man1/git-daemon.1

'\" t
.\"     Title: git-daemon
.\"    Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author]
.\" Generator: DocBook XSL Stylesheets v1.79.2 <http://docbook.sf.net/>
.\"      Date: 2025-10-07
.\"    Manual: Git Manual
.\"    Source: Git 2.51.0.463.g79cf913ea9
.\"  Language: English
.\"
.TH "GIT\-DAEMON" "1" "2025-10-07" "Git 2\&.51\&.0\&.463\&.g79cf91" "Git Manual"
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.SH "NAME"
git-daemon \- A really simple server for Git repositories
.SH "SYNOPSIS"
.sp
.nf
\fBgit\fR \fBdaemon\fR [\fB\-\-verbose\fR] [\fB\-\-syslog\fR] [\fB\-\-export\-all\fR]
	   [\fB\-\-timeout=\fR\fI<n>\fR] [\fB\-\-init\-timeout=\fR\fI<n>\fR] [\fB\-\-max\-connections=\fR\fI<n>\fR]
	   [\fB\-\-strict\-paths\fR] [\fB\-\-base\-path=\fR\fI<path>\fR] [\fB\-\-base\-path\-relaxed\fR]
	   [\fB\-\-user\-path\fR | \fB\-\-user\-path=\fR\fI<path>\fR]
	   [\fB\-\-interpolated\-path=\fR\fI<pathtemplate>\fR]
	   [\fB\-\-reuseaddr\fR] [\fB\-\-detach\fR] [\fB\-\-pid\-file=\fR\fI<file>\fR]
	   [\fB\-\-enable=\fR\fI<service>\fR] [\fB\-\-disable=\fR\fI<service>\fR]
	   [\fB\-\-allow\-override=\fR\fI<service>\fR] [\fB\-\-forbid\-override=\fR\fI<service>\fR]
	   [\fB\-\-access\-hook=\fR\fI<path>\fR] [\fB\-\-\fR[\fBno\-\fR]\fBinformative\-errors\fR]
	   [\fB\-\-inetd\fR |
	     [\fB\-\-listen=\fR\fI<host\-or\-ipaddr>\fR] [\fB\-\-port=\fR\fI<n>\fR]
	     [\fB\-\-user=\fR\fI<user>\fR [\fB\-\-group=\fR\fI<group>\fR]]]
	   [\fB\-\-log\-destination=\fR(\fBstderr\fR|\fBsyslog\fR|\fBnone\fR)]
	   [\fI<directory>\fR\&...\:]
.fi
.SH "DESCRIPTION"
.sp
A really simple TCP Git daemon that normally listens on port "DEFAULT_GIT_PORT" aka 9418\&. It waits for a connection asking for a service, and will serve that service if it is enabled\&.
.sp
It verifies that the directory has the magic file "git\-daemon\-export\-ok", and it will refuse to export any Git directory that hasn\(cqt explicitly been marked for export this way (unless the \fB\-\-export\-all\fR parameter is specified)\&. If you pass some directory paths as \fBgit\fR \fBdaemon\fR arguments, the offers are limited to repositories within those directories\&.
.sp
By default, only \fBupload\-pack\fR service is enabled, which serves \fBgit\fR \fBfetch\-pack\fR and \fBgit\fR \fBls\-remote\fR clients, which are invoked from \fBgit\fR \fBfetch\fR, \fBgit\fR \fBpull\fR, and \fBgit\fR \fBclone\fR\&.
.sp
This is ideally suited for read\-only updates, i\&.e\&., pulling from Git repositories\&.
.sp
An \fBupload\-archive\fR also exists to serve \fBgit\fR \fBarchive\fR\&.
.SH "OPTIONS"
.PP
\fB\-\-strict\-paths\fR
.RS 4
Match paths exactly (i\&.e\&. don\(cqt allow "/foo/repo" when the real path is "/foo/repo\&.git" or "/foo/repo/\&.git") and don\(cqt do user\-relative paths\&.
\fBgit\fR
\fBdaemon\fR
will refuse to start when this option is enabled and no directory arguments are provided\&.
.RE
.PP
\fB\-\-base\-path=\fR\fI<path>\fR
.RS 4
Remap all the path requests as relative to the given path\&. This is sort of "Git root" \- if you run
\fBgit\fR
\fBdaemon\fR
with
\fB\-\-base\-path=/srv/git\fR
on
\fBexample\&.com\fR, then if you later try to pull from
\fBgit://example\&.com/hello\&.git\fR,
\fBgit\fR
\fBdaemon\fR
will interpret the path as
\fB/srv/git/hello\&.git\fR\&.
.RE
.PP
\fB\-\-base\-path\-relaxed\fR
.RS 4
If
\fB\-\-base\-path\fR
is enabled and repo lookup fails, with this option
\fBgit\fR
\fBdaemon\fR
will attempt to lookup without prefixing the base path\&. This is useful for switching to
\fB\-\-base\-path\fR
usage, while still allowing the old paths\&.
.RE
.PP
\fB\-\-interpolated\-path=\fR\fI<pathtemplate>\fR
.RS 4
To support virtual hosting, an interpolated path template can be used to dynamically construct alternate paths\&. The template supports
\fB%H\fR
for the target hostname as supplied by the client but converted to all lowercase,
\fB%CH\fR
for the canonical hostname,
\fB%IP\fR
for the server\(cqs IP address,
\fB%P\fR
for the port number, and
\fB%D\fR
for the absolute path of the named repository\&. After interpolation, the path is validated against the directory list\&.
.RE
.PP
\fB\-\-export\-all\fR
.RS 4
Allow pulling from all directories that look like Git repositories (have the
\fIobjects\fR
and
\fIrefs\fR
subdirectories), even if they do not have the
\fBgit\-daemon\-export\-ok\fR
file\&.
.RE
.PP
\fB\-\-inetd\fR
.RS 4
Have the server run as an inetd service\&. Implies
\fB\-\-syslog\fR
(may be overridden with
\fB\-\-log\-destination=\fR)\&. Incompatible with
\fB\-\-detach\fR,
\fB\-\-port\fR,
\fB\-\-listen\fR,
\fB\-\-user\fR
and
\fB\-\-group\fR
options\&.
.RE
.PP
\fB\-\-listen=\fR\fI<host\-or\-ipaddr>\fR
.RS 4
Listen on a specific IP address or hostname\&. IP addresses can be either an IPv4 address or an IPv6 address if supported\&. If IPv6 is not supported, then
\fB\-\-listen=\fR\fI<hostname>\fR
is also not supported and
\fB\-\-listen\fR
must be given an IPv4 address\&. Can be given more than once\&. Incompatible with
\fB\-\-inetd\fR
option\&.
.RE
.PP
\fB\-\-port=\fR\fI<n>\fR
.RS 4
Listen on an alternative port\&. Incompatible with
\fB\-\-inetd\fR
option\&.
.RE
.PP
\fB\-\-init\-timeout=\fR\fI<n>\fR
.RS 4
Timeout (in seconds) between the moment the connection is established and the client request is received (typically a rather low value, since that should be basically immediate)\&.
.RE
.PP
\fB\-\-timeout=\fR\fI<n>\fR
.RS 4
Timeout (in seconds) for specific client sub\-requests\&. This includes the time it takes for the server to process the sub\-request and the time spent waiting for the next client\(cqs request\&.
.RE
.PP
\fB\-\-max\-connections=\fR\fI<n>\fR
.RS 4
Maximum number of concurrent clients, defaults to 32\&. Set it to zero for no limit\&.
.RE
.PP
\fB\-\-syslog\fR
.RS 4
Short for
\fB\-\-log\-destination=syslog\fR\&.
.RE
.PP
\fB\-\-log\-destination=\fR\fI<destination>\fR
.RS 4
Send log messages to the specified destination\&. Note that this option does not imply
\fB\-\-verbose\fR, thus by default only error conditions will be logged\&. The
\fI<destination>\fR
must be one of:
.PP
\fBstderr\fR
.RS 4
Write to standard error\&. Note that if
\fB\-\-detach\fR
is specified, the process disconnects from the real standard error, making this destination effectively equivalent to
\fBnone\fR\&.
.RE
.PP
\fBsyslog\fR
.RS 4
Write to syslog, using the
\fBgit\-daemon\fR
identifier\&.
.RE
.PP
\fBnone\fR
.RS 4
Disable all logging\&.
.RE
.sp
The default destination is
\fBsyslog\fR
if
\fB\-\-inetd\fR
or
\fB\-\-detach\fR
is specified, otherwise
\fBstderr\fR\&.
.RE
.PP
\fB\-\-user\-path\fR, \fB\-\-user\-path=\fR\fI<path>\fR
.RS 4
Allow ~user notation to be used in requests\&. When specified with no parameter, a request to git://host/~alice/foo is taken as a request to access
\fIfoo\fR
repository in the home directory of user
\fBalice\fR\&. If
\fB\-\-user\-path=\fR\fI<path>\fR
is specified, the same request is taken as a request to access
\fI<path>\fR\fB/foo\fR
repository in the home directory of user
\fBalice\fR\&.
.RE
.PP
\fB\-\-verbose\fR
.RS 4
Log details about the incoming connections and requested files\&.
.RE
.PP
\fB\-\-reuseaddr\fR
.RS 4
Use
\fBSO_REUSEADDR\fR
when binding the listening socket\&. This allows the server to restart without waiting for old connections to time out\&.
.RE
.PP
\fB\-\-detach\fR
.RS 4
Detach from the shell\&. Implies
\fB\-\-syslog\fR\&.
.RE
.PP
\fB\-\-pid\-file=\fR\fI<file>\fR
.RS 4
Save the process id in
\fI<file>\fR\&. Ignored when the daemon is run under
\fB\-\-inetd\fR\&.
.RE
.PP
\fB\-\-user=\fR\fI<user>\fR, \fB\-\-group=\fR\fI<group>\fR
.RS 4
Change daemon\(cqs uid and gid before entering the service loop\&. When only
\fB\-\-user\fR
is given without
\fB\-\-group\fR, the primary group ID for the user is used\&. The values of the option are given to
\fBgetpwnam\fR(\fB3\fR) and
\fBgetgrnam\fR(\fB3\fR) and numeric IDs are not supported\&.
.sp
Giving these options is an error when used with
\fB\-\-inetd\fR; use the facility of inet daemon to achieve the same before spawning
\fBgit\fR
\fBdaemon\fR
if needed\&.
.sp
Like many programs that switch user id, the daemon does not reset environment variables such as
\fBHOME\fR
when it runs git programs, e\&.g\&.
\fBupload\-pack\fR
and
\fBreceive\-pack\fR\&. When using this option, you may also want to set and export
\fBHOME\fR
to point at the home directory of
\fI<user>\fR
before starting the daemon, and make sure any Git configuration files in that directory are readable by
\fI<user>\fR\&.
.RE
.PP
\fB\-\-enable=\fR\fI<service>\fR, \fB\-\-disable=\fR\fI<service>\fR
.RS 4
Enable/disable the service site\-wide per default\&. Note that a service disabled site\-wide can still be enabled per repository if it is marked overridable and the repository enables the service with a configuration item\&.
.RE
.PP
\fB\-\-allow\-override=\fR\fI<service>\fR, \fB\-\-forbid\-override=\fR\fI<service>\fR
.RS 4
Allow/forbid overriding the site\-wide default with per repository configuration\&. By default, all the services may be overridden\&.
.RE
.PP
\fB\-\-informative\-errors\fR, \fB\-\-no\-informative\-errors\fR
.RS 4
When informative errors are turned on, git\-daemon will report more verbose errors to the client, differentiating conditions like "no such repository" from "repository not exported"\&. This is more convenient for clients, but may leak information about the existence of unexported repositories\&. When informative errors are not enabled, all errors report "access denied" to the client\&. The default is
\fB\-\-no\-informative\-errors\fR\&.
.RE
.PP
\fB\-\-access\-hook=\fR\fI<path>\fR
.RS 4
Every time a client connects, first run an external command specified by the <path> with service name (e\&.g\&. "upload\-pack"), path to the repository, hostname (\fB%H\fR), canonical hostname (\fB%CH\fR), IP address (\fB%IP\fR), and TCP port (\fB%P\fR) as its command\-line arguments\&. The external command can decide to decline the service by exiting with a non\-zero status (or to allow it by exiting with a zero status)\&. It can also look at the $REMOTE_ADDR and
\fB$REMOTE_PORT\fR
environment variables to learn about the requestor when making this decision\&.
.sp
The external command can optionally write a single line to its standard output to be sent to the requestor as an error message when it declines the service\&.
.RE
.PP
\fI<directory>\fR
.RS 4
The remaining arguments provide a list of directories\&. If any directories are specified, then the
\fBgit\-daemon\fR
process will serve a requested directory only if it is contained in one of these directories\&. If
\fB\-\-strict\-paths\fR
is specified, then the requested directory must match one of these directories exactly\&.
.RE
.SH "SERVICES"
.sp
These services can be globally enabled/disabled using the command\-line options of this command\&. If finer\-grained control is desired (e\&.g\&. to allow \fBgit\fR \fBarchive\fR to be run against only in a few selected repositories the daemon serves), the per\-repository configuration file can be used to enable or disable them\&.
.PP
upload\-pack
.RS 4
This serves
\fBgit\fR
\fBfetch\-pack\fR
and
\fBgit\fR
\fBls\-remote\fR
clients\&. It is enabled by default, but a repository can disable it by setting
\fBdaemon\&.uploadpack\fR
configuration item to
\fBfalse\fR\&.
.RE
.PP
upload\-archive
.RS 4
This serves
\fBgit\fR
\fBarchive\fR
\fB\-\-remote\fR\&. It is disabled by default, but a repository can enable it by setting
\fBdaemon\&.uploadarch\fR
configuration item to
\fBtrue\fR\&.
.RE
.PP
receive\-pack
.RS 4
This serves
\fBgit\fR
\fBsend\-pack\fR
clients, allowing anonymous push\&. It is disabled by default, as there is
\fIno\fR
authentication in the protocol (in other words, anybody can push anything into the repository, including removal of refs)\&. This is solely meant for a closed LAN setting where everybody is friendly\&. This service can be enabled by setting
\fBdaemon\&.receivepack\fR
configuration item to
\fBtrue\fR\&.
.RE
.SH "EXAMPLES"
.PP
We assume the following in /etc/services
.RS 4
.sp
.if n \{\
.RS 4
.\}
.nf
$ grep 9418 /etc/services
git             9418/tcp                # Git Version Control System
.fi
.if n \{\
.RE
.\}
.RE
.PP
\fIgit daemon\fR as inetd server
.RS 4
To set up
\fIgit daemon\fR
as an inetd service that handles any repository within
\fB/pub/foo\fR
or
\fB/pub/bar\fR, place an entry like the following into
\fB/etc/inetd\fR
all on one line:
.sp
.if n \{\
.RS 4
.\}
.nf
        git stream tcp nowait nobody  /usr/bin/git
                git daemon \-\-inetd \-\-verbose \-\-export\-all
                /pub/foo /pub/bar
.fi
.if n \{\
.RE
.\}
.RE
.PP
\fIgit daemon\fR as inetd server for virtual hosts
.RS 4
To set up
\fIgit daemon\fR
as an inetd service that handles repositories for different virtual hosts,
\fBwww\&.example\&.com\fR
and
\fBwww\&.example\&.org\fR, place an entry like the following into
\fB/etc/inetd\fR
all on one line:
.sp
.if n \{\
.RS 4
.\}
.nf
        git stream tcp nowait nobody /usr/bin/git
                git daemon \-\-inetd \-\-verbose \-\-export\-all
                \-\-interpolated\-path=/pub/%H%D
                /pub/www\&.example\&.org/software
                /pub/www\&.example\&.com/software
                /software
.fi
.if n \{\
.RE
.\}
.sp
In this example, the root\-level directory
\fB/pub\fR
will contain a subdirectory for each virtual host name supported\&. Further, both hosts advertise repositories simply as
\fBgit://www\&.example\&.com/software/repo\&.git\fR\&. For pre\-1\&.4\&.0 clients, a symlink from
\fB/software\fR
into the appropriate default repository could be made as well\&.
.RE
.PP
\fIgit daemon\fR as regular daemon for virtual hosts
.RS 4
To set up
\fBgit\fR
\fBdaemon\fR
as a regular, non\-inetd service that handles repositories for multiple virtual hosts based on their IP addresses, start the daemon like this:
.sp
.if n \{\
.RS 4
.\}
.nf
        git daemon \-\-verbose \-\-export\-all
                \-\-interpolated\-path=/pub/%IP/%D
                /pub/192\&.168\&.1\&.200/software
                /pub/10\&.10\&.220\&.23/software
.fi
.if n \{\
.RE
.\}
.sp
In this example, the root\-level directory
\fB/pub\fR
will contain a subdirectory for each virtual host IP address supported\&. Repositories can still be accessed by hostname though, assuming they correspond to these IP addresses\&.
.RE
.PP
selectively enable/disable services per repository
.RS 4
To enable
\fBgit\fR
\fBarchive\fR
\fB\-\-remote\fR
and disable
\fBgit\fR
\fBfetch\fR
against a repository, have the following in the configuration file in the repository (that is the file
\fIconfig\fR
next to
\fBHEAD\fR,
\fIrefs\fR
and
\fIobjects\fR)\&.
.sp
.if n \{\
.RS 4
.\}
.nf
        [daemon]
                uploadpack = false
                uploadarch = true
.fi
.if n \{\
.RE
.\}
.RE
.SH "ENVIRONMENT"
.sp
\fBgit\fR \fBdaemon\fR will set \fBREMOTE_ADDR\fR to the IP address of the client that connected to it, if the IP address is available\&. \fBREMOTE_ADDR\fR will be available in the environment of hooks called when services are performed\&.
.SH "GIT"
.sp
Part of the \fBgit\fR(1) suite