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. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)nfs_vfsops.c 8.12 (Berkeley) 5/20/95
37 * $FreeBSD: src/sys/nfs/nfs_vfsops.c,v 1.91.2.7 2003/01/27 20:04:08 dillon Exp $
38 * $DragonFly: src/sys/vfs/nfs/nfs_vfsops.c,v 1.54 2008/07/31 20:23:40 swildner Exp $
41 #include "opt_bootp.h"
42 #include "opt_nfsroot.h"
44 #include <sys/param.h>
45 #include <sys/sockio.h>
47 #include <sys/vnode.h>
48 #include <sys/fcntl.h>
49 #include <sys/kernel.h>
50 #include <sys/sysctl.h>
51 #include <sys/malloc.h>
52 #include <sys/mount.h>
54 #include <sys/socket.h>
55 #include <sys/socketvar.h>
56 #include <sys/systm.h>
57 #include <sys/objcache.h>
60 #include <vm/vm_extern.h>
63 #include <net/route.h>
64 #include <netinet/in.h>
66 #include <sys/thread2.h>
67 #include <sys/mutex2.h>
75 #include "nfsm_subs.h"
76 #include "nfsdiskless.h"
77 #include "nfsmountrpc.h"
79 extern int nfs_mountroot(struct mount *mp);
80 extern void bootpc_init(void);
82 extern struct vop_ops nfsv2_vnode_vops;
83 extern struct vop_ops nfsv2_fifo_vops;
84 extern struct vop_ops nfsv2_spec_vops;
86 MALLOC_DEFINE(M_NFSREQ, "NFS req", "NFS request header");
87 MALLOC_DEFINE(M_NFSBIGFH, "NFSV3 bigfh", "NFS version 3 file handle");
88 MALLOC_DEFINE(M_NFSD, "NFS daemon", "Nfs server daemon structure");
89 MALLOC_DEFINE(M_NFSDIROFF, "NFSV3 diroff", "NFS directory offset data");
90 MALLOC_DEFINE(M_NFSRVDESC, "NFSV3 srvdesc", "NFS server socket descriptor");
91 MALLOC_DEFINE(M_NFSUID, "NFS uid", "Nfs uid mapping structure");
92 MALLOC_DEFINE(M_NFSHASH, "NFS hash", "NFS hash tables");
94 struct objcache *nfsmount_objcache;
96 struct nfsstats nfsstats;
97 SYSCTL_NODE(_vfs, OID_AUTO, nfs, CTLFLAG_RW, 0, "NFS filesystem");
98 SYSCTL_STRUCT(_vfs_nfs, NFS_NFSSTATS, nfsstats, CTLFLAG_RD, &nfsstats, nfsstats,
99 "Nfs stats structure");
100 static int nfs_ip_paranoia = 1;
101 SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs_ip_paranoia, CTLFLAG_RW, &nfs_ip_paranoia, 0,
102 "Enable no-connection mode for protocols that support no-connection mode");
105 SYSCTL_INT(_vfs_nfs, OID_AUTO, debug, CTLFLAG_RW, &nfs_debug, 0, "");
109 * Tunable to determine the Read/Write unit size. Maximum value
110 * is NFS_MAXDATA. We also default to NFS_MAXDATA.
112 static int nfs_io_size = NFS_MAXDATA;
113 SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs_io_size, CTLFLAG_RW,
114 &nfs_io_size, 0, "NFS optimal I/O unit size");
116 static void nfs_decode_args (struct nfsmount *nmp,
117 struct nfs_args *argp);
118 static int mountnfs (struct nfs_args *,struct mount *,
119 struct sockaddr *,char *,char *,struct vnode **);
120 static int nfs_mount ( struct mount *mp, char *path, caddr_t data,
122 static int nfs_unmount ( struct mount *mp, int mntflags);
123 static int nfs_root ( struct mount *mp, struct vnode **vpp);
124 static int nfs_statfs ( struct mount *mp, struct statfs *sbp,
126 static int nfs_statvfs(struct mount *mp, struct statvfs *sbp,
128 static int nfs_sync ( struct mount *mp, int waitfor);
131 * nfs vfs operations.
133 static struct vfsops nfs_vfsops = {
134 .vfs_mount = nfs_mount,
135 .vfs_unmount = nfs_unmount,
136 .vfs_root = nfs_root,
137 .vfs_statfs = nfs_statfs,
138 .vfs_statvfs = nfs_statvfs,
139 .vfs_sync = nfs_sync,
140 .vfs_init = nfs_init,
141 .vfs_uninit = nfs_uninit
143 VFS_SET(nfs_vfsops, nfs, VFCF_NETWORK);
144 MODULE_VERSION(nfs, 1);
147 * This structure must be filled in by a primary bootstrap or bootstrap
148 * server for a diskless/dataless machine. It is initialized below just
149 * to ensure that it is allocated to initialized data (.data not .bss).
151 struct nfs_diskless nfs_diskless = { { { 0 } } };
152 struct nfsv3_diskless nfsv3_diskless = { { { 0 } } };
153 int nfs_diskless_valid = 0;
155 SYSCTL_INT(_vfs_nfs, OID_AUTO, diskless_valid, CTLFLAG_RD,
156 &nfs_diskless_valid, 0,
157 "NFS diskless params were obtained");
159 SYSCTL_STRING(_vfs_nfs, OID_AUTO, diskless_rootpath, CTLFLAG_RD,
160 nfsv3_diskless.root_hostnam, 0,
161 "Host name for mount point");
163 SYSCTL_OPAQUE(_vfs_nfs, OID_AUTO, diskless_rootaddr, CTLFLAG_RD,
164 &nfsv3_diskless.root_saddr, sizeof nfsv3_diskless.root_saddr,
165 "%Ssockaddr_in", "Address of root server");
167 SYSCTL_STRING(_vfs_nfs, OID_AUTO, diskless_swappath, CTLFLAG_RD,
168 nfsv3_diskless.swap_hostnam, 0,
169 "Host name for mount ppoint");
171 SYSCTL_OPAQUE(_vfs_nfs, OID_AUTO, diskless_swapaddr, CTLFLAG_RD,
172 &nfsv3_diskless.swap_saddr, sizeof nfsv3_diskless.swap_saddr,
173 "%Ssockaddr_in", "Address of swap server");
176 void nfsargs_ntoh (struct nfs_args *);
177 static int nfs_mountdiskless (char *, char *, int,
178 struct sockaddr_in *, struct nfs_args *,
179 struct thread *, struct vnode **,
181 static void nfs_convert_diskless (void);
182 static void nfs_convert_oargs (struct nfs_args *args,
183 struct onfs_args *oargs);
186 * Calculate the buffer I/O block size to use. The maximum V2 block size
187 * is typically 8K, the maximum datagram size is typically 16K, and the
188 * maximum V3 block size is typically 32K. The buffer cache tends to work
189 * best with 16K blocks but we allow 32K for TCP connections.
191 * We force the block size to be at least a page for buffer cache efficiency.
194 nfs_iosize(int v3, int sotype)
200 if (sotype == SOCK_STREAM)
203 iomax = NFS_MAXDGRAMDATA;
205 iomax = NFS_V2MAXDATA;
207 if ((iosize = nfs_io_size) > iomax)
209 if (iosize < PAGE_SIZE)
213 * This is an aweful hack but until the buffer cache is rewritten
214 * we need it. The problem is that when you combine write() with
215 * mmap() the vm_page->valid bits can become weird looking
216 * (e.g. 0xfc). This occurs because NFS uses piecemeal buffers
217 * at the file EOF. To solve the problem the BIO system needs to
218 * be guarenteed that the NFS iosize for regular files will be a
219 * multiple of PAGE_SIZE so it can invalidate the whole page
220 * rather then just the piece of it owned by the buffer when
221 * NFS does vinvalbuf() calls.
223 if (iosize & PAGE_MASK)
224 iosize = (iosize & ~PAGE_MASK) + PAGE_SIZE;
229 nfs_convert_oargs(struct nfs_args *args, struct onfs_args *oargs)
231 args->version = NFS_ARGSVERSION;
232 args->addr = oargs->addr;
233 args->addrlen = oargs->addrlen;
234 args->sotype = oargs->sotype;
235 args->proto = oargs->proto;
236 args->fh = oargs->fh;
237 args->fhsize = oargs->fhsize;
238 args->flags = oargs->flags;
239 args->wsize = oargs->wsize;
240 args->rsize = oargs->rsize;
241 args->readdirsize = oargs->readdirsize;
242 args->timeo = oargs->timeo;
243 args->retrans = oargs->retrans;
244 args->maxgrouplist = oargs->maxgrouplist;
245 args->readahead = oargs->readahead;
246 args->deadthresh = oargs->deadthresh;
247 args->hostname = oargs->hostname;
251 nfs_convert_diskless(void)
255 bcopy(&nfs_diskless.myif, &nfsv3_diskless.myif,
256 sizeof(struct ifaliasreq));
257 bcopy(&nfs_diskless.mygateway, &nfsv3_diskless.mygateway,
258 sizeof(struct sockaddr_in));
259 nfs_convert_oargs(&nfsv3_diskless.swap_args, &nfs_diskless.swap_args);
262 * Copy the NFS handle passed from the diskless code.
264 * XXX CURRENTLY DISABLED - bootp passes us a NFSv2 handle which
265 * will fail utterly with HAMMER due to limitations with NFSv2
268 bcopy(nfs_diskless.swap_fh, nfsv3_diskless.swap_fh, NFSX_V2FH);
269 nfsv3_diskless.swap_fhsize = NFSX_V2FH;
270 for (i = NFSX_V2FH - 1; i >= 0; --i) {
271 if (nfs_diskless.swap_fh[i])
275 nfsv3_diskless.swap_fhsize = 0;
276 nfsv3_diskless.swap_fhsize = 0; /* FORCE DISABLE */
278 bcopy(&nfs_diskless.swap_saddr,&nfsv3_diskless.swap_saddr,
279 sizeof(struct sockaddr_in));
280 bcopy(nfs_diskless.swap_hostnam,nfsv3_diskless.swap_hostnam, MNAMELEN);
281 nfsv3_diskless.swap_nblks = nfs_diskless.swap_nblks;
282 bcopy(&nfs_diskless.swap_ucred, &nfsv3_diskless.swap_ucred,
283 sizeof(struct ucred));
284 nfs_convert_oargs(&nfsv3_diskless.root_args, &nfs_diskless.root_args);
287 * Copy the NFS handle passed from the diskless code.
289 * XXX CURRENTLY DISABLED - bootp passes us a NFSv2 handle which
290 * will fail utterly with HAMMER due to limitations with NFSv2
293 bcopy(nfs_diskless.root_fh, nfsv3_diskless.root_fh, NFSX_V2FH);
294 nfsv3_diskless.root_fhsize = NFSX_V2FH;
295 for (i = NFSX_V2FH - 1; i >= 0; --i) {
296 if (nfs_diskless.root_fh[i])
300 nfsv3_diskless.root_fhsize = 0;
301 nfsv3_diskless.root_fhsize = 0; /* FORCE DISABLE */
303 bcopy(&nfs_diskless.root_saddr,&nfsv3_diskless.root_saddr,
304 sizeof(struct sockaddr_in));
305 bcopy(nfs_diskless.root_hostnam,nfsv3_diskless.root_hostnam, MNAMELEN);
306 nfsv3_diskless.root_time = nfs_diskless.root_time;
307 bcopy(nfs_diskless.my_hostnam,nfsv3_diskless.my_hostnam,
309 nfs_diskless_valid = 3;
316 nfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred)
319 struct nfs_statfs *sfp;
320 struct nfsmount *nmp = VFSTONFS(mp);
321 thread_t td = curthread;
322 int error = 0, retattr;
325 struct nfsm_info info;
328 info.v3 = (nmp->nm_flag & NFSMNT_NFSV3);
330 lwkt_gettoken(&nmp->nm_token);
335 error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np);
337 lwkt_reltoken(&nmp->nm_token);
341 /* ignore the passed cred */
343 cred->cr_ngroups = 1;
344 if (info.v3 && (nmp->nm_state & NFSSTA_GOTFSINFO) == 0)
345 (void)nfs_fsinfo(nmp, vp, td);
346 nfsstats.rpccnt[NFSPROC_FSSTAT]++;
347 nfsm_reqhead(&info, vp, NFSPROC_FSSTAT, NFSX_FH(info.v3));
348 ERROROUT(nfsm_fhtom(&info, vp));
349 NEGKEEPOUT(nfsm_request(&info, vp, NFSPROC_FSSTAT, td, cred, &error));
351 ERROROUT(nfsm_postop_attr(&info, vp, &retattr,
352 NFS_LATTR_NOSHRINK));
355 if (info.mrep != NULL)
359 NULLOUT(sfp = nfsm_dissect(&info, NFSX_STATFS(info.v3)));
360 sbp->f_flags = nmp->nm_flag;
363 sbp->f_bsize = NFS_FABLKSIZE;
364 tquad = fxdr_hyper(&sfp->sf_tbytes);
365 sbp->f_blocks = (long)(tquad / ((u_quad_t)NFS_FABLKSIZE));
366 tquad = fxdr_hyper(&sfp->sf_fbytes);
367 sbp->f_bfree = (long)(tquad / ((u_quad_t)NFS_FABLKSIZE));
368 tquad = fxdr_hyper(&sfp->sf_abytes);
369 sbp->f_bavail = (long)(tquad / ((u_quad_t)NFS_FABLKSIZE));
370 sbp->f_files = (fxdr_unsigned(int32_t,
371 sfp->sf_tfiles.nfsuquad[1]) & 0x7fffffff);
372 sbp->f_ffree = (fxdr_unsigned(int32_t,
373 sfp->sf_ffiles.nfsuquad[1]) & 0x7fffffff);
375 sbp->f_bsize = fxdr_unsigned(int32_t, sfp->sf_bsize);
376 sbp->f_blocks = fxdr_unsigned(int32_t, sfp->sf_blocks);
377 sbp->f_bfree = fxdr_unsigned(int32_t, sfp->sf_bfree);
378 sbp->f_bavail = fxdr_unsigned(int32_t, sfp->sf_bavail);
384 * Some values are pre-set in mnt_stat. Note in particular f_iosize
385 * cannot be changed once the filesystem is mounted as it is used
386 * as the basis for BIOs.
388 if (sbp != &mp->mnt_stat) {
389 sbp->f_type = mp->mnt_vfc->vfc_typenum;
390 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
391 sbp->f_iosize = mp->mnt_stat.f_iosize;
398 lwkt_reltoken(&nmp->nm_token);
403 nfs_statvfs(struct mount *mp, struct statvfs *sbp, struct ucred *cred)
406 struct nfs_statfs *sfp;
407 struct nfsmount *nmp = VFSTONFS(mp);
408 thread_t td = curthread;
409 int error = 0, retattr;
411 struct nfsm_info info;
414 info.v3 = (nmp->nm_flag & NFSMNT_NFSV3);
415 lwkt_gettoken(&nmp->nm_token);
420 error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np);
422 lwkt_reltoken(&nmp->nm_token);
426 /* ignore the passed cred */
428 cred->cr_ngroups = 1;
429 if (info.v3 && (nmp->nm_state & NFSSTA_GOTFSINFO) == 0)
430 (void)nfs_fsinfo(nmp, vp, td);
431 nfsstats.rpccnt[NFSPROC_FSSTAT]++;
432 nfsm_reqhead(&info, vp, NFSPROC_FSSTAT, NFSX_FH(info.v3));
433 ERROROUT(nfsm_fhtom(&info, vp));
434 NEGKEEPOUT(nfsm_request(&info, vp, NFSPROC_FSSTAT, td, cred, &error));
436 ERROROUT(nfsm_postop_attr(&info, vp, &retattr,
437 NFS_LATTR_NOSHRINK));
440 if (info.mrep != NULL)
444 NULLOUT(sfp = nfsm_dissect(&info, NFSX_STATFS(info.v3)));
445 sbp->f_flag = nmp->nm_flag;
446 sbp->f_owner = nmp->nm_cred->cr_ruid;
449 sbp->f_bsize = NFS_FABLKSIZE;
450 sbp->f_frsize = NFS_FABLKSIZE;
451 sbp->f_blocks = (fxdr_hyper(&sfp->sf_tbytes) /
452 ((u_quad_t)NFS_FABLKSIZE));
453 sbp->f_bfree = (fxdr_hyper(&sfp->sf_fbytes) /
454 ((u_quad_t)NFS_FABLKSIZE));
455 sbp->f_bavail = (fxdr_hyper(&sfp->sf_abytes) /
456 ((u_quad_t)NFS_FABLKSIZE));
457 sbp->f_files = fxdr_hyper(&sfp->sf_tfiles);
458 sbp->f_ffree = fxdr_hyper(&sfp->sf_ffiles);
459 sbp->f_favail = fxdr_hyper(&sfp->sf_afiles);
461 sbp->f_bsize = fxdr_unsigned(int32_t, sfp->sf_bsize);
462 sbp->f_blocks = fxdr_unsigned(int32_t, sfp->sf_blocks);
463 sbp->f_bfree = fxdr_unsigned(int32_t, sfp->sf_bfree);
464 sbp->f_bavail = fxdr_unsigned(int32_t, sfp->sf_bavail);
469 sbp->f_syncreads = 0;
470 sbp->f_syncwrites = 0;
471 sbp->f_asyncreads = 0;
472 sbp->f_asyncwrites = 0;
473 sbp->f_type = mp->mnt_vfc->vfc_typenum;
480 lwkt_reltoken(&nmp->nm_token);
485 * nfs version 3 fsinfo rpc call
488 nfs_fsinfo(struct nfsmount *nmp, struct vnode *vp, struct thread *td)
490 struct nfsv3_fsinfo *fsp;
492 int error = 0, retattr;
494 struct nfsm_info info;
497 nfsstats.rpccnt[NFSPROC_FSINFO]++;
498 nfsm_reqhead(&info, vp, NFSPROC_FSINFO, NFSX_FH(1));
499 ERROROUT(nfsm_fhtom(&info, vp));
500 NEGKEEPOUT(nfsm_request(&info, vp, NFSPROC_FSINFO, td,
501 nfs_vpcred(vp, ND_READ), &error));
502 ERROROUT(nfsm_postop_attr(&info, vp, &retattr, NFS_LATTR_NOSHRINK));
504 NULLOUT(fsp = nfsm_dissect(&info, NFSX_V3FSINFO));
505 pref = fxdr_unsigned(u_int32_t, fsp->fs_wtpref);
506 if (pref < nmp->nm_wsize && pref >= NFS_FABLKSIZE)
507 nmp->nm_wsize = (pref + NFS_FABLKSIZE - 1) &
508 ~(NFS_FABLKSIZE - 1);
509 max = fxdr_unsigned(u_int32_t, fsp->fs_wtmax);
510 if (max < nmp->nm_wsize && max > 0) {
511 nmp->nm_wsize = max & ~(NFS_FABLKSIZE - 1);
512 if (nmp->nm_wsize == 0)
515 pref = fxdr_unsigned(u_int32_t, fsp->fs_rtpref);
516 if (pref < nmp->nm_rsize && pref >= NFS_FABLKSIZE)
517 nmp->nm_rsize = (pref + NFS_FABLKSIZE - 1) &
518 ~(NFS_FABLKSIZE - 1);
519 max = fxdr_unsigned(u_int32_t, fsp->fs_rtmax);
520 if (max < nmp->nm_rsize && max > 0) {
521 nmp->nm_rsize = max & ~(NFS_FABLKSIZE - 1);
522 if (nmp->nm_rsize == 0)
525 pref = fxdr_unsigned(u_int32_t, fsp->fs_dtpref);
526 if (pref < nmp->nm_readdirsize && pref >= NFS_DIRBLKSIZ)
527 nmp->nm_readdirsize = (pref + NFS_DIRBLKSIZ - 1) &
528 ~(NFS_DIRBLKSIZ - 1);
529 if (max < nmp->nm_readdirsize && max > 0) {
530 nmp->nm_readdirsize = max & ~(NFS_DIRBLKSIZ - 1);
531 if (nmp->nm_readdirsize == 0)
532 nmp->nm_readdirsize = max;
534 maxfsize = fxdr_hyper(&fsp->fs_maxfilesize);
535 if (maxfsize > 0 && maxfsize < nmp->nm_maxfilesize)
536 nmp->nm_maxfilesize = maxfsize;
537 nmp->nm_state |= NFSSTA_GOTFSINFO;
540 * Use the smaller of rsize/wsize for the biosize.
542 if (nmp->nm_rsize < nmp->nm_wsize)
543 nmp->nm_mountp->mnt_stat.f_iosize = nmp->nm_rsize;
545 nmp->nm_mountp->mnt_stat.f_iosize = nmp->nm_wsize;
554 * Mount a remote root fs via. nfs. This depends on the info in the
555 * nfs_diskless structure that has been filled in properly by some primary
557 * It goes something like this:
558 * - do enough of "ifconfig" by calling ifioctl() so that the system
559 * can talk to the server
560 * - If nfs_diskless.mygateway is filled in, use that address as
562 * - build the rootfs mount point and call mountnfs() to do the rest.
565 nfs_mountroot(struct mount *mp)
567 struct mount *swap_mp;
568 struct nfsv3_diskless *nd = &nfsv3_diskless;
571 struct thread *td = curthread; /* XXX */
576 #if defined(BOOTP_NFSROOT) && defined(BOOTP)
577 bootpc_init(); /* use bootp to get nfs_diskless filled in */
581 * XXX time must be non-zero when we init the interface or else
582 * the arp code will wedge...
584 while (mycpu->gd_time_seconds == 0)
585 tsleep(mycpu, 0, "arpkludge", 10);
588 * The boot code may have passed us a diskless structure.
590 kprintf("DISKLESS %d\n", nfs_diskless_valid);
591 if (nfs_diskless_valid == 1)
592 nfs_convert_diskless();
597 nd->root_args.flags |= NFSMNT_NFSV3 | NFSMNT_RDIRPLUS;
598 nd->swap_args.flags |= NFSMNT_NFSV3;
600 #define SINP(sockaddr) ((struct sockaddr_in *)(sockaddr))
601 kprintf("nfs_mountroot: interface %s ip %s",
603 inet_ntoa(SINP(&nd->myif.ifra_addr)->sin_addr));
605 inet_ntoa(SINP(&nd->myif.ifra_broadaddr)->sin_addr));
606 kprintf(" mask %s\n",
607 inet_ntoa(SINP(&nd->myif.ifra_mask)->sin_addr));
611 * XXX splnet, so networks will receive...
616 * BOOTP does not necessarily have to be compiled into the kernel
617 * for an NFS root to work. If we inherited the network
618 * configuration for PXEBOOT then pxe_setup_nfsdiskless() has figured
619 * out our interface for us and all we need to do is ifconfig the
620 * interface. We only do this if the interface has not already been
621 * ifconfig'd by e.g. BOOTP.
623 error = socreate(nd->myif.ifra_addr.sa_family, &so, SOCK_DGRAM, 0, td);
625 panic("nfs_mountroot: socreate(%04x): %d",
626 nd->myif.ifra_addr.sa_family, error);
629 error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, proc0.p_ucred);
631 panic("nfs_mountroot: SIOCAIFADDR: %d", error);
633 soclose(so, FNONBLOCK);
636 * If the gateway field is filled in, set it as the default route.
638 if (nd->mygateway.sin_len != 0) {
639 struct sockaddr_in mask, sin;
641 bzero((caddr_t)&mask, sizeof(mask));
643 sin.sin_family = AF_INET;
644 sin.sin_len = sizeof(sin);
645 kprintf("nfs_mountroot: gateway %s\n",
646 inet_ntoa(nd->mygateway.sin_addr));
647 error = rtrequest_global(RTM_ADD, (struct sockaddr *)&sin,
648 (struct sockaddr *)&nd->mygateway,
649 (struct sockaddr *)&mask,
650 RTF_UP | RTF_GATEWAY);
652 kprintf("nfs_mountroot: unable to set gateway, error %d, continuing anyway\n", error);
656 * Create the rootfs mount point.
658 nd->root_args.fh = nd->root_fh;
659 nd->root_args.fhsize = nd->root_fhsize;
660 l = ntohl(nd->root_saddr.sin_addr.s_addr);
661 ksnprintf(buf, sizeof(buf), "%ld.%ld.%ld.%ld:%s",
662 (l >> 24) & 0xff, (l >> 16) & 0xff,
663 (l >> 8) & 0xff, (l >> 0) & 0xff,nd->root_hostnam);
664 kprintf("NFS_ROOT: %s\n",buf);
665 error = nfs_mountdiskless(buf, "/", MNT_RDONLY, &nd->root_saddr,
666 &nd->root_args, td, &vp, &mp);
668 mp->mnt_vfc->vfc_refcount--;
674 if (nd->swap_nblks) {
676 /* Convert to DEV_BSIZE instead of Kilobyte */
680 * Create a fake mount point just for the swap vnode so that the
681 * swap file can be on a different server from the rootfs.
683 nd->swap_args.fh = nd->swap_fh;
684 nd->swap_args.fhsize = nd->swap_fhsize;
685 l = ntohl(nd->swap_saddr.sin_addr.s_addr);
686 ksnprintf(buf, sizeof(buf), "%ld.%ld.%ld.%ld:%s",
687 (l >> 24) & 0xff, (l >> 16) & 0xff,
688 (l >> 8) & 0xff, (l >> 0) & 0xff,nd->swap_hostnam);
689 kprintf("NFS SWAP: %s\n",buf);
690 error = nfs_mountdiskless(buf, "/swap", 0, &nd->swap_saddr,
691 &nd->swap_args, td, &vp, &swap_mp);
698 VTONFS(vp)->n_size = VTONFS(vp)->n_vattr.va_size =
699 nd->swap_nblks * DEV_BSIZE ;
702 * Since the swap file is not the root dir of a file system,
703 * hack it to a regular file.
705 vclrflags(vp, VROOT);
707 nfs_setvtype(vp, VREG);
708 swaponvp(td, vp, nd->swap_nblks);
711 mp->mnt_flag |= MNT_ROOTFS;
715 * This is not really an nfs issue, but it is much easier to
716 * set hostname here and then let the "/etc/rc.xxx" files
717 * mount the right /var based upon its preset value.
719 bcopy(nd->my_hostnam, hostname, MAXHOSTNAMELEN);
720 hostname[MAXHOSTNAMELEN - 1] = '\0';
721 for (i = 0; i < MAXHOSTNAMELEN; i++)
722 if (hostname[i] == '\0')
724 inittodr(ntohl(nd->root_time));
730 * Internal version of mount system call for diskless setup.
733 nfs_mountdiskless(char *path, char *which, int mountflag,
734 struct sockaddr_in *sin, struct nfs_args *args, struct thread *td,
735 struct vnode **vpp, struct mount **mpp)
738 struct sockaddr *nam;
745 if ((error = vfs_rootmountalloc("nfs", path, &mp)) != 0) {
746 kprintf("nfs_mountroot: NFS not configured");
751 mp->mnt_kern_flag = 0;
752 mp->mnt_flag = mountflag;
753 nam = dup_sockaddr((struct sockaddr *)sin);
755 #if defined(BOOTP) || defined(NFS_ROOT)
756 if (args->fhsize == 0) {
759 kprintf("NFS_ROOT: No FH passed from loader, attempting "
761 while (*xpath && *xpath != ':')
766 error = md_mount(sin, xpath, args->fh, &args->fhsize, args, td);
768 kprintf("failed error %d.\n", error);
771 kprintf("success!\n");
775 if ((error = mountnfs(args, mp, nam, which, path, vpp)) != 0) {
776 #if defined(BOOTP) || defined(NFS_ROOT)
779 kprintf("nfs_mountroot: mount %s on %s: %d", path, which, error);
780 mp->mnt_vfc->vfc_refcount--;
792 nfs_decode_args(struct nfsmount *nmp, struct nfs_args *argp)
799 * Silently clear NFSMNT_NOCONN if it's a TCP mount, it makes
800 * no sense in that context.
802 if (nmp->nm_sotype == SOCK_STREAM) {
803 nmp->nm_flag &= ~NFSMNT_NOCONN;
804 argp->flags &= ~NFSMNT_NOCONN;
808 * readdirplus is NFSv3 only.
810 if ((argp->flags & NFSMNT_NFSV3) == 0) {
811 nmp->nm_flag &= ~NFSMNT_RDIRPLUS;
812 argp->flags &= ~NFSMNT_RDIRPLUS;
816 * Re-bind if rsrvd port flag has changed
818 adjsock = (nmp->nm_flag & NFSMNT_RESVPORT) !=
819 (argp->flags & NFSMNT_RESVPORT);
821 /* Update flags atomically. Don't change the lock bits. */
822 nmp->nm_flag = argp->flags | nmp->nm_flag;
825 if ((argp->flags & NFSMNT_TIMEO) && argp->timeo > 0) {
826 nmp->nm_timeo = (argp->timeo * NFS_HZ + 5) / 10;
827 if (nmp->nm_timeo < NFS_MINTIMEO)
828 nmp->nm_timeo = NFS_MINTIMEO;
829 else if (nmp->nm_timeo > NFS_MAXTIMEO)
830 nmp->nm_timeo = NFS_MAXTIMEO;
833 if ((argp->flags & NFSMNT_RETRANS) && argp->retrans > 1) {
834 nmp->nm_retry = argp->retrans;
835 if (nmp->nm_retry > NFS_MAXREXMIT)
836 nmp->nm_retry = NFS_MAXREXMIT;
840 * These parameters effect the buffer cache and cannot be changed
841 * once we've successfully mounted.
843 if ((nmp->nm_state & NFSSTA_GOTFSINFO) == 0) {
844 maxio = nfs_iosize(argp->flags & NFSMNT_NFSV3, nmp->nm_sotype);
846 if ((argp->flags & NFSMNT_WSIZE) && argp->wsize > 0) {
847 nmp->nm_wsize = argp->wsize;
848 /* Round down to multiple of blocksize */
849 nmp->nm_wsize &= ~(NFS_FABLKSIZE - 1);
850 if (nmp->nm_wsize <= 0)
851 nmp->nm_wsize = NFS_FABLKSIZE;
853 if (nmp->nm_wsize > maxio)
854 nmp->nm_wsize = maxio;
855 if (nmp->nm_wsize > MAXBSIZE)
856 nmp->nm_wsize = MAXBSIZE;
858 if ((argp->flags & NFSMNT_RSIZE) && argp->rsize > 0) {
859 nmp->nm_rsize = argp->rsize;
860 /* Round down to multiple of blocksize */
861 nmp->nm_rsize &= ~(NFS_FABLKSIZE - 1);
862 if (nmp->nm_rsize <= 0)
863 nmp->nm_rsize = NFS_FABLKSIZE;
865 if (nmp->nm_rsize > maxio)
866 nmp->nm_rsize = maxio;
867 if (nmp->nm_rsize > MAXBSIZE)
868 nmp->nm_rsize = MAXBSIZE;
870 if ((argp->flags & NFSMNT_READDIRSIZE) &&
871 argp->readdirsize > 0) {
872 nmp->nm_readdirsize = argp->readdirsize;
874 if (nmp->nm_readdirsize > maxio)
875 nmp->nm_readdirsize = maxio;
876 if (nmp->nm_readdirsize > nmp->nm_rsize)
877 nmp->nm_readdirsize = nmp->nm_rsize;
880 if ((argp->flags & NFSMNT_ACREGMIN) && argp->acregmin >= 0)
881 nmp->nm_acregmin = argp->acregmin;
883 nmp->nm_acregmin = NFS_MINATTRTIMO;
884 if ((argp->flags & NFSMNT_ACREGMAX) && argp->acregmax >= 0)
885 nmp->nm_acregmax = argp->acregmax;
887 nmp->nm_acregmax = NFS_MAXATTRTIMO;
888 if ((argp->flags & NFSMNT_ACDIRMIN) && argp->acdirmin >= 0)
889 nmp->nm_acdirmin = argp->acdirmin;
891 nmp->nm_acdirmin = NFS_MINDIRATTRTIMO;
892 if ((argp->flags & NFSMNT_ACDIRMAX) && argp->acdirmax >= 0)
893 nmp->nm_acdirmax = argp->acdirmax;
895 nmp->nm_acdirmax = NFS_MAXDIRATTRTIMO;
896 if (nmp->nm_acdirmin > nmp->nm_acdirmax)
897 nmp->nm_acdirmin = nmp->nm_acdirmax;
898 if (nmp->nm_acregmin > nmp->nm_acregmax)
899 nmp->nm_acregmin = nmp->nm_acregmax;
901 if ((argp->flags & NFSMNT_MAXGRPS) && argp->maxgrouplist >= 0) {
902 if (argp->maxgrouplist <= NFS_MAXGRPS)
903 nmp->nm_numgrps = argp->maxgrouplist;
905 nmp->nm_numgrps = NFS_MAXGRPS;
907 if ((argp->flags & NFSMNT_READAHEAD) && argp->readahead >= 0) {
908 if (argp->readahead <= NFS_MAXRAHEAD)
909 nmp->nm_readahead = argp->readahead;
911 nmp->nm_readahead = NFS_MAXRAHEAD;
913 if ((argp->flags & NFSMNT_DEADTHRESH) && argp->deadthresh >= 1) {
914 if (argp->deadthresh <= NFS_NEVERDEAD)
915 nmp->nm_deadthresh = argp->deadthresh;
917 nmp->nm_deadthresh = NFS_NEVERDEAD;
920 if (nmp->nm_so && adjsock) {
921 nfs_safedisconnect(nmp);
922 if (nmp->nm_sotype == SOCK_DGRAM)
923 while (nfs_connect(nmp, NULL)) {
924 kprintf("nfs_args: retrying connect\n");
925 (void) tsleep((caddr_t)&lbolt, 0, "nfscon", 0);
934 * It seems a bit dumb to copyinstr() the host and path here and then
935 * bcopy() them in mountnfs(), but I wanted to detect errors before
936 * doing the sockargs() call because sockargs() allocates an mbuf and
937 * an error after that means that I have to release the mbuf.
941 nfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred)
944 struct nfs_args args;
945 struct sockaddr *nam;
947 char pth[MNAMELEN], hst[MNAMELEN];
949 u_char nfh[NFSX_V3FHMAX];
955 error = copyin(data, (caddr_t)&args, sizeof (struct nfs_args));
958 if (args.version != NFS_ARGSVERSION) {
959 #ifdef COMPAT_PRELITE2
961 * If the argument version is unknown, then assume the
962 * caller is a pre-lite2 4.4BSD client and convert its
965 struct onfs_args oargs;
966 error = copyin(data, (caddr_t)&oargs, sizeof (struct onfs_args));
969 nfs_convert_oargs(&args,&oargs);
970 #else /* !COMPAT_PRELITE2 */
971 return (EPROGMISMATCH);
972 #endif /* COMPAT_PRELITE2 */
974 if (mp->mnt_flag & MNT_UPDATE) {
975 struct nfsmount *nmp = VFSTONFS(mp);
980 * When doing an update, we can't change from or to
981 * v3, or change cookie translation, or rsize or wsize.
983 args.flags &= ~(NFSMNT_NFSV3 | NFSMNT_RSIZE | NFSMNT_WSIZE);
984 args.flags |= nmp->nm_flag & (NFSMNT_NFSV3);
985 nfs_decode_args(nmp, &args);
990 * Make the nfs_ip_paranoia sysctl serve as the default connection
991 * or no-connection mode for those protocols that support
992 * no-connection mode (the flag will be cleared later for protocols
993 * that do not support no-connection mode). This will allow a client
994 * to receive replies from a different IP then the request was
995 * sent to. Note: default value for nfs_ip_paranoia is 1 (paranoid),
998 if (nfs_ip_paranoia == 0)
999 args.flags |= NFSMNT_NOCONN;
1000 if (args.fhsize < 0 || args.fhsize > NFSX_V3FHMAX)
1002 error = copyin((caddr_t)args.fh, (caddr_t)nfh, args.fhsize);
1005 error = copyinstr(path, pth, MNAMELEN-1, &len);
1008 bzero(&pth[len], MNAMELEN - len);
1009 error = copyinstr(args.hostname, hst, MNAMELEN-1, &len);
1012 bzero(&hst[len], MNAMELEN - len);
1013 /* sockargs() call must be after above copyin() calls */
1014 error = getsockaddr(&nam, (caddr_t)args.addr, args.addrlen);
1018 error = mountnfs(&args, mp, nam, pth, hst, &vp);
1023 * Common code for mount and mountroot
1026 mountnfs(struct nfs_args *argp, struct mount *mp, struct sockaddr *nam,
1027 char *pth, char *hst, struct vnode **vpp)
1029 struct nfsmount *nmp;
1035 if (mp->mnt_flag & MNT_UPDATE) {
1037 /* update paths, file handles, etc, here XXX */
1038 FREE(nam, M_SONAME);
1041 nmp = objcache_get(nfsmount_objcache, M_WAITOK);
1042 bzero((caddr_t)nmp, sizeof (struct nfsmount));
1043 mtx_init(&nmp->nm_rxlock);
1044 mtx_init(&nmp->nm_txlock);
1045 TAILQ_INIT(&nmp->nm_uidlruhead);
1046 TAILQ_INIT(&nmp->nm_bioq);
1047 TAILQ_INIT(&nmp->nm_reqq);
1048 TAILQ_INIT(&nmp->nm_reqtxq);
1049 TAILQ_INIT(&nmp->nm_reqrxq);
1050 mp->mnt_data = (qaddr_t)nmp;
1051 lwkt_token_init(&nmp->nm_token, "nfs_token");
1054 nmp->nm_mountp = mp;
1055 mp->mnt_kern_flag |= MNTK_ALL_MPSAFE;
1057 lwkt_gettoken(&nmp->nm_token);
1060 * V2 can only handle 32 bit filesizes. A 4GB-1 limit may be too
1061 * high, depending on whether we end up with negative offsets in
1062 * the client or server somewhere. 2GB-1 may be safer.
1064 * For V3, nfs_fsinfo will adjust this as necessary. Assume maximum
1065 * that we can handle until we find out otherwise. Note that seek
1066 * offsets are signed.
1068 if ((argp->flags & NFSMNT_NFSV3) == 0)
1069 nmp->nm_maxfilesize = 0xffffffffLL;
1071 nmp->nm_maxfilesize = 0x7fffffffffffffffLL;
1073 nmp->nm_timeo = NFS_TIMEO;
1074 nmp->nm_retry = NFS_RETRANS;
1075 nmp->nm_wsize = nfs_iosize(argp->flags & NFSMNT_NFSV3, argp->sotype);
1076 nmp->nm_rsize = nmp->nm_wsize;
1077 nmp->nm_readdirsize = NFS_READDIRSIZE;
1078 nmp->nm_numgrps = NFS_MAXGRPS;
1079 nmp->nm_readahead = NFS_DEFRAHEAD;
1080 nmp->nm_deadthresh = NFS_DEADTHRESH;
1081 nmp->nm_fhsize = argp->fhsize;
1082 bcopy((caddr_t)argp->fh, (caddr_t)nmp->nm_fh, argp->fhsize);
1083 bcopy(hst, mp->mnt_stat.f_mntfromname, MNAMELEN);
1085 /* Set up the sockets and per-host congestion */
1086 nmp->nm_sotype = argp->sotype;
1087 nmp->nm_soproto = argp->proto;
1088 nmp->nm_cred = crhold(proc0.p_ucred);
1090 nfs_decode_args(nmp, argp);
1093 * For Connection based sockets (TCP,...) defer the connect until
1094 * the first request, in case the server is not responding.
1096 if (nmp->nm_sotype == SOCK_DGRAM &&
1097 (error = nfs_connect(nmp, NULL)))
1101 * This is silly, but it has to be set so that vinifod() works.
1102 * We do not want to do an nfs_statfs() here since we can get
1103 * stuck on a dead server and we are holding a lock on the mount
1106 mp->mnt_stat.f_iosize =
1107 nfs_iosize(nmp->nm_flag & NFSMNT_NFSV3, nmp->nm_sotype);
1110 * Install vop_ops for our vnops
1112 vfs_add_vnodeops(mp, &nfsv2_vnode_vops, &mp->mnt_vn_norm_ops);
1113 vfs_add_vnodeops(mp, &nfsv2_spec_vops, &mp->mnt_vn_spec_ops);
1114 vfs_add_vnodeops(mp, &nfsv2_fifo_vops, &mp->mnt_vn_fifo_ops);
1117 * A reference count is needed on the nfsnode representing the
1118 * remote root. If this object is not persistent, then backward
1119 * traversals of the mount point (i.e. "..") will not work if
1120 * the nfsnode gets flushed out of the cache. Ufs does not have
1121 * this problem, because one can identify root inodes by their
1122 * number == ROOTINO (2).
1124 error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np);
1130 * Retrieval of mountpoint attributes is delayed until nfs_rot
1131 * or nfs_statfs are first called. This will happen either when
1132 * we first traverse the mount point or if somebody does a df(1).
1134 * NFSSTA_GOTFSINFO is used to flag if we have successfully
1135 * retrieved mountpoint attributes. In the case of NFSv3 we
1136 * also flag static fsinfo.
1139 (*vpp)->v_type = VNON;
1142 * Lose the lock but keep the ref.
1145 lwkt_gettoken(&nfs_token);
1146 TAILQ_INSERT_TAIL(&nfs_mountq, nmp, nm_entry);
1147 lwkt_reltoken(&nfs_token);
1171 * Start the reader and writer threads.
1173 lwkt_create(nfssvc_iod_reader, nmp, &nmp->nm_rxthread,
1174 NULL, 0, rxcpu, "nfsiod_rx");
1175 lwkt_create(nfssvc_iod_writer, nmp, &nmp->nm_txthread,
1176 NULL, 0, txcpu, "nfsiod_tx");
1177 lwkt_reltoken(&nmp->nm_token);
1180 nfs_disconnect(nmp);
1181 lwkt_reltoken(&nmp->nm_token);
1182 nfs_free_mount(nmp);
1187 * unmount system call
1190 nfs_unmount(struct mount *mp, int mntflags)
1192 struct nfsmount *nmp;
1193 int error, flags = 0;
1196 lwkt_gettoken(&nmp->nm_token);
1197 if (mntflags & MNT_FORCE) {
1198 flags |= FORCECLOSE;
1199 nmp->nm_flag |= NFSMNT_FORCE;
1203 * Goes something like this..
1204 * - Call vflush() to clear out vnodes for this file system
1205 * - Close the socket
1206 * - Free up the data structures
1208 /* In the forced case, cancel any outstanding requests. */
1209 if (flags & FORCECLOSE) {
1210 error = nfs_nmcancelreqs(nmp);
1212 kprintf("NFS: %s: Unable to cancel all requests\n",
1213 mp->mnt_stat.f_mntfromname);
1214 /* continue anyway */
1219 * Must handshake with nfs_clientd() if it is active. XXX
1221 nmp->nm_state |= NFSSTA_DISMINPROG;
1224 * We hold 1 extra ref on the root vnode; see comment in mountnfs().
1226 * If this doesn't work and we are doing a forced unmount we continue
1229 error = vflush(mp, 1, flags);
1231 nmp->nm_state &= ~NFSSTA_DISMINPROG;
1232 if ((flags & FORCECLOSE) == 0) {
1233 lwkt_reltoken(&nmp->nm_token);
1239 * We are now committed to the unmount.
1240 * For NQNFS, let the server daemon free the nfsmount structure.
1242 if (nmp->nm_flag & NFSMNT_KERB)
1243 nmp->nm_state |= NFSSTA_DISMNT;
1244 nfssvc_iod_stop1(nmp);
1245 nfs_disconnect(nmp);
1246 nfssvc_iod_stop2(nmp);
1248 lwkt_gettoken(&nfs_token);
1249 TAILQ_REMOVE(&nfs_mountq, nmp, nm_entry);
1250 lwkt_reltoken(&nfs_token);
1252 lwkt_reltoken(&nmp->nm_token);
1254 if ((nmp->nm_flag & NFSMNT_KERB) == 0) {
1255 nfs_free_mount(nmp);
1261 nfs_free_mount(struct nfsmount *nmp)
1264 crfree(nmp->nm_cred);
1265 nmp->nm_cred = NULL;
1268 FREE(nmp->nm_nam, M_SONAME);
1271 objcache_put(nfsmount_objcache, nmp);
1275 * Return root of a filesystem
1278 nfs_root(struct mount *mp, struct vnode **vpp)
1281 struct nfsmount *nmp;
1287 lwkt_gettoken(&nmp->nm_token);
1288 error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np);
1290 lwkt_reltoken(&nmp->nm_token);
1296 * Get transfer parameters and root vnode attributes
1298 * NOTE: nfs_fsinfo() is expected to override the default
1301 if ((nmp->nm_state & NFSSTA_GOTFSINFO) == 0) {
1302 if (nmp->nm_flag & NFSMNT_NFSV3) {
1303 mp->mnt_stat.f_iosize = nfs_iosize(1, nmp->nm_sotype);
1304 error = nfs_fsinfo(nmp, vp, curthread);
1306 if ((error = VOP_GETATTR(vp, &attrs)) == 0)
1307 nmp->nm_state |= NFSSTA_GOTFSINFO;
1312 * The root vnode is usually cached by the namecache so do not
1313 * try to avoid going over the wire even if we have previous
1314 * information cached. A stale NFS mount can loop
1315 * forever resolving the root vnode if we return no-error when
1316 * there is in fact an error.
1318 np->n_attrstamp = 0;
1319 error = VOP_GETATTR(vp, &attrs);
1321 if (vp->v_type == VNON)
1322 nfs_setvtype(vp, VDIR);
1323 vsetflags(vp, VROOT);
1328 lwkt_reltoken(&nmp->nm_token);
1338 static int nfs_sync_scan1(struct mount *mp, struct vnode *vp, void *data);
1339 static int nfs_sync_scan2(struct mount *mp, struct vnode *vp, void *data);
1342 * Flush out the buffer cache
1346 nfs_sync(struct mount *mp, int waitfor)
1348 struct nfsmount *nmp = VFSTONFS(mp);
1349 struct scaninfo scaninfo;
1352 scaninfo.rescan = 1;
1353 scaninfo.waitfor = waitfor;
1354 scaninfo.allerror = 0;
1357 * Force stale buffer cache information to be flushed.
1359 lwkt_gettoken(&nmp->nm_token);
1361 while (error == 0 && scaninfo.rescan) {
1362 scaninfo.rescan = 0;
1363 error = vmntvnodescan(mp, VMSC_GETVP, nfs_sync_scan1,
1364 nfs_sync_scan2, &scaninfo);
1366 lwkt_reltoken(&nmp->nm_token);
1371 nfs_sync_scan1(struct mount *mp, struct vnode *vp, void *data)
1373 struct scaninfo *info = data;
1375 if (vn_islocked(vp) || RB_EMPTY(&vp->v_rbdirty_tree))
1377 if (info->waitfor & MNT_LAZY)
1383 nfs_sync_scan2(struct mount *mp, struct vnode *vp, void *data)
1385 struct scaninfo *info = data;
1388 error = VOP_FSYNC(vp, info->waitfor, 0);
1390 info->allerror = error;