Archipelago » qemu

/*

 * Human Monitor Interface

 *

 * Copyright IBM, Corp. 2011

 *

 * Authors:

 *  Anthony Liguori   <aliguori@us.ibm.com>

 *

 * This work is licensed under the terms of the GNU GPL, version 2.  See

 * the COPYING file in the top-level directory.

 *

 * Contributions after 2012-01-13 are licensed under the terms of the

 * GNU GPL, version 2 or (at your option) any later version.

 */

#include "hmp.h"

#include "net/net.h"

#include "sysemu/char.h"

#include "qemu/option.h"

#include "qemu/timer.h"

#include "qmp-commands.h"

#include "qemu/sockets.h"

#include "monitor/monitor.h"

#include "ui/console.h"

#include "block/qapi.h"

#include "qemu-io.h"

static void hmp_handle_error(Monitor *mon, Error **errp)

{

    if (error_is_set(errp)) {

        monitor_printf(mon, "%s\n", error_get_pretty(*errp));

        error_free(*errp);

    }

}

void hmp_info_name(Monitor *mon, const QDict *qdict)

{

    NameInfo *info;

    info = qmp_query_name(NULL);

    if (info->has_name) {

        monitor_printf(mon, "%s\n", info->name);

    }

    qapi_free_NameInfo(info);

}

void hmp_info_version(Monitor *mon, const QDict *qdict)

{

    VersionInfo *info;

    info = qmp_query_version(NULL);

    monitor_printf(mon, "%" PRId64 ".%" PRId64 ".%" PRId64 "%s\n",

                   info->qemu.major, info->qemu.minor, info->qemu.micro,

                   info->package);

    qapi_free_VersionInfo(info);

}

void hmp_info_kvm(Monitor *mon, const QDict *qdict)

{

    KvmInfo *info;

    info = qmp_query_kvm(NULL);

    monitor_printf(mon, "kvm support: ");

    if (info->present) {

        monitor_printf(mon, "%s\n", info->enabled ? "enabled" : "disabled");

    } else {

        monitor_printf(mon, "not compiled\n");

    }

    qapi_free_KvmInfo(info);

}

void hmp_info_status(Monitor *mon, const QDict *qdict)

{

    StatusInfo *info;

    info = qmp_query_status(NULL);

    monitor_printf(mon, "VM status: %s%s",

                   info->running ? "running" : "paused",

                   info->singlestep ? " (single step mode)" : "");

    if (!info->running && info->status != RUN_STATE_PAUSED) {

        monitor_printf(mon, " (%s)", RunState_lookup[info->status]);

    }

    monitor_printf(mon, "\n");

    qapi_free_StatusInfo(info);

}

void hmp_info_uuid(Monitor *mon, const QDict *qdict)

{

    UuidInfo *info;

    info = qmp_query_uuid(NULL);

    monitor_printf(mon, "%s\n", info->UUID);

    qapi_free_UuidInfo(info);

}

void hmp_info_chardev(Monitor *mon, const QDict *qdict)

{

    ChardevInfoList *char_info, *info;

    char_info = qmp_query_chardev(NULL);

    for (info = char_info; info; info = info->next) {

        monitor_printf(mon, "%s: filename=%s\n", info->value->label,

                                                 info->value->filename);

    }

    qapi_free_ChardevInfoList(char_info);

}

void hmp_info_mice(Monitor *mon, const QDict *qdict)

{

    MouseInfoList *mice_list, *mouse;

    mice_list = qmp_query_mice(NULL);

    if (!mice_list) {

        monitor_printf(mon, "No mouse devices connected\n");

        return;

    }

    for (mouse = mice_list; mouse; mouse = mouse->next) {

        monitor_printf(mon, "%c Mouse #%" PRId64 ": %s%s\n",

                       mouse->value->current ? '*' : ' ',

                       mouse->value->index, mouse->value->name,

                       mouse->value->absolute ? " (absolute)" : "");

    }

    qapi_free_MouseInfoList(mice_list);

}

void hmp_info_migrate(Monitor *mon, const QDict *qdict)

{

    MigrationInfo *info;

    MigrationCapabilityStatusList *caps, *cap;

    info = qmp_query_migrate(NULL);

    caps = qmp_query_migrate_capabilities(NULL);

    /* do not display parameters during setup */

    if (info->has_status && caps) {

        monitor_printf(mon, "capabilities: ");

        for (cap = caps; cap; cap = cap->next) {

            monitor_printf(mon, "%s: %s ",

                           MigrationCapability_lookup[cap->value->capability],

                           cap->value->state ? "on" : "off");

        }

        monitor_printf(mon, "\n");

    }

    if (info->has_status) {

        monitor_printf(mon, "Migration status: %s\n", info->status);

        monitor_printf(mon, "total time: %" PRIu64 " milliseconds\n",

                       info->total_time);

        if (info->has_expected_downtime) {

            monitor_printf(mon, "expected downtime: %" PRIu64 " milliseconds\n",

                           info->expected_downtime);

        }

        if (info->has_downtime) {

            monitor_printf(mon, "downtime: %" PRIu64 " milliseconds\n",

                           info->downtime);

        }

        if (info->has_setup_time) {

            monitor_printf(mon, "setup: %" PRIu64 " milliseconds\n",

                           info->setup_time);

        }

    }

    if (info->has_ram) {

        monitor_printf(mon, "transferred ram: %" PRIu64 " kbytes\n",

                       info->ram->transferred >> 10);

        monitor_printf(mon, "throughput: %0.2f mbps\n",

                       info->ram->mbps);

        monitor_printf(mon, "remaining ram: %" PRIu64 " kbytes\n",

                       info->ram->remaining >> 10);

        monitor_printf(mon, "total ram: %" PRIu64 " kbytes\n",

                       info->ram->total >> 10);

        monitor_printf(mon, "duplicate: %" PRIu64 " pages\n",

                       info->ram->duplicate);

        monitor_printf(mon, "skipped: %" PRIu64 " pages\n",

                       info->ram->skipped);

        monitor_printf(mon, "normal: %" PRIu64 " pages\n",

                       info->ram->normal);

        monitor_printf(mon, "normal bytes: %" PRIu64 " kbytes\n",

                       info->ram->normal_bytes >> 10);

        if (info->ram->dirty_pages_rate) {

            monitor_printf(mon, "dirty pages rate: %" PRIu64 " pages\n",

                           info->ram->dirty_pages_rate);

        }

    }

    if (info->has_disk) {

        monitor_printf(mon, "transferred disk: %" PRIu64 " kbytes\n",

                       info->disk->transferred >> 10);

        monitor_printf(mon, "remaining disk: %" PRIu64 " kbytes\n",

                       info->disk->remaining >> 10);

        monitor_printf(mon, "total disk: %" PRIu64 " kbytes\n",

                       info->disk->total >> 10);

    }

    if (info->has_xbzrle_cache) {

        monitor_printf(mon, "cache size: %" PRIu64 " bytes\n",

                       info->xbzrle_cache->cache_size);

        monitor_printf(mon, "xbzrle transferred: %" PRIu64 " kbytes\n",

                       info->xbzrle_cache->bytes >> 10);

        monitor_printf(mon, "xbzrle pages: %" PRIu64 " pages\n",

                       info->xbzrle_cache->pages);

        monitor_printf(mon, "xbzrle cache miss: %" PRIu64 "\n",

                       info->xbzrle_cache->cache_miss);

        monitor_printf(mon, "xbzrle overflow : %" PRIu64 "\n",

                       info->xbzrle_cache->overflow);

    }

    qapi_free_MigrationInfo(info);

    qapi_free_MigrationCapabilityStatusList(caps);

}

void hmp_info_migrate_capabilities(Monitor *mon, const QDict *qdict)

{

    MigrationCapabilityStatusList *caps, *cap;

    caps = qmp_query_migrate_capabilities(NULL);

    if (caps) {

        monitor_printf(mon, "capabilities: ");

        for (cap = caps; cap; cap = cap->next) {

            monitor_printf(mon, "%s: %s ",

                           MigrationCapability_lookup[cap->value->capability],

                           cap->value->state ? "on" : "off");

        }

        monitor_printf(mon, "\n");

    }

    qapi_free_MigrationCapabilityStatusList(caps);

}

void hmp_info_migrate_cache_size(Monitor *mon, const QDict *qdict)

{

    monitor_printf(mon, "xbzrel cache size: %" PRId64 " kbytes\n",

                   qmp_query_migrate_cache_size(NULL) >> 10);

}

void hmp_info_cpus(Monitor *mon, const QDict *qdict)

{

    CpuInfoList *cpu_list, *cpu;

    cpu_list = qmp_query_cpus(NULL);

    for (cpu = cpu_list; cpu; cpu = cpu->next) {

        int active = ' ';

        if (cpu->value->CPU == monitor_get_cpu_index()) {

            active = '*';

        }

        monitor_printf(mon, "%c CPU #%" PRId64 ":", active, cpu->value->CPU);

        if (cpu->value->has_pc) {

            monitor_printf(mon, " pc=0x%016" PRIx64, cpu->value->pc);

        }

        if (cpu->value->has_nip) {

            monitor_printf(mon, " nip=0x%016" PRIx64, cpu->value->nip);

        }

        if (cpu->value->has_npc) {

            monitor_printf(mon, " npc=0x%016" PRIx64, cpu->value->npc);

        }

        if (cpu->value->has_PC) {

            monitor_printf(mon, " PC=0x%016" PRIx64, cpu->value->PC);

        }

        if (cpu->value->halted) {

            monitor_printf(mon, " (halted)");

        }

        monitor_printf(mon, " thread_id=%" PRId64 "\n", cpu->value->thread_id);

    }

    qapi_free_CpuInfoList(cpu_list);

}

void hmp_info_block(Monitor *mon, const QDict *qdict)

{

    BlockInfoList *block_list, *info;

    ImageInfo *image_info;

    const char *device = qdict_get_try_str(qdict, "device");

    bool verbose = qdict_get_try_bool(qdict, "verbose", 0);

    block_list = qmp_query_block(NULL);

    for (info = block_list; info; info = info->next) {

        if (device && strcmp(device, info->value->device)) {

            continue;

        }

        if (info != block_list) {

            monitor_printf(mon, "\n");

        }

        monitor_printf(mon, "%s", info->value->device);

        if (info->value->has_inserted) {

            monitor_printf(mon, ": %s (%s%s%s)\n",

                           info->value->inserted->file,

                           info->value->inserted->drv,

                           info->value->inserted->ro ? ", read-only" : "",

                           info->value->inserted->encrypted ? ", encrypted" : "");

        } else {

            monitor_printf(mon, ": [not inserted]\n");

        }

        if (info->value->has_io_status && info->value->io_status != BLOCK_DEVICE_IO_STATUS_OK) {

            monitor_printf(mon, "    I/O status:       %s\n",

                           BlockDeviceIoStatus_lookup[info->value->io_status]);

        }

        if (info->value->removable) {

            monitor_printf(mon, "    Removable device: %slocked, tray %s\n",

                           info->value->locked ? "" : "not ",

                           info->value->tray_open ? "open" : "closed");

        }

        if (!info->value->has_inserted) {

            continue;

        }

        if (info->value->inserted->has_backing_file) {

            monitor_printf(mon,

                           "    Backing file:     %s "

                           "(chain depth: %" PRId64 ")\n",

                           info->value->inserted->backing_file,

                           info->value->inserted->backing_file_depth);

        }

        if (info->value->inserted->bps

            || info->value->inserted->bps_rd

            || info->value->inserted->bps_wr

            || info->value->inserted->iops

            || info->value->inserted->iops_rd

            || info->value->inserted->iops_wr)

        {

            monitor_printf(mon, "    I/O throttling:   bps=%" PRId64

                            " bps_rd=%" PRId64  " bps_wr=%" PRId64

                            " iops=%" PRId64 " iops_rd=%" PRId64

                            " iops_wr=%" PRId64 "\n",

                            info->value->inserted->bps,

                            info->value->inserted->bps_rd,

                            info->value->inserted->bps_wr,

                            info->value->inserted->iops,

                            info->value->inserted->iops_rd,

                            info->value->inserted->iops_wr);

        }

        if (verbose) {

            monitor_printf(mon, "\nImages:\n");

            image_info = info->value->inserted->image;

            while (1) {

                    bdrv_image_info_dump((fprintf_function)monitor_printf,

                                         mon, image_info);

                if (image_info->has_backing_image) {

                    image_info = image_info->backing_image;

                } else {

                    break;

                }

            }

        }

    }

    qapi_free_BlockInfoList(block_list);

}

void hmp_info_blockstats(Monitor *mon, const QDict *qdict)

{

    BlockStatsList *stats_list, *stats;

    stats_list = qmp_query_blockstats(NULL);

    for (stats = stats_list; stats; stats = stats->next) {

        if (!stats->value->has_device) {

            continue;

        }

        monitor_printf(mon, "%s:", stats->value->device);

        monitor_printf(mon, " rd_bytes=%" PRId64

                       " wr_bytes=%" PRId64

                       " rd_operations=%" PRId64

                       " wr_operations=%" PRId64

                       " flush_operations=%" PRId64

                       " wr_total_time_ns=%" PRId64

                       " rd_total_time_ns=%" PRId64

                       " flush_total_time_ns=%" PRId64

                       "\n",

                       stats->value->stats->rd_bytes,

                       stats->value->stats->wr_bytes,

                       stats->value->stats->rd_operations,

                       stats->value->stats->wr_operations,

                       stats->value->stats->flush_operations,

                       stats->value->stats->wr_total_time_ns,

                       stats->value->stats->rd_total_time_ns,

                       stats->value->stats->flush_total_time_ns);

    }

    qapi_free_BlockStatsList(stats_list);

}

void hmp_info_vnc(Monitor *mon, const QDict *qdict)

{

    VncInfo *info;

    Error *err = NULL;

    VncClientInfoList *client;

    info = qmp_query_vnc(&err);

    if (err) {

        monitor_printf(mon, "%s\n", error_get_pretty(err));

        error_free(err);

        return;

    }

    if (!info->enabled) {

        monitor_printf(mon, "Server: disabled\n");

        goto out;

    }

    monitor_printf(mon, "Server:\n");

    if (info->has_host && info->has_service) {

        monitor_printf(mon, "     address: %s:%s\n", info->host, info->service);

    }

    if (info->has_auth) {

        monitor_printf(mon, "        auth: %s\n", info->auth);

    }

    if (!info->has_clients || info->clients == NULL) {

        monitor_printf(mon, "Client: none\n");

    } else {

        for (client = info->clients; client; client = client->next) {

            monitor_printf(mon, "Client:\n");

            monitor_printf(mon, "     address: %s:%s\n",

                           client->value->host, client->value->service);

            monitor_printf(mon, "  x509_dname: %s\n",

                           client->value->x509_dname ?

                           client->value->x509_dname : "none");

            monitor_printf(mon, "    username: %s\n",

                           client->value->has_sasl_username ?

                           client->value->sasl_username : "none");

        }

    }

out:

    qapi_free_VncInfo(info);

}

void hmp_info_spice(Monitor *mon, const QDict *qdict)

{

    SpiceChannelList *chan;

    SpiceInfo *info;

    info = qmp_query_spice(NULL);

    if (!info->enabled) {

        monitor_printf(mon, "Server: disabled\n");

        goto out;

    }

    monitor_printf(mon, "Server:\n");

    if (info->has_port) {

        monitor_printf(mon, "     address: %s:%" PRId64 "\n",

                       info->host, info->port);

    }

    if (info->has_tls_port) {

        monitor_printf(mon, "     address: %s:%" PRId64 " [tls]\n",

                       info->host, info->tls_port);

    }

    monitor_printf(mon, "    migrated: %s\n",

                   info->migrated ? "true" : "false");

    monitor_printf(mon, "        auth: %s\n", info->auth);

    monitor_printf(mon, "    compiled: %s\n", info->compiled_version);

    monitor_printf(mon, "  mouse-mode: %s\n",

                   SpiceQueryMouseMode_lookup[info->mouse_mode]);

    if (!info->has_channels || info->channels == NULL) {

        monitor_printf(mon, "Channels: none\n");

    } else {

        for (chan = info->channels; chan; chan = chan->next) {

            monitor_printf(mon, "Channel:\n");

            monitor_printf(mon, "     address: %s:%s%s\n",

                           chan->value->host, chan->value->port,

                           chan->value->tls ? " [tls]" : "");

            monitor_printf(mon, "     session: %" PRId64 "\n",

                           chan->value->connection_id);

            monitor_printf(mon, "     channel: %" PRId64 ":%" PRId64 "\n",

                           chan->value->channel_type, chan->value->channel_id);

        }

    }

out:

    qapi_free_SpiceInfo(info);

}

void hmp_info_balloon(Monitor *mon, const QDict *qdict)

{

    BalloonInfo *info;

    Error *err = NULL;

    info = qmp_query_balloon(&err);

    if (err) {

        monitor_printf(mon, "%s\n", error_get_pretty(err));

        error_free(err);

        return;

    }

    monitor_printf(mon, "balloon: actual=%" PRId64 "\n", info->actual >> 20);

    qapi_free_BalloonInfo(info);

}

static void hmp_info_pci_device(Monitor *mon, const PciDeviceInfo *dev)

{

    PciMemoryRegionList *region;

    monitor_printf(mon, "  Bus %2" PRId64 ", ", dev->bus);

    monitor_printf(mon, "device %3" PRId64 ", function %" PRId64 ":\n",

                   dev->slot, dev->function);

    monitor_printf(mon, "    ");

    if (dev->class_info.has_desc) {

        monitor_printf(mon, "%s", dev->class_info.desc);

    } else {

        monitor_printf(mon, "Class %04" PRId64, dev->class_info.class);

    }

    monitor_printf(mon, ": PCI device %04" PRIx64 ":%04" PRIx64 "\n",

                   dev->id.vendor, dev->id.device);

    if (dev->has_irq) {

        monitor_printf(mon, "      IRQ %" PRId64 ".\n", dev->irq);

    }

    if (dev->has_pci_bridge) {

        monitor_printf(mon, "      BUS %" PRId64 ".\n",

                       dev->pci_bridge->bus.number);

        monitor_printf(mon, "      secondary bus %" PRId64 ".\n",

                       dev->pci_bridge->bus.secondary);

        monitor_printf(mon, "      subordinate bus %" PRId64 ".\n",

                       dev->pci_bridge->bus.subordinate);

        monitor_printf(mon, "      IO range [0x%04"PRIx64", 0x%04"PRIx64"]\n",

                       dev->pci_bridge->bus.io_range->base,

                       dev->pci_bridge->bus.io_range->limit);

        monitor_printf(mon,

                       "      memory range [0x%08"PRIx64", 0x%08"PRIx64"]\n",

                       dev->pci_bridge->bus.memory_range->base,

                       dev->pci_bridge->bus.memory_range->limit);

        monitor_printf(mon, "      prefetchable memory range "

                       "[0x%08"PRIx64", 0x%08"PRIx64"]\n",

                       dev->pci_bridge->bus.prefetchable_range->base,

                       dev->pci_bridge->bus.prefetchable_range->limit);

    }

    for (region = dev->regions; region; region = region->next) {

        uint64_t addr, size;

        addr = region->value->address;

        size = region->value->size;

        monitor_printf(mon, "      BAR%" PRId64 ": ", region->value->bar);

        if (!strcmp(region->value->type, "io")) {

            monitor_printf(mon, "I/O at 0x%04" PRIx64

                                " [0x%04" PRIx64 "].\n",

                           addr, addr + size - 1);

        } else {

            monitor_printf(mon, "%d bit%s memory at 0x%08" PRIx64

                               " [0x%08" PRIx64 "].\n",

                           region->value->mem_type_64 ? 64 : 32,

                           region->value->prefetch ? " prefetchable" : "",

                           addr, addr + size - 1);

        }

    }

    monitor_printf(mon, "      id \"%s\"\n", dev->qdev_id);

    if (dev->has_pci_bridge) {

        if (dev->pci_bridge->has_devices) {

            PciDeviceInfoList *cdev;

            for (cdev = dev->pci_bridge->devices; cdev; cdev = cdev->next) {

                hmp_info_pci_device(mon, cdev->value);

            }

        }

    }

}

void hmp_info_pci(Monitor *mon, const QDict *qdict)

{

    PciInfoList *info_list, *info;

    Error *err = NULL;

    info_list = qmp_query_pci(&err);

    if (err) {

        monitor_printf(mon, "PCI devices not supported\n");

        error_free(err);

        return;

    }

    for (info = info_list; info; info = info->next) {

        PciDeviceInfoList *dev;

        for (dev = info->value->devices; dev; dev = dev->next) {

            hmp_info_pci_device(mon, dev->value);

        }

    }

    qapi_free_PciInfoList(info_list);

}

void hmp_info_block_jobs(Monitor *mon, const QDict *qdict)

{

    BlockJobInfoList *list;

    Error *err = NULL;

    list = qmp_query_block_jobs(&err);

    assert(!err);

    if (!list) {

        monitor_printf(mon, "No active jobs\n");

        return;

    }

    while (list) {

        if (strcmp(list->value->type, "stream") == 0) {

            monitor_printf(mon, "Streaming device %s: Completed %" PRId64

                           " of %" PRId64 " bytes, speed limit %" PRId64

                           " bytes/s\n",

                           list->value->device,

                           list->value->offset,

                           list->value->len,

                           list->value->speed);

        } else {

            monitor_printf(mon, "Type %s, device %s: Completed %" PRId64

                           " of %" PRId64 " bytes, speed limit %" PRId64

                           " bytes/s\n",

                           list->value->type,

                           list->value->device,

                           list->value->offset,

                           list->value->len,

                           list->value->speed);

        }

        list = list->next;

    }

}

void hmp_info_tpm(Monitor *mon, const QDict *qdict)

{

    TPMInfoList *info_list, *info;

    Error *err = NULL;

    unsigned int c = 0;

    TPMPassthroughOptions *tpo;

    info_list = qmp_query_tpm(&err);

    if (err) {

        monitor_printf(mon, "TPM device not supported\n");

        error_free(err);

        return;

    }

    if (info_list) {

        monitor_printf(mon, "TPM device:\n");

    }

    for (info = info_list; info; info = info->next) {

        TPMInfo *ti = info->value;

        monitor_printf(mon, " tpm%d: model=%s\n",

                       c, TpmModel_lookup[ti->model]);

        monitor_printf(mon, "  \\ %s: type=%s",

                       ti->id, TpmTypeOptionsKind_lookup[ti->options->kind]);

        switch (ti->options->kind) {

        case TPM_TYPE_OPTIONS_KIND_PASSTHROUGH:

            tpo = ti->options->passthrough;

            monitor_printf(mon, "%s%s%s%s",

                           tpo->has_path ? ",path=" : "",

                           tpo->has_path ? tpo->path : "",

                           tpo->has_cancel_path ? ",cancel-path=" : "",

                           tpo->has_cancel_path ? tpo->cancel_path : "");

            break;

        case TPM_TYPE_OPTIONS_KIND_MAX:

            break;

        }

        monitor_printf(mon, "\n");

        c++;

    }

    qapi_free_TPMInfoList(info_list);

}

void hmp_quit(Monitor *mon, const QDict *qdict)

{

    monitor_suspend(mon);

    qmp_quit(NULL);

}

void hmp_stop(Monitor *mon, const QDict *qdict)

{

    qmp_stop(NULL);

}

void hmp_system_reset(Monitor *mon, const QDict *qdict)

{

    qmp_system_reset(NULL);

}

void hmp_system_powerdown(Monitor *mon, const QDict *qdict)

{

    qmp_system_powerdown(NULL);

}

void hmp_cpu(Monitor *mon, const QDict *qdict)

{

    int64_t cpu_index;

    /* XXX: drop the monitor_set_cpu() usage when all HMP commands that

            use it are converted to the QAPI */

    cpu_index = qdict_get_int(qdict, "index");

    if (monitor_set_cpu(cpu_index) < 0) {

        monitor_printf(mon, "invalid CPU index\n");

    }

}

void hmp_memsave(Monitor *mon, const QDict *qdict)

{

    uint32_t size = qdict_get_int(qdict, "size");

    const char *filename = qdict_get_str(qdict, "filename");

    uint64_t addr = qdict_get_int(qdict, "val");

    Error *errp = NULL;

    qmp_memsave(addr, size, filename, true, monitor_get_cpu_index(), &errp);

    hmp_handle_error(mon, &errp);

}

void hmp_pmemsave(Monitor *mon, const QDict *qdict)

{

    uint32_t size = qdict_get_int(qdict, "size");

    const char *filename = qdict_get_str(qdict, "filename");

    uint64_t addr = qdict_get_int(qdict, "val");

    Error *errp = NULL;

    qmp_pmemsave(addr, size, filename, &errp);

    hmp_handle_error(mon, &errp);

}

void hmp_ringbuf_write(Monitor *mon, const QDict *qdict)

{

    const char *chardev = qdict_get_str(qdict, "device");

    const char *data = qdict_get_str(qdict, "data");

    Error *errp = NULL;

    qmp_ringbuf_write(chardev, data, false, 0, &errp);

    hmp_handle_error(mon, &errp);

}

void hmp_ringbuf_read(Monitor *mon, const QDict *qdict)

{

    uint32_t size = qdict_get_int(qdict, "size");

    const char *chardev = qdict_get_str(qdict, "device");

    char *data;

    Error *errp = NULL;

    int i;

    data = qmp_ringbuf_read(chardev, size, false, 0, &errp);

    if (errp) {

        monitor_printf(mon, "%s\n", error_get_pretty(errp));

        error_free(errp);

        return;

    }

    for (i = 0; data[i]; i++) {

        unsigned char ch = data[i];

        if (ch == '\\') {

            monitor_printf(mon, "\\\\");

        } else if ((ch < 0x20 && ch != '\n' && ch != '\t') || ch == 0x7F) {

            monitor_printf(mon, "\\u%04X", ch);

        } else {

            monitor_printf(mon, "%c", ch);

        }

    }

    monitor_printf(mon, "\n");

    g_free(data);

}

static void hmp_cont_cb(void *opaque, int err)

{

    if (!err) {

        qmp_cont(NULL);

    }

}

static bool key_is_missing(const BlockInfo *bdev)

{

    return (bdev->inserted && bdev->inserted->encryption_key_missing);

}

void hmp_cont(Monitor *mon, const QDict *qdict)

{

    BlockInfoList *bdev_list, *bdev;

    Error *errp = NULL;

    bdev_list = qmp_query_block(NULL);

    for (bdev = bdev_list; bdev; bdev = bdev->next) {

        if (key_is_missing(bdev->value)) {

            monitor_read_block_device_key(mon, bdev->value->device,

                                          hmp_cont_cb, NULL);

            goto out;

        }

    }