3 knfs - Establishes authenticated access via the NFS/AFS Translator
10 B<knfs> S<<< B<-host> <I<host name>> >>> S<<< [B<-id> <I<user ID (decimal)>>] >>>
11 S<<< [B<-sysname> <I<host's '@sys' value>>] >>> [B<-unlog>] [B<-tokens>]
14 B<knfs> S<<< B<-ho> <I<host name>> >>> S<<< [B<-i> <I<user ID (decimal)>>] >>>
15 S<<< [B<-s> <I<host's '@sys' value>>] >>> [B<-u>] [B<-t>] [B<-he>]
22 The B<knfs> command creates an AFS credential structure on the local
23 machine, identifying it by a process authentication group (PAG) number
24 associated with the NFS client machine named by the B<-hostname> argument
25 and by default with a local UID on the NFS client machine that matches the
26 issuer's local UID on the local machine. It places in the credential
27 structure the AFS tokens that the issuer has previously obtained (by
28 logging onto the local machine if an AFS-modified login utility is
29 installed, by issuing the B<klog> command, or both). To associate the
30 credential structure with an NFS UID that does not match the issuer's
31 local UID, use the B<-id> argument.
33 Issue this command only on the NFS(R)/AFS translator machine that is
34 serving the NFS client machine, after obtaining AFS tokens on the
35 translator machine for every cell to which authenticated access is
36 required. The Cache Manager on the translator machine uses the tokens to
37 obtain authenticated AFS access for the designated user working on the NFS
38 client machine. This command is not effective if issued on an NFS client
41 To enable the user on the NFS client machine to issue AFS commands, use
42 the B<-sysname> argument to specify the NFS client machine's system type,
43 which can differ from the translator machine's. The NFS client machine
44 must be a system type for which AFS is supported.
46 The B<-unlog> flag discards the tokens in the credential structure, but
47 does not destroy the credential structure itself. The Cache Manager on the
48 translator machine retains the credential structure until the next reboot,
49 and uses it each time the issuer accesses AFS through the translator
50 machine. The credential structure only has tokens in it if the user
51 reissues the B<knfs> command on the translator machine each time the user
52 logs into the NFS client machine.
54 To display the tokens associated with the designated user on the NFS
55 client machine, include the B<-tokens> flag.
57 Users working on NFS client machines of system types for which AFS
58 binaries are available can use the B<klog> command rather than the B<knfs>
63 If the translator machine's administrator has enabled UID checking by
64 issuing the B<fs exportafs> command with the B<-uidcheck on> argument, it
65 is not possible to use the B<-id> argument to assign the tokens to an NFS
66 UID that differs from the issuer's local UID. In this case, there is no
67 point in including the B<-id> argument, because the only acceptable value
68 (the issuer's local UID) is the value used when the B<-id> argument is
69 omitted. Requiring matching UIDs is effective only when users have the
70 same local UID on the translator machine as on NFS client machines. In
71 that case, it guarantees that users assign their tokens only to their own
74 This command does not make it possible for users working on non-supported
75 system types to issue AFS commands. This is possible only on NFS clients
76 of a system type for which AFS is available.
82 =item B<-host> <I<host name>>
84 Names the NFS client machine on which the issuer is to work. Providing a
85 fully-qualified hostname is best, but abbreviated forms are possibly
86 acceptable depending on the state of the cell's name server at the time
87 the command is issued.
89 =item B<-id> <I<user ID (decimal)>>
91 Specifies the local UID on the NFS client to which to assign the
92 tokens. The NFS client identifies file requests by the NFS UID, so
93 creating the association enables the Cache Manager on the translator
94 machine to use the appropriate tokens when filling the requests. If this
95 argument is omitted, the command interpreter uses an NFS UID that matches
96 the issuer's local UID on the translator machine (as returned by the
99 =item B<-sysname> <I<host's '@sys' value>>
101 Specifies the value that the local (translator) machine's remote executor
102 daemon substitutes for the I<@sys> variable in pathnames when executing
103 AFS commands issued on the NFS client machine (which must be a supported
104 system type). If the NFS user's PATH environment variable uses the I<@sys>
105 variable in the pathnames for directories that house AFS binaries (as
106 recommended), then setting this argument enables NFS users to issue AFS
107 commands by leading the remote executor daemon to access the AFS binaries
108 appropriate to the NFS client machine even if its system type differs from
109 the translator machine's.
113 Discards the tokens stored in the credential structure identified by the
114 PAG associated with the B<-host> argument and, optionally, the B<-id>
119 Displays the AFS tokens assigned to the designated user on the indicated
124 Prints the online help for this command. All other valid options are
131 The following error message indicates that UID checking is enabled on the
132 translator machine and that the value provided for the B<-id> argument
133 differs from the issuer's local UID.
135 knfs: Translator in 'passwd sync' mode; remote uid must be the same as
140 The following example illustrates a typical use of this command. The
141 issuer C<smith> is working on the machine C<nfscli1.example.com> and has user
142 ID C<1020> on that machine. The translator machine C<tx4.example.com> uses an
143 AFS-modified login utility, so C<smith> obtains tokens for the Example
144 Corporation cell automatically upon login via the B<telnet> program. She
145 then issues the B<klog> command to obtain tokens as C<admin> in the Example
146 Corporation's test cell, C<test.example.com>, and the B<knfs> command to
147 associate both tokens with the credential structure identified by machine
148 name C<nfs-cli1> and user ID C<1020>. She breaks the connection to C<tx4>
149 and works on C<nfscli1>.
151 % telnet tx4.example.com
157 % klog admin -cell test.example.com
160 % knfs nfscli1.example.com 1020
164 The following example shows user smith again connecting to the machine
165 C<tx4> via the B<telnet> program and discarding the tokens.
167 % telnet translator4.example.com
173 % knfs nfscli1.example.com 1020 -unlog
177 =head1 PRIVILEGE REQUIRED
188 IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.
190 This documentation is covered by the IBM Public License Version 1.0. It was
191 converted from HTML to POD by software written by Chas Williams and Russ
192 Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.