Remove VOP_GETVOBJECT, VOP_DESTROYVOBJECT, and VOP_CREATEVOBJECT. Rearrange
[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 $
7540ab49 38 * $DragonFly: src/sys/vfs/nfs/nfs_serv.c,v 1.31 2006/03/29 18:45:00 dillon Exp $
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MD
39 */
40
41/*
42 * nfs version 2 and 3 server calls to vnode ops
43 * - these routines generally have 3 phases
44 * 1 - break down and validate rpc request in mbuf list
45 * 2 - do the vnode ops for the request
46 * (surprisingly ?? many are very similar to syscalls in vfs_syscalls.c)
47 * 3 - build the rpc reply in an mbuf list
48 * nb:
49 * - do not mix the phases, since the nfsm_?? macros can return failures
50 * on a bad rpc or similar and do not do any vrele() or vput()'s
51 *
52 * - the nfsm_reply() macro generates an nfs rpc reply with the nfs
53 * error number iff error != 0 whereas
54 * returning an error from the server function implies a fatal error
55 * such as a badly constructed rpc request that should be dropped without
56 * a reply.
57 * For Version 3, nfsm_reply() does not return for the error case, since
58 * most version 3 rpcs return more than the status for error cases.
59 *
60 * Other notes:
61 * Warning: always pay careful attention to resource cleanup on return
62 * and note that nfsm_*() macros can terminate a procedure on certain
63 * errors.
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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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MD
89#include <sys/buf2.h>
90
165dba55
DR
91#include <sys/thread2.h>
92
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MD
93#include "nfsproto.h"
94#include "rpcv2.h"
95#include "nfs.h"
96#include "xdr_subs.h"
97#include "nfsm_subs.h"
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98
99#ifdef NFSRV_DEBUG
100#define nfsdbprintf(info) printf info
101#else
102#define nfsdbprintf(info)
103#endif
104
105#define MAX_COMMIT_COUNT (1024 * 1024)
106
053a4ed4 107#define NUM_HEURISTIC 1017
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108#define NHUSE_INIT 64
109#define NHUSE_INC 16
110#define NHUSE_MAX 2048
111
112static struct nfsheur {
113 struct vnode *nh_vp; /* vp to match (unreferenced pointer) */
114 off_t nh_nextr; /* next offset for sequential detection */
115 int nh_use; /* use count for selection */
116 int nh_seqcount; /* heuristic */
117} nfsheur[NUM_HEURISTIC];
118
119nfstype nfsv3_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK,
120 NFFIFO, NFNON };
121#ifndef NFS_NOSERVER
122nfstype nfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON,
123 NFCHR, NFNON };
124/* Global vars */
125extern u_int32_t nfs_xdrneg1;
126extern u_int32_t nfs_false, nfs_true;
127extern enum vtype nv3tov_type[8];
128extern struct nfsstats nfsstats;
129
130int nfsrvw_procrastinate = NFS_GATHERDELAY * 1000;
131int nfsrvw_procrastinate_v3 = 0;
132
3a6f9faf 133static struct timespec nfsver;
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134
135SYSCTL_DECL(_vfs_nfs);
136
137static int nfs_async;
138SYSCTL_INT(_vfs_nfs, OID_AUTO, async, CTLFLAG_RW, &nfs_async, 0, "");
139static int nfs_commit_blks;
140static int nfs_commit_miss;
141SYSCTL_INT(_vfs_nfs, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 0, "");
142SYSCTL_INT(_vfs_nfs, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 0, "");
143
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144static int nfsrv_access (struct vnode *,int,struct ucred *,int,
145 struct thread *, int);
146static void nfsrvw_coalesce (struct nfsrv_descript *,
147 struct nfsrv_descript *);
984263bc 148
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149/*
150 * nfs v3 access service
151 */
152int
dadab5e9 153nfsrv3_access(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
e851b29e 154 struct thread *td, struct mbuf **mrq)
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155{
156 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
157 struct sockaddr *nam = nfsd->nd_nam;
158 caddr_t dpos = nfsd->nd_dpos;
159 struct ucred *cred = &nfsd->nd_cr;
160 struct vnode *vp = NULL;
161 nfsfh_t nfh;
162 fhandle_t *fhp;
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163 u_int32_t *tl;
164 int32_t t1;
984263bc 165 caddr_t bpos;
e07fef60 166 int error = 0, rdonly, getret;
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167 char *cp2;
168 struct mbuf *mb, *mreq, *mb2;
169 struct vattr vattr, *vap = &vattr;
170 u_long testmode, nfsmode;
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171
172 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
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173 fhp = &nfh.fh_generic;
174 nfsm_srvmtofh(fhp);
175 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
176 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly,
177 (nfsd->nd_flag & ND_KERBAUTH), TRUE);
178 if (error) {
179 nfsm_reply(NFSX_UNSIGNED);
180 nfsm_srvpostop_attr(1, (struct vattr *)0);
181 error = 0;
182 goto nfsmout;
183 }
184 nfsmode = fxdr_unsigned(u_int32_t, *tl);
185 if ((nfsmode & NFSV3ACCESS_READ) &&
dadab5e9 186 nfsrv_access(vp, VREAD, cred, rdonly, td, 0))
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187 nfsmode &= ~NFSV3ACCESS_READ;
188 if (vp->v_type == VDIR)
189 testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND |
190 NFSV3ACCESS_DELETE);
191 else
192 testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND);
193 if ((nfsmode & testmode) &&
dadab5e9 194 nfsrv_access(vp, VWRITE, cred, rdonly, td, 0))
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195 nfsmode &= ~testmode;
196 if (vp->v_type == VDIR)
197 testmode = NFSV3ACCESS_LOOKUP;
198 else
199 testmode = NFSV3ACCESS_EXECUTE;
200 if ((nfsmode & testmode) &&
dadab5e9 201 nfsrv_access(vp, VEXEC, cred, rdonly, td, 0))
984263bc 202 nfsmode &= ~testmode;
3b568787 203 getret = VOP_GETATTR(vp, vap, td);
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204 vput(vp);
205 vp = NULL;
206 nfsm_reply(NFSX_POSTOPATTR(1) + NFSX_UNSIGNED);
207 nfsm_srvpostop_attr(getret, vap);
208 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
209 *tl = txdr_unsigned(nfsmode);
210nfsmout:
211 if (vp)
212 vput(vp);
213 return(error);
214}
215
216/*
217 * nfs getattr service
218 */
219int
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220nfsrv_getattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
221 struct thread *td, struct mbuf **mrq)
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222{
223 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
224 struct sockaddr *nam = nfsd->nd_nam;
225 caddr_t dpos = nfsd->nd_dpos;
226 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 227 struct nfs_fattr *fp;
984263bc 228 struct vattr va;
dadab5e9 229 struct vattr *vap = &va;
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230 struct vnode *vp = NULL;
231 nfsfh_t nfh;
232 fhandle_t *fhp;
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MD
233 u_int32_t *tl;
234 int32_t t1;
984263bc 235 caddr_t bpos;
e07fef60 236 int error = 0, rdonly;
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237 char *cp2;
238 struct mbuf *mb, *mb2, *mreq;
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239
240 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
241 fhp = &nfh.fh_generic;
242 nfsm_srvmtofh(fhp);
243 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
244 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
245 if (error) {
246 nfsm_reply(0);
247 error = 0;
248 goto nfsmout;
249 }
3b568787 250 error = VOP_GETATTR(vp, vap, td);
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251 vput(vp);
252 vp = NULL;
253 nfsm_reply(NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
254 if (error) {
255 error = 0;
256 goto nfsmout;
257 }
258 nfsm_build(fp, struct nfs_fattr *, NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
259 nfsm_srvfillattr(vap, fp);
260 /* fall through */
261
262nfsmout:
263 if (vp)
264 vput(vp);
265 return(error);
266}
267
268/*
269 * nfs setattr service
270 */
271int
e851b29e
CP
272nfsrv_setattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
273 struct thread *td, struct mbuf **mrq)
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274{
275 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
276 struct sockaddr *nam = nfsd->nd_nam;
277 caddr_t dpos = nfsd->nd_dpos;
278 struct ucred *cred = &nfsd->nd_cr;
279 struct vattr va, preat;
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MD
280 struct vattr *vap = &va;
281 struct nfsv2_sattr *sp;
282 struct nfs_fattr *fp;
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283 struct vnode *vp = NULL;
284 nfsfh_t nfh;
285 fhandle_t *fhp;
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MD
286 u_int32_t *tl;
287 int32_t t1;
984263bc 288 caddr_t bpos;
e07fef60 289 int error = 0, rdonly, preat_ret = 1, postat_ret = 1;
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MD
290 int v3 = (nfsd->nd_flag & ND_NFSV3), gcheck = 0;
291 char *cp2;
292 struct mbuf *mb, *mb2, *mreq;
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293 struct timespec guard;
294
295 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
296 fhp = &nfh.fh_generic;
297 nfsm_srvmtofh(fhp);
298 VATTR_NULL(vap);
299 if (v3) {
300 nfsm_srvsattr(vap);
301 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
302 gcheck = fxdr_unsigned(int, *tl);
303 if (gcheck) {
304 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
305 fxdr_nfsv3time(tl, &guard);
306 }
307 } else {
308 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
309 /*
310 * Nah nah nah nah na nah
311 * There is a bug in the Sun client that puts 0xffff in the mode
312 * field of sattr when it should put in 0xffffffff. The u_short
313 * doesn't sign extend.
314 * --> check the low order 2 bytes for 0xffff
315 */
316 if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff)
317 vap->va_mode = nfstov_mode(sp->sa_mode);
318 if (sp->sa_uid != nfs_xdrneg1)
319 vap->va_uid = fxdr_unsigned(uid_t, sp->sa_uid);
320 if (sp->sa_gid != nfs_xdrneg1)
321 vap->va_gid = fxdr_unsigned(gid_t, sp->sa_gid);
322 if (sp->sa_size != nfs_xdrneg1)
323 vap->va_size = fxdr_unsigned(u_quad_t, sp->sa_size);
324 if (sp->sa_atime.nfsv2_sec != nfs_xdrneg1) {
325#ifdef notyet
326 fxdr_nfsv2time(&sp->sa_atime, &vap->va_atime);
327#else
328 vap->va_atime.tv_sec =
329 fxdr_unsigned(int32_t, sp->sa_atime.nfsv2_sec);
330 vap->va_atime.tv_nsec = 0;
331#endif
332 }
333 if (sp->sa_mtime.nfsv2_sec != nfs_xdrneg1)
334 fxdr_nfsv2time(&sp->sa_mtime, &vap->va_mtime);
335
336 }
337
338 /*
339 * Now that we have all the fields, lets do it.
340 */
341 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly,
342 (nfsd->nd_flag & ND_KERBAUTH), TRUE);
343 if (error) {
344 nfsm_reply(2 * NFSX_UNSIGNED);
345 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
346 error = 0;
347 goto nfsmout;
348 }
349
350 /*
351 * vp now an active resource, pay careful attention to cleanup
352 */
353
984263bc 354 if (v3) {
3b568787 355 error = preat_ret = VOP_GETATTR(vp, &preat, td);
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MD
356 if (!error && gcheck &&
357 (preat.va_ctime.tv_sec != guard.tv_sec ||
358 preat.va_ctime.tv_nsec != guard.tv_nsec))
359 error = NFSERR_NOT_SYNC;
360 if (error) {
361 vput(vp);
362 vp = NULL;
363 nfsm_reply(NFSX_WCCDATA(v3));
364 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
365 error = 0;
366 goto nfsmout;
367 }
368 }
369
370 /*
371 * If the size is being changed write acces is required, otherwise
372 * just check for a read only file system.
373 */
374 if (vap->va_size == ((u_quad_t)((quad_t) -1))) {
375 if (rdonly || (vp->v_mount->mnt_flag & MNT_RDONLY)) {
376 error = EROFS;
377 goto out;
378 }
379 } else {
380 if (vp->v_type == VDIR) {
381 error = EISDIR;
382 goto out;
383 } else if ((error = nfsrv_access(vp, VWRITE, cred, rdonly,
dadab5e9 384 td, 0)) != 0){
984263bc 385 goto out;
dadab5e9 386 }
984263bc 387 }
dadab5e9 388 error = VOP_SETATTR(vp, vap, cred, td);
3b568787 389 postat_ret = VOP_GETATTR(vp, vap, td);
984263bc
MD
390 if (!error)
391 error = postat_ret;
392out:
393 vput(vp);
394 vp = NULL;
395 nfsm_reply(NFSX_WCCORFATTR(v3));
396 if (v3) {
397 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
398 error = 0;
399 goto nfsmout;
400 } else {
401 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
402 nfsm_srvfillattr(vap, fp);
403 }
404 /* fall through */
405
406nfsmout:
407 if (vp)
408 vput(vp);
409 return(error);
410}
411
412/*
413 * nfs lookup rpc
414 */
415int
e851b29e
CP
416nfsrv_lookup(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
417 struct thread *td, struct mbuf **mrq)
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MD
418{
419 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
420 struct sockaddr *nam = nfsd->nd_nam;
421 caddr_t dpos = nfsd->nd_dpos;
422 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 423 struct nfs_fattr *fp;
fad57d0e
MD
424 struct nlookupdata nd;
425 struct vnode *vp;
426 struct vnode *dirp;
427 struct namecache *ncp;
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428 nfsfh_t nfh;
429 fhandle_t *fhp;
dadab5e9
MD
430 caddr_t cp;
431 u_int32_t *tl;
432 int32_t t1;
984263bc 433 caddr_t bpos;
e07fef60 434 int error = 0, len, dirattr_ret = 1;
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MD
435 int v3 = (nfsd->nd_flag & ND_NFSV3), pubflag;
436 char *cp2;
437 struct mbuf *mb, *mb2, *mreq;
438 struct vattr va, dirattr, *vap = &va;
984263bc
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439
440 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
441 nlookup_zero(&nd);
442 dirp = NULL;
443 vp = NULL;
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444
445 fhp = &nfh.fh_generic;
446 nfsm_srvmtofh(fhp);
447 nfsm_srvnamesiz(len);
448
449 pubflag = nfs_ispublicfh(fhp);
450
fad57d0e
MD
451 error = nfs_namei(&nd, cred, NAMEI_LOOKUP, NULL, &vp,
452 fhp, len, slp, nam, &md, &dpos,
dadab5e9 453 &dirp, td, (nfsd->nd_flag & ND_KERBAUTH), pubflag);
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454
455 /*
456 * namei failure, only dirp to cleanup. Clear out garbarge from
457 * structure in case macros jump to nfsmout.
458 */
459
460 if (error) {
461 if (dirp) {
462 if (v3)
3b568787 463 dirattr_ret = VOP_GETATTR(dirp, &dirattr, td);
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MD
464 vrele(dirp);
465 dirp = NULL;
466 }
467 nfsm_reply(NFSX_POSTOPATTR(v3));
468 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
469 error = 0;
470 goto nfsmout;
471 }
472
473 /*
474 * Locate index file for public filehandle
475 *
476 * error is 0 on entry and 0 on exit from this block.
477 */
478
479 if (pubflag) {
fad57d0e 480 if (vp->v_type == VDIR && nfs_pub.np_index != NULL) {
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MD
481 /*
482 * Setup call to lookup() to see if we can find
483 * the index file. Arguably, this doesn't belong
484 * in a kernel.. Ugh. If an error occurs, do not
485 * try to install an index file and then clear the
486 * error.
487 *
488 * When we replace nd with ind and redirect ndp,
489 * maintenance of ni_startdir and ni_vp shift to
490 * ind and we have to clean them up in the old nd.
491 * However, the cnd resource continues to be maintained
492 * via the original nd. Confused? You aren't alone!
493 */
fad57d0e
MD
494 VOP_UNLOCK(vp, 0, td);
495 ncp = cache_hold(nd.nl_ncp);
496 nlookup_done(&nd);
497 error = nlookup_init_raw(&nd, nfs_pub.np_index,
498 UIO_SYSSPACE, 0, cred, ncp);
499 cache_drop(ncp);
500 if (error == 0)
501 error = nlookup(&nd);
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502
503 if (error == 0) {
504 /*
505 * Found an index file. Get rid of
fad57d0e
MD
506 * the old references. transfer vp and
507 * load up the new vp. Fortunately we do
508 * not have to deal with dvp, that would be
509 * a huge mess.
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MD
510 */
511 if (dirp)
512 vrele(dirp);
fad57d0e
MD
513 dirp = vp;
514 vp = NULL;
515 error = cache_vget(nd.nl_ncp, nd.nl_cred,
516 LK_EXCLUSIVE, &vp);
517 KKASSERT(error == 0);
984263bc
MD
518 }
519 error = 0;
520 }
521 /*
522 * If the public filehandle was used, check that this lookup
523 * didn't result in a filehandle outside the publicly exported
524 * filesystem. We clear the poor vp here to avoid lockups due
525 * to NFS I/O.
526 */
527
fad57d0e
MD
528 if (vp->v_mount != nfs_pub.np_mount) {
529 vput(vp);
530 vp = NULL;
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531 error = EPERM;
532 }
533 }
534
535 if (dirp) {
536 if (v3)
3b568787 537 dirattr_ret = VOP_GETATTR(dirp, &dirattr, td);
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MD
538 vrele(dirp);
539 dirp = NULL;
540 }
541
542 /*
543 * Resources at this point:
544 * ndp->ni_vp may not be NULL
545 *
546 */
547
548 if (error) {
549 nfsm_reply(NFSX_POSTOPATTR(v3));
550 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
551 error = 0;
552 goto nfsmout;
553 }
554
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MD
555 /*
556 * Clear out some resources prior to potentially blocking. This
557 * is not as critical as ni_dvp resources in other routines, but
558 * it helps.
559 */
fad57d0e 560 nlookup_done(&nd);
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561
562 /*
563 * Get underlying attribute, then release remaining resources ( for
564 * the same potential blocking reason ) and reply.
565 */
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566 bzero((caddr_t)fhp, sizeof(nfh));
567 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
568 error = VFS_VPTOFH(vp, &fhp->fh_fid);
569 if (!error)
3b568787 570 error = VOP_GETATTR(vp, vap, td);
984263bc
MD
571
572 vput(vp);
fad57d0e 573 vp = NULL;
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MD
574 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPORFATTR(v3) + NFSX_POSTOPATTR(v3));
575 if (error) {
576 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
577 error = 0;
578 goto nfsmout;
579 }
580 nfsm_srvfhtom(fhp, v3);
581 if (v3) {
582 nfsm_srvpostop_attr(0, vap);
583 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
584 } else {
585 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
586 nfsm_srvfillattr(vap, fp);
587 }
588
589nfsmout:
590 if (dirp)
591 vrele(dirp);
fad57d0e
MD
592 nlookup_done(&nd); /* may be called twice */
593 if (vp)
594 vput(vp);
984263bc
MD
595 return (error);
596}
597
598/*
599 * nfs readlink service
600 */
601int
e851b29e
CP
602nfsrv_readlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
603 struct thread *td, struct mbuf **mrq)
984263bc
MD
604{
605 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
606 struct sockaddr *nam = nfsd->nd_nam;
607 caddr_t dpos = nfsd->nd_dpos;
608 struct ucred *cred = &nfsd->nd_cr;
609 struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN];
dadab5e9
MD
610 struct iovec *ivp = iv;
611 struct mbuf *mp;
612 u_int32_t *tl;
613 int32_t t1;
984263bc 614 caddr_t bpos;
e07fef60 615 int error = 0, rdonly, i, tlen, len, getret;
984263bc
MD
616 int v3 = (nfsd->nd_flag & ND_NFSV3);
617 char *cp2;
618 struct mbuf *mb, *mb2, *mp2, *mp3, *mreq;
619 struct vnode *vp = NULL;
620 struct vattr attr;
621 nfsfh_t nfh;
622 fhandle_t *fhp;
623 struct uio io, *uiop = &io;
984263bc
MD
624
625 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
626#ifndef nolint
627 mp2 = (struct mbuf *)0;
628#endif
629 mp3 = NULL;
630 fhp = &nfh.fh_generic;
631 nfsm_srvmtofh(fhp);
632 len = 0;
633 i = 0;
634 while (len < NFS_MAXPATHLEN) {
50503f0f
JH
635 mp = m_getcl(MB_WAIT, MT_DATA, 0);
636 mp->m_len = MCLBYTES;
984263bc
MD
637 if (len == 0)
638 mp3 = mp2 = mp;
639 else {
640 mp2->m_next = mp;
641 mp2 = mp;
642 }
643 if ((len+mp->m_len) > NFS_MAXPATHLEN) {
644 mp->m_len = NFS_MAXPATHLEN-len;
645 len = NFS_MAXPATHLEN;
646 } else
647 len += mp->m_len;
648 ivp->iov_base = mtod(mp, caddr_t);
649 ivp->iov_len = mp->m_len;
650 i++;
651 ivp++;
652 }
653 uiop->uio_iov = iv;
654 uiop->uio_iovcnt = i;
655 uiop->uio_offset = 0;
656 uiop->uio_resid = len;
657 uiop->uio_rw = UIO_READ;
658 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 659 uiop->uio_td = NULL;
984263bc
MD
660 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
661 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
662 if (error) {
663 nfsm_reply(2 * NFSX_UNSIGNED);
664 nfsm_srvpostop_attr(1, (struct vattr *)0);
665 error = 0;
666 goto nfsmout;
667 }
668 if (vp->v_type != VLNK) {
669 if (v3)
670 error = EINVAL;
671 else
672 error = ENXIO;
673 goto out;
674 }
984263bc
MD
675 error = VOP_READLINK(vp, uiop, cred);
676out:
3b568787 677 getret = VOP_GETATTR(vp, &attr, td);
984263bc
MD
678 vput(vp);
679 vp = NULL;
680 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_UNSIGNED);
681 if (v3) {
682 nfsm_srvpostop_attr(getret, &attr);
683 if (error) {
684 error = 0;
685 goto nfsmout;
686 }
687 }
688 if (uiop->uio_resid > 0) {
689 len -= uiop->uio_resid;
690 tlen = nfsm_rndup(len);
691 nfsm_adj(mp3, NFS_MAXPATHLEN-tlen, tlen-len);
692 }
693 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
694 *tl = txdr_unsigned(len);
695 mb->m_next = mp3;
696 mp3 = NULL;
697nfsmout:
698 if (mp3)
699 m_freem(mp3);
700 if (vp)
701 vput(vp);
702 return(error);
703}
704
705/*
706 * nfs read service
707 */
708int
e851b29e
CP
709nfsrv_read(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
710 struct thread *td, struct mbuf **mrq)
984263bc
MD
711{
712 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
713 struct sockaddr *nam = nfsd->nd_nam;
714 caddr_t dpos = nfsd->nd_dpos;
715 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 716 struct iovec *iv;
984263bc 717 struct iovec *iv2;
dadab5e9
MD
718 struct mbuf *m;
719 struct nfs_fattr *fp;
720 u_int32_t *tl;
721 int32_t t1;
722 int i;
984263bc 723 caddr_t bpos;
e07fef60 724 int error = 0, rdonly, cnt, len, left, siz, tlen, getret;
984263bc
MD
725 int v3 = (nfsd->nd_flag & ND_NFSV3), reqlen;
726 char *cp2;
727 struct mbuf *mb, *mb2, *mreq;
728 struct mbuf *m2;
729 struct vnode *vp = NULL;
730 nfsfh_t nfh;
731 fhandle_t *fhp;
732 struct uio io, *uiop = &io;
733 struct vattr va, *vap = &va;
734 struct nfsheur *nh;
735 off_t off;
736 int ioflag = 0;
984263bc
MD
737
738 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
739 fhp = &nfh.fh_generic;
740 nfsm_srvmtofh(fhp);
741 if (v3) {
742 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
743 off = fxdr_hyper(tl);
744 } else {
745 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
746 off = (off_t)fxdr_unsigned(u_int32_t, *tl);
747 }
748 nfsm_srvstrsiz(reqlen, NFS_SRVMAXDATA(nfsd));
749
750 /*
751 * Reference vp. If an error occurs, vp will be invalid, but we
752 * have to NULL it just in case. The macros might goto nfsmout
753 * as well.
754 */
755
756 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
757 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
758 if (error) {
759 vp = NULL;
760 nfsm_reply(2 * NFSX_UNSIGNED);
761 nfsm_srvpostop_attr(1, (struct vattr *)0);
762 error = 0;
763 goto nfsmout;
764 }
765
766 if (vp->v_type != VREG) {
767 if (v3)
768 error = EINVAL;
769 else
770 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
771 }
772 if (!error) {
dadab5e9
MD
773 if ((error = nfsrv_access(vp, VREAD, cred, rdonly, td, 1)) != 0)
774 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 1);
984263bc 775 }
3b568787 776 getret = VOP_GETATTR(vp, vap, td);
984263bc
MD
777 if (!error)
778 error = getret;
779 if (error) {
780 vput(vp);
781 vp = NULL;
782 nfsm_reply(NFSX_POSTOPATTR(v3));
783 nfsm_srvpostop_attr(getret, vap);
784 error = 0;
785 goto nfsmout;
786 }
787
788 /*
789 * Calculate byte count to read
790 */
791
792 if (off >= vap->va_size)
793 cnt = 0;
794 else if ((off + reqlen) > vap->va_size)
795 cnt = vap->va_size - off;
796 else
797 cnt = reqlen;
798
799 /*
800 * Calculate seqcount for heuristic
801 */
802
803 {
804 int hi;
053a4ed4 805 int try = 32;
984263bc
MD
806
807 /*
808 * Locate best candidate
809 */
810
053a4ed4 811 hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC;
984263bc
MD
812 nh = &nfsheur[hi];
813
814 while (try--) {
815 if (nfsheur[hi].nh_vp == vp) {
816 nh = &nfsheur[hi];
817 break;
818 }
819 if (nfsheur[hi].nh_use > 0)
820 --nfsheur[hi].nh_use;
053a4ed4 821 hi = (hi + 1) % NUM_HEURISTIC;
984263bc
MD
822 if (nfsheur[hi].nh_use < nh->nh_use)
823 nh = &nfsheur[hi];
824 }
825
826 if (nh->nh_vp != vp) {
827 nh->nh_vp = vp;
828 nh->nh_nextr = off;
829 nh->nh_use = NHUSE_INIT;
830 if (off == 0)
831 nh->nh_seqcount = 4;
832 else
833 nh->nh_seqcount = 1;
834 }
835
836 /*
837 * Calculate heuristic
838 */
839
840 if ((off == 0 && nh->nh_seqcount > 0) || off == nh->nh_nextr) {
841 if (++nh->nh_seqcount > IO_SEQMAX)
842 nh->nh_seqcount = IO_SEQMAX;
843 } else if (nh->nh_seqcount > 1) {
844 nh->nh_seqcount = 1;
845 } else {
846 nh->nh_seqcount = 0;
847 }
848 nh->nh_use += NHUSE_INC;
849 if (nh->nh_use > NHUSE_MAX)
850 nh->nh_use = NHUSE_MAX;
851 ioflag |= nh->nh_seqcount << IO_SEQSHIFT;
852 }
853
854 nfsm_reply(NFSX_POSTOPORFATTR(v3) + 3 * NFSX_UNSIGNED+nfsm_rndup(cnt));
855 if (v3) {
856 nfsm_build(tl, u_int32_t *, NFSX_V3FATTR + 4 * NFSX_UNSIGNED);
857 *tl++ = nfs_true;
858 fp = (struct nfs_fattr *)tl;
859 tl += (NFSX_V3FATTR / sizeof (u_int32_t));
860 } else {
861 nfsm_build(tl, u_int32_t *, NFSX_V2FATTR + NFSX_UNSIGNED);
862 fp = (struct nfs_fattr *)tl;
863 tl += (NFSX_V2FATTR / sizeof (u_int32_t));
864 }
865 len = left = nfsm_rndup(cnt);
866 if (cnt > 0) {
867 /*
868 * Generate the mbuf list with the uio_iov ref. to it.
869 */
870 i = 0;
871 m = m2 = mb;
872 while (left > 0) {
873 siz = min(M_TRAILINGSPACE(m), left);
874 if (siz > 0) {
875 left -= siz;
876 i++;
877 }
878 if (left > 0) {
50503f0f 879 m = m_getcl(MB_WAIT, MT_DATA, 0);
984263bc
MD
880 m->m_len = 0;
881 m2->m_next = m;
882 m2 = m;
883 }
884 }
885 MALLOC(iv, struct iovec *, i * sizeof (struct iovec),
886 M_TEMP, M_WAITOK);
887 uiop->uio_iov = iv2 = iv;
888 m = mb;
889 left = len;
890 i = 0;
891 while (left > 0) {
892 if (m == NULL)
893 panic("nfsrv_read iov");
894 siz = min(M_TRAILINGSPACE(m), left);
895 if (siz > 0) {
896 iv->iov_base = mtod(m, caddr_t) + m->m_len;
897 iv->iov_len = siz;
898 m->m_len += siz;
899 left -= siz;
900 iv++;
901 i++;
902 }
903 m = m->m_next;
904 }
905 uiop->uio_iovcnt = i;
906 uiop->uio_offset = off;
907 uiop->uio_resid = len;
908 uiop->uio_rw = UIO_READ;
909 uiop->uio_segflg = UIO_SYSSPACE;
910 error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred);
911 off = uiop->uio_offset;
912 nh->nh_nextr = off;
913 FREE((caddr_t)iv2, M_TEMP);
3b568787 914 if (error || (getret = VOP_GETATTR(vp, vap, td))) {
984263bc
MD
915 if (!error)
916 error = getret;
917 m_freem(mreq);
918 vput(vp);
919 vp = NULL;
920 nfsm_reply(NFSX_POSTOPATTR(v3));
921 nfsm_srvpostop_attr(getret, vap);
922 error = 0;
923 goto nfsmout;
924 }
925 } else {
926 uiop->uio_resid = 0;
927 }
928 vput(vp);
929 vp = NULL;
930 nfsm_srvfillattr(vap, fp);
931 tlen = len - uiop->uio_resid;
932 cnt = cnt < tlen ? cnt : tlen;
933 tlen = nfsm_rndup(cnt);
934 if (len != tlen || tlen != cnt)
935 nfsm_adj(mb, len - tlen, tlen - cnt);
936 if (v3) {
937 *tl++ = txdr_unsigned(cnt);
938 if (len < reqlen)
939 *tl++ = nfs_true;
940 else
941 *tl++ = nfs_false;
942 }
943 *tl = txdr_unsigned(cnt);
944nfsmout:
945 if (vp)
946 vput(vp);
947 return(error);
948}
949
950/*
951 * nfs write service
952 */
953int
e851b29e
CP
954nfsrv_write(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
955 struct thread *td, struct mbuf **mrq)
984263bc
MD
956{
957 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
958 struct sockaddr *nam = nfsd->nd_nam;
959 caddr_t dpos = nfsd->nd_dpos;
960 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
961 struct iovec *ivp;
962 int i, cnt;
963 struct mbuf *mp;
964 struct nfs_fattr *fp;
984263bc
MD
965 struct iovec *iv;
966 struct vattr va, forat;
dadab5e9
MD
967 struct vattr *vap = &va;
968 u_int32_t *tl;
969 int32_t t1;
984263bc 970 caddr_t bpos;
e07fef60 971 int error = 0, rdonly, len, forat_ret = 1;
984263bc
MD
972 int ioflags, aftat_ret = 1, retlen, zeroing, adjust;
973 int stable = NFSV3WRITE_FILESYNC;
974 int v3 = (nfsd->nd_flag & ND_NFSV3);
975 char *cp2;
976 struct mbuf *mb, *mb2, *mreq;
977 struct vnode *vp = NULL;
978 nfsfh_t nfh;
979 fhandle_t *fhp;
980 struct uio io, *uiop = &io;
981 off_t off;
984263bc
MD
982
983 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
984 if (mrep == NULL) {
985 *mrq = NULL;
986 error = 0;
987 goto nfsmout;
988 }
989 fhp = &nfh.fh_generic;
990 nfsm_srvmtofh(fhp);
991 if (v3) {
992 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
993 off = fxdr_hyper(tl);
994 tl += 3;
995 stable = fxdr_unsigned(int, *tl++);
996 } else {
997 nfsm_dissect(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
998 off = (off_t)fxdr_unsigned(u_int32_t, *++tl);
999 tl += 2;
1000 if (nfs_async)
1001 stable = NFSV3WRITE_UNSTABLE;
1002 }
1003 retlen = len = fxdr_unsigned(int32_t, *tl);
1004 cnt = i = 0;
1005
1006 /*
1007 * For NFS Version 2, it is not obvious what a write of zero length
1008 * should do, but I might as well be consistent with Version 3,
1009 * which is to return ok so long as there are no permission problems.
1010 */
1011 if (len > 0) {
1012 zeroing = 1;
1013 mp = mrep;
1014 while (mp) {
1015 if (mp == md) {
1016 zeroing = 0;
1017 adjust = dpos - mtod(mp, caddr_t);
1018 mp->m_len -= adjust;
1019 if (mp->m_len > 0 && adjust > 0)
1020 NFSMADV(mp, adjust);
1021 }
1022 if (zeroing)
1023 mp->m_len = 0;
1024 else if (mp->m_len > 0) {
1025 i += mp->m_len;
1026 if (i > len) {
1027 mp->m_len -= (i - len);
1028 zeroing = 1;
1029 }
1030 if (mp->m_len > 0)
1031 cnt++;
1032 }
1033 mp = mp->m_next;
1034 }
1035 }
1036 if (len > NFS_MAXDATA || len < 0 || i < len) {
1037 error = EIO;
1038 nfsm_reply(2 * NFSX_UNSIGNED);
1039 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1040 error = 0;
1041 goto nfsmout;
1042 }
1043 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
1044 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
1045 if (error) {
1046 vp = NULL;
1047 nfsm_reply(2 * NFSX_UNSIGNED);
1048 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1049 error = 0;
1050 goto nfsmout;
1051 }
1052 if (v3)
3b568787 1053 forat_ret = VOP_GETATTR(vp, &forat, td);
984263bc
MD
1054 if (vp->v_type != VREG) {
1055 if (v3)
1056 error = EINVAL;
1057 else
1058 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
1059 }
1060 if (!error) {
dadab5e9 1061 error = nfsrv_access(vp, VWRITE, cred, rdonly, td, 1);
984263bc
MD
1062 }
1063 if (error) {
1064 vput(vp);
1065 vp = NULL;
1066 nfsm_reply(NFSX_WCCDATA(v3));
1067 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1068 error = 0;
1069 goto nfsmout;
1070 }
1071
1072 if (len > 0) {
1073 MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP,
1074 M_WAITOK);
1075 uiop->uio_iov = iv = ivp;
1076 uiop->uio_iovcnt = cnt;
1077 mp = mrep;
1078 while (mp) {
1079 if (mp->m_len > 0) {
1080 ivp->iov_base = mtod(mp, caddr_t);
1081 ivp->iov_len = mp->m_len;
1082 ivp++;
1083 }
1084 mp = mp->m_next;
1085 }
1086
1087 /*
1088 * XXX
1089 * The IO_METASYNC flag indicates that all metadata (and not just
1090 * enough to ensure data integrity) mus be written to stable storage
1091 * synchronously.
1092 * (IO_METASYNC is not yet implemented in 4.4BSD-Lite.)
1093 */
1094 if (stable == NFSV3WRITE_UNSTABLE)
1095 ioflags = IO_NODELOCKED;
1096 else if (stable == NFSV3WRITE_DATASYNC)
1097 ioflags = (IO_SYNC | IO_NODELOCKED);
1098 else
1099 ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
1100 uiop->uio_resid = len;
1101 uiop->uio_rw = UIO_WRITE;
1102 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 1103 uiop->uio_td = NULL;
984263bc
MD
1104 uiop->uio_offset = off;
1105 error = VOP_WRITE(vp, uiop, ioflags, cred);
1106 nfsstats.srvvop_writes++;
1107 FREE((caddr_t)iv, M_TEMP);
1108 }
3b568787 1109 aftat_ret = VOP_GETATTR(vp, vap, td);
984263bc
MD
1110 vput(vp);
1111 vp = NULL;
1112 if (!error)
1113 error = aftat_ret;
1114 nfsm_reply(NFSX_PREOPATTR(v3) + NFSX_POSTOPORFATTR(v3) +
1115 2 * NFSX_UNSIGNED + NFSX_WRITEVERF(v3));
1116 if (v3) {
1117 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
1118 if (error) {
1119 error = 0;
1120 goto nfsmout;
1121 }
1122 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1123 *tl++ = txdr_unsigned(retlen);
1124 /*
1125 * If nfs_async is set, then pretend the write was FILESYNC.
1126 */
1127 if (stable == NFSV3WRITE_UNSTABLE && !nfs_async)
1128 *tl++ = txdr_unsigned(stable);
1129 else
1130 *tl++ = txdr_unsigned(NFSV3WRITE_FILESYNC);
1131 /*
1132 * Actually, there is no need to txdr these fields,
1133 * but it may make the values more human readable,
1134 * for debugging purposes.
1135 */
1136 if (nfsver.tv_sec == 0)
1137 nfsver = boottime;
1138 *tl++ = txdr_unsigned(nfsver.tv_sec);
3a6f9faf 1139 *tl = txdr_unsigned(nfsver.tv_nsec / 1000);
984263bc
MD
1140 } else {
1141 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1142 nfsm_srvfillattr(vap, fp);
1143 }
1144nfsmout:
1145 if (vp)
1146 vput(vp);
1147 return(error);
1148}
1149
1150/*
1151 * NFS write service with write gathering support. Called when
1152 * nfsrvw_procrastinate > 0.
1153 * See: Chet Juszczak, "Improving the Write Performance of an NFS Server",
1154 * in Proc. of the Winter 1994 Usenix Conference, pg. 247-259, San Franscisco,
1155 * Jan. 1994.
1156 */
1157int
e851b29e
CP
1158nfsrv_writegather(struct nfsrv_descript **ndp, struct nfssvc_sock *slp,
1159 struct thread *td, struct mbuf **mrq)
984263bc 1160{
dadab5e9
MD
1161 struct iovec *ivp;
1162 struct mbuf *mp;
1163 struct nfsrv_descript *wp, *nfsd, *owp, *swp;
1164 struct nfs_fattr *fp;
1165 int i;
984263bc
MD
1166 struct iovec *iov;
1167 struct nfsrvw_delayhash *wpp;
1168 struct ucred *cred;
1169 struct vattr va, forat;
dadab5e9
MD
1170 u_int32_t *tl;
1171 int32_t t1;
984263bc 1172 caddr_t bpos, dpos;
e07fef60 1173 int error = 0, rdonly, len, forat_ret = 1;
165dba55 1174 int ioflags, aftat_ret = 1, adjust, v3, zeroing;
984263bc
MD
1175 char *cp2;
1176 struct mbuf *mb, *mb2, *mreq, *mrep, *md;
1177 struct vnode *vp = NULL;
1178 struct uio io, *uiop = &io;
e07fef60 1179 u_quad_t cur_usec;
984263bc
MD
1180
1181 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
1182#ifndef nolint
1183 i = 0;
1184 len = 0;
1185#endif
1186 *mrq = NULL;
1187 if (*ndp) {
1188 nfsd = *ndp;
1189 *ndp = NULL;
1190 mrep = nfsd->nd_mrep;
1191 md = nfsd->nd_md;
1192 dpos = nfsd->nd_dpos;
1193 cred = &nfsd->nd_cr;
1194 v3 = (nfsd->nd_flag & ND_NFSV3);
1195 LIST_INIT(&nfsd->nd_coalesce);
1196 nfsd->nd_mreq = NULL;
1197 nfsd->nd_stable = NFSV3WRITE_FILESYNC;
1198 cur_usec = nfs_curusec();
1199 nfsd->nd_time = cur_usec +
1200 (v3 ? nfsrvw_procrastinate_v3 : nfsrvw_procrastinate);
1201
1202 /*
1203 * Now, get the write header..
1204 */
1205 nfsm_srvmtofh(&nfsd->nd_fh);
1206 if (v3) {
1207 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1208 nfsd->nd_off = fxdr_hyper(tl);
1209 tl += 3;
1210 nfsd->nd_stable = fxdr_unsigned(int, *tl++);
1211 } else {
1212 nfsm_dissect(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1213 nfsd->nd_off = (off_t)fxdr_unsigned(u_int32_t, *++tl);
1214 tl += 2;
1215 if (nfs_async)
1216 nfsd->nd_stable = NFSV3WRITE_UNSTABLE;
1217 }
1218 len = fxdr_unsigned(int32_t, *tl);
1219 nfsd->nd_len = len;
1220 nfsd->nd_eoff = nfsd->nd_off + len;
1221
1222 /*
1223 * Trim the header out of the mbuf list and trim off any trailing
1224 * junk so that the mbuf list has only the write data.
1225 */
1226 zeroing = 1;
1227 i = 0;
1228 mp = mrep;
1229 while (mp) {
1230 if (mp == md) {
1231 zeroing = 0;
1232 adjust = dpos - mtod(mp, caddr_t);
1233 mp->m_len -= adjust;
1234 if (mp->m_len > 0 && adjust > 0)
1235 NFSMADV(mp, adjust);
1236 }
1237 if (zeroing)
1238 mp->m_len = 0;
1239 else {
1240 i += mp->m_len;
1241 if (i > len) {
1242 mp->m_len -= (i - len);
1243 zeroing = 1;
1244 }
1245 }
1246 mp = mp->m_next;
1247 }
1248 if (len > NFS_MAXDATA || len < 0 || i < len) {
1249nfsmout:
1250 m_freem(mrep);
1251 error = EIO;
1252 nfsm_writereply(2 * NFSX_UNSIGNED, v3);
1253 if (v3)
1254 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1255 nfsd->nd_mreq = mreq;
1256 nfsd->nd_mrep = NULL;
1257 nfsd->nd_time = 0;
1258 }
1259
1260 /*
1261 * Add this entry to the hash and time queues.
1262 */
165dba55 1263 crit_enter();
984263bc
MD
1264 owp = NULL;
1265 wp = slp->ns_tq.lh_first;
1266 while (wp && wp->nd_time < nfsd->nd_time) {
1267 owp = wp;
1268 wp = wp->nd_tq.le_next;
1269 }
1270 NFS_DPF(WG, ("Q%03x", nfsd->nd_retxid & 0xfff));
1271 if (owp) {
1272 LIST_INSERT_AFTER(owp, nfsd, nd_tq);
1273 } else {
1274 LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
1275 }
1276 if (nfsd->nd_mrep) {
1277 wpp = NWDELAYHASH(slp, nfsd->nd_fh.fh_fid.fid_data);
1278 owp = NULL;
1279 wp = wpp->lh_first;
1280 while (wp &&
1281 bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
1282 owp = wp;
1283 wp = wp->nd_hash.le_next;
1284 }
1285 while (wp && wp->nd_off < nfsd->nd_off &&
1286 !bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
1287 owp = wp;
1288 wp = wp->nd_hash.le_next;
1289 }
1290 if (owp) {
1291 LIST_INSERT_AFTER(owp, nfsd, nd_hash);
1292
1293 /*
1294 * Search the hash list for overlapping entries and
1295 * coalesce.
1296 */
1297 for(; nfsd && NFSW_CONTIG(owp, nfsd); nfsd = wp) {
1298 wp = nfsd->nd_hash.le_next;
1299 if (NFSW_SAMECRED(owp, nfsd))
1300 nfsrvw_coalesce(owp, nfsd);
1301 }
1302 } else {
1303 LIST_INSERT_HEAD(wpp, nfsd, nd_hash);
1304 }
1305 }
165dba55 1306 crit_exit();
984263bc
MD
1307 }
1308
1309 /*
1310 * Now, do VOP_WRITE()s for any one(s) that need to be done now
1311 * and generate the associated reply mbuf list(s).
1312 */
1313loop1:
1314 cur_usec = nfs_curusec();
165dba55 1315 crit_enter();
984263bc
MD
1316 for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = owp) {
1317 owp = nfsd->nd_tq.le_next;
1318 if (nfsd->nd_time > cur_usec)
1319 break;
1320 if (nfsd->nd_mreq)
1321 continue;
1322 NFS_DPF(WG, ("P%03x", nfsd->nd_retxid & 0xfff));
1323 LIST_REMOVE(nfsd, nd_tq);
1324 LIST_REMOVE(nfsd, nd_hash);
165dba55 1325 crit_exit();
984263bc
MD
1326 mrep = nfsd->nd_mrep;
1327 nfsd->nd_mrep = NULL;
1328 cred = &nfsd->nd_cr;
1329 v3 = (nfsd->nd_flag & ND_NFSV3);
1330 forat_ret = aftat_ret = 1;
1331 error = nfsrv_fhtovp(&nfsd->nd_fh, 1, &vp, cred, slp,
1332 nfsd->nd_nam, &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
1333 if (!error) {
1334 if (v3)
3b568787 1335 forat_ret = VOP_GETATTR(vp, &forat, td);
984263bc
MD
1336 if (vp->v_type != VREG) {
1337 if (v3)
1338 error = EINVAL;
1339 else
1340 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
1341 }
1342 } else {
1343 vp = NULL;
1344 }
1345 if (!error) {
dadab5e9 1346 error = nfsrv_access(vp, VWRITE, cred, rdonly, td, 1);
984263bc
MD
1347 }
1348
1349 if (nfsd->nd_stable == NFSV3WRITE_UNSTABLE)
1350 ioflags = IO_NODELOCKED;
1351 else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC)
1352 ioflags = (IO_SYNC | IO_NODELOCKED);
1353 else
1354 ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
1355 uiop->uio_rw = UIO_WRITE;
1356 uiop->uio_segflg = UIO_SYSSPACE;
dadab5e9 1357 uiop->uio_td = NULL;
984263bc
MD
1358 uiop->uio_offset = nfsd->nd_off;
1359 uiop->uio_resid = nfsd->nd_eoff - nfsd->nd_off;
1360 if (uiop->uio_resid > 0) {
1361 mp = mrep;
1362 i = 0;
1363 while (mp) {
1364 if (mp->m_len > 0)
1365 i++;
1366 mp = mp->m_next;
1367 }
1368 uiop->uio_iovcnt = i;
1369 MALLOC(iov, struct iovec *, i * sizeof (struct iovec),
1370 M_TEMP, M_WAITOK);
1371 uiop->uio_iov = ivp = iov;
1372 mp = mrep;
1373 while (mp) {
1374 if (mp->m_len > 0) {
1375 ivp->iov_base = mtod(mp, caddr_t);
1376 ivp->iov_len = mp->m_len;
1377 ivp++;
1378 }
1379 mp = mp->m_next;
1380 }
1381 if (!error) {
1382 error = VOP_WRITE(vp, uiop, ioflags, cred);
1383 nfsstats.srvvop_writes++;
1384 }
1385 FREE((caddr_t)iov, M_TEMP);
1386 }
1387 m_freem(mrep);
1388 if (vp) {
3b568787 1389 aftat_ret = VOP_GETATTR(vp, &va, td);
984263bc
MD
1390 vput(vp);
1391 vp = NULL;
1392 }
1393
1394 /*
1395 * Loop around generating replies for all write rpcs that have
1396 * now been completed.
1397 */
1398 swp = nfsd;
1399 do {
1400 NFS_DPF(WG, ("R%03x", nfsd->nd_retxid & 0xfff));
1401 if (error) {
1402 nfsm_writereply(NFSX_WCCDATA(v3), v3);
1403 if (v3) {
1404 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1405 }
1406 } else {
1407 nfsm_writereply(NFSX_PREOPATTR(v3) +
1408 NFSX_POSTOPORFATTR(v3) + 2 * NFSX_UNSIGNED +
1409 NFSX_WRITEVERF(v3), v3);
1410 if (v3) {
1411 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1412 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1413 *tl++ = txdr_unsigned(nfsd->nd_len);
1414 *tl++ = txdr_unsigned(swp->nd_stable);
1415 /*
1416 * Actually, there is no need to txdr these fields,
1417 * but it may make the values more human readable,
1418 * for debugging purposes.
1419 */
1420 if (nfsver.tv_sec == 0)
1421 nfsver = boottime;
1422 *tl++ = txdr_unsigned(nfsver.tv_sec);
3a6f9faf 1423 *tl = txdr_unsigned(nfsver.tv_nsec / 1000);
984263bc
MD
1424 } else {
1425 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1426 nfsm_srvfillattr(&va, fp);
1427 }
1428 }
1429 nfsd->nd_mreq = mreq;
1430 if (nfsd->nd_mrep)
1431 panic("nfsrv_write: nd_mrep not free");
1432
1433 /*
1434 * Done. Put it at the head of the timer queue so that
1435 * the final phase can return the reply.
1436 */
165dba55 1437 crit_enter();
984263bc
MD
1438 if (nfsd != swp) {
1439 nfsd->nd_time = 0;
1440 LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
1441 }
1442 nfsd = swp->nd_coalesce.lh_first;
1443 if (nfsd) {
1444 LIST_REMOVE(nfsd, nd_tq);
1445 }
165dba55 1446 crit_exit();
984263bc 1447 } while (nfsd);
165dba55 1448 crit_enter();
984263bc
MD
1449 swp->nd_time = 0;
1450 LIST_INSERT_HEAD(&slp->ns_tq, swp, nd_tq);
165dba55 1451 crit_exit();
984263bc
MD
1452 goto loop1;
1453 }
165dba55 1454 crit_exit();
984263bc
MD
1455
1456 /*
1457 * Search for a reply to return.
1458 */
165dba55 1459 crit_enter();
984263bc
MD
1460 for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = nfsd->nd_tq.le_next)
1461 if (nfsd->nd_mreq) {
1462 NFS_DPF(WG, ("X%03x", nfsd->nd_retxid & 0xfff));
1463 LIST_REMOVE(nfsd, nd_tq);
1464 *mrq = nfsd->nd_mreq;
1465 *ndp = nfsd;
1466 break;
1467 }
165dba55 1468 crit_exit();
984263bc
MD
1469 return (0);
1470}
1471
1472/*
1473 * Coalesce the write request nfsd into owp. To do this we must:
1474 * - remove nfsd from the queues
1475 * - merge nfsd->nd_mrep into owp->nd_mrep
1476 * - update the nd_eoff and nd_stable for owp
1477 * - put nfsd on owp's nd_coalesce list
1478 * NB: Must be called at splsoftclock().
1479 */
1480static void
dadab5e9 1481nfsrvw_coalesce(struct nfsrv_descript *owp, struct nfsrv_descript *nfsd)
984263bc 1482{
dadab5e9
MD
1483 int overlap;
1484 struct mbuf *mp;
984263bc
MD
1485 struct nfsrv_descript *p;
1486
1487 NFS_DPF(WG, ("C%03x-%03x",
1488 nfsd->nd_retxid & 0xfff, owp->nd_retxid & 0xfff));
1489 LIST_REMOVE(nfsd, nd_hash);
1490 LIST_REMOVE(nfsd, nd_tq);
1491 if (owp->nd_eoff < nfsd->nd_eoff) {
1492 overlap = owp->nd_eoff - nfsd->nd_off;
1493 if (overlap < 0)
1494 panic("nfsrv_coalesce: bad off");
1495 if (overlap > 0)
1496 m_adj(nfsd->nd_mrep, overlap);
1497 mp = owp->nd_mrep;
1498 while (mp->m_next)
1499 mp = mp->m_next;
1500 mp->m_next = nfsd->nd_mrep;
1501 owp->nd_eoff = nfsd->nd_eoff;
1502 } else
1503 m_freem(nfsd->nd_mrep);
1504 nfsd->nd_mrep = NULL;
1505 if (nfsd->nd_stable == NFSV3WRITE_FILESYNC)
1506 owp->nd_stable = NFSV3WRITE_FILESYNC;
1507 else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC &&
1508 owp->nd_stable == NFSV3WRITE_UNSTABLE)
1509 owp->nd_stable = NFSV3WRITE_DATASYNC;
1510 LIST_INSERT_HEAD(&owp->nd_coalesce, nfsd, nd_tq);
1511
1512 /*
1513 * If nfsd had anything else coalesced into it, transfer them
1514 * to owp, otherwise their replies will never get sent.
1515 */
1516 for (p = nfsd->nd_coalesce.lh_first; p;
1517 p = nfsd->nd_coalesce.lh_first) {
1518 LIST_REMOVE(p, nd_tq);
1519 LIST_INSERT_HEAD(&owp->nd_coalesce, p, nd_tq);
1520 }
1521}
1522
1523/*
1524 * nfs create service
1525 * now does a truncate to 0 length via. setattr if it already exists
1526 */
1527int
e851b29e
CP
1528nfsrv_create(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1529 struct thread *td, struct mbuf **mrq)
984263bc
MD
1530{
1531 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1532 struct sockaddr *nam = nfsd->nd_nam;
1533 caddr_t dpos = nfsd->nd_dpos;
1534 struct ucred *cred = &nfsd->nd_cr;
dadab5e9 1535 struct nfs_fattr *fp;
984263bc 1536 struct vattr va, dirfor, diraft;
dadab5e9
MD
1537 struct vattr *vap = &va;
1538 struct nfsv2_sattr *sp;
1539 u_int32_t *tl;
fad57d0e 1540 struct nlookupdata nd;
dadab5e9 1541 int32_t t1;
984263bc 1542 caddr_t bpos;
e07fef60 1543 int error = 0, rdev, len, tsize, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
1544 int v3 = (nfsd->nd_flag & ND_NFSV3), how, exclusive_flag = 0;
1545 caddr_t cp;
1546 char *cp2;
1547 struct mbuf *mb, *mb2, *mreq;
fad57d0e
MD
1548 struct vnode *dirp;
1549 struct vnode *dvp;
1550 struct vnode *vp;
984263bc
MD
1551 nfsfh_t nfh;
1552 fhandle_t *fhp;
e07fef60 1553 u_quad_t tempsize;
984263bc
MD
1554 u_char cverf[NFSX_V3CREATEVERF];
1555
1556 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
1557#ifndef nolint
1558 rdev = 0;
1559#endif
fad57d0e
MD
1560 nlookup_zero(&nd);
1561 dirp = NULL;
1562 dvp = NULL;
1563 vp = NULL;
984263bc
MD
1564
1565 fhp = &nfh.fh_generic;
1566 nfsm_srvmtofh(fhp);
1567 nfsm_srvnamesiz(len);
1568
984263bc
MD
1569 /*
1570 * Call namei and do initial cleanup to get a few things
1571 * out of the way. If we get an initial error we cleanup
1572 * and return here to avoid special-casing the invalid nd
1573 * structure through the rest of the case. dirp may be
1574 * set even if an error occurs, but the nd structure will not
1575 * be valid at all if an error occurs so we have to invalidate it
1576 * prior to calling nfsm_reply ( which might goto nfsmout ).
1577 */
fad57d0e
MD
1578 error = nfs_namei(&nd, cred, NAMEI_CREATE, &dvp, &vp,
1579 fhp, len, slp, nam, &md, &dpos, &dirp,
1580 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc
MD
1581 if (dirp) {
1582 if (v3) {
3b568787 1583 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
1584 } else {
1585 vrele(dirp);
1586 dirp = NULL;
1587 }
1588 }
1589 if (error) {
1590 nfsm_reply(NFSX_WCCDATA(v3));
1591 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1592 error = 0;
1593 goto nfsmout;
1594 }
1595
1596 /*
1597 * No error. Continue. State:
1598 *
984263bc 1599 * dirp may be valid
fad57d0e
MD
1600 * vp may be valid or NULL if the target does not
1601 * exist.
1602 * dvp is valid
984263bc
MD
1603 *
1604 * The error state is set through the code and we may also do some
1605 * opportunistic releasing of vnodes to avoid holding locks through
1606 * NFS I/O. The cleanup at the end is a catch-all
1607 */
1608
1609 VATTR_NULL(vap);
1610 if (v3) {
1611 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
1612 how = fxdr_unsigned(int, *tl);
1613 switch (how) {
1614 case NFSV3CREATE_GUARDED:
fad57d0e 1615 if (vp) {
984263bc
MD
1616 error = EEXIST;
1617 break;
1618 }
1619 /* fall through */
1620 case NFSV3CREATE_UNCHECKED:
1621 nfsm_srvsattr(vap);
1622 break;
1623 case NFSV3CREATE_EXCLUSIVE:
1624 nfsm_dissect(cp, caddr_t, NFSX_V3CREATEVERF);
1625 bcopy(cp, cverf, NFSX_V3CREATEVERF);
1626 exclusive_flag = 1;
1627 break;
1628 };
1629 vap->va_type = VREG;
1630 } else {
1631 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
1632 vap->va_type = IFTOVT(fxdr_unsigned(u_int32_t, sp->sa_mode));
1633 if (vap->va_type == VNON)
1634 vap->va_type = VREG;
1635 vap->va_mode = nfstov_mode(sp->sa_mode);
1636 switch (vap->va_type) {
1637 case VREG:
1638 tsize = fxdr_unsigned(int32_t, sp->sa_size);
1639 if (tsize != -1)
1640 vap->va_size = (u_quad_t)tsize;
1641 break;
1642 case VCHR:
1643 case VBLK:
1644 case VFIFO:
1645 rdev = fxdr_unsigned(long, sp->sa_size);
1646 break;
1647 default:
1648 break;
1649 };
1650 }
1651
1652 /*
1653 * Iff doesn't exist, create it
1654 * otherwise just truncate to 0 length
1655 * should I set the mode too ?
1656 *
1657 * The only possible error we can have at this point is EEXIST.
1658 * nd.ni_vp will also be non-NULL in that case.
1659 */
fad57d0e 1660 if (vp == NULL) {
984263bc
MD
1661 if (vap->va_mode == (mode_t)VNOVAL)
1662 vap->va_mode = 0;
1663 if (vap->va_type == VREG || vap->va_type == VSOCK) {
d6593715
MD
1664 vput(dvp);
1665 dvp = NULL;
fad57d0e
MD
1666 error = VOP_NCREATE(nd.nl_ncp, &vp, nd.nl_cred, vap);
1667 if (error == 0) {
7540ab49
MD
1668 if (vap->va_type == VREG)
1669 vinitvmio(vp);
984263bc
MD
1670 if (exclusive_flag) {
1671 exclusive_flag = 0;
1672 VATTR_NULL(vap);
1673 bcopy(cverf, (caddr_t)&vap->va_atime,
1674 NFSX_V3CREATEVERF);
fad57d0e 1675 error = VOP_SETATTR(vp, vap, cred, td);
984263bc
MD
1676 }
1677 }
1678 } else if (
1679 vap->va_type == VCHR ||
1680 vap->va_type == VBLK ||
1681 vap->va_type == VFIFO
1682 ) {
1683 /*
1684 * Handle SysV FIFO node special cases. All other
1685 * devices require super user to access.
1686 */
1687 if (vap->va_type == VCHR && rdev == 0xffffffff)
1688 vap->va_type = VFIFO;
1689 if (vap->va_type != VFIFO &&
dadab5e9 1690 (error = suser_cred(cred, 0))) {
984263bc
MD
1691 goto nfsmreply0;
1692 }
1693 vap->va_rdev = rdev;
984263bc 1694
d6593715
MD
1695 vput(dvp);
1696 dvp = NULL;
fad57d0e
MD
1697 error = VOP_NMKNOD(nd.nl_ncp, &vp, nd.nl_cred, vap);
1698 if (error)
984263bc 1699 goto nfsmreply0;
fad57d0e
MD
1700#if 0
1701 /*
1702 * XXX what is this junk supposed to do ?
1703 */
1704
1705 vput(vp);
1706 vp = NULL;
984263bc
MD
1707
1708 /*
1709 * release dvp prior to lookup
1710 */
fad57d0e
MD
1711 vput(dvp);
1712 dvp = NULL;
984263bc
MD
1713
1714 /*
1715 * Setup for lookup.
1716 *
1717 * Even though LOCKPARENT was cleared, ni_dvp may
1718 * be garbage.
1719 */
2b69e610
MD
1720 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
1721 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT);
dadab5e9 1722 nd.ni_cnd.cn_td = td;
984263bc
MD
1723 nd.ni_cnd.cn_cred = cred;
1724
1725 error = lookup(&nd);
1726 nd.ni_dvp = NULL;
1727
1728 if (error != 0) {
1729 nfsm_reply(0);
1730 /* fall through on certain errors */
1731 }
1732 nfsrv_object_create(nd.ni_vp);
2b69e610 1733 if (nd.ni_cnd.cn_flags & CNP_ISSYMLINK) {
984263bc
MD
1734 error = EINVAL;
1735 goto nfsmreply0;
1736 }
fad57d0e 1737#endif
984263bc
MD
1738 } else {
1739 error = ENXIO;
1740 }
1741 } else {
1742 if (vap->va_size != -1) {
fad57d0e
MD
1743 error = nfsrv_access(vp, VWRITE, cred,
1744 (nd.nl_flags & NLC_NFS_RDONLY), td, 0);
984263bc 1745 if (!error) {
984263bc
MD
1746 tempsize = vap->va_size;
1747 VATTR_NULL(vap);
1748 vap->va_size = tempsize;
fad57d0e 1749 error = VOP_SETATTR(vp, vap, cred, td);
984263bc
MD
1750 }
1751 }
1752 }
1753
1754 if (!error) {
1755 bzero((caddr_t)fhp, sizeof(nfh));
fad57d0e
MD
1756 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1757 error = VFS_VPTOFH(vp, &fhp->fh_fid);
984263bc 1758 if (!error)
fad57d0e 1759 error = VOP_GETATTR(vp, vap, td);
984263bc
MD
1760 }
1761 if (v3) {
1762 if (exclusive_flag && !error &&
1763 bcmp(cverf, (caddr_t)&vap->va_atime, NFSX_V3CREATEVERF))
1764 error = EEXIST;
3b568787 1765 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
1766 vrele(dirp);
1767 dirp = NULL;
1768 }
1769 nfsm_reply(NFSX_SRVFH(v3) + NFSX_FATTR(v3) + NFSX_WCCDATA(v3));
1770 if (v3) {
1771 if (!error) {
1772 nfsm_srvpostop_fh(fhp);
1773 nfsm_srvpostop_attr(0, vap);
1774 }
1775 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1776 error = 0;
1777 } else {
1778 nfsm_srvfhtom(fhp, v3);
1779 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1780 nfsm_srvfillattr(vap, fp);
1781 }
1782 goto nfsmout;
1783
1784nfsmreply0:
1785 nfsm_reply(0);
1786 error = 0;
1787 /* fall through */
1788
1789nfsmout:
984263bc
MD
1790 if (dirp)
1791 vrele(dirp);
fad57d0e
MD
1792 nlookup_done(&nd);
1793 if (dvp) {
1794 if (dvp == vp)
1795 vrele(dvp);
984263bc 1796 else
fad57d0e 1797 vput(dvp);
984263bc 1798 }
fad57d0e
MD
1799 if (vp)
1800 vput(vp);
984263bc
MD
1801 return (error);
1802}
1803
1804/*
1805 * nfs v3 mknod service
1806 */
1807int
e851b29e
CP
1808nfsrv_mknod(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1809 struct thread *td, struct mbuf **mrq)
984263bc
MD
1810{
1811 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1812 struct sockaddr *nam = nfsd->nd_nam;
1813 caddr_t dpos = nfsd->nd_dpos;
1814 struct ucred *cred = &nfsd->nd_cr;
1815 struct vattr va, dirfor, diraft;
dadab5e9
MD
1816 struct vattr *vap = &va;
1817 u_int32_t *tl;
fad57d0e 1818 struct nlookupdata nd;
dadab5e9 1819 int32_t t1;
984263bc 1820 caddr_t bpos;
e07fef60 1821 int error = 0, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
1822 u_int32_t major, minor;
1823 enum vtype vtyp;
1824 char *cp2;
1825 struct mbuf *mb, *mb2, *mreq;
fad57d0e
MD
1826 struct vnode *dirp;
1827 struct vnode *dvp;
1828 struct vnode *vp;
984263bc
MD
1829 nfsfh_t nfh;
1830 fhandle_t *fhp;
984263bc
MD
1831
1832 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
1833 nlookup_zero(&nd);
1834 dirp = NULL;
1835 dvp = NULL;
1836 vp = NULL;
984263bc
MD
1837
1838 fhp = &nfh.fh_generic;
1839 nfsm_srvmtofh(fhp);
1840 nfsm_srvnamesiz(len);
1841
984263bc
MD
1842 /*
1843 * Handle nfs_namei() call. If an error occurs, the nd structure
1844 * is not valid. However, nfsm_*() routines may still jump to
1845 * nfsmout.
1846 */
1847
fad57d0e
MD
1848 error = nfs_namei(&nd, cred, NAMEI_CREATE, &dvp, &vp,
1849 fhp, len, slp, nam, &md, &dpos, &dirp,
1850 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 1851 if (dirp)
3b568787 1852 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
1853 if (error) {
1854 nfsm_reply(NFSX_WCCDATA(1));
1855 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1856 error = 0;
1857 goto nfsmout;
1858 }
1859 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
1860 vtyp = nfsv3tov_type(*tl);
1861 if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) {
1862 error = NFSERR_BADTYPE;
1863 goto out;
1864 }
1865 VATTR_NULL(vap);
1866 nfsm_srvsattr(vap);
1867 if (vtyp == VCHR || vtyp == VBLK) {
1868 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1869 major = fxdr_unsigned(u_int32_t, *tl++);
1870 minor = fxdr_unsigned(u_int32_t, *tl);
1871 vap->va_rdev = makeudev(major, minor);
1872 }
1873
1874 /*
1875 * Iff doesn't exist, create it.
1876 */
fad57d0e 1877 if (vp) {
984263bc
MD
1878 error = EEXIST;
1879 goto out;
1880 }
1881 vap->va_type = vtyp;
1882 if (vap->va_mode == (mode_t)VNOVAL)
1883 vap->va_mode = 0;
1884 if (vtyp == VSOCK) {
fad57d0e 1885 error = VOP_NCREATE(nd.nl_ncp, &vp, nd.nl_cred, vap);
984263bc 1886 } else {
dadab5e9 1887 if (vtyp != VFIFO && (error = suser_cred(cred, 0)))
984263bc 1888 goto out;
984263bc 1889
fad57d0e
MD
1890 error = VOP_NMKNOD(nd.nl_ncp, &vp, nd.nl_cred, vap);
1891 if (error)
984263bc 1892 goto out;
fad57d0e
MD
1893
1894#if 0
1895 vput(vp);
1896 vp = NULL;
984263bc
MD
1897
1898 /*
1899 * Release dvp prior to lookup
1900 */
fad57d0e
MD
1901 vput(dvp);
1902 dvp = NULL;
984263bc 1903
fad57d0e
MD
1904 /*
1905 * XXX what is this stuff for?
1906 */
dadab5e9 1907 KKASSERT(td->td_proc);
2b69e610
MD
1908 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
1909 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT);
dadab5e9
MD
1910 nd.ni_cnd.cn_td = td;
1911 nd.ni_cnd.cn_cred = td->td_proc->p_ucred;
984263bc
MD
1912
1913 error = lookup(&nd);
1914 nd.ni_dvp = NULL;
1915
1916 if (error)
1917 goto out;
2b69e610 1918 if (nd.ni_cnd.cn_flags & CNP_ISSYMLINK)
984263bc 1919 error = EINVAL;
fad57d0e 1920#endif
984263bc
MD
1921 }
1922
1923 /*
1924 * send response, cleanup, return.
1925 */
1926out:
fad57d0e
MD
1927 nlookup_done(&nd);
1928 if (dvp) {
1929 if (dvp == vp)
1930 vrele(dvp);
984263bc 1931 else
fad57d0e
MD
1932 vput(dvp);
1933 dvp = NULL;
984263bc 1934 }
984263bc
MD
1935 if (!error) {
1936 bzero((caddr_t)fhp, sizeof(nfh));
1937 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1938 error = VFS_VPTOFH(vp, &fhp->fh_fid);
1939 if (!error)
3b568787 1940 error = VOP_GETATTR(vp, vap, td);
984263bc
MD
1941 }
1942 if (vp) {
1943 vput(vp);
1944 vp = NULL;
984263bc 1945 }
3b568787 1946 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
1947 if (dirp) {
1948 vrele(dirp);
1949 dirp = NULL;
1950 }
1951 nfsm_reply(NFSX_SRVFH(1) + NFSX_POSTOPATTR(1) + NFSX_WCCDATA(1));
1952 if (!error) {
1953 nfsm_srvpostop_fh(fhp);
1954 nfsm_srvpostop_attr(0, vap);
1955 }
1956 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1957 return (0);
1958nfsmout:
1959 if (dirp)
1960 vrele(dirp);
fad57d0e
MD
1961 nlookup_done(&nd);
1962 if (dvp) {
1963 if (dvp == vp)
1964 vrele(dvp);
984263bc 1965 else
fad57d0e 1966 vput(dvp);
984263bc 1967 }
fad57d0e
MD
1968 if (vp)
1969 vput(vp);
984263bc
MD
1970 return (error);
1971}
1972
1973/*
1974 * nfs remove service
1975 */
1976int
e851b29e
CP
1977nfsrv_remove(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
1978 struct thread *td, struct mbuf **mrq)
984263bc
MD
1979{
1980 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1981 struct sockaddr *nam = nfsd->nd_nam;
1982 caddr_t dpos = nfsd->nd_dpos;
1983 struct ucred *cred = &nfsd->nd_cr;
fad57d0e 1984 struct nlookupdata nd;
dadab5e9
MD
1985 u_int32_t *tl;
1986 int32_t t1;
984263bc 1987 caddr_t bpos;
e07fef60 1988 int error = 0, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
1989 int v3 = (nfsd->nd_flag & ND_NFSV3);
1990 char *cp2;
1991 struct mbuf *mb, *mreq;
1992 struct vnode *dirp;
fad57d0e
MD
1993 struct vnode *dvp;
1994 struct vnode *vp;
984263bc
MD
1995 struct vattr dirfor, diraft;
1996 nfsfh_t nfh;
1997 fhandle_t *fhp;
984263bc
MD
1998
1999 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2000 nlookup_zero(&nd);
2001 dirp = NULL;
2002 dvp = NULL;
2003 vp = NULL;
984263bc
MD
2004
2005 fhp = &nfh.fh_generic;
2006 nfsm_srvmtofh(fhp);
2007 nfsm_srvnamesiz(len);
2008
fad57d0e
MD
2009 error = nfs_namei(&nd, cred, NAMEI_DELETE, &dvp, &vp,
2010 fhp, len, slp, nam, &md, &dpos, &dirp,
2011 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2012 if (dirp) {
fad57d0e 2013 if (v3)
3b568787 2014 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2015 }
2016 if (error == 0) {
fad57d0e 2017 if (vp->v_type == VDIR) {
984263bc
MD
2018 error = EPERM; /* POSIX */
2019 goto out;
2020 }
2021 /*
2022 * The root of a mounted filesystem cannot be deleted.
2023 */
fad57d0e 2024 if (vp->v_flag & VROOT) {
984263bc
MD
2025 error = EBUSY;
2026 goto out;
2027 }
2028out:
2029 if (!error) {
d9ba7ca9
MD
2030 if (dvp) {
2031 if (dvp == vp)
2032 vrele(dvp);
2033 else
2034 vput(dvp);
2035 dvp = NULL;
2036 }
2037 if (vp) {
2038 vput(vp);
2039 vp = NULL;
2040 }
fad57d0e 2041 error = VOP_NREMOVE(nd.nl_ncp, nd.nl_cred);
984263bc
MD
2042 }
2043 }
fad57d0e 2044 if (dirp && v3)
3b568787 2045 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2046 nfsm_reply(NFSX_WCCDATA(v3));
2047 if (v3) {
2048 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2049 error = 0;
2050 }
2051nfsmout:
fad57d0e
MD
2052 nlookup_done(&nd);
2053 if (dirp)
2054 vrele(dirp);
2055 if (dvp) {
2056 if (dvp == vp)
2057 vrele(dvp);
984263bc 2058 else
fad57d0e 2059 vput(dvp);
984263bc 2060 }
fad57d0e
MD
2061 if (vp)
2062 vput(vp);
984263bc
MD
2063 return(error);
2064}
2065
2066/*
2067 * nfs rename service
2068 */
2069int
e851b29e
CP
2070nfsrv_rename(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2071 struct thread *td, struct mbuf **mrq)
984263bc
MD
2072{
2073 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2074 struct sockaddr *nam = nfsd->nd_nam;
2075 caddr_t dpos = nfsd->nd_dpos;
2076 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2077 u_int32_t *tl;
2078 int32_t t1;
984263bc 2079 caddr_t bpos;
e07fef60 2080 int error = 0, len, len2, fdirfor_ret = 1, fdiraft_ret = 1;
984263bc
MD
2081 int tdirfor_ret = 1, tdiraft_ret = 1;
2082 int v3 = (nfsd->nd_flag & ND_NFSV3);
2083 char *cp2;
2084 struct mbuf *mb, *mreq;
fad57d0e
MD
2085 struct nlookupdata fromnd, tond;
2086 struct vnode *fvp, *fdirp;
2087 struct vnode *tvp, *tdirp;
2088 struct namecache *ncp;
984263bc
MD
2089 struct vattr fdirfor, fdiraft, tdirfor, tdiraft;
2090 nfsfh_t fnfh, tnfh;
2091 fhandle_t *ffhp, *tfhp;
984263bc
MD
2092 uid_t saved_uid;
2093
2094 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2095#ifndef nolint
2096 fvp = (struct vnode *)0;
2097#endif
2098 ffhp = &fnfh.fh_generic;
2099 tfhp = &tnfh.fh_generic;
2100
2101 /*
2102 * Clear fields incase goto nfsmout occurs from macro.
2103 */
2104
fad57d0e
MD
2105 nlookup_zero(&fromnd);
2106 nlookup_zero(&tond);
2107 fdirp = NULL;
2108 tdirp = NULL;
984263bc
MD
2109
2110 nfsm_srvmtofh(ffhp);
2111 nfsm_srvnamesiz(len);
2112 /*
2113 * Remember our original uid so that we can reset cr_uid before
2114 * the second nfs_namei() call, in case it is remapped.
2115 */
2116 saved_uid = cred->cr_uid;
fad57d0e
MD
2117 error = nfs_namei(&fromnd, cred, NAMEI_DELETE, NULL, NULL,
2118 ffhp, len, slp, nam, &md, &dpos, &fdirp,
2119 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2120 if (fdirp) {
fad57d0e 2121 if (v3)
3b568787 2122 fdirfor_ret = VOP_GETATTR(fdirp, &fdirfor, td);
984263bc
MD
2123 }
2124 if (error) {
2125 nfsm_reply(2 * NFSX_WCCDATA(v3));
2126 nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
2127 nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
2128 error = 0;
2129 goto nfsmout;
2130 }
fad57d0e
MD
2131
2132 /*
2133 * We have to unlock the from ncp before we can safely lookup
2134 * the target ncp.
2135 */
2136 KKASSERT(fromnd.nl_flags & NLC_NCPISLOCKED);
2137 cache_unlock(fromnd.nl_ncp);
2138 fromnd.nl_flags &= ~NLC_NCPISLOCKED;
984263bc
MD
2139 nfsm_srvmtofh(tfhp);
2140 nfsm_strsiz(len2, NFS_MAXNAMLEN);
2141 cred->cr_uid = saved_uid;
fad57d0e
MD
2142
2143 error = nfs_namei(&tond, cred, NAMEI_RENAME, NULL, NULL,
2144 tfhp, len2, slp, nam, &md, &dpos, &tdirp,
2145 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2146 if (tdirp) {
fad57d0e 2147 if (v3)
3b568787 2148 tdirfor_ret = VOP_GETATTR(tdirp, &tdirfor, td);
984263bc
MD
2149 }
2150 if (error)
2151 goto out1;
2152
fad57d0e
MD
2153 /*
2154 * relock the source
2155 */
2156 if (cache_lock_nonblock(fromnd.nl_ncp) == 0) {
2157 cache_resolve(fromnd.nl_ncp, fromnd.nl_cred);
2158 } else if (fromnd.nl_ncp > tond.nl_ncp) {
2159 cache_lock(fromnd.nl_ncp);
2160 cache_resolve(fromnd.nl_ncp, fromnd.nl_cred);
2161 } else {
2162 cache_unlock(tond.nl_ncp);
2163 cache_lock(fromnd.nl_ncp);
2164 cache_resolve(fromnd.nl_ncp, fromnd.nl_cred);
2165 cache_lock(tond.nl_ncp);
2166 cache_resolve(tond.nl_ncp, tond.nl_cred);
2167 }
2168 fromnd.nl_flags |= NLC_NCPISLOCKED;
2169
2170 tvp = tond.nl_ncp->nc_vp;
2171 fvp = fromnd.nl_ncp->nc_vp;
2172
984263bc
MD
2173 if (tvp != NULL) {
2174 if (fvp->v_type == VDIR && tvp->v_type != VDIR) {
2175 if (v3)
2176 error = EEXIST;
2177 else
2178 error = EISDIR;
2179 goto out;
2180 } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) {
2181 if (v3)
2182 error = EEXIST;
2183 else
2184 error = ENOTDIR;
2185 goto out;
2186 }
2187 if (tvp->v_type == VDIR && tvp->v_mountedhere) {
2188 if (v3)
2189 error = EXDEV;
2190 else
2191 error = ENOTEMPTY;
2192 goto out;
2193 }
2194 }
2195 if (fvp->v_type == VDIR && fvp->v_mountedhere) {
2196 if (v3)
2197 error = EXDEV;
2198 else
2199 error = ENOTEMPTY;
2200 goto out;
2201 }
fad57d0e 2202 if (fromnd.nl_ncp->nc_mount != tond.nl_ncp->nc_mount) {
984263bc
MD
2203 if (v3)
2204 error = EXDEV;
2205 else
2206 error = ENOTEMPTY;
2207 goto out;
2208 }
fad57d0e 2209 if (fromnd.nl_ncp == tond.nl_ncp->nc_parent) {
984263bc
MD
2210 if (v3)
2211 error = EINVAL;
2212 else
2213 error = ENOTEMPTY;
2214 }
fad57d0e
MD
2215
2216 /*
2217 * You cannot rename a source into itself or a subdirectory of itself.
2218 * We check this by travsering the target directory upwards looking
2219 * for a match against the source.
2220 */
2221 if (error == 0) {
2222 for (ncp = tond.nl_ncp; ncp; ncp = ncp->nc_parent) {
2223 if (fromnd.nl_ncp == ncp) {
2224 error = EINVAL;
2225 break;
2226 }
2227 }
2228 }
2229
984263bc
MD
2230 /*
2231 * If source is the same as the destination (that is the
2232 * same vnode with the same name in the same directory),
2233 * then there is nothing to do.
2234 */
fad57d0e 2235 if (fromnd.nl_ncp == tond.nl_ncp)
984263bc
MD
2236 error = -1;
2237out:
2238 if (!error) {
2239 /*
fad57d0e 2240 * The VOP_NRENAME function releases all vnode references &
984263bc
MD
2241 * locks prior to returning so we need to clear the pointers
2242 * to bypass cleanup code later on.
2243 */
fad57d0e 2244 error = VOP_NRENAME(fromnd.nl_ncp, tond.nl_ncp, tond.nl_cred);
984263bc
MD
2245 } else {
2246 if (error == -1)
2247 error = 0;
2248 }
2249 /* fall through */
2250
2251out1:
2252 if (fdirp)
3b568787 2253 fdiraft_ret = VOP_GETATTR(fdirp, &fdiraft, td);
984263bc 2254 if (tdirp)
3b568787 2255 tdiraft_ret = VOP_GETATTR(tdirp, &tdiraft, td);
984263bc
MD
2256 nfsm_reply(2 * NFSX_WCCDATA(v3));
2257 if (v3) {
2258 nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
2259 nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
2260 }
2261 error = 0;
2262 /* fall through */
2263
2264nfsmout:
984263bc
MD
2265 if (tdirp)
2266 vrele(tdirp);
fad57d0e 2267 nlookup_done(&tond);
984263bc
MD
2268 if (fdirp)
2269 vrele(fdirp);
fad57d0e 2270 nlookup_done(&fromnd);
984263bc
MD
2271 return (error);
2272}
2273
2274/*
2275 * nfs link service
2276 */
2277int
e851b29e
CP
2278nfsrv_link(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2279 struct thread *td, struct mbuf **mrq)
984263bc
MD
2280{
2281 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2282 struct sockaddr *nam = nfsd->nd_nam;
2283 caddr_t dpos = nfsd->nd_dpos;
2284 struct ucred *cred = &nfsd->nd_cr;
fad57d0e 2285 struct nlookupdata nd;
dadab5e9
MD
2286 u_int32_t *tl;
2287 int32_t t1;
984263bc 2288 caddr_t bpos;
e07fef60 2289 int error = 0, rdonly, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2290 int getret = 1, v3 = (nfsd->nd_flag & ND_NFSV3);
2291 char *cp2;
2292 struct mbuf *mb, *mreq;
fad57d0e
MD
2293 struct vnode *dirp;
2294 struct vnode *dvp;
2295 struct vnode *vp;
2296 struct vnode *xp;
984263bc
MD
2297 struct vattr dirfor, diraft, at;
2298 nfsfh_t nfh, dnfh;
2299 fhandle_t *fhp, *dfhp;
984263bc
MD
2300
2301 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2302 nlookup_zero(&nd);
2303 dirp = dvp = vp = xp = NULL;
984263bc
MD
2304
2305 fhp = &nfh.fh_generic;
2306 dfhp = &dnfh.fh_generic;
2307 nfsm_srvmtofh(fhp);
2308 nfsm_srvmtofh(dfhp);
2309 nfsm_srvnamesiz(len);
2310
fad57d0e 2311 error = nfsrv_fhtovp(fhp, FALSE, &xp, cred, slp, nam,
984263bc
MD
2312 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
2313 if (error) {
2314 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2315 nfsm_srvpostop_attr(getret, &at);
2316 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
fad57d0e 2317 xp = NULL;
984263bc
MD
2318 error = 0;
2319 goto nfsmout;
2320 }
fad57d0e 2321 if (xp->v_type == VDIR) {
984263bc
MD
2322 error = EPERM; /* POSIX */
2323 goto out1;
2324 }
fad57d0e
MD
2325
2326 error = nfs_namei(&nd, cred, NAMEI_CREATE, &dvp, &vp,
2327 dfhp, len, slp, nam, &md, &dpos, &dirp,
2328 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2329 if (dirp) {
fad57d0e 2330 if (v3)
3b568787 2331 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2332 }
2333 if (error)
2334 goto out1;
2335
fad57d0e 2336 if (vp != NULL) {
984263bc
MD
2337 error = EEXIST;
2338 goto out;
2339 }
fad57d0e 2340 if (xp->v_mount != dvp->v_mount)
984263bc
MD
2341 error = EXDEV;
2342out:
2343 if (!error) {
fad57d0e 2344 error = VOP_NLINK(nd.nl_ncp, xp, nd.nl_cred);
984263bc
MD
2345 }
2346 /* fall through */
2347
2348out1:
2349 if (v3)
fad57d0e 2350 getret = VOP_GETATTR(xp, &at, td);
984263bc 2351 if (dirp)
3b568787 2352 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2353 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2354 if (v3) {
2355 nfsm_srvpostop_attr(getret, &at);
2356 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2357 error = 0;
2358 }
2359 /* fall through */
2360
2361nfsmout:
fad57d0e 2362 nlookup_done(&nd);
984263bc
MD
2363 if (dirp)
2364 vrele(dirp);
fad57d0e
MD
2365 if (xp)
2366 vrele(xp);
2367 if (dvp) {
2368 if (dvp == vp)
2369 vrele(dvp);
984263bc 2370 else
fad57d0e 2371 vput(dvp);
984263bc 2372 }
fad57d0e
MD
2373 if (vp)
2374 vput(vp);
984263bc
MD
2375 return(error);
2376}
2377
2378/*
2379 * nfs symbolic link service
2380 */
2381int
e851b29e
CP
2382nfsrv_symlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2383 struct thread *td, struct mbuf **mrq)
984263bc
MD
2384{
2385 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2386 struct sockaddr *nam = nfsd->nd_nam;
2387 caddr_t dpos = nfsd->nd_dpos;
2388 struct ucred *cred = &nfsd->nd_cr;
2389 struct vattr va, dirfor, diraft;
fad57d0e 2390 struct nlookupdata nd;
dadab5e9
MD
2391 struct vattr *vap = &va;
2392 u_int32_t *tl;
2393 int32_t t1;
984263bc
MD
2394 struct nfsv2_sattr *sp;
2395 char *bpos, *pathcp = (char *)0, *cp2;
2396 struct uio io;
2397 struct iovec iv;
e07fef60 2398 int error = 0, len, len2, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2399 int v3 = (nfsd->nd_flag & ND_NFSV3);
2400 struct mbuf *mb, *mreq, *mb2;
fad57d0e
MD
2401 struct vnode *dirp;
2402 struct vnode *vp;
984263bc
MD
2403 nfsfh_t nfh;
2404 fhandle_t *fhp;
984263bc
MD
2405
2406 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2407 nlookup_zero(&nd);
2408 dirp = vp = NULL;
984263bc
MD
2409
2410 fhp = &nfh.fh_generic;
2411 nfsm_srvmtofh(fhp);
2412 nfsm_srvnamesiz(len);
fad57d0e
MD
2413
2414 error = nfs_namei(&nd, cred, NAMEI_CREATE, NULL, &vp,
2415 fhp, len, slp, nam, &md, &dpos, &dirp,
2416 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2417 if (dirp) {
fad57d0e 2418 if (v3)
3b568787 2419 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2420 }
2421 if (error)
2422 goto out;
2423
2424 VATTR_NULL(vap);
2425 if (v3)
2426 nfsm_srvsattr(vap);
2427 nfsm_strsiz(len2, NFS_MAXPATHLEN);
2428 MALLOC(pathcp, caddr_t, len2 + 1, M_TEMP, M_WAITOK);
2429 iv.iov_base = pathcp;
2430 iv.iov_len = len2;
2431 io.uio_resid = len2;
2432 io.uio_offset = 0;
2433 io.uio_iov = &iv;
2434 io.uio_iovcnt = 1;
2435 io.uio_segflg = UIO_SYSSPACE;
2436 io.uio_rw = UIO_READ;
dadab5e9 2437 io.uio_td = NULL;
984263bc
MD
2438 nfsm_mtouio(&io, len2);
2439 if (!v3) {
2440 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
2441 vap->va_mode = nfstov_mode(sp->sa_mode);
2442 }
2443 *(pathcp + len2) = '\0';
fad57d0e 2444 if (vp) {
984263bc
MD
2445 error = EEXIST;
2446 goto out;
2447 }
2448
984263bc
MD
2449 if (vap->va_mode == (mode_t)VNOVAL)
2450 vap->va_mode = 0;
fad57d0e
MD
2451 error = VOP_NSYMLINK(nd.nl_ncp, &vp, nd.nl_cred, vap, pathcp);
2452 if (error == 0) {
2453 bzero((caddr_t)fhp, sizeof(nfh));
2454 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
2455 error = VFS_VPTOFH(vp, &fhp->fh_fid);
2456 if (!error)
2457 error = VOP_GETATTR(vp, vap, td);
2458 }
2459
2460#if 0
984263bc 2461 /*
fad57d0e
MD
2462 * We have a vp in hand from the new API call, we do not have to
2463 * look it up again.
984263bc 2464 */
984263bc
MD
2465 if (error == 0) {
2466 if (v3) {
2467 /*
2468 * Issue lookup. Leave SAVESTART set so we can easily free
2469 * the name buffer later on.
2470 *
2471 * since LOCKPARENT is not set, ni_dvp will be garbage on
2472 * return whether an error occurs or not.
2473 */
2b69e610
MD
2474 nd.ni_cnd.cn_nameiop = NAMEI_LOOKUP;
2475 nd.ni_cnd.cn_flags &= ~(CNP_LOCKPARENT | CNP_FOLLOW);
dadab5e9 2476 nd.ni_cnd.cn_td = td;
984263bc
MD
2477 nd.ni_cnd.cn_cred = cred;
2478
2479 error = lookup(&nd);
2480 nd.ni_dvp = NULL;
2481
2482 if (error == 0) {
2483 bzero((caddr_t)fhp, sizeof(nfh));
2484 fhp->fh_fsid = nd.ni_vp->v_mount->mnt_stat.f_fsid;
2485 error = VFS_VPTOFH(nd.ni_vp, &fhp->fh_fid);
2486 if (!error)
3b568787 2487 error = VOP_GETATTR(nd.ni_vp, vap, td);
984263bc
MD
2488 vput(nd.ni_vp);
2489 nd.ni_vp = NULL;
2490 }
2491 }
2492 }
fad57d0e 2493#endif
984263bc 2494out:
fad57d0e
MD
2495 if (vp) {
2496 vput(vp);
2497 vp = NULL;
2498 }
984263bc
MD
2499 if (pathcp) {
2500 FREE(pathcp, M_TEMP);
2501 pathcp = NULL;
2502 }
2503 if (dirp) {
3b568787 2504 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2505 vrele(dirp);
2506 dirp = NULL;
2507 }
984263bc
MD
2508 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2509 if (v3) {
2510 if (!error) {
2511 nfsm_srvpostop_fh(fhp);
2512 nfsm_srvpostop_attr(0, vap);
2513 }
2514 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2515 }
2516 error = 0;
2517 /* fall through */
2518
2519nfsmout:
fad57d0e
MD
2520 nlookup_done(&nd);
2521 if (vp)
2522 vput(vp);
984263bc
MD
2523 if (dirp)
2524 vrele(dirp);
2525 if (pathcp)
2526 FREE(pathcp, M_TEMP);
984263bc
MD
2527 return (error);
2528}
2529
2530/*
2531 * nfs mkdir service
2532 */
2533int
e851b29e
CP
2534nfsrv_mkdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2535 struct thread *td, struct mbuf **mrq)
984263bc
MD
2536{
2537 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2538 struct sockaddr *nam = nfsd->nd_nam;
2539 caddr_t dpos = nfsd->nd_dpos;
2540 struct ucred *cred = &nfsd->nd_cr;
2541 struct vattr va, dirfor, diraft;
dadab5e9
MD
2542 struct vattr *vap = &va;
2543 struct nfs_fattr *fp;
fad57d0e 2544 struct nlookupdata nd;
dadab5e9
MD
2545 caddr_t cp;
2546 u_int32_t *tl;
2547 int32_t t1;
984263bc 2548 caddr_t bpos;
e07fef60 2549 int error = 0, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2550 int v3 = (nfsd->nd_flag & ND_NFSV3);
2551 char *cp2;
2552 struct mbuf *mb, *mb2, *mreq;
fad57d0e
MD
2553 struct vnode *dirp;
2554 struct vnode *vp;
984263bc
MD
2555 nfsfh_t nfh;
2556 fhandle_t *fhp;
984263bc
MD
2557
2558 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2559 nlookup_zero(&nd);
2560 dirp = NULL;
2561 vp = NULL;
984263bc
MD
2562
2563 fhp = &nfh.fh_generic;
2564 nfsm_srvmtofh(fhp);
2565 nfsm_srvnamesiz(len);
984263bc 2566
fad57d0e
MD
2567 error = nfs_namei(&nd, cred, NAMEI_CREATE, NULL, &vp,
2568 fhp, len, slp, nam, &md, &dpos, &dirp,
2569 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2570 if (dirp) {
fad57d0e 2571 if (v3)
3b568787 2572 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2573 }
2574 if (error) {
2575 nfsm_reply(NFSX_WCCDATA(v3));
2576 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2577 error = 0;
2578 goto nfsmout;
2579 }
2580 VATTR_NULL(vap);
2581 if (v3) {
2582 nfsm_srvsattr(vap);
2583 } else {
2584 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
2585 vap->va_mode = nfstov_mode(*tl++);
2586 }
2587
2588 /*
2589 * At this point nd.ni_dvp is referenced and exclusively locked and
2590 * nd.ni_vp, if it exists, is referenced but not locked.
2591 */
2592
2593 vap->va_type = VDIR;
fad57d0e 2594 if (vp != NULL) {
984263bc
MD
2595 error = EEXIST;
2596 goto out;
2597 }
2598
2599 /*
2600 * Issue mkdir op. Since SAVESTART is not set, the pathname
2601 * component is freed by the VOP call. This will fill-in
2602 * nd.ni_vp, reference, and exclusively lock it.
2603 */
2604 if (vap->va_mode == (mode_t)VNOVAL)
2605 vap->va_mode = 0;
fad57d0e 2606 error = VOP_NMKDIR(nd.nl_ncp, &vp, nd.nl_cred, vap);
984263bc 2607
fad57d0e 2608 if (error == 0) {
984263bc 2609 bzero((caddr_t)fhp, sizeof(nfh));
fad57d0e
MD
2610 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
2611 error = VFS_VPTOFH(vp, &fhp->fh_fid);
2612 if (error == 0)
2613 error = VOP_GETATTR(vp, vap, td);
984263bc
MD
2614 }
2615out:
2616 if (dirp)
3b568787 2617 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2618 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2619 if (v3) {
2620 if (!error) {
2621 nfsm_srvpostop_fh(fhp);
2622 nfsm_srvpostop_attr(0, vap);
2623 }
2624 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2625 } else {
2626 nfsm_srvfhtom(fhp, v3);
2627 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
2628 nfsm_srvfillattr(vap, fp);
2629 }
2630 error = 0;
2631 /* fall through */
2632
2633nfsmout:
fad57d0e 2634 nlookup_done(&nd);
984263bc
MD
2635 if (dirp)
2636 vrele(dirp);
fad57d0e
MD
2637 if (vp)
2638 vput(vp);
984263bc
MD
2639 return (error);
2640}
2641
2642/*
2643 * nfs rmdir service
2644 */
2645int
e851b29e
CP
2646nfsrv_rmdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2647 struct thread *td, struct mbuf **mrq)
984263bc
MD
2648{
2649 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2650 struct sockaddr *nam = nfsd->nd_nam;
2651 caddr_t dpos = nfsd->nd_dpos;
2652 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2653 u_int32_t *tl;
2654 int32_t t1;
984263bc 2655 caddr_t bpos;
e07fef60 2656 int error = 0, len, dirfor_ret = 1, diraft_ret = 1;
984263bc
MD
2657 int v3 = (nfsd->nd_flag & ND_NFSV3);
2658 char *cp2;
2659 struct mbuf *mb, *mreq;
fad57d0e
MD
2660 struct vnode *dirp;
2661 struct vnode *vp;
984263bc
MD
2662 struct vattr dirfor, diraft;
2663 nfsfh_t nfh;
2664 fhandle_t *fhp;
fad57d0e 2665 struct nlookupdata nd;
984263bc
MD
2666
2667 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
fad57d0e
MD
2668 nlookup_zero(&nd);
2669 dirp = NULL;
2670 vp = NULL;
984263bc
MD
2671
2672 fhp = &nfh.fh_generic;
2673 nfsm_srvmtofh(fhp);
2674 nfsm_srvnamesiz(len);
fad57d0e
MD
2675
2676 error = nfs_namei(&nd, cred, NAMEI_DELETE, NULL, &vp,
2677 fhp, len, slp, nam, &md, &dpos, &dirp,
2678 td, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
984263bc 2679 if (dirp) {
fad57d0e 2680 if (v3)
3b568787 2681 dirfor_ret = VOP_GETATTR(dirp, &dirfor, td);
984263bc
MD
2682 }
2683 if (error) {
2684 nfsm_reply(NFSX_WCCDATA(v3));
2685 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2686 error = 0;
2687 goto nfsmout;
2688 }
984263bc
MD
2689 if (vp->v_type != VDIR) {
2690 error = ENOTDIR;
2691 goto out;
2692 }
fad57d0e 2693
984263bc
MD
2694 /*
2695 * The root of a mounted filesystem cannot be deleted.
2696 */
2697 if (vp->v_flag & VROOT)
2698 error = EBUSY;
2699out:
2700 /*
2701 * Issue or abort op. Since SAVESTART is not set, path name
2702 * component is freed by the VOP after either.
2703 */
2704 if (!error) {
fad57d0e
MD
2705 vput(vp);
2706 vp = NULL;
2707 error = VOP_NRMDIR(nd.nl_ncp, nd.nl_cred);
984263bc 2708 }
fad57d0e 2709 nlookup_done(&nd);
984263bc
MD
2710
2711 if (dirp)
3b568787 2712 diraft_ret = VOP_GETATTR(dirp, &diraft, td);
984263bc
MD
2713 nfsm_reply(NFSX_WCCDATA(v3));
2714 if (v3) {
2715 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2716 error = 0;
2717 }
2718 /* fall through */
2719
2720nfsmout:
fad57d0e 2721 nlookup_done(&nd);
984263bc
MD
2722 if (dirp)
2723 vrele(dirp);
fad57d0e
MD
2724 if (vp)
2725 vput(vp);
984263bc
MD
2726 return(error);
2727}
2728
2729/*
2730 * nfs readdir service
2731 * - mallocs what it thinks is enough to read
2732 * count rounded up to a multiple of NFS_DIRBLKSIZ <= NFS_MAXREADDIR
2733 * - calls VOP_READDIR()
2734 * - loops around building the reply
2735 * if the output generated exceeds count break out of loop
2736 * The nfsm_clget macro is used here so that the reply will be packed
2737 * tightly in mbuf clusters.
2738 * - it only knows that it has encountered eof when the VOP_READDIR()
2739 * reads nothing
2740 * - as such one readdir rpc will return eof false although you are there
2741 * and then the next will return eof
2742 * - it trims out records with d_fileno == 0
2743 * this doesn't matter for Unix clients, but they might confuse clients
2744 * for other os'.
2745 * NB: It is tempting to set eof to true if the VOP_READDIR() reads less
2746 * than requested, but this may not apply to all filesystems. For
2747 * example, client NFS does not { although it is never remote mounted
2748 * anyhow }
2749 * The alternate call nfsrv_readdirplus() does lookups as well.
2750 * PS: The NFS protocol spec. does not clarify what the "count" byte
2751 * argument is a count of.. just name strings and file id's or the
2752 * entire reply rpc or ...
2753 * I tried just file name and id sizes and it confused the Sun client,
2754 * so I am using the full rpc size now. The "paranoia.." comment refers
2755 * to including the status longwords that are not a part of the dir.
2756 * "entry" structures, but are in the rpc.
2757 */
2758struct flrep {
2759 nfsuint64 fl_off;
2760 u_int32_t fl_postopok;
2761 u_int32_t fl_fattr[NFSX_V3FATTR / sizeof (u_int32_t)];
2762 u_int32_t fl_fhok;
2763 u_int32_t fl_fhsize;
2764 u_int32_t fl_nfh[NFSX_V3FH / sizeof (u_int32_t)];
2765};
2766
2767int
e851b29e
CP
2768nfsrv_readdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
2769 struct thread *td, struct mbuf **mrq)
984263bc
MD
2770{
2771 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2772 struct sockaddr *nam = nfsd->nd_nam;
2773 caddr_t dpos = nfsd->nd_dpos;
2774 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
2775 char *bp, *be;
2776 struct mbuf *mp;
2777 struct dirent *dp;
2778 caddr_t cp;
2779 u_int32_t *tl;
2780 int32_t t1;
984263bc
MD
2781 caddr_t bpos;
2782 struct mbuf *mb, *mb2, *mreq, *mp2;
2783 char *cpos, *cend, *cp2, *rbuf;
2784 struct vnode *vp = NULL;
2785 struct vattr at;
2786 nfsfh_t nfh;
2787 fhandle_t *fhp;
2788 struct uio io;
2789 struct iovec iv;
2790 int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
e07fef60 2791 int siz, cnt, fullsiz, eofflag, rdonly, ncookies;
984263bc 2792 int v3 = (nfsd->nd_flag & ND_NFSV3);
e07fef60 2793 u_quad_t off, toff, verf;
984263bc
MD
2794 u_long *cookies = NULL, *cookiep; /* needs to be int64_t or off_t */
2795
2796 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
2797 fhp = &nfh.fh_generic;
2798 nfsm_srvmtofh(fhp);
2799 if (v3) {
2800 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2801 toff = fxdr_hyper(tl);
2802 tl += 2;
2803 verf = fxdr_hyper(tl);
2804 tl += 2;
2805 } else {
2806 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2807 toff = fxdr_unsigned(u_quad_t, *tl++);
2808 verf = 0; /* shut up gcc */
2809 }
2810 off = toff;
2811 cnt = fxdr_unsigned(int, *tl);
2812 siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
2813 xfer = NFS_SRVMAXDATA(nfsd);
2814 if (cnt > xfer)
2815 cnt = xfer;
2816 if (siz > xfer)
2817 siz = xfer;
2818 fullsiz = siz;
2819 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
2820 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
2821 if (!error && vp->v_type != VDIR) {
2822 error = ENOTDIR;
2823 vput(vp);
2824 vp = NULL;
2825 }
2826 if (error) {
2827 nfsm_reply(NFSX_UNSIGNED);
2828 nfsm_srvpostop_attr(getret, &at);
2829 error = 0;
2830 goto nfsmout;
2831 }
2832
2833 /*
2834 * Obtain lock on vnode for this section of the code
2835 */
2836
984263bc 2837 if (v3) {
3b568787 2838 error = getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
2839#if 0
2840 /*
2841 * XXX This check may be too strict for Solaris 2.5 clients.
2842 */
2843 if (!error && toff && verf && verf != at.va_filerev)
2844 error = NFSERR_BAD_COOKIE;
2845#endif
2846 }
2847 if (!error)
dadab5e9 2848 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 0);
984263bc
MD
2849 if (error) {
2850 vput(vp);
2851 vp = NULL;
2852 nfsm_reply(NFSX_POSTOPATTR(v3));
2853 nfsm_srvpostop_attr(getret, &at);
2854 error = 0;
2855 goto nfsmout;
2856 }
5fd012e0 2857 VOP_UNLOCK(vp, 0, td);
984263bc
MD
2858
2859 /*
2860 * end section. Allocate rbuf and continue
2861 */
2862 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
2863again:
2864 iv.iov_base = rbuf;
2865 iv.iov_len = fullsiz;
2866 io.uio_iov = &iv;
2867 io.uio_iovcnt = 1;
2868 io.uio_offset = (off_t)off;
2869 io.uio_resid = fullsiz;
2870 io.uio_segflg = UIO_SYSSPACE;
2871 io.uio_rw = UIO_READ;
dadab5e9 2872 io.uio_td = NULL;
984263bc 2873 eofflag = 0;
5fd012e0 2874 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
984263bc
MD
2875 if (cookies) {
2876 free((caddr_t)cookies, M_TEMP);
2877 cookies = NULL;
2878 }
2879 error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
2880 off = (off_t)io.uio_offset;
2881 if (!cookies && !error)
2882 error = NFSERR_PERM;
2883 if (v3) {
3b568787 2884 getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
2885 if (!error)
2886 error = getret;
2887 }
5fd012e0 2888 VOP_UNLOCK(vp, 0, td);
984263bc
MD
2889 if (error) {
2890 vrele(vp);
2891 vp = NULL;
2892 free((caddr_t)rbuf, M_TEMP);
2893 if (cookies)
2894 free((caddr_t)cookies, M_TEMP);
2895 nfsm_reply(NFSX_POSTOPATTR(v3));
2896 nfsm_srvpostop_attr(getret, &at);
2897 error = 0;
2898 goto nfsmout;
2899 }
2900 if (io.uio_resid) {
2901 siz -= io.uio_resid;
2902
2903 /*
2904 * If nothing read, return eof
2905 * rpc reply
2906 */
2907 if (siz == 0) {
2908 vrele(vp);
2909 vp = NULL;
2910 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) +
2911 2 * NFSX_UNSIGNED);
2912 if (v3) {
2913 nfsm_srvpostop_attr(getret, &at);
2914 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2915 txdr_hyper(at.va_filerev, tl);
2916 tl += 2;
2917 } else
2918 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2919 *tl++ = nfs_false;
2920 *tl = nfs_true;
2921 FREE((caddr_t)rbuf, M_TEMP);
2922 FREE((caddr_t)cookies, M_TEMP);
2923 error = 0;
2924 goto nfsmout;
2925 }
2926 }
2927
2928 /*
2929 * Check for degenerate cases of nothing useful read.
2930 * If so go try again
2931 */
2932 cpos = rbuf;
2933 cend = rbuf + siz;
2934 dp = (struct dirent *)cpos;
2935 cookiep = cookies;
2936 /*
2937 * For some reason FreeBSD's ufs_readdir() chooses to back the
2938 * directory offset up to a block boundary, so it is necessary to
2939 * skip over the records that preceed the requested offset. This
2940 * requires the assumption that file offset cookies monotonically
2941 * increase.
2942 */
2943 while (cpos < cend && ncookies > 0 &&
01f31ab3 2944 (dp->d_ino == 0 || dp->d_type == DT_WHT ||
984263bc 2945 ((u_quad_t)(*cookiep)) <= toff)) {
01f31ab3
JS
2946 dp = _DIRENT_NEXT(dp);
2947 cpos = (char *)dp;
984263bc
MD
2948 cookiep++;
2949 ncookies--;
2950 }
2951 if (cpos >= cend || ncookies == 0) {
2952 toff = off;
2953 siz = fullsiz;
2954 goto again;
2955 }
2956
2957 len = 3 * NFSX_UNSIGNED; /* paranoia, probably can be 0 */
2958 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) + siz);
2959 if (v3) {
2960 nfsm_srvpostop_attr(getret, &at);
2961 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2962 txdr_hyper(at.va_filerev, tl);
2963 }
2964 mp = mp2 = mb;
2965 bp = bpos;
2966 be = bp + M_TRAILINGSPACE(mp);
2967
2968 /* Loop through the records and build reply */
2969 while (cpos < cend && ncookies > 0) {
01f31ab3 2970 if (dp->d_ino != 0 && dp->d_type != DT_WHT) {
984263bc
MD
2971 nlen = dp->d_namlen;
2972 rem = nfsm_rndup(nlen) - nlen;
2973 len += (4 * NFSX_UNSIGNED + nlen + rem);
2974 if (v3)
2975 len += 2 * NFSX_UNSIGNED;
2976 if (len > cnt) {
2977 eofflag = 0;
2978 break;
2979 }
2980 /*
2981 * Build the directory record xdr from
2982 * the dirent entry.
2983 */
2984 nfsm_clget;
2985 *tl = nfs_true;
2986 bp += NFSX_UNSIGNED;
2987 if (v3) {
2988 nfsm_clget;
2989 *tl = 0;
2990 bp += NFSX_UNSIGNED;
2991 }
2992 nfsm_clget;
01f31ab3 2993 *tl = txdr_unsigned(dp->d_ino);
984263bc
MD
2994 bp += NFSX_UNSIGNED;
2995 nfsm_clget;
2996 *tl = txdr_unsigned(nlen);
2997 bp += NFSX_UNSIGNED;
2998
2999 /* And loop around copying the name */
3000 xfer = nlen;
3001 cp = dp->d_name;
3002 while (xfer > 0) {
3003 nfsm_clget;
3004 if ((bp+xfer) > be)
3005 tsiz = be-bp;
3006 else
3007 tsiz = xfer;
3008 bcopy(cp, bp, tsiz);
3009 bp += tsiz;
3010 xfer -= tsiz;
3011 if (xfer > 0)
3012 cp += tsiz;
3013 }
3014 /* And null pad to a int32_t boundary */
3015 for (i = 0; i < rem; i++)
3016 *bp++ = '\0';
3017 nfsm_clget;
3018
3019 /* Finish off the record */
3020 if (v3) {
3021 *tl = 0;
3022 bp += NFSX_UNSIGNED;
3023 nfsm_clget;
3024 }
3025 *tl = txdr_unsigned(*cookiep);
3026 bp += NFSX_UNSIGNED;
3027 }
01f31ab3
JS
3028 dp = _DIRENT_NEXT(dp);
3029 cpos = (char *)dp;
984263bc
MD
3030 cookiep++;
3031 ncookies--;
3032 }
3033 vrele(vp);
3034 vp = NULL;
3035 nfsm_clget;
3036 *tl = nfs_false;
3037 bp += NFSX_UNSIGNED;
3038 nfsm_clget;
3039 if (eofflag)
3040 *tl = nfs_true;
3041 else
3042 *tl = nfs_false;
3043 bp += NFSX_UNSIGNED;
3044 if (mp != mb) {
3045 if (bp < be)
3046 mp->m_len = bp - mtod(mp, caddr_t);
3047 } else
3048 mp->m_len += bp - bpos;
3049 FREE((caddr_t)rbuf, M_TEMP);
3050 FREE((caddr_t)cookies, M_TEMP);
3051
3052nfsmout:
3053 if (vp)
3054 vrele(vp);
3055 return(error);
3056}
3057
3058int
e851b29e
CP
3059nfsrv_readdirplus(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3060 struct thread *td, struct mbuf **mrq)
984263bc
MD
3061{
3062 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3063 struct sockaddr *nam = nfsd->nd_nam;
3064 caddr_t dpos = nfsd->nd_dpos;
3065 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3066 char *bp, *be;
3067 struct mbuf *mp;
3068 struct dirent *dp;
3069 caddr_t cp;
3070 u_int32_t *tl;
3071 int32_t t1;
984263bc
MD
3072 caddr_t bpos;
3073 struct mbuf *mb, *mb2, *mreq, *mp2;
3074 char *cpos, *cend, *cp2, *rbuf;
3075 struct vnode *vp = NULL, *nvp;
3076 struct flrep fl;
3077 nfsfh_t nfh;
3078 fhandle_t *fhp, *nfhp = (fhandle_t *)fl.fl_nfh;
3079 struct uio io;
3080 struct iovec iv;
3081 struct vattr va, at, *vap = &va;
3082 struct nfs_fattr *fp;
3083 int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
e07fef60
MD
3084 int siz, cnt, fullsiz, eofflag, rdonly, dirlen, ncookies;
3085 u_quad_t off, toff, verf;
984263bc
MD
3086 u_long *cookies = NULL, *cookiep; /* needs to be int64_t or off_t */
3087
3088 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
3089 fhp = &nfh.fh_generic;
3090 nfsm_srvmtofh(fhp);
3091 nfsm_dissect(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
3092 toff = fxdr_hyper(tl);
3093 tl += 2;
3094 verf = fxdr_hyper(tl);
3095 tl += 2;
3096 siz = fxdr_unsigned(int, *tl++);
3097 cnt = fxdr_unsigned(int, *tl);
3098 off = toff;
3099 siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
3100 xfer = NFS_SRVMAXDATA(nfsd);
3101 if (cnt > xfer)
3102 cnt = xfer;
3103 if (siz > xfer)
3104 siz = xfer;
3105 fullsiz = siz;
3106 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3107 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3108 if (!error && vp->v_type != VDIR) {
3109 error = ENOTDIR;
3110 vput(vp);
3111 vp = NULL;
3112 }
3113 if (error) {
3114 nfsm_reply(NFSX_UNSIGNED);
3115 nfsm_srvpostop_attr(getret, &at);
3116 error = 0;
3117 goto nfsmout;
3118 }
3b568787 3119 error = getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
3120#if 0
3121 /*
3122 * XXX This check may be too strict for Solaris 2.5 clients.
3123 */
3124 if (!error && toff && verf && verf != at.va_filerev)
3125 error = NFSERR_BAD_COOKIE;
3126#endif
3127 if (!error) {
dadab5e9 3128 error = nfsrv_access(vp, VEXEC, cred, rdonly, td, 0);
984263bc
MD
3129 }
3130 if (error) {
3131 vput(vp);
3132 vp = NULL;
3133 nfsm_reply(NFSX_V3POSTOPATTR);
3134 nfsm_srvpostop_attr(getret, &at);
3135 error = 0;
3136 goto nfsmout;
3137 }
5fd012e0 3138 VOP_UNLOCK(vp, 0, td);
984263bc
MD
3139 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
3140again:
3141 iv.iov_base = rbuf;
3142 iv.iov_len = fullsiz;
3143 io.uio_iov = &iv;
3144 io.uio_iovcnt = 1;
3145 io.uio_offset = (off_t)off;
3146 io.uio_resid = fullsiz;
3147 io.uio_segflg = UIO_SYSSPACE;
3148 io.uio_rw = UIO_READ;
dadab5e9 3149 io.uio_td = NULL;
984263bc 3150 eofflag = 0;
5fd012e0 3151 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
984263bc
MD
3152 if (cookies) {
3153 free((caddr_t)cookies, M_TEMP);
3154 cookies = NULL;
3155 }
3156 error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
3157 off = (u_quad_t)io.uio_offset;
3b568787 3158 getret = VOP_GETATTR(vp, &at, td);
5fd012e0 3159 VOP_UNLOCK(vp, 0, td);
984263bc
MD
3160 if (!cookies && !error)
3161 error = NFSERR_PERM;
3162 if (!error)
3163 error = getret;
3164 if (error) {
3165 vrele(vp);
3166 vp = NULL;
3167 if (cookies)
3168 free((caddr_t)cookies, M_TEMP);
3169 free((caddr_t)rbuf, M_TEMP);
3170 nfsm_reply(NFSX_V3POSTOPATTR);
3171 nfsm_srvpostop_attr(getret, &at);
3172 error = 0;
3173 goto nfsmout;
3174 }
3175 if (io.uio_resid) {
3176 siz -= io.uio_resid;
3177
3178 /*
3179 * If nothing read, return eof
3180 * rpc reply
3181 */
3182 if (siz == 0) {
3183 vrele(vp);
3184 vp = NULL;
3185 nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF +
3186 2 * NFSX_UNSIGNED);
3187 nfsm_srvpostop_attr(getret, &at);
3188 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
3189 txdr_hyper(at.va_filerev, tl);
3190 tl += 2;
3191 *tl++ = nfs_false;
3192 *tl = nfs_true;
3193 FREE((caddr_t)cookies, M_TEMP);
3194 FREE((caddr_t)rbuf, M_TEMP);
3195 error = 0;
3196 goto nfsmout;
3197 }
3198 }
3199
3200 /*
3201 * Check for degenerate cases of nothing useful read.
3202 * If so go try again
3203 */
3204 cpos = rbuf;
3205 cend = rbuf + siz;
3206 dp = (struct dirent *)cpos;
3207 cookiep = cookies;
3208 /*
3209 * For some reason FreeBSD's ufs_readdir() chooses to back the
3210 * directory offset up to a block boundary, so it is necessary to
3211 * skip over the records that preceed the requested offset. This
3212 * requires the assumption that file offset cookies monotonically
3213 * increase.
3214 */
3215 while (cpos < cend && ncookies > 0 &&
01f31ab3 3216 (dp->d_ino == 0 || dp->d_type == DT_WHT ||
984263bc 3217 ((u_quad_t)(*cookiep)) <= toff)) {
01f31ab3
JS
3218 dp = _DIRENT_NEXT(dp);
3219 cpos = (char *)dp;
984263bc
MD
3220 cookiep++;
3221 ncookies--;
3222 }
3223 if (cpos >= cend || ncookies == 0) {
3224 toff = off;
3225 siz = fullsiz;
3226 goto again;
3227 }
3228
3229 /*
3230 * Probe one of the directory entries to see if the filesystem
3231 * supports VGET.
3232 */
01f31ab3 3233 if (VFS_VGET(vp->v_mount, dp->d_ino, &nvp) == EOPNOTSUPP) {
984263bc
MD
3234 error = NFSERR_NOTSUPP;
3235 vrele(vp);
3236 vp = NULL;
3237 free((caddr_t)cookies, M_TEMP);
3238 free((caddr_t)rbuf, M_TEMP);
3239 nfsm_reply(NFSX_V3POSTOPATTR);
3240 nfsm_srvpostop_attr(getret, &at);
3241 error = 0;
3242 goto nfsmout;
3243 }
3187253f
MD
3244 if (nvp) {
3245 vput(nvp);
3246 nvp = NULL;
3247 }
984263bc
MD
3248
3249 dirlen = len = NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF + 2 * NFSX_UNSIGNED;
3250 nfsm_reply(cnt);
3251 nfsm_srvpostop_attr(getret, &at);
3252 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3253 txdr_hyper(at.va_filerev, tl);
3254 mp = mp2 = mb;
3255 bp = bpos;
3256 be = bp + M_TRAILINGSPACE(mp);
3257
3258 /* Loop through the records and build reply */
3259 while (cpos < cend && ncookies > 0) {
01f31ab3 3260 if (dp->d_ino != 0 && dp->d_type != DT_WHT) {
984263bc
MD
3261 nlen = dp->d_namlen;
3262 rem = nfsm_rndup(nlen)-nlen;
3263
3264 /*
3265 * For readdir_and_lookup get the vnode using
3266 * the file number.
3267 */
01f31ab3 3268 if (VFS_VGET(vp->v_mount, dp->d_ino, &nvp))
984263bc
MD
3269 goto invalid;
3270 bzero((caddr_t)nfhp, NFSX_V3FH);
3271 nfhp->fh_fsid =
3272 nvp->v_mount->mnt_stat.f_fsid;
3273 if (VFS_VPTOFH(nvp, &nfhp->fh_fid)) {
3274 vput(nvp);
3275 nvp = NULL;
3276 goto invalid;
3277 }
3b568787 3278 if (VOP_GETATTR(nvp, vap, td)) {
984263bc
MD
3279 vput(nvp);
3280 nvp = NULL;
3281 goto invalid;
3282 }
3283 vput(nvp);
3284 nvp = NULL;
3285
3286 /*
3287 * If either the dircount or maxcount will be
3288 * exceeded, get out now. Both of these lengths
3289 * are calculated conservatively, including all
3290 * XDR overheads.
3291 */
3292 len += (8 * NFSX_UNSIGNED + nlen + rem + NFSX_V3FH +
3293 NFSX_V3POSTOPATTR);
3294 dirlen += (6 * NFSX_UNSIGNED + nlen + rem);
3295 if (len > cnt || dirlen > fullsiz) {
3296 eofflag = 0;
3297 break;
3298 }
3299
3300 /*
3301 * Build the directory record xdr from
3302 * the dirent entry.
3303 */
3304 fp = (struct nfs_fattr *)&fl.fl_fattr;
3305 nfsm_srvfillattr(vap, fp);
3306 fl.fl_fhsize = txdr_unsigned(NFSX_V3FH);
3307 fl.fl_fhok = nfs_true;
3308 fl.fl_postopok = nfs_true;
3309 fl.fl_off.nfsuquad[0] = 0;
3310 fl.fl_off.nfsuquad[1] = txdr_unsigned(*cookiep);
3311
3312 nfsm_clget;
3313 *tl = nfs_true;
3314 bp += NFSX_UNSIGNED;
3315 nfsm_clget;
3316 *tl = 0;
3317 bp += NFSX_UNSIGNED;
3318 nfsm_clget;
01f31ab3 3319 *tl = txdr_unsigned(dp->d_ino);
984263bc
MD
3320 bp += NFSX_UNSIGNED;
3321 nfsm_clget;
3322 *tl = txdr_unsigned(nlen);
3323 bp += NFSX_UNSIGNED;
3324
3325 /* And loop around copying the name */
3326 xfer = nlen;
3327 cp = dp->d_name;
3328 while (xfer > 0) {
3329 nfsm_clget;
3330 if ((bp + xfer) > be)
3331 tsiz = be - bp;
3332 else
3333 tsiz = xfer;
3334 bcopy(cp, bp, tsiz);
3335 bp += tsiz;
3336 xfer -= tsiz;
3337 if (xfer > 0)
3338 cp += tsiz;
3339 }
3340 /* And null pad to a int32_t boundary */
3341 for (i = 0; i < rem; i++)
3342 *bp++ = '\0';
3343
3344 /*
3345 * Now copy the flrep structure out.
3346 */
3347 xfer = sizeof (struct flrep);
3348 cp = (caddr_t)&fl;
3349 while (xfer > 0) {
3350 nfsm_clget;
3351 if ((bp + xfer) > be)
3352 tsiz = be - bp;
3353 else
3354 tsiz = xfer;
3355 bcopy(cp, bp, tsiz);
3356 bp += tsiz;
3357 xfer -= tsiz;
3358 if (xfer > 0)
3359 cp += tsiz;
3360 }
3361 }
3362invalid:
01f31ab3
JS
3363 dp = _DIRENT_NEXT(dp);
3364 cpos = (char *)dp;
984263bc
MD
3365 cookiep++;
3366 ncookies--;
3367 }
3368 vrele(vp);
3369 vp = NULL;
3370 nfsm_clget;
3371 *tl = nfs_false;
3372 bp += NFSX_UNSIGNED;
3373 nfsm_clget;
3374 if (eofflag)
3375 *tl = nfs_true;
3376 else
3377 *tl = nfs_false;
3378 bp += NFSX_UNSIGNED;
3379 if (mp != mb) {
3380 if (bp < be)
3381 mp->m_len = bp - mtod(mp, caddr_t);
3382 } else
3383 mp->m_len += bp - bpos;
3384 FREE((caddr_t)cookies, M_TEMP);
3385 FREE((caddr_t)rbuf, M_TEMP);
3386nfsmout:
3387 if (vp)
3388 vrele(vp);
3389 return(error);
3390}
3391
3392/*
3393 * nfs commit service
3394 */
3395int
e851b29e
CP
3396nfsrv_commit(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3397 struct thread *td, struct mbuf **mrq)
984263bc
MD
3398{
3399 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3400 struct sockaddr *nam = nfsd->nd_nam;
3401 caddr_t dpos = nfsd->nd_dpos;
3402 struct ucred *cred = &nfsd->nd_cr;
3403 struct vattr bfor, aft;
3404 struct vnode *vp = NULL;
3405 nfsfh_t nfh;
3406 fhandle_t *fhp;
dadab5e9
MD
3407 u_int32_t *tl;
3408 int32_t t1;
984263bc 3409 caddr_t bpos;
e07fef60 3410 int error = 0, rdonly, for_ret = 1, aft_ret = 1, cnt;
984263bc
MD
3411 char *cp2;
3412 struct mbuf *mb, *mb2, *mreq;
e07fef60 3413 u_quad_t off;
984263bc
MD
3414
3415 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
984263bc
MD
3416 fhp = &nfh.fh_generic;
3417 nfsm_srvmtofh(fhp);
3418 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3419
3420 /*
3421 * XXX At this time VOP_FSYNC() does not accept offset and byte
3422 * count parameters, so these arguments are useless (someday maybe).
3423 */
3424 off = fxdr_hyper(tl);
3425 tl += 2;
3426 cnt = fxdr_unsigned(int, *tl);
3427 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3428 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3429 if (error) {
3430 nfsm_reply(2 * NFSX_UNSIGNED);
3431 nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
3432 error = 0;
3433 goto nfsmout;
3434 }
3b568787 3435 for_ret = VOP_GETATTR(vp, &bfor, td);
984263bc
MD
3436
3437 if (cnt > MAX_COMMIT_COUNT) {
3438 /*
3439 * Give up and do the whole thing
3440 */
3441 if (vp->v_object &&
3442 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
3443 vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC);
3444 }
3b568787 3445 error = VOP_FSYNC(vp, MNT_WAIT, td);
984263bc
MD
3446 } else {
3447 /*
3448 * Locate and synchronously write any buffers that fall
3449 * into the requested range. Note: we are assuming that
3450 * f_iosize is a power of 2.
3451 */
3452 int iosize = vp->v_mount->mnt_stat.f_iosize;
3453 int iomask = iosize - 1;
54078292 3454 off_t loffset;
984263bc
MD
3455
3456 /*
3457 * Align to iosize boundry, super-align to page boundry.
3458 */
3459 if (off & iomask) {
3460 cnt += off & iomask;
3461 off &= ~(u_quad_t)iomask;
3462 }
3463 if (off & PAGE_MASK) {
3464 cnt += off & PAGE_MASK;
3465 off &= ~(u_quad_t)PAGE_MASK;
3466 }
54078292 3467 loffset = off;
984263bc
MD
3468
3469 if (vp->v_object &&
3470 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
3471 vm_object_page_clean(vp->v_object, off / PAGE_SIZE, (cnt + PAGE_MASK) / PAGE_SIZE, OBJPC_SYNC);
3472 }
3473
165dba55 3474 crit_enter();
984263bc
MD
3475 while (cnt > 0) {
3476 struct buf *bp;
3477
3478 /*
3479 * If we have a buffer and it is marked B_DELWRI we
3480 * have to lock and write it. Otherwise the prior
3481 * write is assumed to have already been committed.
3482 */
54078292 3483 if ((bp = findblk(vp, loffset)) != NULL && (bp->b_flags & B_DELWRI)) {
984263bc 3484 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT)) {
1f1ea522
MD
3485 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL) == 0)
3486 BUF_UNLOCK(bp);
984263bc
MD
3487 continue; /* retry */
3488 }
3489 bremfree(bp);
3490 bp->b_flags &= ~B_ASYNC;
3491 VOP_BWRITE(bp->b_vp, bp);
3492 ++nfs_commit_miss;
3493 }
3494 ++nfs_commit_blks;
3495 if (cnt < iosize)
3496 break;
3497 cnt -= iosize;
54078292 3498 loffset += iosize;
984263bc 3499 }
165dba55 3500 crit_exit();
984263bc
MD
3501 }
3502
3b568787 3503 aft_ret = VOP_GETATTR(vp, &aft, td);
984263bc
MD
3504 vput(vp);
3505 vp = NULL;
3506 nfsm_reply(NFSX_V3WCCDATA + NFSX_V3WRITEVERF);
3507 nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
3508 if (!error) {
3509 nfsm_build(tl, u_int32_t *, NFSX_V3WRITEVERF);
3510 if (nfsver.tv_sec == 0)
3511 nfsver = boottime;
3512 *tl++ = txdr_unsigned(nfsver.tv_sec);
3a6f9faf 3513 *tl = txdr_unsigned(nfsver.tv_nsec / 1000);
984263bc
MD
3514 } else {
3515 error = 0;
3516 }
3517nfsmout:
3518 if (vp)
3519 vput(vp);
3520 return(error);
3521}
3522
3523/*
3524 * nfs statfs service
3525 */
3526int
e851b29e
CP
3527nfsrv_statfs(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3528 struct thread *td, struct mbuf **mrq)
984263bc
MD
3529{
3530 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3531 struct sockaddr *nam = nfsd->nd_nam;
3532 caddr_t dpos = nfsd->nd_dpos;
3533 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3534 struct statfs *sf;
3535 struct nfs_statfs *sfp;
3536 u_int32_t *tl;
3537 int32_t t1;
984263bc 3538 caddr_t bpos;
e07fef60 3539 int error = 0, rdonly, getret = 1;
984263bc
MD
3540 int v3 = (nfsd->nd_flag & ND_NFSV3);
3541 char *cp2;
3542 struct mbuf *mb, *mb2, *mreq;
3543 struct vnode *vp = NULL;
3544 struct vattr at;
3545 nfsfh_t nfh;
3546 fhandle_t *fhp;
3547 struct statfs statfs;
e07fef60 3548 u_quad_t tval;
984263bc
MD
3549
3550 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
984263bc
MD
3551 fhp = &nfh.fh_generic;
3552 nfsm_srvmtofh(fhp);
3553 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3554 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3555 if (error) {
3556 nfsm_reply(NFSX_UNSIGNED);
3557 nfsm_srvpostop_attr(getret, &at);
3558 error = 0;
3559 goto nfsmout;
3560 }
3561 sf = &statfs;
dadab5e9 3562 error = VFS_STATFS(vp->v_mount, sf, td);
3b568787 3563 getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
3564 vput(vp);
3565 vp = NULL;
3566 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_STATFS(v3));
3567 if (v3)
3568 nfsm_srvpostop_attr(getret, &at);
3569 if (error) {
3570 error = 0;
3571 goto nfsmout;
3572 }
3573 nfsm_build(sfp, struct nfs_statfs *, NFSX_STATFS(v3));
3574 if (v3) {
3575 tval = (u_quad_t)sf->f_blocks;
3576 tval *= (u_quad_t)sf->f_bsize;
3577 txdr_hyper(tval, &sfp->sf_tbytes);
3578 tval = (u_quad_t)sf->f_bfree;
3579 tval *= (u_quad_t)sf->f_bsize;
3580 txdr_hyper(tval, &sfp->sf_fbytes);
3581 tval = (u_quad_t)sf->f_bavail;
3582 tval *= (u_quad_t)sf->f_bsize;
3583 txdr_hyper(tval, &sfp->sf_abytes);
3584 sfp->sf_tfiles.nfsuquad[0] = 0;
3585 sfp->sf_tfiles.nfsuquad[1] = txdr_unsigned(sf->f_files);
3586 sfp->sf_ffiles.nfsuquad[0] = 0;
3587 sfp->sf_ffiles.nfsuquad[1] = txdr_unsigned(sf->f_ffree);
3588 sfp->sf_afiles.nfsuquad[0] = 0;
3589 sfp->sf_afiles.nfsuquad[1] = txdr_unsigned(sf->f_ffree);
3590 sfp->sf_invarsec = 0;
3591 } else {
3592 sfp->sf_tsize = txdr_unsigned(NFS_MAXDGRAMDATA);
3593 sfp->sf_bsize = txdr_unsigned(sf->f_bsize);
3594 sfp->sf_blocks = txdr_unsigned(sf->f_blocks);
3595 sfp->sf_bfree = txdr_unsigned(sf->f_bfree);
3596 sfp->sf_bavail = txdr_unsigned(sf->f_bavail);
3597 }
3598nfsmout:
3599 if (vp)
3600 vput(vp);
3601 return(error);
3602}
3603
3604/*
3605 * nfs fsinfo service
3606 */
3607int
e851b29e
CP
3608nfsrv_fsinfo(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
3609 struct thread *td, struct mbuf **mrq)
984263bc
MD
3610{
3611 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3612 struct sockaddr *nam = nfsd->nd_nam;
3613 caddr_t dpos = nfsd->nd_dpos;
3614 struct ucred *cred = &nfsd->nd_cr;
dadab5e9
MD
3615 u_int32_t *tl;
3616 struct nfsv3_fsinfo *sip;
3617 int32_t t1;
984263bc 3618 caddr_t bpos;
e07fef60 3619 int error = 0, rdonly, getret = 1, pref;
984263bc
MD
3620 char *cp2;
3621 struct mbuf *mb, *mb2, *mreq;
3622 struct vnode *vp = NULL;
3623 struct vattr at;
3624 nfsfh_t nfh;
3625 fhandle_t *fhp;
e07fef60 3626 u_quad_t maxfsize;
984263bc
MD
3627 struct statfs sb;
3628
3629 nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
984263bc
MD
3630 fhp = &nfh.fh_generic;
3631 nfsm_srvmtofh(fhp);
3632 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3633 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3634 if (error) {
3635 nfsm_reply(NFSX_UNSIGNED);
3636 nfsm_srvpostop_attr(getret, &at);
3637 error = 0;
3638 goto nfsmout;
3639 }
3640
3641 /* XXX Try to make a guess on the max file size. */
dadab5e9 3642 VFS_STATFS(vp->v_mount, &sb, td);
984263bc
MD
3643 maxfsize = (u_quad_t)0x80000000 * sb.f_bsize - 1;
3644
3b568787 3645 getret = VOP_GETATTR(vp, &at, td);
984263bc
MD
3646 vput(vp);
3647 vp = NULL;
3648 nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3FSINFO);
3649 nfsm_srvpostop_attr(getret, &at);
3650 nfsm_build(sip, struct nfsv3_fsinfo *, NFSX_V3FSINFO);
3651
3652 /*
3653 * XXX
3654 * There should be file system VFS OP(s) to get this information.
3655 * For now, assume ufs.
3656 */
3657 if (slp->ns_so->so_type == SOCK_DGRAM)
3658 pref = NFS_MAXDGRAMDATA;
3659 else
3660 pref = NFS_MAXDATA;
3661 sip->fs_rtmax = txdr_unsigned(NFS_MAXDATA);
3662 sip->fs_rtpref = txdr_unsigned(pref);
3663 sip->fs_rtmult = txdr_unsigned(NFS_FABLKSIZE);
3664 sip->fs_wtmax = txdr_unsigned(NFS_MAXDATA);
3665 sip->fs_wtpref = txdr_unsigned(pref);
3666 sip->fs_wtmult = txdr_unsigned(NFS_FABLKSIZE);
3667 sip->fs_dtpref = txdr_unsigned(pref);
3668 txdr_hyper(maxfsize, &sip->fs_maxfilesize);
3669 sip->fs_timedelta.nfsv3_sec = 0;
3670 sip->fs_timedelta.nfsv3_nsec = txdr_unsigned(1);
3671 sip->fs_properties = txdr_unsigned(NFSV3FSINFO_LINK |
3672 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
3673 NFSV3FSINFO_CANSETTIME);
3674nfsmout:
3675 if (vp)
3676 vput(vp);
3677 return(error);
3678}
3679
3680/*
3681 * nfs pathconf service