src/sensors.c

   1 /**
   2  * collectd - src/sensors.c
   3  * Copyright (C) 2005,2006  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; either version 2 of the License, or (at your
   8  * option) any later version.
   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
  32 #include "collectd.h"
  33 #include "common.h"
  34 #include "plugin.h"
  35 #include "configfile.h"
  36 #include "config_list.h"
  37 #include "utils_debug.h"
  38
  39 #define MODULE_NAME "sensors"
  40 #define MODULE_NAME_VOLTAGE MODULE_NAME"_voltage"
  41
  42 #if defined(HAVE_SENSORS_SENSORS_H)
  43 # include <sensors/sensors.h>
  44 #else
  45 # undef HAVE_LIBSENSORS
  46 #endif
  47
  48 #if defined(HAVE_LIBSENSORS)
  49 # define SENSORS_HAVE_READ 1
  50 #else
  51 # define SENSORS_HAVE_READ 0
  52 #endif
  53
  54 #define BUFSIZE 512
  55
  56 /* temperature and fan sensors */
  57 static char *ds_def[] =
  58 {
  59         "DS:value:GAUGE:"COLLECTD_HEARTBEAT":U:U",
  60         NULL
  61 };
  62 static int ds_num = 1;
  63
  64 /* voltage sensors */
  65 static char *sensor_voltage_ds_def[] =
  66 {
  67         "DS:voltage:GAUGE:"COLLECTD_HEARTBEAT":U:U",
  68         NULL
  69 };
  70 static int sensor_voltage_ds_num = 1;
  71
  72 /* old naming */
  73 static char *old_filename_format = "sensors-%s.rrd";
  74 /* end old naming */
  75
  76 /* new naming <chip-bus-address/type-feature */
  77 static char *extended_filename_format = "lm_sensors-%s.rrd";
  78
  79 #define SENSOR_TYPE_UNKNOWN 0
  80 #define SENSOR_TYPE_VOLTAGE 1
  81 #define SENSOR_TYPE_FANSPEED 2
  82 #define SENSOR_TYPE_TEMPERATURE 3
  83
  84 static char *sensor_type_prefix[] =
  85 {
  86         "unknown",
  87         "voltage",
  88         "fanspeed",
  89         "temperature",
  90         NULL
  91 };
  92
  93 typedef struct sensors_labeltypes {
  94         char *label;
  95         int type;
  96 } sensors_labeltypes;
  97
  98 /*
  99  * finite list of known labels extracted from lm_sensors
 100  */
 101 static sensors_labeltypes known_features[] =
 102 {
 103         { "fan1", SENSOR_TYPE_FANSPEED },
 104         { "fan2", SENSOR_TYPE_FANSPEED },
 105         { "fan3", SENSOR_TYPE_FANSPEED },
 106         { "fan4", SENSOR_TYPE_FANSPEED },
 107         { "fan5", SENSOR_TYPE_FANSPEED },
 108         { "fan6", SENSOR_TYPE_FANSPEED },
 109         { "fan7", SENSOR_TYPE_FANSPEED },
 110         { "AIN2", SENSOR_TYPE_VOLTAGE },
 111         { "AIN1", SENSOR_TYPE_VOLTAGE },
 112         { "in10", SENSOR_TYPE_VOLTAGE },
 113         { "in9", SENSOR_TYPE_VOLTAGE },
 114         { "in8", SENSOR_TYPE_VOLTAGE },
 115         { "in7", SENSOR_TYPE_VOLTAGE },
 116         { "in6", SENSOR_TYPE_VOLTAGE },
 117         { "in5", SENSOR_TYPE_VOLTAGE },
 118         { "in4", SENSOR_TYPE_VOLTAGE },
 119         { "in3", SENSOR_TYPE_VOLTAGE },
 120         { "in2", SENSOR_TYPE_VOLTAGE },
 121         { "in0", SENSOR_TYPE_VOLTAGE },
 122         { "CPU_Temp", SENSOR_TYPE_TEMPERATURE },
 123         { "remote_temp", SENSOR_TYPE_TEMPERATURE },
 124         { "temp1", SENSOR_TYPE_TEMPERATURE },
 125         { "temp2", SENSOR_TYPE_TEMPERATURE },
 126         { "temp3", SENSOR_TYPE_TEMPERATURE },
 127         { "temp4", SENSOR_TYPE_TEMPERATURE },
 128         { "temp5", SENSOR_TYPE_TEMPERATURE },
 129         { "temp6", SENSOR_TYPE_TEMPERATURE },
 130         { "temp7", SENSOR_TYPE_TEMPERATURE },
 131         { "temp", SENSOR_TYPE_TEMPERATURE },
 132         { "Vccp2", SENSOR_TYPE_VOLTAGE },
 133         { "Vccp1", SENSOR_TYPE_VOLTAGE },
 134         { "vdd", SENSOR_TYPE_VOLTAGE },
 135         { "vid5", SENSOR_TYPE_VOLTAGE },
 136         { "vid4", SENSOR_TYPE_VOLTAGE },
 137         { "vid3", SENSOR_TYPE_VOLTAGE },
 138         { "vid2", SENSOR_TYPE_VOLTAGE },
 139         { "vid1", SENSOR_TYPE_VOLTAGE },
 140         { "vid", SENSOR_TYPE_VOLTAGE },
 141         { "vin4", SENSOR_TYPE_VOLTAGE },
 142         { "vin3", SENSOR_TYPE_VOLTAGE },
 143         { "vin2", SENSOR_TYPE_VOLTAGE },
 144         { "vin1", SENSOR_TYPE_VOLTAGE },
 145         { "voltbatt", SENSOR_TYPE_VOLTAGE },
 146         { "volt12", SENSOR_TYPE_VOLTAGE },
 147         { "volt5", SENSOR_TYPE_VOLTAGE },
 148         { "vrm", SENSOR_TYPE_VOLTAGE },
 149         { "5.0V", SENSOR_TYPE_VOLTAGE },
 150         { "5V", SENSOR_TYPE_VOLTAGE },
 151         { "3.3V", SENSOR_TYPE_VOLTAGE },
 152         { "2.5V", SENSOR_TYPE_VOLTAGE },
 153         { "2.0V", SENSOR_TYPE_VOLTAGE },
 154         { "12V", SENSOR_TYPE_VOLTAGE },
 155         { 0, -1 }
 156 };
 157 /* end new naming */
 158
 159 static char *config_keys[] =
 160 {
 161         "Sensor",
 162         "IgnoreSelected",
 163         "ExtendedSensorNaming",
 164         NULL
 165 };
 166 static int config_keys_num = 3;
 167
 168 static configlist_t *sensor_list;
 169
 170 /*
 171  * sensor_extended_naming:
 172  * 0 => default is to create chip-feature
 173  * 1 => use new naming scheme chip-bus-address/type-feature
 174  */
 175 static int sensor_extended_naming = 0;
 176
 177 #ifdef HAVE_LIBSENSORS
 178 typedef struct featurelist
 179 {
 180         const sensors_chip_name    *chip;
 181         const sensors_feature_data *data;
 182         int                         type;
 183         struct featurelist         *next;
 184 } featurelist_t;
 185
 186 featurelist_t *first_feature = NULL;
 187 #endif /* defined (HAVE_LIBSENSORS) */
 188
 189 static int sensors_config (char *key, char *value)
 190 {
 191         if (sensor_list == NULL)
 192                 sensor_list = configlist_init();
 193
 194         if (strcasecmp (key, "Sensor") == 0)
 195         {
 196                 if (!configlist_add (sensor_list, value))
 197                 {
 198                         syslog (LOG_EMERG, "Cannot add value.");
 199                         return (1);
 200                 }
 201         }
 202         else if (strcasecmp (key, "IgnoreSelected") == 0)
 203         {
 204                 if ((strcasecmp (value, "True") == 0)
 205                                 || (strcasecmp (value, "Yes") == 0)
 206                                 || (strcasecmp (value, "On") == 0))
 207                         configlist_ignore (sensor_list, 1);
 208         }
 209         else if (strcasecmp (key, "ExtendedSensorNaming") == 0)
 210         {
 211                 if ((strcasecmp (value, "True") == 0)
 212                                 || (strcasecmp (value, "Yes") == 0)
 213                                 || (strcasecmp (value, "On") == 0))
 214                         sensor_extended_naming = 1;
 215                 else
 216                         sensor_extended_naming = 0;
 217         }
 218         else
 219         {
 220                 return (-1);
 221         }
 222
 223         return (0);
 224 }
 225
 226 static void collectd_sensors_init (void)
 227 {
 228 #ifdef HAVE_LIBSENSORS
 229         FILE *fh;
 230         featurelist_t *last_feature = NULL;
 231         featurelist_t *new_feature;
 232
 233         const sensors_chip_name *chip;
 234         int chip_num;
 235
 236         const sensors_feature_data *data;
 237         int data_num0, data_num1;
 238
 239         new_feature = first_feature;
 240         while (new_feature != NULL)
 241         {
 242                 last_feature = new_feature->next;
 243                 free (new_feature);
 244                 new_feature = last_feature;
 245         }
 246
 247 #ifdef assert
 248         assert (new_feature == NULL);
 249         assert (last_feature == NULL);
 250 #endif
 251
 252         if ((fh = fopen ("/etc/sensors.conf", "r")) == NULL)
 253                 return;
 254
 255         if (sensors_init (fh))
 256         {
 257                 fclose (fh);
 258                 syslog (LOG_ERR, "sensors: Cannot initialize sensors. "
 259                                 "Data will not be collected.");
 260                 return;
 261         }
 262
 263         fclose (fh);
 264
 265         chip_num = 0;
 266         while ((chip = sensors_get_detected_chips (&chip_num)) != NULL)
 267         {
 268                 data = NULL;
 269                 data_num0 = data_num1 = 0;
 270
 271                 while ((data = sensors_get_all_features (*chip, &data_num0, &data_num1))
 272                                 != NULL)
 273                 {
 274                         int i;
 275
 276                         /* "master features" only */
 277                         if (data->mapping != SENSORS_NO_MAPPING)
 278                                 continue;
 279
 280                         /* Only known features */
 281                         for (i = 0; known_features[i].type >= 0; i++)
 282                         {
 283                                 if (strcmp (data->name, known_features[i].label) != 0)
 284                                         continue;
 285
 286                                 /* skip ignored in sensors.conf */
 287                                 if (sensors_get_ignored (*chip, data->number) == 0)
 288                                         break;
 289
 290                                 DBG ("Adding feature: %s-%s-%s",
 291                                                 chip->prefix,
 292                                                 sensor_type_prefix[known_features[i].type],
 293                                                 data->name);
 294
 295                                 if ((new_feature = (featurelist_t *) malloc (sizeof (featurelist_t))) == NULL)
 296                                 {
 297                                         DBG ("sensors plugin: malloc: %s",
 298                                                         strerror (errno));
 299                                         syslog (LOG_ERR, "sensors plugin: malloc: %s",
 300                                                         strerror (errno));
 301                                         break;
 302                                 }
 303
 304                                 new_feature->chip = chip;
 305                                 new_feature->data = data;
 306                                 new_feature->type = known_features[i].type;
 307                                 new_feature->next = NULL;
 308
 309                                 if (first_feature == NULL)
 310                                 {
 311                                         first_feature = new_feature;
 312                                         last_feature  = new_feature;
 313                                 }
 314                                 else
 315                                 {
 316                                         last_feature->next = new_feature;
 317                                         last_feature = new_feature;
 318                                 }
 319
 320                                 /* stop searching known features at first found */
 321                                 break;
 322                         } /* for i */
 323                 } /* while sensors_get_all_features */
 324         } /* while sensors_get_detected_chips */
 325
 326         if (first_feature == NULL)
 327                 sensors_cleanup ();
 328 #endif /* defined(HAVE_LIBSENSORS) */
 329
 330         return;
 331 }
 332
 333 static void sensors_voltage_write (char *host, char *inst, char *val)
 334 {
 335         char file[BUFSIZE];
 336         int status;
 337
 338         /* skip ignored in our config */
 339         if (configlist_ignored (sensor_list, inst))
 340                 return;
 341
 342         /* extended sensor naming */
 343         if(sensor_extended_naming)
 344                 status = snprintf (file, BUFSIZE, extended_filename_format, inst);
 345         else
 346                 status = snprintf (file, BUFSIZE, old_filename_format, inst);
 347
 348         if ((status < 1) || (status >= BUFSIZE))
 349                 return;
 350
 351         rrd_update_file (host, file, val, sensor_voltage_ds_def, sensor_voltage_ds_num);
 352 }
 353
 354 static void sensors_write (char *host, char *inst, char *val)
 355 {
 356         char file[BUFSIZE];
 357         int status;
 358
 359         /* skip ignored in our config */
 360         if (configlist_ignored (sensor_list, inst))
 361                 return;
 362
 363         /* extended sensor naming */
 364         if (sensor_extended_naming)
 365                 status = snprintf (file, BUFSIZE, extended_filename_format, inst);
 366         else
 367                 status = snprintf (file, BUFSIZE, old_filename_format, inst);
 368
 369         if ((status < 1) || (status >= BUFSIZE))
 370                 return;
 371
 372         rrd_update_file (host, file, val, ds_def, ds_num);
 373 }
 374
 375 #if SENSORS_HAVE_READ
 376 static void sensors_submit (const char *feat_name,
 377                 const char *chip_prefix, double value, int type)
 378 {
 379         char buf[BUFSIZE];
 380         char inst[BUFSIZE];
 381
 382         if (snprintf (inst, BUFSIZE, "%s-%s", chip_prefix, feat_name)
 383                         >= BUFSIZE)
 384                 return;
 385
 386         /* skip ignored in our config */
 387         if (configlist_ignored (sensor_list, inst))
 388                 return;
 389
 390         if (snprintf (buf, BUFSIZE, "%u:%.3f", (unsigned int) curtime,
 391                                 value) >= BUFSIZE)
 392                 return;
 393
 394         if (type == SENSOR_TYPE_VOLTAGE)
 395         {
 396                 DBG ("%s: %s/%s, %s", MODULE_NAME_VOLTAGE,
 397                                 sensor_type_prefix[type], inst, buf);
 398                 plugin_submit (MODULE_NAME_VOLTAGE, inst, buf);
 399         }
 400         else
 401         {
 402                 DBG ("%s: %s/%s, %s", MODULE_NAME,
 403                                 sensor_type_prefix[type], inst, buf);
 404                 plugin_submit (MODULE_NAME, inst, buf);
 405         }
 406 }
 407
 408 static void sensors_read (void)
 409 {
 410         featurelist_t *feature;
 411         double value;
 412         char chip_fullprefix[BUFSIZE];
 413
 414         for (feature = first_feature; feature != NULL; feature = feature->next)
 415         {
 416                 if (sensors_get_feature (*feature->chip, feature->data->number, &value) < 0)
 417                         continue;
 418
 419                 if (sensor_extended_naming)
 420                 {
 421                         /* full chip name logic borrowed from lm_sensors */
 422                         if (feature->chip->bus == SENSORS_CHIP_NAME_BUS_ISA)
 423                         {
 424                                 if (snprintf (chip_fullprefix, BUFSIZE, "%s-isa-%04x/%s",
 425                                                         feature->chip->prefix,
 426                                                         feature->chip->addr,
 427                                                         sensor_type_prefix[feature->type])
 428                                                 >= BUFSIZE)
 429                                         continue;
 430                         }
 431                         else if (feature->chip->bus == SENSORS_CHIP_NAME_BUS_DUMMY)
 432                         {
 433                                 if (snprintf (chip_fullprefix, BUFSIZE, "%s-%s-%04x/%s",
 434                                                         feature->chip->prefix,
 435                                                         feature->chip->busname,
 436                                                         feature->chip->addr,
 437                                                         sensor_type_prefix[feature->type])
 438                                                 >= BUFSIZE)
 439                                         continue;
 440                         }
 441                         else
 442                         {
 443                                 if (snprintf (chip_fullprefix, BUFSIZE, "%s-i2c-%d-%02x/%s",
 444                                                         feature->chip->prefix,
 445                                                         feature->chip->bus,
 446                                                         feature->chip->addr,
 447                                                         sensor_type_prefix[feature->type])
 448                                                 >= BUFSIZE)
 449                                         continue;
 450                         }
 451
 452                         sensors_submit (feature->data->name,
 453                                         chip_fullprefix,
 454                                         value, feature->type);
 455                 }
 456                 else
 457                 {
 458                         sensors_submit (feature->data->name,
 459                                         feature->chip->prefix,
 460                                         value, feature->type);
 461                 }
 462         }
 463 }
 464 #else
 465 # define sensors_read NULL
 466 #endif /* SENSORS_HAVE_READ */
 467
 468 void module_register (void)
 469 {
 470         plugin_register (MODULE_NAME, collectd_sensors_init, sensors_read, sensors_write);
 471         plugin_register (MODULE_NAME_VOLTAGE, NULL, NULL, sensors_voltage_write);
 472         cf_register (MODULE_NAME, sensors_config, config_keys, config_keys_num);
 473 }
 474
 475 #undef BUFSIZE
 476 #undef MODULE_NAME