3:54 a.m.
Hi Daniel
I contribute some corrected patches.
1. strtok() --> strtok_r()
--> Add tok_buf for strtok_r()
2. Correct the first argument of strtok_r()
3. Add a version of XML
--> So that the format of XML may change in the future
Signed-off-by: Masayuki Sunou <fj1826dm(a)aa.jp.fujitsu.com>
Thanks
-------------------------------------------------------------------------------
Index: libvirt/include/libvirt/libvirt.h
===================================================================
RCS file: /data/cvs/libvirt/include/libvirt/libvirt.h,v
retrieving revision 1.40
diff -u -p -r1.40 libvirt.h
--- libvirt/include/libvirt/libvirt.h 8 Mar 2007 08:31:07 -0000 1.40
+++ libvirt/include/libvirt/libvirt.h 15 Mar 2007 06:09:16 -0000
@@ -221,6 +221,12 @@ int virGetVersion (unsigned long *lib
unsigned long *typeVer);
/*
+ * Macro providing the version of the XML
+ */
+#define XML_VERSION_NUMBER 1
+
+
+/*
* Connection and disconnections to the Hypervisor
*/
int virInitialize (void);
Index: libvirt/src/xend_internal.c
===================================================================
RCS file: /data/cvs/libvirt/src/xend_internal.c,v
retrieving revision 1.102
diff -u -p -r1.102 xend_internal.c
--- libvirt/src/xend_internal.c 14 Mar 2007 13:14:51 -0000 1.102
+++ libvirt/src/xend_internal.c 15 Mar 2007 06:09:23 -0000
@@ -1344,7 +1344,7 @@ xend_parse_sexp_desc(virConnectPtr conn,
domid = sexpr_int(root, "domain/domid");
else
domid = -1;
- virBufferVSprintf(&buf, "<domain type='xen'
id='%d'>\n", domid);
+ virBufferVSprintf(&buf, "<domain type='xen' id='%d'
version='%d'>\n", domid, XML_VERSION_NUMBER);
tmp = sexpr_node(root, "domain/name");
if (tmp == NULL) {
@@ -1668,6 +1668,57 @@ xend_parse_sexp_desc(virConnectPtr conn,
free(tty);
}
+ tmp = sexpr_node(root, "domain/image/hvm/usbdevice");
+ if ((tmp != NULL) && (tmp[0] != 0)) {
+ char *offset;
+ char *tmp_buf;
+ char *tok_buf;
+ virBufferAdd(&buf, " <usb>\n", 10 );
+ if (strncmp(tmp, "disk:", 5) == 0) {
+ tmp_buf = strdup(tmp);
+ offset = strtok_r(tmp_buf, ":", &tok_buf);
+ if ((offset = strtok_r(NULL, ":", &tok_buf)) != NULL) {
+ virBufferAdd(&buf, " <disk>\n", 13 );
+ virBufferVSprintf(&buf, " <source
dev='%s'/>\n", offset);
+ virBufferAdd(&buf, " </disk>\n", 14 );
+ }
+ free(tmp_buf);
+ } else if (strncmp(tmp, "host:", 5) == 0) {
+ if (strrchr(tmp, ':') > (tmp + 4)) {
+ tmp_buf = strdup(tmp);
+ offset = strtok_r(tmp_buf, ":", &tok_buf);
+ if ((offset = strtok_r(NULL, ":", &tok_buf)) != NULL) {
+ virBufferVSprintf(&buf, " <host
vendor='%s'", offset);
+ if ((offset = strtok_r(NULL, ":", &tok_buf)) != NULL)
{
+ virBufferVSprintf(&buf, " product='%s'",
offset);
+ }
+ virBufferAdd(&buf, "/>\n", 3 );
+ }
+ free(tmp_buf);
+ } else {
+ tmp_buf = strdup(tmp);
+ offset = strtok_r(tmp_buf, ":.", &tok_buf);
+ if ((offset = strtok_r(NULL, ":.", &tok_buf)) != NULL) {
+ virBufferVSprintf(&buf, " <host
bus='%s'", offset);
+ if ((offset = strtok_r(NULL, ":.", &tok_buf)) != NULL)
{
+ virBufferVSprintf(&buf, " addr='%s'",
offset);
+ }
+ virBufferAdd(&buf, "/>\n", 3 );
+ }
+ free(tmp_buf);
+ }
+ } else if (strncmp(tmp, "mouse", 5) == 0) {
+ virBufferAdd(&buf, " <mouse/>\n", 15 );
+ } else if (strncmp(tmp, "tablet", 6) == 0) {
+ virBufferAdd(&buf, " <tablet/>\n", 16 );
+ }
+ virBufferAdd(&buf, " </usb>\n", 11 );
+ } else if (sexpr_int(root, "domain/image/hvm/usb")) {
+ virBufferAdd(&buf, " <usb>\n", 10 );
+ virBufferAdd(&buf, " <bus/>\n", 13 );
+ virBufferAdd(&buf, " </usb>\n", 11 );
+ }
+
virBufferAdd(&buf, " </devices>\n", 13);
virBufferAdd(&buf, "</domain>\n", 10);
Index: libvirt/src/xml.c
===================================================================
RCS file: /data/cvs/libvirt/src/xml.c,v
retrieving revision 1.64
diff -u -p -r1.64 xml.c
--- libvirt/src/xml.c 8 Mar 2007 14:12:06 -0000 1.64
+++ libvirt/src/xml.c 15 Mar 2007 06:09:27 -0000
@@ -524,6 +524,66 @@ virDomainParseXMLOSDescHVM(virConnectPtr
}
xmlXPathFreeObject(obj);
+ obj = xmlXPathEval(BAD_CAST "/domain/devices/usb", ctxt);
+ if ((obj != NULL) && (obj->type == XPATH_NODESET) &&
+ (obj->nodesetval != NULL) && (obj->nodesetval->nodeNr == 1)) {
+ virBufferAdd(buf, "(usb 1)", 7);
+ xmlXPathFreeObject(obj);
+ obj = xmlXPathEval(BAD_CAST
"string(/domain/devices/usb/disk/source/@dev)", ctxt);
+ if ((obj != NULL) && (obj->type == XPATH_STRING) &&
+ (obj->stringval != NULL) && (obj->stringval[0] != 0)) {
+ virBufferVSprintf(buf, "(usbdevice 'disk:%s')",
obj->stringval);
+ }
+ if (obj)
+ xmlXPathFreeObject(obj);
+
+ obj = xmlXPathEval(BAD_CAST "string(/domain/devices/usb/host/@vendor)",
ctxt);
+ if ((obj != NULL) && (obj->type == XPATH_STRING) &&
+ (obj->stringval != NULL) && (obj->stringval[0] != 0)) {
+ virBufferVSprintf(buf, "(usbdevice 'host:%s",
obj->stringval);
+ xmlXPathFreeObject(obj);
+ obj = xmlXPathEval(BAD_CAST
"string(/domain/devices/usb/host/@product)", ctxt);
+ if ((obj != NULL) && (obj->type == XPATH_STRING) &&
+ (obj->stringval != NULL) && (obj->stringval[0] != 0)) {
+ virBufferVSprintf(buf, ":%s", obj->stringval);
+ }
+ virBufferAdd(buf, "')", 2);
+ }
+ if (obj)
+ xmlXPathFreeObject(obj);
+
+ obj = xmlXPathEval(BAD_CAST "string(/domain/devices/usb/host/@bus)",
ctxt);
+ if ((obj != NULL) && (obj->type == XPATH_STRING) &&
+ (obj->stringval != NULL) && (obj->stringval[0] != 0)) {
+ virBufferVSprintf(buf, "(usbdevice 'host:%s",
obj->stringval);
+ xmlXPathFreeObject(obj);
+ obj = xmlXPathEval(BAD_CAST
"string(/domain/devices/usb/host/@addr)", ctxt);
+ if ((obj != NULL) && (obj->type == XPATH_STRING) &&
+ (obj->stringval != NULL) && (obj->stringval[0] != 0)) {
+ virBufferVSprintf(buf, ".%s", obj->stringval);
+ }
+ virBufferAdd(buf, "')", 2);
+ }
+ if (obj)
+ xmlXPathFreeObject(obj);
+
+ obj = xmlXPathEval(BAD_CAST "/domain/devices/usb/mouse", ctxt);
+ if ((obj != NULL) && (obj->type == XPATH_NODESET) &&
+ (obj->nodesetval != NULL) && (obj->nodesetval->nodeNr == 1))
{
+ virBufferAdd(buf, "(usbdevice 'mouse')", 19);
+ }
+ if (obj)
+ xmlXPathFreeObject(obj);
+
+ obj = xmlXPathEval(BAD_CAST "/domain/devices/usb/tablet", ctxt);
+ if ((obj != NULL) && (obj->type == XPATH_NODESET) &&
+ (obj->nodesetval != NULL) && (obj->nodesetval->nodeNr == 1))
{
+ virBufferAdd(buf, "(usbdevice 'tablet')", 20);
+ }
+ }
+ if (obj)
+ xmlXPathFreeObject(obj);
+
virBufferAdd(buf, "))", 2);
if (boot_dev)
-------------------------------------------------------------------------------
In message <20070314155441.GI3127(a)redhat.com>
"Re: [Libvir] [PATCH] Enable USB device setting information handling on
virsh."
"Daniel Veillard <veillard(a)redhat.com>" wrote:
On Wed, Mar 14, 2007 at 03:38:02AM +0000, Daniel P. Berrange wrote:
> I'm not so sure about this to be honest. This is very verbose syntax and having
> the empty <usb> wrapper around every element isn't adding all that much
useful
> info in relation to its verbosity.
I based my review on the structure, this was looking flexible enough to
not raise big problem, but I didn't tried to make a global analysis, thanks
for doing this !
> I've been thinking about how the contents of the <devices> section relates
to
> the way Linux models devices in sysfs. Thus far we have 'interface',
'disk'
> 'console' and 'graphics'.
>
> - The 'disk' element maps onto /sys/block or /sys/class/scsi_disk
> - The 'interface' element maps onto /sys/class/net
> - The 'graphics' element maps onto /sys/class/graphics
> - The 'console' element maps onto /sys/class/misc
>
> I tend to think of /sys/block as really being a class too (ie /sys/class/block).
>
> With the way we've been thinking about USB in this thread so far though,
we're
> approaching a model that is much more like /sys/bus rather than /sys/class. ie
> we're grouping everything under a bus type at the top level, rather than the
> rest of the nodes which are grouped by class (function).
>
> Listing again at what things we need to represent here:
>
> - Input devices - mouse, tablet
> - Disk devices
> - Presence of USB or not (aka whether a bus is emulated)
> - Pass through of devices from the host bus
>
> Now consider a couple of non-USB related things we don't have representations
> for yet
>
> - VMWare mouse type
> - Summa graphics tablet - a serial device tablet
> - PS/2 mouse - implicitly represented if we don't ask for any other mouse
> - PCI device pass through from host
> - Serial ports
> - Parallel ports
> - Sound cards
>
> Basically we end up with two sorts of things we need to represent:
>
> - Emulation of particular classes of devices grouped by their function
> - Pass through of real hardware, irrespective of function
>
> Based on this observation I think we need to actually treat the Xen USB configs in
> two different ways according to the above split.
yes that look nicer in the long term
> So USB disks might look like
>
> <disk type='file' device='disk'>
> <source file='/some/path.img'/>
> <target dev='usb'/>
> </disk>
>
> NB, I'm using a generic 'usb' tag as the guest device name, since USB
devices are
> fundamentally hotplug oriented it is very unsual to have persistent USB bus IDs
> and thus you'll never have a persistent device node. Maybe its better to have a
> separate named attribute instead of re-using the 'dev' attribute in
<target>:
>
> <disk type='file' device='disk'>
> <source file='/some/path.img'/>
> <target bus='usb'/>
> </disk>
>
> Or a separate bus type ?
>
> <disk type='file' device='disk'>
> <source file='/some/path.img'/>
> <bus type='usb'/>
> </disk>
I'm not sure this really adds much over <target dev='usb'/>, we can
still
add extra attributes if needed onto target in the usb case.
> Anyway, now onto input devices. It would seem like a reasonable idea to have a
> top level '<input>' device element.
Yes, but when you mean top level you really mean as child of <devices>, I
see why an input would be any different, right ?
> So a generic USB mouse could be
>
> <input type='usbmouse'/>
>
> While a tablet would be
>
> <input type='usbtablet'/>
>
> Alternatively we could be explicit about the particular type of device / named
> model being emulated, eg for the USB tablet:
>
> <input type='evtouch'/>
>
> The downside with the latter is that its probably different device name for
> every different virt system. If we just kept a generic 'usbmouse' it would
> represent 'whatever particular usb mouse the virt system supports'.
>
> My final thought is that we could have 'typoe' be compulsory representing
the
> type of pointer. And then 'bus' and 'model' could be optional
atttributes to
> give more specific info if needed, eg for tablets these are equivalent:
>
> <input type='tablet'/>
> <input bus='serial' type='tablet'/>
> <input bus='serial' type='tablet'
model='summagraphics'/>
> <input type='tablet' model='summagraphics'/>
>
> And these are equivalent:
>
> <input type='tablet' model='evtouch'/>
> <input bus='usb' type='tablet'/>
> <input bus='usb' type='tablet' model='evtouch'/>
looks good to me
> When creating a domain, the caller could leave out 'bus' or 'model'
if they
> don't care about specific details. When asking libvirt for an XML dump of
> a running domain though, we'd fill in the most specific info we have.
>
> Finally, for the mapping of host devices through to the guest. In this case we
> probably do just want to group stuff under either a bus specific node, eg
>
> <usb>
> <host vendor='0234' model='2342'/>
> <host vendor='1248' model='4228'/>
> <host bus='03' device='02'/>
> </usb>
>
> <pci>
> <host id='0000:00:1f.1'/>
> </pci>
>
> Or a generic bus node
>
> <bus type='usb'>
> <host vendor='0234' model='2342'/>
> <host vendor='1248' model='4228'/>
> <host bus='03' device='02'/>
> </bus>
>
> <bus type='pci'>
> <host id='0000:00:1f.1'/>
> </bus>
I prefer the later, it's a bit more structured.
> This email was *significantly* longer than I thought it would be. I guess
> that's good because it shows there's some non-trivial decisions we should
> make before committing to a particular style of implementation. I want to
> ask do a little research of the way USB / PCI devices are expressed with
> VMWare config files, and with the XenAPI XML-RPC format in case there's
> any useful stuff we can learn from the way they model devices.
yes thanks for getting deeper on this !
Daniel
--
Red Hat Virtualization group http://redhat.com/virtualization/
Daniel Veillard | virtualization library http://libvirt.org/
veillard(a)redhat.com | libxml GNOME XML XSLT toolkit http://xmlsoft.org/
http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/