Example #1
0
static int testQemuAddPPCGuest(virCapsPtr caps)
{
    static const char *machine[] = { "g3beige",
                                     "mac99",
                                     "prep",
                                     "ppce500v2"
                                   };
    virCapsGuestMachinePtr *machines = NULL;
    virCapsGuestPtr guest;

    machines = virCapabilitiesAllocMachines(machine, 1);
    if (!machines)
        goto error;

    guest = virCapabilitiesAddGuest(caps, "hvm", VIR_ARCH_PPC,
                                    "/usr/bin/qemu-system-ppc", NULL,
                                    1, machines);
    if (!guest)
        goto error;

    if (!virCapabilitiesAddGuestDomain(guest, "qemu", NULL, NULL, 0, NULL))
        goto error;

    return 0;

error:
    /* No way to free a guest? */
    virCapabilitiesFreeMachines(machines, 1);
    return -1;
}
Example #2
0
virCapsPtr openvzCapsInit(void)
{
    virCapsPtr caps;
    virCapsGuestPtr guest;

    if ((caps = virCapabilitiesNew(virArchFromHost(),
                                   false, false)) == NULL)
        goto no_memory;

    if (nodeCapsInitNUMA(NULL, caps) < 0)
        goto no_memory;

    if ((guest = virCapabilitiesAddGuest(caps,
                                         VIR_DOMAIN_OSTYPE_EXE,
                                         caps->host.arch,
                                         NULL,
                                         NULL,
                                         0,
                                         NULL)) == NULL)
        goto no_memory;

    if (virCapabilitiesAddGuestDomain(guest,
                                      VIR_DOMAIN_VIRT_OPENVZ,
                                      NULL,
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto no_memory;

    return caps;

 no_memory:
    virObjectUnref(caps);
    return NULL;
}
Example #3
0
static int testQemuAddS390Guest(virCapsPtr caps)
{
    static const char *s390_machines[] = { "s390-virtio",
                                           "s390-ccw-virtio"
                                         };
    virCapsGuestMachinePtr *machines = NULL;
    virCapsGuestPtr guest;

    machines = virCapabilitiesAllocMachines(s390_machines,
                                            ARRAY_CARDINALITY(s390_machines));
    if (!machines)
        goto error;

    guest = virCapabilitiesAddGuest(caps, "hvm", VIR_ARCH_S390X,
                                    "/usr/bin/qemu-system-s390x", NULL,
                                    ARRAY_CARDINALITY(s390_machines),
                                    machines);
    if (!guest)
        goto error;

    if (!virCapabilitiesAddGuestDomain(guest, "qemu", NULL, NULL, 0, NULL))
        goto error;

    return 0;

error:
    virCapabilitiesFreeMachines(machines, ARRAY_CARDINALITY(s390_machines));
    return -1;
}
Example #4
0
static int testQemuAddPPC64LEGuest(virCapsPtr caps)
{
    static const char *machine[] = { "pseries" };
    virCapsGuestMachinePtr *machines = NULL;
    virCapsGuestPtr guest;

    machines = virCapabilitiesAllocMachines(machine, 1);
    if (!machines)
        goto error;

    guest = virCapabilitiesAddGuest(caps, VIR_DOMAIN_OSTYPE_HVM, VIR_ARCH_PPC64LE,
                                    "/usr/bin/qemu-system-ppc64", NULL,
                                     1, machines);
    if (!guest)
        goto error;

    if (!virCapabilitiesAddGuestDomain(guest, VIR_DOMAIN_VIRT_QEMU, NULL, NULL, 0, NULL))
        goto error;

    return 0;

 error:
    /* No way to free a guest? */
    virCapabilitiesFreeMachines(machines, 1);
    return -1;
}
Example #5
0
virCapsPtr
virBhyveCapsBuild(void)
{
    virCapsPtr caps;
    virCapsGuestPtr guest;

    if ((caps = virCapabilitiesNew(virArchFromHost(),
                                   false, false)) == NULL)
        return NULL;

    if ((guest = virCapabilitiesAddGuest(caps, VIR_DOMAIN_OSTYPE_HVM,
                                         VIR_ARCH_X86_64,
                                         "bhyve",
                                         NULL, 0, NULL)) == NULL)
        goto error;

    if (virCapabilitiesAddGuestDomain(guest, VIR_DOMAIN_VIRT_BHYVE,
                                      NULL, NULL, 0, NULL) == NULL)
        goto error;

    if (virBhyveCapsInitCPU(caps, virArchFromHost()) < 0)
        VIR_WARN("Failed to get host CPU: %s", virGetLastErrorMessage());

    return caps;

 error:
    virObjectUnref(caps);
    return NULL;
}
Example #6
0
static int testQemuAddAARCH64Guest(virCapsPtr caps)
{
    static const char *machines[] = { "virt"};
    virCapsGuestMachinePtr *capsmachines = NULL;
    virCapsGuestPtr guest;

    capsmachines = virCapabilitiesAllocMachines(machines,
                                                ARRAY_CARDINALITY(machines));
    if (!capsmachines)
        goto error;

    guest = virCapabilitiesAddGuest(caps, VIR_DOMAIN_OSTYPE_HVM, VIR_ARCH_AARCH64,
                                    "/usr/bin/qemu-system-aarch64", NULL,
                                    ARRAY_CARDINALITY(machines),
                                    capsmachines);
    if (!guest)
        goto error;

    if (!virCapabilitiesAddGuestDomain(guest, VIR_DOMAIN_VIRT_QEMU, NULL, NULL, 0, NULL))
        goto error;

    return 0;

 error:
    virCapabilitiesFreeMachines(capsmachines, ARRAY_CARDINALITY(machines));
    return -1;
}
Example #7
0
virCapsPtr openvzCapsInit(void)
{
    virCapsPtr caps;
    virCapsGuestPtr guest;

    if ((caps = virCapabilitiesNew(virArchFromHost(),
                                   0, 0)) == NULL)
        goto no_memory;

    if (nodeCapsInitNUMA(caps) < 0)
        goto no_memory;

    if ((guest = virCapabilitiesAddGuest(caps,
                                         "exe",
                                         caps->host.arch,
                                         NULL,
                                         NULL,
                                         0,
                                         NULL)) == NULL)
        goto no_memory;

    if (virCapabilitiesAddGuestDomain(guest,
                                      "openvz",
                                      NULL,
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto no_memory;

    return caps;

no_memory:
    virObjectUnref(caps);
    return NULL;
}
Example #8
0
static void
testCapsInit(void)
{
    virCapsGuestPtr guest = NULL;

    caps = virCapabilitiesNew(VIR_ARCH_I686, true, true);

    if (caps == NULL)
        return;

    virCapabilitiesAddHostMigrateTransport(caps, "esx");

    /* i686 guest */
    guest =
      virCapabilitiesAddGuest(caps, VIR_DOMAIN_OSTYPE_HVM,
                              VIR_ARCH_I686,
                              NULL, NULL, 0, NULL);

    if (guest == NULL)
        goto failure;

    if (virCapabilitiesAddGuestDomain(guest, VIR_DOMAIN_VIRT_VMWARE, NULL, NULL, 0,
                                      NULL) == NULL) {
        goto failure;
    }

    /* x86_64 guest */
    guest =
      virCapabilitiesAddGuest(caps, VIR_DOMAIN_OSTYPE_HVM,
                              VIR_ARCH_X86_64,
                              NULL, NULL, 0, NULL);

    if (guest == NULL)
        goto failure;

    if (virCapabilitiesAddGuestDomain(guest, VIR_DOMAIN_VIRT_VMWARE, NULL, NULL, 0,
                                      NULL) == NULL) {
        goto failure;
    }

    return;

 failure:
    virObjectUnref(caps);
    caps = NULL;
}
Example #9
0
virCapsPtr umlCapsInit(void)
{
    virCapsPtr caps;
    virCapsGuestPtr guest;

    if ((caps = virCapabilitiesNew(virArchFromHost(),
                                   false, false)) == 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 (virCapabilitiesInitNUMA(caps) < 0) {
        virCapabilitiesFreeNUMAInfo(caps);
        VIR_WARN("Failed to query host NUMA topology, disabling NUMA capabilities");
    }

    if (virCapabilitiesInitCaches(caps) < 0)
        VIR_WARN("Failed to get host CPU cache info");

    if (virNodeSuspendGetTargetMask(&caps->host.powerMgmt) < 0)
        VIR_WARN("Failed to get host power management capabilities");

    if (virGetHostUUID(caps->host.host_uuid)) {
        virReportError(VIR_ERR_INTERNAL_ERROR,
                       "%s", _("cannot get the host uuid"));
        goto error;
    }

    if ((guest = virCapabilitiesAddGuest(caps,
                                         VIR_DOMAIN_OSTYPE_UML,
                                         caps->host.arch,
                                         NULL,
                                         NULL,
                                         0,
                                         NULL)) == NULL)
        goto error;

    if (virCapabilitiesAddGuestDomain(guest,
                                      VIR_DOMAIN_VIRT_UML,
                                      NULL,
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto error;

    return caps;

 error:
    virObjectUnref(caps);
    return NULL;
}
Example #10
0
virCapsPtr umlCapsInit(void) {
    struct utsname utsname;
    virCapsPtr caps;
    virCapsGuestPtr guest;

    /* Really, this never fails - look at the man-page. */
    uname (&utsname);

    if ((caps = virCapabilitiesNew(utsname.machine,
                                   0, 0)) == 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 (virGetHostUUID(caps->host.host_uuid)) {
        umlReportError(VIR_ERR_INTERNAL_ERROR,
                       "%s", _("cannot get the host uuid"));
        goto error;
    }

    if ((guest = virCapabilitiesAddGuest(caps,
                                         "uml",
                                         utsname.machine,
                                         STREQ(utsname.machine, "x86_64") ? 64 : 32,
                                         NULL,
                                         NULL,
                                         0,
                                         NULL)) == NULL)
        goto error;

    if (virCapabilitiesAddGuestDomain(guest,
                                      "uml",
                                      NULL,
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto error;

    caps->defaultConsoleTargetType = VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_UML;

    return caps;

 error:
    virCapabilitiesFree(caps);
    return NULL;
}
Example #11
0
static int
vzCapsAddGuestDomain(virCapsPtr caps,
                     virDomainOSType ostype,
                     virArch arch,
                     const char * emulator,
                     virDomainVirtType virt_type)
{
    virCapsGuestPtr guest;

    if ((guest = virCapabilitiesAddGuest(caps, ostype, arch, emulator,
                                         NULL, 0, NULL)) == NULL)
        return -1;


    if (virCapabilitiesAddGuestDomain(guest, virt_type,
                                      NULL, NULL, 0, NULL) == NULL)
        return -1;

    return 0;
}
Example #12
0
virCapsPtr lxctoolsCapabilitiesInit(void)
{
    virCapsPtr caps;
    virCapsGuestPtr guest;

    if ((caps = virCapabilitiesNew(virArchFromHost(),
                                   true, true)) == NULL)
        goto no_memory;

    if (virCapabilitiesInitNUMA(caps) < 0)
        goto no_memory;

    if (virCapabilitiesAddHostMigrateTransport(caps,
                                               "tcp") < 0)
        goto no_memory;

    if ((guest = virCapabilitiesAddGuest(caps,
                                         VIR_DOMAIN_OSTYPE_EXE,
                                         caps->host.arch,
                                         NULL,
                                         NULL,
                                         0,
                                         NULL)) == NULL)
        goto no_memory;

    if (virCapabilitiesAddGuestDomain(guest,
                                      VIR_DOMAIN_VIRT_LXCTOOLS,
                                      NULL,
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto no_memory;

    return caps;

 no_memory:
    virObjectUnref(caps);
    return NULL;

}
Example #13
0
static int
libxlCapsInitGuests(libxl_ctx *ctx, virCapsPtr caps)
{
    const libxl_version_info *ver_info;
    int err;
    regex_t regex;
    char *str, *token;
    regmatch_t subs[4];
    char *saveptr = NULL;
    size_t i;
    virArch hostarch = caps->host.arch;

    struct guest_arch guest_archs[32];
    int nr_guest_archs = 0;

    memset(guest_archs, 0, sizeof(guest_archs));

    if ((ver_info = libxl_get_version_info(ctx)) == NULL) {
        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                       _("Failed to get version info from libxenlight"));
        return -1;
    }

    err = regcomp(&regex, XEN_CAP_REGEX, REG_EXTENDED);
    if (err != 0) {
        char error[100];
        regerror(err, &regex, error, sizeof(error));
        virReportError(VIR_ERR_INTERNAL_ERROR,
                       _("Failed to compile regex %s"), error);
        return -1;
    }

    /* Format of capabilities string is documented in the code in
     * xen-unstable.hg/xen/arch/.../setup.c.
     *
     * It is a space-separated list of supported guest architectures.
     *
     * For x86:
     *    TYP-VER-ARCH[p]
     *    ^   ^   ^    ^
     *    |   |   |    +-- PAE supported
     *    |   |   +------- x86_32 or x86_64
     *    |   +----------- the version of Xen, eg. "3.0"
     *    +--------------- "xen" or "hvm" for para or full virt respectively
     *
     * For IA64:
     *    TYP-VER-ARCH[be]
     *    ^   ^   ^    ^
     *    |   |   |    +-- Big-endian supported
     *    |   |   +------- always "ia64"
     *    |   +----------- the version of Xen, eg. "3.0"
     *    +--------------- "xen" or "hvm" for para or full virt respectively
     */

    /* Split capabilities string into tokens. strtok_r is OK here because
     * we "own" the buffer.  Parse out the features from each token.
     */
    for (str = ver_info->capabilities, nr_guest_archs = 0;
         nr_guest_archs < sizeof(guest_archs) / sizeof(guest_archs[0])
                 && (token = strtok_r(str, " ", &saveptr)) != NULL;
         str = NULL) {
        if (regexec(&regex, token, sizeof(subs) / sizeof(subs[0]),
                    subs, 0) == 0) {
            int hvm = STRPREFIX(&token[subs[1].rm_so], "hvm");
            virArch arch;
            int pae = 0, nonpae = 0, ia64_be = 0;

            if (STRPREFIX(&token[subs[2].rm_so], "x86_32")) {
                arch = VIR_ARCH_I686;
                if (subs[3].rm_so != -1 &&
                    STRPREFIX(&token[subs[3].rm_so], "p"))
                    pae = 1;
                else
                    nonpae = 1;
            }
            else if (STRPREFIX(&token[subs[2].rm_so], "x86_64")) {
                arch = VIR_ARCH_X86_64;
            }
            else if (STRPREFIX(&token[subs[2].rm_so], "ia64")) {
                arch = VIR_ARCH_ITANIUM;
                if (subs[3].rm_so != -1 &&
                    STRPREFIX(&token[subs[3].rm_so], "be"))
                    ia64_be = 1;
            }
            else if (STRPREFIX(&token[subs[2].rm_so], "powerpc64")) {
                arch = VIR_ARCH_PPC64;
            } else if (STRPREFIX(&token[subs[2].rm_so], "armv7l")) {
                arch = VIR_ARCH_ARMV7L;
            } else if (STRPREFIX(&token[subs[2].rm_so], "aarch64")) {
                arch = VIR_ARCH_AARCH64;
            } else {
                continue;
            }

            /* Search for existing matching (model,hvm) tuple */
            for (i = 0; i < nr_guest_archs; i++) {
                if ((guest_archs[i].arch == arch) &&
                    guest_archs[i].hvm == hvm)
                    break;
            }

            /* Too many arch flavours - highly unlikely ! */
            if (i >= ARRAY_CARDINALITY(guest_archs))
                continue;
            /* Didn't find a match, so create a new one */
            if (i == nr_guest_archs)
                nr_guest_archs++;

            guest_archs[i].arch = arch;
            guest_archs[i].hvm = hvm;

            /* Careful not to overwrite a previous positive
               setting with a negative one here - some archs
               can do both pae & non-pae, but Xen reports
               separately capabilities so we're merging archs */
            if (pae)
                guest_archs[i].pae = pae;
            if (nonpae)
                guest_archs[i].nonpae = nonpae;
            if (ia64_be)
                guest_archs[i].ia64_be = ia64_be;
        }
    }
    regfree(&regex);

    for (i = 0; i < nr_guest_archs; ++i) {
        virCapsGuestPtr guest;
        char const *const xen_machines[] = {guest_archs[i].hvm ? "xenfv" : "xenpv"};
        virCapsGuestMachinePtr *machines;

        if ((machines = virCapabilitiesAllocMachines(xen_machines, 1)) == NULL)
            return -1;

        if ((guest = virCapabilitiesAddGuest(caps,
                                             guest_archs[i].hvm ? "hvm" : "xen",
                                             guest_archs[i].arch,
                                              "qemu-dm",
                                             (guest_archs[i].hvm ?
                                              "hvmloader" : NULL),
                                             1,
                                             machines)) == NULL) {
            virCapabilitiesFreeMachines(machines, 1);
            return -1;
        }
        machines = NULL;

        if (virCapabilitiesAddGuestDomain(guest,
                                          "xen",
                                          NULL,
                                          NULL,
                                          0,
                                          NULL) == NULL)
            return -1;

        if (guest_archs[i].pae &&
            virCapabilitiesAddGuestFeature(guest,
                                           "pae",
                                           1,
                                           0) == NULL)
            return -1;

        if (guest_archs[i].nonpae &&
            virCapabilitiesAddGuestFeature(guest,
                                           "nonpae",
                                           1,
                                           0) == NULL)
            return -1;

        if (guest_archs[i].ia64_be &&
            virCapabilitiesAddGuestFeature(guest,
                                           "ia64_be",
                                           1,
                                           0) == NULL)
            return -1;

        if (guest_archs[i].hvm) {
            if (virCapabilitiesAddGuestFeature(guest,
                                               "acpi",
                                               1,
                                               1) == NULL)
                return -1;

            if (virCapabilitiesAddGuestFeature(guest, "apic",
                                               1,
                                               0) == NULL)
                return -1;

            if (virCapabilitiesAddGuestFeature(guest,
                                               "hap",
                                               0,
                                               1) == NULL)
                return -1;
        }
    }

    return 0;
}
Example #14
0
static int
qemuCapsInitGuest(virCapsPtr caps,
                  virCapsPtr old_caps,
                  const char *hostmachine,
                  const struct qemu_arch_info *info,
                  int hvm)
{
    virCapsGuestPtr guest;
    int i;
    int haskvm = 0;
    int haskqemu = 0;
    char *kvmbin = NULL;
    char *binary = NULL;
    time_t binary_mtime;
    virCapsGuestMachinePtr *machines = NULL;
    int nmachines = 0;
    struct stat st;
    unsigned int ncpus;
    virBitmapPtr qemuCaps = NULL;
    int ret = -1;

    /* Check for existance of base emulator, or alternate base
     * which can be used with magic cpu choice
     */
    binary = virFindFileInPath(info->binary);

    if (binary == NULL || !virFileIsExecutable(binary)) {
        VIR_FREE(binary);
        binary = virFindFileInPath(info->altbinary);
    }

    /* Can use acceleration for KVM/KQEMU if
     *  - host & guest arches match
     * Or
     *  - hostarch is x86_64 and guest arch is i686
     * The latter simply needs "-cpu qemu32"
     */
    if (STREQ(info->arch, hostmachine) ||
        (STREQ(hostmachine, "x86_64") && STREQ(info->arch, "i686"))) {
        if (access("/dev/kvm", F_OK) == 0) {
            const char *const kvmbins[] = { "/usr/libexec/qemu-kvm", /* RHEL */
                                            "qemu-kvm", /* Fedora */
                                            "kvm" }; /* Upstream .spec */

            for (i = 0; i < ARRAY_CARDINALITY(kvmbins); ++i) {
                kvmbin = virFindFileInPath(kvmbins[i]);

                if (!kvmbin)
                    continue;

                haskvm = 1;
                if (!binary)
                    binary = kvmbin;

                break;
            }
        }

        if (access("/dev/kqemu", F_OK) == 0)
            haskqemu = 1;
    }

    if (!binary)
        return 0;

    /* Ignore binary if extracting version info fails */
    if (qemuCapsExtractVersionInfo(binary, info->arch, NULL, &qemuCaps) < 0) {
        ret = 0;
        goto cleanup;
    }

    if (stat(binary, &st) == 0) {
        binary_mtime = st.st_mtime;
    } else {
        char ebuf[1024];
        VIR_WARN("Failed to stat %s, most peculiar : %s",
                 binary, virStrerror(errno, ebuf, sizeof(ebuf)));
        binary_mtime = 0;
    }

    if (info->machine) {
        virCapsGuestMachinePtr machine;

        if (VIR_ALLOC(machine) < 0) {
            goto no_memory;
        }

        if (!(machine->name = strdup(info->machine))) {
            VIR_FREE(machine);
            goto no_memory;
        }

        nmachines = 1;

        if (VIR_ALLOC_N(machines, nmachines) < 0) {
            VIR_FREE(machine->name);
            VIR_FREE(machine);
            goto no_memory;
        }

        machines[0] = machine;
    } else {
        int probe = 1;
        if (old_caps && binary_mtime)
            probe = !qemuCapsGetOldMachines(hvm ? "hvm" : "xen", info->arch,
                                            info->wordsize, binary, binary_mtime,
                                            old_caps, &machines, &nmachines);
        if (probe &&
            qemuCapsProbeMachineTypes(binary, &machines, &nmachines) < 0)
            goto error;
    }

    /* We register kvm as the base emulator too, since we can
     * just give -no-kvm to disable acceleration if required */
    if ((guest = virCapabilitiesAddGuest(caps,
                                         hvm ? "hvm" : "xen",
                                         info->arch,
                                         info->wordsize,
                                         binary,
                                         NULL,
                                         nmachines,
                                         machines)) == NULL)
        goto error;

    machines = NULL;
    nmachines = 0;

    guest->arch.defaultInfo.emulator_mtime = binary_mtime;

    if (caps->host.cpu &&
        qemuCapsProbeCPUModels(binary, NULL, info->arch, &ncpus, NULL) == 0 &&
        ncpus > 0 &&
        !virCapabilitiesAddGuestFeature(guest, "cpuselection", 1, 0))
        goto error;

    if (qemuCapsGet(qemuCaps, QEMU_CAPS_BOOTINDEX) &&
        !virCapabilitiesAddGuestFeature(guest, "deviceboot", 1, 0))
        goto error;

    if (hvm) {
        if (virCapabilitiesAddGuestDomain(guest,
                                          "qemu",
                                          NULL,
                                          NULL,
                                          0,
                                          NULL) == NULL)
            goto error;

        if (haskqemu &&
            virCapabilitiesAddGuestDomain(guest,
                                          "kqemu",
                                          NULL,
                                          NULL,
                                          0,
                                          NULL) == NULL)
            goto error;

        if (haskvm) {
            virCapsGuestDomainPtr dom;

            if (stat(kvmbin, &st) == 0) {
                binary_mtime = st.st_mtime;
            } else {
                char ebuf[1024];
                VIR_WARN("Failed to stat %s, most peculiar : %s",
                         binary, virStrerror(errno, ebuf, sizeof(ebuf)));
                binary_mtime = 0;
            }

            if (!STREQ(binary, kvmbin)) {
                int probe = 1;
                if (old_caps && binary_mtime)
                    probe = !qemuCapsGetOldMachines("hvm", info->arch, info->wordsize,
                                                    kvmbin, binary_mtime,
                                                    old_caps, &machines, &nmachines);
                if (probe &&
                    qemuCapsProbeMachineTypes(kvmbin, &machines, &nmachines) < 0)
                    goto error;
            }

            if ((dom = virCapabilitiesAddGuestDomain(guest,
                                                     "kvm",
                                                     kvmbin,
                                                     NULL,
                                                     nmachines,
                                                     machines)) == NULL) {
                goto error;
            }

            machines = NULL;
            nmachines = 0;

            dom->info.emulator_mtime = binary_mtime;
        }
    } else {
        if (virCapabilitiesAddGuestDomain(guest,
                                          "kvm",
                                          NULL,
                                          NULL,
                                          0,
                                          NULL) == NULL)
            goto error;
    }

    if (info->nflags) {
        for (i = 0 ; i < info->nflags ; i++) {
            if (virCapabilitiesAddGuestFeature(guest,
                                               info->flags[i].name,
                                               info->flags[i].default_on,
                                               info->flags[i].toggle) == NULL)
                goto error;
        }
    }

    ret = 0;

cleanup:
    if (binary == kvmbin) {
        /* don't double free */
        VIR_FREE(binary);
    } else {
        VIR_FREE(binary);
        VIR_FREE(kvmbin);
    }
    qemuCapsFree(qemuCaps);

    return ret;

no_memory:
    virReportOOMError();

error:
    virCapabilitiesFreeMachines(machines, nmachines);

    goto cleanup;
}
Example #15
0
virCapsPtr testQemuCapsInit(void)
{
    virCapsPtr caps;
    virCapsGuestPtr guest;
    virCapsGuestMachinePtr *machines = NULL;
    int nmachines = 0;

    if (!(caps = virCapabilitiesNew(VIR_ARCH_X86_64, false, false)))
        return NULL;

    /* Add dummy 'none' security_driver. This is equal to setting
     * security_driver = "none" in qemu.conf. */
    if (VIR_ALLOC_N(caps->host.secModels, 1) < 0)
        goto cleanup;
    caps->host.nsecModels = 1;

    if (VIR_STRDUP(caps->host.secModels[0].model, "none") < 0 ||
        VIR_STRDUP(caps->host.secModels[0].doi, "0") < 0)
        goto cleanup;

    if (!(cpuDefault = virCPUDefCopy(&cpuDefaultData)) ||
        !(cpuHaswell = virCPUDefCopy(&cpuHaswellData)))
        goto cleanup;

    caps->host.cpu = cpuDefault;

    caps->host.nnumaCell_max = 4;

    if ((machines = testQemuAllocMachines(&nmachines)) == NULL)
        goto cleanup;

    if ((guest = virCapabilitiesAddGuest(caps, VIR_DOMAIN_OSTYPE_HVM, VIR_ARCH_I686,
                                         "/usr/bin/qemu", NULL,
                                         nmachines, machines)) == NULL ||
        !virCapabilitiesAddGuestFeature(guest, "cpuselection", true, false))
        goto cleanup;
    machines = NULL;

    if (virCapabilitiesAddGuestDomain(guest,
                                      VIR_DOMAIN_VIRT_QEMU,
                                      NULL,
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto cleanup;

    if ((machines = testQemuAllocMachines(&nmachines)) == NULL)
        goto cleanup;

    if (virCapabilitiesAddGuestDomain(guest,
                                      VIR_DOMAIN_VIRT_KVM,
                                      "/usr/bin/qemu-kvm",
                                      NULL,
                                      nmachines,
                                      machines) == NULL)
        goto cleanup;
    machines = NULL;

    if ((machines = testQemuAllocNewerMachines(&nmachines)) == NULL)
        goto cleanup;

    if ((guest = virCapabilitiesAddGuest(caps, VIR_DOMAIN_OSTYPE_HVM, VIR_ARCH_X86_64,
                                         "/usr/bin/qemu-system-x86_64", NULL,
                                         nmachines, machines)) == NULL ||
        !virCapabilitiesAddGuestFeature(guest, "cpuselection", true, false))
        goto cleanup;
    machines = NULL;

    if (virCapabilitiesAddGuestDomain(guest,
                                      VIR_DOMAIN_VIRT_QEMU,
                                      NULL,
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto cleanup;

    if ((machines = testQemuAllocMachines(&nmachines)) == NULL)
        goto cleanup;

    if (virCapabilitiesAddGuestDomain(guest,
                                      VIR_DOMAIN_VIRT_KVM,
                                      "/usr/bin/kvm",
                                      NULL,
                                      nmachines,
                                      machines) == NULL)
        goto cleanup;
    machines = NULL;

    if (virCapabilitiesAddGuestDomain(guest,
                                      VIR_DOMAIN_VIRT_KVM,
                                      "/usr/bin/kvm",
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto cleanup;

    if (testQemuAddPPC64Guest(caps))
        goto cleanup;

    if (testQemuAddPPC64LEGuest(caps))
        goto cleanup;

    if (testQemuAddPPCGuest(caps))
        goto cleanup;

    if (testQemuAddS390Guest(caps))
        goto cleanup;

    if (testQemuAddArmGuest(caps))
        goto cleanup;

    if (testQemuAddAARCH64Guest(caps))
        goto cleanup;

    if (virTestGetDebug()) {
        char *caps_str;

        caps_str = virCapabilitiesFormatXML(caps);
        if (!caps_str)
            goto cleanup;

        VIR_TEST_DEBUG("QEMU driver capabilities:\n%s", caps_str);

        VIR_FREE(caps_str);
    }

    return caps;

 cleanup:
    virCapabilitiesFreeMachines(machines, nmachines);
    if (caps->host.cpu != cpuDefault)
        virCPUDefFree(cpuDefault);
    if (caps->host.cpu != cpuHaswell)
        virCPUDefFree(cpuHaswell);
    virObjectUnref(caps);
    return NULL;
}
Example #16
0
/* Functions */
virCapsPtr virLXCDriverCapsInit(virLXCDriverPtr driver)
{
    virCapsPtr caps;
    virCapsGuestPtr guest;
    virArch altArch;
    char *lxc_path = NULL;

    if ((caps = virCapabilitiesNew(virArchFromHost(),
                                   false, false)) == NULL)
        goto error;

    /* Some machines have problematic NUMA toplogy causing
     * unexpected failures. We don't want to break the lxc
     * 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");
    }

    /* Only probe for power management capabilities in the driver,
     * not in the emulator */
    if (driver && virNodeSuspendGetTargetMask(&caps->host.powerMgmt) < 0)
        VIR_WARN("Failed to get host power management capabilities");

    if (virGetHostUUID(caps->host.host_uuid)) {
        virReportError(VIR_ERR_INTERNAL_ERROR,
                       "%s", _("cannot get the host uuid"));
        goto error;
    }

    if (!(lxc_path = virFileFindResource("libvirt_lxc",
                                         abs_topbuilddir "/src",
                                         LIBEXECDIR)))
        goto error;

    if ((guest = virCapabilitiesAddGuest(caps,
                                         VIR_DOMAIN_OSTYPE_EXE,
                                         caps->host.arch,
                                         lxc_path,
                                         NULL,
                                         0,
                                         NULL)) == NULL)
        goto error;

    if (virCapabilitiesAddGuestDomain(guest,
                                      VIR_DOMAIN_VIRT_LXC,
                                      NULL,
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto error;

    /* On 64-bit hosts, we can use personality() to request a 32bit process */
    if ((altArch = lxcContainerGetAlt32bitArch(caps->host.arch)) != VIR_ARCH_NONE) {
        if ((guest = virCapabilitiesAddGuest(caps,
                                             VIR_DOMAIN_OSTYPE_EXE,
                                             altArch,
                                             lxc_path,
                                             NULL,
                                             0,
                                             NULL)) == NULL)
            goto error;

        if (virCapabilitiesAddGuestDomain(guest,
                                          VIR_DOMAIN_VIRT_LXC,
                                          NULL,
                                          NULL,
                                          0,
                                          NULL) == NULL)
            goto error;
    }

    VIR_FREE(lxc_path);

    if (driver) {
        /* Security driver data */
        const char *doi, *model, *label, *type;

        doi = virSecurityManagerGetDOI(driver->securityManager);
        model = virSecurityManagerGetModel(driver->securityManager);
        label = virSecurityManagerGetBaseLabel(driver->securityManager,
                                               VIR_DOMAIN_VIRT_LXC);
        type = virDomainVirtTypeToString(VIR_DOMAIN_VIRT_LXC);
        /* Allocate the primary security driver for LXC. */
        if (VIR_ALLOC(caps->host.secModels) < 0)
            goto error;
        caps->host.nsecModels = 1;
        if (VIR_STRDUP(caps->host.secModels[0].model, model) < 0)
            goto error;
        if (VIR_STRDUP(caps->host.secModels[0].doi, doi) < 0)
            goto error;
        if (label &&
            virCapabilitiesHostSecModelAddBaseLabel(&caps->host.secModels[0],
                                                    type,
                                                    label) < 0)
            goto error;

        VIR_DEBUG("Initialized caps for security driver \"%s\" with "
                  "DOI \"%s\"", model, doi);
    } else {
        VIR_INFO("No driver, not initializing security driver");
    }

    return caps;

 error:
    VIR_FREE(lxc_path);
    virObjectUnref(caps);
    return NULL;
}
Example #17
0
virCapsPtr
vmwareCapsInit(void)
{
    virCapsPtr caps = NULL;
    virCapsGuestPtr guest = NULL;
    virCPUDefPtr cpu = NULL;
    virCPUDataPtr data = NULL;

    if ((caps = virCapabilitiesNew(virArchFromHost(),
                                   0, 0)) == NULL)
        goto error;

    if (nodeCapsInitNUMA(caps) < 0)
        goto error;

    /* i686 guests are always supported */
    if ((guest = virCapabilitiesAddGuest(caps,
                                         "hvm",
                                         VIR_ARCH_I686,
                                         NULL, NULL, 0, NULL)) == NULL)
        goto error;

    if (virCapabilitiesAddGuestDomain(guest,
                                      "vmware",
                                      NULL, NULL, 0, NULL) == NULL)
        goto error;

    if (VIR_ALLOC(cpu) < 0)
        goto error;

    cpu->arch = caps->host.arch;
    cpu->type = VIR_CPU_TYPE_HOST;

    if (!(data = cpuNodeData(cpu->arch))
        || cpuDecode(cpu, data, NULL, 0, NULL) < 0) {
        goto error;
    }

    /* x86_64 guests are supported if
     *  - Host arch is x86_64
     * Or
     *  - Host CPU is x86_64 with virtualization extensions
     */
    if (caps->host.arch == VIR_ARCH_X86_64 ||
        (cpuHasFeature(data, "lm") &&
         (cpuHasFeature(data, "vmx") ||
          cpuHasFeature(data, "svm")))) {

        if ((guest = virCapabilitiesAddGuest(caps,
                                             "hvm",
                                             VIR_ARCH_X86_64,
                                             NULL, NULL, 0, NULL)) == NULL)
            goto error;

        if (virCapabilitiesAddGuestDomain(guest,
                                          "vmware",
                                          NULL, NULL, 0, NULL) == NULL)
            goto error;
    }

cleanup:
    virCPUDefFree(cpu);
    cpuDataFree(data);

    return caps;

error:
    virObjectUnref(caps);
    goto cleanup;
}
static virCapsPtr
parallelsBuildCapabilities(void)
{
    virCapsPtr caps = NULL;
    virCPUDefPtr cpu = NULL;
    virCPUDataPtr data = NULL;
    virCapsGuestPtr guest;
    virNodeInfo nodeinfo;

    if ((caps = virCapabilitiesNew(virArchFromHost(),
                                   false, false)) == NULL)
        return NULL;

    if (nodeCapsInitNUMA(caps) < 0)
        goto error;

    if ((guest = virCapabilitiesAddGuest(caps, "hvm",
                                         VIR_ARCH_X86_64,
                                         "parallels",
                                         NULL, 0, NULL)) == NULL)
        goto error;

    if ((guest = virCapabilitiesAddGuest(caps, "hvm",
                                         VIR_ARCH_I686,
                                         "parallels",
                                         NULL, 0, NULL)) == NULL)
        goto error;


    if (virCapabilitiesAddGuestDomain(guest,
                                      "parallels", NULL, NULL, 0, NULL) == NULL)
        goto error;

    if ((guest = virCapabilitiesAddGuest(caps, "exe",
                                         VIR_ARCH_X86_64,
                                         "parallels",
                                         NULL, 0, NULL)) == NULL)
        goto error;

    if (virCapabilitiesAddGuestDomain(guest,
                                      "parallels", NULL, NULL, 0, NULL) == NULL)
        goto error;

    if (nodeGetInfo(&nodeinfo))
        goto error;

    if (VIR_ALLOC(cpu) < 0)
        goto error;

    cpu->arch = caps->host.arch;
    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(cpu->arch))
        || cpuDecode(cpu, data, NULL, 0, NULL) < 0) {
        goto cleanup;
    }

 cleanup:
    cpuDataFree(data);
    return caps;

 error:
    virObjectUnref(caps);
    goto cleanup;
}
Example #19
0
virCapsPtr testQemuCapsInit(void) {
    virCapsPtr caps;
    virCapsGuestPtr guest;
    virCapsGuestMachinePtr *machines = NULL;
    int nmachines = 0;
    static const char *const xen_machines[] = {
        "xenner"
    };
    static virCPUFeatureDef host_cpu_features[] = {
        { (char *) "lahf_lm",   -1 },
        { (char *) "xtpr",      -1 },
        { (char *) "cx16",      -1 },
        { (char *) "tm2",       -1 },
        { (char *) "est",       -1 },
        { (char *) "vmx",       -1 },
        { (char *) "ds_cpl",    -1 },
        { (char *) "pbe",       -1 },
        { (char *) "tm",        -1 },
        { (char *) "ht",        -1 },
        { (char *) "ss",        -1 },
        { (char *) "acpi",      -1 },
        { (char *) "ds",        -1 }
    };
    static virCPUDef host_cpu = {
        VIR_CPU_TYPE_HOST,      /* type */
        0,                      /* mode */
        0,                      /* match */
        VIR_ARCH_X86_64,        /* arch */
        (char *) "core2duo",    /* model */
        NULL,                   /* vendor_id */
        0,                      /* fallback */
        (char *) "Intel",       /* vendor */
        1,                      /* sockets */
        2,                      /* cores */
        1,                      /* threads */
        ARRAY_CARDINALITY(host_cpu_features), /* nfeatures */
        ARRAY_CARDINALITY(host_cpu_features), /* nfeatures_max */
        host_cpu_features,      /* features */
        0,                      /* ncells */
        0,                      /* ncells_max */
        NULL,                   /* cells */
        0,                      /* cells_cpus */
    };

    if ((caps = virCapabilitiesNew(host_cpu.arch,
                                   0, 0)) == NULL)
        return NULL;

    if ((caps->host.cpu = virCPUDefCopy(&host_cpu)) == NULL ||
        (machines = testQemuAllocMachines(&nmachines)) == NULL)
        goto cleanup;

    if ((guest = virCapabilitiesAddGuest(caps, "hvm", VIR_ARCH_I686,
                                         "/usr/bin/qemu", NULL,
                                         nmachines, machines)) == NULL ||
        !virCapabilitiesAddGuestFeature(guest, "cpuselection", 1, 0))
        goto cleanup;
    machines = NULL;

    if (virCapabilitiesAddGuestDomain(guest,
                                      "qemu",
                                      NULL,
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto cleanup;

    if ((machines = testQemuAllocNewerMachines(&nmachines)) == NULL)
        goto cleanup;

    if ((guest = virCapabilitiesAddGuest(caps, "hvm", VIR_ARCH_X86_64,
                                         "/usr/bin/qemu-system-x86_64", NULL,
                                         nmachines, machines)) == NULL ||
        !virCapabilitiesAddGuestFeature(guest, "cpuselection", 1, 0))
        goto cleanup;
    machines = NULL;

    if (virCapabilitiesAddGuestDomain(guest,
                                      "qemu",
                                      NULL,
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto cleanup;

    if ((machines = testQemuAllocMachines(&nmachines)) == NULL)
        goto cleanup;

    if (virCapabilitiesAddGuestDomain(guest,
                                      "kvm",
                                      "/usr/bin/kvm",
                                      NULL,
                                      nmachines,
                                      machines) == NULL)
        goto cleanup;
    machines = NULL;

    nmachines = ARRAY_CARDINALITY(xen_machines);
    if ((machines = virCapabilitiesAllocMachines(xen_machines, nmachines)) == NULL)
        goto cleanup;

    if ((guest = virCapabilitiesAddGuest(caps, "xen", VIR_ARCH_X86_64,
                                         "/usr/bin/xenner", NULL,
                                         nmachines, machines)) == NULL)
        goto cleanup;
    machines = NULL;

    if (virCapabilitiesAddGuestDomain(guest,
                                      "kvm",
                                      "/usr/bin/kvm",
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto cleanup;

    if (testQemuAddPPC64Guest(caps))
        goto cleanup;

    if (testQemuAddPPCGuest(caps))
        goto cleanup;

    if (testQemuAddS390Guest(caps))
        goto cleanup;

    if (virTestGetDebug()) {
        char *caps_str;

        caps_str = virCapabilitiesFormatXML(caps);
        if (!caps_str)
            goto cleanup;

        fprintf(stderr, "QEMU driver capabilities:\n%s", caps_str);

        VIR_FREE(caps_str);
    }

    return caps;

cleanup:
    virCapabilitiesFreeMachines(machines, nmachines);
    virObjectUnref(caps);
    return NULL;
}
Example #20
0
/* Functions */
virCapsPtr lxcCapsInit(virLXCDriverPtr driver)
{
    virCapsPtr caps;
    virCapsGuestPtr guest;
    virArch altArch;

    if ((caps = virCapabilitiesNew(virArchFromHost(),
                                   0, 0)) == 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 (virNodeSuspendGetTargetMask(&caps->host.powerMgmt) < 0)
        VIR_WARN("Failed to get host power management capabilities");

    if (virGetHostUUID(caps->host.host_uuid)) {
        virReportError(VIR_ERR_INTERNAL_ERROR,
                       "%s", _("cannot get the host uuid"));
        goto error;
    }

    if ((guest = virCapabilitiesAddGuest(caps,
                                         "exe",
                                         caps->host.arch,
                                         LIBEXECDIR "/libvirt_lxc",
                                         NULL,
                                         0,
                                         NULL)) == NULL)
        goto error;

    if (virCapabilitiesAddGuestDomain(guest,
                                      "lxc",
                                      NULL,
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto error;

    /* On 64-bit hosts, we can use personality() to request a 32bit process */
    if ((altArch = lxcContainerGetAlt32bitArch(caps->host.arch)) != VIR_ARCH_NONE) {
        if ((guest = virCapabilitiesAddGuest(caps,
                                             "exe",
                                             altArch,
                                             LIBEXECDIR "/libvirt_lxc",
                                             NULL,
                                             0,
                                             NULL)) == NULL)
            goto error;

        if (virCapabilitiesAddGuestDomain(guest,
                                          "lxc",
                                          NULL,
                                          NULL,
                                          0,
                                          NULL) == NULL)
            goto error;
    }

    if (driver) {
        /* Security driver data */
        const char *doi, *model;

        doi = virSecurityManagerGetDOI(driver->securityManager);
        model = virSecurityManagerGetModel(driver->securityManager);
        if (STRNEQ(model, "none")) {
            /* Allocate just the primary security driver for LXC. */
            if (VIR_ALLOC(caps->host.secModels) < 0)
                goto no_memory;
            caps->host.nsecModels = 1;
            if (VIR_STRDUP(caps->host.secModels[0].model, model) < 0)
                goto error;
            if (VIR_STRDUP(caps->host.secModels[0].doi, doi) < 0)
                goto error;
        }

        VIR_DEBUG("Initialized caps for security driver \"%s\" with "
                  "DOI \"%s\"", model, doi);
    } else {
        VIR_INFO("No driver, not initializing security driver");
    }

    return caps;

no_memory:
    virReportOOMError();

error:
    virObjectUnref(caps);
    return NULL;
}
Example #21
0
virCapsPtr testQemuCapsInit(void) {
    struct utsname utsname;
    virCapsPtr caps;
    virCapsGuestPtr guest;
    virCapsGuestMachinePtr *machines = NULL;
    int nmachines = 0;
    static const char *const xen_machines[] = {
        "xenner"
    };
    static virCPUFeatureDef host_cpu_features[] = {
        { (char *) "lahf_lm",   -1 },
        { (char *) "xtpr",      -1 },
        { (char *) "cx16",      -1 },
        { (char *) "tm2",       -1 },
        { (char *) "est",       -1 },
        { (char *) "vmx",       -1 },
        { (char *) "ds_cpl",    -1 },
        { (char *) "pbe",       -1 },
        { (char *) "tm",        -1 },
        { (char *) "ht",        -1 },
        { (char *) "ss",        -1 },
        { (char *) "acpi",      -1 },
        { (char *) "ds",        -1 }
    };
    static virCPUDef host_cpu = {
        VIR_CPU_TYPE_HOST,      /* type */
        0,                      /* match */
        (char *) "x86_64",      /* arch */
        (char *) "core2duo",    /* model */
        (char *) "Intel",       /* vendor */
        1,                      /* sockets */
        2,                      /* cores */
        1,                      /* threads */
        ARRAY_CARDINALITY(host_cpu_features), /* nfeatures */
        host_cpu_features       /* features */
    };

    uname (&utsname);
    if ((caps = virCapabilitiesNew(utsname.machine,
                                   0, 0)) == NULL)
        return NULL;

    if ((caps->host.cpu = virCPUDefCopy(&host_cpu)) == NULL ||
        (machines = testQemuAllocMachines(&nmachines)) == NULL)
        goto cleanup;

    caps->ns.parse = qemuDomainDefNamespaceParse;
    caps->ns.free = qemuDomainDefNamespaceFree;
    caps->ns.format = qemuDomainDefNamespaceFormatXML;
    caps->ns.href = qemuDomainDefNamespaceHref;

    if ((guest = virCapabilitiesAddGuest(caps, "hvm", "i686", 32,
                                         "/usr/bin/qemu", NULL,
                                         nmachines, machines)) == NULL)
        goto cleanup;
    machines = NULL;

    if (virCapabilitiesAddGuestDomain(guest,
                                      "qemu",
                                      NULL,
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto cleanup;

    if ((machines = testQemuAllocNewerMachines(&nmachines)) == NULL)
        goto cleanup;

    if ((guest = virCapabilitiesAddGuest(caps, "hvm", "x86_64", 64,
                                         "/usr/bin/qemu-system-x86_64", NULL,
                                         nmachines, machines)) == NULL)
        goto cleanup;
    machines = NULL;

    if (virCapabilitiesAddGuestDomain(guest,
                                      "qemu",
                                      NULL,
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto cleanup;

    if ((machines = testQemuAllocMachines(&nmachines)) == NULL)
        goto cleanup;

    if (virCapabilitiesAddGuestDomain(guest,
                                      "kvm",
                                      "/usr/bin/kvm",
                                      NULL,
                                      nmachines,
                                      machines) == NULL)
        goto cleanup;
    machines = NULL;

    nmachines = ARRAY_CARDINALITY(xen_machines);
    if ((machines = virCapabilitiesAllocMachines(xen_machines, nmachines)) == NULL)
        goto cleanup;

    if ((guest = virCapabilitiesAddGuest(caps, "xen", "x86_64", 64,
                                         "/usr/bin/xenner", NULL,
                                         nmachines, machines)) == NULL)
        goto cleanup;
    machines = NULL;

    if (virCapabilitiesAddGuestDomain(guest,
                                      "kvm",
                                      "/usr/bin/kvm",
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto cleanup;

    if (virTestGetDebug()) {
        char *caps_str;

        caps_str = virCapabilitiesFormatXML(caps);
        if (!caps_str)
            goto cleanup;

        fprintf(stderr, "QEMU driver capabilities:\n%s", caps_str);

        VIR_FREE(caps_str);
    }

    return caps;

cleanup:
    virCapabilitiesFreeMachines(machines, nmachines);
    virCapabilitiesFree(caps);
    return NULL;
}