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backup: Parse and output checkpoint XML

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Add a new file checkpoint_conf.c that performs the translation to and
from new XML describing a checkpoint. The code shares a common base
class with snapshots, since a checkpoint similarly represents the
domain state at a moment in time. Add some basic testing of round trip
XML handling through the new code.

Of note - this code intentionally differs from snapshots in that XML
schema validation is unconditional, rather than based on a public API
flag.  We have many existing interfaces that still need to add a flag
for opt-in schema validation, but those interfaces have existing
clients that may not have been producing strictly-compliant XML, or we
may still uncover bugs where our RNG grammar is inconsistent with our
code (where omitting the opt-in flag allows existing apps to keep
working while waiting for an RNG patch).  But since checkpoints are
brand-new, it's easier to ensure the code matches the schema by always
using the schema.  If needed, a later patch could extend the API and
add a flag to turn on to request schema validation, rather than having
it forced (possibly just the validation of the <domain> sub-element
during REDEFINE) - but if a user encounters XML that looks like it
should be good but fails to validate with our RNG schema, they would
either have to upgrade to a new libvirt that adds the new flag, or
upgrade to a new libvirt that fixes the RNG schema, which implies
adding such a flag won't help much.

Also, the redefine flag requires the <domain> sub-element to be
present, rather than catering to historical back-compat to older
versions.

Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Eric Blake 2018-07-07 21:01:14 -05:00
parent 9943c42a22
commit 1a4df34a0f
10 changed files with 969 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
po/POTFILES
View File

@ -15,6 +15,7 @@ src/bhyve/bhyve_monitor.c
src/bhyve/bhyve_parse_command.c
src/bhyve/bhyve_process.c
src/conf/capabilities.c
src/conf/checkpoint_conf.c
src/conf/cpu_conf.c
src/conf/device_conf.c
src/conf/domain_addr.c

2
src/conf/Makefile.inc.am
View File

@ -14,6 +14,8 @@ NETDEV_CONF_SOURCES = \
DOMAIN_CONF_SOURCES = \
conf/capabilities.c \
conf/capabilities.h \
conf/checkpoint_conf.c \
conf/checkpoint_conf.h \
conf/domain_addr.c \
conf/domain_addr.h \
conf/domain_capabilities.c \

535
src/conf/checkpoint_conf.c Normal file
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@ -0,0 +1,535 @@
/*
* checkpoint_conf.c: domain checkpoint XML processing
*
* Copyright (C) 2006-2019 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/>.
*/
#include <config.h>
#include "configmake.h"
#include "internal.h"
#include "virbitmap.h"
#include "virbuffer.h"
#include "datatypes.h"
#include "domain_conf.h"
#include "virlog.h"
#include "viralloc.h"
#include "checkpoint_conf.h"
#include "virstoragefile.h"
#include "viruuid.h"
#include "virfile.h"
#include "virerror.h"
#include "virxml.h"
#include "virstring.h"
#define VIR_FROM_THIS VIR_FROM_DOMAIN_CHECKPOINT
VIR_LOG_INIT("conf.checkpoint_conf");
static virClassPtr virDomainCheckpointDefClass;
static void virDomainCheckpointDefDispose(void *obj);
static int
virDomainCheckpointOnceInit(void)
{
if (!VIR_CLASS_NEW(virDomainCheckpointDef, virClassForDomainMomentDef()))
return -1;
return 0;
}
VIR_ONCE_GLOBAL_INIT(virDomainCheckpoint);
VIR_ENUM_IMPL(virDomainCheckpoint,
VIR_DOMAIN_CHECKPOINT_TYPE_LAST,
"default", "no", "bitmap");
/* Checkpoint Def functions */
static void
virDomainCheckpointDiskDefClear(virDomainCheckpointDiskDefPtr disk)
{
VIR_FREE(disk->name);
VIR_FREE(disk->bitmap);
}
/* Allocate a new virDomainCheckpointDef; free with virObjectUnref() */
virDomainCheckpointDefPtr
virDomainCheckpointDefNew(void)
{
virDomainCheckpointDefPtr def;
if (virDomainCheckpointInitialize() < 0)
return NULL;
def = virObjectNew(virDomainCheckpointDefClass);
return def;
}
static void
virDomainCheckpointDefDispose(void *obj)
{
virDomainCheckpointDefPtr def = obj;
size_t i;
for (i = 0; i < def->ndisks; i++)
virDomainCheckpointDiskDefClear(&def->disks[i]);
VIR_FREE(def->disks);
}
static int
virDomainCheckpointDiskDefParseXML(xmlNodePtr node,
xmlXPathContextPtr ctxt,
virDomainCheckpointDiskDefPtr def)
{
VIR_AUTOFREE(char *) checkpoint = NULL;
VIR_XPATH_NODE_AUTORESTORE(ctxt);
ctxt->node = node;
/* Schema guarantees this is non-NULL: */
def->name = virXMLPropString(node, "name");
checkpoint = virXMLPropString(node, "checkpoint");
if (checkpoint)
/* Schema guarantees this is in range: */
def->type = virDomainCheckpointTypeFromString(checkpoint);
else
def->type = VIR_DOMAIN_CHECKPOINT_TYPE_BITMAP;
def->bitmap = virXMLPropString(node, "bitmap");
return 0;
}
/* flags is bitwise-or of virDomainCheckpointParseFlags. If flags
* does not include VIR_DOMAIN_CHECKPOINT_PARSE_REDEFINE, then caps
* is ignored.
*/
static virDomainCheckpointDefPtr
virDomainCheckpointDefParse(xmlXPathContextPtr ctxt,
virCapsPtr caps,
virDomainXMLOptionPtr xmlopt,
unsigned int flags)
{
virDomainCheckpointDefPtr ret = NULL;
size_t i;
int n;
char *tmp;
VIR_AUTOFREE(xmlNodePtr *) nodes = NULL;
VIR_AUTOFREE(char *)creation = NULL;
VIR_AUTOUNREF(virDomainCheckpointDefPtr) def = NULL;
if (!(def = virDomainCheckpointDefNew()))
return NULL;
def->parent.name = virXPathString("string(./name)", ctxt);
if (def->parent.name == NULL) {
if (flags & VIR_DOMAIN_CHECKPOINT_PARSE_REDEFINE) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("a redefined checkpoint must have a name"));
return NULL;
}
}
def->parent.description = virXPathString("string(./description)", ctxt);
if (flags & VIR_DOMAIN_CHECKPOINT_PARSE_REDEFINE) {
if (virXPathLongLong("string(./creationTime)", ctxt,
&def->parent.creationTime) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing creationTime from existing checkpoint"));
return NULL;
}
def->parent.parent_name = virXPathString("string(./parent/name)", ctxt);
if ((tmp = virXPathString("string(./domain/@type)", ctxt))) {
int domainflags = VIR_DOMAIN_DEF_PARSE_INACTIVE |
VIR_DOMAIN_DEF_PARSE_SKIP_VALIDATE;
xmlNodePtr domainNode = virXPathNode("./domain", ctxt);
VIR_FREE(tmp);
if (!domainNode) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing domain in checkpoint"));
return NULL;
}
def->parent.dom = virDomainDefParseNode(ctxt->node->doc, domainNode,
caps, xmlopt, NULL,
domainflags);
if (!def->parent.dom)
return NULL;
} else {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing domain in checkpoint redefine"));
return NULL;
}
} else if (virDomainXMLOptionRunMomentPostParse(xmlopt, &def->parent) < 0) {
return NULL;
}
if ((n = virXPathNodeSet("./disks/*", ctxt, &nodes)) < 0)
return NULL;
if (n && VIR_ALLOC_N(def->disks, n) < 0)
return NULL;
def->ndisks = n;
for (i = 0; i < def->ndisks; i++) {
if (virDomainCheckpointDiskDefParseXML(nodes[i], ctxt,
&def->disks[i]) < 0)
return NULL;
}
VIR_STEAL_PTR(ret, def);
return ret;
}
static virDomainCheckpointDefPtr
virDomainCheckpointDefParseNode(xmlDocPtr xml,
xmlNodePtr root,
virCapsPtr caps,
virDomainXMLOptionPtr xmlopt,
unsigned int flags)
{
xmlXPathContextPtr ctxt = NULL;
virDomainCheckpointDefPtr def = NULL;
VIR_AUTOFREE(char *) schema = NULL;
if (!virXMLNodeNameEqual(root, "domaincheckpoint")) {
virReportError(VIR_ERR_XML_ERROR, "%s", _("domaincheckpoint"));
goto cleanup;
}
/* This is a new enough API to make schema validation unconditional */
schema = virFileFindResource("domaincheckpoint.rng",
abs_top_srcdir "/docs/schemas",
PKGDATADIR "/schemas");
if (!schema)
return NULL;
if (virXMLValidateAgainstSchema(schema, xml) < 0)
return NULL;
ctxt = xmlXPathNewContext(xml);
if (ctxt == NULL) {
virReportOOMError();
goto cleanup;
}
ctxt->node = root;
def = virDomainCheckpointDefParse(ctxt, caps, xmlopt, flags);
cleanup:
xmlXPathFreeContext(ctxt);
return def;
}
virDomainCheckpointDefPtr
virDomainCheckpointDefParseString(const char *xmlStr,
virCapsPtr caps,
virDomainXMLOptionPtr xmlopt,
unsigned int flags)
{
virDomainCheckpointDefPtr ret = NULL;
xmlDocPtr xml;
int keepBlanksDefault = xmlKeepBlanksDefault(0);
if ((xml = virXMLParse(NULL, xmlStr, _("(domain_checkpoint)")))) {
xmlKeepBlanksDefault(keepBlanksDefault);
ret = virDomainCheckpointDefParseNode(xml, xmlDocGetRootElement(xml),
caps, xmlopt, flags);
xmlFreeDoc(xml);
}
xmlKeepBlanksDefault(keepBlanksDefault);
return ret;
}
/**
* virDomainCheckpointDefAssignBitmapNames:
* @def: checkpoint def object
*
* Generate default bitmap names for checkpoint targets. Returns 0 on
* success, -1 on error.
*/
static int
virDomainCheckpointDefAssignBitmapNames(virDomainCheckpointDefPtr def)
{
size_t i;
for (i = 0; i < def->ndisks; i++) {
virDomainCheckpointDiskDefPtr disk = &def->disks[i];
if (disk->type != VIR_DOMAIN_CHECKPOINT_TYPE_BITMAP ||
disk->bitmap)
continue;
if (VIR_STRDUP(disk->bitmap, def->parent.name) < 0)
return -1;
}
return 0;
}
static int
virDomainCheckpointCompareDiskIndex(const void *a, const void *b)
{
const virDomainCheckpointDiskDef *diska = a;
const virDomainCheckpointDiskDef *diskb = b;
/* Integer overflow shouldn't be a problem here. */
return diska->idx - diskb->idx;
}
/* Align def->disks to def->domain. Sort the list of def->disks,
* filling in any missing disks with appropriate default. Convert
* paths to disk targets for uniformity. Issue an error and return -1
* if any def->disks[n]->name appears more than once or does not map
* to dom->disks. */
int
virDomainCheckpointAlignDisks(virDomainCheckpointDefPtr def)
{
int ret = -1;
virBitmapPtr map = NULL;
size_t i;
int ndisks;
int checkpoint_default = VIR_DOMAIN_CHECKPOINT_TYPE_NONE;
if (!def->parent.dom) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing domain in checkpoint"));
goto cleanup;
}
if (def->ndisks > def->parent.dom->ndisks) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("too many disk checkpoint requests for domain"));
goto cleanup;
}
/* Unlikely to have a guest without disks but technically possible. */
if (!def->parent.dom->ndisks) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("domain must have at least one disk to perform "
"checkpoints"));
goto cleanup;
}
/* If <disks> omitted, do bitmap on all writeable disks;
* otherwise, do nothing for omitted disks */
if (!def->ndisks)
checkpoint_default = VIR_DOMAIN_CHECKPOINT_TYPE_BITMAP;
if (!(map = virBitmapNew(def->parent.dom->ndisks)))
goto cleanup;
/* Double check requested disks. */
for (i = 0; i < def->ndisks; i++) {
virDomainCheckpointDiskDefPtr disk = &def->disks[i];
int idx = virDomainDiskIndexByName(def->parent.dom, disk->name, false);
if (idx < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("no disk named '%s'"), disk->name);
goto cleanup;
}
if (virBitmapIsBitSet(map, idx)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("disk '%s' specified twice"),
disk->name);
goto cleanup;
}
if ((virStorageSourceIsEmpty(def->parent.dom->disks[idx]->src) ||
def->parent.dom->disks[idx]->src->readonly) &&
disk->type != VIR_DOMAIN_CHECKPOINT_TYPE_NONE) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("disk '%s' is empty or readonly"),
disk->name);
goto cleanup;
}
ignore_value(virBitmapSetBit(map, idx));
disk->idx = idx;
if (STRNEQ(disk->name, def->parent.dom->disks[idx]->dst)) {
VIR_FREE(disk->name);
if (VIR_STRDUP(disk->name, def->parent.dom->disks[idx]->dst) < 0)
goto cleanup;
}
}
/* Provide defaults for all remaining disks. */
ndisks = def->ndisks;
if (VIR_EXPAND_N(def->disks, def->ndisks,
def->parent.dom->ndisks - def->ndisks) < 0)
goto cleanup;
for (i = 0; i < def->parent.dom->ndisks; i++) {
virDomainCheckpointDiskDefPtr disk;
if (virBitmapIsBitSet(map, i))
continue;
disk = &def->disks[ndisks++];
if (VIR_STRDUP(disk->name, def->parent.dom->disks[i]->dst) < 0)
goto cleanup;
disk->idx = i;
/* Don't checkpoint empty or readonly drives */
if (virStorageSourceIsEmpty(def->parent.dom->disks[i]->src) ||
def->parent.dom->disks[i]->src->readonly)
disk->type = VIR_DOMAIN_CHECKPOINT_TYPE_NONE;
else
disk->type = checkpoint_default;
}
qsort(&def->disks[0], def->ndisks, sizeof(def->disks[0]),
virDomainCheckpointCompareDiskIndex);
/* Generate default bitmap names for checkpoint */
if (virDomainCheckpointDefAssignBitmapNames(def) < 0)
goto cleanup;
ret = 0;
cleanup:
virBitmapFree(map);
return ret;
}
/* Converts public VIR_DOMAIN_CHECKPOINT_XML_* into
* VIR_DOMAIN_CHECKPOINT_FORMAT_* flags, and silently ignores any other
* flags. */
unsigned int virDomainCheckpointFormatConvertXMLFlags(unsigned int flags)
{
unsigned int formatFlags = 0;
if (flags & VIR_DOMAIN_CHECKPOINT_XML_SECURE)
formatFlags |= VIR_DOMAIN_CHECKPOINT_FORMAT_SECURE;
if (flags & VIR_DOMAIN_CHECKPOINT_XML_NO_DOMAIN)
formatFlags |= VIR_DOMAIN_CHECKPOINT_FORMAT_NO_DOMAIN;
if (flags & VIR_DOMAIN_CHECKPOINT_XML_SIZE)
formatFlags |= VIR_DOMAIN_CHECKPOINT_FORMAT_SIZE;
return formatFlags;
}
static int
virDomainCheckpointDiskDefFormat(virBufferPtr buf,
virDomainCheckpointDiskDefPtr disk,
unsigned int flags)
{
if (!disk->name)
return 0;
virBufferEscapeString(buf, "<disk name='%s'", disk->name);
if (disk->type)
virBufferAsprintf(buf, " checkpoint='%s'",
virDomainCheckpointTypeToString(disk->type));
if (disk->bitmap) {
virBufferEscapeString(buf, " bitmap='%s'", disk->bitmap);
if (flags & VIR_DOMAIN_CHECKPOINT_FORMAT_SIZE)
virBufferAsprintf(buf, " size='%llu'", disk->size);
}
virBufferAddLit(buf, "/>\n");
return 0;
}
static int
virDomainCheckpointDefFormatInternal(virBufferPtr buf,
virDomainCheckpointDefPtr def,
virCapsPtr caps,
virDomainXMLOptionPtr xmlopt,
unsigned int flags)
{
size_t i;
unsigned int domainflags = VIR_DOMAIN_DEF_FORMAT_INACTIVE;
if (flags & VIR_DOMAIN_CHECKPOINT_FORMAT_SECURE)
domainflags |= VIR_DOMAIN_DEF_FORMAT_SECURE;
virBufferAddLit(buf, "<domaincheckpoint>\n");
virBufferAdjustIndent(buf, 2);
virBufferEscapeString(buf, "<name>%s</name>\n", def->parent.name);
virBufferEscapeString(buf, "<description>%s</description>\n",
def->parent.description);
if (def->parent.parent_name) {
virBufferAddLit(buf, "<parent>\n");
virBufferAdjustIndent(buf, 2);
virBufferEscapeString(buf, "<name>%s</name>\n",
def->parent.parent_name);
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</parent>\n");
}
if (def->parent.creationTime)
virBufferAsprintf(buf, "<creationTime>%lld</creationTime>\n",
def->parent.creationTime);
if (def->ndisks) {
virBufferAddLit(buf, "<disks>\n");
virBufferAdjustIndent(buf, 2);
for (i = 0; i < def->ndisks; i++) {
if (virDomainCheckpointDiskDefFormat(buf, &def->disks[i],
flags) < 0)
goto error;
}
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</disks>\n");
}
if (!(flags & VIR_DOMAIN_CHECKPOINT_FORMAT_NO_DOMAIN) &&
virDomainDefFormatInternal(def->parent.dom, caps, domainflags, buf,
xmlopt) < 0)
goto error;
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</domaincheckpoint>\n");
if (virBufferCheckError(buf) < 0)
goto error;
return 0;
error:
virBufferFreeAndReset(buf);
return -1;
}
char *
virDomainCheckpointDefFormat(virDomainCheckpointDefPtr def,
virCapsPtr caps,
virDomainXMLOptionPtr xmlopt,
unsigned int flags)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
virCheckFlags(VIR_DOMAIN_CHECKPOINT_FORMAT_SECURE |
VIR_DOMAIN_CHECKPOINT_FORMAT_NO_DOMAIN |
VIR_DOMAIN_CHECKPOINT_FORMAT_SIZE, NULL);
if (virDomainCheckpointDefFormatInternal(&buf, def, caps, xmlopt,
flags) < 0)
return NULL;
return virBufferContentAndReset(&buf);
}

92
src/conf/checkpoint_conf.h Normal file
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@ -0,0 +1,92 @@
/*
* checkpoint_conf.h: domain checkpoint XML processing
* (based on snapshot_conf.h)
*
* Copyright (C) 2006-2019 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/>.
*/
#pragma once
#include "internal.h"
#include "domain_conf.h"
#include "moment_conf.h"
#include "virobject.h"
/* Items related to checkpoint state */
typedef enum {
VIR_DOMAIN_CHECKPOINT_TYPE_DEFAULT = 0,
VIR_DOMAIN_CHECKPOINT_TYPE_NONE,
VIR_DOMAIN_CHECKPOINT_TYPE_BITMAP,
VIR_DOMAIN_CHECKPOINT_TYPE_LAST
} virDomainCheckpointType;
/* Stores disk-checkpoint information */
typedef struct _virDomainCheckpointDiskDef virDomainCheckpointDiskDef;
typedef virDomainCheckpointDiskDef *virDomainCheckpointDiskDefPtr;
struct _virDomainCheckpointDiskDef {
char *name; /* name matching the <target dev='...' of the domain */
int idx; /* index within checkpoint->dom->disks that matches name */
int type; /* virDomainCheckpointType */
char *bitmap; /* bitmap name, if type is bitmap */
unsigned long long size; /* current checkpoint size in bytes */
};
/* Stores the complete checkpoint metadata */
struct _virDomainCheckpointDef {
virDomainMomentDef parent;
/* Additional Public XML. */
size_t ndisks; /* should not exceed dom->ndisks */
virDomainCheckpointDiskDef *disks;
};
typedef enum {
VIR_DOMAIN_CHECKPOINT_PARSE_REDEFINE = 1 << 0,
} virDomainCheckpointParseFlags;
typedef enum {
VIR_DOMAIN_CHECKPOINT_FORMAT_SECURE = 1 << 0,
VIR_DOMAIN_CHECKPOINT_FORMAT_NO_DOMAIN = 1 << 1,
VIR_DOMAIN_CHECKPOINT_FORMAT_SIZE = 1 << 2,
} virDomainCheckpointFormatFlags;
unsigned int
virDomainCheckpointFormatConvertXMLFlags(unsigned int flags);
virDomainCheckpointDefPtr
virDomainCheckpointDefParseString(const char *xmlStr,
virCapsPtr caps,
virDomainXMLOptionPtr xmlopt,
unsigned int flags);
virDomainCheckpointDefPtr
virDomainCheckpointDefNew(void);
char *
virDomainCheckpointDefFormat(virDomainCheckpointDefPtr def,
virCapsPtr caps,
virDomainXMLOptionPtr xmlopt,
unsigned int flags);
int
virDomainCheckpointAlignDisks(virDomainCheckpointDefPtr checkpoint);
VIR_ENUM_DECL(virDomainCheckpoint);

3
src/conf/virconftypes.h
View File

@ -102,6 +102,9 @@ typedef virDomainBlkiotune *virDomainBlkiotunePtr;
typedef struct _virDomainBlockIoTuneInfo virDomainBlockIoTuneInfo;
typedef virDomainBlockIoTuneInfo *virDomainBlockIoTuneInfoPtr;
typedef struct _virDomainCheckpointDef virDomainCheckpointDef;
typedef virDomainCheckpointDef *virDomainCheckpointDefPtr;
typedef struct _virDomainChrDef virDomainChrDef;
typedef virDomainChrDef *virDomainChrDefPtr;

10
src/libvirt_private.syms
View File

@ -69,6 +69,16 @@ virCapabilitiesSetHostCPU;
virCapabilitiesSetNetPrefix;
# conf/checkpoint_conf.h
virDomainCheckpointAlignDisks;
virDomainCheckpointDefFormat;
virDomainCheckpointDefNew;
virDomainCheckpointDefParseString;
virDomainCheckpointFormatConvertXMLFlags;
virDomainCheckpointTypeFromString;
virDomainCheckpointTypeToString;
# conf/cpu_conf.h
virCPUCacheModeTypeFromString;
virCPUCacheModeTypeToString;

9
tests/Makefile.am
View File

@ -276,7 +276,7 @@ endif WITH_LIBXL
if WITH_QEMU
test_programs += qemuxml2argvtest qemuxml2xmltest \
qemudomainsnapshotxml2xmltest \
qemudomaincheckpointxml2xmltest qemudomainsnapshotxml2xmltest \
qemumonitorjsontest qemuhotplugtest \
qemuagenttest qemucapabilitiestest qemucaps2xmltest \
qemumemlocktest \
@ -647,6 +647,11 @@ qemublocktest_LDADD = \
$(qemu_LDADDS) \
$(NULL)
qemudomaincheckpointxml2xmltest_SOURCES = \
qemudomaincheckpointxml2xmltest.c testutilsqemu.c testutilsqemu.h \
testutils.c testutils.h
qemudomaincheckpointxml2xmltest_LDADD = $(qemu_LDADDS)
qemudomainsnapshotxml2xmltest_SOURCES = \
qemudomainsnapshotxml2xmltest.c testutilsqemu.c testutilsqemu.h \
testutils.c testutils.h
@ -682,7 +687,7 @@ qemufirmwaretest_LDADD = $(qemu_LDADDS)
else ! WITH_QEMU
EXTRA_DIST += qemuxml2argvtest.c qemuxml2xmltest.c \
qemudomainsnapshotxml2xmltest.c \
qemudomaincheckpointxml2xmltest.c qemudomainsnapshotxml2xmltest.c \
testutilsqemu.c testutilsqemu.h \
testutilsqemuschema.c testutilsqemuschema.h \
qemumonitorjsontest.c qemuhotplugtest.c \

53
tests/qemudomaincheckpointxml2xmlout/internal-active-invalid.xml Normal file
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@ -0,0 +1,53 @@
<domaincheckpoint>
<name>1525889631</name>
<description>Completion of updates after OS install</description>
<parent>
<name>1525111885</name>
</parent>
<creationTime>1525889631</creationTime>
<disks>
<disk name='vda' checkpoint='bitmap' bitmap='1525889631'/>
<disk name='vdb' checkpoint='no'/>
</disks>
<domain type='qemu'>
<name>QEMUGuest1</name>
<uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
<memory unit='KiB'>219136</memory>
<currentMemory unit='KiB'>219136</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='i686' machine='pc'>hvm</type>
<boot dev='hd'/>
</os>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/bin/qemu-system-i686</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/tmp/data.img'/>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/tmp/logs.img'/>
<target dev='vdb' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</disk>
<controller type='usb' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<controller type='pci' index='0' model='pci-root'/>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<memballoon model='none'/>
</devices>
</domain>
<active>1</active>
</domaincheckpoint>

53
tests/qemudomaincheckpointxml2xmlout/internal-inactive-invalid.xml Normal file
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@ -0,0 +1,53 @@
<domaincheckpoint>
<name>1525889631</name>
<description>Completion of updates after OS install</description>
<parent>
<name>1525111885</name>
</parent>
<creationTime>1525889631</creationTime>
<disks>
<disk name='vda' checkpoint='bitmap' bitmap='1525889631'/>
<disk name='vdb' checkpoint='no'/>
</disks>
<domain type='qemu'>
<name>QEMUGuest1</name>
<uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
<memory unit='KiB'>219136</memory>
<currentMemory unit='KiB'>219136</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='i686' machine='pc'>hvm</type>
<boot dev='hd'/>
</os>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/bin/qemu-system-i686</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/tmp/data.img'/>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/tmp/logs.img'/>
<target dev='vdb' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</disk>
<controller type='usb' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<controller type='pci' index='0' model='pci-root'/>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<memballoon model='none'/>
</devices>
</domain>
<active>0</active>
</domaincheckpoint>

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tests/qemudomaincheckpointxml2xmltest.c Normal file
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#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
#include "testutils.h"
#ifdef WITH_QEMU
# include "internal.h"
# include "qemu/qemu_conf.h"
# include "qemu/qemu_domain.h"
# include "checkpoint_conf.h"
# include "testutilsqemu.h"
# include "virstring.h"
# define VIR_FROM_THIS VIR_FROM_NONE
static virQEMUDriver driver;
enum {
TEST_REDEFINE = 1 << 0, /* Test use of REDEFINE parse flag */
TEST_PARENT = 1 << 1, /* hard-code parent after parse */
TEST_VDA_BITMAP = 1 << 2, /* hard-code disk vda after parse */
TEST_SIZE = 1 << 3, /* Test use of SIZE format flag */
TEST_INVALID = 1 << 4, /* Test that input fails parse */
};
static int
testCompareXMLToXMLFiles(const char *inxml,
const char *outxml,
unsigned int flags)
{
unsigned int parseflags = 0;
unsigned int formatflags = VIR_DOMAIN_CHECKPOINT_FORMAT_SECURE;
VIR_AUTOFREE(char *) inXmlData = NULL;
VIR_AUTOFREE(char *) outXmlData = NULL;
VIR_AUTOFREE(char *) actual = NULL;
VIR_AUTOUNREF(virDomainCheckpointDefPtr) def = NULL;
if (flags & TEST_REDEFINE)
parseflags |= VIR_DOMAIN_CHECKPOINT_PARSE_REDEFINE;
if (virTestLoadFile(inxml, &inXmlData) < 0)
return -1;
if (!(flags & TEST_INVALID) &&
virTestLoadFile(outxml, &outXmlData) < 0)
return -1;
if (!(def = virDomainCheckpointDefParseString(inXmlData, driver.caps,
driver.xmlopt,
parseflags))) {
if (flags & TEST_INVALID)
return 0;
return -1;
}
if (flags & TEST_PARENT) {
if (def->parent.parent_name)
return -1;
if (VIR_STRDUP(def->parent.parent_name, "1525111885") < 0)
return -1;
}
if (flags & TEST_VDA_BITMAP) {
virDomainCheckpointDiskDefPtr disk;
if (VIR_EXPAND_N(def->disks, def->ndisks, 1) < 0)
return -1;
disk = &def->disks[0];
if (disk->bitmap)
return -1;
if (!disk->name) {
disk->type = VIR_DOMAIN_CHECKPOINT_TYPE_BITMAP;
if (VIR_STRDUP(disk->name, "vda") < 0)
return -1;
} else if (STRNEQ(disk->name, "vda")) {
return -1;
}
if (VIR_STRDUP(disk->bitmap, def->parent.name) < 0)
return -1;
}
if (flags & TEST_SIZE) {
def->disks[0].size = 1048576;
formatflags |= VIR_DOMAIN_CHECKPOINT_FORMAT_SIZE;
}
/* Parsing XML does not populate the domain definition; work
* around that by not requesting domain on output */
if (!def->parent.dom)
formatflags |= VIR_DOMAIN_CHECKPOINT_FORMAT_NO_DOMAIN;
if (!(actual = virDomainCheckpointDefFormat(def, driver.caps,
driver.xmlopt,
formatflags)))
return -1;
if (STRNEQ(outXmlData, actual)) {
virTestDifferenceFull(stderr, outXmlData, outxml, actual, inxml);
return -1;
}
return 0;
}
struct testInfo {
const char *inxml;
const char *outxml;
long long creationTime;
unsigned int flags;
};
static long long mocktime;
static int
testCheckpointPostParse(virDomainMomentDefPtr def)
{
if (!mocktime)
return 0;
if (def->creationTime)
return -1;
def->creationTime = mocktime;
if (!def->name &&
virAsprintf(&def->name, "%lld", def->creationTime) < 0)
return -1;
return 0;
}
static int
testCompareXMLToXMLHelper(const void *data)
{
const struct testInfo *info = data;
mocktime = info->creationTime;
return testCompareXMLToXMLFiles(info->inxml, info->outxml, info->flags);
}
static int
mymain(void)
{
int ret = 0;
if (qemuTestDriverInit(&driver) < 0)
return EXIT_FAILURE;
virDomainXMLOptionSetMomentPostParse(driver.xmlopt,
testCheckpointPostParse);
# define DO_TEST(prefix, name, inpath, outpath, time, flags) \
do { \
const struct testInfo info = {abs_srcdir "/" inpath "/" name ".xml", \
abs_srcdir "/" outpath "/" name ".xml", \
time, flags}; \
if (virTestRun("CHECKPOINT XML-2-XML " prefix " " name, \
testCompareXMLToXMLHelper, &info) < 0) \
ret = -1; \
} while (0)
# define DO_TEST_INOUT(name, time, flags) \
DO_TEST("in->out", name, \
"qemudomaincheckpointxml2xmlin", \
"qemudomaincheckpointxml2xmlout", \
time, flags)
# define DO_TEST_OUT(name, flags) \
DO_TEST("out->out", name, \
"qemudomaincheckpointxml2xmlout", \
"qemudomaincheckpointxml2xmlout", \
0, flags | TEST_REDEFINE)
# define DO_TEST_INVALID(name) \
DO_TEST("in->out", name, \
"qemudomaincheckpointxml2xmlin", \
"qemudomaincheckpointxml2xmlout", \
0, TEST_INVALID)
/* Unset or set all envvars here that are copied in qemudBuildCommandLine
* using ADD_ENV_COPY, otherwise these tests may fail due to unexpected
* values for these envvars */
setenv("PATH", "/bin", 1);
/* Test a normal user redefine */
DO_TEST_OUT("redefine", 0);
/* Tests of valid user input, and resulting output */
DO_TEST_INOUT("empty", 1525889631, TEST_VDA_BITMAP);
DO_TEST_INOUT("disk-default", 1525889631, TEST_PARENT | TEST_VDA_BITMAP);
DO_TEST_INOUT("sample", 1525889631, TEST_PARENT | TEST_VDA_BITMAP);
DO_TEST_INOUT("size", 1553648510,
TEST_PARENT | TEST_VDA_BITMAP | TEST_SIZE);
/* Tests of invalid user input */
DO_TEST_INVALID("disk-invalid");
DO_TEST_INVALID("name-invalid");
qemuTestDriverFree(&driver);
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
VIR_TEST_MAIN(mymain)
#else
int
main(void)
{
return EXIT_AM_SKIP;
}
#endif /* WITH_QEMU */