Re: [libvirt PATCH 2/7] nodedev: implement virNodeDevice(Get|Set)Autostart()

Implement autostart functionality for mediated devices. Signed-off-by: Jonathon Jongsma <jjongsma(a)redhat.com&gt; --- src/conf/virnodedeviceobj.c | 16 ++++ src/conf/virnodedeviceobj.h | 6 ++ src/libvirt_private.syms | 2 + src/node_device/node_device_driver.c | 116 +++++++++++++++++++++++++++ src/node_device/node_device_driver.h | 13 +++ src/node_device/node_device_udev.c | 19 ++++- 6 files changed, 171 insertions(+), 1 deletion(-) diff --git a/src/conf/virnodedeviceobj.c b/src/conf/virnodedeviceobj.c index b213592b56..deee796440 100644 --- a/src/conf/virnodedeviceobj.c +++ b/src/conf/virnodedeviceobj.c @@ -41,6 +41,7 @@ struct _virNodeDeviceObj { used by testdriver */ bool active; bool persistent; + bool autostart; }; struct _virNodeDeviceObjList { @@ -1026,6 +1027,21 @@ virNodeDeviceObjSetPersistent(virNodeDeviceObj *obj, } +bool +virNodeDeviceObjIsAutostart(virNodeDeviceObj *obj) +{ + return obj->autostart; +} + + +void +virNodeDeviceObjSetAutostart(virNodeDeviceObj *obj, + bool autostart) +{ + obj->autostart = autostart; +} + + struct virNodeDeviceObjListRemoveHelperData { virNodeDeviceObjListRemoveIterator callback; diff --git a/src/conf/virnodedeviceobj.h b/src/conf/virnodedeviceobj.h index 7353e4619b..78188be2a2 100644 --- a/src/conf/virnodedeviceobj.h +++ b/src/conf/virnodedeviceobj.h @@ -135,6 +135,12 @@ virNodeDeviceObjIsPersistent(virNodeDeviceObj *obj); void virNodeDeviceObjSetPersistent(virNodeDeviceObj *obj, bool persistent); +bool +virNodeDeviceObjIsAutostart(virNodeDeviceObj *obj); + +void +virNodeDeviceObjSetAutostart(virNodeDeviceObj *obj, + bool autostart); typedef bool (*virNodeDeviceObjListRemoveIterator)(virNodeDeviceObj *obj, const void *opaque); diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 0ced2a7990..dd46fe8750 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -1278,6 +1278,7 @@ virNetworkPortDefSaveStatus; virNodeDeviceObjEndAPI; virNodeDeviceObjGetDef; virNodeDeviceObjIsActive; +virNodeDeviceObjIsAutostart; virNodeDeviceObjIsPersistent; virNodeDeviceObjListAssignDef; virNodeDeviceObjListExport; @@ -1294,6 +1295,7 @@ virNodeDeviceObjListNumOfDevices; virNodeDeviceObjListRemove; virNodeDeviceObjListRemoveLocked; virNodeDeviceObjSetActive; +virNodeDeviceObjSetAutostart; virNodeDeviceObjSetPersistent; diff --git a/src/node_device/node_device_driver.c b/src/node_device/node_device_driver.c index 8a0a2c3847..9ebe609aa4 100644 --- a/src/node_device/node_device_driver.c +++ b/src/node_device/node_device_driver.c @@ -962,6 +962,46 @@ virMdevctlStart(virNodeDeviceDef *def, char **errmsg) } +/* gets a virCommand object that executes a mdevctl command to set the + * 'autostart' property of the device to the specified value + */ +virCommand* +nodeDeviceGetMdevctlSetAutostartCommand(virNodeDeviceDef *def, + bool autostart, + char **errmsg) +{ + virCommand *cmd = virCommandNewArgList(MDEVCTL, + "modify", + "--uuid", + def->caps->data.mdev.uuid, + NULL); + + if (autostart) + virCommandAddArg(cmd, "--auto"); + else + virCommandAddArg(cmd, "--manual"); + + virCommandSetErrorBuffer(cmd, errmsg); + + return cmd; +} + + +static int +virMdevctlSetAutostart(virNodeDeviceDef *def, bool autostart, char **errmsg) +{ + int status; + g_autoptr(virCommand) cmd = NULL; + + cmd = nodeDeviceGetMdevctlSetAutostartCommand(def, autostart, errmsg); + + if (virCommandRun(cmd, &status) < 0 || status != 0) + return -1; + + return 0; +} + + virCommand* nodeDeviceGetMdevctlListCommand(bool defined, char **output, @@ -1688,3 +1728,79 @@ nodeDeviceDefCopyFromMdevctl(virNodeDeviceDef *dst, return ret; } + + +int +nodeDeviceSetAutostart(virNodeDevice *device, + int autostart) +{ + int ret = -1; + virNodeDeviceObj *obj = NULL; + virNodeDeviceDef *def = NULL; + + if (nodeDeviceInitWait() < 0) + return -1; + + if (!(obj = nodeDeviceObjFindByName(device->name))) + return -1; + def = virNodeDeviceObjGetDef(obj); + + if (virNodeDeviceSetAutostartEnsureACL(device->conn, def) < 0) + goto cleanup; + + if (nodeDeviceHasCapability(def, VIR_NODE_DEV_CAP_MDEV)) { + if (!virNodeDeviceObjIsPersistent(obj)) { + virReportError(VIR_ERR_OPERATION_INVALID, + "%s", _("cannot set autostart for transient device")); + goto cleanup; + } + + if (autostart != virNodeDeviceObjIsAutostart(obj)) { + g_autofree char *errmsg = NULL; + + if (virMdevctlSetAutostart(def, autostart, &errmsg) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Unable to set autostart on '%s': %s"), + def->name, + errmsg && errmsg[0] != '\0' ? errmsg : _("Unknown Error")); + goto cleanup; + } + virNodeDeviceObjSetAutostart(obj, autostart); + } + ret = 0; + } else { + virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", + _("Unsupported device type")); + } + + cleanup: + virNodeDeviceObjEndAPI(&obj); + return ret; +} + + +int +nodeDeviceGetAutostart(virNodeDevice *device, + int *autostart) +{ + virNodeDeviceObj *obj = NULL; + virNodeDeviceDef *def = NULL; + int ret = -1; + + if (nodeDeviceInitWait() < 0) + return -1; + + if (!(obj = nodeDeviceObjFindByName(device->name))) + return -1; + def = virNodeDeviceObjGetDef(obj); + + if (virNodeDeviceGetAutostartEnsureACL(device->conn, def) < 0) + goto cleanup; + + *autostart = virNodeDeviceObjIsAutostart(obj); + ret = 0; + + cleanup: + virNodeDeviceObjEndAPI(&obj); + return ret; +} diff --git a/src/node_device/node_device_driver.h b/src/node_device/node_device_driver.h index edd763f0e4..d178a18180 100644 --- a/src/node_device/node_device_driver.h +++ b/src/node_device/node_device_driver.h @@ -171,3 +171,16 @@ bool nodeDeviceDefCopyFromMdevctl(virNodeDeviceDef *dst, int nodeDeviceCreate(virNodeDevice *dev, unsigned int flags); + +int +nodeDeviceSetAutostart(virNodeDevice *dev, + int autostart); + +int +nodeDeviceGetAutostart(virNodeDevice *dev, + int *autostart); + +virCommand* +nodeDeviceGetMdevctlSetAutostartCommand(virNodeDeviceDef *def, + bool autostart, + char **errmsg); diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c index f99578414d..21273083a6 100644 --- a/src/node_device/node_device_udev.c +++ b/src/node_device/node_device_udev.c @@ -1488,6 +1488,8 @@ udevAddOneDevice(struct udev_device *device) bool new_device = true; int ret = -1; bool was_persistent = false; + bool autostart = true; + bool is_mdev; def = g_new0(virNodeDeviceDef, 1); @@ -1509,17 +1511,28 @@ udevAddOneDevice(struct udev_device *device) if (udevSetParent(device, def) != 0) goto cleanup; + is_mdev = def->caps->data.type == VIR_NODE_DEV_CAP_MDEV; + if ((obj = virNodeDeviceObjListFindByName(driver->devs, def->name))) { objdef = virNodeDeviceObjGetDef(obj); - if (def->caps->data.type == VIR_NODE_DEV_CAP_MDEV) + if (is_mdev) nodeDeviceDefCopyFromMdevctl(def, objdef); was_persistent = virNodeDeviceObjIsPersistent(obj); + autostart = virNodeDeviceObjIsAutostart(obj); + /* If the device was defined by mdevctl and was never instantiated, it * won't have a sysfs path. We need to emit a CREATED event... */ new_device = (objdef->sysfs_path == NULL); virNodeDeviceObjEndAPI(&obj); + } else { + /* All non-mdev devices report themselves as autostart since they + * should still be present and active after a reboot unless the device + * is removed from the host. Mediated devices can only be persistent if + * they are in already in the device list from parsing the mdevctl + * output. */ + autostart = !is_mdev;