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libvirt/src/xen_internal.c
Daniel P. Berrange 39f775cc05 Add new 'availheap' sysctl variant for ABI changes in Xen
2009-06-16 09:31:19 +00:00

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/*
* xen_internal.c: direct access to Xen hypervisor level
*
* Copyright (C) 2005, 2006, 2007, 2008, 2009 Red Hat, Inc.
*
* See COPYING.LIB for the License of this software
*
* Daniel Veillard <veillard@redhat.com>
*/
#include <config.h>
#include <stdio.h>
#include <string.h>
/* required for uint8_t, uint32_t, etc ... */
#include <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <limits.h>
#include <stdint.h>
#include <regex.h>
#include <errno.h>
#include <sys/utsname.h>
#ifdef __sun
#include <sys/systeminfo.h>
#include <priv.h>
#ifndef PRIV_XVM_CONTROL
#define PRIV_XVM_CONTROL ((const char *)"xvm_control")
#endif
#endif /* __sun */
/* required for dom0_getdomaininfo_t */
#include <xen/dom0_ops.h>
#include <xen/version.h>
#ifdef HAVE_XEN_LINUX_PRIVCMD_H
#include <xen/linux/privcmd.h>
#else
#ifdef HAVE_XEN_SYS_PRIVCMD_H
#include <xen/sys/privcmd.h>
#endif
#endif
/* required for shutdown flags */
#include <xen/sched.h>
#include "virterror_internal.h"
#include "logging.h"
#include "datatypes.h"
#include "driver.h"
#include "util.h"
#include "xen_unified.h"
#include "xen_internal.h"
#include "xs_internal.h"
#include "stats_linux.h"
#include "xend_internal.h"
#include "buf.h"
#include "capabilities.h"
#include "memory.h"
#define VIR_FROM_THIS VIR_FROM_XEN
/*
* so far there is 2 versions of the structures usable for doing
* hypervisor calls.
*/
/* the old one */
typedef struct v0_hypercall_struct {
unsigned long op;
unsigned long arg[5];
} v0_hypercall_t;
#ifdef __linux__
#define XEN_V0_IOCTL_HYPERCALL_CMD \
_IOC(_IOC_NONE, 'P', 0, sizeof(v0_hypercall_t))
/* the new one */
typedef struct v1_hypercall_struct
{
uint64_t op;
uint64_t arg[5];
} v1_hypercall_t;
#define XEN_V1_IOCTL_HYPERCALL_CMD \
_IOC(_IOC_NONE, 'P', 0, sizeof(v1_hypercall_t))
typedef v1_hypercall_t hypercall_t;
#elif defined(__sun)
typedef privcmd_hypercall_t hypercall_t;
#else
#error "unsupported platform"
#endif
#ifndef __HYPERVISOR_sysctl
#define __HYPERVISOR_sysctl 35
#endif
#ifndef __HYPERVISOR_domctl
#define __HYPERVISOR_domctl 36
#endif
#ifdef WITH_RHEL5_API
#define SYS_IFACE_MIN_VERS_NUMA 3
#else
#define SYS_IFACE_MIN_VERS_NUMA 4
#endif
static int xen_ioctl_hypercall_cmd = 0;
static int initialized = 0;
static int in_init = 0;
static int hv_version = 0;
static int hypervisor_version = 2;
static int sys_interface_version = -1;
static int dom_interface_version = -1;
static int kb_per_pages = 0;
/* Regular expressions used by xenHypervisorGetCapabilities, and
* compiled once by xenHypervisorInit. Note that these are POSIX.2
* extended regular expressions (regex(7)).
*/
static const char *flags_hvm_re = "^flags[[:blank:]]+:.* (vmx|svm)[[:space:]]";
static regex_t flags_hvm_rec;
static const char *flags_pae_re = "^flags[[:blank:]]+:.* pae[[:space:]]";
static regex_t flags_pae_rec;
static const char *xen_cap_re = "(xen|hvm)-[[:digit:]]+\\.[[:digit:]]+-(x86_32|x86_64|ia64|powerpc64)(p|be)?";
static regex_t xen_cap_rec;
/*
* The content of the structures for a getdomaininfolist system hypercall
*/
#ifndef DOMFLAGS_DYING
#define DOMFLAGS_DYING (1<<0) /* Domain is scheduled to die. */
#define DOMFLAGS_HVM (1<<1) /* Domain is HVM */
#define DOMFLAGS_SHUTDOWN (1<<2) /* The guest OS has shut down. */
#define DOMFLAGS_PAUSED (1<<3) /* Currently paused by control software. */
#define DOMFLAGS_BLOCKED (1<<4) /* Currently blocked pending an event. */
#define DOMFLAGS_RUNNING (1<<5) /* Domain is currently running. */
#define DOMFLAGS_CPUMASK 255 /* CPU to which this domain is bound. */
#define DOMFLAGS_CPUSHIFT 8
#define DOMFLAGS_SHUTDOWNMASK 255 /* DOMFLAGS_SHUTDOWN guest-supplied code. */
#define DOMFLAGS_SHUTDOWNSHIFT 16
#endif
/*
* These flags explain why a system is in the state of "shutdown". Normally,
* They are defined in xen/sched.h
*/
#ifndef SHUTDOWN_poweroff
#define SHUTDOWN_poweroff 0 /* Domain exited normally. Clean up and kill. */
#define SHUTDOWN_reboot 1 /* Clean up, kill, and then restart. */
#define SHUTDOWN_suspend 2 /* Clean up, save suspend info, kill. */
#define SHUTDOWN_crash 3 /* Tell controller we've crashed. */
#endif
#define XEN_V0_OP_GETDOMAININFOLIST 38
#define XEN_V1_OP_GETDOMAININFOLIST 38
#define XEN_V2_OP_GETDOMAININFOLIST 6
struct xen_v0_getdomaininfo {
domid_t domain; /* the domain number */
uint32_t flags; /* flags, see before */
uint64_t tot_pages; /* total number of pages used */
uint64_t max_pages; /* maximum number of pages allowed */
unsigned long shared_info_frame; /* MFN of shared_info struct */
uint64_t cpu_time; /* CPU time used */
uint32_t nr_online_vcpus; /* Number of VCPUs currently online. */
uint32_t max_vcpu_id; /* Maximum VCPUID in use by this domain. */
uint32_t ssidref;
xen_domain_handle_t handle;
};
typedef struct xen_v0_getdomaininfo xen_v0_getdomaininfo;
struct xen_v2_getdomaininfo {
domid_t domain; /* the domain number */
uint32_t flags; /* flags, see before */
uint64_t tot_pages; /* total number of pages used */
uint64_t max_pages; /* maximum number of pages allowed */
uint64_t shared_info_frame; /* MFN of shared_info struct */
uint64_t cpu_time; /* CPU time used */
uint32_t nr_online_vcpus; /* Number of VCPUs currently online. */
uint32_t max_vcpu_id; /* Maximum VCPUID in use by this domain. */
uint32_t ssidref;
xen_domain_handle_t handle;
};
typedef struct xen_v2_getdomaininfo xen_v2_getdomaininfo;
/* As of Hypervisor Call v2, DomCtl v5 we are now 8-byte aligned
even on 32-bit archs when dealing with uint64_t */
#define ALIGN_64 __attribute__((aligned(8)))
struct xen_v2d5_getdomaininfo {
domid_t domain; /* the domain number */
uint32_t flags; /* flags, see before */
uint64_t tot_pages ALIGN_64; /* total number of pages used */
uint64_t max_pages ALIGN_64; /* maximum number of pages allowed */
uint64_t shared_info_frame ALIGN_64; /* MFN of shared_info struct */
uint64_t cpu_time ALIGN_64; /* CPU time used */
uint32_t nr_online_vcpus; /* Number of VCPUs currently online. */
uint32_t max_vcpu_id; /* Maximum VCPUID in use by this domain. */
uint32_t ssidref;
xen_domain_handle_t handle;
};
typedef struct xen_v2d5_getdomaininfo xen_v2d5_getdomaininfo;
union xen_getdomaininfo {
struct xen_v0_getdomaininfo v0;
struct xen_v2_getdomaininfo v2;
struct xen_v2d5_getdomaininfo v2d5;
};
typedef union xen_getdomaininfo xen_getdomaininfo;
union xen_getdomaininfolist {
struct xen_v0_getdomaininfo *v0;
struct xen_v2_getdomaininfo *v2;
struct xen_v2d5_getdomaininfo *v2d5;
};
typedef union xen_getdomaininfolist xen_getdomaininfolist;
struct xen_v2_getschedulerid {
uint32_t sched_id; /* Get Scheduler ID from Xen */
};
typedef struct xen_v2_getschedulerid xen_v2_getschedulerid;
union xen_getschedulerid {
struct xen_v2_getschedulerid *v2;
};
typedef union xen_getschedulerid xen_getschedulerid;
struct xen_v2s4_availheap {
uint32_t min_bitwidth; /* Smallest address width (zero if don't care). */
uint32_t max_bitwidth; /* Largest address width (zero if don't care). */
int32_t node; /* NUMA node (-1 for sum across all nodes). */
uint64_t avail_bytes; /* Bytes available in the specified region. */
};
typedef struct xen_v2s4_availheap xen_v2s4_availheap;
struct xen_v2s5_availheap {
uint32_t min_bitwidth; /* Smallest address width (zero if don't care). */
uint32_t max_bitwidth; /* Largest address width (zero if don't care). */
int32_t node; /* NUMA node (-1 for sum across all nodes). */
uint64_t avail_bytes ALIGN_64; /* Bytes available in the specified region. */
};
typedef struct xen_v2s5_availheap xen_v2s5_availheap;
#define XEN_GETDOMAININFOLIST_ALLOC(domlist, size) \
(hypervisor_version < 2 ? \
(VIR_ALLOC_N(domlist.v0, (size)) == 0) : \
(dom_interface_version < 5 ? \
(VIR_ALLOC_N(domlist.v2, (size)) == 0) : \
(VIR_ALLOC_N(domlist.v2d5, (size)) == 0)))
#define XEN_GETDOMAININFOLIST_FREE(domlist) \
(hypervisor_version < 2 ? \
VIR_FREE(domlist.v0) : \
(dom_interface_version < 5 ? \
VIR_FREE(domlist.v2) : \
VIR_FREE(domlist.v2d5)))
#define XEN_GETDOMAININFOLIST_CLEAR(domlist, size) \
(hypervisor_version < 2 ? \
memset(domlist.v0, 0, sizeof(*domlist.v0) * size) : \
(dom_interface_version < 5 ? \
memset(domlist.v2, 0, sizeof(*domlist.v2) * size) : \
memset(domlist.v2d5, 0, sizeof(*domlist.v2d5) * size)))
#define XEN_GETDOMAININFOLIST_DOMAIN(domlist, n) \
(hypervisor_version < 2 ? \
domlist.v0[n].domain : \
(dom_interface_version < 5 ? \
domlist.v2[n].domain : \
domlist.v2d5[n].domain))
#define XEN_GETDOMAININFOLIST_UUID(domlist, n) \
(hypervisor_version < 2 ? \
domlist.v0[n].handle : \
(dom_interface_version < 5 ? \
domlist.v2[n].handle : \
domlist.v2d5[n].handle))
#define XEN_GETDOMAININFOLIST_DATA(domlist) \
(hypervisor_version < 2 ? \
(void*)(domlist->v0) : \
(dom_interface_version < 5 ? \
(void*)(domlist->v2) : \
(void*)(domlist->v2d5)))
#define XEN_GETDOMAININFO_SIZE \
(hypervisor_version < 2 ? \
sizeof(xen_v0_getdomaininfo) : \
(dom_interface_version < 5 ? \
sizeof(xen_v2_getdomaininfo) : \
sizeof(xen_v2d5_getdomaininfo)))
#define XEN_GETDOMAININFO_CLEAR(dominfo) \
(hypervisor_version < 2 ? \
memset(&(dominfo.v0), 0, sizeof(xen_v0_getdomaininfo)) : \
(dom_interface_version < 5 ? \
memset(&(dominfo.v2), 0, sizeof(xen_v2_getdomaininfo)) : \
memset(&(dominfo.v2d5), 0, sizeof(xen_v2d5_getdomaininfo))))
#define XEN_GETDOMAININFO_DOMAIN(dominfo) \
(hypervisor_version < 2 ? \
dominfo.v0.domain : \
(dom_interface_version < 5 ? \
dominfo.v2.domain : \
dominfo.v2d5.domain))
#define XEN_GETDOMAININFO_CPUTIME(dominfo) \
(hypervisor_version < 2 ? \
dominfo.v0.cpu_time : \
(dom_interface_version < 5 ? \
dominfo.v2.cpu_time : \
dominfo.v2d5.cpu_time))
#define XEN_GETDOMAININFO_CPUCOUNT(dominfo) \
(hypervisor_version < 2 ? \
dominfo.v0.nr_online_vcpus : \
(dom_interface_version < 5 ? \
dominfo.v2.nr_online_vcpus : \
dominfo.v2d5.nr_online_vcpus))
#define XEN_GETDOMAININFO_MAXCPUID(dominfo) \
(hypervisor_version < 2 ? \
dominfo.v0.max_vcpu_id : \
(dom_interface_version < 5 ? \
dominfo.v2.max_vcpu_id : \
dominfo.v2d5.max_vcpu_id))
#define XEN_GETDOMAININFO_FLAGS(dominfo) \
(hypervisor_version < 2 ? \
dominfo.v0.flags : \
(dom_interface_version < 5 ? \
dominfo.v2.flags : \
dominfo.v2d5.flags))
#define XEN_GETDOMAININFO_TOT_PAGES(dominfo) \
(hypervisor_version < 2 ? \
dominfo.v0.tot_pages : \
(dom_interface_version < 5 ? \
dominfo.v2.tot_pages : \
dominfo.v2d5.tot_pages))
#define XEN_GETDOMAININFO_MAX_PAGES(dominfo) \
(hypervisor_version < 2 ? \
dominfo.v0.max_pages : \
(dom_interface_version < 5 ? \
dominfo.v2.max_pages : \
dominfo.v2d5.max_pages))
#define XEN_GETDOMAININFO_UUID(dominfo) \
(hypervisor_version < 2 ? \
dominfo.v0.handle : \
(dom_interface_version < 5 ? \
dominfo.v2.handle : \
dominfo.v2d5.handle))
static int
lock_pages(void *addr, size_t len)
{
#ifdef __linux__
return (mlock(addr, len));
#elif defined(__sun)
return (0);
#endif
}
static int
unlock_pages(void *addr, size_t len)
{
#ifdef __linux__
return (munlock(addr, len));
#elif defined(__sun)
return (0);
#endif
}
struct xen_v0_getdomaininfolistop {
domid_t first_domain;
uint32_t max_domains;
struct xen_v0_getdomaininfo *buffer;
uint32_t num_domains;
};
typedef struct xen_v0_getdomaininfolistop xen_v0_getdomaininfolistop;
struct xen_v2_getdomaininfolistop {
domid_t first_domain;
uint32_t max_domains;
struct xen_v2_getdomaininfo *buffer;
uint32_t num_domains;
};
typedef struct xen_v2_getdomaininfolistop xen_v2_getdomaininfolistop;
/* As of HV version 2, sysctl version 3 the *buffer pointer is 64-bit aligned */
struct xen_v2s3_getdomaininfolistop {
domid_t first_domain;
uint32_t max_domains;
#ifdef __BIG_ENDIAN__
struct {
int __pad[(sizeof (long long) - sizeof (struct xen_v2d5_getdomaininfo *)) / sizeof (int)];
struct xen_v2d5_getdomaininfo *v;
} buffer;
#else
union {
struct xen_v2d5_getdomaininfo *v;
uint64_t pad ALIGN_64;
} buffer;
#endif
uint32_t num_domains;
};
typedef struct xen_v2s3_getdomaininfolistop xen_v2s3_getdomaininfolistop;
struct xen_v0_domainop {
domid_t domain;
};
typedef struct xen_v0_domainop xen_v0_domainop;
/*
* The information for a destroydomain system hypercall
*/
#define XEN_V0_OP_DESTROYDOMAIN 9
#define XEN_V1_OP_DESTROYDOMAIN 9
#define XEN_V2_OP_DESTROYDOMAIN 2
/*
* The information for a pausedomain system hypercall
*/
#define XEN_V0_OP_PAUSEDOMAIN 10
#define XEN_V1_OP_PAUSEDOMAIN 10
#define XEN_V2_OP_PAUSEDOMAIN 3
/*
* The information for an unpausedomain system hypercall
*/
#define XEN_V0_OP_UNPAUSEDOMAIN 11
#define XEN_V1_OP_UNPAUSEDOMAIN 11
#define XEN_V2_OP_UNPAUSEDOMAIN 4
/*
* The information for an setmaxmem system hypercall
*/
#define XEN_V0_OP_SETMAXMEM 28
#define XEN_V1_OP_SETMAXMEM 28
#define XEN_V2_OP_SETMAXMEM 11
struct xen_v0_setmaxmem {
domid_t domain;
uint64_t maxmem;
};
typedef struct xen_v0_setmaxmem xen_v0_setmaxmem;
typedef struct xen_v0_setmaxmem xen_v1_setmaxmem;
struct xen_v2_setmaxmem {
uint64_t maxmem;
};
typedef struct xen_v2_setmaxmem xen_v2_setmaxmem;
struct xen_v2d5_setmaxmem {
uint64_t maxmem ALIGN_64;
};
typedef struct xen_v2d5_setmaxmem xen_v2d5_setmaxmem;
/*
* The information for an setmaxvcpu system hypercall
*/
#define XEN_V0_OP_SETMAXVCPU 41
#define XEN_V1_OP_SETMAXVCPU 41
#define XEN_V2_OP_SETMAXVCPU 15
struct xen_v0_setmaxvcpu {
domid_t domain;
uint32_t maxvcpu;
};
typedef struct xen_v0_setmaxvcpu xen_v0_setmaxvcpu;
typedef struct xen_v0_setmaxvcpu xen_v1_setmaxvcpu;
struct xen_v2_setmaxvcpu {
uint32_t maxvcpu;
};
typedef struct xen_v2_setmaxvcpu xen_v2_setmaxvcpu;
/*
* The information for an setvcpumap system hypercall
* Note that between 1 and 2 the limitation to 64 physical CPU was lifted
* hence the difference in structures
*/
#define XEN_V0_OP_SETVCPUMAP 20
#define XEN_V1_OP_SETVCPUMAP 20
#define XEN_V2_OP_SETVCPUMAP 9
struct xen_v0_setvcpumap {
domid_t domain;
uint32_t vcpu;
cpumap_t cpumap;
};
typedef struct xen_v0_setvcpumap xen_v0_setvcpumap;
typedef struct xen_v0_setvcpumap xen_v1_setvcpumap;
struct xen_v2_cpumap {
uint8_t *bitmap;
uint32_t nr_cpus;
};
struct xen_v2_setvcpumap {
uint32_t vcpu;
struct xen_v2_cpumap cpumap;
};
typedef struct xen_v2_setvcpumap xen_v2_setvcpumap;
/* HV version 2, Dom version 5 requires 64-bit alignment */
struct xen_v2d5_cpumap {
#ifdef __BIG_ENDIAN__
struct {
int __pad[(sizeof (long long) - sizeof (uint8_t *)) / sizeof (int)];
uint8_t *v;
} bitmap;
#else
union {
uint8_t *v;
uint64_t pad ALIGN_64;
} bitmap;
#endif
uint32_t nr_cpus;
};
struct xen_v2d5_setvcpumap {
uint32_t vcpu;
struct xen_v2d5_cpumap cpumap;
};
typedef struct xen_v2d5_setvcpumap xen_v2d5_setvcpumap;
/*
* The information for an vcpuinfo system hypercall
*/
#define XEN_V0_OP_GETVCPUINFO 43
#define XEN_V1_OP_GETVCPUINFO 43
#define XEN_V2_OP_GETVCPUINFO 14
struct xen_v0_vcpuinfo {
domid_t domain; /* owner's domain */
uint32_t vcpu; /* the vcpu number */
uint8_t online; /* seen as on line */
uint8_t blocked; /* blocked on event */
uint8_t running; /* scheduled on CPU */
uint64_t cpu_time; /* nanosecond of CPU used */
uint32_t cpu; /* current mapping */
cpumap_t cpumap; /* deprecated in V2 */
};
typedef struct xen_v0_vcpuinfo xen_v0_vcpuinfo;
typedef struct xen_v0_vcpuinfo xen_v1_vcpuinfo;
struct xen_v2_vcpuinfo {
uint32_t vcpu; /* the vcpu number */
uint8_t online; /* seen as on line */
uint8_t blocked; /* blocked on event */
uint8_t running; /* scheduled on CPU */
uint64_t cpu_time; /* nanosecond of CPU used */
uint32_t cpu; /* current mapping */
};
typedef struct xen_v2_vcpuinfo xen_v2_vcpuinfo;
struct xen_v2d5_vcpuinfo {
uint32_t vcpu; /* the vcpu number */
uint8_t online; /* seen as on line */
uint8_t blocked; /* blocked on event */
uint8_t running; /* scheduled on CPU */
uint64_t cpu_time ALIGN_64; /* nanosecond of CPU used */
uint32_t cpu; /* current mapping */
};
typedef struct xen_v2d5_vcpuinfo xen_v2d5_vcpuinfo;
/*
* from V2 the pinning of a vcpu is read with a separate call
*/
#define XEN_V2_OP_GETVCPUMAP 25
typedef struct xen_v2_setvcpumap xen_v2_getvcpumap;
typedef struct xen_v2d5_setvcpumap xen_v2d5_getvcpumap;
/*
* from V2 we get the scheduler information
*/
#define XEN_V2_OP_GETSCHEDULERID 4
/*
* from V2 we get the available heap information
*/
#define XEN_V2_OP_GETAVAILHEAP 9
/*
* from V2 we get the scheduler parameter
*/
#define XEN_V2_OP_SCHEDULER 16
/* Scheduler types. */
#define XEN_SCHEDULER_SEDF 4
#define XEN_SCHEDULER_CREDIT 5
/* get/set scheduler parameters */
#define XEN_DOMCTL_SCHEDOP_putinfo 0
#define XEN_DOMCTL_SCHEDOP_getinfo 1
struct xen_v2_setschedinfo {
uint32_t sched_id;
uint32_t cmd;
union {
struct xen_domctl_sched_sedf {
uint64_t period ALIGN_64;
uint64_t slice ALIGN_64;
uint64_t latency ALIGN_64;
uint32_t extratime;
uint32_t weight;
} sedf;
struct xen_domctl_sched_credit {
uint16_t weight;
uint16_t cap;
} credit;
} u;
};
typedef struct xen_v2_setschedinfo xen_v2_setschedinfo;
typedef struct xen_v2_setschedinfo xen_v2_getschedinfo;
/*
* The hypercall operation structures also have changed on
* changeset 86d26e6ec89b
*/
/* the old structure */
struct xen_op_v0 {
uint32_t cmd;
uint32_t interface_version;
union {
xen_v0_getdomaininfolistop getdomaininfolist;
xen_v0_domainop domain;
xen_v0_setmaxmem setmaxmem;
xen_v0_setmaxvcpu setmaxvcpu;
xen_v0_setvcpumap setvcpumap;
xen_v0_vcpuinfo getvcpuinfo;
uint8_t padding[128];
} u;
};
typedef struct xen_op_v0 xen_op_v0;
typedef struct xen_op_v0 xen_op_v1;
/* the new structure for systems operations */
struct xen_op_v2_sys {
uint32_t cmd;
uint32_t interface_version;
union {
xen_v2_getdomaininfolistop getdomaininfolist;
xen_v2s3_getdomaininfolistop getdomaininfolists3;
xen_v2_getschedulerid getschedulerid;
xen_v2s4_availheap availheap;
xen_v2s5_availheap availheap5;
uint8_t padding[128];
} u;
};
typedef struct xen_op_v2_sys xen_op_v2_sys;
/* the new structure for domains operation */
struct xen_op_v2_dom {
uint32_t cmd;
uint32_t interface_version;
domid_t domain;
union {
xen_v2_setmaxmem setmaxmem;
xen_v2d5_setmaxmem setmaxmemd5;
xen_v2_setmaxvcpu setmaxvcpu;
xen_v2_setvcpumap setvcpumap;
xen_v2d5_setvcpumap setvcpumapd5;
xen_v2_vcpuinfo getvcpuinfo;
xen_v2d5_vcpuinfo getvcpuinfod5;
xen_v2_getvcpumap getvcpumap;
xen_v2d5_getvcpumap getvcpumapd5;
xen_v2_setschedinfo setschedinfo;
xen_v2_getschedinfo getschedinfo;
uint8_t padding[128];
} u;
};
typedef struct xen_op_v2_dom xen_op_v2_dom;
#ifdef __linux__
#define XEN_HYPERVISOR_SOCKET "/proc/xen/privcmd"
#define HYPERVISOR_CAPABILITIES "/sys/hypervisor/properties/capabilities"
#elif defined(__sun)
#define XEN_HYPERVISOR_SOCKET "/dev/xen/privcmd"
#else
#error "unsupported platform"
#endif
#ifndef PROXY
static unsigned long xenHypervisorGetMaxMemory(virDomainPtr domain);
#endif
#ifndef PROXY
struct xenUnifiedDriver xenHypervisorDriver = {
xenHypervisorOpen, /* open */
xenHypervisorClose, /* close */
xenHypervisorGetVersion, /* version */
NULL, /* hostname */
NULL, /* nodeGetInfo */
xenHypervisorGetCapabilities, /* getCapabilities */
xenHypervisorListDomains, /* listDomains */
xenHypervisorNumOfDomains, /* numOfDomains */
NULL, /* domainCreateXML */
xenHypervisorPauseDomain, /* domainSuspend */
xenHypervisorResumeDomain, /* domainResume */
NULL, /* domainShutdown */
NULL, /* domainReboot */
xenHypervisorDestroyDomain, /* domainDestroy */
xenHypervisorDomainGetOSType, /* domainGetOSType */
xenHypervisorGetMaxMemory, /* domainGetMaxMemory */
xenHypervisorSetMaxMemory, /* domainSetMaxMemory */
NULL, /* domainSetMemory */
xenHypervisorGetDomainInfo, /* domainGetInfo */
NULL, /* domainSave */
NULL, /* domainRestore */
NULL, /* domainCoreDump */
xenHypervisorSetVcpus, /* domainSetVcpus */
xenHypervisorPinVcpu, /* domainPinVcpu */
xenHypervisorGetVcpus, /* domainGetVcpus */
xenHypervisorGetVcpuMax, /* domainGetMaxVcpus */
NULL, /* listDefinedDomains */
NULL, /* numOfDefinedDomains */
NULL, /* domainCreate */
NULL, /* domainDefineXML */
NULL, /* domainUndefine */
NULL, /* domainAttachDevice */
NULL, /* domainDetachDevice */
NULL, /* domainGetAutostart */
NULL, /* domainSetAutostart */
xenHypervisorGetSchedulerType, /* domainGetSchedulerType */
xenHypervisorGetSchedulerParameters, /* domainGetSchedulerParameters */
xenHypervisorSetSchedulerParameters, /* domainSetSchedulerParameters */
};
#endif /* !PROXY */
#define virXenError(conn, code, fmt...) \
if (in_init == 0) \
virReportErrorHelper(conn, VIR_FROM_XEN, code, __FILE__, \
__FUNCTION__, __LINE__, fmt)
#ifndef PROXY
/**
* virXenErrorFunc:
* @conn: connection, if known
* @error: the error number
* @func: the function failing
* @info: extra information string
* @value: extra information number
*
* Handle an error at the xend daemon interface
*/
static void
virXenErrorFunc(virConnectPtr conn,
virErrorNumber error, const char *func, const char *info,
int value)
{
char fullinfo[1000];
const char *errmsg;
if ((error == VIR_ERR_OK) || (in_init != 0))
return;
errmsg =virErrorMsg(error, info);
if (func != NULL) {
snprintf(fullinfo, 999, "%s: %s", func, info);
fullinfo[999] = 0;
virRaiseError(conn, NULL, NULL, VIR_FROM_XEN, error, VIR_ERR_ERROR,
errmsg, fullinfo, NULL, value, 0, errmsg, fullinfo,
value);
} else {
virRaiseError(conn, NULL, NULL, VIR_FROM_XEN, error, VIR_ERR_ERROR,
errmsg, info, NULL, value, 0, errmsg, info,
value);
}
}
#endif /* PROXY */
/**
* xenHypervisorDoV0Op:
* @handle: the handle to the Xen hypervisor
* @op: pointer to the hypervisor operation structure
*
* Do an hypervisor operation though the old interface,
* this leads to an hypervisor call through ioctl.
*
* Returns 0 in case of success and -1 in case of error.
*/
static int
xenHypervisorDoV0Op(int handle, xen_op_v0 * op)
{
int ret;
v0_hypercall_t hc;
memset(&hc, 0, sizeof(hc));
op->interface_version = hv_version << 8;
hc.op = __HYPERVISOR_dom0_op;
hc.arg[0] = (unsigned long) op;
if (lock_pages(op, sizeof(dom0_op_t)) < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " locking");
return (-1);
}
ret = ioctl(handle, xen_ioctl_hypercall_cmd, (unsigned long) &hc);
if (ret < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " ioctl %d",
xen_ioctl_hypercall_cmd);
}
if (unlock_pages(op, sizeof(dom0_op_t)) < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " releasing");
ret = -1;
}
if (ret < 0)
return (-1);
return (0);
}
/**
* xenHypervisorDoV1Op:
* @handle: the handle to the Xen hypervisor
* @op: pointer to the hypervisor operation structure
*
* Do an hypervisor v1 operation, this leads to an hypervisor call through
* ioctl.
*
* Returns 0 in case of success and -1 in case of error.
*/
static int
xenHypervisorDoV1Op(int handle, xen_op_v1* op)
{
int ret;
hypercall_t hc;
memset(&hc, 0, sizeof(hc));
op->interface_version = DOM0_INTERFACE_VERSION;
hc.op = __HYPERVISOR_dom0_op;
hc.arg[0] = (unsigned long) op;
if (lock_pages(op, sizeof(dom0_op_t)) < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " locking");
return (-1);
}
ret = ioctl(handle, xen_ioctl_hypercall_cmd, (unsigned long) &hc);
if (ret < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " ioctl %d",
xen_ioctl_hypercall_cmd);
}
if (unlock_pages(op, sizeof(dom0_op_t)) < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " releasing");
ret = -1;
}
if (ret < 0)
return (-1);
return (0);
}
/**
* xenHypervisorDoV2Sys:
* @handle: the handle to the Xen hypervisor
* @op: pointer to the hypervisor operation structure
*
* Do an hypervisor v2 system operation, this leads to an hypervisor
* call through ioctl.
*
* Returns 0 in case of success and -1 in case of error.
*/
static int
xenHypervisorDoV2Sys(int handle, xen_op_v2_sys* op)
{
int ret;
hypercall_t hc;
memset(&hc, 0, sizeof(hc));
op->interface_version = sys_interface_version;
hc.op = __HYPERVISOR_sysctl;
hc.arg[0] = (unsigned long) op;
if (lock_pages(op, sizeof(dom0_op_t)) < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " locking");
return (-1);
}
ret = ioctl(handle, xen_ioctl_hypercall_cmd, (unsigned long) &hc);
if (ret < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " sys ioctl %d",
xen_ioctl_hypercall_cmd);
}
if (unlock_pages(op, sizeof(dom0_op_t)) < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " releasing");
ret = -1;
}
if (ret < 0)
return (-1);
return (0);
}
/**
* xenHypervisorDoV2Dom:
* @handle: the handle to the Xen hypervisor
* @op: pointer to the hypervisor domain operation structure
*
* Do an hypervisor v2 domain operation, this leads to an hypervisor
* call through ioctl.
*
* Returns 0 in case of success and -1 in case of error.
*/
static int
xenHypervisorDoV2Dom(int handle, xen_op_v2_dom* op)
{
int ret;
hypercall_t hc;
memset(&hc, 0, sizeof(hc));
op->interface_version = dom_interface_version;
hc.op = __HYPERVISOR_domctl;
hc.arg[0] = (unsigned long) op;
if (lock_pages(op, sizeof(dom0_op_t)) < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " locking");
return (-1);
}
ret = ioctl(handle, xen_ioctl_hypercall_cmd, (unsigned long) &hc);
if (ret < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " ioctl %d",
xen_ioctl_hypercall_cmd);
}
if (unlock_pages(op, sizeof(dom0_op_t)) < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " releasing");
ret = -1;
}
if (ret < 0)
return (-1);
return (0);
}
/**
* virXen_getdomaininfolist:
* @handle: the hypervisor handle
* @first_domain: first domain in the range
* @maxids: maximum number of domains to list
* @dominfos: output structures
*
* Do a low level hypercall to list existing domains information
*
* Returns the number of domains or -1 in case of failure
*/
static int
virXen_getdomaininfolist(int handle, int first_domain, int maxids,
xen_getdomaininfolist *dominfos)
{
int ret = -1;
if (lock_pages(XEN_GETDOMAININFOLIST_DATA(dominfos),
XEN_GETDOMAININFO_SIZE * maxids) < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " locking");
return (-1);
}
if (hypervisor_version > 1) {
xen_op_v2_sys op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V2_OP_GETDOMAININFOLIST;
if (sys_interface_version < 3) {
op.u.getdomaininfolist.first_domain = (domid_t) first_domain;
op.u.getdomaininfolist.max_domains = maxids;
op.u.getdomaininfolist.buffer = dominfos->v2;
op.u.getdomaininfolist.num_domains = maxids;
} else {
op.u.getdomaininfolists3.first_domain = (domid_t) first_domain;
op.u.getdomaininfolists3.max_domains = maxids;
op.u.getdomaininfolists3.buffer.v = dominfos->v2d5;
op.u.getdomaininfolists3.num_domains = maxids;
}
ret = xenHypervisorDoV2Sys(handle, &op);
if (ret == 0) {
if (sys_interface_version < 3)
ret = op.u.getdomaininfolist.num_domains;
else
ret = op.u.getdomaininfolists3.num_domains;
}
} else if (hypervisor_version == 1) {
xen_op_v1 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V1_OP_GETDOMAININFOLIST;
op.u.getdomaininfolist.first_domain = (domid_t) first_domain;
op.u.getdomaininfolist.max_domains = maxids;
op.u.getdomaininfolist.buffer = dominfos->v0;
op.u.getdomaininfolist.num_domains = maxids;
ret = xenHypervisorDoV1Op(handle, &op);
if (ret == 0)
ret = op.u.getdomaininfolist.num_domains;
} else if (hypervisor_version == 0) {
xen_op_v0 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V0_OP_GETDOMAININFOLIST;
op.u.getdomaininfolist.first_domain = (domid_t) first_domain;
op.u.getdomaininfolist.max_domains = maxids;
op.u.getdomaininfolist.buffer = dominfos->v0;
op.u.getdomaininfolist.num_domains = maxids;
ret = xenHypervisorDoV0Op(handle, &op);
if (ret == 0)
ret = op.u.getdomaininfolist.num_domains;
}
if (unlock_pages(XEN_GETDOMAININFOLIST_DATA(dominfos),
XEN_GETDOMAININFO_SIZE * maxids) < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " release");
ret = -1;
}
return(ret);
}
static int
virXen_getdomaininfo(int handle, int first_domain,
xen_getdomaininfo *dominfo) {
xen_getdomaininfolist dominfos;
if (hypervisor_version < 2) {
dominfos.v0 = &(dominfo->v0);
} else {
dominfos.v2 = &(dominfo->v2);
}
return virXen_getdomaininfolist(handle, first_domain, 1, &dominfos);
}
#ifndef PROXY
/**
* xenHypervisorGetSchedulerType:
* @domain: pointer to the Xen Hypervisor block
* @nparams:give a number of scheduler parameters.
*
* Do a low level hypercall to get scheduler type
*
* Returns scheduler name or NULL in case of failure
*/
char *
xenHypervisorGetSchedulerType(virDomainPtr domain, int *nparams)
{
char *schedulertype = NULL;
xenUnifiedPrivatePtr priv;
if ((domain == NULL) || (domain->conn == NULL)) {
virXenErrorFunc(NULL, VIR_ERR_INTERNAL_ERROR, __FUNCTION__,
"domain or conn is NULL", 0);
return NULL;
}
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0) {
virXenErrorFunc(domain->conn, VIR_ERR_INTERNAL_ERROR, __FUNCTION__,
"priv->handle invalid", 0);
return NULL;
}
if (domain->id < 0) {
virXenError(domain->conn, VIR_ERR_OPERATION_INVALID,
"%s", _("domain is not running"));
return NULL;
}
/*
* Support only dom_interface_version >=5
* (Xen3.1.0 or later)
* TODO: check on Xen 3.0.3
*/
if (dom_interface_version < 5) {
virXenErrorFunc(domain->conn, VIR_ERR_NO_XEN, __FUNCTION__,
"unsupported in dom interface < 5", 0);
return NULL;
}
if (hypervisor_version > 1) {
xen_op_v2_sys op;
int ret;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V2_OP_GETSCHEDULERID;
ret = xenHypervisorDoV2Sys(priv->handle, &op);
if (ret < 0)
return(NULL);
switch (op.u.getschedulerid.sched_id){
case XEN_SCHEDULER_SEDF:
schedulertype = strdup("sedf");
if (nparams)
*nparams = 6;
break;
case XEN_SCHEDULER_CREDIT:
schedulertype = strdup("credit");
if (nparams)
*nparams = 2;
break;
default:
break;
}
}
return schedulertype;
}
static const char *str_weight = "weight";
static const char *str_cap = "cap";
/**
* xenHypervisorGetSchedulerParameters:
* @domain: pointer to the Xen Hypervisor block
* @params: pointer to scheduler parameters.
* This memory area should be allocated before calling.
* @nparams:this parameter should be same as
* a given number of scheduler parameters.
* from xenHypervisorGetSchedulerType().
*
* Do a low level hypercall to get scheduler parameters
*
* Returns 0 or -1 in case of failure
*/
int
xenHypervisorGetSchedulerParameters(virDomainPtr domain,
virSchedParameterPtr params, int *nparams)
{
xenUnifiedPrivatePtr priv;
if ((domain == NULL) || (domain->conn == NULL)) {
virXenErrorFunc(NULL, VIR_ERR_INTERNAL_ERROR, __FUNCTION__,
"domain or conn is NULL", 0);
return -1;
}
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0) {
virXenErrorFunc(domain->conn, VIR_ERR_INTERNAL_ERROR, __FUNCTION__,
"priv->handle invalid", 0);
return -1;
}
if (domain->id < 0) {
virXenError(domain->conn, VIR_ERR_OPERATION_INVALID,
"%s", _("domain is not running"));
return -1;
}
/*
* Support only dom_interface_version >=5
* (Xen3.1.0 or later)
* TODO: check on Xen 3.0.3
*/
if (dom_interface_version < 5) {
virXenErrorFunc(domain->conn, VIR_ERR_NO_XEN, __FUNCTION__,
"unsupported in dom interface < 5", 0);
return -1;
}
if (hypervisor_version > 1) {
xen_op_v2_sys op_sys;
xen_op_v2_dom op_dom;
int ret;
memset(&op_sys, 0, sizeof(op_sys));
op_sys.cmd = XEN_V2_OP_GETSCHEDULERID;
ret = xenHypervisorDoV2Sys(priv->handle, &op_sys);
if (ret < 0)
return -1;
switch (op_sys.u.getschedulerid.sched_id){
case XEN_SCHEDULER_SEDF:
/* TODO: Implement for Xen/SEDF */
TODO
return(-1);
case XEN_SCHEDULER_CREDIT:
if (*nparams < 2)
return(-1);
memset(&op_dom, 0, sizeof(op_dom));
op_dom.cmd = XEN_V2_OP_SCHEDULER;
op_dom.domain = (domid_t) domain->id;
op_dom.u.getschedinfo.sched_id = XEN_SCHEDULER_CREDIT;
op_dom.u.getschedinfo.cmd = XEN_DOMCTL_SCHEDOP_getinfo;
ret = xenHypervisorDoV2Dom(priv->handle, &op_dom);
if (ret < 0)
return(-1);
strncpy (params[0].field, str_weight, VIR_DOMAIN_SCHED_FIELD_LENGTH);
params[0].field[VIR_DOMAIN_SCHED_FIELD_LENGTH-1] = '\0';
params[0].type = VIR_DOMAIN_SCHED_FIELD_UINT;
params[0].value.ui = op_dom.u.getschedinfo.u.credit.weight;
strncpy (params[1].field, str_cap, VIR_DOMAIN_SCHED_FIELD_LENGTH);
params[1].field[VIR_DOMAIN_SCHED_FIELD_LENGTH-1] = '\0';
params[1].type = VIR_DOMAIN_SCHED_FIELD_UINT;
params[1].value.ui = op_dom.u.getschedinfo.u.credit.cap;
*nparams = 2;
break;
default:
virXenErrorFunc(domain->conn, VIR_ERR_INVALID_ARG, __FUNCTION__,
"Unknown scheduler", op_sys.u.getschedulerid.sched_id);
return -1;
}
}
return 0;
}
/**
* xenHypervisorSetSchedulerParameters:
* @domain: pointer to the Xen Hypervisor block
* @nparams:give a number of scheduler setting parameters .
*
* Do a low level hypercall to set scheduler parameters
*
* Returns 0 or -1 in case of failure
*/
int
xenHypervisorSetSchedulerParameters(virDomainPtr domain,
virSchedParameterPtr params, int nparams)
{
int i;
unsigned int val;
xenUnifiedPrivatePtr priv;
char buf[256];
if ((domain == NULL) || (domain->conn == NULL)) {
virXenErrorFunc (NULL, VIR_ERR_INTERNAL_ERROR, __FUNCTION__,
"domain or conn is NULL", 0);
return -1;
}
if ((nparams == 0) || (params == NULL)) {
virXenErrorFunc (domain->conn, VIR_ERR_INVALID_ARG, __FUNCTION__,
"Noparameters given", 0);
return(-1);
}
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0) {
virXenErrorFunc(domain->conn, VIR_ERR_INTERNAL_ERROR, __FUNCTION__,
"priv->handle invalid", 0);
return -1;
}
if (domain->id < 0) {
virXenError(domain->conn, VIR_ERR_OPERATION_INVALID,
"%s", _("domain is not running"));
return -1;
}
/*
* Support only dom_interface_version >=5
* (Xen3.1.0 or later)
* TODO: check on Xen 3.0.3
*/
if (dom_interface_version < 5) {
virXenErrorFunc(domain->conn, VIR_ERR_NO_XEN, __FUNCTION__,
"unsupported in dom interface < 5", 0);
return -1;
}
if (hypervisor_version > 1) {
xen_op_v2_sys op_sys;
xen_op_v2_dom op_dom;
int ret;
memset(&op_sys, 0, sizeof(op_sys));
op_sys.cmd = XEN_V2_OP_GETSCHEDULERID;
ret = xenHypervisorDoV2Sys(priv->handle, &op_sys);
if (ret == -1) return -1;
switch (op_sys.u.getschedulerid.sched_id){
case XEN_SCHEDULER_SEDF:
/* TODO: Implement for Xen/SEDF */
TODO
return(-1);
case XEN_SCHEDULER_CREDIT: {
int weight_set = 0;
int cap_set = 0;
memset(&op_dom, 0, sizeof(op_dom));
op_dom.cmd = XEN_V2_OP_SCHEDULER;
op_dom.domain = (domid_t) domain->id;
op_dom.u.getschedinfo.sched_id = XEN_SCHEDULER_CREDIT;
op_dom.u.getschedinfo.cmd = XEN_DOMCTL_SCHEDOP_putinfo;
/*
* credit scheduler parameters
* following values do not change the parameters
*/
op_dom.u.getschedinfo.u.credit.weight = 0;
op_dom.u.getschedinfo.u.credit.cap = (uint16_t)~0U;
for (i = 0; i < nparams; i++) {
memset(&buf, 0, sizeof(buf));
if (STREQ (params[i].field, str_weight) &&
params[i].type == VIR_DOMAIN_SCHED_FIELD_UINT) {
val = params[i].value.ui;
if ((val < 1) || (val > USHRT_MAX)) {
snprintf(buf, sizeof(buf), _("Credit scheduler weight parameter (%d) is out of range (1-65535)"), val);
virXenErrorFunc (domain->conn, VIR_ERR_INVALID_ARG, __FUNCTION__, buf, val);
return(-1);
}
op_dom.u.getschedinfo.u.credit.weight = val;
weight_set = 1;
} else if (STREQ (params[i].field, str_cap) &&
params[i].type == VIR_DOMAIN_SCHED_FIELD_UINT) {
val = params[i].value.ui;
if (val > USHRT_MAX) {
snprintf(buf, sizeof(buf), _("Credit scheduler cap parameter (%d) is out of range (0-65535)"), val);
virXenErrorFunc (domain->conn, VIR_ERR_INVALID_ARG, __FUNCTION__, buf, val);
return(-1);
}
op_dom.u.getschedinfo.u.credit.cap = val;
cap_set = 1;
} else {
virXenErrorFunc (domain->conn, VIR_ERR_INVALID_ARG, __FUNCTION__,
"Credit scheduler accepts 'cap' and 'weight' integer parameters",
0);
return(-1);
}
}
ret = xenHypervisorDoV2Dom(priv->handle, &op_dom);
if (ret < 0)
return -1;
break;
}
default:
virXenErrorFunc(domain->conn, VIR_ERR_INVALID_ARG, __FUNCTION__,
"Unknown scheduler", op_sys.u.getschedulerid.sched_id);
return -1;
}
}
return 0;
}
int
xenHypervisorDomainBlockStats (virDomainPtr dom,
const char *path,
struct _virDomainBlockStats *stats)
{
#ifdef __linux__
xenUnifiedPrivatePtr priv;
int ret;
priv = (xenUnifiedPrivatePtr) dom->conn->privateData;
xenUnifiedLock(priv);
/* Need to lock because it hits the xenstore handle :-( */
ret = xenLinuxDomainBlockStats (priv, dom, path, stats);
xenUnifiedUnlock(priv);
return ret;
#else
virXenErrorFunc (dom->conn, VIR_ERR_NO_SUPPORT, __FUNCTION__,
"block statistics not supported on this platform",
dom->id);
return -1;
#endif
}
/* Paths have the form vif<domid>.<n> (this interface checks that
* <domid> is the real domain ID and returns an error if not).
*
* In future we may allow you to query bridge stats (virbrX or
* xenbrX), but that will probably be through a separate
* virNetwork interface, as yet not decided.
*/
int
xenHypervisorDomainInterfaceStats (virDomainPtr dom,
const char *path,
struct _virDomainInterfaceStats *stats)
{
#ifdef __linux__
int rqdomid, device;
/* Verify that the vif requested is one belonging to the current
* domain.
*/
if (sscanf (path, "vif%d.%d", &rqdomid, &device) != 2) {
virXenErrorFunc (dom->conn, VIR_ERR_INVALID_ARG, __FUNCTION__,
"invalid path, should be vif<domid>.<n>.", 0);
return -1;
}
if (rqdomid != dom->id) {
virXenErrorFunc (dom->conn, VIR_ERR_INVALID_ARG, __FUNCTION__,
"invalid path, vif<domid> should match this domain ID", 0);
return -1;
}
return linuxDomainInterfaceStats (dom->conn, path, stats);
#else
virXenErrorFunc (dom->conn, VIR_ERR_NO_SUPPORT, __FUNCTION__,
"/proc/net/dev: Interface not found", 0);
return -1;
#endif
}
/**
* virXen_pausedomain:
* @handle: the hypervisor handle
* @id: the domain id
*
* Do a low level hypercall to pause the domain
*
* Returns 0 or -1 in case of failure
*/
static int
virXen_pausedomain(int handle, int id)
{
int ret = -1;
if (hypervisor_version > 1) {
xen_op_v2_dom op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V2_OP_PAUSEDOMAIN;
op.domain = (domid_t) id;
ret = xenHypervisorDoV2Dom(handle, &op);
} else if (hypervisor_version == 1) {
xen_op_v1 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V1_OP_PAUSEDOMAIN;
op.u.domain.domain = (domid_t) id;
ret = xenHypervisorDoV1Op(handle, &op);
} else if (hypervisor_version == 0) {
xen_op_v0 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V0_OP_PAUSEDOMAIN;
op.u.domain.domain = (domid_t) id;
ret = xenHypervisorDoV0Op(handle, &op);
}
return(ret);
}
/**
* virXen_unpausedomain:
* @handle: the hypervisor handle
* @id: the domain id
*
* Do a low level hypercall to unpause the domain
*
* Returns 0 or -1 in case of failure
*/
static int
virXen_unpausedomain(int handle, int id)
{
int ret = -1;
if (hypervisor_version > 1) {
xen_op_v2_dom op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V2_OP_UNPAUSEDOMAIN;
op.domain = (domid_t) id;
ret = xenHypervisorDoV2Dom(handle, &op);
} else if (hypervisor_version == 1) {
xen_op_v1 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V1_OP_UNPAUSEDOMAIN;
op.u.domain.domain = (domid_t) id;
ret = xenHypervisorDoV1Op(handle, &op);
} else if (hypervisor_version == 0) {
xen_op_v0 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V0_OP_UNPAUSEDOMAIN;
op.u.domain.domain = (domid_t) id;
ret = xenHypervisorDoV0Op(handle, &op);
}
return(ret);
}
/**
* virXen_destroydomain:
* @handle: the hypervisor handle
* @id: the domain id
*
* Do a low level hypercall to destroy the domain
*
* Returns 0 or -1 in case of failure
*/
static int
virXen_destroydomain(int handle, int id)
{
int ret = -1;
if (hypervisor_version > 1) {
xen_op_v2_dom op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V2_OP_DESTROYDOMAIN;
op.domain = (domid_t) id;
ret = xenHypervisorDoV2Dom(handle, &op);
} else if (hypervisor_version == 1) {
xen_op_v1 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V1_OP_DESTROYDOMAIN;
op.u.domain.domain = (domid_t) id;
ret = xenHypervisorDoV1Op(handle, &op);
} else if (hypervisor_version == 0) {
xen_op_v0 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V0_OP_DESTROYDOMAIN;
op.u.domain.domain = (domid_t) id;
ret = xenHypervisorDoV0Op(handle, &op);
}
return(ret);
}
/**
* virXen_setmaxmem:
* @handle: the hypervisor handle
* @id: the domain id
* @memory: the amount of memory in kilobytes
*
* Do a low level hypercall to change the max memory amount
*
* Returns 0 or -1 in case of failure
*/
static int
virXen_setmaxmem(int handle, int id, unsigned long memory)
{
int ret = -1;
if (hypervisor_version > 1) {
xen_op_v2_dom op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V2_OP_SETMAXMEM;
op.domain = (domid_t) id;
if (dom_interface_version < 5)
op.u.setmaxmem.maxmem = memory;
else
op.u.setmaxmemd5.maxmem = memory;
ret = xenHypervisorDoV2Dom(handle, &op);
} else if (hypervisor_version == 1) {
xen_op_v1 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V1_OP_SETMAXMEM;
op.u.setmaxmem.domain = (domid_t) id;
op.u.setmaxmem.maxmem = memory;
ret = xenHypervisorDoV1Op(handle, &op);
} else if (hypervisor_version == 0) {
xen_op_v0 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V0_OP_SETMAXMEM;
op.u.setmaxmem.domain = (domid_t) id;
op.u.setmaxmem.maxmem = memory;
ret = xenHypervisorDoV0Op(handle, &op);
}
return(ret);
}
/**
* virXen_setmaxvcpus:
* @handle: the hypervisor handle
* @id: the domain id
* @vcpus: the numbers of vcpus
*
* Do a low level hypercall to change the max vcpus amount
*
* Returns 0 or -1 in case of failure
*/
static int
virXen_setmaxvcpus(int handle, int id, unsigned int vcpus)
{
int ret = -1;
if (hypervisor_version > 1) {
xen_op_v2_dom op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V2_OP_SETMAXVCPU;
op.domain = (domid_t) id;
op.u.setmaxvcpu.maxvcpu = vcpus;
ret = xenHypervisorDoV2Dom(handle, &op);
} else if (hypervisor_version == 1) {
xen_op_v1 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V1_OP_SETMAXVCPU;
op.u.setmaxvcpu.domain = (domid_t) id;
op.u.setmaxvcpu.maxvcpu = vcpus;
ret = xenHypervisorDoV1Op(handle, &op);
} else if (hypervisor_version == 0) {
xen_op_v0 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V0_OP_SETMAXVCPU;
op.u.setmaxvcpu.domain = (domid_t) id;
op.u.setmaxvcpu.maxvcpu = vcpus;
ret = xenHypervisorDoV0Op(handle, &op);
}
return(ret);
}
/**
* virXen_setvcpumap:
* @handle: the hypervisor handle
* @id: the domain id
* @vcpu: the vcpu to map
* @cpumap: the bitmap for this vcpu
* @maplen: the size of the bitmap in bytes
*
* Do a low level hypercall to change the pinning for vcpu
*
* Returns 0 or -1 in case of failure
*/
static int
virXen_setvcpumap(int handle, int id, unsigned int vcpu,
unsigned char * cpumap, int maplen)
{
int ret = -1;
unsigned char *new = NULL;
unsigned char *bitmap = NULL;
uint32_t nr_cpus;
if (hypervisor_version > 1) {
xen_op_v2_dom op;
if (lock_pages(cpumap, maplen) < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " locking");
return (-1);
}
memset(&op, 0, sizeof(op));
op.cmd = XEN_V2_OP_SETVCPUMAP;
op.domain = (domid_t) id;
/* The allocated memory to cpumap must be 'sizeof(uint64_t)' byte *
* for Xen, and also nr_cpus must be 'sizeof(uint64_t) * 8' */
if (maplen < 8) {
if (VIR_ALLOC_N(new, sizeof(uint64_t)) < 0) {
virReportOOMError(NULL);
return (-1);
}
memcpy(new, cpumap, maplen);
bitmap = new;
nr_cpus = sizeof(uint64_t) * 8;
} else {
bitmap = cpumap;
nr_cpus = maplen * 8;
}
if (dom_interface_version < 5) {
op.u.setvcpumap.vcpu = vcpu;
op.u.setvcpumap.cpumap.bitmap = bitmap;
op.u.setvcpumap.cpumap.nr_cpus = nr_cpus;
} else {
op.u.setvcpumapd5.vcpu = vcpu;
op.u.setvcpumapd5.cpumap.bitmap.v = bitmap;
op.u.setvcpumapd5.cpumap.nr_cpus = nr_cpus;
}
ret = xenHypervisorDoV2Dom(handle, &op);
VIR_FREE(new);
if (unlock_pages(cpumap, maplen) < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " release");
ret = -1;
}
} else {
cpumap_t xen_cpumap; /* limited to 64 CPUs in old hypervisors */
uint64_t *pm = &xen_cpumap;
int j;
if ((maplen > (int)sizeof(cpumap_t)) || (sizeof(cpumap_t) & 7))
return (-1);
memset(pm, 0, sizeof(cpumap_t));
for (j = 0; j < maplen; j++)
*(pm + (j / 8)) |= cpumap[j] << (8 * (j & 7));
if (hypervisor_version == 1) {
xen_op_v1 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V1_OP_SETVCPUMAP;
op.u.setvcpumap.domain = (domid_t) id;
op.u.setvcpumap.vcpu = vcpu;
op.u.setvcpumap.cpumap = xen_cpumap;
ret = xenHypervisorDoV1Op(handle, &op);
} else if (hypervisor_version == 0) {
xen_op_v0 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V0_OP_SETVCPUMAP;
op.u.setvcpumap.domain = (domid_t) id;
op.u.setvcpumap.vcpu = vcpu;
op.u.setvcpumap.cpumap = xen_cpumap;
ret = xenHypervisorDoV0Op(handle, &op);
}
}
return(ret);
}
#endif /* !PROXY*/
/**
* virXen_getvcpusinfo:
* @handle: the hypervisor handle
* @id: the domain id
* @vcpu: the vcpu to map
* @cpumap: the bitmap for this vcpu
* @maplen: the size of the bitmap in bytes
*
* Do a low level hypercall to change the pinning for vcpu
*
* Returns 0 or -1 in case of failure
*/
static int
virXen_getvcpusinfo(int handle, int id, unsigned int vcpu, virVcpuInfoPtr ipt,
unsigned char *cpumap, int maplen)
{
int ret = -1;
if (hypervisor_version > 1) {
xen_op_v2_dom op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V2_OP_GETVCPUINFO;
op.domain = (domid_t) id;
if (dom_interface_version < 5)
op.u.getvcpuinfo.vcpu = (uint16_t) vcpu;
else
op.u.getvcpuinfod5.vcpu = (uint16_t) vcpu;
ret = xenHypervisorDoV2Dom(handle, &op);
if (ret < 0)
return(-1);
ipt->number = vcpu;
if (dom_interface_version < 5) {
if (op.u.getvcpuinfo.online) {
if (op.u.getvcpuinfo.running)
ipt->state = VIR_VCPU_RUNNING;
if (op.u.getvcpuinfo.blocked)
ipt->state = VIR_VCPU_BLOCKED;
} else
ipt->state = VIR_VCPU_OFFLINE;
ipt->cpuTime = op.u.getvcpuinfo.cpu_time;
ipt->cpu = op.u.getvcpuinfo.online ? (int)op.u.getvcpuinfo.cpu : -1;
} else {
if (op.u.getvcpuinfod5.online) {
if (op.u.getvcpuinfod5.running)
ipt->state = VIR_VCPU_RUNNING;
if (op.u.getvcpuinfod5.blocked)
ipt->state = VIR_VCPU_BLOCKED;
} else
ipt->state = VIR_VCPU_OFFLINE;
ipt->cpuTime = op.u.getvcpuinfod5.cpu_time;
ipt->cpu = op.u.getvcpuinfod5.online ? (int)op.u.getvcpuinfod5.cpu : -1;
}
if ((cpumap != NULL) && (maplen > 0)) {
if (lock_pages(cpumap, maplen) < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " locking");
return (-1);
}
memset(cpumap, 0, maplen);
memset(&op, 0, sizeof(op));
op.cmd = XEN_V2_OP_GETVCPUMAP;
op.domain = (domid_t) id;
if (dom_interface_version < 5) {
op.u.getvcpumap.vcpu = vcpu;
op.u.getvcpumap.cpumap.bitmap = cpumap;
op.u.getvcpumap.cpumap.nr_cpus = maplen * 8;
} else {
op.u.getvcpumapd5.vcpu = vcpu;
op.u.getvcpumapd5.cpumap.bitmap.v = cpumap;
op.u.getvcpumapd5.cpumap.nr_cpus = maplen * 8;
}
ret = xenHypervisorDoV2Dom(handle, &op);
if (unlock_pages(cpumap, maplen) < 0) {
virXenError(NULL, VIR_ERR_XEN_CALL, " release");
ret = -1;
}
}
} else {
int mapl = maplen;
int cpu;
if (maplen > (int)sizeof(cpumap_t))
mapl = (int)sizeof(cpumap_t);
if (hypervisor_version == 1) {
xen_op_v1 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V1_OP_GETVCPUINFO;
op.u.getvcpuinfo.domain = (domid_t) id;
op.u.getvcpuinfo.vcpu = vcpu;
ret = xenHypervisorDoV1Op(handle, &op);
if (ret < 0)
return(-1);
ipt->number = vcpu;
if (op.u.getvcpuinfo.online) {
if (op.u.getvcpuinfo.running) ipt->state = VIR_VCPU_RUNNING;
if (op.u.getvcpuinfo.blocked) ipt->state = VIR_VCPU_BLOCKED;
}
else ipt->state = VIR_VCPU_OFFLINE;
ipt->cpuTime = op.u.getvcpuinfo.cpu_time;
ipt->cpu = op.u.getvcpuinfo.online ? (int)op.u.getvcpuinfo.cpu : -1;
if ((cpumap != NULL) && (maplen > 0)) {
for (cpu = 0; cpu < (mapl * 8); cpu++) {
if (op.u.getvcpuinfo.cpumap & ((uint64_t)1<<cpu))
VIR_USE_CPU(cpumap, cpu);
}
}
} else if (hypervisor_version == 0) {
xen_op_v1 op;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V0_OP_GETVCPUINFO;
op.u.getvcpuinfo.domain = (domid_t) id;
op.u.getvcpuinfo.vcpu = vcpu;
ret = xenHypervisorDoV0Op(handle, &op);
if (ret < 0)
return(-1);
ipt->number = vcpu;
if (op.u.getvcpuinfo.online) {
if (op.u.getvcpuinfo.running) ipt->state = VIR_VCPU_RUNNING;
if (op.u.getvcpuinfo.blocked) ipt->state = VIR_VCPU_BLOCKED;
}
else ipt->state = VIR_VCPU_OFFLINE;
ipt->cpuTime = op.u.getvcpuinfo.cpu_time;
ipt->cpu = op.u.getvcpuinfo.online ? (int)op.u.getvcpuinfo.cpu : -1;
if ((cpumap != NULL) && (maplen > 0)) {
for (cpu = 0; cpu < (mapl * 8); cpu++) {
if (op.u.getvcpuinfo.cpumap & ((uint64_t)1<<cpu))
VIR_USE_CPU(cpumap, cpu);
}
}
}
}
return(ret);
}
/**
* xenHypervisorInit:
*
* Initialize the hypervisor layer. Try to detect the kind of interface
* used i.e. pre or post changeset 10277
*/
int
xenHypervisorInit(void)
{
int fd, ret, cmd, errcode;
hypercall_t hc;
v0_hypercall_t v0_hc;
xen_getdomaininfo info;
virVcpuInfoPtr ipt = NULL;
if (initialized) {
if (hypervisor_version == -1)
return (-1);
return(0);
}
initialized = 1;
in_init = 1;
/* Compile regular expressions used by xenHypervisorGetCapabilities.
* Note that errors here are really internal errors since these
* regexps should never fail to compile.
*/
errcode = regcomp (&flags_hvm_rec, flags_hvm_re, REG_EXTENDED);
if (errcode != 0) {
char error[100];
regerror (errcode, &flags_hvm_rec, error, sizeof error);
regfree (&flags_hvm_rec);
virXenError (NULL, VIR_ERR_INTERNAL_ERROR, "%s", error);
in_init = 0;
return -1;
}
errcode = regcomp (&flags_pae_rec, flags_pae_re, REG_EXTENDED);
if (errcode != 0) {
char error[100];
regerror (errcode, &flags_pae_rec, error, sizeof error);
regfree (&flags_pae_rec);
regfree (&flags_hvm_rec);
virXenError (NULL, VIR_ERR_INTERNAL_ERROR, "%s", error);
in_init = 0;
return -1;
}
errcode = regcomp (&xen_cap_rec, xen_cap_re, REG_EXTENDED);
if (errcode != 0) {
char error[100];
regerror (errcode, &xen_cap_rec, error, sizeof error);
regfree (&xen_cap_rec);
regfree (&flags_pae_rec);
regfree (&flags_hvm_rec);
virXenError (NULL, VIR_ERR_INTERNAL_ERROR, "%s", error);
in_init = 0;
return -1;
}
/* Xen hypervisor version detection begins. */
ret = open(XEN_HYPERVISOR_SOCKET, O_RDWR);
if (ret < 0) {
hypervisor_version = -1;
return(-1);
}
fd = ret;
/*
* The size of the hypervisor call block changed July 2006
* this detect if we are using the new or old hypercall_t structure
*/
hc.op = __HYPERVISOR_xen_version;
hc.arg[0] = (unsigned long) XENVER_version;
hc.arg[1] = 0;
cmd = IOCTL_PRIVCMD_HYPERCALL;
ret = ioctl(fd, cmd, (unsigned long) &hc);
if ((ret != -1) && (ret != 0)) {
DEBUG("Using new hypervisor call: %X\n", ret);
hv_version = ret;
xen_ioctl_hypercall_cmd = cmd;
goto detect_v2;
}
#ifndef __sun
/*
* check if the old hypercall are actually working
*/
v0_hc.op = __HYPERVISOR_xen_version;
v0_hc.arg[0] = (unsigned long) XENVER_version;
v0_hc.arg[1] = 0;
cmd = _IOC(_IOC_NONE, 'P', 0, sizeof(v0_hypercall_t));
ret = ioctl(fd, cmd, (unsigned long) &v0_hc);
if ((ret != -1) && (ret != 0)) {
DEBUG("Using old hypervisor call: %X\n", ret);
hv_version = ret;
xen_ioctl_hypercall_cmd = cmd;
hypervisor_version = 0;
goto done;
}
#endif
/*
* we failed to make any hypercall
*/
hypervisor_version = -1;
virXenError(NULL, VIR_ERR_XEN_CALL, " ioctl %lu",
(unsigned long) IOCTL_PRIVCMD_HYPERCALL);
close(fd);
in_init = 0;
return(-1);
detect_v2:
/*
* The hypercalls were refactored into 3 different section in August 2006
* Try to detect if we are running a version post 3.0.2 with the new ones
* or the old ones
*/
hypervisor_version = 2;
if (VIR_ALLOC(ipt) < 0) {
virReportOOMError(NULL);
return(-1);
}
/* Currently consider RHEL5.0 Fedora7, xen-3.1, and xen-unstable */
sys_interface_version = 2; /* XEN_SYSCTL_INTERFACE_VERSION */
if (virXen_getdomaininfo(fd, 0, &info) == 1) {
/* RHEL 5.0 */
dom_interface_version = 3; /* XEN_DOMCTL_INTERFACE_VERSION */
if (virXen_getvcpusinfo(fd, 0, 0, ipt, NULL, 0) == 0){
DEBUG0("Using hypervisor call v2, sys ver2 dom ver3\n");
goto done;
}
/* Fedora 7 */
dom_interface_version = 4; /* XEN_DOMCTL_INTERFACE_VERSION */
if (virXen_getvcpusinfo(fd, 0, 0, ipt, NULL, 0) == 0){
DEBUG0("Using hypervisor call v2, sys ver2 dom ver4\n");
goto done;
}
}
sys_interface_version = 3; /* XEN_SYSCTL_INTERFACE_VERSION */
if (virXen_getdomaininfo(fd, 0, &info) == 1) {
/* xen-3.1 */
dom_interface_version = 5; /* XEN_DOMCTL_INTERFACE_VERSION */
if (virXen_getvcpusinfo(fd, 0, 0, ipt, NULL, 0) == 0){
DEBUG0("Using hypervisor call v2, sys ver3 dom ver5\n");
goto done;
}
}
sys_interface_version = 4; /* XEN_SYSCTL_INTERFACE_VERSION */
if (virXen_getdomaininfo(fd, 0, &info) == 1) {
/* Fedora 8 */
dom_interface_version = 5; /* XEN_DOMCTL_INTERFACE_VERSION */
if (virXen_getvcpusinfo(fd, 0, 0, ipt, NULL, 0) == 0){
DEBUG0("Using hypervisor call v2, sys ver4 dom ver5\n");
goto done;
}
}
sys_interface_version = 6; /* XEN_SYSCTL_INTERFACE_VERSION */
if (virXen_getdomaininfo(fd, 0, &info) == 1) {
/* Xen 3.2, Fedora 9 */
dom_interface_version = 5; /* XEN_DOMCTL_INTERFACE_VERSION */
if (virXen_getvcpusinfo(fd, 0, 0, ipt, NULL, 0) == 0){
DEBUG0("Using hypervisor call v2, sys ver6 dom ver5\n");
goto done;
}
}
hypervisor_version = 1;
sys_interface_version = -1;
if (virXen_getdomaininfo(fd, 0, &info) == 1) {
DEBUG0("Using hypervisor call v1\n");
goto done;
}
/*
* we failed to make the getdomaininfolist hypercall
*/
DEBUG0("Failed to find any Xen hypervisor method\n");
hypervisor_version = -1;
virXenError(NULL, VIR_ERR_XEN_CALL, " ioctl %lu",
(unsigned long)IOCTL_PRIVCMD_HYPERCALL);
close(fd);
in_init = 0;
VIR_FREE(ipt);
return(-1);
done:
close(fd);
in_init = 0;
VIR_FREE(ipt);
return(0);
}
/**
* xenHypervisorOpen:
* @conn: pointer to the connection block
* @name: URL for the target, NULL for local
* @flags: combination of virDrvOpenFlag(s)
*
* Connects to the Xen hypervisor.
*
* Returns 0 or -1 in case of error.
*/
virDrvOpenStatus
xenHypervisorOpen(virConnectPtr conn,
virConnectAuthPtr auth ATTRIBUTE_UNUSED,
int flags ATTRIBUTE_UNUSED)
{
int ret;
xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) conn->privateData;
if (initialized == 0)
if (xenHypervisorInit() == -1)
return -1;
priv->handle = -1;
ret = open(XEN_HYPERVISOR_SOCKET, O_RDWR);
if (ret < 0) {
virXenError(conn, VIR_ERR_NO_XEN, "%s", XEN_HYPERVISOR_SOCKET);
return (-1);
}
priv->handle = ret;
return(0);
}
/**
* xenHypervisorClose:
* @conn: pointer to the connection block
*
* Close the connection to the Xen hypervisor.
*
* Returns 0 in case of success or -1 in case of error.
*/
int
xenHypervisorClose(virConnectPtr conn)
{
int ret;
xenUnifiedPrivatePtr priv;
if (conn == NULL)
return (-1);
priv = (xenUnifiedPrivatePtr) conn->privateData;
if (priv->handle < 0)
return -1;
ret = close(priv->handle);
if (ret < 0)
return (-1);
return (0);
}
/**
* xenHypervisorGetVersion:
* @conn: pointer to the connection block
* @hvVer: where to store the version
*
* Call the hypervisor to extracts his own internal API version
*
* Returns 0 in case of success, -1 in case of error
*/
int
xenHypervisorGetVersion(virConnectPtr conn, unsigned long *hvVer)
{
xenUnifiedPrivatePtr priv;
if (conn == NULL)
return -1;
priv = (xenUnifiedPrivatePtr) conn->privateData;
if (priv->handle < 0 || hvVer == NULL)
return (-1);
*hvVer = (hv_version >> 16) * 1000000 + (hv_version & 0xFFFF) * 1000;
return(0);
}
struct guest_arch {
const char *model;
int bits;
int hvm;
int pae;
int nonpae;
int ia64_be;
};
static virCapsPtr
xenHypervisorBuildCapabilities(virConnectPtr conn,
const char *hostmachine,
int host_pae,
const char *hvm_type,
struct guest_arch *guest_archs,
int nr_guest_archs) {
virCapsPtr caps;
int i;
int hv_major = hv_version >> 16;
int hv_minor = hv_version & 0xFFFF;
if ((caps = virCapabilitiesNew(hostmachine, 1, 1)) == NULL)
goto no_memory;
virCapabilitiesSetMacPrefix(caps, (unsigned char[]){ 0x00, 0x16, 0x3e });
if (hvm_type && STRNEQ(hvm_type, "") &&
virCapabilitiesAddHostFeature(caps, hvm_type) < 0)
goto no_memory;
if (host_pae &&
virCapabilitiesAddHostFeature(caps, "pae") < 0)
goto no_memory;
if (virCapabilitiesAddHostMigrateTransport(caps,
"xenmigr") < 0)
goto no_memory;
if (sys_interface_version >= SYS_IFACE_MIN_VERS_NUMA) {
if (xenDaemonNodeGetTopology(conn, caps) != 0) {
virCapabilitiesFree(caps);
return NULL;
}
}
for (i = 0; i < nr_guest_archs; ++i) {
virCapsGuestPtr guest;
char const *const machines[] = {guest_archs[i].hvm ? "xenfv" : "xenpv"};
if ((guest = virCapabilitiesAddGuest(caps,
guest_archs[i].hvm ? "hvm" : "xen",
guest_archs[i].model,
guest_archs[i].bits,
(STREQ(hostmachine, "x86_64") ?
"/usr/lib64/xen/bin/qemu-dm" :
"/usr/lib/xen/bin/qemu-dm"),
(guest_archs[i].hvm ?
"/usr/lib/xen/boot/hvmloader" :
NULL),
1,
machines)) == NULL)
goto no_memory;
if (virCapabilitiesAddGuestDomain(guest,
"xen",
NULL,
NULL,
0,
NULL) == NULL)
goto no_memory;
if (guest_archs[i].pae &&
virCapabilitiesAddGuestFeature(guest,
"pae",
1,
0) == NULL)
goto no_memory;
if (guest_archs[i].nonpae &&
virCapabilitiesAddGuestFeature(guest,
"nonpae",
1,
0) == NULL)
goto no_memory;
if (guest_archs[i].ia64_be &&
virCapabilitiesAddGuestFeature(guest,
"ia64_be",
1,
0) == NULL)
goto no_memory;
if (guest_archs[i].hvm) {
if (virCapabilitiesAddGuestFeature(guest,
"acpi",
1, 1) == NULL)
goto no_memory;
// In Xen 3.1.0, APIC is always on and can't be toggled
if (virCapabilitiesAddGuestFeature(guest,
"apic",
1,
(hv_major > 3 &&
hv_minor > 0 ?
0 : 1)) == NULL)
goto no_memory;
}
}
return caps;
no_memory:
virCapabilitiesFree(caps);
return NULL;
}
#ifdef __sun
static int
get_cpu_flags(virConnectPtr conn, const char **hvm, int *pae, int *longmode)
{
struct {
uint32_t r_eax, r_ebx, r_ecx, r_edx;
} regs;
char tmpbuf[20];
int ret = 0;
int fd;
/* returns -1, errno 22 if in 32-bit mode */
*longmode = (sysinfo(SI_ARCHITECTURE_64, tmpbuf, sizeof(tmpbuf)) != -1);
if ((fd = open("/dev/cpu/self/cpuid", O_RDONLY)) == -1 ||
pread(fd, &regs, sizeof(regs), 0) != sizeof(regs)) {
char ebuf[1024];
virXenError(conn, VIR_ERR_SYSTEM_ERROR,
"couldn't read CPU flags: %s", virStrerror(errno, ebuf, sizeof ebuf));
goto out;
}
*pae = 0;
*hvm = "";
if (STREQLEN((const char *)&regs.r_ebx, "AuthcAMDenti", 12)) {
if (pread(fd, &regs, sizeof (regs), 0x80000001) == sizeof (regs)) {
/* Read secure virtual machine bit (bit 2 of ECX feature ID) */
if ((regs.r_ecx >> 2) & 1) {
*hvm = "svm";
}
if ((regs.r_edx >> 6) & 1)
*pae = 1;
}
} else if (STREQLEN((const char *)&regs.r_ebx, "GenuntelineI", 12)) {
if (pread(fd, &regs, sizeof (regs), 0x00000001) == sizeof (regs)) {
/* Read VMXE feature bit (bit 5 of ECX feature ID) */
if ((regs.r_ecx >> 5) & 1)
*hvm = "vmx";
if ((regs.r_edx >> 6) & 1)
*pae = 1;
}
}
ret = 1;
out:
if (fd != -1)
close(fd);
return ret;
}
static virCapsPtr
xenHypervisorMakeCapabilitiesSunOS(virConnectPtr conn)
{
struct guest_arch guest_arches[32];
int i = 0;
virCapsPtr caps = NULL;
struct utsname utsname;
int pae, longmode;
const char *hvm;
if (!get_cpu_flags(conn, &hvm, &pae, &longmode))
return NULL;
/* Really, this never fails - look at the man-page. */
uname (&utsname);
guest_arches[i].model = "i686";
guest_arches[i].bits = 32;
guest_arches[i].hvm = 0;
guest_arches[i].pae = pae;
guest_arches[i].nonpae = !pae;
guest_arches[i].ia64_be = 0;
i++;
if (longmode) {
guest_arches[i].model = "x86_64";
guest_arches[i].bits = 64;
guest_arches[i].hvm = 0;
guest_arches[i].pae = 0;
guest_arches[i].nonpae = 0;
guest_arches[i].ia64_be = 0;
i++;
}
if (hvm[0] != '\0') {
guest_arches[i].model = "i686";
guest_arches[i].bits = 32;
guest_arches[i].hvm = 1;
guest_arches[i].pae = pae;
guest_arches[i].nonpae = 1;
guest_arches[i].ia64_be = 0;
i++;
if (longmode) {
guest_arches[i].model = "x86_64";
guest_arches[i].bits = 64;
guest_arches[i].hvm = 1;
guest_arches[i].pae = 0;
guest_arches[i].nonpae = 0;
guest_arches[i].ia64_be = 0;
i++;
}
}
if ((caps = xenHypervisorBuildCapabilities(conn,
utsname.machine,
pae, hvm,
guest_arches, i)) == NULL)
virReportOOMError(NULL);
return caps;
}
#endif /* __sun */
/**
* xenHypervisorMakeCapabilitiesInternal:
* @conn: pointer to the connection block
* @cpuinfo: file handle containing /proc/cpuinfo data, or NULL
* @capabilities: file handle containing /sys/hypervisor/properties/capabilities data, or NULL
*
* Return the capabilities of this hypervisor.
*/
virCapsPtr
xenHypervisorMakeCapabilitiesInternal(virConnectPtr conn,
const char *hostmachine,
FILE *cpuinfo, FILE *capabilities)
{
char line[1024], *str, *token;
regmatch_t subs[4];
char *saveptr = NULL;
int i;
char hvm_type[4] = ""; /* "vmx" or "svm" (or "" if not in CPU). */
int host_pae = 0;
struct guest_arch guest_archs[32];
int nr_guest_archs = 0;
virCapsPtr caps = NULL;
memset(guest_archs, 0, sizeof(guest_archs));
/* /proc/cpuinfo: flags: Intel calls HVM "vmx", AMD calls it "svm".
* It's not clear if this will work on IA64, let alone other
* architectures and non-Linux. (XXX)
*/
if (cpuinfo) {
while (fgets (line, sizeof line, cpuinfo)) {
if (regexec (&flags_hvm_rec, line, sizeof(subs)/sizeof(regmatch_t), subs, 0) == 0
&& subs[0].rm_so != -1) {
strncpy (hvm_type,
&line[subs[1].rm_so], subs[1].rm_eo-subs[1].rm_so+1);
hvm_type[subs[1].rm_eo-subs[1].rm_so] = '\0';
} else if (regexec (&flags_pae_rec, line, 0, NULL, 0) == 0)
host_pae = 1;
}
}
/* Most of the useful info is in /sys/hypervisor/properties/capabilities
* which is documented in the code in xen-unstable.hg/xen/arch/.../setup.c.
*
* It is a space-separated list of supported guest architectures.
*
* For x86:
* TYP-VER-ARCH[p]
* ^ ^ ^ ^
* | | | +-- PAE supported
* | | +------- x86_32 or x86_64
* | +----------- the version of Xen, eg. "3.0"
* +--------------- "xen" or "hvm" for para or full virt respectively
*
* For PPC this file appears to be always empty (?)
*
* For IA64:
* TYP-VER-ARCH[be]
* ^ ^ ^ ^
* | | | +-- Big-endian supported
* | | +------- always "ia64"
* | +----------- the version of Xen, eg. "3.0"
* +--------------- "xen" or "hvm" for para or full virt respectively
*/
/* Expecting one line in this file - ignore any more. */
if ((capabilities) && (fgets (line, sizeof line, capabilities))) {
/* Split the line into tokens. strtok_r is OK here because we "own"
* this buffer. Parse out the features from each token.
*/
for (str = line, nr_guest_archs = 0;
nr_guest_archs < sizeof guest_archs / sizeof guest_archs[0]
&& (token = strtok_r (str, " ", &saveptr)) != NULL;
str = NULL) {
if (regexec (&xen_cap_rec, token, sizeof subs / sizeof subs[0],
subs, 0) == 0) {
int hvm = STRPREFIX(&token[subs[1].rm_so], "hvm");
const char *model;
int bits, pae = 0, nonpae = 0, ia64_be = 0;
if (STRPREFIX(&token[subs[2].rm_so], "x86_32")) {
model = "i686";
bits = 32;
if (subs[3].rm_so != -1 &&
STRPREFIX(&token[subs[3].rm_so], "p"))
pae = 1;
else
nonpae = 1;
}
else if (STRPREFIX(&token[subs[2].rm_so], "x86_64")) {
model = "x86_64";
bits = 64;
}
else if (STRPREFIX(&token[subs[2].rm_so], "ia64")) {
model = "ia64";
bits = 64;
if (subs[3].rm_so != -1 &&
STRPREFIX(&token[subs[3].rm_so], "be"))
ia64_be = 1;
}
else if (STRPREFIX(&token[subs[2].rm_so], "powerpc64")) {
model = "ppc64";
bits = 64;
} else {
/* XXX surely no other Xen archs exist */
continue;
}
/* Search for existing matching (model,hvm) tuple */
for (i = 0 ; i < nr_guest_archs ; i++) {
if (STREQ(guest_archs[i].model, model) &&
guest_archs[i].hvm == hvm) {
break;
}
}
/* Too many arch flavours - highly unlikely ! */
if (i >= ARRAY_CARDINALITY(guest_archs))
continue;
/* Didn't find a match, so create a new one */
if (i == nr_guest_archs)
nr_guest_archs++;
guest_archs[i].model = model;
guest_archs[i].bits = bits;
guest_archs[i].hvm = hvm;
/* Careful not to overwrite a previous positive
setting with a negative one here - some archs
can do both pae & non-pae, but Xen reports
separately capabilities so we're merging archs */
if (pae)
guest_archs[i].pae = pae;
if (nonpae)
guest_archs[i].nonpae = nonpae;
if (ia64_be)
guest_archs[i].ia64_be = ia64_be;
}
}
}
if ((caps = xenHypervisorBuildCapabilities(conn,
hostmachine,
host_pae,
hvm_type,
guest_archs,
nr_guest_archs)) == NULL)
goto no_memory;
return caps;
no_memory:
virReportOOMError(NULL);
virCapabilitiesFree(caps);
return NULL;
}
/**
* xenHypervisorMakeCapabilities:
*
* Return the capabilities of this hypervisor.
*/
virCapsPtr
xenHypervisorMakeCapabilities(virConnectPtr conn)
{
#ifdef __sun
return xenHypervisorMakeCapabilitiesSunOS(conn);
#else
virCapsPtr caps;
FILE *cpuinfo, *capabilities;
struct utsname utsname;
/* Really, this never fails - look at the man-page. */
uname (&utsname);
cpuinfo = fopen ("/proc/cpuinfo", "r");
if (cpuinfo == NULL) {
if (errno != ENOENT) {
virReportSystemError(conn, errno,
_("cannot read file %s"),
"/proc/cpuinfo");
return NULL;
}
}
capabilities = fopen ("/sys/hypervisor/properties/capabilities", "r");
if (capabilities == NULL) {
if (errno != ENOENT) {
fclose(cpuinfo);
virReportSystemError(conn, errno,
_("cannot read file %s"),
"/sys/hypervisor/properties/capabilities");
return NULL;
}
}
caps = xenHypervisorMakeCapabilitiesInternal(conn,
utsname.machine,
cpuinfo,
capabilities);
if (cpuinfo)
fclose(cpuinfo);
if (capabilities)
fclose(capabilities);
return caps;
#endif /* __sun */
}
/**
* xenHypervisorGetCapabilities:
* @conn: pointer to the connection block
*
* Return the capabilities of this hypervisor.
*/
char *
xenHypervisorGetCapabilities (virConnectPtr conn)
{
xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) conn->privateData;
char *xml;
if (!(xml = virCapabilitiesFormatXML(priv->caps))) {
virReportOOMError(conn);
return NULL;
}
return xml;
}
/**
* xenHypervisorNumOfDomains:
* @conn: pointer to the connection block
*
* Provides the number of active domains.
*
* Returns the number of domain found or -1 in case of error
*/
int
xenHypervisorNumOfDomains(virConnectPtr conn)
{
xen_getdomaininfolist dominfos;
int ret, nbids;
static int last_maxids = 2;
int maxids = last_maxids;
xenUnifiedPrivatePtr priv;
if (conn == NULL)
return -1;
priv = (xenUnifiedPrivatePtr) conn->privateData;
if (priv->handle < 0)
return (-1);
retry:
if (!(XEN_GETDOMAININFOLIST_ALLOC(dominfos, maxids))) {
virReportOOMError(conn);
return(-1);
}
XEN_GETDOMAININFOLIST_CLEAR(dominfos, maxids);
ret = virXen_getdomaininfolist(priv->handle, 0, maxids, &dominfos);
XEN_GETDOMAININFOLIST_FREE(dominfos);
if (ret < 0)
return (-1);
nbids = ret;
/* Can't possibly have more than 65,000 concurrent guests
* so limit how many times we try, to avoid increasing
* without bound & thus allocating all of system memory !
* XXX I'll regret this comment in a few years time ;-)
*/
if (nbids == maxids) {
if (maxids < 65000) {
last_maxids *= 2;
maxids *= 2;
goto retry;
}
nbids = -1;
}
if ((nbids < 0) || (nbids > maxids))
return(-1);
return(nbids);
}
/**
* xenHypervisorListDomains:
* @conn: pointer to the connection block
* @ids: array to collect the list of IDs of active domains
* @maxids: size of @ids
*
* Collect the list of active domains, and store their ID in @maxids
*
* Returns the number of domain found or -1 in case of error
*/
int
xenHypervisorListDomains(virConnectPtr conn, int *ids, int maxids)
{
xen_getdomaininfolist dominfos;
int ret, nbids, i;
xenUnifiedPrivatePtr priv;
if (conn == NULL)
return -1;
priv = (xenUnifiedPrivatePtr) conn->privateData;
if (priv->handle < 0 ||
(ids == NULL) || (maxids < 0))
return (-1);
if (maxids == 0)
return(0);
if (!(XEN_GETDOMAININFOLIST_ALLOC(dominfos, maxids))) {
virReportOOMError(conn);
return(-1);
}
XEN_GETDOMAININFOLIST_CLEAR(dominfos, maxids);
memset(ids, 0, maxids * sizeof(int));
ret = virXen_getdomaininfolist(priv->handle, 0, maxids, &dominfos);
if (ret < 0) {
XEN_GETDOMAININFOLIST_FREE(dominfos);
return (-1);
}
nbids = ret;
if ((nbids < 0) || (nbids > maxids)) {
XEN_GETDOMAININFOLIST_FREE(dominfos);
return(-1);
}
for (i = 0;i < nbids;i++) {
ids[i] = XEN_GETDOMAININFOLIST_DOMAIN(dominfos, i);
}
XEN_GETDOMAININFOLIST_FREE(dominfos);
return (nbids);
}
#ifndef PROXY
char *
xenHypervisorDomainGetOSType (virDomainPtr dom)
{
xenUnifiedPrivatePtr priv;
xen_getdomaininfo dominfo;
priv = (xenUnifiedPrivatePtr) dom->conn->privateData;
if (priv->handle < 0)
return (NULL);
/* HV's earlier than 3.1.0 don't include the HVM flags in guests status*/
if (hypervisor_version < 2 ||
dom_interface_version < 4)
return (NULL);
XEN_GETDOMAININFO_CLEAR(dominfo);
if (virXen_getdomaininfo(priv->handle, dom->id, &dominfo) < 0)
return (NULL);
if (XEN_GETDOMAININFO_DOMAIN(dominfo) != dom->id)
return (NULL);
if (XEN_GETDOMAININFO_FLAGS(dominfo) & DOMFLAGS_HVM)
return strdup("hvm");
return strdup("linux");
}
virDomainPtr
xenHypervisorLookupDomainByID(virConnectPtr conn,
int id)
{
xenUnifiedPrivatePtr priv;
xen_getdomaininfo dominfo;
virDomainPtr ret;
char *name;
priv = (xenUnifiedPrivatePtr) conn->privateData;
if (priv->handle < 0)
return (NULL);
XEN_GETDOMAININFO_CLEAR(dominfo);
if (virXen_getdomaininfo(priv->handle, id, &dominfo) < 0)
return (NULL);
if (XEN_GETDOMAININFO_DOMAIN(dominfo) != id)
return (NULL);
xenUnifiedLock(priv);
name = xenStoreDomainGetName(conn, id);
xenUnifiedUnlock(priv);
if (!name)
return (NULL);
ret = virGetDomain(conn, name, XEN_GETDOMAININFO_UUID(dominfo));
if (ret)
ret->id = id;
VIR_FREE(name);
return ret;
}
virDomainPtr
xenHypervisorLookupDomainByUUID(virConnectPtr conn,
const unsigned char *uuid)
{
xen_getdomaininfolist dominfos;
xenUnifiedPrivatePtr priv;
virDomainPtr ret;
char *name;
int maxids = 100, nids, i, id;
priv = (xenUnifiedPrivatePtr) conn->privateData;
if (priv->handle < 0)
return (NULL);
retry:
if (!(XEN_GETDOMAININFOLIST_ALLOC(dominfos, maxids))) {
virReportOOMError(conn);
return(NULL);
}
XEN_GETDOMAININFOLIST_CLEAR(dominfos, maxids);
nids = virXen_getdomaininfolist(priv->handle, 0, maxids, &dominfos);
if (nids < 0) {
XEN_GETDOMAININFOLIST_FREE(dominfos);
return (NULL);
}
/* Can't possibly have more than 65,000 concurrent guests
* so limit how many times we try, to avoid increasing
* without bound & thus allocating all of system memory !
* XXX I'll regret this comment in a few years time ;-)
*/
if (nids == maxids) {
XEN_GETDOMAININFOLIST_FREE(dominfos);
if (maxids < 65000) {
maxids *= 2;
goto retry;
}
return (NULL);
}
id = -1;
for (i = 0 ; i < nids ; i++) {
if (memcmp(XEN_GETDOMAININFOLIST_UUID(dominfos, i), uuid, VIR_UUID_BUFLEN) == 0) {
id = XEN_GETDOMAININFOLIST_DOMAIN(dominfos, i);
break;
}
}
XEN_GETDOMAININFOLIST_FREE(dominfos);
if (id == -1)
return (NULL);
xenUnifiedLock(priv);
name = xenStoreDomainGetName(conn, id);
xenUnifiedUnlock(priv);
if (!name)
return (NULL);
ret = virGetDomain(conn, name, uuid);
if (ret)
ret->id = id;
VIR_FREE(name);
return ret;
}
#endif
/**
* xenHypervisorGetMaxVcpus:
*
* Returns the maximum of CPU defined by Xen.
*/
int
xenHypervisorGetMaxVcpus(virConnectPtr conn,
const char *type ATTRIBUTE_UNUSED)
{
xenUnifiedPrivatePtr priv;
if (conn == NULL)
return -1;
priv = (xenUnifiedPrivatePtr) conn->privateData;
if (priv->handle < 0)
return (-1);
return MAX_VIRT_CPUS;
}
/**
* xenHypervisorGetDomMaxMemory:
* @conn: connection data
* @id: domain id
*
* Retrieve the maximum amount of physical memory allocated to a
* domain.
*
* Returns the memory size in kilobytes or 0 in case of error.
*/
unsigned long
xenHypervisorGetDomMaxMemory(virConnectPtr conn, int id)
{
xenUnifiedPrivatePtr priv;
xen_getdomaininfo dominfo;
int ret;
if (conn == NULL)
return 0;
priv = (xenUnifiedPrivatePtr) conn->privateData;
if (priv->handle < 0)
return 0;
if (kb_per_pages == 0) {
kb_per_pages = sysconf(_SC_PAGESIZE) / 1024;
if (kb_per_pages <= 0)
kb_per_pages = 4;
}
XEN_GETDOMAININFO_CLEAR(dominfo);
ret = virXen_getdomaininfo(priv->handle, id, &dominfo);
if ((ret < 0) || (XEN_GETDOMAININFO_DOMAIN(dominfo) != id))
return (0);
return((unsigned long) XEN_GETDOMAININFO_MAX_PAGES(dominfo) * kb_per_pages);
}
#ifndef PROXY
/**
* xenHypervisorGetMaxMemory:
* @domain: a domain object or NULL
*
* Retrieve the maximum amount of physical memory allocated to a
* domain. If domain is NULL, then this get the amount of memory reserved
* to Domain0 i.e. the domain where the application runs.
*
* Returns the memory size in kilobytes or 0 in case of error.
*/
static unsigned long
xenHypervisorGetMaxMemory(virDomainPtr domain)
{
xenUnifiedPrivatePtr priv;
if ((domain == NULL) || (domain->conn == NULL))
return 0;
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0 || domain->id < 0)
return (0);
return(xenHypervisorGetDomMaxMemory(domain->conn, domain->id));
}
#endif
/**
* xenHypervisorGetDomInfo:
* @conn: connection data
* @id: the domain ID
* @info: the place where information should be stored
*
* Do an hypervisor call to get the related set of domain information.
*
* Returns 0 in case of success, -1 in case of error.
*/
int
xenHypervisorGetDomInfo(virConnectPtr conn, int id, virDomainInfoPtr info)
{
xenUnifiedPrivatePtr priv;
xen_getdomaininfo dominfo;
int ret;
uint32_t domain_flags, domain_state, domain_shutdown_cause;
if (kb_per_pages == 0) {
kb_per_pages = sysconf(_SC_PAGESIZE) / 1024;
if (kb_per_pages <= 0)
kb_per_pages = 4;
}
if (conn == NULL)
return -1;
priv = (xenUnifiedPrivatePtr) conn->privateData;
if (priv->handle < 0 || info == NULL)
return (-1);
memset(info, 0, sizeof(virDomainInfo));
XEN_GETDOMAININFO_CLEAR(dominfo);
ret = virXen_getdomaininfo(priv->handle, id, &dominfo);
if ((ret < 0) || (XEN_GETDOMAININFO_DOMAIN(dominfo) != id))
return (-1);
domain_flags = XEN_GETDOMAININFO_FLAGS(dominfo);
domain_flags &= ~DOMFLAGS_HVM; /* Mask out HVM flags */
domain_state = domain_flags & 0xFF; /* Mask out high bits */
switch (domain_state) {
case DOMFLAGS_DYING:
info->state = VIR_DOMAIN_SHUTDOWN;
break;
case DOMFLAGS_SHUTDOWN:
/* The domain is shutdown. Determine the cause. */
domain_shutdown_cause = domain_flags >> DOMFLAGS_SHUTDOWNSHIFT;
switch (domain_shutdown_cause) {
case SHUTDOWN_crash:
info->state = VIR_DOMAIN_CRASHED;
break;
default:
info->state = VIR_DOMAIN_SHUTOFF;
}
break;
case DOMFLAGS_PAUSED:
info->state = VIR_DOMAIN_PAUSED;
break;
case DOMFLAGS_BLOCKED:
info->state = VIR_DOMAIN_BLOCKED;
break;
case DOMFLAGS_RUNNING:
info->state = VIR_DOMAIN_RUNNING;
break;
default:
info->state = VIR_DOMAIN_NOSTATE;
}
/*
* the API brings back the cpu time in nanoseconds,
* convert to microseconds, same thing convert to
* kilobytes from page counts
*/
info->cpuTime = XEN_GETDOMAININFO_CPUTIME(dominfo);
info->memory = XEN_GETDOMAININFO_TOT_PAGES(dominfo) * kb_per_pages;
info->maxMem = XEN_GETDOMAININFO_MAX_PAGES(dominfo);
if(info->maxMem != UINT_MAX)
info->maxMem *= kb_per_pages;
info->nrVirtCpu = XEN_GETDOMAININFO_CPUCOUNT(dominfo);
return (0);
}
/**
* xenHypervisorGetDomainInfo:
* @domain: pointer to the domain block
* @info: the place where information should be stored
*
* Do an hypervisor call to get the related set of domain information.
*
* Returns 0 in case of success, -1 in case of error.
*/
int
xenHypervisorGetDomainInfo(virDomainPtr domain, virDomainInfoPtr info)
{
xenUnifiedPrivatePtr priv;
if ((domain == NULL) || (domain->conn == NULL))
return -1;
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0 || info == NULL ||
(domain->id < 0))
return (-1);
return(xenHypervisorGetDomInfo(domain->conn, domain->id, info));
}
#ifndef PROXY
/**
* xenHypervisorNodeGetCellsFreeMemory:
* @conn: pointer to the hypervisor connection
* @freeMems: pointer to the array of unsigned long long
* @startCell: index of first cell to return freeMems info on.
* @maxCells: Maximum number of cells for which freeMems information can
* be returned.
*
* This call returns the amount of free memory in one or more NUMA cells.
* The @freeMems array must be allocated by the caller and will be filled
* with the amount of free memory in kilobytes for each cell requested,
* starting with startCell (in freeMems[0]), up to either
* (startCell + maxCells), or the number of additional cells in the node,
* whichever is smaller.
*
* Returns the number of entries filled in freeMems, or -1 in case of error.
*/
int
xenHypervisorNodeGetCellsFreeMemory(virConnectPtr conn, unsigned long long *freeMems,
int startCell, int maxCells)
{
xen_op_v2_sys op_sys;
int i, j, ret;
xenUnifiedPrivatePtr priv;
if (conn == NULL) {
virXenErrorFunc (conn, VIR_ERR_INVALID_ARG, __FUNCTION__,
"invalid argument", 0);
return -1;
}
priv = conn->privateData;
if (priv->nbNodeCells < 0) {
virXenErrorFunc (conn, VIR_ERR_XEN_CALL, __FUNCTION__,
"cannot determine actual number of cells",0);
return(-1);
}
if ((maxCells < 1) || (startCell >= priv->nbNodeCells)) {
virXenErrorFunc (conn, VIR_ERR_INVALID_ARG, __FUNCTION__,
"invalid argument", 0);
return -1;
}
/*
* Support only sys_interface_version >=4
*/
if (sys_interface_version < SYS_IFACE_MIN_VERS_NUMA) {
virXenErrorFunc (conn, VIR_ERR_XEN_CALL, __FUNCTION__,
"unsupported in sys interface < 4", 0);
return -1;
}
if (priv->handle < 0) {
virXenErrorFunc (conn, VIR_ERR_INTERNAL_ERROR, __FUNCTION__,
"priv->handle invalid", 0);
return -1;
}
memset(&op_sys, 0, sizeof(op_sys));
op_sys.cmd = XEN_V2_OP_GETAVAILHEAP;
for (i = startCell, j = 0;(i < priv->nbNodeCells) && (j < maxCells);i++,j++) {
if (sys_interface_version >= 5)
op_sys.u.availheap5.node = i;
else
op_sys.u.availheap.node = i;
ret = xenHypervisorDoV2Sys(priv->handle, &op_sys);
if (ret < 0) {
return(-1);
}
if (sys_interface_version >= 5)
freeMems[j] = op_sys.u.availheap5.avail_bytes;
else
freeMems[j] = op_sys.u.availheap.avail_bytes;
}
return (j);
}
/**
* xenHypervisorPauseDomain:
* @domain: pointer to the domain block
*
* Do an hypervisor call to pause the given domain
*
* Returns 0 in case of success, -1 in case of error.
*/
int
xenHypervisorPauseDomain(virDomainPtr domain)
{
int ret;
xenUnifiedPrivatePtr priv;
if ((domain == NULL) || (domain->conn == NULL))
return -1;
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0 || domain->id < 0)
return (-1);
ret = virXen_pausedomain(priv->handle, domain->id);
if (ret < 0)
return (-1);
return (0);
}
/**
* xenHypervisorResumeDomain:
* @domain: pointer to the domain block
*
* Do an hypervisor call to resume the given domain
*
* Returns 0 in case of success, -1 in case of error.
*/
int
xenHypervisorResumeDomain(virDomainPtr domain)
{
int ret;
xenUnifiedPrivatePtr priv;
if ((domain == NULL) || (domain->conn == NULL))
return -1;
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0 || domain->id < 0)
return (-1);
ret = virXen_unpausedomain(priv->handle, domain->id);
if (ret < 0)
return (-1);
return (0);
}
/**
* xenHypervisorDestroyDomain:
* @domain: pointer to the domain block
*
* Do an hypervisor call to destroy the given domain
*
* Returns 0 in case of success, -1 in case of error.
*/
int
xenHypervisorDestroyDomain(virDomainPtr domain)
{
int ret;
xenUnifiedPrivatePtr priv;
if (domain == NULL || domain->conn == NULL)
return -1;
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0 || domain->id < 0)
return (-1);
ret = virXen_destroydomain(priv->handle, domain->id);
if (ret < 0)
return (-1);
return (0);
}
/**
* xenHypervisorSetMaxMemory:
* @domain: pointer to the domain block
* @memory: the max memory size in kilobytes.
*
* Do an hypervisor call to change the maximum amount of memory used
*
* Returns 0 in case of success, -1 in case of error.
*/
int
xenHypervisorSetMaxMemory(virDomainPtr domain, unsigned long memory)
{
int ret;
xenUnifiedPrivatePtr priv;
if (domain == NULL || domain->conn == NULL)
return -1;
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0 || domain->id < 0)
return (-1);
ret = virXen_setmaxmem(priv->handle, domain->id, memory);
if (ret < 0)
return (-1);
return (0);
}
#endif /* PROXY */
#ifndef PROXY
/**
* xenHypervisorSetVcpus:
* @domain: pointer to domain object
* @nvcpus: the new number of virtual CPUs for this domain
*
* Dynamically change the number of virtual CPUs used by the domain.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
xenHypervisorSetVcpus(virDomainPtr domain, unsigned int nvcpus)
{
int ret;
xenUnifiedPrivatePtr priv;
if (domain == NULL || domain->conn == NULL)
return -1;
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0 || domain->id < 0 || nvcpus < 1)
return (-1);
ret = virXen_setmaxvcpus(priv->handle, domain->id, nvcpus);
if (ret < 0)
return (-1);
return (0);
}
/**
* xenHypervisorPinVcpu:
* @domain: pointer to domain object
* @vcpu: virtual CPU number
* @cpumap: pointer to a bit map of real CPUs (in 8-bit bytes)
* @maplen: length of cpumap in bytes
*
* Dynamically change the real CPUs which can be allocated to a virtual CPU.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
xenHypervisorPinVcpu(virDomainPtr domain, unsigned int vcpu,
unsigned char *cpumap, int maplen)
{
int ret;
xenUnifiedPrivatePtr priv;
if (domain == NULL || domain->conn == NULL)
return -1;
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0 || (domain->id < 0) ||
(cpumap == NULL) || (maplen < 1))
return (-1);
ret = virXen_setvcpumap(priv->handle, domain->id, vcpu,
cpumap, maplen);
if (ret < 0)
return (-1);
return (0);
}
#endif
/**
* virDomainGetVcpus:
* @domain: pointer to domain object, or NULL for Domain0
* @info: pointer to an array of virVcpuInfo structures (OUT)
* @maxinfo: number of structures in info array
* @cpumaps: pointer to an bit map of real CPUs for all vcpus of this domain (in 8-bit bytes) (OUT)
* If cpumaps is NULL, then no cpumap information is returned by the API.
* It's assumed there is <maxinfo> cpumap in cpumaps array.
* The memory allocated to cpumaps must be (maxinfo * maplen) bytes
* (ie: calloc(maxinfo, maplen)).
* One cpumap inside cpumaps has the format described in virDomainPinVcpu() API.
* @maplen: number of bytes in one cpumap, from 1 up to size of CPU map in
* underlying virtualization system (Xen...).
*
* Extract information about virtual CPUs of domain, store it in info array
* and also in cpumaps if this pointer isn't NULL.
*
* Returns the number of info filled in case of success, -1 in case of failure.
*/
#ifndef PROXY
int
xenHypervisorGetVcpus(virDomainPtr domain, virVcpuInfoPtr info, int maxinfo,
unsigned char *cpumaps, int maplen)
{
xen_getdomaininfo dominfo;
int ret;
xenUnifiedPrivatePtr priv;
virVcpuInfoPtr ipt;
int nbinfo, i;
if (domain == NULL || domain->conn == NULL)
return -1;
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0 || (domain->id < 0) ||
(info == NULL) || (maxinfo < 1) ||
(sizeof(cpumap_t) & 7))
return (-1);
if ((cpumaps != NULL) && (maplen < 1))
return -1;
/* first get the number of virtual CPUs in this domain */
XEN_GETDOMAININFO_CLEAR(dominfo);
ret = virXen_getdomaininfo(priv->handle, domain->id,
&dominfo);
if ((ret < 0) || (XEN_GETDOMAININFO_DOMAIN(dominfo) != domain->id))
return (-1);
nbinfo = XEN_GETDOMAININFO_CPUCOUNT(dominfo) + 1;
if (nbinfo > maxinfo) nbinfo = maxinfo;
if (cpumaps != NULL)
memset(cpumaps, 0, maxinfo * maplen);
for (i = 0, ipt = info; i < nbinfo; i++, ipt++) {
if ((cpumaps != NULL) && (i < maxinfo)) {
ret = virXen_getvcpusinfo(priv->handle, domain->id, i,
ipt,
(unsigned char *)VIR_GET_CPUMAP(cpumaps, maplen, i),
maplen);
if (ret < 0)
return(-1);
} else {
ret = virXen_getvcpusinfo(priv->handle, domain->id, i,
ipt, NULL, 0);
if (ret < 0)
return(-1);
}
}
return nbinfo;
}
#endif /* PROXY */
/**
* xenHypervisorGetVcpuMax:
*
* Returns the maximum number of virtual CPUs supported for
* the guest VM. If the guest is inactive, this is the maximum
* of CPU defined by Xen. If the guest is running this reflect
* the maximum number of virtual CPUs the guest was booted with.
*/
int
xenHypervisorGetVcpuMax(virDomainPtr domain)
{
xen_getdomaininfo dominfo;
int ret;
int maxcpu;
xenUnifiedPrivatePtr priv;
if (domain == NULL || domain->conn == NULL)
return -1;
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0)
return (-1);
/* inactive domain */
if (domain->id < 0) {
maxcpu = MAX_VIRT_CPUS;
} else {
XEN_GETDOMAININFO_CLEAR(dominfo);
ret = virXen_getdomaininfo(priv->handle, domain->id,
&dominfo);
if ((ret < 0) || (XEN_GETDOMAININFO_DOMAIN(dominfo) != domain->id))
return (-1);
maxcpu = XEN_GETDOMAININFO_MAXCPUID(dominfo) + 1;
}
return maxcpu;
}
/**
* xenHavePrivilege()
*
* Return true if the current process should be able to connect to Xen.
*/
int
xenHavePrivilege()
{
#ifdef __sun
return priv_ineffect (PRIV_XVM_CONTROL);
#else
return access(XEN_HYPERVISOR_SOCKET, R_OK) == 0;
#endif
}
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