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917e080249
Convert the invocation of the 'post-rewrite' hook run by 'git am' to use the hook.h library. To do this we need to add a "path_to_stdin" member to "struct run_hooks_opt". In our API this is supported by asking for a file path, rather than by reading stdin. Reading directly from stdin would involve caching the entire stdin (to memory or to disk) once the hook API is made to support "jobs" larger than 1, along with support for executing N hooks at a time (i.e. the upcoming config-based hooks). 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>
90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
#ifndef HOOK_H
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#define HOOK_H
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#include "strvec.h"
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struct run_hooks_opt
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{
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/* Environment vars to be set for each hook */
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struct strvec env;
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/* Args to be passed to each hook */
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struct strvec args;
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/* Emit an error if the hook is missing */
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unsigned int error_if_missing:1;
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/**
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* An optional initial working directory for the hook,
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* translates to "struct child_process"'s "dir" member.
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*/
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const char *dir;
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/**
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* A pointer which if provided will be set to 1 or 0 depending
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* on if a hook was started, regardless of whether or not that
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* was successful. I.e. if the underlying start_command() was
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* successful this will be set to 1.
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*
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* Used for avoiding TOCTOU races in code that would otherwise
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* call hook_exist() after a "maybe hook run" to see if a hook
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* was invoked.
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*/
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int *invoked_hook;
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/**
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* Path to file which should be piped to stdin for each hook.
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*/
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const char *path_to_stdin;
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};
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#define RUN_HOOKS_OPT_INIT { \
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.env = STRVEC_INIT, \
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.args = STRVEC_INIT, \
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}
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struct hook_cb_data {
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/* rc reflects the cumulative failure state */
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int rc;
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const char *hook_name;
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const char *hook_path;
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struct run_hooks_opt *options;
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};
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/*
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* Returns the path to the hook file, or NULL if the hook is missing
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* or disabled. Note that this points to static storage that will be
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* overwritten by further calls to find_hook and run_hook_*.
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*/
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const char *find_hook(const char *name);
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/**
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* A boolean version of find_hook()
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*/
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int hook_exists(const char *hookname);
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/**
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* Takes a `hook_name`, resolves it to a path with find_hook(), and
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* runs the hook for you with the options specified in "struct
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* run_hooks opt". Will free memory associated with the "struct run_hooks_opt".
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*
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* Returns the status code of the run hook, or a negative value on
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* error().
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*/
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int run_hooks_opt(const char *hook_name, struct run_hooks_opt *options);
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/**
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* A wrapper for run_hooks_opt() which provides a dummy "struct
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* run_hooks_opt" initialized with "RUN_HOOKS_OPT_INIT".
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*/
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int run_hooks(const char *hook_name);
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/**
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* Like run_hooks(), a wrapper for run_hooks_opt().
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*
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* In addition to the wrapping behavior provided by run_hooks(), this
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* wrapper takes a list of strings terminated by a NULL
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* argument. These things will be used as positional arguments to the
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* hook. This function behaves like the old run_hook_le() API.
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*/
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int run_hooks_l(const char *hook_name, ...);
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#endif
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