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[dragonfly.git] / sys / vfs / nfs / nfs_serv.c
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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 $
5fd012e0 38 * $DragonFly: src/sys/vfs/nfs/nfs_serv.c,v 1.19 2004/10/12 19:21:01 dillon Exp $
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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.
64 *
65 * lookup() and namei()
66 * may return garbage in various structural fields/return elements
67 * if an error is returned, and may garbage up nd.ni_dvp even if no
68 * error is returned and you did not request LOCKPARENT or WANTPARENT.
69 *
70 * We use the ni_cnd.cn_flags 'HASBUF' flag to track whether the name
71 * buffer has been freed or not.
72 */
73
74#include <sys/param.h>
75#include <sys/systm.h>
76#include <sys/proc.h>
77#include <sys/namei.h>
78#include <sys/unistd.h>
79#include <sys/vnode.h>
80#include <sys/mount.h>
81#include <sys/socket.h>
82#include <sys/socketvar.h>
83#include <sys/malloc.h>
84#include <sys/mbuf.h>
85#include <sys/dirent.h>
86#include <sys/stat.h>
87#include <sys/kernel.h>
88#include <sys/sysctl.h>
89#include <sys/buf.h>
90
91#include <vm/vm.h>
92#include <vm/vm_extern.h>
93#include <vm/vm_zone.h>
94#include <vm/vm_object.h>
95
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96#include <sys/buf2.h>
97
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98#include "nfsproto.h"
99#include "rpcv2.h"
100#include "nfs.h"
101#include "xdr_subs.h"
102#include "nfsm_subs.h"
103#include "nqnfs.h"
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104
105#ifdef NFSRV_DEBUG
106#define nfsdbprintf(info) printf info
107#else
108#define nfsdbprintf(info)
109#endif
110
111#define MAX_COMMIT_COUNT (1024 * 1024)
112
053a4ed4 113#define NUM_HEURISTIC 1017
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114#define NHUSE_INIT 64
115#define NHUSE_INC 16
116#define NHUSE_MAX 2048
117
118static struct nfsheur {
119 struct vnode *nh_vp; /* vp to match (unreferenced pointer) */
120 off_t nh_nextr; /* next offset for sequential detection */
121 int nh_use; /* use count for selection */
122 int nh_seqcount; /* heuristic */
123} nfsheur[NUM_HEURISTIC];
124
125nfstype nfsv3_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK,
126 NFFIFO, NFNON };
127#ifndef NFS_NOSERVER
128nfstype nfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON,
129 NFCHR, NFNON };
130/* Global vars */
131extern u_int32_t nfs_xdrneg1;
132extern u_int32_t nfs_false, nfs_true;
133extern enum vtype nv3tov_type[8];
134extern struct nfsstats nfsstats;
135
136int nfsrvw_procrastinate = NFS_GATHERDELAY * 1000;
137int nfsrvw_procrastinate_v3 = 0;
138
3a6f9faf 139static struct timespec nfsver;
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140
141SYSCTL_DECL(_vfs_nfs);
142
143static int nfs_async;
144SYSCTL_INT(_vfs_nfs, OID_AUTO, async, CTLFLAG_RW, &nfs_async, 0, "");
145static int nfs_commit_blks;
146static int nfs_commit_miss;
147SYSCTL_INT(_vfs_nfs, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 0, "");
148SYSCTL_INT(_vfs_nfs, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 0, "");
149
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150static int nfsrv_access (struct vnode *,int,struct ucred *,int,
151 struct thread *, int);
152static void nfsrvw_coalesce (struct nfsrv_descript *,
153 struct nfsrv_descript *);
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154
155/*
156 * Clear nameidata fields that are tested in nsfmout cleanup code prior
157 * to using first nfsm macro (that might jump to the cleanup code).
158 */
159
160static __inline
161void
162ndclear(struct nameidata *nd)
163{
164 nd->ni_cnd.cn_flags = 0;
165 nd->ni_vp = NULL;
166 nd->ni_dvp = NULL;
167 nd->ni_startdir = NULL;
168}
169
170/*
171 * nfs v3 access service
172 */
173int
dadab5e9 174nfsrv3_access(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
e851b29e 175 struct thread *td, struct mbuf **mrq)
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176{
177 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
178 struct sockaddr *nam = nfsd->nd_nam;
179 caddr_t dpos = nfsd->nd_dpos;
180 struct ucred *cred = &nfsd->nd_cr;
181 struct vnode *vp = NULL;
182 nfsfh_t nfh;
183 fhandle_t *fhp;
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184 u_int32_t *tl;
185 int32_t t1;
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186 caddr_t bpos;
187 int error = 0, rdonly, cache, getret;
188 char *cp2;
189 struct mbuf *mb, *mreq, *mb2;
190 struct vattr vattr, *vap = &vattr;
191 u_long testmode, nfsmode;
192 u_quad_t frev;
193
194 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
195#ifndef nolint
196 cache = 0;
197#endif
198 fhp = &nfh.fh_generic;
199 nfsm_srvmtofh(fhp);
200 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
201 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly,
202 (nfsd->nd_flag & ND_KERBAUTH), TRUE);
203 if (error) {
204 nfsm_reply(NFSX_UNSIGNED);
205 nfsm_srvpostop_attr(1, (struct vattr *)0);
206 error = 0;
207 goto nfsmout;
208 }
209 nfsmode = fxdr_unsigned(u_int32_t, *tl);
210 if ((nfsmode & NFSV3ACCESS_READ) &&
dadab5e9 211 nfsrv_access(vp, VREAD, cred, rdonly, td, 0))
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212 nfsmode &= ~NFSV3ACCESS_READ;
213 if (vp->v_type == VDIR)
214 testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND |
215 NFSV3ACCESS_DELETE);
216 else
217 testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND);
218 if ((nfsmode & testmode) &&
dadab5e9 219 nfsrv_access(vp, VWRITE, cred, rdonly, td, 0))
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220 nfsmode &= ~testmode;
221 if (vp->v_type == VDIR)
222 testmode = NFSV3ACCESS_LOOKUP;
223 else
224 testmode = NFSV3ACCESS_EXECUTE;
225 if ((nfsmode & testmode) &&
dadab5e9 226 nfsrv_access(vp, VEXEC, cred, rdonly, td, 0))
984263bc 227 nfsmode &= ~testmode;
3b568787 228 getret = VOP_GETATTR(vp, vap, td);
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229 vput(vp);
230 vp = NULL;
231 nfsm_reply(NFSX_POSTOPATTR(1) + NFSX_UNSIGNED);
232 nfsm_srvpostop_attr(getret, vap);
233 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
234 *tl = txdr_unsigned(nfsmode);
235nfsmout:
236 if (vp)
237 vput(vp);
238 return(error);
239}
240
241/*
242 * nfs getattr service
243 */
244int
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245nfsrv_getattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
246 struct thread *td, struct mbuf **mrq)
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247{
248 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
249 struct sockaddr *nam = nfsd->nd_nam;
250 caddr_t dpos = nfsd->nd_dpos;
251 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 252 struct nfs_fattr *fp;
984263bc 253 struct vattr va;
dadab5e9 254 struct vattr *vap = &va;
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255 struct vnode *vp = NULL;
256 nfsfh_t nfh;
257 fhandle_t *fhp;
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258 u_int32_t *tl;
259 int32_t t1;
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260 caddr_t bpos;
261 int error = 0, rdonly, cache;
262 char *cp2;
263 struct mbuf *mb, *mb2, *mreq;
264 u_quad_t frev;
265
266 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
267 fhp = &nfh.fh_generic;
268 nfsm_srvmtofh(fhp);
269 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
270 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
271 if (error) {
272 nfsm_reply(0);
273 error = 0;
274 goto nfsmout;
275 }
276 nqsrv_getl(vp, ND_READ);
3b568787 277 error = VOP_GETATTR(vp, vap, td);
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278 vput(vp);
279 vp = NULL;
280 nfsm_reply(NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
281 if (error) {
282 error = 0;
283 goto nfsmout;
284 }
285 nfsm_build(fp, struct nfs_fattr *, NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
286 nfsm_srvfillattr(vap, fp);
287 /* fall through */
288
289nfsmout:
290 if (vp)
291 vput(vp);
292 return(error);
293}
294
295/*
296 * nfs setattr service
297 */
298int
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299nfsrv_setattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
300 struct thread *td, struct mbuf **mrq)
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301{
302 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
303 struct sockaddr *nam = nfsd->nd_nam;
304 caddr_t dpos = nfsd->nd_dpos;
305 struct ucred *cred = &nfsd->nd_cr;
306 struct vattr va, preat;
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307 struct vattr *vap = &va;
308 struct nfsv2_sattr *sp;
309 struct nfs_fattr *fp;
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310 struct vnode *vp = NULL;
311 nfsfh_t nfh;
312 fhandle_t *fhp;
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313 u_int32_t *tl;
314 int32_t t1;
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315 caddr_t bpos;
316 int error = 0, rdonly, cache, preat_ret = 1, postat_ret = 1;
317 int v3 = (nfsd->nd_flag & ND_NFSV3), gcheck = 0;
318 char *cp2;
319 struct mbuf *mb, *mb2, *mreq;
320 u_quad_t frev;
321 struct timespec guard;
322
323 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
324 fhp = &nfh.fh_generic;
325 nfsm_srvmtofh(fhp);
326 VATTR_NULL(vap);
327 if (v3) {
328 nfsm_srvsattr(vap);
329 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
330 gcheck = fxdr_unsigned(int, *tl);
331 if (gcheck) {
332 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
333 fxdr_nfsv3time(tl, &guard);
334 }
335 } else {
336 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
337 /*
338 * Nah nah nah nah na nah
339 * There is a bug in the Sun client that puts 0xffff in the mode
340 * field of sattr when it should put in 0xffffffff. The u_short
341 * doesn't sign extend.
342 * --> check the low order 2 bytes for 0xffff
343 */
344 if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff)
345 vap->va_mode = nfstov_mode(sp->sa_mode);
346 if (sp->sa_uid != nfs_xdrneg1)
347 vap->va_uid = fxdr_unsigned(uid_t, sp->sa_uid);
348 if (sp->sa_gid != nfs_xdrneg1)
349 vap->va_gid = fxdr_unsigned(gid_t, sp->sa_gid);
350 if (sp->sa_size != nfs_xdrneg1)
351 vap->va_size = fxdr_unsigned(u_quad_t, sp->sa_size);
352 if (sp->sa_atime.nfsv2_sec != nfs_xdrneg1) {
353#ifdef notyet
354 fxdr_nfsv2time(&sp->sa_atime, &vap->va_atime);
355#else
356 vap->va_atime.tv_sec =
357 fxdr_unsigned(int32_t, sp->sa_atime.nfsv2_sec);
358 vap->va_atime.tv_nsec = 0;
359#endif
360 }
361 if (sp->sa_mtime.nfsv2_sec != nfs_xdrneg1)
362 fxdr_nfsv2time(&sp->sa_mtime, &vap->va_mtime);
363
364 }
365
366 /*
367 * Now that we have all the fields, lets do it.
368 */
369 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly,
370 (nfsd->nd_flag & ND_KERBAUTH), TRUE);
371 if (error) {
372 nfsm_reply(2 * NFSX_UNSIGNED);
373 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
374 error = 0;
375 goto nfsmout;
376 }
377
378 /*
379 * vp now an active resource, pay careful attention to cleanup
380 */
381
382 nqsrv_getl(vp, ND_WRITE);
383 if (v3) {
3b568787 384 error = preat_ret = VOP_GETATTR(vp, &preat, td);
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385 if (!error && gcheck &&
386 (preat.va_ctime.tv_sec != guard.tv_sec ||
387 preat.va_ctime.tv_nsec != guard.tv_nsec))
388 error = NFSERR_NOT_SYNC;
389 if (error) {
390 vput(vp);
391 vp = NULL;
392 nfsm_reply(NFSX_WCCDATA(v3));
393 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
394 error = 0;
395 goto nfsmout;
396 }
397 }
398
399 /*
400 * If the size is being changed write acces is required, otherwise
401 * just check for a read only file system.
402 */
403 if (vap->va_size == ((u_quad_t)((quad_t) -1))) {
404 if (rdonly || (vp->v_mount->mnt_flag & MNT_RDONLY)) {
405 error = EROFS;
406 goto out;
407 }
408 } else {
409 if (vp->v_type == VDIR) {
410 error = EISDIR;
411 goto out;
412 } else if ((error = nfsrv_access(vp, VWRITE, cred, rdonly,
dadab5e9 413 td, 0)) != 0){
984263bc 414 goto out;
dadab5e9 415 }
984263bc 416 }
dadab5e9 417 error = VOP_SETATTR(vp, vap, cred, td);
3b568787 418 postat_ret = VOP_GETATTR(vp, vap, td);
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MD
419 if (!error)
420 error = postat_ret;
421out:
422 vput(vp);
423 vp = NULL;
424 nfsm_reply(NFSX_WCCORFATTR(v3));
425 if (v3) {
426 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
427 error = 0;
428 goto nfsmout;
429 } else {
430 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
431 nfsm_srvfillattr(vap, fp);
432 }
433 /* fall through */
434
435nfsmout:
436 if (vp)
437 vput(vp);
438 return(error);
439}
440
441/*
442 * nfs lookup rpc
443 */
444int
e851b29e
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445nfsrv_lookup(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
446 struct thread *td, struct mbuf **mrq)
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447{
448 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
449 struct sockaddr *nam = nfsd->nd_nam;
450 caddr_t dpos = nfsd->nd_dpos;
451 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 452 struct nfs_fattr *fp;
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453 struct nameidata nd, ind, *ndp = &nd;
454 struct vnode *vp, *dirp = NULL;
455 nfsfh_t nfh;
456 fhandle_t *fhp;
dadab5e9
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457 caddr_t cp;
458 u_int32_t *tl;
459 int32_t t1;
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460 caddr_t bpos;
461 int error = 0, cache, len, dirattr_ret = 1;
462 int v3 = (nfsd->nd_flag & ND_NFSV3), pubflag;
463 char *cp2;
464 struct mbuf *mb, *mb2, *mreq;
465 struct vattr va, dirattr, *vap = &va;
466 u_quad_t frev;
467
468 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
469 ndclear(&nd);
470
471 fhp = &nfh.fh_generic;
472 nfsm_srvmtofh(fhp);
473 nfsm_srvnamesiz(len);
474
475 pubflag = nfs_ispublicfh(fhp);
476
477 nd.ni_cnd.cn_cred = cred;
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478 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
479 nd.ni_cnd.cn_flags = CNP_LOCKLEAF | CNP_SAVESTART;
984263bc 480 error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
dadab5e9 481 &dirp, td, (nfsd->nd_flag & ND_KERBAUTH), pubflag);
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482
483 /*
484 * namei failure, only dirp to cleanup. Clear out garbarge from
485 * structure in case macros jump to nfsmout.
486 */
487
488 if (error) {
489 if (dirp) {
490 if (v3)
3b568787 491 dirattr_ret = VOP_GETATTR(dirp, &dirattr, td);
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492 vrele(dirp);
493 dirp = NULL;
494 }
495 nfsm_reply(NFSX_POSTOPATTR(v3));
496 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
497 error = 0;
498 goto nfsmout;
499 }
500
501 /*
502 * Locate index file for public filehandle
503 *
504 * error is 0 on entry and 0 on exit from this block.
505 */
506
507 if (pubflag) {
508 if (nd.ni_vp->v_type == VDIR && nfs_pub.np_index != NULL) {
509 /*
510 * Setup call to lookup() to see if we can find
511 * the index file. Arguably, this doesn't belong
512 * in a kernel.. Ugh. If an error occurs, do not
513 * try to install an index file and then clear the
514 * error.
515 *
516 * When we replace nd with ind and redirect ndp,
517 * maintenance of ni_startdir and ni_vp shift to
518 * ind and we have to clean them up in the old nd.
519 * However, the cnd resource continues to be maintained
520 * via the original nd. Confused? You aren't alone!
521 */
522 ind = nd;
5fd012e0 523 VOP_UNLOCK(nd.ni_vp, 0, td);
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524 ind.ni_pathlen = strlen(nfs_pub.np_index);
525 ind.ni_cnd.cn_nameptr = ind.ni_cnd.cn_pnbuf =
526 nfs_pub.np_index;
527 ind.ni_startdir = nd.ni_vp;
597aea93 528 vref(ind.ni_startdir);
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529
530 error = lookup(&ind);
531 ind.ni_dvp = NULL;
532
533 if (error == 0) {
534 /*
535 * Found an index file. Get rid of
536 * the old references. transfer nd.ni_vp'
537 */
538 if (dirp)
539 vrele(dirp);
540 dirp = nd.ni_vp;
541 nd.ni_vp = NULL;
542 vrele(nd.ni_startdir);
543 nd.ni_startdir = NULL;
544 ndp = &ind;
545 }
546 error = 0;
547 }
548 /*
549 * If the public filehandle was used, check that this lookup
550 * didn't result in a filehandle outside the publicly exported
551 * filesystem. We clear the poor vp here to avoid lockups due
552 * to NFS I/O.
553 */
554
555 if (ndp->ni_vp->v_mount != nfs_pub.np_mount) {
556 vput(nd.ni_vp);
557 nd.ni_vp = NULL;
558 error = EPERM;
559 }
560 }
561
562 if (dirp) {
563 if (v3)
3b568787 564 dirattr_ret = VOP_GETATTR(dirp, &dirattr, td);
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565 vrele(dirp);
566 dirp = NULL;
567 }
568
569 /*
570 * Resources at this point:
571 * ndp->ni_vp may not be NULL
572 *
573 */
574
575 if (error) {
576 nfsm_reply(NFSX_POSTOPATTR(v3));
577 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
578 error = 0;
579 goto nfsmout;
580 }
581
582 nqsrv_getl(ndp->ni_startdir, ND_READ);
583
584 /*
585 * Clear out some resources prior to potentially blocking. This
586 * is not as critical as ni_dvp resources in other routines, but
587 * it helps.
588 */
589 vrele(ndp->ni_startdir);
590 ndp->ni_startdir = NULL;
591 NDFREE(&nd, NDF_ONLY_PNBUF);
592
593 /*
594 * Get underlying attribute, then release remaining resources ( for
595 * the same potential blocking reason ) and reply.
596 */
597 vp = ndp->ni_vp;
598 bzero((caddr_t)fhp, sizeof(nfh));
599 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
600 error = VFS_VPTOFH(vp, &fhp->fh_fid);
601 if (!error)
3b568787 602 error = VOP_GETATTR(vp, vap, td);
984263bc
MD
603
604 vput(vp);
605 ndp->ni_vp = NULL;
606 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPORFATTR(v3) + NFSX_POSTOPATTR(v3));
607 if (error) {
608 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
609 error = 0;
610 goto nfsmout;
611 }
612 nfsm_srvfhtom(fhp, v3);
613 if (v3) {
614 nfsm_srvpostop_attr(0, vap);
615 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
616 } else {
617 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
618 nfsm_srvfillattr(vap, fp);
619 }
620
621nfsmout:
622 if (dirp)
623 vrele(dirp);
624 NDFREE(&nd, NDF_ONLY_PNBUF);
625 if (ndp->ni_startdir)
626 vrele(ndp->ni_startdir);
627 if (ndp->ni_vp)
628 vput(ndp->ni_vp);
629 return (error);
630}
631
632/*
633 * nfs readlink service
634 */
635int
e851b29e
CP
636nfsrv_readlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
637 struct thread *td, struct mbuf **mrq)
984263bc
MD
638{
639 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
640 struct sockaddr *nam = nfsd->nd_nam;
641 caddr_t dpos = nfsd->nd_dpos;
642 struct ucred *cred = &nfsd->nd_cr;
643 struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN];
dadab5e9
MD
644 struct iovec *ivp = iv;
645 struct mbuf *mp;
646 u_int32_t *tl;
647 int32_t t1;
984263bc
MD
648 caddr_t bpos;
649 int error = 0, rdonly, cache, i, tlen, len, getret;
650 int v3 = (nfsd->nd_flag & ND_NFSV3);
651 char *cp2;
652 struct mbuf *mb, *mb2, *mp2, *mp3, *mreq;
653 struct vnode *vp = NULL;
654 struct vattr attr;
655 nfsfh_t nfh;
656 fhandle_t *fhp;
657 struct uio io, *uiop = &io;
658 u_quad_t frev;
659
660 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
661#ifndef nolint
662 mp2 = (struct mbuf *)0;
663#endif
664 mp3 = NULL;
665 fhp = &nfh.fh_generic;
666 nfsm_srvmtofh(fhp);
667 len = 0;
668 i = 0;
669 while (len < NFS_MAXPATHLEN) {
74f1caca
EN
670 MGET(mp, MB_WAIT, MT_DATA);
671 MCLGET(mp, MB_WAIT);
984263bc
MD
672 mp->m_len = NFSMSIZ(mp);
673 if (len == 0)
674 mp3 = mp2 = mp;
675 else {
676 mp2->m_next = mp;
677 mp2 = mp;
678 }
679 if ((len+mp->m_len) > NFS_MAXPATHLEN) {
680 mp->m_len = NFS_MAXPATHLEN-len;
681 len = NFS_MAXPATHLEN;
682 } else
683 len += mp->m_len;
684 ivp->iov_base = mtod(mp, caddr_t);
685 ivp->iov_len = mp->m_len;
686 i++;
687 ivp++;
688 }
689 uiop->uio_iov = iv;
690 uiop->uio_iovcnt = i;
691 uiop->uio_offset = 0;
692 uiop->uio_resid = len;
693 uiop->uio_rw = UIO_READ;
694 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 695 uiop->uio_td = NULL;
984263bc
MD
696 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
697 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
698 if (error) {
699 nfsm_reply(2 * NFSX_UNSIGNED);
700 nfsm_srvpostop_attr(1, (struct vattr *)0);
701 error = 0;
702 goto nfsmout;
703 }
704 if (vp->v_type != VLNK) {
705 if (v3)
706 error = EINVAL;
707 else
708 error = ENXIO;
709 goto out;
710 }
711 nqsrv_getl(vp, ND_READ);
712 error = VOP_READLINK(vp, uiop, cred);
713out:
3b568787 714 getret = VOP_GETATTR(vp, &attr, td);
984263bc
MD
715 vput(vp);
716 vp = NULL;
717 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_UNSIGNED);
718 if (v3) {
719 nfsm_srvpostop_attr(getret, &attr);
720 if (error) {
721 error = 0;
722 goto nfsmout;
723 }
724 }
725 if (uiop->uio_resid > 0) {
726 len -= uiop->uio_resid;
727 tlen = nfsm_rndup(len);
728 nfsm_adj(mp3, NFS_MAXPATHLEN-tlen, tlen-len);
729 }
730 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
731 *tl = txdr_unsigned(len);
732 mb->m_next = mp3;
733 mp3 = NULL;
734nfsmout:
735 if (mp3)
736 m_freem(mp3);
737 if (vp)
738 vput(vp);
739 return(error);
740}
741
742/*
743 * nfs read service
744 */
745int
e851b29e
CP
746nfsrv_read(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
747 struct thread *td, struct mbuf **mrq)
984263bc
MD
748{
749 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
750 struct sockaddr *nam = nfsd->nd_nam;
751 caddr_t dpos = nfsd->nd_dpos;
752 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 753 struct iovec *iv;
984263bc 754 struct iovec *iv2;
dadab5e9
MD
755 struct mbuf *m;
756 struct nfs_fattr *fp;
757 u_int32_t *tl;
758 int32_t t1;
759 int i;
984263bc
MD
760 caddr_t bpos;
761 int error = 0, rdonly, cache, cnt, len, left, siz, tlen, getret;
762 int v3 = (nfsd->nd_flag & ND_NFSV3), reqlen;
763 char *cp2;
764 struct mbuf *mb, *mb2, *mreq;
765 struct mbuf *m2;
766 struct vnode *vp = NULL;
767 nfsfh_t nfh;
768 fhandle_t *fhp;
769 struct uio io, *uiop = &io;
770 struct vattr va, *vap = &va;
771 struct nfsheur *nh;
772 off_t off;
773 int ioflag = 0;
774 u_quad_t frev;
775
776 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
777 fhp = &nfh.fh_generic;
778 nfsm_srvmtofh(fhp);
779 if (v3) {
780 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
781 off = fxdr_hyper(tl);
782 } else {
783 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
784 off = (off_t)fxdr_unsigned(u_int32_t, *tl);
785 }
786 nfsm_srvstrsiz(reqlen, NFS_SRVMAXDATA(nfsd));
787
788 /*
789 * Reference vp. If an error occurs, vp will be invalid, but we
790 * have to NULL it just in case. The macros might goto nfsmout
791 * as well.
792 */
793
794 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
795 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
796 if (error) {
797 vp = NULL;
798 nfsm_reply(2 * NFSX_UNSIGNED);
799 nfsm_srvpostop_attr(1, (struct vattr *)0);
800 error = 0;
801 goto nfsmout;
802 }
803
804 if (vp->v_type != VREG) {
805 if (v3)
806 error = EINVAL;
807 else
808 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
809 }
810 if (!error) {
811 nqsrv_getl(vp, ND_READ);
dadab5e9
MD
812 if ((error = nfsrv_access(vp, VREAD, cred, rdonly, td, 1)) != 0)
813 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 1);
984263bc 814 }
3b568787 815 getret = VOP_GETATTR(vp, vap, td);
984263bc
MD
816 if (!error)
817 error = getret;
818 if (error) {
819 vput(vp);
820 vp = NULL;
821 nfsm_reply(NFSX_POSTOPATTR(v3));
822 nfsm_srvpostop_attr(getret, vap);
823 error = 0;
824 goto nfsmout;
825 }
826
827 /*
828 * Calculate byte count to read
829 */
830
831 if (off >= vap->va_size)
832 cnt = 0;
833 else if ((off + reqlen) > vap->va_size)
834 cnt = vap->va_size - off;
835 else
836 cnt = reqlen;
837
838 /*
839 * Calculate seqcount for heuristic
840 */
841
842 {
843 int hi;
053a4ed4 844 int try = 32;
984263bc
MD
845
846 /*
847 * Locate best candidate
848 */
849
053a4ed4 850 hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC;
984263bc
MD
851 nh = &nfsheur[hi];
852
853 while (try--) {
854 if (nfsheur[hi].nh_vp == vp) {
855 nh = &nfsheur[hi];
856 break;
857 }
858 if (nfsheur[hi].nh_use > 0)
859 --nfsheur[hi].nh_use;
053a4ed4 860 hi = (hi + 1) % NUM_HEURISTIC;
984263bc
MD
861 if (nfsheur[hi].nh_use < nh->nh_use)
862 nh = &nfsheur[hi];
863 }
864
865 if (nh->nh_vp != vp) {
866 nh->nh_vp = vp;
867 nh->nh_nextr = off;
868 nh->nh_use = NHUSE_INIT;
869 if (off == 0)
870 nh->nh_seqcount = 4;
871 else
872 nh->nh_seqcount = 1;
873 }
874
875 /*
876 * Calculate heuristic
877 */
878
879 if ((off == 0 && nh->nh_seqcount > 0) || off == nh->nh_nextr) {
880 if (++nh->nh_seqcount > IO_SEQMAX)
881 nh->nh_seqcount = IO_SEQMAX;
882 } else if (nh->nh_seqcount > 1) {
883 nh->nh_seqcount = 1;
884 } else {
885 nh->nh_seqcount = 0;
886 }
887 nh->nh_use += NHUSE_INC;
888 if (nh->nh_use > NHUSE_MAX)
889 nh->nh_use = NHUSE_MAX;
890 ioflag |= nh->nh_seqcount << IO_SEQSHIFT;
891 }
892
893 nfsm_reply(NFSX_POSTOPORFATTR(v3) + 3 * NFSX_UNSIGNED+nfsm_rndup(cnt));
894 if (v3) {
895 nfsm_build(tl, u_int32_t *, NFSX_V3FATTR + 4 * NFSX_UNSIGNED);
896 *tl++ = nfs_true;
897 fp = (struct nfs_fattr *)tl;
898 tl += (NFSX_V3FATTR / sizeof (u_int32_t));
899 } else {
900 nfsm_build(tl, u_int32_t *, NFSX_V2FATTR + NFSX_UNSIGNED);
901 fp = (struct nfs_fattr *)tl;
902 tl += (NFSX_V2FATTR / sizeof (u_int32_t));
903 }
904 len = left = nfsm_rndup(cnt);
905 if (cnt > 0) {
906 /*
907 * Generate the mbuf list with the uio_iov ref. to it.
908 */
909 i = 0;
910 m = m2 = mb;
911 while (left > 0) {
912 siz = min(M_TRAILINGSPACE(m), left);
913 if (siz > 0) {
914 left -= siz;
915 i++;
916 }
917 if (left > 0) {
74f1caca
EN
918 MGET(m, MB_WAIT, MT_DATA);
919 MCLGET(m, MB_WAIT);
984263bc
MD
920 m->m_len = 0;
921 m2->m_next = m;
922 m2 = m;
923 }
924 }
925 MALLOC(iv, struct iovec *, i * sizeof (struct iovec),
926 M_TEMP, M_WAITOK);
927 uiop->uio_iov = iv2 = iv;
928 m = mb;
929 left = len;
930 i = 0;
931 while (left > 0) {
932 if (m == NULL)
933 panic("nfsrv_read iov");
934 siz = min(M_TRAILINGSPACE(m), left);
935 if (siz > 0) {
936 iv->iov_base = mtod(m, caddr_t) + m->m_len;
937 iv->iov_len = siz;
938 m->m_len += siz;
939 left -= siz;
940 iv++;
941 i++;
942 }
943 m = m->m_next;
944 }
945 uiop->uio_iovcnt = i;
946 uiop->uio_offset = off;
947 uiop->uio_resid = len;
948 uiop->uio_rw = UIO_READ;
949 uiop->uio_segflg = UIO_SYSSPACE;
950 error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred);
951 off = uiop->uio_offset;
952 nh->nh_nextr = off;
953 FREE((caddr_t)iv2, M_TEMP);
3b568787 954 if (error || (getret = VOP_GETATTR(vp, vap, td))) {
984263bc
MD
955 if (!error)
956 error = getret;
957 m_freem(mreq);
958 vput(vp);
959 vp = NULL;
960 nfsm_reply(NFSX_POSTOPATTR(v3));
961 nfsm_srvpostop_attr(getret, vap);
962 error = 0;
963 goto nfsmout;
964 }
965 } else {
966 uiop->uio_resid = 0;
967 }
968 vput(vp);
969 vp = NULL;
970 nfsm_srvfillattr(vap, fp);
971 tlen = len - uiop->uio_resid;
972 cnt = cnt < tlen ? cnt : tlen;
973 tlen = nfsm_rndup(cnt);
974 if (len != tlen || tlen != cnt)
975 nfsm_adj(mb, len - tlen, tlen - cnt);
976 if (v3) {
977 *tl++ = txdr_unsigned(cnt);
978 if (len < reqlen)
979 *tl++ = nfs_true;
980 else
981 *tl++ = nfs_false;
982 }
983 *tl = txdr_unsigned(cnt);
984nfsmout:
985 if (vp)
986 vput(vp);
987 return(error);
988}
989
990/*
991 * nfs write service
992 */
993int
e851b29e
CP
994nfsrv_write(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
995 struct thread *td, struct mbuf **mrq)
984263bc
MD
996{
997 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
998 struct sockaddr *nam = nfsd->nd_nam;
999 caddr_t dpos = nfsd->nd_dpos;
1000 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
1001 struct iovec *ivp;
1002 int i, cnt;
1003 struct mbuf *mp;
1004 struct nfs_fattr *fp;
984263bc
MD
1005 struct iovec *iv;
1006 struct vattr va, forat;
dadab5e9
MD
1007 struct vattr *vap = &va;
1008 u_int32_t *tl;
1009 int32_t t1;
984263bc
MD
1010 caddr_t bpos;
1011 int error = 0, rdonly, cache, len, forat_ret = 1;
1012 int ioflags, aftat_ret = 1, retlen, zeroing, adjust;
1013 int stable = NFSV3WRITE_FILESYNC;
1014 int v3 = (nfsd->nd_flag & ND_NFSV3);
1015 char *cp2;
1016 struct mbuf *mb, *mb2, *mreq;
1017 struct vnode *vp = NULL;
1018 nfsfh_t nfh;
1019 fhandle_t *fhp;
1020 struct uio io, *uiop = &io;
1021 off_t off;
1022 u_quad_t frev;
1023
1024 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
1025 if (mrep == NULL) {
1026 *mrq = NULL;
1027 error = 0;
1028 goto nfsmout;
1029 }
1030 fhp = &nfh.fh_generic;
1031 nfsm_srvmtofh(fhp);
1032 if (v3) {
1033 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1034 off = fxdr_hyper(tl);
1035 tl += 3;
1036 stable = fxdr_unsigned(int, *tl++);
1037 } else {
1038 nfsm_dissect(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1039 off = (off_t)fxdr_unsigned(u_int32_t, *++tl);
1040 tl += 2;
1041 if (nfs_async)
1042 stable = NFSV3WRITE_UNSTABLE;
1043 }
1044 retlen = len = fxdr_unsigned(int32_t, *tl);
1045 cnt = i = 0;
1046
1047 /*
1048 * For NFS Version 2, it is not obvious what a write of zero length
1049 * should do, but I might as well be consistent with Version 3,
1050 * which is to return ok so long as there are no permission problems.
1051 */
1052 if (len > 0) {
1053 zeroing = 1;
1054 mp = mrep;
1055 while (mp) {
1056 if (mp == md) {
1057 zeroing = 0;
1058 adjust = dpos - mtod(mp, caddr_t);
1059 mp->m_len -= adjust;
1060 if (mp->m_len > 0 && adjust > 0)
1061 NFSMADV(mp, adjust);
1062 }
1063 if (zeroing)
1064 mp->m_len = 0;
1065 else if (mp->m_len > 0) {
1066 i += mp->m_len;
1067 if (i > len) {
1068 mp->m_len -= (i - len);
1069 zeroing = 1;
1070 }
1071 if (mp->m_len > 0)
1072 cnt++;
1073 }
1074 mp = mp->m_next;
1075 }
1076 }
1077 if (len > NFS_MAXDATA || len < 0 || i < len) {
1078 error = EIO;
1079 nfsm_reply(2 * NFSX_UNSIGNED);
1080 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1081 error = 0;
1082 goto nfsmout;
1083 }
1084 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
1085 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
1086 if (error) {
1087 vp = NULL;
1088 nfsm_reply(2 * NFSX_UNSIGNED);
1089 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1090 error = 0;
1091 goto nfsmout;
1092 }
1093 if (v3)
3b568787 1094 forat_ret = VOP_GETATTR(vp, &forat, td);
984263bc
MD
1095 if (vp->v_type != VREG) {
1096 if (v3)
1097 error = EINVAL;
1098 else
1099 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
1100 }
1101 if (!error) {
1102 nqsrv_getl(vp, ND_WRITE);
dadab5e9 1103 error = nfsrv_access(vp, VWRITE, cred, rdonly, td, 1);
984263bc
MD
1104 }
1105 if (error) {
1106 vput(vp);
1107 vp = NULL;
1108 nfsm_reply(NFSX_WCCDATA(v3));
1109 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1110 error = 0;
1111 goto nfsmout;
1112 }
1113
1114 if (len > 0) {
1115 MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP,
1116 M_WAITOK);
1117 uiop->uio_iov = iv = ivp;
1118 uiop->uio_iovcnt = cnt;
1119 mp = mrep;
1120 while (mp) {
1121 if (mp->m_len > 0) {
1122 ivp->iov_base = mtod(mp, caddr_t);
1123 ivp->iov_len = mp->m_len;
1124 ivp++;
1125 }
1126 mp = mp->m_next;
1127 }
1128
1129 /*
1130 * XXX
1131 * The IO_METASYNC flag indicates that all metadata (and not just
1132 * enough to ensure data integrity) mus be written to stable storage
1133 * synchronously.
1134 * (IO_METASYNC is not yet implemented in 4.4BSD-Lite.)
1135 */
1136 if (stable == NFSV3WRITE_UNSTABLE)
1137 ioflags = IO_NODELOCKED;
1138 else if (stable == NFSV3WRITE_DATASYNC)
1139 ioflags = (IO_SYNC | IO_NODELOCKED);
1140 else
1141 ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
1142 uiop->uio_resid = len;
1143 uiop->uio_rw = UIO_WRITE;
1144 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 1145 uiop->uio_td = NULL;
984263bc
MD
1146 uiop->uio_offset = off;
1147 error = VOP_WRITE(vp, uiop, ioflags, cred);
1148 nfsstats.srvvop_writes++;
1149 FREE((caddr_t)iv, M_TEMP);
1150 }
3b568787 1151 aftat_ret = VOP_GETATTR(vp, vap, td);
984263bc
MD
1152 vput(vp);
1153 vp = NULL;
1154 if (!error)
1155 error = aftat_ret;
1156 nfsm_reply(NFSX_PREOPATTR(v3) + NFSX_POSTOPORFATTR(v3) +
1157 2 * NFSX_UNSIGNED + NFSX_WRITEVERF(v3));
1158 if (v3) {
1159 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1160 if (error) {
1161 error = 0;
1162 goto nfsmout;
1163 }
1164 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1165 *tl++ = txdr_unsigned(retlen);
1166 /*
1167 * If nfs_async is set, then pretend the write was FILESYNC.
1168 */
1169 if (stable == NFSV3WRITE_UNSTABLE && !nfs_async)
1170 *tl++ = txdr_unsigned(stable);
1171 else
1172 *tl++ = txdr_unsigned(NFSV3WRITE_FILESYNC);
1173 /*
1174 * Actually, there is no need to txdr these fields,
1175 * but it may make the values more human readable,
1176 * for debugging purposes.
1177 */
1178 if (nfsver.tv_sec == 0)
1179 nfsver = boottime;
1180 *tl++ = txdr_unsigned(nfsver.tv_sec);
3a6f9faf 1181 *tl = txdr_unsigned(nfsver.tv_nsec / 1000);
984263bc
MD
1182 } else {
1183 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1184 nfsm_srvfillattr(vap, fp);
1185 }
1186nfsmout:
1187 if (vp)
1188 vput(vp);
1189 return(error);
1190}
1191
1192/*
1193 * NFS write service with write gathering support. Called when
1194 * nfsrvw_procrastinate > 0.
1195 * See: Chet Juszczak, "Improving the Write Performance of an NFS Server",
1196 * in Proc. of the Winter 1994 Usenix Conference, pg. 247-259, San Franscisco,
1197 * Jan. 1994.
1198 */
1199int
e851b29e
CP
1200nfsrv_writegather(struct nfsrv_descript **ndp, struct nfssvc_sock *slp,
1201 struct thread *td, struct mbuf **mrq)
984263bc 1202{
dadab5e9
MD
1203 struct iovec *ivp;
1204 struct mbuf *mp;
1205 struct nfsrv_descript *wp, *nfsd, *owp, *swp;
1206 struct nfs_fattr *fp;
1207 int i;
984263bc
MD
1208 struct iovec *iov;
1209 struct nfsrvw_delayhash *wpp;
1210 struct ucred *cred;
1211 struct vattr va, forat;
dadab5e9
MD
1212 u_int32_t *tl;
1213 int32_t t1;
984263bc
MD
1214 caddr_t bpos, dpos;
1215 int error = 0, rdonly, cache, len, forat_ret = 1;
1216 int ioflags, aftat_ret = 1, s, adjust, v3, zeroing;
1217 char *cp2;
1218 struct mbuf *mb, *mb2, *mreq, *mrep, *md;
1219 struct vnode *vp = NULL;
1220 struct uio io, *uiop = &io;
1221 u_quad_t frev, cur_usec;
1222
1223 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
1224#ifndef nolint
1225 i = 0;
1226 len = 0;
1227#endif
1228 *mrq = NULL;
1229 if (*ndp) {
1230 nfsd = *ndp;
1231 *ndp = NULL;
1232 mrep = nfsd->nd_mrep;
1233 md = nfsd->nd_md;
1234 dpos = nfsd->nd_dpos;
1235 cred = &nfsd->nd_cr;
1236 v3 = (nfsd->nd_flag & ND_NFSV3);
1237 LIST_INIT(&nfsd->nd_coalesce);
1238 nfsd->nd_mreq = NULL;
1239 nfsd->nd_stable = NFSV3WRITE_FILESYNC;
1240 cur_usec = nfs_curusec();
1241 nfsd->nd_time = cur_usec +
1242 (v3 ? nfsrvw_procrastinate_v3 : nfsrvw_procrastinate);
1243
1244 /*
1245 * Now, get the write header..
1246 */
1247 nfsm_srvmtofh(&nfsd->nd_fh);
1248 if (v3) {
1249 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1250 nfsd->nd_off = fxdr_hyper(tl);
1251 tl += 3;
1252 nfsd->nd_stable = fxdr_unsigned(int, *tl++);
1253 } else {
1254 nfsm_dissect(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1255 nfsd->nd_off = (off_t)fxdr_unsigned(u_int32_t, *++tl);
1256 tl += 2;
1257 if (nfs_async)
1258 nfsd->nd_stable = NFSV3WRITE_UNSTABLE;
1259 }
1260 len = fxdr_unsigned(int32_t, *tl);
1261 nfsd->nd_len = len;
1262 nfsd->nd_eoff = nfsd->nd_off + len;
1263
1264 /*
1265 * Trim the header out of the mbuf list and trim off any trailing
1266 * junk so that the mbuf list has only the write data.
1267 */
1268 zeroing = 1;
1269 i = 0;
1270 mp = mrep;
1271 while (mp) {
1272 if (mp == md) {
1273 zeroing = 0;
1274 adjust = dpos - mtod(mp, caddr_t);
1275 mp->m_len -= adjust;
1276 if (mp->m_len > 0 && adjust > 0)
1277 NFSMADV(mp, adjust);
1278 }
1279 if (zeroing)
1280 mp->m_len = 0;
1281 else {
1282 i += mp->m_len;
1283 if (i > len) {
1284 mp->m_len -= (i - len);
1285 zeroing = 1;
1286 }
1287 }
1288 mp = mp->m_next;
1289 }
1290 if (len > NFS_MAXDATA || len < 0 || i < len) {
1291nfsmout:
1292 m_freem(mrep);
1293 error = EIO;
1294 nfsm_writereply(2 * NFSX_UNSIGNED, v3);
1295 if (v3)
1296 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1297 nfsd->nd_mreq = mreq;
1298 nfsd->nd_mrep = NULL;
1299 nfsd->nd_time = 0;
1300 }
1301
1302 /*
1303 * Add this entry to the hash and time queues.
1304 */
1305 s = splsoftclock();
1306 owp = NULL;
1307 wp = slp->ns_tq.lh_first;
1308 while (wp && wp->nd_time < nfsd->nd_time) {
1309 owp = wp;
1310 wp = wp->nd_tq.le_next;
1311 }
1312 NFS_DPF(WG, ("Q%03x", nfsd->nd_retxid & 0xfff));
1313 if (owp) {
1314 LIST_INSERT_AFTER(owp, nfsd, nd_tq);
1315 } else {
1316 LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
1317 }
1318 if (nfsd->nd_mrep) {
1319 wpp = NWDELAYHASH(slp, nfsd->nd_fh.fh_fid.fid_data);
1320 owp = NULL;
1321 wp = wpp->lh_first;
1322 while (wp &&
1323 bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
1324 owp = wp;
1325 wp = wp->nd_hash.le_next;
1326 }
1327 while (wp && wp->nd_off < nfsd->nd_off &&
1328 !bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
1329 owp = wp;
1330 wp = wp->nd_hash.le_next;
1331 }
1332 if (owp) {
1333 LIST_INSERT_AFTER(owp, nfsd, nd_hash);
1334
1335 /*
1336 * Search the hash list for overlapping entries and
1337 * coalesce.
1338 */
1339 for(; nfsd && NFSW_CONTIG(owp, nfsd); nfsd = wp) {
1340 wp = nfsd->nd_hash.le_next;
1341 if (NFSW_SAMECRED(owp, nfsd))
1342 nfsrvw_coalesce(owp, nfsd);
1343 }
1344 } else {
1345 LIST_INSERT_HEAD(wpp, nfsd, nd_hash);
1346 }
1347 }
1348 splx(s);
1349 }
1350
1351 /*
1352 * Now, do VOP_WRITE()s for any one(s) that need to be done now
1353 * and generate the associated reply mbuf list(s).
1354 */
1355loop1:
1356 cur_usec = nfs_curusec();
1357 s = splsoftclock();
1358 for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = owp) {
1359 owp = nfsd->nd_tq.le_next;
1360 if (nfsd->nd_time > cur_usec)
1361 break;
1362 if (nfsd->nd_mreq)
1363 continue;
1364 NFS_DPF(WG, ("P%03x", nfsd->nd_retxid & 0xfff));
1365 LIST_REMOVE(nfsd, nd_tq);
1366 LIST_REMOVE(nfsd, nd_hash);
1367 splx(s);
1368 mrep = nfsd->nd_mrep;
1369 nfsd->nd_mrep = NULL;
1370 cred = &nfsd->nd_cr;
1371 v3 = (nfsd->nd_flag & ND_NFSV3);
1372 forat_ret = aftat_ret = 1;
1373 error = nfsrv_fhtovp(&nfsd->nd_fh, 1, &vp, cred, slp,
1374 nfsd->nd_nam, &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
1375 if (!error) {
1376 if (v3)
3b568787 1377 forat_ret = VOP_GETATTR(vp, &forat, td);
984263bc
MD
1378 if (vp->v_type != VREG) {
1379 if (v3)
1380 error = EINVAL;
1381 else
1382 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
1383 }
1384 } else {
1385 vp = NULL;
1386 }
1387 if (!error) {
1388 nqsrv_getl(vp, ND_WRITE);
dadab5e9 1389 error = nfsrv_access(vp, VWRITE, cred, rdonly, td, 1);
984263bc
MD
1390 }
1391
1392 if (nfsd->nd_stable == NFSV3WRITE_UNSTABLE)
1393 ioflags = IO_NODELOCKED;
1394 else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC)
1395 ioflags = (IO_SYNC | IO_NODELOCKED);
1396 else
1397 ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
1398 uiop->uio_rw = UIO_WRITE;
1399 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 1400 uiop->uio_td = NULL;
984263bc
MD
1401 uiop->uio_offset = nfsd->nd_off;
1402 uiop->uio_resid = nfsd->nd_eoff - nfsd->nd_off;
1403 if (uiop->uio_resid > 0) {
1404 mp = mrep;
1405 i = 0;
1406 while (mp) {
1407 if (mp->m_len > 0)
1408 i++;
1409 mp = mp->m_next;
1410 }
1411 uiop->uio_iovcnt = i;
1412 MALLOC(iov, struct iovec *, i * sizeof (struct iovec),
1413 M_TEMP, M_WAITOK);
1414 uiop->uio_iov = ivp = iov;
1415 mp = mrep;
1416 while (mp) {
1417 if (mp->m_len > 0) {
1418 ivp->iov_base = mtod(mp, caddr_t);
1419 ivp->iov_len = mp->m_len;
1420 ivp++;
1421 }
1422 mp = mp->m_next;
1423 }
1424 if (!error) {
1425 error = VOP_WRITE(vp, uiop, ioflags, cred);
1426 nfsstats.srvvop_writes++;
1427 }
1428 FREE((caddr_t)iov, M_TEMP);
1429 }
1430 m_freem(mrep);
1431 if (vp) {
3b568787 1432 aftat_ret = VOP_GETATTR(vp, &va, td);
984263bc
MD
1433 vput(vp);
1434 vp = NULL;
1435 }
1436
1437 /*
1438 * Loop around generating replies for all write rpcs that have
1439 * now been completed.
1440 */
1441 swp = nfsd;
1442 do {
1443 NFS_DPF(WG, ("R%03x", nfsd->nd_retxid & 0xfff));
1444 if (error) {
1445 nfsm_writereply(NFSX_WCCDATA(v3), v3);
1446 if (v3) {
1447 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1448 }
1449 } else {
1450 nfsm_writereply(NFSX_PREOPATTR(v3) +
1451 NFSX_POSTOPORFATTR(v3) + 2 * NFSX_UNSIGNED +
1452 NFSX_WRITEVERF(v3), v3);
1453 if (v3) {
1454 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1455 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1456 *tl++ = txdr_unsigned(nfsd->nd_len);
1457 *tl++ = txdr_unsigned(swp->nd_stable);
1458 /*
1459 * Actually, there is no need to txdr these fields,
1460 * but it may make the values more human readable,
1461 * for debugging purposes.
1462 */
1463 if (nfsver.tv_sec == 0)
1464 nfsver = boottime;
1465 *tl++ = txdr_unsigned(nfsver.tv_sec);
3a6f9faf 1466 *tl = txdr_unsigned(nfsver.tv_nsec / 1000);
984263bc
MD
1467 } else {
1468 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1469 nfsm_srvfillattr(&va, fp);
1470 }
1471 }
1472 nfsd->nd_mreq = mreq;
1473 if (nfsd->nd_mrep)
1474 panic("nfsrv_write: nd_mrep not free");
1475
1476 /*
1477 * Done. Put it at the head of the timer queue so that
1478 * the final phase can return the reply.
1479 */
1480 s = splsoftclock();
1481 if (nfsd != swp) {
1482 nfsd->nd_time = 0;
1483 LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
1484 }
1485 nfsd = swp->nd_coalesce.lh_first;
1486 if (nfsd) {
1487 LIST_REMOVE(nfsd, nd_tq);
1488 }
1489 splx(s);
1490 } while (nfsd);
1491 s = splsoftclock();
1492 swp->nd_time = 0;
1493 LIST_INSERT_HEAD(&slp->ns_tq, swp, nd_tq);
1494 splx(s);
1495 goto loop1;
1496 }
1497 splx(s);
1498
1499 /*
1500 * Search for a reply to return.
1501 */
1502 s = splsoftclock();
1503 for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = nfsd->nd_tq.le_next)
1504 if (nfsd->nd_mreq) {
1505 NFS_DPF(WG, ("X%03x", nfsd->nd_retxid & 0xfff));
1506 LIST_REMOVE(nfsd, nd_tq);
1507 *mrq = nfsd->nd_mreq;
1508 *ndp = nfsd;
1509 break;
1510 }
1511 splx(s);
1512 return (0);
1513}
1514
1515/*
1516 * Coalesce the write request nfsd into owp. To do this we must:
1517 * - remove nfsd from the queues
1518 * - merge nfsd->nd_mrep into owp->nd_mrep
1519 * - update the nd_eoff and nd_stable for owp
1520 * - put nfsd on owp's nd_coalesce list
1521 * NB: Must be called at splsoftclock().
1522 */
1523static void
dadab5e9 1524nfsrvw_coalesce(struct nfsrv_descript *owp, struct nfsrv_descript *nfsd)
984263bc 1525{
dadab5e9
MD
1526 int overlap;
1527 struct mbuf *mp;
984263bc
MD
1528 struct nfsrv_descript *p;
1529
1530 NFS_DPF(WG, ("C%03x-%03x",
1531 nfsd->nd_retxid & 0xfff, owp->nd_retxid & 0xfff));
1532 LIST_REMOVE(nfsd, nd_hash);
1533 LIST_REMOVE(nfsd, nd_tq);
1534 if (owp->nd_eoff < nfsd->nd_eoff) {
1535 overlap = owp->nd_eoff - nfsd->nd_off;
1536 if (overlap < 0)
1537 panic("nfsrv_coalesce: bad off");
1538 if (overlap > 0)
1539 m_adj(nfsd->nd_mrep, overlap);
1540 mp = owp->nd_mrep;
1541 while (mp->m_next)
1542 mp = mp->m_next;
1543 mp->m_next = nfsd->nd_mrep;
1544 owp->nd_eoff = nfsd->nd_eoff;
1545 } else
1546 m_freem(nfsd->nd_mrep);
1547 nfsd->nd_mrep = NULL;
1548 if (nfsd->nd_stable == NFSV3WRITE_FILESYNC)
1549 owp->nd_stable = NFSV3WRITE_FILESYNC;
1550 else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC &&
1551 owp->nd_stable == NFSV3WRITE_UNSTABLE)
1552 owp->nd_stable = NFSV3WRITE_DATASYNC;
1553 LIST_INSERT_HEAD(&owp->nd_coalesce, nfsd, nd_tq);
1554
1555 /*
1556 * If nfsd had anything else coalesced into it, transfer them
1557 * to owp, otherwise their replies will never get sent.
1558 */
1559 for (p = nfsd->nd_coalesce.lh_first; p;
1560 p = nfsd->nd_coalesce.lh_first) {
1561 LIST_REMOVE(p, nd_tq);
1562 LIST_INSERT_HEAD(&owp->nd_coalesce, p, nd_tq);
1563 }
1564}
1565
1566/*
1567 * nfs create service
1568 * now does a truncate to 0 length via. setattr if it already exists
1569 */
1570int
e851b29e
CP
1571nfsrv_create(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1572 struct thread *td, struct mbuf **mrq)
984263bc
MD
1573{
1574 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1575 struct sockaddr *nam = nfsd->nd_nam;
1576 caddr_t dpos = nfsd->nd_dpos;
1577 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 1578 struct nfs_fattr *fp;
984263bc 1579 struct vattr va, dirfor, diraft;
dadab5e9
MD
1580 struct vattr *vap = &va;
1581 struct nfsv2_sattr *sp;
1582 u_int32_t *tl;
984263bc 1583 struct nameidata nd;
dadab5e9 1584 int32_t t1;
984263bc
MD
1585 caddr_t bpos;
1586 int error = 0, rdev, cache, len, tsize, dirfor_ret = 1, diraft_ret = 1;
1587 int v3 = (nfsd->nd_flag & ND_NFSV3), how, exclusive_flag = 0;
1588 caddr_t cp;
1589 char *cp2;
1590 struct mbuf *mb, *mb2, *mreq;
1591 struct vnode *dirp = (struct vnode *)0;
1592 nfsfh_t nfh;
1593 fhandle_t *fhp;
1594 u_quad_t frev, tempsize;
1595 u_char cverf[NFSX_V3CREATEVERF];
1596
1597 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
1598#ifndef nolint
1599 rdev = 0;
1600#endif
1601 ndclear(&nd);
1602
1603 fhp = &nfh.fh_generic;
1604 nfsm_srvmtofh(fhp);
1605 nfsm_srvnamesiz(len);
1606
1607 nd.ni_cnd.cn_cred = cred;
2b69e610
MD
1608 nd.ni_cnd.cn_nameiop = NAMEI_CREATE;
1609 nd.ni_cnd.cn_flags = CNP_LOCKPARENT | CNP_LOCKLEAF | CNP_SAVESTART;
984263bc
MD
1610
1611 /*
1612 * Call namei and do initial cleanup to get a few things
1613 * out of the way. If we get an initial error we cleanup
1614 * and return here to avoid special-casing the invalid nd
1615 * structure through the rest of the case. dirp may be
1616 * set even if an error occurs, but the nd structure will not
1617 * be valid at all if an error occurs so we have to invalidate it
1618 * prior to calling nfsm_reply ( which might goto nfsmout ).
1619 */
1620 error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
dadab5e9 1621 &dirp, td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc
MD
1622 if (dirp) {
1623 if (v3) {
3b568787 1624 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
1625 } else {
1626 vrele(dirp);
1627 dirp = NULL;
1628 }
1629 }
1630 if (error) {
1631 nfsm_reply(NFSX_WCCDATA(v3));
1632 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1633 error = 0;
1634 goto nfsmout;
1635 }
1636
1637 /*
1638 * No error. Continue. State:
1639 *
1640 * startdir is valid ( we release this immediately )
1641 * dirp may be valid
1642 * nd.ni_vp may be valid
1643 * nd.ni_dvp is valid
1644 *
1645 * The error state is set through the code and we may also do some
1646 * opportunistic releasing of vnodes to avoid holding locks through
1647 * NFS I/O. The cleanup at the end is a catch-all
1648 */
1649
1650 VATTR_NULL(vap);
1651 if (v3) {
1652 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
1653 how = fxdr_unsigned(int, *tl);
1654 switch (how) {
1655 case NFSV3CREATE_GUARDED:
1656 if (nd.ni_vp) {
1657 error = EEXIST;
1658 break;
1659 }
1660 /* fall through */
1661 case NFSV3CREATE_UNCHECKED:
1662 nfsm_srvsattr(vap);
1663 break;
1664 case NFSV3CREATE_EXCLUSIVE:
1665 nfsm_dissect(cp, caddr_t, NFSX_V3CREATEVERF);
1666 bcopy(cp, cverf, NFSX_V3CREATEVERF);
1667 exclusive_flag = 1;
1668 break;
1669 };
1670 vap->va_type = VREG;
1671 } else {
1672 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
1673 vap->va_type = IFTOVT(fxdr_unsigned(u_int32_t, sp->sa_mode));
1674 if (vap->va_type == VNON)
1675 vap->va_type = VREG;
1676 vap->va_mode = nfstov_mode(sp->sa_mode);
1677 switch (vap->va_type) {
1678 case VREG:
1679 tsize = fxdr_unsigned(int32_t, sp->sa_size);
1680 if (tsize != -1)
1681 vap->va_size = (u_quad_t)tsize;
1682 break;
1683 case VCHR:
1684 case VBLK:
1685 case VFIFO:
1686 rdev = fxdr_unsigned(long, sp->sa_size);
1687 break;
1688 default:
1689 break;
1690 };
1691 }
1692
1693 /*
1694 * Iff doesn't exist, create it
1695 * otherwise just truncate to 0 length
1696 * should I set the mode too ?
1697 *
1698 * The only possible error we can have at this point is EEXIST.
1699 * nd.ni_vp will also be non-NULL in that case.
1700 */
1701 if (nd.ni_vp == NULL) {
1702 if (vap->va_mode == (mode_t)VNOVAL)
1703 vap->va_mode = 0;
1704 if (vap->va_type == VREG || vap->va_type == VSOCK) {
1705 nqsrv_getl(nd.ni_dvp, ND_WRITE);
bc0c094e
MD
1706 error = VOP_CREATE(nd.ni_dvp, NCPNULL, &nd.ni_vp,
1707 &nd.ni_cnd, vap);
984263bc
MD
1708 if (error)
1709 NDFREE(&nd, NDF_ONLY_PNBUF);
1710 else {
1711 nfsrv_object_create(nd.ni_vp);
1712 if (exclusive_flag) {
1713 exclusive_flag = 0;
1714 VATTR_NULL(vap);
1715 bcopy(cverf, (caddr_t)&vap->va_atime,
1716 NFSX_V3CREATEVERF);
1717 error = VOP_SETATTR(nd.ni_vp, vap, cred,
dadab5e9 1718 td);
984263bc
MD
1719 }
1720 }
1721 } else if (
1722 vap->va_type == VCHR ||
1723 vap->va_type == VBLK ||
1724 vap->va_type == VFIFO
1725 ) {
1726 /*
1727 * Handle SysV FIFO node special cases. All other
1728 * devices require super user to access.
1729 */
1730 if (vap->va_type == VCHR && rdev == 0xffffffff)
1731 vap->va_type = VFIFO;
1732 if (vap->va_type != VFIFO &&
dadab5e9 1733 (error = suser_cred(cred, 0))) {
984263bc
MD
1734 goto nfsmreply0;
1735 }
1736 vap->va_rdev = rdev;
1737 nqsrv_getl(nd.ni_dvp, ND_WRITE);
1738
bc0c094e
MD
1739 error = VOP_MKNOD(nd.ni_dvp, NCPNULL, &nd.ni_vp,
1740 &nd.ni_cnd, vap);
984263bc
MD
1741 if (error) {
1742 NDFREE(&nd, NDF_ONLY_PNBUF);
1743 goto nfsmreply0;
1744 }
1745 vput(nd.ni_vp);
1746 nd.ni_vp = NULL;
1747
1748 /*
1749 * release dvp prior to lookup
1750 */
1751 vput(nd.ni_dvp);
1752 nd.ni_dvp = NULL;
1753
1754 /*
1755 * Setup for lookup.
1756 *
1757 * Even though LOCKPARENT was cleared, ni_dvp may
1758 * be garbage.
1759 */
2b69e610
MD
1760 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
1761 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT);
dadab5e9 1762 nd.ni_cnd.cn_td = td;
984263bc
MD
1763 nd.ni_cnd.cn_cred = cred;
1764
1765 error = lookup(&nd);
1766 nd.ni_dvp = NULL;
1767
1768 if (error != 0) {
1769 nfsm_reply(0);
1770 /* fall through on certain errors */
1771 }
1772 nfsrv_object_create(nd.ni_vp);
2b69e610 1773 if (nd.ni_cnd.cn_flags & CNP_ISSYMLINK) {
984263bc
MD
1774 error = EINVAL;
1775 goto nfsmreply0;
1776 }
1777 } else {
1778 error = ENXIO;
1779 }
1780 } else {
1781 if (vap->va_size != -1) {
1782 error = nfsrv_access(nd.ni_vp, VWRITE, cred,
2b69e610 1783 (nd.ni_cnd.cn_flags & CNP_RDONLY), td, 0);
984263bc
MD
1784 if (!error) {
1785 nqsrv_getl(nd.ni_vp, ND_WRITE);
1786 tempsize = vap->va_size;
1787 VATTR_NULL(vap);
1788 vap->va_size = tempsize;
dadab5e9 1789 error = VOP_SETATTR(nd.ni_vp, vap, cred, td);
984263bc
MD
1790 }
1791 }
1792 }
1793
1794 if (!error) {
1795 bzero((caddr_t)fhp, sizeof(nfh));
1796 fhp->fh_fsid = nd.ni_vp->v_mount->mnt_stat.f_fsid;
1797 error = VFS_VPTOFH(nd.ni_vp, &fhp->fh_fid);
1798 if (!error)
3b568787 1799 error = VOP_GETATTR(nd.ni_vp, vap, td);
984263bc
MD
1800 }
1801 if (v3) {
1802 if (exclusive_flag && !error &&
1803 bcmp(cverf, (caddr_t)&vap->va_atime, NFSX_V3CREATEVERF))
1804 error = EEXIST;
3b568787 1805 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
1806 vrele(dirp);
1807 dirp = NULL;
1808 }
1809 nfsm_reply(NFSX_SRVFH(v3) + NFSX_FATTR(v3) + NFSX_WCCDATA(v3));
1810 if (v3) {
1811 if (!error) {
1812 nfsm_srvpostop_fh(fhp);
1813 nfsm_srvpostop_attr(0, vap);
1814 }
1815 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1816 error = 0;
1817 } else {
1818 nfsm_srvfhtom(fhp, v3);
1819 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1820 nfsm_srvfillattr(vap, fp);
1821 }
1822 goto nfsmout;
1823
1824nfsmreply0:
1825 nfsm_reply(0);
1826 error = 0;
1827 /* fall through */
1828
1829nfsmout:
1830 if (nd.ni_startdir) {
1831 vrele(nd.ni_startdir);
1832 nd.ni_startdir = NULL;
1833 }
1834 if (dirp)
1835 vrele(dirp);
1836 NDFREE(&nd, NDF_ONLY_PNBUF);
1837 if (nd.ni_dvp) {
1838 if (nd.ni_dvp == nd.ni_vp)
1839 vrele(nd.ni_dvp);
1840 else
1841 vput(nd.ni_dvp);
1842 }
1843 if (nd.ni_vp)
1844 vput(nd.ni_vp);
1845 return (error);
1846}
1847
1848/*
1849 * nfs v3 mknod service
1850 */
1851int
e851b29e
CP
1852nfsrv_mknod(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1853 struct thread *td, struct mbuf **mrq)
984263bc
MD
1854{
1855 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1856 struct sockaddr *nam = nfsd->nd_nam;
1857 caddr_t dpos = nfsd->nd_dpos;
1858 struct ucred *cred = &nfsd->nd_cr;
1859 struct vattr va, dirfor, diraft;
dadab5e9
MD
1860 struct vattr *vap = &va;
1861 u_int32_t *tl;
984263bc 1862 struct nameidata nd;
dadab5e9 1863 int32_t t1;
984263bc
MD
1864 caddr_t bpos;
1865 int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
1866 u_int32_t major, minor;
1867 enum vtype vtyp;
1868 char *cp2;
1869 struct mbuf *mb, *mb2, *mreq;
1870 struct vnode *vp, *dirp = (struct vnode *)0;
1871 nfsfh_t nfh;
1872 fhandle_t *fhp;
1873 u_quad_t frev;
1874
1875 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
1876 ndclear(&nd);
1877
1878 fhp = &nfh.fh_generic;
1879 nfsm_srvmtofh(fhp);
1880 nfsm_srvnamesiz(len);
1881
1882 nd.ni_cnd.cn_cred = cred;
2b69e610
MD
1883 nd.ni_cnd.cn_nameiop = NAMEI_CREATE;
1884 nd.ni_cnd.cn_flags = CNP_LOCKPARENT | CNP_LOCKLEAF | CNP_SAVESTART;
984263bc
MD
1885
1886 /*
1887 * Handle nfs_namei() call. If an error occurs, the nd structure
1888 * is not valid. However, nfsm_*() routines may still jump to
1889 * nfsmout.
1890 */
1891
1892 error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
dadab5e9 1893 &dirp, td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 1894 if (dirp)
3b568787 1895 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
1896 if (error) {
1897 nfsm_reply(NFSX_WCCDATA(1));
1898 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1899 error = 0;
1900 goto nfsmout;
1901 }
1902 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
1903 vtyp = nfsv3tov_type(*tl);
1904 if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) {
1905 error = NFSERR_BADTYPE;
1906 goto out;
1907 }
1908 VATTR_NULL(vap);
1909 nfsm_srvsattr(vap);
1910 if (vtyp == VCHR || vtyp == VBLK) {
1911 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1912 major = fxdr_unsigned(u_int32_t, *tl++);
1913 minor = fxdr_unsigned(u_int32_t, *tl);
1914 vap->va_rdev = makeudev(major, minor);
1915 }
1916
1917 /*
1918 * Iff doesn't exist, create it.
1919 */
1920 if (nd.ni_vp) {
1921 error = EEXIST;
1922 goto out;
1923 }
1924 vap->va_type = vtyp;
1925 if (vap->va_mode == (mode_t)VNOVAL)
1926 vap->va_mode = 0;
1927 if (vtyp == VSOCK) {
1928 vrele(nd.ni_startdir);
1929 nd.ni_startdir = NULL;
1930 nqsrv_getl(nd.ni_dvp, ND_WRITE);
bc0c094e
MD
1931 error = VOP_CREATE(nd.ni_dvp, NCPNULL, &nd.ni_vp,
1932 &nd.ni_cnd, vap);
984263bc
MD
1933 if (error)
1934 NDFREE(&nd, NDF_ONLY_PNBUF);
1935 } else {
dadab5e9 1936 if (vtyp != VFIFO && (error = suser_cred(cred, 0)))
984263bc
MD
1937 goto out;
1938 nqsrv_getl(nd.ni_dvp, ND_WRITE);
1939
bc0c094e
MD
1940 error = VOP_MKNOD(nd.ni_dvp, NCPNULL, &nd.ni_vp,
1941 &nd.ni_cnd, vap);
984263bc
MD
1942 if (error) {
1943 NDFREE(&nd, NDF_ONLY_PNBUF);
1944 goto out;
1945 }
1946 vput(nd.ni_vp);
1947 nd.ni_vp = NULL;
1948
1949 /*
1950 * Release dvp prior to lookup
1951 */
1952 vput(nd.ni_dvp);
1953 nd.ni_dvp = NULL;
1954
dadab5e9 1955 KKASSERT(td->td_proc);
2b69e610
MD
1956 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
1957 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT);
dadab5e9
MD
1958 nd.ni_cnd.cn_td = td;
1959 nd.ni_cnd.cn_cred = td->td_proc->p_ucred;
984263bc
MD
1960
1961 error = lookup(&nd);
1962 nd.ni_dvp = NULL;
1963
1964 if (error)
1965 goto out;
2b69e610 1966 if (nd.ni_cnd.cn_flags & CNP_ISSYMLINK)
984263bc
MD
1967 error = EINVAL;
1968 }
1969
1970 /*
1971 * send response, cleanup, return.
1972 */
1973out:
1974 if (nd.ni_startdir) {
1975 vrele(nd.ni_startdir);
1976 nd.ni_startdir = NULL;
1977 }
1978 NDFREE(&nd, NDF_ONLY_PNBUF);
1979 if (nd.ni_dvp) {
1980 if (nd.ni_dvp == nd.ni_vp)
1981 vrele(nd.ni_dvp);
1982 else
1983 vput(nd.ni_dvp);
1984 nd.ni_dvp = NULL;
1985 }
1986 vp = nd.ni_vp;
1987 if (!error) {
1988 bzero((caddr_t)fhp, sizeof(nfh));
1989 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1990 error = VFS_VPTOFH(vp, &fhp->fh_fid);
1991 if (!error)
3b568787 1992 error = VOP_GETATTR(vp, vap, td);
984263bc
MD
1993 }
1994 if (vp) {
1995 vput(vp);
1996 vp = NULL;
1997 nd.ni_vp = NULL;
1998 }
3b568787 1999 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2000 if (dirp) {
2001 vrele(dirp);
2002 dirp = NULL;
2003 }
2004 nfsm_reply(NFSX_SRVFH(1) + NFSX_POSTOPATTR(1) + NFSX_WCCDATA(1));
2005 if (!error) {
2006 nfsm_srvpostop_fh(fhp);
2007 nfsm_srvpostop_attr(0, vap);
2008 }
2009 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2010 return (0);
2011nfsmout:
2012 if (dirp)
2013 vrele(dirp);
2014 if (nd.ni_startdir)
2015 vrele(nd.ni_startdir);
2016 NDFREE(&nd, NDF_ONLY_PNBUF);
2017 if (nd.ni_dvp) {
2018 if (nd.ni_dvp == nd.ni_vp)
2019 vrele(nd.ni_dvp);
2020 else
2021 vput(nd.ni_dvp);
2022 }
2023 if (nd.ni_vp)
2024 vput(nd.ni_vp);
2025 return (error);
2026}
2027
2028/*
2029 * nfs remove service
2030 */
2031int
e851b29e
CP
2032nfsrv_remove(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2033 struct thread *td, struct mbuf **mrq)
984263bc
MD
2034{
2035 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2036 struct sockaddr *nam = nfsd->nd_nam;
2037 caddr_t dpos = nfsd->nd_dpos;
2038 struct ucred *cred = &nfsd->nd_cr;
2039 struct nameidata nd;
dadab5e9
MD
2040 u_int32_t *tl;
2041 int32_t t1;
984263bc
MD
2042 caddr_t bpos;
2043 int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
2044 int v3 = (nfsd->nd_flag & ND_NFSV3);
2045 char *cp2;
2046 struct mbuf *mb, *mreq;
2047 struct vnode *dirp;
2048 struct vattr dirfor, diraft;
2049 nfsfh_t nfh;
2050 fhandle_t *fhp;
2051 u_quad_t frev;
2052
2053 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2054 ndclear(&nd);
2055
2056 fhp = &nfh.fh_generic;
2057 nfsm_srvmtofh(fhp);
2058 nfsm_srvnamesiz(len);
2059
2060 nd.ni_cnd.cn_cred = cred;
2b69e610
MD
2061 nd.ni_cnd.cn_nameiop = NAMEI_DELETE;
2062 nd.ni_cnd.cn_flags = CNP_LOCKPARENT | CNP_LOCKLEAF;
984263bc 2063 error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
dadab5e9 2064 &dirp, td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc
MD
2065 if (dirp) {
2066 if (v3) {
3b568787 2067 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2068 } else {
2069 vrele(dirp);
2070 dirp = NULL;
2071 }
2072 }
2073 if (error == 0) {
2074 if (nd.ni_vp->v_type == VDIR) {
2075 error = EPERM; /* POSIX */
2076 goto out;
2077 }
2078 /*
2079 * The root of a mounted filesystem cannot be deleted.
2080 */
2081 if (nd.ni_vp->v_flag & VROOT) {
2082 error = EBUSY;
2083 goto out;
2084 }
2085out:
2086 if (!error) {
2087 nqsrv_getl(nd.ni_dvp, ND_WRITE);
2088 nqsrv_getl(nd.ni_vp, ND_WRITE);
bc0c094e 2089 error = VOP_REMOVE(nd.ni_dvp, NCPNULL, nd.ni_vp, &nd.ni_cnd);
b8997912
MD
2090 if (error == 0)
2091 cache_purge(nd.ni_vp);
984263bc
MD
2092 NDFREE(&nd, NDF_ONLY_PNBUF);
2093 }
2094 }
2095 if (dirp && v3) {
3b568787 2096 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2097 vrele(dirp);
2098 dirp = NULL;
2099 }
2100 nfsm_reply(NFSX_WCCDATA(v3));
2101 if (v3) {
2102 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2103 error = 0;
2104 }
2105nfsmout:
2106 NDFREE(&nd, NDF_ONLY_PNBUF);
2107 if (nd.ni_dvp) {
2108 if (nd.ni_dvp == nd.ni_vp)
2109 vrele(nd.ni_dvp);
2110 else
2111 vput(nd.ni_dvp);
2112 }
2113 if (nd.ni_vp)
2114 vput(nd.ni_vp);
2115 return(error);
2116}
2117
2118/*
2119 * nfs rename service
2120 */
2121int
e851b29e
CP
2122nfsrv_rename(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2123 struct thread *td, struct mbuf **mrq)
984263bc
MD
2124{
2125 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2126 struct sockaddr *nam = nfsd->nd_nam;
2127 caddr_t dpos = nfsd->nd_dpos;
2128 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2129 u_int32_t *tl;
2130 int32_t t1;
984263bc
MD
2131 caddr_t bpos;
2132 int error = 0, cache, len, len2, fdirfor_ret = 1, fdiraft_ret = 1;
2133 int tdirfor_ret = 1, tdiraft_ret = 1;
2134 int v3 = (nfsd->nd_flag & ND_NFSV3);
2135 char *cp2;
2136 struct mbuf *mb, *mreq;
2137 struct nameidata fromnd, tond;
2138 struct vnode *fvp, *tvp, *tdvp, *fdirp = (struct vnode *)0;
2139 struct vnode *tdirp = (struct vnode *)0;
2140 struct vattr fdirfor, fdiraft, tdirfor, tdiraft;
2141 nfsfh_t fnfh, tnfh;
2142 fhandle_t *ffhp, *tfhp;
2143 u_quad_t frev;
2144 uid_t saved_uid;
2145
2146 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2147#ifndef nolint
2148 fvp = (struct vnode *)0;
2149#endif
2150 ffhp = &fnfh.fh_generic;
2151 tfhp = &tnfh.fh_generic;
2152
2153 /*
2154 * Clear fields incase goto nfsmout occurs from macro.
2155 */
2156
2157 ndclear(&fromnd);
2158 ndclear(&tond);
2159
2160 nfsm_srvmtofh(ffhp);
2161 nfsm_srvnamesiz(len);
2162 /*
2163 * Remember our original uid so that we can reset cr_uid before
2164 * the second nfs_namei() call, in case it is remapped.
2165 */
2166 saved_uid = cred->cr_uid;
2167 fromnd.ni_cnd.cn_cred = cred;
2b69e610
MD
2168 fromnd.ni_cnd.cn_nameiop = NAMEI_DELETE;
2169 fromnd.ni_cnd.cn_flags = CNP_WANTPARENT | CNP_SAVESTART;
984263bc 2170 error = nfs_namei(&fromnd, ffhp, len, slp, nam, &md,
dadab5e9 2171 &dpos, &fdirp, td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc
MD
2172 if (fdirp) {
2173 if (v3) {
3b568787 2174 fdirfor_ret = VOP_GETATTR(fdirp, &fdirfor, td);
984263bc
MD
2175 } else {
2176 vrele(fdirp);
2177 fdirp = NULL;
2178 }
2179 }
2180 if (error) {
2181 nfsm_reply(2 * NFSX_WCCDATA(v3));
2182 nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
2183 nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
2184 error = 0;
2185 goto nfsmout;
2186 }
2187 fvp = fromnd.ni_vp;
2188 nfsm_srvmtofh(tfhp);
2189 nfsm_strsiz(len2, NFS_MAXNAMLEN);
2190 cred->cr_uid = saved_uid;
2191 tond.ni_cnd.cn_cred = cred;
2b69e610
MD
2192 tond.ni_cnd.cn_nameiop = NAMEI_RENAME;
2193 tond.ni_cnd.cn_flags = CNP_LOCKPARENT | CNP_LOCKLEAF |
2194 CNP_NOCACHE | CNP_SAVESTART;
984263bc 2195 error = nfs_namei(&tond, tfhp, len2, slp, nam, &md,
dadab5e9 2196 &dpos, &tdirp, td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc
MD
2197 if (tdirp) {
2198 if (v3) {
3b568787 2199 tdirfor_ret = VOP_GETATTR(tdirp, &tdirfor, td);
984263bc
MD
2200 } else {
2201 vrele(tdirp);
2202 tdirp = NULL;
2203 }
2204 }
2205 if (error)
2206 goto out1;
2207
2208 tdvp = tond.ni_dvp;
2209 tvp = tond.ni_vp;
2210 if (tvp != NULL) {
2211 if (fvp->v_type == VDIR && tvp->v_type != VDIR) {
2212 if (v3)
2213 error = EEXIST;
2214 else
2215 error = EISDIR;
2216 goto out;
2217 } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) {
2218 if (v3)
2219 error = EEXIST;
2220 else
2221 error = ENOTDIR;
2222 goto out;
2223 }
2224 if (tvp->v_type == VDIR && tvp->v_mountedhere) {
2225 if (v3)
2226 error = EXDEV;
2227 else
2228 error = ENOTEMPTY;
2229 goto out;
2230 }
2231 }
2232 if (fvp->v_type == VDIR && fvp->v_mountedhere) {
2233 if (v3)
2234 error = EXDEV;
2235 else
2236 error = ENOTEMPTY;
2237 goto out;
2238 }
2239 if (fvp->v_mount != tdvp->v_mount) {
2240 if (v3)
2241 error = EXDEV;
2242 else
2243 error = ENOTEMPTY;
2244 goto out;
2245 }
2246 if (fvp == tdvp) {
2247 if (v3)
2248 error = EINVAL;
2249 else
2250 error = ENOTEMPTY;
2251 }
2252 /*
2253 * If source is the same as the destination (that is the
2254 * same vnode with the same name in the same directory),
2255 * then there is nothing to do.
2256 */
2257 if (fvp == tvp && fromnd.ni_dvp == tdvp &&
2258 fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen &&
2259 !bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr,
2260 fromnd.ni_cnd.cn_namelen))
2261 error = -1;
2262out:
2263 if (!error) {
2264 /*
2265 * The VOP_RENAME function releases all vnode references &
2266 * locks prior to returning so we need to clear the pointers
2267 * to bypass cleanup code later on.
2268 */
2269 nqsrv_getl(fromnd.ni_dvp, ND_WRITE);
2270 nqsrv_getl(tdvp, ND_WRITE);
2271 if (tvp) {
2272 nqsrv_getl(tvp, ND_WRITE);
2273 }
bc0c094e
MD
2274 error = VOP_RENAME(fromnd.ni_dvp, NCPNULL, fromnd.ni_vp, &fromnd.ni_cnd,
2275 tond.ni_dvp, NCPNULL, tond.ni_vp, &tond.ni_cnd);
b8997912
MD
2276 if (error == 0)
2277 cache_purge(fromnd.ni_vp);
984263bc
MD
2278 fromnd.ni_dvp = NULL;
2279 fromnd.ni_vp = NULL;
2280 tond.ni_dvp = NULL;
2281 tond.ni_vp = NULL;
2282 if (error) {
2b69e610
MD
2283 fromnd.ni_cnd.cn_flags &= ~CNP_HASBUF;
2284 tond.ni_cnd.cn_flags &= ~CNP_HASBUF;
984263bc
MD
2285 }
2286 } else {
2287 if (error == -1)
2288 error = 0;
2289 }
2290 /* fall through */
2291
2292out1:
2293 if (fdirp)
3b568787 2294 fdiraft_ret = VOP_GETATTR(fdirp, &fdiraft, td);
984263bc 2295 if (tdirp)
3b568787 2296 tdiraft_ret = VOP_GETATTR(tdirp, &tdiraft, td);
984263bc
MD
2297 nfsm_reply(2 * NFSX_WCCDATA(v3));
2298 if (v3) {
2299 nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
2300 nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
2301 }
2302 error = 0;
2303 /* fall through */
2304
2305nfsmout:
2306 /*
2307 * Clear out tond related fields
2308 */
2309 if (tdirp)
2310 vrele(tdirp);
2311 if (tond.ni_startdir)
2312 vrele(tond.ni_startdir);
2313 NDFREE(&tond, NDF_ONLY_PNBUF);
2314 if (tond.ni_dvp) {
2315 if (tond.ni_dvp == tond.ni_vp)
2316 vrele(tond.ni_dvp);
2317 else
2318 vput(tond.ni_dvp);
2319 }
2320 if (tond.ni_vp)
2321 vput(tond.ni_vp);
2322
2323 /*
2324 * Clear out fromnd related fields
2325 */
2326 if (fdirp)
2327 vrele(fdirp);
2328 if (fromnd.ni_startdir)
2329 vrele(fromnd.ni_startdir);
2330 NDFREE(&fromnd, NDF_ONLY_PNBUF);
2331 if (fromnd.ni_dvp)
2332 vrele(fromnd.ni_dvp);
2333 if (fromnd.ni_vp)
2334 vrele(fromnd.ni_vp);
2335
2336 return (error);
2337}
2338
2339/*
2340 * nfs link service
2341 */
2342int
e851b29e
CP
2343nfsrv_link(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2344 struct thread *td, struct mbuf **mrq)
984263bc
MD
2345{
2346 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2347 struct sockaddr *nam = nfsd->nd_nam;
2348 caddr_t dpos = nfsd->nd_dpos;
2349 struct ucred *cred = &nfsd->nd_cr;
2350 struct nameidata nd;
dadab5e9
MD
2351 u_int32_t *tl;
2352 int32_t t1;
984263bc
MD
2353 caddr_t bpos;
2354 int error = 0, rdonly, cache, len, dirfor_ret = 1, diraft_ret = 1;
2355 int getret = 1, v3 = (nfsd->nd_flag & ND_NFSV3);
2356 char *cp2;
2357 struct mbuf *mb, *mreq;
2358 struct vnode *vp = NULL, *xp, *dirp = (struct vnode *)0;
2359 struct vattr dirfor, diraft, at;
2360 nfsfh_t nfh, dnfh;
2361 fhandle_t *fhp, *dfhp;
2362 u_quad_t frev;
2363
2364 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2365 ndclear(&nd);
2366
2367 fhp = &nfh.fh_generic;
2368 dfhp = &dnfh.fh_generic;
2369 nfsm_srvmtofh(fhp);
2370 nfsm_srvmtofh(dfhp);
2371 nfsm_srvnamesiz(len);
2372
2373 error = nfsrv_fhtovp(fhp, FALSE, &vp, cred, slp, nam,
2374 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
2375 if (error) {
2376 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2377 nfsm_srvpostop_attr(getret, &at);
2378 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2379 vp = NULL;
2380 error = 0;
2381 goto nfsmout;
2382 }
2383 if (vp->v_type == VDIR) {
2384 error = EPERM; /* POSIX */
2385 goto out1;
2386 }
2387 nd.ni_cnd.cn_cred = cred;
2b69e610
MD
2388 nd.ni_cnd.cn_nameiop = NAMEI_CREATE;
2389 nd.ni_cnd.cn_flags = CNP_LOCKPARENT;
984263bc 2390 error = nfs_namei(&nd, dfhp, len, slp, nam, &md, &dpos,
dadab5e9 2391 &dirp, td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc
MD
2392 if (dirp) {
2393 if (v3) {
3b568787 2394 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2395 } else {
2396 vrele(dirp);
2397 dirp = NULL;
2398 }
2399 }
2400 if (error)
2401 goto out1;
2402
2403 xp = nd.ni_vp;
2404 if (xp != NULL) {
2405 error = EEXIST;
2406 goto out;
2407 }
2408 xp = nd.ni_dvp;
2409 if (vp->v_mount != xp->v_mount)
2410 error = EXDEV;
2411out:
2412 if (!error) {
2413 nqsrv_getl(vp, ND_WRITE);
2414 nqsrv_getl(xp, ND_WRITE);
bc0c094e 2415 error = VOP_LINK(nd.ni_dvp, NCPNULL, vp, &nd.ni_cnd);
984263bc
MD
2416 NDFREE(&nd, NDF_ONLY_PNBUF);
2417 }
2418 /* fall through */
2419
2420out1:
2421 if (v3)
3b568787 2422 getret = VOP_GETATTR(vp, &at, td);
984263bc 2423 if (dirp)
3b568787 2424 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2425 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2426 if (v3) {
2427 nfsm_srvpostop_attr(getret, &at);
2428 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2429 error = 0;
2430 }
2431 /* fall through */
2432
2433nfsmout:
2434 NDFREE(&nd, NDF_ONLY_PNBUF);
2435 if (dirp)
2436 vrele(dirp);
2437 if (vp)
2438 vrele(vp);
2439 if (nd.ni_dvp) {
2440 if (nd.ni_dvp == nd.ni_vp)
2441 vrele(nd.ni_dvp);
2442 else
2443 vput(nd.ni_dvp);
2444 }
2445 if (nd.ni_vp)
2446 vrele(nd.ni_vp);
2447 return(error);
2448}
2449
2450/*
2451 * nfs symbolic link service
2452 */
2453int
e851b29e
CP
2454nfsrv_symlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2455 struct thread *td, struct mbuf **mrq)
984263bc
MD
2456{
2457 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2458 struct sockaddr *nam = nfsd->nd_nam;
2459 caddr_t dpos = nfsd->nd_dpos;
2460 struct ucred *cred = &nfsd->nd_cr;
2461 struct vattr va, dirfor, diraft;
2462 struct nameidata nd;
dadab5e9
MD
2463 struct vattr *vap = &va;
2464 u_int32_t *tl;
2465 int32_t t1;
984263bc
MD
2466 struct nfsv2_sattr *sp;
2467 char *bpos, *pathcp = (char *)0, *cp2;
2468 struct uio io;
2469 struct iovec iv;
2470 int error = 0, cache, len, len2, dirfor_ret = 1, diraft_ret = 1;
2471 int v3 = (nfsd->nd_flag & ND_NFSV3);
2472 struct mbuf *mb, *mreq, *mb2;
2473 struct vnode *dirp = (struct vnode *)0;
2474 nfsfh_t nfh;
2475 fhandle_t *fhp;
2476 u_quad_t frev;
2477
2478 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2479 ndclear(&nd);
2480
2481 fhp = &nfh.fh_generic;
2482 nfsm_srvmtofh(fhp);
2483 nfsm_srvnamesiz(len);
2484 nd.ni_cnd.cn_cred = cred;
2b69e610
MD
2485 nd.ni_cnd.cn_nameiop = NAMEI_CREATE;
2486 nd.ni_cnd.cn_flags = CNP_LOCKPARENT | CNP_SAVESTART;
984263bc 2487 error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
dadab5e9 2488 &dirp, td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc
MD
2489 if (dirp) {
2490 if (v3) {
3b568787 2491 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2492 } else {
2493 vrele(dirp);
2494 dirp = NULL;
2495 }
2496 }
2497 if (error)
2498 goto out;
2499
2500 VATTR_NULL(vap);
2501 if (v3)
2502 nfsm_srvsattr(vap);
2503 nfsm_strsiz(len2, NFS_MAXPATHLEN);
2504 MALLOC(pathcp, caddr_t, len2 + 1, M_TEMP, M_WAITOK);
2505 iv.iov_base = pathcp;
2506 iv.iov_len = len2;
2507 io.uio_resid = len2;
2508 io.uio_offset = 0;
2509 io.uio_iov = &iv;
2510 io.uio_iovcnt = 1;
2511 io.uio_segflg = UIO_SYSSPACE;
2512 io.uio_rw = UIO_READ;
dadab5e9 2513 io.uio_td = NULL;
984263bc
MD
2514 nfsm_mtouio(&io, len2);
2515 if (!v3) {
2516 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
2517 vap->va_mode = nfstov_mode(sp->sa_mode);
2518 }
2519 *(pathcp + len2) = '\0';
2520 if (nd.ni_vp) {
2521 error = EEXIST;
2522 goto out;
2523 }
2524
2525 /*
2526 * issue symlink op. SAVESTART is set so the underlying path component
2527 * is only freed by the VOP if an error occurs.
2528 */
2529 if (vap->va_mode == (mode_t)VNOVAL)
2530 vap->va_mode = 0;
2531 nqsrv_getl(nd.ni_dvp, ND_WRITE);
bc0c094e 2532 error = VOP_SYMLINK(nd.ni_dvp, NCPNULL, &nd.ni_vp, &nd.ni_cnd, vap, pathcp);
984263bc
MD
2533 if (error)
2534 NDFREE(&nd, NDF_ONLY_PNBUF);
2535 else
2536 vput(nd.ni_vp);
2537 nd.ni_vp = NULL;
2538 /*
2539 * releases directory prior to potential lookup op.
2540 */
2541 vput(nd.ni_dvp);
2542 nd.ni_dvp = NULL;
2543
2544 if (error == 0) {
2545 if (v3) {
2546 /*
2547 * Issue lookup. Leave SAVESTART set so we can easily free
2548 * the name buffer later on.
2549 *
2550 * since LOCKPARENT is not set, ni_dvp will be garbage on
2551 * return whether an error occurs or not.
2552 */
2b69e610
MD
2553 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
2554 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT | CNP_FOLLOW);
6fc0e645 2555 nd.ni_cnd.cn_flags |= CNP_LOCKLEAF;
dadab5e9 2556 nd.ni_cnd.cn_td = td;
984263bc
MD
2557 nd.ni_cnd.cn_cred = cred;
2558
2559 error = lookup(&nd);
2560 nd.ni_dvp = NULL;
2561
2562 if (error == 0) {
2563 bzero((caddr_t)fhp, sizeof(nfh));
2564 fhp->fh_fsid = nd.ni_vp->v_mount->mnt_stat.f_fsid;
2565 error = VFS_VPTOFH(nd.ni_vp, &fhp->fh_fid);
2566 if (!error)
3b568787 2567 error = VOP_GETATTR(nd.ni_vp, vap, td);
984263bc
MD
2568 vput(nd.ni_vp);
2569 nd.ni_vp = NULL;
2570 }
2571 }
2572 }
2573out:
2574 /*
2575 * These releases aren't strictly required, does even doing them
2576 * make any sense? XXX can nfsm_reply() block?
2577 */
2578 if (pathcp) {
2579 FREE(pathcp, M_TEMP);
2580 pathcp = NULL;
2581 }
2582 if (dirp) {
3b568787 2583 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2584 vrele(dirp);
2585 dirp = NULL;
2586 }
2587 if (nd.ni_startdir) {
2588 vrele(nd.ni_startdir);
2589 nd.ni_startdir = NULL;
2590 }
2591 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2592 if (v3) {
2593 if (!error) {
2594 nfsm_srvpostop_fh(fhp);
2595 nfsm_srvpostop_attr(0, vap);
2596 }
2597 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2598 }
2599 error = 0;
2600 /* fall through */
2601
2602nfsmout:
2603 NDFREE(&nd, NDF_ONLY_PNBUF);
2604 if (nd.ni_dvp) {
2605 if (nd.ni_dvp == nd.ni_vp)
2606 vrele(nd.ni_dvp);
2607 else
2608 vput(nd.ni_dvp);
2609 }
2610 if (nd.ni_vp)
2611 vrele(nd.ni_vp);
2612 if (nd.ni_startdir)
2613 vrele(nd.ni_startdir);
2614 if (dirp)
2615 vrele(dirp);
2616 if (pathcp)
2617 FREE(pathcp, M_TEMP);
2618
2619 return (error);
2620}
2621
2622/*
2623 * nfs mkdir service
2624 */
2625int
e851b29e
CP
2626nfsrv_mkdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2627 struct thread *td, struct mbuf **mrq)
984263bc
MD
2628{
2629 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2630 struct sockaddr *nam = nfsd->nd_nam;
2631 caddr_t dpos = nfsd->nd_dpos;
2632 struct ucred *cred = &nfsd->nd_cr;
2633 struct vattr va, dirfor, diraft;
dadab5e9
MD
2634 struct vattr *vap = &va;
2635 struct nfs_fattr *fp;
984263bc 2636 struct nameidata nd;
dadab5e9
MD
2637 caddr_t cp;
2638 u_int32_t *tl;
2639 int32_t t1;
984263bc
MD
2640 caddr_t bpos;
2641 int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
2642 int v3 = (nfsd->nd_flag & ND_NFSV3);
2643 char *cp2;
2644 struct mbuf *mb, *mb2, *mreq;
2645 struct vnode *dirp = NULL;
2646 int vpexcl = 0;
2647 nfsfh_t nfh;
2648 fhandle_t *fhp;
2649 u_quad_t frev;
2650
2651 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2652 ndclear(&nd);
2653
2654 fhp = &nfh.fh_generic;
2655 nfsm_srvmtofh(fhp);
2656 nfsm_srvnamesiz(len);
2657 nd.ni_cnd.cn_cred = cred;
2b69e610
MD
2658 nd.ni_cnd.cn_nameiop = NAMEI_CREATE;
2659 nd.ni_cnd.cn_flags = CNP_LOCKPARENT;
984263bc
MD
2660
2661 error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
dadab5e9 2662 &dirp, td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc
MD
2663 if (dirp) {
2664 if (v3) {
3b568787 2665 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2666 } else {
2667 vrele(dirp);
2668 dirp = NULL;
2669 }
2670 }
2671 if (error) {
2672 nfsm_reply(NFSX_WCCDATA(v3));
2673 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2674 error = 0;
2675 goto nfsmout;
2676 }
2677 VATTR_NULL(vap);
2678 if (v3) {
2679 nfsm_srvsattr(vap);
2680 } else {
2681 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
2682 vap->va_mode = nfstov_mode(*tl++);
2683 }
2684
2685 /*
2686 * At this point nd.ni_dvp is referenced and exclusively locked and
2687 * nd.ni_vp, if it exists, is referenced but not locked.
2688 */
2689
2690 vap->va_type = VDIR;
2691 if (nd.ni_vp != NULL) {
2692 NDFREE(&nd, NDF_ONLY_PNBUF);
2693 error = EEXIST;
2694 goto out;
2695 }
2696
2697 /*
2698 * Issue mkdir op. Since SAVESTART is not set, the pathname
2699 * component is freed by the VOP call. This will fill-in
2700 * nd.ni_vp, reference, and exclusively lock it.
2701 */
2702 if (vap->va_mode == (mode_t)VNOVAL)
2703 vap->va_mode = 0;
2704 nqsrv_getl(nd.ni_dvp, ND_WRITE);
bc0c094e 2705 error = VOP_MKDIR(nd.ni_dvp, NCPNULL, &nd.ni_vp, &nd.ni_cnd, vap);
984263bc
MD
2706 NDFREE(&nd, NDF_ONLY_PNBUF);
2707 vpexcl = 1;
2708
2709 vput(nd.ni_dvp);
2710 nd.ni_dvp = NULL;
2711
2712 if (!error) {
2713 bzero((caddr_t)fhp, sizeof(nfh));
2714 fhp->fh_fsid = nd.ni_vp->v_mount->mnt_stat.f_fsid;
2715 error = VFS_VPTOFH(nd.ni_vp, &fhp->fh_fid);
2716 if (!error)
3b568787 2717 error = VOP_GETATTR(nd.ni_vp, vap, td);
984263bc
MD
2718 }
2719out:
2720 if (dirp)
3b568787 2721 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2722 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2723 if (v3) {
2724 if (!error) {
2725 nfsm_srvpostop_fh(fhp);
2726 nfsm_srvpostop_attr(0, vap);
2727 }
2728 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2729 } else {
2730 nfsm_srvfhtom(fhp, v3);
2731 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
2732 nfsm_srvfillattr(vap, fp);
2733 }
2734 error = 0;
2735 /* fall through */
2736
2737nfsmout:
2738 if (dirp)
2739 vrele(dirp);
2740 if (nd.ni_dvp) {
2741 NDFREE(&nd, NDF_ONLY_PNBUF);
2742 if (nd.ni_dvp == nd.ni_vp && vpexcl)
2743 vrele(nd.ni_dvp);
2744 else
2745 vput(nd.ni_dvp);
2746 }
2747 if (nd.ni_vp) {
2748 if (vpexcl)
2749 vput(nd.ni_vp);
2750 else
2751 vrele(nd.ni_vp);
2752 }
2753 return (error);
2754}
2755
2756/*
2757 * nfs rmdir service
2758 */
2759int
e851b29e
CP
2760nfsrv_rmdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2761 struct thread *td, struct mbuf **mrq)
984263bc
MD
2762{
2763 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2764 struct sockaddr *nam = nfsd->nd_nam;
2765 caddr_t dpos = nfsd->nd_dpos;
2766 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2767 u_int32_t *tl;
2768 int32_t t1;
984263bc
MD
2769 caddr_t bpos;
2770 int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
2771 int v3 = (nfsd->nd_flag & ND_NFSV3);
2772 char *cp2;
2773 struct mbuf *mb, *mreq;
2774 struct vnode *vp, *dirp = (struct vnode *)0;
2775 struct vattr dirfor, diraft;
2776 nfsfh_t nfh;
2777 fhandle_t *fhp;
2778 struct nameidata nd;
2779 u_quad_t frev;
2780
2781 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2782 ndclear(&nd);
2783
2784 fhp = &nfh.fh_generic;
2785 nfsm_srvmtofh(fhp);
2786 nfsm_srvnamesiz(len);
2787 nd.ni_cnd.cn_cred = cred;
2b69e610
MD
2788 nd.ni_cnd.cn_nameiop = NAMEI_DELETE;
2789 nd.ni_cnd.cn_flags = CNP_LOCKPARENT | CNP_LOCKLEAF;
984263bc 2790 error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
dadab5e9 2791 &dirp, td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc
MD
2792 if (dirp) {
2793 if (v3) {
3b568787 2794 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2795 } else {
2796 vrele(dirp);
2797 dirp = NULL;
2798 }
2799 }
2800 if (error) {
2801 nfsm_reply(NFSX_WCCDATA(v3));
2802 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2803 error = 0;
2804 goto nfsmout;
2805 }
2806 vp = nd.ni_vp;
2807 if (vp->v_type != VDIR) {
2808 error = ENOTDIR;
2809 goto out;
2810 }
2811 /*
2812 * No rmdir "." please.
2813 */
2814 if (nd.ni_dvp == vp) {
2815 error = EINVAL;
2816 goto out;
2817 }
2818 /*
2819 * The root of a mounted filesystem cannot be deleted.
2820 */
2821 if (vp->v_flag & VROOT)
2822 error = EBUSY;
2823out:
2824 /*
2825 * Issue or abort op. Since SAVESTART is not set, path name
2826 * component is freed by the VOP after either.
2827 */
2828 if (!error) {
2829 nqsrv_getl(nd.ni_dvp, ND_WRITE);
2830 nqsrv_getl(vp, ND_WRITE);
bc0c094e 2831 error = VOP_RMDIR(nd.ni_dvp, NCPNULL, nd.ni_vp, &nd.ni_cnd);
b8997912
MD
2832 if (error == 0)
2833 cache_purge(nd.ni_vp);
984263bc
MD
2834 }
2835 NDFREE(&nd, NDF_ONLY_PNBUF);
2836
2837 if (dirp)
3b568787 2838 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2839 nfsm_reply(NFSX_WCCDATA(v3));
2840 if (v3) {
2841 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2842 error = 0;
2843 }
2844 /* fall through */
2845
2846nfsmout:
2847 NDFREE(&nd, NDF_ONLY_PNBUF);
2848 if (dirp)
2849 vrele(dirp);
2850 if (nd.ni_dvp) {
2851 if (nd.ni_dvp == nd.ni_vp)
2852 vrele(nd.ni_dvp);
2853 else
2854 vput(nd.ni_dvp);
2855 }
2856 if (nd.ni_vp)
2857 vput(nd.ni_vp);
2858
2859 return(error);
2860}
2861
2862/*
2863 * nfs readdir service
2864 * - mallocs what it thinks is enough to read
2865 * count rounded up to a multiple of NFS_DIRBLKSIZ <= NFS_MAXREADDIR
2866 * - calls VOP_READDIR()
2867 * - loops around building the reply
2868 * if the output generated exceeds count break out of loop
2869 * The nfsm_clget macro is used here so that the reply will be packed
2870 * tightly in mbuf clusters.
2871 * - it only knows that it has encountered eof when the VOP_READDIR()
2872 * reads nothing
2873 * - as such one readdir rpc will return eof false although you are there
2874 * and then the next will return eof
2875 * - it trims out records with d_fileno == 0
2876 * this doesn't matter for Unix clients, but they might confuse clients
2877 * for other os'.
2878 * NB: It is tempting to set eof to true if the VOP_READDIR() reads less
2879 * than requested, but this may not apply to all filesystems. For
2880 * example, client NFS does not { although it is never remote mounted
2881 * anyhow }
2882 * The alternate call nfsrv_readdirplus() does lookups as well.
2883 * PS: The NFS protocol spec. does not clarify what the "count" byte
2884 * argument is a count of.. just name strings and file id's or the
2885 * entire reply rpc or ...
2886 * I tried just file name and id sizes and it confused the Sun client,
2887 * so I am using the full rpc size now. The "paranoia.." comment refers
2888 * to including the status longwords that are not a part of the dir.
2889 * "entry" structures, but are in the rpc.
2890 */
2891struct flrep {
2892 nfsuint64 fl_off;
2893 u_int32_t fl_postopok;
2894 u_int32_t fl_fattr[NFSX_V3FATTR / sizeof (u_int32_t)];
2895 u_int32_t fl_fhok;
2896 u_int32_t fl_fhsize;
2897 u_int32_t fl_nfh[NFSX_V3FH / sizeof (u_int32_t)];
2898};
2899
2900int
e851b29e
CP
2901nfsrv_readdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2902 struct thread *td, struct mbuf **mrq)
984263bc
MD
2903{
2904 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2905 struct sockaddr *nam = nfsd->nd_nam;
2906 caddr_t dpos = nfsd->nd_dpos;
2907 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2908 char *bp, *be;
2909 struct mbuf *mp;
2910 struct dirent *dp;
2911 caddr_t cp;
2912 u_int32_t *tl;
2913 int32_t t1;
984263bc
MD
2914 caddr_t bpos;
2915 struct mbuf *mb, *mb2, *mreq, *mp2;
2916 char *cpos, *cend, *cp2, *rbuf;
2917 struct vnode *vp = NULL;
2918 struct vattr at;
2919 nfsfh_t nfh;
2920 fhandle_t *fhp;
2921 struct uio io;
2922 struct iovec iv;
2923 int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
2924 int siz, cnt, fullsiz, eofflag, rdonly, cache, ncookies;
2925 int v3 = (nfsd->nd_flag & ND_NFSV3);
2926 u_quad_t frev, off, toff, verf;
2927 u_long *cookies = NULL, *cookiep; /* needs to be int64_t or off_t */
2928
2929 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2930 fhp = &nfh.fh_generic;
2931 nfsm_srvmtofh(fhp);
2932 if (v3) {
2933 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2934 toff = fxdr_hyper(tl);
2935 tl += 2;
2936 verf = fxdr_hyper(tl);
2937 tl += 2;
2938 } else {
2939 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2940 toff = fxdr_unsigned(u_quad_t, *tl++);
2941 verf = 0; /* shut up gcc */
2942 }
2943 off = toff;
2944 cnt = fxdr_unsigned(int, *tl);
2945 siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
2946 xfer = NFS_SRVMAXDATA(nfsd);
2947 if (cnt > xfer)
2948 cnt = xfer;
2949 if (siz > xfer)
2950 siz = xfer;
2951 fullsiz = siz;
2952 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
2953 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
2954 if (!error && vp->v_type != VDIR) {
2955 error = ENOTDIR;
2956 vput(vp);
2957 vp = NULL;
2958 }
2959 if (error) {
2960 nfsm_reply(NFSX_UNSIGNED);
2961 nfsm_srvpostop_attr(getret, &at);
2962 error = 0;
2963 goto nfsmout;
2964 }
2965
2966 /*
2967 * Obtain lock on vnode for this section of the code
2968 */
2969
2970 nqsrv_getl(vp, ND_READ);
2971 if (v3) {
3b568787 2972 error = getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
2973#if 0
2974 /*
2975 * XXX This check may be too strict for Solaris 2.5 clients.
2976 */
2977 if (!error && toff && verf && verf != at.va_filerev)
2978 error = NFSERR_BAD_COOKIE;
2979#endif
2980 }
2981 if (!error)
dadab5e9 2982 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 0);
984263bc
MD
2983 if (error) {
2984 vput(vp);
2985 vp = NULL;
2986 nfsm_reply(NFSX_POSTOPATTR(v3));
2987 nfsm_srvpostop_attr(getret, &at);
2988 error = 0;
2989 goto nfsmout;
2990 }
5fd012e0 2991 VOP_UNLOCK(vp, 0, td);
984263bc
MD
2992
2993 /*
2994 * end section. Allocate rbuf and continue
2995 */
2996 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
2997again:
2998 iv.iov_base = rbuf;
2999 iv.iov_len = fullsiz;
3000 io.uio_iov = &iv;
3001 io.uio_iovcnt = 1;
3002 io.uio_offset = (off_t)off;
3003 io.uio_resid = fullsiz;
3004 io.uio_segflg = UIO_SYSSPACE;
3005 io.uio_rw = UIO_READ;
dadab5e9 3006 io.uio_td = NULL;
984263bc 3007 eofflag = 0;
5fd012e0 3008 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
984263bc
MD
3009 if (cookies) {
3010 free((caddr_t)cookies, M_TEMP);
3011 cookies = NULL;
3012 }
3013 error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
3014 off = (off_t)io.uio_offset;
3015 if (!cookies && !error)
3016 error = NFSERR_PERM;
3017 if (v3) {
3b568787 3018 getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
3019 if (!error)
3020 error = getret;
3021 }
5fd012e0 3022 VOP_UNLOCK(vp, 0, td);
984263bc
MD
3023 if (error) {
3024 vrele(vp);
3025 vp = NULL;
3026 free((caddr_t)rbuf, M_TEMP);
3027 if (cookies)
3028 free((caddr_t)cookies, M_TEMP);
3029 nfsm_reply(NFSX_POSTOPATTR(v3));
3030 nfsm_srvpostop_attr(getret, &at);
3031 error = 0;
3032 goto nfsmout;
3033 }
3034 if (io.uio_resid) {
3035 siz -= io.uio_resid;
3036
3037 /*
3038 * If nothing read, return eof
3039 * rpc reply
3040 */
3041 if (siz == 0) {
3042 vrele(vp);
3043 vp = NULL;
3044 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) +
3045 2 * NFSX_UNSIGNED);
3046 if (v3) {
3047 nfsm_srvpostop_attr(getret, &at);
3048 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
3049 txdr_hyper(at.va_filerev, tl);
3050 tl += 2;
3051 } else
3052 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3053 *tl++ = nfs_false;
3054 *tl = nfs_true;
3055 FREE((caddr_t)rbuf, M_TEMP);
3056 FREE((caddr_t)cookies, M_TEMP);
3057 error = 0;
3058 goto nfsmout;
3059 }
3060 }
3061
3062 /*
3063 * Check for degenerate cases of nothing useful read.
3064 * If so go try again
3065 */
3066 cpos = rbuf;
3067 cend = rbuf + siz;
3068 dp = (struct dirent *)cpos;
3069 cookiep = cookies;
3070 /*
3071 * For some reason FreeBSD's ufs_readdir() chooses to back the
3072 * directory offset up to a block boundary, so it is necessary to
3073 * skip over the records that preceed the requested offset. This
3074 * requires the assumption that file offset cookies monotonically
3075 * increase.
3076 */
3077 while (cpos < cend && ncookies > 0 &&
3078 (dp->d_fileno == 0 || dp->d_type == DT_WHT ||
3079 ((u_quad_t)(*cookiep)) <= toff)) {
3080 cpos += dp->d_reclen;
3081 dp = (struct dirent *)cpos;
3082 cookiep++;
3083 ncookies--;
3084 }
3085 if (cpos >= cend || ncookies == 0) {
3086 toff = off;
3087 siz = fullsiz;
3088 goto again;
3089 }
3090
3091 len = 3 * NFSX_UNSIGNED; /* paranoia, probably can be 0 */
3092 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) + siz);
3093 if (v3) {
3094 nfsm_srvpostop_attr(getret, &at);
3095 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3096 txdr_hyper(at.va_filerev, tl);
3097 }
3098 mp = mp2 = mb;
3099 bp = bpos;
3100 be = bp + M_TRAILINGSPACE(mp);
3101
3102 /* Loop through the records and build reply */
3103 while (cpos < cend && ncookies > 0) {
3104 if (dp->d_fileno != 0 && dp->d_type != DT_WHT) {
3105 nlen = dp->d_namlen;
3106 rem = nfsm_rndup(nlen) - nlen;
3107 len += (4 * NFSX_UNSIGNED + nlen + rem);
3108 if (v3)
3109 len += 2 * NFSX_UNSIGNED;
3110 if (len > cnt) {
3111 eofflag = 0;
3112 break;
3113 }
3114 /*
3115 * Build the directory record xdr from
3116 * the dirent entry.
3117 */
3118 nfsm_clget;
3119 *tl = nfs_true;
3120 bp += NFSX_UNSIGNED;
3121 if (v3) {
3122 nfsm_clget;
3123 *tl = 0;
3124 bp += NFSX_UNSIGNED;
3125 }
3126 nfsm_clget;
3127 *tl = txdr_unsigned(dp->d_fileno);
3128 bp += NFSX_UNSIGNED;
3129 nfsm_clget;
3130 *tl = txdr_unsigned(nlen);
3131 bp += NFSX_UNSIGNED;
3132
3133 /* And loop around copying the name */
3134 xfer = nlen;
3135 cp = dp->d_name;
3136 while (xfer > 0) {
3137 nfsm_clget;
3138 if ((bp+xfer) > be)
3139 tsiz = be-bp;
3140 else
3141 tsiz = xfer;
3142 bcopy(cp, bp, tsiz);
3143 bp += tsiz;
3144 xfer -= tsiz;
3145 if (xfer > 0)
3146 cp += tsiz;
3147 }
3148 /* And null pad to a int32_t boundary */
3149 for (i = 0; i < rem; i++)
3150 *bp++ = '\0';
3151 nfsm_clget;
3152
3153 /* Finish off the record */
3154 if (v3) {
3155 *tl = 0;
3156 bp += NFSX_UNSIGNED;
3157 nfsm_clget;
3158 }
3159 *tl = txdr_unsigned(*cookiep);
3160 bp += NFSX_UNSIGNED;
3161 }
3162 cpos += dp->d_reclen;
3163 dp = (struct dirent *)cpos;
3164 cookiep++;
3165 ncookies--;
3166 }
3167 vrele(vp);
3168 vp = NULL;
3169 nfsm_clget;
3170 *tl = nfs_false;
3171 bp += NFSX_UNSIGNED;
3172 nfsm_clget;
3173 if (eofflag)
3174 *tl = nfs_true;
3175 else
3176 *tl = nfs_false;
3177 bp += NFSX_UNSIGNED;
3178 if (mp != mb) {
3179 if (bp < be)
3180 mp->m_len = bp - mtod(mp, caddr_t);
3181 } else
3182 mp->m_len += bp - bpos;
3183 FREE((caddr_t)rbuf, M_TEMP);
3184 FREE((caddr_t)cookies, M_TEMP);
3185
3186nfsmout:
3187 if (vp)
3188 vrele(vp);
3189 return(error);
3190}
3191
3192int
e851b29e
CP
3193nfsrv_readdirplus(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3194 struct thread *td, struct mbuf **mrq)
984263bc
MD
3195{
3196 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3197 struct sockaddr *nam = nfsd->nd_nam;
3198 caddr_t dpos = nfsd->nd_dpos;
3199 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3200 char *bp, *be;
3201 struct mbuf *mp;
3202 struct dirent *dp;
3203 caddr_t cp;
3204 u_int32_t *tl;
3205 int32_t t1;
984263bc
MD
3206 caddr_t bpos;
3207 struct mbuf *mb, *mb2, *mreq, *mp2;
3208 char *cpos, *cend, *cp2, *rbuf;
3209 struct vnode *vp = NULL, *nvp;
3210 struct flrep fl;
3211 nfsfh_t nfh;
3212 fhandle_t *fhp, *nfhp = (fhandle_t *)fl.fl_nfh;
3213 struct uio io;
3214 struct iovec iv;
3215 struct vattr va, at, *vap = &va;
3216 struct nfs_fattr *fp;
3217 int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
3218 int siz, cnt, fullsiz, eofflag, rdonly, cache, dirlen, ncookies;
3219 u_quad_t frev, off, toff, verf;
3220 u_long *cookies = NULL, *cookiep; /* needs to be int64_t or off_t */
3221
3222 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
3223 fhp = &nfh.fh_generic;
3224 nfsm_srvmtofh(fhp);
3225 nfsm_dissect(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
3226 toff = fxdr_hyper(tl);
3227 tl += 2;
3228 verf = fxdr_hyper(tl);
3229 tl += 2;
3230 siz = fxdr_unsigned(int, *tl++);
3231 cnt = fxdr_unsigned(int, *tl);
3232 off = toff;
3233 siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
3234 xfer = NFS_SRVMAXDATA(nfsd);
3235 if (cnt > xfer)
3236 cnt = xfer;
3237 if (siz > xfer)
3238 siz = xfer;
3239 fullsiz = siz;
3240 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3241 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3242 if (!error && vp->v_type != VDIR) {
3243 error = ENOTDIR;
3244 vput(vp);
3245 vp = NULL;
3246 }
3247 if (error) {
3248 nfsm_reply(NFSX_UNSIGNED);
3249 nfsm_srvpostop_attr(getret, &at);
3250 error = 0;
3251 goto nfsmout;
3252 }
3b568787 3253 error = getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
3254#if 0
3255 /*
3256 * XXX This check may be too strict for Solaris 2.5 clients.
3257 */
3258 if (!error && toff && verf && verf != at.va_filerev)
3259 error = NFSERR_BAD_COOKIE;
3260#endif
3261 if (!error) {
3262 nqsrv_getl(vp, ND_READ);
dadab5e9 3263 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 0);
984263bc
MD
3264 }
3265 if (error) {
3266 vput(vp);
3267 vp = NULL;
3268 nfsm_reply(NFSX_V3POSTOPATTR);
3269 nfsm_srvpostop_attr(getret, &at);
3270 error = 0;
3271 goto nfsmout;
3272 }
5fd012e0 3273 VOP_UNLOCK(vp, 0, td);
984263bc
MD
3274 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
3275again:
3276 iv.iov_base = rbuf;
3277 iv.iov_len = fullsiz;
3278 io.uio_iov = &iv;
3279 io.uio_iovcnt = 1;
3280 io.uio_offset = (off_t)off;
3281 io.uio_resid = fullsiz;
3282 io.uio_segflg = UIO_SYSSPACE;
3283 io.uio_rw = UIO_READ;
dadab5e9 3284 io.uio_td = NULL;
984263bc 3285 eofflag = 0;
5fd012e0 3286 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
984263bc
MD
3287 if (cookies) {
3288 free((caddr_t)cookies, M_TEMP);
3289 cookies = NULL;
3290 }
3291 error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
3292 off = (u_quad_t)io.uio_offset;
3b568787 3293 getret = VOP_GETATTR(vp, &at, td);
5fd012e0 3294 VOP_UNLOCK(vp, 0, td);
984263bc
MD
3295 if (!cookies && !error)
3296 error = NFSERR_PERM;
3297 if (!error)
3298 error = getret;
3299 if (error) {
3300 vrele(vp);
3301 vp = NULL;
3302 if (cookies)
3303 free((caddr_t)cookies, M_TEMP);
3304 free((caddr_t)rbuf, M_TEMP);
3305 nfsm_reply(NFSX_V3POSTOPATTR);
3306 nfsm_srvpostop_attr(getret, &at);
3307 error = 0;
3308 goto nfsmout;
3309 }
3310 if (io.uio_resid) {
3311 siz -= io.uio_resid;
3312
3313 /*
3314 * If nothing read, return eof
3315 * rpc reply
3316 */
3317 if (siz == 0) {
3318 vrele(vp);
3319 vp = NULL;
3320 nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF +
3321 2 * NFSX_UNSIGNED);
3322 nfsm_srvpostop_attr(getret, &at);
3323 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
3324 txdr_hyper(at.va_filerev, tl);
3325 tl += 2;
3326 *tl++ = nfs_false;
3327 *tl = nfs_true;
3328 FREE((caddr_t)cookies, M_TEMP);
3329 FREE((caddr_t)rbuf, M_TEMP);
3330 error = 0;
3331 goto nfsmout;
3332 }
3333 }
3334
3335 /*
3336 * Check for degenerate cases of nothing useful read.
3337 * If so go try again
3338 */
3339 cpos = rbuf;
3340 cend = rbuf + siz;
3341 dp = (struct dirent *)cpos;
3342 cookiep = cookies;
3343 /*
3344 * For some reason FreeBSD's ufs_readdir() chooses to back the
3345 * directory offset up to a block boundary, so it is necessary to
3346 * skip over the records that preceed the requested offset. This
3347 * requires the assumption that file offset cookies monotonically
3348 * increase.
3349 */
3350 while (cpos < cend && ncookies > 0 &&
3351 (dp->d_fileno == 0 || dp->d_type == DT_WHT ||
3352 ((u_quad_t)(*cookiep)) <= toff)) {
3353 cpos += dp->d_reclen;
3354 dp = (struct dirent *)cpos;
3355 cookiep++;
3356 ncookies--;
3357 }
3358 if (cpos >= cend || ncookies == 0) {
3359 toff = off;
3360 siz = fullsiz;
3361 goto again;
3362 }
3363
3364 /*
3365 * Probe one of the directory entries to see if the filesystem
3366 * supports VGET.
3367 */
3368 if (VFS_VGET(vp->v_mount, dp->d_fileno, &nvp) == EOPNOTSUPP) {
3369 error = NFSERR_NOTSUPP;
3370 vrele(vp);
3371 vp = NULL;
3372 free((caddr_t)cookies, M_TEMP);
3373 free((caddr_t)rbuf, M_TEMP);
3374 nfsm_reply(NFSX_V3POSTOPATTR);
3375 nfsm_srvpostop_attr(getret, &at);
3376 error = 0;
3377 goto nfsmout;
3378 }
3379 vput(nvp);
3380 nvp = NULL;
3381
3382 dirlen = len = NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF + 2 * NFSX_UNSIGNED;
3383 nfsm_reply(cnt);
3384 nfsm_srvpostop_attr(getret, &at);
3385 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3386 txdr_hyper(at.va_filerev, tl);
3387 mp = mp2 = mb;
3388 bp = bpos;
3389 be = bp + M_TRAILINGSPACE(mp);
3390
3391 /* Loop through the records and build reply */
3392 while (cpos < cend && ncookies > 0) {
3393 if (dp->d_fileno != 0 && dp->d_type != DT_WHT) {
3394 nlen = dp->d_namlen;
3395 rem = nfsm_rndup(nlen)-nlen;
3396
3397 /*
3398 * For readdir_and_lookup get the vnode using
3399 * the file number.
3400 */
3401 if (VFS_VGET(vp->v_mount, dp->d_fileno, &nvp))
3402 goto invalid;
3403 bzero((caddr_t)nfhp, NFSX_V3FH);
3404 nfhp->fh_fsid =
3405 nvp->v_mount->mnt_stat.f_fsid;
3406 if (VFS_VPTOFH(nvp, &nfhp->fh_fid)) {
3407 vput(nvp);
3408 nvp = NULL;
3409 goto invalid;
3410 }
3b568787 3411 if (VOP_GETATTR(nvp, vap, td)) {
984263bc
MD
3412 vput(nvp);
3413 nvp = NULL;
3414 goto invalid;
3415 }
3416 vput(nvp);
3417 nvp = NULL;
3418
3419 /*
3420 * If either the dircount or maxcount will be
3421 * exceeded, get out now. Both of these lengths
3422 * are calculated conservatively, including all
3423 * XDR overheads.
3424 */
3425 len += (8 * NFSX_UNSIGNED + nlen + rem + NFSX_V3FH +
3426 NFSX_V3POSTOPATTR);
3427 dirlen += (6 * NFSX_UNSIGNED + nlen + rem);
3428 if (len > cnt || dirlen > fullsiz) {
3429 eofflag = 0;
3430 break;
3431 }
3432
3433 /*
3434 * Build the directory record xdr from
3435 * the dirent entry.
3436 */
3437 fp = (struct nfs_fattr *)&fl.fl_fattr;
3438 nfsm_srvfillattr(vap, fp);
3439 fl.fl_fhsize = txdr_unsigned(NFSX_V3FH);
3440 fl.fl_fhok = nfs_true;
3441 fl.fl_postopok = nfs_true;
3442 fl.fl_off.nfsuquad[0] = 0;
3443 fl.fl_off.nfsuquad[1] = txdr_unsigned(*cookiep);
3444
3445 nfsm_clget;
3446 *tl = nfs_true;
3447 bp += NFSX_UNSIGNED;
3448 nfsm_clget;
3449 *tl = 0;
3450 bp += NFSX_UNSIGNED;
3451 nfsm_clget;
3452 *tl = txdr_unsigned(dp->d_fileno);
3453 bp += NFSX_UNSIGNED;
3454 nfsm_clget;
3455 *tl = txdr_unsigned(nlen);
3456 bp += NFSX_UNSIGNED;
3457
3458 /* And loop around copying the name */
3459 xfer = nlen;
3460 cp = dp->d_name;
3461 while (xfer > 0) {
3462 nfsm_clget;
3463 if ((bp + xfer) > be)
3464 tsiz = be - bp;
3465 else
3466 tsiz = xfer;
3467 bcopy(cp, bp, tsiz);
3468 bp += tsiz;
3469 xfer -= tsiz;
3470 if (xfer > 0)
3471 cp += tsiz;
3472 }
3473 /* And null pad to a int32_t boundary */
3474 for (i = 0; i < rem; i++)
3475 *bp++ = '\0';
3476
3477 /*
3478 * Now copy the flrep structure out.
3479 */
3480 xfer = sizeof (struct flrep);
3481 cp = (caddr_t)&fl;
3482 while (xfer > 0) {
3483 nfsm_clget;
3484 if ((bp + xfer) > be)
3485 tsiz = be - bp;
3486 else
3487 tsiz = xfer;
3488 bcopy(cp, bp, tsiz);
3489 bp += tsiz;
3490 xfer -= tsiz;
3491 if (xfer > 0)
3492 cp += tsiz;
3493 }
3494 }
3495invalid:
3496 cpos += dp->d_reclen;
3497 dp = (struct dirent *)cpos;
3498 cookiep++;
3499 ncookies--;
3500 }
3501 vrele(vp);
3502 vp = NULL;
3503 nfsm_clget;
3504 *tl = nfs_false;
3505 bp += NFSX_UNSIGNED;
3506 nfsm_clget;
3507 if (eofflag)
3508 *tl = nfs_true;
3509 else
3510 *tl = nfs_false;
3511 bp += NFSX_UNSIGNED;
3512 if (mp != mb) {
3513 if (bp < be)
3514 mp->m_len = bp - mtod(mp, caddr_t);
3515 } else
3516 mp->m_len += bp - bpos;
3517 FREE((caddr_t)cookies, M_TEMP);
3518 FREE((caddr_t)rbuf, M_TEMP);
3519nfsmout:
3520 if (vp)
3521 vrele(vp);
3522 return(error);
3523}
3524
3525/*
3526 * nfs commit service
3527 */
3528int
e851b29e
CP
3529nfsrv_commit(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3530 struct thread *td, struct mbuf **mrq)
984263bc
MD
3531{
3532 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3533 struct sockaddr *nam = nfsd->nd_nam;
3534 caddr_t dpos = nfsd->nd_dpos;
3535 struct ucred *cred = &nfsd->nd_cr;
3536 struct vattr bfor, aft;
3537 struct vnode *vp = NULL;
3538 nfsfh_t nfh;
3539 fhandle_t *fhp;
dadab5e9
MD
3540 u_int32_t *tl;
3541 int32_t t1;
984263bc
MD
3542 caddr_t bpos;
3543 int error = 0, rdonly, for_ret = 1, aft_ret = 1, cnt, cache;
3544 char *cp2;
3545 struct mbuf *mb, *mb2, *mreq;
3546 u_quad_t frev, off;
3547
3548 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
3549#ifndef nolint
3550 cache = 0;
3551#endif
3552 fhp = &nfh.fh_generic;
3553 nfsm_srvmtofh(fhp);
3554 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3555
3556 /*
3557 * XXX At this time VOP_FSYNC() does not accept offset and byte
3558 * count parameters, so these arguments are useless (someday maybe).
3559 */
3560 off = fxdr_hyper(tl);
3561 tl += 2;
3562 cnt = fxdr_unsigned(int, *tl);
3563 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3564 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3565 if (error) {
3566 nfsm_reply(2 * NFSX_UNSIGNED);
3567 nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
3568 error = 0;
3569 goto nfsmout;
3570 }
3b568787 3571 for_ret = VOP_GETATTR(vp, &bfor, td);
984263bc
MD
3572
3573 if (cnt > MAX_COMMIT_COUNT) {
3574 /*
3575 * Give up and do the whole thing
3576 */
3577 if (vp->v_object &&
3578 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
3579 vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC);
3580 }
3b568787 3581 error = VOP_FSYNC(vp, MNT_WAIT, td);
984263bc
MD
3582 } else {
3583 /*
3584 * Locate and synchronously write any buffers that fall
3585 * into the requested range. Note: we are assuming that
3586 * f_iosize is a power of 2.
3587 */
3588 int iosize = vp->v_mount->mnt_stat.f_iosize;
3589 int iomask = iosize - 1;
3590 int s;
3591 daddr_t lblkno;
3592
3593 /*
3594 * Align to iosize boundry, super-align to page boundry.
3595 */
3596 if (off & iomask) {
3597 cnt += off & iomask;
3598 off &= ~(u_quad_t)iomask;
3599 }
3600 if (off & PAGE_MASK) {
3601 cnt += off & PAGE_MASK;
3602 off &= ~(u_quad_t)PAGE_MASK;
3603 }
3604 lblkno = off / iosize;
3605
3606 if (vp->v_object &&
3607 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
3608 vm_object_page_clean(vp->v_object, off / PAGE_SIZE, (cnt + PAGE_MASK) / PAGE_SIZE, OBJPC_SYNC);
3609 }
3610
3611 s = splbio();
3612 while (cnt > 0) {
3613 struct buf *bp;
3614
3615 /*
3616 * If we have a buffer and it is marked B_DELWRI we
3617 * have to lock and write it. Otherwise the prior
3618 * write is assumed to have already been committed.
3619 */
3620 if ((bp = gbincore(vp, lblkno)) != NULL && (bp->b_flags & B_DELWRI)) {
3621 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT)) {
3622 BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL);
3623 continue; /* retry */
3624 }
3625 bremfree(bp);
3626 bp->b_flags &= ~B_ASYNC;
3627 VOP_BWRITE(bp->b_vp, bp);
3628 ++nfs_commit_miss;
3629 }
3630 ++nfs_commit_blks;
3631 if (cnt < iosize)
3632 break;
3633 cnt -= iosize;
3634 ++lblkno;
3635 }
3636 splx(s);
3637 }
3638
3b568787 3639 aft_ret = VOP_GETATTR(vp, &aft, td);
984263bc
MD
3640 vput(vp);
3641 vp = NULL;
3642 nfsm_reply(NFSX_V3WCCDATA + NFSX_V3WRITEVERF);
3643 nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
3644 if (!error) {
3645 nfsm_build(tl, u_int32_t *, NFSX_V3WRITEVERF);
3646 if (nfsver.tv_sec == 0)
3647 nfsver = boottime;
3648 *tl++ = txdr_unsigned(nfsver.tv_sec);
3a6f9faf 3649 *tl = txdr_unsigned(nfsver.tv_nsec / 1000);
984263bc
MD
3650 } else {
3651 error = 0;
3652 }
3653nfsmout:
3654 if (vp)
3655 vput(vp);
3656 return(error);
3657}
3658
3659/*
3660 * nfs statfs service
3661 */
3662int
e851b29e
CP
3663nfsrv_statfs(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3664 struct thread *td, struct mbuf **mrq)
984263bc
MD
3665{
3666 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3667 struct sockaddr *nam = nfsd->nd_nam;
3668 caddr_t dpos = nfsd->nd_dpos;
3669 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3670 struct statfs *sf;
3671 struct nfs_statfs *sfp;
3672 u_int32_t *tl;
3673 int32_t t1;
984263bc
MD
3674 caddr_t bpos;
3675 int error = 0, rdonly, cache, getret = 1;
3676 int v3 = (nfsd->nd_flag & ND_NFSV3);
3677 char *cp2;
3678 struct mbuf *mb, *mb2, *mreq;
3679 struct vnode *vp = NULL;
3680 struct vattr at;
3681 nfsfh_t nfh;
3682 fhandle_t *fhp;
3683 struct statfs statfs;
3684 u_quad_t frev, tval;
3685
3686 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
3687#ifndef nolint
3688 cache = 0;
3689#endif
3690 fhp = &nfh.fh_generic;
3691 nfsm_srvmtofh(fhp);
3692 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3693 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3694 if (error) {
3695 nfsm_reply(NFSX_UNSIGNED);
3696 nfsm_srvpostop_attr(getret, &at);
3697 error = 0;
3698 goto nfsmout;
3699 }
3700 sf = &statfs;
dadab5e9 3701 error = VFS_STATFS(vp->v_mount, sf, td);
3b568787 3702 getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
3703 vput(vp);
3704 vp = NULL;
3705 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_STATFS(v3));
3706 if (v3)
3707 nfsm_srvpostop_attr(getret, &at);
3708 if (error) {
3709 error = 0;
3710 goto nfsmout;
3711 }
3712 nfsm_build(sfp, struct nfs_statfs *, NFSX_STATFS(v3));
3713 if (v3) {
3714 tval = (u_quad_t)sf->f_blocks;
3715 tval *= (u_quad_t)sf->f_bsize;
3716 txdr_hyper(tval, &sfp->sf_tbytes);
3717 tval = (u_quad_t)sf->f_bfree;
3718 tval *= (u_quad_t)sf->f_bsize;
3719 txdr_hyper(tval, &sfp->sf_fbytes);
3720 tval = (u_quad_t)sf->f_bavail;
3721 tval *= (u_quad_t)sf->f_bsize;
3722 txdr_hyper(tval, &sfp->sf_abytes);
3723 sfp->sf_tfiles.nfsuquad[0] = 0;
3724 sfp->sf_tfiles.nfsuquad[1] = txdr_unsigned(sf->f_files);
3725 sfp->sf_ffiles.nfsuquad[0] = 0;
3726 sfp->sf_ffiles.nfsuquad[1] = txdr_unsigned(sf->f_ffree);
3727 sfp->sf_afiles.nfsuquad[0] = 0;
3728 sfp->sf_afiles.nfsuquad[1] = txdr_unsigned(sf->f_ffree);
3729 sfp->sf_invarsec = 0;
3730 } else {
3731 sfp->sf_tsize = txdr_unsigned(NFS_MAXDGRAMDATA);
3732 sfp->sf_bsize = txdr_unsigned(sf->f_bsize);
3733 sfp->sf_blocks = txdr_unsigned(sf->f_blocks);
3734 sfp->sf_bfree = txdr_unsigned(sf->f_bfree);
3735 sfp->sf_bavail = txdr_unsigned(sf->f_bavail);
3736 }
3737nfsmout:
3738 if (vp)
3739 vput(vp);
3740 return(error);
3741}
3742
3743/*
3744 * nfs fsinfo service
3745 */
3746int
e851b29e
CP
3747nfsrv_fsinfo(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3748 struct thread *td, struct mbuf **mrq)
984263bc
MD
3749{
3750 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3751 struct sockaddr *nam = nfsd->nd_nam;
3752 caddr_t dpos = nfsd->nd_dpos;
3753 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3754 u_int32_t *tl;
3755 struct nfsv3_fsinfo *sip;
3756 int32_t t1;
984263bc
MD
3757 caddr_t bpos;
3758 int error = 0, rdonly, cache, getret = 1, pref;
3759 char *cp2;
3760 struct mbuf *mb, *mb2, *mreq;
3761 struct vnode *vp = NULL;
3762 struct vattr at;
3763 nfsfh_t nfh;
3764 fhandle_t *fhp;
3765 u_quad_t frev, maxfsize;
3766 struct statfs sb;
3767
3768 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
3769#ifndef nolint
3770 cache = 0;
3771#endif
3772 fhp = &nfh.fh_generic;
3773 nfsm_srvmtofh(fhp);
3774 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3775 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3776 if (error) {
3777 nfsm_reply(NFSX_UNSIGNED);
3778 nfsm_srvpostop_attr(getret, &at);
3779 error = 0;
3780 goto nfsmout;
3781 }
3782
3783 /* XXX Try to make a guess on the max file size. */
dadab5e9 3784 VFS_STATFS(vp->v_mount, &sb, td);
984263bc
MD
3785 maxfsize = (u_quad_t)0x80000000 * sb.f_bsize - 1;
3786
3b568787 3787 getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
3788 vput(vp);
3789 vp = NULL;
3790 nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3FSINFO);
3791 nfsm_srvpostop_attr(getret, &at);
3792 nfsm_build(sip, struct nfsv3_fsinfo *, NFSX_V3FSINFO);
3793
3794 /*
3795 * XXX
3796 * There should be file system VFS OP(s) to get this information.
3797 * For now, assume ufs.
3798 */
3799 if (slp->ns_so->so_type == SOCK_DGRAM)
3800 pref = NFS_MAXDGRAMDATA;
3801 else
3802 pref = NFS_MAXDATA;
3803 sip->fs_rtmax = txdr_unsigned(NFS_MAXDATA);
3804 sip->fs_rtpref = txdr_unsigned(pref);
3805 sip->fs_rtmult = txdr_unsigned(NFS_FABLKSIZE);
3806 sip->fs_wtmax = txdr_unsigned(NFS_MAXDATA);
3807 sip->fs_wtpref = txdr_unsigned(pref);
3808 sip->fs_wtmult = txdr_unsigned(NFS_FABLKSIZE);
3809 sip->fs_dtpref = txdr_unsigned(pref);
3810 txdr_hyper(maxfsize, &sip->fs_maxfilesize);
3811 sip->fs_timedelta.nfsv3_sec = 0;
3812 sip->fs_timedelta.nfsv3_nsec = txdr_unsigned(1);
3813 sip->fs_properties = txdr_unsigned(NFSV3FSINFO_LINK |
3814 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
3815 NFSV3FSINFO_CANSETTIME);
3816nfsmout:
3817 if (vp)
3818 vput(vp);
3819 return(error);
3820}
3821
3822/*
3823 * nfs pathconf service
3824 */
3825int
e851b29e
CP
3826nfsrv_pathconf(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3827 struct thread *td, struct mbuf **mrq)
984263bc
MD
3828{
3829 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3830 struct sockaddr *nam = nfsd->nd_nam;
3831 caddr_t dpos = nfsd->nd_dpos;
3832 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3833 u_int32_t *tl;
3834 struct nfsv3_pathconf *pc;
3835 int32_t t1;
984263bc
MD
3836 caddr_t bpos;
3837 int error = 0, rdonly, cache, getret = 1;
3838 register_t linkmax, namemax, chownres, notrunc;
3839 char *cp2;
3840 struct mbuf *mb, *mb2, *mreq;
3841 struct vnode *vp = NULL;
3842 struct vattr at;
3843 nfsfh_t nfh;
3844 fhandle_t *fhp;
3845 u_quad_t frev;
3846
3847 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
3848#ifndef nolint
3849 cache = 0;
3850#endif
3851 fhp = &nfh.fh_generic;
3852 nfsm_srvmtofh(fhp);
3853 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3854 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3855 if (error) {
3856 nfsm_reply(NFSX_UNSIGNED);
3857 nfsm_srvpostop_attr(getret, &at);
3858 error = 0;
3859 goto nfsmout;
3860 }
3861 error = VOP_PATHCONF(vp, _PC_LINK_MAX, &linkmax);
3862 if (!error)
3863 error = VOP_PATHCONF(vp, _PC_NAME_MAX, &namemax);
3864 if (!error)
3865 error = VOP_PATHCONF(vp, _PC_CHOWN_RESTRICTED, &chownres);
3866 if (!error)
3867 error = VOP_PATHCONF(vp, _PC_NO_TRUNC, &notrunc);
3b568787 3868 getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
3869 vput(vp);
3870 vp = NULL;
3871 nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3PATHCONF);
3872 nfsm_srvpostop_attr(getret, &at);
3873 if (error) {
3874 error = 0;
3875 goto nfsmout;
3876 }
3877 nfsm_build(pc, struct nfsv3_pathconf *, NFSX_V3PATHCONF);
3878
3879 pc->pc_linkmax = txdr_unsigned(linkmax);
3880 pc->pc_namemax = txdr_unsigned(namemax);
3881 pc->pc_notrunc = txdr_unsigned(notrunc);
3882 pc->pc_chownrestricted = txdr_unsigned(chownres);
3883
3884 /*