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rootd - The ROOT file server daemon
manual page documents briefly the rootd program.
rootd is a ROOT remote
file server daemon.
This small server is started either by inetd(8) (or
xinetd(8)) when a client requests a connection to a rootd server or by
hand (i.e. from the command line). The rootd server works with the ROOT TNetFile,
TFTP and TNetSystem classes. It allows access to remote directories and
ROOT files in either read or write mode from any ROOT interactive session.
By default rootd listens on port 1094, assigned to it by IANA.
To run rootd via inetd(8) or xinetd(8) the port 1094 must be
assigned to rootd in /etc/services; the following line should be added,
if not present:
If the system uses inetd, add the following line to /etc/inetd.conf:
rootd stream tcp nowait root <bindir>/rootd rootd -i
where <bindir> is the directory you have installed rootd in.
daemon must re-read its configuration file to become aware of the new service.
This can be done either by killing and restarting it manually
kill -HUP <pid inetd>
or, if SYSV init(8) scripts are used, by restarting it, e.g.
If the system uses xinetd(8) instead, a file named ’rootd’ should be created
under /etc/xinetd.d with content:
# default: off
# description: The rootd daemon
disable = no
flags = REUSE
socket_type = stream
wait = no
user = root
server = <bindir>/rootd
server_args = -i
where, again, <bindir> is the directory you have installed rootd in.
xinetd(8) daemon must be restarted:
/sbin/service xinetd restart
If you installed ROOT using some pre-compiled package (for example a Redhat
Linux or a Debian GNU/Linux package), this may already be done for you.
The above configuration examples start the daemon with superuser privileges.
Please refer to the inetd(8) or xinetd(8) documentation for ways of limiting
You can also start rootd by hand running
directly under your private account (no root system privileges needed).
For example to start rootd listening on port 5151 just type:
rootd -p 5151
Notice: no & is needed rootd will go in background by itself.
rootd can also be configured for anonymous usage (like anonymous
ftp). To setup rootd to accept anonymous logins do the following (while
being logged in as root):
- Add the following line to /etc/passwd:
- where you may modify the uid, gid (71, 72) and the home directory to
- Add the following line to /etc/group:
- where the gid must match the gid in
- Create the directories:
chmod 777 /var/spool/rootd/tmp
- /var/spool/rootd must match the rootd home directory as specified
in the rootd /etc/passwd entry.
- To make writable directories for anonymous
do, for example:
chown rootd:rootd /var/spool/rootd/pub
- That’s all.
If you installed ROOT using some pre-compiled package (for example
a Redhat Linux or a Debian GNU/Linux package), this may already be done
system using shadow passwords, full access to the password field of the
user information structure requires special privileges; this is typically
granted if rootd is started by inetd(8) or xinetd(8), as the in above examples.
If the daemon is started in unprivileged mode, either from a regular account
or by (x)inetd with reduced privileges, password-based authentication require
users to create a file $HOME/.rootdpass containing an encrypted password
(using crypt(3)). The system tests the existence of this file before checking
the system password files. An encrypted password can be created in the following
- You can login to an anonymous server either
with the names anonymous or rootd.
- The passwd should be of type firstname.lastname@example.org
Only the @ is enforced for the time being.
- In anonymous mode the top
of the file tree is set to the rootd home directory, therefore only files
below the home directory can be accessed.
- Anonymous mode only works when
the server is started via inetd(8) or xinetd(8).
perl -e ’$pw = crypt("<secretpasswd>","salt"); print "$pw0’
storing the output string in $HOME/.rootdpass .
If the $HOME/.rootdpass does
not exists and the system password file cannot be accessed, rootd attempts
to run the authentication via an sshd(8) daemon.
root(1), proofd(1), system.rootdaemonrc(1)
- -b <tcpwindowsize>
- specifies the tcp window size in bytes (e.g. see http://www.psc.edu/networking/perf_tune.html).
Default is 65535. Only change default for pipes with a high bandwidth*delay
- -d <level>
- level of debug info written to syslogd 0 = no debug (default),
1 = minimum, 2 = medium, 3 = maximum.
- -D <rootdaemonrc>
- read access rules
from file <rootdaemonrc>. By default <root_etc_dir>/system.rootdaemonrc is used
for access rules; for privately started daemons $HOME/.rootdaemonrc (if
present) is read first.
- run in the foreground (output on the window);
useful for debugging purposes.
- indicates that rootd was started by inetd(8)
- do not require client authentication
- specifies the port number to listen on. Use port-port2 to find
the first available port in the indicated range. Use 0-N for range relative
to default service port.
- files can only be opened in read-only mode
- -s <sshd_port#>
- specifies the port number for the sshd daemon used for
authentication (default is 22).
- -T <tmpdir>
- specifies the directory path to
be used to place temporary files; default is /usr/tmp. Useful when running
with limited privileges.
- do not check /etc/hosts.equiv, $HOME/.rhosts for
password-based authentication; by default these files are checked first
by calling ruserok(...); if this option is specified a password is always
For more information
on the ROOT system, please refer to http://root.cern.ch
ROOT team (see web page above):
Rene Brun and Fons Rademakers
library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
This library is distributed in the hope that
it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
General Public License for more details.
You should have received a copy
of the GNU Lesser General Public License along with this library; if not,
write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
Boston, MA 02110-1301 USA
This manual page was originally written
by Christian Holm Christensen <email@example.com>, for the Debian GNU/Linux system
and ROOT version 3. It has been modified by G. Ganis <firstname.lastname@example.org> to document
new features included in ROOT version 4.
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