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129 lines
4.7 KiB
129 lines
4.7 KiB
GIT repository layout |
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===================== |
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v0.99.5, Sep 2005 |
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You may find these things in your git repository (`.git` |
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directory for a repository associated with your working tree, or |
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`'project'.git` directory for a public 'naked' repository). |
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objects:: |
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Object store associated with this repository. Usually |
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an object store is self sufficient (i.e. all the objects |
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that are referred to by an object found in it are also |
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found in it), but there are couple of ways to violate |
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it. |
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+ |
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. You could populate the repository by running a commit walker |
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without `-a` option. Depending on which options are given, you |
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could have only commit objects without associated blobs and |
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trees this way, for example. A repository with this kind of |
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incomplete object store is not suitable to be published to the |
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outside world but sometimes useful for private repository. |
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. You can be using `objects/info/alternates` mechanism, or |
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`$GIT_ALTERNATE_OBJECT_DIRECTORIES` mechanism to 'borrow' |
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objects from other object stores. A repository with this kind |
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of incompete object store is not suitable to be published for |
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use with dumb transports but otherwise is OK as long as |
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`objects/info/alternates` points at the right object stores |
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it borrows from. |
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objects/[0-9a-f][0-9a-f]:: |
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Traditionally, each object is stored in its own file. |
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They are split into 256 subdirectories using the first |
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two letters from its object name to keep the number of |
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directory entries `objects` directory itself needs to |
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hold. Objects found here are often called 'unpacked' |
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objects. |
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objects/pack:: |
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Packs (files that store many object in compressed form, |
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along with index files to allow them to be randomly |
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accessed) are found in this directory. |
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objects/info:: |
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Additional information about the object store is |
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recorded in this directory. |
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objects/info/packs:: |
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This file is to help dumb transports discover what packs |
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are available in this object store. Whenever a pack is |
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added or removed, `git update-server-info` should be run |
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to keep this file up-to-date if the repository is |
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published for dumb transports. `git repack` does this |
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by default. |
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objects/info/alternates:: |
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This file records absolute filesystem paths of alternate |
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object stores that this object store borrows objects |
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from, one pathname per line. |
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refs:: |
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References are stored in subdirectories of this |
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directory. The `git prune` command knows to keep |
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objects reachable from refs found in this directory and |
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its subdirectories. |
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refs/heads/`name`:: |
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records tip-of-the-tree commit objects of branch `name` |
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refs/tags/`name`:: |
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records any object name (not necessarily a commit |
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object, or a tag object that points at a commit object). |
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HEAD:: |
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A symlink of the form `refs/heads/'name'` to point at |
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the current branch, if exists. It does not mean much if |
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the repository is not associated with any working tree |
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(i.e. 'naked' repository), but a valid git repository |
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*must* have such a symlink here. It is legal if the |
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named branch 'name' does not (yet) exist. |
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branches:: |
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A slightly deprecated way to store shorthands to be used |
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to specify URL to `git fetch`, `git pull` and `git push` |
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commands is to store a file in `branches/'name'` and |
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give 'name' to these commands in place of 'repository' |
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argument. |
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hooks:: |
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Hooks are customization scripts used by various git |
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commands. A handful of sample hooks are installed when |
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`git init-db` is run, but all of them are disabled by |
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default. To enable, they need to be made executable. |
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index:: |
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The current index file for the repository. It is |
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usually not found in a naked repository. |
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info:: |
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Additional information about the repository is recorded |
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in this directory. |
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info/refs:: |
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This file is to help dumb transports to discover what |
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refs are available in this repository. Whenever you |
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create/delete a new branch or a new tag, `git |
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update-server-info` should be run to keep this file |
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up-to-date if the repository is published for dumb |
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transports. The `git-receive-pack` command, which is |
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run on a remote repository when you `git push` into it, |
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runs `hooks/update` hook to help you achive this. |
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info/grafts:: |
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This file records fake commit ancestry information, to |
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pretend the set of parents a commit has is different |
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from how the commit was actually created. One record |
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per line describes a commit and its fake parents by |
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listing their 40-byte hexadecimal object names separated |
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by a space and terminated by a newline. |
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info/exclude:: |
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This file, by convention among Porcelains, stores the |
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exclude pattern list. `git status` looks at it, but |
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otherwise it is not looked at by any of the core GIT |
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commands. |
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remotes:: |
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Stores shorthands to be used to give URL and default |
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refnames to interact with remote repository to `git |
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fetch`, `git pull` and `git push` commands.
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