/**
* virStringListRemove:
* @strings: a NULL-terminated array of strings
* @item: string to remove
*
* Remove every occurrence of @item in list of @strings.
*/
void
virStringListRemove(char ***strings,
const char *item)
{
size_t r, w = 0;
if (!strings || !*strings)
return;
for (r = 0; (*strings)[r]; r++) {
if (STREQ((*strings)[r], item)) {
VIR_FREE((*strings)[r]);
continue;
}
if (r != w)
(*strings)[w] = (*strings)[r];
w++;
}
if (w == 0) {
VIR_FREE(*strings);
} else {
(*strings)[w] = NULL;
ignore_value(VIR_REALLOC_N(*strings, w + 1));
}
}
void virNodeDeviceObjRemove(virNodeDeviceObjListPtr devs,
const virNodeDeviceObjPtr dev)
{
unsigned int i;
virNodeDeviceObjUnlock(dev);
for (i = 0; i < devs->count; i++) {
virNodeDeviceObjLock(dev);
if (devs->objs[i] == dev) {
virNodeDeviceObjUnlock(dev);
virNodeDeviceObjFree(devs->objs[i]);
if (i < (devs->count - 1))
memmove(devs->objs + i, devs->objs + i + 1,
sizeof(*(devs->objs)) * (devs->count - (i + 1)));
if (VIR_REALLOC_N(devs->objs, devs->count - 1) < 0) {
; /* Failure to reduce memory allocation isn't fatal */
}
devs->count--;
break;
}
virNodeDeviceObjUnlock(dev);
}
}
int virCondWait(virCondPtr c, virMutexPtr m)
{
HANDLE event = virThreadLocalGet(&virCondEvent);
if (!event) {
event = CreateEvent(0, FALSE, FALSE, NULL);
if (!event) {
return -1;
}
virThreadLocalSet(&virCondEvent, event);
}
virMutexLock(&c->lock);
if (VIR_REALLOC_N(c->waiters, c->nwaiters + 1) < 0) {
virMutexUnlock(&c->lock);
return -1;
}
c->waiters[c->nwaiters] = event;
c->nwaiters++;
virMutexUnlock(&c->lock);
virMutexUnlock(m);
if (WaitForSingleObject(event, INFINITE) == WAIT_FAILED) {
virMutexLock(m);
errno = EINVAL;
return -1;
}
virMutexLock(m);
return 0;
}
static int virJSONParserHandleStartArray(void *ctx)
{
virJSONParserPtr parser = ctx;
virJSONValuePtr value = virJSONValueNewArray();
VIR_DEBUG("parser=%p", parser);
if (!value)
return 0;
if (virJSONParserInsertValue(parser, value) < 0) {
virJSONValueFree(value);
return 0;
}
if (VIR_REALLOC_N(parser->state,
parser->nstate + 1) < 0)
return 0;
parser->state[parser->nstate].value = value;
parser->state[parser->nstate].key = NULL;
parser->nstate++;
return 1;
}
/**
* virConfReadFile:
* @filename: the path to the configuration file.
* @flags: combination of virConfFlag(s)
*
* Reads a configuration file.
*
* Returns a handle to lookup settings or NULL if it failed to
* read or parse the file, use virConfFree() to free the data.
*/
virConfPtr
virConfReadFile(const char *filename, unsigned int flags)
{
char *content;
int len;
virConfPtr conf = NULL;
VIR_DEBUG("filename=%s", NULLSTR(filename));
if (filename == NULL) {
virConfError(NULL, VIR_ERR_INVALID_ARG, __FUNCTION__);
return NULL;
}
if ((len = virFileReadAll(filename, MAX_CONFIG_FILE_SIZE, &content)) < 0)
return NULL;
if (len && len < MAX_CONFIG_FILE_SIZE && content[len - 1] != '\n') {
VIR_DEBUG("appending newline to busted config file %s", filename);
if (VIR_REALLOC_N(content, len + 2) < 0)
goto cleanup;
content[len++] = '\n';
content[len] = '\0';
}
conf = virConfParse(filename, content, len, flags);
cleanup:
VIR_FREE(content);
return conf;
}
int virJSONValueObjectAppend(virJSONValuePtr object, const char *key, virJSONValuePtr value)
{
char *newkey;
if (object->type != VIR_JSON_TYPE_OBJECT)
return -1;
if (virJSONValueObjectHasKey(object, key))
return -1;
if (!(newkey = strdup(key)))
return -1;
if (VIR_REALLOC_N(object->data.object.pairs,
object->data.object.npairs + 1) < 0) {
VIR_FREE(newkey);
return -1;
}
object->data.object.pairs[object->data.object.npairs].key = newkey;
object->data.object.pairs[object->data.object.npairs].value = value;
object->data.object.npairs++;
return 0;
}
static int
hostsfileAdd(dnsmasqHostsfile *hostsfile,
const char *mac,
virSocketAddr *ip,
const char *name)
{
char *ipstr = NULL;
if (VIR_REALLOC_N(hostsfile->hosts, hostsfile->nhosts + 1) < 0)
goto alloc_error;
if (!(ipstr = virSocketAddrFormat(ip)))
return -1;
if (name) {
if (virAsprintf(&hostsfile->hosts[hostsfile->nhosts].host, "%s,%s,%s",
mac, ipstr, name) < 0) {
goto alloc_error;
}
} else {
if (virAsprintf(&hostsfile->hosts[hostsfile->nhosts].host, "%s,%s",
mac, ipstr) < 0) {
goto alloc_error;
}
}
VIR_FREE(ipstr);
hostsfile->nhosts++;
return 0;
alloc_error:
virReportOOMError();
VIR_FREE(ipstr);
return -1;
}
virInterfaceObjPtr virInterfaceAssignDef(virInterfaceObjListPtr interfaces,
virInterfaceDefPtr def)
{
virInterfaceObjPtr iface;
if ((iface = virInterfaceFindByName(interfaces, def->name))) {
virInterfaceDefFree(iface->def);
iface->def = def;
return iface;
}
if (VIR_ALLOC(iface) < 0)
return NULL;
if (virMutexInit(&iface->lock) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("cannot initialize mutex"));
VIR_FREE(iface);
return NULL;
}
virInterfaceObjLock(iface);
iface->def = def;
if (VIR_REALLOC_N(interfaces->objs, interfaces->count + 1) < 0) {
VIR_FREE(iface);
return NULL;
}
interfaces->objs[interfaces->count] = iface;
interfaces->count++;
return iface;
}
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 int
virObjectEventCallbackListPurgeMarked(virObjectEventCallbackListPtr cbList)
{
int old_count = cbList->count;
int n;
for (n = 0; n < cbList->count; n++) {
if (cbList->callbacks[n]->deleted) {
virFreeCallback freecb = cbList->callbacks[n]->freecb;
if (freecb)
(*freecb)(cbList->callbacks[n]->opaque);
virObjectUnref(cbList->callbacks[n]->conn);
VIR_FREE(cbList->callbacks[n]);
if (n < (cbList->count - 1))
memmove(cbList->callbacks + n,
cbList->callbacks + n + 1,
sizeof(*(cbList->callbacks)) *
(cbList->count - (n + 1)));
cbList->count--;
n--;
}
}
if (cbList->count < old_count &&
VIR_REALLOC_N(cbList->callbacks, cbList->count) < 0) {
; /* Failure to reduce memory allocation isn't fatal */
}
return 0;
}
static void
virConsoleEventOnStdout(int watch ATTRIBUTE_UNUSED,
int fd,
int events,
void *opaque)
{
virConsolePtr con = opaque;
virObjectLock(con);
/* we got late event after console was shutdown */
if (!con->st)
goto cleanup;
if (events & VIR_EVENT_HANDLE_WRITABLE &&
con->streamToTerminal.offset) {
ssize_t done;
size_t avail;
done = write(fd,
con->streamToTerminal.data,
con->streamToTerminal.offset);
if (done < 0) {
if (errno != EAGAIN) {
virReportSystemError(errno, "%s", _("cannot write to stdout"));
virConsoleShutdown(con);
}
goto cleanup;
}
memmove(con->streamToTerminal.data,
con->streamToTerminal.data + done,
con->streamToTerminal.offset - done);
con->streamToTerminal.offset -= done;
avail = con->streamToTerminal.length - con->streamToTerminal.offset;
if (avail > 1024) {
ignore_value(VIR_REALLOC_N(con->streamToTerminal.data,
con->streamToTerminal.offset + 1024));
con->streamToTerminal.length = con->streamToTerminal.offset + 1024;
}
}
if (!con->streamToTerminal.offset)
virEventUpdateHandle(con->stdoutWatch, 0);
if (events & VIR_EVENT_HANDLE_ERROR) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("IO error stdout"));
virConsoleShutdown(con);
goto cleanup;
}
if (events & VIR_EVENT_HANDLE_HANGUP) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("EOF on stdout"));
virConsoleShutdown(con);
goto cleanup;
}
cleanup:
virObjectUnlock(con);
}
int virNetMessageEncodePayload(virNetMessagePtr msg,
xdrproc_t filter,
void *data)
{
XDR xdr;
unsigned int msglen;
/* Serialise payload of the message. This assumes that
* virNetMessageEncodeHeader has already been run, so
* just appends to that data */
xdrmem_create(&xdr, msg->buffer + msg->bufferOffset,
msg->bufferLength - msg->bufferOffset, XDR_ENCODE);
/* Try to encode the payload. If the buffer is too small increase it. */
while (!(*filter)(&xdr, data, 0)) {
unsigned int newlen = msg->bufferLength - VIR_NET_MESSAGE_LEN_MAX;
newlen *= 2;
if (newlen > VIR_NET_MESSAGE_MAX) {
virReportError(VIR_ERR_RPC, "%s", _("Unable to encode message payload"));
goto error;
}
xdr_destroy(&xdr);
msg->bufferLength = newlen + VIR_NET_MESSAGE_LEN_MAX;
if (VIR_REALLOC_N(msg->buffer, msg->bufferLength) < 0)
goto error;
xdrmem_create(&xdr, msg->buffer + msg->bufferOffset,
msg->bufferLength - msg->bufferOffset, XDR_ENCODE);
VIR_DEBUG("Increased message buffer length = %zu", msg->bufferLength);
}
/* Get the length stored in buffer. */
msg->bufferOffset += xdr_getpos(&xdr);
xdr_destroy(&xdr);
/* Re-encode the length word. */
VIR_DEBUG("Encode length as %zu", msg->bufferOffset);
xdrmem_create(&xdr, msg->buffer, VIR_NET_MESSAGE_HEADER_XDR_LEN, XDR_ENCODE);
msglen = msg->bufferOffset;
if (!xdr_u_int(&xdr, &msglen)) {
virReportError(VIR_ERR_RPC, "%s", _("Unable to encode message length"));
goto error;
}
xdr_destroy(&xdr);
msg->bufferLength = msg->bufferOffset;
msg->bufferOffset = 0;
return 0;
error:
xdr_destroy(&xdr);
return -1;
}
/**
* virNWFilterRuleInstAddData:
* @res : pointer to virNWFilterRuleInst object collecting the instantiation
* data of a single firewall rule.
* @data : the opaque data that the driver wants to add
*
* Add instantiation data to a firewall rule. An instantiated firewall
* rule may hold multiple data structure representing its instantiation
* data. This may for example be the case if a rule has been defined
* for bidirectional traffic and data needs to be added to the incoming
* and outgoing chains.
*
* Returns 0 in case of success, -1 in case of an error.
*/
int
virNWFilterRuleInstAddData(virNWFilterRuleInstPtr res,
void *data)
{
if (VIR_REALLOC_N(res->data, res->ndata+1) < 0)
return -1;
res->data[res->ndata++] = data;
return 0;
}
static void
virConsoleEventOnStdin(int watch ATTRIBUTE_UNUSED,
int fd ATTRIBUTE_UNUSED,
int events,
void *opaque)
{
virConsolePtr con = opaque;
if (events & VIR_EVENT_HANDLE_READABLE) {
size_t avail = con->terminalToStream.length -
con->terminalToStream.offset;
int got;
if (avail < 1024) {
if (VIR_REALLOC_N(con->terminalToStream.data,
con->terminalToStream.length + 1024) < 0) {
virReportOOMError();
virConsoleShutdown(con);
return;
}
con->terminalToStream.length += 1024;
avail += 1024;
}
got = read(fd,
con->terminalToStream.data +
con->terminalToStream.offset,
avail);
if (got < 0) {
if (errno != EAGAIN) {
virConsoleShutdown(con);
}
return;
}
if (got == 0) {
virConsoleShutdown(con);
return;
}
if (con->terminalToStream.data[con->terminalToStream.offset] == con->escapeChar) {
virConsoleShutdown(con);
return;
}
con->terminalToStream.offset += got;
if (con->terminalToStream.offset)
virStreamEventUpdateCallback(con->st,
VIR_STREAM_EVENT_READABLE |
VIR_STREAM_EVENT_WRITABLE);
}
if (events & VIR_EVENT_HANDLE_ERROR ||
events & VIR_EVENT_HANDLE_HANGUP) {
virConsoleShutdown(con);
}
}
static int
virStorageBackendMpathNewVol(virStoragePoolObjPtr pool,
const int devnum,
const char *dev)
{
virStorageVolDefPtr vol;
int ret = -1;
if (VIR_ALLOC(vol) < 0) {
virReportOOMError();
goto cleanup;
}
vol->type = VIR_STORAGE_VOL_BLOCK;
if (virAsprintf(&(vol->name), "dm-%u", devnum) < 0) {
virReportOOMError();
goto cleanup;
}
if (virAsprintf(&vol->target.path, "/dev/%s", dev) < 0) {
virReportOOMError();
goto cleanup;
}
if (virStorageBackendMpathUpdateVolTargetInfo(&vol->target,
&vol->allocation,
&vol->capacity) < 0) {
goto cleanup;
}
/* XXX should use logical unit's UUID instead */
vol->key = strdup(vol->target.path);
if (vol->key == NULL) {
virReportOOMError();
goto cleanup;
}
if (VIR_REALLOC_N(pool->volumes.objs,
pool->volumes.count + 1) < 0) {
virReportOOMError();
goto cleanup;
}
pool->volumes.objs[pool->volumes.count++] = vol;
pool->def->capacity += vol->capacity;
pool->def->allocation += vol->allocation;
ret = 0;
cleanup:
if (ret != 0)
virStorageVolDefFree(vol);
return ret;
}
/* Note: There are many additional dhcp-host specifications
* supported by dnsmasq. There are only the basic ones.
*/
static int
hostsfileAdd(dnsmasqHostsfile *hostsfile,
const char *mac,
virSocketAddr *ip,
const char *name,
const char *id,
bool ipv6)
{
char *ipstr = NULL;
if (VIR_REALLOC_N(hostsfile->hosts, hostsfile->nhosts + 1) < 0)
goto alloc_error;
if (!(ipstr = virSocketAddrFormat(ip)))
return -1;
/* the first test determines if it is a dhcpv6 host */
if (ipv6) {
if (name && id) {
if (virAsprintf(&hostsfile->hosts[hostsfile->nhosts].host,
"id:%s,%s,[%s]", id, name, ipstr) < 0)
goto alloc_error;
} else if (name && !id) {
if (virAsprintf(&hostsfile->hosts[hostsfile->nhosts].host,
"%s,[%s]", name, ipstr) < 0)
goto alloc_error;
} else if (!name && id) {
if (virAsprintf(&hostsfile->hosts[hostsfile->nhosts].host,
"id:%s,[%s]", id, ipstr) < 0)
goto alloc_error;
}
} else if (name && mac) {
if (virAsprintf(&hostsfile->hosts[hostsfile->nhosts].host, "%s,%s,%s",
mac, ipstr, name) < 0)
goto alloc_error;
} else if (name && !mac){
if (virAsprintf(&hostsfile->hosts[hostsfile->nhosts].host, "%s,%s",
name, ipstr) < 0)
goto alloc_error;
} else {
if (virAsprintf(&hostsfile->hosts[hostsfile->nhosts].host, "%s,%s",
mac, ipstr) < 0)
goto alloc_error;
}
VIR_FREE(ipstr);
hostsfile->nhosts++;
return 0;
alloc_error:
virReportOOMError();
VIR_FREE(ipstr);
return -1;
}
/**
* virNWFilterRuleInstAddData:
* @res : pointer to virNWFilterRuleInst object collecting the instantiation
* data of a single firewall rule.
* @data : the opaque data that the driver wants to add
*
* Add instantiation data to a firewall rule. An instantiated firewall
* rule may hold multiple data structure representing its instantiation
* data. This may for example be the case if a rule has been defined
* for bidirectional traffic and data needs to be added to the incoming
* and outgoing chains.
*
* Returns 0 in case of success, -1 in case of an error.
*/
int
virNWFilterRuleInstAddData(virNWFilterRuleInstPtr res,
void *data)
{
if (VIR_REALLOC_N(res->data, res->ndata+1) < 0) {
virReportOOMError();
return -1;
}
res->data[res->ndata++] = data;
return 0;
}
/* Ensure there is space to store at least one more parameter
* at the end of the set.
*/
static int
grow_qparam_set (struct qparam_set *ps)
{
if (ps->n >= ps->alloc) {
if (VIR_REALLOC_N(ps->p, ps->alloc * 2) < 0) {
virReportOOMError();
return -1;
}
ps->alloc *= 2;
}
return 0;
}
int virNetMessageEncodePayloadRaw(virNetMessagePtr msg,
const char *data,
size_t len)
{
XDR xdr;
unsigned int msglen;
/* If the message buffer is too small for the payload increase it accordingly. */
if ((msg->bufferLength - msg->bufferOffset) < len) {
if ((msg->bufferOffset + len) >
(VIR_NET_MESSAGE_MAX + VIR_NET_MESSAGE_LEN_MAX)) {
virReportError(VIR_ERR_RPC,
_("Stream data too long to send "
"(%zu bytes needed, %zu bytes available)"),
len,
VIR_NET_MESSAGE_MAX +
VIR_NET_MESSAGE_LEN_MAX -
msg->bufferOffset);
return -1;
}
msg->bufferLength = msg->bufferOffset + len;
if (VIR_REALLOC_N(msg->buffer, msg->bufferLength) < 0)
return -1;
VIR_DEBUG("Increased message buffer length = %zu", msg->bufferLength);
}
memcpy(msg->buffer + msg->bufferOffset, data, len);
msg->bufferOffset += len;
/* Re-encode the length word. */
VIR_DEBUG("Encode length as %zu", msg->bufferOffset);
xdrmem_create(&xdr, msg->buffer, VIR_NET_MESSAGE_HEADER_XDR_LEN, XDR_ENCODE);
msglen = msg->bufferOffset;
if (!xdr_u_int(&xdr, &msglen)) {
virReportError(VIR_ERR_RPC, "%s", _("Unable to encode message length"));
goto error;
}
xdr_destroy(&xdr);
msg->bufferLength = msg->bufferOffset;
msg->bufferOffset = 0;
return 0;
error:
xdr_destroy(&xdr);
return -1;
}
static int lxcContainerUnmountOldFS(void)
{
struct mntent mntent;
char **mounts = NULL;
int nmounts = 0;
FILE *procmnt;
int i;
char mntbuf[1024];
if (!(procmnt = setmntent("/proc/mounts", "r"))) {
virReportSystemError(errno, "%s",
_("Failed to read /proc/mounts"));
return -1;
}
while (getmntent_r(procmnt, &mntent, mntbuf, sizeof(mntbuf)) != NULL) {
VIR_DEBUG("Got %s", mntent.mnt_dir);
if (!STRPREFIX(mntent.mnt_dir, "/.oldroot"))
continue;
if (VIR_REALLOC_N(mounts, nmounts+1) < 0) {
endmntent(procmnt);
virReportOOMError();
return -1;
}
if (!(mounts[nmounts++] = strdup(mntent.mnt_dir))) {
endmntent(procmnt);
virReportOOMError();
return -1;
}
}
endmntent(procmnt);
if (mounts)
qsort(mounts, nmounts, sizeof(mounts[0]),
lxcContainerChildMountSort);
for (i = 0 ; i < nmounts ; i++) {
VIR_DEBUG("Umount %s", mounts[i]);
if (umount(mounts[i]) < 0) {
virReportSystemError(errno,
_("Failed to unmount '%s'"),
mounts[i]);
return -1;
}
VIR_FREE(mounts[i]);
}
VIR_FREE(mounts);
return 0;
}
int virJSONValueArrayAppend(virJSONValuePtr array, virJSONValuePtr value)
{
if (array->type != VIR_JSON_TYPE_ARRAY)
return -1;
if (VIR_REALLOC_N(array->data.array.values,
array->data.array.nvalues + 1) < 0)
return -1;
array->data.array.values[array->data.array.nvalues] = value;
array->data.array.nvalues++;
return 0;
}
static int
virStorageBackendLogicalFindPoolSourcesFunc(char **const groups,
void *data)
{
virStoragePoolSourceListPtr sourceList = data;
char *pvname = NULL;
char *vgname = NULL;
size_t i;
virStoragePoolSourceDevicePtr dev;
virStoragePoolSource *thisSource;
if (VIR_STRDUP(pvname, groups[0]) < 0 ||
VIR_STRDUP(vgname, groups[1]) < 0)
goto error;
thisSource = NULL;
for (i = 0; i < sourceList->nsources; i++) {
if (STREQ(sourceList->sources[i].name, vgname)) {
thisSource = &sourceList->sources[i];
break;
}
}
if (thisSource == NULL) {
if (!(thisSource = virStoragePoolSourceListNewSource(sourceList)))
goto error;
thisSource->name = vgname;
}
else
VIR_FREE(vgname);
if (VIR_REALLOC_N(thisSource->devices, thisSource->ndevice + 1) != 0)
goto error;
dev = &thisSource->devices[thisSource->ndevice];
thisSource->ndevice++;
thisSource->format = VIR_STORAGE_POOL_LOGICAL_LVM2;
memset(dev, 0, sizeof(*dev));
dev->path = pvname;
return 0;
error:
VIR_FREE(pvname);
VIR_FREE(vgname);
return -1;
}
/*
* @msg: the outgoing message, whose header to encode
*
* Encodes the length word and header of the message, setting the
* message offset ready to encode the payload. Leaves space
* for the length field later. Upon return bufferLength will
* refer to the total available space for message, while
* bufferOffset will refer to current space used by header
*
* returns 0 if successfully encoded, -1 upon fatal error
*/
int virNetMessageEncodeHeader(virNetMessagePtr msg)
{
XDR xdr;
int ret = -1;
unsigned int len = 0;
msg->bufferLength = VIR_NET_MESSAGE_MAX + VIR_NET_MESSAGE_LEN_MAX;
if (VIR_REALLOC_N(msg->buffer, msg->bufferLength) < 0) {
virReportOOMError();
return ret;
}
msg->bufferOffset = 0;
/* Format the header. */
xdrmem_create(&xdr,
msg->buffer,
msg->bufferLength,
XDR_ENCODE);
/* The real value is filled in shortly */
if (!xdr_u_int(&xdr, &len)) {
virReportError(VIR_ERR_RPC, "%s", _("Unable to encode message length"));
goto cleanup;
}
if (!xdr_virNetMessageHeader(&xdr, &msg->header)) {
virReportError(VIR_ERR_RPC, "%s", _("Unable to encode message header"));
goto cleanup;
}
len = xdr_getpos(&xdr);
xdr_setpos(&xdr, 0);
/* Fill in current length - may be re-written later
* if a payload is added
*/
if (!xdr_u_int(&xdr, &len)) {
virReportError(VIR_ERR_RPC, "%s", _("Unable to re-encode message length"));
goto cleanup;
}
msg->bufferOffset += len;
ret = 0;
cleanup:
xdr_destroy(&xdr);
return ret;
}
int virNetMessageDecodeLength(virNetMessagePtr msg)
{
XDR xdr;
unsigned int len;
int ret = -1;
xdrmem_create(&xdr, msg->buffer,
msg->bufferLength, XDR_DECODE);
if (!xdr_u_int(&xdr, &len)) {
virReportError(VIR_ERR_RPC, "%s", _("Unable to decode message length"));
goto cleanup;
}
msg->bufferOffset = xdr_getpos(&xdr);
if (len < VIR_NET_MESSAGE_LEN_MAX) {
virReportError(VIR_ERR_RPC,
_("packet %d bytes received from server too small, want %d"),
len, VIR_NET_MESSAGE_LEN_MAX);
goto cleanup;
}
/* Length includes length word - adjust to real length to read. */
len -= VIR_NET_MESSAGE_LEN_MAX;
if (len > VIR_NET_MESSAGE_MAX) {
virReportError(VIR_ERR_RPC,
_("packet %d bytes received from server too large, want %d"),
len, VIR_NET_MESSAGE_MAX);
goto cleanup;
}
/* Extend our declared buffer length and carry
on reading the header + payload */
msg->bufferLength += len;
if (VIR_REALLOC_N(msg->buffer, msg->bufferLength) < 0) {
virReportOOMError();
goto cleanup;
}
VIR_DEBUG("Got length, now need %zu total (%u more)",
msg->bufferLength, len);
ret = 0;
cleanup:
xdr_destroy(&xdr);
return ret;
}
/* Note: There are many additional dhcp-host specifications
* supported by dnsmasq. There are only the basic ones.
*/
static int
hostsfileAdd(dnsmasqHostsfile *hostsfile,
const char *mac,
virSocketAddr *ip,
const char *name,
const char *id,
const char *leasetime,
bool ipv6)
{
int ret = -1;
char *ipstr = NULL;
virBuffer hostbuf = VIR_BUFFER_INITIALIZER;
if (VIR_REALLOC_N(hostsfile->hosts, hostsfile->nhosts + 1) < 0)
goto error;
if (!(ipstr = virSocketAddrFormat(ip)))
goto error;
/* the first test determines if it is a dhcpv6 host */
if (ipv6) {
if (name && id)
virBufferAsprintf(&hostbuf, "id:%s,%s,[%s]", id, name, ipstr);
else if (name && !id)
virBufferAsprintf(&hostbuf, "%s,[%s]", name, ipstr);
else if (!name && id)
virBufferAsprintf(&hostbuf, "id:%s,[%s]", id, ipstr);
} else if (name && mac) {
virBufferAsprintf(&hostbuf, "%s,%s,%s", mac, ipstr, name);
} else if (name && !mac) {
virBufferAsprintf(&hostbuf, "%s,%s", name, ipstr);
} else {
virBufferAsprintf(&hostbuf, "%s,%s", mac, ipstr);
}
/* The leasetime string already includes comma if there's any value at all */
virBufferAsprintf(&hostbuf, "%s", leasetime);
if (!(hostsfile->hosts[hostsfile->nhosts].host = virBufferContentAndReset (&hostbuf)))
goto error;
hostsfile->nhosts++;
ret = 0;
error:
virBufferFreeAndReset(&hostbuf);
VIR_FREE(ipstr);
return ret;
}
/* allocate a flexible array and fill values(key,val) */
int
allocStringMap(xen_string_string_map **strings, char *key, char *val)
{
int sz = ((*strings) == NULL) ? 0 : (*strings)->size;
sz++;
if (VIR_REALLOC_N(*strings, sizeof(xen_string_string_map) +
sizeof(xen_string_string_map_contents) * sz) < 0)
return -1;
(*strings)->size = sz;
if (VIR_STRDUP((*strings)->contents[sz-1].key, key) < 0 ||
VIR_STRDUP((*strings)->contents[sz-1].val, val) < 0)
goto error;
return 0;
error:
xen_string_string_map_free(*strings);
return -1;
}
/*
* Called when the monitor has incoming data to read
* Call this function while holding the monitor lock.
*
* Returns -1 on error, or number of bytes read
*/
static int
qemuAgentIORead(qemuAgentPtr mon)
{
size_t avail = mon->bufferLength - mon->bufferOffset;
int ret = 0;
if (avail < 1024) {
if (VIR_REALLOC_N(mon->buffer,
mon->bufferLength + 1024) < 0) {
virReportOOMError();
return -1;
}
mon->bufferLength += 1024;
avail += 1024;
}
/* Read as much as we can get into our buffer,
until we block on EAGAIN, or hit EOF */
while (avail > 1) {
int got;
got = read(mon->fd,
mon->buffer + mon->bufferOffset,
avail - 1);
if (got < 0) {
if (errno == EAGAIN)
break;
virReportSystemError(errno, "%s",
_("Unable to read from monitor"));
ret = -1;
break;
}
if (got == 0)
break;
ret += got;
avail -= got;
mon->bufferOffset += got;
mon->buffer[mon->bufferOffset] = '\0';
}
#if DEBUG_IO
VIR_DEBUG("Now read %zu bytes of data", mon->bufferOffset);
#endif
return ret;
}
int parallelsStorageVolDefRemove(virStoragePoolObjPtr privpool,
virStorageVolDefPtr privvol)
{
int ret = -1;
char *xml_path = NULL;
size_t i;
privpool->def->allocation -= privvol->allocation;
privpool->def->available = (privpool->def->capacity -
privpool->def->allocation);
for (i = 0; i < privpool->volumes.count; i++) {
if (privpool->volumes.objs[i] == privvol) {
xml_path = parallelsAddFileExt(privvol->target.path, ".xml");
if (!xml_path)
goto cleanup;
if (unlink(xml_path)) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("Can't remove file '%s'"), xml_path);
goto cleanup;
}
virStorageVolDefFree(privvol);
if (i < (privpool->volumes.count - 1))
memmove(privpool->volumes.objs + i,
privpool->volumes.objs + i + 1,
sizeof(*(privpool->volumes.objs)) *
(privpool->volumes.count - (i + 1)));
if (VIR_REALLOC_N(privpool->volumes.objs,
privpool->volumes.count - 1) < 0) {
; /* Failure to reduce memory allocation isn't fatal */
}
privpool->volumes.count--;
break;
}
}
ret = 0;
cleanup:
VIR_FREE(xml_path);
return ret;
}
static int
virStorageBackendDiskMakeFreeExtent(virStoragePoolObjPtr pool,
char **const groups)
{
virStoragePoolSourceDevicePtr dev = &pool->def->source.devices[0];
if (VIR_REALLOC_N(dev->freeExtents,
dev->nfreeExtent + 1) < 0)
return -1;
memset(dev->freeExtents +
dev->nfreeExtent, 0,
sizeof(dev->freeExtents[0]));
/* set type of free area */
if (STREQ(groups[1], "logical")) {
dev->freeExtents[dev->nfreeExtent].type = VIR_STORAGE_FREE_LOGICAL;
} else {
dev->freeExtents[dev->nfreeExtent].type = VIR_STORAGE_FREE_NORMAL;
}
if (virStrToLong_ull(groups[3], NULL, 10,
&dev->freeExtents[dev->nfreeExtent].start) < 0)
return -1; /* Don't bother to re-alloc freeExtents - it'll be free'd shortly */
if (virStrToLong_ull(groups[4], NULL, 10,
&dev->freeExtents[dev->nfreeExtent].end) < 0)
return -1; /* Don't bother to re-alloc freeExtents - it'll be free'd shortly */
/* first block reported as free, even if it is not */
if (dev->freeExtents[dev->nfreeExtent].start == 0) {
dev->freeExtents[dev->nfreeExtent].start = SECTOR_SIZE;
}
pool->def->available +=
(dev->freeExtents[dev->nfreeExtent].end -
dev->freeExtents[dev->nfreeExtent].start);
if (dev->freeExtents[dev->nfreeExtent].end > pool->def->capacity)
pool->def->capacity = dev->freeExtents[dev->nfreeExtent].end;
dev->nfreeExtent++;
return 0;
}
int
virSCSIDeviceListAdd(virSCSIDeviceListPtr list,
virSCSIDevicePtr dev)
{
if (virSCSIDeviceListFind(list, dev)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Device %s already exists"),
dev->name);
return -1;
}
if (VIR_REALLOC_N(list->devs, list->count + 1) < 0)
return -1;
list->devs[list->count++] = dev;
return 0;
}
