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libvirt/src/conf/storage_conf.c
Ishmanpreet Kaur Khera 32cee5b2f0 Avoid using !STREQ and !STRNEQ 
We have macros for both positive and negative string matching.
Therefore there is no need to use !STREQ or !STRNEQ. At the same
time as we are dropping this, new syntax-check rule is
introduced to make sure we won't introduce it again.

Signed-off-by: Ishmanpreet Kaur Khera <khera.ishman@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2015-10-21 15:03:35 +02:00

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/*
* storage_conf.c: config handling for storage driver
*
* Copyright (C) 2006-2014 Red Hat, Inc.
* Copyright (C) 2006-2008 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, see
* <http://www.gnu.org/licenses/>.
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include <config.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <unistd.h>
#include <errno.h>
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include "virerror.h"
#include "datatypes.h"
#include "storage_conf.h"
#include "virstoragefile.h"
#include "virxml.h"
#include "viruuid.h"
#include "virbuffer.h"
#include "viralloc.h"
#include "virfile.h"
#include "virstring.h"
#include "virlog.h"
#define VIR_FROM_THIS VIR_FROM_STORAGE
VIR_LOG_INIT("conf.storage_conf");
VIR_ENUM_IMPL(virStorageVol,
VIR_STORAGE_VOL_LAST,
"file", "block", "dir", "network", "netdir")
VIR_ENUM_IMPL(virStoragePool,
VIR_STORAGE_POOL_LAST,
"dir", "fs", "netfs",
"logical", "disk", "iscsi",
"scsi", "mpath", "rbd",
"sheepdog", "gluster", "zfs")
VIR_ENUM_IMPL(virStoragePoolFormatFileSystem,
VIR_STORAGE_POOL_FS_LAST,
"auto", "ext2", "ext3",
"ext4", "ufs", "iso9660", "udf",
"gfs", "gfs2", "vfat", "hfs+", "xfs", "ocfs2")
VIR_ENUM_IMPL(virStoragePoolFormatFileSystemNet,
VIR_STORAGE_POOL_NETFS_LAST,
"auto", "nfs", "glusterfs", "cifs")
VIR_ENUM_IMPL(virStoragePoolFormatDisk,
VIR_STORAGE_POOL_DISK_LAST,
"unknown", "dos", "dvh", "gpt",
"mac", "bsd", "pc98", "sun", "lvm2")
VIR_ENUM_IMPL(virStoragePoolFormatLogical,
VIR_STORAGE_POOL_LOGICAL_LAST,
"unknown", "lvm2")
VIR_ENUM_IMPL(virStorageVolFormatDisk,
VIR_STORAGE_VOL_DISK_LAST,
"none", "linux", "fat16",
"fat32", "linux-swap",
"linux-lvm", "linux-raid",
"extended")
VIR_ENUM_IMPL(virStoragePartedFs,
VIR_STORAGE_PARTED_FS_TYPE_LAST,
"ext2", "ext2", "fat16",
"fat32", "linux-swap",
"ext2", "ext2",
"extended")
VIR_ENUM_IMPL(virStoragePoolSourceAdapter,
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_LAST,
"default", "scsi_host", "fc_host")
typedef const char *(*virStorageVolFormatToString)(int format);
typedef int (*virStorageVolFormatFromString)(const char *format);
typedef const char *(*virStoragePoolFormatToString)(int format);
typedef int (*virStoragePoolFormatFromString)(const char *format);
typedef struct _virStorageVolOptions virStorageVolOptions;
typedef virStorageVolOptions *virStorageVolOptionsPtr;
struct _virStorageVolOptions {
int defaultFormat;
virStorageVolFormatToString formatToString;
virStorageVolFormatFromString formatFromString;
};
/* Flags to indicate mandatory components in the pool source */
enum {
VIR_STORAGE_POOL_SOURCE_HOST = (1 << 0),
VIR_STORAGE_POOL_SOURCE_DEVICE = (1 << 1),
VIR_STORAGE_POOL_SOURCE_DIR = (1 << 2),
VIR_STORAGE_POOL_SOURCE_ADAPTER = (1 << 3),
VIR_STORAGE_POOL_SOURCE_NAME = (1 << 4),
VIR_STORAGE_POOL_SOURCE_INITIATOR_IQN = (1 << 5),
VIR_STORAGE_POOL_SOURCE_NETWORK = (1 << 6),
};
typedef struct _virStoragePoolOptions virStoragePoolOptions;
typedef virStoragePoolOptions *virStoragePoolOptionsPtr;
struct _virStoragePoolOptions {
unsigned int flags;
int defaultFormat;
virStoragePoolFormatToString formatToString;
virStoragePoolFormatFromString formatFromString;
};
typedef struct _virStoragePoolTypeInfo virStoragePoolTypeInfo;
typedef virStoragePoolTypeInfo *virStoragePoolTypeInfoPtr;
struct _virStoragePoolTypeInfo {
int poolType;
virStoragePoolOptions poolOptions;
virStorageVolOptions volOptions;
};
static int
virStorageVolumeFormatFromString(const char *format)
{
int ret = virStorageFileFormatTypeFromString(format);
if (ret == VIR_STORAGE_FILE_NONE)
return -1;
return ret;
}
static virStoragePoolTypeInfo poolTypeInfo[] = {
{.poolType = VIR_STORAGE_POOL_LOGICAL,
.poolOptions = {
.flags = (VIR_STORAGE_POOL_SOURCE_NAME |
VIR_STORAGE_POOL_SOURCE_DEVICE),
.defaultFormat = VIR_STORAGE_POOL_LOGICAL_LVM2,
.formatFromString = virStoragePoolFormatLogicalTypeFromString,
.formatToString = virStoragePoolFormatLogicalTypeToString,
},
},
{.poolType = VIR_STORAGE_POOL_DIR,
.volOptions = {
.defaultFormat = VIR_STORAGE_FILE_RAW,
.formatFromString = virStorageVolumeFormatFromString,
.formatToString = virStorageFileFormatTypeToString,
},
},
{.poolType = VIR_STORAGE_POOL_FS,
.poolOptions = {
.flags = (VIR_STORAGE_POOL_SOURCE_DEVICE),
.defaultFormat = VIR_STORAGE_POOL_FS_AUTO,
.formatFromString = virStoragePoolFormatFileSystemTypeFromString,
.formatToString = virStoragePoolFormatFileSystemTypeToString,
},
.volOptions = {
.defaultFormat = VIR_STORAGE_FILE_RAW,
.formatFromString = virStorageVolumeFormatFromString,
.formatToString = virStorageFileFormatTypeToString,
},
},
{.poolType = VIR_STORAGE_POOL_NETFS,
.poolOptions = {
.flags = (VIR_STORAGE_POOL_SOURCE_HOST |
VIR_STORAGE_POOL_SOURCE_DIR),
.defaultFormat = VIR_STORAGE_POOL_NETFS_AUTO,
.formatFromString = virStoragePoolFormatFileSystemNetTypeFromString,
.formatToString = virStoragePoolFormatFileSystemNetTypeToString,
},
.volOptions = {
.defaultFormat = VIR_STORAGE_FILE_RAW,
.formatFromString = virStorageVolumeFormatFromString,
.formatToString = virStorageFileFormatTypeToString,
},
},
{.poolType = VIR_STORAGE_POOL_ISCSI,
.poolOptions = {
.flags = (VIR_STORAGE_POOL_SOURCE_HOST |
VIR_STORAGE_POOL_SOURCE_DEVICE |
VIR_STORAGE_POOL_SOURCE_INITIATOR_IQN),
},
.volOptions = {
.formatToString = virStoragePoolFormatDiskTypeToString,
}
},
{.poolType = VIR_STORAGE_POOL_SCSI,
.poolOptions = {
.flags = (VIR_STORAGE_POOL_SOURCE_ADAPTER),
},
.volOptions = {
.formatToString = virStoragePoolFormatDiskTypeToString,
}
},
{.poolType = VIR_STORAGE_POOL_RBD,
.poolOptions = {
.flags = (VIR_STORAGE_POOL_SOURCE_HOST |
VIR_STORAGE_POOL_SOURCE_NETWORK |
VIR_STORAGE_POOL_SOURCE_NAME),
},
.volOptions = {
.defaultFormat = VIR_STORAGE_FILE_RAW,
.formatToString = virStoragePoolFormatDiskTypeToString,
}
},
{.poolType = VIR_STORAGE_POOL_SHEEPDOG,
.poolOptions = {
.flags = (VIR_STORAGE_POOL_SOURCE_HOST |
VIR_STORAGE_POOL_SOURCE_NETWORK |
VIR_STORAGE_POOL_SOURCE_NAME),
},
.volOptions = {
.defaultFormat = VIR_STORAGE_FILE_RAW,
.formatToString = virStoragePoolFormatDiskTypeToString,
}
},
{.poolType = VIR_STORAGE_POOL_GLUSTER,
.poolOptions = {
.flags = (VIR_STORAGE_POOL_SOURCE_HOST |
VIR_STORAGE_POOL_SOURCE_NETWORK |
VIR_STORAGE_POOL_SOURCE_NAME |
VIR_STORAGE_POOL_SOURCE_DIR),
},
.volOptions = {
.defaultFormat = VIR_STORAGE_FILE_RAW,
.formatToString = virStorageFileFormatTypeToString,
.formatFromString = virStorageVolumeFormatFromString,
}
},
{.poolType = VIR_STORAGE_POOL_MPATH,
.volOptions = {
.formatToString = virStoragePoolFormatDiskTypeToString,
}
},
{.poolType = VIR_STORAGE_POOL_DISK,
.poolOptions = {
.flags = (VIR_STORAGE_POOL_SOURCE_DEVICE),
.defaultFormat = VIR_STORAGE_POOL_DISK_UNKNOWN,
.formatFromString = virStoragePoolFormatDiskTypeFromString,
.formatToString = virStoragePoolFormatDiskTypeToString,
},
.volOptions = {
.defaultFormat = VIR_STORAGE_VOL_DISK_NONE,
.formatFromString = virStorageVolFormatDiskTypeFromString,
.formatToString = virStorageVolFormatDiskTypeToString,
},
},
{.poolType = VIR_STORAGE_POOL_ZFS,
.poolOptions = {
.flags = (VIR_STORAGE_POOL_SOURCE_NAME |
VIR_STORAGE_POOL_SOURCE_DEVICE),
.defaultFormat = VIR_STORAGE_FILE_RAW,
},
},
};
static virStoragePoolTypeInfoPtr
virStoragePoolTypeInfoLookup(int type)
{
size_t i;
for (i = 0; i < ARRAY_CARDINALITY(poolTypeInfo); i++)
if (poolTypeInfo[i].poolType == type)
return &poolTypeInfo[i];
virReportError(VIR_ERR_INTERNAL_ERROR,
_("missing backend for pool type %d"), type);
return NULL;
}
static virStoragePoolOptionsPtr
virStoragePoolOptionsForPoolType(int type)
{
virStoragePoolTypeInfoPtr backend = virStoragePoolTypeInfoLookup(type);
if (backend == NULL)
return NULL;
return &backend->poolOptions;
}
static virStorageVolOptionsPtr
virStorageVolOptionsForPoolType(int type)
{
virStoragePoolTypeInfoPtr backend = virStoragePoolTypeInfoLookup(type);
if (backend == NULL)
return NULL;
return &backend->volOptions;
}
void
virStorageVolDefFree(virStorageVolDefPtr def)
{
size_t i;
if (!def)
return;
VIR_FREE(def->name);
VIR_FREE(def->key);
for (i = 0; i < def->source.nextent; i++)
VIR_FREE(def->source.extents[i].path);
VIR_FREE(def->source.extents);
virStorageSourceClear(&def->target);
VIR_FREE(def);
}
static void
virStoragePoolSourceAdapterClear(virStoragePoolSourceAdapterPtr adapter)
{
if (adapter->type == VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST) {
VIR_FREE(adapter->data.fchost.wwnn);
VIR_FREE(adapter->data.fchost.wwpn);
VIR_FREE(adapter->data.fchost.parent);
} else if (adapter->type ==
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_SCSI_HOST) {
VIR_FREE(adapter->data.scsi_host.name);
}
}
void
virStoragePoolSourceDeviceClear(virStoragePoolSourceDevicePtr dev)
{
VIR_FREE(dev->freeExtents);
VIR_FREE(dev->path);
}
void
virStoragePoolSourceClear(virStoragePoolSourcePtr source)
{
size_t i;
if (!source)
return;
for (i = 0; i < source->nhost; i++)
VIR_FREE(source->hosts[i].name);
VIR_FREE(source->hosts);
for (i = 0; i < source->ndevice; i++)
virStoragePoolSourceDeviceClear(&source->devices[i]);
VIR_FREE(source->devices);
VIR_FREE(source->dir);
VIR_FREE(source->name);
virStoragePoolSourceAdapterClear(&source->adapter);
VIR_FREE(source->initiator.iqn);
virStorageAuthDefFree(source->auth);
VIR_FREE(source->vendor);
VIR_FREE(source->product);
}
void
virStoragePoolSourceFree(virStoragePoolSourcePtr source)
{
virStoragePoolSourceClear(source);
VIR_FREE(source);
}
void
virStoragePoolDefFree(virStoragePoolDefPtr def)
{
if (!def)
return;
VIR_FREE(def->name);
virStoragePoolSourceClear(&def->source);
VIR_FREE(def->target.path);
VIR_FREE(def->target.perms.label);
VIR_FREE(def);
}
void
virStoragePoolObjFree(virStoragePoolObjPtr obj)
{
if (!obj)
return;
virStoragePoolObjClearVols(obj);
virStoragePoolDefFree(obj->def);
virStoragePoolDefFree(obj->newDef);
VIR_FREE(obj->configFile);
VIR_FREE(obj->autostartLink);
virMutexDestroy(&obj->lock);
VIR_FREE(obj);
}
void
virStoragePoolObjListFree(virStoragePoolObjListPtr pools)
{
size_t i;
for (i = 0; i < pools->count; i++)
virStoragePoolObjFree(pools->objs[i]);
VIR_FREE(pools->objs);
pools->count = 0;
}
void
virStoragePoolObjRemove(virStoragePoolObjListPtr pools,
virStoragePoolObjPtr pool)
{
size_t i;
virStoragePoolObjUnlock(pool);
for (i = 0; i < pools->count; i++) {
virStoragePoolObjLock(pools->objs[i]);
if (pools->objs[i] == pool) {
virStoragePoolObjUnlock(pools->objs[i]);
virStoragePoolObjFree(pools->objs[i]);
VIR_DELETE_ELEMENT(pools->objs, i, pools->count);
break;
}
virStoragePoolObjUnlock(pools->objs[i]);
}
}
static int
virStoragePoolDefParseSource(xmlXPathContextPtr ctxt,
virStoragePoolSourcePtr source,
int pool_type,
xmlNodePtr node)
{
int ret = -1;
xmlNodePtr relnode, authnode, *nodeset = NULL;
int nsource;
size_t i;
virStoragePoolOptionsPtr options;
virStorageAuthDefPtr authdef = NULL;
char *name = NULL;
char *port = NULL;
char *adapter_type = NULL;
char *managed = NULL;
int n;
relnode = ctxt->node;
ctxt->node = node;
if ((options = virStoragePoolOptionsForPoolType(pool_type)) == NULL)
goto cleanup;
source->name = virXPathString("string(./name)", ctxt);
if (pool_type == VIR_STORAGE_POOL_RBD && source->name == NULL) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("element 'name' is mandatory for RBD pool"));
goto cleanup;
}
if (options->formatFromString) {
char *format = virXPathString("string(./format/@type)", ctxt);
if (format == NULL)
source->format = options->defaultFormat;
else
source->format = options->formatFromString(format);
if (source->format < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unknown pool format type %s"), format);
VIR_FREE(format);
goto cleanup;
}
VIR_FREE(format);
}
if ((n = virXPathNodeSet("./host", ctxt, &nodeset)) < 0)
goto cleanup;
if (n) {
if (VIR_ALLOC_N(source->hosts, n) < 0)
goto cleanup;
source->nhost = n;
for (i = 0; i < source->nhost; i++) {
name = virXMLPropString(nodeset[i], "name");
if (name == NULL) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool host name"));
goto cleanup;
}
source->hosts[i].name = name;
port = virXMLPropString(nodeset[i], "port");
if (port) {
if (virStrToLong_i(port, NULL, 10, &source->hosts[i].port) < 0) {
virReportError(VIR_ERR_XML_ERROR,
_("Invalid port number: %s"),
port);
goto cleanup;
}
}
}
}
VIR_FREE(nodeset);
source->initiator.iqn = virXPathString("string(./initiator/iqn/@name)", ctxt);
nsource = virXPathNodeSet("./device", ctxt, &nodeset);
if (nsource < 0)
goto cleanup;
for (i = 0; i < nsource; i++) {
virStoragePoolSourceDevice dev = { .path = NULL };
dev.path = virXMLPropString(nodeset[i], "path");
if (dev.path == NULL) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool source device path"));
goto cleanup;
}
if (VIR_APPEND_ELEMENT(source->devices, source->ndevice, dev) < 0) {
virStoragePoolSourceDeviceClear(&dev);
goto cleanup;
}
}
source->dir = virXPathString("string(./dir/@path)", ctxt);
/* In gluster, a missing dir defaults to "/" */
if (!source->dir && pool_type == VIR_STORAGE_POOL_GLUSTER &&
VIR_STRDUP(source->dir, "/") < 0)
goto cleanup;
if ((adapter_type = virXPathString("string(./adapter/@type)", ctxt))) {
if ((source->adapter.type =
virStoragePoolSourceAdapterTypeFromString(adapter_type)) <= 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Unknown pool adapter type '%s'"),
adapter_type);
goto cleanup;
}
if (source->adapter.type ==
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST) {
source->adapter.data.fchost.parent =
virXPathString("string(./adapter/@parent)", ctxt);
managed = virXPathString("string(./adapter/@managed)", ctxt);
if (managed) {
source->adapter.data.fchost.managed =
virTristateBoolTypeFromString(managed);
if (source->adapter.data.fchost.managed < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unknown fc_host managed setting '%s'"),
managed);
goto cleanup;
}
}
source->adapter.data.fchost.wwnn =
virXPathString("string(./adapter/@wwnn)", ctxt);
source->adapter.data.fchost.wwpn =
virXPathString("string(./adapter/@wwpn)", ctxt);
} else if (source->adapter.type ==
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_SCSI_HOST) {
source->adapter.data.scsi_host.name =
virXPathString("string(./adapter/@name)", ctxt);
if (virXPathNode("./adapter/parentaddr", ctxt)) {
xmlNodePtr addrnode = virXPathNode("./adapter/parentaddr/address",
ctxt);
virDevicePCIAddressPtr addr =
&source->adapter.data.scsi_host.parentaddr;
if (!addrnode) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Missing scsi_host PCI address element"));
goto cleanup;
}
source->adapter.data.scsi_host.has_parent = true;
if (virDevicePCIAddressParseXML(addrnode, addr) < 0)
goto cleanup;
if ((virXPathInt("string(./adapter/parentaddr/@unique_id)",
ctxt,
&source->adapter.data.scsi_host.unique_id) < 0) ||
(source->adapter.data.scsi_host.unique_id < 0)) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Missing or invalid scsi adapter "
"'unique_id' value"));
goto cleanup;
}
}
}
} else {
char *wwnn = NULL;
char *wwpn = NULL;
char *parent = NULL;
/* "type" was not specified in the XML, so we must verify that
* "wwnn", "wwpn", "parent", or "parentaddr" are also not in the
* XML. If any are found, then we cannot just use "name" alone".
*/
wwnn = virXPathString("string(./adapter/@wwnn)", ctxt);
wwpn = virXPathString("string(./adapter/@wwpn)", ctxt);
parent = virXPathString("string(./adapter/@parent)", ctxt);
if (wwnn || wwpn || parent) {
VIR_FREE(wwnn);
VIR_FREE(wwpn);
VIR_FREE(parent);
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Use of 'wwnn', 'wwpn', and 'parent' attributes "
"requires use of the adapter 'type'"));
goto cleanup;
}
if (virXPathNode("./adapter/parentaddr", ctxt)) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Use of 'parent' element requires use "
"of the adapter 'type'"));
goto cleanup;
}
/* To keep back-compat, 'type' is not required to specify
* for scsi_host adapter.
*/
if ((source->adapter.data.scsi_host.name =
virXPathString("string(./adapter/@name)", ctxt)))
source->adapter.type =
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_SCSI_HOST;
}
if ((authnode = virXPathNode("./auth", ctxt))) {
if (!(authdef = virStorageAuthDefParse(node->doc, authnode)))
goto cleanup;
if (authdef->authType == VIR_STORAGE_AUTH_TYPE_NONE) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("storage pool missing auth type"));
goto cleanup;
}
source->auth = authdef;
authdef = NULL;
}
source->vendor = virXPathString("string(./vendor/@name)", ctxt);
source->product = virXPathString("string(./product/@name)", ctxt);
ret = 0;
cleanup:
ctxt->node = relnode;
VIR_FREE(port);
VIR_FREE(nodeset);
VIR_FREE(adapter_type);
VIR_FREE(managed);
virStorageAuthDefFree(authdef);
return ret;
}
virStoragePoolSourcePtr
virStoragePoolDefParseSourceString(const char *srcSpec,
int pool_type)
{
xmlDocPtr doc = NULL;
xmlNodePtr node = NULL;
xmlXPathContextPtr xpath_ctxt = NULL;
virStoragePoolSourcePtr def = NULL, ret = NULL;
if (!(doc = virXMLParseStringCtxt(srcSpec,
_("(storage_source_specification)"),
&xpath_ctxt)))
goto cleanup;
if (VIR_ALLOC(def) < 0)
goto cleanup;
if (!(node = virXPathNode("/source", xpath_ctxt))) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("root element was not source"));
goto cleanup;
}
if (virStoragePoolDefParseSource(xpath_ctxt, def, pool_type,
node) < 0)
goto cleanup;
ret = def;
def = NULL;
cleanup:
virStoragePoolSourceFree(def);
xmlFreeDoc(doc);
xmlXPathFreeContext(xpath_ctxt);
return ret;
}
static int
virStorageDefParsePerms(xmlXPathContextPtr ctxt,
virStoragePermsPtr perms,
const char *permxpath)
{
char *mode;
long long val;
int ret = -1;
xmlNodePtr relnode;
xmlNodePtr node;
node = virXPathNode(permxpath, ctxt);
if (node == NULL) {
/* Set default values if there is not <permissions> element */
perms->mode = (mode_t) -1;
perms->uid = (uid_t) -1;
perms->gid = (gid_t) -1;
perms->label = NULL;
return 0;
}
relnode = ctxt->node;
ctxt->node = node;
if ((mode = virXPathString("string(./mode)", ctxt))) {
int tmp;
if (virStrToLong_i(mode, NULL, 8, &tmp) < 0 || (tmp & ~0777)) {
VIR_FREE(mode);
virReportError(VIR_ERR_XML_ERROR, "%s",
_("malformed octal mode"));
goto error;
}
perms->mode = tmp;
VIR_FREE(mode);
} else {
perms->mode = (mode_t) -1;
}
if (virXPathNode("./owner", ctxt) == NULL) {
perms->uid = (uid_t) -1;
} else {
/* We previously could output -1, so continue to parse it */
if (virXPathLongLong("number(./owner)", ctxt, &val) < 0 ||
((uid_t)val != val &&
val != -1)) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("malformed owner element"));
goto error;
}
perms->uid = val;
}
if (virXPathNode("./group", ctxt) == NULL) {
perms->gid = (gid_t) -1;
} else {
/* We previously could output -1, so continue to parse it */
if (virXPathLongLong("number(./group)", ctxt, &val) < 0 ||
((gid_t) val != val &&
val != -1)) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("malformed group element"));
goto error;
}
perms->gid = val;
}
/* NB, we're ignoring missing labels here - they'll simply inherit */
perms->label = virXPathString("string(./label)", ctxt);
ret = 0;
error:
ctxt->node = relnode;
return ret;
}
static virStoragePoolDefPtr
virStoragePoolDefParseXML(xmlXPathContextPtr ctxt)
{
virStoragePoolOptionsPtr options;
virStoragePoolDefPtr ret;
xmlNodePtr source_node;
char *type = NULL;
char *uuid = NULL;
char *target_path = NULL;
if (VIR_ALLOC(ret) < 0)
return NULL;
type = virXPathString("string(./@type)", ctxt);
if (type == NULL) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("storage pool missing type attribute"));
goto error;
}
if ((ret->type = virStoragePoolTypeFromString(type)) < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unknown storage pool type %s"), type);
goto error;
}
if ((options = virStoragePoolOptionsForPoolType(ret->type)) == NULL)
goto error;
source_node = virXPathNode("./source", ctxt);
if (source_node) {
if (virStoragePoolDefParseSource(ctxt, &ret->source, ret->type,
source_node) < 0)
goto error;
}
ret->name = virXPathString("string(./name)", ctxt);
if (ret->name == NULL &&
options->flags & VIR_STORAGE_POOL_SOURCE_NAME)
ret->name = ret->source.name;
if (ret->name == NULL) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing pool source name element"));
goto error;
}
uuid = virXPathString("string(./uuid)", ctxt);
if (uuid == NULL) {
if (virUUIDGenerate(ret->uuid) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unable to generate uuid"));
goto error;
}
} else {
if (virUUIDParse(uuid, ret->uuid) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("malformed uuid element"));
goto error;
}
}
if (options->flags & VIR_STORAGE_POOL_SOURCE_HOST) {
if (!ret->source.nhost) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool source host name"));
goto error;
}
}
if (options->flags & VIR_STORAGE_POOL_SOURCE_DIR) {
if (!ret->source.dir) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool source path"));
goto error;
}
}
if (options->flags & VIR_STORAGE_POOL_SOURCE_NAME) {
if (ret->source.name == NULL) {
/* source name defaults to pool name */
if (VIR_STRDUP(ret->source.name, ret->name) < 0)
goto error;
}
}
if (options->flags & VIR_STORAGE_POOL_SOURCE_ADAPTER) {
if (!ret->source.adapter.type) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool source adapter"));
goto error;
}
if (ret->source.adapter.type ==
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST) {
if (!ret->source.adapter.data.fchost.wwnn ||
!ret->source.adapter.data.fchost.wwpn) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("'wwnn' and 'wwpn' must be specified for adapter "
"type 'fchost'"));
goto error;
}
if (!virValidateWWN(ret->source.adapter.data.fchost.wwnn) ||
!virValidateWWN(ret->source.adapter.data.fchost.wwpn))
goto error;
} else if (ret->source.adapter.type ==
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_SCSI_HOST) {
if (!ret->source.adapter.data.scsi_host.name &&
!ret->source.adapter.data.scsi_host.has_parent) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Either 'name' or 'parent' must be specified "
"for the 'scsi_host' adapter"));
goto error;
}
if (ret->source.adapter.data.scsi_host.name &&
ret->source.adapter.data.scsi_host.has_parent) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Both 'name' and 'parent' cannot be specified "
"for the 'scsi_host' adapter"));
goto error;
}
}
}
/* If DEVICE is the only source type, then its required */
if (options->flags == VIR_STORAGE_POOL_SOURCE_DEVICE) {
if (!ret->source.ndevice) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool source device name"));
goto error;
}
}
/* When we are working with a virtual disk we can skip the target
* path and permissions */
if (!(options->flags & VIR_STORAGE_POOL_SOURCE_NETWORK)) {
if (ret->type == VIR_STORAGE_POOL_LOGICAL) {
if (virAsprintf(&target_path, "/dev/%s", ret->source.name) < 0)
goto error;
} else if (ret->type == VIR_STORAGE_POOL_ZFS) {
if (virAsprintf(&target_path, "/dev/zvol/%s", ret->source.name) < 0)
goto error;
} else {
target_path = virXPathString("string(./target/path)", ctxt);
if (!target_path) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool target path"));
goto error;
}
}
ret->target.path = virFileSanitizePath(target_path);
if (!ret->target.path)
goto error;
if (virStorageDefParsePerms(ctxt, &ret->target.perms,
"./target/permissions") < 0)
goto error;
}
cleanup:
VIR_FREE(uuid);
VIR_FREE(type);
VIR_FREE(target_path);
return ret;
error:
virStoragePoolDefFree(ret);
ret = NULL;
goto cleanup;
}
virStoragePoolDefPtr
virStoragePoolDefParseNode(xmlDocPtr xml,
xmlNodePtr root)
{
xmlXPathContextPtr ctxt = NULL;
virStoragePoolDefPtr def = NULL;
if (!xmlStrEqual(root->name, BAD_CAST "pool")) {
virReportError(VIR_ERR_XML_ERROR,
_("unexpected root element <%s>, "
"expecting <pool>"),
root->name);
goto cleanup;
}
ctxt = xmlXPathNewContext(xml);
if (ctxt == NULL) {
virReportOOMError();
goto cleanup;
}
ctxt->node = root;
def = virStoragePoolDefParseXML(ctxt);
cleanup:
xmlXPathFreeContext(ctxt);
return def;
}
static virStoragePoolDefPtr
virStoragePoolDefParse(const char *xmlStr,
const char *filename)
{
virStoragePoolDefPtr ret = NULL;
xmlDocPtr xml;
if ((xml = virXMLParse(filename, xmlStr, _("(storage_pool_definition)")))) {
ret = virStoragePoolDefParseNode(xml, xmlDocGetRootElement(xml));
xmlFreeDoc(xml);
}
return ret;
}
virStoragePoolDefPtr
virStoragePoolDefParseString(const char *xmlStr)
{
return virStoragePoolDefParse(xmlStr, NULL);
}
virStoragePoolDefPtr
virStoragePoolDefParseFile(const char *filename)
{
return virStoragePoolDefParse(NULL, filename);
}
static int
virStoragePoolSourceFormat(virBufferPtr buf,
virStoragePoolOptionsPtr options,
virStoragePoolSourcePtr src)
{
size_t i, j;
virBufferAddLit(buf, "<source>\n");
virBufferAdjustIndent(buf, 2);
if ((options->flags & VIR_STORAGE_POOL_SOURCE_HOST) && src->nhost) {
for (i = 0; i < src->nhost; i++) {
virBufferEscapeString(buf, "<host name='%s'",
src->hosts[i].name);
if (src->hosts[i].port)
virBufferAsprintf(buf, " port='%d'", src->hosts[i].port);
virBufferAddLit(buf, "/>\n");
}
}
if ((options->flags & VIR_STORAGE_POOL_SOURCE_DEVICE) &&
src->ndevice) {
for (i = 0; i < src->ndevice; i++) {
if (src->devices[i].nfreeExtent) {
virBufferEscapeString(buf, "<device path='%s'>\n",
src->devices[i].path);
virBufferAdjustIndent(buf, 2);
for (j = 0; j < src->devices[i].nfreeExtent; j++) {
virBufferAsprintf(buf, "<freeExtent start='%llu' end='%llu'/>\n",
src->devices[i].freeExtents[j].start,
src->devices[i].freeExtents[j].end);
}
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</device>\n");
} else {
virBufferEscapeString(buf, "<device path='%s'/>\n",
src->devices[i].path);
}
}
}
if (options->flags & VIR_STORAGE_POOL_SOURCE_DIR)
virBufferEscapeString(buf, "<dir path='%s'/>\n", src->dir);
if ((options->flags & VIR_STORAGE_POOL_SOURCE_ADAPTER)) {
if (src->adapter.type == VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST ||
src->adapter.type == VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_SCSI_HOST)
virBufferAsprintf(buf, "<adapter type='%s'",
virStoragePoolSourceAdapterTypeToString(src->adapter.type));
if (src->adapter.type == VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST) {
virBufferEscapeString(buf, " parent='%s'",
src->adapter.data.fchost.parent);
if (src->adapter.data.fchost.managed)
virBufferAsprintf(buf, " managed='%s'",
virTristateBoolTypeToString(src->adapter.data.fchost.managed));
virBufferAsprintf(buf, " wwnn='%s' wwpn='%s'/>\n",
src->adapter.data.fchost.wwnn,
src->adapter.data.fchost.wwpn);
} else if (src->adapter.type ==
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_SCSI_HOST) {
if (src->adapter.data.scsi_host.name) {
virBufferAsprintf(buf, " name='%s'/>\n",
src->adapter.data.scsi_host.name);
} else {
virDevicePCIAddress addr;
virBufferAddLit(buf, ">\n");
virBufferAdjustIndent(buf, 2);
virBufferAsprintf(buf, "<parentaddr unique_id='%d'>\n",
src->adapter.data.scsi_host.unique_id);
virBufferAdjustIndent(buf, 2);
addr = src->adapter.data.scsi_host.parentaddr;
ignore_value(virDevicePCIAddressFormat(buf, addr, false));
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</parentaddr>\n");
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</adapter>\n");
}
}
}
if (options->flags & VIR_STORAGE_POOL_SOURCE_NAME)
virBufferEscapeString(buf, "<name>%s</name>\n", src->name);
if ((options->flags & VIR_STORAGE_POOL_SOURCE_INITIATOR_IQN) &&
src->initiator.iqn) {
virBufferAddLit(buf, "<initiator>\n");
virBufferAdjustIndent(buf, 2);
virBufferEscapeString(buf, "<iqn name='%s'/>\n",
src->initiator.iqn);
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</initiator>\n");
}
if (options->formatToString) {
const char *format = (options->formatToString)(src->format);
if (!format) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown pool format number %d"),
src->format);
return -1;
}
virBufferAsprintf(buf, "<format type='%s'/>\n", format);
}
if (src->auth) {
if (virStorageAuthDefFormat(buf, src->auth) < 0)
return -1;
}
virBufferEscapeString(buf, "<vendor name='%s'/>\n", src->vendor);
virBufferEscapeString(buf, "<product name='%s'/>\n", src->product);
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</source>\n");
return 0;
}
static int
virStoragePoolDefFormatBuf(virBufferPtr buf,
virStoragePoolDefPtr def)
{
virStoragePoolOptionsPtr options;
char uuid[VIR_UUID_STRING_BUFLEN];
const char *type;
options = virStoragePoolOptionsForPoolType(def->type);
if (options == NULL)
return -1;
type = virStoragePoolTypeToString(def->type);
if (!type) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unexpected pool type"));
return -1;
}
virBufferAsprintf(buf, "<pool type='%s'>\n", type);
virBufferAdjustIndent(buf, 2);
virBufferEscapeString(buf, "<name>%s</name>\n", def->name);
virUUIDFormat(def->uuid, uuid);
virBufferAsprintf(buf, "<uuid>%s</uuid>\n", uuid);
virBufferAsprintf(buf, "<capacity unit='bytes'>%llu</capacity>\n",
def->capacity);
virBufferAsprintf(buf, "<allocation unit='bytes'>%llu</allocation>\n",
def->allocation);
virBufferAsprintf(buf, "<available unit='bytes'>%llu</available>\n",
def->available);
if (virStoragePoolSourceFormat(buf, options, &def->source) < 0)
return -1;
/* RBD, Sheepdog, and Gluster devices are not local block devs nor
* files, so they don't have a target */
if (def->type != VIR_STORAGE_POOL_RBD &&
def->type != VIR_STORAGE_POOL_SHEEPDOG &&
def->type != VIR_STORAGE_POOL_GLUSTER) {
virBufferAddLit(buf, "<target>\n");
virBufferAdjustIndent(buf, 2);
virBufferEscapeString(buf, "<path>%s</path>\n", def->target.path);
if (def->target.perms.mode != (mode_t) -1 ||
def->target.perms.uid != (uid_t) -1 ||
def->target.perms.gid != (gid_t) -1 ||
def->target.perms.label) {
virBufferAddLit(buf, "<permissions>\n");
virBufferAdjustIndent(buf, 2);
if (def->target.perms.mode != (mode_t) -1)
virBufferAsprintf(buf, "<mode>0%o</mode>\n",
def->target.perms.mode);
if (def->target.perms.uid != (uid_t) -1)
virBufferAsprintf(buf, "<owner>%d</owner>\n",
(int) def->target.perms.uid);
if (def->target.perms.gid != (gid_t) -1)
virBufferAsprintf(buf, "<group>%d</group>\n",
(int) def->target.perms.gid);
virBufferEscapeString(buf, "<label>%s</label>\n",
def->target.perms.label);
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</permissions>\n");
}
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</target>\n");
}
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</pool>\n");
return 0;
}
char *
virStoragePoolDefFormat(virStoragePoolDefPtr def)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
if (virStoragePoolDefFormatBuf(&buf, def) < 0)
goto error;
if (virBufferCheckError(&buf) < 0)
goto error;
return virBufferContentAndReset(&buf);
error:
virBufferFreeAndReset(&buf);
return NULL;
}
static int
virStorageSize(const char *unit,
const char *val,
unsigned long long *ret)
{
if (virStrToLong_ull(val, NULL, 10, ret) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("malformed capacity element"));
return -1;
}
/* off_t is signed, so you cannot create a file larger than 2**63
* bytes in the first place. */
if (virScaleInteger(ret, unit, 1, LLONG_MAX) < 0)
return -1;
return 0;
}
static virStorageVolDefPtr
virStorageVolDefParseXML(virStoragePoolDefPtr pool,
xmlXPathContextPtr ctxt,
unsigned int flags)
{
virStorageVolDefPtr ret;
virStorageVolOptionsPtr options;
char *type = NULL;
char *allocation = NULL;
char *capacity = NULL;
char *unit = NULL;
char *backingStore = NULL;
xmlNodePtr node;
xmlNodePtr *nodes = NULL;
size_t i;
int n;
virCheckFlags(VIR_VOL_XML_PARSE_NO_CAPACITY |
VIR_VOL_XML_PARSE_OPT_CAPACITY, NULL);
options = virStorageVolOptionsForPoolType(pool->type);
if (options == NULL)
return NULL;
if (VIR_ALLOC(ret) < 0)
return NULL;
ret->name = virXPathString("string(./name)", ctxt);
if (ret->name == NULL) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing volume name element"));
goto error;
}
/* Normally generated by pool refresh, but useful for unit tests */
ret->key = virXPathString("string(./key)", ctxt);
/* Technically overridden by pool refresh, but useful for unit tests */
type = virXPathString("string(./@type)", ctxt);
if (type) {
if ((ret->type = virStorageVolTypeFromString(type)) < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unknown volume type '%s'"), type);
goto error;
}
}
if ((backingStore = virXPathString("string(./backingStore/path)", ctxt))) {
if (VIR_ALLOC(ret->target.backingStore) < 0)
goto error;
ret->target.backingStore->path = backingStore;
backingStore = NULL;
if (options->formatFromString) {
char *format = virXPathString("string(./backingStore/format/@type)", ctxt);
if (format == NULL)
ret->target.backingStore->format = options->defaultFormat;
else
ret->target.backingStore->format = (options->formatFromString)(format);
if (ret->target.backingStore->format < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unknown volume format type %s"), format);
VIR_FREE(format);
goto error;
}
VIR_FREE(format);
}
if (VIR_ALLOC(ret->target.backingStore->perms) < 0)
goto error;
if (virStorageDefParsePerms(ctxt, ret->target.backingStore->perms,
"./backingStore/permissions") < 0)
goto error;
}
capacity = virXPathString("string(./capacity)", ctxt);
unit = virXPathString("string(./capacity/@unit)", ctxt);
if (capacity) {
if (virStorageSize(unit, capacity, &ret->target.capacity) < 0)
goto error;
} else if (!(flags & VIR_VOL_XML_PARSE_NO_CAPACITY) &&
!((flags & VIR_VOL_XML_PARSE_OPT_CAPACITY) && ret->target.backingStore)) {
virReportError(VIR_ERR_XML_ERROR, "%s", _("missing capacity element"));
goto error;
}
VIR_FREE(unit);
allocation = virXPathString("string(./allocation)", ctxt);
if (allocation) {
unit = virXPathString("string(./allocation/@unit)", ctxt);
if (virStorageSize(unit, allocation, &ret->target.allocation) < 0)
goto error;
} else {
ret->target.allocation = ret->target.capacity;
}
ret->target.path = virXPathString("string(./target/path)", ctxt);
if (options->formatFromString) {
char *format = virXPathString("string(./target/format/@type)", ctxt);
if (format == NULL)
ret->target.format = options->defaultFormat;
else
ret->target.format = (options->formatFromString)(format);
if (ret->target.format < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unknown volume format type %s"), format);
VIR_FREE(format);
goto error;
}
VIR_FREE(format);
}
if (VIR_ALLOC(ret->target.perms) < 0)
goto error;
if (virStorageDefParsePerms(ctxt, ret->target.perms,
"./target/permissions") < 0)
goto error;
node = virXPathNode("./target/encryption", ctxt);
if (node != NULL) {
ret->target.encryption = virStorageEncryptionParseNode(ctxt->doc,
node);
if (ret->target.encryption == NULL)
goto error;
}
ret->target.compat = virXPathString("string(./target/compat)", ctxt);
if (virStorageFileCheckCompat(ret->target.compat) < 0)
goto error;
if (virXPathNode("./target/nocow", ctxt))
ret->target.nocow = true;
if (virXPathNode("./target/features", ctxt)) {
if ((n = virXPathNodeSet("./target/features/*", ctxt, &nodes)) < 0)
goto error;
if (!ret->target.compat && VIR_STRDUP(ret->target.compat, "1.1") < 0)
goto error;
if (!(ret->target.features = virBitmapNew(VIR_STORAGE_FILE_FEATURE_LAST)))
goto error;
for (i = 0; i < n; i++) {
int f = virStorageFileFeatureTypeFromString((const char*)nodes[i]->name);
if (f < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, _("unsupported feature %s"),
(const char*)nodes[i]->name);
goto error;
}
ignore_value(virBitmapSetBit(ret->target.features, f));
}
VIR_FREE(nodes);
}
cleanup:
VIR_FREE(nodes);
VIR_FREE(allocation);
VIR_FREE(capacity);
VIR_FREE(unit);
VIR_FREE(type);
VIR_FREE(backingStore);
return ret;
error:
virStorageVolDefFree(ret);
ret = NULL;
goto cleanup;
}
virStorageVolDefPtr
virStorageVolDefParseNode(virStoragePoolDefPtr pool,
xmlDocPtr xml,
xmlNodePtr root,
unsigned int flags)
{
xmlXPathContextPtr ctxt = NULL;
virStorageVolDefPtr def = NULL;
if (!xmlStrEqual(root->name, BAD_CAST "volume")) {
virReportError(VIR_ERR_XML_ERROR,
_("unexpected root element <%s>, "
"expecting <volume>"),
root->name);
goto cleanup;
}
ctxt = xmlXPathNewContext(xml);
if (ctxt == NULL) {
virReportOOMError();
goto cleanup;
}
ctxt->node = root;
def = virStorageVolDefParseXML(pool, ctxt, flags);
cleanup:
xmlXPathFreeContext(ctxt);
return def;
}
static virStorageVolDefPtr
virStorageVolDefParse(virStoragePoolDefPtr pool,
const char *xmlStr,
const char *filename,
unsigned int flags)
{
virStorageVolDefPtr ret = NULL;
xmlDocPtr xml;
if ((xml = virXMLParse(filename, xmlStr, _("(storage_volume_definition)")))) {
ret = virStorageVolDefParseNode(pool, xml, xmlDocGetRootElement(xml), flags);
xmlFreeDoc(xml);
}
return ret;
}
virStorageVolDefPtr
virStorageVolDefParseString(virStoragePoolDefPtr pool,
const char *xmlStr,
unsigned int flags)
{
return virStorageVolDefParse(pool, xmlStr, NULL, flags);
}
virStorageVolDefPtr
virStorageVolDefParseFile(virStoragePoolDefPtr pool,
const char *filename,
unsigned int flags)
{
return virStorageVolDefParse(pool, NULL, filename, flags);
}
static void
virStorageVolTimestampFormat(virBufferPtr buf, const char *name,
struct timespec *ts)
{
if (ts->tv_nsec < 0)
return;
virBufferAsprintf(buf, "<%s>%llu", name,
(unsigned long long) ts->tv_sec);
if (ts->tv_nsec)
virBufferAsprintf(buf, ".%09ld", ts->tv_nsec);
virBufferAsprintf(buf, "</%s>\n", name);
}
static int
virStorageVolTargetDefFormat(virStorageVolOptionsPtr options,
virBufferPtr buf,
virStorageSourcePtr def,
const char *type)
{
virBufferAsprintf(buf, "<%s>\n", type);
virBufferAdjustIndent(buf, 2);
virBufferEscapeString(buf, "<path>%s</path>\n", def->path);
if (options->formatToString) {
const char *format = (options->formatToString)(def->format);
if (!format) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown volume format number %d"),
def->format);
return -1;
}
virBufferAsprintf(buf, "<format type='%s'/>\n", format);
}
if (def->perms &&
(def->perms->mode != (mode_t) -1 ||
def->perms->uid != (uid_t) -1 ||
def->perms->gid != (gid_t) -1 ||
def->perms->label)) {
virBufferAddLit(buf, "<permissions>\n");
virBufferAdjustIndent(buf, 2);
if (def->perms->mode != (mode_t) -1)
virBufferAsprintf(buf, "<mode>0%o</mode>\n",
def->perms->mode);
if (def->perms->uid != (uid_t) -1)
virBufferAsprintf(buf, "<owner>%d</owner>\n",
(int) def->perms->uid);
if (def->perms->gid != (gid_t) -1)
virBufferAsprintf(buf, "<group>%d</group>\n",
(int) def->perms->gid);
virBufferEscapeString(buf, "<label>%s</label>\n",
def->perms->label);
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</permissions>\n");
}
if (def->timestamps) {
virBufferAddLit(buf, "<timestamps>\n");
virBufferAdjustIndent(buf, 2);
virStorageVolTimestampFormat(buf, "atime", &def->timestamps->atime);
virStorageVolTimestampFormat(buf, "mtime", &def->timestamps->mtime);
virStorageVolTimestampFormat(buf, "ctime", &def->timestamps->ctime);
virStorageVolTimestampFormat(buf, "btime", &def->timestamps->btime);
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</timestamps>\n");
}
if (def->encryption &&
virStorageEncryptionFormat(buf, def->encryption) < 0)
return -1;
virBufferEscapeString(buf, "<compat>%s</compat>\n", def->compat);
if (def->features) {
size_t i;
bool empty = virBitmapIsAllClear(def->features);
if (empty) {
virBufferAddLit(buf, "<features/>\n");
} else {
virBufferAddLit(buf, "<features>\n");
virBufferAdjustIndent(buf, 2);
}
for (i = 0; i < VIR_STORAGE_FILE_FEATURE_LAST; i++) {
if (virBitmapIsBitSet(def->features, i))
virBufferAsprintf(buf, "<%s/>\n",
virStorageFileFeatureTypeToString(i));
}
if (!empty) {
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</features>\n");
}
}
virBufferAdjustIndent(buf, -2);
virBufferAsprintf(buf, "</%s>\n", type);
return 0;
}
char *
virStorageVolDefFormat(virStoragePoolDefPtr pool,
virStorageVolDefPtr def)
{
virStorageVolOptionsPtr options;
virBuffer buf = VIR_BUFFER_INITIALIZER;
options = virStorageVolOptionsForPoolType(pool->type);
if (options == NULL)
return NULL;
virBufferAsprintf(&buf, "<volume type='%s'>\n",
virStorageVolTypeToString(def->type));
virBufferAdjustIndent(&buf, 2);
virBufferEscapeString(&buf, "<name>%s</name>\n", def->name);
virBufferEscapeString(&buf, "<key>%s</key>\n", def->key);
virBufferAddLit(&buf, "<source>\n");
virBufferAdjustIndent(&buf, 2);
if (def->source.nextent) {
size_t i;
const char *thispath = NULL;
for (i = 0; i < def->source.nextent; i++) {
if (thispath == NULL ||
STRNEQ(thispath, def->source.extents[i].path)) {
if (thispath != NULL)
virBufferAddLit(&buf, "</device>\n");
virBufferEscapeString(&buf, "<device path='%s'>\n",
def->source.extents[i].path);
}
virBufferAdjustIndent(&buf, 2);
virBufferAsprintf(&buf, "<extent start='%llu' end='%llu'/>\n",
def->source.extents[i].start,
def->source.extents[i].end);
virBufferAdjustIndent(&buf, -2);
thispath = def->source.extents[i].path;
}
if (thispath != NULL)
virBufferAddLit(&buf, "</device>\n");
}
virBufferAdjustIndent(&buf, -2);
virBufferAddLit(&buf, "</source>\n");
virBufferAsprintf(&buf, "<capacity unit='bytes'>%llu</capacity>\n",
def->target.capacity);
virBufferAsprintf(&buf, "<allocation unit='bytes'>%llu</allocation>\n",
def->target.allocation);
if (virStorageVolTargetDefFormat(options, &buf,
&def->target, "target") < 0)
goto cleanup;
if (def->target.backingStore &&
virStorageVolTargetDefFormat(options, &buf,
def->target.backingStore,
"backingStore") < 0)
goto cleanup;
virBufferAdjustIndent(&buf, -2);
virBufferAddLit(&buf, "</volume>\n");
if (virBufferCheckError(&buf) < 0)
goto cleanup;
return virBufferContentAndReset(&buf);
cleanup:
virBufferFreeAndReset(&buf);
return NULL;
}
virStoragePoolObjPtr
virStoragePoolObjFindByUUID(virStoragePoolObjListPtr pools,
const unsigned char *uuid)
{
size_t i;
for (i = 0; i < pools->count; i++) {
virStoragePoolObjLock(pools->objs[i]);
if (!memcmp(pools->objs[i]->def->uuid, uuid, VIR_UUID_BUFLEN))
return pools->objs[i];
virStoragePoolObjUnlock(pools->objs[i]);
}
return NULL;
}
virStoragePoolObjPtr
virStoragePoolObjFindByName(virStoragePoolObjListPtr pools,
const char *name)
{
size_t i;
for (i = 0; i < pools->count; i++) {
virStoragePoolObjLock(pools->objs[i]);
if (STREQ(pools->objs[i]->def->name, name))
return pools->objs[i];
virStoragePoolObjUnlock(pools->objs[i]);
}
return NULL;
}
virStoragePoolObjPtr
virStoragePoolSourceFindDuplicateDevices(virStoragePoolObjPtr pool,
virStoragePoolDefPtr def)
{
size_t i, j;
for (i = 0; i < pool->def->source.ndevice; i++) {
for (j = 0; j < def->source.ndevice; j++) {
if (STREQ(pool->def->source.devices[i].path, def->source.devices[j].path))
return pool;
}
}
return NULL;
}
void
virStoragePoolObjClearVols(virStoragePoolObjPtr pool)
{
size_t i;
for (i = 0; i < pool->volumes.count; i++)
virStorageVolDefFree(pool->volumes.objs[i]);
VIR_FREE(pool->volumes.objs);
pool->volumes.count = 0;
}
virStorageVolDefPtr
virStorageVolDefFindByKey(virStoragePoolObjPtr pool,
const char *key)
{
size_t i;
for (i = 0; i < pool->volumes.count; i++)
if (STREQ(pool->volumes.objs[i]->key, key))
return pool->volumes.objs[i];
return NULL;
}
virStorageVolDefPtr
virStorageVolDefFindByPath(virStoragePoolObjPtr pool,
const char *path)
{
size_t i;
for (i = 0; i < pool->volumes.count; i++)
if (STREQ(pool->volumes.objs[i]->target.path, path))
return pool->volumes.objs[i];
return NULL;
}
virStorageVolDefPtr
virStorageVolDefFindByName(virStoragePoolObjPtr pool,
const char *name)
{
size_t i;
for (i = 0; i < pool->volumes.count; i++)
if (STREQ(pool->volumes.objs[i]->name, name))
return pool->volumes.objs[i];
return NULL;
}
virStoragePoolObjPtr
virStoragePoolObjAssignDef(virStoragePoolObjListPtr pools,
virStoragePoolDefPtr def)
{
virStoragePoolObjPtr pool;
if ((pool = virStoragePoolObjFindByName(pools, def->name))) {
if (!virStoragePoolObjIsActive(pool)) {
virStoragePoolDefFree(pool->def);
pool->def = def;
} else {
virStoragePoolDefFree(pool->newDef);
pool->newDef = def;
}
return pool;
}
if (VIR_ALLOC(pool) < 0)
return NULL;
if (virMutexInit(&pool->lock) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("cannot initialize mutex"));
VIR_FREE(pool);
return NULL;
}
virStoragePoolObjLock(pool);
pool->active = 0;
if (VIR_APPEND_ELEMENT_COPY(pools->objs, pools->count, pool) < 0) {
virStoragePoolObjUnlock(pool);
virStoragePoolObjFree(pool);
return NULL;
}
pool->def = def;
return pool;
}
static virStoragePoolObjPtr
virStoragePoolObjLoad(virStoragePoolObjListPtr pools,
const char *file,
const char *path,
const char *autostartLink)
{
virStoragePoolDefPtr def;
virStoragePoolObjPtr pool;
if (!(def = virStoragePoolDefParseFile(path)))
return NULL;
if (!virFileMatchesNameSuffix(file, def->name, ".xml")) {
virReportError(VIR_ERR_XML_ERROR,
_("Storage pool config filename '%s' does "
"not match pool name '%s'"),
path, def->name);
virStoragePoolDefFree(def);
return NULL;
}
if (!(pool = virStoragePoolObjAssignDef(pools, def))) {
virStoragePoolDefFree(def);
return NULL;
}
VIR_FREE(pool->configFile); /* for driver reload */
if (VIR_STRDUP(pool->configFile, path) < 0) {
virStoragePoolDefFree(def);
return NULL;
}
VIR_FREE(pool->autostartLink); /* for driver reload */
if (VIR_STRDUP(pool->autostartLink, autostartLink) < 0) {
virStoragePoolDefFree(def);
return NULL;
}
pool->autostart = virFileLinkPointsTo(pool->autostartLink,
pool->configFile);
return pool;
}
virStoragePoolObjPtr
virStoragePoolLoadState(virStoragePoolObjListPtr pools,
const char *stateDir,
const char *name)
{
char *stateFile = NULL;
virStoragePoolDefPtr def = NULL;
virStoragePoolObjPtr pool = NULL;
xmlDocPtr xml = NULL;
xmlXPathContextPtr ctxt = NULL;
xmlNodePtr node = NULL;
if (!(stateFile = virFileBuildPath(stateDir, name, ".xml")))
goto error;
if (!(xml = virXMLParseCtxt(stateFile, NULL, _("(pool state)"), &ctxt)))
goto error;
if (!(node = virXPathNode("//pool", ctxt))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not find any 'pool' element in state file"));
goto error;
}
ctxt->node = node;
if (!(def = virStoragePoolDefParseXML(ctxt)))
goto error;
if (STRNEQ(name, def->name)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Storage pool state file '%s' does not match "
"pool name '%s'"),
stateFile, def->name);
goto error;
}
/* create the object */
if (!(pool = virStoragePoolObjAssignDef(pools, def)))
goto error;
/* XXX: future handling of some additional useful status data,
* for now, if a status file for a pool exists, the pool will be marked
* as active
*/
pool->active = 1;
cleanup:
VIR_FREE(stateFile);
xmlFreeDoc(xml);
xmlXPathFreeContext(ctxt);
return pool;
error:
virStoragePoolDefFree(def);
goto cleanup;
}
int
virStoragePoolLoadAllState(virStoragePoolObjListPtr pools,
const char *stateDir)
{
DIR *dir;
struct dirent *entry;
int ret = -1;
if (!(dir = opendir(stateDir))) {
if (errno == ENOENT)
return 0;
virReportSystemError(errno, _("Failed to open dir '%s'"), stateDir);
return -1;
}
while ((ret = virDirRead(dir, &entry, stateDir)) > 0) {
virStoragePoolObjPtr pool;
if (entry->d_name[0] == '.')
continue;
if (!virFileStripSuffix(entry->d_name, ".xml"))
continue;
if (!(pool = virStoragePoolLoadState(pools, stateDir, entry->d_name)))
continue;
virStoragePoolObjUnlock(pool);
}
closedir(dir);
return ret;
}
int
virStoragePoolLoadAllConfigs(virStoragePoolObjListPtr pools,
const char *configDir,
const char *autostartDir)
{
DIR *dir;
struct dirent *entry;
int ret;
if (!(dir = opendir(configDir))) {
if (errno == ENOENT)
return 0;
virReportSystemError(errno, _("Failed to open dir '%s'"),
configDir);
return -1;
}
while ((ret = virDirRead(dir, &entry, configDir)) > 0) {
char *path;
char *autostartLink;
virStoragePoolObjPtr pool;
if (entry->d_name[0] == '.')
continue;
if (!virFileHasSuffix(entry->d_name, ".xml"))
continue;
if (!(path = virFileBuildPath(configDir, entry->d_name, NULL)))
continue;
if (!(autostartLink = virFileBuildPath(autostartDir, entry->d_name,
NULL))) {
VIR_FREE(path);
continue;
}
pool = virStoragePoolObjLoad(pools, entry->d_name, path,
autostartLink);
if (pool)
virStoragePoolObjUnlock(pool);
VIR_FREE(path);
VIR_FREE(autostartLink);
}
closedir(dir);
return ret;
}
static int virStoragePoolSaveXML(const char *path,
virStoragePoolDefPtr def,
const char *xml)
{
char uuidstr[VIR_UUID_STRING_BUFLEN];
int ret = -1;
virUUIDFormat(def->uuid, uuidstr);
ret = virXMLSaveFile(path,
virXMLPickShellSafeComment(def->name, uuidstr),
"pool-edit", xml);
return ret;
}
int
virStoragePoolSaveState(const char *stateFile,
virStoragePoolDefPtr def)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
int ret = -1;
char *xml;
virBufferAddLit(&buf, "<poolstate>\n");
virBufferAdjustIndent(&buf, 2);
if (virStoragePoolDefFormatBuf(&buf, def) < 0)
goto error;
virBufferAdjustIndent(&buf, -2);
virBufferAddLit(&buf, "</poolstate>\n");
if (virBufferCheckError(&buf) < 0)
goto error;
if (!(xml = virBufferContentAndReset(&buf)))
goto error;
if (virStoragePoolSaveXML(stateFile, def, xml))
goto error;
ret = 0;
error:
VIR_FREE(xml);
return ret;
}
int
virStoragePoolSaveConfig(const char *configFile,
virStoragePoolDefPtr def)
{
char *xml;
int ret = -1;
if (!(xml = virStoragePoolDefFormat(def))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("failed to generate XML"));
return -1;
}
if (virStoragePoolSaveXML(configFile, def, xml))
goto cleanup;
ret = 0;
cleanup:
VIR_FREE(xml);
return ret;
}
int
virStoragePoolObjSaveDef(virStorageDriverStatePtr driver,
virStoragePoolObjPtr pool,
virStoragePoolDefPtr def)
{
if (!pool->configFile) {
if (virFileMakePath(driver->configDir) < 0) {
virReportSystemError(errno,
_("cannot create config directory %s"),
driver->configDir);
return -1;
}
if (!(pool->configFile = virFileBuildPath(driver->configDir,
def->name, ".xml"))) {
return -1;
}
if (!(pool->autostartLink = virFileBuildPath(driver->autostartDir,
def->name, ".xml"))) {
VIR_FREE(pool->configFile);
return -1;
}
}
return virStoragePoolSaveConfig(pool->configFile, def);
}
int
virStoragePoolObjDeleteDef(virStoragePoolObjPtr pool)
{
if (!pool->configFile) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("no config file for %s"), pool->def->name);
return -1;
}
if (unlink(pool->configFile) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot remove config for %s"),
pool->def->name);
return -1;
}
return 0;
}
virStoragePoolSourcePtr
virStoragePoolSourceListNewSource(virStoragePoolSourceListPtr list)
{
virStoragePoolSourcePtr source;
if (VIR_REALLOC_N(list->sources, list->nsources + 1) < 0)
return NULL;
source = &list->sources[list->nsources++];
memset(source, 0, sizeof(*source));
return source;
}
char *
virStoragePoolSourceListFormat(virStoragePoolSourceListPtr def)
{
virStoragePoolOptionsPtr options;
virBuffer buf = VIR_BUFFER_INITIALIZER;
const char *type;
size_t i;
options = virStoragePoolOptionsForPoolType(def->type);
if (options == NULL)
return NULL;
type = virStoragePoolTypeToString(def->type);
if (!type) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unexpected pool type"));
goto cleanup;
}
virBufferAddLit(&buf, "<sources>\n");
virBufferAdjustIndent(&buf, 2);
for (i = 0; i < def->nsources; i++)
virStoragePoolSourceFormat(&buf, options, &def->sources[i]);
virBufferAdjustIndent(&buf, -2);
virBufferAddLit(&buf, "</sources>\n");
if (virBufferCheckError(&buf) < 0)
goto cleanup;
return virBufferContentAndReset(&buf);
cleanup:
virBufferFreeAndReset(&buf);
return NULL;
}
/*
* virStoragePoolObjIsDuplicate:
* @doms : virStoragePoolObjListPtr to search
* @def : virStoragePoolDefPtr definition of pool to lookup
* @check_active: If true, ensure that pool is not active
*
* Returns: -1 on error
* 0 if pool is new
* 1 if pool is a duplicate
*/
int
virStoragePoolObjIsDuplicate(virStoragePoolObjListPtr pools,
virStoragePoolDefPtr def,
unsigned int check_active)
{
int ret = -1;
virStoragePoolObjPtr pool = NULL;
/* See if a Pool with matching UUID already exists */
pool = virStoragePoolObjFindByUUID(pools, def->uuid);
if (pool) {
/* UUID matches, but if names don't match, refuse it */
if (STRNEQ(pool->def->name, def->name)) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(pool->def->uuid, uuidstr);
virReportError(VIR_ERR_OPERATION_FAILED,
_("pool '%s' is already defined with uuid %s"),
pool->def->name, uuidstr);
goto cleanup;
}
if (check_active) {
/* UUID & name match, but if Pool is already active, refuse it */
if (virStoragePoolObjIsActive(pool)) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("pool is already active as '%s'"),
pool->def->name);
goto cleanup;
}
}
ret = 1;
} else {
/* UUID does not match, but if a name matches, refuse it */
pool = virStoragePoolObjFindByName(pools, def->name);
if (pool) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(pool->def->uuid, uuidstr);
virReportError(VIR_ERR_OPERATION_FAILED,
_("pool '%s' already exists with uuid %s"),
def->name, uuidstr);
goto cleanup;
}
ret = 0;
}
cleanup:
if (pool)
virStoragePoolObjUnlock(pool);
return ret;
}
/*
* virStoragePoolGetVhbaSCSIHostParent:
*
* Using the Node Device Driver, find the host# name found via wwnn/wwpn
* lookup in the fc_host sysfs tree (e.g. virGetFCHostNameByWWN) to get
* the parent 'scsi_host#'.
*
* @conn: Connection pointer (must be non-NULL on entry)
* @name: Pointer a string from a virGetFCHostNameByWWN (e.g., "host#")
*
* Returns a "scsi_host#" string of the parent of the vHBA
*/
char *
virStoragePoolGetVhbaSCSIHostParent(virConnectPtr conn,
const char *name)
{
char *nodedev_name = NULL;
virNodeDevicePtr device = NULL;
char *xml = NULL;
virNodeDeviceDefPtr def = NULL;
char *vhba_parent = NULL;
VIR_DEBUG("conn=%p, name=%s", conn, name);
/* We get passed "host#" from the return from virGetFCHostNameByWWN,
* so we need to adjust that to what the nodedev lookup expects
*/
if (virAsprintf(&nodedev_name, "scsi_%s", name) < 0)
goto cleanup;
/* Compare the scsi_host for the name with the provided parent
* if not the same, then fail
*/
if (!(device = virNodeDeviceLookupByName(conn, nodedev_name))) {
virReportError(VIR_ERR_XML_ERROR,
_("Cannot find '%s' in node device database"),
nodedev_name);
goto cleanup;
}
if (!(xml = virNodeDeviceGetXMLDesc(device, 0)))
goto cleanup;
if (!(def = virNodeDeviceDefParseString(xml, EXISTING_DEVICE, NULL)))
goto cleanup;
/* The caller checks whether the returned value is NULL or not
* before continuing
*/
ignore_value(VIR_STRDUP(vhba_parent, def->parent));
cleanup:
VIR_FREE(nodedev_name);
virNodeDeviceDefFree(def);
VIR_FREE(xml);
virObjectUnref(device);
return vhba_parent;
}
static int
getSCSIHostNumber(virStoragePoolSourceAdapter adapter,
unsigned int *hostnum)
{
int ret = -1;
unsigned int num;
char *name = NULL;
if (adapter.data.scsi_host.has_parent) {
virDevicePCIAddress addr = adapter.data.scsi_host.parentaddr;
unsigned int unique_id = adapter.data.scsi_host.unique_id;
if (!(name = virGetSCSIHostNameByParentaddr(addr.domain,
addr.bus,
addr.slot,
addr.function,
unique_id)))
goto cleanup;
if (virGetSCSIHostNumber(name, &num) < 0)
goto cleanup;
} else {
if (virGetSCSIHostNumber(adapter.data.scsi_host.name, &num) < 0)
goto cleanup;
}
*hostnum = num;
ret = 0;
cleanup:
VIR_FREE(name);
return ret;
}
/*
* matchFCHostToSCSIHost:
*
* @conn: Connection pointer
* @fc_adapter: fc_host adapter (either def or pool->def)
* @scsi_hostnum: Already determined "scsi_pool" hostnum
*
* Returns true/false whether there is a match between the incoming
* fc_adapter host# and the scsi_host host#
*/
static bool
matchFCHostToSCSIHost(virConnectPtr conn,
virStoragePoolSourceAdapter fc_adapter,
unsigned int scsi_hostnum)
{
char *name = NULL;
char *parent_name = NULL;
unsigned int fc_hostnum;
/* If we have a parent defined, get its hostnum, and compare to the
* scsi_hostnum. If they are the same, then we have a match
*/
if (fc_adapter.data.fchost.parent &&
virGetSCSIHostNumber(fc_adapter.data.fchost.parent, &fc_hostnum) == 0 &&
scsi_hostnum == fc_hostnum)
return true;
/* If we find an fc_adapter name, then either libvirt created a vHBA
* for this fc_host or a 'virsh nodedev-create' generated a vHBA.
*/
if ((name = virGetFCHostNameByWWN(NULL, fc_adapter.data.fchost.wwnn,
fc_adapter.data.fchost.wwpn))) {
/* Get the scsi_hostN for the vHBA in order to see if it
* matches our scsi_hostnum
*/
if (virGetSCSIHostNumber(name, &fc_hostnum) == 0 &&
scsi_hostnum == fc_hostnum) {
VIR_FREE(name);
return true;
}
/* We weren't provided a parent, so we have to query the node
* device driver in order to ascertain the parent of the vHBA.
* If the parent fc_hostnum is the same as the scsi_hostnum, we
* have a match.
*/
if (conn && !fc_adapter.data.fchost.parent) {
parent_name = virStoragePoolGetVhbaSCSIHostParent(conn, name);
if (parent_name) {
if (virGetSCSIHostNumber(parent_name, &fc_hostnum) == 0 &&
scsi_hostnum == fc_hostnum) {
VIR_FREE(parent_name);
VIR_FREE(name);
return true;
}
VIR_FREE(parent_name);
} else {
/* Throw away the error and fall through */
virResetLastError();
VIR_DEBUG("Could not determine parent vHBA");
}
}
VIR_FREE(name);
}
/* NB: Lack of a name means that this vHBA hasn't yet been created,
* which means our scsi_host cannot be using the vHBA. Furthermore,
* lack of a provided parent means libvirt is going to choose the
* "best" fc_host capable adapter based on availabilty. That could
* conflict with an existing scsi_host definition, but there's no
* way to know that now.
*/
return false;
}
static bool
matchSCSIAdapterParent(virStoragePoolObjPtr pool,
virStoragePoolDefPtr def)
{
virDevicePCIAddressPtr pooladdr =
&pool->def->source.adapter.data.scsi_host.parentaddr;
virDevicePCIAddressPtr defaddr =
&def->source.adapter.data.scsi_host.parentaddr;
int pool_unique_id =
pool->def->source.adapter.data.scsi_host.unique_id;
int def_unique_id =
def->source.adapter.data.scsi_host.unique_id;
if (pooladdr->domain == defaddr->domain &&
pooladdr->bus == defaddr->bus &&
pooladdr->slot == defaddr->slot &&
pooladdr->function == defaddr->function &&
pool_unique_id == def_unique_id) {
return true;
}
return false;
}
static bool
virStoragePoolSourceMatchSingleHost(virStoragePoolSourcePtr poolsrc,
virStoragePoolSourcePtr defsrc)
{
if (poolsrc->nhost != 1 && defsrc->nhost != 1)
return false;
if (defsrc->hosts[0].port &&
poolsrc->hosts[0].port != defsrc->hosts[0].port)
return false;
return STREQ(poolsrc->hosts[0].name, defsrc->hosts[0].name);
}
static bool
virStoragePoolSourceISCSIMatch(virStoragePoolObjPtr matchpool,
virStoragePoolDefPtr def)
{
virStoragePoolSourcePtr poolsrc = &matchpool->def->source;
virStoragePoolSourcePtr defsrc = &def->source;
/* NB: Do not check the source host name */
if (STRNEQ_NULLABLE(poolsrc->initiator.iqn, defsrc->initiator.iqn))
return false;
return true;
}
int
virStoragePoolSourceFindDuplicate(virConnectPtr conn,
virStoragePoolObjListPtr pools,
virStoragePoolDefPtr def)
{
size_t i;
int ret = 1;
virStoragePoolObjPtr pool = NULL;
virStoragePoolObjPtr matchpool = NULL;
/* Check the pool list for duplicate underlying storage */
for (i = 0; i < pools->count; i++) {
pool = pools->objs[i];
if (def->type != pool->def->type)
continue;
/* Don't mach against ourself if re-defining existing pool ! */
if (STREQ(pool->def->name, def->name))
continue;
virStoragePoolObjLock(pool);
switch ((virStoragePoolType)pool->def->type) {
case VIR_STORAGE_POOL_DIR:
if (STREQ(pool->def->target.path, def->target.path))
matchpool = pool;
break;
case VIR_STORAGE_POOL_GLUSTER:
if (STREQ(pool->def->source.name, def->source.name) &&
STREQ_NULLABLE(pool->def->source.dir, def->source.dir) &&
virStoragePoolSourceMatchSingleHost(&pool->def->source,
&def->source))
matchpool = pool;
break;
case VIR_STORAGE_POOL_NETFS:
if (STREQ(pool->def->source.dir, def->source.dir) &&
virStoragePoolSourceMatchSingleHost(&pool->def->source,
&def->source))
matchpool = pool;
break;
case VIR_STORAGE_POOL_SCSI:
if (pool->def->source.adapter.type ==
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST &&
def->source.adapter.type ==
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST) {
if (STREQ(pool->def->source.adapter.data.fchost.wwnn,
def->source.adapter.data.fchost.wwnn) &&
STREQ(pool->def->source.adapter.data.fchost.wwpn,
def->source.adapter.data.fchost.wwpn))
matchpool = pool;
} else if (pool->def->source.adapter.type ==
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_SCSI_HOST &&
def->source.adapter.type ==
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_SCSI_HOST) {
unsigned int pool_hostnum, def_hostnum;
if (pool->def->source.adapter.data.scsi_host.has_parent &&
def->source.adapter.data.scsi_host.has_parent &&
matchSCSIAdapterParent(pool, def)) {
matchpool = pool;
break;
}
if (getSCSIHostNumber(pool->def->source.adapter,
&pool_hostnum) < 0 ||
getSCSIHostNumber(def->source.adapter, &def_hostnum) < 0)
break;
if (pool_hostnum == def_hostnum)
matchpool = pool;
} else if (pool->def->source.adapter.type ==
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST &&
def->source.adapter.type ==
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_SCSI_HOST) {
unsigned int scsi_hostnum;
/* Get the scsi_hostN for the scsi_host source adapter def */
if (getSCSIHostNumber(def->source.adapter,
&scsi_hostnum) < 0)
break;
if (matchFCHostToSCSIHost(conn, pool->def->source.adapter,
scsi_hostnum)) {
matchpool = pool;
break;
}
} else if (pool->def->source.adapter.type ==
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_SCSI_HOST &&
def->source.adapter.type ==
VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST) {
unsigned int scsi_hostnum;
if (getSCSIHostNumber(pool->def->source.adapter,
&scsi_hostnum) < 0)
break;
if (matchFCHostToSCSIHost(conn, def->source.adapter,
scsi_hostnum)) {
matchpool = pool;
break;
}
}
break;
case VIR_STORAGE_POOL_ISCSI:
matchpool = virStoragePoolSourceFindDuplicateDevices(pool, def);
if (matchpool) {
if (!virStoragePoolSourceISCSIMatch(matchpool, def))
matchpool = NULL;
}
break;
case VIR_STORAGE_POOL_FS:
case VIR_STORAGE_POOL_LOGICAL:
case VIR_STORAGE_POOL_DISK:
case VIR_STORAGE_POOL_ZFS:
matchpool = virStoragePoolSourceFindDuplicateDevices(pool, def);
break;
case VIR_STORAGE_POOL_SHEEPDOG:
if (virStoragePoolSourceMatchSingleHost(&pool->def->source,
&def->source))
matchpool = pool;
break;
case VIR_STORAGE_POOL_MPATH:
/* Only one mpath pool is valid per host */
matchpool = pool;
break;
case VIR_STORAGE_POOL_RBD:
case VIR_STORAGE_POOL_LAST:
break;
}
virStoragePoolObjUnlock(pool);
if (matchpool)
break;
}
if (matchpool) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("Storage source conflict with pool: '%s'"),
matchpool->def->name);
ret = -1;
}
return ret;
}
void
virStoragePoolObjLock(virStoragePoolObjPtr obj)
{
virMutexLock(&obj->lock);
}
void
virStoragePoolObjUnlock(virStoragePoolObjPtr obj)
{
virMutexUnlock(&obj->lock);
}
#define MATCH(FLAG) (flags & (FLAG))
static bool
virStoragePoolMatch(virStoragePoolObjPtr poolobj,
unsigned int flags)
{
/* filter by active state */
if (MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_FILTERS_ACTIVE) &&
!((MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_ACTIVE) &&
virStoragePoolObjIsActive(poolobj)) ||
(MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_INACTIVE) &&
!virStoragePoolObjIsActive(poolobj))))
return false;
/* filter by persistence */
if (MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_FILTERS_PERSISTENT) &&
!((MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_PERSISTENT) &&
poolobj->configFile) ||
(MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_TRANSIENT) &&
!poolobj->configFile)))
return false;
/* filter by autostart option */
if (MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_FILTERS_AUTOSTART) &&
!((MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_AUTOSTART) &&
poolobj->autostart) ||
(MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_NO_AUTOSTART) &&
!poolobj->autostart)))
return false;
/* filter by pool type */
if (MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_FILTERS_POOL_TYPE)) {
if (!((MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_DIR) &&
(poolobj->def->type == VIR_STORAGE_POOL_DIR)) ||
(MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_FS) &&
(poolobj->def->type == VIR_STORAGE_POOL_FS)) ||
(MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_NETFS) &&
(poolobj->def->type == VIR_STORAGE_POOL_NETFS)) ||
(MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_LOGICAL) &&
(poolobj->def->type == VIR_STORAGE_POOL_LOGICAL)) ||
(MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_DISK) &&
(poolobj->def->type == VIR_STORAGE_POOL_DISK)) ||
(MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_ISCSI) &&
(poolobj->def->type == VIR_STORAGE_POOL_ISCSI)) ||
(MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_SCSI) &&
(poolobj->def->type == VIR_STORAGE_POOL_SCSI)) ||
(MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_MPATH) &&
(poolobj->def->type == VIR_STORAGE_POOL_MPATH)) ||
(MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_RBD) &&
(poolobj->def->type == VIR_STORAGE_POOL_RBD)) ||
(MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_SHEEPDOG) &&
(poolobj->def->type == VIR_STORAGE_POOL_SHEEPDOG)) ||
(MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_GLUSTER) &&
(poolobj->def->type == VIR_STORAGE_POOL_GLUSTER))))
return false;
}
return true;
}
#undef MATCH
int
virStoragePoolObjListExport(virConnectPtr conn,
virStoragePoolObjList poolobjs,
virStoragePoolPtr **pools,
virStoragePoolObjListFilter filter,
unsigned int flags)
{
virStoragePoolPtr *tmp_pools = NULL;
virStoragePoolPtr pool = NULL;
int npools = 0;
int ret = -1;
size_t i;
if (pools && VIR_ALLOC_N(tmp_pools, poolobjs.count + 1) < 0)
goto cleanup;
for (i = 0; i < poolobjs.count; i++) {
virStoragePoolObjPtr poolobj = poolobjs.objs[i];
virStoragePoolObjLock(poolobj);
if ((!filter || filter(conn, poolobj->def)) &&
virStoragePoolMatch(poolobj, flags)) {
if (pools) {
if (!(pool = virGetStoragePool(conn,
poolobj->def->name,
poolobj->def->uuid,
NULL, NULL))) {
virStoragePoolObjUnlock(poolobj);
goto cleanup;
}
tmp_pools[npools] = pool;
}
npools++;
}
virStoragePoolObjUnlock(poolobj);
}
if (tmp_pools) {
/* trim the array to the final size */
ignore_value(VIR_REALLOC_N(tmp_pools, npools + 1));
*pools = tmp_pools;
tmp_pools = NULL;
}
ret = npools;
cleanup:
if (tmp_pools) {
for (i = 0; i < npools; i++)
virObjectUnref(tmp_pools[i]);
}
VIR_FREE(tmp_pools);
return ret;
}
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