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.\" ========================================================================
.\"
.IX Title "ImVirt 3pm"
.TH ImVirt 3pm "2016-05-04" "perl v5.22.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
ImVirt \- detects several virtualizations
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&    use ImVirt;
\&    print imv_get(IMV_PROB_DEFAULT, imv_detect()),"\en";
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The \f(CW\*(C`ImVirt\*(C'\fR package tries to detect if it is run in a
virtualization container. At least the following container
should be detected:
.IP "ARAnyM" 4
.IX Item "ARAnyM"
.PD 0
.IP "\s-1KVM\s0" 4
.IX Item "KVM"
.IP "lguest" 4
.IX Item "lguest"
.IP "\s-1LXC\s0" 4
.IX Item "LXC"
.IP "OpenVZ" 4
.IX Item "OpenVZ"
.IP "\s-1QEMU\s0" 4
.IX Item "QEMU"
.IP "\s-1UML\s0" 4
.IX Item "UML"
.IP "VirtualBox" 4
.IX Item "VirtualBox"
.IP "Virtual PC/Server" 4
.IX Item "Virtual PC/Server"
.IP "VMware" 4
.IX Item "VMware"
.IP "Xen" 4
.IX Item "Xen"
.PD
.SH "DETECTION HEURISTIC"
.IX Header "DETECTION HEURISTIC"
The detection is based on a heuristic \- you should not trust the result at all.
.PP
ImVirt probes for different well-known characteristics of different
virtualization containers. Any characteristics found or not found are weighted
by their significance.
.PP
The result of the heuristic is a weighted tree. The leaves are the (not)
detected containers.
.SH "FUNCTIONS"
.IX Header "FUNCTIONS"
The following functions should be used to retrieve the detected virtualization
containers:
.ie n .IP "imv_get($prob) Returns exactly one string describing the detected container. If the detected container has a smaller match probability than $prob the string 'Unknown' is returned." 4
.el .IP "imv_get($prob) Returns exactly one string describing the detected container. If the detected container has a smaller match probability than \f(CW$prob\fR the string 'Unknown' is returned." 4
.IX Item "imv_get($prob) Returns exactly one string describing the detected container. If the detected container has a smaller match probability than $prob the string 'Unknown' is returned."
.PD 0
.IP "\fIimv_get_all()\fR Returns a hash any positive detected containers as keys and their corresponding match probability as value." 4
.IX Item "imv_get_all() Returns a hash any positive detected containers as keys and their corresponding match probability as value."
.IP "\fIimv_get_pos_results()\fR Returns a list of all possible results which might be returned by all detection modules. The list entries might be appended by some additional data like version numbers etc." 4
.IX Item "imv_get_pos_results() Returns a list of all possible results which might be returned by all detection modules. The list entries might be appended by some additional data like version numbers etc."