6 git-cvsserver - A CVS server emulator for git
14 export CVS_SERVER=git-cvsserver
15 'cvs' -d :ext:user@server/path/repo.git co <HEAD_name>
17 pserver (/etc/inetd.conf):
20 cvspserver stream tcp nowait nobody /usr/bin/git-cvsserver git-cvsserver pserver
25 'git-cvsserver' [options] [pserver|server] [<directory> ...]
30 All these options obviously only make sense if enforced by the server side.
31 They have been implemented to resemble the gitlink:git-daemon[1] options as
35 Prepend 'path' to requested CVSROOT
38 Don't allow recursing into subdirectories
41 Don't check for `gitcvs.enabled` in config. You also have to specify a list
42 of allowed directories (see below) if you want to use this option.
45 Print version information and exit
48 Print usage information and exit
51 You can specify a list of allowed directories. If no directories
52 are given, all are allowed. This is an additional restriction, gitcvs
53 access still needs to be enabled by the `gitcvs.enabled` config option
54 unless '--export-all' was given, too.
60 This application is a CVS emulation layer for git.
62 It is highly functional. However, not all methods are implemented,
63 and for those methods that are implemented,
64 not all switches are implemented.
66 Testing has been done using both the CLI CVS client, and the Eclipse CVS
67 plugin. Most functionality works fine with both of these clients.
72 Currently cvsserver works over SSH connections for read/write clients, and
73 over pserver for anonymous CVS access.
75 CVS clients cannot tag, branch or perform GIT merges.
77 git-cvsserver maps GIT branches to CVS modules. This is very different
78 from what most CVS users would expect since in CVS modules usually represent
79 one or more directories.
84 1. If you are going to offer anonymous CVS access via pserver, add a line in
89 cvspserver stream tcp nowait nobody git-cvsserver pserver
92 Note: Some inetd servers let you specify the name of the executable
93 independently of the value of argv[0] (i.e. the name the program assumes
94 it was executed with). In this case the correct line in /etc/inetd.conf
98 cvspserver stream tcp nowait nobody /usr/bin/git-cvsserver git-cvsserver pserver
101 No special setup is needed for SSH access, other than having GIT tools
102 in the PATH. If you have clients that do not accept the CVS_SERVER
103 environment variable, you can rename git-cvsserver to cvs.
105 Note: Newer CVS versions (>= 1.12.11) also support specifying
106 CVS_SERVER directly in CVSROOT like
109 cvs -d ":ext;CVS_SERVER=git-cvsserver:user@server/path/repo.git" co <HEAD_name>
111 This has the advantage that it will be saved in your 'CVS/Root' files and
112 you don't need to worry about always setting the correct environment
115 2. For each repo that you want accessible from CVS you need to edit config in
116 the repo and add the following section.
122 # optional for debugging
123 logfile=/path/to/logfile
126 Note: you need to ensure each user that is going to invoke git-cvsserver has
127 write access to the log file and to the database (see
128 <<dbbackend,Database Backend>>. If you want to offer write access over
129 SSH, the users of course also need write access to the git repository itself.
131 [[configaccessmethod]]
132 All configuration variables can also be overridden for a specific method of
133 access. Valid method names are "ext" (for SSH access) and "pserver". The
134 following example configuration would disable pserver access while still
135 allowing access over SSH.
144 3. On the client machine you need to set the following variables.
145 CVSROOT should be set as per normal, but the directory should point at the
146 appropriate git repo. For example:
149 For SSH access, CVS_SERVER should be set to git-cvsserver
154 export CVSROOT=:ext:user@server:/var/git/project.git
155 export CVS_SERVER=git-cvsserver
158 4. For SSH clients that will make commits, make sure their .bashrc file
159 sets the GIT_AUTHOR and GIT_COMMITTER variables.
161 5. Clients should now be able to check out the project. Use the CVS 'module'
162 name to indicate what GIT 'head' you want to check out. Example:
165 cvs co -d project-master master
172 git-cvsserver uses one database per git head (i.e. CVS module) to
173 store information about the repository for faster access. The
174 database doesn't contain any persistent data and can be completely
175 regenerated from the git repository at any time. The database
176 needs to be updated (i.e. written to) after every commit.
178 If the commit is done directly by using git (as opposed to
179 using git-cvsserver) the update will need to happen on the
180 next repository access by git-cvsserver, independent of
181 access method and requested operation.
183 That means that even if you offer only read access (e.g. by using
184 the pserver method), git-cvsserver should have write access to
185 the database to work reliably (otherwise you need to make sure
186 that the database if up-to-date all the time git-cvsserver is run).
188 By default it uses SQLite databases in the git directory, named
189 `gitcvs.<module_name>.sqlite`. Note that the SQLite backend creates
190 temporary files in the same directory as the database file on
191 write so it might not be enough to grant the users using
192 git-cvsserver write access to the database file without granting
193 them write access to the directory, too.
195 You can configure the database backend with the following
196 configuration variables:
198 Configuring database backend
199 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
201 git-cvsserver uses the Perl DBI module. Please also read
202 its documentation if changing these variables, especially
203 about `DBI->connect()`.
206 Database name. The exact meaning depends on the
207 used database driver, for SQLite this is a filename.
208 Supports variable substitution (see below). May
209 not contain semicolons (`;`).
210 Default: '%Ggitcvs.%m.sqlite'
213 Used DBI driver. You can specify any available driver
214 for this here, but it might not work. cvsserver is tested
215 with 'DBD::SQLite', reported to work with
216 'DBD::Pg', and reported *not* to work with 'DBD::mysql'.
217 Please regard this as an experimental feature. May not
218 contain double colons (`:`).
222 Database user. Only useful if setting `dbdriver`, since
223 SQLite has no concept of database users. Supports variable
224 substitution (see below).
227 Database password. Only useful if setting `dbdriver`, since
228 SQLite has no concept of database passwords.
230 All variables can also be set per access method, see <<configaccessmethod,above>>.
232 Variable substitution
233 ^^^^^^^^^^^^^^^^^^^^^
234 In `dbdriver` and `dbuser` you can use the following variables:
239 git directory name, where all characters except for
240 alpha-numeric ones, `.`, and `-` are replaced with
241 `_` (this should make it easier to use the directory
242 name in a filename if wanted)
244 CVS module/git head name
246 access method (one of "ext" or "pserver")
248 Name of the user running git-cvsserver.
249 If no name can be determined, the
252 Eclipse CVS Client Notes
253 ------------------------
255 To get a checkout with the Eclipse CVS client:
257 1. Select "Create a new project -> From CVS checkout"
258 2. Create a new location. See the notes below for details on how to choose the
260 3. Browse the 'modules' available. It will give you a list of the heads in
261 the repository. You will not be able to browse the tree from there. Only
263 4. Pick 'HEAD' when it asks what branch/tag to check out. Untick the
264 "launch commit wizard" to avoid committing the .project file.
266 Protocol notes: If you are using anonymous access via pserver, just select that.
267 Those using SSH access should choose the 'ext' protocol, and configure 'ext'
268 access on the Preferences->Team->CVS->ExtConnection pane. Set CVS_SERVER to
269 'git-cvsserver'. Note that password support is not good when using 'ext',
270 you will definitely want to have SSH keys setup.
272 Alternatively, you can just use the non-standard extssh protocol that Eclipse
273 offer. In that case CVS_SERVER is ignored, and you will have to replace
274 the cvs utility on the server with git-cvsserver or manipulate your `.bashrc`
275 so that calling 'cvs' effectively calls git-cvsserver.
277 Clients known to work
278 ---------------------
280 - CVS 1.12.9 on Debian
281 - CVS 1.11.17 on MacOSX (from Fink package)
282 - Eclipse 3.0, 3.1.2 on MacOSX (see Eclipse CVS Client Notes)
288 All the operations required for normal use are supported, including
289 checkout, diff, status, update, log, add, remove, commit.
290 Legacy monitoring operations are not supported (edit, watch and related).
291 Exports and tagging (tags and branches) are not supported at this stage.
293 The server should set the '-k' mode to binary when relevant, however,
294 this is not really implemented yet. For now, you can force the server
295 to set '-kb' for all files by setting the `gitcvs.allbinary` config
296 variable. In proper GIT tradition, the contents of the files are
297 always respected. No keyword expansion or newline munging is supported.
302 git-cvsserver depends on DBD::SQLite.
304 Copyright and Authors
305 ---------------------
307 This program is copyright The Open University UK - 2006.
311 - Martyn Smith <martyn@catalyst.net.nz>
312 - Martin Langhoff <martin@catalyst.net.nz>
314 with ideas and patches from participants of the git-list <git@vger.kernel.org>.
318 Documentation by Martyn Smith <martyn@catalyst.net.nz>, Martin Langhoff <martin@catalyst.net.nz>, and Matthias Urlichs <smurf@smurf.noris.de>.
322 Part of the gitlink:git[7] suite