virt-admin.c 43.0 KB
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/*
 * virt-admin.c: a shell to exercise the libvirt admin API
 *
 * Copyright (C) 2015 Red Hat, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library.  If not, see
 * <http://www.gnu.org/licenses/>.
 */

#include <config.h>
#include "virt-admin.h"

#include <getopt.h>

#if WITH_READLINE
# include <readline/readline.h>
# include <readline/history.h>
#endif

#include "internal.h"
#include "viralloc.h"
#include "virerror.h"
#include "virfile.h"
#include "virstring.h"
#include "virthread.h"
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#include "virgettext.h"
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#include "virtime.h"
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#include "virt-admin-completer.h"
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#include "vsh-table.h"
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#include "virenum.h"
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/* Gnulib doesn't guarantee SA_SIGINFO support.  */
#ifndef SA_SIGINFO
# define SA_SIGINFO 0
#endif

#define VIRT_ADMIN_PROMPT "virt-admin # "

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/* we don't need precision to milliseconds in this module */
#define VIRT_ADMIN_TIME_BUFLEN VIR_TIME_STRING_BUFLEN - 3

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static char *progname;

static const vshCmdGrp cmdGroups[];
static const vshClientHooks hooks;

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VIR_ENUM_DECL(virClientTransport);
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VIR_ENUM_IMPL(virClientTransport,
              VIR_CLIENT_TRANS_LAST,
              N_("unix"),
              N_("tcp"),
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              N_("tls"));
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static const char *
vshAdmClientTransportToString(int transport)
{
    const char *str = virClientTransportTypeToString(transport);
    return str ? _(str) : _("unknown");
}

/*
 * vshAdmGetTimeStr:
 *
 * Produces string representation (local time) of @then
 * (seconds since epoch UTC) using format 'YYYY-MM-DD HH:MM:SS+ZZZZ'.
 *
 * Returns 0 if conversion finished successfully, -1 in case of an error.
 * Caller is responsible for freeing the string returned.
 */
static int
vshAdmGetTimeStr(vshControl *ctl, time_t then, char **result)
{
    char *tmp = NULL;
    struct tm timeinfo;

    if (!localtime_r(&then, &timeinfo))
        goto error;

    if (VIR_ALLOC_N(tmp, VIRT_ADMIN_TIME_BUFLEN) < 0)
        goto error;

    if (strftime(tmp, VIRT_ADMIN_TIME_BUFLEN, "%Y-%m-%d %H:%M:%S%z",
                 &timeinfo) == 0) {
        VIR_FREE(tmp);
        goto error;
    }

    *result = tmp;
    return 0;

 error:
    vshError(ctl, "%s", _("Timestamp string conversion failed"));
    return -1;
}

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/*
 * vshAdmCatchDisconnect:
 *
 * We get here when the connection was closed. Unlike virsh, we do not save
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 * the fact that the event was raised, since there is virAdmConnectIsAlive to
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 * check if the communication channel has not been closed by remote party.
 */
static void
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vshAdmCatchDisconnect(virAdmConnectPtr conn ATTRIBUTE_UNUSED,
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                      int reason,
                      void *opaque)
{
    vshControl *ctl = opaque;
    const char *str = "unknown reason";
    virErrorPtr error;
    char *uri = NULL;

    if (reason == VIR_CONNECT_CLOSE_REASON_CLIENT)
        return;

    error = virSaveLastError();
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    uri = virAdmConnectGetURI(conn);
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    switch ((virConnectCloseReason) reason) {
    case VIR_CONNECT_CLOSE_REASON_ERROR:
        str = N_("Disconnected from %s due to I/O error");
        break;
    case VIR_CONNECT_CLOSE_REASON_EOF:
        str = N_("Disconnected from %s due to end of file");
        break;
    case VIR_CONNECT_CLOSE_REASON_KEEPALIVE:
        str = N_("Disconnected from %s due to keepalive timeout");
        break;
        /* coverity[dead_error_condition] */
    case VIR_CONNECT_CLOSE_REASON_CLIENT:
    case VIR_CONNECT_CLOSE_REASON_LAST:
        break;
    }

    vshError(ctl, _(str), NULLSTR(uri));
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    VIR_FREE(uri);
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    if (error) {
        virSetError(error);
        virFreeError(error);
    }
}

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static int
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vshAdmConnect(vshControl *ctl, unsigned int flags)
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{
    vshAdmControlPtr priv = ctl->privData;

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    priv->conn = virAdmConnectOpen(ctl->connname, flags);
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    if (!priv->conn) {
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        if (priv->wantReconnect)
            vshError(ctl, "%s", _("Failed to reconnect to the admin server"));
        else
            vshError(ctl, "%s", _("Failed to connect to the admin server"));
        return -1;
    } else {
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        if (virAdmConnectRegisterCloseCallback(priv->conn, vshAdmCatchDisconnect,
                                               NULL, NULL) < 0)
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            vshError(ctl, "%s", _("Unable to register disconnect callback"));

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        if (priv->wantReconnect)
            vshPrint(ctl, "%s\n", _("Reconnected to the admin server"));
    }

    return 0;
}

static int
vshAdmDisconnect(vshControl *ctl)
{
    int ret = 0;
    vshAdmControlPtr priv = ctl->privData;

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    if (!priv->conn)
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        return ret;

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    virAdmConnectUnregisterCloseCallback(priv->conn, vshAdmCatchDisconnect);
    ret = virAdmConnectClose(priv->conn);
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    if (ret < 0)
        vshError(ctl, "%s", _("Failed to disconnect from the admin server"));
    else if (ret > 0)
        vshError(ctl, "%s", _("One or more references were leaked after "
                              "disconnect from the hypervisor"));
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    priv->conn = NULL;
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    return ret;
}

/*
 * vshAdmReconnect:
 *
 * Reconnect to a daemon's admin server
 *
 */
static void
vshAdmReconnect(vshControl *ctl)
{
    vshAdmControlPtr priv = ctl->privData;
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    if (priv->conn)
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        priv->wantReconnect = true;

    vshAdmDisconnect(ctl);
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    vshAdmConnect(ctl, 0);
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    priv->wantReconnect = false;
}

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/*
 * 'uri' command
 */

static const vshCmdInfo info_uri[] = {
    {.name = "help",
     .data = N_("print the admin server URI")
    },
    {.name = "desc",
     .data = ""
    },
    {.name = NULL}
};

static bool
cmdURI(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED)
{
    char *uri;
    vshAdmControlPtr priv = ctl->privData;

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    uri = virAdmConnectGetURI(priv->conn);
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    if (!uri) {
        vshError(ctl, "%s", _("failed to get URI"));
        return false;
    }

    vshPrint(ctl, "%s\n", uri);
    VIR_FREE(uri);

    return true;
}

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/*
 * "version" command
 */

static const vshCmdInfo info_version[] = {
    {.name = "help",
     .data = N_("show version")
    },
    {.name = "desc",
     .data = N_("Display the system and also the daemon version information.")
    },
    {.name = NULL}
};

static bool
cmdVersion(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED)
{
    unsigned long libVersion;
    unsigned long long includeVersion;
    unsigned long long daemonVersion;
    int ret;
    unsigned int major;
    unsigned int minor;
    unsigned int rel;
    vshAdmControlPtr priv = ctl->privData;

    includeVersion = LIBVIR_VERSION_NUMBER;
    major = includeVersion / 1000000;
    includeVersion %= 1000000;
    minor = includeVersion / 1000;
    rel = includeVersion % 1000;
    vshPrint(ctl, _("Compiled against library: libvirt %d.%d.%d\n"),
             major, minor, rel);

    ret = virGetVersion(&libVersion, NULL, NULL);
    if (ret < 0) {
        vshError(ctl, "%s", _("failed to get the library version"));
        return false;
    }
    major = libVersion / 1000000;
    libVersion %= 1000000;
    minor = libVersion / 1000;
    rel = libVersion % 1000;
    vshPrint(ctl, _("Using library: libvirt %d.%d.%d\n"),
             major, minor, rel);

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    ret = virAdmConnectGetLibVersion(priv->conn, &daemonVersion);
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    if (ret < 0) {
        vshError(ctl, "%s", _("failed to get the daemon version"));
    } else {
        major = daemonVersion / 1000000;
        daemonVersion %= 1000000;
        minor = daemonVersion / 1000;
        rel = daemonVersion % 1000;
        vshPrint(ctl, _("Running against daemon: %d.%d.%d\n"),
                 major, minor, rel);
    }

    return true;
}

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/* ---------------
 * Command Connect
 * ---------------
 */

static const vshCmdOptDef opts_connect[] = {
    {.name = "name",
     .type = VSH_OT_STRING,
     .flags = VSH_OFLAG_EMPTY_OK,
     .help = N_("daemon's admin server connection URI")
    },
    {.name = NULL}
};

static const vshCmdInfo info_connect[] = {
    {.name = "help",
     .data = N_("connect to daemon's admin server")
    },
    {.name = "desc",
     .data = N_("Connect to a daemon's administrating server.")
    },
    {.name = NULL}
};

static bool
cmdConnect(vshControl *ctl, const vshCmd *cmd)
{
    const char *name = NULL;
    vshAdmControlPtr priv = ctl->privData;
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    bool connected = priv->conn;
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    if (vshCommandOptStringReq(ctl, cmd, "name", &name) < 0)
        return false;

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    if (name) {
        VIR_FREE(ctl->connname);
        ctl->connname = vshStrdup(ctl, name);
    }
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    vshAdmReconnect(ctl);
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    if (!connected && priv->conn)
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        vshPrint(ctl, "%s\n", _("Connected to the admin server"));
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    return !!priv->conn;
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}

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/* ---------------
 * Command srv-list
 * ---------------
 */

static const vshCmdInfo info_srv_list[] = {
    {.name = "help",
     .data = N_("list available servers on a daemon")
    },
    {.name = "desc",
     .data = N_("List all manageable servers on a daemon.")
    },
    {.name = NULL}
};

static bool
cmdSrvList(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED)
{
    int nsrvs = 0;
    size_t i;
    bool ret = false;
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    char *uri = NULL;
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    virAdmServerPtr *srvs = NULL;
    vshAdmControlPtr priv = ctl->privData;
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    vshTablePtr table = NULL;
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    /* Obtain a list of available servers on the daemon */
    if ((nsrvs = virAdmConnectListServers(priv->conn, &srvs, 0)) < 0) {
        uri = virAdmConnectGetURI(priv->conn);
        vshError(ctl, _("failed to obtain list of available servers from %s"),
                 NULLSTR(uri));
        goto cleanup;
    }

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    table = vshTableNew(_("Id"), _("Name"), NULL);
    if (!table)
        goto cleanup;

    for (i = 0; i < nsrvs; i++) {
        VIR_AUTOFREE(char *) idStr = NULL;
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        if (virAsprintf(&idStr, "%zu", i) < 0)
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            goto cleanup;

        if (vshTableRowAppend(table,
                              idStr,
                              virAdmServerGetName(srvs[i]),
                              NULL) < 0)
            goto cleanup;
    }

    vshTablePrintToStdout(table, ctl);
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    ret = true;
 cleanup:
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    vshTableFree(table);
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    if (srvs) {
        for (i = 0; i < nsrvs; i++)
            virAdmServerFree(srvs[i]);
        VIR_FREE(srvs);
    }
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    VIR_FREE(uri);
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    return ret;
}

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/* ---------------------------
 * Command srv-threadpool-info
 * ---------------------------
 */

static const vshCmdInfo info_srv_threadpool_info[] = {
    {.name = "help",
     .data = N_("get server workerpool parameters")
    },
    {.name = "desc",
     .data = N_("Retrieve threadpool attributes from a server. ")
    },
    {.name = NULL}
};

static const vshCmdOptDef opts_srv_threadpool_info[] = {
    {.name = "server",
     .type = VSH_OT_DATA,
     .flags = VSH_OFLAG_REQ,
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     .completer = vshAdmServerCompleter,
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     .help = N_("Server to retrieve threadpool attributes from."),
    },
    {.name = NULL}
};

static bool
cmdSrvThreadpoolInfo(vshControl *ctl, const vshCmd *cmd)
{
    bool ret = false;
    virTypedParameterPtr params = NULL;
    int nparams = 0;
    size_t i;
    const char *srvname = NULL;
    virAdmServerPtr srv = NULL;
    vshAdmControlPtr priv = ctl->privData;

    if (vshCommandOptStringReq(ctl, cmd, "server", &srvname) < 0)
        return false;

    if (!(srv = virAdmConnectLookupServer(priv->conn, srvname, 0)))
        goto cleanup;

    if (virAdmServerGetThreadPoolParameters(srv, &params,
                                            &nparams, 0) < 0) {
        vshError(ctl, "%s",
                 _("Unable to get server workerpool parameters"));
        goto cleanup;
    }

    for (i = 0; i < nparams; i++)
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        vshPrint(ctl, "%-15s: %u\n", params[i].field, params[i].value.ui);
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    ret = true;

 cleanup:
    virTypedParamsFree(params, nparams);
    if (srv)
        virAdmServerFree(srv);
    return ret;
}

/* --------------------------
 * Command srv-threadpool-set
 * --------------------------
 */

static const vshCmdInfo info_srv_threadpool_set[] = {
    {.name = "help",
     .data = N_("set server workerpool parameters")
    },
    {.name = "desc",
     .data = N_("Tune threadpool attributes on a server. See OPTIONS for "
                "currently supported attributes.")
    },
    {.name = NULL}
};

static const vshCmdOptDef opts_srv_threadpool_set[] = {
    {.name = "server",
     .type = VSH_OT_DATA,
     .flags = VSH_OFLAG_REQ,
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     .completer = vshAdmServerCompleter,
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     .help = N_("Server to alter threadpool attributes on."),
    },
    {.name = "min-workers",
     .type = VSH_OT_INT,
     .help = N_("Change bottom limit to number of workers."),
    },
    {.name = "max-workers",
     .type = VSH_OT_INT,
     .help = N_("Change upper limit to number of workers."),
    },
    {.name = "priority-workers",
     .type = VSH_OT_INT,
     .help = N_("Change the current number of priority workers"),
    },
    {.name = NULL}
};

static bool
cmdSrvThreadpoolSet(vshControl *ctl, const vshCmd *cmd)
{
    bool ret = false;
    int rv = 0;
    unsigned int val, min, max;
    int maxparams = 0;
    int nparams = 0;
    const char *srvname = NULL;
    virTypedParameterPtr params = NULL;
    virAdmServerPtr srv = NULL;
    vshAdmControlPtr priv = ctl->privData;

    if (vshCommandOptStringReq(ctl, cmd, "server", &srvname) < 0)
        return false;

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#define PARSE_CMD_TYPED_PARAM(NAME, FIELD) \
    if ((rv = vshCommandOptUInt(ctl, cmd, NAME, &val)) < 0) { \
        vshError(ctl, _("Unable to parse integer parameter '%s'"), NAME); \
        goto cleanup; \
    } else if (rv > 0) { \
        if (virTypedParamsAddUInt(&params, &nparams, &maxparams, \
                                  FIELD, val) < 0) \
        goto save_error; \
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    }

    PARSE_CMD_TYPED_PARAM("max-workers", VIR_THREADPOOL_WORKERS_MAX);
    PARSE_CMD_TYPED_PARAM("min-workers", VIR_THREADPOOL_WORKERS_MIN);
    PARSE_CMD_TYPED_PARAM("priority-workers", VIR_THREADPOOL_WORKERS_PRIORITY);

#undef PARSE_CMD_TYPED_PARAM

    if (!nparams) {
        vshError(ctl, "%s",
                 _("At least one of options --min-workers, --max-workers, "
                   "--priority-workers is mandatory "));
            goto cleanup;
    }

    if (virTypedParamsGetUInt(params, nparams,
                              VIR_THREADPOOL_WORKERS_MAX, &max) &&
        virTypedParamsGetUInt(params, nparams,
                              VIR_THREADPOOL_WORKERS_MIN, &min) && min > max) {
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        vshError(ctl, "%s", _("--min-workers must be less than or equal to "
                              "--max-workers"));
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        goto cleanup;
    }

    if (!(srv = virAdmConnectLookupServer(priv->conn, srvname, 0)))
        goto cleanup;

    if (virAdmServerSetThreadPoolParameters(srv, params,
                                            nparams, 0) < 0)
        goto error;

    ret = true;

 cleanup:
    virTypedParamsFree(params, nparams);
    if (srv)
        virAdmServerFree(srv);
    return ret;

 save_error:
    vshSaveLibvirtError();

 error:
    vshError(ctl, "%s", _("Unable to change server workerpool parameters"));
    goto cleanup;
}

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/* ------------------------
 * Command srv-clients-list
 * ------------------------
 */

static const vshCmdInfo info_srv_clients_list[] = {
    {.name = "help",
     .data = N_("list clients connected to <server>")
    },
    {.name = "desc",
     .data = N_("List all manageable clients connected to <server>.")
    },
    {.name = NULL}
};

static const vshCmdOptDef opts_srv_clients_list[] = {
    {.name = "server",
     .type = VSH_OT_DATA,
     .flags = VSH_OFLAG_REQ,
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     .completer = vshAdmServerCompleter,
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     .help = N_("server which to list connected clients from"),
    },
    {.name = NULL}
};

static bool
cmdSrvClientsList(vshControl *ctl, const vshCmd *cmd)
{
    int nclts = 0;
    size_t i;
    bool ret = false;
    const char *srvname = NULL;
    unsigned long long id;
    virClientTransport transport;
    virAdmServerPtr srv = NULL;
    virAdmClientPtr *clts = NULL;
    vshAdmControlPtr priv = ctl->privData;
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    vshTablePtr table = NULL;
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    if (vshCommandOptStringReq(ctl, cmd, "server", &srvname) < 0)
        return false;

    if (!(srv = virAdmConnectLookupServer(priv->conn, srvname, 0)))
        goto cleanup;

    /* Obtain a list of clients connected to server @srv */
    if ((nclts = virAdmServerListClients(srv, &clts, 0)) < 0) {
        vshError(ctl, _("failed to obtain list of connected clients "
                        "from server '%s'"), virAdmServerGetName(srv));
        goto cleanup;
    }

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    table = vshTableNew(_("Id"), _("Transport"), _("Connected since"), NULL);
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    if (!table)
        goto cleanup;
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    for (i = 0; i < nclts; i++) {
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        VIR_AUTOFREE(char *) timestr = NULL;
        VIR_AUTOFREE(char *) idStr = NULL;
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        virAdmClientPtr client = clts[i];
        id = virAdmClientGetID(client);
        transport = virAdmClientGetTransport(client);
        if (vshAdmGetTimeStr(ctl, virAdmClientGetTimestamp(client),
                             &timestr) < 0)
            goto cleanup;

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        if (virAsprintf(&idStr, "%llu", id) < 0)
            goto cleanup;
        if (vshTableRowAppend(table, idStr,
                              vshAdmClientTransportToString(transport),
                              timestr, NULL) < 0)
            goto cleanup;
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    }

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    vshTablePrintToStdout(table, ctl);

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    ret = true;

 cleanup:
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    vshTableFree(table);
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    if (clts) {
        for (i = 0; i < nclts; i++)
            virAdmClientFree(clts[i]);
        VIR_FREE(clts);
    }
    virAdmServerFree(srv);
    return ret;
}

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/* -------------------
 * Command client-info
 * -------------------
 */

static const vshCmdInfo info_client_info[] = {
    {.name = "help",
     .data = N_("retrieve client's identity info from server")
    },
    {.name = "desc",
     .data = N_("Retrieve identity details about <client> from <server>")
    },
    {.name = NULL}
};

static const vshCmdOptDef opts_client_info[] = {
    {.name = "server",
     .type = VSH_OT_DATA,
     .flags = VSH_OFLAG_REQ,
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     .completer = vshAdmServerCompleter,
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     .help = N_("server to which <client> is connected to"),
    },
    {.name = "client",
     .type = VSH_OT_DATA,
     .flags = VSH_OFLAG_REQ,
     .help = N_("client which to retrieve identity information for"),
    },
    {.name = NULL}
};

static bool
cmdClientInfo(vshControl *ctl, const vshCmd *cmd)
{
    bool ret = false;
    size_t i;
    unsigned long long id;
    const char *srvname = NULL;
    char *timestr = NULL;
    virAdmServerPtr srv = NULL;
    virAdmClientPtr clnt = NULL;
    virTypedParameterPtr params = NULL;
    int nparams = 0;
    vshAdmControlPtr priv = ctl->privData;

    if (vshCommandOptULongLong(ctl, cmd, "client", &id) < 0)
        return false;

    if (vshCommandOptStringReq(ctl, cmd, "server", &srvname) < 0)
        return false;

    if (!(srv = virAdmConnectLookupServer(priv->conn, srvname, 0)) ||
        !(clnt = virAdmServerLookupClient(srv, id, 0)))
        goto cleanup;

    /* Retrieve client identity info */
    if (virAdmClientGetInfo(clnt, &params, &nparams, 0) < 0) {
        vshError(ctl, _("failed to retrieve client identity information for "
                        "client '%llu' connected to server '%s'"),
                        id, virAdmServerGetName(srv));
        goto cleanup;
    }

    if (vshAdmGetTimeStr(ctl, virAdmClientGetTimestamp(clnt), &timestr) < 0)
        goto cleanup;

    /* this info is provided by the client object itself */
    vshPrint(ctl, "%-15s: %llu\n", "id", virAdmClientGetID(clnt));
    vshPrint(ctl, "%-15s: %s\n", "connection_time", timestr);
    vshPrint(ctl, "%-15s: %s\n", "transport",
             vshAdmClientTransportToString(virAdmClientGetTransport(clnt)));

    for (i = 0; i < nparams; i++) {
        char *str = vshGetTypedParamValue(ctl, &params[i]);
        vshPrint(ctl, "%-15s: %s\n", params[i].field, str);
        VIR_FREE(str);
    }

    ret = true;

 cleanup:
    virTypedParamsFree(params, nparams);
    virAdmServerFree(srv);
    virAdmClientFree(clnt);
    VIR_FREE(timestr);
    return ret;
}
771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791

/* -------------------------
 * Command client-disconnect
 * -------------------------
 */

static const vshCmdInfo info_client_disconnect[] = {
    {.name = "help",
     .data = N_("force disconnect a client from the given server")
    },
    {.name = "desc",
     .data = N_("Force close a specific client's connection to the given "
                "server.")
    },
    {.name = NULL}
};

static const vshCmdOptDef opts_client_disconnect[] = {
    {.name = "server",
     .type = VSH_OT_DATA,
     .flags = VSH_OFLAG_REQ,
792
     .completer = vshAdmServerCompleter,
793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838
     .help = N_("server which the client is currently connected to"),
    },
    {.name = "client",
     .type = VSH_OT_INT,
     .flags = VSH_OFLAG_REQ,
     .help = N_("client which to disconnect, specified by ID"),
    },
    {.name = NULL}
};

static bool
cmdClientDisconnect(vshControl *ctl, const vshCmd *cmd)
{
    bool ret = false;
    const char *srvname = NULL;
    unsigned long long id = 0;
    virAdmServerPtr srv = NULL;
    virAdmClientPtr client = NULL;
    vshAdmControlPtr priv = ctl->privData;

    if (vshCommandOptStringReq(ctl, cmd, "server", &srvname) < 0)
        return false;

    if (vshCommandOptULongLongWrap(ctl, cmd, "client", &id) < 0)
        return false;

    if (!(srv = virAdmConnectLookupServer(priv->conn, srvname, 0)))
        goto cleanup;

    if (!(client = virAdmServerLookupClient(srv, id, 0)))
        goto cleanup;

    if (virAdmClientClose(client, 0) < 0) {
        vshError(ctl, _("Failed to disconnect client '%llu' from server %s"),
                 id, virAdmServerGetName(srv));
        goto cleanup;
    }

    vshPrint(ctl, _("Client '%llu' disconnected"), id);
    ret = true;
 cleanup:
    virAdmClientFree(client);
    virAdmServerFree(srv);
    return ret;
}

839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857
/* ------------------------
 * Command srv-clients-info
 * ------------------------
 */

static const vshCmdInfo info_srv_clients_info[] = {
    {.name = "help",
     .data = N_("get server's client-related configuration limits")
    },
    {.name = "desc",
     .data = N_("Retrieve server's client-related configuration limits ")
    },
    {.name = NULL}
};

static const vshCmdOptDef opts_srv_clients_info[] = {
    {.name = "server",
     .type = VSH_OT_DATA,
     .flags = VSH_OFLAG_REQ,
858
     .completer = vshAdmServerCompleter,
859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887
     .help = N_("Server to retrieve the client limits from."),
    },
    {.name = NULL}
};

static bool
cmdSrvClientsInfo(vshControl *ctl, const vshCmd *cmd)
{
    bool ret = false;
    virTypedParameterPtr params = NULL;
    int nparams = 0;
    size_t i;
    const char *srvname = NULL;
    virAdmServerPtr srv = NULL;
    vshAdmControlPtr priv = ctl->privData;

    if (vshCommandOptStringReq(ctl, cmd, "server", &srvname) < 0)
        return false;

    if (!(srv = virAdmConnectLookupServer(priv->conn, srvname, 0)))
        goto cleanup;

    if (virAdmServerGetClientLimits(srv, &params, &nparams, 0) < 0) {
        vshError(ctl, "%s", _("Unable to retrieve client limits "
                              "from server's configuration"));
        goto cleanup;
    }

    for (i = 0; i < nparams; i++)
888
        vshPrint(ctl, "%-20s: %u\n", params[i].field, params[i].value.ui);
889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917

    ret = true;

 cleanup:
    virTypedParamsFree(params, nparams);
    virAdmServerFree(srv);
    return ret;
}

/* -----------------------
 * Command srv-clients-set
 * -----------------------
 */

static const vshCmdInfo info_srv_clients_set[] = {
    {.name = "help",
     .data = N_("set server's client-related configuration limits")
    },
    {.name = "desc",
     .data = N_("Tune server's client-related configuration limits. "
                "See OPTIONS for currently supported attributes.")
    },
    {.name = NULL}
};

static const vshCmdOptDef opts_srv_clients_set[] = {
    {.name = "server",
     .type = VSH_OT_DATA,
     .flags = VSH_OFLAG_REQ,
918
     .completer = vshAdmServerCompleter,
919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949
     .help = N_("Server to alter the client-related configuration limits on."),
    },
    {.name = "max-clients",
     .type = VSH_OT_INT,
     .help = N_("Change the upper limit to overall number of clients "
                "connected to the server."),
    },
    {.name = "max-unauth-clients",
     .type = VSH_OT_INT,
     .help = N_("Change the upper limit to number of clients waiting for "
                "authentication to be connected to the server"),
    },
    {.name = NULL}
};

static bool
cmdSrvClientsSet(vshControl *ctl, const vshCmd *cmd)
{
    bool ret = false;
    int rv = 0;
    unsigned int val, max, unauth_max;
    int maxparams = 0;
    int nparams = 0;
    const char *srvname = NULL;
    virAdmServerPtr srv = NULL;
    virTypedParameterPtr params = NULL;
    vshAdmControlPtr priv = ctl->privData;

    if (vshCommandOptStringReq(ctl, cmd, "server", &srvname) < 0)
        return false;

950 951 952 953 954 955 956 957
#define PARSE_CMD_TYPED_PARAM(NAME, FIELD) \
    if ((rv = vshCommandOptUInt(ctl, cmd, NAME, &val)) < 0) { \
        vshError(ctl, _("Unable to parse integer parameter '%s'"), NAME); \
        goto cleanup; \
    } else if (rv > 0) { \
        if (virTypedParamsAddUInt(&params, &nparams, &maxparams, \
                                  FIELD, val) < 0) \
        goto save_error; \
958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975
    }

    PARSE_CMD_TYPED_PARAM("max-clients", VIR_SERVER_CLIENTS_MAX);
    PARSE_CMD_TYPED_PARAM("max-unauth-clients", VIR_SERVER_CLIENTS_UNAUTH_MAX);

#undef PARSE_CMD_TYPED_PARAM

    if (!nparams) {
        vshError(ctl, "%s", _("At least one of options --max-clients, "
                              "--max-unauth-clients is mandatory"));
        goto cleanup;
    }

    if (virTypedParamsGetUInt(params, nparams,
                              VIR_SERVER_CLIENTS_MAX, &max) &&
        virTypedParamsGetUInt(params, nparams,
                              VIR_SERVER_CLIENTS_UNAUTH_MAX, &unauth_max) &&
        unauth_max > max) {
976
        vshError(ctl, "%s", _("--max-unauth-clients must be less than or equal to "
977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002
                              "--max-clients"));
        goto cleanup;
    }

    if (!(srv = virAdmConnectLookupServer(priv->conn, srvname, 0)))
        goto cleanup;

    if (virAdmServerSetClientLimits(srv, params, nparams, 0) < 0)
        goto error;

    ret = true;

 cleanup:
    virTypedParamsFree(params, nparams);
    virAdmServerFree(srv);
    return ret;

 save_error:
    vshSaveLibvirtError();

 error:
    vshError(ctl, "%s", _("Unable to change server's client-related "
                          "configuration limits"));
    goto cleanup;
}

1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050
/* --------------------------
 * Command daemon-log-filters
 * --------------------------
 */
static const vshCmdInfo info_daemon_log_filters[] = {
    {.name = "help",
     .data = N_("fetch or set the currently defined set of logging filters on "
                "daemon")
    },
    {.name = "desc",
     .data = N_("Depending on whether run with or without options, the command "
                "fetches or redefines the existing active set of filters on "
                "daemon.")
    },
    {.name = NULL}
};

static const vshCmdOptDef opts_daemon_log_filters[] = {
    {.name = "filters",
     .type = VSH_OT_STRING,
     .help = N_("redefine the existing set of logging filters"),
     .flags = VSH_OFLAG_EMPTY_OK
    },
    {.name = NULL}
};

static bool
cmdDaemonLogFilters(vshControl *ctl, const vshCmd *cmd)
{
    int nfilters;
    char *filters = NULL;
    vshAdmControlPtr priv = ctl->privData;

    if (vshCommandOptBool(cmd, "filters")) {
        if ((vshCommandOptStringReq(ctl, cmd, "filters",
                                    (const char **) &filters) < 0 ||
             virAdmConnectSetLoggingFilters(priv->conn, filters, 0) < 0)) {
            vshError(ctl, _("Unable to change daemon logging settings"));
            return false;
        }
    } else {
        if ((nfilters = virAdmConnectGetLoggingFilters(priv->conn,
                                                       &filters, 0)) < 0) {
            vshError(ctl, _("Unable to get daemon logging filters information"));
            return false;
        }

        vshPrintExtra(ctl, " %-15s", _("Logging filters: "));
J
Ján Tomko 已提交
1051
        vshPrint(ctl, "%s\n", NULLSTR_EMPTY(filters));
1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104
    }

    return true;
}

/* --------------------------
 * Command daemon-log-outputs
 * --------------------------
 */
static const vshCmdInfo info_daemon_log_outputs[] = {
    {.name = "help",
     .data = N_("fetch or set the currently defined set of logging outputs on "
                "daemon")
    },
    {.name = "desc",
     .data = N_("Depending on whether run with or without options, the command "
                "fetches or redefines the existing active set of outputs on "
                "daemon.")
    },
    {.name = NULL}
};

static const vshCmdOptDef opts_daemon_log_outputs[] = {
    {.name = "outputs",
     .type = VSH_OT_STRING,
     .help = N_("redefine the existing set of logging outputs"),
     .flags = VSH_OFLAG_EMPTY_OK
    },
    {.name = NULL}
};

static bool
cmdDaemonLogOutputs(vshControl *ctl, const vshCmd *cmd)
{
    int noutputs;
    char *outputs = NULL;
    vshAdmControlPtr priv = ctl->privData;

    if (vshCommandOptBool(cmd, "outputs")) {
        if ((vshCommandOptStringReq(ctl, cmd, "outputs",
                                    (const char **) &outputs) < 0 ||
             virAdmConnectSetLoggingOutputs(priv->conn, outputs, 0) < 0)) {
            vshError(ctl, _("Unable to change daemon logging settings"));
            return false;
        }
    } else {
        if ((noutputs = virAdmConnectGetLoggingOutputs(priv->conn,
                                                       &outputs, 0)) < 0) {
            vshError(ctl, _("Unable to get daemon logging outputs information"));
            return false;
        }

        vshPrintExtra(ctl, " %-15s", _("Logging outputs: "));
J
Ján Tomko 已提交
1105
        vshPrint(ctl, "%s\n", NULLSTR_EMPTY(outputs));
1106 1107 1108 1109 1110
    }

    return true;
}

1111
static void *
1112
vshAdmConnectionHandler(vshControl *ctl)
1113 1114 1115
{
    vshAdmControlPtr priv = ctl->privData;

1116
    if (!virAdmConnectIsAlive(priv->conn))
1117 1118
        vshAdmReconnect(ctl);

1119
    if (!virAdmConnectIsAlive(priv->conn)) {
1120 1121 1122 1123
        vshError(ctl, "%s", _("no valid connection"));
        return NULL;
    }

1124
    return priv->conn;
1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139
}

/*
 * Initialize connection.
 */
static bool
vshAdmInit(vshControl *ctl)
{
    vshAdmControlPtr priv = ctl->privData;

    /* Since we have the commandline arguments parsed, we need to
     * reload our initial settings to make debugging and readline
     * work properly */
    vshInitReload(ctl);

1140
    if (priv->conn)
1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152
        return false;

    /* set up the library error handler */
    virSetErrorFunc(NULL, vshErrorHandler);

    if (virEventRegisterDefaultImpl() < 0)
        return false;

    if (virThreadCreate(&ctl->eventLoop, true, vshEventLoop, ctl) < 0)
        return false;
    ctl->eventLoopStarted = true;

1153
    if (ctl->connname) {
1154 1155 1156 1157 1158 1159 1160
        vshAdmReconnect(ctl);
        /* Connecting to a named connection must succeed, but we delay
         * connecting to the default connection until we need it
         * (since the first command might be 'connect' which allows a
         * non-default connection, or might be 'help' which needs no
         * connection).
         */
1161
        if (!priv->conn) {
1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184
            vshReportError(ctl);
            return false;
        }
    }

    return true;
}

static void
vshAdmDeinitTimer(int timer ATTRIBUTE_UNUSED, void *opaque ATTRIBUTE_UNUSED)
{
    /* nothing to be done here */
}

/*
 * Deinitialize virt-admin
 */
static void
vshAdmDeinit(vshControl *ctl)
{
    vshAdmControlPtr priv = ctl->privData;

    vshDeinit(ctl);
1185
    VIR_FREE(ctl->connname);
1186

1187
    if (priv->conn)
1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262
        vshAdmDisconnect(ctl);

    virResetLastError();

    if (ctl->eventLoopStarted) {
        int timer;

        virMutexLock(&ctl->lock);
        ctl->quit = true;
        /* HACK: Add a dummy timeout to break event loop */
        timer = virEventAddTimeout(0, vshAdmDeinitTimer, NULL, NULL);
        virMutexUnlock(&ctl->lock);

        virThreadJoin(&ctl->eventLoop);

        if (timer != -1)
            virEventRemoveTimeout(timer);

        ctl->eventLoopStarted = false;
    }

    virMutexDestroy(&ctl->lock);
}

/*
 * Print usage
 */
static void
vshAdmUsage(void)
{
    const vshCmdGrp *grp;
    const vshCmdDef *cmd;

    fprintf(stdout, _("\n%s [options]... [<command_string>]"
                      "\n%s [options]... <command> [args...]\n\n"
                      "  options:\n"
                      "    -c | --connect=URI      daemon admin connection URI\n"
                      "    -d | --debug=NUM        debug level [0-4]\n"
                      "    -h | --help             this help\n"
                      "    -l | --log=FILE         output logging to file\n"
                      "    -q | --quiet            quiet mode\n"
                      "    -v                      short version\n"
                      "    -V                      long version\n"
                      "         --version[=TYPE]   version, TYPE is short or long (default short)\n"
                      "  commands (non interactive mode):\n\n"), progname,
            progname);

    for (grp = cmdGroups; grp->name; grp++) {
        fprintf(stdout, _(" %s (help keyword '%s')\n"),
                grp->name, grp->keyword);
        for (cmd = grp->commands; cmd->name; cmd++) {
            if (cmd->flags & VSH_CMD_FLAG_ALIAS)
                continue;
            fprintf(stdout,
                    "    %-30s %s\n", cmd->name,
                    _(vshCmddefGetInfo(cmd, "help")));
        }
        fprintf(stdout, "\n");
    }

    fprintf(stdout, "%s",
            _("\n  (specify help <group> for details about the commands in the group)\n"));
    fprintf(stdout, "%s",
            _("\n  (specify help <command> for details about the command)\n\n"));
    return;
}

/*
 * Show version and options compiled in
 */
static void
vshAdmShowVersion(vshControl *ctl ATTRIBUTE_UNUSED)
{
    /* FIXME - list a copyright blurb, as in GNU programs?  */
    vshPrint(ctl, _("Virt-admin command line tool of libvirt %s\n"), VERSION);
1263
    vshPrint(ctl, _("See web site at %s\n\n"), "https://libvirt.org/");
1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299

    vshPrint(ctl, "%s", _("Compiled with support for:"));
#ifdef WITH_LIBVIRTD
    vshPrint(ctl, " Daemon");
#endif
#ifdef ENABLE_DEBUG
    vshPrint(ctl, " Debug");
#endif
#if WITH_READLINE
    vshPrint(ctl, " Readline");
#endif
    vshPrint(ctl, "\n");
}

static bool
vshAdmParseArgv(vshControl *ctl, int argc, char **argv)
{
    int arg, debug;
    size_t i;
    int longindex = -1;
    struct option opt[] = {
        {"connect", required_argument, NULL, 'c'},
        {"debug", required_argument, NULL, 'd'},
        {"help", no_argument, NULL, 'h'},
        {"log", required_argument, NULL, 'l'},
        {"quiet", no_argument, NULL, 'q'},
        {"version", optional_argument, NULL, 'v'},
        {NULL, 0, NULL, 0}
    };

    /* Standard (non-command) options. The leading + ensures that no
     * argument reordering takes place, so that command options are
     * not confused with top-level virt-admin options. */
    while ((arg = getopt_long(argc, argv, "+:c:d:hl:qvV", opt, &longindex)) != -1) {
        switch (arg) {
        case 'c':
1300 1301
            VIR_FREE(ctl->connname);
            ctl->connname = vshStrdup(ctl, optarg);
1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331
            break;
        case 'd':
            if (virStrToLong_i(optarg, NULL, 10, &debug) < 0) {
                vshError(ctl, _("option %s takes a numeric argument"),
                         longindex == -1 ? "-d" : "--debug");
                exit(EXIT_FAILURE);
            }
            if (debug < VSH_ERR_DEBUG || debug > VSH_ERR_ERROR)
                vshError(ctl, _("ignoring debug level %d out of range [%d-%d]"),
                         debug, VSH_ERR_DEBUG, VSH_ERR_ERROR);
            else
                ctl->debug = debug;
            break;
        case 'h':
            vshAdmUsage();
            exit(EXIT_SUCCESS);
            break;
        case 'l':
            vshCloseLogFile(ctl);
            ctl->logfile = vshStrdup(ctl, optarg);
            vshOpenLogFile(ctl);
            break;
        case 'q':
            ctl->quiet = true;
            break;
        case 'v':
            if (STRNEQ_NULLABLE(optarg, "long")) {
                puts(VERSION);
                exit(EXIT_SUCCESS);
            }
M
Marc Hartmayer 已提交
1332
            ATTRIBUTE_FALLTHROUGH;
1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366
        case 'V':
            vshAdmShowVersion(ctl);
            exit(EXIT_SUCCESS);
        case ':':
            for (i = 0; opt[i].name != NULL; i++) {
                if (opt[i].val == optopt)
                    break;
            }
            if (opt[i].name)
                vshError(ctl, _("option '-%c'/'--%s' requires an argument"),
                         optopt, opt[i].name);
            else
                vshError(ctl, _("option '-%c' requires an argument"), optopt);
            exit(EXIT_FAILURE);
        case '?':
            if (optopt)
                vshError(ctl, _("unsupported option '-%c'. See --help."), optopt);
            else
                vshError(ctl, _("unsupported option '%s'. See --help."), argv[optind - 1]);
            exit(EXIT_FAILURE);
        default:
            vshError(ctl, _("unknown option"));
            exit(EXIT_FAILURE);
        }
        longindex = -1;
    }

    if (argc == optind) {
        ctl->imode = true;
    } else {
        /* parse command */
        ctl->imode = false;
        if (argc - optind == 1) {
            vshDebug(ctl, VSH_ERR_INFO, "commands: \"%s\"\n", argv[optind]);
1367
            return vshCommandStringParse(ctl, argv[optind], NULL);
1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381
        } else {
            return vshCommandArgvParse(ctl, argc - optind, argv + optind);
        }
    }
    return true;
}

static const vshCmdDef vshAdmCmds[] = {
    VSH_CMD_CD,
    VSH_CMD_ECHO,
    VSH_CMD_EXIT,
    VSH_CMD_HELP,
    VSH_CMD_PWD,
    VSH_CMD_QUIT,
M
Michal Privoznik 已提交
1382
    VSH_CMD_SELF_TEST,
1383
    VSH_CMD_COMPLETE,
1384 1385 1386 1387 1388 1389
    {.name = "uri",
     .handler = cmdURI,
     .opts = NULL,
     .info = info_uri,
     .flags = 0
    },
1390 1391 1392 1393 1394 1395
    {.name = "version",
     .handler = cmdVersion,
     .opts = NULL,
     .info = info_version,
     .flags = 0
    },
1396 1397 1398 1399 1400 1401 1402 1403 1404
    {.name = "connect",
     .handler = cmdConnect,
     .opts = opts_connect,
     .info = info_connect,
     .flags = VSH_CMD_FLAG_NOCONNECT
    },
    {.name = NULL}
};

E
Erik Skultety 已提交
1405 1406
static const vshCmdDef monitoringCmds[] = {
    {.name = "srv-list",
1407 1408 1409 1410
     .flags = VSH_CMD_FLAG_ALIAS,
     .alias = "server-list"
    },
    {.name = "server-list",
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     .handler = cmdSrvList,
     .opts = NULL,
     .info = info_srv_list,
     .flags = 0
    },
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    {.name = "srv-threadpool-info",
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     .flags = VSH_CMD_FLAG_ALIAS,
     .alias = "server-threadpool-info"
    },
    {.name = "server-threadpool-info",
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     .handler = cmdSrvThreadpoolInfo,
     .opts = opts_srv_threadpool_info,
     .info = info_srv_threadpool_info,
     .flags = 0
    },
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    {.name = "srv-clients-list",
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     .flags = VSH_CMD_FLAG_ALIAS,
     .alias = "client-list"
    },
    {.name = "client-list",
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     .handler = cmdSrvClientsList,
     .opts = opts_srv_clients_list,
     .info = info_srv_clients_list,
     .flags = 0
    },
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    {.name = "client-info",
     .handler = cmdClientInfo,
     .opts = opts_client_info,
     .info = info_client_info,
     .flags = 0
    },
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    {.name = "srv-clients-info",
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     .flags = VSH_CMD_FLAG_ALIAS,
     .alias = "server-clients-info"
    },
    {.name = "server-clients-info",
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     .handler = cmdSrvClientsInfo,
     .opts = opts_srv_clients_info,
     .info = info_srv_clients_info,
     .flags = 0
    },
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    {.name = NULL}
};

static const vshCmdDef managementCmds[] = {
    {.name = "srv-threadpool-set",
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     .flags = VSH_CMD_FLAG_ALIAS,
     .alias = "server-threadpool-set"
    },
    {.name = "server-threadpool-set",
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     .handler = cmdSrvThreadpoolSet,
     .opts = opts_srv_threadpool_set,
     .info = info_srv_threadpool_set,
     .flags = 0
    },
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    {.name = "client-disconnect",
     .handler = cmdClientDisconnect,
     .opts = opts_client_disconnect,
     .info = info_client_disconnect,
     .flags = 0
    },
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    {.name = "srv-clients-set",
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     .flags = VSH_CMD_FLAG_ALIAS,
     .alias = "server-clients-set"
    },
    {.name = "server-clients-set",
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     .handler = cmdSrvClientsSet,
     .opts = opts_srv_clients_set,
     .info = info_srv_clients_set,
     .flags = 0
    },
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    {.name = "daemon-log-filters",
     .handler = cmdDaemonLogFilters,
     .opts = opts_daemon_log_filters,
     .info = info_daemon_log_filters,
     .flags = 0
    },
    {.name = "daemon-log-outputs",
     .handler = cmdDaemonLogOutputs,
     .opts = opts_daemon_log_outputs,
     .info = info_daemon_log_outputs,
     .flags = 0
    },
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    {.name = NULL}
};

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static const vshCmdGrp cmdGroups[] = {
    {"Virt-admin itself", "virt-admin", vshAdmCmds},
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    {"Monitoring commands", "monitor", monitoringCmds},
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    {"Management commands", "management", managementCmds},
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    {NULL, NULL, NULL}
};

static const vshClientHooks hooks = {
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    .connHandler = vshAdmConnectionHandler
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};

int
main(int argc, char **argv)
{
    vshControl _ctl, *ctl = &_ctl;
    vshAdmControl virtAdminCtl;
    bool ret = true;

    memset(ctl, 0, sizeof(vshControl));
    memset(&virtAdminCtl, 0, sizeof(vshAdmControl));
    ctl->name = "virt-admin";        /* hardcoded name of the binary */
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    ctl->env_prefix = "VIRT_ADMIN";
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    ctl->log_fd = -1;                /* Initialize log file descriptor */
    ctl->debug = VSH_DEBUG_DEFAULT;
    ctl->hooks = &hooks;

    ctl->eventPipe[0] = -1;
    ctl->eventPipe[1] = -1;
    ctl->privData = &virtAdminCtl;

    if (!(progname = strrchr(argv[0], '/')))
        progname = argv[0];
    else
        progname++;
    ctl->progname = progname;

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    if (virGettextInitialize() < 0)
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        return EXIT_FAILURE;

    if (isatty(STDIN_FILENO)) {
        ctl->istty = true;

#ifndef WIN32
        if (tcgetattr(STDIN_FILENO, &ctl->termattr) < 0)
            ctl->istty = false;
#endif
    }

    if (virMutexInit(&ctl->lock) < 0) {
        vshError(ctl, "%s", _("Failed to initialize mutex"));
        return EXIT_FAILURE;
    }

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    if (virAdmInitialize() < 0) {
        vshError(ctl, "%s", _("Failed to initialize libvirt"));
        return EXIT_FAILURE;
    }

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    virFileActivateDirOverride(argv[0]);

    if (!vshInit(ctl, cmdGroups, NULL))
        exit(EXIT_FAILURE);

    if (!vshAdmParseArgv(ctl, argc, argv) ||
        !vshAdmInit(ctl)) {
        vshAdmDeinit(ctl);
        exit(EXIT_FAILURE);
    }

    if (!ctl->imode) {
        ret = vshCommandRun(ctl, ctl->cmd);
    } else {
        /* interactive mode */
        if (!ctl->quiet) {
            vshPrint(ctl,
                     _("Welcome to %s, the administrating virtualization "
                       "interactive terminal.\n\n"),
                     progname);
            vshPrint(ctl, "%s",
                     _("Type:  'help' for help with commands\n"
                       "       'quit' to quit\n\n"));
        }

        do {
            ctl->cmdstr = vshReadline(ctl, VIRT_ADMIN_PROMPT);
            if (ctl->cmdstr == NULL)
                break;          /* EOF */
            if (*ctl->cmdstr) {
#if WITH_READLINE
                add_history(ctl->cmdstr);
#endif
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                if (vshCommandStringParse(ctl, ctl->cmdstr, NULL))
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                    vshCommandRun(ctl, ctl->cmd);
            }
            VIR_FREE(ctl->cmdstr);
        } while (ctl->imode);

        if (ctl->cmdstr == NULL)
            fputc('\n', stdout);        /* line break after alone prompt */
    }

    vshAdmDeinit(ctl);
    exit(ret ? EXIT_SUCCESS : EXIT_FAILURE);
}