Git Mailing List Archive mirror
 help / color / mirror / Atom feed
From: "Elijah Newren via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: Elijah Newren <newren@gmail.com>,
	Calvin Wan <calvinwan@google.com>, Jeff King <peff@peff.net>,
	Glen Choo <chooglen@google.com>, Elijah Newren <newren@gmail.com>,
	Elijah Newren <newren@gmail.com>
Subject: [PATCH v2 01/27] init-db: document existing bug with core.bare in template config
Date: Fri, 12 May 2023 07:04:02 +0000	[thread overview]
Message-ID: <f7ee69e7e687e8cbdead070df644c5bca23d7578.1683875070.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.1525.v2.git.1683875068.gitgitgadget@gmail.com>

From: Elijah Newren <newren@gmail.com>

The comments in create_default_files() talks about reading config from
the config file in the specified `--templates` directory, which leads to
the question of whether core.bare could be set in such a config file and
thus whether the code is doing the right thing.  It turns out, that it
doesn't; it unconditionally ignores core.bare in the config file in any
--templates directory.  It is not clear to me that fixing it can be done
within this function; it seems to occur too late:
  * create_default_files() is called by init_db()
  * init_db() is called by both builtin/{clone.c,init-db.c}
  * both callers of init_db() call set_git_work_tree() before init_db()
and in order to actual affect whether a repository is bear, we'd need to
somewhere reset these values, not just the is_bare_repository_cfg
setting.

I do not want to open this can of worms at this time; I'm trying to
clean up some headers, for which I need to move some functions, for
which I need to clean up some globals, and that's far enough down the
rabbit hole.  So, simply document the issue with a careful TODO comment
and a few testcases.

Signed-off-by: Elijah Newren <newren@gmail.com>
---
 builtin/init-db.c        | 29 ++++++++++++++++++++++++++++-
 t/t1301-shared-repo.sh   | 22 ++++++++++++++++++++++
 t/t5606-clone-options.sh | 10 ++++++++++
 3 files changed, 60 insertions(+), 1 deletion(-)

diff --git a/builtin/init-db.c b/builtin/init-db.c
index aef40361052..715e94befa0 100644
--- a/builtin/init-db.c
+++ b/builtin/init-db.c
@@ -231,9 +231,36 @@ static int create_default_files(const char *template_path,
 	 * We must make sure command-line options continue to override any
 	 * values we might have just re-read from the config.
 	 */
-	is_bare_repository_cfg = init_is_bare_repository || !work_tree;
 	if (init_shared_repository != -1)
 		set_shared_repository(init_shared_repository);
+	/*
+	 * TODO: heed core.bare from config file in templates if no
+	 *       command-line override given
+	 */
+	is_bare_repository_cfg = init_is_bare_repository || !work_tree;
+	/* TODO (continued):
+	 *
+	 * Unfortunately, the line above is equivalent to
+	 *    is_bare_repository_cfg = !work_tree;
+	 * which ignores the config entirely even if no `--[no-]bare`
+	 * command line option was present.
+	 *
+	 * To see why, note that before this function, there was this call:
+	 *    init_is_bare_repository = is_bare_repository()
+	 * expanding the right hande side:
+	 *                 = is_bare_repository_cfg && !get_git_work_tree()
+	 *                 = is_bare_repository_cfg && !work_tree
+	 * note that the last simplification above is valid because nothing
+	 * calls repo_init() or set_git_work_tree() between any of the
+	 * relevant calls in the code, and thus the !get_git_work_tree()
+	 * calls will return the same result each time.  So, what we are
+	 * interested in computing is the right hand side of the line of
+	 * code just above this comment:
+	 *     init_is_bare_repository || !work_tree
+	 *        = is_bare_repository_cfg && !work_tree || !work_tree
+	 *        = !work_tree
+	 * because "A && !B || !B == !B" for all boolean values of A & B.
+	 */
 
 	/*
 	 * We would have created the above under user's umask -- under
diff --git a/t/t1301-shared-repo.sh b/t/t1301-shared-repo.sh
index 1b6437ec079..c02fd64793b 100755
--- a/t/t1301-shared-repo.sh
+++ b/t/t1301-shared-repo.sh
@@ -52,6 +52,28 @@ test_expect_success 'shared=all' '
 	test 2 = $(git config core.sharedrepository)
 '
 
+test_expect_failure 'template can set core.bare' '
+	test_when_finished "rm -rf subdir" &&
+	test_when_finished "rm -rf templates" &&
+	test_config core.bare true &&
+	umask 0022 &&
+	mkdir -p templates/ &&
+	cp .git/config templates/config &&
+	git init --template=templates subdir &&
+	test_path_exists subdir/HEAD
+'
+
+test_expect_success 'template can set core.bare but overridden by command line' '
+	test_when_finished "rm -rf subdir" &&
+	test_when_finished "rm -rf templates" &&
+	test_config core.bare true &&
+	umask 0022 &&
+	mkdir -p templates/ &&
+	cp .git/config templates/config &&
+	git init --no-bare --template=templates subdir &&
+	test_path_exists subdir/.git/HEAD
+'
+
 test_expect_success POSIXPERM 'update-server-info honors core.sharedRepository' '
 	: > a1 &&
 	git add a1 &&
diff --git a/t/t5606-clone-options.sh b/t/t5606-clone-options.sh
index 27f9f776389..5890319b97b 100755
--- a/t/t5606-clone-options.sh
+++ b/t/t5606-clone-options.sh
@@ -120,6 +120,16 @@ test_expect_success 'prefers -c config over --template config' '
 
 '
 
+test_expect_failure 'prefers --template config even for core.bare' '
+
+	template="$TRASH_DIRECTORY/template-with-bare-config" &&
+	mkdir "$template" &&
+	git config --file "$template/config" core.bare true &&
+	git clone "--template=$template" parent clone-bare-config &&
+	test "$(git -C clone-bare-config config --local core.bare)" = "true" &&
+	test_path_is_file clone-bare-config/HEAD
+'
+
 test_expect_success 'prefers config "clone.defaultRemoteName" over default' '
 
 	test_config_global clone.defaultRemoteName from_config &&
-- 
gitgitgadget


  reply	other threads:[~2023-05-12  7:04 UTC|newest]

Thread overview: 115+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-07  3:45 [PATCH 00/24] Header cleanups (final splitting of cache.h, and some splitting of other headers) Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 01/24] init-db: remove unnecessary global variable & document existing bug Elijah Newren via GitGitGadget
2023-05-11 17:24   ` Calvin Wan
2023-05-12  1:55     ` Elijah Newren
2023-05-11 20:43   ` Glen Choo
2023-05-12  1:21     ` Elijah Newren
2023-05-12 17:26       ` Glen Choo
2023-05-07  3:45 ` [PATCH 02/24] init-db, clone: change unnecessary global into passed parameter Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 03/24] setup: adopt shared init-db & clone code Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 04/24] read-cache: move shared commit and ls-files code Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 05/24] add: modify add_files_to_cache() to avoid globals Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 06/24] read-cache: move shared add/checkout/commit code Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 07/24] statinfo: move stat_{data,validity} functions from cache/read-cache Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 08/24] run-command.h: move declarations for run-command.c from cache.h Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 09/24] name-hash.h: move declarations for name-hash.c " Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 10/24] sparse-index.h: move declarations for sparse-index.c " Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 11/24] preload-index.h: move declarations for preload-index.c from elsewhere Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 12/24] diff.h: move declaration for global in diff.c from cache.h Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 13/24] merge.h: move declarations for merge.c " Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 14/24] repository.h: move declaration of the_index " Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 15/24] read-cache*.h: move declarations for read-cache.c functions " Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 16/24] cache.h: remove this no-longer-used header Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 17/24] log-tree: replace include of revision.h with simple forward declaration Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 18/24] repository: remove unnecessary include of path.h Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 19/24] diff.h: remove unnecessary include of oidset.h Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 20/24] list-objects-filter-options.h: remove unneccessary include Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 21/24] builtin.h: remove unneccessary includes Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 22/24] git-compat-util.h: remove unneccessary include of wildmatch.h Elijah Newren via GitGitGadget
2023-05-07  3:45 ` [PATCH 23/24] hash-ll, hashmap: move oidhash() to hash-ll Elijah Newren via GitGitGadget
2023-05-11 17:24   ` Calvin Wan
2023-05-11 18:31     ` Jeff King
2023-05-11 18:39       ` Felipe Contreras
2023-05-12  2:08       ` Elijah Newren
2023-05-12  4:07         ` Jeff King
2023-05-07  3:45 ` [PATCH 24/24] fsmonitor-ll.h: split this header out of fsmonitor.h Elijah Newren via GitGitGadget
2023-05-08 15:29 ` [PATCH 00/24] Header cleanups (final splitting of cache.h, and some splitting of other headers) Junio C Hamano
2023-05-09  1:31   ` Elijah Newren
2023-05-09 16:03     ` Junio C Hamano
2023-05-08 15:55 ` Junio C Hamano
2023-05-11 17:41 ` Calvin Wan
2023-05-12  6:58   ` Elijah Newren
2023-05-12  7:04 ` [PATCH v2 00/27] " Elijah Newren via GitGitGadget
2023-05-12  7:04   ` Elijah Newren via GitGitGadget [this message]
2023-05-12 21:34     ` [PATCH v2 01/27] init-db: document existing bug with core.bare in template config Jonathan Tan
2023-05-16  3:08       ` Elijah Newren
2023-05-12  7:04   ` [PATCH v2 02/27] init-db: remove unnecessary global variable Elijah Newren via GitGitGadget
2023-05-12 20:20     ` Glen Choo
2023-05-12  7:04   ` [PATCH v2 03/27] init-db, clone: change unnecessary global into passed parameter Elijah Newren via GitGitGadget
2023-05-12 21:28     ` Jonathan Tan
2023-05-16  2:57       ` Elijah Newren
2023-05-12  7:04   ` [PATCH v2 04/27] setup: adopt shared init-db & clone code Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 05/27] read-cache: move shared commit and ls-files code Elijah Newren via GitGitGadget
2023-05-12 21:25     ` Jonathan Tan
2023-05-12  7:04   ` [PATCH v2 06/27] add: modify add_files_to_cache() to avoid globals Elijah Newren via GitGitGadget
2023-05-15 21:44     ` Jonathan Tan
2023-05-12  7:04   ` [PATCH v2 07/27] read-cache: move shared add/checkout/commit code Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 08/27] statinfo: move stat_{data,validity} functions from cache/read-cache Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 09/27] run-command.h: move declarations for run-command.c from cache.h Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 10/27] name-hash.h: move declarations for name-hash.c " Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 11/27] sparse-index.h: move declarations for sparse-index.c " Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 12/27] preload-index.h: move declarations for preload-index.c from elsewhere Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 13/27] diff.h: move declaration for global in diff.c from cache.h Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 14/27] merge.h: move declarations for merge.c " Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 15/27] repository.h: move declaration of the_index " Elijah Newren via GitGitGadget
2023-05-15 21:50     ` Jonathan Tan
2023-05-12  7:04   ` [PATCH v2 16/27] read-cache*.h: move declarations for read-cache.c functions " Elijah Newren via GitGitGadget
2023-05-16  0:00     ` Jonathan Tan
2023-05-12  7:04   ` [PATCH v2 17/27] cache.h: remove this no-longer-used header Elijah Newren via GitGitGadget
2023-05-16  0:02     ` Jonathan Tan
2023-05-16  3:02       ` Elijah Newren
2023-05-12  7:04   ` [PATCH v2 18/27] log-tree: replace include of revision.h with simple forward declaration Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 19/27] repository: remove unnecessary include of path.h Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 20/27] diff.h: remove unnecessary include of oidset.h Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 21/27] list-objects-filter-options.h: remove unneccessary include Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 22/27] builtin.h: remove unneccessary includes Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 23/27] git-compat-util.h: remove unneccessary include of wildmatch.h Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 24/27] merge-ll: rename from ll-merge Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 25/27] khash: name the structs that khash declares Elijah Newren via GitGitGadget
2023-05-12  7:04   ` [PATCH v2 26/27] hash-ll, hashmap: move oidhash() to hash-ll Elijah Newren via GitGitGadget
2023-05-16  0:16     ` Jonathan Tan
2023-05-16  3:06       ` Elijah Newren
2023-05-12  7:04   ` [PATCH v2 27/27] fsmonitor-ll.h: split this header out of fsmonitor.h Elijah Newren via GitGitGadget
2023-05-16  0:17     ` Jonathan Tan
2023-05-16  3:07       ` Elijah Newren
2023-05-16  6:33   ` [PATCH v3 00/28] Header cleanups (final splitting of cache.h, and some splitting of other headers) Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 01/28] init-db: document existing bug with core.bare in template config Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 02/28] init-db: remove unnecessary global variable Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 03/28] init-db, clone: change unnecessary global into passed parameter Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 04/28] setup: adopt shared init-db & clone code Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 05/28] read-cache: move shared commit and ls-files code Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 06/28] add: modify add_files_to_cache() to avoid globals Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 07/28] read-cache: move shared add/checkout/commit code Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 08/28] statinfo: move stat_{data,validity} functions from cache/read-cache Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 09/28] run-command.h: move declarations for run-command.c from cache.h Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 10/28] name-hash.h: move declarations for name-hash.c " Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 11/28] sparse-index.h: move declarations for sparse-index.c " Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 12/28] preload-index.h: move declarations for preload-index.c from elsewhere Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 13/28] diff.h: move declaration for global in diff.c from cache.h Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 14/28] merge.h: move declarations for merge.c " Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 15/28] repository.h: move declaration of the_index " Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 16/28] read-cache*.h: move declarations for read-cache.c functions " Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 17/28] cache.h: remove this no-longer-used header Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 18/28] log-tree: replace include of revision.h with simple forward declaration Elijah Newren via GitGitGadget
2023-05-16  6:33     ` [PATCH v3 19/28] repository: remove unnecessary include of path.h Elijah Newren via GitGitGadget
2023-05-16  6:34     ` [PATCH v3 20/28] diff.h: remove unnecessary include of oidset.h Elijah Newren via GitGitGadget
2023-05-16  6:34     ` [PATCH v3 21/28] list-objects-filter-options.h: remove unneccessary include Elijah Newren via GitGitGadget
2023-05-16  6:34     ` [PATCH v3 22/28] builtin.h: remove unneccessary includes Elijah Newren via GitGitGadget
2023-05-16  6:34     ` [PATCH v3 23/28] git-compat-util.h: remove unneccessary include of wildmatch.h Elijah Newren via GitGitGadget
2023-05-16  6:34     ` [PATCH v3 24/28] merge-ll: rename from ll-merge Elijah Newren via GitGitGadget
2023-05-16  6:34     ` [PATCH v3 25/28] khash: name the structs that khash declares Elijah Newren via GitGitGadget
2023-05-16  6:34     ` [PATCH v3 26/28] object-store-ll.h: split this header out of object-store.h Elijah Newren via GitGitGadget
2023-05-16  6:34     ` [PATCH v3 27/28] hash-ll, hashmap: move oidhash() to hash-ll Elijah Newren via GitGitGadget
2023-05-16  6:34     ` [PATCH v3 28/28] fsmonitor-ll.h: split this header out of fsmonitor.h Elijah Newren via GitGitGadget
2023-05-23 19:49     ` [PATCH v3 00/28] Header cleanups (final splitting of cache.h, and some splitting of other headers) Calvin Wan
2023-05-24  0:11       ` Elijah Newren

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=f7ee69e7e687e8cbdead070df644c5bca23d7578.1683875070.git.gitgitgadget@gmail.com \
    --to=gitgitgadget@gmail.com \
    --cc=calvinwan@google.com \
    --cc=chooglen@google.com \
    --cc=git@vger.kernel.org \
    --cc=newren@gmail.com \
    --cc=peff@peff.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).