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man/man8/tcsd.8

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+.\" Copyright (C) 2005 International Business Machines Corporation
+.\"
+.de Sh \" Subsection
+.br
+.if t .Sp
+.ne 5
+.PP
+\fB\\$1\fR
+.PP
+..
+.de Sp \" Vertical space (when we can't use .PP)
+.if t .sp .5v
+.if n .sp
+..
+.de Ip \" List item
+.br
+.ie \\n(.$>=3 .ne \\$3
+.el .ne 3
+.IP "\\$1" \\$2
+..
+.TH "tcsd" 8 "2005-03-15" "TSS 1.1"
+.ce 1
+TCG Software Stack 
+.SH NAME
+tcsd \- daemon that manages Trusted Computing resources
+.SH "SYNOPSIS"
+.ad l
+.hy 0
+.B tcsd
+.RB [ \-f ]
+
+.SH "DESCRIPTION"
+.PP
+Trousers is an open-source TCG Software Stack (TSS), released under the Common 
+Public License. Trousers aims to be compliant with the current (1.1b) and 
+upcoming (1.2) TSS specifications available from the Trusted Computing Group 
+website: http://www.trustedcomputinggroup.org.
+
+\fBtcsd\fR is a user space daemon that should be (according to the TSS spec)
+the only portal to the TPM device driver. At boot time, \fBtcsd\fR should 
+be started, it should open the TPM device driver and from that point on, all 
+requests to the TPM should go through the TSS stack. The \fBtcsd\fR manages TPM
+resources and handles requests from TSP's both local and remote.
+
+.TP
+\fB\-f\fR
+run the daemon in the foreground
+
+.SH "ACCESS CONTROL"
+.PP
+There are two types of access control for the \fBtcsd\fR, access to the
+daemon's socket itself and access to specific commands internal to the
+\fBtcsd\fR. Access to the \fBtcsd\fR's port should be controlled by the system
+administrator using firewall rules.  If using iptables, the following rule
+will allow a specific host access to the tcsd:
+
+# iptables -A INPUT -s $IP_ADDRESS -p tcp --destination-port 30003 -j ACCEPT
+
+Access to individual commands internal to the tcsd is configured by the
+\fBtcsd\fR configuration file's "remote_ops" directive. Each function call
+in the TCS API is reachable by a unique ordinal.  Each labeled "remote op"
+actually defines a set of ordinals (usually more than one) necessary to
+accomplish the operation. So, for example, the "random" operation enables
+the ordinals for opening and closing a context, calling TCS_StirRandom
+and TCS_GetRandom, as well as TCS_FreeMemory. By default, connections from
+localhost will allow any ordinals.
+
+.SH "DATA FILES"
+.PP
+TSS applications have access to 2 different kinds of 'persistant' storage. 'User' 
+persistant storage has the lifetime of that of the application using it 
+and therefore is destroyed when an application exits.  User PS is controlled 
+by the TSP of the application.  'System' persistent storage is controlled by 
+the TCS and stays valid across application lifetimes, \fBtcsd\fR restarts and 
+system resets. Data registered in system PS stays valid until an application 
+requests that it be removed. User PS files are by default stored as 
+/var/tpm/user.{pid} and the system PS file by default is /var/tpm/system.data. 
+The system PS file is initially created when ownership of the TPM is first 
+taken.
+
+.SH "CONFIGURATION"
+\fBtcsd\fR configuration is stored by default in /etc/tcsd.conf
+
+.SH "DEBUG OUTPUT"
+If TrouSerS has been compiled with debugging enabled, the debugging output
+can be supressed by setting the TSS_DEBUG_OFF environment variable.
+
+.SH "DEVICE DRIVERS"
+.PP
+\fBtcsd\fR is compatible with the IBM Research TPM device driver available
+from http://www.research.ibm.com/gsal/tcpa and the TPM device driver available
+from http://sf.net/projects/tmpdd
+
+.SH "CONFORMING TO"
+.PP
+\fBtcsd\fR conforms to the Trusted Computing Group Software
+Specification version 1.1 Golden
+
+.SH "SEE ALSO"
+.PP
+\fBtcsd.conf\fR(5)
+
+.SH "AUTHOR"
+Kent Yoder
+
+.SH "REPORTING BUGS"
+Report bugs to <trousers-tech@lists.sf.net>