| 1 | .\" Title: cifs.upcall
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| 2 | .\" Author: [see the "AUTHOR" section]
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| 3 | .\" Generator: DocBook XSL Stylesheets v1.74.0 <http://docbook.sf.net/>
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| 4 | .\" Date: 03/12/2009
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| 5 | .\" Manual: System Administration tools
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| 6 | .\" Source: Samba 3.3
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| 7 | .\" Language: English
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| 8 | .\"
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| 9 | .TH "CIFS\&.UPCALL" "8" "03/12/2009" "Samba 3\&.3" "System Administration tools"
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| 158 | ..
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| 159 | .\" -----------------------------------------------------------------
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| 160 | .\" * set default formatting
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| 161 | .\" -----------------------------------------------------------------
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| 165 | .ad l
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| 166 | .\" -----------------------------------------------------------------
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| 167 | .\" * MAIN CONTENT STARTS HERE *
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| 168 | .\" -----------------------------------------------------------------
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| 169 | .SH "Name"
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| 170 | cifs.upcall \- Userspace upcall helper for Common Internet File System (CIFS)
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| 171 | .SH "Synopsis"
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| 172 | .fam C
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| 173 | .HP \w'\ 'u
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| 174 | \FCcifs\&.upcall\F[] [\-c] [\-v] {keyid}
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| 175 | .fam
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| 176 | .SH "DESCRIPTION"
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| 177 | .PP
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| 178 | This tool is part of the
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| 179 | \fBsamba\fR(7)
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| 180 | suite\&.
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| 181 | .PP
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| 182 | 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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| 183 | .PP
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| 184 | cifs\&.upcall is generally intended to be run when the kernel calls request\-key(8)
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| 185 | 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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| 186 | .SH "OPTIONS"
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| 187 | .PP
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| 188 | \-c
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| 189 | .RS 4
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| 190 | 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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| 191 | .RE
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| 192 | .PP
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| 193 | \-v
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| 194 | .RS 4
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| 195 | Print version number and exit\&.
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| 196 | .RE
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| 197 | .SH "CONFIGURATION FOR KEYCTL"
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| 198 | .PP
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| 199 | 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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| 200 | .PP
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| 201 | cifs\&.spnego
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| 202 | .RS 4
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| 203 | This keytype is for retrieving kerberos session keys
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| 204 | .RE
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| 205 | .PP
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| 206 | dns_resolver
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| 207 | .RS 4
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| 208 | This key type is for resolving hostnames into IP addresses
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| 209 | .RE
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| 210 | .PP
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| 211 | 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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| 212 | .sp
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| 213 | .if n \{\
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| 214 | .RS 4
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| 215 | .\}
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| 216 | .fam C
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| 217 | .ps -1
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| 218 | .nf
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| 219 | .if t \{\
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| 222 | .BB lightgray adjust-for-leading-newline
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| 224 |
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| 225 | #OPERATION TYPE D C PROGRAM ARG1 ARG2\&.\&.\&.
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| 226 | #========= ============= = = ==========================================
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| 227 | create cifs\&.spnego * * /usr/local/sbin/cifs\&.upcall \-c %k
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| 228 | create dns_resolver * * /usr/local/sbin/cifs\&.upcall %k
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| 229 | .EB lightgray adjust-for-leading-newline
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| 230 | .if t \{\
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| 231 | .sp 1
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| 232 | .\}
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| 233 | .fi
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| 234 | .fam
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| 235 | .ps +1
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| 236 | .if n \{\
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| 237 | .RE
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| 238 | .\}
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| 239 | .PP
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| 240 | See
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| 241 | \fBrequest-key.conf5\fR()
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| 242 | for more info on each field\&.
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| 243 | .SH "SEE ALSO"
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| 244 | .PP
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| 245 |
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| 246 | \fBrequest-key.conf\fR(5),
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| 247 | \fBmount.cifs\fR(8)
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| 248 | .SH "AUTHOR"
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| 249 | .PP
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| 250 | Igor Mammedov wrote the cifs\&.upcall program\&.
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| 251 | .PP
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| 252 | Jeff Layton authored this manpage\&.
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| 253 | .PP
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| 254 | The maintainer of the Linux CIFS VFS is Steve French\&.
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| 255 | .PP
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| 256 | The
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| 257 | Linux CIFS Mailing list
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| 258 | is the preferred place to ask questions regarding these programs\&.
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