Jira (PUP-7394) Puppet::Util.replace_file cannot be used to create a read-only file (on non-Windows)

[Ethan Brown (JIRA)]

Title: Message Title

Ethan Brown created an issue   Puppet / PUP-7394 Puppet::Util.replace_file cannot be used to create a read-only file (on non-Windows) Issue Type: Bug Assignee: Unassigned Created: 2017/03/23 2:09 PM Priority: Normal Reporter: Ethan Brown Assuming a file does not yet exist, a call to FileUtils.replace_file like the following will fail: Puppet::Util.replace_file('/tmp/foo', 0440) { |of| FileUtils.copy_stream(StringIO.new("\u1234"), of) } With an error like: Errno::EACCES: Permission denied @ rb_sysopen - /tmp/foo20170323-24678-rg0fn9 from /usr/local/opt/rbenv/versions/2.1.9/lib/ruby/2.1.0/fileutils.rb:494:in `initialize' This is because the replace_file code will use permissions of an existing file should it exist, but will try to chmod a file *before* yielding it back in the block if it does not yet exist. Therefore it is impossible to create a new read-only file like you might normally with Ruby itself like: File.open('/tmp/foo.txt', 'w+', 0440) { |fh| fh.write('hello world') } # => 11 Also note that the code path on Windows is slightly different and does not exhibit the same problem. Add Comment   This message was sent by Atlassian JIRA (v6.4.14#64029-sha1:ae256fe) -- You received this message because you are subscribed to the Google Groups "Puppet Bugs" group. To unsubscribe from this group and stop receiving emails from it, send an email to puppet-bugs+unsubscr...@googlegroups.com. To post to this group, send email to puppet-bugs@googlegroups.com. Visit this group at https://groups.google.com/group/puppet-bugs. For more options, visit https://groups.google.com/d/optout.