Support virDomainOpenConsole with QEMU

This provides an implementation of the virDomainOpenConsole
API with the QEMU driver. For the streams code, this reuses
most of the code previously added for the tunnelled migration
streams since it is generic.

* src/qemu/qemu_driver.c: Support virDomainOpenConsole

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 5205a597ea64ae5fdcb577f41bef2c4880a81185..1903a8dbefed5ba3fbba1b92a2dee2374bc20599 100644 (file)
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -13051,6 +13051,82 @@ cleanup:
     return ret;
 }
 
+
+static int
+qemuDomainOpenConsole(virDomainPtr dom,
+                      const char *devname,
+                      virStreamPtr st,
+                      unsigned int flags)
+{
+    struct qemud_driver *driver = dom->conn->privateData;
+    virDomainObjPtr vm = NULL;
+    char uuidstr[VIR_UUID_STRING_BUFLEN];
+    int ret = -1;
+    int i;
+    virDomainChrDefPtr chr = NULL;
+
+    virCheckFlags(0, -1);
+
+    qemuDriverLock(driver);
+    virUUIDFormat(dom->uuid, uuidstr);
+    vm = virDomainFindByUUID(&driver->domains, dom->uuid);
+    if (!vm) {
+        qemuReportError(VIR_ERR_NO_DOMAIN,
+                        _("no domain with matching uuid '%s'"), uuidstr);
+        goto cleanup;
+    }
+
+    if (!virDomainObjIsActive(vm)) {
+        qemuReportError(VIR_ERR_OPERATION_INVALID,
+                        "%s", _("domain is not running"));
+        goto cleanup;
+    }
+
+    if (devname) {
+        if (vm->def->console &&
+            STREQ(devname, vm->def->console->info.alias))
+            chr = vm->def->console;
+        for (i = 0 ; !chr && i < vm->def->nserials ; i++) {
+            if (STREQ(devname, vm->def->serials[i]->info.alias))
+                chr = vm->def->serials[i];
+        }
+        for (i = 0 ; !chr && i < vm->def->nparallels ; i++) {
+            if (STREQ(devname, vm->def->parallels[i]->info.alias))
+                chr = vm->def->parallels[i];
+        }
+    } else {
+        if (vm->def->console)
+            chr = vm->def->console;
+        else if (vm->def->nserials)
+            chr = vm->def->serials[0];
+    }
+
+    if (!chr) {
+        qemuReportError(VIR_ERR_INTERNAL_ERROR,
+                        _("cannot find character device %s"),
+                        NULLSTR(devname));
+        goto cleanup;
+    }
+
+    if (chr->type != VIR_DOMAIN_CHR_TYPE_PTY) {
+        qemuReportError(VIR_ERR_INTERNAL_ERROR,
+                        _("character device %s is not using a PTY"),
+                        NULLSTR(devname));
+        goto cleanup;
+    }
+
+    if (virFDStreamOpenFile(st, chr->data.file.path, O_RDWR) < 0)
+        goto cleanup;
+
+    ret = 0;
+cleanup:
+    if (vm)
+        virDomainObjUnlock(vm);
+    qemuDriverUnlock(driver);
+    return ret;
+}
+
+
 static virDriver qemuDriver = {
     VIR_DRV_QEMU,
     "QEMU",
@@ -13155,7 +13231,7 @@ static virDriver qemuDriver = {
     qemuDomainMonitorCommand, /* qemuDomainMonitorCommand */
     qemuDomainSetMemoryParameters, /* domainSetMemoryParameters */
     qemuDomainGetMemoryParameters, /* domainGetMemoryParameters */
-    NULL, /* domainOpenConsole */
+    qemuDomainOpenConsole, /* domainOpenConsole */
 };