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 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
37 #include <sys/capability.h>
40 * Functions that perform the vfs operations required by the routines in
41 * nfsd_serv.c. It is hoped that this change will make the server more
45 #include <fs/nfs/nfsport.h>
47 #include <sys/sysctl.h>
48 #include <nlm/nlm_prot.h>
51 FEATURE(nfsd, "NFSv4 server");
53 extern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1;
54 extern int nfsrv_useacl;
55 extern int newnfs_numnfsd;
56 extern struct mount nfsv4root_mnt;
57 extern struct nfsrv_stablefirst nfsrv_stablefirst;
58 extern void (*nfsd_call_servertimer)(void);
59 extern SVCPOOL *nfsrvd_pool;
60 extern struct nfsv4lock nfsd_suspend_lock;
61 struct vfsoptlist nfsv4root_opt, nfsv4root_newopt;
63 struct mtx nfs_cache_mutex;
64 struct mtx nfs_v4root_mutex;
65 struct nfsrvfh nfs_rootfh, nfs_pubfh;
66 int nfs_pubfhset = 0, nfs_rootfhset = 0;
67 struct proc *nfsd_master_proc = NULL;
68 static pid_t nfsd_master_pid = (pid_t)-1;
69 static char nfsd_master_comm[MAXCOMLEN + 1];
70 static struct timeval nfsd_master_start;
71 static uint32_t nfsv4_sysid = 0;
73 static int nfssvc_srvcall(struct thread *, struct nfssvc_args *,
76 int nfsrv_enable_crossmntpt = 1;
77 static int nfs_commit_blks;
78 static int nfs_commit_miss;
79 extern int nfsrv_issuedelegs;
80 extern int nfsrv_dolocallocks;
82 SYSCTL_NODE(_vfs, OID_AUTO, nfsd, CTLFLAG_RW, 0, "New NFS server");
83 SYSCTL_INT(_vfs_nfsd, OID_AUTO, mirrormnt, CTLFLAG_RW,
84 &nfsrv_enable_crossmntpt, 0, "Enable nfsd to cross mount points");
85 SYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks,
87 SYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss,
89 SYSCTL_INT(_vfs_nfsd, OID_AUTO, issue_delegations, CTLFLAG_RW,
90 &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations");
91 SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_locallocks, CTLFLAG_RW,
92 &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files");
94 #define MAX_REORDERED_RPC 16
95 #define NUM_HEURISTIC 1031
98 #define NHUSE_MAX 2048
100 static struct nfsheur {
101 struct vnode *nh_vp; /* vp to match (unreferenced pointer) */
102 off_t nh_nextoff; /* next offset for sequential detection */
103 int nh_use; /* use count for selection */
104 int nh_seqcount; /* heuristic */
105 } nfsheur[NUM_HEURISTIC];
109 * Heuristic to detect sequential operation.
111 static struct nfsheur *
112 nfsrv_sequential_heuristic(struct uio *uio, struct vnode *vp)
117 /* Locate best candidate. */
119 hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC;
122 if (nfsheur[hi].nh_vp == vp) {
126 if (nfsheur[hi].nh_use > 0)
127 --nfsheur[hi].nh_use;
128 hi = (hi + 1) % NUM_HEURISTIC;
129 if (nfsheur[hi].nh_use < nh->nh_use)
133 /* Initialize hint if this is a new file. */
134 if (nh->nh_vp != vp) {
136 nh->nh_nextoff = uio->uio_offset;
137 nh->nh_use = NHUSE_INIT;
138 if (uio->uio_offset == 0)
144 /* Calculate heuristic. */
145 if ((uio->uio_offset == 0 && nh->nh_seqcount > 0) ||
146 uio->uio_offset == nh->nh_nextoff) {
147 /* See comments in vfs_vnops.c:sequential_heuristic(). */
148 nh->nh_seqcount += howmany(uio->uio_resid, 16384);
149 if (nh->nh_seqcount > IO_SEQMAX)
150 nh->nh_seqcount = IO_SEQMAX;
151 } else if (qabs(uio->uio_offset - nh->nh_nextoff) <= MAX_REORDERED_RPC *
152 imax(vp->v_mount->mnt_stat.f_iosize, uio->uio_resid)) {
153 /* Probably a reordered RPC, leave seqcount alone. */
154 } else if (nh->nh_seqcount > 1) {
155 nh->nh_seqcount /= 2;
159 nh->nh_use += NHUSE_INC;
160 if (nh->nh_use > NHUSE_MAX)
161 nh->nh_use = NHUSE_MAX;
166 * Get attributes into nfsvattr structure.
169 nfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred,
170 struct thread *p, int vpislocked)
172 int error, lockedit = 0;
174 if (vpislocked == 0) {
176 * When vpislocked == 0, the vnode is either exclusively
177 * locked by this thread or not locked by this thread.
178 * As such, shared lock it, if not exclusively locked.
180 if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) {
182 NFSVOPLOCK(vp, LK_SHARED | LK_RETRY);
185 error = VOP_GETATTR(vp, &nvap->na_vattr, cred);
194 * Get a file handle for a vnode.
197 nfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p)
201 NFSBZERO((caddr_t)fhp, sizeof(fhandle_t));
202 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
203 error = VOP_VPTOFH(vp, &fhp->fh_fid);
210 * Perform access checking for vnodes obtained from file handles that would
211 * refer to files already opened by a Unix client. You cannot just use
212 * vn_writechk() and VOP_ACCESSX() for two reasons.
213 * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write
215 * 2 - The owner is to be given access irrespective of mode bits for some
216 * operations, so that processes that chmod after opening a file don't
220 nfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred,
221 struct nfsexstuff *exp, struct thread *p, int override, int vpislocked,
222 u_int32_t *supportedtypep)
225 int error = 0, getret = 0;
227 if (vpislocked == 0) {
228 if (NFSVOPLOCK(vp, LK_SHARED) != 0) {
233 if (accmode & VWRITE) {
234 /* Just vn_writechk() changed to check rdonly */
236 * Disallow write attempts on read-only file systems;
237 * unless the file is a socket or a block or character
238 * device resident on the file system.
240 if (NFSVNO_EXRDONLY(exp) ||
241 (vp->v_mount->mnt_flag & MNT_RDONLY)) {
242 switch (vp->v_type) {
252 * If there's shared text associated with
253 * the inode, try to free it up once. If
254 * we fail, we can't allow writing.
256 if (VOP_IS_TEXT(vp) && error == 0)
266 * Should the override still be applied when ACLs are enabled?
268 error = VOP_ACCESSX(vp, accmode, cred, p);
269 if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) {
271 * Try again with VEXPLICIT_DENY, to see if the test for
272 * deletion is supported.
274 error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p);
276 if (vp->v_type == VDIR) {
277 accmode &= ~(VDELETE | VDELETE_CHILD);
279 error = VOP_ACCESSX(vp, accmode, cred, p);
280 } else if (supportedtypep != NULL) {
281 *supportedtypep &= ~NFSACCESS_DELETE;
287 * Allow certain operations for the owner (reads and writes
288 * on files that are already open).
290 if (override != NFSACCCHK_NOOVERRIDE &&
291 (error == EPERM || error == EACCES)) {
292 if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT))
294 else if (override & NFSACCCHK_ALLOWOWNER) {
295 getret = VOP_GETATTR(vp, &vattr, cred);
296 if (getret == 0 && cred->cr_uid == vattr.va_uid)
309 * Set attribute(s) vnop.
312 nfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred,
313 struct thread *p, struct nfsexstuff *exp)
317 error = VOP_SETATTR(vp, &nvap->na_vattr, cred);
323 * Set up nameidata for a lookup() call and do it.
326 nfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp,
327 struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p,
328 struct vnode **retdirp)
330 struct componentname *cnp = &ndp->ni_cnd;
334 int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen;
335 int error = 0, crossmnt;
339 cnp->cn_nameptr = cnp->cn_pnbuf;
340 ndp->ni_strictrelative = 0;
342 * Extract and set starting directory.
344 if (dp->v_type != VDIR) {
349 nfsvno_relpathbuf(ndp);
357 if (NFSVNO_EXRDONLY(exp))
358 cnp->cn_flags |= RDONLY;
359 ndp->ni_segflg = UIO_SYSSPACE;
362 if (nd->nd_flag & ND_PUBLOOKUP) {
364 if (cnp->cn_pnbuf[0] == '/') {
367 * Check for degenerate pathnames here, since lookup()
370 for (i = 1; i < ndp->ni_pathlen; i++)
371 if (cnp->cn_pnbuf[i] != '/')
373 if (i == ndp->ni_pathlen) {
374 error = NFSERR_ACCES;
380 } else if ((nfsrv_enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) ||
381 (nd->nd_flag & ND_NFSV4) == 0) {
383 * Only cross mount points for NFSv4 when doing a
384 * mount while traversing the file system above
385 * the mount point, unless nfsrv_enable_crossmntpt is set.
387 cnp->cn_flags |= NOCROSSMOUNT;
392 * Initialize for scan, set ni_startdir and bump ref on dp again
393 * becuase lookup() will dereference ni_startdir.
397 ndp->ni_startdir = dp;
398 ndp->ni_rootdir = rootvnode;
399 ndp->ni_topdir = NULL;
402 cnp->cn_flags |= LOCKLEAF;
404 cnp->cn_nameptr = cnp->cn_pnbuf;
406 * Call lookup() to do the real work. If an error occurs,
407 * ndp->ni_vp and ni_dvp are left uninitialized or NULL and
408 * we do not have to dereference anything before returning.
409 * In either case ni_startdir will be dereferenced and NULLed
417 * Check for encountering a symbolic link. Trivial
418 * termination occurs if no symlink encountered.
420 if ((cnp->cn_flags & ISSYMLINK) == 0) {
421 if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0)
422 nfsvno_relpathbuf(ndp);
423 if (ndp->ni_vp && !lockleaf)
424 NFSVOPUNLOCK(ndp->ni_vp, 0);
431 if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1)
432 NFSVOPUNLOCK(ndp->ni_dvp, 0);
433 if (!(nd->nd_flag & ND_PUBLOOKUP)) {
438 if (ndp->ni_loopcnt++ >= MAXSYMLINKS) {
442 if (ndp->ni_pathlen > 1)
443 cp = uma_zalloc(namei_zone, M_WAITOK);
447 aiov.iov_len = MAXPATHLEN;
448 auio.uio_iov = &aiov;
451 auio.uio_rw = UIO_READ;
452 auio.uio_segflg = UIO_SYSSPACE;
454 auio.uio_resid = MAXPATHLEN;
455 error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred);
458 if (ndp->ni_pathlen > 1)
459 uma_zfree(namei_zone, cp);
465 linklen = MAXPATHLEN - auio.uio_resid;
470 if (linklen + ndp->ni_pathlen >= MAXPATHLEN) {
471 error = ENAMETOOLONG;
476 * Adjust or replace path
478 if (ndp->ni_pathlen > 1) {
479 NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen);
480 uma_zfree(namei_zone, cnp->cn_pnbuf);
483 cnp->cn_pnbuf[linklen] = '\0';
484 ndp->ni_pathlen += linklen;
487 * Cleanup refs for next loop and check if root directory
488 * should replace current directory. Normally ni_dvp
489 * becomes the new base directory and is cleaned up when
490 * we loop. Explicitly null pointers after invalidation
491 * to clarify operation.
496 if (cnp->cn_pnbuf[0] == '/') {
498 ndp->ni_dvp = ndp->ni_rootdir;
501 ndp->ni_startdir = ndp->ni_dvp;
505 cnp->cn_flags &= ~LOCKLEAF;
509 nfsvno_relpathbuf(ndp);
512 ndp->ni_startdir = NULL;
513 } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) {
518 NFSEXITCODE2(error, nd);
523 * Set up a pathname buffer and return a pointer to it and, optionally
524 * set a hash pointer.
527 nfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp)
529 struct componentname *cnp = &ndp->ni_cnd;
531 cnp->cn_flags |= (NOMACCHECK | HASBUF);
532 cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK);
535 *bufpp = cnp->cn_pnbuf;
539 * Release the above path buffer, if not released by nfsvno_namei().
542 nfsvno_relpathbuf(struct nameidata *ndp)
545 if ((ndp->ni_cnd.cn_flags & HASBUF) == 0)
547 uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf);
548 ndp->ni_cnd.cn_flags &= ~HASBUF;
552 * Readlink vnode op into an mbuf list.
555 nfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p,
556 struct mbuf **mpp, struct mbuf **mpendp, int *lenp)
558 struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN];
559 struct iovec *ivp = iv;
560 struct uio io, *uiop = &io;
561 struct mbuf *mp, *mp2 = NULL, *mp3 = NULL;
562 int i, len, tlen, error = 0;
566 while (len < NFS_MAXPATHLEN) {
568 MCLGET(mp, M_WAITOK);
569 mp->m_len = NFSMSIZ(mp);
576 if ((len + mp->m_len) > NFS_MAXPATHLEN) {
577 mp->m_len = NFS_MAXPATHLEN - len;
578 len = NFS_MAXPATHLEN;
582 ivp->iov_base = mtod(mp, caddr_t);
583 ivp->iov_len = mp->m_len;
588 uiop->uio_iovcnt = i;
589 uiop->uio_offset = 0;
590 uiop->uio_resid = len;
591 uiop->uio_rw = UIO_READ;
592 uiop->uio_segflg = UIO_SYSSPACE;
594 error = VOP_READLINK(vp, uiop, cred);
600 if (uiop->uio_resid > 0) {
601 len -= uiop->uio_resid;
602 tlen = NFSM_RNDUP(len);
603 nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len);
615 * Read vnode op call into mbuf list.
618 nfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred,
619 struct thread *p, struct mbuf **mpp, struct mbuf **mpendp)
625 int error = 0, len, left, siz, tlen, ioflag = 0;
626 struct mbuf *m2 = NULL, *m3;
627 struct uio io, *uiop = &io;
630 len = left = NFSM_RNDUP(cnt);
633 * Generate the mbuf list with the uio_iov ref. to it.
640 siz = min(M_TRAILINGSPACE(m), left);
649 MALLOC(iv, struct iovec *, i * sizeof (struct iovec),
651 uiop->uio_iov = iv2 = iv;
657 panic("nfsvno_read iov");
658 siz = min(M_TRAILINGSPACE(m), left);
660 iv->iov_base = mtod(m, caddr_t) + m->m_len;
669 uiop->uio_iovcnt = i;
670 uiop->uio_offset = off;
671 uiop->uio_resid = len;
672 uiop->uio_rw = UIO_READ;
673 uiop->uio_segflg = UIO_SYSSPACE;
674 nh = nfsrv_sequential_heuristic(uiop, vp);
675 ioflag |= nh->nh_seqcount << IO_SEQSHIFT;
676 error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred);
677 FREE((caddr_t)iv2, M_TEMP);
683 nh->nh_nextoff = uiop->uio_offset;
684 tlen = len - uiop->uio_resid;
685 cnt = cnt < tlen ? cnt : tlen;
686 tlen = NFSM_RNDUP(cnt);
690 } else if (len != tlen || tlen != cnt)
691 nfsrv_adj(m3, len - tlen, tlen - cnt);
701 * Write vnode op from an mbuf list.
704 nfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int stable,
705 struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p)
711 struct uio io, *uiop = &io;
714 MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP,
716 uiop->uio_iov = iv = ivp;
717 uiop->uio_iovcnt = cnt;
718 i = mtod(mp, caddr_t) + mp->m_len - cp;
722 panic("nfsvno_write");
733 cp = mtod(mp, caddr_t);
737 if (stable == NFSWRITE_UNSTABLE)
738 ioflags = IO_NODELOCKED;
740 ioflags = (IO_SYNC | IO_NODELOCKED);
741 uiop->uio_resid = retlen;
742 uiop->uio_rw = UIO_WRITE;
743 uiop->uio_segflg = UIO_SYSSPACE;
745 uiop->uio_offset = off;
746 nh = nfsrv_sequential_heuristic(uiop, vp);
747 ioflags |= nh->nh_seqcount << IO_SEQSHIFT;
748 error = VOP_WRITE(vp, uiop, ioflags, cred);
750 nh->nh_nextoff = uiop->uio_offset;
751 FREE((caddr_t)iv, M_TEMP);
758 * Common code for creating a regular file (plus special files for V2).
761 nfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp,
762 struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp,
763 int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp)
768 error = nd->nd_repstat;
769 if (!error && ndp->ni_vp == NULL) {
770 if (nvap->na_type == VREG || nvap->na_type == VSOCK) {
771 vrele(ndp->ni_startdir);
772 error = VOP_CREATE(ndp->ni_dvp,
773 &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr);
775 nfsvno_relpathbuf(ndp);
777 if (*exclusive_flagp) {
778 *exclusive_flagp = 0;
779 NFSVNO_ATTRINIT(nvap);
780 nvap->na_atime.tv_sec = cverf[0];
781 nvap->na_atime.tv_nsec = cverf[1];
782 error = VOP_SETATTR(ndp->ni_vp,
783 &nvap->na_vattr, nd->nd_cred);
787 * NFS V2 Only. nfsrvd_mknod() does this for V3.
788 * (This implies, just get out on an error.)
790 } else if (nvap->na_type == VCHR || nvap->na_type == VBLK ||
791 nvap->na_type == VFIFO) {
792 if (nvap->na_type == VCHR && rdev == 0xffffffff)
793 nvap->na_type = VFIFO;
794 if (nvap->na_type != VFIFO &&
795 (error = priv_check_cred(nd->nd_cred,
796 PRIV_VFS_MKNOD_DEV, 0))) {
797 vrele(ndp->ni_startdir);
798 nfsvno_relpathbuf(ndp);
802 nvap->na_rdev = rdev;
803 error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp,
804 &ndp->ni_cnd, &nvap->na_vattr);
806 nfsvno_relpathbuf(ndp);
807 vrele(ndp->ni_startdir);
811 vrele(ndp->ni_startdir);
812 nfsvno_relpathbuf(ndp);
820 * Handle cases where error is already set and/or
822 * 1 - clean up the lookup
823 * 2 - iff !error and na_size set, truncate it
825 vrele(ndp->ni_startdir);
826 nfsvno_relpathbuf(ndp);
828 if (ndp->ni_dvp == *vpp)
832 if (!error && nvap->na_size != VNOVAL) {
833 error = nfsvno_accchk(*vpp, VWRITE,
834 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE,
835 NFSACCCHK_VPISLOCKED, NULL);
837 tempsize = nvap->na_size;
838 NFSVNO_ATTRINIT(nvap);
839 nvap->na_size = tempsize;
840 error = VOP_SETATTR(*vpp,
841 &nvap->na_vattr, nd->nd_cred);
854 * Do a mknod vnode op.
857 nfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred,
863 vtyp = nvap->na_type;
865 * Iff doesn't exist, create it.
868 vrele(ndp->ni_startdir);
869 nfsvno_relpathbuf(ndp);
875 if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) {
876 vrele(ndp->ni_startdir);
877 nfsvno_relpathbuf(ndp);
879 error = NFSERR_BADTYPE;
883 vrele(ndp->ni_startdir);
884 error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp,
885 &ndp->ni_cnd, &nvap->na_vattr);
887 nfsvno_relpathbuf(ndp);
889 if (nvap->na_type != VFIFO &&
890 (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) {
891 vrele(ndp->ni_startdir);
892 nfsvno_relpathbuf(ndp);
896 error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp,
897 &ndp->ni_cnd, &nvap->na_vattr);
899 nfsvno_relpathbuf(ndp);
900 vrele(ndp->ni_startdir);
902 * Since VOP_MKNOD returns the ni_vp, I can't
903 * see any reason to do the lookup.
916 nfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid,
917 struct ucred *cred, struct thread *p, struct nfsexstuff *exp)
921 if (ndp->ni_vp != NULL) {
922 if (ndp->ni_dvp == ndp->ni_vp)
927 nfsvno_relpathbuf(ndp);
931 error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd,
934 nfsvno_relpathbuf(ndp);
945 nfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp,
946 int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p,
947 struct nfsexstuff *exp)
952 vrele(ndp->ni_startdir);
953 nfsvno_relpathbuf(ndp);
954 if (ndp->ni_dvp == ndp->ni_vp)
963 error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd,
964 &nvap->na_vattr, pathcp);
966 vrele(ndp->ni_startdir);
967 nfsvno_relpathbuf(ndp);
969 * Although FreeBSD still had the lookup code in
970 * it for 7/current, there doesn't seem to be any
971 * point, since VOP_SYMLINK() returns the ni_vp.
972 * Just vput it for v2.
974 if (!not_v2 && !error)
983 * Parse symbolic link arguments.
984 * This function has an ugly side effect. It will MALLOC() an area for
985 * the symlink and set iov_base to point to it, only if it succeeds.
986 * So, if it returns with uiop->uio_iov->iov_base != NULL, that must
990 nfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap,
991 struct thread *p, char **pathcpp, int *lenp)
996 struct nfsv2_sattr *sp;
1000 if ((nd->nd_flag & ND_NFSV3) &&
1001 (error = nfsrv_sattr(nd, nvap, NULL, NULL, p)))
1003 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1004 len = fxdr_unsigned(int, *tl);
1005 if (len > NFS_MAXPATHLEN || len <= 0) {
1009 MALLOC(pathcp, caddr_t, len + 1, M_TEMP, M_WAITOK);
1010 error = nfsrv_mtostr(nd, pathcp, len);
1013 if (nd->nd_flag & ND_NFSV2) {
1014 NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
1015 nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode);
1019 NFSEXITCODE2(0, nd);
1023 free(pathcp, M_TEMP);
1024 NFSEXITCODE2(error, nd);
1029 * Remove a non-directory object.
1032 nfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred,
1033 struct thread *p, struct nfsexstuff *exp)
1039 if (vp->v_type == VDIR)
1040 error = NFSERR_ISDIR;
1042 error = nfsrv_checkremove(vp, 1, p);
1044 error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd);
1045 if (ndp->ni_dvp == vp)
1050 if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0)
1051 nfsvno_relpathbuf(ndp);
1057 * Remove a directory.
1060 nfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred,
1061 struct thread *p, struct nfsexstuff *exp)
1067 if (vp->v_type != VDIR) {
1072 * No rmdir "." please.
1074 if (ndp->ni_dvp == vp) {
1079 * The root of a mounted filesystem cannot be deleted.
1081 if (vp->v_vflag & VV_ROOT)
1085 error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd);
1086 if (ndp->ni_dvp == vp)
1091 if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0)
1092 nfsvno_relpathbuf(ndp);
1101 nfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp,
1102 u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p)
1104 struct vnode *fvp, *tvp, *tdvp;
1107 fvp = fromndp->ni_vp;
1109 vrele(fromndp->ni_dvp);
1114 tdvp = tondp->ni_dvp;
1117 if (fvp->v_type == VDIR && tvp->v_type != VDIR) {
1118 error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST;
1120 } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) {
1121 error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST;
1124 if (tvp->v_type == VDIR && tvp->v_mountedhere) {
1125 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV;
1130 * A rename to '.' or '..' results in a prematurely
1131 * unlocked vnode on FreeBSD5, so I'm just going to fail that
1134 if ((tondp->ni_cnd.cn_namelen == 1 &&
1135 tondp->ni_cnd.cn_nameptr[0] == '.') ||
1136 (tondp->ni_cnd.cn_namelen == 2 &&
1137 tondp->ni_cnd.cn_nameptr[0] == '.' &&
1138 tondp->ni_cnd.cn_nameptr[1] == '.')) {
1143 if (fvp->v_type == VDIR && fvp->v_mountedhere) {
1144 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV;
1147 if (fvp->v_mount != tdvp->v_mount) {
1148 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV;
1152 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL;
1157 * If source and destination are the same, there is nothing to
1158 * do. Set error to -1 to indicate this.
1163 if (ndflag & ND_NFSV4) {
1164 if (NFSVOPLOCK(fvp, LK_EXCLUSIVE) == 0) {
1165 error = nfsrv_checkremove(fvp, 0, p);
1166 NFSVOPUNLOCK(fvp, 0);
1170 error = nfsrv_checkremove(tvp, 1, p);
1173 * For NFSv2 and NFSv3, try to get rid of the delegation, so
1174 * that the NFSv4 client won't be confused by the rename.
1175 * Since nfsd_recalldelegation() can only be called on an
1176 * unlocked vnode at this point and fvp is the file that will
1177 * still exist after the rename, just do fvp.
1179 nfsd_recalldelegation(fvp, p);
1183 error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp,
1184 &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp,
1193 vrele(fromndp->ni_dvp);
1198 vrele(tondp->ni_startdir);
1199 nfsvno_relpathbuf(tondp);
1201 vrele(fromndp->ni_startdir);
1202 nfsvno_relpathbuf(fromndp);
1211 nfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred,
1212 struct thread *p, struct nfsexstuff *exp)
1222 if (vp->v_mount != xp->v_mount)
1226 NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY);
1227 if ((vp->v_iflag & VI_DOOMED) == 0)
1228 error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd);
1231 if (ndp->ni_dvp == vp)
1235 NFSVOPUNLOCK(vp, 0);
1237 if (ndp->ni_dvp == ndp->ni_vp)
1244 nfsvno_relpathbuf(ndp);
1250 * Do the fsync() appropriate for the commit.
1253 nfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred,
1259 * RFC 1813 3.3.21: if count is 0, a flush from offset to the end of
1260 * file is done. At this time VOP_FSYNC does not accept offset and
1261 * byte count parameters so call VOP_FSYNC the whole file for now.
1262 * The same is true for NFSv4: RFC 3530 Sec. 14.2.3.
1264 if (cnt == 0 || cnt > MAX_COMMIT_COUNT) {
1266 * Give up and do the whole thing
1269 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
1270 VM_OBJECT_WLOCK(vp->v_object);
1271 vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC);
1272 VM_OBJECT_WUNLOCK(vp->v_object);
1274 error = VOP_FSYNC(vp, MNT_WAIT, td);
1277 * Locate and synchronously write any buffers that fall
1278 * into the requested range. Note: we are assuming that
1279 * f_iosize is a power of 2.
1281 int iosize = vp->v_mount->mnt_stat.f_iosize;
1282 int iomask = iosize - 1;
1287 * Align to iosize boundry, super-align to page boundry.
1290 cnt += off & iomask;
1291 off &= ~(u_quad_t)iomask;
1293 if (off & PAGE_MASK) {
1294 cnt += off & PAGE_MASK;
1295 off &= ~(u_quad_t)PAGE_MASK;
1297 lblkno = off / iosize;
1300 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
1301 VM_OBJECT_WLOCK(vp->v_object);
1302 vm_object_page_clean(vp->v_object, off, off + cnt,
1304 VM_OBJECT_WUNLOCK(vp->v_object);
1313 * If we have a buffer and it is marked B_DELWRI we
1314 * have to lock and write it. Otherwise the prior
1315 * write is assumed to have already been committed.
1317 * gbincore() can return invalid buffers now so we
1318 * have to check that bit as well (though B_DELWRI
1319 * should not be set if B_INVAL is set there could be
1320 * a race here since we haven't locked the buffer).
1322 if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) {
1323 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL |
1324 LK_INTERLOCK, BO_MTX(bo)) == ENOLCK) {
1326 continue; /* retry */
1328 if ((bp->b_flags & (B_DELWRI|B_INVAL)) ==
1331 bp->b_flags &= ~B_ASYNC;
1354 nfsvno_statfs(struct vnode *vp, struct statfs *sf)
1358 error = VFS_STATFS(vp->v_mount, sf);
1361 * Since NFS handles these values as unsigned on the
1362 * wire, there is no way to represent negative values,
1363 * so set them to 0. Without this, they will appear
1364 * to be very large positive values for clients like
1367 if (sf->f_bavail < 0)
1369 if (sf->f_ffree < 0)
1377 * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but
1378 * must handle nfsrv_opencheck() calls after any other access checks.
1381 nfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp,
1382 nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp,
1383 int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create,
1384 NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p,
1385 struct nfsexstuff *exp, struct vnode **vpp)
1387 struct vnode *vp = NULL;
1389 struct nfsexstuff nes;
1391 if (ndp->ni_vp == NULL)
1392 nd->nd_repstat = nfsrv_opencheck(clientid,
1393 stateidp, stp, NULL, nd, p, nd->nd_repstat);
1394 if (!nd->nd_repstat) {
1395 if (ndp->ni_vp == NULL) {
1396 vrele(ndp->ni_startdir);
1397 nd->nd_repstat = VOP_CREATE(ndp->ni_dvp,
1398 &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr);
1400 nfsvno_relpathbuf(ndp);
1401 if (!nd->nd_repstat) {
1402 if (*exclusive_flagp) {
1403 *exclusive_flagp = 0;
1404 NFSVNO_ATTRINIT(nvap);
1405 nvap->na_atime.tv_sec = cverf[0];
1406 nvap->na_atime.tv_nsec = cverf[1];
1407 nd->nd_repstat = VOP_SETATTR(ndp->ni_vp,
1408 &nvap->na_vattr, cred);
1410 nfsrv_fixattr(nd, ndp->ni_vp, nvap,
1411 aclp, p, attrbitp, exp);
1416 if (ndp->ni_startdir)
1417 vrele(ndp->ni_startdir);
1418 nfsvno_relpathbuf(ndp);
1420 if (create == NFSV4OPEN_CREATE) {
1421 if (ndp->ni_dvp == vp)
1426 if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) {
1427 if (ndp->ni_cnd.cn_flags & RDONLY)
1428 NFSVNO_SETEXRDONLY(&nes);
1430 NFSVNO_EXINIT(&nes);
1431 nd->nd_repstat = nfsvno_accchk(vp,
1432 VWRITE, cred, &nes, p,
1433 NFSACCCHK_NOOVERRIDE,
1434 NFSACCCHK_VPISLOCKED, NULL);
1435 nd->nd_repstat = nfsrv_opencheck(clientid,
1436 stateidp, stp, vp, nd, p, nd->nd_repstat);
1437 if (!nd->nd_repstat) {
1438 tempsize = nvap->na_size;
1439 NFSVNO_ATTRINIT(nvap);
1440 nvap->na_size = tempsize;
1441 nd->nd_repstat = VOP_SETATTR(vp,
1442 &nvap->na_vattr, cred);
1444 } else if (vp->v_type == VREG) {
1445 nd->nd_repstat = nfsrv_opencheck(clientid,
1446 stateidp, stp, vp, nd, p, nd->nd_repstat);
1450 if (ndp->ni_cnd.cn_flags & HASBUF)
1451 nfsvno_relpathbuf(ndp);
1452 if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) {
1453 vrele(ndp->ni_startdir);
1454 if (ndp->ni_dvp == ndp->ni_vp)
1464 NFSEXITCODE2(0, nd);
1468 * Updates the file rev and sets the mtime and ctime
1469 * to the current clock time, returning the va_filerev and va_Xtime
1473 nfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap,
1474 struct ucred *cred, struct thread *p)
1479 vfs_timestamp(&va.va_mtime);
1480 (void) VOP_SETATTR(vp, &va, cred);
1481 (void) nfsvno_getattr(vp, nvap, cred, p, 1);
1485 * Glue routine to nfsv4_fillattr().
1488 nfsvno_fillattr(struct nfsrv_descript *nd, struct mount *mp, struct vnode *vp,
1489 struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp,
1490 struct ucred *cred, struct thread *p, int isdgram, int reterr,
1491 int supports_nfsv4acls, int at_root, uint64_t mounted_on_fileno)
1495 error = nfsv4_fillattr(nd, mp, vp, NULL, &nvap->na_vattr, fhp, rderror,
1496 attrbitp, cred, p, isdgram, reterr, supports_nfsv4acls, at_root,
1498 NFSEXITCODE2(0, nd);
1502 /* Since the Readdir vnode ops vary, put the entire functions in here. */
1504 * nfs readdir service
1505 * - mallocs what it thinks is enough to read
1506 * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR
1507 * - calls VOP_READDIR()
1508 * - loops around building the reply
1509 * if the output generated exceeds count break out of loop
1510 * The NFSM_CLGET macro is used here so that the reply will be packed
1511 * tightly in mbuf clusters.
1512 * - it trims out records with d_fileno == 0
1513 * this doesn't matter for Unix clients, but they might confuse clients
1515 * - it trims out records with d_type == DT_WHT
1516 * these cannot be seen through NFS (unless we extend the protocol)
1517 * The alternate call nfsrvd_readdirplus() does lookups as well.
1518 * PS: The NFS protocol spec. does not clarify what the "count" byte
1519 * argument is a count of.. just name strings and file id's or the
1520 * entire reply rpc or ...
1521 * I tried just file name and id sizes and it confused the Sun client,
1522 * so I am using the full rpc size now. The "paranoia.." comment refers
1523 * to including the status longwords that are not a part of the dir.
1524 * "entry" structures, but are in the rpc.
1527 nfsrvd_readdir(struct nfsrv_descript *nd, int isdgram,
1528 struct vnode *vp, struct thread *p, struct nfsexstuff *exp)
1533 char *cpos, *cend, *rbuf;
1535 int nlen, error = 0, getret = 1;
1536 int siz, cnt, fullsiz, eofflag, ncookies;
1537 u_int64_t off, toff, verf;
1538 u_long *cookies = NULL, *cookiep;
1543 if (nd->nd_repstat) {
1544 nfsrv_postopattr(nd, getret, &at);
1547 if (nd->nd_flag & ND_NFSV2) {
1548 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1549 off = fxdr_unsigned(u_quad_t, *tl++);
1551 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1552 off = fxdr_hyper(tl);
1554 verf = fxdr_hyper(tl);
1558 cnt = fxdr_unsigned(int, *tl);
1559 if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0)
1560 cnt = NFS_SRVMAXDATA(nd);
1561 siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
1563 if (nd->nd_flag & ND_NFSV3) {
1564 nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred,
1568 * va_filerev is not sufficient as a cookie verifier,
1569 * since it is not supposed to change when entries are
1570 * removed/added unless that offset cookies returned to
1571 * the client are no longer valid.
1573 if (!nd->nd_repstat && toff && verf != at.na_filerev)
1574 nd->nd_repstat = NFSERR_BAD_COOKIE;
1577 if (nd->nd_repstat == 0 && cnt == 0) {
1578 if (nd->nd_flag & ND_NFSV2)
1579 /* NFSv2 does not have NFSERR_TOOSMALL */
1580 nd->nd_repstat = EPERM;
1582 nd->nd_repstat = NFSERR_TOOSMALL;
1584 if (!nd->nd_repstat)
1585 nd->nd_repstat = nfsvno_accchk(vp, VEXEC,
1586 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE,
1587 NFSACCCHK_VPISLOCKED, NULL);
1588 if (nd->nd_repstat) {
1590 if (nd->nd_flag & ND_NFSV3)
1591 nfsrv_postopattr(nd, getret, &at);
1594 not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs");
1595 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
1599 free((caddr_t)cookies, M_TEMP);
1607 io.uio_offset = (off_t)off;
1609 io.uio_segflg = UIO_SYSSPACE;
1610 io.uio_rw = UIO_READ;
1612 nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies,
1614 off = (u_int64_t)io.uio_offset;
1616 siz -= io.uio_resid;
1618 if (!cookies && !nd->nd_repstat)
1619 nd->nd_repstat = NFSERR_PERM;
1620 if (nd->nd_flag & ND_NFSV3) {
1621 getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1);
1622 if (!nd->nd_repstat)
1623 nd->nd_repstat = getret;
1627 * Handles the failed cases. nd->nd_repstat == 0 past here.
1629 if (nd->nd_repstat) {
1631 free((caddr_t)rbuf, M_TEMP);
1633 free((caddr_t)cookies, M_TEMP);
1634 if (nd->nd_flag & ND_NFSV3)
1635 nfsrv_postopattr(nd, getret, &at);
1639 * If nothing read, return eof
1644 if (nd->nd_flag & ND_NFSV2) {
1645 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1647 nfsrv_postopattr(nd, getret, &at);
1648 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1649 txdr_hyper(at.na_filerev, tl);
1652 *tl++ = newnfs_false;
1654 FREE((caddr_t)rbuf, M_TEMP);
1655 FREE((caddr_t)cookies, M_TEMP);
1660 * Check for degenerate cases of nothing useful read.
1661 * If so go try again
1665 dp = (struct dirent *)cpos;
1669 * For some reason FreeBSD's ufs_readdir() chooses to back the
1670 * directory offset up to a block boundary, so it is necessary to
1671 * skip over the records that precede the requested offset. This
1672 * requires the assumption that file offset cookies monotonically
1674 * Since the offset cookies don't monotonically increase for ZFS,
1675 * this is not done when ZFS is the file system.
1677 while (cpos < cend && ncookies > 0 &&
1678 (dp->d_fileno == 0 || dp->d_type == DT_WHT ||
1679 (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff))) {
1680 cpos += dp->d_reclen;
1681 dp = (struct dirent *)cpos;
1685 if (cpos >= cend || ncookies == 0) {
1693 * dirlen is the size of the reply, including all XDR and must
1694 * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate
1695 * if the XDR should be included in "count", but to be safe, we do.
1696 * (Include the two booleans at the end of the reply in dirlen now.)
1698 if (nd->nd_flag & ND_NFSV3) {
1699 nfsrv_postopattr(nd, getret, &at);
1700 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1701 txdr_hyper(at.na_filerev, tl);
1702 dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED;
1704 dirlen = 2 * NFSX_UNSIGNED;
1707 /* Loop through the records and build reply */
1708 while (cpos < cend && ncookies > 0) {
1709 nlen = dp->d_namlen;
1710 if (dp->d_fileno != 0 && dp->d_type != DT_WHT &&
1711 nlen <= NFS_MAXNAMLEN) {
1712 if (nd->nd_flag & ND_NFSV3)
1713 dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen));
1715 dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen));
1722 * Build the directory record xdr from
1725 if (nd->nd_flag & ND_NFSV3) {
1726 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
1727 *tl++ = newnfs_true;
1730 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1731 *tl++ = newnfs_true;
1733 *tl = txdr_unsigned(dp->d_fileno);
1734 (void) nfsm_strtom(nd, dp->d_name, nlen);
1735 if (nd->nd_flag & ND_NFSV3) {
1736 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1739 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1740 *tl = txdr_unsigned(*cookiep);
1742 cpos += dp->d_reclen;
1743 dp = (struct dirent *)cpos;
1749 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1750 *tl++ = newnfs_false;
1755 FREE((caddr_t)rbuf, M_TEMP);
1756 FREE((caddr_t)cookies, M_TEMP);
1759 NFSEXITCODE2(0, nd);
1763 NFSEXITCODE2(error, nd);
1768 * Readdirplus for V3 and Readdir for V4.
1771 nfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram,
1772 struct vnode *vp, struct thread *p, struct nfsexstuff *exp)
1777 char *cpos, *cend, *rbuf;
1780 struct nfsvattr nva, at, *nvap = &nva;
1781 struct mbuf *mb0, *mb1;
1782 struct nfsreferral *refp;
1783 int nlen, r, error = 0, getret = 1, usevget = 1;
1784 int siz, cnt, fullsiz, eofflag, ncookies, entrycnt;
1785 caddr_t bpos0, bpos1;
1786 u_int64_t off, toff, verf;
1787 u_long *cookies = NULL, *cookiep;
1788 nfsattrbit_t attrbits, rderrbits, savbits;
1791 struct componentname cn;
1792 int at_root, needs_unbusy, not_zfs, supports_nfsv4acls;
1793 struct mount *mp, *new_mp;
1794 uint64_t mounted_on_fileno;
1796 if (nd->nd_repstat) {
1797 nfsrv_postopattr(nd, getret, &at);
1800 NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
1801 off = fxdr_hyper(tl);
1804 verf = fxdr_hyper(tl);
1806 siz = fxdr_unsigned(int, *tl++);
1807 cnt = fxdr_unsigned(int, *tl);
1810 * Use the server's maximum data transfer size as the upper bound
1813 if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0)
1814 cnt = NFS_SRVMAXDATA(nd);
1817 * siz is a "hint" of how much directory information (name, fileid,
1818 * cookie) should be in the reply. At least one client "hints" 0,
1819 * so I set it to cnt for that case. I also round it up to the
1820 * next multiple of DIRBLKSIZ.
1824 siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
1826 if (nd->nd_flag & ND_NFSV4) {
1827 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1830 NFSSET_ATTRBIT(&savbits, &attrbits);
1831 NFSCLRNOTFILLABLE_ATTRBIT(&attrbits);
1832 NFSZERO_ATTRBIT(&rderrbits);
1833 NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR);
1835 NFSZERO_ATTRBIT(&attrbits);
1838 nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1);
1839 if (!nd->nd_repstat) {
1840 if (off && verf != at.na_filerev) {
1842 * va_filerev is not sufficient as a cookie verifier,
1843 * since it is not supposed to change when entries are
1844 * removed/added unless that offset cookies returned to
1845 * the client are no longer valid.
1848 if (nd->nd_flag & ND_NFSV4) {
1849 nd->nd_repstat = NFSERR_NOTSAME;
1851 nd->nd_repstat = NFSERR_BAD_COOKIE;
1854 } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) {
1855 nd->nd_repstat = NFSERR_BAD_COOKIE;
1858 if (!nd->nd_repstat && vp->v_type != VDIR)
1859 nd->nd_repstat = NFSERR_NOTDIR;
1860 if (!nd->nd_repstat && cnt == 0)
1861 nd->nd_repstat = NFSERR_TOOSMALL;
1862 if (!nd->nd_repstat)
1863 nd->nd_repstat = nfsvno_accchk(vp, VEXEC,
1864 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE,
1865 NFSACCCHK_VPISLOCKED, NULL);
1866 if (nd->nd_repstat) {
1868 if (nd->nd_flag & ND_NFSV3)
1869 nfsrv_postopattr(nd, getret, &at);
1872 not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs");
1874 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
1878 free((caddr_t)cookies, M_TEMP);
1886 io.uio_offset = (off_t)off;
1888 io.uio_segflg = UIO_SYSSPACE;
1889 io.uio_rw = UIO_READ;
1891 nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies,
1893 off = (u_int64_t)io.uio_offset;
1895 siz -= io.uio_resid;
1897 getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1);
1899 if (!cookies && !nd->nd_repstat)
1900 nd->nd_repstat = NFSERR_PERM;
1901 if (!nd->nd_repstat)
1902 nd->nd_repstat = getret;
1903 if (nd->nd_repstat) {
1906 free((caddr_t)cookies, M_TEMP);
1907 free((caddr_t)rbuf, M_TEMP);
1908 if (nd->nd_flag & ND_NFSV3)
1909 nfsrv_postopattr(nd, getret, &at);
1913 * If nothing read, return eof
1918 if (nd->nd_flag & ND_NFSV3)
1919 nfsrv_postopattr(nd, getret, &at);
1920 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1921 txdr_hyper(at.na_filerev, tl);
1923 *tl++ = newnfs_false;
1925 free((caddr_t)cookies, M_TEMP);
1926 free((caddr_t)rbuf, M_TEMP);
1931 * Check for degenerate cases of nothing useful read.
1932 * If so go try again
1936 dp = (struct dirent *)cpos;
1940 * For some reason FreeBSD's ufs_readdir() chooses to back the
1941 * directory offset up to a block boundary, so it is necessary to
1942 * skip over the records that precede the requested offset. This
1943 * requires the assumption that file offset cookies monotonically
1945 * Since the offset cookies don't monotonically increase for ZFS,
1946 * this is not done when ZFS is the file system.
1948 while (cpos < cend && ncookies > 0 &&
1949 (dp->d_fileno == 0 || dp->d_type == DT_WHT ||
1950 (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff) ||
1951 ((nd->nd_flag & ND_NFSV4) &&
1952 ((dp->d_namlen == 1 && dp->d_name[0] == '.') ||
1953 (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) {
1954 cpos += dp->d_reclen;
1955 dp = (struct dirent *)cpos;
1959 if (cpos >= cend || ncookies == 0) {
1966 * Busy the file system so that the mount point won't go away
1967 * and, as such, VFS_VGET() can be used safely.
1971 NFSVOPUNLOCK(vp, 0);
1972 nd->nd_repstat = vfs_busy(mp, 0);
1974 if (nd->nd_repstat != 0) {
1976 free(cookies, M_TEMP);
1978 if (nd->nd_flag & ND_NFSV3)
1979 nfsrv_postopattr(nd, getret, &at);
1984 * Save this position, in case there is an error before one entry
1988 bpos0 = nd->nd_bpos;
1991 * Fill in the first part of the reply.
1992 * dirlen is the reply length in bytes and cannot exceed cnt.
1993 * (Include the two booleans at the end of the reply in dirlen now,
1994 * so we recognize when we have exceeded cnt.)
1996 if (nd->nd_flag & ND_NFSV3) {
1997 dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED;
1998 nfsrv_postopattr(nd, getret, &at);
2000 dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED;
2002 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
2003 txdr_hyper(at.na_filerev, tl);
2006 * Save this position, in case there is an empty reply needed.
2009 bpos1 = nd->nd_bpos;
2011 /* Loop through the records and build reply */
2013 while (cpos < cend && ncookies > 0 && dirlen < cnt) {
2014 nlen = dp->d_namlen;
2015 if (dp->d_fileno != 0 && dp->d_type != DT_WHT &&
2016 nlen <= NFS_MAXNAMLEN &&
2017 ((nd->nd_flag & ND_NFSV3) || nlen > 2 ||
2018 (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.'))
2019 || (nlen == 1 && dp->d_name[0] != '.'))) {
2021 * Save the current position in the reply, in case
2022 * this entry exceeds cnt.
2025 bpos1 = nd->nd_bpos;
2028 * For readdir_and_lookup get the vnode using
2037 mounted_on_fileno = (uint64_t)dp->d_fileno;
2038 if ((nd->nd_flag & ND_NFSV3) ||
2039 NFSNONZERO_ATTRBIT(&savbits)) {
2040 if (nd->nd_flag & ND_NFSV4)
2041 refp = nfsv4root_getreferral(NULL,
2045 r = VFS_VGET(mp, dp->d_fileno,
2049 if (r == EOPNOTSUPP) {
2052 cn.cn_nameiop = LOOKUP;
2060 cn.cn_nameptr = dp->d_name;
2061 cn.cn_namelen = nlen;
2062 cn.cn_flags = ISLASTCN |
2063 NOFOLLOW | LOCKLEAF;
2065 dp->d_name[0] == '.' &&
2066 dp->d_name[1] == '.')
2069 if (NFSVOPLOCK(vp, LK_SHARED)
2071 nd->nd_repstat = EPERM;
2074 if ((vp->v_vflag & VV_ROOT) != 0
2075 && (cn.cn_flags & ISDOTDOT)
2081 r = VOP_LOOKUP(vp, &nvp,
2090 * For NFSv4, check to see if nvp is
2091 * a mount point and get the mount
2092 * point vnode, as required.
2095 nfsrv_enable_crossmntpt != 0 &&
2096 (nd->nd_flag & ND_NFSV4) != 0 &&
2097 nvp->v_type == VDIR &&
2098 nvp->v_mountedhere != NULL) {
2099 new_mp = nvp->v_mountedhere;
2100 r = vfs_busy(new_mp, 0);
2104 r = VFS_ROOT(new_mp,
2114 ((nd->nd_flag & ND_NFSV3) ||
2115 NFSNONZERO_ATTRBIT(&attrbits))) {
2116 r = nfsvno_getfh(nvp, &nfh, p);
2118 r = nfsvno_getattr(nvp, nvap,
2125 if (!NFSISSET_ATTRBIT(&attrbits,
2126 NFSATTRBIT_RDATTRERROR)) {
2129 if (needs_unbusy != 0)
2138 * Build the directory record xdr
2140 if (nd->nd_flag & ND_NFSV3) {
2141 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
2142 *tl++ = newnfs_true;
2144 *tl = txdr_unsigned(dp->d_fileno);
2145 dirlen += nfsm_strtom(nd, dp->d_name, nlen);
2146 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2148 *tl = txdr_unsigned(*cookiep);
2149 nfsrv_postopattr(nd, 0, nvap);
2150 dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1);
2151 dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR);
2155 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
2156 *tl++ = newnfs_true;
2158 *tl = txdr_unsigned(*cookiep);
2159 dirlen += nfsm_strtom(nd, dp->d_name, nlen);
2161 supports_nfsv4acls =
2162 nfs_supportsnfsv4acls(nvp);
2163 NFSVOPUNLOCK(nvp, 0);
2165 supports_nfsv4acls = 0;
2167 dirlen += nfsrv_putreferralattr(nd,
2170 if (nd->nd_repstat) {
2173 if (needs_unbusy != 0)
2178 dirlen += nfsvno_fillattr(nd, new_mp,
2179 nvp, nvap, &nfh, r, &rderrbits,
2180 nd->nd_cred, p, isdgram, 0,
2181 supports_nfsv4acls, at_root,
2184 dirlen += nfsvno_fillattr(nd, new_mp,
2185 nvp, nvap, &nfh, r, &attrbits,
2186 nd->nd_cred, p, isdgram, 0,
2187 supports_nfsv4acls, at_root,
2192 dirlen += (3 * NFSX_UNSIGNED);
2194 if (needs_unbusy != 0)
2199 cpos += dp->d_reclen;
2200 dp = (struct dirent *)cpos;
2208 * If dirlen > cnt, we must strip off the last entry. If that
2209 * results in an empty reply, report NFSERR_TOOSMALL.
2211 if (dirlen > cnt || nd->nd_repstat) {
2212 if (!nd->nd_repstat && entrycnt == 0)
2213 nd->nd_repstat = NFSERR_TOOSMALL;
2215 newnfs_trimtrailing(nd, mb0, bpos0);
2217 newnfs_trimtrailing(nd, mb1, bpos1);
2219 } else if (cpos < cend)
2221 if (!nd->nd_repstat) {
2222 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2223 *tl++ = newnfs_false;
2229 FREE((caddr_t)cookies, M_TEMP);
2230 FREE((caddr_t)rbuf, M_TEMP);
2233 NFSEXITCODE2(0, nd);
2237 NFSEXITCODE2(error, nd);
2242 * Get the settable attributes out of the mbuf list.
2243 * (Return 0 or EBADRPC)
2246 nfsrv_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap,
2247 nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p)
2250 struct nfsv2_sattr *sp;
2251 int error = 0, toclient = 0;
2253 switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) {
2255 NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
2257 * Some old clients didn't fill in the high order 16bits.
2258 * --> check the low order 2 bytes for 0xffff
2260 if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff)
2261 nvap->na_mode = nfstov_mode(sp->sa_mode);
2262 if (sp->sa_uid != newnfs_xdrneg1)
2263 nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid);
2264 if (sp->sa_gid != newnfs_xdrneg1)
2265 nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid);
2266 if (sp->sa_size != newnfs_xdrneg1)
2267 nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size);
2268 if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) {
2270 fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime);
2272 nvap->na_atime.tv_sec =
2273 fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec);
2274 nvap->na_atime.tv_nsec = 0;
2277 if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1)
2278 fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime);
2281 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2282 if (*tl == newnfs_true) {
2283 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2284 nvap->na_mode = nfstov_mode(*tl);
2286 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2287 if (*tl == newnfs_true) {
2288 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2289 nvap->na_uid = fxdr_unsigned(uid_t, *tl);
2291 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2292 if (*tl == newnfs_true) {
2293 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2294 nvap->na_gid = fxdr_unsigned(gid_t, *tl);
2296 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2297 if (*tl == newnfs_true) {
2298 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2299 nvap->na_size = fxdr_hyper(tl);
2301 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2302 switch (fxdr_unsigned(int, *tl)) {
2303 case NFSV3SATTRTIME_TOCLIENT:
2304 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2305 fxdr_nfsv3time(tl, &nvap->na_atime);
2308 case NFSV3SATTRTIME_TOSERVER:
2309 vfs_timestamp(&nvap->na_atime);
2310 nvap->na_vaflags |= VA_UTIMES_NULL;
2313 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2314 switch (fxdr_unsigned(int, *tl)) {
2315 case NFSV3SATTRTIME_TOCLIENT:
2316 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2317 fxdr_nfsv3time(tl, &nvap->na_mtime);
2318 nvap->na_vaflags &= ~VA_UTIMES_NULL;
2320 case NFSV3SATTRTIME_TOSERVER:
2321 vfs_timestamp(&nvap->na_mtime);
2323 nvap->na_vaflags |= VA_UTIMES_NULL;
2328 error = nfsv4_sattr(nd, nvap, attrbitp, aclp, p);
2331 NFSEXITCODE2(error, nd);
2336 * Handle the setable attributes for V4.
2337 * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise.
2340 nfsv4_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap,
2341 nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p)
2346 int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0;
2348 u_char *cp, namestr[NFSV4_SMALLSTR + 1];
2352 error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup);
2355 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2356 attrsize = fxdr_unsigned(int, *tl);
2359 * Loop around getting the setable attributes. If an unsupported
2360 * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return.
2363 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2364 bitpos = NFSATTRBIT_MAX;
2368 for (; bitpos < NFSATTRBIT_MAX; bitpos++) {
2369 if (attrsum > attrsize) {
2370 error = NFSERR_BADXDR;
2373 if (NFSISSET_ATTRBIT(attrbitp, bitpos))
2375 case NFSATTRBIT_SIZE:
2376 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER);
2377 nvap->na_size = fxdr_hyper(tl);
2378 attrsum += NFSX_HYPER;
2380 case NFSATTRBIT_ACL:
2381 error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize,
2385 if (aceerr && !nd->nd_repstat)
2386 nd->nd_repstat = aceerr;
2389 case NFSATTRBIT_ARCHIVE:
2390 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2391 if (!nd->nd_repstat)
2392 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2393 attrsum += NFSX_UNSIGNED;
2395 case NFSATTRBIT_HIDDEN:
2396 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2397 if (!nd->nd_repstat)
2398 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2399 attrsum += NFSX_UNSIGNED;
2401 case NFSATTRBIT_MIMETYPE:
2402 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2403 i = fxdr_unsigned(int, *tl);
2404 error = nfsm_advance(nd, NFSM_RNDUP(i), -1);
2407 if (!nd->nd_repstat)
2408 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2409 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i));
2411 case NFSATTRBIT_MODE:
2412 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2413 nvap->na_mode = nfstov_mode(*tl);
2414 attrsum += NFSX_UNSIGNED;
2416 case NFSATTRBIT_OWNER:
2417 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2418 j = fxdr_unsigned(int, *tl);
2420 error = NFSERR_BADXDR;
2423 if (j > NFSV4_SMALLSTR)
2424 cp = malloc(j + 1, M_NFSSTRING, M_WAITOK);
2427 error = nfsrv_mtostr(nd, cp, j);
2429 if (j > NFSV4_SMALLSTR)
2430 free(cp, M_NFSSTRING);
2433 if (!nd->nd_repstat) {
2434 nd->nd_repstat = nfsv4_strtouid(nd, cp, j, &uid,
2436 if (!nd->nd_repstat)
2439 if (j > NFSV4_SMALLSTR)
2440 free(cp, M_NFSSTRING);
2441 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j));
2443 case NFSATTRBIT_OWNERGROUP:
2444 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2445 j = fxdr_unsigned(int, *tl);
2447 error = NFSERR_BADXDR;
2450 if (j > NFSV4_SMALLSTR)
2451 cp = malloc(j + 1, M_NFSSTRING, M_WAITOK);
2454 error = nfsrv_mtostr(nd, cp, j);
2456 if (j > NFSV4_SMALLSTR)
2457 free(cp, M_NFSSTRING);
2460 if (!nd->nd_repstat) {
2461 nd->nd_repstat = nfsv4_strtogid(nd, cp, j, &gid,
2463 if (!nd->nd_repstat)
2466 if (j > NFSV4_SMALLSTR)
2467 free(cp, M_NFSSTRING);
2468 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j));
2470 case NFSATTRBIT_SYSTEM:
2471 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2472 if (!nd->nd_repstat)
2473 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2474 attrsum += NFSX_UNSIGNED;
2476 case NFSATTRBIT_TIMEACCESSSET:
2477 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2478 attrsum += NFSX_UNSIGNED;
2479 if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) {
2480 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
2481 fxdr_nfsv4time(tl, &nvap->na_atime);
2483 attrsum += NFSX_V4TIME;
2485 vfs_timestamp(&nvap->na_atime);
2486 nvap->na_vaflags |= VA_UTIMES_NULL;
2489 case NFSATTRBIT_TIMEBACKUP:
2490 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
2491 if (!nd->nd_repstat)
2492 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2493 attrsum += NFSX_V4TIME;
2495 case NFSATTRBIT_TIMECREATE:
2496 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
2497 if (!nd->nd_repstat)
2498 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2499 attrsum += NFSX_V4TIME;
2501 case NFSATTRBIT_TIMEMODIFYSET:
2502 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2503 attrsum += NFSX_UNSIGNED;
2504 if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) {
2505 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
2506 fxdr_nfsv4time(tl, &nvap->na_mtime);
2507 nvap->na_vaflags &= ~VA_UTIMES_NULL;
2508 attrsum += NFSX_V4TIME;
2510 vfs_timestamp(&nvap->na_mtime);
2512 nvap->na_vaflags |= VA_UTIMES_NULL;
2516 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2518 * set bitpos so we drop out of the loop.
2520 bitpos = NFSATTRBIT_MAX;
2526 * some clients pad the attrlist, so we need to skip over the
2529 if (attrsum > attrsize) {
2530 error = NFSERR_BADXDR;
2532 attrsize = NFSM_RNDUP(attrsize);
2533 if (attrsum < attrsize)
2534 error = nfsm_advance(nd, attrsize - attrsum, -1);
2537 NFSEXITCODE2(error, nd);
2542 * Check/setup export credentials.
2545 nfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp,
2546 struct ucred *credanon)
2551 * Check/setup credentials.
2553 if (nd->nd_flag & ND_GSS)
2554 exp->nes_exflag &= ~MNT_EXPORTANON;
2557 * Check to see if the operation is allowed for this security flavor.
2558 * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to
2559 * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS.
2560 * Also, allow Secinfo, so that it can acquire the correct flavor(s).
2562 if (nfsvno_testexp(nd, exp) &&
2563 nd->nd_procnum != NFSV4OP_SECINFO &&
2564 nd->nd_procnum != NFSPROC_FSINFO) {
2565 if (nd->nd_flag & ND_NFSV4)
2566 error = NFSERR_WRONGSEC;
2568 error = (NFSERR_AUTHERR | AUTH_TOOWEAK);
2573 * Check to see if the file system is exported V4 only.
2575 if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) {
2576 error = NFSERR_PROGNOTV4;
2581 * Now, map the user credentials.
2582 * (Note that ND_AUTHNONE will only be set for an NFSv3
2583 * Fsinfo RPC. If set for anything else, this code might need
2586 if (NFSVNO_EXPORTED(exp) &&
2587 ((!(nd->nd_flag & ND_GSS) && nd->nd_cred->cr_uid == 0) ||
2588 NFSVNO_EXPORTANON(exp) ||
2589 (nd->nd_flag & ND_AUTHNONE))) {
2590 nd->nd_cred->cr_uid = credanon->cr_uid;
2591 nd->nd_cred->cr_gid = credanon->cr_gid;
2592 crsetgroups(nd->nd_cred, credanon->cr_ngroups,
2593 credanon->cr_groups);
2597 NFSEXITCODE2(error, nd);
2605 nfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp,
2606 struct ucred **credp)
2608 int i, error, *secflavors;
2610 error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp,
2611 &exp->nes_numsecflavor, &secflavors);
2613 if (nfs_rootfhset) {
2614 exp->nes_exflag = 0;
2615 exp->nes_numsecflavor = 0;
2619 /* Copy the security flavors. */
2620 for (i = 0; i < exp->nes_numsecflavor; i++)
2621 exp->nes_secflavors[i] = secflavors[i];
2628 * Get a vnode for a file handle and export stuff.
2631 nfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam,
2632 int lktype, struct vnode **vpp, struct nfsexstuff *exp,
2633 struct ucred **credp)
2635 int i, error, *secflavors;
2638 exp->nes_numsecflavor = 0;
2639 error = VFS_FHTOVP(mp, &fhp->fh_fid, lktype, vpp);
2641 /* Make sure the server replies ESTALE to the client. */
2643 if (nam && !error) {
2644 error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp,
2645 &exp->nes_numsecflavor, &secflavors);
2647 if (nfs_rootfhset) {
2648 exp->nes_exflag = 0;
2649 exp->nes_numsecflavor = 0;
2655 /* Copy the security flavors. */
2656 for (i = 0; i < exp->nes_numsecflavor; i++)
2657 exp->nes_secflavors[i] = secflavors[i];
2665 * nfsd_fhtovp() - convert a fh to a vnode ptr
2666 * - look up fsid in mount list (if not found ret error)
2667 * - get vp and export rights by calling nfsvno_fhtovp()
2668 * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon
2670 * - if mpp != NULL, return the mount point so that it can
2671 * be used for vn_finished_write() by the caller
2674 nfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype,
2675 struct vnode **vpp, struct nfsexstuff *exp,
2676 struct mount **mpp, int startwrite, struct thread *p)
2679 struct ucred *credanon;
2682 fhp = (fhandle_t *)nfp->nfsrvfh_data;
2684 * Check for the special case of the nfsv4root_fh.
2686 mp = vfs_busyfs(&fhp->fh_fsid);
2691 nd->nd_repstat = ESTALE;
2696 vn_start_write(NULL, mpp, V_WAIT);
2698 nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp,
2703 * For NFSv4 without a pseudo root fs, unexported file handles
2704 * can be returned, so that Lookup works everywhere.
2706 if (!nd->nd_repstat && exp->nes_exflag == 0 &&
2707 !(nd->nd_flag & ND_NFSV4)) {
2709 nd->nd_repstat = EACCES;
2713 * Personally, I've never seen any point in requiring a
2714 * reserved port#, since only in the rare case where the
2715 * clients are all boxes with secure system priviledges,
2716 * does it provide any enhanced security, but... some people
2717 * believe it to be useful and keep putting this code back in.
2718 * (There is also some "security checker" out there that
2719 * complains if the nfs server doesn't enforce this.)
2720 * However, note the following:
2721 * RFC3530 (NFSv4) specifies that a reserved port# not be
2723 * RFC2623 recommends that, if a reserved port# is checked for,
2724 * that there be a way to turn that off--> ifdef'd.
2726 #ifdef NFS_REQRSVPORT
2727 if (!nd->nd_repstat) {
2728 struct sockaddr_in *saddr;
2729 struct sockaddr_in6 *saddr6;
2731 saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *);
2732 saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *);
2733 if (!(nd->nd_flag & ND_NFSV4) &&
2734 ((saddr->sin_family == AF_INET &&
2735 ntohs(saddr->sin_port) >= IPPORT_RESERVED) ||
2736 (saddr6->sin6_family == AF_INET6 &&
2737 ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) {
2739 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK);
2742 #endif /* NFS_REQRSVPORT */
2745 * Check/setup credentials.
2747 if (!nd->nd_repstat) {
2748 nd->nd_saveduid = nd->nd_cred->cr_uid;
2749 nd->nd_repstat = nfsd_excred(nd, exp, credanon);
2753 if (credanon != NULL)
2755 if (nd->nd_repstat) {
2757 vn_finished_write(mp);
2764 NFSEXITCODE2(0, nd);
2771 fp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp)
2773 struct filedesc *fdp;
2777 fdp = p->td_proc->p_fd;
2778 if (fd >= fdp->fd_nfiles ||
2779 (fp = fdp->fd_ofiles[fd]) == NULL) {
2791 * Called from nfssvc() to update the exports list. Just call
2792 * vfs_export(). This has to be done, since the v4 root fake fs isn't
2793 * in the mount list.
2796 nfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p)
2798 struct nfsex_args *nfsexargp = (struct nfsex_args *)argp;
2800 struct nameidata nd;
2803 error = vfs_export(&nfsv4root_mnt, &nfsexargp->export);
2804 if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0)
2806 else if (error == 0) {
2807 if (nfsexargp->fspec == NULL) {
2812 * If fspec != NULL, this is the v4root path.
2814 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE,
2815 nfsexargp->fspec, p);
2816 if ((error = namei(&nd)) != 0)
2818 error = nfsvno_getfh(nd.ni_vp, &fh, p);
2821 nfs_rootfh.nfsrvfh_len = NFSX_MYFH;
2822 NFSBCOPY((caddr_t)&fh,
2823 nfs_rootfh.nfsrvfh_data,
2824 sizeof (fhandle_t));
2835 * Get the tcp socket sequence numbers we need.
2836 * (Maybe this should be moved to the tcp sources?)
2839 nfsrv_getsocksndseq(struct socket *so, tcp_seq *maxp, tcp_seq *unap)
2845 inp = sotoinpcb(so);
2846 KASSERT(inp != NULL, ("nfsrv_getsocksndseq: inp == NULL"));
2848 if (inp->inp_flags & (INP_TIMEWAIT | INP_DROPPED)) {
2853 tp = intotcpcb(inp);
2854 if (tp->t_state != TCPS_ESTABLISHED) {
2859 *maxp = tp->snd_max;
2860 *unap = tp->snd_una;
2869 * This function needs to test to see if the system is near its limit
2870 * for memory allocation via malloc() or mget() and return True iff
2871 * either of these resources are near their limit.
2872 * XXX (For now, this is just a stub.)
2874 int nfsrv_testmalloclimit = 0;
2876 nfsrv_mallocmget_limit(void)
2878 static int printmesg = 0;
2879 static int testval = 1;
2881 if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) {
2882 if ((printmesg++ % 100) == 0)
2883 printf("nfsd: malloc/mget near limit\n");
2890 * BSD specific initialization of a mount point.
2895 static int inited = 0;
2900 nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED);
2901 TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist);
2902 TAILQ_INIT(&nfsv4root_mnt.mnt_activevnodelist);
2903 nfsv4root_mnt.mnt_export = NULL;
2904 TAILQ_INIT(&nfsv4root_opt);
2905 TAILQ_INIT(&nfsv4root_newopt);
2906 nfsv4root_mnt.mnt_opt = &nfsv4root_opt;
2907 nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt;
2908 nfsv4root_mnt.mnt_nvnodelistsize = 0;
2909 nfsv4root_mnt.mnt_activevnodelistsize = 0;
2913 * Get a vnode for a file handle, without checking exports, etc.
2916 nfsvno_getvp(fhandle_t *fhp)
2922 mp = vfs_busyfs(&fhp->fh_fsid);
2925 error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, &vp);
2933 * Do a local VOP_ADVLOCK().
2936 nfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first,
2937 u_int64_t end, struct thread *td)
2943 if (nfsrv_dolocallocks == 0)
2946 /* Check for VI_DOOMED here, so that VOP_ADVLOCK() isn't performed. */
2947 if ((vp->v_iflag & VI_DOOMED) != 0) {
2952 fl.l_whence = SEEK_SET;
2954 fl.l_start = (off_t)first;
2955 if (end == NFS64BITSSET) {
2959 fl.l_len = (off_t)tlen;
2962 * For FreeBSD8, the l_pid and l_sysid must be set to the same
2963 * values for all calls, so that all locks will be held by the
2964 * nfsd server. (The nfsd server handles conflicts between the
2966 * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024
2967 * bytes, so it can't be put in l_sysid.
2969 if (nfsv4_sysid == 0)
2970 nfsv4_sysid = nlm_acquire_next_sysid();
2971 fl.l_pid = (pid_t)0;
2972 fl.l_sysid = (int)nfsv4_sysid;
2974 NFSVOPUNLOCK(vp, 0);
2975 if (ftype == F_UNLCK)
2976 error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl,
2977 (F_POSIX | F_REMOTE));
2979 error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl,
2980 (F_POSIX | F_REMOTE));
2981 NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY);
2989 * Check the nfsv4 root exports.
2992 nfsvno_v4rootexport(struct nfsrv_descript *nd)
2994 struct ucred *credanon;
2995 int exflags, error = 0, numsecflavor, *secflavors, i;
2997 error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags,
2998 &credanon, &numsecflavor, &secflavors);
3000 error = NFSERR_PROGUNAVAIL;
3003 if (credanon != NULL)
3005 for (i = 0; i < numsecflavor; i++) {
3006 if (secflavors[i] == AUTH_SYS)
3007 nd->nd_flag |= ND_EXAUTHSYS;
3008 else if (secflavors[i] == RPCSEC_GSS_KRB5)
3009 nd->nd_flag |= ND_EXGSS;
3010 else if (secflavors[i] == RPCSEC_GSS_KRB5I)
3011 nd->nd_flag |= ND_EXGSSINTEGRITY;
3012 else if (secflavors[i] == RPCSEC_GSS_KRB5P)
3013 nd->nd_flag |= ND_EXGSSPRIVACY;
3022 * Nfs server psuedo system call for the nfsd's
3028 nfssvc_nfsd(struct thread *td, struct nfssvc_args *uap)
3031 struct nfsd_addsock_args sockarg;
3032 struct nfsd_nfsd_args nfsdarg;
3035 if (uap->flag & NFSSVC_NFSDADDSOCK) {
3036 error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg));
3040 * Since we don't know what rights might be required,
3041 * pretend that we need them all. It is better to be too
3042 * careful than too reckless.
3044 if ((error = fget(td, sockarg.sock, CAP_SOCK_ALL, &fp)) != 0)
3046 if (fp->f_type != DTYPE_SOCKET) {
3051 error = nfsrvd_addsock(fp);
3053 } else if (uap->flag & NFSSVC_NFSDNFSD) {
3054 if (uap->argp == NULL) {
3058 error = copyin(uap->argp, (caddr_t)&nfsdarg,
3062 error = nfsrvd_nfsd(td, &nfsdarg);
3064 error = nfssvc_srvcall(td, uap, td->td_ucred);
3073 nfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred)
3075 struct nfsex_args export;
3076 struct file *fp = NULL;
3078 struct nfsd_clid adminrevoke;
3079 struct nfsd_dumplist dumplist;
3080 struct nfsd_dumpclients *dumpclients;
3081 struct nfsd_dumplocklist dumplocklist;
3082 struct nfsd_dumplocks *dumplocks;
3083 struct nameidata nd;
3085 int error = EINVAL, igotlock;
3087 static int suspend_nfsd = 0;
3089 if (uap->flag & NFSSVC_PUBLICFH) {
3090 NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data,
3091 sizeof (fhandle_t));
3092 error = copyin(uap->argp,
3093 &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t));
3096 } else if (uap->flag & NFSSVC_V4ROOTEXPORT) {
3097 error = copyin(uap->argp,(caddr_t)&export,
3098 sizeof (struct nfsex_args));
3100 error = nfsrv_v4rootexport(&export, cred, p);
3101 } else if (uap->flag & NFSSVC_NOPUBLICFH) {
3104 } else if (uap->flag & NFSSVC_STABLERESTART) {
3105 error = copyin(uap->argp, (caddr_t)&stablefd,
3108 error = fp_getfvp(p, stablefd, &fp, &vp);
3109 if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE))
3111 if (!error && newnfs_numnfsd != 0)
3114 nfsrv_stablefirst.nsf_fp = fp;
3115 nfsrv_setupstable(p);
3117 } else if (uap->flag & NFSSVC_ADMINREVOKE) {
3118 error = copyin(uap->argp, (caddr_t)&adminrevoke,
3119 sizeof (struct nfsd_clid));
3121 error = nfsrv_adminrevoke(&adminrevoke, p);
3122 } else if (uap->flag & NFSSVC_DUMPCLIENTS) {
3123 error = copyin(uap->argp, (caddr_t)&dumplist,
3124 sizeof (struct nfsd_dumplist));
3125 if (!error && (dumplist.ndl_size < 1 ||
3126 dumplist.ndl_size > NFSRV_MAXDUMPLIST))
3129 len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size;
3130 dumpclients = (struct nfsd_dumpclients *)malloc(len,
3132 nfsrv_dumpclients(dumpclients, dumplist.ndl_size);
3133 error = copyout(dumpclients,
3134 CAST_USER_ADDR_T(dumplist.ndl_list), len);
3135 free((caddr_t)dumpclients, M_TEMP);
3137 } else if (uap->flag & NFSSVC_DUMPLOCKS) {
3138 error = copyin(uap->argp, (caddr_t)&dumplocklist,
3139 sizeof (struct nfsd_dumplocklist));
3140 if (!error && (dumplocklist.ndllck_size < 1 ||
3141 dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST))
3144 error = nfsrv_lookupfilename(&nd,
3145 dumplocklist.ndllck_fname, p);
3147 len = sizeof (struct nfsd_dumplocks) *
3148 dumplocklist.ndllck_size;
3149 dumplocks = (struct nfsd_dumplocks *)malloc(len,
3151 nfsrv_dumplocks(nd.ni_vp, dumplocks,
3152 dumplocklist.ndllck_size, p);
3154 error = copyout(dumplocks,
3155 CAST_USER_ADDR_T(dumplocklist.ndllck_list), len);
3156 free((caddr_t)dumplocks, M_TEMP);
3158 } else if (uap->flag & NFSSVC_BACKUPSTABLE) {
3161 nfsd_master_pid = procp->p_pid;
3162 bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1);
3163 nfsd_master_start = procp->p_stats->p_start;
3164 nfsd_master_proc = procp;
3166 } else if ((uap->flag & NFSSVC_SUSPENDNFSD) != 0) {
3167 NFSLOCKV4ROOTMUTEX();
3168 if (suspend_nfsd == 0) {
3169 /* Lock out all nfsd threads */
3171 igotlock = nfsv4_lock(&nfsd_suspend_lock, 1,
3172 NULL, NFSV4ROOTLOCKMUTEXPTR, NULL);
3173 } while (igotlock == 0 && suspend_nfsd == 0);
3176 NFSUNLOCKV4ROOTMUTEX();
3178 } else if ((uap->flag & NFSSVC_RESUMENFSD) != 0) {
3179 NFSLOCKV4ROOTMUTEX();
3180 if (suspend_nfsd != 0) {
3181 nfsv4_unlock(&nfsd_suspend_lock, 0);
3184 NFSUNLOCKV4ROOTMUTEX();
3194 * Returns 0 if ok, 1 otherwise.
3197 nfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp)
3202 * This seems odd, but allow the case where the security flavor
3203 * list is empty. This happens when NFSv4 is traversing non-exported
3204 * file systems. Exported file systems should always have a non-empty
3205 * security flavor list.
3207 if (exp->nes_numsecflavor == 0)
3210 for (i = 0; i < exp->nes_numsecflavor; i++) {
3212 * The tests for privacy and integrity must be first,
3213 * since ND_GSS is set for everything but AUTH_SYS.
3215 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P &&
3216 (nd->nd_flag & ND_GSSPRIVACY))
3218 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I &&
3219 (nd->nd_flag & ND_GSSINTEGRITY))
3221 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 &&
3222 (nd->nd_flag & ND_GSS))
3224 if (exp->nes_secflavors[i] == AUTH_SYS &&
3225 (nd->nd_flag & ND_GSS) == 0)
3232 * Calculate a hash value for the fid in a file handle.
3235 nfsrv_hashfh(fhandle_t *fhp)
3239 hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0);
3244 * Signal the userland master nfsd to backup the stable restart file.
3247 nfsrv_backupstable(void)
3251 if (nfsd_master_proc != NULL) {
3252 procp = pfind(nfsd_master_pid);
3253 /* Try to make sure it is the correct process. */
3254 if (procp == nfsd_master_proc &&
3255 procp->p_stats->p_start.tv_sec ==
3256 nfsd_master_start.tv_sec &&
3257 procp->p_stats->p_start.tv_usec ==
3258 nfsd_master_start.tv_usec &&
3259 strcmp(procp->p_comm, nfsd_master_comm) == 0)
3260 kern_psignal(procp, SIGUSR2);
3262 nfsd_master_proc = NULL;
3269 extern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *);
3272 * Called once to initialize data structures...
3275 nfsd_modevent(module_t mod, int type, void *data)
3278 static int loaded = 0;
3285 mtx_init(&nfs_cache_mutex, "nfs_cache_mutex", NULL, MTX_DEF);
3286 mtx_init(&nfs_v4root_mutex, "nfs_v4root_mutex", NULL, MTX_DEF);
3287 mtx_init(&nfsv4root_mnt.mnt_mtx, "struct mount mtx", NULL,
3289 lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0);
3296 #ifdef VV_DISABLEDELEG
3297 vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation;
3298 vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation;
3300 nfsd_call_servertimer = nfsrv_servertimer;
3301 nfsd_call_nfsd = nfssvc_nfsd;
3306 if (newnfs_numnfsd != 0) {
3311 #ifdef VV_DISABLEDELEG
3312 vn_deleg_ops.vndeleg_recall = NULL;
3313 vn_deleg_ops.vndeleg_disable = NULL;
3315 nfsd_call_servertimer = NULL;
3316 nfsd_call_nfsd = NULL;
3318 /* Clean out all NFSv4 state. */
3319 nfsrv_throwawayallstate(curthread);
3321 /* Clean the NFS server reply cache */
3322 nfsrvd_cleancache();
3324 /* Free up the krpc server pool. */
3325 if (nfsrvd_pool != NULL)
3326 svcpool_destroy(nfsrvd_pool);
3328 /* and get rid of the locks */
3329 mtx_destroy(&nfs_cache_mutex);
3330 mtx_destroy(&nfs_v4root_mutex);
3331 mtx_destroy(&nfsv4root_mnt.mnt_mtx);
3332 lockdestroy(&nfsv4root_mnt.mnt_explock);
3344 static moduledata_t nfsd_mod = {
3349 DECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY);
3351 /* So that loader and kldload(2) can find us, wherever we are.. */
3352 MODULE_VERSION(nfsd, 1);
3353 MODULE_DEPEND(nfsd, nfscommon, 1, 1, 1);
3354 MODULE_DEPEND(nfsd, nfslock, 1, 1, 1);
3355 MODULE_DEPEND(nfsd, nfslockd, 1, 1, 1);
3356 MODULE_DEPEND(nfsd, krpc, 1, 1, 1);
3357 MODULE_DEPEND(nfsd, nfssvc, 1, 1, 1);