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2026-03-05Merge branch 'ob/core-attributesfile-in-repository'Junio C Hamano
The core.attributesfile is intended to be set per repository, but were kept track of by a single global variable in-core, which has been corrected by moving it to per-repository data structure. * ob/core-attributesfile-in-repository: environment: move "branch.autoSetupMerge" into `struct repo_config_values` environment: stop using core.sparseCheckout globally environment: stop storing `core.attributesFile` globally
2026-02-26environment: move "branch.autoSetupMerge" into `struct repo_config_values`Olamide Caleb Bello
The config value `branch.autoSetupMerge` is parsed in `git_default_branch_config()` and stored in the global variable `git_branch_track`. This global variable can be overwritten by another repository when multiple Git repos run in the the same process. Move this value into `struct repo_config_values` in the_repository to retain current behaviours and move towards libifying Git. Since the variable is no longer a global variable, it has been renamed to `branch_track` in the struct `repo_config_values`. Suggested-by: Phillip Wood <phillip.wood123@gmail.com> Mentored-by: Christian Couder <christian.couder@gmail.com> Mentored-by: Usman Akinyemi <usmanakinyemi202@gmail.com> Signed-off-by: Olamide Caleb Bello <belkid98@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-02-26environment: stop using core.sparseCheckout globallyOlamide Caleb Bello
The config value `core.sparseCheckout` is parsed in `git_default_core_config()` and stored globally in `core_apply_sparse_checkout`. This could cause it to be overwritten by another repository when different Git repositories run in the same process. Move the parsed value into `struct repo_config_values` in the_repository to retain current behaviours and move towards libifying Git. Suggested-by: Phillip Wood <phillip.wood123@gmail.com> Mentored-by: Christian Couder <christian.couder@gmail.com> Mentored-by: Usman Akinyemi <usmanakinyemi202@gmail.com> Signed-off-by: Olamide Caleb Bello <belkid98@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-02-20mailmap: drop global config variablesBurak Kaan Karaçay
The 'mailmap.file' and 'mailmap.blob' configurations are currently parsed and stored in the global variables 'git_mailmap_file' and 'git_mailmap_blob'. Since these values are typically only needed once when initializing a mailmap, there is no need to keep them as global state throughout the lifetime of the Git process. To reduce global state, remove these global variables and instead use 'repo_config_get_*' functions to read the configuration on demand. Signed-off-by: Burak Kaan Karaçay <bkkaracay@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-02-17Merge branch 'pc/lockfile-pid'Junio C Hamano
Allow recording process ID of the process that holds the lock next to a lockfile for diagnosis. * pc/lockfile-pid: lockfile: add PID file for debugging stale locks
2026-02-17environment: stop storing `core.attributesFile` globallyOlamide Caleb Bello
The `core.attributeFile` config value is parsed in git_default_core_config(), loaded eagerly and stored in the global variable `git_attributes_file`. Storing this value in a global variable can lead to it being overwritten by another repository when more than one Git repository run in the same Git process. Create a new struct `repo_config_values` to hold this value and other repository dependent values parsed by `git_default_config()`. This will ensure the current behaviour remains the same while also enabling the libification of Git. An accessor function 'repo_config_values()' s created to ensure that we do not access an uninitialized repository, or an instance of a different repository than the current one. Suggested-by: Phillip Wood <phillip.wood123@gmail.com> Mentored-by: Christian Couder <christian.couder@gmail.com> Mentored-by: Usman Akinyemi <usmanakinyemi202@gmail.com> Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Olamide Caleb Bello <belkid98@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-01-22lockfile: add PID file for debugging stale locksPaulo Casaretto
When a lock file is held, it can be helpful to know which process owns it, especially when debugging stale locks left behind by crashed processes. Add an optional feature that creates a companion PID file alongside each lock file, containing the PID of the lock holder. For a lock file "foo.lock", the PID file is named "foo~pid.lock". The tilde character is forbidden in refnames and allowed in Windows filenames, which guarantees no collision with the refs namespace (e.g., refs "foo" and "foo~pid" cannot both exist). The file contains a single line in the format "pid <value>" followed by a newline. The PID file is created when a lock is acquired (if enabled), and automatically cleaned up when the lock is released (via commit or rollback). The file is registered as a tempfile so it gets cleaned up by signal and atexit handlers if the process terminates abnormally. When a lock conflict occurs, the code checks for an existing PID file and, if found, uses kill(pid, 0) to determine if the process is still running. This allows providing context-aware error messages: Lock is held by process 12345. Wait for it to finish, or remove the lock file to continue. Or for a stale lock: Lock was held by process 12345, which is no longer running. Remove the stale lock file to continue. The feature is controlled via core.lockfilePid configuration (boolean). Defaults to false. When enabled, PID files are created for all lock operations. Existing PID files are always read when displaying lock errors, regardless of the core.lockfilePid setting. This ensures helpful diagnostics even when the feature was previously enabled and later disabled. Signed-off-by: Paulo Casaretto <pcasaretto@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-01-21Merge branch 'rs/tree-wo-the-repository'Junio C Hamano
Remove implicit reliance on the_repository global in the APIs around tree objects and make it explicit which repository to work in. * rs/tree-wo-the-repository: cocci: remove obsolete the_repository rules cocci: convert parse_tree functions to repo_ variants tree: stop using the_repository tree: use repo_parse_tree() path-walk: use repo_parse_tree_gently() pack-bitmap-write: use repo_parse_tree() delta-islands: use repo_parse_tree() bloom: use repo_parse_tree() add-interactive: use repo_parse_tree_indirect() tree: add repo_parse_tree*() environment: move access to core.maxTreeDepth into repo settings
2026-01-09environment: move access to core.maxTreeDepth into repo settingsRené Scharfe
The config setting core.maxTreeDepth is stored in a global variable and populated by the function git_default_core_config. This won't work if we need to access multiple repositories with different values of that setting in the same process. Store the setting in struct repo_settings instead and track it separately for each repository. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-01-09init: do parse _all_ core.* settings earlyJohannes Schindelin
In Git for Windows, `has_symlinks` is set to 0 by default. Therefore, we need to parse the config setting `core.symlinks` to know if it has been set to `true`. In `git init`, we must do that before copying the templates because they might contain symbolic links. Even if the support for symbolic links on Windows has not made it to upstream Git yet, we really should make sure that all the `core.*` settings are parsed before proceeding, as they might very well change the behavior of `git init` in a way the user intended. This fixes https://github.com/git-for-windows/git/issues/3414 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-09-18Merge branch 'pw/3.0-commentchar-auto-deprecation'Junio C Hamano
"core.commentChar=auto" that attempts to dynamically pick a suitable comment character is non-workable, as it is too much trouble to support for little benefit, and is marked as deprecated. * pw/3.0-commentchar-auto-deprecation: commit: print advice when core.commentString=auto config: warn on core.commentString=auto breaking-changes: deprecate support for core.commentString=auto
2025-08-26config: warn on core.commentString=autoPhillip Wood
As support for this setting was deprecated in the last commit print a warning (or die when WITH_BREAKING_CHANGES is enabled) if it is set. Avoid bombarding the user with warnings by only printing it (a) when running commands that call "git commit" and (b) only once per command. Some scaffolding is added to repo_read_config() to allow it to detect deprecated config settings and warn about them. As both "core.commentChar" and "core.commentString" set the comment character we record which one of them is used and tailor the warning message appropriately. Note the odd combination of die_message() followed by die(NULL) is to allow the next commit to insert a call to advise() in the middle. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-08-26breaking-changes: deprecate support for core.commentString=autoPhillip Wood
When "core.commentString" is set to "auto" then "git commit" will automatically select the comment character ensuring that it is not the first character on any of the lines in the commit message. This was introduced by commit 84c9dc2c5a2 (commit: allow core.commentChar=auto for character auto selection, 2014-05-17). The motivation seems to be to avoid commenting out lines from the existing message when amending a commit that was created with a message from a file. Unfortunately this feature does not work with: * commit message templates that contain comments. * prepare-commit-msg hooks that introduce comments. * "git commit --cleanup=strip --edit -F <file>" which means that it is incompatible with - the "fixup" and "squash" commands of "git rebase -i" as the comments added by those commands are then treated as part of the commit message. - the conflict comments added to the commit message by "git cherry-pick", "git rebase" etc. as these comments are then treated as part of the commit message. It is also ignored by "git notes" when amending a note. The issues with comments coming from a template, hook or file are a consequence of the design of this feature and are therefore hard to fix. As the costs of this feature outweigh the benefits, deprecate it and remove it in Git 3.0. If someone comes up with some patches that fix all the issues in a maintainable way then I'd be happy to see this change reverted. The next commits will add a warning and some advice for users on how they can update their config settings. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-08-22Merge branch 'ac/deglobal-fmt-merge-log-config'Junio C Hamano
Code clean-up. * ac/deglobal-fmt-merge-log-config: builtin/fmt-merge-msg: stop depending on 'the_repository' environment: remove the global variable 'merge_log_config'
2025-08-21Merge branch 'jc/strbuf-split'Junio C Hamano
Arrays of strbuf is often a wrong data structure to use, and strbuf_split*() family of functions that create them often have better alternatives. Update several code paths and replace strbuf_split*(). * jc/strbuf-split: trace2: do not use strbuf_split*() trace2: trim_trailing_newline followed by trim is a no-op sub-process: do not use strbuf_split*() environment: do not use strbuf_split*() config: do not use strbuf_split() notes: do not use strbuf_split*() merge-tree: do not use strbuf_split*() clean: do not use strbuf_split*() [part 2] clean: do not pass the whole structure when it is not necessary clean: do not use strbuf_split*() [part 1] clean: do not pass strbuf by value wt-status: avoid strbuf_split*()
2025-08-11environment: remove the global variable 'merge_log_config'Ayush Chandekar
The global variable 'merge_log_config', set via the "merge.log" or "merge.summary" settings, is only used in 'cmd_fmt_merge_msg()' and 'cmd_merge()' to adjust the 'shortlog_len' variable. Remove 'merge_log_config' globally and localize it in 'cmd_fmt_merge_msg()' and 'cmd_merge()'. Set its value by passing it in 'fmt_merge_msg_config()' by passing its pointer to the function via the callback parameter. This change is part of an ongoing effort to eliminate global variables, improve modularity and help libify the codebase. Mentored-by: Christian Couder <christian.couder@gmail.com> Mentored-by: Ghanshyam Thakkar <shyamthakkar001@gmail.com> Signed-off-by: Ayush Chandekar <ayu.chandekar@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-08-02environment: do not use strbuf_split*()Junio C Hamano
environment.c:get_git_namespace() learns the raw namespace from an environment variable, splits it at "/", and appends them after "refs/namespaces/"; the reason why it splits first is so that an empty string resulting from double slashes can be omitted. The split pieces do not need to be edited in any way, so an array of strbufs is a wrong data structure to use. Instead split into a string list and use the pieces from there. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-07-31Merge branch 'ps/config-wo-the-repository' into ↵Junio C Hamano
pw/3.0-commentchar-auto-deprecation * ps/config-wo-the-repository: (21 commits) config: fix sign comparison warnings config: move Git config parsing into "environment.c" config: remove unused `the_repository` wrappers config: drop `git_config_set_multivar()` wrapper config: drop `git_config_get_multivar_gently()` wrapper config: drop `git_config_set_multivar_in_file_gently()` wrapper config: drop `git_config_set_in_file_gently()` wrapper config: drop `git_config_set()` wrapper config: drop `git_config_set_gently()` wrapper config: drop `git_config_set_in_file()` wrapper config: drop `git_config_get_bool()` wrapper config: drop `git_config_get_ulong()` wrapper config: drop `git_config_get_int()` wrapper config: drop `git_config_get_string()` wrapper config: drop `git_config_get_string()` wrapper config: drop `git_config_get_string_multi()` wrapper config: drop `git_config_get_value()` wrapper config: drop `git_config_get_value()` wrapper config: drop `git_config_get()` wrapper config: drop `git_config_clear()` wrapper ...
2025-07-23config: move Git config parsing into "environment.c"Patrick Steinhardt
In "config.c" we host both the business logic to read and write config files as well as the logic to parse specific Git-related variables. On the one hand this is mixing concerns, but even more importantly it means that we cannot easily remove the dependency on `the_repository` in our config parsing logic. Move the logic into "environment.c". This file is a grab bag of all kinds of global state already, so it is quite a good fit. Furthermore, it also hosts most of the global variables that we're parsing the config values into, making this an even better fit. Note that there is one hidden change: in `parse_fsync_components()` we use an `int` to iterate through `ARRAY_SIZE(fsync_component_names)`. But as -Wsign-compare warnings are enabled in this file this causes a compiler warning. The issue is fixed by using a `size_t` instead. This change allows us to drop the `USE_THE_REPOSITORY_VARIABLE` declaration. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-07-07repository: move 'repository_format_precious_objects' to repo scopeAyush Chandekar
The 'extensions.preciousObjects' setting when set true, prevents operations that might drop objects from the object storage. This setting is populated in the global variable 'repository_format_precious_objects'. Move this global variable to repo scope by adding it to 'struct repository and also refactor all the occurences accordingly. This change is part of an ongoing effort to eliminate global variables, improve modularity and help libify the codebase. Mentored-by: Christian Couder <christian.couder@gmail.com> Mentored-by: Ghanshyam Thakkar <shyamthakkar001@gmail.com> Signed-off-by: Ayush Chandekar <ayu.chandekar@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-06-10environment: remove the global variable 'core_preload_index'Ayush Chandekar
The global variable 'core_preload_index' is used in a single function named 'preload_index()' in "preload-index.c". Move its declaration inside that function, removing unnecessary global state. This change is part of an ongoing effort to eliminate global variables, improve modularity and help libify the codebase. Mentored-by: Christian Couder <christian.couder@gmail.com> Mentored-by: Ghanshyam Thakkar <shyamthakkar001@gmail.com> Signed-off-by: Ayush Chandekar <ayu.chandekar@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-05Merge branch 'js/windows-arm64'Junio C Hamano
Update to arm64 Windows port. * js/windows-arm64: max_tree_depth: lower it for clangarm64 on Windows mingw(arm64): do move the `/etc/git*` location msvc: do handle builds on Windows/ARM64 mingw: do not use nedmalloc on Windows/ARM64 config.mak.uname: add support for clangarm64 bswap.h: add support for built-in bswap functions
2025-04-29Merge branch 'as/typofix-in-env-h-header'Junio C Hamano
Typofix. * as/typofix-in-env-h-header: environment: fix typo: 'setup_git_directory_gently'
2025-04-23max_tree_depth: lower it for clangarm64 on WindowsJohannes Schindelin
Just as in b64d78ad02ca (max_tree_depth: lower it for MSVC to avoid stack overflows, 2023-11-01), I encountered the same problem with the clang builds on Windows/ARM64. The symptom is an exit code 127 when t6700 tries to verify that `git archive big` fails. This exit code is reserved on Unix/Linux to mean "command not found". Unfortunately in this case, it is the fall-back chosen by Cygwin's `pinfo::status_exit()` method when encountering the NSTATUS `STATUS_STACK_OVERFLOW`, see https://github.com/cygwin/cygwin/blob/cygwin-3.6.1/winsup/cygwin/pinfo.cc#L171 I verified manually that the stack overflow always happens somewhere around tree depth 1403, therefore 1280 should be a safe bound in these instances. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-18environment: fix typo: 'setup_git_directory_gently'Abhijeet Sonar
Above the declaration of git_work_tree_cfg, we have: /* This is set by setup_git_dir_gently() and/or git_default_config() */ char *git_work_tree_cfg; It can be verified that there is no function called 'setup_git_dir_gently' by running grep on the codebase: $ grep -R setup_git_dir_gently . ./environment.c:/* This is set by setup_git_dir_gently() and/or git_default_config() */ The comment, introduced in e90fdc39b6 (Clean up work-tree handling), is the only occurrence of the name 'setup_git_dir_gently'. It probably meant 'setup_git_directory_gently' as that is a name of a real function in setup.c. Correct it. Signed-off-by: Abhijeet Sonar <abhijeet.nkt@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-03-10environment: move access to "core.bigFileThreshold" into repo settingsPatrick Steinhardt
The "core.bigFileThreshold" setting is stored in a global variable and populated via `git_default_core_config()`. This may cause issues in the case where one is handling multiple different repositories in a single process with different values for that config key, as we may or may not see the correct value in that case. Furthermore, global state blocks our path towards libification. Refactor the code so that we instead store the value in `struct repo_settings`, where the value is computed as-needed and cached. Note that this change requires us to adapt one test in t1050 that verifies that we die when parsing an invalid "core.bigFileThreshold" value. The exercised Git command doesn't use the value at all, and thus it won't hit the new code path that parses the value. This is addressed by using git-hash-object(1) instead, which does read the value. 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 Hamano
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
2025-02-28environment: move access to "core.sharedRepository" into repo settingsPatrick Steinhardt
Similar as with the preceding commit, we track "core.sharedRepository" via a pair of global variables. Move them into `struct repo_settings` so that we can instead track them per-repository. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-02-28environment: move access to "core.hooksPath" into repo settingsPatrick Steinhardt
The "core.hooksPath" setting is stored in a global variable and populated via the `git_default_core_config`. This may cause issues in the case where one is handling multiple different repositories in a single process with different values for that config key, as we may or may not see the correct value in that case. Furthermore, global state blocks our path towards libification. Refactor the code so that we instead store the value in `struct repo_settings`. The value is computed as-needed and cached. The result should be functionally the same as there aren't ever any code paths where we'd execute hooks outside the context of a repository. Note that this requires us to change the passed-in repository in the `repo_git_path()` family of functions to be non-constant, as we call `adjust_git_path()` there. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-28git-compat-util: move include of "compat/zlib.h" into "git-zlib.h"Patrick Steinhardt
We include "compat/zlib.h" in "git-compat-util.h", which is unnecessarily broad given that we only have a small handful of files that use the zlib library. Move the header into "git-zlib.h" instead and adapt users of zlib to include that header. One exception is the reftable library, as we don't want to use the Git-specific wrapper of zlib there, so we include "compat/zlib.h" instead. Furthermore, we move the include into "reftable/system.h" so that users of the library other than Git can wire up zlib themselves. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-04config: make `packed_git_(limit|window_size)` non-global variablesKarthik Nayak
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>
2024-12-04config: make `delta_base_cache_limit` a non-global variableKarthik Nayak
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>
2024-09-12environment: stop storing "core.notesRef" globallyPatrick Steinhardt
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>
2024-09-12environment: stop storing "core.warnAmbiguousRefs" globallyPatrick Steinhardt
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>
2024-09-12environment: stop storing "core.preferSymlinkRefs" globallyPatrick Steinhardt
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>
2024-09-12environment: stop storing "core.logAllRefUpdates" globallyPatrick Steinhardt
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>
2024-09-12environment: move `set_git_dir()` and related into setup layerPatrick Steinhardt
The functions `set_git_dir()` and friends are used to set up repositories. As such, they are quite clearly part of the setup subsystem, but still live in "environment.c". Move them over, which also helps to get rid of dependencies on `the_repository` in the environment subsystem. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-09-12environment: make `get_git_namespace()` self-containedPatrick Steinhardt
The logic to set up and retrieve `git_namespace` is distributed across different functions which communicate with each other via a global environment variable. This is rather pointless though, as the value is always derived from an environment variable, and this environment variable does not change after we have parsed global options. Convert the function to be fully self-contained such that it lazily populates once called. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-09-12environment: move object database functions into object layerPatrick Steinhardt
The `odb_mkstemp()` and `odb_pack_keep()` functions are quite clearly tied to the object store, but regardless of that they are located in "environment.c". Move them over, which also helps to get rid of dependencies on `the_repository` in the environment subsystem. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-09-12environment: make `get_git_work_tree()` accept a repositoryPatrick Steinhardt
The `get_git_work_tree()` function retrieves the path of the work tree of `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>
2024-09-12environment: make `get_graft_file()` accept a repositoryPatrick Steinhardt
The `get_graft_file()` function retrieves the path to the graft file of `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>
2024-09-12environment: make `get_index_file()` accept a repositoryPatrick Steinhardt
The `get_index_file()` function retrieves the path to the index file of `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>
2024-09-12environment: make `get_object_directory()` accept a repositoryPatrick Steinhardt
The `get_object_directory()` function retrieves the path to the object 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>
2024-09-12environment: make `get_git_common_dir()` accept a repositoryPatrick Steinhardt
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>
2024-09-12environment: make `get_git_dir()` accept a repositoryPatrick Steinhardt
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>
2024-08-14config: fix leaking comment character configPatrick Steinhardt
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>
2024-06-14global: introduce `USE_THE_REPOSITORY_VARIABLE` macroPatrick Steinhardt
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>
2024-05-27config: clarify memory ownership in `git_config_string()`Patrick Steinhardt
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>
2024-05-27convert: refactor code to clarify ownership of check_roundtrip_encodingPatrick Steinhardt
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>
2024-05-27config: clarify memory ownership in `git_config_pathname()`Patrick Steinhardt
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>