2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
8 * Rick Macklem at The University of Guelph.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
39 #include <sys/capsicum.h>
40 #include <sys/extattr.h>
43 * Functions that perform the vfs operations required by the routines in
44 * nfsd_serv.c. It is hoped that this change will make the server more
48 #include <fs/nfs/nfsport.h>
50 #include <sys/sysctl.h>
51 #include <nlm/nlm_prot.h>
54 FEATURE(nfsd, "NFSv4 server");
56 extern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1;
57 extern int nfsrv_useacl;
58 extern int newnfs_numnfsd;
59 extern struct mount nfsv4root_mnt;
60 extern struct nfsrv_stablefirst nfsrv_stablefirst;
61 extern void (*nfsd_call_servertimer)(void);
62 extern SVCPOOL *nfsrvd_pool;
63 extern struct nfsv4lock nfsd_suspend_lock;
64 extern struct nfsclienthashhead *nfsclienthash;
65 extern struct nfslockhashhead *nfslockhash;
66 extern struct nfssessionhash *nfssessionhash;
67 extern int nfsrv_sessionhashsize;
68 extern struct nfsstatsv1 nfsstatsv1;
69 extern struct nfslayouthash *nfslayouthash;
70 extern int nfsrv_layouthashsize;
71 extern struct mtx nfsrv_dslock_mtx;
72 extern int nfs_pnfsiothreads;
73 extern struct nfsdontlisthead nfsrv_dontlisthead;
74 extern volatile int nfsrv_dontlistlen;
75 extern volatile int nfsrv_devidcnt;
76 extern int nfsrv_maxpnfsmirror;
77 struct vfsoptlist nfsv4root_opt, nfsv4root_newopt;
80 struct nfsrchash_bucket nfsrchash_table[NFSRVCACHE_HASHSIZE];
81 struct nfsrchash_bucket nfsrcahash_table[NFSRVCACHE_HASHSIZE];
82 struct mtx nfsrc_udpmtx;
83 struct mtx nfs_v4root_mutex;
84 struct mtx nfsrv_dontlistlock_mtx;
85 struct mtx nfsrv_recalllock_mtx;
86 struct nfsrvfh nfs_rootfh, nfs_pubfh;
87 int nfs_pubfhset = 0, nfs_rootfhset = 0;
88 struct proc *nfsd_master_proc = NULL;
89 int nfsd_debuglevel = 0;
90 static pid_t nfsd_master_pid = (pid_t)-1;
91 static char nfsd_master_comm[MAXCOMLEN + 1];
92 static struct timeval nfsd_master_start;
93 static uint32_t nfsv4_sysid = 0;
94 static fhandle_t zerofh;
96 static int nfssvc_srvcall(struct thread *, struct nfssvc_args *,
99 int nfsrv_enable_crossmntpt = 1;
100 static int nfs_commit_blks;
101 static int nfs_commit_miss;
102 extern int nfsrv_issuedelegs;
103 extern int nfsrv_dolocallocks;
104 extern int nfsd_enable_stringtouid;
105 extern struct nfsdevicehead nfsrv_devidhead;
107 static void nfsrv_pnfscreate(struct vnode *, struct vattr *, struct ucred *,
109 static void nfsrv_pnfsremovesetup(struct vnode *, NFSPROC_T *, struct vnode **,
110 int *, char *, fhandle_t *);
111 static void nfsrv_pnfsremove(struct vnode **, int, char *, fhandle_t *,
113 static int nfsrv_proxyds(struct nfsrv_descript *, struct vnode *, off_t, int,
114 struct ucred *, struct thread *, int, struct mbuf **, char *,
115 struct mbuf **, struct nfsvattr *, struct acl *);
116 static int nfsrv_setextattr(struct vnode *, struct nfsvattr *, NFSPROC_T *);
117 static int nfsrv_readdsrpc(fhandle_t *, off_t, int, struct ucred *,
118 NFSPROC_T *, struct nfsmount *, struct mbuf **, struct mbuf **);
119 static int nfsrv_writedsrpc(fhandle_t *, off_t, int, struct ucred *,
120 NFSPROC_T *, struct vnode *, struct nfsmount **, int, struct mbuf **,
122 static int nfsrv_setacldsrpc(fhandle_t *, struct ucred *, NFSPROC_T *,
123 struct vnode *, struct nfsmount **, int, struct acl *, int *);
124 static int nfsrv_setattrdsrpc(fhandle_t *, struct ucred *, NFSPROC_T *,
125 struct vnode *, struct nfsmount **, int, struct nfsvattr *, int *);
126 static int nfsrv_getattrdsrpc(fhandle_t *, struct ucred *, NFSPROC_T *,
127 struct vnode *, struct nfsmount *, struct nfsvattr *);
128 static int nfsrv_putfhname(fhandle_t *, char *);
129 static int nfsrv_pnfslookupds(struct vnode *, struct vnode *,
130 struct pnfsdsfile *, struct vnode **, NFSPROC_T *);
131 static void nfsrv_pnfssetfh(struct vnode *, struct pnfsdsfile *,
132 struct vnode *, NFSPROC_T *);
133 static int nfsrv_dsremove(struct vnode *, char *, struct ucred *, NFSPROC_T *);
134 static int nfsrv_dssetacl(struct vnode *, struct acl *, struct ucred *,
136 static int nfsrv_pnfsstatfs(struct statfs *);
138 int nfs_pnfsio(task_fn_t *, void *);
140 SYSCTL_NODE(_vfs, OID_AUTO, nfsd, CTLFLAG_RW, 0, "NFS server");
141 SYSCTL_INT(_vfs_nfsd, OID_AUTO, mirrormnt, CTLFLAG_RW,
142 &nfsrv_enable_crossmntpt, 0, "Enable nfsd to cross mount points");
143 SYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks,
145 SYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss,
147 SYSCTL_INT(_vfs_nfsd, OID_AUTO, issue_delegations, CTLFLAG_RW,
148 &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations");
149 SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_locallocks, CTLFLAG_RW,
150 &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files");
151 SYSCTL_INT(_vfs_nfsd, OID_AUTO, debuglevel, CTLFLAG_RW, &nfsd_debuglevel,
152 0, "Debug level for NFS server");
153 SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_stringtouid, CTLFLAG_RW,
154 &nfsd_enable_stringtouid, 0, "Enable nfsd to accept numeric owner_names");
155 static int nfsrv_pnfsgetdsattr = 1;
156 SYSCTL_INT(_vfs_nfsd, OID_AUTO, pnfsgetdsattr, CTLFLAG_RW,
157 &nfsrv_pnfsgetdsattr, 0, "When set getattr gets DS attributes via RPC");
160 * nfsrv_dsdirsize can only be increased and only when the nfsd threads are
162 * The dsN subdirectories for the increased values must have been created
163 * on all DS servers before this increase is done.
165 u_int nfsrv_dsdirsize = 20;
167 sysctl_dsdirsize(SYSCTL_HANDLER_ARGS)
169 int error, newdsdirsize;
171 newdsdirsize = nfsrv_dsdirsize;
172 error = sysctl_handle_int(oidp, &newdsdirsize, 0, req);
173 if (error != 0 || req->newptr == NULL)
175 if (newdsdirsize <= nfsrv_dsdirsize || newdsdirsize > 10000 ||
178 nfsrv_dsdirsize = newdsdirsize;
181 SYSCTL_PROC(_vfs_nfsd, OID_AUTO, dsdirsize, CTLTYPE_UINT | CTLFLAG_RW, 0,
182 sizeof(nfsrv_dsdirsize), sysctl_dsdirsize, "IU",
183 "Number of dsN subdirs on the DS servers");
185 #define MAX_REORDERED_RPC 16
186 #define NUM_HEURISTIC 1031
187 #define NHUSE_INIT 64
189 #define NHUSE_MAX 2048
191 static struct nfsheur {
192 struct vnode *nh_vp; /* vp to match (unreferenced pointer) */
193 off_t nh_nextoff; /* next offset for sequential detection */
194 int nh_use; /* use count for selection */
195 int nh_seqcount; /* heuristic */
196 } nfsheur[NUM_HEURISTIC];
200 * Heuristic to detect sequential operation.
202 static struct nfsheur *
203 nfsrv_sequential_heuristic(struct uio *uio, struct vnode *vp)
208 /* Locate best candidate. */
210 hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC;
213 if (nfsheur[hi].nh_vp == vp) {
217 if (nfsheur[hi].nh_use > 0)
218 --nfsheur[hi].nh_use;
219 hi = (hi + 1) % NUM_HEURISTIC;
220 if (nfsheur[hi].nh_use < nh->nh_use)
224 /* Initialize hint if this is a new file. */
225 if (nh->nh_vp != vp) {
227 nh->nh_nextoff = uio->uio_offset;
228 nh->nh_use = NHUSE_INIT;
229 if (uio->uio_offset == 0)
235 /* Calculate heuristic. */
236 if ((uio->uio_offset == 0 && nh->nh_seqcount > 0) ||
237 uio->uio_offset == nh->nh_nextoff) {
238 /* See comments in vfs_vnops.c:sequential_heuristic(). */
239 nh->nh_seqcount += howmany(uio->uio_resid, 16384);
240 if (nh->nh_seqcount > IO_SEQMAX)
241 nh->nh_seqcount = IO_SEQMAX;
242 } else if (qabs(uio->uio_offset - nh->nh_nextoff) <= MAX_REORDERED_RPC *
243 imax(vp->v_mount->mnt_stat.f_iosize, uio->uio_resid)) {
244 /* Probably a reordered RPC, leave seqcount alone. */
245 } else if (nh->nh_seqcount > 1) {
246 nh->nh_seqcount /= 2;
250 nh->nh_use += NHUSE_INC;
251 if (nh->nh_use > NHUSE_MAX)
252 nh->nh_use = NHUSE_MAX;
257 * Get attributes into nfsvattr structure.
260 nfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap,
261 struct nfsrv_descript *nd, struct thread *p, int vpislocked,
262 nfsattrbit_t *attrbitp)
264 int error, gotattr, lockedit = 0;
267 if (vpislocked == 0) {
269 * When vpislocked == 0, the vnode is either exclusively
270 * locked by this thread or not locked by this thread.
271 * As such, shared lock it, if not exclusively locked.
273 if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) {
275 NFSVOPLOCK(vp, LK_SHARED | LK_RETRY);
280 * Acquire the Change, Size and TimeModify attributes, as required.
281 * This needs to be done for regular files if:
282 * - non-NFSv4 RPCs or
283 * - when attrbitp == NULL or
284 * - an NFSv4 RPC with any of the above attributes in attrbitp.
285 * A return of 0 for nfsrv_proxyds() indicates that it has acquired
286 * these attributes. nfsrv_proxyds() will return an error if the
287 * server is not a pNFS one.
290 if (vp->v_type == VREG && nfsrv_devidcnt > 0 && (attrbitp == NULL ||
291 (nd->nd_flag & ND_NFSV4) == 0 ||
292 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_CHANGE) ||
293 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SIZE) ||
294 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEACCESS) ||
295 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEMODIFY))) {
296 error = nfsrv_proxyds(nd, vp, 0, 0, nd->nd_cred, p,
297 NFSPROC_GETATTR, NULL, NULL, NULL, &na, NULL);
302 error = VOP_GETATTR(vp, &nvap->na_vattr, nd->nd_cred);
307 * If we got the Change, Size and Modify Time from the DS,
311 nvap->na_atime = na.na_atime;
312 nvap->na_mtime = na.na_mtime;
313 nvap->na_filerev = na.na_filerev;
314 nvap->na_size = na.na_size;
316 NFSD_DEBUG(4, "nfsvno_getattr: gotattr=%d err=%d chg=%ju\n", gotattr,
317 error, (uintmax_t)na.na_filerev);
324 * Get a file handle for a vnode.
327 nfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p)
331 NFSBZERO((caddr_t)fhp, sizeof(fhandle_t));
332 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
333 error = VOP_VPTOFH(vp, &fhp->fh_fid);
340 * Perform access checking for vnodes obtained from file handles that would
341 * refer to files already opened by a Unix client. You cannot just use
342 * vn_writechk() and VOP_ACCESSX() for two reasons.
343 * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write
345 * 2 - The owner is to be given access irrespective of mode bits for some
346 * operations, so that processes that chmod after opening a file don't
350 nfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred,
351 struct nfsexstuff *exp, struct thread *p, int override, int vpislocked,
352 u_int32_t *supportedtypep)
355 int error = 0, getret = 0;
357 if (vpislocked == 0) {
358 if (NFSVOPLOCK(vp, LK_SHARED) != 0) {
363 if (accmode & VWRITE) {
364 /* Just vn_writechk() changed to check rdonly */
366 * Disallow write attempts on read-only file systems;
367 * unless the file is a socket or a block or character
368 * device resident on the file system.
370 if (NFSVNO_EXRDONLY(exp) ||
371 (vp->v_mount->mnt_flag & MNT_RDONLY)) {
372 switch (vp->v_type) {
382 * If there's shared text associated with
383 * the inode, try to free it up once. If
384 * we fail, we can't allow writing.
386 if (VOP_IS_TEXT(vp) && error == 0)
396 * Should the override still be applied when ACLs are enabled?
398 error = VOP_ACCESSX(vp, accmode, cred, p);
399 if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) {
401 * Try again with VEXPLICIT_DENY, to see if the test for
402 * deletion is supported.
404 error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p);
406 if (vp->v_type == VDIR) {
407 accmode &= ~(VDELETE | VDELETE_CHILD);
409 error = VOP_ACCESSX(vp, accmode, cred, p);
410 } else if (supportedtypep != NULL) {
411 *supportedtypep &= ~NFSACCESS_DELETE;
417 * Allow certain operations for the owner (reads and writes
418 * on files that are already open).
420 if (override != NFSACCCHK_NOOVERRIDE &&
421 (error == EPERM || error == EACCES)) {
422 if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT))
424 else if (override & NFSACCCHK_ALLOWOWNER) {
425 getret = VOP_GETATTR(vp, &vattr, cred);
426 if (getret == 0 && cred->cr_uid == vattr.va_uid)
439 * Set attribute(s) vnop.
442 nfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred,
443 struct thread *p, struct nfsexstuff *exp)
447 error = VOP_SETATTR(vp, &nvap->na_vattr, cred);
448 if (error == 0 && (nvap->na_vattr.va_uid != (uid_t)VNOVAL ||
449 nvap->na_vattr.va_gid != (gid_t)VNOVAL ||
450 nvap->na_vattr.va_size != VNOVAL ||
451 nvap->na_vattr.va_mode != (mode_t)VNOVAL ||
452 nvap->na_vattr.va_atime.tv_sec != VNOVAL ||
453 nvap->na_vattr.va_mtime.tv_sec != VNOVAL)) {
454 /* For a pNFS server, set the attributes on the DS file. */
455 error = nfsrv_proxyds(NULL, vp, 0, 0, cred, p, NFSPROC_SETATTR,
456 NULL, NULL, NULL, nvap, NULL);
465 * Set up nameidata for a lookup() call and do it.
468 nfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp,
469 struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p,
470 struct vnode **retdirp)
472 struct componentname *cnp = &ndp->ni_cnd;
476 int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen;
481 cnp->cn_nameptr = cnp->cn_pnbuf;
484 * Extract and set starting directory.
486 if (dp->v_type != VDIR) {
491 nfsvno_relpathbuf(ndp);
499 if (NFSVNO_EXRDONLY(exp))
500 cnp->cn_flags |= RDONLY;
501 ndp->ni_segflg = UIO_SYSSPACE;
503 if (nd->nd_flag & ND_PUBLOOKUP) {
505 if (cnp->cn_pnbuf[0] == '/') {
508 * Check for degenerate pathnames here, since lookup()
511 for (i = 1; i < ndp->ni_pathlen; i++)
512 if (cnp->cn_pnbuf[i] != '/')
514 if (i == ndp->ni_pathlen) {
515 error = NFSERR_ACCES;
521 } else if ((nfsrv_enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) ||
522 (nd->nd_flag & ND_NFSV4) == 0) {
524 * Only cross mount points for NFSv4 when doing a
525 * mount while traversing the file system above
526 * the mount point, unless nfsrv_enable_crossmntpt is set.
528 cnp->cn_flags |= NOCROSSMOUNT;
532 * Initialize for scan, set ni_startdir and bump ref on dp again
533 * because lookup() will dereference ni_startdir.
537 ndp->ni_startdir = dp;
538 ndp->ni_rootdir = rootvnode;
539 ndp->ni_topdir = NULL;
542 cnp->cn_flags |= LOCKLEAF;
544 cnp->cn_nameptr = cnp->cn_pnbuf;
546 * Call lookup() to do the real work. If an error occurs,
547 * ndp->ni_vp and ni_dvp are left uninitialized or NULL and
548 * we do not have to dereference anything before returning.
549 * In either case ni_startdir will be dereferenced and NULLed
557 * Check for encountering a symbolic link. Trivial
558 * termination occurs if no symlink encountered.
560 if ((cnp->cn_flags & ISSYMLINK) == 0) {
561 if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0)
562 nfsvno_relpathbuf(ndp);
563 if (ndp->ni_vp && !lockleaf)
564 NFSVOPUNLOCK(ndp->ni_vp, 0);
571 if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1)
572 NFSVOPUNLOCK(ndp->ni_dvp, 0);
573 if (!(nd->nd_flag & ND_PUBLOOKUP)) {
578 if (ndp->ni_loopcnt++ >= MAXSYMLINKS) {
582 if (ndp->ni_pathlen > 1)
583 cp = uma_zalloc(namei_zone, M_WAITOK);
587 aiov.iov_len = MAXPATHLEN;
588 auio.uio_iov = &aiov;
591 auio.uio_rw = UIO_READ;
592 auio.uio_segflg = UIO_SYSSPACE;
594 auio.uio_resid = MAXPATHLEN;
595 error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred);
598 if (ndp->ni_pathlen > 1)
599 uma_zfree(namei_zone, cp);
605 linklen = MAXPATHLEN - auio.uio_resid;
610 if (linklen + ndp->ni_pathlen >= MAXPATHLEN) {
611 error = ENAMETOOLONG;
616 * Adjust or replace path
618 if (ndp->ni_pathlen > 1) {
619 NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen);
620 uma_zfree(namei_zone, cnp->cn_pnbuf);
623 cnp->cn_pnbuf[linklen] = '\0';
624 ndp->ni_pathlen += linklen;
627 * Cleanup refs for next loop and check if root directory
628 * should replace current directory. Normally ni_dvp
629 * becomes the new base directory and is cleaned up when
630 * we loop. Explicitly null pointers after invalidation
631 * to clarify operation.
636 if (cnp->cn_pnbuf[0] == '/') {
638 ndp->ni_dvp = ndp->ni_rootdir;
641 ndp->ni_startdir = ndp->ni_dvp;
645 cnp->cn_flags &= ~LOCKLEAF;
649 nfsvno_relpathbuf(ndp);
652 ndp->ni_startdir = NULL;
653 } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) {
658 NFSEXITCODE2(error, nd);
663 * Set up a pathname buffer and return a pointer to it and, optionally
664 * set a hash pointer.
667 nfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp)
669 struct componentname *cnp = &ndp->ni_cnd;
671 cnp->cn_flags |= (NOMACCHECK | HASBUF);
672 cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK);
675 *bufpp = cnp->cn_pnbuf;
679 * Release the above path buffer, if not released by nfsvno_namei().
682 nfsvno_relpathbuf(struct nameidata *ndp)
685 if ((ndp->ni_cnd.cn_flags & HASBUF) == 0)
687 uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf);
688 ndp->ni_cnd.cn_flags &= ~HASBUF;
692 * Readlink vnode op into an mbuf list.
695 nfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p,
696 struct mbuf **mpp, struct mbuf **mpendp, int *lenp)
698 struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN];
699 struct iovec *ivp = iv;
700 struct uio io, *uiop = &io;
701 struct mbuf *mp, *mp2 = NULL, *mp3 = NULL;
702 int i, len, tlen, error = 0;
706 while (len < NFS_MAXPATHLEN) {
708 MCLGET(mp, M_WAITOK);
709 mp->m_len = M_SIZE(mp);
716 if ((len + mp->m_len) > NFS_MAXPATHLEN) {
717 mp->m_len = NFS_MAXPATHLEN - len;
718 len = NFS_MAXPATHLEN;
722 ivp->iov_base = mtod(mp, caddr_t);
723 ivp->iov_len = mp->m_len;
728 uiop->uio_iovcnt = i;
729 uiop->uio_offset = 0;
730 uiop->uio_resid = len;
731 uiop->uio_rw = UIO_READ;
732 uiop->uio_segflg = UIO_SYSSPACE;
734 error = VOP_READLINK(vp, uiop, cred);
740 if (uiop->uio_resid > 0) {
741 len -= uiop->uio_resid;
742 tlen = NFSM_RNDUP(len);
743 nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len);
755 * Read vnode op call into mbuf list.
758 nfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred,
759 struct thread *p, struct mbuf **mpp, struct mbuf **mpendp)
765 int error = 0, len, left, siz, tlen, ioflag = 0;
766 struct mbuf *m2 = NULL, *m3;
767 struct uio io, *uiop = &io;
771 * Attempt to read from a DS file. A return of ENOENT implies
772 * there is no DS file to read.
774 error = nfsrv_proxyds(NULL, vp, off, cnt, cred, p, NFSPROC_READDS, mpp,
775 NULL, mpendp, NULL, NULL);
779 len = left = NFSM_RNDUP(cnt);
782 * Generate the mbuf list with the uio_iov ref. to it.
789 siz = min(M_TRAILINGSPACE(m), left);
798 iv = malloc(i * sizeof (struct iovec),
800 uiop->uio_iov = iv2 = iv;
806 panic("nfsvno_read iov");
807 siz = min(M_TRAILINGSPACE(m), left);
809 iv->iov_base = mtod(m, caddr_t) + m->m_len;
818 uiop->uio_iovcnt = i;
819 uiop->uio_offset = off;
820 uiop->uio_resid = len;
821 uiop->uio_rw = UIO_READ;
822 uiop->uio_segflg = UIO_SYSSPACE;
824 nh = nfsrv_sequential_heuristic(uiop, vp);
825 ioflag |= nh->nh_seqcount << IO_SEQSHIFT;
826 /* XXX KDM make this more systematic? */
827 nfsstatsv1.srvbytes[NFSV4OP_READ] += uiop->uio_resid;
828 error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred);
835 nh->nh_nextoff = uiop->uio_offset;
836 tlen = len - uiop->uio_resid;
837 cnt = cnt < tlen ? cnt : tlen;
838 tlen = NFSM_RNDUP(cnt);
842 } else if (len != tlen || tlen != cnt)
843 nfsrv_adj(m3, len - tlen, tlen - cnt);
853 * Write vnode op from an mbuf list.
856 nfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int *stable,
857 struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p)
863 struct uio io, *uiop = &io;
867 * Attempt to write to a DS file. A return of ENOENT implies
868 * there is no DS file to write.
870 error = nfsrv_proxyds(NULL, vp, off, retlen, cred, p, NFSPROC_WRITEDS,
871 &mp, cp, NULL, NULL, NULL);
872 if (error != ENOENT) {
873 *stable = NFSWRITE_FILESYNC;
877 ivp = malloc(cnt * sizeof (struct iovec), M_TEMP,
879 uiop->uio_iov = iv = ivp;
880 uiop->uio_iovcnt = cnt;
881 i = mtod(mp, caddr_t) + mp->m_len - cp;
885 panic("nfsvno_write");
896 cp = mtod(mp, caddr_t);
900 if (*stable == NFSWRITE_UNSTABLE)
901 ioflags = IO_NODELOCKED;
903 ioflags = (IO_SYNC | IO_NODELOCKED);
904 uiop->uio_resid = retlen;
905 uiop->uio_rw = UIO_WRITE;
906 uiop->uio_segflg = UIO_SYSSPACE;
908 uiop->uio_offset = off;
909 nh = nfsrv_sequential_heuristic(uiop, vp);
910 ioflags |= nh->nh_seqcount << IO_SEQSHIFT;
911 /* XXX KDM make this more systematic? */
912 nfsstatsv1.srvbytes[NFSV4OP_WRITE] += uiop->uio_resid;
913 error = VOP_WRITE(vp, uiop, ioflags, cred);
915 nh->nh_nextoff = uiop->uio_offset;
923 * Common code for creating a regular file (plus special files for V2).
926 nfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp,
927 struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp,
928 int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp)
933 error = nd->nd_repstat;
934 if (!error && ndp->ni_vp == NULL) {
935 if (nvap->na_type == VREG || nvap->na_type == VSOCK) {
936 vrele(ndp->ni_startdir);
937 error = VOP_CREATE(ndp->ni_dvp,
938 &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr);
939 /* For a pNFS server, create the data file on a DS. */
940 if (error == 0 && nvap->na_type == VREG) {
942 * Create a data file on a DS for a pNFS server.
943 * This function just returns if not
944 * running a pNFS DS or the creation fails.
946 nfsrv_pnfscreate(ndp->ni_vp, &nvap->na_vattr,
950 nfsvno_relpathbuf(ndp);
952 if (*exclusive_flagp) {
953 *exclusive_flagp = 0;
954 NFSVNO_ATTRINIT(nvap);
955 nvap->na_atime.tv_sec = cverf[0];
956 nvap->na_atime.tv_nsec = cverf[1];
957 error = VOP_SETATTR(ndp->ni_vp,
958 &nvap->na_vattr, nd->nd_cred);
962 error = NFSERR_NOTSUPP;
967 * NFS V2 Only. nfsrvd_mknod() does this for V3.
968 * (This implies, just get out on an error.)
970 } else if (nvap->na_type == VCHR || nvap->na_type == VBLK ||
971 nvap->na_type == VFIFO) {
972 if (nvap->na_type == VCHR && rdev == 0xffffffff)
973 nvap->na_type = VFIFO;
974 if (nvap->na_type != VFIFO &&
975 (error = priv_check_cred(nd->nd_cred,
976 PRIV_VFS_MKNOD_DEV, 0))) {
977 vrele(ndp->ni_startdir);
978 nfsvno_relpathbuf(ndp);
982 nvap->na_rdev = rdev;
983 error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp,
984 &ndp->ni_cnd, &nvap->na_vattr);
986 nfsvno_relpathbuf(ndp);
987 vrele(ndp->ni_startdir);
991 vrele(ndp->ni_startdir);
992 nfsvno_relpathbuf(ndp);
1000 * Handle cases where error is already set and/or
1002 * 1 - clean up the lookup
1003 * 2 - iff !error and na_size set, truncate it
1005 vrele(ndp->ni_startdir);
1006 nfsvno_relpathbuf(ndp);
1008 if (ndp->ni_dvp == *vpp)
1012 if (!error && nvap->na_size != VNOVAL) {
1013 error = nfsvno_accchk(*vpp, VWRITE,
1014 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE,
1015 NFSACCCHK_VPISLOCKED, NULL);
1017 tempsize = nvap->na_size;
1018 NFSVNO_ATTRINIT(nvap);
1019 nvap->na_size = tempsize;
1020 error = VOP_SETATTR(*vpp,
1021 &nvap->na_vattr, nd->nd_cred);
1034 * Do a mknod vnode op.
1037 nfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred,
1043 vtyp = nvap->na_type;
1045 * Iff doesn't exist, create it.
1048 vrele(ndp->ni_startdir);
1049 nfsvno_relpathbuf(ndp);
1055 if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) {
1056 vrele(ndp->ni_startdir);
1057 nfsvno_relpathbuf(ndp);
1059 error = NFSERR_BADTYPE;
1062 if (vtyp == VSOCK) {
1063 vrele(ndp->ni_startdir);
1064 error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp,
1065 &ndp->ni_cnd, &nvap->na_vattr);
1067 nfsvno_relpathbuf(ndp);
1069 if (nvap->na_type != VFIFO &&
1070 (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) {
1071 vrele(ndp->ni_startdir);
1072 nfsvno_relpathbuf(ndp);
1076 error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp,
1077 &ndp->ni_cnd, &nvap->na_vattr);
1079 nfsvno_relpathbuf(ndp);
1080 vrele(ndp->ni_startdir);
1082 * Since VOP_MKNOD returns the ni_vp, I can't
1083 * see any reason to do the lookup.
1096 nfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid,
1097 struct ucred *cred, struct thread *p, struct nfsexstuff *exp)
1101 if (ndp->ni_vp != NULL) {
1102 if (ndp->ni_dvp == ndp->ni_vp)
1107 nfsvno_relpathbuf(ndp);
1111 error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd,
1114 nfsvno_relpathbuf(ndp);
1125 nfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp,
1126 int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p,
1127 struct nfsexstuff *exp)
1132 vrele(ndp->ni_startdir);
1133 nfsvno_relpathbuf(ndp);
1134 if (ndp->ni_dvp == ndp->ni_vp)
1143 error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd,
1144 &nvap->na_vattr, pathcp);
1146 vrele(ndp->ni_startdir);
1147 nfsvno_relpathbuf(ndp);
1149 * Although FreeBSD still had the lookup code in
1150 * it for 7/current, there doesn't seem to be any
1151 * point, since VOP_SYMLINK() returns the ni_vp.
1152 * Just vput it for v2.
1154 if (!not_v2 && !error)
1163 * Parse symbolic link arguments.
1164 * This function has an ugly side effect. It will malloc() an area for
1165 * the symlink and set iov_base to point to it, only if it succeeds.
1166 * So, if it returns with uiop->uio_iov->iov_base != NULL, that must
1170 nfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap,
1171 struct thread *p, char **pathcpp, int *lenp)
1174 char *pathcp = NULL;
1176 struct nfsv2_sattr *sp;
1180 if ((nd->nd_flag & ND_NFSV3) &&
1181 (error = nfsrv_sattr(nd, NULL, nvap, NULL, NULL, p)))
1183 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1184 len = fxdr_unsigned(int, *tl);
1185 if (len > NFS_MAXPATHLEN || len <= 0) {
1189 pathcp = malloc(len + 1, M_TEMP, M_WAITOK);
1190 error = nfsrv_mtostr(nd, pathcp, len);
1193 if (nd->nd_flag & ND_NFSV2) {
1194 NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
1195 nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode);
1199 NFSEXITCODE2(0, nd);
1203 free(pathcp, M_TEMP);
1204 NFSEXITCODE2(error, nd);
1209 * Remove a non-directory object.
1212 nfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred,
1213 struct thread *p, struct nfsexstuff *exp)
1215 struct vnode *vp, *dsdvp[NFSDEV_MAXMIRRORS];
1216 int error = 0, mirrorcnt;
1217 char fname[PNFS_FILENAME_LEN + 1];
1222 if (vp->v_type == VDIR)
1223 error = NFSERR_ISDIR;
1225 error = nfsrv_checkremove(vp, 1, p);
1227 nfsrv_pnfsremovesetup(vp, p, dsdvp, &mirrorcnt, fname, &fh);
1229 error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd);
1230 if (error == 0 && dsdvp[0] != NULL)
1231 nfsrv_pnfsremove(dsdvp, mirrorcnt, fname, &fh, p);
1232 if (ndp->ni_dvp == vp)
1237 if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0)
1238 nfsvno_relpathbuf(ndp);
1244 * Remove a directory.
1247 nfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred,
1248 struct thread *p, struct nfsexstuff *exp)
1254 if (vp->v_type != VDIR) {
1259 * No rmdir "." please.
1261 if (ndp->ni_dvp == vp) {
1266 * The root of a mounted filesystem cannot be deleted.
1268 if (vp->v_vflag & VV_ROOT)
1272 error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd);
1273 if (ndp->ni_dvp == vp)
1278 if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0)
1279 nfsvno_relpathbuf(ndp);
1288 nfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp,
1289 u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p)
1291 struct vnode *fvp, *tvp, *tdvp, *dsdvp[NFSDEV_MAXMIRRORS];
1292 int error = 0, mirrorcnt;
1293 char fname[PNFS_FILENAME_LEN + 1];
1297 fvp = fromndp->ni_vp;
1299 vrele(fromndp->ni_dvp);
1304 tdvp = tondp->ni_dvp;
1307 if (fvp->v_type == VDIR && tvp->v_type != VDIR) {
1308 error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST;
1310 } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) {
1311 error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST;
1314 if (tvp->v_type == VDIR && tvp->v_mountedhere) {
1315 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV;
1320 * A rename to '.' or '..' results in a prematurely
1321 * unlocked vnode on FreeBSD5, so I'm just going to fail that
1324 if ((tondp->ni_cnd.cn_namelen == 1 &&
1325 tondp->ni_cnd.cn_nameptr[0] == '.') ||
1326 (tondp->ni_cnd.cn_namelen == 2 &&
1327 tondp->ni_cnd.cn_nameptr[0] == '.' &&
1328 tondp->ni_cnd.cn_nameptr[1] == '.')) {
1333 if (fvp->v_type == VDIR && fvp->v_mountedhere) {
1334 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV;
1337 if (fvp->v_mount != tdvp->v_mount) {
1338 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV;
1342 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL;
1347 * If source and destination are the same, there is nothing to
1348 * do. Set error to -1 to indicate this.
1353 if (ndflag & ND_NFSV4) {
1354 if (NFSVOPLOCK(fvp, LK_EXCLUSIVE) == 0) {
1355 error = nfsrv_checkremove(fvp, 0, p);
1356 NFSVOPUNLOCK(fvp, 0);
1360 error = nfsrv_checkremove(tvp, 1, p);
1363 * For NFSv2 and NFSv3, try to get rid of the delegation, so
1364 * that the NFSv4 client won't be confused by the rename.
1365 * Since nfsd_recalldelegation() can only be called on an
1366 * unlocked vnode at this point and fvp is the file that will
1367 * still exist after the rename, just do fvp.
1369 nfsd_recalldelegation(fvp, p);
1371 if (error == 0 && tvp != NULL) {
1372 nfsrv_pnfsremovesetup(tvp, p, dsdvp, &mirrorcnt, fname, &fh);
1373 NFSD_DEBUG(4, "nfsvno_rename: pnfsremovesetup"
1374 " dsdvp=%p\n", dsdvp[0]);
1378 error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp,
1379 &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp,
1388 vrele(fromndp->ni_dvp);
1395 * If dsdvp[0] != NULL, it was set up by nfsrv_pnfsremovesetup() and
1396 * if the rename succeeded, the DS file for the tvp needs to be
1399 if (error == 0 && dsdvp[0] != NULL) {
1400 nfsrv_pnfsremove(dsdvp, mirrorcnt, fname, &fh, p);
1401 NFSD_DEBUG(4, "nfsvno_rename: pnfsremove\n");
1404 vrele(tondp->ni_startdir);
1405 nfsvno_relpathbuf(tondp);
1407 vrele(fromndp->ni_startdir);
1408 nfsvno_relpathbuf(fromndp);
1417 nfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred,
1418 struct thread *p, struct nfsexstuff *exp)
1428 if (vp->v_mount != xp->v_mount)
1432 NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY);
1433 if ((vp->v_iflag & VI_DOOMED) == 0)
1434 error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd);
1437 if (ndp->ni_dvp == vp)
1441 NFSVOPUNLOCK(vp, 0);
1443 if (ndp->ni_dvp == ndp->ni_vp)
1450 nfsvno_relpathbuf(ndp);
1456 * Do the fsync() appropriate for the commit.
1459 nfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred,
1465 * RFC 1813 3.3.21: if count is 0, a flush from offset to the end of
1466 * file is done. At this time VOP_FSYNC does not accept offset and
1467 * byte count parameters so call VOP_FSYNC the whole file for now.
1468 * The same is true for NFSv4: RFC 3530 Sec. 14.2.3.
1469 * File systems that do not use the buffer cache (as indicated
1470 * by MNTK_USES_BCACHE not being set) must use VOP_FSYNC().
1472 if (cnt == 0 || cnt > MAX_COMMIT_COUNT ||
1473 (vp->v_mount->mnt_kern_flag & MNTK_USES_BCACHE) == 0) {
1475 * Give up and do the whole thing
1478 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
1479 VM_OBJECT_WLOCK(vp->v_object);
1480 vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC);
1481 VM_OBJECT_WUNLOCK(vp->v_object);
1483 error = VOP_FSYNC(vp, MNT_WAIT, td);
1486 * Locate and synchronously write any buffers that fall
1487 * into the requested range. Note: we are assuming that
1488 * f_iosize is a power of 2.
1490 int iosize = vp->v_mount->mnt_stat.f_iosize;
1491 int iomask = iosize - 1;
1496 * Align to iosize boundary, super-align to page boundary.
1499 cnt += off & iomask;
1500 off &= ~(u_quad_t)iomask;
1502 if (off & PAGE_MASK) {
1503 cnt += off & PAGE_MASK;
1504 off &= ~(u_quad_t)PAGE_MASK;
1506 lblkno = off / iosize;
1509 (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
1510 VM_OBJECT_WLOCK(vp->v_object);
1511 vm_object_page_clean(vp->v_object, off, off + cnt,
1513 VM_OBJECT_WUNLOCK(vp->v_object);
1522 * If we have a buffer and it is marked B_DELWRI we
1523 * have to lock and write it. Otherwise the prior
1524 * write is assumed to have already been committed.
1526 * gbincore() can return invalid buffers now so we
1527 * have to check that bit as well (though B_DELWRI
1528 * should not be set if B_INVAL is set there could be
1529 * a race here since we haven't locked the buffer).
1531 if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) {
1532 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL |
1533 LK_INTERLOCK, BO_LOCKPTR(bo)) == ENOLCK) {
1535 continue; /* retry */
1537 if ((bp->b_flags & (B_DELWRI|B_INVAL)) ==
1540 bp->b_flags &= ~B_ASYNC;
1563 nfsvno_statfs(struct vnode *vp, struct statfs *sf)
1569 if (nfsrv_devidcnt > 0) {
1570 /* For a pNFS service, get the DS numbers. */
1571 tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK | M_ZERO);
1572 error = nfsrv_pnfsstatfs(tsf);
1578 error = VFS_STATFS(vp->v_mount, sf);
1581 sf->f_blocks = tsf->f_blocks;
1582 sf->f_bavail = tsf->f_bavail;
1583 sf->f_bfree = tsf->f_bfree;
1584 sf->f_bsize = tsf->f_bsize;
1587 * Since NFS handles these values as unsigned on the
1588 * wire, there is no way to represent negative values,
1589 * so set them to 0. Without this, they will appear
1590 * to be very large positive values for clients like
1593 if (sf->f_bavail < 0)
1595 if (sf->f_ffree < 0)
1604 * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but
1605 * must handle nfsrv_opencheck() calls after any other access checks.
1608 nfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp,
1609 nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp,
1610 int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create,
1611 NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p,
1612 struct nfsexstuff *exp, struct vnode **vpp)
1614 struct vnode *vp = NULL;
1616 struct nfsexstuff nes;
1618 if (ndp->ni_vp == NULL)
1619 nd->nd_repstat = nfsrv_opencheck(clientid,
1620 stateidp, stp, NULL, nd, p, nd->nd_repstat);
1621 if (!nd->nd_repstat) {
1622 if (ndp->ni_vp == NULL) {
1623 vrele(ndp->ni_startdir);
1624 nd->nd_repstat = VOP_CREATE(ndp->ni_dvp,
1625 &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr);
1626 /* For a pNFS server, create the data file on a DS. */
1627 if (nd->nd_repstat == 0) {
1629 * Create a data file on a DS for a pNFS server.
1630 * This function just returns if not
1631 * running a pNFS DS or the creation fails.
1633 nfsrv_pnfscreate(ndp->ni_vp, &nvap->na_vattr,
1637 nfsvno_relpathbuf(ndp);
1638 if (!nd->nd_repstat) {
1639 if (*exclusive_flagp) {
1640 *exclusive_flagp = 0;
1641 NFSVNO_ATTRINIT(nvap);
1642 nvap->na_atime.tv_sec = cverf[0];
1643 nvap->na_atime.tv_nsec = cverf[1];
1644 nd->nd_repstat = VOP_SETATTR(ndp->ni_vp,
1645 &nvap->na_vattr, cred);
1646 if (nd->nd_repstat != 0) {
1649 nd->nd_repstat = NFSERR_NOTSUPP;
1651 NFSSETBIT_ATTRBIT(attrbitp,
1652 NFSATTRBIT_TIMEACCESS);
1654 nfsrv_fixattr(nd, ndp->ni_vp, nvap,
1655 aclp, p, attrbitp, exp);
1660 if (ndp->ni_startdir)
1661 vrele(ndp->ni_startdir);
1662 nfsvno_relpathbuf(ndp);
1664 if (create == NFSV4OPEN_CREATE) {
1665 if (ndp->ni_dvp == vp)
1670 if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) {
1671 if (ndp->ni_cnd.cn_flags & RDONLY)
1672 NFSVNO_SETEXRDONLY(&nes);
1674 NFSVNO_EXINIT(&nes);
1675 nd->nd_repstat = nfsvno_accchk(vp,
1676 VWRITE, cred, &nes, p,
1677 NFSACCCHK_NOOVERRIDE,
1678 NFSACCCHK_VPISLOCKED, NULL);
1679 nd->nd_repstat = nfsrv_opencheck(clientid,
1680 stateidp, stp, vp, nd, p, nd->nd_repstat);
1681 if (!nd->nd_repstat) {
1682 tempsize = nvap->na_size;
1683 NFSVNO_ATTRINIT(nvap);
1684 nvap->na_size = tempsize;
1685 nd->nd_repstat = VOP_SETATTR(vp,
1686 &nvap->na_vattr, cred);
1688 } else if (vp->v_type == VREG) {
1689 nd->nd_repstat = nfsrv_opencheck(clientid,
1690 stateidp, stp, vp, nd, p, nd->nd_repstat);
1694 if (ndp->ni_cnd.cn_flags & HASBUF)
1695 nfsvno_relpathbuf(ndp);
1696 if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) {
1697 vrele(ndp->ni_startdir);
1698 if (ndp->ni_dvp == ndp->ni_vp)
1708 NFSEXITCODE2(0, nd);
1712 * Updates the file rev and sets the mtime and ctime
1713 * to the current clock time, returning the va_filerev and va_Xtime
1715 * Return ESTALE to indicate the vnode is VI_DOOMED.
1718 nfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap,
1719 struct nfsrv_descript *nd, struct thread *p)
1724 vfs_timestamp(&va.va_mtime);
1725 if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) {
1726 NFSVOPLOCK(vp, LK_UPGRADE | LK_RETRY);
1727 if ((vp->v_iflag & VI_DOOMED) != 0)
1730 (void) VOP_SETATTR(vp, &va, nd->nd_cred);
1731 (void) nfsvno_getattr(vp, nvap, nd, p, 1, NULL);
1736 * Glue routine to nfsv4_fillattr().
1739 nfsvno_fillattr(struct nfsrv_descript *nd, struct mount *mp, struct vnode *vp,
1740 struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp,
1741 struct ucred *cred, struct thread *p, int isdgram, int reterr,
1742 int supports_nfsv4acls, int at_root, uint64_t mounted_on_fileno)
1748 if (nfsrv_devidcnt > 0 &&
1749 (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACEAVAIL) ||
1750 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACEFREE) ||
1751 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACETOTAL))) {
1752 sf = malloc(sizeof(*sf), M_TEMP, M_WAITOK | M_ZERO);
1753 error = nfsrv_pnfsstatfs(sf);
1759 error = nfsv4_fillattr(nd, mp, vp, NULL, &nvap->na_vattr, fhp, rderror,
1760 attrbitp, cred, p, isdgram, reterr, supports_nfsv4acls, at_root,
1761 mounted_on_fileno, sf);
1763 NFSEXITCODE2(0, nd);
1767 /* Since the Readdir vnode ops vary, put the entire functions in here. */
1769 * nfs readdir service
1770 * - mallocs what it thinks is enough to read
1771 * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR
1772 * - calls VOP_READDIR()
1773 * - loops around building the reply
1774 * if the output generated exceeds count break out of loop
1775 * The NFSM_CLGET macro is used here so that the reply will be packed
1776 * tightly in mbuf clusters.
1777 * - it trims out records with d_fileno == 0
1778 * this doesn't matter for Unix clients, but they might confuse clients
1780 * - it trims out records with d_type == DT_WHT
1781 * these cannot be seen through NFS (unless we extend the protocol)
1782 * The alternate call nfsrvd_readdirplus() does lookups as well.
1783 * PS: The NFS protocol spec. does not clarify what the "count" byte
1784 * argument is a count of.. just name strings and file id's or the
1785 * entire reply rpc or ...
1786 * I tried just file name and id sizes and it confused the Sun client,
1787 * so I am using the full rpc size now. The "paranoia.." comment refers
1788 * to including the status longwords that are not a part of the dir.
1789 * "entry" structures, but are in the rpc.
1792 nfsrvd_readdir(struct nfsrv_descript *nd, int isdgram,
1793 struct vnode *vp, struct thread *p, struct nfsexstuff *exp)
1798 char *cpos, *cend, *rbuf;
1800 int nlen, error = 0, getret = 1;
1801 int siz, cnt, fullsiz, eofflag, ncookies;
1802 u_int64_t off, toff, verf;
1803 u_long *cookies = NULL, *cookiep;
1808 if (nd->nd_repstat) {
1809 nfsrv_postopattr(nd, getret, &at);
1812 if (nd->nd_flag & ND_NFSV2) {
1813 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1814 off = fxdr_unsigned(u_quad_t, *tl++);
1816 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1817 off = fxdr_hyper(tl);
1819 verf = fxdr_hyper(tl);
1823 cnt = fxdr_unsigned(int, *tl);
1824 if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0)
1825 cnt = NFS_SRVMAXDATA(nd);
1826 siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
1828 if (nd->nd_flag & ND_NFSV3) {
1829 nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd, p, 1,
1833 * va_filerev is not sufficient as a cookie verifier,
1834 * since it is not supposed to change when entries are
1835 * removed/added unless that offset cookies returned to
1836 * the client are no longer valid.
1838 if (!nd->nd_repstat && toff && verf != at.na_filerev)
1839 nd->nd_repstat = NFSERR_BAD_COOKIE;
1842 if (!nd->nd_repstat && vp->v_type != VDIR)
1843 nd->nd_repstat = NFSERR_NOTDIR;
1844 if (nd->nd_repstat == 0 && cnt == 0) {
1845 if (nd->nd_flag & ND_NFSV2)
1846 /* NFSv2 does not have NFSERR_TOOSMALL */
1847 nd->nd_repstat = EPERM;
1849 nd->nd_repstat = NFSERR_TOOSMALL;
1851 if (!nd->nd_repstat)
1852 nd->nd_repstat = nfsvno_accchk(vp, VEXEC,
1853 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE,
1854 NFSACCCHK_VPISLOCKED, NULL);
1855 if (nd->nd_repstat) {
1857 if (nd->nd_flag & ND_NFSV3)
1858 nfsrv_postopattr(nd, getret, &at);
1861 is_ufs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "ufs") == 0;
1862 rbuf = malloc(siz, M_TEMP, M_WAITOK);
1866 free(cookies, M_TEMP);
1874 io.uio_offset = (off_t)off;
1876 io.uio_segflg = UIO_SYSSPACE;
1877 io.uio_rw = UIO_READ;
1879 nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies,
1881 off = (u_int64_t)io.uio_offset;
1883 siz -= io.uio_resid;
1885 if (!cookies && !nd->nd_repstat)
1886 nd->nd_repstat = NFSERR_PERM;
1887 if (nd->nd_flag & ND_NFSV3) {
1888 getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL);
1889 if (!nd->nd_repstat)
1890 nd->nd_repstat = getret;
1894 * Handles the failed cases. nd->nd_repstat == 0 past here.
1896 if (nd->nd_repstat) {
1900 free(cookies, M_TEMP);
1901 if (nd->nd_flag & ND_NFSV3)
1902 nfsrv_postopattr(nd, getret, &at);
1906 * If nothing read, return eof
1911 if (nd->nd_flag & ND_NFSV2) {
1912 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1914 nfsrv_postopattr(nd, getret, &at);
1915 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1916 txdr_hyper(at.na_filerev, tl);
1919 *tl++ = newnfs_false;
1922 free(cookies, M_TEMP);
1927 * Check for degenerate cases of nothing useful read.
1928 * If so go try again
1932 dp = (struct dirent *)cpos;
1936 * For some reason FreeBSD's ufs_readdir() chooses to back the
1937 * directory offset up to a block boundary, so it is necessary to
1938 * skip over the records that precede the requested offset. This
1939 * requires the assumption that file offset cookies monotonically
1942 while (cpos < cend && ncookies > 0 &&
1943 (dp->d_fileno == 0 || dp->d_type == DT_WHT ||
1944 (is_ufs == 1 && ((u_quad_t)(*cookiep)) <= toff))) {
1945 cpos += dp->d_reclen;
1946 dp = (struct dirent *)cpos;
1950 if (cpos >= cend || ncookies == 0) {
1958 * dirlen is the size of the reply, including all XDR and must
1959 * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate
1960 * if the XDR should be included in "count", but to be safe, we do.
1961 * (Include the two booleans at the end of the reply in dirlen now.)
1963 if (nd->nd_flag & ND_NFSV3) {
1964 nfsrv_postopattr(nd, getret, &at);
1965 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1966 txdr_hyper(at.na_filerev, tl);
1967 dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED;
1969 dirlen = 2 * NFSX_UNSIGNED;
1972 /* Loop through the records and build reply */
1973 while (cpos < cend && ncookies > 0) {
1974 nlen = dp->d_namlen;
1975 if (dp->d_fileno != 0 && dp->d_type != DT_WHT &&
1976 nlen <= NFS_MAXNAMLEN) {
1977 if (nd->nd_flag & ND_NFSV3)
1978 dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen));
1980 dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen));
1987 * Build the directory record xdr from
1990 if (nd->nd_flag & ND_NFSV3) {
1991 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
1992 *tl++ = newnfs_true;
1995 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1996 *tl++ = newnfs_true;
1998 *tl = txdr_unsigned(dp->d_fileno);
1999 (void) nfsm_strtom(nd, dp->d_name, nlen);
2000 if (nd->nd_flag & ND_NFSV3) {
2001 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2004 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2005 *tl = txdr_unsigned(*cookiep);
2007 cpos += dp->d_reclen;
2008 dp = (struct dirent *)cpos;
2014 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2015 *tl++ = newnfs_false;
2021 free(cookies, M_TEMP);
2024 NFSEXITCODE2(0, nd);
2028 NFSEXITCODE2(error, nd);
2033 * Readdirplus for V3 and Readdir for V4.
2036 nfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram,
2037 struct vnode *vp, struct thread *p, struct nfsexstuff *exp)
2042 char *cpos, *cend, *rbuf;
2045 struct nfsvattr nva, at, *nvap = &nva;
2046 struct mbuf *mb0, *mb1;
2047 struct nfsreferral *refp;
2048 int nlen, r, error = 0, getret = 1, usevget = 1;
2049 int siz, cnt, fullsiz, eofflag, ncookies, entrycnt;
2050 caddr_t bpos0, bpos1;
2051 u_int64_t off, toff, verf;
2052 u_long *cookies = NULL, *cookiep;
2053 nfsattrbit_t attrbits, rderrbits, savbits;
2056 struct componentname cn;
2057 int at_root, is_ufs, is_zfs, needs_unbusy, supports_nfsv4acls;
2058 struct mount *mp, *new_mp;
2059 uint64_t mounted_on_fileno;
2061 if (nd->nd_repstat) {
2062 nfsrv_postopattr(nd, getret, &at);
2065 NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
2066 off = fxdr_hyper(tl);
2069 verf = fxdr_hyper(tl);
2071 siz = fxdr_unsigned(int, *tl++);
2072 cnt = fxdr_unsigned(int, *tl);
2075 * Use the server's maximum data transfer size as the upper bound
2078 if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0)
2079 cnt = NFS_SRVMAXDATA(nd);
2082 * siz is a "hint" of how much directory information (name, fileid,
2083 * cookie) should be in the reply. At least one client "hints" 0,
2084 * so I set it to cnt for that case. I also round it up to the
2085 * next multiple of DIRBLKSIZ.
2089 siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
2091 if (nd->nd_flag & ND_NFSV4) {
2092 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
2095 NFSSET_ATTRBIT(&savbits, &attrbits);
2096 NFSCLRNOTFILLABLE_ATTRBIT(&attrbits);
2097 NFSZERO_ATTRBIT(&rderrbits);
2098 NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR);
2100 NFSZERO_ATTRBIT(&attrbits);
2103 nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL);
2104 if (!nd->nd_repstat) {
2105 if (off && verf != at.na_filerev) {
2107 * va_filerev is not sufficient as a cookie verifier,
2108 * since it is not supposed to change when entries are
2109 * removed/added unless that offset cookies returned to
2110 * the client are no longer valid.
2113 if (nd->nd_flag & ND_NFSV4) {
2114 nd->nd_repstat = NFSERR_NOTSAME;
2116 nd->nd_repstat = NFSERR_BAD_COOKIE;
2119 } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) {
2120 nd->nd_repstat = NFSERR_BAD_COOKIE;
2123 if (!nd->nd_repstat && vp->v_type != VDIR)
2124 nd->nd_repstat = NFSERR_NOTDIR;
2125 if (!nd->nd_repstat && cnt == 0)
2126 nd->nd_repstat = NFSERR_TOOSMALL;
2127 if (!nd->nd_repstat)
2128 nd->nd_repstat = nfsvno_accchk(vp, VEXEC,
2129 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE,
2130 NFSACCCHK_VPISLOCKED, NULL);
2131 if (nd->nd_repstat) {
2133 if (nd->nd_flag & ND_NFSV3)
2134 nfsrv_postopattr(nd, getret, &at);
2137 is_ufs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "ufs") == 0;
2138 is_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs") == 0;
2140 rbuf = malloc(siz, M_TEMP, M_WAITOK);
2144 free(cookies, M_TEMP);
2152 io.uio_offset = (off_t)off;
2154 io.uio_segflg = UIO_SYSSPACE;
2155 io.uio_rw = UIO_READ;
2157 nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies,
2159 off = (u_int64_t)io.uio_offset;
2161 siz -= io.uio_resid;
2163 getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL);
2165 if (!cookies && !nd->nd_repstat)
2166 nd->nd_repstat = NFSERR_PERM;
2167 if (!nd->nd_repstat)
2168 nd->nd_repstat = getret;
2169 if (nd->nd_repstat) {
2172 free(cookies, M_TEMP);
2174 if (nd->nd_flag & ND_NFSV3)
2175 nfsrv_postopattr(nd, getret, &at);
2179 * If nothing read, return eof
2184 if (nd->nd_flag & ND_NFSV3)
2185 nfsrv_postopattr(nd, getret, &at);
2186 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2187 txdr_hyper(at.na_filerev, tl);
2189 *tl++ = newnfs_false;
2191 free(cookies, M_TEMP);
2197 * Check for degenerate cases of nothing useful read.
2198 * If so go try again
2202 dp = (struct dirent *)cpos;
2206 * For some reason FreeBSD's ufs_readdir() chooses to back the
2207 * directory offset up to a block boundary, so it is necessary to
2208 * skip over the records that precede the requested offset. This
2209 * requires the assumption that file offset cookies monotonically
2212 while (cpos < cend && ncookies > 0 &&
2213 (dp->d_fileno == 0 || dp->d_type == DT_WHT ||
2214 (is_ufs == 1 && ((u_quad_t)(*cookiep)) <= toff) ||
2215 ((nd->nd_flag & ND_NFSV4) &&
2216 ((dp->d_namlen == 1 && dp->d_name[0] == '.') ||
2217 (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) {
2218 cpos += dp->d_reclen;
2219 dp = (struct dirent *)cpos;
2223 if (cpos >= cend || ncookies == 0) {
2230 * Busy the file system so that the mount point won't go away
2231 * and, as such, VFS_VGET() can be used safely.
2235 NFSVOPUNLOCK(vp, 0);
2236 nd->nd_repstat = vfs_busy(mp, 0);
2238 if (nd->nd_repstat != 0) {
2240 free(cookies, M_TEMP);
2242 if (nd->nd_flag & ND_NFSV3)
2243 nfsrv_postopattr(nd, getret, &at);
2248 * Check to see if entries in this directory can be safely acquired
2249 * via VFS_VGET() or if a switch to VOP_LOOKUP() is required.
2250 * ZFS snapshot directories need VOP_LOOKUP(), so that any
2251 * automount of the snapshot directory that is required will
2253 * This needs to be done here for NFSv4, since NFSv4 never does
2254 * a VFS_VGET() for "." or "..".
2257 r = VFS_VGET(mp, at.na_fileid, LK_SHARED, &nvp);
2258 if (r == EOPNOTSUPP) {
2260 cn.cn_nameiop = LOOKUP;
2261 cn.cn_lkflags = LK_SHARED | LK_RETRY;
2262 cn.cn_cred = nd->nd_cred;
2269 * Save this position, in case there is an error before one entry
2273 bpos0 = nd->nd_bpos;
2276 * Fill in the first part of the reply.
2277 * dirlen is the reply length in bytes and cannot exceed cnt.
2278 * (Include the two booleans at the end of the reply in dirlen now,
2279 * so we recognize when we have exceeded cnt.)
2281 if (nd->nd_flag & ND_NFSV3) {
2282 dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED;
2283 nfsrv_postopattr(nd, getret, &at);
2285 dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED;
2287 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
2288 txdr_hyper(at.na_filerev, tl);
2291 * Save this position, in case there is an empty reply needed.
2294 bpos1 = nd->nd_bpos;
2296 /* Loop through the records and build reply */
2298 while (cpos < cend && ncookies > 0 && dirlen < cnt) {
2299 nlen = dp->d_namlen;
2300 if (dp->d_fileno != 0 && dp->d_type != DT_WHT &&
2301 nlen <= NFS_MAXNAMLEN &&
2302 ((nd->nd_flag & ND_NFSV3) || nlen > 2 ||
2303 (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.'))
2304 || (nlen == 1 && dp->d_name[0] != '.'))) {
2306 * Save the current position in the reply, in case
2307 * this entry exceeds cnt.
2310 bpos1 = nd->nd_bpos;
2313 * For readdir_and_lookup get the vnode using
2322 mounted_on_fileno = (uint64_t)dp->d_fileno;
2323 if ((nd->nd_flag & ND_NFSV3) ||
2324 NFSNONZERO_ATTRBIT(&savbits)) {
2325 if (nd->nd_flag & ND_NFSV4)
2326 refp = nfsv4root_getreferral(NULL,
2330 r = VFS_VGET(mp, dp->d_fileno,
2334 if (r == EOPNOTSUPP) {
2337 cn.cn_nameiop = LOOKUP;
2345 cn.cn_nameptr = dp->d_name;
2346 cn.cn_namelen = nlen;
2347 cn.cn_flags = ISLASTCN |
2348 NOFOLLOW | LOCKLEAF;
2350 dp->d_name[0] == '.' &&
2351 dp->d_name[1] == '.')
2354 if (NFSVOPLOCK(vp, LK_SHARED)
2356 nd->nd_repstat = EPERM;
2359 if ((vp->v_vflag & VV_ROOT) != 0
2360 && (cn.cn_flags & ISDOTDOT)
2366 r = VOP_LOOKUP(vp, &nvp,
2375 * For NFSv4, check to see if nvp is
2376 * a mount point and get the mount
2377 * point vnode, as required.
2380 nfsrv_enable_crossmntpt != 0 &&
2381 (nd->nd_flag & ND_NFSV4) != 0 &&
2382 nvp->v_type == VDIR &&
2383 nvp->v_mountedhere != NULL) {
2384 new_mp = nvp->v_mountedhere;
2385 r = vfs_busy(new_mp, 0);
2389 r = VFS_ROOT(new_mp,
2399 ((nd->nd_flag & ND_NFSV3) ||
2400 NFSNONZERO_ATTRBIT(&attrbits))) {
2401 r = nfsvno_getfh(nvp, &nfh, p);
2403 r = nfsvno_getattr(nvp, nvap, nd, p,
2405 if (r == 0 && is_zfs == 1 &&
2406 nfsrv_enable_crossmntpt != 0 &&
2407 (nd->nd_flag & ND_NFSV4) != 0 &&
2408 nvp->v_type == VDIR &&
2409 vp->v_mount != nvp->v_mount) {
2411 * For a ZFS snapshot, there is a
2412 * pseudo mount that does not set
2413 * v_mountedhere, so it needs to
2414 * be detected via a different
2419 new_mp = nvp->v_mount;
2426 if (!NFSISSET_ATTRBIT(&attrbits,
2427 NFSATTRBIT_RDATTRERROR)) {
2430 if (needs_unbusy != 0)
2439 * Build the directory record xdr
2441 if (nd->nd_flag & ND_NFSV3) {
2442 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
2443 *tl++ = newnfs_true;
2445 *tl = txdr_unsigned(dp->d_fileno);
2446 dirlen += nfsm_strtom(nd, dp->d_name, nlen);
2447 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2449 *tl = txdr_unsigned(*cookiep);
2450 nfsrv_postopattr(nd, 0, nvap);
2451 dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1);
2452 dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR);
2456 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
2457 *tl++ = newnfs_true;
2459 *tl = txdr_unsigned(*cookiep);
2460 dirlen += nfsm_strtom(nd, dp->d_name, nlen);
2462 supports_nfsv4acls =
2463 nfs_supportsnfsv4acls(nvp);
2464 NFSVOPUNLOCK(nvp, 0);
2466 supports_nfsv4acls = 0;
2468 dirlen += nfsrv_putreferralattr(nd,
2471 if (nd->nd_repstat) {
2474 if (needs_unbusy != 0)
2479 dirlen += nfsvno_fillattr(nd, new_mp,
2480 nvp, nvap, &nfh, r, &rderrbits,
2481 nd->nd_cred, p, isdgram, 0,
2482 supports_nfsv4acls, at_root,
2485 dirlen += nfsvno_fillattr(nd, new_mp,
2486 nvp, nvap, &nfh, r, &attrbits,
2487 nd->nd_cred, p, isdgram, 0,
2488 supports_nfsv4acls, at_root,
2493 dirlen += (3 * NFSX_UNSIGNED);
2495 if (needs_unbusy != 0)
2500 cpos += dp->d_reclen;
2501 dp = (struct dirent *)cpos;
2509 * If dirlen > cnt, we must strip off the last entry. If that
2510 * results in an empty reply, report NFSERR_TOOSMALL.
2512 if (dirlen > cnt || nd->nd_repstat) {
2513 if (!nd->nd_repstat && entrycnt == 0)
2514 nd->nd_repstat = NFSERR_TOOSMALL;
2515 if (nd->nd_repstat) {
2516 newnfs_trimtrailing(nd, mb0, bpos0);
2517 if (nd->nd_flag & ND_NFSV3)
2518 nfsrv_postopattr(nd, getret, &at);
2520 newnfs_trimtrailing(nd, mb1, bpos1);
2522 } else if (cpos < cend)
2524 if (!nd->nd_repstat) {
2525 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2526 *tl++ = newnfs_false;
2532 free(cookies, M_TEMP);
2536 NFSEXITCODE2(0, nd);
2540 NFSEXITCODE2(error, nd);
2545 * Get the settable attributes out of the mbuf list.
2546 * (Return 0 or EBADRPC)
2549 nfsrv_sattr(struct nfsrv_descript *nd, vnode_t vp, struct nfsvattr *nvap,
2550 nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p)
2553 struct nfsv2_sattr *sp;
2554 int error = 0, toclient = 0;
2556 switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) {
2558 NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
2560 * Some old clients didn't fill in the high order 16bits.
2561 * --> check the low order 2 bytes for 0xffff
2563 if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff)
2564 nvap->na_mode = nfstov_mode(sp->sa_mode);
2565 if (sp->sa_uid != newnfs_xdrneg1)
2566 nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid);
2567 if (sp->sa_gid != newnfs_xdrneg1)
2568 nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid);
2569 if (sp->sa_size != newnfs_xdrneg1)
2570 nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size);
2571 if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) {
2573 fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime);
2575 nvap->na_atime.tv_sec =
2576 fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec);
2577 nvap->na_atime.tv_nsec = 0;
2580 if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1)
2581 fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime);
2584 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2585 if (*tl == newnfs_true) {
2586 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2587 nvap->na_mode = nfstov_mode(*tl);
2589 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2590 if (*tl == newnfs_true) {
2591 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2592 nvap->na_uid = fxdr_unsigned(uid_t, *tl);
2594 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2595 if (*tl == newnfs_true) {
2596 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2597 nvap->na_gid = fxdr_unsigned(gid_t, *tl);
2599 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2600 if (*tl == newnfs_true) {
2601 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2602 nvap->na_size = fxdr_hyper(tl);
2604 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2605 switch (fxdr_unsigned(int, *tl)) {
2606 case NFSV3SATTRTIME_TOCLIENT:
2607 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2608 fxdr_nfsv3time(tl, &nvap->na_atime);
2611 case NFSV3SATTRTIME_TOSERVER:
2612 vfs_timestamp(&nvap->na_atime);
2613 nvap->na_vaflags |= VA_UTIMES_NULL;
2616 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2617 switch (fxdr_unsigned(int, *tl)) {
2618 case NFSV3SATTRTIME_TOCLIENT:
2619 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2620 fxdr_nfsv3time(tl, &nvap->na_mtime);
2621 nvap->na_vaflags &= ~VA_UTIMES_NULL;
2623 case NFSV3SATTRTIME_TOSERVER:
2624 vfs_timestamp(&nvap->na_mtime);
2626 nvap->na_vaflags |= VA_UTIMES_NULL;
2631 error = nfsv4_sattr(nd, vp, nvap, attrbitp, aclp, p);
2634 NFSEXITCODE2(error, nd);
2639 * Handle the setable attributes for V4.
2640 * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise.
2643 nfsv4_sattr(struct nfsrv_descript *nd, vnode_t vp, struct nfsvattr *nvap,
2644 nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p)
2649 int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0;
2651 u_char *cp, namestr[NFSV4_SMALLSTR + 1];
2655 error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup);
2658 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2659 attrsize = fxdr_unsigned(int, *tl);
2662 * Loop around getting the setable attributes. If an unsupported
2663 * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return.
2666 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2667 bitpos = NFSATTRBIT_MAX;
2671 for (; bitpos < NFSATTRBIT_MAX; bitpos++) {
2672 if (attrsum > attrsize) {
2673 error = NFSERR_BADXDR;
2676 if (NFSISSET_ATTRBIT(attrbitp, bitpos))
2678 case NFSATTRBIT_SIZE:
2679 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER);
2680 if (vp != NULL && vp->v_type != VREG) {
2681 error = (vp->v_type == VDIR) ? NFSERR_ISDIR :
2685 nvap->na_size = fxdr_hyper(tl);
2686 attrsum += NFSX_HYPER;
2688 case NFSATTRBIT_ACL:
2689 error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize,
2693 if (aceerr && !nd->nd_repstat)
2694 nd->nd_repstat = aceerr;
2697 case NFSATTRBIT_ARCHIVE:
2698 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2699 if (!nd->nd_repstat)
2700 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2701 attrsum += NFSX_UNSIGNED;
2703 case NFSATTRBIT_HIDDEN:
2704 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2705 if (!nd->nd_repstat)
2706 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2707 attrsum += NFSX_UNSIGNED;
2709 case NFSATTRBIT_MIMETYPE:
2710 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2711 i = fxdr_unsigned(int, *tl);
2712 error = nfsm_advance(nd, NFSM_RNDUP(i), -1);
2715 if (!nd->nd_repstat)
2716 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2717 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i));
2719 case NFSATTRBIT_MODE:
2720 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2721 nvap->na_mode = nfstov_mode(*tl);
2722 attrsum += NFSX_UNSIGNED;
2724 case NFSATTRBIT_OWNER:
2725 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2726 j = fxdr_unsigned(int, *tl);
2728 error = NFSERR_BADXDR;
2731 if (j > NFSV4_SMALLSTR)
2732 cp = malloc(j + 1, M_NFSSTRING, M_WAITOK);
2735 error = nfsrv_mtostr(nd, cp, j);
2737 if (j > NFSV4_SMALLSTR)
2738 free(cp, M_NFSSTRING);
2741 if (!nd->nd_repstat) {
2742 nd->nd_repstat = nfsv4_strtouid(nd, cp, j, &uid,
2744 if (!nd->nd_repstat)
2747 if (j > NFSV4_SMALLSTR)
2748 free(cp, M_NFSSTRING);
2749 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j));
2751 case NFSATTRBIT_OWNERGROUP:
2752 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2753 j = fxdr_unsigned(int, *tl);
2755 error = NFSERR_BADXDR;
2758 if (j > NFSV4_SMALLSTR)
2759 cp = malloc(j + 1, M_NFSSTRING, M_WAITOK);
2762 error = nfsrv_mtostr(nd, cp, j);
2764 if (j > NFSV4_SMALLSTR)
2765 free(cp, M_NFSSTRING);
2768 if (!nd->nd_repstat) {
2769 nd->nd_repstat = nfsv4_strtogid(nd, cp, j, &gid,
2771 if (!nd->nd_repstat)
2774 if (j > NFSV4_SMALLSTR)
2775 free(cp, M_NFSSTRING);
2776 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j));
2778 case NFSATTRBIT_SYSTEM:
2779 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2780 if (!nd->nd_repstat)
2781 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2782 attrsum += NFSX_UNSIGNED;
2784 case NFSATTRBIT_TIMEACCESSSET:
2785 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2786 attrsum += NFSX_UNSIGNED;
2787 if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) {
2788 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
2789 fxdr_nfsv4time(tl, &nvap->na_atime);
2791 attrsum += NFSX_V4TIME;
2793 vfs_timestamp(&nvap->na_atime);
2794 nvap->na_vaflags |= VA_UTIMES_NULL;
2797 case NFSATTRBIT_TIMEBACKUP:
2798 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
2799 if (!nd->nd_repstat)
2800 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2801 attrsum += NFSX_V4TIME;
2803 case NFSATTRBIT_TIMECREATE:
2804 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
2805 if (!nd->nd_repstat)
2806 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2807 attrsum += NFSX_V4TIME;
2809 case NFSATTRBIT_TIMEMODIFYSET:
2810 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2811 attrsum += NFSX_UNSIGNED;
2812 if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) {
2813 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
2814 fxdr_nfsv4time(tl, &nvap->na_mtime);
2815 nvap->na_vaflags &= ~VA_UTIMES_NULL;
2816 attrsum += NFSX_V4TIME;
2818 vfs_timestamp(&nvap->na_mtime);
2820 nvap->na_vaflags |= VA_UTIMES_NULL;
2824 nd->nd_repstat = NFSERR_ATTRNOTSUPP;
2826 * set bitpos so we drop out of the loop.
2828 bitpos = NFSATTRBIT_MAX;
2834 * some clients pad the attrlist, so we need to skip over the
2837 if (attrsum > attrsize) {
2838 error = NFSERR_BADXDR;
2840 attrsize = NFSM_RNDUP(attrsize);
2841 if (attrsum < attrsize)
2842 error = nfsm_advance(nd, attrsize - attrsum, -1);
2845 NFSEXITCODE2(error, nd);
2850 * Check/setup export credentials.
2853 nfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp,
2854 struct ucred *credanon)
2859 * Check/setup credentials.
2861 if (nd->nd_flag & ND_GSS)
2862 exp->nes_exflag &= ~MNT_EXPORTANON;
2865 * Check to see if the operation is allowed for this security flavor.
2866 * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to
2867 * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS.
2868 * Also, allow Secinfo, so that it can acquire the correct flavor(s).
2870 if (nfsvno_testexp(nd, exp) &&
2871 nd->nd_procnum != NFSV4OP_SECINFO &&
2872 nd->nd_procnum != NFSPROC_FSINFO) {
2873 if (nd->nd_flag & ND_NFSV4)
2874 error = NFSERR_WRONGSEC;
2876 error = (NFSERR_AUTHERR | AUTH_TOOWEAK);
2881 * Check to see if the file system is exported V4 only.
2883 if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) {
2884 error = NFSERR_PROGNOTV4;
2889 * Now, map the user credentials.
2890 * (Note that ND_AUTHNONE will only be set for an NFSv3
2891 * Fsinfo RPC. If set for anything else, this code might need
2894 if (NFSVNO_EXPORTED(exp)) {
2895 if (((nd->nd_flag & ND_GSS) == 0 && nd->nd_cred->cr_uid == 0) ||
2896 NFSVNO_EXPORTANON(exp) ||
2897 (nd->nd_flag & ND_AUTHNONE) != 0) {
2898 nd->nd_cred->cr_uid = credanon->cr_uid;
2899 nd->nd_cred->cr_gid = credanon->cr_gid;
2900 crsetgroups(nd->nd_cred, credanon->cr_ngroups,
2901 credanon->cr_groups);
2902 } else if ((nd->nd_flag & ND_GSS) == 0) {
2904 * If using AUTH_SYS, call nfsrv_getgrpscred() to see
2905 * if there is a replacement credential with a group
2906 * list set up by "nfsuserd -manage-gids".
2907 * If there is no replacement, nfsrv_getgrpscred()
2908 * simply returns its argument.
2910 nd->nd_cred = nfsrv_getgrpscred(nd->nd_cred);
2915 NFSEXITCODE2(error, nd);
2923 nfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp,
2924 struct ucred **credp)
2926 int i, error, *secflavors;
2928 error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp,
2929 &exp->nes_numsecflavor, &secflavors);
2931 if (nfs_rootfhset) {
2932 exp->nes_exflag = 0;
2933 exp->nes_numsecflavor = 0;
2937 /* Copy the security flavors. */
2938 for (i = 0; i < exp->nes_numsecflavor; i++)
2939 exp->nes_secflavors[i] = secflavors[i];
2946 * Get a vnode for a file handle and export stuff.
2949 nfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam,
2950 int lktype, struct vnode **vpp, struct nfsexstuff *exp,
2951 struct ucred **credp)
2953 int i, error, *secflavors;
2956 exp->nes_numsecflavor = 0;
2957 error = VFS_FHTOVP(mp, &fhp->fh_fid, lktype, vpp);
2959 /* Make sure the server replies ESTALE to the client. */
2961 if (nam && !error) {
2962 error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp,
2963 &exp->nes_numsecflavor, &secflavors);
2965 if (nfs_rootfhset) {
2966 exp->nes_exflag = 0;
2967 exp->nes_numsecflavor = 0;
2973 /* Copy the security flavors. */
2974 for (i = 0; i < exp->nes_numsecflavor; i++)
2975 exp->nes_secflavors[i] = secflavors[i];
2983 * nfsd_fhtovp() - convert a fh to a vnode ptr
2984 * - look up fsid in mount list (if not found ret error)
2985 * - get vp and export rights by calling nfsvno_fhtovp()
2986 * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon
2988 * - if mpp != NULL, return the mount point so that it can
2989 * be used for vn_finished_write() by the caller
2992 nfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype,
2993 struct vnode **vpp, struct nfsexstuff *exp,
2994 struct mount **mpp, int startwrite, struct thread *p)
2997 struct ucred *credanon;
3000 fhp = (fhandle_t *)nfp->nfsrvfh_data;
3002 * Check for the special case of the nfsv4root_fh.
3004 mp = vfs_busyfs(&fhp->fh_fsid);
3009 nd->nd_repstat = ESTALE;
3014 vn_start_write(NULL, mpp, V_WAIT);
3015 if (lktype == LK_SHARED && !(MNT_SHARED_WRITES(mp)))
3016 lktype = LK_EXCLUSIVE;
3018 nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp,
3023 * For NFSv4 without a pseudo root fs, unexported file handles
3024 * can be returned, so that Lookup works everywhere.
3026 if (!nd->nd_repstat && exp->nes_exflag == 0 &&
3027 !(nd->nd_flag & ND_NFSV4)) {
3029 nd->nd_repstat = EACCES;
3033 * Personally, I've never seen any point in requiring a
3034 * reserved port#, since only in the rare case where the
3035 * clients are all boxes with secure system privileges,
3036 * does it provide any enhanced security, but... some people
3037 * believe it to be useful and keep putting this code back in.
3038 * (There is also some "security checker" out there that
3039 * complains if the nfs server doesn't enforce this.)
3040 * However, note the following:
3041 * RFC3530 (NFSv4) specifies that a reserved port# not be
3043 * RFC2623 recommends that, if a reserved port# is checked for,
3044 * that there be a way to turn that off--> ifdef'd.
3046 #ifdef NFS_REQRSVPORT
3047 if (!nd->nd_repstat) {
3048 struct sockaddr_in *saddr;
3049 struct sockaddr_in6 *saddr6;
3051 saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *);
3052 saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *);
3053 if (!(nd->nd_flag & ND_NFSV4) &&
3054 ((saddr->sin_family == AF_INET &&
3055 ntohs(saddr->sin_port) >= IPPORT_RESERVED) ||
3056 (saddr6->sin6_family == AF_INET6 &&
3057 ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) {
3059 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK);
3062 #endif /* NFS_REQRSVPORT */
3065 * Check/setup credentials.
3067 if (!nd->nd_repstat) {
3068 nd->nd_saveduid = nd->nd_cred->cr_uid;
3069 nd->nd_repstat = nfsd_excred(nd, exp, credanon);
3073 if (credanon != NULL)
3075 if (nd->nd_repstat) {
3077 vn_finished_write(mp);
3084 NFSEXITCODE2(0, nd);
3091 fp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp)
3093 struct filedesc *fdp;
3097 fdp = p->td_proc->p_fd;
3098 if (fd < 0 || fd >= fdp->fd_nfiles ||
3099 (fp = fdp->fd_ofiles[fd].fde_file) == NULL) {
3111 * Called from nfssvc() to update the exports list. Just call
3112 * vfs_export(). This has to be done, since the v4 root fake fs isn't
3113 * in the mount list.
3116 nfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p)
3118 struct nfsex_args *nfsexargp = (struct nfsex_args *)argp;
3120 struct nameidata nd;
3123 error = vfs_export(&nfsv4root_mnt, &nfsexargp->export);
3124 if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0)
3126 else if (error == 0) {
3127 if (nfsexargp->fspec == NULL) {
3132 * If fspec != NULL, this is the v4root path.
3134 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE,
3135 nfsexargp->fspec, p);
3136 if ((error = namei(&nd)) != 0)
3138 error = nfsvno_getfh(nd.ni_vp, &fh, p);
3141 nfs_rootfh.nfsrvfh_len = NFSX_MYFH;
3142 NFSBCOPY((caddr_t)&fh,
3143 nfs_rootfh.nfsrvfh_data,
3144 sizeof (fhandle_t));
3155 * This function needs to test to see if the system is near its limit
3156 * for memory allocation via malloc() or mget() and return True iff
3157 * either of these resources are near their limit.
3158 * XXX (For now, this is just a stub.)
3160 int nfsrv_testmalloclimit = 0;
3162 nfsrv_mallocmget_limit(void)
3164 static int printmesg = 0;
3165 static int testval = 1;
3167 if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) {
3168 if ((printmesg++ % 100) == 0)
3169 printf("nfsd: malloc/mget near limit\n");
3176 * BSD specific initialization of a mount point.
3181 static int inited = 0;
3186 nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED);
3187 TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist);
3188 TAILQ_INIT(&nfsv4root_mnt.mnt_activevnodelist);
3189 nfsv4root_mnt.mnt_export = NULL;
3190 TAILQ_INIT(&nfsv4root_opt);
3191 TAILQ_INIT(&nfsv4root_newopt);
3192 nfsv4root_mnt.mnt_opt = &nfsv4root_opt;
3193 nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt;
3194 nfsv4root_mnt.mnt_nvnodelistsize = 0;
3195 nfsv4root_mnt.mnt_activevnodelistsize = 0;
3199 * Get a vnode for a file handle, without checking exports, etc.
3202 nfsvno_getvp(fhandle_t *fhp)
3208 mp = vfs_busyfs(&fhp->fh_fsid);
3211 error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, &vp);
3219 * Do a local VOP_ADVLOCK().
3222 nfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first,
3223 u_int64_t end, struct thread *td)
3229 if (nfsrv_dolocallocks == 0)
3231 ASSERT_VOP_UNLOCKED(vp, "nfsvno_advlock: vp locked");
3233 fl.l_whence = SEEK_SET;
3235 fl.l_start = (off_t)first;
3236 if (end == NFS64BITSSET) {
3240 fl.l_len = (off_t)tlen;
3243 * For FreeBSD8, the l_pid and l_sysid must be set to the same
3244 * values for all calls, so that all locks will be held by the
3245 * nfsd server. (The nfsd server handles conflicts between the
3247 * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024
3248 * bytes, so it can't be put in l_sysid.
3250 if (nfsv4_sysid == 0)
3251 nfsv4_sysid = nlm_acquire_next_sysid();
3252 fl.l_pid = (pid_t)0;
3253 fl.l_sysid = (int)nfsv4_sysid;
3255 if (ftype == F_UNLCK)
3256 error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl,
3257 (F_POSIX | F_REMOTE));
3259 error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl,
3260 (F_POSIX | F_REMOTE));
3268 * Check the nfsv4 root exports.
3271 nfsvno_v4rootexport(struct nfsrv_descript *nd)
3273 struct ucred *credanon;
3274 int exflags, error = 0, numsecflavor, *secflavors, i;
3276 error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags,
3277 &credanon, &numsecflavor, &secflavors);
3279 error = NFSERR_PROGUNAVAIL;
3282 if (credanon != NULL)
3284 for (i = 0; i < numsecflavor; i++) {
3285 if (secflavors[i] == AUTH_SYS)
3286 nd->nd_flag |= ND_EXAUTHSYS;
3287 else if (secflavors[i] == RPCSEC_GSS_KRB5)
3288 nd->nd_flag |= ND_EXGSS;
3289 else if (secflavors[i] == RPCSEC_GSS_KRB5I)
3290 nd->nd_flag |= ND_EXGSSINTEGRITY;
3291 else if (secflavors[i] == RPCSEC_GSS_KRB5P)
3292 nd->nd_flag |= ND_EXGSSPRIVACY;
3301 * Nfs server pseudo system call for the nfsd's
3307 nfssvc_nfsd(struct thread *td, struct nfssvc_args *uap)
3310 struct nfsd_addsock_args sockarg;
3311 struct nfsd_nfsd_args nfsdarg;
3312 struct nfsd_nfsd_oargs onfsdarg;
3313 struct nfsd_pnfsd_args pnfsdarg;
3314 struct vnode *vp, *nvp, *curdvp;
3315 struct pnfsdsfile *pf;
3316 struct nfsdevice *ds, *fds;
3317 cap_rights_t rights;
3318 int buflen, error, ret;
3319 char *buf, *cp, *cp2, *cp3;
3320 char fname[PNFS_FILENAME_LEN + 1];
3322 if (uap->flag & NFSSVC_NFSDADDSOCK) {
3323 error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg));
3327 * Since we don't know what rights might be required,
3328 * pretend that we need them all. It is better to be too
3329 * careful than too reckless.
3331 error = fget(td, sockarg.sock,
3332 cap_rights_init(&rights, CAP_SOCK_SERVER), &fp);
3335 if (fp->f_type != DTYPE_SOCKET) {
3340 error = nfsrvd_addsock(fp);
3342 } else if (uap->flag & NFSSVC_NFSDNFSD) {
3343 if (uap->argp == NULL) {
3347 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) {
3348 error = copyin(uap->argp, &onfsdarg, sizeof(onfsdarg));
3350 nfsdarg.principal = onfsdarg.principal;
3351 nfsdarg.minthreads = onfsdarg.minthreads;
3352 nfsdarg.maxthreads = onfsdarg.maxthreads;
3353 nfsdarg.version = 1;
3354 nfsdarg.addr = NULL;
3355 nfsdarg.addrlen = 0;
3356 nfsdarg.dnshost = NULL;
3357 nfsdarg.dnshostlen = 0;
3358 nfsdarg.dspath = NULL;
3359 nfsdarg.dspathlen = 0;
3360 nfsdarg.mdspath = NULL;
3361 nfsdarg.mdspathlen = 0;
3362 nfsdarg.mirrorcnt = 1;
3365 error = copyin(uap->argp, &nfsdarg, sizeof(nfsdarg));
3368 if (nfsdarg.addrlen > 0 && nfsdarg.addrlen < 10000 &&
3369 nfsdarg.dnshostlen > 0 && nfsdarg.dnshostlen < 10000 &&
3370 nfsdarg.dspathlen > 0 && nfsdarg.dspathlen < 10000 &&
3371 nfsdarg.mdspathlen > 0 && nfsdarg.mdspathlen < 10000 &&
3372 nfsdarg.mirrorcnt >= 1 &&
3373 nfsdarg.mirrorcnt <= NFSDEV_MAXMIRRORS &&
3374 nfsdarg.addr != NULL && nfsdarg.dnshost != NULL &&
3375 nfsdarg.dspath != NULL && nfsdarg.mdspath != NULL) {
3376 NFSD_DEBUG(1, "addrlen=%d dspathlen=%d dnslen=%d"
3377 " mdspathlen=%d mirrorcnt=%d\n", nfsdarg.addrlen,
3378 nfsdarg.dspathlen, nfsdarg.dnshostlen,
3379 nfsdarg.mdspathlen, nfsdarg.mirrorcnt);
3380 cp = malloc(nfsdarg.addrlen + 1, M_TEMP, M_WAITOK);
3381 error = copyin(nfsdarg.addr, cp, nfsdarg.addrlen);
3386 cp[nfsdarg.addrlen] = '\0'; /* Ensure nul term. */
3388 cp = malloc(nfsdarg.dnshostlen + 1, M_TEMP, M_WAITOK);
3389 error = copyin(nfsdarg.dnshost, cp, nfsdarg.dnshostlen);
3391 free(nfsdarg.addr, M_TEMP);
3395 cp[nfsdarg.dnshostlen] = '\0'; /* Ensure nul term. */
3396 nfsdarg.dnshost = cp;
3397 cp = malloc(nfsdarg.dspathlen + 1, M_TEMP, M_WAITOK);
3398 error = copyin(nfsdarg.dspath, cp, nfsdarg.dspathlen);
3400 free(nfsdarg.addr, M_TEMP);
3401 free(nfsdarg.dnshost, M_TEMP);
3405 cp[nfsdarg.dspathlen] = '\0'; /* Ensure nul term. */
3406 nfsdarg.dspath = cp;
3407 cp = malloc(nfsdarg.mdspathlen + 1, M_TEMP, M_WAITOK);
3408 error = copyin(nfsdarg.mdspath, cp, nfsdarg.mdspathlen);
3410 free(nfsdarg.addr, M_TEMP);
3411 free(nfsdarg.dnshost, M_TEMP);
3412 free(nfsdarg.dspath, M_TEMP);
3416 cp[nfsdarg.mdspathlen] = '\0'; /* Ensure nul term. */
3417 nfsdarg.mdspath = cp;
3419 nfsdarg.addr = NULL;
3420 nfsdarg.addrlen = 0;
3421 nfsdarg.dnshost = NULL;
3422 nfsdarg.dnshostlen = 0;
3423 nfsdarg.dspath = NULL;
3424 nfsdarg.dspathlen = 0;
3425 nfsdarg.mdspath = NULL;
3426 nfsdarg.mdspathlen = 0;
3427 nfsdarg.mirrorcnt = 1;
3429 error = nfsrvd_nfsd(td, &nfsdarg);
3430 free(nfsdarg.addr, M_TEMP);
3431 free(nfsdarg.dnshost, M_TEMP);
3432 free(nfsdarg.dspath, M_TEMP);
3433 free(nfsdarg.mdspath, M_TEMP);
3434 } else if (uap->flag & NFSSVC_PNFSDS) {
3435 error = copyin(uap->argp, &pnfsdarg, sizeof(pnfsdarg));
3436 if (error == 0 && pnfsdarg.op == PNFSDOP_DELDSSERVER) {
3437 cp = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK);
3438 error = copyinstr(pnfsdarg.dspath, cp, PATH_MAX + 1,
3441 error = nfsrv_deldsserver(cp, td);
3443 } else if (error == 0 && pnfsdarg.op == PNFSDOP_COPYMR) {
3444 cp = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK);
3445 buflen = sizeof(*pf) * NFSDEV_MAXMIRRORS;
3446 buf = malloc(buflen, M_TEMP, M_WAITOK);
3447 error = copyinstr(pnfsdarg.mdspath, cp, PATH_MAX + 1,
3449 NFSD_DEBUG(4, "pnfsdcopymr cp mdspath=%d\n", error);
3450 if (error == 0 && pnfsdarg.dspath != NULL) {
3451 cp2 = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK);
3452 error = copyinstr(pnfsdarg.dspath, cp2,
3453 PATH_MAX + 1, NULL);
3454 NFSD_DEBUG(4, "pnfsdcopymr cp dspath=%d\n",
3458 if (error == 0 && pnfsdarg.curdspath != NULL) {
3459 cp3 = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK);
3460 error = copyinstr(pnfsdarg.curdspath, cp3,
3461 PATH_MAX + 1, NULL);
3462 NFSD_DEBUG(4, "pnfsdcopymr cp curdspath=%d\n",
3469 error = nfsrv_mdscopymr(cp, cp2, cp3, buf,
3470 &buflen, fname, td, &vp, &nvp, &pf, &ds,
3472 NFSD_DEBUG(4, "nfsrv_mdscopymr=%d\n", error);
3474 if (pf->dsf_dir >= nfsrv_dsdirsize) {
3475 printf("copymr: dsdir out of range\n");
3478 NFSD_DEBUG(4, "copymr: buflen=%d\n", buflen);
3479 error = nfsrv_copymr(vp, nvp,
3480 ds->nfsdev_dsdir[pf->dsf_dir], ds, pf,
3481 (struct pnfsdsfile *)buf,
3482 buflen / sizeof(*pf), td->td_ucred, td);
3485 if (fds != NULL && error == 0) {
3486 curdvp = fds->nfsdev_dsdir[pf->dsf_dir];
3487 ret = vn_lock(curdvp, LK_EXCLUSIVE);
3489 nfsrv_dsremove(curdvp, fname,
3491 NFSVOPUNLOCK(curdvp, 0);
3494 NFSD_DEBUG(4, "nfsrv_copymr=%d\n", error);
3502 error = nfssvc_srvcall(td, uap, td->td_ucred);
3511 nfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred)
3513 struct nfsex_args export;
3514 struct file *fp = NULL;
3516 struct nfsd_clid adminrevoke;
3517 struct nfsd_dumplist dumplist;
3518 struct nfsd_dumpclients *dumpclients;
3519 struct nfsd_dumplocklist dumplocklist;
3520 struct nfsd_dumplocks *dumplocks;
3521 struct nameidata nd;
3523 int error = EINVAL, igotlock;
3525 static int suspend_nfsd = 0;
3527 if (uap->flag & NFSSVC_PUBLICFH) {
3528 NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data,
3529 sizeof (fhandle_t));
3530 error = copyin(uap->argp,
3531 &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t));
3534 } else if (uap->flag & NFSSVC_V4ROOTEXPORT) {
3535 error = copyin(uap->argp,(caddr_t)&export,
3536 sizeof (struct nfsex_args));
3538 error = nfsrv_v4rootexport(&export, cred, p);
3539 } else if (uap->flag & NFSSVC_NOPUBLICFH) {
3542 } else if (uap->flag & NFSSVC_STABLERESTART) {
3543 error = copyin(uap->argp, (caddr_t)&stablefd,
3546 error = fp_getfvp(p, stablefd, &fp, &vp);
3547 if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE))
3549 if (!error && newnfs_numnfsd != 0)
3552 nfsrv_stablefirst.nsf_fp = fp;
3553 nfsrv_setupstable(p);
3555 } else if (uap->flag & NFSSVC_ADMINREVOKE) {
3556 error = copyin(uap->argp, (caddr_t)&adminrevoke,
3557 sizeof (struct nfsd_clid));
3559 error = nfsrv_adminrevoke(&adminrevoke, p);
3560 } else if (uap->flag & NFSSVC_DUMPCLIENTS) {
3561 error = copyin(uap->argp, (caddr_t)&dumplist,
3562 sizeof (struct nfsd_dumplist));
3563 if (!error && (dumplist.ndl_size < 1 ||
3564 dumplist.ndl_size > NFSRV_MAXDUMPLIST))
3567 len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size;
3568 dumpclients = (struct nfsd_dumpclients *)malloc(len,
3570 nfsrv_dumpclients(dumpclients, dumplist.ndl_size);
3571 error = copyout(dumpclients,
3572 CAST_USER_ADDR_T(dumplist.ndl_list), len);
3573 free(dumpclients, M_TEMP);
3575 } else if (uap->flag & NFSSVC_DUMPLOCKS) {
3576 error = copyin(uap->argp, (caddr_t)&dumplocklist,
3577 sizeof (struct nfsd_dumplocklist));
3578 if (!error && (dumplocklist.ndllck_size < 1 ||
3579 dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST))
3582 error = nfsrv_lookupfilename(&nd,
3583 dumplocklist.ndllck_fname, p);
3585 len = sizeof (struct nfsd_dumplocks) *
3586 dumplocklist.ndllck_size;
3587 dumplocks = (struct nfsd_dumplocks *)malloc(len,
3589 nfsrv_dumplocks(nd.ni_vp, dumplocks,
3590 dumplocklist.ndllck_size, p);
3592 error = copyout(dumplocks,
3593 CAST_USER_ADDR_T(dumplocklist.ndllck_list), len);
3594 free(dumplocks, M_TEMP);
3596 } else if (uap->flag & NFSSVC_BACKUPSTABLE) {
3599 nfsd_master_pid = procp->p_pid;
3600 bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1);
3601 nfsd_master_start = procp->p_stats->p_start;
3602 nfsd_master_proc = procp;
3604 } else if ((uap->flag & NFSSVC_SUSPENDNFSD) != 0) {
3605 NFSLOCKV4ROOTMUTEX();
3606 if (suspend_nfsd == 0) {
3607 /* Lock out all nfsd threads */
3609 igotlock = nfsv4_lock(&nfsd_suspend_lock, 1,
3610 NULL, NFSV4ROOTLOCKMUTEXPTR, NULL);
3611 } while (igotlock == 0 && suspend_nfsd == 0);
3614 NFSUNLOCKV4ROOTMUTEX();
3616 } else if ((uap->flag & NFSSVC_RESUMENFSD) != 0) {
3617 NFSLOCKV4ROOTMUTEX();
3618 if (suspend_nfsd != 0) {
3619 nfsv4_unlock(&nfsd_suspend_lock, 0);
3622 NFSUNLOCKV4ROOTMUTEX();
3632 * Returns 0 if ok, 1 otherwise.
3635 nfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp)
3640 * This seems odd, but allow the case where the security flavor
3641 * list is empty. This happens when NFSv4 is traversing non-exported
3642 * file systems. Exported file systems should always have a non-empty
3643 * security flavor list.
3645 if (exp->nes_numsecflavor == 0)
3648 for (i = 0; i < exp->nes_numsecflavor; i++) {
3650 * The tests for privacy and integrity must be first,
3651 * since ND_GSS is set for everything but AUTH_SYS.
3653 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P &&
3654 (nd->nd_flag & ND_GSSPRIVACY))
3656 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I &&
3657 (nd->nd_flag & ND_GSSINTEGRITY))
3659 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 &&
3660 (nd->nd_flag & ND_GSS))
3662 if (exp->nes_secflavors[i] == AUTH_SYS &&
3663 (nd->nd_flag & ND_GSS) == 0)
3670 * Calculate a hash value for the fid in a file handle.
3673 nfsrv_hashfh(fhandle_t *fhp)
3677 hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0);
3682 * Calculate a hash value for the sessionid.
3685 nfsrv_hashsessionid(uint8_t *sessionid)
3689 hashval = hash32_buf(sessionid, NFSX_V4SESSIONID, 0);
3694 * Signal the userland master nfsd to backup the stable restart file.
3697 nfsrv_backupstable(void)
3701 if (nfsd_master_proc != NULL) {
3702 procp = pfind(nfsd_master_pid);
3703 /* Try to make sure it is the correct process. */
3704 if (procp == nfsd_master_proc &&
3705 procp->p_stats->p_start.tv_sec ==
3706 nfsd_master_start.tv_sec &&
3707 procp->p_stats->p_start.tv_usec ==
3708 nfsd_master_start.tv_usec &&
3709 strcmp(procp->p_comm, nfsd_master_comm) == 0)
3710 kern_psignal(procp, SIGUSR2);
3712 nfsd_master_proc = NULL;
3720 * Create a DS data file for nfsrv_pnfscreate(). Called for each mirror.
3721 * The arguments are in a structure, so that they can be passed through
3722 * taskqueue for a kernel process to execute this function.
3724 struct nfsrvdscreate {
3728 struct ucred *tcred;
3731 struct pnfsdsfile *pf;
3735 struct vattr createva;
3739 nfsrv_dscreate(struct vnode *dvp, struct vattr *vap, struct vattr *nvap,
3740 fhandle_t *fhp, struct pnfsdsfile *pf, struct pnfsdsattr *dsa,
3741 char *fnamep, struct ucred *tcred, NFSPROC_T *p, struct vnode **nvpp)
3744 struct nameidata named;
3749 struct nfsmount *nmp;
3752 NFSNAMEICNDSET(&named.ni_cnd, tcred, CREATE,
3753 LOCKPARENT | LOCKLEAF | SAVESTART | NOCACHE);
3754 nfsvno_setpathbuf(&named, &bufp, &hashp);
3755 named.ni_cnd.cn_lkflags = LK_EXCLUSIVE;
3756 named.ni_cnd.cn_thread = p;
3757 named.ni_cnd.cn_nameptr = bufp;
3758 if (fnamep != NULL) {
3759 strlcpy(bufp, fnamep, PNFS_FILENAME_LEN + 1);
3760 named.ni_cnd.cn_namelen = strlen(bufp);
3762 named.ni_cnd.cn_namelen = nfsrv_putfhname(fhp, bufp);
3763 NFSD_DEBUG(4, "nfsrv_dscreate: dvp=%p fname=%s\n", dvp, bufp);
3765 /* Create the date file in the DS mount. */
3766 error = NFSVOPLOCK(dvp, LK_EXCLUSIVE);
3768 error = VOP_CREATE(dvp, &nvp, &named.ni_cnd, vap);
3769 NFSVOPUNLOCK(dvp, 0);
3771 /* Set the ownership of the file. */
3772 error = VOP_SETATTR(nvp, nvap, tcred);
3773 NFSD_DEBUG(4, "nfsrv_dscreate:"
3774 " setattr-uid=%d\n", error);
3779 printf("pNFS: pnfscreate failed=%d\n", error);
3781 printf("pNFS: pnfscreate vnlock=%d\n", error);
3784 nmp = VFSTONFS(nvp->v_mount);
3785 if (strcmp(nvp->v_mount->mnt_vfc->vfc_name, "nfs")
3786 != 0 || nmp->nm_nam->sa_len > sizeof(
3787 struct sockaddr_in6) ||
3788 np->n_fhp->nfh_len != NFSX_MYFH) {
3789 printf("Bad DS file: fstype=%s salen=%d"
3791 nvp->v_mount->mnt_vfc->vfc_name,
3792 nmp->nm_nam->sa_len, np->n_fhp->nfh_len);
3796 /* Set extattrs for the DS on the MDS file. */
3799 error = VOP_GETATTR(nvp, &va, tcred);
3801 dsa->dsa_filerev = va.va_filerev;
3802 dsa->dsa_size = va.va_size;
3803 dsa->dsa_atime = va.va_atime;
3804 dsa->dsa_mtime = va.va_mtime;
3808 NFSBCOPY(np->n_fhp->nfh_fh, &pf->dsf_fh,
3810 NFSBCOPY(nmp->nm_nam, &pf->dsf_sin,
3811 nmp->nm_nam->sa_len);
3812 NFSBCOPY(named.ni_cnd.cn_nameptr,
3814 sizeof(pf->dsf_filename));
3817 printf("pNFS: pnfscreate can't get DS"
3818 " attr=%d\n", error);
3819 if (nvpp != NULL && error == 0)
3824 nfsvno_relpathbuf(&named);
3829 * Start up the thread that will execute nfsrv_dscreate().
3832 start_dscreate(void *arg, int pending)
3834 struct nfsrvdscreate *dsc;
3836 dsc = (struct nfsrvdscreate *)arg;
3837 dsc->err = nfsrv_dscreate(dsc->dvp, &dsc->createva, &dsc->va, &dsc->fh,
3838 dsc->pf, NULL, NULL, dsc->tcred, dsc->p, NULL);
3840 NFSD_DEBUG(4, "start_dscreate: err=%d\n", dsc->err);
3844 * Create a pNFS data file on the Data Server(s).
3847 nfsrv_pnfscreate(struct vnode *vp, struct vattr *vap, struct ucred *cred,
3850 struct nfsrvdscreate *dsc, *tdsc;
3851 struct nfsdevice *ds, *mds;
3853 struct pnfsdsfile *pf, *tpf;
3854 struct pnfsdsattr dsattr;
3856 struct vnode *dvp[NFSDEV_MAXMIRRORS];
3857 struct nfsmount *nmp;
3862 struct ucred *tcred;
3863 int dsdir[NFSDEV_MAXMIRRORS], error, i, mirrorcnt, ret;
3866 /* Get a DS server directory in a round-robin order. */
3870 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) {
3871 if (ds->nfsdev_nmp != NULL && (ds->nfsdev_mdsisset == 0 ||
3872 (mp->mnt_stat.f_fsid.val[0] == ds->nfsdev_mdsfsid.val[0] &&
3873 mp->mnt_stat.f_fsid.val[1] == ds->nfsdev_mdsfsid.val[1])))
3878 NFSD_DEBUG(4, "nfsrv_pnfscreate: no srv\n");
3881 i = dsdir[0] = ds->nfsdev_nextdir;
3882 ds->nfsdev_nextdir = (ds->nfsdev_nextdir + 1) % nfsrv_dsdirsize;
3883 dvp[0] = ds->nfsdev_dsdir[i];
3884 mds = TAILQ_NEXT(ds, nfsdev_list);
3885 if (nfsrv_maxpnfsmirror > 1 && mds != NULL) {
3886 TAILQ_FOREACH_FROM(mds, &nfsrv_devidhead, nfsdev_list) {
3887 if (mds->nfsdev_nmp != NULL &&
3888 (mds->nfsdev_mdsisset == 0 ||
3889 (mp->mnt_stat.f_fsid.val[0] ==
3890 mds->nfsdev_mdsfsid.val[0] &&
3891 mp->mnt_stat.f_fsid.val[1] ==
3892 mds->nfsdev_mdsfsid.val[1]))) {
3893 dsdir[mirrorcnt] = i;
3894 dvp[mirrorcnt] = mds->nfsdev_dsdir[i];
3896 if (mirrorcnt >= nfsrv_maxpnfsmirror)
3901 /* Put at end of list to implement round-robin usage. */
3902 TAILQ_REMOVE(&nfsrv_devidhead, ds, nfsdev_list);
3903 TAILQ_INSERT_TAIL(&nfsrv_devidhead, ds, nfsdev_list);
3907 tdsc = dsc = malloc(sizeof(*dsc) * (mirrorcnt - 1), M_TEMP,
3909 tpf = pf = malloc(sizeof(*pf) * nfsrv_maxpnfsmirror, M_TEMP, M_WAITOK |
3912 error = nfsvno_getfh(vp, &fh, p);
3914 error = VOP_GETATTR(vp, &va, cred);
3916 /* Set the attributes for "vp" to Setattr the DS vp. */
3919 vamode = va.va_mode;
3923 va.va_mode = vamode;
3926 printf("pNFS: pnfscreate getfh+attr=%d\n", error);
3928 NFSD_DEBUG(4, "nfsrv_pnfscreate: cruid=%d crgid=%d\n", cred->cr_uid,
3930 /* Make data file name based on FH. */
3931 tcred = newnfs_getcred();
3934 * Create the file on each DS mirror, using kernel process(es) for the
3935 * additional mirrors.
3938 for (i = 0; i < mirrorcnt - 1 && error == 0; i++, tpf++, tdsc++) {
3939 tpf->dsf_dir = dsdir[i];
3940 tdsc->tcred = tcred;
3943 tdsc->createva = *vap;
3951 if (nfs_pnfsiothreads != 0) {
3952 ret = nfs_pnfsio(start_dscreate, tdsc);
3953 NFSD_DEBUG(4, "nfsrv_pnfscreate: nfs_pnfsio=%d\n", ret);
3956 ret = nfsrv_dscreate(dvp[i], vap, &va, &fh, tpf, NULL,
3957 NULL, tcred, p, NULL);
3959 KASSERT(error == 0, ("nfsrv_dscreate err=%d",
3961 if (failpos == -1 && nfsds_failerr(ret))
3969 tpf->dsf_dir = dsdir[mirrorcnt - 1];
3970 error = nfsrv_dscreate(dvp[mirrorcnt - 1], vap, &va, &fh, tpf,
3971 &dsattr, NULL, tcred, p, NULL);
3972 if (failpos == -1 && mirrorcnt > 1 && nfsds_failerr(error)) {
3973 failpos = mirrorcnt - 1;
3977 timo = hz / 50; /* Wait for 20msec. */
3980 /* Wait for kernel task(s) to complete. */
3981 for (tdsc = dsc, i = 0; i < mirrorcnt - 1; i++, tdsc++) {
3982 while (tdsc->inprog != 0 && tdsc->done == 0)
3983 tsleep(&tdsc->tsk, PVFS, "srvdcr", timo);
3984 if (tdsc->err != 0) {
3985 if (failpos == -1 && nfsds_failerr(tdsc->err))
3987 else if (error == 0)
3993 * If failpos has been set, that mirror has failed, so it needs
3997 nmp = VFSTONFS(dvp[failpos]->v_mount);
3999 if ((nmp->nm_privflag & (NFSMNTP_FORCEDISM |
4000 NFSMNTP_CANCELRPCS)) == 0) {
4001 nmp->nm_privflag |= NFSMNTP_CANCELRPCS;
4003 ds = nfsrv_deldsnmp(nmp, p);
4004 NFSD_DEBUG(4, "dscreatfail fail=%d ds=%p\n", failpos,
4007 nfsrv_killrpcs(nmp);
4009 nmp->nm_privflag &= ~NFSMNTP_CANCELRPCS;
4017 ASSERT_VOP_ELOCKED(vp, "nfsrv_pnfscreate vp");
4019 NFSD_DEBUG(4, "nfsrv_pnfscreate: mirrorcnt=%d maxmirror=%d\n",
4020 mirrorcnt, nfsrv_maxpnfsmirror);
4022 * For all mirrors that couldn't be created, fill in the
4023 * *pf structure, but with an IP address == 0.0.0.0.
4025 tpf = pf + mirrorcnt;
4026 for (i = mirrorcnt; i < nfsrv_maxpnfsmirror; i++, tpf++) {
4028 tpf->dsf_sin.sin_family = AF_INET;
4029 tpf->dsf_sin.sin_len = sizeof(struct sockaddr_in);
4030 tpf->dsf_sin.sin_addr.s_addr = 0;
4031 tpf->dsf_sin.sin_port = 0;
4034 error = vn_start_write(vp, &mp, V_WAIT);
4036 error = vn_extattr_set(vp, IO_NODELOCKED,
4037 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsfile",
4038 sizeof(*pf) * nfsrv_maxpnfsmirror, (char *)pf, p);
4040 error = vn_extattr_set(vp, IO_NODELOCKED,
4041 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsattr",
4042 sizeof(dsattr), (char *)&dsattr, p);
4043 vn_finished_write(mp);
4045 printf("pNFS: pnfscreate setextattr=%d\n",
4048 printf("pNFS: pnfscreate startwrite=%d\n", error);
4050 printf("pNFS: pnfscreate=%d\n", error);
4056 * Get the information needed to remove the pNFS Data Server file from the
4057 * Metadata file. Upon success, ddvp is set non-NULL to the locked
4058 * DS directory vnode. The caller must unlock *ddvp when done with it.
4061 nfsrv_pnfsremovesetup(struct vnode *vp, NFSPROC_T *p, struct vnode **dvpp,
4062 int *mirrorcntp, char *fname, fhandle_t *fhp)
4065 struct ucred *tcred;
4070 /* If not an exported regular file or not a pNFS server, just return. */
4071 if (vp->v_type != VREG || (vp->v_mount->mnt_flag & MNT_EXPORTED) == 0 ||
4072 nfsrv_devidcnt == 0)
4075 /* Check to see if this is the last hard link. */
4076 tcred = newnfs_getcred();
4077 error = VOP_GETATTR(vp, &va, tcred);
4080 printf("pNFS: nfsrv_pnfsremovesetup getattr=%d\n", error);
4083 if (va.va_nlink > 1)
4086 error = nfsvno_getfh(vp, fhp, p);
4088 printf("pNFS: nfsrv_pnfsremovesetup getfh=%d\n", error);
4093 buf = malloc(buflen, M_TEMP, M_WAITOK);
4094 /* Get the directory vnode for the DS mount and the file handle. */
4095 error = nfsrv_dsgetsockmnt(vp, 0, buf, &buflen, mirrorcntp, p, dvpp,
4096 NULL, NULL, fname, NULL, NULL, NULL, NULL, NULL);
4099 printf("pNFS: nfsrv_pnfsremovesetup getsockmnt=%d\n", error);
4103 * Remove a DS data file for nfsrv_pnfsremove(). Called for each mirror.
4104 * The arguments are in a structure, so that they can be passed through
4105 * taskqueue for a kernel process to execute this function.
4107 struct nfsrvdsremove {
4111 struct ucred *tcred;
4115 char fname[PNFS_FILENAME_LEN + 1];
4119 nfsrv_dsremove(struct vnode *dvp, char *fname, struct ucred *tcred,
4122 struct nameidata named;
4128 error = NFSVOPLOCK(dvp, LK_EXCLUSIVE);
4131 named.ni_cnd.cn_nameiop = DELETE;
4132 named.ni_cnd.cn_lkflags = LK_EXCLUSIVE | LK_RETRY;
4133 named.ni_cnd.cn_cred = tcred;
4134 named.ni_cnd.cn_thread = p;
4135 named.ni_cnd.cn_flags = ISLASTCN | LOCKPARENT | LOCKLEAF | SAVENAME;
4136 nfsvno_setpathbuf(&named, &bufp, &hashp);
4137 named.ni_cnd.cn_nameptr = bufp;
4138 named.ni_cnd.cn_namelen = strlen(fname);
4139 strlcpy(bufp, fname, NAME_MAX);
4140 NFSD_DEBUG(4, "nfsrv_pnfsremove: filename=%s\n", bufp);
4141 error = VOP_LOOKUP(dvp, &nvp, &named.ni_cnd);
4142 NFSD_DEBUG(4, "nfsrv_pnfsremove: aft LOOKUP=%d\n", error);
4144 error = VOP_REMOVE(dvp, nvp, &named.ni_cnd);
4147 NFSVOPUNLOCK(dvp, 0);
4148 nfsvno_relpathbuf(&named);
4150 printf("pNFS: nfsrv_pnfsremove failed=%d\n", error);
4155 * Start up the thread that will execute nfsrv_dsremove().
4158 start_dsremove(void *arg, int pending)
4160 struct nfsrvdsremove *dsrm;
4162 dsrm = (struct nfsrvdsremove *)arg;
4163 dsrm->err = nfsrv_dsremove(dsrm->dvp, dsrm->fname, dsrm->tcred,
4166 NFSD_DEBUG(4, "start_dsremove: err=%d\n", dsrm->err);
4170 * Remove a pNFS data file from a Data Server.
4171 * nfsrv_pnfsremovesetup() must have been called before the MDS file was
4172 * removed to set up the dvp and fill in the FH.
4175 nfsrv_pnfsremove(struct vnode **dvp, int mirrorcnt, char *fname, fhandle_t *fhp,
4178 struct ucred *tcred;
4179 struct nfsrvdsremove *dsrm, *tdsrm;
4180 struct nfsdevice *ds;
4181 struct nfsmount *nmp;
4182 int failpos, i, ret, timo;
4184 tcred = newnfs_getcred();
4187 dsrm = malloc(sizeof(*dsrm) * mirrorcnt - 1, M_TEMP, M_WAITOK);
4189 * Remove the file on each DS mirror, using kernel process(es) for the
4190 * additional mirrors.
4193 for (tdsrm = dsrm, i = 0; i < mirrorcnt - 1; i++, tdsrm++) {
4194 tdsrm->tcred = tcred;
4196 tdsrm->dvp = dvp[i];
4197 strlcpy(tdsrm->fname, fname, PNFS_FILENAME_LEN + 1);
4202 if (nfs_pnfsiothreads != 0) {
4203 ret = nfs_pnfsio(start_dsremove, tdsrm);
4204 NFSD_DEBUG(4, "nfsrv_pnfsremove: nfs_pnfsio=%d\n", ret);
4207 ret = nfsrv_dsremove(dvp[i], fname, tcred, p);
4208 if (failpos == -1 && nfsds_failerr(ret))
4212 ret = nfsrv_dsremove(dvp[mirrorcnt - 1], fname, tcred, p);
4213 if (failpos == -1 && mirrorcnt > 1 && nfsds_failerr(ret))
4214 failpos = mirrorcnt - 1;
4215 timo = hz / 50; /* Wait for 20msec. */
4218 /* Wait for kernel task(s) to complete. */
4219 for (tdsrm = dsrm, i = 0; i < mirrorcnt - 1; i++, tdsrm++) {
4220 while (tdsrm->inprog != 0 && tdsrm->done == 0)
4221 tsleep(&tdsrm->tsk, PVFS, "srvdsrm", timo);
4222 if (failpos == -1 && nfsds_failerr(tdsrm->err))
4227 * If failpos has been set, that mirror has failed, so it needs
4231 nmp = VFSTONFS(dvp[failpos]->v_mount);
4233 if ((nmp->nm_privflag & (NFSMNTP_FORCEDISM |
4234 NFSMNTP_CANCELRPCS)) == 0) {
4235 nmp->nm_privflag |= NFSMNTP_CANCELRPCS;
4237 ds = nfsrv_deldsnmp(nmp, p);
4238 NFSD_DEBUG(4, "dsremovefail fail=%d ds=%p\n", failpos,
4241 nfsrv_killrpcs(nmp);
4243 nmp->nm_privflag &= ~NFSMNTP_CANCELRPCS;
4249 /* Get rid all layouts for the file. */
4250 nfsrv_freefilelayouts(fhp);
4257 * Generate a file name based on the file handle and put it in *bufp.
4258 * Return the number of bytes generated.
4261 nfsrv_putfhname(fhandle_t *fhp, char *bufp)
4265 const uint8_t *hexdigits = "0123456789abcdef";
4267 cp = (uint8_t *)fhp;
4268 for (i = 0; i < sizeof(*fhp); i++) {
4269 bufp[2 * i] = hexdigits[(*cp >> 4) & 0xf];
4270 bufp[2 * i + 1] = hexdigits[*cp++ & 0xf];
4277 * Update the Metadata file's attributes from the DS file when a Read/Write
4278 * layout is returned.
4279 * Basically just call nfsrv_proxyds() with procedure == NFSPROC_LAYOUTRETURN
4280 * so that it does a nfsrv_getattrdsrpc() and nfsrv_setextattr() on the DS file.
4283 nfsrv_updatemdsattr(struct vnode *vp, struct nfsvattr *nap, NFSPROC_T *p)
4285 struct ucred *tcred;
4288 /* Do this as root so that it won't fail with EACCES. */
4289 tcred = newnfs_getcred();
4290 error = nfsrv_proxyds(NULL, vp, 0, 0, tcred, p, NFSPROC_LAYOUTRETURN,
4291 NULL, NULL, NULL, nap, NULL);
4297 * Set the NFSv4 ACL on the DS file to the same ACL as the MDS file.
4300 nfsrv_dssetacl(struct vnode *vp, struct acl *aclp, struct ucred *cred,
4305 error = nfsrv_proxyds(NULL, vp, 0, 0, cred, p, NFSPROC_SETACL,
4306 NULL, NULL, NULL, NULL, aclp);
4311 nfsrv_proxyds(struct nfsrv_descript *nd, struct vnode *vp, off_t off, int cnt,
4312 struct ucred *cred, struct thread *p, int ioproc, struct mbuf **mpp,
4313 char *cp, struct mbuf **mpp2, struct nfsvattr *nap, struct acl *aclp)
4315 struct nfsmount *nmp[NFSDEV_MAXMIRRORS], *failnmp;
4316 fhandle_t fh[NFSDEV_MAXMIRRORS];
4317 struct vnode *dvp[NFSDEV_MAXMIRRORS];
4318 struct nfsdevice *ds;
4319 struct pnfsdsattr dsattr;
4321 int buflen, error, failpos, i, mirrorcnt, origmircnt, trycnt;
4323 NFSD_DEBUG(4, "in nfsrv_proxyds\n");
4325 * If not a regular file, not exported or not a pNFS server,
4326 * just return ENOENT.
4328 if (vp->v_type != VREG || (vp->v_mount->mnt_flag & MNT_EXPORTED) == 0 ||
4329 nfsrv_devidcnt == 0)
4333 buf = malloc(buflen, M_TEMP, M_WAITOK);
4337 * For Getattr, get the Change attribute (va_filerev) and size (va_size)
4338 * from the MetaData file's extended attribute.
4340 if (ioproc == NFSPROC_GETATTR) {
4341 error = vn_extattr_get(vp, IO_NODELOCKED,
4342 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsattr", &buflen, buf,
4344 if (error == 0 && buflen != sizeof(dsattr))
4347 NFSBCOPY(buf, &dsattr, buflen);
4348 nap->na_filerev = dsattr.dsa_filerev;
4349 nap->na_size = dsattr.dsa_size;
4350 nap->na_atime = dsattr.dsa_atime;
4351 nap->na_mtime = dsattr.dsa_mtime;
4354 * If nfsrv_pnfsgetdsattr is 0 or nfsrv_checkdsattr()
4355 * returns 0, just return now. nfsrv_checkdsattr()
4356 * returns 0 if there is no Read/Write layout
4357 * plus either an Open/Write_access or Write
4358 * delegation issued to a client for the file.
4360 if (nfsrv_pnfsgetdsattr == 0 ||
4361 nfsrv_checkdsattr(nd, vp, p) == 0) {
4368 * Clear ENOATTR so the code below will attempt to do a
4369 * nfsrv_getattrdsrpc() to get the attributes and (re)create
4370 * the extended attribute.
4372 if (error == ENOATTR)
4381 error = nfsrv_dsgetsockmnt(vp, LK_SHARED, buf, &buflen,
4382 &mirrorcnt, p, dvp, fh, NULL, NULL, NULL, NULL, NULL,
4385 for (i = 0; i < mirrorcnt; i++)
4386 nmp[i] = VFSTONFS(dvp[i]->v_mount);
4388 printf("pNFS: proxy getextattr sockaddr=%d\n", error);
4390 printf("pNFS: nfsrv_dsgetsockmnt=%d\n", error);
4393 if (origmircnt == -1)
4394 origmircnt = mirrorcnt;
4396 * If failpos is set to a mirror#, then that mirror has
4397 * failed and will be disabled. For Read and Getattr, the
4398 * function only tries one mirror, so if that mirror has
4399 * failed, it will need to be retried. As such, increment
4400 * tryitagain for these cases.
4401 * For Write, Setattr and Setacl, the function tries all
4402 * mirrors and will not return an error for the case where
4403 * one mirror has failed. For these cases, the functioning
4404 * mirror(s) will have been modified, so a retry isn't
4405 * necessary. These functions will set failpos for the
4408 if (ioproc == NFSPROC_READDS) {
4409 error = nfsrv_readdsrpc(fh, off, cnt, cred, p, nmp[0],
4411 if (nfsds_failerr(error) && mirrorcnt > 1) {
4413 * Setting failpos will cause the mirror
4414 * to be disabled and then a retry of this
4421 } else if (ioproc == NFSPROC_WRITEDS)
4422 error = nfsrv_writedsrpc(fh, off, cnt, cred, p, vp,
4423 &nmp[0], mirrorcnt, mpp, cp, &failpos);
4424 else if (ioproc == NFSPROC_SETATTR)
4425 error = nfsrv_setattrdsrpc(fh, cred, p, vp, &nmp[0],
4426 mirrorcnt, nap, &failpos);
4427 else if (ioproc == NFSPROC_SETACL)
4428 error = nfsrv_setacldsrpc(fh, cred, p, vp, &nmp[0],
4429 mirrorcnt, aclp, &failpos);
4431 error = nfsrv_getattrdsrpc(&fh[mirrorcnt - 1], cred, p,
4432 vp, nmp[mirrorcnt - 1], nap);
4433 if (nfsds_failerr(error) && mirrorcnt > 1) {
4435 * Setting failpos will cause the mirror
4436 * to be disabled and then a retry of this
4437 * getattr is required.
4439 failpos = mirrorcnt - 1;
4446 failnmp = nmp[failpos];
4447 NFSLOCKMNT(failnmp);
4448 if ((failnmp->nm_privflag & (NFSMNTP_FORCEDISM |
4449 NFSMNTP_CANCELRPCS)) == 0) {
4450 failnmp->nm_privflag |= NFSMNTP_CANCELRPCS;
4451 NFSUNLOCKMNT(failnmp);
4452 ds = nfsrv_deldsnmp(failnmp, p);
4453 NFSD_DEBUG(4, "dsldsnmp fail=%d ds=%p\n",
4456 nfsrv_killrpcs(failnmp);
4457 NFSLOCKMNT(failnmp);
4458 failnmp->nm_privflag &= ~NFSMNTP_CANCELRPCS;
4461 NFSUNLOCKMNT(failnmp);
4463 for (i = 0; i < mirrorcnt; i++)
4464 NFSVOPUNLOCK(dvp[i], 0);
4465 NFSD_DEBUG(4, "nfsrv_proxyds: aft RPC=%d trya=%d\n", error,
4467 /* Try the Read/Getattr again if a mirror was deleted. */
4468 if (ds != NULL && trycnt > 0 && trycnt < origmircnt)
4471 /* Return ENOENT for any Extended Attribute error. */
4475 NFSD_DEBUG(4, "nfsrv_proxyds: error=%d\n", error);
4480 * Get the DS mount point, fh and directory from the "pnfsd.dsfile" extended
4482 * newnmpp - If it points to a non-NULL nmp, that is the destination and needs
4483 * to be checked. If it points to a NULL nmp, then it returns
4484 * a suitable destination.
4485 * curnmp - If non-NULL, it is the source mount for the copy.
4488 nfsrv_dsgetsockmnt(struct vnode *vp, int lktype, char *buf, int *buflenp,
4489 int *mirrorcntp, NFSPROC_T *p, struct vnode **dvpp, fhandle_t *fhp,
4490 char *devid, char *fnamep, struct vnode **nvpp, struct nfsmount **newnmpp,
4491 struct nfsmount *curnmp, int *ippos, int *dsdirp)
4493 struct vnode *dvp, *nvp, **tdvpp;
4495 struct nfsmount *nmp, *newnmp;
4496 struct sockaddr *sad;
4497 struct sockaddr_in *sin;
4498 struct nfsdevice *ds, *fndds;
4499 struct pnfsdsfile *pf;
4501 int error, fhiszero, fnd, gotone, i, mirrorcnt;
4503 ASSERT_VOP_LOCKED(vp, "nfsrv_dsgetsockmnt vp");
4512 if (newnmpp != NULL)
4517 error = vn_extattr_get(vp, IO_NODELOCKED, EXTATTR_NAMESPACE_SYSTEM,
4518 "pnfsd.dsfile", buflenp, buf, p);
4519 mirrorcnt = *buflenp / sizeof(*pf);
4520 if (error == 0 && (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS ||
4521 *buflenp != sizeof(*pf) * mirrorcnt))
4524 pf = (struct pnfsdsfile *)buf;
4525 /* If curnmp != NULL, check for a match in the mirror list. */
4526 if (curnmp != NULL && error == 0) {
4528 for (i = 0; i < mirrorcnt; i++, pf++) {
4529 sad = (struct sockaddr *)&pf->dsf_sin;
4530 if (nfsaddr2_match(sad, curnmp->nm_nam)) {
4542 pf = (struct pnfsdsfile *)buf;
4543 NFSD_DEBUG(4, "nfsrv_dsgetsockmnt: mirrorcnt=%d err=%d\n", mirrorcnt,
4545 for (i = 0; i < mirrorcnt && error == 0; i++, pf++) {
4547 sad = (struct sockaddr *)&pf->dsf_sin;
4549 dsdir = pf->dsf_dir;
4550 if (dsdir >= nfsrv_dsdirsize) {
4551 printf("nfsrv_dsgetsockmnt: dsdir=%d\n", dsdir);
4553 } else if (nvpp != NULL && newnmp != NULL &&
4554 nfsaddr2_match(sad, newnmp->nm_nam))
4557 if (ippos != NULL && curnmp == NULL &&
4558 sad->sa_family == AF_INET &&
4559 sin->sin_addr.s_addr == 0)
4561 if (NFSBCMP(&zerofh, &pf->dsf_fh, sizeof(zerofh)) == 0)
4563 /* Use the socket address to find the mount point. */
4566 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) {
4567 if (ds->nfsdev_nmp != NULL) {
4568 dvp = ds->nfsdev_dvp;
4569 nmp = VFSTONFS(dvp->v_mount);
4570 if (nmp != ds->nfsdev_nmp)
4571 printf("different2 nmp %p %p\n",
4572 nmp, ds->nfsdev_nmp);
4573 if (nfsaddr2_match(sad, nmp->nm_nam))
4575 else if (newnmpp != NULL &&
4577 (*newnmpp == NULL ||
4579 (ds->nfsdev_mdsisset == 0 ||
4580 (ds->nfsdev_mdsfsid.val[0] ==
4581 mp->mnt_stat.f_fsid.val[0] &&
4582 ds->nfsdev_mdsfsid.val[1] ==
4583 mp->mnt_stat.f_fsid.val[1])))
4585 * Return a destination for the
4586 * copy in newnmpp. Choose the
4587 * last valid one before the
4588 * source mirror, so it isn't
4589 * always the first one.
4595 if (fndds != NULL) {
4596 dvp = fndds->nfsdev_dsdir[dsdir];
4597 if (lktype != 0 || fhiszero != 0 ||
4598 (nvpp != NULL && *nvpp == NULL)) {
4600 error = vn_lock(dvp,
4602 else if (lktype != 0)
4603 error = vn_lock(dvp, lktype);
4605 error = vn_lock(dvp, LK_SHARED);
4607 * If the file handle is all 0's, try to
4608 * do a Lookup against the DS to acquire
4610 * If dvpp == NULL or the Lookup fails,
4611 * unlock dvp after the call.
4613 if (error == 0 && (fhiszero != 0 ||
4614 (nvpp != NULL && *nvpp == NULL))) {
4615 error = nfsrv_pnfslookupds(vp,
4629 if (error != 0 || lktype == 0)
4630 NFSVOPUNLOCK(dvp, 0);
4635 NFSD_DEBUG(4, "gotone=%d\n", gotone);
4636 if (devid != NULL) {
4637 NFSBCOPY(fndds->nfsdev_deviceid,
4638 devid, NFSX_V4DEVICEID);
4639 devid += NFSX_V4DEVICEID;
4644 NFSBCOPY(&pf->dsf_fh, fhp++,
4646 if (fnamep != NULL && gotone == 1)
4649 sizeof(pf->dsf_filename));
4651 NFSD_DEBUG(4, "nfsrv_dsgetsockmnt "
4656 if (error == 0 && gotone == 0)
4659 NFSD_DEBUG(4, "eo nfsrv_dsgetsockmnt: gotone=%d err=%d\n", gotone,
4662 *mirrorcntp = gotone;
4664 if (gotone > 0 && dvpp != NULL) {
4666 * If the error didn't occur on the first one and
4667 * dvpp != NULL, the one(s) prior to the failure will
4668 * have locked dvp's that need to be unlocked.
4670 for (i = 0; i < gotone; i++) {
4671 NFSVOPUNLOCK(*dvpp, 0);
4676 * If it found the vnode to be copied from before a failure,
4677 * it needs to be vput()'d.
4679 if (nvpp != NULL && *nvpp != NULL) {
4688 * Set the extended attribute for the Change attribute.
4691 nfsrv_setextattr(struct vnode *vp, struct nfsvattr *nap, NFSPROC_T *p)
4693 struct pnfsdsattr dsattr;
4697 ASSERT_VOP_ELOCKED(vp, "nfsrv_setextattr vp");
4698 error = vn_start_write(vp, &mp, V_WAIT);
4700 dsattr.dsa_filerev = nap->na_filerev;
4701 dsattr.dsa_size = nap->na_size;
4702 dsattr.dsa_atime = nap->na_atime;
4703 dsattr.dsa_mtime = nap->na_mtime;
4704 error = vn_extattr_set(vp, IO_NODELOCKED,
4705 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsattr",
4706 sizeof(dsattr), (char *)&dsattr, p);
4707 vn_finished_write(mp);
4710 printf("pNFS: setextattr=%d\n", error);
4715 nfsrv_readdsrpc(fhandle_t *fhp, off_t off, int len, struct ucred *cred,
4716 NFSPROC_T *p, struct nfsmount *nmp, struct mbuf **mpp, struct mbuf **mpendp)
4719 struct nfsrv_descript *nd;
4721 struct mbuf *m, *m2;
4722 int error = 0, retlen, tlen, trimlen;
4724 NFSD_DEBUG(4, "in nfsrv_readdsrpc\n");
4725 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO);
4728 * Use a stateid where other is an alternating 01010 pattern and
4729 * seqid is 0xffffffff. This value is not defined as special by
4730 * the RFC and is used by the FreeBSD NFS server to indicate an
4731 * MDS->DS proxy operation.
4733 st.other[0] = 0x55555555;
4734 st.other[1] = 0x55555555;
4735 st.other[2] = 0x55555555;
4736 st.seqid = 0xffffffff;
4737 nfscl_reqstart(nd, NFSPROC_READDS, nmp, (u_int8_t *)fhp, sizeof(*fhp),
4739 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID);
4740 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3);
4741 txdr_hyper(off, tl);
4742 *(tl + 2) = txdr_unsigned(len);
4743 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4744 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4749 if (nd->nd_repstat == 0) {
4750 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
4751 NFSM_STRSIZ(retlen, len);
4753 /* Trim off the pre-data XDR from the mbuf chain. */
4755 while (m != NULL && m != nd->nd_md) {
4756 if (m->m_next == nd->nd_md) {
4758 m_freem(nd->nd_mrep);
4759 nd->nd_mrep = m = nd->nd_md;
4764 printf("nfsrv_readdsrpc: busted mbuf list\n");
4770 * Now, adjust first mbuf so that any XDR before the
4771 * read data is skipped over.
4773 trimlen = nd->nd_dpos - mtod(m, char *);
4775 m->m_len -= trimlen;
4776 NFSM_DATAP(m, trimlen);
4780 * Truncate the mbuf chain at retlen bytes of data,
4781 * plus XDR padding that brings the length up to a
4784 tlen = NFSM_RNDUP(retlen);
4786 if (m->m_len >= tlen) {
4796 } while (m != NULL);
4798 printf("nfsrv_readdsrpc: busted mbuf list\n");
4807 error = nd->nd_repstat;
4809 /* If nd->nd_mrep is already NULL, this is a no-op. */
4810 m_freem(nd->nd_mrep);
4812 NFSD_DEBUG(4, "nfsrv_readdsrpc error=%d\n", error);
4817 * Do a write RPC on a DS data file, using this structure for the arguments,
4818 * so that this function can be executed by a separate kernel process.
4820 struct nfsrvwritedsdorpc {
4827 struct nfsmount *nmp;
4835 nfsrv_writedsdorpc(struct nfsmount *nmp, fhandle_t *fhp, off_t off, int len,
4836 struct nfsvattr *nap, struct mbuf *m, struct ucred *cred, NFSPROC_T *p)
4839 struct nfsrv_descript *nd;
4840 nfsattrbit_t attrbits;
4842 int commit, error, retlen;
4844 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO);
4845 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, (u_int8_t *)fhp,
4846 sizeof(fhandle_t), NULL, NULL, 0, 0);
4849 * Use a stateid where other is an alternating 01010 pattern and
4850 * seqid is 0xffffffff. This value is not defined as special by
4851 * the RFC and is used by the FreeBSD NFS server to indicate an
4852 * MDS->DS proxy operation.
4854 st.other[0] = 0x55555555;
4855 st.other[1] = 0x55555555;
4856 st.other[2] = 0x55555555;
4857 st.seqid = 0xffffffff;
4858 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID);
4859 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
4860 txdr_hyper(off, tl);
4863 * Do all writes FileSync, since the server doesn't hold onto dirty
4864 * buffers. Since clients should be accessing the DS servers directly
4865 * using the pNFS layouts, this just needs to work correctly as a
4868 *tl++ = txdr_unsigned(NFSWRITE_FILESYNC);
4869 *tl = txdr_unsigned(len);
4870 NFSD_DEBUG(4, "nfsrv_writedsdorpc: len=%d\n", len);
4872 /* Put data in mbuf chain. */
4873 nd->nd_mb->m_next = m;
4875 /* Set nd_mb and nd_bpos to end of data. */
4876 while (m->m_next != NULL)
4879 nd->nd_bpos = mtod(m, char *) + m->m_len;
4880 NFSD_DEBUG(4, "nfsrv_writedsdorpc: lastmb len=%d\n", m->m_len);
4882 /* Do a Getattr for Size, Change and Modify Time. */
4883 NFSZERO_ATTRBIT(&attrbits);
4884 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE);
4885 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
4886 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS);
4887 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
4888 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4889 *tl = txdr_unsigned(NFSV4OP_GETATTR);
4890 (void) nfsrv_putattrbit(nd, &attrbits);
4891 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
4892 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4897 NFSD_DEBUG(4, "nfsrv_writedsdorpc: aft writerpc=%d\n", nd->nd_repstat);
4898 /* Get rid of weak cache consistency data for now. */
4899 if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) ==
4900 (ND_NFSV4 | ND_V4WCCATTR)) {
4901 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL,
4902 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL);
4903 NFSD_DEBUG(4, "nfsrv_writedsdorpc: wcc attr=%d\n", error);
4907 * Get rid of Op# and status for next op.
4909 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
4911 nd->nd_flag |= ND_NOMOREDATA;
4913 if (nd->nd_repstat == 0) {
4914 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF);
4915 retlen = fxdr_unsigned(int, *tl++);
4916 commit = fxdr_unsigned(int, *tl);
4917 if (commit != NFSWRITE_FILESYNC)
4919 NFSD_DEBUG(4, "nfsrv_writedsdorpc:retlen=%d commit=%d err=%d\n",
4920 retlen, commit, error);
4922 error = nd->nd_repstat;
4923 /* We have no use for the Write Verifier since we use FileSync. */
4926 * Get the Change, Size, Access Time and Modify Time attributes and set
4927 * on the Metadata file, so its attributes will be what the file's
4928 * would be if it had been written.
4931 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
4932 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL,
4933 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL);
4935 NFSD_DEBUG(4, "nfsrv_writedsdorpc: aft loadattr=%d\n", error);
4937 m_freem(nd->nd_mrep);
4939 NFSD_DEBUG(4, "nfsrv_writedsdorpc error=%d\n", error);
4944 * Start up the thread that will execute nfsrv_writedsdorpc().
4947 start_writedsdorpc(void *arg, int pending)
4949 struct nfsrvwritedsdorpc *drpc;
4951 drpc = (struct nfsrvwritedsdorpc *)arg;
4952 drpc->err = nfsrv_writedsdorpc(drpc->nmp, &drpc->fh, drpc->off,
4953 drpc->len, NULL, drpc->m, drpc->cred, drpc->p);
4955 NFSD_DEBUG(4, "start_writedsdorpc: err=%d\n", drpc->err);
4959 nfsrv_writedsrpc(fhandle_t *fhp, off_t off, int len, struct ucred *cred,
4960 NFSPROC_T *p, struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt,
4961 struct mbuf **mpp, char *cp, int *failposp)
4963 struct nfsrvwritedsdorpc *drpc, *tdrpc;
4966 int error, i, offs, ret, timo;
4968 NFSD_DEBUG(4, "in nfsrv_writedsrpc\n");
4969 KASSERT(*mpp != NULL, ("nfsrv_writedsrpc: NULL mbuf chain"));
4972 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP,
4975 /* Calculate offset in mbuf chain that data starts. */
4976 offs = cp - mtod(*mpp, char *);
4977 NFSD_DEBUG(4, "nfsrv_writedsrpc: mcopy offs=%d len=%d\n", offs, len);
4980 * Do the write RPC for every DS, using a separate kernel process
4981 * for every DS except the last one.
4984 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) {
4994 tdrpc->m = m_copym(*mpp, offs, NFSM_RNDUP(len), M_WAITOK);
4996 if (nfs_pnfsiothreads != 0) {
4997 ret = nfs_pnfsio(start_writedsdorpc, tdrpc);
4998 NFSD_DEBUG(4, "nfsrv_writedsrpc: nfs_pnfsio=%d\n",
5002 ret = nfsrv_writedsdorpc(*nmpp, fhp, off, len, NULL,
5004 if (nfsds_failerr(ret) && *failposp == -1)
5006 else if (error == 0 && ret != 0)
5012 m = m_copym(*mpp, offs, NFSM_RNDUP(len), M_WAITOK);
5013 ret = nfsrv_writedsdorpc(*nmpp, fhp, off, len, &na, m, cred, p);
5014 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1)
5015 *failposp = mirrorcnt - 1;
5016 else if (error == 0 && ret != 0)
5019 error = nfsrv_setextattr(vp, &na, p);
5020 NFSD_DEBUG(4, "nfsrv_writedsrpc: aft setextat=%d\n", error);
5022 timo = hz / 50; /* Wait for 20msec. */
5025 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) {
5026 /* Wait for RPCs on separate threads to complete. */
5027 while (tdrpc->inprog != 0 && tdrpc->done == 0)
5028 tsleep(&tdrpc->tsk, PVFS, "srvwrds", timo);
5029 if (nfsds_failerr(tdrpc->err) && *failposp == -1)
5031 else if (error == 0 && tdrpc->err != 0)
5039 nfsrv_setattrdsdorpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p,
5040 struct vnode *vp, struct nfsmount *nmp, struct nfsvattr *nap,
5041 struct nfsvattr *dsnap)
5044 struct nfsrv_descript *nd;
5046 nfsattrbit_t attrbits;
5049 NFSD_DEBUG(4, "in nfsrv_setattrdsdorpc\n");
5050 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO);
5052 * Use a stateid where other is an alternating 01010 pattern and
5053 * seqid is 0xffffffff. This value is not defined as special by
5054 * the RFC and is used by the FreeBSD NFS server to indicate an
5055 * MDS->DS proxy operation.
5057 st.other[0] = 0x55555555;
5058 st.other[1] = 0x55555555;
5059 st.other[2] = 0x55555555;
5060 st.seqid = 0xffffffff;
5061 nfscl_reqstart(nd, NFSPROC_SETATTR, nmp, (u_int8_t *)fhp, sizeof(*fhp),
5063 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID);
5064 nfscl_fillsattr(nd, &nap->na_vattr, vp, NFSSATTR_FULL, 0);
5066 /* Do a Getattr for Size, Change, Access Time and Modify Time. */
5067 NFSZERO_ATTRBIT(&attrbits);
5068 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE);
5069 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
5070 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS);
5071 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
5072 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
5073 *tl = txdr_unsigned(NFSV4OP_GETATTR);
5074 (void) nfsrv_putattrbit(nd, &attrbits);
5075 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5076 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5081 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: aft setattrrpc=%d\n",
5083 /* Get rid of weak cache consistency data for now. */
5084 if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) ==
5085 (ND_NFSV4 | ND_V4WCCATTR)) {
5086 error = nfsv4_loadattr(nd, NULL, dsnap, NULL, NULL, 0, NULL,
5087 NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL);
5088 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: wcc attr=%d\n", error);
5092 * Get rid of Op# and status for next op.
5094 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
5096 nd->nd_flag |= ND_NOMOREDATA;
5098 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
5101 if (nd->nd_repstat != 0)
5102 error = nd->nd_repstat;
5104 * Get the Change, Size, Access Time and Modify Time attributes and set
5105 * on the Metadata file, so its attributes will be what the file's
5106 * would be if it had been written.
5109 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
5110 error = nfsv4_loadattr(nd, NULL, dsnap, NULL, NULL, 0, NULL,
5111 NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL);
5113 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: aft setattr loadattr=%d\n", error);
5115 m_freem(nd->nd_mrep);
5117 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc error=%d\n", error);
5121 struct nfsrvsetattrdsdorpc {
5126 struct nfsmount *nmp;
5131 struct nfsvattr dsna;
5136 * Start up the thread that will execute nfsrv_setattrdsdorpc().
5139 start_setattrdsdorpc(void *arg, int pending)
5141 struct nfsrvsetattrdsdorpc *drpc;
5143 drpc = (struct nfsrvsetattrdsdorpc *)arg;
5144 drpc->err = nfsrv_setattrdsdorpc(&drpc->fh, drpc->cred, drpc->p,
5145 drpc->vp, drpc->nmp, &drpc->na, &drpc->dsna);
5150 nfsrv_setattrdsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p,
5151 struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt,
5152 struct nfsvattr *nap, int *failposp)
5154 struct nfsrvsetattrdsdorpc *drpc, *tdrpc;
5156 int error, i, ret, timo;
5158 NFSD_DEBUG(4, "in nfsrv_setattrdsrpc\n");
5161 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP,
5165 * Do the setattr RPC for every DS, using a separate kernel process
5166 * for every DS except the last one.
5169 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) {
5180 if (nfs_pnfsiothreads != 0) {
5181 ret = nfs_pnfsio(start_setattrdsdorpc, tdrpc);
5182 NFSD_DEBUG(4, "nfsrv_setattrdsrpc: nfs_pnfsio=%d\n",
5186 ret = nfsrv_setattrdsdorpc(fhp, cred, p, vp, *nmpp, nap,
5188 if (nfsds_failerr(ret) && *failposp == -1)
5190 else if (error == 0 && ret != 0)
5196 ret = nfsrv_setattrdsdorpc(fhp, cred, p, vp, *nmpp, nap, &na);
5197 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1)
5198 *failposp = mirrorcnt - 1;
5199 else if (error == 0 && ret != 0)
5202 error = nfsrv_setextattr(vp, &na, p);
5203 NFSD_DEBUG(4, "nfsrv_setattrdsrpc: aft setextat=%d\n", error);
5205 timo = hz / 50; /* Wait for 20msec. */
5208 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) {
5209 /* Wait for RPCs on separate threads to complete. */
5210 while (tdrpc->inprog != 0 && tdrpc->done == 0)
5211 tsleep(&tdrpc->tsk, PVFS, "srvsads", timo);
5212 if (nfsds_failerr(tdrpc->err) && *failposp == -1)
5214 else if (error == 0 && tdrpc->err != 0)
5222 * Do a Setattr of an NFSv4 ACL on the DS file.
5225 nfsrv_setacldsdorpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p,
5226 struct vnode *vp, struct nfsmount *nmp, struct acl *aclp)
5228 struct nfsrv_descript *nd;
5230 nfsattrbit_t attrbits;
5233 NFSD_DEBUG(4, "in nfsrv_setacldsdorpc\n");
5234 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO);
5236 * Use a stateid where other is an alternating 01010 pattern and
5237 * seqid is 0xffffffff. This value is not defined as special by
5238 * the RFC and is used by the FreeBSD NFS server to indicate an
5239 * MDS->DS proxy operation.
5241 st.other[0] = 0x55555555;
5242 st.other[1] = 0x55555555;
5243 st.other[2] = 0x55555555;
5244 st.seqid = 0xffffffff;
5245 nfscl_reqstart(nd, NFSPROC_SETACL, nmp, (u_int8_t *)fhp, sizeof(*fhp),
5247 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID);
5248 NFSZERO_ATTRBIT(&attrbits);
5249 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
5251 * The "vp" argument to nfsv4_fillattr() is only used for vnode_type(),
5252 * so passing in the metadata "vp" will be ok, since it is of
5253 * the same type (VREG).
5255 nfsv4_fillattr(nd, NULL, vp, aclp, NULL, NULL, 0, &attrbits, NULL,
5256 NULL, 0, 0, 0, 0, 0, NULL);
5257 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5258 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5263 NFSD_DEBUG(4, "nfsrv_setacldsdorpc: aft setaclrpc=%d\n",
5265 error = nd->nd_repstat;
5266 m_freem(nd->nd_mrep);
5271 struct nfsrvsetacldsdorpc {
5276 struct nfsmount *nmp;
5285 * Start up the thread that will execute nfsrv_setacldsdorpc().
5288 start_setacldsdorpc(void *arg, int pending)
5290 struct nfsrvsetacldsdorpc *drpc;
5292 drpc = (struct nfsrvsetacldsdorpc *)arg;
5293 drpc->err = nfsrv_setacldsdorpc(&drpc->fh, drpc->cred, drpc->p,
5294 drpc->vp, drpc->nmp, drpc->aclp);
5299 nfsrv_setacldsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p,
5300 struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, struct acl *aclp,
5303 struct nfsrvsetacldsdorpc *drpc, *tdrpc;
5304 int error, i, ret, timo;
5306 NFSD_DEBUG(4, "in nfsrv_setacldsrpc\n");
5309 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP,
5313 * Do the setattr RPC for every DS, using a separate kernel process
5314 * for every DS except the last one.
5317 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) {
5328 if (nfs_pnfsiothreads != 0) {
5329 ret = nfs_pnfsio(start_setacldsdorpc, tdrpc);
5330 NFSD_DEBUG(4, "nfsrv_setacldsrpc: nfs_pnfsio=%d\n",
5334 ret = nfsrv_setacldsdorpc(fhp, cred, p, vp, *nmpp,
5336 if (nfsds_failerr(ret) && *failposp == -1)
5338 else if (error == 0 && ret != 0)
5344 ret = nfsrv_setacldsdorpc(fhp, cred, p, vp, *nmpp, aclp);
5345 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1)
5346 *failposp = mirrorcnt - 1;
5347 else if (error == 0 && ret != 0)
5349 NFSD_DEBUG(4, "nfsrv_setacldsrpc: aft setextat=%d\n", error);
5351 timo = hz / 50; /* Wait for 20msec. */
5354 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) {
5355 /* Wait for RPCs on separate threads to complete. */
5356 while (tdrpc->inprog != 0 && tdrpc->done == 0)
5357 tsleep(&tdrpc->tsk, PVFS, "srvacds", timo);
5358 if (nfsds_failerr(tdrpc->err) && *failposp == -1)
5360 else if (error == 0 && tdrpc->err != 0)
5368 * Getattr call to the DS for the Modify, Size and Change attributes.
5371 nfsrv_getattrdsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p,
5372 struct vnode *vp, struct nfsmount *nmp, struct nfsvattr *nap)
5374 struct nfsrv_descript *nd;
5376 nfsattrbit_t attrbits;
5378 NFSD_DEBUG(4, "in nfsrv_getattrdsrpc\n");
5379 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO);
5380 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, (u_int8_t *)fhp,
5381 sizeof(fhandle_t), NULL, NULL, 0, 0);
5382 NFSZERO_ATTRBIT(&attrbits);
5383 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE);
5384 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
5385 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS);
5386 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
5387 (void) nfsrv_putattrbit(nd, &attrbits);
5388 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5389 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5394 NFSD_DEBUG(4, "nfsrv_getattrdsrpc: aft getattrrpc=%d\n",
5396 if (nd->nd_repstat == 0) {
5397 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
5398 NULL, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL,
5401 * We can only save the updated values in the extended
5402 * attribute if the vp is exclusively locked.
5403 * This should happen when any of the following operations
5404 * occur on the vnode:
5405 * Close, Delegreturn, LayoutCommit, LayoutReturn
5406 * As such, the updated extended attribute should get saved
5407 * before nfsrv_checkdsattr() returns 0 and allows the cached
5408 * attributes to be returned without calling this function.
5410 if (error == 0 && VOP_ISLOCKED(vp) == LK_EXCLUSIVE) {
5411 error = nfsrv_setextattr(vp, nap, p);
5412 NFSD_DEBUG(4, "nfsrv_getattrdsrpc: aft setextat=%d\n",
5416 error = nd->nd_repstat;
5417 m_freem(nd->nd_mrep);
5419 NFSD_DEBUG(4, "nfsrv_getattrdsrpc error=%d\n", error);
5424 * Get the device id and file handle for a DS file.
5427 nfsrv_dsgetdevandfh(struct vnode *vp, NFSPROC_T *p, int *mirrorcntp,
5428 fhandle_t *fhp, char *devid)
5434 buf = malloc(buflen, M_TEMP, M_WAITOK);
5435 error = nfsrv_dsgetsockmnt(vp, 0, buf, &buflen, mirrorcntp, p, NULL,
5436 fhp, devid, NULL, NULL, NULL, NULL, NULL, NULL);
5442 * Do a Lookup against the DS for the filename.
5445 nfsrv_pnfslookupds(struct vnode *vp, struct vnode *dvp, struct pnfsdsfile *pf,
5446 struct vnode **nvpp, NFSPROC_T *p)
5448 struct nameidata named;
5449 struct ucred *tcred;
5455 tcred = newnfs_getcred();
5456 named.ni_cnd.cn_nameiop = LOOKUP;
5457 named.ni_cnd.cn_lkflags = LK_SHARED | LK_RETRY;
5458 named.ni_cnd.cn_cred = tcred;
5459 named.ni_cnd.cn_thread = p;
5460 named.ni_cnd.cn_flags = ISLASTCN | LOCKPARENT | LOCKLEAF | SAVENAME;
5461 nfsvno_setpathbuf(&named, &bufp, &hashp);
5462 named.ni_cnd.cn_nameptr = bufp;
5463 named.ni_cnd.cn_namelen = strlen(pf->dsf_filename);
5464 strlcpy(bufp, pf->dsf_filename, NAME_MAX);
5465 NFSD_DEBUG(4, "nfsrv_pnfslookupds: filename=%s\n", bufp);
5466 error = VOP_LOOKUP(dvp, &nvp, &named.ni_cnd);
5467 NFSD_DEBUG(4, "nfsrv_pnfslookupds: aft LOOKUP=%d\n", error);
5469 nfsvno_relpathbuf(&named);
5472 NFSD_DEBUG(4, "eo nfsrv_pnfslookupds=%d\n", error);
5477 * Set the file handle to the correct one.
5480 nfsrv_pnfssetfh(struct vnode *vp, struct pnfsdsfile *pf, struct vnode *nvp,
5488 NFSBCOPY(np->n_fhp->nfh_fh, &pf->dsf_fh, NFSX_MYFH);
5490 * We can only do a setextattr for an exclusively
5491 * locked vp. Instead of trying to upgrade a shared
5492 * lock, just leave dsf_fh zeroed out and it will
5493 * keep doing this lookup until it is done with an
5494 * exclusively locked vp.
5496 if (NFSVOPISLOCKED(vp) == LK_EXCLUSIVE) {
5497 ret = vn_start_write(vp, &mp, V_WAIT);
5498 NFSD_DEBUG(4, "nfsrv_pnfssetfh: vn_start_write=%d\n",
5501 ret = vn_extattr_set(vp, IO_NODELOCKED,
5502 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsfile",
5503 sizeof(*pf), (char *)pf, p);
5504 vn_finished_write(mp);
5505 NFSD_DEBUG(4, "nfsrv_pnfslookupds: aft "
5506 "vn_extattr_set=%d\n", ret);
5509 NFSD_DEBUG(4, "eo nfsrv_pnfssetfh=%d\n", ret);
5513 * Cause RPCs waiting on "nmp" to fail. This is called for a DS mount point
5514 * when the DS has failed.
5517 nfsrv_killrpcs(struct nfsmount *nmp)
5521 * Call newnfs_nmcancelreqs() to cause
5522 * any RPCs in progress on the mount point to
5524 * This will cause any process waiting for an
5525 * RPC to complete while holding a vnode lock
5526 * on the mounted-on vnode (such as "df" or
5527 * a non-forced "umount") to fail.
5528 * This will unlock the mounted-on vnode so
5529 * a forced dismount can succeed.
5530 * The NFSMNTP_CANCELRPCS flag should be set when this function is
5533 newnfs_nmcancelreqs(nmp);
5537 * Sum up the statfs info for each of the DSs, so that the client will
5538 * receive the total for all DSs.
5541 nfsrv_pnfsstatfs(struct statfs *sf)
5544 struct nfsdevice *ds;
5545 struct vnode **dvpp, **tdvpp, *dvp;
5547 int cnt, error = 0, i;
5549 if (nfsrv_devidcnt <= 0)
5551 dvpp = mallocarray(nfsrv_devidcnt, sizeof(*dvpp), M_TEMP, M_WAITOK);
5552 tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK);
5554 /* Get an array of the dvps for the DSs. */
5558 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) {
5559 if (ds->nfsdev_nmp != NULL) {
5560 if (++i > nfsrv_devidcnt)
5562 *tdvpp++ = ds->nfsdev_dvp;
5568 /* Do a VFS_STATFS() for each of the DSs and sum them up. */
5570 for (i = 0; i < cnt && error == 0; i++) {
5572 error = VFS_STATFS(dvp->v_mount, tsf);
5574 if (sf->f_bsize == 0) {
5575 if (tsf->f_bsize > 0)
5576 sf->f_bsize = tsf->f_bsize;
5580 if (tsf->f_blocks > 0) {
5581 if (sf->f_bsize != tsf->f_bsize) {
5582 tot = tsf->f_blocks * tsf->f_bsize;
5583 sf->f_blocks += (tot / sf->f_bsize);
5585 sf->f_blocks += tsf->f_blocks;
5587 if (tsf->f_bfree > 0) {
5588 if (sf->f_bsize != tsf->f_bsize) {
5589 tot = tsf->f_bfree * tsf->f_bsize;
5590 sf->f_bfree += (tot / sf->f_bsize);
5592 sf->f_bfree += tsf->f_bfree;
5594 if (tsf->f_bavail > 0) {
5595 if (sf->f_bsize != tsf->f_bsize) {
5596 tot = tsf->f_bavail * tsf->f_bsize;
5597 sf->f_bavail += (tot / sf->f_bsize);
5599 sf->f_bavail += tsf->f_bavail;
5612 nfsrv_setacl(struct vnode *vp, NFSACL_T *aclp, struct ucred *cred, NFSPROC_T *p)
5616 if (nfsrv_useacl == 0 || nfs_supportsnfsv4acls(vp) == 0) {
5617 error = NFSERR_ATTRNOTSUPP;
5621 * With NFSv4 ACLs, chmod(2) may need to add additional entries.
5622 * Make sure it has enough room for that - splitting every entry
5623 * into two and appending "canonical six" entries at the end.
5624 * Cribbed out of kern/vfs_acl.c - Rick M.
5626 if (aclp->acl_cnt > (ACL_MAX_ENTRIES - 6) / 2) {
5627 error = NFSERR_ATTRNOTSUPP;
5630 error = VOP_SETACL(vp, ACL_TYPE_NFS4, aclp, cred, p);
5632 error = nfsrv_dssetacl(vp, aclp, cred, p);
5633 if (error == ENOENT)
5642 extern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *);
5645 * Called once to initialize data structures...
5648 nfsd_modevent(module_t mod, int type, void *data)
5651 static int loaded = 0;
5658 for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) {
5659 mtx_init(&nfsrchash_table[i].mtx, "nfsrtc", NULL,
5661 mtx_init(&nfsrcahash_table[i].mtx, "nfsrtca", NULL,
5664 mtx_init(&nfsrc_udpmtx, "nfsuc", NULL, MTX_DEF);
5665 mtx_init(&nfs_v4root_mutex, "nfs4rt", NULL, MTX_DEF);
5666 mtx_init(&nfsv4root_mnt.mnt_mtx, "nfs4mnt", NULL, MTX_DEF);
5667 mtx_init(&nfsrv_dontlistlock_mtx, "nfs4dnl", NULL, MTX_DEF);
5668 mtx_init(&nfsrv_recalllock_mtx, "nfs4rec", NULL, MTX_DEF);
5669 lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0);
5676 #ifdef VV_DISABLEDELEG
5677 vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation;
5678 vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation;
5680 nfsd_call_servertimer = nfsrv_servertimer;
5681 nfsd_call_nfsd = nfssvc_nfsd;
5686 if (newnfs_numnfsd != 0) {
5691 #ifdef VV_DISABLEDELEG
5692 vn_deleg_ops.vndeleg_recall = NULL;
5693 vn_deleg_ops.vndeleg_disable = NULL;
5695 nfsd_call_servertimer = NULL;
5696 nfsd_call_nfsd = NULL;
5698 /* Clean out all NFSv4 state. */
5699 nfsrv_throwawayallstate(curthread);
5701 /* Clean the NFS server reply cache */
5702 nfsrvd_cleancache();
5704 /* Free up the krpc server pool. */
5705 if (nfsrvd_pool != NULL)
5706 svcpool_destroy(nfsrvd_pool);
5708 /* and get rid of the locks */
5709 for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) {
5710 mtx_destroy(&nfsrchash_table[i].mtx);
5711 mtx_destroy(&nfsrcahash_table[i].mtx);
5713 mtx_destroy(&nfsrc_udpmtx);
5714 mtx_destroy(&nfs_v4root_mutex);
5715 mtx_destroy(&nfsv4root_mnt.mnt_mtx);
5716 mtx_destroy(&nfsrv_dontlistlock_mtx);
5717 mtx_destroy(&nfsrv_recalllock_mtx);
5718 for (i = 0; i < nfsrv_sessionhashsize; i++)
5719 mtx_destroy(&nfssessionhash[i].mtx);
5720 if (nfslayouthash != NULL) {
5721 for (i = 0; i < nfsrv_layouthashsize; i++)
5722 mtx_destroy(&nfslayouthash[i].mtx);
5723 free(nfslayouthash, M_NFSDSESSION);
5725 lockdestroy(&nfsv4root_mnt.mnt_explock);
5726 free(nfsclienthash, M_NFSDCLIENT);
5727 free(nfslockhash, M_NFSDLOCKFILE);
5728 free(nfssessionhash, M_NFSDSESSION);
5740 static moduledata_t nfsd_mod = {
5745 DECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY);
5747 /* So that loader and kldload(2) can find us, wherever we are.. */
5748 MODULE_VERSION(nfsd, 1);
5749 MODULE_DEPEND(nfsd, nfscommon, 1, 1, 1);
5750 MODULE_DEPEND(nfsd, nfslock, 1, 1, 1);
5751 MODULE_DEPEND(nfsd, nfslockd, 1, 1, 1);
5752 MODULE_DEPEND(nfsd, krpc, 1, 1, 1);
5753 MODULE_DEPEND(nfsd, nfssvc, 1, 1, 1);