Remove spl*() calls from kern, replacing them with critical sections.
[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 $
50503f0f 38 * $DragonFly: src/sys/vfs/nfs/nfs_serv.c,v 1.23 2005/05/29 10:08:36 hsu 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
e851b29e
CP
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;
fad57d0e
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) {
50503f0f
JH
649 mp = m_getcl(MB_WAIT, MT_DATA, 0);
650 mp->m_len = MCLBYTES;
984263bc
MD
651 if (len == 0)
652 mp3 = mp2 = mp;
653 else {
654 mp2->m_next = mp;
655 mp2 = mp;
656 }
657 if ((len+mp->m_len) > NFS_MAXPATHLEN) {
658 mp->m_len = NFS_MAXPATHLEN-len;
659 len = NFS_MAXPATHLEN;
660 } else
661 len += mp->m_len;
662 ivp->iov_base = mtod(mp, caddr_t);
663 ivp->iov_len = mp->m_len;
664 i++;
665 ivp++;
666 }
667 uiop->uio_iov = iv;
668 uiop->uio_iovcnt = i;
669 uiop->uio_offset = 0;
670 uiop->uio_resid = len;
671 uiop->uio_rw = UIO_READ;
672 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 673 uiop->uio_td = NULL;
984263bc
MD
674 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
675 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
676 if (error) {
677 nfsm_reply(2 * NFSX_UNSIGNED);
678 nfsm_srvpostop_attr(1, (struct vattr *)0);
679 error = 0;
680 goto nfsmout;
681 }
682 if (vp->v_type != VLNK) {
683 if (v3)
684 error = EINVAL;
685 else
686 error = ENXIO;
687 goto out;
688 }
689 nqsrv_getl(vp, ND_READ);
690 error = VOP_READLINK(vp, uiop, cred);
691out:
3b568787 692 getret = VOP_GETATTR(vp, &attr, td);
984263bc
MD
693 vput(vp);
694 vp = NULL;
695 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_UNSIGNED);
696 if (v3) {
697 nfsm_srvpostop_attr(getret, &attr);
698 if (error) {
699 error = 0;
700 goto nfsmout;
701 }
702 }
703 if (uiop->uio_resid > 0) {
704 len -= uiop->uio_resid;
705 tlen = nfsm_rndup(len);
706 nfsm_adj(mp3, NFS_MAXPATHLEN-tlen, tlen-len);
707 }
708 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
709 *tl = txdr_unsigned(len);
710 mb->m_next = mp3;
711 mp3 = NULL;
712nfsmout:
713 if (mp3)
714 m_freem(mp3);
715 if (vp)
716 vput(vp);
717 return(error);
718}
719
720/*
721 * nfs read service
722 */
723int
e851b29e
CP
724nfsrv_read(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
725 struct thread *td, struct mbuf **mrq)
984263bc
MD
726{
727 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
728 struct sockaddr *nam = nfsd->nd_nam;
729 caddr_t dpos = nfsd->nd_dpos;
730 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 731 struct iovec *iv;
984263bc 732 struct iovec *iv2;
dadab5e9
MD
733 struct mbuf *m;
734 struct nfs_fattr *fp;
735 u_int32_t *tl;
736 int32_t t1;
737 int i;
984263bc
MD
738 caddr_t bpos;
739 int error = 0, rdonly, cache, cnt, len, left, siz, tlen, getret;
740 int v3 = (nfsd->nd_flag & ND_NFSV3), reqlen;
741 char *cp2;
742 struct mbuf *mb, *mb2, *mreq;
743 struct mbuf *m2;
744 struct vnode *vp = NULL;
745 nfsfh_t nfh;
746 fhandle_t *fhp;
747 struct uio io, *uiop = &io;
748 struct vattr va, *vap = &va;
749 struct nfsheur *nh;
750 off_t off;
751 int ioflag = 0;
752 u_quad_t frev;
753
754 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
755 fhp = &nfh.fh_generic;
756 nfsm_srvmtofh(fhp);
757 if (v3) {
758 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
759 off = fxdr_hyper(tl);
760 } else {
761 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
762 off = (off_t)fxdr_unsigned(u_int32_t, *tl);
763 }
764 nfsm_srvstrsiz(reqlen, NFS_SRVMAXDATA(nfsd));
765
766 /*
767 * Reference vp. If an error occurs, vp will be invalid, but we
768 * have to NULL it just in case. The macros might goto nfsmout
769 * as well.
770 */
771
772 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
773 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
774 if (error) {
775 vp = NULL;
776 nfsm_reply(2 * NFSX_UNSIGNED);
777 nfsm_srvpostop_attr(1, (struct vattr *)0);
778 error = 0;
779 goto nfsmout;
780 }
781
782 if (vp->v_type != VREG) {
783 if (v3)
784 error = EINVAL;
785 else
786 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
787 }
788 if (!error) {
789 nqsrv_getl(vp, ND_READ);
dadab5e9
MD
790 if ((error = nfsrv_access(vp, VREAD, cred, rdonly, td, 1)) != 0)
791 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 1);
984263bc 792 }
3b568787 793 getret = VOP_GETATTR(vp, vap, td);
984263bc
MD
794 if (!error)
795 error = getret;
796 if (error) {
797 vput(vp);
798 vp = NULL;
799 nfsm_reply(NFSX_POSTOPATTR(v3));
800 nfsm_srvpostop_attr(getret, vap);
801 error = 0;
802 goto nfsmout;
803 }
804
805 /*
806 * Calculate byte count to read
807 */
808
809 if (off >= vap->va_size)
810 cnt = 0;
811 else if ((off + reqlen) > vap->va_size)
812 cnt = vap->va_size - off;
813 else
814 cnt = reqlen;
815
816 /*
817 * Calculate seqcount for heuristic
818 */
819
820 {
821 int hi;
053a4ed4 822 int try = 32;
984263bc
MD
823
824 /*
825 * Locate best candidate
826 */
827
053a4ed4 828 hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC;
984263bc
MD
829 nh = &nfsheur[hi];
830
831 while (try--) {
832 if (nfsheur[hi].nh_vp == vp) {
833 nh = &nfsheur[hi];
834 break;
835 }
836 if (nfsheur[hi].nh_use > 0)
837 --nfsheur[hi].nh_use;
053a4ed4 838 hi = (hi + 1) % NUM_HEURISTIC;
984263bc
MD
839 if (nfsheur[hi].nh_use < nh->nh_use)
840 nh = &nfsheur[hi];
841 }
842
843 if (nh->nh_vp != vp) {
844 nh->nh_vp = vp;
845 nh->nh_nextr = off;
846 nh->nh_use = NHUSE_INIT;
847 if (off == 0)
848 nh->nh_seqcount = 4;
849 else
850 nh->nh_seqcount = 1;
851 }
852
853 /*
854 * Calculate heuristic
855 */
856
857 if ((off == 0 && nh->nh_seqcount > 0) || off == nh->nh_nextr) {
858 if (++nh->nh_seqcount > IO_SEQMAX)
859 nh->nh_seqcount = IO_SEQMAX;
860 } else if (nh->nh_seqcount > 1) {
861 nh->nh_seqcount = 1;
862 } else {
863 nh->nh_seqcount = 0;
864 }
865 nh->nh_use += NHUSE_INC;
866 if (nh->nh_use > NHUSE_MAX)
867 nh->nh_use = NHUSE_MAX;
868 ioflag |= nh->nh_seqcount << IO_SEQSHIFT;
869 }
870
871 nfsm_reply(NFSX_POSTOPORFATTR(v3) + 3 * NFSX_UNSIGNED+nfsm_rndup(cnt));
872 if (v3) {
873 nfsm_build(tl, u_int32_t *, NFSX_V3FATTR + 4 * NFSX_UNSIGNED);
874 *tl++ = nfs_true;
875 fp = (struct nfs_fattr *)tl;
876 tl += (NFSX_V3FATTR / sizeof (u_int32_t));
877 } else {
878 nfsm_build(tl, u_int32_t *, NFSX_V2FATTR + NFSX_UNSIGNED);
879 fp = (struct nfs_fattr *)tl;
880 tl += (NFSX_V2FATTR / sizeof (u_int32_t));
881 }
882 len = left = nfsm_rndup(cnt);
883 if (cnt > 0) {
884 /*
885 * Generate the mbuf list with the uio_iov ref. to it.
886 */
887 i = 0;
888 m = m2 = mb;
889 while (left > 0) {
890 siz = min(M_TRAILINGSPACE(m), left);
891 if (siz > 0) {
892 left -= siz;
893 i++;
894 }
895 if (left > 0) {
50503f0f 896 m = m_getcl(MB_WAIT, MT_DATA, 0);
984263bc
MD
897 m->m_len = 0;
898 m2->m_next = m;
899 m2 = m;
900 }
901 }
902 MALLOC(iv, struct iovec *, i * sizeof (struct iovec),
903 M_TEMP, M_WAITOK);
904 uiop->uio_iov = iv2 = iv;
905 m = mb;
906 left = len;
907 i = 0;
908 while (left > 0) {
909 if (m == NULL)
910 panic("nfsrv_read iov");
911 siz = min(M_TRAILINGSPACE(m), left);
912 if (siz > 0) {
913 iv->iov_base = mtod(m, caddr_t) + m->m_len;
914 iv->iov_len = siz;
915 m->m_len += siz;
916 left -= siz;
917 iv++;
918 i++;
919 }
920 m = m->m_next;
921 }
922 uiop->uio_iovcnt = i;
923 uiop->uio_offset = off;
924 uiop->uio_resid = len;
925 uiop->uio_rw = UIO_READ;
926 uiop->uio_segflg = UIO_SYSSPACE;
927 error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred);
928 off = uiop->uio_offset;
929 nh->nh_nextr = off;
930 FREE((caddr_t)iv2, M_TEMP);
3b568787 931 if (error || (getret = VOP_GETATTR(vp, vap, td))) {
984263bc
MD
932 if (!error)
933 error = getret;
934 m_freem(mreq);
935 vput(vp);
936 vp = NULL;
937 nfsm_reply(NFSX_POSTOPATTR(v3));
938 nfsm_srvpostop_attr(getret, vap);
939 error = 0;
940 goto nfsmout;
941 }
942 } else {
943 uiop->uio_resid = 0;
944 }
945 vput(vp);
946 vp = NULL;
947 nfsm_srvfillattr(vap, fp);
948 tlen = len - uiop->uio_resid;
949 cnt = cnt < tlen ? cnt : tlen;
950 tlen = nfsm_rndup(cnt);
951 if (len != tlen || tlen != cnt)
952 nfsm_adj(mb, len - tlen, tlen - cnt);
953 if (v3) {
954 *tl++ = txdr_unsigned(cnt);
955 if (len < reqlen)
956 *tl++ = nfs_true;
957 else
958 *tl++ = nfs_false;
959 }
960 *tl = txdr_unsigned(cnt);
961nfsmout:
962 if (vp)
963 vput(vp);
964 return(error);
965}
966
967/*
968 * nfs write service
969 */
970int
e851b29e
CP
971nfsrv_write(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
972 struct thread *td, struct mbuf **mrq)
984263bc
MD
973{
974 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
975 struct sockaddr *nam = nfsd->nd_nam;
976 caddr_t dpos = nfsd->nd_dpos;
977 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
978 struct iovec *ivp;
979 int i, cnt;
980 struct mbuf *mp;
981 struct nfs_fattr *fp;
984263bc
MD
982 struct iovec *iv;
983 struct vattr va, forat;
dadab5e9
MD
984 struct vattr *vap = &va;
985 u_int32_t *tl;
986 int32_t t1;
984263bc
MD
987 caddr_t bpos;
988 int error = 0, rdonly, cache, len, forat_ret = 1;
989 int ioflags, aftat_ret = 1, retlen, zeroing, adjust;
990 int stable = NFSV3WRITE_FILESYNC;
991 int v3 = (nfsd->nd_flag & ND_NFSV3);
992 char *cp2;
993 struct mbuf *mb, *mb2, *mreq;
994 struct vnode *vp = NULL;
995 nfsfh_t nfh;
996 fhandle_t *fhp;
997 struct uio io, *uiop = &io;
998 off_t off;
999 u_quad_t frev;
1000
1001 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
1002 if (mrep == NULL) {
1003 *mrq = NULL;
1004 error = 0;
1005 goto nfsmout;
1006 }
1007 fhp = &nfh.fh_generic;
1008 nfsm_srvmtofh(fhp);
1009 if (v3) {
1010 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1011 off = fxdr_hyper(tl);
1012 tl += 3;
1013 stable = fxdr_unsigned(int, *tl++);
1014 } else {
1015 nfsm_dissect(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1016 off = (off_t)fxdr_unsigned(u_int32_t, *++tl);
1017 tl += 2;
1018 if (nfs_async)
1019 stable = NFSV3WRITE_UNSTABLE;
1020 }
1021 retlen = len = fxdr_unsigned(int32_t, *tl);
1022 cnt = i = 0;
1023
1024 /*
1025 * For NFS Version 2, it is not obvious what a write of zero length
1026 * should do, but I might as well be consistent with Version 3,
1027 * which is to return ok so long as there are no permission problems.
1028 */
1029 if (len > 0) {
1030 zeroing = 1;
1031 mp = mrep;
1032 while (mp) {
1033 if (mp == md) {
1034 zeroing = 0;
1035 adjust = dpos - mtod(mp, caddr_t);
1036 mp->m_len -= adjust;
1037 if (mp->m_len > 0 && adjust > 0)
1038 NFSMADV(mp, adjust);
1039 }
1040 if (zeroing)
1041 mp->m_len = 0;
1042 else if (mp->m_len > 0) {
1043 i += mp->m_len;
1044 if (i > len) {
1045 mp->m_len -= (i - len);
1046 zeroing = 1;
1047 }
1048 if (mp->m_len > 0)
1049 cnt++;
1050 }
1051 mp = mp->m_next;
1052 }
1053 }
1054 if (len > NFS_MAXDATA || len < 0 || i < len) {
1055 error = EIO;
1056 nfsm_reply(2 * NFSX_UNSIGNED);
1057 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1058 error = 0;
1059 goto nfsmout;
1060 }
1061 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
1062 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
1063 if (error) {
1064 vp = NULL;
1065 nfsm_reply(2 * NFSX_UNSIGNED);
1066 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1067 error = 0;
1068 goto nfsmout;
1069 }
1070 if (v3)
3b568787 1071 forat_ret = VOP_GETATTR(vp, &forat, td);
984263bc
MD
1072 if (vp->v_type != VREG) {
1073 if (v3)
1074 error = EINVAL;
1075 else
1076 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
1077 }
1078 if (!error) {
1079 nqsrv_getl(vp, ND_WRITE);
dadab5e9 1080 error = nfsrv_access(vp, VWRITE, cred, rdonly, td, 1);
984263bc
MD
1081 }
1082 if (error) {
1083 vput(vp);
1084 vp = NULL;
1085 nfsm_reply(NFSX_WCCDATA(v3));
1086 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1087 error = 0;
1088 goto nfsmout;
1089 }
1090
1091 if (len > 0) {
1092 MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP,
1093 M_WAITOK);
1094 uiop->uio_iov = iv = ivp;
1095 uiop->uio_iovcnt = cnt;
1096 mp = mrep;
1097 while (mp) {
1098 if (mp->m_len > 0) {
1099 ivp->iov_base = mtod(mp, caddr_t);
1100 ivp->iov_len = mp->m_len;
1101 ivp++;
1102 }
1103 mp = mp->m_next;
1104 }
1105
1106 /*
1107 * XXX
1108 * The IO_METASYNC flag indicates that all metadata (and not just
1109 * enough to ensure data integrity) mus be written to stable storage
1110 * synchronously.
1111 * (IO_METASYNC is not yet implemented in 4.4BSD-Lite.)
1112 */
1113 if (stable == NFSV3WRITE_UNSTABLE)
1114 ioflags = IO_NODELOCKED;
1115 else if (stable == NFSV3WRITE_DATASYNC)
1116 ioflags = (IO_SYNC | IO_NODELOCKED);
1117 else
1118 ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
1119 uiop->uio_resid = len;
1120 uiop->uio_rw = UIO_WRITE;
1121 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 1122 uiop->uio_td = NULL;
984263bc
MD
1123 uiop->uio_offset = off;
1124 error = VOP_WRITE(vp, uiop, ioflags, cred);
1125 nfsstats.srvvop_writes++;
1126 FREE((caddr_t)iv, M_TEMP);
1127 }
3b568787 1128 aftat_ret = VOP_GETATTR(vp, vap, td);
984263bc
MD
1129 vput(vp);
1130 vp = NULL;
1131 if (!error)
1132 error = aftat_ret;
1133 nfsm_reply(NFSX_PREOPATTR(v3) + NFSX_POSTOPORFATTR(v3) +
1134 2 * NFSX_UNSIGNED + NFSX_WRITEVERF(v3));
1135 if (v3) {
1136 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1137 if (error) {
1138 error = 0;
1139 goto nfsmout;
1140 }
1141 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1142 *tl++ = txdr_unsigned(retlen);
1143 /*
1144 * If nfs_async is set, then pretend the write was FILESYNC.
1145 */
1146 if (stable == NFSV3WRITE_UNSTABLE && !nfs_async)
1147 *tl++ = txdr_unsigned(stable);
1148 else
1149 *tl++ = txdr_unsigned(NFSV3WRITE_FILESYNC);
1150 /*
1151 * Actually, there is no need to txdr these fields,
1152 * but it may make the values more human readable,
1153 * for debugging purposes.
1154 */
1155 if (nfsver.tv_sec == 0)
1156 nfsver = boottime;
1157 *tl++ = txdr_unsigned(nfsver.tv_sec);
3a6f9faf 1158 *tl = txdr_unsigned(nfsver.tv_nsec / 1000);
984263bc
MD
1159 } else {
1160 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1161 nfsm_srvfillattr(vap, fp);
1162 }
1163nfsmout:
1164 if (vp)
1165 vput(vp);
1166 return(error);
1167}
1168
1169/*
1170 * NFS write service with write gathering support. Called when
1171 * nfsrvw_procrastinate > 0.
1172 * See: Chet Juszczak, "Improving the Write Performance of an NFS Server",
1173 * in Proc. of the Winter 1994 Usenix Conference, pg. 247-259, San Franscisco,
1174 * Jan. 1994.
1175 */
1176int
e851b29e
CP
1177nfsrv_writegather(struct nfsrv_descript **ndp, struct nfssvc_sock *slp,
1178 struct thread *td, struct mbuf **mrq)
984263bc 1179{
dadab5e9
MD
1180 struct iovec *ivp;
1181 struct mbuf *mp;
1182 struct nfsrv_descript *wp, *nfsd, *owp, *swp;
1183 struct nfs_fattr *fp;
1184 int i;
984263bc
MD
1185 struct iovec *iov;
1186 struct nfsrvw_delayhash *wpp;
1187 struct ucred *cred;
1188 struct vattr va, forat;
dadab5e9
MD
1189 u_int32_t *tl;
1190 int32_t t1;
984263bc
MD
1191 caddr_t bpos, dpos;
1192 int error = 0, rdonly, cache, len, forat_ret = 1;
1193 int ioflags, aftat_ret = 1, s, adjust, v3, zeroing;
1194 char *cp2;
1195 struct mbuf *mb, *mb2, *mreq, *mrep, *md;
1196 struct vnode *vp = NULL;
1197 struct uio io, *uiop = &io;
1198 u_quad_t frev, cur_usec;
1199
1200 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
1201#ifndef nolint
1202 i = 0;
1203 len = 0;
1204#endif
1205 *mrq = NULL;
1206 if (*ndp) {
1207 nfsd = *ndp;
1208 *ndp = NULL;
1209 mrep = nfsd->nd_mrep;
1210 md = nfsd->nd_md;
1211 dpos = nfsd->nd_dpos;
1212 cred = &nfsd->nd_cr;
1213 v3 = (nfsd->nd_flag & ND_NFSV3);
1214 LIST_INIT(&nfsd->nd_coalesce);
1215 nfsd->nd_mreq = NULL;
1216 nfsd->nd_stable = NFSV3WRITE_FILESYNC;
1217 cur_usec = nfs_curusec();
1218 nfsd->nd_time = cur_usec +
1219 (v3 ? nfsrvw_procrastinate_v3 : nfsrvw_procrastinate);
1220
1221 /*
1222 * Now, get the write header..
1223 */
1224 nfsm_srvmtofh(&nfsd->nd_fh);
1225 if (v3) {
1226 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1227 nfsd->nd_off = fxdr_hyper(tl);
1228 tl += 3;
1229 nfsd->nd_stable = fxdr_unsigned(int, *tl++);
1230 } else {
1231 nfsm_dissect(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1232 nfsd->nd_off = (off_t)fxdr_unsigned(u_int32_t, *++tl);
1233 tl += 2;
1234 if (nfs_async)
1235 nfsd->nd_stable = NFSV3WRITE_UNSTABLE;
1236 }
1237 len = fxdr_unsigned(int32_t, *tl);
1238 nfsd->nd_len = len;
1239 nfsd->nd_eoff = nfsd->nd_off + len;
1240
1241 /*
1242 * Trim the header out of the mbuf list and trim off any trailing
1243 * junk so that the mbuf list has only the write data.
1244 */
1245 zeroing = 1;
1246 i = 0;
1247 mp = mrep;
1248 while (mp) {
1249 if (mp == md) {
1250 zeroing = 0;
1251 adjust = dpos - mtod(mp, caddr_t);
1252 mp->m_len -= adjust;
1253 if (mp->m_len > 0 && adjust > 0)
1254 NFSMADV(mp, adjust);
1255 }
1256 if (zeroing)
1257 mp->m_len = 0;
1258 else {
1259 i += mp->m_len;
1260 if (i > len) {
1261 mp->m_len -= (i - len);
1262 zeroing = 1;
1263 }
1264 }
1265 mp = mp->m_next;
1266 }
1267 if (len > NFS_MAXDATA || len < 0 || i < len) {
1268nfsmout:
1269 m_freem(mrep);
1270 error = EIO;
1271 nfsm_writereply(2 * NFSX_UNSIGNED, v3);
1272 if (v3)
1273 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1274 nfsd->nd_mreq = mreq;
1275 nfsd->nd_mrep = NULL;
1276 nfsd->nd_time = 0;
1277 }
1278
1279 /*
1280 * Add this entry to the hash and time queues.
1281 */
1282 s = splsoftclock();
1283 owp = NULL;
1284 wp = slp->ns_tq.lh_first;
1285 while (wp && wp->nd_time < nfsd->nd_time) {
1286 owp = wp;
1287 wp = wp->nd_tq.le_next;
1288 }
1289 NFS_DPF(WG, ("Q%03x", nfsd->nd_retxid & 0xfff));
1290 if (owp) {
1291 LIST_INSERT_AFTER(owp, nfsd, nd_tq);
1292 } else {
1293 LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
1294 }
1295 if (nfsd->nd_mrep) {
1296 wpp = NWDELAYHASH(slp, nfsd->nd_fh.fh_fid.fid_data);
1297 owp = NULL;
1298 wp = wpp->lh_first;
1299 while (wp &&
1300 bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
1301 owp = wp;
1302 wp = wp->nd_hash.le_next;
1303 }
1304 while (wp && wp->nd_off < nfsd->nd_off &&
1305 !bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
1306 owp = wp;
1307 wp = wp->nd_hash.le_next;
1308 }
1309 if (owp) {
1310 LIST_INSERT_AFTER(owp, nfsd, nd_hash);
1311
1312 /*
1313 * Search the hash list for overlapping entries and
1314 * coalesce.
1315 */
1316 for(; nfsd && NFSW_CONTIG(owp, nfsd); nfsd = wp) {
1317 wp = nfsd->nd_hash.le_next;
1318 if (NFSW_SAMECRED(owp, nfsd))
1319 nfsrvw_coalesce(owp, nfsd);
1320 }
1321 } else {
1322 LIST_INSERT_HEAD(wpp, nfsd, nd_hash);
1323 }
1324 }
1325 splx(s);
1326 }
1327
1328 /*
1329 * Now, do VOP_WRITE()s for any one(s) that need to be done now
1330 * and generate the associated reply mbuf list(s).
1331 */
1332loop1:
1333 cur_usec = nfs_curusec();
1334 s = splsoftclock();
1335 for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = owp) {
1336 owp = nfsd->nd_tq.le_next;
1337 if (nfsd->nd_time > cur_usec)
1338 break;
1339 if (nfsd->nd_mreq)
1340 continue;
1341 NFS_DPF(WG, ("P%03x", nfsd->nd_retxid & 0xfff));
1342 LIST_REMOVE(nfsd, nd_tq);
1343 LIST_REMOVE(nfsd, nd_hash);
1344 splx(s);
1345 mrep = nfsd->nd_mrep;
1346 nfsd->nd_mrep = NULL;
1347 cred = &nfsd->nd_cr;
1348 v3 = (nfsd->nd_flag & ND_NFSV3);
1349 forat_ret = aftat_ret = 1;
1350 error = nfsrv_fhtovp(&nfsd->nd_fh, 1, &vp, cred, slp,
1351 nfsd->nd_nam, &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
1352 if (!error) {
1353 if (v3)
3b568787 1354 forat_ret = VOP_GETATTR(vp, &forat, td);
984263bc
MD
1355 if (vp->v_type != VREG) {
1356 if (v3)
1357 error = EINVAL;
1358 else
1359 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
1360 }
1361 } else {
1362 vp = NULL;
1363 }
1364 if (!error) {
1365 nqsrv_getl(vp, ND_WRITE);
dadab5e9 1366 error = nfsrv_access(vp, VWRITE, cred, rdonly, td, 1);
984263bc
MD
1367 }
1368
1369 if (nfsd->nd_stable == NFSV3WRITE_UNSTABLE)
1370 ioflags = IO_NODELOCKED;
1371 else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC)
1372 ioflags = (IO_SYNC | IO_NODELOCKED);
1373 else
1374 ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
1375 uiop->uio_rw = UIO_WRITE;
1376 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 1377 uiop->uio_td = NULL;
984263bc
MD
1378 uiop->uio_offset = nfsd->nd_off;
1379 uiop->uio_resid = nfsd->nd_eoff - nfsd->nd_off;
1380 if (uiop->uio_resid > 0) {
1381 mp = mrep;
1382 i = 0;
1383 while (mp) {
1384 if (mp->m_len > 0)
1385 i++;
1386 mp = mp->m_next;
1387 }
1388 uiop->uio_iovcnt = i;
1389 MALLOC(iov, struct iovec *, i * sizeof (struct iovec),
1390 M_TEMP, M_WAITOK);
1391 uiop->uio_iov = ivp = iov;
1392 mp = mrep;
1393 while (mp) {
1394 if (mp->m_len > 0) {
1395 ivp->iov_base = mtod(mp, caddr_t);
1396 ivp->iov_len = mp->m_len;
1397 ivp++;
1398 }
1399 mp = mp->m_next;
1400 }
1401 if (!error) {
1402 error = VOP_WRITE(vp, uiop, ioflags, cred);
1403 nfsstats.srvvop_writes++;
1404 }
1405 FREE((caddr_t)iov, M_TEMP);
1406 }
1407 m_freem(mrep);
1408 if (vp) {
3b568787 1409 aftat_ret = VOP_GETATTR(vp, &va, td);
984263bc
MD
1410 vput(vp);
1411 vp = NULL;
1412 }
1413
1414 /*
1415 * Loop around generating replies for all write rpcs that have
1416 * now been completed.
1417 */
1418 swp = nfsd;
1419 do {
1420 NFS_DPF(WG, ("R%03x", nfsd->nd_retxid & 0xfff));
1421 if (error) {
1422 nfsm_writereply(NFSX_WCCDATA(v3), v3);
1423 if (v3) {
1424 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1425 }
1426 } else {
1427 nfsm_writereply(NFSX_PREOPATTR(v3) +
1428 NFSX_POSTOPORFATTR(v3) + 2 * NFSX_UNSIGNED +
1429 NFSX_WRITEVERF(v3), v3);
1430 if (v3) {
1431 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1432 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1433 *tl++ = txdr_unsigned(nfsd->nd_len);
1434 *tl++ = txdr_unsigned(swp->nd_stable);
1435 /*
1436 * Actually, there is no need to txdr these fields,
1437 * but it may make the values more human readable,
1438 * for debugging purposes.
1439 */
1440 if (nfsver.tv_sec == 0)
1441 nfsver = boottime;
1442 *tl++ = txdr_unsigned(nfsver.tv_sec);
3a6f9faf 1443 *tl = txdr_unsigned(nfsver.tv_nsec / 1000);
984263bc
MD
1444 } else {
1445 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1446 nfsm_srvfillattr(&va, fp);
1447 }
1448 }
1449 nfsd->nd_mreq = mreq;
1450 if (nfsd->nd_mrep)
1451 panic("nfsrv_write: nd_mrep not free");
1452
1453 /*
1454 * Done. Put it at the head of the timer queue so that
1455 * the final phase can return the reply.
1456 */
1457 s = splsoftclock();
1458 if (nfsd != swp) {
1459 nfsd->nd_time = 0;
1460 LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
1461 }
1462 nfsd = swp->nd_coalesce.lh_first;
1463 if (nfsd) {
1464 LIST_REMOVE(nfsd, nd_tq);
1465 }
1466 splx(s);
1467 } while (nfsd);
1468 s = splsoftclock();
1469 swp->nd_time = 0;
1470 LIST_INSERT_HEAD(&slp->ns_tq, swp, nd_tq);
1471 splx(s);
1472 goto loop1;
1473 }
1474 splx(s);
1475
1476 /*
1477 * Search for a reply to return.
1478 */
1479 s = splsoftclock();
1480 for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = nfsd->nd_tq.le_next)
1481 if (nfsd->nd_mreq) {
1482 NFS_DPF(WG, ("X%03x", nfsd->nd_retxid & 0xfff));
1483 LIST_REMOVE(nfsd, nd_tq);
1484 *mrq = nfsd->nd_mreq;
1485 *ndp = nfsd;
1486 break;
1487 }
1488 splx(s);
1489 return (0);
1490}
1491
1492/*
1493 * Coalesce the write request nfsd into owp. To do this we must:
1494 * - remove nfsd from the queues
1495 * - merge nfsd->nd_mrep into owp->nd_mrep
1496 * - update the nd_eoff and nd_stable for owp
1497 * - put nfsd on owp's nd_coalesce list
1498 * NB: Must be called at splsoftclock().
1499 */
1500static void
dadab5e9 1501nfsrvw_coalesce(struct nfsrv_descript *owp, struct nfsrv_descript *nfsd)
984263bc 1502{
dadab5e9
MD
1503 int overlap;
1504 struct mbuf *mp;
984263bc
MD
1505 struct nfsrv_descript *p;
1506
1507 NFS_DPF(WG, ("C%03x-%03x",
1508 nfsd->nd_retxid & 0xfff, owp->nd_retxid & 0xfff));
1509 LIST_REMOVE(nfsd, nd_hash);
1510 LIST_REMOVE(nfsd, nd_tq);
1511 if (owp->nd_eoff < nfsd->nd_eoff) {
1512 overlap = owp->nd_eoff - nfsd->nd_off;
1513 if (overlap < 0)
1514 panic("nfsrv_coalesce: bad off");
1515 if (overlap > 0)
1516 m_adj(nfsd->nd_mrep, overlap);
1517 mp = owp->nd_mrep;
1518 while (mp->m_next)
1519 mp = mp->m_next;
1520 mp->m_next = nfsd->nd_mrep;
1521 owp->nd_eoff = nfsd->nd_eoff;
1522 } else
1523 m_freem(nfsd->nd_mrep);
1524 nfsd->nd_mrep = NULL;
1525 if (nfsd->nd_stable == NFSV3WRITE_FILESYNC)
1526 owp->nd_stable = NFSV3WRITE_FILESYNC;
1527 else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC &&
1528 owp->nd_stable == NFSV3WRITE_UNSTABLE)
1529 owp->nd_stable = NFSV3WRITE_DATASYNC;
1530 LIST_INSERT_HEAD(&owp->nd_coalesce, nfsd, nd_tq);
1531
1532 /*
1533 * If nfsd had anything else coalesced into it, transfer them
1534 * to owp, otherwise their replies will never get sent.
1535 */
1536 for (p = nfsd->nd_coalesce.lh_first; p;
1537 p = nfsd->nd_coalesce.lh_first) {
1538 LIST_REMOVE(p, nd_tq);
1539 LIST_INSERT_HEAD(&owp->nd_coalesce, p, nd_tq);
1540 }
1541}
1542
1543/*
1544 * nfs create service
1545 * now does a truncate to 0 length via. setattr if it already exists
1546 */
1547int
e851b29e
CP
1548nfsrv_create(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1549 struct thread *td, struct mbuf **mrq)
984263bc
MD
1550{
1551 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1552 struct sockaddr *nam = nfsd->nd_nam;
1553 caddr_t dpos = nfsd->nd_dpos;
1554 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 1555 struct nfs_fattr *fp;
984263bc 1556 struct vattr va, dirfor, diraft;
dadab5e9
MD
1557 struct vattr *vap = &va;
1558 struct nfsv2_sattr *sp;
1559 u_int32_t *tl;
fad57d0e 1560 struct nlookupdata nd;
dadab5e9 1561 int32_t t1;
984263bc
MD
1562 caddr_t bpos;
1563 int error = 0, rdev, cache, len, tsize, dirfor_ret = 1, diraft_ret = 1;
1564 int v3 = (nfsd->nd_flag & ND_NFSV3), how, exclusive_flag = 0;
1565 caddr_t cp;
1566 char *cp2;
1567 struct mbuf *mb, *mb2, *mreq;
fad57d0e
MD
1568 struct vnode *dirp;
1569 struct vnode *dvp;
1570 struct vnode *vp;
984263bc
MD
1571 nfsfh_t nfh;
1572 fhandle_t *fhp;
1573 u_quad_t frev, tempsize;
1574 u_char cverf[NFSX_V3CREATEVERF];
1575
1576 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
1577#ifndef nolint
1578 rdev = 0;
1579#endif
fad57d0e
MD
1580 nlookup_zero(&nd);
1581 dirp = NULL;
1582 dvp = NULL;
1583 vp = NULL;
984263bc
MD
1584
1585 fhp = &nfh.fh_generic;
1586 nfsm_srvmtofh(fhp);
1587 nfsm_srvnamesiz(len);
1588
984263bc
MD
1589 /*
1590 * Call namei and do initial cleanup to get a few things
1591 * out of the way. If we get an initial error we cleanup
1592 * and return here to avoid special-casing the invalid nd
1593 * structure through the rest of the case. dirp may be
1594 * set even if an error occurs, but the nd structure will not
1595 * be valid at all if an error occurs so we have to invalidate it
1596 * prior to calling nfsm_reply ( which might goto nfsmout ).
1597 */
fad57d0e
MD
1598 error = nfs_namei(&nd, cred, NAMEI_CREATE, &dvp, &vp,
1599 fhp, len, slp, nam, &md, &dpos, &dirp,
1600 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc
MD
1601 if (dirp) {
1602 if (v3) {
3b568787 1603 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
1604 } else {
1605 vrele(dirp);
1606 dirp = NULL;
1607 }
1608 }
1609 if (error) {
1610 nfsm_reply(NFSX_WCCDATA(v3));
1611 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1612 error = 0;
1613 goto nfsmout;
1614 }
1615
1616 /*
1617 * No error. Continue. State:
1618 *
984263bc 1619 * dirp may be valid
fad57d0e
MD
1620 * vp may be valid or NULL if the target does not
1621 * exist.
1622 * dvp is valid
984263bc
MD
1623 *
1624 * The error state is set through the code and we may also do some
1625 * opportunistic releasing of vnodes to avoid holding locks through
1626 * NFS I/O. The cleanup at the end is a catch-all
1627 */
1628
1629 VATTR_NULL(vap);
1630 if (v3) {
1631 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
1632 how = fxdr_unsigned(int, *tl);
1633 switch (how) {
1634 case NFSV3CREATE_GUARDED:
fad57d0e 1635 if (vp) {
984263bc
MD
1636 error = EEXIST;
1637 break;
1638 }
1639 /* fall through */
1640 case NFSV3CREATE_UNCHECKED:
1641 nfsm_srvsattr(vap);
1642 break;
1643 case NFSV3CREATE_EXCLUSIVE:
1644 nfsm_dissect(cp, caddr_t, NFSX_V3CREATEVERF);
1645 bcopy(cp, cverf, NFSX_V3CREATEVERF);
1646 exclusive_flag = 1;
1647 break;
1648 };
1649 vap->va_type = VREG;
1650 } else {
1651 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
1652 vap->va_type = IFTOVT(fxdr_unsigned(u_int32_t, sp->sa_mode));
1653 if (vap->va_type == VNON)
1654 vap->va_type = VREG;
1655 vap->va_mode = nfstov_mode(sp->sa_mode);
1656 switch (vap->va_type) {
1657 case VREG:
1658 tsize = fxdr_unsigned(int32_t, sp->sa_size);
1659 if (tsize != -1)
1660 vap->va_size = (u_quad_t)tsize;
1661 break;
1662 case VCHR:
1663 case VBLK:
1664 case VFIFO:
1665 rdev = fxdr_unsigned(long, sp->sa_size);
1666 break;
1667 default:
1668 break;
1669 };
1670 }
1671
1672 /*
1673 * Iff doesn't exist, create it
1674 * otherwise just truncate to 0 length
1675 * should I set the mode too ?
1676 *
1677 * The only possible error we can have at this point is EEXIST.
1678 * nd.ni_vp will also be non-NULL in that case.
1679 */
fad57d0e 1680 if (vp == NULL) {
984263bc
MD
1681 if (vap->va_mode == (mode_t)VNOVAL)
1682 vap->va_mode = 0;
1683 if (vap->va_type == VREG || vap->va_type == VSOCK) {
fad57d0e
MD
1684 nqsrv_getl(dvp, ND_WRITE);
1685 error = VOP_NCREATE(nd.nl_ncp, &vp, nd.nl_cred, vap);
1686 if (error == 0) {
1687 nfsrv_object_create(vp);
984263bc
MD
1688 if (exclusive_flag) {
1689 exclusive_flag = 0;
1690 VATTR_NULL(vap);
1691 bcopy(cverf, (caddr_t)&vap->va_atime,
1692 NFSX_V3CREATEVERF);
fad57d0e 1693 error = VOP_SETATTR(vp, vap, cred, td);
984263bc
MD
1694 }
1695 }
1696 } else if (
1697 vap->va_type == VCHR ||
1698 vap->va_type == VBLK ||
1699 vap->va_type == VFIFO
1700 ) {
1701 /*
1702 * Handle SysV FIFO node special cases. All other
1703 * devices require super user to access.
1704 */
1705 if (vap->va_type == VCHR && rdev == 0xffffffff)
1706 vap->va_type = VFIFO;
1707 if (vap->va_type != VFIFO &&
dadab5e9 1708 (error = suser_cred(cred, 0))) {
984263bc
MD
1709 goto nfsmreply0;
1710 }
1711 vap->va_rdev = rdev;
fad57d0e 1712 nqsrv_getl(dvp, ND_WRITE);
984263bc 1713
fad57d0e
MD
1714 error = VOP_NMKNOD(nd.nl_ncp, &vp, nd.nl_cred, vap);
1715 if (error)
984263bc 1716 goto nfsmreply0;
fad57d0e
MD
1717#if 0
1718 /*
1719 * XXX what is this junk supposed to do ?
1720 */
1721
1722 vput(vp);
1723 vp = NULL;
984263bc
MD
1724
1725 /*
1726 * release dvp prior to lookup
1727 */
fad57d0e
MD
1728 vput(dvp);
1729 dvp = NULL;
984263bc
MD
1730
1731 /*
1732 * Setup for lookup.
1733 *
1734 * Even though LOCKPARENT was cleared, ni_dvp may
1735 * be garbage.
1736 */
2b69e610
MD
1737 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
1738 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT);
dadab5e9 1739 nd.ni_cnd.cn_td = td;
984263bc
MD
1740 nd.ni_cnd.cn_cred = cred;
1741
1742 error = lookup(&nd);
1743 nd.ni_dvp = NULL;
1744
1745 if (error != 0) {
1746 nfsm_reply(0);
1747 /* fall through on certain errors */
1748 }
1749 nfsrv_object_create(nd.ni_vp);
2b69e610 1750 if (nd.ni_cnd.cn_flags & CNP_ISSYMLINK) {
984263bc
MD
1751 error = EINVAL;
1752 goto nfsmreply0;
1753 }
fad57d0e 1754#endif
984263bc
MD
1755 } else {
1756 error = ENXIO;
1757 }
1758 } else {
1759 if (vap->va_size != -1) {
fad57d0e
MD
1760 error = nfsrv_access(vp, VWRITE, cred,
1761 (nd.nl_flags & NLC_NFS_RDONLY), td, 0);
984263bc 1762 if (!error) {
fad57d0e 1763 nqsrv_getl(vp, ND_WRITE);
984263bc
MD
1764 tempsize = vap->va_size;
1765 VATTR_NULL(vap);
1766 vap->va_size = tempsize;
fad57d0e 1767 error = VOP_SETATTR(vp, vap, cred, td);
984263bc
MD
1768 }
1769 }
1770 }
1771
1772 if (!error) {
1773 bzero((caddr_t)fhp, sizeof(nfh));
fad57d0e
MD
1774 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1775 error = VFS_VPTOFH(vp, &fhp->fh_fid);
984263bc 1776 if (!error)
fad57d0e 1777 error = VOP_GETATTR(vp, vap, td);
984263bc
MD
1778 }
1779 if (v3) {
1780 if (exclusive_flag && !error &&
1781 bcmp(cverf, (caddr_t)&vap->va_atime, NFSX_V3CREATEVERF))
1782 error = EEXIST;
3b568787 1783 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
1784 vrele(dirp);
1785 dirp = NULL;
1786 }
1787 nfsm_reply(NFSX_SRVFH(v3) + NFSX_FATTR(v3) + NFSX_WCCDATA(v3));
1788 if (v3) {
1789 if (!error) {
1790 nfsm_srvpostop_fh(fhp);
1791 nfsm_srvpostop_attr(0, vap);
1792 }
1793 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1794 error = 0;
1795 } else {
1796 nfsm_srvfhtom(fhp, v3);
1797 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1798 nfsm_srvfillattr(vap, fp);
1799 }
1800 goto nfsmout;
1801
1802nfsmreply0:
1803 nfsm_reply(0);
1804 error = 0;
1805 /* fall through */
1806
1807nfsmout:
984263bc
MD
1808 if (dirp)
1809 vrele(dirp);
fad57d0e
MD
1810 nlookup_done(&nd);
1811 if (dvp) {
1812 if (dvp == vp)
1813 vrele(dvp);
984263bc 1814 else
fad57d0e 1815 vput(dvp);
984263bc 1816 }
fad57d0e
MD
1817 if (vp)
1818 vput(vp);
984263bc
MD
1819 return (error);
1820}
1821
1822/*
1823 * nfs v3 mknod service
1824 */
1825int
e851b29e
CP
1826nfsrv_mknod(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1827 struct thread *td, struct mbuf **mrq)
984263bc
MD
1828{
1829 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1830 struct sockaddr *nam = nfsd->nd_nam;
1831 caddr_t dpos = nfsd->nd_dpos;
1832 struct ucred *cred = &nfsd->nd_cr;
1833 struct vattr va, dirfor, diraft;
dadab5e9
MD
1834 struct vattr *vap = &va;
1835 u_int32_t *tl;
fad57d0e 1836 struct nlookupdata nd;
dadab5e9 1837 int32_t t1;
984263bc
MD
1838 caddr_t bpos;
1839 int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
1840 u_int32_t major, minor;
1841 enum vtype vtyp;
1842 char *cp2;
1843 struct mbuf *mb, *mb2, *mreq;
fad57d0e
MD
1844 struct vnode *dirp;
1845 struct vnode *dvp;
1846 struct vnode *vp;
984263bc
MD
1847 nfsfh_t nfh;
1848 fhandle_t *fhp;
1849 u_quad_t frev;
1850
1851 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
1852 nlookup_zero(&nd);
1853 dirp = NULL;
1854 dvp = NULL;
1855 vp = NULL;
984263bc
MD
1856
1857 fhp = &nfh.fh_generic;
1858 nfsm_srvmtofh(fhp);
1859 nfsm_srvnamesiz(len);
1860
984263bc
MD
1861 /*
1862 * Handle nfs_namei() call. If an error occurs, the nd structure
1863 * is not valid. However, nfsm_*() routines may still jump to
1864 * nfsmout.
1865 */
1866
fad57d0e
MD
1867 error = nfs_namei(&nd, cred, NAMEI_CREATE, &dvp, &vp,
1868 fhp, len, slp, nam, &md, &dpos, &dirp,
1869 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 1870 if (dirp)
3b568787 1871 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
1872 if (error) {
1873 nfsm_reply(NFSX_WCCDATA(1));
1874 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1875 error = 0;
1876 goto nfsmout;
1877 }
1878 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
1879 vtyp = nfsv3tov_type(*tl);
1880 if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) {
1881 error = NFSERR_BADTYPE;
1882 goto out;
1883 }
1884 VATTR_NULL(vap);
1885 nfsm_srvsattr(vap);
1886 if (vtyp == VCHR || vtyp == VBLK) {
1887 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1888 major = fxdr_unsigned(u_int32_t, *tl++);
1889 minor = fxdr_unsigned(u_int32_t, *tl);
1890 vap->va_rdev = makeudev(major, minor);
1891 }
1892
1893 /*
1894 * Iff doesn't exist, create it.
1895 */
fad57d0e 1896 if (vp) {
984263bc
MD
1897 error = EEXIST;
1898 goto out;
1899 }
1900 vap->va_type = vtyp;
1901 if (vap->va_mode == (mode_t)VNOVAL)
1902 vap->va_mode = 0;
1903 if (vtyp == VSOCK) {
fad57d0e
MD
1904 nqsrv_getl(dvp, ND_WRITE);
1905 error = VOP_NCREATE(nd.nl_ncp, &vp, nd.nl_cred, vap);
984263bc 1906 } else {
dadab5e9 1907 if (vtyp != VFIFO && (error = suser_cred(cred, 0)))
984263bc 1908 goto out;
fad57d0e 1909 nqsrv_getl(dvp, ND_WRITE);
984263bc 1910
fad57d0e
MD
1911 error = VOP_NMKNOD(nd.nl_ncp, &vp, nd.nl_cred, vap);
1912 if (error)
984263bc 1913 goto out;
fad57d0e
MD
1914
1915#if 0
1916 vput(vp);
1917 vp = NULL;
984263bc
MD
1918
1919 /*
1920 * Release dvp prior to lookup
1921 */
fad57d0e
MD
1922 vput(dvp);
1923 dvp = NULL;
984263bc 1924
fad57d0e
MD
1925 /*
1926 * XXX what is this stuff for?
1927 */
dadab5e9 1928 KKASSERT(td->td_proc);
2b69e610
MD
1929 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
1930 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT);
dadab5e9
MD
1931 nd.ni_cnd.cn_td = td;
1932 nd.ni_cnd.cn_cred = td->td_proc->p_ucred;
984263bc
MD
1933
1934 error = lookup(&nd);
1935 nd.ni_dvp = NULL;
1936
1937 if (error)
1938 goto out;
2b69e610 1939 if (nd.ni_cnd.cn_flags & CNP_ISSYMLINK)
984263bc 1940 error = EINVAL;
fad57d0e 1941#endif
984263bc
MD
1942 }
1943
1944 /*
1945 * send response, cleanup, return.
1946 */
1947out:
fad57d0e
MD
1948 nlookup_done(&nd);
1949 if (dvp) {
1950 if (dvp == vp)
1951 vrele(dvp);
984263bc 1952 else
fad57d0e
MD
1953 vput(dvp);
1954 dvp = NULL;
984263bc 1955 }
984263bc
MD
1956 if (!error) {
1957 bzero((caddr_t)fhp, sizeof(nfh));
1958 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1959 error = VFS_VPTOFH(vp, &fhp->fh_fid);
1960 if (!error)
3b568787 1961 error = VOP_GETATTR(vp, vap, td);
984263bc
MD
1962 }
1963 if (vp) {
1964 vput(vp);
1965 vp = NULL;
984263bc 1966 }
3b568787 1967 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
1968 if (dirp) {
1969 vrele(dirp);
1970 dirp = NULL;
1971 }
1972 nfsm_reply(NFSX_SRVFH(1) + NFSX_POSTOPATTR(1) + NFSX_WCCDATA(1));
1973 if (!error) {
1974 nfsm_srvpostop_fh(fhp);
1975 nfsm_srvpostop_attr(0, vap);
1976 }
1977 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1978 return (0);
1979nfsmout:
1980 if (dirp)
1981 vrele(dirp);
fad57d0e
MD
1982 nlookup_done(&nd);
1983 if (dvp) {
1984 if (dvp == vp)
1985 vrele(dvp);
984263bc 1986 else
fad57d0e 1987 vput(dvp);
984263bc 1988 }
fad57d0e
MD
1989 if (vp)
1990 vput(vp);
984263bc
MD
1991 return (error);
1992}
1993
1994/*
1995 * nfs remove service
1996 */
1997int
e851b29e
CP
1998nfsrv_remove(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1999 struct thread *td, struct mbuf **mrq)
984263bc
MD
2000{
2001 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2002 struct sockaddr *nam = nfsd->nd_nam;
2003 caddr_t dpos = nfsd->nd_dpos;
2004 struct ucred *cred = &nfsd->nd_cr;
fad57d0e 2005 struct nlookupdata nd;
dadab5e9
MD
2006 u_int32_t *tl;
2007 int32_t t1;
984263bc
MD
2008 caddr_t bpos;
2009 int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
2010 int v3 = (nfsd->nd_flag & ND_NFSV3);
2011 char *cp2;
2012 struct mbuf *mb, *mreq;
2013 struct vnode *dirp;
fad57d0e
MD
2014 struct vnode *dvp;
2015 struct vnode *vp;
984263bc
MD
2016 struct vattr dirfor, diraft;
2017 nfsfh_t nfh;
2018 fhandle_t *fhp;
2019 u_quad_t frev;
2020
2021 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2022 nlookup_zero(&nd);
2023 dirp = NULL;
2024 dvp = NULL;
2025 vp = NULL;
984263bc
MD
2026
2027 fhp = &nfh.fh_generic;
2028 nfsm_srvmtofh(fhp);
2029 nfsm_srvnamesiz(len);
2030
fad57d0e
MD
2031 error = nfs_namei(&nd, cred, NAMEI_DELETE, &dvp, &vp,
2032 fhp, len, slp, nam, &md, &dpos, &dirp,
2033 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2034 if (dirp) {
fad57d0e 2035 if (v3)
3b568787 2036 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2037 }
2038 if (error == 0) {
fad57d0e 2039 if (vp->v_type == VDIR) {
984263bc
MD
2040 error = EPERM; /* POSIX */
2041 goto out;
2042 }
2043 /*
2044 * The root of a mounted filesystem cannot be deleted.
2045 */
fad57d0e 2046 if (vp->v_flag & VROOT) {
984263bc
MD
2047 error = EBUSY;
2048 goto out;
2049 }
2050out:
2051 if (!error) {
fad57d0e
MD
2052 nqsrv_getl(dvp, ND_WRITE);
2053 nqsrv_getl(vp, ND_WRITE);
2054 error = VOP_NREMOVE(nd.nl_ncp, nd.nl_cred);
984263bc
MD
2055 }
2056 }
fad57d0e 2057 if (dirp && v3)
3b568787 2058 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2059 nfsm_reply(NFSX_WCCDATA(v3));
2060 if (v3) {
2061 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2062 error = 0;
2063 }
2064nfsmout:
fad57d0e
MD
2065 nlookup_done(&nd);
2066 if (dirp)
2067 vrele(dirp);
2068 if (dvp) {
2069 if (dvp == vp)
2070 vrele(dvp);
984263bc 2071 else
fad57d0e 2072 vput(dvp);
984263bc 2073 }
fad57d0e
MD
2074 if (vp)
2075 vput(vp);
984263bc
MD
2076 return(error);
2077}
2078
2079/*
2080 * nfs rename service
2081 */
2082int
e851b29e
CP
2083nfsrv_rename(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2084 struct thread *td, struct mbuf **mrq)
984263bc
MD
2085{
2086 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2087 struct sockaddr *nam = nfsd->nd_nam;
2088 caddr_t dpos = nfsd->nd_dpos;
2089 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2090 u_int32_t *tl;
2091 int32_t t1;
984263bc 2092 caddr_t bpos;
5df949e9 2093 int error = 0, cache = 0, len, len2, fdirfor_ret = 1, fdiraft_ret = 1;
984263bc
MD
2094 int tdirfor_ret = 1, tdiraft_ret = 1;
2095 int v3 = (nfsd->nd_flag & ND_NFSV3);
2096 char *cp2;
2097 struct mbuf *mb, *mreq;
fad57d0e
MD
2098 struct nlookupdata fromnd, tond;
2099 struct vnode *fvp, *fdirp;
2100 struct vnode *tvp, *tdirp;
2101 struct namecache *ncp;
984263bc
MD
2102 struct vattr fdirfor, fdiraft, tdirfor, tdiraft;
2103 nfsfh_t fnfh, tnfh;
2104 fhandle_t *ffhp, *tfhp;
2105 u_quad_t frev;
2106 uid_t saved_uid;
2107
2108 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2109#ifndef nolint
2110 fvp = (struct vnode *)0;
2111#endif
2112 ffhp = &fnfh.fh_generic;
2113 tfhp = &tnfh.fh_generic;
2114
2115 /*
2116 * Clear fields incase goto nfsmout occurs from macro.
2117 */
2118
fad57d0e
MD
2119 nlookup_zero(&fromnd);
2120 nlookup_zero(&tond);
2121 fdirp = NULL;
2122 tdirp = NULL;
984263bc
MD
2123
2124 nfsm_srvmtofh(ffhp);
2125 nfsm_srvnamesiz(len);
2126 /*
2127 * Remember our original uid so that we can reset cr_uid before
2128 * the second nfs_namei() call, in case it is remapped.
2129 */
2130 saved_uid = cred->cr_uid;
fad57d0e
MD
2131 error = nfs_namei(&fromnd, cred, NAMEI_DELETE, NULL, NULL,
2132 ffhp, len, slp, nam, &md, &dpos, &fdirp,
2133 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2134 if (fdirp) {
fad57d0e 2135 if (v3)
3b568787 2136 fdirfor_ret = VOP_GETATTR(fdirp, &fdirfor, td);
984263bc
MD
2137 }
2138 if (error) {
2139 nfsm_reply(2 * NFSX_WCCDATA(v3));
2140 nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
2141 nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
2142 error = 0;
2143 goto nfsmout;
2144 }
fad57d0e
MD
2145
2146 /*
2147 * We have to unlock the from ncp before we can safely lookup
2148 * the target ncp.
2149 */
2150 KKASSERT(fromnd.nl_flags & NLC_NCPISLOCKED);
2151 cache_unlock(fromnd.nl_ncp);
2152 fromnd.nl_flags &= ~NLC_NCPISLOCKED;
984263bc
MD
2153 nfsm_srvmtofh(tfhp);
2154 nfsm_strsiz(len2, NFS_MAXNAMLEN);
2155 cred->cr_uid = saved_uid;
fad57d0e
MD
2156
2157 error = nfs_namei(&tond, cred, NAMEI_RENAME, NULL, NULL,
2158 tfhp, len2, slp, nam, &md, &dpos, &tdirp,
2159 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2160 if (tdirp) {
fad57d0e 2161 if (v3)
3b568787 2162 tdirfor_ret = VOP_GETATTR(tdirp, &tdirfor, td);
984263bc
MD
2163 }
2164 if (error)
2165 goto out1;
2166
fad57d0e
MD
2167 /*
2168 * relock the source
2169 */
2170 if (cache_lock_nonblock(fromnd.nl_ncp) == 0) {
2171 cache_resolve(fromnd.nl_ncp, fromnd.nl_cred);
2172 } else if (fromnd.nl_ncp > tond.nl_ncp) {
2173 cache_lock(fromnd.nl_ncp);
2174 cache_resolve(fromnd.nl_ncp, fromnd.nl_cred);
2175 } else {
2176 cache_unlock(tond.nl_ncp);
2177 cache_lock(fromnd.nl_ncp);
2178 cache_resolve(fromnd.nl_ncp, fromnd.nl_cred);
2179 cache_lock(tond.nl_ncp);
2180 cache_resolve(tond.nl_ncp, tond.nl_cred);
2181 }
2182 fromnd.nl_flags |= NLC_NCPISLOCKED;
2183
2184 tvp = tond.nl_ncp->nc_vp;
2185 fvp = fromnd.nl_ncp->nc_vp;
2186
984263bc
MD
2187 if (tvp != NULL) {
2188 if (fvp->v_type == VDIR && tvp->v_type != VDIR) {
2189 if (v3)
2190 error = EEXIST;
2191 else
2192 error = EISDIR;
2193 goto out;
2194 } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) {
2195 if (v3)
2196 error = EEXIST;
2197 else
2198 error = ENOTDIR;
2199 goto out;
2200 }
2201 if (tvp->v_type == VDIR && tvp->v_mountedhere) {
2202 if (v3)
2203 error = EXDEV;
2204 else
2205 error = ENOTEMPTY;
2206 goto out;
2207 }
2208 }
2209 if (fvp->v_type == VDIR && fvp->v_mountedhere) {
2210 if (v3)
2211 error = EXDEV;
2212 else
2213 error = ENOTEMPTY;
2214 goto out;
2215 }
fad57d0e 2216 if (fromnd.nl_ncp->nc_mount != tond.nl_ncp->nc_mount) {
984263bc
MD
2217 if (v3)
2218 error = EXDEV;
2219 else
2220 error = ENOTEMPTY;
2221 goto out;
2222 }
fad57d0e 2223 if (fromnd.nl_ncp == tond.nl_ncp->nc_parent) {
984263bc
MD
2224 if (v3)
2225 error = EINVAL;
2226 else
2227 error = ENOTEMPTY;
2228 }
fad57d0e
MD
2229
2230 /*
2231 * You cannot rename a source into itself or a subdirectory of itself.
2232 * We check this by travsering the target directory upwards looking
2233 * for a match against the source.
2234 */
2235 if (error == 0) {
2236 for (ncp = tond.nl_ncp; ncp; ncp = ncp->nc_parent) {
2237 if (fromnd.nl_ncp == ncp) {
2238 error = EINVAL;
2239 break;
2240 }
2241 }
2242 }
2243
984263bc
MD
2244 /*
2245 * If source is the same as the destination (that is the
2246 * same vnode with the same name in the same directory),
2247 * then there is nothing to do.
2248 */
fad57d0e 2249 if (fromnd.nl_ncp == tond.nl_ncp)
984263bc
MD
2250 error = -1;
2251out:
2252 if (!error) {
2253 /*
fad57d0e 2254 * The VOP_NRENAME function releases all vnode references &
984263bc
MD
2255 * locks prior to returning so we need to clear the pointers
2256 * to bypass cleanup code later on.
2257 */
fad57d0e
MD
2258#if 0
2259 /* XXX should be handled by NRENAME */
2260 nqsrv_getl(fdvp, ND_WRITE);
984263bc
MD
2261 nqsrv_getl(tdvp, ND_WRITE);
2262 if (tvp) {
2263 nqsrv_getl(tvp, ND_WRITE);
2264 }
fad57d0e
MD
2265#endif
2266 error = VOP_NRENAME(fromnd.nl_ncp, tond.nl_ncp, tond.nl_cred);
984263bc
MD
2267 } else {
2268 if (error == -1)
2269 error = 0;
2270 }
2271 /* fall through */
2272
2273out1:
2274 if (fdirp)
3b568787 2275 fdiraft_ret = VOP_GETATTR(fdirp, &fdiraft, td);
984263bc 2276 if (tdirp)
3b568787 2277 tdiraft_ret = VOP_GETATTR(tdirp, &tdiraft, td);
984263bc
MD
2278 nfsm_reply(2 * NFSX_WCCDATA(v3));
2279 if (v3) {
2280 nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
2281 nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
2282 }
2283 error = 0;
2284 /* fall through */
2285
2286nfsmout:
984263bc
MD
2287 if (tdirp)
2288 vrele(tdirp);
fad57d0e 2289 nlookup_done(&tond);
984263bc
MD
2290 if (fdirp)
2291 vrele(fdirp);
fad57d0e 2292 nlookup_done(&fromnd);
984263bc
MD
2293 return (error);
2294}
2295
2296/*
2297 * nfs link service
2298 */
2299int
e851b29e
CP
2300nfsrv_link(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2301 struct thread *td, struct mbuf **mrq)
984263bc
MD
2302{
2303 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2304 struct sockaddr *nam = nfsd->nd_nam;
2305 caddr_t dpos = nfsd->nd_dpos;
2306 struct ucred *cred = &nfsd->nd_cr;
fad57d0e 2307 struct nlookupdata nd;
dadab5e9
MD
2308 u_int32_t *tl;
2309 int32_t t1;
984263bc 2310 caddr_t bpos;
5df949e9 2311 int error = 0, rdonly, cache = 0, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2312 int getret = 1, v3 = (nfsd->nd_flag & ND_NFSV3);
2313 char *cp2;
2314 struct mbuf *mb, *mreq;
fad57d0e
MD
2315 struct vnode *dirp;
2316 struct vnode *dvp;
2317 struct vnode *vp;
2318 struct vnode *xp;
984263bc
MD
2319 struct vattr dirfor, diraft, at;
2320 nfsfh_t nfh, dnfh;
2321 fhandle_t *fhp, *dfhp;
2322 u_quad_t frev;
2323
2324 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2325 nlookup_zero(&nd);
2326 dirp = dvp = vp = xp = NULL;
984263bc
MD
2327
2328 fhp = &nfh.fh_generic;
2329 dfhp = &dnfh.fh_generic;
2330 nfsm_srvmtofh(fhp);
2331 nfsm_srvmtofh(dfhp);
2332 nfsm_srvnamesiz(len);
2333
fad57d0e 2334 error = nfsrv_fhtovp(fhp, FALSE, &xp, cred, slp, nam,
984263bc
MD
2335 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
2336 if (error) {
2337 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2338 nfsm_srvpostop_attr(getret, &at);
2339 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
fad57d0e 2340 xp = NULL;
984263bc
MD
2341 error = 0;
2342 goto nfsmout;
2343 }
fad57d0e 2344 if (xp->v_type == VDIR) {
984263bc
MD
2345 error = EPERM; /* POSIX */
2346 goto out1;
2347 }
fad57d0e
MD
2348
2349 error = nfs_namei(&nd, cred, NAMEI_CREATE, &dvp, &vp,
2350 dfhp, len, slp, nam, &md, &dpos, &dirp,
2351 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2352 if (dirp) {
fad57d0e 2353 if (v3)
3b568787 2354 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2355 }
2356 if (error)
2357 goto out1;
2358
fad57d0e 2359 if (vp != NULL) {
984263bc
MD
2360 error = EEXIST;
2361 goto out;
2362 }
fad57d0e 2363 if (xp->v_mount != dvp->v_mount)
984263bc
MD
2364 error = EXDEV;
2365out:
2366 if (!error) {
fad57d0e 2367#if 0
984263bc 2368 nqsrv_getl(xp, ND_WRITE);
fad57d0e
MD
2369 nqsrv_getl(vp, ND_WRITE);
2370#endif
2371 error = VOP_NLINK(nd.nl_ncp, xp, nd.nl_cred);
984263bc
MD
2372 }
2373 /* fall through */
2374
2375out1:
2376 if (v3)
fad57d0e 2377 getret = VOP_GETATTR(xp, &at, td);
984263bc 2378 if (dirp)
3b568787 2379 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2380 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2381 if (v3) {
2382 nfsm_srvpostop_attr(getret, &at);
2383 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2384 error = 0;
2385 }
2386 /* fall through */
2387
2388nfsmout:
fad57d0e 2389 nlookup_done(&nd);
984263bc
MD
2390 if (dirp)
2391 vrele(dirp);
fad57d0e
MD
2392 if (xp)
2393 vrele(xp);
2394 if (dvp) {
2395 if (dvp == vp)
2396 vrele(dvp);
984263bc 2397 else
fad57d0e 2398 vput(dvp);
984263bc 2399 }
fad57d0e
MD
2400 if (vp)
2401 vput(vp);
984263bc
MD
2402 return(error);
2403}
2404
2405/*
2406 * nfs symbolic link service
2407 */
2408int
e851b29e
CP
2409nfsrv_symlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2410 struct thread *td, struct mbuf **mrq)
984263bc
MD
2411{
2412 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2413 struct sockaddr *nam = nfsd->nd_nam;
2414 caddr_t dpos = nfsd->nd_dpos;
2415 struct ucred *cred = &nfsd->nd_cr;
2416 struct vattr va, dirfor, diraft;
fad57d0e 2417 struct nlookupdata nd;
dadab5e9
MD
2418 struct vattr *vap = &va;
2419 u_int32_t *tl;
2420 int32_t t1;
984263bc
MD
2421 struct nfsv2_sattr *sp;
2422 char *bpos, *pathcp = (char *)0, *cp2;
2423 struct uio io;
2424 struct iovec iv;
5df949e9 2425 int error = 0, cache = 0, len, len2, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2426 int v3 = (nfsd->nd_flag & ND_NFSV3);
2427 struct mbuf *mb, *mreq, *mb2;
fad57d0e
MD
2428 struct vnode *dirp;
2429 struct vnode *vp;
984263bc
MD
2430 nfsfh_t nfh;
2431 fhandle_t *fhp;
2432 u_quad_t frev;
2433
2434 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2435 nlookup_zero(&nd);
2436 dirp = vp = NULL;
984263bc
MD
2437
2438 fhp = &nfh.fh_generic;
2439 nfsm_srvmtofh(fhp);
2440 nfsm_srvnamesiz(len);
fad57d0e
MD
2441
2442 error = nfs_namei(&nd, cred, NAMEI_CREATE, NULL, &vp,
2443 fhp, len, slp, nam, &md, &dpos, &dirp,
2444 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2445 if (dirp) {
fad57d0e 2446 if (v3)
3b568787 2447 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2448 }
2449 if (error)
2450 goto out;
2451
2452 VATTR_NULL(vap);
2453 if (v3)
2454 nfsm_srvsattr(vap);
2455 nfsm_strsiz(len2, NFS_MAXPATHLEN);
2456 MALLOC(pathcp, caddr_t, len2 + 1, M_TEMP, M_WAITOK);
2457 iv.iov_base = pathcp;
2458 iv.iov_len = len2;
2459 io.uio_resid = len2;
2460 io.uio_offset = 0;
2461 io.uio_iov = &iv;
2462 io.uio_iovcnt = 1;
2463 io.uio_segflg = UIO_SYSSPACE;
2464 io.uio_rw = UIO_READ;
dadab5e9 2465 io.uio_td = NULL;
984263bc
MD
2466 nfsm_mtouio(&io, len2);
2467 if (!v3) {
2468 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
2469 vap->va_mode = nfstov_mode(sp->sa_mode);
2470 }
2471 *(pathcp + len2) = '\0';
fad57d0e 2472 if (vp) {
984263bc
MD
2473 error = EEXIST;
2474 goto out;
2475 }
2476
984263bc
MD
2477 if (vap->va_mode == (mode_t)VNOVAL)
2478 vap->va_mode = 0;
fad57d0e
MD
2479#if 0
2480 nqsrv_getl(dvp, ND_WRITE);
2481#endif
2482 error = VOP_NSYMLINK(nd.nl_ncp, &vp, nd.nl_cred, vap, pathcp);
2483 if (error == 0) {
2484 bzero((caddr_t)fhp, sizeof(nfh));
2485 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
2486 error = VFS_VPTOFH(vp, &fhp->fh_fid);
2487 if (!error)
2488 error = VOP_GETATTR(vp, vap, td);
2489 }
2490
2491#if 0
984263bc 2492 /*
fad57d0e
MD
2493 * We have a vp in hand from the new API call, we do not have to
2494 * look it up again.
984263bc 2495 */
984263bc
MD
2496 if (error == 0) {
2497 if (v3) {
2498 /*
2499 * Issue lookup. Leave SAVESTART set so we can easily free
2500 * the name buffer later on.
2501 *
2502 * since LOCKPARENT is not set, ni_dvp will be garbage on
2503 * return whether an error occurs or not.
2504 */
2b69e610
MD
2505 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
2506 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT | CNP_FOLLOW);
dadab5e9 2507 nd.ni_cnd.cn_td = td;
984263bc
MD
2508 nd.ni_cnd.cn_cred = cred;
2509
2510 error = lookup(&nd);
2511 nd.ni_dvp = NULL;
2512
2513 if (error == 0) {
2514 bzero((caddr_t)fhp, sizeof(nfh));
2515 fhp->fh_fsid = nd.ni_vp->v_mount->mnt_stat.f_fsid;
2516 error = VFS_VPTOFH(nd.ni_vp, &fhp->fh_fid);
2517 if (!error)
3b568787 2518 error = VOP_GETATTR(nd.ni_vp, vap, td);
984263bc
MD
2519 vput(nd.ni_vp);
2520 nd.ni_vp = NULL;
2521 }
2522 }
2523 }
fad57d0e 2524#endif
984263bc 2525out:
fad57d0e
MD
2526 if (vp) {
2527 vput(vp);
2528 vp = NULL;
2529 }
984263bc
MD
2530 if (pathcp) {
2531 FREE(pathcp, M_TEMP);
2532 pathcp = NULL;
2533 }
2534 if (dirp) {
3b568787 2535 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2536 vrele(dirp);
2537 dirp = NULL;
2538 }
984263bc
MD
2539 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2540 if (v3) {
2541 if (!error) {
2542 nfsm_srvpostop_fh(fhp);
2543 nfsm_srvpostop_attr(0, vap);
2544 }
2545 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2546 }
2547 error = 0;
2548 /* fall through */
2549
2550nfsmout:
fad57d0e
MD
2551 nlookup_done(&nd);
2552 if (vp)
2553 vput(vp);
984263bc
MD
2554 if (dirp)
2555 vrele(dirp);
2556 if (pathcp)
2557 FREE(pathcp, M_TEMP);
984263bc
MD
2558 return (error);
2559}
2560
2561/*
2562 * nfs mkdir service
2563 */
2564int
e851b29e
CP
2565nfsrv_mkdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2566 struct thread *td, struct mbuf **mrq)
984263bc
MD
2567{
2568 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2569 struct sockaddr *nam = nfsd->nd_nam;
2570 caddr_t dpos = nfsd->nd_dpos;
2571 struct ucred *cred = &nfsd->nd_cr;
2572 struct vattr va, dirfor, diraft;
dadab5e9
MD
2573 struct vattr *vap = &va;
2574 struct nfs_fattr *fp;
fad57d0e 2575 struct nlookupdata nd;
dadab5e9
MD
2576 caddr_t cp;
2577 u_int32_t *tl;
2578 int32_t t1;
984263bc 2579 caddr_t bpos;
5df949e9 2580 int error = 0, cache = 0, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2581 int v3 = (nfsd->nd_flag & ND_NFSV3);
2582 char *cp2;
2583 struct mbuf *mb, *mb2, *mreq;
fad57d0e
MD
2584 struct vnode *dirp;
2585 struct vnode *vp;
984263bc
MD
2586 nfsfh_t nfh;
2587 fhandle_t *fhp;
2588 u_quad_t frev;
2589
2590 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2591 nlookup_zero(&nd);
2592 dirp = NULL;
2593 vp = NULL;
984263bc
MD
2594
2595 fhp = &nfh.fh_generic;
2596 nfsm_srvmtofh(fhp);
2597 nfsm_srvnamesiz(len);
984263bc 2598
fad57d0e
MD
2599 error = nfs_namei(&nd, cred, NAMEI_CREATE, NULL, &vp,
2600 fhp, len, slp, nam, &md, &dpos, &dirp,
2601 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2602 if (dirp) {
fad57d0e 2603 if (v3)
3b568787 2604 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2605 }
2606 if (error) {
2607 nfsm_reply(NFSX_WCCDATA(v3));
2608 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2609 error = 0;
2610 goto nfsmout;
2611 }
2612 VATTR_NULL(vap);
2613 if (v3) {
2614 nfsm_srvsattr(vap);
2615 } else {
2616 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
2617 vap->va_mode = nfstov_mode(*tl++);
2618 }
2619
2620 /*
2621 * At this point nd.ni_dvp is referenced and exclusively locked and
2622 * nd.ni_vp, if it exists, is referenced but not locked.
2623 */
2624
2625 vap->va_type = VDIR;
fad57d0e 2626 if (vp != NULL) {
984263bc
MD
2627 error = EEXIST;
2628 goto out;
2629 }
2630
2631 /*
2632 * Issue mkdir op. Since SAVESTART is not set, the pathname
2633 * component is freed by the VOP call. This will fill-in
2634 * nd.ni_vp, reference, and exclusively lock it.
2635 */
2636 if (vap->va_mode == (mode_t)VNOVAL)
2637 vap->va_mode = 0;
fad57d0e 2638#if 0
984263bc 2639 nqsrv_getl(nd.ni_dvp, ND_WRITE);
fad57d0e
MD
2640#endif
2641 error = VOP_NMKDIR(nd.nl_ncp, &vp, nd.nl_cred, vap);
984263bc 2642
fad57d0e 2643 if (error == 0) {
984263bc 2644 bzero((caddr_t)fhp, sizeof(nfh));
fad57d0e
MD
2645 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
2646 error = VFS_VPTOFH(vp, &fhp->fh_fid);
2647 if (error == 0)
2648 error = VOP_GETATTR(vp, vap, td);
984263bc
MD
2649 }
2650out:
2651 if (dirp)
3b568787 2652 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2653 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2654 if (v3) {
2655 if (!error) {
2656 nfsm_srvpostop_fh(fhp);
2657 nfsm_srvpostop_attr(0, vap);
2658 }
2659 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2660 } else {
2661 nfsm_srvfhtom(fhp, v3);
2662 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
2663 nfsm_srvfillattr(vap, fp);
2664 }
2665 error = 0;
2666 /* fall through */
2667
2668nfsmout:
fad57d0e 2669 nlookup_done(&nd);
984263bc
MD
2670 if (dirp)
2671 vrele(dirp);
fad57d0e
MD
2672 if (vp)
2673 vput(vp);
984263bc
MD
2674 return (error);
2675}
2676
2677/*
2678 * nfs rmdir service
2679 */
2680int
e851b29e
CP
2681nfsrv_rmdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2682 struct thread *td, struct mbuf **mrq)
984263bc
MD
2683{
2684 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2685 struct sockaddr *nam = nfsd->nd_nam;
2686 caddr_t dpos = nfsd->nd_dpos;
2687 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2688 u_int32_t *tl;
2689 int32_t t1;
984263bc 2690 caddr_t bpos;
5df949e9 2691 int error = 0, cache = 0, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2692 int v3 = (nfsd->nd_flag & ND_NFSV3);
2693 char *cp2;
2694 struct mbuf *mb, *mreq;
fad57d0e
MD
2695 struct vnode *dirp;
2696 struct vnode *vp;
984263bc
MD
2697 struct vattr dirfor, diraft;
2698 nfsfh_t nfh;
2699 fhandle_t *fhp;
fad57d0e 2700 struct nlookupdata nd;
984263bc
MD
2701 u_quad_t frev;
2702
2703 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2704 nlookup_zero(&nd);
2705 dirp = NULL;
2706 vp = NULL;
984263bc
MD
2707
2708 fhp = &nfh.fh_generic;
2709 nfsm_srvmtofh(fhp);
2710 nfsm_srvnamesiz(len);
fad57d0e
MD
2711
2712 error = nfs_namei(&nd, cred, NAMEI_DELETE, NULL, &vp,
2713 fhp, len, slp, nam, &md, &dpos, &dirp,
2714 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2715 if (dirp) {
fad57d0e 2716 if (v3)
3b568787 2717 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2718 }
2719 if (error) {
2720 nfsm_reply(NFSX_WCCDATA(v3));
2721 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2722 error = 0;
2723 goto nfsmout;
2724 }
984263bc
MD
2725 if (vp->v_type != VDIR) {
2726 error = ENOTDIR;
2727 goto out;
2728 }
fad57d0e 2729
984263bc
MD
2730 /*
2731 * The root of a mounted filesystem cannot be deleted.
2732 */
2733 if (vp->v_flag & VROOT)
2734 error = EBUSY;
2735out:
2736 /*
2737 * Issue or abort op. Since SAVESTART is not set, path name
2738 * component is freed by the VOP after either.
2739 */
2740 if (!error) {
fad57d0e 2741#if 0
984263bc
MD
2742 nqsrv_getl(nd.ni_dvp, ND_WRITE);
2743 nqsrv_getl(vp, ND_WRITE);
fad57d0e
MD
2744#endif
2745 vput(vp);
2746 vp = NULL;
2747 error = VOP_NRMDIR(nd.nl_ncp, nd.nl_cred);
984263bc 2748 }
fad57d0e 2749 nlookup_done(&nd);
984263bc
MD
2750
2751 if (dirp)
3b568787 2752 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2753 nfsm_reply(NFSX_WCCDATA(v3));
2754 if (v3) {
2755 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2756 error = 0;
2757 }
2758 /* fall through */
2759
2760nfsmout:
fad57d0e 2761 nlookup_done(&nd);
984263bc
MD
2762 if (dirp)
2763 vrele(dirp);
fad57d0e
MD
2764 if (vp)
2765 vput(vp);
984263bc
MD
2766 return(error);
2767}
2768
2769/*
2770 * nfs readdir service
2771 * - mallocs what it thinks is enough to read
2772 * count rounded up to a multiple of NFS_DIRBLKSIZ <= NFS_MAXREADDIR
2773 * - calls VOP_READDIR()
2774 * - loops around building the reply
2775 * if the output generated exceeds count break out of loop
2776 * The nfsm_clget macro is used here so that the reply will be packed
2777 * tightly in mbuf clusters.
2778 * - it only knows that it has encountered eof when the VOP_READDIR()
2779 * reads nothing
2780 * - as such one readdir rpc will return eof false although you are there
2781 * and then the next will return eof
2782 * - it trims out records with d_fileno == 0
2783 * this doesn't matter for Unix clients, but they might confuse clients
2784 * for other os'.
2785 * NB: It is tempting to set eof to true if the VOP_READDIR() reads less
2786 * than requested, but this may not apply to all filesystems. For
2787 * example, client NFS does not { although it is never remote mounted
2788 * anyhow }
2789 * The alternate call nfsrv_readdirplus() does lookups as well.
2790 * PS: The NFS protocol spec. does not clarify what the "count" byte
2791 * argument is a count of.. just name strings and file id's or the
2792 * entire reply rpc or ...
2793 * I tried just file name and id sizes and it confused the Sun client,
2794 * so I am using the full rpc size now. The "paranoia.." comment refers
2795 * to including the status longwords that are not a part of the dir.
2796 * "entry" structures, but are in the rpc.
2797 */
2798struct flrep {
2799 nfsuint64 fl_off;
2800 u_int32_t fl_postopok;
2801 u_int32_t fl_fattr[NFSX_V3FATTR / sizeof (u_int32_t)];
2802 u_int32_t fl_fhok;
2803 u_int32_t fl_fhsize;
2804 u_int32_t fl_nfh[NFSX_V3FH / sizeof (u_int32_t)];
2805};
2806
2807int
e851b29e
CP
2808nfsrv_readdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2809 struct thread *td, struct mbuf **mrq)
984263bc
MD
2810{
2811 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2812 struct sockaddr *nam = nfsd->nd_nam;
2813 caddr_t dpos = nfsd->nd_dpos;
2814 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2815 char *bp, *be;
2816 struct mbuf *mp;
2817 struct dirent *dp;
2818 caddr_t cp;
2819 u_int32_t *tl;
2820 int32_t t1;
984263bc
MD
2821 caddr_t bpos;
2822 struct mbuf *mb, *mb2, *mreq, *mp2;
2823 char *cpos, *cend, *cp2, *rbuf;
2824 struct vnode *vp = NULL;
2825 struct vattr at;
2826 nfsfh_t nfh;
2827 fhandle_t *fhp;
2828 struct uio io;
2829 struct iovec iv;
2830 int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
2831 int siz, cnt, fullsiz, eofflag, rdonly, cache, ncookies;
2832 int v3 = (nfsd->nd_flag & ND_NFSV3);
2833 u_quad_t frev, off, toff, verf;
2834 u_long *cookies = NULL, *cookiep; /* needs to be int64_t or off_t */
2835
2836 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2837 fhp = &nfh.fh_generic;
2838 nfsm_srvmtofh(fhp);
2839 if (v3) {
2840 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2841 toff = fxdr_hyper(tl);
2842 tl += 2;
2843 verf = fxdr_hyper(tl);
2844 tl += 2;
2845 } else {
2846 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2847 toff = fxdr_unsigned(u_quad_t, *tl++);
2848 verf = 0; /* shut up gcc */
2849 }
2850 off = toff;
2851 cnt = fxdr_unsigned(int, *tl);
2852 siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
2853 xfer = NFS_SRVMAXDATA(nfsd);
2854 if (cnt > xfer)
2855 cnt = xfer;
2856 if (siz > xfer)
2857 siz = xfer;
2858 fullsiz = siz;
2859 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
2860 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
2861 if (!error && vp->v_type != VDIR) {
2862 error = ENOTDIR;
2863 vput(vp);
2864 vp = NULL;
2865 }
2866 if (error) {
2867 nfsm_reply(NFSX_UNSIGNED);
2868 nfsm_srvpostop_attr(getret, &at);
2869 error = 0;
2870 goto nfsmout;
2871 }
2872
2873 /*
2874 * Obtain lock on vnode for this section of the code
2875 */
2876
2877 nqsrv_getl(vp, ND_READ);
2878 if (v3) {
3b568787 2879 error = getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
2880#if 0
2881 /*
2882 * XXX This check may be too strict for Solaris 2.5 clients.
2883 */
2884 if (!error && toff && verf && verf != at.va_filerev)
2885 error = NFSERR_BAD_COOKIE;
2886#endif
2887 }
2888 if (!error)
dadab5e9 2889 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 0);
984263bc
MD
2890 if (error) {
2891 vput(vp);
2892 vp = NULL;
2893 nfsm_reply(NFSX_POSTOPATTR(v3));
2894 nfsm_srvpostop_attr(getret, &at);
2895 error = 0;
2896 goto nfsmout;
2897 }
5fd012e0 2898 VOP_UNLOCK(vp, 0, td);
984263bc
MD
2899
2900 /*
2901 * end section. Allocate rbuf and continue
2902 */
2903 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
2904again:
2905 iv.iov_base = rbuf;
2906 iv.iov_len = fullsiz;
2907 io.uio_iov = &iv;
2908 io.uio_iovcnt = 1;
2909 io.uio_offset = (off_t)off;
2910 io.uio_resid = fullsiz;
2911 io.uio_segflg = UIO_SYSSPACE;
2912 io.uio_rw = UIO_READ;
dadab5e9 2913 io.uio_td = NULL;
984263bc 2914 eofflag = 0;
5fd012e0 2915 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
984263bc
MD
2916 if (cookies) {
2917 free((caddr_t)cookies, M_TEMP);
2918 cookies = NULL;
2919 }
2920 error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
2921 off = (off_t)io.uio_offset;
2922 if (!cookies && !error)
2923 error = NFSERR_PERM;
2924 if (v3) {
3b568787 2925 getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
2926 if (!error)
2927 error = getret;
2928 }
5fd012e0 2929 VOP_UNLOCK(vp, 0, td);
984263bc
MD
2930 if (error) {
2931 vrele(vp);
2932 vp = NULL;
2933 free((caddr_t)rbuf, M_TEMP);
2934 if (cookies)
2935 free((caddr_t)cookies, M_TEMP);
2936 nfsm_reply(NFSX_POSTOPATTR(v3));
2937 nfsm_srvpostop_attr(getret, &at);
2938 error = 0;
2939 goto nfsmout;
2940 }
2941 if (io.uio_resid) {
2942 siz -= io.uio_resid;
2943
2944 /*
2945 * If nothing read, return eof
2946 * rpc reply
2947 */
2948 if (siz == 0) {
2949 vrele(vp);
2950 vp = NULL;
2951 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) +
2952 2 * NFSX_UNSIGNED);
2953 if (v3) {
2954 nfsm_srvpostop_attr(getret, &at);
2955 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2956 txdr_hyper(at.va_filerev, tl);
2957 tl += 2;
2958 } else
2959 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2960 *tl++ = nfs_false;
2961 *tl = nfs_true;
2962 FREE((caddr_t)rbuf, M_TEMP);
2963 FREE((caddr_t)cookies, M_TEMP);
2964 error = 0;
2965 goto nfsmout;
2966 }
2967 }
2968
2969 /*
2970 * Check for degenerate cases of nothing useful read.
2971 * If so go try again
2972 */
2973 cpos = rbuf;
2974 cend = rbuf + siz;
2975 dp = (struct dirent *)cpos;
2976 cookiep = cookies;
2977 /*
2978 * For some reason FreeBSD's ufs_readdir() chooses to back the
2979 * directory offset up to a block boundary, so it is necessary to
2980 * skip over the records that preceed the requested offset. This
2981 * requires the assumption that file offset cookies monotonically
2982 * increase.
2983 */
2984 while (cpos < cend && ncookies > 0 &&
2985 (dp->d_fileno == 0 || dp->d_type == DT_WHT ||
2986 ((u_quad_t)(*cookiep)) <= toff)) {
2987 cpos += dp->d_reclen;
2988 dp = (struct dirent *)cpos;
2989 cookiep++;
2990 ncookies--;
2991 }
2992 if (cpos >= cend || ncookies == 0) {
2993 toff = off;
2994 siz = fullsiz;
2995 goto again;
2996 }
2997
2998 len = 3 * NFSX_UNSIGNED; /* paranoia, probably can be 0 */
2999 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) + siz);
3000 if (v3) {
3001 nfsm_srvpostop_attr(getret, &at);
3002 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3003 txdr_hyper(at.va_filerev, tl);
3004 }
3005 mp = mp2 = mb;
3006 bp = bpos;
3007 be = bp + M_TRAILINGSPACE(mp);
3008
3009 /* Loop through the records and build reply */
3010 while (cpos < cend && ncookies > 0) {
3011 if (dp->d_fileno != 0 && dp->d_type != DT_WHT) {
3012 nlen = dp->d_namlen;
3013 rem = nfsm_rndup(nlen) - nlen;
3014 len += (4 * NFSX_UNSIGNED + nlen + rem);
3015 if (v3)
3016 len += 2 * NFSX_UNSIGNED;
3017 if (len > cnt) {
3018 eofflag = 0;
3019 break;
3020 }
3021 /*
3022 * Build the directory record xdr from
3023 * the dirent entry.
3024 */
3025 nfsm_clget;
3026 *tl = nfs_true;
3027 bp += NFSX_UNSIGNED;
3028 if (v3) {
3029 nfsm_clget;
3030 *tl = 0;
3031 bp += NFSX_UNSIGNED;
3032 }
3033 nfsm_clget;
3034 *tl = txdr_unsigned(dp->d_fileno);
3035 bp += NFSX_UNSIGNED;
3036 nfsm_clget;
3037 *tl = txdr_unsigned(nlen);
3038 bp += NFSX_UNSIGNED;
3039
3040 /* And loop around copying the name */
3041 xfer = nlen;
3042 cp = dp->d_name;
3043 while (xfer > 0) {
3044 nfsm_clget;
3045 if ((bp+xfer) > be)
3046 tsiz = be-bp;
3047 else
3048 tsiz = xfer;
3049 bcopy(cp, bp, tsiz);
3050 bp += tsiz;
3051 xfer -= tsiz;
3052 if (xfer > 0)
3053 cp += tsiz;
3054 }
3055 /* And null pad to a int32_t boundary */
3056 for (i = 0; i < rem; i++)
3057 *bp++ = '\0';
3058 nfsm_clget;
3059
3060 /* Finish off the record */
3061 if (v3) {
3062 *tl = 0;
3063 bp += NFSX_UNSIGNED;
3064 nfsm_clget;
3065 }
3066 *tl = txdr_unsigned(*cookiep);
3067 bp += NFSX_UNSIGNED;
3068 }
3069 cpos += dp->d_reclen;
3070 dp = (struct dirent *)cpos;
3071 cookiep++;
3072 ncookies--;
3073 }
3074 vrele(vp);
3075 vp = NULL;
3076 nfsm_clget;
3077 *tl = nfs_false;
3078 bp += NFSX_UNSIGNED;
3079 nfsm_clget;
3080 if (eofflag)
3081 *tl = nfs_true;
3082 else
3083 *tl = nfs_false;
3084 bp += NFSX_UNSIGNED;
3085 if (mp != mb) {
3086 if (bp < be)
3087 mp->m_len = bp - mtod(mp, caddr_t);
3088 } else
3089 mp->m_len += bp - bpos;
3090 FREE((caddr_t)rbuf, M_TEMP);
3091 FREE((caddr_t)cookies, M_TEMP);
3092
3093nfsmout:
3094 if (vp)
3095 vrele(vp);
3096 return(error);
3097}
3098
3099int
e851b29e
CP
3100nfsrv_readdirplus(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3101 struct thread *td, struct mbuf **mrq)
984263bc
MD
3102{
3103 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3104 struct sockaddr *nam = nfsd->nd_nam;
3105 caddr_t dpos = nfsd->nd_dpos;
3106 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3107 char *bp, *be;
3108 struct mbuf *mp;
3109 struct dirent *dp;
3110 caddr_t cp;
3111 u_int32_t *tl;
3112 int32_t t1;
984263bc
MD
3113 caddr_t bpos;
3114 struct mbuf *mb, *mb2, *mreq, *mp2;
3115 char *cpos, *cend, *cp2, *rbuf;
3116 struct vnode *vp = NULL, *nvp;
3117 struct flrep fl;
3118 nfsfh_t nfh;
3119 fhandle_t *fhp, *nfhp = (fhandle_t *)fl.fl_nfh;
3120 struct uio io;
3121 struct iovec iv;
3122 struct vattr va, at, *vap = &va;
3123 struct nfs_fattr *fp;
3124 int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
3125 int siz, cnt, fullsiz, eofflag, rdonly, cache, dirlen, ncookies;
3126 u_quad_t frev, off, toff, verf;
3127 u_long *cookies = NULL, *cookiep; /* needs to be int64_t or off_t */
3128
3129 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
3130 fhp = &nfh.fh_generic;
3131 nfsm_srvmtofh(fhp);
3132 nfsm_dissect(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
3133 toff = fxdr_hyper(tl);
3134 tl += 2;
3135 verf = fxdr_hyper(tl);
3136 tl += 2;
3137 siz = fxdr_unsigned(int, *tl++);
3138 cnt = fxdr_unsigned(int, *tl);
3139 off = toff;
3140 siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
3141 xfer = NFS_SRVMAXDATA(nfsd);
3142 if (cnt > xfer)
3143 cnt = xfer;
3144 if (siz > xfer)
3145 siz = xfer;
3146 fullsiz = siz;
3147 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3148 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3149 if (!error && vp->v_type != VDIR) {
3150 error = ENOTDIR;
3151 vput(vp);
3152 vp = NULL;
3153 }
3154 if (error) {
3155 nfsm_reply(NFSX_UNSIGNED);
3156 nfsm_srvpostop_attr(getret, &at);
3157 error = 0;
3158 goto nfsmout;
3159 }
3b568787 3160 error = getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
3161#if 0
3162 /*
3163 * XXX This check may be too strict for Solaris 2.5 clients.
3164 */
3165 if (!error && toff && verf && verf != at.va_filerev)
3166 error = NFSERR_BAD_COOKIE;
3167#endif
3168 if (!error) {
3169 nqsrv_getl(vp, ND_READ);
dadab5e9 3170 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 0);
984263bc
MD
3171 }
3172 if (error) {
3173 vput(vp);
3174 vp = NULL;
3175 nfsm_reply(NFSX_V3POSTOPATTR);
3176 nfsm_srvpostop_attr(getret, &at);
3177 error = 0;
3178 goto nfsmout;
3179 }
5fd012e0 3180 VOP_UNLOCK(vp, 0, td);
984263bc
MD
3181 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
3182again:
3183 iv.iov_base = rbuf;
3184 iv.iov_len = fullsiz;
3185 io.uio_iov = &iv;
3186 io.uio_iovcnt = 1;
3187 io.uio_offset = (off_t)off;
3188 io.uio_resid = fullsiz;
3189 io.uio_segflg = UIO_SYSSPACE;
3190 io.uio_rw = UIO_READ;
dadab5e9 3191 io.uio_td = NULL;
984263bc 3192 eofflag = 0;
5fd012e0 3193 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
984263bc
MD
3194 if (cookies) {
3195 free((caddr_t)cookies, M_TEMP);
3196 cookies = NULL;
3197 }
3198 error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
3199 off = (u_quad_t)io.uio_offset;
3b568787 3200 getret = VOP_GETATTR(vp, &at, td);
5fd012e0 3201 VOP_UNLOCK(vp, 0, td);
984263bc
MD
3202 if (!cookies && !error)
3203 error = NFSERR_PERM;
3204 if (!error)
3205 error = getret;
3206 if (error) {
3207 vrele(vp);
3208 vp = NULL;
3209 if (cookies)
3210 free((caddr_t)cookies, M_TEMP);
3211 free((caddr_t)rbuf, M_TEMP);
3212 nfsm_reply(NFSX_V3POSTOPATTR);
3213 nfsm_srvpostop_attr(getret, &at);
3214 error = 0;
3215 goto nfsmout;
3216 }
3217 if (io.uio_resid) {
3218 siz -= io.uio_resid;
3219
3220 /*
3221 * If nothing read, return eof
3222 * rpc reply
3223 */
3224 if (siz == 0) {
3225 vrele(vp);
3226 vp = NULL;
3227 nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF +
3228 2 * NFSX_UNSIGNED);
3229 nfsm_srvpostop_attr(getret, &at);
3230 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
3231 txdr_hyper(at.va_filerev, tl);
3232 tl += 2;
3233 *tl++ = nfs_false;
3234 *tl = nfs_true;
3235 FREE((caddr_t)cookies, M_TEMP);
3236 FREE((caddr_t)rbuf, M_TEMP);
3237 error = 0;
3238 goto nfsmout;
3239 }
3240 }
3241
3242 /*
3243 * Check for degenerate cases of nothing useful read.
3244 * If so go try again
3245 */
3246 cpos = rbuf;
3247 cend = rbuf + siz;
3248 dp = (struct dirent *)cpos;
3249 cookiep = cookies;
3250 /*
3251 * For some reason FreeBSD's ufs_readdir() chooses to back the
3252 * directory offset up to a block boundary, so it is necessary to
3253 * skip over the records that preceed the requested offset. This
3254 * requires the assumption that file offset cookies monotonically
3255 * increase.
3256 */
3257 while (cpos < cend && ncookies > 0 &&
3258 (dp->d_fileno == 0 || dp->d_type == DT_WHT ||
3259 ((u_quad_t)(*cookiep)) <= toff)) {
3260 cpos += dp->d_reclen;
3261 dp = (struct dirent *)cpos;
3262 cookiep++;
3263 ncookies--;
3264 }
3265 if (cpos >= cend || ncookies == 0) {
3266 toff = off;
3267 siz = fullsiz;
3268 goto again;
3269 }
3270
3271 /*
3272 * Probe one of the directory entries to see if the filesystem
3273 * supports VGET.
3274 */
3275 if (VFS_VGET(vp->v_mount, dp->d_fileno, &nvp) == EOPNOTSUPP) {
3276 error = NFSERR_NOTSUPP;
3277 vrele(vp);
3278 vp = NULL;
3279 free((caddr_t)cookies, M_TEMP);
3280 free((caddr_t)rbuf, M_TEMP);
3281 nfsm_reply(NFSX_V3POSTOPATTR);
3282 nfsm_srvpostop_attr(getret, &at);
3283 error = 0;
3284 goto nfsmout;
3285 }
3187253f
MD
3286 if (nvp) {
3287 vput(nvp);
3288 nvp = NULL;
3289 }
984263bc
MD
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);
37