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Refactoring virDomainChrSourceDefParseXML() to use XPath
Signed-off-by: Kristina Hanicova <khanicov@redhat.com> Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Kristina Hanicova
Michal Privoznik
parent
3ee51e1b56
commit
d705f5b4f2
@ -11308,112 +11308,119 @@ virDomainChrSourceDefParseXML(virDomainChrSourceDef *def,
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virDomainChrDef *chr_def,
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xmlXPathContextPtr ctxt)
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{
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bool logParsed = false;
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bool protocolParsed = false;
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int sourceParsed = 0;
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g_autofree xmlNodePtr *logs = NULL;
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int nlogs = 0;
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g_autofree xmlNodePtr *protocols = NULL;
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int nprotocols = 0;
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g_autofree xmlNodePtr *sources = NULL;
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int nsources = 0;
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VIR_XPATH_NODE_AUTORESTORE(ctxt)
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for (; cur; cur = cur->next) {
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if (cur->type != XML_ELEMENT_NODE)
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continue;
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ctxt->node = cur;
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if (virXMLNodeNameEqual(cur, "source")) {
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/* Parse only the first source element since only one is used
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* for chardev devices, the only exception is UDP type, where
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* user can specify two source elements. */
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if (sourceParsed >= 1 && def->type != VIR_DOMAIN_CHR_TYPE_UDP) {
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virReportError(VIR_ERR_XML_ERROR, "%s",
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_("only one source element is allowed for "
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"character device"));
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goto error;
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} else if (sourceParsed >= 2) {
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virReportError(VIR_ERR_XML_ERROR, "%s",
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_("only two source elements are allowed for "
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"character device"));
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goto error;
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}
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sourceParsed++;
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switch ((virDomainChrType) def->type) {
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case VIR_DOMAIN_CHR_TYPE_FILE:
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if (virDomainChrSourceDefParseFile(def, cur) < 0)
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goto error;
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break;
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case VIR_DOMAIN_CHR_TYPE_PTY:
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/* PTY path is only parsed from live xml. */
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if (!(flags & VIR_DOMAIN_DEF_PARSE_INACTIVE))
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def->data.file.path = virXMLPropString(cur, "path");
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break;
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case VIR_DOMAIN_CHR_TYPE_DEV:
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case VIR_DOMAIN_CHR_TYPE_PIPE:
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def->data.file.path = virXMLPropString(cur, "path");
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break;
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case VIR_DOMAIN_CHR_TYPE_UNIX:
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if (virDomainChrSourceDefParseUnix(def, cur, ctxt) < 0)
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goto error;
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break;
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case VIR_DOMAIN_CHR_TYPE_UDP:
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if (virDomainChrSourceDefParseUDP(def, cur) < 0)
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goto error;
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break;
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case VIR_DOMAIN_CHR_TYPE_TCP:
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if (virDomainChrSourceDefParseTCP(def, cur, ctxt, flags) < 0)
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goto error;
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break;
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case VIR_DOMAIN_CHR_TYPE_SPICEPORT:
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def->data.spiceport.channel = virXMLPropString(cur, "channel");
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break;
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case VIR_DOMAIN_CHR_TYPE_NMDM:
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def->data.nmdm.master = virXMLPropString(cur, "master");
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def->data.nmdm.slave = virXMLPropString(cur, "slave");
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break;
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case VIR_DOMAIN_CHR_TYPE_LAST:
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case VIR_DOMAIN_CHR_TYPE_NULL:
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case VIR_DOMAIN_CHR_TYPE_VC:
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case VIR_DOMAIN_CHR_TYPE_STDIO:
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case VIR_DOMAIN_CHR_TYPE_SPICEVMC:
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break;
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}
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/* Check for an optional seclabel override in <source/>. */
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if (chr_def) {
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VIR_XPATH_NODE_AUTORESTORE(ctxt)
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ctxt->node = cur;
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if (virSecurityDeviceLabelDefParseXML(&def->seclabels,
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&def->nseclabels,
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ctxt,
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flags) < 0) {
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goto error;
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}
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}
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} else if (virXMLNodeNameEqual(cur, "log")) {
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if (logParsed) {
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virReportError(VIR_ERR_XML_ERROR, "%s",
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_("only one protocol element is allowed for "
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"character device"));
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goto error;
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}
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logParsed = true;
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if (virDomainChrSourceDefParseLog(def, cur) < 0)
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goto error;
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} else if (virXMLNodeNameEqual(cur, "protocol")) {
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if (protocolParsed) {
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virReportError(VIR_ERR_XML_ERROR, "%s",
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_("only one log element is allowed for "
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"character device"));
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goto error;
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}
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protocolParsed = true;
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if (virDomainChrSourceDefParseProtocol(def, cur) < 0)
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goto error;
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if ((nsources = virXPathNodeSet("./source", ctxt, &sources)) < 0) {
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goto error;
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} else if (nsources > 0) {
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/* Parse only the first source element since only one is used
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* for chardev devices, the only exception is UDP type, where
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* user can specify two source elements. */
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if (nsources > 1 && def->type != VIR_DOMAIN_CHR_TYPE_UDP) {
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virReportError(VIR_ERR_XML_ERROR, "%s",
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_("only one source element is allowed for "
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"character device"));
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goto error;
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} else if (nsources > 2) {
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virReportError(VIR_ERR_XML_ERROR, "%s",
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_("only two source elements are allowed for "
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"character device"));
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goto error;
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}
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switch ((virDomainChrType) def->type) {
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case VIR_DOMAIN_CHR_TYPE_FILE:
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if (virDomainChrSourceDefParseFile(def, sources[0]) < 0)
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goto error;
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break;
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case VIR_DOMAIN_CHR_TYPE_PTY:
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/* PTY path is only parsed from live xml. */
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if (!(flags & VIR_DOMAIN_DEF_PARSE_INACTIVE))
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def->data.file.path = virXMLPropString(sources[0], "path");
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break;
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case VIR_DOMAIN_CHR_TYPE_DEV:
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case VIR_DOMAIN_CHR_TYPE_PIPE:
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def->data.file.path = virXMLPropString(sources[0], "path");
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break;
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case VIR_DOMAIN_CHR_TYPE_UNIX:
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if (virDomainChrSourceDefParseUnix(def, sources[0], ctxt) < 0)
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goto error;
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break;
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case VIR_DOMAIN_CHR_TYPE_UDP:
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if ((virDomainChrSourceDefParseUDP(def, sources[0]) < 0) ||
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(nsources == 2 && virDomainChrSourceDefParseUDP(def, sources[1]) < 0))
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goto error;
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break;
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case VIR_DOMAIN_CHR_TYPE_TCP:
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if (virDomainChrSourceDefParseTCP(def, sources[0], ctxt, flags) < 0)
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goto error;
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break;
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case VIR_DOMAIN_CHR_TYPE_SPICEPORT:
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def->data.spiceport.channel = virXMLPropString(sources[0], "channel");
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break;
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case VIR_DOMAIN_CHR_TYPE_NMDM:
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def->data.nmdm.master = virXMLPropString(sources[0], "master)");
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def->data.nmdm.slave = virXMLPropString(sources[0], "slave)");
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break;
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case VIR_DOMAIN_CHR_TYPE_LAST:
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case VIR_DOMAIN_CHR_TYPE_NULL:
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case VIR_DOMAIN_CHR_TYPE_VC:
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case VIR_DOMAIN_CHR_TYPE_STDIO:
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case VIR_DOMAIN_CHR_TYPE_SPICEVMC:
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break;
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}
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/* Check for an optional seclabel override in <source/>. */
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if (chr_def) {
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xmlNodePtr tmp = ctxt->node;
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ctxt->node = sources[0];
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if (virSecurityDeviceLabelDefParseXML(&def->seclabels, &def->nseclabels,
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ctxt, flags) < 0) {
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goto error;
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}
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ctxt->node = tmp;
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}
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}
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if ((nlogs = virXPathNodeSet("./log", ctxt, &logs)) < 0) {
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goto error;
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} else if (nlogs == 1) {
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if (virDomainChrSourceDefParseLog(def, logs[0]) < 0)
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goto error;
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} else if (nlogs > 1) {
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virReportError(VIR_ERR_XML_ERROR, "%s",
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_("only one log element is allowed for "
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"character device"));
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goto error;
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}
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if ((nprotocols = virXPathNodeSet("./protocol", ctxt, &protocols)) < 0) {
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goto error;
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} else if (nprotocols == 1) {
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if (virDomainChrSourceDefParseProtocol(def, protocols[0]) < 0)
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goto error;
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} else if (nprotocols > 1) {
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virReportError(VIR_ERR_XML_ERROR, "%s",
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_("only one protocol element is allowed for "
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"character device"));
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goto error;
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}
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return 0;
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@ -11567,7 +11574,7 @@ virDomainChrDefParseXML(virDomainXMLOption *xmlopt,
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((def->targetType = virDomainChrDefaultTargetType(def->deviceType)) < 0))
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goto error;
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if (virDomainChrSourceDefParseXML(def->source, node->children, flags, def,
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if (virDomainChrSourceDefParseXML(def->source, node, flags, def,
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ctxt) < 0)
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goto error;
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@ -11691,7 +11698,7 @@ virDomainSmartcardDefParseXML(virDomainXMLOption *xmlopt,
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}
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cur = node->children;
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if (virDomainChrSourceDefParseXML(def->data.passthru, cur, flags,
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if (virDomainChrSourceDefParseXML(def->data.passthru, node, flags,
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NULL, ctxt) < 0)
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return NULL;
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@ -13644,7 +13651,7 @@ virDomainRNGDefParseXML(virDomainXMLOption *xmlopt,
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}
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if (virDomainChrSourceDefParseXML(def->source.chardev,
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backends[0]->children, flags,
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backends[0], flags,
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NULL, ctxt) < 0)
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goto error;
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break;
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@ -14651,7 +14658,6 @@ virDomainRedirdevDefParseXML(virDomainXMLOption *xmlopt,
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xmlXPathContextPtr ctxt,
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unsigned int flags)
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{
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xmlNodePtr cur;
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virDomainRedirdevDef *def;
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g_autofree char *bus = NULL;
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g_autofree char *type = NULL;
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@ -14685,10 +14691,9 @@ virDomainRedirdevDefParseXML(virDomainXMLOption *xmlopt,
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goto error;
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}
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cur = node->children;
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/* boot gets parsed in virDomainDeviceInfoParseXML
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* source gets parsed in virDomainChrSourceDefParseXML */
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if (virDomainChrSourceDefParseXML(def->source, cur, flags,
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if (virDomainChrSourceDefParseXML(def->source, node, flags,
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NULL, ctxt) < 0)
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goto error;
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