512 lines
12 KiB
C
512 lines
12 KiB
C
/* $NetBSD: config.c,v 1.5 2007/10/09 08:00:46 xtraeme Exp $ */
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/*-
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* Copyright (c) 2007 Juan Romero Pardines.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: config.c,v 1.5 2007/10/09 08:00:46 xtraeme Exp $");
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#endif /* not lint */
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <err.h>
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#include <errno.h>
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#include <sys/queue.h>
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#include <prop/proplib.h>
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#include "envstat.h"
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/*
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* Singly linked list for dictionaries that store properties
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* in a sensor.
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*/
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static SLIST_HEAD(, sensor_block) sensor_block_list =
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SLIST_HEAD_INITIALIZER(&sensor_block_list);
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/*
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* Singly linked list for devices that store a proplib array
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* device with a device name.
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*/
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static SLIST_HEAD(, device_block) device_block_list =
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SLIST_HEAD_INITIALIZER(&device_block_list);
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enum {
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VALUE_ERR,
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PROP_ERR,
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SENSOR_ERR,
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DEV_ERR
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};
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static prop_dictionary_t cfdict, sensordict;
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static void config_errmsg(int, const char *, const char *);
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static void
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config_errmsg(int lvl, const char *key, const char *key2)
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{
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(void)printf("error: ");
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switch (lvl) {
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case VALUE_ERR:
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(void)printf("invalid value for '%s' in `%s'\n",
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key, key2);
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break;
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case PROP_ERR:
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(void)printf("the '%s' property is not allowed "
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"in `%s'\n", key, key2);
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break;
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case SENSOR_ERR:
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(void)printf("'%s' is not a valid sensor in the "
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"`%s' device\n", key, key2);
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break;
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case DEV_ERR:
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(void)printf("device `%s' doesn't exist\n", key);
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break;
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}
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(void)printf("please fix the configuration file!\n");
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exit(EXIT_FAILURE);
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}
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/*
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* Adds a property into the global dictionary 'cfdict'.
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*/
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void
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config_dict_add_prop(const char *key, char *value)
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{
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if (!key || !value)
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return;
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if (!sensordict) {
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sensordict = prop_dictionary_create();
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if (!sensordict)
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err(EXIT_FAILURE, "cfdict");
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}
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if (!prop_dictionary_set_cstring(sensordict, key, value))
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err(EXIT_FAILURE, "prop_dict_set_cstring");
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}
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/*
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* Adds the last property into the dictionary and puts it into
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* the singly linked list for future use.
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*/
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void
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config_dict_mark(const char *key)
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{
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struct sensor_block *sb;
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if (!key)
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err(EXIT_FAILURE, "!key");
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sb = calloc(1, sizeof(*sb));
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if (!sb)
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err(EXIT_FAILURE, "!sb");
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sb->dict = prop_dictionary_create();
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if (!sb->dict)
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err(EXIT_FAILURE, "!sb->dict");
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sb->dict = prop_dictionary_copy(sensordict);
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SLIST_INSERT_HEAD(&sensor_block_list, sb, sb_head);
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config_dict_destroy(sensordict);
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}
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/*
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* Only used for debugging purposses.
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*/
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void
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config_dict_dump(prop_dictionary_t d)
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{
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char *buf;
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buf = prop_dictionary_externalize(d);
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(void)printf("%s", buf);
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free(buf);
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}
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/*
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* Returns the global dictionary.
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*/
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prop_dictionary_t
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config_dict_parsed(void)
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{
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return cfdict;
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}
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/*
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* Destroys all objects from a dictionary.
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*/
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void
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config_dict_destroy(prop_dictionary_t d)
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{
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prop_object_iterator_t iter;
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prop_object_t obj;
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iter = prop_dictionary_iterator(d);
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if (!iter)
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err(EXIT_FAILURE, "!iter");
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while ((obj = prop_object_iterator_next(iter)) != NULL) {
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prop_dictionary_remove(d,
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prop_dictionary_keysym_cstring_nocopy(obj));
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prop_object_iterator_reset(iter);
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}
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prop_object_iterator_release(iter);
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}
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/*
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* Parses all properties on the device and adds the device
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* into the singly linked list for devices and the global dictionary.
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*/
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void
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config_devblock_add(const char *key, prop_dictionary_t kdict)
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{
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struct device_block *db;
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struct sensor_block *sb;
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prop_array_t array;
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prop_object_iterator_t iter;
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prop_dictionary_t sdict;
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prop_object_t obj;
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prop_string_t lindex;
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const char *sensor;
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bool sensor_found = false;
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if (!key)
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err(EXIT_FAILURE, "devblock !key");
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array = prop_dictionary_get(kdict, key);
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if (!array)
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config_errmsg(DEV_ERR, key, NULL);
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SLIST_FOREACH(sb, &sensor_block_list, sb_head) {
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/* get the index object value from configuration */
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lindex = prop_dictionary_get(sb->dict, "index");
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sensor = prop_string_cstring_nocopy(lindex);
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iter = prop_array_iterator(array);
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if (!iter)
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err(EXIT_FAILURE, "prop_array_iterator devblock");
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/*
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* Get the correct sensor's dictionary from kernel's
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* dictionary.
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*/
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while ((sdict = prop_object_iterator_next(iter)) != NULL) {
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obj = prop_dictionary_get(sdict, "index");
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if (prop_string_equals(lindex, obj)) {
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sensor_found = true;
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break;
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}
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}
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if (!sensor_found) {
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prop_object_iterator_release(iter);
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config_errmsg(SENSOR_ERR, sensor, key);
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}
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config_devblock_check_sensorprops(sdict, sb->dict, sensor);
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prop_object_iterator_release(iter);
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}
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db = calloc(1, sizeof(*db));
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if (!db)
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err(EXIT_FAILURE, "calloc db");
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db->array = prop_array_create();
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if (!db->array)
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err(EXIT_FAILURE, "prop_array_create devblock");
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/*
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* Add all dictionaries into the array.
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*/
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SLIST_FOREACH(sb, &sensor_block_list, sb_head)
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if (!prop_array_add(db->array, sb->dict))
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err(EXIT_FAILURE, "prop_array_add");
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/*
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* Add this device block into our list.
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*/
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db->dev_key = strdup(key);
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SLIST_INSERT_HEAD(&device_block_list, db, db_head);
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/*
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* Remove all items in the list, but just decrement
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* the refcnt in the dictionaries... they are in use.
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*/
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while (!SLIST_EMPTY(&sensor_block_list)) {
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sb = SLIST_FIRST(&sensor_block_list);
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SLIST_REMOVE_HEAD(&sensor_block_list, sb_head);
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prop_object_release(sb->dict);
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free(sb);
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}
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/*
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* Now the properties on the array has been parsed,
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* add it into the global dict.
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*/
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if (!cfdict) {
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cfdict = prop_dictionary_create();
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if (!cfdict)
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err(EXIT_FAILURE, "prop_dictionary_create cfdict");
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}
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if (!prop_dictionary_set(cfdict, key, db->array))
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err(EXIT_FAILURE, "prop_dictionary_set db->array");
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}
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/*
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* Returns the dictionary that has 'sensor_key' in the 'dvname'
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* array.
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*/
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prop_dictionary_t
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config_devblock_getdict(const char *dvname, const char *sensor_key)
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{
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struct device_block *db;
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prop_object_iterator_t iter;
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prop_object_t obj, obj2;
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if (!dvname || !sensor_key)
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return NULL;
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SLIST_FOREACH(db, &device_block_list, db_head)
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if (strcmp(db->dev_key, dvname) == 0)
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break;
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if (!db)
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return NULL;
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iter = prop_array_iterator(db->array);
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if (!iter)
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return NULL;
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while ((obj = prop_object_iterator_next(iter)) != NULL) {
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obj2 = prop_dictionary_get(obj, "index");
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if (prop_string_equals_cstring(obj2, sensor_key))
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break;
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}
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prop_object_iterator_release(iter);
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return obj;
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}
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/*
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* Checks that all properties specified in the configuration file
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* are valid and updates the objects with proper values.
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*/
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void
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config_devblock_check_sensorprops(prop_dictionary_t ksdict,
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prop_dictionary_t csdict,
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const char *sensor)
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{
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prop_object_t obj, obj2, obj3;
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char *strval, *endptr;
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double val;
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/*
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* rfact property set?
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*/
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obj = prop_dictionary_get(csdict, "rfact");
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if (obj) {
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obj2 = prop_dictionary_get(ksdict, "allow-rfact");
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if (prop_bool_true(obj2)) {
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strval = prop_string_cstring(obj);
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val = strtod(strval, &endptr);
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if (*endptr != '\0')
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config_errmsg(VALUE_ERR, "rfact", sensor);
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if (!prop_dictionary_set_uint32(csdict, "rfact", val))
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err(EXIT_FAILURE, "dict_set rfact");
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} else
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config_errmsg(PROP_ERR, "rfact", sensor);
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}
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/*
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* critical-capacity property set?
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*/
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obj = prop_dictionary_get(csdict, "critical-capacity");
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if (obj) {
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obj2 = prop_dictionary_get(ksdict, "want-percentage");
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obj3 = prop_dictionary_get(ksdict, "monitoring-supported");
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if (prop_bool_true(obj2) && prop_bool_true(obj3)) {
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strval = prop_string_cstring(obj);
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val = strtod(strval, &endptr);
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if ((*endptr != '\0') || (val < 0 || val > 100))
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config_errmsg(VALUE_ERR,
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"critical-capacity",
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sensor);
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/*
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* Convert the value to a valid percentage.
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*/
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obj = prop_dictionary_get(ksdict, "max-value");
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val = (val / 100) * prop_number_integer_value(obj);
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if (!prop_dictionary_set_uint32(csdict,
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"critical-capacity",
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val))
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err(EXIT_FAILURE, "dict_set critcap");
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} else
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config_errmsg(PROP_ERR,
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"critical-capacity", sensor);
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}
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/*
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* critical-max property set?
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*/
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obj = prop_dictionary_get(csdict, "critical-max");
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if (obj) {
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obj2 = prop_dictionary_get(ksdict, "monitoring-supported");
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if (!prop_bool_true(obj2))
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config_errmsg(PROP_ERR, "critical-max", sensor);
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strval = prop_string_cstring(obj);
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obj = convert_val_to_pnumber(ksdict, "critical-max",
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sensor, strval);
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if (!prop_dictionary_set(csdict, "critical-max", obj))
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err(EXIT_FAILURE, "prop_dict_set cmax");
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}
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/*
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* critical-min property set?
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*/
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obj = prop_dictionary_get(csdict, "critical-min");
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if (obj) {
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obj2 = prop_dictionary_get(ksdict, "monitoring-supported");
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if (!prop_bool_true(obj2))
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config_errmsg(PROP_ERR, "critical-min", sensor);
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strval = prop_string_cstring(obj);
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obj = convert_val_to_pnumber(ksdict, "critical-min",
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sensor, strval);
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if (!prop_dictionary_set(csdict, "critical-min", obj))
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err(EXIT_FAILURE, "prop_dict_set cmin");
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}
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}
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/*
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* Conversions for critical-max and critical-min properties.
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*/
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prop_number_t
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convert_val_to_pnumber(prop_dictionary_t kdict, const char *prop,
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const char *sensor, char *value)
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{
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prop_object_t obj;
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prop_number_t num;
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double val, max, min;
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char *strval, *tmp, *endptr;
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bool celsius;
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size_t len;
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val = max = min = 0;
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/*
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* critical-max and critical-min are not allowed in
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* battery sensors.
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*/
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obj = prop_dictionary_get(kdict, "want-percentage");
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if (prop_bool_true(obj))
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config_errmsg(PROP_ERR, prop, sensor);
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/*
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* Make the conversion for sensor's type.
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*/
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obj = prop_dictionary_get(kdict, "type");
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if (prop_string_equals_cstring(obj, "Temperature")) {
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tmp = strchr(value, 'C');
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if (tmp)
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celsius = true;
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else {
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tmp = strchr(value, 'F');
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if (!tmp)
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config_errmsg(VALUE_ERR, prop, sensor);
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celsius = false;
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}
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len = strlen(value);
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strval = calloc(len, sizeof(*value));
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if (!strval)
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err(EXIT_FAILURE, "calloc");
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(void)strlcpy(strval, value, len);
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val = strtod(strval, &endptr);
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if (*endptr != '\0')
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config_errmsg(VALUE_ERR, prop, sensor);
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/* convert to fahrenheit */
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if (!celsius)
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val = (val - 32.0) * (5.0 / 9.0);
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/* convert to microKelvin */
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val = val * 1000000 + 273150000;
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num = prop_number_create_unsigned_integer(val);
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} else if (prop_string_equals_cstring(obj, "Fan")) {
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/* no conversion */
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val = strtod(value, &endptr);
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if (*endptr != '\0')
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config_errmsg(VALUE_ERR, prop, sensor);
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num = prop_number_create_unsigned_integer(val);
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} else {
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obj = prop_dictionary_get(kdict, "max-value");
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if (obj)
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max = prop_number_integer_value(obj);
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obj = prop_dictionary_get(kdict, "min-value");
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if (obj)
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min = prop_number_integer_value(obj);
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val = strtod(value, &endptr);
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if (*endptr != '\0')
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config_errmsg(VALUE_ERR, prop, sensor);
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/* convert to m[V,W,Ohms] again */
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val *= 1000000.0;
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/*
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* trying to set a value higher than the max
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* assigned?
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*/
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if (max && val > max)
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config_errmsg(VALUE_ERR, prop, sensor);
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/*
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* trying to set a value lower than the min
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* assigned?
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*/
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if (min && val < min)
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config_errmsg(VALUE_ERR, prop, sensor);
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num = prop_number_create_integer(val);
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}
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return num;
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}
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