1 /**
2 * collectd - src/libvirt.c
3 * Copyright (C) 2006-2008 Red Hat Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the license is applicable.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 *
18 * Authors:
19 * Richard W.M. Jones <rjones@redhat.com>
20 **/
22 #include "collectd.h"
23 #include "common.h"
24 #include "plugin.h"
25 #include "configfile.h"
26 #include "utils_ignorelist.h"
27 #include "utils_complain.h"
29 #include <libvirt/libvirt.h>
30 #include <libvirt/virterror.h>
31 #include <libxml/parser.h>
32 #include <libxml/tree.h>
33 #include <libxml/xpath.h>
35 static const char *config_keys[] = {
36 "Connection",
38 "RefreshInterval",
40 "Domain",
41 "BlockDevice",
42 "InterfaceDevice",
43 "IgnoreSelected",
45 "HostnameFormat",
46 "InterfaceFormat",
48 NULL
49 };
50 #define NR_CONFIG_KEYS ((sizeof config_keys / sizeof config_keys[0]) - 1)
52 /* Connection. */
53 static virConnectPtr conn = 0;
54 static char *conn_string = NULL;
55 static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
57 /* Seconds between list refreshes, 0 disables completely. */
58 static int interval = 60;
60 /* List of domains, if specified. */
61 static ignorelist_t *il_domains = NULL;
62 /* List of block devices, if specified. */
63 static ignorelist_t *il_block_devices = NULL;
64 /* List of network interface devices, if specified. */
65 static ignorelist_t *il_interface_devices = NULL;
67 static int ignore_device_match (ignorelist_t *,
68 const char *domname, const char *devpath);
70 /* Actual list of domains found on last refresh. */
71 static virDomainPtr *domains = NULL;
72 static int nr_domains = 0;
74 static void free_domains (void);
75 static int add_domain (virDomainPtr dom);
77 /* Actual list of block devices found on last refresh. */
78 struct block_device {
79 virDomainPtr dom; /* domain */
80 char *path; /* name of block device */
81 };
83 static struct block_device *block_devices = NULL;
84 static int nr_block_devices = 0;
86 static void free_block_devices (void);
87 static int add_block_device (virDomainPtr dom, const char *path);
89 /* Actual list of network interfaces found on last refresh. */
90 struct interface_device {
91 virDomainPtr dom; /* domain */
92 char *path; /* name of interface device */
93 char *address; /* mac address of interface device */
94 };
96 static struct interface_device *interface_devices = NULL;
97 static int nr_interface_devices = 0;
99 static void free_interface_devices (void);
100 static int add_interface_device (virDomainPtr dom, const char *path, const char *address);
102 /* HostnameFormat. */
103 #define HF_MAX_FIELDS 3
105 enum hf_field {
106 hf_none = 0,
107 hf_hostname,
108 hf_name,
109 hf_uuid
110 };
112 static enum hf_field hostname_format[HF_MAX_FIELDS] =
113 { hf_name };
115 /* InterfaceFormat. */
116 enum if_field {
117 if_address,
118 if_name
119 };
121 static enum if_field interface_format = if_name;
123 /* Time that we last refreshed. */
124 static time_t last_refresh = (time_t) 0;
126 static int refresh_lists (void);
128 /* ERROR(...) macro for virterrors. */
129 #define VIRT_ERROR(conn,s) do { \
130 virErrorPtr err; \
131 err = (conn) ? virConnGetLastError ((conn)) : virGetLastError (); \
132 if (err) ERROR ("%s: %s", (s), err->message); \
133 } while(0)
135 static void
136 init_value_list (value_list_t *vl, virDomainPtr dom)
137 {
138 int i, n;
139 const char *name;
140 char uuid[VIR_UUID_STRING_BUFLEN];
142 sstrncpy (vl->plugin, "libvirt", sizeof (vl->plugin));
144 vl->host[0] = '\0';
146 /* Construct the hostname field according to HostnameFormat. */
147 for (i = 0; i < HF_MAX_FIELDS; ++i) {
148 if (hostname_format[i] == hf_none)
149 continue;
151 n = DATA_MAX_NAME_LEN - strlen (vl->host) - 2;
153 if (i > 0 && n >= 1) {
154 strncat (vl->host, ":", 1);
155 n--;
156 }
158 switch (hostname_format[i]) {
159 case hf_none: break;
160 case hf_hostname:
161 strncat (vl->host, hostname_g, n);
162 break;
163 case hf_name:
164 name = virDomainGetName (dom);
165 if (name)
166 strncat (vl->host, name, n);
167 break;
168 case hf_uuid:
169 if (virDomainGetUUIDString (dom, uuid) == 0)
170 strncat (vl->host, uuid, n);
171 break;
172 }
173 }
175 vl->host[sizeof (vl->host) - 1] = '\0';
176 } /* void init_value_list */
178 static void
179 cpu_submit (unsigned long long cpu_time,
180 virDomainPtr dom, const char *type)
181 {
182 value_t values[1];
183 value_list_t vl = VALUE_LIST_INIT;
185 init_value_list (&vl, dom);
187 values[0].derive = cpu_time;
189 vl.values = values;
190 vl.values_len = 1;
192 sstrncpy (vl.type, type, sizeof (vl.type));
194 plugin_dispatch_values (&vl);
195 }
197 static void
198 vcpu_submit (derive_t cpu_time,
199 virDomainPtr dom, int vcpu_nr, const char *type)
200 {
201 value_t values[1];
202 value_list_t vl = VALUE_LIST_INIT;
204 init_value_list (&vl, dom);
206 values[0].derive = cpu_time;
207 vl.values = values;
208 vl.values_len = 1;
210 sstrncpy (vl.type, type, sizeof (vl.type));
211 ssnprintf (vl.type_instance, sizeof (vl.type_instance), "%d", vcpu_nr);
213 plugin_dispatch_values (&vl);
214 }
216 static void
217 submit_derive2 (const char *type, derive_t v0, derive_t v1,
218 virDomainPtr dom, const char *devname)
219 {
220 value_t values[2];
221 value_list_t vl = VALUE_LIST_INIT;
223 init_value_list (&vl, dom);
225 values[0].derive = v0;
226 values[1].derive = v1;
227 vl.values = values;
228 vl.values_len = 2;
230 sstrncpy (vl.type, type, sizeof (vl.type));
231 sstrncpy (vl.type_instance, devname, sizeof (vl.type_instance));
233 plugin_dispatch_values (&vl);
234 } /* void submit_derive2 */
236 static int
237 lv_init (void)
238 {
239 if (virInitialize () != 0)
240 return -1;
242 return 0;
243 }
245 static int
246 lv_config (const char *key, const char *value)
247 {
248 if (virInitialize () != 0)
249 return 1;
251 if (il_domains == NULL)
252 il_domains = ignorelist_create (1);
253 if (il_block_devices == NULL)
254 il_block_devices = ignorelist_create (1);
255 if (il_interface_devices == NULL)
256 il_interface_devices = ignorelist_create (1);
258 if (strcasecmp (key, "Connection") == 0) {
259 char *tmp = strdup (value);
260 if (tmp == NULL) {
261 ERROR ("libvirt plugin: Connection strdup failed.");
262 return 1;
263 }
264 sfree (conn_string);
265 conn_string = tmp;
266 return 0;
267 }
269 if (strcasecmp (key, "RefreshInterval") == 0) {
270 char *eptr = NULL;
271 interval = strtol (value, &eptr, 10);
272 if (eptr == NULL || *eptr != '\0') return 1;
273 return 0;
274 }
276 if (strcasecmp (key, "Domain") == 0) {
277 if (ignorelist_add (il_domains, value)) return 1;
278 return 0;
279 }
280 if (strcasecmp (key, "BlockDevice") == 0) {
281 if (ignorelist_add (il_block_devices, value)) return 1;
282 return 0;
283 }
284 if (strcasecmp (key, "InterfaceDevice") == 0) {
285 if (ignorelist_add (il_interface_devices, value)) return 1;
286 return 0;
287 }
289 if (strcasecmp (key, "IgnoreSelected") == 0) {
290 if (IS_TRUE (value))
291 {
292 ignorelist_set_invert (il_domains, 0);
293 ignorelist_set_invert (il_block_devices, 0);
294 ignorelist_set_invert (il_interface_devices, 0);
295 }
296 else
297 {
298 ignorelist_set_invert (il_domains, 1);
299 ignorelist_set_invert (il_block_devices, 1);
300 ignorelist_set_invert (il_interface_devices, 1);
301 }
302 return 0;
303 }
305 if (strcasecmp (key, "HostnameFormat") == 0) {
306 char *value_copy;
307 char *fields[HF_MAX_FIELDS];
308 int i, n;
310 value_copy = strdup (value);
311 if (value_copy == NULL) {
312 ERROR ("libvirt plugin: strdup failed.");
313 return -1;
314 }
316 n = strsplit (value_copy, fields, HF_MAX_FIELDS);
317 if (n < 1) {
318 sfree (value_copy);
319 ERROR ("HostnameFormat: no fields");
320 return -1;
321 }
323 for (i = 0; i < n; ++i) {
324 if (strcasecmp (fields[i], "hostname") == 0)
325 hostname_format[i] = hf_hostname;
326 else if (strcasecmp (fields[i], "name") == 0)
327 hostname_format[i] = hf_name;
328 else if (strcasecmp (fields[i], "uuid") == 0)
329 hostname_format[i] = hf_uuid;
330 else {
331 sfree (value_copy);
332 ERROR ("unknown HostnameFormat field: %s", fields[i]);
333 return -1;
334 }
335 }
336 sfree (value_copy);
338 for (i = n; i < HF_MAX_FIELDS; ++i)
339 hostname_format[i] = hf_none;
341 return 0;
342 }
344 if (strcasecmp (key, "InterfaceFormat") == 0) {
345 if (strcasecmp (value, "name") == 0)
346 interface_format = if_name;
347 else if (strcasecmp (value, "address") == 0)
348 interface_format = if_address;
349 else {
350 ERROR ("unknown InterfaceFormat: %s", value);
351 return -1;
352 }
353 return 0;
354 }
356 /* Unrecognised option. */
357 return -1;
358 }
360 static int
361 lv_read (void)
362 {
363 time_t t;
364 int i;
366 if (conn == NULL) {
367 /* `conn_string == NULL' is acceptable. */
368 conn = virConnectOpenReadOnly (conn_string);
369 if (conn == NULL) {
370 c_complain (LOG_ERR, &conn_complain,
371 "libvirt plugin: Unable to connect: "
372 "virConnectOpenReadOnly failed.");
373 return -1;
374 }
375 }
376 c_release (LOG_NOTICE, &conn_complain,
377 "libvirt plugin: Connection established.");
379 time (&t);
381 /* Need to refresh domain or device lists? */
382 if ((last_refresh == (time_t) 0) ||
383 ((interval > 0) && ((last_refresh + interval) <= t))) {
384 if (refresh_lists () != 0) {
385 if (conn != NULL)
386 virConnectClose (conn);
387 conn = NULL;
388 return -1;
389 }
390 last_refresh = t;
391 }
393 #if 0
394 for (i = 0; i < nr_domains; ++i)
395 fprintf (stderr, "domain %s\n", virDomainGetName (domains[i]));
396 for (i = 0; i < nr_block_devices; ++i)
397 fprintf (stderr, "block device %d %s:%s\n",
398 i, virDomainGetName (block_devices[i].dom),
399 block_devices[i].path);
400 for (i = 0; i < nr_interface_devices; ++i)
401 fprintf (stderr, "interface device %d %s:%s\n",
402 i, virDomainGetName (interface_devices[i].dom),
403 interface_devices[i].path);
404 #endif
406 /* Get CPU usage, VCPU usage for each domain. */
407 for (i = 0; i < nr_domains; ++i) {
408 virDomainInfo info;
409 virVcpuInfoPtr vinfo = NULL;
410 int status;
411 int j;
413 status = virDomainGetInfo (domains[i], &info);
414 if (status != 0)
415 {
416 ERROR ("libvirt plugin: virDomainGetInfo failed with status %i.",
417 status);
418 continue;
419 }
421 cpu_submit (info.cpuTime, domains[i], "virt_cpu_total");
423 vinfo = malloc (info.nrVirtCpu * sizeof (vinfo[0]));
424 if (vinfo == NULL) {
425 ERROR ("libvirt plugin: malloc failed.");
426 continue;
427 }
429 status = virDomainGetVcpus (domains[i], vinfo, info.nrVirtCpu,
430 /* cpu map = */ NULL, /* cpu map length = */ 0);
431 if (status < 0)
432 {
433 ERROR ("libvirt plugin: virDomainGetVcpus failed with status %i.",
434 status);
435 free (vinfo);
436 continue;
437 }
439 for (j = 0; j < info.nrVirtCpu; ++j)
440 vcpu_submit (vinfo[j].cpuTime,
441 domains[i], vinfo[j].number, "virt_vcpu");
443 sfree (vinfo);
444 }
446 /* Get block device stats for each domain. */
447 for (i = 0; i < nr_block_devices; ++i) {
448 struct _virDomainBlockStats stats;
450 if (virDomainBlockStats (block_devices[i].dom, block_devices[i].path,
451 &stats, sizeof stats) != 0)
452 continue;
454 if ((stats.rd_req != -1) && (stats.wr_req != -1))
455 submit_derive2 ("disk_ops",
456 (derive_t) stats.rd_req, (derive_t) stats.wr_req,
457 block_devices[i].dom, block_devices[i].path);
459 if ((stats.rd_bytes != -1) && (stats.wr_bytes != -1))
460 submit_derive2 ("disk_octets",
461 (derive_t) stats.rd_bytes, (derive_t) stats.wr_bytes,
462 block_devices[i].dom, block_devices[i].path);
463 } /* for (nr_block_devices) */
465 /* Get interface stats for each domain. */
466 for (i = 0; i < nr_interface_devices; ++i) {
467 struct _virDomainInterfaceStats stats;
468 char *display_name = interface_devices[i].path;
470 if (interface_format == if_address)
471 display_name = interface_devices[i].address;
473 if (virDomainInterfaceStats (interface_devices[i].dom,
474 interface_devices[i].path,
475 &stats, sizeof stats) != 0)
476 continue;
478 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
479 submit_derive2 ("if_octets",
480 (derive_t) stats.rx_bytes, (derive_t) stats.tx_bytes,
481 interface_devices[i].dom, display_name);
483 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
484 submit_derive2 ("if_packets",
485 (derive_t) stats.rx_packets, (derive_t) stats.tx_packets,
486 interface_devices[i].dom, display_name);
488 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
489 submit_derive2 ("if_errors",
490 (derive_t) stats.rx_errs, (derive_t) stats.tx_errs,
491 interface_devices[i].dom, display_name);
493 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
494 submit_derive2 ("if_dropped",
495 (derive_t) stats.rx_drop, (derive_t) stats.tx_drop,
496 interface_devices[i].dom, display_name);
497 } /* for (nr_interface_devices) */
499 return 0;
500 }
502 static int
503 refresh_lists (void)
504 {
505 int n;
507 n = virConnectNumOfDomains (conn);
508 if (n < 0) {
509 VIRT_ERROR (conn, "reading number of domains");
510 return -1;
511 }
513 if (n > 0) {
514 int i;
515 int *domids;
517 /* Get list of domains. */
518 domids = malloc (sizeof (int) * n);
519 if (domids == 0) {
520 ERROR ("libvirt plugin: malloc failed.");
521 return -1;
522 }
524 n = virConnectListDomains (conn, domids, n);
525 if (n < 0) {
526 VIRT_ERROR (conn, "reading list of domains");
527 sfree (domids);
528 return -1;
529 }
531 free_block_devices ();
532 free_interface_devices ();
533 free_domains ();
535 /* Fetch each domain and add it to the list, unless ignore. */
536 for (i = 0; i < n; ++i) {
537 virDomainPtr dom = NULL;
538 const char *name;
539 char *xml = NULL;
540 xmlDocPtr xml_doc = NULL;
541 xmlXPathContextPtr xpath_ctx = NULL;
542 xmlXPathObjectPtr xpath_obj = NULL;
543 int j;
545 dom = virDomainLookupByID (conn, domids[i]);
546 if (dom == NULL) {
547 VIRT_ERROR (conn, "virDomainLookupByID");
548 /* Could be that the domain went away -- ignore it anyway. */
549 continue;
550 }
552 name = virDomainGetName (dom);
553 if (name == NULL) {
554 VIRT_ERROR (conn, "virDomainGetName");
555 goto cont;
556 }
558 if (il_domains && ignorelist_match (il_domains, name) != 0)
559 goto cont;
561 if (add_domain (dom) < 0) {
562 ERROR ("libvirt plugin: malloc failed.");
563 goto cont;
564 }
566 /* Get a list of devices for this domain. */
567 xml = virDomainGetXMLDesc (dom, 0);
568 if (!xml) {
569 VIRT_ERROR (conn, "virDomainGetXMLDesc");
570 goto cont;
571 }
573 /* Yuck, XML. Parse out the devices. */
574 xml_doc = xmlReadDoc ((xmlChar *) xml, NULL, NULL, XML_PARSE_NONET);
575 if (xml_doc == NULL) {
576 VIRT_ERROR (conn, "xmlReadDoc");
577 goto cont;
578 }
580 xpath_ctx = xmlXPathNewContext (xml_doc);
582 /* Block devices. */
583 xpath_obj = xmlXPathEval
584 ((xmlChar *) "/domain/devices/disk/target[@dev]",
585 xpath_ctx);
586 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
587 xpath_obj->nodesetval == NULL)
588 goto cont;
590 for (j = 0; j < xpath_obj->nodesetval->nodeNr; ++j) {
591 xmlNodePtr node;
592 char *path = NULL;
594 node = xpath_obj->nodesetval->nodeTab[j];
595 if (!node) continue;
596 path = (char *) xmlGetProp (node, (xmlChar *) "dev");
597 if (!path) continue;
599 if (il_block_devices &&
600 ignore_device_match (il_block_devices, name, path) != 0)
601 goto cont2;
603 add_block_device (dom, path);
604 cont2:
605 if (path) xmlFree (path);
606 }
607 xmlXPathFreeObject (xpath_obj);
609 /* Network interfaces. */
610 xpath_obj = xmlXPathEval
611 ((xmlChar *) "/domain/devices/interface[target[@dev]]",
612 xpath_ctx);
613 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
614 xpath_obj->nodesetval == NULL)
615 goto cont;
617 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
619 for (j = 0; j < xml_interfaces->nodeNr; ++j) {
620 char *path = NULL;
621 char *address = NULL;
622 xmlNodePtr xml_interface;
624 xml_interface = xml_interfaces->nodeTab[j];
625 if (!xml_interface) continue;
626 xmlNodePtr child = NULL;
628 for (child = xml_interface->children; child; child = child->next) {
629 if (child->type != XML_ELEMENT_NODE) continue;
631 if (xmlStrEqual(child->name, (const xmlChar *) "target")) {
632 path = (char *) xmlGetProp (child, (const xmlChar *) "dev");
633 if (!path) continue;
634 } else if (xmlStrEqual(child->name, (const xmlChar *) "mac")) {
635 address = (char *) xmlGetProp (child, (const xmlChar *) "address");
636 if (!address) continue;
637 }
638 }
640 if (il_interface_devices &&
641 (ignore_device_match (il_interface_devices, name, path) != 0 ||
642 ignore_device_match (il_interface_devices, name, address) != 0))
643 goto cont3;
645 add_interface_device (dom, path, address);
646 cont3:
647 if (path) xmlFree (path);
648 if (address) xmlFree (address);
649 }
651 cont:
652 if (xpath_obj) xmlXPathFreeObject (xpath_obj);
653 if (xpath_ctx) xmlXPathFreeContext (xpath_ctx);
654 if (xml_doc) xmlFreeDoc (xml_doc);
655 sfree (xml);
656 }
658 sfree (domids);
659 }
661 return 0;
662 }
664 static void
665 free_domains ()
666 {
667 int i;
669 if (domains) {
670 for (i = 0; i < nr_domains; ++i)
671 virDomainFree (domains[i]);
672 sfree (domains);
673 }
674 domains = NULL;
675 nr_domains = 0;
676 }
678 static int
679 add_domain (virDomainPtr dom)
680 {
681 virDomainPtr *new_ptr;
682 int new_size = sizeof (domains[0]) * (nr_domains+1);
684 if (domains)
685 new_ptr = realloc (domains, new_size);
686 else
687 new_ptr = malloc (new_size);
689 if (new_ptr == NULL)
690 return -1;
692 domains = new_ptr;
693 domains[nr_domains] = dom;
694 return nr_domains++;
695 }
697 static void
698 free_block_devices ()
699 {
700 int i;
702 if (block_devices) {
703 for (i = 0; i < nr_block_devices; ++i)
704 sfree (block_devices[i].path);
705 sfree (block_devices);
706 }
707 block_devices = NULL;
708 nr_block_devices = 0;
709 }
711 static int
712 add_block_device (virDomainPtr dom, const char *path)
713 {
714 struct block_device *new_ptr;
715 int new_size = sizeof (block_devices[0]) * (nr_block_devices+1);
716 char *path_copy;
718 path_copy = strdup (path);
719 if (!path_copy)
720 return -1;
722 if (block_devices)
723 new_ptr = realloc (block_devices, new_size);
724 else
725 new_ptr = malloc (new_size);
727 if (new_ptr == NULL) {
728 sfree (path_copy);
729 return -1;
730 }
731 block_devices = new_ptr;
732 block_devices[nr_block_devices].dom = dom;
733 block_devices[nr_block_devices].path = path_copy;
734 return nr_block_devices++;
735 }
737 static void
738 free_interface_devices ()
739 {
740 int i;
742 if (interface_devices) {
743 for (i = 0; i < nr_interface_devices; ++i) {
744 sfree (interface_devices[i].path);
745 sfree (interface_devices[i].address);
746 }
747 sfree (interface_devices);
748 }
749 interface_devices = NULL;
750 nr_interface_devices = 0;
751 }
753 static int
754 add_interface_device (virDomainPtr dom, const char *path, const char *address)
755 {
756 struct interface_device *new_ptr;
757 int new_size = sizeof (interface_devices[0]) * (nr_interface_devices+1);
758 char *path_copy, *address_copy;
760 path_copy = strdup (path);
761 if (!path_copy) return -1;
763 address_copy = strdup (address);
764 if (!address_copy) return -1;
766 if (interface_devices)
767 new_ptr = realloc (interface_devices, new_size);
768 else
769 new_ptr = malloc (new_size);
771 if (new_ptr == NULL) {
772 sfree (path_copy);
773 sfree (address_copy);
774 return -1;
775 }
776 interface_devices = new_ptr;
777 interface_devices[nr_interface_devices].dom = dom;
778 interface_devices[nr_interface_devices].path = path_copy;
779 interface_devices[nr_interface_devices].address = address_copy;
780 return nr_interface_devices++;
781 }
783 static int
784 ignore_device_match (ignorelist_t *il, const char *domname, const char *devpath)
785 {
786 char *name;
787 int n, r;
789 n = sizeof (char) * (strlen (domname) + strlen (devpath) + 2);
790 name = malloc (n);
791 if (name == NULL) {
792 ERROR ("libvirt plugin: malloc failed.");
793 return 0;
794 }
795 ssnprintf (name, n, "%s:%s", domname, devpath);
796 r = ignorelist_match (il, name);
797 sfree (name);
798 return r;
799 }
801 static int
802 lv_shutdown (void)
803 {
804 free_block_devices ();
805 free_interface_devices ();
806 free_domains ();
808 if (conn != NULL)
809 virConnectClose (conn);
810 conn = NULL;
812 ignorelist_free (il_domains);
813 il_domains = NULL;
814 ignorelist_free (il_block_devices);
815 il_block_devices = NULL;
816 ignorelist_free (il_interface_devices);
817 il_interface_devices = NULL;
819 return 0;
820 }
822 void
823 module_register (void)
824 {
825 plugin_register_config ("libvirt",
826 lv_config,
827 config_keys, NR_CONFIG_KEYS);
828 plugin_register_init ("libvirt", lv_init);
829 plugin_register_read ("libvirt", lv_read);
830 plugin_register_shutdown ("libvirt", lv_shutdown);
831 }
833 /*
834 * vim: shiftwidth=4 tabstop=8 softtabstop=4 expandtab fdm=marker
835 */