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sysmon_envsys.c revision 1.70
      1 /*	$NetBSD: sysmon_envsys.c,v 1.70 2007/11/02 19:21:29 plunky Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2007 Juan Romero Pardines.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 /*-
     29  * Copyright (c) 2000 Zembu Labs, Inc.
     30  * All rights reserved.
     31  *
     32  * Author: Jason R. Thorpe <thorpej (at) zembu.com>
     33  *
     34  * Redistribution and use in source and binary forms, with or without
     35  * modification, are permitted provided that the following conditions
     36  * are met:
     37  * 1. Redistributions of source code must retain the above copyright
     38  *    notice, this list of conditions and the following disclaimer.
     39  * 2. Redistributions in binary form must reproduce the above copyright
     40  *    notice, this list of conditions and the following disclaimer in the
     41  *    documentation and/or other materials provided with the distribution.
     42  * 3. All advertising materials mentioning features or use of this software
     43  *    must display the following acknowledgement:
     44  *	This product includes software developed by Zembu Labs, Inc.
     45  * 4. Neither the name of Zembu Labs nor the names of its employees may
     46  *    be used to endorse or promote products derived from this software
     47  *    without specific prior written permission.
     48  *
     49  * THIS SOFTWARE IS PROVIDED BY ZEMBU LABS, INC. ``AS IS'' AND ANY EXPRESS
     50  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAR-
     51  * RANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DIS-
     52  * CLAIMED.  IN NO EVENT SHALL ZEMBU LABS BE LIABLE FOR ANY DIRECT, INDIRECT,
     53  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     54  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     55  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     56  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     57  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     58  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     59  */
     60 
     61 /*
     62  * Environmental sensor framework for sysmon, exported to userland
     63  * with proplib(3).
     64  */
     65 
     66 #include <sys/cdefs.h>
     67 __KERNEL_RCSID(0, "$NetBSD: sysmon_envsys.c,v 1.70 2007/11/02 19:21:29 plunky Exp $");
     68 
     69 #include <sys/param.h>
     70 #include <sys/types.h>
     71 #include <sys/conf.h>
     72 #include <sys/errno.h>
     73 #include <sys/fcntl.h>
     74 #include <sys/kernel.h>
     75 #include <sys/systm.h>
     76 #include <sys/proc.h>
     77 #include <sys/mutex.h>
     78 #include <sys/kmem.h>
     79 
     80 /* #define ENVSYS_DEBUG */
     81 #include <dev/sysmon/sysmonvar.h>
     82 #include <dev/sysmon/sysmon_envsysvar.h>
     83 #include <dev/sysmon/sysmon_taskq.h>
     84 
     85 /*
     86  * Notes about locking:
     87  *
     88  * There's a global lock 'sme_mtx' to protect access to 'sysmon_envsys_list'
     89  * (devices linked list), 'struct sysmon_envsys' (device), 'sme_events_list'
     90  * (events linked list), 'sme_event_t' (event) and the global counter
     91  * 'sysmon_envsys_next_sensor_index'.
     92  *
     93  * Another lock 'sme_init_mtx' is used to protect initialization and
     94  * finalization of the events framework (the callout(9) and workqueue(9)
     95  * that is used to check for conditions and sending events to powerd(8)).
     96  *
     97  * The global 'sme_cv' condition variable is used to wait for state changes
     98  * on the 'sysmon_envsys_list' and 'sme_events_list' linked lists.
     99  *
    100  */
    101 
    102 kmutex_t sme_mtx, sme_event_init_mtx;
    103 kcondvar_t sme_cv;
    104 
    105 /*
    106  * Types of properties that can be set via userland.
    107  */
    108 enum {
    109 	USERPROP_DESC 		= 0x0001,
    110 	USERPROP_BATTCAP	= 0x0002,
    111 	USERPROP_CRITMAX	= 0x0004,
    112 	USERPROP_CRITMIN	= 0x0008,
    113 	USERPROP_RFACT		= 0x0010
    114 };
    115 
    116 static prop_dictionary_t sme_propd;
    117 static uint32_t sysmon_envsys_next_sensor_index = 0;
    118 static struct sysmon_envsys *sysmon_envsys_find_40(u_int);
    119 
    120 static void sysmon_envsys_release(struct sysmon_envsys *);
    121 static void sysmon_envsys_destroy_plist(prop_array_t);
    122 static int sme_register_sensorname(struct sysmon_envsys *, envsys_data_t *);
    123 static void sme_remove_userprops(void);
    124 
    125 /*
    126  * sysmon_envsys_init:
    127  *
    128  * 	+ Initialize global mutexes, dictionary and the linked lists.
    129  */
    130 void
    131 sysmon_envsys_init(void)
    132 {
    133 	LIST_INIT(&sysmon_envsys_list);
    134 	LIST_INIT(&sme_events_list);
    135 	mutex_init(&sme_mtx, MUTEX_DRIVER, IPL_NONE);
    136 	mutex_init(&sme_event_init_mtx, MUTEX_DRIVER, IPL_NONE);
    137 	cv_init(&sme_cv, "smework");
    138 	sme_propd = prop_dictionary_create();
    139 }
    140 
    141 /*
    142  * sysmonopen_envsys:
    143  *
    144  *	+ Open the system monitor device.
    145  */
    146 int
    147 sysmonopen_envsys(dev_t dev, int flag, int mode, struct lwp *l)
    148 {
    149 	return 0;
    150 }
    151 
    152 /*
    153  * sysmonclose_envsys:
    154  *
    155  *	+ Close the system monitor device.
    156  */
    157 int
    158 sysmonclose_envsys(dev_t dev, int flag, int mode, struct lwp *l)
    159 {
    160 	/* Nothing to do */
    161 	return 0;
    162 }
    163 
    164 /*
    165  * sysmonioctl_envsys:
    166  *
    167  *	+ Perform a sysmon envsys control request.
    168  */
    169 int
    170 sysmonioctl_envsys(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
    171 {
    172 	struct sysmon_envsys *sme = NULL;
    173 	int error = 0;
    174 	u_int oidx;
    175 
    176 	switch (cmd) {
    177 	case ENVSYS_GETDICTIONARY:
    178 	    {
    179 		struct plistref *plist = (struct plistref *)data;
    180 
    181 		/*
    182 		 * Update all sysmon envsys devices dictionaries with
    183 		 * new data if it's different than we have currently
    184 		 * in the dictionary.
    185 		 */
    186 		mutex_enter(&sme_mtx);
    187 		LIST_FOREACH(sme, &sysmon_envsys_list, sme_list) {
    188 			sme->sme_flags |= SME_FLAG_BUSY;
    189 			error = sme_update_dictionary(sme);
    190 			if (error) {
    191 				DPRINTF(("%s: sme_update_dictionary, "
    192 				    "error=%d\n", __func__, error));
    193 				sme->sme_flags &= ~SME_FLAG_BUSY;
    194 				mutex_exit(&sme_mtx);
    195 				return error;
    196 			}
    197 			sme->sme_flags &= ~SME_FLAG_BUSY;
    198 		}
    199 		mutex_exit(&sme_mtx);
    200 		/*
    201 		 * Copy global dictionary to userland.
    202 		 */
    203 		error = prop_dictionary_copyout_ioctl(plist, cmd, sme_propd);
    204 		break;
    205 	    }
    206 	case ENVSYS_SETDICTIONARY:
    207 	    {
    208 		const struct plistref *plist = (const struct plistref *)data;
    209 		prop_dictionary_t udict;
    210 		prop_object_iterator_t iter, iter2;
    211 		prop_object_t obj, obj2;
    212 		prop_array_t array_u, array_k;
    213 		const char *devname = NULL;
    214 
    215 		if ((flag & FWRITE) == 0)
    216 			return EPERM;
    217 
    218 		/*
    219 		 * Get dictionary from userland.
    220 		 */
    221 		error = prop_dictionary_copyin_ioctl(plist, cmd, &udict);
    222 		if (error) {
    223 			DPRINTF(("%s: copyin_ioctl error=%d\n",
    224 			    __func__, error));
    225 			break;
    226 		}
    227 
    228 		iter = prop_dictionary_iterator(udict);
    229 		if (!iter) {
    230 			prop_object_release(udict);
    231 			return ENOMEM;
    232 		}
    233 
    234 		/*
    235 		 * Iterate over the userland dictionary and process
    236 		 * the list of devices.
    237 		 */
    238 		while ((obj = prop_object_iterator_next(iter))) {
    239 			array_u = prop_dictionary_get_keysym(udict, obj);
    240 			if (prop_object_type(array_u) != PROP_TYPE_ARRAY) {
    241 				prop_object_iterator_release(iter);
    242 				prop_object_release(udict);
    243 				return EINVAL;
    244 			}
    245 
    246 			devname = prop_dictionary_keysym_cstring_nocopy(obj);
    247 			DPRINTF(("%s: processing the '%s' array requests\n",
    248 			    __func__, devname));
    249 
    250 			/*
    251 			 * find the correct sme device.
    252 			 */
    253 			sme = sysmon_envsys_find(devname);
    254 			if (!sme) {
    255 				DPRINTF(("%s: NULL sme\n", __func__));
    256 				prop_object_iterator_release(iter);
    257 				prop_object_release(udict);
    258 				return EINVAL;
    259 			}
    260 
    261 			/*
    262 			 * Find the correct array object with the string
    263 			 * supplied by the userland dictionary.
    264 			 */
    265 			array_k = prop_dictionary_get(sme_propd, devname);
    266 			if (prop_object_type(array_k) != PROP_TYPE_ARRAY) {
    267 				DPRINTF(("%s: array device failed\n",
    268 				    __func__));
    269 				sysmon_envsys_release(sme);
    270 				prop_object_iterator_release(iter);
    271 				prop_object_release(udict);
    272 				return EINVAL;
    273 			}
    274 
    275 			iter2 = prop_array_iterator(array_u);
    276 			if (!iter2) {
    277 				sysmon_envsys_release(sme);
    278 				prop_object_iterator_release(iter);
    279 				prop_object_release(udict);
    280 				return ENOMEM;
    281 			}
    282 
    283 			/*
    284 			 * Iterate over the array of dictionaries to
    285 			 * process the list of sensors.
    286 			 */
    287 			while ((obj2 = prop_object_iterator_next(iter2))) {
    288 				/* do the real work now */
    289 				error = sme_userset_dictionary(sme,
    290 							       obj2,
    291 							       array_k);
    292 				if (error) {
    293 					sysmon_envsys_release(sme);
    294 					prop_object_iterator_release(iter2);
    295 					prop_object_iterator_release(iter);
    296 					prop_object_release(udict);
    297 					return EINVAL;
    298 				}
    299 			}
    300 
    301 			sysmon_envsys_release(sme);
    302 			prop_object_iterator_release(iter2);
    303 		}
    304 
    305 		prop_object_iterator_release(iter);
    306 		prop_object_release(udict);
    307 		break;
    308 	    }
    309 	case ENVSYS_REMOVEPROPS:
    310 	    {
    311 		const struct plistref *plist = (const struct plistref *)data;
    312 		prop_dictionary_t udict;
    313 		prop_object_t obj;
    314 
    315 		if ((flag & FWRITE) == 0)
    316 			return EPERM;
    317 
    318 		error = prop_dictionary_copyin_ioctl(plist, cmd, &udict);
    319 		if (error) {
    320 			DPRINTF(("%s: copyin_ioctl error=%d\n",
    321 			    __func__, error));
    322 			break;
    323 		}
    324 
    325 		obj = prop_dictionary_get(udict, "envsys-remove-props");
    326 		if (!obj || !prop_bool_true(obj)) {
    327 			DPRINTF(("%s: invalid 'envsys-remove-props'\n",
    328 			     __func__));
    329 			return EINVAL;
    330 		}
    331 
    332 		sme_remove_userprops();
    333 
    334 		prop_object_release(udict);
    335 		break;
    336 	    }
    337 
    338 	    /*
    339 	     * Compatibility functions with the old interface, only
    340 	     * implemented ENVSYS_GTREDATA and ENVSYS_GTREINFO; enough
    341 	     * to make old applications work.
    342 	     */
    343 	case ENVSYS_GTREDATA:
    344 	    {
    345 		struct envsys_tre_data *tred = (void *)data;
    346 		envsys_data_t *edata = NULL;
    347 
    348 		tred->validflags = 0;
    349 
    350 		sme = sysmon_envsys_find_40(tred->sensor);
    351 		if (!sme)
    352 			break;
    353 
    354 		mutex_enter(&sme_mtx);
    355 		oidx = tred->sensor;
    356 		tred->sensor = SME_SENSOR_IDX(sme, tred->sensor);
    357 
    358 		DPRINTFOBJ(("%s: sensor=%d oidx=%d dev=%s nsensors=%d\n",
    359 		    __func__, tred->sensor, oidx, sme->sme_name,
    360 		    sme->sme_nsensors));
    361 
    362 		edata = &sme->sme_sensor_data[tred->sensor];
    363 
    364 		if (tred->sensor < sme->sme_nsensors) {
    365 			if ((sme->sme_flags & SME_DISABLE_GTREDATA) == 0) {
    366 				error = (*sme->sme_gtredata)(sme, edata);
    367 				if (error) {
    368 					DPRINTF(("%s: sme_gtredata failed\n",
    369 				    	    __func__));
    370 					mutex_exit(&sme_mtx);
    371 					return error;
    372 				}
    373 			}
    374 
    375 			/* copy required values to the old interface */
    376 			tred->sensor = edata->sensor;
    377 			tred->cur.data_us = edata->value_cur;
    378 			tred->cur.data_s = edata->value_cur;
    379 			tred->max.data_us = edata->value_max;
    380 			tred->max.data_s = edata->value_max;
    381 			tred->min.data_us = edata->value_min;
    382 			tred->min.data_s = edata->value_min;
    383 			tred->avg.data_us = edata->value_avg;
    384 			tred->avg.data_s = edata->value_avg;
    385 			tred->units = edata->units;
    386 
    387 			tred->validflags |= ENVSYS_FVALID;
    388 			tred->validflags |= ENVSYS_FCURVALID;
    389 
    390 			if (edata->flags & ENVSYS_FPERCENT) {
    391 				tred->validflags |= ENVSYS_FMAXVALID;
    392 				tred->validflags |= ENVSYS_FFRACVALID;
    393 			}
    394 
    395 			if (edata->state == ENVSYS_SINVALID ||
    396 			    edata->flags & ENVSYS_FNOTVALID) {
    397 				tred->validflags &= ~ENVSYS_FCURVALID;
    398 				tred->cur.data_us = tred->cur.data_s = 0;
    399 			}
    400 
    401 			DPRINTFOBJ(("%s: sensor=%s tred->cur.data_s=%d\n",
    402 			    __func__, edata->desc, tred->cur.data_s));
    403 			DPRINTFOBJ(("%s: tred->validflags=%d tred->units=%d"
    404 			    " tred->sensor=%d\n", __func__, tred->validflags,
    405 			    tred->units, tred->sensor));
    406 		}
    407 		tred->sensor = oidx;
    408 		mutex_exit(&sme_mtx);
    409 
    410 		break;
    411 	    }
    412 	case ENVSYS_GTREINFO:
    413 	    {
    414 		struct envsys_basic_info *binfo = (void *)data;
    415 		envsys_data_t *edata = NULL;
    416 
    417 		binfo->validflags = 0;
    418 
    419 		sme = sysmon_envsys_find_40(binfo->sensor);
    420 		if (!sme)
    421 			break;
    422 
    423 		mutex_enter(&sme_mtx);
    424 		oidx = binfo->sensor;
    425 		binfo->sensor = SME_SENSOR_IDX(sme, binfo->sensor);
    426 
    427 		edata = &sme->sme_sensor_data[binfo->sensor];
    428 
    429 		binfo->validflags |= ENVSYS_FVALID;
    430 
    431 		if (binfo->sensor < sme->sme_nsensors) {
    432 			binfo->units = edata->units;
    433 
    434 			/*
    435 			 * previously, the ACPI sensor names included the
    436 			 * device name. Include that in compatibility code.
    437 			 */
    438 			if (strncmp(sme->sme_name, "acpi", 4) == 0)
    439 				(void)snprintf(binfo->desc, sizeof(binfo->desc),
    440 				    "%s %s", sme->sme_name, edata->desc);
    441 			else
    442 				(void)strlcpy(binfo->desc, edata->desc,
    443 				    sizeof(binfo->desc));
    444 		}
    445 
    446 		DPRINTFOBJ(("%s: binfo->units=%d binfo->validflags=%d\n",
    447 		    __func__, binfo->units, binfo->validflags));
    448 		DPRINTFOBJ(("%s: binfo->desc=%s binfo->sensor=%d\n",
    449 		    __func__, binfo->desc, binfo->sensor));
    450 
    451 		binfo->sensor = oidx;
    452 		mutex_exit(&sme_mtx);
    453 
    454 		break;
    455 	    }
    456 	default:
    457 		error = ENOTTY;
    458 		break;
    459 	}
    460 
    461 	return error;
    462 }
    463 
    464 /*
    465  * sysmon_envsys_register:
    466  *
    467  *	+ Register a sysmon envsys device.
    468  *	+ Create array of dictionaries for a device.
    469  */
    470 int
    471 sysmon_envsys_register(struct sysmon_envsys *sme)
    472 {
    473 	struct sme_evdrv {
    474 		SLIST_ENTRY(sme_evdrv) evdrv_head;
    475 		sme_event_drv_t *evdrv;
    476 	};
    477 	SLIST_HEAD(, sme_evdrv) sme_evdrv_list;
    478 	struct sme_evdrv *sme_evdrv = NULL;
    479 	struct sysmon_envsys *lsme;
    480 	prop_dictionary_t dict;
    481 	prop_array_t array;
    482 	envsys_data_t *edata = NULL;
    483 	int i, error = 0;
    484 
    485 	KASSERT(sme != NULL);
    486 	KASSERT(sme->sme_name != NULL);
    487 	KASSERT(sme->sme_sensor_data != NULL);
    488 
    489 	/*
    490 	 * sme_nsensors is mandatory...
    491 	 */
    492 	if (!sme->sme_nsensors)
    493 		return EINVAL;
    494 
    495 	/*
    496 	 * sanity check: if SME_DISABLE_GTREDATA is not set,
    497 	 * the sme_gtredata function callback must be non NULL.
    498 	 */
    499 	if ((sme->sme_flags & SME_DISABLE_GTREDATA) == 0) {
    500 		if (!sme->sme_gtredata)
    501 			return EINVAL;
    502 	}
    503 
    504 
    505 	/* create the sysmon envsys device array. */
    506 	array = prop_array_create();
    507 	if (!array)
    508 		return ENOMEM;
    509 
    510 	/*
    511 	 * Initialize the singly linked list for sensor descriptions.
    512 	 */
    513 	SLIST_INIT(&sme->sme_names_list);
    514 
    515 	/*
    516 	 * Initialize the singly linked list for driver events.
    517 	 */
    518 	SLIST_INIT(&sme_evdrv_list);
    519 	/*
    520 	 * Iterate over all sensors and create a dictionary per sensor,
    521 	 * checking firstly if sensor description is unique.
    522 	 */
    523 	for (i = 0; i < sme->sme_nsensors; i++) {
    524 		edata = &sme->sme_sensor_data[i];
    525 		/*
    526 		 * Check if sensor description is unique.
    527 		 */
    528 		if (sme_register_sensorname(sme, edata))
    529 			continue;
    530 
    531 		dict = prop_dictionary_create();
    532 		if (!dict) {
    533 			error = ENOMEM;
    534 			goto out2;
    535 		}
    536 
    537 		/*
    538 		 * Create all objects in sensor's dictionary.
    539 		 */
    540 		sme_evdrv = kmem_zalloc(sizeof(*sme_evdrv), KM_SLEEP);
    541 		sme_evdrv->evdrv = sme_add_sensor_dictionary(sme,
    542 					array, dict, edata);
    543 		if (sme_evdrv->evdrv)
    544 			SLIST_INSERT_HEAD(&sme_evdrv_list,
    545 					  sme_evdrv, evdrv_head);
    546 	}
    547 
    548 	/*
    549 	 * Check if requested sysmon_envsys device is valid
    550 	 * and does not exist already in the list.
    551 	 */
    552 	mutex_enter(&sme_mtx);
    553 	sme->sme_flags |= SME_FLAG_BUSY;
    554 	LIST_FOREACH(lsme, &sysmon_envsys_list, sme_list) {
    555 	       if (strcmp(lsme->sme_name, sme->sme_name) == 0) {
    556 		       error = EEXIST;
    557 		       goto out;
    558 	       }
    559 	}
    560 
    561 	/*
    562 	 * If the array does not contain any object (sensor), there's
    563 	 * no need to attach the driver.
    564 	 */
    565 	if (prop_array_count(array) == 0) {
    566 		error = EINVAL;
    567 		DPRINTF(("%s: empty array for '%s'\n", __func__,
    568 		    sme->sme_name));
    569 		goto out;
    570 	}
    571 	/*
    572 	 * Add the array into the global dictionary for the driver.
    573 	 *
    574 	 * <dict>
    575 	 * 	<key>foo0</key>
    576 	 * 	<array>
    577 	 * 		...
    578 	 */
    579 	if (!prop_dictionary_set(sme_propd, sme->sme_name, array)) {
    580 		error = EINVAL;
    581 		DPRINTF(("%s: prop_dictionary_set for '%s'\n", __func__,
    582 		    sme->sme_name));
    583 		goto out;
    584 	}
    585 	/*
    586 	 * Add the device into the list.
    587 	 */
    588 	LIST_INSERT_HEAD(&sysmon_envsys_list, sme, sme_list);
    589 	sme->sme_fsensor = sysmon_envsys_next_sensor_index;
    590 	sysmon_envsys_next_sensor_index += sme->sme_nsensors;
    591 out:
    592 	sme->sme_uniqsensors = 0;
    593 	sme->sme_flags &= ~SME_FLAG_BUSY;
    594 	mutex_exit(&sme_mtx);
    595 
    596 	if (error == 0) {
    597 		i = 0;
    598 		SLIST_FOREACH(sme_evdrv, &sme_evdrv_list, evdrv_head) {
    599 			if (i == 0)
    600 				sysmon_task_queue_init();
    601 			sysmon_task_queue_sched(0,
    602 			    sme_event_drvadd, sme_evdrv->evdrv);
    603 		}
    604 		DPRINTF(("%s: driver '%s' registered (nsens=%d)\n",
    605 		    __func__, sme->sme_name, sme->sme_nsensors));
    606 	}
    607 
    608 out2:
    609 	while (!SLIST_EMPTY(&sme_evdrv_list)) {
    610 		sme_evdrv = SLIST_FIRST(&sme_evdrv_list);
    611 		SLIST_REMOVE_HEAD(&sme_evdrv_list, evdrv_head);
    612 		kmem_free(sme_evdrv, sizeof(*sme_evdrv));
    613 	}
    614 	if (!error)
    615 		return 0;
    616 
    617 	DPRINTF(("%s: failed to register '%s' (%d)\n", __func__,
    618 	    sme->sme_name, error));
    619 	if (error != EEXIST) {
    620 		mutex_enter(&sme_mtx);
    621 		sme_event_unregister_all(sme->sme_name);
    622 		mutex_exit(&sme_mtx);
    623 	}
    624 	sysmon_envsys_destroy_plist(array);
    625 	return error;
    626 }
    627 
    628 /*
    629  * sysmon_envsys_destroy_plist:
    630  *
    631  * 	+ Remove all objects from the array of dictionaries that is
    632  * 	  created in a sysmon envsys device.
    633  */
    634 static void
    635 sysmon_envsys_destroy_plist(prop_array_t array)
    636 {
    637 	prop_object_iterator_t iter, iter2;
    638 	prop_dictionary_t dict;
    639 	prop_object_t obj;
    640 
    641 	KASSERT(array != NULL);
    642 
    643 	DPRINTFOBJ(("%s: objects in array=%d\n", __func__,
    644 	    prop_array_count(array)));
    645 
    646 	iter = prop_array_iterator(array);
    647 	if (!iter)
    648 		return;
    649 
    650 	while ((dict = prop_object_iterator_next(iter))) {
    651 		KASSERT(prop_object_type(dict) == PROP_TYPE_DICTIONARY);
    652 		iter2 = prop_dictionary_iterator(dict);
    653 		if (!iter2)
    654 			goto out;
    655 		DPRINTFOBJ(("%s: iterating over dictionary\n", __func__));
    656 		while ((obj = prop_object_iterator_next(iter2)) != NULL) {
    657 			DPRINTFOBJ(("%s: obj=%s\n", __func__,
    658 			    prop_dictionary_keysym_cstring_nocopy(obj)));
    659 			prop_dictionary_remove(dict,
    660 			    prop_dictionary_keysym_cstring_nocopy(obj));
    661 			prop_object_iterator_reset(iter2);
    662 		}
    663 		prop_object_iterator_release(iter2);
    664 		DPRINTFOBJ(("%s: objects in dictionary:%d\n",
    665 		    __func__, prop_dictionary_count(dict)));
    666 		prop_object_release(dict);
    667 	}
    668 
    669 out:
    670 	prop_object_iterator_release(iter);
    671 	prop_object_release(array);
    672 }
    673 
    674 /*
    675  * sysmon_envsys_unregister:
    676  *
    677  *	+ Unregister a sysmon envsys device.
    678  */
    679 void
    680 sysmon_envsys_unregister(struct sysmon_envsys *sme)
    681 {
    682 	struct sme_sensor_names *snames;
    683 	prop_array_t array;
    684 
    685 	KASSERT(sme != NULL);
    686 
    687 	mutex_enter(&sme_mtx);
    688 	while (sme->sme_flags & SME_FLAG_BUSY) {
    689 		sme->sme_flags |= SME_FLAG_WANTED;
    690 		cv_wait(&sme_cv, &sme_mtx);
    691 	}
    692 	sysmon_envsys_next_sensor_index -= sme->sme_nsensors;
    693 	/*
    694 	 * Remove all sensor descriptions from the singly linked list.
    695 	 */
    696 	while (!SLIST_EMPTY(&sme->sme_names_list)) {
    697 		snames = SLIST_FIRST(&sme->sme_names_list);
    698 		SLIST_REMOVE_HEAD(&sme->sme_names_list, sme_names);
    699 		kmem_free(snames, sizeof(*snames));
    700 	}
    701 	/*
    702 	 * Unregister all events associated with this device.
    703 	 */
    704 	sme_event_unregister_all(sme->sme_name);
    705 	LIST_REMOVE(sme, sme_list);
    706 	mutex_exit(&sme_mtx);
    707 	/*
    708 	 * Remove the device (and all its objects) from the global dictionary.
    709 	 */
    710 	array = prop_dictionary_get(sme_propd, sme->sme_name);
    711 	if (array && prop_object_type(array) == PROP_TYPE_ARRAY) {
    712 		prop_dictionary_remove(sme_propd, sme->sme_name);
    713 		sysmon_envsys_destroy_plist(array);
    714 	}
    715 }
    716 
    717 /*
    718  * sysmon_envsys_find:
    719  *
    720  *	+ Find a sysmon envsys device.
    721  */
    722 struct sysmon_envsys *
    723 sysmon_envsys_find(const char *name)
    724 {
    725 	struct sysmon_envsys *sme;
    726 
    727 	mutex_enter(&sme_mtx);
    728 again:
    729 	for (sme = LIST_FIRST(&sysmon_envsys_list); sme;
    730 	     sme = LIST_NEXT(sme, sme_list)) {
    731 			if (strcmp(sme->sme_name, name) == 0) {
    732 				if (sme->sme_flags & SME_FLAG_BUSY) {
    733 					sme->sme_flags |= SME_FLAG_WANTED;
    734 					cv_wait(&sme_cv, &sme_mtx);
    735 					goto again;
    736 				}
    737 				sme->sme_flags |= SME_FLAG_BUSY;
    738 				break;
    739 			}
    740 	}
    741 	mutex_exit(&sme_mtx);
    742 	return sme;
    743 }
    744 
    745 /*
    746  * sysmon_envsys_release:
    747  *
    748  * 	+ Release a sysmon envsys device.
    749  */
    750 void
    751 sysmon_envsys_release(struct sysmon_envsys *sme)
    752 {
    753 	mutex_enter(&sme_mtx);
    754 	if (sme->sme_flags & SME_FLAG_WANTED)
    755 		cv_broadcast(&sme_cv);
    756 	sme->sme_flags &= ~(SME_FLAG_BUSY | SME_FLAG_WANTED);
    757 	mutex_exit(&sme_mtx);
    758 }
    759 
    760 /* compatibility function */
    761 struct sysmon_envsys *
    762 sysmon_envsys_find_40(u_int idx)
    763 {
    764 	struct sysmon_envsys *sme;
    765 
    766 	mutex_enter(&sme_mtx);
    767 	for (sme = LIST_FIRST(&sysmon_envsys_list); sme;
    768 	     sme = LIST_NEXT(sme, sme_list)) {
    769 		if (idx >= sme->sme_fsensor &&
    770 	    	    idx < (sme->sme_fsensor + sme->sme_nsensors))
    771 			break;
    772 	}
    773 	mutex_exit(&sme_mtx);
    774 	return sme;
    775 }
    776 
    777 /*
    778  * sme_sensor_dictionary_get:
    779  *
    780  * 	+ Returns a dictionary of a device specified by 'index'.
    781  */
    782 prop_dictionary_t
    783 sme_sensor_dictionary_get(prop_array_t array, const char *index)
    784 {
    785 	prop_object_iterator_t iter;
    786 	prop_dictionary_t dict;
    787 	prop_object_t obj;
    788 
    789 	KASSERT(array != NULL || index != NULL);
    790 
    791 	iter = prop_array_iterator(array);
    792 	if (!iter)
    793 		return NULL;
    794 
    795 	while ((dict = prop_object_iterator_next(iter))) {
    796 		obj = prop_dictionary_get(dict, "index");
    797 		if (prop_string_equals_cstring(obj, index))
    798 			break;
    799 	}
    800 
    801 	prop_object_iterator_release(iter);
    802 	return dict;
    803 }
    804 
    805 /*
    806  * sme_remove_userprops:
    807  *
    808  * 	+ Remove all properties from all devices that were set by
    809  * 	  the userland.
    810  */
    811 static void
    812 sme_remove_userprops(void)
    813 {
    814 	struct sysmon_envsys *sme;
    815 	prop_array_t array;
    816 	prop_dictionary_t sdict;
    817 	envsys_data_t *edata = NULL;
    818 	char tmp[ENVSYS_DESCLEN];
    819 	int i, ptype;
    820 
    821 	mutex_enter(&sme_mtx);
    822 	LIST_FOREACH(sme, &sysmon_envsys_list, sme_list) {
    823 		sme->sme_flags |= SME_FLAG_BUSY;
    824 		array = prop_dictionary_get(sme_propd, sme->sme_name);
    825 
    826 		for (i = 0; i < sme->sme_nsensors; i++) {
    827 			edata = &sme->sme_sensor_data[i];
    828 			(void)snprintf(tmp, sizeof(tmp), "sensor%d",
    829 				       edata->sensor);
    830 			sdict = sme_sensor_dictionary_get(array, tmp);
    831 
    832 			if (edata->upropset & USERPROP_BATTCAP) {
    833 				prop_dictionary_remove(sdict,
    834 				    "critical-capacity");
    835 				ptype = PENVSYS_EVENT_BATT_USERCAP;
    836 				sme_event_unregister(edata->desc, ptype);
    837 			}
    838 
    839 			if (edata->upropset & USERPROP_CRITMAX) {
    840 				prop_dictionary_remove(sdict,
    841 				    "critical-max");
    842 				ptype = PENVSYS_EVENT_USER_CRITMAX;
    843 				sme_event_unregister(edata->desc, ptype);
    844 			}
    845 
    846 			if (edata->upropset & USERPROP_CRITMIN) {
    847 				prop_dictionary_remove(sdict,
    848 				    "critical-min");
    849 				ptype = PENVSYS_EVENT_USER_CRITMIN;
    850 				sme_event_unregister(edata->desc, ptype);
    851 			}
    852 
    853 			if (edata->upropset & USERPROP_RFACT) {
    854 				(void)sme_sensor_upint32(sdict, "rfact", 0);
    855 				edata->rfact = 0;
    856 			}
    857 
    858 			if (edata->upropset & USERPROP_DESC)
    859 				(void)sme_sensor_upstring(sdict,
    860 			  	    "description", edata->desc);
    861 		}
    862 
    863 		if (edata->upropset)
    864 			edata->upropset = 0;
    865 
    866 		sme->sme_flags &= ~SME_FLAG_BUSY;
    867 	}
    868 	mutex_exit(&sme_mtx);
    869 }
    870 /*
    871  * sme_register_sensorname:
    872  *
    873  * 	+ Register a sensor description into the list maintained per device.
    874  */
    875 static int
    876 sme_register_sensorname(struct sysmon_envsys *sme, envsys_data_t *edata)
    877 {
    878 	struct sme_sensor_names *snames, *snames2 = NULL;
    879 
    880 	KASSERT(edata != NULL);
    881 
    882 	SLIST_FOREACH(snames2, &sme->sme_names_list, sme_names) {
    883 		/*
    884 		 * Match sensors with empty and duplicate description.
    885 		 */
    886 		if (strlen(edata->desc) == 0 ||
    887 		    strcmp(snames2->desc, edata->desc) == 0)
    888 			if (snames2->assigned) {
    889 				edata->flags |= ENVSYS_FNOTVALID;
    890 				DPRINTF(("%s: wrong sensor name='%s'\n",
    891 				    sme->sme_name, edata->desc));
    892 				return EEXIST;
    893 			}
    894 	}
    895 
    896 	snames = kmem_zalloc(sizeof(*snames), KM_NOSLEEP);
    897 	if (!snames)
    898 		return ENOMEM;
    899 
    900 	snames->assigned = true;
    901 	(void)strlcpy(snames->desc, edata->desc, sizeof(snames->desc));
    902 	DPRINTF(("%s: registering sensor name='%s'\n",
    903 	    sme->sme_name, edata->desc));
    904 	SLIST_INSERT_HEAD(&sme->sme_names_list, snames, sme_names);
    905 	sme->sme_uniqsensors++;
    906 
    907 	return 0;
    908 }
    909 
    910 /*
    911  * sme_add_sensor_dictionary:
    912  *
    913  * 	+ Add the objects into the dictionary.
    914  */
    915 sme_event_drv_t *
    916 sme_add_sensor_dictionary(struct sysmon_envsys *sme, prop_array_t array,
    917 		    	  prop_dictionary_t dict, envsys_data_t *edata)
    918 {
    919 	const struct sme_description_table *sdt, *sdt_units;
    920 	sme_event_drv_t *sme_evdrv_t = NULL;
    921 	int i, j;
    922 	char indexstr[ENVSYS_DESCLEN];
    923 
    924 	i = j = 0;
    925 
    926 	/* find the correct unit for this sensor. */
    927 	sdt_units = sme_get_description_table(SME_DESC_UNITS);
    928 	for (i = 0; sdt_units[i].type != -1; i++)
    929 		if (sdt_units[i].type == edata->units)
    930 			break;
    931 
    932 	if (strcmp(sdt_units[i].desc, "unknown") == 0) {
    933 		DPRINTF(("%s: invalid units type for sensor=%d\n",
    934 		    __func__, edata->sensor));
    935 		goto invalidate_sensor;
    936 	}
    937 
    938 	/*
    939 	 * Add the index sensor string.
    940 	 *
    941 	 * 		...
    942 	 * 		<key>index</key>
    943 	 * 		<string>sensor0</string>
    944 	 * 		...
    945 	 */
    946 	(void)snprintf(indexstr, sizeof(indexstr), "sensor%d", edata->sensor);
    947 	if (sme_sensor_upstring(dict, "index", indexstr))
    948 		goto invalidate_sensor;
    949 
    950 	/*
    951 	 * 		...
    952 	 * 		<key>type</key>
    953 	 * 		<string>foo</string>
    954 	 * 		<key>description</key>
    955 	 * 		<string>blah blah</string>
    956 	 * 		...
    957 	 */
    958 	if (sme_sensor_upstring(dict, "type", sdt_units[i].desc))
    959 		goto invalidate_sensor;
    960 
    961 	if (strlen(edata->desc) == 0) {
    962 		DPRINTF(("%s: invalid description for sensor=%d\n",
    963 		    __func__, edata->sensor));
    964 		goto invalidate_sensor;
    965 	}
    966 
    967 	if (sme_sensor_upstring(dict, "description", edata->desc))
    968 		goto invalidate_sensor;
    969 
    970 	/*
    971 	 * Add sensor's state description.
    972 	 *
    973 	 * 		...
    974 	 * 		<key>state</key>
    975 	 * 		<string>valid</string>
    976 	 * 		...
    977 	 */
    978 	sdt = sme_get_description_table(SME_DESC_STATES);
    979 	for (j = 0; sdt[j].type != -1; j++)
    980 		if (sdt[j].type == edata->state)
    981 			break;
    982 
    983 	if (strcmp(sdt[j].desc, "unknown") == 0) {
    984 		DPRINTF(("%s: invalid state for sensor=%d\n",
    985 		    __func__, edata->sensor));
    986 		goto invalidate_sensor;
    987 	}
    988 
    989 	DPRINTF(("%s: sensor desc=%s type=%d state=%d\n",
    990 	    __func__, edata->desc, edata->units, edata->state));
    991 
    992 	if (sme_sensor_upstring(dict, "state", sdt[j].desc))
    993 		goto invalidate_sensor;
    994 
    995 	/*
    996 	 * Add the monitoring boolean object:
    997 	 *
    998 	 * 		...
    999 	 * 		<key>monitoring-supported</key>
   1000 	 * 		<true/>
   1001 	 *		...
   1002 	 *
   1003 	 * always false on Battery state, Drive and Indicator types.
   1004 	 * They cannot be monitored.
   1005 	 *
   1006 	 */
   1007 	if ((edata->flags & ENVSYS_FMONNOTSUPP) ||
   1008 	    (edata->units == ENVSYS_INDICATOR) ||
   1009 	    (edata->units == ENVSYS_DRIVE) ||
   1010 	    (edata->units == ENVSYS_BATTERY_STATE)) {
   1011 		if (sme_sensor_upbool(dict, "monitoring-supported", false))
   1012 			goto out;
   1013 	} else {
   1014 		if (sme_sensor_upbool(dict, "monitoring-supported", true))
   1015 			goto out;
   1016 	}
   1017 
   1018 	/*
   1019 	 * Add the percentage boolean object, true if ENVSYS_FPERCENT
   1020 	 * is set or false otherwise.
   1021 	 *
   1022 	 * 		...
   1023 	 * 		<key>want-percentage</key>
   1024 	 * 		<true/>
   1025 	 * 		...
   1026 	 */
   1027 	if (edata->flags & ENVSYS_FPERCENT)
   1028 		if (sme_sensor_upbool(dict, "want-percentage", true))
   1029 			goto out;
   1030 
   1031 	/*
   1032 	 * Add the allow-rfact boolean object, true if
   1033 	 * ENVSYS_FCHANGERFACT if set or false otherwise.
   1034 	 *
   1035 	 * 		...
   1036 	 * 		<key>allow-rfact</key>
   1037 	 * 		<true/>
   1038 	 * 		...
   1039 	 */
   1040 	if (edata->units == ENVSYS_SVOLTS_DC ||
   1041 	    edata->units == ENVSYS_SVOLTS_AC) {
   1042 		if (edata->flags & ENVSYS_FCHANGERFACT) {
   1043 			if (sme_sensor_upbool(dict, "allow-rfact", true))
   1044 				goto out;
   1045 		} else {
   1046 			if (sme_sensor_upbool(dict, "allow-rfact", false))
   1047 				goto out;
   1048 		}
   1049 	}
   1050 
   1051 
   1052 	/*
   1053 	 * Add the battery-state object for battery state sensors:
   1054 	 *
   1055 	 * 		...
   1056 	 * 		<key>battery-state</key>
   1057 	 * 		<string>NORMAL</string>
   1058 	 * 		...
   1059 	 */
   1060 	if (edata->units == ENVSYS_BATTERY_STATE) {
   1061 		sdt = sme_get_description_table(SME_DESC_BATTERY_STATES);
   1062 		for (j = 0; sdt[j].type != -1; j++)
   1063 			if (sdt[j].type == edata->value_cur)
   1064 				break;
   1065 
   1066 		if (sme_sensor_upstring(dict, "battery-state", sdt[j].desc))
   1067 			goto out;
   1068 	}
   1069 
   1070 	/*
   1071 	 * Add the drive-state object for drive sensors:
   1072 	 *
   1073 	 * 		...
   1074 	 * 		<key>drive-state</key>
   1075 	 * 		<string>drive is online</string>
   1076 	 * 		...
   1077 	 */
   1078 	if (edata->units == ENVSYS_DRIVE) {
   1079 		sdt = sme_get_description_table(SME_DESC_DRIVE_STATES);
   1080 		for (j = 0; sdt[j].type != -1; j++)
   1081 			if (sdt[j].type == edata->value_cur)
   1082 				break;
   1083 
   1084 		if (sme_sensor_upstring(dict, "drive-state", sdt[j].desc))
   1085 			goto out;
   1086 	}
   1087 
   1088 	/*
   1089 	 * if sensor is enabled, add the following properties...
   1090 	 */
   1091 	if (edata->state == ENVSYS_SVALID) {
   1092 		/*
   1093 		 * 	...
   1094 		 * 	<key>rpms</key>
   1095 		 * 	<integer>2500</integer>
   1096 		 * 	<key>rfact</key>
   1097 		 * 	<integer>10000</integer>
   1098 		 * 	<key>cur-value</key>
   1099 		 * 	<integer>1250</integer>
   1100 		 * 	<key>min-value</key>
   1101 		 * 	<integer>800</integer>
   1102 		 * 	<key>max-value</integer>
   1103 		 * 	<integer>3000</integer>
   1104 		 * 	<key>avg-value</integer>
   1105 		 * 	<integer>1400</integer>
   1106 		 * </dict>
   1107 		 */
   1108 		if (edata->units == ENVSYS_SFANRPM)
   1109 			if (sme_sensor_upuint32(dict, "rpms", edata->rpms))
   1110 				goto out;
   1111 
   1112 		if (edata->units == ENVSYS_SVOLTS_AC ||
   1113 		    edata->units == ENVSYS_SVOLTS_DC)
   1114 			if (sme_sensor_upint32(dict, "rfact", edata->rfact))
   1115 				goto out;
   1116 
   1117 		if (sme_sensor_upint32(dict, "cur-value", edata->value_cur))
   1118 			goto out;
   1119 
   1120 		if (edata->flags & ENVSYS_FVALID_MIN) {
   1121 			if (sme_sensor_upint32(dict,
   1122 					       "min-value",
   1123 					       edata->value_min))
   1124 				goto out;
   1125 		}
   1126 
   1127 		if (edata->flags & ENVSYS_FVALID_MAX) {
   1128 			if (sme_sensor_upint32(dict,
   1129 					       "max-value",
   1130 					       edata->value_max))
   1131 				goto out;
   1132 		}
   1133 
   1134 		if (edata->flags & ENVSYS_FVALID_AVG) {
   1135 			if (sme_sensor_upint32(dict,
   1136 					       "avg-value",
   1137 					        edata->value_avg))
   1138 				goto out;
   1139 		}
   1140 	}
   1141 
   1142 	/*
   1143 	 * 	...
   1144 	 * </array>
   1145 	 *
   1146 	 * Add the dictionary into the array.
   1147 	 *
   1148 	 */
   1149 
   1150 	if (!prop_array_set(array, sme->sme_uniqsensors - 1, dict)) {
   1151 		DPRINTF(("%s: prop_array_add\n", __func__));
   1152 		goto invalidate_sensor;
   1153 	}
   1154 
   1155 	/*
   1156 	 * Add a new event if a monitoring flag was set.
   1157 	 */
   1158 	if (edata->monitor) {
   1159 		sme_evdrv_t = kmem_zalloc(sizeof(*sme_evdrv_t), KM_SLEEP);
   1160 		sme_evdrv_t->sdict = dict;
   1161 		sme_evdrv_t->edata = edata;
   1162 		sme_evdrv_t->sme = sme;
   1163 		sme_evdrv_t->powertype = sdt_units[i].crittype;
   1164 	}
   1165 
   1166 out:
   1167 	return sme_evdrv_t;
   1168 
   1169 invalidate_sensor:
   1170 	edata->flags |= ENVSYS_FNOTVALID;
   1171 	prop_object_release(dict);
   1172 	return sme_evdrv_t;
   1173 }
   1174 
   1175 /*
   1176  * sme_update_dictionary:
   1177  *
   1178  * 	+ Update per-sensor dictionaries with new values if there were
   1179  * 	  changes, otherwise the object in dictionary is untouched.
   1180  */
   1181 int
   1182 sme_update_dictionary(struct sysmon_envsys *sme)
   1183 {
   1184 	const struct sme_description_table *sdt;
   1185 	envsys_data_t *edata;
   1186 	prop_object_t array, dict;
   1187 	int i, j, error, invalid;
   1188 
   1189 	KASSERT(mutex_owned(&sme_mtx));
   1190 
   1191 	error = invalid = 0;
   1192 	array = dict = NULL;
   1193 
   1194 	/* retrieve the array of dictionaries in device. */
   1195 	array = prop_dictionary_get(sme_propd, sme->sme_name);
   1196 	if (prop_object_type(array) != PROP_TYPE_ARRAY) {
   1197 		DPRINTF(("%s: not an array (%s)\n", __func__, sme->sme_name));
   1198 		return EINVAL;
   1199 	}
   1200 
   1201 	/*
   1202 	 * - iterate over all sensors.
   1203 	 * - fetch new data.
   1204 	 * - check if data in dictionary is different than new data.
   1205 	 * - update dictionary if there were changes.
   1206 	 */
   1207 	DPRINTF(("%s: updating '%s' with nsensors=%d\n", __func__,
   1208 	    sme->sme_name, sme->sme_nsensors));
   1209 
   1210 	for (i = 0; i < sme->sme_nsensors; i++) {
   1211 		edata = &sme->sme_sensor_data[i];
   1212 		/* skip invalid sensors */
   1213 		if (edata->flags & ENVSYS_FNOTVALID) {
   1214 			DPRINTF(("%s: invalid sensor=%s idx=%d\n",
   1215 			    __func__, edata->desc, edata->sensor));
   1216 			invalid++;
   1217 			continue;
   1218 		}
   1219 
   1220 		/*
   1221 		 * refresh sensor data via sme_gtredata only if the
   1222 		 * flag is not set.
   1223 		 */
   1224 		if ((sme->sme_flags & SME_DISABLE_GTREDATA) == 0) {
   1225 			error = (*sme->sme_gtredata)(sme, edata);
   1226 			if (error) {
   1227 				DPRINTF(("%s: gtredata[%d] failed\n",
   1228 				    __func__, i));
   1229 				return error;
   1230 			}
   1231 		}
   1232 
   1233 		/* retrieve sensor's dictionary. */
   1234 		dict = prop_array_get(array, i - invalid);
   1235 		if (prop_object_type(dict) != PROP_TYPE_DICTIONARY) {
   1236 			DPRINTF(("%s: not a dictionary (%d:%s)\n",
   1237 			    __func__, edata->sensor, sme->sme_name));
   1238 			return EINVAL;
   1239 		}
   1240 
   1241 		/* update sensor's state */
   1242 		sdt = sme_get_description_table(SME_DESC_STATES);
   1243 		for (j = 0; sdt[j].type != -1; j++)
   1244 			if (sdt[j].type == edata->state)
   1245 				break;
   1246 
   1247 		DPRINTFOBJ(("%s: state=%s type=%d flags=%d "
   1248 		    "units=%d sensor=%d\n", __func__, sdt[j].desc,
   1249 		    sdt[j].type, edata->flags, edata->units, edata->sensor));
   1250 
   1251 		/* update sensor state */
   1252 		error = sme_sensor_upstring(dict, "state", sdt[j].desc);
   1253 		if (error)
   1254 			break;
   1255 
   1256 		/* update sensor type */
   1257 		sdt = sme_get_description_table(SME_DESC_UNITS);
   1258 		for (j = 0; sdt[j].type != -1; j++)
   1259 			if (sdt[j].type == edata->units)
   1260 				break;
   1261 
   1262 		error = sme_sensor_upstring(dict, "type", sdt[j].desc);
   1263 		if (error)
   1264 			break;
   1265 
   1266 		/* update sensor current value */
   1267 		error = sme_sensor_upint32(dict,
   1268 					   "cur-value",
   1269 					   edata->value_cur);
   1270 		if (error)
   1271 			break;
   1272 
   1273 		/*
   1274 		 * Integer and Indicator types do not the following
   1275 		 * values, so skip them.
   1276 		 */
   1277 		if (edata->units == ENVSYS_INTEGER ||
   1278 		    edata->units == ENVSYS_INDICATOR)
   1279 			continue;
   1280 
   1281 		/* update sensor flags */
   1282 		if (edata->flags & ENVSYS_FPERCENT) {
   1283 			error = sme_sensor_upbool(dict,
   1284 						  "want-percentage",
   1285 						  true);
   1286 			if (error)
   1287 				break;
   1288 		}
   1289 
   1290 		if (edata->flags & ENVSYS_FVALID_MAX) {
   1291 			error = sme_sensor_upint32(dict,
   1292 						   "max-value",
   1293 						   edata->value_max);
   1294 			if (error)
   1295 				break;
   1296 		}
   1297 
   1298 		if (edata->flags & ENVSYS_FVALID_MIN) {
   1299 			error = sme_sensor_upint32(dict,
   1300 						   "min-value",
   1301 						   edata->value_min);
   1302 			if (error)
   1303 				break;
   1304 		}
   1305 
   1306 		if (edata->flags & ENVSYS_FVALID_AVG) {
   1307 			error = sme_sensor_upint32(dict,
   1308 						   "avg-value",
   1309 						   edata->value_avg);
   1310 			if (error)
   1311 				break;
   1312 		}
   1313 
   1314 		/* update 'rpms' only in ENVSYS_SFANRPM. */
   1315 		if (edata->units == ENVSYS_SFANRPM) {
   1316 			error = sme_sensor_upuint32(dict,
   1317 						    "rpms",
   1318 						    edata->rpms);
   1319 			if (error)
   1320 				break;
   1321 		}
   1322 
   1323 		/* update 'rfact' only in ENVSYS_SVOLTS_[AD]C. */
   1324 		if (edata->units == ENVSYS_SVOLTS_AC ||
   1325 		    edata->units == ENVSYS_SVOLTS_DC) {
   1326 			error = sme_sensor_upint32(dict,
   1327 						   "rfact",
   1328 						   edata->rfact);
   1329 			if (error)
   1330 				break;
   1331 		}
   1332 
   1333 		/* update 'drive-state' only in ENVSYS_DRIVE. */
   1334 		if (edata->units == ENVSYS_DRIVE) {
   1335 			sdt = sme_get_description_table(SME_DESC_DRIVE_STATES);
   1336 			for (j = 0; sdt[j].type != -1; j++)
   1337 				if (sdt[j].type == edata->value_cur)
   1338 					break;
   1339 
   1340 			error = sme_sensor_upstring(dict,
   1341 						    "drive-state",
   1342 						    sdt[j].desc);
   1343 			if (error)
   1344 				break;
   1345 		}
   1346 
   1347 		/* update 'battery-state' only in ENVSYS_BATTERY_STATE. */
   1348 		if (edata->units == ENVSYS_BATTERY_STATE) {
   1349 			sdt =
   1350 			    sme_get_description_table(SME_DESC_BATTERY_STATES);
   1351 			for (j = 0; sdt[j].type != -1; j++)
   1352 				if (sdt[j].type == edata->value_cur)
   1353 					break;
   1354 
   1355 			error = sme_sensor_upstring(dict,
   1356 						    "battery-state",
   1357 						    sdt[j].desc);
   1358 			if (error)
   1359 				break;
   1360 		}
   1361 	}
   1362 
   1363 	return error;
   1364 }
   1365 
   1366 /*
   1367  * sme_userset_dictionary:
   1368  *
   1369  * 	+ Parse the userland sensor's dictionary and run the appropiate
   1370  * 	  tasks that was requested.
   1371  */
   1372 int
   1373 sme_userset_dictionary(struct sysmon_envsys *sme, prop_dictionary_t udict,
   1374 		       prop_array_t array)
   1375 {
   1376 	const struct sme_description_table *sdt;
   1377 	envsys_data_t *edata, *nedata;
   1378 	prop_dictionary_t dict;
   1379 	prop_object_t obj, obj1, obj2;
   1380 	int32_t critval;
   1381 	int i, invalid, error;
   1382 	const char *blah, *sname;
   1383 	bool targetfound = false;
   1384 
   1385 	error = invalid = 0;
   1386 	blah = sname = NULL;
   1387 
   1388 	/* get sensor's index from userland dictionary. */
   1389 	obj = prop_dictionary_get(udict, "index");
   1390 	if (prop_object_type(obj) != PROP_TYPE_STRING) {
   1391 		DPRINTF(("%s: sensor-name failed\n", __func__));
   1392 		return EINVAL;
   1393 	}
   1394 
   1395 	/* iterate over the sensors to find the right one */
   1396 	for (i = 0; i < sme->sme_nsensors; i++) {
   1397 		edata = &sme->sme_sensor_data[i];
   1398 		/*
   1399 		 * skip invalid sensors.
   1400 		 */
   1401 		if (edata->flags & ENVSYS_FNOTVALID) {
   1402 			invalid++;
   1403 			continue;
   1404 		}
   1405 
   1406 		dict = prop_array_get(array, i - invalid);
   1407 		obj1 = prop_dictionary_get(dict, "index");
   1408 
   1409 		/* is it our sensor? */
   1410 		if (!prop_string_equals(obj1, obj))
   1411 			continue;
   1412 
   1413 		/*
   1414 		 * Check if a new description operation was
   1415 		 * requested by the user and set new description.
   1416 		 */
   1417 		if ((obj2 = prop_dictionary_get(udict, "description"))) {
   1418 			targetfound = true;
   1419 			blah = prop_string_cstring_nocopy(obj2);
   1420 
   1421 			for (i = 0; i < sme->sme_nsensors; i++) {
   1422 				if (i == edata->sensor)
   1423 					continue;
   1424 
   1425 				nedata = &sme->sme_sensor_data[i];
   1426 				if (strcmp(blah, nedata->desc) == 0) {
   1427 					error = EEXIST;
   1428 					break;
   1429 				}
   1430 			}
   1431 
   1432 			if (error)
   1433 				break;
   1434 
   1435 			error = sme_sensor_upstring(dict,
   1436 						    "description",
   1437 						    blah);
   1438 			if (error)
   1439 				break;
   1440 
   1441 			edata->upropset |= USERPROP_DESC;
   1442 		}
   1443 
   1444 		/*
   1445 		 * did the user want to change the rfact?
   1446 		 */
   1447 		obj2 = prop_dictionary_get(udict, "rfact");
   1448 		if (obj2) {
   1449 			targetfound = true;
   1450 			if (edata->flags & ENVSYS_FCHANGERFACT) {
   1451 				edata->rfact = prop_number_integer_value(obj2);
   1452 				edata->upropset |= USERPROP_RFACT;
   1453 			} else {
   1454 				error = ENOTSUP;
   1455 				break;
   1456 			}
   1457 		}
   1458 
   1459 		sdt = sme_get_description_table(SME_DESC_UNITS);
   1460 		for (i = 0; sdt[i].type != -1; i++)
   1461 			if (sdt[i].type == edata->units)
   1462 				break;
   1463 
   1464 
   1465 		/*
   1466 		 * did the user want to set a critical capacity event?
   1467 		 *
   1468 		 * NOTE: if sme_event_register returns EEXIST that means
   1469 		 * the object is already there, but this is not a real
   1470 		 * error, because the object might be updated.
   1471 		 */
   1472 		obj2 = prop_dictionary_get(udict, "critical-capacity");
   1473 		if (obj2) {
   1474 			targetfound = true;
   1475 			if ((edata->flags & ENVSYS_FMONNOTSUPP) ||
   1476 			    (edata->flags & ENVSYS_FPERCENT) == 0) {
   1477 				error = ENOTSUP;
   1478 				break;
   1479 			}
   1480 
   1481 			critval = prop_number_integer_value(obj2);
   1482 			error = sme_event_register(dict,
   1483 					      edata,
   1484 					      sme->sme_name,
   1485 					      "critical-capacity",
   1486 					      critval,
   1487 					      PENVSYS_EVENT_BATT_USERCAP,
   1488 					      sdt[i].crittype);
   1489 			if (error == EEXIST)
   1490 				error = 0;
   1491 			if (!error)
   1492 				edata->upropset |= USERPROP_BATTCAP;
   1493 		}
   1494 
   1495 		/*
   1496 		 * did the user want to set a critical max event?
   1497 		 */
   1498 		obj2 = prop_dictionary_get(udict, "critical-max");
   1499 		if (obj2) {
   1500 			targetfound = true;
   1501 			if (edata->units == ENVSYS_INDICATOR ||
   1502 			    edata->flags & ENVSYS_FMONNOTSUPP) {
   1503 				error = ENOTSUP;
   1504 				break;
   1505 			}
   1506 
   1507 			critval = prop_number_integer_value(obj2);
   1508 			error = sme_event_register(dict,
   1509 					      edata,
   1510 					      sme->sme_name,
   1511 					      "critical-max",
   1512 					      critval,
   1513 					      PENVSYS_EVENT_USER_CRITMAX,
   1514 					      sdt[i].crittype);
   1515 			if (error == EEXIST)
   1516 				error = 0;
   1517 			if (!error)
   1518 				edata->upropset |= USERPROP_CRITMAX;
   1519 		}
   1520 
   1521 		/*
   1522 		 * did the user want to set a critical min event?
   1523 		 */
   1524 		obj2 = prop_dictionary_get(udict, "critical-min");
   1525 		if (obj2) {
   1526 			targetfound = true;
   1527 			if (edata->units == ENVSYS_INDICATOR ||
   1528 			    edata->flags & ENVSYS_FMONNOTSUPP) {
   1529 				error = ENOTSUP;
   1530 				break;
   1531 			}
   1532 
   1533 			critval = prop_number_integer_value(obj2);
   1534 			error = sme_event_register(dict,
   1535 					      edata,
   1536 					      sme->sme_name,
   1537 					      "critical-min",
   1538 					      critval,
   1539 					      PENVSYS_EVENT_USER_CRITMIN,
   1540 					      sdt[i].crittype);
   1541 			if (error == EEXIST)
   1542 				error = 0;
   1543 			if (!error)
   1544 				edata->upropset |= USERPROP_CRITMIN;
   1545 		}
   1546 
   1547 		/*
   1548 		 * All objects in dictionary were processed.
   1549 		 */
   1550 		break;
   1551 	}
   1552 
   1553 	/* invalid target? return the error */
   1554 	if (!targetfound)
   1555 		error = EINVAL;
   1556 
   1557 	return error;
   1558 }
   1559