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Include OS driver name (if any) in device XML for nodedev driver
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12
ChangeLog
12
ChangeLog
@ -1,6 +1,16 @@
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Thu Jun 12 13:06:42 BST 2009 Daniel P. Berrange <berrange@redhat.com>
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Improve error reporting for virConnecOpen URIs
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Include OS driver name (if any) in device XML
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* src/node_device.c: Refresh OS driver when generating XML,
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and include impl for Linux sysfs
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* src/noe_device_conf.c, src/node_device_conf.h: Add field
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for OS driver name to config
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* src/node_device_hal.c: Record sysfs path to be used for
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driver name fetching later.
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Thu Jun 12 13:06:42 BST 2009 Daniel P. Berrange <berrange@redhat.com>
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Improve error reporting for virConnectOpen URIs
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* src/lxc_driver.c, src/openvz_driver.c, src/qemu_driver.c,
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src/uml_driver.c, src/xen_unified.c: Always return ACCEPT
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or ERROR for URIs without hostname set, but with the driver's
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@ -48,6 +48,60 @@ static int dev_has_cap(const virNodeDeviceObjPtr dev, const char *cap)
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return 0;
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}
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#ifdef __linux__
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static int update_driver_name(virConnectPtr conn,
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virNodeDeviceObjPtr dev)
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{
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char *driver_link = NULL;
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char devpath[PATH_MAX];
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char *p;
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int ret = -1;
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int n;
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VIR_FREE(dev->def->driver);
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if (virAsprintf(&driver_link, "%s/driver", dev->devicePath) < 0) {
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virReportOOMError(conn);
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goto cleanup;
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}
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/* Some devices don't have an explicit driver, so just return
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without a name */
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if (access(driver_link, R_OK) < 0) {
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ret = 0;
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goto cleanup;
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}
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if ((n = readlink(driver_link, devpath, sizeof devpath)) < 0) {
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virReportSystemError(conn, errno,
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_("cannot resolve driver link %s"), driver_link);
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goto cleanup;
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}
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devpath[n] = '\0';
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p = strrchr(devpath, '/');
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if (p) {
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dev->def->driver = strdup(p+1);
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if (!dev->def->driver) {
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virReportOOMError(conn);
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goto cleanup;
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}
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}
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ret = 0;
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cleanup:
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VIR_FREE(driver_link);
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return ret;
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}
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#else
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/* XXX: Implement me for non-linux */
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static int update_driver_name(virConnectPtr conn ATTRIBUTE_UNUSED,
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virNodeDeviceObjPtr dev ATTRIBUTE_UNUSED)
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{
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return 0;
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}
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#endif
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void nodeDeviceLock(virDeviceMonitorStatePtr driver)
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{
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@ -197,6 +251,7 @@ static char *nodeDeviceDumpXML(virNodeDevicePtr dev,
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goto cleanup;
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}
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update_driver_name(dev->conn, obj);
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ret = virNodeDeviceDefFormat(dev->conn, obj->def);
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cleanup:
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@ -106,6 +106,7 @@ void virNodeDeviceDefFree(virNodeDeviceDefPtr def)
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VIR_FREE(def->name);
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VIR_FREE(def->parent);
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VIR_FREE(def->driver);
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caps = def->caps;
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while (caps) {
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@ -122,6 +123,7 @@ void virNodeDeviceObjFree(virNodeDeviceObjPtr dev)
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if (!dev)
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return;
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VIR_FREE(dev->devicePath);
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virNodeDeviceDefFree(dev->def);
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if (dev->privateFree)
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(*dev->privateFree)(dev->privateData);
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@ -219,6 +221,11 @@ char *virNodeDeviceDefFormat(virConnectPtr conn,
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if (def->parent)
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virBufferEscapeString(&buf, " <parent>%s</parent>\n", def->parent);
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if (def->driver) {
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virBufferAddLit(&buf, " <driver>\n");
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virBufferEscapeString(&buf, " <name>%s</name>\n", def->driver);
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virBufferAddLit(&buf, " </driver>\n");
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}
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for (caps = def->caps; caps; caps = caps->next) {
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char uuidstr[VIR_UUID_STRING_BUFLEN];
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@ -156,6 +156,7 @@ typedef virNodeDeviceDef *virNodeDeviceDefPtr;
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struct _virNodeDeviceDef {
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char *name; /* device name (unique on node) */
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char *parent; /* optional parent device name */
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char *driver; /* optional driver name */
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virNodeDevCapsDefPtr caps; /* optional device capabilities */
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};
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@ -165,6 +166,7 @@ typedef virNodeDeviceObj *virNodeDeviceObjPtr;
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struct _virNodeDeviceObj {
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virMutex lock;
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char *devicePath; /* OS specific path to device metadat, eg sysfs */
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virNodeDeviceDefPtr def; /* device definition */
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void *privateData; /* driver-specific private data */
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void (*privateFree)(void *data); /* destructor for private data */
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@ -429,6 +429,7 @@ static void dev_create(const char *udi)
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const char *name = hal_name(udi);
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int rv;
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char *privData = strdup(udi);
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char *devicePath = NULL;
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if (!privData)
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return;
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@ -455,15 +456,22 @@ static void dev_create(const char *udi)
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if (def->caps == NULL)
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goto cleanup;
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/* Some devices don't have a path in sysfs, so ignore failure */
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get_str_prop(ctx, udi, "linux.sysfs_path", &devicePath);
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dev = virNodeDeviceAssignDef(NULL,
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&driverState->devs,
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def);
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if (!dev)
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if (!dev) {
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VIR_FREE(devicePath);
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goto failure;
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}
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dev->privateData = privData;
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dev->privateFree = free_udi;
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dev->devicePath = devicePath;
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virNodeDeviceObjUnlock(dev);
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nodeDeviceUnlock(driverState);
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