From: Patrick Steinhardt <ps@pks.im>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>
Subject: [PATCH v3 7/8] refs: stop resolving ref corresponding to reflogs
Date: Wed, 21 Feb 2024 13:37:43 +0100 [thread overview]
Message-ID: <fc96d5bbabe7986d08eb1645549b5591784521e4.1708518982.git.ps@pks.im> (raw)
In-Reply-To: <cover.1708518982.git.ps@pks.im>
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The reflog iterator tries to resolve the corresponding ref for every
reflog that it is about to yield. Historically, this was done due to
multiple reasons:
- It ensures that the refname is safe because we end up calling
`check_refname_format()`. Also, non-conformant refnames are skipped
altogether.
- The iterator used to yield the resolved object ID as well as its
flags to the callback. This info was never used though, and the
corresponding parameters were dropped in the preceding commit.
- When a ref is corrupt then the reflog is not emitted at all.
We're about to introduce a new `git reflog list` subcommand that will
print all reflogs that the refdb knows about. Skipping over reflogs
whose refs are corrupted would be quite counterproductive in this case
as the user would have no way to learn about reflogs which may still
exist in their repository to help and rescue such a corrupted ref. Thus,
the only remaining reason for why we'd want to resolve the ref is to
verify its refname.
Refactor the code to call `check_refname_format()` directly instead of
trying to resolve the ref. This is significantly more efficient given
that we don't have to hit the object database anymore to list reflogs.
And second, it ensures that we end up showing reflogs of broken refs,
which will help to make the reflog more useful.
Note that this really only impacts the case where the corresponding ref
is corrupt. Reflogs for nonexistent refs would have been returned to the
caller beforehand already as we did not pass `RESOLVE_REF_READING` to
the function, and thus `refs_resolve_ref_unsafe()` would have returned
successfully in that case.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
---
refs/files-backend.c | 12 ++----------
refs/reftable-backend.c | 6 ++----
2 files changed, 4 insertions(+), 14 deletions(-)
diff --git a/refs/files-backend.c b/refs/files-backend.c
index c7aff6b331..6f98168a81 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -2129,17 +2129,9 @@ static int files_reflog_iterator_advance(struct ref_iterator *ref_iterator)
while ((ok = dir_iterator_advance(diter)) == ITER_OK) {
if (!S_ISREG(diter->st.st_mode))
continue;
- if (diter->basename[0] == '.')
+ if (check_refname_format(diter->basename,
+ REFNAME_ALLOW_ONELEVEL))
continue;
- if (ends_with(diter->basename, ".lock"))
- continue;
-
- if (!refs_resolve_ref_unsafe(iter->ref_store,
- diter->relative_path, 0,
- NULL, NULL)) {
- error("bad ref for %s", diter->path.buf);
- continue;
- }
iter->base.refname = diter->relative_path;
return ITER_OK;
diff --git a/refs/reftable-backend.c b/refs/reftable-backend.c
index 4998b676c2..6c11c4a5e3 100644
--- a/refs/reftable-backend.c
+++ b/refs/reftable-backend.c
@@ -1616,11 +1616,9 @@ static int reftable_reflog_iterator_advance(struct ref_iterator *ref_iterator)
if (iter->last_name && !strcmp(iter->log.refname, iter->last_name))
continue;
- if (!refs_resolve_ref_unsafe(&iter->refs->base, iter->log.refname,
- 0, NULL, NULL)) {
- error(_("bad ref for %s"), iter->log.refname);
+ if (check_refname_format(iter->log.refname,
+ REFNAME_ALLOW_ONELEVEL))
continue;
- }
free(iter->last_name);
iter->last_name = xstrdup(iter->log.refname);
--
2.44.0-rc1
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next prev parent reply other threads:[~2024-02-21 12:37 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-19 14:35 [PATCH 0/6] reflog: introduce subcommand to list reflogs Patrick Steinhardt
2024-02-19 14:35 ` [PATCH 1/6] dir-iterator: pass name to `prepare_next_entry_data()` directly Patrick Steinhardt
2024-02-19 14:35 ` [PATCH 2/6] dir-iterator: support iteration in sorted order Patrick Steinhardt
2024-02-19 23:39 ` Junio C Hamano
2024-02-20 8:34 ` Patrick Steinhardt
2024-02-19 14:35 ` [PATCH 3/6] refs/files: sort reflogs returned by the reflog iterator Patrick Steinhardt
2024-02-20 0:04 ` Junio C Hamano
2024-02-20 8:34 ` Patrick Steinhardt
2024-02-19 14:35 ` [PATCH 4/6] refs: drop unused params from the reflog iterator callback Patrick Steinhardt
2024-02-20 0:14 ` Junio C Hamano
2024-02-20 8:34 ` Patrick Steinhardt
2024-02-19 14:35 ` [PATCH 5/6] refs: stop resolving ref corresponding to reflogs Patrick Steinhardt
2024-02-20 0:14 ` Junio C Hamano
2024-02-20 8:34 ` Patrick Steinhardt
2024-02-19 14:35 ` [PATCH 6/6] builtin/reflog: introduce subcommand to list reflogs Patrick Steinhardt
2024-02-20 0:32 ` Junio C Hamano
2024-02-20 8:34 ` Patrick Steinhardt
2024-02-20 9:06 ` [PATCH v2 0/7] reflog: " Patrick Steinhardt
2024-02-20 9:06 ` [PATCH v2 1/7] dir-iterator: pass name to `prepare_next_entry_data()` directly Patrick Steinhardt
2024-02-20 9:06 ` [PATCH v2 2/7] dir-iterator: support iteration in sorted order Patrick Steinhardt
2024-02-20 9:06 ` [PATCH v2 3/7] refs/files: sort reflogs returned by the reflog iterator Patrick Steinhardt
2024-02-20 9:06 ` [PATCH v2 4/7] refs: always treat iterators as ordered Patrick Steinhardt
2024-02-20 9:06 ` [PATCH v2 5/7] refs: drop unused params from the reflog iterator callback Patrick Steinhardt
2024-02-20 9:06 ` [PATCH v2 6/7] refs: stop resolving ref corresponding to reflogs Patrick Steinhardt
2024-02-20 9:06 ` [PATCH v2 7/7] builtin/reflog: introduce subcommand to list reflogs Patrick Steinhardt
2024-04-24 7:30 ` Teng Long
2024-04-24 8:01 ` Patrick Steinhardt
2024-04-24 14:53 ` Junio C Hamano
2024-02-20 17:22 ` [PATCH v2 0/7] reflog: " Junio C Hamano
2024-02-21 11:48 ` Patrick Steinhardt
2024-02-21 12:37 ` [PATCH v3 0/8] " Patrick Steinhardt
2024-02-21 12:37 ` [PATCH v3 1/8] dir-iterator: pass name to `prepare_next_entry_data()` directly Patrick Steinhardt
2024-02-21 12:37 ` [PATCH v3 2/8] dir-iterator: support iteration in sorted order Patrick Steinhardt
2024-02-21 12:37 ` [PATCH v3 3/8] refs/files: sort reflogs returned by the reflog iterator Patrick Steinhardt
2024-02-21 12:37 ` [PATCH v3 4/8] refs/files: sort merged worktree and common reflogs Patrick Steinhardt
2024-02-21 12:37 ` [PATCH v3 5/8] refs: always treat iterators as ordered Patrick Steinhardt
2024-02-21 12:37 ` [PATCH v3 6/8] refs: drop unused params from the reflog iterator callback Patrick Steinhardt
2024-02-21 12:37 ` Patrick Steinhardt [this message]
2024-02-21 12:37 ` [PATCH v3 8/8] builtin/reflog: introduce subcommand to list reflogs Patrick Steinhardt
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