127 lines
3.6 KiB
Groff
127 lines
3.6 KiB
Groff
.\" Copyright (c) 2013 The FreeBSD Foundation
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.\" All rights reserved.
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.\"
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.\" This documentation was written by Pawel Jakub Dawidek under sponsorship
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.\" from the FreeBSD Foundation.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd October 26, 2013
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.Dt CASPERD 8
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.Os
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.Sh NAME
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.Nm casperd
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.Nd "Capability Services friendly daemon"
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.Sh SYNOPSIS
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.Nm
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[-Fhv] [-D servconfdir] [-P pidfile] [-S sockpath]
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.Op Fl Fhv
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.Op Fl D Ar servconfdir
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.Op Fl P Ar pidfile
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.Op Fl S Ar sockpath
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.Sh DESCRIPTION
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The
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.Nm
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daemon hosts various services that can be accessed through
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libcapsicum's capabilities by programs running in sandboxes.
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For example it is prohibited to send UDP packets to arbitrary destinations
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when operating in capability mode, which makes DNS resolution impossible.
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To make it possible the
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.Nm
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daemon provides the
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.Nm system.dns
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service that proxies DNS resolution requests through a dedicated,
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non-sandboxed process provided by
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.Nm .
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.Pp
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The
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.Nm
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daemon can be started with the following command line arguments:
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.Bl -tag -width ".Fl D Ar servconfdir"
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.It Fl D Ar servconfdir
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Specify alternative location of the service configuration directory.
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The default location is
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.Pa /etc/casper/ .
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.It Fl F
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Start the
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.Nm
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daemon in the foreground.
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By default
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.Nm
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starts in the background.
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.It Fl h
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Print the
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.Nm
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usage message.
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.It Fl P Ar pidfile
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Specify alternative location of a file where main process PID will be
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stored.
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The default location is
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.Pa /var/run/casperd.pid .
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.It Fl S Ar sockpath
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Specify alternative location of the
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.Xr unix 4
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domain socket used to connect to the
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.Nm
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daemon.
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The default location is
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.Pa /var/run/casper .
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.It Fl v
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Print or log verbose/debugging information.
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This option can be specified multiple times to raise the verbosity
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level.
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.El
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.Sh FILES
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.Bl -tag -width ".Pa /var/run/casperd.pid" -compact
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.It Pa /etc/casper/
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The configuration directory for
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.Nm
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services.
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.It Pa /var/run/casper
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.Xr unix 4
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domain socket used to connect to the
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.Nm
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daemon.
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.It Pa /var/run/casperd.pid
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The default location of the
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.Nm
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PID file.
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.El
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.Sh EXIT STATUS
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The
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.Nm
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daemon exits 0 on success, and >0 if an error occurs.
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.Sh SEE ALSO
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.Xr cap_enter 2 ,
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.Xr libcapsicum 3 ,
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.Xr pidfile 3 ,
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.Xr capsicum 4 ,
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.Xr unix 4
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.Sh AUTHORS
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The
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.Nm
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was implemented by
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.An Pawel Jakub Dawidek Aq Mt pawel@dawidek.net
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under sponsorship from the FreeBSD Foundation.
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