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 collectd.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_POWER       3
  66         "power",
  67 # define SENSOR_TYPE_UNKNOWN     4
  68         NULL
  69 };
  70
  71 struct sensors_labeltypes_s
  72 {
  73         char *label;
  74         int type;
  75 };
  76 typedef struct sensors_labeltypes_s sensors_labeltypes_t;
  77
  78 /* finite list of known labels extracted from lm_sensors */
  79 static sensors_labeltypes_t known_features[] =
  80 {
  81         { "fan1", SENSOR_TYPE_FANSPEED },
  82         { "fan2", SENSOR_TYPE_FANSPEED },
  83         { "fan3", SENSOR_TYPE_FANSPEED },
  84         { "fan4", SENSOR_TYPE_FANSPEED },
  85         { "fan5", SENSOR_TYPE_FANSPEED },
  86         { "fan6", SENSOR_TYPE_FANSPEED },
  87         { "fan7", SENSOR_TYPE_FANSPEED },
  88         { "AIN2", SENSOR_TYPE_VOLTAGE },
  89         { "AIN1", SENSOR_TYPE_VOLTAGE },
  90         { "in10", SENSOR_TYPE_VOLTAGE },
  91         { "in9", SENSOR_TYPE_VOLTAGE },
  92         { "in8", SENSOR_TYPE_VOLTAGE },
  93         { "in7", SENSOR_TYPE_VOLTAGE },
  94         { "in6", SENSOR_TYPE_VOLTAGE },
  95         { "in5", SENSOR_TYPE_VOLTAGE },
  96         { "in4", SENSOR_TYPE_VOLTAGE },
  97         { "in3", SENSOR_TYPE_VOLTAGE },
  98         { "in2", SENSOR_TYPE_VOLTAGE },
  99         { "in0", SENSOR_TYPE_VOLTAGE },
 100         { "CPU_Temp", SENSOR_TYPE_TEMPERATURE },
 101         { "remote_temp", SENSOR_TYPE_TEMPERATURE },
 102         { "temp1", SENSOR_TYPE_TEMPERATURE },
 103         { "temp2", SENSOR_TYPE_TEMPERATURE },
 104         { "temp3", SENSOR_TYPE_TEMPERATURE },
 105         { "temp4", SENSOR_TYPE_TEMPERATURE },
 106         { "temp5", SENSOR_TYPE_TEMPERATURE },
 107         { "temp6", SENSOR_TYPE_TEMPERATURE },
 108         { "temp7", SENSOR_TYPE_TEMPERATURE },
 109         { "temp", SENSOR_TYPE_TEMPERATURE },
 110         { "Vccp2", SENSOR_TYPE_VOLTAGE },
 111         { "Vccp1", SENSOR_TYPE_VOLTAGE },
 112         { "vdd", SENSOR_TYPE_VOLTAGE },
 113         { "vid5", SENSOR_TYPE_VOLTAGE },
 114         { "vid4", SENSOR_TYPE_VOLTAGE },
 115         { "vid3", SENSOR_TYPE_VOLTAGE },
 116         { "vid2", SENSOR_TYPE_VOLTAGE },
 117         { "vid1", SENSOR_TYPE_VOLTAGE },
 118         { "vid", SENSOR_TYPE_VOLTAGE },
 119         { "vin4", SENSOR_TYPE_VOLTAGE },
 120         { "vin3", SENSOR_TYPE_VOLTAGE },
 121         { "vin2", SENSOR_TYPE_VOLTAGE },
 122         { "vin1", SENSOR_TYPE_VOLTAGE },
 123         { "voltbatt", SENSOR_TYPE_VOLTAGE },
 124         { "volt12", SENSOR_TYPE_VOLTAGE },
 125         { "volt5", SENSOR_TYPE_VOLTAGE },
 126         { "vrm", SENSOR_TYPE_VOLTAGE },
 127         { "5.0V", SENSOR_TYPE_VOLTAGE },
 128         { "5V", SENSOR_TYPE_VOLTAGE },
 129         { "3.3V", SENSOR_TYPE_VOLTAGE },
 130         { "2.5V", SENSOR_TYPE_VOLTAGE },
 131         { "2.0V", SENSOR_TYPE_VOLTAGE },
 132         { "12V", SENSOR_TYPE_VOLTAGE },
 133         { "power1", SENSOR_TYPE_POWER }
 134 };
 135 static int known_features_num = STATIC_ARRAY_SIZE (known_features);
 136 /* end new naming */
 137 #endif /* SENSORS_API_VERSION < 0x400 */
 138
 139 static const char *config_keys[] =
 140 {
 141         "Sensor",
 142         "IgnoreSelected",
 143         "SensorConfigFile"
 144 };
 145 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
 146
 147 #if SENSORS_API_VERSION < 0x400
 148 typedef struct featurelist
 149 {
 150         const sensors_chip_name    *chip;
 151         const sensors_feature_data *data;
 152         int                         type;
 153         struct featurelist         *next;
 154 } featurelist_t;
 155
 156 # ifndef SENSORS_CONF_PATH
 157 #  define SENSORS_CONF_PATH "/etc/sensors.conf"
 158 # endif
 159 static char *conffile = SENSORS_CONF_PATH;
 160 /* #endif SENSORS_API_VERSION < 0x400 */
 161
 162 #elif (SENSORS_API_VERSION >= 0x400) && (SENSORS_API_VERSION < 0x500)
 163 typedef struct featurelist
 164 {
 165         const sensors_chip_name    *chip;
 166         const sensors_feature      *feature;
 167         const sensors_subfeature   *subfeature;
 168         struct featurelist         *next;
 169 } featurelist_t;
 170
 171 static char *conffile = NULL;
 172 /* #endif (SENSORS_API_VERSION >= 0x400) && (SENSORS_API_VERSION < 0x500) */
 173
 174 #else /* if SENSORS_API_VERSION >= 0x500 */
 175 # error "This version of libsensors is not supported yet. Please report this " \
 176         "as bug."
 177 #endif
 178
 179 featurelist_t *first_feature = NULL;
 180 static ignorelist_t *sensor_list;
 181
 182 #if SENSORS_API_VERSION < 0x400
 183 /* full chip name logic borrowed from lm_sensors */
 184 static int sensors_snprintf_chip_name (char *buf, size_t buf_size,
 185                 const sensors_chip_name *chip)
 186 {
 187         int status = -1;
 188
 189         if (chip->bus == SENSORS_CHIP_NAME_BUS_ISA)
 190         {
 191                 status = ssnprintf (buf, buf_size,
 192                                 "%s-isa-%04x",
 193                                 chip->prefix,
 194                                 chip->addr);
 195         }
 196         else if (chip->bus == SENSORS_CHIP_NAME_BUS_DUMMY)
 197         {
 198                 status = snprintf (buf, buf_size, "%s-%s-%04x",
 199                                 chip->prefix,
 200                                 chip->busname,
 201                                 chip->addr);
 202         }
 203         else
 204         {
 205                 status = snprintf (buf, buf_size, "%s-i2c-%d-%02x",
 206                                 chip->prefix,
 207                                 chip->bus,
 208                                 chip->addr);
 209         }
 210
 211         return (status);
 212 } /* int sensors_snprintf_chip_name */
 213
 214 static int sensors_feature_name_to_type (const char *name)
 215 {
 216         int i;
 217
 218         /* Yes, this is slow, but it's only ever done during initialization, so
 219          * it's a one time cost.. */
 220         for (i = 0; i < known_features_num; i++)
 221                 if (strcasecmp (known_features[i].label, name) == 0)
 222                         return (known_features[i].type);
 223
 224         return (SENSOR_TYPE_UNKNOWN);
 225 } /* int sensors_feature_name_to_type */
 226 #endif
 227
 228 static int sensors_config (const char *key, const char *value)
 229 {
 230         if (sensor_list == NULL)
 231                 sensor_list = ignorelist_create (1);
 232
 233         /* TODO: This setting exists for compatibility with old versions of
 234          * lm-sensors. Remove support for those ancient versions in the next
 235          * major release. */
 236         if (strcasecmp (key, "SensorConfigFile") == 0)
 237         {
 238                 char *tmp = strdup (value);
 239                 if (tmp != NULL)
 240                 {
 241                         sfree (conffile);
 242                         conffile = tmp;
 243                 }
 244         }
 245         else if (strcasecmp (key, "Sensor") == 0)
 246         {
 247                 if (ignorelist_add (sensor_list, value))
 248                 {
 249                         ERROR ("sensors plugin: "
 250                                         "Cannot add value to ignorelist.");
 251                         return (1);
 252                 }
 253         }
 254         else if (strcasecmp (key, "IgnoreSelected") == 0)
 255         {
 256                 ignorelist_set_invert (sensor_list, 1);
 257                 if (IS_TRUE (value))
 258                         ignorelist_set_invert (sensor_list, 0);
 259         }
 260         else
 261         {
 262                 return (-1);
 263         }
 264
 265         return (0);
 266 }
 267
 268 static void sensors_free_features (void)
 269 {
 270         featurelist_t *thisft;
 271         featurelist_t *nextft;
 272
 273         if (first_feature == NULL)
 274                 return;
 275
 276         sensors_cleanup ();
 277
 278         for (thisft = first_feature; thisft != NULL; thisft = nextft)
 279         {
 280                 nextft = thisft->next;
 281                 sfree (thisft);
 282         }
 283         first_feature = NULL;
 284 }
 285
 286 static int sensors_load_conf (void)
 287 {
 288         static int call_once = 0;
 289
 290         FILE *fh = NULL;
 291         featurelist_t *last_feature = NULL;
 292
 293         const sensors_chip_name *chip;
 294         int chip_num;
 295
 296         int status;
 297
 298         if (call_once)
 299                 return 0;
 300
 301         call_once = 1;
 302
 303         if (conffile != NULL)
 304         {
 305                 fh = fopen (conffile, "r");
 306                 if (fh == NULL)
 307                 {
 308                         char errbuf[1024];
 309                         ERROR ("sensors plugin: fopen(%s) failed: %s", conffile,
 310                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 311                         return (-1);
 312                 }
 313         }
 314
 315         status = sensors_init (fh);
 316         if (fh)
 317                 fclose (fh);
 318
 319         if (status != 0)
 320         {
 321                 ERROR ("sensors plugin: Cannot initialize sensors. "
 322                                 "Data will not be collected.");
 323                 return (-1);
 324         }
 325
 326 #if SENSORS_API_VERSION < 0x400
 327         chip_num = 0;
 328         while ((chip = sensors_get_detected_chips (&chip_num)) != NULL)
 329         {
 330                 int feature_num0 = 0;
 331                 int feature_num1 = 0;
 332
 333                 while (42)
 334                 {
 335                         const sensors_feature_data *feature;
 336                         int feature_type;
 337                         featurelist_t *fl;
 338
 339                         feature = sensors_get_all_features (*chip,
 340                                         &feature_num0, &feature_num1);
 341
 342                         /* Check if all features have been read. */
 343                         if (feature == NULL)
 344                                 break;
 345
 346                         /* "master features" only */
 347                         if (feature->mapping != SENSORS_NO_MAPPING)
 348                         {
 349                                 DEBUG ("sensors plugin: sensors_load_conf: "
 350                                                 "Ignoring subfeature `%s', "
 351                                                 "because (feature->mapping "
 352                                                 "!= SENSORS_NO_MAPPING).",
 353                                                 feature->name);
 354                                 continue;
 355                         }
 356
 357                         /* skip ignored in sensors.conf */
 358                         if (sensors_get_ignored (*chip, feature->number) == 0)
 359                         {
 360                                 DEBUG ("sensors plugin: sensors_load_conf: "
 361                                                 "Ignoring subfeature `%s', "
 362                                                 "because "
 363                                                 "`sensors_get_ignored' told "
 364                                                 "me so.",
 365                                                 feature->name);
 366                                 continue;
 367                         }
 368
 369                         feature_type = sensors_feature_name_to_type (
 370                                         feature->name);
 371                         if (feature_type == SENSOR_TYPE_UNKNOWN)
 372                         {
 373                                 DEBUG ("sensors plugin: sensors_load_conf: "
 374                                                 "Ignoring subfeature `%s', "
 375                                                 "because its type is "
 376                                                 "unknown.",
 377                                                 feature->name);
 378                                 continue;
 379                         }
 380
 381                         fl = (featurelist_t *) malloc (sizeof (featurelist_t));
 382                         if (fl == NULL)
 383                         {
 384                                 ERROR ("sensors plugin: malloc failed.");
 385                                 continue;
 386                         }
 387                         memset (fl, '\0', sizeof (featurelist_t));
 388
 389                         fl->chip = chip;
 390                         fl->data = feature;
 391                         fl->type = feature_type;
 392
 393                         if (first_feature == NULL)
 394                                 first_feature = fl;
 395                         else
 396                                 last_feature->next = fl;
 397                         last_feature = fl;
 398                 } /* while sensors_get_all_features */
 399         } /* while sensors_get_detected_chips */
 400 /* #endif SENSORS_API_VERSION < 0x400 */
 401
 402 #elif (SENSORS_API_VERSION >= 0x400) && (SENSORS_API_VERSION < 0x500)
 403         chip_num = 0;
 404         while ((chip = sensors_get_detected_chips (NULL, &chip_num)) != NULL)
 405         {
 406                 const sensors_feature *feature;
 407                 int feature_num = 0;
 408
 409                 while ((feature = sensors_get_features (chip, &feature_num)) != NULL)
 410                 {
 411                         const sensors_subfeature *subfeature;
 412                         int subfeature_num = 0;
 413
 414                         /* Only handle voltage, fanspeeds and temperatures */
 415                         if ((feature->type != SENSORS_FEATURE_IN)
 416                                         && (feature->type != SENSORS_FEATURE_FAN)
 417                                         && (feature->type != SENSORS_FEATURE_TEMP)
 418                                         && (feature->type != SENSORS_FEATURE_POWER))
 419                         {
 420                                 DEBUG ("sensors plugin: sensors_load_conf: "
 421                                                 "Ignoring feature `%s', "
 422                                                 "because its type is not "
 423                                                 "supported.", feature->name);
 424                                 continue;
 425                         }
 426
 427                         while ((subfeature = sensors_get_all_subfeatures (chip,
 428                                                         feature, &subfeature_num)) != NULL)
 429                         {
 430                                 featurelist_t *fl;
 431
 432                                 if ((subfeature->type != SENSORS_SUBFEATURE_IN_INPUT)
 433                                                 && (subfeature->type != SENSORS_SUBFEATURE_FAN_INPUT)
 434                                                 && (subfeature->type != SENSORS_SUBFEATURE_TEMP_INPUT)
 435                                                 && (subfeature->type != SENSORS_SUBFEATURE_POWER_INPUT))
 436                                         continue;
 437
 438                                 fl = (featurelist_t *) malloc (sizeof (featurelist_t));
 439                                 if (fl == NULL)
 440                                 {
 441                                         ERROR ("sensors plugin: malloc failed.");
 442                                         continue;
 443                                 }
 444                                 memset (fl, '\0', sizeof (featurelist_t));
 445
 446                                 fl->chip = chip;
 447                                 fl->feature = feature;
 448                                 fl->subfeature = subfeature;
 449
 450                                 if (first_feature == NULL)
 451                                         first_feature = fl;
 452                                 else
 453                                         last_feature->next = fl;
 454                                 last_feature  = fl;
 455                         } /* while (subfeature) */
 456                 } /* while (feature) */
 457         } /* while (chip) */
 458 #endif /* (SENSORS_API_VERSION >= 0x400) && (SENSORS_API_VERSION < 0x500) */
 459
 460         if (first_feature == NULL)
 461         {
 462                 sensors_cleanup ();
 463                 INFO ("sensors plugin: lm_sensors reports no "
 464                                 "features. Data will not be collected.");
 465                 return (-1);
 466         }
 467
 468         return (0);
 469 } /* int sensors_load_conf */
 470
 471 static int sensors_shutdown (void)
 472 {
 473         sensors_free_features ();
 474         ignorelist_free (sensor_list);
 475
 476         return (0);
 477 } /* int sensors_shutdown */
 478
 479 static void sensors_submit (const char *plugin_instance,
 480                 const char *type, const char *type_instance,
 481                 double val)
 482 {
 483         char match_key[1024];
 484         int status;
 485
 486         value_t values[1];
 487         value_list_t vl = VALUE_LIST_INIT;
 488
 489         status = ssnprintf (match_key, sizeof (match_key), "%s/%s-%s",
 490                         plugin_instance, type, type_instance);
 491         if (status < 1)
 492                 return;
 493
 494         if (sensor_list != NULL)
 495         {
 496                 DEBUG ("sensors plugin: Checking ignorelist for `%s'", match_key);
 497                 if (ignorelist_match (sensor_list, match_key))
 498                         return;
 499         }
 500
 501         values[0].gauge = val;
 502
 503         vl.values = values;
 504         vl.values_len = 1;
 505
 506         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 507         sstrncpy (vl.plugin, "sensors", sizeof (vl.plugin));
 508         sstrncpy (vl.plugin_instance, plugin_instance,
 509                         sizeof (vl.plugin_instance));
 510         sstrncpy (vl.type, type, sizeof (vl.type));
 511         sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
 512
 513         plugin_dispatch_values (&vl);
 514 } /* void sensors_submit */
 515
 516 static int sensors_read (void)
 517 {
 518         featurelist_t *fl;
 519
 520         if (sensors_load_conf () != 0)
 521                 return (-1);
 522
 523 #if SENSORS_API_VERSION < 0x400
 524         for (fl = first_feature; fl != NULL; fl = fl->next)
 525         {
 526                 double value;
 527                 int status;
 528                 char plugin_instance[DATA_MAX_NAME_LEN];
 529                 char type_instance[DATA_MAX_NAME_LEN];
 530
 531                 status = sensors_get_feature (*fl->chip,
 532                                 fl->data->number, &value);
 533                 if (status < 0)
 534                         continue;
 535
 536                 status = sensors_snprintf_chip_name (plugin_instance,
 537                                 sizeof (plugin_instance), fl->chip);
 538                 if (status < 0)
 539                         continue;
 540
 541                 sstrncpy (type_instance, fl->data->name,
 542                                 sizeof (type_instance));
 543
 544                 sensors_submit (plugin_instance,
 545                                 sensor_type_name_map[fl->type],
 546                                 type_instance,
 547                                 value);
 548         } /* for fl = first_feature .. NULL */
 549 /* #endif SENSORS_API_VERSION < 0x400 */
 550
 551 #elif (SENSORS_API_VERSION >= 0x400) && (SENSORS_API_VERSION < 0x500)
 552         for (fl = first_feature; fl != NULL; fl = fl->next)
 553         {
 554                 double value;
 555                 int status;
 556                 char plugin_instance[DATA_MAX_NAME_LEN];
 557                 char type_instance[DATA_MAX_NAME_LEN];
 558                 const char *type;
 559
 560                 status = sensors_get_value (fl->chip,
 561                                 fl->subfeature->number, &value);
 562                 if (status < 0)
 563                         continue;
 564
 565                 status = sensors_snprintf_chip_name (plugin_instance,
 566                                 sizeof (plugin_instance), fl->chip);
 567                 if (status < 0)
 568                         continue;
 569
 570                 sstrncpy (type_instance, fl->feature->name,
 571                                 sizeof (type_instance));
 572
 573                 if (fl->feature->type == SENSORS_FEATURE_IN)
 574                         type = "voltage";
 575                 else if (fl->feature->type
 576                                 == SENSORS_FEATURE_FAN)
 577                         type = "fanspeed";
 578                 else if (fl->feature->type
 579                                 == SENSORS_FEATURE_TEMP)
 580                         type = "temperature";
 581                 else if (fl->feature->type
 582                                 == SENSORS_FEATURE_POWER)
 583                         type = "power";
 584                 else
 585                         continue;
 586
 587                 sensors_submit (plugin_instance, type, type_instance, value);
 588         } /* for fl = first_feature .. NULL */
 589 #endif /* (SENSORS_API_VERSION >= 0x400) && (SENSORS_API_VERSION < 0x500) */
 590
 591         return (0);
 592 } /* int sensors_read */
 593
 594 void module_register (void)
 595 {
 596         plugin_register_config ("sensors", sensors_config,
 597                         config_keys, config_keys_num);
 598         plugin_register_read ("sensors", sensors_read);
 599         plugin_register_shutdown ("sensors", sensors_shutdown);
 600 } /* void module_register */