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libvirt/src/qemu/qemu_capabilities.c
Marc Hartmayer 62b2c2fcdd qemu: Check if virQEMUCapsNewCopy(...) has failed 
Check if virQEMUCapsNewCopy(...) has failed, thus a segmentation fault
in virQEMUCapsFilterByMachineType(...) will be avoided.

Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
2017-02-09 14:08:00 -05:00

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/*
* qemu_capabilities.c: QEMU capabilities generation
*
* Copyright (C) 2006-2016 Red Hat, Inc.
* Copyright (C) 2006 Daniel P. Berrange
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include <config.h>
#include "qemu_capabilities.h"
#include "viralloc.h"
#include "vircrypto.h"
#include "virlog.h"
#include "virerror.h"
#include "virfile.h"
#include "virpidfile.h"
#include "virprocess.h"
#include "nodeinfo.h"
#include "cpu/cpu.h"
#include "domain_conf.h"
#include "vircommand.h"
#include "virbitmap.h"
#include "virnodesuspend.h"
#include "virnuma.h"
#include "virhostcpu.h"
#include "qemu_monitor.h"
#include "virstring.h"
#include "qemu_hostdev.h"
#include "qemu_domain.h"
#define __QEMU_CAPSRIV_H_ALLOW__
#include "qemu_capspriv.h"
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/wait.h>
#include <stdarg.h>
#define VIR_FROM_THIS VIR_FROM_QEMU
VIR_LOG_INIT("qemu.qemu_capabilities");
/* While not public, these strings must not change. They
* are used in domain status files which are read on
* daemon restarts
*/
VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
"kqemu", /* 0 */
"vnc-colon",
"no-reboot",
"drive",
"drive-boot",
"name", /* 5 */
"uuid",
"domid",
"vnet-hdr",
"migrate-kvm-stdio",
"migrate-qemu-tcp", /* 10 */
"migrate-qemu-exec",
"drive-cache-v2",
"kvm",
"drive-format",
"vga", /* 15 */
"0.10",
"pci-device",
"mem-path",
"drive-serial",
"xen-domid", /* 20 */
"migrate-qemu-unix",
"chardev",
"enable-kvm",
"monitor-json",
"balloon", /* 25 */
"device",
"sdl",
"smp-topology",
"netdev",
"rtc", /* 30 */
"vhost-net",
"rtc-td-hack",
"no-hpet",
"no-kvm-pit",
"tdf", /* 35 */
"pci-configfd",
"nodefconfig",
"boot-menu",
"enable-kqemu",
"fsdev", /* 40 */
"nesting",
"name-process",
"drive-readonly",
"smbios-type",
"vga-qxl", /* 45 */
"spice",
"vga-none",
"migrate-qemu-fd",
"boot-index",
"hda-duplex", /* 50 */
"drive-aio",
"pci-multibus",
"pci-bootindex",
"ccid-emulated",
"ccid-passthru", /* 55 */
"chardev-spicevmc",
"device-spicevmc",
"virtio-tx-alg",
"device-qxl-vga",
"pci-multifunction", /* 60 */
"virtio-blk-pci.ioeventfd",
"sga",
"virtio-blk-pci.event_idx",
"virtio-net-pci.event_idx",
"cache-directsync", /* 65 */
"piix3-usb-uhci",
"piix4-usb-uhci",
"usb-ehci",
"ich9-usb-ehci1",
"vt82c686b-usb-uhci", /* 70 */
"pci-ohci",
"usb-redir",
"usb-hub",
"no-shutdown",
"cache-unsafe", /* 75 */
"rombar",
"ich9-ahci",
"no-acpi",
"fsdev-readonly",
"virtio-blk-pci.scsi", /* 80 */
"blk-sg-io",
"drive-copy-on-read",
"cpu-host",
"fsdev-writeout",
"drive-iotune", /* 85 */
"system_wakeup",
"scsi-disk.channel",
"scsi-block",
"transaction",
"block-job-sync", /* 90 */
"block-job-async",
"scsi-cd",
"ide-cd",
"no-user-config",
"hda-micro", /* 95 */
"dump-guest-memory",
"nec-usb-xhci",
"virtio-s390",
"balloon-event",
"bridge", /* 100 */
"lsi",
"virtio-scsi-pci",
"blockio",
"disable-s3",
"disable-s4", /* 105 */
"usb-redir.filter",
"ide-drive.wwn",
"scsi-disk.wwn",
"seccomp-sandbox",
"reboot-timeout", /* 110 */
"dump-guest-core",
"seamless-migration",
"block-commit",
"vnc",
"drive-mirror", /* 115 */
"usb-redir.bootindex",
"usb-host.bootindex",
"blockdev-snapshot-sync",
"qxl",
"VGA", /* 120 */
"cirrus-vga",
"vmware-svga",
"device-video-primary",
"s390-sclp",
"usb-serial", /* 125 */
"usb-net",
"add-fd",
"nbd-server",
"virtio-rng",
"rng-random", /* 130 */
"rng-egd",
"virtio-ccw",
"dtb",
"megasas",
"ipv6-migration", /* 135 */
"machine-opt",
"machine-usb-opt",
"tpm-passthrough",
"tpm-tis",
"nvram", /* 140 */
"pci-bridge",
"vfio-pci",
"vfio-pci.bootindex",
"scsi-generic",
"scsi-generic.bootindex", /* 145 */
"mem-merge",
"vnc-websocket",
"drive-discard",
"mlock",
"vnc-share-policy", /* 150 */
"device-del-event",
"dmi-to-pci-bridge",
"i440fx-pci-hole64-size",
"q35-pci-hole64-size",
"usb-storage", /* 155 */
"usb-storage.removable",
"virtio-mmio",
"ich9-intel-hda",
"kvm-pit-lost-tick-policy",
"boot-strict", /* 160 */
"pvpanic",
"enable-fips",
"spice-file-xfer-disable",
"spiceport",
"usb-kbd", /* 165 */
"host-pci-multidomain",
"msg-timestamp",
"active-commit",
"change-backing-file",
"memory-backend-ram", /* 170 */
"numa",
"memory-backend-file",
"usb-audio",
"rtc-reset-reinjection",
"splash-timeout", /* 175 */
"iothread",
"migrate-rdma",
"ivshmem",
"drive-iotune-max",
"VGA.vgamem_mb", /* 180 */
"vmware-svga.vgamem_mb",
"qxl.vgamem_mb",
"qxl-vga.vgamem_mb",
"pc-dimm",
"machine-vmport-opt", /* 185 */
"aes-key-wrap",
"dea-key-wrap",
"pci-serial",
"aarch64-off",
"vhost-user-multiqueue", /* 190 */
"migration-event",
"gpex-pcihost",
"ioh3420",
"x3130-upstream",
"xio3130-downstream", /* 195 */
"rtl8139",
"e1000",
"virtio-net",
"gic-version",
"incoming-defer", /* 200 */
"virtio-gpu",
"virtio-gpu.virgl",
"virtio-keyboard",
"virtio-mouse",
"virtio-tablet", /* 205 */
"virtio-input-host",
"chardev-file-append",
"ich9-disable-s3",
"ich9-disable-s4",
"vserport-change-event", /* 210 */
"virtio-balloon-pci.deflate-on-oom",
"mptsas1068",
"spice-gl",
"qxl.vram64_size_mb",
"qxl-vga.vram64_size_mb", /* 215 */
"chardev-logfile",
"debug-threads",
"secret",
"pxb",
"pxb-pcie", /* 220 */
"device-tray-moved-event",
"nec-usb-xhci-ports",
"virtio-scsi-pci.iothread",
"name-guest",
"qxl.max_outputs", /* 225 */
"qxl-vga.max_outputs",
"spice-unix",
"drive-detect-zeroes",
"tls-creds-x509",
"display", /* 230 */
"intel-iommu",
"smm",
"virtio-pci-disable-legacy",
"query-hotpluggable-cpus",
"virtio-net.rx_queue_size", /* 235 */
"machine-iommu",
"virtio-vga",
"drive-iotune-max-length",
"ivshmem-plain",
"ivshmem-doorbell", /* 240 */
"query-qmp-schema",
"gluster.debug_level",
"vhost-scsi",
"drive-iotune-group",
"query-cpu-model-expansion", /* 245 */
"virtio-net.host_mtu",
);
struct virQEMUCapsMachineType {
char *name;
char *alias;
unsigned int maxCpus;
bool hotplugCpus;
};
/*
* Update the XML parser/formatter when adding more
* information to this struct so that it gets cached
* correctly. It does not have to be ABI-stable, as
* the cache will be discarded & repopulated if the
* timestamp on the libvirtd binary changes.
*
* And don't forget to update virQEMUCapsNewCopy.
*/
struct _virQEMUCaps {
virObject object;
bool usedQMP;
char *binary;
time_t ctime;
virBitmapPtr flags;
unsigned int version;
unsigned int kvmVersion;
char *package;
virArch arch;
virDomainCapsCPUModelsPtr kvmCPUModels;
virDomainCapsCPUModelsPtr tcgCPUModels;
size_t nmachineTypes;
struct virQEMUCapsMachineType *machineTypes;
size_t ngicCapabilities;
virGICCapability *gicCapabilities;
qemuMonitorCPUModelInfoPtr hostCPUModelInfo;
/* Anything below is not stored in the cache since the values are
* re-computed from the other fields or external data sources every
* time we probe QEMU or load the results from the cache.
*/
virCPUDefPtr hostCPUModel;
};
struct virQEMUCapsSearchData {
virArch arch;
};
static virClassPtr virQEMUCapsClass;
static void virQEMUCapsDispose(void *obj);
static int virQEMUCapsOnceInit(void)
{
if (!(virQEMUCapsClass = virClassNew(virClassForObject(),
"virQEMUCaps",
sizeof(virQEMUCaps),
virQEMUCapsDispose)))
return -1;
return 0;
}
VIR_ONCE_GLOBAL_INIT(virQEMUCaps)
static virArch virQEMUCapsArchFromString(const char *arch)
{
if (STREQ(arch, "i386"))
return VIR_ARCH_I686;
if (STREQ(arch, "arm"))
return VIR_ARCH_ARMV7L;
if (STREQ(arch, "or32"))
return VIR_ARCH_OR32;
return virArchFromString(arch);
}
static const char *virQEMUCapsArchToString(virArch arch)
{
if (arch == VIR_ARCH_I686)
return "i386";
else if (arch == VIR_ARCH_ARMV7L)
return "arm";
else if (arch == VIR_ARCH_OR32)
return "or32";
return virArchToString(arch);
}
/* Checks whether a domain with @guest arch can run natively on @host.
*/
static bool
virQEMUCapsGuestIsNative(virArch host,
virArch guest)
{
if (host == guest)
return true;
if (host == VIR_ARCH_X86_64 && guest == VIR_ARCH_I686)
return true;
if (host == VIR_ARCH_AARCH64 && guest == VIR_ARCH_ARMV7L)
return true;
if (ARCH_IS_PPC64(host) && ARCH_IS_PPC64(guest))
return true;
return false;
}
/* Given a host and guest architectures, find a suitable QEMU target.
*
* This is meant to be used as a second attempt if qemu-system-$guestarch
* can't be found, eg. on a x86_64 host you want to use qemu-system-i386,
* if available, instead of qemu-system-x86_64 to run i686 guests */
static virArch
virQEMUCapsFindTarget(virArch hostarch,
virArch guestarch)
{
if (virQEMUCapsGuestIsNative(hostarch, guestarch))
guestarch = hostarch;
/* Both ppc64 and ppc64le guests can use the ppc64 target */
if (ARCH_IS_PPC64(guestarch))
guestarch = VIR_ARCH_PPC64;
return guestarch;
}
static virCommandPtr
virQEMUCapsProbeCommand(const char *qemu,
virQEMUCapsPtr qemuCaps,
uid_t runUid, gid_t runGid)
{
virCommandPtr cmd = virCommandNew(qemu);
if (qemuCaps) {
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_NO_USER_CONFIG))
virCommandAddArg(cmd, "-no-user-config");
else if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_NODEFCONFIG))
virCommandAddArg(cmd, "-nodefconfig");
}
virCommandAddEnvPassCommon(cmd);
virCommandClearCaps(cmd);
virCommandSetGID(cmd, runGid);
virCommandSetUID(cmd, runUid);
return cmd;
}
static void
virQEMUCapsSetDefaultMachine(virQEMUCapsPtr qemuCaps,
size_t defIdx)
{
struct virQEMUCapsMachineType tmp = qemuCaps->machineTypes[defIdx];
memmove(qemuCaps->machineTypes + 1,
qemuCaps->machineTypes,
sizeof(qemuCaps->machineTypes[0]) * defIdx);
qemuCaps->machineTypes[0] = tmp;
}
/* Format is:
* <machine> <desc> [(default)|(alias of <canonical>)]
*/
static int
virQEMUCapsParseMachineTypesStr(const char *output,
virQEMUCapsPtr qemuCaps)
{
const char *p = output;
const char *next;
size_t defIdx = 0;
do {
const char *t;
char *name;
char *canonical = NULL;
if ((next = strchr(p, '\n')))
++next;
if (STRPREFIX(p, "Supported machines are:"))
continue;
if (!(t = strchr(p, ' ')) || (next && t >= next))
continue;
if (VIR_STRNDUP(name, p, t - p) < 0)
return -1;
p = t;
if ((t = strstr(p, "(default)")) && (!next || t < next))
defIdx = qemuCaps->nmachineTypes;
if ((t = strstr(p, "(alias of ")) && (!next || t < next)) {
p = t + strlen("(alias of ");
if (!(t = strchr(p, ')')) || (next && t >= next)) {
VIR_FREE(name);
continue;
}
if (VIR_STRNDUP(canonical, p, t - p) < 0) {
VIR_FREE(name);
return -1;
}
}
if (VIR_REALLOC_N(qemuCaps->machineTypes, qemuCaps->nmachineTypes + 1) < 0) {
VIR_FREE(name);
VIR_FREE(canonical);
return -1;
}
qemuCaps->nmachineTypes++;
if (canonical) {
qemuCaps->machineTypes[qemuCaps->nmachineTypes-1].name = canonical;
qemuCaps->machineTypes[qemuCaps->nmachineTypes-1].alias = name;
} else {
qemuCaps->machineTypes[qemuCaps->nmachineTypes-1].name = name;
qemuCaps->machineTypes[qemuCaps->nmachineTypes-1].alias = NULL;
}
/* When parsing from command line we don't have information about maxCpus */
qemuCaps->machineTypes[qemuCaps->nmachineTypes-1].maxCpus = 0;
qemuCaps->machineTypes[qemuCaps->nmachineTypes-1].hotplugCpus = false;
} while ((p = next));
if (defIdx)
virQEMUCapsSetDefaultMachine(qemuCaps, defIdx);
return 0;
}
static int
virQEMUCapsProbeMachineTypes(virQEMUCapsPtr qemuCaps,
uid_t runUid, gid_t runGid)
{
char *output;
int ret = -1;
virCommandPtr cmd;
int status;
/* Make sure the binary we are about to try exec'ing exists.
* Technically we could catch the exec() failure, but that's
* in a sub-process so it's hard to feed back a useful error.
*/
if (!virFileIsExecutable(qemuCaps->binary)) {
virReportSystemError(errno, _("Cannot find QEMU binary %s"),
qemuCaps->binary);
return -1;
}
cmd = virQEMUCapsProbeCommand(qemuCaps->binary, qemuCaps, runUid, runGid);
virCommandAddArgList(cmd, "-M", "?", NULL);
virCommandSetOutputBuffer(cmd, &output);
/* Ignore failure from older qemu that did not understand '-M ?'. */
if (virCommandRun(cmd, &status) < 0)
goto cleanup;
if (virQEMUCapsParseMachineTypesStr(output, qemuCaps) < 0)
goto cleanup;
ret = 0;
cleanup:
VIR_FREE(output);
virCommandFree(cmd);
return ret;
}
typedef int
(*virQEMUCapsParseCPUModels)(const char *output,
virQEMUCapsPtr qemuCaps);
/* Format:
* <arch> <model>
* qemu-0.13 encloses some model names in []:
* <arch> [<model>]
*/
static int
virQEMUCapsParseX86Models(const char *output,
virQEMUCapsPtr qemuCaps)
{
const char *p = output;
const char *next;
virDomainCapsCPUModelsPtr cpus;
if (!(cpus = virDomainCapsCPUModelsNew(0)))
return -1;
do {
const char *t;
size_t len;
if ((next = strchr(p, '\n')))
next++;
if (!(t = strchr(p, ' ')) || (next && t >= next))
continue;
if (!STRPREFIX(p, "x86"))
continue;
p = t;
while (*p == ' ')
p++;
if (*p == '\0' || *p == '\n')
continue;
if (next)
len = next - p - 1;
else
len = strlen(p);
if (len > 2 && *p == '[' && p[len - 1] == ']') {
p++;
len -= 2;
}
if (virDomainCapsCPUModelsAdd(cpus, p, len,
VIR_DOMCAPS_CPU_USABLE_UNKNOWN) < 0)
goto error;
} while ((p = next));
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM)) {
virDomainCapsCPUModelsPtr kvmCPUs;
if (!(kvmCPUs = virDomainCapsCPUModelsCopy(cpus)))
goto error;
qemuCaps->kvmCPUModels = kvmCPUs;
}
qemuCaps->tcgCPUModels = cpus;
return 0;
error:
virObjectUnref(cpus);
return -1;
}
/* ppc64 parser.
* Format : PowerPC <machine> <description>
*/
static int
virQEMUCapsParsePPCModels(const char *output,
virQEMUCapsPtr qemuCaps)
{
const char *p = output;
const char *next;
virDomainCapsCPUModelsPtr cpus;
if (!(cpus = virDomainCapsCPUModelsNew(0)))
return -1;
do {
const char *t;
if ((next = strchr(p, '\n')))
next++;
if (!STRPREFIX(p, "PowerPC "))
continue;
/* Skip the preceding sub-string "PowerPC " */
p += 8;
/*Malformed string, does not obey the format 'PowerPC <model> <desc>'*/
if (!(t = strchr(p, ' ')) || (next && t >= next))
continue;
if (*p == '\0')
break;
if (*p == '\n')
continue;
if (virDomainCapsCPUModelsAdd(cpus, p, t - p - 1,
VIR_DOMCAPS_CPU_USABLE_UNKNOWN) < 0)
goto error;
} while ((p = next));
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM)) {
virDomainCapsCPUModelsPtr kvmCPUs;
if (!(kvmCPUs = virDomainCapsCPUModelsCopy(cpus)))
goto error;
qemuCaps->kvmCPUModels = kvmCPUs;
}
qemuCaps->tcgCPUModels = cpus;
return 0;
error:
virObjectUnref(cpus);
return -1;
}
static int
virQEMUCapsProbeCPUModels(virQEMUCapsPtr qemuCaps, uid_t runUid, gid_t runGid)
{
char *output = NULL;
int ret = -1;
virQEMUCapsParseCPUModels parse;
virCommandPtr cmd;
if (qemuCaps->arch == VIR_ARCH_I686 ||
qemuCaps->arch == VIR_ARCH_X86_64) {
parse = virQEMUCapsParseX86Models;
} else if ARCH_IS_PPC64(qemuCaps->arch) {
parse = virQEMUCapsParsePPCModels;
} else {
VIR_DEBUG("don't know how to parse %s CPU models",
virArchToString(qemuCaps->arch));
return 0;
}
cmd = virQEMUCapsProbeCommand(qemuCaps->binary, qemuCaps, runUid, runGid);
virCommandAddArgList(cmd, "-cpu", "?", NULL);
virCommandSetOutputBuffer(cmd, &output);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
if (parse(output, qemuCaps) < 0)
goto cleanup;
ret = 0;
cleanup:
VIR_FREE(output);
virCommandFree(cmd);
return ret;
}
static char *
virQEMUCapsFindBinary(const char *format,
const char *archstr)
{
char *ret = NULL;
char *binary = NULL;
if (virAsprintf(&binary, format, archstr) < 0)
goto out;
ret = virFindFileInPath(binary);
VIR_FREE(binary);
if (ret && virFileIsExecutable(ret))
goto out;
VIR_FREE(ret);
out:
return ret;
}
static char *
virQEMUCapsFindBinaryForArch(virArch hostarch,
virArch guestarch)
{
char *ret = NULL;
const char *archstr;
virArch target;
/* First attempt: try the guest architecture as it is */
archstr = virQEMUCapsArchToString(guestarch);
if ((ret = virQEMUCapsFindBinary("qemu-system-%s", archstr)) != NULL)
goto out;
/* Second attempt: try looking up by target instead */
target = virQEMUCapsFindTarget(hostarch, guestarch);
if (target != guestarch) {
archstr = virQEMUCapsArchToString(target);
if ((ret = virQEMUCapsFindBinary("qemu-system-%s", archstr)) != NULL)
goto out;
}
/* Third attempt, i686 only: try 'qemu' */
if (guestarch == VIR_ARCH_I686) {
if ((ret = virQEMUCapsFindBinary("%s", "qemu")) != NULL)
goto out;
}
out:
return ret;
}
static int
virQEMUCapsInitGuest(virCapsPtr caps,
virQEMUCapsCachePtr cache,
virArch hostarch,
virArch guestarch)
{
size_t i;
char *kvmbin = NULL;
char *binary = NULL;
virQEMUCapsPtr qemubinCaps = NULL;
virQEMUCapsPtr kvmbinCaps = NULL;
int ret = -1;
/* Check for existence of base emulator, or alternate base
* which can be used with magic cpu choice
*/
binary = virQEMUCapsFindBinaryForArch(hostarch, guestarch);
/* Ignore binary if extracting version info fails */
if (binary) {
if (!(qemubinCaps = virQEMUCapsCacheLookup(caps, cache, binary))) {
virResetLastError();
VIR_FREE(binary);
}
}
/* qemu-kvm/kvm binaries can only be used if
* - host & guest arches match
* - hostarch is x86_64 and guest arch is i686 (needs -cpu qemu32)
* - hostarch is aarch64 and guest arch is armv7l (needs -cpu aarch64=off)
* - hostarch and guestarch are both ppc64*
*/
if (virQEMUCapsGuestIsNative(hostarch, guestarch)) {
const char *kvmbins[] = {
"/usr/libexec/qemu-kvm", /* RHEL */
"qemu-kvm", /* Fedora */
"kvm", /* Debian/Ubuntu */
NULL,
};
/* x86 32-on-64 can be used with qemu-system-i386 and
* qemu-system-x86_64, so if we don't find a specific kvm binary,
* we can just fall back to the host arch native binary and
* everything works fine.
*
* arm is different in that 32-on-64 _only_ works with
* qemu-system-aarch64. So we have to add it to the kvmbins list
*/
if (hostarch == VIR_ARCH_AARCH64 && guestarch == VIR_ARCH_ARMV7L)
kvmbins[3] = "qemu-system-aarch64";
for (i = 0; i < ARRAY_CARDINALITY(kvmbins); ++i) {
if (!kvmbins[i])
continue;
kvmbin = virFindFileInPath(kvmbins[i]);
if (!kvmbin)
continue;
if (!(kvmbinCaps = virQEMUCapsCacheLookup(caps, cache, kvmbin))) {
virResetLastError();
VIR_FREE(kvmbin);
continue;
}
if (!binary) {
binary = kvmbin;
qemubinCaps = kvmbinCaps;
kvmbin = NULL;
kvmbinCaps = NULL;
}
break;
}
}
ret = virQEMUCapsInitGuestFromBinary(caps,
binary, qemubinCaps,
kvmbin, kvmbinCaps,
guestarch);
VIR_FREE(binary);
VIR_FREE(kvmbin);
virObjectUnref(qemubinCaps);
virObjectUnref(kvmbinCaps);
return ret;
}
int
virQEMUCapsInitGuestFromBinary(virCapsPtr caps,
const char *binary,
virQEMUCapsPtr qemubinCaps,
const char *kvmbin,
virQEMUCapsPtr kvmbinCaps,
virArch guestarch)
{
virCapsGuestPtr guest;
bool haskvm = false;
virCapsGuestMachinePtr *machines = NULL;
size_t nmachines = 0;
int ret = -1;
bool hasdisksnapshot = false;
if (!binary)
return 0;
if (virFileExists("/dev/kvm") &&
(virQEMUCapsGet(qemubinCaps, QEMU_CAPS_KVM) ||
virQEMUCapsGet(qemubinCaps, QEMU_CAPS_ENABLE_KVM) ||
kvmbin))
haskvm = true;
if (virQEMUCapsGetMachineTypesCaps(qemubinCaps, &nmachines, &machines) < 0)
goto cleanup;
/* We register kvm as the base emulator too, since we can
* just give -no-kvm to disable acceleration if required */
if ((guest = virCapabilitiesAddGuest(caps,
VIR_DOMAIN_OSTYPE_HVM,
guestarch,
binary,
NULL,
nmachines,
machines)) == NULL)
goto cleanup;
machines = NULL;
nmachines = 0;
/* CPU selection is always available, because all QEMU versions
* we support can use at least '-cpu host' */
if (!virCapabilitiesAddGuestFeature(guest, "cpuselection", true, false))
goto cleanup;
if (virQEMUCapsGet(qemubinCaps, QEMU_CAPS_BOOTINDEX) &&
!virCapabilitiesAddGuestFeature(guest, "deviceboot", true, false))
goto cleanup;
if (virQEMUCapsGet(qemubinCaps, QEMU_CAPS_DISK_SNAPSHOT))
hasdisksnapshot = true;
if (!virCapabilitiesAddGuestFeature(guest, "disksnapshot", hasdisksnapshot,
false))
goto cleanup;
if (virCapabilitiesAddGuestDomain(guest,
VIR_DOMAIN_VIRT_QEMU,
NULL,
NULL,
0,
NULL) == NULL)
goto cleanup;
if (haskvm) {
virCapsGuestDomainPtr dom;
if (kvmbin &&
virQEMUCapsGetMachineTypesCaps(kvmbinCaps, &nmachines, &machines) < 0)
goto cleanup;
if ((dom = virCapabilitiesAddGuestDomain(guest,
VIR_DOMAIN_VIRT_KVM,
kvmbin ? kvmbin : binary,
NULL,
nmachines,
machines)) == NULL) {
goto cleanup;
}
machines = NULL;
nmachines = 0;
}
if (((guestarch == VIR_ARCH_I686) ||
(guestarch == VIR_ARCH_X86_64)) &&
(virCapabilitiesAddGuestFeature(guest, "acpi", true, true) == NULL ||
virCapabilitiesAddGuestFeature(guest, "apic", true, false) == NULL))
goto cleanup;
if ((guestarch == VIR_ARCH_I686) &&
(virCapabilitiesAddGuestFeature(guest, "pae", true, false) == NULL ||
virCapabilitiesAddGuestFeature(guest, "nonpae", true, false) == NULL))
goto cleanup;
ret = 0;
cleanup:
virCapabilitiesFreeMachines(machines, nmachines);
return ret;
}
static int
virQEMUCapsInitCPU(virCapsPtr caps,
virArch arch)
{
virCPUDefPtr cpu = NULL;
virCPUDataPtr data = NULL;
virNodeInfo nodeinfo;
int ret = -1;
if (VIR_ALLOC(cpu) < 0)
goto error;
cpu->arch = arch;
if (nodeGetInfo(&nodeinfo))
goto error;
cpu->type = VIR_CPU_TYPE_HOST;
cpu->sockets = nodeinfo.sockets;
cpu->cores = nodeinfo.cores;
cpu->threads = nodeinfo.threads;
caps->host.cpu = cpu;
if (!(data = cpuNodeData(arch))
|| cpuDecode(cpu, data, NULL, 0, NULL) < 0)
goto cleanup;
ret = 0;
cleanup:
cpuDataFree(data);
return ret;
error:
virCPUDefFree(cpu);
goto cleanup;
}
static int
virQEMUCapsInitPages(virCapsPtr caps)
{
int ret = -1;
unsigned int *pages_size = NULL;
size_t npages;
if (virNumaGetPages(-1 /* Magic constant for overall info */,
&pages_size, NULL, NULL, &npages) < 0)
goto cleanup;
caps->host.pagesSize = pages_size;
pages_size = NULL;
caps->host.nPagesSize = npages;
npages = 0;
ret = 0;
cleanup:
VIR_FREE(pages_size);
return ret;
}
virCapsPtr virQEMUCapsInit(virQEMUCapsCachePtr cache)
{
virCapsPtr caps;
size_t i;
virArch hostarch = virArchFromHost();
if ((caps = virCapabilitiesNew(hostarch,
true, true)) == NULL)
goto error;
/* Some machines have problematic NUMA toplogy causing
* unexpected failures. We don't want to break the QEMU
* driver in this scenario, so log errors & carry on
*/
if (nodeCapsInitNUMA(caps) < 0) {
virCapabilitiesFreeNUMAInfo(caps);
VIR_WARN("Failed to query host NUMA topology, disabling NUMA capabilities");
}
if (virQEMUCapsInitCPU(caps, hostarch) < 0)
VIR_WARN("Failed to get host CPU");
/* Add the power management features of the host */
if (virNodeSuspendGetTargetMask(&caps->host.powerMgmt) < 0)
VIR_WARN("Failed to get host power management capabilities");
/* Add huge pages info */
if (virQEMUCapsInitPages(caps) < 0)
VIR_WARN("Failed to get pages info");
/* Add domain migration transport URIs */
virCapabilitiesAddHostMigrateTransport(caps, "tcp");
virCapabilitiesAddHostMigrateTransport(caps, "rdma");
/* QEMU can support pretty much every arch that exists,
* so just probe for them all - we gracefully fail
* if a qemu-system-$ARCH binary can't be found
*/
for (i = 0; i < VIR_ARCH_LAST; i++)
if (virQEMUCapsInitGuest(caps, cache,
hostarch,
i) < 0)
goto error;
return caps;
error:
virObjectUnref(caps);
return NULL;
}
static int
virQEMUCapsComputeCmdFlags(const char *help,
unsigned int version,
virQEMUCapsPtr qemuCaps,
bool check_yajl ATTRIBUTE_UNUSED)
{
const char *p;
const char *fsdev, *netdev;
const char *cache;
if (strstr(help, "-no-kvm"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_KVM);
if (strstr(help, "-enable-kvm"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_ENABLE_KVM);
if (strstr(help, ",process="))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NAME_PROCESS);
cache = strstr(help, "cache=");
if (cache && (p = strchr(cache, ']'))) {
if (memmem(cache, p - cache, "directsync", sizeof("directsync") - 1))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DRIVE_CACHE_DIRECTSYNC);
if (memmem(cache, p - cache, "unsafe", sizeof("unsafe") - 1))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DRIVE_CACHE_UNSAFE);
}
if (strstr(help, "aio=threads|native"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DRIVE_AIO);
if (strstr(help, "copy-on-read=on|off"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DRIVE_COPY_ON_READ);
if (strstr(help, "bps="))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DRIVE_IOTUNE);
if (strstr(help, "-display"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DISPLAY);
if ((p = strstr(help, "-vga")) && !strstr(help, "-std-vga")) {
const char *nl = strstr(p, "\n");
if ((p = strstr(p, "|none")) && p < nl)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_VGA_NONE);
}
if (strstr(help, "-spice"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_SPICE);
if (strstr(help, "-vnc"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_VNC);
if (strstr(help, "seamless-migration="))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_SEAMLESS_MIGRATION);
if (strstr(help, "boot=on"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DRIVE_BOOT);
if (strstr(help, "serial=s"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DRIVE_SERIAL);
if (strstr(help, "host=[seg:]bus"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_HOST_PCI_MULTIDOMAIN);
if (strstr(help, "-mem-path"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MEM_PATH);
if (strstr(help, "-chardev")) {
virQEMUCapsSet(qemuCaps, QEMU_CAPS_CHARDEV);
if (strstr(help, "-chardev spicevmc"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_CHARDEV_SPICEVMC);
if (strstr(help, "-chardev spiceport"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_CHARDEV_SPICEPORT);
}
if (strstr(help, "-nodefconfig"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NODEFCONFIG);
if (strstr(help, "-no-user-config"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NO_USER_CONFIG);
/* The trailing ' ' is important to avoid a bogus match */
if (strstr(help, "-rtc "))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_RTC);
/* to wit */
if (strstr(help, "-rtc-td-hack"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_RTC_TD_HACK);
if (strstr(help, "-no-hpet"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NO_HPET);
if (strstr(help, "-no-acpi"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NO_ACPI);
if (strstr(help, "-no-kvm-pit-reinjection"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NO_KVM_PIT);
if (strstr(help, "-tdf"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_TDF);
if (strstr(help, "-enable-nesting"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NESTING);
if (strstr(help, ",menu=on"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_BOOT_MENU);
if (strstr(help, ",reboot-timeout=rb_time"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_REBOOT_TIMEOUT);
if (strstr(help, ",splash-time=sp_time"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_SPLASH_TIMEOUT);
if ((fsdev = strstr(help, "-fsdev"))) {
virQEMUCapsSet(qemuCaps, QEMU_CAPS_FSDEV);
if (strstr(fsdev, "readonly"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_FSDEV_READONLY);
if (strstr(fsdev, "writeout"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_FSDEV_WRITEOUT);
}
if (strstr(help, "-smbios type"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_SMBIOS_TYPE);
if (strstr(help, "-sandbox"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_SECCOMP_SANDBOX);
if ((netdev = strstr(help, "-netdev"))) {
/* Disable -netdev on 0.12 since although it exists,
* the corresponding netdev_add/remove monitor commands
* do not, and we need them to be able to do hotplug.
* But see below about RHEL build. */
if (version >= 13000) {
if (strstr(netdev, "bridge"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NETDEV_BRIDGE);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NETDEV);
}
}
if (strstr(help, "-sdl"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_SDL);
if (strstr(help, ",vhost="))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_VHOST_NET);
/* Do not use -no-shutdown if qemu doesn't support it or SIGTERM handling
* is most likely buggy when used with -no-shutdown (which applies for qemu
* 0.14.* and 0.15.0)
*/
if (strstr(help, "-no-shutdown") && (version < 14000 || version > 15000))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NO_SHUTDOWN);
if (strstr(help, "dump-guest-core=on|off"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DUMP_GUEST_CORE);
if (strstr(help, "-dtb"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DTB);
if (strstr(help, "-machine"))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_OPT);
/* While JSON mode was available in 0.12.0, it was too
* incomplete to contemplate using. The 0.13.0 release
* is good enough to use, even though it lacks one or
* two features. This is also true of versions of qemu
* built for RHEL, labeled 0.12.1, but with extra text
* in the help output that mentions that features were
* backported for libvirt. The benefits of JSON mode now
* outweigh the downside.
*/
#if WITH_YAJL
if (version >= 13000) {
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MONITOR_JSON);
} else if (version >= 12000 &&
strstr(help, "libvirt")) {
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MONITOR_JSON);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NETDEV);
}
#else
/* Starting with qemu 0.15 and newer, upstream qemu no longer
* promises to keep the human interface stable, but requests that
* we use QMP (the JSON interface) for everything. If the user
* forgot to include YAJL libraries when building their own
* libvirt but is targeting a newer qemu, we are better off
* telling them to recompile (the spec file includes the
* dependency, so distros won't hit this). This check is
* also in m4/virt-yajl.m4 (see $with_yajl). */
if (version >= 15000 ||
(version >= 12000 && strstr(help, "libvirt"))) {
if (check_yajl) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("this qemu binary requires libvirt to be "
"compiled with yajl"));
return -1;
}
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NETDEV);
}
#endif
if (version >= 13000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_PCI_MULTIFUNCTION);
if (version >= 1001000) {
virQEMUCapsSet(qemuCaps, QEMU_CAPS_IPV6_MIGRATION);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_VNC_SHARE_POLICY);
}
return 0;
}
/* We parse the output of 'qemu -help' to get the QEMU
* version number. The first bit is easy, just parse
* 'QEMU PC emulator version x.y.z'
* or
* 'QEMU emulator version x.y.z'.
*
* With qemu-kvm, however, that is followed by a string
* in parenthesis as follows:
* - qemu-kvm-x.y.z in stable releases
* - kvm-XX for kvm versions up to kvm-85
* - qemu-kvm-devel-XX for kvm version kvm-86 and later
*
* For qemu-kvm versions before 0.10.z, we need to detect
* the KVM version number for some features. With 0.10.z
* and later, we just need the QEMU version number and
* whether it is KVM QEMU or mainline QEMU.
*/
#define QEMU_VERSION_STR_1 "QEMU emulator version"
#define QEMU_VERSION_STR_2 "QEMU PC emulator version"
#define QEMU_KVM_VER_PREFIX "(qemu-kvm-"
#define KVM_VER_PREFIX "(kvm-"
#define SKIP_BLANKS(p) do { while ((*(p) == ' ') || (*(p) == '\t')) (p)++; } while (0)
int virQEMUCapsParseHelpStr(const char *qemu,
const char *help,
virQEMUCapsPtr qemuCaps,
unsigned int *version,
bool *is_kvm,
unsigned int *kvm_version,
bool check_yajl,
const char *qmperr)
{
unsigned major, minor, micro;
const char *p = help;
char *strflags;
*version = *kvm_version = 0;
*is_kvm = false;
if (STRPREFIX(p, QEMU_VERSION_STR_1))
p += strlen(QEMU_VERSION_STR_1);
else if (STRPREFIX(p, QEMU_VERSION_STR_2))
p += strlen(QEMU_VERSION_STR_2);
else
goto fail;
SKIP_BLANKS(p);
major = virParseNumber(&p);
if (major == -1 || *p != '.')
goto fail;
++p;
minor = virParseNumber(&p);
if (minor == -1)
goto fail;
if (*p != '.') {
micro = 0;
} else {
++p;
micro = virParseNumber(&p);
if (micro == -1)
goto fail;
}
SKIP_BLANKS(p);
if (STRPREFIX(p, QEMU_KVM_VER_PREFIX)) {
*is_kvm = true;
p += strlen(QEMU_KVM_VER_PREFIX);
} else if (STRPREFIX(p, KVM_VER_PREFIX)) {
int ret;
*is_kvm = true;
p += strlen(KVM_VER_PREFIX);
ret = virParseNumber(&p);
if (ret == -1)
goto fail;
*kvm_version = ret;
}
*version = (major * 1000 * 1000) + (minor * 1000) + micro;
if (*version < 12000) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("QEMU version >= 0.12.00 is required, but %d.%d.%d found"),
major, minor, micro);
goto cleanup;
}
/* Refuse to parse -help output for QEMU releases >= 1.2.0 that should be
* using QMP probing.
*/
if (*version >= 1002000) {
if (qmperr && *qmperr) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("QEMU / QMP failed: %s"),
qmperr);
} else {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("QEMU %u.%u.%u is too new for help parsing"),
major, minor, micro);
}
goto cleanup;
}
if (virQEMUCapsComputeCmdFlags(help, *version,
qemuCaps, check_yajl) < 0)
goto cleanup;
strflags = virBitmapString(qemuCaps->flags);
VIR_DEBUG("Version %u.%u.%u, cooked version %u, flags %s",
major, minor, micro, *version, NULLSTR(strflags));
VIR_FREE(strflags);
if (*kvm_version)
VIR_DEBUG("KVM version %d detected", *kvm_version);
else if (*is_kvm)
VIR_DEBUG("qemu-kvm version %u.%u.%u detected", major, minor, micro);
return 0;
fail:
p = strchr(help, '\n');
if (!p)
p = strchr(help, '\0');
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse %s version number in '%.*s'"),
qemu, (int) (p - help), help);
cleanup:
return -1;
}
struct virQEMUCapsStringFlags {
const char *value;
int flag;
};
struct virQEMUCapsStringFlags virQEMUCapsCommands[] = {
{ "system_wakeup", QEMU_CAPS_WAKEUP },
{ "transaction", QEMU_CAPS_TRANSACTION },
{ "block_stream", QEMU_CAPS_BLOCKJOB_SYNC },
{ "block-stream", QEMU_CAPS_BLOCKJOB_ASYNC },
{ "dump-guest-memory", QEMU_CAPS_DUMP_GUEST_MEMORY },
{ "query-spice", QEMU_CAPS_SPICE },
{ "query-kvm", QEMU_CAPS_KVM },
{ "block-commit", QEMU_CAPS_BLOCK_COMMIT },
{ "query-vnc", QEMU_CAPS_VNC },
{ "drive-mirror", QEMU_CAPS_DRIVE_MIRROR },
{ "blockdev-snapshot-sync", QEMU_CAPS_DISK_SNAPSHOT },
{ "add-fd", QEMU_CAPS_ADD_FD },
{ "nbd-server-start", QEMU_CAPS_NBD_SERVER },
{ "change-backing-file", QEMU_CAPS_CHANGE_BACKING_FILE },
{ "rtc-reset-reinjection", QEMU_CAPS_RTC_RESET_REINJECTION },
{ "migrate-incoming", QEMU_CAPS_INCOMING_DEFER },
{ "query-hotpluggable-cpus", QEMU_CAPS_QUERY_HOTPLUGGABLE_CPUS },
{ "query-qmp-schema", QEMU_CAPS_QUERY_QMP_SCHEMA },
{ "query-cpu-model-expansion", QEMU_CAPS_QUERY_CPU_MODEL_EXPANSION},
};
struct virQEMUCapsStringFlags virQEMUCapsMigration[] = {
{ "rdma-pin-all", QEMU_CAPS_MIGRATE_RDMA },
};
struct virQEMUCapsStringFlags virQEMUCapsEvents[] = {
{ "BALLOON_CHANGE", QEMU_CAPS_BALLOON_EVENT },
{ "SPICE_MIGRATE_COMPLETED", QEMU_CAPS_SEAMLESS_MIGRATION },
{ "DEVICE_DELETED", QEMU_CAPS_DEVICE_DEL_EVENT },
{ "MIGRATION", QEMU_CAPS_MIGRATION_EVENT },
{ "VSERPORT_CHANGE", QEMU_CAPS_VSERPORT_CHANGE },
{ "DEVICE_TRAY_MOVED", QEMU_CAPS_DEVICE_TRAY_MOVED },
};
struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[] = {
{ "hda-duplex", QEMU_CAPS_HDA_DUPLEX },
{ "hda-micro", QEMU_CAPS_HDA_MICRO },
{ "ccid-card-emulated", QEMU_CAPS_CCID_EMULATED },
{ "ccid-card-passthru", QEMU_CAPS_CCID_PASSTHRU },
{ "piix3-usb-uhci", QEMU_CAPS_PIIX3_USB_UHCI },
{ "piix4-usb-uhci", QEMU_CAPS_PIIX4_USB_UHCI },
{ "usb-ehci", QEMU_CAPS_USB_EHCI },
{ "ich9-usb-ehci1", QEMU_CAPS_ICH9_USB_EHCI1 },
{ "vt82c686b-usb-uhci", QEMU_CAPS_VT82C686B_USB_UHCI },
{ "pci-ohci", QEMU_CAPS_PCI_OHCI },
{ "nec-usb-xhci", QEMU_CAPS_NEC_USB_XHCI },
{ "usb-redir", QEMU_CAPS_USB_REDIR },
{ "usb-hub", QEMU_CAPS_USB_HUB },
{ "ich9-ahci", QEMU_CAPS_ICH9_AHCI },
{ "virtio-blk-s390", QEMU_CAPS_VIRTIO_S390 },
{ "virtio-blk-ccw", QEMU_CAPS_VIRTIO_CCW },
{ "sclpconsole", QEMU_CAPS_SCLP_S390 },
{ "lsi53c895a", QEMU_CAPS_SCSI_LSI },
{ "virtio-scsi-pci", QEMU_CAPS_VIRTIO_SCSI },
{ "virtio-scsi-s390", QEMU_CAPS_VIRTIO_SCSI },
{ "virtio-scsi-ccw", QEMU_CAPS_VIRTIO_SCSI },
{ "virtio-scsi-device", QEMU_CAPS_VIRTIO_SCSI },
{ "megasas", QEMU_CAPS_SCSI_MEGASAS },
{ "spicevmc", QEMU_CAPS_DEVICE_SPICEVMC },
{ "qxl", QEMU_CAPS_DEVICE_QXL },
{ "sga", QEMU_CAPS_SGA },
{ "scsi-block", QEMU_CAPS_SCSI_BLOCK },
{ "scsi-cd", QEMU_CAPS_SCSI_CD },
{ "ide-cd", QEMU_CAPS_IDE_CD },
{ "VGA", QEMU_CAPS_DEVICE_VGA },
{ "cirrus-vga", QEMU_CAPS_DEVICE_CIRRUS_VGA },
{ "vmware-svga", QEMU_CAPS_DEVICE_VMWARE_SVGA },
{ "usb-serial", QEMU_CAPS_DEVICE_USB_SERIAL },
{ "usb-net", QEMU_CAPS_DEVICE_USB_NET },
{ "virtio-rng-pci", QEMU_CAPS_DEVICE_VIRTIO_RNG },
{ "virtio-rng-s390", QEMU_CAPS_DEVICE_VIRTIO_RNG },
{ "virtio-rng-ccw", QEMU_CAPS_DEVICE_VIRTIO_RNG },
{ "virtio-rng-device", QEMU_CAPS_DEVICE_VIRTIO_RNG },
{ "rng-random", QEMU_CAPS_OBJECT_RNG_RANDOM },
{ "rng-egd", QEMU_CAPS_OBJECT_RNG_EGD },
{ "spapr-nvram", QEMU_CAPS_DEVICE_NVRAM },
{ "pci-bridge", QEMU_CAPS_DEVICE_PCI_BRIDGE },
{ "vfio-pci", QEMU_CAPS_DEVICE_VFIO_PCI },
{ "scsi-generic", QEMU_CAPS_DEVICE_SCSI_GENERIC },
{ "i82801b11-bridge", QEMU_CAPS_DEVICE_DMI_TO_PCI_BRIDGE },
{ "usb-storage", QEMU_CAPS_DEVICE_USB_STORAGE },
{ "virtio-mmio", QEMU_CAPS_DEVICE_VIRTIO_MMIO },
{ "ich9-intel-hda", QEMU_CAPS_DEVICE_ICH9_INTEL_HDA },
{ "pvpanic", QEMU_CAPS_DEVICE_PANIC },
{ "usb-kbd", QEMU_CAPS_DEVICE_USB_KBD },
{ "memory-backend-ram", QEMU_CAPS_OBJECT_MEMORY_RAM },
{ "memory-backend-file", QEMU_CAPS_OBJECT_MEMORY_FILE },
{ "usb-audio", QEMU_CAPS_OBJECT_USB_AUDIO },
{ "iothread", QEMU_CAPS_OBJECT_IOTHREAD},
{ "ivshmem", QEMU_CAPS_DEVICE_IVSHMEM },
{ "pc-dimm", QEMU_CAPS_DEVICE_PC_DIMM },
{ "pci-serial", QEMU_CAPS_DEVICE_PCI_SERIAL },
{ "gpex-pcihost", QEMU_CAPS_OBJECT_GPEX},
{ "ioh3420", QEMU_CAPS_DEVICE_IOH3420 },
{ "x3130-upstream", QEMU_CAPS_DEVICE_X3130_UPSTREAM },
{ "xio3130-downstream", QEMU_CAPS_DEVICE_XIO3130_DOWNSTREAM },
{ "rtl8139", QEMU_CAPS_DEVICE_RTL8139 },
{ "e1000", QEMU_CAPS_DEVICE_E1000 },
{ "virtio-net-pci", QEMU_CAPS_DEVICE_VIRTIO_NET },
{ "virtio-net-ccw", QEMU_CAPS_DEVICE_VIRTIO_NET },
{ "virtio-net-s390", QEMU_CAPS_DEVICE_VIRTIO_NET },
{ "virtio-net-device", QEMU_CAPS_DEVICE_VIRTIO_NET },
{ "virtio-gpu-pci", QEMU_CAPS_DEVICE_VIRTIO_GPU },
{ "virtio-gpu-device", QEMU_CAPS_DEVICE_VIRTIO_GPU },
{ "virtio-vga", QEMU_CAPS_DEVICE_VIRTIO_VGA },
{ "virtio-keyboard-device", QEMU_CAPS_VIRTIO_KEYBOARD },
{ "virtio-keyboard-pci", QEMU_CAPS_VIRTIO_KEYBOARD },
{ "virtio-mouse-device", QEMU_CAPS_VIRTIO_MOUSE },
{ "virtio-mouse-pci", QEMU_CAPS_VIRTIO_MOUSE },
{ "virtio-tablet-device", QEMU_CAPS_VIRTIO_TABLET },
{ "virtio-tablet-pci", QEMU_CAPS_VIRTIO_TABLET },
{ "virtio-input-host-device", QEMU_CAPS_VIRTIO_INPUT_HOST },
{ "virtio-input-host-pci", QEMU_CAPS_VIRTIO_INPUT_HOST },
{ "mptsas1068", QEMU_CAPS_SCSI_MPTSAS1068 },
{ "secret", QEMU_CAPS_OBJECT_SECRET },
{ "pxb", QEMU_CAPS_DEVICE_PXB },
{ "pxb-pcie", QEMU_CAPS_DEVICE_PXB_PCIE },
{ "tls-creds-x509", QEMU_CAPS_OBJECT_TLS_CREDS_X509 },
{ "intel-iommu", QEMU_CAPS_DEVICE_INTEL_IOMMU },
{ "ivshmem-plain", QEMU_CAPS_DEVICE_IVSHMEM_PLAIN },
{ "ivshmem-doorbell", QEMU_CAPS_DEVICE_IVSHMEM_DOORBELL },
{ "vhost-scsi", QEMU_CAPS_DEVICE_VHOST_SCSI },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioBalloon[] = {
{ "deflate-on-oom", QEMU_CAPS_VIRTIO_BALLOON_AUTODEFLATE },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioBlk[] = {
{ "multifunction", QEMU_CAPS_PCI_MULTIFUNCTION },
{ "bootindex", QEMU_CAPS_BOOTINDEX },
{ "ioeventfd", QEMU_CAPS_VIRTIO_IOEVENTFD },
{ "event_idx", QEMU_CAPS_VIRTIO_BLK_EVENT_IDX },
{ "scsi", QEMU_CAPS_VIRTIO_BLK_SCSI },
{ "logical_block_size", QEMU_CAPS_BLOCKIO },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioNet[] = {
{ "tx", QEMU_CAPS_VIRTIO_TX_ALG },
{ "event_idx", QEMU_CAPS_VIRTIO_NET_EVENT_IDX },
{ "rx_queue_size", QEMU_CAPS_VIRTIO_NET_RX_QUEUE_SIZE },
{ "host_mtu", QEMU_CAPS_VIRTIO_NET_HOST_MTU },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioSCSI[] = {
{ "iothread", QEMU_CAPS_VIRTIO_SCSI_IOTHREAD },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsPCIAssign[] = {
{ "configfd", QEMU_CAPS_PCI_CONFIGFD },
{ "bootindex", QEMU_CAPS_PCI_BOOTINDEX },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVfioPCI[] = {
{ "bootindex", QEMU_CAPS_VFIO_PCI_BOOTINDEX },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsSCSIDisk[] = {
{ "channel", QEMU_CAPS_SCSI_DISK_CHANNEL },
{ "wwn", QEMU_CAPS_SCSI_DISK_WWN },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsIDEDrive[] = {
{ "wwn", QEMU_CAPS_IDE_DRIVE_WWN },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsPiix4PM[] = {
{ "disable_s3", QEMU_CAPS_PIIX_DISABLE_S3 },
{ "disable_s4", QEMU_CAPS_PIIX_DISABLE_S4 },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsUSBRedir[] = {
{ "filter", QEMU_CAPS_USB_REDIR_FILTER },
{ "bootindex", QEMU_CAPS_USB_REDIR_BOOTINDEX },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsUSBHost[] = {
{ "bootindex", QEMU_CAPS_USB_HOST_BOOTINDEX },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsSCSIGeneric[] = {
{ "bootindex", QEMU_CAPS_DEVICE_SCSI_GENERIC_BOOTINDEX },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsI440FXPCIHost[] = {
{ "pci-hole64-size", QEMU_CAPS_I440FX_PCI_HOLE64_SIZE },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsQ35PCIHost[] = {
{ "pci-hole64-size", QEMU_CAPS_Q35_PCI_HOLE64_SIZE },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsUSBStorage[] = {
{ "removable", QEMU_CAPS_USB_STORAGE_REMOVABLE },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsKVMPit[] = {
{ "lost_tick_policy", QEMU_CAPS_KVM_PIT_TICK_POLICY },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVGA[] = {
{ "vgamem_mb", QEMU_CAPS_VGA_VGAMEM },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVmwareSvga[] = {
{ "vgamem_mb", QEMU_CAPS_VMWARE_SVGA_VGAMEM },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsQxl[] = {
{ "vgamem_mb", QEMU_CAPS_QXL_VGAMEM },
{ "vram64_size_mb", QEMU_CAPS_QXL_VRAM64 },
{ "max_outputs", QEMU_CAPS_QXL_MAX_OUTPUTS },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioGpu[] = {
{ "virgl", QEMU_CAPS_VIRTIO_GPU_VIRGL },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsICH9[] = {
{ "disable_s3", QEMU_CAPS_ICH9_DISABLE_S3 },
{ "disable_s4", QEMU_CAPS_ICH9_DISABLE_S4 },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsUSBNECXHCI[] = {
{ "p3", QEMU_CAPS_NEC_USB_XHCI_PORTS },
};
/* see documentation for virQEMUCapsQMPSchemaGetByPath for the query format */
static struct virQEMUCapsStringFlags virQEMUCapsQMPSchemaQueries[] = {
{ "blockdev-add/arg-type/options/+gluster/debug-level", QEMU_CAPS_GLUSTER_DEBUG_LEVEL},
{ "blockdev-add/arg-type/+gluster/debug", QEMU_CAPS_GLUSTER_DEBUG_LEVEL},
};
struct virQEMUCapsObjectTypeProps {
const char *type;
struct virQEMUCapsStringFlags *props;
size_t nprops;
};
static struct virQEMUCapsObjectTypeProps virQEMUCapsObjectProps[] = {
{ "virtio-blk-pci", virQEMUCapsObjectPropsVirtioBlk,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVirtioBlk) },
{ "virtio-net-pci", virQEMUCapsObjectPropsVirtioNet,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVirtioNet) },
{ "virtio-scsi-pci", virQEMUCapsObjectPropsVirtioSCSI,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVirtioSCSI) },
{ "virtio-blk-ccw", virQEMUCapsObjectPropsVirtioBlk,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVirtioBlk) },
{ "virtio-net-ccw", virQEMUCapsObjectPropsVirtioNet,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVirtioNet) },
{ "virtio-scsi-ccw", virQEMUCapsObjectPropsVirtioSCSI,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVirtioSCSI) },
{ "virtio-blk-s390", virQEMUCapsObjectPropsVirtioBlk,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVirtioBlk) },
{ "virtio-net-s390", virQEMUCapsObjectPropsVirtioNet,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVirtioNet) },
{ "pci-assign", virQEMUCapsObjectPropsPCIAssign,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsPCIAssign) },
{ "kvm-pci-assign", virQEMUCapsObjectPropsPCIAssign,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsPCIAssign) },
{ "vfio-pci", virQEMUCapsObjectPropsVfioPCI,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVfioPCI) },
{ "scsi-disk", virQEMUCapsObjectPropsSCSIDisk,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsSCSIDisk) },
{ "ide-drive", virQEMUCapsObjectPropsIDEDrive,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsIDEDrive) },
{ "PIIX4_PM", virQEMUCapsObjectPropsPiix4PM,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsPiix4PM) },
{ "usb-redir", virQEMUCapsObjectPropsUSBRedir,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsUSBRedir) },
{ "usb-host", virQEMUCapsObjectPropsUSBHost,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsUSBHost) },
{ "scsi-generic", virQEMUCapsObjectPropsSCSIGeneric,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsSCSIGeneric) },
{ "i440FX-pcihost", virQEMUCapsObjectPropsI440FXPCIHost,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsI440FXPCIHost) },
{ "q35-pcihost", virQEMUCapsObjectPropsQ35PCIHost,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsQ35PCIHost) },
{ "usb-storage", virQEMUCapsObjectPropsUSBStorage,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsUSBStorage) },
{ "kvm-pit", virQEMUCapsObjectPropsKVMPit,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsKVMPit) },
{ "VGA", virQEMUCapsObjectPropsVGA,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVGA) },
{ "vmware-svga", virQEMUCapsObjectPropsVmwareSvga,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVmwareSvga) },
{ "qxl", virQEMUCapsObjectPropsQxl,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsQxl) },
{ "virtio-gpu-pci", virQEMUCapsObjectPropsVirtioGpu,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVirtioGpu) },
{ "virtio-gpu-device", virQEMUCapsObjectPropsVirtioGpu,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVirtioGpu) },
{ "ICH9-LPC", virQEMUCapsObjectPropsICH9,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsICH9) },
{ "virtio-balloon-pci", virQEMUCapsObjectPropsVirtioBalloon,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVirtioBalloon) },
{ "virtio-balloon-ccw", virQEMUCapsObjectPropsVirtioBalloon,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVirtioBalloon) },
{ "virtio-balloon-device", virQEMUCapsObjectPropsVirtioBalloon,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsVirtioBalloon) },
{ "nec-usb-xhci", virQEMUCapsObjectPropsUSBNECXHCI,
ARRAY_CARDINALITY(virQEMUCapsObjectPropsUSBNECXHCI) },
};
struct virQEMUCapsPropTypeObjects {
const char *prop;
int flag;
const char **objects;
};
static const char *virQEMUCapsVirtioPCIDisableLegacyObjects[] = {
"virtio-balloon-pci",
"virtio-blk-pci",
"virtio-scsi-pci",
"virtio-serial-pci",
"virtio-9p-pci",
"virtio-net-pci",
"virtio-rng-pci",
"virtio-gpu-pci",
"virtio-input-host-pci",
"virtio-keyboard-pci",
"virtio-mouse-pci",
"virtio-tablet-pci",
NULL
};
static struct virQEMUCapsPropTypeObjects virQEMUCapsPropObjects[] = {
{ "disable-legacy",
QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY,
virQEMUCapsVirtioPCIDisableLegacyObjects }
};
static void
virQEMUCapsProcessStringFlags(virQEMUCapsPtr qemuCaps,
size_t nflags,
struct virQEMUCapsStringFlags *flags,
size_t nvalues,
char *const*values)
{
size_t i, j;
for (i = 0; i < nflags; i++) {
for (j = 0; j < nvalues; j++) {
if (STREQ(values[j], flags[i].value)) {
virQEMUCapsSet(qemuCaps, flags[i].flag);
break;
}
}
}
}
static void
virQEMUCapsProcessProps(virQEMUCapsPtr qemuCaps,
size_t nprops,
struct virQEMUCapsPropTypeObjects *props,
const char *object,
size_t nvalues,
char *const*values)
{
size_t i, j;
for (i = 0; i < nprops; i++) {
if (virQEMUCapsGet(qemuCaps, props[i].flag))
continue;
for (j = 0; j < nvalues; j++) {
if (STREQ(values[j], props[i].prop)) {
if (virStringListHasString(props[i].objects, object))
virQEMUCapsSet(qemuCaps, props[i].flag);
break;
}
}
}
}
static void
virQEMUCapsFreeStringList(size_t len,
char **values)
{
size_t i;
if (!values)
return;
for (i = 0; i < len; i++)
VIR_FREE(values[i]);
VIR_FREE(values);
}
#define OBJECT_TYPE_PREFIX "name \""
static int
virQEMUCapsParseDeviceStrObjectTypes(const char *str,
char ***types)
{
const char *tmp = str;
int ret = -1;
size_t ntypelist = 0;
char **typelist = NULL;
*types = NULL;
while ((tmp = strstr(tmp, OBJECT_TYPE_PREFIX))) {
char *end;
tmp += strlen(OBJECT_TYPE_PREFIX);
end = strstr(tmp, "\"");
if (!end) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Malformed QEMU device list string, missing quote"));
goto cleanup;
}
if (VIR_EXPAND_N(typelist, ntypelist, 1) < 0)
goto cleanup;
if (VIR_STRNDUP(typelist[ntypelist - 1], tmp, end-tmp) < 0)
goto cleanup;
}
*types = typelist;
ret = ntypelist;
cleanup:
if (ret < 0)
virQEMUCapsFreeStringList(ntypelist, typelist);
return ret;
}
static int
virQEMUCapsParseDeviceStrObjectProps(const char *str,
const char *type,
char ***props)
{
const char *tmp = str;
int ret = -1;
size_t nproplist = 0;
char **proplist = NULL;
VIR_DEBUG("Extract type %s", type);
*props = NULL;
while ((tmp = strchr(tmp, '\n'))) {
char *end;
tmp += 1;
if (*tmp == '\0')
break;
if (STRPREFIX(tmp, OBJECT_TYPE_PREFIX))
continue;
if (!STRPREFIX(tmp, type))
continue;
tmp += strlen(type);
if (*tmp != '.')
continue;
tmp++;
end = strstr(tmp, "=");
if (!end) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Malformed QEMU device list string, missing '='"));
goto cleanup;
}
if (VIR_EXPAND_N(proplist, nproplist, 1) < 0)
goto cleanup;
if (VIR_STRNDUP(proplist[nproplist - 1], tmp, end-tmp) < 0)
goto cleanup;
}
*props = proplist;
ret = nproplist;
cleanup:
if (ret < 0)
virQEMUCapsFreeStringList(nproplist, proplist);
return ret;
}
int
virQEMUCapsParseDeviceStr(virQEMUCapsPtr qemuCaps, const char *str)
{
int nvalues;
char **values;
size_t i;
if ((nvalues = virQEMUCapsParseDeviceStrObjectTypes(str, &values)) < 0)
return -1;
virQEMUCapsProcessStringFlags(qemuCaps,
ARRAY_CARDINALITY(virQEMUCapsObjectTypes),
virQEMUCapsObjectTypes,
nvalues, values);
virQEMUCapsFreeStringList(nvalues, values);
for (i = 0; i < ARRAY_CARDINALITY(virQEMUCapsObjectProps); i++) {
const char *type = virQEMUCapsObjectProps[i].type;
if ((nvalues = virQEMUCapsParseDeviceStrObjectProps(str,
type,
&values)) < 0)
return -1;
virQEMUCapsProcessStringFlags(qemuCaps,
virQEMUCapsObjectProps[i].nprops,
virQEMUCapsObjectProps[i].props,
nvalues, values);
virQEMUCapsFreeStringList(nvalues, values);
}
/* Prefer -chardev spicevmc (detected earlier) over -device spicevmc */
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_CHARDEV_SPICEVMC))
virQEMUCapsClear(qemuCaps, QEMU_CAPS_DEVICE_SPICEVMC);
return 0;
}
static int
virQEMUCapsExtractDeviceStr(const char *qemu,
virQEMUCapsPtr qemuCaps,
uid_t runUid, gid_t runGid)
{
char *output = NULL;
virCommandPtr cmd;
int ret = -1;
/* Cram together all device-related queries into one invocation;
* the output format makes it possible to distinguish what we
* need. With qemu 0.13.0 and later, unrecognized '-device
* bogus,?' cause an error in isolation, but are silently ignored
* in combination with '-device ?'. Upstream qemu 0.12.x doesn't
* understand '-device name,?', and always exits with status 1 for
* the simpler '-device ?', so this function is really only useful
* if -help includes "device driver,?". */
cmd = virQEMUCapsProbeCommand(qemu, qemuCaps, runUid, runGid);
virCommandAddArgList(cmd,
"-device", "?",
"-device", "pci-assign,?",
"-device", "virtio-blk-pci,?",
"-device", "virtio-net-pci,?",
"-device", "scsi-disk,?",
"-device", "PIIX4_PM,?",
"-device", "usb-redir,?",
"-device", "ide-drive,?",
"-device", "usb-host,?",
"-device", "scsi-generic,?",
"-device", "usb-storage,?",
"-device", "VGA,?",
"-device", "vmware-svga,?",
"-device", "qxl,?",
"-device", "qxl-vga,?",
NULL);
/* qemu -help goes to stdout, but qemu -device ? goes to stderr. */
virCommandSetErrorBuffer(cmd, &output);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
ret = virQEMUCapsParseDeviceStr(qemuCaps, output);
cleanup:
VIR_FREE(output);
virCommandFree(cmd);
return ret;
}
int virQEMUCapsGetDefaultVersion(virCapsPtr caps,
virQEMUCapsCachePtr capsCache,
unsigned int *version)
{
virQEMUCapsPtr qemucaps;
virArch hostarch;
virCapsDomainDataPtr capsdata;
if (*version > 0)
return 0;
hostarch = virArchFromHost();
if (!(capsdata = virCapabilitiesDomainDataLookup(caps,
VIR_DOMAIN_OSTYPE_HVM, hostarch, VIR_DOMAIN_VIRT_QEMU,
NULL, NULL))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Cannot find suitable emulator for %s"),
virArchToString(hostarch));
return -1;
}
qemucaps = virQEMUCapsCacheLookup(caps, capsCache, capsdata->emulator);
VIR_FREE(capsdata);
if (!qemucaps)
return -1;
*version = virQEMUCapsGetVersion(qemucaps);
virObjectUnref(qemucaps);
return 0;
}
virQEMUCapsPtr
virQEMUCapsNew(void)
{
virQEMUCapsPtr qemuCaps;
if (virQEMUCapsInitialize() < 0)
return NULL;
if (!(qemuCaps = virObjectNew(virQEMUCapsClass)))
return NULL;
if (!(qemuCaps->flags = virBitmapNew(QEMU_CAPS_LAST)))
goto error;
return qemuCaps;
error:
virObjectUnref(qemuCaps);
return NULL;
}
virQEMUCapsPtr virQEMUCapsNewCopy(virQEMUCapsPtr qemuCaps)
{
virQEMUCapsPtr ret = virQEMUCapsNew();
size_t i;
if (!ret)
return NULL;
ret->usedQMP = qemuCaps->usedQMP;
if (VIR_STRDUP(ret->binary, qemuCaps->binary) < 0)
goto error;
ret->ctime = qemuCaps->ctime;
virBitmapCopy(ret->flags, qemuCaps->flags);
ret->version = qemuCaps->version;
ret->kvmVersion = qemuCaps->kvmVersion;
if (VIR_STRDUP(ret->package, qemuCaps->package) < 0)
goto error;
ret->arch = qemuCaps->arch;
if (qemuCaps->kvmCPUModels) {
ret->kvmCPUModels = virDomainCapsCPUModelsCopy(qemuCaps->kvmCPUModels);
if (!ret->kvmCPUModels)
goto error;
}
if (qemuCaps->tcgCPUModels) {
ret->tcgCPUModels = virDomainCapsCPUModelsCopy(qemuCaps->tcgCPUModels);
if (!ret->tcgCPUModels)
goto error;
}
if (qemuCaps->hostCPUModel &&
!(ret->hostCPUModel = virCPUDefCopy(qemuCaps->hostCPUModel)))
goto error;
if (qemuCaps->hostCPUModelInfo &&
!(ret->hostCPUModelInfo = qemuMonitorCPUModelInfoCopy(qemuCaps->hostCPUModelInfo)))
goto error;
if (VIR_ALLOC_N(ret->machineTypes, qemuCaps->nmachineTypes) < 0)
goto error;
ret->nmachineTypes = qemuCaps->nmachineTypes;
for (i = 0; i < qemuCaps->nmachineTypes; i++) {
if (VIR_STRDUP(ret->machineTypes[i].name, qemuCaps->machineTypes[i].name) < 0 ||
VIR_STRDUP(ret->machineTypes[i].alias, qemuCaps->machineTypes[i].alias) < 0)
goto error;
ret->machineTypes[i].maxCpus = qemuCaps->machineTypes[i].maxCpus;
ret->machineTypes[i].hotplugCpus = qemuCaps->machineTypes[i].hotplugCpus;
}
if (VIR_ALLOC_N(ret->gicCapabilities, qemuCaps->ngicCapabilities) < 0)
goto error;
ret->ngicCapabilities = qemuCaps->ngicCapabilities;
for (i = 0; i < qemuCaps->ngicCapabilities; i++)
ret->gicCapabilities[i] = qemuCaps->gicCapabilities[i];
return ret;
error:
virObjectUnref(ret);
return NULL;
}
void virQEMUCapsDispose(void *obj)
{
virQEMUCapsPtr qemuCaps = obj;
size_t i;
for (i = 0; i < qemuCaps->nmachineTypes; i++) {
VIR_FREE(qemuCaps->machineTypes[i].name);
VIR_FREE(qemuCaps->machineTypes[i].alias);
}
VIR_FREE(qemuCaps->machineTypes);
virObjectUnref(qemuCaps->kvmCPUModels);
virObjectUnref(qemuCaps->tcgCPUModels);
virBitmapFree(qemuCaps->flags);
VIR_FREE(qemuCaps->package);
VIR_FREE(qemuCaps->binary);
VIR_FREE(qemuCaps->gicCapabilities);
qemuMonitorCPUModelInfoFree(qemuCaps->hostCPUModelInfo);
virCPUDefFree(qemuCaps->hostCPUModel);
}
void
virQEMUCapsSet(virQEMUCapsPtr qemuCaps,
virQEMUCapsFlags flag)
{
ignore_value(virBitmapSetBit(qemuCaps->flags, flag));
}
void
virQEMUCapsSetList(virQEMUCapsPtr qemuCaps, ...)
{
va_list list;
int flag;
va_start(list, qemuCaps);
while ((flag = va_arg(list, int)) < QEMU_CAPS_LAST)
ignore_value(virBitmapSetBit(qemuCaps->flags, flag));
va_end(list);
}
void
virQEMUCapsClear(virQEMUCapsPtr qemuCaps,
virQEMUCapsFlags flag)
{
ignore_value(virBitmapClearBit(qemuCaps->flags, flag));
}
char *virQEMUCapsFlagsString(virQEMUCapsPtr qemuCaps)
{
return virBitmapString(qemuCaps->flags);
}
bool
virQEMUCapsGet(virQEMUCapsPtr qemuCaps,
virQEMUCapsFlags flag)
{
return qemuCaps && virBitmapIsBitSet(qemuCaps->flags, flag);
}
bool virQEMUCapsHasPCIMultiBus(virQEMUCapsPtr qemuCaps,
virDomainDefPtr def)
{
bool hasMultiBus = virQEMUCapsGet(qemuCaps, QEMU_CAPS_PCI_MULTIBUS);
if (hasMultiBus)
return true;
if (def->os.arch == VIR_ARCH_PPC ||
ARCH_IS_PPC64(def->os.arch)) {
/*
* Usage of pci.0 naming:
*
* ref405ep: no pci
* taihu: no pci
* bamboo: 1.1.0
* mac99: 2.0.0
* g3beige: 2.0.0
* prep: 1.4.0
* pseries: 2.0.0
* mpc8544ds: forever
* virtex-m507: no pci
* ppce500: 1.6.0
*/
if (qemuCaps->version >= 2000000)
return true;
if (qemuCaps->version >= 1006000 &&
STREQ(def->os.machine, "ppce500"))
return true;
if (qemuCaps->version >= 1004000 &&
STREQ(def->os.machine, "prep"))
return true;
if (qemuCaps->version >= 1001000 &&
STREQ(def->os.machine, "bamboo"))
return true;
if (STREQ(def->os.machine, "mpc8544ds"))
return true;
return false;
}
/* If 'virt' supports PCI, it supports multibus.
* No extra conditions here for simplicity.
*/
if (qemuDomainMachineIsVirt(def))
return true;
return false;
}
const char *virQEMUCapsGetBinary(virQEMUCapsPtr qemuCaps)
{
return qemuCaps->binary;
}
void
virQEMUCapsSetArch(virQEMUCapsPtr qemuCaps,
virArch arch)
{
qemuCaps->arch = arch;
}
virArch virQEMUCapsGetArch(virQEMUCapsPtr qemuCaps)
{
return qemuCaps->arch;
}
unsigned int virQEMUCapsGetVersion(virQEMUCapsPtr qemuCaps)
{
return qemuCaps->version;
}
unsigned int virQEMUCapsGetKVMVersion(virQEMUCapsPtr qemuCaps)
{
return qemuCaps->kvmVersion;
}
const char *virQEMUCapsGetPackage(virQEMUCapsPtr qemuCaps)
{
return qemuCaps->package;
}
int
virQEMUCapsAddCPUDefinitions(virQEMUCapsPtr qemuCaps,
virDomainVirtType type,
const char **name,
size_t count,
virDomainCapsCPUUsable usable)
{
size_t i;
virDomainCapsCPUModelsPtr cpus = NULL;
if (type == VIR_DOMAIN_VIRT_KVM && qemuCaps->kvmCPUModels)
cpus = qemuCaps->kvmCPUModels;
else if (type == VIR_DOMAIN_VIRT_QEMU && qemuCaps->tcgCPUModels)
cpus = qemuCaps->tcgCPUModels;
if (!cpus) {
if (!(cpus = virDomainCapsCPUModelsNew(count)))
return -1;
if (type == VIR_DOMAIN_VIRT_KVM)
qemuCaps->kvmCPUModels = cpus;
else
qemuCaps->tcgCPUModels = cpus;
}
for (i = 0; i < count; i++) {
if (virDomainCapsCPUModelsAdd(cpus, name[i], -1, usable) < 0)
return -1;
}
return 0;
}
int
virQEMUCapsGetCPUDefinitions(virQEMUCapsPtr qemuCaps,
virDomainVirtType type,
char ***names,
size_t *count)
{
size_t i;
char **models = NULL;
virDomainCapsCPUModelsPtr cpus;
*count = 0;
if (names)
*names = NULL;
if (type == VIR_DOMAIN_VIRT_KVM)
cpus = qemuCaps->kvmCPUModels;
else
cpus = qemuCaps->tcgCPUModels;
if (!cpus)
return 0;
if (names && VIR_ALLOC_N(models, cpus->nmodels) < 0)
return -1;
for (i = 0; i < cpus->nmodels; i++) {
virDomainCapsCPUModelPtr cpu = cpus->models + i;
if (models && VIR_STRDUP(models[i], cpu->name) < 0)
goto error;
}
if (names)
*names = models;
*count = cpus->nmodels;
return 0;
error:
virStringListFreeCount(models, i);
return -1;
}
virCPUDefPtr
virQEMUCapsGetHostModel(virQEMUCapsPtr qemuCaps)
{
return qemuCaps->hostCPUModel;
}
bool
virQEMUCapsIsCPUModeSupported(virQEMUCapsPtr qemuCaps,
virCapsPtr caps,
virDomainVirtType type,
virCPUMode mode)
{
virDomainCapsCPUModelsPtr cpus;
switch (mode) {
case VIR_CPU_MODE_HOST_PASSTHROUGH:
return type == VIR_DOMAIN_VIRT_KVM &&
virQEMUCapsGuestIsNative(caps->host.arch, qemuCaps->arch);
case VIR_CPU_MODE_HOST_MODEL:
return !!qemuCaps->hostCPUModel;
case VIR_CPU_MODE_CUSTOM:
if (type == VIR_DOMAIN_VIRT_KVM)
cpus = qemuCaps->kvmCPUModels;
else
cpus = qemuCaps->tcgCPUModels;
return cpus && cpus->nmodels > 0;
case VIR_CPU_MODE_LAST:
break;
}
return false;
}
int virQEMUCapsGetMachineTypesCaps(virQEMUCapsPtr qemuCaps,
size_t *nmachines,
virCapsGuestMachinePtr **machines)
{
size_t i;
*machines = NULL;
*nmachines = qemuCaps->nmachineTypes;
if (*nmachines &&
VIR_ALLOC_N(*machines, qemuCaps->nmachineTypes) < 0)
goto error;
for (i = 0; i < qemuCaps->nmachineTypes; i++) {
virCapsGuestMachinePtr mach;
if (VIR_ALLOC(mach) < 0)
goto error;
(*machines)[i] = mach;
if (qemuCaps->machineTypes[i].alias) {
if (VIR_STRDUP(mach->name, qemuCaps->machineTypes[i].alias) < 0 ||
VIR_STRDUP(mach->canonical, qemuCaps->machineTypes[i].name) < 0)
goto error;
} else {
if (VIR_STRDUP(mach->name, qemuCaps->machineTypes[i].name) < 0)
goto error;
}
mach->maxCpus = qemuCaps->machineTypes[i].maxCpus;
}
/* Make sure all canonical machine types also have their own entry so that
* /capabilities/guest/arch[@name='...']/machine/text() XPath selects all
* supported machine types.
*/
i = 0;
while (i < *nmachines) {
size_t j;
bool found = false;
virCapsGuestMachinePtr machine = (*machines)[i];
if (!machine->canonical) {
i++;
continue;
}
for (j = 0; j < *nmachines; j++) {
if (STREQ(machine->canonical, (*machines)[j]->name)) {
found = true;
break;
}
}
if (!found) {
virCapsGuestMachinePtr mach;
if (VIR_ALLOC(mach) < 0)
goto error;
if (VIR_INSERT_ELEMENT_COPY(*machines, i, *nmachines, mach) < 0) {
VIR_FREE(mach);
goto error;
}
if (VIR_STRDUP(mach->name, machine->canonical) < 0)
goto error;
mach->maxCpus = machine->maxCpus;
i++;
}
i++;
}
return 0;
error:
virCapabilitiesFreeMachines(*machines, *nmachines);
*nmachines = 0;
*machines = NULL;
return -1;
}
const char *virQEMUCapsGetCanonicalMachine(virQEMUCapsPtr qemuCaps,
const char *name)
{
size_t i;
if (!name)
return NULL;
for (i = 0; i < qemuCaps->nmachineTypes; i++) {
if (!qemuCaps->machineTypes[i].alias)
continue;
if (STREQ(qemuCaps->machineTypes[i].alias, name))
return qemuCaps->machineTypes[i].name;
}
return name;
}
int virQEMUCapsGetMachineMaxCpus(virQEMUCapsPtr qemuCaps,
const char *name)
{
size_t i;
if (!name)
return 0;
for (i = 0; i < qemuCaps->nmachineTypes; i++) {
if (!qemuCaps->machineTypes[i].maxCpus)
continue;
if (STREQ(qemuCaps->machineTypes[i].name, name))
return qemuCaps->machineTypes[i].maxCpus;
}
return 0;
}
bool virQEMUCapsGetMachineHotplugCpus(virQEMUCapsPtr qemuCaps,
const char *name)
{
size_t i;
for (i = 0; i < qemuCaps->nmachineTypes; i++) {
if (STREQ_NULLABLE(qemuCaps->machineTypes[i].name, name))
return qemuCaps->machineTypes[i].hotplugCpus;
}
return false;
}
/**
* virQEMUCapsSetGICCapabilities:
* @qemuCaps: QEMU capabilities
* @capabilities: GIC capabilities
* @ncapabilities: number of GIC capabilities
*
* Set the GIC capabilities for @qemuCaps.
*
* The ownership of @capabilities is taken away from the caller, ie. this
* function will not make a copy of @capabilities, so releasing that memory
* after it's been called is a bug.
*/
void
virQEMUCapsSetGICCapabilities(virQEMUCapsPtr qemuCaps,
virGICCapability *capabilities,
size_t ncapabilities)
{
VIR_FREE(qemuCaps->gicCapabilities);
qemuCaps->gicCapabilities = capabilities;
qemuCaps->ngicCapabilities = ncapabilities;
}
static int
virQEMUCapsProbeQMPCommands(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
char **commands = NULL;
int ncommands;
if ((ncommands = qemuMonitorGetCommands(mon, &commands)) < 0)
return -1;
virQEMUCapsProcessStringFlags(qemuCaps,
ARRAY_CARDINALITY(virQEMUCapsCommands),
virQEMUCapsCommands,
ncommands, commands);
virQEMUCapsFreeStringList(ncommands, commands);
/* QMP add-fd was introduced in 1.2, but did not support
* management control of set numbering, and did not have a
* counterpart -add-fd command line option. We require the
* add-fd features from 1.3 or later. */
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_ADD_FD)) {
int fd = open("/dev/null", O_RDONLY);
if (fd < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unable to probe for add-fd"));
return -1;
}
if (qemuMonitorAddFd(mon, 0, fd, "/dev/null") < 0)
virQEMUCapsClear(qemuCaps, QEMU_CAPS_ADD_FD);
VIR_FORCE_CLOSE(fd);
}
/* Probe for active commit of qemu 2.1 (for now, we are choosing
* to ignore the fact that qemu 2.0 can also do active commit) */
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_BLOCK_COMMIT) &&
qemuMonitorSupportsActiveCommit(mon))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_ACTIVE_COMMIT);
return 0;
}
static int
virQEMUCapsProbeQMPEvents(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
char **events = NULL;
int nevents;
if ((nevents = qemuMonitorGetEvents(mon, &events)) < 0)
return -1;
virQEMUCapsProcessStringFlags(qemuCaps,
ARRAY_CARDINALITY(virQEMUCapsEvents),
virQEMUCapsEvents,
nevents, events);
virQEMUCapsFreeStringList(nevents, events);
return 0;
}
static int
virQEMUCapsProbeQMPObjects(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
int nvalues;
char **values;
size_t i;
if ((nvalues = qemuMonitorGetObjectTypes(mon, &values)) < 0)
return -1;
virQEMUCapsProcessStringFlags(qemuCaps,
ARRAY_CARDINALITY(virQEMUCapsObjectTypes),
virQEMUCapsObjectTypes,
nvalues, values);
virQEMUCapsFreeStringList(nvalues, values);
for (i = 0; i < ARRAY_CARDINALITY(virQEMUCapsObjectProps); i++) {
const char *type = virQEMUCapsObjectProps[i].type;
if ((nvalues = qemuMonitorGetObjectProps(mon,
type,
&values)) < 0)
return -1;
virQEMUCapsProcessStringFlags(qemuCaps,
virQEMUCapsObjectProps[i].nprops,
virQEMUCapsObjectProps[i].props,
nvalues, values);
virQEMUCapsProcessProps(qemuCaps,
ARRAY_CARDINALITY(virQEMUCapsPropObjects),
virQEMUCapsPropObjects, type,
nvalues, values);
virQEMUCapsFreeStringList(nvalues, values);
}
/* Prefer -chardev spicevmc (detected earlier) over -device spicevmc */
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_CHARDEV_SPICEVMC))
virQEMUCapsClear(qemuCaps, QEMU_CAPS_DEVICE_SPICEVMC);
return 0;
}
static int
virQEMUCapsProbeQMPMachineTypes(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
qemuMonitorMachineInfoPtr *machines = NULL;
int nmachines = 0;
int ret = -1;
size_t i;
size_t defIdx = 0;
if ((nmachines = qemuMonitorGetMachines(mon, &machines)) < 0)
return -1;
if (VIR_ALLOC_N(qemuCaps->machineTypes, nmachines) < 0)
goto cleanup;
for (i = 0; i < nmachines; i++) {
struct virQEMUCapsMachineType *mach;
if (STREQ(machines[i]->name, "none"))
continue;
mach = &(qemuCaps->machineTypes[qemuCaps->nmachineTypes++]);
if (VIR_STRDUP(mach->alias, machines[i]->alias) < 0 ||
VIR_STRDUP(mach->name, machines[i]->name) < 0)
goto cleanup;
mach->maxCpus = machines[i]->maxCpus;
mach->hotplugCpus = machines[i]->hotplugCpus;
if (machines[i]->isDefault)
defIdx = qemuCaps->nmachineTypes - 1;
}
if (defIdx)
virQEMUCapsSetDefaultMachine(qemuCaps, defIdx);
ret = 0;
cleanup:
for (i = 0; i < nmachines; i++)
qemuMonitorMachineInfoFree(machines[i]);
VIR_FREE(machines);
return ret;
}
static int
virQEMUCapsProbeQMPCPUDefinitions(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon,
bool tcg)
{
virDomainCapsCPUModelsPtr models;
qemuMonitorCPUDefInfoPtr *cpus;
int ncpus;
int ret = -1;
size_t i;
if ((ncpus = qemuMonitorGetCPUDefinitions(mon, &cpus)) < 0)
return -1;
if (!(models = virDomainCapsCPUModelsNew(ncpus)))
goto cleanup;
if (tcg || !virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM))
qemuCaps->tcgCPUModels = models;
else
qemuCaps->kvmCPUModels = models;
for (i = 0; i < ncpus; i++) {
virDomainCapsCPUUsable usable = VIR_DOMCAPS_CPU_USABLE_UNKNOWN;
if (cpus[i]->usable == VIR_TRISTATE_BOOL_YES)
usable = VIR_DOMCAPS_CPU_USABLE_YES;
else if (cpus[i]->usable == VIR_TRISTATE_BOOL_NO)
usable = VIR_DOMCAPS_CPU_USABLE_NO;
if (virDomainCapsCPUModelsAddSteal(models, &cpus[i]->name, usable) < 0)
goto cleanup;
}
ret = 0;
cleanup:
for (i = 0; i < ncpus; i++)
qemuMonitorCPUDefInfoFree(cpus[i]);
VIR_FREE(cpus);
return ret;
}
static int
virQEMUCapsProbeQMPHostCPU(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_QUERY_CPU_MODEL_EXPANSION) ||
!virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM))
return 0;
return qemuMonitorGetCPUModelExpansion(mon, "static", "host",
&qemuCaps->hostCPUModelInfo);
}
struct tpmTypeToCaps {
int type;
virQEMUCapsFlags caps;
};
static const struct tpmTypeToCaps virQEMUCapsTPMTypesToCaps[] = {
{
.type = VIR_DOMAIN_TPM_TYPE_PASSTHROUGH,
.caps = QEMU_CAPS_DEVICE_TPM_PASSTHROUGH,
},
};
const struct tpmTypeToCaps virQEMUCapsTPMModelsToCaps[] = {
{
.type = VIR_DOMAIN_TPM_MODEL_TIS,
.caps = QEMU_CAPS_DEVICE_TPM_TIS,
},
};
static int
virQEMUCapsProbeQMPTPM(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
int nentries;
size_t i;
char **entries = NULL;
if ((nentries = qemuMonitorGetTPMModels(mon, &entries)) < 0)
return -1;
if (nentries > 0) {
for (i = 0; i < ARRAY_CARDINALITY(virQEMUCapsTPMModelsToCaps); i++) {
const char *needle = virDomainTPMModelTypeToString(
virQEMUCapsTPMModelsToCaps[i].type);
if (virStringListHasString((const char **) entries, needle))
virQEMUCapsSet(qemuCaps,
virQEMUCapsTPMModelsToCaps[i].caps);
}
}
virStringListFree(entries);
if ((nentries = qemuMonitorGetTPMTypes(mon, &entries)) < 0)
return -1;
if (nentries > 0) {
for (i = 0; i < ARRAY_CARDINALITY(virQEMUCapsTPMTypesToCaps); i++) {
const char *needle = virDomainTPMBackendTypeToString(
virQEMUCapsTPMTypesToCaps[i].type);
if (virStringListHasString((const char **) entries, needle))
virQEMUCapsSet(qemuCaps, virQEMUCapsTPMTypesToCaps[i].caps);
}
}
virStringListFree(entries);
return 0;
}
static int
virQEMUCapsProbeQMPKVMState(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
bool enabled = false;
bool present = false;
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM))
return 0;
if (qemuMonitorGetKVMState(mon, &enabled, &present) < 0)
return -1;
/* The QEMU_CAPS_KVM flag was initially set according to the QEMU
* reporting the recognition of 'query-kvm' QMP command. That merely
* indicates existence of the command though, not whether KVM support
* is actually available, nor whether it is enabled by default.
*
* If it is not present we need to clear the flag, and if it is
* not enabled by default we need to change the flag.
*/
if (!present) {
virQEMUCapsClear(qemuCaps, QEMU_CAPS_KVM);
} else if (!enabled) {
virQEMUCapsClear(qemuCaps, QEMU_CAPS_KVM);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_ENABLE_KVM);
}
return 0;
}
struct virQEMUCapsCommandLineProps {
const char *option;
const char *param;
int flag;
};
static struct virQEMUCapsCommandLineProps virQEMUCapsCommandLine[] = {
{ "machine", "mem-merge", QEMU_CAPS_MEM_MERGE },
{ "machine", "vmport", QEMU_CAPS_MACHINE_VMPORT_OPT },
{ "drive", "discard", QEMU_CAPS_DRIVE_DISCARD },
{ "drive", "detect-zeroes", QEMU_CAPS_DRIVE_DETECT_ZEROES },
{ "realtime", "mlock", QEMU_CAPS_REALTIME_MLOCK },
{ "boot-opts", "strict", QEMU_CAPS_BOOT_STRICT },
{ "boot-opts", "reboot-timeout", QEMU_CAPS_REBOOT_TIMEOUT },
{ "boot-opts", "splash-time", QEMU_CAPS_SPLASH_TIMEOUT },
{ "spice", "disable-agent-file-xfer", QEMU_CAPS_SPICE_FILE_XFER_DISABLE },
{ "msg", "timestamp", QEMU_CAPS_MSG_TIMESTAMP },
{ "numa", NULL, QEMU_CAPS_NUMA },
{ "drive", "throttling.bps-total-max", QEMU_CAPS_DRIVE_IOTUNE_MAX},
{ "machine", "aes-key-wrap", QEMU_CAPS_AES_KEY_WRAP },
{ "machine", "dea-key-wrap", QEMU_CAPS_DEA_KEY_WRAP },
{ "chardev", "append", QEMU_CAPS_CHARDEV_FILE_APPEND },
{ "spice", "gl", QEMU_CAPS_SPICE_GL },
{ "chardev", "logfile", QEMU_CAPS_CHARDEV_LOGFILE },
{ "name", "debug-threads", QEMU_CAPS_NAME_DEBUG_THREADS },
{ "name", "guest", QEMU_CAPS_NAME_GUEST },
{ "spice", "unix", QEMU_CAPS_SPICE_UNIX },
{ "drive", "throttling.bps-total-max-length", QEMU_CAPS_DRIVE_IOTUNE_MAX_LENGTH },
{ "drive", "throttling.group", QEMU_CAPS_DRIVE_IOTUNE_GROUP },
};
static int
virQEMUCapsProbeQMPCommandLine(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
bool found = false;
int nvalues;
char **values;
size_t i, j;
for (i = 0; i < ARRAY_CARDINALITY(virQEMUCapsCommandLine); i++) {
if ((nvalues = qemuMonitorGetCommandLineOptionParameters(mon,
virQEMUCapsCommandLine[i].option,
&values,
&found)) < 0)
return -1;
if (found && !virQEMUCapsCommandLine[i].param)
virQEMUCapsSet(qemuCaps, virQEMUCapsCommandLine[i].flag);
for (j = 0; j < nvalues; j++) {
if (STREQ_NULLABLE(virQEMUCapsCommandLine[i].param, values[j])) {
virQEMUCapsSet(qemuCaps, virQEMUCapsCommandLine[i].flag);
break;
}
}
virStringListFree(values);
}
return 0;
}
static int
virQEMUCapsProbeQMPMigrationCapabilities(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
char **caps = NULL;
int ncaps;
if ((ncaps = qemuMonitorGetMigrationCapabilities(mon, &caps)) < 0)
return -1;
virQEMUCapsProcessStringFlags(qemuCaps,
ARRAY_CARDINALITY(virQEMUCapsMigration),
virQEMUCapsMigration,
ncaps, caps);
virQEMUCapsFreeStringList(ncaps, caps);
return 0;
}
/**
* virQEMUCapsProbeQMPGICCapabilities:
* @qemuCaps: QEMU binary capabilities
* @mon: QEMU monitor
*
* Use @mon to obtain information about the GIC capabilities for the
* corresponding QEMU binary, and store them in @qemuCaps.
*
* Returns: 0 on success, <0 on failure
*/
static int
virQEMUCapsProbeQMPGICCapabilities(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
virGICCapability *caps = NULL;
int ncaps;
if ((ncaps = qemuMonitorGetGICCapabilities(mon, &caps)) < 0)
return -1;
virQEMUCapsSetGICCapabilities(qemuCaps, caps, ncaps);
return 0;
}
static bool
virQEMUCapsCPUFilterFeatures(const char *name,
void *opaque ATTRIBUTE_UNUSED)
{
if (STREQ(name, "cmt") ||
STREQ(name, "mbm_total") ||
STREQ(name, "mbm_local"))
return false;
return true;
}
static void
virQEMUCapsCopyCPUModelFromQEMU(virQEMUCapsPtr qemuCaps)
{
virCPUDefPtr cpu = NULL;
qemuMonitorCPUModelInfoPtr modelInfo = NULL;
size_t i;
if (!(modelInfo = qemuCaps->hostCPUModelInfo)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("missing host CPU model info from QEMU capabilities"
" for binary %s"), qemuCaps->binary);
goto error;
}
if (VIR_ALLOC(cpu) < 0)
goto error;
if (VIR_STRDUP(cpu->model, modelInfo->name) < 0 ||
VIR_ALLOC_N(cpu->features, modelInfo->nprops) < 0)
goto error;
cpu->nfeatures_max = modelInfo->nprops;
cpu->nfeatures = 0;
cpu->sockets = cpu->cores = cpu->threads = 0;
cpu->type = VIR_CPU_TYPE_GUEST;
cpu->mode = VIR_CPU_MODE_CUSTOM;
cpu->match = VIR_CPU_MATCH_EXACT;
for (i = 0; i < modelInfo->nprops; i++) {
if (VIR_STRDUP(cpu->features[i].name, modelInfo->props[i].name) < 0)
goto error;
if (modelInfo->props[i].supported)
cpu->features[i].policy = VIR_CPU_FEATURE_REQUIRE;
else
cpu->features[i].policy = VIR_CPU_FEATURE_DISABLE;
cpu->nfeatures++;
}
qemuCaps->hostCPUModel = cpu;
return;
error:
virCPUDefFree(cpu);
qemuCaps->hostCPUModel = NULL;
virResetLastError();
}
static void
virQEMUCapsCopyCPUModelFromHost(virQEMUCapsPtr qemuCaps,
virCapsPtr caps)
{
virCPUDefPtr cpu = NULL;
if (caps->host.cpu && caps->host.cpu->model) {
if (VIR_ALLOC(cpu) < 0)
goto error;
cpu->sockets = cpu->cores = cpu->threads = 0;
cpu->type = VIR_CPU_TYPE_GUEST;
cpu->mode = VIR_CPU_MODE_CUSTOM;
cpu->match = VIR_CPU_MATCH_EXACT;
if (virCPUDefCopyModelFilter(cpu, caps->host.cpu, true,
virQEMUCapsCPUFilterFeatures, NULL) < 0)
goto error;
}
qemuCaps->hostCPUModel = cpu;
return;
error:
virCPUDefFree(cpu);
qemuCaps->hostCPUModel = NULL;
virResetLastError();
}
void
virQEMUCapsInitHostCPUModel(virQEMUCapsPtr qemuCaps,
virCapsPtr caps)
{
if (!caps || !virQEMUCapsGuestIsNative(caps->host.arch, qemuCaps->arch))
return;
switch (qemuCaps->arch) {
case VIR_ARCH_S390:
case VIR_ARCH_S390X:
virQEMUCapsCopyCPUModelFromQEMU(qemuCaps);
break;
default:
virQEMUCapsCopyCPUModelFromHost(qemuCaps, caps);
}
}
static int
virQEMUCapsLoadHostCPUModelInfo(virQEMUCapsPtr qemuCaps,
xmlXPathContextPtr ctxt)
{
char *str = NULL;
xmlNodePtr hostCPUNode;
xmlNodePtr *featureNodes = NULL;
xmlNodePtr oldnode = ctxt->node;
qemuMonitorCPUModelInfoPtr hostCPU = NULL;
int ret = -1;
size_t i;
int n;
if (!(hostCPUNode = virXPathNode("./hostCPU", ctxt))) {
ret = 0;
goto cleanup;
}
if (VIR_ALLOC(hostCPU) < 0)
goto cleanup;
if (!(hostCPU->name = virXMLPropString(hostCPUNode, "model"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing host CPU model name in QEMU "
"capabilities cache"));
goto cleanup;
}
ctxt->node = hostCPUNode;
if ((n = virXPathNodeSet("./feature", ctxt, &featureNodes)) > 0) {
if (VIR_ALLOC_N(hostCPU->props, n) < 0)
goto cleanup;
hostCPU->nprops = n;
for (i = 0; i < n; i++) {
hostCPU->props[i].name = virXMLPropString(featureNodes[i], "name");
if (!hostCPU->props[i].name) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing 'name' attribute for a host CPU"
" model feature in QEMU capabilities cache"));
goto cleanup;
}
if (!(str = virXMLPropString(featureNodes[i], "supported"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing 'supported' attribute for a host CPU"
" model feature in QEMU capabilities cache"));
goto cleanup;
}
if (STREQ(str, "yes")) {
hostCPU->props[i].supported = true;
} else if (STREQ(str, "no")) {
hostCPU->props[i].supported = false;
} else {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("invalid supported value: '%s'"), str);
goto cleanup;
}
VIR_FREE(str);
}
}
qemuCaps->hostCPUModelInfo = hostCPU;
hostCPU = NULL;
ret = 0;
cleanup:
ctxt->node = oldnode;
VIR_FREE(str);
VIR_FREE(featureNodes);
qemuMonitorCPUModelInfoFree(hostCPU);
return ret;
}
static int
virQEMUCapsLoadCPUModels(virQEMUCapsPtr qemuCaps,
xmlXPathContextPtr ctxt,
virDomainVirtType type)
{
virDomainCapsCPUModelsPtr cpus = NULL;
xmlNodePtr *nodes = NULL;
char *str = NULL;
size_t i;
int n;
int ret = -1;
if (type == VIR_DOMAIN_VIRT_KVM)
n = virXPathNodeSet("./cpu[@type='kvm']", ctxt, &nodes);
else
n = virXPathNodeSet("./cpu[@type='tcg']", ctxt, &nodes);
if (n < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("failed to parse qemu capabilities cpus"));
goto cleanup;
}
if (n == 0) {
ret = 0;
goto cleanup;
}
if (!(cpus = virDomainCapsCPUModelsNew(n)))
goto cleanup;
if (type == VIR_DOMAIN_VIRT_KVM)
qemuCaps->kvmCPUModels = cpus;
else
qemuCaps->tcgCPUModels = cpus;
for (i = 0; i < n; i++) {
int usable = VIR_DOMCAPS_CPU_USABLE_UNKNOWN;
if ((str = virXMLPropString(nodes[i], "usable")) &&
(usable = virDomainCapsCPUUsableTypeFromString(str)) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown value '%s' in attribute 'usable'"), str);
goto cleanup;
}
VIR_FREE(str);
if (!(str = virXMLPropString(nodes[i], "name"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing cpu name in QEMU capabilities cache"));
goto cleanup;
}
if (virDomainCapsCPUModelsAddSteal(cpus, &str, usable) < 0)
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(nodes);
VIR_FREE(str);
return ret;
}
/*
* Parsing a doc that looks like
*
* <qemuCaps>
* <qemuctime>234235253</qemuctime>
* <selfctime>234235253</selfctime>
* <selfvers>1002016</selfvers>
* <usedQMP/>
* <flag name='foo'/>
* <flag name='bar'/>
* ...
* <cpu name="pentium3"/>
* ...
* <machine name="pc-1.0" alias="pc" hotplugCpus='yes' maxCpus="4"/>
* ...
* </qemuCaps>
*/
int
virQEMUCapsLoadCache(virCapsPtr caps,
virQEMUCapsPtr qemuCaps,
const char *filename,
time_t *selfctime,
unsigned long *selfvers)
{
xmlDocPtr doc = NULL;
int ret = -1;
size_t i;
int n;
xmlNodePtr *nodes = NULL;
xmlXPathContextPtr ctxt = NULL;
char *str = NULL;
long long int l;
unsigned long lu;
if (!(doc = virXMLParseFile(filename)))
goto cleanup;
if (!(ctxt = xmlXPathNewContext(doc))) {
virReportOOMError();
goto cleanup;
}
ctxt->node = xmlDocGetRootElement(doc);
if (STRNEQ((const char *)ctxt->node->name, "qemuCaps")) {
virReportError(VIR_ERR_XML_ERROR,
_("unexpected root element <%s>, "
"expecting <qemuCaps>"),
ctxt->node->name);
goto cleanup;
}
if (virXPathLongLong("string(./qemuctime)", ctxt, &l) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing qemuctime in QEMU capabilities XML"));
goto cleanup;
}
qemuCaps->ctime = (time_t)l;
if (virXPathLongLong("string(./selfctime)", ctxt, &l) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing selfctime in QEMU capabilities XML"));
goto cleanup;
}
*selfctime = (time_t)l;
*selfvers = 0;
if (virXPathULong("string(./selfvers)", ctxt, &lu) == 0)
*selfvers = lu;
qemuCaps->usedQMP = virXPathBoolean("count(./usedQMP) > 0",
ctxt) > 0;
if ((n = virXPathNodeSet("./flag", ctxt, &nodes)) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("failed to parse qemu capabilities flags"));
goto cleanup;
}
VIR_DEBUG("Got flags %d", n);
for (i = 0; i < n; i++) {
int flag;
if (!(str = virXMLPropString(nodes[i], "name"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing flag name in QEMU capabilities cache"));
goto cleanup;
}
flag = virQEMUCapsTypeFromString(str);
if (flag < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unknown qemu capabilities flag %s"), str);
goto cleanup;
}
VIR_FREE(str);
virQEMUCapsSet(qemuCaps, flag);
}
VIR_FREE(nodes);
if (virXPathUInt("string(./version)", ctxt, &qemuCaps->version) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing version in QEMU capabilities cache"));
goto cleanup;
}
if (virXPathUInt("string(./kvmVersion)", ctxt, &qemuCaps->kvmVersion) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing version in QEMU capabilities cache"));
goto cleanup;
}
if (virXPathBoolean("boolean(./package)", ctxt) > 0) {
qemuCaps->package = virXPathString("string(./package)", ctxt);
if (!qemuCaps->package &&
VIR_STRDUP(qemuCaps->package, "") < 0)
goto cleanup;
}
if (!(str = virXPathString("string(./arch)", ctxt))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing arch in QEMU capabilities cache"));
goto cleanup;
}
if (!(qemuCaps->arch = virArchFromString(str))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown arch %s in QEMU capabilities cache"), str);
goto cleanup;
}
VIR_FREE(str);
if (virQEMUCapsLoadHostCPUModelInfo(qemuCaps, ctxt) < 0)
goto cleanup;
if (virQEMUCapsLoadCPUModels(qemuCaps, ctxt, VIR_DOMAIN_VIRT_KVM) < 0 ||
virQEMUCapsLoadCPUModels(qemuCaps, ctxt, VIR_DOMAIN_VIRT_QEMU) < 0)
goto cleanup;
if ((n = virXPathNodeSet("./machine", ctxt, &nodes)) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("failed to parse qemu capabilities machines"));
goto cleanup;
}
if (n > 0) {
qemuCaps->nmachineTypes = n;
if (VIR_ALLOC_N(qemuCaps->machineTypes, qemuCaps->nmachineTypes) < 0)
goto cleanup;
for (i = 0; i < n; i++) {
if (!(qemuCaps->machineTypes[i].name = virXMLPropString(nodes[i], "name"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing machine name in QEMU capabilities cache"));
goto cleanup;
}
qemuCaps->machineTypes[i].alias = virXMLPropString(nodes[i], "alias");
str = virXMLPropString(nodes[i], "maxCpus");
if (str &&
virStrToLong_ui(str, NULL, 10, &(qemuCaps->machineTypes[i].maxCpus)) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("malformed machine cpu count in QEMU capabilities cache"));
goto cleanup;
}
VIR_FREE(str);
str = virXMLPropString(nodes[i], "hotplugCpus");
if (STREQ_NULLABLE(str, "yes"))
qemuCaps->machineTypes[i].hotplugCpus = true;
VIR_FREE(str);
}
}
VIR_FREE(nodes);
if ((n = virXPathNodeSet("./gic", ctxt, &nodes)) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("failed to parse qemu capabilities gic"));
goto cleanup;
}
if (n > 0) {
unsigned int uintValue;
bool boolValue;
qemuCaps->ngicCapabilities = n;
if (VIR_ALLOC_N(qemuCaps->gicCapabilities, n) < 0)
goto cleanup;
for (i = 0; i < n; i++) {
virGICCapabilityPtr cap = &qemuCaps->gicCapabilities[i];
if (!(str = virXMLPropString(nodes[i], "version"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing GIC version "
"in QEMU capabilities cache"));
goto cleanup;
}
if (virStrToLong_ui(str, NULL, 10, &uintValue) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("malformed GIC version "
"in QEMU capabilities cache"));
goto cleanup;
}
cap->version = uintValue;
VIR_FREE(str);
if (!(str = virXMLPropString(nodes[i], "kernel"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing in-kernel GIC information "
"in QEMU capabilities cache"));
goto cleanup;
}
if (!(boolValue = STREQ(str, "yes")) && STRNEQ(str, "no")) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("malformed in-kernel GIC information "
"in QEMU capabilities cache"));
goto cleanup;
}
if (boolValue)
cap->implementation |= VIR_GIC_IMPLEMENTATION_KERNEL;
VIR_FREE(str);
if (!(str = virXMLPropString(nodes[i], "emulated"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing emulated GIC information "
"in QEMU capabilities cache"));
goto cleanup;
}
if (!(boolValue = STREQ(str, "yes")) && STRNEQ(str, "no")) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("malformed emulated GIC information "
"in QEMU capabilities cache"));
goto cleanup;
}
if (boolValue)
cap->implementation |= VIR_GIC_IMPLEMENTATION_EMULATED;
VIR_FREE(str);
}
}
VIR_FREE(nodes);
virQEMUCapsInitHostCPUModel(qemuCaps, caps);
ret = 0;
cleanup:
VIR_FREE(str);
VIR_FREE(nodes);
xmlXPathFreeContext(ctxt);
xmlFreeDoc(doc);
return ret;
}
static void
virQEMUCapsFormatCPUModels(virQEMUCapsPtr qemuCaps,
virBufferPtr buf,
virDomainVirtType type)
{
virDomainCapsCPUModelsPtr cpus;
const char *typeStr;
size_t i;
if (type == VIR_DOMAIN_VIRT_KVM) {
typeStr = "kvm";
cpus = qemuCaps->kvmCPUModels;
} else {
typeStr = "tcg";
cpus = qemuCaps->tcgCPUModels;
}
if (!cpus)
return;
for (i = 0; i < cpus->nmodels; i++) {
virDomainCapsCPUModelPtr cpu = cpus->models + i;
virBufferAsprintf(buf, "<cpu type='%s' ", typeStr);
virBufferEscapeString(buf, "name='%s'", cpu->name);
if (cpu->usable) {
virBufferAsprintf(buf, " usable='%s'",
virDomainCapsCPUUsableTypeToString(cpu->usable));
}
virBufferAddLit(buf, "/>\n");
}
}
char *
virQEMUCapsFormatCache(virQEMUCapsPtr qemuCaps,
time_t selfCTime,
unsigned long selfVersion)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
char *ret = NULL;
size_t i;
virBufferAddLit(&buf, "<qemuCaps>\n");
virBufferAdjustIndent(&buf, 2);
virBufferAsprintf(&buf, "<qemuctime>%llu</qemuctime>\n",
(long long) qemuCaps->ctime);
virBufferAsprintf(&buf, "<selfctime>%llu</selfctime>\n",
(long long) selfCTime);
virBufferAsprintf(&buf, "<selfvers>%lu</selfvers>\n",
(unsigned long) selfVersion);
if (qemuCaps->usedQMP)
virBufferAddLit(&buf, "<usedQMP/>\n");
for (i = 0; i < QEMU_CAPS_LAST; i++) {
if (virQEMUCapsGet(qemuCaps, i)) {
virBufferAsprintf(&buf, "<flag name='%s'/>\n",
virQEMUCapsTypeToString(i));
}
}
virBufferAsprintf(&buf, "<version>%d</version>\n",
qemuCaps->version);
virBufferAsprintf(&buf, "<kvmVersion>%d</kvmVersion>\n",
qemuCaps->kvmVersion);
if (qemuCaps->package)
virBufferAsprintf(&buf, "<package>%s</package>\n",
qemuCaps->package);
virBufferAsprintf(&buf, "<arch>%s</arch>\n",
virArchToString(qemuCaps->arch));
if (qemuCaps->hostCPUModelInfo) {
virBufferAsprintf(&buf, "<hostCPU model='%s'>\n",
qemuCaps->hostCPUModelInfo->name);
virBufferAdjustIndent(&buf, 2);
for (i = 0; i < qemuCaps->hostCPUModelInfo->nprops; i++) {
virBufferAsprintf(&buf, "<feature name='%s' supported='%s'/>\n",
qemuCaps->hostCPUModelInfo->props[i].name,
qemuCaps->hostCPUModelInfo->props[i].supported ?
"yes" : "no");
}
virBufferAdjustIndent(&buf, -2);
virBufferAddLit(&buf, "</hostCPU>\n");
}
virQEMUCapsFormatCPUModels(qemuCaps, &buf, VIR_DOMAIN_VIRT_KVM);
virQEMUCapsFormatCPUModels(qemuCaps, &buf, VIR_DOMAIN_VIRT_QEMU);
for (i = 0; i < qemuCaps->nmachineTypes; i++) {
virBufferEscapeString(&buf, "<machine name='%s'",
qemuCaps->machineTypes[i].name);
if (qemuCaps->machineTypes[i].alias)
virBufferEscapeString(&buf, " alias='%s'",
qemuCaps->machineTypes[i].alias);
if (qemuCaps->machineTypes[i].hotplugCpus)
virBufferAddLit(&buf, " hotplugCpus='yes'");
virBufferAsprintf(&buf, " maxCpus='%u'/>\n",
qemuCaps->machineTypes[i].maxCpus);
}
for (i = 0; i < qemuCaps->ngicCapabilities; i++) {
virGICCapabilityPtr cap;
bool kernel;
bool emulated;
cap = &qemuCaps->gicCapabilities[i];
kernel = (cap->implementation & VIR_GIC_IMPLEMENTATION_KERNEL);
emulated = (cap->implementation & VIR_GIC_IMPLEMENTATION_EMULATED);
virBufferAsprintf(&buf,
"<gic version='%d' kernel='%s' emulated='%s'/>\n",
cap->version,
kernel ? "yes" : "no",
emulated ? "yes" : "no");
}
virBufferAdjustIndent(&buf, -2);
virBufferAddLit(&buf, "</qemuCaps>\n");
if (virBufferCheckError(&buf) == 0)
ret = virBufferContentAndReset(&buf);
return ret;
}
static int
virQEMUCapsSaveCache(virQEMUCapsPtr qemuCaps, const char *filename)
{
char *xml = NULL;
int ret = -1;
xml = virQEMUCapsFormatCache(qemuCaps,
virGetSelfLastChanged(),
LIBVIR_VERSION_NUMBER);
if (virFileWriteStr(filename, xml, 0600) < 0) {
virReportSystemError(errno,
_("Failed to save '%s' for '%s'"),
filename, qemuCaps->binary);
goto cleanup;
}
VIR_DEBUG("Saved caps '%s' for '%s' with (%lld, %lld)",
filename, qemuCaps->binary,
(long long)qemuCaps->ctime,
(long long)virGetSelfLastChanged());
ret = 0;
cleanup:
VIR_FREE(xml);
return ret;
}
static int
virQEMUCapsRememberCached(virQEMUCapsPtr qemuCaps, const char *cacheDir)
{
char *capsdir = NULL;
char *capsfile = NULL;
int ret = -1;
char *binaryhash = NULL;
if (virAsprintf(&capsdir, "%s/capabilities", cacheDir) < 0)
goto cleanup;
if (virCryptoHashString(VIR_CRYPTO_HASH_SHA256,
qemuCaps->binary,
&binaryhash) < 0)
goto cleanup;
if (virAsprintf(&capsfile, "%s/%s.xml", capsdir, binaryhash) < 0)
goto cleanup;
if (virFileMakePath(capsdir) < 0) {
virReportSystemError(errno,
_("Unable to create directory '%s'"),
capsdir);
goto cleanup;
}
if (virQEMUCapsSaveCache(qemuCaps, capsfile) < 0)
goto cleanup;
ret = 0;
cleanup:
VIR_FREE(binaryhash);
VIR_FREE(capsfile);
VIR_FREE(capsdir);
return ret;
}
static void
virQEMUCapsReset(virQEMUCapsPtr qemuCaps)
{
size_t i;
virBitmapClearAll(qemuCaps->flags);
qemuCaps->version = qemuCaps->kvmVersion = 0;
VIR_FREE(qemuCaps->package);
qemuCaps->arch = VIR_ARCH_NONE;
qemuCaps->usedQMP = false;
virObjectUnref(qemuCaps->kvmCPUModels);
qemuCaps->kvmCPUModels = NULL;
virObjectUnref(qemuCaps->tcgCPUModels);
qemuCaps->tcgCPUModels = NULL;
for (i = 0; i < qemuCaps->nmachineTypes; i++) {
VIR_FREE(qemuCaps->machineTypes[i].name);
VIR_FREE(qemuCaps->machineTypes[i].alias);
}
VIR_FREE(qemuCaps->machineTypes);
qemuCaps->nmachineTypes = 0;
VIR_FREE(qemuCaps->gicCapabilities);
qemuCaps->ngicCapabilities = 0;
qemuMonitorCPUModelInfoFree(qemuCaps->hostCPUModelInfo);
qemuCaps->hostCPUModelInfo = NULL;
virCPUDefFree(qemuCaps->hostCPUModel);
qemuCaps->hostCPUModel = NULL;
}
static int
virQEMUCapsInitCached(virCapsPtr caps,
virQEMUCapsPtr qemuCaps,
const char *cacheDir,
uid_t runUid,
gid_t runGid)
{
char *capsdir = NULL;
char *capsfile = NULL;
int ret = -1;
char *binaryhash = NULL;
struct stat sb;
time_t qemuctime = qemuCaps->ctime;
time_t selfctime;
unsigned long selfvers;
if (virAsprintf(&capsdir, "%s/capabilities", cacheDir) < 0)
goto cleanup;
if (virCryptoHashString(VIR_CRYPTO_HASH_SHA256,
qemuCaps->binary,
&binaryhash) < 0)
goto cleanup;
if (virAsprintf(&capsfile, "%s/%s.xml", capsdir, binaryhash) < 0)
goto cleanup;
if (virFileMakePath(capsdir) < 0) {
virReportSystemError(errno,
_("Unable to create directory '%s'"),
capsdir);
goto cleanup;
}
if (stat(capsfile, &sb) < 0) {
if (errno == ENOENT) {
VIR_DEBUG("No cached capabilities '%s' for '%s'",
capsfile, qemuCaps->binary);
ret = 0;
goto cleanup;
}
virReportSystemError(errno,
_("Unable to access cache '%s' for '%s'"),
capsfile, qemuCaps->binary);
goto cleanup;
}
if (virQEMUCapsLoadCache(caps, qemuCaps, capsfile,
&selfctime, &selfvers) < 0) {
VIR_WARN("Failed to load cached caps from '%s' for '%s': %s",
capsfile, qemuCaps->binary, virGetLastErrorMessage());
virResetLastError();
goto discard;
}
if (!virQEMUCapsIsValid(qemuCaps, qemuctime, runUid, runGid))
goto discard;
/* Discard cache if QEMU binary or libvirtd changed */
if (selfctime != virGetSelfLastChanged() ||
selfvers != LIBVIR_VERSION_NUMBER) {
VIR_DEBUG("Outdated capabilities for '%s': libvirt changed "
"(%lld vs %lld, %lu vs %lu)",
qemuCaps->binary,
(long long)selfctime, (long long)virGetSelfLastChanged(),
selfvers, (unsigned long)LIBVIR_VERSION_NUMBER);
goto discard;
}
VIR_DEBUG("Loaded '%s' for '%s' ctime %lld usedQMP=%d",
capsfile, qemuCaps->binary,
(long long)qemuCaps->ctime, qemuCaps->usedQMP);
ret = 1;
cleanup:
qemuCaps->ctime = qemuctime;
VIR_FREE(binaryhash);
VIR_FREE(capsfile);
VIR_FREE(capsdir);
return ret;
discard:
VIR_DEBUG("Dropping cached capabilities '%s' for '%s'",
capsfile, qemuCaps->binary);
ignore_value(unlink(capsfile));
virQEMUCapsReset(qemuCaps);
ret = 0;
goto cleanup;
}
#define QEMU_SYSTEM_PREFIX "qemu-system-"
static int
virQEMUCapsInitHelp(virQEMUCapsPtr qemuCaps, uid_t runUid, gid_t runGid, const char *qmperr)
{
virCommandPtr cmd = NULL;
bool is_kvm;
char *help = NULL;
int ret = -1;
const char *tmp;
VIR_DEBUG("qemuCaps=%p", qemuCaps);
tmp = strstr(qemuCaps->binary, QEMU_SYSTEM_PREFIX);
if (tmp) {
tmp += strlen(QEMU_SYSTEM_PREFIX);
qemuCaps->arch = virQEMUCapsArchFromString(tmp);
} else {
qemuCaps->arch = virArchFromHost();
}
cmd = virQEMUCapsProbeCommand(qemuCaps->binary, NULL, runUid, runGid);
virCommandAddArgList(cmd, "-help", NULL);
virCommandSetOutputBuffer(cmd, &help);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
if (virQEMUCapsParseHelpStr(qemuCaps->binary,
help, qemuCaps,
&qemuCaps->version,
&is_kvm,
&qemuCaps->kvmVersion,
false,
qmperr) < 0)
goto cleanup;
/* x86_64 and i686 support PCI-multibus on all machine types
* since forever. For other architectures, it has been changing
* across releases, per machine type, so we can't simply detect
* it here. Thus the rest of the logic is provided in a separate
* helper virQEMUCapsHasPCIMultiBus() which keys off the machine
* stored in virDomainDef and QEMU version number
*/
if (qemuCaps->arch == VIR_ARCH_X86_64 ||
qemuCaps->arch == VIR_ARCH_I686)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_PCI_MULTIBUS);
/* -no-acpi is not supported on non-x86
* even if qemu reports it in -help */
if (qemuCaps->arch != VIR_ARCH_X86_64 &&
qemuCaps->arch != VIR_ARCH_I686)
virQEMUCapsClear(qemuCaps, QEMU_CAPS_NO_ACPI);
/* virQEMUCapsExtractDeviceStr will only set additional caps if qemu
* understands the 0.13.0+ notion of "-device driver,". */
if (strstr(help, "-device driver,?") &&
virQEMUCapsExtractDeviceStr(qemuCaps->binary,
qemuCaps, runUid, runGid) < 0) {
goto cleanup;
}
if (virQEMUCapsProbeCPUModels(qemuCaps, runUid, runGid) < 0)
goto cleanup;
if (virQEMUCapsProbeMachineTypes(qemuCaps, runUid, runGid) < 0)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(cmd);
VIR_FREE(help);
return ret;
}
static void virQEMUCapsMonitorNotify(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
void *opaque ATTRIBUTE_UNUSED)
{
}
static qemuMonitorCallbacks callbacks = {
.eofNotify = virQEMUCapsMonitorNotify,
.errorNotify = virQEMUCapsMonitorNotify,
};
/* Capabilities that we assume are always enabled
* for QEMU >= 1.2.0
*/
static void
virQEMUCapsInitQMPBasic(virQEMUCapsPtr qemuCaps)
{
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MEM_PATH);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DRIVE_SERIAL);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_CHARDEV);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MONITOR_JSON);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_SDL);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NETDEV);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_RTC);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_VHOST_NET);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NODEFCONFIG);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_BOOT_MENU);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_FSDEV);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NAME_PROCESS);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_SMBIOS_TYPE);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_VGA_NONE);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DRIVE_AIO);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_CHARDEV_SPICEVMC);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DRIVE_CACHE_DIRECTSYNC);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NO_SHUTDOWN);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DRIVE_CACHE_UNSAFE);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_FSDEV_READONLY);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DRIVE_COPY_ON_READ);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_FSDEV_WRITEOUT);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DRIVE_IOTUNE);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_WAKEUP);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NO_USER_CONFIG);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NETDEV_BRIDGE);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_SECCOMP_SANDBOX);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DTB);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_IPV6_MIGRATION);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_OPT);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DUMP_GUEST_CORE);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_VNC_SHARE_POLICY);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_HOST_PCI_MULTIDOMAIN);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DISPLAY);
}
/* Capabilities that are architecture depending
* initialized for QEMU.
*/
static int
virQEMUCapsInitArchQMPBasic(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
char *archstr = NULL;
int ret = -1;
if (!(archstr = qemuMonitorGetTargetArch(mon)))
return -1;
if ((qemuCaps->arch = virQEMUCapsArchFromString(archstr)) == VIR_ARCH_NONE) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unknown QEMU arch %s"), archstr);
goto cleanup;
}
/* x86_64 and i686 support PCI-multibus on all machine types
* since forever. For other architectures, it has been changing
* across releases, per machine type, so we can't simply detect
* it here. Thus the rest of the logic is provided in a separate
* helper virQEMUCapsHasPCIMultiBus() which keys off the machine
* stored in virDomainDef and QEMU version number
*
* ACPI/HPET/KVM PIT are also x86 specific
*/
if (qemuCaps->arch == VIR_ARCH_X86_64 ||
qemuCaps->arch == VIR_ARCH_I686) {
virQEMUCapsSet(qemuCaps, QEMU_CAPS_PCI_MULTIBUS);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NO_ACPI);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NO_HPET);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NO_KVM_PIT);
}
ret = 0;
cleanup:
VIR_FREE(archstr);
return ret;
}
/**
* virQEMUCapsQMPSchemaObjectGetType:
* @field: name of the object containing the requested type
* @name: name of the requested type
* @namefield: name of the object property holding @name
*
* Helper that selects the type of a QMP schema object member or it's variant
* member. Returns the type string on success or NULL on error.
*/
static const char *
virQEMUCapsQMPSchemaObjectGetType(const char *field,
const char *name,
const char *namefield,
virJSONValuePtr elem)
{
virJSONValuePtr arr;
virJSONValuePtr cur;
const char *curname;
const char *type;
size_t i;
if (!(arr = virJSONValueObjectGetArray(elem, field)))
return NULL;
for (i = 0; i < virJSONValueArraySize(arr); i++) {
if (!(cur = virJSONValueArrayGet(arr, i)) ||
!(curname = virJSONValueObjectGetString(cur, namefield)) ||
!(type = virJSONValueObjectGetString(cur, "type")))
continue;
if (STREQ(name, curname))
return type;
}
return NULL;
}
static virJSONValuePtr
virQEMUCapsQMPSchemaTraverse(const char *baseName,
char **query,
virHashTablePtr schema)
{
virJSONValuePtr base;
const char *metatype;
do {
if (!(base = virHashLookup(schema, baseName)))
return NULL;
if (!*query)
return base;
if (!(metatype = virJSONValueObjectGetString(base, "meta-type")))
return NULL;
/* flatten arrays by default */
if (STREQ(metatype, "array")) {
if (!(baseName = virJSONValueObjectGetString(base, "element-type")))
return NULL;
continue;
} else if (STREQ(metatype, "object")) {
if (**query == '+')
baseName = virQEMUCapsQMPSchemaObjectGetType("variants",
*query + 1,
"case", base);
else
baseName = virQEMUCapsQMPSchemaObjectGetType("members",
*query,
"name", base);
if (!baseName)
return NULL;
} else if (STREQ(metatype, "command") ||
STREQ(metatype, "event")) {
if (!(baseName = virJSONValueObjectGetString(base, *query)))
return NULL;
} else {
/* alternates, basic types and enums can't be entered */
return NULL;
}
query++;
} while (*query);
return base;
}
/**
* virQEMUCapsQMPSchemaGetByPath:
* @query: string specifying the required data type (see below)
* @schema: hash table containing the schema data
* @entry: filled with the located schema object requested by @query
*
* Retrieves the requested schema entry specified by @query to @entry. The
* @query parameter has the following syntax which is very closely tied to the
* qemu schema syntax entries separated by slashes with a few special characters:
*
* "command_or_event/attribute/subattribute/+variant_discriminator/subattribute"
*
* command_or_event: name of the event or attribute to introspect
* attribute: selects whether arguments or return type should be introspected
* ("arg-type" or "ret-type" for commands, "arg-type" for events)
* subattribute: specifies member name of object types
* +variant_discriminator: In the case of unionized objects, select a
* specific case to introspect.
*
* Array types are automatically flattened to the singular type. Alternate
* types are currently not supported.
*
* The above types can be chained arbitrarily using slashes to construct any
* path into the schema tree.
*
* Returns 0 on success (including if the requested schema was not found) and
* fills @entry appropriately. On failure returns -1 and sets an appropriate
* error message.
*/
static int
virQEMUCapsQMPSchemaGetByPath(const char *query,
virHashTablePtr schema,
virJSONValuePtr *entry)
{
char **elems = NULL;
*entry = NULL;
if (!(elems = virStringSplit(query, "/", 0)))
return -1;
if (!*elems) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("malformed query string"));
virStringListFree(elems);
return -1;
}
*entry = virQEMUCapsQMPSchemaTraverse(*elems, elems + 1, schema);
virStringListFree(elems);
return 0;
}
static bool
virQEMUCapsQMPSchemaQueryPath(const char *query,
virHashTablePtr schema)
{
virJSONValuePtr entry;
if (virQEMUCapsQMPSchemaGetByPath(query, schema, &entry))
return false;
return !!entry;
}
static int
virQEMUCapsProbeQMPSchemaCapabilities(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
struct virQEMUCapsStringFlags *entry;
virHashTablePtr schema;
size_t i;
if (!(schema = qemuMonitorQueryQMPSchema(mon)))
return -1;
for (i = 0; i < ARRAY_CARDINALITY(virQEMUCapsQMPSchemaQueries); i++) {
entry = virQEMUCapsQMPSchemaQueries + i;
if (virQEMUCapsQMPSchemaQueryPath(entry->value, schema))
virQEMUCapsSet(qemuCaps, entry->flag);
}
virHashFree(schema);
return 0;
}
int
virQEMUCapsInitQMPMonitor(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
int ret = -1;
int major, minor, micro;
char *package = NULL;
/* @mon is supposed to be locked by callee */
if (qemuMonitorSetCapabilities(mon) < 0) {
VIR_DEBUG("Failed to set monitor capabilities %s",
virGetLastErrorMessage());
ret = 0;
goto cleanup;
}
if (qemuMonitorGetVersion(mon,
&major, &minor, &micro,
&package) < 0) {
VIR_DEBUG("Failed to query monitor version %s",
virGetLastErrorMessage());
ret = 0;
goto cleanup;
}
VIR_DEBUG("Got version %d.%d.%d (%s)",
major, minor, micro, NULLSTR(package));
if (major < 1 || (major == 1 && minor < 2)) {
VIR_DEBUG("Not new enough for QMP capabilities detection");
ret = 0;
goto cleanup;
}
qemuCaps->version = major * 1000000 + minor * 1000 + micro;
qemuCaps->package = package;
qemuCaps->usedQMP = true;
virQEMUCapsInitQMPBasic(qemuCaps);
if (virQEMUCapsInitArchQMPBasic(qemuCaps, mon) < 0)
goto cleanup;
/* USB option is supported v1.3.0 onwards */
if (qemuCaps->version >= 1003000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_USB_OPT);
/* WebSockets were introduced between 1.3.0 and 1.3.1 */
if (qemuCaps->version >= 1003001)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_VNC_WEBSOCKET);
/* -chardev spiceport is supported from 1.4.0, but usable through
* qapi only since 1.5.0, however, it still cannot be queried
* for as a capability */
if (qemuCaps->version >= 1005000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_CHARDEV_SPICEPORT);
if (qemuCaps->version >= 1006000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DEVICE_VIDEO_PRIMARY);
/* vmport option is supported v2.2.0 onwards */
if (qemuCaps->version >= 2002000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_VMPORT_OPT);
/* -cpu ...,aarch64=off supported in v2.3.0 and onwards. But it
isn't detectable via qmp at this point */
if (qemuCaps->arch == VIR_ARCH_AARCH64 &&
qemuCaps->version >= 2003000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_CPU_AARCH64_OFF);
/* vhost-user supports multi-queue from v2.4.0 onwards,
* but there is no way to query for that capability */
if (qemuCaps->version >= 2004000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_VHOSTUSER_MULTIQUEUE);
/* smm option is supported from v2.4.0 */
if (qemuCaps->version >= 2004000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_SMM_OPT);
/* Since 2.4.50 ARM virt machine supports gic-version option */
if (qemuCaps->version >= 2004050)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACH_VIRT_GIC_VERSION);
if (virQEMUCapsProbeQMPCommands(qemuCaps, mon) < 0)
goto cleanup;
/* Some capabilities may differ depending on KVM state */
if (virQEMUCapsProbeQMPKVMState(qemuCaps, mon) < 0)
goto cleanup;
if (virQEMUCapsProbeQMPEvents(qemuCaps, mon) < 0)
goto cleanup;
if (virQEMUCapsProbeQMPObjects(qemuCaps, mon) < 0)
goto cleanup;
if (virQEMUCapsProbeQMPMachineTypes(qemuCaps, mon) < 0)
goto cleanup;
if (virQEMUCapsProbeQMPCPUDefinitions(qemuCaps, mon, false) < 0)
goto cleanup;
if (virQEMUCapsProbeQMPTPM(qemuCaps, mon) < 0)
goto cleanup;
if (virQEMUCapsProbeQMPCommandLine(qemuCaps, mon) < 0)
goto cleanup;
if (virQEMUCapsProbeQMPMigrationCapabilities(qemuCaps, mon) < 0)
goto cleanup;
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_QUERY_QMP_SCHEMA) &&
virQEMUCapsProbeQMPSchemaCapabilities(qemuCaps, mon) < 0)
goto cleanup;
if (virQEMUCapsProbeQMPHostCPU(qemuCaps, mon) < 0)
goto cleanup;
/* 'intel-iommu' shows up as a device since 2.2.0, but can
* not be used with -device until 2.7.0. Before that it
* requires -machine iommu=on. So we must clear the device
* capability we detected on older QEMUs
*/
if (qemuCaps->version < 2007000 &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_INTEL_IOMMU)) {
virQEMUCapsClear(qemuCaps, QEMU_CAPS_DEVICE_INTEL_IOMMU);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_IOMMU);
}
/* GIC capabilities, eg. available GIC versions */
if ((qemuCaps->arch == VIR_ARCH_AARCH64 ||
qemuCaps->arch == VIR_ARCH_ARMV7L) &&
virQEMUCapsProbeQMPGICCapabilities(qemuCaps, mon) < 0)
goto cleanup;
ret = 0;
cleanup:
return ret;
}
int
virQEMUCapsInitQMPMonitorTCG(virQEMUCapsPtr qemuCaps ATTRIBUTE_UNUSED,
qemuMonitorPtr mon)
{
int ret = -1;
if (qemuMonitorSetCapabilities(mon) < 0) {
VIR_DEBUG("Failed to set monitor capabilities %s",
virGetLastErrorMessage());
ret = 0;
goto cleanup;
}
if (virQEMUCapsProbeQMPCPUDefinitions(qemuCaps, mon, true) < 0)
goto cleanup;
ret = 0;
cleanup:
return ret;
}
typedef struct _virQEMUCapsInitQMPCommand virQEMUCapsInitQMPCommand;
typedef virQEMUCapsInitQMPCommand *virQEMUCapsInitQMPCommandPtr;
struct _virQEMUCapsInitQMPCommand {
char *binary;
uid_t runUid;
gid_t runGid;
char **qmperr;
char *monarg;
char *monpath;
char *pidfile;
virCommandPtr cmd;
qemuMonitorPtr mon;
virDomainChrSourceDef config;
pid_t pid;
virDomainObjPtr vm;
};
static void
virQEMUCapsInitQMPCommandAbort(virQEMUCapsInitQMPCommandPtr cmd)
{
if (cmd->mon)
virObjectUnlock(cmd->mon);
qemuMonitorClose(cmd->mon);
cmd->mon = NULL;
virCommandAbort(cmd->cmd);
virCommandFree(cmd->cmd);
cmd->cmd = NULL;
if (cmd->monpath)
ignore_value(unlink(cmd->monpath));
virDomainObjEndAPI(&cmd->vm);
if (cmd->pid != 0) {
char ebuf[1024];
VIR_DEBUG("Killing QMP caps process %lld", (long long) cmd->pid);
if (virProcessKill(cmd->pid, SIGKILL) < 0 && errno != ESRCH)
VIR_ERROR(_("Failed to kill process %lld: %s"),
(long long) cmd->pid,
virStrerror(errno, ebuf, sizeof(ebuf)));
VIR_FREE(*cmd->qmperr);
}
if (cmd->pidfile)
unlink(cmd->pidfile);
cmd->pid = 0;
}
static void
virQEMUCapsInitQMPCommandFree(virQEMUCapsInitQMPCommandPtr cmd)
{
if (!cmd)
return;
virQEMUCapsInitQMPCommandAbort(cmd);
VIR_FREE(cmd->binary);
VIR_FREE(cmd->monpath);
VIR_FREE(cmd->monarg);
VIR_FREE(cmd->pidfile);
VIR_FREE(cmd);
}
static virQEMUCapsInitQMPCommandPtr
virQEMUCapsInitQMPCommandNew(char *binary,
const char *libDir,
uid_t runUid,
gid_t runGid,
char **qmperr)
{
virQEMUCapsInitQMPCommandPtr cmd = NULL;
if (VIR_ALLOC(cmd) < 0)
goto error;
if (VIR_STRDUP(cmd->binary, binary) < 0)
goto error;
cmd->runUid = runUid;
cmd->runGid = runGid;
cmd->qmperr = qmperr;
/* the ".sock" sufix is important to avoid a possible clash with a qemu
* domain called "capabilities"
*/
if (virAsprintf(&cmd->monpath, "%s/%s", libDir,
"capabilities.monitor.sock") < 0)
goto error;
if (virAsprintf(&cmd->monarg, "unix:%s,server,nowait", cmd->monpath) < 0)
goto error;
/* ".pidfile" suffix is used rather than ".pid" to avoid a possible clash
* with a qemu domain called "capabilities"
* Normally we'd use runDir for pid files, but because we're using
* -daemonize we need QEMU to be allowed to create them, rather
* than libvirtd. So we're using libDir which QEMU can write to
*/
if (virAsprintf(&cmd->pidfile, "%s/%s", libDir, "capabilities.pidfile") < 0)
goto error;
virPidFileForceCleanupPath(cmd->pidfile);
cmd->config.type = VIR_DOMAIN_CHR_TYPE_UNIX;
cmd->config.data.nix.path = cmd->monpath;
cmd->config.data.nix.listen = false;
return cmd;
error:
virQEMUCapsInitQMPCommandFree(cmd);
return NULL;
}
/* Returns -1 on fatal error,
* 0 on success,
* 1 when probing QEMU failed
*/
static int
virQEMUCapsInitQMPCommandRun(virQEMUCapsInitQMPCommandPtr cmd,
bool forceTCG)
{
virDomainXMLOptionPtr xmlopt = NULL;
const char *machine;
int status = 0;
int ret = -1;
if (forceTCG)
machine = "none,accel=tcg";
else
machine = "none,accel=kvm:tcg";
VIR_DEBUG("Try to probe capabilities of '%s' via QMP, machine %s",
cmd->binary, machine);
/*
* We explicitly need to use -daemonize here, rather than
* virCommandDaemonize, because we need to synchronize
* with QEMU creating its monitor socket API. Using
* daemonize guarantees control won't return to libvirt
* until the socket is present.
*/
cmd->cmd = virCommandNewArgList(cmd->binary,
"-S",
"-no-user-config",
"-nodefaults",
"-nographic",
"-machine", machine,
"-qmp", cmd->monarg,
"-pidfile", cmd->pidfile,
"-daemonize",
NULL);
virCommandAddEnvPassCommon(cmd->cmd);
virCommandClearCaps(cmd->cmd);
virCommandSetGID(cmd->cmd, cmd->runGid);
virCommandSetUID(cmd->cmd, cmd->runUid);
virCommandSetErrorBuffer(cmd->cmd, cmd->qmperr);
/* Log, but otherwise ignore, non-zero status. */
if (virCommandRun(cmd->cmd, &status) < 0)
goto cleanup;
if (status != 0) {
VIR_DEBUG("QEMU %s exited with status %d: %s",
cmd->binary, status, *cmd->qmperr);
goto ignore;
}
if (virPidFileReadPath(cmd->pidfile, &cmd->pid) < 0) {
VIR_DEBUG("Failed to read pidfile %s", cmd->pidfile);
goto ignore;
}
if (!(xmlopt = virDomainXMLOptionNew(NULL, NULL, NULL)) ||
!(cmd->vm = virDomainObjNew(xmlopt)))
goto cleanup;
cmd->vm->pid = cmd->pid;
if (!(cmd->mon = qemuMonitorOpen(cmd->vm, &cmd->config, true,
&callbacks, NULL)))
goto ignore;
virObjectLock(cmd->mon);
ret = 0;
cleanup:
if (!cmd->mon)
virQEMUCapsInitQMPCommandAbort(cmd);
virObjectUnref(xmlopt);
return ret;
ignore:
ret = 1;
goto cleanup;
}
static int
virQEMUCapsInitQMP(virQEMUCapsPtr qemuCaps,
const char *libDir,
uid_t runUid,
gid_t runGid,
char **qmperr)
{
virQEMUCapsInitQMPCommandPtr cmd = NULL;
int ret = -1;
int rc;
if (!(cmd = virQEMUCapsInitQMPCommandNew(qemuCaps->binary, libDir,
runUid, runGid, qmperr)))
goto cleanup;
if ((rc = virQEMUCapsInitQMPCommandRun(cmd, false)) != 0) {
if (rc == 1)
ret = 0;
goto cleanup;
}
if (virQEMUCapsInitQMPMonitor(qemuCaps, cmd->mon) < 0)
goto cleanup;
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM)) {
virQEMUCapsInitQMPCommandAbort(cmd);
if ((rc = virQEMUCapsInitQMPCommandRun(cmd, true)) != 0) {
if (rc == 1)
ret = 0;
goto cleanup;
}
if (virQEMUCapsInitQMPMonitorTCG(qemuCaps, cmd->mon) < 0)
goto cleanup;
}
ret = 0;
cleanup:
virQEMUCapsInitQMPCommandFree(cmd);
return ret;
}
#define MESSAGE_ID_CAPS_PROBE_FAILURE "8ae2f3fb-2dbe-498e-8fbd-012d40afa361"
static void
virQEMUCapsLogProbeFailure(const char *binary)
{
virLogMetadata meta[] = {
{ .key = "MESSAGE_ID", .s = MESSAGE_ID_CAPS_PROBE_FAILURE, .iv = 0 },
{ .key = "LIBVIRT_QEMU_BINARY", .s = binary, .iv = 0 },
{ .key = NULL },
};
virLogMessage(&virLogSelf,
VIR_LOG_WARN,
__FILE__, __LINE__, __func__,
meta,
_("Failed to probe capabilities for %s: %s"),
binary, virGetLastErrorMessage());
}
virQEMUCapsPtr
virQEMUCapsNewForBinaryInternal(virCapsPtr caps,
const char *binary,
const char *libDir,
const char *cacheDir,
uid_t runUid,
gid_t runGid,
bool qmpOnly)
{
virQEMUCapsPtr qemuCaps;
struct stat sb;
int rv;
char *qmperr = NULL;
if (!(qemuCaps = virQEMUCapsNew()))
goto error;
if (VIR_STRDUP(qemuCaps->binary, binary) < 0)
goto error;
/* We would also want to check faccessat if we cared about ACLs,
* but we don't. */
if (stat(binary, &sb) < 0) {
virReportSystemError(errno, _("Cannot check QEMU binary %s"),
binary);
goto error;
}
qemuCaps->ctime = sb.st_ctime;
/* Make sure the binary we are about to try exec'ing exists.
* Technically we could catch the exec() failure, but that's
* in a sub-process so it's hard to feed back a useful error.
*/
if (!virFileIsExecutable(binary)) {
virReportSystemError(errno, _("QEMU binary %s is not executable"),
binary);
goto error;
}
if (!cacheDir)
rv = 0;
else if ((rv = virQEMUCapsInitCached(caps, qemuCaps, cacheDir,
runUid, runGid)) < 0)
goto error;
if (rv == 0) {
if (virQEMUCapsInitQMP(qemuCaps, libDir, runUid, runGid, &qmperr) < 0) {
virQEMUCapsLogProbeFailure(binary);
goto error;
}
if (qmpOnly && !qemuCaps->usedQMP) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to probe QEMU binary with QMP: %s"),
qmperr ? qmperr : _("unknown error"));
virQEMUCapsLogProbeFailure(binary);
goto error;
}
if (!qemuCaps->usedQMP &&
virQEMUCapsInitHelp(qemuCaps, runUid, runGid, qmperr) < 0) {
virQEMUCapsLogProbeFailure(binary);
goto error;
}
if (cacheDir &&
virQEMUCapsRememberCached(qemuCaps, cacheDir) < 0)
goto error;
virQEMUCapsInitHostCPUModel(qemuCaps, caps);
}
cleanup:
VIR_FREE(qmperr);
return qemuCaps;
error:
virObjectUnref(qemuCaps);
qemuCaps = NULL;
goto cleanup;
}
static virQEMUCapsPtr
virQEMUCapsNewForBinary(virCapsPtr caps,
const char *binary,
const char *libDir,
const char *cacheDir,
uid_t runUid,
gid_t runGid)
{
return virQEMUCapsNewForBinaryInternal(caps, binary, libDir, cacheDir,
runUid, runGid, false);
}
bool
virQEMUCapsIsValid(virQEMUCapsPtr qemuCaps,
time_t qemuctime,
uid_t runUid,
gid_t runGid)
{
bool kvmUsable;
if (!qemuCaps->binary)
return true;
if (!qemuctime) {
struct stat sb;
if (stat(qemuCaps->binary, &sb) < 0) {
char ebuf[1024];
VIR_DEBUG("Failed to stat QEMU binary '%s': %s",
qemuCaps->binary,
virStrerror(errno, ebuf, sizeof(ebuf)));
return false;
}
qemuctime = sb.st_ctime;
}
if (qemuctime != qemuCaps->ctime) {
VIR_DEBUG("Outdated capabilities for '%s': QEMU binary changed "
"(%lld vs %lld)",
qemuCaps->binary,
(long long) qemuctime, (long long) qemuCaps->ctime);
return false;
}
kvmUsable = virFileAccessibleAs("/dev/kvm", R_OK | W_OK,
runUid, runGid) == 0;
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM) &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_ENABLE_KVM) &&
kvmUsable) {
VIR_DEBUG("KVM was not enabled when probing '%s', "
"but it should be usable now",
qemuCaps->binary);
return false;
}
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM) &&
!kvmUsable) {
VIR_DEBUG("KVM was enabled when probing '%s', "
"but it is not available now",
qemuCaps->binary);
return false;
}
return true;
}
struct virQEMUCapsMachineTypeFilter {
const char *machineType;
virQEMUCapsFlags *flags;
size_t nflags;
};
static const struct virQEMUCapsMachineTypeFilter virQEMUCapsMachineFilter[] = {
/* { "blah", virQEMUCapsMachineBLAHFilter,
ARRAY_CARDINALITY(virQEMUCapsMachineBLAHFilter) }, */
{ "", NULL, 0 },
};
void
virQEMUCapsFilterByMachineType(virQEMUCapsPtr qemuCaps,
const char *machineType)
{
size_t i;
if (!machineType)
return;
for (i = 0; i < ARRAY_CARDINALITY(virQEMUCapsMachineFilter); i++) {
const struct virQEMUCapsMachineTypeFilter *filter = &virQEMUCapsMachineFilter[i];
size_t j;
if (STRNEQ(filter->machineType, machineType))
continue;
for (j = 0; j < filter->nflags; j++)
virQEMUCapsClear(qemuCaps, filter->flags[j]);
}
if (!virQEMUCapsGetMachineHotplugCpus(qemuCaps, machineType))
virQEMUCapsClear(qemuCaps, QEMU_CAPS_QUERY_HOTPLUGGABLE_CPUS);
}
virQEMUCapsCachePtr
virQEMUCapsCacheNew(const char *libDir,
const char *cacheDir,
uid_t runUid,
gid_t runGid)
{
virQEMUCapsCachePtr cache;
if (VIR_ALLOC(cache) < 0)
return NULL;
if (virMutexInit(&cache->lock) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to initialize mutex"));
VIR_FREE(cache);
return NULL;
}
if (!(cache->binaries = virHashCreate(10, virObjectFreeHashData)))
goto error;
if (VIR_STRDUP(cache->libDir, libDir) < 0)
goto error;
if (VIR_STRDUP(cache->cacheDir, cacheDir) < 0)
goto error;
cache->runUid = runUid;
cache->runGid = runGid;
return cache;
error:
virQEMUCapsCacheFree(cache);
return NULL;
}
static void ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
virQEMUCapsCacheValidate(virQEMUCapsCachePtr cache,
const char *binary,
virCapsPtr caps,
virQEMUCapsPtr *qemuCaps)
{
if (*qemuCaps &&
!virQEMUCapsIsValid(*qemuCaps, 0, cache->runUid, cache->runGid)) {
VIR_DEBUG("Cached capabilities %p no longer valid for %s",
*qemuCaps, binary);
virHashRemoveEntry(cache->binaries, binary);
*qemuCaps = NULL;
}
if (!*qemuCaps) {
VIR_DEBUG("Creating capabilities for %s", binary);
*qemuCaps = virQEMUCapsNewForBinary(caps, binary,
cache->libDir, cache->cacheDir,
cache->runUid, cache->runGid);
if (*qemuCaps) {
VIR_DEBUG("Caching capabilities %p for %s", *qemuCaps, binary);
if (virHashAddEntry(cache->binaries, binary, *qemuCaps) < 0) {
virObjectUnref(*qemuCaps);
*qemuCaps = NULL;
}
}
}
}
const char *qemuTestCapsName;
virQEMUCapsPtr
virQEMUCapsCacheLookup(virCapsPtr caps,
virQEMUCapsCachePtr cache,
const char *binary)
{
virQEMUCapsPtr ret = NULL;
/* This is used only by test suite!!! */
if (qemuTestCapsName)
binary = qemuTestCapsName;
virMutexLock(&cache->lock);
ret = virHashLookup(cache->binaries, binary);
virQEMUCapsCacheValidate(cache, binary, caps, &ret);
virObjectRef(ret);
virMutexUnlock(&cache->lock);
VIR_DEBUG("Returning caps %p for %s", ret, binary);
return ret;
}
virQEMUCapsPtr
virQEMUCapsCacheLookupCopy(virCapsPtr caps,
virQEMUCapsCachePtr cache,
const char *binary,
const char *machineType)
{
virQEMUCapsPtr qemuCaps = virQEMUCapsCacheLookup(caps, cache, binary);
virQEMUCapsPtr ret;
if (!qemuCaps)
return NULL;
ret = virQEMUCapsNewCopy(qemuCaps);
virObjectUnref(qemuCaps);
if (!ret)
return NULL;
virQEMUCapsFilterByMachineType(ret, machineType);
return ret;
}
static int
virQEMUCapsCompareArch(const void *payload,
const void *name ATTRIBUTE_UNUSED,
const void *opaque)
{
struct virQEMUCapsSearchData *data = (struct virQEMUCapsSearchData *) opaque;
const virQEMUCaps *qemuCaps = payload;
return qemuCaps->arch == data->arch;
}
virQEMUCapsPtr
virQEMUCapsCacheLookupByArch(virCapsPtr caps,
virQEMUCapsCachePtr cache,
virArch arch)
{
virQEMUCapsPtr ret = NULL;
virArch target;
struct virQEMUCapsSearchData data = { .arch = arch };
virMutexLock(&cache->lock);
ret = virHashSearch(cache->binaries, virQEMUCapsCompareArch, &data);
if (!ret) {
/* If the first attempt at finding capabilities has failed, try
* again using the QEMU target as lookup key instead */
target = virQEMUCapsFindTarget(virArchFromHost(), data.arch);
if (target != data.arch) {
data.arch = target;
ret = virHashSearch(cache->binaries, virQEMUCapsCompareArch, &data);
}
}
if (ret) {
char *binary;
if (VIR_STRDUP(binary, ret->binary) < 0) {
ret = NULL;
} else {
virQEMUCapsCacheValidate(cache, binary, caps, &ret);
VIR_FREE(binary);
}
} else {
virReportError(VIR_ERR_INVALID_ARG,
_("unable to find any emulator to serve '%s' "
"architecture"), virArchToString(arch));
}
virObjectRef(ret);
virMutexUnlock(&cache->lock);
VIR_DEBUG("Returning caps %p for arch %s", ret, virArchToString(arch));
return ret;
}
void
virQEMUCapsCacheFree(virQEMUCapsCachePtr cache)
{
if (!cache)
return;
VIR_FREE(cache->libDir);
VIR_FREE(cache->cacheDir);
virHashFree(cache->binaries);
virMutexDestroy(&cache->lock);
VIR_FREE(cache);
}
bool
virQEMUCapsSupportsChardev(const virDomainDef *def,
virQEMUCapsPtr qemuCaps,
virDomainChrDefPtr chr)
{
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_CHARDEV))
return false;
if ((def->os.arch == VIR_ARCH_PPC) || ARCH_IS_PPC64(def->os.arch)) {
if (!qemuDomainMachineIsPSeries(def))
return false;
/* only pseries need -device spapr-vty with -chardev */
if (chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_SERIAL &&
chr->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO)
return false;
}
if ((def->os.arch != VIR_ARCH_ARMV7L) && (def->os.arch != VIR_ARCH_AARCH64))
return true;
/* This may not be true for all ARM machine types, but at least
* the only supported non-virtio serial devices of vexpress and versatile
* don't have the -chardev property wired up. */
return (chr->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_MMIO ||
(chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_CONSOLE &&
chr->targetType == VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_VIRTIO));
}
bool
virQEMUCapsSupportsVmport(virQEMUCapsPtr qemuCaps,
const virDomainDef *def)
{
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_MACHINE_VMPORT_OPT))
return false;
return qemuDomainMachineIsI440FX(def) ||
qemuDomainMachineIsQ35(def) ||
STREQ(def->os.machine, "isapc");
}
bool
virQEMUCapsSupportsSMM(virQEMUCapsPtr qemuCaps,
const virDomainDef *def)
{
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_MACHINE_SMM_OPT))
return false;
return qemuDomainMachineIsQ35(def);
}
bool
virQEMUCapsIsMachineSupported(virQEMUCapsPtr qemuCaps,
const char *canonical_machine)
{
size_t i;
for (i = 0; i < qemuCaps->nmachineTypes; i++) {
if (STREQ(canonical_machine, qemuCaps->machineTypes[i].name))
return true;
}
return false;
}
const char *
virQEMUCapsGetDefaultMachine(virQEMUCapsPtr qemuCaps)
{
if (!qemuCaps->nmachineTypes)
return NULL;
return qemuCaps->machineTypes[0].name;
}
static int
virQEMUCapsFillDomainLoaderCaps(virDomainCapsLoaderPtr capsLoader,
virFirmwarePtr *firmwares,
size_t nfirmwares)
{
size_t i;
capsLoader->supported = true;
if (VIR_ALLOC_N(capsLoader->values.values, nfirmwares) < 0)
return -1;
for (i = 0; i < nfirmwares; i++) {
const char *filename = firmwares[i]->name;
if (!virFileExists(filename)) {
VIR_DEBUG("loader filename=%s does not exist", filename);
continue;
}
if (VIR_STRDUP(capsLoader->values.values[capsLoader->values.nvalues],
filename) < 0)
return -1;
capsLoader->values.nvalues++;
}
VIR_DOMAIN_CAPS_ENUM_SET(capsLoader->type,
VIR_DOMAIN_LOADER_TYPE_ROM);
VIR_DOMAIN_CAPS_ENUM_SET(capsLoader->type,
VIR_DOMAIN_LOADER_TYPE_PFLASH);
VIR_DOMAIN_CAPS_ENUM_SET(capsLoader->readonly,
VIR_TRISTATE_BOOL_YES,
VIR_TRISTATE_BOOL_NO);
return 0;
}
static int
virQEMUCapsFillDomainOSCaps(virDomainCapsOSPtr os,
virFirmwarePtr *firmwares,
size_t nfirmwares)
{
virDomainCapsLoaderPtr capsLoader = &os->loader;
os->supported = true;
if (virQEMUCapsFillDomainLoaderCaps(capsLoader, firmwares, nfirmwares) < 0)
return -1;
return 0;
}
static int
virQEMUCapsFillDomainCPUCaps(virCapsPtr caps,
virQEMUCapsPtr qemuCaps,
virDomainCapsPtr domCaps)
{
if (virQEMUCapsIsCPUModeSupported(qemuCaps, caps, domCaps->virttype,
VIR_CPU_MODE_HOST_PASSTHROUGH))
domCaps->cpu.hostPassthrough = true;
if (virQEMUCapsIsCPUModeSupported(qemuCaps, caps, domCaps->virttype,
VIR_CPU_MODE_HOST_MODEL))
domCaps->cpu.hostModel = virCPUDefCopy(qemuCaps->hostCPUModel);
if (virQEMUCapsIsCPUModeSupported(qemuCaps, caps, domCaps->virttype,
VIR_CPU_MODE_CUSTOM)) {
virDomainCapsCPUModelsPtr filtered = NULL;
char **models = NULL;
const char *blacklist[] = { "host", NULL };
if (virCPUGetModels(domCaps->arch, &models) >= 0) {
virDomainCapsCPUModelsPtr cpus;
if (domCaps->virttype == VIR_DOMAIN_VIRT_KVM)
cpus = qemuCaps->kvmCPUModels;
else
cpus = qemuCaps->tcgCPUModels;
filtered = virDomainCapsCPUModelsFilter(cpus,
(const char **) models,
blacklist);
virStringListFree(models);
}
domCaps->cpu.custom = filtered;
}
return 0;
}
static int
virQEMUCapsFillDomainDeviceDiskCaps(virQEMUCapsPtr qemuCaps,
const char *machine,
virDomainCapsDeviceDiskPtr disk)
{
disk->supported = true;
/* QEMU supports all of these */
VIR_DOMAIN_CAPS_ENUM_SET(disk->diskDevice,
VIR_DOMAIN_DISK_DEVICE_DISK,
VIR_DOMAIN_DISK_DEVICE_CDROM,
VIR_DOMAIN_DISK_DEVICE_LUN);
/* PowerPC pseries based VMs do not support floppy device */
if (!ARCH_IS_PPC64(qemuCaps->arch) ||
(STRNEQ(machine, "pseries") && !STRPREFIX(machine, "pseries-")))
VIR_DOMAIN_CAPS_ENUM_SET(disk->diskDevice, VIR_DOMAIN_DISK_DEVICE_FLOPPY);
VIR_DOMAIN_CAPS_ENUM_SET(disk->bus,
VIR_DOMAIN_DISK_BUS_IDE,
VIR_DOMAIN_DISK_BUS_SCSI,
VIR_DOMAIN_DISK_BUS_VIRTIO,
/* VIR_DOMAIN_DISK_BUS_SD */);
/* PowerPC pseries based VMs do not support floppy device */
if (!ARCH_IS_PPC64(qemuCaps->arch) ||
(STRNEQ(machine, "pseries") && !STRPREFIX(machine, "pseries-")))
VIR_DOMAIN_CAPS_ENUM_SET(disk->bus, VIR_DOMAIN_DISK_BUS_FDC);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_USB_STORAGE))
VIR_DOMAIN_CAPS_ENUM_SET(disk->bus, VIR_DOMAIN_DISK_BUS_USB);
return 0;
}
static int
virQEMUCapsFillDomainDeviceGraphicsCaps(virQEMUCapsPtr qemuCaps,
virDomainCapsDeviceGraphicsPtr dev)
{
dev->supported = true;
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_SDL))
VIR_DOMAIN_CAPS_ENUM_SET(dev->type, VIR_DOMAIN_GRAPHICS_TYPE_SDL);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VNC))
VIR_DOMAIN_CAPS_ENUM_SET(dev->type, VIR_DOMAIN_GRAPHICS_TYPE_VNC);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_SPICE))
VIR_DOMAIN_CAPS_ENUM_SET(dev->type, VIR_DOMAIN_GRAPHICS_TYPE_SPICE);
return 0;
}
static int
virQEMUCapsFillDomainDeviceVideoCaps(virQEMUCapsPtr qemuCaps,
virDomainCapsDeviceVideoPtr dev)
{
dev->supported = true;
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VGA))
VIR_DOMAIN_CAPS_ENUM_SET(dev->modelType, VIR_DOMAIN_VIDEO_TYPE_VGA);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_CIRRUS_VGA))
VIR_DOMAIN_CAPS_ENUM_SET(dev->modelType, VIR_DOMAIN_VIDEO_TYPE_CIRRUS);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VMWARE_SVGA))
VIR_DOMAIN_CAPS_ENUM_SET(dev->modelType, VIR_DOMAIN_VIDEO_TYPE_VMVGA);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_QXL))
VIR_DOMAIN_CAPS_ENUM_SET(dev->modelType, VIR_DOMAIN_VIDEO_TYPE_QXL);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VIRTIO_GPU))
VIR_DOMAIN_CAPS_ENUM_SET(dev->modelType, VIR_DOMAIN_VIDEO_TYPE_VIRTIO);
return 0;
}
static int
virQEMUCapsFillDomainDeviceHostdevCaps(virQEMUCapsPtr qemuCaps,
virDomainCapsDeviceHostdevPtr hostdev)
{
bool supportsPassthroughKVM = qemuHostdevHostSupportsPassthroughLegacy();
bool supportsPassthroughVFIO = qemuHostdevHostSupportsPassthroughVFIO();
hostdev->supported = true;
/* VIR_DOMAIN_HOSTDEV_MODE_CAPABILITIES is for containers only */
VIR_DOMAIN_CAPS_ENUM_SET(hostdev->mode,
VIR_DOMAIN_HOSTDEV_MODE_SUBSYS);
VIR_DOMAIN_CAPS_ENUM_SET(hostdev->startupPolicy,
VIR_DOMAIN_STARTUP_POLICY_DEFAULT,
VIR_DOMAIN_STARTUP_POLICY_MANDATORY,
VIR_DOMAIN_STARTUP_POLICY_REQUISITE,
VIR_DOMAIN_STARTUP_POLICY_OPTIONAL);
VIR_DOMAIN_CAPS_ENUM_SET(hostdev->subsysType,
VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB,
VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_SCSI_GENERIC))
VIR_DOMAIN_CAPS_ENUM_SET(hostdev->subsysType,
VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI);
/* No virDomainHostdevCapsType for QEMU */
virDomainCapsEnumClear(&hostdev->capsType);
virDomainCapsEnumClear(&hostdev->pciBackend);
if (supportsPassthroughVFIO &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VFIO_PCI)) {
VIR_DOMAIN_CAPS_ENUM_SET(hostdev->pciBackend,
VIR_DOMAIN_HOSTDEV_PCI_BACKEND_DEFAULT,
VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO);
}
if (supportsPassthroughKVM) {
VIR_DOMAIN_CAPS_ENUM_SET(hostdev->pciBackend,
VIR_DOMAIN_HOSTDEV_PCI_BACKEND_DEFAULT,
VIR_DOMAIN_HOSTDEV_PCI_BACKEND_KVM);
}
return 0;
}
/**
* virQEMUCapsSupportsGICVersion:
* @qemuCaps: QEMU capabilities
* @virtType: domain type
* @version: GIC version
*
* Checks the QEMU binary with capabilities @qemuCaps supports a specific
* GIC version for a domain of type @virtType.
*
* Returns: true if the binary supports the requested GIC version, false
* otherwise
*/
bool
virQEMUCapsSupportsGICVersion(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType,
virGICVersion version)
{
size_t i;
for (i = 0; i < qemuCaps->ngicCapabilities; i++) {
virGICCapabilityPtr cap = &(qemuCaps->gicCapabilities[i]);
if (cap->version != version)
continue;
if (virtType == VIR_DOMAIN_VIRT_KVM &&
cap->implementation & VIR_GIC_IMPLEMENTATION_KERNEL)
return true;
if (virtType == VIR_DOMAIN_VIRT_QEMU &&
cap->implementation & VIR_GIC_IMPLEMENTATION_EMULATED)
return true;
}
return false;
}
/**
* virQEMUCapsFillDomainFeatureGICCaps:
* @qemuCaps: QEMU capabilities
* @domCaps: domain capabilities
*
* Take the information about GIC capabilities that has been obtained
* using the 'query-gic-capabilities' QMP command and stored in @qemuCaps
* and convert it to a form suitable for @domCaps.
*
* @qemuCaps contains complete information about the GIC capabilities for
* the corresponding QEMU binary, stored as custom objects; @domCaps, on
* the other hand, should only contain information about the GIC versions
* available for the specific combination of architecture, machine type
* and virtualization type. Moreover, a common format is used to store
* information about enumerations in @domCaps, so further processing is
* required.
*
* Returns: 0 on success, <0 on failure
*/
static int
virQEMUCapsFillDomainFeatureGICCaps(virQEMUCapsPtr qemuCaps,
virDomainCapsPtr domCaps)
{
virDomainCapsFeatureGICPtr gic = &domCaps->gic;
virGICVersion version;
if (domCaps->arch != VIR_ARCH_ARMV7L &&
domCaps->arch != VIR_ARCH_AARCH64)
return 0;
if (STRNEQ(domCaps->machine, "virt") &&
!STRPREFIX(domCaps->machine, "virt-"))
return 0;
for (version = VIR_GIC_VERSION_LAST - 1;
version > VIR_GIC_VERSION_NONE;
version--) {
if (!virQEMUCapsSupportsGICVersion(qemuCaps,
domCaps->virttype,
version))
continue;
gic->supported = true;
VIR_DOMAIN_CAPS_ENUM_SET(gic->version,
version);
}
return 0;
}
int
virQEMUCapsFillDomainCaps(virCapsPtr caps,
virDomainCapsPtr domCaps,
virQEMUCapsPtr qemuCaps,
virFirmwarePtr *firmwares,
size_t nfirmwares)
{
virDomainCapsOSPtr os = &domCaps->os;
virDomainCapsDeviceDiskPtr disk = &domCaps->disk;
virDomainCapsDeviceHostdevPtr hostdev = &domCaps->hostdev;
virDomainCapsDeviceGraphicsPtr graphics = &domCaps->graphics;
virDomainCapsDeviceVideoPtr video = &domCaps->video;
domCaps->maxvcpus = virQEMUCapsGetMachineMaxCpus(qemuCaps,
domCaps->machine);
if (domCaps->virttype == VIR_DOMAIN_VIRT_KVM) {
int hostmaxvcpus;
if ((hostmaxvcpus = virHostCPUGetKVMMaxVCPUs()) < 0)
return -1;
domCaps->maxvcpus = MIN(domCaps->maxvcpus, hostmaxvcpus);
}
if (virQEMUCapsFillDomainOSCaps(os, firmwares, nfirmwares) < 0 ||
virQEMUCapsFillDomainCPUCaps(caps, qemuCaps, domCaps) < 0 ||
virQEMUCapsFillDomainDeviceDiskCaps(qemuCaps,
domCaps->machine, disk) < 0 ||
virQEMUCapsFillDomainDeviceGraphicsCaps(qemuCaps, graphics) < 0 ||
virQEMUCapsFillDomainDeviceVideoCaps(qemuCaps, video) < 0 ||
virQEMUCapsFillDomainDeviceHostdevCaps(qemuCaps, hostdev) < 0 ||
virQEMUCapsFillDomainFeatureGICCaps(qemuCaps, domCaps) < 0)
return -1;
return 0;
}
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