2 * collectd - src/virt.c
3 * Copyright (C) 2006-2008 Red Hat Inc.
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.
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.
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
19 * Richard W.M. Jones <rjones@redhat.com>
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>
34 #include <libgen.h> /* for basename(3) */
37 #define PLUGIN_NAME "virt"
39 static const char *config_keys[] = {
47 "BlockDeviceFormatBasename",
54 "PluginInstanceFormat",
58 #define NR_CONFIG_KEYS ((sizeof config_keys / sizeof config_keys[0]) - 1)
61 static virConnectPtr conn = 0;
62 static char *conn_string = NULL;
63 static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
65 /* Seconds between list refreshes, 0 disables completely. */
66 static int interval = 60;
68 /* List of domains, if specified. */
69 static ignorelist_t *il_domains = NULL;
70 /* List of block devices, if specified. */
71 static ignorelist_t *il_block_devices = NULL;
72 /* List of network interface devices, if specified. */
73 static ignorelist_t *il_interface_devices = NULL;
75 static int ignore_device_match (ignorelist_t *,
76 const char *domname, const char *devpath);
78 /* Actual list of domains found on last refresh. */
79 static virDomainPtr *domains = NULL;
80 static int nr_domains = 0;
82 static void free_domains (void);
83 static int add_domain (virDomainPtr dom);
85 /* Actual list of block devices found on last refresh. */
87 virDomainPtr dom; /* domain */
88 char *path; /* name of block device */
91 static struct block_device *block_devices = NULL;
92 static int nr_block_devices = 0;
94 static void free_block_devices (void);
95 static int add_block_device (virDomainPtr dom, const char *path);
97 /* Actual list of network interfaces found on last refresh. */
98 struct interface_device {
99 virDomainPtr dom; /* domain */
100 char *path; /* name of interface device */
101 char *address; /* mac address of interface device */
102 char *number; /* interface device number */
105 static struct interface_device *interface_devices = NULL;
106 static int nr_interface_devices = 0;
108 static void free_interface_devices (void);
109 static int add_interface_device (virDomainPtr dom, const char *path, const char *address, unsigned int number);
111 /* HostnameFormat. */
112 #define HF_MAX_FIELDS 3
121 static enum hf_field hostname_format[HF_MAX_FIELDS] =
124 /* PluginInstanceFormat */
125 #define PLGINST_MAX_FIELDS 2
133 static enum plginst_field plugin_instance_format[PLGINST_MAX_FIELDS] =
136 /* BlockDeviceFormat */
142 /* InterfaceFormat. */
149 /* BlockDeviceFormatBasename */
150 _Bool blockdevice_format_basename = 0;
151 static enum bd_field blockdevice_format = target;
152 static enum if_field interface_format = if_name;
154 /* Time that we last refreshed. */
155 static time_t last_refresh = (time_t) 0;
157 static int refresh_lists (void);
159 /* ERROR(...) macro for virterrors. */
160 #define VIRT_ERROR(conn,s) do { \
162 err = (conn) ? virConnGetLastError ((conn)) : virGetLastError (); \
163 if (err) ERROR ("%s: %s", (s), err->message); \
167 init_value_list (value_list_t *vl, virDomainPtr dom)
171 char uuid[VIR_UUID_STRING_BUFLEN];
173 sstrncpy (vl->plugin, PLUGIN_NAME, sizeof (vl->plugin));
177 /* Construct the hostname field according to HostnameFormat. */
178 for (int i = 0; i < HF_MAX_FIELDS; ++i) {
179 if (hostname_format[i] == hf_none)
182 n = DATA_MAX_NAME_LEN - strlen (vl->host) - 2;
184 if (i > 0 && n >= 1) {
185 strncat (vl->host, ":", 1);
189 switch (hostname_format[i]) {
192 strncat (vl->host, hostname_g, n);
195 name = virDomainGetName (dom);
197 strncat (vl->host, name, n);
200 if (virDomainGetUUIDString (dom, uuid) == 0)
201 strncat (vl->host, uuid, n);
206 vl->host[sizeof (vl->host) - 1] = '\0';
208 /* Construct the plugin instance field according to PluginInstanceFormat. */
209 for (int i = 0; i < PLGINST_MAX_FIELDS; ++i) {
210 if (plugin_instance_format[i] == plginst_none)
213 n = sizeof(vl->plugin_instance) - strlen (vl->plugin_instance) - 2;
215 if (i > 0 && n >= 1) {
216 strncat (vl->plugin_instance, ":", 1);
220 switch (plugin_instance_format[i]) {
221 case plginst_none: break;
223 name = virDomainGetName (dom);
225 strncat (vl->plugin_instance, name, n);
228 if (virDomainGetUUIDString (dom, uuid) == 0)
229 strncat (vl->plugin_instance, uuid, n);
234 vl->plugin_instance[sizeof (vl->plugin_instance) - 1] = '\0';
236 } /* void init_value_list */
238 static void submit (virDomainPtr dom,
239 char const *type, char const *type_instance,
240 value_t *values, size_t values_len)
242 value_list_t vl = VALUE_LIST_INIT;
243 init_value_list (&vl, dom);
246 vl.values_len = values_len;
248 sstrncpy (vl.type, type, sizeof (vl.type));
249 if (type_instance != NULL)
250 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
252 plugin_dispatch_values (&vl);
256 memory_submit (gauge_t value, virDomainPtr dom)
258 submit (dom, "memory", "total", &(value_t) { .gauge = value }, 1);
262 memory_stats_submit (gauge_t value, virDomainPtr dom, int tag_index)
264 static const char *tags[] = { "swap_in", "swap_out", "major_fault", "minor_fault",
265 "unused", "available", "actual_balloon", "rss"};
267 if ((tag_index < 0) || (tag_index >= STATIC_ARRAY_SIZE (tags))) {
268 ERROR ("virt plugin: Array index out of bounds: tag_index = %d", tag_index);
272 submit (dom, "memory", tags[tag_index], &(value_t) { .gauge = value }, 1);
276 cpu_submit (unsigned long long value,
277 virDomainPtr dom, const char *type)
279 submit (dom, type, NULL, &(value_t) { .derive = (derive_t) value }, 1);
283 vcpu_submit (derive_t value,
284 virDomainPtr dom, int vcpu_nr, const char *type)
286 char type_instance[DATA_MAX_NAME_LEN];
288 ssnprintf (type_instance, sizeof (type_instance), "%d", vcpu_nr);
290 submit (dom, type, type_instance, &(value_t) { .derive = value }, 1);
294 submit_derive2 (const char *type, derive_t v0, derive_t v1,
295 virDomainPtr dom, const char *devname)
302 submit (dom, type, devname, values, STATIC_ARRAY_SIZE (values));
303 } /* void submit_derive2 */
308 if (virInitialize () != 0)
315 lv_config (const char *key, const char *value)
317 if (virInitialize () != 0)
320 if (il_domains == NULL)
321 il_domains = ignorelist_create (1);
322 if (il_block_devices == NULL)
323 il_block_devices = ignorelist_create (1);
324 if (il_interface_devices == NULL)
325 il_interface_devices = ignorelist_create (1);
327 if (strcasecmp (key, "Connection") == 0) {
328 char *tmp = strdup (value);
330 ERROR (PLUGIN_NAME " plugin: Connection strdup failed.");
338 if (strcasecmp (key, "RefreshInterval") == 0) {
340 interval = strtol (value, &eptr, 10);
341 if (eptr == NULL || *eptr != '\0') return 1;
345 if (strcasecmp (key, "Domain") == 0) {
346 if (ignorelist_add (il_domains, value)) return 1;
349 if (strcasecmp (key, "BlockDevice") == 0) {
350 if (ignorelist_add (il_block_devices, value)) return 1;
354 if (strcasecmp (key, "BlockDeviceFormat") == 0) {
355 if (strcasecmp (value, "target") == 0)
356 blockdevice_format = target;
357 else if (strcasecmp (value, "source") == 0)
358 blockdevice_format = source;
360 ERROR (PLUGIN_NAME " plugin: unknown BlockDeviceFormat: %s", value);
365 if (strcasecmp (key, "BlockDeviceFormatBasename") == 0) {
366 blockdevice_format_basename = IS_TRUE (value);
369 if (strcasecmp (key, "InterfaceDevice") == 0) {
370 if (ignorelist_add (il_interface_devices, value)) return 1;
374 if (strcasecmp (key, "IgnoreSelected") == 0) {
377 ignorelist_set_invert (il_domains, 0);
378 ignorelist_set_invert (il_block_devices, 0);
379 ignorelist_set_invert (il_interface_devices, 0);
383 ignorelist_set_invert (il_domains, 1);
384 ignorelist_set_invert (il_block_devices, 1);
385 ignorelist_set_invert (il_interface_devices, 1);
390 if (strcasecmp (key, "HostnameFormat") == 0) {
392 char *fields[HF_MAX_FIELDS];
395 value_copy = strdup (value);
396 if (value_copy == NULL) {
397 ERROR (PLUGIN_NAME " plugin: strdup failed.");
401 n = strsplit (value_copy, fields, HF_MAX_FIELDS);
404 ERROR (PLUGIN_NAME " plugin: HostnameFormat: no fields");
408 for (int i = 0; i < n; ++i) {
409 if (strcasecmp (fields[i], "hostname") == 0)
410 hostname_format[i] = hf_hostname;
411 else if (strcasecmp (fields[i], "name") == 0)
412 hostname_format[i] = hf_name;
413 else if (strcasecmp (fields[i], "uuid") == 0)
414 hostname_format[i] = hf_uuid;
416 ERROR (PLUGIN_NAME " plugin: unknown HostnameFormat field: %s", fields[i]);
423 for (int i = n; i < HF_MAX_FIELDS; ++i)
424 hostname_format[i] = hf_none;
429 if (strcasecmp (key, "PluginInstanceFormat") == 0) {
431 char *fields[PLGINST_MAX_FIELDS];
434 value_copy = strdup (value);
435 if (value_copy == NULL) {
436 ERROR (PLUGIN_NAME " plugin: strdup failed.");
440 n = strsplit (value_copy, fields, PLGINST_MAX_FIELDS);
443 ERROR (PLUGIN_NAME " plugin: PluginInstanceFormat: no fields");
447 for (int i = 0; i < n; ++i) {
448 if (strcasecmp (fields[i], "none") == 0) {
449 plugin_instance_format[i] = plginst_none;
451 } else if (strcasecmp (fields[i], "name") == 0)
452 plugin_instance_format[i] = plginst_name;
453 else if (strcasecmp (fields[i], "uuid") == 0)
454 plugin_instance_format[i] = plginst_uuid;
456 ERROR (PLUGIN_NAME " plugin: unknown PluginInstanceFormat field: %s", fields[i]);
463 for (int i = n; i < PLGINST_MAX_FIELDS; ++i)
464 plugin_instance_format[i] = plginst_none;
469 if (strcasecmp (key, "InterfaceFormat") == 0) {
470 if (strcasecmp (value, "name") == 0)
471 interface_format = if_name;
472 else if (strcasecmp (value, "address") == 0)
473 interface_format = if_address;
474 else if (strcasecmp (value, "number") == 0)
475 interface_format = if_number;
477 ERROR (PLUGIN_NAME " plugin: unknown InterfaceFormat: %s", value);
483 /* Unrecognised option. */
493 /* `conn_string == NULL' is acceptable. */
494 conn = virConnectOpenReadOnly (conn_string);
496 c_complain (LOG_ERR, &conn_complain,
497 PLUGIN_NAME " plugin: Unable to connect: "
498 "virConnectOpenReadOnly failed.");
502 c_release (LOG_NOTICE, &conn_complain,
503 PLUGIN_NAME " plugin: Connection established.");
507 /* Need to refresh domain or device lists? */
508 if ((last_refresh == (time_t) 0) ||
509 ((interval > 0) && ((last_refresh + interval) <= t))) {
510 if (refresh_lists () != 0) {
512 virConnectClose (conn);
520 for (int i = 0; i < nr_domains; ++i)
521 fprintf (stderr, "domain %s\n", virDomainGetName (domains[i]));
522 for (int i = 0; i < nr_block_devices; ++i)
523 fprintf (stderr, "block device %d %s:%s\n",
524 i, virDomainGetName (block_devices[i].dom),
525 block_devices[i].path);
526 for (int i = 0; i < nr_interface_devices; ++i)
527 fprintf (stderr, "interface device %d %s:%s\n",
528 i, virDomainGetName (interface_devices[i].dom),
529 interface_devices[i].path);
532 /* Get CPU usage, memory, VCPU usage for each domain. */
533 for (int i = 0; i < nr_domains; ++i) {
535 virVcpuInfoPtr vinfo = NULL;
536 virDomainMemoryStatPtr minfo = NULL;
539 status = virDomainGetInfo (domains[i], &info);
542 ERROR (PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
547 if (info.state != VIR_DOMAIN_RUNNING)
549 /* only gather stats for running domains */
553 cpu_submit (info.cpuTime, domains[i], "virt_cpu_total");
554 memory_submit ((gauge_t) info.memory * 1024, domains[i]);
556 vinfo = malloc (info.nrVirtCpu * sizeof (vinfo[0]));
558 ERROR (PLUGIN_NAME " plugin: malloc failed.");
562 status = virDomainGetVcpus (domains[i], vinfo, info.nrVirtCpu,
563 /* cpu map = */ NULL, /* cpu map length = */ 0);
566 ERROR (PLUGIN_NAME " plugin: virDomainGetVcpus failed with status %i.",
572 for (int j = 0; j < info.nrVirtCpu; ++j)
573 vcpu_submit (vinfo[j].cpuTime,
574 domains[i], vinfo[j].number, "virt_vcpu");
578 minfo = malloc (VIR_DOMAIN_MEMORY_STAT_NR * sizeof (virDomainMemoryStatStruct));
580 ERROR ("virt plugin: malloc failed.");
584 status = virDomainMemoryStats (domains[i], minfo, VIR_DOMAIN_MEMORY_STAT_NR, 0);
587 ERROR ("virt plugin: virDomainMemoryStats failed with status %i.",
593 for (int j = 0; j < status; j++) {
594 memory_stats_submit ((gauge_t) minfo[j].val * 1024, domains[i], minfo[j].tag);
601 /* Get block device stats for each domain. */
602 for (int i = 0; i < nr_block_devices; ++i) {
603 struct _virDomainBlockStats stats;
605 if (virDomainBlockStats (block_devices[i].dom, block_devices[i].path,
606 &stats, sizeof stats) != 0)
609 char *type_instance = NULL;
610 if (blockdevice_format_basename && blockdevice_format == source)
611 type_instance = strdup(basename(block_devices[i].path));
613 type_instance = strdup(block_devices[i].path);
615 if ((stats.rd_req != -1) && (stats.wr_req != -1))
616 submit_derive2 ("disk_ops",
617 (derive_t) stats.rd_req, (derive_t) stats.wr_req,
618 block_devices[i].dom, type_instance);
620 if ((stats.rd_bytes != -1) && (stats.wr_bytes != -1))
621 submit_derive2 ("disk_octets",
622 (derive_t) stats.rd_bytes, (derive_t) stats.wr_bytes,
623 block_devices[i].dom, type_instance);
625 sfree (type_instance);
626 } /* for (nr_block_devices) */
628 /* Get interface stats for each domain. */
629 for (int i = 0; i < nr_interface_devices; ++i) {
630 struct _virDomainInterfaceStats stats;
631 char *display_name = NULL;
633 switch (interface_format) {
635 display_name = interface_devices[i].address;
638 display_name = interface_devices[i].number;
642 display_name = interface_devices[i].path;
645 if (virDomainInterfaceStats (interface_devices[i].dom,
646 interface_devices[i].path,
647 &stats, sizeof stats) != 0)
650 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
651 submit_derive2 ("if_octets",
652 (derive_t) stats.rx_bytes, (derive_t) stats.tx_bytes,
653 interface_devices[i].dom, display_name);
655 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
656 submit_derive2 ("if_packets",
657 (derive_t) stats.rx_packets, (derive_t) stats.tx_packets,
658 interface_devices[i].dom, display_name);
660 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
661 submit_derive2 ("if_errors",
662 (derive_t) stats.rx_errs, (derive_t) stats.tx_errs,
663 interface_devices[i].dom, display_name);
665 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
666 submit_derive2 ("if_dropped",
667 (derive_t) stats.rx_drop, (derive_t) stats.tx_drop,
668 interface_devices[i].dom, display_name);
669 } /* for (nr_interface_devices) */
675 virConnectListAllDomains() appeared in 0.10.2
676 Note that LIBVIR_CHECK_VERSION appeared a year later, so
677 in some systems which actually have virConnectListAllDomains()
678 we can't detect this.
680 #ifdef LIBVIR_CHECK_VERSION
681 # if LIBVIR_CHECK_VERSION(0,10,2)
682 # define HAVE_LIST_ALL_DOMAINS 1
691 n = virConnectNumOfDomains (conn);
693 VIRT_ERROR (conn, "reading number of domains");
698 #ifdef HAVE_LIST_ALL_DOMAINS
699 virDomainPtr *domains;
700 n = virConnectListAllDomains (conn, &domains, VIR_CONNECT_LIST_DOMAINS_ACTIVE);
704 /* Get list of domains. */
705 domids = malloc (sizeof (*domids) * n);
706 if (domids == NULL) {
707 ERROR (PLUGIN_NAME " plugin: malloc failed.");
711 n = virConnectListDomains (conn, domids, n);
715 VIRT_ERROR (conn, "reading list of domains");
716 #ifndef HAVE_LIST_ALL_DOMAINS
722 free_block_devices ();
723 free_interface_devices ();
726 /* Fetch each domain and add it to the list, unless ignore. */
727 for (int i = 0; i < n; ++i) {
730 xmlDocPtr xml_doc = NULL;
731 xmlXPathContextPtr xpath_ctx = NULL;
732 xmlXPathObjectPtr xpath_obj = NULL;
734 #ifdef HAVE_LIST_ALL_DOMAINS
735 virDomainPtr dom = domains[i];
737 virDomainPtr dom = NULL;
739 dom = virDomainLookupByID (conn, domids[i]);
741 VIRT_ERROR (conn, "virDomainLookupByID");
742 /* Could be that the domain went away -- ignore it anyway. */
747 name = virDomainGetName (dom);
749 VIRT_ERROR (conn, "virDomainGetName");
753 if (il_domains && ignorelist_match (il_domains, name) != 0)
756 if (add_domain (dom) < 0) {
757 ERROR (PLUGIN_NAME " plugin: malloc failed.");
761 /* Get a list of devices for this domain. */
762 xml = virDomainGetXMLDesc (dom, 0);
764 VIRT_ERROR (conn, "virDomainGetXMLDesc");
768 /* Yuck, XML. Parse out the devices. */
769 xml_doc = xmlReadDoc ((xmlChar *) xml, NULL, NULL, XML_PARSE_NONET);
770 if (xml_doc == NULL) {
771 VIRT_ERROR (conn, "xmlReadDoc");
775 xpath_ctx = xmlXPathNewContext (xml_doc);
778 char *bd_xmlpath = "/domain/devices/disk/target[@dev]";
779 if (blockdevice_format == source)
780 bd_xmlpath = "/domain/devices/disk/source[@dev]";
781 xpath_obj = xmlXPathEval ((xmlChar *) bd_xmlpath, xpath_ctx);
783 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
784 xpath_obj->nodesetval == NULL)
787 for (int j = 0; j < xpath_obj->nodesetval->nodeNr; ++j) {
791 node = xpath_obj->nodesetval->nodeTab[j];
793 path = (char *) xmlGetProp (node, (xmlChar *) "dev");
796 if (il_block_devices &&
797 ignore_device_match (il_block_devices, name, path) != 0)
800 add_block_device (dom, path);
802 if (path) xmlFree (path);
804 xmlXPathFreeObject (xpath_obj);
806 /* Network interfaces. */
807 xpath_obj = xmlXPathEval
808 ((xmlChar *) "/domain/devices/interface[target[@dev]]",
810 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
811 xpath_obj->nodesetval == NULL)
814 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
816 for (int j = 0; j < xml_interfaces->nodeNr; ++j) {
818 char *address = NULL;
819 xmlNodePtr xml_interface;
821 xml_interface = xml_interfaces->nodeTab[j];
822 if (!xml_interface) continue;
824 for (xmlNodePtr child = xml_interface->children; child; child = child->next) {
825 if (child->type != XML_ELEMENT_NODE) continue;
827 if (xmlStrEqual(child->name, (const xmlChar *) "target")) {
828 path = (char *) xmlGetProp (child, (const xmlChar *) "dev");
830 } else if (xmlStrEqual(child->name, (const xmlChar *) "mac")) {
831 address = (char *) xmlGetProp (child, (const xmlChar *) "address");
832 if (!address) continue;
836 if (il_interface_devices &&
837 (ignore_device_match (il_interface_devices, name, path) != 0 ||
838 ignore_device_match (il_interface_devices, name, address) != 0))
841 add_interface_device (dom, path, address, j+1);
843 if (path) xmlFree (path);
844 if (address) xmlFree (address);
848 if (xpath_obj) xmlXPathFreeObject (xpath_obj);
849 if (xpath_ctx) xmlXPathFreeContext (xpath_ctx);
850 if (xml_doc) xmlFreeDoc (xml_doc);
854 #ifdef HAVE_LIST_ALL_DOMAINS
868 for (int i = 0; i < nr_domains; ++i)
869 virDomainFree (domains[i]);
877 add_domain (virDomainPtr dom)
879 virDomainPtr *new_ptr;
880 int new_size = sizeof (domains[0]) * (nr_domains+1);
883 new_ptr = realloc (domains, new_size);
885 new_ptr = malloc (new_size);
891 domains[nr_domains] = dom;
896 free_block_devices (void)
899 for (int i = 0; i < nr_block_devices; ++i)
900 sfree (block_devices[i].path);
901 sfree (block_devices);
903 block_devices = NULL;
904 nr_block_devices = 0;
908 add_block_device (virDomainPtr dom, const char *path)
910 struct block_device *new_ptr;
911 int new_size = sizeof (block_devices[0]) * (nr_block_devices+1);
914 path_copy = strdup (path);
919 new_ptr = realloc (block_devices, new_size);
921 new_ptr = malloc (new_size);
923 if (new_ptr == NULL) {
927 block_devices = new_ptr;
928 block_devices[nr_block_devices].dom = dom;
929 block_devices[nr_block_devices].path = path_copy;
930 return nr_block_devices++;
934 free_interface_devices (void)
936 if (interface_devices) {
937 for (int i = 0; i < nr_interface_devices; ++i) {
938 sfree (interface_devices[i].path);
939 sfree (interface_devices[i].address);
940 sfree (interface_devices[i].number);
942 sfree (interface_devices);
944 interface_devices = NULL;
945 nr_interface_devices = 0;
949 add_interface_device (virDomainPtr dom, const char *path, const char *address, unsigned int number)
951 struct interface_device *new_ptr;
952 int new_size = sizeof (interface_devices[0]) * (nr_interface_devices+1);
953 char *path_copy, *address_copy, number_string[15];
955 if ((path == NULL) || (address == NULL))
958 path_copy = strdup (path);
959 if (!path_copy) return -1;
961 address_copy = strdup (address);
967 snprintf(number_string, sizeof (number_string), "interface-%u", number);
969 if (interface_devices)
970 new_ptr = realloc (interface_devices, new_size);
972 new_ptr = malloc (new_size);
974 if (new_ptr == NULL) {
976 sfree (address_copy);
979 interface_devices = new_ptr;
980 interface_devices[nr_interface_devices].dom = dom;
981 interface_devices[nr_interface_devices].path = path_copy;
982 interface_devices[nr_interface_devices].address = address_copy;
983 interface_devices[nr_interface_devices].number = strdup(number_string);
984 return nr_interface_devices++;
988 ignore_device_match (ignorelist_t *il, const char *domname, const char *devpath)
993 if ((domname == NULL) || (devpath == NULL))
996 n = sizeof (char) * (strlen (domname) + strlen (devpath) + 2);
999 ERROR (PLUGIN_NAME " plugin: malloc failed.");
1002 ssnprintf (name, n, "%s:%s", domname, devpath);
1003 r = ignorelist_match (il, name);
1011 free_block_devices ();
1012 free_interface_devices ();
1016 virConnectClose (conn);
1019 ignorelist_free (il_domains);
1021 ignorelist_free (il_block_devices);
1022 il_block_devices = NULL;
1023 ignorelist_free (il_interface_devices);
1024 il_interface_devices = NULL;
1030 module_register (void)
1032 plugin_register_config (PLUGIN_NAME,
1034 config_keys, NR_CONFIG_KEYS);
1035 plugin_register_init (PLUGIN_NAME, lv_init);
1036 plugin_register_read (PLUGIN_NAME, lv_read);
1037 plugin_register_shutdown (PLUGIN_NAME, lv_shutdown);
1041 * vim: shiftwidth=4 tabstop=8 softtabstop=4 expandtab fdm=marker