Subject: Re: [PATCH] git init: --bare/--shared overrides system/global config

From: "Shawn O. Pearce" <[email-masked]>
Date: Mon, 6 Oct 2008 07:14:52 -0700

Deskin Miller <[email-masked]> wrote:
> From b6144562983703079a1eba8cdac3506c18d751a3 Mon Sep 17 00:00:00 2001
> From: Deskin Miller <[email-masked]>
> Date: Sat, 4 Oct 2008 20:07:44 -0400

FWIW please don't include these lines in the commit message part
of the patch email.  The only reason to include a "From: blah" line
(the 2nd one above) is when the name and/or email address that you
want to attribute the change to differs from the name/email that
the message is sent from.  (E.g. sent from gmail.com but you want
to attribute to umich.edu.)
 
> If core.bare or core.sharedRepository are set in /etc/gitconfig or
> ~/.gitconfig, then 'git init' will read the values when constructing a
> new config file; [...]
> ---

Yikes.

> diff --git a/builtin-init-db.c b/builtin-init-db.c
> index 8140c12..38e282c 100644
> --- a/builtin-init-db.c
> +++ b/builtin-init-db.c
> @@ -191,6 +194,8 @@ static int create_default_files(const char *template_path)
>  	copy_templates(template_path);
>  
>  	git_config(git_default_config, NULL);
> +	is_bare_repository_cfg = init_is_bare_repository;
> +	shared_repository = init_shared_repository;

Is this really the right thing to do?  It seems like it would prevent
a user from setting core.sharedRepository = group in their template
and thus always have a shared repository on their system.

I think we should only be using the command line shared option if
it was supplied, but if it was not we should be honoring what we
recieved from git_config().

However I agree that is_bare shouldn't be inherited from the config.
Its a per-repository attribute and no matter what the user asked
for in their /etc/gitconfig or ~/.gitconfig we should correctly
set it for this current repository.
  
> diff --git a/t/t0001-init.sh b/t/t0001-init.sh
> index 620da5b..6a6bca0 100755
> --- a/t/t0001-init.sh
> +++ b/t/t0001-init.sh
> @@ -167,4 +167,21 @@ test_expect_success 'init with --template (blank)' '
>  	! test -f template-blank/.git/info/exclude
>  '
>  
> +test_expect_success 'init --bare/--shared overrides system/global config' '
> +	(
> +		HOME="`pwd`" &&
> +		export HOME &&
> +		test_config="$HOME"/.gitconfig &&
> +		unset GIT_CONFIG_NOGLOBAL &&
> +		git config -f "$test_config" core.bare false &&
> +		git config -f "$test_config" core.sharedRepository 0640 &&
> +		mkdir init-bare-shared-override &&
> +		cd init-bare-shared-override &&
> +		git init --bare --shared=0666
> +	) &&
> +	check_config init-bare-shared-override true unset &&
> +	test 0666 = \
> +	`git config -f init-bare-shared-override/config core.sharedRepository`
> +'

A second related test would be a ~/.gitconfig which sets
core.sharedRepository = 0666 and then does "git init".  I think
the right outcome is a repository which has that set.

-- 
Shawn.