1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright 2020 Joyent, Inc.
25 */
26
27 /*
28 * Functions in this file are shared between the disk and ses enumerators.
29 *
30 * A topo_list_t of all disks is returned by a successful disk_list_gather()
31 * call, and the list is freed by a disk_list_free(). To create a 'disk' topo
32 * node below a specific 'bay' parent node either disk_declare_path() or
33 * disk_declare_addr() are called. The caller determines which 'disk' is
34 * in which 'bay'. A disk's 'label' and 'authority' information come from
35 * its parent 'bay' node.
36 */
37
38 #include <ctype.h>
39 #include <strings.h>
40 #include <libdevinfo.h>
41 #include <libdiskmgt.h>
42 #include <devid.h>
43 #include <sys/libdevid.h>
44 #include <pthread.h>
45 #include <inttypes.h>
46 #include <sys/dkio.h>
47 #include <sys/scsi/scsi_types.h>
48 #include <fm/topo_mod.h>
49 #include <fm/topo_list.h>
50 #include <fm/libdiskstatus.h>
51 #include <sys/fm/protocol.h>
52 #include <sys/scsi/generic/inquiry.h>
53 #include "disk.h"
54
55 /* common callback information for di_walk_node() and di_devlink_walk */
56 typedef struct disk_cbdata {
57 topo_mod_t *dcb_mod;
58 topo_list_t *dcb_list;
59
60 di_devlink_handle_t dcb_devhdl;
61 dev_di_node_t *dcb_dnode; /* for di_devlink_walk only */
62 } disk_cbdata_t;
63
64 /*
65 * Methods for disks. This is used by the disk-transport module to
66 * generate ereports based off SCSI disk status.
67 */
68 static int disk_status(topo_mod_t *, tnode_t *, topo_version_t,
69 nvlist_t *, nvlist_t **);
70
71 static const topo_method_t disk_methods[] = {
72 { TOPO_METH_DISK_STATUS, TOPO_METH_DISK_STATUS_DESC,
73 TOPO_METH_DISK_STATUS_VERSION, TOPO_STABILITY_INTERNAL,
74 disk_status },
75 { NULL }
76 };
77
78 static int disk_temp_reading(topo_mod_t *, tnode_t *, topo_version_t,
79 nvlist_t *, nvlist_t **);
80
81 #define TOPO_METH_DISK_TEMP "disk_temp_reading"
82 #define TOPO_METH_DISK_TEMP_DESC "Disk Temperature Reading"
83 #define TOPO_METH_DISK_TEMP_VERSION 0
84
85 static const topo_method_t disk_fac_methods[] = {
86 { TOPO_METH_DISK_TEMP, TOPO_METH_DISK_TEMP_DESC,
87 TOPO_METH_DISK_TEMP_VERSION, TOPO_STABILITY_INTERNAL,
88 disk_temp_reading },
89 { NULL }
90 };
91
92 /*
93 * Set the properties of the disk node, from dev_di_node_t data.
94 * Properties include:
95 * group: protocol properties: resource, asru, label, fru
96 * group: authority properties: product-id, chasis-id, server-id
97 * group: io properties: devfs-path, devid
98 * group: storage properties:
99 * - logical-disk, disk-model, disk-manufacturer, serial-number
100 * - firmware-revision, capacity-in-bytes
101 *
102 * NOTE: the io and storage groups won't be present if the dnode passed in is
103 * NULL. This happens when a disk is found through ses, but is not enumerated
104 * in the devinfo tree.
105 */
106 static int
disk_set_props(topo_mod_t * mod,tnode_t * parent,tnode_t * dtn,dev_di_node_t * dnode)107 disk_set_props(topo_mod_t *mod, tnode_t *parent,
108 tnode_t *dtn, dev_di_node_t *dnode)
109 {
110 nvlist_t *asru = NULL, *drive_attrs;
111 char *label = NULL;
112 nvlist_t *fmri = NULL;
113 dm_descriptor_t drive_descr = 0;
114 uint32_t rpm;
115 int err;
116
117 /* pull the label property down from our parent 'bay' node */
118 if (topo_node_label(parent, &label, &err) != 0) {
119 if (err != ETOPO_PROP_NOENT) {
120 topo_mod_dprintf(mod, "disk_set_props: "
121 "label error %s\n", topo_strerror(err));
122 goto error;
123 }
124 } else if (topo_prop_set_string(dtn, TOPO_PGROUP_PROTOCOL,
125 TOPO_PROP_LABEL, TOPO_PROP_MUTABLE, label, &err) != 0) {
126 topo_mod_dprintf(mod, "disk_set_props: "
127 "label_set error %s\n", topo_strerror(err));
128 goto error;
129 }
130
131 /* get the resource fmri, and use it as the fru */
132 if (topo_node_resource(dtn, &fmri, &err) != 0) {
133 topo_mod_dprintf(mod, "disk_set_props: "
134 "resource error: %s\n", topo_strerror(err));
135 goto error;
136 }
137 if (topo_node_fru_set(dtn, fmri, 0, &err) != 0) {
138 topo_mod_dprintf(mod, "disk_set_props: "
139 "fru_set error: %s\n", topo_strerror(err));
140 goto error;
141 }
142
143 /* create/set the authority group */
144 if ((topo_pgroup_create(dtn, &disk_auth_pgroup, &err) != 0) &&
145 (err != ETOPO_PROP_DEFD)) {
146 topo_mod_dprintf(mod, "disk_set_props: "
147 "create disk_auth error %s\n", topo_strerror(err));
148 goto error;
149 }
150
151 /* create the storage group */
152 if (topo_pgroup_create(dtn, &storage_pgroup, &err) != 0) {
153 topo_mod_dprintf(mod, "disk_set_props: "
154 "create storage error %s\n", topo_strerror(err));
155 goto error;
156 }
157
158 /* no dnode was found for this disk - skip the io and storage groups */
159 if (dnode == NULL) {
160 err = 0;
161 goto out;
162 }
163
164 /* form and set the asru */
165 if ((asru = topo_mod_devfmri(mod, FM_DEV_SCHEME_VERSION,
166 dnode->ddn_dpath, dnode->ddn_devid)) == NULL) {
167 err = ETOPO_FMRI_UNKNOWN;
168 topo_mod_dprintf(mod, "disk_set_props: "
169 "asru error %s\n", topo_strerror(err));
170 goto error;
171 }
172 if (topo_node_asru_set(dtn, asru, 0, &err) != 0) {
173 topo_mod_dprintf(mod, "disk_set_props: "
174 "asru_set error %s\n", topo_strerror(err));
175 goto error;
176 }
177
178 /* create/set the devfs-path and devid in the io group */
179 if (topo_pgroup_create(dtn, &io_pgroup, &err) != 0) {
180 topo_mod_dprintf(mod, "disk_set_props: "
181 "create io error %s\n", topo_strerror(err));
182 goto error;
183 }
184
185 if (topo_prop_set_string(dtn, TOPO_PGROUP_IO, TOPO_IO_DEV_PATH,
186 TOPO_PROP_IMMUTABLE, dnode->ddn_dpath, &err) != 0) {
187 topo_mod_dprintf(mod, "disk_set_props: "
188 "set dev error %s\n", topo_strerror(err));
189 goto error;
190 }
191
192 if (dnode->ddn_devid && topo_prop_set_string(dtn, TOPO_PGROUP_IO,
193 TOPO_IO_DEVID, TOPO_PROP_IMMUTABLE, dnode->ddn_devid, &err) != 0) {
194 topo_mod_dprintf(mod, "disk_set_props: "
195 "set devid error %s\n", topo_strerror(err));
196 goto error;
197 }
198
199 if (dnode->ddn_ppath_count != 0 &&
200 topo_prop_set_string_array(dtn, TOPO_PGROUP_IO, TOPO_IO_PHYS_PATH,
201 TOPO_PROP_IMMUTABLE, (const char **)dnode->ddn_ppath,
202 dnode->ddn_ppath_count, &err) != 0) {
203 topo_mod_dprintf(mod, "disk_set_props: "
204 "set phys-path error %s\n", topo_strerror(err));
205 goto error;
206 }
207
208 /* set the storage group public /dev name */
209 if (dnode->ddn_lpath != NULL &&
210 topo_prop_set_string(dtn, TOPO_PGROUP_STORAGE,
211 TOPO_STORAGE_LOGICAL_DISK_NAME, TOPO_PROP_IMMUTABLE,
212 dnode->ddn_lpath, &err) != 0) {
213 topo_mod_dprintf(mod, "disk_set_props: "
214 "set disk_name error %s\n", topo_strerror(err));
215 goto error;
216 }
217
218 /* populate other misc storage group properties */
219 if (dnode->ddn_mfg && (topo_prop_set_string(dtn, TOPO_PGROUP_STORAGE,
220 TOPO_STORAGE_MANUFACTURER, TOPO_PROP_IMMUTABLE,
221 dnode->ddn_mfg, &err) != 0)) {
222 topo_mod_dprintf(mod, "disk_set_props: "
223 "set mfg error %s\n", topo_strerror(err));
224 goto error;
225 }
226 if (dnode->ddn_model && (topo_prop_set_string(dtn, TOPO_PGROUP_STORAGE,
227 TOPO_STORAGE_MODEL, TOPO_PROP_IMMUTABLE,
228 dnode->ddn_model, &err) != 0)) {
229 topo_mod_dprintf(mod, "disk_set_props: "
230 "set model error %s\n", topo_strerror(err));
231 goto error;
232 }
233 if (dnode->ddn_serial && (topo_prop_set_string(dtn, TOPO_PGROUP_STORAGE,
234 TOPO_STORAGE_SERIAL_NUM, TOPO_PROP_IMMUTABLE,
235 dnode->ddn_serial, &err) != 0)) {
236 topo_mod_dprintf(mod, "disk_set_props: "
237 "set serial error %s\n", topo_strerror(err));
238 goto error;
239 }
240 if (dnode->ddn_firm && (topo_prop_set_string(dtn, TOPO_PGROUP_STORAGE,
241 TOPO_STORAGE_FIRMWARE_REV, TOPO_PROP_IMMUTABLE,
242 dnode->ddn_firm, &err) != 0)) {
243 topo_mod_dprintf(mod, "disk_set_props: "
244 "set firm error %s\n", topo_strerror(err));
245 goto error;
246 }
247 if (dnode->ddn_cap && (topo_prop_set_string(dtn, TOPO_PGROUP_STORAGE,
248 TOPO_STORAGE_CAPACITY, TOPO_PROP_IMMUTABLE,
249 dnode->ddn_cap, &err) != 0)) {
250 topo_mod_dprintf(mod, "disk_set_props: "
251 "set cap error %s\n", topo_strerror(err));
252 goto error;
253 }
254
255 if (dnode->ddn_devid == NULL ||
256 (drive_descr = dm_get_descriptor_by_name(DM_DRIVE,
257 dnode->ddn_devid, &err)) == 0 ||
258 (drive_attrs = dm_get_attributes(drive_descr, &err)) == NULL)
259 goto out;
260
261 if (nvlist_lookup_boolean(drive_attrs, DM_SOLIDSTATE) == 0 ||
262 nvlist_lookup_uint32(drive_attrs, DM_RPM, &rpm) != 0)
263 goto out;
264
265 if (topo_prop_set_uint32(dtn, TOPO_PGROUP_STORAGE, TOPO_STORAGE_RPM,
266 TOPO_PROP_IMMUTABLE, rpm, &err) != 0) {
267 topo_mod_dprintf(mod, "disk_set_props: "
268 "set rpm error %s\n", topo_strerror(err));
269 dm_free_descriptor(drive_descr);
270 goto error;
271 }
272 err = 0;
273
274 /*
275 * Create UFM node to capture the drive firmware version
276 */
277 if (dnode->ddn_firm != NULL) {
278 topo_ufm_slot_info_t slotinfo = { 0 };
279
280 slotinfo.usi_version = dnode->ddn_firm;
281 slotinfo.usi_active = B_TRUE;
282 if (strcmp(topo_node_name(parent), USB_DEVICE) == 0)
283 slotinfo.usi_mode = TOPO_UFM_SLOT_MODE_NONE;
284 else
285 slotinfo.usi_mode = TOPO_UFM_SLOT_MODE_WO;
286 if (topo_node_range_create(mod, dtn, UFM, 0, 0) != 0 ||
287 topo_mod_create_ufm(mod, dtn, 0, "drive firmware",
288 &slotinfo) == NULL) {
289 topo_mod_dprintf(mod, "failed to create %s node", UFM);
290 goto out;
291 }
292 }
293
294 out:
295 if (drive_descr != 0)
296 dm_free_descriptor(drive_descr);
297 nvlist_free(fmri);
298 if (label)
299 topo_mod_strfree(mod, label);
300 nvlist_free(asru);
301 return (err);
302
303 error: err = topo_mod_seterrno(mod, err);
304 goto out;
305 }
306
307 /*
308 * Trim leading and trailing whitespace from the string.
309 */
310 static char *
disk_trim_whitespace(topo_mod_t * mod,const char * begin)311 disk_trim_whitespace(topo_mod_t *mod, const char *begin)
312 {
313 const char *end;
314 char *buf;
315 size_t count;
316
317 if (begin == NULL)
318 return (NULL);
319
320 end = begin + strlen(begin);
321
322 while (begin < end && isspace(*begin))
323 begin++;
324 while (begin < end && isspace(*(end - 1)))
325 end--;
326
327 count = end - begin;
328 if ((buf = topo_mod_alloc(mod, count + 1)) == NULL)
329 return (NULL);
330
331 (void) strlcpy(buf, begin, count + 1);
332
333 return (buf);
334 }
335
336 /*ARGSUSED*/
337 static int
disk_temp_reading(topo_mod_t * mod,tnode_t * node,topo_version_t vers,nvlist_t * in,nvlist_t ** out)338 disk_temp_reading(topo_mod_t *mod, tnode_t *node, topo_version_t vers,
339 nvlist_t *in, nvlist_t **out)
340 {
341 char *devid;
342 uint32_t temp;
343 dm_descriptor_t drive_descr = 0;
344 nvlist_t *drive_stats, *pargs, *nvl;
345 int err;
346
347 if (vers > TOPO_METH_DISK_TEMP_VERSION)
348 return (topo_mod_seterrno(mod, ETOPO_METHOD_VERNEW));
349
350 if (nvlist_lookup_nvlist(in, TOPO_PROP_ARGS, &pargs) != 0 ||
351 nvlist_lookup_string(pargs, TOPO_IO_DEVID, &devid) != 0) {
352 topo_mod_dprintf(mod, "Failed to lookup %s arg",
353 TOPO_IO_DEVID);
354 return (topo_mod_seterrno(mod, EMOD_NVL_INVAL));
355 }
356
357 if ((drive_descr = dm_get_descriptor_by_name(DM_DRIVE, devid,
358 &err)) == 0) {
359 topo_mod_dprintf(mod, "failed to get drive decriptor for %s",
360 devid);
361 return (topo_mod_seterrno(mod, EMOD_UNKNOWN));
362 }
363
364 if ((drive_stats = dm_get_stats(drive_descr, DM_DRV_STAT_TEMPERATURE,
365 &err)) == NULL ||
366 nvlist_lookup_uint32(drive_stats, DM_TEMPERATURE, &temp) != 0) {
367 topo_mod_dprintf(mod, "failed to read disk temp for %s",
368 devid);
369 dm_free_descriptor(drive_descr);
370 return (topo_mod_seterrno(mod, EMOD_UNKNOWN));
371 }
372 dm_free_descriptor(drive_descr);
373
374 if (topo_mod_nvalloc(mod, &nvl, NV_UNIQUE_NAME) != 0 ||
375 nvlist_add_string(nvl, TOPO_PROP_VAL_NAME,
376 TOPO_SENSOR_READING) != 0 ||
377 nvlist_add_uint32(nvl, TOPO_PROP_VAL_TYPE, TOPO_TYPE_DOUBLE) !=
378 0 || nvlist_add_double(nvl, TOPO_PROP_VAL_VAL, (double)temp) != 0) {
379 topo_mod_dprintf(mod, "Failed to allocate 'out' nvlist\n");
380 nvlist_free(nvl);
381 return (topo_mod_seterrno(mod, EMOD_NOMEM));
382 }
383 *out = nvl;
384
385 return (0);
386 }
387
388 static int
disk_add_temp_sensor(topo_mod_t * mod,tnode_t * pnode,const char * devid)389 disk_add_temp_sensor(topo_mod_t *mod, tnode_t *pnode, const char *devid)
390 {
391 tnode_t *fnode;
392 topo_pgroup_info_t pgi;
393 nvlist_t *arg_nvl = NULL;
394 int err;
395
396 if ((fnode = topo_node_facbind(mod, pnode, "temp",
397 TOPO_FAC_TYPE_SENSOR)) == NULL) {
398 topo_mod_dprintf(mod, "failed to bind facility node");
399 /* errno set */
400 return (-1);
401 }
402
403 /*
404 * Set props:
405 * - facility/sensor-class
406 * - facility/sensor-type
407 * - facility/units
408 */
409 pgi.tpi_name = TOPO_PGROUP_FACILITY;
410 pgi.tpi_namestab = TOPO_STABILITY_PRIVATE;
411 pgi.tpi_datastab = TOPO_STABILITY_PRIVATE;
412 pgi.tpi_version = 1;
413 if (topo_pgroup_create(fnode, &pgi, &err) != 0) {
414 if (err != ETOPO_PROP_DEFD) {
415 topo_mod_dprintf(mod, "pgroups create failure (%s)\n",
416 topo_strerror(err));
417 /* errno set */
418 goto err;
419 }
420 }
421 if (topo_prop_set_string(fnode, TOPO_PGROUP_FACILITY,
422 TOPO_SENSOR_CLASS, TOPO_PROP_IMMUTABLE,
423 TOPO_SENSOR_CLASS_THRESHOLD, &err) != 0 ||
424 topo_prop_set_uint32(fnode, TOPO_PGROUP_FACILITY,
425 TOPO_FACILITY_TYPE, TOPO_PROP_IMMUTABLE, TOPO_SENSOR_TYPE_TEMP,
426 &err) != 0 ||
427 topo_prop_set_uint32(fnode, TOPO_PGROUP_FACILITY,
428 TOPO_SENSOR_UNITS, TOPO_PROP_IMMUTABLE,
429 TOPO_SENSOR_UNITS_DEGREES_C, &err) != 0) {
430 topo_mod_dprintf(mod, "Failed to set props on facnode (%s)",
431 topo_strerror(err));
432 /* errno set */
433 goto err;
434 }
435
436 /*
437 * Register a property method for facility/reading
438 */
439 if (topo_method_register(mod, fnode, disk_fac_methods) < 0) {
440 topo_mod_dprintf(mod, "failed to register facility methods");
441 goto err;
442 }
443 if (topo_mod_nvalloc(mod, &arg_nvl, NV_UNIQUE_NAME) < 0 ||
444 nvlist_add_string(arg_nvl, TOPO_IO_DEVID, devid) != 0) {
445 topo_mod_dprintf(mod, "Failed build arg nvlist\n");
446 (void) topo_mod_seterrno(mod, EMOD_NOMEM);
447 goto err;
448 }
449 if (topo_prop_method_register(fnode, TOPO_PGROUP_FACILITY,
450 TOPO_SENSOR_READING, TOPO_TYPE_DOUBLE, "disk_temp_reading",
451 arg_nvl, &err) != 0) {
452 topo_mod_dprintf(mod, "Failed to register %s propmeth "
453 "on fac node %s (%s)\n", TOPO_SENSOR_READING,
454 topo_node_name(fnode), topo_strerror(err));
455 /* errno set */
456 goto err;
457 }
458 nvlist_free(arg_nvl);
459 return (0);
460 err:
461 topo_node_unbind(fnode);
462 nvlist_free(arg_nvl);
463 return (-1);
464 }
465
466 /* create the disk topo node */
467 static int
disk_tnode_create(topo_mod_t * mod,tnode_t * parent,dev_di_node_t * dnode,const char * name,topo_instance_t i,tnode_t ** rval)468 disk_tnode_create(topo_mod_t *mod, tnode_t *parent,
469 dev_di_node_t *dnode, const char *name, topo_instance_t i, tnode_t **rval)
470 {
471 int len;
472 nvlist_t *fmri;
473 tnode_t *dtn;
474 char *part = NULL;
475 nvlist_t *auth;
476 char *mfg, *model, *firm, *serial;
477
478 *rval = NULL;
479 if (dnode != NULL) {
480 mfg = topo_mod_clean_str(mod, dnode->ddn_mfg);
481 model = topo_mod_clean_str(mod, dnode->ddn_model);
482 firm = topo_mod_clean_str(mod, dnode->ddn_firm);
483 serial = topo_mod_clean_str(mod, dnode->ddn_serial);
484 } else {
485 mfg = model = firm = serial = NULL;
486 }
487
488 /* form 'part=' of fmri as "<mfg>-<model>" */
489 if (mfg != NULL && model != NULL) {
490 len = strlen(mfg) + 1 + strlen(model) + 1;
491 if ((part = topo_mod_alloc(mod, len)) != NULL)
492 (void) snprintf(part, len, "%s-%s",
493 mfg, model);
494 }
495
496 auth = topo_mod_auth(mod, parent);
497 fmri = topo_mod_hcfmri(mod, parent, FM_HC_SCHEME_VERSION, name, i, NULL,
498 auth, part ? part : model, firm, serial);
499 nvlist_free(auth);
500
501 topo_mod_strfree(mod, part);
502 topo_mod_strfree(mod, mfg);
503 topo_mod_strfree(mod, model);
504 topo_mod_strfree(mod, firm);
505 topo_mod_strfree(mod, serial);
506
507 if (fmri == NULL) {
508 topo_mod_dprintf(mod, "disk_tnode_create: "
509 "hcfmri (%s%" PRIu64 "/%s%" PRIu64 ") error %s\n",
510 topo_node_name(parent), topo_node_instance(parent),
511 name, i, topo_strerror(topo_mod_errno(mod)));
512 return (-1);
513 }
514
515 if ((dtn = topo_node_bind(mod, parent, name, i, fmri)) == NULL) {
516 if (topo_mod_errno(mod) == EMOD_NODE_BOUND) {
517 /*
518 * if disk 0 is already there then we're done
519 */
520 nvlist_free(fmri);
521 return (0);
522 }
523 topo_mod_dprintf(mod, "disk_tnode_create: "
524 "bind (%s%" PRIu64 "/%s%" PRIu64 ") error %s\n",
525 topo_node_name(parent), topo_node_instance(parent),
526 name, i, topo_strerror(topo_mod_errno(mod)));
527 nvlist_free(fmri);
528 return (-1);
529 }
530 nvlist_free(fmri);
531
532 /* add the properties of the disk */
533 if (disk_set_props(mod, parent, dtn, dnode) != 0) {
534 topo_mod_dprintf(mod, "disk_tnode_create: "
535 "disk_set_props (%s%" PRIu64 "/%s%" PRIu64 ") error %s\n",
536 topo_node_name(parent), topo_node_instance(parent),
537 name, i, topo_strerror(topo_mod_errno(mod)));
538 topo_node_unbind(dtn);
539 return (-1);
540 }
541
542 if (dnode != NULL && dnode->ddn_devid != NULL &&
543 disk_add_temp_sensor(mod, dtn, dnode->ddn_devid) != 0) {
544 topo_mod_dprintf(mod, "disk_tnode_create: failed to create "
545 "temperature sensor node on bay=%" PRIu64 "/disk=0",
546 topo_node_instance(parent));
547 }
548 *rval = dtn;
549 return (0);
550 }
551
552 static int
disk_declare(topo_mod_t * mod,tnode_t * parent,dev_di_node_t * dnode,tnode_t ** childp)553 disk_declare(topo_mod_t *mod, tnode_t *parent, dev_di_node_t *dnode,
554 tnode_t **childp)
555 {
556 tnode_t *dtn = NULL;
557 int rval;
558
559 rval = disk_tnode_create(mod, parent, dnode, DISK, 0, &dtn);
560 if (dtn == NULL) {
561 if (rval == 0)
562 return (0);
563 topo_mod_dprintf(mod, "disk_declare: "
564 "disk_tnode_create error %s\n",
565 topo_strerror(topo_mod_errno(mod)));
566 return (-1);
567 }
568
569 /* register disk_methods against the disk topo node */
570 if (topo_method_register(mod, dtn, disk_methods) != 0) {
571 topo_mod_dprintf(mod, "disk_declare: "
572 "topo_method_register error %s\n",
573 topo_strerror(topo_mod_errno(mod)));
574 topo_node_unbind(dtn);
575 return (-1);
576 }
577 if (childp != NULL)
578 *childp = dtn;
579 return (0);
580 }
581
582 int
disk_declare_path(topo_mod_t * mod,tnode_t * parent,topo_list_t * listp,const char * path)583 disk_declare_path(topo_mod_t *mod, tnode_t *parent, topo_list_t *listp,
584 const char *path)
585 {
586 dev_di_node_t *dnode;
587 int i;
588
589 /*
590 * Check for match using physical phci (ddn_ppath). Use
591 * di_devfs_path_match so generic.vs.non-generic names match.
592 */
593 for (dnode = topo_list_next(listp); dnode != NULL;
594 dnode = topo_list_next(dnode)) {
595 if (dnode->ddn_ppath == NULL)
596 continue;
597
598 for (i = 0; i < dnode->ddn_ppath_count; i++) {
599 if (di_devfs_path_match(dnode->ddn_ppath[0], path))
600 return (disk_declare(mod, parent, dnode, NULL));
601 }
602 }
603
604 topo_mod_dprintf(mod, "disk_declare_path: "
605 "failed to find disk matching path %s", path);
606 return (0);
607 }
608
609 int
disk_declare_addr(topo_mod_t * mod,tnode_t * parent,topo_list_t * listp,const char * addr,tnode_t ** childp)610 disk_declare_addr(topo_mod_t *mod, tnode_t *parent, topo_list_t *listp,
611 const char *addr, tnode_t **childp)
612 {
613 dev_di_node_t *dnode;
614 int i;
615
616 /* Check for match using addr. */
617 for (dnode = topo_list_next(listp); dnode != NULL;
618 dnode = topo_list_next(dnode)) {
619 if (dnode->ddn_target_port == NULL)
620 continue;
621
622 for (i = 0; i < dnode->ddn_ppath_count; i++) {
623 if ((dnode->ddn_target_port[i] != NULL) &&
624 (strncmp(dnode->ddn_target_port[i], addr,
625 strcspn(dnode->ddn_target_port[i], ":"))) == 0) {
626 topo_mod_dprintf(mod, "disk_declare_addr: "
627 "found disk matching addr %s", addr);
628 return (disk_declare(mod, parent, dnode,
629 childp));
630 }
631 }
632 }
633
634 topo_mod_dprintf(mod, "disk_declare_addr: "
635 "failed to find disk matching addr %s", addr);
636
637 return (1);
638 }
639
640 /*
641 * Try to find a disk based on the bridge-port property. This is most often used
642 * for SATA devices which are attached to a SAS controller and are therefore
643 * behind a SATL bridge port. SES only knows of devices based on this SAS WWN,
644 * not based on any SATA GUIDs.
645 */
646 int
disk_declare_bridge(topo_mod_t * mod,tnode_t * parent,topo_list_t * listp,const char * addr,tnode_t ** childp)647 disk_declare_bridge(topo_mod_t *mod, tnode_t *parent, topo_list_t *listp,
648 const char *addr, tnode_t **childp)
649 {
650 dev_di_node_t *dnode;
651 int i;
652
653 /* Check for match using addr. */
654 for (dnode = topo_list_next(listp); dnode != NULL;
655 dnode = topo_list_next(dnode)) {
656 if (dnode->ddn_bridge_port == NULL)
657 continue;
658
659 for (i = 0; i < dnode->ddn_ppath_count; i++) {
660 if ((dnode->ddn_bridge_port[i] != NULL) &&
661 (strncmp(dnode->ddn_bridge_port[i], addr,
662 strcspn(dnode->ddn_bridge_port[i], ":"))) == 0) {
663 topo_mod_dprintf(mod, "disk_declare_bridge: "
664 "found disk matching bridge %s", addr);
665 return (disk_declare(mod, parent, dnode,
666 childp));
667 }
668 }
669 }
670
671 topo_mod_dprintf(mod, "disk_declare_bridge: "
672 "failed to find disk matching bridge %s", addr);
673
674 return (1);
675 }
676
677 /*
678 * Used to declare a disk that has been discovered through other means (usually
679 * ses), that is not enumerated in the devinfo tree.
680 */
681 int
disk_declare_non_enumerated(topo_mod_t * mod,tnode_t * parent,tnode_t ** childp)682 disk_declare_non_enumerated(topo_mod_t *mod, tnode_t *parent, tnode_t **childp)
683 {
684 return (disk_declare(mod, parent, NULL, childp));
685 }
686
687 /* di_devlink callback for dev_di_node_add */
688 static int
disk_devlink_callback(di_devlink_t dl,void * arg)689 disk_devlink_callback(di_devlink_t dl, void *arg)
690 {
691 disk_cbdata_t *cbp = (disk_cbdata_t *)arg;
692 topo_mod_t *mod = cbp->dcb_mod;
693 dev_di_node_t *dnode = cbp->dcb_dnode;
694 const char *devpath;
695 char *ctds, *slice;
696
697 devpath = di_devlink_path(dl);
698 if ((dnode == NULL) || (devpath == NULL))
699 return (DI_WALK_TERMINATE);
700
701 /* trim the slice off the public name */
702 if (((ctds = strrchr(devpath, '/')) != NULL) &&
703 ((slice = strchr(ctds, 's')) != NULL))
704 *slice = '\0';
705
706 /* Establish the public /dev name (no slice) */
707 dnode->ddn_lpath = topo_mod_strdup(mod, ctds ? ctds + 1 : devpath);
708
709 if (ctds && slice)
710 *slice = 's';
711 return (DI_WALK_TERMINATE);
712 }
713
714 static void
dev_di_node_free(topo_mod_t * mod,dev_di_node_t * dnode)715 dev_di_node_free(topo_mod_t *mod, dev_di_node_t *dnode)
716 {
717 int i;
718
719 /* free the stuff we point to */
720 if (dnode->ddn_devid)
721 topo_mod_strfree(mod, dnode->ddn_devid);
722 for (i = 0; i < dnode->ddn_ppath_count; i++) {
723 /* topo_mod_strfree does NULL checking. */
724 topo_mod_strfree(mod, dnode->ddn_ppath[i]);
725 topo_mod_strfree(mod, dnode->ddn_target_port[i]);
726 topo_mod_strfree(mod, dnode->ddn_attached_port[i]);
727 topo_mod_strfree(mod, dnode->ddn_bridge_port[i]);
728 }
729 topo_mod_free(mod, dnode->ddn_ppath,
730 dnode->ddn_ppath_count * sizeof (char *));
731 topo_mod_free(mod, dnode->ddn_target_port,
732 dnode->ddn_ppath_count * sizeof (char *));
733 topo_mod_free(mod, dnode->ddn_attached_port,
734 dnode->ddn_ppath_count * sizeof (char *));
735 topo_mod_free(mod, dnode->ddn_bridge_port,
736 dnode->ddn_ppath_count * sizeof (char *));
737 topo_mod_strfree(mod, dnode->ddn_dpath);
738 topo_mod_strfree(mod, dnode->ddn_lpath);
739
740 topo_mod_strfree(mod, dnode->ddn_mfg);
741 topo_mod_strfree(mod, dnode->ddn_model);
742 topo_mod_strfree(mod, dnode->ddn_serial);
743 topo_mod_strfree(mod, dnode->ddn_firm);
744 topo_mod_strfree(mod, dnode->ddn_cap);
745
746 /* free self */
747 topo_mod_free(mod, dnode, sizeof (dev_di_node_t));
748 }
749
750 static int
dev_di_node_add(di_node_t node,char * devid,disk_cbdata_t * cbp)751 dev_di_node_add(di_node_t node, char *devid, disk_cbdata_t *cbp)
752 {
753 topo_mod_t *mod = cbp->dcb_mod;
754 dev_di_node_t *dnode;
755 di_path_t pnode;
756 char *path;
757 int mlen;
758 char *minorpath;
759 char *extn = ":a";
760 char *s;
761 int64_t *nblocksp;
762 uint64_t nblocks;
763 int *blksizep;
764 uint_t blksize;
765 char lentry[MAXPATHLEN];
766 int pathcount;
767 int *inq_dtype, itype;
768 int i;
769
770 if (devid) {
771 /*
772 * Check for list duplicate using devid search.
773 * Note if there is no devid, then we can end up with duplicates
774 * in the list, but this doesn't do any harm.
775 */
776 for (dnode = topo_list_next(cbp->dcb_list);
777 dnode != NULL; dnode = topo_list_next(dnode)) {
778 if (dnode->ddn_devid &&
779 devid_str_compare(dnode->ddn_devid, devid) == 0) {
780 topo_mod_dprintf(mod, "dev_di_node_add: "
781 "already there %s\n", devid);
782 return (0);
783 }
784 }
785 }
786
787 if ((dnode = topo_mod_zalloc(mod, sizeof (dev_di_node_t))) == NULL)
788 return (-1);
789
790 if (devid) {
791 /* Establish the devid. */
792 dnode->ddn_devid = topo_mod_strdup(mod, devid);
793 if (dnode->ddn_devid == NULL)
794 goto error;
795 }
796
797 /* Establish the devinfo dpath */
798 if ((path = di_devfs_path(node)) == NULL) {
799 (void) topo_mod_seterrno(mod, errno);
800 goto error;
801 }
802
803 dnode->ddn_dpath = topo_mod_strdup(mod, path);
804 di_devfs_path_free(path);
805 if (dnode->ddn_dpath == NULL)
806 goto error;
807
808 /*
809 * Establish the physical ppath and target ports. If the device is
810 * non-mpxio then dpath and ppath are the same, and the target port is a
811 * property of the device node.
812 *
813 * If dpath is a client node under scsi_vhci, then iterate over all
814 * paths and get their physical paths and target port properrties.
815 * di_path_client_next_path call below will
816 * return non-NULL, and ppath is set to the physical path to the first
817 * pathinfo node.
818 *
819 * NOTE: It is possible to get a generic.vs.non-generic path
820 * for di_devfs_path.vs.di_path_devfs_path like:
821 * xml: /pci@7b,0/pci1022,7458@11/pci1000,3060@2/sd@2,0
822 * pnode: /pci@7b,0/pci1022,7458@11/pci1000,3060@2/disk@2,0
823 * To resolve this issue disk_declare_path() needs to use the
824 * special di_devfs_path_match() interface.
825 */
826 pathcount = 0;
827 pnode = NULL;
828 while ((pnode = di_path_client_next_path(node, pnode)) != NULL) {
829 pathcount++;
830 }
831
832 if (pathcount == 0) {
833 if ((dnode->ddn_ppath =
834 topo_mod_zalloc(mod, sizeof (char *))) == NULL)
835 goto error;
836
837 dnode->ddn_ppath_count = 1;
838 if ((dnode->ddn_ppath[0] = topo_mod_strdup(mod,
839 dnode->ddn_dpath)) == NULL)
840 goto error;
841
842 if ((dnode->ddn_target_port = topo_mod_zalloc(mod,
843 sizeof (char *))) == NULL)
844 goto error;
845
846 if ((dnode->ddn_attached_port = topo_mod_zalloc(mod,
847 sizeof (char *))) == NULL)
848 goto error;
849
850 if ((dnode->ddn_bridge_port = topo_mod_zalloc(mod,
851 sizeof (char *))) == NULL)
852 goto error;
853
854 /* There should be only one target port for a devinfo node. */
855 if ((di_prop_lookup_strings(DDI_DEV_T_ANY, node,
856 SCSI_ADDR_PROP_TARGET_PORT, &s)) == 1) {
857 if ((dnode->ddn_target_port[0] =
858 topo_mod_strdup(mod,
859 scsi_wwnstr_skip_ua_prefix(s))) ==
860 NULL)
861 goto error;
862 }
863
864 if ((di_prop_lookup_strings(DDI_DEV_T_ANY, node,
865 SCSI_ADDR_PROP_ATTACHED_PORT, &s)) == 1) {
866 /* There should be one attached port if any. */
867 if ((dnode->ddn_attached_port[0] =
868 topo_mod_strdup(mod,
869 scsi_wwnstr_skip_ua_prefix(s))) ==
870 NULL)
871 goto error;
872 }
873
874 if ((di_prop_lookup_strings(DDI_DEV_T_ANY, node,
875 SCSI_ADDR_PROP_BRIDGE_PORT, &s)) == 1) {
876 /* There should be one bridge port if any. */
877 if ((dnode->ddn_bridge_port[0] =
878 topo_mod_strdup(mod,
879 scsi_wwnstr_skip_ua_prefix(s))) ==
880 NULL)
881 goto error;
882 }
883
884 } else {
885 /* processing a scsi_vhci device. */
886 if ((dnode->ddn_ppath = topo_mod_zalloc(mod,
887 pathcount * sizeof (char *))) == NULL)
888 goto error;
889
890 dnode->ddn_ppath_count = pathcount;
891
892 if ((dnode->ddn_target_port = topo_mod_zalloc(mod,
893 pathcount * sizeof (char *))) == NULL)
894 goto error;
895
896 if ((dnode->ddn_attached_port = topo_mod_zalloc(mod,
897 pathcount * sizeof (char *))) == NULL)
898 goto error;
899
900 if ((dnode->ddn_bridge_port = topo_mod_zalloc(mod,
901 pathcount * sizeof (char *))) == NULL)
902 goto error;
903
904 pnode = NULL;
905 pathcount = 0;
906 while ((pnode = di_path_client_next_path(node,
907 pnode)) != NULL) {
908 if ((path = di_path_devfs_path(pnode)) == NULL) {
909 (void) topo_mod_seterrno(mod, errno);
910 goto error;
911 }
912
913 dnode->ddn_ppath[pathcount] =
914 topo_mod_strdup(mod, path);
915 di_devfs_path_free(path);
916 if (dnode->ddn_ppath[pathcount] == NULL)
917 goto error;
918
919 if ((di_path_prop_lookup_strings(pnode,
920 SCSI_ADDR_PROP_TARGET_PORT, &s)) == 1) {
921 if ((dnode->ddn_target_port[pathcount] =
922 topo_mod_strdup(mod,
923 scsi_wwnstr_skip_ua_prefix(s))) ==
924 NULL)
925 goto error;
926 }
927
928 if ((di_path_prop_lookup_strings(pnode,
929 SCSI_ADDR_PROP_ATTACHED_PORT, &s)) == 1) {
930 if ((dnode->ddn_attached_port[pathcount] =
931 topo_mod_strdup(mod,
932 scsi_wwnstr_skip_ua_prefix(s))) ==
933 NULL)
934 goto error;
935 }
936
937 if ((di_path_prop_lookup_strings(pnode,
938 SCSI_ADDR_PROP_BRIDGE_PORT, &s)) == 1) {
939 if ((dnode->ddn_bridge_port[pathcount] =
940 topo_mod_strdup(mod,
941 scsi_wwnstr_skip_ua_prefix(s))) ==
942 NULL)
943 goto error;
944 }
945
946 pathcount++;
947 }
948 }
949
950 /*
951 * Find the public /dev name for a disk by adding a minor name and using
952 * di_devlink interface for reverse translation (use devinfo path).
953 */
954 if (di_prop_lookup_ints(DDI_DEV_T_ANY, node, "inquiry-device-type",
955 &inq_dtype) > 0) {
956 dnode->ddn_dtype = *inq_dtype;
957 itype = (*inq_dtype) & DTYPE_MASK;
958 if (itype == DTYPE_DIRECT) {
959 mlen = strlen(dnode->ddn_dpath) + strlen(extn) + 1;
960 if ((minorpath = topo_mod_alloc(mod, mlen)) == NULL)
961 goto error;
962 (void) snprintf(minorpath, mlen, "%s%s",
963 dnode->ddn_dpath, extn);
964 cbp->dcb_dnode = dnode;
965 (void) di_devlink_walk(cbp->dcb_devhdl, "^dsk/",
966 minorpath, DI_PRIMARY_LINK, cbp,
967 disk_devlink_callback);
968 topo_mod_free(mod, minorpath, mlen);
969 if (dnode->ddn_lpath == NULL) {
970 topo_mod_dprintf(mod, "dev_di_node_add: "
971 "failed to determine logical path");
972 }
973 }
974 } else {
975 dnode->ddn_dtype = DTYPE_UNKNOWN;
976 }
977
978 /* cache various bits of optional information about the device. */
979 if (di_prop_lookup_strings(DDI_DEV_T_ANY, node,
980 INQUIRY_VENDOR_ID, &s) > 0) {
981 if ((dnode->ddn_mfg = disk_trim_whitespace(mod, s)) == NULL)
982 goto error;
983 }
984 if (di_prop_lookup_strings(DDI_DEV_T_ANY, node,
985 INQUIRY_PRODUCT_ID, &s) > 0) {
986 if ((dnode->ddn_model = disk_trim_whitespace(mod, s)) == NULL)
987 goto error;
988 }
989 if (di_prop_lookup_strings(DDI_DEV_T_ANY, node,
990 INQUIRY_REVISION_ID, &s) > 0) {
991 if ((dnode->ddn_firm = disk_trim_whitespace(mod, s)) == NULL)
992 goto error;
993 }
994 if (di_prop_lookup_strings(DDI_DEV_T_ANY, node,
995 INQUIRY_SERIAL_NO, &s) > 0) {
996 if ((dnode->ddn_serial = disk_trim_whitespace(mod, s)) == NULL)
997 goto error;
998 } else {
999 /*
1000 * Many USB disk devices don't emulate serial inquiry number
1001 * because their serial number can be longer than the standard
1002 * SCSI length. If we didn't get an inquiry serial number, fill
1003 * one in this way.
1004 */
1005 di_node_t parent;
1006
1007 if ((parent = di_parent_node(node)) != DI_NODE_NIL &&
1008 di_prop_lookup_strings(DDI_DEV_T_ANY, parent,
1009 "usb-serialno", &s) > 0) {
1010 if ((dnode->ddn_serial = disk_trim_whitespace(mod,
1011 s)) == NULL) {
1012 goto error;
1013 }
1014 }
1015 }
1016
1017 if (di_prop_lookup_int64(DDI_DEV_T_ANY, node,
1018 "device-nblocks", &nblocksp) > 0) {
1019 nblocks = (uint64_t)*nblocksp;
1020 /*
1021 * To save kernel memory, the driver may not define
1022 * "device-blksize" when its value is default DEV_BSIZE.
1023 */
1024 if (di_prop_lookup_ints(DDI_DEV_T_ANY, node,
1025 "device-blksize", &blksizep) > 0)
1026 blksize = (uint_t)*blksizep;
1027 else
1028 blksize = DEV_BSIZE; /* default value */
1029 (void) snprintf(lentry, sizeof (lentry),
1030 "%" PRIu64, nblocks * blksize);
1031 if ((dnode->ddn_cap = topo_mod_strdup(mod, lentry)) == NULL)
1032 goto error;
1033 }
1034
1035 topo_mod_dprintf(mod, "dev_di_node_add: "
1036 "adding %s\n", devid ? dnode->ddn_devid : "NULL devid");
1037 topo_mod_dprintf(mod, " "
1038 " %s\n", dnode->ddn_dpath);
1039 for (i = 0; i < dnode->ddn_ppath_count; i++) {
1040 topo_mod_dprintf(mod, " "
1041 " %s\n", dnode->ddn_ppath[i]);
1042 }
1043 topo_list_append(cbp->dcb_list, dnode);
1044 return (0);
1045
1046 error:
1047 dev_di_node_free(mod, dnode);
1048 return (-1);
1049 }
1050
1051 /* di_walk_node callback for disk_list_gather */
1052 static int
dev_walk_di_nodes(di_node_t node,void * arg)1053 dev_walk_di_nodes(di_node_t node, void *arg)
1054 {
1055 char *devidstr = NULL;
1056 char *s;
1057 int *val;
1058
1059 /*
1060 * If it's not a scsi_vhci client and doesn't have a target_port
1061 * property and doesn't have a target property then it's not a storage
1062 * device and we're not interested.
1063 */
1064 if (di_path_client_next_path(node, NULL) == NULL &&
1065 di_prop_lookup_strings(DDI_DEV_T_ANY, node,
1066 SCSI_ADDR_PROP_TARGET_PORT, &s) <= 0 &&
1067 di_prop_lookup_ints(DDI_DEV_T_ANY, node,
1068 SCSI_ADDR_PROP_TARGET, &val) <= 0) {
1069 return (DI_WALK_CONTINUE);
1070 }
1071 (void) di_prop_lookup_strings(DDI_DEV_T_ANY, node,
1072 DEVID_PROP_NAME, &devidstr);
1073
1074 /* create/find the devid scsi topology node */
1075 (void) dev_di_node_add(node, devidstr, arg);
1076
1077 return (DI_WALK_CONTINUE);
1078 }
1079
1080 int
dev_list_gather(topo_mod_t * mod,topo_list_t * listp)1081 dev_list_gather(topo_mod_t *mod, topo_list_t *listp)
1082 {
1083 di_node_t devtree;
1084 di_devlink_handle_t devhdl;
1085 disk_cbdata_t dcb;
1086
1087 if ((devtree = topo_mod_devinfo(mod)) == DI_NODE_NIL) {
1088 topo_mod_dprintf(mod, "disk_list_gather: "
1089 "topo_mod_devinfo() failed");
1090 return (-1);
1091 }
1092
1093 if ((devhdl = di_devlink_init(NULL, 0)) == DI_NODE_NIL) {
1094 topo_mod_dprintf(mod, "disk_list_gather: "
1095 "di_devlink_init() failed");
1096 return (-1);
1097 }
1098
1099 dcb.dcb_mod = mod;
1100 dcb.dcb_list = listp;
1101 dcb.dcb_devhdl = devhdl;
1102
1103 /* walk the devinfo snapshot looking for disk nodes */
1104 (void) di_walk_node(devtree, DI_WALK_CLDFIRST, &dcb,
1105 dev_walk_di_nodes);
1106
1107 (void) di_devlink_fini(&devhdl);
1108
1109 return (0);
1110 }
1111
1112 void
dev_list_free(topo_mod_t * mod,topo_list_t * listp)1113 dev_list_free(topo_mod_t *mod, topo_list_t *listp)
1114 {
1115 dev_di_node_t *dnode;
1116
1117 while ((dnode = topo_list_next(listp)) != NULL) {
1118 /* order of delete/free is important */
1119 topo_list_delete(listp, dnode);
1120 dev_di_node_free(mod, dnode);
1121 }
1122 }
1123
1124 /*
1125 * Query the current disk status. If successful, the disk status is returned
1126 * as an nvlist consisting of at least the following members:
1127 *
1128 * protocol string Supported protocol (currently "scsi")
1129 *
1130 * status nvlist Arbitrary protocol-specific information
1131 * about the current state of the disk.
1132 *
1133 * faults nvlist A list of supported faults. Each
1134 * element of this list is a boolean value.
1135 * An element's existence indicates that
1136 * the drive supports detecting this fault,
1137 * and the value indicates the current
1138 * state of the fault.
1139 *
1140 * <fault-name> nvlist For each fault named in 'faults', a
1141 * nvlist describing protocol-specific
1142 * attributes of the fault.
1143 *
1144 * This method relies on the libdiskstatus library to query this information.
1145 */
1146 static int
disk_status(topo_mod_t * mod,tnode_t * nodep,topo_version_t vers,nvlist_t * in_nvl,nvlist_t ** out_nvl)1147 disk_status(topo_mod_t *mod, tnode_t *nodep, topo_version_t vers,
1148 nvlist_t *in_nvl, nvlist_t **out_nvl)
1149 {
1150 disk_status_t *dsp;
1151 char *devpath, *fullpath;
1152 size_t pathlen;
1153 nvlist_t *status;
1154 int err;
1155
1156 *out_nvl = NULL;
1157
1158 if (vers != TOPO_METH_DISK_STATUS_VERSION)
1159 return (topo_mod_seterrno(mod, EMOD_VER_NEW));
1160
1161 /*
1162 * If the caller specifies the "path" parameter, then this indicates
1163 * that we should use this instead of deriving it from the topo node
1164 * itself.
1165 */
1166 if (nvlist_lookup_string(in_nvl, "path", &fullpath) == 0) {
1167 devpath = NULL;
1168 pathlen = 0;
1169 } else {
1170 /*
1171 * Get the /devices path and attempt to open the disk status
1172 * handle.
1173 */
1174 if (topo_prop_get_string(nodep, TOPO_PGROUP_IO,
1175 TOPO_IO_DEV_PATH, &devpath, &err) != 0)
1176 return (topo_mod_seterrno(mod, EMOD_METHOD_NOTSUP));
1177
1178 /*
1179 * Note that sizeof(string) includes the terminating NULL byte
1180 */
1181 pathlen = strlen(devpath) + sizeof ("/devices") +
1182 sizeof (PHYS_EXTN) - 1;
1183
1184 if ((fullpath = topo_mod_alloc(mod, pathlen)) == NULL)
1185 return (topo_mod_seterrno(mod, EMOD_NOMEM));
1186
1187 (void) snprintf(fullpath, pathlen, "/devices%s%s", devpath,
1188 PHYS_EXTN);
1189
1190 topo_mod_strfree(mod, devpath);
1191 }
1192
1193 if ((dsp = disk_status_open(fullpath, &err)) == NULL) {
1194 if (devpath)
1195 topo_mod_free(mod, fullpath, pathlen);
1196 return (topo_mod_seterrno(mod, err == EDS_NOMEM ?
1197 EMOD_NOMEM : EMOD_METHOD_NOTSUP));
1198 }
1199
1200 if (devpath)
1201 topo_mod_free(mod, fullpath, pathlen);
1202
1203 if ((status = disk_status_get(dsp)) == NULL) {
1204 err = (disk_status_errno(dsp) == EDS_NOMEM ?
1205 EMOD_NOMEM : EMOD_METHOD_NOTSUP);
1206 disk_status_close(dsp);
1207 return (topo_mod_seterrno(mod, err));
1208 }
1209
1210 *out_nvl = status;
1211 disk_status_close(dsp);
1212 return (0);
1213 }
1214