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2025-10-08Merge branch 'ps/rust-balloon'Junio C Hamano1-2/+4
Dip our toes a bit to (optionally) use Rust implemented helper called from our C code. * ps/rust-balloon: ci: enable Rust for breaking-changes jobs ci: convert "pedantic" job into full build with breaking changes BreakingChanges: announce Rust becoming mandatory varint: reimplement as test balloon for Rust varint: use explicit width for integers help: report on whether or not Rust is enabled Makefile: introduce infrastructure to build internal Rust library Makefile: reorder sources after includes meson: add infrastructure to build internal Rust library
2025-10-02varint: use explicit width for integersPatrick Steinhardt1-2/+4
The varint subsystem currently uses implicit widths for integers. On the one hand we use `uintmax_t` for the actual value. On the other hand, we use `int` for the length of the encoded varint. Both of these have known maximum values, as we only support at most 16 bytes when encoding varints. Thus, we know that we won't ever exceed `uint64_t` for the actual value and `uint8_t` for the prefix length. Refactor the code to use explicit widths. Besides making the logic platform-independent, it also makes our life a bit easier in the next commit, where we reimplement "varint.c" in Rust. Suggested-by: Ezekiel Newren <ezekielnewren@gmail.com> Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-09-16odb: add transaction interfaceJustin Tobler1-2/+2
Transactions are managed via the {begin,end}_odb_transaction() function in the object-file subsystem and its implementation is specific to the files object source. Introduce odb_transaction_{begin,commit}() in the odb subsystem to provide an eventual object source agnostic means to manage transactions. Update call sites to instead manage transactions through the odb subsystem. Also rename {begin,end}_odb_transaction() functions to object_file_transaction_{begin,commit}() to clarify the object source it supports. Signed-off-by: Justin Tobler <jltobler@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-09-16object-file: relocate ODB transaction codeJustin Tobler1-1/+0
The bulk-checkin subsystem provides various functions to manage ODB transactions. Apart from {begin,end}_odb_transaction(), these functions are only used by the object-file subsystem to manage aspects of a transaction implementation specific to the files object source. Relocate all the transaction code in bulk-checkin to object-file. This simplifies the exposed transaction interface by reducing it to only {begin,end}_odb_transaction(). Function and type names are adjusted in the subsequent commit to better fit the new location. Signed-off-by: Justin Tobler <jltobler@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-08-25bulk-checkin: remove global transaction stateJustin Tobler1-2/+3
Object database transactions in the bulk-checkin subsystem rely on global state to track transaction status. Stop relying on global state and instead store the transaction in the `struct object_database`. Functions that operate on transactions are updated to now wire transaction state. Signed-off-by: Justin Tobler <jltobler@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-08-05Merge branch 'ps/object-file-wo-the-repository'Junio C Hamano1-1/+1
Reduce implicit assumption and dependence on the_repository in the object-file subsystem. * ps/object-file-wo-the-repository: object-file: get rid of `the_repository` in index-related functions object-file: get rid of `the_repository` in `force_object_loose()` object-file: get rid of `the_repository` in `read_loose_object()` object-file: get rid of `the_repository` in loose object iterators object-file: remove declaration for `for_each_file_in_obj_subdir()` object-file: inline `for_each_loose_file_in_objdir_buf()` object-file: get rid of `the_repository` when writing objects odb: introduce `odb_write_object()` loose: write loose objects map via their source object-file: get rid of `the_repository` in `finalize_object_file()` object-file: get rid of `the_repository` in `loose_object_info()` object-file: get rid of `the_repository` when freshening objects object-file: inline `check_and_freshen()` functions object-file: get rid of `the_repository` in `has_loose_object()` object-file: stop using `the_hash_algo` object-file: fix -Wsign-compare warnings
2025-07-23config: drop `git_config_get_bool()` wrapperPatrick Steinhardt1-2/+2
In 036876a1067 (config: hide functions using `the_repository` by default, 2024-08-13) we have moved around a bunch of functions in the config subsystem that depend on `the_repository`. Those function have been converted into mere wrappers around their equivalent function that takes in a repository as parameter, and the intent was that we'll eventually remove those wrappers to make the dependency on the global repository variable explicit at the callsite. Follow through with that intent and remove `git_config_get_bool()`. All callsites are adjusted so that they use `repo_config_get_bool(the_repository, ...)` instead. While some callsites might already have a repository available, this mechanical conversion is the exact same as the current situation and thus cannot cause any regression. Those sites should eventually be cleaned up in a later patch series. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-07-16odb: introduce `odb_write_object()`Patrick Steinhardt1-1/+1
We do not have a backend-agnostic way to write objects into an object database. While there is `write_object_file()`, this function is rather specific to the loose object format. Introduce `odb_write_object()` to plug this gap. For now, this function is a simple wrapper around `write_object_file()` and doesn't even use the passed-in object database yet. This will change in subsequent commits, where `write_object_file()` is converted so that it works on top of an `odb_source`. `odb_write_object()` will then become responsible for deciding which source an object shall be written to. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-07-15Merge branch 'ps/object-store'Junio C Hamano1-7/+7
Code clean-up around object access API. * ps/object-store: odb: rename `read_object_with_reference()` odb: rename `pretend_object_file()` odb: rename `has_object()` odb: rename `repo_read_object_file()` odb: rename `oid_object_info()` odb: trivial refactorings to get rid of `the_repository` odb: get rid of `the_repository` when handling submodule sources odb: get rid of `the_repository` when handling the primary source odb: get rid of `the_repository` in `for_each()` functions odb: get rid of `the_repository` when handling alternates odb: get rid of `the_repository` in `odb_mkstemp()` odb: get rid of `the_repository` in `assert_oid_type()` odb: get rid of `the_repository` in `find_odb()` odb: introduce parent pointers object-store: rename files to "odb.{c,h}" object-store: rename `object_directory` to `odb_source` object-store: rename `raw_object_store` to `object_database`
2025-07-07read-cache: report lock error when refreshing indexHan Young1-1/+2
In the repo_refresh_and_write_index of read-cache.c, we return -1 to indicate that writing the index to disk failed. However, callers do not use this information. Commands such as stash print "could not write index" and then exit, which does not help to discover the exact problem. We can let repo_hold_locked_index print the error message if the locking failed. Signed-off-by: Han Young <hanyang.tony@bytedance.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-07-01odb: rename `repo_read_object_file()`Patrick Steinhardt1-3/+3
Rename `repo_read_object_file()` to `odb_read_object()` to match other functions related to the object database and our modern coding guidelines. Introduce a compatibility wrapper so that any in-flight topics will continue to compile. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-07-01odb: rename `oid_object_info()`Patrick Steinhardt1-3/+3
Rename `oid_object_info()` to `odb_read_object_info()` as well as their `_extended()` variant to match other functions related to the object database and our modern coding guidelines. Introduce compatibility wrappers so that any in-flight topics will continue to compile. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-07-01object-store: rename files to "odb.{c,h}"Patrick Steinhardt1-1/+1
In the preceding commits we have renamed the structures contained in "object-store.h" to `struct object_database` and `struct odb_backend`. As such, the code files "object-store.{c,h}" are confusingly named now. Rename them to "odb.{c,h}" accordingly. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-15has_dir_name(): make code more obviousJohannes Schindelin1-42/+13
One thing that might be non-obvious to readers (or to analyzers like CodeQL) is that the function essentially does nothing when the Git index is empty, and in particular that it does not look at the value of `len_eq_last` (which would be uninitialized at that point). Let's make this much easier to understand, by returning early if the Git index is empty, and by avoiding empty `else` blocks. This commit changes indentation and is hence best viewed using `--ignore-space-change`. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-24Merge branch 'ps/object-file-cleanup'Junio C Hamano1-3/+3
Code clean-up. * ps/object-file-cleanup: object-store: merge "object-store-ll.h" and "object-store.h" object-store: remove global array of cached objects object: split out functions relating to object store subsystem object-file: drop `index_blob_stream()` object-file: split up concerns of `HASH_*` flags object-file: split out functions relating to object store subsystem object-file: move `xmmap()` into "wrapper.c" object-file: move `git_open_cloexec()` to "compat/open.c" object-file: move `safe_create_leading_directories()` into "path.c" object-file: move `mkdir_in_gitdir()` into "path.c"
2025-04-23Merge branch 'js/range-check-codeql-workaround'Junio C Hamano1-2/+2
Work around false positive from CodeQL checker. * js/range-check-codeql-workaround: read-cache: check range before dereferencing an array element
2025-04-15object-store: merge "object-store-ll.h" and "object-store.h"Patrick Steinhardt1-1/+1
The "object-store-ll.h" header has been introduced to keep transitive header dependendcies and compile times at bay. Now that we have created a new "object-store.c" file though we can easily move the last remaining additional bit of "object-store.h", the `odb_path_map`, out of the header. Do so. As the "object-store.h" header is now equivalent to its low-level alternative we drop the latter and inline it into the former. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-15object-file: split up concerns of `HASH_*` flagsPatrick Steinhardt1-2/+2
The functions `hash_object_file()`, `write_object_file()` and `index_fd()` reuse the same set of flags to alter their behaviour. This not only adds confusion, but given that every function only supports a subset of the flags it becomes very hard to see which flags can be passed to what function. Last but not least, this entangles the implementation of all three function families. Split up concerns by creating separate flags for each of the function families. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-03-28read-cache: check range before dereferencing an array elementJohannes Schindelin1-2/+2
Before accessing an array element at a given index, we should make sure that the index is within the desired bounds, otherwise it makes little sense to access the array element in the first place. In this instance, testing whether `ce->name[common]` is the trailing NUL byte is technically different from testing whether `common` is within the bounds of `previous_name`. It is also redundant, as the range-check guarantees that `previous_name->buf[common]` cannot be NUL and therefore the condition `ce->name[common] == previous_name->buf[common]` would not be met if `ce->name[common]` evaluated to NUL. However, in the interest of reducing the cognitive load to reason about the correctness of this loop (so that I can focus on interesting projects again), I'll simply move the range-check to the beginning of the loop condition and keep the redundant NUL check. This acquiesces CodeQL's `cpp/offset-use-before-range-check` rule. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-03-10hash: stop depending on `the_repository` in `null_oid()`Patrick Steinhardt1-1/+1
The `null_oid()` function returns the object ID that only consists of zeroes. Naturally, this ID also depends on the hash algorithm used, as the number of zeroes is different between SHA1 and SHA256. Consequently, the function returns the hash-algorithm-specific null object ID. This is currently done by depending on `the_hash_algo`, which implicitly makes us depend on `the_repository`. Refactor the function to instead pass in the hash algorithm for which we want to retrieve the null object ID. Adapt callsites accordingly by passing in `the_repository`, thus bubbling up the dependency on that global variable by one layer. There are a couple of trivial exceptions for subsystems that already got rid of `the_repository`. These subsystems instead use the repository that is available via the calling context: - "builtin/grep.c" - "grep.c" - "refs/debug.c" There are also two non-trivial exceptions: - "diff-no-index.c": Here we know that we may not have a repository initialized at all, so we cannot rely on `the_repository`. Instead, we adapt `diff_no_index()` to get a `struct git_hash_algo` as parameter. The only caller is located in "builtin/diff.c", where we know to call `repo_set_hash_algo()` in case we're running outside of a Git repository. Consequently, it is fine to continue passing `the_repository->hash_algo` even in this case. - "builtin/ls-files.c": There is an in-flight patch series that drops `USE_THE_REPOSITORY_VARIABLE` in this file, which causes a semantic conflict because we use `null_oid()` in `show_submodule()`. The value is passed to `repo_submodule_init()`, which may use the object ID to resolve a tree-ish in the superproject from which we want to read the submodule config. As such, the object ID should refer to an object in the superproject, and consequently we need to use its hash algorithm. This means that we could in theory just not bother about this edge case at all and just use `the_repository` in "diff-no-index.c". But doing so would feel misdesigned. Remove the `USE_THE_REPOSITORY_VARIABLE` preprocessor define in "hash.c". Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-03-10csum-file: stop depending on `the_repository`Patrick Steinhardt1-1/+1
There are multiple sites in "csum-file.c" where we use the global `the_repository` variable, either explicitly or implicitly by using `the_hash_algo`. Refactor the code to stop using `the_repository` by adapting functions to receive required data as parameters. Adapt callsites accordingly by either using `the_repository->hash_algo`, or by using a context-provided hash algorithm in case the subsystem already got rid of its dependency on `the_repository`. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-03-05Merge branch 'ps/path-sans-the-repository'Junio C Hamano1-8/+18
The path.[ch] API takes an explicit repository parameter passed throughout the callchain, instead of relying on the_repository singleton instance. * ps/path-sans-the-repository: path: adjust last remaining users of `the_repository` environment: move access to "core.sharedRepository" into repo settings environment: move access to "core.hooksPath" into repo settings repo-settings: introduce function to clear struct path: drop `git_path()` in favor of `repo_git_path()` rerere: let `rerere_path()` write paths into a caller-provided buffer path: drop `git_common_path()` in favor of `repo_common_path()` worktree: return allocated string from `get_worktree_git_dir()` path: drop `git_path_buf()` in favor of `repo_git_path_replace()` path: drop `git_pathdup()` in favor of `repo_git_path()` path: drop unused `strbuf_git_path()` function path: refactor `repo_submodule_path()` family of functions submodule: refactor `submodule_to_gitdir()` to accept a repo path: refactor `repo_worktree_path()` family of functions path: refactor `repo_git_path()` family of functions path: refactor `repo_common_path()` family of functions
2025-02-28path: adjust last remaining users of `the_repository`Patrick Steinhardt1-1/+1
With the preceding refactorings we now only have a couple of implicit users of `the_repository` left in the "path" subsystem, all of which depend on global state via `calc_shared_perm()`. Make the dependency on `the_repository` explicit by passing the repo as a parameter instead and adjust callers accordingly. Note that this change bubbles up into a couple of subsystems that were previously declared as free from `the_repository`. Instead of marking all of them as `the_repository`-dependent again, we instead use the repository that is available in the calling context. There are three exceptions though with "copy.c", "pack-write.c" and "tempfile.c". Adjusting these would require us to adapt callsites all over the place, so this is left for a future iteration. Mark "path.c" as free from `the_repository`. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-02-28path: drop `git_path()` in favor of `repo_git_path()`Patrick Steinhardt1-7/+17
Remove `git_path()` in favor of the `repo_git_path()` family of functions, which makes the implicit dependency on `the_repository` go away. Note that `git_path()` returned a string allocated via `get_pathname()`, which uses a rotating set of statically allocated buffers. Consequently, callers didn't have to free the returned string. The same isn't true for `repo_common_path()`, so we also have to add logic to free the returned strings. This refactoring also allows us to remove `repo_common_pathv()` as well as `get_pathname()` from the public interface. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-31global: adapt callers to use generic hash context helpersPatrick Steinhardt1-7/+7
Adapt callers to use generic hash context helpers instead of using the hash algorithm to update them. This makes the callsites easier to reason about and removes the possibility that the wrong hash algorithm is used to update the hash context's state. And as a nice side effect this also gets rid of a bunch of users of `the_hash_algo`. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-31hash: stop typedeffing the hash contextPatrick Steinhardt1-6/+6
We generally avoid using `typedef` in the Git codebase. One exception though is the `git_hash_ctx`, likely because it used to be a union rather than a struct until the preceding commit refactored it. But now that it is a normal `struct` there isn't really a need for a typedef anymore. Drop the typedef and adapt all callers accordingly. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-18resolve-undo: stop using `the_repository`Patrick Steinhardt1-2/+2
Stop using `the_repository` in the "resolve-undo" subsystem by passing in the hash algorithm when reading or writing resolve-undo information. While we could trivially update the caller to pass in the hash algorithm used by the index itself, we instead pass in `the_hash_algo`. This is mostly done to stay consistent with the rest of the code in that file, which isn't prepared to handle arbitrary repositories, either. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-18progress: stop using `the_repository`Patrick Steinhardt1-1/+2
Stop using `the_repository` in the "progress" subsystem by passing in a repository when initializing `struct progress`. Furthermore, store a pointer to the repository in that struct so that we can pass it to the trace2 API when logging information. Adjust callers accordingly by using `the_repository`. While there may be some callers that have a repository available in their context, this trivial conversion allows for easier verification and bubbles up the use of `the_repository` by one level. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-06global: mark code units that generate warnings with `-Wsign-compare`Patrick Steinhardt1-0/+1
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>
2024-10-22Merge branch 'ps/cache-tree-w-broken-index-entry'Taylor Blau1-2/+3
Fail gracefully instead of crashing when attempting to write the contents of a corrupt in-core index as a tree object. * ps/cache-tree-w-broken-index-entry: unpack-trees: detect mismatching number of cache-tree/index entries cache-tree: detect mismatching number of index entries cache-tree: refactor verification to return error codes
2024-10-10Merge branch 'ps/leakfixes-part-8'Junio C Hamano1-0/+1
More leakfixes. * ps/leakfixes-part-8: (23 commits) builtin/send-pack: fix leaking list of push options remote: fix leaking push reports t/helper: fix leaks in proc-receive helper pack-write: fix return parameter of `write_rev_file_order()` revision: fix leaking saved parents revision: fix memory leaks when rewriting parents midx-write: fix leaking buffer pack-bitmap-write: fix leaking OID array pseudo-merge: fix leaking strmap keys pseudo-merge: fix various memory leaks line-log: fix several memory leaks diff: improve lifecycle management of diff queues builtin/revert: fix leaking `gpg_sign` and `strategy` config t/helper: fix leaking repository in partial-clone helper builtin/clone: fix leaking repo state when cloning with bundle URIs builtin/pack-redundant: fix various memory leaks builtin/stash: fix leaking `pathspec_from_file` submodule: fix leaking submodule entry list wt-status: fix leaking buffer with sparse directories shell: fix leaking strings ...
2024-10-07cache-tree: refactor verification to return error codesPatrick Steinhardt1-2/+3
The function `cache_tree_verify()` will `BUG()` whenever it finds that the cache-tree extension of the index is corrupt. The function is thus inherently untestable because the resulting call to `abort()` will be detected by our testing framework and labelled an error. And rightfully so: it shouldn't ever be possible to hit bugs, as they should indicate a programming error rather than corruption of on-disk state. Refactor the function to instead return error codes. This also ensures that the function can be used e.g. by git-fsck(1) without the whole process dying. Furthermore, this refactoring plugs some memory leaks when returning early by creating a common exit path. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-10-04Merge branch 'ds/read-cache-mempool-leakfix'Junio C Hamano1-0/+1
Leakfix. * ds/read-cache-mempool-leakfix: read-cache: free threaded memory pool
2024-10-01read-cache: free threaded memory poolDerrick Stolee1-0/+1
In load_cache_entries_threaded(), each thread allocates its own memory pool. This pool needs to be cleaned up while closing the threads down, or it will be leaked. This ce_mem_pool pointer could theoretically be converted to an inline copy of the struct, but the use of a pointer helps with existing lazy- initialization logic. Adjusting that behavior only to avoid this pointer would be a much bigger change. Signed-off-by: Derrick Stolee <stolee@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-09-30read-cache: fix leaking hash context in `do_write_index()`Patrick Steinhardt1-0/+1
When writing an index with the EOIE extension we allocate a separate hash context. We never free that context though, causing a memory leak. Plug it. This leak is exposed by t9210, but plugging it alone does not make the whole test suite pass. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-09-12environment: make `get_git_dir()` accept a repositoryPatrick Steinhardt1-2/+4
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>
2024-08-26Merge branch 'ps/maintenance-detach-fix'Junio C Hamano1-3/+9
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()`
2024-08-23Merge branch 'ps/config-wo-the-repository'Junio C Hamano1-11/+11
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()`
2024-08-16config: fix constness of out parameter for `git_config_get_expiry()`Patrick Steinhardt1-3/+9
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>
2024-08-14read-cache: fix leaking hashfile when writing index failsPatrick Steinhardt1-39/+58
In `do_write_index()`, we use a `struct hashfile` to write the index with a trailer hash. In case the write fails though, we never clean up the allocated `hashfile` state and thus leak memory. Refactor the code to have a common exit path where we can free this and other allocated memory. While at it, refactor our use of `strbuf`s such that we reuse the same buffer to avoid some unneeded allocations. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-13config: pass repo to `git_config_get_expiry()`Patrick Steinhardt1-2/+2
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>
2024-08-13config: pass repo to `git_config_get_max_percent_split_change()`Patrick Steinhardt1-1/+1
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>
2024-08-13config: pass repo to `git_config_get_split_index()`Patrick Steinhardt1-1/+1
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>
2024-08-13config: pass repo to `git_config_get_index_threads()`Patrick Steinhardt1-4/+4
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>
2024-08-13hooks: remove implicit dependency on `the_repository`Patrick Steinhardt1-3/+3
We implicitly depend on `the_repository` in our hook subsystem because we use `strbuf_git_path()` to compute hook paths. Remove this dependency by accepting a `struct repository` as parameter instead. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-06-14global: introduce `USE_THE_REPOSITORY_VARIABLE` macroPatrick Steinhardt1-0/+3
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>
2024-06-14hash: require hash algorithm in `is_empty_{blob,tree}_oid()`Patrick Steinhardt1-1/+1
Both functions `is_empty_{blob,tree}_oid()` use `the_repository` to derive the hash function that shall be used. Require callers to pass in the hash algorithm to get rid of this implicit dependency. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-06-14hash: require hash algorithm in `oidread()` and `oidclr()`Patrick Steinhardt1-3/+5
Both `oidread()` and `oidclr()` use `the_repository` to derive the hash function that shall be used. Require callers to pass in the hash algorithm to get rid of this implicit dependency. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-06-14hash: require hash algorithm in `hasheq()`, `hashcmp()` and `hashclr()`Patrick Steinhardt1-4/+4
Many of our hash functions have two variants, one receiving a `struct git_hash_algo` and one that derives it via `the_repository`. Adapt all of those functions to always require the hash algorithm as input and drop the variants that do not accept one. As those functions are now independent of `the_repository`, we can move them from "hash.h" to "hash-ll.h". Note that both in this and subsequent commits in this series we always just pass `the_repository->hash_algo` as input even if it is obvious that there is a repository in the context that we should be using the hash from instead. This is done to be on the safe side and not introduce any regressions. All callsites should eventually be amended to use a repo passed via parameters, but this is outside the scope of this patch series. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-06-14hash: drop (mostly) unused `is_empty_{blob,tree}_sha1()` functionsPatrick Steinhardt1-1/+1
The functions `is_empty_{blob,tree}_sha1()` are mostly unused, except for a single callsite in "read-cache.c". Most callsites have long since been converted to use the equivalents that accept a `struct object_id` instead of a string. Adapt the remaining callsite and drop those functions. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>