undo free bsd error handling

Author: n3phos

lib/zip/zip.rb

@@ -1286,9 +1286,23 @@ def get_e_o_c_d(io)  #:nodoc:
 	io.seek(-MAX_END_OF_CENTRAL_DIRECTORY_STRUCTURE_SIZE, IO::SEEK_END)
       rescue Errno::EINVAL
 	io.seek(0, IO::SEEK_SET)
+      rescue Errno::EFBIG # FreeBSD 4.9 raise Errno::EFBIG instead of Errno::EINVAL
+	io.seek(0, IO::SEEK_SET)
+      end
+      
+      # 'buf = io.read' substituted with lump of code to work around FreeBSD 4.5 issue
+      retried = false
+      buf = nil
+      begin
+        buf = io.read
+      rescue Errno::EFBIG # FreeBSD 4.5 may raise Errno::EFBIG
+        raise if (retried)
+        retried = true
+	
+        io.seek(0, IO::SEEK_SET)
+        retry
       end
 
-			buf = io.read
       sigIndex = buf.rindex([END_OF_CENTRAL_DIRECTORY_SIGNATURE].pack('V'))
       raise ZipError, "Zip end of central directory signature not found" unless sigIndex
       buf=buf.slice!((sigIndex+4)..(buf.size))