This reverts commit f406b89552,
reversing changes made to 1627809eef.
It seems to have caused a few regressions, two of the three known
ones we have proposed solutions for. Let's give ourselves a bit
more room to maneuver during the pre-release freeze period and
restart once the 2.53 ships.
The logic that avoids reusing MIDX files with a wrong checksum was
broken, which has been corrected.
* tb/midx-write-corrupt-checksum-fix:
midx-write.c: assume checksum-invalid MIDXs require an update
t/t5319-multi-pack-index.sh: drop early 'test_done'
"git repack --geometric" did not work with promisor packs, which
has been corrected.
* ps/geometric-repacking-with-promisor-remotes:
builtin/repack: handle promisor packs with geometric repacking
repack-promisor: extract function to remove redundant packs
repack-promisor: extract function to finalize repacking
repack-geometry: extract function to compute repacking split
builtin/pack-objects: exclude promisor objects with "--stdin-packs"
Import newer version of "clar", unit testing framework.
* ps/clar-integers:
gitattributes: disable blank-at-eof errors for clar test expectations
t/unit-tests: demonstrate use of integer comparison assertions
t/unit-tests: update clar to 39f11fe
Improve the error message when a bad argument is given to the
`--onto` option of "git replay". Test coverage of "git replay" has
been improved.
* kh/replay-invalid-onto-advance:
t3650: add more regression tests for failure conditions
replay: die if we cannot parse object
replay: improve code comment and die message
replay: die descriptively when invalid commit-ish is given
replay: find *onto only after testing for ref name
replay: remove dead code and rearrange
Miscellaneous fixes on object database layer.
* ps/odb-misc-fixes:
odb: properly close sources before freeing them
builtin/gc: fix condition for whether to write commit graphs
Further preparation to upstream symbolic link support on Windows.
* js/prep-symlink-windows:
trim_last_path_component(): avoid hard-coding the directory separator
strbuf_readlink(): support link targets that exceed 2*PATH_MAX
strbuf_readlink(): avoid calling `readlink()` twice in corner-cases
init: do parse _all_ core.* settings early
mingw: do resolve symlinks in `getcwd()`
The object-info API has been cleaned up.
* ps/read-object-info-improvements:
packfile: drop repository parameter from `packed_object_info()`
packfile: skip unpacking object header for disk size requests
packfile: disentangle return value of `packed_object_info()`
packfile: always populate pack-specific info when reading object info
packfile: extend `is_delta` field to allow for "unknown" state
packfile: always declare object info to be OI_PACKED
object-file: always set OI_LOOSE when reading object info
The packfile_store data structure is moved from object store to odb
source.
* ps/packfile-store-in-odb-source:
packfile: move MIDX into packfile store
packfile: refactor `find_pack_entry()` to work on the packfile store
packfile: inline `find_kept_pack_entry()`
packfile: only prepare owning store in `packfile_store_prepare()`
packfile: only prepare owning store in `packfile_store_get_packs()`
packfile: move packfile store into object source
packfile: refactor misleading code when unusing pack windows
packfile: refactor kept-pack cache to work with packfile stores
packfile: pass source to `prepare_pack()`
packfile: create store via its owning source
When performing a fetch with an object filter, we mark the resulting
packfile as a promisor pack. An object part of such a pack may miss any
of its referenced objects, and Git knows to handle this case by fetching
any such missing objects from the promisor remote.
The "promisor" property needs to be retained going forward. So every
time we pack a promisor object, the resulting pack must be marked as a
promisor pack. git-repack(1) does this already: when a repository has a
promisor remote, it knows to pass "--exclude-promisor-objects" to the
git-pack-objects(1) child process. Promisor packs are written separately
when doing an all-into-one repack via `repack_promisor_objects()`.
But we don't support promisor objects when doing a geometric repack yet.
Promisor packs do not get any special treatment there, as we simply
merge promisor and non-promisor packs. The resulting pack is not even
marked as a promisor pack, which essentially corrupts the repository.
This corruption couldn't happen in the real world though: we pass both
"--exclude-promisor-objects" and "--stdin-packs" to git-pack-objects(1)
if a repository has a promisor remote, but as those options are mutually
exclusive we always end up dying. And while we made those flags
compatible with one another in a preceding commit, we still end up dying
in case git-pack-objects(1) is asked to repack a promisor pack.
There's multiple ways to fix this:
- We can exclude promisor packs from the geometric progression
altogether. This would have the consequence that we never repack
promisor packs at all. But in a partial clone it is quite likely
that the user generates a bunch of promisor packs over time, as
every backfill fetch would create another one. So this doesn't
really feel like a sensible option.
- We can adapt git-pack-objects(1) to support repacking promisor packs
and include them in the normal geometric progression. But this would
mean that the set of promisor objects expands over time as the packs
are merged with normal packs.
- We can use a separate geometric progression to repack promisor
packs.
The first two options both have significant downsides, so they aren't
really feasible. But the third option fixes both of these downsides: we
make sure that promisor packs get merged, and at the same time we never
expand the set of promisor objects beyond the set of objects that are
already marked as promisor objects.
Implement this strategy so that geometric repacking works in partial
clones.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We're about to add a second caller that wants to remove redundant packs
after a geometric repack. Split out the function which does this to
prepare for that.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We're about to add a second caller that wants to finalize repacking of
promisor objects. Split out the function which does this to prepare for
that.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We're about to add a second caller that wants to compute the repacking
split for a set of packfiles. Split out the function that computes this
split to prepare for that.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It is currently not possible to combine "--exclude-promisor-objects"
with "--stdin-packs" because both flags want to set up a revision walk
to enumerate the objects to pack. In a subsequent commit though we want
to extend geometric repacks to support promisor objects, and for that we
need to handle the combination of both flags.
There are two cases we have to think about here:
- "--stdin-packs" asks us to pack exactly the objects part of the
specified packfiles. It is somewhat questionable what to do in the
case where the user asks us to exclude promisor objects, but at the
same time explicitly passes a promisor pack to us. For now, we
simply abort the request as it is self-contradicting. As we have
also been dying before this commit there is no regression here.
- "--stdin-packs=follow" does the same as the first flag, but it also
asks us to include all objects transitively reachable from any
object in the packs we are about to repack. This is done by doing
the revision walk mentioned further up. Luckily, fixing this case is
trivial: we only need to modify the revision walk to also set the
`exclude_promisor_objects` field.
Note that we do not support the "--exclude-promisor-objects-best-effort"
flag for now as we don't need it to support geometric repacking with
promisor objects.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Some error messages from the http transport layer lacked the
terminating newline, which has been corrected.
* kt/http-backend-errors:
http-backend: write newlines to stderr when responding with errors
Update code paths that check data integrity around refs subsystem.
* ps/ref-consistency-checks:
builtin/fsck: drop `fsck_head_link()`
builtin/fsck: move generic HEAD check into `refs_fsck()`
builtin/fsck: move generic object ID checks into `refs_fsck()`
refs/reftable: introduce generic checks for refs
refs/reftable: fix consistency checks with worktrees
refs/reftable: extract function to retrieve backend for worktree
refs/reftable: adapt includes to become consistent
refs/files: introduce function to perform normal ref checks
refs/files: extract generic symref target checks
fsck: drop unused fields from `struct fsck_ref_report`
refs/files: perform consistency checks for root refs
refs/files: improve error handling when verifying symrefs
refs/files: extract function to check single ref
refs/files: remove useless indirection
refs/files: remove `refs_check_dir` parameter
refs/files: move fsck functions into global scope
refs/files: simplify iterating through root refs
The iconv library on macOS fails to correctly handle stateful
ISO/IEC 2022 encoded strings. Work it around instead of replacing
it wholesale from homebrew.
* tb/macos-iconv-workarounds:
utf8.c: enable workaround for iconv under macOS 14/15
utf8.c: prepare workaround for iconv under macOS 14/15
The split command in "git subtree" (in contrib/) has been taught to
deal better with rebased history.
* cs/rebased-subtree-split:
contrib/subtree: detect rewritten subtree commits
In 6ce9d558ce (midx-write: skip rewriting MIDX with `--stdin-packs`
unless needed, 2025-12-10), the MIDX machinery learned how to optimize
out unnecessary writes with "--stdin-packs".
In order to do this, it compares the contents of the in-progress write
against a MIDX loaded directly from the object store. We load a separate
MIDX (as opposed to checking our update relative to "ctx.m") because the
MIDX code does not reuse an existing MIDX with --stdin-packs, and always
leaves "ctx.m" as NULL. See commit 0c5a62f14b (midx-write.c: do not
read existing MIDX with `packs_to_include`, 2024-06-11) for details on
why.
If "ctx.m" is non-NULL, however, it is guaranteed to be checksum-valid,
since we only assign "ctx.m" when "midx_checksum_valid()" returns true.
Since the same guard does not exist for the MIDX we pass to
"midx_needs_update()", we may ignore on-disk corruption when determining
whether or not we can optimize out the write.
Add a similar guard within "midx_needs_update()" to prevent such an
issue.
A more robust fix would involve revising 0c5a62f14b and teaching the
MIDX generation code how to reuse an existing MIDX even when invoked
with "--stdin-packs", such that we could avoid side-loading the MIDX
directly from the object store in order to call "midx_needs_update()".
For now, pursue the minimal fix.
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In 6ce9d558ce (midx-write: skip rewriting MIDX with `--stdin-packs`
unless needed, 2025-12-10), an extra 'test_done' was added, causing the
test script to finish before having run all of its tests.
Dropping this extraneous 'test_done' exposes a bug from commit
6ce9d558ce that causes a subsequent test to fail. Mark that test with a
'test_expect_failure' for now, and the subsequent commit will explain
and fix the bug.
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* ps/repack-avoid-noop-midx-rewrite:
midx-write: skip rewriting MIDX with `--stdin-packs` unless needed
midx-write: extract function to test whether MIDX needs updating
midx: fix `BUG()` when getting preferred pack without a reverse index
The previous commit introduced a workaround in utf8.c to deal
with broken iconv implementations.
It is enabled when a MacOS version is used that has a buggy
iconv library and there is no external library provided
(and linked against) from neither MacPorts nor Homebrew nor Fink.
For Homebrew, MacPorts and Fink we check if libiconv exist.
Introduce 2 new macros: HAS_GOOD_LIBICONV and NEEDS_GOOD_LIBICONV.
For Homebrew HAS_GOOD_LIBICONV is set when the libiconv directory
exist.
MacPorts can be installed with or without libiconv, so check if
libiconv.dylib exists (which is a softlink)
Fink compiles and installs libiconv by default.
Note that a fresh installation of Fink now defaults to /opt/sw.
Older versions used /sw as default, so leave the check and setting
of BASIC_CFLAGS and BASIC_LDFLAGS as is.
For the new default check for the existance of /opt/sw as well.
Add a check for /opt/sw/lib/libiconv.dylib which sets HAS_GOOD_LIBICONV
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
MacOS14 (Sonoma) has started to ship an iconv library with bugs.
The same bugs exists even in MacOS 15 (Sequoia)
A bug report running the Git test suite says:
three tests of t3900 fail on macOS 26.1 for me:
not ok 17 - ISO-2022-JP should be shown in UTF-8 now
not ok 25 - ISO-2022-JP should be shown in UTF-8 now
not ok 38 - commit --fixup into ISO-2022-JP from UTF-8
Here's the verbose output of the first one:
=================
expecting success of 3900.17 'ISO-2022-JP should be shown in UTF-8 now':
compare_with ISO-2022-JP "$TEST_DIRECTORY"/t3900/2-UTF-8.txt
--- /Users/x/src/git/t/t3900/2-UTF-8.txt 2024-10-01 19:43:24.605230684 +0000
+++ current 2025-12-08 21:52:45.786161909 +0000
@@ -1,5 +1,5 @@
はれひほふ
しているのが、いるので。
-濱浜ほれぷりぽれまびぐりろへ。
+濱浜ほれぷりぽれまび$0$j$m$X!#
not ok 17 - ISO-2022-JP should be shown in UTF-8 now
1..17
=================
compare_with runs git show to display a commit message, which in this
case here was encoded using ISO-2022-JP and is supposed to be reencoded
to UTF-8, but git show only does that half-way -- the "$0$j$m$X!#" part
is from the original ISO-2022-JP representation.
That botched conversion is done by utf8.c::reencode_string_iconv(). It
calls iconv(3) to do the actual work, initially with an output buffer of
the same size as the input. If the output needs more space the function
enlarges the buffer and calls iconv(3) again.
iconv(3) won't tell us how much space it needs, but it will report what
part it already managed to convert, so we can increase the buffer and
continue from there. ISO-2022-JP has escape codes for switching between
character sets, so it's a stateful encoding. I guess the iconv(3) on my
machine forgets the state at the end of part one and then messes up part
two.
[end of citation]
Working around the buggy iconv shipped with the OS can be done in
two ways:
a) Link Git against a different version of iconv
b) Improve the handling when iconv needs a larger output buffer
a) is already done by default when either Fink [1] or MacPorts [2]
or Homebrew [3] is installed.
b) is implemented here, in case that no fixed iconv is available:
When the output buffer is too short, increase it (as before)
and start from scratch (this is new).
This workound needs to be enabled with
'#define ICONV_RESTART_RESET'
and a makefile knob will be added in the next commit
Suggested-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
[1] https://www.finkproject.org/
[2] https://www.macports.org/
[3] https://brew.sh/
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The function `fsck_head_link()` was historically used to perform a
couple of consistency checks for refs. (Almost) all of these checks have
now been moved into the refs subsystem. There's only a single check
remaining that verifies whether `refs_resolve_ref_unsafe()` returns a
`NULL` pointer. This may happen in a couple of cases:
- When `refs_is_safe()` declares the ref to be unsafe. We already have
checks for this as we verify refnames with `check_refname_format()`.
- When the ref doesn't exist. A repository without "HEAD" is
completely broken though, and we would notice this error ahead of
time already.
- In case the caller passes `RESOLVE_REF_READING` and the ref is a
symref that doesn't resolve. We don't pass this flag though.
As such, this check doesn't cover anything anymore that isn't already
covered by `refs_fsck()`. Drop it, which also allows us to inline the
call to `refs_resolve_ref_unsafe()`.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move the check that detects "HEAD" refs that do not point at a branch
into `refs_fsck()`. This follows the same motivation as the preceding
commit.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While most of the logic that verifies the consistency of refs is
driven by `refs_fsck()`, we still have a small handful of checks in
`fsck_head_link()`. These checks don't use the git-fsck(1) reporting
infrastructure, and as such it's impossible to for example disable
some of those checks.
One such check detects refs that point to the all-zeroes object ID.
Extract this check into the generic `refs_fsck_ref()` function that is
used by both the "files" and "reftable" backends.
Note that this will cause us to not return an error code from
`fsck_head_link()` anymore in case this error was detected. This is fine
though: the only caller of this function does not check the error code
anyway. To demonstrate this, adapt the function to drop its return value
altogether. The function will be removed in a subsequent commit anyway.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In a preceding commit we have extracted generic checks for both direct
and symbolic refs that apply for all backends. Wire up those checks for
the "reftable" backend.
Note that this is done by iterating through all refs manually with the
low-level reftable ref iterator. We explicitly don't want to use the
higher-level iterator that is exposed to users of the reftable backend
as that iterator may swallow for example broken refs.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The ref consistency checks are driven via `cmd_refs_verify()`. That
function loops through all worktrees (including the main worktree) and
then checks the ref store for each of them individually. It follows that
the backend is expected to only verify refs that belong to the specified
worktree.
While the "files" backend handles this correctly, the "reftable" backend
doesn't. In fact, it completely ignores the passed worktree and instead
verifies refs of _all_ worktrees. The consequence is that we'll end up
every ref store N times, where N is the number of worktrees.
Or rather, that would be the case if we actually iterated through the
worktree reftable stacks correctly. But we use `strmap_for_each_entry()`
to iterate through the stacks, but the map is in fact not even properly
populated. So instead of checking stacks N^2 times, we actually only end
up checking the reftable stack of the main worktree.
Fix this bug by only verifying the stack of the passed-in worktree and
constructing the backends via `backend_for_worktree()`.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Pull out the logic to retrieve a backend for a given worktree. This
function will be used in a subsequent commit.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Adapt the includes to be sorted and to use include paths that are
relative to the "refs/" directory.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In a subsequent commit we'll introduce new generic checks for direct
refs. These checks will be independent of the actual backend.
Introduce a new function `refs_fsck_ref()` that will be used for this
purpose. At the current point in time it's still empty, but it will get
populated in a subsequent commit.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The consistency checks for the "files" backend contain a couple of
verifications for symrefs that verify generic properties of the target
reference. These properties need to hold for every backend, no matter
whether it's using the "files" or "reftable" backend.
Reimplementing these checks for every single backend doesn't really make
sense. Extract it into a generic `refs_fsck_symref()` function that can
be used by other backends, as well. The "reftable" backend will be wired
up in a subsequent commit.
While at it, improve the consistency checks so that we don't complain
about refs pointing to a non-ref target in case the target refname
format does not verify. Otherwise it's very likely that we'll generate
both error messages, which feels somewhat redundant in this case.
Note that the function has a couple of `UNUSED` parameters. These will
become referenced in a subsequent commit.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The `struct fsck_ref_report` has a couple fields that are intended to
improve the error reporting for broken ref reports by showing which
object ID or target reference the ref points to. These fields are never
set though and are thus essentially unused.
Remove them.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While the "files" backend already knows to perform consistency checks
for the "refs/" hierarchy, it doesn't verify any of its root refs. Plug
this omission.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The error handling when verifying symbolic refs is a bit on the wild
side:
- `fsck_report_ref()` can be told to ignore specific errors. If an
error has been ignored and a previous check raised an unignored
error, then assigning `ret = fsck_report_ref()` will cause us to
swallow the previous error.
- When the target reference is not valid we bail out early without
checking for other errors.
Fix both of these issues by consistently or'ing the return value and not
bailing out early.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When checking the consistency of references we create a directory
iterator and then verify each single reference in a loop. The logic to
perform the actual checks is embedded into that loop, which makes it
hard to reuse. But In a subsequent commit we're about to introduce a
second path that wants to verify references.
Prepare for this by extracting the logic to check a single reference
into a standalone function.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The function `files_fsck_refs()` only has a single callsite and forwards
all of its arguments as-is, so it's basically a useless indirection.
Inline the function call.
While at it, also remove the bitwise or that we have for return values.
We don't really want to or them at all, but rather just want to return
an error in case either of the functions has failed.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The parameter `refs_check_dir` determines which directory we want to
check references for. But as we always want to check the complete
refs hierarchy, this parameter is always set to "refs".
Drop the parameter and hardcode it.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When performing consistency checks we pass the functions that perform
the verification down the calling stack. This is somewhat unnecessary
though, as the set of functions doesn't ever change.
Simplify the code by moving the array into global scope and remove the
parameter.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When iterating through root refs we first need to determine the
directory in which the refs live. This is done by retrieving the root of
the loose refs via `refs->loose->root->name`, and putting it through
`files_ref_path()` to derive the final path.
This is somewhat redundant though: the root name of the loose files
cache is always going to be the empty string. As such, we always end up
passing that empty string to `files_ref_path()` as the ref hierarchy we
want to start. And this actually makes sense: `files_ref_path()` already
computes the location of the root directory, so of course we need to
pass the empty string for the ref hierarchy itself. So going via the
loose ref cache to figure out that the root of a ref hierarchy is empty
is only causing confusion.
But next to the added confusion, it can also lead to a segfault. The
loose ref cache is populated lazily, so it may not always be set. It
seems to be sheer luck that this is a condition we do not currently hit.
The right thing to do would be to call `get_loose_ref_cache()`, which
knows to populate the cache if required.
Simplify the code and fix the potential segfault by simply removing the
indirection via the loose ref cache completely.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The function `packed_object_info()` takes a packfile and offset and
returns the object info for the corresponding object. Despite these two
parameters though it also takes a repository pointer. This is redundant
information though, as `struct packed_git` already has a repository
pointer that is always populated.
Drop the redundant parameter.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While most of the object info requests for a packed object require us to
unpack its headers, reading its disk size doesn't. We still unpack the
object header in that case though, which is unnecessary work.
Skip reading the header if only the disk size is requested. This leads
to a small speedup when reading disk size, only. The following benchmark
was done in the Git repository:
Benchmark 1: ./git rev-list --disk-usage HEAD (rev = HEAD~)
Time (mean ± σ): 105.2 ms ± 0.6 ms [User: 91.4 ms, System: 13.3 ms]
Range (min … max): 103.7 ms … 106.0 ms 27 runs
Benchmark 2: ./git rev-list --disk-usage HEAD (rev = HEAD)
Time (mean ± σ): 96.7 ms ± 0.4 ms [User: 86.2 ms, System: 10.0 ms]
Range (min … max): 96.2 ms … 98.1 ms 30 runs
Summary
./git rev-list --disk-usage HEAD (rev = HEAD) ran
1.09 ± 0.01 times faster than ./git rev-list --disk-usage HEAD (rev = HEAD~)
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The `packed_object_info()` function returns the type of the packed
object. While we use an `enum object_type` to store the return value,
this type is not to be confused with the actual object type. It _may_
contain the object type, but it may just as well encode that the given
packed object is stored as a delta.
We have removed the only caller that relied on this returned object type
in the preceding commit, so let's simplify semantics and return either 0
on success or a negative error code otherwise.
This unblocks a small optimization where we can skip reading the object
type altogether.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When reading object information via `packed_object_info()` we may not
populate the object info's packfile-specific fields. This leads to
inconsistent object info depending on whether the info was populated via
`packfile_store_read_object_info()` or `packed_object_info()`.
Fix this inconsistency so that we can always assume the pack info to be
populated when reading object info from a pack.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
