Re: Key management with tests - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: Key management with tests
Date
Msg-id 20210126000944.GA18075@momjian.us
Whole thread Raw
In response to Re: Key management with tests  (Alvaro Herrera <alvherre@alvh.no-ip.org>)
Responses Re: Key management with tests
List pgsql-hackers
On Mon, Jan 25, 2021 at 08:12:01PM -0300, Álvaro Herrera wrote:
> In patch 1,
> 
> * The docs are not clear on what happens if --auth-prompt is not given
> but an auth prompt is required for the program to work.  Should it exit
> with a status other than 0?

Uh, I think the docs talk about this:

    It can prompt from the terminal if
    option>--authprompt</option> is used.  In the parameter
    value, <literal>%R</literal> is replaced by a file descriptor
    number opened to the terminal that started the server.  A file
    descriptor is only available if enabled at server start via
    <option>-R</option>.  If <literal>%R</literal> is specified and
    no file descriptor is available, the server will not start.

The code is:

    case 'R':
    {
        char fd_str[20];

        if (terminal_fd == -1)
        {
            ereport(ERROR,
                    (errcode(ERRCODE_INTERNAL_ERROR),
                     errmsg("cluster key command referenced %%R, but --authprompt not specified")));
        }

Does that help?

> * BootStrapKmgr claims it is called by initdb, but that doesn't seem to
> be the case.

Well, initdb starts the postmaster in --boot mode, and that calls
BootStrapKmgr().  Does that help?

> * Also, BootStrapKmgr is the only one that checks USE_OPENSSL; what if a
> with-openssl build inits the datadir, and then a non-openssl runs it?
> What if it's the other way around?  I think you'd get a failure in
> stat() ...

Wow, I never considered that.  I have added a check to InitializeKmgr().
Thanks.

> * ... oh, KMGR_DIR_PID is used but not defined anywhere.  Is it defined
> in some later commit?  If so, then I think you've chosen to split the
> patch series wrong.

OK, fixed.  It is in include/common/kmgr_utils.c, which was in #3.

> May I suggest to use "git format-patch" to produce the patch files?  When
> working with a series like this, trying to do patch handling manually
> like you seem to be doing, is much more time-consuming and error prone.
> For example, with a branch containing individual commits, you could use 
>   git rebase -i origin/master -x "make install check-world"
> or similar, so that each commit is built and tested individually.

I used "git format-patch".  Are you asking for seven commits that then
generate seven files via one format-patch run?  Or is the primary issue
that you want compile testing for each patch?

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EDB                                      https://enterprisedb.com

  The usefulness of a cup is in its emptiness, Bruce Lee




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