1 /**
2 * collectd - src/unixsock.c
3 * Copyright (C) 2007 Florian octo Forster
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 * Author:
19 * Florian octo Forster <octo at verplant.org>
20 **/
22 #include "collectd.h"
23 #include "common.h"
24 #include "plugin.h"
25 #include "configfile.h"
27 /* Folks without pthread will need to disable this plugin. */
28 #include <pthread.h>
30 #include <sys/socket.h>
31 #include <sys/un.h>
32 #include <sys/poll.h>
34 #include <grp.h>
36 #ifndef UNIX_PATH_MAX
37 # define UNIX_PATH_MAX sizeof (((struct sockaddr_un *)0)->sun_path)
38 #endif
40 #define US_DEFAULT_PATH PREFIX"/var/run/"PACKAGE_NAME"-unixsock"
42 /*
43 * Private data structures
44 */
45 /* linked list of cached values */
46 typedef struct value_cache_s
47 {
48 char name[4*DATA_MAX_NAME_LEN];
49 int values_num;
50 gauge_t *gauge;
51 counter_t *counter;
52 const data_set_t *ds;
53 time_t time;
54 struct value_cache_s *next;
55 } value_cache_t;
57 /*
58 * Private variables
59 */
60 /* valid configuration file keys */
61 static const char *config_keys[] =
62 {
63 "SocketFile",
64 "SocketGroup",
65 "SocketPerms",
66 NULL
67 };
68 static int config_keys_num = 3;
70 static int loop = 0;
72 /* socket configuration */
73 static int sock_fd = -1;
74 static char *sock_file = NULL;
75 static char *sock_group = NULL;
76 static int sock_perms = S_IRWXU | S_IRWXG;
78 static pthread_t listen_thread = (pthread_t) 0;
80 /* Linked list and auxilliary variables for saving values */
81 static value_cache_t *cache_head = NULL;
82 static pthread_mutex_t cache_lock = PTHREAD_MUTEX_INITIALIZER;
83 static unsigned int cache_oldest = UINT_MAX;
85 /*
86 * Functions
87 */
88 static int parse_identifier (char *str, char **ret_host,
89 char **ret_plugin, char **ret_plugin_instance,
90 char **ret_type, char **ret_type_instance)
91 {
92 char *hostname = NULL;
93 char *plugin = NULL;
94 char *plugin_instance = NULL;
95 char *type = NULL;
96 char *type_instance = NULL;
98 hostname = str;
99 if (hostname == NULL)
100 return (-1);
102 plugin = strchr (hostname, '/');
103 if (plugin == NULL)
104 return (-1);
105 *plugin = '\0'; plugin++;
107 type = strchr (plugin, '/');
108 if (type == NULL)
109 return (-1);
110 *type = '\0'; type++;
112 plugin_instance = strchr (plugin, '-');
113 if (plugin_instance != NULL)
114 {
115 *plugin_instance = '\0';
116 plugin_instance++;
117 }
119 type_instance = strchr (type, '-');
120 if (type_instance != NULL)
121 {
122 *type_instance = '\0';
123 type_instance++;
124 }
126 *ret_host = hostname;
127 *ret_plugin = plugin;
128 *ret_plugin_instance = plugin_instance;
129 *ret_type = type;
130 *ret_type_instance = type_instance;
131 return (0);
132 } /* int parse_identifier */
134 static value_cache_t *cache_search (const char *name)
135 {
136 value_cache_t *vc;
138 for (vc = cache_head; vc != NULL; vc = vc->next)
139 {
140 if (strcmp (vc->name, name) == 0)
141 break;
142 } /* for vc = cache_head .. NULL */
144 return (vc);
145 } /* value_cache_t *cache_search */
147 static int cache_insert (const data_set_t *ds, const value_list_t *vl)
148 {
149 /* We're called from `cache_update' so we don't need to lock the mutex */
150 value_cache_t *vc;
151 int i;
153 DEBUG ("unixsock plugin: cache_insert: ds->ds_num = %i;"
154 " vl->values_len = %i;",
155 ds->ds_num, vl->values_len);
156 assert (ds->ds_num == vl->values_len);
158 vc = (value_cache_t *) malloc (sizeof (value_cache_t));
159 if (vc == NULL)
160 {
161 char errbuf[1024];
162 pthread_mutex_unlock (&cache_lock);
163 ERROR ("unixsock plugin: malloc failed: %s",
164 sstrerror (errno, errbuf, sizeof (errbuf)));
165 return (-1);
166 }
168 vc->gauge = (gauge_t *) malloc (sizeof (gauge_t) * vl->values_len);
169 if (vc->gauge == NULL)
170 {
171 char errbuf[1024];
172 pthread_mutex_unlock (&cache_lock);
173 ERROR ("unixsock plugin: malloc failed: %s",
174 sstrerror (errno, errbuf, sizeof (errbuf)));
175 free (vc);
176 return (-1);
177 }
179 vc->counter = (counter_t *) malloc (sizeof (counter_t) * vl->values_len);
180 if (vc->counter == NULL)
181 {
182 char errbuf[1024];
183 pthread_mutex_unlock (&cache_lock);
184 ERROR ("unixsock plugin: malloc failed: %s",
185 sstrerror (errno, errbuf, sizeof (errbuf)));
186 free (vc->gauge);
187 free (vc);
188 return (-1);
189 }
191 if (FORMAT_VL (vc->name, sizeof (vc->name), vl, ds))
192 {
193 pthread_mutex_unlock (&cache_lock);
194 ERROR ("unixsock plugin: FORMAT_VL failed.");
195 free (vc->counter);
196 free (vc->gauge);
197 free (vc);
198 return (-1);
199 }
201 for (i = 0; i < ds->ds_num; i++)
202 {
203 if (ds->ds[i].type == DS_TYPE_COUNTER)
204 {
205 vc->gauge[i] = 0.0;
206 vc->counter[i] = vl->values[i].counter;
207 }
208 else if (ds->ds[i].type == DS_TYPE_GAUGE)
209 {
210 vc->gauge[i] = vl->values[i].gauge;
211 vc->counter[i] = 0;
212 }
213 else
214 {
215 vc->gauge[i] = 0.0;
216 vc->counter[i] = 0;
217 }
218 }
219 vc->values_num = ds->ds_num;
220 vc->ds = ds;
222 vc->next = cache_head;
223 cache_head = vc;
225 vc->time = vl->time;
226 if (vc->time < cache_oldest)
227 cache_oldest = vc->time;
229 pthread_mutex_unlock (&cache_lock);
230 return (0);
231 } /* int cache_insert */
233 static int cache_update (const data_set_t *ds, const value_list_t *vl)
234 {
235 char name[4*DATA_MAX_NAME_LEN];;
236 value_cache_t *vc;
237 int i;
239 if (FORMAT_VL (name, sizeof (name), vl, ds) != 0)
240 return (-1);
242 pthread_mutex_lock (&cache_lock);
244 vc = cache_search (name);
246 if (vc == NULL)
247 return (cache_insert (ds, vl));
249 assert (vc->values_num == ds->ds_num);
250 assert (vc->values_num == vl->values_len);
252 /*
253 * Update the values. This is possibly a lot more that you'd expect
254 * because we honor min and max values and handle counter overflows here.
255 */
256 for (i = 0; i < ds->ds_num; i++)
257 {
258 if (ds->ds[i].type == DS_TYPE_COUNTER)
259 {
260 if (vl->values[i].counter < vc->counter[i])
261 {
262 if (vl->values[i].counter <= 4294967295U)
263 {
264 vc->gauge[i] = ((4294967295U - vl->values[i].counter)
265 + vc->counter[i]) / (vl->time - vc->time);
266 }
267 else
268 {
269 vc->gauge[i] = ((18446744073709551615ULL - vl->values[i].counter)
270 + vc->counter[i]) / (vl->time - vc->time);
271 }
272 }
273 else
274 {
275 vc->gauge[i] = (vl->values[i].counter - vc->counter[i])
276 / (vl->time - vc->time);
277 }
279 vc->counter[i] = vl->values[i].counter;
280 }
281 else if (ds->ds[i].type == DS_TYPE_GAUGE)
282 {
283 vc->gauge[i] = vl->values[i].gauge;
284 vc->counter[i] = 0;
285 }
286 else
287 {
288 vc->gauge[i] = NAN;
289 vc->counter[i] = 0;
290 }
292 if (isnan (vc->gauge[i])
293 || (!isnan (ds->ds[i].min) && (vc->gauge[i] < ds->ds[i].min))
294 || (!isnan (ds->ds[i].max) && (vc->gauge[i] > ds->ds[i].max)))
295 vc->gauge[i] = NAN;
296 } /* for i = 0 .. ds->ds_num */
298 vc->ds = ds;
299 vc->time = vl->time;
301 if (vc->time < cache_oldest)
302 cache_oldest = vc->time;
304 pthread_mutex_unlock (&cache_lock);
305 return (0);
306 } /* int cache_update */
308 static void cache_flush (int max_age)
309 {
310 value_cache_t *this;
311 value_cache_t *prev;
312 time_t now;
314 pthread_mutex_lock (&cache_lock);
316 now = time (NULL);
318 if ((now - cache_oldest) <= max_age)
319 {
320 pthread_mutex_unlock (&cache_lock);
321 return;
322 }
324 cache_oldest = now;
326 prev = NULL;
327 this = cache_head;
329 while (this != NULL)
330 {
331 if ((now - this->time) <= max_age)
332 {
333 if (this->time < cache_oldest)
334 cache_oldest = this->time;
336 prev = this;
337 this = this->next;
338 continue;
339 }
341 if (prev == NULL)
342 cache_head = this->next;
343 else
344 prev->next = this->next;
346 free (this->gauge);
347 free (this->counter);
348 free (this);
350 if (prev == NULL)
351 this = cache_head;
352 else
353 this = prev->next;
354 } /* while (this != NULL) */
356 pthread_mutex_unlock (&cache_lock);
357 } /* int cache_flush */
359 static int us_open_socket (void)
360 {
361 struct sockaddr_un sa;
362 int status;
364 sock_fd = socket (PF_UNIX, SOCK_STREAM, 0);
365 if (sock_fd < 0)
366 {
367 char errbuf[1024];
368 ERROR ("unixsock plugin: socket failed: %s",
369 sstrerror (errno, errbuf, sizeof (errbuf)));
370 return (-1);
371 }
373 memset (&sa, '\0', sizeof (sa));
374 sa.sun_family = AF_UNIX;
375 strncpy (sa.sun_path, (sock_file != NULL) ? sock_file : US_DEFAULT_PATH,
376 sizeof (sa.sun_path) - 1);
377 /* unlink (sa.sun_path); */
379 status = bind (sock_fd, (struct sockaddr *) &sa, sizeof (sa));
380 if (status != 0)
381 {
382 char errbuf[1024];
383 sstrerror (errno, errbuf, sizeof (errbuf));
384 DEBUG ("bind failed: %s; sa.sun_path = %s", errbuf, sa.sun_path);
385 ERROR ("unixsock plugin: bind failed: %s", errbuf);
386 close (sock_fd);
387 sock_fd = -1;
388 return (-1);
389 }
391 status = listen (sock_fd, 8);
392 if (status != 0)
393 {
394 char errbuf[1024];
395 ERROR ("unixsock plugin: listen failed: %s",
396 sstrerror (errno, errbuf, sizeof (errbuf)));
397 close (sock_fd);
398 sock_fd = -1;
399 return (-1);
400 }
402 do
403 {
404 char *grpname;
405 struct group *g;
406 struct group sg;
407 char grbuf[2048];
409 grpname = (sock_group != NULL) ? sock_group : COLLECTD_GRP_NAME;
410 g = NULL;
412 status = getgrnam_r (grpname, &sg, grbuf, sizeof (grbuf), &g);
413 if (status != 0)
414 {
415 char errbuf[1024];
416 WARNING ("unixsock plugin: getgrnam_r (%s) failed: %s", grpname,
417 sstrerror (errno, errbuf, sizeof (errbuf)));
418 break;
419 }
420 if (g == NULL)
421 {
422 WARNING ("unixsock plugin: No such group: `%s'",
423 grpname);
424 break;
425 }
427 if (chown ((sock_file != NULL) ? sock_file : US_DEFAULT_PATH,
428 (uid_t) -1, g->gr_gid) != 0)
429 {
430 char errbuf[1024];
431 WARNING ("unixsock plugin: chown (%s, -1, %i) failed: %s",
432 (sock_file != NULL) ? sock_file : US_DEFAULT_PATH,
433 (int) g->gr_gid,
434 sstrerror (errno, errbuf, sizeof (errbuf)));
435 }
436 } while (0);
438 return (0);
439 } /* int us_open_socket */
441 static int us_handle_getval (FILE *fh, char **fields, int fields_num)
442 {
443 char *hostname;
444 char *plugin;
445 char *plugin_instance;
446 char *type;
447 char *type_instance;
448 char name[4*DATA_MAX_NAME_LEN];
449 value_cache_t *vc;
450 int status;
451 int i;
453 if (fields_num != 2)
454 {
455 DEBUG ("unixsock plugin: Wrong number of fields: %i", fields_num);
456 fprintf (fh, "-1 Wrong number of fields: Got %i, expected 2.\n",
457 fields_num);
458 fflush (fh);
459 return (-1);
460 }
461 DEBUG ("unixsock plugin: Got query for `%s'", fields[1]);
463 status = parse_identifier (fields[1], &hostname,
464 &plugin, &plugin_instance,
465 &type, &type_instance);
466 if (status != 0)
467 {
468 DEBUG ("unixsock plugin: Cannot parse `%s'", fields[1]);
469 fprintf (fh, "-1 Cannot parse identifier.\n");
470 fflush (fh);
471 return (-1);
472 }
474 status = format_name (name, sizeof (name),
475 hostname, plugin, plugin_instance, type, type_instance);
476 /* FIXME: Send some response */
477 if (status != 0)
478 return (-1);
480 pthread_mutex_lock (&cache_lock);
482 DEBUG ("vc = cache_search (%s)", name);
483 vc = cache_search (name);
485 if (vc == NULL)
486 {
487 DEBUG ("Did not find cache entry.");
488 fprintf (fh, "-1 No such value");
489 }
490 else
491 {
492 DEBUG ("Found cache entry.");
493 fprintf (fh, "%i", vc->values_num);
494 for (i = 0; i < vc->values_num; i++)
495 {
496 fprintf (fh, " %s=", vc->ds->ds[i].name);
497 if (isnan (vc->gauge[i]))
498 fprintf (fh, "NaN");
499 else
500 fprintf (fh, "%12e", vc->gauge[i]);
501 }
502 }
504 /* Free the mutex as soon as possible and definitely before flushing */
505 pthread_mutex_unlock (&cache_lock);
507 fprintf (fh, "\n");
508 fflush (fh);
510 return (0);
511 } /* int us_handle_getval */
513 static int us_handle_putval (FILE *fh, char **fields, int fields_num)
514 {
515 char *hostname;
516 char *plugin;
517 char *plugin_instance;
518 char *type;
519 char *type_instance;
520 int status;
521 int i;
523 const data_set_t *ds;
524 value_list_t vl = VALUE_LIST_INIT;
526 char **value_ptr;
528 if (fields_num != 3)
529 {
530 DEBUG ("unixsock plugin: Wrong number of fields: %i", fields_num);
531 fprintf (fh, "-1 Wrong number of fields: Got %i, expected 3.\n",
532 fields_num);
533 fflush (fh);
534 return (-1);
535 }
537 status = parse_identifier (fields[1], &hostname,
538 &plugin, &plugin_instance,
539 &type, &type_instance);
540 if (status != 0)
541 {
542 DEBUG ("unixsock plugin: Cannot parse `%s'", fields[1]);
543 fprintf (fh, "-1 Cannot parse identifier.\n");
544 fflush (fh);
545 return (-1);
546 }
548 /* FIXME: Send some response */
549 if ((strlen (hostname) > sizeof (vl.host))
550 || (strlen (plugin) > sizeof (vl.plugin))
551 || ((plugin_instance != NULL)
552 && (strlen (plugin_instance) > sizeof (vl.plugin_instance)))
553 || ((type_instance != NULL)
554 && (strlen (type_instance) > sizeof (vl.type_instance))))
555 return (-1);
557 strcpy (vl.host, hostname);
558 strcpy (vl.plugin, plugin);
559 if (plugin_instance != NULL)
560 strcpy (vl.plugin_instance, plugin_instance);
561 if (type_instance != NULL)
562 strcpy (vl.type_instance, type_instance);
564 { /* parse the time */
565 char *t = fields[2];
566 char *v = strchr (t, ':');
567 if (v == NULL)
568 return (-1);
569 *v = '\0'; v++;
571 vl.time = (time_t) atoi (t);
572 if (vl.time == 0)
573 vl.time = time (NULL);
575 fields[2] = v;
576 }
578 ds = plugin_get_ds (type);
579 if (ds == NULL)
580 return (-1);
582 value_ptr = (char **) calloc (ds->ds_num, sizeof (char *));
583 /* FIXME: Send some response */
584 if (value_ptr == NULL)
585 return (-1);
588 { /* parse the value-list. It's colon-separated. */
589 char *dummy;
590 char *ptr;
591 char *saveptr;
593 i = 0;
594 dummy = fields[2];
595 saveptr = NULL;
596 while ((ptr = strtok_r (dummy, ":", &saveptr)) != NULL)
597 {
598 dummy = NULL;
599 if (i >= ds->ds_num)
600 {
601 i = ds->ds_num + 1;
602 break;
603 }
604 value_ptr[i] = ptr;
605 i++;
606 }
608 if (i != ds->ds_num)
609 {
610 sfree (value_ptr);
611 /* FIXME: Send some response */
612 return (-1);
613 }
614 } /* done parsing the value-list */
616 vl.values_len = ds->ds_num;
617 vl.values = (value_t *) malloc (vl.values_len * sizeof (value_t));
618 if (vl.values == NULL)
619 {
620 sfree (value_ptr);
621 return (-1);
622 }
623 DEBUG ("value_ptr = 0x%p; vl.values = 0x%p;", (void *) value_ptr, (void *) vl.values);
625 for (i = 0; i < ds->ds_num; i++)
626 {
627 if (strcmp (value_ptr[i], "U") == 0)
628 vl.values[i].gauge = NAN;
629 else if (ds->ds[i].type == DS_TYPE_COUNTER)
630 vl.values[i].counter = atoll (value_ptr[i]);
631 else if (ds->ds[i].type == DS_TYPE_GAUGE)
632 vl.values[i].gauge = atof (value_ptr[i]);
633 } /* for (i = 2 .. fields_num) */
635 plugin_dispatch_values (type, &vl);
637 DEBUG ("value_ptr = 0x%p; vl.values = 0x%p;", (void *) value_ptr, (void *) vl.values);
639 sfree (value_ptr);
640 sfree (vl.values);
642 fprintf (fh, "0 Success\n");
643 fflush (fh);
645 return (0);
646 } /* int us_handle_putval */
648 static void *us_handle_client (void *arg)
649 {
650 int fd;
651 FILE *fh;
652 char buffer[1024];
653 char *fields[128];
654 int fields_num;
656 fd = *((int *) arg);
657 free (arg);
658 arg = NULL;
660 DEBUG ("Reading from fd #%i", fd);
662 fh = fdopen (fd, "r+");
663 if (fh == NULL)
664 {
665 char errbuf[1024];
666 ERROR ("unixsock plugin: fdopen failed: %s",
667 sstrerror (errno, errbuf, sizeof (errbuf)));
668 close (fd);
669 pthread_exit ((void *) 1);
670 }
672 while (fgets (buffer, sizeof (buffer), fh) != NULL)
673 {
674 int len;
676 len = strlen (buffer);
677 while ((len > 0)
678 && ((buffer[len - 1] == '\n') || (buffer[len - 1] == '\r')))
679 buffer[--len] = '\0';
681 if (len == 0)
682 continue;
684 DEBUG ("fgets -> buffer = %s; len = %i;", buffer, len);
686 fields_num = strsplit (buffer, fields,
687 sizeof (fields) / sizeof (fields[0]));
689 if (fields_num < 1)
690 {
691 close (fd);
692 break;
693 }
695 if (strcasecmp (fields[0], "getval") == 0)
696 {
697 us_handle_getval (fh, fields, fields_num);
698 }
699 else if (strcasecmp (fields[0], "putval") == 0)
700 {
701 us_handle_putval (fh, fields, fields_num);
702 }
703 else
704 {
705 fprintf (fh, "Unknown command: %s\n", fields[0]);
706 fflush (fh);
707 }
708 } /* while (fgets) */
710 DEBUG ("Exiting..");
711 close (fd);
713 pthread_exit ((void *) 0);
714 } /* void *us_handle_client */
716 static void *us_server_thread (void *arg)
717 {
718 int status;
719 int *remote_fd;
720 pthread_t th;
721 pthread_attr_t th_attr;
723 if (us_open_socket () != 0)
724 pthread_exit ((void *) 1);
726 while (loop != 0)
727 {
728 DEBUG ("Calling accept..");
729 status = accept (sock_fd, NULL, NULL);
730 if (status < 0)
731 {
732 char errbuf[1024];
734 if (errno == EINTR)
735 continue;
737 ERROR ("unixsock plugin: accept failed: %s",
738 sstrerror (errno, errbuf, sizeof (errbuf)));
739 close (sock_fd);
740 sock_fd = -1;
741 pthread_exit ((void *) 1);
742 }
744 remote_fd = (int *) malloc (sizeof (int));
745 if (remote_fd == NULL)
746 {
747 char errbuf[1024];
748 WARNING ("unixsock plugin: malloc failed: %s",
749 sstrerror (errno, errbuf, sizeof (errbuf)));
750 close (status);
751 continue;
752 }
753 *remote_fd = status;
755 DEBUG ("Spawning child to handle connection on fd #%i", *remote_fd);
757 pthread_attr_init (&th_attr);
758 pthread_attr_setdetachstate (&th_attr, PTHREAD_CREATE_DETACHED);
760 status = pthread_create (&th, &th_attr, us_handle_client, (void *) remote_fd);
761 if (status != 0)
762 {
763 char errbuf[1024];
764 WARNING ("unixsock plugin: pthread_create failed: %s",
765 sstrerror (errno, errbuf, sizeof (errbuf)));
766 close (*remote_fd);
767 free (remote_fd);
768 continue;
769 }
770 } /* while (loop) */
772 close (sock_fd);
773 sock_fd = -1;
775 return ((void *) 0);
776 } /* void *us_server_thread */
778 static int us_config (const char *key, const char *val)
779 {
780 if (strcasecmp (key, "SocketFile") == 0)
781 {
782 sfree (sock_file);
783 sock_file = strdup (val);
784 }
785 else if (strcasecmp (key, "SocketGroup") == 0)
786 {
787 sfree (sock_group);
788 sock_group = strdup (val);
789 }
790 else if (strcasecmp (key, "SocketPerms") == 0)
791 {
792 sock_perms = (int) strtol (val, NULL, 8);
793 }
794 else
795 {
796 return (-1);
797 }
799 return (0);
800 } /* int us_config */
802 static int us_init (void)
803 {
804 int status;
806 loop = 1;
808 status = pthread_create (&listen_thread, NULL, us_server_thread, NULL);
809 if (status != 0)
810 {
811 char errbuf[1024];
812 ERROR ("unixsock plugin: pthread_create failed: %s",
813 sstrerror (errno, errbuf, sizeof (errbuf)));
814 return (-1);
815 }
817 return (0);
818 } /* int us_init */
820 static int us_shutdown (void)
821 {
822 void *ret;
824 loop = 0;
826 if (listen_thread != (pthread_t) 0)
827 {
828 pthread_kill (listen_thread, SIGTERM);
829 pthread_join (listen_thread, &ret);
830 listen_thread = (pthread_t) 0;
831 }
833 plugin_unregister_init ("unixsock");
834 plugin_unregister_write ("unixsock");
835 plugin_unregister_shutdown ("unixsock");
837 return (0);
838 } /* int us_shutdown */
840 static int us_write (const data_set_t *ds, const value_list_t *vl)
841 {
842 cache_update (ds, vl);
843 cache_flush (2 * interval_g);
845 return (0);
846 }
848 void module_register (modreg_e load)
849 {
850 plugin_register_config ("unixsock", us_config,
851 config_keys, config_keys_num);
852 plugin_register_init ("unixsock", us_init);
853 plugin_register_write ("unixsock", us_write);
854 plugin_register_shutdown ("unixsock", us_shutdown);
855 } /* void module_register (void) */
857 /* vim: set sw=4 ts=4 sts=4 tw=78 : */