[libvirt PATCH v3 16/21] api: add virNodeDeviceUndefine()
Jonathon Jongsma
jjongsma at redhat.com
Thu Dec 24 14:14:40 UTC 2020
This interface allows you to undefine a persistently defined (but
inactive) mediated devices. It is implemented via 'mdevctl'
Signed-off-by: Jonathon Jongsma <jjongsma at redhat.com>
---
include/libvirt/libvirt-nodedev.h | 2 +
src/access/viraccessperm.c | 2 +-
src/access/viraccessperm.h | 6 +++
src/driver-nodedev.h | 4 ++
src/libvirt-nodedev.c | 36 +++++++++++++++
src/libvirt_public.syms | 1 +
src/node_device/node_device_driver.c | 67 ++++++++++++++++++++++++++++
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 | 14 +++++-
src/remote_protocol-structs | 4 ++
tests/nodedevmdevctltest.c | 8 ++++
13 files changed, 150 insertions(+), 2 deletions(-)
diff --git a/include/libvirt/libvirt-nodedev.h b/include/libvirt/libvirt-nodedev.h
index 3e57e9522a..d9dac97147 100644
--- a/include/libvirt/libvirt-nodedev.h
+++ b/include/libvirt/libvirt-nodedev.h
@@ -136,6 +136,8 @@ virNodeDevicePtr virNodeDeviceDefineXML(virConnectPtr conn,
const char *xmlDesc,
unsigned int flags);
+int virNodeDeviceUndefine(virNodeDevicePtr dev);
+
/**
* VIR_NODE_DEVICE_EVENT_CALLBACK:
*
diff --git a/src/access/viraccessperm.c b/src/access/viraccessperm.c
index 33db7752b6..d4a0c98b9b 100644
--- a/src/access/viraccessperm.c
+++ b/src/access/viraccessperm.c
@@ -70,7 +70,7 @@ VIR_ENUM_IMPL(virAccessPermNodeDevice,
VIR_ACCESS_PERM_NODE_DEVICE_LAST,
"getattr", "read", "write",
"start", "stop",
- "detach",
+ "detach", "delete",
);
VIR_ENUM_IMPL(virAccessPermNWFilter,
diff --git a/src/access/viraccessperm.h b/src/access/viraccessperm.h
index 42996b9741..051246a7b6 100644
--- a/src/access/viraccessperm.h
+++ b/src/access/viraccessperm.h
@@ -500,6 +500,12 @@ typedef enum {
*/
VIR_ACCESS_PERM_NODE_DEVICE_DETACH,
+ /**
+ * @desc: Delete node device
+ * @message: Deleting node device driver requires authorization
+ */
+ VIR_ACCESS_PERM_NODE_DEVICE_DELETE,
+
VIR_ACCESS_PERM_NODE_DEVICE_LAST
} virAccessPermNodeDevice;
diff --git a/src/driver-nodedev.h b/src/driver-nodedev.h
index 16d787f3fc..e18029ab48 100644
--- a/src/driver-nodedev.h
+++ b/src/driver-nodedev.h
@@ -79,6 +79,9 @@ typedef virNodeDevicePtr
const char *xmlDesc,
unsigned int flags);
+typedef int
+(*virDrvNodeDeviceUndefine)(virNodeDevicePtr dev);
+
typedef int
(*virDrvConnectNodeDeviceEventRegisterAny)(virConnectPtr conn,
virNodeDevicePtr dev,
@@ -119,4 +122,5 @@ struct _virNodeDeviceDriver {
virDrvNodeDeviceCreateXML nodeDeviceCreateXML;
virDrvNodeDeviceDestroy nodeDeviceDestroy;
virDrvNodeDeviceDefineXML nodeDeviceDefineXML;
+ virDrvNodeDeviceUndefine nodeDeviceUndefine;
};
diff --git a/src/libvirt-nodedev.c b/src/libvirt-nodedev.c
index 15eb70218a..618778517b 100644
--- a/src/libvirt-nodedev.c
+++ b/src/libvirt-nodedev.c
@@ -807,6 +807,42 @@ virNodeDeviceDefineXML(virConnectPtr conn,
}
+/**
+ * virNodeDeviceUndefine:
+ * @dev: a device object
+ *
+ * Undefine the device object. The virtual device is removed from the host
+ * operating system. This function may require privileged access.
+ *
+ * Returns 0 in case of success and -1 in case of failure.
+ */
+int
+virNodeDeviceUndefine(virNodeDevicePtr dev)
+{
+ VIR_DEBUG("dev=%p", dev);
+
+ virResetLastError();
+
+ virCheckNodeDeviceReturn(dev, -1);
+ virCheckReadOnlyGoto(dev->conn->flags, error);
+
+ if (dev->conn->nodeDeviceDriver &&
+ dev->conn->nodeDeviceDriver->nodeDeviceUndefine) {
+ int retval = dev->conn->nodeDeviceDriver->nodeDeviceUndefine(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 8fae4352ff..16022a74bf 100644
--- a/src/libvirt_public.syms
+++ b/src/libvirt_public.syms
@@ -878,6 +878,7 @@ LIBVIRT_6.10.0 {
virDomainAuthorizedSSHKeysGet;
virDomainAuthorizedSSHKeysSet;
virNodeDeviceDefineXML;
+ virNodeDeviceUndefine;
} 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 4fbe8743b4..e38aef0656 100644
--- a/src/node_device/node_device_driver.c
+++ b/src/node_device/node_device_driver.c
@@ -878,6 +878,17 @@ nodeDeviceGetMdevctlStopCommand(const char *uuid)
}
+virCommandPtr
+nodeDeviceGetMdevctlUndefineCommand(const char *uuid)
+{
+ return virCommandNewArgList(MDEVCTL,
+ "undefine",
+ "-u",
+ uuid,
+ NULL);
+
+}
+
static int
virMdevctlStop(virNodeDeviceDefPtr def)
{
@@ -893,6 +904,21 @@ virMdevctlStop(virNodeDeviceDefPtr def)
}
+static int
+virMdevctlUndefine(virNodeDeviceDefPtr def)
+{
+ int status;
+ g_autoptr(virCommand) cmd = NULL;
+
+ cmd = nodeDeviceGetMdevctlUndefineCommand(def->caps->data.mdev.uuid);
+
+ if (virCommandRun(cmd, &status) < 0 || status != 0)
+ return -1;
+
+ return 0;
+}
+
+
virCommandPtr
nodeDeviceGetMdevctlListCommand(bool defined,
char **output)
@@ -1157,6 +1183,47 @@ nodeDeviceDefineXML(virConnectPtr conn,
}
+int
+nodeDeviceUndefine(virNodeDevicePtr device)
+{
+ int ret = -1;
+ virNodeDeviceObjPtr obj = NULL;
+ virNodeDeviceDefPtr def;
+
+ if (nodeDeviceWaitInit() < 0)
+ return -1;
+
+ if (!(obj = nodeDeviceObjFindByName(device->name)))
+ return -1;
+ def = virNodeDeviceObjGetDef(obj);
+
+ if (virNodeDeviceUndefineEnsureACL(device->conn, def) < 0)
+ goto cleanup;
+
+ if (virNodeDeviceObjIsActive(obj)) {
+ virReportError(VIR_ERR_OPERATION_INVALID,
+ _("node device '%s' is still active"),
+ def->name);
+ goto cleanup;
+ }
+
+ if (nodeDeviceHasCapability(def, VIR_NODE_DEV_CAP_MDEV)) {
+ if (virMdevctlUndefine(def) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Unable to undefine 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,
diff --git a/src/node_device/node_device_driver.h b/src/node_device/node_device_driver.h
index e58bb0f124..e06d62cee6 100644
--- a/src/node_device/node_device_driver.h
+++ b/src/node_device/node_device_driver.h
@@ -107,6 +107,9 @@ nodeDeviceDefineXML(virConnectPtr conn,
const char *xmlDesc,
unsigned int flags);
+int
+nodeDeviceUndefine(virNodeDevicePtr dev);
+
int
nodeConnectNodeDeviceEventRegisterAny(virConnectPtr conn,
virNodeDevicePtr dev,
@@ -129,6 +132,9 @@ nodeDeviceGetMdevctlDefineCommand(virNodeDeviceDefPtr def,
virCommandPtr
nodeDeviceGetMdevctlStopCommand(const char *uuid);
+virCommandPtr
+nodeDeviceGetMdevctlUndefineCommand(const char *uuid);
+
virCommandPtr
nodeDeviceGetMdevctlListCommand(bool defined, char **output);
diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c
index 2532c3189e..d7521a9c18 100644
--- a/src/node_device/node_device_udev.c
+++ b/src/node_device/node_device_udev.c
@@ -2339,6 +2339,7 @@ static virNodeDeviceDriver udevNodeDeviceDriver = {
.nodeDeviceCreateXML = nodeDeviceCreateXML, /* 0.7.3 */
.nodeDeviceDestroy = nodeDeviceDestroy, /* 0.7.3 */
.nodeDeviceDefineXML = nodeDeviceDefineXML, /* 6.5.0 */
+ .nodeDeviceUndefine = nodeDeviceUndefine, /* 6.5.0 */
};
diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c
index f826b6f73e..de569b74e5 100644
--- a/src/remote/remote_driver.c
+++ b/src/remote/remote_driver.c
@@ -8666,6 +8666,7 @@ static virNodeDeviceDriver node_device_driver = {
.nodeDeviceListCaps = remoteNodeDeviceListCaps, /* 0.5.0 */
.nodeDeviceCreateXML = remoteNodeDeviceCreateXML, /* 0.6.3 */
.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 d2250502b4..7fee7539f0 100644
--- a/src/remote/remote_protocol.x
+++ b/src/remote/remote_protocol.x
@@ -2151,6 +2151,10 @@ struct remote_node_device_define_xml_ret {
remote_nonnull_node_device dev;
};
+struct remote_node_device_undefine_args {
+ remote_nonnull_string name;
+};
+
/*
* Events Register/Deregister:
@@ -6729,5 +6733,13 @@ enum remote_procedure {
* @generate: both
* @acl: node_device:write
*/
- REMOTE_PROC_NODE_DEVICE_DEFINE_XML = 426
+ REMOTE_PROC_NODE_DEVICE_DEFINE_XML = 426,
+
+ /**
+ * @generate: both
+ * @priority: high
+ * @acl: node_device:delete
+ */
+ REMOTE_PROC_NODE_DEVICE_UNDEFINE = 427
+
};
diff --git a/src/remote_protocol-structs b/src/remote_protocol-structs
index 565c1673f1..6d136bdb66 100644
--- a/src/remote_protocol-structs
+++ b/src/remote_protocol-structs
@@ -1607,6 +1607,9 @@ struct remote_node_device_define_xml_args {
struct remote_node_device_define_xml_ret {
remote_nonnull_node_device dev;
};
+struct remote_node_device_undefine_args {
+ remote_nonnull_string name;
+};
struct remote_connect_domain_event_register_ret {
int cb_registered;
};
@@ -3596,4 +3599,5 @@ enum remote_procedure {
REMOTE_PROC_DOMAIN_AUTHORIZED_SSH_KEYS_GET = 424,
REMOTE_PROC_DOMAIN_AUTHORIZED_SSH_KEYS_SET = 425,
REMOTE_PROC_NODE_DEVICE_DEFINE_XML = 426,
+ REMOTE_PROC_NODE_DEVICE_UNDEFINE = 427,
};
diff --git a/tests/nodedevmdevctltest.c b/tests/nodedevmdevctltest.c
index 56265cfaea..753cfd273e 100644
--- a/tests/nodedevmdevctltest.c
+++ b/tests/nodedevmdevctltest.c
@@ -183,6 +183,9 @@ testMdevctlUuidCommandHelper(const void *data)
if (info->command == MDEVCTL_CMD_STOP) {
cmd = "stop";
func = nodeDeviceGetMdevctlStopCommand;
+ } else if (info->command == MDEVCTL_CMD_UNDEFINE) {
+ cmd = "undefine";
+ func = nodeDeviceGetMdevctlUndefineCommand;
} else {
return -1;
}
@@ -420,6 +423,9 @@ mymain(void)
#define DO_TEST_STOP(uuid) \
DO_TEST_UUID_COMMAND_FULL("mdevctl stop " uuid, uuid, MDEVCTL_CMD_STOP)
+#define DO_TEST_UNDEFINE(uuid) \
+ DO_TEST_UUID_COMMAND_FULL("mdevctl undefine " uuid, uuid, MDEVCTL_CMD_UNDEFINE)
+
#define DO_TEST_LIST_DEFINED() \
DO_TEST_FULL("mdevctl list --defined", testMdevctlListDefined, NULL)
@@ -442,6 +448,8 @@ mymain(void)
DO_TEST_DEFINE("mdev_fedc4916_1ca8_49ac_b176_871d16c13076");
DO_TEST_DEFINE("mdev_d2441d39_495e_4243_ad9f_beb3f14c23d9");
+ DO_TEST_UNDEFINE("d76a6b78-45ed-4149-a325-005f9abc5281");
+
done:
nodedevTestDriverFree(driver);
--
2.26.2
More information about the libvir-list
mailing list