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libvirt/tools/virt-admin.c

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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"
#include "virgettext.h"
#include "virtime.h"
#include "virt-admin-completer.h"
#include "vsh-table.h"
#include "virenum.h"
/* Gnulib doesn't guarantee SA_SIGINFO support. */
#ifndef SA_SIGINFO
# define SA_SIGINFO 0
#endif
#define VIRT_ADMIN_PROMPT "virt-admin # "
/* we don't need precision to milliseconds in this module */
#define VIRT_ADMIN_TIME_BUFLEN VIR_TIME_STRING_BUFLEN - 3
static char *progname;
static const vshCmdGrp cmdGroups[];
static const vshClientHooks hooks;
VIR_ENUM_DECL(virClientTransport);
VIR_ENUM_IMPL(virClientTransport,
VIR_CLIENT_TRANS_LAST,
N_("unix"),
N_("tcp"),
N_("tls"));
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;
}
/*
* vshAdmCatchDisconnect:
*
* We get here when the connection was closed. Unlike virsh, we do not save
* the fact that the event was raised, since there is virAdmConnectIsAlive to
* check if the communication channel has not been closed by remote party.
*/
static void
vshAdmCatchDisconnect(virAdmConnectPtr conn ATTRIBUTE_UNUSED,
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();
uri = virAdmConnectGetURI(conn);
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));
VIR_FREE(uri);
if (error) {
virSetError(error);
virFreeError(error);
}
}
static int
vshAdmConnect(vshControl *ctl, unsigned int flags)
{
vshAdmControlPtr priv = ctl->privData;
priv->conn = virAdmConnectOpen(ctl->connname, flags);
if (!priv->conn) {
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 {
if (virAdmConnectRegisterCloseCallback(priv->conn, vshAdmCatchDisconnect,
NULL, NULL) < 0)
vshError(ctl, "%s", _("Unable to register disconnect callback"));
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;
if (!priv->conn)
return ret;
virAdmConnectUnregisterCloseCallback(priv->conn, vshAdmCatchDisconnect);
ret = virAdmConnectClose(priv->conn);
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"));
priv->conn = NULL;
return ret;
}
/*
* vshAdmReconnect:
*
* Reconnect to a daemon's admin server
*
*/
static void
vshAdmReconnect(vshControl *ctl)
{
vshAdmControlPtr priv = ctl->privData;
if (priv->conn)
priv->wantReconnect = true;
vshAdmDisconnect(ctl);
vshAdmConnect(ctl, 0);
priv->wantReconnect = false;
}
/*
* '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;
uri = virAdmConnectGetURI(priv->conn);
if (!uri) {
vshError(ctl, "%s", _("failed to get URI"));
return false;
}
vshPrint(ctl, "%s\n", uri);
VIR_FREE(uri);
return true;
}
/*
* "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);
ret = virAdmConnectGetLibVersion(priv->conn, &daemonVersion);
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;
}
/* ---------------
* 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;
bool connected = priv->conn;
if (vshCommandOptStringReq(ctl, cmd, "name", &name) < 0)
return false;
if (name) {
VIR_FREE(ctl->connname);
ctl->connname = vshStrdup(ctl, name);
}
vshAdmReconnect(ctl);
if (!connected && priv->conn)
vshPrint(ctl, "%s\n", _("Connected to the admin server"));
return !!priv->conn;
}
/* ---------------
* 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;
char *uri = NULL;
virAdmServerPtr *srvs = NULL;
vshAdmControlPtr priv = ctl->privData;
vshTablePtr table = NULL;
/* 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;
}
table = vshTableNew(_("Id"), _("Name"), NULL);
if (!table)
goto cleanup;
for (i = 0; i < nsrvs; i++) {
VIR_AUTOFREE(char *) idStr = NULL;
if (virAsprintf(&idStr, "%zu", i) < 0)
goto cleanup;
if (vshTableRowAppend(table,
idStr,
virAdmServerGetName(srvs[i]),
NULL) < 0)
goto cleanup;
}
vshTablePrintToStdout(table, ctl);
ret = true;
cleanup:
vshTableFree(table);
if (srvs) {
for (i = 0; i < nsrvs; i++)
virAdmServerFree(srvs[i]);
VIR_FREE(srvs);
}
VIR_FREE(uri);
return ret;
}
/* ---------------------------
* 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,
.completer = vshAdmServerCompleter,
.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++)
vshPrint(ctl, "%-15s: %u\n", params[i].field, params[i].value.ui);
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,
.completer = vshAdmServerCompleter,
.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;
#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; \
}
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) {
vshError(ctl, "%s", _("--min-workers must be less than or equal to "
"--max-workers"));
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;
}
/* ------------------------
* 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,
.completer = vshAdmServerCompleter,
.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;
vshTablePtr table = NULL;
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;
}
table = vshTableNew(_("Id"), _("Transport"), _("Connected since"), NULL);
if (!table)
goto cleanup;
for (i = 0; i < nclts; i++) {
VIR_AUTOFREE(char *) timestr = NULL;
VIR_AUTOFREE(char *) idStr = NULL;
virAdmClientPtr client = clts[i];
id = virAdmClientGetID(client);
transport = virAdmClientGetTransport(client);
if (vshAdmGetTimeStr(ctl, virAdmClientGetTimestamp(client),
&timestr) < 0)
goto cleanup;
if (virAsprintf(&idStr, "%llu", id) < 0)
goto cleanup;
if (vshTableRowAppend(table, idStr,
vshAdmClientTransportToString(transport),
timestr, NULL) < 0)
goto cleanup;
}
vshTablePrintToStdout(table, ctl);
ret = true;
cleanup:
vshTableFree(table);
if (clts) {
for (i = 0; i < nclts; i++)
virAdmClientFree(clts[i]);
VIR_FREE(clts);
}
virAdmServerFree(srv);
return ret;
}
/* -------------------
* 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,
.completer = vshAdmServerCompleter,
.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;
}
/* -------------------------
* 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,
.completer = vshAdmServerCompleter,
.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;
}
/* ------------------------
* 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,
.completer = vshAdmServerCompleter,
.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++)
vshPrint(ctl, "%-20s: %u\n", params[i].field, params[i].value.ui);
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,
.completer = vshAdmServerCompleter,
.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;
#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; \
}
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) {
vshError(ctl, "%s", _("--max-unauth-clients must be less than or equal to "
"--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;
}
/* --------------------------
* 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: "));
vshPrint(ctl, "%s\n", NULLSTR_EMPTY(filters));
}
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: "));
vshPrint(ctl, "%s\n", NULLSTR_EMPTY(outputs));
}
return true;
}
static void *
vshAdmConnectionHandler(vshControl *ctl)
{
vshAdmControlPtr priv = ctl->privData;
if (!virAdmConnectIsAlive(priv->conn))
vshAdmReconnect(ctl);
if (!virAdmConnectIsAlive(priv->conn)) {
vshError(ctl, "%s", _("no valid connection"));
return NULL;
}
return priv->conn;
}
/*
* 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);
if (priv->conn)
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;
if (ctl->connname) {
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).
*/
if (!priv->conn) {
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);
VIR_FREE(ctl->connname);
if (priv->conn)
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);
vshPrint(ctl, _("See web site at %s\n\n"), "https://libvirt.org/");
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':
VIR_FREE(ctl->connname);
ctl->connname = vshStrdup(ctl, optarg);
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);
}
ATTRIBUTE_FALLTHROUGH;
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]);
return vshCommandStringParse(ctl, argv[optind], NULL);
} 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,
VSH_CMD_SELF_TEST,
VSH_CMD_COMPLETE,
{.name = "uri",
.handler = cmdURI,
.opts = NULL,
.info = info_uri,
.flags = 0
},
{.name = "version",
.handler = cmdVersion,
.opts = NULL,
.info = info_version,
.flags = 0
},
{.name = "connect",
.handler = cmdConnect,
.opts = opts_connect,
.info = info_connect,
.flags = VSH_CMD_FLAG_NOCONNECT
},
{.name = NULL}
};
static const vshCmdDef monitoringCmds[] = {
{.name = "srv-list",
.flags = VSH_CMD_FLAG_ALIAS,
.alias = "server-list"
},
{.name = "server-list",
.handler = cmdSrvList,
.opts = NULL,
.info = info_srv_list,
.flags = 0
},
{.name = "srv-threadpool-info",
.flags = VSH_CMD_FLAG_ALIAS,
.alias = "server-threadpool-info"
},
{.name = "server-threadpool-info",
.handler = cmdSrvThreadpoolInfo,
.opts = opts_srv_threadpool_info,
.info = info_srv_threadpool_info,
.flags = 0
},
{.name = "srv-clients-list",
.flags = VSH_CMD_FLAG_ALIAS,
.alias = "client-list"
},
{.name = "client-list",
.handler = cmdSrvClientsList,
.opts = opts_srv_clients_list,
.info = info_srv_clients_list,
.flags = 0
},
{.name = "client-info",
.handler = cmdClientInfo,
.opts = opts_client_info,
.info = info_client_info,
.flags = 0
},
{.name = "srv-clients-info",
.flags = VSH_CMD_FLAG_ALIAS,
.alias = "server-clients-info"
},
{.name = "server-clients-info",
.handler = cmdSrvClientsInfo,
.opts = opts_srv_clients_info,
.info = info_srv_clients_info,
.flags = 0
},
{.name = NULL}
};
static const vshCmdDef managementCmds[] = {
{.name = "srv-threadpool-set",
.flags = VSH_CMD_FLAG_ALIAS,
.alias = "server-threadpool-set"
},
{.name = "server-threadpool-set",
.handler = cmdSrvThreadpoolSet,
.opts = opts_srv_threadpool_set,
.info = info_srv_threadpool_set,
.flags = 0
},
{.name = "client-disconnect",
.handler = cmdClientDisconnect,
.opts = opts_client_disconnect,
.info = info_client_disconnect,
.flags = 0
},
{.name = "srv-clients-set",
.flags = VSH_CMD_FLAG_ALIAS,
.alias = "server-clients-set"
},
{.name = "server-clients-set",
.handler = cmdSrvClientsSet,
.opts = opts_srv_clients_set,
.info = info_srv_clients_set,
.flags = 0
},
{.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
},
{.name = NULL}
};
static const vshCmdGrp cmdGroups[] = {
{"Virt-admin itself", "virt-admin", vshAdmCmds},
{"Monitoring commands", "monitor", monitoringCmds},
{"Management commands", "management", managementCmds},
{NULL, NULL, NULL}
};
static const vshClientHooks hooks = {
.connHandler = vshAdmConnectionHandler
};
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 */
ctl->env_prefix = "VIRT_ADMIN";
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;
if (virGettextInitialize() < 0)
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;
}
if (virAdmInitialize() < 0) {
vshError(ctl, "%s", _("Failed to initialize libvirt"));
return EXIT_FAILURE;
}
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
if (vshCommandStringParse(ctl, ctl->cmdstr, NULL))
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);
}
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