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1 /*
2 * Copyright (c) 2006-2011 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29 /*
30 * miscellaneous support functions for NFSv4
31 */
32 #include <sys/param.h>
33 #include <sys/proc.h>
34 #include <sys/kauth.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/mount_internal.h>
38 #include <sys/vnode_internal.h>
39 #include <sys/kpi_mbuf.h>
40 #include <sys/socket.h>
41 #include <sys/stat.h>
42 #include <sys/malloc.h>
43 #include <sys/syscall.h>
44 #include <sys/ubc_internal.h>
45 #include <sys/fcntl.h>
46 #include <sys/quota.h>
47 #include <sys/domain.h>
48 #include <libkern/OSAtomic.h>
49 #include <kern/thread_call.h>
50
51 #include <sys/vm.h>
52 #include <sys/vmparam.h>
53
54 #include <sys/time.h>
55 #include <kern/clock.h>
56
57 #include <nfs/rpcv2.h>
58 #include <nfs/nfsproto.h>
59 #include <nfs/nfs.h>
60 #include <nfs/nfsnode.h>
61 #include <nfs/xdr_subs.h>
62 #include <nfs/nfsm_subs.h>
63 #include <nfs/nfs_gss.h>
64 #include <nfs/nfsmount.h>
65 #include <nfs/nfs_lock.h>
66
67 #include <miscfs/specfs/specdev.h>
68
69 #include <netinet/in.h>
70 #include <net/kpi_interface.h>
71
72 /*
73 * NFS_MAX_WHO is the maximum length of a string representation used
74 * in as an ace who, owner, or group. There is no explicit limit in the
75 * protocol, however the kauth routines have a limit of MAPATHLEN for
76 * strings including the trailing null character, so we impose that
77 * limit. This should be changed if kauth routines change.
78 *
79 * We also want some reasonable maximum, as 32 bits worth of string length
80 * is liable to cause problems. At the very least this limit must guarantee
81 * that any express that contains the 32 bit length from off the wire used in
82 * allocations does not overflow.
83 */
84 #define NFS_MAX_WHO MAXPATHLEN
85
86 /*
87 * Create the unique client ID to use for this mount.
88 *
89 * Format: unique ID + en0_address + server_address + mntfromname + mntonname
90 *
91 * We could possibly use one client ID for all mounts of the same server;
92 * however, that would complicate some aspects of state management.
93 *
94 * Each mount socket connection sends a SETCLIENTID. If the ID is the same but
95 * the verifier (mounttime) changes, then all previous (mounts') state gets dropped.
96 *
97 * State is typically managed per-mount and in order to keep it that way
98 * each mount needs to use a separate client ID. However, we also need to
99 * make sure that each mount uses the same client ID each time.
100 *
101 * In an attempt to differentiate mounts we include the mntfromname and mntonname
102 * strings to the client ID (as long as they fit). We also make sure that the
103 * value does not conflict with any existing values in use (changing the unique ID).
104 *
105 * Note that info such as the server's address may change over the lifetime of the
106 * mount. But the client ID will not be updated because we don't want it changing
107 * simply because we switched to a different server address.
108 */
109 int
110 nfs4_init_clientid(struct nfsmount *nmp)
111 {
112 struct nfs_client_id *ncip, *ncip2;
113 struct sockaddr *saddr;
114 int error, len, len2, cmp;
115 struct vfsstatfs *vsfs;
116
117 static uint8_t en0addr[6];
118 static uint8_t en0addr_set = 0;
119
120 lck_mtx_lock(nfs_global_mutex);
121 if (!en0addr_set) {
122 ifnet_t interface = NULL;
123 error = ifnet_find_by_name("en0", &interface);
124 if (!error)
125 error = ifnet_lladdr_copy_bytes(interface, en0addr, sizeof(en0addr));
126 if (error)
127 printf("nfs4_init_clientid: error getting en0 address, %d\n", error);
128 if (!error)
129 en0addr_set = 1;
130 if (interface)
131 ifnet_release(interface);
132 }
133 lck_mtx_unlock(nfs_global_mutex);
134
135 MALLOC(ncip, struct nfs_client_id *, sizeof(struct nfs_client_id), M_TEMP, M_WAITOK);
136 if (!ncip)
137 return (ENOMEM);
138
139 vsfs = vfs_statfs(nmp->nm_mountp);
140 saddr = nmp->nm_saddr;
141 ncip->nci_idlen = sizeof(uint32_t) + sizeof(en0addr) + saddr->sa_len +
142 strlen(vsfs->f_mntfromname) + 1 + strlen(vsfs->f_mntonname) + 1;
143 if (ncip->nci_idlen > NFS4_OPAQUE_LIMIT)
144 ncip->nci_idlen = NFS4_OPAQUE_LIMIT;
145 MALLOC(ncip->nci_id, char *, ncip->nci_idlen, M_TEMP, M_WAITOK);
146 if (!ncip->nci_id) {
147 FREE(ncip, M_TEMP);
148 return (ENOMEM);
149 }
150
151 *(uint32_t*)ncip->nci_id = 0;
152 len = sizeof(uint32_t);
153 len2 = min(sizeof(en0addr), ncip->nci_idlen-len);
154 bcopy(en0addr, &ncip->nci_id[len], len2);
155 len += sizeof(en0addr);
156 len2 = min(saddr->sa_len, ncip->nci_idlen-len);
157 bcopy(saddr, &ncip->nci_id[len], len2);
158 len += len2;
159 if (len < ncip->nci_idlen) {
160 len2 = strlcpy(&ncip->nci_id[len], vsfs->f_mntfromname, ncip->nci_idlen-len);
161 if (len2 < (ncip->nci_idlen - len))
162 len += len2 + 1;
163 else
164 len = ncip->nci_idlen;
165 }
166 if (len < ncip->nci_idlen) {
167 len2 = strlcpy(&ncip->nci_id[len], vsfs->f_mntonname, ncip->nci_idlen-len);
168 if (len2 < (ncip->nci_idlen - len))
169 len += len2 + 1;
170 else
171 len = ncip->nci_idlen;
172 }
173
174 /* make sure the ID is unique, and add it to the sorted list */
175 lck_mtx_lock(nfs_global_mutex);
176 TAILQ_FOREACH(ncip2, &nfsclientids, nci_link) {
177 if (ncip->nci_idlen > ncip2->nci_idlen)
178 continue;
179 if (ncip->nci_idlen < ncip2->nci_idlen)
180 break;
181 cmp = bcmp(ncip->nci_id + sizeof(uint32_t),
182 ncip2->nci_id + sizeof(uint32_t),
183 ncip->nci_idlen - sizeof(uint32_t));
184 if (cmp > 0)
185 continue;
186 if (cmp < 0)
187 break;
188 if (*(uint32_t*)ncip->nci_id > *(uint32_t*)ncip2->nci_id)
189 continue;
190 if (*(uint32_t*)ncip->nci_id < *(uint32_t*)ncip2->nci_id)
191 break;
192 *(uint32_t*)ncip->nci_id += 1;
193 }
194 if (*(uint32_t*)ncip->nci_id)
195 printf("nfs client ID collision (%d) for %s on %s\n", *(uint32_t*)ncip->nci_id,
196 vsfs->f_mntfromname, vsfs->f_mntonname);
197 if (ncip2)
198 TAILQ_INSERT_BEFORE(ncip2, ncip, nci_link);
199 else
200 TAILQ_INSERT_TAIL(&nfsclientids, ncip, nci_link);
201 nmp->nm_longid = ncip;
202 lck_mtx_unlock(nfs_global_mutex);
203
204 return (0);
205 }
206
207 /*
208 * NFSv4 SETCLIENTID
209 */
210 int
211 nfs4_setclientid(struct nfsmount *nmp)
212 {
213 uint64_t verifier, xid;
214 int error = 0, status, numops;
215 uint32_t bitmap[NFS_ATTR_BITMAP_LEN];
216 thread_t thd;
217 kauth_cred_t cred;
218 struct nfsm_chain nmreq, nmrep;
219 struct sockaddr_storage ss;
220 void *sinaddr = NULL;
221 char raddr[MAX_IPv6_STR_LEN];
222 char uaddr[MAX_IPv6_STR_LEN+16];
223 int ualen = 0;
224 in_port_t port;
225
226 thd = current_thread();
227 cred = IS_VALID_CRED(nmp->nm_mcred) ? nmp->nm_mcred : vfs_context_ucred(vfs_context_kernel());
228 kauth_cred_ref(cred);
229
230 nfsm_chain_null(&nmreq);
231 nfsm_chain_null(&nmrep);
232
233 if (!nmp->nm_longid)
234 error = nfs4_init_clientid(nmp);
235
236 // SETCLIENTID
237 numops = 1;
238 nfsm_chain_build_alloc_init(error, &nmreq, 14 * NFSX_UNSIGNED + nmp->nm_longid->nci_idlen);
239 nfsm_chain_add_compound_header(error, &nmreq, "setclid", nmp->nm_minor_vers, numops);
240 numops--;
241 nfsm_chain_add_32(error, &nmreq, NFS_OP_SETCLIENTID);
242 /* nfs_client_id4 client; */
243 nfsm_chain_add_64(error, &nmreq, nmp->nm_mounttime);
244 nfsm_chain_add_32(error, &nmreq, nmp->nm_longid->nci_idlen);
245 nfsm_chain_add_opaque(error, &nmreq, nmp->nm_longid->nci_id, nmp->nm_longid->nci_idlen);
246 nfsmout_if(error);
247 /* cb_client4 callback; */
248 if (!NMFLAG(nmp, NOCALLBACK) && nmp->nm_cbid && nfs4_cb_port &&
249 !sock_getsockname(nmp->nm_nso->nso_so, (struct sockaddr*)&ss, sizeof(ss))) {
250 if (ss.ss_family == AF_INET) {
251 sinaddr = &((struct sockaddr_in*)&ss)->sin_addr;
252 port = nfs4_cb_port;
253 } else if (ss.ss_family == AF_INET6) {
254 sinaddr = &((struct sockaddr_in6*)&ss)->sin6_addr;
255 port = nfs4_cb_port6;
256 }
257 if (sinaddr && port && (inet_ntop(ss.ss_family, sinaddr, raddr, sizeof(raddr)) == raddr)) {
258 /* assemble r_addr = universal address (nmp->nm_nso->nso_so source IP addr + port) */
259 ualen = snprintf(uaddr, sizeof(uaddr), "%s.%d.%d", raddr,
260 ((port >> 8) & 0xff),
261 (port & 0xff));
262 /* make sure it fit, give up if it didn't */
263 if (ualen >= (int)sizeof(uaddr))
264 ualen = 0;
265 }
266 }
267 if (ualen > 0) {
268 /* add callback info */
269 nfsm_chain_add_32(error, &nmreq, NFS4_CALLBACK_PROG); /* callback program */
270 if (ss.ss_family == AF_INET)
271 nfsm_chain_add_string(error, &nmreq, "tcp", 3); /* callback r_netid */
272 else if (ss.ss_family == AF_INET6)
273 nfsm_chain_add_string(error, &nmreq, "tcp6", 4); /* callback r_netid */
274 nfsm_chain_add_string(error, &nmreq, uaddr, ualen); /* callback r_addr */
275 nfsm_chain_add_32(error, &nmreq, nmp->nm_cbid); /* callback_ident */
276 } else {
277 /* don't provide valid callback info */
278 nfsm_chain_add_32(error, &nmreq, 0); /* callback program */
279 nfsm_chain_add_string(error, &nmreq, "", 0); /* callback r_netid */
280 nfsm_chain_add_string(error, &nmreq, "", 0); /* callback r_addr */
281 nfsm_chain_add_32(error, &nmreq, 0); /* callback_ident */
282 }
283 nfsm_chain_build_done(error, &nmreq);
284 nfsm_assert(error, (numops == 0), EPROTO);
285 nfsmout_if(error);
286 error = nfs_request2(NULL, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND, thd, cred, NULL, R_SETUP, &nmrep, &xid, &status);
287 nfsm_chain_skip_tag(error, &nmrep);
288 nfsm_chain_get_32(error, &nmrep, numops);
289 if (!error && (numops != 1) && status)
290 error = status;
291 nfsm_chain_op_check(error, &nmrep, NFS_OP_SETCLIENTID);
292 if (error == NFSERR_CLID_INUSE)
293 printf("nfs4_setclientid: client ID in use?\n");
294 nfsmout_if(error);
295 nfsm_chain_get_64(error, &nmrep, nmp->nm_clientid);
296 nfsm_chain_get_64(error, &nmrep, verifier);
297 nfsm_chain_cleanup(&nmreq);
298 nfsm_chain_cleanup(&nmrep);
299
300 // SETCLIENTID_CONFIRM
301 numops = 1;
302 nfsm_chain_build_alloc_init(error, &nmreq, 15 * NFSX_UNSIGNED);
303 nfsm_chain_add_compound_header(error, &nmreq, "setclid_conf", nmp->nm_minor_vers, numops);
304 numops--;
305 nfsm_chain_add_32(error, &nmreq, NFS_OP_SETCLIENTID_CONFIRM);
306 nfsm_chain_add_64(error, &nmreq, nmp->nm_clientid);
307 nfsm_chain_add_64(error, &nmreq, verifier);
308 nfsm_chain_build_done(error, &nmreq);
309 nfsm_assert(error, (numops == 0), EPROTO);
310 nfsmout_if(error);
311 error = nfs_request2(NULL, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND, thd, cred, NULL, R_SETUP, &nmrep, &xid, &status);
312 nfsm_chain_skip_tag(error, &nmrep);
313 nfsm_chain_get_32(error, &nmrep, numops);
314 nfsm_chain_op_check(error, &nmrep, NFS_OP_SETCLIENTID_CONFIRM);
315 if (error)
316 printf("nfs4_setclientid: confirm error %d\n", error);
317 lck_mtx_lock(&nmp->nm_lock);
318 if (!error)
319 nmp->nm_state |= NFSSTA_CLIENTID;
320 lck_mtx_unlock(&nmp->nm_lock);
321
322 nfsmout_if(error || !nmp->nm_dnp);
323
324 /* take the opportunity to refresh fs attributes too */
325 // PUTFH, GETATTR(FS)
326 numops = 2;
327 nfsm_chain_build_alloc_init(error, &nmreq, 23 * NFSX_UNSIGNED);
328 nfsm_chain_add_compound_header(error, &nmreq, "setclid_attr", nmp->nm_minor_vers, numops);
329 numops--;
330 nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
331 nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, nmp->nm_dnp->n_fhp, nmp->nm_dnp->n_fhsize);
332 numops--;
333 nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
334 NFS_CLEAR_ATTRIBUTES(bitmap);
335 NFS4_PER_FS_ATTRIBUTES(bitmap);
336 nfsm_chain_add_bitmap(error, &nmreq, bitmap, NFS_ATTR_BITMAP_LEN);
337 nfsm_chain_build_done(error, &nmreq);
338 nfsm_assert(error, (numops == 0), EPROTO);
339 nfsmout_if(error);
340 error = nfs_request2(NULL, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND, thd, cred, NULL, R_SETUP, &nmrep, &xid, &status);
341 nfsm_chain_skip_tag(error, &nmrep);
342 nfsm_chain_get_32(error, &nmrep, numops);
343 lck_mtx_lock(&nmp->nm_lock);
344 nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
345 nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
346 if (!error)
347 error = nfs4_parsefattr(&nmrep, &nmp->nm_fsattr, NULL, NULL, NULL, NULL);
348 lck_mtx_unlock(&nmp->nm_lock);
349 if (error) /* ignore any error from the getattr */
350 error = 0;
351 nfsmout:
352 nfsm_chain_cleanup(&nmreq);
353 nfsm_chain_cleanup(&nmrep);
354 kauth_cred_unref(&cred);
355 if (error)
356 printf("nfs4_setclientid failed, %d\n", error);
357 return (error);
358 }
359
360 /*
361 * renew/check lease state on server
362 */
363 int
364 nfs4_renew(struct nfsmount *nmp, int rpcflag)
365 {
366 int error = 0, status, numops;
367 u_int64_t xid;
368 struct nfsm_chain nmreq, nmrep;
369 kauth_cred_t cred;
370
371 cred = IS_VALID_CRED(nmp->nm_mcred) ? nmp->nm_mcred : vfs_context_ucred(vfs_context_kernel());
372 kauth_cred_ref(cred);
373
374 nfsm_chain_null(&nmreq);
375 nfsm_chain_null(&nmrep);
376
377 // RENEW
378 numops = 1;
379 nfsm_chain_build_alloc_init(error, &nmreq, 8 * NFSX_UNSIGNED);
380 nfsm_chain_add_compound_header(error, &nmreq, "renew", nmp->nm_minor_vers, numops);
381 numops--;
382 nfsm_chain_add_32(error, &nmreq, NFS_OP_RENEW);
383 nfsm_chain_add_64(error, &nmreq, nmp->nm_clientid);
384 nfsm_chain_build_done(error, &nmreq);
385 nfsm_assert(error, (numops == 0), EPROTO);
386 nfsmout_if(error);
387 error = nfs_request2(NULL, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND,
388 current_thread(), cred, NULL, rpcflag, &nmrep, &xid, &status);
389 nfsm_chain_skip_tag(error, &nmrep);
390 nfsm_chain_get_32(error, &nmrep, numops);
391 nfsm_chain_op_check(error, &nmrep, NFS_OP_RENEW);
392 nfsmout:
393 nfsm_chain_cleanup(&nmreq);
394 nfsm_chain_cleanup(&nmrep);
395 kauth_cred_unref(&cred);
396 return (error);
397 }
398
399
400 /*
401 * periodic timer to renew lease state on server
402 */
403 void
404 nfs4_renew_timer(void *param0, __unused void *param1)
405 {
406 struct nfsmount *nmp = param0;
407 u_int64_t clientid;
408 int error = 0, interval;
409
410 lck_mtx_lock(&nmp->nm_lock);
411 clientid = nmp->nm_clientid;
412 if ((nmp->nm_state & NFSSTA_RECOVER) || !(nmp->nm_sockflags & NMSOCK_READY)) {
413 lck_mtx_unlock(&nmp->nm_lock);
414 goto out;
415 }
416 lck_mtx_unlock(&nmp->nm_lock);
417
418 error = nfs4_renew(nmp, R_RECOVER);
419 out:
420 if (error == ETIMEDOUT)
421 nfs_need_reconnect(nmp);
422 else if (error)
423 printf("nfs4_renew_timer: error %d\n", error);
424 lck_mtx_lock(&nmp->nm_lock);
425 if (error && (error != ETIMEDOUT) &&
426 (nmp->nm_clientid == clientid) && !(nmp->nm_state & NFSSTA_RECOVER)) {
427 printf("nfs4_renew_timer: error %d, initiating recovery\n", error);
428 nfs_need_recover(nmp, error);
429 }
430
431 interval = nmp->nm_fsattr.nfsa_lease / (error ? 4 : 2);
432 if ((interval < 1) || (nmp->nm_state & NFSSTA_RECOVER))
433 interval = 1;
434 lck_mtx_unlock(&nmp->nm_lock);
435 nfs_interval_timer_start(nmp->nm_renew_timer, interval * 1000);
436 }
437
438 /*
439 * get the list of supported security flavors
440 *
441 * How we get them depends on what args we are given:
442 *
443 * FH? Name? Action
444 * ----- ----- ------
445 * YES YES Use the fh and name provided
446 * YES NO 4.1-only just use the fh provided
447 * NO YES Use the node's (or root) fh and the name provided
448 * NO NO Use the node's parent and the node's name (4.1 will just use node's fh)
449 */
450 int
451 nfs4_secinfo_rpc(struct nfsmount *nmp, struct nfsreq_secinfo_args *siap, kauth_cred_t cred, uint32_t *sec, int *seccountp)
452 {
453 int error = 0, status, nfsvers, numops, namelen, fhsize;
454 vnode_t dvp = NULLVP;
455 nfsnode_t np, dnp;
456 u_char *fhp;
457 const char *vname = NULL, *name;
458 uint64_t xid;
459 struct nfsm_chain nmreq, nmrep;
460
461 *seccountp = 0;
462 if (nfs_mount_gone(nmp))
463 return (ENXIO);
464 nfsvers = nmp->nm_vers;
465 np = siap->rsia_np;
466
467 nfsm_chain_null(&nmreq);
468 nfsm_chain_null(&nmrep);
469
470 fhp = siap->rsia_fh;
471 fhsize = fhp ? siap->rsia_fhsize : 0;
472 name = siap->rsia_name;
473 namelen = name ? siap->rsia_namelen : 0;
474 if (name && !namelen)
475 namelen = strlen(name);
476 if (!fhp && name) {
477 if (!np) /* use PUTROOTFH */
478 goto gotargs;
479 fhp = np->n_fhp;
480 fhsize = np->n_fhsize;
481 }
482 if (fhp && name)
483 goto gotargs;
484
485 if (!np)
486 return (EIO);
487 nfs_node_lock_force(np);
488 if ((vnode_vtype(NFSTOV(np)) != VDIR) && np->n_sillyrename) {
489 /*
490 * The node's been sillyrenamed, so we need to use
491 * the sillyrename directory/name to do the open.
492 */
493 struct nfs_sillyrename *nsp = np->n_sillyrename;
494 dnp = nsp->nsr_dnp;
495 dvp = NFSTOV(dnp);
496 if ((error = vnode_get(dvp))) {
497 nfs_node_unlock(np);
498 goto nfsmout;
499 }
500 fhp = dnp->n_fhp;
501 fhsize = dnp->n_fhsize;
502 name = nsp->nsr_name;
503 namelen = nsp->nsr_namlen;
504 } else {
505 /*
506 * [sigh] We can't trust VFS to get the parent right for named
507 * attribute nodes. (It likes to reparent the nodes after we've
508 * created them.) Luckily we can probably get the right parent
509 * from the n_parent we have stashed away.
510 */
511 if ((np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR) &&
512 (((dvp = np->n_parent)) && (error = vnode_get(dvp))))
513 dvp = NULL;
514 if (!dvp)
515 dvp = vnode_getparent(NFSTOV(np));
516 vname = vnode_getname(NFSTOV(np));
517 if (!dvp || !vname) {
518 if (!error)
519 error = EIO;
520 nfs_node_unlock(np);
521 goto nfsmout;
522 }
523 dnp = VTONFS(dvp);
524 fhp = dnp->n_fhp;
525 fhsize = dnp->n_fhsize;
526 name = vname;
527 namelen = strnlen(vname, MAXPATHLEN);
528 }
529 nfs_node_unlock(np);
530
531 gotargs:
532 // PUT(ROOT)FH + SECINFO
533 numops = 2;
534 nfsm_chain_build_alloc_init(error, &nmreq,
535 4 * NFSX_UNSIGNED + NFSX_FH(nfsvers) + nfsm_rndup(namelen));
536 nfsm_chain_add_compound_header(error, &nmreq, "secinfo", nmp->nm_minor_vers, numops);
537 numops--;
538 if (fhp) {
539 nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
540 nfsm_chain_add_fh(error, &nmreq, nfsvers, fhp, fhsize);
541 } else {
542 nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTROOTFH);
543 }
544 numops--;
545 nfsm_chain_add_32(error, &nmreq, NFS_OP_SECINFO);
546 nfsm_chain_add_name(error, &nmreq, name, namelen, nmp);
547 nfsm_chain_build_done(error, &nmreq);
548 nfsm_assert(error, (numops == 0), EPROTO);
549 nfsmout_if(error);
550 error = nfs_request2(np, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND,
551 current_thread(), cred, NULL, 0, &nmrep, &xid, &status);
552 nfsm_chain_skip_tag(error, &nmrep);
553 nfsm_chain_get_32(error, &nmrep, numops);
554 nfsm_chain_op_check(error, &nmrep, fhp ? NFS_OP_PUTFH : NFS_OP_PUTROOTFH);
555 nfsm_chain_op_check(error, &nmrep, NFS_OP_SECINFO);
556 nfsmout_if(error);
557 error = nfsm_chain_get_secinfo(&nmrep, sec, seccountp);
558 nfsmout:
559 nfsm_chain_cleanup(&nmreq);
560 nfsm_chain_cleanup(&nmrep);
561 if (vname)
562 vnode_putname(vname);
563 if (dvp != NULLVP)
564 vnode_put(dvp);
565 return (error);
566 }
567
568 /*
569 * Parse an NFSv4 SECINFO array to an array of pseudo flavors.
570 * (Note: also works for MOUNTv3 security arrays.)
571 */
572 int
573 nfsm_chain_get_secinfo(struct nfsm_chain *nmc, uint32_t *sec, int *seccountp)
574 {
575 int error = 0, secmax, seccount, srvcount;
576 uint32_t flavor, val;
577 u_char oid[12];
578
579 seccount = srvcount = 0;
580 secmax = *seccountp;
581 *seccountp = 0;
582
583 nfsm_chain_get_32(error, nmc, srvcount);
584 while (!error && (srvcount > 0) && (seccount < secmax)) {
585 nfsm_chain_get_32(error, nmc, flavor);
586 nfsmout_if(error);
587 switch (flavor) {
588 case RPCAUTH_NONE:
589 case RPCAUTH_SYS:
590 case RPCAUTH_KRB5:
591 case RPCAUTH_KRB5I:
592 case RPCAUTH_KRB5P:
593 sec[seccount++] = flavor;
594 break;
595 case RPCSEC_GSS:
596 /* we only recognize KRB5, KRB5I, KRB5P */
597 nfsm_chain_get_32(error, nmc, val); /* OID length */
598 nfsmout_if(error);
599 if (val != sizeof(krb5_mech)) {
600 nfsm_chain_adv(error, nmc, val);
601 nfsm_chain_adv(error, nmc, 2*NFSX_UNSIGNED);
602 break;
603 }
604 nfsm_chain_get_opaque(error, nmc, val, oid); /* OID bytes */
605 nfsmout_if(error);
606 if (bcmp(oid, krb5_mech, sizeof(krb5_mech))) {
607 nfsm_chain_adv(error, nmc, 2*NFSX_UNSIGNED);
608 break;
609 }
610 nfsm_chain_get_32(error, nmc, val); /* QOP */
611 nfsm_chain_get_32(error, nmc, val); /* SERVICE */
612 nfsmout_if(error);
613 switch (val) {
614 case RPCSEC_GSS_SVC_NONE:
615 sec[seccount++] = RPCAUTH_KRB5;
616 break;
617 case RPCSEC_GSS_SVC_INTEGRITY:
618 sec[seccount++] = RPCAUTH_KRB5I;
619 break;
620 case RPCSEC_GSS_SVC_PRIVACY:
621 sec[seccount++] = RPCAUTH_KRB5P;
622 break;
623 }
624 break;
625 }
626 srvcount--;
627 }
628 nfsmout:
629 if (!error)
630 *seccountp = seccount;
631 return (error);
632 }
633
634
635 /*
636 * Fetch the FS_LOCATIONS attribute for the node found at directory/name.
637 */
638 int
639 nfs4_get_fs_locations(
640 struct nfsmount *nmp,
641 nfsnode_t dnp,
642 u_char *fhp,
643 int fhsize,
644 const char *name,
645 vfs_context_t ctx,
646 struct nfs_fs_locations *nfslsp)
647 {
648 int error = 0, numops, status;
649 uint32_t bitmap[NFS_ATTR_BITMAP_LEN];
650 struct nfsreq rq, *req = &rq;
651 struct nfsreq_secinfo_args si;
652 struct nfsm_chain nmreq, nmrep;
653 uint64_t xid;
654
655 if (!fhp && dnp) {
656 fhp = dnp->n_fhp;
657 fhsize = dnp->n_fhsize;
658 }
659 if (!fhp)
660 return (EINVAL);
661
662 nfsm_chain_null(&nmreq);
663 nfsm_chain_null(&nmrep);
664
665 NFSREQ_SECINFO_SET(&si, NULL, fhp, fhsize, name, 0);
666 numops = 3;
667 nfsm_chain_build_alloc_init(error, &nmreq, 18 * NFSX_UNSIGNED);
668 nfsm_chain_add_compound_header(error, &nmreq, "fs_locations", nmp->nm_minor_vers, numops);
669 numops--;
670 nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
671 nfsm_chain_add_fh(error, &nmreq, NFS_VER4, fhp, fhsize);
672 numops--;
673 nfsm_chain_add_32(error, &nmreq, NFS_OP_LOOKUP);
674 nfsm_chain_add_name(error, &nmreq, name, strlen(name), nmp);
675 numops--;
676 nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
677 NFS_CLEAR_ATTRIBUTES(bitmap);
678 NFS_BITMAP_SET(bitmap, NFS_FATTR_FS_LOCATIONS);
679 nfsm_chain_add_bitmap(error, &nmreq, bitmap, NFS_ATTR_BITMAP_LEN);
680 nfsm_chain_build_done(error, &nmreq);
681 nfsm_assert(error, (numops == 0), EPROTO);
682 nfsmout_if(error);
683 error = nfs_request_async(dnp, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND,
684 vfs_context_thread(ctx), vfs_context_ucred(ctx), &si, 0, NULL, &req);
685 if (!error)
686 error = nfs_request_async_finish(req, &nmrep, &xid, &status);
687 nfsm_chain_skip_tag(error, &nmrep);
688 nfsm_chain_get_32(error, &nmrep, numops);
689 nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
690 nfsm_chain_op_check(error, &nmrep, NFS_OP_LOOKUP);
691 nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
692 nfsmout_if(error);
693 error = nfs4_parsefattr(&nmrep, NULL, NULL, NULL, NULL, nfslsp);
694 nfsmout:
695 nfsm_chain_cleanup(&nmrep);
696 nfsm_chain_cleanup(&nmreq);
697 return (error);
698 }
699
700 /*
701 * Referral trigger nodes may not have many attributes provided by the
702 * server, so put some default values in place.
703 */
704 void
705 nfs4_default_attrs_for_referral_trigger(
706 nfsnode_t dnp,
707 char *name,
708 int namelen,
709 struct nfs_vattr *nvap,
710 fhandle_t *fhp)
711 {
712 struct timeval now;
713 microtime(&now);
714 int len;
715
716 nvap->nva_flags = NFS_FFLAG_TRIGGER | NFS_FFLAG_TRIGGER_REFERRAL;
717 if (!NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_TYPE)) {
718 NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_TYPE);
719 nvap->nva_type = VDIR;
720 }
721 if (!NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_FSID)) {
722 NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_FSID);
723 nvap->nva_fsid.major = 0;
724 nvap->nva_fsid.minor = 0;
725 }
726 if (!NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_OWNER) && dnp) {
727 NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_OWNER);
728 nvap->nva_uid = dnp->n_vattr.nva_uid;
729 nvap->nva_uuuid = dnp->n_vattr.nva_uuuid;
730 }
731 if (!NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_OWNER_GROUP) && dnp) {
732 NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_OWNER_GROUP);
733 nvap->nva_gid = dnp->n_vattr.nva_gid;
734 nvap->nva_guuid = dnp->n_vattr.nva_guuid;
735 }
736 if (!NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_MODE)) {
737 NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_MODE);
738 nvap->nva_mode = 0777;
739 }
740 if (!NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_SIZE)) {
741 NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_SIZE);
742 nvap->nva_size = 0;
743 }
744 if (!NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_SPACE_USED)) {
745 NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_SPACE_USED);
746 nvap->nva_bytes = 0;
747 }
748 if (!NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_NUMLINKS)) {
749 NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_NUMLINKS);
750 nvap->nva_nlink = 2;
751 }
752 if (!NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_TIME_ACCESS)) {
753 NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_TIME_ACCESS);
754 nvap->nva_timesec[NFSTIME_ACCESS] = now.tv_sec;
755 nvap->nva_timensec[NFSTIME_ACCESS] = now.tv_usec * 1000;
756 }
757 if (!NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_TIME_MODIFY)) {
758 NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_TIME_MODIFY);
759 nvap->nva_timesec[NFSTIME_MODIFY] = now.tv_sec;
760 nvap->nva_timensec[NFSTIME_MODIFY] = now.tv_usec * 1000;
761 }
762 if (!NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_TIME_METADATA)) {
763 NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_TIME_METADATA);
764 nvap->nva_timesec[NFSTIME_CHANGE] = now.tv_sec;
765 nvap->nva_timensec[NFSTIME_CHANGE] = now.tv_usec * 1000;
766 }
767 if (!NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_FILEID)) {
768 NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_FILEID);
769 nvap->nva_fileid = 42;
770 }
771 if (!NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_FILEHANDLE) && dnp && name && fhp) {
772 /* Build a fake filehandle made up of parent node pointer and name */
773 NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_FILEHANDLE);
774 bcopy(&dnp, &fhp->fh_data[0], sizeof(dnp));
775 len = sizeof(fhp->fh_data) - sizeof(dnp);
776 bcopy(name, &fhp->fh_data[0] + sizeof(dnp), MIN(len, namelen));
777 fhp->fh_len = sizeof(dnp) + namelen;
778 if (fhp->fh_len > (int)sizeof(fhp->fh_data))
779 fhp->fh_len = sizeof(fhp->fh_data);
780 }
781 }
782
783 /*
784 * Set NFS bitmap according to what's set in vnode_attr (and supported by the server).
785 */
786 void
787 nfs_vattr_set_bitmap(struct nfsmount *nmp, uint32_t *bitmap, struct vnode_attr *vap)
788 {
789 int i;
790
791 NFS_CLEAR_ATTRIBUTES(bitmap);
792 if (VATTR_IS_ACTIVE(vap, va_data_size))
793 NFS_BITMAP_SET(bitmap, NFS_FATTR_SIZE);
794 if (VATTR_IS_ACTIVE(vap, va_acl) && (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_ACL))
795 NFS_BITMAP_SET(bitmap, NFS_FATTR_ACL);
796 if (VATTR_IS_ACTIVE(vap, va_flags)) {
797 NFS_BITMAP_SET(bitmap, NFS_FATTR_ARCHIVE);
798 NFS_BITMAP_SET(bitmap, NFS_FATTR_HIDDEN);
799 }
800 // NFS_BITMAP_SET(bitmap, NFS_FATTR_MIMETYPE)
801 if (VATTR_IS_ACTIVE(vap, va_mode) && !NMFLAG(nmp, ACLONLY))
802 NFS_BITMAP_SET(bitmap, NFS_FATTR_MODE);
803 if (VATTR_IS_ACTIVE(vap, va_uid) || VATTR_IS_ACTIVE(vap, va_uuuid))
804 NFS_BITMAP_SET(bitmap, NFS_FATTR_OWNER);
805 if (VATTR_IS_ACTIVE(vap, va_gid) || VATTR_IS_ACTIVE(vap, va_guuid))
806 NFS_BITMAP_SET(bitmap, NFS_FATTR_OWNER_GROUP);
807 // NFS_BITMAP_SET(bitmap, NFS_FATTR_SYSTEM)
808 if (vap->va_vaflags & VA_UTIMES_NULL) {
809 NFS_BITMAP_SET(bitmap, NFS_FATTR_TIME_ACCESS_SET);
810 NFS_BITMAP_SET(bitmap, NFS_FATTR_TIME_MODIFY_SET);
811 } else {
812 if (VATTR_IS_ACTIVE(vap, va_access_time))
813 NFS_BITMAP_SET(bitmap, NFS_FATTR_TIME_ACCESS_SET);
814 if (VATTR_IS_ACTIVE(vap, va_modify_time))
815 NFS_BITMAP_SET(bitmap, NFS_FATTR_TIME_MODIFY_SET);
816 }
817 if (VATTR_IS_ACTIVE(vap, va_backup_time))
818 NFS_BITMAP_SET(bitmap, NFS_FATTR_TIME_BACKUP);
819 if (VATTR_IS_ACTIVE(vap, va_create_time))
820 NFS_BITMAP_SET(bitmap, NFS_FATTR_TIME_CREATE);
821 /* and limit to what is supported by server */
822 for (i=0; i < NFS_ATTR_BITMAP_LEN; i++)
823 bitmap[i] &= nmp->nm_fsattr.nfsa_supp_attr[i];
824 }
825
826 /*
827 * Convert between NFSv4 and VFS ACE types
828 */
829 uint32_t
830 nfs4_ace_nfstype_to_vfstype(uint32_t nfsacetype, int *errorp)
831 {
832 switch (nfsacetype) {
833 case NFS_ACE_ACCESS_ALLOWED_ACE_TYPE:
834 return KAUTH_ACE_PERMIT;
835 case NFS_ACE_ACCESS_DENIED_ACE_TYPE:
836 return KAUTH_ACE_DENY;
837 case NFS_ACE_SYSTEM_AUDIT_ACE_TYPE:
838 return KAUTH_ACE_AUDIT;
839 case NFS_ACE_SYSTEM_ALARM_ACE_TYPE:
840 return KAUTH_ACE_ALARM;
841 }
842 *errorp = EBADRPC;
843 return 0;
844 }
845
846 uint32_t
847 nfs4_ace_vfstype_to_nfstype(uint32_t vfstype, int *errorp)
848 {
849 switch (vfstype) {
850 case KAUTH_ACE_PERMIT:
851 return NFS_ACE_ACCESS_ALLOWED_ACE_TYPE;
852 case KAUTH_ACE_DENY:
853 return NFS_ACE_ACCESS_DENIED_ACE_TYPE;
854 case KAUTH_ACE_AUDIT:
855 return NFS_ACE_SYSTEM_AUDIT_ACE_TYPE;
856 case KAUTH_ACE_ALARM:
857 return NFS_ACE_SYSTEM_ALARM_ACE_TYPE;
858 }
859 *errorp = EINVAL;
860 return 0;
861 }
862
863 /*
864 * Convert between NFSv4 and VFS ACE flags
865 */
866 uint32_t
867 nfs4_ace_nfsflags_to_vfsflags(uint32_t nfsflags)
868 {
869 uint32_t vfsflags = 0;
870
871 if (nfsflags & NFS_ACE_FILE_INHERIT_ACE)
872 vfsflags |= KAUTH_ACE_FILE_INHERIT;
873 if (nfsflags & NFS_ACE_DIRECTORY_INHERIT_ACE)
874 vfsflags |= KAUTH_ACE_DIRECTORY_INHERIT;
875 if (nfsflags & NFS_ACE_NO_PROPAGATE_INHERIT_ACE)
876 vfsflags |= KAUTH_ACE_LIMIT_INHERIT;
877 if (nfsflags & NFS_ACE_INHERIT_ONLY_ACE)
878 vfsflags |= KAUTH_ACE_ONLY_INHERIT;
879 if (nfsflags & NFS_ACE_SUCCESSFUL_ACCESS_ACE_FLAG)
880 vfsflags |= KAUTH_ACE_SUCCESS;
881 if (nfsflags & NFS_ACE_FAILED_ACCESS_ACE_FLAG)
882 vfsflags |= KAUTH_ACE_FAILURE;
883 if (nfsflags & NFS_ACE_INHERITED_ACE)
884 vfsflags |= KAUTH_ACE_INHERITED;
885
886 return (vfsflags);
887 }
888
889 uint32_t
890 nfs4_ace_vfsflags_to_nfsflags(uint32_t vfsflags)
891 {
892 uint32_t nfsflags = 0;
893
894 if (vfsflags & KAUTH_ACE_FILE_INHERIT)
895 nfsflags |= NFS_ACE_FILE_INHERIT_ACE;
896 if (vfsflags & KAUTH_ACE_DIRECTORY_INHERIT)
897 nfsflags |= NFS_ACE_DIRECTORY_INHERIT_ACE;
898 if (vfsflags & KAUTH_ACE_LIMIT_INHERIT)
899 nfsflags |= NFS_ACE_NO_PROPAGATE_INHERIT_ACE;
900 if (vfsflags & KAUTH_ACE_ONLY_INHERIT)
901 nfsflags |= NFS_ACE_INHERIT_ONLY_ACE;
902 if (vfsflags & KAUTH_ACE_SUCCESS)
903 nfsflags |= NFS_ACE_SUCCESSFUL_ACCESS_ACE_FLAG;
904 if (vfsflags & KAUTH_ACE_FAILURE)
905 nfsflags |= NFS_ACE_FAILED_ACCESS_ACE_FLAG;
906 if (vfsflags & KAUTH_ACE_INHERITED)
907 nfsflags |= NFS_ACE_INHERITED_ACE;
908
909 return (nfsflags);
910 }
911
912 /*
913 * Convert between NFSv4 ACE access masks and VFS access rights
914 */
915 uint32_t
916 nfs4_ace_nfsmask_to_vfsrights(uint32_t nfsmask)
917 {
918 uint32_t vfsrights = 0;
919
920 if (nfsmask & NFS_ACE_READ_DATA)
921 vfsrights |= KAUTH_VNODE_READ_DATA;
922 if (nfsmask & NFS_ACE_LIST_DIRECTORY)
923 vfsrights |= KAUTH_VNODE_LIST_DIRECTORY;
924 if (nfsmask & NFS_ACE_WRITE_DATA)
925 vfsrights |= KAUTH_VNODE_WRITE_DATA;
926 if (nfsmask & NFS_ACE_ADD_FILE)
927 vfsrights |= KAUTH_VNODE_ADD_FILE;
928 if (nfsmask & NFS_ACE_APPEND_DATA)
929 vfsrights |= KAUTH_VNODE_APPEND_DATA;
930 if (nfsmask & NFS_ACE_ADD_SUBDIRECTORY)
931 vfsrights |= KAUTH_VNODE_ADD_SUBDIRECTORY;
932 if (nfsmask & NFS_ACE_READ_NAMED_ATTRS)
933 vfsrights |= KAUTH_VNODE_READ_EXTATTRIBUTES;
934 if (nfsmask & NFS_ACE_WRITE_NAMED_ATTRS)
935 vfsrights |= KAUTH_VNODE_WRITE_EXTATTRIBUTES;
936 if (nfsmask & NFS_ACE_EXECUTE)
937 vfsrights |= KAUTH_VNODE_EXECUTE;
938 if (nfsmask & NFS_ACE_DELETE_CHILD)
939 vfsrights |= KAUTH_VNODE_DELETE_CHILD;
940 if (nfsmask & NFS_ACE_READ_ATTRIBUTES)
941 vfsrights |= KAUTH_VNODE_READ_ATTRIBUTES;
942 if (nfsmask & NFS_ACE_WRITE_ATTRIBUTES)
943 vfsrights |= KAUTH_VNODE_WRITE_ATTRIBUTES;
944 if (nfsmask & NFS_ACE_DELETE)
945 vfsrights |= KAUTH_VNODE_DELETE;
946 if (nfsmask & NFS_ACE_READ_ACL)
947 vfsrights |= KAUTH_VNODE_READ_SECURITY;
948 if (nfsmask & NFS_ACE_WRITE_ACL)
949 vfsrights |= KAUTH_VNODE_WRITE_SECURITY;
950 if (nfsmask & NFS_ACE_WRITE_OWNER)
951 vfsrights |= KAUTH_VNODE_CHANGE_OWNER;
952 if (nfsmask & NFS_ACE_SYNCHRONIZE)
953 vfsrights |= KAUTH_VNODE_SYNCHRONIZE;
954 if ((nfsmask & NFS_ACE_GENERIC_READ) == NFS_ACE_GENERIC_READ)
955 vfsrights |= KAUTH_ACE_GENERIC_READ;
956 if ((nfsmask & NFS_ACE_GENERIC_WRITE) == NFS_ACE_GENERIC_WRITE)
957 vfsrights |= KAUTH_ACE_GENERIC_WRITE;
958 if ((nfsmask & NFS_ACE_GENERIC_EXECUTE) == NFS_ACE_GENERIC_EXECUTE)
959 vfsrights |= KAUTH_ACE_GENERIC_EXECUTE;
960
961 return (vfsrights);
962 }
963
964 uint32_t
965 nfs4_ace_vfsrights_to_nfsmask(uint32_t vfsrights)
966 {
967 uint32_t nfsmask = 0;
968
969 if (vfsrights & KAUTH_VNODE_READ_DATA)
970 nfsmask |= NFS_ACE_READ_DATA;
971 if (vfsrights & KAUTH_VNODE_LIST_DIRECTORY)
972 nfsmask |= NFS_ACE_LIST_DIRECTORY;
973 if (vfsrights & KAUTH_VNODE_WRITE_DATA)
974 nfsmask |= NFS_ACE_WRITE_DATA;
975 if (vfsrights & KAUTH_VNODE_ADD_FILE)
976 nfsmask |= NFS_ACE_ADD_FILE;
977 if (vfsrights & KAUTH_VNODE_APPEND_DATA)
978 nfsmask |= NFS_ACE_APPEND_DATA;
979 if (vfsrights & KAUTH_VNODE_ADD_SUBDIRECTORY)
980 nfsmask |= NFS_ACE_ADD_SUBDIRECTORY;
981 if (vfsrights & KAUTH_VNODE_READ_EXTATTRIBUTES)
982 nfsmask |= NFS_ACE_READ_NAMED_ATTRS;
983 if (vfsrights & KAUTH_VNODE_WRITE_EXTATTRIBUTES)
984 nfsmask |= NFS_ACE_WRITE_NAMED_ATTRS;
985 if (vfsrights & KAUTH_VNODE_EXECUTE)
986 nfsmask |= NFS_ACE_EXECUTE;
987 if (vfsrights & KAUTH_VNODE_DELETE_CHILD)
988 nfsmask |= NFS_ACE_DELETE_CHILD;
989 if (vfsrights & KAUTH_VNODE_READ_ATTRIBUTES)
990 nfsmask |= NFS_ACE_READ_ATTRIBUTES;
991 if (vfsrights & KAUTH_VNODE_WRITE_ATTRIBUTES)
992 nfsmask |= NFS_ACE_WRITE_ATTRIBUTES;
993 if (vfsrights & KAUTH_VNODE_DELETE)
994 nfsmask |= NFS_ACE_DELETE;
995 if (vfsrights & KAUTH_VNODE_READ_SECURITY)
996 nfsmask |= NFS_ACE_READ_ACL;
997 if (vfsrights & KAUTH_VNODE_WRITE_SECURITY)
998 nfsmask |= NFS_ACE_WRITE_ACL;
999 if (vfsrights & KAUTH_VNODE_CHANGE_OWNER)
1000 nfsmask |= NFS_ACE_WRITE_OWNER;
1001 if (vfsrights & KAUTH_VNODE_SYNCHRONIZE)
1002 nfsmask |= NFS_ACE_SYNCHRONIZE;
1003 if (vfsrights & KAUTH_ACE_GENERIC_READ)
1004 nfsmask |= NFS_ACE_GENERIC_READ;
1005 if (vfsrights & KAUTH_ACE_GENERIC_WRITE)
1006 nfsmask |= NFS_ACE_GENERIC_WRITE;
1007 if (vfsrights & KAUTH_ACE_GENERIC_EXECUTE)
1008 nfsmask |= NFS_ACE_GENERIC_EXECUTE;
1009 if (vfsrights & KAUTH_ACE_GENERIC_ALL)
1010 nfsmask |= (KAUTH_ACE_GENERIC_READ|KAUTH_ACE_GENERIC_WRITE|NFS_ACE_GENERIC_EXECUTE);
1011
1012 return (nfsmask);
1013 }
1014
1015 /*
1016 * Map an NFSv4 ID string to a VFS guid.
1017 *
1018 * Try to use the ID mapping service... but we may fallback to trying to do it ourselves.
1019 */
1020 int
1021 nfs4_id2guid(/*const*/ char *id, guid_t *guidp, int isgroup)
1022 {
1023 int error1 = 0, error = 0, compare;
1024 guid_t guid1, guid2, *gp;
1025 ntsid_t sid;
1026 long num, unknown;
1027 const char *p, *at;
1028
1029 *guidp = kauth_null_guid;
1030 compare = ((nfs_idmap_ctrl & NFS_IDMAP_CTRL_USE_IDMAP_SERVICE) &&
1031 (nfs_idmap_ctrl & NFS_IDMAP_CTRL_COMPARE_RESULTS));
1032 unknown = (nfs_idmap_ctrl & NFS_IDMAP_CTRL_UNKNOWN_IS_99) ? 99 : -2;
1033
1034 /*
1035 * First check if it is just a simple numeric ID string or a special "XXX@" name.
1036 * If it's a number, there's no need trying to ask the IDMAP service to map it.
1037 * If it's a special "XXX@" name, we want to make sure to treat it as a group.
1038 */
1039 num = 1;
1040 at = NULL;
1041 p = id;
1042 while (*p) {
1043 if ((*p < '0') || (*p > '9'))
1044 num = 0;
1045 if (*p == '@')
1046 at = p;
1047 p++;
1048 }
1049 if (at && !at[1] && !isgroup)
1050 isgroup = 1; /* special "XXX@" names should always be treated as groups */
1051 if (num) {
1052 /* must be numeric ID (or empty) */
1053 num = *id ? strtol(id, NULL, 10) : unknown;
1054 gp = guidp;
1055 goto gotnumid;
1056 }
1057
1058 if (nfs_idmap_ctrl & NFS_IDMAP_CTRL_USE_IDMAP_SERVICE) {
1059 /*
1060 * Ask the ID mapping service to map the ID string to a GUID.
1061 *
1062 * [sigh] this isn't a "pwnam/grnam" it's an NFS ID string!
1063 */
1064 gp = compare ? &guid1 : guidp;
1065 if (isgroup)
1066 error = kauth_cred_grnam2guid(id, gp);
1067 else
1068 error = kauth_cred_pwnam2guid(id, gp);
1069 if (error && (nfs_idmap_ctrl & NFS_IDMAP_CTRL_LOG_FAILED_MAPPINGS))
1070 printf("nfs4_id2guid: idmap failed for %s %s error %d\n", id, isgroup ? "G" : " ", error);
1071 if (!error && (nfs_idmap_ctrl & NFS_IDMAP_CTRL_LOG_SUCCESSFUL_MAPPINGS))
1072 printf("nfs4_id2guid: idmap for %s %s got guid "
1073 "%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x\n",
1074 id, isgroup ? "G" : " ",
1075 gp->g_guid[0], gp->g_guid[1], gp->g_guid[2], gp->g_guid[3],
1076 gp->g_guid[4], gp->g_guid[5], gp->g_guid[6], gp->g_guid[7],
1077 gp->g_guid[8], gp->g_guid[9], gp->g_guid[10], gp->g_guid[11],
1078 gp->g_guid[12], gp->g_guid[13], gp->g_guid[14], gp->g_guid[15]);
1079 error1 = error;
1080 }
1081 if (error || compare || !(nfs_idmap_ctrl & NFS_IDMAP_CTRL_USE_IDMAP_SERVICE)) {
1082 /*
1083 * fallback path... see if we can come up with an answer ourselves.
1084 */
1085 gp = compare ? &guid2 : guidp;
1086
1087 if (!(nfs_idmap_ctrl & NFS_IDMAP_CTRL_FALLBACK_NO_WELLKNOWN_IDS) && at && !at[1]) {
1088 /* must be a special ACE "who" ID */
1089 bzero(&sid, sizeof(sid));
1090 sid.sid_kind = 1;
1091 sid.sid_authcount = 1;
1092 if (!strcmp(id, "OWNER@")) {
1093 // S-1-3-0
1094 sid.sid_authority[5] = 3;
1095 sid.sid_authorities[0] = 0;
1096 } else if (!strcmp(id, "GROUP@")) {
1097 // S-1-3-1
1098 sid.sid_authority[5] = 3;
1099 sid.sid_authorities[0] = 1;
1100 } else if (!strcmp(id, "EVERYONE@")) {
1101 // S-1-1-0
1102 sid.sid_authority[5] = 1;
1103 sid.sid_authorities[0] = 0;
1104 } else if (!strcmp(id, "INTERACTIVE@")) {
1105 // S-1-5-4
1106 sid.sid_authority[5] = 5;
1107 sid.sid_authorities[0] = 4;
1108 } else if (!strcmp(id, "NETWORK@")) {
1109 // S-1-5-2
1110 sid.sid_authority[5] = 5;
1111 sid.sid_authorities[0] = 2;
1112 } else if (!strcmp(id, "DIALUP@")) {
1113 // S-1-5-1
1114 sid.sid_authority[5] = 5;
1115 sid.sid_authorities[0] = 1;
1116 } else if (!strcmp(id, "BATCH@")) {
1117 // S-1-5-3
1118 sid.sid_authority[5] = 5;
1119 sid.sid_authorities[0] = 3;
1120 } else if (!strcmp(id, "ANONYMOUS@")) {
1121 // S-1-5-7
1122 sid.sid_authority[5] = 5;
1123 sid.sid_authorities[0] = 7;
1124 } else if (!strcmp(id, "AUTHENTICATED@")) {
1125 // S-1-5-11
1126 sid.sid_authority[5] = 5;
1127 sid.sid_authorities[0] = 11;
1128 } else if (!strcmp(id, "SERVICE@")) {
1129 // S-1-5-6
1130 sid.sid_authority[5] = 5;
1131 sid.sid_authorities[0] = 6;
1132 } else {
1133 // S-1-0-0 "NOBODY"
1134 sid.sid_authority[5] = 0;
1135 sid.sid_authorities[0] = 0;
1136 }
1137 error = kauth_cred_ntsid2guid(&sid, gp);
1138 } else {
1139 if (!(nfs_idmap_ctrl & NFS_IDMAP_CTRL_FALLBACK_NO_COMMON_IDS) && at) {
1140 /* must be user@domain */
1141 /* try to identify some well-known IDs */
1142 if (!strncmp(id, "root@", 5))
1143 num = 0;
1144 else if (!strncmp(id, "wheel@", 6))
1145 num = 0;
1146 else if (!strncmp(id, "nobody@", 7))
1147 num = -2;
1148 else if (!strncmp(id, "nfsnobody@", 10))
1149 num = -2;
1150 else
1151 num = unknown;
1152 } else if (!(nfs_idmap_ctrl & NFS_IDMAP_CTRL_FALLBACK_NO_COMMON_IDS) && !strcmp(id, "nobody")) {
1153 num = -2;
1154 } else {
1155 num = unknown;
1156 }
1157 gotnumid:
1158 if (isgroup)
1159 error = kauth_cred_gid2guid((gid_t)num, gp);
1160 else
1161 error = kauth_cred_uid2guid((uid_t)num, gp);
1162 }
1163 if (error && (nfs_idmap_ctrl & NFS_IDMAP_CTRL_LOG_FAILED_MAPPINGS))
1164 printf("nfs4_id2guid: fallback map failed for %s %s error %d\n", id, isgroup ? "G" : " ", error);
1165 if (!error && (nfs_idmap_ctrl & NFS_IDMAP_CTRL_LOG_SUCCESSFUL_MAPPINGS))
1166 printf("nfs4_id2guid: fallback map for %s %s got guid "
1167 "%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x\n",
1168 id, isgroup ? "G" : " ",
1169 gp->g_guid[0], gp->g_guid[1], gp->g_guid[2], gp->g_guid[3],
1170 gp->g_guid[4], gp->g_guid[5], gp->g_guid[6], gp->g_guid[7],
1171 gp->g_guid[8], gp->g_guid[9], gp->g_guid[10], gp->g_guid[11],
1172 gp->g_guid[12], gp->g_guid[13], gp->g_guid[14], gp->g_guid[15]);
1173 }
1174
1175 if (compare) {
1176 /* compare the results, log if different */
1177 if (!error1 && !error) {
1178 if (!kauth_guid_equal(&guid1, &guid2))
1179 printf("nfs4_id2guid: idmap/fallback results differ for %s %s - "
1180 "idmap %02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x "
1181 "fallback %02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x\n",
1182 id, isgroup ? "G" : " ",
1183 guid1.g_guid[0], guid1.g_guid[1], guid1.g_guid[2], guid1.g_guid[3],
1184 guid1.g_guid[4], guid1.g_guid[5], guid1.g_guid[6], guid1.g_guid[7],
1185 guid1.g_guid[8], guid1.g_guid[9], guid1.g_guid[10], guid1.g_guid[11],
1186 guid1.g_guid[12], guid1.g_guid[13], guid1.g_guid[14], guid1.g_guid[15],
1187 guid2.g_guid[0], guid2.g_guid[1], guid2.g_guid[2], guid2.g_guid[3],
1188 guid2.g_guid[4], guid2.g_guid[5], guid2.g_guid[6], guid2.g_guid[7],
1189 guid2.g_guid[8], guid2.g_guid[9], guid2.g_guid[10], guid2.g_guid[11],
1190 guid2.g_guid[12], guid2.g_guid[13], guid2.g_guid[14], guid2.g_guid[15]);
1191 /* copy idmap result to output guid */
1192 *guidp = guid1;
1193 } else if (error1 && !error) {
1194 printf("nfs4_id2guid: idmap/fallback results differ for %s %s - "
1195 "idmap error %d "
1196 "fallback %02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x\n",
1197 id, isgroup ? "G" : " ",
1198 error1,
1199 guid2.g_guid[0], guid2.g_guid[1], guid2.g_guid[2], guid2.g_guid[3],
1200 guid2.g_guid[4], guid2.g_guid[5], guid2.g_guid[6], guid2.g_guid[7],
1201 guid2.g_guid[8], guid2.g_guid[9], guid2.g_guid[10], guid2.g_guid[11],
1202 guid2.g_guid[12], guid2.g_guid[13], guid2.g_guid[14], guid2.g_guid[15]);
1203 /* copy fallback result to output guid */
1204 *guidp = guid2;
1205 } else if (!error1 && error) {
1206 printf("nfs4_id2guid: idmap/fallback results differ for %s %s - "
1207 "idmap %02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x "
1208 "fallback error %d\n",
1209 id, isgroup ? "G" : " ",
1210 guid1.g_guid[0], guid1.g_guid[1], guid1.g_guid[2], guid1.g_guid[3],
1211 guid1.g_guid[4], guid1.g_guid[5], guid1.g_guid[6], guid1.g_guid[7],
1212 guid1.g_guid[8], guid1.g_guid[9], guid1.g_guid[10], guid1.g_guid[11],
1213 guid1.g_guid[12], guid1.g_guid[13], guid1.g_guid[14], guid1.g_guid[15],
1214 error);
1215 /* copy idmap result to output guid */
1216 *guidp = guid1;
1217 error = 0;
1218 } else {
1219 if (error1 != error)
1220 printf("nfs4_id2guid: idmap/fallback results differ for %s %s - "
1221 "idmap error %d fallback error %d\n",
1222 id, isgroup ? "G" : " ", error1, error);
1223 }
1224 }
1225
1226 return (error);
1227 }
1228
1229 /*
1230 * Map a VFS guid to an NFSv4 ID string.
1231 *
1232 * Try to use the ID mapping service... but we may fallback to trying to do it ourselves.
1233 */
1234 int
1235 nfs4_guid2id(guid_t *guidp, char *id, int *idlen, int isgroup)
1236 {
1237 int error1 = 0, error = 0, compare;
1238 int id1len, id2len, len;
1239 char *id1buf, *id1;
1240 char numbuf[32];
1241 const char *id2 = NULL;
1242
1243 id1buf = id1 = NULL;
1244 id1len = id2len = 0;
1245 compare = ((nfs_idmap_ctrl & NFS_IDMAP_CTRL_USE_IDMAP_SERVICE) &&
1246 (nfs_idmap_ctrl & NFS_IDMAP_CTRL_COMPARE_RESULTS));
1247
1248 if (nfs_idmap_ctrl & NFS_IDMAP_CTRL_USE_IDMAP_SERVICE) {
1249 /*
1250 * Ask the ID mapping service to map the GUID to an ID string.
1251 *
1252 * [sigh] this isn't a "pwnam" it's an NFS id string!
1253 */
1254
1255 /*
1256 * Stupid kauth_cred_guid2pwnam() function requires that the buffer
1257 * be at least MAXPATHLEN bytes long even though most if not all ID
1258 * strings will be much much shorter than that.
1259 */
1260 if (compare || (*idlen < MAXPATHLEN)) {
1261 MALLOC_ZONE(id1buf, char*, MAXPATHLEN, M_NAMEI, M_WAITOK);
1262 if (!id1buf)
1263 return (ENOMEM);
1264 id1 = id1buf;
1265 id1len = MAXPATHLEN;
1266 } else {
1267 id1 = id;
1268 id1len = *idlen;
1269 }
1270
1271 if (isgroup)
1272 error = kauth_cred_guid2grnam(guidp, id1);
1273 else
1274 error = kauth_cred_guid2pwnam(guidp, id1);
1275 if (error && (nfs_idmap_ctrl & NFS_IDMAP_CTRL_LOG_FAILED_MAPPINGS))
1276 printf("nfs4_guid2id: idmap failed for "
1277 "%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x %s "
1278 "error %d\n",
1279 guidp->g_guid[0], guidp->g_guid[1], guidp->g_guid[2], guidp->g_guid[3],
1280 guidp->g_guid[4], guidp->g_guid[5], guidp->g_guid[6], guidp->g_guid[7],
1281 guidp->g_guid[8], guidp->g_guid[9], guidp->g_guid[10], guidp->g_guid[11],
1282 guidp->g_guid[12], guidp->g_guid[13], guidp->g_guid[14], guidp->g_guid[15],
1283 isgroup ? "G" : " ", error);
1284 if (!error && (nfs_idmap_ctrl & NFS_IDMAP_CTRL_LOG_SUCCESSFUL_MAPPINGS))
1285 printf("nfs4_guid2id: idmap for "
1286 "%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x %s "
1287 "got ID %s\n",
1288 guidp->g_guid[0], guidp->g_guid[1], guidp->g_guid[2], guidp->g_guid[3],
1289 guidp->g_guid[4], guidp->g_guid[5], guidp->g_guid[6], guidp->g_guid[7],
1290 guidp->g_guid[8], guidp->g_guid[9], guidp->g_guid[10], guidp->g_guid[11],
1291 guidp->g_guid[12], guidp->g_guid[13], guidp->g_guid[14], guidp->g_guid[15],
1292 isgroup ? "G" : " ", id1);
1293 error1 = error;
1294 if (!error) {
1295 if (compare) {
1296 id1len = strnlen(id1, id1len);
1297 } else if (id1 == id1buf) {
1298 /* copy idmap result to output buffer */
1299 len = strlcpy(id, id1, *idlen);
1300 if (len >= *idlen)
1301 error = ENOSPC;
1302 else
1303 *idlen = len;
1304 }
1305 }
1306 }
1307 if (error || compare || !(nfs_idmap_ctrl & NFS_IDMAP_CTRL_USE_IDMAP_SERVICE)) {
1308 /*
1309 * fallback path... see if we can come up with an answer ourselves.
1310 */
1311 ntsid_t sid;
1312 uid_t uid;
1313
1314 if (!(nfs_idmap_ctrl & NFS_IDMAP_CTRL_FALLBACK_NO_WELLKNOWN_IDS)) {
1315 error = kauth_cred_guid2ntsid(guidp, &sid);
1316 if (!error && (sid.sid_kind == 1) && (sid.sid_authcount == 1)) {
1317 /* check if it's one of our well-known ACE WHO names */
1318 if (sid.sid_authority[5] == 0) {
1319 if (sid.sid_authorities[0] == 0) // S-1-0-0
1320 id2 = "nobody@localdomain";
1321 } else if (sid.sid_authority[5] == 1) {
1322 if (sid.sid_authorities[0] == 0) // S-1-1-0
1323 id2 = "EVERYONE@";
1324 } else if (sid.sid_authority[5] == 3) {
1325 if (sid.sid_authorities[0] == 0) // S-1-3-0
1326 id2 = "OWNER@";
1327 else if (sid.sid_authorities[0] == 1) // S-1-3-1
1328 id2 = "GROUP@";
1329 } else if (sid.sid_authority[5] == 5) {
1330 if (sid.sid_authorities[0] == ntohl(1)) // S-1-5-1
1331 id2 = "DIALUP@";
1332 else if (sid.sid_authorities[0] == ntohl(2)) // S-1-5-2
1333 id2 = "NETWORK@";
1334 else if (sid.sid_authorities[0] == ntohl(3)) // S-1-5-3
1335 id2 = "BATCH@";
1336 else if (sid.sid_authorities[0] == ntohl(4)) // S-1-5-4
1337 id2 = "INTERACTIVE@";
1338 else if (sid.sid_authorities[0] == ntohl(6)) // S-1-5-6
1339 id2 = "SERVICE@";
1340 else if (sid.sid_authorities[0] == ntohl(7)) // S-1-5-7
1341 id2 = "ANONYMOUS@";
1342 else if (sid.sid_authorities[0] == ntohl(11)) // S-1-5-11
1343 id2 = "AUTHENTICATED@";
1344 }
1345 }
1346 }
1347 if (!id2) {
1348 /* OK, let's just try mapping it to a UID/GID */
1349 if (isgroup)
1350 error = kauth_cred_guid2gid(guidp, (gid_t*)&uid);
1351 else
1352 error = kauth_cred_guid2uid(guidp, &uid);
1353 if (!error) {
1354 if (!(nfs_idmap_ctrl & NFS_IDMAP_CTRL_FALLBACK_NO_COMMON_IDS)) {
1355 /* map well known uid's to strings */
1356 if (uid == 0)
1357 id2 = isgroup ? "wheel@localdomain" : "root@localdomain";
1358 else if (uid == (uid_t)-2)
1359 id2 = "nobody@localdomain";
1360 }
1361 if (!id2) {
1362 /* or just use a decimal number string. */
1363 snprintf(numbuf, sizeof(numbuf), "%d", uid);
1364 id2 = numbuf;
1365 }
1366 }
1367 }
1368 if (error && (nfs_idmap_ctrl & NFS_IDMAP_CTRL_LOG_FAILED_MAPPINGS))
1369 printf("nfs4_guid2id: fallback map failed for "
1370 "%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x %s "
1371 "error %d\n",
1372 guidp->g_guid[0], guidp->g_guid[1], guidp->g_guid[2], guidp->g_guid[3],
1373 guidp->g_guid[4], guidp->g_guid[5], guidp->g_guid[6], guidp->g_guid[7],
1374 guidp->g_guid[8], guidp->g_guid[9], guidp->g_guid[10], guidp->g_guid[11],
1375 guidp->g_guid[12], guidp->g_guid[13], guidp->g_guid[14], guidp->g_guid[15],
1376 isgroup ? "G" : " ", error);
1377 if (!error && (nfs_idmap_ctrl & NFS_IDMAP_CTRL_LOG_SUCCESSFUL_MAPPINGS))
1378 printf("nfs4_guid2id: fallback map for "
1379 "%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x %s "
1380 "got ID %s\n",
1381 guidp->g_guid[0], guidp->g_guid[1], guidp->g_guid[2], guidp->g_guid[3],
1382 guidp->g_guid[4], guidp->g_guid[5], guidp->g_guid[6], guidp->g_guid[7],
1383 guidp->g_guid[8], guidp->g_guid[9], guidp->g_guid[10], guidp->g_guid[11],
1384 guidp->g_guid[12], guidp->g_guid[13], guidp->g_guid[14], guidp->g_guid[15],
1385 isgroup ? "G" : " ", id2);
1386 if (!error && id2) {
1387 if (compare) {
1388 id2len = strnlen(id2, MAXPATHLEN);
1389 } else {
1390 /* copy fallback result to output buffer */
1391 len = strlcpy(id, id2, *idlen);
1392 if (len >= *idlen)
1393 error = ENOSPC;
1394 else
1395 *idlen = len;
1396 }
1397 }
1398 }
1399
1400 if (compare) {
1401 /* compare the results, log if different */
1402 if (!error1 && !error) {
1403 if ((id1len != id2len) || strncmp(id1, id2, id1len))
1404 printf("nfs4_guid2id: idmap/fallback results differ for "
1405 "%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x %s "
1406 "idmap %s fallback %s\n",
1407 guidp->g_guid[0], guidp->g_guid[1], guidp->g_guid[2], guidp->g_guid[3],
1408 guidp->g_guid[4], guidp->g_guid[5], guidp->g_guid[6], guidp->g_guid[7],
1409 guidp->g_guid[8], guidp->g_guid[9], guidp->g_guid[10], guidp->g_guid[11],
1410 guidp->g_guid[12], guidp->g_guid[13], guidp->g_guid[14], guidp->g_guid[15],
1411 isgroup ? "G" : " ", id1, id2);
1412 if (id1 == id1buf) {
1413 /* copy idmap result to output buffer */
1414 len = strlcpy(id, id1, *idlen);
1415 if (len >= *idlen)
1416 error = ENOSPC;
1417 else
1418 *idlen = len;
1419 }
1420 } else if (error1 && !error) {
1421 printf("nfs4_guid2id: idmap/fallback results differ for "
1422 "%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x %s "
1423 "idmap error %d fallback %s\n",
1424 guidp->g_guid[0], guidp->g_guid[1], guidp->g_guid[2], guidp->g_guid[3],
1425 guidp->g_guid[4], guidp->g_guid[5], guidp->g_guid[6], guidp->g_guid[7],
1426 guidp->g_guid[8], guidp->g_guid[9], guidp->g_guid[10], guidp->g_guid[11],
1427 guidp->g_guid[12], guidp->g_guid[13], guidp->g_guid[14], guidp->g_guid[15],
1428 isgroup ? "G" : " ", error1, id2);
1429 /* copy fallback result to output buffer */
1430 len = strlcpy(id, id2, *idlen);
1431 if (len >= *idlen)
1432 error = ENOSPC;
1433 else
1434 *idlen = len;
1435 } else if (!error1 && error) {
1436 printf("nfs4_guid2id: idmap/fallback results differ for "
1437 "%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x_%02x%02x%02x%02x %s "
1438 "idmap %s fallback error %d\n",
1439 guidp->g_guid[0], guidp->g_guid[1], guidp->g_guid[2], guidp->g_guid[3],
1440 guidp->g_guid[4], guidp->g_guid[5], guidp->g_guid[6], guidp->g_guid[7],
1441 guidp->g_guid[8], guidp->g_guid[9], guidp->g_guid[10], guidp->g_guid[11],
1442 guidp->g_guid[12], guidp->g_guid[13], guidp->g_guid[14], guidp->g_guid[15],
1443 isgroup ? "G" : " ", id1, error);
1444 if (id1 == id1buf) {
1445 /* copy idmap result to output buffer */
1446 len = strlcpy(id, id1, *idlen);
1447 if (len >= *idlen)
1448 error = ENOSPC;
1449 else
1450 *idlen = len;
1451 }
1452 error = 0;
1453 } else {
1454 if (error1 != error)
1455 printf("nfs4_guid2id: idmap/fallback results differ for %s %s - "
1456 "idmap error %d fallback error %d\n",
1457 id, isgroup ? "G" : " ", error1, error);
1458 }
1459 }
1460 if (id1buf)
1461 FREE_ZONE(id1buf, MAXPATHLEN, M_NAMEI);
1462 return (error);
1463 }
1464
1465
1466 /*
1467 * Set a vnode attr's supported bits according to the given bitmap
1468 */
1469 void
1470 nfs_vattr_set_supported(uint32_t *bitmap, struct vnode_attr *vap)
1471 {
1472 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TYPE))
1473 VATTR_SET_SUPPORTED(vap, va_type);
1474 // if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_CHANGE))
1475 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_SIZE))
1476 VATTR_SET_SUPPORTED(vap, va_data_size);
1477 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_FSID))
1478 VATTR_SET_SUPPORTED(vap, va_fsid);
1479 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_ACL))
1480 VATTR_SET_SUPPORTED(vap, va_acl);
1481 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_ARCHIVE))
1482 VATTR_SET_SUPPORTED(vap, va_flags);
1483 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_FILEID))
1484 VATTR_SET_SUPPORTED(vap, va_fileid);
1485 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_HIDDEN))
1486 VATTR_SET_SUPPORTED(vap, va_flags);
1487 // if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_MIMETYPE))
1488 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_MODE))
1489 VATTR_SET_SUPPORTED(vap, va_mode);
1490 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_NUMLINKS))
1491 VATTR_SET_SUPPORTED(vap, va_nlink);
1492 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_OWNER)) {
1493 VATTR_SET_SUPPORTED(vap, va_uid);
1494 VATTR_SET_SUPPORTED(vap, va_uuuid);
1495 }
1496 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_OWNER_GROUP)) {
1497 VATTR_SET_SUPPORTED(vap, va_gid);
1498 VATTR_SET_SUPPORTED(vap, va_guuid);
1499 }
1500 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_RAWDEV))
1501 VATTR_SET_SUPPORTED(vap, va_rdev);
1502 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_SPACE_USED))
1503 VATTR_SET_SUPPORTED(vap, va_total_alloc);
1504 // if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_SYSTEM))
1505 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_ACCESS))
1506 VATTR_SET_SUPPORTED(vap, va_access_time);
1507 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_BACKUP))
1508 VATTR_SET_SUPPORTED(vap, va_backup_time);
1509 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_CREATE))
1510 VATTR_SET_SUPPORTED(vap, va_create_time);
1511 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_METADATA))
1512 VATTR_SET_SUPPORTED(vap, va_change_time);
1513 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_MODIFY))
1514 VATTR_SET_SUPPORTED(vap, va_modify_time);
1515 }
1516
1517 /*
1518 * Parse the attributes that are in the mbuf list and store them in
1519 * the given structures.
1520 */
1521 int
1522 nfs4_parsefattr(
1523 struct nfsm_chain *nmc,
1524 struct nfs_fsattr *nfsap,
1525 struct nfs_vattr *nvap,
1526 fhandle_t *fhp,
1527 struct dqblk *dqbp,
1528 struct nfs_fs_locations *nfslsp)
1529 {
1530 int error = 0, error2, rderror = 0, attrbytes;
1531 uint32_t val, val2, val3, i;
1532 uint32_t bitmap[NFS_ATTR_BITMAP_LEN], len;
1533 size_t slen;
1534 char sbuf[64], *s;
1535 struct nfs_fsattr nfsa_dummy;
1536 struct nfs_vattr nva_dummy;
1537 struct dqblk dqb_dummy;
1538 kauth_acl_t acl = NULL;
1539 uint32_t ace_type, ace_flags, ace_mask;
1540 struct nfs_fs_locations nfsls_dummy;
1541 struct sockaddr_storage ss;
1542
1543 /* if not interested in some values... throw 'em into a local dummy variable */
1544 if (!nfsap)
1545 nfsap = &nfsa_dummy;
1546 if (!nvap)
1547 nvap = &nva_dummy;
1548 if (!dqbp)
1549 dqbp = &dqb_dummy;
1550 if (!nfslsp)
1551 nfslsp = &nfsls_dummy;
1552 bzero(nfslsp, sizeof(*nfslsp));
1553
1554 attrbytes = val = val2 = val3 = 0;
1555 s = sbuf;
1556 slen = sizeof(sbuf);
1557 NVATTR_INIT(nvap);
1558
1559 len = NFS_ATTR_BITMAP_LEN;
1560 nfsm_chain_get_bitmap(error, nmc, bitmap, len);
1561 /* add bits to object/fs attr bitmaps */
1562 for (i=0; i < NFS_ATTR_BITMAP_LEN; i++) {
1563 nvap->nva_bitmap[i] |= bitmap[i] & nfs_object_attr_bitmap[i];
1564 nfsap->nfsa_bitmap[i] |= bitmap[i] & nfs_fs_attr_bitmap[i];
1565 }
1566
1567 nfsm_chain_get_32(error, nmc, attrbytes);
1568 nfsmout_if(error);
1569
1570 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_SUPPORTED_ATTRS)) {
1571 len = NFS_ATTR_BITMAP_LEN;
1572 nfsm_chain_get_bitmap(error, nmc, nfsap->nfsa_supp_attr, len);
1573 attrbytes -= (len + 1) * NFSX_UNSIGNED;
1574 }
1575 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TYPE)) {
1576 nfsm_chain_get_32(error, nmc, val);
1577 nvap->nva_type = nfstov_type(val, NFS_VER4);
1578 if ((val == NFATTRDIR) || (val == NFNAMEDATTR))
1579 nvap->nva_flags |= NFS_FFLAG_IS_ATTR;
1580 else
1581 nvap->nva_flags &= ~NFS_FFLAG_IS_ATTR;
1582 attrbytes -= NFSX_UNSIGNED;
1583 }
1584 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_FH_EXPIRE_TYPE)) {
1585 nfsm_chain_get_32(error, nmc, val);
1586 nfsmout_if(error);
1587 nfsap->nfsa_flags &= ~NFS_FSFLAG_FHTYPE_MASK;
1588 nfsap->nfsa_flags |= val << NFS_FSFLAG_FHTYPE_SHIFT;
1589 if (val & ~0xff)
1590 printf("nfs: warning unknown fh type: 0x%x\n", val);
1591 attrbytes -= NFSX_UNSIGNED;
1592 }
1593 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_CHANGE)) {
1594 nfsm_chain_get_64(error, nmc, nvap->nva_change);
1595 attrbytes -= 2 * NFSX_UNSIGNED;
1596 }
1597 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_SIZE)) {
1598 nfsm_chain_get_64(error, nmc, nvap->nva_size);
1599 attrbytes -= 2 * NFSX_UNSIGNED;
1600 }
1601 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_LINK_SUPPORT)) {
1602 nfsm_chain_get_32(error, nmc, val);
1603 if (val)
1604 nfsap->nfsa_flags |= NFS_FSFLAG_LINK;
1605 else
1606 nfsap->nfsa_flags &= ~NFS_FSFLAG_LINK;
1607 attrbytes -= NFSX_UNSIGNED;
1608 }
1609 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_SYMLINK_SUPPORT)) {
1610 nfsm_chain_get_32(error, nmc, val);
1611 if (val)
1612 nfsap->nfsa_flags |= NFS_FSFLAG_SYMLINK;
1613 else
1614 nfsap->nfsa_flags &= ~NFS_FSFLAG_SYMLINK;
1615 attrbytes -= NFSX_UNSIGNED;
1616 }
1617 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_NAMED_ATTR)) {
1618 nfsm_chain_get_32(error, nmc, val);
1619 if (val)
1620 nvap->nva_flags |= NFS_FFLAG_HAS_NAMED_ATTRS;
1621 else
1622 nvap->nva_flags &= ~NFS_FFLAG_HAS_NAMED_ATTRS;
1623 attrbytes -= NFSX_UNSIGNED;
1624 }
1625 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_FSID)) {
1626 nfsm_chain_get_64(error, nmc, nvap->nva_fsid.major);
1627 nfsm_chain_get_64(error, nmc, nvap->nva_fsid.minor);
1628 attrbytes -= 4 * NFSX_UNSIGNED;
1629 }
1630 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_UNIQUE_HANDLES)) {
1631 nfsm_chain_get_32(error, nmc, val);
1632 if (val)
1633 nfsap->nfsa_flags |= NFS_FSFLAG_UNIQUE_FH;
1634 else
1635 nfsap->nfsa_flags &= ~NFS_FSFLAG_UNIQUE_FH;
1636 attrbytes -= NFSX_UNSIGNED;
1637 }
1638 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_LEASE_TIME)) {
1639 nfsm_chain_get_32(error, nmc, nfsap->nfsa_lease);
1640 attrbytes -= NFSX_UNSIGNED;
1641 }
1642 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_RDATTR_ERROR)) {
1643 nfsm_chain_get_32(error, nmc, rderror);
1644 attrbytes -= NFSX_UNSIGNED;
1645 if (!rderror) { /* no error */
1646 NFS_BITMAP_CLR(bitmap, NFS_FATTR_RDATTR_ERROR);
1647 NFS_BITMAP_CLR(nvap->nva_bitmap, NFS_FATTR_RDATTR_ERROR);
1648 }
1649 }
1650 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_ACL)) {
1651 error2 = 0;
1652 ace_type = ace_flags = ace_mask = 0;
1653 nfsm_chain_get_32(error, nmc, val); /* ACE count */
1654 if (!error && (val > KAUTH_ACL_MAX_ENTRIES))
1655 error = EOVERFLOW;
1656 if (!error && !((acl = kauth_acl_alloc(val))))
1657 error = ENOMEM;
1658 if (!error && acl) {
1659 acl->acl_entrycount = val;
1660 acl->acl_flags = 0;
1661 }
1662 attrbytes -= NFSX_UNSIGNED;
1663 nfsm_assert(error, (attrbytes >= 0), EBADRPC);
1664 for (i=0; !error && (i < val); i++) {
1665 nfsm_chain_get_32(error, nmc, ace_type);
1666 nfsm_chain_get_32(error, nmc, ace_flags);
1667 nfsm_chain_get_32(error, nmc, ace_mask);
1668 nfsm_chain_get_32(error, nmc, len);
1669 if (!error && len >= NFS_MAX_WHO)
1670 error = EBADRPC;
1671 acl->acl_ace[i].ace_flags = nfs4_ace_nfstype_to_vfstype(ace_type, &error);
1672 acl->acl_ace[i].ace_flags |= nfs4_ace_nfsflags_to_vfsflags(ace_flags);
1673 acl->acl_ace[i].ace_rights = nfs4_ace_nfsmask_to_vfsrights(ace_mask);
1674 if (!error && !error2 && (len >= slen)) {
1675 if (s != sbuf) {
1676 FREE(s, M_TEMP);
1677 s = sbuf;
1678 slen = sizeof(sbuf);
1679 }
1680 /* Let's add a bit more if we can to the allocation as to try and avoid future allocations */
1681 MALLOC(s, char*, (len + 16 < NFS_MAX_WHO) ? len+16 : NFS_MAX_WHO, M_TEMP, M_WAITOK);
1682 if (s)
1683 slen = (len + 16 < NFS_MAX_WHO) ? len+16 : NFS_MAX_WHO;
1684 else
1685 error = ENOMEM;
1686 }
1687 if (error2)
1688 nfsm_chain_adv(error, nmc, nfsm_rndup(len));
1689 else
1690 nfsm_chain_get_opaque(error, nmc, len, s);
1691 if (!error && !error2) {
1692 s[len] = '\0';
1693 error2 = nfs4_id2guid(s, &acl->acl_ace[i].ace_applicable,
1694 (ace_flags & NFS_ACE_IDENTIFIER_GROUP));
1695 if (error2 && (nfs_idmap_ctrl & NFS_IDMAP_CTRL_LOG_FAILED_MAPPINGS))
1696 printf("nfs4_parsefattr: ACE WHO %s is no one, no guid?, error %d\n", s, error2);
1697 }
1698 attrbytes -= 4*NFSX_UNSIGNED + nfsm_rndup(len);
1699 nfsm_assert(error, (attrbytes >= 0), EBADRPC);
1700 }
1701 nfsmout_if(error);
1702 if ((nvap != &nva_dummy) && !error2) {
1703 nvap->nva_acl = acl;
1704 acl = NULL;
1705 }
1706 }
1707 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_ACLSUPPORT)) {
1708 /*
1709 * Support ACLs if: the server supports DENY/ALLOC ACEs and
1710 * (just to be safe) FATTR_ACL is in the supported list too.
1711 */
1712 nfsm_chain_get_32(error, nmc, val);
1713 if ((val & (NFS_ACL_SUPPORT_ALLOW_ACL|NFS_ACL_SUPPORT_DENY_ACL)) &&
1714 NFS_BITMAP_ISSET(nfsap->nfsa_supp_attr, NFS_FATTR_ACL)) {
1715 nfsap->nfsa_flags |= NFS_FSFLAG_ACL;
1716 } else {
1717 nfsap->nfsa_flags &= ~NFS_FSFLAG_ACL;
1718 }
1719 attrbytes -= NFSX_UNSIGNED;
1720 }
1721 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_ARCHIVE)) { /* SF_ARCHIVED */
1722 nfsm_chain_get_32(error, nmc, val);
1723 if (val)
1724 nvap->nva_flags |= NFS_FFLAG_ARCHIVED;
1725 else
1726 nvap->nva_flags &= ~NFS_FFLAG_ARCHIVED;
1727 attrbytes -= NFSX_UNSIGNED;
1728 }
1729 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_CANSETTIME)) {
1730 nfsm_chain_get_32(error, nmc, val);
1731 if (val)
1732 nfsap->nfsa_flags |= NFS_FSFLAG_SET_TIME;
1733 else
1734 nfsap->nfsa_flags &= ~NFS_FSFLAG_SET_TIME;
1735 attrbytes -= NFSX_UNSIGNED;
1736 }
1737 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_CASE_INSENSITIVE)) {
1738 nfsm_chain_get_32(error, nmc, val);
1739 if (val)
1740 nfsap->nfsa_flags |= NFS_FSFLAG_CASE_INSENSITIVE;
1741 else
1742 nfsap->nfsa_flags &= ~NFS_FSFLAG_CASE_INSENSITIVE;
1743 attrbytes -= NFSX_UNSIGNED;
1744 }
1745 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_CASE_PRESERVING)) {
1746 nfsm_chain_get_32(error, nmc, val);
1747 if (val)
1748 nfsap->nfsa_flags |= NFS_FSFLAG_CASE_PRESERVING;
1749 else
1750 nfsap->nfsa_flags &= ~NFS_FSFLAG_CASE_PRESERVING;
1751 attrbytes -= NFSX_UNSIGNED;
1752 }
1753 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_CHOWN_RESTRICTED)) {
1754 nfsm_chain_get_32(error, nmc, val);
1755 if (val)
1756 nfsap->nfsa_flags |= NFS_FSFLAG_CHOWN_RESTRICTED;
1757 else
1758 nfsap->nfsa_flags &= ~NFS_FSFLAG_CHOWN_RESTRICTED;
1759 attrbytes -= NFSX_UNSIGNED;
1760 }
1761 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_FILEHANDLE)) {
1762 nfsm_chain_get_32(error, nmc, val);
1763 if (fhp) {
1764 fhp->fh_len = val;
1765 nfsm_chain_get_opaque(error, nmc, nfsm_rndup(val), fhp->fh_data);
1766 } else {
1767 nfsm_chain_adv(error, nmc, nfsm_rndup(val));
1768 }
1769 attrbytes -= NFSX_UNSIGNED + nfsm_rndup(val);
1770 }
1771 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_FILEID)) {
1772 nfsm_chain_get_64(error, nmc, nvap->nva_fileid);
1773 attrbytes -= 2 * NFSX_UNSIGNED;
1774 }
1775 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_FILES_AVAIL)) {
1776 nfsm_chain_get_64(error, nmc, nfsap->nfsa_files_avail);
1777 attrbytes -= 2 * NFSX_UNSIGNED;
1778 }
1779 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_FILES_FREE)) {
1780 nfsm_chain_get_64(error, nmc, nfsap->nfsa_files_free);
1781 attrbytes -= 2 * NFSX_UNSIGNED;
1782 }
1783 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_FILES_TOTAL)) {
1784 nfsm_chain_get_64(error, nmc, nfsap->nfsa_files_total);
1785 attrbytes -= 2 * NFSX_UNSIGNED;
1786 }
1787 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_FS_LOCATIONS)) {
1788 uint32_t loc, serv, comp;
1789 struct nfs_fs_location *fsl;
1790 struct nfs_fs_server *fss;
1791 struct nfs_fs_path *fsp;
1792
1793 /* get root pathname */
1794 fsp = &nfslsp->nl_root;
1795 nfsm_chain_get_32(error, nmc, fsp->np_compcount); /* component count */
1796 attrbytes -= NFSX_UNSIGNED;
1797 /* sanity check component count */
1798 if (!error && (fsp->np_compcount > MAXPATHLEN))
1799 error = EBADRPC;
1800 nfsmout_if(error);
1801 if (fsp->np_compcount) {
1802 MALLOC(fsp->np_components, char **, fsp->np_compcount * sizeof(char*), M_TEMP, M_WAITOK|M_ZERO);
1803 if (!fsp->np_components)
1804 error = ENOMEM;
1805 }
1806 for (comp = 0; comp < fsp->np_compcount; comp++) {
1807 nfsm_chain_get_32(error, nmc, val); /* component length */
1808 /* sanity check component length */
1809 if (!error && (val == 0)) {
1810 /*
1811 * Apparently some people think a path with zero components should
1812 * be encoded with one zero-length component. So, just ignore any
1813 * zero length components.
1814 */
1815 comp--;
1816 fsp->np_compcount--;
1817 if (fsp->np_compcount == 0) {
1818 FREE(fsp->np_components, M_TEMP);
1819 fsp->np_components = NULL;
1820 }
1821 attrbytes -= NFSX_UNSIGNED;
1822 continue;
1823 }
1824 if (!error && ((val < 1) || (val > MAXPATHLEN)))
1825 error = EBADRPC;
1826 nfsmout_if(error);
1827 MALLOC(fsp->np_components[comp], char *, val+1, M_TEMP, M_WAITOK|M_ZERO);
1828 if (!fsp->np_components[comp])
1829 error = ENOMEM;
1830 nfsmout_if(error);
1831 nfsm_chain_get_opaque(error, nmc, val, fsp->np_components[comp]); /* component */
1832 attrbytes -= NFSX_UNSIGNED + nfsm_rndup(val);
1833 }
1834 nfsm_chain_get_32(error, nmc, nfslsp->nl_numlocs); /* fs location count */
1835 attrbytes -= NFSX_UNSIGNED;
1836 /* sanity check location count */
1837 if (!error && (nfslsp->nl_numlocs > 256))
1838 error = EBADRPC;
1839 nfsmout_if(error);
1840 if (nfslsp->nl_numlocs > 0) {
1841 MALLOC(nfslsp->nl_locations, struct nfs_fs_location **, nfslsp->nl_numlocs * sizeof(struct nfs_fs_location*), M_TEMP, M_WAITOK|M_ZERO);
1842 if (!nfslsp->nl_locations)
1843 error = ENOMEM;
1844 }
1845 nfsmout_if(error);
1846 for (loc = 0; loc < nfslsp->nl_numlocs; loc++) {
1847 nfsmout_if(error);
1848 MALLOC(fsl, struct nfs_fs_location *, sizeof(struct nfs_fs_location), M_TEMP, M_WAITOK|M_ZERO);
1849 if (!fsl)
1850 error = ENOMEM;
1851 nfslsp->nl_locations[loc] = fsl;
1852 nfsm_chain_get_32(error, nmc, fsl->nl_servcount); /* server count */
1853 attrbytes -= NFSX_UNSIGNED;
1854 /* sanity check server count */
1855 if (!error && ((fsl->nl_servcount < 1) || (fsl->nl_servcount > 256)))
1856 error = EBADRPC;
1857 nfsmout_if(error);
1858 MALLOC(fsl->nl_servers, struct nfs_fs_server **, fsl->nl_servcount * sizeof(struct nfs_fs_server*), M_TEMP, M_WAITOK|M_ZERO);
1859 if (!fsl->nl_servers)
1860 error = ENOMEM;
1861 for (serv = 0; serv < fsl->nl_servcount; serv++) {
1862 nfsmout_if(error);
1863 MALLOC(fss, struct nfs_fs_server *, sizeof(struct nfs_fs_server), M_TEMP, M_WAITOK|M_ZERO);
1864 if (!fss)
1865 error = ENOMEM;
1866 fsl->nl_servers[serv] = fss;
1867 nfsm_chain_get_32(error, nmc, val); /* server name length */
1868 /* sanity check server name length */
1869 if (!error && ((val < 1) || (val > MAXPATHLEN)))
1870 error = EINVAL;
1871 nfsmout_if(error);
1872 MALLOC(fss->ns_name, char *, val+1, M_TEMP, M_WAITOK|M_ZERO);
1873 if (!fss->ns_name)
1874 error = ENOMEM;
1875 nfsm_chain_get_opaque(error, nmc, val, fss->ns_name); /* server name */
1876 attrbytes -= NFSX_UNSIGNED + nfsm_rndup(val);
1877 nfsmout_if(error);
1878 /* copy name to address if it converts to a sockaddr */
1879 if (nfs_uaddr2sockaddr(fss->ns_name, (struct sockaddr*)&ss)) {
1880 fss->ns_addrcount = 1;
1881 MALLOC(fss->ns_addresses, char **, sizeof(char *), M_TEMP, M_WAITOK|M_ZERO);
1882 if (!fss->ns_addresses)
1883 error = ENOMEM;
1884 nfsmout_if(error);
1885 MALLOC(fss->ns_addresses[0], char *, val+1, M_TEMP, M_WAITOK|M_ZERO);
1886 if (!fss->ns_addresses[0])
1887 error = ENOMEM;
1888 nfsmout_if(error);
1889 strlcpy(fss->ns_addresses[0], fss->ns_name, val+1);
1890 }
1891 }
1892 /* get pathname */
1893 fsp = &fsl->nl_path;
1894 nfsm_chain_get_32(error, nmc, fsp->np_compcount); /* component count */
1895 attrbytes -= NFSX_UNSIGNED;
1896 /* sanity check component count */
1897 if (!error && (fsp->np_compcount > MAXPATHLEN))
1898 error = EINVAL;
1899 nfsmout_if(error);
1900 if (fsp->np_compcount) {
1901 MALLOC(fsp->np_components, char **, fsp->np_compcount * sizeof(char*), M_TEMP, M_WAITOK|M_ZERO);
1902 if (!fsp->np_components)
1903 error = ENOMEM;
1904 }
1905 for (comp = 0; comp < fsp->np_compcount; comp++) {
1906 nfsm_chain_get_32(error, nmc, val); /* component length */
1907 /* sanity check component length */
1908 if (!error && (val == 0)) {
1909 /*
1910 * Apparently some people think a path with zero components should
1911 * be encoded with one zero-length component. So, just ignore any
1912 * zero length components.
1913 */
1914 comp--;
1915 fsp->np_compcount--;
1916 if (fsp->np_compcount == 0) {
1917 FREE(fsp->np_components, M_TEMP);
1918 fsp->np_components = NULL;
1919 }
1920 attrbytes -= NFSX_UNSIGNED;
1921 continue;
1922 }
1923 if (!error && ((val < 1) || (val > MAXPATHLEN)))
1924 error = EINVAL;
1925 nfsmout_if(error);
1926 MALLOC(fsp->np_components[comp], char *, val+1, M_TEMP, M_WAITOK|M_ZERO);
1927 if (!fsp->np_components[comp])
1928 error = ENOMEM;
1929 nfsm_chain_get_opaque(error, nmc, val, fsp->np_components[comp]); /* component */
1930 attrbytes -= NFSX_UNSIGNED + nfsm_rndup(val);
1931 }
1932 }
1933 nfsm_assert(error, (attrbytes >= 0), EBADRPC);
1934 }
1935 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_HIDDEN)) { /* UF_HIDDEN */
1936 nfsm_chain_get_32(error, nmc, val);
1937 if (val)
1938 nvap->nva_flags |= NFS_FFLAG_HIDDEN;
1939 else
1940 nvap->nva_flags &= ~NFS_FFLAG_HIDDEN;
1941 attrbytes -= NFSX_UNSIGNED;
1942 }
1943 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_HOMOGENEOUS)) {
1944 /* XXX If NOT homogeneous, we may need to clear flags on the mount */
1945 nfsm_chain_get_32(error, nmc, val);
1946 if (val)
1947 nfsap->nfsa_flags |= NFS_FSFLAG_HOMOGENEOUS;
1948 else
1949 nfsap->nfsa_flags &= ~NFS_FSFLAG_HOMOGENEOUS;
1950 attrbytes -= NFSX_UNSIGNED;
1951 }
1952 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_MAXFILESIZE)) {
1953 nfsm_chain_get_64(error, nmc, nfsap->nfsa_maxfilesize);
1954 attrbytes -= 2 * NFSX_UNSIGNED;
1955 }
1956 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_MAXLINK)) {
1957 nfsm_chain_get_32(error, nmc, nvap->nva_maxlink);
1958 if (!error && (nfsap->nfsa_maxlink > INT32_MAX))
1959 nfsap->nfsa_maxlink = INT32_MAX;
1960 attrbytes -= NFSX_UNSIGNED;
1961 }
1962 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_MAXNAME)) {
1963 nfsm_chain_get_32(error, nmc, nfsap->nfsa_maxname);
1964 if (!error && (nfsap->nfsa_maxname > INT32_MAX))
1965 nfsap->nfsa_maxname = INT32_MAX;
1966 attrbytes -= NFSX_UNSIGNED;
1967 }
1968 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_MAXREAD)) {
1969 nfsm_chain_get_64(error, nmc, nfsap->nfsa_maxread);
1970 attrbytes -= 2 * NFSX_UNSIGNED;
1971 }
1972 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_MAXWRITE)) {
1973 nfsm_chain_get_64(error, nmc, nfsap->nfsa_maxwrite);
1974 attrbytes -= 2 * NFSX_UNSIGNED;
1975 }
1976 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_MIMETYPE)) {
1977 nfsm_chain_get_32(error, nmc, val);
1978 nfsm_chain_adv(error, nmc, nfsm_rndup(val));
1979 attrbytes -= NFSX_UNSIGNED + nfsm_rndup(val);
1980 }
1981 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_MODE)) {
1982 nfsm_chain_get_32(error, nmc, nvap->nva_mode);
1983 attrbytes -= NFSX_UNSIGNED;
1984 }
1985 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_NO_TRUNC)) {
1986 nfsm_chain_get_32(error, nmc, val);
1987 if (val)
1988 nfsap->nfsa_flags |= NFS_FSFLAG_NO_TRUNC;
1989 else
1990 nfsap->nfsa_flags &= ~NFS_FSFLAG_NO_TRUNC;
1991 attrbytes -= NFSX_UNSIGNED;
1992 }
1993 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_NUMLINKS)) {
1994 nfsm_chain_get_32(error, nmc, val);
1995 nvap->nva_nlink = val;
1996 attrbytes -= NFSX_UNSIGNED;
1997 }
1998 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_OWNER)) {
1999 nfsm_chain_get_32(error, nmc, len);
2000 if (!error && len >= NFS_MAX_WHO)
2001 error = EBADRPC;
2002 if (!error && (len >= slen)) {
2003 if (s != sbuf) {
2004 FREE(s, M_TEMP);
2005 s = sbuf;
2006 slen = sizeof(sbuf);
2007 }
2008 /* Let's add a bit more if we can to the allocation as to try and avoid future allocations */
2009 MALLOC(s, char*, (len + 16 < NFS_MAX_WHO) ? len+16 : NFS_MAX_WHO, M_TEMP, M_WAITOK);
2010 if (s)
2011 slen = (len + 16 < NFS_MAX_WHO) ? len+16 : NFS_MAX_WHO;
2012 else
2013 error = ENOMEM;
2014 }
2015 nfsm_chain_get_opaque(error, nmc, len, s);
2016 if (!error) {
2017 s[len] = '\0';
2018 error = nfs4_id2guid(s, &nvap->nva_uuuid, 0);
2019 if (!error)
2020 error = kauth_cred_guid2uid(&nvap->nva_uuuid, &nvap->nva_uid);
2021 if (error) {
2022 /* unable to get either GUID or UID, set to default */
2023 nvap->nva_uid = (uid_t)((nfs_idmap_ctrl & NFS_IDMAP_CTRL_UNKNOWN_IS_99) ? 99 : -2);
2024 if (nfs_idmap_ctrl & NFS_IDMAP_CTRL_LOG_FAILED_MAPPINGS)
2025 printf("nfs4_parsefattr: owner %s is no one, no %s?, error %d\n", s,
2026 kauth_guid_equal(&nvap->nva_uuuid, &kauth_null_guid) ? "guid" : "uid",
2027 error);
2028 error = 0;
2029 }
2030 }
2031 attrbytes -= NFSX_UNSIGNED + nfsm_rndup(len);
2032 }
2033 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_OWNER_GROUP)) {
2034 nfsm_chain_get_32(error, nmc, len);
2035 if (!error && len >= NFS_MAX_WHO)
2036 error = EBADRPC;
2037 if (!error && (len >= slen)) {
2038 if (s != sbuf) {
2039 FREE(s, M_TEMP);
2040 s = sbuf;
2041 slen = sizeof(sbuf);
2042 }
2043 /* Let's add a bit more if we can to the allocation as to try and avoid future allocations */
2044 MALLOC(s, char*, (len + 16 < NFS_MAX_WHO) ? len+16 : NFS_MAX_WHO, M_TEMP, M_WAITOK);
2045 if (s)
2046 slen = (len + 16 < NFS_MAX_WHO) ? len+16 : NFS_MAX_WHO;
2047 else
2048 error = ENOMEM;
2049 }
2050 nfsm_chain_get_opaque(error, nmc, len, s);
2051 if (!error) {
2052 s[len] = '\0';
2053 error = nfs4_id2guid(s, &nvap->nva_guuid, 1);
2054 if (!error)
2055 error = kauth_cred_guid2gid(&nvap->nva_guuid, &nvap->nva_gid);
2056 if (error) {
2057 /* unable to get either GUID or GID, set to default */
2058 nvap->nva_gid = (gid_t)((nfs_idmap_ctrl & NFS_IDMAP_CTRL_UNKNOWN_IS_99) ? 99 : -2);
2059 if (nfs_idmap_ctrl & NFS_IDMAP_CTRL_LOG_FAILED_MAPPINGS)
2060 printf("nfs4_parsefattr: group %s is no one, no %s?, error %d\n", s,
2061 kauth_guid_equal(&nvap->nva_guuid, &kauth_null_guid) ? "guid" : "gid",
2062 error);
2063 error = 0;
2064 }
2065 }
2066 attrbytes -= NFSX_UNSIGNED + nfsm_rndup(len);
2067 }
2068 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_QUOTA_AVAIL_HARD)) {
2069 nfsm_chain_get_64(error, nmc, dqbp->dqb_bhardlimit);
2070 attrbytes -= 2 * NFSX_UNSIGNED;
2071 }
2072 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_QUOTA_AVAIL_SOFT)) {
2073 nfsm_chain_get_64(error, nmc, dqbp->dqb_bsoftlimit);
2074 attrbytes -= 2 * NFSX_UNSIGNED;
2075 }
2076 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_QUOTA_USED)) {
2077 nfsm_chain_get_64(error, nmc, dqbp->dqb_curbytes);
2078 attrbytes -= 2 * NFSX_UNSIGNED;
2079 }
2080 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_RAWDEV)) {
2081 nfsm_chain_get_32(error, nmc, nvap->nva_rawdev.specdata1);
2082 nfsm_chain_get_32(error, nmc, nvap->nva_rawdev.specdata2);
2083 attrbytes -= 2 * NFSX_UNSIGNED;
2084 }
2085 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_SPACE_AVAIL)) {
2086 nfsm_chain_get_64(error, nmc, nfsap->nfsa_space_avail);
2087 attrbytes -= 2 * NFSX_UNSIGNED;
2088 }
2089 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_SPACE_FREE)) {
2090 nfsm_chain_get_64(error, nmc, nfsap->nfsa_space_free);
2091 attrbytes -= 2 * NFSX_UNSIGNED;
2092 }
2093 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_SPACE_TOTAL)) {
2094 nfsm_chain_get_64(error, nmc, nfsap->nfsa_space_total);
2095 attrbytes -= 2 * NFSX_UNSIGNED;
2096 }
2097 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_SPACE_USED)) {
2098 nfsm_chain_get_64(error, nmc, nvap->nva_bytes);
2099 attrbytes -= 2 * NFSX_UNSIGNED;
2100 }
2101 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_SYSTEM)) {
2102 /* we'd support this if we had a flag to map it to... */
2103 nfsm_chain_adv(error, nmc, NFSX_UNSIGNED);
2104 attrbytes -= NFSX_UNSIGNED;
2105 }
2106 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_ACCESS)) {
2107 nfsm_chain_get_64(error, nmc, nvap->nva_timesec[NFSTIME_ACCESS]);
2108 nfsm_chain_get_32(error, nmc, nvap->nva_timensec[NFSTIME_ACCESS]);
2109 attrbytes -= 3 * NFSX_UNSIGNED;
2110 }
2111 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_ACCESS_SET)) {
2112 nfsm_chain_adv(error, nmc, 4*NFSX_UNSIGNED); /* just skip it */
2113 attrbytes -= 4 * NFSX_UNSIGNED;
2114 }
2115 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_BACKUP)) {
2116 nfsm_chain_get_64(error, nmc, nvap->nva_timesec[NFSTIME_BACKUP]);
2117 nfsm_chain_get_32(error, nmc, nvap->nva_timensec[NFSTIME_BACKUP]);
2118 attrbytes -= 3 * NFSX_UNSIGNED;
2119 }
2120 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_CREATE)) {
2121 nfsm_chain_get_64(error, nmc, nvap->nva_timesec[NFSTIME_CREATE]);
2122 nfsm_chain_get_32(error, nmc, nvap->nva_timensec[NFSTIME_CREATE]);
2123 attrbytes -= 3 * NFSX_UNSIGNED;
2124 }
2125 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_DELTA)) { /* skip for now */
2126 nfsm_chain_adv(error, nmc, 3*NFSX_UNSIGNED);
2127 attrbytes -= 3 * NFSX_UNSIGNED;
2128 }
2129 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_METADATA)) {
2130 nfsm_chain_get_64(error, nmc, nvap->nva_timesec[NFSTIME_CHANGE]);
2131 nfsm_chain_get_32(error, nmc, nvap->nva_timensec[NFSTIME_CHANGE]);
2132 attrbytes -= 3 * NFSX_UNSIGNED;
2133 }
2134 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_MODIFY)) {
2135 nfsm_chain_get_64(error, nmc, nvap->nva_timesec[NFSTIME_MODIFY]);
2136 nfsm_chain_get_32(error, nmc, nvap->nva_timensec[NFSTIME_MODIFY]);
2137 attrbytes -= 3 * NFSX_UNSIGNED;
2138 }
2139 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_MODIFY_SET)) {
2140 nfsm_chain_adv(error, nmc, 4*NFSX_UNSIGNED); /* just skip it */
2141 attrbytes -= 4 * NFSX_UNSIGNED;
2142 }
2143 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_MOUNTED_ON_FILEID)) {
2144 #if CONFIG_TRIGGERS
2145 /* we prefer the mounted on file ID, so just replace the fileid */
2146 nfsm_chain_get_64(error, nmc, nvap->nva_fileid);
2147 #else
2148 nfsm_chain_adv(error, nmc, 2*NFSX_UNSIGNED);
2149 #endif
2150 attrbytes -= 2 * NFSX_UNSIGNED;
2151 }
2152 /* advance over any leftover attrbytes */
2153 nfsm_assert(error, (attrbytes >= 0), EBADRPC);
2154 nfsm_chain_adv(error, nmc, nfsm_rndup(attrbytes));
2155 nfsmout:
2156 if (error)
2157 nfs_fs_locations_cleanup(nfslsp);
2158 if (!error && rderror)
2159 error = rderror;
2160 /* free up temporary resources */
2161 if (s && (s != sbuf))
2162 FREE(s, M_TEMP);
2163 if (acl)
2164 kauth_acl_free(acl);
2165 if (error && nvap->nva_acl) {
2166 kauth_acl_free(nvap->nva_acl);
2167 nvap->nva_acl = NULL;
2168 }
2169 return (error);
2170 }
2171
2172 /*
2173 * Add an NFSv4 "sattr" structure to an mbuf chain
2174 */
2175 int
2176 nfsm_chain_add_fattr4_f(struct nfsm_chain *nmc, struct vnode_attr *vap, struct nfsmount *nmp)
2177 {
2178 int error = 0, attrbytes, slen, len, i, isgroup;
2179 uint32_t *pattrbytes, val, acecount;;
2180 uint32_t bitmap[NFS_ATTR_BITMAP_LEN];
2181 char sbuf[64], *s;
2182 kauth_acl_t acl;
2183 gid_t gid;
2184
2185 s = sbuf;
2186 slen = sizeof(sbuf);
2187
2188 /* First calculate the bitmap... */
2189 nfs_vattr_set_bitmap(nmp, bitmap, vap);
2190
2191 /*
2192 * Now pack it all together:
2193 * BITMAP, #BYTES, ATTRS
2194 * Keep a pointer to the length so we can set it later.
2195 */
2196 nfsm_chain_add_bitmap(error, nmc, bitmap, NFS_ATTR_BITMAP_LEN);
2197 attrbytes = 0;
2198 nfsm_chain_add_32(error, nmc, attrbytes);
2199 pattrbytes = (uint32_t*)(nmc->nmc_ptr - NFSX_UNSIGNED);
2200
2201 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_SIZE)) {
2202 nfsm_chain_add_64(error, nmc, vap->va_data_size);
2203 attrbytes += 2*NFSX_UNSIGNED;
2204 }
2205 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_ACL)) {
2206 acl = vap->va_acl;
2207 if (!acl || (acl->acl_entrycount == KAUTH_FILESEC_NOACL))
2208 acecount = 0;
2209 else
2210 acecount = acl->acl_entrycount;
2211 nfsm_chain_add_32(error, nmc, acecount);
2212 attrbytes += NFSX_UNSIGNED;
2213 for (i=0; !error && (i < (int)acecount); i++) {
2214 val = (acl->acl_ace[i].ace_flags & KAUTH_ACE_KINDMASK);
2215 val = nfs4_ace_vfstype_to_nfstype(val, &error);
2216 nfsm_chain_add_32(error, nmc, val);
2217 val = nfs4_ace_vfsflags_to_nfsflags(acl->acl_ace[i].ace_flags);
2218 nfsm_chain_add_32(error, nmc, val);
2219 val = nfs4_ace_vfsrights_to_nfsmask(acl->acl_ace[i].ace_rights);
2220 nfsm_chain_add_32(error, nmc, val);
2221 len = slen;
2222 isgroup = (kauth_cred_guid2gid(&acl->acl_ace[i].ace_applicable, &gid) == 0);
2223 error = nfs4_guid2id(&acl->acl_ace[i].ace_applicable, s, &len, isgroup);
2224 if (error == ENOSPC) {
2225 if (s != sbuf) {
2226 FREE(s, M_TEMP);
2227 s = sbuf;
2228 }
2229 len += 8;
2230 MALLOC(s, char*, len, M_TEMP, M_WAITOK);
2231 if (s) {
2232 slen = len;
2233 error = nfs4_guid2id(&acl->acl_ace[i].ace_applicable, s, &len, isgroup);
2234 } else {
2235 error = ENOMEM;
2236 }
2237 }
2238 nfsm_chain_add_name(error, nmc, s, len, nmp);
2239 attrbytes += 4*NFSX_UNSIGNED + nfsm_rndup(len);
2240 }
2241 }
2242 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_ARCHIVE)) {
2243 nfsm_chain_add_32(error, nmc, (vap->va_flags & SF_ARCHIVED) ? 1 : 0);
2244 attrbytes += NFSX_UNSIGNED;
2245 }
2246 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_HIDDEN)) {
2247 nfsm_chain_add_32(error, nmc, (vap->va_flags & UF_HIDDEN) ? 1 : 0);
2248 attrbytes += NFSX_UNSIGNED;
2249 }
2250 // NFS_BITMAP_ISSET(bitmap, NFS_FATTR_MIMETYPE)
2251 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_MODE)) {
2252 nfsm_chain_add_32(error, nmc, vap->va_mode);
2253 attrbytes += NFSX_UNSIGNED;
2254 }
2255 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_OWNER)) {
2256 nfsmout_if(error);
2257 /* if we have va_uuuid use it, otherwise use uid */
2258 if (!VATTR_IS_ACTIVE(vap, va_uuuid)) {
2259 error = kauth_cred_uid2guid(vap->va_uid, &vap->va_uuuid);
2260 nfsmout_if(error);
2261 }
2262 len = slen;
2263 error = nfs4_guid2id(&vap->va_uuuid, s, &len, 0);
2264 if (error == ENOSPC) {
2265 if (s != sbuf) {
2266 FREE(s, M_TEMP);
2267 s = sbuf;
2268 }
2269 len += 8;
2270 MALLOC(s, char*, len, M_TEMP, M_WAITOK);
2271 if (s) {
2272 slen = len;
2273 error = nfs4_guid2id(&vap->va_uuuid, s, &len, 0);
2274 } else {
2275 error = ENOMEM;
2276 }
2277 }
2278 nfsm_chain_add_name(error, nmc, s, len, nmp);
2279 attrbytes += NFSX_UNSIGNED + nfsm_rndup(len);
2280 }
2281 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_OWNER_GROUP)) {
2282 nfsmout_if(error);
2283 /* if we have va_guuid use it, otherwise use gid */
2284 if (!VATTR_IS_ACTIVE(vap, va_guuid)) {
2285 error = kauth_cred_gid2guid(vap->va_gid, &vap->va_guuid);
2286 nfsmout_if(error);
2287 }
2288 len = slen;
2289 error = nfs4_guid2id(&vap->va_guuid, s, &len, 1);
2290 if (error == ENOSPC) {
2291 if (s != sbuf) {
2292 FREE(s, M_TEMP);
2293 s = sbuf;
2294 }
2295 len += 8;
2296 MALLOC(s, char*, len, M_TEMP, M_WAITOK);
2297 if (s) {
2298 slen = len;
2299 error = nfs4_guid2id(&vap->va_guuid, s, &len, 1);
2300 } else {
2301 error = ENOMEM;
2302 }
2303 }
2304 nfsm_chain_add_name(error, nmc, s, len, nmp);
2305 attrbytes += NFSX_UNSIGNED + nfsm_rndup(len);
2306 }
2307 // NFS_BITMAP_SET(bitmap, NFS_FATTR_SYSTEM)
2308 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_ACCESS_SET)) {
2309 if (vap->va_vaflags & VA_UTIMES_NULL) {
2310 nfsm_chain_add_32(error, nmc, NFS4_TIME_SET_TO_SERVER);
2311 attrbytes += NFSX_UNSIGNED;
2312 } else {
2313 nfsm_chain_add_32(error, nmc, NFS4_TIME_SET_TO_CLIENT);
2314 nfsm_chain_add_64(error, nmc, vap->va_access_time.tv_sec);
2315 nfsm_chain_add_32(error, nmc, vap->va_access_time.tv_nsec);
2316 attrbytes += 4*NFSX_UNSIGNED;
2317 }
2318 }
2319 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_BACKUP)) {
2320 nfsm_chain_add_64(error, nmc, vap->va_backup_time.tv_sec);
2321 nfsm_chain_add_32(error, nmc, vap->va_backup_time.tv_nsec);
2322 attrbytes += 3*NFSX_UNSIGNED;
2323 }
2324 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_CREATE)) {
2325 nfsm_chain_add_64(error, nmc, vap->va_create_time.tv_sec);
2326 nfsm_chain_add_32(error, nmc, vap->va_create_time.tv_nsec);
2327 attrbytes += 3*NFSX_UNSIGNED;
2328 }
2329 if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_TIME_MODIFY_SET)) {
2330 if (vap->va_vaflags & VA_UTIMES_NULL) {
2331 nfsm_chain_add_32(error, nmc, NFS4_TIME_SET_TO_SERVER);
2332 attrbytes += NFSX_UNSIGNED;
2333 } else {
2334 nfsm_chain_add_32(error, nmc, NFS4_TIME_SET_TO_CLIENT);
2335 nfsm_chain_add_64(error, nmc, vap->va_modify_time.tv_sec);
2336 nfsm_chain_add_32(error, nmc, vap->va_modify_time.tv_nsec);
2337 attrbytes += 4*NFSX_UNSIGNED;
2338 }
2339 }
2340 nfsmout_if(error);
2341 /* Now, set the attribute data length */
2342 *pattrbytes = txdr_unsigned(attrbytes);
2343 nfsmout:
2344 if (s && (s != sbuf))
2345 FREE(s, M_TEMP);
2346 return (error);
2347 }
2348
2349 /*
2350 * Got the given error and need to start recovery (if not already started).
2351 * Note: nmp must be locked!
2352 */
2353 void
2354 nfs_need_recover(struct nfsmount *nmp, int error)
2355 {
2356 int wake = !(nmp->nm_state & NFSSTA_RECOVER);
2357
2358 nmp->nm_state |= NFSSTA_RECOVER;
2359 if ((error == NFSERR_ADMIN_REVOKED) ||
2360 (error == NFSERR_EXPIRED) ||
2361 (error == NFSERR_STALE_CLIENTID))
2362 nmp->nm_state |= NFSSTA_RECOVER_EXPIRED;
2363 if (wake)
2364 nfs_mount_sock_thread_wake(nmp);
2365 }
2366
2367 /*
2368 * After recovery due to state expiry, check each node and
2369 * drop any lingering delegation we thought we had.
2370 *
2371 * If a node has an open that is not lost and is not marked
2372 * for reopen, then we hold onto any delegation because it is
2373 * likely newly-granted.
2374 */
2375 static void
2376 nfs4_expired_check_delegation(nfsnode_t np, vfs_context_t ctx)
2377 {
2378 struct nfsmount *nmp = NFSTONMP(np);
2379 struct nfs_open_file *nofp;
2380 int drop = 1;
2381
2382 if ((np->n_flag & NREVOKE) || !(np->n_openflags & N_DELEG_MASK))
2383 return;
2384
2385 lck_mtx_lock(&np->n_openlock);
2386
2387 TAILQ_FOREACH(nofp, &np->n_opens, nof_link) {
2388 if (!nofp->nof_opencnt)
2389 continue;
2390 if (nofp->nof_flags & NFS_OPEN_FILE_LOST)
2391 continue;
2392 if (nofp->nof_flags & NFS_OPEN_FILE_REOPEN)
2393 continue;
2394 /* we have an open that is not lost and not marked for reopen */
2395 // XXX print out what's keeping this node from dropping the delegation.
2396 NP(nofp->nof_np, "nfs4_expired_check_delegation: !drop: opencnt %d flags 0x%x access %d %d mmap %d %d",
2397 nofp->nof_opencnt, nofp->nof_flags,
2398 nofp->nof_access, nofp->nof_deny,
2399 nofp->nof_mmap_access, nofp->nof_mmap_deny);
2400 drop = 0;
2401 break;
2402 }
2403
2404 if (drop) {
2405 /* need to drop a delegation */
2406 if (np->n_dreturn.tqe_next != NFSNOLIST) {
2407 /* remove this node from the delegation return list */
2408 lck_mtx_lock(&nmp->nm_lock);
2409 if (np->n_dreturn.tqe_next != NFSNOLIST) {
2410 TAILQ_REMOVE(&nmp->nm_dreturnq, np, n_dreturn);
2411 np->n_dreturn.tqe_next = NFSNOLIST;
2412 }
2413 lck_mtx_unlock(&nmp->nm_lock);
2414 }
2415 if (np->n_openflags & N_DELEG_MASK) {
2416 np->n_openflags &= ~N_DELEG_MASK;
2417 lck_mtx_lock(&nmp->nm_lock);
2418 if (np->n_dlink.tqe_next != NFSNOLIST) {
2419 TAILQ_REMOVE(&nmp->nm_delegations, np, n_dlink);
2420 np->n_dlink.tqe_next = NFSNOLIST;
2421 }
2422 lck_mtx_unlock(&nmp->nm_lock);
2423 nfs4_delegreturn_rpc(nmp, np->n_fhp, np->n_fhsize, &np->n_dstateid,
2424 0, vfs_context_thread(ctx), vfs_context_ucred(ctx));
2425 }
2426 }
2427
2428 lck_mtx_unlock(&np->n_openlock);
2429 }
2430
2431 /*
2432 * Recover state for an NFS mount.
2433 *
2434 * Iterates over all open files, reclaiming opens and lock state.
2435 */
2436 void
2437 nfs_recover(struct nfsmount *nmp)
2438 {
2439 struct timespec ts = { 1, 0 };
2440 int error, lost, reopen;
2441 struct nfs_open_owner *noop;
2442 struct nfs_open_file *nofp;
2443 struct nfs_file_lock *nflp, *nextnflp;
2444 struct nfs_lock_owner *nlop;
2445 thread_t thd = current_thread();
2446 nfsnode_t np, nextnp;
2447 struct timeval now;
2448
2449 restart:
2450 error = 0;
2451 lck_mtx_lock(&nmp->nm_lock);
2452 /*
2453 * First, wait for the state inuse count to go to zero so
2454 * we know there are no state operations in progress.
2455 */
2456 do {
2457 if ((error = nfs_sigintr(nmp, NULL, NULL, 1)))
2458 break;
2459 if (!(nmp->nm_sockflags & NMSOCK_READY))
2460 error = EPIPE;
2461 if (nmp->nm_state & (NFSSTA_FORCE|NFSSTA_DEAD))
2462 error = ENXIO;
2463 if (nmp->nm_sockflags & NMSOCK_UNMOUNT)
2464 error = ENXIO;
2465 if (error)
2466 break;
2467 if (nmp->nm_stateinuse)
2468 msleep(&nmp->nm_stateinuse, &nmp->nm_lock, (PZERO-1), "nfsrecoverstartwait", &ts);
2469 } while (nmp->nm_stateinuse);
2470 if (error) {
2471 if (error == EPIPE)
2472 printf("nfs recovery reconnecting for %s, 0x%x\n", vfs_statfs(nmp->nm_mountp)->f_mntfromname, nmp->nm_stategenid);
2473 else
2474 printf("nfs recovery aborted for %s, 0x%x\n", vfs_statfs(nmp->nm_mountp)->f_mntfromname, nmp->nm_stategenid);
2475 lck_mtx_unlock(&nmp->nm_lock);
2476 return;
2477 }
2478
2479 microuptime(&now);
2480 if (now.tv_sec == nmp->nm_recover_start) {
2481 printf("nfs recovery throttled for %s, 0x%x\n", vfs_statfs(nmp->nm_mountp)->f_mntfromname, nmp->nm_stategenid);
2482 lck_mtx_unlock(&nmp->nm_lock);
2483 tsleep(nfs_recover, (PZERO-1), "nfsrecoverrestart", hz);
2484 goto restart;
2485 }
2486 nmp->nm_recover_start = now.tv_sec;
2487 if (++nmp->nm_stategenid == 0)
2488 ++nmp->nm_stategenid;
2489 printf("nfs recovery started for %s, 0x%x\n", vfs_statfs(nmp->nm_mountp)->f_mntfromname, nmp->nm_stategenid);
2490 lck_mtx_unlock(&nmp->nm_lock);
2491
2492 /* for each open owner... */
2493 TAILQ_FOREACH(noop, &nmp->nm_open_owners, noo_link) {
2494 /* for each of its opens... */
2495 TAILQ_FOREACH(nofp, &noop->noo_opens, nof_oolink) {
2496 if (!nofp->nof_access || (nofp->nof_flags & NFS_OPEN_FILE_LOST) || (nofp->nof_np->n_flag & NREVOKE))
2497 continue;
2498 lost = reopen = 0;
2499 /* for NFSv2/v3, just skip straight to lock reclaim */
2500 if (nmp->nm_vers < NFS_VER4)
2501 goto reclaim_locks;
2502 if (nofp->nof_rw_drw)
2503 error = nfs4_open_reclaim_rpc(nofp, NFS_OPEN_SHARE_ACCESS_BOTH, NFS_OPEN_SHARE_DENY_BOTH);
2504 if (!error && nofp->nof_w_drw)
2505 error = nfs4_open_reclaim_rpc(nofp, NFS_OPEN_SHARE_ACCESS_WRITE, NFS_OPEN_SHARE_DENY_BOTH);
2506 if (!error && nofp->nof_r_drw)
2507 error = nfs4_open_reclaim_rpc(nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_BOTH);
2508 if (!error && nofp->nof_rw_dw)
2509 error = nfs4_open_reclaim_rpc(nofp, NFS_OPEN_SHARE_ACCESS_BOTH, NFS_OPEN_SHARE_DENY_WRITE);
2510 if (!error && nofp->nof_w_dw)
2511 error = nfs4_open_reclaim_rpc(nofp, NFS_OPEN_SHARE_ACCESS_WRITE, NFS_OPEN_SHARE_DENY_WRITE);
2512 if (!error && nofp->nof_r_dw)
2513 error = nfs4_open_reclaim_rpc(nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_WRITE);
2514 /*
2515 * deny-none opens with no locks can just be reopened (later) if reclaim fails.
2516 */
2517 if (!error && nofp->nof_rw) {
2518 error = nfs4_open_reclaim_rpc(nofp, NFS_OPEN_SHARE_ACCESS_BOTH, NFS_OPEN_SHARE_DENY_NONE);
2519 if ((error == NFSERR_ADMIN_REVOKED) || (error == NFSERR_EXPIRED) || (error == NFSERR_NO_GRACE)) {
2520 reopen = error;
2521 error = 0;
2522 }
2523 }
2524 if (!error && !reopen && nofp->nof_w) {
2525 error = nfs4_open_reclaim_rpc(nofp, NFS_OPEN_SHARE_ACCESS_WRITE, NFS_OPEN_SHARE_DENY_NONE);
2526 if ((error == NFSERR_ADMIN_REVOKED) || (error == NFSERR_EXPIRED) || (error == NFSERR_NO_GRACE)) {
2527 reopen = error;
2528 error = 0;
2529 }
2530 }
2531 if (!error && !reopen && nofp->nof_r) {
2532 error = nfs4_open_reclaim_rpc(nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_NONE);
2533 if ((error == NFSERR_ADMIN_REVOKED) || (error == NFSERR_EXPIRED) || (error == NFSERR_NO_GRACE)) {
2534 reopen = error;
2535 error = 0;
2536 }
2537 }
2538
2539 /*
2540 * If we hold delegated state but we don't have any non-delegated opens,
2541 * then we should attempt to claim that state now (but don't return the
2542 * delegation unless asked to).
2543 */
2544 if ((nofp->nof_d_rw_drw || nofp->nof_d_w_drw || nofp->nof_d_r_drw ||
2545 nofp->nof_d_rw_dw || nofp->nof_d_w_dw || nofp->nof_d_r_dw ||
2546 nofp->nof_d_rw || nofp->nof_d_w || nofp->nof_d_r) &&
2547 (!nofp->nof_rw_drw && !nofp->nof_w_drw && !nofp->nof_r_drw &&
2548 !nofp->nof_rw_dw && !nofp->nof_w_dw && !nofp->nof_r_dw &&
2549 !nofp->nof_rw && !nofp->nof_w && !nofp->nof_r)) {
2550 if (!error && !nfs_open_state_set_busy(nofp->nof_np, NULL)) {
2551 error = nfs4_claim_delegated_state_for_node(nofp->nof_np, R_RECOVER);
2552 if (!error && (nofp->nof_flags & NFS_OPEN_FILE_REOPEN))
2553 reopen = EAGAIN;
2554 nfs_open_state_clear_busy(nofp->nof_np);
2555 /* if claim didn't go well, we may need to return delegation now */
2556 if (nofp->nof_np->n_openflags & N_DELEG_RETURN) {
2557 nfs4_delegation_return(nofp->nof_np, R_RECOVER, thd, noop->noo_cred);
2558 if (!(nmp->nm_sockflags & NMSOCK_READY))
2559 error = ETIMEDOUT; /* looks like we need a reconnect */
2560 }
2561 }
2562 }
2563
2564 /*
2565 * Handle any issue claiming open state.
2566 * Potential reopens need to first confirm that there are no locks.
2567 */
2568 if (error || reopen) {
2569 /* restart recovery? */
2570 if ((error == ETIMEDOUT) || nfs_mount_state_error_should_restart(error)) {
2571 if (error == ETIMEDOUT)
2572 nfs_need_reconnect(nmp);
2573 tsleep(nfs_recover, (PZERO-1), "nfsrecoverrestart", hz);
2574 printf("nfs recovery restarting for %s, 0x%x, error %d\n",
2575 vfs_statfs(nmp->nm_mountp)->f_mntfromname, nmp->nm_stategenid, error);
2576 goto restart;
2577 }
2578 if (reopen && (nfs_check_for_locks(noop, nofp) == 0)) {
2579 /* just reopen the file on next access */
2580 NP(nofp->nof_np, "nfs_recover: %d, need reopen for %d %p 0x%x", reopen,
2581 kauth_cred_getuid(noop->noo_cred), nofp->nof_np, nofp->nof_np->n_flag);
2582 lck_mtx_lock(&nofp->nof_lock);
2583 nofp->nof_flags |= NFS_OPEN_FILE_REOPEN;
2584 lck_mtx_unlock(&nofp->nof_lock);
2585 } else {
2586 /* open file state lost */
2587 if (reopen)
2588 NP(nofp->nof_np, "nfs_recover: %d, can't reopen because of locks %d %p", reopen,
2589 kauth_cred_getuid(noop->noo_cred), nofp->nof_np);
2590 lost = 1;
2591 error = 0;
2592 reopen = 0;
2593 }
2594 } else {
2595 /* no error, so make sure the reopen flag isn't set */
2596 lck_mtx_lock(&nofp->nof_lock);
2597 nofp->nof_flags &= ~NFS_OPEN_FILE_REOPEN;
2598 lck_mtx_unlock(&nofp->nof_lock);
2599 }
2600
2601 /*
2602 * Scan this node's lock owner list for entries with this open owner,
2603 * then walk the lock owner's held lock list recovering each lock.
2604 */
2605 reclaim_locks:
2606 TAILQ_FOREACH(nlop, &nofp->nof_np->n_lock_owners, nlo_link) {
2607 if (lost || reopen)
2608 break;
2609 if (nlop->nlo_open_owner != noop)
2610 continue;
2611 TAILQ_FOREACH_SAFE(nflp, &nlop->nlo_locks, nfl_lolink, nextnflp) {
2612 /* skip dead & blocked lock requests (shouldn't be any in the held lock list) */
2613 if (nflp->nfl_flags & (NFS_FILE_LOCK_DEAD|NFS_FILE_LOCK_BLOCKED))
2614 continue;
2615 /* skip delegated locks */
2616 if (nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED)
2617 continue;
2618 error = nmp->nm_funcs->nf_setlock_rpc(nofp->nof_np, nofp, nflp, 1, R_RECOVER, thd, noop->noo_cred);
2619 if (error)
2620 NP(nofp->nof_np, "nfs: lock reclaim (0x%llx, 0x%llx) %s %d",
2621 nflp->nfl_start, nflp->nfl_end,
2622 error ? "failed" : "succeeded", error);
2623 if (!error)
2624 continue;
2625 /* restart recovery? */
2626 if ((error == ETIMEDOUT) || nfs_mount_state_error_should_restart(error)) {
2627 if (error == ETIMEDOUT)
2628 nfs_need_reconnect(nmp);
2629 tsleep(nfs_recover, (PZERO-1), "nfsrecoverrestart", hz);
2630 printf("nfs recovery restarting for %s, 0x%x, error %d\n",
2631 vfs_statfs(nmp->nm_mountp)->f_mntfromname, nmp->nm_stategenid, error);
2632 goto restart;
2633 }
2634 /* lock state lost - attempt to close file */
2635 lost = 1;
2636 error = 0;
2637 break;
2638 }
2639 }
2640
2641 /*
2642 * If we've determined that we need to reopen the file then we probably
2643 * didn't receive any delegation we think we hold. We should attempt to
2644 * return that delegation (and claim any delegated state).
2645 *
2646 * If we hold a delegation that is marked for return, then we should
2647 * return it now.
2648 */
2649 if ((nofp->nof_np->n_openflags & N_DELEG_RETURN) ||
2650 (reopen && (nofp->nof_np->n_openflags & N_DELEG_MASK))) {
2651 nfs4_delegation_return(nofp->nof_np, R_RECOVER, thd, noop->noo_cred);
2652 if (!(nmp->nm_sockflags & NMSOCK_READY)) {
2653 /* looks like we need a reconnect */
2654 tsleep(nfs_recover, (PZERO-1), "nfsrecoverrestart", hz);
2655 printf("nfs recovery restarting for %s, 0x%x, error %d\n",
2656 vfs_statfs(nmp->nm_mountp)->f_mntfromname, nmp->nm_stategenid, error);
2657 goto restart;
2658 }
2659 }
2660
2661 if (lost) {
2662 /* revoke open file state */
2663 NP(nofp->nof_np, "nfs_recover: state lost for %d %p 0x%x",
2664 kauth_cred_getuid(noop->noo_cred), nofp->nof_np, nofp->nof_np->n_flag);
2665 nfs_revoke_open_state_for_node(nofp->nof_np);
2666 }
2667 }
2668 }
2669
2670 if (!error) {
2671 /* If state expired, make sure we're not holding onto any stale delegations */
2672 lck_mtx_lock(&nmp->nm_lock);
2673 if ((nmp->nm_vers >= NFS_VER4) && (nmp->nm_state & NFSSTA_RECOVER_EXPIRED)) {
2674 recheckdeleg:
2675 TAILQ_FOREACH_SAFE(np, &nmp->nm_delegations, n_dlink, nextnp) {
2676 lck_mtx_unlock(&nmp->nm_lock);
2677 nfs4_expired_check_delegation(np, vfs_context_kernel());
2678 lck_mtx_lock(&nmp->nm_lock);
2679 if (nextnp == NFSNOLIST)
2680 goto recheckdeleg;
2681 }
2682 }
2683 nmp->nm_state &= ~(NFSSTA_RECOVER|NFSSTA_RECOVER_EXPIRED);
2684 wakeup(&nmp->nm_state);
2685 printf("nfs recovery completed for %s, 0x%x\n",
2686 vfs_statfs(nmp->nm_mountp)->f_mntfromname, nmp->nm_stategenid);
2687 lck_mtx_unlock(&nmp->nm_lock);
2688 } else {
2689 printf("nfs recovery failed for %s, 0x%x, error %d\n",
2690 vfs_statfs(nmp->nm_mountp)->f_mntfromname, nmp->nm_stategenid, error);
2691 }
2692 }
mirror of XNU