xref: /titanic_51/usr/src/cmd/devfsadm/misc_link.c (revision 45e662eb8429b38c18931ebeed30f2e5287ae51b) 
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  * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
23  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
24  */
25 
26 #include <regex.h>
27 #include <devfsadm.h>
28 #include <stdio.h>
29 #include <strings.h>
30 #include <stdlib.h>
31 #include <limits.h>
32 #include <sys/zone.h>
33 #include <sys/zcons.h>
34 #include <sys/cpuid_drv.h>
35 
36 static int display(di_minor_t minor, di_node_t node);
37 static int parallel(di_minor_t minor, di_node_t node);
38 static int node_slash_minor(di_minor_t minor, di_node_t node);
39 static int driver_minor(di_minor_t minor, di_node_t node);
40 static int node_name(di_minor_t minor, di_node_t node);
41 static int minor_name(di_minor_t minor, di_node_t node);
42 static int wifi_minor_name(di_minor_t minor, di_node_t node);
43 static int conskbd(di_minor_t minor, di_node_t node);
44 static int consms(di_minor_t minor, di_node_t node);
45 static int power_button(di_minor_t minor, di_node_t node);
46 static int fc_port(di_minor_t minor, di_node_t node);
47 static int printer_create(di_minor_t minor, di_node_t node);
48 static int se_hdlc_create(di_minor_t minor, di_node_t node);
49 static int ppm(di_minor_t minor, di_node_t node);
50 static int gpio(di_minor_t minor, di_node_t node);
51 static int av_create(di_minor_t minor, di_node_t node);
52 static int tsalarm_create(di_minor_t minor, di_node_t node);
53 static int ntwdt_create(di_minor_t minor, di_node_t node);
54 static int zcons_create(di_minor_t minor, di_node_t node);
55 static int cpuid(di_minor_t minor, di_node_t node);
56 static int glvc(di_minor_t minor, di_node_t node);
57 static int ses_callback(di_minor_t minor, di_node_t node);
58 static int kmdrv_create(di_minor_t minor, di_node_t node);
59 
60 static devfsadm_create_t misc_cbt[] = {
61 	{ "pseudo", "ddi_pseudo", "(^sad$)",
62 	    TYPE_EXACT | DRV_RE, ILEVEL_0, node_slash_minor
63 	},
64 	{ "pseudo", "ddi_pseudo", "zsh",
65 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, driver_minor
66 	},
67 	{ "network", "ddi_network", NULL,
68 	    TYPE_EXACT, ILEVEL_0, minor_name
69 	},
70 	{ "wifi", "ddi_network:wifi", NULL,
71 	    TYPE_EXACT, ILEVEL_0, wifi_minor_name
72 	},
73 	{ "display", "ddi_display", NULL,
74 	    TYPE_EXACT, ILEVEL_0, display
75 	},
76 	{ "parallel", "ddi_parallel", NULL,
77 	    TYPE_EXACT, ILEVEL_0, parallel
78 	},
79 	{ "enclosure", DDI_NT_SCSI_ENCLOSURE, NULL,
80 	    TYPE_EXACT, ILEVEL_0, ses_callback
81 	},
82 	{ "pseudo", "ddi_pseudo", "(^winlock$)|(^pm$)",
83 	    TYPE_EXACT | DRV_RE, ILEVEL_0, node_name
84 	},
85 	{ "pseudo", "ddi_pseudo", "conskbd",
86 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, conskbd
87 	},
88 	{ "pseudo", "ddi_pseudo", "consms",
89 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, consms
90 	},
91 	{ "pseudo", "ddi_pseudo", "rsm",
92 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, minor_name
93 	},
94 	{ "pseudo", "ddi_pseudo",
95 	    "(^lockstat$)|(^SUNW,rtvc$)|(^vol$)|(^log$)|(^sy$)|"
96 	    "(^ksyms$)|(^clone$)|(^tl$)|(^tnf$)|(^kstat$)|(^mdesc$)|(^eeprom$)|"
97 	    "(^ptsl$)|(^mm$)|(^wc$)|(^dump$)|(^cn$)|(^svvslo$)|(^ptm$)|"
98 	    "(^ptc$)|(^openeepr$)|(^poll$)|(^sysmsg$)|(^random$)|(^trapstat$)|"
99 	    "(^cryptoadm$)|(^crypto$)|(^pool$)|(^poolctl$)|(^bl$)|(^kmdb$)|"
100 	    "(^sysevent$)|(^kssl$)|(^physmem$)",
101 	    TYPE_EXACT | DRV_RE, ILEVEL_1, minor_name
102 	},
103 	{ "pseudo", "ddi_pseudo",
104 	    "(^ip$)|(^tcp$)|(^udp$)|(^icmp$)|"
105 	    "(^ip6$)|(^tcp6$)|(^udp6$)|(^icmp6$)|"
106 	    "(^rts$)|(^arp$)|(^ipsecah$)|(^ipsecesp$)|(^keysock$)|(^spdsock$)|"
107 	    "(^nca$)|(^rds$)|(^sdp$)|(^ipnet$)|(^dlpistub$)|(^bpf$)",
108 	    TYPE_EXACT | DRV_RE, ILEVEL_1, minor_name
109 	},
110 	{ "pseudo", "ddi_pseudo",
111 	    "(^ipf$)|(^ipnat$)|(^ipstate$)|(^ipauth$)|"
112 	    "(^ipsync$)|(^ipscan$)|(^iplookup$)",
113 	    TYPE_EXACT | DRV_RE, ILEVEL_0, minor_name,
114 	},
115 	{ "pseudo", "ddi_pseudo", "dld",
116 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, node_name
117 	},
118 	{ "pseudo", "ddi_pseudo",
119 	    "(^kdmouse$)|(^rootprop$)",
120 	    TYPE_EXACT | DRV_RE, ILEVEL_0, node_name
121 	},
122 	{ "pseudo", "ddi_pseudo", "tod",
123 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, node_name
124 	},
125 	{ "pseudo", "ddi_pseudo", "envctrl(two)?",
126 	    TYPE_EXACT | DRV_RE, ILEVEL_1, minor_name,
127 	},
128 	{ "pseudo", "ddi_pseudo", "fcode",
129 	    TYPE_EXACT | DRV_RE, ILEVEL_0, minor_name,
130 	},
131 	{ "power_button", "ddi_power_button", NULL,
132 	    TYPE_EXACT, ILEVEL_0, power_button,
133 	},
134 	{ "FC port", "ddi_ctl:devctl", "fp",
135 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, fc_port
136 	},
137 	{ "printer", "ddi_printer", NULL,
138 	    TYPE_EXACT, ILEVEL_0, printer_create
139 	},
140 	{ "pseudo", "ddi_pseudo", "se",
141 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, se_hdlc_create
142 	},
143 	{ "ppm",  "ddi_ppm", NULL,
144 	    TYPE_EXACT, ILEVEL_0, ppm
145 	},
146 	{ "pseudo", "ddi_pseudo", "gpio_87317",
147 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, gpio
148 	},
149 	{ "pseudo", "ddi_pseudo", "sckmdrv",
150 	    TYPE_EXACT | DRV_RE, ILEVEL_0, kmdrv_create,
151 	},
152 	{ "pseudo", "ddi_pseudo", "oplkmdrv",
153 	    TYPE_EXACT | DRV_RE, ILEVEL_0, kmdrv_create,
154 	},
155 	{ "av", "^ddi_av:(isoch|async)$", NULL,
156 	    TYPE_RE, ILEVEL_0, av_create,
157 	},
158 	{ "pseudo", "ddi_pseudo", "tsalarm",
159 	    TYPE_EXACT | DRV_RE, ILEVEL_0, tsalarm_create,
160 	},
161 	{ "pseudo", "ddi_pseudo", "ntwdt",
162 	    TYPE_EXACT | DRV_RE, ILEVEL_0, ntwdt_create,
163 	},
164 	{ "pseudo", "ddi_pseudo", "daplt",
165 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, minor_name
166 	},
167 	{ "pseudo", "ddi_pseudo", "zcons",
168 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, zcons_create,
169 	},
170 	{ "pseudo", "ddi_pseudo", CPUID_DRIVER_NAME,
171 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, cpuid,
172 	},
173 	{ "pseudo", "ddi_pseudo", "glvc",
174 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, glvc,
175 	},
176 	{ "pseudo", "ddi_pseudo", "dm2s",
177 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, minor_name,
178 	},
179 	{ "pseudo", "ddi_pseudo", "nsmb",
180 	    TYPE_EXACT | DRV_EXACT, ILEVEL_1, minor_name,
181 	},
182 	{ "pseudo", "ddi_pseudo", "mem_cache",
183 	    TYPE_EXACT | DRV_RE, ILEVEL_1, minor_name,
184 	},
185 	{ "pseudo", "ddi_pseudo", "fm",
186 	    TYPE_EXACT | DRV_RE, ILEVEL_1, minor_name,
187 	},
188 	{ "pseudo", "ddi_pseudo", "smbsrv",
189 	    TYPE_EXACT | DRV_EXACT, ILEVEL_1, minor_name,
190 	},
191 	{ "pseudo", "ddi_pseudo", "tpm",
192 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, minor_name
193 	},
194 };
195 
196 DEVFSADM_CREATE_INIT_V0(misc_cbt);
197 
198 static devfsadm_remove_t misc_remove_cbt[] = {
199 	{ "pseudo", "^profile$",
200 	    RM_PRE | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
201 	},
202 	{ "pseudo", "^rsm$",
203 	    RM_PRE | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
204 	},
205 	{ "printer", "^printers/[0-9]+$",
206 	    RM_PRE | RM_HOT | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
207 	},
208 	{ "av", "^av/[0-9]+/(async|isoch)$",
209 	    RM_PRE | RM_HOT | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
210 	},
211 	{ "pseudo", "^daplt$",
212 	    RM_PRE | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
213 	},
214 	{ "pseudo", "^zcons/" ZONENAME_REGEXP "/(" ZCONS_MASTER_NAME "|"
215 		ZCONS_SLAVE_NAME ")$",
216 	    RM_PRE | RM_HOT | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
217 	},
218 	{ "pseudo", "^" CPUID_SELF_NAME "$", RM_ALWAYS | RM_PRE | RM_HOT,
219 	    ILEVEL_0, devfsadm_rm_all
220 	},
221 	{ "enclosure", "^es/ses[0-9]+$", RM_POST,
222 		ILEVEL_0, devfsadm_rm_all
223 	},
224 	{ "pseudo", "^pfil$",
225 	    RM_PRE | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
226 	},
227 	{ "pseudo", "^tpm$",
228 	    RM_PRE | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
229 	},
230 	{ "pseudo", "^sctp|sctp6$",
231 	    RM_PRE | RM_ALWAYS, ILEVEL_0, devfsadm_rm_link
232 	}
233 };
234 
235 /* Rules for gpio devices */
236 static devfsadm_enumerate_t gpio_rules[1] =
237 	{"^gpio([0-9]+)$", 1, MATCH_ALL};
238 
239 DEVFSADM_REMOVE_INIT_V0(misc_remove_cbt);
240 
241 /*
242  * Handles minor node type "ddi_display".
243  *
244  * type=ddi_display fbs/\M0 fb\N0
245  */
246 static int
247 display(di_minor_t minor, di_node_t node)
248 {
249 	char l_path[PATH_MAX + 1], contents[PATH_MAX + 1], *buf;
250 	devfsadm_enumerate_t rules[1] = {"^fb([0-9]+)$", 1, MATCH_ALL};
251 	char *mn = di_minor_name(minor);
252 
253 	/* create fbs/\M0 primary link */
254 	(void) strcpy(l_path, "fbs/");
255 	(void) strcat(l_path, mn);
256 	(void) devfsadm_mklink(l_path, node, minor, 0);
257 
258 	/* create fb\N0 which links to fbs/\M0 */
259 	if (devfsadm_enumerate_int(l_path, 0, &buf, rules, 1)) {
260 		return (DEVFSADM_CONTINUE);
261 	}
262 	(void) strcpy(contents, l_path);
263 	(void) strcpy(l_path, "fb");
264 	(void) strcat(l_path, buf);
265 	free(buf);
266 	(void) devfsadm_secondary_link(l_path, contents, 0);
267 	return (DEVFSADM_CONTINUE);
268 }
269 
270 /*
271  * Handles minor node type "ddi_parallel".
272  * type=ddi_parallel;name=mcpp     mcpp\N0
273  */
274 static int
275 parallel(di_minor_t minor, di_node_t node)
276 {
277 	char path[PATH_MAX + 1], *buf;
278 	devfsadm_enumerate_t rules[1] = {"mcpp([0-9]+)$", 1, MATCH_ALL};
279 
280 
281 	if (strcmp(di_node_name(node), "mcpp") != 0) {
282 		return (DEVFSADM_CONTINUE);
283 	}
284 
285 	if (NULL == (buf = di_devfs_path(node))) {
286 		return (DEVFSADM_CONTINUE);
287 	}
288 
289 	(void) snprintf(path, sizeof (path), "%s:%s",
290 	    buf, di_minor_name(minor));
291 
292 	di_devfs_path_free(buf);
293 
294 	if (devfsadm_enumerate_int(path, 0, &buf, rules, 1)) {
295 		return (DEVFSADM_CONTINUE);
296 	}
297 	(void) snprintf(path, sizeof (path), "mcpp%s", buf);
298 	free(buf);
299 
300 	(void) devfsadm_mklink(path, node, minor, 0);
301 	return (DEVFSADM_CONTINUE);
302 }
303 
304 static int
305 ses_callback(di_minor_t minor, di_node_t node)
306 {
307 	char l_path[PATH_MAX];
308 	char *buf;
309 	char *devfspath;
310 	char p_path[PATH_MAX];
311 	devfsadm_enumerate_t re[] = {"^es$/^ses([0-9]+)$", 1, MATCH_ALL};
312 
313 	/* find devices path -- need to free mem */
314 	if (NULL == (devfspath = di_devfs_path(node))) {
315 		return (DEVFSADM_CONTINUE);
316 	}
317 
318 	(void) snprintf(p_path, sizeof (p_path), "%s:%s", devfspath,
319 	    di_minor_name(minor));
320 
321 
322 	/* find next number to use; buf is an ascii number */
323 	if (devfsadm_enumerate_int(p_path, 0, &buf, re, 1)) {
324 		/* free memory */
325 		di_devfs_path_free(devfspath);
326 		return (DEVFSADM_CONTINUE);
327 	}
328 
329 	(void) snprintf(l_path, sizeof (l_path), "es/ses%s", buf);
330 
331 	(void) devfsadm_mklink(l_path, node, minor, 0);
332 	/* free memory */
333 	free(buf);
334 	di_devfs_path_free(devfspath);
335 	return (DEVFSADM_CONTINUE);
336 
337 }
338 
339 static int
340 node_slash_minor(di_minor_t minor, di_node_t node)
341 {
342 
343 	char path[PATH_MAX + 1];
344 
345 	(void) strcpy(path, di_node_name(node));
346 	(void) strcat(path, "/");
347 	(void) strcat(path, di_minor_name(minor));
348 	(void) devfsadm_mklink(path, node, minor, 0);
349 	return (DEVFSADM_CONTINUE);
350 }
351 
352 static int
353 driver_minor(di_minor_t minor, di_node_t node)
354 {
355 	char path[PATH_MAX + 1];
356 
357 	(void) strcpy(path, di_driver_name(node));
358 	(void) strcat(path, di_minor_name(minor));
359 	(void) devfsadm_mklink(path, node, minor, 0);
360 	return (DEVFSADM_CONTINUE);
361 }
362 
363 /*
364  * Handles links of the form:
365  * type=ddi_pseudo;name=xyz  \D
366  */
367 static int
368 node_name(di_minor_t minor, di_node_t node)
369 {
370 	(void) devfsadm_mklink(di_node_name(node), node, minor, 0);
371 	return (DEVFSADM_CONTINUE);
372 }
373 
374 /*
375  * Handles links of the form:
376  * type=ddi_pseudo;name=xyz  \M0
377  */
378 static int
379 minor_name(di_minor_t minor, di_node_t node)
380 {
381 	char *mn = di_minor_name(minor);
382 
383 	(void) devfsadm_mklink(mn, node, minor, 0);
384 	if (strcmp(mn, "icmp") == 0) {
385 		(void) devfsadm_mklink("rawip", node, minor, 0);
386 	}
387 	if (strcmp(mn, "icmp6") == 0) {
388 		(void) devfsadm_mklink("rawip6", node, minor, 0);
389 	}
390 	if (strcmp(mn, "ipf") == 0) {
391 		(void) devfsadm_mklink("ipl", node, minor, 0);
392 	}
393 	return (DEVFSADM_CONTINUE);
394 }
395 
396 /*
397  * create links at /dev/wifi for wifi minor node
398  */
399 static int
400 wifi_minor_name(di_minor_t minor, di_node_t node)
401 {
402 	char buf[256];
403 	char *mn = di_minor_name(minor);
404 
405 	(void) snprintf(buf, sizeof (buf), "%s%s", "wifi/", mn);
406 	(void) devfsadm_mklink(buf, node, minor, 0);
407 
408 	return (DEVFSADM_CONTINUE);
409 }
410 
411 static int
412 conskbd(di_minor_t minor, di_node_t node)
413 {
414 	(void) devfsadm_mklink("kbd", node, minor, 0);
415 	return (DEVFSADM_CONTINUE);
416 }
417 
418 static int
419 consms(di_minor_t minor, di_node_t node)
420 {
421 	(void) devfsadm_mklink("mouse", node, minor, 0);
422 	return (DEVFSADM_CONTINUE);
423 }
424 
425 static int
426 power_button(di_minor_t minor, di_node_t node)
427 {
428 	(void) devfsadm_mklink("power_button", node, minor, 0);
429 	return (DEVFSADM_CONTINUE);
430 }
431 
432 static int
433 fc_port(di_minor_t minor, di_node_t node)
434 {
435 	devfsadm_enumerate_t rules[1] = {"fc/fp([0-9]+)$", 1, MATCH_ALL};
436 	char *buf, path[PATH_MAX + 1];
437 	char *ptr;
438 
439 	if (NULL == (ptr = di_devfs_path(node))) {
440 		return (DEVFSADM_CONTINUE);
441 	}
442 
443 	(void) strcpy(path, ptr);
444 	(void) strcat(path, ":");
445 	(void) strcat(path, di_minor_name(minor));
446 
447 	di_devfs_path_free(ptr);
448 
449 	if (devfsadm_enumerate_int(path, 0, &buf, rules, 1) != 0) {
450 		return (DEVFSADM_CONTINUE);
451 	}
452 
453 	(void) strcpy(path, "fc/fp");
454 	(void) strcat(path, buf);
455 	free(buf);
456 
457 	(void) devfsadm_mklink(path, node, minor, 0);
458 	return (DEVFSADM_CONTINUE);
459 }
460 
461 /*
462  * Handles:
463  *	minor node type "ddi_printer".
464  * 	rules of the form: type=ddi_printer;name=bpp  \M0
465  */
466 static int
467 printer_create(di_minor_t minor, di_node_t node)
468 {
469 	char *mn;
470 	char path[PATH_MAX + 1], *buf;
471 	devfsadm_enumerate_t rules[1] = {"^printers$/^([0-9]+)$", 1, MATCH_ALL};
472 
473 	mn = di_minor_name(minor);
474 
475 	if (strcmp(di_driver_name(node), "bpp") == 0) {
476 		(void) devfsadm_mklink(mn, node, minor, 0);
477 	}
478 
479 	if (NULL == (buf = di_devfs_path(node))) {
480 		return (DEVFSADM_CONTINUE);
481 	}
482 
483 	(void) snprintf(path, sizeof (path), "%s:%s", buf, mn);
484 	di_devfs_path_free(buf);
485 
486 	if (devfsadm_enumerate_int(path, 0, &buf, rules, 1)) {
487 		return (DEVFSADM_CONTINUE);
488 	}
489 
490 	(void) snprintf(path, sizeof (path), "printers/%s", buf);
491 	free(buf);
492 
493 	(void) devfsadm_mklink(path, node, minor, 0);
494 
495 	return (DEVFSADM_CONTINUE);
496 }
497 
498 /*
499  * Handles links of the form:
500  * type=ddi_pseudo;name=se;minor2=hdlc	se_hdlc\N0
501  * type=ddi_pseudo;name=serial;minor2=hdlc	se_hdlc\N0
502  */
503 static int
504 se_hdlc_create(di_minor_t minor, di_node_t node)
505 {
506 	devfsadm_enumerate_t rules[1] = {"^se_hdlc([0-9]+)$", 1, MATCH_ALL};
507 	char *buf, path[PATH_MAX + 1];
508 	char *ptr;
509 	char *mn;
510 
511 	mn = di_minor_name(minor);
512 
513 	/* minor node should be of the form: "?,hdlc" */
514 	if (strcmp(mn + 1, ",hdlc") != 0) {
515 		return (DEVFSADM_CONTINUE);
516 	}
517 
518 	if (NULL == (ptr = di_devfs_path(node))) {
519 		return (DEVFSADM_CONTINUE);
520 	}
521 
522 	(void) strcpy(path, ptr);
523 	(void) strcat(path, ":");
524 	(void) strcat(path, mn);
525 
526 	di_devfs_path_free(ptr);
527 
528 	if (devfsadm_enumerate_int(path, 0, &buf, rules, 1) != 0) {
529 		return (DEVFSADM_CONTINUE);
530 	}
531 
532 	(void) strcpy(path, "se_hdlc");
533 	(void) strcat(path, buf);
534 	free(buf);
535 
536 	(void) devfsadm_mklink(path, node, minor, 0);
537 
538 	return (DEVFSADM_CONTINUE);
539 }
540 
541 static int
542 gpio(di_minor_t minor, di_node_t node)
543 {
544 	char l_path[PATH_MAX], p_path[PATH_MAX], *buf, *devfspath;
545 	char *minor_nm, *drvr_nm;
546 
547 
548 	minor_nm = di_minor_name(minor);
549 	drvr_nm = di_driver_name(node);
550 	if ((minor_nm == NULL) || (drvr_nm == NULL)) {
551 		return (DEVFSADM_CONTINUE);
552 	}
553 
554 	devfspath = di_devfs_path(node);
555 
556 	(void) strcpy(p_path, devfspath);
557 	(void) strcat(p_path, ":");
558 	(void) strcat(p_path, minor_nm);
559 	di_devfs_path_free(devfspath);
560 
561 	/* build the physical path from the components */
562 	if (devfsadm_enumerate_int(p_path, 0, &buf, gpio_rules, 1)) {
563 		return (DEVFSADM_CONTINUE);
564 	}
565 
566 	(void) snprintf(l_path, sizeof (l_path), "%s%s", "gpio", buf);
567 
568 	free(buf);
569 
570 	(void) devfsadm_mklink(l_path, node, minor, 0);
571 
572 	return (DEVFSADM_CONTINUE);
573 }
574 
575 /*
576  * Creates /dev/ppm nodes for Platform Specific PM module
577  */
578 static int
579 ppm(di_minor_t minor, di_node_t node)
580 {
581 	(void) devfsadm_mklink("ppm", node, minor, 0);
582 	return (DEVFSADM_CONTINUE);
583 }
584 
585 /*
586  * Handles:
587  *	/dev/av/[0-9]+/(async|isoch)
588  */
589 static int
590 av_create(di_minor_t minor, di_node_t node)
591 {
592 	devfsadm_enumerate_t rules[1] = {"^av$/^([0-9]+)$", 1, MATCH_ADDR};
593 	char	*minor_str;
594 	char	path[PATH_MAX + 1];
595 	char	*buf;
596 
597 	if ((buf = di_devfs_path(node)) == NULL) {
598 		return (DEVFSADM_CONTINUE);
599 	}
600 
601 	minor_str = di_minor_name(minor);
602 	(void) snprintf(path, sizeof (path), "%s:%s", buf, minor_str);
603 	di_devfs_path_free(buf);
604 
605 	if (devfsadm_enumerate_int(path, 0, &buf, rules, 1)) {
606 		return (DEVFSADM_CONTINUE);
607 	}
608 
609 	(void) snprintf(path, sizeof (path), "av/%s/%s", buf, minor_str);
610 	free(buf);
611 
612 	(void) devfsadm_mklink(path, node, minor, 0);
613 
614 	return (DEVFSADM_CONTINUE);
615 }
616 
617 /*
618  * Creates /dev/lom and /dev/tsalarm:ctl for tsalarm node
619  */
620 static int
621 tsalarm_create(di_minor_t minor, di_node_t node)
622 {
623 	char buf[PATH_MAX + 1];
624 	char *mn = di_minor_name(minor);
625 
626 	(void) snprintf(buf, sizeof (buf), "%s%s", di_node_name(node), ":ctl");
627 
628 	(void) devfsadm_mklink(mn, node, minor, 0);
629 	(void) devfsadm_mklink(buf, node, minor, 0);
630 
631 	return (DEVFSADM_CONTINUE);
632 }
633 
634 /*
635  * Creates /dev/ntwdt for ntwdt node
636  */
637 static int
638 ntwdt_create(di_minor_t minor, di_node_t node)
639 {
640 	(void) devfsadm_mklink("ntwdt", node, minor, 0);
641 	return (DEVFSADM_CONTINUE);
642 }
643 
644 static int
645 zcons_create(di_minor_t minor, di_node_t node)
646 {
647 	char	*minor_str;
648 	char	*zonename;
649 	char	path[MAXPATHLEN];
650 
651 	minor_str = di_minor_name(minor);
652 
653 	if (di_prop_lookup_strings(DDI_DEV_T_ANY, node, "zonename",
654 	    &zonename) == -1) {
655 		return (DEVFSADM_CONTINUE);
656 	}
657 
658 	(void) snprintf(path, sizeof (path), "zcons/%s/%s", zonename,
659 	    minor_str);
660 	(void) devfsadm_mklink(path, node, minor, 0);
661 
662 	return (DEVFSADM_CONTINUE);
663 }
664 
665 /*
666  *	/dev/cpu/self/cpuid 	->	/devices/pseudo/cpuid@0:self
667  */
668 static int
669 cpuid(di_minor_t minor, di_node_t node)
670 {
671 	(void) devfsadm_mklink(CPUID_SELF_NAME, node, minor, 0);
672 	return (DEVFSADM_CONTINUE);
673 }
674 
675 /*
676  * For device
677  *      /dev/spfma -> /devices/virtual-devices/fma@5:glvc
678  */
679 static int
680 glvc(di_minor_t minor, di_node_t node)
681 {
682 	char node_name[MAXNAMELEN + 1];
683 
684 	(void) strcpy(node_name, di_node_name(node));
685 
686 	if (strncmp(node_name, "fma", 3) == 0) {
687 		/* Only one fma channel */
688 		(void) devfsadm_mklink("spfma", node, minor, 0);
689 	}
690 	return (DEVFSADM_CONTINUE);
691 }
692 
693 /*
694  * Handles links of the form:
695  * type=ddi_pseudo;name=sckmdrv		kmdrv\M0
696  * type=ddi_pseudo;name=oplkmdrv	kmdrv\M0
697  */
698 static int
699 kmdrv_create(di_minor_t minor, di_node_t node)
700 {
701 
702 	(void) devfsadm_mklink("kmdrv", node, minor, 0);
703 	return (DEVFSADM_CONTINUE);
704 }
705