src/sensors.c

   1 /**
   2  * collectd - src/sensors.c
   3  * Copyright (C) 2005-2008  Florian octo Forster
   4  * Copyright (C) 2006       Luboš Staněk
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; only version 2 of the License is applicable.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  18  *
  19  * Authors:
  20  *   Florian octo Forster <octo at verplant.org>
  21  *
  22  *   Lubos Stanek <lubek at users.sourceforge.net> Wed Oct 27, 2006
  23  *   - config ExtendedSensorNaming option
  24  *   - precise sensor feature selection (chip-bus-address/type-feature)
  25  *     with ExtendedSensorNaming
  26  *   - more sensor features (finite list)
  27  *   - honor sensors.conf's ignored
  28  *   - config Sensor option
  29  *   - config IgnoreSelected option
  30  *
  31  *   Henrique de Moraes Holschuh <hmh at debian.org>
  32  *   - use default libsensors config file on API 0x400
  33  *   - config SensorConfigFile option
  34  **/
  35
  36 #include "collectd.h"
  37 #include "common.h"
  38 #include "plugin.h"
  39 #include "configfile.h"
  40 #include "utils_ignorelist.h"
  41
  42 #if defined(HAVE_SENSORS_SENSORS_H)
  43 # include <sensors/sensors.h>
  44 #endif
  45
  46 #if !defined(SENSORS_API_VERSION)
  47 # define SENSORS_API_VERSION 0x000
  48 #endif
  49
  50 /*
  51  * The sensors library prior to version 3.0 (internal version 0x400) didn't
  52  * report the type of values, only a name. The following lists are there to
  53  * convert from the names to the type. They are not used with the new
  54  * interface.
  55  */
  56 #if SENSORS_API_VERSION < 0x400
  57 static char *sensor_type_name_map[] =
  58 {
  59 # define SENSOR_TYPE_VOLTAGE     0
  60         "voltage",
  61 # define SENSOR_TYPE_FANSPEED    1
  62         "fanspeed",
  63 # define SENSOR_TYPE_TEMPERATURE 2
  64         "temperature",
  65 # define SENSOR_TYPE_UNKNOWN     3
  66         NULL
  67 };
  68
  69 struct sensors_labeltypes_s
  70 {
  71         char *label;
  72         int type;
  73 };
  74 typedef struct sensors_labeltypes_s sensors_labeltypes_t;
  75
  76 /* finite list of known labels extracted from lm_sensors */
  77 static sensors_labeltypes_t known_features[] =
  78 {
  79         { "fan1", SENSOR_TYPE_FANSPEED },
  80         { "fan2", SENSOR_TYPE_FANSPEED },
  81         { "fan3", SENSOR_TYPE_FANSPEED },
  82         { "fan4", SENSOR_TYPE_FANSPEED },
  83         { "fan5", SENSOR_TYPE_FANSPEED },
  84         { "fan6", SENSOR_TYPE_FANSPEED },
  85         { "fan7", SENSOR_TYPE_FANSPEED },
  86         { "AIN2", SENSOR_TYPE_VOLTAGE },
  87         { "AIN1", SENSOR_TYPE_VOLTAGE },
  88         { "in10", SENSOR_TYPE_VOLTAGE },
  89         { "in9", SENSOR_TYPE_VOLTAGE },
  90         { "in8", SENSOR_TYPE_VOLTAGE },
  91         { "in7", SENSOR_TYPE_VOLTAGE },
  92         { "in6", SENSOR_TYPE_VOLTAGE },
  93         { "in5", SENSOR_TYPE_VOLTAGE },
  94         { "in4", SENSOR_TYPE_VOLTAGE },
  95         { "in3", SENSOR_TYPE_VOLTAGE },
  96         { "in2", SENSOR_TYPE_VOLTAGE },
  97         { "in0", SENSOR_TYPE_VOLTAGE },
  98         { "CPU_Temp", SENSOR_TYPE_TEMPERATURE },
  99         { "remote_temp", SENSOR_TYPE_TEMPERATURE },
 100         { "temp1", SENSOR_TYPE_TEMPERATURE },
 101         { "temp2", SENSOR_TYPE_TEMPERATURE },
 102         { "temp3", SENSOR_TYPE_TEMPERATURE },
 103         { "temp4", SENSOR_TYPE_TEMPERATURE },
 104         { "temp5", SENSOR_TYPE_TEMPERATURE },
 105         { "temp6", SENSOR_TYPE_TEMPERATURE },
 106         { "temp7", SENSOR_TYPE_TEMPERATURE },
 107         { "temp", SENSOR_TYPE_TEMPERATURE },
 108         { "Vccp2", SENSOR_TYPE_VOLTAGE },
 109         { "Vccp1", SENSOR_TYPE_VOLTAGE },
 110         { "vdd", SENSOR_TYPE_VOLTAGE },
 111         { "vid5", SENSOR_TYPE_VOLTAGE },
 112         { "vid4", SENSOR_TYPE_VOLTAGE },
 113         { "vid3", SENSOR_TYPE_VOLTAGE },
 114         { "vid2", SENSOR_TYPE_VOLTAGE },
 115         { "vid1", SENSOR_TYPE_VOLTAGE },
 116         { "vid", SENSOR_TYPE_VOLTAGE },
 117         { "vin4", SENSOR_TYPE_VOLTAGE },
 118         { "vin3", SENSOR_TYPE_VOLTAGE },
 119         { "vin2", SENSOR_TYPE_VOLTAGE },
 120         { "vin1", SENSOR_TYPE_VOLTAGE },
 121         { "voltbatt", SENSOR_TYPE_VOLTAGE },
 122         { "volt12", SENSOR_TYPE_VOLTAGE },
 123         { "volt5", SENSOR_TYPE_VOLTAGE },
 124         { "vrm", SENSOR_TYPE_VOLTAGE },
 125         { "5.0V", SENSOR_TYPE_VOLTAGE },
 126         { "5V", SENSOR_TYPE_VOLTAGE },
 127         { "3.3V", SENSOR_TYPE_VOLTAGE },
 128         { "2.5V", SENSOR_TYPE_VOLTAGE },
 129         { "2.0V", SENSOR_TYPE_VOLTAGE },
 130         { "12V", SENSOR_TYPE_VOLTAGE }
 131 };
 132 static int known_features_num = STATIC_ARRAY_SIZE (known_features);
 133 /* end new naming */
 134 #endif /* SENSORS_API_VERSION < 0x400 */
 135
 136 static const char *config_keys[] =
 137 {
 138         "Sensor",
 139         "IgnoreSelected",
 140         "SensorConfigFile"
 141 };
 142 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
 143
 144 #if SENSORS_API_VERSION < 0x400
 145 typedef struct featurelist
 146 {
 147         const sensors_chip_name    *chip;
 148         const sensors_feature_data *data;
 149         int                         type;
 150         struct featurelist         *next;
 151 } featurelist_t;
 152
 153 # ifndef SENSORS_CONF_PATH
 154 #  define SENSORS_CONF_PATH "/etc/sensors.conf"
 155 # endif
 156 static char *conffile = SENSORS_CONF_PATH;
 157 /* #endif SENSORS_API_VERSION < 0x400 */
 158
 159 #elif (SENSORS_API_VERSION >= 0x400) && (SENSORS_API_VERSION < 0x500)
 160 typedef struct featurelist
 161 {
 162         const sensors_chip_name    *chip;
 163         const sensors_feature      *feature;
 164         const sensors_subfeature   *subfeature;
 165         struct featurelist         *next;
 166 } featurelist_t;
 167
 168 static char *conffile = NULL;
 169 /* #endif (SENSORS_API_VERSION >= 0x400) && (SENSORS_API_VERSION < 0x500) */
 170
 171 #else /* if SENSORS_API_VERSION >= 0x500 */
 172 # error "This version of libsensors is not supported yet. Please report this " \
 173         "as bug."
 174 #endif
 175
 176 featurelist_t *first_feature = NULL;
 177 static ignorelist_t *sensor_list;
 178
 179 #if SENSORS_API_VERSION < 0x400
 180 /* full chip name logic borrowed from lm_sensors */
 181 static int sensors_snprintf_chip_name (char *buf, size_t buf_size,
 182                 const sensors_chip_name *chip)
 183 {
 184         int status = -1;
 185
 186         if (chip->bus == SENSORS_CHIP_NAME_BUS_ISA)
 187         {
 188                 status = ssnprintf (buf, buf_size,
 189                                 "%s-isa-%04x",
 190                                 chip->prefix,
 191                                 chip->addr);
 192         }
 193         else if (chip->bus == SENSORS_CHIP_NAME_BUS_DUMMY)
 194         {
 195                 status = snprintf (buf, buf_size, "%s-%s-%04x",
 196                                 chip->prefix,
 197                                 chip->busname,
 198                                 chip->addr);
 199         }
 200         else
 201         {
 202                 status = snprintf (buf, buf_size, "%s-i2c-%d-%02x",
 203                                 chip->prefix,
 204                                 chip->bus,
 205                                 chip->addr);
 206         }
 207
 208         return (status);
 209 } /* int sensors_snprintf_chip_name */
 210
 211 static int sensors_feature_name_to_type (const char *name)
 212 {
 213         int i;
 214
 215         /* Yes, this is slow, but it's only ever done during initialization, so
 216          * it's a one time cost.. */
 217         for (i = 0; i < known_features_num; i++)
 218                 if (strcasecmp (known_features[i].label, name) == 0)
 219                         return (known_features[i].type);
 220
 221         return (SENSOR_TYPE_UNKNOWN);
 222 } /* int sensors_feature_name_to_type */
 223 #endif
 224
 225 static int sensors_config (const char *key, const char *value)
 226 {
 227         if (sensor_list == NULL)
 228                 sensor_list = ignorelist_create (1);
 229
 230         /* TODO: This setting exists for compatibility with old versions of
 231          * lm-sensors. Remove support for those ancient versions in the next
 232          * major release. */
 233         if (strcasecmp (key, "SensorConfigFile") == 0)
 234         {
 235                 char *tmp = strdup (value);
 236                 if (tmp != NULL)
 237                 {
 238                         sfree (conffile);
 239                         conffile = tmp;
 240                 }
 241         }
 242         else if (strcasecmp (key, "Sensor") == 0)
 243         {
 244                 if (ignorelist_add (sensor_list, value))
 245                 {
 246                         ERROR ("sensors plugin: "
 247                                         "Cannot add value to ignorelist.");
 248                         return (1);
 249                 }
 250         }
 251         else if (strcasecmp (key, "IgnoreSelected") == 0)
 252         {
 253                 ignorelist_set_invert (sensor_list, 1);
 254                 if (IS_TRUE (value))
 255                         ignorelist_set_invert (sensor_list, 0);
 256         }
 257         else
 258         {
 259                 return (-1);
 260         }
 261
 262         return (0);
 263 }
 264
 265 void sensors_free_features (void)
 266 {
 267         featurelist_t *thisft;
 268         featurelist_t *nextft;
 269
 270         if (first_feature == NULL)
 271                 return;
 272
 273         sensors_cleanup ();
 274
 275         for (thisft = first_feature; thisft != NULL; thisft = nextft)
 276         {
 277                 nextft = thisft->next;
 278                 sfree (thisft);
 279         }
 280         first_feature = NULL;
 281 }
 282
 283 static int sensors_load_conf (void)
 284 {
 285         static int call_once = 0;
 286
 287         FILE *fh = NULL;
 288         featurelist_t *last_feature = NULL;
 289
 290         const sensors_chip_name *chip;
 291         int chip_num;
 292
 293         int status;
 294
 295         if (call_once)
 296                 return 0;
 297
 298         call_once = 1;
 299
 300         if (conffile != NULL)
 301         {
 302                 fh = fopen (conffile, "r");
 303                 if (fh == NULL)
 304                 {
 305                         char errbuf[1024];
 306                         ERROR ("sensors plugin: fopen(%s) failed: %s", conffile,
 307                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 308                         return (-1);
 309                 }
 310         }
 311
 312         status = sensors_init (fh);
 313         if (fh)
 314                 fclose (fh);
 315
 316         if (status != 0)
 317         {
 318                 ERROR ("sensors plugin: Cannot initialize sensors. "
 319                                 "Data will not be collected.");
 320                 return (-1);
 321         }
 322
 323 #if SENSORS_API_VERSION < 0x400
 324         chip_num = 0;
 325         while ((chip = sensors_get_detected_chips (&chip_num)) != NULL)
 326         {
 327                 int feature_num0 = 0;
 328                 int feature_num1 = 0;
 329
 330                 while (42)
 331                 {
 332                         const sensors_feature_data *feature;
 333                         int feature_type;
 334                         featurelist_t *fl;
 335
 336                         feature = sensors_get_all_features (*chip,
 337                                         &feature_num0, &feature_num1);
 338
 339                         /* Check if all features have been read. */
 340                         if (feature == NULL)
 341                                 break;
 342
 343                         /* "master features" only */
 344                         if (feature->mapping != SENSORS_NO_MAPPING)
 345                         {
 346                                 DEBUG ("sensors plugin: sensors_load_conf: "
 347                                                 "Ignoring subfeature `%s', "
 348                                                 "because (feature->mapping "
 349                                                 "!= SENSORS_NO_MAPPING).",
 350                                                 feature->name);
 351                                 continue;
 352                         }
 353
 354                         /* skip ignored in sensors.conf */
 355                         if (sensors_get_ignored (*chip, feature->number) == 0)
 356                         {
 357                                 DEBUG ("sensors plugin: sensors_load_conf: "
 358                                                 "Ignoring subfeature `%s', "
 359                                                 "because "
 360                                                 "`sensors_get_ignored' told "
 361                                                 "me so.",
 362                                                 feature->name);
 363                                 continue;
 364                         }
 365
 366                         feature_type = sensors_feature_name_to_type (
 367                                         feature->name);
 368                         if (feature_type == SENSOR_TYPE_UNKNOWN)
 369                         {
 370                                 DEBUG ("sensors plugin: sensors_load_conf: "
 371                                                 "Ignoring subfeature `%s', "
 372                                                 "because its type is "
 373                                                 "unknown.",
 374                                                 feature->name);
 375                                 continue;
 376                         }
 377
 378                         fl = (featurelist_t *) malloc (sizeof (featurelist_t));
 379                         if (fl == NULL)
 380                         {
 381                                 ERROR ("sensors plugin: malloc failed.");
 382                                 continue;
 383                         }
 384                         memset (fl, '\0', sizeof (featurelist_t));
 385
 386                         fl->chip = chip;
 387                         fl->data = feature;
 388                         fl->type = feature_type;
 389
 390                         if (first_feature == NULL)
 391                                 first_feature = fl;
 392                         else
 393                                 last_feature->next = fl;
 394                         last_feature = fl;
 395                 } /* while sensors_get_all_features */
 396         } /* while sensors_get_detected_chips */
 397 /* #endif SENSORS_API_VERSION < 0x400 */
 398
 399 #elif (SENSORS_API_VERSION >= 0x400) && (SENSORS_API_VERSION < 0x500)
 400         chip_num = 0;
 401         while ((chip = sensors_get_detected_chips (NULL, &chip_num)) != NULL)
 402         {
 403                 const sensors_feature *feature;
 404                 int feature_num = 0;
 405
 406                 while ((feature = sensors_get_features (chip, &feature_num)) != NULL)
 407                 {
 408                         const sensors_subfeature *subfeature;
 409                         int subfeature_num = 0;
 410
 411                         /* Only handle voltage, fanspeeds and temperatures */
 412                         if ((feature->type != SENSORS_FEATURE_IN)
 413                                         && (feature->type != SENSORS_FEATURE_FAN)
 414                                         && (feature->type != SENSORS_FEATURE_TEMP))
 415                         {
 416                                 DEBUG ("sensors plugin: sensors_load_conf: "
 417                                                 "Ignoring feature `%s', "
 418                                                 "because its type is not "
 419                                                 "supported.", feature->name);
 420                                 continue;
 421                         }
 422
 423                         while ((subfeature = sensors_get_all_subfeatures (chip,
 424                                                         feature, &subfeature_num)) != NULL)
 425                         {
 426                                 featurelist_t *fl;
 427
 428                                 if ((subfeature->type != SENSORS_SUBFEATURE_IN_INPUT)
 429                                                 && (subfeature->type != SENSORS_SUBFEATURE_FAN_INPUT)
 430                                                 && (subfeature->type != SENSORS_SUBFEATURE_TEMP_INPUT))
 431                                         continue;
 432
 433                                 fl = (featurelist_t *) malloc (sizeof (featurelist_t));
 434                                 if (fl == NULL)
 435                                 {
 436                                         ERROR ("sensors plugin: malloc failed.");
 437                                         continue;
 438                                 }
 439                                 memset (fl, '\0', sizeof (featurelist_t));
 440
 441                                 fl->chip = chip;
 442                                 fl->feature = feature;
 443                                 fl->subfeature = subfeature;
 444
 445                                 if (first_feature == NULL)
 446                                         first_feature = fl;
 447                                 else
 448                                         last_feature->next = fl;
 449                                 last_feature  = fl;
 450                         } /* while (subfeature) */
 451                 } /* while (feature) */
 452         } /* while (chip) */
 453 #endif /* (SENSORS_API_VERSION >= 0x400) && (SENSORS_API_VERSION < 0x500) */
 454
 455         if (first_feature == NULL)
 456         {
 457                 sensors_cleanup ();
 458                 INFO ("sensors plugin: lm_sensors reports no "
 459                                 "features. Data will not be collected.");
 460                 return (-1);
 461         }
 462
 463         return (0);
 464 } /* int sensors_load_conf */
 465
 466 static int sensors_shutdown (void)
 467 {
 468         sensors_free_features ();
 469         ignorelist_free (sensor_list);
 470
 471         return (0);
 472 } /* int sensors_shutdown */
 473
 474 static void sensors_submit (const char *plugin_instance,
 475                 const char *type, const char *type_instance,
 476                 double val)
 477 {
 478         char match_key[1024];
 479         int status;
 480
 481         value_t values[1];
 482         value_list_t vl = VALUE_LIST_INIT;
 483
 484         status = ssnprintf (match_key, sizeof (match_key), "%s/%s-%s",
 485                         plugin_instance, type, type_instance);
 486         if (status < 1)
 487                 return;
 488
 489         if (sensor_list != NULL)
 490         {
 491                 DEBUG ("sensors plugin: Checking ignorelist for `%s'", match_key);
 492                 if (ignorelist_match (sensor_list, match_key))
 493                         return;
 494         }
 495
 496         values[0].gauge = val;
 497
 498         vl.values = values;
 499         vl.values_len = 1;
 500
 501         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 502         sstrncpy (vl.plugin, "sensors", sizeof (vl.plugin));
 503         sstrncpy (vl.plugin_instance, plugin_instance,
 504                         sizeof (vl.plugin_instance));
 505         sstrncpy (vl.type, type, sizeof (vl.type));
 506         sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
 507
 508         plugin_dispatch_values (&vl);
 509 } /* void sensors_submit */
 510
 511 static int sensors_read (void)
 512 {
 513         featurelist_t *fl;
 514
 515         if (sensors_load_conf () != 0)
 516                 return (-1);
 517
 518 #if SENSORS_API_VERSION < 0x400
 519         for (fl = first_feature; fl != NULL; fl = fl->next)
 520         {
 521                 double value;
 522                 int status;
 523                 char plugin_instance[DATA_MAX_NAME_LEN];
 524                 char type_instance[DATA_MAX_NAME_LEN];
 525
 526                 status = sensors_get_feature (*fl->chip,
 527                                 fl->data->number, &value);
 528                 if (status < 0)
 529                         continue;
 530
 531                 status = sensors_snprintf_chip_name (plugin_instance,
 532                                 sizeof (plugin_instance), fl->chip);
 533                 if (status < 0)
 534                         continue;
 535
 536                 sstrncpy (type_instance, fl->data->name,
 537                                 sizeof (type_instance));
 538
 539                 sensors_submit (plugin_instance,
 540                                 sensor_type_name_map[fl->type],
 541                                 type_instance,
 542                                 value);
 543         } /* for fl = first_feature .. NULL */
 544 /* #endif SENSORS_API_VERSION < 0x400 */
 545
 546 #elif (SENSORS_API_VERSION >= 0x400) && (SENSORS_API_VERSION < 0x500)
 547         for (fl = first_feature; fl != NULL; fl = fl->next)
 548         {
 549                 double value;
 550                 int status;
 551                 char plugin_instance[DATA_MAX_NAME_LEN];
 552                 char type_instance[DATA_MAX_NAME_LEN];
 553                 const char *type;
 554
 555                 status = sensors_get_value (fl->chip,
 556                                 fl->subfeature->number, &value);
 557                 if (status < 0)
 558                         continue;
 559
 560                 status = sensors_snprintf_chip_name (plugin_instance,
 561                                 sizeof (plugin_instance), fl->chip);
 562                 if (status < 0)
 563                         continue;
 564
 565                 sstrncpy (type_instance, fl->feature->name,
 566                                 sizeof (type_instance));
 567
 568                 if (fl->feature->type == SENSORS_FEATURE_IN)
 569                         type = "voltage";
 570                 else if (fl->feature->type
 571                                 == SENSORS_FEATURE_FAN)
 572                         type = "fanspeed";
 573                 else if (fl->feature->type
 574                                 == SENSORS_FEATURE_TEMP)
 575                         type = "temperature";
 576                 else
 577                         continue;
 578
 579                 sensors_submit (plugin_instance, type, type_instance, value);
 580         } /* for fl = first_feature .. NULL */
 581 #endif /* (SENSORS_API_VERSION >= 0x400) && (SENSORS_API_VERSION < 0x500) */
 582
 583         return (0);
 584 } /* int sensors_read */
 585
 586 void module_register (void)
 587 {
 588         plugin_register_config ("sensors", sensors_config,
 589                         config_keys, config_keys_num);
 590         plugin_register_read ("sensors", sensors_read);
 591         plugin_register_shutdown ("sensors", sensors_shutdown);
 592 } /* void module_register */