Rename the proc pointer p to pp to clarify its use in portions of the tty
[dragonfly.git] / sys / vfs / nfs / nfs_serv.c
CommitLineData
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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 $
5df949e9 38 * $DragonFly: src/sys/vfs/nfs/nfs_serv.c,v 1.21 2004/12/20 18:37:59 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.
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64 */
65
66#include <sys/param.h>
67#include <sys/systm.h>
68#include <sys/proc.h>
fad57d0e 69#include <sys/nlookup.h>
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70#include <sys/namei.h>
71#include <sys/unistd.h>
72#include <sys/vnode.h>
73#include <sys/mount.h>
74#include <sys/socket.h>
75#include <sys/socketvar.h>
76#include <sys/malloc.h>
77#include <sys/mbuf.h>
78#include <sys/dirent.h>
79#include <sys/stat.h>
80#include <sys/kernel.h>
81#include <sys/sysctl.h>
82#include <sys/buf.h>
83
84#include <vm/vm.h>
85#include <vm/vm_extern.h>
86#include <vm/vm_zone.h>
87#include <vm/vm_object.h>
88
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89#include <sys/buf2.h>
90
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91#include "nfsproto.h"
92#include "rpcv2.h"
93#include "nfs.h"
94#include "xdr_subs.h"
95#include "nfsm_subs.h"
96#include "nqnfs.h"
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97
98#ifdef NFSRV_DEBUG
99#define nfsdbprintf(info) printf info
100#else
101#define nfsdbprintf(info)
102#endif
103
104#define MAX_COMMIT_COUNT (1024 * 1024)
105
053a4ed4 106#define NUM_HEURISTIC 1017
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107#define NHUSE_INIT 64
108#define NHUSE_INC 16
109#define NHUSE_MAX 2048
110
111static struct nfsheur {
112 struct vnode *nh_vp; /* vp to match (unreferenced pointer) */
113 off_t nh_nextr; /* next offset for sequential detection */
114 int nh_use; /* use count for selection */
115 int nh_seqcount; /* heuristic */
116} nfsheur[NUM_HEURISTIC];
117
118nfstype nfsv3_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK,
119 NFFIFO, NFNON };
120#ifndef NFS_NOSERVER
121nfstype nfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON,
122 NFCHR, NFNON };
123/* Global vars */
124extern u_int32_t nfs_xdrneg1;
125extern u_int32_t nfs_false, nfs_true;
126extern enum vtype nv3tov_type[8];
127extern struct nfsstats nfsstats;
128
129int nfsrvw_procrastinate = NFS_GATHERDELAY * 1000;
130int nfsrvw_procrastinate_v3 = 0;
131
3a6f9faf 132static struct timespec nfsver;
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133
134SYSCTL_DECL(_vfs_nfs);
135
136static int nfs_async;
137SYSCTL_INT(_vfs_nfs, OID_AUTO, async, CTLFLAG_RW, &nfs_async, 0, "");
138static int nfs_commit_blks;
139static int nfs_commit_miss;
140SYSCTL_INT(_vfs_nfs, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 0, "");
141SYSCTL_INT(_vfs_nfs, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 0, "");
142
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143static int nfsrv_access (struct vnode *,int,struct ucred *,int,
144 struct thread *, int);
145static void nfsrvw_coalesce (struct nfsrv_descript *,
146 struct nfsrv_descript *);
984263bc 147
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148/*
149 * nfs v3 access service
150 */
151int
dadab5e9 152nfsrv3_access(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
e851b29e 153 struct thread *td, struct mbuf **mrq)
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154{
155 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
156 struct sockaddr *nam = nfsd->nd_nam;
157 caddr_t dpos = nfsd->nd_dpos;
158 struct ucred *cred = &nfsd->nd_cr;
159 struct vnode *vp = NULL;
160 nfsfh_t nfh;
161 fhandle_t *fhp;
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162 u_int32_t *tl;
163 int32_t t1;
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164 caddr_t bpos;
165 int error = 0, rdonly, cache, getret;
166 char *cp2;
167 struct mbuf *mb, *mreq, *mb2;
168 struct vattr vattr, *vap = &vattr;
169 u_long testmode, nfsmode;
170 u_quad_t frev;
171
172 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
173#ifndef nolint
174 cache = 0;
175#endif
176 fhp = &nfh.fh_generic;
177 nfsm_srvmtofh(fhp);
178 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
179 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly,
180 (nfsd->nd_flag & ND_KERBAUTH), TRUE);
181 if (error) {
182 nfsm_reply(NFSX_UNSIGNED);
183 nfsm_srvpostop_attr(1, (struct vattr *)0);
184 error = 0;
185 goto nfsmout;
186 }
187 nfsmode = fxdr_unsigned(u_int32_t, *tl);
188 if ((nfsmode & NFSV3ACCESS_READ) &&
dadab5e9 189 nfsrv_access(vp, VREAD, cred, rdonly, td, 0))
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190 nfsmode &= ~NFSV3ACCESS_READ;
191 if (vp->v_type == VDIR)
192 testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND |
193 NFSV3ACCESS_DELETE);
194 else
195 testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND);
196 if ((nfsmode & testmode) &&
dadab5e9 197 nfsrv_access(vp, VWRITE, cred, rdonly, td, 0))
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198 nfsmode &= ~testmode;
199 if (vp->v_type == VDIR)
200 testmode = NFSV3ACCESS_LOOKUP;
201 else
202 testmode = NFSV3ACCESS_EXECUTE;
203 if ((nfsmode & testmode) &&
dadab5e9 204 nfsrv_access(vp, VEXEC, cred, rdonly, td, 0))
984263bc 205 nfsmode &= ~testmode;
3b568787 206 getret = VOP_GETATTR(vp, vap, td);
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207 vput(vp);
208 vp = NULL;
209 nfsm_reply(NFSX_POSTOPATTR(1) + NFSX_UNSIGNED);
210 nfsm_srvpostop_attr(getret, vap);
211 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
212 *tl = txdr_unsigned(nfsmode);
213nfsmout:
214 if (vp)
215 vput(vp);
216 return(error);
217}
218
219/*
220 * nfs getattr service
221 */
222int
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223nfsrv_getattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
224 struct thread *td, struct mbuf **mrq)
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225{
226 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
227 struct sockaddr *nam = nfsd->nd_nam;
228 caddr_t dpos = nfsd->nd_dpos;
229 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 230 struct nfs_fattr *fp;
984263bc 231 struct vattr va;
dadab5e9 232 struct vattr *vap = &va;
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233 struct vnode *vp = NULL;
234 nfsfh_t nfh;
235 fhandle_t *fhp;
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236 u_int32_t *tl;
237 int32_t t1;
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238 caddr_t bpos;
239 int error = 0, rdonly, cache;
240 char *cp2;
241 struct mbuf *mb, *mb2, *mreq;
242 u_quad_t frev;
243
244 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
245 fhp = &nfh.fh_generic;
246 nfsm_srvmtofh(fhp);
247 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
248 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
249 if (error) {
250 nfsm_reply(0);
251 error = 0;
252 goto nfsmout;
253 }
254 nqsrv_getl(vp, ND_READ);
3b568787 255 error = VOP_GETATTR(vp, vap, td);
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256 vput(vp);
257 vp = NULL;
258 nfsm_reply(NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
259 if (error) {
260 error = 0;
261 goto nfsmout;
262 }
263 nfsm_build(fp, struct nfs_fattr *, NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
264 nfsm_srvfillattr(vap, fp);
265 /* fall through */
266
267nfsmout:
268 if (vp)
269 vput(vp);
270 return(error);
271}
272
273/*
274 * nfs setattr service
275 */
276int
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277nfsrv_setattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
278 struct thread *td, struct mbuf **mrq)
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279{
280 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
281 struct sockaddr *nam = nfsd->nd_nam;
282 caddr_t dpos = nfsd->nd_dpos;
283 struct ucred *cred = &nfsd->nd_cr;
284 struct vattr va, preat;
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285 struct vattr *vap = &va;
286 struct nfsv2_sattr *sp;
287 struct nfs_fattr *fp;
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288 struct vnode *vp = NULL;
289 nfsfh_t nfh;
290 fhandle_t *fhp;
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291 u_int32_t *tl;
292 int32_t t1;
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293 caddr_t bpos;
294 int error = 0, rdonly, cache, preat_ret = 1, postat_ret = 1;
295 int v3 = (nfsd->nd_flag & ND_NFSV3), gcheck = 0;
296 char *cp2;
297 struct mbuf *mb, *mb2, *mreq;
298 u_quad_t frev;
299 struct timespec guard;
300
301 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
302 fhp = &nfh.fh_generic;
303 nfsm_srvmtofh(fhp);
304 VATTR_NULL(vap);
305 if (v3) {
306 nfsm_srvsattr(vap);
307 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
308 gcheck = fxdr_unsigned(int, *tl);
309 if (gcheck) {
310 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
311 fxdr_nfsv3time(tl, &guard);
312 }
313 } else {
314 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
315 /*
316 * Nah nah nah nah na nah
317 * There is a bug in the Sun client that puts 0xffff in the mode
318 * field of sattr when it should put in 0xffffffff. The u_short
319 * doesn't sign extend.
320 * --> check the low order 2 bytes for 0xffff
321 */
322 if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff)
323 vap->va_mode = nfstov_mode(sp->sa_mode);
324 if (sp->sa_uid != nfs_xdrneg1)
325 vap->va_uid = fxdr_unsigned(uid_t, sp->sa_uid);
326 if (sp->sa_gid != nfs_xdrneg1)
327 vap->va_gid = fxdr_unsigned(gid_t, sp->sa_gid);
328 if (sp->sa_size != nfs_xdrneg1)
329 vap->va_size = fxdr_unsigned(u_quad_t, sp->sa_size);
330 if (sp->sa_atime.nfsv2_sec != nfs_xdrneg1) {
331#ifdef notyet
332 fxdr_nfsv2time(&sp->sa_atime, &vap->va_atime);
333#else
334 vap->va_atime.tv_sec =
335 fxdr_unsigned(int32_t, sp->sa_atime.nfsv2_sec);
336 vap->va_atime.tv_nsec = 0;
337#endif
338 }
339 if (sp->sa_mtime.nfsv2_sec != nfs_xdrneg1)
340 fxdr_nfsv2time(&sp->sa_mtime, &vap->va_mtime);
341
342 }
343
344 /*
345 * Now that we have all the fields, lets do it.
346 */
347 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly,
348 (nfsd->nd_flag & ND_KERBAUTH), TRUE);
349 if (error) {
350 nfsm_reply(2 * NFSX_UNSIGNED);
351 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
352 error = 0;
353 goto nfsmout;
354 }
355
356 /*
357 * vp now an active resource, pay careful attention to cleanup
358 */
359
360 nqsrv_getl(vp, ND_WRITE);
361 if (v3) {
3b568787 362 error = preat_ret = VOP_GETATTR(vp, &preat, td);
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363 if (!error && gcheck &&
364 (preat.va_ctime.tv_sec != guard.tv_sec ||
365 preat.va_ctime.tv_nsec != guard.tv_nsec))
366 error = NFSERR_NOT_SYNC;
367 if (error) {
368 vput(vp);
369 vp = NULL;
370 nfsm_reply(NFSX_WCCDATA(v3));
371 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
372 error = 0;
373 goto nfsmout;
374 }
375 }
376
377 /*
378 * If the size is being changed write acces is required, otherwise
379 * just check for a read only file system.
380 */
381 if (vap->va_size == ((u_quad_t)((quad_t) -1))) {
382 if (rdonly || (vp->v_mount->mnt_flag & MNT_RDONLY)) {
383 error = EROFS;
384 goto out;
385 }
386 } else {
387 if (vp->v_type == VDIR) {
388 error = EISDIR;
389 goto out;
390 } else if ((error = nfsrv_access(vp, VWRITE, cred, rdonly,
dadab5e9 391 td, 0)) != 0){
984263bc 392 goto out;
dadab5e9 393 }
984263bc 394 }
dadab5e9 395 error = VOP_SETATTR(vp, vap, cred, td);
3b568787 396 postat_ret = VOP_GETATTR(vp, vap, td);
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MD
397 if (!error)
398 error = postat_ret;
399out:
400 vput(vp);
401 vp = NULL;
402 nfsm_reply(NFSX_WCCORFATTR(v3));
403 if (v3) {
404 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
405 error = 0;
406 goto nfsmout;
407 } else {
408 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
409 nfsm_srvfillattr(vap, fp);
410 }
411 /* fall through */
412
413nfsmout:
414 if (vp)
415 vput(vp);
416 return(error);
417}
418
419/*
420 * nfs lookup rpc
421 */
422int
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423nfsrv_lookup(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
424 struct thread *td, struct mbuf **mrq)
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425{
426 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
427 struct sockaddr *nam = nfsd->nd_nam;
428 caddr_t dpos = nfsd->nd_dpos;
429 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 430 struct nfs_fattr *fp;
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MD
431 struct nlookupdata nd;
432 struct vnode *vp;
433 struct vnode *dirp;
434 struct namecache *ncp;
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435 nfsfh_t nfh;
436 fhandle_t *fhp;
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437 caddr_t cp;
438 u_int32_t *tl;
439 int32_t t1;
984263bc 440 caddr_t bpos;
5df949e9 441 int error = 0, cache = 0, len, dirattr_ret = 1;
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442 int v3 = (nfsd->nd_flag & ND_NFSV3), pubflag;
443 char *cp2;
444 struct mbuf *mb, *mb2, *mreq;
445 struct vattr va, dirattr, *vap = &va;
446 u_quad_t frev;
447
448 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
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449 nlookup_zero(&nd);
450 dirp = NULL;
451 vp = NULL;
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452
453 fhp = &nfh.fh_generic;
454 nfsm_srvmtofh(fhp);
455 nfsm_srvnamesiz(len);
456
457 pubflag = nfs_ispublicfh(fhp);
458
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459 error = nfs_namei(&nd, cred, NAMEI_LOOKUP, NULL, &vp,
460 fhp, len, slp, nam, &md, &dpos,
dadab5e9 461 &dirp, td, (nfsd->nd_flag & ND_KERBAUTH), pubflag);
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462
463 /*
464 * namei failure, only dirp to cleanup. Clear out garbarge from
465 * structure in case macros jump to nfsmout.
466 */
467
468 if (error) {
469 if (dirp) {
470 if (v3)
3b568787 471 dirattr_ret = VOP_GETATTR(dirp, &dirattr, td);
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472 vrele(dirp);
473 dirp = NULL;
474 }
475 nfsm_reply(NFSX_POSTOPATTR(v3));
476 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
477 error = 0;
478 goto nfsmout;
479 }
480
481 /*
482 * Locate index file for public filehandle
483 *
484 * error is 0 on entry and 0 on exit from this block.
485 */
486
487 if (pubflag) {
fad57d0e 488 if (vp->v_type == VDIR && nfs_pub.np_index != NULL) {
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489 /*
490 * Setup call to lookup() to see if we can find
491 * the index file. Arguably, this doesn't belong
492 * in a kernel.. Ugh. If an error occurs, do not
493 * try to install an index file and then clear the
494 * error.
495 *
496 * When we replace nd with ind and redirect ndp,
497 * maintenance of ni_startdir and ni_vp shift to
498 * ind and we have to clean them up in the old nd.
499 * However, the cnd resource continues to be maintained
500 * via the original nd. Confused? You aren't alone!
501 */
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502 VOP_UNLOCK(vp, 0, td);
503 ncp = cache_hold(nd.nl_ncp);
504 nlookup_done(&nd);
505 error = nlookup_init_raw(&nd, nfs_pub.np_index,
506 UIO_SYSSPACE, 0, cred, ncp);
507 cache_drop(ncp);
508 if (error == 0)
509 error = nlookup(&nd);
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510
511 if (error == 0) {
512 /*
513 * Found an index file. Get rid of
fad57d0e
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514 * the old references. transfer vp and
515 * load up the new vp. Fortunately we do
516 * not have to deal with dvp, that would be
517 * a huge mess.
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518 */
519 if (dirp)
520 vrele(dirp);
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521 dirp = vp;
522 vp = NULL;
523 error = cache_vget(nd.nl_ncp, nd.nl_cred,
524 LK_EXCLUSIVE, &vp);
525 KKASSERT(error == 0);
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526 }
527 error = 0;
528 }
529 /*
530 * If the public filehandle was used, check that this lookup
531 * didn't result in a filehandle outside the publicly exported
532 * filesystem. We clear the poor vp here to avoid lockups due
533 * to NFS I/O.
534 */
535
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536 if (vp->v_mount != nfs_pub.np_mount) {
537 vput(vp);
538 vp = NULL;
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539 error = EPERM;
540 }
541 }
542
543 if (dirp) {
544 if (v3)
3b568787 545 dirattr_ret = VOP_GETATTR(dirp, &dirattr, td);
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546 vrele(dirp);
547 dirp = NULL;
548 }
549
550 /*
551 * Resources at this point:
552 * ndp->ni_vp may not be NULL
553 *
554 */
555
556 if (error) {
557 nfsm_reply(NFSX_POSTOPATTR(v3));
558 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
559 error = 0;
560 goto nfsmout;
561 }
562
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563#if 0
564 /* XXX not sure how to deal with this */
984263bc 565 nqsrv_getl(ndp->ni_startdir, ND_READ);
fad57d0e 566#endif
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567
568 /*
569 * Clear out some resources prior to potentially blocking. This
570 * is not as critical as ni_dvp resources in other routines, but
571 * it helps.
572 */
fad57d0e 573 nlookup_done(&nd);
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574
575 /*
576 * Get underlying attribute, then release remaining resources ( for
577 * the same potential blocking reason ) and reply.
578 */
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579 bzero((caddr_t)fhp, sizeof(nfh));
580 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
581 error = VFS_VPTOFH(vp, &fhp->fh_fid);
582 if (!error)
3b568787 583 error = VOP_GETATTR(vp, vap, td);
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MD
584
585 vput(vp);
fad57d0e 586 vp = NULL;
984263bc
MD
587 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPORFATTR(v3) + NFSX_POSTOPATTR(v3));
588 if (error) {
589 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
590 error = 0;
591 goto nfsmout;
592 }
593 nfsm_srvfhtom(fhp, v3);
594 if (v3) {
595 nfsm_srvpostop_attr(0, vap);
596 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
597 } else {
598 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
599 nfsm_srvfillattr(vap, fp);
600 }
601
602nfsmout:
603 if (dirp)
604 vrele(dirp);
fad57d0e
MD
605 nlookup_done(&nd); /* may be called twice */
606 if (vp)
607 vput(vp);
984263bc
MD
608 return (error);
609}
610
611/*
612 * nfs readlink service
613 */
614int
e851b29e
CP
615nfsrv_readlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
616 struct thread *td, struct mbuf **mrq)
984263bc
MD
617{
618 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
619 struct sockaddr *nam = nfsd->nd_nam;
620 caddr_t dpos = nfsd->nd_dpos;
621 struct ucred *cred = &nfsd->nd_cr;
622 struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN];
dadab5e9
MD
623 struct iovec *ivp = iv;
624 struct mbuf *mp;
625 u_int32_t *tl;
626 int32_t t1;
984263bc
MD
627 caddr_t bpos;
628 int error = 0, rdonly, cache, i, tlen, len, getret;
629 int v3 = (nfsd->nd_flag & ND_NFSV3);
630 char *cp2;
631 struct mbuf *mb, *mb2, *mp2, *mp3, *mreq;
632 struct vnode *vp = NULL;
633 struct vattr attr;
634 nfsfh_t nfh;
635 fhandle_t *fhp;
636 struct uio io, *uiop = &io;
637 u_quad_t frev;
638
639 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
640#ifndef nolint
641 mp2 = (struct mbuf *)0;
642#endif
643 mp3 = NULL;
644 fhp = &nfh.fh_generic;
645 nfsm_srvmtofh(fhp);
646 len = 0;
647 i = 0;
648 while (len < NFS_MAXPATHLEN) {
74f1caca
EN
649 MGET(mp, MB_WAIT, MT_DATA);
650 MCLGET(mp, MB_WAIT);
984263bc
MD
651 mp->m_len = NFSMSIZ(mp);
652 if (len == 0)
653 mp3 = mp2 = mp;
654 else {
655 mp2->m_next = mp;
656 mp2 = mp;
657 }
658 if ((len+mp->m_len) > NFS_MAXPATHLEN) {
659 mp->m_len = NFS_MAXPATHLEN-len;
660 len = NFS_MAXPATHLEN;
661 } else
662 len += mp->m_len;
663 ivp->iov_base = mtod(mp, caddr_t);
664 ivp->iov_len = mp->m_len;
665 i++;
666 ivp++;
667 }
668 uiop->uio_iov = iv;
669 uiop->uio_iovcnt = i;
670 uiop->uio_offset = 0;
671 uiop->uio_resid = len;
672 uiop->uio_rw = UIO_READ;
673 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 674 uiop->uio_td = NULL;
984263bc
MD
675 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
676 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
677 if (error) {
678 nfsm_reply(2 * NFSX_UNSIGNED);
679 nfsm_srvpostop_attr(1, (struct vattr *)0);
680 error = 0;
681 goto nfsmout;
682 }
683 if (vp->v_type != VLNK) {
684 if (v3)
685 error = EINVAL;
686 else
687 error = ENXIO;
688 goto out;
689 }
690 nqsrv_getl(vp, ND_READ);
691 error = VOP_READLINK(vp, uiop, cred);
692out:
3b568787 693 getret = VOP_GETATTR(vp, &attr, td);
984263bc
MD
694 vput(vp);
695 vp = NULL;
696 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_UNSIGNED);
697 if (v3) {
698 nfsm_srvpostop_attr(getret, &attr);
699 if (error) {
700 error = 0;
701 goto nfsmout;
702 }
703 }
704 if (uiop->uio_resid > 0) {
705 len -= uiop->uio_resid;
706 tlen = nfsm_rndup(len);
707 nfsm_adj(mp3, NFS_MAXPATHLEN-tlen, tlen-len);
708 }
709 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
710 *tl = txdr_unsigned(len);
711 mb->m_next = mp3;
712 mp3 = NULL;
713nfsmout:
714 if (mp3)
715 m_freem(mp3);
716 if (vp)
717 vput(vp);
718 return(error);
719}
720
721/*
722 * nfs read service
723 */
724int
e851b29e
CP
725nfsrv_read(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
726 struct thread *td, struct mbuf **mrq)
984263bc
MD
727{
728 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
729 struct sockaddr *nam = nfsd->nd_nam;
730 caddr_t dpos = nfsd->nd_dpos;
731 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 732 struct iovec *iv;
984263bc 733 struct iovec *iv2;
dadab5e9
MD
734 struct mbuf *m;
735 struct nfs_fattr *fp;
736 u_int32_t *tl;
737 int32_t t1;
738 int i;
984263bc
MD
739 caddr_t bpos;
740 int error = 0, rdonly, cache, cnt, len, left, siz, tlen, getret;
741 int v3 = (nfsd->nd_flag & ND_NFSV3), reqlen;
742 char *cp2;
743 struct mbuf *mb, *mb2, *mreq;
744 struct mbuf *m2;
745 struct vnode *vp = NULL;
746 nfsfh_t nfh;
747 fhandle_t *fhp;
748 struct uio io, *uiop = &io;
749 struct vattr va, *vap = &va;
750 struct nfsheur *nh;
751 off_t off;
752 int ioflag = 0;
753 u_quad_t frev;
754
755 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
756 fhp = &nfh.fh_generic;
757 nfsm_srvmtofh(fhp);
758 if (v3) {
759 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
760 off = fxdr_hyper(tl);
761 } else {
762 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
763 off = (off_t)fxdr_unsigned(u_int32_t, *tl);
764 }
765 nfsm_srvstrsiz(reqlen, NFS_SRVMAXDATA(nfsd));
766
767 /*
768 * Reference vp. If an error occurs, vp will be invalid, but we
769 * have to NULL it just in case. The macros might goto nfsmout
770 * as well.
771 */
772
773 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
774 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
775 if (error) {
776 vp = NULL;
777 nfsm_reply(2 * NFSX_UNSIGNED);
778 nfsm_srvpostop_attr(1, (struct vattr *)0);
779 error = 0;
780 goto nfsmout;
781 }
782
783 if (vp->v_type != VREG) {
784 if (v3)
785 error = EINVAL;
786 else
787 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
788 }
789 if (!error) {
790 nqsrv_getl(vp, ND_READ);
dadab5e9
MD
791 if ((error = nfsrv_access(vp, VREAD, cred, rdonly, td, 1)) != 0)
792 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 1);
984263bc 793 }
3b568787 794 getret = VOP_GETATTR(vp, vap, td);
984263bc
MD
795 if (!error)
796 error = getret;
797 if (error) {
798 vput(vp);
799 vp = NULL;
800 nfsm_reply(NFSX_POSTOPATTR(v3));
801 nfsm_srvpostop_attr(getret, vap);
802 error = 0;
803 goto nfsmout;
804 }
805
806 /*
807 * Calculate byte count to read
808 */
809
810 if (off >= vap->va_size)
811 cnt = 0;
812 else if ((off + reqlen) > vap->va_size)
813 cnt = vap->va_size - off;
814 else
815 cnt = reqlen;
816
817 /*
818 * Calculate seqcount for heuristic
819 */
820
821 {
822 int hi;
053a4ed4 823 int try = 32;
984263bc
MD
824
825 /*
826 * Locate best candidate
827 */
828
053a4ed4 829 hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC;
984263bc
MD
830 nh = &nfsheur[hi];
831
832 while (try--) {
833 if (nfsheur[hi].nh_vp == vp) {
834 nh = &nfsheur[hi];
835 break;
836 }
837 if (nfsheur[hi].nh_use > 0)
838 --nfsheur[hi].nh_use;
053a4ed4 839 hi = (hi + 1) % NUM_HEURISTIC;
984263bc
MD
840 if (nfsheur[hi].nh_use < nh->nh_use)
841 nh = &nfsheur[hi];
842 }
843
844 if (nh->nh_vp != vp) {
845 nh->nh_vp = vp;
846 nh->nh_nextr = off;
847 nh->nh_use = NHUSE_INIT;
848 if (off == 0)
849 nh->nh_seqcount = 4;
850 else
851 nh->nh_seqcount = 1;
852 }
853
854 /*
855 * Calculate heuristic
856 */
857
858 if ((off == 0 && nh->nh_seqcount > 0) || off == nh->nh_nextr) {
859 if (++nh->nh_seqcount > IO_SEQMAX)
860 nh->nh_seqcount = IO_SEQMAX;
861 } else if (nh->nh_seqcount > 1) {
862 nh->nh_seqcount = 1;
863 } else {
864 nh->nh_seqcount = 0;
865 }
866 nh->nh_use += NHUSE_INC;
867 if (nh->nh_use > NHUSE_MAX)
868 nh->nh_use = NHUSE_MAX;
869 ioflag |= nh->nh_seqcount << IO_SEQSHIFT;
870 }
871
872 nfsm_reply(NFSX_POSTOPORFATTR(v3) + 3 * NFSX_UNSIGNED+nfsm_rndup(cnt));
873 if (v3) {
874 nfsm_build(tl, u_int32_t *, NFSX_V3FATTR + 4 * NFSX_UNSIGNED);
875 *tl++ = nfs_true;
876 fp = (struct nfs_fattr *)tl;
877 tl += (NFSX_V3FATTR / sizeof (u_int32_t));
878 } else {
879 nfsm_build(tl, u_int32_t *, NFSX_V2FATTR + NFSX_UNSIGNED);
880 fp = (struct nfs_fattr *)tl;
881 tl += (NFSX_V2FATTR / sizeof (u_int32_t));
882 }
883 len = left = nfsm_rndup(cnt);
884 if (cnt > 0) {
885 /*
886 * Generate the mbuf list with the uio_iov ref. to it.
887 */
888 i = 0;
889 m = m2 = mb;
890 while (left > 0) {
891 siz = min(M_TRAILINGSPACE(m), left);
892 if (siz > 0) {
893 left -= siz;
894 i++;
895 }
896 if (left > 0) {
74f1caca
EN
897 MGET(m, MB_WAIT, MT_DATA);
898 MCLGET(m, MB_WAIT);
984263bc
MD
899 m->m_len = 0;
900 m2->m_next = m;
901 m2 = m;
902 }
903 }
904 MALLOC(iv, struct iovec *, i * sizeof (struct iovec),
905 M_TEMP, M_WAITOK);
906 uiop->uio_iov = iv2 = iv;
907 m = mb;
908 left = len;
909 i = 0;
910 while (left > 0) {
911 if (m == NULL)
912 panic("nfsrv_read iov");
913 siz = min(M_TRAILINGSPACE(m), left);
914 if (siz > 0) {
915 iv->iov_base = mtod(m, caddr_t) + m->m_len;
916 iv->iov_len = siz;
917 m->m_len += siz;
918 left -= siz;
919 iv++;
920 i++;
921 }
922 m = m->m_next;
923 }
924 uiop->uio_iovcnt = i;
925 uiop->uio_offset = off;
926 uiop->uio_resid = len;
927 uiop->uio_rw = UIO_READ;
928 uiop->uio_segflg = UIO_SYSSPACE;
929 error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred);
930 off = uiop->uio_offset;
931 nh->nh_nextr = off;
932 FREE((caddr_t)iv2, M_TEMP);
3b568787 933 if (error || (getret = VOP_GETATTR(vp, vap, td))) {
984263bc
MD
934 if (!error)
935 error = getret;
936 m_freem(mreq);
937 vput(vp);
938 vp = NULL;
939 nfsm_reply(NFSX_POSTOPATTR(v3));
940 nfsm_srvpostop_attr(getret, vap);
941 error = 0;
942 goto nfsmout;
943 }
944 } else {
945 uiop->uio_resid = 0;
946 }
947 vput(vp);
948 vp = NULL;
949 nfsm_srvfillattr(vap, fp);
950 tlen = len - uiop->uio_resid;
951 cnt = cnt < tlen ? cnt : tlen;
952 tlen = nfsm_rndup(cnt);
953 if (len != tlen || tlen != cnt)
954 nfsm_adj(mb, len - tlen, tlen - cnt);
955 if (v3) {
956 *tl++ = txdr_unsigned(cnt);
957 if (len < reqlen)
958 *tl++ = nfs_true;
959 else
960 *tl++ = nfs_false;
961 }
962 *tl = txdr_unsigned(cnt);
963nfsmout:
964 if (vp)
965 vput(vp);
966 return(error);
967}
968
969/*
970 * nfs write service
971 */
972int
e851b29e
CP
973nfsrv_write(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
974 struct thread *td, struct mbuf **mrq)
984263bc
MD
975{
976 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
977 struct sockaddr *nam = nfsd->nd_nam;
978 caddr_t dpos = nfsd->nd_dpos;
979 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
980 struct iovec *ivp;
981 int i, cnt;
982 struct mbuf *mp;
983 struct nfs_fattr *fp;
984263bc
MD
984 struct iovec *iv;
985 struct vattr va, forat;
dadab5e9
MD
986 struct vattr *vap = &va;
987 u_int32_t *tl;
988 int32_t t1;
984263bc
MD
989 caddr_t bpos;
990 int error = 0, rdonly, cache, len, forat_ret = 1;
991 int ioflags, aftat_ret = 1, retlen, zeroing, adjust;
992 int stable = NFSV3WRITE_FILESYNC;
993 int v3 = (nfsd->nd_flag & ND_NFSV3);
994 char *cp2;
995 struct mbuf *mb, *mb2, *mreq;
996 struct vnode *vp = NULL;
997 nfsfh_t nfh;
998 fhandle_t *fhp;
999 struct uio io, *uiop = &io;
1000 off_t off;
1001 u_quad_t frev;
1002
1003 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
1004 if (mrep == NULL) {
1005 *mrq = NULL;
1006 error = 0;
1007 goto nfsmout;
1008 }
1009 fhp = &nfh.fh_generic;
1010 nfsm_srvmtofh(fhp);
1011 if (v3) {
1012 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1013 off = fxdr_hyper(tl);
1014 tl += 3;
1015 stable = fxdr_unsigned(int, *tl++);
1016 } else {
1017 nfsm_dissect(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1018 off = (off_t)fxdr_unsigned(u_int32_t, *++tl);
1019 tl += 2;
1020 if (nfs_async)
1021 stable = NFSV3WRITE_UNSTABLE;
1022 }
1023 retlen = len = fxdr_unsigned(int32_t, *tl);
1024 cnt = i = 0;
1025
1026 /*
1027 * For NFS Version 2, it is not obvious what a write of zero length
1028 * should do, but I might as well be consistent with Version 3,
1029 * which is to return ok so long as there are no permission problems.
1030 */
1031 if (len > 0) {
1032 zeroing = 1;
1033 mp = mrep;
1034 while (mp) {
1035 if (mp == md) {
1036 zeroing = 0;
1037 adjust = dpos - mtod(mp, caddr_t);
1038 mp->m_len -= adjust;
1039 if (mp->m_len > 0 && adjust > 0)
1040 NFSMADV(mp, adjust);
1041 }
1042 if (zeroing)
1043 mp->m_len = 0;
1044 else if (mp->m_len > 0) {
1045 i += mp->m_len;
1046 if (i > len) {
1047 mp->m_len -= (i - len);
1048 zeroing = 1;
1049 }
1050 if (mp->m_len > 0)
1051 cnt++;
1052 }
1053 mp = mp->m_next;
1054 }
1055 }
1056 if (len > NFS_MAXDATA || len < 0 || i < len) {
1057 error = EIO;
1058 nfsm_reply(2 * NFSX_UNSIGNED);
1059 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1060 error = 0;
1061 goto nfsmout;
1062 }
1063 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
1064 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
1065 if (error) {
1066 vp = NULL;
1067 nfsm_reply(2 * NFSX_UNSIGNED);
1068 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1069 error = 0;
1070 goto nfsmout;
1071 }
1072 if (v3)
3b568787 1073 forat_ret = VOP_GETATTR(vp, &forat, td);
984263bc
MD
1074 if (vp->v_type != VREG) {
1075 if (v3)
1076 error = EINVAL;
1077 else
1078 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
1079 }
1080 if (!error) {
1081 nqsrv_getl(vp, ND_WRITE);
dadab5e9 1082 error = nfsrv_access(vp, VWRITE, cred, rdonly, td, 1);
984263bc
MD
1083 }
1084 if (error) {
1085 vput(vp);
1086 vp = NULL;
1087 nfsm_reply(NFSX_WCCDATA(v3));
1088 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1089 error = 0;
1090 goto nfsmout;
1091 }
1092
1093 if (len > 0) {
1094 MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP,
1095 M_WAITOK);
1096 uiop->uio_iov = iv = ivp;
1097 uiop->uio_iovcnt = cnt;
1098 mp = mrep;
1099 while (mp) {
1100 if (mp->m_len > 0) {
1101 ivp->iov_base = mtod(mp, caddr_t);
1102 ivp->iov_len = mp->m_len;
1103 ivp++;
1104 }
1105 mp = mp->m_next;
1106 }
1107
1108 /*
1109 * XXX
1110 * The IO_METASYNC flag indicates that all metadata (and not just
1111 * enough to ensure data integrity) mus be written to stable storage
1112 * synchronously.
1113 * (IO_METASYNC is not yet implemented in 4.4BSD-Lite.)
1114 */
1115 if (stable == NFSV3WRITE_UNSTABLE)
1116 ioflags = IO_NODELOCKED;
1117 else if (stable == NFSV3WRITE_DATASYNC)
1118 ioflags = (IO_SYNC | IO_NODELOCKED);
1119 else
1120 ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
1121 uiop->uio_resid = len;
1122 uiop->uio_rw = UIO_WRITE;
1123 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 1124 uiop->uio_td = NULL;
984263bc
MD
1125 uiop->uio_offset = off;
1126 error = VOP_WRITE(vp, uiop, ioflags, cred);
1127 nfsstats.srvvop_writes++;
1128 FREE((caddr_t)iv, M_TEMP);
1129 }
3b568787 1130 aftat_ret = VOP_GETATTR(vp, vap, td);
984263bc
MD
1131 vput(vp);
1132 vp = NULL;
1133 if (!error)
1134 error = aftat_ret;
1135 nfsm_reply(NFSX_PREOPATTR(v3) + NFSX_POSTOPORFATTR(v3) +
1136 2 * NFSX_UNSIGNED + NFSX_WRITEVERF(v3));
1137 if (v3) {
1138 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1139 if (error) {
1140 error = 0;
1141 goto nfsmout;
1142 }
1143 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1144 *tl++ = txdr_unsigned(retlen);
1145 /*
1146 * If nfs_async is set, then pretend the write was FILESYNC.
1147 */
1148 if (stable == NFSV3WRITE_UNSTABLE && !nfs_async)
1149 *tl++ = txdr_unsigned(stable);
1150 else
1151 *tl++ = txdr_unsigned(NFSV3WRITE_FILESYNC);
1152 /*
1153 * Actually, there is no need to txdr these fields,
1154 * but it may make the values more human readable,
1155 * for debugging purposes.
1156 */
1157 if (nfsver.tv_sec == 0)
1158 nfsver = boottime;
1159 *tl++ = txdr_unsigned(nfsver.tv_sec);
3a6f9faf 1160 *tl = txdr_unsigned(nfsver.tv_nsec / 1000);
984263bc
MD
1161 } else {
1162 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1163 nfsm_srvfillattr(vap, fp);
1164 }
1165nfsmout:
1166 if (vp)
1167 vput(vp);
1168 return(error);
1169}
1170
1171/*
1172 * NFS write service with write gathering support. Called when
1173 * nfsrvw_procrastinate > 0.
1174 * See: Chet Juszczak, "Improving the Write Performance of an NFS Server",
1175 * in Proc. of the Winter 1994 Usenix Conference, pg. 247-259, San Franscisco,
1176 * Jan. 1994.
1177 */
1178int
e851b29e
CP
1179nfsrv_writegather(struct nfsrv_descript **ndp, struct nfssvc_sock *slp,
1180 struct thread *td, struct mbuf **mrq)
984263bc 1181{
dadab5e9
MD
1182 struct iovec *ivp;
1183 struct mbuf *mp;
1184 struct nfsrv_descript *wp, *nfsd, *owp, *swp;
1185 struct nfs_fattr *fp;
1186 int i;
984263bc
MD
1187 struct iovec *iov;
1188 struct nfsrvw_delayhash *wpp;
1189 struct ucred *cred;
1190 struct vattr va, forat;
dadab5e9
MD
1191 u_int32_t *tl;
1192 int32_t t1;
984263bc
MD
1193 caddr_t bpos, dpos;
1194 int error = 0, rdonly, cache, len, forat_ret = 1;
1195 int ioflags, aftat_ret = 1, s, adjust, v3, zeroing;
1196 char *cp2;
1197 struct mbuf *mb, *mb2, *mreq, *mrep, *md;
1198 struct vnode *vp = NULL;
1199 struct uio io, *uiop = &io;
1200 u_quad_t frev, cur_usec;
1201
1202 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
1203#ifndef nolint
1204 i = 0;
1205 len = 0;
1206#endif
1207 *mrq = NULL;
1208 if (*ndp) {
1209 nfsd = *ndp;
1210 *ndp = NULL;
1211 mrep = nfsd->nd_mrep;
1212 md = nfsd->nd_md;
1213 dpos = nfsd->nd_dpos;
1214 cred = &nfsd->nd_cr;
1215 v3 = (nfsd->nd_flag & ND_NFSV3);
1216 LIST_INIT(&nfsd->nd_coalesce);
1217 nfsd->nd_mreq = NULL;
1218 nfsd->nd_stable = NFSV3WRITE_FILESYNC;
1219 cur_usec = nfs_curusec();
1220 nfsd->nd_time = cur_usec +
1221 (v3 ? nfsrvw_procrastinate_v3 : nfsrvw_procrastinate);
1222
1223 /*
1224 * Now, get the write header..
1225 */
1226 nfsm_srvmtofh(&nfsd->nd_fh);
1227 if (v3) {
1228 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1229 nfsd->nd_off = fxdr_hyper(tl);
1230 tl += 3;
1231 nfsd->nd_stable = fxdr_unsigned(int, *tl++);
1232 } else {
1233 nfsm_dissect(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1234 nfsd->nd_off = (off_t)fxdr_unsigned(u_int32_t, *++tl);
1235 tl += 2;
1236 if (nfs_async)
1237 nfsd->nd_stable = NFSV3WRITE_UNSTABLE;
1238 }
1239 len = fxdr_unsigned(int32_t, *tl);
1240 nfsd->nd_len = len;
1241 nfsd->nd_eoff = nfsd->nd_off + len;
1242
1243 /*
1244 * Trim the header out of the mbuf list and trim off any trailing
1245 * junk so that the mbuf list has only the write data.
1246 */
1247 zeroing = 1;
1248 i = 0;
1249 mp = mrep;
1250 while (mp) {
1251 if (mp == md) {
1252 zeroing = 0;
1253 adjust = dpos - mtod(mp, caddr_t);
1254 mp->m_len -= adjust;
1255 if (mp->m_len > 0 && adjust > 0)
1256 NFSMADV(mp, adjust);
1257 }
1258 if (zeroing)
1259 mp->m_len = 0;
1260 else {
1261 i += mp->m_len;
1262 if (i > len) {
1263 mp->m_len -= (i - len);
1264 zeroing = 1;
1265 }
1266 }
1267 mp = mp->m_next;
1268 }
1269 if (len > NFS_MAXDATA || len < 0 || i < len) {
1270nfsmout:
1271 m_freem(mrep);
1272 error = EIO;
1273 nfsm_writereply(2 * NFSX_UNSIGNED, v3);
1274 if (v3)
1275 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1276 nfsd->nd_mreq = mreq;
1277 nfsd->nd_mrep = NULL;
1278 nfsd->nd_time = 0;
1279 }
1280
1281 /*
1282 * Add this entry to the hash and time queues.
1283 */
1284 s = splsoftclock();
1285 owp = NULL;
1286 wp = slp->ns_tq.lh_first;
1287 while (wp && wp->nd_time < nfsd->nd_time) {
1288 owp = wp;
1289 wp = wp->nd_tq.le_next;
1290 }
1291 NFS_DPF(WG, ("Q%03x", nfsd->nd_retxid & 0xfff));
1292 if (owp) {
1293 LIST_INSERT_AFTER(owp, nfsd, nd_tq);
1294 } else {
1295 LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
1296 }
1297 if (nfsd->nd_mrep) {
1298 wpp = NWDELAYHASH(slp, nfsd->nd_fh.fh_fid.fid_data);
1299 owp = NULL;
1300 wp = wpp->lh_first;
1301 while (wp &&
1302 bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
1303 owp = wp;
1304 wp = wp->nd_hash.le_next;
1305 }
1306 while (wp && wp->nd_off < nfsd->nd_off &&
1307 !bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
1308 owp = wp;
1309 wp = wp->nd_hash.le_next;
1310 }
1311 if (owp) {
1312 LIST_INSERT_AFTER(owp, nfsd, nd_hash);
1313
1314 /*
1315 * Search the hash list for overlapping entries and
1316 * coalesce.
1317 */
1318 for(; nfsd && NFSW_CONTIG(owp, nfsd); nfsd = wp) {
1319 wp = nfsd->nd_hash.le_next;
1320 if (NFSW_SAMECRED(owp, nfsd))
1321 nfsrvw_coalesce(owp, nfsd);
1322 }
1323 } else {
1324 LIST_INSERT_HEAD(wpp, nfsd, nd_hash);
1325 }
1326 }
1327 splx(s);
1328 }
1329
1330 /*
1331 * Now, do VOP_WRITE()s for any one(s) that need to be done now
1332 * and generate the associated reply mbuf list(s).
1333 */
1334loop1:
1335 cur_usec = nfs_curusec();
1336 s = splsoftclock();
1337 for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = owp) {
1338 owp = nfsd->nd_tq.le_next;
1339 if (nfsd->nd_time > cur_usec)
1340 break;
1341 if (nfsd->nd_mreq)
1342 continue;
1343 NFS_DPF(WG, ("P%03x", nfsd->nd_retxid & 0xfff));
1344 LIST_REMOVE(nfsd, nd_tq);
1345 LIST_REMOVE(nfsd, nd_hash);
1346 splx(s);
1347 mrep = nfsd->nd_mrep;
1348 nfsd->nd_mrep = NULL;
1349 cred = &nfsd->nd_cr;
1350 v3 = (nfsd->nd_flag & ND_NFSV3);
1351 forat_ret = aftat_ret = 1;
1352 error = nfsrv_fhtovp(&nfsd->nd_fh, 1, &vp, cred, slp,
1353 nfsd->nd_nam, &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
1354 if (!error) {
1355 if (v3)
3b568787 1356 forat_ret = VOP_GETATTR(vp, &forat, td);
984263bc
MD
1357 if (vp->v_type != VREG) {
1358 if (v3)
1359 error = EINVAL;
1360 else
1361 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
1362 }
1363 } else {
1364 vp = NULL;
1365 }
1366 if (!error) {
1367 nqsrv_getl(vp, ND_WRITE);
dadab5e9 1368 error = nfsrv_access(vp, VWRITE, cred, rdonly, td, 1);
984263bc
MD
1369 }
1370
1371 if (nfsd->nd_stable == NFSV3WRITE_UNSTABLE)
1372 ioflags = IO_NODELOCKED;
1373 else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC)
1374 ioflags = (IO_SYNC | IO_NODELOCKED);
1375 else
1376 ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
1377 uiop->uio_rw = UIO_WRITE;
1378 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 1379 uiop->uio_td = NULL;
984263bc
MD
1380 uiop->uio_offset = nfsd->nd_off;
1381 uiop->uio_resid = nfsd->nd_eoff - nfsd->nd_off;
1382 if (uiop->uio_resid > 0) {
1383 mp = mrep;
1384 i = 0;
1385 while (mp) {
1386 if (mp->m_len > 0)
1387 i++;
1388 mp = mp->m_next;
1389 }
1390 uiop->uio_iovcnt = i;
1391 MALLOC(iov, struct iovec *, i * sizeof (struct iovec),
1392 M_TEMP, M_WAITOK);
1393 uiop->uio_iov = ivp = iov;
1394 mp = mrep;
1395 while (mp) {
1396 if (mp->m_len > 0) {
1397 ivp->iov_base = mtod(mp, caddr_t);
1398 ivp->iov_len = mp->m_len;
1399 ivp++;
1400 }
1401 mp = mp->m_next;
1402 }
1403 if (!error) {
1404 error = VOP_WRITE(vp, uiop, ioflags, cred);
1405 nfsstats.srvvop_writes++;
1406 }
1407 FREE((caddr_t)iov, M_TEMP);
1408 }
1409 m_freem(mrep);
1410 if (vp) {
3b568787 1411 aftat_ret = VOP_GETATTR(vp, &va, td);
984263bc
MD
1412 vput(vp);
1413 vp = NULL;
1414 }
1415
1416 /*
1417 * Loop around generating replies for all write rpcs that have
1418 * now been completed.
1419 */
1420 swp = nfsd;
1421 do {
1422 NFS_DPF(WG, ("R%03x", nfsd->nd_retxid & 0xfff));
1423 if (error) {
1424 nfsm_writereply(NFSX_WCCDATA(v3), v3);
1425 if (v3) {
1426 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1427 }
1428 } else {
1429 nfsm_writereply(NFSX_PREOPATTR(v3) +
1430 NFSX_POSTOPORFATTR(v3) + 2 * NFSX_UNSIGNED +
1431 NFSX_WRITEVERF(v3), v3);
1432 if (v3) {
1433 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1434 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1435 *tl++ = txdr_unsigned(nfsd->nd_len);
1436 *tl++ = txdr_unsigned(swp->nd_stable);
1437 /*
1438 * Actually, there is no need to txdr these fields,
1439 * but it may make the values more human readable,
1440 * for debugging purposes.
1441 */
1442 if (nfsver.tv_sec == 0)
1443 nfsver = boottime;
1444 *tl++ = txdr_unsigned(nfsver.tv_sec);
3a6f9faf 1445 *tl = txdr_unsigned(nfsver.tv_nsec / 1000);
984263bc
MD
1446 } else {
1447 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1448 nfsm_srvfillattr(&va, fp);
1449 }
1450 }
1451 nfsd->nd_mreq = mreq;
1452 if (nfsd->nd_mrep)
1453 panic("nfsrv_write: nd_mrep not free");
1454
1455 /*
1456 * Done. Put it at the head of the timer queue so that
1457 * the final phase can return the reply.
1458 */
1459 s = splsoftclock();
1460 if (nfsd != swp) {
1461 nfsd->nd_time = 0;
1462 LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
1463 }
1464 nfsd = swp->nd_coalesce.lh_first;
1465 if (nfsd) {
1466 LIST_REMOVE(nfsd, nd_tq);
1467 }
1468 splx(s);
1469 } while (nfsd);
1470 s = splsoftclock();
1471 swp->nd_time = 0;
1472 LIST_INSERT_HEAD(&slp->ns_tq, swp, nd_tq);
1473 splx(s);
1474 goto loop1;
1475 }
1476 splx(s);
1477
1478 /*
1479 * Search for a reply to return.
1480 */
1481 s = splsoftclock();
1482 for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = nfsd->nd_tq.le_next)
1483 if (nfsd->nd_mreq) {
1484 NFS_DPF(WG, ("X%03x", nfsd->nd_retxid & 0xfff));
1485 LIST_REMOVE(nfsd, nd_tq);
1486 *mrq = nfsd->nd_mreq;
1487 *ndp = nfsd;
1488 break;
1489 }
1490 splx(s);
1491 return (0);
1492}
1493
1494/*
1495 * Coalesce the write request nfsd into owp. To do this we must:
1496 * - remove nfsd from the queues
1497 * - merge nfsd->nd_mrep into owp->nd_mrep
1498 * - update the nd_eoff and nd_stable for owp
1499 * - put nfsd on owp's nd_coalesce list
1500 * NB: Must be called at splsoftclock().
1501 */
1502static void
dadab5e9 1503nfsrvw_coalesce(struct nfsrv_descript *owp, struct nfsrv_descript *nfsd)
984263bc 1504{
dadab5e9
MD
1505 int overlap;
1506 struct mbuf *mp;
984263bc
MD
1507 struct nfsrv_descript *p;
1508
1509 NFS_DPF(WG, ("C%03x-%03x",
1510 nfsd->nd_retxid & 0xfff, owp->nd_retxid & 0xfff));
1511 LIST_REMOVE(nfsd, nd_hash);
1512 LIST_REMOVE(nfsd, nd_tq);
1513 if (owp->nd_eoff < nfsd->nd_eoff) {
1514 overlap = owp->nd_eoff - nfsd->nd_off;
1515 if (overlap < 0)
1516 panic("nfsrv_coalesce: bad off");
1517 if (overlap > 0)
1518 m_adj(nfsd->nd_mrep, overlap);
1519 mp = owp->nd_mrep;
1520 while (mp->m_next)
1521 mp = mp->m_next;
1522 mp->m_next = nfsd->nd_mrep;
1523 owp->nd_eoff = nfsd->nd_eoff;
1524 } else
1525 m_freem(nfsd->nd_mrep);
1526 nfsd->nd_mrep = NULL;
1527 if (nfsd->nd_stable == NFSV3WRITE_FILESYNC)
1528 owp->nd_stable = NFSV3WRITE_FILESYNC;
1529 else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC &&
1530 owp->nd_stable == NFSV3WRITE_UNSTABLE)
1531 owp->nd_stable = NFSV3WRITE_DATASYNC;
1532 LIST_INSERT_HEAD(&owp->nd_coalesce, nfsd, nd_tq);
1533
1534 /*
1535 * If nfsd had anything else coalesced into it, transfer them
1536 * to owp, otherwise their replies will never get sent.
1537 */
1538 for (p = nfsd->nd_coalesce.lh_first; p;
1539 p = nfsd->nd_coalesce.lh_first) {
1540 LIST_REMOVE(p, nd_tq);
1541 LIST_INSERT_HEAD(&owp->nd_coalesce, p, nd_tq);
1542 }
1543}
1544
1545/*
1546 * nfs create service
1547 * now does a truncate to 0 length via. setattr if it already exists
1548 */
1549int
e851b29e
CP
1550nfsrv_create(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1551 struct thread *td, struct mbuf **mrq)
984263bc
MD
1552{
1553 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1554 struct sockaddr *nam = nfsd->nd_nam;
1555 caddr_t dpos = nfsd->nd_dpos;
1556 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 1557 struct nfs_fattr *fp;
984263bc 1558 struct vattr va, dirfor, diraft;
dadab5e9
MD
1559 struct vattr *vap = &va;
1560 struct nfsv2_sattr *sp;
1561 u_int32_t *tl;
fad57d0e 1562 struct nlookupdata nd;
dadab5e9 1563 int32_t t1;
984263bc
MD
1564 caddr_t bpos;
1565 int error = 0, rdev, cache, len, tsize, dirfor_ret = 1, diraft_ret = 1;
1566 int v3 = (nfsd->nd_flag & ND_NFSV3), how, exclusive_flag = 0;
1567 caddr_t cp;
1568 char *cp2;
1569 struct mbuf *mb, *mb2, *mreq;
fad57d0e
MD
1570 struct vnode *dirp;
1571 struct vnode *dvp;
1572 struct vnode *vp;
984263bc
MD
1573 nfsfh_t nfh;
1574 fhandle_t *fhp;
1575 u_quad_t frev, tempsize;
1576 u_char cverf[NFSX_V3CREATEVERF];
1577
1578 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
1579#ifndef nolint
1580 rdev = 0;
1581#endif
fad57d0e
MD
1582 nlookup_zero(&nd);
1583 dirp = NULL;
1584 dvp = NULL;
1585 vp = NULL;
984263bc
MD
1586
1587 fhp = &nfh.fh_generic;
1588 nfsm_srvmtofh(fhp);
1589 nfsm_srvnamesiz(len);
1590
984263bc
MD
1591 /*
1592 * Call namei and do initial cleanup to get a few things
1593 * out of the way. If we get an initial error we cleanup
1594 * and return here to avoid special-casing the invalid nd
1595 * structure through the rest of the case. dirp may be
1596 * set even if an error occurs, but the nd structure will not
1597 * be valid at all if an error occurs so we have to invalidate it
1598 * prior to calling nfsm_reply ( which might goto nfsmout ).
1599 */
fad57d0e
MD
1600 error = nfs_namei(&nd, cred, NAMEI_CREATE, &dvp, &vp,
1601 fhp, len, slp, nam, &md, &dpos, &dirp,
1602 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc
MD
1603 if (dirp) {
1604 if (v3) {
3b568787 1605 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
1606 } else {
1607 vrele(dirp);
1608 dirp = NULL;
1609 }
1610 }
1611 if (error) {
1612 nfsm_reply(NFSX_WCCDATA(v3));
1613 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1614 error = 0;
1615 goto nfsmout;
1616 }
1617
1618 /*
1619 * No error. Continue. State:
1620 *
984263bc 1621 * dirp may be valid
fad57d0e
MD
1622 * vp may be valid or NULL if the target does not
1623 * exist.
1624 * dvp is valid
984263bc
MD
1625 *
1626 * The error state is set through the code and we may also do some
1627 * opportunistic releasing of vnodes to avoid holding locks through
1628 * NFS I/O. The cleanup at the end is a catch-all
1629 */
1630
1631 VATTR_NULL(vap);
1632 if (v3) {
1633 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
1634 how = fxdr_unsigned(int, *tl);
1635 switch (how) {
1636 case NFSV3CREATE_GUARDED:
fad57d0e 1637 if (vp) {
984263bc
MD
1638 error = EEXIST;
1639 break;
1640 }
1641 /* fall through */
1642 case NFSV3CREATE_UNCHECKED:
1643 nfsm_srvsattr(vap);
1644 break;
1645 case NFSV3CREATE_EXCLUSIVE:
1646 nfsm_dissect(cp, caddr_t, NFSX_V3CREATEVERF);
1647 bcopy(cp, cverf, NFSX_V3CREATEVERF);
1648 exclusive_flag = 1;
1649 break;
1650 };
1651 vap->va_type = VREG;
1652 } else {
1653 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
1654 vap->va_type = IFTOVT(fxdr_unsigned(u_int32_t, sp->sa_mode));
1655 if (vap->va_type == VNON)
1656 vap->va_type = VREG;
1657 vap->va_mode = nfstov_mode(sp->sa_mode);
1658 switch (vap->va_type) {
1659 case VREG:
1660 tsize = fxdr_unsigned(int32_t, sp->sa_size);
1661 if (tsize != -1)
1662 vap->va_size = (u_quad_t)tsize;
1663 break;
1664 case VCHR:
1665 case VBLK:
1666 case VFIFO:
1667 rdev = fxdr_unsigned(long, sp->sa_size);
1668 break;
1669 default:
1670 break;
1671 };
1672 }
1673
1674 /*
1675 * Iff doesn't exist, create it
1676 * otherwise just truncate to 0 length
1677 * should I set the mode too ?
1678 *
1679 * The only possible error we can have at this point is EEXIST.
1680 * nd.ni_vp will also be non-NULL in that case.
1681 */
fad57d0e 1682 if (vp == NULL) {
984263bc
MD
1683 if (vap->va_mode == (mode_t)VNOVAL)
1684 vap->va_mode = 0;
1685 if (vap->va_type == VREG || vap->va_type == VSOCK) {
fad57d0e
MD
1686 nqsrv_getl(dvp, ND_WRITE);
1687 error = VOP_NCREATE(nd.nl_ncp, &vp, nd.nl_cred, vap);
1688 if (error == 0) {
1689 nfsrv_object_create(vp);
984263bc
MD
1690 if (exclusive_flag) {
1691 exclusive_flag = 0;
1692 VATTR_NULL(vap);
1693 bcopy(cverf, (caddr_t)&vap->va_atime,
1694 NFSX_V3CREATEVERF);
fad57d0e 1695 error = VOP_SETATTR(vp, vap, cred, td);
984263bc
MD
1696 }
1697 }
1698 } else if (
1699 vap->va_type == VCHR ||
1700 vap->va_type == VBLK ||
1701 vap->va_type == VFIFO
1702 ) {
1703 /*
1704 * Handle SysV FIFO node special cases. All other
1705 * devices require super user to access.
1706 */
1707 if (vap->va_type == VCHR && rdev == 0xffffffff)
1708 vap->va_type = VFIFO;
1709 if (vap->va_type != VFIFO &&
dadab5e9 1710 (error = suser_cred(cred, 0))) {
984263bc
MD
1711 goto nfsmreply0;
1712 }
1713 vap->va_rdev = rdev;
fad57d0e 1714 nqsrv_getl(dvp, ND_WRITE);
984263bc 1715
fad57d0e
MD
1716 error = VOP_NMKNOD(nd.nl_ncp, &vp, nd.nl_cred, vap);
1717 if (error)
984263bc 1718 goto nfsmreply0;
fad57d0e
MD
1719#if 0
1720 /*
1721 * XXX what is this junk supposed to do ?
1722 */
1723
1724 vput(vp);
1725 vp = NULL;
984263bc
MD
1726
1727 /*
1728 * release dvp prior to lookup
1729 */
fad57d0e
MD
1730 vput(dvp);
1731 dvp = NULL;
984263bc
MD
1732
1733 /*
1734 * Setup for lookup.
1735 *
1736 * Even though LOCKPARENT was cleared, ni_dvp may
1737 * be garbage.
1738 */
2b69e610
MD
1739 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
1740 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT);
dadab5e9 1741 nd.ni_cnd.cn_td = td;
984263bc
MD
1742 nd.ni_cnd.cn_cred = cred;
1743
1744 error = lookup(&nd);
1745 nd.ni_dvp = NULL;
1746
1747 if (error != 0) {
1748 nfsm_reply(0);
1749 /* fall through on certain errors */
1750 }
1751 nfsrv_object_create(nd.ni_vp);
2b69e610 1752 if (nd.ni_cnd.cn_flags & CNP_ISSYMLINK) {
984263bc
MD
1753 error = EINVAL;
1754 goto nfsmreply0;
1755 }
fad57d0e 1756#endif
984263bc
MD
1757 } else {
1758 error = ENXIO;
1759 }
1760 } else {
1761 if (vap->va_size != -1) {
fad57d0e
MD
1762 error = nfsrv_access(vp, VWRITE, cred,
1763 (nd.nl_flags & NLC_NFS_RDONLY), td, 0);
984263bc 1764 if (!error) {
fad57d0e 1765 nqsrv_getl(vp, ND_WRITE);
984263bc
MD
1766 tempsize = vap->va_size;
1767 VATTR_NULL(vap);
1768 vap->va_size = tempsize;
fad57d0e 1769 error = VOP_SETATTR(vp, vap, cred, td);
984263bc
MD
1770 }
1771 }
1772 }
1773
1774 if (!error) {
1775 bzero((caddr_t)fhp, sizeof(nfh));
fad57d0e
MD
1776 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1777 error = VFS_VPTOFH(vp, &fhp->fh_fid);
984263bc 1778 if (!error)
fad57d0e 1779 error = VOP_GETATTR(vp, vap, td);
984263bc
MD
1780 }
1781 if (v3) {
1782 if (exclusive_flag && !error &&
1783 bcmp(cverf, (caddr_t)&vap->va_atime, NFSX_V3CREATEVERF))
1784 error = EEXIST;
3b568787 1785 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
1786 vrele(dirp);
1787 dirp = NULL;
1788 }
1789 nfsm_reply(NFSX_SRVFH(v3) + NFSX_FATTR(v3) + NFSX_WCCDATA(v3));
1790 if (v3) {
1791 if (!error) {
1792 nfsm_srvpostop_fh(fhp);
1793 nfsm_srvpostop_attr(0, vap);
1794 }
1795 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1796 error = 0;
1797 } else {
1798 nfsm_srvfhtom(fhp, v3);
1799 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1800 nfsm_srvfillattr(vap, fp);
1801 }
1802 goto nfsmout;
1803
1804nfsmreply0:
1805 nfsm_reply(0);
1806 error = 0;
1807 /* fall through */
1808
1809nfsmout:
984263bc
MD
1810 if (dirp)
1811 vrele(dirp);
fad57d0e
MD
1812 nlookup_done(&nd);
1813 if (dvp) {
1814 if (dvp == vp)
1815 vrele(dvp);
984263bc 1816 else
fad57d0e 1817 vput(dvp);
984263bc 1818 }
fad57d0e
MD
1819 if (vp)
1820 vput(vp);
984263bc
MD
1821 return (error);
1822}
1823
1824/*
1825 * nfs v3 mknod service
1826 */
1827int
e851b29e
CP
1828nfsrv_mknod(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1829 struct thread *td, struct mbuf **mrq)
984263bc
MD
1830{
1831 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1832 struct sockaddr *nam = nfsd->nd_nam;
1833 caddr_t dpos = nfsd->nd_dpos;
1834 struct ucred *cred = &nfsd->nd_cr;
1835 struct vattr va, dirfor, diraft;
dadab5e9
MD
1836 struct vattr *vap = &va;
1837 u_int32_t *tl;
fad57d0e 1838 struct nlookupdata nd;
dadab5e9 1839 int32_t t1;
984263bc
MD
1840 caddr_t bpos;
1841 int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
1842 u_int32_t major, minor;
1843 enum vtype vtyp;
1844 char *cp2;
1845 struct mbuf *mb, *mb2, *mreq;
fad57d0e
MD
1846 struct vnode *dirp;
1847 struct vnode *dvp;
1848 struct vnode *vp;
984263bc
MD
1849 nfsfh_t nfh;
1850 fhandle_t *fhp;
1851 u_quad_t frev;
1852
1853 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
1854 nlookup_zero(&nd);
1855 dirp = NULL;
1856 dvp = NULL;
1857 vp = NULL;
984263bc
MD
1858
1859 fhp = &nfh.fh_generic;
1860 nfsm_srvmtofh(fhp);
1861 nfsm_srvnamesiz(len);
1862
984263bc
MD
1863 /*
1864 * Handle nfs_namei() call. If an error occurs, the nd structure
1865 * is not valid. However, nfsm_*() routines may still jump to
1866 * nfsmout.
1867 */
1868
fad57d0e
MD
1869 error = nfs_namei(&nd, cred, NAMEI_CREATE, &dvp, &vp,
1870 fhp, len, slp, nam, &md, &dpos, &dirp,
1871 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 1872 if (dirp)
3b568787 1873 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
1874 if (error) {
1875 nfsm_reply(NFSX_WCCDATA(1));
1876 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1877 error = 0;
1878 goto nfsmout;
1879 }
1880 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
1881 vtyp = nfsv3tov_type(*tl);
1882 if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) {
1883 error = NFSERR_BADTYPE;
1884 goto out;
1885 }
1886 VATTR_NULL(vap);
1887 nfsm_srvsattr(vap);
1888 if (vtyp == VCHR || vtyp == VBLK) {
1889 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1890 major = fxdr_unsigned(u_int32_t, *tl++);
1891 minor = fxdr_unsigned(u_int32_t, *tl);
1892 vap->va_rdev = makeudev(major, minor);
1893 }
1894
1895 /*
1896 * Iff doesn't exist, create it.
1897 */
fad57d0e 1898 if (vp) {
984263bc
MD
1899 error = EEXIST;
1900 goto out;
1901 }
1902 vap->va_type = vtyp;
1903 if (vap->va_mode == (mode_t)VNOVAL)
1904 vap->va_mode = 0;
1905 if (vtyp == VSOCK) {
fad57d0e
MD
1906 nqsrv_getl(dvp, ND_WRITE);
1907 error = VOP_NCREATE(nd.nl_ncp, &vp, nd.nl_cred, vap);
984263bc 1908 } else {
dadab5e9 1909 if (vtyp != VFIFO && (error = suser_cred(cred, 0)))
984263bc 1910 goto out;
fad57d0e 1911 nqsrv_getl(dvp, ND_WRITE);
984263bc 1912
fad57d0e
MD
1913 error = VOP_NMKNOD(nd.nl_ncp, &vp, nd.nl_cred, vap);
1914 if (error)
984263bc 1915 goto out;
fad57d0e
MD
1916
1917#if 0
1918 vput(vp);
1919 vp = NULL;
984263bc
MD
1920
1921 /*
1922 * Release dvp prior to lookup
1923 */
fad57d0e
MD
1924 vput(dvp);
1925 dvp = NULL;
984263bc 1926
fad57d0e
MD
1927 /*
1928 * XXX what is this stuff for?
1929 */
dadab5e9 1930 KKASSERT(td->td_proc);
2b69e610
MD
1931 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
1932 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT);
dadab5e9
MD
1933 nd.ni_cnd.cn_td = td;
1934 nd.ni_cnd.cn_cred = td->td_proc->p_ucred;
984263bc
MD
1935
1936 error = lookup(&nd);
1937 nd.ni_dvp = NULL;
1938
1939 if (error)
1940 goto out;
2b69e610 1941 if (nd.ni_cnd.cn_flags & CNP_ISSYMLINK)
984263bc 1942 error = EINVAL;
fad57d0e 1943#endif
984263bc
MD
1944 }
1945
1946 /*
1947 * send response, cleanup, return.
1948 */
1949out:
fad57d0e
MD
1950 nlookup_done(&nd);
1951 if (dvp) {
1952 if (dvp == vp)
1953 vrele(dvp);
984263bc 1954 else
fad57d0e
MD
1955 vput(dvp);
1956 dvp = NULL;
984263bc 1957 }
984263bc
MD
1958 if (!error) {
1959 bzero((caddr_t)fhp, sizeof(nfh));
1960 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1961 error = VFS_VPTOFH(vp, &fhp->fh_fid);
1962 if (!error)
3b568787 1963 error = VOP_GETATTR(vp, vap, td);
984263bc
MD
1964 }
1965 if (vp) {
1966 vput(vp);
1967 vp = NULL;
984263bc 1968 }
3b568787 1969 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
1970 if (dirp) {
1971 vrele(dirp);
1972 dirp = NULL;
1973 }
1974 nfsm_reply(NFSX_SRVFH(1) + NFSX_POSTOPATTR(1) + NFSX_WCCDATA(1));
1975 if (!error) {
1976 nfsm_srvpostop_fh(fhp);
1977 nfsm_srvpostop_attr(0, vap);
1978 }
1979 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1980 return (0);
1981nfsmout:
1982 if (dirp)
1983 vrele(dirp);
fad57d0e
MD
1984 nlookup_done(&nd);
1985 if (dvp) {
1986 if (dvp == vp)
1987 vrele(dvp);
984263bc 1988 else
fad57d0e 1989 vput(dvp);
984263bc 1990 }
fad57d0e
MD
1991 if (vp)
1992 vput(vp);
984263bc
MD
1993 return (error);
1994}
1995
1996/*
1997 * nfs remove service
1998 */
1999int
e851b29e
CP
2000nfsrv_remove(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2001 struct thread *td, struct mbuf **mrq)
984263bc
MD
2002{
2003 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2004 struct sockaddr *nam = nfsd->nd_nam;
2005 caddr_t dpos = nfsd->nd_dpos;
2006 struct ucred *cred = &nfsd->nd_cr;
fad57d0e 2007 struct nlookupdata nd;
dadab5e9
MD
2008 u_int32_t *tl;
2009 int32_t t1;
984263bc
MD
2010 caddr_t bpos;
2011 int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
2012 int v3 = (nfsd->nd_flag & ND_NFSV3);
2013 char *cp2;
2014 struct mbuf *mb, *mreq;
2015 struct vnode *dirp;
fad57d0e
MD
2016 struct vnode *dvp;
2017 struct vnode *vp;
984263bc
MD
2018 struct vattr dirfor, diraft;
2019 nfsfh_t nfh;
2020 fhandle_t *fhp;
2021 u_quad_t frev;
2022
2023 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2024 nlookup_zero(&nd);
2025 dirp = NULL;
2026 dvp = NULL;
2027 vp = NULL;
984263bc
MD
2028
2029 fhp = &nfh.fh_generic;
2030 nfsm_srvmtofh(fhp);
2031 nfsm_srvnamesiz(len);
2032
fad57d0e
MD
2033 error = nfs_namei(&nd, cred, NAMEI_DELETE, &dvp, &vp,
2034 fhp, len, slp, nam, &md, &dpos, &dirp,
2035 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2036 if (dirp) {
fad57d0e 2037 if (v3)
3b568787 2038 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2039 }
2040 if (error == 0) {
fad57d0e 2041 if (vp->v_type == VDIR) {
984263bc
MD
2042 error = EPERM; /* POSIX */
2043 goto out;
2044 }
2045 /*
2046 * The root of a mounted filesystem cannot be deleted.
2047 */
fad57d0e 2048 if (vp->v_flag & VROOT) {
984263bc
MD
2049 error = EBUSY;
2050 goto out;
2051 }
2052out:
2053 if (!error) {
fad57d0e
MD
2054 nqsrv_getl(dvp, ND_WRITE);
2055 nqsrv_getl(vp, ND_WRITE);
2056 error = VOP_NREMOVE(nd.nl_ncp, nd.nl_cred);
984263bc
MD
2057 }
2058 }
fad57d0e 2059 if (dirp && v3)
3b568787 2060 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2061 nfsm_reply(NFSX_WCCDATA(v3));
2062 if (v3) {
2063 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2064 error = 0;
2065 }
2066nfsmout:
fad57d0e
MD
2067 nlookup_done(&nd);
2068 if (dirp)
2069 vrele(dirp);
2070 if (dvp) {
2071 if (dvp == vp)
2072 vrele(dvp);
984263bc 2073 else
fad57d0e 2074 vput(dvp);
984263bc 2075 }
fad57d0e
MD
2076 if (vp)
2077 vput(vp);
984263bc
MD
2078 return(error);
2079}
2080
2081/*
2082 * nfs rename service
2083 */
2084int
e851b29e
CP
2085nfsrv_rename(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2086 struct thread *td, struct mbuf **mrq)
984263bc
MD
2087{
2088 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2089 struct sockaddr *nam = nfsd->nd_nam;
2090 caddr_t dpos = nfsd->nd_dpos;
2091 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2092 u_int32_t *tl;
2093 int32_t t1;
984263bc 2094 caddr_t bpos;
5df949e9 2095 int error = 0, cache = 0, len, len2, fdirfor_ret = 1, fdiraft_ret = 1;
984263bc
MD
2096 int tdirfor_ret = 1, tdiraft_ret = 1;
2097 int v3 = (nfsd->nd_flag & ND_NFSV3);
2098 char *cp2;
2099 struct mbuf *mb, *mreq;
fad57d0e
MD
2100 struct nlookupdata fromnd, tond;
2101 struct vnode *fvp, *fdirp;
2102 struct vnode *tvp, *tdirp;
2103 struct namecache *ncp;
984263bc
MD
2104 struct vattr fdirfor, fdiraft, tdirfor, tdiraft;
2105 nfsfh_t fnfh, tnfh;
2106 fhandle_t *ffhp, *tfhp;
2107 u_quad_t frev;
2108 uid_t saved_uid;
2109
2110 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2111#ifndef nolint
2112 fvp = (struct vnode *)0;
2113#endif
2114 ffhp = &fnfh.fh_generic;
2115 tfhp = &tnfh.fh_generic;
2116
2117 /*
2118 * Clear fields incase goto nfsmout occurs from macro.
2119 */
2120
fad57d0e
MD
2121 nlookup_zero(&fromnd);
2122 nlookup_zero(&tond);
2123 fdirp = NULL;
2124 tdirp = NULL;
984263bc
MD
2125
2126 nfsm_srvmtofh(ffhp);
2127 nfsm_srvnamesiz(len);
2128 /*
2129 * Remember our original uid so that we can reset cr_uid before
2130 * the second nfs_namei() call, in case it is remapped.
2131 */
2132 saved_uid = cred->cr_uid;
fad57d0e
MD
2133 error = nfs_namei(&fromnd, cred, NAMEI_DELETE, NULL, NULL,
2134 ffhp, len, slp, nam, &md, &dpos, &fdirp,
2135 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2136 if (fdirp) {
fad57d0e 2137 if (v3)
3b568787 2138 fdirfor_ret = VOP_GETATTR(fdirp, &fdirfor, td);
984263bc
MD
2139 }
2140 if (error) {
2141 nfsm_reply(2 * NFSX_WCCDATA(v3));
2142 nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
2143 nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
2144 error = 0;
2145 goto nfsmout;
2146 }
fad57d0e
MD
2147
2148 /*
2149 * We have to unlock the from ncp before we can safely lookup
2150 * the target ncp.
2151 */
2152 KKASSERT(fromnd.nl_flags & NLC_NCPISLOCKED);
2153 cache_unlock(fromnd.nl_ncp);
2154 fromnd.nl_flags &= ~NLC_NCPISLOCKED;
984263bc
MD
2155 nfsm_srvmtofh(tfhp);
2156 nfsm_strsiz(len2, NFS_MAXNAMLEN);
2157 cred->cr_uid = saved_uid;
fad57d0e
MD
2158
2159 error = nfs_namei(&tond, cred, NAMEI_RENAME, NULL, NULL,
2160 tfhp, len2, slp, nam, &md, &dpos, &tdirp,
2161 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2162 if (tdirp) {
fad57d0e 2163 if (v3)
3b568787 2164 tdirfor_ret = VOP_GETATTR(tdirp, &tdirfor, td);
984263bc
MD
2165 }
2166 if (error)
2167 goto out1;
2168
fad57d0e
MD
2169 /*
2170 * relock the source
2171 */
2172 if (cache_lock_nonblock(fromnd.nl_ncp) == 0) {
2173 cache_resolve(fromnd.nl_ncp, fromnd.nl_cred);
2174 } else if (fromnd.nl_ncp > tond.nl_ncp) {
2175 cache_lock(fromnd.nl_ncp);
2176 cache_resolve(fromnd.nl_ncp, fromnd.nl_cred);
2177 } else {
2178 cache_unlock(tond.nl_ncp);
2179 cache_lock(fromnd.nl_ncp);
2180 cache_resolve(fromnd.nl_ncp, fromnd.nl_cred);
2181 cache_lock(tond.nl_ncp);
2182 cache_resolve(tond.nl_ncp, tond.nl_cred);
2183 }
2184 fromnd.nl_flags |= NLC_NCPISLOCKED;
2185
2186 tvp = tond.nl_ncp->nc_vp;
2187 fvp = fromnd.nl_ncp->nc_vp;
2188
984263bc
MD
2189 if (tvp != NULL) {
2190 if (fvp->v_type == VDIR && tvp->v_type != VDIR) {
2191 if (v3)
2192 error = EEXIST;
2193 else
2194 error = EISDIR;
2195 goto out;
2196 } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) {
2197 if (v3)
2198 error = EEXIST;
2199 else
2200 error = ENOTDIR;
2201 goto out;
2202 }
2203 if (tvp->v_type == VDIR && tvp->v_mountedhere) {
2204 if (v3)
2205 error = EXDEV;
2206 else
2207 error = ENOTEMPTY;
2208 goto out;
2209 }
2210 }
2211 if (fvp->v_type == VDIR && fvp->v_mountedhere) {
2212 if (v3)
2213 error = EXDEV;
2214 else
2215 error = ENOTEMPTY;
2216 goto out;
2217 }
fad57d0e 2218 if (fromnd.nl_ncp->nc_mount != tond.nl_ncp->nc_mount) {
984263bc
MD
2219 if (v3)
2220 error = EXDEV;
2221 else
2222 error = ENOTEMPTY;
2223 goto out;
2224 }
fad57d0e 2225 if (fromnd.nl_ncp == tond.nl_ncp->nc_parent) {
984263bc
MD
2226 if (v3)
2227 error = EINVAL;
2228 else
2229 error = ENOTEMPTY;
2230 }
fad57d0e
MD
2231
2232 /*
2233 * You cannot rename a source into itself or a subdirectory of itself.
2234 * We check this by travsering the target directory upwards looking
2235 * for a match against the source.
2236 */
2237 if (error == 0) {
2238 for (ncp = tond.nl_ncp; ncp; ncp = ncp->nc_parent) {
2239 if (fromnd.nl_ncp == ncp) {
2240 error = EINVAL;
2241 break;
2242 }
2243 }
2244 }
2245
984263bc
MD
2246 /*
2247 * If source is the same as the destination (that is the
2248 * same vnode with the same name in the same directory),
2249 * then there is nothing to do.
2250 */
fad57d0e 2251 if (fromnd.nl_ncp == tond.nl_ncp)
984263bc
MD
2252 error = -1;
2253out:
2254 if (!error) {
2255 /*
fad57d0e 2256 * The VOP_NRENAME function releases all vnode references &
984263bc
MD
2257 * locks prior to returning so we need to clear the pointers
2258 * to bypass cleanup code later on.
2259 */
fad57d0e
MD
2260#if 0
2261 /* XXX should be handled by NRENAME */
2262 nqsrv_getl(fdvp, ND_WRITE);
984263bc
MD
2263 nqsrv_getl(tdvp, ND_WRITE);
2264 if (tvp) {
2265 nqsrv_getl(tvp, ND_WRITE);
2266 }
fad57d0e
MD
2267#endif
2268 error = VOP_NRENAME(fromnd.nl_ncp, tond.nl_ncp, tond.nl_cred);
984263bc
MD
2269 } else {
2270 if (error == -1)
2271 error = 0;
2272 }
2273 /* fall through */
2274
2275out1:
2276 if (fdirp)
3b568787 2277 fdiraft_ret = VOP_GETATTR(fdirp, &fdiraft, td);
984263bc 2278 if (tdirp)
3b568787 2279 tdiraft_ret = VOP_GETATTR(tdirp, &tdiraft, td);
984263bc
MD
2280 nfsm_reply(2 * NFSX_WCCDATA(v3));
2281 if (v3) {
2282 nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
2283 nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
2284 }
2285 error = 0;
2286 /* fall through */
2287
2288nfsmout:
984263bc
MD
2289 if (tdirp)
2290 vrele(tdirp);
fad57d0e 2291 nlookup_done(&tond);
984263bc
MD
2292 if (fdirp)
2293 vrele(fdirp);
fad57d0e 2294 nlookup_done(&fromnd);
984263bc
MD
2295 return (error);
2296}
2297
2298/*
2299 * nfs link service
2300 */
2301int
e851b29e
CP
2302nfsrv_link(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2303 struct thread *td, struct mbuf **mrq)
984263bc
MD
2304{
2305 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2306 struct sockaddr *nam = nfsd->nd_nam;
2307 caddr_t dpos = nfsd->nd_dpos;
2308 struct ucred *cred = &nfsd->nd_cr;
fad57d0e 2309 struct nlookupdata nd;
dadab5e9
MD
2310 u_int32_t *tl;
2311 int32_t t1;
984263bc 2312 caddr_t bpos;
5df949e9 2313 int error = 0, rdonly, cache = 0, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2314 int getret = 1, v3 = (nfsd->nd_flag & ND_NFSV3);
2315 char *cp2;
2316 struct mbuf *mb, *mreq;
fad57d0e
MD
2317 struct vnode *dirp;
2318 struct vnode *dvp;
2319 struct vnode *vp;
2320 struct vnode *xp;
984263bc
MD
2321 struct vattr dirfor, diraft, at;
2322 nfsfh_t nfh, dnfh;
2323 fhandle_t *fhp, *dfhp;
2324 u_quad_t frev;
2325
2326 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2327 nlookup_zero(&nd);
2328 dirp = dvp = vp = xp = NULL;
984263bc
MD
2329
2330 fhp = &nfh.fh_generic;
2331 dfhp = &dnfh.fh_generic;
2332 nfsm_srvmtofh(fhp);
2333 nfsm_srvmtofh(dfhp);
2334 nfsm_srvnamesiz(len);
2335
fad57d0e 2336 error = nfsrv_fhtovp(fhp, FALSE, &xp, cred, slp, nam,
984263bc
MD
2337 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
2338 if (error) {
2339 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2340 nfsm_srvpostop_attr(getret, &at);
2341 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
fad57d0e 2342 xp = NULL;
984263bc
MD
2343 error = 0;
2344 goto nfsmout;
2345 }
fad57d0e 2346 if (xp->v_type == VDIR) {
984263bc
MD
2347 error = EPERM; /* POSIX */
2348 goto out1;
2349 }
fad57d0e
MD
2350
2351 error = nfs_namei(&nd, cred, NAMEI_CREATE, &dvp, &vp,
2352 dfhp, len, slp, nam, &md, &dpos, &dirp,
2353 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2354 if (dirp) {
fad57d0e 2355 if (v3)
3b568787 2356 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2357 }
2358 if (error)
2359 goto out1;
2360
fad57d0e 2361 if (vp != NULL) {
984263bc
MD
2362 error = EEXIST;
2363 goto out;
2364 }
fad57d0e 2365 if (xp->v_mount != dvp->v_mount)
984263bc
MD
2366 error = EXDEV;
2367out:
2368 if (!error) {
fad57d0e 2369#if 0
984263bc 2370 nqsrv_getl(xp, ND_WRITE);
fad57d0e
MD
2371 nqsrv_getl(vp, ND_WRITE);
2372#endif
2373 error = VOP_NLINK(nd.nl_ncp, xp, nd.nl_cred);
984263bc
MD
2374 }
2375 /* fall through */
2376
2377out1:
2378 if (v3)
fad57d0e 2379 getret = VOP_GETATTR(xp, &at, td);
984263bc 2380 if (dirp)
3b568787 2381 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2382 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2383 if (v3) {
2384 nfsm_srvpostop_attr(getret, &at);
2385 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2386 error = 0;
2387 }
2388 /* fall through */
2389
2390nfsmout:
fad57d0e 2391 nlookup_done(&nd);
984263bc
MD
2392 if (dirp)
2393 vrele(dirp);
fad57d0e
MD
2394 if (xp)
2395 vrele(xp);
2396 if (dvp) {
2397 if (dvp == vp)
2398 vrele(dvp);
984263bc 2399 else
fad57d0e 2400 vput(dvp);
984263bc 2401 }
fad57d0e
MD
2402 if (vp)
2403 vput(vp);
984263bc
MD
2404 return(error);
2405}
2406
2407/*
2408 * nfs symbolic link service
2409 */
2410int
e851b29e
CP
2411nfsrv_symlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2412 struct thread *td, struct mbuf **mrq)
984263bc
MD
2413{
2414 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2415 struct sockaddr *nam = nfsd->nd_nam;
2416 caddr_t dpos = nfsd->nd_dpos;
2417 struct ucred *cred = &nfsd->nd_cr;
2418 struct vattr va, dirfor, diraft;
fad57d0e 2419 struct nlookupdata nd;
dadab5e9
MD
2420 struct vattr *vap = &va;
2421 u_int32_t *tl;
2422 int32_t t1;
984263bc
MD
2423 struct nfsv2_sattr *sp;
2424 char *bpos, *pathcp = (char *)0, *cp2;
2425 struct uio io;
2426 struct iovec iv;
5df949e9 2427 int error = 0, cache = 0, len, len2, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2428 int v3 = (nfsd->nd_flag & ND_NFSV3);
2429 struct mbuf *mb, *mreq, *mb2;
fad57d0e
MD
2430 struct vnode *dirp;
2431 struct vnode *vp;
984263bc
MD
2432 nfsfh_t nfh;
2433 fhandle_t *fhp;
2434 u_quad_t frev;
2435
2436 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2437 nlookup_zero(&nd);
2438 dirp = vp = NULL;
984263bc
MD
2439
2440 fhp = &nfh.fh_generic;
2441 nfsm_srvmtofh(fhp);
2442 nfsm_srvnamesiz(len);
fad57d0e
MD
2443
2444 error = nfs_namei(&nd, cred, NAMEI_CREATE, NULL, &vp,
2445 fhp, len, slp, nam, &md, &dpos, &dirp,
2446 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2447 if (dirp) {
fad57d0e 2448 if (v3)
3b568787 2449 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2450 }
2451 if (error)
2452 goto out;
2453
2454 VATTR_NULL(vap);
2455 if (v3)
2456 nfsm_srvsattr(vap);
2457 nfsm_strsiz(len2, NFS_MAXPATHLEN);
2458 MALLOC(pathcp, caddr_t, len2 + 1, M_TEMP, M_WAITOK);
2459 iv.iov_base = pathcp;
2460 iv.iov_len = len2;
2461 io.uio_resid = len2;
2462 io.uio_offset = 0;
2463 io.uio_iov = &iv;
2464 io.uio_iovcnt = 1;
2465 io.uio_segflg = UIO_SYSSPACE;
2466 io.uio_rw = UIO_READ;
dadab5e9 2467 io.uio_td = NULL;
984263bc
MD
2468 nfsm_mtouio(&io, len2);
2469 if (!v3) {
2470 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
2471 vap->va_mode = nfstov_mode(sp->sa_mode);
2472 }
2473 *(pathcp + len2) = '\0';
fad57d0e 2474 if (vp) {
984263bc
MD
2475 error = EEXIST;
2476 goto out;
2477 }
2478
984263bc
MD
2479 if (vap->va_mode == (mode_t)VNOVAL)
2480 vap->va_mode = 0;
fad57d0e
MD
2481#if 0
2482 nqsrv_getl(dvp, ND_WRITE);
2483#endif
2484 error = VOP_NSYMLINK(nd.nl_ncp, &vp, nd.nl_cred, vap, pathcp);
2485 if (error == 0) {
2486 bzero((caddr_t)fhp, sizeof(nfh));
2487 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
2488 error = VFS_VPTOFH(vp, &fhp->fh_fid);
2489 if (!error)
2490 error = VOP_GETATTR(vp, vap, td);
2491 }
2492
2493#if 0
984263bc 2494 /*
fad57d0e
MD
2495 * We have a vp in hand from the new API call, we do not have to
2496 * look it up again.
984263bc 2497 */
984263bc
MD
2498 if (error == 0) {
2499 if (v3) {
2500 /*
2501 * Issue lookup. Leave SAVESTART set so we can easily free
2502 * the name buffer later on.
2503 *
2504 * since LOCKPARENT is not set, ni_dvp will be garbage on
2505 * return whether an error occurs or not.
2506 */
2b69e610
MD
2507 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
2508 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT | CNP_FOLLOW);
dadab5e9 2509 nd.ni_cnd.cn_td = td;
984263bc
MD
2510 nd.ni_cnd.cn_cred = cred;
2511
2512 error = lookup(&nd);
2513 nd.ni_dvp = NULL;
2514
2515 if (error == 0) {
2516 bzero((caddr_t)fhp, sizeof(nfh));
2517 fhp->fh_fsid = nd.ni_vp->v_mount->mnt_stat.f_fsid;
2518 error = VFS_VPTOFH(nd.ni_vp, &fhp->fh_fid);
2519 if (!error)
3b568787 2520 error = VOP_GETATTR(nd.ni_vp, vap, td);
984263bc
MD
2521 vput(nd.ni_vp);
2522 nd.ni_vp = NULL;
2523 }
2524 }
2525 }
fad57d0e 2526#endif
984263bc 2527out:
fad57d0e
MD
2528 if (vp) {
2529 vput(vp);
2530 vp = NULL;
2531 }
984263bc
MD
2532 if (pathcp) {
2533 FREE(pathcp, M_TEMP);
2534 pathcp = NULL;
2535 }
2536 if (dirp) {
3b568787 2537 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2538 vrele(dirp);
2539 dirp = NULL;
2540 }
984263bc
MD
2541 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2542 if (v3) {
2543 if (!error) {
2544 nfsm_srvpostop_fh(fhp);
2545 nfsm_srvpostop_attr(0, vap);
2546 }
2547 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2548 }
2549 error = 0;
2550 /* fall through */
2551
2552nfsmout:
fad57d0e
MD
2553 nlookup_done(&nd);
2554 if (vp)
2555 vput(vp);
984263bc
MD
2556 if (dirp)
2557 vrele(dirp);
2558 if (pathcp)
2559 FREE(pathcp, M_TEMP);
984263bc
MD
2560 return (error);
2561}
2562
2563/*
2564 * nfs mkdir service
2565 */
2566int
e851b29e
CP
2567nfsrv_mkdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2568 struct thread *td, struct mbuf **mrq)
984263bc
MD
2569{
2570 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2571 struct sockaddr *nam = nfsd->nd_nam;
2572 caddr_t dpos = nfsd->nd_dpos;
2573 struct ucred *cred = &nfsd->nd_cr;
2574 struct vattr va, dirfor, diraft;
dadab5e9
MD
2575 struct vattr *vap = &va;
2576 struct nfs_fattr *fp;
fad57d0e 2577 struct nlookupdata nd;
dadab5e9
MD
2578 caddr_t cp;
2579 u_int32_t *tl;
2580 int32_t t1;
984263bc 2581 caddr_t bpos;
5df949e9 2582 int error = 0, cache = 0, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2583 int v3 = (nfsd->nd_flag & ND_NFSV3);
2584 char *cp2;
2585 struct mbuf *mb, *mb2, *mreq;
fad57d0e
MD
2586 struct vnode *dirp;
2587 struct vnode *vp;
984263bc
MD
2588 nfsfh_t nfh;
2589 fhandle_t *fhp;
2590 u_quad_t frev;
2591
2592 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2593 nlookup_zero(&nd);
2594 dirp = NULL;
2595 vp = NULL;
984263bc
MD
2596
2597 fhp = &nfh.fh_generic;
2598 nfsm_srvmtofh(fhp);
2599 nfsm_srvnamesiz(len);
984263bc 2600
fad57d0e
MD
2601 error = nfs_namei(&nd, cred, NAMEI_CREATE, NULL, &vp,
2602 fhp, len, slp, nam, &md, &dpos, &dirp,
2603 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2604 if (dirp) {
fad57d0e 2605 if (v3)
3b568787 2606 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2607 }
2608 if (error) {
2609 nfsm_reply(NFSX_WCCDATA(v3));
2610 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2611 error = 0;
2612 goto nfsmout;
2613 }
2614 VATTR_NULL(vap);
2615 if (v3) {
2616 nfsm_srvsattr(vap);
2617 } else {
2618 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
2619 vap->va_mode = nfstov_mode(*tl++);
2620 }
2621
2622 /*
2623 * At this point nd.ni_dvp is referenced and exclusively locked and
2624 * nd.ni_vp, if it exists, is referenced but not locked.
2625 */
2626
2627 vap->va_type = VDIR;
fad57d0e 2628 if (vp != NULL) {
984263bc
MD
2629 error = EEXIST;
2630 goto out;
2631 }
2632
2633 /*
2634 * Issue mkdir op. Since SAVESTART is not set, the pathname
2635 * component is freed by the VOP call. This will fill-in
2636 * nd.ni_vp, reference, and exclusively lock it.
2637 */
2638 if (vap->va_mode == (mode_t)VNOVAL)
2639 vap->va_mode = 0;
fad57d0e 2640#if 0
984263bc 2641 nqsrv_getl(nd.ni_dvp, ND_WRITE);
fad57d0e
MD
2642#endif
2643 error = VOP_NMKDIR(nd.nl_ncp, &vp, nd.nl_cred, vap);
984263bc 2644
fad57d0e 2645 if (error == 0) {
984263bc 2646 bzero((caddr_t)fhp, sizeof(nfh));
fad57d0e
MD
2647 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
2648 error = VFS_VPTOFH(vp, &fhp->fh_fid);
2649 if (error == 0)
2650 error = VOP_GETATTR(vp, vap, td);
984263bc
MD
2651 }
2652out:
2653 if (dirp)
3b568787 2654 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2655 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2656 if (v3) {
2657 if (!error) {
2658 nfsm_srvpostop_fh(fhp);
2659 nfsm_srvpostop_attr(0, vap);
2660 }
2661 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2662 } else {
2663 nfsm_srvfhtom(fhp, v3);
2664 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
2665 nfsm_srvfillattr(vap, fp);
2666 }
2667 error = 0;
2668 /* fall through */
2669
2670nfsmout:
fad57d0e 2671 nlookup_done(&nd);
984263bc
MD
2672 if (dirp)
2673 vrele(dirp);
fad57d0e
MD
2674 if (vp)
2675 vput(vp);
984263bc
MD
2676 return (error);
2677}
2678
2679/*
2680 * nfs rmdir service
2681 */
2682int
e851b29e
CP
2683nfsrv_rmdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2684 struct thread *td, struct mbuf **mrq)
984263bc
MD
2685{
2686 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2687 struct sockaddr *nam = nfsd->nd_nam;
2688 caddr_t dpos = nfsd->nd_dpos;
2689 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2690 u_int32_t *tl;
2691 int32_t t1;
984263bc 2692 caddr_t bpos;
5df949e9 2693 int error = 0, cache = 0, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2694 int v3 = (nfsd->nd_flag & ND_NFSV3);
2695 char *cp2;
2696 struct mbuf *mb, *mreq;
fad57d0e
MD
2697 struct vnode *dirp;
2698 struct vnode *vp;
984263bc
MD
2699 struct vattr dirfor, diraft;
2700 nfsfh_t nfh;
2701 fhandle_t *fhp;
fad57d0e 2702 struct nlookupdata nd;
984263bc
MD
2703 u_quad_t frev;
2704
2705 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2706 nlookup_zero(&nd);
2707 dirp = NULL;
2708 vp = NULL;
984263bc
MD
2709
2710 fhp = &nfh.fh_generic;
2711 nfsm_srvmtofh(fhp);
2712 nfsm_srvnamesiz(len);
fad57d0e
MD
2713
2714 error = nfs_namei(&nd, cred, NAMEI_DELETE, NULL, &vp,
2715 fhp, len, slp, nam, &md, &dpos, &dirp,
2716 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2717 if (dirp) {
fad57d0e 2718 if (v3)
3b568787 2719 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2720 }
2721 if (error) {
2722 nfsm_reply(NFSX_WCCDATA(v3));
2723 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2724 error = 0;
2725 goto nfsmout;
2726 }
984263bc
MD
2727 if (vp->v_type != VDIR) {
2728 error = ENOTDIR;
2729 goto out;
2730 }
fad57d0e 2731
984263bc
MD
2732 /*
2733 * The root of a mounted filesystem cannot be deleted.
2734 */
2735 if (vp->v_flag & VROOT)
2736 error = EBUSY;
2737out:
2738 /*
2739 * Issue or abort op. Since SAVESTART is not set, path name
2740 * component is freed by the VOP after either.
2741 */
2742 if (!error) {
fad57d0e 2743#if 0
984263bc
MD
2744 nqsrv_getl(nd.ni_dvp, ND_WRITE);
2745 nqsrv_getl(vp, ND_WRITE);
fad57d0e
MD
2746#endif
2747 vput(vp);
2748 vp = NULL;
2749 error = VOP_NRMDIR(nd.nl_ncp, nd.nl_cred);
984263bc 2750 }
fad57d0e 2751 nlookup_done(&nd);
984263bc
MD
2752
2753 if (dirp)
3b568787 2754 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2755 nfsm_reply(NFSX_WCCDATA(v3));
2756 if (v3) {
2757 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2758 error = 0;
2759 }
2760 /* fall through */
2761
2762nfsmout:
fad57d0e 2763 nlookup_done(&nd);
984263bc
MD
2764 if (dirp)
2765 vrele(dirp);
fad57d0e
MD
2766 if (vp)
2767 vput(vp);
984263bc
MD
2768 return(error);
2769}
2770
2771/*
2772 * nfs readdir service
2773 * - mallocs what it thinks is enough to read
2774 * count rounded up to a multiple of NFS_DIRBLKSIZ <= NFS_MAXREADDIR
2775 * - calls VOP_READDIR()
2776 * - loops around building the reply
2777 * if the output generated exceeds count break out of loop
2778 * The nfsm_clget macro is used here so that the reply will be packed
2779 * tightly in mbuf clusters.
2780 * - it only knows that it has encountered eof when the VOP_READDIR()
2781 * reads nothing
2782 * - as such one readdir rpc will return eof false although you are there
2783 * and then the next will return eof
2784 * - it trims out records with d_fileno == 0
2785 * this doesn't matter for Unix clients, but they might confuse clients
2786 * for other os'.
2787 * NB: It is tempting to set eof to true if the VOP_READDIR() reads less
2788 * than requested, but this may not apply to all filesystems. For
2789 * example, client NFS does not { although it is never remote mounted
2790 * anyhow }
2791 * The alternate call nfsrv_readdirplus() does lookups as well.
2792 * PS: The NFS protocol spec. does not clarify what the "count" byte
2793 * argument is a count of.. just name strings and file id's or the
2794 * entire reply rpc or ...
2795 * I tried just file name and id sizes and it confused the Sun client,
2796 * so I am using the full rpc size now. The "paranoia.." comment refers
2797 * to including the status longwords that are not a part of the dir.
2798 * "entry" structures, but are in the rpc.
2799 */
2800struct flrep {
2801 nfsuint64 fl_off;
2802 u_int32_t fl_postopok;
2803 u_int32_t fl_fattr[NFSX_V3FATTR / sizeof (u_int32_t)];
2804 u_int32_t fl_fhok;
2805 u_int32_t fl_fhsize;
2806 u_int32_t fl_nfh[NFSX_V3FH / sizeof (u_int32_t)];
2807};
2808
2809int
e851b29e
CP
2810nfsrv_readdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2811 struct thread *td, struct mbuf **mrq)
984263bc
MD
2812{
2813 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2814 struct sockaddr *nam = nfsd->nd_nam;
2815 caddr_t dpos = nfsd->nd_dpos;
2816 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2817 char *bp, *be;
2818 struct mbuf *mp;
2819 struct dirent *dp;
2820 caddr_t cp;
2821 u_int32_t *tl;
2822 int32_t t1;
984263bc
MD
2823 caddr_t bpos;
2824 struct mbuf *mb, *mb2, *mreq, *mp2;
2825 char *cpos, *cend, *cp2, *rbuf;
2826 struct vnode *vp = NULL;
2827 struct vattr at;
2828 nfsfh_t nfh;
2829 fhandle_t *fhp;
2830 struct uio io;
2831 struct iovec iv;
2832 int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
2833 int siz, cnt, fullsiz, eofflag, rdonly, cache, ncookies;
2834 int v3 = (nfsd->nd_flag & ND_NFSV3);
2835 u_quad_t frev, off, toff, verf;
2836 u_long *cookies = NULL, *cookiep; /* needs to be int64_t or off_t */
2837
2838 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2839 fhp = &nfh.fh_generic;
2840 nfsm_srvmtofh(fhp);
2841 if (v3) {
2842 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2843 toff = fxdr_hyper(tl);
2844 tl += 2;
2845 verf = fxdr_hyper(tl);
2846 tl += 2;
2847 } else {
2848 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2849 toff = fxdr_unsigned(u_quad_t, *tl++);
2850 verf = 0; /* shut up gcc */
2851 }
2852 off = toff;
2853 cnt = fxdr_unsigned(int, *tl);
2854 siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
2855 xfer = NFS_SRVMAXDATA(nfsd);
2856 if (cnt > xfer)
2857 cnt = xfer;
2858 if (siz > xfer)
2859 siz = xfer;
2860 fullsiz = siz;
2861 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
2862 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
2863 if (!error && vp->v_type != VDIR) {
2864 error = ENOTDIR;
2865 vput(vp);
2866 vp = NULL;
2867 }
2868 if (error) {
2869 nfsm_reply(NFSX_UNSIGNED);
2870 nfsm_srvpostop_attr(getret, &at);
2871 error = 0;
2872 goto nfsmout;
2873 }
2874
2875 /*
2876 * Obtain lock on vnode for this section of the code
2877 */
2878
2879 nqsrv_getl(vp, ND_READ);
2880 if (v3) {
3b568787 2881 error = getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
2882#if 0
2883 /*
2884 * XXX This check may be too strict for Solaris 2.5 clients.
2885 */
2886 if (!error && toff && verf && verf != at.va_filerev)
2887 error = NFSERR_BAD_COOKIE;
2888#endif
2889 }
2890 if (!error)
dadab5e9 2891 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 0);
984263bc
MD
2892 if (error) {
2893 vput(vp);
2894 vp = NULL;
2895 nfsm_reply(NFSX_POSTOPATTR(v3));
2896 nfsm_srvpostop_attr(getret, &at);
2897 error = 0;
2898 goto nfsmout;
2899 }
5fd012e0 2900 VOP_UNLOCK(vp, 0, td);
984263bc
MD
2901
2902 /*
2903 * end section. Allocate rbuf and continue
2904 */
2905 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
2906again:
2907 iv.iov_base = rbuf;
2908 iv.iov_len = fullsiz;
2909 io.uio_iov = &iv;
2910 io.uio_iovcnt = 1;
2911 io.uio_offset = (off_t)off;
2912 io.uio_resid = fullsiz;
2913 io.uio_segflg = UIO_SYSSPACE;
2914 io.uio_rw = UIO_READ;
dadab5e9 2915 io.uio_td = NULL;
984263bc 2916 eofflag = 0;
5fd012e0 2917 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
984263bc
MD
2918 if (cookies) {
2919 free((caddr_t)cookies, M_TEMP);
2920 cookies = NULL;
2921 }
2922 error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
2923 off = (off_t)io.uio_offset;
2924 if (!cookies && !error)
2925 error = NFSERR_PERM;
2926 if (v3) {
3b568787 2927 getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
2928 if (!error)
2929 error = getret;
2930 }
5fd012e0 2931 VOP_UNLOCK(vp, 0, td);
984263bc
MD
2932 if (error) {
2933 vrele(vp);
2934 vp = NULL;
2935 free((caddr_t)rbuf, M_TEMP);
2936 if (cookies)
2937 free((caddr_t)cookies, M_TEMP);
2938 nfsm_reply(NFSX_POSTOPATTR(v3));
2939 nfsm_srvpostop_attr(getret, &at);
2940 error = 0;
2941 goto nfsmout;
2942 }
2943 if (io.uio_resid) {
2944 siz -= io.uio_resid;
2945
2946 /*
2947 * If nothing read, return eof
2948 * rpc reply
2949 */
2950 if (siz == 0) {
2951 vrele(vp);
2952 vp = NULL;
2953 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) +
2954 2 * NFSX_UNSIGNED);
2955 if (v3) {
2956 nfsm_srvpostop_attr(getret, &at);
2957 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2958 txdr_hyper(at.va_filerev, tl);
2959 tl += 2;
2960 } else
2961 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2962 *tl++ = nfs_false;
2963 *tl = nfs_true;
2964 FREE((caddr_t)rbuf, M_TEMP);
2965 FREE((caddr_t)cookies, M_TEMP);
2966 error = 0;
2967 goto nfsmout;
2968 }
2969 }
2970
2971 /*
2972 * Check for degenerate cases of nothing useful read.
2973 * If so go try again
2974 */
2975 cpos = rbuf;
2976 cend = rbuf + siz;
2977 dp = (struct dirent *)cpos;
2978 cookiep = cookies;
2979 /*
2980 * For some reason FreeBSD's ufs_readdir() chooses to back the
2981 * directory offset up to a block boundary, so it is necessary to
2982 * skip over the records that preceed the requested offset. This
2983 * requires the assumption that file offset cookies monotonically
2984 * increase.
2985 */
2986 while (cpos < cend && ncookies > 0 &&
2987 (dp->d_fileno == 0 || dp->d_type == DT_WHT ||
2988 ((u_quad_t)(*cookiep)) <= toff)) {
2989 cpos += dp->d_reclen;
2990 dp = (struct dirent *)cpos;
2991 cookiep++;
2992 ncookies--;
2993 }
2994 if (cpos >= cend || ncookies == 0) {
2995 toff = off;
2996 siz = fullsiz;
2997 goto again;
2998 }
2999
3000 len = 3 * NFSX_UNSIGNED; /* paranoia, probably can be 0 */
3001 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) + siz);
3002 if (v3) {
3003 nfsm_srvpostop_attr(getret, &at);
3004 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3005 txdr_hyper(at.va_filerev, tl);
3006 }
3007 mp = mp2 = mb;
3008 bp = bpos;
3009 be = bp + M_TRAILINGSPACE(mp);
3010
3011 /* Loop through the records and build reply */
3012 while (cpos < cend && ncookies > 0) {
3013 if (dp->d_fileno != 0 && dp->d_type != DT_WHT) {
3014 nlen = dp->d_namlen;
3015 rem = nfsm_rndup(nlen) - nlen;
3016 len += (4 * NFSX_UNSIGNED + nlen + rem);
3017 if (v3)
3018 len += 2 * NFSX_UNSIGNED;
3019 if (len > cnt) {
3020 eofflag = 0;
3021 break;
3022 }
3023 /*
3024 * Build the directory record xdr from
3025 * the dirent entry.
3026 */
3027 nfsm_clget;
3028 *tl = nfs_true;
3029 bp += NFSX_UNSIGNED;
3030 if (v3) {
3031 nfsm_clget;
3032 *tl = 0;
3033 bp += NFSX_UNSIGNED;
3034 }
3035 nfsm_clget;
3036 *tl = txdr_unsigned(dp->d_fileno);
3037 bp += NFSX_UNSIGNED;
3038 nfsm_clget;
3039 *tl = txdr_unsigned(nlen);
3040 bp += NFSX_UNSIGNED;
3041
3042 /* And loop around copying the name */
3043 xfer = nlen;
3044 cp = dp->d_name;
3045 while (xfer > 0) {
3046 nfsm_clget;
3047 if ((bp+xfer) > be)
3048 tsiz = be-bp;
3049 else
3050 tsiz = xfer;
3051 bcopy(cp, bp, tsiz);
3052 bp += tsiz;
3053 xfer -= tsiz;
3054 if (xfer > 0)
3055 cp += tsiz;
3056 }
3057 /* And null pad to a int32_t boundary */
3058 for (i = 0; i < rem; i++)
3059 *bp++ = '\0';
3060 nfsm_clget;
3061
3062 /* Finish off the record */
3063 if (v3) {
3064 *tl = 0;
3065 bp += NFSX_UNSIGNED;
3066 nfsm_clget;
3067 }
3068 *tl = txdr_unsigned(*cookiep);
3069 bp += NFSX_UNSIGNED;
3070 }
3071 cpos += dp->d_reclen;
3072 dp = (struct dirent *)cpos;
3073 cookiep++;
3074 ncookies--;
3075 }
3076 vrele(vp);
3077 vp = NULL;
3078 nfsm_clget;
3079 *tl = nfs_false;
3080 bp += NFSX_UNSIGNED;
3081 nfsm_clget;
3082 if (eofflag)
3083 *tl = nfs_true;
3084 else
3085 *tl = nfs_false;
3086 bp += NFSX_UNSIGNED;
3087 if (mp != mb) {
3088 if (bp < be)
3089 mp->m_len = bp - mtod(mp, caddr_t);
3090 } else
3091 mp->m_len += bp - bpos;
3092 FREE((caddr_t)rbuf, M_TEMP);
3093 FREE((caddr_t)cookies, M_TEMP);
3094
3095nfsmout:
3096 if (vp)
3097 vrele(vp);
3098 return(error);
3099}
3100
3101int
e851b29e
CP
3102nfsrv_readdirplus(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3103 struct thread *td, struct mbuf **mrq)
984263bc
MD
3104{
3105 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3106 struct sockaddr *nam = nfsd->nd_nam;
3107 caddr_t dpos = nfsd->nd_dpos;
3108 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3109 char *bp, *be;
3110 struct mbuf *mp;
3111 struct dirent *dp;
3112 caddr_t cp;
3113 u_int32_t *tl;
3114 int32_t t1;
984263bc
MD
3115 caddr_t bpos;
3116 struct mbuf *mb, *mb2, *mreq, *mp2;
3117 char *cpos, *cend, *cp2, *rbuf;
3118 struct vnode *vp = NULL, *nvp;
3119 struct flrep fl;
3120 nfsfh_t nfh;
3121 fhandle_t *fhp, *nfhp = (fhandle_t *)fl.fl_nfh;
3122 struct uio io;
3123 struct iovec iv;
3124 struct vattr va, at, *vap = &va;
3125 struct nfs_fattr *fp;
3126 int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
3127 int siz, cnt, fullsiz, eofflag, rdonly, cache, dirlen, ncookies;
3128 u_quad_t frev, off, toff, verf;
3129 u_long *cookies = NULL, *cookiep; /* needs to be int64_t or off_t */
3130
3131 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
3132 fhp = &nfh.fh_generic;
3133 nfsm_srvmtofh(fhp);
3134 nfsm_dissect(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
3135 toff = fxdr_hyper(tl);
3136 tl += 2;
3137 verf = fxdr_hyper(tl);
3138 tl += 2;
3139 siz = fxdr_unsigned(int, *tl++);
3140 cnt = fxdr_unsigned(int, *tl);
3141 off = toff;
3142 siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
3143 xfer = NFS_SRVMAXDATA(nfsd);
3144 if (cnt > xfer)
3145 cnt = xfer;
3146 if (siz > xfer)
3147 siz = xfer;
3148 fullsiz = siz;
3149 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3150 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3151 if (!error && vp->v_type != VDIR) {
3152 error = ENOTDIR;
3153 vput(vp);
3154 vp = NULL;
3155 }
3156 if (error) {
3157 nfsm_reply(NFSX_UNSIGNED);
3158 nfsm_srvpostop_attr(getret, &at);
3159 error = 0;
3160 goto nfsmout;
3161 }
3b568787 3162 error = getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
3163#if 0
3164 /*
3165 * XXX This check may be too strict for Solaris 2.5 clients.
3166 */
3167 if (!error && toff && verf && verf != at.va_filerev)
3168 error = NFSERR_BAD_COOKIE;
3169#endif
3170 if (!error) {
3171 nqsrv_getl(vp, ND_READ);
dadab5e9 3172 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 0);
984263bc
MD
3173 }
3174 if (error) {
3175 vput(vp);
3176 vp = NULL;
3177 nfsm_reply(NFSX_V3POSTOPATTR);
3178 nfsm_srvpostop_attr(getret, &at);
3179 error = 0;
3180 goto nfsmout;
3181 }
5fd012e0 3182 VOP_UNLOCK(vp, 0, td);
984263bc
MD
3183 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
3184again:
3185 iv.iov_base = rbuf;
3186 iv.iov_len = fullsiz;
3187 io.uio_iov = &iv;
3188 io.uio_iovcnt = 1;
3189 io.uio_offset = (off_t)off;
3190 io.uio_resid = fullsiz;
3191 io.uio_segflg = UIO_SYSSPACE;
3192 io.uio_rw = UIO_READ;
dadab5e9 3193 io.uio_td = NULL;
984263bc 3194 eofflag = 0;
5fd012e0 3195 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
984263bc
MD
3196 if (cookies) {
3197 free((caddr_t)cookies, M_TEMP);
3198 cookies = NULL;
3199 }
3200 error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
3201 off = (u_quad_t)io.uio_offset;
3b568787 3202 getret = VOP_GETATTR(vp, &at, td);
5fd012e0 3203 VOP_UNLOCK(vp, 0, td);
984263bc
MD
3204 if (!cookies && !error)
3205 error = NFSERR_PERM;
3206 if (!error)
3207 error = getret;
3208 if (error) {
3209 vrele(vp);
3210 vp = NULL;
3211 if (cookies)
3212 free((caddr_t)cookies, M_TEMP);
3213 free((caddr_t)rbuf, M_TEMP);
3214 nfsm_reply(NFSX_V3POSTOPATTR);
3215 nfsm_srvpostop_attr(getret, &at);
3216 error = 0;
3217 goto nfsmout;
3218 }
3219 if (io.uio_resid) {
3220 siz -= io.uio_resid;
3221
3222 /*
3223 * If nothing read, return eof
3224 * rpc reply
3225 */
3226 if (siz == 0) {
3227 vrele(vp);
3228 vp = NULL;
3229 nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF +
3230 2 * NFSX_UNSIGNED);
3231 nfsm_srvpostop_attr(getret, &at);
3232 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
3233 txdr_hyper(at.va_filerev, tl);
3234 tl += 2;
3235 *tl++ = nfs_false;
3236 *tl = nfs_true;
3237 FREE((caddr_t)cookies, M_TEMP);
3238 FREE((caddr_t)rbuf, M_TEMP);
3239 error = 0;
3240 goto nfsmout;
3241 }
3242 }
3243
3244 /*
3245 * Check for degenerate cases of nothing useful read.
3246 * If so go try again
3247 */
3248 cpos = rbuf;
3249 cend = rbuf + siz;
3250 dp = (struct dirent *)cpos;
3251 cookiep = cookies;
3252 /*
3253 * For some reason FreeBSD's ufs_readdir() chooses to back the
3254 * directory offset up to a block boundary, so it is necessary to
3255 * skip over the records that preceed the requested offset. This
3256 * requires the assumption that file offset cookies monotonically
3257 * increase.
3258 */
3259 while (cpos < cend && ncookies > 0 &&
3260 (dp->d_fileno == 0 || dp->d_type == DT_WHT ||
3261 ((u_quad_t)(*cookiep)) <= toff)) {
3262 cpos += dp->d_reclen;
3263 dp = (struct dirent *)cpos;
3264 cookiep++;
3265 ncookies--;
3266 }
3267 if (cpos >= cend || ncookies == 0) {
3268 toff = off;
3269 siz = fullsiz;
3270 goto again;
3271 }
3272
3273 /*
3274 * Probe one of the directory entries to see if the filesystem
3275 * supports VGET.
3276 */
3277 if (VFS_VGET(vp->v_mount, dp->d_fileno, &nvp) == EOPNOTSUPP) {
3278 error = NFSERR_NOTSUPP;
3279 vrele(vp);
3280 vp = NULL;
3281 free((caddr_t)cookies, M_TEMP);
3282 free((caddr_t)rbuf, M_TEMP);
3283 nfsm_reply(NFSX_V3POSTOPATTR);
3284 nfsm_srvpostop_attr(getret, &at);
3285 error = 0;
3286 goto nfsmout;
3287 }
3288 vput(nvp);
3289 nvp = NULL;
3290
3291 dirlen = len = NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF + 2 * NFSX_UNSIGNED;
3292 nfsm_reply(cnt);
3293 nfsm_srvpostop_attr(getret, &at);
3294 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3295 txdr_hyper(at.va_filerev, tl);
3296 mp = mp2 = mb;
3297 bp = bpos;
3298 be = bp + M_TRAILINGSPACE(mp);
3299
3300 /* Loop through the records and build reply */
3301 while (cpos < cend && ncookies > 0) {
3302 if (dp->d_fileno != 0 && dp->d_type != DT_WHT) {
3303 nlen = dp->d_namlen;
3304 rem = nfsm_rndup(nlen)-nlen;
3305
3306 /*
3307 * For readdir_and_lookup get the vnode using
3308 * the file number.
3309 */
3310 if (VFS_VGET(vp->v_mount, dp->d_fileno, &nvp))
3311 goto invalid;
3312 bzero((caddr_t)nfhp, NFSX_V3FH);
3313 nfhp->fh_fsid =
3314 nvp->v_mount->mnt_stat.f_fsid;
3315 if (VFS_VPTOFH(nvp, &nfhp->fh_fid)) {
3316 vput(nvp);
3317 nvp = NULL;
3318 goto invalid;
3319 }
3b568787 3320 if (VOP_GETATTR(nvp, vap, td)) {
984263bc
MD
3321 vput(nvp);
3322 nvp = NULL;
3323 goto invalid;
3324 }
3325 vput(nvp);
3326 nvp = NULL;
3327
3328 /*
3329 * If either the dircount or maxcount will be
3330 * exceeded, get out now. Both of these lengths
3331 * are calculated conservatively, including all
3332 * XDR overheads.
3333 */
3334 len += (8 * NFSX_UNSIGNED + nlen + rem + NFSX_V3FH +
3335 NFSX_V3POSTOPATTR);
3336 dirlen += (6 * NFSX_UNSIGNED + nlen + rem);
3337 if (len > cnt || dirlen > fullsiz) {
3338 eofflag = 0;
3339 break;
3340 }
3341
3342 /*
3343 * Build the directory record xdr from
3344 * the dirent entry.
3345 */
3346 fp = (struct nfs_fattr *)&fl.fl_fattr;
3347 nfsm_srvfillattr(vap, fp);
3348 fl.fl_fhsize = txdr_unsigned(NFSX_V3FH);
3349 fl.fl_fhok = nfs_true;
3350 fl.fl_postopok = nfs_true;
3351 fl.fl_off.nfsuquad[0] = 0;
3352 fl.fl_off.nfsuquad[1] = txdr_unsigned(*cookiep);
3353
3354 nfsm_clget;
3355 *tl = nfs_true;
3356 bp += NFSX_UNSIGNED;
3357 nfsm_clget;
3358 *tl = 0;
3359 bp += NFSX_UNSIGNED;
3360 nfsm_clget;
3361 *tl = txdr_unsigned(dp->d_fileno);
3362 bp += NFSX_UNSIGNED;
3363 nfsm_clget;
3364 *tl = txdr_unsigned(nlen);
3365 bp += NFSX_UNSIGNED;
3366
3367 /* And loop around copying the name */
3368 xfer = nlen;
3369 cp = dp->d_name;
3370 while (xfer > 0) {
3371 nfsm_clget;
3372 if ((bp + xfer) > be)
3373 tsiz = be - bp;
3374 else
3375 tsiz = xfer;
3376 bcopy(cp, bp, tsiz);
3377 bp += tsiz;
3378 xfer -= tsiz;
3379 if (xfer > 0)
3380 cp += tsiz;
3381 }
3382 /* And null pad to a int32_t boundary */
3383 for (i = 0; i < rem; i++)
3384 *bp++ = '\0';
3385
3386 /*
3387 * Now copy the flrep structure out.
3388 */
3389 xfer = sizeof (struct flrep);
3390 cp = (caddr_t)&fl;
3391 while (xfer > 0) {
3392 nfsm_clget;
3393 if ((bp + xfer) > be)
3394 tsiz = be - bp;
3395 else
3396 tsiz = xfer;
3397 bcopy(cp, bp, tsiz);
3398 bp += tsiz;
3399 xfer -= tsiz;
3400 if (xfer > 0)
3401 cp += tsiz;
3402 }
3403 }
3404invalid:
3405 cpos += dp->d_reclen;
3406 dp = (struct dirent *)cpos;
3407 cookiep++;
3408 ncookies--;
3409 }
3410 vrele(vp);
3411 vp = NULL;
3412 nfsm_clget;
3413 *tl = nfs_false;
3414 bp += NFSX_UNSIGNED;
3415 nfsm_clget;
3416 if (eofflag)
3417 *tl = nfs_true;
3418 else
3419 *tl = nfs_false;
3420 bp += NFSX_UNSIGNED;
3421 if (mp != mb) {
3422 if (bp < be)
3423 mp->m_len = bp - mtod(mp, caddr_t);
3424 } else
3425 mp->m_len += bp - bpos;
3426 FREE((caddr_t)cookies, M_TEMP);
3427 FREE((caddr_t)rbuf, M_TEMP);
3428nfsmout:
3429 if (vp)
3430 vrele(vp);
3431 return(error);
3432}
3433
3434/*
3435 * nfs commit service
3436 */
3437int
e851b29e
CP
3438nfsrv_commit(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3439 struct thread *td, struct mbuf **mrq)
984263bc
MD
3440{
3441 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3442 struct sockaddr *nam = nfsd->nd_nam;
3443 caddr_t dpos = nfsd->nd_dpos;
3444 struct ucred *cred = &nfsd->nd_cr;
3445 struct vattr bfor, aft;
3446 struct vnode *vp = NULL;
3447 nfsfh_t nfh;
3448 fhandle_t *fhp;
dadab5e9
MD
3449 u_int32_t *tl;
3450 int32_t t1;
984263bc
MD
3451 caddr_t bpos;
3452 int error = 0, rdonly, for_ret = 1, aft_ret = 1, cnt, cache;
3453 char *cp2;
3454 struct mbuf *mb, *mb2, *mreq;
3455 u_quad_t frev, off;
3456
3457 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
3458#ifndef nolint
3459 cache = 0;
3460#endif
3461 fhp = &nfh.fh_generic;
3462 nfsm_srvmtofh(fhp);
3463 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3464
3465 /*
3466 * XXX At this time VOP_FSYNC() does not accept offset and byte
3467 * count parameters, so these arguments are useless (someday maybe).
3468 */
3469 off = fxdr_hyper(tl);
3470 tl += 2;
3471 cnt = fxdr_unsigned(int, *tl);
3472 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3473 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3474 if (error) {
3475 nfsm_reply(2 * NFSX_UNSIGNED);
3476 nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
3477 error = 0;
3478 goto nfsmout;
3479 }
3b568787 3480 for_ret = VOP_GETATTR(vp, &bfor, td);
984263bc
MD
3481
3482 if (cnt > MAX_COMMIT_COUNT) {
3483 /*
3484 * Give up and do the whole thing
3485 */
3486 if (vp->v_object &&
3487 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
3488 vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC);
3489 }
3b568787 3490 error = VOP_FSYNC(vp, MNT_WAIT, td);
984263bc
MD
3491 } else {
3492 /*
3493 * Locate and synchronously write any buffers that fall
3494 * into the requested range. Note: we are assuming that
3495 * f_iosize is a power of 2.
3496 */
3497 int iosize = vp->v_mount->mnt_stat.f_iosize;
3498 int iomask = iosize - 1;
3499 int s;
3500 daddr_t lblkno;
3501
3502 /*
3503 * Align to iosize boundry, super-align to page boundry.
3504 */
3505 if (off & iomask) {
3506 cnt += off & iomask;
3507 off &= ~(u_quad_t)iomask;
3508 }
3509 if (off & PAGE_MASK) {
3510 cnt += off & PAGE_MASK;
3511 off &= ~(u_quad_t)PAGE_MASK;
3512 }
3513 lblkno = off / iosize;
3514
3515 if (vp->v_object &&
3516 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
3517 vm_object_page_clean(vp->v_object, off / PAGE_SIZE, (cnt + PAGE_MASK) / PAGE_SIZE, OBJPC_SYNC);
3518 }
3519
3520 s = splbio();
3521 while (cnt > 0) {
3522 struct buf *bp;
3523
3524 /*
3525 * If we have a buffer and it is marked B_DELWRI we
3526 * have to lock and write it. Otherwise the prior
3527 * write is assumed to have already been committed.
3528 */
3529 if ((bp = gbincore(vp, lblkno)) != NULL && (bp->b_flags & B_DELWRI)) {
3530 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT)) {
3531 BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL);
3532 continue; /* retry */
3533 }
3534 bremfree(bp);
3535 bp->b_flags &= ~B_ASYNC;
3536 VOP_BWRITE(bp->b_vp, bp);
3537 ++nfs_commit_miss;
3538 }
3539 ++nfs_commit_blks;
3540 if (cnt < iosize)
3541 break;
3542 cnt -= iosize;
3543 ++lblkno;
3544 }
3545 splx(s);
3546 }
3547
3b568787 3548 aft_ret = VOP_GETATTR(vp, &aft, td);
984263bc
MD
3549 vput(vp);
3550 vp = NULL;
3551 nfsm_reply(NFSX_V3WCCDATA + NFSX_V3WRITEVERF);
3552 nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
3553 if (!error) {
3554 nfsm_build(tl, u_int32_t *, NFSX_V3WRITEVERF);
3555 if (nfsver.tv_sec == 0)
3556 nfsver = boottime;
3557 *tl++ = txdr_unsigned(nfsver.tv_sec);
3a6f9faf 3558 *tl = txdr_unsigned(nfsver.tv_nsec / 1000);
984263bc
MD
3559 } else {
3560 error = 0;
3561 }
3562nfsmout:
3563 if (vp)
3564 vput(vp);
3565 return(error);
3566}
3567
3568/*
3569 * nfs statfs service
3570 */
3571int
e851b29e
CP
3572nfsrv_statfs(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3573 struct thread *td, struct mbuf **mrq)
984263bc
MD
3574{
3575 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3576 struct sockaddr *nam = nfsd->nd_nam;
3577 caddr_t dpos = nfsd->nd_dpos;
3578 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3579 struct statfs *sf;
3580 struct nfs_statfs *sfp;
3581 u_int32_t *tl;
3582 int32_t t1;
984263bc
MD
3583 caddr_t bpos;
3584 int error = 0, rdonly, cache, getret = 1;
3585 int v3 = (nfsd->nd_flag & ND_NFSV3);
3586 char *cp2;
3587 struct mbuf *mb, *mb2, *mreq;
3588 struct vnode *vp = NULL;
3589 struct vattr at;
3590 nfsfh_t nfh;
3591 fhandle_t *fhp;
3592 struct statfs statfs;
3593 u_quad_t frev, tval;
3594
3595 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
3596#ifndef nolint
3597 cache = 0;
3598#endif
3599 fhp = &nfh.fh_generic;
3600 nfsm_srvmtofh(fhp);
3601 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3602 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3603 if (error) {
3604 nfsm_reply(NFSX_UNSIGNED);
3605 nfsm_srvpostop_attr(getret, &at);
3606 error = 0;
3607 goto nfsmout;
3608 }
3609 sf = &statfs;
dadab5e9 3610 error = VFS_STATFS(vp->v_mount, sf, td);
3b568787 3611 getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
3612 vput(vp);
3613 vp = NULL;
3614 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_STATFS(v3));
3615 if (v3)
3616 nfsm_srvpostop_attr(getret, &at);
3617 if (error) {
3618 error = 0;
3619 goto nfsmout;
3620 }
3621 nfsm_build(sfp, struct nfs_statfs *, NFSX_STATFS(v3));
3622 if (v3) {
3623 tval = (u_quad_t)sf->f_blocks;
3624 tval *= (u_quad_t)sf->f_bsize;
3625 txdr_hyper(tval, &sfp->sf_tbytes);
3626 tval = (u_quad_t)sf->f_bfree;
3627 tval *= (u_quad_t)sf->f_bsize;
3628 txdr_hyper(tval, &sfp->sf_fbytes);
3629 tval = (u_quad_t)sf->f_bavail;
3630 tval *= (u_quad_t)sf->f_bsize;
3631 txdr_hyper(tval, &sfp->sf_abytes);
3632 sfp->sf_tfiles.nfsuquad[0] = 0;
3633 sfp->sf_tfiles.nfsuquad[1] = txdr_unsigned(sf->f_files);
3634 sfp->sf_ffiles.nfsuquad[0] = 0;
3635 sfp->sf_ffiles.nfsuquad[1] = txdr_unsigned(sf->f_ffree);
3636 sfp->sf_afiles.nfsuquad[0] = 0;
3637 sfp->sf_afiles.nfsuquad[1] = txdr_unsigned(sf->f_ffree);
3638 sfp->sf_invarsec = 0;
3639 } else {
3640 sfp->sf_tsize = txdr_unsigned(NFS_MAXDGRAMDATA);
3641 sfp->sf_bsize = txdr_unsigned(sf->f_bsize);
3642 sfp->sf_blocks = txdr_unsigned(sf->f_blocks);
3643 sfp->sf_bfree = txdr_unsigned(sf->f_bfree);
3644 sfp->sf_bavail = txdr_unsigned(sf->f_bavail);
3645 }
3646nfsmout:
3647 if (vp)
3648 vput(vp);
3649 return(error);
3650}
3651
3652/*
3653 * nfs fsinfo service
3654 */
3655int
e851b29e
CP
3656nfsrv_fsinfo(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3657 struct thread *td, struct mbuf **mrq)
984263bc
MD
3658{
3659 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3660 struct sockaddr *nam = nfsd->nd_nam;
3661 caddr_t dpos = nfsd->nd_dpos;
3662 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3663 u_int32_t *tl;
3664 struct nfsv3_fsinfo *sip;
3665 int32_t t1;
984263bc
MD
3666 caddr_t bpos;
3667 int error = 0, rdonly, cache, getret = 1, pref;
3668 char *cp2;
3669 struct mbuf *mb, *mb2, *mreq;
3670 struct vnode *vp = NULL;
3671 struct vattr at;
3672 nfsfh_t nfh;
3673 fhandle_t *fhp;
3674 u_quad_t frev, maxfsize;
3675 struct statfs sb;
3676
3677 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
3678#ifndef nolint
3679 cache = 0;
3680#endif
3681 fhp = &nfh.fh_generic;
3682 nfsm_srvmtofh(fhp);
3683 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3684 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3685 if (error) {
3686 nfsm_reply(NFSX_UNSIGNED);
3687 nfsm_srvpostop_attr(getret, &at);
3688 error = 0;
3689 goto nfsmout;
3690 }
3691
3692 /* XXX Try to make a guess on the max file size. */
dadab5e9 3693 VFS_STATFS(vp->v_mount, &sb, td);
984263bc
MD
3694 maxfsize = (u_quad_t)0x80000000 * sb.f_bsize - 1;
3695
3b568787 3696 getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
3697 vput(vp);
3698 vp = NULL;
3699 nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3FSINFO);
3700 nfsm_srvpostop_attr(getret, &at);
3701 nfsm_build(sip, struct nfsv3_fsinfo *, NFSX_V3FSINFO);
3702
3703 /*
3704 * XXX
3705 * There should be file system VFS OP(s) to get this information.
3706 * For now, assume ufs.
3707 */
3708 if (slp->ns_so->so_type == SOCK_DGRAM)
3709 pref = NFS_MAXDGRAMDATA;
3710 else
3711 pref = NFS_MAXDATA;
3712 sip->fs_rtmax = txdr_unsigned(NFS_MAXDATA);
3713 sip->fs_rtpref = txdr_unsigned(pref);
3714 sip->fs_rtmult = txdr_unsigned(NFS_FABLKSIZE);
3715 sip->fs_wtmax = txdr_unsigned(NFS_MAXDATA);
3716 sip->fs_wtpref = txdr_unsigned(pref);
3717 sip->fs_wtmult = txdr_unsigned(NFS_FABLKSIZE);
3718 sip->fs_dtpref = txdr_unsigned(pref);
3719 txdr_hyper(maxfsize, &sip->fs_maxfilesize);
3720 sip->fs_timedelta.nfsv3_sec = 0;
3721 sip->fs_timedelta.nfsv3_nsec = txdr_unsigned(1);
3722 sip->fs_properties = txdr_unsigned(NFSV3FSINFO_LINK |
3723 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
3724 NFSV3FSINFO_CANSETTIME);
3725nfsmout:
3726 if (vp)
3727 vput(vp);
3728 return(error);
3729}
3730
3731/*
3732 * nfs pathconf service
3733 */
3734int
e851b29e
CP
3735nfsrv_pathconf(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3736 struct thread *td, struct mbuf **mrq)
984263bc
MD
3737{
3738 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3739 struct sockaddr *nam = nfsd->nd_nam;
3740 caddr_t dpos = nfsd->nd_dpos;
3741 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3742 u_int32_t *tl;
3743 struct nfsv3_pathconf *pc;
3744 int32_t t1;
984263bc
MD
3745 caddr_t bpos;
3746 int error = 0, rdonly, cache, getret = 1;
3747 register_t linkmax, namemax, chownres, notrunc;
3748 char *cp2;
3749 struct mbuf *mb, *mb2, *mreq;
3750 struct vnode *vp = NULL;
3751 struct vattr at;
3752 nfsfh_t nfh;
3753 fhandle_t *fhp;
3754 u_quad_t frev;
3755
3756 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
3757#ifndef nolint
3758 cache = 0;
3759#endif
3760 fhp = &nfh.fh_generic;
3761 nfsm_srvmtofh(fhp);
3762 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3763 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3764 if (error) {
3765 nfsm_reply(NFSX_UNSIGNED)