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The fix is short (~30 lines), but the description is not. Sorry.
There is a set of problems caused by files in what I'll refer to as the
"present-despite-SKIP_WORKTREE" state. This commit aims to not just fix
these problems, but remove the entire class as a possibility -- for
those using sparse checkouts. But first, we need to understand the
problems this class presents. A quick outline:
* Problems
* User facing issues
* Problem space complexity
* Maintenance and code correctness challenges
* SKIP_WORKTREE expectations in Git
* Suggested solution
* Pros/Cons of suggested solution
* Notes on testcase modifications
=== User facing issues ===
There are various ways for users to get files to be present in the
working copy despite having the SKIP_WORKTREE bit set for that file in
the index. This may come from:
* various git commands not really supporting the SKIP_WORKTREE bit[1,2]
* users grabbing files from elsewhere and writing them to the worktree
(perhaps even cached in their editor)
* users attempting to "abort" a sparse-checkout operation with a
not-so-early Ctrl+C (updating $GIT_DIR/info/sparse-checkout and the
working tree is not atomic)[3].
Once users have present-despite-SKIP_WORKTREE files, any modifications
users make to these files will be ignored, possibly to users' confusion.
Further:
* these files will degrade performance for the sparse-index case due
to requiring the index to be expanded (see commit 55dfcf9591
("sparse-checkout: clear tracked sparse dirs", 2021-09-08) for why
we try to delete entire directories outside the sparse cone).
* these files will not be updated by by standard commands
(switch/checkout/pull/merge/rebase will leave them alone unless
conflicts happen -- and even then, the conflicted file may be
written somewhere else to avoid overwriting the SKIP_WORKTREE file
that is present and in the way)
* there is nothing in Git that users can use to discover such
files (status, diff, grep, etc. all ignore it)
* there is no reasonable mechanism to "recover" from such a condition
(neither `git sparse-checkout reapply` nor `git reset --hard` will
correct it).
So, not only are users modifications ignored, but the files get
progressively more stale over time. At some point in the future, they
may change their sparseness specification or disable sparse-checkouts.
At that time, all present-despite-SKIP_WORKTREE files will show up as
having lots of modifications because they represent a version from a
different branch or commit. These might include user-made local changes
from days before, but the only way to tell is to have users look through
them all closely.
If these users come to others for help, there will be no logs that
explain the issue; it's just a mysterious list of changes. Users might
adamantly claim (correctly, as it turns out) that they didn't modify
these files, while others presume they did.
[1] https://lore.kernel.org/git/xmqqbmb1a7ga.fsf@gitster-ct.c.googlers.com/
[2] https://lore.kernel.org/git/CABPp-BH9tju7WVm=QZDOvaMDdZbpNXrVWQdN-jmfN8wC6YVhmw@mail.gmail.com/
[3] https://lore.kernel.org/git/CABPp-BFnFpzwGC11TLoLs8YK5yiisA5D5-fFjXnJsbESVDwZsA@mail.gmail.com/
=== Problem space complexity ===
SKIP_WORKTREE has been part of Git for over a decade. Duy did lots of
work on it initially, and several others have since come along and put
lots of work into it. Stolee spent most of 2021 on the sparse-index,
with lots of bugfixes along the way including to non-sparse-index cases
as we are still trying to get sparse checkouts to behave reasonably.
Basically every codepath throughout the treat needs to be aware of an
additional type of file: tracked-but-not-present. The extra type
results in lots of extra testcases and lots of extra code everywhere.
But, the sad thing is that we actually have more than one extra type.
We have tracked, tracked-but-not-present (SKIP_WORKTREE), and
tracked-but-promised-to-not-be-present-but-is-present-anyway
(present-despite-SKIP_WORKTREE). Two types is a monumental amount of
effort to support, and adding a third feels a bit like insanity[4].
[4] Some examples of which can be seen at
https://lore.kernel.org/git/CABPp-BGJ_Nvi5TmgriD9Bh6eNXE2EDq2f8e8QKXAeYG3BxZafA@mail.gmail.com/
=== Maintenance and code correctness challenges ===
Matheus' patches to grep stalled for nearly a year, in part because of
complications of how to handle sparse-checkouts appropriately in all
cases[5][6] (with trying to sanely figure out how to sanely handle
present-despite-SKIP_WORKTREE files being one of the complications).
His rm/add follow-ups also took months because of those kinds of
issues[7]. The corner cases with things like submodules and
SKIP_WORKTREE with the addition of present-despite-SKIP_WORKTREE start
becoming really complex[8].
We've had to add ugly logic to merge-ort to attempt to handle
present-despite-SKIP_WORKTREE files[9], and basically just been forced
to give up in merge-recursive knowing full well that we'll sometimes
silently discard user modifications. Despite stash essentially being a
merge, it needed extra code (beyond what was in merge-ort and
merge-recursive) to manually tweak SKIP_WORKTREE bits in order to avoid
a few different bugs that'd result in an early abort with a partial
stash application[10].
[5] See https://lore.kernel.org/git/5f3f7ac77039d41d1692ceae4b0c5df3bb45b74a.1612901326.git.matheus.bernardino@usp.br/#t
and the dates on the thread; also Matheus and I had several
conversations off-list trying to resolve the issues over that time
[6] ...it finally kind of got unstuck after
https://lore.kernel.org/git/CABPp-BGJ_Nvi5TmgriD9Bh6eNXE2EDq2f8e8QKXAeYG3BxZafA@mail.gmail.com/
[7] See for example
https://lore.kernel.org/git/CABPp-BHwNoVnooqDFPAsZxBT9aR5Dwk5D9sDRCvYSb8akxAJgA@mail.gmail.com/#t
and quotes like "The core functionality of sparse-checkout has always
been only partially implemented", a statement I still believe is true
today.
[8] https://lore.kernel.org/git/pull.809.git.git.1592356884310.gitgitgadget@gmail.com/
[9] See commit 66b209b86a ("merge-ort: implement CE_SKIP_WORKTREE
handling with conflicted entries", 2021-03-20)
[10] See commit ba359fd507 ("stash: fix stash application in
sparse-checkouts", 2020-12-01)
=== SKIP_WORKTREE expectations in Git ===
A couple quotes:
* From [11] (before the "sparse-checkout" command existed):
If it needs too many special cases, hacks, and conditionals, then it
is not worth the complexity---if it is easier to write a correct code
by allowing Git to populate working tree files, it is perfectly fine
to do so.
In a sense, the sparse checkout "feature" itself is a hack by itself,
and that is why I think this part should be "best effort" as well.
* From the git-sparse-checkout manual (still present today):
THIS COMMAND IS EXPERIMENTAL. ITS BEHAVIOR, AND THE BEHAVIOR OF OTHER
COMMANDS IN THE PRESENCE OF SPARSE-CHECKOUTS, WILL LIKELY CHANGE IN
THE FUTURE.
[11] https://lore.kernel.org/git/xmqqbmb1a7ga.fsf@gitster-ct.c.googlers.com/
=== Suggested solution ===
SKIP_WORKTREE was written to allow sparse-checkouts, in particular, as
the name of the option implies, to allow the file to NOT be in the
worktree but consider it to be unchanged rather than deleted.
The suggests a simple solution: present-despite-SKIP_WORKTREE files
should not exist, for those using sparse-checkouts.
Enforce this at index loading time by checking if core.sparseCheckout is
true; if so, check files in the index with the SKIP_WORKTREE bit set to
verify that they are absent from the working tree. If they are present,
unset the bit (in memory, though any commands that write to the index
will record the update).
Users can, of course, can get the SKIP_WORKTREE bit back such as by
running `git sparse-checkout reapply` (if they have ensured the file is
unmodified and doesn't match the specified sparsity patterns).
=== Pros/Cons of suggested solution ===
Pros:
* Solves the user visible problems reported above, which I've been
complaining about for nearly a year but couldn't find a solution to.
* Helps prevent slow performance degradation with a sparse-index.
* Much easier behavior in sparse-checkouts for users to reason about
* Very simple, ~30 lines of code.
* Significantly simplifies some ugly testcases, and obviates the need
to test an entire class of potential issues.
* Reduces code complexity, reasoning, and maintenance. Avoids
disagreements about weird corner cases[12].
* It has been reported that some users might be (ab)using
SKIP_WORKTREE as a let-me-modify-but-keep-the-file-in-the-worktree
mechanism[13, and a few other similar references]. These users know
of multiple caveats and shortcomings in doing so; perhaps not
surprising given the "SKIP_WORKTREE expecations" section above.
However, these users use `git update-index --skip-worktree`, and not
`git sparse-checkout` or core.sparseCheckout=true. As such, these
users would be unaffected by this change and can continue abusing
the system as before.
[12] https://lore.kernel.org/git/CABPp-BH9tju7WVm=QZDOvaMDdZbpNXrVWQdN-jmfN8wC6YVhmw@mail.gmail.com/
[13] https://stackoverflow.com/questions/13630849/git-difference-between-assume-unchanged-and-skip-worktree
Cons:
* When core.sparseCheckout is enabled, this adds a performance cost to
reading the index. I'll defer discussion of this cost to a subsequent
patch, since I have some optimizations to add.
=== Notes on testcase modifications ===
The good:
* t1011: Compare to two cases above it ('read-tree will not throw away
dirty changes, non-sparse'); since the file is present, it should
match the non-sparse case now
* t1092: sparse-index & sparse-checkout now match full-worktree
behavior in more cases! Yaay for consistency!
* t6428, t7012: look at how much simpler the tests become! Merge and
stash can just fail early telling the user there's a file in the
way, instead of not noticing until it's about to write a file and
then have to implement sudden crash avoidance. Hurray for sanity!
* t7817: sparse behavior better matches full tree behavior. Hurray
for sanity!
The confusing:
* t3705: These changes were ONLY needed on Windows, but they don't
hurt other platforms. Let's discuss each individually:
* core.sparseCheckout should be false by default. Nothing in this
testcase toggles that until many, many tests later. However,
early tests (#5 in particular) were testing `update-index
--skip-worktree` behavior in a non-sparse-checkout, but the
Windows tests in CI were behaving as if core.sparseCheckout=true
had been specified somewhere. I do not have access to a Windows
machine. But I just manually did what should have been a no-op
and turned the config off. And it fixed the test.
* I have no idea why the leftover .gitattributes file from this
test was causing failures for test #18 on Windows, but only with
these changes of mine. Test #18 was checking for empty stderr,
and specifically wanted to know that some error completely
unrelated to file endings did not appear. The leftover
.gitattributes file thus caused some spurious stderr unrelated to
the thing being checked. Since other tests did not intend to
test normalization, just proactively remove the .gitattributes
file. I'm certain this is cleaner and better, I'm just unsure
why/how this didn't trigger problems before.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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For sparse-checkouts, we don't want unpack-trees to error out on files
that are missing from the worktree, so there has traditionally been
logic to make it skip the verify_uptodate() check for these.
Unfortunately, it was skipping the verify_uptodate() check for files
that were expected to *become* SKIP_WORKTREE. For files that were not
already SKIP_WORKTREE, that can cause us to later delete the file in
apply_sparse_checkout(). Only skip the check for files that were
already SKIP_WORKTREE as well to avoid lightly discarding important
changes users may have made to files.
Note 1: unpack-trees.c is already a bit complex, and the logic around
CE_SKIP_WORKTREE and CE_NEW_SKIP_WORKTREE in that file are no exception.
I also tried just replacing CE_NEW_SKIP_WORKTREE with CE_SKIP_WORKTREE
in the verify_uptodate() check instead of checking for both flags, and
found that it also fixed this bug and passed all the tests. I also
attempted to devise a few testcases that might trip either variant of my
fix and was unable to find any problems. It may be that just checking
CE_SKIP_WORKTREE is a better fix, but I'm not sure. I thought it
was a bit safer to strictly reduce the number of cases where we skip the
up-to-date check rather than just toggling which kind of cases skip it,
and thus went with the current variant of the fix.
Note 2: I also wondered if verify_absent() might have a similar bug, but
despite my attempts to try to devise a testcase that would trigger such
a thing, I couldn't find any problematic testcases. Thus, this patch
makes no attempt to apply similar changes to verify_absent() and
verify_absent_if_directory().
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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If a user has a file with local modifications that is not marked as
SKIP_WORKTREE, but the sparsity patterns are such that it should be
marked that way, and the user then invokes a command like
* git checkout -q HEAD^
or
* git read-tree -mu HEAD^
Then the file will be deleted along with all the users' modifications.
Add a testcase demonstrating this problem.
Note: This bug only triggers if something other than 'HEAD' is given;
if the commands above had specified 'HEAD', then the users' file would
be left alone.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* vd/sparse-clean-etc:
update-index: reduce scope of index expansion in do_reupdate
update-index: integrate with sparse index
update-index: add tests for sparse-checkout compatibility
checkout-index: integrate with sparse index
checkout-index: add --ignore-skip-worktree-bits option
checkout-index: expand sparse checkout compatibility tests
clean: integrate with sparse index
reset: reorder wildcard pathspec conditions
reset: fix validation in sparse index test
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Replace unconditional index expansion in 'do_reupdate()' with one scoped to
only where a full index is needed. A full index is only required in
'do_reupdate()' when a sparse directory in the index differs from HEAD; in
that case, the index is expanded and the operation restarted.
Because the index should only be expanded if a sparse directory is modified,
add a test ensuring the index is not expanded when differences only exist
within the sparse cone.
Signed-off-by: Victoria Dye <vdye@github.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Enable use of the sparse index with `update-index`. Most variations of
`update-index` work without explicitly expanding the index or making any
other updates in or outside of `update-index.c`.
The one usage requiring additional changes is `--cacheinfo`; if a file
inside a sparse directory was specified, the index would not be expanded
until after the cache tree is invalidated, leading to a mismatch between the
index and cache tree. This scenario is handled by rearranging
`add_index_entry_with_check`, allowing `index_name_stage_pos` to expand the
index *before* attempting to invalidate the relevant cache tree path,
avoiding cache tree/index corruption.
Signed-off-by: Victoria Dye <vdye@github.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Introduce tests for a variety of `git update-index` use cases, including
performance scenarios. Tests are intended to exercise `update-index` with
options that change the commands interaction with the index (e.g.,
`--again`) and with files/directories inside and outside a sparse checkout
cone.
Of note is that these tests clearly establish the behavior of `git
update-index --add` with untracked, outside-of-cone files. Unlike `git add`,
which fails with an error when provided with such files, `update-index`
succeeds in adding them to the index. Additionally, the `skip-worktree` flag
is *not* automatically added to the new entry. Although this is pre-existing
behavior, there are a couple of reasons to avoid changing it in favor of
consistency with e.g. `git add`:
* `update-index` is low-level command for modifying the index; while it can
perform operations similar to those of `add`, it traditionally has fewer
"guardrails" preventing a user from doing something they may not want to
do (in this case, adding an outside-of-cone, non-`skip-worktree` file to
the index)
* `update-index` typically only exits with an error code if it is incapable
of performing an operation (e.g., if an internal function call fails);
adding a new file outside the sparse checkout definition is still a valid
operation, albeit an inadvisable one
* `update-index` does not implicitly set flags (e.g., `skip-worktree`) when
creating new index entries with `--add`; if flags need to be updated,
options like `--[no-]skip-worktree` allow a user to intentionally set them
All this to say that, while there are valid reasons to consider changing the
treatment of outside-of-cone files in `update-index`, there are also
sufficient reasons for leaving it as-is.
Co-authored-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Victoria Dye <vdye@github.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add repository settings to allow usage of the sparse index.
When using the `--all` option, sparse directories are ignored by default due
to the `skip-worktree` flag, so there is no need to expand the index. If
`--ignore-skip-worktree-bits` is specified, the index is expanded in order
to check out all files.
When checking out individual files, existing behavior in a full index is to
exit with an error if a directory is specified (as the directory name will
not match an index entry). However, it is possible in a sparse index to
match a directory name to a sparse directory index entry, but checking out
that sparse directory still results in an error on checkout. To reduce some
potential confusion for users, `checkout_file(...)` explicitly exits with an
informative error if provided with a sparse directory name. The test
corresponding to this scenario verifies the error message, which now differs
between sparse index and non-sparse index checkouts.
Signed-off-by: Victoria Dye <vdye@github.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Update `checkout-index` to no longer refresh files that have the
`skip-worktree` bit set, exiting with an error if `skip-worktree` filenames
are directly provided to `checkout-index`. The newly-added
`--ignore-skip-worktree-bits` option provides a mechanism to replicate the
old behavior, checking out *all* files specified (even those with
`skip-worktree` enabled).
The ability to toggle whether files should be checked-out based on
`skip-worktree` already exists in `git checkout` and `git restore` (both of
which have an `--ignore-skip-worktree-bits` option). The change to, by
default, ignore `skip-worktree` files is especially helpful for
sparse-checkout; it prevents inadvertent creation of files outside the
sparse definition on disk and eliminates the need to expand a sparse index
when using the `--all` option.
Internal usage of `checkout-index` in `git stash` and `git filter-branch` do
not make explicit use of files with `skip-worktree` enabled, so
`--ignore-skip-worktree-bits` is not added to them.
Helped-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Victoria Dye <vdye@github.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add tests to cover `checkout-index`, with a focus on cases interesting in a
sparse checkout (e.g., files specified outside sparse checkout definition).
New tests are intended to serve as a baseline for existing and/or expected
behavior and performance when integrating `checkout-index` with the sparse
index. Note that the test 'checkout-index --all' is marked as
'test_expect_failure', indicating that `update-index --all` will be modified
in a subsequent patch to behave as the test expects.
Signed-off-by: Victoria Dye <vdye@github.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Remove full index requirement for `git clean` and test to ensure the index
is not expanded in `git clean`. Add to existing test for `git clean` to
verify cleanup of untracked files in sparse directories is consistent
between sparse index and non-sparse index checkouts.
Signed-off-by: Victoria Dye <vdye@github.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Rearrange conditions in method determining whether index expansion is
necessary when a pathspec is specified for `git reset`, placing less
expensive condition first. Additionally, add details & examples to related
code comments to help with readability.
Helped-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Victoria Dye <vdye@github.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Update t1092 test 'reset with pathspecs outside sparse definition' to verify
index contents. The use of `rev-parse` verifies the contents of HEAD, not
the index, providing no real validation of the reset results. Conversely,
`ls-files` reports the contents of the index (OIDs, flags, filenames), which
are then compared across checkouts to ensure compatible index states.
Fixes 741a2c9ffa (reset: expand test coverage for sparse checkouts,
2021-09-27).
Signed-off-by: Victoria Dye <vdye@github.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Some lockfile code called free() in signal-death code path, which
has been corrected.
* ps/lockfile-cleanup-fix:
fetch: fix deadlock when cleaning up lockfiles in async signals
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Code clean-up.
* ma/header-dup-cleanup:
cache.h: drop duplicate `ensure_full_index()` declaration
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Test simplification.
* fs/gpg-unknown-key-test-fix:
t/gpg: simplify test for unknown key
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* ak/protect-any-current-branch:
branch: missing space fix at line 313
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* jt/pack-header-lshift-overflow:
packfile: fix off-by-one error in decoding logic
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* rb/nonstop-lacks-uncompress2:
build: NonStop ships with an older zlib
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Fix calling dynamically loaded functions on Windows.
* ma/windows-dynload-fix:
lazyload: use correct calling conventions
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"git merge $signed_tag" started to drop the tag message from the
default merge message it uses by accident, which has been corrected.
* fs/ssh-signing-key-lifetime:
fmt-merge-msg: prevent use-after-free with signed tags
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Notably, it lacks uncompress2(); use the fallback we ship in our
tree instead.
Signed-off-by: Randall S. Becker <rsbecker@nexbridge.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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shift count being exactly at 7-bit smaller than the long is OK; on
32-bit architecture, shift count starts at 4 and goes through 11, 18
and 25, at which point the guard triggers one iteration too early.
Reported-by: Marc Strapetz <marc.strapetz@syntevo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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To test for a key that is completely unknown to the keyring we need one
to sign the commit with. This was done by generating a new key and not
add it into the keyring. To avoid the key generation overhead and
problems where GPG did hang in CI during it, switch GNUPGHOME to the
empty $GNUPGHOME_NOT_USED instead, therefore making all used keys unknown
for this single `verify-commit` call.
Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Fabian Stelzer <fs@gigacodes.de>
Reviewed-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The message introduced by commit 593a2a5d06 (branch: protect branches
checked out in all worktrees, 2021-12-01) is missing a space in the
first line, add it.
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When merging a signed tag, fmt_merge_msg_sigs() is responsible for
populating the body of the merge message with the names of the signed
tags, their signatures, and the validity of those signatures.
In 02769437e1 (ssh signing: use sigc struct to pass payload,
2021-12-09), check_signature() was taught to pass the object payload via
the sigc struct instead of passing the payload buffer separately.
In effect, 02769437e1 causes buf, and sigc.payload to point at the same
region in memory. This causes a problem for fmt_tag_signature(), which
wants to read from this location, since it is freed beforehand by
signature_check_clear() (which frees it via sigc's `payload` member).
That makes the subsequent use in fmt_tag_signature() a use-after-free.
As a result, merge messages did not contain the body of any signed tags.
Luckily, they tend not to contain garbage, either, since the result of
strstr()-ing the object buffer in fmt_tag_signature() is guarded:
const char *tag_body = strstr(buf, "\n\n");
if (tag_body) {
tag_body += 2;
strbuf_add(tagbuf, tag_body, buf + len - tag_body);
}
Unfortunately, the tests in t6200 did not catch this at the time because
they do not search for the body of signed tags in fmt-merge-msg's
output.
Resolve this by waiting to call signature_check_clear() until after its
contents can be safely discarded. Harden ourselves against any future
regressions in this area by making sure we can find signed tag messages
in the output of fmt-merge-msg, too.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git stash apply" forgot to attempt restoring untracked files when
it failed to restore changes to tracked ones.
* en/stash-df-fix:
stash: do not return before restoring untracked files
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Typofix.
* ms/t-readme-typofix:
t/README: fix typo
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Similar message templates have been consolidated so that
translators need to work on fewer number of messages.
* ja/i18n-similar-messages:
i18n: turn even more messages into "cannot be used together" ones
i18n: ref-filter: factorize "%(foo) atom used without %(bar) atom"
i18n: factorize "--foo outside a repository"
i18n: refactor "unrecognized %(foo) argument" strings
i18n: factorize "no directory given for --foo"
i18n: factorize "--foo requires --bar" and the like
i18n: tag.c factorize i18n strings
i18n: standardize "cannot open" and "cannot read"
i18n: turn "options are incompatible" into "cannot be used together"
i18n: refactor "%s, %s and %s are mutually exclusive"
i18n: refactor "foo and bar are mutually exclusive"
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A corner case bug in the ort merge strategy has been corrected.
* en/merge-ort-renorm-with-rename-delete-conflict-fix:
merge-ort: fix bug with renormalization and rename/delete conflicts
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Extend the guidance to choose the base commit to build your work
on, and hint/nudge contributors to read others' changes.
* jc/doc-submitting-patches-choice-of-base:
SubmittingPatchs: clarify choice of base and testing
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Fix performance-releated bug in "git subtree" (in contrib/).
* jl/subtree-check-parents-argument-passing-fix:
subtree: fix argument handling in check_parents
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The color palette used by "git grep" has been updated to match that
of GNU grep.
* lh/use-gnu-color-in-grep:
grep: align default colors with GNU grep ones
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"git -c branch.autosetupmerge=inherit branch new old" makes "new"
to have the same upstream as the "old" branch, instead of marking
"old" itself as its upstream.
* js/branch-track-inherit:
config: require lowercase for branch.*.autosetupmerge
branch: add flags and config to inherit tracking
branch: accept multiple upstream branches for tracking
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Code clean-up to hide vreportf() from public API.
* ab/usage-die-message:
config API: use get_error_routine(), not vreportf()
usage.c + gc: add and use a die_message_errno()
gc: return from cmd_gc(), don't call exit()
usage.c API users: use die_message() for error() + exit 128
usage.c API users: use die_message() for "fatal :" + exit 128
usage.c: add a die_message() routine
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"git apply --3way" bypasses the attempt to do a three-way
application in more cases to address the regression caused by the
recent change to use direct application as a fallback.
* jz/apply-3-corner-cases:
git-apply: skip threeway in add / rename cases
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Assorted fixlets in reftable code.
* hn/reftable-fixes:
reftable: support preset file mode for writing
reftable: signal overflow
reftable: fix typo in header
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Code refactoring in the reflog part of refs API.
* ab/reflog-prep:
reflog + refs-backend: move "verbose" out of the backend
refs files-backend: assume cb->newlog if !EXPIRE_REFLOGS_DRY_RUN
reflog: reduce scope of "struct rev_info"
reflog expire: don't use lookup_commit_reference_gently()
reflog expire: refactor & use "tip_commit" only for UE_NORMAL
reflog expire: use "switch" over enum values
reflog: change one->many worktree->refnames to use a string_list
reflog expire: narrow scope of "cb" in cmd_reflog_expire()
reflog delete: narrow scope of "cmd" passed to count_reflog_ent()
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"git stash" by default triggers its "push" action, but its
implementation also made "git stash -h" to show short help only for
"git stash push", which has been corrected.
* ab/do-not-limit-stash-help-to-push:
stash: don't show "git stash push" usage on bad "git stash" usage
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Fix dependency rules to generate hook-list.h header file.
* ab/makefile-hook-list-dependency-fix:
Makefile: correct the dependency graph of hook-list.h
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* ab/makefile-pager-env-is-used-only-by-pager.c:
Makefile: move -DPAGER_ENV from BASIC_CFLAGS to EXTRA_CPPFLAGS
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Make the recipe that runs msgfmt less noisy.
* ab/makefile-msgfmt-wo-stats:
Makefile: don't invoke msgfmt with --statistics
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Debugging support for refs API.
* hn/refs-debug-update:
refs: centralize initialization of the base ref_store.
refs: print error message in debug output
refs: pass gitdir to packed_ref_store_create
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"git fetch" and "git pull" are now declared sparse-index clean.
Also "git ls-files" learns the "--sparse" option to help debugging.
* ds/fetch-pull-with-sparse-index:
test-read-cache: remove --table, --expand options
t1091/t3705: remove 'test-tool read-cache --table'
t1092: replace 'read-cache --table' with 'ls-files --sparse'
ls-files: add --sparse option
fetch/pull: use the sparse index
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Test updates.
* hn/ref-api-tests-update:
t7004: use "test-tool ref-store" for reflog inspection
t7004: create separate tags for different tests
t5550: require REFFILES
t5540: require REFFILES
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Remove a few commands from "git p4" that aren't very useful.
* jh/p4-remove-unused:
git-p4: remove "rollback" verb
git-p4: remove "debug" verb
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Perf tests were run with end-user's shell, but it has been
corrected to use the shell specified by $TEST_SHELL_PATH.
* ja/perf-use-specified-shell:
t/perf: do not run tests in user's $SHELL
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Debugging support for refs API.
* hn/test-ref-store-show-hash-algo:
test-ref-store: print hash algorithm
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Elijah Newren
Junio C Hamano
Victoria Dye
Randall S. Becker
Fabian Stelzer
Bagas Sanjaya
Taylor Blau