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 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * from nfs_vfsops.c 8.12 (Berkeley) 5/20/95
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
39 #include "opt_bootp.h"
40 #include "opt_nfsroot.h"
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/kernel.h>
47 #include <sys/clock.h>
50 #include <sys/malloc.h>
52 #include <sys/module.h>
53 #include <sys/mount.h>
55 #include <sys/socket.h>
56 #include <sys/socketvar.h>
57 #include <sys/sockio.h>
58 #include <sys/sysctl.h>
59 #include <sys/vnode.h>
60 #include <sys/signalvar.h>
63 #include <vm/vm_extern.h>
67 #include <net/route.h>
68 #include <netinet/in.h>
70 #include <fs/nfs/nfsport.h>
71 #include <fs/nfsclient/nfsnode.h>
72 #include <fs/nfsclient/nfsmount.h>
73 #include <fs/nfsclient/nfs.h>
74 #include <fs/nfsclient/nfsdiskless.h>
76 extern int nfscl_ticks;
77 extern struct timeval nfsboottime;
78 extern struct nfsstats newnfsstats;
80 MALLOC_DEFINE(M_NEWNFSREQ, "newnfsclient_req", "New NFS request header");
81 MALLOC_DEFINE(M_NEWNFSMNT, "newnfsmnt", "New NFS mount struct");
83 SYSCTL_DECL(_vfs_newnfs);
84 SYSCTL_STRUCT(_vfs_newnfs, NFS_NFSSTATS, nfsstats, CTLFLAG_RW,
85 &newnfsstats, nfsstats, "S,nfsstats");
86 static int nfs_ip_paranoia = 1;
87 SYSCTL_INT(_vfs_newnfs, OID_AUTO, nfs_ip_paranoia, CTLFLAG_RW,
88 &nfs_ip_paranoia, 0, "");
89 static int nfs_tprintf_initial_delay = NFS_TPRINTF_INITIAL_DELAY;
90 SYSCTL_INT(_vfs_newnfs, NFS_TPRINTF_INITIAL_DELAY,
91 downdelayinitial, CTLFLAG_RW, &nfs_tprintf_initial_delay, 0, "");
92 /* how long between console messages "nfs server foo not responding" */
93 static int nfs_tprintf_delay = NFS_TPRINTF_DELAY;
94 SYSCTL_INT(_vfs_newnfs, NFS_TPRINTF_DELAY,
95 downdelayinterval, CTLFLAG_RW, &nfs_tprintf_delay, 0, "");
97 static void nfs_sec_name(char *, int *);
98 static void nfs_decode_args(struct mount *mp, struct nfsmount *nmp,
99 struct nfs_args *argp, const char *, struct ucred *,
101 static int mountnfs(struct nfs_args *, struct mount *,
102 struct sockaddr *, char *, u_char *, u_char *, u_char *,
103 struct vnode **, struct ucred *, struct thread *, int);
104 static void nfs_getnlminfo(struct vnode *, uint8_t *, size_t *,
105 struct sockaddr_storage *, int *, off_t *);
106 static vfs_mount_t nfs_mount;
107 static vfs_cmount_t nfs_cmount;
108 static vfs_unmount_t nfs_unmount;
109 static vfs_root_t nfs_root;
110 static vfs_statfs_t nfs_statfs;
111 static vfs_sync_t nfs_sync;
112 static vfs_sysctl_t nfs_sysctl;
115 * nfs vfs operations.
117 static struct vfsops nfs_vfsops = {
118 .vfs_init = ncl_init,
119 .vfs_mount = nfs_mount,
120 .vfs_cmount = nfs_cmount,
121 .vfs_root = nfs_root,
122 .vfs_statfs = nfs_statfs,
123 .vfs_sync = nfs_sync,
124 .vfs_uninit = ncl_uninit,
125 .vfs_unmount = nfs_unmount,
126 .vfs_sysctl = nfs_sysctl,
128 VFS_SET(nfs_vfsops, newnfs, VFCF_NETWORK);
130 /* So that loader and kldload(2) can find us, wherever we are.. */
131 MODULE_VERSION(newnfs, 1);
134 * This structure must be filled in by a primary bootstrap or bootstrap
135 * server for a diskless/dataless machine. It is initialized below just
136 * to ensure that it is allocated to initialized data (.data not .bss).
138 struct nfs_diskless newnfs_diskless = { { { 0 } } };
139 struct nfsv3_diskless newnfsv3_diskless = { { { 0 } } };
140 int newnfs_diskless_valid = 0;
142 SYSCTL_INT(_vfs_newnfs, OID_AUTO, diskless_valid, CTLFLAG_RD,
143 &newnfs_diskless_valid, 0,
144 "Has the diskless struct been filled correctly");
146 SYSCTL_STRING(_vfs_newnfs, OID_AUTO, diskless_rootpath, CTLFLAG_RD,
147 newnfsv3_diskless.root_hostnam, 0, "Path to nfs root");
149 SYSCTL_OPAQUE(_vfs_newnfs, OID_AUTO, diskless_rootaddr, CTLFLAG_RD,
150 &newnfsv3_diskless.root_saddr, sizeof newnfsv3_diskless.root_saddr,
151 "%Ssockaddr_in", "Diskless root nfs address");
154 void newnfsargs_ntoh(struct nfs_args *);
155 static int nfs_mountdiskless(char *,
156 struct sockaddr_in *, struct nfs_args *,
157 struct thread *, struct vnode **, struct mount *);
158 static void nfs_convert_diskless(void);
159 static void nfs_convert_oargs(struct nfs_args *args,
160 struct onfs_args *oargs);
163 newnfs_iosize(struct nfsmount *nmp)
167 /* First, set the upper limit for iosize */
168 if (nmp->nm_flag & NFSMNT_NFSV4) {
169 maxio = NFS_MAXBSIZE;
170 } else if (nmp->nm_flag & NFSMNT_NFSV3) {
171 if (nmp->nm_sotype == SOCK_DGRAM)
172 maxio = NFS_MAXDGRAMDATA;
174 maxio = NFS_MAXBSIZE;
176 maxio = NFS_V2MAXDATA;
178 if (nmp->nm_rsize > maxio || nmp->nm_rsize == 0)
179 nmp->nm_rsize = maxio;
180 if (nmp->nm_rsize > MAXBSIZE)
181 nmp->nm_rsize = MAXBSIZE;
182 if (nmp->nm_readdirsize > maxio || nmp->nm_readdirsize == 0)
183 nmp->nm_readdirsize = maxio;
184 if (nmp->nm_readdirsize > nmp->nm_rsize)
185 nmp->nm_readdirsize = nmp->nm_rsize;
186 if (nmp->nm_wsize > maxio || nmp->nm_wsize == 0)
187 nmp->nm_wsize = maxio;
188 if (nmp->nm_wsize > MAXBSIZE)
189 nmp->nm_wsize = MAXBSIZE;
192 * Calculate the size used for io buffers. Use the larger
193 * of the two sizes to minimise nfs requests but make sure
194 * that it is at least one VM page to avoid wasting buffer
197 iosize = imax(nmp->nm_rsize, nmp->nm_wsize);
198 iosize = imax(iosize, PAGE_SIZE);
199 nmp->nm_mountp->mnt_stat.f_iosize = iosize;
204 nfs_convert_oargs(struct nfs_args *args, struct onfs_args *oargs)
207 args->version = NFS_ARGSVERSION;
208 args->addr = oargs->addr;
209 args->addrlen = oargs->addrlen;
210 args->sotype = oargs->sotype;
211 args->proto = oargs->proto;
212 args->fh = oargs->fh;
213 args->fhsize = oargs->fhsize;
214 args->flags = oargs->flags;
215 args->wsize = oargs->wsize;
216 args->rsize = oargs->rsize;
217 args->readdirsize = oargs->readdirsize;
218 args->timeo = oargs->timeo;
219 args->retrans = oargs->retrans;
220 args->readahead = oargs->readahead;
221 args->hostname = oargs->hostname;
225 nfs_convert_diskless(void)
228 bcopy(&newnfs_diskless.myif, &newnfsv3_diskless.myif,
229 sizeof (struct ifaliasreq));
230 bcopy(&newnfs_diskless.mygateway, &newnfsv3_diskless.mygateway,
231 sizeof (struct sockaddr_in));
232 nfs_convert_oargs(&newnfsv3_diskless.root_args,
233 &newnfs_diskless.root_args);
234 if (newnfsv3_diskless.root_args.flags & NFSMNT_NFSV3) {
235 newnfsv3_diskless.root_fhsize = NFSX_MYFH;
236 bcopy(newnfs_diskless.root_fh, newnfsv3_diskless.root_fh,
239 newnfsv3_diskless.root_fhsize = NFSX_V2FH;
240 bcopy(newnfs_diskless.root_fh, newnfsv3_diskless.root_fh,
243 bcopy(&newnfs_diskless.root_saddr,&newnfsv3_diskless.root_saddr,
244 sizeof(struct sockaddr_in));
245 bcopy(newnfs_diskless.root_hostnam, newnfsv3_diskless.root_hostnam,
247 newnfsv3_diskless.root_time = newnfs_diskless.root_time;
248 bcopy(newnfs_diskless.my_hostnam, newnfsv3_diskless.my_hostnam,
250 newnfs_diskless_valid = 3;
257 nfs_statfs(struct mount *mp, struct statfs *sbp)
261 struct nfsmount *nmp = VFSTONFS(mp);
262 struct nfsvattr nfsva;
265 int error = 0, attrflag, gotfsinfo = 0, ret;
270 error = vfs_busy(mp, MBF_NOWAIT);
273 error = ncl_nget(mp, nmp->nm_fh, nmp->nm_fhsize, &np);
279 mtx_lock(&nmp->nm_mtx);
280 if (NFSHASNFSV3(nmp) && !NFSHASGOTFSINFO(nmp)) {
281 mtx_unlock(&nmp->nm_mtx);
282 error = nfsrpc_fsinfo(vp, &fs, td->td_ucred, td, &nfsva,
287 mtx_unlock(&nmp->nm_mtx);
289 error = nfsrpc_statfs(vp, &sb, &fs, td->td_ucred, td, &nfsva,
292 ret = nfsrpc_getattrnovp(nmp, nmp->nm_fh, nmp->nm_fhsize, 1,
293 td->td_ucred, td, &nfsva, NULL);
296 * Just set default values to get things going.
298 NFSBZERO((caddr_t)&nfsva, sizeof (struct nfsvattr));
299 nfsva.na_vattr.va_type = VDIR;
300 nfsva.na_vattr.va_mode = 0777;
301 nfsva.na_vattr.va_nlink = 100;
302 nfsva.na_vattr.va_uid = (uid_t)0;
303 nfsva.na_vattr.va_gid = (gid_t)0;
304 nfsva.na_vattr.va_fileid = 2;
305 nfsva.na_vattr.va_gen = 1;
306 nfsva.na_vattr.va_blocksize = NFS_FABLKSIZE;
307 nfsva.na_vattr.va_size = 512 * 1024;
310 (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
312 mtx_lock(&nmp->nm_mtx);
313 if (gotfsinfo || (nmp->nm_flag & NFSMNT_NFSV4))
314 nfscl_loadfsinfo(nmp, &fs);
315 nfscl_loadsbinfo(nmp, &sb, sbp);
316 sbp->f_flags = nmp->nm_flag;
317 sbp->f_iosize = newnfs_iosize(nmp);
318 mtx_unlock(&nmp->nm_mtx);
319 if (sbp != &mp->mnt_stat) {
320 bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
321 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
323 strncpy(&sbp->f_fstypename[0], mp->mnt_vfc->vfc_name, MFSNAMELEN);
324 } else if (NFS_ISV4(vp)) {
325 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
333 * nfs version 3 fsinfo rpc call
336 ncl_fsinfo(struct nfsmount *nmp, struct vnode *vp, struct ucred *cred,
340 struct nfsvattr nfsva;
343 error = nfsrpc_fsinfo(vp, &fs, cred, td, &nfsva, &attrflag, NULL);
346 (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0,
348 mtx_lock(&nmp->nm_mtx);
349 nfscl_loadfsinfo(nmp, &fs);
350 mtx_unlock(&nmp->nm_mtx);
356 * Mount a remote root fs via. nfs. This depends on the info in the
357 * newnfs_diskless structure that has been filled in properly by some primary
359 * It goes something like this:
360 * - do enough of "ifconfig" by calling ifioctl() so that the system
361 * can talk to the server
362 * - If newnfs_diskless.mygateway is filled in, use that address as
364 * - build the rootfs mount point and call mountnfs() to do the rest.
366 * It is assumed to be safe to read, modify, and write the nfsv3_diskless
367 * structure, as well as other global NFS client variables here, as
368 * nfs_mountroot() will be called once in the boot before any other NFS
369 * client activity occurs.
372 ncl_mountroot(struct mount *mp)
374 struct thread *td = curthread;
375 struct nfsv3_diskless *nd = &newnfsv3_diskless;
384 #if defined(BOOTP_NFSROOT) && defined(BOOTP)
385 bootpc_init(); /* use bootp to get nfs_diskless filled in */
386 #elif defined(NFS_ROOT)
387 nfs_setup_diskless();
390 if (newnfs_diskless_valid == 0)
392 if (newnfs_diskless_valid == 1)
393 nfs_convert_diskless();
396 * XXX splnet, so networks will receive...
401 * Do enough of ifconfig(8) so that the critical net interface can
402 * talk to the server.
404 error = socreate(nd->myif.ifra_addr.sa_family, &so, nd->root_args.sotype, 0,
407 panic("nfs_mountroot: socreate(%04x): %d",
408 nd->myif.ifra_addr.sa_family, error);
410 #if 0 /* XXX Bad idea */
412 * We might not have been told the right interface, so we pass
413 * over the first ten interfaces of the same kind, until we get
414 * one of them configured.
417 for (i = strlen(nd->myif.ifra_name) - 1;
418 nd->myif.ifra_name[i] >= '0' &&
419 nd->myif.ifra_name[i] <= '9';
420 nd->myif.ifra_name[i] ++) {
421 error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, td);
426 error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, td);
428 panic("nfs_mountroot: SIOCAIFADDR: %d", error);
429 if ((cp = getenv("boot.netif.mtu")) != NULL) {
430 ir.ifr_mtu = strtol(cp, NULL, 10);
431 bcopy(nd->myif.ifra_name, ir.ifr_name, IFNAMSIZ);
433 error = ifioctl(so, SIOCSIFMTU, (caddr_t)&ir, td);
435 printf("nfs_mountroot: SIOCSIFMTU: %d", error);
440 * If the gateway field is filled in, set it as the default route.
441 * Note that pxeboot will set a default route of 0 if the route
442 * is not set by the DHCP server. Check also for a value of 0
443 * to avoid panicking inappropriately in that situation.
445 if (nd->mygateway.sin_len != 0 &&
446 nd->mygateway.sin_addr.s_addr != 0) {
447 struct sockaddr_in mask, sin;
449 bzero((caddr_t)&mask, sizeof(mask));
451 sin.sin_family = AF_INET;
452 sin.sin_len = sizeof(sin);
453 /* XXX MRT use table 0 for this sort of thing */
454 error = rtrequest(RTM_ADD, (struct sockaddr *)&sin,
455 (struct sockaddr *)&nd->mygateway,
456 (struct sockaddr *)&mask,
457 RTF_UP | RTF_GATEWAY, NULL);
459 panic("nfs_mountroot: RTM_ADD: %d", error);
463 * Create the rootfs mount point.
465 nd->root_args.fh = nd->root_fh;
466 nd->root_args.fhsize = nd->root_fhsize;
467 l = ntohl(nd->root_saddr.sin_addr.s_addr);
468 snprintf(buf, sizeof(buf), "%ld.%ld.%ld.%ld:%s",
469 (l >> 24) & 0xff, (l >> 16) & 0xff,
470 (l >> 8) & 0xff, (l >> 0) & 0xff, nd->root_hostnam);
471 printf("NFS ROOT: %s\n", buf);
472 nd->root_args.hostname = buf;
473 if ((error = nfs_mountdiskless(buf,
474 &nd->root_saddr, &nd->root_args, td, &vp, mp)) != 0) {
479 * This is not really an nfs issue, but it is much easier to
480 * set hostname here and then let the "/etc/rc.xxx" files
481 * mount the right /var based upon its preset value.
483 mtx_lock(&prison0.pr_mtx);
484 strlcpy(prison0.pr_hostname, nd->my_hostnam,
485 sizeof(prison0.pr_hostname));
486 mtx_unlock(&prison0.pr_mtx);
487 inittodr(ntohl(nd->root_time));
492 * Internal version of mount system call for diskless setup.
495 nfs_mountdiskless(char *path,
496 struct sockaddr_in *sin, struct nfs_args *args, struct thread *td,
497 struct vnode **vpp, struct mount *mp)
499 struct sockaddr *nam;
502 nam = sodupsockaddr((struct sockaddr *)sin, M_WAITOK);
503 if ((error = mountnfs(args, mp, nam, path, NULL, NULL, NULL, vpp,
504 td->td_ucred, td, NFS_DEFAULT_NEGNAMETIMEO)) != 0) {
505 printf("nfs_mountroot: mount %s on /: %d\n", path, error);
512 nfs_sec_name(char *sec, int *flagsp)
514 if (!strcmp(sec, "krb5"))
515 *flagsp |= NFSMNT_KERB;
516 else if (!strcmp(sec, "krb5i"))
517 *flagsp |= (NFSMNT_KERB | NFSMNT_INTEGRITY);
518 else if (!strcmp(sec, "krb5p"))
519 *flagsp |= (NFSMNT_KERB | NFSMNT_PRIVACY);
523 nfs_decode_args(struct mount *mp, struct nfsmount *nmp, struct nfs_args *argp,
524 const char *hostname, struct ucred *cred, struct thread *td)
533 * Set read-only flag if requested; otherwise, clear it if this is
534 * an update. If this is not an update, then either the read-only
535 * flag is already clear, or this is a root mount and it was set
536 * intentionally at some previous point.
538 if (vfs_getopt(mp->mnt_optnew, "ro", NULL, NULL) == 0) {
540 mp->mnt_flag |= MNT_RDONLY;
542 } else if (mp->mnt_flag & MNT_UPDATE) {
544 mp->mnt_flag &= ~MNT_RDONLY;
549 * Silently clear NFSMNT_NOCONN if it's a TCP mount, it makes
550 * no sense in that context. Also, set up appropriate retransmit
551 * and soft timeout behavior.
553 if (argp->sotype == SOCK_STREAM) {
554 nmp->nm_flag &= ~NFSMNT_NOCONN;
555 nmp->nm_timeo = NFS_MAXTIMEO;
558 /* Also clear RDIRPLUS if not NFSv3, it crashes some servers */
559 if ((argp->flags & NFSMNT_NFSV3) == 0)
560 nmp->nm_flag &= ~NFSMNT_RDIRPLUS;
562 /* Also re-bind if we're switching to/from a connected UDP socket */
563 adjsock = ((nmp->nm_flag & NFSMNT_NOCONN) !=
564 (argp->flags & NFSMNT_NOCONN));
566 /* Update flags atomically. Don't change the lock bits. */
567 nmp->nm_flag = argp->flags | nmp->nm_flag;
570 if ((argp->flags & NFSMNT_TIMEO) && argp->timeo > 0) {
571 nmp->nm_timeo = (argp->timeo * NFS_HZ + 5) / 10;
572 if (nmp->nm_timeo < NFS_MINTIMEO)
573 nmp->nm_timeo = NFS_MINTIMEO;
574 else if (nmp->nm_timeo > NFS_MAXTIMEO)
575 nmp->nm_timeo = NFS_MAXTIMEO;
578 if ((argp->flags & NFSMNT_RETRANS) && argp->retrans > 1) {
579 nmp->nm_retry = argp->retrans;
580 if (nmp->nm_retry > NFS_MAXREXMIT)
581 nmp->nm_retry = NFS_MAXREXMIT;
584 if ((argp->flags & NFSMNT_WSIZE) && argp->wsize > 0) {
585 nmp->nm_wsize = argp->wsize;
586 /* Round down to multiple of blocksize */
587 nmp->nm_wsize &= ~(NFS_FABLKSIZE - 1);
588 if (nmp->nm_wsize <= 0)
589 nmp->nm_wsize = NFS_FABLKSIZE;
592 if ((argp->flags & NFSMNT_RSIZE) && argp->rsize > 0) {
593 nmp->nm_rsize = argp->rsize;
594 /* Round down to multiple of blocksize */
595 nmp->nm_rsize &= ~(NFS_FABLKSIZE - 1);
596 if (nmp->nm_rsize <= 0)
597 nmp->nm_rsize = NFS_FABLKSIZE;
600 if ((argp->flags & NFSMNT_READDIRSIZE) && argp->readdirsize > 0) {
601 nmp->nm_readdirsize = argp->readdirsize;
604 if ((argp->flags & NFSMNT_ACREGMIN) && argp->acregmin >= 0)
605 nmp->nm_acregmin = argp->acregmin;
607 nmp->nm_acregmin = NFS_MINATTRTIMO;
608 if ((argp->flags & NFSMNT_ACREGMAX) && argp->acregmax >= 0)
609 nmp->nm_acregmax = argp->acregmax;
611 nmp->nm_acregmax = NFS_MAXATTRTIMO;
612 if ((argp->flags & NFSMNT_ACDIRMIN) && argp->acdirmin >= 0)
613 nmp->nm_acdirmin = argp->acdirmin;
615 nmp->nm_acdirmin = NFS_MINDIRATTRTIMO;
616 if ((argp->flags & NFSMNT_ACDIRMAX) && argp->acdirmax >= 0)
617 nmp->nm_acdirmax = argp->acdirmax;
619 nmp->nm_acdirmax = NFS_MAXDIRATTRTIMO;
620 if (nmp->nm_acdirmin > nmp->nm_acdirmax)
621 nmp->nm_acdirmin = nmp->nm_acdirmax;
622 if (nmp->nm_acregmin > nmp->nm_acregmax)
623 nmp->nm_acregmin = nmp->nm_acregmax;
625 if ((argp->flags & NFSMNT_READAHEAD) && argp->readahead >= 0) {
626 if (argp->readahead <= NFS_MAXRAHEAD)
627 nmp->nm_readahead = argp->readahead;
629 nmp->nm_readahead = NFS_MAXRAHEAD;
631 if ((argp->flags & NFSMNT_WCOMMITSIZE) && argp->wcommitsize >= 0) {
632 if (argp->wcommitsize < nmp->nm_wsize)
633 nmp->nm_wcommitsize = nmp->nm_wsize;
635 nmp->nm_wcommitsize = argp->wcommitsize;
638 adjsock |= ((nmp->nm_sotype != argp->sotype) ||
639 (nmp->nm_soproto != argp->proto));
641 if (nmp->nm_client != NULL && adjsock) {
642 int haslock = 0, error = 0;
644 if (nmp->nm_sotype == SOCK_STREAM) {
645 error = newnfs_sndlock(&nmp->nm_sockreq.nr_lock);
650 newnfs_disconnect(&nmp->nm_sockreq);
652 newnfs_sndunlock(&nmp->nm_sockreq.nr_lock);
653 nmp->nm_sotype = argp->sotype;
654 nmp->nm_soproto = argp->proto;
655 if (nmp->nm_sotype == SOCK_DGRAM)
656 while (newnfs_connect(nmp, &nmp->nm_sockreq,
658 printf("newnfs_args: retrying connect\n");
659 (void) nfs_catnap(PSOCK, 0, "newnfscon");
663 nmp->nm_sotype = argp->sotype;
664 nmp->nm_soproto = argp->proto;
667 if (hostname != NULL) {
668 strlcpy(nmp->nm_hostname, hostname,
669 sizeof(nmp->nm_hostname));
670 p = strchr(nmp->nm_hostname, ':');
676 static const char *nfs_opts[] = { "from",
677 "noatime", "noexec", "suiddir", "nosuid", "nosymfollow", "union",
678 "noclusterr", "noclusterw", "multilabel", "acls", "force", "update",
679 "async", "noconn", "nolockd", "conn", "lockd", "intr", "rdirplus",
680 "readdirsize", "soft", "hard", "mntudp", "tcp", "udp", "wsize", "rsize",
681 "retrans", "acregmin", "acregmax", "acdirmin", "acdirmax", "resvport",
682 "readahead", "hostname", "timeout", "addr", "fh", "nfsv3", "sec",
683 "principal", "nfsv4", "gssname", "allgssname", "dirpath",
691 * It seems a bit dumb to copyinstr() the host and path here and then
692 * bcopy() them in mountnfs(), but I wanted to detect errors before
693 * doing the sockargs() call because sockargs() allocates an mbuf and
694 * an error after that means that I have to release the mbuf.
698 nfs_mount(struct mount *mp)
700 struct nfs_args args = {
701 .version = NFS_ARGSVERSION,
703 .addrlen = sizeof (struct sockaddr_in),
704 .sotype = SOCK_STREAM,
711 .readdirsize = NFS_READDIRSIZE,
713 .retrans = NFS_RETRANS,
714 .readahead = NFS_DEFRAHEAD,
715 .wcommitsize = 0, /* was: NQ_DEFLEASE */
718 .acregmin = NFS_MINATTRTIMO,
719 .acregmax = NFS_MAXATTRTIMO,
720 .acdirmin = NFS_MINDIRATTRTIMO,
721 .acdirmax = NFS_MAXDIRATTRTIMO,
726 int error = 0, ret, len;
727 struct sockaddr *nam = NULL;
731 u_char nfh[NFSX_FHMAX], krbname[100], dirpath[100], srvkrbname[100];
732 char *opt, *name, *secname;
733 int negnametimeo = NFS_DEFAULT_NEGNAMETIMEO;
735 if (vfs_filteropt(mp->mnt_optnew, nfs_opts)) {
741 if ((mp->mnt_flag & (MNT_ROOTFS | MNT_UPDATE)) == MNT_ROOTFS) {
742 error = ncl_mountroot(mp);
748 /* Handle the new style options. */
749 if (vfs_getopt(mp->mnt_optnew, "noconn", NULL, NULL) == 0)
750 args.flags |= NFSMNT_NOCONN;
751 if (vfs_getopt(mp->mnt_optnew, "conn", NULL, NULL) == 0)
752 args.flags |= NFSMNT_NOCONN;
753 if (vfs_getopt(mp->mnt_optnew, "nolockd", NULL, NULL) == 0)
754 args.flags |= NFSMNT_NOLOCKD;
755 if (vfs_getopt(mp->mnt_optnew, "lockd", NULL, NULL) == 0)
756 args.flags &= ~NFSMNT_NOLOCKD;
757 if (vfs_getopt(mp->mnt_optnew, "intr", NULL, NULL) == 0)
758 args.flags |= NFSMNT_INT;
759 if (vfs_getopt(mp->mnt_optnew, "rdirplus", NULL, NULL) == 0)
760 args.flags |= NFSMNT_RDIRPLUS;
761 if (vfs_getopt(mp->mnt_optnew, "resvport", NULL, NULL) == 0)
762 args.flags |= NFSMNT_RESVPORT;
763 if (vfs_getopt(mp->mnt_optnew, "noresvport", NULL, NULL) == 0)
764 args.flags &= ~NFSMNT_RESVPORT;
765 if (vfs_getopt(mp->mnt_optnew, "soft", NULL, NULL) == 0)
766 args.flags |= NFSMNT_SOFT;
767 if (vfs_getopt(mp->mnt_optnew, "hard", NULL, NULL) == 0)
768 args.flags &= ~NFSMNT_SOFT;
769 if (vfs_getopt(mp->mnt_optnew, "mntudp", NULL, NULL) == 0)
770 args.sotype = SOCK_DGRAM;
771 if (vfs_getopt(mp->mnt_optnew, "udp", NULL, NULL) == 0)
772 args.sotype = SOCK_DGRAM;
773 if (vfs_getopt(mp->mnt_optnew, "tcp", NULL, NULL) == 0)
774 args.sotype = SOCK_STREAM;
775 if (vfs_getopt(mp->mnt_optnew, "nfsv3", NULL, NULL) == 0)
776 args.flags |= NFSMNT_NFSV3;
777 if (vfs_getopt(mp->mnt_optnew, "nfsv4", NULL, NULL) == 0) {
778 args.flags |= NFSMNT_NFSV4;
779 args.sotype = SOCK_STREAM;
781 if (vfs_getopt(mp->mnt_optnew, "allgssname", NULL, NULL) == 0)
782 args.flags |= NFSMNT_ALLGSSNAME;
783 if (vfs_getopt(mp->mnt_optnew, "readdirsize", (void **)&opt, NULL) == 0) {
785 vfs_mount_error(mp, "illegal readdirsize");
789 ret = sscanf(opt, "%d", &args.readdirsize);
790 if (ret != 1 || args.readdirsize <= 0) {
791 vfs_mount_error(mp, "illegal readdirsize: %s",
796 args.flags |= NFSMNT_READDIRSIZE;
798 if (vfs_getopt(mp->mnt_optnew, "readahead", (void **)&opt, NULL) == 0) {
800 vfs_mount_error(mp, "illegal readahead");
804 ret = sscanf(opt, "%d", &args.readahead);
805 if (ret != 1 || args.readahead <= 0) {
806 vfs_mount_error(mp, "illegal readahead: %s",
811 args.flags |= NFSMNT_READAHEAD;
813 if (vfs_getopt(mp->mnt_optnew, "wsize", (void **)&opt, NULL) == 0) {
815 vfs_mount_error(mp, "illegal wsize");
819 ret = sscanf(opt, "%d", &args.wsize);
820 if (ret != 1 || args.wsize <= 0) {
821 vfs_mount_error(mp, "illegal wsize: %s",
826 args.flags |= NFSMNT_WSIZE;
828 if (vfs_getopt(mp->mnt_optnew, "rsize", (void **)&opt, NULL) == 0) {
830 vfs_mount_error(mp, "illegal rsize");
834 ret = sscanf(opt, "%d", &args.rsize);
835 if (ret != 1 || args.rsize <= 0) {
836 vfs_mount_error(mp, "illegal wsize: %s",
841 args.flags |= NFSMNT_RSIZE;
843 if (vfs_getopt(mp->mnt_optnew, "retrans", (void **)&opt, NULL) == 0) {
845 vfs_mount_error(mp, "illegal retrans");
849 ret = sscanf(opt, "%d", &args.retrans);
850 if (ret != 1 || args.retrans <= 0) {
851 vfs_mount_error(mp, "illegal retrans: %s",
856 args.flags |= NFSMNT_RETRANS;
858 if (vfs_getopt(mp->mnt_optnew, "acregmin", (void **)&opt, NULL) == 0) {
859 ret = sscanf(opt, "%d", &args.acregmin);
860 if (ret != 1 || args.acregmin < 0) {
861 vfs_mount_error(mp, "illegal acregmin: %s",
866 args.flags |= NFSMNT_ACREGMIN;
868 if (vfs_getopt(mp->mnt_optnew, "acregmax", (void **)&opt, NULL) == 0) {
869 ret = sscanf(opt, "%d", &args.acregmax);
870 if (ret != 1 || args.acregmax < 0) {
871 vfs_mount_error(mp, "illegal acregmax: %s",
876 args.flags |= NFSMNT_ACREGMAX;
878 if (vfs_getopt(mp->mnt_optnew, "acdirmin", (void **)&opt, NULL) == 0) {
879 ret = sscanf(opt, "%d", &args.acdirmin);
880 if (ret != 1 || args.acdirmin < 0) {
881 vfs_mount_error(mp, "illegal acdirmin: %s",
886 args.flags |= NFSMNT_ACDIRMIN;
888 if (vfs_getopt(mp->mnt_optnew, "acdirmax", (void **)&opt, NULL) == 0) {
889 ret = sscanf(opt, "%d", &args.acdirmax);
890 if (ret != 1 || args.acdirmax < 0) {
891 vfs_mount_error(mp, "illegal acdirmax: %s",
896 args.flags |= NFSMNT_ACDIRMAX;
898 if (vfs_getopt(mp->mnt_optnew, "timeout", (void **)&opt, NULL) == 0) {
899 ret = sscanf(opt, "%d", &args.timeo);
900 if (ret != 1 || args.timeo <= 0) {
901 vfs_mount_error(mp, "illegal timeout: %s",
906 args.flags |= NFSMNT_TIMEO;
908 if (vfs_getopt(mp->mnt_optnew, "negnametimeo", (void **)&opt, NULL)
910 ret = sscanf(opt, "%d", &negnametimeo);
911 if (ret != 1 || negnametimeo < 0) {
912 vfs_mount_error(mp, "illegal negnametimeo: %s",
918 if (vfs_getopt(mp->mnt_optnew, "sec",
919 (void **) &secname, NULL) == 0)
920 nfs_sec_name(secname, &args.flags);
922 if (mp->mnt_flag & MNT_UPDATE) {
923 struct nfsmount *nmp = VFSTONFS(mp);
930 * When doing an update, we can't change version,
931 * security, switch lockd strategies or change cookie
934 args.flags = (args.flags &
940 NFSMNT_NOLOCKD /*|NFSMNT_XLATECOOKIE*/)) |
947 NFSMNT_NOLOCKD /*|NFSMNT_XLATECOOKIE*/));
948 nfs_decode_args(mp, nmp, &args, NULL, td->td_ucred, td);
953 * Make the nfs_ip_paranoia sysctl serve as the default connection
954 * or no-connection mode for those protocols that support
955 * no-connection mode (the flag will be cleared later for protocols
956 * that do not support no-connection mode). This will allow a client
957 * to receive replies from a different IP then the request was
958 * sent to. Note: default value for nfs_ip_paranoia is 1 (paranoid),
961 if (nfs_ip_paranoia == 0)
962 args.flags |= NFSMNT_NOCONN;
964 if (vfs_getopt(mp->mnt_optnew, "fh", (void **)&args.fh,
965 &args.fhsize) == 0) {
966 if (args.fhsize < 0 || args.fhsize > NFSX_FHMAX) {
967 vfs_mount_error(mp, "Bad file handle");
971 bcopy(args.fh, nfh, args.fhsize);
976 (void) vfs_getopt(mp->mnt_optnew, "hostname", (void **)&args.hostname,
978 if (args.hostname == NULL) {
979 vfs_mount_error(mp, "Invalid hostname");
983 bcopy(args.hostname, hst, MNAMELEN);
984 hst[MNAMELEN - 1] = '\0';
986 if (vfs_getopt(mp->mnt_optnew, "principal", (void **)&name, NULL) == 0)
987 strlcpy(srvkrbname, name, sizeof (srvkrbname));
989 snprintf(srvkrbname, sizeof (srvkrbname), "nfs@%s", hst);
990 args.srvkrbnamelen = strlen(srvkrbname);
992 if (vfs_getopt(mp->mnt_optnew, "gssname", (void **)&name, NULL) == 0)
993 strlcpy(krbname, name, sizeof (krbname));
996 args.krbnamelen = strlen(krbname);
998 if (vfs_getopt(mp->mnt_optnew, "dirpath", (void **)&name, NULL) == 0)
999 strlcpy(dirpath, name, sizeof (dirpath));
1002 args.dirlen = strlen(dirpath);
1004 if (vfs_getopt(mp->mnt_optnew, "addr", (void **)&args.addr,
1005 &args.addrlen) == 0) {
1006 if (args.addrlen > SOCK_MAXADDRLEN) {
1007 error = ENAMETOOLONG;
1010 nam = malloc(args.addrlen, M_SONAME, M_WAITOK);
1011 bcopy(args.addr, nam, args.addrlen);
1012 nam->sa_len = args.addrlen;
1016 error = mountnfs(&args, mp, nam, hst, krbname, dirpath, srvkrbname,
1017 &vp, td->td_ucred, td, negnametimeo);
1021 mp->mnt_kern_flag |= (MNTK_MPSAFE|MNTK_LOOKUP_SHARED);
1032 * It seems a bit dumb to copyinstr() the host and path here and then
1033 * bcopy() them in mountnfs(), but I wanted to detect errors before
1034 * doing the sockargs() call because sockargs() allocates an mbuf and
1035 * an error after that means that I have to release the mbuf.
1039 nfs_cmount(struct mntarg *ma, void *data, int flags)
1042 struct nfs_args args;
1044 error = copyin(data, &args, sizeof (struct nfs_args));
1048 ma = mount_arg(ma, "nfs_args", &args, sizeof args);
1050 error = kernel_mount(ma, flags);
1055 * Common code for mount and mountroot
1058 mountnfs(struct nfs_args *argp, struct mount *mp, struct sockaddr *nam,
1059 char *hst, u_char *krbname, u_char *dirpath, u_char *srvkrbname,
1060 struct vnode **vpp, struct ucred *cred, struct thread *td,
1063 struct nfsmount *nmp;
1065 int error, trycnt, ret;
1066 struct nfsvattr nfsva;
1067 static u_int64_t clval = 0;
1069 if (mp->mnt_flag & MNT_UPDATE) {
1071 printf("%s: MNT_UPDATE is no longer handled here\n", __func__);
1072 FREE(nam, M_SONAME);
1075 MALLOC(nmp, struct nfsmount *, sizeof (struct nfsmount) +
1076 argp->krbnamelen + argp->dirlen + argp->srvkrbnamelen + 2,
1077 M_NEWNFSMNT, M_WAITOK);
1078 bzero((caddr_t)nmp, sizeof (struct nfsmount) +
1079 argp->krbnamelen + argp->dirlen + argp->srvkrbnamelen + 2);
1080 TAILQ_INIT(&nmp->nm_bufq);
1082 clval = (u_int64_t)nfsboottime.tv_sec;
1083 nmp->nm_clval = clval++;
1084 nmp->nm_krbnamelen = argp->krbnamelen;
1085 nmp->nm_dirpathlen = argp->dirlen;
1086 nmp->nm_srvkrbnamelen = argp->srvkrbnamelen;
1087 if (td->td_ucred->cr_uid != (uid_t)0) {
1089 * nm_uid is used to get KerberosV credentials for
1090 * the nfsv4 state handling operations if there is
1091 * no host based principal set. Use the uid of
1092 * this user if not root, since they are doing the
1093 * mount. I don't think setting this for root will
1094 * work, since root normally does not have user
1095 * credentials in a credentials cache.
1097 nmp->nm_uid = td->td_ucred->cr_uid;
1100 * Just set to -1, so it won't be used.
1102 nmp->nm_uid = (uid_t)-1;
1105 /* Copy and null terminate all the names */
1106 if (nmp->nm_krbnamelen > 0) {
1107 bcopy(krbname, nmp->nm_krbname, nmp->nm_krbnamelen);
1108 nmp->nm_name[nmp->nm_krbnamelen] = '\0';
1110 if (nmp->nm_dirpathlen > 0) {
1111 bcopy(dirpath, NFSMNT_DIRPATH(nmp),
1112 nmp->nm_dirpathlen);
1113 nmp->nm_name[nmp->nm_krbnamelen + nmp->nm_dirpathlen
1116 if (nmp->nm_srvkrbnamelen > 0) {
1117 bcopy(srvkrbname, NFSMNT_SRVKRBNAME(nmp),
1118 nmp->nm_srvkrbnamelen);
1119 nmp->nm_name[nmp->nm_krbnamelen + nmp->nm_dirpathlen
1120 + nmp->nm_srvkrbnamelen + 2] = '\0';
1122 nmp->nm_sockreq.nr_cred = crhold(cred);
1123 mtx_init(&nmp->nm_sockreq.nr_mtx, "nfssock", NULL, MTX_DEF);
1125 nmp->nm_getinfo = nfs_getnlminfo;
1128 nmp->nm_mountp = mp;
1129 mtx_init(&nmp->nm_mtx, "NFSmount lock", NULL, MTX_DEF | MTX_DUPOK);
1130 nmp->nm_negnametimeo = negnametimeo;
1132 nfs_decode_args(mp, nmp, argp, hst, cred, td);
1135 * V2 can only handle 32 bit filesizes. A 4GB-1 limit may be too
1136 * high, depending on whether we end up with negative offsets in
1137 * the client or server somewhere. 2GB-1 may be safer.
1139 * For V3, ncl_fsinfo will adjust this as necessary. Assume maximum
1140 * that we can handle until we find out otherwise.
1141 * XXX Our "safe" limit on the client is what we can store in our
1142 * buffer cache using signed(!) block numbers.
1144 if ((argp->flags & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) == 0)
1145 nmp->nm_maxfilesize = 0xffffffffLL;
1147 nmp->nm_maxfilesize = (u_int64_t)0x80000000 * DEV_BSIZE - 1;
1149 nmp->nm_timeo = NFS_TIMEO;
1150 nmp->nm_retry = NFS_RETRANS;
1151 if ((argp->flags & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) == 0) {
1152 nmp->nm_wsize = NFS_WSIZE;
1153 nmp->nm_rsize = NFS_RSIZE;
1154 nmp->nm_readdirsize = NFS_READDIRSIZE;
1156 nmp->nm_wcommitsize = hibufspace / (desiredvnodes / 1000);
1157 nmp->nm_numgrps = NFS_MAXGRPS;
1158 nmp->nm_readahead = NFS_DEFRAHEAD;
1159 nmp->nm_tprintf_delay = nfs_tprintf_delay;
1160 if (nmp->nm_tprintf_delay < 0)
1161 nmp->nm_tprintf_delay = 0;
1162 nmp->nm_tprintf_initial_delay = nfs_tprintf_initial_delay;
1163 if (nmp->nm_tprintf_initial_delay < 0)
1164 nmp->nm_tprintf_initial_delay = 0;
1165 nmp->nm_fhsize = argp->fhsize;
1166 if (nmp->nm_fhsize > 0)
1167 bcopy((caddr_t)argp->fh, (caddr_t)nmp->nm_fh, argp->fhsize);
1168 bcopy(hst, mp->mnt_stat.f_mntfromname, MNAMELEN);
1170 /* Set up the sockets and per-host congestion */
1171 nmp->nm_sotype = argp->sotype;
1172 nmp->nm_soproto = argp->proto;
1173 nmp->nm_sockreq.nr_prog = NFS_PROG;
1174 if ((argp->flags & NFSMNT_NFSV4))
1175 nmp->nm_sockreq.nr_vers = NFS_VER4;
1176 else if ((argp->flags & NFSMNT_NFSV3))
1177 nmp->nm_sockreq.nr_vers = NFS_VER3;
1179 nmp->nm_sockreq.nr_vers = NFS_VER2;
1182 if ((error = newnfs_connect(nmp, &nmp->nm_sockreq, cred, td, 0)))
1186 * A reference count is needed on the nfsnode representing the
1187 * remote root. If this object is not persistent, then backward
1188 * traversals of the mount point (i.e. "..") will not work if
1189 * the nfsnode gets flushed out of the cache. Ufs does not have
1190 * this problem, because one can identify root inodes by their
1191 * number == ROOTINO (2).
1193 if (nmp->nm_fhsize == 0 && (nmp->nm_flag & NFSMNT_NFSV4) &&
1194 nmp->nm_dirpathlen > 0) {
1196 * If the fhsize on the mount point == 0 for V4, the mount
1197 * path needs to be looked up.
1201 error = nfsrpc_getdirpath(nmp, NFSMNT_DIRPATH(nmp),
1204 (void) nfs_catnap(PZERO, error, "nfsgetdirp");
1205 } while (error && --trycnt > 0);
1207 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
1211 if (nmp->nm_fhsize > 0) {
1213 * Set f_iosize to NFS_DIRBLKSIZ so that bo_bsize gets set
1214 * non-zero for the root vnode. f_iosize will be set correctly
1215 * by nfs_statfs() before any I/O occurs.
1217 mp->mnt_stat.f_iosize = NFS_DIRBLKSIZ;
1218 error = ncl_nget(mp, nmp->nm_fh, nmp->nm_fhsize, &np);
1224 * Get file attributes and transfer parameters for the
1225 * mountpoint. This has the side effect of filling in
1226 * (*vpp)->v_type with the correct value.
1228 ret = nfsrpc_getattrnovp(nmp, nmp->nm_fh, nmp->nm_fhsize, 1,
1229 cred, td, &nfsva, NULL);
1232 * Just set default values to get things going.
1234 NFSBZERO((caddr_t)&nfsva, sizeof (struct nfsvattr));
1235 nfsva.na_vattr.va_type = VDIR;
1236 nfsva.na_vattr.va_mode = 0777;
1237 nfsva.na_vattr.va_nlink = 100;
1238 nfsva.na_vattr.va_uid = (uid_t)0;
1239 nfsva.na_vattr.va_gid = (gid_t)0;
1240 nfsva.na_vattr.va_fileid = 2;
1241 nfsva.na_vattr.va_gen = 1;
1242 nfsva.na_vattr.va_blocksize = NFS_FABLKSIZE;
1243 nfsva.na_vattr.va_size = 512 * 1024;
1245 (void) nfscl_loadattrcache(vpp, &nfsva, NULL, NULL, 0, 1);
1246 if (argp->flags & NFSMNT_NFSV3)
1247 ncl_fsinfo(nmp, *vpp, cred, td);
1250 * Lose the lock but keep the ref.
1252 VOP_UNLOCK(*vpp, 0);
1258 newnfs_disconnect(&nmp->nm_sockreq);
1259 crfree(nmp->nm_sockreq.nr_cred);
1260 mtx_destroy(&nmp->nm_sockreq.nr_mtx);
1261 mtx_destroy(&nmp->nm_mtx);
1262 FREE(nmp, M_NEWNFSMNT);
1263 FREE(nam, M_SONAME);
1268 * unmount system call
1271 nfs_unmount(struct mount *mp, int mntflags)
1274 struct nfsmount *nmp;
1275 int error, flags = 0, trycnt = 0;
1279 if (mntflags & MNT_FORCE)
1280 flags |= FORCECLOSE;
1283 * Goes something like this..
1284 * - Call vflush() to clear out vnodes for this filesystem
1285 * - Close the socket
1286 * - Free up the data structures
1288 /* In the forced case, cancel any outstanding requests. */
1289 if (mntflags & MNT_FORCE) {
1290 error = newnfs_nmcancelreqs(nmp);
1293 /* For a forced close, get rid of the renew thread now */
1294 nfscl_umount(nmp, td);
1296 /* We hold 1 extra ref on the root vnode; see comment in mountnfs(). */
1298 error = vflush(mp, 1, flags, td);
1299 if ((mntflags & MNT_FORCE) && error != 0 && ++trycnt < 30)
1300 (void) nfs_catnap(PSOCK, error, "newndm");
1301 } while ((mntflags & MNT_FORCE) && error != 0 && trycnt < 30);
1306 * We are now committed to the unmount.
1308 if ((mntflags & MNT_FORCE) == 0)
1309 nfscl_umount(nmp, td);
1310 newnfs_disconnect(&nmp->nm_sockreq);
1311 crfree(nmp->nm_sockreq.nr_cred);
1312 FREE(nmp->nm_nam, M_SONAME);
1314 mtx_destroy(&nmp->nm_sockreq.nr_mtx);
1315 mtx_destroy(&nmp->nm_mtx);
1316 FREE(nmp, M_NEWNFSMNT);
1322 * Return root of a filesystem
1325 nfs_root(struct mount *mp, int flags, struct vnode **vpp)
1328 struct nfsmount *nmp;
1333 error = ncl_nget(mp, nmp->nm_fh, nmp->nm_fhsize, &np);
1338 * Get transfer parameters and attributes for root vnode once.
1340 mtx_lock(&nmp->nm_mtx);
1341 if (NFSHASNFSV3(nmp) && !NFSHASGOTFSINFO(nmp)) {
1342 mtx_unlock(&nmp->nm_mtx);
1343 ncl_fsinfo(nmp, vp, curthread->td_ucred, curthread);
1345 mtx_unlock(&nmp->nm_mtx);
1346 if (vp->v_type == VNON)
1348 vp->v_vflag |= VV_ROOT;
1354 * Flush out the buffer cache
1358 nfs_sync(struct mount *mp, int waitfor)
1360 struct vnode *vp, *mvp;
1362 int error, allerror = 0;
1367 * Force stale buffer cache information to be flushed.
1371 MNT_VNODE_FOREACH(vp, mp, mvp) {
1374 /* XXX Racy bv_cnt check. */
1375 if (VOP_ISLOCKED(vp) || vp->v_bufobj.bo_dirty.bv_cnt == 0 ||
1376 waitfor == MNT_LAZY) {
1381 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td)) {
1383 MNT_VNODE_FOREACH_ABORT_ILOCKED(mp, mvp);
1386 error = VOP_FSYNC(vp, waitfor, td);
1399 nfs_sysctl(struct mount *mp, fsctlop_t op, struct sysctl_req *req)
1401 struct nfsmount *nmp = VFSTONFS(mp);
1405 bzero(&vq, sizeof(vq));
1408 case VFS_CTL_NOLOCKS:
1409 val = (nmp->nm_flag & NFSMNT_NOLOCKS) ? 1 : 0;
1410 if (req->oldptr != NULL) {
1411 error = SYSCTL_OUT(req, &val, sizeof(val));
1415 if (req->newptr != NULL) {
1416 error = SYSCTL_IN(req, &val, sizeof(val));
1420 nmp->nm_flag |= NFSMNT_NOLOCKS;
1422 nmp->nm_flag &= ~NFSMNT_NOLOCKS;
1427 mtx_lock(&nmp->nm_mtx);
1428 if (nmp->nm_state & NFSSTA_TIMEO)
1429 vq.vq_flags |= VQ_NOTRESP;
1430 mtx_unlock(&nmp->nm_mtx);
1432 if (!(nmp->nm_flag & NFSMNT_NOLOCKS) &&
1433 (nmp->nm_state & NFSSTA_LOCKTIMEO))
1434 vq.vq_flags |= VQ_NOTRESPLOCK;
1436 error = SYSCTL_OUT(req, &vq, sizeof(vq));
1439 if (req->oldptr != NULL) {
1440 error = SYSCTL_OUT(req, &nmp->nm_tprintf_initial_delay,
1441 sizeof(nmp->nm_tprintf_initial_delay));
1445 if (req->newptr != NULL) {
1446 error = vfs_suser(mp, req->td);
1449 error = SYSCTL_IN(req, &nmp->nm_tprintf_initial_delay,
1450 sizeof(nmp->nm_tprintf_initial_delay));
1453 if (nmp->nm_tprintf_initial_delay < 0)
1454 nmp->nm_tprintf_initial_delay = 0;
1464 * Extract the information needed by the nlm from the nfs vnode.
1467 nfs_getnlminfo(struct vnode *vp, uint8_t *fhp, size_t *fhlenp,
1468 struct sockaddr_storage *sp, int *is_v3p, off_t *sizep)
1470 struct nfsmount *nmp;
1471 struct nfsnode *np = VTONFS(vp);
1473 nmp = VFSTONFS(vp->v_mount);
1475 *fhlenp = (size_t)np->n_fhp->nfh_len;
1477 bcopy(np->n_fhp->nfh_fh, fhp, np->n_fhp->nfh_len);
1479 bcopy(nmp->nm_nam, sp, min(nmp->nm_nam->sa_len, sizeof(*sp)));
1481 *is_v3p = NFS_ISV3(vp);
1483 *sizep = np->n_size;