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Diffstat (limited to 'Documentation/githooks.txt')
| -rw-r--r-- | Documentation/githooks.txt | 252 |
1 files changed, 229 insertions, 23 deletions
diff --git a/Documentation/githooks.txt b/Documentation/githooks.txt index 959044347e..b51959ff94 100644 --- a/Documentation/githooks.txt +++ b/Documentation/githooks.txt @@ -99,6 +99,32 @@ All the `git commit` hooks are invoked with the environment variable `GIT_EDITOR=:` if the command will not bring up an editor to modify the commit message. +The default 'pre-commit' hook, when enabled--and with the +`hooks.allownonascii` config option unset or set to false--prevents +the use of non-ASCII filenames. + +pre-merge-commit +~~~~~~~~~~~~~~~~ + +This hook is invoked by linkgit:git-merge[1], and can be bypassed +with the `--no-verify` option. It takes no parameters, and is +invoked after the merge has been carried out successfully and before +obtaining the proposed commit log message to +make a commit. Exiting with a non-zero status from this script +causes the `git merge` command to abort before creating a commit. + +The default 'pre-merge-commit' hook, when enabled, runs the +'pre-commit' hook, if the latter is enabled. + +This hook is invoked with the environment variable +`GIT_EDITOR=:` if the command will not bring up an editor +to modify the commit message. + +If the merge cannot be carried out automatically, the conflicts +need to be resolved and the result committed separately (see +linkgit:git-merge[1]). At that point, this hook will not be executed, +but the 'pre-commit' hook will, if it is enabled. + prepare-commit-msg ~~~~~~~~~~~~~~~~~~ @@ -112,7 +138,7 @@ given); `template` (if a `-t` option was given or the configuration option `commit.template` is set); `merge` (if the commit is a merge or a `.git/MERGE_MSG` file exists); `squash` (if a `.git/SQUASH_MSG` file exists); or `commit`, followed by -a commit SHA-1 (if a `-c`, `-C` or `--amend` option was given). +a commit object name (if a `-c`, `-C` or `--amend` option was given). If the exit status is non-zero, `git commit` will abort. @@ -138,7 +164,7 @@ can also be used to refuse the commit after inspecting the message file. The default 'commit-msg' hook, when enabled, detects duplicate -"Signed-off-by" lines, and aborts the commit if one is found. +`Signed-off-by` trailers, and aborts the commit if one is found. post-commit ~~~~~~~~~~~ @@ -161,12 +187,15 @@ rebased, and is not set when rebasing the current branch. post-checkout ~~~~~~~~~~~~~ -This hook is invoked when a linkgit:git-checkout[1] is run after having updated the +This hook is invoked when a linkgit:git-checkout[1] or +linkgit:git-switch[1] is run after having updated the worktree. The hook is given three parameters: the ref of the previous HEAD, the ref of the new HEAD (which may or may not have changed), and a flag indicating whether the checkout was a branch checkout (changing branches, flag=1) or a file checkout (retrieving a file from the index, flag=0). -This hook cannot affect the outcome of `git checkout`. +This hook cannot affect the outcome of `git switch` or `git checkout`, +other than that the hook's exit status becomes the exit status of +these two commands. It is also run after linkgit:git-clone[1], unless the `--no-checkout` (`-n`) option is used. The first parameter given to the hook is the null-ref, the second the @@ -202,19 +231,19 @@ named remote is not being used both values will be the same. Information about what is to be pushed is provided on the hook's standard input with lines of the form: - <local ref> SP <local sha1> SP <remote ref> SP <remote sha1> LF + <local ref> SP <local object name> SP <remote ref> SP <remote object name> LF For instance, if the command +git push origin master:foreign+ were run the hook would receive a line like the following: refs/heads/master 67890 refs/heads/foreign 12345 -although the full, 40-character SHA-1s would be supplied. If the foreign ref -does not yet exist the `<remote SHA-1>` will be 40 `0`. If a ref is to be -deleted, the `<local ref>` will be supplied as `(delete)` and the `<local -SHA-1>` will be 40 `0`. If the local commit was specified by something other -than a name which could be expanded (such as `HEAD~`, or a SHA-1) it will be -supplied as it was originally given. +although the full object name would be supplied. If the foreign ref does not +yet exist the `<remote object name>` will be the all-zeroes object name. If a +ref is to be deleted, the `<local ref>` will be supplied as `(delete)` and the +`<local object name>` will be the all-zeroes object name. If the local commit +was specified by something other than a name which could be expanded (such as +`HEAD~`, or an object name) it will be supplied as it was originally given. If this hook exits with a non-zero status, `git push` will abort without pushing anything. Information about why the push is rejected may be sent @@ -239,7 +268,7 @@ input a line of the format: where `<old-value>` is the old object name stored in the ref, `<new-value>` is the new object name to be stored in the ref and `<ref-name>` is the full name of the ref. -When creating a new ref, `<old-value>` is 40 `0`. +When creating a new ref, `<old-value>` is the all-zeroes object name. If the hook exits with non-zero status, none of the refs will be updated. If the hook exits with zero, updating of individual refs can @@ -306,6 +335,68 @@ The default 'update' hook, when enabled--and with `hooks.allowunannotated` config option unset or set to false--prevents unannotated tags to be pushed. +[[proc-receive]] +proc-receive +~~~~~~~~~~~~ + +This hook is invoked by linkgit:git-receive-pack[1]. If the server has +set the multi-valued config variable `receive.procReceiveRefs`, and the +commands sent to 'receive-pack' have matching reference names, these +commands will be executed by this hook, instead of by the internal +`execute_commands()` function. This hook is responsible for updating +the relevant references and reporting the results back to 'receive-pack'. + +This hook executes once for the receive operation. It takes no +arguments, but uses a pkt-line format protocol to communicate with +'receive-pack' to read commands, push-options and send results. In the +following example for the protocol, the letter 'S' stands for +'receive-pack' and the letter 'H' stands for this hook. + + # Version and features negotiation. + S: PKT-LINE(version=1\0push-options atomic...) + S: flush-pkt + H: PKT-LINE(version=1\0push-options...) + H: flush-pkt + + # Send commands from server to the hook. + S: PKT-LINE(<old-oid> <new-oid> <ref>) + S: ... ... + S: flush-pkt + # Send push-options only if the 'push-options' feature is enabled. + S: PKT-LINE(push-option) + S: ... ... + S: flush-pkt + + # Receive result from the hook. + # OK, run this command successfully. + H: PKT-LINE(ok <ref>) + # NO, I reject it. + H: PKT-LINE(ng <ref> <reason>) + # Fall through, let 'receive-pack' to execute it. + H: PKT-LINE(ok <ref>) + H: PKT-LINE(option fall-through) + # OK, but has an alternate reference. The alternate reference name + # and other status can be given in option directives. + H: PKT-LINE(ok <ref>) + H: PKT-LINE(option refname <refname>) + H: PKT-LINE(option old-oid <old-oid>) + H: PKT-LINE(option new-oid <new-oid>) + H: PKT-LINE(option forced-update) + H: ... ... + H: flush-pkt + +Each command for the 'proc-receive' hook may point to a pseudo-reference +and always has a zero-old as its old-oid, while the 'proc-receive' hook +may update an alternate reference and the alternate reference may exist +already with a non-zero old-oid. For this case, this hook will use +"option" directives to report extended attributes for the reference given +by the leading "ok" directive. + +The report of the commands of this hook should have the same order as +the input. The exit status of the 'proc-receive' hook only determines +the success or failure of the group of commands sent to it, unless +atomic push is in use. + [[post-receive]] post-receive ~~~~~~~~~~~~ @@ -377,6 +468,44 @@ Both standard output and standard error output are forwarded to `git send-pack` on the other end, so you can simply `echo` messages for the user. +reference-transaction +~~~~~~~~~~~~~~~~~~~~~ + +This hook is invoked by any Git command that performs reference +updates. It executes whenever a reference transaction is prepared, +committed or aborted and may thus get called multiple times. The hook +does not cover symbolic references (but that may change in the future). + +The hook takes exactly one argument, which is the current state the +given reference transaction is in: + + - "prepared": All reference updates have been queued to the + transaction and references were locked on disk. + + - "committed": The reference transaction was committed and all + references now have their respective new value. + + - "aborted": The reference transaction was aborted, no changes + were performed and the locks have been released. + +For each reference update that was added to the transaction, the hook +receives on standard input a line of the format: + + <old-value> SP <new-value> SP <ref-name> LF + +where `<old-value>` is the old object name passed into the reference +transaction, `<new-value>` is the new object name to be stored in the +ref and `<ref-name>` is the full name of the ref. When force updating +the reference regardless of its current value or when the reference is +to be created anew, `<old-value>` is the all-zeroes object name. To +distinguish these cases, you can inspect the current value of +`<ref-name>` via `git rev-parse`. + +The exit status of the hook is ignored for any state except for the +"prepared" state. In the "prepared" state, a non-zero exit status will +cause the transaction to be aborted. The hook will not be called with +"aborted" state in that case. + push-to-checkout ~~~~~~~~~~~~~~~~ @@ -402,7 +531,8 @@ exit with a zero status. For example, the hook can simply run `git read-tree -u -m HEAD "$1"` in order to emulate `git fetch` that is run in the reverse direction with `git push`, as the two-tree form of `git read-tree -u -m` is -essentially the same as `git checkout` that switches branches while +essentially the same as `git switch` or `git checkout` +that switches branches while keeping the local changes in the working tree that do not interfere with the difference between the branches. @@ -419,15 +549,17 @@ post-rewrite This hook is invoked by commands that rewrite commits (linkgit:git-commit[1] when called with `--amend` and -linkgit:git-rebase[1]; currently `git filter-branch` does 'not' call -it!). Its first argument denotes the command it was invoked by: -currently one of `amend` or `rebase`. Further command-dependent -arguments may be passed in the future. +linkgit:git-rebase[1]; however, full-history (re)writing tools like +linkgit:git-fast-import[1] or +https://github.com/newren/git-filter-repo[git-filter-repo] typically +do not call it!). Its first argument denotes the command it was +invoked by: currently one of `amend` or `rebase`. Further +command-dependent arguments may be passed in the future. The hook receives a list of the rewritten commits on stdin, in the format - <old-sha1> SP <new-sha1> [ SP <extra-info> ] LF + <old-object-name> SP <new-object-name> [ SP <extra-info> ] LF The 'extra-info' is again command-dependent. If it is empty, the preceding SP is also omitted. Currently, no commands pass any @@ -443,7 +575,7 @@ rebase:: For the 'squash' and 'fixup' operation, all commits that were squashed are listed as being rewritten to the squashed commit. This means that there will be several lines sharing the same - 'new-sha1'. + 'new-object-name'. + The commits are guaranteed to be listed in the order that they were processed by rebase. @@ -460,9 +592,16 @@ fsmonitor-watchman ~~~~~~~~~~~~~~~~~~ This hook is invoked when the configuration option `core.fsmonitor` is -set to `.git/hooks/fsmonitor-watchman`. It takes two arguments, a version -(currently 1) and the time in elapsed nanoseconds since midnight, -January 1, 1970. +set to `.git/hooks/fsmonitor-watchman` or `.git/hooks/fsmonitor-watchmanv2` +depending on the version of the hook to use. + +Version 1 takes two arguments, a version (1) and the time in elapsed +nanoseconds since midnight, January 1, 1970. + +Version 2 takes two arguments, a version (2) and a token that is used +for identifying changes since the token. For watchman this would be +a clock id. This version must output to stdout the new token followed +by a NUL before the list of files. The hook should output to stdout the list of all files in the working directory that may have changed since the requested time. The logic @@ -485,12 +624,79 @@ The exit status determines whether git will use the data from the hook to limit its search. On error, it will fall back to verifying all files and folders. +p4-changelist +~~~~~~~~~~~~~ + +This hook is invoked by `git-p4 submit`. + +The `p4-changelist` hook is executed after the changelist +message has been edited by the user. It can be bypassed with the +`--no-verify` option. It takes a single parameter, the name +of the file that holds the proposed changelist text. Exiting +with a non-zero status causes the command to abort. + +The hook is allowed to edit the changelist file and can be used +to normalize the text into some project standard format. It can +also be used to refuse the Submit after inspect the message file. + +Run `git-p4 submit --help` for details. + +p4-prepare-changelist +~~~~~~~~~~~~~~~~~~~~~ + +This hook is invoked by `git-p4 submit`. + +The `p4-prepare-changelist` hook is executed right after preparing +the default changelist message and before the editor is started. +It takes one parameter, the name of the file that contains the +changelist text. Exiting with a non-zero status from the script +will abort the process. + +The purpose of the hook is to edit the message file in place, +and it is not suppressed by the `--no-verify` option. This hook +is called even if `--prepare-p4-only` is set. + +Run `git-p4 submit --help` for details. + +p4-post-changelist +~~~~~~~~~~~~~~~~~~ + +This hook is invoked by `git-p4 submit`. + +The `p4-post-changelist` hook is invoked after the submit has +successfully occurred in P4. It takes no parameters and is meant +primarily for notification and cannot affect the outcome of the +git p4 submit action. + +Run `git-p4 submit --help` for details. + p4-pre-submit ~~~~~~~~~~~~~ This hook is invoked by `git-p4 submit`. It takes no parameters and nothing from standard input. Exiting with non-zero status from this script prevent -`git-p4 submit` from launching. Run `git-p4 submit --help` for details. +`git-p4 submit` from launching. It can be bypassed with the `--no-verify` +command line option. Run `git-p4 submit --help` for details. + + + +post-index-change +~~~~~~~~~~~~~~~~~ + +This hook is invoked when the index is written in read-cache.c +do_write_locked_index. + +The first parameter passed to the hook is the indicator for the +working directory being updated. "1" meaning working directory +was updated or "0" when the working directory was not updated. + +The second parameter passed to the hook is the indicator for whether +or not the index was updated and the skip-worktree bit could have +changed. "1" meaning skip-worktree bits could have been updated +and "0" meaning they were not. + +Only one parameter should be set to "1" when the hook runs. The hook +running passing "1", "1" should not be possible. GIT --- |