src/lib/lmsensor.c

   1 /*
   2  * Copyright (C) 2010-2013 jeanfi@gmail.com
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   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
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17  * 02110-1301 USA
  18  */
  19 #include <locale.h>
  20 #include <libintl.h>
  21 #define _(str) gettext(str)
  22
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 #include <sensors/sensors.h>
  28 #include <sensors/error.h>
  29
  30 #include "psensor.h"
  31
  32 static int init_done;
  33
  34 static double get_value(const sensors_chip_name *name,
  35                         const sensors_subfeature *sub)
  36 {
  37         double val;
  38         int err;
  39
  40         err = sensors_get_value(name, sub->number, &val);
  41         if (err) {
  42                 log_err(_("lmsensor: cannot get value of subfeature %s: %s."),
  43                         sub->name, sensors_strerror(err));
  44                 val = UNKNOWN_DBL_VALUE;
  45         }
  46         return val;
  47 }
  48
  49 static double get_temp_input(struct psensor *sensor)
  50 {
  51         const sensors_chip_name *chip = sensor->iname;
  52         const sensors_feature *feature = sensor->feature;
  53
  54         const sensors_subfeature *sf;
  55
  56         sf = sensors_get_subfeature(chip,
  57                                     feature, SENSORS_SUBFEATURE_TEMP_INPUT);
  58         if (sf)
  59                 return get_value(chip, sf);
  60         else
  61                 return UNKNOWN_DBL_VALUE;
  62 }
  63
  64 static double get_fan_input(struct psensor *sensor)
  65 {
  66         const sensors_chip_name *chip = sensor->iname;
  67         const sensors_feature *feature = sensor->feature;
  68
  69         const sensors_subfeature *sf;
  70
  71         sf = sensors_get_subfeature(chip,
  72                                     feature, SENSORS_SUBFEATURE_FAN_INPUT);
  73         if (sf)
  74                 return get_value(chip, sf);
  75         else
  76                 return UNKNOWN_DBL_VALUE;
  77 }
  78
  79 void lmsensor_psensor_list_update(struct psensor **sensors)
  80 {
  81         struct psensor **s_ptr = sensors;
  82
  83         if (!init_done)
  84                 return ;
  85
  86         while (*s_ptr) {
  87                 struct psensor *s = *s_ptr;
  88
  89                 if (s->type & SENSOR_TYPE_LMSENSOR) {
  90                         if (s->type & SENSOR_TYPE_TEMP)
  91                                 psensor_set_current_value(s,
  92                                                           get_temp_input(s));
  93                         else if (s->type & SENSOR_TYPE_RPM)
  94                                 psensor_set_current_value(s, get_fan_input(s));
  95                 }
  96
  97                 s_ptr++;
  98         }
  99 }
 100
 101 static struct psensor *
 102 lmsensor_psensor_create(const sensors_chip_name *chip,
 103                         const sensors_feature *feature,
 104                         int values_max_length)
 105 {
 106         char name[200];
 107         const sensors_subfeature *sf;
 108         int type;
 109         char *id, *label, *cname;
 110         struct psensor *psensor;
 111         sensors_subfeature_type fault_subfeature;
 112
 113         if (sensors_snprintf_chip_name(name, 200, chip) < 0)
 114                 return NULL;
 115
 116         if (feature->type == SENSORS_FEATURE_TEMP) {
 117                 fault_subfeature = SENSORS_SUBFEATURE_TEMP_FAULT;
 118         } else if (feature->type == SENSORS_FEATURE_FAN) {
 119                 fault_subfeature = SENSORS_SUBFEATURE_FAN_FAULT;
 120         } else {
 121                 log_err(_(
 122 "lmsensor: lmsensor_psensor_create failure: wrong feature type."));
 123                 return NULL;
 124         }
 125
 126         sf = sensors_get_subfeature(chip, feature, fault_subfeature);
 127         if (sf && get_value(chip, sf))
 128                 return NULL;
 129
 130         label = sensors_get_label(chip, feature);
 131         if (!label)
 132                 return NULL;
 133
 134         type = SENSOR_TYPE_LMSENSOR;
 135         if (feature->type == SENSORS_FEATURE_TEMP)
 136                 type |= SENSOR_TYPE_TEMP;
 137         else if (feature->type == SENSORS_FEATURE_FAN)
 138                 type |= (SENSOR_TYPE_RPM|SENSOR_TYPE_FAN);
 139         else
 140                 return NULL;
 141
 142         id = malloc(strlen("lmsensor ") + 1 + strlen(name) + 1 + strlen(label) +
 143                     1);
 144         sprintf(id, "lmsensor %s %s", name, label);
 145
 146         if (!strcmp(chip->prefix, "coretemp"))
 147                 cname = strdup("Intel CPU");
 148         else if (!strcmp(chip->prefix, "k10temp")
 149                  || !strcmp(chip->prefix, "k8temp")
 150                  || !strcmp(chip->prefix, "fam15h_power"))
 151                 cname = strdup("AMD CPU");
 152         else if (!strcmp(chip->prefix, "nouveau"))
 153                 cname = strdup("Nvidia GPU");
 154         else if (!strcmp(chip->prefix, "via-cputemp"))
 155                 cname = strdup("VIA CPU");
 156         else
 157                 cname = strdup(chip->prefix);
 158
 159         psensor = psensor_create(id, label, cname, type, values_max_length);
 160
 161         psensor->iname = chip;
 162         psensor->feature = feature;
 163
 164         if (feature->type == SENSORS_FEATURE_TEMP
 165             && (get_temp_input(psensor) == UNKNOWN_DBL_VALUE)) {
 166                 free(psensor);
 167                 return NULL;
 168         }
 169
 170         return psensor;
 171 }
 172
 173 struct psensor **lmsensor_psensor_list_add(struct psensor **sensors,
 174                                            int vn)
 175 {
 176         const sensors_chip_name *chip;
 177         int chip_nr = 0;
 178         struct psensor **tmp, **result;
 179         const sensors_feature *feature;
 180         struct psensor *s;
 181         int i;
 182
 183         if (!init_done)
 184                 return NULL;
 185
 186         result = sensors;
 187         while ((chip = sensors_get_detected_chips(NULL, &chip_nr))) {
 188
 189                 i = 0;
 190                 while ((feature = sensors_get_features(chip, &i))) {
 191
 192                         if (feature->type == SENSORS_FEATURE_TEMP
 193                             || feature->type == SENSORS_FEATURE_FAN) {
 194
 195                                 s = lmsensor_psensor_create(chip, feature, vn);
 196
 197                                 if (s) {
 198                                         tmp = psensor_list_add(result, s);
 199
 200                                         if (tmp != sensors)
 201                                                 free(result);
 202
 203                                         result = tmp;
 204                                 }
 205                         }
 206                 }
 207         }
 208
 209         return result;
 210 }
 211
 212 void lmsensor_init()
 213 {
 214         int err = sensors_init(NULL);
 215
 216         if (err) {
 217                 log_err(_("lmsensor: initialization failure: %s."),
 218                         sensors_strerror(err));
 219                 init_done = 0;
 220         } else {
 221                 init_done = 1;
 222         }
 223 }
 224
 225 void lmsensor_cleanup()
 226 {
 227         if (init_done)
 228                 sensors_cleanup();
 229 }