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2026-03-25hook: reject unknown hook names in git-hook(1)Adrian Ratiu
Teach "git hook run" and "git hook list" to reject hook event names that are not recognized by Git. This helps catch typos such as "prereceive" when "pre-receive" was intended, since in 99% of the cases users want known (already-existing) hook names. The list of known hooks is derived from the generated hook-list.h (built from Documentation/githooks.adoc). This is why the Makefile is updated, so builtin/hook.c depends on hook-list.h. In meson the header is already a dependency for all builtins, no change required. The "--allow-unknown-hook-name" flag can be used to bypass this check. Suggested-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-03-25hook: show disabled hooks in "git hook list"Adrian Ratiu
Disabled hooks were filtered out of the cache entirely, making them invisible to "git hook list". Keep them in the cache with a new "disabled" flag which is propagated to the respective struct hook. "git hook list" now shows disabled hooks as tab-separated columns, with the status as a prefix before the name (like scope with --show-scope). With --show-scope it looks like: $ git hook list --show-scope pre-commit global linter local disabled no-leaks hook from hookdir A disabled hook without a command issues a warning instead of the fatal "hook.X.command must be configured" error. We could also throw an error, however it seemd a bit excessive to me in this case. Suggested-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-03-25hook: show config scope in git hook listAdrian Ratiu
Users running "git hook list" can see which hooks are configured but have no way to tell at which config scope (local, global, system...) each hook was defined. Store the scope from ctx->kvi->scope in the single-pass config callback, then carry it through the cache to the hook structs, so we can expose it to users via the "git hook list --show-scope" flag, which mirrors the existing git config --show-scope convention. Without the flag the output is unchanged. The scope is printed as a tab-separated prefix (like "git config --show-scope"), making it unambiguously machine-parseable even when the friendly name contains spaces. Example usage: $ git hook list --show-scope pre-commit global linter local no-leaks hook from hookdir Traditional hooks from the hookdir are unaffected by --show-scope since the config scope concept does not apply to them. Suggested-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-03-25hook: replace hook_list_clear() -> string_list_clear_func()Adrian Ratiu
Replace the custom function with string_list_clear_func() which is a more common pattern for clearing a string_list. To be able to do this, rework hook_clear() into hook_free(), so it can be passed to string_list_clear_func(). A slight complication is the need to keep a copy of the internal cb data free() pointer, however I think it's worth it since the API becomes cleaner, e.g. no more calls with NULL function args like hook_list_clear(hooks, NULL). In other words, the callers don't need to keep track of hook internal state to determine when cleanup is necessary or not (pass NULL) because each `struct hook` now owns its data_free callback. Suggested-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-03-25hook: fix minor style issuesAdrian Ratiu
Fix some minor style nits pointed out by Patrick, Junio and Eric: * Use CALLOC_ARRAY instead of xcalloc. * Init struct members during declaration. * Simplify if condition boolean logic. * Missing curly braces in if/else stmts. * Unnecessary header includes. * Capitalization and full-stop in error/warn messages. * Curly brace on separate line when defining struct. * Comment spelling: free'd -> freed. * Sort the included headers. * Blank line fixes to improve readability. These contain no logic changes, the code behaves the same as before. Suggested-by: Eric Sunshine <sunshine@sunshineco.com> Suggested-by: Junio C Hamano <gitster@pobox.com> Suggested-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-02-19hook: add -z option to "git hook list"Adrian Ratiu
Add a NUL-terminate mode to git hook list, just in case hooks are configured with weird characters like newlines in their names. Suggested-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-02-19hook: include hooks from the configAdrian Ratiu
Teach the hook.[hc] library to parse configs to populate the list of hooks to run for a given event. Multiple commands can be specified for a given hook by providing "hook.<friendly-name>.command = <path-to-hook>" and "hook.<friendly-name>.event = <hook-event>" lines. Hooks will be started in config order of the "hook.<name>.event" lines and will be run sequentially (.jobs == 1) like before. Running the hooks in parallel will be enabled in a future patch. The "traditional" hook from the hookdir is run last, if present. A strmap cache is added to struct repository to avoid re-reading the configs on each rook run. This is useful for hooks like the ref-transaction which gets executed multiple times per process. Examples: $ git config --get-regexp "^hook\." hook.bar.command=~/bar.sh hook.bar.event=pre-commit # Will run ~/bar.sh, then .git/hooks/pre-commit $ git hook run pre-commit Signed-off-by: Emily Shaffer <emilyshaffer@google.com> Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-02-19hook: add "git hook list" commandEmily Shaffer
The previous commit introduced an ability to run multiple commands for hook events and next commit will introduce the ability to define hooks from configs, in addition to the "traditional" hooks from the hookdir. Introduce a new command "git hook list" to make inspecting hooks easier both for users and for the tests we will add. Further commits will expand on this, e.g. by adding a -z output mode. Signed-off-by: Emily Shaffer <emilyshaffer@google.com> Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-01-15Revert "Merge branch 'ar/run-command-hook'"Junio C Hamano
This reverts commit f406b8955295d01089ba2baf35eceadff2d11cae, reversing changes made to 1627809eeff75e6ec936fc609e7be46d5eb2fa9e. It seems to have caused a few regressions, two of the three known ones we have proposed solutions for. Let's give ourselves a bit more room to maneuver during the pre-release freeze period and restart once the 2.53 ships.
2025-12-28hook: allow overriding the ungroup optionAdrian Ratiu
When calling run_process_parallel() in run_hooks_opt(), the ungroup option is currently hardcoded to .ungroup = 1. This causes problems when ungrouping should be disabled, for example when sideband-reading collated output from child hooks, because sideband-reading and ungrouping are mutually exclusive. Thus a new hook.h option is added to allow overriding. The existing ungroup=1 behavior is preserved in the run_hooks() API and the "hook run" command. We could modify these to take an option if necessary, so I added two code comments there. Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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>
2025-07-23config: drop `git_config()` wrapperPatrick Steinhardt
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()`. All callsites are adjusted so that they use `repo_config(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>
2024-11-26builtin: pass repository to sub commandsKarthik Nayak
In 9b1cb5070f (builtin: add a repository parameter for builtin functions, 2024-09-13) the repository was passed down to all builtin commands. This allowed the repository to be passed down to lower layers without depending on the global `the_repository` variable. Continue this work by also passing down the repository parameter from the command to sub-commands. This will help pass down the repository to other subsystems and cleanup usage of global variables like 'the_repository' and 'the_hash_algo'. Signed-off-by: Karthik Nayak <karthik.188@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-09-13builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.hJohn Cai
Instead of including USE_THE_REPOSITORY_VARIABLE by default on every builtin, remove it from builtin.h and add it to all the builtins that include builtin.h (by definition, that means all builtins/*.c). Also, remove the include statement for repository.h since it gets brought in through builtin.h. The next step will be to migrate each builtin from having to use the_repository. Signed-off-by: John Cai <johncai86@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-09-13builtin: add a repository parameter for builtin functionsJohn Cai
In order to reduce the usage of the global the_repository, add a parameter to builtin functions that will get passed a repository variable. This commit uses UNUSED on most of the builtin functions, as subsequent commits will modify the actual builtins to pass the repository parameter down. Signed-off-by: John Cai <johncai86@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-13hooks: remove implicit dependency on `the_repository`Patrick Steinhardt
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>
2023-12-26treewide: remove unnecessary includes in source filesElijah Newren
Each of these were checked with gcc -E -I. ${SOURCE_FILE} | grep ${HEADER_FILE} to ensure that removing the direct inclusion of the header actually resulted in that header no longer being included at all (i.e. that no other header pulled it in transitively). ...except for a few cases where we verified that although the header was brought in transitively, nothing from it was directly used in that source file. These cases were: * builtin/credential-cache.c * builtin/pull.c * builtin/send-pack.c Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-06-21cache.h: remove this no-longer-used headerElijah Newren
Since this header showed up in some places besides just #include statements, update/clean-up/remove those other places as well. Note that compat/fsmonitor/fsm-path-utils-darwin.c previously got away with violating the rule that all files must start with an include of git-compat-util.h (or a short-list of alternate headers that happen to include it first). This change exposed the violation and caused it to stop building correctly; fix it by having it include git-compat-util.h first, as per policy. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-21treewide: be explicit about dependence on gettext.hElijah Newren
Dozens of files made use of gettext functions, without explicitly including gettext.h. This made it more difficult to find which files could remove a dependence on cache.h. Make C files explicitly include gettext.h if they are using it. However, while compat/fsmonitor/fsm-ipc-darwin.c should also gain an include of gettext.h, it was left out to avoid conflicting with an in-flight topic. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-08hook: support a --to-stdin=<path> optionEmily Shaffer
Expose the "path_to_stdin" API added in the preceding commit in the "git hook run" command. For now we won't be using this command interface outside of the tests, but exposing this functionality makes it easier to test the hook API. The plan is to use this to extend the "sendemail-validate" hook[1][2]. 1. https://lore.kernel.org/git/ad152e25-4061-9955-d3e6-a2c8b1bd24e7@amd.com 2. https://lore.kernel.org/git/20230120012459.920932-1-michael.strawbridge@amd.com Signed-off-by: Emily Shaffer <emilyshaffer@google.com> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-19builtin/hook.c: let parse-options parse subcommandsSZEDER Gábor
'git hook' parses its currently only subcommand with an if statement. parse-options has just learned to parse subcommands, so let's use that facility instead, with the benefits of shorter code, handling missing or unknown subcommands, and listing subcommands for Bash completion. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-07git hook run: add an --ignore-missing flagÆvar Arnfjörð Bjarmason
For certain one-shot hooks we'd like to optimistically run them, and not complain if they don't exist. This was already supported by the underlying hook.c library, but had not been exposed via "git hook run". The command version of this will be used by send-email in a subsequent commit. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Reviewed-by: Emily Shaffer <emilyshaffer@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-07hook: add 'run' subcommandEmily Shaffer
In order to enable hooks to be run as an external process, by a standalone Git command, or by tools which wrap Git, provide an external means to run all configured hook commands for a given hook event. Most of our hooks require more complex functionality than this, but let's start with the bare minimum required to support our simplest hooks. In terms of implementation the usage_with_options() and "goto usage" pattern here mirrors that of builtin/{commit-graph,multi-pack-index}.c. Some of the implementation here, such as a function being named run_hooks_opt() when it's tasked with running one hook, to using the run_processes_parallel_tr2() API to run with jobs=1 is somewhere between a bit odd and and an overkill for the current features of this "hook run" command and the hook.[ch] API. This code will eventually be able to run multiple hooks declared in config in parallel, by starting out with these names and APIs we reduce the later churn of renaming functions, switching from the run_command() to run_processes_parallel_tr2() API etc. Signed-off-by: Emily Shaffer <emilyshaffer@google.com> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Acked-by: Emily Shaffer <emilyshaffer@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>