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conky/src/sony.c

81 lines
2.3 KiB
C

/* -*- mode: c; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
*
* Conky, a system monitor, based on torsmo
*
* Please see COPYING for details
*
* Copyright (c) 2005-2009 Brenden Matthews, Philip Kovacs, et. al.
* Copyright (c) 2009 Yeon-Hyeong Yang <lbird94@gmail.com>
* (see AUTHORS)
* All rights reserved.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*
* vim: ts=4 sw=4 noet ai cindent syntax=c
*
*/
/* conky support for information from sony_laptop kernel module
* information from sony_laptop kernel module
* /sys/devices/platform/sony-laptop
* I mimicked the methods from ibm.c
* Yeon-Hyeong Yang <lbird94@gmail.com> */
#include "conky.h"
#include "config.h"
#include "sony.h"
#include "logging.h"
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#define SONY_LAPTOP_DIR "/sys/devices/platform/sony-laptop"
/* fanspeed in SONY_LAPTOP_DIR contains an integer value for fanspeed (0~255).
* I don't know the exact measurement unit, though. I may assume that 0 for
* 'fan stopped' and 255 for 'maximum fan speed'. */
void get_sony_fanspeed(char *p_client_buffer, size_t client_buffer_size)
{
FILE *fp;
unsigned int speed = 0;
char fan[128];
if (!p_client_buffer || client_buffer_size <= 0) {
return;
}
snprintf(fan, 127, "%s/fanspeed", SONY_LAPTOP_DIR);
fp = fopen(fan, "r");
if (fp != NULL) {
while (!feof(fp)) {
char line[256];
if (fgets(line, 255, fp) == NULL) {
break;
}
if (sscanf(line, "%u", &speed)) {
break;
}
}
} else {
CRIT_ERR(NULL, NULL, "can't open '%s': %s\nEnable sony support or remove "
"sony* from your "PACKAGE_NAME" config file.",
fan, strerror(errno));
}
fclose(fp);
snprintf(p_client_buffer, client_buffer_size, "%d", speed);
}