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 nfsrchash_bucket nfsrchash_table[NFSRVCACHE_HASHSIZE];
64 struct mtx nfsrc_udpmtx;
65 struct mtx nfs_v4root_mutex;
66 struct nfsrvfh nfs_rootfh, nfs_pubfh;
67 int nfs_pubfhset = 0, nfs_rootfhset = 0;
68 struct proc *nfsd_master_proc = NULL;
69 static pid_t nfsd_master_pid = (pid_t)-1;
70 static char nfsd_master_comm[MAXCOMLEN + 1];
71 static struct timeval nfsd_master_start;
72 static uint32_t nfsv4_sysid = 0;
74 static int nfssvc_srvcall(struct thread *, struct nfssvc_args *,
77 int nfsrv_enable_crossmntpt = 1;
78 static int nfs_commit_blks;
79 static int nfs_commit_miss;
80 extern int nfsrv_issuedelegs;
81 extern int nfsrv_dolocallocks;
83 SYSCTL_NODE(_vfs, OID_AUTO, nfsd, CTLFLAG_RW, 0, "New NFS server");
84 SYSCTL_INT(_vfs_nfsd, OID_AUTO, mirrormnt, CTLFLAG_RW,
85 &nfsrv_enable_crossmntpt, 0, "Enable nfsd to cross mount points");
86 SYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks,
88 SYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss,
90 SYSCTL_INT(_vfs_nfsd, OID_AUTO, issue_delegations, CTLFLAG_RW,
91 &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations");
92 SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_locallocks, CTLFLAG_RW,
93 &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files");
95 #define MAX_REORDERED_RPC 16
96 #define NUM_HEURISTIC 1031
99 #define NHUSE_MAX 2048
101 static struct nfsheur {
102 struct vnode *nh_vp; /* vp to match (unreferenced pointer) */
103 off_t nh_nextoff; /* next offset for sequential detection */
104 int nh_use; /* use count for selection */
105 int nh_seqcount; /* heuristic */
106 } nfsheur[NUM_HEURISTIC];
110 * Heuristic to detect sequential operation.
112 static struct nfsheur *
113 nfsrv_sequential_heuristic(struct uio *uio, struct vnode *vp)
118 /* Locate best candidate. */
120 hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC;
123 if (nfsheur[hi].nh_vp == vp) {
127 if (nfsheur[hi].nh_use > 0)
128 --nfsheur[hi].nh_use;
129 hi = (hi + 1) % NUM_HEURISTIC;
130 if (nfsheur[hi].nh_use < nh->nh_use)
134 /* Initialize hint if this is a new file. */
135 if (nh->nh_vp != vp) {
137 nh->nh_nextoff = uio->uio_offset;
138 nh->nh_use = NHUSE_INIT;
139 if (uio->uio_offset == 0)
145 /* Calculate heuristic. */
146 if ((uio->uio_offset == 0 && nh->nh_seqcount > 0) ||
147 uio->uio_offset == nh->nh_nextoff) {
148 /* See comments in vfs_vnops.c:sequential_heuristic(). */
149 nh->nh_seqcount += howmany(uio->uio_resid, 16384);
150 if (nh->nh_seqcount > IO_SEQMAX)
151 nh->nh_seqcount = IO_SEQMAX;
152 } else if (qabs(uio->uio_offset - nh->nh_nextoff) <= MAX_REORDERED_RPC *
153 imax(vp->v_mount->mnt_stat.f_iosize, uio->uio_resid)) {
154 /* Probably a reordered RPC, leave seqcount alone. */
155 } else if (nh->nh_seqcount > 1) {
156 nh->nh_seqcount /= 2;
160 nh->nh_use += NHUSE_INC;
161 if (nh->nh_use > NHUSE_MAX)
162 nh->nh_use = NHUSE_MAX;
167 * Get attributes into nfsvattr structure.
170 nfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred,
171 struct thread *p, int vpislocked)
173 int error, lockedit = 0;
175 if (vpislocked == 0) {
177 * When vpislocked == 0, the vnode is either exclusively
178 * locked by this thread or not locked by this thread.
179 * As such, shared lock it, if not exclusively locked.
181 if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) {
183 NFSVOPLOCK(vp, LK_SHARED | LK_RETRY);
186 error = VOP_GETATTR(vp, &nvap->na_vattr, cred);
195 * Get a file handle for a vnode.
198 nfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p)
202 NFSBZERO((caddr_t)fhp, sizeof(fhandle_t));
203 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
204 error = VOP_VPTOFH(vp, &fhp->fh_fid);
211 * Perform access checking for vnodes obtained from file handles that would
212 * refer to files already opened by a Unix client. You cannot just use
213 * vn_writechk() and VOP_ACCESSX() for two reasons.
214 * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write
216 * 2 - The owner is to be given access irrespective of mode bits for some
217 * operations, so that processes that chmod after opening a file don't
221 nfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred,
222 struct nfsexstuff *exp, struct thread *p, int override, int vpislocked,
223 u_int32_t *supportedtypep)
226 int error = 0, getret = 0;
228 if (vpislocked == 0) {
229 if (NFSVOPLOCK(vp, LK_SHARED) != 0) {
234 if (accmode & VWRITE) {
235 /* Just vn_writechk() changed to check rdonly */
237 * Disallow write attempts on read-only file systems;
238 * unless the file is a socket or a block or character
239 * device resident on the file system.
241 if (NFSVNO_EXRDONLY(exp) ||
242 (vp->v_mount->mnt_flag & MNT_RDONLY)) {
243 switch (vp->v_type) {
253 * If there's shared text associated with
254 * the inode, try to free it up once. If
255 * we fail, we can't allow writing.
257 if (VOP_IS_TEXT(vp) && error == 0)
267 * Should the override still be applied when ACLs are enabled?
269 error = VOP_ACCESSX(vp, accmode, cred, p);
270 if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) {
272 * Try again with VEXPLICIT_DENY, to see if the test for
273 * deletion is supported.
275 error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p);
277 if (vp->v_type == VDIR) {
278 accmode &= ~(VDELETE | VDELETE_CHILD);
280 error = VOP_ACCESSX(vp, accmode, cred, p);
281 } else if (supportedtypep != NULL) {
282 *supportedtypep &= ~NFSACCESS_DELETE;
288 * Allow certain operations for the owner (reads and writes
289 * on files that are already open).
291 if (override != NFSACCCHK_NOOVERRIDE &&
292 (error == EPERM || error == EACCES)) {
293 if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT))
295 else if (override & NFSACCCHK_ALLOWOWNER) {
296 getret = VOP_GETATTR(vp, &vattr, cred);
297 if (getret == 0 && cred->cr_uid == vattr.va_uid)
310 * Set attribute(s) vnop.
313 nfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred,
314 struct thread *p, struct nfsexstuff *exp)
318 error = VOP_SETATTR(vp, &nvap->na_vattr, cred);
324 * Set up nameidata for a lookup() call and do it.
327 nfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp,
328 struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p,
329 struct vnode **retdirp)
331 struct componentname *cnp = &ndp->ni_cnd;
335 int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen;
336 int error = 0, crossmnt;
340 cnp->cn_nameptr = cnp->cn_pnbuf;
341 ndp->ni_strictrelative = 0;
343 * Extract and set starting directory.
345 if (dp->v_type != VDIR) {
350 nfsvno_relpathbuf(ndp);
358 if (NFSVNO_EXRDONLY(exp))
359 cnp->cn_flags |= RDONLY;
360 ndp->ni_segflg = UIO_SYSSPACE;
363 if (nd->nd_flag & ND_PUBLOOKUP) {
365 if (cnp->cn_pnbuf[0] == '/') {
368 * Check for degenerate pathnames here, since lookup()
371 for (i = 1; i < ndp->ni_pathlen; i++)
372 if (cnp->cn_pnbuf[i] != '/')
374 if (i == ndp->ni_pathlen) {
375 error = NFSERR_ACCES;
381 } else if ((nfsrv_enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) ||
382 (nd->nd_flag & ND_NFSV4) == 0) {
384 * Only cross mount points for NFSv4 when doing a
385 * mount while traversing the file system above
386 * the mount point, unless nfsrv_enable_crossmntpt is set.
388 cnp->cn_flags |= NOCROSSMOUNT;
393 * Initialize for scan, set ni_startdir and bump ref on dp again
394 * becuase lookup() will dereference ni_startdir.
398 ndp->ni_startdir = dp;
399 ndp->ni_rootdir = rootvnode;
400 ndp->ni_topdir = NULL;
403 cnp->cn_flags |= LOCKLEAF;
405 cnp->cn_nameptr = cnp->cn_pnbuf;
407 * Call lookup() to do the real work. If an error occurs,
408 * ndp->ni_vp and ni_dvp are left uninitialized or NULL and
409 * we do not have to dereference anything before returning.
410 * In either case ni_startdir will be dereferenced and NULLed
418 * Check for encountering a symbolic link. Trivial
419 * termination occurs if no symlink encountered.
421 if ((cnp->cn_flags & ISSYMLINK) == 0) {
422 if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0)
423 nfsvno_relpathbuf(ndp);
424 if (ndp->ni_vp && !lockleaf)
425 NFSVOPUNLOCK(ndp->ni_vp, 0);
432 if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1)
433 NFSVOPUNLOCK(ndp->ni_dvp, 0);
434 if (!(nd->nd_flag & ND_PUBLOOKUP)) {
439 if (ndp->ni_loopcnt++ >= MAXSYMLINKS) {
443 if (ndp->ni_pathlen > 1)
444 cp = uma_zalloc(namei_zone, M_WAITOK);
448 aiov.iov_len = MAXPATHLEN;
449 auio.uio_iov = &aiov;
452 auio.uio_rw = UIO_READ;
453 auio.uio_segflg = UIO_SYSSPACE;
455 auio.uio_resid = MAXPATHLEN;
456 error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred);
459 if (ndp->ni_pathlen > 1)
460 uma_zfree(namei_zone, cp);
466 linklen = MAXPATHLEN - auio.uio_resid;
471 if (linklen + ndp->ni_pathlen >= MAXPATHLEN) {
472 error = ENAMETOOLONG;
477 * Adjust or replace path
479 if (ndp->ni_pathlen > 1) {
480 NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen);
481 uma_zfree(namei_zone, cnp->cn_pnbuf);
484 cnp->cn_pnbuf[linklen] = '\0';
485 ndp->ni_pathlen += linklen;
488 * Cleanup refs for next loop and check if root directory
489 * should replace current directory. Normally ni_dvp
490 * becomes the new base directory and is cleaned up when
491 * we loop. Explicitly null pointers after invalidation
492 * to clarify operation.
497 if (cnp->cn_pnbuf[0] == '/') {
499 ndp->ni_dvp = ndp->ni_rootdir;
502 ndp->ni_startdir = ndp->ni_dvp;
506 cnp->cn_flags &= ~LOCKLEAF;
510 uma_zfree(namei_zone, cnp->cn_pnbuf);
513 ndp->ni_startdir = NULL;
514 cnp->cn_flags &= ~HASBUF;
515 } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) {
520 NFSEXITCODE2(error, nd);
525 * Set up a pathname buffer and return a pointer to it and, optionally
526 * set a hash pointer.
529 nfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp)
531 struct componentname *cnp = &ndp->ni_cnd;
533 cnp->cn_flags |= (NOMACCHECK | HASBUF);
534 cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK);
537 *bufpp = cnp->cn_pnbuf;
541 * Release the above path buffer, if not released by nfsvno_namei().
544 nfsvno_relpathbuf(struct nameidata *ndp)
547 if ((ndp->ni_cnd.cn_flags & HASBUF) == 0)
549 uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf);
550 ndp->ni_cnd.cn_flags &= ~HASBUF;
554 * Readlink vnode op into an mbuf list.
557 nfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p,
558 struct mbuf **mpp, struct mbuf **mpendp, int *lenp)
560 struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN];
561 struct iovec *ivp = iv;
562 struct uio io, *uiop = &io;
563 struct mbuf *mp, *mp2 = NULL, *mp3 = NULL;
564 int i, len, tlen, error = 0;
568 while (len < NFS_MAXPATHLEN) {
571 mp->m_len = NFSMSIZ(mp);
578 if ((len + mp->m_len) > NFS_MAXPATHLEN) {
579 mp->m_len = NFS_MAXPATHLEN - len;
580 len = NFS_MAXPATHLEN;
584 ivp->iov_base = mtod(mp, caddr_t);
585 ivp->iov_len = mp->m_len;
590 uiop->uio_iovcnt = i;
591 uiop->uio_offset = 0;
592 uiop->uio_resid = len;
593 uiop->uio_rw = UIO_READ;
594 uiop->uio_segflg = UIO_SYSSPACE;
596 error = VOP_READLINK(vp, uiop, cred);
602 if (uiop->uio_resid > 0) {
603 len -= uiop->uio_resid;
604 tlen = NFSM_RNDUP(len);
605 nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len);
617 * Read vnode op call into mbuf list.
620 nfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred,
621 struct thread *p, struct mbuf **mpp, struct mbuf **mpendp)
627 int error = 0, len, left, siz, tlen, ioflag = 0;
628 struct mbuf *m2 = NULL, *m3;
629 struct uio io, *uiop = &io;
632 len = left = NFSM_RNDUP(cnt);
635 * Generate the mbuf list with the uio_iov ref. to it.
642 siz = min(M_TRAILINGSPACE(m), left);
651 MALLOC(iv, struct iovec *, i * sizeof (struct iovec),
653 uiop->uio_iov = iv2 = iv;
659 panic("nfsvno_read iov");
660 siz = min(M_TRAILINGSPACE(m), left);
662 iv->iov_base = mtod(m, caddr_t) + m->m_len;
671 uiop->uio_iovcnt = i;
672 uiop->uio_offset = off;
673 uiop->uio_resid = len;
674 uiop->uio_rw = UIO_READ;
675 uiop->uio_segflg = UIO_SYSSPACE;
676 nh = nfsrv_sequential_heuristic(uiop, vp);
677 ioflag |= nh->nh_seqcount << IO_SEQSHIFT;
678 error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred);
679 FREE((caddr_t)iv2, M_TEMP);
685 nh->nh_nextoff = uiop->uio_offset;
686 tlen = len - uiop->uio_resid;
687 cnt = cnt < tlen ? cnt : tlen;
688 tlen = NFSM_RNDUP(cnt);
692 } else if (len != tlen || tlen != cnt)
693 nfsrv_adj(m3, len - tlen, tlen - cnt);
703 * Write vnode op from an mbuf list.
706 nfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int stable,
707 struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p)
713 struct uio io, *uiop = &io;
716 MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP,
718 uiop->uio_iov = iv = ivp;
719 uiop->uio_iovcnt = cnt;
720 i = mtod(mp, caddr_t) + mp->m_len - cp;
724 panic("nfsvno_write");
735 cp = mtod(mp, caddr_t);
739 if (stable == NFSWRITE_UNSTABLE)
740 ioflags = IO_NODELOCKED;
742 ioflags = (IO_SYNC | IO_NODELOCKED);
743 uiop->uio_resid = retlen;
744 uiop->uio_rw = UIO_WRITE;
745 uiop->uio_segflg = UIO_SYSSPACE;
747 uiop->uio_offset = off;
748 nh = nfsrv_sequential_heuristic(uiop, vp);
749 ioflags |= nh->nh_seqcount << IO_SEQSHIFT;
750 error = VOP_WRITE(vp, uiop, ioflags, cred);
752 nh->nh_nextoff = uiop->uio_offset;
753 FREE((caddr_t)iv, M_TEMP);
760 * Common code for creating a regular file (plus special files for V2).
763 nfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp,
764 struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp,
765 int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp)
770 error = nd->nd_repstat;
771 if (!error && ndp->ni_vp == NULL) {
772 if (nvap->na_type == VREG || nvap->na_type == VSOCK) {
773 vrele(ndp->ni_startdir);
774 error = VOP_CREATE(ndp->ni_dvp,
775 &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr);
777 nfsvno_relpathbuf(ndp);
779 if (*exclusive_flagp) {
780 *exclusive_flagp = 0;
781 NFSVNO_ATTRINIT(nvap);
782 nvap->na_atime.tv_sec = cverf[0];
783 nvap->na_atime.tv_nsec = cverf[1];
784 error = VOP_SETATTR(ndp->ni_vp,
785 &nvap->na_vattr, nd->nd_cred);
789 * NFS V2 Only. nfsrvd_mknod() does this for V3.
790 * (This implies, just get out on an error.)
792 } else if (nvap->na_type == VCHR || nvap->na_type == VBLK ||
793 nvap->na_type == VFIFO) {
794 if (nvap->na_type == VCHR && rdev == 0xffffffff)
795 nvap->na_type = VFIFO;
796 if (nvap->na_type != VFIFO &&
797 (error = priv_check_cred(nd->nd_cred,
798 PRIV_VFS_MKNOD_DEV, 0))) {
799 vrele(ndp->ni_startdir);
800 nfsvno_relpathbuf(ndp);
804 nvap->na_rdev = rdev;
805 error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp,
806 &ndp->ni_cnd, &nvap->na_vattr);
808 nfsvno_relpathbuf(ndp);
809 vrele(ndp->ni_startdir);
813 vrele(ndp->ni_startdir);
814 nfsvno_relpathbuf(ndp);
822 * Handle cases where error is already set and/or
824 * 1 - clean up the lookup
825 * 2 - iff !error and na_size set, truncate it
827 vrele(ndp->ni_startdir);
828 nfsvno_relpathbuf(ndp);
830 if (ndp->ni_dvp == *vpp)
834 if (!error && nvap->na_size != VNOVAL) {
835 error = nfsvno_accchk(*vpp, VWRITE,
836 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE,
837 NFSACCCHK_VPISLOCKED, NULL);
839 tempsize = nvap->na_size;
840 NFSVNO_ATTRINIT(nvap);
841 nvap->na_size = tempsize;
842 error = VOP_SETATTR(*vpp,
843 &nvap->na_vattr, nd->nd_cred);
856 * Do a mknod vnode op.
859 nfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred,
865 vtyp = nvap->na_type;
867 * Iff doesn't exist, create it.
870 vrele(ndp->ni_startdir);
871 nfsvno_relpathbuf(ndp);
877 if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) {
878 vrele(ndp->ni_startdir);
879 nfsvno_relpathbuf(ndp);
881 error = NFSERR_BADTYPE;
885 vrele(ndp->ni_startdir);
886 error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp,
887 &ndp->ni_cnd, &nvap->na_vattr);
889 nfsvno_relpathbuf(ndp);
891 if (nvap->na_type != VFIFO &&
892 (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) {
893 vrele(ndp->ni_startdir);
894 nfsvno_relpathbuf(ndp);
898 error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp,
899 &ndp->ni_cnd, &nvap->na_vattr);
901 nfsvno_relpathbuf(ndp);
902 vrele(ndp->ni_startdir);
904 * Since VOP_MKNOD returns the ni_vp, I can't
905 * see any reason to do the lookup.
918 nfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid,
919 struct ucred *cred, struct thread *p, struct nfsexstuff *exp)
923 if (ndp->ni_vp != NULL) {
924 if (ndp->ni_dvp == ndp->ni_vp)
929 nfsvno_relpathbuf(ndp);
933 error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd,
936 nfsvno_relpathbuf(ndp);
947 nfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp,
948 int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p,
949 struct nfsexstuff *exp)
954 vrele(ndp->ni_startdir);
955 nfsvno_relpathbuf(ndp);
956 if (ndp->ni_dvp == ndp->ni_vp)
965 error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd,
966 &nvap->na_vattr, pathcp);
968 vrele(ndp->ni_startdir);
969 nfsvno_relpathbuf(ndp);
971 * Although FreeBSD still had the lookup code in
972 * it for 7/current, there doesn't seem to be any
973 * point, since VOP_SYMLINK() returns the ni_vp.
974 * Just vput it for v2.
976 if (!not_v2 && !error)
985 * Parse symbolic link arguments.
986 * This function has an ugly side effect. It will MALLOC() an area for
987 * the symlink and set iov_base to point to it, only if it succeeds.
988 * So, if it returns with uiop->uio_iov->iov_base != NULL, that must
992 nfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap,
993 struct thread *p, char **pathcpp, int *lenp)
998 struct nfsv2_sattr *sp;
1002 if ((nd->nd_flag & ND_NFSV3) &&
1003 (error = nfsrv_sattr(nd, nvap, NULL, NULL, p)))
1005 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1006 len = fxdr_unsigned(int, *tl);
1007 if (len > NFS_MAXPATHLEN || len <= 0) {
1011 MALLOC(pathcp, caddr_t, len + 1, M_TEMP, M_WAITOK);
1012 error = nfsrv_mtostr(nd, pathcp, len);
1015 if (nd->nd_flag & ND_NFSV2) {
1016 NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
1017 nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode);
1021 NFSEXITCODE2(0, nd);
1025 free(pathcp, M_TEMP);
1026 NFSEXITCODE2(error, nd);
1031 * Remove a non-directory object.
1034 nfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred,
1035 struct thread *p, struct nfsexstuff *exp)
1041 if (vp->v_type == VDIR)
1042 error = NFSERR_ISDIR;
1044 error = nfsrv_checkremove(vp, 1, p);
1046 error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd);
1047 if (ndp->ni_dvp == vp)
1052 if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0)
1053 nfsvno_relpathbuf(ndp);
1059 * Remove a directory.
1062 nfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred,
1063 struct thread *p, struct nfsexstuff *exp)
1069 if (vp->v_type != VDIR) {
1074 * No rmdir "." please.
1076 if (ndp->ni_dvp == vp) {
1081 * The root of a mounted filesystem cannot be deleted.
1083 if (vp->v_vflag & VV_ROOT)
1087 error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd);
1088 if (ndp->ni_dvp == vp)
1093 if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0)
1094 nfsvno_relpathbuf(ndp);
1103 nfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp,
1104 u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p)
1106 struct vnode *fvp, *tvp, *tdvp;
1109 fvp = fromndp->ni_vp;
1111 vrele(fromndp->ni_dvp);
1116 tdvp = tondp->ni_dvp;
1119 if (fvp->v_type == VDIR && tvp->v_type != VDIR) {
1120 error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST;
1122 } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) {
1123 error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST;
1126 if (tvp->v_type == VDIR && tvp->v_mountedhere) {
1127 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV;
1132 * A rename to '.' or '..' results in a prematurely
1133 * unlocked vnode on FreeBSD5, so I'm just going to fail that
1136 if ((tondp->ni_cnd.cn_namelen == 1 &&
1137 tondp->ni_cnd.cn_nameptr[0] == '.') ||
1138 (tondp->ni_cnd.cn_namelen == 2 &&
1139 tondp->ni_cnd.cn_nameptr[0] == '.' &&
1140 tondp->ni_cnd.cn_nameptr[1] == '.')) {
1145 if (fvp->v_type == VDIR && fvp->v_mountedhere) {
1146 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV;
1149 if (fvp->v_mount != tdvp->v_mount) {
1150 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV;
1154 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL;
1159 * If source and destination are the same, there is nothing to
1160 * do. Set error to -1 to indicate this.
1165 if (ndflag & ND_NFSV4) {
1166 if (NFSVOPLOCK(fvp, LK_EXCLUSIVE) == 0) {
1167 error = nfsrv_checkremove(fvp, 0, p);
1168 NFSVOPUNLOCK(fvp, 0);
1172 error = nfsrv_checkremove(tvp, 1, p);
1175 * For NFSv2 and NFSv3, try to get rid of the delegation, so
1176 * that the NFSv4 client won't be confused by the rename.
1177 * Since nfsd_recalldelegation() can only be called on an
1178 * unlocked vnode at this point and fvp is the file that will
1179 * still exist after the rename, just do fvp.
1181 nfsd_recalldelegation(fvp, p);
1185 error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp,
1186 &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp,
1195 vrele(fromndp->ni_dvp);
1200 vrele(tondp->ni_startdir);
1201 nfsvno_relpathbuf(tondp);
1203 vrele(fromndp->ni_startdir);
1204 nfsvno_relpathbuf(fromndp);
1213 nfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred,
1214 struct thread *p, struct nfsexstuff *exp)
1224 if (vp->v_mount != xp->v_mount)
1228 NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY);
1229 if ((vp->v_iflag & VI_DOOMED) == 0)
1230 error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd);
1233 if (ndp->ni_dvp == vp)
1237 NFSVOPUNLOCK(vp, 0);
1239 if (ndp->ni_dvp == ndp->ni_vp)
1246 nfsvno_relpathbuf(ndp);
1252 * Do the fsync() appropriate for the commit.
1255 nfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred,
1261 * RFC 1813 3.3.21: if count is 0, a flush from offset to the end of
1262 * file is done. At this time VOP_FSYNC does not accept offset and
1263 * byte count parameters so call VOP_FSYNC the whole file for now.
1264 * The same is true for NFSv4: RFC 3530 Sec. 14.2.3.
1266 if (cnt == 0 || cnt > MAX_COMMIT_COUNT) {
1268 * Give up and do the whole thing
1271 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
1272 VM_OBJECT_LOCK(vp->v_object);
1273 vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC);
1274 VM_OBJECT_UNLOCK(vp->v_object);
1276 error = VOP_FSYNC(vp, MNT_WAIT, td);
1279 * Locate and synchronously write any buffers that fall
1280 * into the requested range. Note: we are assuming that
1281 * f_iosize is a power of 2.
1283 int iosize = vp->v_mount->mnt_stat.f_iosize;
1284 int iomask = iosize - 1;
1289 * Align to iosize boundry, super-align to page boundry.
1292 cnt += off & iomask;
1293 off &= ~(u_quad_t)iomask;
1295 if (off & PAGE_MASK) {
1296 cnt += off & PAGE_MASK;
1297 off &= ~(u_quad_t)PAGE_MASK;
1299 lblkno = off / iosize;
1302 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
1303 VM_OBJECT_LOCK(vp->v_object);
1304 vm_object_page_clean(vp->v_object, off, off + cnt,
1306 VM_OBJECT_UNLOCK(vp->v_object);
1315 * If we have a buffer and it is marked B_DELWRI we
1316 * have to lock and write it. Otherwise the prior
1317 * write is assumed to have already been committed.
1319 * gbincore() can return invalid buffers now so we
1320 * have to check that bit as well (though B_DELWRI
1321 * should not be set if B_INVAL is set there could be
1322 * a race here since we haven't locked the buffer).
1324 if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) {
1325 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL |
1326 LK_INTERLOCK, BO_MTX(bo)) == ENOLCK) {
1328 continue; /* retry */
1330 if ((bp->b_flags & (B_DELWRI|B_INVAL)) ==
1333 bp->b_flags &= ~B_ASYNC;
1356 nfsvno_statfs(struct vnode *vp, struct statfs *sf)
1360 error = VFS_STATFS(vp->v_mount, sf);
1363 * Since NFS handles these values as unsigned on the
1364 * wire, there is no way to represent negative values,
1365 * so set them to 0. Without this, they will appear
1366 * to be very large positive values for clients like
1369 if (sf->f_bavail < 0)
1371 if (sf->f_ffree < 0)
1379 * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but
1380 * must handle nfsrv_opencheck() calls after any other access checks.
1383 nfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp,
1384 nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp,
1385 int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create,
1386 NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p,
1387 struct nfsexstuff *exp, struct vnode **vpp)
1389 struct vnode *vp = NULL;
1391 struct nfsexstuff nes;
1393 if (ndp->ni_vp == NULL)
1394 nd->nd_repstat = nfsrv_opencheck(clientid,
1395 stateidp, stp, NULL, nd, p, nd->nd_repstat);
1396 if (!nd->nd_repstat) {
1397 if (ndp->ni_vp == NULL) {
1398 vrele(ndp->ni_startdir);
1399 nd->nd_repstat = VOP_CREATE(ndp->ni_dvp,
1400 &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr);
1402 nfsvno_relpathbuf(ndp);
1403 if (!nd->nd_repstat) {
1404 if (*exclusive_flagp) {
1405 *exclusive_flagp = 0;
1406 NFSVNO_ATTRINIT(nvap);
1407 nvap->na_atime.tv_sec = cverf[0];
1408 nvap->na_atime.tv_nsec = cverf[1];
1409 nd->nd_repstat = VOP_SETATTR(ndp->ni_vp,
1410 &nvap->na_vattr, cred);
1412 nfsrv_fixattr(nd, ndp->ni_vp, nvap,
1413 aclp, p, attrbitp, exp);
1418 if (ndp->ni_startdir)
1419 vrele(ndp->ni_startdir);
1420 nfsvno_relpathbuf(ndp);
1422 if (create == NFSV4OPEN_CREATE) {
1423 if (ndp->ni_dvp == vp)
1428 if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) {
1429 if (ndp->ni_cnd.cn_flags & RDONLY)
1430 NFSVNO_SETEXRDONLY(&nes);
1432 NFSVNO_EXINIT(&nes);
1433 nd->nd_repstat = nfsvno_accchk(vp,
1434 VWRITE, cred, &nes, p,
1435 NFSACCCHK_NOOVERRIDE,
1436 NFSACCCHK_VPISLOCKED, NULL);
1437 nd->nd_repstat = nfsrv_opencheck(clientid,
1438 stateidp, stp, vp, nd, p, nd->nd_repstat);
1439 if (!nd->nd_repstat) {
1440 tempsize = nvap->na_size;
1441 NFSVNO_ATTRINIT(nvap);
1442 nvap->na_size = tempsize;
1443 nd->nd_repstat = VOP_SETATTR(vp,
1444 &nvap->na_vattr, cred);
1446 } else if (vp->v_type == VREG) {
1447 nd->nd_repstat = nfsrv_opencheck(clientid,
1448 stateidp, stp, vp, nd, p, nd->nd_repstat);
1452 if (ndp->ni_cnd.cn_flags & HASBUF)
1453 nfsvno_relpathbuf(ndp);
1454 if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) {
1455 vrele(ndp->ni_startdir);
1456 if (ndp->ni_dvp == ndp->ni_vp)
1466 NFSEXITCODE2(0, nd);
1470 * Updates the file rev and sets the mtime and ctime
1471 * to the current clock time, returning the va_filerev and va_Xtime
1475 nfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap,
1476 struct ucred *cred, struct thread *p)
1481 vfs_timestamp(&va.va_mtime);
1482 (void) VOP_SETATTR(vp, &va, cred);
1483 (void) nfsvno_getattr(vp, nvap, cred, p, 1);
1487 * Glue routine to nfsv4_fillattr().
1490 nfsvno_fillattr(struct nfsrv_descript *nd, struct mount *mp, struct vnode *vp,
1491 struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp,
1492 struct ucred *cred, struct thread *p, int isdgram, int reterr,
1493 int supports_nfsv4acls, int at_root, uint64_t mounted_on_fileno)
1497 error = nfsv4_fillattr(nd, mp, vp, NULL, &nvap->na_vattr, fhp, rderror,
1498 attrbitp, cred, p, isdgram, reterr, supports_nfsv4acls, at_root,
1500 NFSEXITCODE2(0, nd);
1504 /* Since the Readdir vnode ops vary, put the entire functions in here. */
1506 * nfs readdir service
1507 * - mallocs what it thinks is enough to read
1508 * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR
1509 * - calls VOP_READDIR()
1510 * - loops around building the reply
1511 * if the output generated exceeds count break out of loop
1512 * The NFSM_CLGET macro is used here so that the reply will be packed
1513 * tightly in mbuf clusters.
1514 * - it trims out records with d_fileno == 0
1515 * this doesn't matter for Unix clients, but they might confuse clients
1517 * - it trims out records with d_type == DT_WHT
1518 * these cannot be seen through NFS (unless we extend the protocol)
1519 * The alternate call nfsrvd_readdirplus() does lookups as well.
1520 * PS: The NFS protocol spec. does not clarify what the "count" byte
1521 * argument is a count of.. just name strings and file id's or the
1522 * entire reply rpc or ...
1523 * I tried just file name and id sizes and it confused the Sun client,
1524 * so I am using the full rpc size now. The "paranoia.." comment refers
1525 * to including the status longwords that are not a part of the dir.
1526 * "entry" structures, but are in the rpc.
1529 nfsrvd_readdir(struct nfsrv_descript *nd, int isdgram,
1530 struct vnode *vp, struct thread *p, struct nfsexstuff *exp)
1535 char *cpos, *cend, *rbuf;
1537 int nlen, error = 0, getret = 1;
1538 int siz, cnt, fullsiz, eofflag, ncookies;
1539 u_int64_t off, toff, verf;
1540 u_long *cookies = NULL, *cookiep;
1545 if (nd->nd_repstat) {
1546 nfsrv_postopattr(nd, getret, &at);
1549 if (nd->nd_flag & ND_NFSV2) {
1550 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1551 off = fxdr_unsigned(u_quad_t, *tl++);
1553 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1554 off = fxdr_hyper(tl);
1556 verf = fxdr_hyper(tl);
1560 cnt = fxdr_unsigned(int, *tl);
1561 if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0)
1562 cnt = NFS_SRVMAXDATA(nd);
1563 siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
1565 if (nd->nd_flag & ND_NFSV3) {
1566 nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred,
1570 * va_filerev is not sufficient as a cookie verifier,
1571 * since it is not supposed to change when entries are
1572 * removed/added unless that offset cookies returned to
1573 * the client are no longer valid.
1575 if (!nd->nd_repstat && toff && verf != at.na_filerev)
1576 nd->nd_repstat = NFSERR_BAD_COOKIE;
1579 if (!nd->nd_repstat && vp->v_type != VDIR)
1580 nd->nd_repstat = NFSERR_NOTDIR;
1581 if (nd->nd_repstat == 0 && cnt == 0) {
1582 if (nd->nd_flag & ND_NFSV2)
1583 /* NFSv2 does not have NFSERR_TOOSMALL */
1584 nd->nd_repstat = EPERM;
1586 nd->nd_repstat = NFSERR_TOOSMALL;
1588 if (!nd->nd_repstat)
1589 nd->nd_repstat = nfsvno_accchk(vp, VEXEC,
1590 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE,
1591 NFSACCCHK_VPISLOCKED, NULL);
1592 if (nd->nd_repstat) {
1594 if (nd->nd_flag & ND_NFSV3)
1595 nfsrv_postopattr(nd, getret, &at);
1598 not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs");
1599 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
1603 free((caddr_t)cookies, M_TEMP);
1611 io.uio_offset = (off_t)off;
1613 io.uio_segflg = UIO_SYSSPACE;
1614 io.uio_rw = UIO_READ;
1616 nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies,
1618 off = (u_int64_t)io.uio_offset;
1620 siz -= io.uio_resid;
1622 if (!cookies && !nd->nd_repstat)
1623 nd->nd_repstat = NFSERR_PERM;
1624 if (nd->nd_flag & ND_NFSV3) {
1625 getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1);
1626 if (!nd->nd_repstat)
1627 nd->nd_repstat = getret;
1631 * Handles the failed cases. nd->nd_repstat == 0 past here.
1633 if (nd->nd_repstat) {
1635 free((caddr_t)rbuf, M_TEMP);
1637 free((caddr_t)cookies, M_TEMP);
1638 if (nd->nd_flag & ND_NFSV3)
1639 nfsrv_postopattr(nd, getret, &at);
1643 * If nothing read, return eof
1648 if (nd->nd_flag & ND_NFSV2) {
1649 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1651 nfsrv_postopattr(nd, getret, &at);
1652 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1653 txdr_hyper(at.na_filerev, tl);
1656 *tl++ = newnfs_false;
1658 FREE((caddr_t)rbuf, M_TEMP);
1659 FREE((caddr_t)cookies, M_TEMP);
1664 * Check for degenerate cases of nothing useful read.
1665 * If so go try again
1669 dp = (struct dirent *)cpos;
1673 * For some reason FreeBSD's ufs_readdir() chooses to back the
1674 * directory offset up to a block boundary, so it is necessary to
1675 * skip over the records that precede the requested offset. This
1676 * requires the assumption that file offset cookies monotonically
1678 * Since the offset cookies don't monotonically increase for ZFS,
1679 * this is not done when ZFS is the file system.
1681 while (cpos < cend && ncookies > 0 &&
1682 (dp->d_fileno == 0 || dp->d_type == DT_WHT ||
1683 (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff))) {
1684 cpos += dp->d_reclen;
1685 dp = (struct dirent *)cpos;
1689 if (cpos >= cend || ncookies == 0) {
1697 * dirlen is the size of the reply, including all XDR and must
1698 * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate
1699 * if the XDR should be included in "count", but to be safe, we do.
1700 * (Include the two booleans at the end of the reply in dirlen now.)
1702 if (nd->nd_flag & ND_NFSV3) {
1703 nfsrv_postopattr(nd, getret, &at);
1704 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1705 txdr_hyper(at.na_filerev, tl);
1706 dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED;
1708 dirlen = 2 * NFSX_UNSIGNED;
1711 /* Loop through the records and build reply */
1712 while (cpos < cend && ncookies > 0) {
1713 nlen = dp->d_namlen;
1714 if (dp->d_fileno != 0 && dp->d_type != DT_WHT &&
1715 nlen <= NFS_MAXNAMLEN) {
1716 if (nd->nd_flag & ND_NFSV3)
1717 dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen));
1719 dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen));
1726 * Build the directory record xdr from
1729 if (nd->nd_flag & ND_NFSV3) {
1730 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
1731 *tl++ = newnfs_true;
1734 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1735 *tl++ = newnfs_true;
1737 *tl = txdr_unsigned(dp->d_fileno);
1738 (void) nfsm_strtom(nd, dp->d_name, nlen);
1739 if (nd->nd_flag & ND_NFSV3) {
1740 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1743 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1744 *tl = txdr_unsigned(*cookiep);
1746 cpos += dp->d_reclen;
1747 dp = (struct dirent *)cpos;
1753 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1754 *tl++ = newnfs_false;
1759 FREE((caddr_t)rbuf, M_TEMP);
1760 FREE((caddr_t)cookies, M_TEMP);
1763 NFSEXITCODE2(0, nd);
1767 NFSEXITCODE2(error, nd);
1772 * Readdirplus for V3 and Readdir for V4.
1775 nfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram,
1776 struct vnode *vp, struct thread *p, struct nfsexstuff *exp)
1781 char *cpos, *cend, *rbuf;
1784 struct nfsvattr nva, at, *nvap = &nva;
1785 struct mbuf *mb0, *mb1;
1786 struct nfsreferral *refp;
1787 int nlen, r, error = 0, getret = 1, usevget = 1;
1788 int siz, cnt, fullsiz, eofflag, ncookies, entrycnt;
1789 caddr_t bpos0, bpos1;
1790 u_int64_t off, toff, verf;
1791 u_long *cookies = NULL, *cookiep;
1792 nfsattrbit_t attrbits, rderrbits, savbits;
1795 struct componentname cn;
1796 int at_root, needs_unbusy, not_zfs, supports_nfsv4acls;
1797 struct mount *mp, *new_mp;
1798 uint64_t mounted_on_fileno;
1800 if (nd->nd_repstat) {
1801 nfsrv_postopattr(nd, getret, &at);
1804 NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
1805 off = fxdr_hyper(tl);
1808 verf = fxdr_hyper(tl);
1810 siz = fxdr_unsigned(int, *tl++);
1811 cnt = fxdr_unsigned(int, *tl);
1814 * Use the server's maximum data transfer size as the upper bound
1817 if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0)
1818 cnt = NFS_SRVMAXDATA(nd);
1821 * siz is a "hint" of how much directory information (name, fileid,
1822 * cookie) should be in the reply. At least one client "hints" 0,
1823 * so I set it to cnt for that case. I also round it up to the
1824 * next multiple of DIRBLKSIZ.
1828 siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
1830 if (nd->nd_flag & ND_NFSV4) {
1831 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1834 NFSSET_ATTRBIT(&savbits, &attrbits);
1835 NFSCLRNOTFILLABLE_ATTRBIT(&attrbits);
1836 NFSZERO_ATTRBIT(&rderrbits);
1837 NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR);
1839 NFSZERO_ATTRBIT(&attrbits);
1842 nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1);
1843 if (!nd->nd_repstat) {
1844 if (off && verf != at.na_filerev) {
1846 * va_filerev is not sufficient as a cookie verifier,
1847 * since it is not supposed to change when entries are
1848 * removed/added unless that offset cookies returned to
1849 * the client are no longer valid.
1852 if (nd->nd_flag & ND_NFSV4) {
1853 nd->nd_repstat = NFSERR_NOTSAME;
1855 nd->nd_repstat = NFSERR_BAD_COOKIE;
1858 } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) {
1859 nd->nd_repstat = NFSERR_BAD_COOKIE;
1862 if (!nd->nd_repstat && vp->v_type != VDIR)
1863 nd->nd_repstat = NFSERR_NOTDIR;
1864 if (!nd->nd_repstat && cnt == 0)
1865 nd->nd_repstat = NFSERR_TOOSMALL;
1866 if (!nd->nd_repstat)
1867 nd->nd_repstat = nfsvno_accchk(vp, VEXEC,
1868 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE,
1869 NFSACCCHK_VPISLOCKED, NULL);
1870 if (nd->nd_repstat) {
1872 if (nd->nd_flag & ND_NFSV3)
1873 nfsrv_postopattr(nd, getret, &at);
1876 not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs");
1878 MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
1882 free((caddr_t)cookies, M_TEMP);
1890 io.uio_offset = (off_t)off;
1892 io.uio_segflg = UIO_SYSSPACE;
1893 io.uio_rw = UIO_READ;
1895 nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies,
1897 off = (u_int64_t)io.uio_offset;
1899 siz -= io.uio_resid;
1901 getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1);
1903 if (!cookies && !nd->nd_repstat)
1904 nd->nd_repstat = NFSERR_PERM;
1905 if (!nd->nd_repstat)
1906 nd->nd_repstat = getret;
1907 if (nd->nd_repstat) {
1910 free((caddr_t)cookies, M_TEMP);
1911 free((caddr_t)rbuf, M_TEMP);
1912 if (nd->nd_flag & ND_NFSV3)
1913 nfsrv_postopattr(nd, getret, &at);
1917 * If nothing read, return eof
1922 if (nd->nd_flag & ND_NFSV3)
1923 nfsrv_postopattr(nd, getret, &at);
1924 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1925 txdr_hyper(at.na_filerev, tl);
1927 *tl++ = newnfs_false;
1929 free((caddr_t)cookies, M_TEMP);
1930 free((caddr_t)rbuf, M_TEMP);
1935 * Check for degenerate cases of nothing useful read.
1936 * If so go try again
1940 dp = (struct dirent *)cpos;
1944 * For some reason FreeBSD's ufs_readdir() chooses to back the
1945 * directory offset up to a block boundary, so it is necessary to
1946 * skip over the records that precede the requested offset. This
1947 * requires the assumption that file offset cookies monotonically
1949 * Since the offset cookies don't monotonically increase for ZFS,
1950 * this is not done when ZFS is the file system.
1952 while (cpos < cend && ncookies > 0 &&
1953 (dp->d_fileno == 0 || dp->d_type == DT_WHT ||
1954 (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff) ||
1955 ((nd->nd_flag & ND_NFSV4) &&
1956 ((dp->d_namlen == 1 && dp->d_name[0] == '.') ||
1957 (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) {
1958 cpos += dp->d_reclen;
1959 dp = (struct dirent *)cpos;
1963 if (cpos >= cend || ncookies == 0) {
1970 * Busy the file system so that the mount point won't go away
1971 * and, as such, VFS_VGET() can be used safely.
1975 NFSVOPUNLOCK(vp, 0);
1976 nd->nd_repstat = vfs_busy(mp, 0);
1978 if (nd->nd_repstat != 0) {
1980 free(cookies, M_TEMP);
1982 if (nd->nd_flag & ND_NFSV3)
1983 nfsrv_postopattr(nd, getret, &at);
1988 * Check to see if entries in this directory can be safely acquired
1989 * via VFS_VGET() or if a switch to VOP_LOOKUP() is required.
1990 * ZFS snapshot directories need VOP_LOOKUP(), so that any
1991 * automount of the snapshot directory that is required will
1993 * This needs to be done here for NFSv4, since NFSv4 never does
1994 * a VFS_VGET() for "." or "..".
1997 r = VFS_VGET(mp, at.na_fileid, LK_SHARED, &nvp);
1998 if (r == EOPNOTSUPP) {
2000 cn.cn_nameiop = LOOKUP;
2001 cn.cn_lkflags = LK_SHARED | LK_RETRY;
2002 cn.cn_cred = nd->nd_cred;
2009 * Save this position, in case there is an error before one entry
2013 bpos0 = nd->nd_bpos;
2016 * Fill in the first part of the reply.
2017 * dirlen is the reply length in bytes and cannot exceed cnt.
2018 * (Include the two booleans at the end of the reply in dirlen now,
2019 * so we recognize when we have exceeded cnt.)
2021 if (nd->nd_flag & ND_NFSV3) {
2022 dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED;
2023 nfsrv_postopattr(nd, getret, &at);
2025 dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED;
2027 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
2028 txdr_hyper(at.na_filerev, tl);
2031 * Save this position, in case there is an empty reply needed.
2034 bpos1 = nd->nd_bpos;
2036 /* Loop through the records and build reply */
2038 while (cpos < cend && ncookies > 0 && dirlen < cnt) {
2039 nlen = dp->d_namlen;
2040 if (dp->d_fileno != 0 && dp->d_type != DT_WHT &&
2041 nlen <= NFS_MAXNAMLEN &&
2042 ((nd->nd_flag & ND_NFSV3) || nlen > 2 ||
2043 (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.'))
2044 || (nlen == 1 && dp->d_name[0] != '.'))) {
2046 * Save the current position in the reply, in case
2047 * this entry exceeds cnt.
2050 bpos1 = nd->nd_bpos;
2053 * For readdir_and_lookup get the vnode using
2062 mounted_on_fileno = (uint64_t)dp->d_fileno;
2063 if ((nd->nd_flag & ND_NFSV3) ||
2064 NFSNONZERO_ATTRBIT(&savbits)) {
2065 if (nd->nd_flag & ND_NFSV4)
2066 refp = nfsv4root_getreferral(NULL,
2070 r = VFS_VGET(mp, dp->d_fileno,
2074 if (r == EOPNOTSUPP) {
2077 cn.cn_nameiop = LOOKUP;
2085 cn.cn_nameptr = dp->d_name;
2086 cn.cn_namelen = nlen;
2087 cn.cn_flags = ISLASTCN |
2088 NOFOLLOW | LOCKLEAF |
2091 dp->d_name[0] == '.' &&
2092 dp->d_name[1] == '.')
2095 if (NFSVOPLOCK(vp, LK_SHARED)
2097 nd->nd_repstat = EPERM;
2100 if ((vp->v_vflag & VV_ROOT) != 0
2101 && (cn.cn_flags & ISDOTDOT)
2107 r = VOP_LOOKUP(vp, &nvp,
2116 * For NFSv4, check to see if nvp is
2117 * a mount point and get the mount
2118 * point vnode, as required.
2121 nfsrv_enable_crossmntpt != 0 &&
2122 (nd->nd_flag & ND_NFSV4) != 0 &&
2123 nvp->v_type == VDIR &&
2124 nvp->v_mountedhere != NULL) {
2125 new_mp = nvp->v_mountedhere;
2126 r = vfs_busy(new_mp, 0);
2130 r = VFS_ROOT(new_mp,
2140 ((nd->nd_flag & ND_NFSV3) ||
2141 NFSNONZERO_ATTRBIT(&attrbits))) {
2142 r = nfsvno_getfh(nvp, &nfh, p);
2144 r = nfsvno_getattr(nvp, nvap,
2146 if (r == 0 && not_zfs == 0 &&
2147 nfsrv_enable_crossmntpt != 0 &&
2148 (nd->nd_flag & ND_NFSV4) != 0 &&
2149 nvp->v_type == VDIR &&
2150 vp->v_mount != nvp->v_mount) {
2152 * For a ZFS snapshot, there is a
2153 * pseudo mount that does not set
2154 * v_mountedhere, so it needs to
2155 * be detected via a different
2160 new_mp = nvp->v_mount;
2167 if (!NFSISSET_ATTRBIT(&attrbits,
2168 NFSATTRBIT_RDATTRERROR)) {
2171 if (needs_unbusy != 0)
2180 * Build the directory record xdr
2182 if (nd->nd_flag & ND_NFSV3) {
2183 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
2184 *tl++ = newnfs_true;
2186 *tl = txdr_unsigned(dp->d_fileno);
2187 dirlen += nfsm_strtom(nd, dp->d_name, nlen);
2188 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2190 *tl = txdr_unsigned(*cookiep);
2191 nfsrv_postopattr(nd, 0, nvap);
2192 dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1);
2193 dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR);
2197 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
2198 *tl++ = newnfs_true;
2200 *tl = txdr_unsigned(*cookiep);
2201 dirlen += nfsm_strtom(nd, dp->d_name, nlen);
2203 supports_nfsv4acls =
2204 nfs_supportsnfsv4acls(nvp);
2205 NFSVOPUNLOCK(nvp, 0);
2207 supports_nfsv4acls = 0;
2209 dirlen += nfsrv_putreferralattr(nd,
2212 if (nd->nd_repstat) {
2215 if (needs_unbusy != 0)
2220 dirlen += nfsvno_fillattr(nd, new_mp,
2221 nvp, nvap, &nfh, r, &rderrbits,
2222 nd->nd_cred, p, isdgram, 0,
2223 supports_nfsv4acls, at_root,
2226 dirlen += nfsvno_fillattr(nd, new_mp,
2227 nvp, nvap, &nfh, r, &attrbits,
2228 nd->nd_cred, p, isdgram, 0,
2229 supports_nfsv4acls, at_root,
2234 dirlen += (3 * NFSX_UNSIGNED);
2236 if (needs_unbusy != 0)
2241 cpos += dp->d_reclen;
2242 dp = (struct dirent *)cpos;
2250 * If dirlen > cnt, we must strip off the last entry. If that
2251 * results in an empty reply, report NFSERR_TOOSMALL.
2253 if (dirlen > cnt || nd->nd_repstat) {
2254 if (!nd->nd_repstat && entrycnt == 0)
2255 nd->nd_repstat = NFSERR_TOOSMALL;
2257 newnfs_trimtrailing(nd, mb0, bpos0);
2259 newnfs_trimtrailing(nd, mb1, bpos1);
2261 } else if (cpos < cend)
2263 if (!nd->nd_repstat) {
2264 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2265 *tl++ = newnfs_false;
2271 FREE((caddr_t)cookies, M_TEMP);
2272 FREE((caddr_t)rbuf, M_TEMP);
2275 NFSEXITCODE2(0, nd);
2279 NFSEXITCODE2(error, nd);
2284 * Get the settable attributes out of the mbuf list.
2285 * (Return 0 or EBADRPC)
2288 nfsrv_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap,
2289 nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p)
2292 struct nfsv2_sattr *sp;
2293 int error = 0, toclient = 0;
2295 switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) {
2297 NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
2299 * Some old clients didn't fill in the high order 16bits.
2300 * --> check the low order 2 bytes for 0xffff
2302 if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff)
2303 nvap->na_mode = nfstov_mode(sp->sa_mode);
2304 if (sp->sa_uid != newnfs_xdrneg1)
2305 nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid);
2306 if (sp->sa_gid != newnfs_xdrneg1)
2307 nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid);
2308 if (sp->sa_size != newnfs_xdrneg1)
2309 nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size);
2310 if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) {
2312 fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime);
2314 nvap->na_atime.tv_sec =
2315 fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec);
2316 nvap->na_atime.tv_nsec = 0;
2319 if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1)
2320 fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime);
2323 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2324 if (*tl == newnfs_true) {
2325 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2326 nvap->na_mode = nfstov_mode(*tl);
2328 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2329 if (*tl == newnfs_true) {
2330 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2331 nvap->na_uid = fxdr_unsigned(uid_t, *tl);
2333 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2334 if (*tl == newnfs_true) {
2335 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2336 nvap->na_gid = fxdr_unsigned(gid_t, *tl);
2338 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2339 if (*tl == newnfs_true) {
2340 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2341 nvap->na_size = fxdr_hyper(tl);
2343 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2344 switch (fxdr_unsigned(int, *tl)) {
2345 case NFSV3SATTRTIME_TOCLIENT:
2346 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2347 fxdr_nfsv3time(tl, &nvap->na_atime);
2350 case NFSV3SATTRTIME_TOSERVER:
2351 vfs_timestamp(&nvap->na_atime);
2352 nvap->na_vaflags |= VA_UTIMES_NULL;
2355 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2356 switch (fxdr_unsigned(int, *tl)) {
2357 case NFSV3SATTRTIME_TOCLIENT:
2358 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2359 fxdr_nfsv3time(tl, &nvap->na_mtime);
2360 nvap->na_vaflags &= ~VA_UTIMES_NULL;
2362 case NFSV3SATTRTIME_TOSERVER:
2363 vfs_timestamp(&nvap->na_mtime);
2365 nvap->na_vaflags |= VA_UTIMES_NULL;
2370 error = nfsv4_sattr(nd, nvap, attrbitp, aclp, p);
2373 NFSEXITCODE2(error, nd);
2378 * Handle the setable attributes for V4.
2379 * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise.
2382 nfsv4_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap,
2383 nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p)
2388 int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0;
2390 u_char *cp, namestr[NFSV4_SMALLSTR + 1];
2394 error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup);
2397 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2398 attrsize = fxdr_unsigned(int, *tl);
2401 * Loop around getting the setable attributes. If an unsupported
2402 * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return.
2405 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2406 bitpos = NFSATTRBIT_MAX;
2410 for (; bitpos < NFSATTRBIT_MAX; bitpos++) {
2411 if (attrsum > attrsize) {
2412 error = NFSERR_BADXDR;
2415 if (NFSISSET_ATTRBIT(attrbitp, bitpos))
2417 case NFSATTRBIT_SIZE:
2418 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER);
2419 nvap->na_size = fxdr_hyper(tl);
2420 attrsum += NFSX_HYPER;
2422 case NFSATTRBIT_ACL:
2423 error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize,
2427 if (aceerr && !nd->nd_repstat)
2428 nd->nd_repstat = aceerr;
2431 case NFSATTRBIT_ARCHIVE:
2432 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2433 if (!nd->nd_repstat)
2434 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2435 attrsum += NFSX_UNSIGNED;
2437 case NFSATTRBIT_HIDDEN:
2438 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2439 if (!nd->nd_repstat)
2440 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2441 attrsum += NFSX_UNSIGNED;
2443 case NFSATTRBIT_MIMETYPE:
2444 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2445 i = fxdr_unsigned(int, *tl);
2446 error = nfsm_advance(nd, NFSM_RNDUP(i), -1);
2449 if (!nd->nd_repstat)
2450 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2451 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i));
2453 case NFSATTRBIT_MODE:
2454 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2455 nvap->na_mode = nfstov_mode(*tl);
2456 attrsum += NFSX_UNSIGNED;
2458 case NFSATTRBIT_OWNER:
2459 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2460 j = fxdr_unsigned(int, *tl);
2462 error = NFSERR_BADXDR;
2465 if (j > NFSV4_SMALLSTR)
2466 cp = malloc(j + 1, M_NFSSTRING, M_WAITOK);
2469 error = nfsrv_mtostr(nd, cp, j);
2471 if (j > NFSV4_SMALLSTR)
2472 free(cp, M_NFSSTRING);
2475 if (!nd->nd_repstat) {
2476 nd->nd_repstat = nfsv4_strtouid(nd, cp, j, &uid,
2478 if (!nd->nd_repstat)
2481 if (j > NFSV4_SMALLSTR)
2482 free(cp, M_NFSSTRING);
2483 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j));
2485 case NFSATTRBIT_OWNERGROUP:
2486 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2487 j = fxdr_unsigned(int, *tl);
2489 error = NFSERR_BADXDR;
2492 if (j > NFSV4_SMALLSTR)
2493 cp = malloc(j + 1, M_NFSSTRING, M_WAITOK);
2496 error = nfsrv_mtostr(nd, cp, j);
2498 if (j > NFSV4_SMALLSTR)
2499 free(cp, M_NFSSTRING);
2502 if (!nd->nd_repstat) {
2503 nd->nd_repstat = nfsv4_strtogid(nd, cp, j, &gid,
2505 if (!nd->nd_repstat)
2508 if (j > NFSV4_SMALLSTR)
2509 free(cp, M_NFSSTRING);
2510 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j));
2512 case NFSATTRBIT_SYSTEM:
2513 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2514 if (!nd->nd_repstat)
2515 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2516 attrsum += NFSX_UNSIGNED;
2518 case NFSATTRBIT_TIMEACCESSSET:
2519 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2520 attrsum += NFSX_UNSIGNED;
2521 if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) {
2522 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
2523 fxdr_nfsv4time(tl, &nvap->na_atime);
2525 attrsum += NFSX_V4TIME;
2527 vfs_timestamp(&nvap->na_atime);
2528 nvap->na_vaflags |= VA_UTIMES_NULL;
2531 case NFSATTRBIT_TIMEBACKUP:
2532 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
2533 if (!nd->nd_repstat)
2534 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2535 attrsum += NFSX_V4TIME;
2537 case NFSATTRBIT_TIMECREATE:
2538 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
2539 if (!nd->nd_repstat)
2540 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2541 attrsum += NFSX_V4TIME;
2543 case NFSATTRBIT_TIMEMODIFYSET:
2544 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2545 attrsum += NFSX_UNSIGNED;
2546 if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) {
2547 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
2548 fxdr_nfsv4time(tl, &nvap->na_mtime);
2549 nvap->na_vaflags &= ~VA_UTIMES_NULL;
2550 attrsum += NFSX_V4TIME;
2552 vfs_timestamp(&nvap->na_mtime);
2554 nvap->na_vaflags |= VA_UTIMES_NULL;
2558 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2560 * set bitpos so we drop out of the loop.
2562 bitpos = NFSATTRBIT_MAX;
2568 * some clients pad the attrlist, so we need to skip over the
2571 if (attrsum > attrsize) {
2572 error = NFSERR_BADXDR;
2574 attrsize = NFSM_RNDUP(attrsize);
2575 if (attrsum < attrsize)
2576 error = nfsm_advance(nd, attrsize - attrsum, -1);
2579 NFSEXITCODE2(error, nd);
2584 * Check/setup export credentials.
2587 nfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp,
2588 struct ucred *credanon)
2593 * Check/setup credentials.
2595 if (nd->nd_flag & ND_GSS)
2596 exp->nes_exflag &= ~MNT_EXPORTANON;
2599 * Check to see if the operation is allowed for this security flavor.
2600 * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to
2601 * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS.
2602 * Also, allow Secinfo, so that it can acquire the correct flavor(s).
2604 if (nfsvno_testexp(nd, exp) &&
2605 nd->nd_procnum != NFSV4OP_SECINFO &&
2606 nd->nd_procnum != NFSPROC_FSINFO) {
2607 if (nd->nd_flag & ND_NFSV4)
2608 error = NFSERR_WRONGSEC;
2610 error = (NFSERR_AUTHERR | AUTH_TOOWEAK);
2615 * Check to see if the file system is exported V4 only.
2617 if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) {
2618 error = NFSERR_PROGNOTV4;
2623 * Now, map the user credentials.
2624 * (Note that ND_AUTHNONE will only be set for an NFSv3
2625 * Fsinfo RPC. If set for anything else, this code might need
2628 if (NFSVNO_EXPORTED(exp) &&
2629 ((!(nd->nd_flag & ND_GSS) && nd->nd_cred->cr_uid == 0) ||
2630 NFSVNO_EXPORTANON(exp) ||
2631 (nd->nd_flag & ND_AUTHNONE))) {
2632 nd->nd_cred->cr_uid = credanon->cr_uid;
2633 nd->nd_cred->cr_gid = credanon->cr_gid;
2634 crsetgroups(nd->nd_cred, credanon->cr_ngroups,
2635 credanon->cr_groups);
2639 NFSEXITCODE2(error, nd);
2647 nfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp,
2648 struct ucred **credp)
2650 int i, error, *secflavors;
2652 error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp,
2653 &exp->nes_numsecflavor, &secflavors);
2655 if (nfs_rootfhset) {
2656 exp->nes_exflag = 0;
2657 exp->nes_numsecflavor = 0;
2661 /* Copy the security flavors. */
2662 for (i = 0; i < exp->nes_numsecflavor; i++)
2663 exp->nes_secflavors[i] = secflavors[i];
2670 * Get a vnode for a file handle and export stuff.
2673 nfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam,
2674 int lktype, struct vnode **vpp, struct nfsexstuff *exp,
2675 struct ucred **credp)
2677 int i, error, *secflavors;
2680 exp->nes_numsecflavor = 0;
2681 if (VFS_NEEDSGIANT(mp))
2684 error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, vpp);
2686 /* Make sure the server replies ESTALE to the client. */
2688 if (nam && !error) {
2689 error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp,
2690 &exp->nes_numsecflavor, &secflavors);
2692 if (nfs_rootfhset) {
2693 exp->nes_exflag = 0;
2694 exp->nes_numsecflavor = 0;
2700 /* Copy the security flavors. */
2701 for (i = 0; i < exp->nes_numsecflavor; i++)
2702 exp->nes_secflavors[i] = secflavors[i];
2705 if (error == 0 && lktype == LK_SHARED)
2707 * It would be much better to pass lktype to VFS_FHTOVP(),
2708 * but this will have to do until VFS_FHTOVP() has a lock
2709 * type argument like VFS_VGET().
2711 NFSVOPLOCK(*vpp, LK_DOWNGRADE | LK_RETRY);
2718 * nfsd_fhtovp() - convert a fh to a vnode ptr
2719 * - look up fsid in mount list (if not found ret error)
2720 * - get vp and export rights by calling nfsvno_fhtovp()
2721 * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon
2723 * - if mpp != NULL, return the mount point so that it can
2724 * be used for vn_finished_write() by the caller
2727 nfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype,
2728 struct vnode **vpp, struct nfsexstuff *exp,
2729 struct mount **mpp, int startwrite, struct thread *p)
2732 struct ucred *credanon;
2735 fhp = (fhandle_t *)nfp->nfsrvfh_data;
2737 * Check for the special case of the nfsv4root_fh.
2739 mp = vfs_busyfs(&fhp->fh_fsid);
2744 nd->nd_repstat = ESTALE;
2749 vn_start_write(NULL, mpp, V_WAIT);
2750 if (lktype == LK_SHARED && !(MNT_SHARED_WRITES(mp)))
2751 lktype = LK_EXCLUSIVE;
2753 nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp,
2758 * For NFSv4 without a pseudo root fs, unexported file handles
2759 * can be returned, so that Lookup works everywhere.
2761 if (!nd->nd_repstat && exp->nes_exflag == 0 &&
2762 !(nd->nd_flag & ND_NFSV4)) {
2764 nd->nd_repstat = EACCES;
2768 * Personally, I've never seen any point in requiring a
2769 * reserved port#, since only in the rare case where the
2770 * clients are all boxes with secure system priviledges,
2771 * does it provide any enhanced security, but... some people
2772 * believe it to be useful and keep putting this code back in.
2773 * (There is also some "security checker" out there that
2774 * complains if the nfs server doesn't enforce this.)
2775 * However, note the following:
2776 * RFC3530 (NFSv4) specifies that a reserved port# not be
2778 * RFC2623 recommends that, if a reserved port# is checked for,
2779 * that there be a way to turn that off--> ifdef'd.
2781 #ifdef NFS_REQRSVPORT
2782 if (!nd->nd_repstat) {
2783 struct sockaddr_in *saddr;
2784 struct sockaddr_in6 *saddr6;
2786 saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *);
2787 saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *);
2788 if (!(nd->nd_flag & ND_NFSV4) &&
2789 ((saddr->sin_family == AF_INET &&
2790 ntohs(saddr->sin_port) >= IPPORT_RESERVED) ||
2791 (saddr6->sin6_family == AF_INET6 &&
2792 ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) {
2794 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK);
2797 #endif /* NFS_REQRSVPORT */
2800 * Check/setup credentials.
2802 if (!nd->nd_repstat) {
2803 nd->nd_saveduid = nd->nd_cred->cr_uid;
2804 nd->nd_repstat = nfsd_excred(nd, exp, credanon);
2808 if (credanon != NULL)
2810 if (nd->nd_repstat) {
2812 vn_finished_write(mp);
2819 NFSEXITCODE2(0, nd);
2826 fp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp)
2828 struct filedesc *fdp;
2832 fdp = p->td_proc->p_fd;
2833 if (fd >= fdp->fd_nfiles ||
2834 (fp = fdp->fd_ofiles[fd]) == NULL) {
2846 * Called from nfssvc() to update the exports list. Just call
2847 * vfs_export(). This has to be done, since the v4 root fake fs isn't
2848 * in the mount list.
2851 nfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p)
2853 struct nfsex_args *nfsexargp = (struct nfsex_args *)argp;
2855 struct nameidata nd;
2858 error = vfs_export(&nfsv4root_mnt, &nfsexargp->export);
2859 if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0)
2861 else if (error == 0) {
2862 if (nfsexargp->fspec == NULL) {
2867 * If fspec != NULL, this is the v4root path.
2869 NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_USERSPACE,
2870 nfsexargp->fspec, p);
2871 if ((error = namei(&nd)) != 0)
2873 error = nfsvno_getfh(nd.ni_vp, &fh, p);
2876 nfs_rootfh.nfsrvfh_len = NFSX_MYFH;
2877 NFSBCOPY((caddr_t)&fh,
2878 nfs_rootfh.nfsrvfh_data,
2879 sizeof (fhandle_t));
2890 * Get the tcp socket sequence numbers we need.
2891 * (Maybe this should be moved to the tcp sources?)
2894 nfsrv_getsocksndseq(struct socket *so, tcp_seq *maxp, tcp_seq *unap)
2900 inp = sotoinpcb(so);
2901 KASSERT(inp != NULL, ("nfsrv_getsocksndseq: inp == NULL"));
2903 if (inp->inp_flags & (INP_TIMEWAIT | INP_DROPPED)) {
2908 tp = intotcpcb(inp);
2909 if (tp->t_state != TCPS_ESTABLISHED) {
2914 *maxp = tp->snd_max;
2915 *unap = tp->snd_una;
2924 * This function needs to test to see if the system is near its limit
2925 * for memory allocation via malloc() or mget() and return True iff
2926 * either of these resources are near their limit.
2927 * XXX (For now, this is just a stub.)
2929 int nfsrv_testmalloclimit = 0;
2931 nfsrv_mallocmget_limit(void)
2933 static int printmesg = 0;
2934 static int testval = 1;
2936 if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) {
2937 if ((printmesg++ % 100) == 0)
2938 printf("nfsd: malloc/mget near limit\n");
2945 * BSD specific initialization of a mount point.
2950 static int inited = 0;
2955 nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED);
2956 TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist);
2957 TAILQ_INIT(&nfsv4root_mnt.mnt_activevnodelist);
2958 nfsv4root_mnt.mnt_export = NULL;
2959 TAILQ_INIT(&nfsv4root_opt);
2960 TAILQ_INIT(&nfsv4root_newopt);
2961 nfsv4root_mnt.mnt_opt = &nfsv4root_opt;
2962 nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt;
2963 nfsv4root_mnt.mnt_nvnodelistsize = 0;
2964 nfsv4root_mnt.mnt_activevnodelistsize = 0;
2968 * Get a vnode for a file handle, without checking exports, etc.
2971 nfsvno_getvp(fhandle_t *fhp)
2977 mp = vfs_busyfs(&fhp->fh_fsid);
2980 error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, &vp);
2988 * Do a local VOP_ADVLOCK().
2991 nfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first,
2992 u_int64_t end, struct thread *td)
2998 if (nfsrv_dolocallocks == 0)
3001 /* Check for VI_DOOMED here, so that VOP_ADVLOCK() isn't performed. */
3002 if ((vp->v_iflag & VI_DOOMED) != 0) {
3007 fl.l_whence = SEEK_SET;
3009 fl.l_start = (off_t)first;
3010 if (end == NFS64BITSSET) {
3014 fl.l_len = (off_t)tlen;
3017 * For FreeBSD8, the l_pid and l_sysid must be set to the same
3018 * values for all calls, so that all locks will be held by the
3019 * nfsd server. (The nfsd server handles conflicts between the
3021 * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024
3022 * bytes, so it can't be put in l_sysid.
3024 if (nfsv4_sysid == 0)
3025 nfsv4_sysid = nlm_acquire_next_sysid();
3026 fl.l_pid = (pid_t)0;
3027 fl.l_sysid = (int)nfsv4_sysid;
3029 NFSVOPUNLOCK(vp, 0);
3030 if (ftype == F_UNLCK)
3031 error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl,
3032 (F_POSIX | F_REMOTE));
3034 error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl,
3035 (F_POSIX | F_REMOTE));
3036 NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY);
3044 * Check the nfsv4 root exports.
3047 nfsvno_v4rootexport(struct nfsrv_descript *nd)
3049 struct ucred *credanon;
3050 int exflags, error = 0, numsecflavor, *secflavors, i;
3052 error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags,
3053 &credanon, &numsecflavor, &secflavors);
3055 error = NFSERR_PROGUNAVAIL;
3058 if (credanon != NULL)
3060 for (i = 0; i < numsecflavor; i++) {
3061 if (secflavors[i] == AUTH_SYS)
3062 nd->nd_flag |= ND_EXAUTHSYS;
3063 else if (secflavors[i] == RPCSEC_GSS_KRB5)
3064 nd->nd_flag |= ND_EXGSS;
3065 else if (secflavors[i] == RPCSEC_GSS_KRB5I)
3066 nd->nd_flag |= ND_EXGSSINTEGRITY;
3067 else if (secflavors[i] == RPCSEC_GSS_KRB5P)
3068 nd->nd_flag |= ND_EXGSSPRIVACY;
3077 * Nfs server psuedo system call for the nfsd's
3083 nfssvc_nfsd(struct thread *td, struct nfssvc_args *uap)
3086 struct nfsd_addsock_args sockarg;
3087 struct nfsd_nfsd_args nfsdarg;
3090 if (uap->flag & NFSSVC_NFSDADDSOCK) {
3091 error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg));
3095 * Since we don't know what rights might be required,
3096 * pretend that we need them all. It is better to be too
3097 * careful than too reckless.
3099 if ((error = fget(td, sockarg.sock, CAP_SOCK_ALL, &fp)) != 0)
3101 if (fp->f_type != DTYPE_SOCKET) {
3106 error = nfsrvd_addsock(fp);
3108 } else if (uap->flag & NFSSVC_NFSDNFSD) {
3109 if (uap->argp == NULL) {
3113 error = copyin(uap->argp, (caddr_t)&nfsdarg,
3117 error = nfsrvd_nfsd(td, &nfsdarg);
3119 error = nfssvc_srvcall(td, uap, td->td_ucred);
3128 nfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred)
3130 struct nfsex_args export;
3131 struct file *fp = NULL;
3133 struct nfsd_clid adminrevoke;
3134 struct nfsd_dumplist dumplist;
3135 struct nfsd_dumpclients *dumpclients;
3136 struct nfsd_dumplocklist dumplocklist;
3137 struct nfsd_dumplocks *dumplocks;
3138 struct nameidata nd;
3140 int error = EINVAL, igotlock;
3142 static int suspend_nfsd = 0;
3144 if (uap->flag & NFSSVC_PUBLICFH) {
3145 NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data,
3146 sizeof (fhandle_t));
3147 error = copyin(uap->argp,
3148 &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t));
3151 } else if (uap->flag & NFSSVC_V4ROOTEXPORT) {
3152 error = copyin(uap->argp,(caddr_t)&export,
3153 sizeof (struct nfsex_args));
3155 error = nfsrv_v4rootexport(&export, cred, p);
3156 } else if (uap->flag & NFSSVC_NOPUBLICFH) {
3159 } else if (uap->flag & NFSSVC_STABLERESTART) {
3160 error = copyin(uap->argp, (caddr_t)&stablefd,
3163 error = fp_getfvp(p, stablefd, &fp, &vp);
3164 if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE))
3166 if (!error && newnfs_numnfsd != 0)
3169 nfsrv_stablefirst.nsf_fp = fp;
3170 nfsrv_setupstable(p);
3172 } else if (uap->flag & NFSSVC_ADMINREVOKE) {
3173 error = copyin(uap->argp, (caddr_t)&adminrevoke,
3174 sizeof (struct nfsd_clid));
3176 error = nfsrv_adminrevoke(&adminrevoke, p);
3177 } else if (uap->flag & NFSSVC_DUMPCLIENTS) {
3178 error = copyin(uap->argp, (caddr_t)&dumplist,
3179 sizeof (struct nfsd_dumplist));
3180 if (!error && (dumplist.ndl_size < 1 ||
3181 dumplist.ndl_size > NFSRV_MAXDUMPLIST))
3184 len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size;
3185 dumpclients = (struct nfsd_dumpclients *)malloc(len,
3187 nfsrv_dumpclients(dumpclients, dumplist.ndl_size);
3188 error = copyout(dumpclients,
3189 CAST_USER_ADDR_T(dumplist.ndl_list), len);
3190 free((caddr_t)dumpclients, M_TEMP);
3192 } else if (uap->flag & NFSSVC_DUMPLOCKS) {
3193 error = copyin(uap->argp, (caddr_t)&dumplocklist,
3194 sizeof (struct nfsd_dumplocklist));
3195 if (!error && (dumplocklist.ndllck_size < 1 ||
3196 dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST))
3199 error = nfsrv_lookupfilename(&nd,
3200 dumplocklist.ndllck_fname, p);
3202 len = sizeof (struct nfsd_dumplocks) *
3203 dumplocklist.ndllck_size;
3204 dumplocks = (struct nfsd_dumplocks *)malloc(len,
3206 nfsrv_dumplocks(nd.ni_vp, dumplocks,
3207 dumplocklist.ndllck_size, p);
3209 error = copyout(dumplocks,
3210 CAST_USER_ADDR_T(dumplocklist.ndllck_list), len);
3211 free((caddr_t)dumplocks, M_TEMP);
3213 } else if (uap->flag & NFSSVC_BACKUPSTABLE) {
3216 nfsd_master_pid = procp->p_pid;
3217 bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1);
3218 nfsd_master_start = procp->p_stats->p_start;
3219 nfsd_master_proc = procp;
3221 } else if ((uap->flag & NFSSVC_SUSPENDNFSD) != 0) {
3222 NFSLOCKV4ROOTMUTEX();
3223 if (suspend_nfsd == 0) {
3224 /* Lock out all nfsd threads */
3226 igotlock = nfsv4_lock(&nfsd_suspend_lock, 1,
3227 NULL, NFSV4ROOTLOCKMUTEXPTR, NULL);
3228 } while (igotlock == 0 && suspend_nfsd == 0);
3231 NFSUNLOCKV4ROOTMUTEX();
3233 } else if ((uap->flag & NFSSVC_RESUMENFSD) != 0) {
3234 NFSLOCKV4ROOTMUTEX();
3235 if (suspend_nfsd != 0) {
3236 nfsv4_unlock(&nfsd_suspend_lock, 0);
3239 NFSUNLOCKV4ROOTMUTEX();
3249 * Returns 0 if ok, 1 otherwise.
3252 nfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp)
3257 * This seems odd, but allow the case where the security flavor
3258 * list is empty. This happens when NFSv4 is traversing non-exported
3259 * file systems. Exported file systems should always have a non-empty
3260 * security flavor list.
3262 if (exp->nes_numsecflavor == 0)
3265 for (i = 0; i < exp->nes_numsecflavor; i++) {
3267 * The tests for privacy and integrity must be first,
3268 * since ND_GSS is set for everything but AUTH_SYS.
3270 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P &&
3271 (nd->nd_flag & ND_GSSPRIVACY))
3273 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I &&
3274 (nd->nd_flag & ND_GSSINTEGRITY))
3276 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 &&
3277 (nd->nd_flag & ND_GSS))
3279 if (exp->nes_secflavors[i] == AUTH_SYS &&
3280 (nd->nd_flag & ND_GSS) == 0)
3287 * Calculate a hash value for the fid in a file handle.
3290 nfsrv_hashfh(fhandle_t *fhp)
3294 hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0);
3299 * Signal the userland master nfsd to backup the stable restart file.
3302 nfsrv_backupstable(void)
3306 if (nfsd_master_proc != NULL) {
3307 procp = pfind(nfsd_master_pid);
3308 /* Try to make sure it is the correct process. */
3309 if (procp == nfsd_master_proc &&
3310 procp->p_stats->p_start.tv_sec ==
3311 nfsd_master_start.tv_sec &&
3312 procp->p_stats->p_start.tv_usec ==
3313 nfsd_master_start.tv_usec &&
3314 strcmp(procp->p_comm, nfsd_master_comm) == 0)
3315 kern_psignal(procp, SIGUSR2);
3317 nfsd_master_proc = NULL;
3324 extern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *);
3327 * Called once to initialize data structures...
3330 nfsd_modevent(module_t mod, int type, void *data)
3333 static int loaded = 0;
3340 for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) {
3341 snprintf(nfsrchash_table[i].lock_name,
3342 sizeof(nfsrchash_table[i].lock_name), "nfsrc_tcp%d",
3344 mtx_init(&nfsrchash_table[i].mtx,
3345 nfsrchash_table[i].lock_name, NULL, MTX_DEF);
3347 mtx_init(&nfsrc_udpmtx, "nfs_udpcache_mutex", NULL, MTX_DEF);
3348 mtx_init(&nfs_v4root_mutex, "nfs_v4root_mutex", NULL, MTX_DEF);
3349 mtx_init(&nfsv4root_mnt.mnt_mtx, "struct mount mtx", NULL,
3351 lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0);
3358 #ifdef VV_DISABLEDELEG
3359 vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation;
3360 vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation;
3362 nfsd_call_servertimer = nfsrv_servertimer;
3363 nfsd_call_nfsd = nfssvc_nfsd;
3368 if (newnfs_numnfsd != 0) {
3373 #ifdef VV_DISABLEDELEG
3374 vn_deleg_ops.vndeleg_recall = NULL;
3375 vn_deleg_ops.vndeleg_disable = NULL;
3377 nfsd_call_servertimer = NULL;
3378 nfsd_call_nfsd = NULL;
3380 /* Clean out all NFSv4 state. */
3381 nfsrv_throwawayallstate(curthread);
3383 /* Clean the NFS server reply cache */
3384 nfsrvd_cleancache();
3386 /* Free up the krpc server pool. */
3387 if (nfsrvd_pool != NULL)
3388 svcpool_destroy(nfsrvd_pool);
3390 /* and get rid of the locks */
3391 for (i = 0; i < NFSRVCACHE_HASHSIZE; i++)
3392 mtx_destroy(&nfsrchash_table[i].mtx);
3393 mtx_destroy(&nfsrc_udpmtx);
3394 mtx_destroy(&nfs_v4root_mutex);
3395 mtx_destroy(&nfsv4root_mnt.mnt_mtx);
3396 lockdestroy(&nfsv4root_mnt.mnt_explock);
3408 static moduledata_t nfsd_mod = {
3413 DECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY);
3415 /* So that loader and kldload(2) can find us, wherever we are.. */
3416 MODULE_VERSION(nfsd, 1);
3417 MODULE_DEPEND(nfsd, nfscommon, 1, 1, 1);
3418 MODULE_DEPEND(nfsd, nfslock, 1, 1, 1);
3419 MODULE_DEPEND(nfsd, nfslockd, 1, 1, 1);
3420 MODULE_DEPEND(nfsd, krpc, 1, 1, 1);
3421 MODULE_DEPEND(nfsd, nfssvc, 1, 1, 1);