2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
36 * @(#)nfs_serv.c 8.8 (Berkeley) 7/31/95
37 * $Id: nfs_serv.c,v 1.68 1998/05/31 20:08:52 peter Exp $
41 * nfs version 2 and 3 server calls to vnode ops
42 * - these routines generally have 3 phases
43 * 1 - break down and validate rpc request in mbuf list
44 * 2 - do the vnode ops for the request
45 * (surprisingly ?? many are very similar to syscalls in vfs_syscalls.c)
46 * 3 - build the rpc reply in an mbuf list
48 * - do not mix the phases, since the nfsm_?? macros can return failures
49 * on a bad rpc or similar and do not do any vrele() or vput()'s
51 * - the nfsm_reply() macro generates an nfs rpc reply with the nfs
52 * error number iff error != 0 whereas
53 * returning an error from the server function implies a fatal error
54 * such as a badly constructed rpc request that should be dropped without
56 * For Version 3, nfsm_reply() does not return for the error case, since
57 * most version 3 rpcs return more than the status for error cases.
60 #include <sys/param.h>
61 #include <sys/systm.h>
63 #include <sys/namei.h>
64 #include <sys/unistd.h>
65 #include <sys/vnode.h>
66 #include <sys/mount.h>
67 #include <sys/socket.h>
68 #include <sys/socketvar.h>
69 #include <sys/malloc.h>
71 #include <sys/dirent.h>
73 #include <sys/kernel.h>
74 #include <sys/sysctl.h>
77 #include <vm/vm_extern.h>
78 #include <vm/vm_zone.h>
79 #include <vm/vm_object.h>
81 #include <nfs/nfsproto.h>
82 #include <nfs/rpcv2.h>
84 #include <nfs/xdr_subs.h>
85 #include <nfs/nfsm_subs.h>
86 #include <nfs/nqnfs.h>
88 nfstype nfsv3_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK,
91 nfstype nfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON,
94 extern u_int32_t nfs_xdrneg1;
95 extern u_int32_t nfs_false, nfs_true;
96 extern enum vtype nv3tov_type[8];
97 extern struct nfsstats nfsstats;
99 int nfsrvw_procrastinate = NFS_GATHERDELAY * 1000;
100 int nfsrvw_procrastinate_v3 = 0;
102 static int nfs_async;
103 SYSCTL_INT(_vfs_nfs, OID_AUTO, async, CTLFLAG_RW, &nfs_async, 0, "");
105 static int nfsrv_access __P((struct vnode *,int,struct ucred *,int,
106 struct proc *, int));
107 static void nfsrvw_coalesce __P((struct nfsrv_descript *,
108 struct nfsrv_descript *));
111 * nfs v3 access service
114 nfsrv3_access(nfsd, slp, procp, mrq)
115 struct nfsrv_descript *nfsd;
116 struct nfssvc_sock *slp;
120 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
121 struct sockaddr *nam = nfsd->nd_nam;
122 caddr_t dpos = nfsd->nd_dpos;
123 struct ucred *cred = &nfsd->nd_cr;
127 register u_int32_t *tl;
130 int error = 0, rdonly, cache, getret;
132 struct mbuf *mb, *mreq, *mb2;
133 struct vattr vattr, *vap = &vattr;
134 u_long testmode, nfsmode;
140 fhp = &nfh.fh_generic;
142 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
143 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly,
144 (nfsd->nd_flag & ND_KERBAUTH), TRUE);
146 nfsm_reply(NFSX_UNSIGNED);
147 nfsm_srvpostop_attr(1, (struct vattr *)0);
150 nfsmode = fxdr_unsigned(u_int32_t, *tl);
151 if ((nfsmode & NFSV3ACCESS_READ) &&
152 nfsrv_access(vp, VREAD, cred, rdonly, procp, 0))
153 nfsmode &= ~NFSV3ACCESS_READ;
154 if (vp->v_type == VDIR)
155 testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND |
158 testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND);
159 if ((nfsmode & testmode) &&
160 nfsrv_access(vp, VWRITE, cred, rdonly, procp, 0))
161 nfsmode &= ~testmode;
162 if (vp->v_type == VDIR)
163 testmode = NFSV3ACCESS_LOOKUP;
165 testmode = NFSV3ACCESS_EXECUTE;
166 if ((nfsmode & testmode) &&
167 nfsrv_access(vp, VEXEC, cred, rdonly, procp, 0))
168 nfsmode &= ~testmode;
169 getret = VOP_GETATTR(vp, vap, cred, procp);
171 nfsm_reply(NFSX_POSTOPATTR(1) + NFSX_UNSIGNED);
172 nfsm_srvpostop_attr(getret, vap);
173 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
174 *tl = txdr_unsigned(nfsmode);
179 * nfs getattr service
182 nfsrv_getattr(nfsd, slp, procp, mrq)
183 struct nfsrv_descript *nfsd;
184 struct nfssvc_sock *slp;
188 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
189 struct sockaddr *nam = nfsd->nd_nam;
190 caddr_t dpos = nfsd->nd_dpos;
191 struct ucred *cred = &nfsd->nd_cr;
192 register struct nfs_fattr *fp;
194 register struct vattr *vap = &va;
198 register u_int32_t *tl;
201 int error = 0, rdonly, cache;
203 struct mbuf *mb, *mb2, *mreq;
206 fhp = &nfh.fh_generic;
208 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
209 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
214 nqsrv_getl(vp, ND_READ);
215 error = VOP_GETATTR(vp, vap, cred, procp);
217 nfsm_reply(NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
220 nfsm_build(fp, struct nfs_fattr *, NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
221 nfsm_srvfillattr(vap, fp);
226 * nfs setattr service
229 nfsrv_setattr(nfsd, slp, procp, mrq)
230 struct nfsrv_descript *nfsd;
231 struct nfssvc_sock *slp;
235 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
236 struct sockaddr *nam = nfsd->nd_nam;
237 caddr_t dpos = nfsd->nd_dpos;
238 struct ucred *cred = &nfsd->nd_cr;
239 struct vattr va, preat;
240 register struct vattr *vap = &va;
241 register struct nfsv2_sattr *sp;
242 register struct nfs_fattr *fp;
246 register u_int32_t *tl;
249 int error = 0, rdonly, cache, preat_ret = 1, postat_ret = 1;
250 int v3 = (nfsd->nd_flag & ND_NFSV3), gcheck = 0;
252 struct mbuf *mb, *mb2, *mreq;
254 struct timespec guard;
256 fhp = &nfh.fh_generic;
261 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
262 gcheck = fxdr_unsigned(int, *tl);
264 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
265 fxdr_nfsv3time(tl, &guard);
268 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
270 * Nah nah nah nah na nah
271 * There is a bug in the Sun client that puts 0xffff in the mode
272 * field of sattr when it should put in 0xffffffff. The u_short
273 * doesn't sign extend.
274 * --> check the low order 2 bytes for 0xffff
276 if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff)
277 vap->va_mode = nfstov_mode(sp->sa_mode);
278 if (sp->sa_uid != nfs_xdrneg1)
279 vap->va_uid = fxdr_unsigned(uid_t, sp->sa_uid);
280 if (sp->sa_gid != nfs_xdrneg1)
281 vap->va_gid = fxdr_unsigned(gid_t, sp->sa_gid);
282 if (sp->sa_size != nfs_xdrneg1)
283 vap->va_size = fxdr_unsigned(u_quad_t, sp->sa_size);
284 if (sp->sa_atime.nfsv2_sec != nfs_xdrneg1) {
286 fxdr_nfsv2time(&sp->sa_atime, &vap->va_atime);
288 vap->va_atime.tv_sec =
289 fxdr_unsigned(int32_t, sp->sa_atime.nfsv2_sec);
290 vap->va_atime.tv_nsec = 0;
293 if (sp->sa_mtime.nfsv2_sec != nfs_xdrneg1)
294 fxdr_nfsv2time(&sp->sa_mtime, &vap->va_mtime);
299 * Now that we have all the fields, lets do it.
301 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam, &rdonly,
302 (nfsd->nd_flag & ND_KERBAUTH), TRUE);
304 nfsm_reply(2 * NFSX_UNSIGNED);
305 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
308 nqsrv_getl(vp, ND_WRITE);
310 error = preat_ret = VOP_GETATTR(vp, &preat, cred, procp);
311 if (!error && gcheck &&
312 (preat.va_ctime.tv_sec != guard.tv_sec ||
313 preat.va_ctime.tv_nsec != guard.tv_nsec))
314 error = NFSERR_NOT_SYNC;
317 nfsm_reply(NFSX_WCCDATA(v3));
318 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
324 * If the size is being changed write acces is required, otherwise
325 * just check for a read only file system.
327 if (vap->va_size == ((u_quad_t)((quad_t) -1))) {
328 if (rdonly || (vp->v_mount->mnt_flag & MNT_RDONLY)) {
333 if (vp->v_type == VDIR) {
336 } else if ((error = nfsrv_access(vp, VWRITE, cred, rdonly,
340 error = VOP_SETATTR(vp, vap, cred, procp);
341 postat_ret = VOP_GETATTR(vp, vap, cred, procp);
346 nfsm_reply(NFSX_WCCORFATTR(v3));
348 nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
351 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
352 nfsm_srvfillattr(vap, fp);
361 nfsrv_lookup(nfsd, slp, procp, mrq)
362 struct nfsrv_descript *nfsd;
363 struct nfssvc_sock *slp;
367 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
368 struct sockaddr *nam = nfsd->nd_nam;
369 caddr_t dpos = nfsd->nd_dpos;
370 struct ucred *cred = &nfsd->nd_cr;
371 register struct nfs_fattr *fp;
372 struct nameidata nd, ind, *ndp = &nd;
373 struct vnode *vp, *dirp;
377 register u_int32_t *tl;
380 int error = 0, cache, len, dirattr_ret = 1;
381 int v3 = (nfsd->nd_flag & ND_NFSV3), pubflag;
383 struct mbuf *mb, *mb2, *mreq;
384 struct vattr va, dirattr, *vap = &va;
387 fhp = &nfh.fh_generic;
389 nfsm_srvnamesiz(len);
391 pubflag = nfs_ispublicfh(fhp);
393 nd.ni_cnd.cn_cred = cred;
394 nd.ni_cnd.cn_nameiop = LOOKUP;
395 nd.ni_cnd.cn_flags = LOCKLEAF | SAVESTART;
396 error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
397 &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), pubflag);
399 if (!error && pubflag) {
400 if (nd.ni_vp->v_type == VDIR && nfs_pub.np_index != NULL) {
402 * Setup call to lookup() to see if we can find
403 * the index file. Arguably, this doesn't belong
407 VOP_UNLOCK(nd.ni_vp, 0, procp);
408 ind.ni_pathlen = strlen(nfs_pub.np_index);
409 ind.ni_cnd.cn_nameptr = ind.ni_cnd.cn_pnbuf =
411 ind.ni_startdir = nd.ni_vp;
412 VREF(ind.ni_startdir);
413 error = lookup(&ind);
416 * Found an index file. Get rid of
417 * the old references.
422 vrele(nd.ni_startdir);
428 * If the public filehandle was used, check that this lookup
429 * didn't result in a filehandle outside the publicly exported
433 if (!error && ndp->ni_vp->v_mount != nfs_pub.np_mount) {
441 dirattr_ret = VOP_GETATTR(dirp, &dirattr, cred,
447 nfsm_reply(NFSX_POSTOPATTR(v3));
448 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
452 nqsrv_getl(ndp->ni_startdir, ND_READ);
453 vrele(ndp->ni_startdir);
454 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
456 bzero((caddr_t)fhp, sizeof(nfh));
457 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
458 error = VFS_VPTOFH(vp, &fhp->fh_fid);
460 error = VOP_GETATTR(vp, vap, cred, procp);
462 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPORFATTR(v3) + NFSX_POSTOPATTR(v3));
464 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
467 nfsm_srvfhtom(fhp, v3);
469 nfsm_srvpostop_attr(0, vap);
470 nfsm_srvpostop_attr(dirattr_ret, &dirattr);
472 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
473 nfsm_srvfillattr(vap, fp);
479 * nfs readlink service
482 nfsrv_readlink(nfsd, slp, procp, mrq)
483 struct nfsrv_descript *nfsd;
484 struct nfssvc_sock *slp;
488 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
489 struct sockaddr *nam = nfsd->nd_nam;
490 caddr_t dpos = nfsd->nd_dpos;
491 struct ucred *cred = &nfsd->nd_cr;
492 struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN];
493 register struct iovec *ivp = iv;
494 register struct mbuf *mp;
495 register u_int32_t *tl;
498 int error = 0, rdonly, cache, i, tlen, len, getret;
499 int v3 = (nfsd->nd_flag & ND_NFSV3);
501 struct mbuf *mb, *mb2, *mp2, *mp3, *mreq;
506 struct uio io, *uiop = &io;
510 mp2 = mp3 = (struct mbuf *)0;
512 fhp = &nfh.fh_generic;
516 while (len < NFS_MAXPATHLEN) {
517 MGET(mp, M_WAIT, MT_DATA);
519 mp->m_len = NFSMSIZ(mp);
526 if ((len+mp->m_len) > NFS_MAXPATHLEN) {
527 mp->m_len = NFS_MAXPATHLEN-len;
528 len = NFS_MAXPATHLEN;
531 ivp->iov_base = mtod(mp, caddr_t);
532 ivp->iov_len = mp->m_len;
537 uiop->uio_iovcnt = i;
538 uiop->uio_offset = 0;
539 uiop->uio_resid = len;
540 uiop->uio_rw = UIO_READ;
541 uiop->uio_segflg = UIO_SYSSPACE;
542 uiop->uio_procp = (struct proc *)0;
543 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
544 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
547 nfsm_reply(2 * NFSX_UNSIGNED);
548 nfsm_srvpostop_attr(1, (struct vattr *)0);
551 if (vp->v_type != VLNK) {
558 nqsrv_getl(vp, ND_READ);
559 error = VOP_READLINK(vp, uiop, cred);
561 getret = VOP_GETATTR(vp, &attr, cred, procp);
565 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_UNSIGNED);
567 nfsm_srvpostop_attr(getret, &attr);
571 if (uiop->uio_resid > 0) {
572 len -= uiop->uio_resid;
573 tlen = nfsm_rndup(len);
574 nfsm_adj(mp3, NFS_MAXPATHLEN-tlen, tlen-len);
576 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
577 *tl = txdr_unsigned(len);
586 nfsrv_read(nfsd, slp, procp, mrq)
587 struct nfsrv_descript *nfsd;
588 struct nfssvc_sock *slp;
592 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
593 struct sockaddr *nam = nfsd->nd_nam;
594 caddr_t dpos = nfsd->nd_dpos;
595 struct ucred *cred = &nfsd->nd_cr;
596 register struct iovec *iv;
598 register struct mbuf *m;
599 register struct nfs_fattr *fp;
600 register u_int32_t *tl;
604 int error = 0, rdonly, cache, cnt, len, left, siz, tlen, getret;
605 int v3 = (nfsd->nd_flag & ND_NFSV3), reqlen;
607 struct mbuf *mb, *mb2, *mreq;
612 struct uio io, *uiop = &io;
613 struct vattr va, *vap = &va;
617 fhp = &nfh.fh_generic;
620 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
621 fxdr_hyper(tl, &off);
623 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
624 off = (off_t)fxdr_unsigned(u_int32_t, *tl);
626 nfsm_srvstrsiz(reqlen, NFS_SRVMAXDATA(nfsd));
627 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
628 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
630 nfsm_reply(2 * NFSX_UNSIGNED);
631 nfsm_srvpostop_attr(1, (struct vattr *)0);
634 if (vp->v_type != VREG) {
638 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
641 nqsrv_getl(vp, ND_READ);
642 if ((error = nfsrv_access(vp, VREAD, cred, rdonly, procp, 1)) != 0)
643 error = nfsrv_access(vp, VEXEC, cred, rdonly, procp, 1);
645 getret = VOP_GETATTR(vp, vap, cred, procp);
650 nfsm_reply(NFSX_POSTOPATTR(v3));
651 nfsm_srvpostop_attr(getret, vap);
654 if (off >= vap->va_size)
656 else if ((off + reqlen) > vap->va_size)
657 cnt = nfsm_rndup(vap->va_size - off);
660 nfsm_reply(NFSX_POSTOPORFATTR(v3) + 3 * NFSX_UNSIGNED+nfsm_rndup(cnt));
662 nfsm_build(tl, u_int32_t *, NFSX_V3FATTR + 4 * NFSX_UNSIGNED);
664 fp = (struct nfs_fattr *)tl;
665 tl += (NFSX_V3FATTR / sizeof (u_int32_t));
667 nfsm_build(tl, u_int32_t *, NFSX_V2FATTR + NFSX_UNSIGNED);
668 fp = (struct nfs_fattr *)tl;
669 tl += (NFSX_V2FATTR / sizeof (u_int32_t));
674 * Generate the mbuf list with the uio_iov ref. to it.
679 siz = min(M_TRAILINGSPACE(m), left);
685 MGET(m, M_WAIT, MT_DATA);
692 MALLOC(iv, struct iovec *, i * sizeof (struct iovec),
694 uiop->uio_iov = iv2 = iv;
700 panic("nfsrv_read iov");
701 siz = min(M_TRAILINGSPACE(m), left);
703 iv->iov_base = mtod(m, caddr_t) + m->m_len;
712 uiop->uio_iovcnt = i;
713 uiop->uio_offset = off;
714 uiop->uio_resid = cnt;
715 uiop->uio_rw = UIO_READ;
716 uiop->uio_segflg = UIO_SYSSPACE;
717 error = VOP_READ(vp, uiop, IO_NODELOCKED, cred);
718 off = uiop->uio_offset;
719 FREE((caddr_t)iv2, M_TEMP);
720 if (error || (getret = VOP_GETATTR(vp, vap, cred, procp))) {
725 nfsm_reply(NFSX_POSTOPATTR(v3));
726 nfsm_srvpostop_attr(getret, vap);
732 nfsm_srvfillattr(vap, fp);
733 len -= uiop->uio_resid;
734 tlen = nfsm_rndup(len);
735 if (cnt != tlen || tlen != len)
736 nfsm_adj(mb, cnt - tlen, tlen - len);
738 *tl++ = txdr_unsigned(len);
744 *tl = txdr_unsigned(len);
752 nfsrv_write(nfsd, slp, procp, mrq)
753 struct nfsrv_descript *nfsd;
754 struct nfssvc_sock *slp;
758 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
759 struct sockaddr *nam = nfsd->nd_nam;
760 caddr_t dpos = nfsd->nd_dpos;
761 struct ucred *cred = &nfsd->nd_cr;
762 register struct iovec *ivp;
764 register struct mbuf *mp;
765 register struct nfs_fattr *fp;
767 struct vattr va, forat;
768 register struct vattr *vap = &va;
769 register u_int32_t *tl;
772 int error = 0, rdonly, cache, len, forat_ret = 1;
773 int ioflags, aftat_ret = 1, retlen, zeroing, adjust;
774 int stable = NFSV3WRITE_FILESYNC;
775 int v3 = (nfsd->nd_flag & ND_NFSV3);
777 struct mbuf *mb, *mb2, *mreq;
781 struct uio io, *uiop = &io;
789 fhp = &nfh.fh_generic;
792 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
793 fxdr_hyper(tl, &off);
795 stable = fxdr_unsigned(int, *tl++);
797 nfsm_dissect(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
798 off = (off_t)fxdr_unsigned(u_int32_t, *++tl);
801 stable = NFSV3WRITE_UNSTABLE;
803 retlen = len = fxdr_unsigned(int32_t, *tl);
807 * For NFS Version 2, it is not obvious what a write of zero length
808 * should do, but I might as well be consistent with Version 3,
809 * which is to return ok so long as there are no permission problems.
817 adjust = dpos - mtod(mp, caddr_t);
819 if (mp->m_len > 0 && adjust > 0)
824 else if (mp->m_len > 0) {
827 mp->m_len -= (i - len);
836 if (len > NFS_MAXDATA || len < 0 || i < len) {
838 nfsm_reply(2 * NFSX_UNSIGNED);
839 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
842 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
843 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
845 nfsm_reply(2 * NFSX_UNSIGNED);
846 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
850 forat_ret = VOP_GETATTR(vp, &forat, cred, procp);
851 if (vp->v_type != VREG) {
855 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
858 nqsrv_getl(vp, ND_WRITE);
859 error = nfsrv_access(vp, VWRITE, cred, rdonly, procp, 1);
863 nfsm_reply(NFSX_WCCDATA(v3));
864 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
869 MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP,
871 uiop->uio_iov = iv = ivp;
872 uiop->uio_iovcnt = cnt;
876 ivp->iov_base = mtod(mp, caddr_t);
877 ivp->iov_len = mp->m_len;
885 * The IO_METASYNC flag indicates that all metadata (and not just
886 * enough to ensure data integrity) mus be written to stable storage
888 * (IO_METASYNC is not yet implemented in 4.4BSD-Lite.)
890 if (stable == NFSV3WRITE_UNSTABLE)
891 ioflags = IO_NODELOCKED;
892 else if (stable == NFSV3WRITE_DATASYNC)
893 ioflags = (IO_SYNC | IO_NODELOCKED);
895 ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
896 uiop->uio_resid = len;
897 uiop->uio_rw = UIO_WRITE;
898 uiop->uio_segflg = UIO_SYSSPACE;
899 uiop->uio_procp = (struct proc *)0;
900 uiop->uio_offset = off;
901 error = VOP_WRITE(vp, uiop, ioflags, cred);
902 nfsstats.srvvop_writes++;
903 FREE((caddr_t)iv, M_TEMP);
905 aftat_ret = VOP_GETATTR(vp, vap, cred, procp);
909 nfsm_reply(NFSX_PREOPATTR(v3) + NFSX_POSTOPORFATTR(v3) +
910 2 * NFSX_UNSIGNED + NFSX_WRITEVERF(v3));
912 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
915 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
916 *tl++ = txdr_unsigned(retlen);
918 * If nfs_async is set, then pretend the write was FILESYNC.
920 if (stable == NFSV3WRITE_UNSTABLE && !nfs_async)
921 *tl++ = txdr_unsigned(stable);
923 *tl++ = txdr_unsigned(NFSV3WRITE_FILESYNC);
925 * Actually, there is no need to txdr these fields,
926 * but it may make the values more human readable,
927 * for debugging purposes.
929 *tl++ = txdr_unsigned(boottime.tv_sec);
930 *tl = txdr_unsigned(boottime.tv_usec);
932 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
933 nfsm_srvfillattr(vap, fp);
939 * NFS write service with write gathering support. Called when
940 * nfsrvw_procrastinate > 0.
941 * See: Chet Juszczak, "Improving the Write Performance of an NFS Server",
942 * in Proc. of the Winter 1994 Usenix Conference, pg. 247-259, San Franscisco,
946 nfsrv_writegather(ndp, slp, procp, mrq)
947 struct nfsrv_descript **ndp;
948 struct nfssvc_sock *slp;
952 register struct iovec *ivp;
953 register struct mbuf *mp;
954 register struct nfsrv_descript *wp, *nfsd, *owp, *swp;
955 register struct nfs_fattr *fp;
958 struct nfsrvw_delayhash *wpp;
960 struct vattr va, forat;
961 register u_int32_t *tl;
964 int error = 0, rdonly, cache, len, forat_ret = 1;
965 int ioflags, aftat_ret = 1, s, adjust, v3, zeroing;
967 struct mbuf *mb, *mb2, *mreq, *mrep, *md;
969 struct uio io, *uiop = &io;
970 u_quad_t frev, cur_usec;
980 mrep = nfsd->nd_mrep;
982 dpos = nfsd->nd_dpos;
984 v3 = (nfsd->nd_flag & ND_NFSV3);
985 LIST_INIT(&nfsd->nd_coalesce);
986 nfsd->nd_mreq = NULL;
987 nfsd->nd_stable = NFSV3WRITE_FILESYNC;
988 cur_usec = nfs_curusec();
989 nfsd->nd_time = cur_usec +
990 (v3 ? nfsrvw_procrastinate_v3 : nfsrvw_procrastinate);
993 * Now, get the write header..
995 nfsm_srvmtofh(&nfsd->nd_fh);
997 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
998 fxdr_hyper(tl, &nfsd->nd_off);
1000 nfsd->nd_stable = fxdr_unsigned(int, *tl++);
1002 nfsm_dissect(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1003 nfsd->nd_off = (off_t)fxdr_unsigned(u_int32_t, *++tl);
1006 nfsd->nd_stable = NFSV3WRITE_UNSTABLE;
1008 len = fxdr_unsigned(int32_t, *tl);
1010 nfsd->nd_eoff = nfsd->nd_off + len;
1013 * Trim the header out of the mbuf list and trim off any trailing
1014 * junk so that the mbuf list has only the write data.
1022 adjust = dpos - mtod(mp, caddr_t);
1023 mp->m_len -= adjust;
1024 if (mp->m_len > 0 && adjust > 0)
1025 NFSMADV(mp, adjust);
1032 mp->m_len -= (i - len);
1038 if (len > NFS_MAXDATA || len < 0 || i < len) {
1042 nfsm_writereply(2 * NFSX_UNSIGNED, v3);
1044 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1045 nfsd->nd_mreq = mreq;
1046 nfsd->nd_mrep = NULL;
1051 * Add this entry to the hash and time queues.
1055 wp = slp->ns_tq.lh_first;
1056 while (wp && wp->nd_time < nfsd->nd_time) {
1058 wp = wp->nd_tq.le_next;
1060 NFS_DPF(WG, ("Q%03x", nfsd->nd_retxid & 0xfff));
1062 LIST_INSERT_AFTER(owp, nfsd, nd_tq);
1064 LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
1066 if (nfsd->nd_mrep) {
1067 wpp = NWDELAYHASH(slp, nfsd->nd_fh.fh_fid.fid_data);
1071 bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
1073 wp = wp->nd_hash.le_next;
1075 while (wp && wp->nd_off < nfsd->nd_off &&
1076 !bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
1078 wp = wp->nd_hash.le_next;
1081 LIST_INSERT_AFTER(owp, nfsd, nd_hash);
1084 * Search the hash list for overlapping entries and
1087 for(; nfsd && NFSW_CONTIG(owp, nfsd); nfsd = wp) {
1088 wp = nfsd->nd_hash.le_next;
1089 if (NFSW_SAMECRED(owp, nfsd))
1090 nfsrvw_coalesce(owp, nfsd);
1093 LIST_INSERT_HEAD(wpp, nfsd, nd_hash);
1100 * Now, do VOP_WRITE()s for any one(s) that need to be done now
1101 * and generate the associated reply mbuf list(s).
1104 cur_usec = nfs_curusec();
1106 for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = owp) {
1107 owp = nfsd->nd_tq.le_next;
1108 if (nfsd->nd_time > cur_usec)
1112 NFS_DPF(WG, ("P%03x", nfsd->nd_retxid & 0xfff));
1113 LIST_REMOVE(nfsd, nd_tq);
1114 LIST_REMOVE(nfsd, nd_hash);
1116 mrep = nfsd->nd_mrep;
1117 nfsd->nd_mrep = NULL;
1118 cred = &nfsd->nd_cr;
1119 v3 = (nfsd->nd_flag & ND_NFSV3);
1120 forat_ret = aftat_ret = 1;
1121 error = nfsrv_fhtovp(&nfsd->nd_fh, 1, &vp, cred, slp,
1122 nfsd->nd_nam, &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
1125 forat_ret = VOP_GETATTR(vp, &forat, cred, procp);
1126 if (vp->v_type != VREG) {
1130 error = (vp->v_type == VDIR) ? EISDIR : EACCES;
1135 nqsrv_getl(vp, ND_WRITE);
1136 error = nfsrv_access(vp, VWRITE, cred, rdonly, procp, 1);
1139 if (nfsd->nd_stable == NFSV3WRITE_UNSTABLE)
1140 ioflags = IO_NODELOCKED;
1141 else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC)
1142 ioflags = (IO_SYNC | IO_NODELOCKED);
1144 ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
1145 uiop->uio_rw = UIO_WRITE;
1146 uiop->uio_segflg = UIO_SYSSPACE;
1147 uiop->uio_procp = (struct proc *)0;
1148 uiop->uio_offset = nfsd->nd_off;
1149 uiop->uio_resid = nfsd->nd_eoff - nfsd->nd_off;
1150 if (uiop->uio_resid > 0) {
1158 uiop->uio_iovcnt = i;
1159 MALLOC(iov, struct iovec *, i * sizeof (struct iovec),
1161 uiop->uio_iov = ivp = iov;
1164 if (mp->m_len > 0) {
1165 ivp->iov_base = mtod(mp, caddr_t);
1166 ivp->iov_len = mp->m_len;
1172 error = VOP_WRITE(vp, uiop, ioflags, cred);
1173 nfsstats.srvvop_writes++;
1175 FREE((caddr_t)iov, M_TEMP);
1179 aftat_ret = VOP_GETATTR(vp, &va, cred, procp);
1184 * Loop around generating replies for all write rpcs that have
1185 * now been completed.
1189 NFS_DPF(WG, ("R%03x", nfsd->nd_retxid & 0xfff));
1191 nfsm_writereply(NFSX_WCCDATA(v3), v3);
1193 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1196 nfsm_writereply(NFSX_PREOPATTR(v3) +
1197 NFSX_POSTOPORFATTR(v3) + 2 * NFSX_UNSIGNED +
1198 NFSX_WRITEVERF(v3), v3);
1200 nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
1201 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1202 *tl++ = txdr_unsigned(nfsd->nd_len);
1203 *tl++ = txdr_unsigned(swp->nd_stable);
1205 * Actually, there is no need to txdr these fields,
1206 * but it may make the values more human readable,
1207 * for debugging purposes.
1209 *tl++ = txdr_unsigned(boottime.tv_sec);
1210 *tl = txdr_unsigned(boottime.tv_usec);
1212 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1213 nfsm_srvfillattr(&va, fp);
1216 nfsd->nd_mreq = mreq;
1218 panic("nfsrv_write: nd_mrep not free");
1221 * Done. Put it at the head of the timer queue so that
1222 * the final phase can return the reply.
1227 LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
1229 nfsd = swp->nd_coalesce.lh_first;
1231 LIST_REMOVE(nfsd, nd_tq);
1237 LIST_INSERT_HEAD(&slp->ns_tq, swp, nd_tq);
1244 * Search for a reply to return.
1247 for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = nfsd->nd_tq.le_next)
1248 if (nfsd->nd_mreq) {
1249 NFS_DPF(WG, ("X%03x", nfsd->nd_retxid & 0xfff));
1250 LIST_REMOVE(nfsd, nd_tq);
1251 *mrq = nfsd->nd_mreq;
1260 * Coalesce the write request nfsd into owp. To do this we must:
1261 * - remove nfsd from the queues
1262 * - merge nfsd->nd_mrep into owp->nd_mrep
1263 * - update the nd_eoff and nd_stable for owp
1264 * - put nfsd on owp's nd_coalesce list
1265 * NB: Must be called at splsoftclock().
1268 nfsrvw_coalesce(owp, nfsd)
1269 register struct nfsrv_descript *owp;
1270 register struct nfsrv_descript *nfsd;
1272 register int overlap;
1273 register struct mbuf *mp;
1274 struct nfsrv_descript *p;
1276 NFS_DPF(WG, ("C%03x-%03x",
1277 nfsd->nd_retxid & 0xfff, owp->nd_retxid & 0xfff));
1278 LIST_REMOVE(nfsd, nd_hash);
1279 LIST_REMOVE(nfsd, nd_tq);
1280 if (owp->nd_eoff < nfsd->nd_eoff) {
1281 overlap = owp->nd_eoff - nfsd->nd_off;
1283 panic("nfsrv_coalesce: bad off");
1285 m_adj(nfsd->nd_mrep, overlap);
1289 mp->m_next = nfsd->nd_mrep;
1290 owp->nd_eoff = nfsd->nd_eoff;
1292 m_freem(nfsd->nd_mrep);
1293 nfsd->nd_mrep = NULL;
1294 if (nfsd->nd_stable == NFSV3WRITE_FILESYNC)
1295 owp->nd_stable = NFSV3WRITE_FILESYNC;
1296 else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC &&
1297 owp->nd_stable == NFSV3WRITE_UNSTABLE)
1298 owp->nd_stable = NFSV3WRITE_DATASYNC;
1299 LIST_INSERT_HEAD(&owp->nd_coalesce, nfsd, nd_tq);
1302 * If nfsd had anything else coalesced into it, transfer them
1303 * to owp, otherwise their replies will never get sent.
1305 for (p = nfsd->nd_coalesce.lh_first; p;
1306 p = nfsd->nd_coalesce.lh_first) {
1307 LIST_REMOVE(p, nd_tq);
1308 LIST_INSERT_HEAD(&owp->nd_coalesce, p, nd_tq);
1313 * nfs create service
1314 * now does a truncate to 0 length via. setattr if it already exists
1317 nfsrv_create(nfsd, slp, procp, mrq)
1318 struct nfsrv_descript *nfsd;
1319 struct nfssvc_sock *slp;
1323 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1324 struct sockaddr *nam = nfsd->nd_nam;
1325 caddr_t dpos = nfsd->nd_dpos;
1326 struct ucred *cred = &nfsd->nd_cr;
1327 register struct nfs_fattr *fp;
1328 struct vattr va, dirfor, diraft;
1329 register struct vattr *vap = &va;
1330 register struct nfsv2_sattr *sp;
1331 register u_int32_t *tl;
1332 struct nameidata nd;
1333 register caddr_t cp;
1334 register int32_t t1;
1336 int error = 0, rdev, cache, len, tsize, dirfor_ret = 1, diraft_ret = 1;
1337 int v3 = (nfsd->nd_flag & ND_NFSV3), how, exclusive_flag = 0;
1339 struct mbuf *mb, *mb2, *mreq;
1340 struct vnode *vp, *dirp = (struct vnode *)0;
1343 u_quad_t frev, tempsize;
1344 u_char cverf[NFSX_V3CREATEVERF];
1349 nd.ni_cnd.cn_nameiop = 0;
1350 fhp = &nfh.fh_generic;
1352 nfsm_srvnamesiz(len);
1353 nd.ni_cnd.cn_cred = cred;
1354 nd.ni_cnd.cn_nameiop = CREATE;
1355 nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | SAVESTART;
1356 error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
1357 &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
1360 dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
1364 dirp = (struct vnode *)0;
1368 nfsm_reply(NFSX_WCCDATA(v3));
1369 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1376 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
1377 how = fxdr_unsigned(int, *tl);
1379 case NFSV3CREATE_GUARDED:
1384 case NFSV3CREATE_UNCHECKED:
1387 case NFSV3CREATE_EXCLUSIVE:
1388 nfsm_dissect(cp, caddr_t, NFSX_V3CREATEVERF);
1389 bcopy(cp, cverf, NFSX_V3CREATEVERF);
1391 if (nd.ni_vp == NULL)
1395 vap->va_type = VREG;
1397 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
1398 vap->va_type = IFTOVT(fxdr_unsigned(u_int32_t, sp->sa_mode));
1399 if (vap->va_type == VNON)
1400 vap->va_type = VREG;
1401 vap->va_mode = nfstov_mode(sp->sa_mode);
1402 switch (vap->va_type) {
1404 tsize = fxdr_unsigned(int32_t, sp->sa_size);
1406 vap->va_size = (u_quad_t)tsize;
1411 rdev = fxdr_unsigned(long, sp->sa_size);
1419 * Iff doesn't exist, create it
1420 * otherwise just truncate to 0 length
1421 * should I set the mode too ??
1423 if (nd.ni_vp == NULL) {
1424 if (vap->va_type == VREG || vap->va_type == VSOCK) {
1425 vrele(nd.ni_startdir);
1426 nqsrv_getl(nd.ni_dvp, ND_WRITE);
1427 error = VOP_CREATE(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap);
1430 nfsrv_object_create(nd.ni_vp);
1431 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
1432 if (exclusive_flag) {
1435 bcopy(cverf, (caddr_t)&vap->va_atime,
1437 error = VOP_SETATTR(nd.ni_vp, vap, cred,
1441 } else if (vap->va_type == VCHR || vap->va_type == VBLK ||
1442 vap->va_type == VFIFO) {
1443 if (vap->va_type == VCHR && rdev == 0xffffffff)
1444 vap->va_type = VFIFO;
1445 if (vap->va_type != VFIFO &&
1446 (error = suser(cred, (u_short *)0))) {
1447 vrele(nd.ni_startdir);
1448 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
1449 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1454 vap->va_rdev = (dev_t)rdev;
1455 nqsrv_getl(nd.ni_dvp, ND_WRITE);
1456 error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap);
1459 vrele(nd.ni_startdir);
1462 nd.ni_cnd.cn_nameiop = LOOKUP;
1463 nd.ni_cnd.cn_flags &= ~(LOCKPARENT | SAVESTART);
1464 nd.ni_cnd.cn_proc = procp;
1465 nd.ni_cnd.cn_cred = cred;
1466 if ((error = lookup(&nd)) != 0) {
1467 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
1470 nfsrv_object_create(nd.ni_vp);
1471 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
1472 if (nd.ni_cnd.cn_flags & ISSYMLINK) {
1475 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1480 vrele(nd.ni_startdir);
1481 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
1482 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1488 vrele(nd.ni_startdir);
1489 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
1491 if (nd.ni_dvp == vp)
1495 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1496 if (vap->va_size != -1) {
1497 error = nfsrv_access(vp, VWRITE, cred,
1498 (nd.ni_cnd.cn_flags & RDONLY), procp, 0);
1500 nqsrv_getl(vp, ND_WRITE);
1501 tempsize = vap->va_size;
1503 vap->va_size = tempsize;
1504 error = VOP_SETATTR(vp, vap, cred,
1512 bzero((caddr_t)fhp, sizeof(nfh));
1513 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1514 error = VFS_VPTOFH(vp, &fhp->fh_fid);
1516 error = VOP_GETATTR(vp, vap, cred, procp);
1520 if (exclusive_flag && !error &&
1521 bcmp(cverf, (caddr_t)&vap->va_atime, NFSX_V3CREATEVERF))
1523 diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
1526 nfsm_reply(NFSX_SRVFH(v3) + NFSX_FATTR(v3) + NFSX_WCCDATA(v3));
1529 nfsm_srvpostop_fh(fhp);
1530 nfsm_srvpostop_attr(0, vap);
1532 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1534 nfsm_srvfhtom(fhp, v3);
1535 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
1536 nfsm_srvfillattr(vap, fp);
1542 if (nd.ni_cnd.cn_nameiop) {
1543 vrele(nd.ni_startdir);
1544 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
1546 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1547 if (nd.ni_dvp == nd.ni_vp)
1557 * nfs v3 mknod service
1560 nfsrv_mknod(nfsd, slp, procp, mrq)
1561 struct nfsrv_descript *nfsd;
1562 struct nfssvc_sock *slp;
1566 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1567 struct sockaddr *nam = nfsd->nd_nam;
1568 caddr_t dpos = nfsd->nd_dpos;
1569 struct ucred *cred = &nfsd->nd_cr;
1570 struct vattr va, dirfor, diraft;
1571 register struct vattr *vap = &va;
1572 register u_int32_t *tl;
1573 struct nameidata nd;
1574 register int32_t t1;
1576 int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
1577 u_int32_t major, minor;
1580 struct mbuf *mb, *mb2, *mreq;
1581 struct vnode *vp, *dirp = (struct vnode *)0;
1586 nd.ni_cnd.cn_nameiop = 0;
1587 fhp = &nfh.fh_generic;
1589 nfsm_srvnamesiz(len);
1590 nd.ni_cnd.cn_cred = cred;
1591 nd.ni_cnd.cn_nameiop = CREATE;
1592 nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | SAVESTART;
1593 error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
1594 &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
1596 dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred, procp);
1598 nfsm_reply(NFSX_WCCDATA(1));
1599 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1604 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
1605 vtyp = nfsv3tov_type(*tl);
1606 if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) {
1607 vrele(nd.ni_startdir);
1608 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
1609 error = NFSERR_BADTYPE;
1610 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1616 if (vtyp == VCHR || vtyp == VBLK) {
1617 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1618 major = fxdr_unsigned(u_int32_t, *tl++);
1619 minor = fxdr_unsigned(u_int32_t, *tl);
1620 vap->va_rdev = makedev(major, minor);
1624 * Iff doesn't exist, create it.
1627 vrele(nd.ni_startdir);
1628 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
1630 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1634 vap->va_type = vtyp;
1635 if (vtyp == VSOCK) {
1636 vrele(nd.ni_startdir);
1637 nqsrv_getl(nd.ni_dvp, ND_WRITE);
1638 error = VOP_CREATE(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap);
1641 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
1643 if (vtyp != VFIFO && (error = suser(cred, (u_short *)0))) {
1644 vrele(nd.ni_startdir);
1645 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
1646 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1650 nqsrv_getl(nd.ni_dvp, ND_WRITE);
1651 error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap);
1654 vrele(nd.ni_startdir);
1657 nd.ni_cnd.cn_nameiop = LOOKUP;
1658 nd.ni_cnd.cn_flags &= ~(LOCKPARENT | SAVESTART);
1659 nd.ni_cnd.cn_proc = procp;
1660 nd.ni_cnd.cn_cred = procp->p_ucred;
1661 error = lookup(&nd);
1662 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
1665 if (nd.ni_cnd.cn_flags & ISSYMLINK) {
1668 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1675 bzero((caddr_t)fhp, sizeof(nfh));
1676 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1677 error = VFS_VPTOFH(vp, &fhp->fh_fid);
1679 error = VOP_GETATTR(vp, vap, cred, procp);
1682 diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
1684 nfsm_reply(NFSX_SRVFH(1) + NFSX_POSTOPATTR(1) + NFSX_WCCDATA(1));
1686 nfsm_srvpostop_fh(fhp);
1687 nfsm_srvpostop_attr(0, vap);
1689 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1694 if (nd.ni_cnd.cn_nameiop) {
1695 vrele(nd.ni_startdir);
1696 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
1698 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1699 if (nd.ni_dvp == nd.ni_vp)
1709 * nfs remove service
1712 nfsrv_remove(nfsd, slp, procp, mrq)
1713 struct nfsrv_descript *nfsd;
1714 struct nfssvc_sock *slp;
1718 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1719 struct sockaddr *nam = nfsd->nd_nam;
1720 caddr_t dpos = nfsd->nd_dpos;
1721 struct ucred *cred = &nfsd->nd_cr;
1722 struct nameidata nd;
1723 register u_int32_t *tl;
1724 register int32_t t1;
1726 int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
1727 int v3 = (nfsd->nd_flag & ND_NFSV3);
1729 struct mbuf *mb, *mreq;
1730 struct vnode *vp, *dirp;
1731 struct vattr dirfor, diraft;
1737 vp = (struct vnode *)0;
1739 fhp = &nfh.fh_generic;
1741 nfsm_srvnamesiz(len);
1742 nd.ni_cnd.cn_cred = cred;
1743 nd.ni_cnd.cn_nameiop = DELETE;
1744 nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF;
1745 error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
1746 &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
1749 dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
1756 if (vp->v_type == VDIR) {
1757 error = EPERM; /* POSIX */
1761 * The root of a mounted filesystem cannot be deleted.
1763 if (vp->v_flag & VROOT) {
1769 nqsrv_getl(nd.ni_dvp, ND_WRITE);
1770 nqsrv_getl(vp, ND_WRITE);
1771 error = VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd);
1773 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
1775 if (nd.ni_dvp == vp)
1783 diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
1786 nfsm_reply(NFSX_WCCDATA(v3));
1788 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
1795 * nfs rename service
1798 nfsrv_rename(nfsd, slp, procp, mrq)
1799 struct nfsrv_descript *nfsd;
1800 struct nfssvc_sock *slp;
1804 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
1805 struct sockaddr *nam = nfsd->nd_nam;
1806 caddr_t dpos = nfsd->nd_dpos;
1807 struct ucred *cred = &nfsd->nd_cr;
1808 register u_int32_t *tl;
1809 register int32_t t1;
1811 int error = 0, cache, len, len2, fdirfor_ret = 1, fdiraft_ret = 1;
1812 int tdirfor_ret = 1, tdiraft_ret = 1;
1813 int v3 = (nfsd->nd_flag & ND_NFSV3);
1815 struct mbuf *mb, *mreq;
1816 struct nameidata fromnd, tond;
1817 struct vnode *fvp, *tvp, *tdvp, *fdirp = (struct vnode *)0;
1818 struct vnode *tdirp = (struct vnode *)0;
1819 struct vattr fdirfor, fdiraft, tdirfor, tdiraft;
1821 fhandle_t *ffhp, *tfhp;
1826 fvp = (struct vnode *)0;
1828 ffhp = &fnfh.fh_generic;
1829 tfhp = &tnfh.fh_generic;
1830 fromnd.ni_cnd.cn_nameiop = 0;
1831 tond.ni_cnd.cn_nameiop = 0;
1832 nfsm_srvmtofh(ffhp);
1833 nfsm_srvnamesiz(len);
1835 * Remember our original uid so that we can reset cr_uid before
1836 * the second nfs_namei() call, in case it is remapped.
1838 saved_uid = cred->cr_uid;
1839 fromnd.ni_cnd.cn_cred = cred;
1840 fromnd.ni_cnd.cn_nameiop = DELETE;
1841 fromnd.ni_cnd.cn_flags = WANTPARENT | SAVESTART;
1842 error = nfs_namei(&fromnd, ffhp, len, slp, nam, &md,
1843 &dpos, &fdirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
1846 fdirfor_ret = VOP_GETATTR(fdirp, &fdirfor, cred,
1850 fdirp = (struct vnode *)0;
1854 nfsm_reply(2 * NFSX_WCCDATA(v3));
1855 nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
1856 nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
1862 nfsm_srvmtofh(tfhp);
1863 nfsm_strsiz(len2, NFS_MAXNAMLEN);
1864 cred->cr_uid = saved_uid;
1865 tond.ni_cnd.cn_cred = cred;
1866 tond.ni_cnd.cn_nameiop = RENAME;
1867 tond.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART;
1868 error = nfs_namei(&tond, tfhp, len2, slp, nam, &md,
1869 &dpos, &tdirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
1872 tdirfor_ret = VOP_GETATTR(tdirp, &tdirfor, cred,
1876 tdirp = (struct vnode *)0;
1880 VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd);
1881 vrele(fromnd.ni_dvp);
1888 if (fvp->v_type == VDIR && tvp->v_type != VDIR) {
1894 } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) {
1901 if (tvp->v_type == VDIR && tvp->v_mountedhere) {
1909 if (fvp->v_type == VDIR && fvp->v_mountedhere) {
1916 if (fvp->v_mount != tdvp->v_mount) {
1929 * If source is the same as the destination (that is the
1930 * same vnode with the same name in the same directory),
1931 * then there is nothing to do.
1933 if (fvp == tvp && fromnd.ni_dvp == tdvp &&
1934 fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen &&
1935 !bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr,
1936 fromnd.ni_cnd.cn_namelen))
1940 nqsrv_getl(fromnd.ni_dvp, ND_WRITE);
1941 nqsrv_getl(tdvp, ND_WRITE);
1943 nqsrv_getl(tvp, ND_WRITE);
1945 error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd,
1946 tond.ni_dvp, tond.ni_vp, &tond.ni_cnd);
1948 VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd);
1955 VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd);
1956 vrele(fromnd.ni_dvp);
1961 vrele(tond.ni_startdir);
1962 zfree(namei_zone, tond.ni_cnd.cn_pnbuf);
1965 fdiraft_ret = VOP_GETATTR(fdirp, &fdiraft, cred, procp);
1969 tdiraft_ret = VOP_GETATTR(tdirp, &tdiraft, cred, procp);
1972 vrele(fromnd.ni_startdir);
1973 zfree(namei_zone, fromnd.ni_cnd.cn_pnbuf);
1974 nfsm_reply(2 * NFSX_WCCDATA(v3));
1976 nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
1977 nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
1986 if (tond.ni_cnd.cn_nameiop) {
1987 vrele(tond.ni_startdir);
1988 zfree(namei_zone, tond.ni_cnd.cn_pnbuf);
1990 if (fromnd.ni_cnd.cn_nameiop) {
1991 vrele(fromnd.ni_startdir);
1992 zfree(namei_zone, fromnd.ni_cnd.cn_pnbuf);
1993 VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd);
1994 vrele(fromnd.ni_dvp);
2004 nfsrv_link(nfsd, slp, procp, mrq)
2005 struct nfsrv_descript *nfsd;
2006 struct nfssvc_sock *slp;
2010 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2011 struct sockaddr *nam = nfsd->nd_nam;
2012 caddr_t dpos = nfsd->nd_dpos;
2013 struct ucred *cred = &nfsd->nd_cr;
2014 struct nameidata nd;
2015 register u_int32_t *tl;
2016 register int32_t t1;
2018 int error = 0, rdonly, cache, len, dirfor_ret = 1, diraft_ret = 1;
2019 int getret = 1, v3 = (nfsd->nd_flag & ND_NFSV3);
2021 struct mbuf *mb, *mreq;
2022 struct vnode *vp, *xp, *dirp = (struct vnode *)0;
2023 struct vattr dirfor, diraft, at;
2025 fhandle_t *fhp, *dfhp;
2028 fhp = &nfh.fh_generic;
2029 dfhp = &dnfh.fh_generic;
2031 nfsm_srvmtofh(dfhp);
2032 nfsm_srvnamesiz(len);
2033 error = nfsrv_fhtovp(fhp, FALSE, &vp, cred, slp, nam,
2034 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
2036 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2037 nfsm_srvpostop_attr(getret, &at);
2038 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2041 if (vp->v_type == VDIR) {
2042 error = EPERM; /* POSIX */
2045 nd.ni_cnd.cn_cred = cred;
2046 nd.ni_cnd.cn_nameiop = CREATE;
2047 nd.ni_cnd.cn_flags = LOCKPARENT;
2048 error = nfs_namei(&nd, dfhp, len, slp, nam, &md, &dpos,
2049 &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
2052 dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
2056 dirp = (struct vnode *)0;
2067 if (vp->v_mount != xp->v_mount)
2071 nqsrv_getl(vp, ND_WRITE);
2072 nqsrv_getl(xp, ND_WRITE);
2073 error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd);
2076 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
2077 if (nd.ni_dvp == nd.ni_vp)
2086 getret = VOP_GETATTR(vp, &at, cred, procp);
2088 diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
2092 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2094 nfsm_srvpostop_attr(getret, &at);
2095 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2102 * nfs symbolic link service
2105 nfsrv_symlink(nfsd, slp, procp, mrq)
2106 struct nfsrv_descript *nfsd;
2107 struct nfssvc_sock *slp;
2111 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2112 struct sockaddr *nam = nfsd->nd_nam;
2113 caddr_t dpos = nfsd->nd_dpos;
2114 struct ucred *cred = &nfsd->nd_cr;
2115 struct vattr va, dirfor, diraft;
2116 struct nameidata nd;
2117 register struct vattr *vap = &va;
2118 register u_int32_t *tl;
2119 register int32_t t1;
2120 struct nfsv2_sattr *sp;
2121 char *bpos, *pathcp = (char *)0, *cp2;
2124 int error = 0, cache, len, len2, dirfor_ret = 1, diraft_ret = 1;
2125 int v3 = (nfsd->nd_flag & ND_NFSV3);
2126 struct mbuf *mb, *mreq, *mb2;
2127 struct vnode *dirp = (struct vnode *)0;
2132 nd.ni_cnd.cn_nameiop = 0;
2133 fhp = &nfh.fh_generic;
2135 nfsm_srvnamesiz(len);
2136 nd.ni_cnd.cn_cred = cred;
2137 nd.ni_cnd.cn_nameiop = CREATE;
2138 nd.ni_cnd.cn_flags = LOCKPARENT | SAVESTART;
2139 error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
2140 &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
2143 dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
2147 dirp = (struct vnode *)0;
2155 nfsm_strsiz(len2, NFS_MAXPATHLEN);
2156 MALLOC(pathcp, caddr_t, len2 + 1, M_TEMP, M_WAITOK);
2157 iv.iov_base = pathcp;
2159 io.uio_resid = len2;
2163 io.uio_segflg = UIO_SYSSPACE;
2164 io.uio_rw = UIO_READ;
2165 io.uio_procp = (struct proc *)0;
2166 nfsm_mtouio(&io, len2);
2168 nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
2169 vap->va_mode = fxdr_unsigned(u_int16_t, sp->sa_mode);
2171 *(pathcp + len2) = '\0';
2173 vrele(nd.ni_startdir);
2174 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
2175 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
2176 if (nd.ni_dvp == nd.ni_vp)
2184 nqsrv_getl(nd.ni_dvp, ND_WRITE);
2185 error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap, pathcp);
2188 vrele(nd.ni_startdir);
2191 nd.ni_cnd.cn_nameiop = LOOKUP;
2192 nd.ni_cnd.cn_flags &= ~(LOCKPARENT | SAVESTART | FOLLOW);
2193 nd.ni_cnd.cn_flags |= (NOFOLLOW | LOCKLEAF);
2194 nd.ni_cnd.cn_proc = procp;
2195 nd.ni_cnd.cn_cred = cred;
2196 error = lookup(&nd);
2198 bzero((caddr_t)fhp, sizeof(nfh));
2199 fhp->fh_fsid = nd.ni_vp->v_mount->mnt_stat.f_fsid;
2200 error = VFS_VPTOFH(nd.ni_vp, &fhp->fh_fid);
2202 error = VOP_GETATTR(nd.ni_vp, vap, cred,
2207 vrele(nd.ni_startdir);
2208 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
2212 FREE(pathcp, M_TEMP);
2214 diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
2217 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2220 nfsm_srvpostop_fh(fhp);
2221 nfsm_srvpostop_attr(0, vap);
2223 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2227 if (nd.ni_cnd.cn_nameiop) {
2228 vrele(nd.ni_startdir);
2229 zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
2233 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
2234 if (nd.ni_dvp == nd.ni_vp)
2241 FREE(pathcp, M_TEMP);
2249 nfsrv_mkdir(nfsd, slp, procp, mrq)
2250 struct nfsrv_descript *nfsd;
2251 struct nfssvc_sock *slp;
2255 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2256 struct sockaddr *nam = nfsd->nd_nam;
2257 caddr_t dpos = nfsd->nd_dpos;
2258 struct ucred *cred = &nfsd->nd_cr;
2259 struct vattr va, dirfor, diraft;
2260 register struct vattr *vap = &va;
2261 register struct nfs_fattr *fp;
2262 struct nameidata nd;
2263 register caddr_t cp;
2264 register u_int32_t *tl;
2265 register int32_t t1;
2267 int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
2268 int v3 = (nfsd->nd_flag & ND_NFSV3);
2270 struct mbuf *mb, *mb2, *mreq;
2271 struct vnode *vp, *dirp = (struct vnode *)0;
2276 fhp = &nfh.fh_generic;
2278 nfsm_srvnamesiz(len);
2279 nd.ni_cnd.cn_cred = cred;
2280 nd.ni_cnd.cn_nameiop = CREATE;
2281 nd.ni_cnd.cn_flags = LOCKPARENT;
2282 error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
2283 &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
2286 dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
2290 dirp = (struct vnode *)0;
2294 nfsm_reply(NFSX_WCCDATA(v3));
2295 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2304 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED);
2305 vap->va_mode = nfstov_mode(*tl++);
2307 vap->va_type = VDIR;
2310 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
2311 if (nd.ni_dvp == vp)
2319 nqsrv_getl(nd.ni_dvp, ND_WRITE);
2320 error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap);
2324 bzero((caddr_t)fhp, sizeof(nfh));
2325 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
2326 error = VFS_VPTOFH(vp, &fhp->fh_fid);
2328 error = VOP_GETATTR(vp, vap, cred, procp);
2333 diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
2336 nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
2339 nfsm_srvpostop_fh(fhp);
2340 nfsm_srvpostop_attr(0, vap);
2342 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2344 nfsm_srvfhtom(fhp, v3);
2345 nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
2346 nfsm_srvfillattr(vap, fp);
2352 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
2353 if (nd.ni_dvp == nd.ni_vp)
2366 nfsrv_rmdir(nfsd, slp, procp, mrq)
2367 struct nfsrv_descript *nfsd;
2368 struct nfssvc_sock *slp;
2372 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2373 struct sockaddr *nam = nfsd->nd_nam;
2374 caddr_t dpos = nfsd->nd_dpos;
2375 struct ucred *cred = &nfsd->nd_cr;
2376 register u_int32_t *tl;
2377 register int32_t t1;
2379 int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
2380 int v3 = (nfsd->nd_flag & ND_NFSV3);
2382 struct mbuf *mb, *mreq;
2383 struct vnode *vp, *dirp = (struct vnode *)0;
2384 struct vattr dirfor, diraft;
2387 struct nameidata nd;
2390 fhp = &nfh.fh_generic;
2392 nfsm_srvnamesiz(len);
2393 nd.ni_cnd.cn_cred = cred;
2394 nd.ni_cnd.cn_nameiop = DELETE;
2395 nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF;
2396 error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
2397 &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
2400 dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
2404 dirp = (struct vnode *)0;
2408 nfsm_reply(NFSX_WCCDATA(v3));
2409 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2415 if (vp->v_type != VDIR) {
2420 * No rmdir "." please.
2422 if (nd.ni_dvp == vp) {
2427 * The root of a mounted filesystem cannot be deleted.
2429 if (vp->v_flag & VROOT)
2433 nqsrv_getl(nd.ni_dvp, ND_WRITE);
2434 nqsrv_getl(vp, ND_WRITE);
2435 error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd);
2437 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
2439 if (nd.ni_dvp == nd.ni_vp)
2446 diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
2449 nfsm_reply(NFSX_WCCDATA(v3));
2451 nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
2458 * nfs readdir service
2459 * - mallocs what it thinks is enough to read
2460 * count rounded up to a multiple of NFS_DIRBLKSIZ <= NFS_MAXREADDIR
2461 * - calls VOP_READDIR()
2462 * - loops around building the reply
2463 * if the output generated exceeds count break out of loop
2464 * The nfsm_clget macro is used here so that the reply will be packed
2465 * tightly in mbuf clusters.
2466 * - it only knows that it has encountered eof when the VOP_READDIR()
2468 * - as such one readdir rpc will return eof false although you are there
2469 * and then the next will return eof
2470 * - it trims out records with d_fileno == 0
2471 * this doesn't matter for Unix clients, but they might confuse clients
2473 * NB: It is tempting to set eof to true if the VOP_READDIR() reads less
2474 * than requested, but this may not apply to all filesystems. For
2475 * example, client NFS does not { although it is never remote mounted
2477 * The alternate call nfsrv_readdirplus() does lookups as well.
2478 * PS: The NFS protocol spec. does not clarify what the "count" byte
2479 * argument is a count of.. just name strings and file id's or the
2480 * entire reply rpc or ...
2481 * I tried just file name and id sizes and it confused the Sun client,
2482 * so I am using the full rpc size now. The "paranoia.." comment refers
2483 * to including the status longwords that are not a part of the dir.
2484 * "entry" structures, but are in the rpc.
2488 u_int32_t fl_postopok;
2489 u_int32_t fl_fattr[NFSX_V3FATTR / sizeof (u_int32_t)];
2491 u_int32_t fl_fhsize;
2492 u_int32_t fl_nfh[NFSX_V3FH / sizeof (u_int32_t)];
2496 nfsrv_readdir(nfsd, slp, procp, mrq)
2497 struct nfsrv_descript *nfsd;
2498 struct nfssvc_sock *slp;
2502 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2503 struct sockaddr *nam = nfsd->nd_nam;
2504 caddr_t dpos = nfsd->nd_dpos;
2505 struct ucred *cred = &nfsd->nd_cr;
2506 register char *bp, *be;
2507 register struct mbuf *mp;
2508 register struct dirent *dp;
2509 register caddr_t cp;
2510 register u_int32_t *tl;
2511 register int32_t t1;
2513 struct mbuf *mb, *mb2, *mreq, *mp2;
2514 char *cpos, *cend, *cp2, *rbuf;
2521 int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
2522 int siz, cnt, fullsiz, eofflag, rdonly, cache, ncookies;
2523 int v3 = (nfsd->nd_flag & ND_NFSV3);
2524 u_quad_t frev, off, toff, verf;
2525 u_long *cookies = NULL, *cookiep; /* needs to be int64_t or off_t */
2527 fhp = &nfh.fh_generic;
2530 nfsm_dissect(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2531 fxdr_hyper(tl, &toff);
2533 fxdr_hyper(tl, &verf);
2536 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2537 toff = fxdr_unsigned(u_quad_t, *tl++);
2540 cnt = fxdr_unsigned(int, *tl);
2541 siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
2542 xfer = NFS_SRVMAXDATA(nfsd);
2546 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
2547 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
2548 if (!error && vp->v_type != VDIR) {
2553 nfsm_reply(NFSX_UNSIGNED);
2554 nfsm_srvpostop_attr(getret, &at);
2557 nqsrv_getl(vp, ND_READ);
2559 error = getret = VOP_GETATTR(vp, &at, cred, procp);
2561 * XXX This check may be too strict for Solaris 2.5 clients.
2563 if (!error && toff && verf && verf != at.va_filerev)
2564 error = NFSERR_BAD_COOKIE;
2567 error = nfsrv_access(vp, VEXEC, cred, rdonly, procp, 0);
2570 nfsm_reply(NFSX_POSTOPATTR(v3));
2571 nfsm_srvpostop_attr(getret, &at);
2574 VOP_UNLOCK(vp, 0, procp);
2575 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
2578 iv.iov_len = fullsiz;
2581 io.uio_offset = (off_t)off;
2582 io.uio_resid = fullsiz;
2583 io.uio_segflg = UIO_SYSSPACE;
2584 io.uio_rw = UIO_READ;
2585 io.uio_procp = (struct proc *)0;
2587 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, procp);
2589 free((caddr_t)cookies, M_TEMP);
2592 error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
2593 off = (off_t)io.uio_offset;
2594 if (!cookies && !error)
2595 error = NFSERR_PERM;
2597 getret = VOP_GETATTR(vp, &at, cred, procp);
2601 VOP_UNLOCK(vp, 0, procp);
2604 free((caddr_t)rbuf, M_TEMP);
2606 free((caddr_t)cookies, M_TEMP);
2607 nfsm_reply(NFSX_POSTOPATTR(v3));
2608 nfsm_srvpostop_attr(getret, &at);
2612 siz -= io.uio_resid;
2615 * If nothing read, return eof
2620 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) +
2623 nfsm_srvpostop_attr(getret, &at);
2624 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2625 txdr_hyper(&at.va_filerev, tl);
2628 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2631 FREE((caddr_t)rbuf, M_TEMP);
2632 FREE((caddr_t)cookies, M_TEMP);
2638 * Check for degenerate cases of nothing useful read.
2639 * If so go try again
2643 dp = (struct dirent *)cpos;
2646 * For some reason FreeBSD's ufs_readdir() chooses to back the
2647 * directory offset up to a block boundary, so it is necessary to
2648 * skip over the records that preceed the requested offset. This
2649 * requires the assumption that file offset cookies monotonically
2652 while (cpos < cend && ncookies > 0 &&
2653 (dp->d_fileno == 0 || dp->d_type == DT_WHT ||
2654 ((u_quad_t)(*cookiep)) <= toff)) {
2655 cpos += dp->d_reclen;
2656 dp = (struct dirent *)cpos;
2660 if (cpos >= cend || ncookies == 0) {
2666 len = 3 * NFSX_UNSIGNED; /* paranoia, probably can be 0 */
2667 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) + siz);
2669 nfsm_srvpostop_attr(getret, &at);
2670 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2671 txdr_hyper(&at.va_filerev, tl);
2675 be = bp + M_TRAILINGSPACE(mp);
2677 /* Loop through the records and build reply */
2678 while (cpos < cend && ncookies > 0) {
2679 if (dp->d_fileno != 0 && dp->d_type != DT_WHT) {
2680 nlen = dp->d_namlen;
2681 rem = nfsm_rndup(nlen)-nlen;
2682 len += (4 * NFSX_UNSIGNED + nlen + rem);
2684 len += 2 * NFSX_UNSIGNED;
2690 * Build the directory record xdr from
2695 bp += NFSX_UNSIGNED;
2699 bp += NFSX_UNSIGNED;
2702 *tl = txdr_unsigned(dp->d_fileno);
2703 bp += NFSX_UNSIGNED;
2705 *tl = txdr_unsigned(nlen);
2706 bp += NFSX_UNSIGNED;
2708 /* And loop around copying the name */
2717 bcopy(cp, bp, tsiz);
2723 /* And null pad to a int32_t boundary */
2724 for (i = 0; i < rem; i++)
2728 /* Finish off the record */
2731 bp += NFSX_UNSIGNED;
2734 *tl = txdr_unsigned(*cookiep);
2735 bp += NFSX_UNSIGNED;
2737 cpos += dp->d_reclen;
2738 dp = (struct dirent *)cpos;
2745 bp += NFSX_UNSIGNED;
2751 bp += NFSX_UNSIGNED;
2754 mp->m_len = bp - mtod(mp, caddr_t);
2756 mp->m_len += bp - bpos;
2757 FREE((caddr_t)rbuf, M_TEMP);
2758 FREE((caddr_t)cookies, M_TEMP);
2763 nfsrv_readdirplus(nfsd, slp, procp, mrq)
2764 struct nfsrv_descript *nfsd;
2765 struct nfssvc_sock *slp;
2769 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
2770 struct sockaddr *nam = nfsd->nd_nam;
2771 caddr_t dpos = nfsd->nd_dpos;
2772 struct ucred *cred = &nfsd->nd_cr;
2773 register char *bp, *be;
2774 register struct mbuf *mp;
2775 register struct dirent *dp;
2776 register caddr_t cp;
2777 register u_int32_t *tl;
2778 register int32_t t1;
2780 struct mbuf *mb, *mb2, *mreq, *mp2;
2781 char *cpos, *cend, *cp2, *rbuf;
2782 struct vnode *vp, *nvp;
2785 fhandle_t *fhp, *nfhp = (fhandle_t *)fl.fl_nfh;
2788 struct vattr va, at, *vap = &va;
2789 struct nfs_fattr *fp;
2790 int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
2791 int siz, cnt, fullsiz, eofflag, rdonly, cache, dirlen, ncookies;
2792 u_quad_t frev, off, toff, verf;
2793 u_long *cookies = NULL, *cookiep; /* needs to be int64_t or off_t */
2795 fhp = &nfh.fh_generic;
2797 nfsm_dissect(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
2798 fxdr_hyper(tl, &toff);
2800 fxdr_hyper(tl, &verf);
2802 siz = fxdr_unsigned(int, *tl++);
2803 cnt = fxdr_unsigned(int, *tl);
2805 siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
2806 xfer = NFS_SRVMAXDATA(nfsd);
2810 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
2811 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
2812 if (!error && vp->v_type != VDIR) {
2817 nfsm_reply(NFSX_UNSIGNED);
2818 nfsm_srvpostop_attr(getret, &at);
2821 error = getret = VOP_GETATTR(vp, &at, cred, procp);
2823 * XXX This check may be too strict for Solaris 2.5 clients.
2825 if (!error && toff && verf && verf != at.va_filerev)
2826 error = NFSERR_BAD_COOKIE;
2828 nqsrv_getl(vp, ND_READ);
2829 error = nfsrv_access(vp, VEXEC, cred, rdonly, procp, 0);
2833 nfsm_reply(NFSX_V3POSTOPATTR);
2834 nfsm_srvpostop_attr(getret, &at);
2837 VOP_UNLOCK(vp, 0, procp);
2838 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
2841 iv.iov_len = fullsiz;
2844 io.uio_offset = (off_t)off;
2845 io.uio_resid = fullsiz;
2846 io.uio_segflg = UIO_SYSSPACE;
2847 io.uio_rw = UIO_READ;
2848 io.uio_procp = (struct proc *)0;
2850 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, procp);
2852 free((caddr_t)cookies, M_TEMP);
2855 error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
2856 off = (u_quad_t)io.uio_offset;
2857 getret = VOP_GETATTR(vp, &at, cred, procp);
2858 VOP_UNLOCK(vp, 0, procp);
2859 if (!cookies && !error)
2860 error = NFSERR_PERM;
2866 free((caddr_t)cookies, M_TEMP);
2867 free((caddr_t)rbuf, M_TEMP);
2868 nfsm_reply(NFSX_V3POSTOPATTR);
2869 nfsm_srvpostop_attr(getret, &at);
2873 siz -= io.uio_resid;
2876 * If nothing read, return eof
2881 nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF +
2883 nfsm_srvpostop_attr(getret, &at);
2884 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2885 txdr_hyper(&at.va_filerev, tl);
2889 FREE((caddr_t)cookies, M_TEMP);
2890 FREE((caddr_t)rbuf, M_TEMP);
2896 * Check for degenerate cases of nothing useful read.
2897 * If so go try again
2901 dp = (struct dirent *)cpos;
2904 * For some reason FreeBSD's ufs_readdir() chooses to back the
2905 * directory offset up to a block boundary, so it is necessary to
2906 * skip over the records that preceed the requested offset. This
2907 * requires the assumption that file offset cookies monotonically
2910 while (cpos < cend && ncookies > 0 &&
2911 (dp->d_fileno == 0 || dp->d_type == DT_WHT ||
2912 ((u_quad_t)(*cookiep)) <= toff)) {
2913 cpos += dp->d_reclen;
2914 dp = (struct dirent *)cpos;
2918 if (cpos >= cend || ncookies == 0) {
2925 * Probe one of the directory entries to see if the filesystem
2928 if (VFS_VGET(vp->v_mount, dp->d_fileno, &nvp) == EOPNOTSUPP) {
2929 error = NFSERR_NOTSUPP;
2931 free((caddr_t)cookies, M_TEMP);
2932 free((caddr_t)rbuf, M_TEMP);
2933 nfsm_reply(NFSX_V3POSTOPATTR);
2934 nfsm_srvpostop_attr(getret, &at);
2939 dirlen = len = NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF + 2 * NFSX_UNSIGNED;
2941 nfsm_srvpostop_attr(getret, &at);
2942 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2943 txdr_hyper(&at.va_filerev, tl);
2946 be = bp + M_TRAILINGSPACE(mp);
2948 /* Loop through the records and build reply */
2949 while (cpos < cend && ncookies > 0) {
2950 if (dp->d_fileno != 0 && dp->d_type != DT_WHT) {
2951 nlen = dp->d_namlen;
2952 rem = nfsm_rndup(nlen)-nlen;
2955 * For readdir_and_lookup get the vnode using
2958 if (VFS_VGET(vp->v_mount, dp->d_fileno, &nvp))
2960 bzero((caddr_t)nfhp, NFSX_V3FH);
2962 nvp->v_mount->mnt_stat.f_fsid;
2963 if (VFS_VPTOFH(nvp, &nfhp->fh_fid)) {
2967 if (VOP_GETATTR(nvp, vap, cred, procp)) {
2974 * If either the dircount or maxcount will be
2975 * exceeded, get out now. Both of these lengths
2976 * are calculated conservatively, including all
2979 len += (7 * NFSX_UNSIGNED + nlen + rem + NFSX_V3FH +
2981 dirlen += (6 * NFSX_UNSIGNED + nlen + rem);
2982 if (len > cnt || dirlen > fullsiz) {
2988 * Build the directory record xdr from
2991 fp = (struct nfs_fattr *)&fl.fl_fattr;
2992 nfsm_srvfillattr(vap, fp);
2993 fl.fl_fhsize = txdr_unsigned(NFSX_V3FH);
2994 fl.fl_fhok = nfs_true;
2995 fl.fl_postopok = nfs_true;
2996 fl.fl_off.nfsuquad[0] = 0;
2997 fl.fl_off.nfsuquad[1] = txdr_unsigned(*cookiep);
3001 bp += NFSX_UNSIGNED;
3004 bp += NFSX_UNSIGNED;
3006 *tl = txdr_unsigned(dp->d_fileno);
3007 bp += NFSX_UNSIGNED;
3009 *tl = txdr_unsigned(nlen);
3010 bp += NFSX_UNSIGNED;
3012 /* And loop around copying the name */
3017 if ((bp + xfer) > be)
3021 bcopy(cp, bp, tsiz);
3027 /* And null pad to a int32_t boundary */
3028 for (i = 0; i < rem; i++)
3032 * Now copy the flrep structure out.
3034 xfer = sizeof (struct flrep);
3038 if ((bp + xfer) > be)
3042 bcopy(cp, bp, tsiz);
3050 cpos += dp->d_reclen;
3051 dp = (struct dirent *)cpos;
3058 bp += NFSX_UNSIGNED;
3064 bp += NFSX_UNSIGNED;
3067 mp->m_len = bp - mtod(mp, caddr_t);
3069 mp->m_len += bp - bpos;
3070 FREE((caddr_t)cookies, M_TEMP);
3071 FREE((caddr_t)rbuf, M_TEMP);
3076 * nfs commit service
3079 nfsrv_commit(nfsd, slp, procp, mrq)
3080 struct nfsrv_descript *nfsd;
3081 struct nfssvc_sock *slp;
3085 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3086 struct sockaddr *nam = nfsd->nd_nam;
3087 caddr_t dpos = nfsd->nd_dpos;
3088 struct ucred *cred = &nfsd->nd_cr;
3089 struct vattr bfor, aft;
3093 register u_int32_t *tl;
3094 register int32_t t1;
3096 int error = 0, rdonly, for_ret = 1, aft_ret = 1, cnt, cache;
3098 struct mbuf *mb, *mb2, *mreq;
3104 fhp = &nfh.fh_generic;
3106 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3109 * XXX At this time VOP_FSYNC() does not accept offset and byte
3110 * count parameters, so these arguments are useless (someday maybe).
3112 fxdr_hyper(tl, &off);
3114 cnt = fxdr_unsigned(int, *tl);
3115 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3116 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3118 nfsm_reply(2 * NFSX_UNSIGNED);
3119 nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
3122 for_ret = VOP_GETATTR(vp, &bfor, cred, procp);
3124 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
3125 vm_object_page_clean(vp->v_object, 0, 0, TRUE);
3127 error = VOP_FSYNC(vp, cred, MNT_WAIT, procp);
3128 aft_ret = VOP_GETATTR(vp, &aft, cred, procp);
3130 nfsm_reply(NFSX_V3WCCDATA + NFSX_V3WRITEVERF);
3131 nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
3133 nfsm_build(tl, u_int32_t *, NFSX_V3WRITEVERF);
3134 *tl++ = txdr_unsigned(boottime.tv_sec);
3135 *tl = txdr_unsigned(boottime.tv_usec);
3142 * nfs statfs service
3145 nfsrv_statfs(nfsd, slp, procp, mrq)
3146 struct nfsrv_descript *nfsd;
3147 struct nfssvc_sock *slp;
3151 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3152 struct sockaddr *nam = nfsd->nd_nam;
3153 caddr_t dpos = nfsd->nd_dpos;
3154 struct ucred *cred = &nfsd->nd_cr;
3155 register struct statfs *sf;
3156 register struct nfs_statfs *sfp;
3157 register u_int32_t *tl;
3158 register int32_t t1;
3160 int error = 0, rdonly, cache, getret = 1;
3161 int v3 = (nfsd->nd_flag & ND_NFSV3);
3163 struct mbuf *mb, *mb2, *mreq;
3168 struct statfs statfs;
3169 u_quad_t frev, tval;
3174 fhp = &nfh.fh_generic;
3176 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3177 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3179 nfsm_reply(NFSX_UNSIGNED);
3180 nfsm_srvpostop_attr(getret, &at);
3184 error = VFS_STATFS(vp->v_mount, sf, procp);
3185 getret = VOP_GETATTR(vp, &at, cred, procp);
3187 nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_STATFS(v3));
3189 nfsm_srvpostop_attr(getret, &at);
3192 nfsm_build(sfp, struct nfs_statfs *, NFSX_STATFS(v3));
3194 tval = (u_quad_t)sf->f_blocks;
3195 tval *= (u_quad_t)sf->f_bsize;
3196 txdr_hyper(&tval, &sfp->sf_tbytes);
3197 tval = (u_quad_t)sf->f_bfree;
3198 tval *= (u_quad_t)sf->f_bsize;
3199 txdr_hyper(&tval, &sfp->sf_fbytes);
3200 tval = (u_quad_t)sf->f_bavail;
3201 tval *= (u_quad_t)sf->f_bsize;
3202 txdr_hyper(&tval, &sfp->sf_abytes);
3203 sfp->sf_tfiles.nfsuquad[0] = 0;
3204 sfp->sf_tfiles.nfsuquad[1] = txdr_unsigned(sf->f_files);
3205 sfp->sf_ffiles.nfsuquad[0] = 0;
3206 sfp->sf_ffiles.nfsuquad[1] = txdr_unsigned(sf->f_ffree);
3207 sfp->sf_afiles.nfsuquad[0] = 0;
3208 sfp->sf_afiles.nfsuquad[1] = txdr_unsigned(sf->f_ffree);
3209 sfp->sf_invarsec = 0;
3211 sfp->sf_tsize = txdr_unsigned(NFS_MAXDGRAMDATA);
3212 sfp->sf_bsize = txdr_unsigned(sf->f_bsize);
3213 sfp->sf_blocks = txdr_unsigned(sf->f_blocks);
3214 sfp->sf_bfree = txdr_unsigned(sf->f_bfree);
3215 sfp->sf_bavail = txdr_unsigned(sf->f_bavail);
3221 * nfs fsinfo service
3224 nfsrv_fsinfo(nfsd, slp, procp, mrq)
3225 struct nfsrv_descript *nfsd;
3226 struct nfssvc_sock *slp;
3230 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3231 struct sockaddr *nam = nfsd->nd_nam;
3232 caddr_t dpos = nfsd->nd_dpos;
3233 struct ucred *cred = &nfsd->nd_cr;
3234 register u_int32_t *tl;
3235 register struct nfsv3_fsinfo *sip;
3236 register int32_t t1;
3238 int error = 0, rdonly, cache, getret = 1, pref;
3240 struct mbuf *mb, *mb2, *mreq;
3245 u_quad_t frev, maxfsize;
3251 fhp = &nfh.fh_generic;
3253 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3254 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3256 nfsm_reply(NFSX_UNSIGNED);
3257 nfsm_srvpostop_attr(getret, &at);
3261 /* XXX Try to make a guess on the max file size. */
3262 VFS_STATFS(vp->v_mount, &sb, procp);
3263 maxfsize = (u_quad_t)0x80000000 * sb.f_bsize - 1;
3265 getret = VOP_GETATTR(vp, &at, cred, procp);
3267 nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3FSINFO);
3268 nfsm_srvpostop_attr(getret, &at);
3269 nfsm_build(sip, struct nfsv3_fsinfo *, NFSX_V3FSINFO);
3273 * There should be file system VFS OP(s) to get this information.
3274 * For now, assume ufs.
3276 if (slp->ns_so->so_type == SOCK_DGRAM)
3277 pref = NFS_MAXDGRAMDATA;
3280 sip->fs_rtmax = txdr_unsigned(NFS_MAXDATA);
3281 sip->fs_rtpref = txdr_unsigned(pref);
3282 sip->fs_rtmult = txdr_unsigned(NFS_FABLKSIZE);
3283 sip->fs_wtmax = txdr_unsigned(NFS_MAXDATA);
3284 sip->fs_wtpref = txdr_unsigned(pref);
3285 sip->fs_wtmult = txdr_unsigned(NFS_FABLKSIZE);
3286 sip->fs_dtpref = txdr_unsigned(pref);
3287 txdr_hyper(&maxfsize, &sip->fs_maxfilesize);
3288 sip->fs_timedelta.nfsv3_sec = 0;
3289 sip->fs_timedelta.nfsv3_nsec = txdr_unsigned(1);
3290 sip->fs_properties = txdr_unsigned(NFSV3FSINFO_LINK |
3291 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
3292 NFSV3FSINFO_CANSETTIME);
3297 * nfs pathconf service
3300 nfsrv_pathconf(nfsd, slp, procp, mrq)
3301 struct nfsrv_descript *nfsd;
3302 struct nfssvc_sock *slp;
3306 struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
3307 struct sockaddr *nam = nfsd->nd_nam;
3308 caddr_t dpos = nfsd->nd_dpos;
3309 struct ucred *cred = &nfsd->nd_cr;
3310 register u_int32_t *tl;
3311 register struct nfsv3_pathconf *pc;
3312 register int32_t t1;
3314 int error = 0, rdonly, cache, getret = 1;
3315 register_t linkmax, namemax, chownres, notrunc;
3317 struct mbuf *mb, *mb2, *mreq;
3327 fhp = &nfh.fh_generic;
3329 error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
3330 &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
3332 nfsm_reply(NFSX_UNSIGNED);
3333 nfsm_srvpostop_attr(getret, &at);
3336 error = VOP_PATHCONF(vp, _PC_LINK_MAX, &linkmax);
3338 error = VOP_PATHCONF(vp, _PC_NAME_MAX, &namemax);
3340 error = VOP_PATHCONF(vp, _PC_CHOWN_RESTRICTED, &chownres);
3342 error = VOP_PATHCONF(vp, _PC_NO_TRUNC, ¬runc);
3343 getret = VOP_GETATTR(vp, &at, cred, procp);
3345 nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3PATHCONF);
3346 nfsm_srvpostop_attr(getret, &at);
3349 nfsm_build(pc, struct nfsv3_pathconf *, NFSX_V3PATHCONF);
3351 pc->pc_linkmax = txdr_unsigned(linkmax);
3352 pc->pc_namemax = txdr_unsigned(namemax);
3353 pc->pc_notrunc = txdr_unsigned(notrunc);
3354 pc->pc_chownrestricted = txdr_unsigned(chownres);
3357 * These should probably be supported by VOP_PATHCONF(), but
3358 * until msdosfs is exportable (why would you want to?), the
3359 * Unix defaults should be ok.
3361 pc->pc_caseinsensitive = nfs_false;
3362 pc->pc_casepreserving = nfs_true;
3367 * Null operation, used by clients to ping server
3371 nfsrv_null(nfsd, slp, procp, mrq)
3372 struct nfsrv_descript *nfsd;
3373 struct nfssvc_sock *slp;
3377 struct mbuf *mrep = nfsd->nd_mrep;
3379 int error = NFSERR_RETVOID, cache;
3380 struct mbuf *mb, *mreq;
3391 * No operation, used for obsolete procedures
3395 nfsrv_noop(nfsd, slp, procp, mrq)
3396 struct nfsrv_descript *nfsd;
3397 struct nfssvc_sock *slp;
3401 struct mbuf *mrep = nfsd->nd_mrep;
3404 struct mbuf *mb, *mreq;
3410 if (nfsd->nd_repstat)
3411 error = nfsd->nd_repstat;
3413 error = EPROCUNAVAIL;
3419 * Perform access checking for vnodes obtained from file handles that would
3420 * refer to files already opened by a Unix client. You cannot just use
3421 * vn_writechk() and VOP_ACCESS() for two reasons.
3422 * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write case
3423 * 2 - The owner is to be given access irrespective of mode bits for some
3424 * operations, so that processes that chmod after opening a file don't
3425 * break. I don't like this because it opens a security hole, but since
3426 * the nfs server opens a security hole the size of a barn door anyhow,
3429 * The exception to rule 2 is EPERM. If a file is IMMUTABLE, VOP_ACCESS()
3430 * will return EPERM instead of EACCESS. EPERM is always an error.
3433 nfsrv_access(vp, flags, cred, rdonly, p, override)
3434 register struct vnode *vp;
3436 register struct ucred *cred;
3443 if (flags & VWRITE) {
3444 /* Just vn_writechk() changed to check rdonly */
3446 * Disallow write attempts on read-only file systems;
3447 * unless the file is a socket or a block or character
3448 * device resident on the file system.
3450 if (rdonly || (vp->v_mount->mnt_flag & MNT_RDONLY)) {
3451 switch (vp->v_type) {
3461 * If there's shared text associated with
3462 * the inode, we can't allow writing.
3464 if (vp->v_flag & VTEXT)
3467 error = VOP_GETATTR(vp, &vattr, cred, p);
3470 error = VOP_ACCESS(vp, flags, cred, p);
3472 * Allow certain operations for the owner (reads and writes
3473 * on files that are already open).
3475 if (override && error == EACCES && cred->cr_uid == vattr.va_uid)
3479 #endif /* NFS_NOSERVER */