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 char *number; /* interface device number */
95 };
97 static struct interface_device *interface_devices = NULL;
98 static int nr_interface_devices = 0;
100 static void free_interface_devices (void);
101 static int add_interface_device (virDomainPtr dom, const char *path, const char *address, unsigned int number);
103 /* HostnameFormat. */
104 #define HF_MAX_FIELDS 3
106 enum hf_field {
107 hf_none = 0,
108 hf_hostname,
109 hf_name,
110 hf_uuid
111 };
113 static enum hf_field hostname_format[HF_MAX_FIELDS] =
114 { hf_name };
116 /* InterfaceFormat. */
117 enum if_field {
118 if_address,
119 if_name,
120 if_number
121 };
123 static enum if_field interface_format = if_name;
125 /* Time that we last refreshed. */
126 static time_t last_refresh = (time_t) 0;
128 static int refresh_lists (void);
130 /* ERROR(...) macro for virterrors. */
131 #define VIRT_ERROR(conn,s) do { \
132 virErrorPtr err; \
133 err = (conn) ? virConnGetLastError ((conn)) : virGetLastError (); \
134 if (err) ERROR ("%s: %s", (s), err->message); \
135 } while(0)
137 static void
138 init_value_list (value_list_t *vl, virDomainPtr dom)
139 {
140 int i, n;
141 const char *name;
142 char uuid[VIR_UUID_STRING_BUFLEN];
144 sstrncpy (vl->plugin, "libvirt", sizeof (vl->plugin));
146 vl->host[0] = '\0';
148 /* Construct the hostname field according to HostnameFormat. */
149 for (i = 0; i < HF_MAX_FIELDS; ++i) {
150 if (hostname_format[i] == hf_none)
151 continue;
153 n = DATA_MAX_NAME_LEN - strlen (vl->host) - 2;
155 if (i > 0 && n >= 1) {
156 strncat (vl->host, ":", 1);
157 n--;
158 }
160 switch (hostname_format[i]) {
161 case hf_none: break;
162 case hf_hostname:
163 strncat (vl->host, hostname_g, n);
164 break;
165 case hf_name:
166 name = virDomainGetName (dom);
167 if (name)
168 strncat (vl->host, name, n);
169 break;
170 case hf_uuid:
171 if (virDomainGetUUIDString (dom, uuid) == 0)
172 strncat (vl->host, uuid, n);
173 break;
174 }
175 }
177 vl->host[sizeof (vl->host) - 1] = '\0';
178 } /* void init_value_list */
180 static void
181 memory_submit (gauge_t memory, virDomainPtr dom)
182 {
183 value_t values[1];
184 value_list_t vl = VALUE_LIST_INIT;
186 init_value_list (&vl, dom);
188 values[0].gauge = memory;
190 vl.values = values;
191 vl.values_len = 1;
193 sstrncpy (vl.type, "memory", sizeof (vl.type));
194 sstrncpy (vl.type_instance, "total", sizeof (vl.type_instance));
196 plugin_dispatch_values (&vl);
197 }
199 static void
200 cpu_submit (unsigned long long cpu_time,
201 virDomainPtr dom, const char *type)
202 {
203 value_t values[1];
204 value_list_t vl = VALUE_LIST_INIT;
206 init_value_list (&vl, dom);
208 values[0].derive = cpu_time;
210 vl.values = values;
211 vl.values_len = 1;
213 sstrncpy (vl.type, type, sizeof (vl.type));
215 plugin_dispatch_values (&vl);
216 }
218 static void
219 vcpu_submit (derive_t cpu_time,
220 virDomainPtr dom, int vcpu_nr, const char *type)
221 {
222 value_t values[1];
223 value_list_t vl = VALUE_LIST_INIT;
225 init_value_list (&vl, dom);
227 values[0].derive = cpu_time;
228 vl.values = values;
229 vl.values_len = 1;
231 sstrncpy (vl.type, type, sizeof (vl.type));
232 ssnprintf (vl.type_instance, sizeof (vl.type_instance), "%d", vcpu_nr);
234 plugin_dispatch_values (&vl);
235 }
237 static void
238 submit_derive2 (const char *type, derive_t v0, derive_t v1,
239 virDomainPtr dom, const char *devname)
240 {
241 value_t values[2];
242 value_list_t vl = VALUE_LIST_INIT;
244 init_value_list (&vl, dom);
246 values[0].derive = v0;
247 values[1].derive = v1;
248 vl.values = values;
249 vl.values_len = 2;
251 sstrncpy (vl.type, type, sizeof (vl.type));
252 sstrncpy (vl.type_instance, devname, sizeof (vl.type_instance));
254 plugin_dispatch_values (&vl);
255 } /* void submit_derive2 */
257 static int
258 lv_init (void)
259 {
260 if (virInitialize () != 0)
261 return -1;
263 return 0;
264 }
266 static int
267 lv_config (const char *key, const char *value)
268 {
269 if (virInitialize () != 0)
270 return 1;
272 if (il_domains == NULL)
273 il_domains = ignorelist_create (1);
274 if (il_block_devices == NULL)
275 il_block_devices = ignorelist_create (1);
276 if (il_interface_devices == NULL)
277 il_interface_devices = ignorelist_create (1);
279 if (strcasecmp (key, "Connection") == 0) {
280 char *tmp = strdup (value);
281 if (tmp == NULL) {
282 ERROR ("libvirt plugin: Connection strdup failed.");
283 return 1;
284 }
285 sfree (conn_string);
286 conn_string = tmp;
287 return 0;
288 }
290 if (strcasecmp (key, "RefreshInterval") == 0) {
291 char *eptr = NULL;
292 interval = strtol (value, &eptr, 10);
293 if (eptr == NULL || *eptr != '\0') return 1;
294 return 0;
295 }
297 if (strcasecmp (key, "Domain") == 0) {
298 if (ignorelist_add (il_domains, value)) return 1;
299 return 0;
300 }
301 if (strcasecmp (key, "BlockDevice") == 0) {
302 if (ignorelist_add (il_block_devices, value)) return 1;
303 return 0;
304 }
305 if (strcasecmp (key, "InterfaceDevice") == 0) {
306 if (ignorelist_add (il_interface_devices, value)) return 1;
307 return 0;
308 }
310 if (strcasecmp (key, "IgnoreSelected") == 0) {
311 if (IS_TRUE (value))
312 {
313 ignorelist_set_invert (il_domains, 0);
314 ignorelist_set_invert (il_block_devices, 0);
315 ignorelist_set_invert (il_interface_devices, 0);
316 }
317 else
318 {
319 ignorelist_set_invert (il_domains, 1);
320 ignorelist_set_invert (il_block_devices, 1);
321 ignorelist_set_invert (il_interface_devices, 1);
322 }
323 return 0;
324 }
326 if (strcasecmp (key, "HostnameFormat") == 0) {
327 char *value_copy;
328 char *fields[HF_MAX_FIELDS];
329 int i, n;
331 value_copy = strdup (value);
332 if (value_copy == NULL) {
333 ERROR ("libvirt plugin: strdup failed.");
334 return -1;
335 }
337 n = strsplit (value_copy, fields, HF_MAX_FIELDS);
338 if (n < 1) {
339 sfree (value_copy);
340 ERROR ("HostnameFormat: no fields");
341 return -1;
342 }
344 for (i = 0; i < n; ++i) {
345 if (strcasecmp (fields[i], "hostname") == 0)
346 hostname_format[i] = hf_hostname;
347 else if (strcasecmp (fields[i], "name") == 0)
348 hostname_format[i] = hf_name;
349 else if (strcasecmp (fields[i], "uuid") == 0)
350 hostname_format[i] = hf_uuid;
351 else {
352 sfree (value_copy);
353 ERROR ("unknown HostnameFormat field: %s", fields[i]);
354 return -1;
355 }
356 }
357 sfree (value_copy);
359 for (i = n; i < HF_MAX_FIELDS; ++i)
360 hostname_format[i] = hf_none;
362 return 0;
363 }
365 if (strcasecmp (key, "InterfaceFormat") == 0) {
366 if (strcasecmp (value, "name") == 0)
367 interface_format = if_name;
368 else if (strcasecmp (value, "address") == 0)
369 interface_format = if_address;
370 else if (strcasecmp (value, "number") == 0)
371 interface_format = if_number;
372 else {
373 ERROR ("unknown InterfaceFormat: %s", value);
374 return -1;
375 }
376 return 0;
377 }
379 /* Unrecognised option. */
380 return -1;
381 }
383 static int
384 lv_read (void)
385 {
386 time_t t;
387 int i;
389 if (conn == NULL) {
390 /* `conn_string == NULL' is acceptable. */
391 conn = virConnectOpenReadOnly (conn_string);
392 if (conn == NULL) {
393 c_complain (LOG_ERR, &conn_complain,
394 "libvirt plugin: Unable to connect: "
395 "virConnectOpenReadOnly failed.");
396 return -1;
397 }
398 }
399 c_release (LOG_NOTICE, &conn_complain,
400 "libvirt plugin: Connection established.");
402 time (&t);
404 /* Need to refresh domain or device lists? */
405 if ((last_refresh == (time_t) 0) ||
406 ((interval > 0) && ((last_refresh + interval) <= t))) {
407 if (refresh_lists () != 0) {
408 if (conn != NULL)
409 virConnectClose (conn);
410 conn = NULL;
411 return -1;
412 }
413 last_refresh = t;
414 }
416 #if 0
417 for (i = 0; i < nr_domains; ++i)
418 fprintf (stderr, "domain %s\n", virDomainGetName (domains[i]));
419 for (i = 0; i < nr_block_devices; ++i)
420 fprintf (stderr, "block device %d %s:%s\n",
421 i, virDomainGetName (block_devices[i].dom),
422 block_devices[i].path);
423 for (i = 0; i < nr_interface_devices; ++i)
424 fprintf (stderr, "interface device %d %s:%s\n",
425 i, virDomainGetName (interface_devices[i].dom),
426 interface_devices[i].path);
427 #endif
429 /* Get CPU usage, memory, VCPU usage for each domain. */
430 for (i = 0; i < nr_domains; ++i) {
431 virDomainInfo info;
432 virVcpuInfoPtr vinfo = NULL;
433 int status;
434 int j;
436 status = virDomainGetInfo (domains[i], &info);
437 if (status != 0)
438 {
439 ERROR ("libvirt plugin: virDomainGetInfo failed with status %i.",
440 status);
441 continue;
442 }
444 cpu_submit (info.cpuTime, domains[i], "virt_cpu_total");
445 memory_submit ((gauge_t) info.memory * 1024, domains[i]);
447 vinfo = malloc (info.nrVirtCpu * sizeof (vinfo[0]));
448 if (vinfo == NULL) {
449 ERROR ("libvirt plugin: malloc failed.");
450 continue;
451 }
453 status = virDomainGetVcpus (domains[i], vinfo, info.nrVirtCpu,
454 /* cpu map = */ NULL, /* cpu map length = */ 0);
455 if (status < 0)
456 {
457 ERROR ("libvirt plugin: virDomainGetVcpus failed with status %i.",
458 status);
459 free (vinfo);
460 continue;
461 }
463 for (j = 0; j < info.nrVirtCpu; ++j)
464 vcpu_submit (vinfo[j].cpuTime,
465 domains[i], vinfo[j].number, "virt_vcpu");
467 sfree (vinfo);
468 }
470 /* Get block device stats for each domain. */
471 for (i = 0; i < nr_block_devices; ++i) {
472 struct _virDomainBlockStats stats;
474 if (virDomainBlockStats (block_devices[i].dom, block_devices[i].path,
475 &stats, sizeof stats) != 0)
476 continue;
478 if ((stats.rd_req != -1) && (stats.wr_req != -1))
479 submit_derive2 ("disk_ops",
480 (derive_t) stats.rd_req, (derive_t) stats.wr_req,
481 block_devices[i].dom, block_devices[i].path);
483 if ((stats.rd_bytes != -1) && (stats.wr_bytes != -1))
484 submit_derive2 ("disk_octets",
485 (derive_t) stats.rd_bytes, (derive_t) stats.wr_bytes,
486 block_devices[i].dom, block_devices[i].path);
487 } /* for (nr_block_devices) */
489 /* Get interface stats for each domain. */
490 for (i = 0; i < nr_interface_devices; ++i) {
491 struct _virDomainInterfaceStats stats;
492 char *display_name = NULL;
495 switch (interface_format) {
496 case if_address:
497 display_name = interface_devices[i].address;
498 break;
499 case if_number:
500 display_name = interface_devices[i].number;
501 break;
502 case if_name:
503 default:
504 display_name = interface_devices[i].path;
505 }
507 if (virDomainInterfaceStats (interface_devices[i].dom,
508 interface_devices[i].path,
509 &stats, sizeof stats) != 0)
510 continue;
512 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
513 submit_derive2 ("if_octets",
514 (derive_t) stats.rx_bytes, (derive_t) stats.tx_bytes,
515 interface_devices[i].dom, display_name);
517 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
518 submit_derive2 ("if_packets",
519 (derive_t) stats.rx_packets, (derive_t) stats.tx_packets,
520 interface_devices[i].dom, display_name);
522 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
523 submit_derive2 ("if_errors",
524 (derive_t) stats.rx_errs, (derive_t) stats.tx_errs,
525 interface_devices[i].dom, display_name);
527 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
528 submit_derive2 ("if_dropped",
529 (derive_t) stats.rx_drop, (derive_t) stats.tx_drop,
530 interface_devices[i].dom, display_name);
531 } /* for (nr_interface_devices) */
533 return 0;
534 }
536 static int
537 refresh_lists (void)
538 {
539 int n;
541 n = virConnectNumOfDomains (conn);
542 if (n < 0) {
543 VIRT_ERROR (conn, "reading number of domains");
544 return -1;
545 }
547 if (n > 0) {
548 int i;
549 int *domids;
551 /* Get list of domains. */
552 domids = malloc (sizeof (int) * n);
553 if (domids == 0) {
554 ERROR ("libvirt plugin: malloc failed.");
555 return -1;
556 }
558 n = virConnectListDomains (conn, domids, n);
559 if (n < 0) {
560 VIRT_ERROR (conn, "reading list of domains");
561 sfree (domids);
562 return -1;
563 }
565 free_block_devices ();
566 free_interface_devices ();
567 free_domains ();
569 /* Fetch each domain and add it to the list, unless ignore. */
570 for (i = 0; i < n; ++i) {
571 virDomainPtr dom = NULL;
572 const char *name;
573 char *xml = NULL;
574 xmlDocPtr xml_doc = NULL;
575 xmlXPathContextPtr xpath_ctx = NULL;
576 xmlXPathObjectPtr xpath_obj = NULL;
577 int j;
579 dom = virDomainLookupByID (conn, domids[i]);
580 if (dom == NULL) {
581 VIRT_ERROR (conn, "virDomainLookupByID");
582 /* Could be that the domain went away -- ignore it anyway. */
583 continue;
584 }
586 name = virDomainGetName (dom);
587 if (name == NULL) {
588 VIRT_ERROR (conn, "virDomainGetName");
589 goto cont;
590 }
592 if (il_domains && ignorelist_match (il_domains, name) != 0)
593 goto cont;
595 if (add_domain (dom) < 0) {
596 ERROR ("libvirt plugin: malloc failed.");
597 goto cont;
598 }
600 /* Get a list of devices for this domain. */
601 xml = virDomainGetXMLDesc (dom, 0);
602 if (!xml) {
603 VIRT_ERROR (conn, "virDomainGetXMLDesc");
604 goto cont;
605 }
607 /* Yuck, XML. Parse out the devices. */
608 xml_doc = xmlReadDoc ((xmlChar *) xml, NULL, NULL, XML_PARSE_NONET);
609 if (xml_doc == NULL) {
610 VIRT_ERROR (conn, "xmlReadDoc");
611 goto cont;
612 }
614 xpath_ctx = xmlXPathNewContext (xml_doc);
616 /* Block devices. */
617 xpath_obj = xmlXPathEval
618 ((xmlChar *) "/domain/devices/disk/target[@dev]",
619 xpath_ctx);
620 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
621 xpath_obj->nodesetval == NULL)
622 goto cont;
624 for (j = 0; j < xpath_obj->nodesetval->nodeNr; ++j) {
625 xmlNodePtr node;
626 char *path = NULL;
628 node = xpath_obj->nodesetval->nodeTab[j];
629 if (!node) continue;
630 path = (char *) xmlGetProp (node, (xmlChar *) "dev");
631 if (!path) continue;
633 if (il_block_devices &&
634 ignore_device_match (il_block_devices, name, path) != 0)
635 goto cont2;
637 add_block_device (dom, path);
638 cont2:
639 if (path) xmlFree (path);
640 }
641 xmlXPathFreeObject (xpath_obj);
643 /* Network interfaces. */
644 xpath_obj = xmlXPathEval
645 ((xmlChar *) "/domain/devices/interface[target[@dev]]",
646 xpath_ctx);
647 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
648 xpath_obj->nodesetval == NULL)
649 goto cont;
651 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
653 for (j = 0; j < xml_interfaces->nodeNr; ++j) {
654 char *path = NULL;
655 char *address = NULL;
656 xmlNodePtr xml_interface;
658 xml_interface = xml_interfaces->nodeTab[j];
659 if (!xml_interface) continue;
660 xmlNodePtr child = NULL;
662 for (child = xml_interface->children; child; child = child->next) {
663 if (child->type != XML_ELEMENT_NODE) continue;
665 if (xmlStrEqual(child->name, (const xmlChar *) "target")) {
666 path = (char *) xmlGetProp (child, (const xmlChar *) "dev");
667 if (!path) continue;
668 } else if (xmlStrEqual(child->name, (const xmlChar *) "mac")) {
669 address = (char *) xmlGetProp (child, (const xmlChar *) "address");
670 if (!address) continue;
671 }
672 }
674 if (il_interface_devices &&
675 (ignore_device_match (il_interface_devices, name, path) != 0 ||
676 ignore_device_match (il_interface_devices, name, address) != 0))
677 goto cont3;
679 add_interface_device (dom, path, address, j+1);
680 cont3:
681 if (path) xmlFree (path);
682 if (address) xmlFree (address);
683 }
685 cont:
686 if (xpath_obj) xmlXPathFreeObject (xpath_obj);
687 if (xpath_ctx) xmlXPathFreeContext (xpath_ctx);
688 if (xml_doc) xmlFreeDoc (xml_doc);
689 sfree (xml);
690 }
692 sfree (domids);
693 }
695 return 0;
696 }
698 static void
699 free_domains ()
700 {
701 int i;
703 if (domains) {
704 for (i = 0; i < nr_domains; ++i)
705 virDomainFree (domains[i]);
706 sfree (domains);
707 }
708 domains = NULL;
709 nr_domains = 0;
710 }
712 static int
713 add_domain (virDomainPtr dom)
714 {
715 virDomainPtr *new_ptr;
716 int new_size = sizeof (domains[0]) * (nr_domains+1);
718 if (domains)
719 new_ptr = realloc (domains, new_size);
720 else
721 new_ptr = malloc (new_size);
723 if (new_ptr == NULL)
724 return -1;
726 domains = new_ptr;
727 domains[nr_domains] = dom;
728 return nr_domains++;
729 }
731 static void
732 free_block_devices ()
733 {
734 int i;
736 if (block_devices) {
737 for (i = 0; i < nr_block_devices; ++i)
738 sfree (block_devices[i].path);
739 sfree (block_devices);
740 }
741 block_devices = NULL;
742 nr_block_devices = 0;
743 }
745 static int
746 add_block_device (virDomainPtr dom, const char *path)
747 {
748 struct block_device *new_ptr;
749 int new_size = sizeof (block_devices[0]) * (nr_block_devices+1);
750 char *path_copy;
752 path_copy = strdup (path);
753 if (!path_copy)
754 return -1;
756 if (block_devices)
757 new_ptr = realloc (block_devices, new_size);
758 else
759 new_ptr = malloc (new_size);
761 if (new_ptr == NULL) {
762 sfree (path_copy);
763 return -1;
764 }
765 block_devices = new_ptr;
766 block_devices[nr_block_devices].dom = dom;
767 block_devices[nr_block_devices].path = path_copy;
768 return nr_block_devices++;
769 }
771 static void
772 free_interface_devices ()
773 {
774 int i;
776 if (interface_devices) {
777 for (i = 0; i < nr_interface_devices; ++i) {
778 sfree (interface_devices[i].path);
779 sfree (interface_devices[i].address);
780 sfree (interface_devices[i].number);
781 }
782 sfree (interface_devices);
783 }
784 interface_devices = NULL;
785 nr_interface_devices = 0;
786 }
788 static int
789 add_interface_device (virDomainPtr dom, const char *path, const char *address, unsigned int number)
790 {
791 struct interface_device *new_ptr;
792 int new_size = sizeof (interface_devices[0]) * (nr_interface_devices+1);
793 char *path_copy, *address_copy, number_string[15];
795 path_copy = strdup (path);
796 if (!path_copy) return -1;
798 address_copy = strdup (address);
799 if (!address_copy) {
800 sfree(path_copy);
801 return -1;
802 }
804 snprintf(number_string, sizeof (number_string), "interface-%u", number);
806 if (interface_devices)
807 new_ptr = realloc (interface_devices, new_size);
808 else
809 new_ptr = malloc (new_size);
811 if (new_ptr == NULL) {
812 sfree (path_copy);
813 sfree (address_copy);
814 return -1;
815 }
816 interface_devices = new_ptr;
817 interface_devices[nr_interface_devices].dom = dom;
818 interface_devices[nr_interface_devices].path = path_copy;
819 interface_devices[nr_interface_devices].address = address_copy;
820 interface_devices[nr_interface_devices].number = strdup(number_string);
821 return nr_interface_devices++;
822 }
824 static int
825 ignore_device_match (ignorelist_t *il, const char *domname, const char *devpath)
826 {
827 char *name;
828 int n, r;
830 n = sizeof (char) * (strlen (domname) + strlen (devpath) + 2);
831 name = malloc (n);
832 if (name == NULL) {
833 ERROR ("libvirt plugin: malloc failed.");
834 return 0;
835 }
836 ssnprintf (name, n, "%s:%s", domname, devpath);
837 r = ignorelist_match (il, name);
838 sfree (name);
839 return r;
840 }
842 static int
843 lv_shutdown (void)
844 {
845 free_block_devices ();
846 free_interface_devices ();
847 free_domains ();
849 if (conn != NULL)
850 virConnectClose (conn);
851 conn = NULL;
853 ignorelist_free (il_domains);
854 il_domains = NULL;
855 ignorelist_free (il_block_devices);
856 il_block_devices = NULL;
857 ignorelist_free (il_interface_devices);
858 il_interface_devices = NULL;
860 return 0;
861 }
863 void
864 module_register (void)
865 {
866 plugin_register_config ("libvirt",
867 lv_config,
868 config_keys, NR_CONFIG_KEYS);
869 plugin_register_init ("libvirt", lv_init);
870 plugin_register_read ("libvirt", lv_read);
871 plugin_register_shutdown ("libvirt", lv_shutdown);
872 }
874 /*
875 * vim: shiftwidth=4 tabstop=8 softtabstop=4 expandtab fdm=marker
876 */