| Commit message (Collapse) | Author | Age | Files | Lines |
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Start working to make the codebase buildable with -Wsign-compare.
* ps/build-sign-compare:
t/helper: don't depend on implicit wraparound
scalar: address -Wsign-compare warnings
builtin/patch-id: fix type of `get_one_patchid()`
builtin/blame: fix type of `length` variable when emitting object ID
gpg-interface: address -Wsign-comparison warnings
daemon: fix type of `max_connections`
daemon: fix loops that have mismatching integer types
global: trivial conversions to fix `-Wsign-compare` warnings
pkt-line: fix -Wsign-compare warning on 32 bit platform
csum-file: fix -Wsign-compare warning on 32-bit platform
diff.h: fix index used to loop through unsigned integer
config.mak.dev: drop `-Wno-sign-compare`
global: mark code units that generate warnings with `-Wsign-compare`
compat/win32: fix -Wsign-compare warning in "wWinMain()"
compat/regex: explicitly ignore "-Wsign-compare" warnings
git-compat-util: introduce macros to disable "-Wsign-compare" warnings
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Mark code units that generate warnings with `-Wsign-compare`. This
allows for a structured approach to get rid of all such warnings over
time in a way that can be easily measured.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The variables `packed_git_window_size` and `packed_git_limit` are global
config variables used in the `packfile.c` file. Since it is only used in
this file, let's change it from being a global config variable to a
local variable for the subsystem.
With this, we rid `packfile.c` from all global variable usage and this
means we can also remove the `USE_THE_REPOSITORY_VARIABLE` guard from
the file.
Helped-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The `delta_base_cache_limit` variable is a global config variable used
by multiple subsystems. Let's make this non-global, by adding this
variable independently to the subsystems where it is used.
First, add the setting to the `repo_settings` struct, this provides
access to the config in places where the repository is available. Use
this in `packfile.c`.
In `index-pack.c` we add it to the `pack_idx_option` struct and its
constructor. While the repository struct is available here, it may not
be set because `git index-pack` can be used without a repository.
In `gc.c` add it to the `gc_config` struct and also the constructor
function. The gc functions currently do not have direct access to a
repository struct.
These changes are made to remove the usage of `delta_base_cache_limit`
as a global variable in `packfile.c`. This brings us one step closer to
removing the `USE_THE_REPOSITORY_VARIABLE` definition in `packfile.c`
which we complete in the next patch.
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The `include_by_branch()` function is responsible for evaluating whether
or not a specific include should be pulled in based on the currently
checked out branch. Naturally, his condition can only be evaluated when
we have a properly initialized repository with a ref store in the first
place. This is why the function guards against the case when either
`data->repo` or `data->repo->gitdir` are `NULL` pointers.
But the second check is insufficient: the `gitdir` may be set even
though the repository has not been initialized. Quoting "setup.c":
NEEDSWORK: currently we allow bogus GIT_DIR values to be set in some
code paths so we also need to explicitly setup the environment if the
user has set GIT_DIR. It may be beneficial to disallow bogus GIT_DIR
values at some point in the future.
So when either the GIT_DIR environment variable or the `--git-dir`
global option are set by the user then `the_repository` may end up with
an initialized `gitdir` variable. And this happens even when the dir is
invalid, like for example when it doesn't exist. It follows that only
checking for whether or not `gitdir` is `NULL` is not sufficient for us
to determine whether the repository has been properly initialized.
This issue can lead to us triggering a BUG: when using a config with an
"includeIf.onbranch:" condition outside of a repository while using the
`--git-dir` option pointing to an invalid Git directory we may end up
trying to evaluate the condition even though the ref storage format has
not been set up.
This bisects to 173761e21b (setup: start tracking ref storage format,
2023-12-29), but that commit really only starts to surface the issue
that has already existed beforehand. The code to check for `gitdir` was
introduced via 85fe0e800c (config: work around bug with
includeif:onbranch and early config, 2019-07-31), which tried to fix
similar issues when we didn't yet have a repository set up. But the fix
was incomplete as it missed the described scenario.
As the quoted comment mentions, we'd ideally refactor the code to not
set up `gitdir` with an invalid value in the first place, but that may
be a bigger undertaking. Instead, refactor the code to use the ref
storage format as an indicator of whether or not the ref store has been
set up to fix the bug.
Reported-by: Ronan Pigott <ronan@rjp.ie>
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Stop storing the "core.notesRef" config value globally. Instead,
retrieve the value in `default_notes_ref()`. The code is never called in
a hot loop anyway, so doing this on every invocation should be perfectly
fine.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Same as the preceding commits, storing the "core.warnAmbiguousRefs"
value globally is misdesigned as this setting may be set per repository.
Move the logic into the repo-settings subsystem. The usual pattern here
is that users are expected to call `prepare_repo_settings()` before they
access the settings themselves. This seems somewhat fragile though, as
it is easy to miss and leads to somewhat ugly code patterns at the call
sites.
Instead, introduce a new function that encapsulates this logic for us.
This also allows us to change how exactly the lazy initialization works
in the future, e.g. by only partially initializing values as requested
by the caller.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Same as the preceding commit, storing the "core.preferSymlinkRefs" value
globally is misdesigned as this setting may be set per repository.
There is only a single user of this value anyway, namely the "files"
backend. So let's just remove the global variable and read the value of
this setting when initializing the backend.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The value of "core.logAllRefUpdates" is being stored in the global
variable `log_all_ref_updates`. This design is somewhat aged nowadays,
where it is entirely possible to access multiple repositories in the
same process which all have different values for this setting. So using
a single global variable to track it is plain wrong.
Remove the global variable. Instead, we now provide a new function part
of the repo-settings subsystem that parses the value for a specific
repository. While that may require us to read the value multiple times,
we work around this by reading it once when the ref backends are set up
and caching the value there.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In "environment.h" we have quite a lot of functions and variables that
either explicitly or implicitly depend on `the_repository`.
The implicit set of stateful declarations includes for example variables
which get populated when parsing a repository's Git configuration. This
set of variables is broken by design, as their state often depends on
the last repository config that has been parsed. So they may or may not
represent the state of `the_repository`.
Fixing that is quite a big undertaking, and later patches in this series
will demonstrate a solution for a first small set of those variables. So
for now, let's guard these with `USE_THE_REPOSITORY_VARIABLE` so that
callers are aware of the implicit dependency.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The `read_early_config()` function can be used to read configuration
where a repository has not yet been set up. As such, it is optional
whether or not `the_repository` has already been initialized. If it was
initialized we use its commondir and gitdir. If not, the function will
try to detect the Git directories by itself and, if found, also parse
their config files.
This means that we implicitly rely on `the_repository`. Make this
dependency explicit by passing a `struct repository`. This allows us to
again drop the `USE_THE_REPOSITORY_VARIABLE` define in "config.c".
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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It's not clear what `read_early_config()` and `read_very_early_config()`
do differently compared to `repo_read_config()` from just looking at
their names. Document both of these in the header file to clarify their
intent.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The `get_git_common_dir()` function retrieves the path to the common
directory for `the_repository`. Make it accept a `struct repository`
such that it can work on arbitrary repositories and make it part of the
repository subsystem. This reduces our reliance on `the_repository` and
clarifies scope.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The `get_git_dir()` function retrieves the path to the Git directory for
`the_repository`. Make it accept a `struct repository` such that it can
work on arbitrary repositories and make it part of the repository
subsystem. This reduces our reliance on `the_repository` and clarifies
scope.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Maintenance tasks other than "gc" now properly go background when
"git maintenance" runs them.
* ps/maintenance-detach-fix:
run-command: fix detaching when running auto maintenance
builtin/maintenance: add a `--detach` flag
builtin/gc: add a `--detach` flag
builtin/gc: stop processing log file on signal
builtin/gc: fix leaking config values
builtin/gc: refactor to read config into structure
config: fix constness of out parameter for `git_config_get_expiry()`
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The type of the out parameter of `git_config_get_expiry()` is a pointer
to a constant string, which creates the impression that ownership of the
returned data wasn't transferred to the caller. This isn't true though
and thus quite misleading.
Adapt the parameter to be of type `char **` and adjust callers
accordingly. While at it, refactor `get_shared_index_expire_date()` to
drop the static `shared_index_expire` variable. It is only used in that
function, and furthermore we would only hit the code where we parse the
expiry date a single time because we already use a static `prepared`
variable to track whether we did parse it.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Use of API functions that implicitly depend on the_repository
object in the config subsystem has been rewritten to pass a
repository object through the callchain.
* ps/config-wo-the-repository:
config: hide functions using `the_repository` by default
global: prepare for hiding away repo-less config functions
config: don't depend on `the_repository` with branch conditions
config: don't have setters depend on `the_repository`
config: pass repo to functions that rename or copy sections
config: pass repo to `git_die_config()`
config: pass repo to `git_config_get_expiry_in_days()`
config: pass repo to `git_config_get_expiry()`
config: pass repo to `git_config_get_max_percent_split_change()`
config: pass repo to `git_config_get_split_index()`
config: pass repo to `git_config_get_index_threads()`
config: expose `repo_config_clear()`
config: introduce missing setters that take repo as parameter
path: hide functions using `the_repository` by default
path: stop relying on `the_repository` in `worktree_git_path()`
path: stop relying on `the_repository` when reporting garbage
hooks: remove implicit dependency on `the_repository`
editor: do not rely on `the_repository` for interactive edits
path: expose `do_git_common_path()` as `repo_common_pathv()`
path: expose `do_git_path()` as `repo_git_pathv()`
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The config subsystem provides a bunch of legacy functions that read or
set configuration for `the_repository`. The use of those functions is
discouraged, and it is easy to miss the implicit dependency on
`the_repository` that calls to those functions may cause.
Move all config-related functions that use `the_repository` into a block
that gets only conditionally compiled depending on whether or not the
macro has been defined. This also removes all dependencies on that
variable in "config.c", allowing us to remove the definition of said
preprocessor macro.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When computing branch "includeIf" conditions we use `the_repository` to
obtain the main ref store. We really shouldn't depend on this global
repository though, but should instead use the repository that is being
passed to us via `struct config_include_data`. Otherwise, when parsing
configuration of e.g. submodules, we may end up evaluating the condition
the via the wrong refdb.
Fix this.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Some of the setters that accept a `struct repository` still implicitly
rely on `the_repository` via `git_config_set_multivar_in_file()`. While
this function would typically use the caller-provided path, it knows to
fall back to using the configuration path indicated by `the_repository`.
Adapt those functions to instead use the caller-provided repository.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Refactor functions that rename or copy config sections to accept a
`struct repository` such that we can get rid of the implicit dependency
on `the_repository`. Rename the functions accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Refactor `git_die_config()` to accept a `struct repository` such that we
can get rid of the implicit dependency on `the_repository`. Rename the
function accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Refactor `git_config_get_expiry_in_days()` to accept a `struct
repository` such that we can get rid of the implicit dependency on
`the_repository`. Rename the function accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Refactor `git_config_get_expiry()` to accept a `struct repository` such
that we can get rid of the implicit dependency on `the_repository`.
Rename the function accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Refactor `git_config_get_max_percent_split_change()` to accept a `struct
repository` such that we can get rid of the implicit dependency on
`the_repository`. Rename the function accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Refactor `git_config_get_split_index()` to accept a `struct repository`
such that we can get rid of the implicit dependency on `the_repository`.
Rename the function accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Refactor `git_config_get_index_threads()` to accept a `struct
repository` such that we can get rid of the implicit dependency on
`the_repository`. Rename the function accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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While we already have `repo_config_clear()` as an alternative to
`git_config_clear()` that doesn't rely on `the_repository`, it is not
exposed to callers outside of the config subsystem. Do so.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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While we already provide some of the config-setting interfaces with a
`struct repository` as parameter, others only have a variant that
implicitly depends on `the_repository`. Fill in those gaps such that we
can start to deprecate the repo-less variants.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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More leak fixes.
* ps/leakfixes-part-4: (22 commits)
builtin/diff: free symmetric diff members
diff: free state populated via options
builtin/log: fix leak when showing converted blob contents
userdiff: fix leaking memory for configured diff drivers
builtin/format-patch: fix various trivial memory leaks
diff: fix leak when parsing invalid ignore regex option
unpack-trees: clear index when not propagating it
sequencer: release todo list on error paths
merge-ort: unconditionally release attributes index
builtin/fast-export: plug leaking tag names
builtin/fast-export: fix leaking diff options
builtin/fast-import: plug trivial memory leaks
builtin/notes: fix leaking `struct notes_tree` when merging notes
builtin/rebase: fix leaking `commit.gpgsign` value
config: fix leaking comment character config
submodule-config: fix leaking name entry when traversing submodules
read-cache: fix leaking hashfile when writing index fails
bulk-checkin: fix leaking state TODO
object-name: fix leaking symlink paths in object context
object-file: fix memory leak when reading corrupted headers
...
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When the comment line character has been specified multiple times in the
configuration, then `git_default_core_config()` will cause a memory leak
because it unconditionally copies the string into `comment_line_str`
without free'ing the previous value. In fact, it can't easily free the
value in the first place because it may contain a string constant.
Refactor the code such that we track allocated comment character strings
via a separate non-constant variable `comment_line_str_to_free`. Adapt
sites that set `comment_line_str` to set both and free the old value
that was stored in `comment_line_str_to_free`.
This memory leak is being hit in t3404. As there are still other memory
leaks in that file we cannot yet mark it as passing with leak checking
enabled.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git config --value=foo --fixed-value section.key newvalue" barfed
when the existing value in the configuration file used the
valueless true syntax, which has been corrected.
* tb/config-fixed-value-with-valueless-true:
config.c: avoid segfault with --fixed-value and valueless config
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When using `--fixed-value` with a key whose value is left empty (implied
as being "true"), 'git config' may crash when invoked like either of:
$ git config set --file=config --value=value --fixed-value \
section.key pattern
$ git config --file=config --fixed-value section.key value pattern
The original bugreport[1] bisects to 00bbdde141 (builtin/config:
introduce "set" subcommand, 2024-05-06), which is a red-herring, since
the original bugreport uses the new 'git config set' invocation.
The behavior likely bisects back to c90702a1f6 (config: plumb
--fixed-value into config API, 2020-11-25), which introduces the new
--fixed-value option in the first place.
Looking at the relevant frame from a failed process's coredump, the
crash appears in config.c::matches() like so:
(gdb) up
#1 0x000055b3e8b06022 in matches (key=0x55b3ea894360 "section.key", value=0x0,
store=0x7ffe99076eb0) at config.c:2884
2884 return !strcmp(store->fixed_value, value);
where we are trying to compare the `--fixed-value` argument to `value`,
which is NULL.
Avoid attempting to match `--fixed-value` for configuration keys with no
explicit value. A future patch could consider the empty value to mean
"true", "yes", "on", etc. when invoked with `--type=bool`, but let's
punt on that for now in the name of avoiding the segfault.
[1]: https://lore.kernel.org/git/CANrWfmTek1xErBLrnoyhHN+gWU+rw14y6SQ+abZyzGoaBjmiKA@mail.gmail.com/
Reported-by: Han Jiang <jhcarl0814@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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More memory leaks have been plugged.
* ps/leakfixes-more: (29 commits)
builtin/blame: fix leaking ignore revs files
builtin/blame: fix leaking prefixed paths
blame: fix leaking data for blame scoreboards
line-range: plug leaking find functions
merge: fix leaking merge bases
builtin/merge: fix leaking `struct cmdnames` in `get_strategy()`
sequencer: fix memory leaks in `make_script_with_merges()`
builtin/clone: plug leaking HEAD ref in `wanted_peer_refs()`
apply: fix leaking string in `match_fragment()`
sequencer: fix leaking string buffer in `commit_staged_changes()`
commit: fix leaking parents when calling `commit_tree_extended()`
config: fix leaking "core.notesref" variable
rerere: fix various trivial leaks
builtin/stash: fix leak in `show_stash()`
revision: free diff options
builtin/log: fix leaking commit list in git-cherry(1)
merge-recursive: fix memory leak when finalizing merge
builtin/merge-recursive: fix leaking object ID bases
builtin/difftool: plug memory leaks in `run_dir_diff()`
object-name: free leaking object contexts
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The variable used to track the "core.notesref" config is not getting
freed before we assign to it and thus leaks. Fix this.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* ps/leakfixes:
builtin/mv: fix leaks for submodule gitfile paths
builtin/mv: refactor to use `struct strvec`
builtin/mv duplicate string list memory
builtin/mv: refactor `add_slash()` to always return allocated strings
strvec: add functions to replace and remove strings
submodule: fix leaking memory for submodule entries
commit-reach: fix memory leak in `ahead_behind()`
builtin/credential: clear credential before exit
config: plug various memory leaks
config: clarify memory ownership in `git_config_string()`
builtin/log: stop using globals for format config
builtin/log: stop using globals for log config
convert: refactor code to clarify ownership of check_roundtrip_encoding
diff: refactor code to clarify memory ownership of prefixes
config: clarify memory ownership in `git_config_pathname()`
http: refactor code to clarify memory ownership
checkout: clarify memory ownership in `unique_tracking_name()`
strbuf: fix leak when `appendwholeline()` fails with EOF
transport-helper: fix leaking helper name
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A CPP macro USE_THE_REPOSITORY_VARIABLE is introduced to help
transition the codebase to rely less on the availability of the
singleton the_repository instance.
* ps/use-the-repository:
hex: guard declarations with `USE_THE_REPOSITORY_VARIABLE`
t/helper: remove dependency on `the_repository` in "proc-receive"
t/helper: fix segfault in "oid-array" command without repository
t/helper: use correct object hash in partial-clone helper
compat/fsmonitor: fix socket path in networked SHA256 repos
replace-object: use hash algorithm from passed-in repository
protocol-caps: use hash algorithm from passed-in repository
oidset: pass hash algorithm when parsing file
http-fetch: don't crash when parsing packfile without a repo
hash-ll: merge with "hash.h"
refs: avoid include cycle with "repository.h"
global: introduce `USE_THE_REPOSITORY_VARIABLE` macro
hash: require hash algorithm in `empty_tree_oid_hex()`
hash: require hash algorithm in `is_empty_{blob,tree}_oid()`
hash: make `is_null_oid()` independent of `the_repository`
hash: convert `oidcmp()` and `oideq()` to compare whole hash
global: ensure that object IDs are always padded
hash: require hash algorithm in `oidread()` and `oidclr()`
hash: require hash algorithm in `hasheq()`, `hashcmp()` and `hashclr()`
hash: drop (mostly) unused `is_empty_{blob,tree}_sha1()` functions
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Use of the `the_repository` variable is deprecated nowadays, and we
slowly but steadily convert the codebase to not use it anymore. Instead,
callers should be passing down the repository to work on via parameters.
It is hard though to prove that a given code unit does not use this
variable anymore. The most trivial case, merely demonstrating that there
is no direct use of `the_repository`, is already a bit of a pain during
code reviews as the reviewer needs to manually verify claims made by the
patch author. The bigger problem though is that we have many interfaces
that implicitly rely on `the_repository`.
Introduce a new `USE_THE_REPOSITORY_VARIABLE` macro that allows code
units to opt into usage of `the_repository`. The intent of this macro is
to demonstrate that a certain code unit does not use this variable
anymore, and to keep it from new dependencies on it in future changes,
be it explicit or implicit
For now, the macro only guards `the_repository` itself as well as
`the_hash_algo`. There are many more known interfaces where we have an
implicit dependency on `the_repository`, but those are not guarded at
the current point in time. Over time though, we should start to add
guards as required (or even better, just remove them).
Define the macro as required in our code units. As expected, most of our
code still relies on the global variable. Nearly all of our builtins
rely on the variable as there is no way yet to pass `the_repository` to
their entry point. For now, declare the macro in "biultin.h" to keep the
required changes at least a little bit more contained.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The pseudo-merge reachability bitmap to help more efficient storage
of the reachability bitmap in a repository with too many refs has
been added.
* tb/pseudo-merge-reachability-bitmap: (26 commits)
pack-bitmap.c: ensure pseudo-merge offset reads are bounded
Documentation/technical/bitmap-format.txt: add missing position table
t/perf: implement performance tests for pseudo-merge bitmaps
pseudo-merge: implement support for finding existing merges
ewah: `bitmap_equals_ewah()`
pack-bitmap: extra trace2 information
pack-bitmap.c: use pseudo-merges during traversal
t/test-lib-functions.sh: support `--notick` in `test_commit_bulk()`
pack-bitmap: implement test helpers for pseudo-merge
ewah: implement `ewah_bitmap_popcount()`
pseudo-merge: implement support for reading pseudo-merge commits
pack-bitmap.c: read pseudo-merge extension
pseudo-merge: scaffolding for reads
pack-bitmap: extract `read_bitmap()` function
pack-bitmap-write.c: write pseudo-merge table
pseudo-merge: implement support for selecting pseudo-merge commits
config: introduce `git_config_double()`
pack-bitmap: make `bitmap_writer_push_bitmapped_commit()` public
pack-bitmap: implement `bitmap_writer_has_bitmapped_object_id()`
pack-bitmap-write: support storing pseudo-merge commits
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Future commits will want to parse a double-precision floating point
value from configuration, but we have no way to parse such a value prior
to this patch.
The core of the routine is implemented in git_parse_double(). Unlike
git_parse_unsigned() and git_parse_signed(), however, the function
implemented here only works on type "double", and not related types like
"float", or "long double".
This is because "float" and "long double" use different functions to
convert from ASCII strings to floating point values (strtof() and
strtold(), respectively). Likewise, there is no pointer type that can
assign to any of these values (except for "void *"), so the only way to
define this trio of functions would be with a macro expansion that is
parameterized over the floating point type and conversion function.
That is all doable, but likely to be overkill given our current needs,
which is only to parse double-precision floats.
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Setting core.abbrev too early before the repository set-up
(typically in "git clone") caused segfault, which as been
corrected.
* ps/abbrev-length-before-setup-fix:
object-name: don't try to abbreviate to lengths greater than hexsz
parse-options-cb: stop clamping "--abbrev=" to hash length
config: fix segfault when parsing "core.abbrev" without repo
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The "core.abbrev" config allows the user to specify the minimum length
when abbreviating object hashes. Next to the values "auto" and "no",
this config also accepts a concrete length that needs to be bigger or
equal to the minimum length and smaller or equal to the hash algorithm's
hex length. While the former condition is trivial, the latter depends on
the object format used by the current repository. It is thus a variable
upper boundary that may either be 40 (SHA-1) or 64 (SHA-256).
This has two major downsides. First, the user that specifies this config
must be aware of the object hashes that its repository use. If they want
to configure the value globally, then they cannot pick any value in the
range `[41, 64]` if they have any repository that uses SHA-1. If they
did, Git would error out when parsing the config.
Second, and more importantly, parsing "core.abbrev" crashes when outside
of a Git repository because we dereference `the_hash_algo` to figure out
its hex length. Starting with c8aed5e8da (repository: stop setting SHA1
as the default object hash, 2024-05-07) though, we stopped initializing
`the_hash_algo` outside of Git repositories.
Fix both of these issues by not making it an error anymore when the
given length exceeds the hash length. Instead, leave the abbreviated
length intact. `repo_find_unique_abbrev_r()` handles this just fine
except for a performance penalty which we will fix in a subsequent
commit.
Reported-by: Kyle Lippincott <spectral@google.com>
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Varargs functions that are unannotated as printf-like or execl-like
have been annotated as such.
* jc/varargs-attributes:
__attribute__: add a few missing format attributes
__attribute__: mark some functions with LAST_ARG_MUST_BE_NULL
__attribute__: remove redundant attribute declaration for git_die_config()
__attribute__: trace2_region_enter_printf() is like "printf"
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The convention is to declare the function attribute to an extern
function together with its declaration in the header file, without
repeating the attribute declaration with its definition in the .c
source file (a file-scope static function declares its attribute
together with its definition in the .c file it is defined, as there
is no other place to do so).
The definition of git_die_config() in config.c did not follow the
convention and had its attribute declared with both its declaration
in the header and its definition in the .c source file.
Remove the one in the config.c to match everybody else.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Leakfixes.
* ps/leakfixes:
builtin/mv: fix leaks for submodule gitfile paths
builtin/mv: refactor to use `struct strvec`
builtin/mv duplicate string list memory
builtin/mv: refactor `add_slash()` to always return allocated strings
strvec: add functions to replace and remove strings
submodule: fix leaking memory for submodule entries
commit-reach: fix memory leak in `ahead_behind()`
builtin/credential: clear credential before exit
config: plug various memory leaks
config: clarify memory ownership in `git_config_string()`
builtin/log: stop using globals for format config
builtin/log: stop using globals for log config
convert: refactor code to clarify ownership of check_roundtrip_encoding
diff: refactor code to clarify memory ownership of prefixes
config: clarify memory ownership in `git_config_pathname()`
http: refactor code to clarify memory ownership
checkout: clarify memory ownership in `unique_tracking_name()`
strbuf: fix leak when `appendwholeline()` fails with EOF
transport-helper: fix leaking helper name
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Now that memory ownership rules around `git_config_string()` and
`git_config_pathname()` are clearer, it also got easier to spot that
the returned memory needs to be free'd. Plug a subset of those cases and
mark now-passing tests as leak free.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The out parameter of `git_config_string()` is a `const char **` even
though we transfer ownership of memory to the caller. This is quite
misleading and has led to many memory leaks all over the place. Adapt
the parameter to instead be `char **`.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The `check_roundtrip_encoding` variable is tracked in a `const char *`
even though it may contain allocated strings at times. The result is
that those strings may be leaking because we never free them.
Refactor the code to always store allocated strings in this variable.
The default value is handled in `check_roundtrip()` now, which is the
only user of the variable.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The out parameter of `git_config_pathname()` is a `const char **` even
though we transfer ownership of memory to the caller. This is quite
misleading and has led to many memory leaks all over the place. Adapt
the parameter to instead be `char **`.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Adjust jc/fix-2.45.1-and-friends-for-2.39 for more recent
maintenance track.
* jc/fix-2.45.1-and-friends-for-maint:
Revert "fsck: warn about symlink pointing inside a gitdir"
Revert "Add a helper function to compare file contents"
clone: drop the protections where hooks aren't run
tests: verify that `clone -c core.hooksPath=/dev/null` works again
Revert "core.hooksPath: add some protection while cloning"
init: use the correct path of the templates directory again
hook: plug a new memory leak
ci: stop installing "gcc-13" for osx-gcc
ci: avoid bare "gcc" for osx-gcc job
ci: drop mention of BREW_INSTALL_PACKAGES variable
send-email: avoid creating more than one Term::ReadLine object
send-email: drop FakeTerm hack
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