[libvirt PATCH v3 19/21] api: add virNodeDeviceCreate()

This new API function provides a way to start a persistently-defined mediate device that was defined by virNodeDeviceDefineXML() (or one that was defined externally via mdevctl) Signed-off-by: Jonathon Jongsma <jjongsma(a)redhat.com&gt; --- include/libvirt/libvirt-nodedev.h | 2 + src/driver-nodedev.h | 4 ++ src/libvirt-nodedev.c | 35 +++++++++++ src/libvirt_public.syms | 1 + src/node_device/node_device_driver.c | 63 ++++++++++++++++++++ src/node_device/node_device_driver.h | 6 ++ src/node_device/node_device_udev.c | 1 + src/remote/remote_driver.c | 1 + src/remote/remote_protocol.x | 13 +++- src/remote_protocol-structs | 4 ++ tests/nodedevmdevctldata/mdevctl-create.argv | 1 + tests/nodedevmdevctltest.c | 11 +++- 12 files changed, 140 insertions(+), 2 deletions(-) create mode 100644 tests/nodedevmdevctldata/mdevctl-create.argv diff --git a/include/libvirt/libvirt-nodedev.h b/include/libvirt/libvirt-nodedev.h index d9dac97147..71626bd837 100644 --- a/include/libvirt/libvirt-nodedev.h +++ b/include/libvirt/libvirt-nodedev.h @@ -138,6 +138,8 @@ virNodeDevicePtr virNodeDeviceDefineXML(virConnectPtr conn, int virNodeDeviceUndefine(virNodeDevicePtr dev); +int virNodeDeviceCreate(virNodeDevicePtr dev); + /** * VIR_NODE_DEVICE_EVENT_CALLBACK: * diff --git a/src/driver-nodedev.h b/src/driver-nodedev.h index e18029ab48..d00dd5845c 100644 --- a/src/driver-nodedev.h +++ b/src/driver-nodedev.h @@ -82,6 +82,9 @@ typedef virNodeDevicePtr typedef int (*virDrvNodeDeviceUndefine)(virNodeDevicePtr dev); +typedef int +(*virDrvNodeDeviceCreate)(virNodeDevicePtr def); + typedef int (*virDrvConnectNodeDeviceEventRegisterAny)(virConnectPtr conn, virNodeDevicePtr dev, @@ -123,4 +126,5 @@ struct _virNodeDeviceDriver { virDrvNodeDeviceDestroy nodeDeviceDestroy; virDrvNodeDeviceDefineXML nodeDeviceDefineXML; virDrvNodeDeviceUndefine nodeDeviceUndefine; + virDrvNodeDeviceCreate nodeDeviceCreate; }; diff --git a/src/libvirt-nodedev.c b/src/libvirt-nodedev.c index 618778517b..1d13466fc1 100644 --- a/src/libvirt-nodedev.c +++ b/src/libvirt-nodedev.c @@ -843,6 +843,41 @@ virNodeDeviceUndefine(virNodeDevicePtr dev) } +/** + * virNodeDeviceCreate: + * @dev: a device object + * + * Start a defined node device: + * + * Returns 0 in case of success and -1 in case of failure. + */ +int +virNodeDeviceCreate(virNodeDevicePtr dev) +{ + VIR_DEBUG("dev=%p", dev); + + virResetLastError(); + + virCheckNodeDeviceReturn(dev, -1); + virCheckReadOnlyGoto(dev->conn->flags, error); + + if (dev->conn->nodeDeviceDriver && + dev->conn->nodeDeviceDriver->nodeDeviceCreate) { + int retval = dev->conn->nodeDeviceDriver->nodeDeviceCreate(dev); + if (retval < 0) + goto error; + + return 0; + } + + virReportUnsupportedError(); + + error: + virDispatchError(dev->conn); + return -1; +} + + /** * virConnectNodeDeviceEventRegisterAny: * @conn: pointer to the connection diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms index 16022a74bf..7c812ebb6e 100644 --- a/src/libvirt_public.syms +++ b/src/libvirt_public.syms @@ -879,6 +879,7 @@ LIBVIRT_6.10.0 { virDomainAuthorizedSSHKeysSet; virNodeDeviceDefineXML; virNodeDeviceUndefine; + virNodeDeviceCreate; } LIBVIRT_6.0.0; # .... define new API here using predicted next version number .... diff --git a/src/node_device/node_device_driver.c b/src/node_device/node_device_driver.c index e38aef0656..dc41e937cd 100644 --- a/src/node_device/node_device_driver.c +++ b/src/node_device/node_device_driver.c @@ -889,6 +889,17 @@ nodeDeviceGetMdevctlUndefineCommand(const char *uuid) } +virCommandPtr +nodeDeviceGetMdevctlCreateCommand(const char *uuid) +{ + return virCommandNewArgList(MDEVCTL, + "start", + "-u", + uuid, + NULL); + +} + static int virMdevctlStop(virNodeDeviceDefPtr def) { @@ -919,6 +930,21 @@ virMdevctlUndefine(virNodeDeviceDefPtr def) } +static int +virMdevctlCreate(virNodeDeviceDefPtr def) +{ + int status; + g_autoptr(virCommand) cmd = NULL; + + cmd = nodeDeviceGetMdevctlCreateCommand(def->caps->data.mdev.uuid); + + if (virCommandRun(cmd, &status) < 0 || status != 0) + return -1; + + return 0; +} + + virCommandPtr nodeDeviceGetMdevctlListCommand(bool defined, char **output) @@ -1225,6 +1251,43 @@ nodeDeviceUndefine(virNodeDevicePtr device) } +int nodeDeviceCreate(virNodeDevicePtr device) +{ + int ret = -1; + virNodeDeviceObjPtr obj = NULL; + virNodeDeviceDefPtr def; + + if (!(obj = nodeDeviceObjFindByName(device->name))) + return -1; + + if (virNodeDeviceObjIsActive(obj)) { + virReportError(VIR_ERR_OPERATION_INVALID, "%s", + _("Device is already active")); + goto cleanup; + } + def = virNodeDeviceObjGetDef(obj); + + if (virNodeDeviceCreateEnsureACL(device->conn, def) < 0) + goto cleanup; + + if (nodeDeviceHasCapability(def, VIR_NODE_DEV_CAP_MDEV)) { + if (virMdevctlCreate(def) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Unable to create mediated device")); + goto cleanup; + } + ret = 0; + } else { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("Unsupported device type")); + } + + cleanup: + virNodeDeviceObjEndAPI(&obj); + return ret; +} + + int nodeConnectNodeDeviceEventRegisterAny(virConnectPtr conn, virNodeDevicePtr device, diff --git a/src/node_device/node_device_driver.h b/src/node_device/node_device_driver.h index e06d62cee6..58a5958f02 100644 --- a/src/node_device/node_device_driver.h +++ b/src/node_device/node_device_driver.h @@ -150,3 +150,9 @@ nodeDeviceGenerateName(virNodeDeviceDefPtr def, const char *subsystem, const char *sysname, const char *s); + +virCommandPtr +nodeDeviceGetMdevctlCreateCommand(const char *uuid); + +int +nodeDeviceCreate(virNodeDevicePtr dev); diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c index d7521a9c18..54c9bb5f2b 100644 --- a/src/node_device/node_device_udev.c +++ b/src/node_device/node_device_udev.c @@ -2340,6 +2340,7 @@ static virNodeDeviceDriver udevNodeDeviceDriver = { .nodeDeviceDestroy = nodeDeviceDestroy, /* 0.7.3 */ .nodeDeviceDefineXML = nodeDeviceDefineXML, /* 6.5.0 */ .nodeDeviceUndefine = nodeDeviceUndefine, /* 6.5.0 */ + .nodeDeviceCreate = nodeDeviceCreate, /* 6.5.0 */ }; diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c index de569b74e5..a592fcb31d 100644 --- a/src/remote/remote_driver.c +++ b/src/remote/remote_driver.c @@ -8665,6 +8665,7 @@ static virNodeDeviceDriver node_device_driver = { .nodeDeviceNumOfCaps = remoteNodeDeviceNumOfCaps, /* 0.5.0 */ .nodeDeviceListCaps = remoteNodeDeviceListCaps, /* 0.5.0 */ .nodeDeviceCreateXML = remoteNodeDeviceCreateXML, /* 0.6.3 */ + .nodeDeviceCreate = remoteNodeDeviceCreate, /* 6.5.0 */ .nodeDeviceDefineXML = remoteNodeDeviceDefineXML, /* 6.5.0 */ .nodeDeviceUndefine = remoteNodeDeviceUndefine, /* 6.5.0 */ .nodeDeviceDestroy = remoteNodeDeviceDestroy /* 0.6.3 */ diff --git a/src/remote/remote_protocol.x b/src/remote/remote_protocol.x index 7fee7539f0..a7cf227e53 100644 --- a/src/remote/remote_protocol.x +++ b/src/remote/remote_protocol.x @@ -2155,6 +2155,10 @@ struct remote_node_device_undefine_args { remote_nonnull_string name; }; +struct remote_node_device_create_args { + remote_nonnull_string name; +}; + /* * Events Register/Deregister: @@ -6740,6 +6744,13 @@ enum remote_procedure { * @priority: high * @acl: node_device:delete */ - REMOTE_PROC_NODE_DEVICE_UNDEFINE = 427 + REMOTE_PROC_NODE_DEVICE_UNDEFINE = 427, + + /** + * @generate: both + * @priority: high + * @acl: node_device:start + */ + REMOTE_PROC_NODE_DEVICE_CREATE = 428 }; diff --git a/src/remote_protocol-structs b/src/remote_protocol-structs index 6d136bdb66..0f35efc5b3 100644 --- a/src/remote_protocol-structs +++ b/src/remote_protocol-structs @@ -1610,6 +1610,9 @@ struct remote_node_device_define_xml_ret { struct remote_node_device_undefine_args { remote_nonnull_string name; }; +struct remote_node_device_create_args { + remote_nonnull_string name; +}; struct remote_connect_domain_event_register_ret { int cb_registered; }; @@ -3600,4 +3603,5 @@ enum remote_procedure { REMOTE_PROC_DOMAIN_AUTHORIZED_SSH_KEYS_SET = 425, REMOTE_PROC_NODE_DEVICE_DEFINE_XML = 426, REMOTE_PROC_NODE_DEVICE_UNDEFINE = 427, + REMOTE_PROC_NODE_DEVICE_CREATE = 428, }; diff --git a/tests/nodedevmdevctldata/mdevctl-create.argv b/tests/nodedevmdevctldata/mdevctl-create.argv new file mode 100644 index 0000000000..802109340c --- /dev/null +++ b/tests/nodedevmdevctldata/mdevctl-create.argv @@ -0,0 +1 @@ +$MDEVCTL_BINARY$ start -u 8a05ad83-3472-497d-8631-8142f31460e8 diff --git a/tests/nodedevmdevctltest.c b/tests/nodedevmdevctltest.c index 753cfd273e..bc0b94f441 100644 --- a/tests/nodedevmdevctltest.c +++ b/tests/nodedevmdevctltest.c @@ -14,7 +14,8 @@ typedef enum { MDEVCTL_CMD_START, MDEVCTL_CMD_STOP, MDEVCTL_CMD_DEFINE, - MDEVCTL_CMD_UNDEFINE + MDEVCTL_CMD_UNDEFINE, + MDEVCTL_CMD_CREATE, } MdevctlCmd; struct startTestInfo { @@ -186,6 +187,9 @@ testMdevctlUuidCommandHelper(const void *data) } else if (info->command == MDEVCTL_CMD_UNDEFINE) { cmd = "undefine"; func = nodeDeviceGetMdevctlUndefineCommand; + }else if (info->command == MDEVCTL_CMD_CREATE) { + cmd = "create"; + func = nodeDeviceGetMdevctlCreateCommand; } else { return -1; } @@ -426,6 +430,9 @@ mymain(void) #define DO_TEST_UNDEFINE(uuid) \ DO_TEST_UUID_COMMAND_FULL("mdevctl undefine " uuid, uuid, MDEVCTL_CMD_UNDEFINE) +#define DO_TEST_CREATE(uuid) \ + DO_TEST_UUID_COMMAND_FULL("mdevctl create " uuid, uuid, MDEVCTL_CMD_CREATE) + #define DO_TEST_LIST_DEFINED() \ DO_TEST_FULL("mdevctl list --defined", testMdevctlListDefined, NULL) @@ -450,6 +457,8 @@ mymain(void) DO_TEST_UNDEFINE("d76a6b78-45ed-4149-a325-005f9abc5281"); + DO_TEST_CREATE("8a05ad83-3472-497d-8631-8142f31460e8"); + done: nodedevTestDriverFree(driver); -- 2.26.2