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 $
40 #include "opt_bootp.h"
41 #include "opt_nfsroot.h"
43 #include <sys/param.h>
44 #include <sys/sockio.h>
46 #include <sys/vnode.h>
47 #include <sys/fcntl.h>
48 #include <sys/kernel.h>
49 #include <sys/sysctl.h>
50 #include <sys/malloc.h>
51 #include <sys/mount.h>
53 #include <sys/socket.h>
54 #include <sys/socketvar.h>
55 #include <sys/systm.h>
56 #include <sys/objcache.h>
59 #include <vm/vm_extern.h>
62 #include <net/route.h>
63 #include <netinet/in.h>
65 #include <sys/thread2.h>
66 #include <sys/mutex2.h>
74 #include "nfsm_subs.h"
75 #include "nfsdiskless.h"
76 #include "nfsmountrpc.h"
78 extern int nfs_mountroot(struct mount *mp);
79 extern void bootpc_init(void);
81 extern struct vop_ops nfsv2_vnode_vops;
82 extern struct vop_ops nfsv2_fifo_vops;
83 extern struct vop_ops nfsv2_spec_vops;
85 MALLOC_DEFINE(M_NFSREQ, "NFS req", "NFS request header");
86 MALLOC_DEFINE(M_NFSBIGFH, "NFSV3 bigfh", "NFS version 3 file handle");
87 MALLOC_DEFINE(M_NFSD, "NFS daemon", "Nfs server daemon structure");
88 MALLOC_DEFINE(M_NFSDIROFF, "NFSV3 diroff", "NFS directory offset data");
89 MALLOC_DEFINE(M_NFSRVDESC, "NFSV3 srvdesc", "NFS server socket descriptor");
90 MALLOC_DEFINE(M_NFSUID, "NFS uid", "Nfs uid mapping structure");
91 MALLOC_DEFINE(M_NFSHASH, "NFS hash", "NFS hash tables");
93 struct objcache *nfsmount_objcache;
95 struct nfsstats nfsstats;
96 SYSCTL_NODE(_vfs, OID_AUTO, nfs, CTLFLAG_RW, 0, "NFS filesystem");
97 SYSCTL_STRUCT(_vfs_nfs, NFS_NFSSTATS, nfsstats, CTLFLAG_RD, &nfsstats, nfsstats,
98 "Nfs stats structure");
99 static int nfs_ip_paranoia = 1;
100 SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs_ip_paranoia, CTLFLAG_RW, &nfs_ip_paranoia, 0,
101 "Enable no-connection mode for protocols that support no-connection mode");
104 SYSCTL_INT(_vfs_nfs, OID_AUTO, debug, CTLFLAG_RW, &nfs_debug, 0, "");
108 * Tunable to determine the Read/Write unit size. Maximum value
109 * is NFS_MAXDATA. We also default to NFS_MAXDATA.
111 static int nfs_io_size = NFS_MAXDATA;
112 SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs_io_size, CTLFLAG_RW,
113 &nfs_io_size, 0, "NFS optimal I/O unit size");
115 static void nfs_decode_args (struct nfsmount *nmp,
116 struct nfs_args *argp);
117 static int mountnfs (struct nfs_args *,struct mount *,
118 struct sockaddr *,char *,char *,struct vnode **);
119 static int nfs_mount ( struct mount *mp, char *path, caddr_t data,
121 static int nfs_unmount ( struct mount *mp, int mntflags);
122 static int nfs_root ( struct mount *mp, struct vnode **vpp);
123 static int nfs_statfs ( struct mount *mp, struct statfs *sbp,
125 static int nfs_statvfs(struct mount *mp, struct statvfs *sbp,
127 static int nfs_sync ( struct mount *mp, int waitfor);
130 * nfs vfs operations.
132 static struct vfsops nfs_vfsops = {
133 .vfs_mount = nfs_mount,
134 .vfs_unmount = nfs_unmount,
135 .vfs_root = nfs_root,
136 .vfs_statfs = nfs_statfs,
137 .vfs_statvfs = nfs_statvfs,
138 .vfs_sync = nfs_sync,
139 .vfs_init = nfs_init,
140 .vfs_uninit = nfs_uninit
142 VFS_SET(nfs_vfsops, nfs, VFCF_NETWORK);
143 MODULE_VERSION(nfs, 1);
146 * This structure must be filled in by a primary bootstrap or bootstrap
147 * server for a diskless/dataless machine. It is initialized below just
148 * to ensure that it is allocated to initialized data (.data not .bss).
150 struct nfs_diskless nfs_diskless = { { { 0 } } };
151 struct nfsv3_diskless nfsv3_diskless = { { { 0 } } };
152 int nfs_diskless_valid = 0;
154 SYSCTL_INT(_vfs_nfs, OID_AUTO, diskless_valid, CTLFLAG_RD,
155 &nfs_diskless_valid, 0,
156 "NFS diskless params were obtained");
158 SYSCTL_STRING(_vfs_nfs, OID_AUTO, diskless_rootpath, CTLFLAG_RD,
159 nfsv3_diskless.root_hostnam, 0,
160 "Host name for mount point");
162 SYSCTL_OPAQUE(_vfs_nfs, OID_AUTO, diskless_rootaddr, CTLFLAG_RD,
163 &nfsv3_diskless.root_saddr, sizeof nfsv3_diskless.root_saddr,
164 "%Ssockaddr_in", "Address of root server");
166 SYSCTL_STRING(_vfs_nfs, OID_AUTO, diskless_swappath, CTLFLAG_RD,
167 nfsv3_diskless.swap_hostnam, 0,
168 "Host name for mount ppoint");
170 SYSCTL_OPAQUE(_vfs_nfs, OID_AUTO, diskless_swapaddr, CTLFLAG_RD,
171 &nfsv3_diskless.swap_saddr, sizeof nfsv3_diskless.swap_saddr,
172 "%Ssockaddr_in", "Address of swap server");
175 void nfsargs_ntoh (struct nfs_args *);
176 static int nfs_mountdiskless (char *, char *, int,
177 struct sockaddr_in *, struct nfs_args *,
178 struct thread *, struct vnode **,
180 static void nfs_convert_diskless (void);
181 static void nfs_convert_oargs (struct nfs_args *args,
182 struct onfs_args *oargs);
185 * Calculate the buffer I/O block size to use. The maximum V2 block size
186 * is typically 8K, the maximum datagram size is typically 16K, and the
187 * maximum V3 block size is typically 32K. The buffer cache tends to work
188 * best with 16K blocks but we allow 32K for TCP connections.
190 * We force the block size to be at least a page for buffer cache efficiency.
193 nfs_iosize(int v3, int sotype)
199 if (sotype == SOCK_STREAM)
202 iomax = NFS_MAXDGRAMDATA;
204 iomax = NFS_V2MAXDATA;
206 if ((iosize = nfs_io_size) > iomax)
208 if (iosize < PAGE_SIZE)
212 * This is an aweful hack but until the buffer cache is rewritten
213 * we need it. The problem is that when you combine write() with
214 * mmap() the vm_page->valid bits can become weird looking
215 * (e.g. 0xfc). This occurs because NFS uses piecemeal buffers
216 * at the file EOF. To solve the problem the BIO system needs to
217 * be guarenteed that the NFS iosize for regular files will be a
218 * multiple of PAGE_SIZE so it can invalidate the whole page
219 * rather then just the piece of it owned by the buffer when
220 * NFS does vinvalbuf() calls.
222 if (iosize & PAGE_MASK)
223 iosize = (iosize & ~PAGE_MASK) + PAGE_SIZE;
228 nfs_convert_oargs(struct nfs_args *args, struct onfs_args *oargs)
230 args->version = NFS_ARGSVERSION;
231 args->addr = oargs->addr;
232 args->addrlen = oargs->addrlen;
233 args->sotype = oargs->sotype;
234 args->proto = oargs->proto;
235 args->fh = oargs->fh;
236 args->fhsize = oargs->fhsize;
237 args->flags = oargs->flags;
238 args->wsize = oargs->wsize;
239 args->rsize = oargs->rsize;
240 args->readdirsize = oargs->readdirsize;
241 args->timeo = oargs->timeo;
242 args->retrans = oargs->retrans;
243 args->maxgrouplist = oargs->maxgrouplist;
244 args->readahead = oargs->readahead;
245 args->deadthresh = oargs->deadthresh;
246 args->hostname = oargs->hostname;
250 nfs_convert_diskless(void)
254 bcopy(&nfs_diskless.myif, &nfsv3_diskless.myif,
255 sizeof(struct ifaliasreq));
256 bcopy(&nfs_diskless.mygateway, &nfsv3_diskless.mygateway,
257 sizeof(struct sockaddr_in));
258 nfs_convert_oargs(&nfsv3_diskless.swap_args, &nfs_diskless.swap_args);
261 * Copy the NFS handle passed from the diskless code.
263 * XXX CURRENTLY DISABLED - bootp passes us a NFSv2 handle which
264 * will fail utterly with HAMMER due to limitations with NFSv2
267 bcopy(nfs_diskless.swap_fh, nfsv3_diskless.swap_fh, NFSX_V2FH);
268 nfsv3_diskless.swap_fhsize = NFSX_V2FH;
269 for (i = NFSX_V2FH - 1; i >= 0; --i) {
270 if (nfs_diskless.swap_fh[i])
274 nfsv3_diskless.swap_fhsize = 0;
275 nfsv3_diskless.swap_fhsize = 0; /* FORCE DISABLE */
277 bcopy(&nfs_diskless.swap_saddr,&nfsv3_diskless.swap_saddr,
278 sizeof(struct sockaddr_in));
279 bcopy(nfs_diskless.swap_hostnam,nfsv3_diskless.swap_hostnam, MNAMELEN);
280 nfsv3_diskless.swap_nblks = nfs_diskless.swap_nblks;
281 bcopy(&nfs_diskless.swap_ucred, &nfsv3_diskless.swap_ucred,
282 sizeof(struct ucred));
283 nfs_convert_oargs(&nfsv3_diskless.root_args, &nfs_diskless.root_args);
286 * Copy the NFS handle passed from the diskless code.
288 * XXX CURRENTLY DISABLED - bootp passes us a NFSv2 handle which
289 * will fail utterly with HAMMER due to limitations with NFSv2
292 bcopy(nfs_diskless.root_fh, nfsv3_diskless.root_fh, NFSX_V2FH);
293 nfsv3_diskless.root_fhsize = NFSX_V2FH;
294 for (i = NFSX_V2FH - 1; i >= 0; --i) {
295 if (nfs_diskless.root_fh[i])
299 nfsv3_diskless.root_fhsize = 0;
300 nfsv3_diskless.root_fhsize = 0; /* FORCE DISABLE */
302 bcopy(&nfs_diskless.root_saddr,&nfsv3_diskless.root_saddr,
303 sizeof(struct sockaddr_in));
304 bcopy(nfs_diskless.root_hostnam,nfsv3_diskless.root_hostnam, MNAMELEN);
305 nfsv3_diskless.root_time = nfs_diskless.root_time;
306 bcopy(nfs_diskless.my_hostnam,nfsv3_diskless.my_hostnam,
308 nfs_diskless_valid = 3;
315 nfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred)
318 struct nfs_statfs *sfp;
319 struct nfsmount *nmp = VFSTONFS(mp);
320 thread_t td = curthread;
321 int error = 0, retattr;
324 struct nfsm_info info;
327 info.v3 = (nmp->nm_flag & NFSMNT_NFSV3);
329 lwkt_gettoken(&nmp->nm_token);
334 error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np, NULL);
336 lwkt_reltoken(&nmp->nm_token);
340 /* ignore the passed cred */
342 cred->cr_ngroups = 1;
343 if (info.v3 && (nmp->nm_state & NFSSTA_GOTFSINFO) == 0)
344 (void)nfs_fsinfo(nmp, vp, td);
345 nfsstats.rpccnt[NFSPROC_FSSTAT]++;
346 nfsm_reqhead(&info, vp, NFSPROC_FSSTAT, NFSX_FH(info.v3));
347 ERROROUT(nfsm_fhtom(&info, vp));
348 NEGKEEPOUT(nfsm_request(&info, vp, NFSPROC_FSSTAT, td, cred, &error));
350 ERROROUT(nfsm_postop_attr(&info, vp, &retattr,
351 NFS_LATTR_NOSHRINK));
354 if (info.mrep != NULL)
358 NULLOUT(sfp = nfsm_dissect(&info, NFSX_STATFS(info.v3)));
359 sbp->f_flags = nmp->nm_flag;
362 sbp->f_bsize = NFS_FABLKSIZE;
363 tquad = fxdr_hyper(&sfp->sf_tbytes);
364 sbp->f_blocks = (long)(tquad / ((u_quad_t)NFS_FABLKSIZE));
365 tquad = fxdr_hyper(&sfp->sf_fbytes);
366 sbp->f_bfree = (long)(tquad / ((u_quad_t)NFS_FABLKSIZE));
367 tquad = fxdr_hyper(&sfp->sf_abytes);
368 sbp->f_bavail = (long)(tquad / ((u_quad_t)NFS_FABLKSIZE));
369 sbp->f_files = (fxdr_unsigned(int32_t,
370 sfp->sf_tfiles.nfsuquad[1]) & 0x7fffffff);
371 sbp->f_ffree = (fxdr_unsigned(int32_t,
372 sfp->sf_ffiles.nfsuquad[1]) & 0x7fffffff);
374 sbp->f_bsize = fxdr_unsigned(int32_t, sfp->sf_bsize);
375 sbp->f_blocks = fxdr_unsigned(int32_t, sfp->sf_blocks);
376 sbp->f_bfree = fxdr_unsigned(int32_t, sfp->sf_bfree);
377 sbp->f_bavail = fxdr_unsigned(int32_t, sfp->sf_bavail);
383 * Some values are pre-set in mnt_stat. Note in particular f_iosize
384 * cannot be changed once the filesystem is mounted as it is used
385 * as the basis for BIOs.
387 if (sbp != &mp->mnt_stat) {
388 sbp->f_type = mp->mnt_vfc->vfc_typenum;
389 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
390 sbp->f_iosize = mp->mnt_stat.f_iosize;
397 lwkt_reltoken(&nmp->nm_token);
402 nfs_statvfs(struct mount *mp, struct statvfs *sbp, struct ucred *cred)
405 struct nfs_statfs *sfp;
406 struct nfsmount *nmp = VFSTONFS(mp);
407 thread_t td = curthread;
408 int error = 0, retattr;
410 struct nfsm_info info;
413 info.v3 = (nmp->nm_flag & NFSMNT_NFSV3);
414 lwkt_gettoken(&nmp->nm_token);
419 error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np, NULL);
421 lwkt_reltoken(&nmp->nm_token);
425 /* ignore the passed cred */
427 cred->cr_ngroups = 1;
428 if (info.v3 && (nmp->nm_state & NFSSTA_GOTFSINFO) == 0)
429 (void)nfs_fsinfo(nmp, vp, td);
430 nfsstats.rpccnt[NFSPROC_FSSTAT]++;
431 nfsm_reqhead(&info, vp, NFSPROC_FSSTAT, NFSX_FH(info.v3));
432 ERROROUT(nfsm_fhtom(&info, vp));
433 NEGKEEPOUT(nfsm_request(&info, vp, NFSPROC_FSSTAT, td, cred, &error));
435 ERROROUT(nfsm_postop_attr(&info, vp, &retattr,
436 NFS_LATTR_NOSHRINK));
439 if (info.mrep != NULL)
443 NULLOUT(sfp = nfsm_dissect(&info, NFSX_STATFS(info.v3)));
444 sbp->f_flag = nmp->nm_flag;
445 sbp->f_owner = nmp->nm_cred->cr_ruid;
448 sbp->f_bsize = NFS_FABLKSIZE;
449 sbp->f_frsize = NFS_FABLKSIZE;
450 sbp->f_blocks = (fxdr_hyper(&sfp->sf_tbytes) /
451 ((u_quad_t)NFS_FABLKSIZE));
452 sbp->f_bfree = (fxdr_hyper(&sfp->sf_fbytes) /
453 ((u_quad_t)NFS_FABLKSIZE));
454 sbp->f_bavail = (fxdr_hyper(&sfp->sf_abytes) /
455 ((u_quad_t)NFS_FABLKSIZE));
456 sbp->f_files = fxdr_hyper(&sfp->sf_tfiles);
457 sbp->f_ffree = fxdr_hyper(&sfp->sf_ffiles);
458 sbp->f_favail = fxdr_hyper(&sfp->sf_afiles);
460 sbp->f_bsize = fxdr_unsigned(int32_t, sfp->sf_bsize);
461 sbp->f_blocks = fxdr_unsigned(int32_t, sfp->sf_blocks);
462 sbp->f_bfree = fxdr_unsigned(int32_t, sfp->sf_bfree);
463 sbp->f_bavail = fxdr_unsigned(int32_t, sfp->sf_bavail);
468 sbp->f_syncreads = 0;
469 sbp->f_syncwrites = 0;
470 sbp->f_asyncreads = 0;
471 sbp->f_asyncwrites = 0;
472 sbp->f_type = mp->mnt_vfc->vfc_typenum;
479 lwkt_reltoken(&nmp->nm_token);
484 * nfs version 3 fsinfo rpc call
487 nfs_fsinfo(struct nfsmount *nmp, struct vnode *vp, struct thread *td)
489 struct nfsv3_fsinfo *fsp;
491 int error = 0, retattr;
493 struct nfsm_info info;
496 nfsstats.rpccnt[NFSPROC_FSINFO]++;
497 nfsm_reqhead(&info, vp, NFSPROC_FSINFO, NFSX_FH(1));
498 ERROROUT(nfsm_fhtom(&info, vp));
499 NEGKEEPOUT(nfsm_request(&info, vp, NFSPROC_FSINFO, td,
500 nfs_vpcred(vp, ND_READ), &error));
501 ERROROUT(nfsm_postop_attr(&info, vp, &retattr, NFS_LATTR_NOSHRINK));
503 NULLOUT(fsp = nfsm_dissect(&info, NFSX_V3FSINFO));
504 pref = fxdr_unsigned(u_int32_t, fsp->fs_wtpref);
505 if (pref < nmp->nm_wsize && pref >= NFS_FABLKSIZE)
506 nmp->nm_wsize = (pref + NFS_FABLKSIZE - 1) &
507 ~(NFS_FABLKSIZE - 1);
508 max = fxdr_unsigned(u_int32_t, fsp->fs_wtmax);
509 if (max < nmp->nm_wsize && max > 0) {
510 nmp->nm_wsize = max & ~(NFS_FABLKSIZE - 1);
511 if (nmp->nm_wsize == 0)
514 pref = fxdr_unsigned(u_int32_t, fsp->fs_rtpref);
515 if (pref < nmp->nm_rsize && pref >= NFS_FABLKSIZE)
516 nmp->nm_rsize = (pref + NFS_FABLKSIZE - 1) &
517 ~(NFS_FABLKSIZE - 1);
518 max = fxdr_unsigned(u_int32_t, fsp->fs_rtmax);
519 if (max < nmp->nm_rsize && max > 0) {
520 nmp->nm_rsize = max & ~(NFS_FABLKSIZE - 1);
521 if (nmp->nm_rsize == 0)
524 pref = fxdr_unsigned(u_int32_t, fsp->fs_dtpref);
525 if (pref < nmp->nm_readdirsize && pref >= NFS_DIRBLKSIZ)
526 nmp->nm_readdirsize = (pref + NFS_DIRBLKSIZ - 1) &
527 ~(NFS_DIRBLKSIZ - 1);
528 if (max < nmp->nm_readdirsize && max > 0) {
529 nmp->nm_readdirsize = max & ~(NFS_DIRBLKSIZ - 1);
530 if (nmp->nm_readdirsize == 0)
531 nmp->nm_readdirsize = max;
533 maxfsize = fxdr_hyper(&fsp->fs_maxfilesize);
534 if (maxfsize > 0 && maxfsize < nmp->nm_maxfilesize)
535 nmp->nm_maxfilesize = maxfsize;
536 nmp->nm_state |= NFSSTA_GOTFSINFO;
539 * Use the smaller of rsize/wsize for the biosize.
541 if (nmp->nm_rsize < nmp->nm_wsize)
542 nmp->nm_mountp->mnt_stat.f_iosize = nmp->nm_rsize;
544 nmp->nm_mountp->mnt_stat.f_iosize = nmp->nm_wsize;
553 * Mount a remote root fs via. nfs. This depends on the info in the
554 * nfs_diskless structure that has been filled in properly by some primary
556 * It goes something like this:
557 * - do enough of "ifconfig" by calling ifioctl() so that the system
558 * can talk to the server
559 * - If nfs_diskless.mygateway is filled in, use that address as
561 * - build the rootfs mount point and call mountnfs() to do the rest.
564 nfs_mountroot(struct mount *mp)
566 struct mount *swap_mp;
567 struct nfsv3_diskless *nd = &nfsv3_diskless;
570 struct thread *td = curthread; /* XXX */
575 #if defined(BOOTP_NFSROOT) && defined(BOOTP)
576 bootpc_init(); /* use bootp to get nfs_diskless filled in */
580 * XXX time must be non-zero when we init the interface or else
581 * the arp code will wedge...
583 while (mycpu->gd_time_seconds == 0)
584 tsleep(mycpu, 0, "arpkludge", 10);
587 * The boot code may have passed us a diskless structure.
589 kprintf("DISKLESS %d\n", nfs_diskless_valid);
590 if (nfs_diskless_valid == 1)
591 nfs_convert_diskless();
596 nd->root_args.flags |= NFSMNT_NFSV3 | NFSMNT_RDIRPLUS;
597 nd->swap_args.flags |= NFSMNT_NFSV3;
599 #define SINP(sockaddr) ((struct sockaddr_in *)(sockaddr))
600 kprintf("nfs_mountroot: interface %s ip %s",
602 inet_ntoa(SINP(&nd->myif.ifra_addr)->sin_addr));
604 inet_ntoa(SINP(&nd->myif.ifra_broadaddr)->sin_addr));
605 kprintf(" mask %s\n",
606 inet_ntoa(SINP(&nd->myif.ifra_mask)->sin_addr));
610 * XXX splnet, so networks will receive...
615 * BOOTP does not necessarily have to be compiled into the kernel
616 * for an NFS root to work. If we inherited the network
617 * configuration for PXEBOOT then pxe_setup_nfsdiskless() has figured
618 * out our interface for us and all we need to do is ifconfig the
619 * interface. We only do this if the interface has not already been
620 * ifconfig'd by e.g. BOOTP.
622 error = socreate(nd->myif.ifra_addr.sa_family, &so, SOCK_DGRAM, 0, td);
624 panic("nfs_mountroot: socreate(%04x): %d",
625 nd->myif.ifra_addr.sa_family, error);
628 error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, proc0.p_ucred);
630 panic("nfs_mountroot: SIOCAIFADDR: %d", error);
632 soclose(so, FNONBLOCK);
635 * If the gateway field is filled in, set it as the default route.
637 if (nd->mygateway.sin_len != 0) {
638 struct sockaddr_in mask, sin;
640 bzero((caddr_t)&mask, sizeof(mask));
642 sin.sin_family = AF_INET;
643 sin.sin_len = sizeof(sin);
644 kprintf("nfs_mountroot: gateway %s\n",
645 inet_ntoa(nd->mygateway.sin_addr));
646 error = rtrequest_global(RTM_ADD, (struct sockaddr *)&sin,
647 (struct sockaddr *)&nd->mygateway,
648 (struct sockaddr *)&mask,
649 RTF_UP | RTF_GATEWAY);
651 kprintf("nfs_mountroot: unable to set gateway, error %d, continuing anyway\n", error);
655 * Create the rootfs mount point.
657 nd->root_args.fh = nd->root_fh;
658 nd->root_args.fhsize = nd->root_fhsize;
659 l = ntohl(nd->root_saddr.sin_addr.s_addr);
660 ksnprintf(buf, sizeof(buf), "%ld.%ld.%ld.%ld:%s",
661 (l >> 24) & 0xff, (l >> 16) & 0xff,
662 (l >> 8) & 0xff, (l >> 0) & 0xff,nd->root_hostnam);
663 kprintf("NFS_ROOT: %s\n",buf);
664 error = nfs_mountdiskless(buf, "/", MNT_RDONLY, &nd->root_saddr,
665 &nd->root_args, td, &vp, &mp);
667 mp->mnt_vfc->vfc_refcount--;
673 if (nd->swap_nblks) {
675 /* Convert to DEV_BSIZE instead of Kilobyte */
679 * Create a fake mount point just for the swap vnode so that the
680 * swap file can be on a different server from the rootfs.
682 nd->swap_args.fh = nd->swap_fh;
683 nd->swap_args.fhsize = nd->swap_fhsize;
684 l = ntohl(nd->swap_saddr.sin_addr.s_addr);
685 ksnprintf(buf, sizeof(buf), "%ld.%ld.%ld.%ld:%s",
686 (l >> 24) & 0xff, (l >> 16) & 0xff,
687 (l >> 8) & 0xff, (l >> 0) & 0xff,nd->swap_hostnam);
688 kprintf("NFS SWAP: %s\n",buf);
689 error = nfs_mountdiskless(buf, "/swap", 0, &nd->swap_saddr,
690 &nd->swap_args, td, &vp, &swap_mp);
697 VTONFS(vp)->n_size = VTONFS(vp)->n_vattr.va_size =
698 nd->swap_nblks * DEV_BSIZE ;
701 * Since the swap file is not the root dir of a file system,
702 * hack it to a regular file.
704 vclrflags(vp, VROOT);
706 nfs_setvtype(vp, VREG);
707 swaponvp(td, vp, nd->swap_nblks);
710 mp->mnt_flag |= MNT_ROOTFS;
713 * This is not really an nfs issue, but it is much easier to
714 * set hostname here and then let the "/etc/rc.xxx" files
715 * mount the right /var based upon its preset value.
717 bcopy(nd->my_hostnam, hostname, MAXHOSTNAMELEN);
718 hostname[MAXHOSTNAMELEN - 1] = '\0';
719 for (i = 0; i < MAXHOSTNAMELEN; i++)
720 if (hostname[i] == '\0')
722 inittodr(ntohl(nd->root_time));
728 * Internal version of mount system call for diskless setup.
731 nfs_mountdiskless(char *path, char *which, int mountflag,
732 struct sockaddr_in *sin, struct nfs_args *args, struct thread *td,
733 struct vnode **vpp, struct mount **mpp)
736 struct sockaddr *nam;
743 if ((error = vfs_rootmountalloc("nfs", path, &mp)) != 0) {
744 kprintf("nfs_mountroot: NFS not configured");
749 mp->mnt_kern_flag = 0;
750 mp->mnt_flag = mountflag;
751 nam = dup_sockaddr((struct sockaddr *)sin);
753 #if defined(BOOTP) || defined(NFS_ROOT)
754 if (args->fhsize == 0) {
757 kprintf("NFS_ROOT: No FH passed from loader, attempting "
759 while (*xpath && *xpath != ':')
764 error = md_mount(sin, xpath, args->fh, &args->fhsize, args, td);
766 kprintf("failed error %d.\n", error);
769 kprintf("success!\n");
773 if ((error = mountnfs(args, mp, nam, which, path, vpp)) != 0) {
774 #if defined(BOOTP) || defined(NFS_ROOT)
777 kprintf("nfs_mountroot: mount %s on %s: %d", path, which, error);
778 mp->mnt_vfc->vfc_refcount--;
781 kfree(nam, M_SONAME);
789 nfs_decode_args(struct nfsmount *nmp, struct nfs_args *argp)
796 * Silently clear NFSMNT_NOCONN if it's a TCP mount, it makes
797 * no sense in that context.
799 if (nmp->nm_sotype == SOCK_STREAM) {
800 nmp->nm_flag &= ~NFSMNT_NOCONN;
801 argp->flags &= ~NFSMNT_NOCONN;
805 * readdirplus is NFSv3 only.
807 if ((argp->flags & NFSMNT_NFSV3) == 0) {
808 nmp->nm_flag &= ~NFSMNT_RDIRPLUS;
809 argp->flags &= ~NFSMNT_RDIRPLUS;
813 * Re-bind if rsrvd port flag has changed
815 adjsock = (nmp->nm_flag & NFSMNT_RESVPORT) !=
816 (argp->flags & NFSMNT_RESVPORT);
818 /* Update flags atomically. Don't change the lock bits. */
819 nmp->nm_flag = argp->flags | nmp->nm_flag;
822 if ((argp->flags & NFSMNT_TIMEO) && argp->timeo > 0) {
823 nmp->nm_timeo = (argp->timeo * NFS_HZ + 5) / 10;
824 if (nmp->nm_timeo < NFS_MINTIMEO)
825 nmp->nm_timeo = NFS_MINTIMEO;
826 else if (nmp->nm_timeo > NFS_MAXTIMEO)
827 nmp->nm_timeo = NFS_MAXTIMEO;
830 if ((argp->flags & NFSMNT_RETRANS) && argp->retrans > 1) {
831 nmp->nm_retry = argp->retrans;
832 if (nmp->nm_retry > NFS_MAXREXMIT)
833 nmp->nm_retry = NFS_MAXREXMIT;
837 * These parameters effect the buffer cache and cannot be changed
838 * once we've successfully mounted.
840 if ((nmp->nm_state & NFSSTA_GOTFSINFO) == 0) {
841 maxio = nfs_iosize(argp->flags & NFSMNT_NFSV3, nmp->nm_sotype);
843 if ((argp->flags & NFSMNT_WSIZE) && argp->wsize > 0) {
844 nmp->nm_wsize = argp->wsize;
845 /* Round down to multiple of blocksize */
846 nmp->nm_wsize &= ~(NFS_FABLKSIZE - 1);
847 if (nmp->nm_wsize <= 0)
848 nmp->nm_wsize = NFS_FABLKSIZE;
850 if (nmp->nm_wsize > maxio)
851 nmp->nm_wsize = maxio;
852 if (nmp->nm_wsize > MAXBSIZE)
853 nmp->nm_wsize = MAXBSIZE;
855 if ((argp->flags & NFSMNT_RSIZE) && argp->rsize > 0) {
856 nmp->nm_rsize = argp->rsize;
857 /* Round down to multiple of blocksize */
858 nmp->nm_rsize &= ~(NFS_FABLKSIZE - 1);
859 if (nmp->nm_rsize <= 0)
860 nmp->nm_rsize = NFS_FABLKSIZE;
862 if (nmp->nm_rsize > maxio)
863 nmp->nm_rsize = maxio;
864 if (nmp->nm_rsize > MAXBSIZE)
865 nmp->nm_rsize = MAXBSIZE;
867 if ((argp->flags & NFSMNT_READDIRSIZE) &&
868 argp->readdirsize > 0) {
869 nmp->nm_readdirsize = argp->readdirsize;
871 if (nmp->nm_readdirsize > maxio)
872 nmp->nm_readdirsize = maxio;
873 if (nmp->nm_readdirsize > nmp->nm_rsize)
874 nmp->nm_readdirsize = nmp->nm_rsize;
877 if ((argp->flags & NFSMNT_ACREGMIN) && argp->acregmin >= 0)
878 nmp->nm_acregmin = argp->acregmin;
880 nmp->nm_acregmin = NFS_MINATTRTIMO;
881 if ((argp->flags & NFSMNT_ACREGMAX) && argp->acregmax >= 0)
882 nmp->nm_acregmax = argp->acregmax;
884 nmp->nm_acregmax = NFS_MAXATTRTIMO;
885 if ((argp->flags & NFSMNT_ACDIRMIN) && argp->acdirmin >= 0)
886 nmp->nm_acdirmin = argp->acdirmin;
888 nmp->nm_acdirmin = NFS_MINDIRATTRTIMO;
889 if ((argp->flags & NFSMNT_ACDIRMAX) && argp->acdirmax >= 0)
890 nmp->nm_acdirmax = argp->acdirmax;
892 nmp->nm_acdirmax = NFS_MAXDIRATTRTIMO;
893 if (nmp->nm_acdirmin > nmp->nm_acdirmax)
894 nmp->nm_acdirmin = nmp->nm_acdirmax;
895 if (nmp->nm_acregmin > nmp->nm_acregmax)
896 nmp->nm_acregmin = nmp->nm_acregmax;
898 if ((argp->flags & NFSMNT_MAXGRPS) && argp->maxgrouplist >= 0) {
899 if (argp->maxgrouplist <= NFS_MAXGRPS)
900 nmp->nm_numgrps = argp->maxgrouplist;
902 nmp->nm_numgrps = NFS_MAXGRPS;
904 if ((argp->flags & NFSMNT_READAHEAD) && argp->readahead >= 0) {
905 if (argp->readahead <= NFS_MAXRAHEAD)
906 nmp->nm_readahead = argp->readahead;
908 nmp->nm_readahead = NFS_MAXRAHEAD;
910 if ((argp->flags & NFSMNT_DEADTHRESH) && argp->deadthresh >= 1) {
911 if (argp->deadthresh <= NFS_NEVERDEAD)
912 nmp->nm_deadthresh = argp->deadthresh;
914 nmp->nm_deadthresh = NFS_NEVERDEAD;
917 if (nmp->nm_so && adjsock) {
918 nfs_safedisconnect(nmp);
919 if (nmp->nm_sotype == SOCK_DGRAM)
920 while (nfs_connect(nmp, NULL)) {
921 kprintf("nfs_args: retrying connect\n");
922 (void) tsleep((caddr_t)&lbolt, 0, "nfscon", 0);
931 * It seems a bit dumb to copyinstr() the host and path here and then
932 * bcopy() them in mountnfs(), but I wanted to detect errors before
933 * doing the sockargs() call because sockargs() allocates an mbuf and
934 * an error after that means that I have to release the mbuf.
938 nfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred)
941 struct nfs_args args;
942 struct sockaddr *nam;
944 char pth[MNAMELEN], hst[MNAMELEN];
946 u_char nfh[NFSX_V3FHMAX];
952 error = copyin(data, (caddr_t)&args, sizeof (struct nfs_args));
955 if (args.version != NFS_ARGSVERSION) {
956 #ifdef COMPAT_PRELITE2
958 * If the argument version is unknown, then assume the
959 * caller is a pre-lite2 4.4BSD client and convert its
962 struct onfs_args oargs;
963 error = copyin(data, (caddr_t)&oargs, sizeof (struct onfs_args));
966 nfs_convert_oargs(&args,&oargs);
967 #else /* !COMPAT_PRELITE2 */
968 return (EPROGMISMATCH);
969 #endif /* COMPAT_PRELITE2 */
971 if (mp->mnt_flag & MNT_UPDATE) {
972 struct nfsmount *nmp = VFSTONFS(mp);
977 * When doing an update, we can't change from or to
978 * v3, or change cookie translation, or rsize or wsize.
980 args.flags &= ~(NFSMNT_NFSV3 | NFSMNT_RSIZE | NFSMNT_WSIZE);
981 args.flags |= nmp->nm_flag & (NFSMNT_NFSV3);
982 nfs_decode_args(nmp, &args);
987 * Make the nfs_ip_paranoia sysctl serve as the default connection
988 * or no-connection mode for those protocols that support
989 * no-connection mode (the flag will be cleared later for protocols
990 * that do not support no-connection mode). This will allow a client
991 * to receive replies from a different IP then the request was
992 * sent to. Note: default value for nfs_ip_paranoia is 1 (paranoid),
995 if (nfs_ip_paranoia == 0)
996 args.flags |= NFSMNT_NOCONN;
997 if (args.fhsize < 0 || args.fhsize > NFSX_V3FHMAX)
999 error = copyin((caddr_t)args.fh, (caddr_t)nfh, args.fhsize);
1002 error = copyinstr(path, pth, MNAMELEN-1, &len);
1005 bzero(&pth[len], MNAMELEN - len);
1006 error = copyinstr(args.hostname, hst, MNAMELEN-1, &len);
1009 bzero(&hst[len], MNAMELEN - len);
1010 /* sockargs() call must be after above copyin() calls */
1011 error = getsockaddr(&nam, (caddr_t)args.addr, args.addrlen);
1015 error = mountnfs(&args, mp, nam, pth, hst, &vp);
1020 * Common code for mount and mountroot
1023 mountnfs(struct nfs_args *argp, struct mount *mp, struct sockaddr *nam,
1024 char *pth, char *hst, struct vnode **vpp)
1026 struct nfsmount *nmp;
1032 if (mp->mnt_flag & MNT_UPDATE) {
1034 /* update paths, file handles, etc, here XXX */
1035 kfree(nam, M_SONAME);
1038 nmp = objcache_get(nfsmount_objcache, M_WAITOK);
1039 bzero((caddr_t)nmp, sizeof (struct nfsmount));
1040 mtx_init(&nmp->nm_rxlock);
1041 mtx_init(&nmp->nm_txlock);
1042 TAILQ_INIT(&nmp->nm_uidlruhead);
1043 TAILQ_INIT(&nmp->nm_bioq);
1044 TAILQ_INIT(&nmp->nm_reqq);
1045 TAILQ_INIT(&nmp->nm_reqtxq);
1046 TAILQ_INIT(&nmp->nm_reqrxq);
1047 mp->mnt_data = (qaddr_t)nmp;
1048 lwkt_token_init(&nmp->nm_token, "nfs_token");
1051 nmp->nm_mountp = mp;
1052 mp->mnt_kern_flag |= MNTK_ALL_MPSAFE;
1053 mp->mnt_kern_flag |= MNTK_THR_SYNC;
1055 lwkt_gettoken(&nmp->nm_token);
1058 * V2 can only handle 32 bit filesizes. A 4GB-1 limit may be too
1059 * high, depending on whether we end up with negative offsets in
1060 * the client or server somewhere. 2GB-1 may be safer.
1062 * For V3, nfs_fsinfo will adjust this as necessary. Assume maximum
1063 * that we can handle until we find out otherwise. Note that seek
1064 * offsets are signed.
1066 if ((argp->flags & NFSMNT_NFSV3) == 0)
1067 nmp->nm_maxfilesize = 0xffffffffLL;
1069 nmp->nm_maxfilesize = 0x7fffffffffffffffLL;
1071 nmp->nm_timeo = NFS_TIMEO;
1072 nmp->nm_retry = NFS_RETRANS;
1073 nmp->nm_wsize = nfs_iosize(argp->flags & NFSMNT_NFSV3, argp->sotype);
1074 nmp->nm_rsize = nmp->nm_wsize;
1075 nmp->nm_readdirsize = NFS_READDIRSIZE;
1076 nmp->nm_numgrps = NFS_MAXGRPS;
1077 nmp->nm_readahead = NFS_DEFRAHEAD;
1078 nmp->nm_deadthresh = NFS_DEADTHRESH;
1079 nmp->nm_fhsize = argp->fhsize;
1080 bcopy((caddr_t)argp->fh, (caddr_t)nmp->nm_fh, argp->fhsize);
1081 bcopy(hst, mp->mnt_stat.f_mntfromname, MNAMELEN);
1083 /* Set up the sockets and per-host congestion */
1084 nmp->nm_sotype = argp->sotype;
1085 nmp->nm_soproto = argp->proto;
1086 nmp->nm_cred = crhold(proc0.p_ucred);
1088 nfs_decode_args(nmp, argp);
1091 * For Connection based sockets (TCP,...) defer the connect until
1092 * the first request, in case the server is not responding.
1094 if (nmp->nm_sotype == SOCK_DGRAM &&
1095 (error = nfs_connect(nmp, NULL)))
1099 * This is silly, but it has to be set so that vinifod() works.
1100 * We do not want to do an nfs_statfs() here since we can get
1101 * stuck on a dead server and we are holding a lock on the mount
1104 mp->mnt_stat.f_iosize =
1105 nfs_iosize(nmp->nm_flag & NFSMNT_NFSV3, nmp->nm_sotype);
1108 * Install vop_ops for our vnops
1110 vfs_add_vnodeops(mp, &nfsv2_vnode_vops, &mp->mnt_vn_norm_ops);
1111 vfs_add_vnodeops(mp, &nfsv2_spec_vops, &mp->mnt_vn_spec_ops);
1112 vfs_add_vnodeops(mp, &nfsv2_fifo_vops, &mp->mnt_vn_fifo_ops);
1115 * A reference count is needed on the nfsnode representing the
1116 * remote root. If this object is not persistent, then backward
1117 * traversals of the mount point (i.e. "..") will not work if
1118 * the nfsnode gets flushed out of the cache. Ufs does not have
1119 * this problem, because one can identify root inodes by their
1120 * number == ROOTINO (2).
1122 error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np, NULL);
1128 * Retrieval of mountpoint attributes is delayed until nfs_rot
1129 * or nfs_statfs are first called. This will happen either when
1130 * we first traverse the mount point or if somebody does a df(1).
1132 * NFSSTA_GOTFSINFO is used to flag if we have successfully
1133 * retrieved mountpoint attributes. In the case of NFSv3 we
1134 * also flag static fsinfo.
1137 (*vpp)->v_type = VNON;
1140 * Lose the lock but keep the ref.
1143 lwkt_gettoken(&nfs_token);
1144 TAILQ_INSERT_TAIL(&nfs_mountq, nmp, nm_entry);
1145 lwkt_reltoken(&nfs_token);
1164 * Start the reader and writer threads.
1166 lwkt_create(nfssvc_iod_reader, nmp, &nmp->nm_rxthread,
1167 NULL, 0, rxcpu, "nfsiod_rx");
1168 lwkt_create(nfssvc_iod_writer, nmp, &nmp->nm_txthread,
1169 NULL, 0, txcpu, "nfsiod_tx");
1170 lwkt_reltoken(&nmp->nm_token);
1173 nfs_disconnect(nmp);
1174 lwkt_reltoken(&nmp->nm_token);
1175 nfs_free_mount(nmp);
1180 * unmount system call
1183 nfs_unmount(struct mount *mp, int mntflags)
1185 struct nfsmount *nmp;
1186 int error, flags = 0;
1189 lwkt_gettoken(&nmp->nm_token);
1190 if (mntflags & MNT_FORCE) {
1191 flags |= FORCECLOSE;
1192 nmp->nm_flag |= NFSMNT_FORCE;
1196 * Goes something like this..
1197 * - Call vflush() to clear out vnodes for this file system
1198 * - Close the socket
1199 * - Free up the data structures
1201 /* In the forced case, cancel any outstanding requests. */
1202 if (flags & FORCECLOSE) {
1203 error = nfs_nmcancelreqs(nmp);
1205 kprintf("NFS: %s: Unable to cancel all requests\n",
1206 mp->mnt_stat.f_mntfromname);
1207 /* continue anyway */
1212 * Must handshake with nfs_clientd() if it is active. XXX
1214 nmp->nm_state |= NFSSTA_DISMINPROG;
1217 * We hold 1 extra ref on the root vnode; see comment in mountnfs().
1219 * If this doesn't work and we are doing a forced unmount we continue
1222 error = vflush(mp, 1, flags);
1224 nmp->nm_state &= ~NFSSTA_DISMINPROG;
1225 if ((flags & FORCECLOSE) == 0) {
1226 lwkt_reltoken(&nmp->nm_token);
1232 * We are now committed to the unmount.
1233 * For NQNFS, let the server daemon free the nfsmount structure.
1235 if (nmp->nm_flag & NFSMNT_KERB)
1236 nmp->nm_state |= NFSSTA_DISMNT;
1237 nfssvc_iod_stop1(nmp);
1238 nfs_disconnect(nmp);
1239 nfssvc_iod_stop2(nmp);
1241 lwkt_gettoken(&nfs_token);
1242 TAILQ_REMOVE(&nfs_mountq, nmp, nm_entry);
1243 lwkt_reltoken(&nfs_token);
1245 lwkt_reltoken(&nmp->nm_token);
1247 if ((nmp->nm_flag & NFSMNT_KERB) == 0) {
1248 nfs_free_mount(nmp);
1254 nfs_free_mount(struct nfsmount *nmp)
1257 crfree(nmp->nm_cred);
1258 nmp->nm_cred = NULL;
1261 kfree(nmp->nm_nam, M_SONAME);
1264 objcache_put(nfsmount_objcache, nmp);
1268 * Return root of a filesystem
1271 nfs_root(struct mount *mp, struct vnode **vpp)
1274 struct nfsmount *nmp;
1280 lwkt_gettoken(&nmp->nm_token);
1281 error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np, NULL);
1283 lwkt_reltoken(&nmp->nm_token);
1289 * Get transfer parameters and root vnode attributes
1291 * NOTE: nfs_fsinfo() is expected to override the default
1294 if ((nmp->nm_state & NFSSTA_GOTFSINFO) == 0) {
1295 if (nmp->nm_flag & NFSMNT_NFSV3) {
1296 mp->mnt_stat.f_iosize = nfs_iosize(1, nmp->nm_sotype);
1297 error = nfs_fsinfo(nmp, vp, curthread);
1299 if ((error = VOP_GETATTR(vp, &attrs)) == 0)
1300 nmp->nm_state |= NFSSTA_GOTFSINFO;
1305 * The root vnode is usually cached by the namecache so do not
1306 * try to avoid going over the wire even if we have previous
1307 * information cached. A stale NFS mount can loop
1308 * forever resolving the root vnode if we return no-error when
1309 * there is in fact an error.
1311 np->n_attrstamp = 0;
1312 error = VOP_GETATTR(vp, &attrs);
1314 if (vp->v_type == VNON)
1315 nfs_setvtype(vp, VDIR);
1316 vsetflags(vp, VROOT);
1321 lwkt_reltoken(&nmp->nm_token);
1331 static int nfs_sync_scan1(struct mount *mp, struct vnode *vp, void *data);
1332 static int nfs_sync_scan2(struct mount *mp, struct vnode *vp, void *data);
1335 * Flush out the buffer cache
1339 nfs_sync(struct mount *mp, int waitfor)
1341 struct nfsmount *nmp = VFSTONFS(mp);
1342 struct scaninfo scaninfo;
1345 scaninfo.rescan = 1;
1346 scaninfo.waitfor = waitfor;
1347 scaninfo.allerror = 0;
1350 * Force stale buffer cache information to be flushed.
1352 lwkt_gettoken(&nmp->nm_token);
1354 while (error == 0 && scaninfo.rescan) {
1355 scaninfo.rescan = 0;
1356 error = vmntvnodescan(mp, VMSC_GETVP, nfs_sync_scan1,
1357 nfs_sync_scan2, &scaninfo);
1359 lwkt_reltoken(&nmp->nm_token);
1364 nfs_sync_scan1(struct mount *mp, struct vnode *vp, void *data)
1366 struct scaninfo *info = data;
1368 if (vn_islocked(vp) || RB_EMPTY(&vp->v_rbdirty_tree))
1370 if (info->waitfor & MNT_LAZY)
1376 nfs_sync_scan2(struct mount *mp, struct vnode *vp, void *data)
1378 struct scaninfo *info = data;
1381 error = VOP_FSYNC(vp, info->waitfor, 0);
1383 info->allerror = error;