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/*
* Copyright (C) 2006 Jean-Yves Lefort <jylefort@FreeBSD.org>
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <time.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */
#include "smartctl-sensors-interface.h"
#include "sensors-applet.h"
/* be gentle */
#define POLL_INTERVAL 30
typedef struct
{
time_t last_poll;
double value;
} SensorInfo;
static GHashTable *sensors;
static gboolean
smartctl_sensors_interface_run (const char *command,
const char *device,
char **output)
{
char *argv[4];
GSpawnFlags flags = G_SPAWN_STDERR_TO_DEV_NULL;
char *_output = NULL;
int exit_status;
g_return_val_if_fail(command != NULL, FALSE);
g_return_val_if_fail(device != NULL, FALSE);
argv[0] = SMARTCTL_HELPER;
argv[1] = (char *) command;
argv[2] = (char *) device;
argv[3] = NULL;
if (! output)
flags |= G_SPAWN_STDOUT_TO_DEV_NULL;
if (g_spawn_sync(NULL, argv, NULL, flags, NULL, NULL, output ? &_output : NULL, NULL, &exit_status, NULL))
{
if (exit_status == 0)
{
if (output)
*output = _output;
return TRUE;
}
g_free(_output);
}
return FALSE;
}
static gboolean
smartctl_sensors_interface_get_temperature (const char *device, double *temp)
{
char *output;
char **lines;
int i;
gboolean status = FALSE;
g_return_val_if_fail(device != NULL, FALSE);
if (! smartctl_sensors_interface_run("attributes", device, &output))
return FALSE;
lines = g_strsplit(output, "\n", 0);
g_free(output);
for (i = 0; lines[i]; i++)
if (g_str_has_prefix(lines[i], "194 Temperature_Celsius"))
{
char *p;
p = strrchr(lines[i], ' ');
if (p)
{
double _temp;
char *end;
_temp = strtod(p + 1, &end);
if (*end == 0)
{
status = TRUE;
if (temp)
*temp = _temp;
}
}
break;
}
g_strfreev(lines);
return status;
}
static void
smartctl_sensors_interface_disk_init (SensorsApplet *sensors_applet,
const char *disk,
int unit)
{
char *device;
g_return_if_fail(sensors_applet != NULL);
g_return_if_fail(disk != NULL);
device = g_strdup_printf("/dev/%s%i", disk, unit);
if (g_file_test(device, G_FILE_TEST_EXISTS)
&& smartctl_sensors_interface_run("enable", device, NULL)
&& smartctl_sensors_interface_get_temperature(device, NULL))
{
char *path;
char *label;
path = g_strdup_printf("/smartctl%s", device);
label = g_strdup_printf("%s%i", disk, unit);
sensors_applet_add_sensor(sensors_applet,
path,
device,
label,
SMARTCTL,
TRUE,
TEMP_SENSOR,
HDD_ICON);
g_free(path);
g_free(label);
}
g_free(device);
}
void
smartctl_sensors_interface_init (SensorsApplet *sensors_applet)
{
int i;
sensors = g_hash_table_new(g_str_hash, g_str_equal);
sensors_applet_register_sensors_interface(sensors_applet,
SMARTCTL,
smartctl_sensors_interface_get_sensor_value);
/* smartctl supports ad(4) and da(4) disks */
for (i = 0; i < 10; i++)
{
smartctl_sensors_interface_disk_init(sensors_applet, "ad", i);
smartctl_sensors_interface_disk_init(sensors_applet, "da", i);
}
}
double
smartctl_sensors_interface_get_sensor_value (const gchar *path,
const gchar *id,
SensorType type,
GError **error)
{
SensorInfo *info;
time_t now;
info = g_hash_table_lookup(sensors, id);
if (! info)
{
info = g_new0(SensorInfo, 1);
g_hash_table_insert(sensors, g_strdup(id), info);
}
now = time(NULL);
if (now == -1 || now - info->last_poll >= POLL_INTERVAL)
{
info->last_poll = now;
smartctl_sensors_interface_get_temperature(id, &info->value);
}
return info->value;
}
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