/*
* Release all resources
*/
void
virCommandFree(virCommandPtr cmd)
{
int i;
if (!cmd)
return;
for (i = STDERR_FILENO + 1; i < FD_SETSIZE; i++) {
if (FD_ISSET(i, &cmd->transfer)) {
int tmpfd = i;
VIR_FORCE_CLOSE(tmpfd);
}
}
VIR_FREE(cmd->inbuf);
VIR_FORCE_CLOSE(cmd->outfd);
VIR_FORCE_CLOSE(cmd->errfd);
for (i = 0 ; i < cmd->nargs ; i++)
VIR_FREE(cmd->args[i]);
VIR_FREE(cmd->args);
for (i = 0 ; i < cmd->nenv ; i++)
VIR_FREE(cmd->env[i]);
VIR_FREE(cmd->env);
VIR_FREE(cmd->pwd);
VIR_FREE(cmd->pidfile);
if (cmd->reap)
virCommandAbort(cmd);
VIR_FREE(cmd);
}
static int
virUUIDGenerateRandomBytes(unsigned char *buf,
int buflen)
{
int fd;
if ((fd = open("/dev/urandom", O_RDONLY)) < 0)
return errno;
while (buflen > 0) {
int n;
if ((n = read(fd, buf, buflen)) <= 0) {
if (errno == EINTR)
continue;
VIR_FORCE_CLOSE(fd);
return n < 0 ? errno : ENODATA;
}
buf += n;
buflen -= n;
}
VIR_FORCE_CLOSE(fd);
return 0;
}
static int
virLXCProcessReadLogOutput(virDomainObjPtr vm,
char *logfile,
off_t pos,
char *buf,
size_t buflen)
{
int fd = -1;
int ret;
if ((fd = open(logfile, O_RDONLY)) < 0) {
virReportSystemError(errno,
_("Unable to open log file %s"),
logfile);
return -1;
}
if (lseek(fd, pos, SEEK_SET) < 0) {
virReportSystemError(errno,
_("Unable to seek log file %s to %llu"),
logfile, (unsigned long long)pos);
VIR_FORCE_CLOSE(fd);
return -1;
}
ret = virLXCProcessReadLogOutputData(vm,
fd,
buf,
buflen);
VIR_FORCE_CLOSE(fd);
return ret;
}
static int testRotatingFileInitOne(const char *filename,
off_t size,
char pattern)
{
if (size == (off_t)-1) {
VIR_DEBUG("Deleting %s", filename);
unlink(filename);
} else {
VIR_DEBUG("Creating %s size %zu", filename, (size_t)size);
char buf[1024];
int fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC, 0700);
if (fd < 0) {
fprintf(stderr, "Cannot create %s\n", filename);
return -1;
}
memset(buf, pattern, sizeof(buf));
while (size) {
size_t towrite = size;
if (towrite > sizeof(buf))
towrite = sizeof(buf);
if (safewrite(fd, buf, towrite) != towrite) {
fprintf(stderr, "Cannot write to %s\n", filename);
VIR_FORCE_CLOSE(fd);
return -1;
}
size -= towrite;
}
VIR_FORCE_CLOSE(fd);
}
return 0;
}
int
virtTestCaptureProgramOutput(const char *const argv[], char **buf, int maxlen)
{
int pipefd[2];
int len;
if (pipe(pipefd) < 0)
return -1;
pid_t pid = fork();
switch (pid) {
case 0:
VIR_FORCE_CLOSE(pipefd[0]);
virtTestCaptureProgramExecChild(argv, pipefd[1]);
VIR_FORCE_CLOSE(pipefd[1]);
_exit(1);
case -1:
return -1;
default:
VIR_FORCE_CLOSE(pipefd[1]);
len = virFileReadLimFD(pipefd[0], maxlen, buf);
VIR_FORCE_CLOSE(pipefd[0]);
if (virProcessWait(pid, NULL) < 0)
return -1;
return len;
}
}
/**
* brInit:
* @ctlp: pointer to bridge control return value
*
* Initialize a new bridge layer. In case of success
* @ctlp will contain a pointer to the new bridge structure.
*
* Returns 0 in case of success, an error code otherwise.
*/
int
brInit(brControl **ctlp)
{
int fd;
int flags;
if (!ctlp || *ctlp)
return EINVAL;
fd = socket(AF_INET, SOCK_STREAM, 0);
if (fd < 0)
return errno;
if ((flags = fcntl(fd, F_GETFD)) < 0 ||
fcntl(fd, F_SETFD, flags | FD_CLOEXEC) < 0) {
int err = errno;
VIR_FORCE_CLOSE(fd);
return err;
}
if (VIR_ALLOC(*ctlp) < 0) {
VIR_FORCE_CLOSE(fd);
return ENOMEM;
}
(*ctlp)->fd = fd;
return 0;
}
static int
getDMISystemUUID(char *uuid, int len)
{
unsigned int i = 0;
const char *paths[] = {
"/sys/devices/virtual/dmi/id/product_uuid",
"/sys/class/dmi/id/product_uuid",
NULL
};
while (paths[i]) {
int fd = open(paths[i], O_RDONLY);
if (fd >= 0) {
if (saferead(fd, uuid, len - 1) == len - 1) {
uuid[len - 1] = '\0';
VIR_FORCE_CLOSE(fd);
return 0;
}
VIR_FORCE_CLOSE(fd);
}
i++;
}
return -1;
}
int
virStorageGenerateQcowPassphrase(unsigned char *dest)
{
int fd;
size_t i;
/* A qcow passphrase is up to 16 bytes, with any data following a NUL
ignored. Prohibit control and non-ASCII characters to avoid possible
unpleasant surprises with the qemu monitor input mechanism. */
fd = open("/dev/urandom", O_RDONLY);
if (fd < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Cannot open /dev/urandom"));
return -1;
}
i = 0;
while (i < VIR_STORAGE_QCOW_PASSPHRASE_SIZE) {
ssize_t r;
while ((r = read(fd, dest + i, 1)) == -1 && errno == EINTR)
;
if (r <= 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Cannot read from /dev/urandom"));
VIR_FORCE_CLOSE(fd);
return -1;
}
if (dest[i] >= 0x20 && dest[i] <= 0x7E)
i++; /* Got an acceptable character */
}
VIR_FORCE_CLOSE(fd);
return 0;
}
static int lxcSetupLoopDevice(virDomainFSDefPtr fs)
{
int lofd = -1;
int fsfd = -1;
struct loop_info64 lo;
char *loname = NULL;
int ret = -1;
if ((lofd = lxcGetLoopFD(&loname)) < 0)
return -1;
memset(&lo, 0, sizeof(lo));
lo.lo_flags = LO_FLAGS_AUTOCLEAR;
if ((fsfd = open(fs->src, O_RDWR)) < 0) {
virReportSystemError(errno,
_("Unable to open %s"), fs->src);
goto cleanup;
}
if (ioctl(lofd, LOOP_SET_FD, fsfd) < 0) {
virReportSystemError(errno,
_("Unable to attach %s to loop device"),
fs->src);
goto cleanup;
}
if (ioctl(lofd, LOOP_SET_STATUS64, &lo) < 0) {
virReportSystemError(errno, "%s",
_("Unable to mark loop device as autoclear"));
if (ioctl(lofd, LOOP_CLR_FD, 0) < 0)
VIR_WARN("Unable to detach %s from loop device", fs->src);
goto cleanup;
}
VIR_DEBUG("Attached loop device %s %d to %s", fs->src, lofd, loname);
/*
* We now change it into a block device type, so that
* the rest of container setup 'just works'
*/
fs->type = VIR_DOMAIN_FS_TYPE_BLOCK;
VIR_FREE(fs->src);
fs->src = loname;
loname = NULL;
ret = 0;
cleanup:
VIR_FREE(loname);
VIR_FORCE_CLOSE(fsfd);
if (ret == -1)
VIR_FORCE_CLOSE(lofd);
return lofd;
}
static virNetClientPtr virNetClientNew(virNetSocketPtr sock,
const char *hostname)
{
virNetClientPtr client = NULL;
int wakeupFD[2] = { -1, -1 };
if (pipe2(wakeupFD, O_CLOEXEC) < 0) {
virReportSystemError(errno, "%s",
_("unable to make pipe"));
goto error;
}
if (VIR_ALLOC(client) < 0)
goto no_memory;
client->refs = 1;
if (virMutexInit(&client->lock) < 0)
goto error;
client->sock = sock;
client->wakeupReadFD = wakeupFD[0];
client->wakeupSendFD = wakeupFD[1];
wakeupFD[0] = wakeupFD[1] = -1;
if (hostname &&
!(client->hostname = strdup(hostname)))
goto no_memory;
/* Set up a callback to listen on the socket data */
client->refs++;
if (virNetSocketAddIOCallback(client->sock,
VIR_EVENT_HANDLE_READABLE,
virNetClientIncomingEvent,
client,
virNetClientEventFree) < 0) {
client->refs--;
VIR_DEBUG("Failed to add event watch, disabling events");
}
PROBE(RPC_CLIENT_NEW,
"client=%p refs=%d sock=%p",
client, client->refs, client->sock);
return client;
no_memory:
virReportOOMError();
error:
VIR_FORCE_CLOSE(wakeupFD[0]);
VIR_FORCE_CLOSE(wakeupFD[1]);
virNetClientFree(client);
return NULL;
}
static int
SELinuxInitialize(void)
{
char *ptr = NULL;
int fd = 0;
fd = open(selinux_virtual_domain_context_path(), O_RDONLY);
if (fd < 0) {
virReportSystemError(errno,
_("cannot open SELinux virtual domain context file '%s'"),
selinux_virtual_domain_context_path());
return -1;
}
if (saferead(fd, default_domain_context, sizeof(default_domain_context)) < 0) {
virReportSystemError(errno,
_("cannot read SELinux virtual domain context file %s"),
selinux_virtual_domain_context_path());
VIR_FORCE_CLOSE(fd);
return -1;
}
VIR_FORCE_CLOSE(fd);
ptr = strchrnul(default_domain_context, '\n');
*ptr = '\0';
if ((fd = open(selinux_virtual_image_context_path(), O_RDONLY)) < 0) {
virReportSystemError(errno,
_("cannot open SELinux virtual image context file %s"),
selinux_virtual_image_context_path());
return -1;
}
if (saferead(fd, default_image_context, sizeof(default_image_context)) < 0) {
virReportSystemError(errno,
_("cannot read SELinux virtual image context file %s"),
selinux_virtual_image_context_path());
VIR_FORCE_CLOSE(fd);
return -1;
}
VIR_FORCE_CLOSE(fd);
ptr = strchrnul(default_image_context, '\n');
if (*ptr == '\n') {
*ptr = '\0';
strcpy(default_content_context, ptr+1);
ptr = strchrnul(default_content_context, '\n');
if (*ptr == '\n')
*ptr = '\0';
}
return 0;
}
static int
libxlNextFreeVncPort(libxlDriverPrivatePtr driver, int startPort)
{
int i;
for (i = startPort ; i < LIBXL_VNC_PORT_MAX; i++) {
int fd;
int reuse = 1;
struct sockaddr_in addr;
bool used = false;
if (virBitmapGetBit(driver->reservedVNCPorts,
i - LIBXL_VNC_PORT_MIN, &used) < 0)
VIR_DEBUG("virBitmapGetBit failed on bit %d", i - LIBXL_VNC_PORT_MIN);
if (used)
continue;
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) {
VIR_FORCE_CLOSE(fd);
break;
}
if (bind(fd, (struct sockaddr*)&addr, sizeof(addr)) == 0) {
/* Not in use, lets grab it */
VIR_FORCE_CLOSE(fd);
/* Add port to bitmap of reserved ports */
if (virBitmapSetBit(driver->reservedVNCPorts,
i - LIBXL_VNC_PORT_MIN) < 0) {
VIR_DEBUG("virBitmapSetBit failed on bit %d",
i - LIBXL_VNC_PORT_MIN);
}
return i;
}
VIR_FORCE_CLOSE(fd);
if (errno == EADDRINUSE) {
/* In use, try next */
continue;
}
/* Some other bad failure, get out.. */
break;
}
return -1;
}
static void virLXCControllerConsoleClose(virLXCControllerConsolePtr console)
{
if (console->hostWatch != -1)
virEventRemoveHandle(console->hostWatch);
VIR_FORCE_CLOSE(console->hostFd);
if (console->contWatch != -1)
virEventRemoveHandle(console->contWatch);
VIR_FORCE_CLOSE(console->contFd);
if (console->epollWatch != -1)
virEventRemoveHandle(console->epollWatch);
VIR_FORCE_CLOSE(console->epollFd);
}
static int
virStorageBackendMpathUpdateVolTargetInfo(virStorageVolTargetPtr target,
unsigned long long *allocation,
unsigned long long *capacity)
{
int ret = -1;
int fdret, fd = -1;
if ((fdret = virStorageBackendVolOpen(target->path)) < 0)
goto out;
fd = fdret;
if (virStorageBackendUpdateVolTargetInfoFD(target,
fd,
allocation,
capacity) < 0)
goto out;
if (virStorageBackendDetectBlockVolFormatFD(target, fd) < 0)
goto out;
ret = 0;
out:
VIR_FORCE_CLOSE(fd);
return ret;
}
static void lxcClientIO(int watch ATTRIBUTE_UNUSED, int fd, int events, void *opaque)
{
struct lxcMonitor *monitor = opaque;
char buf[1024];
ssize_t ret;
if (events & (VIR_EVENT_HANDLE_HANGUP |
VIR_EVENT_HANDLE_ERROR)) {
virEventRemoveHandle(monitor->clientWatch);
monitor->clientWatch = -1;
return;
}
reread:
ret = read(fd, buf, sizeof(buf));
if (ret == -1 && errno == EINTR)
goto reread;
if (ret == -1 && errno == EAGAIN)
return;
if (ret == -1) {
lxcError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to read from monitor client"));
virMutexLock(&lock);
quit = true;
virMutexUnlock(&lock);
return;
}
if (ret == 0) {
VIR_DEBUG("Client %d gone", fd);
VIR_FORCE_CLOSE(monitor->clientFd);
virEventRemoveHandle(monitor->clientWatch);
monitor->clientWatch = -1;
}
}
static int
openvzWriteConfigParam(const char * conf_file, const char *param, const char *value)
{
char * temp_file = NULL;
int temp_fd = -1;
FILE *fp;
char *line = NULL;
size_t line_size = 0;
if (virAsprintf(&temp_file, "%s.tmp", conf_file)<0) {
virReportOOMError();
return -1;
}
fp = fopen(conf_file, "r");
if (fp == NULL)
goto error;
temp_fd = open(temp_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (temp_fd == -1) {
goto error;
}
while (1) {
if (getline(&line, &line_size, fp) <= 0)
break;
if (!(STRPREFIX(line, param) && line[strlen(param)] == '=')) {
if (safewrite(temp_fd, line, strlen(line)) !=
strlen(line))
goto error;
}
}
if (safewrite(temp_fd, param, strlen(param)) < 0 ||
safewrite(temp_fd, "=\"", 2) < 0 ||
safewrite(temp_fd, value, strlen(value)) < 0 ||
safewrite(temp_fd, "\"\n", 2) < 0)
goto error;
if (VIR_FCLOSE(fp) < 0)
goto error;
if (VIR_CLOSE(temp_fd) < 0)
goto error;
if (rename(temp_file, conf_file) < 0)
goto error;
VIR_FREE(line);
return 0;
error:
VIR_FREE(line);
VIR_FORCE_FCLOSE(fp);
VIR_FORCE_CLOSE(temp_fd);
if (temp_file)
unlink(temp_file);
VIR_FREE(temp_file);
return -1;
}
int virPidFileWritePath(const char *pidfile,
pid_t pid)
{
int rc;
int fd;
char pidstr[INT_BUFSIZE_BOUND(pid)];
if ((fd = open(pidfile,
O_WRONLY | O_CREAT | O_TRUNC,
S_IRUSR | S_IWUSR)) < 0) {
rc = -errno;
goto cleanup;
}
snprintf(pidstr, sizeof(pidstr), "%lld", (long long) pid);
if (safewrite(fd, pidstr, strlen(pidstr)) < 0) {
rc = -errno;
VIR_FORCE_CLOSE(fd);
goto cleanup;
}
rc = 0;
cleanup:
if (VIR_CLOSE(fd) < 0)
rc = -errno;
return rc;
}
int virNetMessageDupFD(virNetMessagePtr msg,
size_t slot)
{
int fd;
if (slot >= msg->nfds) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("No FD available at slot %zu"), slot);
return -1;
}
if ((fd = dup(msg->fds[slot])) < 0) {
virReportSystemError(errno,
_("Unable to duplicate FD %d"),
msg->fds[slot]);
return -1;
}
if (virSetInherit(fd, false) < 0) {
VIR_FORCE_CLOSE(fd);
virReportSystemError(errno,
_("Cannot set close-on-exec %d"),
fd);
return -1;
}
return fd;
}
static int lxcSetupLoopDevices(virDomainDefPtr def, size_t *nloopDevs, int **loopDevs)
{
size_t i;
int ret = -1;
for (i = 0 ; i < def->nfss ; i++) {
int fd;
if (def->fss[i]->type != VIR_DOMAIN_FS_TYPE_FILE)
continue;
fd = lxcSetupLoopDevice(def->fss[i]);
if (fd < 0)
goto cleanup;
VIR_DEBUG("Saving loop fd %d", fd);
if (VIR_REALLOC_N(*loopDevs, *nloopDevs+1) < 0) {
VIR_FORCE_CLOSE(fd);
virReportOOMError();
goto cleanup;
}
(*loopDevs)[(*nloopDevs)++] = fd;
}
VIR_DEBUG("Setup all loop devices");
ret = 0;
cleanup:
return ret;
}
static void virLXCControllerFree(virLXCControllerPtr ctrl)
{
size_t i;
if (!ctrl)
return;
virLXCControllerStopInit(ctrl);
virSecurityManagerFree(ctrl->securityManager);
for (i = 0 ; i < ctrl->nveths ; i++)
VIR_FREE(ctrl->veths[i]);
VIR_FREE(ctrl->veths);
for (i = 0 ; i < ctrl->nconsoles ; i++)
virLXCControllerConsoleClose(&(ctrl->consoles[i]));
VIR_FREE(ctrl->consoles);
VIR_FORCE_CLOSE(ctrl->handshakeFd);
VIR_FREE(ctrl->devptmx);
virDomainDefFree(ctrl->def);
VIR_FREE(ctrl->name);
if (ctrl->timerShutdown != -1)
virEventRemoveTimeout(ctrl->timerShutdown);
virObjectUnref(ctrl->server);
VIR_FREE(ctrl);
}
static uint32_t
virNetDevVPortProfileGetLldpadPid(void)
{
int fd;
uint32_t pid = 0;
fd = open(LLDPAD_PID_FILE, O_RDONLY);
if (fd >= 0) {
char buffer[10];
if (saferead(fd, buffer, sizeof(buffer)) <= sizeof(buffer)) {
unsigned int res;
char *endptr;
if (virStrToLong_ui(buffer, &endptr, 10, &res) == 0
&& (*endptr == '\0' || c_isspace(*endptr))
&& res != 0) {
pid = res;
} else {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("error parsing pid of lldpad"));
}
}
} else {
virReportSystemError(errno,
_("Error opening file %s"), LLDPAD_PID_FILE);
}
VIR_FORCE_CLOSE(fd);
return pid;
}
static int virLXCControllerSetupLoopDevices(virLXCControllerPtr ctrl)
{
size_t i;
int ret = -1;
for (i = 0 ; i < ctrl->def->nfss ; i++) {
int fd;
if (ctrl->def->fss[i]->type != VIR_DOMAIN_FS_TYPE_FILE)
continue;
fd = virLXCControllerSetupLoopDevice(ctrl->def->fss[i]);
if (fd < 0)
goto cleanup;
VIR_DEBUG("Saving loop fd %d", fd);
if (VIR_EXPAND_N(ctrl->loopDevFds, ctrl->nloopDevs, 1) < 0) {
VIR_FORCE_CLOSE(fd);
virReportOOMError();
goto cleanup;
}
ctrl->loopDevFds[ctrl->nloopDevs - 1] = fd;
}
VIR_DEBUG("Setup all loop devices");
ret = 0;
cleanup:
return ret;
}
void qemuAgentClose(qemuAgentPtr mon)
{
if (!mon)
return;
VIR_DEBUG("mon=%p", mon);
qemuAgentLock(mon);
if (mon->fd >= 0) {
if (mon->watch)
virEventRemoveHandle(mon->watch);
VIR_FORCE_CLOSE(mon->fd);
}
/* If there is somebody waiting for a message
* wake him up. No message will arrive anyway. */
if (mon->msg && !mon->msg->finished) {
mon->msg->finished = 1;
virCondSignal(&mon->notify);
}
qemuAgentUnlock(mon);
virObjectUnref(mon);
}
static int virNetDevBridgeCmd(const char *brname,
u_long op,
void *arg,
size_t argsize)
{
int s;
int ret = -1;
struct ifdrv ifd;
memset(&ifd, 0, sizeof(ifd));
if ((s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0) {
virReportSystemError(errno, "%s",
_("Cannot open network interface control socket"));
return -1;
}
if (virStrcpyStatic(ifd.ifd_name, brname) == NULL) {
virReportSystemError(ERANGE,
_("Network interface name '%s' is too long"),
brname);
goto cleanup;
}
ifd.ifd_cmd = op;
ifd.ifd_len = argsize;
ifd.ifd_data = arg;
ret = ioctl(s, SIOCSDRVSPEC, &ifd);
cleanup:
VIR_FORCE_CLOSE(s);
return ret;
}
static void virNetServerGotInhibitReply(DBusPendingCall *pending,
void *opaque)
{
virNetServerPtr srv = opaque;
DBusMessage *reply;
int fd;
virObjectLock(srv);
srv->autoShutdownCallingInhibit = false;
VIR_DEBUG("srv=%p", srv);
reply = dbus_pending_call_steal_reply(pending);
if (reply == NULL)
goto cleanup;
if (dbus_message_get_args(reply, NULL,
DBUS_TYPE_UNIX_FD, &fd,
DBUS_TYPE_INVALID)) {
if (srv->autoShutdownInhibitions) {
srv->autoShutdownInhibitFd = fd;
} else {
/* We stopped the last VM since we made the inhibit call */
VIR_FORCE_CLOSE(fd);
}
}
dbus_message_unref(reply);
cleanup:
virObjectUnlock(srv);
}
static int virNetDevSetupControlFull(const char *ifname,
struct ifreq *ifr,
int domain,
int type)
{
int fd;
memset(ifr, 0, sizeof(*ifr));
if (virStrcpyStatic(ifr->ifr_name, ifname) == NULL) {
virReportSystemError(ERANGE,
_("Network interface name '%s' is too long"),
ifname);
return -1;
}
if ((fd = socket(domain, type, 0)) < 0) {
virReportSystemError(errno, "%s",
_("Cannot open network interface control socket"));
return -1;
}
if (virSetInherit(fd, false) < 0) {
virReportSystemError(errno, "%s",
_("Cannot set close-on-exec flag for socket"));
VIR_FORCE_CLOSE(fd);
return -1;
}
return fd;
}
/**
* virNetDevSetMAC:
* @ifname: interface name to set MTU for
* @macaddr: MAC address (VIR_MAC_BUFLEN in size)
*
* This function sets the @macaddr for a given interface @ifname. This
* gets rid of the kernel's automatically assigned random MAC.
*
* Returns 0 in case of success or -1 on failure
*/
int virNetDevSetMAC(const char *ifname,
const unsigned char *macaddr)
{
int fd = -1;
int ret = -1;
struct ifreq ifr;
if ((fd = virNetDevSetupControl(ifname, &ifr)) < 0)
return -1;
/* To fill ifr.ifr_hdaddr.sa_family field */
if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0) {
virReportSystemError(errno,
_("Cannot get interface MAC on '%s'"),
ifname);
goto cleanup;
}
memcpy(ifr.ifr_hwaddr.sa_data, macaddr, VIR_MAC_BUFLEN);
if (ioctl(fd, SIOCSIFHWADDR, &ifr) < 0) {
virReportSystemError(errno,
_("Cannot set interface MAC on '%s'"),
ifname);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FORCE_CLOSE(fd);
return ret;
}
static void virLockSpaceResourceFree(virLockSpaceResourcePtr res)
{
if (!res)
return;
if (res->lockHeld &&
(res->flags & VIR_LOCK_SPACE_ACQUIRE_AUTOCREATE)) {
if (res->flags & VIR_LOCK_SPACE_ACQUIRE_SHARED) {
/* We must upgrade to an exclusive lock to ensure
* no one else still has it before trying to delete */
if (virFileLock(res->fd, false, 0, 1) < 0) {
VIR_DEBUG("Could not upgrade shared lease to exclusive, not deleting");
} else {
if (unlink(res->path) < 0 &&
errno != ENOENT) {
char ebuf[1024];
VIR_WARN("Failed to unlink resource %s: %s",
res->path, virStrerror(errno, ebuf, sizeof(ebuf)));
}
}
} else {
if (unlink(res->path) < 0 &&
errno != ENOENT) {
char ebuf[1024];
VIR_WARN("Failed to unlink resource %s: %s",
res->path, virStrerror(errno, ebuf, sizeof(ebuf)));
}
}
}
VIR_FORCE_CLOSE(res->fd);
VIR_FREE(res->path);
VIR_FREE(res->name);
VIR_FREE(res);
}
static int
virStorageBackendSCSIUpdateVolTargetInfo(virStorageVolTargetPtr target,
unsigned long long *allocation,
unsigned long long *capacity)
{
int fdret, fd = -1;
int ret = -1;
struct stat sb;
if ((fdret = virStorageBackendVolOpenCheckMode(target->path, &sb,
VIR_STORAGE_VOL_OPEN_DEFAULT)) < 0)
goto cleanup;
fd = fdret;
if (virStorageBackendUpdateVolTargetInfoFD(target,
fd,
&sb,
allocation,
capacity) < 0)
goto cleanup;
if (virStorageBackendDetectBlockVolFormatFD(target, fd) < 0)
goto cleanup;
ret = 0;
cleanup:
VIR_FORCE_CLOSE(fd);
return ret;
}
int virNetMessageAddFD(virNetMessagePtr msg,
int fd)
{
int newfd = -1;
if ((newfd = dup(fd)) < 0) {
virReportSystemError(errno,
_("Unable to duplicate FD %d"),
fd);
goto error;
}
if (virSetInherit(newfd, false) < 0) {
virReportSystemError(errno,
_("Cannot set close-on-exec %d"),
newfd);
goto error;
}
if (VIR_APPEND_ELEMENT(msg->fds, msg->nfds, newfd) < 0)
goto error;
return 0;
error:
VIR_FORCE_CLOSE(newfd);
return -1;
}