| 1 | .\" Title: cifs.upcall
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| 2 | .\" Author:
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| 3 | .\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/>
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| 4 | .\" Date: 12/10/2008
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| 5 | .\" Manual: System Administration tools
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| 6 | .\" Source: Samba 3.2
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| 7 | .\"
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| 8 | .TH "CIFS\.UPCALL" "8" "12/10/2008" "Samba 3\.2" "System Administration tools"
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| 9 | .\" disable hyphenation
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| 10 | .nh
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| 11 | .\" disable justification (adjust text to left margin only)
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| 12 | .ad l
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| 13 | .SH "NAME"
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| 14 | cifs.upcall - Userspace upcall helper for Common Internet File System (CIFS)
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| 15 | .SH "SYNOPSIS"
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| 16 | .HP 1
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| 17 | cifs\.upcall [\-c] [\-v] {keyid}
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| 18 | .SH "DESCRIPTION"
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| 19 | .PP
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| 20 | This tool is part of the
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| 21 | \fBsamba\fR(7)
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| 22 | suite\.
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| 23 | .PP
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| 24 | cifs\.upcall is a userspace helper program for the linux CIFS client filesystem\. There are a number of activities that the kernel cannot easily do itself\. This program is a callout program that does these things for the kernel and then returns the result\.
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| 25 | .PP
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| 26 | cifs\.upcall is generally intended to be run when the kernel calls request\-key(8)
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| 27 | for a particular key type\. While it can be run directly from the command\-line, it\'s not generally intended to be run that way\.
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| 28 | .SH "OPTIONS"
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| 29 | .PP
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| 30 | \-c
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| 31 | .RS 4
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| 32 | When handling a kerberos upcall, use a service principal that starts with "cifs/"\. The default is to use the "host/" service principal\.
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| 33 | .RE
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| 34 | .PP
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| 35 | \-v
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| 36 | .RS 4
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| 37 | Print version number and exit\.
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| 38 | .RE
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| 39 | .SH "CONFIGURATION FOR KEYCTL"
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| 40 | .PP
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| 41 | cifs\.upcall is designed to be called from the kernel via the request\-key callout program\. This requires that request\-key be told where and how to call this program\. The current cifs\.upcall program handles two different key types:
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| 42 | .PP
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| 43 | cifs\.spnego
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| 44 | .RS 4
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| 45 | This keytype is for retrieving kerberos session keys
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| 46 | .RE
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| 47 | .PP
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| 48 | dns_resolver
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| 49 | .RS 4
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| 50 | This key type is for resolving hostnames into IP addresses
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| 51 | .RE
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| 52 | .PP
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| 53 | To make this program useful for CIFS, you\'ll need to set up entries for them in request\-key\.conf(5)\. Here\'s an example of an entry for each key type:
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| 54 | .sp
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| 55 | .RS 4
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| 56 | .nf
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| 57 | #OPERATION TYPE D C PROGRAM ARG1 ARG2\.\.\.
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| 58 | #========= ============= = = ==========================================
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| 59 | create cifs\.spnego * * /usr/local/sbin/cifs\.upcall \-c %k
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| 60 | create dns_resolver * * /usr/local/sbin/cifs\.upcall %k
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| 61 | .fi
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| 62 | .RE
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| 63 | .PP
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| 64 | See
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| 65 | \fBrequest-key.conf5\fR()
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| 66 | for more info on each field\.
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| 67 | .SH "SEE ALSO"
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| 68 | .PP
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| 69 |
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| 70 | \fBrequest-key.conf\fR(5),
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| 71 | \fBmount.cifs\fR(8)
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| 72 | .SH "AUTHOR"
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| 73 | .PP
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| 74 | Igor Mammedov wrote the cifs\.upcall program\.
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| 75 | .PP
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| 76 | Jeff Layton authored this manpage\.
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| 77 | .PP
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| 78 | The maintainer of the Linux CIFS VFS is Steve French\.
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| 79 | .PP
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| 80 | The
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| 81 | Linux CIFS Mailing list
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| 82 | is the preferred place to ask questions regarding these programs\.
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