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/******************************************************************************
* xc_vmtrace.c
*
* API for manipulating hardware tracing features
*
* Copyright (c) 2020, Michal Leszczynski
*
* Copyright 2020 CERT Polska. All rights reserved.
* Use is subject to license terms.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; If not, see <http://www.gnu.org/licenses/>.
*/
#include "xc_private.h"
int xc_vmtrace_enable(
xc_interface *xch, uint32_t domid, uint32_t vcpu)
{
struct xen_domctl domctl = {
.cmd = XEN_DOMCTL_vmtrace_op,
.domain = domid,
.u.vmtrace_op = {
.cmd = XEN_DOMCTL_vmtrace_enable,
.vcpu = vcpu,
},
};
return do_domctl(xch, &domctl);
}
int xc_vmtrace_disable(
xc_interface *xch, uint32_t domid, uint32_t vcpu)
{
struct xen_domctl domctl = {
.cmd = XEN_DOMCTL_vmtrace_op,
.domain = domid,
.u.vmtrace_op = {
.cmd = XEN_DOMCTL_vmtrace_disable,
.vcpu = vcpu,
},
};
return do_domctl(xch, &domctl);
}
int xc_vmtrace_reset_and_enable(
xc_interface *xch, uint32_t domid, uint32_t vcpu)
{
struct xen_domctl domctl = {
.cmd = XEN_DOMCTL_vmtrace_op,
.domain = domid,
.u.vmtrace_op = {
.cmd = XEN_DOMCTL_vmtrace_reset_and_enable,
.vcpu = vcpu,
},
};
return do_domctl(xch, &domctl);
}
int xc_vmtrace_output_position(
xc_interface *xch, uint32_t domid, uint32_t vcpu, uint64_t *pos)
{
struct xen_domctl domctl = {
.cmd = XEN_DOMCTL_vmtrace_op,
.domain = domid,
.u.vmtrace_op = {
.cmd = XEN_DOMCTL_vmtrace_output_position,
.vcpu = vcpu,
},
};
int rc = do_domctl(xch, &domctl);
if ( !rc )
*pos = domctl.u.vmtrace_op.value;
return rc;
}
int xc_vmtrace_get_option(
xc_interface *xch, uint32_t domid, uint32_t vcpu,
uint64_t key, uint64_t *value)
{
struct xen_domctl domctl = {
.cmd = XEN_DOMCTL_vmtrace_op,
.domain = domid,
.u.vmtrace_op = {
.cmd = XEN_DOMCTL_vmtrace_get_option,
.vcpu = vcpu,
.key = key,
},
};
int rc = do_domctl(xch, &domctl);
if ( !rc )
*value = domctl.u.vmtrace_op.value;
return rc;
}
int xc_vmtrace_set_option(
xc_interface *xch, uint32_t domid, uint32_t vcpu,
uint64_t key, uint64_t value)
{
struct xen_domctl domctl = {
.cmd = XEN_DOMCTL_vmtrace_op,
.domain = domid,
.u.vmtrace_op = {
.cmd = XEN_DOMCTL_vmtrace_set_option,
.vcpu = vcpu,
.key = key,
.value = value,
},
};
return do_domctl(xch, &domctl);
}
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