2 * Copyright (c) 1989, 1993, 1995
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * @(#)nfs_vfsops.c 8.12 (Berkeley) 5/20/95
33 * $FreeBSD: src/sys/nfs/nfs_vfsops.c,v 1.91.2.7 2003/01/27 20:04:08 dillon Exp $
36 #include "opt_bootp.h"
37 #include "opt_nfsroot.h"
39 #include <sys/param.h>
40 #include <sys/sockio.h>
42 #include <sys/vnode.h>
43 #include <sys/fcntl.h>
44 #include <sys/kernel.h>
45 #include <sys/sysctl.h>
46 #include <sys/malloc.h>
47 #include <sys/mount.h>
49 #include <sys/socket.h>
50 #include <sys/socketvar.h>
51 #include <sys/systm.h>
52 #include <sys/objcache.h>
55 #include <vm/vm_extern.h>
58 #include <net/if_var.h>
59 #include <net/route.h>
60 #include <netinet/in.h>
62 #include <sys/thread2.h>
63 #include <sys/mutex2.h>
71 #include "nfsm_subs.h"
72 #include "nfsdiskless.h"
73 #include "nfsmountrpc.h"
75 extern int nfs_mountroot(struct mount *mp);
76 extern void bootpc_init(void);
78 extern struct vop_ops nfsv2_vnode_vops;
79 extern struct vop_ops nfsv2_fifo_vops;
80 extern struct vop_ops nfsv2_spec_vops;
82 MALLOC_DEFINE(M_NFSREQ, "NFS req", "NFS request header");
83 MALLOC_DEFINE(M_NFSBIGFH, "NFSV3 bigfh", "NFS version 3 file handle");
84 MALLOC_DEFINE(M_NFSD, "NFS daemon", "Nfs server daemon structure");
85 MALLOC_DEFINE(M_NFSDIROFF, "NFSV3 diroff", "NFS directory offset data");
86 MALLOC_DEFINE(M_NFSRVDESC, "NFSV3 srvdesc", "NFS server socket descriptor");
87 MALLOC_DEFINE(M_NFSUID, "NFS uid", "Nfs uid mapping structure");
88 MALLOC_DEFINE(M_NFSHASH, "NFS hash", "NFS hash tables");
90 struct objcache *nfsmount_objcache;
92 struct nfsstats nfsstats;
93 SYSCTL_NODE(_vfs, OID_AUTO, nfs, CTLFLAG_RW, 0, "NFS filesystem");
94 SYSCTL_STRUCT(_vfs_nfs, NFS_NFSSTATS, nfsstats, CTLFLAG_RD, &nfsstats, nfsstats,
95 "Nfs stats structure");
96 static int nfs_ip_paranoia = 1;
97 SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs_ip_paranoia, CTLFLAG_RW, &nfs_ip_paranoia, 0,
98 "Enable no-connection mode for protocols that support no-connection mode");
101 SYSCTL_INT(_vfs_nfs, OID_AUTO, debug, CTLFLAG_RW, &nfs_debug, 0, "");
105 * Tunable to determine the Read/Write unit size. Maximum value
106 * is NFS_MAXDATA. We also default to NFS_MAXDATA.
108 static int nfs_io_size = NFS_MAXDATA;
109 SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs_io_size, CTLFLAG_RW,
110 &nfs_io_size, 0, "NFS optimal I/O unit size");
112 static void nfs_decode_args (struct nfsmount *nmp,
113 struct nfs_args *argp);
114 static int mountnfs (struct nfs_args *,struct mount *,
115 struct sockaddr *,char *,char *,struct vnode **);
116 static int nfs_mount ( struct mount *mp, char *path, caddr_t data,
118 static int nfs_unmount ( struct mount *mp, int mntflags);
119 static int nfs_root ( struct mount *mp, struct vnode **vpp);
120 static int nfs_statfs ( struct mount *mp, struct statfs *sbp,
122 static int nfs_statvfs(struct mount *mp, struct statvfs *sbp,
124 static int nfs_sync ( struct mount *mp, int waitfor);
127 * nfs vfs operations.
129 static struct vfsops nfs_vfsops = {
130 .vfs_mount = nfs_mount,
131 .vfs_unmount = nfs_unmount,
132 .vfs_root = nfs_root,
133 .vfs_statfs = nfs_statfs,
134 .vfs_statvfs = nfs_statvfs,
135 .vfs_sync = nfs_sync,
136 .vfs_init = nfs_init,
137 .vfs_uninit = nfs_uninit
139 VFS_SET(nfs_vfsops, nfs, VFCF_NETWORK | VFCF_MPSAFE);
140 MODULE_VERSION(nfs, 1);
143 * This structure must be filled in by a primary bootstrap or bootstrap
144 * server for a diskless/dataless machine. It is initialized below just
145 * to ensure that it is allocated to initialized data (.data not .bss).
147 struct nfs_diskless nfs_diskless = { { { 0 } } };
148 struct nfsv3_diskless nfsv3_diskless = { { { 0 } } };
149 int nfs_diskless_valid = 0;
151 SYSCTL_INT(_vfs_nfs, OID_AUTO, diskless_valid, CTLFLAG_RD,
152 &nfs_diskless_valid, 0,
153 "NFS diskless params were obtained");
155 SYSCTL_STRING(_vfs_nfs, OID_AUTO, diskless_rootpath, CTLFLAG_RD,
156 nfsv3_diskless.root_hostnam, 0,
157 "Host name for mount point");
159 SYSCTL_OPAQUE(_vfs_nfs, OID_AUTO, diskless_rootaddr, CTLFLAG_RD,
160 &nfsv3_diskless.root_saddr, sizeof nfsv3_diskless.root_saddr,
161 "%Ssockaddr_in", "Address of root server");
163 SYSCTL_STRING(_vfs_nfs, OID_AUTO, diskless_swappath, CTLFLAG_RD,
164 nfsv3_diskless.swap_hostnam, 0,
165 "Host name for mount ppoint");
167 SYSCTL_OPAQUE(_vfs_nfs, OID_AUTO, diskless_swapaddr, CTLFLAG_RD,
168 &nfsv3_diskless.swap_saddr, sizeof nfsv3_diskless.swap_saddr,
169 "%Ssockaddr_in", "Address of swap server");
172 void nfsargs_ntoh (struct nfs_args *);
173 static int nfs_mountdiskless (char *, char *, int,
174 struct sockaddr_in *, struct nfs_args *,
175 struct thread *, struct vnode **,
177 static void nfs_convert_diskless (void);
178 static void nfs_convert_oargs (struct nfs_args *args,
179 struct onfs_args *oargs);
182 * Calculate the buffer I/O block size to use. The maximum V2 block size
183 * is typically 8K, the maximum datagram size is typically 16K, and the
184 * maximum V3 block size is typically 32K. The buffer cache tends to work
185 * best with 16K blocks but we allow 32K for TCP connections.
187 * We force the block size to be at least a page for buffer cache efficiency.
190 nfs_iosize(int v3, int sotype)
196 if (sotype == SOCK_STREAM)
199 iomax = NFS_MAXDGRAMDATA;
201 iomax = NFS_V2MAXDATA;
203 if ((iosize = nfs_io_size) > iomax)
205 if (iosize < PAGE_SIZE)
209 * This is an aweful hack but until the buffer cache is rewritten
210 * we need it. The problem is that when you combine write() with
211 * mmap() the vm_page->valid bits can become weird looking
212 * (e.g. 0xfc). This occurs because NFS uses piecemeal buffers
213 * at the file EOF. To solve the problem the BIO system needs to
214 * be guarenteed that the NFS iosize for regular files will be a
215 * multiple of PAGE_SIZE so it can invalidate the whole page
216 * rather then just the piece of it owned by the buffer when
217 * NFS does vinvalbuf() calls.
219 if (iosize & PAGE_MASK)
220 iosize = (iosize & ~PAGE_MASK) + PAGE_SIZE;
225 nfs_convert_oargs(struct nfs_args *args, struct onfs_args *oargs)
227 args->version = NFS_ARGSVERSION;
228 args->addr = oargs->addr;
229 args->addrlen = oargs->addrlen;
230 args->sotype = oargs->sotype;
231 args->proto = oargs->proto;
232 args->fh = oargs->fh;
233 args->fhsize = oargs->fhsize;
234 args->flags = oargs->flags;
235 args->wsize = oargs->wsize;
236 args->rsize = oargs->rsize;
237 args->readdirsize = oargs->readdirsize;
238 args->timeo = oargs->timeo;
239 args->retrans = oargs->retrans;
240 args->maxgrouplist = oargs->maxgrouplist;
241 args->readahead = oargs->readahead;
242 args->deadthresh = oargs->deadthresh;
243 args->hostname = oargs->hostname;
247 nfs_convert_diskless(void)
251 bcopy(&nfs_diskless.myif, &nfsv3_diskless.myif,
252 sizeof(struct ifaliasreq));
253 bcopy(&nfs_diskless.mygateway, &nfsv3_diskless.mygateway,
254 sizeof(struct sockaddr_in));
255 nfs_convert_oargs(&nfsv3_diskless.swap_args, &nfs_diskless.swap_args);
258 * Copy the NFS handle passed from the diskless code.
260 * XXX CURRENTLY DISABLED - bootp passes us a NFSv2 handle which
261 * will fail utterly with HAMMER due to limitations with NFSv2
264 bcopy(nfs_diskless.swap_fh, nfsv3_diskless.swap_fh, NFSX_V2FH);
265 nfsv3_diskless.swap_fhsize = NFSX_V2FH;
266 for (i = NFSX_V2FH - 1; i >= 0; --i) {
267 if (nfs_diskless.swap_fh[i])
271 nfsv3_diskless.swap_fhsize = 0;
272 nfsv3_diskless.swap_fhsize = 0; /* FORCE DISABLE */
274 bcopy(&nfs_diskless.swap_saddr,&nfsv3_diskless.swap_saddr,
275 sizeof(struct sockaddr_in));
276 bcopy(nfs_diskless.swap_hostnam,nfsv3_diskless.swap_hostnam, MNAMELEN);
277 nfsv3_diskless.swap_nblks = nfs_diskless.swap_nblks;
278 bcopy(&nfs_diskless.swap_ucred, &nfsv3_diskless.swap_ucred,
279 sizeof(struct ucred));
280 nfs_convert_oargs(&nfsv3_diskless.root_args, &nfs_diskless.root_args);
283 * Copy the NFS handle passed from the diskless code.
285 * XXX CURRENTLY DISABLED - bootp passes us a NFSv2 handle which
286 * will fail utterly with HAMMER due to limitations with NFSv2
289 bcopy(nfs_diskless.root_fh, nfsv3_diskless.root_fh, NFSX_V2FH);
290 nfsv3_diskless.root_fhsize = NFSX_V2FH;
291 for (i = NFSX_V2FH - 1; i >= 0; --i) {
292 if (nfs_diskless.root_fh[i])
296 nfsv3_diskless.root_fhsize = 0;
297 nfsv3_diskless.root_fhsize = 0; /* FORCE DISABLE */
299 bcopy(&nfs_diskless.root_saddr,&nfsv3_diskless.root_saddr,
300 sizeof(struct sockaddr_in));
301 bcopy(nfs_diskless.root_hostnam,nfsv3_diskless.root_hostnam, MNAMELEN);
302 nfsv3_diskless.root_time = nfs_diskless.root_time;
303 bcopy(nfs_diskless.my_hostnam,nfsv3_diskless.my_hostnam,
305 nfs_diskless_valid = 3;
312 nfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred)
315 struct nfs_statfs *sfp;
316 struct nfsmount *nmp = VFSTONFS(mp);
317 thread_t td = curthread;
318 int error = 0, retattr;
321 struct nfsm_info info;
324 info.v3 = (nmp->nm_flag & NFSMNT_NFSV3);
326 lwkt_gettoken(&nmp->nm_token);
331 error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np, NULL);
333 lwkt_reltoken(&nmp->nm_token);
337 /* ignore the passed cred */
339 cred->cr_ngroups = 1;
340 if (info.v3 && (nmp->nm_state & NFSSTA_GOTFSINFO) == 0)
341 (void)nfs_fsinfo(nmp, vp, td);
342 nfsstats.rpccnt[NFSPROC_FSSTAT]++;
343 nfsm_reqhead(&info, vp, NFSPROC_FSSTAT, NFSX_FH(info.v3));
344 ERROROUT(nfsm_fhtom(&info, vp));
345 NEGKEEPOUT(nfsm_request(&info, vp, NFSPROC_FSSTAT, td, cred, &error));
347 ERROROUT(nfsm_postop_attr(&info, vp, &retattr,
348 NFS_LATTR_NOSHRINK));
351 if (info.mrep != NULL)
355 NULLOUT(sfp = nfsm_dissect(&info, NFSX_STATFS(info.v3)));
356 sbp->f_flags = nmp->nm_flag;
359 sbp->f_bsize = NFS_FABLKSIZE;
360 tquad = fxdr_hyper(&sfp->sf_tbytes);
361 sbp->f_blocks = (long)(tquad / ((u_quad_t)NFS_FABLKSIZE));
362 tquad = fxdr_hyper(&sfp->sf_fbytes);
363 sbp->f_bfree = (long)(tquad / ((u_quad_t)NFS_FABLKSIZE));
364 tquad = fxdr_hyper(&sfp->sf_abytes);
365 sbp->f_bavail = (long)(tquad / ((u_quad_t)NFS_FABLKSIZE));
366 sbp->f_files = (fxdr_unsigned(int32_t,
367 sfp->sf_tfiles.nfsuquad[1]) & 0x7fffffff);
368 sbp->f_ffree = (fxdr_unsigned(int32_t,
369 sfp->sf_ffiles.nfsuquad[1]) & 0x7fffffff);
371 sbp->f_bsize = fxdr_unsigned(int32_t, sfp->sf_bsize);
372 sbp->f_blocks = fxdr_unsigned(int32_t, sfp->sf_blocks);
373 sbp->f_bfree = fxdr_unsigned(int32_t, sfp->sf_bfree);
374 sbp->f_bavail = fxdr_unsigned(int32_t, sfp->sf_bavail);
380 * Some values are pre-set in mnt_stat. Note in particular f_iosize
381 * cannot be changed once the filesystem is mounted as it is used
382 * as the basis for BIOs.
384 if (sbp != &mp->mnt_stat) {
385 sbp->f_type = mp->mnt_vfc->vfc_typenum;
386 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
387 sbp->f_iosize = mp->mnt_stat.f_iosize;
394 lwkt_reltoken(&nmp->nm_token);
399 nfs_statvfs(struct mount *mp, struct statvfs *sbp, struct ucred *cred)
402 struct nfs_statfs *sfp;
403 struct nfsmount *nmp = VFSTONFS(mp);
404 thread_t td = curthread;
405 int error = 0, retattr;
407 struct nfsm_info info;
410 info.v3 = (nmp->nm_flag & NFSMNT_NFSV3);
411 lwkt_gettoken(&nmp->nm_token);
416 error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np, NULL);
418 lwkt_reltoken(&nmp->nm_token);
422 /* ignore the passed cred */
424 cred->cr_ngroups = 1;
425 if (info.v3 && (nmp->nm_state & NFSSTA_GOTFSINFO) == 0)
426 (void)nfs_fsinfo(nmp, vp, td);
427 nfsstats.rpccnt[NFSPROC_FSSTAT]++;
428 nfsm_reqhead(&info, vp, NFSPROC_FSSTAT, NFSX_FH(info.v3));
429 ERROROUT(nfsm_fhtom(&info, vp));
430 NEGKEEPOUT(nfsm_request(&info, vp, NFSPROC_FSSTAT, td, cred, &error));
432 ERROROUT(nfsm_postop_attr(&info, vp, &retattr,
433 NFS_LATTR_NOSHRINK));
436 if (info.mrep != NULL)
440 NULLOUT(sfp = nfsm_dissect(&info, NFSX_STATFS(info.v3)));
441 sbp->f_flag = nmp->nm_flag;
442 sbp->f_owner = nmp->nm_cred->cr_ruid;
445 sbp->f_bsize = NFS_FABLKSIZE;
446 sbp->f_frsize = NFS_FABLKSIZE;
447 sbp->f_blocks = (fxdr_hyper(&sfp->sf_tbytes) /
448 ((u_quad_t)NFS_FABLKSIZE));
449 sbp->f_bfree = (fxdr_hyper(&sfp->sf_fbytes) /
450 ((u_quad_t)NFS_FABLKSIZE));
451 sbp->f_bavail = (fxdr_hyper(&sfp->sf_abytes) /
452 ((u_quad_t)NFS_FABLKSIZE));
453 sbp->f_files = fxdr_hyper(&sfp->sf_tfiles);
454 sbp->f_ffree = fxdr_hyper(&sfp->sf_ffiles);
455 sbp->f_favail = fxdr_hyper(&sfp->sf_afiles);
457 sbp->f_bsize = fxdr_unsigned(int32_t, sfp->sf_bsize);
458 sbp->f_blocks = fxdr_unsigned(int32_t, sfp->sf_blocks);
459 sbp->f_bfree = fxdr_unsigned(int32_t, sfp->sf_bfree);
460 sbp->f_bavail = fxdr_unsigned(int32_t, sfp->sf_bavail);
465 sbp->f_syncreads = 0;
466 sbp->f_syncwrites = 0;
467 sbp->f_asyncreads = 0;
468 sbp->f_asyncwrites = 0;
469 sbp->f_type = mp->mnt_vfc->vfc_typenum;
476 lwkt_reltoken(&nmp->nm_token);
481 * nfs version 3 fsinfo rpc call
484 nfs_fsinfo(struct nfsmount *nmp, struct vnode *vp, struct thread *td)
486 struct nfsv3_fsinfo *fsp;
488 int error = 0, retattr;
490 struct nfsm_info info;
493 nfsstats.rpccnt[NFSPROC_FSINFO]++;
494 nfsm_reqhead(&info, vp, NFSPROC_FSINFO, NFSX_FH(1));
495 ERROROUT(nfsm_fhtom(&info, vp));
496 NEGKEEPOUT(nfsm_request(&info, vp, NFSPROC_FSINFO, td,
497 nfs_vpcred(vp, ND_READ), &error));
498 ERROROUT(nfsm_postop_attr(&info, vp, &retattr, NFS_LATTR_NOSHRINK));
500 NULLOUT(fsp = nfsm_dissect(&info, NFSX_V3FSINFO));
501 pref = fxdr_unsigned(u_int32_t, fsp->fs_wtpref);
502 if (pref < nmp->nm_wsize && pref >= NFS_FABLKSIZE)
503 nmp->nm_wsize = roundup2(pref, NFS_FABLKSIZE);
504 max = fxdr_unsigned(u_int32_t, fsp->fs_wtmax);
505 if (max < nmp->nm_wsize && max > 0) {
506 nmp->nm_wsize = rounddown2(max, NFS_FABLKSIZE);
507 if (nmp->nm_wsize == 0)
510 pref = fxdr_unsigned(u_int32_t, fsp->fs_rtpref);
511 if (pref < nmp->nm_rsize && pref >= NFS_FABLKSIZE)
512 nmp->nm_rsize = roundup2(pref, NFS_FABLKSIZE);
513 max = fxdr_unsigned(u_int32_t, fsp->fs_rtmax);
514 if (max < nmp->nm_rsize && max > 0) {
515 nmp->nm_rsize = rounddown2(max, NFS_FABLKSIZE);
516 if (nmp->nm_rsize == 0)
519 pref = fxdr_unsigned(u_int32_t, fsp->fs_dtpref);
520 if (pref < nmp->nm_readdirsize && pref >= NFS_DIRBLKSIZ)
521 nmp->nm_readdirsize = roundup2(pref, NFS_DIRBLKSIZ);
522 if (max < nmp->nm_readdirsize && max > 0) {
523 nmp->nm_readdirsize = rounddown2(max, NFS_DIRBLKSIZ);
524 if (nmp->nm_readdirsize == 0)
525 nmp->nm_readdirsize = max;
527 maxfsize = fxdr_hyper(&fsp->fs_maxfilesize);
528 if (maxfsize > 0 && maxfsize < nmp->nm_maxfilesize)
529 nmp->nm_maxfilesize = maxfsize;
530 nmp->nm_state |= NFSSTA_GOTFSINFO;
533 * Use the smaller of rsize/wsize for the biosize.
535 if (nmp->nm_rsize < nmp->nm_wsize)
536 nmp->nm_mountp->mnt_stat.f_iosize = nmp->nm_rsize;
538 nmp->nm_mountp->mnt_stat.f_iosize = nmp->nm_wsize;
547 * Mount a remote root fs via. nfs. This depends on the info in the
548 * nfs_diskless structure that has been filled in properly by some primary
550 * It goes something like this:
551 * - do enough of "ifconfig" by calling ifioctl() so that the system
552 * can talk to the server
553 * - If nfs_diskless.mygateway is filled in, use that address as
555 * - build the rootfs mount point and call mountnfs() to do the rest.
558 nfs_mountroot(struct mount *mp)
560 struct mount *swap_mp;
561 struct nfsv3_diskless *nd = &nfsv3_diskless;
564 struct thread *td = curthread; /* XXX */
567 char buf[128], addr[INET_ADDRSTRLEN];
569 #if defined(BOOTP_NFSROOT) && defined(BOOTP)
570 bootpc_init(); /* use bootp to get nfs_diskless filled in */
574 * XXX time must be non-zero when we init the interface or else
575 * the arp code will wedge...
577 while (mycpu->gd_time_seconds == 0)
578 tsleep(mycpu, 0, "arpkludge", 10);
581 * The boot code may have passed us a diskless structure.
583 kprintf("DISKLESS %d\n", nfs_diskless_valid);
584 if (nfs_diskless_valid == 1)
585 nfs_convert_diskless();
590 nd->root_args.flags |= NFSMNT_NFSV3 | NFSMNT_RDIRPLUS;
591 nd->swap_args.flags |= NFSMNT_NFSV3;
593 #define SINP(sockaddr) ((struct sockaddr_in *)(sockaddr))
594 kprintf("nfs_mountroot: interface %s ip %s",
596 kinet_ntoa(SINP(&nd->myif.ifra_addr)->sin_addr, addr));
598 kinet_ntoa(SINP(&nd->myif.ifra_broadaddr)->sin_addr, addr));
599 kprintf(" mask %s\n",
600 kinet_ntoa(SINP(&nd->myif.ifra_mask)->sin_addr, addr));
604 * XXX splnet, so networks will receive...
609 * BOOTP does not necessarily have to be compiled into the kernel
610 * for an NFS root to work. If we inherited the network
611 * configuration for PXEBOOT then pxe_setup_nfsdiskless() has figured
612 * out our interface for us and all we need to do is ifconfig the
613 * interface. We only do this if the interface has not already been
614 * ifconfig'd by e.g. BOOTP.
616 error = socreate(nd->myif.ifra_addr.sa_family, &so, SOCK_DGRAM, 0, td);
618 panic("nfs_mountroot: socreate(%04x): %d",
619 nd->myif.ifra_addr.sa_family, error);
622 error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, proc0.p_ucred);
624 panic("nfs_mountroot: SIOCAIFADDR: %d", error);
626 soclose(so, FNONBLOCK);
629 * If the gateway field is filled in, set it as the default route.
631 if (nd->mygateway.sin_len != 0) {
632 struct sockaddr_in mask, sin;
634 bzero((caddr_t)&mask, sizeof(mask));
636 sin.sin_family = AF_INET;
637 sin.sin_len = sizeof(sin);
638 kprintf("nfs_mountroot: gateway %s\n",
639 kinet_ntoa(nd->mygateway.sin_addr, addr));
640 error = rtrequest_global(RTM_ADD, (struct sockaddr *)&sin,
641 (struct sockaddr *)&nd->mygateway,
642 (struct sockaddr *)&mask,
643 RTF_UP | RTF_GATEWAY);
645 kprintf("nfs_mountroot: unable to set gateway, error %d, continuing anyway\n", error);
649 * Create the rootfs mount point.
651 nd->root_args.fh = nd->root_fh;
652 nd->root_args.fhsize = nd->root_fhsize;
653 l = ntohl(nd->root_saddr.sin_addr.s_addr);
654 ksnprintf(buf, sizeof(buf), "%ld.%ld.%ld.%ld:%s",
655 (l >> 24) & 0xff, (l >> 16) & 0xff,
656 (l >> 8) & 0xff, (l >> 0) & 0xff,nd->root_hostnam);
657 kprintf("NFS_ROOT: %s\n",buf);
658 error = nfs_mountdiskless(buf, "/", MNT_RDONLY, &nd->root_saddr,
659 &nd->root_args, td, &vp, &mp);
661 mp->mnt_vfc->vfc_refcount--;
667 if (nd->swap_nblks) {
669 /* Convert to DEV_BSIZE instead of Kilobyte */
673 * Create a fake mount point just for the swap vnode so that the
674 * swap file can be on a different server from the rootfs.
676 nd->swap_args.fh = nd->swap_fh;
677 nd->swap_args.fhsize = nd->swap_fhsize;
678 l = ntohl(nd->swap_saddr.sin_addr.s_addr);
679 ksnprintf(buf, sizeof(buf), "%ld.%ld.%ld.%ld:%s",
680 (l >> 24) & 0xff, (l >> 16) & 0xff,
681 (l >> 8) & 0xff, (l >> 0) & 0xff,nd->swap_hostnam);
682 kprintf("NFS SWAP: %s\n",buf);
683 vp = NULL; /* avoid gcc warnings */
684 error = nfs_mountdiskless(buf, "/swap", 0, &nd->swap_saddr,
685 &nd->swap_args, td, &vp, &swap_mp);
692 VTONFS(vp)->n_size = VTONFS(vp)->n_vattr.va_size =
693 nd->swap_nblks * DEV_BSIZE ;
696 * Since the swap file is not the root dir of a file system,
697 * hack it to a regular file.
699 vclrflags(vp, VROOT);
701 nfs_setvtype(vp, VREG);
702 swaponvp(td, vp, nd->swap_nblks);
705 mp->mnt_flag |= MNT_ROOTFS;
708 * This is not really an nfs issue, but it is much easier to
709 * set hostname here and then let the "/etc/rc.xxx" files
710 * mount the right /var based upon its preset value.
712 bcopy(nd->my_hostnam, hostname, MAXHOSTNAMELEN);
713 hostname[MAXHOSTNAMELEN - 1] = '\0';
714 for (i = 0; i < MAXHOSTNAMELEN; i++)
715 if (hostname[i] == '\0')
717 inittodr(ntohl(nd->root_time));
723 * Internal version of mount system call for diskless setup.
726 nfs_mountdiskless(char *path, char *which, int mountflag,
727 struct sockaddr_in *sin, struct nfs_args *args, struct thread *td,
728 struct vnode **vpp, struct mount **mpp)
731 struct sockaddr *nam;
738 if ((error = vfs_rootmountalloc("nfs", path, &mp)) != 0) {
739 kprintf("nfs_mountroot: NFS not configured");
744 mp->mnt_kern_flag = 0;
745 mp->mnt_flag = mountflag;
746 nam = dup_sockaddr((struct sockaddr *)sin);
748 #if defined(BOOTP) || defined(NFS_ROOT)
749 if (args->fhsize == 0) {
752 kprintf("NFS_ROOT: No FH passed from loader, attempting "
754 while (*xpath && *xpath != ':')
759 error = md_mount(sin, xpath, args->fh, &args->fhsize, args, td);
761 kprintf("failed error %d.\n", error);
764 kprintf("success!\n");
768 if ((error = mountnfs(args, mp, nam, which, path, vpp)) != 0) {
769 #if defined(BOOTP) || defined(NFS_ROOT)
772 kprintf("nfs_mountroot: mount %s on %s: %d", path, which, error);
773 mp->mnt_vfc->vfc_refcount--;
776 kfree(nam, M_SONAME);
784 nfs_decode_args(struct nfsmount *nmp, struct nfs_args *argp)
791 * Silently clear NFSMNT_NOCONN if it's a TCP mount, it makes
792 * no sense in that context.
794 if (nmp->nm_sotype == SOCK_STREAM) {
795 nmp->nm_flag &= ~NFSMNT_NOCONN;
796 argp->flags &= ~NFSMNT_NOCONN;
800 * readdirplus is NFSv3 only.
802 if ((argp->flags & NFSMNT_NFSV3) == 0) {
803 nmp->nm_flag &= ~NFSMNT_RDIRPLUS;
804 argp->flags &= ~NFSMNT_RDIRPLUS;
808 * Re-bind if rsrvd port flag has changed
810 adjsock = (nmp->nm_flag & NFSMNT_RESVPORT) !=
811 (argp->flags & NFSMNT_RESVPORT);
813 /* Update flags atomically. Don't change the lock bits. */
814 nmp->nm_flag = argp->flags | nmp->nm_flag;
817 if ((argp->flags & NFSMNT_TIMEO) && argp->timeo > 0) {
818 nmp->nm_timeo = (argp->timeo * NFS_HZ + 5) / 10;
819 if (nmp->nm_timeo < NFS_MINTIMEO)
820 nmp->nm_timeo = NFS_MINTIMEO;
821 else if (nmp->nm_timeo > NFS_MAXTIMEO)
822 nmp->nm_timeo = NFS_MAXTIMEO;
825 if ((argp->flags & NFSMNT_RETRANS) && argp->retrans > 1) {
826 nmp->nm_retry = argp->retrans;
827 if (nmp->nm_retry > NFS_MAXREXMIT)
828 nmp->nm_retry = NFS_MAXREXMIT;
832 * These parameters effect the buffer cache and cannot be changed
833 * once we've successfully mounted.
835 if ((nmp->nm_state & NFSSTA_GOTFSINFO) == 0) {
836 maxio = nfs_iosize(argp->flags & NFSMNT_NFSV3, nmp->nm_sotype);
838 if ((argp->flags & NFSMNT_WSIZE) && argp->wsize > 0) {
839 nmp->nm_wsize = argp->wsize;
840 /* Round down to multiple of blocksize */
841 nmp->nm_wsize &= ~(NFS_FABLKSIZE - 1);
842 if (nmp->nm_wsize <= 0)
843 nmp->nm_wsize = NFS_FABLKSIZE;
845 if (nmp->nm_wsize > maxio)
846 nmp->nm_wsize = maxio;
847 if (nmp->nm_wsize > MAXBSIZE)
848 nmp->nm_wsize = MAXBSIZE;
850 if ((argp->flags & NFSMNT_RSIZE) && argp->rsize > 0) {
851 nmp->nm_rsize = argp->rsize;
852 /* Round down to multiple of blocksize */
853 nmp->nm_rsize &= ~(NFS_FABLKSIZE - 1);
854 if (nmp->nm_rsize <= 0)
855 nmp->nm_rsize = NFS_FABLKSIZE;
857 if (nmp->nm_rsize > maxio)
858 nmp->nm_rsize = maxio;
859 if (nmp->nm_rsize > MAXBSIZE)
860 nmp->nm_rsize = MAXBSIZE;
862 if ((argp->flags & NFSMNT_READDIRSIZE) &&
863 argp->readdirsize > 0) {
864 nmp->nm_readdirsize = argp->readdirsize;
866 if (nmp->nm_readdirsize > maxio)
867 nmp->nm_readdirsize = maxio;
868 if (nmp->nm_readdirsize > nmp->nm_rsize)
869 nmp->nm_readdirsize = nmp->nm_rsize;
872 if ((argp->flags & NFSMNT_ACREGMIN) && argp->acregmin >= 0)
873 nmp->nm_acregmin = argp->acregmin;
875 nmp->nm_acregmin = NFS_MINATTRTIMO;
876 if ((argp->flags & NFSMNT_ACREGMAX) && argp->acregmax >= 0)
877 nmp->nm_acregmax = argp->acregmax;
879 nmp->nm_acregmax = NFS_MAXATTRTIMO;
880 if ((argp->flags & NFSMNT_ACDIRMIN) && argp->acdirmin >= 0)
881 nmp->nm_acdirmin = argp->acdirmin;
883 nmp->nm_acdirmin = NFS_MINDIRATTRTIMO;
884 if ((argp->flags & NFSMNT_ACDIRMAX) && argp->acdirmax >= 0)
885 nmp->nm_acdirmax = argp->acdirmax;
887 nmp->nm_acdirmax = NFS_MAXDIRATTRTIMO;
888 if (nmp->nm_acdirmin > nmp->nm_acdirmax)
889 nmp->nm_acdirmin = nmp->nm_acdirmax;
890 if (nmp->nm_acregmin > nmp->nm_acregmax)
891 nmp->nm_acregmin = nmp->nm_acregmax;
893 if ((argp->flags & NFSMNT_MAXGRPS) && argp->maxgrouplist >= 0) {
894 if (argp->maxgrouplist <= NFS_MAXGRPS)
895 nmp->nm_numgrps = argp->maxgrouplist;
897 nmp->nm_numgrps = NFS_MAXGRPS;
899 if ((argp->flags & NFSMNT_READAHEAD) && argp->readahead >= 0) {
900 if (argp->readahead <= NFS_MAXRAHEAD)
901 nmp->nm_readahead = argp->readahead;
903 nmp->nm_readahead = NFS_MAXRAHEAD;
905 if ((argp->flags & NFSMNT_DEADTHRESH) && argp->deadthresh >= 1) {
906 if (argp->deadthresh <= NFS_NEVERDEAD)
907 nmp->nm_deadthresh = argp->deadthresh;
909 nmp->nm_deadthresh = NFS_NEVERDEAD;
912 if (nmp->nm_so && adjsock) {
913 nfs_safedisconnect(nmp);
914 if (nmp->nm_sotype == SOCK_DGRAM)
915 while (nfs_connect(nmp, NULL)) {
916 kprintf("nfs_args: retrying connect\n");
917 (void) tsleep((caddr_t)&lbolt, 0, "nfscon", 0);
926 * It seems a bit dumb to copyinstr() the host and path here and then
927 * bcopy() them in mountnfs(), but I wanted to detect errors before
928 * doing the sockargs() call because sockargs() allocates an mbuf and
929 * an error after that means that I have to release the mbuf.
933 nfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred)
936 struct nfs_args args;
937 struct sockaddr *nam;
939 char pth[MNAMELEN], hst[MNAMELEN];
941 u_char nfh[NFSX_V3FHMAX];
947 error = copyin(data, (caddr_t)&args, sizeof (struct nfs_args));
950 if (args.version != NFS_ARGSVERSION) {
951 #ifdef COMPAT_PRELITE2
953 * If the argument version is unknown, then assume the
954 * caller is a pre-lite2 4.4BSD client and convert its
957 struct onfs_args oargs;
958 error = copyin(data, (caddr_t)&oargs, sizeof (struct onfs_args));
961 nfs_convert_oargs(&args,&oargs);
962 #else /* !COMPAT_PRELITE2 */
963 return (EPROGMISMATCH);
964 #endif /* COMPAT_PRELITE2 */
966 if (mp->mnt_flag & MNT_UPDATE) {
967 struct nfsmount *nmp = VFSTONFS(mp);
972 * When doing an update, we can't change from or to
973 * v3, or change cookie translation, or rsize or wsize.
975 args.flags &= ~(NFSMNT_NFSV3 | NFSMNT_RSIZE | NFSMNT_WSIZE);
976 args.flags |= nmp->nm_flag & (NFSMNT_NFSV3);
977 nfs_decode_args(nmp, &args);
982 * Make the nfs_ip_paranoia sysctl serve as the default connection
983 * or no-connection mode for those protocols that support
984 * no-connection mode (the flag will be cleared later for protocols
985 * that do not support no-connection mode). This will allow a client
986 * to receive replies from a different IP then the request was
987 * sent to. Note: default value for nfs_ip_paranoia is 1 (paranoid),
990 if (nfs_ip_paranoia == 0)
991 args.flags |= NFSMNT_NOCONN;
992 if (args.fhsize < 0 || args.fhsize > NFSX_V3FHMAX)
994 error = copyin((caddr_t)args.fh, (caddr_t)nfh, args.fhsize);
997 error = copyinstr(path, pth, MNAMELEN-1, &len);
1000 bzero(&pth[len], MNAMELEN - len);
1001 error = copyinstr(args.hostname, hst, MNAMELEN-1, &len);
1004 bzero(&hst[len], MNAMELEN - len);
1005 /* sockargs() call must be after above copyin() calls */
1006 error = getsockaddr(&nam, (caddr_t)args.addr, args.addrlen);
1010 error = mountnfs(&args, mp, nam, pth, hst, &vp);
1015 * Common code for mount and mountroot
1018 mountnfs(struct nfs_args *argp, struct mount *mp, struct sockaddr *nam,
1019 char *pth, char *hst, struct vnode **vpp)
1021 struct nfsmount *nmp;
1027 if (mp->mnt_flag & MNT_UPDATE) {
1029 /* update paths, file handles, etc, here XXX */
1030 kfree(nam, M_SONAME);
1033 nmp = objcache_get(nfsmount_objcache, M_WAITOK);
1034 bzero((caddr_t)nmp, sizeof (struct nfsmount));
1035 mtx_init_flags(&nmp->nm_rxlock, "nfsrx", MTXF_NOCOLLSTATS);
1036 mtx_init_flags(&nmp->nm_txlock, "nfstx", MTXF_NOCOLLSTATS);
1037 TAILQ_INIT(&nmp->nm_uidlruhead);
1038 TAILQ_INIT(&nmp->nm_bioq);
1039 TAILQ_INIT(&nmp->nm_reqq);
1040 TAILQ_INIT(&nmp->nm_reqtxq);
1041 TAILQ_INIT(&nmp->nm_reqrxq);
1042 mp->mnt_data = (qaddr_t)nmp;
1043 lwkt_token_init(&nmp->nm_token, "nfs_token");
1046 nmp->nm_mountp = mp;
1047 mp->mnt_kern_flag |= MNTK_ALL_MPSAFE;
1048 mp->mnt_kern_flag |= MNTK_THR_SYNC; /* new vsyncscan semantics */
1050 lwkt_gettoken(&nmp->nm_token);
1053 * V2 can only handle 32 bit filesizes. A 4GB-1 limit may be too
1054 * high, depending on whether we end up with negative offsets in
1055 * the client or server somewhere. 2GB-1 may be safer.
1057 * For V3, nfs_fsinfo will adjust this as necessary. Assume maximum
1058 * that we can handle until we find out otherwise. Note that seek
1059 * offsets are signed.
1061 if ((argp->flags & NFSMNT_NFSV3) == 0)
1062 nmp->nm_maxfilesize = 0xffffffffLL;
1064 nmp->nm_maxfilesize = 0x7fffffffffffffffLL;
1066 nmp->nm_timeo = NFS_TIMEO;
1067 nmp->nm_retry = NFS_RETRANS;
1068 nmp->nm_wsize = nfs_iosize(argp->flags & NFSMNT_NFSV3, argp->sotype);
1069 nmp->nm_rsize = nmp->nm_wsize;
1070 nmp->nm_readdirsize = NFS_READDIRSIZE;
1071 nmp->nm_numgrps = NFS_MAXGRPS;
1072 nmp->nm_readahead = NFS_DEFRAHEAD;
1073 nmp->nm_deadthresh = NFS_DEADTHRESH;
1074 nmp->nm_fhsize = argp->fhsize;
1075 bcopy((caddr_t)argp->fh, (caddr_t)nmp->nm_fh, argp->fhsize);
1076 bcopy(hst, mp->mnt_stat.f_mntfromname, MNAMELEN);
1078 /* Set up the sockets and per-host congestion */
1079 nmp->nm_sotype = argp->sotype;
1080 nmp->nm_soproto = argp->proto;
1081 nmp->nm_cred = crhold(proc0.p_ucred);
1083 nfs_decode_args(nmp, argp);
1086 * For Connection based sockets (TCP,...) defer the connect until
1087 * the first request, in case the server is not responding.
1089 if (nmp->nm_sotype == SOCK_DGRAM &&
1090 (error = nfs_connect(nmp, NULL)))
1094 * This is silly, but it has to be set so that vinifod() works.
1095 * We do not want to do an nfs_statfs() here since we can get
1096 * stuck on a dead server and we are holding a lock on the mount
1099 mp->mnt_stat.f_iosize =
1100 nfs_iosize(nmp->nm_flag & NFSMNT_NFSV3, nmp->nm_sotype);
1103 * Install vop_ops for our vnops
1105 vfs_add_vnodeops(mp, &nfsv2_vnode_vops, &mp->mnt_vn_norm_ops);
1106 vfs_add_vnodeops(mp, &nfsv2_spec_vops, &mp->mnt_vn_spec_ops);
1107 vfs_add_vnodeops(mp, &nfsv2_fifo_vops, &mp->mnt_vn_fifo_ops);
1110 * A reference count is needed on the nfsnode representing the
1111 * remote root. If this object is not persistent, then backward
1112 * traversals of the mount point (i.e. "..") will not work if
1113 * the nfsnode gets flushed out of the cache. Ufs does not have
1114 * this problem, because one can identify root inodes by their
1115 * number == UFS_ROOTINO (2).
1117 error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np, NULL);
1123 * Retrieval of mountpoint attributes is delayed until nfs_rot
1124 * or nfs_statfs are first called. This will happen either when
1125 * we first traverse the mount point or if somebody does a df(1).
1127 * NFSSTA_GOTFSINFO is used to flag if we have successfully
1128 * retrieved mountpoint attributes. In the case of NFSv3 we
1129 * also flag static fsinfo.
1132 (*vpp)->v_type = VNON;
1135 * Lose the lock but keep the ref.
1138 lwkt_gettoken(&nfs_token);
1139 TAILQ_INSERT_TAIL(&nfs_mountq, nmp, nm_entry);
1140 lwkt_reltoken(&nfs_token);
1159 * Start the reader and writer threads.
1161 lwkt_create(nfssvc_iod_reader, nmp, &nmp->nm_rxthread,
1162 NULL, 0, rxcpu, "nfsiod_rx");
1163 lwkt_create(nfssvc_iod_writer, nmp, &nmp->nm_txthread,
1164 NULL, 0, txcpu, "nfsiod_tx");
1165 lwkt_reltoken(&nmp->nm_token);
1168 nfs_disconnect(nmp);
1169 lwkt_reltoken(&nmp->nm_token);
1170 nfs_free_mount(nmp);
1175 * unmount system call
1178 nfs_unmount(struct mount *mp, int mntflags)
1180 struct nfsmount *nmp;
1181 int error, flags = 0;
1184 lwkt_gettoken(&nmp->nm_token);
1185 if (mntflags & MNT_FORCE) {
1186 flags |= FORCECLOSE;
1187 nmp->nm_flag |= NFSMNT_FORCE;
1191 * Goes something like this..
1192 * - Call vflush() to clear out vnodes for this file system
1193 * - Close the socket
1194 * - Free up the data structures
1196 /* In the forced case, cancel any outstanding requests. */
1197 if (flags & FORCECLOSE) {
1198 error = nfs_nmcancelreqs(nmp);
1200 kprintf("NFS: %s: Unable to cancel all requests\n",
1201 mp->mnt_stat.f_mntfromname);
1202 /* continue anyway */
1207 * Must handshake with nfs_clientd() if it is active. XXX
1209 nmp->nm_state |= NFSSTA_DISMINPROG;
1212 * We hold 1 extra ref on the root vnode; see comment in mountnfs().
1214 * If this doesn't work and we are doing a forced unmount we continue
1217 error = vflush(mp, 1, flags);
1219 nmp->nm_state &= ~NFSSTA_DISMINPROG;
1220 if ((flags & FORCECLOSE) == 0) {
1221 lwkt_reltoken(&nmp->nm_token);
1227 * We are now committed to the unmount.
1228 * For NQNFS, let the server daemon free the nfsmount structure.
1230 if (nmp->nm_flag & NFSMNT_KERB)
1231 nmp->nm_state |= NFSSTA_DISMNT;
1232 nfssvc_iod_stop1(nmp);
1233 nfs_disconnect(nmp);
1234 nfssvc_iod_stop2(nmp);
1236 lwkt_gettoken(&nfs_token);
1237 TAILQ_REMOVE(&nfs_mountq, nmp, nm_entry);
1238 lwkt_reltoken(&nfs_token);
1240 lwkt_reltoken(&nmp->nm_token);
1242 if ((nmp->nm_flag & NFSMNT_KERB) == 0) {
1243 nfs_free_mount(nmp);
1249 nfs_free_mount(struct nfsmount *nmp)
1252 crfree(nmp->nm_cred);
1253 nmp->nm_cred = NULL;
1256 kfree(nmp->nm_nam, M_SONAME);
1259 objcache_put(nfsmount_objcache, nmp);
1263 * Return root of a filesystem
1266 nfs_root(struct mount *mp, struct vnode **vpp)
1269 struct nfsmount *nmp;
1275 lwkt_gettoken(&nmp->nm_token);
1276 error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np, NULL);
1278 lwkt_reltoken(&nmp->nm_token);
1284 * Get transfer parameters and root vnode attributes
1286 * NOTE: nfs_fsinfo() is expected to override the default
1289 if ((nmp->nm_state & NFSSTA_GOTFSINFO) == 0) {
1290 if (nmp->nm_flag & NFSMNT_NFSV3) {
1291 mp->mnt_stat.f_iosize = nfs_iosize(1, nmp->nm_sotype);
1292 error = nfs_fsinfo(nmp, vp, curthread);
1294 if ((error = VOP_GETATTR(vp, &attrs)) == 0)
1295 nmp->nm_state |= NFSSTA_GOTFSINFO;
1300 * The root vnode is usually cached by the namecache so do not
1301 * try to avoid going over the wire even if we have previous
1302 * information cached. A stale NFS mount can loop
1303 * forever resolving the root vnode if we return no-error when
1304 * there is in fact an error.
1306 np->n_attrstamp = 0;
1307 error = VOP_GETATTR(vp, &attrs);
1309 if (vp->v_type == VNON)
1310 nfs_setvtype(vp, VDIR);
1311 vsetflags(vp, VROOT);
1316 lwkt_reltoken(&nmp->nm_token);
1326 static int nfs_sync_scan2(struct mount *mp, struct vnode *vp, void *data);
1329 * Flush out the buffer cache
1333 nfs_sync(struct mount *mp, int waitfor)
1335 struct nfsmount *nmp = VFSTONFS(mp);
1336 struct scaninfo scaninfo;
1339 scaninfo.rescan = 1;
1340 scaninfo.waitfor = waitfor;
1341 scaninfo.allerror = 0;
1344 * Force stale buffer cache information to be flushed.
1346 lwkt_gettoken(&nmp->nm_token);
1348 if ((waitfor & MNT_LAZY) == 0) {
1349 while (error == 0 && scaninfo.rescan) {
1350 scaninfo.rescan = 0;
1351 error = vsyncscan(mp, VMSC_GETVP,
1352 nfs_sync_scan2, &scaninfo);
1355 lwkt_reltoken(&nmp->nm_token);
1360 nfs_sync_scan2(struct mount *mp, struct vnode *vp, void *data)
1362 struct scaninfo *info = data;
1365 if (vp->v_type == VNON || vp->v_type == VBAD)
1367 error = VOP_FSYNC(vp, info->waitfor, 0);
1369 info->allerror = error;