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.\" Copyright (c) 2005 Kungliga Tekniska Högskolan
.\" (Royal Institute of Technology, Stockholm, Sweden).
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\"
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\"
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" 3. Neither the name of the Institute nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $Id$
.\"
.Dd May 29, 2005
.Dt KCM 8
.Os
.Sh NAME
.Nm kcm
.Nd process-based credential cache for Kerberos tickets.
.Sh SYNOPSIS
.Nm
.Op Fl Fl cache-name= Ns Ar cachename
.Oo Fl c Ar file \*(Ba Xo
.Fl Fl config-file= Ns Ar file
.Xc
.Oc
.Oo Fl g Ar group \*(Ba Xo
.Fl Fl group= Ns Ar group
.Xc
.Oc
.Op Fl Fl max-request= Ns Ar size
.Op Fl Fl disallow-getting-krbtgt
.Op Fl Fl detach
.Op Fl h | Fl Fl help
.Oo Fl k Ar principal \*(Ba Xo
.Fl Fl system-principal= Ns Ar principal
.Xc
.Oc
.Oo Fl l Ar time \*(Ba Xo
.Fl Fl lifetime= Ns Ar time
.Xc
.Oc
.Oo Fl m Ar mode \*(Ba Xo
.Fl Fl mode= Ns Ar mode
.Xc
.Oc
.Op Fl n | Fl Fl no-name-constraints
.Oo Fl r Ar time \*(Ba Xo
.Fl Fl renewable-life= Ns Ar time
.Xc
.Oc
.Oo Fl s Ar path \*(Ba Xo
.Fl Fl socket-path= Ns Ar path
.Xc
.Oc
.Oo Fl S Ar principal \*(Ba Xo
.Fl Fl server= Ns Ar principal
.Xc
.Oc
.Oo Fl t Ar keytab \*(Ba Xo
.Fl Fl keytab= Ns Ar keytab
.Xc
.Oc
.Oo Fl u Ar user \*(Ba Xo
.Fl Fl user= Ns Ar user
.Xc
.Oc
.Op Fl v | Fl Fl version
.Sh DESCRIPTION
.Nm
is a process based credential cache.
To use it, set the
.Ev KRB5CCNAME
environment variable to
.Ql KCM: Ns Ar uid
or add the stanza
.Bd -literal
[libdefaults]
default_cc_name = KCM:%{uid}
.Ed
to the
.Pa /etc/krb5.conf
configuration file and make sure
.Nm kcm
is started in the system startup files.
.Pp
The
.Nm
daemon can hold the credentials for all users in the system. Access
control is done with Unix-like permissions. The daemon checks the
access on all operations based on the uid and gid of the user. The
tickets are renewed as long as is permitted by the KDC's policy.
.Pp
The
.Nm
daemon can also keep a SYSTEM credential that server processes can
use to access services. One example of usage might be an nss_ldap
module that quickly needs to get credentials and doesn't want to renew
the ticket itself.
.Pp
Supported options:
.Bl -tag -width Ds
.It Fl Fl cache-name= Ns Ar cachename
system cache name
.It Fl c Ar file , Fl Fl config-file= Ns Ar file
location of config file
.It Fl g Ar group , Fl Fl group= Ns Ar group
system cache group
.It Fl Fl max-request= Ns Ar size
max size for a kcm-request
.It Fl Fl disallow-getting-krbtgt
disallow extracting any krbtgt from the
.Nm kcm
daemon.
.It Fl Fl detach
detach from console
.It Fl h , Fl Fl help
.It Fl k Ar principal , Fl Fl system-principal= Ns Ar principal
system principal name
.It Fl l Ar time , Fl Fl lifetime= Ns Ar time
lifetime of system tickets
.It Fl m Ar mode , Fl Fl mode= Ns Ar mode
octal mode of system cache
.It Fl n , Fl Fl no-name-constraints
disable credentials cache name constraints
.It Fl r Ar time , Fl Fl renewable-life= Ns Ar time
renewable lifetime of system tickets
.It Fl s Ar path , Fl Fl socket-path= Ns Ar path
path to kcm domain socket
.It Fl S Ar principal , Fl Fl server= Ns Ar principal
server to get system ticket for
.It Fl t Ar keytab , Fl Fl keytab= Ns Ar keytab
system keytab name
.It Fl u Ar user , Fl Fl user= Ns Ar user
system cache owner
.It Fl v , Fl Fl version
.El
.\".Sh ENVIRONMENT
.\".Sh FILES
.\".Sh EXAMPLES
.\".Sh DIAGNOSTICS
.\".Sh SEE ALSO
.\".Sh STANDARDS
.\".Sh HISTORY
.\".Sh AUTHORS
.\".Sh BUGS
|
