GIT\-CVSSERVERSection: Git Manual (1)
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NAMEgit-cvsserver - A CVS server emulator for git
export CVS_SERVER=git-cvsserver cvs -d :ext:user@server/path/repo.git co <HEAD_name>
cvspserver stream tcp nowait nobody /usr/bin/git-cvsserver git-cvsserver pserver
git-cvsserver [options] [pserver|server] [<directory> ...]
OPTIONSAll these options obviously only make sense if enforced by the server side. They have been implemented to resemble the git-daemon(1) options as closely as possible.
- Prepend path to requested CVSROOT
- Don't allow recursing into subdirectories
- Don't check for gitcvs.enabled in config. You also have to specify a list of allowed directories (see below) if you want to use this option.
- Print version information and exit
--help, -h, -H
- Print usage information and exit
- You can specify a list of allowed directories. If no directories are given, all are allowed. This is an additional restriction, gitcvs access still needs to be enabled by the gitcvs.enabled config option unless --export-all was given, too.
DESCRIPTIONThis application is a CVS emulation layer for git.
It is highly functional. However, not all methods are implemented, and for those methods that are implemented, not all switches are implemented.
LIMITATIONSCurrently cvsserver works over SSH connections for read/write clients, and over pserver for anonymous CVS access.
CVS clients cannot tag, branch or perform GIT merges.
1.If you are going to offer anonymous CVS access via pserver, add a line in /etc/inetd.conf like
.ft C cvspserver stream tcp nowait nobody git-cvsserver pserver .ft
.ft C cvspserver stream tcp nowait nobody /usr/bin/git-cvsserver git-cvsserver pserver .ft
Note: Newer CVS versions (>= 1.12.11) also support specifying CVS_SERVER directly in CVSROOT like
.ft C cvs -d ":ext;CVS_SERVER=git-cvsserver:user@server/path/repo.git" co <HEAD_name> .ft
2.For each repo that you want accessible from CVS you need to edit config in the repo and add the following section.
.ft C [gitcvs] enabled=1 # optional for debugging logfile=/path/to/logfile .ft
All configuration variables can also be overridden for a specific method of access. Valid method names are "ext" (for SSH access) and "pserver". The following example configuration would disable pserver access while still allowing access over SSH.
.ft C [gitcvs] enabled=0 [gitcvs "ext"] enabled=1 .ft
3.On the client machine you need to set the following variables. CVSROOT should be set as per normal, but the directory should point at the appropriate git repo. For example:
For SSH access, CVS_SERVER should be set to git-cvsserver
.ft C export CVSROOT=:ext:user@server:/var/git/project.git export CVS_SERVER=git-cvsserver .ft
- 4.For SSH clients that will make commits, make sure their .bashrc file sets the GIT_AUTHOR and GIT_COMMITTER variables.
5.Clients should now be able to check out the project. Use the CVS module name to indicate what GIT head you want to check out. Example:
.ft C cvs co -d project-master master .ft
DATABASE BACKENDgit-cvsserver uses one database per git head (i.e. CVS module) to store information about the repository for faster access. The database doesn't contain any persistent data and can be completely regenerated from the git repository at any time. The database needs to be updated (i.e. written to) after every commit.
If the commit is done directly by using git (as opposed to using git-cvsserver) the update will need to happen on the next repository access by git-cvsserver, independent of access method and requested operation.
That means that even if you offer only read access (e.g. by using the pserver method), git-cvsserver should have write access to the database to work reliably (otherwise you need to make sure that the database if up-to-date all the time git-cvsserver is run).
By default it uses SQLite databases in the git directory, named gitcvs.<module_name>.sqlite. Note that the SQLite backend creates temporary files in the same directory as the database file on write so it might not be enough to grant the users using git-cvsserver write access to the database file without granting them write access to the directory, too.
Configuring database backendgit-cvsserver uses the Perl DBI module. Please also read its documentation if changing these variables, especially about DBI->connect().
- Database name. The exact meaning depends on the used database driver, for SQLite this is a filename. Supports variable substitution (see below). May not contain semicolons (;). Default: %Ggitcvs.%m.sqlite
- Used DBI driver. You can specify any available driver for this here, but it might not work. cvsserver is tested with DBD::SQLite, reported to work with DBD::Pg, and reported not to work with DBD::mysql. Please regard this as an experimental feature. May not contain double colons (:). Default: SQLite
- Database user. Only useful if setting dbdriver, since SQLite has no concept of database users. Supports variable substitution (see below).
- Database password. Only useful if setting dbdriver, since SQLite has no concept of database passwords.
In dbdriver and dbuser you can use the following variables:
- git directory name
- git directory name, where all characters except for alpha-numeric ones, ., and - are replaced with _ (this should make it easier to use the directory name in a filename if wanted)
- CVS module/git head name
- access method (one of "ext" or "pserver")
- Name of the user running git-cvsserver. If no name can be determined, the numeric uid is used.
ECLIPSE CVS CLIENT NOTESTo get a checkout with the Eclipse CVS client:
- 1.Select "Create a new project -> From CVS checkout"
- 2.Create a new location. See the notes below for details on how to choose the right protocol.
- 3.Browse the modules available. It will give you a list of the heads in the repository. You will not be able to browse the tree from there. Only the heads.
- 4.Pick HEAD when it asks what branch/tag to check out. Untick the "launch commit wizard" to avoid committing the .project file.
Alternatively, you can just use the non-standard extssh protocol that Eclipse offer. In that case CVS_SERVER is ignored, and you will have to replace the cvs utility on the server with git-cvsserver or manipulate your .bashrc so that calling cvs effectively calls git-cvsserver.
CLIENTS KNOWN TO WORK
- *CVS 1.12.9 on Debian
- *CVS 1.11.17 on MacOSX (from Fink package)
- *Eclipse 3.0, 3.1.2 on MacOSX (see Eclipse CVS Client Notes)
OPERATIONS SUPPORTEDAll the operations required for normal use are supported, including checkout, diff, status, update, log, add, remove, commit. Legacy monitoring operations are not supported (edit, watch and related). Exports and tagging (tags and branches) are not supported at this stage.
The server should set the -k mode to binary when relevant, however, this is not really implemented yet. For now, you can force the server to set -kb for all files by setting the gitcvs.allbinary config variable. In proper GIT tradition, the contents of the files are always respected. No keyword expansion or newline munging is supported.
DEPENDENCIESgit-cvsserver depends on DBD::SQLite.
COPYRIGHT AND AUTHORSThis program is copyright The Open University UK - 2006.
- *Martyn Smith <firstname.lastname@example.org>
- *Martin Langhoff <email@example.com>
DOCUMENTATIONDocumentation by Martyn Smith <firstname.lastname@example.org>, Martin Langhoff <email@example.com>, and Matthias Urlichs <firstname.lastname@example.org>.
GITPart of the git(7) suite
- DATABASE BACKEND
- ECLIPSE CVS CLIENT NOTES
- CLIENTS KNOWN TO WORK
- OPERATIONS SUPPORTED
- COPYRIGHT AND AUTHORS