From: Tanaka Akira <akr@...>
Date: 2012-07-10T11:21:32+09:00
Subject: [ruby-core:46291] Re: [ruby-trunk - Bug #6715][Open] Dir.mktmpdir fails if you delete it yourself

2012/7/10 mitchellh (Mitchell Hashimoto) <mitchell.hashimoto@gmail.com>:

> Dir.mktmpdir when given a block will call `FileUtil.remove_entry_secure` in the ensure section. If the contents of the block happens to move/delete/modify that folder, then that will fail with Errno::ENOENT. I believe the correct behavior in this case should be to successfully return, since the folder is clearly gone in some way.

I think such application may remove another application's temporary
directory unintentionally.

After you remove the directory, another application may create a
directory with same name.
Then Dir.mktmpdir {} removes that.

If an application itself removes a temporary directory, Dir.mktmpdir
without a block should be used.
It avoids the problem above because Dir.mktmpdir without a block
doesn't remove the directory anyway.
-- 
Tanaka Akira