From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
To: Anders Kaseorg <andersk@mit.edu>
Cc: Junio C Hamano <gitster@pobox.com>, Jeff King <peff@peff.net>,
git@vger.kernel.org, Andreas Heiduk <andreas.heiduk@mathema.de>
Subject: Re: [PATCH v4 1/4] fetch: Protect branches checked out in all worktrees
Date: Tue, 9 Nov 2021 17:09:47 +0100 (CET) [thread overview]
Message-ID: <nycvar.QRO.7.76.6.2111091706290.54@tvgsbejvaqbjf.bet> (raw)
In-Reply-To: <20211109030028.2196416-1-andersk@mit.edu>
[-- Attachment #1: Type: text/plain, Size: 4372 bytes --]
Hi Anders,
On Mon, 8 Nov 2021, Anders Kaseorg wrote:
> Refuse to fetch into the currently checked out branch of any working
> tree, not just the current one.
>
> Fixes this previously reported bug:
>
> https://public-inbox.org/git/cb957174-5e9a-5603-ea9e-ac9b58a2eaad@mathema.de
>
> As a side effect of using find_shared_symref, we’ll also refuse the
> fetch when we’re on a detached HEAD because we’re rebasing or bisecting
> on the branch in question. This seems like a sensible change.
>
> Signed-off-by: Anders Kaseorg <andersk@mit.edu>
> ---
> builtin/fetch.c | 28 ++++++++++++++--------------
> t/t5516-fetch-push.sh | 18 ++++++++++++++++++
> 2 files changed, 32 insertions(+), 14 deletions(-)
>
> diff --git a/builtin/fetch.c b/builtin/fetch.c
> index f7abbc31ff..0ef2170ef9 100644
> --- a/builtin/fetch.c
> +++ b/builtin/fetch.c
> @@ -28,6 +28,7 @@
> #include "promisor-remote.h"
> #include "commit-graph.h"
> #include "shallow.h"
> +#include "worktree.h"
>
> #define FORCED_UPDATES_DELAY_WARNING_IN_MS (10 * 1000)
>
> @@ -854,7 +855,7 @@ static int update_local_ref(struct ref *ref,
> int summary_width)
> {
> struct commit *current = NULL, *updated;
> - struct branch *current_branch = branch_get(NULL);
> + const struct worktree *wt;
> const char *pretty_ref = prettify_refname(ref->name);
> int fast_forward = 0;
>
> @@ -868,16 +869,18 @@ static int update_local_ref(struct ref *ref,
> return 0;
> }
>
> - if (current_branch &&
> - !strcmp(ref->name, current_branch->name) &&
> - !(update_head_ok || is_bare_repository()) &&
> + if (!update_head_ok &&
> + (wt = find_shared_symref("HEAD", ref->name)) &&
> + !wt->is_bare &&
> !is_null_oid(&ref->old_oid)) {
> /*
> * If this is the head, and it's not okay to update
> * the head, and the old value of the head isn't empty...
> */
> format_display(display, '!', _("[rejected]"),
> - _("can't fetch in current branch"),
> + wt->is_current ?
> + _("can't fetch in current branch") :
> + _("checked out in another worktree"),
> remote, pretty_ref, summary_width);
> return 1;
> }
> @@ -1387,16 +1390,13 @@ static int prune_refs(struct refspec *rs, struct ref *ref_map,
>
> static void check_not_current_branch(struct ref *ref_map)
> {
> - struct branch *current_branch = branch_get(NULL);
> -
> - if (is_bare_repository() || !current_branch)
> - return;
> -
> + const struct worktree *wt;
> for (; ref_map; ref_map = ref_map->next)
> - if (ref_map->peer_ref && !strcmp(current_branch->refname,
> - ref_map->peer_ref->name))
> - die(_("Refusing to fetch into current branch %s "
> - "of non-bare repository"), current_branch->refname);
> + if (ref_map->peer_ref &&
> + (wt = find_shared_symref("HEAD", ref_map->peer_ref->name)))
Do we need `&& !wt->is_bare` here, too?
> + die(_("Refusing to fetch into branch '%s' "
> + "checked out at '%s'"),
> + ref_map->peer_ref->name, wt->path);
> }
>
> static int truncate_fetch_head(void)
> diff --git a/t/t5516-fetch-push.sh b/t/t5516-fetch-push.sh
> index 8212ca56dc..2c2d6fa6e7 100755
> --- a/t/t5516-fetch-push.sh
> +++ b/t/t5516-fetch-push.sh
> @@ -1771,4 +1771,22 @@ test_expect_success 'denyCurrentBranch and worktrees' '
> git -C cloned push origin HEAD:new-wt &&
> test_must_fail git -C cloned push --delete origin new-wt
> '
> +
> +test_expect_success 'refuse fetch to current branch of worktree' '
> + test_when_finished "git worktree remove --force wt" &&
Do we also need `&& git branch -D wt` here?
> + git worktree add wt &&
> + test_commit apple &&
> + test_must_fail git fetch . HEAD:wt &&
> + git fetch -u . HEAD:wt
Maybe even `test_path_exists wt/apple.t`, to verify that the worktree has
been updated?
These would also apply to the next test case.
> +'
> +
> +test_expect_success 'refuse fetch to current branch of bare repository worktree' '
> + test_when_finished "rm -fr bare.git" &&
> + git clone --bare . bare.git &&
> + git -C bare.git worktree add wt &&
> + test_commit banana &&
> + test_must_fail git -C bare.git fetch .. HEAD:wt &&
> + git -C bare.git fetch -u .. HEAD:wt
> +'
> +
> test_done
Thanks for working on this!
Dscho
next prev parent reply other threads:[~2021-11-09 16:10 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-08 20:16 [PATCH v3 2/2] receive-pack: Protect current branch for bare repository worktree Anders Kaseorg
2021-11-08 23:28 ` Junio C Hamano
2021-11-09 0:44 ` Junio C Hamano
2021-11-09 16:04 ` Johannes Schindelin
2021-11-09 1:10 ` Anders Kaseorg
2021-11-09 3:00 ` [PATCH v4 1/4] fetch: Protect branches checked out in all worktrees Anders Kaseorg
2021-11-09 3:00 ` [PATCH v4 2/4] receive-pack: Clean dead code from update_worktree() Anders Kaseorg
2021-11-09 16:16 ` Johannes Schindelin
2021-11-09 22:58 ` Anders Kaseorg
2021-11-09 3:00 ` [PATCH v4 3/4] receive-pack: Protect current branch for bare repository worktree Anders Kaseorg
2021-11-09 16:22 ` Johannes Schindelin
2021-11-09 23:03 ` Anders Kaseorg
2021-11-09 23:09 ` [PATCH v5 1/4] fetch: Protect branches checked out in all worktrees Anders Kaseorg
2021-11-09 23:09 ` [PATCH v5 2/4] receive-pack: Clean dead code from update_worktree() Anders Kaseorg
2021-11-10 3:57 ` Ævar Arnfjörð Bjarmason
2021-11-10 12:11 ` Johannes Schindelin
2021-11-09 23:09 ` [PATCH v5 3/4] receive-pack: Protect current branch for bare repository worktree Anders Kaseorg
2021-11-10 4:00 ` Ævar Arnfjörð Bjarmason
2021-11-09 23:09 ` [PATCH v5 4/4] branch: Protect branches checked out in all worktrees Anders Kaseorg
2021-11-10 4:03 ` Ævar Arnfjörð Bjarmason
2021-11-10 3:56 ` [PATCH v5 1/4] fetch: " Ævar Arnfjörð Bjarmason
2021-11-10 12:18 ` Johannes Schindelin
2021-11-10 23:46 ` Junio C Hamano
2021-11-11 0:11 ` Junio C Hamano
2021-11-10 22:09 ` Junio C Hamano
2021-11-10 23:33 ` Anders Kaseorg
2021-11-09 3:00 ` [PATCH v4 4/4] branch: " Anders Kaseorg
2021-11-09 16:24 ` Johannes Schindelin
2021-11-09 16:09 ` Johannes Schindelin [this message]
2021-11-09 22:52 ` [PATCH v4 1/4] fetch: " Anders Kaseorg
2021-11-09 23:00 ` Junio C Hamano
2021-11-09 23:28 ` Junio C Hamano
2021-11-09 23:32 ` Anders Kaseorg
2021-11-09 15:37 ` [PATCH v3 2/2] receive-pack: Protect current branch for bare repository worktree Johannes Schindelin
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