[libvirt] [PATCH v1 1/3] conf : Add loadparm boot option for a boot device
Farhan Ali
alifm at linux.vnet.ibm.com
Thu May 11 13:27:30 UTC 2017
Update the per device boot schema to add an optional loadparm parameter.
Extend the virDomainDeviceInfo to support loadparm option.
Modify the appropriate functions to parse loadparm from boot device xml.
Signed-off-by: Farhan Ali <alifm at linux.vnet.ibm.com>
Reviewed-by: Bjoern Walk <bwalk at linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy at linux.vnet.ibm.com>
Reviewed-by: Marc Hartmayer <mhartmay at linux.vnet.ibm.com>
---
docs/formatdomain.html.in | 8 +++--
docs/news.xml | 9 ++++++
docs/schemas/domaincommon.rng | 7 +++++
src/conf/device_conf.h | 1 +
src/conf/domain_conf.c | 69 +++++++++++++++++++++++++++++++++++++++++--
5 files changed, 90 insertions(+), 4 deletions(-)
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 8c884f4..5f3441c 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -3013,8 +3013,12 @@
<dt><code>boot</code></dt>
<dd>Specifies that the disk is bootable. The <code>order</code>
attribute determines the order in which devices will be tried during
- boot sequence. The per-device <code>boot</code> elements cannot be
- used together with general boot elements in
+ boot sequence. On S390 architecture only the first boot device is used.
+ The optional <code>loadparm</code> attribute can be used to select a
+ boot entry for S390 architecture.
+ <span class="since">Since 3.4.0</span>
+ The per-device <code>boot</code> elements cannot be used together
+ with general boot elements in
<a href="#elementsOSBIOS">BIOS bootloader</a> section.
<span class="since">Since 0.8.8</span>
</dd>
diff --git a/docs/news.xml b/docs/news.xml
index 2f01449..1241b0b 100644
--- a/docs/news.xml
+++ b/docs/news.xml
@@ -35,6 +35,15 @@
<libvirt>
<release version="v3.4.0" date="unreleased">
<section title="New features">
+ <change>
+ <summary>
+ qemu: Add support for loadparm for a boot device
+ </summary>
+ <description>
+ Add an optional boot parameter 'loadparm' for a boot device.
+ On S390 architecture the loadparm is used to select a boot entry.
+ </description>
+ </change>
</section>
<section title="Improvements">
</section>
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 281309e..c0b47c2 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -4997,6 +4997,13 @@
<attribute name="order">
<ref name="positiveInteger"/>
</attribute>
+ <optional>
+ <attribute name="loadparm">
+ <data type="string">
+ <param name="pattern">[a-zA-Z0-9.\s]{1,8}</param>
+ </data>
+ </attribute>
+ </optional>
<empty/>
</element>
</define>
diff --git a/src/conf/device_conf.h b/src/conf/device_conf.h
index a20de85..48782be 100644
--- a/src/conf/device_conf.h
+++ b/src/conf/device_conf.h
@@ -167,6 +167,7 @@ struct _virDomainDeviceInfo {
* assignment, never saved and never reported.
*/
int pciConnectFlags; /* enum virDomainPCIConnectFlags */
+ char *loadparm;
};
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 0ff216e..71fd666 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -3514,6 +3514,7 @@ void virDomainDeviceInfoClear(virDomainDeviceInfoPtr info)
memset(&info->addr, 0, sizeof(info->addr));
info->type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE;
VIR_FREE(info->romfile);
+ VIR_FREE(info->loadparm);
}
@@ -5193,6 +5194,48 @@ virDomainDefValidate(virDomainDefPtr def,
return 0;
}
+/**
+ * virDomainDeviceLoadparmIsValid
+ * @loadparm : The string to validate
+ *
+ * The valid set of values for loadparm are [a-zA-Z0-9.]
+ * and blank spaces.
+ * The maximum allowed length is 8 characters.
+ * An empty string is considered invalid
+ */
+static bool
+virDomainDeviceLoadparmIsValid(const char *loadparm)
+{
+ size_t i;
+
+ if (virStringIsEmpty(loadparm)) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("loadparm cannot be an empty string"));
+ return false;
+ }
+
+ if (strlen(loadparm) > 8) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("loadparm '%s' exceeds 8 characters"), loadparm);
+ return false;
+ }
+
+ for (i = 0; i < strlen(loadparm); i++) {
+ uint8_t c = loadparm[i];
+
+ if (('A' <= c && c <= 'Z') || ('0' <= c && c <= '9') ||
+ (c == '.') || (c == ' ')) {
+ continue;
+ } else {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("invalid loadparm char '%c', expecting chars"
+ " in set of [a-zA-Z0-9.] and blank spaces"), c);
+ return false;
+ }
+ }
+
+ return true;
+}
/* Generate a string representation of a device address
* @info address Device address to stringify
@@ -5202,9 +5245,14 @@ virDomainDeviceInfoFormat(virBufferPtr buf,
virDomainDeviceInfoPtr info,
unsigned int flags)
{
- if ((flags & VIR_DOMAIN_DEF_FORMAT_ALLOW_BOOT) && info->bootIndex)
- virBufferAsprintf(buf, "<boot order='%u'/>\n", info->bootIndex);
+ if ((flags & VIR_DOMAIN_DEF_FORMAT_ALLOW_BOOT) && info->bootIndex) {
+ virBufferAsprintf(buf, "<boot order='%u'", info->bootIndex);
+ if (info->loadparm)
+ virBufferAsprintf(buf, " loadparm='%s'", info->loadparm);
+
+ virBufferAddLit(buf, "/>\n");
+ }
if (info->alias &&
!(flags & VIR_DOMAIN_DEF_FORMAT_INACTIVE)) {
virBufferAsprintf(buf, "<alias name='%s'/>\n", info->alias);
@@ -5630,6 +5678,7 @@ virDomainDeviceBootParseXML(xmlNodePtr node,
virHashTablePtr bootHash)
{
char *order;
+ char *loadparm;
int ret = -1;
if (!(order = virXMLPropString(node, "order"))) {
@@ -5658,10 +5707,26 @@ virDomainDeviceBootParseXML(xmlNodePtr node,
goto cleanup;
}
+ loadparm = virXMLPropString(node, "loadparm");
+ if (loadparm) {
+ if (virStringToUpper(&info->loadparm, loadparm) != 1) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Failed to convert loadparm '%s' to upper case"),
+ loadparm);
+ goto cleanup;
+ }
+
+ if (!virDomainDeviceLoadparmIsValid(info->loadparm)) {
+ VIR_FREE(info->loadparm);
+ goto cleanup;
+ }
+ }
+
ret = 0;
cleanup:
VIR_FREE(order);
+ VIR_FREE(loadparm);
return ret;
}
--
1.9.1
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