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e08eabe33c
the real name and magnitude now. git-svn-id: http://lm-sensors.org/svn/lm-sensors/branches/lm-sensors-3.0.0@4513 7894878c-1315-0410-8ee3-d5d059ff63e0
97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
/*
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proc.c - Part of libsensors, a Linux library for reading sensor data.
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Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <limits.h>
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#include <dirent.h>
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#include "data.h"
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#include "error.h"
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#include "access.h"
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/* This reads a feature from a sysfs file.
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Sysfs uses a one-value-per file system...
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*/
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int sensors_read_proc(sensors_chip_name name, int feature, double *value)
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{
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const sensors_chip_feature *the_feature;
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int mag;
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char n[NAME_MAX];
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FILE *f;
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int dummy;
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char check;
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const char *suffix = "";
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if (!(the_feature = sensors_lookup_feature_nr(&name, feature)))
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return -SENSORS_ERR_NO_ENTRY;
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/* REVISIT: this is a ugly hack */
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if (sscanf(the_feature->data.name, "in%d%c", &dummy, &check) == 1
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|| sscanf(the_feature->data.name, "fan%d%c", &dummy, &check) == 1
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|| sscanf(the_feature->data.name, "temp%d%c", &dummy, &check) == 1)
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suffix = "_input";
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snprintf(n, NAME_MAX, "%s/%s%s", name.busname, the_feature->data.name,
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suffix);
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if ((f = fopen(n, "r"))) {
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int res = fscanf(f, "%lf", value);
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fclose(f);
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if (res != 1)
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return -SENSORS_ERR_PROC;
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for (mag = the_feature->scaling; mag > 0; mag --)
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*value /= 10.0;
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} else
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return -SENSORS_ERR_PROC;
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return 0;
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}
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int sensors_write_proc(sensors_chip_name name, int feature, double value)
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{
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const sensors_chip_feature *the_feature;
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int mag;
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char n[NAME_MAX];
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FILE *f;
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int dummy;
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char check;
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const char *suffix = "";
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if (!(the_feature = sensors_lookup_feature_nr(&name, feature)))
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return -SENSORS_ERR_NO_ENTRY;
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/* REVISIT: this is a ugly hack */
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if (sscanf(the_feature->data.name, "in%d%c", &dummy, &check) == 1
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|| sscanf(the_feature->data.name, "fan%d%c", &dummy, &check) == 1
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|| sscanf(the_feature->data.name, "temp%d%c", &dummy, &check) == 1)
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suffix = "_input";
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snprintf(n, NAME_MAX, "%s/%s%s", name.busname, the_feature->data.name,
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suffix);
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if ((f = fopen(n, "w"))) {
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for (mag = the_feature->scaling; mag > 0; mag --)
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value *= 10.0;
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fprintf(f, "%d", (int) value);
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fclose(f);
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} else
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return -SENSORS_ERR_PROC;
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return 0;
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}
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