/package_setup_folders.rb

@@ -14,7 +14,7 @@ module VagrantPlugins
 
         def call(env)
           env["package.output"] ||= "package.box"
-          env["package.directory"] ||= Dir.mktmpdir("package-", env[:tmp_path])
+          env["package.directory"] ||= Dir.mktmpdir("vagrant-package-", env[:tmp_path])
 
           # Match up a couple environmental variables so that the other parts of
           # Vagrant will do the right thing.