commit 8df17db8b36a2c1e8efa430a0493f66825b6b80e
Author: Cole (Work Acct) <crobinso@localhost.localdomain>
Date:   Thu Aug 21 23:08:04 2008 -0400

    Add hotplugged usb devices to running domain xml.

diff --git a/src/domain_conf.c b/src/domain_conf.c
index 3c61039..dc5eb0c 100644
--- a/src/domain_conf.c
+++ b/src/domain_conf.c
@@ -481,8 +481,8 @@ void virDomainRemoveInactive(virDomainObjPtr *doms,
 }
 
 #ifndef PROXY
-static int virDomainDiskCompare(virDomainDiskDefPtr a,
-                                virDomainDiskDefPtr b) {
+int virDomainDiskCompare(virDomainDiskDefPtr a,
+                         virDomainDiskDefPtr b) {
     if (a->bus == b->bus)
         return virDiskNameToIndex(a->dst) - virDiskNameToIndex(b->dst);
     else
diff --git a/src/domain_conf.h b/src/domain_conf.h
index b98f7f3..cfa2a90 100644
--- a/src/domain_conf.h
+++ b/src/domain_conf.h
@@ -526,6 +526,8 @@ char *virDomainCpuSetFormat(virConnectPtr conn,
                             char *cpuset,
                             int maxcpu);
 
+int virDomainDiskCompare(virDomainDiskDefPtr a,
+                         virDomainDiskDefPtr b);
 
 int virDomainSaveConfig(virConnectPtr conn,
                         const char *configDir,
diff --git a/src/qemu_driver.c b/src/qemu_driver.c
index 769f34f..9a26375 100644
--- a/src/qemu_driver.c
+++ b/src/qemu_driver.c
@@ -62,6 +62,7 @@
 #include "capabilities.h"
 #include "memory.h"
 #include "uuid.h"
+#include "domain_conf.h"
 
 /* For storing short-lived temporary files. */
 #define TEMPDIR LOCAL_STATE_DIR "/cache/libvirt"
@@ -3044,6 +3045,7 @@ static int qemudDomainAttachUsbMassstorageDevice(virDomainPtr dom, virDomainDevi
     virDomainObjPtr vm = virDomainFindByUUID(driver->domains, dom->uuid);
     int ret;
     char *cmd, *reply;
+    virDomainDiskDefPtr *dest, *prev, ptr;
 
     if (!vm) {
         qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN,
@@ -3051,6 +3053,28 @@ static int qemudDomainAttachUsbMassstorageDevice(virDomainPtr dom, virDomainDevi
         return -1;
     }
 
+    /* Find spot in domain definition where we will put the disk */
+    ptr = vm->def->disks;
+    prev = &(vm->def->disks);
+    while (ptr) {
+        if (STREQ(dev->data.disk->dst, ptr->dst)) {
+            qemudReportError(dom->conn, dom, NULL, VIR_ERR_INTERNAL_ERROR,
+                             _("duplicate disk target '%s'"),
+                             dev->data.disk->dst);
+            return -1;
+        }
+        if (virDomainDiskCompare(dev->data.disk, ptr) < 0) {
+            dest = &(ptr);
+            break;
+        }
+        prev = &(ptr->next);
+        ptr = ptr->next;
+    }
+
+    if (!ptr) {
+        dest = prev;
+    }
+
     ret = asprintf(&cmd, "usb_add disk:%s", dev->data.disk->src);
     if (ret == -1) {
         qemudReportError(dom->conn, NULL, NULL, VIR_ERR_NO_MEMORY, NULL);
@@ -3059,7 +3083,7 @@ static int qemudDomainAttachUsbMassstorageDevice(virDomainPtr dom, virDomainDevi
 
     if (qemudMonitorCommand(driver, vm, cmd, &reply) < 0) {
         qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED,
-                         "%s", _("cannot attach usb device"));
+                         "%s", _("cannot attach usb disk"));
         VIR_FREE(cmd);
         return -1;
     }
@@ -3070,11 +3094,16 @@ static int qemudDomainAttachUsbMassstorageDevice(virDomainPtr dom, virDomainDevi
     if (strstr(reply, "Could not add ")) {
         qemudReportError (dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED,
                           "%s",
-                          _("adding usb device failed"));
+                          _("adding usb disk failed"));
         VIR_FREE(reply);
         VIR_FREE(cmd);
         return -1;
     }
+
+    /* Actually update the xml */
+    dev->data.disk->next = *dest;
+    *prev = dev->data.disk;
+
     VIR_FREE(reply);
     VIR_FREE(cmd);
     return 0;
@@ -3125,6 +3154,11 @@ static int qemudDomainAttachHostDevice(virDomainPtr dom, virDomainDeviceDefPtr d
         VIR_FREE(cmd);
         return -1;
     }
+
+    /* Update xml */
+    dev->data.hostdev->next = vm->def->hostdevs;
+    vm->def->hostdevs = dev->data.hostdev;
+
     VIR_FREE(reply);
     VIR_FREE(cmd);
     return 0;
@@ -3167,7 +3201,7 @@ static int qemudDomainAttachDevice(virDomainPtr dom,
                 ret = qemudDomainAttachHostDevice(dom, dev);
     } else {
         qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_SUPPORT,
-                         "%s", _("this devicetype cannot be attached"));
+                         "%s", _("this device type cannot be attached"));
         ret = -1;
     }