Remove the thread argument from all mount->vfs_* function vectors,
[dragonfly.git] / sys / vfs / nfs / nfs_serv.c
CommitLineData
984263bc
MD
1/*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)nfs_serv.c 8.8 (Berkeley) 7/31/95
37 * $FreeBSD: src/sys/nfs/nfs_serv.c,v 1.93.2.6 2002/12/29 18:19:53 dillon Exp $
acde96db 38 * $DragonFly: src/sys/vfs/nfs/nfs_serv.c,v 1.36 2006/05/06 18:48:53 dillon Exp $
984263bc
MD
39 */
40
41/*
42 * nfs version 2 and 3 server calls to vnode ops
43 * - these routines generally have 3 phases
44 * 1 - break down and validate rpc request in mbuf list
45 * 2 - do the vnode ops for the request
46 * (surprisingly ?? many are very similar to syscalls in vfs_syscalls.c)
47 * 3 - build the rpc reply in an mbuf list
48 * nb:
49 * - do not mix the phases, since the nfsm_?? macros can return failures
50 * on a bad rpc or similar and do not do any vrele() or vput()'s
51 *
52 * - the nfsm_reply() macro generates an nfs rpc reply with the nfs
53 * error number iff error != 0 whereas
54 * returning an error from the server function implies a fatal error
55 * such as a badly constructed rpc request that should be dropped without
56 * a reply.
57 * For Version 3, nfsm_reply() does not return for the error case, since
58 * most version 3 rpcs return more than the status for error cases.
59 *
60 * Other notes:
61 * Warning: always pay careful attention to resource cleanup on return
62 * and note that nfsm_*() macros can terminate a procedure on certain
63 * errors.
984263bc
MD
64 */
65
66#include <sys/param.h>
67#include <sys/systm.h>
68#include <sys/proc.h>
fad57d0e 69#include <sys/nlookup.h>
984263bc
MD
70#include <sys/namei.h>
71#include <sys/unistd.h>
72#include <sys/vnode.h>
73#include <sys/mount.h>
74#include <sys/socket.h>
75#include <sys/socketvar.h>
76#include <sys/malloc.h>
77#include <sys/mbuf.h>
78#include <sys/dirent.h>
79#include <sys/stat.h>
80#include <sys/kernel.h>
81#include <sys/sysctl.h>
82#include <sys/buf.h>
83
84#include <vm/vm.h>
85#include <vm/vm_extern.h>
86#include <vm/vm_zone.h>
87#include <vm/vm_object.h>
88
3020e3be
MD
89#include <sys/buf2.h>
90
165dba55
DR
91#include <sys/thread2.h>
92
1f2de5d4
MD
93#include "nfsproto.h"
94#include "rpcv2.h"
95#include "nfs.h"
96#include "xdr_subs.h"
97#include "nfsm_subs.h"
984263bc
MD
98
99#ifdef NFSRV_DEBUG
100#define nfsdbprintf(info) printf info
101#else
102#define nfsdbprintf(info)
103#endif
104
105#define MAX_COMMIT_COUNT (1024 * 1024)
106
053a4ed4 107#define NUM_HEURISTIC 1017
984263bc
MD
108#define NHUSE_INIT 64
109#define NHUSE_INC 16
110#define NHUSE_MAX 2048
111
112static struct nfsheur {
113 struct vnode *nh_vp; /* vp to match (unreferenced pointer) */
114 off_t nh_nextr; /* next offset for sequential detection */
115 int nh_use; /* use count for selection */
116 int nh_seqcount; /* heuristic */
117} nfsheur[NUM_HEURISTIC];
118
119nfstype nfsv3_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK,
120 NFFIFO, NFNON };
121#ifndef NFS_NOSERVER
122nfstype nfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON,
123 NFCHR, NFNON };
124/* Global vars */
125extern u_int32_t nfs_xdrneg1;
126extern u_int32_t nfs_false, nfs_true;
127extern enum vtype nv3tov_type[8];
128extern struct nfsstats nfsstats;
129
130int nfsrvw_procrastinate = NFS_GATHERDELAY * 1000;
131int nfsrvw_procrastinate_v3 = 0;
132
3a6f9faf 133static struct timespec nfsver;
984263bc
MD
134
135SYSCTL_DECL(_vfs_nfs);
136
137static int nfs_async;
138SYSCTL_INT(_vfs_nfs, OID_AUTO, async, CTLFLAG_RW, &nfs_async, 0, "");
139static int nfs_commit_blks;
140static int nfs_commit_miss;
141SYSCTL_INT(_vfs_nfs, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 0, "");
142SYSCTL_INT(_vfs_nfs, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 0, "");
143
a6ee311a
RG
144static int nfsrv_access (struct vnode *,int,struct ucred *,int,
145 struct thread *, int);
146static void nfsrvw_coalesce (struct nfsrv_descript *,
147 struct nfsrv_descript *);
984263bc 148
984263bc
MD
149/*
150 * nfs v3 access service
151 */
152int
dadab5e9 153nfsrv3_access(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
e851b29e 154 struct thread *td, struct mbuf **mrq)
984263bc
MD
155{
156 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
157 struct sockaddr *nam = nfsd->nd_nam;
158 caddr_t dpos = nfsd->nd_dpos;
159 struct ucred *cred = &nfsd->nd_cr;
160 struct vnode *vp = NULL;
161 nfsfh_t nfh;
162 fhandle_t *fhp;
dadab5e9
MD
163 u_int32_t *tl;
164 int32_t t1;
984263bc 165 caddr_t bpos;
e07fef60 166 int error = 0, rdonly, getret;
984263bc
MD
167 char *cp2;
168 struct mbuf *mb, *mreq, *mb2;
169 struct vattr vattr, *vap = &vattr;
170 u_long testmode, nfsmode;
984263bc
MD
171
172 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
984263bc
MD
173 fhp = &nfh.fh_generic;
174 nfsm_srvmtofh(fhp);
175 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
176 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly,
177 (nfsd->nd_flag & ND_KERBAUTH), TRUE);
178 if (error) {
179 nfsm_reply(NFSX_UNSIGNED);
180 nfsm_srvpostop_attr(1, (struct vattr *)0);
181 error = 0;
182 goto nfsmout;
183 }
184 nfsmode = fxdr_unsigned(u_int32_t, *tl);
185 if ((nfsmode & NFSV3ACCESS_READ) &&
dadab5e9 186 nfsrv_access(vp, VREAD, cred, rdonly, td, 0))
984263bc
MD
187 nfsmode &= ~NFSV3ACCESS_READ;
188 if (vp->v_type == VDIR)
189 testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND |
190 NFSV3ACCESS_DELETE);
191 else
192 testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND);
193 if ((nfsmode & testmode) &&
dadab5e9 194 nfsrv_access(vp, VWRITE, cred, rdonly, td, 0))
984263bc
MD
195 nfsmode &= ~testmode;
196 if (vp->v_type == VDIR)
197 testmode = NFSV3ACCESS_LOOKUP;
198 else
199 testmode = NFSV3ACCESS_EXECUTE;
200 if ((nfsmode & testmode) &&
dadab5e9 201 nfsrv_access(vp, VEXEC, cred, rdonly, td, 0))
984263bc 202 nfsmode &= ~testmode;
87de5057 203 getret = VOP_GETATTR(vp, vap);
984263bc
MD
204 vput(vp);
205 vp = NULL;
206 nfsm_reply(NFSX_POSTOPATTR(1) + NFSX_UNSIGNED);
207 nfsm_srvpostop_attr(getret, vap);
208 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
209 *tl = txdr_unsigned(nfsmode);
210nfsmout:
211 if (vp)
212 vput(vp);
213 return(error);
214}
215
216/*
217 * nfs getattr service
218 */
219int
e851b29e
CP
220nfsrv_getattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
221 struct thread *td, struct mbuf **mrq)
984263bc
MD
222{
223 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
224 struct sockaddr *nam = nfsd->nd_nam;
225 caddr_t dpos = nfsd->nd_dpos;
226 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 227 struct nfs_fattr *fp;
984263bc 228 struct vattr va;
dadab5e9 229 struct vattr *vap = &va;
984263bc
MD
230 struct vnode *vp = NULL;
231 nfsfh_t nfh;
232 fhandle_t *fhp;
dadab5e9
MD
233 u_int32_t *tl;
234 int32_t t1;
984263bc 235 caddr_t bpos;
e07fef60 236 int error = 0, rdonly;
984263bc
MD
237 char *cp2;
238 struct mbuf *mb, *mb2, *mreq;
984263bc
MD
239
240 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
241 fhp = &nfh.fh_generic;
242 nfsm_srvmtofh(fhp);
243 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
244 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
245 if (error) {
246 nfsm_reply(0);
247 error = 0;
248 goto nfsmout;
249 }
87de5057 250 error = VOP_GETATTR(vp, vap);
984263bc
MD
251 vput(vp);
252 vp = NULL;
253 nfsm_reply(NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
254 if (error) {
255 error = 0;
256 goto nfsmout;
257 }
258 nfsm_build(fp, struct nfs_fattr *, NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
259 nfsm_srvfillattr(vap, fp);
260 /* fall through */
261
262nfsmout:
263 if (vp)
264 vput(vp);
265 return(error);
266}
267
268/*
269 * nfs setattr service
270 */
271int
e851b29e
CP
272nfsrv_setattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
273 struct thread *td, struct mbuf **mrq)
984263bc
MD
274{
275 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
276 struct sockaddr *nam = nfsd->nd_nam;
277 caddr_t dpos = nfsd->nd_dpos;
278 struct ucred *cred = &nfsd->nd_cr;
279 struct vattr va, preat;
dadab5e9
MD
280 struct vattr *vap = &va;
281 struct nfsv2_sattr *sp;
282 struct nfs_fattr *fp;
984263bc
MD
283 struct vnode *vp = NULL;
284 nfsfh_t nfh;
285 fhandle_t *fhp;
dadab5e9
MD
286 u_int32_t *tl;
287 int32_t t1;
984263bc 288 caddr_t bpos;
e07fef60 289 int error = 0, rdonly, preat_ret = 1, postat_ret = 1;
984263bc
MD
290 int v3 = (nfsd->nd_flag & ND_NFSV3), gcheck = 0;
291 char *cp2;
292 struct mbuf *mb, *mb2, *mreq;
984263bc
MD
293 struct timespec guard;
294
295 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
296 fhp = &nfh.fh_generic;
297 nfsm_srvmtofh(fhp);
298 VATTR_NULL(vap);
299 if (v3) {
300 nfsm_srvsattr(vap);
301 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
302 gcheck = fxdr_unsigned(int, *tl);
303 if (gcheck) {
304 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
305 fxdr_nfsv3time(tl, &guard);
306 }
307 } else {
308 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
309 /*
310 * Nah nah nah nah na nah
311 * There is a bug in the Sun client that puts 0xffff in the mode
312 * field of sattr when it should put in 0xffffffff. The u_short
313 * doesn't sign extend.
314 * --> check the low order 2 bytes for 0xffff
315 */
316 if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff)
317 vap->va_mode = nfstov_mode(sp->sa_mode);
318 if (sp->sa_uid != nfs_xdrneg1)
319 vap->va_uid = fxdr_unsigned(uid_t, sp->sa_uid);
320 if (sp->sa_gid != nfs_xdrneg1)
321 vap->va_gid = fxdr_unsigned(gid_t, sp->sa_gid);
322 if (sp->sa_size != nfs_xdrneg1)
323 vap->va_size = fxdr_unsigned(u_quad_t, sp->sa_size);
324 if (sp->sa_atime.nfsv2_sec != nfs_xdrneg1) {
325#ifdef notyet
326 fxdr_nfsv2time(&sp->sa_atime, &vap->va_atime);
327#else
328 vap->va_atime.tv_sec =
329 fxdr_unsigned(int32_t, sp->sa_atime.nfsv2_sec);
330 vap->va_atime.tv_nsec = 0;
331#endif
332 }
333 if (sp->sa_mtime.nfsv2_sec != nfs_xdrneg1)
334 fxdr_nfsv2time(&sp->sa_mtime, &vap->va_mtime);
335
336 }
337
338 /*
339 * Now that we have all the fields, lets do it.
340 */
341 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly,
342 (nfsd->nd_flag & ND_KERBAUTH), TRUE);
343 if (error) {
344 nfsm_reply(2 * NFSX_UNSIGNED);
345 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
346 error = 0;
347 goto nfsmout;
348 }
349
350 /*
351 * vp now an active resource, pay careful attention to cleanup
352 */
353
984263bc 354 if (v3) {
87de5057 355 error = preat_ret = VOP_GETATTR(vp, &preat);
984263bc
MD
356 if (!error && gcheck &&
357 (preat.va_ctime.tv_sec != guard.tv_sec ||
358 preat.va_ctime.tv_nsec != guard.tv_nsec))
359 error = NFSERR_NOT_SYNC;
360 if (error) {
361 vput(vp);
362 vp = NULL;
363 nfsm_reply(NFSX_WCCDATA(v3));
364 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
365 error = 0;
366 goto nfsmout;
367 }
368 }
369
370 /*
371 * If the size is being changed write acces is required, otherwise
372 * just check for a read only file system.
373 */
374 if (vap->va_size == ((u_quad_t)((quad_t) -1))) {
375 if (rdonly || (vp->v_mount->mnt_flag & MNT_RDONLY)) {
376 error = EROFS;
377 goto out;
378 }
379 } else {
380 if (vp->v_type == VDIR) {
381 error = EISDIR;
382 goto out;
383 } else if ((error = nfsrv_access(vp, VWRITE, cred, rdonly,
dadab5e9 384 td, 0)) != 0){
984263bc 385 goto out;
dadab5e9 386 }
984263bc 387 }
87de5057
MD
388 error = VOP_SETATTR(vp, vap, cred);
389 postat_ret = VOP_GETATTR(vp, vap);
984263bc
MD
390 if (!error)
391 error = postat_ret;
392out:
393 vput(vp);
394 vp = NULL;
395 nfsm_reply(NFSX_WCCORFATTR(v3));
396 if (v3) {
397 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
398 error = 0;
399 goto nfsmout;
400 } else {
401 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
402 nfsm_srvfillattr(vap, fp);
403 }
404 /* fall through */
405
406nfsmout:
407 if (vp)
408 vput(vp);
409 return(error);
410}
411
412/*
413 * nfs lookup rpc
414 */
415int
e851b29e
CP
416nfsrv_lookup(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
417 struct thread *td, struct mbuf **mrq)
984263bc
MD
418{
419 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
420 struct sockaddr *nam = nfsd->nd_nam;
421 caddr_t dpos = nfsd->nd_dpos;
422 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 423 struct nfs_fattr *fp;
fad57d0e
MD
424 struct nlookupdata nd;
425 struct vnode *vp;
426 struct vnode *dirp;
427 struct namecache *ncp;
984263bc
MD
428 nfsfh_t nfh;
429 fhandle_t *fhp;
dadab5e9
MD
430 caddr_t cp;
431 u_int32_t *tl;
432 int32_t t1;
984263bc 433 caddr_t bpos;
e07fef60 434 int error = 0, len, dirattr_ret = 1;
984263bc
MD
435 int v3 = (nfsd->nd_flag & ND_NFSV3), pubflag;
436 char *cp2;
437 struct mbuf *mb, *mb2, *mreq;
438 struct vattr va, dirattr, *vap = &va;
984263bc
MD
439
440 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
441 nlookup_zero(&nd);
442 dirp = NULL;
443 vp = NULL;
984263bc
MD
444
445 fhp = &nfh.fh_generic;
446 nfsm_srvmtofh(fhp);
447 nfsm_srvnamesiz(len);
448
449 pubflag = nfs_ispublicfh(fhp);
450
fad57d0e
MD
451 error = nfs_namei(&nd, cred, NAMEI_LOOKUP, NULL, &vp,
452 fhp, len, slp, nam, &md, &dpos,
dadab5e9 453 &dirp, td, (nfsd->nd_flag & ND_KERBAUTH), pubflag);
984263bc
MD
454
455 /*
456 * namei failure, only dirp to cleanup. Clear out garbarge from
457 * structure in case macros jump to nfsmout.
458 */
459
460 if (error) {
461 if (dirp) {
462 if (v3)
87de5057 463 dirattr_ret = VOP_GETATTR(dirp, &dirattr);
984263bc
MD
464 vrele(dirp);
465 dirp = NULL;
466 }
467 nfsm_reply(NFSX_POSTOPATTR(v3));
468 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
469 error = 0;
470 goto nfsmout;
471 }
472
473 /*
474 * Locate index file for public filehandle
475 *
476 * error is 0 on entry and 0 on exit from this block.
477 */
478
479 if (pubflag) {
fad57d0e 480 if (vp->v_type == VDIR && nfs_pub.np_index != NULL) {
984263bc
MD
481 /*
482 * Setup call to lookup() to see if we can find
483 * the index file. Arguably, this doesn't belong
484 * in a kernel.. Ugh. If an error occurs, do not
485 * try to install an index file and then clear the
486 * error.
487 *
488 * When we replace nd with ind and redirect ndp,
489 * maintenance of ni_startdir and ni_vp shift to
490 * ind and we have to clean them up in the old nd.
491 * However, the cnd resource continues to be maintained
492 * via the original nd. Confused? You aren't alone!
493 */
ca466bae 494 VOP_UNLOCK(vp, 0);
fad57d0e
MD
495 ncp = cache_hold(nd.nl_ncp);
496 nlookup_done(&nd);
497 error = nlookup_init_raw(&nd, nfs_pub.np_index,
498 UIO_SYSSPACE, 0, cred, ncp);
499 cache_drop(ncp);
500 if (error == 0)
501 error = nlookup(&nd);
984263bc
MD
502
503 if (error == 0) {
504 /*
505 * Found an index file. Get rid of
fad57d0e
MD
506 * the old references. transfer vp and
507 * load up the new vp. Fortunately we do
508 * not have to deal with dvp, that would be
509 * a huge mess.
984263bc
MD
510 */
511 if (dirp)
512 vrele(dirp);
fad57d0e
MD
513 dirp = vp;
514 vp = NULL;
515 error = cache_vget(nd.nl_ncp, nd.nl_cred,
516 LK_EXCLUSIVE, &vp);
517 KKASSERT(error == 0);
984263bc
MD
518 }
519 error = 0;
520 }
521 /*
522 * If the public filehandle was used, check that this lookup
523 * didn't result in a filehandle outside the publicly exported
524 * filesystem. We clear the poor vp here to avoid lockups due
525 * to NFS I/O.
526 */
527
fad57d0e
MD
528 if (vp->v_mount != nfs_pub.np_mount) {
529 vput(vp);
530 vp = NULL;
984263bc
MD
531 error = EPERM;
532 }
533 }
534
535 if (dirp) {
536 if (v3)
87de5057 537 dirattr_ret = VOP_GETATTR(dirp, &dirattr);
984263bc
MD
538 vrele(dirp);
539 dirp = NULL;
540 }
541
542 /*
543 * Resources at this point:
544 * ndp->ni_vp may not be NULL
545 *
546 */
547
548 if (error) {
549 nfsm_reply(NFSX_POSTOPATTR(v3));
550 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
551 error = 0;
552 goto nfsmout;
553 }
554
984263bc
MD
555 /*
556 * Clear out some resources prior to potentially blocking. This
557 * is not as critical as ni_dvp resources in other routines, but
558 * it helps.
559 */
fad57d0e 560 nlookup_done(&nd);
984263bc
MD
561
562 /*
563 * Get underlying attribute, then release remaining resources ( for
564 * the same potential blocking reason ) and reply.
565 */
984263bc
MD
566 bzero((caddr_t)fhp, sizeof(nfh));
567 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
568 error = VFS_VPTOFH(vp, &fhp->fh_fid);
569 if (!error)
87de5057 570 error = VOP_GETATTR(vp, vap);
984263bc
MD
571
572 vput(vp);
fad57d0e 573 vp = NULL;
984263bc
MD
574 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPORFATTR(v3) + NFSX_POSTOPATTR(v3));
575 if (error) {
576 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
577 error = 0;
578 goto nfsmout;
579 }
580 nfsm_srvfhtom(fhp, v3);
581 if (v3) {
582 nfsm_srvpostop_attr(0, vap);
583 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
584 } else {
585 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
586 nfsm_srvfillattr(vap, fp);
587 }
588
589nfsmout:
590 if (dirp)
591 vrele(dirp);
fad57d0e
MD
592 nlookup_done(&nd); /* may be called twice */
593 if (vp)
594 vput(vp);
984263bc
MD
595 return (error);
596}
597
598/*
599 * nfs readlink service
600 */
601int
e851b29e
CP
602nfsrv_readlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
603 struct thread *td, struct mbuf **mrq)
984263bc
MD
604{
605 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
606 struct sockaddr *nam = nfsd->nd_nam;
607 caddr_t dpos = nfsd->nd_dpos;
608 struct ucred *cred = &nfsd->nd_cr;
609 struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN];
dadab5e9
MD
610 struct iovec *ivp = iv;
611 struct mbuf *mp;
612 u_int32_t *tl;
613 int32_t t1;
984263bc 614 caddr_t bpos;
e07fef60 615 int error = 0, rdonly, i, tlen, len, getret;
984263bc
MD
616 int v3 = (nfsd->nd_flag & ND_NFSV3);
617 char *cp2;
618 struct mbuf *mb, *mb2, *mp2, *mp3, *mreq;
619 struct vnode *vp = NULL;
620 struct vattr attr;
621 nfsfh_t nfh;
622 fhandle_t *fhp;
623 struct uio io, *uiop = &io;
984263bc
MD
624
625 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
626#ifndef nolint
627 mp2 = (struct mbuf *)0;
628#endif
629 mp3 = NULL;
630 fhp = &nfh.fh_generic;
631 nfsm_srvmtofh(fhp);
632 len = 0;
633 i = 0;
634 while (len < NFS_MAXPATHLEN) {
50503f0f
JH
635 mp = m_getcl(MB_WAIT, MT_DATA, 0);
636 mp->m_len = MCLBYTES;
984263bc
MD
637 if (len == 0)
638 mp3 = mp2 = mp;
639 else {
640 mp2->m_next = mp;
641 mp2 = mp;
642 }
643 if ((len+mp->m_len) > NFS_MAXPATHLEN) {
644 mp->m_len = NFS_MAXPATHLEN-len;
645 len = NFS_MAXPATHLEN;
646 } else
647 len += mp->m_len;
648 ivp->iov_base = mtod(mp, caddr_t);
649 ivp->iov_len = mp->m_len;
650 i++;
651 ivp++;
652 }
653 uiop->uio_iov = iv;
654 uiop->uio_iovcnt = i;
655 uiop->uio_offset = 0;
656 uiop->uio_resid = len;
657 uiop->uio_rw = UIO_READ;
658 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 659 uiop->uio_td = NULL;
984263bc
MD
660 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
661 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
662 if (error) {
663 nfsm_reply(2 * NFSX_UNSIGNED);
664 nfsm_srvpostop_attr(1, (struct vattr *)0);
665 error = 0;
666 goto nfsmout;
667 }
668 if (vp->v_type != VLNK) {
669 if (v3)
670 error = EINVAL;
671 else
672 error = ENXIO;
673 goto out;
674 }
984263bc
MD
675 error = VOP_READLINK(vp, uiop, cred);
676out:
87de5057 677 getret = VOP_GETATTR(vp, &attr);
984263bc
MD
678 vput(vp);
679 vp = NULL;
680 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_UNSIGNED);
681 if (v3) {
682 nfsm_srvpostop_attr(getret, &attr);
683 if (error) {
684 error = 0;
685 goto nfsmout;
686 }
687 }
688 if (uiop->uio_resid > 0) {
689 len -= uiop->uio_resid;
690 tlen = nfsm_rndup(len);
691 nfsm_adj(mp3, NFS_MAXPATHLEN-tlen, tlen-len);
692 }
693 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
694 *tl = txdr_unsigned(len);
695 mb->m_next = mp3;
696 mp3 = NULL;
697nfsmout:
698 if (mp3)
699 m_freem(mp3);
700 if (vp)
701 vput(vp);
702 return(error);
703}
704
705/*
706 * nfs read service
707 */
708int
e851b29e
CP
709nfsrv_read(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
710 struct thread *td, struct mbuf **mrq)
984263bc
MD
711{
712 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
713 struct sockaddr *nam = nfsd->nd_nam;
714 caddr_t dpos = nfsd->nd_dpos;
715 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 716 struct iovec *iv;
984263bc 717 struct iovec *iv2;
dadab5e9
MD
718 struct mbuf *m;
719 struct nfs_fattr *fp;
720 u_int32_t *tl;
721 int32_t t1;
722 int i;
984263bc 723 caddr_t bpos;
e07fef60 724 int error = 0, rdonly, cnt, len, left, siz, tlen, getret;
984263bc
MD
725 int v3 = (nfsd->nd_flag & ND_NFSV3), reqlen;
726 char *cp2;
727 struct mbuf *mb, *mb2, *mreq;
728 struct mbuf *m2;
729 struct vnode *vp = NULL;
730 nfsfh_t nfh;
731 fhandle_t *fhp;
732 struct uio io, *uiop = &io;
733 struct vattr va, *vap = &va;
734 struct nfsheur *nh;
735 off_t off;
736 int ioflag = 0;
984263bc
MD
737
738 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
739 fhp = &nfh.fh_generic;
740 nfsm_srvmtofh(fhp);
741 if (v3) {
742 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
743 off = fxdr_hyper(tl);
744 } else {
745 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
746 off = (off_t)fxdr_unsigned(u_int32_t, *tl);
747 }
748 nfsm_srvstrsiz(reqlen, NFS_SRVMAXDATA(nfsd));
749
750 /*
751 * Reference vp. If an error occurs, vp will be invalid, but we
752 * have to NULL it just in case. The macros might goto nfsmout
753 * as well.
754 */
755
756 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
757 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
758 if (error) {
759 vp = NULL;
760 nfsm_reply(2 * NFSX_UNSIGNED);
761 nfsm_srvpostop_attr(1, (struct vattr *)0);
762 error = 0;
763 goto nfsmout;
764 }
765
766 if (vp->v_type != VREG) {
767 if (v3)
768 error = EINVAL;
769 else
770 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
771 }
772 if (!error) {
dadab5e9
MD
773 if ((error = nfsrv_access(vp, VREAD, cred, rdonly, td, 1)) != 0)
774 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 1);
984263bc 775 }
87de5057 776 getret = VOP_GETATTR(vp, vap);
984263bc
MD
777 if (!error)
778 error = getret;
779 if (error) {
780 vput(vp);
781 vp = NULL;
782 nfsm_reply(NFSX_POSTOPATTR(v3));
783 nfsm_srvpostop_attr(getret, vap);
784 error = 0;
785 goto nfsmout;
786 }
787
788 /*
789 * Calculate byte count to read
790 */
791
792 if (off >= vap->va_size)
793 cnt = 0;
794 else if ((off + reqlen) > vap->va_size)
795 cnt = vap->va_size - off;
796 else
797 cnt = reqlen;
798
799 /*
800 * Calculate seqcount for heuristic
801 */
802
803 {
804 int hi;
053a4ed4 805 int try = 32;
984263bc
MD
806
807 /*
808 * Locate best candidate
809 */
810
053a4ed4 811 hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC;
984263bc
MD
812 nh = &nfsheur[hi];
813
814 while (try--) {
815 if (nfsheur[hi].nh_vp == vp) {
816 nh = &nfsheur[hi];
817 break;
818 }
819 if (nfsheur[hi].nh_use > 0)
820 --nfsheur[hi].nh_use;
053a4ed4 821 hi = (hi + 1) % NUM_HEURISTIC;
984263bc
MD
822 if (nfsheur[hi].nh_use < nh->nh_use)
823 nh = &nfsheur[hi];
824 }
825
826 if (nh->nh_vp != vp) {
827 nh->nh_vp = vp;
828 nh->nh_nextr = off;
829 nh->nh_use = NHUSE_INIT;
830 if (off == 0)
831 nh->nh_seqcount = 4;
832 else
833 nh->nh_seqcount = 1;
834 }
835
836 /*
837 * Calculate heuristic
838 */
839
840 if ((off == 0 && nh->nh_seqcount > 0) || off == nh->nh_nextr) {
841 if (++nh->nh_seqcount > IO_SEQMAX)
842 nh->nh_seqcount = IO_SEQMAX;
843 } else if (nh->nh_seqcount > 1) {
844 nh->nh_seqcount = 1;
845 } else {
846 nh->nh_seqcount = 0;
847 }
848 nh->nh_use += NHUSE_INC;
849 if (nh->nh_use > NHUSE_MAX)
850 nh->nh_use = NHUSE_MAX;
851 ioflag |= nh->nh_seqcount << IO_SEQSHIFT;
852 }
853
854 nfsm_reply(NFSX_POSTOPORFATTR(v3) + 3 * NFSX_UNSIGNED+nfsm_rndup(cnt));
855 if (v3) {
856 nfsm_build(tl, u_int32_t *, NFSX_V3FATTR + 4 * NFSX_UNSIGNED);
857 *tl++ = nfs_true;
858 fp = (struct nfs_fattr *)tl;
859 tl += (NFSX_V3FATTR / sizeof (u_int32_t));
860 } else {
861 nfsm_build(tl, u_int32_t *, NFSX_V2FATTR + NFSX_UNSIGNED);
862 fp = (struct nfs_fattr *)tl;
863 tl += (NFSX_V2FATTR / sizeof (u_int32_t));
864 }
865 len = left = nfsm_rndup(cnt);
866 if (cnt > 0) {
867 /*
868 * Generate the mbuf list with the uio_iov ref. to it.
869 */
870 i = 0;
871 m = m2 = mb;
872 while (left > 0) {
873 siz = min(M_TRAILINGSPACE(m), left);
874 if (siz > 0) {
875 left -= siz;
876 i++;
877 }
878 if (left > 0) {
50503f0f 879 m = m_getcl(MB_WAIT, MT_DATA, 0);
984263bc
MD
880 m->m_len = 0;
881 m2->m_next = m;
882 m2 = m;
883 }
884 }
885 MALLOC(iv, struct iovec *, i * sizeof (struct iovec),
886 M_TEMP, M_WAITOK);
887 uiop->uio_iov = iv2 = iv;
888 m = mb;
889 left = len;
890 i = 0;
891 while (left > 0) {
892 if (m == NULL)
893 panic("nfsrv_read iov");
894 siz = min(M_TRAILINGSPACE(m), left);
895 if (siz > 0) {
896 iv->iov_base = mtod(m, caddr_t) + m->m_len;
897 iv->iov_len = siz;
898 m->m_len += siz;
899 left -= siz;
900 iv++;
901 i++;
902 }
903 m = m->m_next;
904 }
905 uiop->uio_iovcnt = i;
906 uiop->uio_offset = off;
907 uiop->uio_resid = len;
908 uiop->uio_rw = UIO_READ;
909 uiop->uio_segflg = UIO_SYSSPACE;
910 error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred);
911 off = uiop->uio_offset;
912 nh->nh_nextr = off;
913 FREE((caddr_t)iv2, M_TEMP);
87de5057 914 if (error || (getret = VOP_GETATTR(vp, vap))) {
984263bc
MD
915 if (!error)
916 error = getret;
917 m_freem(mreq);
918 vput(vp);
919 vp = NULL;
920 nfsm_reply(NFSX_POSTOPATTR(v3));
921 nfsm_srvpostop_attr(getret, vap);
922 error = 0;
923 goto nfsmout;
924 }
925 } else {
926 uiop->uio_resid = 0;
927 }
928 vput(vp);
929 vp = NULL;
930 nfsm_srvfillattr(vap, fp);
931 tlen = len - uiop->uio_resid;
932 cnt = cnt < tlen ? cnt : tlen;
933 tlen = nfsm_rndup(cnt);
934 if (len != tlen || tlen != cnt)
935 nfsm_adj(mb, len - tlen, tlen - cnt);
936 if (v3) {
937 *tl++ = txdr_unsigned(cnt);
938 if (len < reqlen)
939 *tl++ = nfs_true;
940 else
941 *tl++ = nfs_false;
942 }
943 *tl = txdr_unsigned(cnt);
944nfsmout:
945 if (vp)
946 vput(vp);
947 return(error);
948}
949
950/*
951 * nfs write service
952 */
953int
e851b29e
CP
954nfsrv_write(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
955 struct thread *td, struct mbuf **mrq)
984263bc
MD
956{
957 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
958 struct sockaddr *nam = nfsd->nd_nam;
959 caddr_t dpos = nfsd->nd_dpos;
960 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
961 struct iovec *ivp;
962 int i, cnt;
963 struct mbuf *mp;
964 struct nfs_fattr *fp;
984263bc
MD
965 struct iovec *iv;
966 struct vattr va, forat;
dadab5e9
MD
967 struct vattr *vap = &va;
968 u_int32_t *tl;
969 int32_t t1;
984263bc 970 caddr_t bpos;
e07fef60 971 int error = 0, rdonly, len, forat_ret = 1;
984263bc
MD
972 int ioflags, aftat_ret = 1, retlen, zeroing, adjust;
973 int stable = NFSV3WRITE_FILESYNC;
974 int v3 = (nfsd->nd_flag & ND_NFSV3);
975 char *cp2;
976 struct mbuf *mb, *mb2, *mreq;
977 struct vnode *vp = NULL;
978 nfsfh_t nfh;
979 fhandle_t *fhp;
980 struct uio io, *uiop = &io;
981 off_t off;
984263bc
MD
982
983 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
984 if (mrep == NULL) {
985 *mrq = NULL;
986 error = 0;
987 goto nfsmout;
988 }
989 fhp = &nfh.fh_generic;
990 nfsm_srvmtofh(fhp);
991 if (v3) {
992 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
993 off = fxdr_hyper(tl);
994 tl += 3;
995 stable = fxdr_unsigned(int, *tl++);
996 } else {
997 nfsm_dissect(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
998 off = (off_t)fxdr_unsigned(u_int32_t, *++tl);
999 tl += 2;
1000 if (nfs_async)
1001 stable = NFSV3WRITE_UNSTABLE;
1002 }
1003 retlen = len = fxdr_unsigned(int32_t, *tl);
1004 cnt = i = 0;
1005
1006 /*
1007 * For NFS Version 2, it is not obvious what a write of zero length
1008 * should do, but I might as well be consistent with Version 3,
1009 * which is to return ok so long as there are no permission problems.
1010 */
1011 if (len > 0) {
1012 zeroing = 1;
1013 mp = mrep;
1014 while (mp) {
1015 if (mp == md) {
1016 zeroing = 0;
1017 adjust = dpos - mtod(mp, caddr_t);
1018 mp->m_len -= adjust;
1019 if (mp->m_len > 0 && adjust > 0)
1020 NFSMADV(mp, adjust);
1021 }
1022 if (zeroing)
1023 mp->m_len = 0;
1024 else if (mp->m_len > 0) {
1025 i += mp->m_len;
1026 if (i > len) {
1027 mp->m_len -= (i - len);
1028 zeroing = 1;
1029 }
1030 if (mp->m_len > 0)
1031 cnt++;
1032 }
1033 mp = mp->m_next;
1034 }
1035 }
1036 if (len > NFS_MAXDATA || len < 0 || i < len) {
1037 error = EIO;
1038 nfsm_reply(2 * NFSX_UNSIGNED);
1039 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1040 error = 0;
1041 goto nfsmout;
1042 }
1043 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
1044 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
1045 if (error) {
1046 vp = NULL;
1047 nfsm_reply(2 * NFSX_UNSIGNED);
1048 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1049 error = 0;
1050 goto nfsmout;
1051 }
1052 if (v3)
87de5057 1053 forat_ret = VOP_GETATTR(vp, &forat);
984263bc
MD
1054 if (vp->v_type != VREG) {
1055 if (v3)
1056 error = EINVAL;
1057 else
1058 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
1059 }
1060 if (!error) {
dadab5e9 1061 error = nfsrv_access(vp, VWRITE, cred, rdonly, td, 1);
984263bc
MD
1062 }
1063 if (error) {
1064 vput(vp);
1065 vp = NULL;
1066 nfsm_reply(NFSX_WCCDATA(v3));
1067 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1068 error = 0;
1069 goto nfsmout;
1070 }
1071
1072 if (len > 0) {
1073 MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP,
1074 M_WAITOK);
1075 uiop->uio_iov = iv = ivp;
1076 uiop->uio_iovcnt = cnt;
1077 mp = mrep;
1078 while (mp) {
1079 if (mp->m_len > 0) {
1080 ivp->iov_base = mtod(mp, caddr_t);
1081 ivp->iov_len = mp->m_len;
1082 ivp++;
1083 }
1084 mp = mp->m_next;
1085 }
1086
1087 /*
1088 * XXX
1089 * The IO_METASYNC flag indicates that all metadata (and not just
1090 * enough to ensure data integrity) mus be written to stable storage
1091 * synchronously.
1092 * (IO_METASYNC is not yet implemented in 4.4BSD-Lite.)
1093 */
1094 if (stable == NFSV3WRITE_UNSTABLE)
1095 ioflags = IO_NODELOCKED;
1096 else if (stable == NFSV3WRITE_DATASYNC)
1097 ioflags = (IO_SYNC | IO_NODELOCKED);
1098 else
1099 ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
1100 uiop->uio_resid = len;
1101 uiop->uio_rw = UIO_WRITE;
1102 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 1103 uiop->uio_td = NULL;
984263bc
MD
1104 uiop->uio_offset = off;
1105 error = VOP_WRITE(vp, uiop, ioflags, cred);
1106 nfsstats.srvvop_writes++;
1107 FREE((caddr_t)iv, M_TEMP);
1108 }
87de5057 1109 aftat_ret = VOP_GETATTR(vp, vap);
984263bc
MD
1110 vput(vp);
1111 vp = NULL;
1112 if (!error)
1113 error = aftat_ret;
1114 nfsm_reply(NFSX_PREOPATTR(v3) + NFSX_POSTOPORFATTR(v3) +
1115 2 * NFSX_UNSIGNED + NFSX_WRITEVERF(v3));
1116 if (v3) {
1117 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1118 if (error) {
1119 error = 0;
1120 goto nfsmout;
1121 }
1122 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1123 *tl++ = txdr_unsigned(retlen);
1124 /*
1125 * If nfs_async is set, then pretend the write was FILESYNC.
1126 */
1127 if (stable == NFSV3WRITE_UNSTABLE && !nfs_async)
1128 *tl++ = txdr_unsigned(stable);
1129 else
1130 *tl++ = txdr_unsigned(NFSV3WRITE_FILESYNC);
1131 /*
1132 * Actually, there is no need to txdr these fields,
1133 * but it may make the values more human readable,
1134 * for debugging purposes.
1135 */
1136 if (nfsver.tv_sec == 0)
1137 nfsver = boottime;
1138 *tl++ = txdr_unsigned(nfsver.tv_sec);
3a6f9faf 1139 *tl = txdr_unsigned(nfsver.tv_nsec / 1000);
984263bc
MD
1140 } else {
1141 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1142 nfsm_srvfillattr(vap, fp);
1143 }
1144nfsmout:
1145 if (vp)
1146 vput(vp);
1147 return(error);
1148}
1149
1150/*
1151 * NFS write service with write gathering support. Called when
1152 * nfsrvw_procrastinate > 0.
1153 * See: Chet Juszczak, "Improving the Write Performance of an NFS Server",
1154 * in Proc. of the Winter 1994 Usenix Conference, pg. 247-259, San Franscisco,
1155 * Jan. 1994.
1156 */
1157int
e851b29e
CP
1158nfsrv_writegather(struct nfsrv_descript **ndp, struct nfssvc_sock *slp,
1159 struct thread *td, struct mbuf **mrq)
984263bc 1160{
dadab5e9
MD
1161 struct iovec *ivp;
1162 struct mbuf *mp;
1163 struct nfsrv_descript *wp, *nfsd, *owp, *swp;
1164 struct nfs_fattr *fp;
1165 int i;
984263bc
MD
1166 struct iovec *iov;
1167 struct nfsrvw_delayhash *wpp;
1168 struct ucred *cred;
1169 struct vattr va, forat;
dadab5e9
MD
1170 u_int32_t *tl;
1171 int32_t t1;
984263bc 1172 caddr_t bpos, dpos;
e07fef60 1173 int error = 0, rdonly, len, forat_ret = 1;
165dba55 1174 int ioflags, aftat_ret = 1, adjust, v3, zeroing;
984263bc
MD
1175 char *cp2;
1176 struct mbuf *mb, *mb2, *mreq, *mrep, *md;
1177 struct vnode *vp = NULL;
1178 struct uio io, *uiop = &io;
e07fef60 1179 u_quad_t cur_usec;
984263bc
MD
1180
1181 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
1182#ifndef nolint
1183 i = 0;
1184 len = 0;
1185#endif
1186 *mrq = NULL;
1187 if (*ndp) {
1188 nfsd = *ndp;
1189 *ndp = NULL;
1190 mrep = nfsd->nd_mrep;
1191 md = nfsd->nd_md;
1192 dpos = nfsd->nd_dpos;
1193 cred = &nfsd->nd_cr;
1194 v3 = (nfsd->nd_flag & ND_NFSV3);
1195 LIST_INIT(&nfsd->nd_coalesce);
1196 nfsd->nd_mreq = NULL;
1197 nfsd->nd_stable = NFSV3WRITE_FILESYNC;
1198 cur_usec = nfs_curusec();
1199 nfsd->nd_time = cur_usec +
1200 (v3 ? nfsrvw_procrastinate_v3 : nfsrvw_procrastinate);
1201
1202 /*
1203 * Now, get the write header..
1204 */
1205 nfsm_srvmtofh(&nfsd->nd_fh);
1206 if (v3) {
1207 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1208 nfsd->nd_off = fxdr_hyper(tl);
1209 tl += 3;
1210 nfsd->nd_stable = fxdr_unsigned(int, *tl++);
1211 } else {
1212 nfsm_dissect(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1213 nfsd->nd_off = (off_t)fxdr_unsigned(u_int32_t, *++tl);
1214 tl += 2;
1215 if (nfs_async)
1216 nfsd->nd_stable = NFSV3WRITE_UNSTABLE;
1217 }
1218 len = fxdr_unsigned(int32_t, *tl);
1219 nfsd->nd_len = len;
1220 nfsd->nd_eoff = nfsd->nd_off + len;
1221
1222 /*
1223 * Trim the header out of the mbuf list and trim off any trailing
1224 * junk so that the mbuf list has only the write data.
1225 */
1226 zeroing = 1;
1227 i = 0;
1228 mp = mrep;
1229 while (mp) {
1230 if (mp == md) {
1231 zeroing = 0;
1232 adjust = dpos - mtod(mp, caddr_t);
1233 mp->m_len -= adjust;
1234 if (mp->m_len > 0 && adjust > 0)
1235 NFSMADV(mp, adjust);
1236 }
1237 if (zeroing)
1238 mp->m_len = 0;
1239 else {
1240 i += mp->m_len;
1241 if (i > len) {
1242 mp->m_len -= (i - len);
1243 zeroing = 1;
1244 }
1245 }
1246 mp = mp->m_next;
1247 }
1248 if (len > NFS_MAXDATA || len < 0 || i < len) {
1249nfsmout:
1250 m_freem(mrep);
1251 error = EIO;
1252 nfsm_writereply(2 * NFSX_UNSIGNED, v3);
1253 if (v3)
1254 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1255 nfsd->nd_mreq = mreq;
1256 nfsd->nd_mrep = NULL;
1257 nfsd->nd_time = 0;
1258 }
1259
1260 /*
1261 * Add this entry to the hash and time queues.
1262 */
165dba55 1263 crit_enter();
984263bc
MD
1264 owp = NULL;
1265 wp = slp->ns_tq.lh_first;
1266 while (wp && wp->nd_time < nfsd->nd_time) {
1267 owp = wp;
1268 wp = wp->nd_tq.le_next;
1269 }
1270 NFS_DPF(WG, ("Q%03x", nfsd->nd_retxid & 0xfff));
1271 if (owp) {
1272 LIST_INSERT_AFTER(owp, nfsd, nd_tq);
1273 } else {
1274 LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
1275 }
1276 if (nfsd->nd_mrep) {
1277 wpp = NWDELAYHASH(slp, nfsd->nd_fh.fh_fid.fid_data);
1278 owp = NULL;
1279 wp = wpp->lh_first;
1280 while (wp &&
1281 bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
1282 owp = wp;
1283 wp = wp->nd_hash.le_next;
1284 }
1285 while (wp && wp->nd_off < nfsd->nd_off &&
1286 !bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
1287 owp = wp;
1288 wp = wp->nd_hash.le_next;
1289 }
1290 if (owp) {
1291 LIST_INSERT_AFTER(owp, nfsd, nd_hash);
1292
1293 /*
1294 * Search the hash list for overlapping entries and
1295 * coalesce.
1296 */
1297 for(; nfsd && NFSW_CONTIG(owp, nfsd); nfsd = wp) {
1298 wp = nfsd->nd_hash.le_next;
1299 if (NFSW_SAMECRED(owp, nfsd))
1300 nfsrvw_coalesce(owp, nfsd);
1301 }
1302 } else {
1303 LIST_INSERT_HEAD(wpp, nfsd, nd_hash);
1304 }
1305 }
165dba55 1306 crit_exit();
984263bc
MD
1307 }
1308
1309 /*
1310 * Now, do VOP_WRITE()s for any one(s) that need to be done now
1311 * and generate the associated reply mbuf list(s).
1312 */
1313loop1:
1314 cur_usec = nfs_curusec();
165dba55 1315 crit_enter();
984263bc
MD
1316 for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = owp) {
1317 owp = nfsd->nd_tq.le_next;
1318 if (nfsd->nd_time > cur_usec)
1319 break;
1320 if (nfsd->nd_mreq)
1321 continue;
1322 NFS_DPF(WG, ("P%03x", nfsd->nd_retxid & 0xfff));
1323 LIST_REMOVE(nfsd, nd_tq);
1324 LIST_REMOVE(nfsd, nd_hash);
165dba55 1325 crit_exit();
984263bc
MD
1326 mrep = nfsd->nd_mrep;
1327 nfsd->nd_mrep = NULL;
1328 cred = &nfsd->nd_cr;
1329 v3 = (nfsd->nd_flag & ND_NFSV3);
1330 forat_ret = aftat_ret = 1;
1331 error = nfsrv_fhtovp(&nfsd->nd_fh, 1, &vp, cred, slp,
1332 nfsd->nd_nam, &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
1333 if (!error) {
1334 if (v3)
87de5057 1335 forat_ret = VOP_GETATTR(vp, &forat);
984263bc
MD
1336 if (vp->v_type != VREG) {
1337 if (v3)
1338 error = EINVAL;
1339 else
1340 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
1341 }
1342 } else {
1343 vp = NULL;
1344 }
1345 if (!error) {
dadab5e9 1346 error = nfsrv_access(vp, VWRITE, cred, rdonly, td, 1);
984263bc
MD
1347 }
1348
1349 if (nfsd->nd_stable == NFSV3WRITE_UNSTABLE)
1350 ioflags = IO_NODELOCKED;
1351 else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC)
1352 ioflags = (IO_SYNC | IO_NODELOCKED);
1353 else
1354 ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
1355 uiop->uio_rw = UIO_WRITE;
1356 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 1357 uiop->uio_td = NULL;
984263bc
MD
1358 uiop->uio_offset = nfsd->nd_off;
1359 uiop->uio_resid = nfsd->nd_eoff - nfsd->nd_off;
1360 if (uiop->uio_resid > 0) {
1361 mp = mrep;
1362 i = 0;
1363 while (mp) {
1364 if (mp->m_len > 0)
1365 i++;
1366 mp = mp->m_next;
1367 }
1368 uiop->uio_iovcnt = i;
1369 MALLOC(iov, struct iovec *, i * sizeof (struct iovec),
1370 M_TEMP, M_WAITOK);
1371 uiop->uio_iov = ivp = iov;
1372 mp = mrep;
1373 while (mp) {
1374 if (mp->m_len > 0) {
1375 ivp->iov_base = mtod(mp, caddr_t);
1376 ivp->iov_len = mp->m_len;
1377 ivp++;
1378 }
1379 mp = mp->m_next;
1380 }
1381 if (!error) {
1382 error = VOP_WRITE(vp, uiop, ioflags, cred);
1383 nfsstats.srvvop_writes++;
1384 }
1385 FREE((caddr_t)iov, M_TEMP);
1386 }
1387 m_freem(mrep);
1388 if (vp) {
87de5057 1389 aftat_ret = VOP_GETATTR(vp, &va);
984263bc
MD
1390 vput(vp);
1391 vp = NULL;
1392 }
1393
1394 /*
1395 * Loop around generating replies for all write rpcs that have
1396 * now been completed.
1397 */
1398 swp = nfsd;
1399 do {
1400 NFS_DPF(WG, ("R%03x", nfsd->nd_retxid & 0xfff));
1401 if (error) {
1402 nfsm_writereply(NFSX_WCCDATA(v3), v3);
1403 if (v3) {
1404 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1405 }
1406 } else {
1407 nfsm_writereply(NFSX_PREOPATTR(v3) +
1408 NFSX_POSTOPORFATTR(v3) + 2 * NFSX_UNSIGNED +
1409 NFSX_WRITEVERF(v3), v3);
1410 if (v3) {
1411 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1412 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1413 *tl++ = txdr_unsigned(nfsd->nd_len);
1414 *tl++ = txdr_unsigned(swp->nd_stable);
1415 /*
1416 * Actually, there is no need to txdr these fields,
1417 * but it may make the values more human readable,
1418 * for debugging purposes.
1419 */
1420 if (nfsver.tv_sec == 0)
1421 nfsver = boottime;
1422 *tl++ = txdr_unsigned(nfsver.tv_sec);
3a6f9faf 1423 *tl = txdr_unsigned(nfsver.tv_nsec / 1000);
984263bc
MD
1424 } else {
1425 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1426 nfsm_srvfillattr(&va, fp);
1427 }
1428 }
1429 nfsd->nd_mreq = mreq;
1430 if (nfsd->nd_mrep)
1431 panic("nfsrv_write: nd_mrep not free");
1432
1433 /*
1434 * Done. Put it at the head of the timer queue so that
1435 * the final phase can return the reply.
1436 */
165dba55 1437 crit_enter();
984263bc
MD
1438 if (nfsd != swp) {
1439 nfsd->nd_time = 0;
1440 LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
1441 }
1442 nfsd = swp->nd_coalesce.lh_first;
1443 if (nfsd) {
1444 LIST_REMOVE(nfsd, nd_tq);
1445 }
165dba55 1446 crit_exit();
984263bc 1447 } while (nfsd);
165dba55 1448 crit_enter();
984263bc
MD
1449 swp->nd_time = 0;
1450 LIST_INSERT_HEAD(&slp->ns_tq, swp, nd_tq);
165dba55 1451 crit_exit();
984263bc
MD
1452 goto loop1;
1453 }
165dba55 1454 crit_exit();
984263bc
MD
1455
1456 /*
1457 * Search for a reply to return.
1458 */
165dba55 1459 crit_enter();
984263bc
MD
1460 for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = nfsd->nd_tq.le_next)
1461 if (nfsd->nd_mreq) {
1462 NFS_DPF(WG, ("X%03x", nfsd->nd_retxid & 0xfff));
1463 LIST_REMOVE(nfsd, nd_tq);
1464 *mrq = nfsd->nd_mreq;
1465 *ndp = nfsd;
1466 break;
1467 }
165dba55 1468 crit_exit();
984263bc
MD
1469 return (0);
1470}
1471
1472/*
1473 * Coalesce the write request nfsd into owp. To do this we must:
1474 * - remove nfsd from the queues
1475 * - merge nfsd->nd_mrep into owp->nd_mrep
1476 * - update the nd_eoff and nd_stable for owp
1477 * - put nfsd on owp's nd_coalesce list
1478 * NB: Must be called at splsoftclock().
1479 */
1480static void
dadab5e9 1481nfsrvw_coalesce(struct nfsrv_descript *owp, struct nfsrv_descript *nfsd)
984263bc 1482{
dadab5e9
MD
1483 int overlap;
1484 struct mbuf *mp;
984263bc
MD
1485 struct nfsrv_descript *p;
1486
1487 NFS_DPF(WG, ("C%03x-%03x",
1488 nfsd->nd_retxid & 0xfff, owp->nd_retxid & 0xfff));
1489 LIST_REMOVE(nfsd, nd_hash);
1490 LIST_REMOVE(nfsd, nd_tq);
1491 if (owp->nd_eoff < nfsd->nd_eoff) {
1492 overlap = owp->nd_eoff - nfsd->nd_off;
1493 if (overlap < 0)
1494 panic("nfsrv_coalesce: bad off");
1495 if (overlap > 0)
1496 m_adj(nfsd->nd_mrep, overlap);
1497 mp = owp->nd_mrep;
1498 while (mp->m_next)
1499 mp = mp->m_next;
1500 mp->m_next = nfsd->nd_mrep;
1501 owp->nd_eoff = nfsd->nd_eoff;
1502 } else
1503 m_freem(nfsd->nd_mrep);
1504 nfsd->nd_mrep = NULL;
1505 if (nfsd->nd_stable == NFSV3WRITE_FILESYNC)
1506 owp->nd_stable = NFSV3WRITE_FILESYNC;
1507 else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC &&
1508 owp->nd_stable == NFSV3WRITE_UNSTABLE)
1509 owp->nd_stable = NFSV3WRITE_DATASYNC;
1510 LIST_INSERT_HEAD(&owp->nd_coalesce, nfsd, nd_tq);
1511
1512 /*
1513 * If nfsd had anything else coalesced into it, transfer them
1514 * to owp, otherwise their replies will never get sent.
1515 */
1516 for (p = nfsd->nd_coalesce.lh_first; p;
1517 p = nfsd->nd_coalesce.lh_first) {
1518 LIST_REMOVE(p, nd_tq);
1519 LIST_INSERT_HEAD(&owp->nd_coalesce, p, nd_tq);
1520 }
1521}
1522
1523/*
1524 * nfs create service
1525 * now does a truncate to 0 length via. setattr if it already exists
1526 */
1527int
e851b29e
CP
1528nfsrv_create(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1529 struct thread *td, struct mbuf **mrq)
984263bc
MD
1530{
1531 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1532 struct sockaddr *nam = nfsd->nd_nam;
1533 caddr_t dpos = nfsd->nd_dpos;
1534 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 1535 struct nfs_fattr *fp;
984263bc 1536 struct vattr va, dirfor, diraft;
dadab5e9
MD
1537 struct vattr *vap = &va;
1538 struct nfsv2_sattr *sp;
1539 u_int32_t *tl;
fad57d0e 1540 struct nlookupdata nd;
dadab5e9 1541 int32_t t1;
984263bc 1542 caddr_t bpos;
e07fef60 1543 int error = 0, rdev, len, tsize, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
1544 int v3 = (nfsd->nd_flag & ND_NFSV3), how, exclusive_flag = 0;
1545 caddr_t cp;
1546 char *cp2;
1547 struct mbuf *mb, *mb2, *mreq;
fad57d0e
MD
1548 struct vnode *dirp;
1549 struct vnode *dvp;
1550 struct vnode *vp;
984263bc
MD
1551 nfsfh_t nfh;
1552 fhandle_t *fhp;
e07fef60 1553 u_quad_t tempsize;
984263bc
MD
1554 u_char cverf[NFSX_V3CREATEVERF];
1555
1556 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
1557#ifndef nolint
1558 rdev = 0;
1559#endif
fad57d0e
MD
1560 nlookup_zero(&nd);
1561 dirp = NULL;
1562 dvp = NULL;
1563 vp = NULL;
984263bc
MD
1564
1565 fhp = &nfh.fh_generic;
1566 nfsm_srvmtofh(fhp);
1567 nfsm_srvnamesiz(len);
1568
984263bc
MD
1569 /*
1570 * Call namei and do initial cleanup to get a few things
1571 * out of the way. If we get an initial error we cleanup
1572 * and return here to avoid special-casing the invalid nd
1573 * structure through the rest of the case. dirp may be
1574 * set even if an error occurs, but the nd structure will not
1575 * be valid at all if an error occurs so we have to invalidate it
1576 * prior to calling nfsm_reply ( which might goto nfsmout ).
1577 */
fad57d0e
MD
1578 error = nfs_namei(&nd, cred, NAMEI_CREATE, &dvp, &vp,
1579 fhp, len, slp, nam, &md, &dpos, &dirp,
1580 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc
MD
1581 if (dirp) {
1582 if (v3) {
87de5057 1583 dirfor_ret = VOP_GETATTR(dirp, &dirfor);
984263bc
MD
1584 } else {
1585 vrele(dirp);
1586 dirp = NULL;
1587 }
1588 }
1589 if (error) {
1590 nfsm_reply(NFSX_WCCDATA(v3));
1591 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1592 error = 0;
1593 goto nfsmout;
1594 }
1595
1596 /*
1597 * No error. Continue. State:
1598 *
984263bc 1599 * dirp may be valid
fad57d0e
MD
1600 * vp may be valid or NULL if the target does not
1601 * exist.
1602 * dvp is valid
984263bc
MD
1603 *
1604 * The error state is set through the code and we may also do some
1605 * opportunistic releasing of vnodes to avoid holding locks through
1606 * NFS I/O. The cleanup at the end is a catch-all
1607 */
1608
1609 VATTR_NULL(vap);
1610 if (v3) {
1611 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
1612 how = fxdr_unsigned(int, *tl);
1613 switch (how) {
1614 case NFSV3CREATE_GUARDED:
fad57d0e 1615 if (vp) {
984263bc
MD
1616 error = EEXIST;
1617 break;
1618 }
1619 /* fall through */
1620 case NFSV3CREATE_UNCHECKED:
1621 nfsm_srvsattr(vap);
1622 break;
1623 case NFSV3CREATE_EXCLUSIVE:
1624 nfsm_dissect(cp, caddr_t, NFSX_V3CREATEVERF);
1625 bcopy(cp, cverf, NFSX_V3CREATEVERF);
1626 exclusive_flag = 1;
1627 break;
1628 };
1629 vap->va_type = VREG;
1630 } else {
1631 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
1632 vap->va_type = IFTOVT(fxdr_unsigned(u_int32_t, sp->sa_mode));
1633 if (vap->va_type == VNON)
1634 vap->va_type = VREG;
1635 vap->va_mode = nfstov_mode(sp->sa_mode);
1636 switch (vap->va_type) {
1637 case VREG:
1638 tsize = fxdr_unsigned(int32_t, sp->sa_size);
1639 if (tsize != -1)
1640 vap->va_size = (u_quad_t)tsize;
1641 break;
1642 case VCHR:
1643 case VBLK:
1644 case VFIFO:
1645 rdev = fxdr_unsigned(long, sp->sa_size);
1646 break;
1647 default:
1648 break;
1649 };
1650 }
1651
1652 /*
1653 * Iff doesn't exist, create it
1654 * otherwise just truncate to 0 length
1655 * should I set the mode too ?
1656 *
1657 * The only possible error we can have at this point is EEXIST.
1658 * nd.ni_vp will also be non-NULL in that case.
1659 */
fad57d0e 1660 if (vp == NULL) {
984263bc
MD
1661 if (vap->va_mode == (mode_t)VNOVAL)
1662 vap->va_mode = 0;
1663 if (vap->va_type == VREG || vap->va_type == VSOCK) {
d6593715
MD
1664 vput(dvp);
1665 dvp = NULL;
fad57d0e
MD
1666 error = VOP_NCREATE(nd.nl_ncp, &vp, nd.nl_cred, vap);
1667 if (error == 0) {
984263bc
MD
1668 if (exclusive_flag) {
1669 exclusive_flag = 0;
1670 VATTR_NULL(vap);
1671 bcopy(cverf, (caddr_t)&vap->va_atime,
1672 NFSX_V3CREATEVERF);
87de5057 1673 error = VOP_SETATTR(vp, vap, cred);
984263bc
MD
1674 }
1675 }
1676 } else if (
1677 vap->va_type == VCHR ||
1678 vap->va_type == VBLK ||
1679 vap->va_type == VFIFO
1680 ) {
1681 /*
1682 * Handle SysV FIFO node special cases. All other
1683 * devices require super user to access.
1684 */
1685 if (vap->va_type == VCHR && rdev == 0xffffffff)
1686 vap->va_type = VFIFO;
1687 if (vap->va_type != VFIFO &&
dadab5e9 1688 (error = suser_cred(cred, 0))) {
984263bc
MD
1689 goto nfsmreply0;
1690 }
1691 vap->va_rdev = rdev;
984263bc 1692
d6593715
MD
1693 vput(dvp);
1694 dvp = NULL;
fad57d0e
MD
1695 error = VOP_NMKNOD(nd.nl_ncp, &vp, nd.nl_cred, vap);
1696 if (error)
984263bc 1697 goto nfsmreply0;
fad57d0e
MD
1698#if 0
1699 /*
1700 * XXX what is this junk supposed to do ?
1701 */
1702
1703 vput(vp);
1704 vp = NULL;
984263bc
MD
1705
1706 /*
1707 * release dvp prior to lookup
1708 */
fad57d0e
MD
1709 vput(dvp);
1710 dvp = NULL;
984263bc
MD
1711
1712 /*
1713 * Setup for lookup.
1714 *
1715 * Even though LOCKPARENT was cleared, ni_dvp may
1716 * be garbage.
1717 */
2b69e610
MD
1718 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
1719 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT);
dadab5e9 1720 nd.ni_cnd.cn_td = td;
984263bc
MD
1721 nd.ni_cnd.cn_cred = cred;
1722
1723 error = lookup(&nd);
1724 nd.ni_dvp = NULL;
1725
1726 if (error != 0) {
1727 nfsm_reply(0);
1728 /* fall through on certain errors */
1729 }
1730 nfsrv_object_create(nd.ni_vp);
2b69e610 1731 if (nd.ni_cnd.cn_flags & CNP_ISSYMLINK) {
984263bc
MD
1732 error = EINVAL;
1733 goto nfsmreply0;
1734 }
fad57d0e 1735#endif
984263bc
MD
1736 } else {
1737 error = ENXIO;
1738 }
1739 } else {
1740 if (vap->va_size != -1) {
fad57d0e
MD
1741 error = nfsrv_access(vp, VWRITE, cred,
1742 (nd.nl_flags & NLC_NFS_RDONLY), td, 0);
984263bc 1743 if (!error) {
984263bc
MD
1744 tempsize = vap->va_size;
1745 VATTR_NULL(vap);
1746 vap->va_size = tempsize;
87de5057 1747 error = VOP_SETATTR(vp, vap, cred);
984263bc
MD
1748 }
1749 }
1750 }
1751
1752 if (!error) {
1753 bzero((caddr_t)fhp, sizeof(nfh));
fad57d0e
MD
1754 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1755 error = VFS_VPTOFH(vp, &fhp->fh_fid);
984263bc 1756 if (!error)
87de5057 1757 error = VOP_GETATTR(vp, vap);
984263bc
MD
1758 }
1759 if (v3) {
1760 if (exclusive_flag && !error &&
1761 bcmp(cverf, (caddr_t)&vap->va_atime, NFSX_V3CREATEVERF))
1762 error = EEXIST;
87de5057 1763 diraft_ret = VOP_GETATTR(dirp, &diraft);
984263bc
MD
1764 vrele(dirp);
1765 dirp = NULL;
1766 }
1767 nfsm_reply(NFSX_SRVFH(v3) + NFSX_FATTR(v3) + NFSX_WCCDATA(v3));
1768 if (v3) {
1769 if (!error) {
1770 nfsm_srvpostop_fh(fhp);
1771 nfsm_srvpostop_attr(0, vap);
1772 }
1773 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1774 error = 0;
1775 } else {
1776 nfsm_srvfhtom(fhp, v3);
1777 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1778 nfsm_srvfillattr(vap, fp);
1779 }
1780 goto nfsmout;
1781
1782nfsmreply0:
1783 nfsm_reply(0);
1784 error = 0;
1785 /* fall through */
1786
1787nfsmout:
984263bc
MD
1788 if (dirp)
1789 vrele(dirp);
fad57d0e
MD
1790 nlookup_done(&nd);
1791 if (dvp) {
1792 if (dvp == vp)
1793 vrele(dvp);
984263bc 1794 else
fad57d0e 1795 vput(dvp);
984263bc 1796 }
fad57d0e
MD
1797 if (vp)
1798 vput(vp);
984263bc
MD
1799 return (error);
1800}
1801
1802/*
1803 * nfs v3 mknod service
1804 */
1805int
e851b29e
CP
1806nfsrv_mknod(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1807 struct thread *td, struct mbuf **mrq)
984263bc
MD
1808{
1809 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1810 struct sockaddr *nam = nfsd->nd_nam;
1811 caddr_t dpos = nfsd->nd_dpos;
1812 struct ucred *cred = &nfsd->nd_cr;
1813 struct vattr va, dirfor, diraft;
dadab5e9
MD
1814 struct vattr *vap = &va;
1815 u_int32_t *tl;
fad57d0e 1816 struct nlookupdata nd;
dadab5e9 1817 int32_t t1;
984263bc 1818 caddr_t bpos;
e07fef60 1819 int error = 0, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
1820 u_int32_t major, minor;
1821 enum vtype vtyp;
1822 char *cp2;
1823 struct mbuf *mb, *mb2, *mreq;
fad57d0e
MD
1824 struct vnode *dirp;
1825 struct vnode *dvp;
1826 struct vnode *vp;
984263bc
MD
1827 nfsfh_t nfh;
1828 fhandle_t *fhp;
984263bc
MD
1829
1830 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
1831 nlookup_zero(&nd);
1832 dirp = NULL;
1833 dvp = NULL;
1834 vp = NULL;
984263bc
MD
1835
1836 fhp = &nfh.fh_generic;
1837 nfsm_srvmtofh(fhp);
1838 nfsm_srvnamesiz(len);
1839
984263bc
MD
1840 /*
1841 * Handle nfs_namei() call. If an error occurs, the nd structure
1842 * is not valid. However, nfsm_*() routines may still jump to
1843 * nfsmout.
1844 */
1845
fad57d0e
MD
1846 error = nfs_namei(&nd, cred, NAMEI_CREATE, &dvp, &vp,
1847 fhp, len, slp, nam, &md, &dpos, &dirp,
1848 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 1849 if (dirp)
87de5057 1850 dirfor_ret = VOP_GETATTR(dirp, &dirfor);
984263bc
MD
1851 if (error) {
1852 nfsm_reply(NFSX_WCCDATA(1));
1853 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1854 error = 0;
1855 goto nfsmout;
1856 }
1857 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
1858 vtyp = nfsv3tov_type(*tl);
1859 if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) {
1860 error = NFSERR_BADTYPE;
1861 goto out;
1862 }
1863 VATTR_NULL(vap);
1864 nfsm_srvsattr(vap);
1865 if (vtyp == VCHR || vtyp == VBLK) {
1866 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1867 major = fxdr_unsigned(u_int32_t, *tl++);
1868 minor = fxdr_unsigned(u_int32_t, *tl);
1869 vap->va_rdev = makeudev(major, minor);
1870 }
1871
1872 /*
1873 * Iff doesn't exist, create it.
1874 */
fad57d0e 1875 if (vp) {
984263bc
MD
1876 error = EEXIST;
1877 goto out;
1878 }
1879 vap->va_type = vtyp;
1880 if (vap->va_mode == (mode_t)VNOVAL)
1881 vap->va_mode = 0;
1882 if (vtyp == VSOCK) {
fad57d0e 1883 error = VOP_NCREATE(nd.nl_ncp, &vp, nd.nl_cred, vap);
984263bc 1884 } else {
dadab5e9 1885 if (vtyp != VFIFO && (error = suser_cred(cred, 0)))
984263bc 1886 goto out;
984263bc 1887
fad57d0e
MD
1888 error = VOP_NMKNOD(nd.nl_ncp, &vp, nd.nl_cred, vap);
1889 if (error)
984263bc 1890 goto out;
fad57d0e
MD
1891
1892#if 0
1893 vput(vp);
1894 vp = NULL;
984263bc
MD
1895
1896 /*
1897 * Release dvp prior to lookup
1898 */
fad57d0e
MD
1899 vput(dvp);
1900 dvp = NULL;
984263bc 1901
fad57d0e
MD
1902 /*
1903 * XXX what is this stuff for?
1904 */
dadab5e9 1905 KKASSERT(td->td_proc);
2b69e610
MD
1906 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
1907 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT);
dadab5e9
MD
1908 nd.ni_cnd.cn_td = td;
1909 nd.ni_cnd.cn_cred = td->td_proc->p_ucred;
984263bc
MD
1910
1911 error = lookup(&nd);
1912 nd.ni_dvp = NULL;
1913
1914 if (error)
1915 goto out;
2b69e610 1916 if (nd.ni_cnd.cn_flags & CNP_ISSYMLINK)
984263bc 1917 error = EINVAL;
fad57d0e 1918#endif
984263bc
MD
1919 }
1920
1921 /*
1922 * send response, cleanup, return.
1923 */
1924out:
fad57d0e
MD
1925 nlookup_done(&nd);
1926 if (dvp) {
1927 if (dvp == vp)
1928 vrele(dvp);
984263bc 1929 else
fad57d0e
MD
1930 vput(dvp);
1931 dvp = NULL;
984263bc 1932 }
984263bc
MD
1933 if (!error) {
1934 bzero((caddr_t)fhp, sizeof(nfh));
1935 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1936 error = VFS_VPTOFH(vp, &fhp->fh_fid);
1937 if (!error)
87de5057 1938 error = VOP_GETATTR(vp, vap);
984263bc
MD
1939 }
1940 if (vp) {
1941 vput(vp);
1942 vp = NULL;
984263bc 1943 }
87de5057 1944 diraft_ret = VOP_GETATTR(dirp, &diraft);
984263bc
MD
1945 if (dirp) {
1946 vrele(dirp);
1947 dirp = NULL;
1948 }
1949 nfsm_reply(NFSX_SRVFH(1) + NFSX_POSTOPATTR(1) + NFSX_WCCDATA(1));
1950 if (!error) {
1951 nfsm_srvpostop_fh(fhp);
1952 nfsm_srvpostop_attr(0, vap);
1953 }
1954 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1955 return (0);
1956nfsmout:
1957 if (dirp)
1958 vrele(dirp);
fad57d0e
MD
1959 nlookup_done(&nd);
1960 if (dvp) {
1961 if (dvp == vp)
1962 vrele(dvp);
984263bc 1963 else
fad57d0e 1964 vput(dvp);
984263bc 1965 }
fad57d0e
MD
1966 if (vp)
1967 vput(vp);
984263bc
MD
1968 return (error);
1969}
1970
1971/*
1972 * nfs remove service
1973 */
1974int
e851b29e
CP
1975nfsrv_remove(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1976 struct thread *td, struct mbuf **mrq)
984263bc
MD
1977{
1978 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1979 struct sockaddr *nam = nfsd->nd_nam;
1980 caddr_t dpos = nfsd->nd_dpos;
1981 struct ucred *cred = &nfsd->nd_cr;
fad57d0e 1982 struct nlookupdata nd;
dadab5e9
MD
1983 u_int32_t *tl;
1984 int32_t t1;
984263bc 1985 caddr_t bpos;
e07fef60 1986 int error = 0, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
1987 int v3 = (nfsd->nd_flag & ND_NFSV3);
1988 char *cp2;
1989 struct mbuf *mb, *mreq;
1990 struct vnode *dirp;
fad57d0e
MD
1991 struct vnode *dvp;
1992 struct vnode *vp;
984263bc
MD
1993 struct vattr dirfor, diraft;
1994 nfsfh_t nfh;
1995 fhandle_t *fhp;
984263bc
MD
1996
1997 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
1998 nlookup_zero(&nd);
1999 dirp = NULL;
2000 dvp = NULL;
2001 vp = NULL;
984263bc
MD
2002
2003 fhp = &nfh.fh_generic;
2004 nfsm_srvmtofh(fhp);
2005 nfsm_srvnamesiz(len);
2006
fad57d0e
MD
2007 error = nfs_namei(&nd, cred, NAMEI_DELETE, &dvp, &vp,
2008 fhp, len, slp, nam, &md, &dpos, &dirp,
2009 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2010 if (dirp) {
fad57d0e 2011 if (v3)
87de5057 2012 dirfor_ret = VOP_GETATTR(dirp, &dirfor);
984263bc
MD
2013 }
2014 if (error == 0) {
fad57d0e 2015 if (vp->v_type == VDIR) {
984263bc
MD
2016 error = EPERM; /* POSIX */
2017 goto out;
2018 }
2019 /*
2020 * The root of a mounted filesystem cannot be deleted.
2021 */
fad57d0e 2022 if (vp->v_flag & VROOT) {
984263bc
MD
2023 error = EBUSY;
2024 goto out;
2025 }
2026out:
2027 if (!error) {
d9ba7ca9
MD
2028 if (dvp) {
2029 if (dvp == vp)
2030 vrele(dvp);
2031 else
2032 vput(dvp);
2033 dvp = NULL;
2034 }
2035 if (vp) {
2036 vput(vp);
2037 vp = NULL;
2038 }
fad57d0e 2039 error = VOP_NREMOVE(nd.nl_ncp, nd.nl_cred);
984263bc
MD
2040 }
2041 }
fad57d0e 2042 if (dirp && v3)
87de5057 2043 diraft_ret = VOP_GETATTR(dirp, &diraft);
984263bc
MD
2044 nfsm_reply(NFSX_WCCDATA(v3));
2045 if (v3) {
2046 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2047 error = 0;
2048 }
2049nfsmout:
fad57d0e
MD
2050 nlookup_done(&nd);
2051 if (dirp)
2052 vrele(dirp);
2053 if (dvp) {
2054 if (dvp == vp)
2055 vrele(dvp);
984263bc 2056 else
fad57d0e 2057 vput(dvp);
984263bc 2058 }
fad57d0e
MD
2059 if (vp)
2060 vput(vp);
984263bc
MD
2061 return(error);
2062}
2063
2064/*
2065 * nfs rename service
2066 */
2067int
e851b29e
CP
2068nfsrv_rename(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2069 struct thread *td, struct mbuf **mrq)
984263bc
MD
2070{
2071 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2072 struct sockaddr *nam = nfsd->nd_nam;
2073 caddr_t dpos = nfsd->nd_dpos;
2074 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2075 u_int32_t *tl;
2076 int32_t t1;
984263bc 2077 caddr_t bpos;
e07fef60 2078 int error = 0, len, len2, fdirfor_ret = 1, fdiraft_ret = 1;
984263bc
MD
2079 int tdirfor_ret = 1, tdiraft_ret = 1;
2080 int v3 = (nfsd->nd_flag & ND_NFSV3);
2081 char *cp2;
2082 struct mbuf *mb, *mreq;
fad57d0e
MD
2083 struct nlookupdata fromnd, tond;
2084 struct vnode *fvp, *fdirp;
2085 struct vnode *tvp, *tdirp;
2086 struct namecache *ncp;
984263bc
MD
2087 struct vattr fdirfor, fdiraft, tdirfor, tdiraft;
2088 nfsfh_t fnfh, tnfh;
2089 fhandle_t *ffhp, *tfhp;
984263bc
MD
2090 uid_t saved_uid;
2091
2092 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2093#ifndef nolint
2094 fvp = (struct vnode *)0;
2095#endif
2096 ffhp = &fnfh.fh_generic;
2097 tfhp = &tnfh.fh_generic;
2098
2099 /*
2100 * Clear fields incase goto nfsmout occurs from macro.
2101 */
2102
fad57d0e
MD
2103 nlookup_zero(&fromnd);
2104 nlookup_zero(&tond);
2105 fdirp = NULL;
2106 tdirp = NULL;
984263bc
MD
2107
2108 nfsm_srvmtofh(ffhp);
2109 nfsm_srvnamesiz(len);
2110 /*
2111 * Remember our original uid so that we can reset cr_uid before
2112 * the second nfs_namei() call, in case it is remapped.
2113 */
2114 saved_uid = cred->cr_uid;
fad57d0e
MD
2115 error = nfs_namei(&fromnd, cred, NAMEI_DELETE, NULL, NULL,
2116 ffhp, len, slp, nam, &md, &dpos, &fdirp,
2117 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2118 if (fdirp) {
fad57d0e 2119 if (v3)
87de5057 2120 fdirfor_ret = VOP_GETATTR(fdirp, &fdirfor);
984263bc
MD
2121 }
2122 if (error) {
2123 nfsm_reply(2 * NFSX_WCCDATA(v3));
2124 nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
2125 nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
2126 error = 0;
2127 goto nfsmout;
2128 }
fad57d0e
MD
2129
2130 /*
2131 * We have to unlock the from ncp before we can safely lookup
2132 * the target ncp.
2133 */
2134 KKASSERT(fromnd.nl_flags & NLC_NCPISLOCKED);
2135 cache_unlock(fromnd.nl_ncp);
2136 fromnd.nl_flags &= ~NLC_NCPISLOCKED;
984263bc
MD
2137 nfsm_srvmtofh(tfhp);
2138 nfsm_strsiz(len2, NFS_MAXNAMLEN);
2139 cred->cr_uid = saved_uid;
fad57d0e
MD
2140
2141 error = nfs_namei(&tond, cred, NAMEI_RENAME, NULL, NULL,
2142 tfhp, len2, slp, nam, &md, &dpos, &tdirp,
2143 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2144 if (tdirp) {
fad57d0e 2145 if (v3)
87de5057 2146 tdirfor_ret = VOP_GETATTR(tdirp, &tdirfor);
984263bc
MD
2147 }
2148 if (error)
2149 goto out1;
2150
fad57d0e
MD
2151 /*
2152 * relock the source
2153 */
2154 if (cache_lock_nonblock(fromnd.nl_ncp) == 0) {
2155 cache_resolve(fromnd.nl_ncp, fromnd.nl_cred);
2156 } else if (fromnd.nl_ncp > tond.nl_ncp) {
2157 cache_lock(fromnd.nl_ncp);
2158 cache_resolve(fromnd.nl_ncp, fromnd.nl_cred);
2159 } else {
2160 cache_unlock(tond.nl_ncp);
2161 cache_lock(fromnd.nl_ncp);
2162 cache_resolve(fromnd.nl_ncp, fromnd.nl_cred);
2163 cache_lock(tond.nl_ncp);
2164 cache_resolve(tond.nl_ncp, tond.nl_cred);
2165 }
2166 fromnd.nl_flags |= NLC_NCPISLOCKED;
2167
2168 tvp = tond.nl_ncp->nc_vp;
2169 fvp = fromnd.nl_ncp->nc_vp;
2170
984263bc
MD
2171 if (tvp != NULL) {
2172 if (fvp->v_type == VDIR && tvp->v_type != VDIR) {
2173 if (v3)
2174 error = EEXIST;
2175 else
2176 error = EISDIR;
2177 goto out;
2178 } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) {
2179 if (v3)
2180 error = EEXIST;
2181 else
2182 error = ENOTDIR;
2183 goto out;
2184 }
2185 if (tvp->v_type == VDIR && tvp->v_mountedhere) {
2186 if (v3)
2187 error = EXDEV;
2188 else
2189 error = ENOTEMPTY;
2190 goto out;
2191 }
2192 }
2193 if (fvp->v_type == VDIR && fvp->v_mountedhere) {
2194 if (v3)
2195 error = EXDEV;
2196 else
2197 error = ENOTEMPTY;
2198 goto out;
2199 }
fad57d0e 2200 if (fromnd.nl_ncp->nc_mount != tond.nl_ncp->nc_mount) {
984263bc
MD
2201 if (v3)
2202 error = EXDEV;
2203 else
2204 error = ENOTEMPTY;
2205 goto out;
2206 }
fad57d0e 2207 if (fromnd.nl_ncp == tond.nl_ncp->nc_parent) {
984263bc
MD
2208 if (v3)
2209 error = EINVAL;
2210 else
2211 error = ENOTEMPTY;
2212 }
fad57d0e
MD
2213
2214 /*
2215 * You cannot rename a source into itself or a subdirectory of itself.
2216 * We check this by travsering the target directory upwards looking
2217 * for a match against the source.
2218 */
2219 if (error == 0) {
2220 for (ncp = tond.nl_ncp; ncp; ncp = ncp->nc_parent) {
2221 if (fromnd.nl_ncp == ncp) {
2222 error = EINVAL;
2223 break;
2224 }
2225 }
2226 }
2227
984263bc
MD
2228 /*
2229 * If source is the same as the destination (that is the
2230 * same vnode with the same name in the same directory),
2231 * then there is nothing to do.
2232 */
fad57d0e 2233 if (fromnd.nl_ncp == tond.nl_ncp)
984263bc
MD
2234 error = -1;
2235out:
2236 if (!error) {
2237 /*
fad57d0e 2238 * The VOP_NRENAME function releases all vnode references &
984263bc
MD
2239 * locks prior to returning so we need to clear the pointers
2240 * to bypass cleanup code later on.
2241 */
fad57d0e 2242 error = VOP_NRENAME(fromnd.nl_ncp, tond.nl_ncp, tond.nl_cred);
984263bc
MD
2243 } else {
2244 if (error == -1)
2245 error = 0;
2246 }
2247 /* fall through */
2248
2249out1:
2250 if (fdirp)
87de5057 2251 fdiraft_ret = VOP_GETATTR(fdirp, &fdiraft);
984263bc 2252 if (tdirp)
87de5057 2253 tdiraft_ret = VOP_GETATTR(tdirp, &tdiraft);
984263bc
MD
2254 nfsm_reply(2 * NFSX_WCCDATA(v3));
2255 if (v3) {
2256 nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
2257 nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
2258 }
2259 error = 0;
2260 /* fall through */
2261
2262nfsmout:
984263bc
MD
2263 if (tdirp)
2264 vrele(tdirp);
fad57d0e 2265 nlookup_done(&tond);
984263bc
MD
2266 if (fdirp)
2267 vrele(fdirp);
fad57d0e 2268 nlookup_done(&fromnd);
984263bc
MD
2269 return (error);
2270}
2271
2272/*
2273 * nfs link service
2274 */
2275int
e851b29e
CP
2276nfsrv_link(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2277 struct thread *td, struct mbuf **mrq)
984263bc
MD
2278{
2279 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2280 struct sockaddr *nam = nfsd->nd_nam;
2281 caddr_t dpos = nfsd->nd_dpos;
2282 struct ucred *cred = &nfsd->nd_cr;
fad57d0e 2283 struct nlookupdata nd;
dadab5e9
MD
2284 u_int32_t *tl;
2285 int32_t t1;
984263bc 2286 caddr_t bpos;
e07fef60 2287 int error = 0, rdonly, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2288 int getret = 1, v3 = (nfsd->nd_flag & ND_NFSV3);
2289 char *cp2;
2290 struct mbuf *mb, *mreq;
fad57d0e
MD
2291 struct vnode *dirp;
2292 struct vnode *dvp;
2293 struct vnode *vp;
2294 struct vnode *xp;
984263bc
MD
2295 struct vattr dirfor, diraft, at;
2296 nfsfh_t nfh, dnfh;
2297 fhandle_t *fhp, *dfhp;
984263bc
MD
2298
2299 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2300 nlookup_zero(&nd);
2301 dirp = dvp = vp = xp = NULL;
984263bc
MD
2302
2303 fhp = &nfh.fh_generic;
2304 dfhp = &dnfh.fh_generic;
2305 nfsm_srvmtofh(fhp);
2306 nfsm_srvmtofh(dfhp);
2307 nfsm_srvnamesiz(len);
2308
fad57d0e 2309 error = nfsrv_fhtovp(fhp, FALSE, &xp, cred, slp, nam,
984263bc
MD
2310 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
2311 if (error) {
2312 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2313 nfsm_srvpostop_attr(getret, &at);
2314 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
fad57d0e 2315 xp = NULL;
984263bc
MD
2316 error = 0;
2317 goto nfsmout;
2318 }
fad57d0e 2319 if (xp->v_type == VDIR) {
984263bc
MD
2320 error = EPERM; /* POSIX */
2321 goto out1;
2322 }
fad57d0e
MD
2323
2324 error = nfs_namei(&nd, cred, NAMEI_CREATE, &dvp, &vp,
2325 dfhp, len, slp, nam, &md, &dpos, &dirp,
2326 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2327 if (dirp) {
fad57d0e 2328 if (v3)
87de5057 2329 dirfor_ret = VOP_GETATTR(dirp, &dirfor);
984263bc
MD
2330 }
2331 if (error)
2332 goto out1;
2333
fad57d0e 2334 if (vp != NULL) {
984263bc
MD
2335 error = EEXIST;
2336 goto out;
2337 }
fad57d0e 2338 if (xp->v_mount != dvp->v_mount)
984263bc
MD
2339 error = EXDEV;
2340out:
2341 if (!error) {
fad57d0e 2342 error = VOP_NLINK(nd.nl_ncp, xp, nd.nl_cred);
984263bc
MD
2343 }
2344 /* fall through */
2345
2346out1:
2347 if (v3)
87de5057 2348 getret = VOP_GETATTR(xp, &at);
984263bc 2349 if (dirp)
87de5057 2350 diraft_ret = VOP_GETATTR(dirp, &diraft);
984263bc
MD
2351 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2352 if (v3) {
2353 nfsm_srvpostop_attr(getret, &at);
2354 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2355 error = 0;
2356 }
2357 /* fall through */
2358
2359nfsmout:
fad57d0e 2360 nlookup_done(&nd);
984263bc
MD
2361 if (dirp)
2362 vrele(dirp);
fad57d0e
MD
2363 if (xp)
2364 vrele(xp);
2365 if (dvp) {
2366 if (dvp == vp)
2367 vrele(dvp);
984263bc 2368 else
fad57d0e 2369 vput(dvp);
984263bc 2370 }
fad57d0e
MD
2371 if (vp)
2372 vput(vp);
984263bc
MD
2373 return(error);
2374}
2375
2376/*
2377 * nfs symbolic link service
2378 */
2379int
e851b29e
CP
2380nfsrv_symlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2381 struct thread *td, struct mbuf **mrq)
984263bc
MD
2382{
2383 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2384 struct sockaddr *nam = nfsd->nd_nam;
2385 caddr_t dpos = nfsd->nd_dpos;
2386 struct ucred *cred = &nfsd->nd_cr;
2387 struct vattr va, dirfor, diraft;
fad57d0e 2388 struct nlookupdata nd;
dadab5e9
MD
2389 struct vattr *vap = &va;
2390 u_int32_t *tl;
2391 int32_t t1;
984263bc
MD
2392 struct nfsv2_sattr *sp;
2393 char *bpos, *pathcp = (char *)0, *cp2;
2394 struct uio io;
2395 struct iovec iv;
e07fef60 2396 int error = 0, len, len2, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2397 int v3 = (nfsd->nd_flag & ND_NFSV3);
2398 struct mbuf *mb, *mreq, *mb2;
fad57d0e
MD
2399 struct vnode *dirp;
2400 struct vnode *vp;
984263bc
MD
2401 nfsfh_t nfh;
2402 fhandle_t *fhp;
984263bc
MD
2403
2404 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2405 nlookup_zero(&nd);
2406 dirp = vp = NULL;
984263bc
MD
2407
2408 fhp = &nfh.fh_generic;
2409 nfsm_srvmtofh(fhp);
2410 nfsm_srvnamesiz(len);
fad57d0e
MD
2411
2412 error = nfs_namei(&nd, cred, NAMEI_CREATE, NULL, &vp,
2413 fhp, len, slp, nam, &md, &dpos, &dirp,
2414 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2415 if (dirp) {
fad57d0e 2416 if (v3)
87de5057 2417 dirfor_ret = VOP_GETATTR(dirp, &dirfor);
984263bc
MD
2418 }
2419 if (error)
2420 goto out;
2421
2422 VATTR_NULL(vap);
2423 if (v3)
2424 nfsm_srvsattr(vap);
2425 nfsm_strsiz(len2, NFS_MAXPATHLEN);
2426 MALLOC(pathcp, caddr_t, len2 + 1, M_TEMP, M_WAITOK);
2427 iv.iov_base = pathcp;
2428 iv.iov_len = len2;
2429 io.uio_resid = len2;
2430 io.uio_offset = 0;
2431 io.uio_iov = &iv;
2432 io.uio_iovcnt = 1;
2433 io.uio_segflg = UIO_SYSSPACE;
2434 io.uio_rw = UIO_READ;
dadab5e9 2435 io.uio_td = NULL;
984263bc
MD
2436 nfsm_mtouio(&io, len2);
2437 if (!v3) {
2438 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
2439 vap->va_mode = nfstov_mode(sp->sa_mode);
2440 }
2441 *(pathcp + len2) = '\0';
fad57d0e 2442 if (vp) {
984263bc
MD
2443 error = EEXIST;
2444 goto out;
2445 }
2446
984263bc
MD
2447 if (vap->va_mode == (mode_t)VNOVAL)
2448 vap->va_mode = 0;
fad57d0e
MD
2449 error = VOP_NSYMLINK(nd.nl_ncp, &vp, nd.nl_cred, vap, pathcp);
2450 if (error == 0) {
2451 bzero((caddr_t)fhp, sizeof(nfh));
2452 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
2453 error = VFS_VPTOFH(vp, &fhp->fh_fid);
2454 if (!error)
87de5057 2455 error = VOP_GETATTR(vp, vap);
fad57d0e
MD
2456 }
2457
2458#if 0
984263bc 2459 /*
fad57d0e
MD
2460 * We have a vp in hand from the new API call, we do not have to
2461 * look it up again.
984263bc 2462 */
984263bc
MD
2463 if (error == 0) {
2464 if (v3) {
2465 /*
2466 * Issue lookup. Leave SAVESTART set so we can easily free
2467 * the name buffer later on.
2468 *
2469 * since LOCKPARENT is not set, ni_dvp will be garbage on
2470 * return whether an error occurs or not.
2471 */
2b69e610
MD
2472 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
2473 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT | CNP_FOLLOW);
dadab5e9 2474 nd.ni_cnd.cn_td = td;
984263bc
MD
2475 nd.ni_cnd.cn_cred = cred;
2476
2477 error = lookup(&nd);
2478 nd.ni_dvp = NULL;
2479
2480 if (error == 0) {
2481 bzero((caddr_t)fhp, sizeof(nfh));
2482 fhp->fh_fsid = nd.ni_vp->v_mount->mnt_stat.f_fsid;
2483 error = VFS_VPTOFH(nd.ni_vp, &fhp->fh_fid);
2484 if (!error)
87de5057 2485 error = VOP_GETATTR(nd.ni_vp, vap);
984263bc
MD
2486 vput(nd.ni_vp);
2487 nd.ni_vp = NULL;
2488 }
2489 }
2490 }
fad57d0e 2491#endif
984263bc 2492out:
fad57d0e
MD
2493 if (vp) {
2494 vput(vp);
2495 vp = NULL;
2496 }
984263bc
MD
2497 if (pathcp) {
2498 FREE(pathcp, M_TEMP);
2499 pathcp = NULL;
2500 }
2501 if (dirp) {
87de5057 2502 diraft_ret = VOP_GETATTR(dirp, &diraft);
984263bc
MD
2503 vrele(dirp);
2504 dirp = NULL;
2505 }
984263bc
MD
2506 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2507 if (v3) {
2508 if (!error) {
2509 nfsm_srvpostop_fh(fhp);
2510 nfsm_srvpostop_attr(0, vap);
2511 }
2512 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2513 }
2514 error = 0;
2515 /* fall through */
2516
2517nfsmout:
fad57d0e
MD
2518 nlookup_done(&nd);
2519 if (vp)
2520 vput(vp);
984263bc
MD
2521 if (dirp)
2522 vrele(dirp);
2523 if (pathcp)
2524 FREE(pathcp, M_TEMP);
984263bc
MD
2525 return (error);
2526}
2527
2528/*
2529 * nfs mkdir service
2530 */
2531int
e851b29e
CP
2532nfsrv_mkdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2533 struct thread *td, struct mbuf **mrq)
984263bc
MD
2534{
2535 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2536 struct sockaddr *nam = nfsd->nd_nam;
2537 caddr_t dpos = nfsd->nd_dpos;
2538 struct ucred *cred = &nfsd->nd_cr;
2539 struct vattr va, dirfor, diraft;
dadab5e9
MD
2540 struct vattr *vap = &va;
2541 struct nfs_fattr *fp;
fad57d0e 2542 struct nlookupdata nd;
dadab5e9
MD
2543 caddr_t cp;
2544 u_int32_t *tl;
2545 int32_t t1;
984263bc 2546 caddr_t bpos;
e07fef60 2547 int error = 0, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2548 int v3 = (nfsd->nd_flag & ND_NFSV3);
2549 char *cp2;
2550 struct mbuf *mb, *mb2, *mreq;
fad57d0e
MD
2551 struct vnode *dirp;
2552 struct vnode *vp;
984263bc
MD
2553 nfsfh_t nfh;
2554 fhandle_t *fhp;
984263bc
MD
2555
2556 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2557 nlookup_zero(&nd);
2558 dirp = NULL;
2559 vp = NULL;
984263bc
MD
2560
2561 fhp = &nfh.fh_generic;
2562 nfsm_srvmtofh(fhp);
2563 nfsm_srvnamesiz(len);
984263bc 2564
fad57d0e
MD
2565 error = nfs_namei(&nd, cred, NAMEI_CREATE, NULL, &vp,
2566 fhp, len, slp, nam, &md, &dpos, &dirp,
2567 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2568 if (dirp) {
fad57d0e 2569 if (v3)
87de5057 2570 dirfor_ret = VOP_GETATTR(dirp, &dirfor);
984263bc
MD
2571 }
2572 if (error) {
2573 nfsm_reply(NFSX_WCCDATA(v3));
2574 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2575 error = 0;
2576 goto nfsmout;
2577 }
2578 VATTR_NULL(vap);
2579 if (v3) {
2580 nfsm_srvsattr(vap);
2581 } else {
2582 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
2583 vap->va_mode = nfstov_mode(*tl++);
2584 }
2585
2586 /*
2587 * At this point nd.ni_dvp is referenced and exclusively locked and
2588 * nd.ni_vp, if it exists, is referenced but not locked.
2589 */
2590
2591 vap->va_type = VDIR;
fad57d0e 2592 if (vp != NULL) {
984263bc
MD
2593 error = EEXIST;
2594 goto out;
2595 }
2596
2597 /*
2598 * Issue mkdir op. Since SAVESTART is not set, the pathname
2599 * component is freed by the VOP call. This will fill-in
2600 * nd.ni_vp, reference, and exclusively lock it.
2601 */
2602 if (vap->va_mode == (mode_t)VNOVAL)
2603 vap->va_mode = 0;
fad57d0e 2604 error = VOP_NMKDIR(nd.nl_ncp, &vp, nd.nl_cred, vap);
984263bc 2605
fad57d0e 2606 if (error == 0) {
984263bc 2607 bzero((caddr_t)fhp, sizeof(nfh));
fad57d0e
MD
2608 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
2609 error = VFS_VPTOFH(vp, &fhp->fh_fid);
2610 if (error == 0)
87de5057 2611 error = VOP_GETATTR(vp, vap);
984263bc
MD
2612 }
2613out:
2614 if (dirp)
87de5057 2615 diraft_ret = VOP_GETATTR(dirp, &diraft);
984263bc
MD
2616 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2617 if (v3) {
2618 if (!error) {
2619 nfsm_srvpostop_fh(fhp);
2620 nfsm_srvpostop_attr(0, vap);
2621 }
2622 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2623 } else {
2624 nfsm_srvfhtom(fhp, v3);
2625 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
2626 nfsm_srvfillattr(vap, fp);
2627 }
2628 error = 0;
2629 /* fall through */
2630
2631nfsmout:
fad57d0e 2632 nlookup_done(&nd);
984263bc
MD
2633 if (dirp)
2634 vrele(dirp);
fad57d0e
MD
2635 if (vp)
2636 vput(vp);
984263bc
MD
2637 return (error);
2638}
2639
2640/*
2641 * nfs rmdir service
2642 */
2643int
e851b29e
CP
2644nfsrv_rmdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2645 struct thread *td, struct mbuf **mrq)
984263bc
MD
2646{
2647 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2648 struct sockaddr *nam = nfsd->nd_nam;
2649 caddr_t dpos = nfsd->nd_dpos;
2650 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2651 u_int32_t *tl;
2652 int32_t t1;
984263bc 2653 caddr_t bpos;
e07fef60 2654 int error = 0, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2655 int v3 = (nfsd->nd_flag & ND_NFSV3);
2656 char *cp2;
2657 struct mbuf *mb, *mreq;
fad57d0e
MD
2658 struct vnode *dirp;
2659 struct vnode *vp;
984263bc
MD
2660 struct vattr dirfor, diraft;
2661 nfsfh_t nfh;
2662 fhandle_t *fhp;
fad57d0e 2663 struct nlookupdata nd;
984263bc
MD
2664
2665 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2666 nlookup_zero(&nd);
2667 dirp = NULL;
2668 vp = NULL;
984263bc
MD
2669
2670 fhp = &nfh.fh_generic;
2671 nfsm_srvmtofh(fhp);
2672 nfsm_srvnamesiz(len);
fad57d0e
MD
2673
2674 error = nfs_namei(&nd, cred, NAMEI_DELETE, NULL, &vp,
2675 fhp, len, slp, nam, &md, &dpos, &dirp,
2676 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2677 if (dirp) {
fad57d0e 2678 if (v3)
87de5057 2679 dirfor_ret = VOP_GETATTR(dirp, &dirfor);
984263bc
MD
2680 }
2681 if (error) {
2682 nfsm_reply(NFSX_WCCDATA(v3));
2683 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2684 error = 0;
2685 goto nfsmout;
2686 }
984263bc
MD
2687 if (vp->v_type != VDIR) {
2688 error = ENOTDIR;
2689 goto out;
2690 }
fad57d0e 2691
984263bc
MD
2692 /*
2693 * The root of a mounted filesystem cannot be deleted.
2694 */
2695 if (vp->v_flag & VROOT)
2696 error = EBUSY;
2697out:
2698 /*
2699 * Issue or abort op. Since SAVESTART is not set, path name
2700 * component is freed by the VOP after either.
2701 */
2702 if (!error) {
fad57d0e
MD
2703 vput(vp);
2704 vp = NULL;
2705 error = VOP_NRMDIR(nd.nl_ncp, nd.nl_cred);
984263bc 2706 }
fad57d0e 2707 nlookup_done(&nd);
984263bc
MD
2708
2709 if (dirp)
87de5057 2710 diraft_ret = VOP_GETATTR(dirp, &diraft);
984263bc
MD
2711 nfsm_reply(NFSX_WCCDATA(v3));
2712 if (v3) {
2713 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2714 error = 0;
2715 }
2716 /* fall through */
2717
2718nfsmout:
fad57d0e 2719 nlookup_done(&nd);
984263bc
MD
2720 if (dirp)
2721 vrele(dirp);
fad57d0e
MD
2722 if (vp)
2723 vput(vp);
984263bc
MD
2724 return(error);
2725}
2726
2727/*
2728 * nfs readdir service
2729 * - mallocs what it thinks is enough to read
2730 * count rounded up to a multiple of NFS_DIRBLKSIZ <= NFS_MAXREADDIR
2731 * - calls VOP_READDIR()
2732 * - loops around building the reply
2733 * if the output generated exceeds count break out of loop
2734 * The nfsm_clget macro is used here so that the reply will be packed
2735 * tightly in mbuf clusters.
2736 * - it only knows that it has encountered eof when the VOP_READDIR()
2737 * reads nothing
2738 * - as such one readdir rpc will return eof false although you are there
2739 * and then the next will return eof
2740 * - it trims out records with d_fileno == 0
2741 * this doesn't matter for Unix clients, but they might confuse clients
2742 * for other os'.
2743 * NB: It is tempting to set eof to true if the VOP_READDIR() reads less
2744 * than requested, but this may not apply to all filesystems. For
2745 * example, client NFS does not { although it is never remote mounted
2746 * anyhow }
2747 * The alternate call nfsrv_readdirplus() does lookups as well.
2748 * PS: The NFS protocol spec. does not clarify what the "count" byte
2749 * argument is a count of.. just name strings and file id's or the
2750 * entire reply rpc or ...
2751 * I tried just file name and id sizes and it confused the Sun client,
2752 * so I am using the full rpc size now. The "paranoia.." comment refers
2753 * to including the status longwords that are not a part of the dir.
2754 * "entry" structures, but are in the rpc.
2755 */
2756struct flrep {
2757 nfsuint64 fl_off;
2758 u_int32_t fl_postopok;
2759 u_int32_t fl_fattr[NFSX_V3FATTR / sizeof (u_int32_t)];
2760 u_int32_t fl_fhok;
2761 u_int32_t fl_fhsize;
2762 u_int32_t fl_nfh[NFSX_V3FH / sizeof (u_int32_t)];
2763};
2764
2765int
e851b29e
CP
2766nfsrv_readdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2767 struct thread *td, struct mbuf **mrq)
984263bc
MD
2768{
2769 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2770 struct sockaddr *nam = nfsd->nd_nam;
2771 caddr_t dpos = nfsd->nd_dpos;
2772 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2773 char *bp, *be;
2774 struct mbuf *mp;
2775 struct dirent *dp;
2776 caddr_t cp;
2777 u_int32_t *tl;
2778 int32_t t1;
984263bc
MD
2779 caddr_t bpos;
2780 struct mbuf *mb, *mb2, *mreq, *mp2;
2781 char *cpos, *cend, *cp2, *rbuf;
2782 struct vnode *vp = NULL;
2783 struct vattr at;
2784 nfsfh_t nfh;
2785 fhandle_t *fhp;
2786 struct uio io;
2787 struct iovec iv;
2788 int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
e07fef60 2789 int siz, cnt, fullsiz, eofflag, rdonly, ncookies;
984263bc 2790 int v3 = (nfsd->nd_flag & ND_NFSV3);
e07fef60 2791 u_quad_t off, toff, verf;
984263bc
MD
2792 u_long *cookies = NULL, *cookiep; /* needs to be int64_t or off_t */
2793
2794 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2795 fhp = &nfh.fh_generic;
2796 nfsm_srvmtofh(fhp);
2797 if (v3) {
2798 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2799 toff = fxdr_hyper(tl);
2800 tl += 2;
2801 verf = fxdr_hyper(tl);
2802 tl += 2;
2803 } else {
2804 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2805 toff = fxdr_unsigned(u_quad_t, *tl++);
2806 verf = 0; /* shut up gcc */
2807 }
2808 off = toff;
2809 cnt = fxdr_unsigned(int, *tl);
2810 siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
2811 xfer = NFS_SRVMAXDATA(nfsd);
2812 if (cnt > xfer)
2813 cnt = xfer;
2814 if (siz > xfer)
2815 siz = xfer;
2816 fullsiz = siz;
2817 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
2818 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
2819 if (!error && vp->v_type != VDIR) {
2820 error = ENOTDIR;
2821 vput(vp);
2822 vp = NULL;
2823 }
2824 if (error) {
2825 nfsm_reply(NFSX_UNSIGNED);
2826 nfsm_srvpostop_attr(getret, &at);
2827 error = 0;
2828 goto nfsmout;
2829 }
2830
2831 /*
2832 * Obtain lock on vnode for this section of the code
2833 */
2834
984263bc 2835 if (v3) {
87de5057 2836 error = getret = VOP_GETATTR(vp, &at);
984263bc
MD
2837#if 0
2838 /*
2839 * XXX This check may be too strict for Solaris 2.5 clients.
2840 */
2841 if (!error && toff && verf && verf != at.va_filerev)
2842 error = NFSERR_BAD_COOKIE;
2843#endif
2844 }
2845 if (!error)
dadab5e9 2846 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 0);
984263bc
MD
2847 if (error) {
2848 vput(vp);
2849 vp = NULL;
2850 nfsm_reply(NFSX_POSTOPATTR(v3));
2851 nfsm_srvpostop_attr(getret, &at);
2852 error = 0;
2853 goto nfsmout;
2854 }
ca466bae 2855 VOP_UNLOCK(vp, 0);
984263bc
MD
2856
2857 /*
2858 * end section. Allocate rbuf and continue
2859 */
2860 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
2861again:
2862 iv.iov_base = rbuf;
2863 iv.iov_len = fullsiz;
2864 io.uio_iov = &iv;
2865 io.uio_iovcnt = 1;
2866 io.uio_offset = (off_t)off;
2867 io.uio_resid = fullsiz;
2868 io.uio_segflg = UIO_SYSSPACE;
2869 io.uio_rw = UIO_READ;
dadab5e9 2870 io.uio_td = NULL;
984263bc 2871 eofflag = 0;
ca466bae 2872 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
984263bc
MD
2873 if (cookies) {
2874 free((caddr_t)cookies, M_TEMP);
2875 cookies = NULL;
2876 }
2877 error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
2878 off = (off_t)io.uio_offset;
2879 if (!cookies && !error)
2880 error = NFSERR_PERM;
2881 if (v3) {
87de5057 2882 getret = VOP_GETATTR(vp, &at);
984263bc
MD
2883 if (!error)
2884 error = getret;
2885 }
ca466bae 2886 VOP_UNLOCK(vp, 0);
984263bc
MD
2887 if (error) {
2888 vrele(vp);
2889 vp = NULL;
2890 free((caddr_t)rbuf, M_TEMP);
2891 if (cookies)
2892 free((caddr_t)cookies, M_TEMP);
2893 nfsm_reply(NFSX_POSTOPATTR(v3));
2894 nfsm_srvpostop_attr(getret, &at);
2895 error = 0;
2896 goto nfsmout;
2897 }
2898 if (io.uio_resid) {
2899 siz -= io.uio_resid;
2900
2901 /*
2902 * If nothing read, return eof
2903 * rpc reply
2904 */
2905 if (siz == 0) {
2906 vrele(vp);
2907 vp = NULL;
2908 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) +
2909 2 * NFSX_UNSIGNED);
2910 if (v3) {
2911 nfsm_srvpostop_attr(getret, &at);
2912 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2913 txdr_hyper(at.va_filerev, tl);
2914 tl += 2;
2915 } else
2916 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2917 *tl++ = nfs_false;
2918 *tl = nfs_true;
2919 FREE((caddr_t)rbuf, M_TEMP);
2920 FREE((caddr_t)cookies, M_TEMP);
2921 error = 0;
2922 goto nfsmout;
2923 }
2924 }
2925
2926 /*
2927 * Check for degenerate cases of nothing useful read.
2928 * If so go try again
2929 */
2930 cpos = rbuf;
2931 cend = rbuf + siz;
2932 dp = (struct dirent *)cpos;
2933 cookiep = cookies;
2934 /*
2935 * For some reason FreeBSD's ufs_readdir() chooses to back the
2936 * directory offset up to a block boundary, so it is necessary to
2937 * skip over the records that preceed the requested offset. This
2938 * requires the assumption that file offset cookies monotonically
2939 * increase.
2940 */
2941 while (cpos < cend && ncookies > 0 &&
01f31ab3 2942 (dp->d_ino == 0 || dp->d_type == DT_WHT ||
984263bc 2943 ((u_quad_t)(*cookiep)) <= toff)) {
01f31ab3
JS
2944 dp = _DIRENT_NEXT(dp);
2945 cpos = (char *)dp;
984263bc
MD
2946 cookiep++;
2947 ncookies--;
2948 }
2949 if (cpos >= cend || ncookies == 0) {
2950 toff = off;
2951 siz = fullsiz;
2952 goto again;
2953 }
2954
2955 len = 3 * NFSX_UNSIGNED; /* paranoia, probably can be 0 */
2956 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) + siz);
2957 if (v3) {
2958 nfsm_srvpostop_attr(getret, &at);
2959 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2960 txdr_hyper(at.va_filerev, tl);
2961 }
2962 mp = mp2 = mb;
2963 bp = bpos;
2964 be = bp + M_TRAILINGSPACE(mp);
2965
2966 /* Loop through the records and build reply */
2967 while (cpos < cend && ncookies > 0) {
01f31ab3 2968 if (dp->d_ino != 0 && dp->d_type != DT_WHT) {
984263bc
MD
2969 nlen = dp->d_namlen;
2970 rem = nfsm_rndup(nlen) - nlen;
2971 len += (4 * NFSX_UNSIGNED + nlen + rem);
2972 if (v3)
2973 len += 2 * NFSX_UNSIGNED;
2974 if (len > cnt) {
2975 eofflag = 0;
2976 break;
2977 }
2978 /*
2979 * Build the directory record xdr from
2980 * the dirent entry.
2981 */
2982 nfsm_clget;
2983 *tl = nfs_true;
2984 bp += NFSX_UNSIGNED;
2985 if (v3) {
2986 nfsm_clget;
2987 *tl = 0;
2988 bp += NFSX_UNSIGNED;
2989 }
2990 nfsm_clget;
01f31ab3 2991 *tl = txdr_unsigned(dp->d_ino);
984263bc
MD
2992 bp += NFSX_UNSIGNED;
2993 nfsm_clget;
2994 *tl = txdr_unsigned(nlen);
2995 bp += NFSX_UNSIGNED;
2996
2997 /* And loop around copying the name */
2998 xfer = nlen;
2999 cp = dp->d_name;
3000 while (xfer > 0) {
3001 nfsm_clget;
3002 if ((bp+xfer) > be)
3003 tsiz = be-bp;
3004 else
3005 tsiz = xfer;
3006 bcopy(cp, bp, tsiz);
3007 bp += tsiz;
3008 xfer -= tsiz;
3009 if (xfer > 0)
3010 cp += tsiz;
3011 }
3012 /* And null pad to a int32_t boundary */
3013 for (i = 0; i < rem; i++)
3014 *bp++ = '\0';
3015 nfsm_clget;
3016
3017 /* Finish off the record */
3018 if (v3) {
3019 *tl = 0;
3020 bp += NFSX_UNSIGNED;
3021 nfsm_clget;
3022 }
3023 *tl = txdr_unsigned(*cookiep);
3024 bp += NFSX_UNSIGNED;
3025 }
01f31ab3
JS
3026 dp = _DIRENT_NEXT(dp);
3027 cpos = (char *)dp;
984263bc
MD
3028 cookiep++;
3029 ncookies--;
3030 }
3031 vrele(vp);
3032 vp = NULL;
3033 nfsm_clget;
3034 *tl = nfs_false;
3035 bp += NFSX_UNSIGNED;
3036 nfsm_clget;
3037 if (eofflag)
3038 *tl = nfs_true;
3039 else
3040 *tl = nfs_false;
3041 bp += NFSX_UNSIGNED;
3042 if (mp != mb) {
3043 if (bp < be)
3044 mp->m_len = bp - mtod(mp, caddr_t);
3045 } else
3046 mp->m_len += bp - bpos;
3047 FREE((caddr_t)rbuf, M_TEMP);
3048 FREE((caddr_t)cookies, M_TEMP);
3049
3050nfsmout:
3051 if (vp)
3052 vrele(vp);
3053 return(error);
3054}
3055
3056int
e851b29e
CP
3057nfsrv_readdirplus(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3058 struct thread *td, struct mbuf **mrq)
984263bc
MD
3059{
3060 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3061 struct sockaddr *nam = nfsd->nd_nam;
3062 caddr_t dpos = nfsd->nd_dpos;
3063 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3064 char *bp, *be;
3065 struct mbuf *mp;
3066 struct dirent *dp;
3067 caddr_t cp;
3068 u_int32_t *tl;
3069 int32_t t1;
984263bc
MD
3070 caddr_t bpos;
3071 struct mbuf *mb, *mb2, *mreq, *mp2;
3072 char *cpos, *cend, *cp2, *rbuf;
3073 struct vnode *vp = NULL, *nvp;
3074 struct flrep fl;
3075 nfsfh_t nfh;
3076 fhandle_t *fhp, *nfhp = (fhandle_t *)fl.fl_nfh;
3077 struct uio io;
3078 struct iovec iv;
3079 struct vattr va, at, *vap = &va;
3080 struct nfs_fattr *fp;
3081 int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
e07fef60
MD
3082 int siz, cnt, fullsiz, eofflag, rdonly, dirlen, ncookies;
3083 u_quad_t off, toff, verf;
984263bc
MD
3084 u_long *cookies = NULL, *cookiep; /* needs to be int64_t or off_t */
3085
3086 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
3087 fhp = &nfh.fh_generic;
3088 nfsm_srvmtofh(fhp);
3089 nfsm_dissect(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
3090 toff = fxdr_hyper(tl);
3091 tl += 2;
3092 verf = fxdr_hyper(tl);
3093 tl += 2;
3094 siz = fxdr_unsigned(int, *tl++);
3095 cnt = fxdr_unsigned(int, *tl);
3096 off = toff;
3097 siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
3098 xfer = NFS_SRVMAXDATA(nfsd);
3099 if (cnt > xfer)
3100 cnt = xfer;
3101 if (siz > xfer)
3102 siz = xfer;
3103 fullsiz = siz;
3104 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3105 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3106 if (!error && vp->v_type != VDIR) {
3107 error = ENOTDIR;
3108 vput(vp);
3109 vp = NULL;
3110 }
3111 if (error) {
3112 nfsm_reply(NFSX_UNSIGNED);
3113 nfsm_srvpostop_attr(getret, &at);
3114 error = 0;
3115 goto nfsmout;
3116 }
87de5057 3117 error = getret = VOP_GETATTR(vp, &at);
984263bc
MD
3118#if 0
3119 /*
3120 * XXX This check may be too strict for Solaris 2.5 clients.
3121 */
3122 if (!error && toff && verf && verf != at.va_filerev)
3123 error = NFSERR_BAD_COOKIE;
3124#endif
3125 if (!error) {
dadab5e9 3126 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 0);
984263bc
MD
3127 }
3128 if (error) {
3129 vput(vp);
3130 vp = NULL;
3131 nfsm_reply(NFSX_V3POSTOPATTR);
3132 nfsm_srvpostop_attr(getret, &at);
3133 error = 0;
3134 goto nfsmout;
3135 }
ca466bae 3136 VOP_UNLOCK(vp, 0);
984263bc
MD
3137 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
3138again:
3139 iv.iov_base = rbuf;
3140 iv.iov_len = fullsiz;
3141 io.uio_iov = &iv;
3142 io.uio_iovcnt = 1;
3143 io.uio_offset = (off_t)off;
3144 io.uio_resid = fullsiz;
3145 io.uio_segflg = UIO_SYSSPACE;
3146 io.uio_rw = UIO_READ;
dadab5e9 3147 io.uio_td = NULL;
984263bc 3148 eofflag = 0;
ca466bae 3149 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
984263bc
MD
3150 if (cookies) {
3151 free((caddr_t)cookies, M_TEMP);
3152 cookies = NULL;
3153 }
3154 error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
3155 off = (u_quad_t)io.uio_offset;
87de5057 3156 getret = VOP_GETATTR(vp, &at);
ca466bae 3157 VOP_UNLOCK(vp, 0);
984263bc
MD
3158 if (!cookies && !error)
3159 error = NFSERR_PERM;
3160 if (!error)
3161 error = getret;
3162 if (error) {
3163 vrele(vp);
3164 vp = NULL;
3165 if (cookies)
3166 free((caddr_t)cookies, M_TEMP);
3167 free((caddr_t)rbuf, M_TEMP);
3168 nfsm_reply(NFSX_V3POSTOPATTR);
3169 nfsm_srvpostop_attr(getret, &at);
3170 error = 0;
3171 goto nfsmout;
3172 }
3173 if (io.uio_resid) {
3174 siz -= io.uio_resid;
3175
3176 /*
3177 * If nothing read, return eof
3178 * rpc reply
3179 */
3180 if (siz == 0) {
3181 vrele(vp);
3182 vp = NULL;
3183 nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF +
3184 2 * NFSX_UNSIGNED);
3185 nfsm_srvpostop_attr(getret, &at);
3186 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
3187 txdr_hyper(at.va_filerev, tl);
3188 tl += 2;
3189 *tl++ = nfs_false;
3190 *tl = nfs_true;
3191 FREE((caddr_t)cookies, M_TEMP);
3192 FREE((caddr_t)rbuf, M_TEMP);
3193 error = 0;
3194 goto nfsmout;
3195 }
3196 }
3197
3198 /*
3199 * Check for degenerate cases of nothing useful read.
3200 * If so go try again
3201 */
3202 cpos = rbuf;
3203 cend = rbuf + siz;
3204 dp = (struct dirent *)cpos;
3205 cookiep = cookies;
3206 /*
3207 * For some reason FreeBSD's ufs_readdir() chooses to back the
3208 * directory offset up to a block boundary, so it is necessary to
3209 * skip over the records that preceed the requested offset. This
3210 * requires the assumption that file offset cookies monotonically
3211 * increase.
3212 */
3213 while (cpos < cend && ncookies > 0 &&
01f31ab3 3214 (dp->d_ino == 0 || dp->d_type == DT_WHT ||
984263bc 3215 ((u_quad_t)(*cookiep)) <= toff)) {
01f31ab3
JS
3216 dp = _DIRENT_NEXT(dp);
3217 cpos = (char *)dp;
984263bc
MD
3218 cookiep++;
3219 ncookies--;
3220 }
3221 if (cpos >= cend || ncookies == 0) {
3222 toff = off;
3223 siz = fullsiz;
3224 goto again;
3225 }
3226
3227 /*
3228 * Probe one of the directory entries to see if the filesystem
3229 * supports VGET.
3230 */
01f31ab3 3231 if (VFS_VGET(vp->v_mount, dp->d_ino, &nvp) == EOPNOTSUPP) {
984263bc
MD
3232 error = NFSERR_NOTSUPP;
3233 vrele(vp);
3234 vp = NULL;
3235 free((caddr_t)cookies, M_TEMP);
3236 free((caddr_t)rbuf, M_TEMP);
3237 nfsm_reply(NFSX_V3POSTOPATTR);
3238 nfsm_srvpostop_attr(getret, &at);
3239 error = 0;
3240 goto nfsmout;
3241 }
3187253f
MD
3242 if (nvp) {
3243 vput(nvp);
3244 nvp = NULL;
3245 }
984263bc
MD
3246
3247 dirlen = len = NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF + 2 * NFSX_UNSIGNED;
3248 nfsm_reply(cnt);
3249 nfsm_srvpostop_attr(getret, &at);
3250 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3251 txdr_hyper(at.va_filerev, tl);
3252 mp = mp2 = mb;
3253 bp = bpos;
3254 be = bp + M_TRAILINGSPACE(mp);
3255
3256 /* Loop through the records and build reply */
3257 while (cpos < cend && ncookies > 0) {
01f31ab3 3258 if (dp->d_ino != 0 && dp->d_type != DT_WHT) {
984263bc
MD
3259 nlen = dp->d_namlen;
3260 rem = nfsm_rndup(nlen)-nlen;
3261
3262 /*
3263 * For readdir_and_lookup get the vnode using
3264 * the file number.
3265 */
01f31ab3 3266 if (VFS_VGET(vp->v_mount, dp->d_ino, &nvp))
984263bc
MD
3267 goto invalid;
3268 bzero((caddr_t)nfhp, NFSX_V3FH);
3269 nfhp->fh_fsid =
3270 nvp->v_mount->mnt_stat.f_fsid;
3271 if (VFS_VPTOFH(nvp, &nfhp->fh_fid)) {
3272 vput(nvp);
3273 nvp = NULL;
3274 goto invalid;
3275 }
87de5057 3276 if (VOP_GETATTR(nvp, vap)) {
984263bc
MD
3277 vput(nvp);
3278 nvp = NULL;
3279 goto invalid;
3280 }
3281 vput(nvp);
3282 nvp = NULL;
3283
3284 /*
3285 * If either the dircount or maxcount will be
3286 * exceeded, get out now. Both of these lengths
3287 * are calculated conservatively, including all
3288 * XDR overheads.
3289 */
3290 len += (8 * NFSX_UNSIGNED + nlen + rem + NFSX_V3FH +
3291 NFSX_V3POSTOPATTR);
3292 dirlen += (6 * NFSX_UNSIGNED + nlen + rem);
3293 if (len > cnt || dirlen > fullsiz) {
3294 eofflag = 0;
3295 break;
3296 }
3297
3298 /*
3299 * Build the directory record xdr from
3300 * the dirent entry.
3301 */
3302 fp = (struct nfs_fattr *)&fl.fl_fattr;
3303 nfsm_srvfillattr(vap, fp);
3304 fl.fl_fhsize = txdr_unsigned(NFSX_V3FH);
3305 fl.fl_fhok = nfs_true;
3306 fl.fl_postopok = nfs_true;
3307 fl.fl_off.nfsuquad[0] = 0;
3308 fl.fl_off.nfsuquad[1] = txdr_unsigned(*cookiep);
3309
3310 nfsm_clget;
3311 *tl = nfs_true;
3312 bp += NFSX_UNSIGNED;
3313 nfsm_clget;
3314 *tl = 0;
3315 bp += NFSX_UNSIGNED;
3316 nfsm_clget;
01f31ab3 3317 *tl = txdr_unsigned(dp->d_ino);
984263bc
MD
3318 bp += NFSX_UNSIGNED;
3319 nfsm_clget;
3320 *tl = txdr_unsigned(nlen);
3321 bp += NFSX_UNSIGNED;
3322
3323 /* And loop around copying the name */
3324 xfer = nlen;
3325 cp = dp->d_name;
3326 while (xfer > 0) {
3327 nfsm_clget;
3328 if ((bp + xfer) > be)
3329 tsiz = be - bp;
3330 else
3331 tsiz = xfer;
3332 bcopy(cp, bp, tsiz);
3333 bp += tsiz;
3334 xfer -= tsiz;
3335 if (xfer > 0)
3336 cp += tsiz;
3337 }
3338 /* And null pad to a int32_t boundary */
3339 for (i = 0; i < rem; i++)
3340 *bp++ = '\0';
3341
3342 /*
3343 * Now copy the flrep structure out.
3344 */
3345 xfer = sizeof (struct flrep);
3346 cp = (caddr_t)&fl;
3347 while (xfer > 0) {
3348 nfsm_clget;
3349 if ((bp + xfer) > be)
3350 tsiz = be - bp;
3351 else
3352 tsiz = xfer;
3353 bcopy(cp, bp, tsiz);
3354 bp += tsiz;
3355 xfer -= tsiz;
3356 if (xfer > 0)
3357 cp += tsiz;
3358 }
3359 }
3360invalid:
01f31ab3
JS
3361 dp = _DIRENT_NEXT(dp);
3362 cpos = (char *)dp;
984263bc
MD
3363 cookiep++;
3364 ncookies--;
3365 }
3366 vrele(vp);
3367 vp = NULL;
3368 nfsm_clget;
3369 *tl = nfs_false;
3370 bp += NFSX_UNSIGNED;
3371 nfsm_clget;
3372 if (eofflag)
3373 *tl = nfs_true;
3374 else
3375 *tl = nfs_false;
3376 bp += NFSX_UNSIGNED;
3377 if (mp != mb) {
3378 if (bp < be)
3379 mp->m_len = bp - mtod(mp, caddr_t);
3380 } else
3381 mp->m_len += bp - bpos;
3382 FREE((caddr_t)cookies, M_TEMP);
3383 FREE((caddr_t)rbuf, M_TEMP);
3384nfsmout:
3385 if (vp)
3386 vrele(vp);
3387 return(error);
3388}
3389
3390/*
3391 * nfs commit service
3392 */
3393int
e851b29e
CP
3394nfsrv_commit(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3395 struct thread *td, struct mbuf **mrq)
984263bc
MD
3396{
3397 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3398 struct sockaddr *nam = nfsd->nd_nam;
3399 caddr_t dpos = nfsd->nd_dpos;
3400 struct ucred *cred = &nfsd->nd_cr;
3401 struct vattr bfor, aft;
3402 struct vnode *vp = NULL;
3403 nfsfh_t nfh;
3404 fhandle_t *fhp;
dadab5e9
MD
3405 u_int32_t *tl;
3406 int32_t t1;
984263bc 3407 caddr_t bpos;
e07fef60 3408 int error = 0, rdonly, for_ret = 1, aft_ret = 1, cnt;
984263bc
MD
3409 char *cp2;
3410 struct mbuf *mb, *mb2, *mreq;
e07fef60 3411 u_quad_t off;
984263bc
MD
3412
3413 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
984263bc
MD
3414 fhp = &nfh.fh_generic;
3415 nfsm_srvmtofh(fhp);
3416 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3417
3418 /*
3419 * XXX At this time VOP_FSYNC() does not accept offset and byte
3420 * count parameters, so these arguments are useless (someday maybe).
3421 */
3422 off = fxdr_hyper(tl);
3423 tl += 2;
3424 cnt = fxdr_unsigned(int, *tl);
3425 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3426 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3427 if (error) {
3428 nfsm_reply(2 * NFSX_UNSIGNED);
3429 nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
3430 error = 0;
3431 goto nfsmout;
3432 }
87de5057 3433 for_ret = VOP_GETATTR(vp, &bfor);
984263bc
MD
3434
3435 if (cnt > MAX_COMMIT_COUNT) {
3436 /*
3437 * Give up and do the whole thing
3438 */
3439 if (vp->v_object &&
3440 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
3441 vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC);
3442 }
87de5057 3443 error = VOP_FSYNC(vp, MNT_WAIT);
984263bc
MD
3444 } else {
3445 /*
3446 * Locate and synchronously write any buffers that fall
3447 * into the requested range. Note: we are assuming that
3448 * f_iosize is a power of 2.
3449 */
3450 int iosize = vp->v_mount->mnt_stat.f_iosize;
3451 int iomask = iosize - 1;
54078292 3452 off_t loffset;
984263bc
MD
3453
3454 /*
3455 * Align to iosize boundry, super-align to page boundry.
3456 */
3457 if (off & iomask) {
3458 cnt += off & iomask;
3459 off &= ~(u_quad_t)iomask;
3460 }
3461 if (off & PAGE_MASK) {
3462 cnt += off & PAGE_MASK;
3463 off &= ~(u_quad_t)PAGE_MASK;
3464 }
54078292 3465 loffset = off;
984263bc
MD
3466
3467 if (vp->v_object &&
3468 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
3469 vm_object_page_clean(vp->v_object, off / PAGE_SIZE, (cnt + PAGE_MASK) / PAGE_SIZE, OBJPC_SYNC);
3470 }
3471
165dba55 3472 crit_enter();
984263bc
MD
3473 while (cnt > 0) {
3474 struct buf *bp;
3475
3476 /*
3477 * If we have a buffer and it is marked B_DELWRI we
3478 * have to lock and write it. Otherwise the prior
3479 * write is assumed to have already been committed.
3480 */
54078292 3481 if ((bp = findblk(vp, loffset)) != NULL && (bp->b_flags & B_DELWRI)) {
984263bc 3482 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT)) {
1f1ea522
MD
3483 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL) == 0)
3484 BUF_UNLOCK(bp);
984263bc
MD
3485 continue; /* retry */
3486 }
3487 bremfree(bp);
3488 bp->b_flags &= ~B_ASYNC;
62cfda27 3489 bwrite(bp);
984263bc
MD
3490 ++nfs_commit_miss;
3491 }
3492 ++nfs_commit_blks;
3493 if (cnt < iosize)
3494 break;
3495 cnt -= iosize;
54078292 3496 loffset += iosize;
984263bc 3497 }
165dba55 3498 crit_exit();
984263bc
MD
3499 }
3500
87de5057 3501 aft_ret = VOP_GETATTR(vp, &aft);
984263bc
MD
3502 vput(vp);
3503 vp = NULL;
3504 nfsm_reply(NFSX_V3WCCDATA + NFSX_V3WRITEVERF);
3505 nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
3506 if (!error) {
3507 nfsm_build(tl, u_int32_t *, NFSX_V3WRITEVERF);
3508 if (nfsver.tv_sec == 0)
3509 nfsver = boottime;
3510 *tl++ = txdr_unsigned(nfsver.tv_sec);
3a6f9faf 3511 *tl = txdr_unsigned(nfsver.tv_nsec / 1000);
984263bc
MD
3512 } else {
3513 error = 0;
3514 }
3515nfsmout:
3516 if (vp)
3517 vput(vp);
3518 return(error);
3519}
3520
3521/*
3522 * nfs statfs service
3523 */
3524int
e851b29e
CP
3525nfsrv_statfs(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3526 struct thread *td, struct mbuf **mrq)
984263bc
MD
3527{
3528 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3529 struct sockaddr *nam = nfsd->nd_nam;
3530 caddr_t dpos = nfsd->nd_dpos;
3531 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3532 struct statfs *sf;
3533 struct nfs_statfs *sfp;
3534 u_int32_t *tl;
3535 int32_t t1;
984263bc 3536 caddr_t bpos;
e07fef60 3537 int error = 0, rdonly, getret = 1;
984263bc
MD
3538 int v3 = (nfsd->nd_flag & ND_NFSV3);
3539 char *cp2;
3540 struct mbuf *mb, *mb2, *mreq;
3541 struct vnode *vp = NULL;
3542 struct vattr at;
3543 nfsfh_t nfh;
3544 fhandle_t *fhp;
3545 struct statfs statfs;
e07fef60 3546 u_quad_t tval;
984263bc
MD
3547
3548 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
984263bc
MD
3549 fhp = &nfh.fh_generic;
3550 nfsm_srvmtofh(fhp);
3551 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3552 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3553 if (error) {
3554 nfsm_reply(NFSX_UNSIGNED);
3555 nfsm_srvpostop_attr(getret, &at);
3556 error = 0;
3557 goto nfsmout;
3558 }
3559 sf = &statfs;
acde96db 3560 error = VFS_STATFS(vp->v_mount, sf, proc0.p_ucred);
87de5057 3561 getret = VOP_GETATTR(vp, &at);
984263bc
MD
3562 vput(vp);
3563 vp = NULL;
3564 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_STATFS(v3));
3565 if (v3)
3566 nfsm_srvpostop_attr(getret, &at);
3567 if (error) {
3568 error = 0;
3569 goto nfsmout;
3570 }
3571 nfsm_build(sfp, struct nfs_statfs *, NFSX_STATFS(v3));
3572 if (v3) {
3573 tval = (u_quad_t)sf->f_blocks;
3574 tval *= (u_quad_t)sf->f_bsize;
3575 txdr_hyper(tval, &sfp->sf_tbytes);
3576 tval = (u_quad_t)sf->f_bfree;
3577 tval *= (u_quad_t)sf->f_bsize;
3578 txdr_hyper(tval, &sfp->sf_fbytes);
3579 tval = (u_quad_t)sf->f_bavail;
3580 tval *= (u_quad_t)sf->f_bsize;
3581 txdr_hyper(tval, &sfp->sf_abytes);
3582 sfp->sf_tfiles.nfsuquad[0] = 0;
3583 sfp->sf_tfiles.nfsuquad[1] = txdr_unsigned(sf->f_files);
3584 sfp->sf_ffiles.nfsuquad[0] = 0;
3585 sfp->sf_ffiles.nfsuquad[1] = txdr_unsigned(sf->f_ffree);
3586 sfp->sf_afiles.nfsuquad[0] = 0;
3587 sfp->sf_afiles.nfsuquad[1] = txdr_unsigned(sf->f_ffree);
3588 sfp->sf_invarsec = 0;
3589 } else {
3590 sfp->sf_tsize = txdr_unsigned(NFS_MAXDGRAMDATA);
3591 sfp->sf_bsize = txdr_unsigned(sf->f_bsize);
3592 sfp->sf_blocks = txdr_unsigned(sf->f_blocks);
3593 sfp->sf_bfree = txdr_unsigned(sf->f_bfree);
3594 sfp->sf_bavail = txdr_unsigned(sf->f_bavail);
3595 }
3596nfsmout:
3597 if (vp)
3598 vput(vp);
3599 return(error);
3600}
3601
3602/*
3603 * nfs fsinfo service
3604 */
3605int
e851b29e
CP
3606nfsrv_fsinfo(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3607 struct thread *td, struct mbuf **mrq)
984263bc
MD
3608{
3609 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3610 struct sockaddr *nam = nfsd->nd_nam;
3611 caddr_t dpos = nfsd->nd_dpos;
3612 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3613 u_int32_t *tl;
3614 struct nfsv3_fsinfo *sip;
3615 int32_t t1;
984263bc 3616 caddr_t bpos;
e07fef60 3617 int error = 0, rdonly, getret = 1, pref;
984263bc
MD
3618 char *cp2;
3619 struct mbuf *mb, *mb2, *mreq;
3620 struct vnode *vp = NULL;
3621 struct vattr at;
3622 nfsfh_t nfh;
3623 fhandle_t *fhp;
e07fef60 3624 u_quad_t maxfsize;
984263bc
MD
3625 struct statfs sb;
3626
3627 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
984263bc
MD
3628 fhp = &nfh.fh_generic;
3629 nfsm_srvmtofh(fhp);
3630 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3631 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3632 if (error) {
3633 nfsm_reply(NFSX_UNSIGNED);
3634 nfsm_srvpostop_attr(getret, &at);
3635 error = 0;
3636 goto nfsmout;
3637 }
3638
3639 /* XXX Try to make a guess on the max file size. */
acde96db 3640 VFS_STATFS(vp->v_mount, &sb, proc0.p_ucred);
984263bc
MD
3641 maxfsize = (u_quad_t)0x80000000 * sb.f_bsize - 1;
3642
87de5057 3643 getret = VOP_GETATTR(vp, &at);
984263bc
MD
3644 vput(vp);
3645 vp = NULL;
3646 nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3FSINFO);
3647 nfsm_srvpostop_attr(getret, &at);
3648 nfsm_build(sip, struct nfsv3_fsinfo *, NFSX_V3FSINFO);
3649
3650 /*
3651 * XXX
3652 * There should be file system VFS OP(s) to get this information.
3653 * For now, assume ufs.
3654 */
3655 if (slp->ns_so->so_type == SOCK_DGRAM)
3656 pref = NFS_MAXDGRAMDATA;
3657 else
3658 pref = NFS_MAXDATA;
3659 sip->fs_rtmax = txdr_unsigned(NFS_MAXDATA);
3660 sip->fs_rtpref = txdr_unsigned(pref);
3661 sip->fs_rtmult = txdr_unsigned(NFS_FABLKSIZE);
3662 sip->fs_wtmax = txdr_unsigned(NFS_MAXDATA);
3663 sip->fs_wtpref = txdr_unsigned(pref);
3664 sip->fs_wtmult = txdr_unsigned(NFS_FABLKSIZE);
3665 sip->fs_dtpref = txdr_unsigned(pref);
3666 txdr_hyper(maxfsize, &sip->fs_maxfilesize);
3667 sip->fs_timedelta.nfsv3_sec = 0;
3668 sip->fs_timedelta.nfsv3_nsec = txdr_unsigned(1);
3669 sip->fs_properties = txdr_unsigned(NFSV3FSINFO_LINK |
3670 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
3671 NFSV3FSINFO_CANSETTIME);
3672nfsmout:
3673 if (vp)
3674 vput(vp);
3675 return(error);
3676}
3677
3678/*
3679 * nfs pathconf service