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libvirt/qemud/driver.c
Daniel P. Berrange ec834baa9c Remove use of libsysfs from bridge code
2007-06-26 23:01:54 +00:00

2566 lines
77 KiB
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/*
* driver.c: core driver methods for managing qemu guests
*
* Copyright (C) 2006, 2007 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>
#define _GNU_SOURCE /* for asprintf */
#include <sys/types.h>
#include <sys/poll.h>
#include <dirent.h>
#include <limits.h>
#include <string.h>
#include <stdio.h>
#include <strings.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/utsname.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
#include <paths.h>
#include <ctype.h>
#include <pwd.h>
#include <stdio.h>
#include <sys/wait.h>
#include <libvirt/virterror.h>
#include "event.h"
#include "../src/buf.h"
#include "driver.h"
#include "conf.h"
static int qemudSetCloseExec(int fd) {
int flags;
if ((flags = fcntl(fd, F_GETFD)) < 0)
goto error;
flags |= FD_CLOEXEC;
if ((fcntl(fd, F_SETFD, flags)) < 0)
goto error;
return 0;
error:
qemudLog(QEMUD_ERR, "Failed to set close-on-exec file descriptor flag");
return -1;
}
static int qemudSetNonBlock(int fd) {
int flags;
if ((flags = fcntl(fd, F_GETFL)) < 0)
goto error;
flags |= O_NONBLOCK;
if ((fcntl(fd, F_SETFL, flags)) < 0)
goto error;
return 0;
error:
qemudLog(QEMUD_ERR, "Failed to set non-blocking file descriptor flag");
return -1;
}
#define virEventAddHandle(fd, events, cb, opaque) virEventAddHandleImpl(fd, events, cb, opaque)
#define virEventRemoveHandle(fd) virEventRemoveHandleImpl(fd)
static void qemudDispatchVMEvent(int fd, int events, void *opaque);
int qemudStartVMDaemon(struct qemud_driver *driver,
struct qemud_vm *vm);
int qemudShutdownVMDaemon(struct qemud_driver *driver,
struct qemud_vm *vm);
int qemudStartNetworkDaemon(struct qemud_driver *driver,
struct qemud_network *network);
int qemudShutdownNetworkDaemon(struct qemud_driver *driver,
struct qemud_network *network);
struct qemud_driver *qemu_driver = NULL;
static
void qemudAutostartConfigs(struct qemud_driver *driver) {
struct qemud_network *network;
struct qemud_vm *vm;
network = driver->networks;
while (network != NULL) {
struct qemud_network *next = network->next;
if (network->autostart &&
!qemudIsActiveNetwork(network) &&
qemudStartNetworkDaemon(driver, network) < 0) {
virErrorPtr err = virGetLastError();
qemudLog(QEMUD_ERR, "Failed to autostart network '%s': %s",
network->def->name, err->message);
}
network = next;
}
vm = driver->vms;
while (vm != NULL) {
struct qemud_vm *next = vm->next;
if (vm->autostart &&
!qemudIsActiveVM(vm) &&
qemudStartVMDaemon(driver, vm) < 0) {
virErrorPtr err = virGetLastError();
qemudLog(QEMUD_ERR, "Failed to autostart VM '%s': %s",
vm->def->name, err->message);
}
vm = next;
}
}
int qemudStartup(void) {
uid_t uid = geteuid();
struct passwd *pw;
char *base = NULL;
if (!(qemu_driver = calloc(1, sizeof(struct qemud_driver)))) {
return -1;
}
/* Don't have a dom0 so start from 1 */
qemu_driver->nextvmid = 1;
if (!uid) {
if (snprintf(qemu_driver->logDir, PATH_MAX, "%s/log/libvirt/qemu", LOCAL_STATE_DIR) >= PATH_MAX)
goto snprintf_error;
if ((base = strdup (SYSCONF_DIR "/libvirt/qemu")) == NULL)
goto out_of_memory;
} else {
if (!(pw = getpwuid(uid))) {
qemudLog(QEMUD_ERR, "Failed to find user record for uid '%d': %s",
uid, strerror(errno));
goto out_of_memory;
}
if (snprintf(qemu_driver->logDir, PATH_MAX, "%s/.libvirt/qemu/log", pw->pw_dir) >= PATH_MAX)
goto snprintf_error;
if (asprintf (&base, "%s/.libvirt/qemu", pw->pw_dir) == -1) {
qemudLog (QEMUD_ERR, "out of memory in asprintf");
goto out_of_memory;
}
}
/* Configuration paths are either ~/.libvirt/qemu/... (session) or
* /etc/libvirt/qemu/... (system).
*/
if (asprintf (&qemu_driver->configDir, "%s", base) == -1)
goto out_of_memory;
if (asprintf (&qemu_driver->autostartDir, "%s/autostart", base) == -1)
goto out_of_memory;
if (asprintf (&qemu_driver->networkConfigDir, "%s/networks", base) == -1)
goto out_of_memory;
if (asprintf (&qemu_driver->networkAutostartDir, "%s/networks/autostart",
base) == -1)
goto out_of_memory;
if (qemudScanConfigs(qemu_driver) < 0)
qemudShutdown();
qemudAutostartConfigs(qemu_driver);
return 0;
snprintf_error:
qemudLog(QEMUD_ERR, "Resulting path to long for buffer in qemudInitPaths()");
return -1;
out_of_memory:
qemudLog (QEMUD_ERR, "qemudStartup: out of memory");
if (base) free (base);
free(qemu_driver);
qemu_driver = NULL;
return -1;
}
int qemudReload(void) {
qemudScanConfigs(qemu_driver);
if (qemu_driver->iptables) {
qemudLog(QEMUD_INFO, "Reloading iptables rules");
iptablesReloadRules(qemu_driver->iptables);
}
qemudAutostartConfigs(qemu_driver);
return 0;
}
int qemudActive(void) {
/* If we've any active networks or guests, then we
* mark this driver as active
*/
if (qemu_driver->nactivenetworks &&
qemu_driver->nactivevms)
return 1;
/* Otherwise we're happy to deal with a shutdown */
return 0;
}
int qemudShutdown() {
struct qemud_vm *vm;
struct qemud_network *network;
if (!qemu_driver)
return -1;
/* shutdown active VMs */
vm = qemu_driver->vms;
while (vm) {
struct qemud_vm *next = vm->next;
if (qemudIsActiveVM(vm))
qemudShutdownVMDaemon(qemu_driver, vm);
vm = next;
}
/* free inactive VMs */
vm = qemu_driver->vms;
while (vm) {
struct qemud_vm *next = vm->next;
qemudFreeVM(vm);
vm = next;
}
qemu_driver->vms = NULL;
qemu_driver->nactivevms = 0;
qemu_driver->ninactivevms = 0;
/* shutdown active networks */
network = qemu_driver->networks;
while (network) {
struct qemud_network *next = network->next;
if (qemudIsActiveNetwork(network))
qemudShutdownNetworkDaemon(qemu_driver, network);
network = next;
}
/* free inactive networks */
network = qemu_driver->networks;
while (network) {
struct qemud_network *next = network->next;
qemudFreeNetwork(network);
network = next;
}
qemu_driver->networks = NULL;
qemu_driver->nactivenetworks = 0;
qemu_driver->ninactivenetworks = 0;
if (qemu_driver->configDir)
free(qemu_driver->configDir);
if (qemu_driver->autostartDir)
free(qemu_driver->autostartDir);
if (qemu_driver->networkConfigDir)
free(qemu_driver->networkConfigDir);
if (qemu_driver->networkAutostartDir)
free(qemu_driver->networkAutostartDir);
if (qemu_driver->brctl)
brShutdown(qemu_driver->brctl);
if (qemu_driver->iptables)
iptablesContextFree(qemu_driver->iptables);
free(qemu_driver);
qemu_driver = NULL;
return 0;
}
static int
qemudExec(char **argv,
int *retpid, int *outfd, int *errfd) {
int pid, null;
int pipeout[2] = {-1,-1};
int pipeerr[2] = {-1,-1};
if ((null = open(_PATH_DEVNULL, O_RDONLY)) < 0) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "cannot open %s : %s",
_PATH_DEVNULL, strerror(errno));
goto cleanup;
}
if ((outfd != NULL && pipe(pipeout) < 0) ||
(errfd != NULL && pipe(pipeerr) < 0)) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "cannot create pipe : %s",
strerror(errno));
goto cleanup;
}
if ((pid = fork()) < 0) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "cannot fork child process : %s",
strerror(errno));
goto cleanup;
}
if (pid) { /* parent */
close(null);
if (outfd) {
close(pipeout[1]);
qemudSetNonBlock(pipeout[0]);
qemudSetCloseExec(pipeout[0]);
*outfd = pipeout[0];
}
if (errfd) {
close(pipeerr[1]);
qemudSetNonBlock(pipeerr[0]);
qemudSetCloseExec(pipeerr[0]);
*errfd = pipeerr[0];
}
*retpid = pid;
return 0;
}
/* child */
if (pipeout[0] > 0 && close(pipeout[0]) < 0)
_exit(1);
if (pipeerr[0] > 0 && close(pipeerr[0]) < 0)
_exit(1);
if (dup2(null, STDIN_FILENO) < 0)
_exit(1);
if (dup2(pipeout[1] > 0 ? pipeout[1] : null, STDOUT_FILENO) < 0)
_exit(1);
if (dup2(pipeerr[1] > 0 ? pipeerr[1] : null, STDERR_FILENO) < 0)
_exit(1);
close(null);
if (pipeout[1] > 0)
close(pipeout[1]);
if (pipeerr[1] > 0)
close(pipeerr[1]);
execvp(argv[0], argv);
_exit(1);
return 0;
cleanup:
if (pipeerr[0] > 0)
close(pipeerr[0]);
if (pipeerr[1] > 0)
close(pipeerr[1]);
if (pipeout[0] > 0)
close(pipeout[0]);
if (pipeout[1] > 0)
close(pipeout[1]);
if (null > 0)
close(null);
return -1;
}
/* Return -1 for error, 1 to continue reading and 0 for success */
typedef int qemudHandlerMonitorOutput(struct qemud_driver *driver,
struct qemud_vm *vm,
const char *output,
int fd);
static int
qemudReadMonitorOutput(struct qemud_driver *driver,
struct qemud_vm *vm,
int fd,
char *buf,
int buflen,
qemudHandlerMonitorOutput func,
const char *what)
{
#define MONITOR_TIMEOUT 3000
int got = 0;
buf[0] = '\0';
/* Consume & discard the initial greeting */
while (got < (buflen-1)) {
int ret;
ret = read(fd, buf+got, buflen-got-1);
if (ret == 0) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"QEMU quit during %s startup\n%s", what, buf);
return -1;
}
if (ret < 0) {
struct pollfd pfd = { .fd = fd, .events = POLLIN };
if (errno == EINTR)
continue;
if (errno != EAGAIN) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"Failure while reading %s startup output: %s",
what, strerror(errno));
return -1;
}
ret = poll(&pfd, 1, MONITOR_TIMEOUT);
if (ret == 0) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"Timed out while reading %s startup output", what);
return -1;
} else if (ret == -1) {
if (errno != EINTR) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"Failure while reading %s startup output: %s",
what, strerror(errno));
return -1;
}
} else {
/* Make sure we continue loop & read any further data
available before dealing with EOF */
if (pfd.revents & (POLLIN | POLLHUP))
continue;
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"Failure while reading %s startup output", what);
return -1;
}
} else {
got += ret;
buf[got] = '\0';
if ((ret = func(driver, vm, buf, fd)) != 1)
return ret;
}
}
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"Out of space while reading %s startup output", what);
return -1;
#undef MONITOR_TIMEOUT
}
static int
qemudCheckMonitorPrompt(struct qemud_driver *driver ATTRIBUTE_UNUSED,
struct qemud_vm *vm,
const char *output,
int fd)
{
if (strstr(output, "(qemu) ") == NULL)
return 1; /* keep reading */
vm->monitor = fd;
return 0;
}
static int qemudOpenMonitor(struct qemud_driver *driver, struct qemud_vm *vm, const char *monitor) {
int monfd;
char buf[1024];
int ret = -1;
if (!(monfd = open(monitor, O_RDWR))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"Unable to open monitor path %s", monitor);
return -1;
}
if (qemudSetCloseExec(monfd) < 0) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"Unable to set monitor close-on-exec flag");
goto error;
}
if (qemudSetNonBlock(monfd) < 0) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"Unable to put monitor into non-blocking mode");
goto error;
}
ret = qemudReadMonitorOutput(driver, vm, monfd,
buf, sizeof(buf),
qemudCheckMonitorPrompt,
"monitor");
error:
close(monfd);
return ret;
}
static int qemudExtractMonitorPath(const char *haystack, char *path, int pathmax) {
static const char needle[] = "char device redirected to";
char *tmp;
if (!(tmp = strstr(haystack, needle)))
return -1;
strncpy(path, tmp+sizeof(needle), pathmax-1);
path[pathmax-1] = '\0';
while (*path) {
/*
* The monitor path ends at first whitespace char
* so lets search for it & NULL terminate it there
*/
if (isspace(*path)) {
*path = '\0';
return 0;
}
path++;
}
/*
* We found a path, but didn't find any whitespace,
* so it must be still incomplete - we should at
* least see a \n
*/
return -1;
}
static int
qemudOpenMonitorPath(struct qemud_driver *driver,
struct qemud_vm *vm,
const char *output,
int fd ATTRIBUTE_UNUSED)
{
char monitor[PATH_MAX];
if (qemudExtractMonitorPath(output, monitor, sizeof(monitor)) < 0)
return 1; /* keep reading */
return qemudOpenMonitor(driver, vm, monitor);
}
static int qemudWaitForMonitor(struct qemud_driver *driver, struct qemud_vm *vm) {
char buf[1024]; /* Plenty of space to get startup greeting */
int ret = qemudReadMonitorOutput(driver, vm, vm->stderr,
buf, sizeof(buf),
qemudOpenMonitorPath,
"console");
buf[sizeof(buf)-1] = '\0';
retry:
if (write(vm->logfile, buf, strlen(buf)) < 0) {
/* Log, but ignore failures to write logfile for VM */
if (errno == EINTR)
goto retry;
qemudLog(QEMUD_WARN, "Unable to log VM console data: %s",
strerror(errno));
}
return ret;
}
static int qemudNextFreeVNCPort(struct qemud_driver *driver ATTRIBUTE_UNUSED) {
int i;
for (i = 5900 ; i < 6000 ; i++) {
int fd;
int reuse = 1;
struct sockaddr_in addr;
addr.sin_family = AF_INET;
addr.sin_port = htons(i);
addr.sin_addr.s_addr = htonl(INADDR_ANY);
fd = socket(PF_INET, SOCK_STREAM, 0);
if (fd < 0)
return -1;
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*)&reuse, sizeof(reuse)) < 0) {
close(fd);
break;
}
if (bind(fd, (struct sockaddr*)&addr, sizeof(addr)) == 0) {
/* Not in use, lets grab it */
close(fd);
return i;
}
close(fd);
if (errno == EADDRINUSE) {
/* In use, try next */
continue;
}
/* Some other bad failure, get out.. */
break;
}
return -1;
}
int qemudStartVMDaemon(struct qemud_driver *driver,
struct qemud_vm *vm) {
char **argv = NULL, **tmp;
int i;
char logfile[PATH_MAX];
if (qemudIsActiveVM(vm)) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"VM is already active");
return -1;
}
if (vm->def->vncPort < 0) {
int port = qemudNextFreeVNCPort(driver);
if (port < 0) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"Unable to find an unused VNC port");
return -1;
}
vm->def->vncActivePort = port;
} else
vm->def->vncActivePort = vm->def->vncPort;
if ((strlen(driver->logDir) + /* path */
1 + /* Separator */
strlen(vm->def->name) + /* basename */
4 + /* suffix .log */
1 /* NULL */) > PATH_MAX) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"config file path too long: %s/%s.log",
driver->logDir, vm->def->name);
return -1;
}
strcpy(logfile, driver->logDir);
strcat(logfile, "/");
strcat(logfile, vm->def->name);
strcat(logfile, ".log");
if (qemudEnsureDir(driver->logDir) < 0) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"cannot create log directory %s: %s",
driver->logDir, strerror(errno));
return -1;
}
if ((vm->logfile = open(logfile, O_CREAT | O_TRUNC | O_WRONLY,
S_IRUSR | S_IWUSR)) < 0) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to create logfile %s: %s",
logfile, strerror(errno));
return -1;
}
if (qemudBuildCommandLine(driver, vm, &argv) < 0) {
close(vm->logfile);
vm->logfile = -1;
return -1;
}
tmp = argv;
while (*tmp) {
if (write(vm->logfile, *tmp, strlen(*tmp)) < 0)
qemudLog(QEMUD_WARN, "Unable to write argv to logfile %d: %s",
errno, strerror(errno));
if (write(vm->logfile, " ", 1) < 0)
qemudLog(QEMUD_WARN, "Unable to write argv to logfile %d: %s",
errno, strerror(errno));
tmp++;
}
if (write(vm->logfile, "\n", 1) < 0)
qemudLog(QEMUD_WARN, "Unable to write argv to logfile %d: %s",
errno, strerror(errno));
if (qemudExec(argv, &vm->pid, &vm->stdout, &vm->stderr) == 0) {
vm->id = driver->nextvmid++;
vm->state = VIR_DOMAIN_RUNNING;
driver->ninactivevms--;
driver->nactivevms++;
}
for (i = 0 ; argv[i] ; i++)
free(argv[i]);
free(argv);
if (vm->tapfds) {
for (i = 0; vm->tapfds[i] != -1; i++) {
close(vm->tapfds[i]);
vm->tapfds[i] = -1;
}
free(vm->tapfds);
vm->tapfds = NULL;
vm->ntapfds = 0;
}
if (virEventAddHandle(vm->stdout,
POLLIN | POLLERR | POLLHUP,
qemudDispatchVMEvent,
driver) < 0) {
qemudShutdownVMDaemon(driver, vm);
return -1;
}
if (virEventAddHandle(vm->stderr,
POLLIN | POLLERR | POLLHUP,
qemudDispatchVMEvent,
driver) < 0) {
qemudShutdownVMDaemon(driver, vm);
return -1;
}
if (qemudWaitForMonitor(driver, vm) < 0) {
qemudShutdownVMDaemon(driver, vm);
return -1;
}
return 0;
}
static int qemudVMData(struct qemud_driver *driver ATTRIBUTE_UNUSED,
struct qemud_vm *vm, int fd) {
char buf[4096];
if (vm->pid < 0)
return 0;
for (;;) {
int ret = read(fd, buf, sizeof(buf)-1);
if (ret < 0) {
if (errno == EAGAIN)
return 0;
return -1;
}
if (ret == 0) {
return 0;
}
buf[ret] = '\0';
retry:
if (write(vm->logfile, buf, ret) < 0) {
/* Log, but ignore failures to write logfile for VM */
if (errno == EINTR)
goto retry;
qemudLog(QEMUD_WARN, "Unable to log VM console data: %s",
strerror(errno));
}
}
qemudAutostartConfigs(qemu_driver);
}
int qemudShutdownVMDaemon(struct qemud_driver *driver, struct qemud_vm *vm) {
if (!qemudIsActiveVM(vm))
return 0;
qemudLog(QEMUD_INFO, "Shutting down VM '%s'", vm->def->name);
kill(vm->pid, SIGTERM);
qemudVMData(driver, vm, vm->stdout);
qemudVMData(driver, vm, vm->stderr);
virEventRemoveHandle(vm->stdout);
virEventRemoveHandle(vm->stderr);
if (close(vm->logfile) < 0)
qemudLog(QEMUD_WARN, "Unable to close logfile %d: %s", errno, strerror(errno));
close(vm->stdout);
close(vm->stderr);
if (vm->monitor != -1)
close(vm->monitor);
vm->logfile = -1;
vm->stdout = -1;
vm->stderr = -1;
vm->monitor = -1;
if (waitpid(vm->pid, NULL, WNOHANG) != vm->pid) {
kill(vm->pid, SIGKILL);
if (waitpid(vm->pid, NULL, 0) != vm->pid) {
qemudLog(QEMUD_WARN, "Got unexpected pid, damn");
}
}
vm->pid = -1;
vm->id = -1;
vm->state = VIR_DOMAIN_SHUTOFF;
if (vm->newDef) {
qemudFreeVMDef(vm->def);
vm->def = vm->newDef;
vm->newDef = NULL;
}
driver->nactivevms--;
driver->ninactivevms++;
if (!vm->configFile[0])
qemudRemoveInactiveVM(driver, vm);
return 0;
}
static int qemudDispatchVMLog(struct qemud_driver *driver, struct qemud_vm *vm, int fd) {
if (qemudVMData(driver, vm, fd) < 0)
if (qemudShutdownVMDaemon(driver, vm) < 0)
return -1;
return 0;
}
static int qemudDispatchVMFailure(struct qemud_driver *driver, struct qemud_vm *vm,
int fd ATTRIBUTE_UNUSED) {
if (qemudShutdownVMDaemon(driver, vm) < 0)
return -1;
return 0;
}
static int
qemudBuildDnsmasqArgv(struct qemud_network *network,
char ***argv) {
int i, len;
char buf[PATH_MAX];
struct qemud_dhcp_range_def *range;
len =
1 + /* dnsmasq */
1 + /* --keep-in-foreground */
1 + /* --strict-order */
1 + /* --bind-interfaces */
2 + /* --pid-file "" */
2 + /* --conf-file "" */
/*2 + *//* --interface virbr0 */
2 + /* --except-interface lo */
2 + /* --listen-address 10.0.0.1 */
1 + /* --dhcp-leasefile=path */
(2 * network->def->nranges) + /* --dhcp-range 10.0.0.2,10.0.0.254 */
1; /* NULL */
if (!(*argv = calloc(len, sizeof(char *))))
goto no_memory;
#define APPEND_ARG(v, n, s) do { \
if (!((v)[(n)] = strdup(s))) \
goto no_memory; \
} while (0)
i = 0;
APPEND_ARG(*argv, i++, "dnsmasq");
APPEND_ARG(*argv, i++, "--keep-in-foreground");
/*
* Needed to ensure dnsmasq uses same algorithm for processing
* multiple namedriver entries in /etc/resolv.conf as GLibC.
*/
APPEND_ARG(*argv, i++, "--strict-order");
APPEND_ARG(*argv, i++, "--bind-interfaces");
APPEND_ARG(*argv, i++, "--pid-file");
APPEND_ARG(*argv, i++, "");
APPEND_ARG(*argv, i++, "--conf-file");
APPEND_ARG(*argv, i++, "");
/*
* XXX does not actually work, due to some kind of
* race condition setting up ipv6 addresses on the
* interface. A sleep(10) makes it work, but that's
* clearly not practical
*
* APPEND_ARG(*argv, i++, "--interface");
* APPEND_ARG(*argv, i++, network->def->bridge);
*/
APPEND_ARG(*argv, i++, "--listen-address");
APPEND_ARG(*argv, i++, network->def->ipAddress);
APPEND_ARG(*argv, i++, "--except-interface");
APPEND_ARG(*argv, i++, "lo");
/*
* NB, dnsmasq command line arg bug means we need to
* use a single arg '--dhcp-leasefile=path' rather than
* two separate args in '--dhcp-leasefile path' style
*/
snprintf(buf, sizeof(buf), "--dhcp-leasefile=%s/lib/libvirt/dhcp-%s.leases",
LOCAL_STATE_DIR, network->def->name);
APPEND_ARG(*argv, i++, buf);
range = network->def->ranges;
while (range) {
snprintf(buf, sizeof(buf), "%s,%s",
range->start, range->end);
APPEND_ARG(*argv, i++, "--dhcp-range");
APPEND_ARG(*argv, i++, buf);
range = range->next;
}
#undef APPEND_ARG
return 0;
no_memory:
if (argv) {
for (i = 0; (*argv)[i]; i++)
free((*argv)[i]);
free(*argv);
}
qemudReportError(NULL, NULL, NULL, VIR_ERR_NO_MEMORY, "dnsmasq argv");
return -1;
}
static int
dhcpStartDhcpDaemon(struct qemud_network *network)
{
char **argv;
int ret, i;
if (network->def->ipAddress[0] == '\0') {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"cannot start dhcp daemon without IP address for server");
return -1;
}
argv = NULL;
if (qemudBuildDnsmasqArgv(network, &argv) < 0)
return -1;
ret = qemudExec(argv, &network->dnsmasqPid, NULL, NULL);
for (i = 0; argv[i]; i++)
free(argv[i]);
free(argv);
return ret;
}
static int
qemudAddIptablesRules(struct qemud_driver *driver,
struct qemud_network *network) {
int err;
if (!driver->iptables && !(driver->iptables = iptablesContextNew())) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_NO_MEMORY, "iptables support");
return 1;
}
/* allow DHCP requests through to dnsmasq */
if ((err = iptablesAddTcpInput(driver->iptables, network->bridge, 67))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to add iptables rule to allow DHCP requests from '%s' : %s\n",
network->bridge, strerror(err));
goto err1;
}
if ((err = iptablesAddUdpInput(driver->iptables, network->bridge, 67))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to add iptables rule to allow DHCP requests from '%s' : %s\n",
network->bridge, strerror(err));
goto err2;
}
/* allow DNS requests through to dnsmasq */
if ((err = iptablesAddTcpInput(driver->iptables, network->bridge, 53))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to add iptables rule to allow DNS requests from '%s' : %s\n",
network->bridge, strerror(err));
goto err3;
}
if ((err = iptablesAddUdpInput(driver->iptables, network->bridge, 53))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to add iptables rule to allow DNS requests from '%s' : %s\n",
network->bridge, strerror(err));
goto err4;
}
/* Catch all rules to block forwarding to/from bridges */
if ((err = iptablesAddForwardRejectOut(driver->iptables, network->bridge))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to add iptables rule to block outbound traffic from '%s' : %s\n",
network->bridge, strerror(err));
goto err5;
}
if ((err = iptablesAddForwardRejectIn(driver->iptables, network->bridge))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to add iptables rule to block inbound traffic to '%s' : %s\n",
network->bridge, strerror(err));
goto err6;
}
/* Allow traffic between guests on the same bridge */
if ((err = iptablesAddForwardAllowCross(driver->iptables, network->bridge))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to add iptables rule to allow cross bridge traffic on '%s' : %s\n",
network->bridge, strerror(err));
goto err7;
}
/* The remaining rules are only needed for IP forwarding */
if (!network->def->forward)
return 1;
/* allow forwarding packets from the bridge interface */
if ((err = iptablesAddForwardAllowOut(driver->iptables,
network->def->network,
network->bridge,
network->def->forwardDev))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to add iptables rule to allow forwarding from '%s' : %s\n",
network->bridge, strerror(err));
goto err8;
}
/* allow forwarding packets to the bridge interface if they are part of an existing connection */
if ((err = iptablesAddForwardAllowIn(driver->iptables,
network->def->network,
network->bridge,
network->def->forwardDev))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to add iptables rule to allow forwarding to '%s' : %s\n",
network->bridge, strerror(err));
goto err9;
}
/* enable masquerading */
if ((err = iptablesAddForwardMasquerade(driver->iptables,
network->def->network,
network->def->forwardDev))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to add iptables rule to enable masquerading : %s\n",
strerror(err));
goto err10;
}
return 1;
err10:
iptablesRemoveForwardAllowIn(driver->iptables,
network->def->network,
network->bridge,
network->def->forwardDev);
err9:
iptablesRemoveForwardAllowOut(driver->iptables,
network->def->network,
network->bridge,
network->def->forwardDev);
err8:
iptablesRemoveForwardAllowCross(driver->iptables,
network->bridge);
err7:
iptablesRemoveForwardRejectIn(driver->iptables,
network->bridge);
err6:
iptablesRemoveForwardRejectOut(driver->iptables,
network->bridge);
err5:
iptablesRemoveUdpInput(driver->iptables, network->bridge, 53);
err4:
iptablesRemoveTcpInput(driver->iptables, network->bridge, 53);
err3:
iptablesRemoveUdpInput(driver->iptables, network->bridge, 67);
err2:
iptablesRemoveTcpInput(driver->iptables, network->bridge, 67);
err1:
return 0;
}
static void
qemudRemoveIptablesRules(struct qemud_driver *driver,
struct qemud_network *network) {
if (network->def->forward) {
iptablesRemoveForwardMasquerade(driver->iptables,
network->def->network,
network->def->forwardDev);
iptablesRemoveForwardAllowIn(driver->iptables,
network->def->network,
network->bridge,
network->def->forwardDev);
iptablesRemoveForwardAllowOut(driver->iptables,
network->def->network,
network->bridge,
network->def->forwardDev);
}
iptablesRemoveForwardAllowCross(driver->iptables, network->bridge);
iptablesRemoveForwardRejectIn(driver->iptables, network->bridge);
iptablesRemoveForwardRejectOut(driver->iptables, network->bridge);
iptablesRemoveUdpInput(driver->iptables, network->bridge, 53);
iptablesRemoveTcpInput(driver->iptables, network->bridge, 53);
iptablesRemoveUdpInput(driver->iptables, network->bridge, 67);
iptablesRemoveTcpInput(driver->iptables, network->bridge, 67);
}
static int
qemudEnableIpForwarding(void)
{
#define PROC_IP_FORWARD "/proc/sys/net/ipv4/ip_forward"
int fd, ret;
if ((fd = open(PROC_IP_FORWARD, O_WRONLY|O_TRUNC)) == -1)
return 0;
if (write(fd, "1\n", 2) < 0)
ret = 0;
close (fd);
return 1;
#undef PROC_IP_FORWARD
}
int qemudStartNetworkDaemon(struct qemud_driver *driver,
struct qemud_network *network) {
const char *name;
int err;
if (qemudIsActiveNetwork(network)) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"network is already active");
return -1;
}
if (!driver->brctl && (err = brInit(&driver->brctl))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"cannot initialize bridge support: %s", strerror(err));
return -1;
}
if (network->def->bridge[0] == '\0' ||
strchr(network->def->bridge, '%')) {
name = "vnet%d";
} else {
name = network->def->bridge;
}
if ((err = brAddBridge(driver->brctl, name, network->bridge, sizeof(network->bridge)))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"cannot create bridge '%s' : %s", name, strerror(err));
return -1;
}
if (network->def->forwardDelay &&
(err = brSetForwardDelay(driver->brctl, network->bridge, network->def->forwardDelay))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to set bridge forward delay to %d\n",
network->def->forwardDelay);
goto err_delbr;
}
if ((err = brSetForwardDelay(driver->brctl, network->bridge, network->def->disableSTP ? 0 : 1))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to set bridge STP to %s\n",
network->def->disableSTP ? "off" : "on");
goto err_delbr;
}
if (network->def->ipAddress[0] &&
(err = brSetInetAddress(driver->brctl, network->bridge, network->def->ipAddress))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"cannot set IP address on bridge '%s' to '%s' : %s\n",
network->bridge, network->def->ipAddress, strerror(err));
goto err_delbr;
}
if (network->def->netmask[0] &&
(err = brSetInetNetmask(driver->brctl, network->bridge, network->def->netmask))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"cannot set netmask on bridge '%s' to '%s' : %s\n",
network->bridge, network->def->netmask, strerror(err));
goto err_delbr;
}
if (network->def->ipAddress[0] &&
(err = brSetInterfaceUp(driver->brctl, network->bridge, 1))) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to bring the bridge '%s' up : %s\n",
network->bridge, strerror(err));
goto err_delbr;
}
if (!qemudAddIptablesRules(driver, network))
goto err_delbr1;
if (network->def->forward &&
!qemudEnableIpForwarding()) {
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"failed to enable IP forwarding : %s\n", strerror(err));
goto err_delbr2;
}
if (network->def->ranges &&
dhcpStartDhcpDaemon(network) < 0)
goto err_delbr2;
network->active = 1;
driver->ninactivenetworks--;
driver->nactivenetworks++;
return 0;
err_delbr2:
qemudRemoveIptablesRules(driver, network);
err_delbr1:
if (network->def->ipAddress[0] &&
(err = brSetInterfaceUp(driver->brctl, network->bridge, 0))) {
qemudLog(QEMUD_WARN, "Failed to bring down bridge '%s' : %s",
network->bridge, strerror(err));
}
err_delbr:
if ((err = brDeleteBridge(driver->brctl, network->bridge))) {
qemudLog(QEMUD_WARN, "Failed to delete bridge '%s' : %s\n",
network->bridge, strerror(err));
}
return -1;
}
int qemudShutdownNetworkDaemon(struct qemud_driver *driver,
struct qemud_network *network) {
int err;
qemudLog(QEMUD_INFO, "Shutting down network '%s'", network->def->name);
if (!qemudIsActiveNetwork(network))
return 0;
if (network->dnsmasqPid > 0)
kill(network->dnsmasqPid, SIGTERM);
qemudRemoveIptablesRules(driver, network);
if (network->def->ipAddress[0] &&
(err = brSetInterfaceUp(driver->brctl, network->bridge, 0))) {
qemudLog(QEMUD_WARN, "Failed to bring down bridge '%s' : %s\n",
network->bridge, strerror(err));
}
if ((err = brDeleteBridge(driver->brctl, network->bridge))) {
qemudLog(QEMUD_WARN, "Failed to delete bridge '%s' : %s\n",
network->bridge, strerror(err));
}
if (network->dnsmasqPid > 0 &&
waitpid(network->dnsmasqPid, NULL, WNOHANG) != network->dnsmasqPid) {
kill(network->dnsmasqPid, SIGKILL);
if (waitpid(network->dnsmasqPid, NULL, 0) != network->dnsmasqPid)
qemudLog(QEMUD_WARN, "Got unexpected pid for dnsmasq\n");
}
network->bridge[0] = '\0';
network->dnsmasqPid = -1;
network->active = 0;
if (network->newDef) {
qemudFreeNetworkDef(network->def);
network->def = network->newDef;
network->newDef = NULL;
}
driver->nactivenetworks--;
driver->ninactivenetworks++;
if (!network->configFile[0])
qemudRemoveInactiveNetwork(driver, network);
return 0;
}
static void qemudDispatchVMEvent(int fd, int events, void *opaque) {
struct qemud_driver *driver = (struct qemud_driver *)opaque;
struct qemud_vm *vm = driver->vms;
while (vm) {
if (qemudIsActiveVM(vm) &&
(vm->stdout == fd ||
vm->stderr == fd))
break;
vm = vm->next;
}
if (!vm)
return;
if (events == POLLIN)
qemudDispatchVMLog(driver, vm, fd);
else
qemudDispatchVMFailure(driver, vm, fd);
}
static int qemudMonitorCommand(struct qemud_driver *driver ATTRIBUTE_UNUSED,
struct qemud_vm *vm,
const char *cmd,
char **reply) {
int size = 0;
char *buf = NULL;
if (write(vm->monitor, cmd, strlen(cmd)) < 0) {
return -1;
}
*reply = NULL;
for (;;) {
struct pollfd fd = { vm->monitor, POLLIN | POLLERR | POLLHUP, 0 };
char *tmp;
/* Read all the data QEMU has sent thus far */
for (;;) {
char data[1024];
int got = read(vm->monitor, data, sizeof(data));
char *b;
if (got == 0) {
if (buf)
free(buf);
return -1;
}
if (got < 0) {
if (errno == EINTR)
continue;
if (errno == EAGAIN)
break;
if (buf)
free(buf);
return -1;
}
if (!(b = realloc(buf, size+got+1))) {
free(buf);
return -1;
}
buf = b;
memmove(buf+size, data, got);
buf[size+got] = '\0';
size += got;
}
if (buf)
qemudDebug("Mon [%s]", buf);
/* Look for QEMU prompt to indicate completion */
if (buf && ((tmp = strstr(buf, "\n(qemu) ")) != NULL)) {
tmp[0] = '\0';
break;
}
pollagain:
/* Need to wait for more data */
if (poll(&fd, 1, -1) < 0) {
if (errno == EINTR)
goto pollagain;
free(buf);
return -1;
}
}
*reply = buf;
return 0;
}
static int qemudGetMemInfo(unsigned long *memory) {
FILE *meminfo = fopen("/proc/meminfo", "r");
char line[1024];
*memory = 0;
if (!meminfo) {
return -1;
}
/* XXX NUMA and hyperthreads ? */
while (fgets(line, sizeof(line), meminfo) != NULL) {
if (!strncmp(line, "MemTotal:", 9)) {
*memory = (unsigned int)strtol(line + 10, NULL, 10);
}
}
fclose(meminfo);
return 0;
}
static int qemudGetCPUInfo(unsigned int *cpus, unsigned int *mhz,
unsigned int *nodes, unsigned int *sockets,
unsigned int *cores, unsigned int *threads) {
FILE *cpuinfo = fopen("/proc/cpuinfo", "r");
char line[1024];
*cpus = 0;
*mhz = 0;
*nodes = *sockets = *cores = *threads = 1;
if (!cpuinfo) {
return -1;
}
/* XXX NUMA and hyperthreads ? */
while (fgets(line, sizeof(line), cpuinfo) != NULL) {
if (!strncmp(line, "processor\t", 10)) { /* aka a single logical CPU */
(*cpus)++;
} else if (!strncmp(line, "cpu MHz\t", 8)) {
char *offset = strchr(line, ':');
if (!offset)
continue;
offset++;
if (!*offset)
continue;
*mhz = (unsigned int)strtol(offset, NULL, 10);
} else if (!strncmp(line, "physical id\t", 12)) { /* aka socket */
unsigned int id;
char *offset = strchr(line, ':');
if (!offset)
continue;
offset++;
if (!*offset)
continue;
id = (unsigned int)strtol(offset, NULL, 10);
if ((id+1) > *sockets)
*sockets = (id + 1);
} else if (!strncmp(line, "cpu cores\t", 9)) { /* aka cores */
unsigned int id;
char *offset = strchr(line, ':');
if (!offset)
continue;
offset++;
if (!*offset)
continue;
id = (unsigned int)strtol(offset, NULL, 10);
if (id > *cores)
*cores = id;
}
}
fclose(cpuinfo);
return 0;
}
virDrvOpenStatus qemudOpen(virConnectPtr conn,
const char *name,
int flags ATTRIBUTE_UNUSED) {
uid_t uid = getuid();
if (qemu_driver == NULL)
return VIR_DRV_OPEN_DECLINED;
if (uid) {
if (strcmp(name, "qemu:///session"))
return VIR_DRV_OPEN_DECLINED;
} else {
if (strcmp(name, "qemu:///system"))
return VIR_DRV_OPEN_DECLINED;
}
conn->privateData = qemu_driver;
return VIR_DRV_OPEN_SUCCESS;
}
static int qemudClose(virConnectPtr conn) {
/*struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;*/
conn->privateData = NULL;
return 0;
}
static const char *qemudGetType(virConnectPtr conn ATTRIBUTE_UNUSED) {
return "qemu";
}
static int qemudGetMaxVCPUs(virConnectPtr conn ATTRIBUTE_UNUSED,
const char *type) {
if (!type)
return 16;
if (!strcmp(type, "qemu"))
return 16;
/* XXX future KVM will support SMP. Need to probe
kernel to figure out KVM module version i guess */
if (!strcmp(type, "kvm"))
return 1;
if (!strcmp(type, "kqemu"))
return 1;
return -1;
}
int qemudGetNodeInfo(virConnectPtr conn ATTRIBUTE_UNUSED,
virNodeInfoPtr node) {
struct utsname info;
if (uname(&info) < 0)
return -1;
strncpy(node->model, info.machine, sizeof(node->model)-1);
node->model[sizeof(node->model)-1] = '\0';
if (qemudGetMemInfo(&(node->memory)) < 0)
return -1;
if (qemudGetCPUInfo(&(node->cpus), &(node->mhz), &(node->nodes),
&(node->sockets), &(node->cores), &(node->threads)) < 0)
return -1;
return 0;
}
char *qemudGetCapabilities(virConnectPtr conn ATTRIBUTE_UNUSED) {
struct utsname utsname;
int i, j, r;
int have_kqemu = 0;
int have_kvm = 0;
virBufferPtr xml;
/* Really, this never fails - look at the man-page. */
uname (&utsname);
have_kqemu = access ("/dev/kqemu", F_OK) == 0;
have_kvm = access ("/dev/kvm", F_OK) == 0;
/* Construct the XML. */
xml = virBufferNew (1024);
if (!xml) {
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, NULL);
return NULL;
}
r = virBufferVSprintf (xml,
"\
<capabilities>\n\
<host>\n\
<cpu>\n\
<arch>%s</arch>\n\
</cpu>\n\
</host>\n",
utsname.machine);
if (r == -1) {
vir_buffer_failed:
virBufferFree (xml);
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, NULL);
return NULL;
}
i = -1;
if (strcmp (utsname.machine, "i686") == 0) i = 0;
else if (strcmp (utsname.machine, "x86_64") == 0) i = 1;
if (i >= 0) {
/* For the default (PC-like) guest, qemudArchs[0] or [1]. */
r = virBufferVSprintf (xml,
"\
\n\
<guest>\n\
<os_type>hvm</os_type>\n\
<arch name=\"%s\">\n\
<wordsize>%d</wordsize>\n\
<emulator>/usr/bin/%s</emulator>\n\
<domain type=\"qemu\"/>\n",
qemudArchs[i].arch,
qemudArchs[i].wordsize,
qemudArchs[i].binary);
if (r == -1) goto vir_buffer_failed;
for (j = 0; qemudArchs[i].machines[j]; ++j) {
r = virBufferVSprintf (xml,
"\
<machine>%s</machine>\n",
qemudArchs[i].machines[j]);
if (r == -1) goto vir_buffer_failed;
}
if (have_kqemu) {
r = virBufferAdd (xml,
"\
<domain type=\"kqemu\"/>\n", -1);
if (r == -1) goto vir_buffer_failed;
}
if (have_kvm) {
r = virBufferAdd (xml,
"\
<domain type=\"kvm\">\n\
<emulator>/usr/bin/qemu-kvm</emulator>\n\
</domain>\n", -1);
if (r == -1) goto vir_buffer_failed;
}
r = virBufferAdd (xml,
"\
</arch>\n\
</guest>\n", -1);
if (r == -1) goto vir_buffer_failed;
/* The "other" PC architecture needs emulation. */
i = i ^ 1;
r = virBufferVSprintf (xml,
"\
\n\
<guest>\n\
<os_type>hvm</os_type>\n\
<arch name=\"%s\">\n\
<wordsize>%d</wordsize>\n\
<emulator>/usr/bin/%s</emulator>\n\
<domain type=\"qemu\"/>\n",
qemudArchs[i].arch,
qemudArchs[i].wordsize,
qemudArchs[i].binary);
if (r == -1) goto vir_buffer_failed;
for (j = 0; qemudArchs[i].machines[j]; ++j) {
r = virBufferVSprintf (xml,
"\
<machine>%s</machine>\n",
qemudArchs[i].machines[j]);
if (r == -1) goto vir_buffer_failed;
}
r = virBufferAdd (xml,
"\
</arch>\n\
</guest>\n", -1);
if (r == -1) goto vir_buffer_failed;
}
/* The non-PC architectures, qemudArchs[>=2]. */
for (i = 2; qemudArchs[i].arch; ++i) {
r = virBufferVSprintf (xml,
"\
\n\
<guest>\n\
<os_type>hvm</os_type>\n\
<arch name=\"%s\">\n\
<wordsize>%d</wordsize>\n\
<emulator>/usr/bin/%s</emulator>\n\
<domain type=\"qemu\"/>\n",
qemudArchs[i].arch,
qemudArchs[i].wordsize,
qemudArchs[i].binary);
if (r == -1) goto vir_buffer_failed;
for (j = 0; qemudArchs[i].machines[j]; ++j) {
r = virBufferVSprintf (xml,
"\
<machine>%s</machine>\n",
qemudArchs[i].machines[j]);
if (r == -1) goto vir_buffer_failed;
}
r = virBufferAdd (xml,
"\
</arch>\n\
</guest>\n", -1);
if (r == -1) goto vir_buffer_failed;
}
/* Finish off. */
r = virBufferAdd (xml,
"\
</capabilities>\n", -1);
if (r == -1) goto vir_buffer_failed;
return virBufferContentAndFree(xml);
}
static int qemudGetProcessInfo(unsigned long long *cpuTime, int pid) {
char proc[PATH_MAX];
FILE *pidinfo;
unsigned long long usertime, systime;
if (snprintf(proc, sizeof(proc), "/proc/%d/stat", pid) >= (int)sizeof(proc)) {
return -1;
}
if (!(pidinfo = fopen(proc, "r"))) {
/*printf("cannnot read pid info");*/
/* VM probably shut down, so fake 0 */
*cpuTime = 0;
return 0;
}
if (fscanf(pidinfo, "%*d %*s %*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %llu %llu", &usertime, &systime) != 2) {
qemudDebug("not enough arg");
return -1;
}
/* We got jiffies
* We want nanoseconds
* _SC_CLK_TCK is jiffies per second
* So calulate thus....
*/
*cpuTime = 1000ull * 1000ull * 1000ull * (usertime + systime) / (unsigned long long)sysconf(_SC_CLK_TCK);
qemudDebug("Got %llu %llu %llu", usertime, systime, *cpuTime);
fclose(pidinfo);
return 0;
}
virDomainPtr qemudDomainLookupByID(virConnectPtr conn ATTRIBUTE_UNUSED,
int id) {
struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;
struct qemud_vm *vm = qemudFindVMByID(driver, id);
virDomainPtr dom;
if (!vm) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "no domain with matching id");
return NULL;
}
dom = calloc(1, sizeof(struct _virDomain));
if (!dom) {
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "virDomainPtr");
return NULL;
}
dom->conn = conn;
dom->id = vm->id;
dom->name = vm->def->name;
memcpy(dom->uuid, vm->def->uuid, sizeof(dom->uuid));
return dom;
}
virDomainPtr qemudDomainLookupByUUID(virConnectPtr conn ATTRIBUTE_UNUSED,
const unsigned char *uuid) {
struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;
struct qemud_vm *vm = qemudFindVMByUUID(driver, uuid);
virDomainPtr dom;
if (!vm) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "no domain with matching uuid");
return NULL;
}
dom = calloc(1, sizeof(struct _virDomain));
if (!dom) {
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "virDomainPtr");
return NULL;
}
dom->conn = conn;
dom->id = vm->id;
dom->name = vm->def->name;
memcpy(dom->uuid, vm->def->uuid, sizeof(dom->uuid));
return dom;
}
virDomainPtr qemudDomainLookupByName(virConnectPtr conn ATTRIBUTE_UNUSED,
const char *name) {
struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;
struct qemud_vm *vm = qemudFindVMByName(driver, name);
virDomainPtr dom;
if (!vm) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "no domain with matching name");
return NULL;
}
dom = calloc(1, sizeof(struct _virDomain));
if (!dom) {
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "virDomainPtr");
return NULL;
}
dom->conn = conn;
dom->id = vm->id;
dom->name = vm->def->name;
memcpy(dom->uuid, vm->def->uuid, sizeof(dom->uuid));
return dom;
}
int qemudGetVersion(virConnectPtr conn, unsigned long *version) {
struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;
if (qemudExtractVersion(driver) < 0)
return -1;
*version = qemu_driver->qemuVersion;
return 0;
}
int qemudListDomains(virConnectPtr conn, int *ids, int nids) {
struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;
struct qemud_vm *vm = driver->vms;
int got = 0;
while (vm && got < nids) {
if (qemudIsActiveVM(vm)) {
ids[got] = vm->id;
got++;
}
vm = vm->next;
}
return got;
}
int qemudNumDomains(virConnectPtr conn) {
struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;
return driver->nactivevms;
}
virDomainPtr qemudDomainCreate(virConnectPtr conn, const char *xml,
unsigned int flags ATTRIBUTE_UNUSED) {
struct qemud_vm_def *def;
struct qemud_vm *vm;
virDomainPtr dom;
struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;
if (!(def = qemudParseVMDef(driver, xml, NULL)))
return NULL;
if (!(vm = qemudAssignVMDef(driver, def))) {
qemudFreeVMDef(def);
return NULL;
}
if (qemudStartVMDaemon(driver, vm) < 0) {
qemudRemoveInactiveVM(driver, vm);
return NULL;
}
dom = calloc(1, sizeof(struct _virDomain));
if (!dom) {
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "virDomainPtr");
return NULL;
}
dom->conn = conn;
dom->id = vm->id;
dom->name = vm->def->name;
memcpy(dom->uuid, vm->def->uuid, sizeof(dom->uuid));
return dom;
}
int qemudDomainSuspend(virDomainPtr dom) {
struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData;
char *info;
struct qemud_vm *vm = qemudFindVMByID(driver, dom->id);
if (!vm) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching id %d", dom->id);
return -1;
}
if (!qemudIsActiveVM(vm)) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "domain is not running");
return -1;
}
if (vm->state == VIR_DOMAIN_PAUSED)
return 0;
if (qemudMonitorCommand(driver, vm, "stop\n", &info) < 0) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "suspend operation failed");
return -1;
}
vm->state = VIR_DOMAIN_PAUSED;
qemudDebug("Reply %s", info);
free(info);
return 0;
}
int qemudDomainResume(virDomainPtr dom) {
struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData;
char *info;
struct qemud_vm *vm = qemudFindVMByID(driver, dom->id);
if (!vm) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching id %d", dom->id);
return -1;
}
if (!qemudIsActiveVM(vm)) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "domain is not running");
return -1;
}
if (vm->state == VIR_DOMAIN_RUNNING)
return 0;
if (qemudMonitorCommand(driver, vm, "cont\n", &info) < 0) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "resume operation failed");
return -1;
}
vm->state = VIR_DOMAIN_RUNNING;
qemudDebug("Reply %s", info);
free(info);
return 0;
}
int qemudDomainDestroy(virDomainPtr dom) {
struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData;
struct qemud_vm *vm = qemudFindVMByID(driver, dom->id);
int ret;
if (!vm) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN,
"no domain with matching id %d", dom->id);
return -1;
}
ret = qemudShutdownVMDaemon(driver, vm);
free(dom);
return ret;
}
static char *qemudDomainGetOSType(virDomainPtr dom) {
struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData;
struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid);
char *type;
if (!vm) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN,
"no domain with matching uuid");
return NULL;
}
if (!(type = strdup(vm->def->os.type))) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_MEMORY, "ostype");
return NULL;
}
return type;
}
int qemudDomainGetInfo(virDomainPtr dom,
virDomainInfoPtr info) {
struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData;
struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid);
if (!vm) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid");
return -1;
}
info->state = vm->state;
if (!qemudIsActiveVM(vm)) {
info->cpuTime = 0;
} else {
if (qemudGetProcessInfo(&(info->cpuTime), vm->pid) < 0) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "cannot read cputime for domain");
return -1;
}
}
info->maxMem = vm->def->maxmem;
info->memory = vm->def->memory;
info->nrVirtCpu = vm->def->vcpus;
return 0;
}
int qemudDomainSave(virDomainPtr dom,
const char *path ATTRIBUTE_UNUSED) {
struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData;
struct qemud_vm *vm = qemudFindVMByID(driver, dom->id);
if (!vm) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching id %d", dom->id);
return -1;
}
if (!qemudIsActiveVM(vm)) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "domain is not running");
return -1;
}
qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "save is not supported");
return -1;
}
int qemudDomainRestore(virConnectPtr conn,
const char *path ATTRIBUTE_UNUSED) {
/*struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;*/
qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED, "restore is not supported");
return -1;
}
char *qemudDomainDumpXML(virDomainPtr dom,
int flags ATTRIBUTE_UNUSED) {
struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData;
struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid);
if (!vm) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid");
return NULL;
}
return qemudGenerateXML(driver, vm, vm->def, 1);
}
int qemudListDefinedDomains(virConnectPtr conn,
char **const names, int nnames) {
struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;
struct qemud_vm *vm = driver->vms;
int got = 0, i;
while (vm && got < nnames) {
if (!qemudIsActiveVM(vm)) {
if (!(names[got] = strdup(vm->def->name))) {
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "names");
goto cleanup;
}
got++;
}
vm = vm->next;
}
return got;
cleanup:
for (i = 0 ; i < got ; i++)
free(names[i]);
return -1;
}
int qemudNumDefinedDomains(virConnectPtr conn) {
struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;
return driver->ninactivevms;
}
int qemudDomainStart(virDomainPtr dom) {
struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData;
struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid);
if (!vm) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN,
"no domain with matching uuid");
return -1;
}
return qemudStartVMDaemon(driver, vm);
}
virDomainPtr qemudDomainDefine(virConnectPtr conn, const char *xml) {
struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;
struct qemud_vm_def *def;
struct qemud_vm *vm;
virDomainPtr dom;
if (!(def = qemudParseVMDef(driver, xml, NULL)))
return NULL;
if (!(vm = qemudAssignVMDef(driver, def))) {
qemudFreeVMDef(def);
return NULL;
}
if (qemudSaveVMDef(driver, vm, def) < 0) {
qemudRemoveInactiveVM(driver, vm);
return NULL;
}
dom = calloc(1, sizeof(struct _virDomain));
if (!dom) {
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "virDomainPtr");
return NULL;
}
dom->conn = conn;
dom->id = vm->id;
dom->name = vm->def->name;
memcpy(dom->uuid, vm->def->uuid, sizeof(dom->uuid));
return dom;
}
int qemudDomainUndefine(virDomainPtr dom) {
struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData;
struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid);
if (!vm) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid");
return -1;
}
if (qemudIsActiveVM(vm)) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INTERNAL_ERROR, "cannot delete active domain");
return -1;
}
if (qemudDeleteConfig(driver, vm->configFile, vm->def->name) < 0)
return -1;
if (unlink(vm->autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR)
qemudLog(QEMUD_WARN, "Failed to delete autostart link '%s': %s",
vm->autostartLink, strerror(errno));
vm->configFile[0] = '\0';
vm->autostartLink[0] = '\0';
qemudRemoveInactiveVM(driver, vm);
return 0;
}
int qemudDomainGetAutostart(virDomainPtr dom,
int *autostart) {
struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData;
struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid);
if (!vm) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid");
return -1;
}
*autostart = vm->autostart;
return 0;
}
int qemudDomainSetAutostart(virDomainPtr dom,
int autostart) {
struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData;
struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid);
if (!vm) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid");
return -1;
}
autostart = (autostart != 0);
if (vm->autostart == autostart)
return 0;
if (autostart) {
int err;
if ((err = qemudEnsureDir(driver->autostartDir))) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INTERNAL_ERROR,
"cannot create autostart directory %s: %s",
driver->autostartDir, strerror(err));
return -1;
}
if (symlink(vm->configFile, vm->autostartLink) < 0) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INTERNAL_ERROR,
"Failed to create symlink '%s' to '%s': %s",
vm->autostartLink, vm->configFile, strerror(errno));
return -1;
}
} else {
if (unlink(vm->autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INTERNAL_ERROR,
"Failed to delete symlink '%s': %s",
vm->autostartLink, strerror(errno));
return -1;
}
}
vm->autostart = autostart;
return 0;
}
virNetworkPtr qemudNetworkLookupByUUID(virConnectPtr conn ATTRIBUTE_UNUSED,
const unsigned char *uuid) {
struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;
struct qemud_network *network = qemudFindNetworkByUUID(driver, uuid);
virNetworkPtr net;
if (!network) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "no network with matching uuid");
return NULL;
}
net = calloc(1, sizeof(struct _virNetwork));
if (!net) {
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "virNetworkPtr");
return NULL;
}
net->conn = conn;
net->name = network->def->name;
memcpy(net->uuid, network->def->uuid, sizeof(net->uuid));
return net;
}
virNetworkPtr qemudNetworkLookupByName(virConnectPtr conn ATTRIBUTE_UNUSED,
const char *name) {
struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;
struct qemud_network *network = qemudFindNetworkByName(driver, name);
virNetworkPtr net;
if (!network) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "no network with matching name");
return NULL;
}
net = calloc(1, sizeof(struct _virNetwork));
if (!net) {
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "virNetworkPtr");
return NULL;
}
net->conn = conn;
net->name = network->def->name;
memcpy(net->uuid, network->def->uuid, sizeof(net->uuid));
return net;
}
static virDrvOpenStatus qemudOpenNetwork(virConnectPtr conn,
const char *name ATTRIBUTE_UNUSED,
int flags ATTRIBUTE_UNUSED) {
if (!qemu_driver)
return VIR_DRV_OPEN_DECLINED;
conn->networkPrivateData = qemu_driver;
return VIR_DRV_OPEN_SUCCESS;
}
static int qemudCloseNetwork(virConnectPtr conn) {
conn->networkPrivateData = NULL;
return 0;
}
int qemudNumNetworks(virConnectPtr conn) {
struct qemud_driver *driver = (struct qemud_driver *)conn->networkPrivateData;
return driver->nactivenetworks;
}
int qemudListNetworks(virConnectPtr conn, char **const names, int nnames) {
struct qemud_driver *driver = (struct qemud_driver *)conn->networkPrivateData;
struct qemud_network *network = driver->networks;
int got = 0, i;
while (network && got < nnames) {
if (qemudIsActiveNetwork(network)) {
if (!(names[got] = strdup(network->def->name))) {
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "names");
goto cleanup;
}
got++;
}
network = network->next;
}
return got;
cleanup:
for (i = 0 ; i < got ; i++)
free(names[i]);
return -1;
}
int qemudNumDefinedNetworks(virConnectPtr conn) {
struct qemud_driver *driver = (struct qemud_driver *)conn->networkPrivateData;
return driver->ninactivenetworks;
}
int qemudListDefinedNetworks(virConnectPtr conn, char **const names, int nnames) {
struct qemud_driver *driver = (struct qemud_driver *)conn->networkPrivateData;
struct qemud_network *network = driver->networks;
int got = 0, i;
while (network && got < nnames) {
if (!qemudIsActiveNetwork(network)) {
if (!(names[got] = strdup(network->def->name))) {
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "names");
goto cleanup;
}
got++;
}
network = network->next;
}
return got;
cleanup:
for (i = 0 ; i < got ; i++)
free(names[i]);
return -1;
}
virNetworkPtr qemudNetworkCreate(virConnectPtr conn, const char *xml) {
struct qemud_driver *driver = (struct qemud_driver *)conn->networkPrivateData;
struct qemud_network_def *def;
struct qemud_network *network;
virNetworkPtr net;
if (!(def = qemudParseNetworkDef(driver, xml, NULL)))
return NULL;
if (!(network = qemudAssignNetworkDef(driver, def))) {
qemudFreeNetworkDef(def);
return NULL;
}
if (qemudStartNetworkDaemon(driver, network) < 0) {
qemudRemoveInactiveNetwork(driver, network);
return NULL;
}
net = calloc(1, sizeof(struct _virNetwork));
if (!net) {
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "virNetworkPtr");
return NULL;
}
net->conn = conn;
net->name = network->def->name;
memcpy(net->uuid, network->def->uuid, sizeof(net->uuid));
return net;
}
virNetworkPtr qemudNetworkDefine(virConnectPtr conn, const char *xml) {
struct qemud_driver *driver = (struct qemud_driver *)conn->networkPrivateData;
struct qemud_network_def *def;
struct qemud_network *network;
virNetworkPtr net;
if (!(def = qemudParseNetworkDef(driver, xml, NULL)))
return NULL;
if (!(network = qemudAssignNetworkDef(driver, def))) {
qemudFreeNetworkDef(def);
return NULL;
}
if (qemudSaveNetworkDef(driver, network, def) < 0) {
qemudRemoveInactiveNetwork(driver, network);
return NULL;
}
net = calloc(1, sizeof(struct _virNetwork));
if (!net) {
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "virNetworkPtr");
return NULL;
}
net->conn = conn;
net->name = network->def->name;
memcpy(net->uuid, network->def->uuid, sizeof(net->uuid));
return net;
}
int qemudNetworkUndefine(virNetworkPtr net) {
struct qemud_driver *driver = (struct qemud_driver *)net->conn->networkPrivateData;
struct qemud_network *network = qemudFindNetworkByUUID(driver, net->uuid);
if (!network) {
qemudReportError(net->conn, NULL, net, VIR_ERR_INVALID_DOMAIN, "no network with matching uuid");
return -1;
}
if (qemudDeleteConfig(driver, network->configFile, network->def->name) < 0)
return -1;
if (unlink(network->autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR)
qemudLog(QEMUD_WARN, "Failed to delete autostart link '%s': %s",
network->autostartLink, strerror(errno));
network->configFile[0] = '\0';
network->autostartLink[0] = '\0';
qemudRemoveInactiveNetwork(driver, network);
return 0;
}
int qemudNetworkStart(virNetworkPtr net) {
struct qemud_driver *driver = (struct qemud_driver *)net->conn->networkPrivateData;
struct qemud_network *network = qemudFindNetworkByUUID(driver, net->uuid);
if (!network) {
qemudReportError(net->conn, NULL, net, VIR_ERR_INVALID_NETWORK,
"no network with matching uuid");
return -1;
}
return qemudStartNetworkDaemon(driver, network);
}
int qemudNetworkDestroy(virNetworkPtr net) {
struct qemud_driver *driver = (struct qemud_driver *)net->conn->networkPrivateData;
struct qemud_network *network = qemudFindNetworkByUUID(driver, net->uuid);
if (!network) {
qemudReportError(net->conn, NULL, net, VIR_ERR_INVALID_NETWORK,
"no network with matching uuid");
return -1;
}
return qemudShutdownNetworkDaemon(driver, network);
}
char *qemudNetworkDumpXML(virNetworkPtr net, int flags ATTRIBUTE_UNUSED) {
struct qemud_driver *driver = (struct qemud_driver *)net->conn->networkPrivateData;
struct qemud_network *network = qemudFindNetworkByUUID(driver, net->uuid);
if (!network) {
qemudReportError(net->conn, NULL, net, VIR_ERR_INVALID_NETWORK,
"no network with matching uuid");
return NULL;
}
return qemudGenerateNetworkXML(driver, network, network->def);
}
char *qemudNetworkGetBridgeName(virNetworkPtr net) {
struct qemud_driver *driver = (struct qemud_driver *)net->conn->networkPrivateData;
struct qemud_network *network = qemudFindNetworkByUUID(driver, net->uuid);
char *bridge;
if (!network) {
qemudReportError(net->conn, NULL, net, VIR_ERR_INVALID_NETWORK, "no network with matching id");
return NULL;
}
bridge = strdup(network->bridge);
if (!bridge) {
qemudReportError(net->conn, NULL, net, VIR_ERR_NO_MEMORY, "bridge");
return NULL;
}
return bridge;
}
int qemudNetworkGetAutostart(virNetworkPtr net,
int *autostart) {
struct qemud_driver *driver = (struct qemud_driver *)net->conn->networkPrivateData;
struct qemud_network *network = qemudFindNetworkByUUID(driver, net->uuid);
if (!network) {
qemudReportError(net->conn, NULL, net, VIR_ERR_INVALID_NETWORK, "no network with matching uuid");
return -1;
}
*autostart = network->autostart;
return 0;
}
int qemudNetworkSetAutostart(virNetworkPtr net,
int autostart) {
struct qemud_driver *driver = (struct qemud_driver *)net->conn->networkPrivateData;
struct qemud_network *network = qemudFindNetworkByUUID(driver, net->uuid);
if (!network) {
qemudReportError(net->conn, NULL, net, VIR_ERR_INVALID_NETWORK, "no network with matching uuid");
return -1;
}
autostart = (autostart != 0);
if (network->autostart == autostart)
return 0;
if (autostart) {
int err;
if ((err = qemudEnsureDir(driver->networkAutostartDir))) {
qemudReportError(net->conn, NULL, net, VIR_ERR_INTERNAL_ERROR,
"cannot create autostart directory %s: %s",
driver->networkAutostartDir, strerror(err));
return -1;
}
if (symlink(network->configFile, network->autostartLink) < 0) {
qemudReportError(net->conn, NULL, net, VIR_ERR_INTERNAL_ERROR,
"Failed to create symlink '%s' to '%s': %s",
network->autostartLink, network->configFile, strerror(errno));
return -1;
}
} else {
if (unlink(network->autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR) {
qemudReportError(net->conn, NULL, net, VIR_ERR_INTERNAL_ERROR,
"Failed to delete symlink '%s': %s",
network->autostartLink, strerror(errno));
return -1;
}
}
network->autostart = autostart;
return 0;
}
static virDriver qemuDriver = {
VIR_DRV_QEMU,
"QEMU",
LIBVIR_VERSION_NUMBER,
qemudOpen, /* open */
qemudClose, /* close */
qemudGetType, /* type */
qemudGetVersion, /* version */
NULL, /* hostname */
NULL, /* uri */
qemudGetMaxVCPUs, /* getMaxVcpus */
qemudGetNodeInfo, /* nodeGetInfo */
qemudGetCapabilities, /* getCapabilities */
qemudListDomains, /* listDomains */
qemudNumDomains, /* numOfDomains */
qemudDomainCreate, /* domainCreateLinux */
qemudDomainLookupByID, /* domainLookupByID */
qemudDomainLookupByUUID, /* domainLookupByUUID */
qemudDomainLookupByName, /* domainLookupByName */
qemudDomainSuspend, /* domainSuspend */
qemudDomainResume, /* domainResume */
qemudDomainDestroy, /* domainShutdown */
NULL, /* domainReboot */
qemudDomainDestroy, /* domainDestroy */
qemudDomainGetOSType, /* domainGetOSType */
NULL, /* domainGetMaxMemory */
NULL, /* domainSetMaxMemory */
NULL, /* domainSetMemory */
qemudDomainGetInfo, /* domainGetInfo */
qemudDomainSave, /* domainSave */
qemudDomainRestore, /* domainRestore */
NULL, /* domainCoreDump */
NULL, /* domainSetVcpus */
NULL, /* domainPinVcpu */
NULL, /* domainGetVcpus */
NULL, /* domainGetMaxVcpus */
qemudDomainDumpXML, /* domainDumpXML */
qemudListDefinedDomains, /* listDomains */
qemudNumDefinedDomains, /* numOfDomains */
qemudDomainStart, /* domainCreate */
qemudDomainDefine, /* domainDefineXML */
qemudDomainUndefine, /* domainUndefine */
NULL, /* domainAttachDevice */
NULL, /* domainDetachDevice */
qemudDomainGetAutostart, /* domainGetAutostart */
qemudDomainSetAutostart, /* domainSetAutostart */
NULL, /* domainGetSchedulerType */
NULL, /* domainGetSchedulerParameters */
NULL, /* domainSetSchedulerParameters */
};
static virNetworkDriver qemuNetworkDriver = {
qemudOpenNetwork, /* open */
qemudCloseNetwork, /* close */
qemudNumNetworks, /* numOfNetworks */
qemudListNetworks, /* listNetworks */
qemudNumDefinedNetworks, /* numOfDefinedNetworks */
qemudListDefinedNetworks, /* listDefinedNetworks */
qemudNetworkLookupByUUID, /* networkLookupByUUID */
qemudNetworkLookupByName, /* networkLookupByName */
qemudNetworkCreate, /* networkCreateXML */
qemudNetworkDefine, /* networkDefineXML */
qemudNetworkUndefine, /* networkUndefine */
qemudNetworkStart, /* networkCreate */
qemudNetworkDestroy, /* networkDestroy */
qemudNetworkDumpXML, /* networkDumpXML */
qemudNetworkGetBridgeName, /* networkGetBridgeName */
qemudNetworkGetAutostart, /* networkGetAutostart */
qemudNetworkSetAutostart, /* networkSetAutostart */
};
static virStateDriver qemuStateDriver = {
qemudStartup,
qemudShutdown,
qemudReload,
qemudActive,
};
/*
* Local variables:
* indent-tabs-mode: nil
* c-indent-level: 4
* c-basic-offset: 4
* tab-width: 4
* End:
*/
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