The merge-recursive and merge-ort machinery crashed in corner cases
when certain renames are involved.
* en/merge-process-renames-crash-fix:
merge-ort: fix slightly overzealous assertion for rename-to-self
t6423: add a testcase causing a failed assertion in process_renames
A handful of built-in command implementations have been rewritten
to use the repository instance supplied by git.c:run_builtin(), its
caller.
* ua/some-builtins-wo-the-repository:
builtin/checkout-index: stop using `the_repository`
builtin/for-each-ref: stop using `the_repository`
builtin/ls-files: stop using `the_repository`
builtin/pack-refs: stop using `the_repository`
builtin/send-pack: stop using `the_repository`
builtin/verify-commit: stop using `the_repository`
builtin/verify-tag: stop using `the_repository`
config: teach repo_config to allow `repo` to be NULL
The refname exclusion logic in the packed-ref backend has been
broken for some time, which confused upload-pack to advertise
different set of refs. This has been corrected.
* tb/refs-exclude-fixes:
refs.c: stop matching non-directory prefixes in exclude patterns
refs.c: remove empty '--exclude' patterns
"git fsck" becomes more careful when checking the refs.
* sj/ref-consistency-checks-more:
builtin/fsck: add `git refs verify` child process
packed-backend: check whether the "packed-refs" is sorted
packed-backend: add "packed-refs" entry consistency check
packed-backend: check whether the refname contains NUL characters
packed-backend: add "packed-refs" header consistency check
packed-backend: check if header starts with "# pack-refs with: "
packed-backend: check whether the "packed-refs" is regular file
builtin/refs: get worktrees without reading head information
t0602: use subshell to ensure working directory unchanged
"git version --build-options" stopped showing zlib version by
mistake due to recent refactoring, which has been corrected.
* tc/zlib-ng-fix:
help: print zlib-ng version number
help: include git-zlib.h to print zlib version
Commit bc26f7690a (clone: make it possible to specify --tags,
2025-02-06) added a new paragraph in the middle of this list item. By
adding an empty line rather than using a list continuation, we broke the
list continuation, with the new paragraph ending up funnily indented.
Restore the chain of list continuations.
Signed-off-by: Martin Ă…gren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
- Update for 2.49.0.
- Fix numerous typos found by spelling checker.
- Fix more straight quotes.
- Harmonize translation of "blob" (to "blob", not "blobb").
- Harmonize translation of "reflog" (to "referenslogg").
Signed-off-by: Peter Krefting <peter@softwolves.pp.se>
Remove the_repository global variable in favor of the repository
argument that gets passed in "builtin/checkout-index.c".
When `-h` is passed to the command outside a Git repository, the
`run_builtin()` will call the `cmd_checkout_index()` function with `repo`
set to NULL and then early in the function, `show_usage_with_options_if_asked()`
call will give the options help and exit.
Pass an instance of "struct index_state" available in the calling
context to both `checkout_all()` and `checkout_file()` to remove their
dependency on the global `the_repository` variable.
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Remove the_repository global variable in favor of the repository
argument that gets passed in "builtin/for-each-ref.c".
When `-h` is passed to the command outside a Git repository, the
`run_builtin()` will call the `cmd_for_each_ref()` function with `repo`
set to NULL and then early in the function, `parse_options()` call will
give the options help and exit.
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Remove the_repository global variable in favor of the repository
argument that gets passed in "builtin/ls-files.c".
When `-h` is passed to the command outside a Git repository, the
`run_builtin()` will call the `cmd_ls_files()` function with `repo` set
to NULL and then early in the function, `show_usage_with_options_if_asked()`
call will give the options help and exit.
Pass the repository available in the calling context to both
`expand_objectsize()` and `show_ru_info()` to remove their
dependency on the global `the_repository` variable.
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Remove the_repository global variable in favor of the repository
argument that gets passed in "builtin/pack-refs.c".
When `-h` is passed to the command outside a Git repository, the
`run_builtin()` will call the `cmd_pack_refs()` function with `repo` set
to NULL and then early in the function, `parse_options()` call will give
the options help and exit.
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Remove the_repository global variable in favor of the repository
argument that gets passed in "builtin/send-pack.c".
When `-h` is passed to the command outside a Git repository, the
`run_builtin()` will call the `cmd_send_pack()` function with `repo` set
to NULL and then early in the function, `parse_options()` call will give
the options help and exit.
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Remove the_repository global variable in favor of the repository
argument that gets passed in "builtin/verify-commit.c".
When `-h` is passed to the command outside a Git repository, the
`run_builtin()` will call the `cmd_verify_commit()` function with `repo`
set to NULL and then early in the function, `parse_options()` call will
give the options help and exit.
Pass the repository available in the calling context to `verify_commit()`
to remove it's dependency on the global `the_repository` variable.
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Remove the_repository global variable in favor of the repository
argument that gets passed in "builtin/verify-tag.c".
When `-h` is passed to the command outside a Git repository, the
`run_builtin()` will call the `cmd_verify_tag()` function with `repo` set
to NULL and then early in the function, `parse_options()` call will give
the options help and exit.
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The `repo` value can be NULL if a builtin command is run outside
any repository. The current implementation of `repo_config()` will
fail if `repo` is NULL.
If the `repo` is NULL the `repo_config()` can ignore the repository
configuration but it should read the other configuration sources like
the system-side configuration instead of failing.
Teach the `repo_config()` to allow `repo` to be NULL by calling the
`read_very_early_config()` which read config but only enumerate system
and global settings.
This will be useful in the following commits.
Suggested-by: Junio C Hamano <gitster@pobox.com>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In 3f763ddf28 (fetch: set remote/HEAD if it does not exist, 2024-11-22),
unconditionally adds "HEAD" to the list of ref prefixes we send to the
server.
This breaks a core assumption that the list of prefixes we send to the
server is complete. We must either send all prefixes we care about, or
none at all (in the latter case the server then advertises everything).
The tag following code is careful to only add "refs/tags/" to the list
of prefixes if there are already entries in the prefix list. But because
the new code from 3f763ddf28 runs after the tag code, and because it
unconditionally adds to the prefix list, we may end up with a prefix
list that _should_ have "refs/tags/" in it, but doesn't.
When that is the case, the server does not advertise any tags, and our
auto-following breaks because we never learned about any tags in the
first place.
Fix this by only adding "HEAD" to the ref prefixes when we know that we
are already limiting the advertisement. In either case we'll learn about
HEAD (either through the limited advertisement, or implicitly through a
full advertisement).
Reported-by: Igor Todorovski <itodorov@ca.ibm.com>
Co-authored-by: Jeff King <peff@peff.net>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When building against zlib-ng, the header file `zlib.h` is not included,
but `zlib-ng.h` is included instead. It's `zlib.h` that defines
`ZLIB_VERSION` and that macro is used to print out zlib version in
`git-version(1)` with `--build-options`. But when it's not defined, no
version is printed.
`zlib-ng.h` defines another macro: `ZLIBNG_VERSION`. Use that macro to
print the zlib-ng version in `git version --build-options` when it's
set. Otherwise fallback to `ZLIB_VERSION`.
Signed-off-by: Toon Claes <toon@iotcl.com>
Helped-by: Patrick Steinhardt <ps@pks.im>
Reviewed-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In 41f1a8435a (git-compat-util: move include of "compat/zlib.h" into
"git-zlib.h", 2025-01-28) some code was refactored to enable easier
linking against zlib-ng.
This removed `zlib.h` being indirectly included in `help.c`. As this
file uses `ZLIB_VERSION` to print the version number of zlib when
running git-version(1) with `--build-options`, this resulted in a
regression.
Include `git-zlib.h` directly into `help.c` to print zlib version
information. This brings back the zlib version in the output of
`git version --build-options`.
Signed-off-by: Toon Claes <toon@iotcl.com>
Reviewed-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Hotfix to help building Git-for-Windows.
* js/win-2.49-build-fixes:
cmake: generalize the handling of the `CLAR_TEST_OBJS` list
meson: fix sorting
ident: stop assuming that `gw_gecos` is writable
Some future breaking changes would remove certain parts of the
default repository, which were still described even when the
documents were built for the future with WITH_BREAKING_CHANGES.
* pw/repo-layout-doc-update:
docs: fix repository-layout when building with breaking changes
merge-ort has a number of sanity checks on the file it is processing in
process_renames(). One of these sanity checks was slightly overzealous
because it indirectly assumed that a renamed file always ended up at a
different path than where it started. That is normally an entirely fair
assumption, but directory rename detection can make things interesting.
As a quick refresher, if one side of history renames directory A/ -> B/,
and the other side of history adds new files to A/, then directory
rename detection notices and suggests moving those new files to B/. A
similar thing is done for paths renamed into A/, causing them to be
transitively renamed into B/. But, if the file originally came from B/,
then this can end up causing a file to be renamed back to itself.
It turns out the rest of the code following this assertion handled the
case fine; the assertion was just an extra sanity check, not a rigid
precondition. Therefore, simply adjust the assertion to pass under this
special case as well.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If one side of history renames a directory A/ -> B/, and the other side
of history adds new files to A/, then directory rename detection notices
and moves or suggests moving those new files to B/. A similar thing is
done for paths renamed into A/, causing them to be transitively renamed
into B/. But, if the file originally came from B/, then this can end up
causing a file to be renamed back to itself. merge-ort crashes under
this special case, due to a slightly overzealous assertion:
git: merge-ort.c:3051: process_renames: Assertion `source_deleted || oldinfo->filemask & old_sidemask' failed.
Aborted (core dumped)
Add a testcase demonstrating this.
Signed-off-by: Dmitry Goncharov <dgoncharov@users.sf.net>
[en: Instead of adding a new testsuite, place it near similar tests in
t6423, adjusting to match the style of those tests. Tweak the commit
message to not repeat the entire testcase, but just describe the bug.
Also update the line number in the error message.]
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In the packed-refs backend, our implementation of '--exclude' (dating
back to 59c35fac54 (refs/packed-backend.c: implement jump lists to avoid
excluded pattern(s), 2023-07-10)) considers, for example:
$ git for-each-ref --exclude=refs/heads/ba
to exclude "refs/heads/bar", "refs/heads/baz", and so on.
The files backend, which does not implement '--exclude' (and relies on
the caller to cull out results that don't match) naturally will
enumerate "refs/heads/bar" and so on.
So in the above example, 'for-each-ref' will try and see if
"refs/heads/ba" matches "refs/heads/bar" (since the files backend simply
enumerated every loose reference), and, realizing that it does not
match, output the reference as expected. (A caller that did want to
exclude "refs/heads/bar" and "refs/heads/baz" might instead run "git
for-each-ref --exclude='refs/heads/ba*'").
This can lead to strange behavior, like seeing a different set of
references advertised via 'upload-pack' depending on what set of
references were loose versus packed.
So there is a subtle bug with '--exclude' which is that in the
packed-refs backend we will consider "refs/heads/bar" to be a pattern
match against "refs/heads/ba" when we shouldn't. Likewise, the reftable
backend (which in this case is bug-compatible with the packed backend)
exhibits the same broken behavior.
There are a few ways to fix this. One is to tighten the rules in
cmp_record_to_refname(), which is used to determine the start/end-points
of the jump list used by the packed backend. In this new "strict" mode,
the comparison function would handle the case where we've reached the
end of the pattern by introducing a new check like so:
while (1) {
if (*r1 == '\n')
return *r2 ? -1 : 0;
if (!*r2)
if (strict && *r1 != '/') /* <- here */
return 1;
return start ? 1 : -1;
if (*r1 != *r2)
return (unsigned char)*r1 < (unsigned char)*r2 ? -1 : +1;
r1++;
r2++;
}
(eliding out the rest of cmp_record_to_refname()). Equivalently, we
could teach refs/packed-backend::populate_excluded_jump_list() to append
a trailing '/' if one does not already exist, forcing an exclude pattern
like "refs/heads/ba" to only match "refs/heads/ba/abc" and so forth.
But since the same problem exists in reftable, we can fix both at once
by performing this pre-processing step one layer up in refs.c at the
common entrypoint for the two, which is 'refs_ref_iterator_begin()'.
Since that solution is both the simplest and only requires modification
in one spot, let's normalize exclude patterns so that they end with a
trailing slash. This causes us to unify the behavior between all three
backends.
There is some minor test fallout in the "overlapping excluded regions"
test, which happens to use 'refs/ba' as an exclude pattern, and expects
references under the "refs/heads/bar/*" and "refs/heads/baz/*"
hierarchies to be excluded from the results.
But that test fallout is expected, because the test was codifying the
buggy behavior to begin with, and should have never been written that
way. Split that into its own test (since the range is no longer
overlapping under the stricter interpretation of --exclude patterns
presented here). Create a new test which does have overlapping
regions by using a refs/heads/bar/4/... hierarchy and excluding both
"refs/heads/bar" and "refs/heads/bar/4".
Reported-by: SURA <surak8806@gmail.com>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In 59c35fac54 (refs/packed-backend.c: implement jump lists to avoid
excluded pattern(s), 2023-07-10), the packed-refs backend learned how to
construct "jump lists" to avoid enumerating sections of the packed-refs
file that we know the caller is going to throw out anyway.
This process works by finding the start- and end-points (that is, where
in the packed-refs file corresponds to the range we're going to ignore)
for each exclude pattern, then constructing a jump list based on that.
At enumeration time we'll consult the jump list to skip past everything
in the range(s) found in the previous step, saving time when excluding a
large portion of references.
But when there is a --exclude pattern which is just the empty string,
the behavior is a little funky. When we try and exclude the empty
string, the matched range covers the entire packed-refs file, meaning
that we won't output any packed references. But the empty pattern
doesn't actually match any references to begin with! For example, on my
copy of git.git I can do:
$ git for-each-ref '' | wc -l
0
So "git for-each-ref --exclude=''" shouldn't actually remove anything
from the output, and ought to be equivalent to "git for-each-ref". But
it's not, and in fact:
$ git for-each-ref | wc -l
2229
$ git for-each-ref --exclude='' | wc -l
480
But why does the '--exclude' version output only some of the references
in the repository? Here's a hint:
$ find .git/refs -type f | wc -l
480
Indeed, because the files backend doesn't implement[^1] the same jump
list concept as the packed backend we get the correct result for the
loose references, but none of the packed references.
Since the empty string exclude pattern doesn't match anything, we can
discard them before the packed-refs backend has a chance to even see it
(and likewise for reftable, which also implements a similar concept
since 1869525066 (refs/reftable: wire up support for exclude patterns,
2024-09-16)).
This approach (copying only some of the patterns into a strvec at the
refs.c layer) may seem heavy-handed, but it's setting us up to fix
another bug in the following commit where the fix will involve modifying
the incoming patterns.
[^1]: As noted in 59c35fac54. We technically could avoid opening and
enumerating the contents of, for e.g., "$GIT_DIR/refs/heads/foo/" if
we knew that we were excluding anything under the 'refs/heads/foo'
hierarchy. But the --exclude stuff is all best-effort anyway, since
the caller is expected to cull out any results that they don't want.
Noticed-by: Jeff King <peff@peff.net>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano