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/*
* Copyright (C) 2005-2009 Alex Murray <murray.alex@gmail.com>
* Copyright (C) 2012-2021 MATE Developers
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /* HAVE_CONFIG_H */
#include <stdio.h>
#include <locale.h>
#include <glib.h>
#include <glib/gi18n.h>
#include "i2c-proc-plugin.h"
const gchar *plugin_name = "i2c-proc";
#define I2C_PROC_BASE_DIR "/proc/sys/dev/sensors"
enum {
I2C_PROC_DEVICE_FILE_OPEN_ERROR,
I2C_PROC_DEVICE_FILE_READ_ERROR
};
static void i2c_proc_plugin_add_sensor(GList **sensors, const gchar *path) {
gchar *filename;
gchar *label;
gboolean enable;
SensorType sensor_type;
IconType icon_type = GENERIC_ICON;
filename = g_path_get_basename(path);
/* setup temp2 as CPU sensor and enable it */
if (g_ascii_strcasecmp(filename, "temp2") == 0) {
sensor_type = TEMP_SENSOR;
label = g_strdup(_("CPU"));
enable = TRUE;
icon_type = CPU_ICON;
} else {
label = g_strdup(filename);
switch(filename[0]) {
case 'c': /* currents are "curr?" */
sensor_type = CURRENT_SENSOR;
break;
case 'f': /* fans are "fan?" */
sensor_type = FAN_SENSOR;
icon_type = FAN_ICON;
break;
case 'i': /* voltages are "in?" */
sensor_type = VOLTAGE_SENSOR;
break;
case 't': /* temps are "temp?" */
sensor_type = TEMP_SENSOR;
break;
case 'v': /* vids are just vid */
sensor_type = VOLTAGE_SENSOR;
break;
default:
/* SHOULDN'T BE ABLE TO GET HERE!! */
g_debug("error in i2c-proc sensor detection code - unhandled sensor filename %s", filename);
g_free(filename);
g_free(label);
return;
}
/* disable all other sensors */
enable = FALSE;
}
sensors_applet_plugin_add_sensor(sensors,
path,
filename,
label,
sensor_type,
enable,
icon_type,
DEFAULT_GRAPH_COLOR);
g_free(filename);
g_free(label);
}
static void i2c_proc_plugin_test_sensor(GList **sensors, const gchar *path) {
gchar *filename;
filename = g_path_get_basename(path);
/* see if filename starts with any of the sensor prefixes */
if (g_str_has_prefix(filename, "curr") ||
(g_str_has_prefix(filename, "fan") &&
!g_str_has_prefix(filename, "fan_div")) ||
g_str_has_prefix(filename, "in") ||
g_str_has_prefix(filename, "temp") ||
g_str_has_prefix(filename, "vid")) {
i2c_proc_plugin_add_sensor(sensors, path);
}
g_free(filename);
}
/* to be called to setup for proc sensors */
static GList *i2c_proc_plugin_init(void) {
GList *sensors = NULL;
/* call function to recursively look for sensors
starting at the defined base directory */
sensors_applet_plugin_find_sensors(&sensors, I2C_PROC_BASE_DIR, i2c_proc_plugin_test_sensor);
return sensors;
}
static gdouble i2c_proc_plugin_get_sensor_value(const gchar *path,
const gchar *id,
SensorType type,
GError **error) {
/* to open and access the value of each sensor */
FILE *fp;
gfloat float1, float2, float3;
gint int1, int2;
gfloat sensor_value = -1.0;
gchar *old_locale = NULL;
/* always use C locale */
if (NULL == (old_locale = setlocale(LC_NUMERIC, "C"))) {
g_warning("Could not change locale to C locale for reading i2c-proc device files.. will try regardless");
}
if (NULL == (fp = fopen(path, "r"))) {
g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_PROC_DEVICE_FILE_OPEN_ERROR, "Error opening sensor device file %s", path);
} else {
switch (type) {
case CURRENT_SENSOR:
if (fscanf(fp, "%f %f %f", &float1, &float2, &float3) != 3) {
g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_PROC_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path);
} else {
sensor_value = float3;
}
break;
case FAN_SENSOR:
if (fscanf(fp, "%d %d", &int1, &int2) != 2) {
g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_PROC_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path);
} else {
sensor_value = (gfloat)int2;
}
break;
case VOLTAGE_SENSOR:
/* is it CPU_VID or IN */
switch(id[0]) {
case 'i':
if (fscanf(fp, "%f %f %f", &float1, &float2, &float3) != 3) {
g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_PROC_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path);
} else {
sensor_value = float3;
}
break;
case 'v':
/* want first value in file as float */
if (fscanf(fp, "%f", &float1) != 1) {
g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_PROC_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path);
} else {
sensor_value = float1;
}
break;
default:
g_debug("error in i2c-proc sensor read value function code - unhandled sensor id %s", id);
g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_PROC_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path);
}
break;
case TEMP_SENSOR:
if (fscanf(fp, "%f %f %f", &float1, &float2, &float3) != 3) {
g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, I2C_PROC_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path);
} else {
sensor_value = float3;
}
break;
} /* end switch */
fclose(fp);
}
if (NULL != old_locale) {
setlocale(LC_NUMERIC, old_locale);
}
return (gdouble)sensor_value;
}
const gchar *sensors_applet_plugin_name(void)
{
return plugin_name;
}
GList *sensors_applet_plugin_init(void)
{
return i2c_proc_plugin_init();
}
gdouble sensors_applet_plugin_get_sensor_value(const gchar *path,
const gchar *id,
SensorType type,
GError **error) {
return i2c_proc_plugin_get_sensor_value(path, id, type, error);
}
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