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9b4ed67d2528bc9c1d2a6b94de7678920437a18e
xen/tools/libxc/xc_domain.c
T
kfraser@localhost.localdomain a4be7b6267 [LIBXC] Clarify error messages to talk about allocation 'extents' 
rather than 'pages'.
Signed-off-by: Jimi Xenidis <jimix@watson.ibm.com>
2006-11-15 09:30:44 +00:00

570 lines
16 KiB
C
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/******************************************************************************
* xc_domain.c
*
* API for manipulating and obtaining information on domains.
*
* Copyright (c) 2003, K A Fraser.
*/
#include "xc_private.h"
#include <xen/memory.h>
int xc_domain_create(int xc_handle,
uint32_t ssidref,
xen_domain_handle_t handle,
uint32_t flags,
uint32_t *pdomid)
{
int err;
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_createdomain;
domctl.domain = (domid_t)*pdomid;
domctl.u.createdomain.ssidref = ssidref;
domctl.u.createdomain.flags = flags;
memcpy(domctl.u.createdomain.handle, handle, sizeof(xen_domain_handle_t));
if ( (err = do_domctl(xc_handle, &domctl)) != 0 )
return err;
*pdomid = (uint16_t)domctl.domain;
return 0;
}
int xc_domain_pause(int xc_handle,
uint32_t domid)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_pausedomain;
domctl.domain = (domid_t)domid;
return do_domctl(xc_handle, &domctl);
}
int xc_domain_unpause(int xc_handle,
uint32_t domid)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_unpausedomain;
domctl.domain = (domid_t)domid;
return do_domctl(xc_handle, &domctl);
}
int xc_domain_destroy(int xc_handle,
uint32_t domid)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_destroydomain;
domctl.domain = (domid_t)domid;
return do_domctl(xc_handle, &domctl);
}
int xc_domain_shutdown(int xc_handle,
uint32_t domid,
int reason)
{
int ret = -1;
sched_remote_shutdown_t arg;
DECLARE_HYPERCALL;
hypercall.op = __HYPERVISOR_sched_op;
hypercall.arg[0] = (unsigned long)SCHEDOP_remote_shutdown;
hypercall.arg[1] = (unsigned long)&arg;
arg.domain_id = domid;
arg.reason = reason;
if ( lock_pages(&arg, sizeof(arg)) != 0 )
{
PERROR("Could not lock memory for Xen hypercall");
goto out1;
}
ret = do_xen_hypercall(xc_handle, &hypercall);
unlock_pages(&arg, sizeof(arg));
out1:
return ret;
}
int xc_vcpu_setaffinity(int xc_handle,
uint32_t domid,
int vcpu,
uint64_t cpumap)
{
DECLARE_DOMCTL;
int ret = -1;
domctl.cmd = XEN_DOMCTL_setvcpuaffinity;
domctl.domain = (domid_t)domid;
domctl.u.vcpuaffinity.vcpu = vcpu;
set_xen_guest_handle(domctl.u.vcpuaffinity.cpumap.bitmap,
(uint8_t *)&cpumap);
domctl.u.vcpuaffinity.cpumap.nr_cpus = sizeof(cpumap) * 8;
if ( lock_pages(&cpumap, sizeof(cpumap)) != 0 )
{
PERROR("Could not lock memory for Xen hypercall");
goto out;
}
ret = do_domctl(xc_handle, &domctl);
unlock_pages(&cpumap, sizeof(cpumap));
out:
return ret;
}
int xc_vcpu_getaffinity(int xc_handle,
uint32_t domid,
int vcpu,
uint64_t *cpumap)
{
DECLARE_DOMCTL;
int ret = -1;
domctl.cmd = XEN_DOMCTL_getvcpuaffinity;
domctl.domain = (domid_t)domid;
domctl.u.vcpuaffinity.vcpu = vcpu;
set_xen_guest_handle(domctl.u.vcpuaffinity.cpumap.bitmap,
(uint8_t *)cpumap);
domctl.u.vcpuaffinity.cpumap.nr_cpus = sizeof(*cpumap) * 8;
if ( lock_pages(cpumap, sizeof(*cpumap)) != 0 )
{
PERROR("Could not lock memory for Xen hypercall");
goto out;
}
ret = do_domctl(xc_handle, &domctl);
unlock_pages(cpumap, sizeof(*cpumap));
out:
return ret;
}
int xc_domain_getinfo(int xc_handle,
uint32_t first_domid,
unsigned int max_doms,
xc_dominfo_t *info)
{
unsigned int nr_doms;
uint32_t next_domid = first_domid;
DECLARE_DOMCTL;
int rc = 0;
memset(info, 0, max_doms*sizeof(xc_dominfo_t));
for ( nr_doms = 0; nr_doms < max_doms; nr_doms++ )
{
domctl.cmd = XEN_DOMCTL_getdomaininfo;
domctl.domain = (domid_t)next_domid;
if ( (rc = do_domctl(xc_handle, &domctl)) < 0 )
break;
info->domid = (uint16_t)domctl.domain;
info->dying = !!(domctl.u.getdomaininfo.flags&XEN_DOMINF_dying);
info->shutdown = !!(domctl.u.getdomaininfo.flags&XEN_DOMINF_shutdown);
info->paused = !!(domctl.u.getdomaininfo.flags&XEN_DOMINF_paused);
info->blocked = !!(domctl.u.getdomaininfo.flags&XEN_DOMINF_blocked);
info->running = !!(domctl.u.getdomaininfo.flags&XEN_DOMINF_running);
info->hvm = !!(domctl.u.getdomaininfo.flags&XEN_DOMINF_hvm_guest);
info->shutdown_reason =
(domctl.u.getdomaininfo.flags>>XEN_DOMINF_shutdownshift) &
XEN_DOMINF_shutdownmask;
if ( info->shutdown && (info->shutdown_reason == SHUTDOWN_crash) )
{
info->shutdown = 0;
info->crashed = 1;
}
info->ssidref = domctl.u.getdomaininfo.ssidref;
info->nr_pages = domctl.u.getdomaininfo.tot_pages;
info->max_memkb = domctl.u.getdomaininfo.max_pages << (PAGE_SHIFT-10);
info->shared_info_frame = domctl.u.getdomaininfo.shared_info_frame;
info->cpu_time = domctl.u.getdomaininfo.cpu_time;
info->nr_online_vcpus = domctl.u.getdomaininfo.nr_online_vcpus;
info->max_vcpu_id = domctl.u.getdomaininfo.max_vcpu_id;
memcpy(info->handle, domctl.u.getdomaininfo.handle,
sizeof(xen_domain_handle_t));
next_domid = (uint16_t)domctl.domain + 1;
info++;
}
if ( nr_doms == 0 )
return rc;
return nr_doms;
}
int xc_domain_getinfolist(int xc_handle,
uint32_t first_domain,
unsigned int max_domains,
xc_domaininfo_t *info)
{
int ret = 0;
DECLARE_SYSCTL;
if ( lock_pages(info, max_domains*sizeof(xc_domaininfo_t)) != 0 )
return -1;
sysctl.cmd = XEN_SYSCTL_getdomaininfolist;
sysctl.u.getdomaininfolist.first_domain = first_domain;
sysctl.u.getdomaininfolist.max_domains = max_domains;
set_xen_guest_handle(sysctl.u.getdomaininfolist.buffer, info);
if ( xc_sysctl(xc_handle, &sysctl) < 0 )
ret = -1;
else
ret = sysctl.u.getdomaininfolist.num_domains;
unlock_pages(info, max_domains*sizeof(xc_domaininfo_t));
return ret;
}
int xc_vcpu_getcontext(int xc_handle,
uint32_t domid,
uint32_t vcpu,
vcpu_guest_context_t *ctxt)
{
int rc;
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_getvcpucontext;
domctl.domain = (domid_t)domid;
domctl.u.vcpucontext.vcpu = (uint16_t)vcpu;
set_xen_guest_handle(domctl.u.vcpucontext.ctxt, ctxt);
if ( (rc = lock_pages(ctxt, sizeof(*ctxt))) != 0 )
return rc;
rc = do_domctl(xc_handle, &domctl);
unlock_pages(ctxt, sizeof(*ctxt));
return rc;
}
int xc_shadow_control(int xc_handle,
uint32_t domid,
unsigned int sop,
unsigned long *dirty_bitmap,
unsigned long pages,
unsigned long *mb,
uint32_t mode,
xc_shadow_op_stats_t *stats)
{
int rc;
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_shadow_op;
domctl.domain = (domid_t)domid;
domctl.u.shadow_op.op = sop;
domctl.u.shadow_op.pages = pages;
domctl.u.shadow_op.mb = mb ? *mb : 0;
domctl.u.shadow_op.mode = mode;
set_xen_guest_handle(domctl.u.shadow_op.dirty_bitmap, dirty_bitmap);
rc = do_domctl(xc_handle, &domctl);
if ( stats )
memcpy(stats, &domctl.u.shadow_op.stats,
sizeof(xc_shadow_op_stats_t));
if ( mb )
*mb = domctl.u.shadow_op.mb;
return (rc == 0) ? domctl.u.shadow_op.pages : rc;
}
int xc_domain_setcpuweight(int xc_handle,
uint32_t domid,
float weight)
{
int sched_id;
int ret;
/* Figure out which scheduler is currently used: */
if ( (ret = xc_sched_id(xc_handle, &sched_id)) != 0 )
return ret;
/* No-op. */
return 0;
}
int xc_domain_setmaxmem(int xc_handle,
uint32_t domid,
unsigned int max_memkb)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_max_mem;
domctl.domain = (domid_t)domid;
domctl.u.max_mem.max_memkb = max_memkb;
return do_domctl(xc_handle, &domctl);
}
int xc_domain_set_time_offset(int xc_handle,
uint32_t domid,
int32_t time_offset_seconds)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_settimeoffset;
domctl.domain = (domid_t)domid;
domctl.u.settimeoffset.time_offset_seconds = time_offset_seconds;
return do_domctl(xc_handle, &domctl);
}
int xc_domain_memory_increase_reservation(int xc_handle,
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
unsigned int address_bits,
xen_pfn_t *extent_start)
{
int err;
struct xen_memory_reservation reservation = {
.nr_extents = nr_extents,
.extent_order = extent_order,
.address_bits = address_bits,
.domid = domid
};
/* may be NULL */
set_xen_guest_handle(reservation.extent_start, extent_start);
err = xc_memory_op(xc_handle, XENMEM_increase_reservation, &reservation);
if ( err == nr_extents )
return 0;
if ( err >= 0 )
{
DPRINTF("Failed allocation for dom %d: "
"%ld extents of order %d, addr_bits %d\n",
domid, nr_extents, extent_order, address_bits);
errno = ENOMEM;
err = -1;
}
return err;
}
int xc_domain_memory_decrease_reservation(int xc_handle,
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
xen_pfn_t *extent_start)
{
int err;
struct xen_memory_reservation reservation = {
.nr_extents = nr_extents,
.extent_order = extent_order,
.address_bits = 0,
.domid = domid
};
set_xen_guest_handle(reservation.extent_start, extent_start);
if ( extent_start == NULL )
{
DPRINTF("decrease_reservation extent_start is NULL!\n");
errno = EINVAL;
return -1;
}
err = xc_memory_op(xc_handle, XENMEM_decrease_reservation, &reservation);
if ( err == nr_extents )
return 0;
if ( err >= 0 )
{
DPRINTF("Failed deallocation for dom %d: %ld extents of order %d\n",
domid, nr_extents, extent_order);
errno = EINVAL;
err = -1;
}
return err;
}
int xc_domain_memory_populate_physmap(int xc_handle,
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
unsigned int address_bits,
xen_pfn_t *extent_start)
{
int err;
struct xen_memory_reservation reservation = {
.nr_extents = nr_extents,
.extent_order = extent_order,
.address_bits = address_bits,
.domid = domid
};
set_xen_guest_handle(reservation.extent_start, extent_start);
err = xc_memory_op(xc_handle, XENMEM_populate_physmap, &reservation);
if ( err == nr_extents )
return 0;
if ( err >= 0 )
{
DPRINTF("Failed allocation for dom %d: %ld extents of order %d\n",
domid, nr_extents, extent_order);
errno = EBUSY;
err = -1;
}
return err;
}
int xc_domain_translate_gpfn_list(int xc_handle,
uint32_t domid,
unsigned long nr_gpfns,
xen_pfn_t *gpfn_list,
xen_pfn_t *mfn_list)
{
struct xen_translate_gpfn_list op = {
.domid = domid,
.nr_gpfns = nr_gpfns,
};
set_xen_guest_handle(op.gpfn_list, gpfn_list);
set_xen_guest_handle(op.mfn_list, mfn_list);
return xc_memory_op(xc_handle, XENMEM_translate_gpfn_list, &op);
}
int xc_domain_max_vcpus(int xc_handle, uint32_t domid, unsigned int max)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_max_vcpus;
domctl.domain = (domid_t)domid;
domctl.u.max_vcpus.max = max;
return do_domctl(xc_handle, &domctl);
}
int xc_domain_sethandle(int xc_handle, uint32_t domid,
xen_domain_handle_t handle)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_setdomainhandle;
domctl.domain = (domid_t)domid;
memcpy(domctl.u.setdomainhandle.handle, handle,
sizeof(xen_domain_handle_t));
return do_domctl(xc_handle, &domctl);
}
int xc_vcpu_getinfo(int xc_handle,
uint32_t domid,
uint32_t vcpu,
xc_vcpuinfo_t *info)
{
int rc;
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_getvcpuinfo;
domctl.domain = (domid_t)domid;
domctl.u.getvcpuinfo.vcpu = (uint16_t)vcpu;
rc = do_domctl(xc_handle, &domctl);
memcpy(info, &domctl.u.getvcpuinfo, sizeof(*info));
return rc;
}
int xc_domain_ioport_permission(int xc_handle,
uint32_t domid,
uint32_t first_port,
uint32_t nr_ports,
uint32_t allow_access)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_ioport_permission;
domctl.domain = (domid_t)domid;
domctl.u.ioport_permission.first_port = first_port;
domctl.u.ioport_permission.nr_ports = nr_ports;
domctl.u.ioport_permission.allow_access = allow_access;
return do_domctl(xc_handle, &domctl);
}
int xc_vcpu_setcontext(int xc_handle,
uint32_t domid,
uint32_t vcpu,
vcpu_guest_context_t *ctxt)
{
DECLARE_DOMCTL;
int rc;
domctl.cmd = XEN_DOMCTL_setvcpucontext;
domctl.domain = domid;
domctl.u.vcpucontext.vcpu = vcpu;
set_xen_guest_handle(domctl.u.vcpucontext.ctxt, ctxt);
if ( (rc = lock_pages(ctxt, sizeof(*ctxt))) != 0 )
return rc;
rc = do_domctl(xc_handle, &domctl);
unlock_pages(ctxt, sizeof(*ctxt));
return rc;
}
int xc_domain_irq_permission(int xc_handle,
uint32_t domid,
uint8_t pirq,
uint8_t allow_access)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_irq_permission;
domctl.domain = domid;
domctl.u.irq_permission.pirq = pirq;
domctl.u.irq_permission.allow_access = allow_access;
return do_domctl(xc_handle, &domctl);
}
int xc_domain_iomem_permission(int xc_handle,
uint32_t domid,
unsigned long first_mfn,
unsigned long nr_mfns,
uint8_t allow_access)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_iomem_permission;
domctl.domain = domid;
domctl.u.iomem_permission.first_mfn = first_mfn;
domctl.u.iomem_permission.nr_mfns = nr_mfns;
domctl.u.iomem_permission.allow_access = allow_access;
return do_domctl(xc_handle, &domctl);
}
/*
* Local variables:
* mode: C
* c-set-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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