xref: /titanic_50/usr/src/cmd/devfsadm/misc_link.c (revision c10c16dec587a0662068f6e2991c29ed3a9db943) 
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  */
24 
25 #include <regex.h>
26 #include <devfsadm.h>
27 #include <stdio.h>
28 #include <strings.h>
29 #include <stdlib.h>
30 #include <limits.h>
31 #include <sys/zone.h>
32 #include <sys/zcons.h>
33 #include <sys/cpuid_drv.h>
34 
35 static int display(di_minor_t minor, di_node_t node);
36 static int parallel(di_minor_t minor, di_node_t node);
37 static int node_slash_minor(di_minor_t minor, di_node_t node);
38 static int driver_minor(di_minor_t minor, di_node_t node);
39 static int node_name(di_minor_t minor, di_node_t node);
40 static int minor_name(di_minor_t minor, di_node_t node);
41 static int wifi_minor_name(di_minor_t minor, di_node_t node);
42 static int conskbd(di_minor_t minor, di_node_t node);
43 static int consms(di_minor_t minor, di_node_t node);
44 static int power_button(di_minor_t minor, di_node_t node);
45 static int fc_port(di_minor_t minor, di_node_t node);
46 static int printer_create(di_minor_t minor, di_node_t node);
47 static int se_hdlc_create(di_minor_t minor, di_node_t node);
48 static int ppm(di_minor_t minor, di_node_t node);
49 static int gpio(di_minor_t minor, di_node_t node);
50 static int av_create(di_minor_t minor, di_node_t node);
51 static int tsalarm_create(di_minor_t minor, di_node_t node);
52 static int ntwdt_create(di_minor_t minor, di_node_t node);
53 static int zcons_create(di_minor_t minor, di_node_t node);
54 static int cpuid(di_minor_t minor, di_node_t node);
55 static int glvc(di_minor_t minor, di_node_t node);
56 static int ses_callback(di_minor_t minor, di_node_t node);
57 static int kmdrv_create(di_minor_t minor, di_node_t node);
58 
59 static devfsadm_create_t misc_cbt[] = {
60 	{ "pseudo", "ddi_pseudo", "(^sad$)",
61 	    TYPE_EXACT | DRV_RE, ILEVEL_0, node_slash_minor
62 	},
63 	{ "pseudo", "ddi_pseudo", "zsh",
64 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, driver_minor
65 	},
66 	{ "network", "ddi_network", NULL,
67 	    TYPE_EXACT, ILEVEL_0, minor_name
68 	},
69 	{ "wifi", "ddi_network:wifi", NULL,
70 	    TYPE_EXACT, ILEVEL_0, wifi_minor_name
71 	},
72 	{ "display", "ddi_display", NULL,
73 	    TYPE_EXACT, ILEVEL_0, display
74 	},
75 	{ "parallel", "ddi_parallel", NULL,
76 	    TYPE_EXACT, ILEVEL_0, parallel
77 	},
78 	{ "enclosure", DDI_NT_SCSI_ENCLOSURE, NULL,
79 	    TYPE_EXACT, ILEVEL_0, ses_callback
80 	},
81 	{ "pseudo", "ddi_pseudo", "(^winlock$)|(^pm$)",
82 	    TYPE_EXACT | DRV_RE, ILEVEL_0, node_name
83 	},
84 	{ "pseudo", "ddi_pseudo", "conskbd",
85 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, conskbd
86 	},
87 	{ "pseudo", "ddi_pseudo", "consms",
88 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, consms
89 	},
90 	{ "pseudo", "ddi_pseudo", "rsm",
91 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, minor_name
92 	},
93 	{ "pseudo", "ddi_pseudo",
94 	    "(^lockstat$)|(^SUNW,rtvc$)|(^vol$)|(^log$)|(^sy$)|"
95 	    "(^ksyms$)|(^clone$)|(^tl$)|(^tnf$)|(^kstat$)|(^mdesc$)|(^eeprom$)|"
96 	    "(^ptsl$)|(^mm$)|(^wc$)|(^dump$)|(^cn$)|(^svvslo$)|(^ptm$)|"
97 	    "(^ptc$)|(^openeepr$)|(^poll$)|(^sysmsg$)|(^random$)|(^trapstat$)|"
98 	    "(^cryptoadm$)|(^crypto$)|(^pool$)|(^poolctl$)|(^bl$)|(^kmdb$)|"
99 	    "(^sysevent$)|(^kssl$)|(^physmem$)",
100 	    TYPE_EXACT | DRV_RE, ILEVEL_1, minor_name
101 	},
102 	{ "pseudo", "ddi_pseudo",
103 	    "(^ip$)|(^tcp$)|(^udp$)|(^icmp$)|"
104 	    "(^ip6$)|(^tcp6$)|(^udp6$)|(^icmp6$)|"
105 	    "(^rts$)|(^arp$)|(^ipsecah$)|(^ipsecesp$)|(^keysock$)|(^spdsock$)|"
106 	    "(^nca$)|(^rds$)|(^sdp$)|(^ipnet$)|(^dlpistub$)|(^bpf$)",
107 	    TYPE_EXACT | DRV_RE, ILEVEL_1, minor_name
108 	},
109 	{ "pseudo", "ddi_pseudo",
110 	    "(^ipf$)|(^ipnat$)|(^ipstate$)|(^ipauth$)|"
111 	    "(^ipsync$)|(^ipscan$)|(^iplookup$)",
112 	    TYPE_EXACT | DRV_RE, ILEVEL_0, minor_name,
113 	},
114 	{ "pseudo", "ddi_pseudo", "dld",
115 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, node_name
116 	},
117 	{ "pseudo", "ddi_pseudo",
118 	    "(^kdmouse$)|(^rootprop$)",
119 	    TYPE_EXACT | DRV_RE, ILEVEL_0, node_name
120 	},
121 	{ "pseudo", "ddi_pseudo", "tod",
122 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, node_name
123 	},
124 	{ "pseudo", "ddi_pseudo", "envctrl(two)?",
125 	    TYPE_EXACT | DRV_RE, ILEVEL_1, minor_name,
126 	},
127 	{ "pseudo", "ddi_pseudo", "fcode",
128 	    TYPE_EXACT | DRV_RE, ILEVEL_0, minor_name,
129 	},
130 	{ "power_button", "ddi_power_button", NULL,
131 	    TYPE_EXACT, ILEVEL_0, power_button,
132 	},
133 	{ "FC port", "ddi_ctl:devctl", "fp",
134 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, fc_port
135 	},
136 	{ "printer", "ddi_printer", NULL,
137 	    TYPE_EXACT, ILEVEL_0, printer_create
138 	},
139 	{ "pseudo", "ddi_pseudo", "se",
140 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, se_hdlc_create
141 	},
142 	{ "ppm",  "ddi_ppm", NULL,
143 	    TYPE_EXACT, ILEVEL_0, ppm
144 	},
145 	{ "pseudo", "ddi_pseudo", "gpio_87317",
146 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, gpio
147 	},
148 	{ "pseudo", "ddi_pseudo", "sckmdrv",
149 	    TYPE_EXACT | DRV_RE, ILEVEL_0, kmdrv_create,
150 	},
151 	{ "pseudo", "ddi_pseudo", "oplkmdrv",
152 	    TYPE_EXACT | DRV_RE, ILEVEL_0, kmdrv_create,
153 	},
154 	{ "av", "^ddi_av:(isoch|async)$", NULL,
155 	    TYPE_RE, ILEVEL_0, av_create,
156 	},
157 	{ "pseudo", "ddi_pseudo", "tsalarm",
158 	    TYPE_EXACT | DRV_RE, ILEVEL_0, tsalarm_create,
159 	},
160 	{ "pseudo", "ddi_pseudo", "ntwdt",
161 	    TYPE_EXACT | DRV_RE, ILEVEL_0, ntwdt_create,
162 	},
163 	{ "pseudo", "ddi_pseudo", "daplt",
164 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, minor_name
165 	},
166 	{ "pseudo", "ddi_pseudo", "zcons",
167 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, zcons_create,
168 	},
169 	{ "pseudo", "ddi_pseudo", CPUID_DRIVER_NAME,
170 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, cpuid,
171 	},
172 	{ "pseudo", "ddi_pseudo", "glvc",
173 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, glvc,
174 	},
175 	{ "pseudo", "ddi_pseudo", "dm2s",
176 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, minor_name,
177 	},
178 	{ "pseudo", "ddi_pseudo", "nsmb",
179 	    TYPE_EXACT | DRV_RE, ILEVEL_1, minor_name,
180 	},
181 	{ "pseudo", "ddi_pseudo", "mem_cache",
182 	    TYPE_EXACT | DRV_RE, ILEVEL_1, minor_name,
183 	},
184 	{ "pseudo", "ddi_pseudo", "fm",
185 	    TYPE_EXACT | DRV_RE, ILEVEL_1, minor_name,
186 	},
187 	{ "pseudo", "ddi_pseudo", "tpm",
188 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, minor_name
189 	},
190 };
191 
192 DEVFSADM_CREATE_INIT_V0(misc_cbt);
193 
194 static devfsadm_remove_t misc_remove_cbt[] = {
195 	{ "pseudo", "^profile$",
196 	    RM_PRE | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
197 	},
198 	{ "pseudo", "^rsm$",
199 	    RM_PRE | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
200 	},
201 	{ "printer", "^printers/[0-9]+$",
202 	    RM_PRE | RM_HOT | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
203 	},
204 	{ "av", "^av/[0-9]+/(async|isoch)$",
205 	    RM_PRE | RM_HOT | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
206 	},
207 	{ "pseudo", "^daplt$",
208 	    RM_PRE | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
209 	},
210 	{ "pseudo", "^zcons/" ZONENAME_REGEXP "/(" ZCONS_MASTER_NAME "|"
211 		ZCONS_SLAVE_NAME ")$",
212 	    RM_PRE | RM_HOT | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
213 	},
214 	{ "pseudo", "^" CPUID_SELF_NAME "$", RM_ALWAYS | RM_PRE | RM_HOT,
215 	    ILEVEL_0, devfsadm_rm_all
216 	},
217 	{ "enclosure", "^es/ses[0-9]+$", RM_POST,
218 		ILEVEL_0, devfsadm_rm_all
219 	},
220 	{ "pseudo", "^pfil$",
221 	    RM_PRE | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
222 	},
223 	{ "pseudo", "^tpm$",
224 	    RM_PRE | RM_ALWAYS, ILEVEL_0, devfsadm_rm_all
225 	},
226 	{ "pseudo", "^sctp|sctp6$",
227 	    RM_PRE | RM_ALWAYS, ILEVEL_0, devfsadm_rm_link
228 	}
229 };
230 
231 /* Rules for gpio devices */
232 static devfsadm_enumerate_t gpio_rules[1] =
233 	{"^gpio([0-9]+)$", 1, MATCH_ALL};
234 
235 DEVFSADM_REMOVE_INIT_V0(misc_remove_cbt);
236 
237 /*
238  * Handles minor node type "ddi_display".
239  *
240  * type=ddi_display fbs/\M0 fb\N0
241  */
242 static int
243 display(di_minor_t minor, di_node_t node)
244 {
245 	char l_path[PATH_MAX + 1], contents[PATH_MAX + 1], *buf;
246 	devfsadm_enumerate_t rules[1] = {"^fb([0-9]+)$", 1, MATCH_ALL};
247 	char *mn = di_minor_name(minor);
248 
249 	/* create fbs/\M0 primary link */
250 	(void) strcpy(l_path, "fbs/");
251 	(void) strcat(l_path, mn);
252 	(void) devfsadm_mklink(l_path, node, minor, 0);
253 
254 	/* create fb\N0 which links to fbs/\M0 */
255 	if (devfsadm_enumerate_int(l_path, 0, &buf, rules, 1)) {
256 		return (DEVFSADM_CONTINUE);
257 	}
258 	(void) strcpy(contents, l_path);
259 	(void) strcpy(l_path, "fb");
260 	(void) strcat(l_path, buf);
261 	free(buf);
262 	(void) devfsadm_secondary_link(l_path, contents, 0);
263 	return (DEVFSADM_CONTINUE);
264 }
265 
266 /*
267  * Handles minor node type "ddi_parallel".
268  * type=ddi_parallel;name=mcpp     mcpp\N0
269  */
270 static int
271 parallel(di_minor_t minor, di_node_t node)
272 {
273 	char path[PATH_MAX + 1], *buf;
274 	devfsadm_enumerate_t rules[1] = {"mcpp([0-9]+)$", 1, MATCH_ALL};
275 
276 
277 	if (strcmp(di_node_name(node), "mcpp") != 0) {
278 		return (DEVFSADM_CONTINUE);
279 	}
280 
281 	if (NULL == (buf = di_devfs_path(node))) {
282 		return (DEVFSADM_CONTINUE);
283 	}
284 
285 	(void) snprintf(path, sizeof (path), "%s:%s",
286 	    buf, di_minor_name(minor));
287 
288 	di_devfs_path_free(buf);
289 
290 	if (devfsadm_enumerate_int(path, 0, &buf, rules, 1)) {
291 		return (DEVFSADM_CONTINUE);
292 	}
293 	(void) snprintf(path, sizeof (path), "mcpp%s", buf);
294 	free(buf);
295 
296 	(void) devfsadm_mklink(path, node, minor, 0);
297 	return (DEVFSADM_CONTINUE);
298 }
299 
300 static int
301 ses_callback(di_minor_t minor, di_node_t node)
302 {
303 	char l_path[PATH_MAX];
304 	char *buf;
305 	char *devfspath;
306 	char p_path[PATH_MAX];
307 	devfsadm_enumerate_t re[] = {"^es$/^ses([0-9]+)$", 1, MATCH_ALL};
308 
309 	/* find devices path -- need to free mem */
310 	if (NULL == (devfspath = di_devfs_path(node))) {
311 		return (DEVFSADM_CONTINUE);
312 	}
313 
314 	(void) snprintf(p_path, sizeof (p_path), "%s:%s", devfspath,
315 	    di_minor_name(minor));
316 
317 
318 	/* find next number to use; buf is an ascii number */
319 	if (devfsadm_enumerate_int(p_path, 0, &buf, re, 1)) {
320 		/* free memory */
321 		di_devfs_path_free(devfspath);
322 		return (DEVFSADM_CONTINUE);
323 	}
324 
325 	(void) snprintf(l_path, sizeof (l_path), "es/ses%s", buf);
326 
327 	(void) devfsadm_mklink(l_path, node, minor, 0);
328 	/* free memory */
329 	free(buf);
330 	di_devfs_path_free(devfspath);
331 	return (DEVFSADM_CONTINUE);
332 
333 }
334 
335 static int
336 node_slash_minor(di_minor_t minor, di_node_t node)
337 {
338 
339 	char path[PATH_MAX + 1];
340 
341 	(void) strcpy(path, di_node_name(node));
342 	(void) strcat(path, "/");
343 	(void) strcat(path, di_minor_name(minor));
344 	(void) devfsadm_mklink(path, node, minor, 0);
345 	return (DEVFSADM_CONTINUE);
346 }
347 
348 static int
349 driver_minor(di_minor_t minor, di_node_t node)
350 {
351 	char path[PATH_MAX + 1];
352 
353 	(void) strcpy(path, di_driver_name(node));
354 	(void) strcat(path, di_minor_name(minor));
355 	(void) devfsadm_mklink(path, node, minor, 0);
356 	return (DEVFSADM_CONTINUE);
357 }
358 
359 /*
360  * Handles links of the form:
361  * type=ddi_pseudo;name=xyz  \D
362  */
363 static int
364 node_name(di_minor_t minor, di_node_t node)
365 {
366 	(void) devfsadm_mklink(di_node_name(node), node, minor, 0);
367 	return (DEVFSADM_CONTINUE);
368 }
369 
370 /*
371  * Handles links of the form:
372  * type=ddi_pseudo;name=xyz  \M0
373  */
374 static int
375 minor_name(di_minor_t minor, di_node_t node)
376 {
377 	char *mn = di_minor_name(minor);
378 
379 	(void) devfsadm_mklink(mn, node, minor, 0);
380 	if (strcmp(mn, "icmp") == 0) {
381 		(void) devfsadm_mklink("rawip", node, minor, 0);
382 	}
383 	if (strcmp(mn, "icmp6") == 0) {
384 		(void) devfsadm_mklink("rawip6", node, minor, 0);
385 	}
386 	if (strcmp(mn, "ipf") == 0) {
387 		(void) devfsadm_mklink("ipl", node, minor, 0);
388 	}
389 	return (DEVFSADM_CONTINUE);
390 }
391 
392 /*
393  * create links at /dev/wifi for wifi minor node
394  */
395 static int
396 wifi_minor_name(di_minor_t minor, di_node_t node)
397 {
398 	char buf[256];
399 	char *mn = di_minor_name(minor);
400 
401 	(void) snprintf(buf, sizeof (buf), "%s%s", "wifi/", mn);
402 	(void) devfsadm_mklink(buf, node, minor, 0);
403 
404 	return (DEVFSADM_CONTINUE);
405 }
406 
407 static int
408 conskbd(di_minor_t minor, di_node_t node)
409 {
410 	(void) devfsadm_mklink("kbd", node, minor, 0);
411 	return (DEVFSADM_CONTINUE);
412 }
413 
414 static int
415 consms(di_minor_t minor, di_node_t node)
416 {
417 	(void) devfsadm_mklink("mouse", node, minor, 0);
418 	return (DEVFSADM_CONTINUE);
419 }
420 
421 static int
422 power_button(di_minor_t minor, di_node_t node)
423 {
424 	(void) devfsadm_mklink("power_button", node, minor, 0);
425 	return (DEVFSADM_CONTINUE);
426 }
427 
428 static int
429 fc_port(di_minor_t minor, di_node_t node)
430 {
431 	devfsadm_enumerate_t rules[1] = {"fc/fp([0-9]+)$", 1, MATCH_ALL};
432 	char *buf, path[PATH_MAX + 1];
433 	char *ptr;
434 
435 	if (NULL == (ptr = di_devfs_path(node))) {
436 		return (DEVFSADM_CONTINUE);
437 	}
438 
439 	(void) strcpy(path, ptr);
440 	(void) strcat(path, ":");
441 	(void) strcat(path, di_minor_name(minor));
442 
443 	di_devfs_path_free(ptr);
444 
445 	if (devfsadm_enumerate_int(path, 0, &buf, rules, 1) != 0) {
446 		return (DEVFSADM_CONTINUE);
447 	}
448 
449 	(void) strcpy(path, "fc/fp");
450 	(void) strcat(path, buf);
451 	free(buf);
452 
453 	(void) devfsadm_mklink(path, node, minor, 0);
454 	return (DEVFSADM_CONTINUE);
455 }
456 
457 /*
458  * Handles:
459  *	minor node type "ddi_printer".
460  * 	rules of the form: type=ddi_printer;name=bpp  \M0
461  */
462 static int
463 printer_create(di_minor_t minor, di_node_t node)
464 {
465 	char *mn;
466 	char path[PATH_MAX + 1], *buf;
467 	devfsadm_enumerate_t rules[1] = {"^printers$/^([0-9]+)$", 1, MATCH_ALL};
468 
469 	mn = di_minor_name(minor);
470 
471 	if (strcmp(di_driver_name(node), "bpp") == 0) {
472 		(void) devfsadm_mklink(mn, node, minor, 0);
473 	}
474 
475 	if (NULL == (buf = di_devfs_path(node))) {
476 		return (DEVFSADM_CONTINUE);
477 	}
478 
479 	(void) snprintf(path, sizeof (path), "%s:%s", buf, mn);
480 	di_devfs_path_free(buf);
481 
482 	if (devfsadm_enumerate_int(path, 0, &buf, rules, 1)) {
483 		return (DEVFSADM_CONTINUE);
484 	}
485 
486 	(void) snprintf(path, sizeof (path), "printers/%s", buf);
487 	free(buf);
488 
489 	(void) devfsadm_mklink(path, node, minor, 0);
490 
491 	return (DEVFSADM_CONTINUE);
492 }
493 
494 /*
495  * Handles links of the form:
496  * type=ddi_pseudo;name=se;minor2=hdlc	se_hdlc\N0
497  * type=ddi_pseudo;name=serial;minor2=hdlc	se_hdlc\N0
498  */
499 static int
500 se_hdlc_create(di_minor_t minor, di_node_t node)
501 {
502 	devfsadm_enumerate_t rules[1] = {"^se_hdlc([0-9]+)$", 1, MATCH_ALL};
503 	char *buf, path[PATH_MAX + 1];
504 	char *ptr;
505 	char *mn;
506 
507 	mn = di_minor_name(minor);
508 
509 	/* minor node should be of the form: "?,hdlc" */
510 	if (strcmp(mn + 1, ",hdlc") != 0) {
511 		return (DEVFSADM_CONTINUE);
512 	}
513 
514 	if (NULL == (ptr = di_devfs_path(node))) {
515 		return (DEVFSADM_CONTINUE);
516 	}
517 
518 	(void) strcpy(path, ptr);
519 	(void) strcat(path, ":");
520 	(void) strcat(path, mn);
521 
522 	di_devfs_path_free(ptr);
523 
524 	if (devfsadm_enumerate_int(path, 0, &buf, rules, 1) != 0) {
525 		return (DEVFSADM_CONTINUE);
526 	}
527 
528 	(void) strcpy(path, "se_hdlc");
529 	(void) strcat(path, buf);
530 	free(buf);
531 
532 	(void) devfsadm_mklink(path, node, minor, 0);
533 
534 	return (DEVFSADM_CONTINUE);
535 }
536 
537 static int
538 gpio(di_minor_t minor, di_node_t node)
539 {
540 	char l_path[PATH_MAX], p_path[PATH_MAX], *buf, *devfspath;
541 	char *minor_nm, *drvr_nm;
542 
543 
544 	minor_nm = di_minor_name(minor);
545 	drvr_nm = di_driver_name(node);
546 	if ((minor_nm == NULL) || (drvr_nm == NULL)) {
547 		return (DEVFSADM_CONTINUE);
548 	}
549 
550 	devfspath = di_devfs_path(node);
551 
552 	(void) strcpy(p_path, devfspath);
553 	(void) strcat(p_path, ":");
554 	(void) strcat(p_path, minor_nm);
555 	di_devfs_path_free(devfspath);
556 
557 	/* build the physical path from the components */
558 	if (devfsadm_enumerate_int(p_path, 0, &buf, gpio_rules, 1)) {
559 		return (DEVFSADM_CONTINUE);
560 	}
561 
562 	(void) snprintf(l_path, sizeof (l_path), "%s%s", "gpio", buf);
563 
564 	free(buf);
565 
566 	(void) devfsadm_mklink(l_path, node, minor, 0);
567 
568 	return (DEVFSADM_CONTINUE);
569 }
570 
571 /*
572  * Creates /dev/ppm nodes for Platform Specific PM module
573  */
574 static int
575 ppm(di_minor_t minor, di_node_t node)
576 {
577 	(void) devfsadm_mklink("ppm", node, minor, 0);
578 	return (DEVFSADM_CONTINUE);
579 }
580 
581 /*
582  * Handles:
583  *	/dev/av/[0-9]+/(async|isoch)
584  */
585 static int
586 av_create(di_minor_t minor, di_node_t node)
587 {
588 	devfsadm_enumerate_t rules[1] = {"^av$/^([0-9]+)$", 1, MATCH_ADDR};
589 	char	*minor_str;
590 	char	path[PATH_MAX + 1];
591 	char	*buf;
592 
593 	if ((buf = di_devfs_path(node)) == NULL) {
594 		return (DEVFSADM_CONTINUE);
595 	}
596 
597 	minor_str = di_minor_name(minor);
598 	(void) snprintf(path, sizeof (path), "%s:%s", buf, minor_str);
599 	di_devfs_path_free(buf);
600 
601 	if (devfsadm_enumerate_int(path, 0, &buf, rules, 1)) {
602 		return (DEVFSADM_CONTINUE);
603 	}
604 
605 	(void) snprintf(path, sizeof (path), "av/%s/%s", buf, minor_str);
606 	free(buf);
607 
608 	(void) devfsadm_mklink(path, node, minor, 0);
609 
610 	return (DEVFSADM_CONTINUE);
611 }
612 
613 /*
614  * Creates /dev/lom and /dev/tsalarm:ctl for tsalarm node
615  */
616 static int
617 tsalarm_create(di_minor_t minor, di_node_t node)
618 {
619 	char buf[PATH_MAX + 1];
620 	char *mn = di_minor_name(minor);
621 
622 	(void) snprintf(buf, sizeof (buf), "%s%s", di_node_name(node), ":ctl");
623 
624 	(void) devfsadm_mklink(mn, node, minor, 0);
625 	(void) devfsadm_mklink(buf, node, minor, 0);
626 
627 	return (DEVFSADM_CONTINUE);
628 }
629 
630 /*
631  * Creates /dev/ntwdt for ntwdt node
632  */
633 static int
634 ntwdt_create(di_minor_t minor, di_node_t node)
635 {
636 	(void) devfsadm_mklink("ntwdt", node, minor, 0);
637 	return (DEVFSADM_CONTINUE);
638 }
639 
640 static int
641 zcons_create(di_minor_t minor, di_node_t node)
642 {
643 	char	*minor_str;
644 	char	*zonename;
645 	char	path[MAXPATHLEN];
646 
647 	minor_str = di_minor_name(minor);
648 
649 	if (di_prop_lookup_strings(DDI_DEV_T_ANY, node, "zonename",
650 	    &zonename) == -1) {
651 		return (DEVFSADM_CONTINUE);
652 	}
653 
654 	(void) snprintf(path, sizeof (path), "zcons/%s/%s", zonename,
655 	    minor_str);
656 	(void) devfsadm_mklink(path, node, minor, 0);
657 
658 	return (DEVFSADM_CONTINUE);
659 }
660 
661 /*
662  *	/dev/cpu/self/cpuid 	->	/devices/pseudo/cpuid@0:self
663  */
664 static int
665 cpuid(di_minor_t minor, di_node_t node)
666 {
667 	(void) devfsadm_mklink(CPUID_SELF_NAME, node, minor, 0);
668 	return (DEVFSADM_CONTINUE);
669 }
670 
671 /*
672  * For device
673  *      /dev/spfma -> /devices/virtual-devices/fma@5:glvc
674  */
675 static int
676 glvc(di_minor_t minor, di_node_t node)
677 {
678 	char node_name[MAXNAMELEN + 1];
679 
680 	(void) strcpy(node_name, di_node_name(node));
681 
682 	if (strncmp(node_name, "fma", 3) == 0) {
683 		/* Only one fma channel */
684 		(void) devfsadm_mklink("spfma", node, minor, 0);
685 	}
686 	return (DEVFSADM_CONTINUE);
687 }
688 
689 /*
690  * Handles links of the form:
691  * type=ddi_pseudo;name=sckmdrv		kmdrv\M0
692  * type=ddi_pseudo;name=oplkmdrv	kmdrv\M0
693  */
694 static int
695 kmdrv_create(di_minor_t minor, di_node_t node)
696 {
697 
698 	(void) devfsadm_mklink("kmdrv", node, minor, 0);
699 	return (DEVFSADM_CONTINUE);
700 }
701