Exemplo n.º 1
0
Arquivo: xl.c Projeto: Chong-Li/xen
/* Get autoballoon option based on presence of dom0_mem Xen command
   line option. */
static int auto_autoballoon(void)
{
    const libxl_version_info *info;
    regex_t regex;
    int ret;

    info = libxl_get_version_info(ctx);
    if (!info)
        return 1; /* default to on */

    ret = regcomp(&regex,
                  "(^| )dom0_mem=((|min:|max:)[0-9]+[bBkKmMgG]?,?)+($| )",
                  REG_NOSUB | REG_EXTENDED);
    if (ret)
        return 1;

    ret = regexec(&regex, info->commandline, 0, NULL, 0);
    regfree(&regex);
    return ret == REG_NOMATCH;
}
Exemplo n.º 2
0
int libxl__prepare_acpi(libxl__gc *gc, libxl_domain_build_info *info,
                        struct xc_dom_image *dom)
{
    const libxl_version_info *vers;
    int rc = 0;
    struct acpitable acpitables[MAX_TABLE_NUMS];

    vers = libxl_get_version_info(CTX);
    if (vers == NULL) {
        rc = ERROR_FAIL;
        goto out;
    }

    LOG(DEBUG, "constructing ACPI tables for Xen version %d.%d guest",
        vers->xen_version_major, vers->xen_version_minor);

    dom->acpi_modules[0].data = NULL;
    dom->acpi_modules[0].length = 0;
    dom->acpi_modules[0].guest_addr_out = GUEST_ACPI_BASE;

    rc = libxl__allocate_acpi_tables(gc, info, dom, acpitables);
    if (rc)
        goto out;

    make_acpi_rsdp(gc, dom, acpitables);
    make_acpi_xsdt(gc, dom, acpitables);
    make_acpi_gtdt(gc, dom, acpitables);
    rc = make_acpi_madt(gc, dom, info, acpitables);
    if (rc)
        goto out;

    make_acpi_fadt(gc, dom, acpitables);
    make_acpi_dsdt(gc, dom, acpitables);

out:
    return rc;
}
Exemplo n.º 3
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;
}
Exemplo n.º 4
0
int  hyperxl_initialize_driver(hyperxl_driver** pdriver, bool verbose) {

#ifndef LIBXL_HAVE_BUILDINFO_KERNEL

    return -1;

#else

    hyperxl_driver *driver;
    const libxl_version_info* version = NULL;
    uint32_t mem = 0;
    xentoollog_level log_level = XTL_INFO;

    *pdriver = (hyperxl_driver*)malloc(sizeof(hyperxl_driver));
    if ( *pdriver == NULL ) {
        return -1;
    }

    driver = *pdriver;

    if (verbose) {
        log_level = XTL_DEBUG;
    }
    driver->logger = (xentoollog_logger*)xtl_createlogger_hyperxl(log_level, 0);
    if (driver->logger == NULL) {
        goto release_driver;
    }

    if(libxl_ctx_alloc(&driver->ctx, LIBXL_VERSION, 0, driver->logger)) {
        goto close_logger;
    }

    libxl_childproc_setmode(driver->ctx, &libxl_child_hooks, driver->ctx);

    version = libxl_get_version_info(driver->ctx);
    if (version == NULL) {
        goto free_ctx;
    }

    driver->version = version->xen_version_major * 1000000 + version->xen_version_minor * 1000;
    driver->capabilities = strdup(version->capabilities);

    if(libxl_get_free_memory(driver->ctx, &mem)) {
        goto free_ctx;
    }

    libxl_event_register_callbacks(driver->ctx, &ev_hooks, driver);

    return 0;

free_ctx:
    libxl_ctx_free(driver->ctx);
close_logger:
    xtl_logger_destroy(driver->logger);
release_driver:
    free(driver);
    driver = NULL;
    return -1;

#endif //LIBXL_HAVE_BUILDINFO_KERNEL
}
Exemplo n.º 5
0
libxlDriverConfigPtr
libxlDriverConfigNew(void)
{
    libxlDriverConfigPtr cfg;
    char *log_file = NULL;
    char ebuf[1024];
    unsigned int free_mem;

    if (libxlConfigInitialize() < 0)
        return NULL;

    if (!(cfg = virObjectNew(libxlDriverConfigClass)))
        return NULL;

    if (VIR_STRDUP(cfg->configDir, LIBXL_CONFIG_DIR) < 0)
        goto error;
    if (VIR_STRDUP(cfg->autostartDir, LIBXL_AUTOSTART_DIR) < 0)
        goto error;
    if (VIR_STRDUP(cfg->logDir, LIBXL_LOG_DIR) < 0)
        goto error;
    if (VIR_STRDUP(cfg->stateDir, LIBXL_STATE_DIR) < 0)
        goto error;
    if (VIR_STRDUP(cfg->libDir, LIBXL_LIB_DIR) < 0)
        goto error;
    if (VIR_STRDUP(cfg->saveDir, LIBXL_SAVE_DIR) < 0)
        goto error;
    if (VIR_STRDUP(cfg->autoDumpDir, LIBXL_DUMP_DIR) < 0)
        goto error;

    if (virAsprintf(&log_file, "%s/libxl-driver.log", cfg->logDir) < 0)
        goto error;

    if (virFileMakePath(cfg->logDir) < 0) {
        virReportError(VIR_ERR_INTERNAL_ERROR,
                       _("failed to create log dir '%s': %s"),
                       cfg->logDir,
                       virStrerror(errno, ebuf, sizeof(ebuf)));
        goto error;
    }

    if ((cfg->logger_file = fopen(log_file, "a")) == NULL)  {
        VIR_ERROR(_("Failed to create log file '%s': %s"),
                  log_file, virStrerror(errno, ebuf, sizeof(ebuf)));
        goto error;
    }
    VIR_FREE(log_file);

    cfg->logger =
        (xentoollog_logger *)xtl_createlogger_stdiostream(cfg->logger_file,
                                                          XTL_DEBUG, 0);
    if (!cfg->logger) {
        VIR_ERROR(_("cannot create logger for libxenlight, disabling driver"));
        goto error;
    }

    if (libxl_ctx_alloc(&cfg->ctx, LIBXL_VERSION, 0, cfg->logger)) {
        VIR_ERROR(_("cannot initialize libxenlight context, probably not "
                    "running in a Xen Dom0, disabling driver"));
        goto error;
    }

    if ((cfg->verInfo = libxl_get_version_info(cfg->ctx)) == NULL) {
        VIR_ERROR(_("cannot version information from libxenlight, "
                    "disabling driver"));
        goto error;
    }
    cfg->version = (cfg->verInfo->xen_version_major * 1000000) +
        (cfg->verInfo->xen_version_minor * 1000);

    /* This will fill xenstore info about free and dom0 memory if missing,
     * should be called before starting first domain */
    if (libxl_get_free_memory(cfg->ctx, &free_mem)) {
        VIR_ERROR(_("Unable to configure libxl's memory management parameters"));
        goto error;
    }

    /* setup autoballoon */
    if (libxlGetAutoballoonConf(cfg, &cfg->autoballoon) < 0)
        goto error;

    return cfg;

error:
    VIR_FREE(log_file);
    virObjectUnref(cfg);
    return NULL;
}