libxl_conf.c 53.5 KB
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/*
 * libxl_conf.c: libxl configuration management
 *
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 * Copyright (C) 2012-2014 Red Hat, Inc.
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 * Copyright (c) 2011-2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
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 * Copyright (C) 2011 Univention GmbH.
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 *
 * 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
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 * License along with this library.  If not, see
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 * <http://www.gnu.org/licenses/>.
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 *
 * Authors:
 *     Jim Fehlig <jfehlig@novell.com>
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 *     Markus Groß <gross@univention.de>
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 */

#include <config.h>

#include <regex.h>
#include <libxl.h>
#include <sys/types.h>
#include <sys/socket.h>

#include "internal.h"
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#include "virlog.h"
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#include "virerror.h"
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#include "datatypes.h"
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#include "virfile.h"
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#include "virstring.h"
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#include "viralloc.h"
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#include "viruuid.h"
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#include "capabilities.h"
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#include "vircommand.h"
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#include "libxl_domain.h"
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#include "libxl_conf.h"
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#include "libxl_utils.h"
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#include "virstoragefile.h"
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#define VIR_FROM_THIS VIR_FROM_LIBXL

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VIR_LOG_INIT("libxl.libxl_conf");

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/* see xen-unstable.hg/xen/include/asm-x86/cpufeature.h */
#define LIBXL_X86_FEATURE_PAE_MASK 0x40


struct guest_arch {
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    virArch arch;
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    int bits;
    int hvm;
    int pae;
    int nonpae;
    int ia64_be;
};

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#define XEN_CAP_REGEX "(xen|hvm)-[[:digit:]]+\\.[[:digit:]]+-(aarch64|armv7l|x86_32|x86_64|ia64|powerpc64)(p|be)?"
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static virClassPtr libxlDriverConfigClass;
static void libxlDriverConfigDispose(void *obj);

static int libxlConfigOnceInit(void)
{
    if (!(libxlDriverConfigClass = virClassNew(virClassForObject(),
                                               "libxlDriverConfig",
                                               sizeof(libxlDriverConfig),
                                               libxlDriverConfigDispose)))
        return -1;

    return 0;
}

VIR_ONCE_GLOBAL_INIT(libxlConfig)

static void
libxlDriverConfigDispose(void *obj)
{
    libxlDriverConfigPtr cfg = obj;

    virObjectUnref(cfg->caps);
    libxl_ctx_free(cfg->ctx);
    xtl_logger_destroy(cfg->logger);
    if (cfg->logger_file)
        VIR_FORCE_FCLOSE(cfg->logger_file);

    VIR_FREE(cfg->configDir);
    VIR_FREE(cfg->autostartDir);
    VIR_FREE(cfg->logDir);
    VIR_FREE(cfg->stateDir);
    VIR_FREE(cfg->libDir);
    VIR_FREE(cfg->saveDir);
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    VIR_FREE(cfg->autoDumpDir);
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}

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static libxl_action_on_shutdown
libxlActionFromVirLifecycle(virDomainLifecycleAction action)
{
    switch (action) {
    case VIR_DOMAIN_LIFECYCLE_DESTROY:
        return LIBXL_ACTION_ON_SHUTDOWN_DESTROY;

    case VIR_DOMAIN_LIFECYCLE_RESTART:
        return  LIBXL_ACTION_ON_SHUTDOWN_RESTART;

    case VIR_DOMAIN_LIFECYCLE_RESTART_RENAME:
        return LIBXL_ACTION_ON_SHUTDOWN_RESTART_RENAME;

    case VIR_DOMAIN_LIFECYCLE_PRESERVE:
        return LIBXL_ACTION_ON_SHUTDOWN_PRESERVE;

    case VIR_DOMAIN_LIFECYCLE_LAST:
        break;
    }

    return 0;
}


static libxl_action_on_shutdown
libxlActionFromVirLifecycleCrash(virDomainLifecycleCrashAction action)
{

    switch (action) {
    case VIR_DOMAIN_LIFECYCLE_CRASH_DESTROY:
        return LIBXL_ACTION_ON_SHUTDOWN_DESTROY;

    case VIR_DOMAIN_LIFECYCLE_CRASH_RESTART:
        return  LIBXL_ACTION_ON_SHUTDOWN_RESTART;

    case VIR_DOMAIN_LIFECYCLE_CRASH_RESTART_RENAME:
        return LIBXL_ACTION_ON_SHUTDOWN_RESTART_RENAME;

    case VIR_DOMAIN_LIFECYCLE_CRASH_PRESERVE:
        return LIBXL_ACTION_ON_SHUTDOWN_PRESERVE;

    case VIR_DOMAIN_LIFECYCLE_CRASH_COREDUMP_DESTROY:
        return LIBXL_ACTION_ON_SHUTDOWN_COREDUMP_DESTROY;

    case VIR_DOMAIN_LIFECYCLE_CRASH_COREDUMP_RESTART:
        return LIBXL_ACTION_ON_SHUTDOWN_COREDUMP_RESTART;

    case VIR_DOMAIN_LIFECYCLE_CRASH_LAST:
        break;
    }

    return 0;
}


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static int
libxlCapsInitHost(libxl_ctx *ctx, virCapsPtr caps)
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{
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    libxl_physinfo phy_info;
    int host_pae;
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    if (libxl_get_physinfo(ctx, &phy_info) != 0) {
        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                       _("Failed to get node physical info from libxenlight"));
        return -1;
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    }

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    /* hw_caps is an array of 32-bit words whose meaning is listed in
     * xen-unstable.hg/xen/include/asm-x86/cpufeature.h.  Each feature
     * is defined in the form X*32+Y, corresponding to the Y'th bit in
     * the X'th 32-bit word of hw_cap.
     */
    host_pae = phy_info.hw_cap[0] & LIBXL_X86_FEATURE_PAE_MASK;
    if (host_pae &&
        virCapabilitiesAddHostFeature(caps, "pae") < 0)
        return -1;
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    return 0;
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}

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static int
libxlCapsInitNuma(libxl_ctx *ctx, virCapsPtr caps)
{
    libxl_numainfo *numa_info = NULL;
    libxl_cputopology *cpu_topo = NULL;
    int nr_nodes = 0, nr_cpus = 0;
    virCapsHostNUMACellCPUPtr *cpus = NULL;
    int *nr_cpus_node = NULL;
    size_t i;
    int ret = -1;

    /* Let's try to fetch all the topology information */
    numa_info = libxl_get_numainfo(ctx, &nr_nodes);
    if (numa_info == NULL || nr_nodes == 0) {
        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                       _("libxl_get_numainfo failed"));
        goto cleanup;
    } else {
        cpu_topo = libxl_get_cpu_topology(ctx, &nr_cpus);
        if (cpu_topo == NULL || nr_cpus == 0) {
            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                           _("libxl_get_cpu_topology failed"));
            goto cleanup;
        }
    }

    if (VIR_ALLOC_N(cpus, nr_nodes) < 0)
        goto cleanup;

    if (VIR_ALLOC_N(nr_cpus_node, nr_nodes) < 0)
        goto cleanup;

    /* For each node, prepare a list of CPUs belonging to that node */
    for (i = 0; i < nr_cpus; i++) {
        int node = cpu_topo[i].node;

        if (cpu_topo[i].core == LIBXL_CPUTOPOLOGY_INVALID_ENTRY)
            continue;

        nr_cpus_node[node]++;

        if (nr_cpus_node[node] == 1) {
            if (VIR_ALLOC(cpus[node]) < 0)
                goto cleanup;
        } else {
            if (VIR_REALLOC_N(cpus[node], nr_cpus_node[node]) < 0)
                goto cleanup;
        }

        /* Mapping between what libxl tells and what libvirt wants */
        cpus[node][nr_cpus_node[node]-1].id = i;
        cpus[node][nr_cpus_node[node]-1].socket_id = cpu_topo[i].socket;
        cpus[node][nr_cpus_node[node]-1].core_id = cpu_topo[i].core;
        /* Allocate the siblings maps. We will be filling them later */
        cpus[node][nr_cpus_node[node]-1].siblings = virBitmapNew(nr_cpus);
        if (!cpus[node][nr_cpus_node[node]-1].siblings) {
            virReportOOMError();
            goto cleanup;
        }
    }

    /* Let's now populate the siblings bitmaps */
    for (i = 0; i < nr_cpus; i++) {
        int node = cpu_topo[i].node;
        size_t j;

        if (cpu_topo[i].core == LIBXL_CPUTOPOLOGY_INVALID_ENTRY)
            continue;

        for (j = 0; j < nr_cpus_node[node]; j++) {
            if (cpus[node][j].socket_id == cpu_topo[i].socket &&
                cpus[node][j].core_id == cpu_topo[i].core)
                ignore_value(virBitmapSetBit(cpus[node][j].siblings, i));
        }
    }

    for (i = 0; i < nr_nodes; i++) {
        if (numa_info[i].size == LIBXL_NUMAINFO_INVALID_ENTRY)
            continue;

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        if (virCapabilitiesAddHostNUMACell(caps, i,
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                                           numa_info[i].size / 1024,
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                                           nr_cpus_node[i], cpus[i],
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                                           0, NULL,
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                                           0, NULL) < 0) {
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            virCapabilitiesClearHostNUMACellCPUTopology(cpus[i],
                                                        nr_cpus_node[i]);
            goto cleanup;
        }

        /* This is safe, as the CPU list is now stored in the NUMA cell */
        cpus[i] = NULL;
    }

    ret = 0;

 cleanup:
    if (ret != 0) {
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        for (i = 0; cpus && i < nr_nodes; i++)
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            VIR_FREE(cpus[i]);
        virCapabilitiesFreeNUMAInfo(caps);
    }

    VIR_FREE(cpus);
    VIR_FREE(nr_cpus_node);
    libxl_cputopology_list_free(cpu_topo, nr_cpus);
    libxl_numainfo_list_free(numa_info, nr_nodes);

    return ret;
}

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static int
libxlCapsInitGuests(libxl_ctx *ctx, virCapsPtr caps)
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{
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    const libxl_version_info *ver_info;
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    int err;
    regex_t regex;
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    char *str, *token;
    regmatch_t subs[4];
    char *saveptr = NULL;
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    size_t i;
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    struct guest_arch guest_archs[32];
    int nr_guest_archs = 0;

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

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

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    /* 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.
     */
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    for (str = ver_info->capabilities, nr_guest_archs = 0;
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         nr_guest_archs < sizeof(guest_archs) / sizeof(guest_archs[0])
                 && (token = strtok_r(str, " ", &saveptr)) != NULL;
         str = NULL) {
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        if (regexec(&regex, token, sizeof(subs) / sizeof(subs[0]),
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                    subs, 0) == 0) {
            int hvm = STRPREFIX(&token[subs[1].rm_so], "hvm");
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            virArch arch;
            int pae = 0, nonpae = 0, ia64_be = 0;
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            if (STRPREFIX(&token[subs[2].rm_so], "x86_32")) {
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                arch = VIR_ARCH_I686;
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                if (subs[3].rm_so != -1 &&
                    STRPREFIX(&token[subs[3].rm_so], "p"))
                    pae = 1;
                else
                    nonpae = 1;
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            } else if (STRPREFIX(&token[subs[2].rm_so], "x86_64")) {
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                arch = VIR_ARCH_X86_64;
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            } else if (STRPREFIX(&token[subs[2].rm_so], "ia64")) {
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                arch = VIR_ARCH_ITANIUM;
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                if (subs[3].rm_so != -1 &&
                    STRPREFIX(&token[subs[3].rm_so], "be"))
                    ia64_be = 1;
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            } else if (STRPREFIX(&token[subs[2].rm_so], "powerpc64")) {
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                arch = VIR_ARCH_PPC64;
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            } 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;
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            } else {
                continue;
            }

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

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            guest_archs[i].arch = arch;
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            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;
        }
    }
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    regfree(&regex);
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    for (i = 0; i < nr_guest_archs; ++i) {
        virCapsGuestPtr guest;
        char const *const xen_machines[] = {guest_archs[i].hvm ? "xenfv" : "xenpv"};
        virCapsGuestMachinePtr *machines;
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        if ((machines = virCapabilitiesAllocMachines(xen_machines, 1)) == NULL)
            return -1;
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        if ((guest = virCapabilitiesAddGuest(caps,
                                             guest_archs[i].hvm ? "hvm" : "xen",
                                             guest_archs[i].arch,
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                                             LIBXL_EXECBIN_DIR "/qemu-system-i386",
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                                             (guest_archs[i].hvm ?
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                                              LIBXL_FIRMWARE_DIR "/hvmloader" :
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                                              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;
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}

static int
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libxlMakeDomCreateInfo(libxl_ctx *ctx,
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                       virDomainDefPtr def,
                       libxl_domain_create_info *c_info)
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{
    char uuidstr[VIR_UUID_STRING_BUFLEN];

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    libxl_domain_create_info_init(c_info);

    if (STREQ(def->os.type, "hvm"))
        c_info->type = LIBXL_DOMAIN_TYPE_HVM;
    else
        c_info->type = LIBXL_DOMAIN_TYPE_PV;
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    if (VIR_STRDUP(c_info->name, def->name) < 0)
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        goto error;

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    if (def->nseclabels &&
        def->seclabels[0]->type == VIR_DOMAIN_SECLABEL_STATIC) {
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        if (libxl_flask_context_to_sid(ctx,
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                                       def->seclabels[0]->label,
                                       strlen(def->seclabels[0]->label),
                                       &c_info->ssidref)) {
            virReportError(VIR_ERR_INTERNAL_ERROR,
                           _("libxenlight failed to resolve security label '%s'"),
                           def->seclabels[0]->label);
        }
    }

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    virUUIDFormat(def->uuid, uuidstr);
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    if (libxl_uuid_from_string(&c_info->uuid, uuidstr)) {
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        virReportError(VIR_ERR_INTERNAL_ERROR,
                       _("libxenlight failed to parse UUID '%s'"), uuidstr);
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        goto error;
    }

    return 0;

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 error:
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    libxl_domain_create_info_dispose(c_info);
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    return -1;
}

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static int
libxlMakeChrdevStr(virDomainChrDefPtr def, char **buf)
{
    virDomainChrSourceDef srcdef = def->source;
    const char *type = virDomainChrTypeToString(srcdef.type);

    if (!type) {
        virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                       "%s", _("unknown chrdev type"));
        return -1;
    }

    switch (srcdef.type) {
    case VIR_DOMAIN_CHR_TYPE_NULL:
    case VIR_DOMAIN_CHR_TYPE_STDIO:
    case VIR_DOMAIN_CHR_TYPE_VC:
    case VIR_DOMAIN_CHR_TYPE_PTY:
        if (VIR_STRDUP(*buf, type) < 0)
            return -1;
        break;

    case VIR_DOMAIN_CHR_TYPE_FILE:
    case VIR_DOMAIN_CHR_TYPE_PIPE:
        if (virAsprintf(buf, "%s:%s", type, srcdef.data.file.path) < 0)
            return -1;
        break;

    case VIR_DOMAIN_CHR_TYPE_DEV:
        if (VIR_STRDUP(*buf, srcdef.data.file.path) < 0)
            return -1;
        break;

    case VIR_DOMAIN_CHR_TYPE_UDP: {
        const char *connectHost = srcdef.data.udp.connectHost;
        const char *bindHost = srcdef.data.udp.bindHost;
        const char *bindService  = srcdef.data.udp.bindService;

        if (connectHost == NULL)
            connectHost = "";
        if (bindHost == NULL)
            bindHost = "";
        if (bindService == NULL)
            bindService = "0";

        if (virAsprintf(buf, "udp:%s:%s@%s:%s",
                        connectHost,
                        srcdef.data.udp.connectService,
                        bindHost,
                        bindService) < 0)
            return -1;
        break;
    }

    case VIR_DOMAIN_CHR_TYPE_TCP: {
        const char *prefix;

        if (srcdef.data.tcp.protocol == VIR_DOMAIN_CHR_TCP_PROTOCOL_TELNET)
            prefix = "telnet";
        else
            prefix = "tcp";

        if (virAsprintf(buf, "%s:%s:%s%s",
                        prefix,
                        srcdef.data.tcp.host,
                        srcdef.data.tcp.service,
                        srcdef.data.tcp.listen ? ",server,nowait" : "") < 0)
            return -1;
        break;
    }

    case VIR_DOMAIN_CHR_TYPE_UNIX:
        if (virAsprintf(buf, "unix:%s%s",
                        srcdef.data.nix.path,
                        srcdef.data.nix.listen ? ",server,nowait" : "") < 0)
            return -1;
        break;

    default:
        virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                       _("unsupported chardev '%s'"), type);
        return -1;
    }

    return 0;
}

J
Jim Fehlig 已提交
622
static int
623 624 625
libxlMakeDomBuildInfo(virDomainDefPtr def,
                      libxl_ctx *ctx,
                      libxl_domain_config *d_config)
J
Jim Fehlig 已提交
626 627 628
{
    libxl_domain_build_info *b_info = &d_config->b_info;
    int hvm = STREQ(def->os.type, "hvm");
629
    size_t i;
J
Jim Fehlig 已提交
630

J
Jim Fehlig 已提交
631
    libxl_domain_build_info_init(b_info);
J
Jim Fehlig 已提交
632

J
Jim Fehlig 已提交
633 634
    if (hvm)
        libxl_domain_build_info_init_type(b_info, LIBXL_DOMAIN_TYPE_HVM);
635
    else
J
Jim Fehlig 已提交
636
        libxl_domain_build_info_init_type(b_info, LIBXL_DOMAIN_TYPE_PV);
637

J
Jim Fehlig 已提交
638
    b_info->max_vcpus = def->maxvcpus;
639
    if (libxl_cpu_bitmap_alloc(ctx, &b_info->avail_vcpus, def->maxvcpus))
640
        return -1;
641 642 643 644
    libxl_bitmap_set_none(&b_info->avail_vcpus);
    for (i = 0; i < def->vcpus; i++)
        libxl_bitmap_set((&b_info->avail_vcpus), i);

J
Jim Fehlig 已提交
645 646 647 648 649 650 651 652 653 654 655 656 657
    if (def->clock.ntimers > 0 &&
        def->clock.timers[0]->name == VIR_DOMAIN_TIMER_NAME_TSC) {
        switch (def->clock.timers[0]->mode) {
            case VIR_DOMAIN_TIMER_MODE_NATIVE:
                b_info->tsc_mode = 2;
                break;
            case VIR_DOMAIN_TIMER_MODE_PARAVIRT:
                b_info->tsc_mode = 3;
                break;
            default:
                b_info->tsc_mode = 1;
        }
    }
J
Jim Fehlig 已提交
658
    b_info->sched_params.weight = 1000;
659
    b_info->max_memkb = virDomainDefGetMemoryInitial(def);
J
Jim Fehlig 已提交
660 661
    b_info->target_memkb = def->mem.cur_balloon;
    if (hvm) {
662 663
        char bootorder[VIR_DOMAIN_BOOT_LAST + 1];

J
Jim Fehlig 已提交
664
        libxl_defbool_set(&b_info->u.hvm.pae,
665
                          def->features[VIR_DOMAIN_FEATURE_PAE] ==
J
Ján Tomko 已提交
666
                          VIR_TRISTATE_SWITCH_ON);
J
Jim Fehlig 已提交
667
        libxl_defbool_set(&b_info->u.hvm.apic,
668
                          def->features[VIR_DOMAIN_FEATURE_APIC] ==
J
Ján Tomko 已提交
669
                          VIR_TRISTATE_SWITCH_ON);
J
Jim Fehlig 已提交
670
        libxl_defbool_set(&b_info->u.hvm.acpi,
671
                          def->features[VIR_DOMAIN_FEATURE_ACPI] ==
J
Ján Tomko 已提交
672
                          VIR_TRISTATE_SWITCH_ON);
P
Paolo Bonzini 已提交
673 674 675
        for (i = 0; i < def->clock.ntimers; i++) {
            if (def->clock.timers[i]->name == VIR_DOMAIN_TIMER_NAME_HPET &&
                def->clock.timers[i]->present == 1) {
J
Jim Fehlig 已提交
676
                libxl_defbool_set(&b_info->u.hvm.hpet, 1);
P
Paolo Bonzini 已提交
677 678
            }
        }
679
        for (i = 0; i < def->os.nBootDevs; i++) {
680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698
            switch (def->os.bootDevs[i]) {
                case VIR_DOMAIN_BOOT_FLOPPY:
                    bootorder[i] = 'a';
                    break;
                default:
                case VIR_DOMAIN_BOOT_DISK:
                    bootorder[i] = 'c';
                    break;
                case VIR_DOMAIN_BOOT_CDROM:
                    bootorder[i] = 'd';
                    break;
                case VIR_DOMAIN_BOOT_NET:
                    bootorder[i] = 'n';
                    break;
            }
        }
        if (def->os.nBootDevs == 0) {
            bootorder[0] = 'c';
            bootorder[1] = '\0';
699
        } else {
700 701
            bootorder[def->os.nBootDevs] = '\0';
        }
702
        if (VIR_STRDUP(b_info->u.hvm.boot, bootorder) < 0)
703
            return -1;
P
Paolo Bonzini 已提交
704

705 706 707 708 709 710 711 712 713
#ifdef LIBXL_HAVE_BUILDINFO_KERNEL
        if (VIR_STRDUP(b_info->cmdline, def->os.cmdline) < 0)
            return -1;
        if (VIR_STRDUP(b_info->kernel, def->os.kernel) < 0)
            return -1;
        if (VIR_STRDUP(b_info->ramdisk, def->os.initrd) < 0)
            return -1;
#endif

714 715 716 717 718
        if (def->emulator) {
            if (!virFileExists(def->emulator)) {
                virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                               _("emulator '%s' not found"),
                               def->emulator);
719
                return -1;
720 721 722 723 724 725
            }

            if (!virFileIsExecutable(def->emulator)) {
                virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                               _("emulator '%s' is not executable"),
                               def->emulator);
726
                return -1;
727 728 729 730
            }

            VIR_FREE(b_info->device_model);
            if (VIR_STRDUP(b_info->device_model, def->emulator) < 0)
731
                return -1;
732 733 734 735

            b_info->device_model_version = libxlDomainGetEmulatorType(def);
        }

B
Bamvor Jian Zhang 已提交
736 737 738 739 740
        if (def->nserials) {
            if (def->nserials > 1) {
                virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                               "%s",
                               _("Only one serial device is supported by libxl"));
741
                return -1;
B
Bamvor Jian Zhang 已提交
742 743
            }
            if (libxlMakeChrdevStr(def->serials[0], &b_info->u.hvm.serial) < 0)
744
                return -1;
B
Bamvor Jian Zhang 已提交
745 746 747 748 749 750
        }

        if (def->nparallels) {
            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                           "%s",
                           _("Parallel devices are not supported by libxl"));
751
            return -1;
B
Bamvor Jian Zhang 已提交
752 753
        }

754 755 756 757
        /* Disable VNC and SDL until explicitly enabled */
        libxl_defbool_set(&b_info->u.hvm.vnc.enable, 0);
        libxl_defbool_set(&b_info->u.hvm.sdl.enable, 0);

758 759 760 761 762 763 764 765 766 767 768 769 770
        if (def->ninputs) {
#ifdef LIBXL_HAVE_BUILDINFO_USBDEVICE_LIST
            if (VIR_ALLOC_N(b_info->u.hvm.usbdevice_list, def->ninputs+1) < 0)
                return -1;
#else
            if (def->ninputs > 1) {
                virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                        _("libxenlight supports only one input device"));
                return -1;
            }
#endif
            for (i = 0; i < def->ninputs; i++) {
                char **usbdevice;
771 772 773 774

                if (def->inputs[i]->bus != VIR_DOMAIN_INPUT_BUS_USB)
                    continue;

775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798
#ifdef LIBXL_HAVE_BUILDINFO_USBDEVICE_LIST
                usbdevice = &b_info->u.hvm.usbdevice_list[i];
#else
                usbdevice = &b_info->u.hvm.usbdevice;
#endif
                switch (def->inputs[i]->type) {
                    case VIR_DOMAIN_INPUT_TYPE_MOUSE:
                        VIR_FREE(*usbdevice);
                        if (VIR_STRDUP(*usbdevice, "mouse") < 0)
                            return -1;
                        break;
                    case VIR_DOMAIN_INPUT_TYPE_TABLET:
                        VIR_FREE(*usbdevice);
                        if (VIR_STRDUP(*usbdevice, "tablet") < 0)
                            return -1;
                        break;
                    default:
                        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                                _("Unknown input device type"));
                        return -1;
                }
            }
        }

J
Jim Fehlig 已提交
799 800 801 802 803 804 805
        /*
         * The following comment and calculation were taken directly from
         * libxenlight's internal function libxl_get_required_shadow_memory():
         *
         * 256 pages (1MB) per vcpu, plus 1 page per MiB of RAM for the P2M map,
         * plus 1 page per MiB of RAM to shadow the resident processes.
         */
J
Jim Fehlig 已提交
806
        b_info->shadow_memkb = 4 * (256 * libxl_bitmap_count_set(&b_info->avail_vcpus) +
J
Jim Fehlig 已提交
807 808
                                    2 * (b_info->max_memkb / 1024));
    } else {
809 810 811 812 813 814
        /*
         * For compatibility with the legacy xen toolstack, default to pygrub
         * if bootloader is not specified AND direct kernel boot is not specified.
         */
        if (def->os.bootloader) {
            if (VIR_STRDUP(b_info->u.pv.bootloader, def->os.bootloader) < 0)
815
                return -1;
816 817
        } else if (def->os.kernel == NULL) {
            if (VIR_STRDUP(b_info->u.pv.bootloader, LIBXL_BOOTLOADER_PATH) < 0)
818
                return -1;
819
        }
J
Jim Fehlig 已提交
820
        if (def->os.bootloaderArgs) {
J
Jim Fehlig 已提交
821 822
            if (!(b_info->u.pv.bootloader_args =
                  virStringSplit(def->os.bootloaderArgs, " \t\n", 0)))
823
                return -1;
J
Jim Fehlig 已提交
824
        }
825
        if (VIR_STRDUP(b_info->u.pv.cmdline, def->os.cmdline) < 0)
826
            return -1;
J
Jim Fehlig 已提交
827
        if (def->os.kernel) {
828
            /* libxl_init_build_info() sets VIR_STRDUP(kernel.path, "hvmloader") */
J
Jim Fehlig 已提交
829
            VIR_FREE(b_info->u.pv.kernel);
830
            if (VIR_STRDUP(b_info->u.pv.kernel, def->os.kernel) < 0)
831
                return -1;
J
Jim Fehlig 已提交
832
        }
833
        if (VIR_STRDUP(b_info->u.pv.ramdisk, def->os.initrd) < 0)
834
            return -1;
J
Jim Fehlig 已提交
835 836 837 838 839
    }

    return 0;
}

840 841 842 843 844 845
static int
libxlDiskSetDiscard(libxl_device_disk *x_disk, int discard)
{
    if (!x_disk->readwrite)
        return 0;
#if defined(LIBXL_HAVE_LIBXL_DEVICE_DISK_DISCARD_ENABLE)
846
    switch ((virDomainDiskDiscard)discard) {
847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868
    case VIR_DOMAIN_DISK_DISCARD_DEFAULT:
    case VIR_DOMAIN_DISK_DISCARD_LAST:
        break;
    case VIR_DOMAIN_DISK_DISCARD_UNMAP:
        libxl_defbool_set(&x_disk->discard_enable, true);
        break;
    case VIR_DOMAIN_DISK_DISCARD_IGNORE:
        libxl_defbool_set(&x_disk->discard_enable, false);
        break;
    }
    return 0;
#else
    if (discard == VIR_DOMAIN_DISK_DISCARD_DEFAULT)
        return 0;
    virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                   _("This version of libxenlight does not support "
                     "disk 'discard' option passing"));
    return -1;
#endif
}


869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899
#define LIBXL_QEMU_DM_STR  "Options specific to the Xen version:"

int
libxlDomainGetEmulatorType(const virDomainDef *def)
{
    int ret = LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN;
    virCommandPtr cmd = NULL;
    char *output = NULL;

    if (STREQ(def->os.type, "hvm")) {
        if (def->emulator) {
            cmd = virCommandNew(def->emulator);

            virCommandAddArgList(cmd, "-help", NULL);
            virCommandSetOutputBuffer(cmd, &output);

            if (virCommandRun(cmd, NULL) < 0)
                goto cleanup;

            if (strstr(output, LIBXL_QEMU_DM_STR))
                ret = LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN_TRADITIONAL;
        }
    }

 cleanup:
    VIR_FREE(output);
    virCommandFree(cmd);
    return ret;
}


900
int
J
Jim Fehlig 已提交
901
libxlMakeDisk(virDomainDiskDefPtr l_disk, libxl_device_disk *x_disk)
902
{
903 904 905
    const char *driver;
    int format;

906 907
    libxl_device_disk_init(x_disk);

908
    if (VIR_STRDUP(x_disk->pdev_path, virDomainDiskGetSource(l_disk)) < 0)
909 910
        return -1;

911
    if (VIR_STRDUP(x_disk->vdev, l_disk->dst) < 0)
912 913
        return -1;

914 915 916 917 918
    driver = virDomainDiskGetDriver(l_disk);
    format = virDomainDiskGetFormat(l_disk);
    if (driver) {
        if (STREQ(driver, "tap") || STREQ(driver, "tap2")) {
            switch (format) {
919
            case VIR_STORAGE_FILE_QCOW:
J
Jim Fehlig 已提交
920 921
                x_disk->format = LIBXL_DISK_FORMAT_QCOW;
                x_disk->backend = LIBXL_DISK_BACKEND_QDISK;
922 923
                break;
            case VIR_STORAGE_FILE_QCOW2:
J
Jim Fehlig 已提交
924 925
                x_disk->format = LIBXL_DISK_FORMAT_QCOW2;
                x_disk->backend = LIBXL_DISK_BACKEND_QDISK;
926 927
                break;
            case VIR_STORAGE_FILE_VHD:
J
Jim Fehlig 已提交
928 929
                x_disk->format = LIBXL_DISK_FORMAT_VHD;
                x_disk->backend = LIBXL_DISK_BACKEND_TAP;
930 931
                break;
            case VIR_STORAGE_FILE_NONE:
932
                /* No subtype specified, default to raw/tap */
933
            case VIR_STORAGE_FILE_RAW:
J
Jim Fehlig 已提交
934 935
                x_disk->format = LIBXL_DISK_FORMAT_RAW;
                x_disk->backend = LIBXL_DISK_BACKEND_TAP;
936 937 938
                break;
            default:
                virReportError(VIR_ERR_INTERNAL_ERROR,
939 940
                               _("libxenlight does not support disk format %s "
                                 "with disk driver %s"),
941 942
                               virStorageFileFormatTypeToString(format),
                               driver);
943
                return -1;
944
            }
945
        } else if (STREQ(driver, "qemu")) {
J
Jim Fehlig 已提交
946
            x_disk->backend = LIBXL_DISK_BACKEND_QDISK;
947
            switch (format) {
J
Jim Fehlig 已提交
948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965
            case VIR_STORAGE_FILE_QCOW:
                x_disk->format = LIBXL_DISK_FORMAT_QCOW;
                break;
            case VIR_STORAGE_FILE_QCOW2:
                x_disk->format = LIBXL_DISK_FORMAT_QCOW2;
                break;
            case VIR_STORAGE_FILE_VHD:
                x_disk->format = LIBXL_DISK_FORMAT_VHD;
                break;
            case VIR_STORAGE_FILE_NONE:
                /* No subtype specified, default to raw */
            case VIR_STORAGE_FILE_RAW:
                x_disk->format = LIBXL_DISK_FORMAT_RAW;
                break;
            default:
                virReportError(VIR_ERR_INTERNAL_ERROR,
                               _("libxenlight does not support disk format %s "
                                 "with disk driver %s"),
966 967
                               virStorageFileFormatTypeToString(format),
                               driver);
J
Jim Fehlig 已提交
968 969
                return -1;
            }
970 971 972
        } else if (STREQ(driver, "file")) {
            if (format != VIR_STORAGE_FILE_NONE &&
                format != VIR_STORAGE_FILE_RAW) {
973 974 975
                virReportError(VIR_ERR_INTERNAL_ERROR,
                               _("libxenlight does not support disk format %s "
                                 "with disk driver %s"),
976 977
                               virStorageFileFormatTypeToString(format),
                               driver);
978 979
                return -1;
            }
J
Jim Fehlig 已提交
980
            x_disk->format = LIBXL_DISK_FORMAT_RAW;
981
            x_disk->backend = LIBXL_DISK_BACKEND_QDISK;
982 983 984
        } else if (STREQ(driver, "phy")) {
            if (format != VIR_STORAGE_FILE_NONE &&
                format != VIR_STORAGE_FILE_RAW) {
985 986 987
                virReportError(VIR_ERR_INTERNAL_ERROR,
                               _("libxenlight does not support disk format %s "
                                 "with disk driver %s"),
988 989
                               virStorageFileFormatTypeToString(format),
                               driver);
990 991
                return -1;
            }
J
Jim Fehlig 已提交
992 993
            x_disk->format = LIBXL_DISK_FORMAT_RAW;
            x_disk->backend = LIBXL_DISK_BACKEND_PHY;
994
        } else {
995 996
            virReportError(VIR_ERR_INTERNAL_ERROR,
                           _("libxenlight does not support disk driver %s"),
997
                           driver);
998 999 1000
            return -1;
        }
    } else {
J
Jim Fehlig 已提交
1001 1002 1003 1004 1005
        /*
         * If driverName is not specified, default to raw as per
         * xl-disk-configuration.txt in the xen documentation and let
         * libxl pick a suitable backend.
         */
J
Jim Fehlig 已提交
1006
        x_disk->format = LIBXL_DISK_FORMAT_RAW;
J
Jim Fehlig 已提交
1007
        x_disk->backend = LIBXL_DISK_BACKEND_UNKNOWN;
1008 1009
    }

J
Jim Fehlig 已提交
1010 1011
    /* XXX is this right? */
    x_disk->removable = 1;
1012
    x_disk->readwrite = !l_disk->src->readonly;
1013
    x_disk->is_cdrom = l_disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM ? 1 : 0;
1014 1015
    if (libxlDiskSetDiscard(x_disk, l_disk->discard) < 0)
        return -1;
1016 1017 1018
    /* An empty CDROM must have the empty format, otherwise libxl fails. */
    if (x_disk->is_cdrom && !x_disk->pdev_path)
        x_disk->format = LIBXL_DISK_FORMAT_EMPTY;
1019
    if (l_disk->transient) {
1020 1021
        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                       _("libxenlight does not support transient disks"));
1022 1023
        return -1;
    }
1024

1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036
    if (l_disk->domain_name) {
#ifdef LIBXL_HAVE_DEVICE_BACKEND_DOMNAME
        if (VIR_STRDUP(x_disk->backend_domname, l_disk->domain_name) < 0)
            return -1;
#else
        virReportError(VIR_ERR_XML_DETAIL, "%s",
                _("this version of libxenlight does not "
                  "support backend domain name"));
        return -1;
#endif
    }

1037 1038 1039
    return 0;
}

J
Jim Fehlig 已提交
1040 1041 1042 1043 1044 1045
static int
libxlMakeDiskList(virDomainDefPtr def, libxl_domain_config *d_config)
{
    virDomainDiskDefPtr *l_disks = def->disks;
    int ndisks = def->ndisks;
    libxl_device_disk *x_disks;
1046
    size_t i;
J
Jim Fehlig 已提交
1047

1048
    if (VIR_ALLOC_N(x_disks, ndisks) < 0)
J
Jim Fehlig 已提交
1049 1050 1051
        return -1;

    for (i = 0; i < ndisks; i++) {
J
Jim Fehlig 已提交
1052
        if (libxlMakeDisk(l_disks[i], &x_disks[i]) < 0)
J
Jim Fehlig 已提交
1053 1054 1055 1056 1057 1058 1059 1060
            goto error;
    }

    d_config->disks = x_disks;
    d_config->num_disks = ndisks;

    return 0;

1061
 error:
J
Jim Fehlig 已提交
1062
    for (i = 0; i < ndisks; i++)
J
Jim Fehlig 已提交
1063
        libxl_device_disk_dispose(&x_disks[i]);
J
Jim Fehlig 已提交
1064 1065 1066 1067
    VIR_FREE(x_disks);
    return -1;
}

1068
int
1069 1070 1071
libxlMakeNic(virDomainDefPtr def,
             virDomainNetDefPtr l_nic,
             libxl_device_nic *x_nic)
1072
{
1073
    bool ioemu_nic = STREQ(def->os.type, "hvm");
1074
    virDomainNetType actual_type = virDomainNetGetActualType(l_nic);
1075

J
Jim Fehlig 已提交
1076 1077 1078 1079
    /* TODO: Where is mtu stored?
     *
     * x_nics[i].mtu = 1492;
     */
1080

1081 1082 1083 1084 1085 1086 1087 1088
    if (l_nic->script && !(actual_type == VIR_DOMAIN_NET_TYPE_BRIDGE ||
                           actual_type == VIR_DOMAIN_NET_TYPE_ETHERNET)) {
        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                       _("specifying a script is only supported with "
                         "interface types bridge and ethernet"));
        return -1;
    }

1089 1090
    libxl_device_nic_init(x_nic);

1091
    virMacAddrGetRaw(&l_nic->mac, x_nic->mac);
1092

1093
    if (ioemu_nic)
J
Jim Fehlig 已提交
1094
        x_nic->nictype = LIBXL_NIC_TYPE_VIF_IOEMU;
1095
    else
J
Jim Fehlig 已提交
1096
        x_nic->nictype = LIBXL_NIC_TYPE_VIF;
1097 1098 1099 1100 1101 1102

    if (l_nic->model) {
        if (VIR_STRDUP(x_nic->model, l_nic->model) < 0)
            return -1;
        if (STREQ(l_nic->model, "netfront"))
            x_nic->nictype = LIBXL_NIC_TYPE_VIF;
1103 1104
    }

1105
    if (VIR_STRDUP(x_nic->ifname, l_nic->ifname) < 0)
1106 1107
        return -1;

1108
    switch (actual_type) {
1109
        case VIR_DOMAIN_NET_TYPE_BRIDGE:
1110 1111
            if (VIR_STRDUP(x_nic->bridge,
                           virDomainNetGetActualBridgeName(l_nic)) < 0)
1112 1113 1114 1115 1116
                return -1;
            /* fallthrough */
        case VIR_DOMAIN_NET_TYPE_ETHERNET:
            if (VIR_STRDUP(x_nic->script, l_nic->script) < 0)
                return -1;
1117 1118 1119 1120 1121
            if (l_nic->nips > 0) {
                x_nic->ip = virSocketAddrFormat(&l_nic->ips[0]->address);
                if (!x_nic->ip)
                    return -1;
            }
1122
            break;
1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138
        case VIR_DOMAIN_NET_TYPE_NETWORK:
        {
            bool fail = false;
            char *brname = NULL;
            virNetworkPtr network;
            virConnectPtr conn;

            if (!(conn = virConnectOpen("xen:///system")))
                return -1;

            if (!(network =
                  virNetworkLookupByName(conn, l_nic->data.network.name))) {
                virObjectUnref(conn);
                return -1;
            }

1139 1140 1141 1142 1143 1144
            if (l_nic->nips > 0) {
                x_nic->ip = virSocketAddrFormat(&l_nic->ips[0]->address);
                if (!x_nic->ip)
                    return -1;
            }

1145 1146 1147 1148 1149 1150 1151 1152 1153
            if ((brname = virNetworkGetBridgeName(network))) {
                if (VIR_STRDUP(x_nic->bridge, brname) < 0)
                    fail = true;
            } else {
                fail = true;
            }

            VIR_FREE(brname);

1154
            virObjectUnref(network);
1155 1156 1157 1158 1159
            virObjectUnref(conn);
            if (fail)
                return -1;
            break;
        }
M
Michele Paolino 已提交
1160
        case VIR_DOMAIN_NET_TYPE_VHOSTUSER:
1161 1162 1163 1164 1165 1166 1167 1168
        case VIR_DOMAIN_NET_TYPE_USER:
        case VIR_DOMAIN_NET_TYPE_SERVER:
        case VIR_DOMAIN_NET_TYPE_CLIENT:
        case VIR_DOMAIN_NET_TYPE_MCAST:
        case VIR_DOMAIN_NET_TYPE_INTERNAL:
        case VIR_DOMAIN_NET_TYPE_DIRECT:
        case VIR_DOMAIN_NET_TYPE_HOSTDEV:
        case VIR_DOMAIN_NET_TYPE_LAST:
1169 1170
            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                    _("unsupported interface type %s"),
1171
                    virDomainNetTypeToString(l_nic->type));
1172
            return -1;
1173 1174
    }

1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186
    if (l_nic->domain_name) {
#ifdef LIBXL_HAVE_DEVICE_BACKEND_DOMNAME
        if (VIR_STRDUP(x_nic->backend_domname, l_nic->domain_name) < 0)
            return -1;
#else
        virReportError(VIR_ERR_XML_DETAIL, "%s",
                _("this version of libxenlight does not "
                  "support backend domain name"));
        return -1;
#endif
    }

1187 1188 1189
    return 0;
}

J
Jim Fehlig 已提交
1190 1191 1192 1193
static int
libxlMakeNicList(virDomainDefPtr def,  libxl_domain_config *d_config)
{
    virDomainNetDefPtr *l_nics = def->nets;
1194
    size_t nnics = def->nnets;
J
Jim Fehlig 已提交
1195
    libxl_device_nic *x_nics;
1196
    size_t i, nvnics = 0;
J
Jim Fehlig 已提交
1197

1198
    if (VIR_ALLOC_N(x_nics, nnics) < 0)
J
Jim Fehlig 已提交
1199 1200 1201
        return -1;

    for (i = 0; i < nnics; i++) {
1202 1203 1204 1205
        if (l_nics[i]->type == VIR_DOMAIN_NET_TYPE_HOSTDEV)
            continue;

        if (libxlMakeNic(def, l_nics[i], &x_nics[nvnics]))
J
Jim Fehlig 已提交
1206
            goto error;
1207 1208 1209 1210 1211
        /*
         * The devid (at least right now) will not get initialized by
         * libxl in the setup case but is required for starting the
         * device-model.
         */
1212 1213 1214 1215
        if (x_nics[nvnics].devid < 0)
            x_nics[nvnics].devid = nvnics;

        nvnics++;
J
Jim Fehlig 已提交
1216 1217
    }

1218
    VIR_SHRINK_N(x_nics, nnics, nnics - nvnics);
J
Jim Fehlig 已提交
1219 1220
    d_config->nics = x_nics;
    d_config->num_nics = nnics;
J
Jim Fehlig 已提交
1221 1222 1223

    return 0;

1224
 error:
J
Jim Fehlig 已提交
1225
    for (i = 0; i < nnics; i++)
J
Jim Fehlig 已提交
1226
        libxl_device_nic_dispose(&x_nics[i]);
J
Jim Fehlig 已提交
1227 1228 1229 1230
    VIR_FREE(x_nics);
    return -1;
}

1231
int
1232
libxlMakeVfb(virPortAllocatorPtr graphicsports,
J
Jim Fehlig 已提交
1233 1234
             virDomainGraphicsDefPtr l_vfb,
             libxl_device_vfb *x_vfb)
1235
{
1236
    unsigned short port;
1237
    const char *listenAddr;
1238

1239 1240
    libxl_device_vfb_init(x_vfb);

1241 1242
    switch (l_vfb->type) {
        case VIR_DOMAIN_GRAPHICS_TYPE_SDL:
J
Jim Fehlig 已提交
1243
            libxl_defbool_set(&x_vfb->sdl.enable, 1);
1244
            if (VIR_STRDUP(x_vfb->sdl.display, l_vfb->data.sdl.display) < 0)
1245
                return -1;
1246
            if (VIR_STRDUP(x_vfb->sdl.xauthority, l_vfb->data.sdl.xauth) < 0)
1247 1248 1249
                return -1;
            break;
        case  VIR_DOMAIN_GRAPHICS_TYPE_VNC:
J
Jim Fehlig 已提交
1250
            libxl_defbool_set(&x_vfb->vnc.enable, 1);
1251
            /* driver handles selection of free port */
J
Jim Fehlig 已提交
1252
            libxl_defbool_set(&x_vfb->vnc.findunused, 0);
1253
            if (l_vfb->data.vnc.autoport) {
1254

1255
                if (virPortAllocatorAcquire(graphicsports, &port) < 0)
1256
                    return -1;
1257 1258
                l_vfb->data.vnc.port = port;
            }
J
Jim Fehlig 已提交
1259
            x_vfb->vnc.display = l_vfb->data.vnc.port - LIBXL_VNC_PORT_MIN;
1260

1261 1262
            listenAddr = virDomainGraphicsListenGetAddress(l_vfb, 0);
            if (listenAddr) {
1263
                /* libxl_device_vfb_init() does VIR_STRDUP("127.0.0.1") */
J
Jim Fehlig 已提交
1264
                VIR_FREE(x_vfb->vnc.listen);
1265
                if (VIR_STRDUP(x_vfb->vnc.listen, listenAddr) < 0)
1266 1267
                    return -1;
            }
1268
            if (VIR_STRDUP(x_vfb->keymap, l_vfb->data.vnc.keymap) < 0)
1269 1270 1271
                return -1;
            break;
    }
J
Jim Fehlig 已提交
1272

1273 1274 1275
    return 0;
}

J
Jim Fehlig 已提交
1276
static int
1277
libxlMakeVfbList(virPortAllocatorPtr graphicsports,
J
Jim Fehlig 已提交
1278 1279
                 virDomainDefPtr def,
                 libxl_domain_config *d_config)
J
Jim Fehlig 已提交
1280 1281 1282 1283 1284
{
    virDomainGraphicsDefPtr *l_vfbs = def->graphics;
    int nvfbs = def->ngraphics;
    libxl_device_vfb *x_vfbs;
    libxl_device_vkb *x_vkbs;
1285
    size_t i;
J
Jim Fehlig 已提交
1286 1287 1288 1289

    if (nvfbs == 0)
        return 0;

1290
    if (VIR_ALLOC_N(x_vfbs, nvfbs) < 0)
J
Jim Fehlig 已提交
1291 1292 1293 1294 1295 1296 1297
        return -1;
    if (VIR_ALLOC_N(x_vkbs, nvfbs) < 0) {
        VIR_FREE(x_vfbs);
        return -1;
    }

    for (i = 0; i < nvfbs; i++) {
J
Jim Fehlig 已提交
1298
        libxl_device_vkb_init(&x_vkbs[i]);
J
Jim Fehlig 已提交
1299

1300
        if (libxlMakeVfb(graphicsports, l_vfbs[i], &x_vfbs[i]) < 0)
1301
            goto error;
J
Jim Fehlig 已提交
1302 1303 1304 1305 1306 1307
    }

    d_config->vfbs = x_vfbs;
    d_config->vkbs = x_vkbs;
    d_config->num_vfbs = d_config->num_vkbs = nvfbs;

1308 1309 1310 1311 1312 1313 1314 1315
    /*
     * VNC or SDL info must also be set in libxl_domain_build_info
     * for HVM domains.  Use the first vfb device.
     */
    if (STREQ(def->os.type, "hvm")) {
        libxl_domain_build_info *b_info = &d_config->b_info;
        libxl_device_vfb vfb = d_config->vfbs[0];

1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333
        if (libxl_defbool_val(vfb.vnc.enable)) {
            libxl_defbool_set(&b_info->u.hvm.vnc.enable, true);
            if (VIR_STRDUP(b_info->u.hvm.vnc.listen, vfb.vnc.listen) < 0)
                goto error;
            if (VIR_STRDUP(b_info->u.hvm.vnc.passwd, vfb.vnc.passwd) < 0)
                goto error;
            b_info->u.hvm.vnc.display = vfb.vnc.display;
            libxl_defbool_set(&b_info->u.hvm.vnc.findunused,
                              libxl_defbool_val(vfb.vnc.findunused));
        } else if (libxl_defbool_val(vfb.sdl.enable)) {
            libxl_defbool_set(&b_info->u.hvm.sdl.enable, true);
            libxl_defbool_set(&b_info->u.hvm.sdl.opengl,
                              libxl_defbool_val(vfb.sdl.opengl));
            if (VIR_STRDUP(b_info->u.hvm.sdl.display, vfb.sdl.display) < 0)
                goto error;
            if (VIR_STRDUP(b_info->u.hvm.sdl.xauthority, vfb.sdl.xauthority) < 0)
                goto error;
        }
1334 1335 1336

        if (VIR_STRDUP(b_info->u.hvm.keymap, vfb.keymap) < 0)
            goto error;
1337 1338
    }

J
Jim Fehlig 已提交
1339 1340
    return 0;

1341
 error:
J
Jim Fehlig 已提交
1342
    for (i = 0; i < nvfbs; i++) {
J
Jim Fehlig 已提交
1343 1344
        libxl_device_vfb_dispose(&x_vfbs[i]);
        libxl_device_vkb_dispose(&x_vkbs[i]);
J
Jim Fehlig 已提交
1345 1346 1347 1348 1349 1350
    }
    VIR_FREE(x_vfbs);
    VIR_FREE(x_vkbs);
    return -1;
}

J
Jim Fehlig 已提交
1351 1352
static int
libxlGetAutoballoonConf(libxlDriverConfigPtr cfg, bool *autoballoon)
1353 1354
{
    regex_t regex;
J
Jim Fehlig 已提交
1355 1356 1357 1358 1359 1360 1361 1362 1363 1364
    int res;

    if ((res = regcomp(&regex,
                      "(^| )dom0_mem=((|min:|max:)[0-9]+[bBkKmMgG]?,?)+($| )",
                       REG_NOSUB | REG_EXTENDED)) != 0) {
        char error[100];
        regerror(res, &regex, error, sizeof(error));
        virReportError(VIR_ERR_INTERNAL_ERROR,
                       _("Failed to compile regex %s"),
                       error);
1365

J
Jim Fehlig 已提交
1366 1367
        return -1;
    }
1368

J
Jim Fehlig 已提交
1369
    res = regexec(&regex, cfg->verInfo->commandline, 0, NULL, 0);
1370
    regfree(&regex);
J
Jim Fehlig 已提交
1371 1372
    *autoballoon = res == REG_NOMATCH;
    return 0;
1373 1374
}

1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400
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;
1401 1402
    if (VIR_STRDUP(cfg->autoDumpDir, LIBXL_DUMP_DIR) < 0)
        goto error;
1403 1404 1405 1406

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

1407 1408 1409 1410 1411 1412 1413 1414
    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;
    }

1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451
    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 */
J
Jim Fehlig 已提交
1452 1453
    if (libxlGetAutoballoonConf(cfg, &cfg->autoballoon) < 0)
        goto error;
1454 1455 1456

    return cfg;

1457
 error:
1458 1459 1460 1461 1462 1463 1464 1465
    VIR_FREE(log_file);
    virObjectUnref(cfg);
    return NULL;
}

libxlDriverConfigPtr
libxlDriverConfigGet(libxlDriverPrivatePtr driver)
{
1466 1467 1468 1469 1470 1471
    libxlDriverConfigPtr cfg;

    libxlDriverLock(driver);
    cfg = virObjectRef(driver->config);
    libxlDriverUnlock(driver);
    return cfg;
1472 1473
}

1474
int
1475
libxlMakePCI(virDomainHostdevDefPtr hostdev, libxl_device_pci *pcidev)
1476
{
1477
    virDomainHostdevSubsysPCIPtr pcisrc = &hostdev->source.subsys.u.pci;
1478 1479 1480 1481 1482
    if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
        return -1;
    if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
        return -1;

1483 1484 1485 1486
    pcidev->domain = pcisrc->addr.domain;
    pcidev->bus = pcisrc->addr.bus;
    pcidev->dev = pcisrc->addr.slot;
    pcidev->func = pcisrc->addr.function;
1487 1488 1489 1490 1491

    return 0;
}

static int
1492
libxlMakePCIList(virDomainDefPtr def, libxl_domain_config *d_config)
1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513
{
    virDomainHostdevDefPtr *l_hostdevs = def->hostdevs;
    size_t nhostdevs = def->nhostdevs;
    size_t npcidevs = 0;
    libxl_device_pci *x_pcidevs;
    size_t i, j;

    if (nhostdevs == 0)
        return 0;

    if (VIR_ALLOC_N(x_pcidevs, nhostdevs) < 0)
        return -1;

    for (i = 0, j = 0; i < nhostdevs; i++) {
        if (l_hostdevs[i]->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
            continue;
        if (l_hostdevs[i]->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
            continue;

        libxl_device_pci_init(&x_pcidevs[j]);

1514
        if (libxlMakePCI(l_hostdevs[i], &x_pcidevs[j]) < 0)
1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526
            goto error;

        npcidevs++;
        j++;
    }

    VIR_SHRINK_N(x_pcidevs, nhostdevs, nhostdevs - npcidevs);
    d_config->pcidevs = x_pcidevs;
    d_config->num_pcidevs = npcidevs;

    return 0;

1527
 error:
1528 1529 1530 1531 1532 1533 1534
    for (i = 0; i < npcidevs; i++)
        libxl_device_pci_dispose(&x_pcidevs[i]);

    VIR_FREE(x_pcidevs);
    return -1;
}

1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600
static int
libxlMakeVideo(virDomainDefPtr def, libxl_domain_config *d_config)

{
    libxl_domain_build_info *b_info = &d_config->b_info;
    int dm_type = libxlDomainGetEmulatorType(def);

    if (d_config->c_info.type != LIBXL_DOMAIN_TYPE_HVM)
        return 0;

    /*
     * Take the first defined video device (graphics card) to display
     * on the first graphics device (display).
     */
    if (def->nvideos) {
        switch (def->videos[0]->type) {
        case VIR_DOMAIN_VIDEO_TYPE_VGA:
        case VIR_DOMAIN_VIDEO_TYPE_XEN:
            b_info->u.hvm.vga.kind = LIBXL_VGA_INTERFACE_TYPE_STD;
            if (dm_type == LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN) {
                if (def->videos[0]->vram < 16 * 1024) {
                    virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                                   _("videoram must be at least 16MB for VGA"));
                    return -1;
                }
            } else {
                if (def->videos[0]->vram < 8 * 1024) {
                    virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                                   _("videoram must be at least 8MB for VGA"));
                    return -1;
                }
            }
            break;

        case VIR_DOMAIN_VIDEO_TYPE_CIRRUS:
            b_info->u.hvm.vga.kind = LIBXL_VGA_INTERFACE_TYPE_CIRRUS;
            if (dm_type == LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN) {
                if (def->videos[0]->vram < 8 * 1024) {
                    virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                                   _("videoram must be at least 8MB for CIRRUS"));
                    return -1;
                }
            } else {
                if (def->videos[0]->vram < 4 * 1024) {
                    virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                                   _("videoram must be at least 4MB for CIRRUS"));
                    return -1;
                }
            }
            break;

        default:
            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                           _("video type %s is not supported by libxl"),
                           virDomainVideoTypeToString(def->videos[0]->type));
            return -1;
        }
        /* vram validated for each video type, now set it */
        b_info->video_memkb = def->videos[0]->vram;
    } else {
        libxl_defbool_set(&b_info->u.hvm.nographic, 1);
    }

    return 0;
}

1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631
int
libxlDriverNodeGetInfo(libxlDriverPrivatePtr driver, virNodeInfoPtr info)
{
    libxl_physinfo phy_info;
    virArch hostarch = virArchFromHost();
    libxlDriverConfigPtr cfg = libxlDriverConfigGet(driver);
    int ret = -1;

    if (libxl_get_physinfo(cfg->ctx, &phy_info)) {
        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                       _("libxl_get_physinfo_info failed"));
        goto cleanup;
    }

    if (virStrcpyStatic(info->model, virArchToString(hostarch)) == NULL) {
        virReportError(VIR_ERR_INTERNAL_ERROR,
                       _("machine type %s too big for destination"),
                       virArchToString(hostarch));
        goto cleanup;
    }

    info->memory = phy_info.total_pages * (cfg->verInfo->pagesize / 1024);
    info->cpus = phy_info.nr_cpus;
    info->nodes = phy_info.nr_nodes;
    info->cores = phy_info.cores_per_socket;
    info->threads = phy_info.threads_per_core;
    info->sockets = 1;
    info->mhz = phy_info.cpu_khz / 1000;

    ret = 0;

1632
 cleanup:
1633 1634 1635 1636
    virObjectUnref(cfg);
    return ret;
}

J
Jim Fehlig 已提交
1637 1638 1639
virCapsPtr
libxlMakeCapabilities(libxl_ctx *ctx)
{
J
Jim Fehlig 已提交
1640
    virCapsPtr caps;
J
Jim Fehlig 已提交
1641

1642
#ifdef LIBXL_HAVE_NO_SUSPEND_RESUME
1643
    if ((caps = virCapabilitiesNew(virArchFromHost(), false, false)) == NULL)
1644
#else
1645
    if ((caps = virCapabilitiesNew(virArchFromHost(), true, true)) == NULL)
1646
#endif
1647
        return NULL;
J
Jim Fehlig 已提交
1648

J
Jim Fehlig 已提交
1649 1650
    if (libxlCapsInitHost(ctx, caps) < 0)
        goto error;
J
Jim Fehlig 已提交
1651

1652 1653 1654
    if (libxlCapsInitNuma(ctx, caps) < 0)
        goto error;

J
Jim Fehlig 已提交
1655 1656 1657 1658
    if (libxlCapsInitGuests(ctx, caps) < 0)
        goto error;

    return caps;
J
Jim Fehlig 已提交
1659

1660
 error:
J
Jim Fehlig 已提交
1661 1662
    virObjectUnref(caps);
    return NULL;
J
Jim Fehlig 已提交
1663 1664 1665
}

int
1666
libxlBuildDomainConfig(virPortAllocatorPtr graphicsports,
1667 1668 1669
                       virDomainDefPtr def,
                       libxl_ctx *ctx,
                       libxl_domain_config *d_config)
J
Jim Fehlig 已提交
1670
{
1671
    libxl_domain_config_init(d_config);
J
Jim Fehlig 已提交
1672

1673
    if (libxlMakeDomCreateInfo(ctx, def, &d_config->c_info) < 0)
J
Jim Fehlig 已提交
1674 1675
        return -1;

1676
    if (libxlMakeDomBuildInfo(def, ctx, d_config) < 0)
1677
        return -1;
J
Jim Fehlig 已提交
1678

1679
    if (libxlMakeDiskList(def, d_config) < 0)
1680
        return -1;
J
Jim Fehlig 已提交
1681

1682
    if (libxlMakeNicList(def, d_config) < 0)
1683
        return -1;
J
Jim Fehlig 已提交
1684

1685
    if (libxlMakeVfbList(graphicsports, def, d_config) < 0)
1686
        return -1;
J
Jim Fehlig 已提交
1687

1688
    if (libxlMakePCIList(def, d_config) < 0)
1689 1690
        return -1;

1691 1692 1693 1694 1695 1696 1697 1698
    /*
     * Now that any potential VFBs are defined, update the build info with
     * the data of the primary display. Some day libxl might implicitely do
     * so but as it does not right now, better be explicit.
     */
    if (libxlMakeVideo(def, d_config) < 0)
        return -1;

1699 1700 1701
    d_config->on_reboot = libxlActionFromVirLifecycle(def->onReboot);
    d_config->on_poweroff = libxlActionFromVirLifecycle(def->onPoweroff);
    d_config->on_crash = libxlActionFromVirLifecycleCrash(def->onCrash);
J
Jim Fehlig 已提交
1702 1703 1704

    return 0;
}
1705 1706 1707 1708 1709 1710 1711 1712

virDomainXMLOptionPtr
libxlCreateXMLConf(void)
{
    return virDomainXMLOptionNew(&libxlDomainDefParserConfig,
                                 &libxlDomainXMLPrivateDataCallbacks,
                                 NULL);
}