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/*
* Copyright (C) 2005-2009 Alex Murray <murray.alex@gmail.com>
*
* 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 */
#ifdef HAVE_STDIO_H
#include <stdio.h>
#endif /* HAVE_STDIO_H */
#include <glib.h>
#include <glib/gi18n.h>
#include "acpi-plugin.h"
const gchar *plugin_name = "acpi";
#define ACPI_THERMAL_ZONE_BASE_DIR "/proc/acpi/thermal_zone"
#define ACPI_THERMAL_BASE_DIR "/proc/acpi/thermal"
enum {
ACPI_DEVICE_FILE_OPEN_ERROR,
ACPI_DEVICE_FILE_READ_ERROR
};
static void acpi_plugin_add_sensor(GList **sensors, const gchar *path) {
gchar *dirname;
gchar *id;
gchar *label;
dirname = g_path_get_dirname(path);
id = g_path_get_basename(dirname);
g_free(dirname);
sensors_applet_plugin_add_sensor(sensors,
path,
id,
_("CPU"),
TEMP_SENSOR,
TRUE,
CPU_ICON,
DEFAULT_GRAPH_COLOR);
g_free(id);
}
static void acpi_plugin_test_sensor(GList **sensors,
const gchar *path) {
gchar *filename;
filename = g_path_get_basename(path);
if (g_ascii_strcasecmp(filename, "temperature") == 0 ||
g_ascii_strcasecmp(filename, "status") == 0) {
acpi_plugin_add_sensor(sensors, path);
}
g_free(filename);
}
/* to be called to setup for acpi sensors and returns the list of found
* sensors */
static GList *acpi_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, ACPI_THERMAL_ZONE_BASE_DIR, acpi_plugin_test_sensor);
sensors_applet_plugin_find_sensors(&sensors, ACPI_THERMAL_BASE_DIR, acpi_plugin_test_sensor);
return sensors;
}
static gdouble acpi_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 sensor_value = -1.0f;
gchar units[32];
if (NULL == (fp = fopen(path, "r"))) {
g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, ACPI_DEVICE_FILE_OPEN_ERROR, "Error opening sensor device file %s", path);
return sensor_value;
}
if (fscanf(fp, "temperature: %f %31s", &sensor_value, units) < 1) {
g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, ACPI_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path);
fclose(fp);
return sensor_value;
}
fclose(fp);
/* need to convert if units are deciKelvin */
if (g_ascii_strcasecmp(units, "dK") == 0) {
sensor_value = (sensor_value / 10.0) - 273.0;
}
return (gdouble)sensor_value;
}
const gchar *sensors_applet_plugin_name(void)
{
return plugin_name;
}
GList *sensors_applet_plugin_init(void)
{
return acpi_plugin_init();
}
gdouble sensors_applet_plugin_get_sensor_value(const gchar *path,
const gchar *id,
SensorType type,
GError **error) {
return acpi_plugin_get_sensor_value(path, id, type, error);
}
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