Auto merge of #4408 - bundler:seg-enotsup, r=indirect

[SharedHelpers] Handle Errno::ENOTSUP in .filesystem_access

Closes #4394.

\c @RochesterinNYC

3 files changed, 19 insertions, 0 deletions

diff --git a/lib/bundler/errors.rb b/lib/bundler/errors.rb
index 7b893e664f..f6c9150121 100644
--- a/lib/bundler/errors.rb
+++ b/lib/bundler/errors.rb
@@ -107,4 +107,12 @@ module Bundler
 
     status_code(27)
   end
+
+  class OperationNotSupportedError < PermissionError
+    def message
+      "Attempting to #{action} `#{@path}` is unsupported by your OS."
+    end
+
+    status_code(28)
+  end
 end
diff --git a/lib/bundler/shared_helpers.rb b/lib/bundler/shared_helpers.rb
index c79c88c5e1..e21d616ecd 100644
--- a/lib/bundler/shared_helpers.rb
+++ b/lib/bundler/shared_helpers.rb
@@ -109,6 +109,8 @@ module Bundler
       raise TemporaryResourceError.new(path, action)
     rescue Errno::EPROTO
       raise VirtualProtocolError.new
+    rescue *[const_get_safely(:ENOTSUP, Errno)].compact
+      raise OperationNotSupportedError.new(path, action)
     end
 
     def const_get_safely(constant_name, namespace)
diff --git a/spec/bundler/shared_helpers_spec.rb b/spec/bundler/shared_helpers_spec.rb
index 348889a326..98f7994f9f 100644
--- a/spec/bundler/shared_helpers_spec.rb
+++ b/spec/bundler/shared_helpers_spec.rb
@@ -369,6 +369,15 @@ describe Bundler::SharedHelpers do
           Bundler::VirtualProtocolError)
       end
     end
+
+    context "system throws Errno::ENOTSUP", :ruby => "1.9" do
+      let(:file_op_block) { proc {|_path| raise Errno::ENOTSUP } }
+
+      it "raises a OperationNotSupportedError" do
+        expect { subject.filesystem_access("/path", &file_op_block) }.to raise_error(
+          Bundler::OperationNotSupportedError)
+      end
+    end
   end
 
   describe "#const_get_safely" do