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) 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2016-2017, Chris Fraire <cfraire@me.com>.
25 * Copyright 2021, Tintri by DDN. All rights reserved.
26 * Copyright 2022, Oxide Computer Company.
27 */
28
29 /*
30 * Main door handler functions used by ipmgmtd to process the different door
31 * call requests, issued by the library libipadm.so.
32 */
33
34 #include <alloca.h>
35 #include <pwd.h>
36 #include <auth_attr.h>
37 #include <secdb.h>
38 #include <stdlib.h>
39 #include <stdio.h>
40 #include <string.h>
41 #include <strings.h>
42 #include <errno.h>
43 #include <assert.h>
44 #include <libnvpair.h>
45 #include "ipmgmt_impl.h"
46
47
48 static void ipmgmt_common_handler(char *, char *, db_wfunc_t *);
49
50 /* Handler declaration for each door command */
51 typedef void ipmgmt_door_handler_t(void *argp);
52
53 static ipmgmt_door_handler_t ipmgmt_getaddr_handler,
54 ipmgmt_getprop_handler,
55 ipmgmt_getif_handler,
56 ipmgmt_initif_handler,
57 ipmgmt_aobjop_handler,
58 ipmgmt_resetaddr_handler,
59 ipmgmt_setif_handler,
60 ipmgmt_resetif_handler,
61 ipmgmt_resetprop_handler,
62 ipmgmt_setaddr_handler,
63 ipmgmt_setprop_handler,
64 ipmgmt_ipmp_update_handler;
65
66 typedef struct ipmgmt_door_info_s {
67 uint_t idi_cmd;
68 boolean_t idi_set;
69 ipmgmt_door_handler_t *idi_handler;
70 } ipmgmt_door_info_t;
71
72 /* maps door commands to door handler functions */
73 static ipmgmt_door_info_t i_ipmgmt_door_info_tbl[] = {
74 { IPMGMT_CMD_SETPROP, B_TRUE, ipmgmt_setprop_handler },
75 { IPMGMT_CMD_SETIF, B_TRUE, ipmgmt_setif_handler },
76 { IPMGMT_CMD_SETADDR, B_TRUE, ipmgmt_setaddr_handler },
77 { IPMGMT_CMD_GETPROP, B_FALSE, ipmgmt_getprop_handler },
78 { IPMGMT_CMD_GETIF, B_FALSE, ipmgmt_getif_handler },
79 { IPMGMT_CMD_GETADDR, B_FALSE, ipmgmt_getaddr_handler },
80 { IPMGMT_CMD_RESETIF, B_TRUE, ipmgmt_resetif_handler },
81 { IPMGMT_CMD_RESETADDR, B_TRUE, ipmgmt_resetaddr_handler },
82 { IPMGMT_CMD_RESETPROP, B_TRUE, ipmgmt_resetprop_handler },
83 { IPMGMT_CMD_INITIF, B_TRUE, ipmgmt_initif_handler },
84 { IPMGMT_CMD_ADDROBJ_LOOKUPADD, B_TRUE, ipmgmt_aobjop_handler },
85 { IPMGMT_CMD_ADDROBJ_SETLIFNUM, B_TRUE, ipmgmt_aobjop_handler },
86 { IPMGMT_CMD_ADDROBJ_ADD, B_TRUE, ipmgmt_aobjop_handler },
87 { IPMGMT_CMD_AOBJNAME2ADDROBJ, B_FALSE, ipmgmt_aobjop_handler },
88 { IPMGMT_CMD_LIF2ADDROBJ, B_FALSE, ipmgmt_aobjop_handler },
89 { IPMGMT_CMD_IPMP_UPDATE, B_FALSE, ipmgmt_ipmp_update_handler},
90 { 0, 0, NULL },
91 };
92
93 /*
94 * The main server procedure function that gets invoked for any of the incoming
95 * door commands. Inside this function we identify the incoming command and
96 * invoke the right door handler function.
97 */
98 /* ARGSUSED */
99 void
ipmgmt_handler(void * cookie,char * argp,size_t argsz,door_desc_t * dp,uint_t n_desc)100 ipmgmt_handler(void *cookie, char *argp, size_t argsz, door_desc_t *dp,
101 uint_t n_desc)
102 {
103 ipmgmt_door_info_t *infop = NULL;
104 ipmgmt_retval_t retval;
105 int i;
106 uint_t err;
107 ucred_t *cred = NULL;
108
109 for (i = 0; i_ipmgmt_door_info_tbl[i].idi_cmd != 0; i++) {
110 if (i_ipmgmt_door_info_tbl[i].idi_cmd ==
111 ((ipmgmt_arg_t *)(void *)argp)->ia_cmd) {
112 infop = &i_ipmgmt_door_info_tbl[i];
113 break;
114 }
115 }
116
117 if (infop == NULL) {
118 ipmgmt_log(LOG_ERR, "Invalid door command specified");
119 err = EINVAL;
120 goto fail;
121 }
122
123 /* check for solaris.network.interface.config authorization */
124 if (infop->idi_set) {
125 uid_t uid;
126 struct passwd pwd;
127 char buf[1024];
128
129 if (door_ucred(&cred) != 0) {
130 err = errno;
131 ipmgmt_log(LOG_ERR, "Could not get user credentials.");
132 goto fail;
133 }
134 uid = ucred_getruid(cred);
135 if ((int)uid < 0) {
136 err = errno;
137 ipmgmt_log(LOG_ERR, "Could not get user id.");
138 goto fail;
139 }
140 if (getpwuid_r(uid, &pwd, buf, sizeof (buf)) ==
141 NULL) {
142 err = errno;
143 ipmgmt_log(LOG_ERR, "Could not get password entry.");
144 goto fail;
145 }
146 if (chkauthattr(NETWORK_INTERFACE_CONFIG_AUTH,
147 pwd.pw_name) != 1) {
148 err = EPERM;
149 ipmgmt_log(LOG_ERR, "Not authorized for operation.");
150 goto fail;
151 }
152 ucred_free(cred);
153 }
154
155 /* individual handlers take care of calling door_return */
156 infop->idi_handler((void *)argp);
157 return;
158 fail:
159 ucred_free(cred);
160 retval.ir_err = err;
161 (void) door_return((char *)&retval, sizeof (retval), NULL, 0);
162 }
163
164 /*
165 * Handles the door command IPMGMT_CMD_GETPROP. It retrieves the persisted
166 * property value for the given property.
167 */
168 static void
ipmgmt_getprop_handler(void * argp)169 ipmgmt_getprop_handler(void *argp)
170 {
171 ipmgmt_prop_arg_t *pargp = argp;
172 ipmgmt_getprop_rval_t rval, *rvalp = &rval;
173
174 assert(pargp->ia_cmd == IPMGMT_CMD_GETPROP);
175
176 rvalp->ir_err = ipmgmt_db_walk(ipmgmt_db_getprop, pargp, IPADM_DB_READ);
177 if (rvalp->ir_err == 0)
178 (void) strlcpy(rvalp->ir_pval, pargp->ia_pval,
179 sizeof (rvalp->ir_pval));
180 (void) door_return((char *)rvalp, sizeof (*rvalp), NULL, 0);
181 }
182
183 /*
184 * Handles the door command IPMGMT_CMD_SETPROP. It persists the property value
185 * for the given property in the DB.
186 */
187 static void
ipmgmt_setprop_handler(void * argp)188 ipmgmt_setprop_handler(void *argp)
189 {
190 ipmgmt_prop_arg_t *pargp = argp;
191 ipmgmt_retval_t rval;
192 ipadm_dbwrite_cbarg_t cb;
193 nvlist_t *nvl = NULL;
194 int err;
195
196 assert(pargp->ia_cmd == IPMGMT_CMD_SETPROP);
197
198 if ((err = nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0)) != 0)
199 goto fail;
200 if (pargp->ia_module[0] != '\0' &&
201 (err = nvlist_add_string(nvl, IPADM_NVP_PROTONAME,
202 pargp->ia_module)) != 0) {
203 goto fail;
204 }
205 if (pargp->ia_ifname[0] != '\0' &&
206 (err = nvlist_add_string(nvl, IPADM_NVP_IFNAME,
207 pargp->ia_ifname)) != 0)
208 goto fail;
209 if (pargp->ia_aobjname[0] != '\0' &&
210 (err = nvlist_add_string(nvl, IPADM_NVP_AOBJNAME,
211 pargp->ia_aobjname)) != 0)
212 goto fail;
213 if ((err = nvlist_add_string(nvl, pargp->ia_pname,
214 pargp->ia_pval)) != 0)
215 goto fail;
216
217 cb.dbw_nvl = nvl;
218 cb.dbw_flags = pargp->ia_flags;
219 err = ipmgmt_db_walk(ipmgmt_db_update, &cb, IPADM_DB_WRITE);
220 fail:
221 nvlist_free(nvl);
222 rval.ir_err = err;
223 (void) door_return((char *)&rval, sizeof (rval), NULL, 0);
224 }
225
226 /*
227 * Helper function for ipmgmt_setaddr_handler().
228 * It converts the nvlist_t, `nvl', to aobjmap node `nodep'.
229 */
230 static int
i_ipmgmt_nvl2aobjnode(nvlist_t * nvl,ipmgmt_aobjmap_t * nodep)231 i_ipmgmt_nvl2aobjnode(nvlist_t *nvl, ipmgmt_aobjmap_t *nodep)
232 {
233 char *aobjname = NULL, *ifname = NULL;
234 int32_t lnum;
235 nvlist_t *nvladdr;
236 sa_family_t af = AF_UNSPEC;
237 ipadm_addr_type_t addrtype = IPADM_ADDR_NONE;
238 int err = 0;
239
240 /*
241 * Retrieve all the information needed to build '*nodep' from
242 * nvlist_t nvl.
243 */
244 if ((err = nvlist_lookup_string(nvl, IPADM_NVP_AOBJNAME,
245 &aobjname)) != 0 ||
246 (err = nvlist_lookup_string(nvl, IPADM_NVP_IFNAME, &ifname)) != 0 ||
247 (err = nvlist_lookup_int32(nvl, IPADM_NVP_LIFNUM, &lnum)) != 0) {
248 return (err);
249 }
250 if (nvlist_exists(nvl, IPADM_NVP_IPV4ADDR)) {
251 af = AF_INET;
252 addrtype = IPADM_ADDR_STATIC;
253 } else if (nvlist_lookup_nvlist(nvl, IPADM_NVP_DHCP, &nvladdr) == 0) {
254 char *reqhost;
255
256 af = AF_INET;
257 addrtype = IPADM_ADDR_DHCP;
258
259 /*
260 * ipmgmt_am_reqhost comes through in `nvl' for purposes of
261 * updating the cached representation, but it is persisted as
262 * a stand-alone DB line; so remove it after copying it.
263 */
264 if (!nvlist_exists(nvl, IPADM_NVP_REQHOST)) {
265 *nodep->ipmgmt_am_reqhost = '\0';
266 } else {
267 if ((err = nvlist_lookup_string(nvl, IPADM_NVP_REQHOST,
268 &reqhost)) != 0)
269 return (err);
270
271 (void) strlcpy(nodep->ipmgmt_am_reqhost, reqhost,
272 sizeof (nodep->ipmgmt_am_reqhost));
273 (void) nvlist_remove(nvl, IPADM_NVP_REQHOST,
274 DATA_TYPE_STRING);
275 }
276 } else if (nvlist_exists(nvl, IPADM_NVP_IPV6ADDR)) {
277 af = AF_INET6;
278 addrtype = IPADM_ADDR_STATIC;
279 } else if (nvlist_lookup_nvlist(nvl, IPADM_NVP_INTFID, &nvladdr) == 0) {
280 struct sockaddr_in6 sin6 = {0};
281 uint8_t *addr6;
282 uint32_t plen;
283 uint_t n;
284
285 af = AF_INET6;
286 addrtype = IPADM_ADDR_IPV6_ADDRCONF;
287 if (nvlist_lookup_uint32(nvladdr, IPADM_NVP_PREFIXLEN,
288 &plen) != 0)
289 return (EINVAL);
290 if (plen != 0) {
291 if (nvlist_lookup_uint8_array(nvladdr,
292 IPADM_NVP_IPNUMADDR, &addr6, &n) != 0)
293 return (EINVAL);
294 bcopy(addr6, &sin6.sin6_addr, n);
295 }
296
297 nodep->ipmgmt_am_linklocal = B_TRUE;
298 nodep->ipmgmt_am_ifid = sin6;
299 }
300
301 /*
302 * populate the non-addrtype-specific `*nodep' with retrieved values.
303 */
304 (void) strlcpy(nodep->am_ifname, ifname, sizeof (nodep->am_ifname));
305 (void) strlcpy(nodep->am_aobjname, aobjname,
306 sizeof (nodep->am_aobjname));
307 nodep->am_lnum = lnum;
308 nodep->am_family = af;
309 nodep->am_atype = addrtype;
310 nodep->am_next = NULL;
311
312 /*
313 * Do not store logical interface number in persistent store as it
314 * takes different value on reboot. So remove it from `nvl'.
315 */
316 if (nvlist_exists(nvl, IPADM_NVP_LIFNUM))
317 (void) nvlist_remove(nvl, IPADM_NVP_LIFNUM, DATA_TYPE_INT32);
318
319 return (0);
320 }
321
322 /*
323 * Handles the door command IPMGMT_CMD_SETADDR. It adds a new address object
324 * node to the list `aobjmap' and optionally persists the address
325 * information in the DB.
326 */
327 static void
ipmgmt_setaddr_handler(void * argp)328 ipmgmt_setaddr_handler(void *argp)
329 {
330 ipmgmt_setaddr_arg_t *sargp = argp;
331 ipmgmt_retval_t rval;
332 ipmgmt_aobjmap_t node = {0};
333 nvlist_t *nvl = NULL;
334 char *nvlbuf;
335 size_t nvlsize = sargp->ia_nvlsize;
336 uint32_t flags = sargp->ia_flags;
337 int err = 0;
338
339 nvlbuf = (char *)argp + sizeof (ipmgmt_setaddr_arg_t);
340 if ((err = nvlist_unpack(nvlbuf, nvlsize, &nvl, 0)) != 0)
341 goto ret;
342 if (flags & (IPMGMT_ACTIVE|IPMGMT_INIT)) {
343 if ((err = i_ipmgmt_nvl2aobjnode(nvl, &node)) != 0)
344 goto ret;
345 if (flags & IPMGMT_INIT)
346 node.am_flags = (IPMGMT_ACTIVE|IPMGMT_PERSIST);
347 else
348 node.am_flags = flags & ~IPMGMT_PROPS_ONLY;
349 if ((err = ipmgmt_aobjmap_op(&node, ADDROBJ_ADD)) != 0)
350 goto ret;
351 }
352 if ((flags & IPMGMT_PERSIST) && !(flags & IPMGMT_PROPS_ONLY)) {
353 ipadm_dbwrite_cbarg_t cb;
354
355 cb.dbw_nvl = nvl;
356 cb.dbw_flags = 0;
357 err = ipmgmt_db_walk(ipmgmt_db_add, &cb, IPADM_DB_WRITE);
358 }
359 ret:
360 nvlist_free(nvl);
361 rval.ir_err = err;
362 (void) door_return((char *)&rval, sizeof (rval), NULL, 0);
363 }
364
365 /*
366 * Handles the door commands that read or modify the `aobjmap' structure.
367 *
368 * IPMGMT_CMD_ADDROBJ_LOOKUPADD - places a stub address object in `aobjmap'
369 * after ensuring that the namespace is not taken. If required, also
370 * generates an `aobjname' for address object for the library to use.
371 * IPMGMT_CMD_ADDROBJ_ADD - add/update address object in `aobjmap'
372 * IPMGMT_CMD_LIF2ADDROBJ - given a logical interface, return address object
373 * associated with that logical interface.
374 * IPMGMT_CMD_AOBJNAME2ADDROBJ - given an address object name return logical
375 * interface associated with that address object.
376 */
377 static void
ipmgmt_aobjop_handler(void * argp)378 ipmgmt_aobjop_handler(void *argp)
379 {
380 ipmgmt_aobjop_arg_t *largp = argp;
381 ipmgmt_retval_t rval;
382 ipmgmt_aobjop_rval_t aobjrval;
383 void *rvalp;
384 size_t rsize;
385 ipmgmt_aobjmap_t node;
386 int err = 0;
387 char *ifname = largp->ia_ifname;
388 char *aobjname = largp->ia_aobjname;
389 int32_t lnum = largp->ia_lnum;
390 sa_family_t af = largp->ia_family;
391 ipadm_addr_type_t atype = largp->ia_atype;
392 ipmgmt_aobjmap_t *head;
393
394 switch (largp->ia_cmd) {
395 case IPMGMT_CMD_ADDROBJ_LOOKUPADD:
396 rsize = sizeof (ipmgmt_aobjop_rval_t);
397 rvalp = &aobjrval;
398 bzero(&node, sizeof (node));
399 (void) strlcpy(node.am_aobjname, aobjname,
400 sizeof (node.am_aobjname));
401 (void) strlcpy(node.am_ifname, ifname,
402 sizeof (node.am_ifname));
403 node.am_family = af;
404 node.am_atype = atype;
405 if (atype == IPADM_ADDR_IPV6_ADDRCONF) {
406 node.ipmgmt_am_linklocal = B_TRUE;
407 }
408 /* no logical number is associated with this addrobj yet */
409 node.am_lnum = -1;
410 /* The address object is not persisted yet. */
411 node.am_flags = IPMGMT_ACTIVE;
412 err = ipmgmt_aobjmap_op(&node, ADDROBJ_LOOKUPADD);
413 if (err == 0) {
414 (void) strlcpy(aobjrval.ir_aobjname, node.am_aobjname,
415 sizeof (aobjrval.ir_aobjname));
416 }
417 break;
418 case IPMGMT_CMD_ADDROBJ_SETLIFNUM:
419 rsize = sizeof (ipmgmt_retval_t);
420 rvalp = &rval;
421 bzero(&node, sizeof (node));
422 (void) strlcpy(node.am_aobjname, aobjname,
423 sizeof (node.am_aobjname));
424 (void) strlcpy(node.am_ifname, ifname,
425 sizeof (node.am_ifname));
426 node.am_family = af;
427 node.am_lnum = lnum;
428 err = ipmgmt_aobjmap_op(&node, ADDROBJ_SETLIFNUM);
429 break;
430 case IPMGMT_CMD_ADDROBJ_ADD:
431 rsize = sizeof (ipmgmt_retval_t);
432 rvalp = &rval;
433 if (aobjname[0] == '\0' || ifname[0] == '\0' || lnum == -1 ||
434 af == AF_UNSPEC) {
435 err = EINVAL;
436 break;
437 }
438 bzero(&node, sizeof (node));
439 (void) strlcpy(node.am_aobjname, aobjname,
440 sizeof (node.am_aobjname));
441 (void) strlcpy(node.am_ifname, ifname,
442 sizeof (node.am_ifname));
443 node.am_atype = atype;
444 node.am_lnum = lnum;
445 node.am_family = af;
446 /* The address object is not persisted. */
447 node.am_flags = IPMGMT_ACTIVE;
448 err = ipmgmt_aobjmap_op(&node, ADDROBJ_ADD);
449 break;
450 case IPMGMT_CMD_AOBJNAME2ADDROBJ:
451 rsize = sizeof (ipmgmt_aobjop_rval_t);
452 rvalp = &aobjrval;
453 bzero(&aobjrval, sizeof (aobjrval));
454 if (aobjname[0] == '\0') {
455 err = EINVAL;
456 break;
457 }
458 (void) pthread_rwlock_rdlock(&aobjmap.aobjmap_rwlock);
459 head = aobjmap.aobjmap_head;
460 for (; head; head = head->am_next) {
461 if (strcmp(head->am_aobjname, aobjname) != 0)
462 continue;
463 /*
464 * For an auto-configured interface, return
465 * the lifnum that has the link-local on it.
466 * Other logical interfaces were created for
467 * prefixes and dhcpv6 addresses and do not
468 * have am_ifid set.
469 */
470 if (head->am_atype != IPADM_ADDR_IPV6_ADDRCONF ||
471 head->ipmgmt_am_linklocal) {
472 break;
473 }
474 }
475 if (head == NULL) {
476 err = ENOENT;
477 (void) pthread_rwlock_unlock(&aobjmap.aobjmap_rwlock);
478 break;
479 }
480 (void) strlcpy(aobjrval.ir_ifname, head->am_ifname,
481 sizeof (aobjrval.ir_ifname));
482 aobjrval.ir_lnum = head->am_lnum;
483 aobjrval.ir_family = head->am_family;
484 aobjrval.ir_flags = head->am_flags;
485 aobjrval.ir_atype = head->am_atype;
486 aobjrval.ir_atype_cache = head->am_atype_cache;
487 (void) pthread_rwlock_unlock(&aobjmap.aobjmap_rwlock);
488 break;
489 case IPMGMT_CMD_LIF2ADDROBJ:
490 rsize = sizeof (ipmgmt_aobjop_rval_t);
491 rvalp = &aobjrval;
492 bzero(&aobjrval, sizeof (aobjrval));
493 if (ifname[0] == '\0') {
494 err = EINVAL;
495 break;
496 }
497 (void) pthread_rwlock_rdlock(&aobjmap.aobjmap_rwlock);
498 head = aobjmap.aobjmap_head;
499 for (; head; head = head->am_next) {
500 if (strcmp(head->am_ifname, ifname) == 0 &&
501 head->am_lnum == lnum &&
502 head->am_family == af) {
503 break;
504 }
505 }
506 if (head == NULL) {
507 err = ENOENT;
508 (void) pthread_rwlock_unlock(&aobjmap.aobjmap_rwlock);
509 break;
510 }
511 (void) strlcpy(aobjrval.ir_aobjname, head->am_aobjname,
512 sizeof (aobjrval.ir_aobjname));
513 aobjrval.ir_atype = head->am_atype;
514 aobjrval.ir_flags = head->am_flags;
515 aobjrval.ir_atype_cache = head->am_atype_cache;
516 (void) pthread_rwlock_unlock(&aobjmap.aobjmap_rwlock);
517 break;
518 default:
519 rsize = sizeof (ipmgmt_retval_t);
520 rvalp = &rval;
521 err = EINVAL;
522 }
523 ((ipmgmt_retval_t *)rvalp)->ir_err = err;
524 (void) door_return((char *)rvalp, rsize, NULL, 0);
525 }
526
527 /*
528 * Given an interface name and family, deletes all the address objects
529 * associated with it.
530 */
531 void
i_ipmgmt_delif_aobjs(char * ifname,sa_family_t af,uint32_t flags)532 i_ipmgmt_delif_aobjs(char *ifname, sa_family_t af, uint32_t flags)
533 {
534 ipmgmt_aobjmap_t *head, *next, *prev;
535 ipadm_db_op_t db_op;
536
537 prev = NULL;
538
539 (void) pthread_rwlock_wrlock(&aobjmap.aobjmap_rwlock);
540 head = aobjmap.aobjmap_head;
541 for (; head; head = next) {
542 next = head->am_next;
543 if (strcmp(head->am_ifname, ifname) != 0 ||
544 head->am_family != af) {
545 prev = head;
546 continue;
547 }
548
549 if (head->am_flags == (IPMGMT_ACTIVE|IPMGMT_PERSIST) &&
550 flags == IPMGMT_ACTIVE) {
551 /*
552 * If the addres is present in both active and
553 * persistent store, and if we are performing
554 * a temporary delete, we update the node to
555 * indicate that the address is only present in
556 * persistent store and we proceed. Otherwise
557 * we always delete the node from aobjmap.
558 */
559 head->am_flags &= ~IPMGMT_ACTIVE;
560 head->am_lnum = -1;
561 db_op = IPADM_DB_WRITE;
562 } else {
563 db_op = IPADM_DB_DELETE;
564 if (prev == NULL)
565 aobjmap.aobjmap_head = next;
566 else
567 prev->am_next = next;
568 }
569 (void) ipmgmt_persist_aobjmap(head, db_op);
570 if (db_op == IPADM_DB_DELETE)
571 free(head);
572 }
573 (void) pthread_rwlock_unlock(&aobjmap.aobjmap_rwlock);
574 }
575
576 /*
577 * Handles the door command IPMGMT_CMD_SETIF. It persists the interface
578 * information in the DB.
579 */
580 static void
ipmgmt_setif_handler(void * argp)581 ipmgmt_setif_handler(void *argp)
582 {
583 ipmgmt_retval_t rval;
584
585 rval.ir_err = ipmgmt_persist_if(argp);
586 (void) door_return((char *)&rval, sizeof (rval), NULL, 0);
587 }
588
589 /*
590 * Handles the door command IPMGMT_CMD_RESETIF. For the given interface,
591 * deletes all the persisted interface configuration. It also deletes, from
592 * `aobjmap', all the address objects configured on the given interface.
593 */
594 static void
ipmgmt_resetif_handler(void * argp)595 ipmgmt_resetif_handler(void *argp)
596 {
597 ipmgmt_if_arg_t *rargp = argp;
598 ipmgmt_retval_t rval;
599 ipmgmt_if_cbarg_t cbarg;
600 uint32_t flags = rargp->ia_flags;
601 int err = 0;
602
603 cbarg.cb_family = rargp->ia_family;
604 cbarg.cb_ifname = rargp->ia_ifname;
605
606 cbarg.cb_ipv4exists = B_TRUE;
607 cbarg.cb_ipv6exists = B_TRUE;
608
609 if (flags & IPMGMT_PERSIST)
610 err = ipmgmt_db_walk(ipmgmt_db_resetif, &cbarg,
611 IPADM_DB_DELETE);
612
613 if (flags & IPMGMT_ACTIVE)
614 i_ipmgmt_delif_aobjs(rargp->ia_ifname, rargp->ia_family,
615 flags);
616
617 rval.ir_err = err;
618 (void) door_return((char *)&rval, sizeof (rval), NULL, 0);
619 }
620
621 /*
622 * Handles the door command IPMGMT_CMD_RESETADDR. For the given addrobj
623 * deletes all the persisted addrobj configuration. It also deletes the
624 * corresponding node, from `aobjmap'.
625 */
626 static void
ipmgmt_resetaddr_handler(void * argp)627 ipmgmt_resetaddr_handler(void *argp)
628 {
629 ipmgmt_addr_arg_t *rargp = argp;
630 ipmgmt_retval_t rval;
631 ipmgmt_aobjmap_t node;
632 uint32_t flags = rargp->ia_flags;
633 int err = 0;
634 ipmgmt_resetaddr_cbarg_t cbarg;
635
636 cbarg.cb_aobjname = rargp->ia_aobjname;
637
638 if (flags & IPMGMT_PERSIST)
639 err = ipmgmt_db_walk(ipmgmt_db_resetaddr, &cbarg,
640 IPADM_DB_DELETE);
641
642 if (flags & IPMGMT_ACTIVE) {
643 bzero(&node, sizeof (node));
644 (void) strlcpy(node.am_aobjname, rargp->ia_aobjname,
645 sizeof (node.am_aobjname));
646
647 /*
648 * am_lnum is used only for IPv6 autoconf case, since there
649 * can be multiple nodes with the same aobjname.
650 */
651 node.am_lnum = rargp->ia_lnum;
652 node.am_flags = flags;
653 (void) ipmgmt_aobjmap_op(&node, ADDROBJ_DELETE);
654 }
655
656 rval.ir_err = err;
657 (void) door_return((char *)&rval, sizeof (rval), NULL, 0);
658 }
659
660 /*
661 * Handles the door command IPMGMT_CMD_GETADDR. It retrieves the persisted
662 * address for a given `gargp->ia_aobjname'. If it is not defined then it
663 * retrieves all the addresses configured on `gargp->ia_ifname'. The
664 * "ipadm show-addr addrobj" or "ipadm show-addr <ifname>/\*" will call this
665 * handler through library.
666 */
667 static void
ipmgmt_getaddr_handler(void * argp)668 ipmgmt_getaddr_handler(void *argp)
669 {
670 ipmgmt_getaddr_arg_t *gargp = argp;
671
672 ipmgmt_common_handler(gargp->ia_ifname, gargp->ia_aobjname,
673 ipmgmt_db_getaddr);
674 }
675
676 /*
677 * Handles the door command IPMGMT_CMD_RESETPROP. It deletes the property line
678 * from the DB.
679 */
680 static void
ipmgmt_resetprop_handler(void * argp)681 ipmgmt_resetprop_handler(void *argp)
682 {
683 ipmgmt_prop_arg_t *pargp = argp;
684 ipmgmt_retval_t rval;
685
686 assert(pargp->ia_cmd == IPMGMT_CMD_RESETPROP);
687
688 rval.ir_err = ipmgmt_db_walk(ipmgmt_db_resetprop, pargp,
689 IPADM_DB_DELETE);
690 (void) door_return((char *)&rval, sizeof (rval), NULL, 0);
691 }
692
693 /*
694 * Handles the door command IPMGMT_CMD_GETIF. It retrieves the names of all
695 * persisted interfaces and the IP protocol families (IPv4 or IPv6) they
696 * support. Returns the info as a nvlist using door_return() from
697 * ipmgmt_common_handler().
698 */
699 static void
ipmgmt_getif_handler(void * argp)700 ipmgmt_getif_handler(void *argp)
701 {
702 ipmgmt_getif_arg_t *getif = argp;
703
704 assert(getif->ia_cmd == IPMGMT_CMD_GETIF);
705
706 ipmgmt_common_handler(getif->ia_ifname, NULL,
707 ipmgmt_db_getif);
708 }
709
710 /*
711 * Handles the door command IPMGMT_CMD_INITIF. It retrieves all the persisted
712 * interface configuration (interface properties and addresses), for all those
713 * interfaces that need to be initialized.
714 */
715 static void
ipmgmt_initif_handler(void * argp)716 ipmgmt_initif_handler(void *argp)
717 {
718 ipmgmt_initif_arg_t *initif = argp;
719 size_t buflen, nvlsize;
720 char *buf = NULL, *onvlbuf, *invlbuf;
721 ipmgmt_get_rval_t rval, *rvalp = &rval;
722 ipmgmt_initif_cbarg_t cbarg;
723 int err;
724
725 assert(initif->ia_cmd == IPMGMT_CMD_INITIF);
726
727 bzero(&cbarg, sizeof (cbarg));
728 invlbuf = (char *)argp + sizeof (ipmgmt_initif_arg_t);
729 nvlsize = initif->ia_nvlsize;
730 err = nvlist_unpack(invlbuf, nvlsize, &cbarg.cb_invl, 0);
731 if (err != 0)
732 goto fail;
733
734 cbarg.cb_family = initif->ia_family;
735 if (nvlist_alloc(&cbarg.cb_onvl, NV_UNIQUE_NAME, 0) != 0)
736 goto fail;
737
738 err = ipmgmt_db_walk(ipmgmt_db_initif, &cbarg, IPADM_DB_READ);
739 if (err == ENOENT && cbarg.cb_ocnt > 0) {
740 /*
741 * If there is at least one entry in the nvlist,
742 * do not return error.
743 */
744 err = 0;
745 }
746 if (err != 0)
747 goto fail;
748
749 if ((err = nvlist_size(cbarg.cb_onvl, &nvlsize, NV_ENCODE_NATIVE)) != 0)
750 goto fail;
751
752 if (nvlsize > (UINT32_MAX - sizeof (ipmgmt_get_rval_t)))
753 goto fail;
754
755 buflen = nvlsize + sizeof (ipmgmt_get_rval_t);
756 /*
757 * We cannot use malloc() here because door_return never returns, and
758 * memory allocated by malloc() would get leaked. Use alloca() instead.
759 */
760 buf = alloca(buflen);
761 onvlbuf = buf + sizeof (ipmgmt_get_rval_t);
762 if ((err = nvlist_pack(cbarg.cb_onvl, &onvlbuf, &nvlsize,
763 NV_ENCODE_NATIVE, 0)) != 0) {
764 goto fail;
765 }
766 nvlist_free(cbarg.cb_invl);
767 nvlist_free(cbarg.cb_onvl);
768 rvalp = (ipmgmt_get_rval_t *)(void *)buf;
769 rvalp->ir_err = 0;
770 rvalp->ir_nvlsize = nvlsize;
771
772 (void) door_return(buf, buflen, NULL, 0);
773 return;
774 fail:
775 nvlist_free(cbarg.cb_invl);
776 nvlist_free(cbarg.cb_onvl);
777 rvalp->ir_err = err;
778 (void) door_return((char *)rvalp, sizeof (*rvalp), NULL, 0);
779 }
780
781 int
ipmgmt_persist_if(ipmgmt_if_arg_t * sargp)782 ipmgmt_persist_if(ipmgmt_if_arg_t *sargp)
783 {
784 ipadm_dbwrite_cbarg_t cb;
785 uint32_t flags = sargp->ia_flags;
786 nvlist_t *nvl = NULL;
787 char strval[IPMGMT_STRSIZE];
788 int err = 0;
789
790 if (!(flags & IPMGMT_PERSIST) || sargp->ia_family == AF_UNSPEC ||
791 sargp->ia_ifname[0] == '\0') {
792 err = EINVAL;
793 goto ret;
794 }
795 if ((err = nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0)) != 0)
796 goto ret;
797
798 if ((err = nvlist_add_string(nvl, IPADM_NVP_IFNAME,
799 sargp->ia_ifname)) != 0)
800 goto ret;
801
802 if ((err = ipmgmt_update_family_nvp(nvl, sargp->ia_family,
803 IPMGMT_APPEND)) != 0)
804 goto ret;
805
806 (void) snprintf(strval, IPMGMT_STRSIZE, "%d", sargp->ia_ifclass);
807 if ((err = nvlist_add_string(nvl, IPADM_NVP_IFCLASS, strval)) != 0)
808 goto ret;
809
810 cb.dbw_nvl = nvl;
811 cb.dbw_flags = IPMGMT_APPEND | IPMGMT_UPDATE_IF;
812 err = ipmgmt_db_walk(ipmgmt_db_update_if, &cb, IPADM_DB_WRITE);
813 ret:
814 nvlist_free(nvl);
815 return (err);
816 }
817
818 /*
819 * The helper for ipmgmt_getif_handler and ipmgmt_getaddr_handler
820 */
821 static void
ipmgmt_common_handler(char * if_name,char * aobj_name,db_wfunc_t worker)822 ipmgmt_common_handler(char *if_name, char *aobj_name, db_wfunc_t worker)
823 {
824 size_t buflen, onvlsize;
825 char *buf, *onvlbuf;
826 ipmgmt_get_cbarg_t cbarg;
827 ipmgmt_get_rval_t rval, *rvalp = &rval;
828 int err = 0;
829
830 cbarg.cb_ifname = if_name;
831 cbarg.cb_aobjname = aobj_name;
832 cbarg.cb_ocnt = 0;
833
834 if (nvlist_alloc(&cbarg.cb_onvl, NV_UNIQUE_NAME, 0) != 0)
835 goto fail;
836
837 err = ipmgmt_db_walk(worker, &cbarg, IPADM_DB_READ);
838 if (err == ENOENT && cbarg.cb_ocnt > 0) {
839 /*
840 * If there is at least one entry in the nvlist,
841 * do not return error.
842 */
843 err = 0;
844 }
845 if (err != 0)
846 goto fail;
847
848 if ((err = nvlist_size(cbarg.cb_onvl, &onvlsize,
849 NV_ENCODE_NATIVE)) != 0)
850 goto fail;
851
852 if (onvlsize > (UINT32_MAX - sizeof (ipmgmt_get_rval_t)))
853 goto fail;
854
855 buflen = onvlsize + sizeof (ipmgmt_get_rval_t);
856 /*
857 * We cannot use malloc() here because door_return never returns, and
858 * memory allocated by malloc() would get leaked. Use alloca() instead.
859 */
860 buf = alloca(buflen);
861 onvlbuf = buf + sizeof (ipmgmt_get_rval_t);
862 if ((err = nvlist_pack(cbarg.cb_onvl, &onvlbuf,
863 &onvlsize, NV_ENCODE_NATIVE, 0)) != 0)
864 goto fail;
865
866 nvlist_free(cbarg.cb_onvl);
867 rvalp = (ipmgmt_get_rval_t *)(void *)buf;
868 rvalp->ir_err = 0;
869 rvalp->ir_nvlsize = onvlsize;
870
871 (void) door_return(buf, buflen, NULL, 0);
872
873 fail:
874 nvlist_free(cbarg.cb_onvl);
875 rvalp->ir_err = err;
876 (void) door_return((char *)rvalp, sizeof (*rvalp), NULL, 0);
877 }
878
879 /*
880 * Handles the door command IPMGMT_CMD_IPMP_UPDATE
881 */
882 static void
ipmgmt_ipmp_update_handler(void * argp)883 ipmgmt_ipmp_update_handler(void *argp)
884 {
885 ipmgmt_ipmp_update_arg_t *uargp = argp;
886 ipmgmt_retval_t rval;
887 ipadm_dbwrite_cbarg_t cb;
888
889 boolean_t gif_exists;
890 char gifname[LIFNAMSIZ];
891 nvlist_t *nvl = NULL;
892 uint32_t flags = uargp->ia_flags;
893 int err = 0;
894
895 assert(uargp->ia_cmd == IPMGMT_CMD_IPMP_UPDATE);
896
897 gif_exists = ipmgmt_persist_if_exists(uargp->ia_gifname,
898 AF_UNSPEC);
899
900 if (!ipmgmt_persist_if_exists(uargp->ia_mifname, AF_UNSPEC)) {
901 err = EINVAL;
902 goto ret;
903 }
904
905 ipmgmt_get_group_interface(uargp->ia_mifname, gifname, LIFNAMSIZ);
906
907 if (flags & IPMGMT_APPEND) {
908 /* Group interface should be available in the DB */
909 if (!gif_exists) {
910 err = ENOENT;
911 goto ret;
912 }
913
914 if (gifname[0] != '\0') {
915 err = EEXIST;
916 goto ret;
917 }
918 }
919
920 if (flags & IPMGMT_REMOVE) {
921 /* We cannot remove something that does not exist */
922 if (!gif_exists || gifname[0] == '\0') {
923 err = ENOENT;
924 goto ret;
925 }
926 if (strcmp(uargp->ia_gifname, gifname) != 0) {
927 err = EINVAL;
928 goto ret;
929 }
930 }
931
932 if (flags & IPMGMT_PERSIST) {
933 if ((err = nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0)) != 0)
934 goto ret;
935
936 if ((err = nvlist_add_string(nvl, IPADM_NVP_IFNAME,
937 uargp->ia_gifname)) != 0)
938 goto ret;
939
940 if ((err = nvlist_add_string(nvl, IPADM_NVP_MIFNAMES,
941 uargp->ia_mifname)) != 0)
942 goto ret;
943
944 if ((err = nvlist_add_string(nvl, IPADM_NVP_GIFNAME,
945 uargp->ia_gifname)) != 0)
946 goto ret;
947
948 cb.dbw_nvl = nvl;
949 cb.dbw_flags = flags | IPMGMT_UPDATE_IF | IPMGMT_UPDATE_IPMP;
950 err = ipmgmt_db_walk(ipmgmt_db_update_if, &cb, IPADM_DB_WRITE);
951 }
952 ret:
953 nvlist_free(nvl);
954 rval.ir_err = err;
955 (void) door_return((char *)&rval, sizeof (rval), NULL, 0);
956 }
957