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libvirt/tests/qemublocktest.c
Peter Krempa 6e7e965dcd util: storage: Properly parse URIs with missing trailing slash 
The URI parser used by libvirt does not populate uri->path if the
trailing slash is missing. The code virStorageSourceParseBackingURI
would then not populate src->path.

As only NBD network disks are allowed to have the 'name' field in the
XML defining the disk source omitted we'd generate an invalid XML which
we'd not parse again.

Fix it by populating src->path with an empty string if the uri is
lacking slash.

As pointed out above NBD is special in this case since we actually allow
it being NULL. The URI path is used as export name. Since an empty
export does not make sense the new approach clears the src->path if the
trailing slash is present but nothing else.

Add test cases now to cover all the various cases for NBD and non-NBD
uris as there was to time only 1 test abusing the quirk witout slash for
NBD and all other URIs contained the slash or in case of NBD also the
export name.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
2018-10-12 16:41:48 +02:00

516 lines
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/*
* 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 "testutils.h"
#if WITH_YAJL
# include "testutilsqemu.h"
# include "testutilsqemuschema.h"
# include "virstoragefile.h"
# include "virstring.h"
# include "virlog.h"
# include "qemu/qemu_block.h"
# include "qemu/qemu_qapi.h"
# include "qemu/qemu_command.h"
# define VIR_FROM_THIS VIR_FROM_NONE
VIR_LOG_INIT("tests.storagetest");
struct testBackingXMLjsonXMLdata {
int type;
const char *xml;
};
static int
testBackingXMLjsonXML(const void *args)
{
const struct testBackingXMLjsonXMLdata *data = args;
xmlDocPtr xml = NULL;
xmlXPathContextPtr ctxt = NULL;
virBuffer buf = VIR_BUFFER_INITIALIZER;
virStorageSourcePtr xmlsrc = NULL;
virStorageSourcePtr jsonsrc = NULL;
virJSONValuePtr backendprops = NULL;
virJSONValuePtr wrapper = NULL;
char *propsstr = NULL;
char *protocolwrapper = NULL;
char *actualxml = NULL;
int ret = -1;
if (VIR_ALLOC(xmlsrc) < 0)
return -1;
xmlsrc->type = data->type;
if (!(xml = virXMLParseStringCtxt(data->xml, "(test storage source XML)", &ctxt)))
goto cleanup;
if (virDomainDiskSourceParse(ctxt->node, ctxt, xmlsrc, 0, NULL) < 0) {
fprintf(stderr, "failed to parse disk source xml\n");
goto cleanup;
}
if (!(backendprops = qemuBlockStorageSourceGetBackendProps(xmlsrc, true))) {
fprintf(stderr, "failed to format disk source json\n");
goto cleanup;
}
if (virJSONValueObjectCreate(&wrapper, "a:file", &backendprops, NULL) < 0)
goto cleanup;
if (!(propsstr = virJSONValueToString(wrapper, false)))
goto cleanup;
if (virAsprintf(&protocolwrapper, "json:%s", propsstr) < 0)
goto cleanup;
if (!(jsonsrc = virStorageSourceNewFromBackingAbsolute(protocolwrapper))) {
fprintf(stderr, "failed to parse disk json\n");
goto cleanup;
}
if (virDomainDiskSourceFormat(&buf, jsonsrc, 0, 0, NULL) < 0 ||
!(actualxml = virBufferContentAndReset(&buf))) {
fprintf(stderr, "failed to format disk source xml\n");
goto cleanup;
}
if (STRNEQ(actualxml, data->xml)) {
fprintf(stderr, "\n expected storage source xml:\n'%s'\n"
"actual storage source xml:\n%s\n"
"intermediate json:\n%s\n",
data->xml, actualxml, protocolwrapper);
goto cleanup;
}
ret = 0;
cleanup:
virStorageSourceFree(xmlsrc);
virStorageSourceFree(jsonsrc);
VIR_FREE(propsstr);
VIR_FREE(protocolwrapper);
VIR_FREE(actualxml);
virJSONValueFree(backendprops);
virJSONValueFree(wrapper);
virBufferFreeAndReset(&buf);
xmlXPathFreeContext(ctxt);
xmlFreeDoc(xml);
return ret;
}
struct testQemuDiskXMLToJSONData {
virQEMUDriverPtr driver;
virHashTablePtr schema;
virJSONValuePtr schemaroot;
const char *name;
bool fail;
virJSONValuePtr *props;
size_t nprops;
virQEMUCapsPtr qemuCaps;
};
static void
testQemuDiskXMLToPropsClear(struct testQemuDiskXMLToJSONData *data)
{
size_t i;
for (i = 0; i < data->nprops; i++)
virJSONValueFree(data->props[i]);
data->nprops = 0;
VIR_FREE(data->props);
}
static int
testQemuDiskXMLToJSONFakeSecrets(virStorageSourcePtr src)
{
qemuDomainStorageSourcePrivatePtr srcpriv;
if (!src->privateData &&
!(src->privateData = qemuDomainStorageSourcePrivateNew()))
return -1;
srcpriv = QEMU_DOMAIN_STORAGE_SOURCE_PRIVATE(src);
if (src->auth) {
if (VIR_ALLOC(srcpriv->secinfo) < 0)
return -1;
srcpriv->secinfo->type = VIR_DOMAIN_SECRET_INFO_TYPE_AES;
if (VIR_STRDUP(srcpriv->secinfo->s.aes.username, src->auth->username) < 0)
return -1;
if (virAsprintf(&srcpriv->secinfo->s.aes.alias, "%s-secalias",
NULLSTR(src->nodestorage)) < 0)
return -1;
}
if (src->encryption) {
if (VIR_ALLOC(srcpriv->encinfo) < 0)
return -1;
srcpriv->encinfo->type = VIR_DOMAIN_SECRET_INFO_TYPE_AES;
if (virAsprintf(&srcpriv->encinfo->s.aes.alias, "%s-encalias",
NULLSTR(src->nodeformat)) < 0)
return -1;
}
return 0;
}
static const char *testQemuDiskXMLToJSONPath = abs_srcdir "/qemublocktestdata/xml2json/";
static int
testQemuDiskXMLToProps(const void *opaque)
{
struct testQemuDiskXMLToJSONData *data = (void *) opaque;
virDomainDiskDefPtr disk = NULL;
virStorageSourcePtr n;
virJSONValuePtr formatProps = NULL;
virJSONValuePtr storageProps = NULL;
char *xmlpath = NULL;
char *xmlstr = NULL;
int ret = -1;
if (virAsprintf(&xmlpath, "%s%s.xml",
testQemuDiskXMLToJSONPath, data->name) < 0)
goto cleanup;
if (virTestLoadFile(xmlpath, &xmlstr) < 0)
goto cleanup;
/* qemu stores node names in the status XML portion */
if (!(disk = virDomainDiskDefParse(xmlstr, NULL, data->driver->xmlopt,
VIR_DOMAIN_DEF_PARSE_STATUS)))
goto cleanup;
if (qemuCheckDiskConfig(disk, data->qemuCaps) < 0 ||
qemuDomainDeviceDefValidateDisk(disk, data->qemuCaps) < 0) {
VIR_TEST_VERBOSE("invalid configuration for disk\n");
goto cleanup;
}
for (n = disk->src; virStorageSourceIsBacking(n); n = n->backingStore) {
if (testQemuDiskXMLToJSONFakeSecrets(n) < 0)
goto cleanup;
if (qemuDomainValidateStorageSource(n, data->qemuCaps) < 0)
goto cleanup;
if (qemuDomainPrepareDiskSourceData(disk, n, NULL, data->qemuCaps) < 0)
goto cleanup;
if (!(formatProps = qemuBlockStorageSourceGetBlockdevProps(n)) ||
!(storageProps = qemuBlockStorageSourceGetBackendProps(n, false))) {
if (!data->fail) {
VIR_TEST_VERBOSE("failed to generate qemu blockdev props\n");
goto cleanup;
}
} else if (data->fail) {
VIR_TEST_VERBOSE("qemu blockdev props should have failed\n");
goto cleanup;
}
if (VIR_APPEND_ELEMENT(data->props, data->nprops, formatProps) < 0 ||
VIR_APPEND_ELEMENT(data->props, data->nprops, storageProps) < 0)
goto cleanup;
}
ret = 0;
cleanup:
virJSONValueFree(formatProps);
virJSONValueFree(storageProps);
virDomainDiskDefFree(disk);
VIR_FREE(xmlpath);
VIR_FREE(xmlstr);
return ret;
}
static int
testQemuDiskXMLToPropsValidateSchema(const void *opaque)
{
struct testQemuDiskXMLToJSONData *data = (void *) opaque;
virBuffer debug = VIR_BUFFER_INITIALIZER;
char *propsstr = NULL;
char *debugmsg = NULL;
int ret = 0;
size_t i;
if (data->fail)
return EXIT_AM_SKIP;
for (i = 0; i < data->nprops; i++) {
if (testQEMUSchemaValidate(data->props[i], data->schemaroot,
data->schema, &debug) < 0) {
debugmsg = virBufferContentAndReset(&debug);
propsstr = virJSONValueToString(data->props[i], true);
VIR_TEST_VERBOSE("json does not conform to QAPI schema");
VIR_TEST_DEBUG("json:\n%s\ndoes not match schema. Debug output:\n %s",
propsstr, NULLSTR(debugmsg));
VIR_FREE(debugmsg);
VIR_FREE(propsstr);
ret = -1;
}
virBufferFreeAndReset(&debug);
}
return ret;
}
static int
testQemuDiskXMLToPropsValidateFile(const void *opaque)
{
struct testQemuDiskXMLToJSONData *data = (void *) opaque;
virBuffer buf = VIR_BUFFER_INITIALIZER;
char *jsonpath = NULL;
char *actual = NULL;
int ret = -1;
size_t i;
if (data->fail)
return EXIT_AM_SKIP;
if (virAsprintf(&jsonpath, "%s%s.json",
testQemuDiskXMLToJSONPath, data->name) < 0)
goto cleanup;
for (i = 0; i < data->nprops; i++) {
char *jsonstr;
if (!(jsonstr = virJSONValueToString(data->props[i], true)))
goto cleanup;
virBufferAdd(&buf, jsonstr, -1);
VIR_FREE(jsonstr);
}
if (virBufferCheckError(&buf) < 0)
goto cleanup;
actual = virBufferContentAndReset(&buf);
ret = virTestCompareToFile(actual, jsonpath);
cleanup:
VIR_FREE(jsonpath);
VIR_FREE(actual);
return ret;
}
static int
mymain(void)
{
int ret = 0;
virQEMUDriver driver;
struct testBackingXMLjsonXMLdata xmljsonxmldata;
struct testQemuDiskXMLToJSONData diskxmljsondata;
char *capslatest_x86_64 = NULL;
virQEMUCapsPtr caps_x86_64 = NULL;
if (qemuTestDriverInit(&driver) < 0)
return EXIT_FAILURE;
diskxmljsondata.driver = &driver;
if (!(capslatest_x86_64 = testQemuGetLatestCapsForArch(abs_srcdir "/qemucapabilitiesdata",
"x86_64", "xml")))
return EXIT_FAILURE;
VIR_TEST_VERBOSE("\nlatest caps x86_64: %s\n", capslatest_x86_64);
if (!(caps_x86_64 = qemuTestParseCapabilitiesArch(virArchFromString("x86_64"),
capslatest_x86_64)))
return EXIT_FAILURE;
diskxmljsondata.qemuCaps = caps_x86_64;
virTestCounterReset("qemu storage source xml->json->xml ");
# define TEST_JSON_FORMAT(tpe, xmlstr) \
do { \
xmljsonxmldata.type = tpe; \
xmljsonxmldata.xml = xmlstr; \
if (virTestRun(virTestCounterNext(), testBackingXMLjsonXML, \
&xmljsonxmldata) < 0) \
ret = -1; \
} while (0)
# define TEST_JSON_FORMAT_NET(xmlstr) \
TEST_JSON_FORMAT(VIR_STORAGE_TYPE_NETWORK, xmlstr)
TEST_JSON_FORMAT(VIR_STORAGE_TYPE_FILE, "<source file='/path/to/file'/>\n");
/* type VIR_STORAGE_TYPE_BLOCK is not tested since it parses back to 'file' */
/* type VIR_STORAGE_TYPE_DIR it is a 'format' driver in qemu */
TEST_JSON_FORMAT_NET("<source protocol='http' name=''>\n"
" <host name='example.com' port='80'/>\n"
"</source>\n");
TEST_JSON_FORMAT_NET("<source protocol='http' name='file'>\n"
" <host name='example.com' port='80'/>\n"
"</source>\n");
TEST_JSON_FORMAT_NET("<source protocol='https' name='file'>\n"
" <host name='example.com' port='432'/>\n"
"</source>\n");
TEST_JSON_FORMAT_NET("<source protocol='gluster' name='vol/file'>\n"
" <host name='example.com' port='24007'/>\n"
"</source>\n");
TEST_JSON_FORMAT_NET("<source protocol='gluster' name='testvol/img.qcow2'>\n"
" <host name='example.com' port='1234'/>\n"
" <host transport='unix' socket='/path/socket'/>\n"
" <host name='example.com' port='24007'/>\n"
"</source>\n");
TEST_JSON_FORMAT_NET("<source protocol='nbd'>\n"
" <host transport='unix' socket='/path/to/socket'/>\n"
"</source>\n");
TEST_JSON_FORMAT_NET("<source protocol='nbd' name='blah'>\n"
" <host name='example.org' port='6000'/>\n"
"</source>\n");
TEST_JSON_FORMAT_NET("<source protocol='nbd'>\n"
" <host name='example.org' port='6000'/>\n"
"</source>\n");
TEST_JSON_FORMAT_NET("<source protocol='ssh' name='blah'>\n"
" <host name='example.org' port='6000'/>\n"
"</source>\n");
TEST_JSON_FORMAT_NET("<source protocol='rbd' name='libvirt/test'>\n"
" <host name='example.com' port='1234'/>\n"
" <host name='example2.com'/>\n"
" <snapshot name='snapshotname'/>\n"
" <config file='/path/to/conf'/>\n"
"</source>\n");
TEST_JSON_FORMAT_NET("<source protocol='iscsi' name='iqn.2016-12.com.virttest:emulated-iscsi-noauth.target/0'>\n"
" <host name='test.org' port='3260'/>\n"
"</source>\n");
TEST_JSON_FORMAT_NET("<source protocol='iscsi' name='iqn.2016-12.com.virttest:emulated-iscsi-noauth.target/6'>\n"
" <host name='test.org' port='1234'/>\n"
"</source>\n");
TEST_JSON_FORMAT_NET("<source protocol='sheepdog' name='test'>\n"
" <host name='example.com' port='321'/>\n"
"</source>\n");
TEST_JSON_FORMAT_NET("<source protocol='vxhs' name='c6718f6b-0401-441d-a8c3-1f0064d75ee0'>\n"
" <host name='example.com' port='9999'/>\n"
"</source>\n");
# define TEST_DISK_TO_JSON_FULL(nme, fl) \
do { \
diskxmljsondata.name = nme; \
diskxmljsondata.props = NULL; \
diskxmljsondata.nprops = 0; \
diskxmljsondata.fail = fl; \
if (virTestRun("disk xml to props " nme, testQemuDiskXMLToProps, \
&diskxmljsondata) < 0) \
ret = -1; \
if (virTestRun("disk xml to props validate schema " nme, \
testQemuDiskXMLToPropsValidateSchema, &diskxmljsondata) < 0) \
ret = -1; \
if (virTestRun("disk xml to props validate file " nme, \
testQemuDiskXMLToPropsValidateFile, &diskxmljsondata) < 0) \
ret = -1; \
testQemuDiskXMLToPropsClear(&diskxmljsondata); \
} while (0)
# define TEST_DISK_TO_JSON(nme) TEST_DISK_TO_JSON_FULL(nme, false)
if (!(diskxmljsondata.schema = testQEMUSchemaLoad())) {
ret = -1;
goto cleanup;
}
if (virQEMUQAPISchemaPathGet("blockdev-add/arg-type",
diskxmljsondata.schema,
&diskxmljsondata.schemaroot) < 0 ||
!diskxmljsondata.schemaroot) {
VIR_TEST_VERBOSE("failed to find schema entry for blockdev-add\n");
ret = -1;
goto cleanup;
}
TEST_DISK_TO_JSON_FULL("nodename-long-format", true);
TEST_DISK_TO_JSON_FULL("nodename-long-protocol", true);
TEST_DISK_TO_JSON("file-raw-noopts");
TEST_DISK_TO_JSON("file-bochs-noopts");
TEST_DISK_TO_JSON("file-cloop-noopts");
TEST_DISK_TO_JSON("file-dmg-noopts");
TEST_DISK_TO_JSON("file-ploop-noopts");
TEST_DISK_TO_JSON("file-vdi-noopts");
TEST_DISK_TO_JSON("file-vhd-noopts");
TEST_DISK_TO_JSON("file-vpc-noopts");
TEST_DISK_TO_JSON("file-backing_basic-noopts");
TEST_DISK_TO_JSON("dir-fat-readonly");
TEST_DISK_TO_JSON("dir-fat-floppy");
TEST_DISK_TO_JSON("file-raw-aio_native");
TEST_DISK_TO_JSON("file-backing_basic-aio_threads");
TEST_DISK_TO_JSON("file-raw-luks");
TEST_DISK_TO_JSON("file-qcow2-backing-chain-noopts");
TEST_DISK_TO_JSON("file-qcow2-backing-chain-unterminated");
TEST_DISK_TO_JSON("file-qcow2-backing-chain-encryption");
TEST_DISK_TO_JSON("network-qcow2-backing-chain-encryption_auth");
TEST_DISK_TO_JSON("file-backing_basic-unmap");
TEST_DISK_TO_JSON("file-backing_basic-unmap-detect");
TEST_DISK_TO_JSON("file-backing_basic-unmap-ignore");
TEST_DISK_TO_JSON("file-backing_basic-detect");
TEST_DISK_TO_JSON("file-backing_basic-cache-none");
TEST_DISK_TO_JSON("file-backing_basic-cache-writethrough");
TEST_DISK_TO_JSON("file-backing_basic-cache-writeback");
TEST_DISK_TO_JSON("file-backing_basic-cache-directsync");
TEST_DISK_TO_JSON("file-backing_basic-cache-unsafe");
TEST_DISK_TO_JSON("network-qcow2-backing-chain-cache-unsafe");
TEST_DISK_TO_JSON("dir-fat-cache");
TEST_DISK_TO_JSON("network-nbd-tls");
TEST_DISK_TO_JSON("block-raw-noopts");
TEST_DISK_TO_JSON("block-raw-reservations");
cleanup:
virHashFree(diskxmljsondata.schema);
qemuTestDriverFree(&driver);
VIR_FREE(capslatest_x86_64);
virObjectUnref(caps_x86_64);
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
#else
static int
mymain(void)
{
return EXIT_AM_SKIP;
}
#endif
VIR_TEST_MAIN(mymain)
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