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KVM guests unique ID

 
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KVM guests unique ID

Hi,
I wanted to know if there was a way to get a unique UUID for KVM guest from the guest OS which isn't easily modifiable. I have a software that I would like to run inside a KVM guest and want to do some license protection on it using a unique UUID. Does KVM allow multiple VMs on the same machine with same UUID. I mean if someone edits the configuration file of the VM manually from the host, would it still bring up the VM if the uuid was duplicated ? Also how can I get the uuid of a guest VM from the guest ?

Also if someone could throw some light on guest host communication channel. Is there an equivalent of Xenstore or guest property store in KVM ? Some mechanism to share small messages between the guest and the host.

Thanks
Shivani

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PAM_GUEST(8)						    BSD System Manager's Manual 					      PAM_GUEST(8)

NAME
pam_guest -- Guest PAM module SYNOPSIS
[service-name] module-type control-flag pam_guest [arguments] DESCRIPTION
The guest service module for PAM allows guest logins. If successful, the pam_guest module sets the PAM environment variable GUEST to the login name. The application can check this variable using pam_getenv(3) to differentiate guest logins from normal logins. The following options may be passed to the pam_guest module: guests=list Comma-separated list of guest account names. The default is ``guest''. A typical value for ftpd(8) would be ``anonymous,ftp''. nopass Omits the password prompt if the target account is on the list of guest accounts. pass_as_ruser The password typed in by the user is exported as the PAM_RUSER item. This is useful for applications like ftpd(8) where guest users are encouraged to use their email address as password. pass_is_user Requires the guest user to type in the guest account name as password. SEE ALSO
pam_get_item(3), pam_getenv(3), pam.conf(5), pam(8) AUTHORS
The pam_guest module and this manual page were developed for the FreeBSD Project by ThinkSec AS and NAI Labs, the Security Research Division of Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 (``CBOSS''), as part of the DARPA CHATS research program. BSD
May 26, 2003 BSD

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