1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
24 */
25
26 /*
27 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
28 * Use is subject to license terms.
29 */
30
31 #include <sys/param.h>
32 #include <sys/types.h>
33 #include <sys/systm.h>
34 #include <sys/cred.h>
35 #include <sys/buf.h>
36 #include <sys/vfs.h>
37 #include <sys/vnode.h>
38 #include <sys/uio.h>
39 #include <sys/errno.h>
40 #include <sys/sysmacros.h>
41 #include <sys/statvfs.h>
42 #include <sys/kmem.h>
43 #include <sys/dirent.h>
44 #include <rpc/types.h>
45 #include <rpc/auth.h>
46 #include <rpc/rpcsec_gss.h>
47 #include <rpc/svc.h>
48 #include <sys/strsubr.h>
49 #include <sys/strsun.h>
50 #include <sys/sdt.h>
51
52 #include <nfs/nfs.h>
53 #include <nfs/export.h>
54 #include <nfs/nfs4.h>
55 #include <nfs/nfs_cmd.h>
56
57
58 /*
59 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent.
60 * This is used to return NFS4ERR_TOOSMALL when clients specify
61 * maxcount that isn't large enough to hold the smallest possible
62 * XDR encoded dirent.
63 *
64 * sizeof cookie (8 bytes) +
65 * sizeof name_len (4 bytes) +
66 * sizeof smallest (padded) name (4 bytes) +
67 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4
68 * sizeof attrlist4_len (4 bytes) +
69 * sizeof next boolean (4 bytes)
70 *
71 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing
72 * the smallest possible entry4 (assumes no attrs requested).
73 * sizeof nfsstat4 (4 bytes) +
74 * sizeof verifier4 (8 bytes) +
75 * sizeof entsecond_to_ry4list bool (4 bytes) +
76 * sizeof entry4 (36 bytes) +
77 * sizeof eof bool (4 bytes)
78 *
79 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to
80 * VOP_READDIR. Its value is the size of the maximum possible dirent
81 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent
82 * required for a given name length. MAXNAMELEN is the maximum
83 * filename length allowed in Solaris. The first two DIRENT64_RECLEN()
84 * macros are to allow for . and .. entries -- just a minor tweak to try
85 * and guarantee that buffer we give to VOP_READDIR will be large enough
86 * to hold ., .., and the largest possible solaris dirent64.
87 */
88 #define RFS4_MINLEN_ENTRY4 36
89 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4)
90 #define RFS4_MINLEN_RDDIR_BUF \
91 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN))
92
93
94 #ifdef nextdp
95 #undef nextdp
96 #endif
97 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen))
98
99 verifier4 Readdir4verf = 0x0;
100
101 static nfs_ftype4 vt_to_nf4[] = {
102 0, NF4REG, NF4DIR, NF4BLK, NF4CHR, NF4LNK, NF4FIFO, 0, 0, NF4SOCK, 0
103 };
104
105 int
nfs4_readdir_getvp(vnode_t * dvp,char * d_name,vnode_t ** vpp,struct exportinfo ** exi,struct svc_req * req,struct compound_state * cs,int expseudo)106 nfs4_readdir_getvp(vnode_t *dvp, char *d_name, vnode_t **vpp,
107 struct exportinfo **exi, struct svc_req *req, struct compound_state *cs,
108 int expseudo)
109 {
110 int error;
111 int ismntpt;
112 fid_t fid;
113 vnode_t *vp, *pre_tvp;
114 nfsstat4 status;
115 struct exportinfo *newexi, *saveexi;
116 cred_t *scr;
117
118 *vpp = vp = NULL;
119
120 if (error = VOP_LOOKUP(dvp, d_name, &vp, NULL, 0, NULL, cs->cr,
121 NULL, NULL, NULL))
122 return (error);
123
124 /*
125 * If the directory is a referral point, don't return the
126 * attrs, instead set rdattr_error to MOVED.
127 */
128 if (vn_is_nfs_reparse(vp, cs->cr) && !client_is_downrev(req)) {
129 VN_RELE(vp);
130 DTRACE_PROBE2(nfs4serv__func__referral__moved,
131 vnode_t *, vp, char *, "nfs4_readdir_getvp");
132 return (NFS4ERR_MOVED);
133 }
134
135 /* Is this object mounted upon? */
136 ismntpt = vn_ismntpt(vp);
137
138 /*
139 * Nothing more to do if object is not a mount point or
140 * a possible LOFS shadow of an LOFS mount (which won't
141 * have v_vfsmountedhere set)
142 */
143 if (ismntpt == 0 && dvp->v_vfsp == vp->v_vfsp && expseudo == 0) {
144 *vpp = vp;
145 return (0);
146 }
147
148 if (ismntpt) {
149 /*
150 * Something is mounted here. Traverse and manage the
151 * namespace
152 */
153 pre_tvp = vp;
154 VN_HOLD(pre_tvp);
155
156 if ((error = traverse(&vp)) != 0) {
157 VN_RELE(vp);
158 VN_RELE(pre_tvp);
159 return (error);
160 }
161 if (vn_is_nfs_reparse(vp, cs->cr)) {
162 VN_RELE(vp);
163 VN_RELE(pre_tvp);
164 DTRACE_PROBE2(nfs4serv__func__referral__moved,
165 vnode_t *, vp, char *, "nfs4_readdir_getvp");
166 return (NFS4ERR_MOVED);
167 }
168 }
169
170 bzero(&fid, sizeof (fid));
171 fid.fid_len = MAXFIDSZ;
172
173 /*
174 * If VOP_FID not supported by underlying fs (mntfs, procfs,
175 * etc.), then return attrs for stub instead of VROOT object.
176 * If it fails for any other reason, then return the error.
177 */
178 if (error = VOP_FID(vp, &fid, NULL)) {
179 if (ismntpt == 0) {
180 VN_RELE(vp);
181 return (error);
182 }
183
184 if (error != ENOSYS && error != ENOTSUP) {
185 VN_RELE(vp);
186 VN_RELE(pre_tvp);
187 return (error);
188 }
189 /* go back to vnode that is "under" mount */
190 VN_RELE(vp);
191 *vpp = pre_tvp;
192 return (0);
193 }
194
195 newexi = checkexport(&vp->v_vfsp->vfs_fsid, &fid, vp);
196 if (newexi == NULL) {
197 if (ismntpt == 0) {
198 *vpp = vp;
199 } else {
200 VN_RELE(vp);
201 *vpp = pre_tvp;
202 }
203 return (0);
204 }
205
206 if (ismntpt)
207 VN_RELE(pre_tvp);
208
209 /* Save the exi and present the new one to checkauth4() */
210 saveexi = cs->exi;
211 cs->exi = newexi;
212
213 /* Get the right cred like lookup does */
214 scr = cs->cr;
215 cs->cr = crdup(cs->basecr);
216
217 status = call_checkauth4(cs, req);
218
219 crfree(cs->cr);
220 cs->cr = scr;
221 cs->exi = saveexi;
222
223 /* Reset what call_checkauth4() may have set */
224 *cs->statusp = NFS4_OK;
225
226 if (status != NFS4_OK) {
227 VN_RELE(vp);
228 exi_rele(newexi);
229 if (status == NFS4ERR_DELAY)
230 status = NFS4ERR_ACCESS;
231 return (status);
232 }
233 *vpp = vp;
234 *exi = newexi;
235
236 return (0);
237 }
238
239 /* This is the set of pathconf data for vfs */
240 typedef struct {
241 uint64_t maxfilesize;
242 uint32_t maxlink;
243 uint32_t maxname;
244 } rfs4_pc_encode_t;
245
246
247 static int
rfs4_get_pc_encode(vnode_t * vp,rfs4_pc_encode_t * pce,bitmap4 ar,cred_t * cr)248 rfs4_get_pc_encode(vnode_t *vp, rfs4_pc_encode_t *pce, bitmap4 ar, cred_t *cr)
249 {
250 int error;
251 ulong_t pc_val;
252
253 pce->maxfilesize = 0;
254 pce->maxlink = 0;
255 pce->maxname = 0;
256
257 if (ar & FATTR4_MAXFILESIZE_MASK) {
258 /* Maximum File Size */
259 error = VOP_PATHCONF(vp, _PC_FILESIZEBITS, &pc_val, cr, NULL);
260 if (error)
261 return (error);
262
263 /*
264 * If the underlying file system does not support
265 * _PC_FILESIZEBITS, return a reasonable default. Note that
266 * error code on VOP_PATHCONF will be 0, even if the underlying
267 * file system does not support _PC_FILESIZEBITS.
268 */
269 if (pc_val == (ulong_t)-1) {
270 pce->maxfilesize = MAXOFF32_T;
271 } else {
272 if (pc_val >= (sizeof (uint64_t) * 8))
273 pce->maxfilesize = INT64_MAX;
274 else
275 pce->maxfilesize = ((1LL << (pc_val - 1)) - 1);
276 }
277 }
278
279 if (ar & FATTR4_MAXLINK_MASK) {
280 /* Maximum Link Count */
281 error = VOP_PATHCONF(vp, _PC_LINK_MAX, &pc_val, cr, NULL);
282 if (error)
283 return (error);
284
285 pce->maxlink = pc_val;
286 }
287
288 if (ar & FATTR4_MAXNAME_MASK) {
289 /* Maximum Name Length */
290 error = VOP_PATHCONF(vp, _PC_NAME_MAX, &pc_val, cr, NULL);
291 if (error)
292 return (error);
293
294 pce->maxname = pc_val;
295 }
296
297 return (0);
298 }
299
300 /* This is the set of statvfs data that is ready for encoding */
301 typedef struct {
302 uint64_t space_avail;
303 uint64_t space_free;
304 uint64_t space_total;
305 u_longlong_t fa;
306 u_longlong_t ff;
307 u_longlong_t ft;
308 } rfs4_sb_encode_t;
309
310 static int
rfs4_get_sb_encode(vfs_t * vfsp,rfs4_sb_encode_t * psbe)311 rfs4_get_sb_encode(vfs_t *vfsp, rfs4_sb_encode_t *psbe)
312 {
313 int error;
314 struct statvfs64 sb;
315
316 /* Grab the per filesystem info */
317 if (error = VFS_STATVFS(vfsp, &sb)) {
318 return (error);
319 }
320
321 /* Calculate space available */
322 if (sb.f_bavail != (fsblkcnt64_t)-1) {
323 psbe->space_avail =
324 (fattr4_space_avail) sb.f_frsize *
325 (fattr4_space_avail) sb.f_bavail;
326 } else {
327 psbe->space_avail =
328 (fattr4_space_avail) sb.f_bavail;
329 }
330
331 /* Calculate space free */
332 if (sb.f_bfree != (fsblkcnt64_t)-1) {
333 psbe->space_free =
334 (fattr4_space_free) sb.f_frsize *
335 (fattr4_space_free) sb.f_bfree;
336 } else {
337 psbe->space_free =
338 (fattr4_space_free) sb.f_bfree;
339 }
340
341 /* Calculate space total */
342 if (sb.f_blocks != (fsblkcnt64_t)-1) {
343 psbe->space_total =
344 (fattr4_space_total) sb.f_frsize *
345 (fattr4_space_total) sb.f_blocks;
346 } else {
347 psbe->space_total =
348 (fattr4_space_total) sb.f_blocks;
349 }
350
351 /* For use later on attr encode */
352 psbe->fa = sb.f_favail;
353 psbe->ff = sb.f_ffree;
354 psbe->ft = sb.f_files;
355
356 return (0);
357 }
358
359 /*
360 * Macros to handle if we have don't have enough space for the requested
361 * attributes and this is the first entry and the
362 * requested attributes are more than the minimal useful
363 * set, reset the attributes to the minimal set and
364 * retry the encoding. If the client has asked for both
365 * mounted_on_fileid and fileid, prefer mounted_on_fileid.
366 */
367 #define MINIMAL_RD_ATTRS \
368 (FATTR4_MOUNTED_ON_FILEID_MASK| \
369 FATTR4_FILEID_MASK| \
370 FATTR4_RDATTR_ERROR_MASK)
371
372 #define MINIMIZE_ATTR_MASK(m) { \
373 if ((m) & FATTR4_MOUNTED_ON_FILEID_MASK) \
374 (m) &= FATTR4_RDATTR_ERROR_MASK|FATTR4_MOUNTED_ON_FILEID_MASK;\
375 else \
376 (m) &= FATTR4_RDATTR_ERROR_MASK|FATTR4_FILEID_MASK; \
377 }
378
379 #define IS_MIN_ATTR_MASK(m) (((m) & ~MINIMAL_RD_ATTRS) == 0)
380 /*
381 * If readdir only needs to return FILEID, we can take it from the
382 * dirent struct and save doing the lookup.
383 */
384 /* ARGSUSED */
385 void
rfs4_op_readdir(nfs_argop4 * argop,nfs_resop4 * resop,struct svc_req * req,struct compound_state * cs)386 rfs4_op_readdir(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
387 struct compound_state *cs)
388 {
389 READDIR4args *args = &argop->nfs_argop4_u.opreaddir;
390 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir;
391 struct exportinfo *newexi = NULL;
392 int error;
393 mblk_t *mp;
394 uint_t mpcount;
395 int alloc_err = 0;
396 vnode_t *dvp = cs->vp;
397 vnode_t *vp;
398 vattr_t va;
399 struct dirent64 *dp;
400 rfs4_sb_encode_t dsbe, sbe;
401 int vfs_different;
402 int rddir_data_len, rddir_result_size;
403 caddr_t rddir_data;
404 offset_t rddir_next_offset;
405 int dircount;
406 int no_space;
407 int iseofdir;
408 uint_t eof;
409 struct iovec iov;
410 struct uio uio;
411 int tsize;
412 int check_visible;
413 struct exp_visible *visp;
414
415 uint32_t *ptr, *ptr_redzone;
416 uint32_t *beginning_ptr;
417 uint32_t *lastentry_ptr;
418 uint32_t *attrmask_ptr;
419 uint32_t *attr_offset_ptr;
420 uint32_t attr_length;
421 uint32_t rndup;
422 uint32_t namelen;
423 uint32_t rddirattr_error = 0;
424 int nents;
425 bitmap4 ar = args->attr_request & NFS4_SRV_RDDIR_SUPPORTED_ATTRS;
426 bitmap4 ae;
427 rfs4_pc_encode_t dpce, pce;
428 ulong_t pc_val;
429 uint64_t maxread;
430 uint64_t maxwrite;
431 uint_t true = TRUE;
432 uint_t false = FALSE;
433 uid_t lastuid;
434 gid_t lastgid;
435 int lu_set, lg_set;
436 utf8string owner, group;
437 int owner_error, group_error;
438 struct sockaddr *ca;
439 char *name = NULL;
440
441 DTRACE_NFSV4_2(op__readdir__start, struct compound_state *, cs,
442 READDIR4args *, args);
443
444 lu_set = lg_set = 0;
445 owner.utf8string_len = group.utf8string_len = 0;
446 owner.utf8string_val = group.utf8string_val = NULL;
447
448 resp->mblk = NULL;
449
450 /* Maximum read and write size */
451 maxread = maxwrite = rfs4_tsize(req);
452
453 if (dvp == NULL) {
454 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
455 goto out;
456 }
457
458 /*
459 * If there is an unshared filesystem mounted on this vnode,
460 * do not allow readdir in this directory.
461 */
462 if (vn_ismntpt(dvp)) {
463 *cs->statusp = resp->status = NFS4ERR_ACCESS;
464 goto out;
465 }
466
467 if (dvp->v_type != VDIR) {
468 *cs->statusp = resp->status = NFS4ERR_NOTDIR;
469 goto out;
470 }
471
472 if (args->maxcount <= RFS4_MINLEN_RDDIR4) {
473 *cs->statusp = resp->status = NFS4ERR_TOOSMALL;
474 goto out;
475 }
476
477 /*
478 * If write-only attrs are requested, then fail the readdir op
479 */
480 if (args->attr_request &
481 (FATTR4_TIME_MODIFY_SET_MASK | FATTR4_TIME_ACCESS_SET_MASK)) {
482 *cs->statusp = resp->status = NFS4ERR_INVAL;
483 goto out;
484 }
485
486 error = VOP_ACCESS(dvp, VREAD, 0, cs->cr, NULL);
487 if (error) {
488 *cs->statusp = resp->status = puterrno4(error);
489 goto out;
490 }
491
492 if (args->cookieverf != Readdir4verf) {
493 *cs->statusp = resp->status = NFS4ERR_NOT_SAME;
494 goto out;
495 }
496
497 /* Is there pseudo-fs work that is needed for this readdir? */
498 check_visible = PSEUDO(cs->exi) ||
499 ! is_exported_sec(cs->nfsflavor, cs->exi) ||
500 cs->access & CS_ACCESS_LIMITED;
501
502 /* Check the requested attributes and only do the work if needed */
503
504 if (ar & (FATTR4_MAXFILESIZE_MASK |
505 FATTR4_MAXLINK_MASK |
506 FATTR4_MAXNAME_MASK)) {
507 if (error = rfs4_get_pc_encode(cs->vp, &dpce, ar, cs->cr)) {
508 *cs->statusp = resp->status = puterrno4(error);
509 goto out;
510 }
511 pce = dpce;
512 }
513
514 /* If there is statvfs data requested, pick it up once */
515 if (ar &
516 (FATTR4_FILES_AVAIL_MASK |
517 FATTR4_FILES_FREE_MASK |
518 FATTR4_FILES_TOTAL_MASK |
519 FATTR4_FILES_AVAIL_MASK |
520 FATTR4_FILES_FREE_MASK |
521 FATTR4_FILES_TOTAL_MASK)) {
522 if (error = rfs4_get_sb_encode(dvp->v_vfsp, &dsbe)) {
523 *cs->statusp = resp->status = puterrno4(error);
524 goto out;
525 }
526 sbe = dsbe;
527 }
528
529 /*
530 * Max transfer size of the server is the absolute limite.
531 * If the client has decided to max out with something really
532 * tiny, then return toosmall. Otherwise, move forward and
533 * see if a single entry can be encoded.
534 */
535 tsize = rfs4_tsize(req);
536 if (args->maxcount > tsize)
537 args->maxcount = tsize;
538 else if (args->maxcount < RFS4_MINLEN_RDDIR_BUF) {
539 if (args->maxcount < RFS4_MINLEN_ENTRY4) {
540 *cs->statusp = resp->status = NFS4ERR_TOOSMALL;
541 goto out;
542 }
543 }
544
545 /*
546 * How large should the mblk be for outgoing encoding.
547 */
548 if (args->maxcount < MAXBSIZE)
549 mpcount = MAXBSIZE;
550 else
551 mpcount = args->maxcount;
552
553 /*
554 * mp will contain the data to be sent out in the readdir reply.
555 * It will be freed after the reply has been sent.
556 * Let's roundup the data to a BYTES_PER_XDR_UNIX multiple,
557 * so that the call to xdrmblk_putmblk() never fails.
558 */
559 mp = allocb(RNDUP(mpcount), BPRI_MED);
560
561 if (mp == NULL) {
562 /*
563 * The allocation of the client's requested size has
564 * failed. It may be that the size is too large for
565 * current system utilization; step down to a "common"
566 * size and wait for the allocation to occur.
567 */
568 if (mpcount > MAXBSIZE)
569 args->maxcount = mpcount = MAXBSIZE;
570 mp = allocb_wait(RNDUP(mpcount), BPRI_MED,
571 STR_NOSIG, &alloc_err);
572 }
573
574 ASSERT(mp != NULL);
575 ASSERT(alloc_err == 0);
576
577 resp->mblk = mp;
578
579 ptr = beginning_ptr = (uint32_t *)mp->b_datap->db_base;
580
581 /*
582 * The "redzone" at the end of the encoding buffer is used
583 * to deal with xdr encoding length. Instead of checking
584 * each encoding of an attribute value before it is done,
585 * make the assumption that it will fit into the buffer and
586 * check occasionally.
587 *
588 * The largest block of attributes that are encoded without
589 * checking the redzone is 18 * BYTES_PER_XDR_UNIT (72 bytes)
590 * "round" to 128 as the redzone size.
591 */
592 if (args->maxcount < (mpcount - 128))
593 ptr_redzone =
594 (uint32_t *)(((char *)ptr) + RNDUP(args->maxcount));
595 else
596 ptr_redzone =
597 (uint32_t *)((((char *)ptr) + RNDUP(mpcount)) - 128);
598
599 /*
600 * Set the dircount; this will be used as the size for the
601 * readdir of the underlying filesystem. First make sure
602 * that it is large enough to do a reasonable readdir (client
603 * may have short changed us - it is an advisory number);
604 * then make sure that it isn't too large.
605 * After all of that, if maxcount is "small" then just use
606 * that for the dircount number.
607 */
608 dircount = (args->dircount < MAXBSIZE) ? MAXBSIZE : args->dircount;
609 dircount = (dircount > tsize) ? tsize : dircount;
610 if (dircount > args->maxcount)
611 dircount = args->maxcount;
612 if (args->maxcount <= MAXBSIZE) {
613 if (args->maxcount < RFS4_MINLEN_RDDIR_BUF)
614 dircount = RFS4_MINLEN_RDDIR_BUF;
615 else
616 dircount = args->maxcount;
617 }
618
619 /* number of entries fully encoded in outgoing buffer */
620 nents = 0;
621
622 /* ENCODE READDIR4res.cookieverf */
623 IXDR_PUT_HYPER(ptr, Readdir4verf);
624
625 rddir_data_len = dircount;
626 rddir_data = kmem_alloc(rddir_data_len, KM_NOSLEEP);
627 if (rddir_data == NULL) {
628 /* The allocation failed; downsize and wait for it this time */
629 if (rddir_data_len > MAXBSIZE)
630 rddir_data_len = dircount = MAXBSIZE;
631 rddir_data = kmem_alloc(rddir_data_len, KM_SLEEP);
632 }
633
634 rddir_next_offset = (offset_t)args->cookie;
635
636 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf;
637
638 readagain:
639
640 no_space = FALSE;
641 iseofdir = FALSE;
642
643 vp = NULL;
644
645 /* Move on to reading the directory contents */
646 iov.iov_base = rddir_data;
647 iov.iov_len = rddir_data_len;
648 uio.uio_iov = &iov;
649 uio.uio_iovcnt = 1;
650 uio.uio_segflg = UIO_SYSSPACE;
651 uio.uio_extflg = UIO_COPY_CACHED;
652 uio.uio_loffset = rddir_next_offset;
653 uio.uio_resid = rddir_data_len;
654
655 (void) VOP_RWLOCK(dvp, V_WRITELOCK_FALSE, NULL);
656
657 error = VOP_READDIR(dvp, &uio, cs->cr, &iseofdir, NULL, 0);
658
659 VOP_RWUNLOCK(dvp, V_WRITELOCK_FALSE, NULL);
660
661 if (error) {
662 kmem_free((caddr_t)rddir_data, rddir_data_len);
663 freeb(resp->mblk);
664 resp->mblk = NULL;
665 resp->data_len = 0;
666 *cs->statusp = resp->status = puterrno4(error);
667 goto out;
668 }
669
670
671 rddir_result_size = rddir_data_len - uio.uio_resid;
672
673 /* No data were read. Check if we reached the end of the directory. */
674 if (rddir_result_size == 0) {
675 /* encode the BOOLEAN marking no further entries */
676 IXDR_PUT_U_INT32(ptr, false);
677 /* encode the BOOLEAN signifying end of directory */
678 IXDR_PUT_U_INT32(ptr, iseofdir ? true : false);
679 resp->data_len = (char *)ptr - (char *)beginning_ptr;
680 resp->mblk->b_wptr += resp->data_len;
681 kmem_free((caddr_t)rddir_data, rddir_data_len);
682 *cs->statusp = resp->status = NFS4_OK;
683 goto out;
684 }
685
686 lastentry_ptr = ptr;
687 no_space = 0;
688 for (dp = (struct dirent64 *)rddir_data;
689 !no_space && rddir_result_size > 0; dp = nextdp(dp)) {
690
691 /* reset visp */
692 visp = NULL;
693
694 if (vp) {
695 VN_RELE(vp);
696 vp = NULL;
697 }
698
699 if (newexi != NULL) {
700 exi_rele(newexi);
701 newexi = NULL;
702 }
703
704 rddir_result_size -= dp->d_reclen;
705
706 /* skip "." and ".." entries */
707 if (dp->d_ino == 0 || NFS_IS_DOTNAME(dp->d_name)) {
708 rddir_next_offset = dp->d_off;
709 continue;
710 }
711
712 if (check_visible &&
713 !nfs_visible_inode(cs->exi, dp->d_ino, &visp)) {
714 rddir_next_offset = dp->d_off;
715 continue;
716 }
717
718 /*
719 * Only if the client requested attributes...
720 * If the VOP_LOOKUP fails ENOENT, then skip this entry
721 * for the readdir response. If there was another error,
722 * then set the rddirattr_error and the error will be
723 * encoded later in the "attributes" section.
724 */
725 ae = ar;
726 if (ar == 0)
727 goto reencode_attrs;
728
729 error = nfs4_readdir_getvp(dvp, dp->d_name,
730 &vp, &newexi, req, cs,
731 visp != NULL ? visp->vis_exported : 0);
732 if (error == ENOENT) {
733 rddir_next_offset = dp->d_off;
734 continue;
735 }
736
737 rddirattr_error = error;
738
739 /*
740 * The vp obtained from above may be from a
741 * different filesystem mount and the vfs-like
742 * attributes should be obtained from that
743 * different vfs; only do this if appropriate.
744 */
745 if (vp &&
746 (vfs_different = (dvp->v_vfsp != vp->v_vfsp))) {
747 if (ar & (FATTR4_FILES_AVAIL_MASK |
748 FATTR4_FILES_FREE_MASK |
749 FATTR4_FILES_TOTAL_MASK |
750 FATTR4_FILES_AVAIL_MASK |
751 FATTR4_FILES_FREE_MASK |
752 FATTR4_FILES_TOTAL_MASK)) {
753 if (error =
754 rfs4_get_sb_encode(dvp->v_vfsp,
755 &sbe)) {
756 /* Remove attrs from encode */
757 ae &= ~(FATTR4_FILES_AVAIL_MASK |
758 FATTR4_FILES_FREE_MASK |
759 FATTR4_FILES_TOTAL_MASK |
760 FATTR4_FILES_AVAIL_MASK |
761 FATTR4_FILES_FREE_MASK |
762 FATTR4_FILES_TOTAL_MASK);
763 rddirattr_error = error;
764 }
765 }
766 if (ar & (FATTR4_MAXFILESIZE_MASK |
767 FATTR4_MAXLINK_MASK |
768 FATTR4_MAXNAME_MASK)) {
769 if (error = rfs4_get_pc_encode(cs->vp,
770 &pce, ar, cs->cr)) {
771 ar &= ~(FATTR4_MAXFILESIZE_MASK |
772 FATTR4_MAXLINK_MASK |
773 FATTR4_MAXNAME_MASK);
774 rddirattr_error = error;
775 }
776 }
777 }
778
779 reencode_attrs:
780 /* encode the BOOLEAN for the existence of the next entry */
781 IXDR_PUT_U_INT32(ptr, true);
782 /* encode the COOKIE for the entry */
783 IXDR_PUT_U_HYPER(ptr, dp->d_off);
784
785 name = nfscmd_convname(ca, cs->exi, dp->d_name,
786 NFSCMD_CONV_OUTBOUND, MAXPATHLEN + 1);
787
788 if (name == NULL) {
789 rddir_next_offset = dp->d_off;
790 continue;
791 }
792 /* Calculate the dirent name length */
793 namelen = strlen(name);
794
795 rndup = RNDUP(namelen) / BYTES_PER_XDR_UNIT;
796
797 /* room for LENGTH + string ? */
798 if ((ptr + (1 + rndup)) > ptr_redzone) {
799 no_space = TRUE;
800 continue;
801 }
802
803 /* encode the LENGTH of the name */
804 IXDR_PUT_U_INT32(ptr, namelen);
805 /* encode the RNDUP FILL first */
806 ptr[rndup - 1] = 0;
807 /* encode the NAME of the entry */
808 bcopy(name, (char *)ptr, namelen);
809 /* now bump the ptr after... */
810 ptr += rndup;
811
812 if (name != dp->d_name)
813 kmem_free(name, MAXPATHLEN + 1);
814
815 /*
816 * Keep checking on the dircount to see if we have
817 * reached the limit; from the RFC, dircount is to be
818 * the XDR encoded limit of the cookie plus name.
819 * So the count is the name, XDR_UNIT of length for
820 * that name and 2 * XDR_UNIT bytes of cookie;
821 * However, use the regular DIRENT64 to match most
822 * client's APIs.
823 */
824 dircount -= DIRENT64_RECLEN(namelen);
825 if (nents != 0 && dircount < 0) {
826 no_space = TRUE;
827 continue;
828 }
829
830 /*
831 * Attributes requested?
832 * Gather up the attribute info and the previous VOP_LOOKUP()
833 * succeeded; if an error occurs on the VOP_GETATTR() then
834 * return just the error (again if it is requested).
835 * Note that the previous VOP_LOOKUP() could have failed
836 * itself which leaves this code without anything for
837 * a VOP_GETATTR().
838 * Also note that the readdir_attr_error is left in the
839 * encoding mask if requested and so is the mounted_on_fileid.
840 */
841 if (ae != 0) {
842 if (!vp) {
843 ae = ar & (FATTR4_RDATTR_ERROR_MASK |
844 FATTR4_MOUNTED_ON_FILEID_MASK);
845 } else {
846 va.va_mask = AT_ALL;
847 rddirattr_error =
848 VOP_GETATTR(vp, &va, 0, cs->cr, NULL);
849 if (rddirattr_error) {
850 ae = ar & (FATTR4_RDATTR_ERROR_MASK |
851 FATTR4_MOUNTED_ON_FILEID_MASK);
852 } else {
853 /*
854 * We may lie about the object
855 * type for a referral
856 */
857 if (vn_is_nfs_reparse(vp, cs->cr) &&
858 client_is_downrev(req))
859 va.va_type = VLNK;
860 }
861 }
862 }
863
864 /* START OF ATTRIBUTE ENCODING */
865
866 /* encode the LENGTH of the BITMAP4 array */
867 IXDR_PUT_U_INT32(ptr, 2);
868 /* encode the BITMAP4 */
869 attrmask_ptr = ptr;
870 IXDR_PUT_HYPER(ptr, ae);
871 attr_offset_ptr = ptr;
872 /* encode the default LENGTH of the attributes for entry */
873 IXDR_PUT_U_INT32(ptr, 0);
874
875 if (ptr > ptr_redzone) {
876 no_space = TRUE;
877 continue;
878 }
879
880 /* Check if any of the first 32 attributes are being encoded */
881 if (ae & 0xffffffff00000000) {
882 /*
883 * Redzone check is done at the end of this section.
884 * This particular section will encode a maximum of
885 * 18 * BYTES_PER_XDR_UNIT of data
886 */
887 if (ae &
888 (FATTR4_SUPPORTED_ATTRS_MASK |
889 FATTR4_TYPE_MASK |
890 FATTR4_FH_EXPIRE_TYPE_MASK |
891 FATTR4_CHANGE_MASK |
892 FATTR4_SIZE_MASK |
893 FATTR4_LINK_SUPPORT_MASK |
894 FATTR4_SYMLINK_SUPPORT_MASK |
895 FATTR4_NAMED_ATTR_MASK |
896 FATTR4_FSID_MASK |
897 FATTR4_UNIQUE_HANDLES_MASK |
898 FATTR4_LEASE_TIME_MASK |
899 FATTR4_RDATTR_ERROR_MASK)) {
900
901 if (ae & FATTR4_SUPPORTED_ATTRS_MASK) {
902 IXDR_PUT_INT32(ptr, 2);
903 IXDR_PUT_HYPER(ptr,
904 rfs4_supported_attrs);
905 }
906 if (ae & FATTR4_TYPE_MASK) {
907 uint_t ftype = vt_to_nf4[va.va_type];
908 if (dvp->v_flag & V_XATTRDIR) {
909 if (va.va_type == VDIR)
910 ftype = NF4ATTRDIR;
911 else
912 ftype = NF4NAMEDATTR;
913 }
914 IXDR_PUT_U_INT32(ptr, ftype);
915 }
916 if (ae & FATTR4_FH_EXPIRE_TYPE_MASK) {
917 uint_t expire_type = FH4_PERSISTENT;
918 IXDR_PUT_U_INT32(ptr, expire_type);
919 }
920 if (ae & FATTR4_CHANGE_MASK) {
921 u_longlong_t change;
922 NFS4_SET_FATTR4_CHANGE(change,
923 va.va_ctime);
924 if (visp != NULL) {
925 u_longlong_t visch;
926 NFS4_SET_FATTR4_CHANGE(visch,
927 visp->vis_change);
928 if (visch > change)
929 change = visch;
930 }
931 IXDR_PUT_HYPER(ptr, change);
932 }
933 if (ae & FATTR4_SIZE_MASK) {
934 u_longlong_t size = va.va_size;
935 IXDR_PUT_HYPER(ptr, size);
936 }
937 if (ae & FATTR4_LINK_SUPPORT_MASK) {
938 IXDR_PUT_U_INT32(ptr, true);
939 }
940 if (ae & FATTR4_SYMLINK_SUPPORT_MASK) {
941 IXDR_PUT_U_INT32(ptr, true);
942 }
943 if (ae & FATTR4_NAMED_ATTR_MASK) {
944 uint_t isit;
945 pc_val = FALSE;
946 int sattr_error;
947
948 if (!(vp->v_vfsp->vfs_flag &
949 VFS_XATTR)) {
950 isit = FALSE;
951 } else {
952 sattr_error = VOP_PATHCONF(vp,
953 _PC_SATTR_EXISTS,
954 &pc_val, cs->cr, NULL);
955 if (sattr_error || pc_val == 0)
956 (void) VOP_PATHCONF(vp,
957 _PC_XATTR_EXISTS,
958 &pc_val,
959 cs->cr, NULL);
960 }
961 isit = (pc_val ? TRUE : FALSE);
962 IXDR_PUT_U_INT32(ptr, isit);
963 }
964 if (ae & FATTR4_FSID_MASK) {
965 u_longlong_t major, minor;
966 struct exportinfo *exi;
967
968 exi = newexi ? newexi : cs->exi;
969 if (exi->exi_volatile_dev) {
970 int *pmaj = (int *)&major;
971
972 pmaj[0] = exi->exi_fsid.val[0];
973 pmaj[1] = exi->exi_fsid.val[1];
974 minor = 0;
975 } else {
976 major = getmajor(va.va_fsid);
977 minor = getminor(va.va_fsid);
978 }
979 IXDR_PUT_HYPER(ptr, major);
980 IXDR_PUT_HYPER(ptr, minor);
981 }
982 if (ae & FATTR4_UNIQUE_HANDLES_MASK) {
983 IXDR_PUT_U_INT32(ptr, false);
984 }
985 if (ae & FATTR4_LEASE_TIME_MASK) {
986 uint_t lt = rfs4_lease_time;
987 IXDR_PUT_U_INT32(ptr, lt);
988 }
989 if (ae & FATTR4_RDATTR_ERROR_MASK) {
990 rddirattr_error =
991 (rddirattr_error == 0 ?
992 0 : puterrno4(rddirattr_error));
993 IXDR_PUT_U_INT32(ptr, rddirattr_error);
994 }
995
996 /* Check the redzone boundary */
997 if (ptr > ptr_redzone) {
998 if (nents || IS_MIN_ATTR_MASK(ar)) {
999 no_space = TRUE;
1000 continue;
1001 }
1002 MINIMIZE_ATTR_MASK(ar);
1003 ae = ar;
1004 ptr = lastentry_ptr;
1005 goto reencode_attrs;
1006 }
1007 }
1008 /*
1009 * Redzone check is done at the end of this section.
1010 * This particular section will encode a maximum of
1011 * 4 * BYTES_PER_XDR_UNIT of data.
1012 * NOTE: that if ACLs are supported that the
1013 * redzone calculations will need to change.
1014 */
1015 if (ae &
1016 (FATTR4_ACL_MASK |
1017 FATTR4_ACLSUPPORT_MASK |
1018 FATTR4_ARCHIVE_MASK |
1019 FATTR4_CANSETTIME_MASK |
1020 FATTR4_CASE_INSENSITIVE_MASK |
1021 FATTR4_CASE_PRESERVING_MASK |
1022 FATTR4_CHOWN_RESTRICTED_MASK)) {
1023
1024 if (ae & FATTR4_ACL_MASK) {
1025 ASSERT(0);
1026 }
1027 if (ae & FATTR4_ACLSUPPORT_MASK) {
1028 ASSERT(0);
1029 }
1030 if (ae & FATTR4_ARCHIVE_MASK) {
1031 ASSERT(0);
1032 }
1033 if (ae & FATTR4_CANSETTIME_MASK) {
1034 IXDR_PUT_U_INT32(ptr, true);
1035 }
1036 if (ae & FATTR4_CASE_INSENSITIVE_MASK) {
1037 IXDR_PUT_U_INT32(ptr, false);
1038 }
1039 if (ae & FATTR4_CASE_PRESERVING_MASK) {
1040 IXDR_PUT_U_INT32(ptr, true);
1041 }
1042 if (ae & FATTR4_CHOWN_RESTRICTED_MASK) {
1043 uint_t isit;
1044 pc_val = FALSE;
1045 (void) VOP_PATHCONF(vp,
1046 _PC_CHOWN_RESTRICTED,
1047 &pc_val, cs->cr, NULL);
1048 isit = (pc_val ? TRUE : FALSE);
1049 IXDR_PUT_U_INT32(ptr, isit);
1050 }
1051 /* Check the redzone boundary */
1052 if (ptr > ptr_redzone) {
1053 if (nents || IS_MIN_ATTR_MASK(ar)) {
1054 no_space = TRUE;
1055 continue;
1056 }
1057 MINIMIZE_ATTR_MASK(ar);
1058 ae = ar;
1059 ptr = lastentry_ptr;
1060 goto reencode_attrs;
1061 }
1062 }
1063 /*
1064 * Redzone check is done before the filehandle
1065 * is encoded.
1066 */
1067 if (ae &
1068 (FATTR4_FILEHANDLE_MASK |
1069 FATTR4_FILEID_MASK)) {
1070
1071 if (ae & FATTR4_FILEHANDLE_MASK) {
1072 struct {
1073 uint_t len;
1074 char *val;
1075 char fh[NFS_FH4_LEN];
1076 } fh;
1077 fh.len = 0;
1078 fh.val = fh.fh;
1079 (void) makefh4((nfs_fh4 *)&fh, vp,
1080 (newexi ? newexi : cs->exi));
1081
1082 if (dvp->v_flag & V_XATTRDIR)
1083 set_fh4_flag((nfs_fh4 *)&fh,
1084 FH4_NAMEDATTR);
1085
1086 if (!xdr_inline_encode_nfs_fh4(
1087 &ptr, ptr_redzone,
1088 (nfs_fh4_fmt_t *)fh.val)) {
1089 if (nents ||
1090 IS_MIN_ATTR_MASK(ar)) {
1091 no_space = TRUE;
1092 continue;
1093 }
1094 MINIMIZE_ATTR_MASK(ar);
1095 ae = ar;
1096 ptr = lastentry_ptr;
1097 goto reencode_attrs;
1098 }
1099 }
1100 if (ae & FATTR4_FILEID_MASK) {
1101 IXDR_PUT_HYPER(ptr, va.va_nodeid);
1102 }
1103 /* Check the redzone boundary */
1104 if (ptr > ptr_redzone) {
1105 if (nents || IS_MIN_ATTR_MASK(ar)) {
1106 no_space = TRUE;
1107 continue;
1108 }
1109 MINIMIZE_ATTR_MASK(ar);
1110 ae = ar;
1111 ptr = lastentry_ptr;
1112 goto reencode_attrs;
1113 }
1114 }
1115 /*
1116 * Redzone check is done at the end of this section.
1117 * This particular section will encode a maximum of
1118 * 15 * BYTES_PER_XDR_UNIT of data.
1119 */
1120 if (ae &
1121 (FATTR4_FILES_AVAIL_MASK |
1122 FATTR4_FILES_FREE_MASK |
1123 FATTR4_FILES_TOTAL_MASK |
1124 FATTR4_FS_LOCATIONS_MASK |
1125 FATTR4_HIDDEN_MASK |
1126 FATTR4_HOMOGENEOUS_MASK |
1127 FATTR4_MAXFILESIZE_MASK |
1128 FATTR4_MAXLINK_MASK |
1129 FATTR4_MAXNAME_MASK |
1130 FATTR4_MAXREAD_MASK |
1131 FATTR4_MAXWRITE_MASK)) {
1132
1133 if (ae & FATTR4_FILES_AVAIL_MASK) {
1134 IXDR_PUT_HYPER(ptr, sbe.fa);
1135 }
1136 if (ae & FATTR4_FILES_FREE_MASK) {
1137 IXDR_PUT_HYPER(ptr, sbe.ff);
1138 }
1139 if (ae & FATTR4_FILES_TOTAL_MASK) {
1140 IXDR_PUT_HYPER(ptr, sbe.ft);
1141 }
1142 if (ae & FATTR4_FS_LOCATIONS_MASK) {
1143 ASSERT(0);
1144 }
1145 if (ae & FATTR4_HIDDEN_MASK) {
1146 ASSERT(0);
1147 }
1148 if (ae & FATTR4_HOMOGENEOUS_MASK) {
1149 IXDR_PUT_U_INT32(ptr, true);
1150 }
1151 if (ae & FATTR4_MAXFILESIZE_MASK) {
1152 IXDR_PUT_HYPER(ptr, pce.maxfilesize);
1153 }
1154 if (ae & FATTR4_MAXLINK_MASK) {
1155 IXDR_PUT_U_INT32(ptr, pce.maxlink);
1156 }
1157 if (ae & FATTR4_MAXNAME_MASK) {
1158 IXDR_PUT_U_INT32(ptr, pce.maxname);
1159 }
1160 if (ae & FATTR4_MAXREAD_MASK) {
1161 IXDR_PUT_HYPER(ptr, maxread);
1162 }
1163 if (ae & FATTR4_MAXWRITE_MASK) {
1164 IXDR_PUT_HYPER(ptr, maxwrite);
1165 }
1166 /* Check the redzone boundary */
1167 if (ptr > ptr_redzone) {
1168 if (nents || IS_MIN_ATTR_MASK(ar)) {
1169 no_space = TRUE;
1170 continue;
1171 }
1172 MINIMIZE_ATTR_MASK(ar);
1173 ae = ar;
1174 ptr = lastentry_ptr;
1175 goto reencode_attrs;
1176 }
1177 }
1178 }
1179 if (ae & 0x00000000ffffffff) {
1180 /*
1181 * Redzone check is done at the end of this section.
1182 * This particular section will encode a maximum of
1183 * 3 * BYTES_PER_XDR_UNIT of data.
1184 */
1185 if (ae &
1186 (FATTR4_MIMETYPE_MASK |
1187 FATTR4_MODE_MASK |
1188 FATTR4_NO_TRUNC_MASK |
1189 FATTR4_NUMLINKS_MASK)) {
1190
1191 if (ae & FATTR4_MIMETYPE_MASK) {
1192 ASSERT(0);
1193 }
1194 if (ae & FATTR4_MODE_MASK) {
1195 uint_t m = va.va_mode;
1196 IXDR_PUT_U_INT32(ptr, m);
1197 }
1198 if (ae & FATTR4_NO_TRUNC_MASK) {
1199 IXDR_PUT_U_INT32(ptr, true);
1200 }
1201 if (ae & FATTR4_NUMLINKS_MASK) {
1202 IXDR_PUT_U_INT32(ptr, va.va_nlink);
1203 }
1204 /* Check the redzone boundary */
1205 if (ptr > ptr_redzone) {
1206 if (nents || IS_MIN_ATTR_MASK(ar)) {
1207 no_space = TRUE;
1208 continue;
1209 }
1210 MINIMIZE_ATTR_MASK(ar);
1211 ae = ar;
1212 ptr = lastentry_ptr;
1213 goto reencode_attrs;
1214 }
1215 }
1216 /*
1217 * Redzone check is done before the encoding of the
1218 * owner string since the length is indeterminate.
1219 */
1220 if (ae & FATTR4_OWNER_MASK) {
1221 if (!lu_set) {
1222 owner_error = nfs_idmap_uid_str(
1223 va.va_uid, &owner, TRUE);
1224 if (!owner_error) {
1225 lu_set = TRUE;
1226 lastuid = va.va_uid;
1227 }
1228 } else if (va.va_uid != lastuid) {
1229 if (owner.utf8string_len != 0) {
1230 kmem_free(owner.utf8string_val,
1231 owner.utf8string_len);
1232 owner.utf8string_len = 0;
1233 owner.utf8string_val = NULL;
1234 }
1235 owner_error = nfs_idmap_uid_str(
1236 va.va_uid, &owner, TRUE);
1237 if (!owner_error) {
1238 lastuid = va.va_uid;
1239 } else {
1240 lu_set = FALSE;
1241 }
1242 }
1243 if (!owner_error) {
1244 if ((ptr +
1245 (owner.utf8string_len /
1246 BYTES_PER_XDR_UNIT)
1247 + 2) > ptr_redzone) {
1248 if (nents ||
1249 IS_MIN_ATTR_MASK(ar)) {
1250 no_space = TRUE;
1251 continue;
1252 }
1253 MINIMIZE_ATTR_MASK(ar);
1254 ae = ar;
1255 ptr = lastentry_ptr;
1256 goto reencode_attrs;
1257 }
1258 /* encode the LENGTH of owner string */
1259 IXDR_PUT_U_INT32(ptr,
1260 owner.utf8string_len);
1261 /* encode the RNDUP FILL first */
1262 rndup = RNDUP(owner.utf8string_len) /
1263 BYTES_PER_XDR_UNIT;
1264 ptr[rndup - 1] = 0;
1265 /* encode the OWNER */
1266 bcopy(owner.utf8string_val, ptr,
1267 owner.utf8string_len);
1268 ptr += rndup;
1269 }
1270 }
1271 /*
1272 * Redzone check is done before the encoding of the
1273 * group string since the length is indeterminate.
1274 */
1275 if (ae & FATTR4_OWNER_GROUP_MASK) {
1276 if (!lg_set) {
1277 group_error =
1278 nfs_idmap_gid_str(va.va_gid,
1279 &group, TRUE);
1280 if (!group_error) {
1281 lg_set = TRUE;
1282 lastgid = va.va_gid;
1283 }
1284 } else if (va.va_gid != lastgid) {
1285 if (group.utf8string_len != 0) {
1286 kmem_free(
1287 group.utf8string_val,
1288 group.utf8string_len);
1289 group.utf8string_len = 0;
1290 group.utf8string_val = NULL;
1291 }
1292 group_error =
1293 nfs_idmap_gid_str(va.va_gid,
1294 &group, TRUE);
1295 if (!group_error)
1296 lastgid = va.va_gid;
1297 else
1298 lg_set = FALSE;
1299 }
1300 if (!group_error) {
1301 if ((ptr +
1302 (group.utf8string_len /
1303 BYTES_PER_XDR_UNIT)
1304 + 2) > ptr_redzone) {
1305 if (nents ||
1306 IS_MIN_ATTR_MASK(ar)) {
1307 no_space = TRUE;
1308 continue;
1309 }
1310 MINIMIZE_ATTR_MASK(ar);
1311 ae = ar;
1312 ptr = lastentry_ptr;
1313 goto reencode_attrs;
1314 }
1315 /* encode the LENGTH of owner string */
1316 IXDR_PUT_U_INT32(ptr,
1317 group.utf8string_len);
1318 /* encode the RNDUP FILL first */
1319 rndup = RNDUP(group.utf8string_len) /
1320 BYTES_PER_XDR_UNIT;
1321 ptr[rndup - 1] = 0;
1322 /* encode the OWNER */
1323 bcopy(group.utf8string_val, ptr,
1324 group.utf8string_len);
1325 ptr += rndup;
1326 }
1327 }
1328 if (ae &
1329 (FATTR4_QUOTA_AVAIL_HARD_MASK |
1330 FATTR4_QUOTA_AVAIL_SOFT_MASK |
1331 FATTR4_QUOTA_USED_MASK)) {
1332 if (ae & FATTR4_QUOTA_AVAIL_HARD_MASK) {
1333 ASSERT(0);
1334 }
1335 if (ae & FATTR4_QUOTA_AVAIL_SOFT_MASK) {
1336 ASSERT(0);
1337 }
1338 if (ae & FATTR4_QUOTA_USED_MASK) {
1339 ASSERT(0);
1340 }
1341 }
1342 /*
1343 * Redzone check is done at the end of this section.
1344 * This particular section will encode a maximum of
1345 * 10 * BYTES_PER_XDR_UNIT of data.
1346 */
1347 if (ae &
1348 (FATTR4_RAWDEV_MASK |
1349 FATTR4_SPACE_AVAIL_MASK |
1350 FATTR4_SPACE_FREE_MASK |
1351 FATTR4_SPACE_TOTAL_MASK |
1352 FATTR4_SPACE_USED_MASK |
1353 FATTR4_SYSTEM_MASK)) {
1354
1355 if (ae & FATTR4_RAWDEV_MASK) {
1356 fattr4_rawdev rd;
1357 rd.specdata1 =
1358 (uint32)getmajor(va.va_rdev);
1359 rd.specdata2 =
1360 (uint32)getminor(va.va_rdev);
1361 IXDR_PUT_U_INT32(ptr, rd.specdata1);
1362 IXDR_PUT_U_INT32(ptr, rd.specdata2);
1363 }
1364 if (ae & FATTR4_SPACE_AVAIL_MASK) {
1365 IXDR_PUT_HYPER(ptr, sbe.space_avail);
1366 }
1367 if (ae & FATTR4_SPACE_FREE_MASK) {
1368 IXDR_PUT_HYPER(ptr, sbe.space_free);
1369 }
1370 if (ae & FATTR4_SPACE_TOTAL_MASK) {
1371 IXDR_PUT_HYPER(ptr, sbe.space_total);
1372 }
1373 if (ae & FATTR4_SPACE_USED_MASK) {
1374 u_longlong_t su;
1375 su = (fattr4_space_used) DEV_BSIZE *
1376 (fattr4_space_used) va.va_nblocks;
1377 IXDR_PUT_HYPER(ptr, su);
1378 }
1379 if (ae & FATTR4_SYSTEM_MASK) {
1380 ASSERT(0);
1381 }
1382 /* Check the redzone boundary */
1383 if (ptr > ptr_redzone) {
1384 if (nents || IS_MIN_ATTR_MASK(ar)) {
1385 no_space = TRUE;
1386 continue;
1387 }
1388 MINIMIZE_ATTR_MASK(ar);
1389 ae = ar;
1390 ptr = lastentry_ptr;
1391 goto reencode_attrs;
1392 }
1393 }
1394 /*
1395 * Redzone check is done at the end of this section.
1396 * This particular section will encode a maximum of
1397 * 14 * BYTES_PER_XDR_UNIT of data.
1398 */
1399 if (ae &
1400 (FATTR4_TIME_ACCESS_MASK |
1401 FATTR4_TIME_ACCESS_SET_MASK |
1402 FATTR4_TIME_BACKUP_MASK |
1403 FATTR4_TIME_CREATE_MASK |
1404 FATTR4_TIME_DELTA_MASK |
1405 FATTR4_TIME_METADATA_MASK |
1406 FATTR4_TIME_MODIFY_MASK |
1407 FATTR4_TIME_MODIFY_SET_MASK |
1408 FATTR4_MOUNTED_ON_FILEID_MASK)) {
1409
1410 if (ae & FATTR4_TIME_ACCESS_MASK) {
1411 nfstime4 atime;
1412 (void) nfs4_time_vton(&va.va_atime,
1413 &atime);
1414 IXDR_PUT_HYPER(ptr, atime.seconds);
1415 IXDR_PUT_INT32(ptr, atime.nseconds);
1416 }
1417 if (ae & FATTR4_TIME_ACCESS_SET_MASK) {
1418 ASSERT(0);
1419 }
1420 if (ae & FATTR4_TIME_BACKUP_MASK) {
1421 ASSERT(0);
1422 }
1423 if (ae & FATTR4_TIME_CREATE_MASK) {
1424 ASSERT(0);
1425 }
1426 if (ae & FATTR4_TIME_DELTA_MASK) {
1427 u_longlong_t sec = 0;
1428 uint_t nsec = 1000;
1429 IXDR_PUT_HYPER(ptr, sec);
1430 IXDR_PUT_INT32(ptr, nsec);
1431 }
1432 if (ae & FATTR4_TIME_METADATA_MASK) {
1433 nfstime4 ctime;
1434 (void) nfs4_time_vton(&va.va_ctime,
1435 &ctime);
1436 IXDR_PUT_HYPER(ptr, ctime.seconds);
1437 IXDR_PUT_INT32(ptr, ctime.nseconds);
1438 }
1439 if (ae & FATTR4_TIME_MODIFY_MASK) {
1440 nfstime4 mtime;
1441 (void) nfs4_time_vton(&va.va_mtime,
1442 &mtime);
1443 IXDR_PUT_HYPER(ptr, mtime.seconds);
1444 IXDR_PUT_INT32(ptr, mtime.nseconds);
1445 }
1446 if (ae & FATTR4_TIME_MODIFY_SET_MASK) {
1447 ASSERT(0);
1448 }
1449 if (ae & FATTR4_MOUNTED_ON_FILEID_MASK) {
1450 IXDR_PUT_HYPER(ptr, dp->d_ino);
1451 }
1452 /* Check the redzone boundary */
1453 if (ptr > ptr_redzone) {
1454 if (nents || IS_MIN_ATTR_MASK(ar)) {
1455 no_space = TRUE;
1456 continue;
1457 }
1458 MINIMIZE_ATTR_MASK(ar);
1459 ae = ar;
1460 ptr = lastentry_ptr;
1461 goto reencode_attrs;
1462 }
1463 }
1464 }
1465
1466 /* Reset to directory's vfs info when encoding complete */
1467 if (vfs_different) {
1468 dsbe = sbe;
1469 dpce = pce;
1470 vfs_different = 0;
1471 }
1472
1473 /* "go back" and encode the attributes' length */
1474 attr_length =
1475 (char *)ptr -
1476 (char *)attr_offset_ptr -
1477 BYTES_PER_XDR_UNIT;
1478 IXDR_PUT_U_INT32(attr_offset_ptr, attr_length);
1479
1480 /*
1481 * If there was trouble obtaining a mapping for either
1482 * the owner or group attributes, then remove them from
1483 * bitmap4 for this entry and reset the bitmap value
1484 * in the data stream.
1485 */
1486 if (owner_error || group_error) {
1487 if (owner_error)
1488 ae &= ~FATTR4_OWNER_MASK;
1489 if (group_error)
1490 ae &= ~FATTR4_OWNER_GROUP_MASK;
1491 IXDR_PUT_HYPER(attrmask_ptr, ae);
1492 }
1493
1494 /* END OF ATTRIBUTE ENCODING */
1495
1496 lastentry_ptr = ptr;
1497 nents++;
1498 rddir_next_offset = dp->d_off;
1499 }
1500
1501 if (newexi != NULL) {
1502 exi_rele(newexi);
1503 newexi = NULL;
1504 }
1505
1506 /*
1507 * Check for the case that another VOP_READDIR() has to be done.
1508 * - no space encoding error
1509 * - no entry successfully encoded
1510 * - still more directory to read
1511 */
1512 if (!no_space && nents == 0 && !iseofdir)
1513 goto readagain;
1514
1515 *cs->statusp = resp->status = NFS4_OK;
1516
1517 /*
1518 * If no_space is set then we terminated prematurely,
1519 * rewind to the last entry and this can never be EOF.
1520 */
1521 if (no_space) {
1522 ptr = lastentry_ptr;
1523 eof = FALSE; /* ended encoded prematurely */
1524 } else {
1525 eof = (iseofdir ? TRUE : FALSE);
1526 }
1527
1528 /*
1529 * If we have entries, always return them, otherwise only error
1530 * if we ran out of space.
1531 */
1532 if (nents || !no_space) {
1533 ASSERT(ptr != NULL);
1534 /* encode the BOOLEAN marking no further entries */
1535 IXDR_PUT_U_INT32(ptr, false);
1536 /* encode the BOOLEAN signifying end of directory */
1537 IXDR_PUT_U_INT32(ptr, eof);
1538
1539 resp->data_len = (char *)ptr - (char *)beginning_ptr;
1540 resp->mblk->b_wptr += resp->data_len;
1541 } else {
1542 freeb(mp);
1543 resp->mblk = NULL;
1544 resp->data_len = 0;
1545 *cs->statusp = resp->status = NFS4ERR_TOOSMALL;
1546 }
1547
1548 kmem_free((caddr_t)rddir_data, rddir_data_len);
1549 if (vp)
1550 VN_RELE(vp);
1551 if (owner.utf8string_len != 0)
1552 kmem_free(owner.utf8string_val, owner.utf8string_len);
1553 if (group.utf8string_len != 0)
1554 kmem_free(group.utf8string_val, group.utf8string_len);
1555
1556 out:
1557 DTRACE_NFSV4_2(op__readdir__done, struct compound_state *, cs,
1558 READDIR4res *, resp);
1559 }
1560