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libvirt/src/qemu/qemu_monitor_text.c
Daniel P. Berrange cc53b4c444 Wire up SPICE client relocation with QEMU migration 
Use the graphics information from the QEMU migration cookie to
issue a 'client_migrate_info' monitor command to QEMU. This causes
the SPICE client to automatically reconnect to the target host
when migration completes

* src/qemu/qemu_migration.c: Set data for SPICE client relocation
  before starting migration on src
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
  src/qemu/qemu_monitor_json.c, src/qemu/qemu_monitor_json.h,
  src/qemu/qemu_monitor_text.c, src/qemu/qemu_monitor_text.h: Add
  new qemuMonitorGraphicsRelocate() command
2011-05-16 15:18:22 +01:00

2750 lines
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/*
* qemu_monitor_text.c: interaction with QEMU monitor console
*
* Copyright (C) 2006-2011 Red Hat, Inc.
* Copyright (C) 2006 Daniel P. Berrange
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include <config.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <poll.h>
#include <unistd.h>
#include <string.h>
#include "qemu_monitor_text.h"
#include "qemu_command.h"
#include "c-ctype.h"
#include "c-strcasestr.h"
#include "memory.h"
#include "logging.h"
#include "driver.h"
#include "datatypes.h"
#include "virterror_internal.h"
#include "buf.h"
#define VIR_FROM_THIS VIR_FROM_QEMU
#define QEMU_CMD_PROMPT "\n(qemu) "
#define QEMU_PASSWD_PROMPT "Password: "
#define DEBUG_IO 0
/* Return -1 for error, 0 for success */
typedef int qemuMonitorExtraPromptHandler(qemuMonitorPtr mon,
const char *buf,
const char *prompt,
void *data);
/* When connecting to a monitor, QEMU will print a greeting like
*
* QEMU 0.11.0 monitor - type 'help' for more information
*
* Don't expect the version number bit to be stable :-)
*/
#define GREETING_PREFIX "QEMU "
#define GREETING_POSTFIX "type 'help' for more information\r\n(qemu) "
#define BASIC_PROMPT "(qemu) "
#define PASSWORD_PROMPT "Password:"
#define DISK_ENCRYPTION_PREFIX "("
#define DISK_ENCRYPTION_POSTFIX ") is encrypted."
#define LINE_ENDING "\r\n"
int qemuMonitorTextIOProcess(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
const char *data,
size_t len ATTRIBUTE_UNUSED,
qemuMonitorMessagePtr msg)
{
int used = 0;
/* Check for & discard greeting */
if (STRPREFIX(data, GREETING_PREFIX)) {
const char *offset = strstr(data, GREETING_POSTFIX);
/* We see the greeting prefix, but not postfix, so pretend we've
not consumed anything. We'll restart when more data arrives. */
if (!offset) {
#if DEBUG_IO
VIR_DEBUG("Partial greeting seen, getting out & waiting for more");
#endif
return 0;
}
used = offset - data + strlen(GREETING_POSTFIX);
#if DEBUG_IO
VIR_DEBUG("Discarded monitor greeting");
#endif
}
/* Don't print raw data in debug because its full of control chars */
/*VIR_DEBUG("Process data %d byts of data [%s]", len - used, data + used);*/
#if DEBUG_IO
VIR_DEBUG("Process data %d byts of data", (int)(len - used));
#endif
/* Look for a non-zero reply followed by prompt */
if (msg && !msg->finished) {
char *start = NULL;
char *end = NULL;
char *skip;
/* If we're here, we've already sent the command. We now
* strip the trailing '\r' because it makes the matching
* code that follows a little easier ie we can just strstr()
* for the original command
*/
if (msg->txLength > 0) {
char *tmp;
if ((tmp = strchr(msg->txBuffer, '\r'))) {
*tmp = '\0';
}
}
/* QEMU echos the command back to us, full of control
* character junk that we don't want. We have to skip
* over this junk by looking for the first complete
* repetition of our command. Then we can look for
* the prompt that is supposed to follow
*
* NB, we can't optimize by immediately looking for
* LINE_ENDING, because QEMU 0.10 has bad problems
* when initially connecting where it might write a
* prompt in the wrong place. So we must not look
* for LINE_ENDING, or BASIC_PROMPT until we've
* seen our original command echod.
*/
skip = strstr(data + used, msg->txBuffer);
/* After the junk we should have a line ending... */
if (skip) {
start = strstr(skip + strlen(msg->txBuffer), LINE_ENDING);
}
/* ... then our command reply data, following by a (qemu) prompt */
if (start) {
char *passwd;
start += strlen(LINE_ENDING);
/* We might get a prompt for a password before the (qemu) prompt */
passwd = strstr(start, PASSWORD_PROMPT);
if (passwd) {
#if DEBUG_IO
VIR_DEBUG("Seen a passwowrd prompt [%s]", data + used);
#endif
if (msg->passwordHandler) {
int i;
/* Try and handle the prompt */
if (msg->passwordHandler(mon, msg,
start,
passwd - start + strlen(PASSWORD_PROMPT),
msg->passwordOpaque) < 0)
return -1;
/* Blank out the password prompt so we don't re-trigger
* if we have to go back to sleep for more I/O */
for (i = 0 ; i < strlen(PASSWORD_PROMPT) ; i++)
start[i] = ' ';
/* Handled, so skip forward over password prompt */
start = passwd;
} else {
errno = EACCES;
return -1;
}
}
end = strstr(start, BASIC_PROMPT);
}
if (start && end) {
int want = end - start;
/* Annoyingly some commands may not have any reply data
* at all upon success, but since we've detected the
* BASIC_PROMPT we can reasonably reliably cope */
if (want) {
if (VIR_REALLOC_N(msg->rxBuffer,
msg->rxLength + want + 1) < 0)
return -1;
memcpy(msg->rxBuffer + msg->rxLength, start, want);
msg->rxLength += want;
msg->rxBuffer[msg->rxLength] = '\0';
#if DEBUG_IO
VIR_DEBUG("Finished %d byte reply [%s]", want, msg->rxBuffer);
} else {
VIR_DEBUG("Finished 0 byte reply");
#endif
}
msg->finished = 1;
used += end - (data + used);
used += strlen(BASIC_PROMPT);
}
}
#if DEBUG_IO
VIR_DEBUG("Total used %d", used);
#endif
return used;
}
static int
qemuMonitorTextCommandWithHandler(qemuMonitorPtr mon,
const char *cmd,
qemuMonitorPasswordHandler passwordHandler,
void *passwordOpaque,
int scm_fd,
char **reply)
{
int ret;
qemuMonitorMessage msg;
*reply = NULL;
memset(&msg, 0, sizeof msg);
if (virAsprintf(&msg.txBuffer, "%s\r", cmd) < 0) {
virReportOOMError();
return -1;
}
msg.txLength = strlen(msg.txBuffer);
msg.txFD = scm_fd;
msg.passwordHandler = passwordHandler;
msg.passwordOpaque = passwordOpaque;
VIR_DEBUG("Send command '%s' for write with FD %d", cmd, scm_fd);
ret = qemuMonitorSend(mon, &msg);
VIR_DEBUG("Receive command reply ret=%d errno=%d %d bytes '%s'",
ret, msg.lastErrno, msg.rxLength, msg.rxBuffer);
/* Just in case buffer had some passwords in */
memset(msg.txBuffer, 0, msg.txLength);
VIR_FREE(msg.txBuffer);
/* To make life safer for callers, already ensure there's at least an empty string */
if (msg.rxBuffer) {
*reply = msg.rxBuffer;
} else {
*reply = strdup("");
if (!*reply) {
virReportOOMError();
return -1;
}
}
if (ret < 0) {
virReportSystemError(msg.lastErrno,
_("cannot send monitor command '%s'"), cmd);
VIR_FREE(*reply);
}
return ret;
}
int
qemuMonitorTextCommandWithFd(qemuMonitorPtr mon,
const char *cmd,
int scm_fd,
char **reply)
{
return qemuMonitorTextCommandWithHandler(mon, cmd, NULL, NULL,
scm_fd, reply);
}
static int
qemuMonitorSendDiskPassphrase(qemuMonitorPtr mon,
qemuMonitorMessagePtr msg,
const char *data,
size_t len ATTRIBUTE_UNUSED,
void *opaque)
{
virConnectPtr conn = opaque;
char *path;
char *passphrase = NULL;
size_t passphrase_len = 0;
int res;
const char *pathStart;
const char *pathEnd;
/*
* For disk passwords:
*
* ide0-hd0 (/path/to/volume) is encrypted.
* Password:
*
*/
pathStart = strstr(data, DISK_ENCRYPTION_PREFIX);
pathEnd = strstr(data, DISK_ENCRYPTION_POSTFIX);
if (!pathStart || !pathEnd || pathStart >= pathEnd) {
errno = -EINVAL;
return -1;
}
/* Extra the path */
pathStart += strlen(DISK_ENCRYPTION_PREFIX);
path = strndup(pathStart, pathEnd - pathStart);
if (!path) {
errno = ENOMEM;
return -1;
}
/* Fetch the disk password if possible */
res = qemuMonitorGetDiskSecret(mon,
conn,
path,
&passphrase,
&passphrase_len);
VIR_FREE(path);
if (res < 0)
return -1;
/* Enlarge transmit buffer to allow for the extra data
* to be sent back */
if (VIR_REALLOC_N(msg->txBuffer,
msg->txLength + passphrase_len + 1 + 1) < 0) {
memset(passphrase, 0, passphrase_len);
VIR_FREE(passphrase);
errno = ENOMEM;
return -1;
}
/* Queue the password for sending */
memcpy(msg->txBuffer + msg->txLength,
passphrase, passphrase_len);
msg->txLength += passphrase_len;
msg->txBuffer[msg->txLength] = '\r';
msg->txLength++;
msg->txBuffer[msg->txLength] = '\0';
memset(passphrase, 0, passphrase_len);
VIR_FREE(passphrase);
return 0;
}
int
qemuMonitorTextStartCPUs(qemuMonitorPtr mon,
virConnectPtr conn) {
char *reply;
if (qemuMonitorTextCommandWithHandler(mon, "cont",
qemuMonitorSendDiskPassphrase,
conn,
-1, &reply) < 0)
return -1;
VIR_FREE(reply);
return 0;
}
int
qemuMonitorTextStopCPUs(qemuMonitorPtr mon) {
char *info;
if (qemuMonitorHMPCommand(mon, "stop", &info) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("cannot stop CPU execution"));
return -1;
}
VIR_FREE(info);
return 0;
}
int
qemuMonitorTextGetStatus(qemuMonitorPtr mon, bool *running)
{
char *reply;
int ret = -1;
if (qemuMonitorHMPCommand(mon, "info status", &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("cannot get status info"));
return -1;
}
if (strstr(reply, "running")) {
*running = true;
} else if (strstr(reply, "paused")) {
*running = false;
} else {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("unexpected reply from info status: %s"), reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextSystemPowerdown(qemuMonitorPtr mon) {
char *info;
if (qemuMonitorHMPCommand(mon, "system_powerdown", &info) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("system shutdown operation failed"));
return -1;
}
VIR_FREE(info);
return 0;
}
int qemuMonitorTextGetCPUInfo(qemuMonitorPtr mon,
int **pids)
{
char *qemucpus = NULL;
char *line;
int lastVcpu = -1;
pid_t *cpupids = NULL;
size_t ncpupids = 0;
if (qemuMonitorHMPCommand(mon, "info cpus", &qemucpus) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("cannot run monitor command to fetch CPU thread info"));
return -1;
}
/*
* This is the gross format we're about to parse :-{
*
* (qemu) info cpus
* * CPU #0: pc=0x00000000000f0c4a thread_id=30019
* CPU #1: pc=0x00000000fffffff0 thread_id=30020
* CPU #2: pc=0x00000000fffffff0 thread_id=30021
*
*/
line = qemucpus;
do {
char *offset = strchr(line, '#');
char *end = NULL;
int vcpu = 0, tid = 0;
/* See if we're all done */
if (offset == NULL)
break;
/* Extract VCPU number */
if (virStrToLong_i(offset + 1, &end, 10, &vcpu) < 0)
goto error;
if (end == NULL || *end != ':')
goto error;
/* Extract host Thread ID */
if ((offset = strstr(line, "thread_id=")) == NULL)
goto error;
if (virStrToLong_i(offset + strlen("thread_id="), &end, 10, &tid) < 0)
goto error;
if (end == NULL || !c_isspace(*end))
goto error;
if (vcpu != (lastVcpu + 1))
goto error;
if (VIR_REALLOC_N(cpupids, ncpupids+1) < 0)
goto error;
VIR_DEBUG("vcpu=%d pid=%d", vcpu, tid);
cpupids[ncpupids++] = tid;
lastVcpu = vcpu;
/* Skip to next data line */
line = strchr(offset, '\r');
if (line == NULL)
line = strchr(offset, '\n');
} while (line != NULL);
/* Validate we got data for all VCPUs we expected */
VIR_FREE(qemucpus);
*pids = cpupids;
return ncpupids;
error:
VIR_FREE(qemucpus);
VIR_FREE(cpupids);
/* Returning 0 to indicate non-fatal failure, since
* older QEMU does not have VCPU<->PID mapping and
* we don't want to fail on that
*/
return 0;
}
static int parseMemoryStat(char **text, unsigned int tag,
const char *search, virDomainMemoryStatPtr stat)
{
char *dummy;
unsigned long long value;
if (STRPREFIX (*text, search)) {
*text += strlen(search);
if (virStrToLong_ull (*text, &dummy, 10, &value)) {
VIR_DEBUG ("error reading %s: %s", search, *text);
return 0;
}
/* Convert bytes to kilobytes for libvirt */
switch (tag) {
case VIR_DOMAIN_MEMORY_STAT_SWAP_IN:
case VIR_DOMAIN_MEMORY_STAT_SWAP_OUT:
case VIR_DOMAIN_MEMORY_STAT_UNUSED:
case VIR_DOMAIN_MEMORY_STAT_AVAILABLE:
value = value >> 10;
}
stat->tag = tag;
stat->val = value;
return 1;
}
return 0;
}
/* The reply from the 'info balloon' command may contain additional memory
* statistics in the form: '[,<tag>=<val>]*'
*/
static int qemuMonitorParseExtraBalloonInfo(char *text,
virDomainMemoryStatPtr stats,
unsigned int nr_stats)
{
char *p = text;
unsigned int nr_stats_found = 0;
while (*p && nr_stats_found < nr_stats) {
if (parseMemoryStat(&p, VIR_DOMAIN_MEMORY_STAT_SWAP_IN,
",mem_swapped_in=", &stats[nr_stats_found]) ||
parseMemoryStat(&p, VIR_DOMAIN_MEMORY_STAT_SWAP_OUT,
",mem_swapped_out=", &stats[nr_stats_found]) ||
parseMemoryStat(&p, VIR_DOMAIN_MEMORY_STAT_MAJOR_FAULT,
",major_page_faults=", &stats[nr_stats_found]) ||
parseMemoryStat(&p, VIR_DOMAIN_MEMORY_STAT_MINOR_FAULT,
",minor_page_faults=", &stats[nr_stats_found]) ||
parseMemoryStat(&p, VIR_DOMAIN_MEMORY_STAT_UNUSED,
",free_mem=", &stats[nr_stats_found]) ||
parseMemoryStat(&p, VIR_DOMAIN_MEMORY_STAT_AVAILABLE,
",total_mem=", &stats[nr_stats_found]))
nr_stats_found++;
/* Skip to the next label. When *p is ',' the last match attempt
* failed so try to match the next ','.
*/
if (*p == ',')
p++;
p = strchr (p, ',');
if (!p) break;
}
return nr_stats_found;
}
/* The reply from QEMU contains 'ballon: actual=421' where value is in MB */
#define BALLOON_PREFIX "balloon: actual="
/*
* Returns: 0 if balloon not supported, +1 if balloon query worked
* or -1 on failure
*/
int qemuMonitorTextGetBalloonInfo(qemuMonitorPtr mon,
unsigned long *currmem)
{
char *reply = NULL;
int ret = -1;
char *offset;
if (qemuMonitorHMPCommand(mon, "info balloon", &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("could not query memory balloon allocation"));
return -1;
}
if ((offset = strstr(reply, BALLOON_PREFIX)) != NULL) {
unsigned int memMB;
char *end;
offset += strlen(BALLOON_PREFIX);
if (virStrToLong_ui(offset, &end, 10, &memMB) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("could not parse memory balloon allocation from '%s'"), reply);
goto cleanup;
}
*currmem = memMB * 1024;
ret = 1;
} else {
/* We don't raise an error here, since its to be expected that
* many QEMU's don't support ballooning
*/
ret = 0;
}
cleanup:
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextGetMemoryStats(qemuMonitorPtr mon,
virDomainMemoryStatPtr stats,
unsigned int nr_stats)
{
char *reply = NULL;
int ret = 0;
char *offset;
if (qemuMonitorHMPCommand(mon, "info balloon", &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("could not query memory balloon statistics"));
return -1;
}
if ((offset = strstr(reply, BALLOON_PREFIX)) != NULL) {
offset += strlen(BALLOON_PREFIX);
if ((offset = strchr(offset, ',')) != NULL) {
ret = qemuMonitorParseExtraBalloonInfo(offset, stats, nr_stats);
}
}
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextGetBlockStatsInfo(qemuMonitorPtr mon,
const char *devname,
long long *rd_req,
long long *rd_bytes,
long long *wr_req,
long long *wr_bytes,
long long *errs)
{
char *info = NULL;
int ret = -1;
char *dummy;
const char *p, *eol;
int devnamelen = strlen(devname);
if (qemuMonitorHMPCommand (mon, "info blockstats", &info) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("'info blockstats' command failed"));
goto cleanup;
}
/* If the command isn't supported then qemu prints the supported
* info commands, so the output starts "info ". Since this is
* unlikely to be the name of a block device, we can use this
* to detect if qemu supports the command.
*/
if (strstr(info, "\ninfo ")) {
qemuReportError(VIR_ERR_NO_SUPPORT,
"%s",
_("'info blockstats' not supported by this qemu"));
goto cleanup;
}
*rd_req = -1;
*rd_bytes = -1;
*wr_req = -1;
*wr_bytes = -1;
*errs = -1;
/* The output format for both qemu & KVM is:
* blockdevice: rd_bytes=% wr_bytes=% rd_operations=% wr_operations=%
* (repeated for each block device)
* where '%' is a 64 bit number.
*/
p = info;
while (*p) {
/* New QEMU has separate names for host & guest side of the disk
* and libvirt gives the host side a 'drive-' prefix. The passed
* in devname is the guest side though
*/
if (STRPREFIX(p, QEMU_DRIVE_HOST_PREFIX))
p += strlen(QEMU_DRIVE_HOST_PREFIX);
if (STREQLEN (p, devname, devnamelen)
&& p[devnamelen] == ':' && p[devnamelen+1] == ' ') {
eol = strchr (p, '\n');
if (!eol)
eol = p + strlen (p);
p += devnamelen+2; /* Skip to first label. */
while (*p) {
if (STRPREFIX (p, "rd_bytes=")) {
p += 9;
if (virStrToLong_ll (p, &dummy, 10, rd_bytes) == -1)
VIR_DEBUG ("error reading rd_bytes: %s", p);
} else if (STRPREFIX (p, "wr_bytes=")) {
p += 9;
if (virStrToLong_ll (p, &dummy, 10, wr_bytes) == -1)
VIR_DEBUG ("error reading wr_bytes: %s", p);
} else if (STRPREFIX (p, "rd_operations=")) {
p += 14;
if (virStrToLong_ll (p, &dummy, 10, rd_req) == -1)
VIR_DEBUG ("error reading rd_req: %s", p);
} else if (STRPREFIX (p, "wr_operations=")) {
p += 14;
if (virStrToLong_ll (p, &dummy, 10, wr_req) == -1)
VIR_DEBUG ("error reading wr_req: %s", p);
} else
VIR_DEBUG ("unknown block stat near %s", p);
/* Skip to next label. */
p = strchr (p, ' ');
if (!p || p >= eol) break;
p++;
}
ret = 0;
goto cleanup;
}
/* Skip to next line. */
p = strchr (p, '\n');
if (!p) break;
p++;
}
/* If we reach here then the device was not found. */
qemuReportError (VIR_ERR_INVALID_ARG,
_("no stats found for device %s"), devname);
cleanup:
VIR_FREE(info);
return ret;
}
int qemuMonitorTextGetBlockExtent(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
const char *devname ATTRIBUTE_UNUSED,
unsigned long long *extent ATTRIBUTE_UNUSED)
{
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unable to query block extent with this QEMU"));
return -1;
}
static int
qemuMonitorSendVNCPassphrase(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
qemuMonitorMessagePtr msg,
const char *data ATTRIBUTE_UNUSED,
size_t len ATTRIBUTE_UNUSED,
void *opaque)
{
char *passphrase = opaque;
size_t passphrase_len = strlen(passphrase);
/* Enlarge transmit buffer to allow for the extra data
* to be sent back */
if (VIR_REALLOC_N(msg->txBuffer,
msg->txLength + passphrase_len + 1 + 1) < 0) {
errno = ENOMEM;
return -1;
}
/* Queue the password for sending */
memcpy(msg->txBuffer + msg->txLength,
passphrase, passphrase_len);
msg->txLength += passphrase_len;
msg->txBuffer[msg->txLength] = '\r';
msg->txLength++;
msg->txBuffer[msg->txLength] = '\0';
return 0;
}
int qemuMonitorTextSetVNCPassword(qemuMonitorPtr mon,
const char *password)
{
char *info = NULL;
if (qemuMonitorTextCommandWithHandler(mon, "change vnc password",
qemuMonitorSendVNCPassphrase,
(char *)password,
-1, &info) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("setting VNC password failed"));
return -1;
}
VIR_FREE(info);
return 0;
}
/* Returns -1 on error, -2 if not supported */
int qemuMonitorTextSetPassword(qemuMonitorPtr mon,
const char *protocol,
const char *password,
const char *action_if_connected)
{
char *cmd = NULL;
char *reply = NULL;
int ret = -1;
if (virAsprintf(&cmd, "set_password %s \"%s\" %s",
protocol, password, action_if_connected) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("setting password failed"));
goto cleanup;
}
if (strstr(reply, "unknown command:")) {
ret = -2;
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(reply);
VIR_FREE(cmd);
return ret;
}
/* Returns -1 on error, -2 if not supported */
int qemuMonitorTextExpirePassword(qemuMonitorPtr mon,
const char *protocol,
const char *expire_time)
{
char *cmd = NULL;
char *reply = NULL;
int ret = -1;
if (virAsprintf(&cmd, "expire_password %s %s",
protocol, expire_time) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("expiring password failed"));
goto cleanup;
}
if (strstr(reply, "unknown command:")) {
ret = -2;
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(reply);
VIR_FREE(cmd);
return ret;
}
/*
* Returns: 0 if balloon not supported, +1 if balloon adjust worked
* or -1 on failure
*/
int qemuMonitorTextSetBalloon(qemuMonitorPtr mon,
unsigned long newmem)
{
char *cmd;
char *reply = NULL;
int ret = -1;
/*
* 'newmem' is in KB, QEMU monitor works in MB, and we all wish
* we just worked in bytes with unsigned long long everywhere.
*/
if (virAsprintf(&cmd, "balloon %lu", VIR_DIV_UP(newmem, 1024)) < 0) {
virReportOOMError();
return -1;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("could not balloon memory allocation"));
VIR_FREE(cmd);
return -1;
}
VIR_FREE(cmd);
/* If the command failed qemu prints: 'unknown command'
* No message is printed on success it seems */
if (strstr(reply, "unknown command:")) {
/* Don't set error - it is expected memory balloon fails on many qemu */
ret = 0;
} else {
ret = 1;
}
VIR_FREE(reply);
return ret;
}
/*
* Returns: 0 if CPU hotplug not supported, +1 if CPU hotplug worked
* or -1 on failure
*/
int qemuMonitorTextSetCPU(qemuMonitorPtr mon, int cpu, int online)
{
char *cmd;
char *reply = NULL;
int ret = -1;
if (virAsprintf(&cmd, "cpu_set %d %s", cpu, online ? "online" : "offline") < 0) {
virReportOOMError();
return -1;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("could not change CPU online status"));
VIR_FREE(cmd);
return -1;
}
VIR_FREE(cmd);
/* If the command failed qemu prints: 'unknown command'
* No message is printed on success it seems */
if (strstr(reply, "unknown command:")) {
/* Don't set error - it is expected CPU onlining fails on many qemu - caller will handle */
ret = 0;
} else {
ret = 1;
}
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextEjectMedia(qemuMonitorPtr mon,
const char *devname,
bool force)
{
char *cmd = NULL;
char *reply = NULL;
int ret = -1;
if (virAsprintf(&cmd, "eject %s%s", force ? "-f " : "", devname) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("could not eject media on %s"), devname);
goto cleanup;
}
/* If the command failed qemu prints:
* device not found, device is locked ...
* No message is printed on success it seems */
if (c_strcasestr(reply, "device ")) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("could not eject media on %s: %s"), devname, reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(reply);
VIR_FREE(cmd);
return ret;
}
int qemuMonitorTextChangeMedia(qemuMonitorPtr mon,
const char *devname,
const char *newmedia,
const char *format ATTRIBUTE_UNUSED)
{
char *cmd = NULL;
char *reply = NULL;
char *safepath = NULL;
int ret = -1;
if (!(safepath = qemuMonitorEscapeArg(newmedia))) {
virReportOOMError();
goto cleanup;
}
if (virAsprintf(&cmd, "change %s \"%s\"", devname, safepath) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("could not change media on %s"), devname);
goto cleanup;
}
/* If the command failed qemu prints:
* device not found, device is locked ...
* No message is printed on success it seems */
if (strstr(reply, "device ")) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("could not change media on %s: %s"), devname, reply);
goto cleanup;
}
/* Could not open message indicates bad filename */
if (strstr(reply, "Could not open ")) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("could not change media on %s: %s"), devname, reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(reply);
VIR_FREE(cmd);
VIR_FREE(safepath);
return ret;
}
static int qemuMonitorTextSaveMemory(qemuMonitorPtr mon,
const char *cmdtype,
unsigned long long offset,
size_t length,
const char *path)
{
char *cmd = NULL;
char *reply = NULL;
char *safepath = NULL;
int ret = -1;
if (!(safepath = qemuMonitorEscapeArg(path))) {
virReportOOMError();
goto cleanup;
}
if (virAsprintf(&cmd, "%s %llu %zi \"%s\"", cmdtype, offset, length, safepath) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("could not save memory region to '%s'"), path);
goto cleanup;
}
/* XXX what is printed on failure ? */
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
VIR_FREE(safepath);
return ret;
}
int qemuMonitorTextSaveVirtualMemory(qemuMonitorPtr mon,
unsigned long long offset,
size_t length,
const char *path)
{
return qemuMonitorTextSaveMemory(mon, "memsave", offset, length, path);
}
int qemuMonitorTextSavePhysicalMemory(qemuMonitorPtr mon,
unsigned long long offset,
size_t length,
const char *path)
{
return qemuMonitorTextSaveMemory(mon, "pmemsave", offset, length, path);
}
int qemuMonitorTextSetMigrationSpeed(qemuMonitorPtr mon,
unsigned long bandwidth)
{
char *cmd = NULL;
char *info = NULL;
int ret = -1;
if (virAsprintf(&cmd, "migrate_set_speed %lum", bandwidth) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &info) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("could not restrict migration speed"));
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(info);
VIR_FREE(cmd);
return ret;
}
int qemuMonitorTextSetMigrationDowntime(qemuMonitorPtr mon,
unsigned long long downtime)
{
char *cmd = NULL;
char *info = NULL;
int ret = -1;
if (virAsprintf(&cmd, "migrate_set_downtime %llums", downtime) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &info) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("could not set maximum migration downtime"));
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(info);
VIR_FREE(cmd);
return ret;
}
#define MIGRATION_PREFIX "Migration status: "
#define MIGRATION_TRANSFER_PREFIX "transferred ram: "
#define MIGRATION_REMAINING_PREFIX "remaining ram: "
#define MIGRATION_TOTAL_PREFIX "total ram: "
int qemuMonitorTextGetMigrationStatus(qemuMonitorPtr mon,
int *status,
unsigned long long *transferred,
unsigned long long *remaining,
unsigned long long *total) {
char *reply;
char *tmp;
char *end;
int ret = -1;
*status = QEMU_MONITOR_MIGRATION_STATUS_INACTIVE;
*transferred = 0;
*remaining = 0;
*total = 0;
if (qemuMonitorHMPCommand(mon, "info migrate", &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("cannot query migration status"));
return -1;
}
if ((tmp = strstr(reply, MIGRATION_PREFIX)) != NULL) {
tmp += strlen(MIGRATION_PREFIX);
end = strchr(tmp, '\r');
if (end == NULL) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unexpected migration status in %s"), reply);
goto cleanup;
}
*end = '\0';
if ((*status = qemuMonitorMigrationStatusTypeFromString(tmp)) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unexpected migration status in %s"), reply);
goto cleanup;
}
if (*status == QEMU_MONITOR_MIGRATION_STATUS_ACTIVE) {
tmp = end + 1;
if (!(tmp = strstr(tmp, MIGRATION_TRANSFER_PREFIX)))
goto done;
tmp += strlen(MIGRATION_TRANSFER_PREFIX);
if (virStrToLong_ull(tmp, &end, 10, transferred) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse migration data transferred statistic %s"), tmp);
goto cleanup;
}
*transferred *= 1024;
tmp = end;
if (!(tmp = strstr(tmp, MIGRATION_REMAINING_PREFIX)))
goto done;
tmp += strlen(MIGRATION_REMAINING_PREFIX);
if (virStrToLong_ull(tmp, &end, 10, remaining) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse migration data remaining statistic %s"), tmp);
goto cleanup;
}
*remaining *= 1024;
if (!(tmp = strstr(tmp, MIGRATION_TOTAL_PREFIX)))
goto done;
tmp += strlen(MIGRATION_TOTAL_PREFIX);
if (virStrToLong_ull(tmp, &end, 10, total) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse migration data total statistic %s"), tmp);
goto cleanup;
}
*total *= 1024;
}
}
done:
ret = 0;
cleanup:
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextMigrate(qemuMonitorPtr mon,
unsigned int flags,
const char *dest)
{
char *cmd = NULL;
char *info = NULL;
int ret = -1;
char *safedest = qemuMonitorEscapeArg(dest);
virBuffer extra = VIR_BUFFER_INITIALIZER;
char *extrastr = NULL;
if (!safedest) {
virReportOOMError();
return -1;
}
if (flags & QEMU_MONITOR_MIGRATE_BACKGROUND)
virBufferAddLit(&extra, " -d");
if (flags & QEMU_MONITOR_MIGRATE_NON_SHARED_DISK)
virBufferAddLit(&extra, " -b");
if (flags & QEMU_MONITOR_MIGRATE_NON_SHARED_INC)
virBufferAddLit(&extra, " -i");
if (virBufferError(&extra)) {
virBufferFreeAndReset(&extra);
virReportOOMError();
goto cleanup;
}
extrastr = virBufferContentAndReset(&extra);
if (virAsprintf(&cmd, "migrate %s\"%s\"", extrastr ? extrastr : "",
safedest) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &info) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unable to start migration to %s"), dest);
goto cleanup;
}
/* Now check for "fail" in the output string */
if (strstr(info, "fail") != NULL) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("migration to '%s' failed: %s"), dest, info);
goto cleanup;
}
/* If the command isn't supported then qemu prints:
* unknown command: migrate" */
if (strstr(info, "unknown command:")) {
qemuReportError(VIR_ERR_NO_SUPPORT,
_("migration to '%s' not supported by this qemu: %s"), dest, info);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(extrastr);
VIR_FREE(safedest);
VIR_FREE(info);
VIR_FREE(cmd);
return ret;
}
int qemuMonitorTextMigrateCancel(qemuMonitorPtr mon)
{
char *info = NULL;
if (qemuMonitorHMPCommand(mon, "migrate_cancel", &info) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("cannot run monitor command to cancel migration"));
return -1;
}
VIR_FREE(info);
return 0;
}
int qemuMonitorTextGraphicsRelocate(qemuMonitorPtr mon,
int type,
const char *hostname,
int port,
int tlsPort,
const char *tlsSubject)
{
char *cmd;
char *info = NULL;
if (virAsprintf(&cmd, "client_migrate_info %s %s %d %d %s",
type == VIR_DOMAIN_GRAPHICS_TYPE_SPICE ? "spice" : "vnc",
hostname, port, tlsPort, tlsSubject ? tlsSubject : "") < 0) {
virReportOOMError();
return -1;
}
if (qemuMonitorHMPCommand(mon, cmd, &info) < 0) {
VIR_FREE(cmd);
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("cannot run monitor command to relocate graphics client"));
return -1;
}
VIR_FREE(cmd);
VIR_FREE(info);
return 0;
}
int qemuMonitorTextAddUSBDisk(qemuMonitorPtr mon,
const char *path)
{
char *cmd = NULL;
char *safepath;
int ret = -1;
char *info = NULL;
safepath = qemuMonitorEscapeArg(path);
if (!safepath) {
virReportOOMError();
return -1;
}
if (virAsprintf(&cmd, "usb_add disk:%s", safepath) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &info) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("cannot run monitor command to add usb disk"));
goto cleanup;
}
/* If the command failed qemu prints:
* Could not add ... */
if (strstr(info, "Could not add ")) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("unable to add USB disk %s: %s"), path, info);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(safepath);
VIR_FREE(info);
return ret;
}
static int qemuMonitorTextAddUSBDevice(qemuMonitorPtr mon,
const char *addr)
{
char *cmd;
char *reply = NULL;
int ret = -1;
if (virAsprintf(&cmd, "usb_add %s", addr) < 0) {
virReportOOMError();
return -1;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("cannot attach usb device"));
goto cleanup;
}
/* If the command failed qemu prints:
* Could not add ... */
if (strstr(reply, "Could not add ")) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("adding usb device failed"));
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextAddUSBDeviceExact(qemuMonitorPtr mon,
int bus,
int dev)
{
int ret;
char *addr;
if (virAsprintf(&addr, "host:%.3d.%.3d", bus, dev) < 0) {
virReportOOMError();
return -1;
}
ret = qemuMonitorTextAddUSBDevice(mon, addr);
VIR_FREE(addr);
return ret;
}
int qemuMonitorTextAddUSBDeviceMatch(qemuMonitorPtr mon,
int vendor,
int product)
{
int ret;
char *addr;
if (virAsprintf(&addr, "host:%.4x:%.4x", vendor, product) < 0) {
virReportOOMError();
return -1;
}
ret = qemuMonitorTextAddUSBDevice(mon, addr);
VIR_FREE(addr);
return ret;
}
static int
qemuMonitorTextParsePciAddReply(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
const char *reply,
virDomainDevicePCIAddress *addr)
{
char *s, *e;
/* If the command succeeds qemu prints:
* OK bus 0, slot XXX...
* or
* OK domain 0, bus 0, slot XXX
*/
if (!(s = strstr(reply, "OK ")))
return -1;
s += 3;
if (STRPREFIX(s, "domain ")) {
s += strlen("domain ");
if (virStrToLong_ui(s, &e, 10, &addr->domain) == -1) {
VIR_WARN("Unable to parse domain number '%s'", s);
return -1;
}
if (!STRPREFIX(e, ", ")) {
VIR_WARN("Expected ', ' parsing pci_add reply '%s'", s);
return -1;
}
s = e + 2;
}
if (!STRPREFIX(s, "bus ")) {
VIR_WARN("Expected 'bus ' parsing pci_add reply '%s'", s);
return -1;
}
s += strlen("bus ");
if (virStrToLong_ui(s, &e, 10, &addr->bus) == -1) {
VIR_WARN("Unable to parse bus number '%s'", s);
return -1;
}
if (!STRPREFIX(e, ", ")) {
VIR_WARN("Expected ', ' parsing pci_add reply '%s'", s);
return -1;
}
s = e + 2;
if (!STRPREFIX(s, "slot ")) {
VIR_WARN("Expected 'slot ' parsing pci_add reply '%s'", s);
return -1;
}
s += strlen("slot ");
if (virStrToLong_ui(s, &e, 10, &addr->slot) == -1) {
VIR_WARN("Unable to parse slot number '%s'", s);
return -1;
}
return 0;
}
int qemuMonitorTextAddPCIHostDevice(qemuMonitorPtr mon,
virDomainDevicePCIAddress *hostAddr,
virDomainDevicePCIAddress *guestAddr)
{
char *cmd;
char *reply = NULL;
int ret = -1;
memset(guestAddr, 0, sizeof(*guestAddr));
/* XXX hostAddr->domain */
if (virAsprintf(&cmd, "pci_add pci_addr=auto host host=%.2x:%.2x.%.1x",
hostAddr->bus, hostAddr->slot, hostAddr->function) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("cannot attach host pci device"));
goto cleanup;
}
if (strstr(reply, "invalid type: host")) {
qemuReportError(VIR_ERR_NO_SUPPORT, "%s",
_("PCI device assignment is not supported by this version of qemu"));
goto cleanup;
}
if (qemuMonitorTextParsePciAddReply(mon, reply, guestAddr) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("parsing pci_add reply failed: %s"), reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextAddPCIDisk(qemuMonitorPtr mon,
const char *path,
const char *bus,
virDomainDevicePCIAddress *guestAddr)
{
char *cmd = NULL;
char *reply = NULL;
char *safe_path = NULL;
int tryOldSyntax = 0;
int ret = -1;
safe_path = qemuMonitorEscapeArg(path);
if (!safe_path) {
virReportOOMError();
return -1;
}
try_command:
if (virAsprintf(&cmd, "pci_add %s storage file=%s,if=%s",
(tryOldSyntax ? "0": "pci_addr=auto"), safe_path, bus) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("cannot attach %s disk %s"), bus, path);
goto cleanup;
}
if (qemuMonitorTextParsePciAddReply(mon, reply, guestAddr) < 0) {
if (!tryOldSyntax && strstr(reply, "invalid char in expression")) {
VIR_FREE(reply);
VIR_FREE(cmd);
tryOldSyntax = 1;
goto try_command;
}
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("adding %s disk failed %s: %s"), bus, path, reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(safe_path);
VIR_FREE(cmd);
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextAddPCINetwork(qemuMonitorPtr mon,
const char *nicstr,
virDomainDevicePCIAddress *guestAddr)
{
char *cmd;
char *reply = NULL;
int ret = -1;
if (virAsprintf(&cmd, "pci_add pci_addr=auto nic %s", nicstr) < 0) {
virReportOOMError();
return -1;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to add NIC with '%s'"), cmd);
goto cleanup;
}
if (qemuMonitorTextParsePciAddReply(mon, reply, guestAddr) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("parsing pci_add reply failed: %s"), reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(reply);
VIR_FREE(cmd);
return ret;
}
int qemuMonitorTextRemovePCIDevice(qemuMonitorPtr mon,
virDomainDevicePCIAddress *guestAddr)
{
char *cmd = NULL;
char *reply = NULL;
int tryOldSyntax = 0;
int ret = -1;
try_command:
if (tryOldSyntax) {
if (virAsprintf(&cmd, "pci_del 0 %.2x", guestAddr->slot) < 0) {
virReportOOMError();
goto cleanup;
}
} else {
/* XXX function ? */
if (virAsprintf(&cmd, "pci_del pci_addr=%.4x:%.2x:%.2x",
guestAddr->domain, guestAddr->bus, guestAddr->slot) < 0) {
virReportOOMError();
goto cleanup;
}
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("failed to remove PCI device"));
goto cleanup;
}
/* Syntax changed when KVM merged PCI hotplug upstream to QEMU,
* so check for an error message from old KVM indicating the
* need to try the old syntax */
if (!tryOldSyntax &&
strstr(reply, "extraneous characters")) {
tryOldSyntax = 1;
VIR_FREE(reply);
VIR_FREE(cmd);
goto try_command;
}
/* If the command fails due to a wrong slot qemu prints: invalid slot,
* nothing is printed on success */
if (strstr(reply, "invalid slot") ||
strstr(reply, "Invalid pci address")) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to detach PCI device, invalid address %.4x:%.2x:%.2x: %s"),
guestAddr->domain, guestAddr->bus, guestAddr->slot, reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextSendFileHandle(qemuMonitorPtr mon,
const char *fdname,
int fd)
{
char *cmd;
char *reply = NULL;
int ret = -1;
if (virAsprintf(&cmd, "getfd %s", fdname) < 0) {
virReportOOMError();
return -1;
}
if (qemuMonitorHMPCommandWithFd(mon, cmd, fd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to pass fd to qemu with '%s'"), cmd);
goto cleanup;
}
/* If the command isn't supported then qemu prints:
* unknown command: getfd" */
if (strstr(reply, "unknown command:")) {
qemuReportError(VIR_ERR_NO_SUPPORT,
_("qemu does not support sending of file handles: %s"),
reply);
goto cleanup;
}
if (STRNEQ(reply, "")) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unable to send file handle '%s': %s"),
fdname, reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextCloseFileHandle(qemuMonitorPtr mon,
const char *fdname)
{
char *cmd;
char *reply = NULL;
int ret = -1;
if (virAsprintf(&cmd, "closefd %s", fdname) < 0) {
virReportOOMError();
return -1;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to close fd in qemu with '%s'"), cmd);
goto cleanup;
}
/* If the command isn't supported then qemu prints:
* unknown command: getfd" */
if (strstr(reply, "unknown command:")) {
qemuReportError(VIR_ERR_NO_SUPPORT,
_("qemu does not support closing of file handles: %s"),
reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextAddHostNetwork(qemuMonitorPtr mon,
const char *netstr)
{
char *cmd;
char *reply = NULL;
int ret = -1;
if (virAsprintf(&cmd, "host_net_add %s", netstr) < 0) {
virReportOOMError();
return -1;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to add host net with '%s'"), cmd);
goto cleanup;
}
if (STRNEQ(reply, "")) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unable to add host net: %s"),
reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextRemoveHostNetwork(qemuMonitorPtr mon,
int vlan,
const char *netname)
{
char *cmd;
char *reply = NULL;
int ret = -1;
if (virAsprintf(&cmd, "host_net_remove %d %s", vlan, netname) < 0) {
virReportOOMError();
return -1;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to remove host network in qemu with '%s'"), cmd);
goto cleanup;
}
/* XXX error messages here ? */
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextAddNetdev(qemuMonitorPtr mon,
const char *netdevstr)
{
char *cmd;
char *reply = NULL;
int ret = -1;
if (virAsprintf(&cmd, "netdev_add %s", netdevstr) < 0) {
virReportOOMError();
return -1;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to add netdev with '%s'"), cmd);
goto cleanup;
}
/* XXX error messages here ? */
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextRemoveNetdev(qemuMonitorPtr mon,
const char *alias)
{
char *cmd;
char *reply = NULL;
int ret = -1;
if (virAsprintf(&cmd, "netdev_del %s", alias) < 0) {
virReportOOMError();
return -1;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to remove netdev in qemu with '%s'"), cmd);
goto cleanup;
}
/* XXX error messages here ? */
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
return ret;
}
/* Parse the output of "info chardev" and return a hash of pty paths.
*
* Output is:
* foo: filename=pty:/dev/pts/7
* monitor: filename=stdio
* serial0: filename=vc
* parallel0: filename=vc
*
* Non-pty lines are ignored. In the above example, key is 'foo', value is
* '/dev/pty/7'. The hash will contain only a single value.
*/
int qemuMonitorTextGetPtyPaths(qemuMonitorPtr mon,
virHashTablePtr paths)
{
char *reply = NULL;
int ret = -1;
if (qemuMonitorHMPCommand(mon, "info chardev", &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("failed to retrieve chardev info in qemu with 'info chardev'"));
return -1;
}
char *pos; /* The current start of searching */
char *next = reply; /* The start of the next line */
char *eol; /* The character which ends the current line */
char *end = reply + strlen(reply); /* The end of the reply string */
while (next) {
pos = next;
/* Split the output into lines */
eol = memchr(pos, '\n', end - pos);
if (eol == NULL) {
eol = end;
next = NULL;
} else {
next = eol + 1;
}
/* Ignore all whitespace immediately before eol */
while (eol > pos && c_isspace(*(eol-1)))
eol -= 1;
/* Look for 'filename=pty:' */
#define NEEDLE "filename=pty:"
char *needle = memmem(pos, eol - pos, NEEDLE, strlen(NEEDLE));
/* If it's not there we can ignore this line */
if (!needle)
continue;
/* id is everthing from the beginning of the line to the ':'
* find ':' and turn it into a terminator */
char *colon = memchr(pos, ':', needle - pos);
if (colon == NULL)
continue;
*colon = '\0';
char *id = pos;
/* Path is everything after needle to the end of the line */
*eol = '\0';
char *path = strdup(needle + strlen(NEEDLE));
if (path == NULL) {
virReportOOMError();
goto cleanup;
}
if (virHashAddEntry(paths, id, path) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to save chardev path '%s'"),
path);
VIR_FREE(path);
goto cleanup;
}
#undef NEEDLE
}
ret = 0;
cleanup:
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextAttachPCIDiskController(qemuMonitorPtr mon,
const char *bus,
virDomainDevicePCIAddress *guestAddr)
{
char *cmd = NULL;
char *reply = NULL;
int tryOldSyntax = 0;
int ret = -1;
try_command:
if (virAsprintf(&cmd, "pci_add %s storage if=%s",
(tryOldSyntax ? "0": "pci_addr=auto"), bus) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("cannot attach %s disk controller"), bus);
goto cleanup;
}
if (qemuMonitorTextParsePciAddReply(mon, reply, guestAddr) < 0) {
if (!tryOldSyntax && strstr(reply, "invalid char in expression")) {
VIR_FREE(reply);
VIR_FREE(cmd);
tryOldSyntax = 1;
goto try_command;
}
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("adding %s disk controller failed: %s"), bus, reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
return ret;
}
static int
qemudParseDriveAddReply(const char *reply,
virDomainDeviceDriveAddressPtr addr)
{
char *s, *e;
/* If the command succeeds qemu prints:
* OK bus X, unit Y
*/
if (!(s = strstr(reply, "OK ")))
return -1;
s += 3;
if (STRPREFIX(s, "bus ")) {
s += strlen("bus ");
if (virStrToLong_ui(s, &e, 10, &addr->bus) == -1) {
VIR_WARN("Unable to parse bus '%s'", s);
return -1;
}
if (!STRPREFIX(e, ", ")) {
VIR_WARN("Expected ', ' parsing drive_add reply '%s'", s);
return -1;
}
s = e + 2;
}
if (!STRPREFIX(s, "unit ")) {
VIR_WARN("Expected 'unit ' parsing drive_add reply '%s'", s);
return -1;
}
s += strlen("bus ");
if (virStrToLong_ui(s, &e, 10, &addr->unit) == -1) {
VIR_WARN("Unable to parse unit number '%s'", s);
return -1;
}
return 0;
}
int qemuMonitorTextAttachDrive(qemuMonitorPtr mon,
const char *drivestr,
virDomainDevicePCIAddress *controllerAddr,
virDomainDeviceDriveAddress *driveAddr)
{
char *cmd = NULL;
char *reply = NULL;
int ret = -1;
char *safe_str;
int tryOldSyntax = 0;
safe_str = qemuMonitorEscapeArg(drivestr);
if (!safe_str) {
virReportOOMError();
return -1;
}
try_command:
if (virAsprintf(&cmd, "drive_add %s%.2x:%.2x:%.2x %s",
(tryOldSyntax ? "" : "pci_addr="),
controllerAddr->domain, controllerAddr->bus,
controllerAddr->slot, safe_str) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to attach drive '%s'"), drivestr);
goto cleanup;
}
if (strstr(reply, "unknown command:")) {
qemuReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("drive hotplug is not supported"));
goto cleanup;
}
if (qemudParseDriveAddReply(reply, driveAddr) < 0) {
if (!tryOldSyntax && strstr(reply, "invalid char in expression")) {
VIR_FREE(reply);
VIR_FREE(cmd);
tryOldSyntax = 1;
goto try_command;
}
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("adding %s disk failed: %s"), drivestr, reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
VIR_FREE(safe_str);
return ret;
}
/*
* The format we're after looks like this
*
* (qemu) info pci
* Bus 0, device 0, function 0:
* Host bridge: PCI device 8086:1237
* id ""
* Bus 0, device 1, function 0:
* ISA bridge: PCI device 8086:7000
* id ""
* Bus 0, device 1, function 1:
* IDE controller: PCI device 8086:7010
* BAR4: I/O at 0xc000 [0xc00f].
* id ""
* Bus 0, device 1, function 3:
* Bridge: PCI device 8086:7113
* IRQ 9.
* id ""
* Bus 0, device 2, function 0:
* VGA controller: PCI device 1013:00b8
* BAR0: 32 bit prefetchable memory at 0xf0000000 [0xf1ffffff].
* BAR1: 32 bit memory at 0xf2000000 [0xf2000fff].
* id ""
* Bus 0, device 3, function 0:
* Ethernet controller: PCI device 8086:100e
* IRQ 11.
* BAR0: 32 bit memory at 0xf2020000 [0xf203ffff].
* BAR1: I/O at 0xc040 [0xc07f].
* id ""
*
* Of this, we're interesting in the vendor/product ID
* and the bus/device/function data.
*/
#define CHECK_END(p) if (!(p)) break;
#define SKIP_TO(p, lbl) \
(p) = strstr((p), (lbl)); \
if (p) \
(p) += strlen(lbl);
#define GET_INT(p, base, val) \
if (virStrToLong_ui((p), &(p), (base), &(val)) < 0) { \
qemuReportError(VIR_ERR_OPERATION_FAILED, \
_("cannot parse value for %s"), #val); \
break; \
}
#define SKIP_SPACE(p) \
while (*(p) == ' ') (p)++;
int qemuMonitorTextGetAllPCIAddresses(qemuMonitorPtr mon,
qemuMonitorPCIAddress **retaddrs)
{
char *reply;
qemuMonitorPCIAddress *addrs = NULL;
int naddrs = 0;
char *p;
*retaddrs = NULL;
if (qemuMonitorHMPCommand(mon, "info pci", &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("cannot query PCI addresses"));
return -1;
}
p = reply;
while (p) {
unsigned int bus, slot, func, vendor, product;
SKIP_TO(p, " Bus");
CHECK_END(p);
SKIP_SPACE(p);
GET_INT(p, 10, bus);
CHECK_END(p);
SKIP_TO(p, ", device");
CHECK_END(p);
SKIP_SPACE(p);
GET_INT(p, 10, slot);
CHECK_END(p);
SKIP_TO(p, ", function");
CHECK_END(p);
SKIP_SPACE(p);
GET_INT(p, 10, func);
CHECK_END(p);
SKIP_TO(p, "PCI device");
CHECK_END(p);
SKIP_SPACE(p);
GET_INT(p, 16, vendor);
CHECK_END(p);
if (*p != ':')
break;
p++;
GET_INT(p, 16, product);
if (VIR_REALLOC_N(addrs, naddrs+1) < 0) {
virReportOOMError();
goto error;
}
addrs[naddrs].addr.domain = 0;
addrs[naddrs].addr.bus = bus;
addrs[naddrs].addr.slot = slot;
addrs[naddrs].addr.function = func;
addrs[naddrs].vendor = vendor;
addrs[naddrs].product = product;
naddrs++;
VIR_DEBUG("Got dev %d:%d:%d %x:%x", bus, slot, func, vendor, product);
}
VIR_FREE(reply);
*retaddrs = addrs;
return naddrs;
error:
VIR_FREE(addrs);
VIR_FREE(reply);
return -1;
}
#undef GET_INT
#undef SKIP_SPACE
#undef CHECK_END
#undef SKIP_TO
int qemuMonitorTextDelDevice(qemuMonitorPtr mon,
const char *devalias)
{
char *cmd = NULL;
char *reply = NULL;
char *safedev;
int ret = -1;
if (!(safedev = qemuMonitorEscapeArg(devalias))) {
virReportOOMError();
goto cleanup;
}
if (virAsprintf(&cmd, "device_del %s", safedev) < 0) {
virReportOOMError();
goto cleanup;
}
VIR_DEBUG("TextDelDevice devalias=%s", devalias);
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("cannot detach %s device"), devalias);
goto cleanup;
}
if (STRNEQ(reply, "")) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("detaching %s device failed: %s"), devalias, reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
VIR_FREE(safedev);
return ret;
}
int qemuMonitorTextAddDevice(qemuMonitorPtr mon,
const char *devicestr)
{
char *cmd = NULL;
char *reply = NULL;
char *safedev;
int ret = -1;
if (!(safedev = qemuMonitorEscapeArg(devicestr))) {
virReportOOMError();
goto cleanup;
}
if (virAsprintf(&cmd, "device_add %s", safedev) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("cannot attach %s device"), devicestr);
goto cleanup;
}
/* If the host device is hotpluged first time, qemu will output
* husb: using %s file-system with %s if the command succeeds.
*/
if (STRPREFIX(reply, "husb: using")) {
ret = 0;
goto cleanup;
}
/* Otherwise, if the command succeeds, no output is sent. So
* any non-empty string shows an error */
if (STRNEQ(reply, "")) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("adding %s device failed: %s"), devicestr, reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
VIR_FREE(safedev);
return ret;
}
int qemuMonitorTextAddDrive(qemuMonitorPtr mon,
const char *drivestr)
{
char *cmd = NULL;
char *reply = NULL;
int ret = -1;
char *safe_str;
safe_str = qemuMonitorEscapeArg(drivestr);
if (!safe_str) {
virReportOOMError();
return -1;
}
/* 'dummy' here is just a placeholder since there is no PCI
* address required when attaching drives to a controller */
if (virAsprintf(&cmd, "drive_add dummy %s", safe_str) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to add drive '%s'"), drivestr);
goto cleanup;
}
if (strstr(reply, "unknown command:")) {
qemuReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("drive hotplug is not supported"));
goto cleanup;
}
if (strstr(reply, "could not open disk image")) {
qemuReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("open disk image file failed"));
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
VIR_FREE(safe_str);
return ret;
}
/* Attempts to remove a host drive.
* Returns 1 if unsupported, 0 if ok, and -1 on other failure */
int qemuMonitorTextDriveDel(qemuMonitorPtr mon,
const char *drivestr)
{
char *cmd = NULL;
char *reply = NULL;
char *safedev;
int ret = -1;
VIR_DEBUG("TextDriveDel drivestr=%s", drivestr);
if (!(safedev = qemuMonitorEscapeArg(drivestr))) {
virReportOOMError();
goto cleanup;
}
if (virAsprintf(&cmd, "drive_del %s", safedev) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("cannot delete %s drive"), drivestr);
goto cleanup;
}
if (strstr(reply, "unknown command:")) {
VIR_ERROR(_("deleting drive is not supported. "
"This may leak data if disk is reassigned"));
ret = 1;
goto cleanup;
/* (qemu) drive_del wark
* Device 'wark' not found */
} else if (STRPREFIX(reply, "Device '") && (strstr(reply, "not found"))) {
/* NB: device not found errors mean the drive was auto-deleted and we
* ignore the error */
} else if (STRNEQ(reply, "")) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("deleting %s drive failed: %s"), drivestr, reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
VIR_FREE(safedev);
return ret;
}
int qemuMonitorTextSetDrivePassphrase(qemuMonitorPtr mon,
const char *alias,
const char *passphrase)
{
char *cmd = NULL;
char *reply = NULL;
int ret = -1;
char *safe_str;
safe_str = qemuMonitorEscapeArg(passphrase);
if (!safe_str) {
virReportOOMError();
return -1;
}
if (virAsprintf(&cmd, "block_passwd %s%s \"%s\"",
QEMU_DRIVE_HOST_PREFIX, alias, safe_str) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("failed to set disk password"));
goto cleanup;
}
if (strstr(reply, "unknown command:")) {
qemuReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("setting disk password is not supported"));
goto cleanup;
} else if (strstr(reply, "The entered password is invalid")) {
qemuReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("the disk password is incorrect"));
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
VIR_FREE(safe_str);
return ret;
}
int qemuMonitorTextCreateSnapshot(qemuMonitorPtr mon, const char *name)
{
char *cmd = NULL;
char *reply = NULL;
int ret = -1;
char *safename;
if (!(safename = qemuMonitorEscapeArg(name)) ||
virAsprintf(&cmd, "savevm \"%s\"", safename) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply)) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to take snapshot using command '%s'"), cmd);
goto cleanup;
}
if (strstr(reply, "Error while creating snapshot") != NULL) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("Failed to take snapshot: %s"), reply);
goto cleanup;
}
else if (strstr(reply, "No block device can accept snapshots") != NULL) {
qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("this domain does not have a device to take snapshots"));
goto cleanup;
}
else if (strstr(reply, "Could not open VM state file") != NULL) {
qemuReportError(VIR_ERR_OPERATION_FAILED, "%s", reply);
goto cleanup;
}
else if (strstr(reply, "Error") != NULL
&& strstr(reply, "while writing VM") != NULL) {
qemuReportError(VIR_ERR_OPERATION_FAILED, "%s", reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(safename);
VIR_FREE(cmd);
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextLoadSnapshot(qemuMonitorPtr mon, const char *name)
{
char *cmd = NULL;
char *reply = NULL;
int ret = -1;
char *safename;
if (!(safename = qemuMonitorEscapeArg(name)) ||
virAsprintf(&cmd, "loadvm \"%s\"", safename) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply)) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to restore snapshot using command '%s'"),
cmd);
goto cleanup;
}
if (strstr(reply, "No block device supports snapshots") != NULL) {
qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("this domain does not have a device to load snapshots"));
goto cleanup;
}
else if (strstr(reply, "Could not find snapshot") != NULL) {
qemuReportError(VIR_ERR_OPERATION_INVALID,
_("the snapshot '%s' does not exist, and was not loaded"),
name);
goto cleanup;
}
else if (strstr(reply, "Snapshots not supported on device") != NULL) {
qemuReportError(VIR_ERR_OPERATION_INVALID, "%s", reply);
goto cleanup;
}
else if (strstr(reply, "Could not open VM state file") != NULL) {
qemuReportError(VIR_ERR_OPERATION_FAILED, "%s", reply);
goto cleanup;
}
else if (strstr(reply, "Error") != NULL
&& strstr(reply, "while loading VM state") != NULL) {
qemuReportError(VIR_ERR_OPERATION_FAILED, "%s", reply);
goto cleanup;
}
else if (strstr(reply, "Error") != NULL
&& strstr(reply, "while activating snapshot on") != NULL) {
qemuReportError(VIR_ERR_OPERATION_FAILED, "%s", reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(safename);
VIR_FREE(cmd);
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextDeleteSnapshot(qemuMonitorPtr mon, const char *name)
{
char *cmd = NULL;
char *reply = NULL;
int ret = -1;
char *safename;
if (!(safename = qemuMonitorEscapeArg(name)) ||
virAsprintf(&cmd, "delvm \"%s\"", safename) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply)) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to delete snapshot using command '%s'"),
cmd);
goto cleanup;
}
if (strstr(reply, "No block device supports snapshots") != NULL) {
qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("this domain does not have a device to delete snapshots"));
goto cleanup;
}
else if (strstr(reply, "Snapshots not supported on device") != NULL) {
qemuReportError(VIR_ERR_OPERATION_INVALID, "%s", reply);
goto cleanup;
}
else if (strstr(reply, "Error") != NULL
&& strstr(reply, "while deleting snapshot") != NULL) {
qemuReportError(VIR_ERR_OPERATION_FAILED, "%s", reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(safename);
VIR_FREE(cmd);
VIR_FREE(reply);
return ret;
}
int qemuMonitorTextArbitraryCommand(qemuMonitorPtr mon, const char *cmd,
char **reply)
{
char *safecmd = NULL;
int ret;
if (!(safecmd = qemuMonitorEscapeArg(cmd))) {
virReportOOMError();
return -1;
}
ret = qemuMonitorHMPCommand(mon, safecmd, reply);
if (ret != 0)
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to run cmd '%s'"), safecmd);
VIR_FREE(safecmd);
return ret;
}
int qemuMonitorTextInjectNMI(qemuMonitorPtr mon)
{
const char *cmd = "inject-nmi";
char *reply = NULL;
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0)
goto fail;
if (strstr(reply, "unknown command") != NULL) {
VIR_FREE(reply);
/* fallback to 'nmi' if qemu has not supported "inject-nmi" yet. */
cmd = "nmi 0";
reply = NULL;
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0)
goto fail;
}
VIR_FREE(reply);
return 0;
fail:
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to inject NMI using command '%s'"),
cmd);
return -1;
}
/* Returns -1 on error, -2 if not supported */
int qemuMonitorTextScreendump(qemuMonitorPtr mon, const char *file)
{
char *cmd = NULL;
char *reply = NULL;
int ret = -1;
if (virAsprintf(&cmd, "screendump %s", file) < 0){
virReportOOMError();
goto cleanup;
}
if (qemuMonitorHMPCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("taking screenshot failed"));
goto cleanup;
}
if (strstr(reply, "unknown command:")) {
ret = -2;
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(reply);
VIR_FREE(cmd);
return ret;
}
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