xen/tools/libxl/xl_cmdimpl.c

/*
 * Copyright (C) 2009      Citrix Ltd.
 * Author Stefano Stabellini <stefano.stabellini@eu.citrix.com>
 * Author Vincent Hanquez <vincent.hanquez@eu.citrix.com>
 *
 * This program 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; version 2.1 only. with the special
 * exception on linking described in file LICENSE.
 *
 * This program 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.
 */

#include "libxl_osdeps.h"

#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <time.h>
#include <getopt.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/socket.h>
#include <sys/select.h>
#include <arpa/inet.h>
#include <sys/utsname.h> /* for utsname in xl info */
#include <xenctrl.h>
#include <ctype.h>
#include <inttypes.h>

#include "libxl.h"
#include "libxl_utils.h"
#include "libxlutil.h"
#include "xl.h"

#define CHK_ERRNO( call ) ({                                            \
        int chk_errno = (call);                                         \
        if (chk_errno < 0) {                                                \
            fprintf(stderr,"xl: fatal error: %s:%d: %s: %s\n",          \
                    __FILE__,__LINE__, strerror(chk_errno), #call);     \
            exit(-ERROR_FAIL);                                          \
        }                                                               \
    })

#define MUST( call ) ({                                                 \
        int must_rc = (call);                                           \
        if (must_rc < 0) {                                                  \
            fprintf(stderr,"xl: fatal error: %s:%d, rc=%d: %s\n",       \
                    __FILE__,__LINE__, must_rc, #call);                 \
            exit(-must_rc);                                             \
        }                                                               \
    })


int logfile = 2;

/* every libxl action in xl uses this same libxl context */
libxl_ctx ctx;

/* when we operate on a domain, it is this one: */
static uint32_t domid;
static const char *common_domname;
static int fd_lock = -1;


static const char savefileheader_magic[32]=
    "Xen saved domain, xl format\n \0 \r";

static const char migrate_receiver_banner[]=
    "xl migration receiver ready, send binary domain data.\n";
static const char migrate_receiver_ready[]=
    "domain received, ready to unpause";
static const char migrate_permission_to_go[]=
    "domain is yours, you are cleared to unpause";
static const char migrate_report[]=
    "my copy unpause results are as follows";
  /* followed by one byte:
   *     0: everything went well, domain is running
   *            next thing is we all exit
   * non-0: things went badly
   *            next thing should be a migrate_permission_to_go
   *            from target to source
   */

struct save_file_header {
    char magic[32]; /* savefileheader_magic */
    /* All uint32_ts are in domain's byte order. */
    uint32_t byteorder; /* SAVEFILE_BYTEORDER_VALUE */
    uint32_t mandatory_flags; /* unknown flags => reject restore */
    uint32_t optional_flags; /* unknown flags => reject restore */
    uint32_t optional_data_len; /* skip, or skip tail, if not understood */
};


enum action_on_shutdown {
    ACTION_DESTROY,

    ACTION_RESTART,
    ACTION_RESTART_RENAME,

    ACTION_PRESERVE,

    ACTION_COREDUMP_DESTROY,
    ACTION_COREDUMP_RESTART,
};

static char *action_on_shutdown_names[] = {
    [ACTION_DESTROY] = "destroy",

    [ACTION_RESTART] = "restart",
    [ACTION_RESTART_RENAME] = "rename-restart",

    [ACTION_PRESERVE] = "preserve",

    [ACTION_COREDUMP_DESTROY] = "coredump-destroy",
    [ACTION_COREDUMP_RESTART] = "coredump-restart",
};

struct domain_config {
    libxl_domain_create_info c_info;
    libxl_domain_build_info b_info;

    int num_disks, num_vifs, num_vif2s, num_pcidevs, num_vfbs, num_vkbs;

    libxl_device_disk *disks;
    libxl_device_nic *vifs;
    libxl_device_net2 *vif2s;
    libxl_device_pci *pcidevs;
    libxl_device_vfb *vfbs;
    libxl_device_vkb *vkbs;

    enum action_on_shutdown on_poweroff;
    enum action_on_shutdown on_reboot;
    enum action_on_shutdown on_watchdog;
    enum action_on_shutdown on_crash;
};

static void free_domain_config(struct domain_config *d_config)
{
    int i;

    for (i=0; i<d_config->num_disks; i++)
        libxl_device_disk_destroy(&d_config->disks[i]);
    free(d_config->disks);

    for (i=0; i<d_config->num_vifs; i++)
        libxl_device_nic_destroy(&d_config->vifs[i]);
    free(d_config->vifs);

    for (i=0; i<d_config->num_vif2s; i++)
        libxl_device_net2_destroy(&d_config->vif2s[i]);
    free(d_config->vif2s);

    for (i=0; i<d_config->num_pcidevs; i++)
        libxl_device_pci_destroy(&d_config->pcidevs[i]);
    free(d_config->pcidevs);

    for (i=0; i<d_config->num_vfbs; i++)
        libxl_device_vfb_destroy(&d_config->vfbs[i]);
    free(d_config->vfbs);

    for (i=0; i<d_config->num_vkbs; i++)
        libxl_device_vkb_destroy(&d_config->vkbs[i]);
    free(d_config->vkbs);

    libxl_domain_create_info_destroy(&d_config->c_info);
    libxl_domain_build_info_destroy(&d_config->b_info);
}

/* Optional data, in order:
 *   4 bytes uint32_t  config file size
 *   n bytes           config file in Unix text file format
 */

#define SAVEFILE_BYTEORDER_VALUE ((uint32_t)0x01020304UL)

static int qualifier_to_id(const char *p, uint32_t *id_r)
{
    int i, alldigit;

    alldigit = 1;
    for (i = 0; p[i]; i++) {
        if (!isdigit((uint8_t)p[i])) {
            alldigit = 0;
            break;
        }
    }

    if (i > 0 && alldigit) {
        *id_r = strtoul(p, NULL, 10);
        return 0;
    } else {
        /* check here if it's a uuid and do proper conversion */
    }
    return 1;
}

static int domain_qualifier_to_domid(const char *p, uint32_t *domid_r,
                                     int *was_name_r)
{
    int was_name;

    was_name = qualifier_to_id(p, domid_r);
    if (was_name_r) *was_name_r = was_name;
    return was_name ? libxl_name_to_domid(&ctx, p, domid_r) : 0;
}

static int pool_qualifier_to_poolid(const char *p, uint32_t *poolid_r,
                                     int *was_name_r)
{
    int was_name;

    was_name = qualifier_to_id(p, poolid_r);
    if (was_name_r) *was_name_r = was_name;
    return was_name ? libxl_name_to_poolid(&ctx, p, poolid_r) : 0;
}

static void find_domain(const char *p)
{
    int rc, was_name;

    rc = domain_qualifier_to_domid(p, &domid, &was_name);
    if (rc) {
        fprintf(stderr, "%s is an invalid domain identifier (rc=%d)\n", p, rc);
        exit(2);
    }
    common_domname = was_name ? p : libxl_domid_to_name(&ctx, domid);
}

static int acquire_lock(void)
{
    int rc;
    struct flock fl;

    /* lock already acquired */
    if (fd_lock >= 0)
        return ERROR_INVAL;

    fl.l_type = F_WRLCK;
    fl.l_whence = SEEK_SET;
    fl.l_start = 0;
    fl.l_len = 0;
    fd_lock = open(lockfile, O_WRONLY|O_CREAT, S_IWUSR);
    if (fd_lock < 0) {
        fprintf(stderr, "cannot open the lockfile %s errno=%d\n", lockfile, errno);
        return ERROR_FAIL;
    }
get_lock:
    rc = fcntl(fd_lock, F_SETLKW, &fl);
    if (rc < 0 && errno == EINTR)
        goto get_lock;
    if (rc < 0) {
        fprintf(stderr, "cannot acquire lock %s errno=%d\n", lockfile, errno);
        rc = ERROR_FAIL;
    } else
        rc = 0;
    return rc;
}

static int release_lock(void)
{
    int rc;
    struct flock fl;

    /* lock not acquired */
    if (fd_lock < 0)
        return ERROR_INVAL;

release_lock:
    fl.l_type = F_UNLCK;
    fl.l_whence = SEEK_SET;
    fl.l_start = 0;
    fl.l_len = 0;

    rc = fcntl(fd_lock, F_SETLKW, &fl);
    if (rc < 0 && errno == EINTR)
        goto release_lock;
    if (rc < 0) {
        fprintf(stderr, "cannot release lock %s, errno=%d\n", lockfile, errno);
        rc = ERROR_FAIL;
    } else
        rc = 0;
    close(fd_lock);
    fd_lock = -1;

    return rc;
}

#define LOG(_f, _a...)   dolog(__FILE__, __LINE__, __func__, _f "\n", ##_a)

static void dolog(const char *file, int line, const char *func, char *fmt, ...)
     __attribute__((format(printf,4,5)));

static void dolog(const char *file, int line, const char *func, char *fmt, ...)
{
    va_list ap;
    char *s;
    int rc;

    va_start(ap, fmt);
    rc = vasprintf(&s, fmt, ap);
    va_end(ap);
    if (rc >= 0)
        libxl_write_exactly(NULL, logfile, s, rc, NULL, NULL);
}

static void init_create_info(libxl_domain_create_info *c_info)
{
    memset(c_info, '\0', sizeof(*c_info));
    c_info->xsdata = NULL;
    c_info->platformdata = NULL;
    c_info->hap = 1;
    c_info->hvm = 1;
    c_info->oos = 1;
    c_info->ssidref = 0;
    c_info->poolid = 0;
}

static void init_build_info(libxl_domain_build_info *b_info, libxl_domain_create_info *c_info)
{
    memset(b_info, '\0', sizeof(*b_info));
    b_info->max_vcpus = 1;
    b_info->max_memkb = 32 * 1024;
    b_info->target_memkb = b_info->max_memkb;
    b_info->disable_migrate = 0;
    b_info->cpuid = NULL;
    if (c_info->hvm) {
        b_info->shadow_memkb = 0; /* Set later */
        b_info->video_memkb = 8 * 1024;
        b_info->kernel.path = strdup("hvmloader");
        b_info->hvm = 1;
        b_info->u.hvm.pae = 1;
        b_info->u.hvm.apic = 1;
        b_info->u.hvm.acpi = 1;
        b_info->u.hvm.nx = 1;
        b_info->u.hvm.viridian = 0;
        b_info->u.hvm.hpet = 1;
        b_info->u.hvm.vpt_align = 1;
        b_info->u.hvm.timer_mode = 1;
    } else {
        b_info->u.pv.slack_memkb = 8 * 1024;
    }
}

static void init_dm_info(libxl_device_model_info *dm_info,
        libxl_domain_create_info *c_info, libxl_domain_build_info *b_info)
{
    memset(dm_info, '\0', sizeof(*dm_info));

    libxl_uuid_generate(&dm_info->uuid);

    dm_info->dom_name = strdup(c_info->name);
    dm_info->device_model = strdup("qemu-dm");
    dm_info->videoram = b_info->video_memkb / 1024;
    dm_info->apic = b_info->u.hvm.apic;
    dm_info->vcpus = b_info->max_vcpus;
    dm_info->vcpu_avail = b_info->cur_vcpus;

    dm_info->stdvga = 0;
    dm_info->vnc = 1;
    dm_info->vnclisten = strdup("127.0.0.1");
    dm_info->vncdisplay = 0;
    dm_info->vncunused = 1;
    dm_info->keymap = NULL;
    dm_info->sdl = 0;
    dm_info->opengl = 0;
    dm_info->nographic = 0;
    dm_info->serial = NULL;
    dm_info->boot = strdup("cda");
    dm_info->usb = 0;
    dm_info->usbdevice = NULL;
    dm_info->xen_platform_pci = 1;
}

static void init_nic_info(libxl_device_nic *nic_info, int devnum)
{
    const uint8_t *r;
    libxl_uuid uuid;

    libxl_uuid_generate(&uuid);
    r = libxl_uuid_bytearray(&uuid);
    memset(nic_info, '\0', sizeof(*nic_info));

    nic_info->backend_domid = 0;
    nic_info->domid = 0;
    nic_info->devid = devnum;
    nic_info->mtu = 1492;
    nic_info->model = strdup("e1000");
    nic_info->mac[0] = 0x00;
    nic_info->mac[1] = 0x16;
    nic_info->mac[2] = 0x3e;
    nic_info->mac[3] = r[0] & 0x7f;
    nic_info->mac[4] = r[1];
    nic_info->mac[5] = r[2];
    nic_info->ifname = NULL;
    nic_info->bridge = strdup("xenbr0");
    CHK_ERRNO( asprintf(&nic_info->script, "%s/vif-bridge",
               libxl_xen_script_dir_path()) );
    nic_info->nictype = NICTYPE_IOEMU;
}

static void init_net2_info(libxl_device_net2 *net2_info, int devnum)
{
    const uint8_t *r;
    libxl_uuid uuid;

    libxl_uuid_generate(&uuid);
    r = libxl_uuid_bytearray(&uuid);
    memset(net2_info, '\0', sizeof(*net2_info));

    net2_info->devid = devnum;
    net2_info->front_mac[0] = 0x00;
    net2_info->front_mac[1] = 0x16;
    net2_info->front_mac[2] = 0x3e;;
    net2_info->front_mac[3] = 0x7f & r[0];
    net2_info->front_mac[4] = r[1];
    net2_info->front_mac[5] = r[2];
    net2_info->back_mac[0] = 0x00;
    net2_info->back_mac[1] = 0x16;
    net2_info->back_mac[2] = 0x3e;
    net2_info->back_mac[3] = 0x7f & r[3];
    net2_info->back_mac[4] = r[4];
    net2_info->back_mac[5] = r[5];
    net2_info->back_trusted = 1;
    net2_info->filter_mac = 1;
    net2_info->max_bypasses = 5;
    net2_info->bridge = "xenbr0";
}

static void init_vfb_info(libxl_device_vfb *vfb, int dev_num)
{
    memset(vfb, 0x00, sizeof(libxl_device_vfb));
    vfb->devid = dev_num;
    vfb->vnc = 1;
    vfb->vnclisten = "127.0.0.1";
    vfb->vncdisplay = 0;
    vfb->vncunused = 1;
    vfb->keymap = NULL;
    vfb->sdl = 0;
    vfb->opengl = 0;
}

static void init_vkb_info(libxl_device_vkb *vkb, int dev_num)
{
    memset(vkb, 0x00, sizeof(libxl_device_vkb));
    vkb->devid = dev_num;
}

static void init_console_info(libxl_device_console *console, int dev_num, libxl_domain_build_state *state)
{
    memset(console, 0x00, sizeof(libxl_device_console));
    console->devid = dev_num;
    console->consback = LIBXL_CONSBACK_XENCONSOLED;
    console->output = "pty";
    if (state)
        console->build_state = state;
}

static void printf_info(int domid,
                        struct domain_config *d_config,
                        libxl_device_model_info *dm_info)
{
    int i;
    libxl_dominfo info;

    libxl_domain_create_info *c_info = &d_config->c_info;
    libxl_domain_build_info *b_info = &d_config->b_info;

    printf("(domain\n\t(domid %d)\n", domid);
    printf("\t(domain_create_info)\n");
    printf("\t(hvm %d)\n", c_info->hvm);
    printf("\t(hap %d)\n", c_info->hap);
    printf("\t(oos %d)\n", c_info->oos);
    printf("\t(ssidref %d)\n", c_info->ssidref);
    printf("\t(name %s)\n", c_info->name);

    /* retrieve the UUID from dominfo, since it is probably generated
     * during parsing and thus does not match the real one
     */
    if (libxl_domain_info(&ctx, &info, domid) == 0) {
        printf("\t(uuid " LIBXL_UUID_FMT ")\n", LIBXL_UUID_BYTES(info.uuid));
    } else {
        printf("\t(uuid <unknown>)\n");
    }

    printf("\t(cpupool %s (%d))\n", c_info->poolname, c_info->poolid);
    if (c_info->xsdata)
        printf("\t(xsdata contains data)\n");
    else
        printf("\t(xsdata (null))\n");
    if (c_info->platformdata)
        printf("\t(platformdata contains data)\n");
    else
        printf("\t(platformdata (null))\n");


    printf("\t(domain_build_info)\n");
    printf("\t(max_vcpus %d)\n", b_info->max_vcpus);
    printf("\t(tsc_mode %d)\n", b_info->tsc_mode);
    printf("\t(max_memkb %d)\n", b_info->max_memkb);
    printf("\t(target_memkb %d)\n", b_info->target_memkb);
    printf("\t(nomigrate %d)\n", b_info->disable_migrate);

    if (!c_info->hvm && b_info->u.pv.bootloader) {
        printf("\t(bootloader %s)\n", b_info->u.pv.bootloader);
        if (b_info->u.pv.bootloader_args)
            printf("\t(bootloader_args %s)\n", b_info->u.pv.bootloader_args);
    }

    printf("\t(image\n");
    if (c_info->hvm) {
        printf("\t\t(hvm\n");
        printf("\t\t\t(loader %s)\n", b_info->kernel.path);
        printf("\t\t\t(video_memkb %d)\n", b_info->video_memkb);
        printf("\t\t\t(shadow_memkb %d)\n", b_info->shadow_memkb);
        printf("\t\t\t(pae %d)\n", b_info->u.hvm.pae);
        printf("\t\t\t(apic %d)\n", b_info->u.hvm.apic);
        printf("\t\t\t(acpi %d)\n", b_info->u.hvm.acpi);
        printf("\t\t\t(nx %d)\n", b_info->u.hvm.nx);
        printf("\t\t\t(viridian %d)\n", b_info->u.hvm.viridian);
        printf("\t\t\t(hpet %d)\n", b_info->u.hvm.hpet);
        printf("\t\t\t(vpt_align %d)\n", b_info->u.hvm.vpt_align);
        printf("\t\t\t(timer_mode %d)\n", b_info->u.hvm.timer_mode);

        printf("\t\t\t(device_model %s)\n", dm_info->device_model);
        printf("\t\t\t(videoram %d)\n", dm_info->videoram);
        printf("\t\t\t(stdvga %d)\n", dm_info->stdvga);
        printf("\t\t\t(vnc %d)\n", dm_info->vnc);
        printf("\t\t\t(vnclisten %s)\n", dm_info->vnclisten);
        printf("\t\t\t(vncdisplay %d)\n", dm_info->vncdisplay);
        printf("\t\t\t(vncunused %d)\n", dm_info->vncunused);
        printf("\t\t\t(keymap %s)\n", dm_info->keymap);
        printf("\t\t\t(sdl %d)\n", dm_info->sdl);
        printf("\t\t\t(opengl %d)\n", dm_info->opengl);
        printf("\t\t\t(nographic %d)\n", dm_info->nographic);
        printf("\t\t\t(serial %s)\n", dm_info->serial);
        printf("\t\t\t(boot %s)\n", dm_info->boot);
        printf("\t\t\t(usb %d)\n", dm_info->usb);
        printf("\t\t\t(usbdevice %s)\n", dm_info->usbdevice);
        printf("\t\t\t(apic %d)\n", dm_info->apic);
        printf("\t\t)\n");
    } else {
        printf("\t\t(linux %d)\n", b_info->hvm);
        printf("\t\t\t(kernel %s)\n", b_info->kernel.path);
        printf("\t\t\t(cmdline %s)\n", b_info->u.pv.cmdline);
        printf("\t\t\t(ramdisk %s)\n", b_info->u.pv.ramdisk.path);
        printf("\t\t)\n");
    }
    printf("\t)\n");

    for (i = 0; i < d_config->num_disks; i++) {
        printf("\t(device\n");
        printf("\t\t(tap\n");
        printf("\t\t\t(backend_domid %d)\n", d_config->disks[i].backend_domid);
        printf("\t\t\t(domid %d)\n", d_config->disks[i].domid);
        printf("\t\t\t(physpath %s)\n", d_config->disks[i].physpath);
        printf("\t\t\t(phystype %d)\n", d_config->disks[i].phystype);
        printf("\t\t\t(virtpath %s)\n", d_config->disks[i].virtpath);
        printf("\t\t\t(unpluggable %d)\n", d_config->disks[i].unpluggable);
        printf("\t\t\t(readwrite %d)\n", d_config->disks[i].readwrite);
        printf("\t\t\t(is_cdrom %d)\n", d_config->disks[i].is_cdrom);
        printf("\t\t)\n");
        printf("\t)\n");
    }

    for (i = 0; i < d_config->num_vifs; i++) {
        printf("\t(device\n");
        printf("\t\t(vif\n");
        printf("\t\t\t(backend_domid %d)\n", d_config->vifs[i].backend_domid);
        printf("\t\t\t(domid %d)\n", d_config->vifs[i].domid);
        printf("\t\t\t(devid %d)\n", d_config->vifs[i].devid);
        printf("\t\t\t(mtu %d)\n", d_config->vifs[i].mtu);
        printf("\t\t\t(model %s)\n", d_config->vifs[i].model);
        printf("\t\t\t(mac %02x%02x%02x%02x%02x%02x)\n",
               d_config->vifs[i].mac[0], d_config->vifs[i].mac[1],
               d_config->vifs[i].mac[2], d_config->vifs[i].mac[3],
               d_config->vifs[i].mac[4], d_config->vifs[i].mac[5]);
        printf("\t\t)\n");
        printf("\t)\n");
    }

    for (i = 0; i < d_config->num_pcidevs; i++) {
        printf("\t(device\n");
        printf("\t\t(pci\n");
        printf("\t\t\t(pci dev %04x:%02x:%02x.%01x@%02x)\n",
               d_config->pcidevs[i].domain, d_config->pcidevs[i].bus,
               d_config->pcidevs[i].dev, d_config->pcidevs[i].func,
               d_config->pcidevs[i].vdevfn);
        printf("\t\t\t(opts msitranslate %d power_mgmt %d)\n",
               d_config->pcidevs[i].msitranslate,
               d_config->pcidevs[i].power_mgmt);
        printf("\t\t)\n");
        printf("\t)\n");
    }

    for (i = 0; i < d_config->num_vfbs; i++) {
        printf("\t(device\n");
        printf("\t\t(vfb\n");
        printf("\t\t\t(backend_domid %d)\n", d_config->vfbs[i].backend_domid);
        printf("\t\t\t(domid %d)\n", d_config->vfbs[i].domid);
        printf("\t\t\t(devid %d)\n", d_config->vfbs[i].devid);
        printf("\t\t\t(vnc %d)\n", d_config->vfbs[i].vnc);
        printf("\t\t\t(vnclisten %s)\n", d_config->vfbs[i].vnclisten);
        printf("\t\t\t(vncdisplay %d)\n", d_config->vfbs[i].vncdisplay);
        printf("\t\t\t(vncunused %d)\n", d_config->vfbs[i].vncunused);
        printf("\t\t\t(keymap %s)\n", d_config->vfbs[i].keymap);
        printf("\t\t\t(sdl %d)\n", d_config->vfbs[i].sdl);
        printf("\t\t\t(opengl %d)\n", d_config->vfbs[i].opengl);
        printf("\t\t\t(display %s)\n", d_config->vfbs[i].display);
        printf("\t\t\t(xauthority %s)\n", d_config->vfbs[i].xauthority);
        printf("\t\t)\n");
        printf("\t)\n");
    }
       printf(")\n");
}

static int parse_action_on_shutdown(const char *buf, enum action_on_shutdown *a)
{
    int i;
    const char *n;

    for (i = 0; i < sizeof(action_on_shutdown_names) / sizeof(action_on_shutdown_names[0]); i++) {
        n = action_on_shutdown_names[i];

        if (strcmp(buf, n) == 0) {
            *a = i;
            return 1;
        }
    }
    return 0;
}

static void parse_config_data(const char *configfile_filename_report,
                              const char *configfile_data,
                              int configfile_len,
                              struct domain_config *d_config,
                              libxl_device_model_info *dm_info)
{
    const char *buf;
    long l;
    XLU_Config *config;
    XLU_ConfigList *vbds, *nics, *pcis, *cvfbs, *net2s;
    int pci_power_mgmt = 0;
    int pci_msitranslate = 1;
    int e;

    libxl_domain_create_info *c_info = &d_config->c_info;
    libxl_domain_build_info *b_info = &d_config->b_info;

    config= xlu_cfg_init(stderr, configfile_filename_report);
    if (!config) {
        fprintf(stderr, "Failed to allocate for configuration\n");
        exit(1);
    }

    e= xlu_cfg_readdata(config, configfile_data, configfile_len);
    if (e) {
        fprintf(stderr, "Failed to parse config file: %s\n", strerror(e));
        exit(1);
    }

    init_create_info(c_info);

    c_info->hvm = 0;
    if (!xlu_cfg_get_string (config, "builder", &buf) &&
        !strncmp(buf, "hvm", strlen(buf)))
        c_info->hvm = 1;

    if (!xlu_cfg_get_long (config, "hap", &l))
        c_info->hap = l;

    if (xlu_cfg_replace_string (config, "name", &c_info->name))
        c_info->name = strdup("test");

    if (!xlu_cfg_get_string (config, "uuid", &buf) ) {
        if ( libxl_uuid_from_string(&c_info->uuid, buf) ) {
            fprintf(stderr, "Failed to parse UUID: %s\n", buf);
            exit(1);
        }
    }else{
        libxl_uuid_generate(&c_info->uuid);
    }
 
    if (!xlu_cfg_get_long(config, "oos", &l))
        c_info->oos = l;

    if (!xlu_cfg_get_string (config, "pool", &buf)) {
        c_info->poolid = -1;
        pool_qualifier_to_poolid(buf, &c_info->poolid, NULL);
    }
    c_info->poolname = libxl_poolid_to_name(&ctx, c_info->poolid);
    if (!c_info->poolname) {
        fprintf(stderr, "Illegal pool specified\n");
        exit(1);
    }

    init_build_info(b_info, c_info);

    /* the following is the actual config parsing with overriding values in the structures */
    if (!xlu_cfg_get_long (config, "vcpus", &l)) {
        b_info->max_vcpus = l;
        b_info->cur_vcpus = (1 << l) - 1;
    }

    if (!xlu_cfg_get_long (config, "maxvcpus", &l))
        b_info->max_vcpus = l;

    if (!xlu_cfg_get_long (config, "memory", &l)) {
        b_info->max_memkb = l * 1024;
        b_info->target_memkb = b_info->max_memkb;
    }

    if (!xlu_cfg_get_long (config, "maxmem", &l))
        b_info->max_memkb = l * 1024;

    if (xlu_cfg_get_string (config, "on_poweroff", &buf))
        buf = "destroy";
    if (!parse_action_on_shutdown(buf, &d_config->on_poweroff)) {
        fprintf(stderr, "Unknown on_poweroff action \"%s\" specified\n", buf);
        exit(1);
    }

    if (xlu_cfg_get_string (config, "on_reboot", &buf))
        buf = "restart";
    if (!parse_action_on_shutdown(buf, &d_config->on_reboot)) {
        fprintf(stderr, "Unknown on_reboot action \"%s\" specified\n", buf);
        exit(1);
    }

    if (xlu_cfg_get_string (config, "on_watchdog", &buf))
        buf = "destroy";
    if (!parse_action_on_shutdown(buf, &d_config->on_watchdog)) {
        fprintf(stderr, "Unknown on_watchdog action \"%s\" specified\n", buf);
        exit(1);
    }


    if (xlu_cfg_get_string (config, "on_crash", &buf))
        buf = "destroy";
    if (!parse_action_on_shutdown(buf, &d_config->on_crash)) {
        fprintf(stderr, "Unknown on_crash action \"%s\" specified\n", buf);
        exit(1);
    }

    /* libxl_get_required_shadow_memory() must be called after final values
     * (default or specified) for vcpus and memory are set, because the
     * calculation depends on those values. */
    b_info->shadow_memkb = !xlu_cfg_get_long(config, "shadow_memory", &l)
        ? l * 1024
        : libxl_get_required_shadow_memory(b_info->max_memkb,
                                           b_info->max_vcpus);

    if (!xlu_cfg_get_long (config, "nomigrate", &l))
        b_info->disable_migrate = l;

    if (!xlu_cfg_get_long(config, "tsc_mode", &l))
        b_info->tsc_mode = l;

    if (!xlu_cfg_get_long (config, "videoram", &l))
        b_info->video_memkb = l * 1024;

    xlu_cfg_replace_string (config, "kernel", &b_info->kernel.path);

    if (c_info->hvm == 1) {
        if (!xlu_cfg_get_long (config, "pae", &l))
            b_info->u.hvm.pae = l;
        if (!xlu_cfg_get_long (config, "apic", &l))
            b_info->u.hvm.apic = l;
        if (!xlu_cfg_get_long (config, "acpi", &l))
            b_info->u.hvm.acpi = l;
        if (!xlu_cfg_get_long (config, "nx", &l))
            b_info->u.hvm.nx = l;
        if (!xlu_cfg_get_long (config, "viridian", &l))
            b_info->u.hvm.viridian = l;
        if (!xlu_cfg_get_long (config, "hpet", &l))
            b_info->u.hvm.hpet = l;
        if (!xlu_cfg_get_long (config, "vpt_align", &l))
            b_info->u.hvm.vpt_align = l;
        if (!xlu_cfg_get_long (config, "timer_mode", &l))
            b_info->u.hvm.timer_mode = l;
    } else {
        char *cmdline = NULL;
        const char *root = NULL, *extra = "";

        xlu_cfg_get_string (config, "root", &root);
        xlu_cfg_get_string (config, "extra", &extra);

        if (root) {
            if (asprintf(&cmdline, "root=%s %s", root, extra) == -1)
                cmdline = NULL;
        } else {
            cmdline = strdup(extra);
        }

        if ((root || extra) && !cmdline) {
            fprintf(stderr, "Failed to allocate memory for cmdline\n");
            exit(1);
        }

        xlu_cfg_replace_string (config, "bootloader", &b_info->u.pv.bootloader);
        xlu_cfg_replace_string (config, "bootloader_args", &b_info->u.pv.bootloader_args);

        if (!b_info->u.pv.bootloader && !b_info->kernel.path) {
            fprintf(stderr, "Neither kernel nor bootloader specified\n");
            exit(1);
        }

        b_info->u.pv.cmdline = cmdline;
        xlu_cfg_replace_string (config, "ramdisk", &b_info->u.pv.ramdisk.path);
    }

    if (!xlu_cfg_get_list (config, "disk", &vbds, 0, 0)) {
        d_config->num_disks = 0;
        d_config->disks = NULL;
        while ((buf = xlu_cfg_get_listitem (vbds, d_config->num_disks)) != NULL) {
            libxl_device_disk *disk;
            char *buf2 = strdup(buf);
            char *p, *p2;

            d_config->disks = (libxl_device_disk *) realloc(d_config->disks, sizeof (libxl_device_disk) * (d_config->num_disks + 1));
            disk = d_config->disks + d_config->num_disks;

            disk->backend_domid = 0;
            disk->domid = 0;
            disk->unpluggable = 0;

            p = strtok(buf2, ",:");
            while (*p == ' ')
                p++;
            if (!strcmp(p, "phy")) {
                disk->phystype = PHYSTYPE_PHY;
            } else if (!strcmp(p, "file")) {
                disk->phystype = PHYSTYPE_FILE;
            } else if (!strcmp(p, "tap")) {
                p = strtok(NULL, ":");
                if (!strcmp(p, "aio")) {
                    disk->phystype = PHYSTYPE_AIO;
                } else if (!strcmp(p, "vhd")) {
                    disk->phystype = PHYSTYPE_VHD;
                } else if (!strcmp(p, "qcow")) {
                    disk->phystype = PHYSTYPE_QCOW;
                } else if (!strcmp(p, "qcow2")) {
                    disk->phystype = PHYSTYPE_QCOW2;
                }
            }
            p = strtok(NULL, ",");
            while (*p == ' ')
                p++;
            disk->physpath= strdup(p);
            p = strtok(NULL, ",");
            while (*p == ' ')
                p++;
            p2 = strchr(p, ':');
            if (p2 == NULL) {
                disk->virtpath = strdup(p);
                disk->is_cdrom = 0;
                disk->unpluggable = 1;
            } else {
                *p2 = '\0';
                disk->virtpath = strdup(p);
                if (!strcmp(p2 + 1, "cdrom")) {
                    disk->is_cdrom = 1;
                    disk->unpluggable = 1;
                } else
                    disk->is_cdrom = 0;
            }
            p = strtok(NULL, ",");
            while (*p == ' ')
                p++;
            disk->readwrite = (p[0] == 'w') ? 1 : 0;
            free(buf2);
            d_config->num_disks++;
        }
    }

    if (!xlu_cfg_get_list (config, "vif", &nics, 0, 0)) {
        d_config->num_vifs = 0;
        d_config->vifs = NULL;
        while ((buf = xlu_cfg_get_listitem (nics, d_config->num_vifs)) != NULL) {
            libxl_device_nic *nic;
            char *buf2 = strdup(buf);
            char *p, *p2;

            d_config->vifs = (libxl_device_nic *) realloc(d_config->vifs, sizeof (libxl_device_nic) * (d_config->num_vifs+1));
            nic = d_config->vifs + d_config->num_vifs;
            init_nic_info(nic, d_config->num_vifs);

            p = strtok(buf2, ",");
            if (!p)
                goto skip;
            do {
                while (*p == ' ')
                    p++;
                if ((p2 = strchr(p, '=')) == NULL)
                    break;
                *p2 = '\0';
                if (!strcmp(p, "model")) {
                    free(nic->model);
                    nic->model = strdup(p2 + 1);
                } else if (!strcmp(p, "mac")) {
                    char *p3 = p2 + 1;
                    *(p3 + 2) = '\0';
                    nic->mac[0] = strtol(p3, NULL, 16);
                    p3 = p3 + 3;
                    *(p3 + 2) = '\0';
                    nic->mac[1] = strtol(p3, NULL, 16);
                    p3 = p3 + 3;
                    *(p3 + 2) = '\0';
                    nic->mac[2] = strtol(p3, NULL, 16);
                    p3 = p3 + 3;
                    *(p3 + 2) = '\0';
                    nic->mac[3] = strtol(p3, NULL, 16);
                    p3 = p3 + 3;
                    *(p3 + 2) = '\0';
                    nic->mac[4] = strtol(p3, NULL, 16);
                    p3 = p3 + 3;
                    *(p3 + 2) = '\0';
                    nic->mac[5] = strtol(p3, NULL, 16);
                } else if (!strcmp(p, "bridge")) {
                    free(nic->bridge);
                    nic->bridge = strdup(p2 + 1);
                } else if (!strcmp(p, "type")) {
                    if (!strcmp(p2 + 1, "ioemu"))
                        nic->nictype = NICTYPE_IOEMU;
                    else
                        nic->nictype = NICTYPE_VIF;
                } else if (!strcmp(p, "ip")) {
                    inet_pton(AF_INET, p2 + 1, &nic->ip);
                } else if (!strcmp(p, "script")) {
                    nic->script = strdup(p2 + 1);
                } else if (!strcmp(p, "vifname")) {
                    nic->ifname = strdup(p2 + 1);
                } else if (!strcmp(p, "backend")) {
                    if(libxl_name_to_domid(&ctx, (p2 + 1), &(nic->backend_domid))) {
                        fprintf(stderr, "Specified backend domain does not exist, defaulting to Dom0\n");
                        nic->backend_domid = 0;
                    }
                } else if (!strcmp(p, "rate")) {
                    fprintf(stderr, "the rate parameter for vifs is currently not supported\n");
                } else if (!strcmp(p, "accel")) {
                    fprintf(stderr, "the accel parameter for vifs is currently not supported\n");
                }
            } while ((p = strtok(NULL, ",")) != NULL);
skip:
            free(buf2);
            d_config->num_vifs++;
        }
    }

    if (!xlu_cfg_get_list(config, "vif2", &net2s, 0, 0)) {
        d_config->num_vif2s = 0;
        d_config->vif2s = NULL;
        while ((buf = xlu_cfg_get_listitem(net2s, d_config->num_vif2s))) {
            libxl_device_net2 *net2;
            char *buf2 = strdup(buf);
            char *p;

            d_config->vif2s = realloc(d_config->vif2s, sizeof (libxl_device_net2) * (d_config->num_vif2s + 1));
            net2 = d_config->vif2s + d_config->num_vif2s;

            init_net2_info(net2, d_config->num_vif2s);

            for (p = strtok(buf2, ","); p; p = strtok(NULL, ",")) {
                char* val;
                while (isblank(*p))
                    p++;
                val = strchr(p, '=');
                if (val == NULL)
                    continue;
                *val++ = 0;
                if (!strcmp("front_mac", p)) {
                    libxl_strtomac(val, net2->front_mac);
                } else if (!strcmp("back_mac", p)) {
                    libxl_strtomac(val, net2->back_mac);
                } else if (!strcmp("backend", p)) {
                    domain_qualifier_to_domid(val, &net2->backend_domid, 0);
                } else if (!strcmp("trusted", p)) {
                    net2->trusted = (*val == '1');
                } else if (!strcmp("back_trusted", p)) {
                    net2->back_trusted = (*val == '1');
                } else if (!strcmp("bridge", p)) {
                    net2->bridge = strdup(val);
                } else if (!strcmp("filter_mac", p)) {
                    net2->filter_mac = (*val == '1');
                } else if (!strcmp("front_filter_mac", p)) {
                    net2->front_filter_mac = (*val == '1');
                } else if (!strcmp("pdev", p)) {
                    net2->pdev = strtoul(val, NULL, 10);
                } else if (!strcmp("max_bypasses", p)) {
                    net2->max_bypasses = strtoul(val, NULL, 10);
                }
            }
            free(buf2);
            d_config->num_vif2s++;
        }
    }

    if (!xlu_cfg_get_list (config, "vfb", &cvfbs, 0, 0)) {
        d_config->num_vfbs = 0;
        d_config->num_vkbs = 0;
        d_config->vfbs = NULL;
        d_config->vkbs = NULL;
        while ((buf = xlu_cfg_get_listitem (cvfbs, d_config->num_vfbs)) != NULL) {
            libxl_device_vfb *vfb;
            libxl_device_vkb *vkb;

            char *buf2 = strdup(buf);
            char *p, *p2;

            d_config->vfbs = (libxl_device_vfb *) realloc(d_config->vfbs, sizeof(libxl_device_vfb) * (d_config->num_vfbs + 1));
            vfb = d_config->vfbs + d_config->num_vfbs;
            init_vfb_info(vfb, d_config->num_vfbs);

            d_config->vkbs = (libxl_device_vkb *) realloc(d_config->vkbs, sizeof(libxl_device_vkb) * (d_config->num_vkbs + 1));
            vkb = d_config->vkbs + d_config->num_vkbs;
            init_vkb_info(vkb, d_config->num_vkbs);

            p = strtok(buf2, ",");
            if (!p)
                goto skip_vfb;
            do {
                while (*p == ' ')
                    p++;
                if ((p2 = strchr(p, '=')) == NULL)
                    break;
                *p2 = '\0';
                if (!strcmp(p, "vnc")) {
                    vfb->vnc = atoi(p2 + 1);
                } else if (!strcmp(p, "vnclisten")) {
                    vfb->vnclisten = strdup(p2 + 1);
                } else if (!strcmp(p, "vncpasswd")) {
                    vfb->vncpasswd = strdup(p2 + 1);
                } else if (!strcmp(p, "vncdisplay")) {
                    vfb->vncdisplay = atoi(p2 + 1);
                } else if (!strcmp(p, "vncunused")) {
                    vfb->vncunused = atoi(p2 + 1);
                } else if (!strcmp(p, "keymap")) {
                    vfb->keymap = strdup(p2 + 1);
                } else if (!strcmp(p, "sdl")) {
                    vfb->sdl = atoi(p2 + 1);
                } else if (!strcmp(p, "opengl")) {
                    vfb->opengl = atoi(p2 + 1);
                } else if (!strcmp(p, "display")) {
                    vfb->display = strdup(p2 + 1);
                } else if (!strcmp(p, "xauthority")) {
                    vfb->xauthority = strdup(p2 + 1);
                }
            } while ((p = strtok(NULL, ",")) != NULL);
skip_vfb:
            free(buf2);
            d_config->num_vfbs++;
            d_config->num_vkbs++;
        }
    }

    if (!xlu_cfg_get_long (config, "pci_msitranslate", &l))
        pci_msitranslate = l;

    if (!xlu_cfg_get_long (config, "pci_power_mgmt", &l))
        pci_power_mgmt = l;

    if (!xlu_cfg_get_list (config, "pci", &pcis, 0, 0)) {
        int i;
        d_config->num_pcidevs = 0;
        d_config->pcidevs = NULL;
        for(i = 0; (buf = xlu_cfg_get_listitem (pcis, i)) != NULL; i++) {
            libxl_device_pci *pcidev;

            d_config->pcidevs = (libxl_device_pci *) realloc(d_config->pcidevs, sizeof (libxl_device_pci) * (d_config->num_pcidevs + 1));
            pcidev = d_config->pcidevs + d_config->num_pcidevs;
            memset(pcidev, 0x00, sizeof(libxl_device_pci));

            pcidev->msitranslate = pci_msitranslate;
            pcidev->power_mgmt = pci_power_mgmt;
            if (!libxl_device_pci_parse_bdf(&ctx, pcidev, buf))
                d_config->num_pcidevs++;
        }
    }

    if (c_info->hvm == 1) {
        /* init dm from c and b */
        init_dm_info(dm_info, c_info, b_info);

        /* then process config related to dm */
        xlu_cfg_replace_string (config, "device_model", &dm_info->device_model);
        if (!xlu_cfg_get_long (config, "stdvga", &l))
            dm_info->stdvga = l;
        if (!xlu_cfg_get_long (config, "vnc", &l))
            dm_info->vnc = l;
        xlu_cfg_replace_string (config, "vnclisten", &dm_info->vnclisten);
        xlu_cfg_replace_string (config, "vncpasswd", &dm_info->vncpasswd);
        if (!xlu_cfg_get_long (config, "vncdisplay", &l))
            dm_info->vncdisplay = l;
        if (!xlu_cfg_get_long (config, "vncunused", &l))
            dm_info->vncunused = l;
        xlu_cfg_replace_string (config, "keymap", &dm_info->keymap);
        if (!xlu_cfg_get_long (config, "sdl", &l))
            dm_info->sdl = l;
        if (!xlu_cfg_get_long (config, "opengl", &l))
            dm_info->opengl = l;
        if (!xlu_cfg_get_long (config, "nographic", &l))
            dm_info->nographic = l;
        xlu_cfg_replace_string (config, "serial", &dm_info->serial);
        xlu_cfg_replace_string (config, "boot", &dm_info->boot);
        if (!xlu_cfg_get_long (config, "usb", &l))
            dm_info->usb = l;
        xlu_cfg_replace_string (config, "usbdevice", &dm_info->usbdevice);
        xlu_cfg_replace_string (config, "soundhw", &dm_info->soundhw);
        if (!xlu_cfg_get_long (config, "xen_platform_pci", &l))
            dm_info->xen_platform_pci = l;
    }

    dm_info->type = c_info->hvm ? XENFV : XENPV;

    xlu_cfg_destroy(config);
}

static void *xmalloc(size_t sz) {
    void *r;
    r = malloc(sz);
    if (!r) { fprintf(stderr,"xl: Unable to malloc %lu bytes.\n",
                      (unsigned long)sz); exit(-ERROR_FAIL); }
    return r;
}

static void *xrealloc(void *ptr, size_t sz) {
    void *r;
    if (!sz) { free(ptr); return 0; }
      /* realloc(non-0, 0) has a useless return value;
       * but xrealloc(anything, 0) is like free
       */
    r = realloc(ptr, sz);
    if (!r) { fprintf(stderr,"xl: Unable to realloc to %lu bytes.\n",
                      (unsigned long)sz); exit(-ERROR_FAIL); }
    return r;
}

static pid_t autoconnect_console(void)
{
    pid_t pid;

    pid = fork();
    if (pid < 0) {
        perror("unable to fork xenconsole");
        return ERROR_FAIL;
    } else if (pid > 0)
        return pid;

    libxl_ctx_postfork(&ctx);

    sleep(1);
    libxl_primary_console_exec(&ctx, domid);
    /* Do not return. xl continued in child process */
    fprintf(stderr, "Unable to attach console\n");
    _exit(1);
}

/* Returns 1 if domain should be restarted, 2 if domain should be renamed then restarted  */
static int handle_domain_death(libxl_ctx *ctx, uint32_t domid, libxl_event *event,
                               struct domain_config *d_config, libxl_dominfo *info)
{
    int restart = 0;
    enum action_on_shutdown action;

    switch (info->shutdown_reason) {
    case SHUTDOWN_poweroff:
        action = d_config->on_poweroff;
        break;
    case SHUTDOWN_reboot:
        action = d_config->on_reboot;
        break;
    case SHUTDOWN_suspend:
        return 0;
    case SHUTDOWN_crash:
        action = d_config->on_crash;
        break;
    case SHUTDOWN_watchdog:
        action = d_config->on_watchdog;
        break;
    default:
        LOG("Unknown shutdown reason code %d. Destroying domain.", info->shutdown_reason);
        action = ACTION_DESTROY;
    }

    LOG("Action for shutdown reason code %d is %s", info->shutdown_reason, action_on_shutdown_names[action]);

    if (action == ACTION_COREDUMP_DESTROY || action == ACTION_COREDUMP_RESTART) {
        char *corefile;
        int rc;

        if (asprintf(&corefile, "/var/xen/dump/%s", d_config->c_info.name) < 0) {
            LOG("failed to construct core dump path");
        } else {
            LOG("dumping core to %s", corefile);
            rc=libxl_domain_core_dump(ctx, domid, corefile);
            if (rc) LOG("core dump failed (rc=%d).", rc);
        }
        /* No point crying over spilled milk, continue on failure. */

        if (action == ACTION_COREDUMP_DESTROY)
            action = ACTION_DESTROY;
        else
            action = ACTION_RESTART;
    }

    switch (action) {
    case ACTION_PRESERVE:
        break;

    case ACTION_RESTART_RENAME:
        restart = 2;
        break;

    case ACTION_RESTART:
        restart = 1;
        /* fall-through */
    case ACTION_DESTROY:
        LOG("Domain %d needs to be cleaned up: destroying the domain", domid);
        libxl_domain_destroy(ctx, domid, 0);
        break;

    case ACTION_COREDUMP_DESTROY:
    case ACTION_COREDUMP_RESTART:
        /* Already handled these above. */
        abort();
    }

    return restart;
}

static int preserve_domain(libxl_ctx *ctx, uint32_t domid, libxl_event *event,
                           struct domain_config *d_config, libxl_dominfo *info)
{
    time_t now;
    struct tm tm;
    char stime[24];

    libxl_uuid new_uuid;

    int rc;

    now = time(NULL);
    if (now == ((time_t) -1)) {
        LOG("Failed to get current time for domain rename");
        return 0;
    }

    tzset();
    if (gmtime_r(&now, &tm) == NULL) {
        LOG("Failed to convert time to UTC");
        return 0;
    }

    if (!strftime(&stime[0], sizeof(stime), "-%Y%m%dT%H%MZ", &tm)) {
        LOG("Failed to format time as a string");
        return 0;
    }

    libxl_uuid_generate(&new_uuid);

    LOG("Preserving domain %d %s with suffix%s", domid, d_config->c_info.name, stime);
    rc = libxl_domain_preserve(ctx, domid, &d_config->c_info, stime, new_uuid);

    return rc == 0 ? 1 : 0;
}

struct domain_create {
    int debug;
    int daemonize;
    int paused;
    int dryrun;
    int quiet;
    int console_autoconnect;
    const char *config_file;
    const char *extra_config; /* extra config string */
    const char *restore_file;
    int migrate_fd; /* -1 means none */
    char **migration_domname_r; /* from malloc */
};

static int freemem(libxl_domain_build_info *b_info, libxl_device_model_info *dm_info)
{
    int rc, retries = 3;
    uint32_t need_memkb, free_memkb;

    if (!autoballoon)
        return 0;

    rc = libxl_domain_need_memory(&ctx, b_info, dm_info, &need_memkb);
    if (rc < 0)
        return rc;

    do {
        rc = libxl_get_free_memory(&ctx, &free_memkb);
        if (rc < 0)
            return rc;

        if (free_memkb >= need_memkb)
            return 0;

        rc = libxl_set_memory_target(&ctx, 0, free_memkb - need_memkb, 1, 0);
        if (rc < 0)
            return rc;

        rc = libxl_wait_for_free_memory(&ctx, domid, need_memkb, 10);
        if (!rc)
            return 0;
        else if (rc != ERROR_NOMEM)
            return rc;

        /* the memory target has been reached but the free memory is still
         * not enough: loop over again */
        rc = libxl_wait_for_memory_target(&ctx, 0, 1);
        if (rc < 0)
            return rc;

        retries--;
    } while (retries > 0);

    return ERROR_NOMEM;
}

static int create_domain(struct domain_create *dom_info)
{
    struct domain_config d_config;

    libxl_domain_build_state state;
    libxl_device_model_info dm_info;
    libxl_device_console console;

    int debug = dom_info->debug;
    int daemonize = dom_info->daemonize;
    int paused = dom_info->paused;
    const char *config_file = dom_info->config_file;
    const char *extra_config = dom_info->extra_config;
    const char *restore_file = dom_info->restore_file;
    int migrate_fd = dom_info->migrate_fd;

    int i, fd;
    int need_daemon = 1;
    int ret, rc;
    libxl_device_model_starting *dm_starting = 0;
    libxl_waiter *w1 = NULL, *w2 = NULL;
    void *config_data = 0;
    int config_len = 0;
    int restore_fd = -1;
    struct save_file_header hdr;
    pid_t child_console_pid = -1;
    int status = 0;

    memset(&d_config, 0x00, sizeof(d_config));
    memset(&dm_info, 0x00, sizeof(dm_info));

    if (restore_file) {
        uint8_t *optdata_begin = 0;
        const uint8_t *optdata_here = 0;
        union { uint32_t u32; char b[4]; } u32buf;
        uint32_t badflags;

        restore_fd = migrate_fd >= 0 ? migrate_fd :
            open(restore_file, O_RDONLY);

        CHK_ERRNO( libxl_read_exactly(&ctx, restore_fd, &hdr,
                   sizeof(hdr), restore_file, "header") );
        if (memcmp(hdr.magic, savefileheader_magic, sizeof(hdr.magic))) {
            fprintf(stderr, "File has wrong magic number -"
                    " corrupt or for a different tool?\n");
            return ERROR_INVAL;
        }
        if (hdr.byteorder != SAVEFILE_BYTEORDER_VALUE) {
            fprintf(stderr, "File has wrong byte order\n");
            return ERROR_INVAL;
        }
        fprintf(stderr, "Loading new save file %s"
                " (new xl fmt info"
                " 0x%"PRIx32"/0x%"PRIx32"/%"PRIu32")\n",
                restore_file, hdr.mandatory_flags, hdr.optional_flags,
                hdr.optional_data_len);

        badflags = hdr.mandatory_flags & ~( 0 /* none understood yet */ );
        if (badflags) {
            fprintf(stderr, "Savefile has mandatory flag(s) 0x%"PRIx32" "
                    "which are not supported; need newer xl\n",
                    badflags);
            return ERROR_INVAL;
        }
        if (hdr.optional_data_len) {
            optdata_begin = xmalloc(hdr.optional_data_len);
            CHK_ERRNO( libxl_read_exactly(&ctx, restore_fd, optdata_begin,
                   hdr.optional_data_len, restore_file, "optdata") );
        }

#define OPTDATA_LEFT  (hdr.optional_data_len - (optdata_here - optdata_begin))
#define WITH_OPTDATA(amt, body)                                 \
            if (OPTDATA_LEFT < (amt)) {                         \
                fprintf(stderr, "Savefile truncated.\n");       \
                return ERROR_INVAL;                             \
            } else {                                            \
                body;                                           \
                optdata_here += (amt);                          \
            }

        optdata_here = optdata_begin;

        if (OPTDATA_LEFT) {
            fprintf(stderr, " Savefile contains xl domain config\n");
            WITH_OPTDATA(4, {
                memcpy(u32buf.b, optdata_here, 4);
                config_len = u32buf.u32;
            });
            WITH_OPTDATA(config_len, {
                config_data = xmalloc(config_len);
                memcpy(config_data, optdata_here, config_len);
            });
        }

    }

    if (config_file) {
        free(config_data);  config_data = 0;
        ret = libxl_read_file_contents(&ctx, config_file,
                                       &config_data, &config_len);
        if (ret) { fprintf(stderr, "Failed to read config file: %s: %s\n",
                           config_file, strerror(errno)); return ERROR_FAIL; }
        if (!restore_file && extra_config && strlen(extra_config)) {
            if (config_len > INT_MAX - (strlen(extra_config) + 2 + 1)) {
                fprintf(stderr, "Failed to attach extra configration\n");
                return ERROR_FAIL;
            }
            /* allocate space for the extra config plus two EOLs plus \0 */
            config_data = realloc(config_data, config_len
                + strlen(extra_config) + 2 + 1);
            if (!config_data) {
                fprintf(stderr, "Failed to realloc config_data\n");
                return ERROR_FAIL;
            }
            config_len += sprintf(config_data + config_len, "\n%s\n",
                extra_config);
        }
    } else {
        if (!config_data) {
            fprintf(stderr, "Config file not specified and"
                    " none in save file\n");
            return ERROR_INVAL;
        }
        config_file = "<saved>";
    }

    if (!dom_info->quiet)
        printf("Parsing config file %s\n", config_file);

    parse_config_data(config_file, config_data, config_len, &d_config, &dm_info);

    ret = 0;
    if (dom_info->dryrun)
        goto out;

    if (migrate_fd >= 0) {
        if (d_config.c_info.name) {
            /* when we receive a domain we get its name from the config
             * file; and we receive it to a temporary name */
            assert(!common_domname);
            
            common_domname = d_config.c_info.name;
            d_config.c_info.name = 0; /* steals allocation from config */

            if (asprintf(&d_config.c_info.name,
                         "%s--incoming", d_config.c_info.name) < 0) {
                fprintf(stderr, "Failed to allocate memory in asprintf\n");
                exit(1);
            }
            *dom_info->migration_domname_r = strdup(d_config.c_info.name);
        }
    }

    if (debug)
        printf_info(-1, &d_config, &dm_info);

start:
    domid = 0;

    rc = acquire_lock();
    if (rc < 0)
        goto error_out;

    ret = freemem(&d_config.b_info, &dm_info);
    if (ret < 0) {
        fprintf(stderr, "failed to free memory for the domain\n");
        ret = ERROR_FAIL;
        goto error_out;
    }

    ret = libxl_domain_make(&ctx, &d_config.c_info, &domid);
    if (ret) {
        fprintf(stderr, "cannot make domain: %d\n", ret);
        ret = ERROR_FAIL;
        goto error_out;
    }

    ret = libxl_userdata_store(&ctx, domid, "xl",
                                    config_data, config_len);
    if (ret) {
        perror("cannot save config file");
        ret = ERROR_FAIL;
        goto error_out;
    }

    if (dom_info->console_autoconnect && !d_config.c_info.hvm) {
        child_console_pid = autoconnect_console();
        if (child_console_pid < 0)
            goto error_out;
    }

    if (!restore_file) {
        ret = libxl_run_bootloader(&ctx, &d_config.b_info, d_config.num_disks > 0 ? &d_config.disks[0] : NULL, domid);
        if (ret) {
            fprintf(stderr, "failed to run bootloader: %d\n", ret);
            goto error_out;
        }
    }

    if (!restore_file || !need_daemon) {
        if (dm_info.saved_state) {
            free(dm_info.saved_state);
            dm_info.saved_state = NULL;
        }
        ret = libxl_domain_build(&ctx, &d_config.b_info, domid, &state);
    } else {
        ret = libxl_domain_restore(&ctx, &d_config.b_info, domid, restore_fd, &state, &dm_info);
    }

    if (ret) {
        fprintf(stderr, "cannot (re-)build domain: %d\n", ret);
        ret = ERROR_FAIL;
        goto error_out;
    }

    for (i = 0; i < d_config.num_disks; i++) {
        d_config.disks[i].domid = domid;
        ret = libxl_device_disk_add(&ctx, domid, &d_config.disks[i]);
        if (ret) {
            fprintf(stderr, "cannot add disk %d to domain: %d\n", i, ret);
            ret = ERROR_FAIL;
            goto error_out;
        }
    }
    for (i = 0; i < d_config.num_vifs; i++) {
        d_config.vifs[i].domid = domid;
        ret = libxl_device_nic_add(&ctx, domid, &d_config.vifs[i]);
        if (ret) {
            fprintf(stderr, "cannot add nic %d to domain: %d\n", i, ret);
            ret = ERROR_FAIL;
            goto error_out;
        }
    }
    if (!d_config.c_info.hvm) {
        for (i = 0; i < d_config.num_vif2s; i++) {
            d_config.vif2s[i].domid = domid;
            ret = libxl_device_net2_add(&ctx, domid, &d_config.vif2s[i]);
            if (ret) {
                fprintf(stderr, "cannot add net2 %d to domain: %d\n", i, ret);
                ret = ERROR_FAIL;
                goto error_out;
            }
        }
    }
    if (d_config.c_info.hvm) {
        init_console_info(&console, 0, &state);
        console.domid = domid;
        libxl_device_console_add(&ctx, domid, &console);
        dm_info.domid = domid;
        MUST( libxl_create_device_model(&ctx, &dm_info,
                                        d_config.disks, d_config.num_disks,
                                        d_config.vifs, d_config.num_vifs,
                                        &dm_starting) );
    } else {
        for (i = 0; i < d_config.num_vfbs; i++) {
            d_config.vfbs[i].domid = domid;
            libxl_device_vfb_add(&ctx, domid, &d_config.vfbs[i]);
            d_config.vkbs[i].domid = domid;
            libxl_device_vkb_add(&ctx, domid, &d_config.vkbs[i]);
        }
        init_console_info(&console, 0, &state);
        console.domid = domid;
        if (d_config.num_vfbs)
             console.consback = LIBXL_CONSBACK_IOEMU;
        libxl_device_console_add(&ctx, domid, &console);
        if (d_config.num_vfbs)
            libxl_create_xenpv_qemu(&ctx, domid, d_config.vfbs, &dm_starting);
    }

    if (dm_starting)
        MUST( libxl_confirm_device_model_startup(&ctx, dm_starting) );
    for (i = 0; i < d_config.num_pcidevs; i++)
        libxl_device_pci_add(&ctx, domid, &d_config.pcidevs[i]);

    if (dom_info->console_autoconnect && d_config.c_info.hvm) {
        child_console_pid = autoconnect_console();
        if (child_console_pid < 0)
            goto error_out;
    }

    release_lock();

    if (!paused)
        libxl_domain_unpause(&ctx, domid);

    ret = domid; /* caller gets success in parent */
    if (!daemonize)
        goto out;

    if (need_daemon) {
        char *fullname, *name;
        pid_t child1, got_child;
        int nullfd;

        child1 = libxl_fork(&ctx);
        if (child1) {
            for (;;) {
                got_child = waitpid(child1, &status, 0);
                if (got_child == child1) break;
                assert(got_child == -1);
                if (errno != EINTR) {
                    perror("failed to wait for daemonizing child");
                    ret = ERROR_FAIL;
                    goto error_out;
                }
            }
            if (status) {
                libxl_report_child_exitstatus(&ctx, XTL_ERROR,
                           "daemonizing child", child1, status);
                ret = ERROR_FAIL;
                goto error_out;
            }
            ret = domid;
            goto out;
        }

        rc = libxl_ctx_postfork(&ctx);
        if (rc) {
            LOG("failed to reinitialise context after fork");
            exit(-1);
        }

        if (asprintf(&name, "xl-%s", d_config.c_info.name) < 0) {
            LOG("Failed to allocate memory in asprintf");
            exit(1);
        }
        rc = libxl_create_logfile(&ctx, name, &fullname);
        if (rc) {
            LOG("failed to open logfile %s: %s",fullname,strerror(errno));
            exit(-1);
        }

        CHK_ERRNO(( logfile = open(fullname, O_WRONLY|O_CREAT, 0644) )<0);
        free(fullname);
        free(name);

        CHK_ERRNO(( nullfd = open("/dev/null", O_RDONLY) )<0);
        dup2(nullfd, 0);
        dup2(logfile, 1);
        dup2(logfile, 2);

        CHK_ERRNO(daemon(0, 1) < 0);
        need_daemon = 0;
    }
    LOG("Waiting for domain %s (domid %d) to die [pid %ld]",
        d_config.c_info.name, domid, (long)getpid());
    w1 = (libxl_waiter*) xmalloc(sizeof(libxl_waiter) * d_config.num_disks);
    w2 = (libxl_waiter*) xmalloc(sizeof(libxl_waiter));
    libxl_wait_for_disk_ejects(&ctx, domid, d_config.disks, d_config.num_disks, w1);
    libxl_wait_for_domain_death(&ctx, domid, w2);
    libxl_get_wait_fd(&ctx, &fd);
    while (1) {
        int ret;
        fd_set rfds;
        libxl_dominfo info;
        libxl_event event;
        libxl_device_disk disk;

        FD_ZERO(&rfds);
        FD_SET(fd, &rfds);

        ret = select(fd + 1, &rfds, NULL, NULL, NULL);
        if (!ret)
            continue;
        libxl_get_event(&ctx, &event);
        switch (event.type) {
            case LIBXL_EVENT_DOMAIN_DEATH:
                ret = libxl_event_get_domain_death_info(&ctx, domid, &event, &info);

                if (ret < 0) continue;

                LOG("Domain %d is dead", domid);

                if (ret) {
                    switch (handle_domain_death(&ctx, domid, &event, &d_config, &info)) {
                    case 2:
                        if (!preserve_domain(&ctx, domid, &event, &d_config, &info)) {
                            /* If we fail then exit leaving the old domain in place. */
                            ret = -1;
                            goto out;
                        }

                        /* Otherwise fall through and restart. */
                    case 1:

                        libxl_free_waiter(w1);
                        libxl_free_waiter(w2);
                        free(w1);
                        free(w2);

                        /*
                         * Do not attempt to reconnect if we come round again due to a
                         * guest reboot -- the stdin/out will be disconnected by then.
                         */
                        dom_info->console_autoconnect = 0;

                        /*
                         * XXX FIXME: If this sleep is not there then domain
                         * re-creation fails sometimes.
                         */
                        LOG("Done. Rebooting now");
                        sleep(2);
                        goto start;
                    case 0:
                        LOG("Done. Exiting now");
                        ret = 0;
                        goto out;
                    }
                }
                break;
            case LIBXL_EVENT_DISK_EJECT:
                if (libxl_event_get_disk_eject_info(&ctx, domid, &event, &disk))
                    libxl_cdrom_insert(&ctx, domid, &disk);
                break;
        }
        libxl_free_event(&event);
    }

error_out:
    release_lock();
    if (domid)
        libxl_domain_destroy(&ctx, domid, 0);

out:
    if (logfile != 2)
        close(logfile);

    libxl_device_model_info_destroy(&dm_info);

    free_domain_config(&d_config);

    free(config_data);

waitpid_out:
    if (child_console_pid > 0 &&
            waitpid(child_console_pid, &status, 0) < 0 && errno == EINTR)
        goto waitpid_out;

    /*
     * If we have daemonized then do not return to the caller -- this has
     * already happened in the parent.
     */
    if ( !need_daemon )
        exit(ret);

    return ret;
}

void help(char *command)
{
    int i;
    struct cmd_spec *cmd;

    if (!command || !strcmp(command, "help")) {
        printf("Usage xl [-v] <subcommand> [args]\n\n");
        printf("xl full list of subcommands:\n\n");
        for (i = 0; i < cmdtable_len; i++)
            printf(" %-20s%s\n",
                   cmd_table[i].cmd_name, cmd_table[i].cmd_desc);
    } else {
        cmd = cmdtable_lookup(command);
        if (cmd) {
            printf("Usage: xl [-v] %s %s\n\n%s.\n\n",
                   cmd->cmd_name,
                   cmd->cmd_usage,
                   cmd->cmd_desc);
            if (cmd->cmd_option)
                printf("Options:\n\n%s\n", cmd->cmd_option);
        }
        else {
            printf("command \"%s\" not implemented\n", command);
        }
    }
}

static int64_t parse_mem_size_kb(char *mem)
{
    char *endptr;
    int64_t kbytes;

    kbytes = strtoll(mem, &endptr, 10);

    if (strlen(endptr) > 1)
        return -1;

    switch (tolower((uint8_t)*endptr)) {
    case 't':
        kbytes <<= 10;
    case 'g':
        kbytes <<= 10;
    case '\0':
    case 'm':
        kbytes <<= 10;
    case 'k':
        break;
    case 'b':
        kbytes >>= 10;
        break;
    default:
        return -1;
    }

    return kbytes;
}

static int set_memory_max(char *p, char *mem)
{
    int64_t memorykb;
    int rc;

    find_domain(p);

    memorykb = parse_mem_size_kb(mem);
    if (memorykb == -1) {
        fprintf(stderr, "invalid memory size: %s\n", mem);
        exit(3);
    }

    rc = libxl_domain_setmaxmem(&ctx, domid, memorykb);

    return rc;
}

int main_memmax(int argc, char **argv)
{
    int opt = 0;
    char *p = NULL, *mem;
    int rc;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("mem-max");
            exit(0);
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc - 1) {
        help("mem-max");
        return 2;
    }

    p = argv[optind];
    mem = argv[optind + 1];

    rc = set_memory_max(p, mem);
    if (rc) {
        fprintf(stderr, "cannot set domid %d static max memory to : %s\n", domid, mem);
        return 1;
    }

    return 0;
}

static void set_memory_target(char *p, char *mem)
{
    long long int memorykb;

    find_domain(p);

    memorykb = parse_mem_size_kb(mem);
    if (memorykb == -1)  {
        fprintf(stderr, "invalid memory size: %s\n", mem);
        exit(3);
    }

    libxl_set_memory_target(&ctx, domid, memorykb, 0, /* enforce */ 1);
}

int main_memset(int argc, char **argv)
{
    int opt = 0;
    char *p = NULL, *mem;

    while ((opt = getopt(argc, argv, "h:")) != -1) {
        switch (opt) {
        case 'h':
            help("mem-set");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc - 1) {
        help("mem-set");
        return 2;
    }

    p = argv[optind];
    mem = argv[optind + 1];

    set_memory_target(p, mem);
    return 0;
}

static void cd_insert(char *dom, char *virtdev, char *phys)
{
    libxl_device_disk disk;
    char *p;

    find_domain(dom);

    disk.backend_domid = 0;
    disk.domid = domid;
    if (phys) {
        p = strchr(phys, ':');
        if (!p) {
            fprintf(stderr, "No type specified, ");
            disk.physpath = phys;
            if (!strncmp(phys, "/dev", 4)) {
                fprintf(stderr, "assuming phy:\n");
                disk.phystype = PHYSTYPE_PHY;
            } else {
                fprintf(stderr, "assuming file:\n");
                disk.phystype = PHYSTYPE_FILE;
            }
        } else {
            *p = '\0';
            p++;
            disk.physpath = p;
            libxl_string_to_phystype(&ctx, phys, &disk.phystype);
        }
    } else {
            disk.physpath = NULL;
            disk.phystype = 0;
    }
    disk.virtpath = virtdev;
    disk.unpluggable = 1;
    disk.readwrite = 0;
    disk.is_cdrom = 1;

    libxl_cdrom_insert(&ctx, domid, &disk);
}

int main_cd_eject(int argc, char **argv)
{
    int opt = 0;
    char *p = NULL, *virtdev;

    while ((opt = getopt(argc, argv, "hn:")) != -1) {
        switch (opt) {
        case 'h':
            help("cd-eject");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc - 1) {
        help("cd-eject");
        return 2;
    }

    p = argv[optind];
    virtdev = argv[optind + 1];

    cd_insert(p, virtdev, NULL);
    return 0;
}

int main_cd_insert(int argc, char **argv)
{
    int opt = 0;
    char *p = NULL, *file = NULL, *virtdev;

    while ((opt = getopt(argc, argv, "hn:")) != -1) {
        switch (opt) {
        case 'h':
            help("cd-insert");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc - 2) {
        help("cd-insert");
        return 2;
    }

    p = argv[optind];
    virtdev = argv[optind + 1];
    file = argv[optind + 2];

    cd_insert(p, virtdev, file);
    return 0;
}

int main_console(int argc, char **argv)
{
    int opt = 0, num = 0;
    libxl_console_constype type = 0;

    while ((opt = getopt(argc, argv, "hn:t:")) != -1) {
        switch (opt) {
        case 'h':
            help("console");
            return 0;
        case 't':
            if (!strcmp(optarg, "pv"))
                type = LIBXL_CONSTYPE_PV;
            else if (!strcmp(optarg, "serial"))
                type = LIBXL_CONSTYPE_SERIAL;
            else {
                fprintf(stderr, "console type supported are: pv, serial\n");
                return 2;
            }
            break;
        case 'n':
            num = atoi(optarg);
            break;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc) {
        help("console");
        return 2;
    }

    find_domain(argv[optind]);
    if (!type)
        libxl_primary_console_exec(&ctx, domid);
    else
        libxl_console_exec(&ctx, domid, num, type);
    fprintf(stderr, "Unable to attach console\n");
    return 1;
}

static int vncviewer(const char *domain_spec, int autopass)
{
    find_domain(domain_spec);
    libxl_vncviewer_exec(&ctx, domid, autopass);
    fprintf(stderr, "Unable to execute vncviewer\n");
    return 1;
}

int main_vncviewer(int argc, char **argv)
{
    static const struct option long_options[] = {
        {"autopass", 0, 0, 'a'},
        {"vncviewer-autopass", 0, 0, 'a'},
        {"help", 0, 0, 'h'},
        {0, 0, 0, 0}
    };
    int opt, autopass = 0;

    while (1) {
        opt = getopt_long(argc, argv, "ah", long_options, NULL);
        if (opt == -1)
            break;

        switch (opt) {
        case 'a':
            autopass = 1;
            break;
        case 'h':
            help("vncviewer");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }

    if (argc - optind != 1) {
        help("vncviewer");
        return 2;
    }

    if (vncviewer(argv[optind], autopass))
        return 1;
    return 0;
}

static void pcilist_assignable(void)
{
    libxl_device_pci *pcidevs;
    int num, i;

    if ( libxl_device_pci_list_assignable(&ctx, &pcidevs, &num) )
        return;
    for (i = 0; i < num; i++) {
        printf("%04x:%02x:%02x.%01x\n",
                pcidevs[i].domain, pcidevs[i].bus, pcidevs[i].dev, pcidevs[i].func);
    }
    free(pcidevs);
}

int main_pcilist_assignable(int argc, char **argv)
{
    int opt;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("pci-list-assignable-devices");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }

    pcilist_assignable();
    return 0;
}

static void pcilist(char *dom)
{
    libxl_device_pci *pcidevs;
    int num, i;

    find_domain(dom);

    if (libxl_device_pci_list_assigned(&ctx, &pcidevs, domid, &num))
        return;
    printf("VFn  domain bus  slot func\n");
    for (i = 0; i < num; i++) {
        printf("0x%02x 0x%04x 0x%02x 0x%02x 0x%01x\n", pcidevs[i].vdevfn, pcidevs[i].domain, pcidevs[i].bus, pcidevs[i].dev, pcidevs[i].func);
        libxl_device_pci_destroy(&pcidevs[i]);
    }
    free(pcidevs);
}

int main_pcilist(int argc, char **argv)
{
    int opt;
    char *domname = NULL;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("pci-list");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc) {
        help("pci-list");
        return 2;
    }

    domname = argv[optind];

    pcilist(domname);
    return 0;
}

static void pcidetach(char *dom, char *bdf)
{
    libxl_device_pci pcidev;

    find_domain(dom);

    memset(&pcidev, 0x00, sizeof(pcidev));
    if (libxl_device_pci_parse_bdf(&ctx, &pcidev, bdf)) {
        fprintf(stderr, "pci-detach: malformed BDF specification \"%s\"\n", bdf);
        exit(2);
    }
    libxl_device_pci_remove(&ctx, domid, &pcidev);
    libxl_device_pci_destroy(&pcidev);
}

int main_pcidetach(int argc, char **argv)
{
    int opt;
    char *domname = NULL, *bdf = NULL;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("pci-detach");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc - 1) {
        help("pci-detach");
        return 2;
    }

    domname = argv[optind];
    bdf = argv[optind + 1];

    pcidetach(domname, bdf);
    return 0;
}
static void pciattach(char *dom, char *bdf, char *vs)
{
    libxl_device_pci pcidev;

    find_domain(dom);

    memset(&pcidev, 0x00, sizeof(pcidev));
    if (libxl_device_pci_parse_bdf(&ctx, &pcidev, bdf)) {
        fprintf(stderr, "pci-attach: malformed BDF specification \"%s\"\n", bdf);
        exit(2);
    }
    libxl_device_pci_add(&ctx, domid, &pcidev);
    libxl_device_pci_destroy(&pcidev);
}

int main_pciattach(int argc, char **argv)
{
    int opt;
    char *domname = NULL, *bdf = NULL, *vs = NULL;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("pci-attach");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc - 1) {
        help("pci-attach");
        return 2;
    }

    domname = argv[optind];
    bdf = argv[optind + 1];

    if (optind + 1 < argc)
        vs = argv[optind + 2];

    pciattach(domname, bdf, vs);
    return 0;
}

static void pause_domain(char *p)
{
    find_domain(p);
    libxl_domain_pause(&ctx, domid);
}

static void unpause_domain(char *p)
{
    find_domain(p);
    libxl_domain_unpause(&ctx, domid);
}

static void destroy_domain(char *p)
{
    int rc;
    find_domain(p);
    if (domid == 0) {
        fprintf(stderr, "Cannot destroy privileged domain 0.\n\n");
        exit(-1);
    }
    rc = libxl_domain_destroy(&ctx, domid, 0);
    if (rc) { fprintf(stderr,"destroy failed (rc=%d)\n.",rc); exit(-1); }
}

static void shutdown_domain(char *p)
{
    int rc;
    find_domain(p);
    rc=libxl_domain_shutdown(&ctx, domid, 0);
    if (rc) { fprintf(stderr,"shutdown failed (rc=%d)\n.",rc);exit(-1); }
}

static void reboot_domain(char *p)
{
    int rc;
    find_domain(p);
    rc=libxl_domain_shutdown(&ctx, domid, 1);
    if (rc) { fprintf(stderr,"reboot failed (rc=%d)\n.",rc);exit(-1); }
}

static void list_domains_details(const libxl_dominfo *info, int nb_domain)
{
    struct domain_config d_config;

    char *config_file;
    uint8_t *data;
    int i, len, rc;
    libxl_device_model_info dm_info;

    for (i = 0; i < nb_domain; i++) {
        /* no detailed info available on dom0 */
        if (info[i].domid == 0)
            continue;
        rc = libxl_userdata_retrieve(&ctx, info[i].domid, "xl", &data, &len);
        if (rc)
            continue;
        CHK_ERRNO(asprintf(&config_file, "<domid %d data>", info[i].domid));
        memset(&d_config, 0x00, sizeof(d_config));
        parse_config_data(config_file, (char *)data, len, &d_config, &dm_info);
        printf_info(info[i].domid, &d_config, &dm_info);
        free_domain_config(&d_config);
        free(data);
        free(config_file);
    }
}

static void list_domains(int verbose, const libxl_dominfo *info, int nb_domain)
{
    int i;

    printf("Name                                        ID   Mem VCPUs\tState\tTime(s)\n");
    for (i = 0; i < nb_domain; i++) {
        char *domname;
        domname = libxl_domid_to_name(&ctx, info[i].domid);
        printf("%-40s %5d %5lu %5d     %c%c%c%c%c%c  %8.1f",
                domname,
                info[i].domid,
                (unsigned long) (info[i].current_memkb / 1024),
                info[i].vcpu_online,
                info[i].running ? 'r' : '-',
                info[i].blocked ? 'b' : '-',
                info[i].paused ? 'p' : '-',
                info[i].shutdown ? 's' : '-',
                info[i].shutdown_reason == SHUTDOWN_crash ? 'c' : '-',
                info[i].dying ? 'd' : '-',
                ((float)info[i].cpu_time / 1e9));
        free(domname);
        if (verbose)
            printf(" " LIBXL_UUID_FMT, LIBXL_UUID_BYTES(info[i].uuid));
        putchar('\n');
    }
}

static void list_vm(void)
{
    libxl_vminfo *info;
    char *domname;
    int nb_vm, i;

    info = libxl_list_vm(&ctx, &nb_vm);

    if (info < 0) {
        fprintf(stderr, "libxl_domain_infolist failed.\n");
        exit(1);
    }
    printf("UUID                                  ID    name\n");
    for (i = 0; i < nb_vm; i++) {
        domname = libxl_domid_to_name(&ctx, info[i].domid);
        printf(LIBXL_UUID_FMT "  %d    %-30s\n", LIBXL_UUID_BYTES(info[i].uuid),
            info[i].domid, domname);
        free(domname);
    }
    free(info);
}

static void save_domain_core_begin(char *domain_spec,
                                   const char *override_config_file,
                                   uint8_t **config_data_r,
                                   int *config_len_r)
{
    int rc;

    find_domain(domain_spec);

    /* configuration file in optional data: */

    if (override_config_file) {
        void *config_v = 0;
        rc = libxl_read_file_contents(&ctx, override_config_file,
                                      &config_v, config_len_r);
        *config_data_r = config_v;
    } else {
        rc = libxl_userdata_retrieve(&ctx, domid, "xl",
                                     config_data_r, config_len_r);
    }
    if (rc) {
        fputs("Unable to get config file\n",stderr);
        exit(2);
    }
}

static void save_domain_core_writeconfig(int fd, const char *filename,
                                  const uint8_t *config_data, int config_len)
{
    struct save_file_header hdr;
    uint8_t *optdata_begin;
    union { uint32_t u32; char b[4]; } u32buf;

    memset(&hdr, 0, sizeof(hdr));
    memcpy(hdr.magic, savefileheader_magic, sizeof(hdr.magic));
    hdr.byteorder = SAVEFILE_BYTEORDER_VALUE;

    optdata_begin= 0;

#define ADD_OPTDATA(ptr, len) ({                                            \
    if ((len)) {                                                        \
        hdr.optional_data_len += (len);                                 \
        optdata_begin = xrealloc(optdata_begin, hdr.optional_data_len); \
        memcpy(optdata_begin + hdr.optional_data_len - (len),           \
               (ptr), (len));                                           \
    }                                                                   \
                          })

    u32buf.u32 = config_len;
    ADD_OPTDATA(u32buf.b,    4);
    ADD_OPTDATA(config_data, config_len);

    /* that's the optional data */

    CHK_ERRNO( libxl_write_exactly(&ctx, fd,
        &hdr, sizeof(hdr), filename, "header") );
    CHK_ERRNO( libxl_write_exactly(&ctx, fd,
        optdata_begin, hdr.optional_data_len, filename, "header") );

    fprintf(stderr, "Saving to %s new xl format (info"
            " 0x%"PRIx32"/0x%"PRIx32"/%"PRIu32")\n",
            filename, hdr.mandatory_flags, hdr.optional_flags,
            hdr.optional_data_len);
}

static int save_domain(char *p, char *filename, int checkpoint,
                const char *override_config_file)
{
    int fd;
    uint8_t *config_data;
    int config_len;

    save_domain_core_begin(p, override_config_file, &config_data, &config_len);

    if (!config_len) {
        fputs(" Savefile will not contain xl domain config\n", stderr);
    }

    fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC, 0644);
    if (fd < 0) {
        fprintf(stderr, "Failed to open temp file %s for writing\n", filename);
        exit(2);
    }

    save_domain_core_writeconfig(fd, filename, config_data, config_len);

    CHK_ERRNO(libxl_domain_suspend(&ctx, NULL, domid, fd));
    close(fd);

    if (checkpoint)
        libxl_domain_unpause(&ctx, domid);
    else
        libxl_domain_destroy(&ctx, domid, 0);

    exit(0);
}

static int migrate_read_fixedmessage(int fd, const void *msg, int msgsz,
                                     const char *what, const char *rune) {
    char buf[msgsz];
    const char *stream;
    int rc;

    stream = rune ? "migration receiver stream" : "migration stream";
    rc = libxl_read_exactly(&ctx, fd, buf, msgsz, stream, what);
    if (rc) return ERROR_FAIL;

    if (memcmp(buf, msg, msgsz)) {
        fprintf(stderr, "%s contained unexpected data instead of %s\n",
                stream, what);
        if (rune)
            fprintf(stderr, "(command run was: %s )\n", rune);
        return ERROR_FAIL;
    }
    return 0;
}

static void migration_child_report(pid_t migration_child, int recv_fd) {
    pid_t child;
    int status, sr;
    struct timeval now, waituntil, timeout;
    static const struct timeval pollinterval = { 0, 1000 }; /* 1ms */

    if (!migration_child) return;

    CHK_ERRNO( gettimeofday(&waituntil, 0) );
    waituntil.tv_sec += 2;

    for (;;) {
        child = waitpid(migration_child, &status, WNOHANG);

        if (child == migration_child) {
            if (status)
                libxl_report_child_exitstatus(&ctx, XTL_INFO,
                                              "migration target process",
                                              migration_child, status);
            break;
        }
        if (child == -1) {
            if (errno == EINTR) continue;
            fprintf(stderr, "wait for migration child [%ld] failed: %s\n",
                    (long)migration_child, strerror(errno));
            break;
        }
        assert(child == 0);

        CHK_ERRNO( gettimeofday(&now, 0) );
        if (timercmp(&now, &waituntil, >)) {
            fprintf(stderr, "migration child [%ld] not exiting, no longer"
                    " waiting (exit status will be unreported)\n",
                    (long)migration_child);
            break;
        }
        timersub(&waituntil, &now, &timeout);

        if (recv_fd >= 0) {
            fd_set readfds, exceptfds;
            FD_ZERO(&readfds);
            FD_ZERO(&exceptfds);
            FD_SET(recv_fd, &readfds);
            FD_SET(recv_fd, &exceptfds);
            sr = select(recv_fd+1, &readfds,0,&exceptfds, &timeout);
        } else {
            if (timercmp(&timeout, &pollinterval, >))
                timeout = pollinterval;
            sr = select(0,0,0,0, &timeout);
        }
        if (sr > 0) {
            recv_fd = -1;
        } else if (sr == 0) {
        } else if (sr == -1) {
            if (errno != EINTR) {
                fprintf(stderr, "migration child [%ld] exit wait select"
                        " failed unexpectedly: %s\n",
                        (long)migration_child, strerror(errno));
                break;
            }
        }
    }
    migration_child = 0;
}

static void migrate_domain(char *domain_spec, const char *rune,
                           const char *override_config_file)
{
    pid_t child = -1;
    int rc;
    int sendpipe[2], recvpipe[2];
    int send_fd, recv_fd;
    libxl_domain_suspend_info suspinfo;
    char *away_domname;
    char rc_buf;
    uint8_t *config_data;
    int config_len;

    save_domain_core_begin(domain_spec, override_config_file,
                           &config_data, &config_len);

    if (!config_len) {
        fprintf(stderr, "No config file stored for running domain and "
                "none supplied - cannot migrate.\n");
        exit(1);
    }

    MUST( libxl_pipe(&ctx, sendpipe) );
    MUST( libxl_pipe(&ctx, recvpipe) );

    child = libxl_fork(&ctx);
    if (child==-1) exit(1);

    if (!child) {
        dup2(sendpipe[0], 0);
        dup2(recvpipe[1], 1);
        close(sendpipe[0]); close(sendpipe[1]);
        close(recvpipe[0]); close(recvpipe[1]);
        execlp("sh","sh","-c",rune,(char*)0);
        perror("failed to exec sh");
        exit(-1);
    }

    close(sendpipe[0]);
    close(recvpipe[1]);
    send_fd = sendpipe[1];
    recv_fd = recvpipe[0];

    signal(SIGPIPE, SIG_IGN);
    /* if receiver dies, we get an error and can clean up
       rather than just dying */

    rc = migrate_read_fixedmessage(recv_fd, migrate_receiver_banner,
                                   sizeof(migrate_receiver_banner)-1,
                                   "banner", rune);
    if (rc) {
        close(send_fd);
        migration_child_report(child, recv_fd);
        exit(-rc);
    }

    save_domain_core_writeconfig(send_fd, "migration stream",
                                 config_data, config_len);

    xtl_stdiostream_adjust_flags(logger, XTL_STDIOSTREAM_HIDE_PROGRESS, 0);

    memset(&suspinfo, 0, sizeof(suspinfo));
    suspinfo.flags |= XL_SUSPEND_LIVE;
    rc = libxl_domain_suspend(&ctx, &suspinfo, domid, send_fd);
    if (rc) {
        fprintf(stderr, "migration sender: libxl_domain_suspend failed"
                " (rc=%d)\n", rc);
        goto failed_resume;
    }

    //fprintf(stderr, "migration sender: Transfer complete.\n");
    // Should only be printed when debugging as it's a bit messy with
    // progress indication.

    rc = migrate_read_fixedmessage(recv_fd, migrate_receiver_ready,
                                   sizeof(migrate_receiver_ready),
                                   "ready message", rune);
    if (rc) goto failed_resume;

    xtl_stdiostream_adjust_flags(logger, 0, XTL_STDIOSTREAM_HIDE_PROGRESS);

    /* right, at this point we are about give the destination
     * permission to rename and resume, so we must first rename the
     * domain away ourselves */

    fprintf(stderr, "migration sender: Target has acknowledged transfer.\n");

    if (common_domname) {
        if (asprintf(&away_domname, "%s--migratedaway", common_domname) < 0)
            goto failed_resume;
        rc = libxl_domain_rename(&ctx, domid,
                                 common_domname, away_domname, 0);
        if (rc) goto failed_resume;
    }

    /* point of no return - as soon as we have tried to say
     * "go" to the receiver, it's not safe to carry on.  We leave
     * the domain renamed to %s--migratedaway in case that's helpful.
     */

    fprintf(stderr, "migration sender: Giving target permission to start.\n");

    rc = libxl_write_exactly(&ctx, send_fd,
                             migrate_permission_to_go,
                             sizeof(migrate_permission_to_go),
                             "migration stream", "GO message");
    if (rc) goto failed_badly;

    rc = migrate_read_fixedmessage(recv_fd, migrate_report,
                                   sizeof(migrate_report),
                                   "success/failure report message", rune);
    if (rc) goto failed_badly;

    rc = libxl_read_exactly(&ctx, recv_fd,
                            &rc_buf, 1,
                            "migration ack stream", "success/failure status");
    if (rc) goto failed_badly;

    if (rc_buf) {
        fprintf(stderr, "migration sender: Target reports startup failure"
                " (status code %d).\n", rc_buf);

        rc = migrate_read_fixedmessage(recv_fd, migrate_permission_to_go,
                                       sizeof(migrate_permission_to_go),
                                       "permission for sender to resume",
                                       rune);
        if (rc) goto failed_badly;

        fprintf(stderr, "migration sender: Trying to resume at our end.\n");

        if (common_domname) {
            libxl_domain_rename(&ctx, domid,
                                away_domname, common_domname, 0);
        }
        rc = libxl_domain_resume(&ctx, domid);
        if (!rc) fprintf(stderr, "migration sender: Resumed OK.\n");

        fprintf(stderr, "Migration failed due to problems at target.\n");
        exit(-ERROR_FAIL);
    }

    fprintf(stderr, "migration sender: Target reports successful startup.\n");
    libxl_domain_destroy(&ctx, domid, 1); /* bang! */
    fprintf(stderr, "Migration successful.\n");
    exit(0);

 failed_resume:
    close(send_fd);
    migration_child_report(child, recv_fd);
    fprintf(stderr, "Migration failed, resuming at sender.\n");
    libxl_domain_resume(&ctx, domid);
    exit(-ERROR_FAIL);

 failed_badly:
    fprintf(stderr,
 "** Migration failed during final handshake **\n"
 "Domain state is now undefined !\n"
 "Please CHECK AT BOTH ENDS for running instances, before renaming and\n"
 " resuming at most one instance.  Two simultaneous instances of the domain\n"
 " would probably result in SEVERE DATA LOSS and it is now your\n"
 " responsibility to avoid that.  Sorry.\n");

    close(send_fd);
    migration_child_report(child, recv_fd);
    exit(-ERROR_BADFAIL);
}

static void core_dump_domain(const char *domain_spec, const char *filename)
{
    int rc;
    find_domain(domain_spec);
    rc=libxl_domain_core_dump(&ctx, domid, filename);
    if (rc) { fprintf(stderr,"core dump failed (rc=%d)\n.",rc);exit(-1); }
}

static void migrate_receive(int debug, int daemonize)
{
    int rc, rc2;
    char rc_buf;
    char *migration_domname;
    struct domain_create dom_info;

    signal(SIGPIPE, SIG_IGN);
    /* if we get SIGPIPE we'd rather just have it as an error */

    fprintf(stderr, "migration target: Ready to receive domain.\n");

    CHK_ERRNO( libxl_write_exactly(&ctx, 1,
                                   migrate_receiver_banner,
                                   sizeof(migrate_receiver_banner)-1,
                                   "migration ack stream",
                                   "banner") );

    memset(&dom_info, 0, sizeof(dom_info));
    dom_info.debug = debug;
    dom_info.daemonize = daemonize;
    dom_info.paused = 1;
    dom_info.restore_file = "incoming migration stream";
    dom_info.migration_domname_r = &migration_domname;

    rc = create_domain(&dom_info);
    if (rc < 0) {
        fprintf(stderr, "migration target: Domain creation failed"
                " (code %d).\n", rc);
        exit(-rc);
    }

    fprintf(stderr, "migration target: Transfer complete,"
            " requesting permission to start domain.\n");

    rc = libxl_write_exactly(&ctx, 1,
                             migrate_receiver_ready,
                             sizeof(migrate_receiver_ready),
                             "migration ack stream", "ready message");
    if (rc) exit(-rc);

    rc = migrate_read_fixedmessage(0, migrate_permission_to_go,
                                   sizeof(migrate_permission_to_go),
                                   "GO message", 0);
    if (rc) goto perhaps_destroy_notify_rc;

    fprintf(stderr, "migration target: Got permission, starting domain.\n");

    if (migration_domname) {
        rc = libxl_domain_rename(&ctx, domid,
                                 migration_domname, common_domname, 0);
        if (rc) goto perhaps_destroy_notify_rc;
    }

    rc = libxl_domain_unpause(&ctx, domid);
    if (rc) goto perhaps_destroy_notify_rc;

    fprintf(stderr, "migration target: Domain started successsfully.\n");
    rc = 0;

 perhaps_destroy_notify_rc:
    rc2 = libxl_write_exactly(&ctx, 1,
                              migrate_report, sizeof(migrate_report),
                              "migration ack stream",
                              "success/failure report");
    if (rc2) exit(-ERROR_BADFAIL);

    rc_buf = -rc;
    assert(!!rc_buf == !!rc);
    rc2 = libxl_write_exactly(&ctx, 1, &rc_buf, 1,
                              "migration ack stream",
                              "success/failure code");
    if (rc2) exit(-ERROR_BADFAIL);

    if (rc) {
        fprintf(stderr, "migration target: Failure, destroying our copy.\n");

        rc2 = libxl_domain_destroy(&ctx, domid, 1);
        if (rc2) {
            fprintf(stderr, "migration target: Failed to destroy our copy"
                    " (code %d).\n", rc2);
            exit(-ERROR_BADFAIL);
        }

        fprintf(stderr, "migration target: Cleanup OK, granting sender"
                " permission to resume.\n");

        rc2 = libxl_write_exactly(&ctx, 1,
                                  migrate_permission_to_go,
                                  sizeof(migrate_permission_to_go),
                                  "migration ack stream",
                                  "permission to sender to have domain back");
        if (rc2) exit(-ERROR_BADFAIL);
    }

    exit(0);
}

int main_restore(int argc, char **argv)
{
    char *checkpoint_file = NULL;
    char *config_file = NULL;
    struct domain_create dom_info;
    int paused = 0, debug = 0, daemonize = 1, console_autoconnect = 0;
    int opt, rc;

    while ((opt = getopt(argc, argv, "chpde")) != -1) {
        switch (opt) {
        case 'c':
            console_autoconnect = 1;
            break;
        case 'p':
            paused = 1;
            break;
        case 'd':
            debug = 1;
            break;
        case 'e':
            daemonize = 0;
            break;
        case 'h':
            help("restore");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }

    if (argc-optind == 1) {
        checkpoint_file = argv[optind];
    } else if (argc-optind == 2) {
        config_file = argv[optind];
        checkpoint_file = argv[optind + 1];
    } else {
        help("restore");
        return 2;
    }

    memset(&dom_info, 0, sizeof(dom_info));
    dom_info.debug = debug;
    dom_info.daemonize = daemonize;
    dom_info.paused = paused;
    dom_info.config_file = config_file;
    dom_info.restore_file = checkpoint_file;
    dom_info.migrate_fd = -1;
    dom_info.console_autoconnect = console_autoconnect;

    rc = create_domain(&dom_info);
    if (rc < 0)
        return -rc;

    return 0;
}

int main_migrate_receive(int argc, char **argv)
{
    int debug = 0, daemonize = 1;
    int opt;

    while ((opt = getopt(argc, argv, "hed")) != -1) {
        switch (opt) {
        case 'h':
            help("migrate-receive");
            return 2;
            break;
        case 'e':
            daemonize = 0;
            break;
        case 'd':
            debug = 1;
            break;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }

    if (argc-optind != 0) {
        help("migrate-receive");
        return 2;
    }
    migrate_receive(debug, daemonize);
    return 0;
}

int main_save(int argc, char **argv)
{
    char *filename = NULL, *p = NULL;
    const char *config_filename;
    int checkpoint = 0;
    int opt;

    while ((opt = getopt(argc, argv, "hc")) != -1) {
        switch (opt) {
        case 'c':
            checkpoint = 1;
            break;
        case 'h':
            help("save");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }

    if (argc-optind < 1 || argc-optind > 3) {
        help("save");
        return 2;
    }

    p = argv[optind];
    filename = argv[optind + 1];
    config_filename = argv[optind + 2];
    save_domain(p, filename, checkpoint, config_filename);
    return 0;
}

int main_migrate(int argc, char **argv)
{
    char *p = NULL;
    const char *config_filename = NULL;
    const char *ssh_command = "ssh";
    char *rune = NULL;
    char *host;
    int opt, daemonize = 1, debug = 0;

    while ((opt = getopt(argc, argv, "hC:s:ed")) != -1) {
        switch (opt) {
        case 'h':
            help("migrate");
            return 0;
        case 'C':
            config_filename = optarg;
            break;
        case 's':
            ssh_command = optarg;
            break;
        case 'e':
            daemonize = 0;
            break;
        case 'd':
            debug = 1;
            break;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }

    if (argc-optind < 2 || argc-optind > 2) {
        help("migrate");
        return 2;
    }

    p = argv[optind];
    host = argv[optind + 1];

    if (!ssh_command[0]) {
        rune= host;
    } else {
        if (asprintf(&rune, "exec %s %s xl migrate-receive%s%s",
                     ssh_command, host,
                     daemonize ? "" : " -e",
                     debug ? " -d" : "") < 0)
            return 1;
    }

    migrate_domain(p, rune, config_filename);
    return 0;
}

int main_dump_core(int argc, char **argv)
{
    int opt;
    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("dump-core");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }
    if ( argc-optind < 2 ) {
        help("dump-core");
        return 2;
    }
    core_dump_domain(argv[optind], argv[optind + 1]);
    return 0;
}

int main_pause(int argc, char **argv)
{
    int opt;
    char *p;
    

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("pause");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc) {
        help("pause");
        return 2;
    }

    p = argv[optind];

    pause_domain(p);
    return 0;
}

int main_unpause(int argc, char **argv)
{
    int opt;
    char *p;
    

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("unpause");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc) {
        help("unpause");
        return 2;
    }

    p = argv[optind];

    unpause_domain(p);
    return 0;
}

int main_destroy(int argc, char **argv)
{
    int opt;
    char *p;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("destroy");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc) {
        help("destroy");
        return 2;
    }

    p = argv[optind];

    destroy_domain(p);
    return 0;
}

int main_shutdown(int argc, char **argv)
{
    int opt;
    char *p;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("shutdown");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc) {
        help("shutdown");
        return 2;
    }

    p = argv[optind];

    shutdown_domain(p);
    return 0;
}

int main_reboot(int argc, char **argv)
{
    int opt;
    char *p;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("reboot");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc) {
        help("reboot");
        return 2;
    }

    p = argv[optind];

    reboot_domain(p);
    return 0;
}
int main_list(int argc, char **argv)
{
    int opt, verbose = 0;
    int details = 0;
    int option_index = 0;
    static struct option long_options[] = {
        {"long", 0, 0, 'l'},
        {"help", 0, 0, 'h'},
        {"verbose", 0, 0, 'v'},
        {0, 0, 0, 0}
    };

    libxl_dominfo info_buf;
    libxl_dominfo *info, *info_free=0;
    int nb_domain, rc;

    while (1) {
        opt = getopt_long(argc, argv, "lvh", long_options, &option_index);
        if (opt == -1)
            break;

        switch (opt) {
        case 'l':
            details = 1;
            break;
        case 'h':
            help("list");
            return 0;
        case 'v':
            verbose = 1;
            break;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }

    if (optind >= argc) {
        info = libxl_list_domain(&ctx, &nb_domain);
        if (!info) {
            fprintf(stderr, "libxl_domain_infolist failed.\n");
            return 1;
        }
        info_free = info;
    } else if (optind == argc-1) {
        find_domain(argv[optind]);
        rc = libxl_domain_info(&ctx, &info_buf, domid);
        if (rc == ERROR_INVAL) {
            fprintf(stderr, "Error: Domain \'%s\' does not exist.\n",
                argv[optind]);
            return -rc;
        }
        if (rc) {
            fprintf(stderr, "libxl_domain_info failed (code %d).\n", rc);
            return -rc;
        }
        info = &info_buf;
        nb_domain = 1;
    } else {
        help("list");
        return 2;
    }

    if (details)
        list_domains_details(info, nb_domain);
    else
        list_domains(verbose, info, nb_domain);

    free(info_free);

    return 0;
}

int main_list_vm(int argc, char **argv)
{
    int opt;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("list-vm");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }

    list_vm();
    return 0;
}

int main_create(int argc, char **argv)
{
    char *filename = NULL;
    char *p, extra_config[1024];
    struct domain_create dom_info;
    int paused = 0, debug = 0, daemonize = 1, console_autoconnect = 0,
        dryrun = 0, quiet = 0;
    int opt, rc;
    int option_index = 0;
    static struct option long_options[] = {
        {"dryrun", 0, 0, 'n'},
        {"quiet", 0, 0, 'q'},
        {"help", 0, 0, 'h'},
        {"defconfig", 1, 0, 'f'},
        {0, 0, 0, 0}
    };

    while (1) {
        opt = getopt_long(argc, argv, "hnqf:pcde", long_options, &option_index);
        if (opt == -1)
            break;

        switch (opt) {
        case 'f':
            filename = optarg;
            break;
        case 'p':
            paused = 1;
            break;
        case 'c':
            console_autoconnect = 1;
            break;
        case 'd':
            debug = 1;
            break;
        case 'e':
            daemonize = 0;
            break;
        case 'h':
            help("create");
            return 0;
        case 'n':
            dryrun = 1;
            break;
        case 'q':
            quiet = 1;
            break;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }

    extra_config[0] = '\0';
    for (p = extra_config; optind < argc; optind++) {
        if (strchr(argv[optind], '=') != NULL) {
            p += snprintf(p, sizeof(extra_config) - (p - extra_config),
                "%s\n", argv[optind]);
        } else if (!filename) {
            filename = argv[optind];
        } else {
            help("create");
            return 2;
        }
    }

    memset(&dom_info, 0, sizeof(dom_info));
    dom_info.debug = debug;
    dom_info.daemonize = daemonize;
    dom_info.paused = paused;
    dom_info.dryrun = dryrun;
    dom_info.quiet = quiet;
    dom_info.config_file = filename;
    dom_info.extra_config = extra_config;
    dom_info.migrate_fd = -1;
    dom_info.console_autoconnect = console_autoconnect;

    rc = create_domain(&dom_info);
    if (rc < 0)
        return -rc;

    return 0;
}

static void button_press(char *p, char *b)
{
    libxl_button button;

    find_domain(p);

    if (!strcmp(b, "power")) {
        button = POWER_BUTTON;
    } else if (!strcmp(b, "sleep")) {
        button = SLEEP_BUTTON;
    } else {
        fprintf(stderr, "%s is an invalid button identifier\n", b);
        exit(2);
    }

    libxl_button_press(&ctx, domid, button);
}

int main_button_press(int argc, char **argv)
{
    int opt;
    char *p;
    char *b;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("button-press");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc - 1) {
        help("button-press");
        return 2;
    }

    p = argv[optind];
    b = argv[optind + 1];

    button_press(p, b);
    return 0;
}

static void print_vcpuinfo(uint32_t tdomid,
                           const libxl_vcpuinfo *vcpuinfo,
                           uint32_t nr_cpus)
{
    int i, l;
    uint64_t *cpumap;
    uint64_t pcpumap;
    char *domname;

    /*      NAME  ID  VCPU */
    domname = libxl_domid_to_name(&ctx, tdomid);
    printf("%-32s %5u %5u",
           domname, tdomid, vcpuinfo->vcpuid);
    free(domname);
    if (!vcpuinfo->online) {
        /*      CPU STA */
        printf("%5c %3c%cp ", '-', '-', '-');
    } else {
        /*      CPU STA */
        printf("%5u %3c%c- ", vcpuinfo->cpu,
               vcpuinfo->running ? 'r' : '-',
               vcpuinfo->blocked ? 'b' : '-');
    }
    /*      TIM */
    printf("%9.1f  ", ((float)vcpuinfo->vcpu_time / 1e9));
    /* CPU AFFINITY */
    pcpumap = nr_cpus > 64 ? (uint64_t)-1 : ((1ULL << nr_cpus) - 1);
    for (cpumap = vcpuinfo->cpumap; nr_cpus; ++cpumap) {
        if (*cpumap < pcpumap) {
            break;
        }
        if (nr_cpus > 64) {
            pcpumap = -1;
            nr_cpus -= 64;
        } else {
            pcpumap = ((1 << nr_cpus) - 1);
            nr_cpus = 0;
        }
    }
    if (!nr_cpus) {
        printf("any cpu\n");
    } else {
        for (cpumap = vcpuinfo->cpumap; nr_cpus; ++cpumap) {
            pcpumap = *cpumap;
            for (i = 0; !(pcpumap & 1); ++i, pcpumap >>= 1)
                ;
            printf("%u", i);
            for (l = i, pcpumap = (pcpumap >> 1); (pcpumap & 1); ++i, pcpumap >>= 1)
                ;
            if (l < i) {
                printf("-%u", i);
            }
            for (++i; pcpumap; ++i, pcpumap >>= 1) {
                if (pcpumap & 1) {
                    printf(",%u", i);
                    for (l = i, pcpumap = (pcpumap >> 1); (pcpumap & 1); ++i, pcpumap >>= 1)
                        ;
                    if (l < i) {
                        printf("-%u", i);
                    }
                    ++i;
                }
            }
            printf("\n");
            nr_cpus = nr_cpus > 64 ? nr_cpus - 64 : 0;
        }
    }
}

static void print_domain_vcpuinfo(uint32_t domid, uint32_t nr_cpus)
{
    libxl_vcpuinfo *vcpuinfo;
    int i, nb_vcpu, nrcpus;

    vcpuinfo = libxl_list_vcpu(&ctx, domid, &nb_vcpu, &nrcpus);

    if (!vcpuinfo) {
        fprintf(stderr, "libxl_list_vcpu failed.\n");
        return;
    }

    for (i = 0; i < nb_vcpu; i++) {
        print_vcpuinfo(domid, &vcpuinfo[i], nr_cpus);
        libxl_vcpuinfo_destroy(&vcpuinfo[i]);
    }

    free(vcpuinfo);
}

static void vcpulist(int argc, char **argv)
{
    libxl_dominfo *dominfo;
    libxl_physinfo physinfo;
    int i, nb_domain;

    if (libxl_get_physinfo(&ctx, &physinfo) != 0) {
        fprintf(stderr, "libxl_physinfo failed.\n");
        goto vcpulist_out;
    }

    printf("%-32s %5s %5s %5s %5s %9s %s\n",
           "Name", "ID", "VCPU", "CPU", "State", "Time(s)", "CPU Affinity");
    if (!argc) {
        if (!(dominfo = libxl_list_domain(&ctx, &nb_domain))) {
            fprintf(stderr, "libxl_list_domain failed.\n");
            goto vcpulist_out;
        }

        for (i = 0; i<nb_domain; i++)
            print_domain_vcpuinfo(dominfo[i].domid, physinfo.nr_cpus);

        free(dominfo);

    } else {
        for (; argc > 0; ++argv, --argc) {
            if (domain_qualifier_to_domid(*argv, &domid, 0) < 0) {
                fprintf(stderr, "%s is an invalid domain identifier\n", *argv);
                goto vcpulist_out;
            }

            print_domain_vcpuinfo(domid, physinfo.nr_cpus);
        }
    }
  vcpulist_out:
    ;
}

int main_vcpulist(int argc, char **argv)
{
    int opt;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("vcpu-list");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    vcpulist(argc - optind, argv + optind);
    return 0;
}

static void vcpupin(char *d, const char *vcpu, char *cpu)
{
    libxl_vcpuinfo *vcpuinfo;
    libxl_physinfo physinfo;
    uint64_t *cpumap = NULL;

    uint32_t vcpuid, cpuida, cpuidb;
    char *endptr, *toka, *tokb;
    int i, nb_vcpu, cpusize;

    vcpuid = strtoul(vcpu, &endptr, 10);
    if (vcpu == endptr) {
        if (strcmp(vcpu, "all")) {
            fprintf(stderr, "Error: Invalid argument.\n");
            return;
        }
        vcpuid = -1;
    }

    find_domain(d);

    if (libxl_get_physinfo(&ctx, &physinfo) != 0) {
        fprintf(stderr, "libxl_get_physinfo failed.\n");
        goto vcpupin_out1;
    }

    cpumap = calloc(physinfo.max_cpu_id + 1, sizeof (uint64_t));
    if (!cpumap) {
        goto vcpupin_out1;
    }
    if (strcmp(cpu, "all")) {
        for (toka = strtok(cpu, ","), i = 0; toka; toka = strtok(NULL, ","), ++i) {
            cpuida = strtoul(toka, &endptr, 10);
            if (toka == endptr) {
                fprintf(stderr, "Error: Invalid argument.\n");
                goto vcpupin_out;
            }
            if (*endptr == '-') {
                tokb = endptr + 1;
                cpuidb = strtoul(tokb, &endptr, 10);
                if ((tokb == endptr) || (cpuida > cpuidb)) {
                    fprintf(stderr, "Error: Invalid argument.\n");
                    goto vcpupin_out;
                }
                while (cpuida <= cpuidb) {
                    cpumap[cpuida / 64] |= (1 << (cpuida % 64));
                    ++cpuida;
                }
            } else {
                cpumap[cpuida / 64] |= (1 << (cpuida % 64));
            }
        }
    }
    else {
        memset(cpumap, -1, sizeof (uint64_t) * (physinfo.max_cpu_id + 1));
    }

    if (vcpuid != -1) {
        if (libxl_set_vcpuaffinity(&ctx, domid, vcpuid,
                                   cpumap, physinfo.max_cpu_id + 1) == -1) {
            fprintf(stderr, "Could not set affinity for vcpu `%u'.\n", vcpuid);
        }
    }
    else {
        if (!(vcpuinfo = libxl_list_vcpu(&ctx, domid, &nb_vcpu, &cpusize))) {
            fprintf(stderr, "libxl_list_vcpu failed.\n");
            goto vcpupin_out;
        }
        for (; nb_vcpu > 0; --nb_vcpu, ++vcpuinfo) {
            if (libxl_set_vcpuaffinity(&ctx, domid, vcpuinfo->vcpuid,
                                       cpumap, physinfo.max_cpu_id + 1) == -1) {
                fprintf(stderr, "libxl_list_vcpu failed on vcpu `%u'.\n", vcpuinfo->vcpuid);
            }
        }
    }
  vcpupin_out1:
    free(cpumap);
  vcpupin_out:
    ;
}

int main_vcpupin(int argc, char **argv)
{
    int opt;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("vcpu-pin");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    if (optind != argc - 3) {
        help("vcpu-pin");
        return 2;
    }

    vcpupin(argv[optind], argv[optind+1] , argv[optind+2]);
    return 0;
}

static void vcpuset(char *d, char* nr_vcpus)
{
    char *endptr;
    unsigned int max_vcpus, i;
    uint32_t bitmask = 0;

    max_vcpus = strtoul(nr_vcpus, &endptr, 10);
    if (nr_vcpus == endptr) {
        fprintf(stderr, "Error: Invalid argument.\n");
        return;
    }

    find_domain(d);

    for (i = 0; i < max_vcpus; i++)
        bitmask |= 1 << i;

    if (libxl_set_vcpuonline(&ctx, domid, bitmask) < 0)
        fprintf(stderr, "libxl_set_vcpuonline failed domid=%d bitmask=%x\n", domid, bitmask);
}

int main_vcpuset(int argc, char **argv)
{
    int opt;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
        help("vcpu-set");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    if (optind >= argc - 1) {
        help("vcpu-set");
        return 2;
    }
    vcpuset(argv[optind], argv[optind+1]);
    return 0;
}

static void output_xeninfo(void)
{
    const libxl_version_info *info;
    int sched_id;

    if (!(info = libxl_get_version_info(&ctx))) {
        fprintf(stderr, "libxl_get_version_info failed.\n");
        return;
    }

    if ((sched_id = libxl_get_sched_id(&ctx)) < 0) {
        fprintf(stderr, "get_sched_id sysctl failed.\n");
        return;
    }

    printf("xen_major              : %d\n", info->xen_version_major);
    printf("xen_minor              : %d\n", info->xen_version_minor);
    printf("xen_extra              : %s\n", info->xen_version_extra);
    printf("xen_caps               : %s\n", info->capabilities);
    printf("xen_scheduler          : %s\n",
        sched_id == XEN_SCHEDULER_SEDF ? "sedf" :
        sched_id == XEN_SCHEDULER_CREDIT ? "credit" :
        sched_id == XEN_SCHEDULER_CREDIT2 ? "credit2" : "unknown");
    printf("xen_pagesize           : %lu\n", info->pagesize);
    printf("platform_params        : virt_start=0x%lx\n", info->virt_start);
    printf("xen_changeset          : %s\n", info->changeset);
    printf("xen_commandline        : %s\n", info->commandline);
    printf("cc_compiler            : %s\n", info->compiler);
    printf("cc_compile_by          : %s\n", info->compile_by);
    printf("cc_compile_domain      : %s\n", info->compile_domain);
    printf("cc_compile_date        : %s\n", info->compile_date);

    return;
}

static void output_nodeinfo(void)
{
    struct utsname utsbuf;

    if (uname(&utsbuf) < 0)
        return;

    printf("host                   : %s\n", utsbuf.nodename);
    printf("release                : %s\n", utsbuf.release);
    printf("version                : %s\n", utsbuf.version);
    printf("machine                : %s\n", utsbuf.machine);
}

static void output_physinfo(void)
{
    libxl_physinfo info;
    const libxl_version_info *vinfo;
    unsigned int i;

    if (libxl_get_physinfo(&ctx, &info) != 0) {
        fprintf(stderr, "libxl_physinfo failed.\n");
        return;
    }

    printf("nr_cpus                : %d\n", info.nr_cpus);
    printf("nr_nodes               : %d\n", info.nr_nodes);
    printf("cores_per_socket       : %d\n", info.cores_per_socket);
    printf("threads_per_core       : %d\n", info.threads_per_core);
    printf("cpu_mhz                : %d\n", info.cpu_khz / 1000);
    printf("hw_caps                : ");
    for (i = 0; i < 8; i++)
        printf("%08x%c", info.hw_cap[i], i < 7 ? ':' : '\n');
    printf("virt_caps              :");
    if (info.phys_cap & XEN_SYSCTL_PHYSCAP_hvm)
        printf(" hvm");
    if (info.phys_cap & XEN_SYSCTL_PHYSCAP_hvm_directio)
        printf(" hvm_directio");
    printf("\n");
    vinfo = libxl_get_version_info(&ctx);
    if (vinfo) {
        i = (1 << 20) / vinfo->pagesize;
        printf("total_memory           : %"PRIu64"\n", info.total_pages / i);
        printf("free_memory            : %"PRIu64"\n", info.free_pages / i);
    }

    return;
}

static void info(void)
{
    output_nodeinfo();

    output_physinfo();

    output_xeninfo();

    printf("xend_config_format     : 4\n");

    return;
}

int main_info(int argc, char **argv)
{
    int opt;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("info");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    info();
    return 0;
}

static int sched_credit_domain_get(
    int domid, libxl_sched_credit *scinfo)
{
    int rc;

    rc = libxl_sched_credit_domain_get(&ctx, domid, scinfo);
    if (rc)
        fprintf(stderr, "libxl_sched_credit_domain_get failed.\n");
    
    return rc;
}

static int sched_credit_domain_set(
    int domid, libxl_sched_credit *scinfo)
{
    int rc;

    rc = libxl_sched_credit_domain_set(&ctx, domid, scinfo);
    if (rc)
        fprintf(stderr, "libxl_sched_credit_domain_set failed.\n");

    return rc;
}

static void sched_credit_domain_output(
    int domid, libxl_sched_credit *scinfo)
{
    char *domname;
    domname = libxl_domid_to_name(&ctx, domid);
    printf("%-33s %4d %6d %4d\n",
        domname,
        domid,
        scinfo->weight,
        scinfo->cap);
    free(domname);
}

int main_sched_credit(int argc, char **argv)
{
    libxl_dominfo *info;
    libxl_sched_credit scinfo;
    int nb_domain, i;
    char *dom = NULL;
    int weight = 256, cap = 0, opt_w = 0, opt_c = 0;
    int opt, rc;

    while ((opt = getopt(argc, argv, "hd:w:c:")) != -1) {
        switch (opt) {
        case 'd':
            dom = optarg;
            break;
        case 'w':
            weight = strtol(optarg, NULL, 10);
            opt_w = 1;
            break;
        case 'c':
            cap = strtol(optarg, NULL, 10);
            opt_c = 1;
            break;
        case 'h':
            help("sched-credit");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    if (!dom && (opt_w || opt_c)) {
        fprintf(stderr, "Must specify a domain.\n");
        return 1;
    }

    if (!dom) { /* list all domain's credit scheduler info */
        info = libxl_list_domain(&ctx, &nb_domain);
        if (!info) {
            fprintf(stderr, "libxl_domain_infolist failed.\n");
            return 1;
        }

        printf("%-33s %4s %6s %4s\n", "Name", "ID", "Weight", "Cap");
        for (i = 0; i < nb_domain; i++) {
            rc = sched_credit_domain_get(info[i].domid, &scinfo);
            if (rc)
                return -rc;
            sched_credit_domain_output(info[i].domid, &scinfo);
        }
    } else {
        find_domain(dom);

        rc = sched_credit_domain_get(domid, &scinfo);
        if (rc)
            return -rc;

        if (!opt_w && !opt_c) { /* output credit scheduler info */
            printf("%-33s %4s %6s %4s\n", "Name", "ID", "Weight", "Cap");
            sched_credit_domain_output(domid, &scinfo);
        } else { /* set credit scheduler paramaters */
            if (opt_w)
                scinfo.weight = weight;
            if (opt_c)
                scinfo.cap = cap;
            rc = sched_credit_domain_set(domid, &scinfo);
            if (rc)
                return -rc;
        }
    }

    return 0;
}

int main_domid(int argc, char **argv)
{
    int opt;
    char *domname = NULL;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("domid");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    domname = argv[optind];
    if (!domname) {
        fprintf(stderr, "Must specify a domain name.\n\n");
        help("domid");
        return 1;
    }

    if (libxl_name_to_domid(&ctx, domname, &domid)) {
        fprintf(stderr, "Can't get domid of domain name '%s', maybe this domain does not exist.\n", domname);
        return 1;
    }

    printf("%d\n", domid);

    return 0;
}

int main_domname(int argc, char **argv)
{
    int opt;
    char *domname = NULL;
    char *endptr = NULL;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("domname");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    if (!argv[optind]) {
        fprintf(stderr, "Must specify a domain id.\n\n");
        help("domname");
        return 1;
    }
    domid = strtol(argv[optind], &endptr, 10);
    if (domid == 0 && !strcmp(endptr, argv[optind])) {
        /*no digits at all*/
        fprintf(stderr, "Invalid domain id.\n\n");
        return 1;
    }

    domname = libxl_domid_to_name(&ctx, domid);
    if (!domname) {
        fprintf(stderr, "Can't get domain name of domain id '%d', maybe this domain does not exist.\n", domid);
        return 1;
    }

    printf("%s\n", domname);
    free(domname);

    return 0;
}

int main_rename(int argc, char **argv)
{
    int opt;
    char *dom;
    char *new_name;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("rename");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    dom = argv[optind++];
    if (!dom || !argv[optind]) {
        fprintf(stderr, "'xl rename' requires 2 arguments.\n\n");
        help("rename");
        return 1;
    }

    find_domain(dom);
    new_name = argv[optind];

    if (libxl_domain_rename(&ctx, domid, common_domname, new_name, 0)) {
        fprintf(stderr, "Can't rename domain '%s'.\n", dom);
        return 1;
    }

    return 0;
}

int main_trigger(int argc, char **argv)
{
    int opt;
    char *trigger_name = NULL;
    char *endptr = NULL;
    char *dom = NULL;
    int vcpuid = 0;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("trigger");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    dom = argv[optind++];
    if (!dom || !argv[optind]) {
        fprintf(stderr, "'xl trigger' requires between 2 and 3 arguments.\n\n");
        help("trigger");
        return 1;
    }

    find_domain(dom);

    trigger_name = argv[optind++];

    if (argv[optind]) {
        vcpuid = strtol(argv[optind], &endptr, 10);
        if (vcpuid == 0 && !strcmp(endptr, argv[optind])) {
            fprintf(stderr, "Invalid vcpuid, using default vcpuid=0.\n\n");
        }
    }

    libxl_send_trigger(&ctx, domid, trigger_name, vcpuid);

    return 0;
}


int main_sysrq(int argc, char **argv)
{
    int opt;
    char *sysrq = NULL;
    char *dom = NULL;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("sysrq");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    dom = argv[optind++];
    if (!dom || !argv[optind]) {
        fprintf(stderr, "'xl sysrq' requires 2 arguments.\n\n");
        help("sysrq");
        return 1;
    }

    find_domain(dom);

    sysrq = argv[optind];

    if (sysrq[1] != '\0') {
        fprintf(stderr, "Invalid sysrq.\n\n");
        help("sysrq");
        return 1;
    }

    libxl_send_sysrq(&ctx, domid, sysrq[0]);

    return 0;
}

int main_debug_keys(int argc, char **argv)
{
    int opt;
    char *keys;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("debug-keys");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }
    if (optind >= argc) {
        help("debug-keys");
        return 2;
    }

    keys = argv[optind];

    if (libxl_send_debug_keys(&ctx, keys)) {
        fprintf(stderr, "cannot send debug keys: %s\n", keys);
        return 1;
    }

    return 0;
}

int main_dmesg(int argc, char **argv)
{
    unsigned int clear = 0;
    libxl_xen_console_reader *cr;
    char *line;
    int opt, ret = 1;

    while ((opt = getopt(argc, argv, "hc")) != -1) {
        switch (opt) {
        case 'c':
            clear = 1;
            break;
        case 'h':
            help("dmesg");
            return 0;
        default:
            fprintf(stderr, "option not supported\n");
            break;
        }
    }

    cr = libxl_xen_console_read_start(&ctx, clear);
    if (!cr)
        goto finish;

    while ((ret = libxl_xen_console_read_line(&ctx, cr, &line)) > 0)
        printf("%s", line);

finish:
    libxl_xen_console_read_finish(&ctx, cr);
    return ret;
}

int main_top(int argc, char **argv)
{
    int opt;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("top");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    return system("xentop");
}

int main_networkattach(int argc, char **argv)
{
    int opt;
    libxl_device_nic nic;
    char *endptr, *tok;
    int i;
    unsigned int val;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("network-attach");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }
    if ((argc-optind < 2) || (argc-optind > 11)) {
        help("network-attach");
        return 0;
    }

    if (domain_qualifier_to_domid(argv[optind], &domid, 0) < 0) {
        fprintf(stderr, "%s is an invalid domain identifier\n", argv[optind]);
        return 1;
    }
    init_nic_info(&nic, -1);
    for (argv += optind+1, argc -= optind+1; argc > 0; ++argv, --argc) {
        if (!strncmp("type=", *argv, 5)) {
            if (!strncmp("vif", (*argv) + 5, 4)) {
                nic.nictype = NICTYPE_VIF;
            } else if (!strncmp("ioemu", (*argv) + 5, 5)) {
                nic.nictype = NICTYPE_IOEMU;
            } else {
                fprintf(stderr, "Invalid parameter `type'.\n");
                return 1;
            }
        } else if (!strncmp("mac=", *argv, 4)) {
            tok = strtok((*argv) + 4, ":");
            for (i = 0; tok && i < 6; tok = strtok(NULL, ":"), ++i) {
                val = strtoul(tok, &endptr, 16);
                if ((tok == endptr) || (val > 255)) {
                    fprintf(stderr, "Invalid parameter `mac'.\n");
                    return 1;
                }
                nic.mac[i] = val;
            }
        } else if (!strncmp("bridge=", *argv, 7)) {
            nic.bridge = (*argv) + 7;
        } else if (!strncmp("ip=", *argv, 3)) {
            if (!inet_aton((*argv) + 3, &(nic.ip))) {
                fprintf(stderr, "Invalid parameter `ip'.\n");
                return 1;
            }
        } else if (!strncmp("script=", *argv, 6)) {
            nic.script = (*argv) + 6;
        } else if (!strncmp("backend=", *argv, 8)) {
            if(libxl_name_to_domid(&ctx, ((*argv) + 8), &val)) {
                fprintf(stderr, "Specified backend domain does not exist, defaulting to Dom0\n");
                val = 0;
            }
            nic.backend_domid = val;
        } else if (!strncmp("vifname=", *argv, 8)) {
            nic.ifname = (*argv) + 8;
        } else if (!strncmp("model=", *argv, 6)) {
            nic.model = (*argv) + 6;
        } else if (!strncmp("rate=", *argv, 5)) {
        } else if (!strncmp("accel=", *argv, 6)) {
        } else {
            fprintf(stderr, "unrecognized argument `%s'\n", *argv);
            return 1;
        }
    }
    nic.domid = domid;
    if (libxl_device_nic_add(&ctx, domid, &nic)) {
        fprintf(stderr, "libxl_device_nic_add failed.\n");
        return 1;
    }
    libxl_device_nic_destroy(&nic);
    return 0;
}

int main_networklist(int argc, char **argv)
{
    int opt;
    libxl_nicinfo *nics;
    unsigned int nb, i;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
            case 'h':
                help("network-list");
                return 0;
            default:
                fprintf(stderr, "option `%c' not supported.\n", opt);
                break;
        }
    }
    if (argc-optind < 1) {
        help("network-list");
        return 1;
    }

    /*      Idx  BE   MAC   Hdl  Sta  evch txr/rxr  BE-path */
    printf("%-3s %-2s %-17s %-6s %-5s %-6s %5s/%-5s %-30s\n",
           "Idx", "BE", "Mac Addr.", "handle", "state", "evt-ch", "tx-", "rx-ring-ref", "BE-path");
    for (argv += optind, argc -= optind; argc > 0; --argc, ++argv) {
        if (domain_qualifier_to_domid(*argv, &domid, 0) < 0) {
            fprintf(stderr, "%s is an invalid domain identifier\n", *argv);
            continue;
        }
        if (!(nics = libxl_list_nics(&ctx, domid, &nb))) {
            continue;
        }
        for (i = 0; i < nb; ++i) {
            /* Idx BE */
            printf("%-3d %-2d ", nics[i].devid, nics[i].backend_id);
            /* MAC */
            printf("%02x:%02x:%02x:%02x:%02x:%02x ",
                   nics[i].mac[0], nics[i].mac[1], nics[i].mac[2],
                   nics[i].mac[3], nics[i].mac[4], nics[i].mac[5]);
            /* Hdl  Sta  evch txr/rxr  BE-path */
            printf("%6d %5d %6d %5d/%-11d %-30s\n",
                   nics[i].devid, nics[i].state, nics[i].evtch,
                   nics[i].rref_tx, nics[i].rref_rx, nics[i].backend);
            libxl_nicinfo_destroy(&nics[i]);
        }
        free(nics);
    }
    return 0;
}

int main_networkdetach(int argc, char **argv)
{
    int opt;
    libxl_device_nic nic;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("network-detach");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }
    if (argc-optind != 2) {
        help("network-detach");
        return 0;
    }

    if (domain_qualifier_to_domid(argv[optind], &domid, 0) < 0) {
        fprintf(stderr, "%s is an invalid domain identifier\n", argv[optind]);
        return 1;
    }

    if (!strchr(argv[optind+1], ':')) {
        if (libxl_devid_to_device_nic(&ctx, domid, argv[optind+1], &nic)) {
            fprintf(stderr, "Unknown device %s.\n", argv[optind+1]);
            return 1;
        }
    } else {
        if (libxl_mac_to_device_nic(&ctx, domid, argv[optind+1], &nic)) {
            fprintf(stderr, "Unknown device %s.\n", argv[optind+1]);
            return 1;
        }
    }
    if (libxl_device_nic_del(&ctx, &nic, 1)) {
        fprintf(stderr, "libxl_device_nic_del failed.\n");
        return 1;
    }
    libxl_device_nic_destroy(&nic);
    return 0;
}

int main_blockattach(int argc, char **argv)
{
    int opt;
    char *tok;
    uint32_t fe_domid, be_domid = 0;
    libxl_device_disk disk = { 0 };

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("block-attach");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }
    if ((argc-optind < 3) || (argc-optind > 5)) {
        help("block-attach");
        return 0;
    }

    tok = strtok(argv[optind+1], ":");
    if (!strcmp(tok, "phy")) {
        disk.phystype = PHYSTYPE_PHY;
    } else if (!strcmp(tok, "file")) {
        disk.phystype = PHYSTYPE_FILE;
    } else if (!strcmp(tok, "tap")) {
        tok = strtok(NULL, ":");
        if (!strcmp(tok, "aio")) {
            disk.phystype = PHYSTYPE_AIO;
        } else if (!strcmp(tok, "vhd")) {
            disk.phystype = PHYSTYPE_VHD;
        } else if (!strcmp(tok, "qcow")) {
            disk.phystype = PHYSTYPE_QCOW;
        } else if (!strcmp(tok, "qcow2")) {
            disk.phystype = PHYSTYPE_QCOW2;
        } else {
            fprintf(stderr, "Error: `%s' is not a valid disk image.\n", tok);
            return 1;
        }
    } else {
        fprintf(stderr, "Error: `%s' is not a valid block device.\n", tok);
        return 1;
    }
    disk.physpath = strtok(NULL, "\0");
    if (!disk.physpath) {
        fprintf(stderr, "Error: missing path to disk image.\n");
        return 1;
    }
    disk.virtpath = argv[optind+2];
    disk.unpluggable = 1;
    disk.readwrite = ((argc-optind <= 3) || (argv[optind+3][0] == 'w'));

    if (domain_qualifier_to_domid(argv[optind], &fe_domid, 0) < 0) {
        fprintf(stderr, "%s is an invalid domain identifier\n", argv[optind]);
        return 1;
    }
    if (argc-optind == 5) {
        if (domain_qualifier_to_domid(argv[optind+4], &be_domid, 0) < 0) {
            fprintf(stderr, "%s is an invalid domain identifier\n", argv[optind+4]);
            return 1;
        }
    }
    disk.domid = fe_domid;
    disk.backend_domid = be_domid;

    if (libxl_device_disk_add(&ctx, fe_domid, &disk)) {
        fprintf(stderr, "libxl_device_disk_add failed.\n");
    }
    return 0;
}

int main_blocklist(int argc, char **argv)
{
    int opt;
    int i, nb;
    libxl_device_disk *disks;
    libxl_diskinfo diskinfo;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("block-list");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }
    if (argc-optind < 1) {
        help("block-list");
        return 0;
    }

    printf("%-5s %-3s %-6s %-5s %-6s %-8s %-30s\n",
           "Vdev", "BE", "handle", "state", "evt-ch", "ring-ref", "BE-path");
    for (argv += optind, argc -= optind; argc > 0; --argc, ++argv) {
        if (domain_qualifier_to_domid(*argv, &domid, 0) < 0) {
            fprintf(stderr, "%s is an invalid domain identifier\n", *argv);
            continue;
        }
        disks = libxl_device_disk_list(&ctx, domid, &nb);
        if (!disks) {
            continue;
        }
        for (i=0; i<nb; i++) {
            if (!libxl_device_disk_getinfo(&ctx, domid, &disks[i], &diskinfo)) {
                /*      Vdev BE   hdl  st   evch rref BE-path*/
                printf("%-5d %-3d %-6d %-5d %-6d %-8d %-30s\n",
                       diskinfo.devid, diskinfo.backend_id, diskinfo.frontend_id,
                       diskinfo.state, diskinfo.evtch, diskinfo.rref, diskinfo.backend);
                libxl_diskinfo_destroy(&diskinfo);
            }
            libxl_device_disk_destroy(&disks[i]);
        }
        free(disks);
    }
    return 0;
}

int main_blockdetach(int argc, char **argv)
{
    int opt;
    libxl_device_disk disk;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("block-detach");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }
    if (argc-optind != 2) {
        help("block-detach");
        return 0;
    }

    if (domain_qualifier_to_domid(argv[optind], &domid, 0) < 0) {
        fprintf(stderr, "%s is an invalid domain identifier\n", argv[optind]);
        return 1;
    }
    if (libxl_devid_to_device_disk(&ctx, domid, argv[optind+1], &disk)) {
        fprintf(stderr, "Error: Device %s not connected.\n", argv[optind+1]);
        return 1;
    }
    if (libxl_device_disk_del(&ctx, &disk, 1)) {
        fprintf(stderr, "libxl_device_disk_del failed.\n");
    }
    return 0;
}

int main_network2attach(int argc, char **argv)
{
    int opt;
    char *tok, *endptr;
    char *back_dom = NULL;
    uint32_t domid, back_domid;
    unsigned int val, i;
    libxl_device_net2 net2;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("network2-attach");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }
    if ((argc-optind < 1) || (argc-optind > 10)) {
        help("network2-attach");
        return 0;
    }

    if (domain_qualifier_to_domid(argv[optind], &domid, 0) < 0) {
        fprintf(stderr, "%s is an invalid domain identifier\n", argv[optind]);
        return 1;
    }
    init_net2_info(&net2, -1);
    for (argv += optind+1, argc -= optind+1; argc > 0; --argc, ++argv) {
        if (!strncmp("front_mac=", *argv, 10)) {
            tok = strtok((*argv) + 10, ":");
            for (i = 0; tok && i < 6; tok = strtok(NULL, ":"), ++i) {
                val = strtoul(tok, &endptr, 16);
                if ((tok == endptr) || (val > 255)) {
                    fprintf(stderr, "Invalid parameter `front_mac'.\n");
                    return 1;
                }
                net2.front_mac[i] = val;
            }
        } else if (!strncmp("back_mac=", *argv, 9)) {
            tok = strtok((*argv) + 10, ":");
            for (i = 0; tok && i < 6; tok = strtok(NULL, ":"), ++i) {
                val = strtoul(tok, &endptr, 16);
                if ((tok == endptr) || (val > 255)) {
                    fprintf(stderr, "Invalid parameter back_mac=%s.\n", *argv + 9);
                    return 1;
                }
                net2.back_mac[i] = val;
            }
        } else if (!strncmp("backend=", *argv, 8)) {
            back_dom = *argv;
        } else if (!strncmp("trusted=", *argv, 8)) {
            net2.trusted = (*((*argv) + 8) == '1');
        } else if (!strncmp("back_trusted=", *argv, 13)) {
            net2.back_trusted = (*((*argv) + 13) == '1');
        } else if (!strncmp("bridge=", *argv, 7)) {
            net2.bridge = *argv + 13;
        } else if (!strncmp("filter_mac=", *argv, 11)) {
            net2.filter_mac = (*((*argv) + 11) == '1');
        } else if (!strncmp("front_filter_mac=", *argv, 17)) {
            net2.front_filter_mac = (*((*argv) + 17) == '1');
        } else if (!strncmp("pdev=", *argv, 5)) {
            val = strtoul(*argv + 5, &endptr, 10);
            if (endptr == (*argv + 5)) {
                fprintf(stderr, "Invalid parameter pdev=%s.\n", *argv + 5);
                return 1;
            }
            net2.pdev = val;
        } else if (!strncmp("max_bypasses=", *argv, 13)) {
            val = strtoul(*argv + 13, &endptr, 10);
            if (endptr == (*argv + 13)) {
                fprintf(stderr, "Invalid parameter max_bypasses=%s.\n", *argv + 13);
                return 1;
            }
            net2.max_bypasses = val;
        } else {
            fprintf(stderr, "unrecognized argument `%s'\n", *argv);
            return 1;
        }
    }

    if (back_dom) {
        if (domain_qualifier_to_domid(back_dom, &back_domid, 0) < 0) {
            fprintf(stderr, "%s is an invalid domain identifier\n", back_dom);
            return 1;
        }
    }
    net2.domid = domid;
    net2.backend_domid = back_domid;
    if (libxl_device_net2_add(&ctx, domid, &net2)) {
        fprintf(stderr, "libxl_device_net2_add failed.\n");
    }
    return 0;
}

int main_network2list(int argc, char **argv)
{
    int opt;
    unsigned int nb;
    libxl_net2info *net2s;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("network2-list");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }
    if (argc - optind < 1) {
        help("network2-list");
        return 0;
    }

    printf("%-3s %-2s %-5s %-17s %-17s %-7s %-6s %-30s\n",
           "Idx", "BE", "state", "Mac Addr.", "Remote Mac Addr.",
           "trusted", "filter", "backend");
    for (argv += optind, argc -=optind; argc > 0; --argc, ++argv) {
        if (domain_qualifier_to_domid(*argv, &domid, 0) < 0) {
            fprintf(stderr, "%s is an invalid domain identifier\n", *argv);
            continue;
        }
        if ((net2s = libxl_device_net2_list(&ctx, domid, &nb))) {
            for (; nb > 0; --nb, ++net2s) {
                printf("%3d %2d %5d ", net2s->devid, net2s->backend_id, net2s->state);
                printf("%02x:%02x:%02x:%02x:%02x:%02x ",
                       net2s->mac[0], net2s->mac[1], net2s->mac[2],
                       net2s->mac[3], net2s->mac[4], net2s->mac[5]);
                printf("%02x:%02x:%02x:%02x:%02x:%02x ",
                       net2s->back_mac[0], net2s->back_mac[1], net2s->back_mac[2],
                       net2s->back_mac[3], net2s->back_mac[4], net2s->back_mac[5]);
                printf("%-7d %-6d %-30s\n", net2s->trusted, net2s->filter_mac, net2s->backend);
            }
        }
    }
    return 0;
}

int main_network2detach(int argc, char **argv)
{
    int opt;
    libxl_device_net2 net2;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("network2-detach");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }
    if (argc-optind != 2) {
        help("network2-detach");
        return 0;
    }

    if (domain_qualifier_to_domid(argv[optind], &domid, 0) < 0) {
        fprintf(stderr, "%s is an invalid domain identifier\n", argv[optind]);
        return 1;
    }
    if (libxl_devid_to_device_net2(&ctx, domid, argv[optind+1], &net2)) {
        fprintf(stderr, "Error: Device %s not connected.\n", argv[optind+1]);
        return 1;
    }
    if (libxl_device_net2_del(&ctx, &net2, 1)) {
        fprintf(stderr, "libxl_device_net2_del failed.\n");
        return 1;
    }
    return 0;
}

static char *uptime_to_string(unsigned long time, int short_mode)
{
    int sec, min, hour, day;
    char *time_string;
    int ret;

    day = (int)(time / 86400);
    time -= (day * 86400);
    hour = (int)(time / 3600);
    time -= (hour * 3600);
    min = (int)(time / 60);
    time -= (min * 60);
    sec = time;

    if (short_mode)
        if (day > 1)
            ret = asprintf(&time_string, "%d days, %2d:%02d", day, hour, min);
        else if (day == 1)
            ret = asprintf(&time_string, "%d day, %2d:%02d", day, hour, min);
        else
            ret = asprintf(&time_string, "%2d:%02d", hour, min);
    else
        if (day > 1)
            ret = asprintf(&time_string, "%d days, %2d:%02d:%02d", day, hour, min, sec);
        else if (day == 1)
            ret = asprintf(&time_string, "%d day, %2d:%02d:%02d", day, hour, min, sec);
        else
            ret = asprintf(&time_string, "%2d:%02d:%02d", hour, min, sec);

    if (ret < 0)
        return NULL;
    return time_string;
}

static char *current_time_to_string(time_t now)
{
    char now_str[100];
    struct tm *tmp;

    tmp = localtime(&now);
    if (tmp == NULL) {
        fprintf(stderr, "Get localtime error");
        exit(-1);
    }
    if (strftime(now_str, sizeof(now_str), "%H:%M:%S", tmp) == 0) {
        fprintf(stderr, "strftime returned 0");
        exit(-1);
    }
    return strdup(now_str);
}

static void print_dom0_uptime(int short_mode, time_t now)
{
    int fd;
    char buf[512];
    uint32_t uptime = 0;
    char *uptime_str = NULL;
    char *now_str = NULL;
    char *domname;

    fd = open("/proc/uptime", O_RDONLY);
    if (fd == -1)
        goto err;

    if (read(fd, buf, sizeof(buf)) == -1) {
        close(fd);
        goto err;
    }
    close(fd);

    strtok(buf, " ");
    uptime = strtoul(buf, NULL, 10);

    domname = libxl_domid_to_name(&ctx, 0);
    if (short_mode)
    {
        now_str = current_time_to_string(now);
        uptime_str = uptime_to_string(uptime, 1);
        printf(" %s up %s, %s (%d)\n", now_str, uptime_str,
               domname, 0);
    }
    else
    {
        now_str = NULL;
        uptime_str = uptime_to_string(uptime, 0);
        printf("%-33s %4d %s\n", domname,
               0, uptime_str);
    }

    free(now_str);
    free(uptime_str);
    free(domname);
    return;
err:
    fprintf(stderr, "Can not get Dom0 uptime.\n");
    exit(-1);
}

static void print_domU_uptime(uint32_t domuid, int short_mode, time_t now)
{
    uint32_t s_time = 0;
    uint32_t uptime = 0;
    char *uptime_str = NULL;
    char *now_str = NULL;
    char *domname;

    s_time = libxl_vm_get_start_time(&ctx, domuid);
    if (s_time == -1)
        return;
    uptime = now - s_time;
    domname = libxl_domid_to_name(&ctx, domuid);
    if (short_mode)
    {
        now_str = current_time_to_string(now);
        uptime_str = uptime_to_string(uptime, 1);
        printf(" %s up %s, %s (%d)\n", now_str, uptime_str,
               domname, domuid);
    }
    else
    {
        now_str = NULL;
        uptime_str = uptime_to_string(uptime, 0);
        printf("%-33s %4d %s\n", domname,
               domuid, uptime_str);
    }

    free(domname);
    free(now_str);
    free(uptime_str);
    return;
}

static void print_uptime(int short_mode, uint32_t doms[], int nb_doms)
{
    libxl_vminfo *info;
    time_t now;
    int nb_vm, i;

    now = time(NULL);

    if (!short_mode)
        printf("%-33s %4s %s\n", "Name", "ID", "Uptime");

    if (nb_doms == 0) {
        print_dom0_uptime(short_mode, now);
        info = libxl_list_vm(&ctx, &nb_vm);
        for (i = 0; i < nb_vm; i++)
            print_domU_uptime(info[i].domid, short_mode, now);
    } else {
        for (i = 0; i < nb_doms; i++) {
            if (doms[i] == 0)
                print_dom0_uptime(short_mode, now);
            else
                print_domU_uptime(doms[i], short_mode, now);
        }
    }
}

int main_uptime(int argc, char **argv)
{
    char *dom = NULL;
    int short_mode = 0;
    uint32_t domains[100];
    int nb_doms = 0;
    int opt;

    while ((opt = getopt(argc, argv, "hs")) != -1) {
        switch (opt) {
        case 's':
            short_mode = 1;
            break;
        case 'h':
            help("uptime");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    for (;(dom = argv[optind]) != NULL; nb_doms++,optind++) {
        find_domain(dom);
        domains[nb_doms] = domid;
    }

    print_uptime(short_mode, domains, nb_doms);

    return 0;
}

int main_tmem_list(int argc, char **argv)
{
    char *dom = NULL;
    char *buf = NULL;
    int use_long = 0;
    int all = 0;
    int opt;

    while ((opt = getopt(argc, argv, "alh")) != -1) {
        switch (opt) {
        case 'l':
            use_long = 1;
            break;
        case 'a':
            all = 1;
            break;
        case 'h':
            help("tmem-list");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    dom = argv[optind];
    if (!dom && all == 0) {
        fprintf(stderr, "You must specify -a or a domain id.\n\n");
        help("tmem-list");
        return 1;
    }

    if (all)
        domid = -1;
    else
        find_domain(dom);

    buf = libxl_tmem_list(&ctx, domid, use_long);
    if (buf == NULL)
        return -1;

    printf("%s\n", buf);
    free(buf);
    return 0;
}

int main_tmem_freeze(int argc, char **argv)
{
    char *dom = NULL;
    int all = 0;
    int opt;

    while ((opt = getopt(argc, argv, "ah")) != -1) {
        switch (opt) {
        case 'a':
            all = 1;
            break;
        case 'h':
            help("tmem-freeze");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    dom = argv[optind];
    if (!dom && all == 0) {
        fprintf(stderr, "You must specify -a or a domain id.\n\n");
        help("tmem-freeze");
        return 1;
    }

    if (all)
        domid = -1;
    else
        find_domain(dom);

    libxl_tmem_freeze(&ctx, domid);
    return 0;
}

int main_tmem_destroy(int argc, char **argv)
{
    char *dom = NULL;
    int all = 0;
    int opt;

    while ((opt = getopt(argc, argv, "ah")) != -1) {
        switch (opt) {
        case 'a':
            all = 1;
            break;
        case 'h':
            help("tmem-destroy");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    dom = argv[optind];
    if (!dom && all == 0) {
        fprintf(stderr, "You must specify -a or a domain id.\n\n");
        help("tmem-destroy");
        return 1;
    }

    if (all)
        domid = -1;
    else
        find_domain(dom);

    libxl_tmem_destroy(&ctx, domid);
    return 0;
}

int main_tmem_thaw(int argc, char **argv)
{
    char *dom = NULL;
    int all = 0;
    int opt;

    while ((opt = getopt(argc, argv, "ah")) != -1) {
        switch (opt) {
        case 'a':
            all = 1;
            break;
        case 'h':
            help("tmem-thaw");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    dom = argv[optind];
    if (!dom && all == 0) {
        fprintf(stderr, "You must specify -a or a domain id.\n\n");
        help("tmem-thaw");
        return 1;
    }

    if (all)
        domid = -1;
    else
        find_domain(dom);

    libxl_tmem_thaw(&ctx, domid);
    return 0;
}

int main_tmem_set(int argc, char **argv)
{
    char *dom = NULL;
    uint32_t weight = 0, cap = 0, compress = 0;
    int opt_w = 0, opt_c = 0, opt_p = 0;
    int all = 0;
    int opt;

    while ((opt = getopt(argc, argv, "aw:c:p:h")) != -1) {
        switch (opt) {
        case 'a':
            all = 1;
            break;
        case 'w':
            weight = strtol(optarg, NULL, 10);
            opt_w = 1;
            break;
        case 'c':
            cap = strtol(optarg, NULL, 10);
            opt_c = 1;
            break;
        case 'p':
            compress = strtol(optarg, NULL, 10);
            opt_p = 1;
            break;
        case 'h':
            help("tmem-set");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    dom = argv[optind];
    if (!dom && all == 0) {
        fprintf(stderr, "You must specify -a or a domain id.\n\n");
        help("tmem-set");
        return 1;
    }

    if (all)
        domid = -1;
    else
        find_domain(dom);

    if (!opt_w && !opt_c && !opt_p) {
        fprintf(stderr, "No set value specified.\n\n");
        help("tmem-set");
        return 1;
    }

    if (opt_w)
        libxl_tmem_set(&ctx, domid, "weight", weight);
    if (opt_c)
        libxl_tmem_set(&ctx, domid, "cap", cap);
    if (opt_p)
        libxl_tmem_set(&ctx, domid, "compress", compress);

    return 0;
}

int main_tmem_shared_auth(int argc, char **argv)
{
    char *autharg = NULL;
    char *endptr = NULL;
    char *dom = NULL;
    char *uuid = NULL;
    int auth = -1;
    int all = 0;
    int opt;

    while ((opt = getopt(argc, argv, "au:A:h")) != -1) {
        switch (opt) {
        case 'a':
            all = 1;
            break;
        case 'u':
            uuid = optarg;
            break;
        case 'A':
            autharg = optarg;
            break;
        case 'h':
            help("tmem-shared-auth");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    dom = argv[optind];
    if (!dom && all == 0) {
        fprintf(stderr, "You must specify -a or a domain id.\n\n");
        help("tmem-shared-auth");
        return 1;
    }

    if (all)
        domid = -1;
    else
        find_domain(dom);

    if (uuid == NULL || autharg == NULL) {
        fprintf(stderr, "No uuid or auth specified.\n\n");
        help("tmem-shared-auth");
        return 1;
    }

    auth = strtol(autharg, &endptr, 10);
    if (*endptr != '\0') {
        fprintf(stderr, "Invalid auth, valid auth are <0|1>.\n\n");
        return 1;
    }

    libxl_tmem_shared_auth(&ctx, domid, uuid, auth);

    return 0;
}

int main_tmem_freeable(int argc, char **argv)
{
    int opt;
    int mb;

    while ((opt = getopt(argc, argv, "h")) != -1) {
        switch (opt) {
        case 'h':
            help("tmem-freeable");
            return 0;
        default:
            fprintf(stderr, "option `%c' not supported.\n", opt);
            break;
        }
    }

    mb = libxl_tmem_freeable(&ctx);
    if (mb == -1)
        return -1;

    printf("%d\n", mb);
    return 0;
}