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>
49 #include <sys/limits.h>
51 #include <sys/malloc.h>
53 #include <sys/module.h>
54 #include <sys/mount.h>
56 #include <sys/socket.h>
57 #include <sys/socketvar.h>
58 #include <sys/sockio.h>
59 #include <sys/sysctl.h>
60 #include <sys/vnode.h>
61 #include <sys/signalvar.h>
64 #include <vm/vm_extern.h>
68 #include <net/route.h>
69 #include <netinet/in.h>
71 #include <fs/nfs/nfsport.h>
72 #include <fs/nfsclient/nfsnode.h>
73 #include <fs/nfsclient/nfsmount.h>
74 #include <fs/nfsclient/nfs.h>
75 #include <nfs/nfsdiskless.h>
77 FEATURE(nfscl, "NFSv4 client");
79 extern int nfscl_ticks;
80 extern struct timeval nfsboottime;
81 extern struct nfsstats newnfsstats;
82 extern int nfsrv_useacl;
83 extern int nfscl_debuglevel;
84 extern enum nfsiod_state ncl_iodwant[NFS_MAXASYNCDAEMON];
85 extern struct nfsmount *ncl_iodmount[NFS_MAXASYNCDAEMON];
86 extern struct mtx ncl_iod_mutex;
89 MALLOC_DEFINE(M_NEWNFSREQ, "newnfsclient_req", "New NFS request header");
90 MALLOC_DEFINE(M_NEWNFSMNT, "newnfsmnt", "New NFS mount struct");
92 SYSCTL_DECL(_vfs_nfs);
93 static int nfs_ip_paranoia = 1;
94 SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs_ip_paranoia, CTLFLAG_RW,
95 &nfs_ip_paranoia, 0, "");
96 static int nfs_tprintf_initial_delay = NFS_TPRINTF_INITIAL_DELAY;
97 SYSCTL_INT(_vfs_nfs, NFS_TPRINTF_INITIAL_DELAY,
98 downdelayinitial, CTLFLAG_RW, &nfs_tprintf_initial_delay, 0, "");
99 /* how long between console messages "nfs server foo not responding" */
100 static int nfs_tprintf_delay = NFS_TPRINTF_DELAY;
101 SYSCTL_INT(_vfs_nfs, NFS_TPRINTF_DELAY,
102 downdelayinterval, CTLFLAG_RW, &nfs_tprintf_delay, 0, "");
104 static int nfs_mountroot(struct mount *);
105 static void nfs_sec_name(char *, int *);
106 static void nfs_decode_args(struct mount *mp, struct nfsmount *nmp,
107 struct nfs_args *argp, const char *, struct ucred *,
109 static int mountnfs(struct nfs_args *, struct mount *,
110 struct sockaddr *, char *, u_char *, int, u_char *, int,
111 u_char *, int, struct vnode **, struct ucred *,
112 struct thread *, int, int, int);
113 static void nfs_getnlminfo(struct vnode *, uint8_t *, size_t *,
114 struct sockaddr_storage *, int *, off_t *,
116 static vfs_mount_t nfs_mount;
117 static vfs_cmount_t nfs_cmount;
118 static vfs_unmount_t nfs_unmount;
119 static vfs_root_t nfs_root;
120 static vfs_statfs_t nfs_statfs;
121 static vfs_sync_t nfs_sync;
122 static vfs_sysctl_t nfs_sysctl;
123 static vfs_purge_t nfs_purge;
126 * nfs vfs operations.
128 static struct vfsops nfs_vfsops = {
129 .vfs_init = ncl_init,
130 .vfs_mount = nfs_mount,
131 .vfs_cmount = nfs_cmount,
132 .vfs_root = nfs_root,
133 .vfs_statfs = nfs_statfs,
134 .vfs_sync = nfs_sync,
135 .vfs_uninit = ncl_uninit,
136 .vfs_unmount = nfs_unmount,
137 .vfs_sysctl = nfs_sysctl,
138 .vfs_purge = nfs_purge,
140 VFS_SET(nfs_vfsops, nfs, VFCF_NETWORK | VFCF_SBDRY);
142 /* So that loader and kldload(2) can find us, wherever we are.. */
143 MODULE_VERSION(nfs, 1);
144 MODULE_DEPEND(nfs, nfscommon, 1, 1, 1);
145 MODULE_DEPEND(nfs, krpc, 1, 1, 1);
146 MODULE_DEPEND(nfs, nfssvc, 1, 1, 1);
147 MODULE_DEPEND(nfs, nfslock, 1, 1, 1);
150 * This structure is now defined in sys/nfs/nfs_diskless.c so that it
151 * can be shared by both NFS clients. It is declared here so that it
152 * will be defined for kernels built without NFS_ROOT, although it
153 * isn't used in that case.
155 #if !defined(NFS_ROOT) && !defined(NFSCLIENT)
156 struct nfs_diskless nfs_diskless = { { { 0 } } };
157 struct nfsv3_diskless nfsv3_diskless = { { { 0 } } };
158 int nfs_diskless_valid = 0;
161 SYSCTL_INT(_vfs_nfs, OID_AUTO, diskless_valid, CTLFLAG_RD,
162 &nfs_diskless_valid, 0,
163 "Has the diskless struct been filled correctly");
165 SYSCTL_STRING(_vfs_nfs, OID_AUTO, diskless_rootpath, CTLFLAG_RD,
166 nfsv3_diskless.root_hostnam, 0, "Path to nfs root");
168 SYSCTL_OPAQUE(_vfs_nfs, OID_AUTO, diskless_rootaddr, CTLFLAG_RD,
169 &nfsv3_diskless.root_saddr, sizeof(nfsv3_diskless.root_saddr),
170 "%Ssockaddr_in", "Diskless root nfs address");
173 void newnfsargs_ntoh(struct nfs_args *);
174 static int nfs_mountdiskless(char *,
175 struct sockaddr_in *, struct nfs_args *,
176 struct thread *, struct vnode **, struct mount *);
177 static void nfs_convert_diskless(void);
178 static void nfs_convert_oargs(struct nfs_args *args,
179 struct onfs_args *oargs);
182 newnfs_iosize(struct nfsmount *nmp)
186 /* First, set the upper limit for iosize */
187 if (nmp->nm_flag & NFSMNT_NFSV4) {
188 maxio = NFS_MAXBSIZE;
189 } else if (nmp->nm_flag & NFSMNT_NFSV3) {
190 if (nmp->nm_sotype == SOCK_DGRAM)
191 maxio = NFS_MAXDGRAMDATA;
193 maxio = NFS_MAXBSIZE;
195 maxio = NFS_V2MAXDATA;
197 if (nmp->nm_rsize > maxio || nmp->nm_rsize == 0)
198 nmp->nm_rsize = maxio;
199 if (nmp->nm_rsize > NFS_MAXBSIZE)
200 nmp->nm_rsize = NFS_MAXBSIZE;
201 if (nmp->nm_readdirsize > maxio || nmp->nm_readdirsize == 0)
202 nmp->nm_readdirsize = maxio;
203 if (nmp->nm_readdirsize > nmp->nm_rsize)
204 nmp->nm_readdirsize = nmp->nm_rsize;
205 if (nmp->nm_wsize > maxio || nmp->nm_wsize == 0)
206 nmp->nm_wsize = maxio;
207 if (nmp->nm_wsize > NFS_MAXBSIZE)
208 nmp->nm_wsize = NFS_MAXBSIZE;
211 * Calculate the size used for io buffers. Use the larger
212 * of the two sizes to minimise nfs requests but make sure
213 * that it is at least one VM page to avoid wasting buffer
214 * space. It must also be at least NFS_DIRBLKSIZ, since
215 * that is the buffer size used for directories.
217 iosize = imax(nmp->nm_rsize, nmp->nm_wsize);
218 iosize = imax(iosize, PAGE_SIZE);
219 iosize = imax(iosize, NFS_DIRBLKSIZ);
220 nmp->nm_mountp->mnt_stat.f_iosize = iosize;
225 nfs_convert_oargs(struct nfs_args *args, struct onfs_args *oargs)
228 args->version = NFS_ARGSVERSION;
229 args->addr = oargs->addr;
230 args->addrlen = oargs->addrlen;
231 args->sotype = oargs->sotype;
232 args->proto = oargs->proto;
233 args->fh = oargs->fh;
234 args->fhsize = oargs->fhsize;
235 args->flags = oargs->flags;
236 args->wsize = oargs->wsize;
237 args->rsize = oargs->rsize;
238 args->readdirsize = oargs->readdirsize;
239 args->timeo = oargs->timeo;
240 args->retrans = oargs->retrans;
241 args->readahead = oargs->readahead;
242 args->hostname = oargs->hostname;
246 nfs_convert_diskless(void)
249 bcopy(&nfs_diskless.myif, &nfsv3_diskless.myif,
250 sizeof(struct ifaliasreq));
251 bcopy(&nfs_diskless.mygateway, &nfsv3_diskless.mygateway,
252 sizeof(struct sockaddr_in));
253 nfs_convert_oargs(&nfsv3_diskless.root_args,&nfs_diskless.root_args);
254 if (nfsv3_diskless.root_args.flags & NFSMNT_NFSV3) {
255 nfsv3_diskless.root_fhsize = NFSX_MYFH;
256 bcopy(nfs_diskless.root_fh, nfsv3_diskless.root_fh, NFSX_MYFH);
258 nfsv3_diskless.root_fhsize = NFSX_V2FH;
259 bcopy(nfs_diskless.root_fh, nfsv3_diskless.root_fh, NFSX_V2FH);
261 bcopy(&nfs_diskless.root_saddr,&nfsv3_diskless.root_saddr,
262 sizeof(struct sockaddr_in));
263 bcopy(nfs_diskless.root_hostnam, nfsv3_diskless.root_hostnam, MNAMELEN);
264 nfsv3_diskless.root_time = nfs_diskless.root_time;
265 bcopy(nfs_diskless.my_hostnam, nfsv3_diskless.my_hostnam,
267 nfs_diskless_valid = 3;
274 nfs_statfs(struct mount *mp, struct statfs *sbp)
278 struct nfsmount *nmp = VFSTONFS(mp);
279 struct nfsvattr nfsva;
282 int error = 0, attrflag, gotfsinfo = 0, ret;
287 error = vfs_busy(mp, MBF_NOWAIT);
290 error = ncl_nget(mp, nmp->nm_fh, nmp->nm_fhsize, &np, LK_EXCLUSIVE);
296 mtx_lock(&nmp->nm_mtx);
297 if (NFSHASNFSV3(nmp) && !NFSHASGOTFSINFO(nmp)) {
298 mtx_unlock(&nmp->nm_mtx);
299 error = nfsrpc_fsinfo(vp, &fs, td->td_ucred, td, &nfsva,
304 mtx_unlock(&nmp->nm_mtx);
306 error = nfsrpc_statfs(vp, &sb, &fs, td->td_ucred, td, &nfsva,
309 NFSCL_DEBUG(2, "statfs=%d\n", error);
311 ret = nfsrpc_getattrnovp(nmp, nmp->nm_fh, nmp->nm_fhsize, 1,
312 td->td_ucred, td, &nfsva, NULL, NULL);
315 * Just set default values to get things going.
317 NFSBZERO((caddr_t)&nfsva, sizeof (struct nfsvattr));
318 nfsva.na_vattr.va_type = VDIR;
319 nfsva.na_vattr.va_mode = 0777;
320 nfsva.na_vattr.va_nlink = 100;
321 nfsva.na_vattr.va_uid = (uid_t)0;
322 nfsva.na_vattr.va_gid = (gid_t)0;
323 nfsva.na_vattr.va_fileid = 2;
324 nfsva.na_vattr.va_gen = 1;
325 nfsva.na_vattr.va_blocksize = NFS_FABLKSIZE;
326 nfsva.na_vattr.va_size = 512 * 1024;
329 (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
331 mtx_lock(&nmp->nm_mtx);
332 if (gotfsinfo || (nmp->nm_flag & NFSMNT_NFSV4))
333 nfscl_loadfsinfo(nmp, &fs);
334 nfscl_loadsbinfo(nmp, &sb, sbp);
335 sbp->f_iosize = newnfs_iosize(nmp);
336 mtx_unlock(&nmp->nm_mtx);
337 if (sbp != &mp->mnt_stat) {
338 bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
339 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
341 strncpy(&sbp->f_fstypename[0], mp->mnt_vfc->vfc_name, MFSNAMELEN);
342 } else if (NFS_ISV4(vp)) {
343 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
351 * nfs version 3 fsinfo rpc call
354 ncl_fsinfo(struct nfsmount *nmp, struct vnode *vp, struct ucred *cred,
358 struct nfsvattr nfsva;
361 error = nfsrpc_fsinfo(vp, &fs, cred, td, &nfsva, &attrflag, NULL);
364 (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0,
366 mtx_lock(&nmp->nm_mtx);
367 nfscl_loadfsinfo(nmp, &fs);
368 mtx_unlock(&nmp->nm_mtx);
374 * Mount a remote root fs via. nfs. This depends on the info in the
375 * nfs_diskless structure that has been filled in properly by some primary
377 * It goes something like this:
378 * - do enough of "ifconfig" by calling ifioctl() so that the system
379 * can talk to the server
380 * - If nfs_diskless.mygateway is filled in, use that address as
382 * - build the rootfs mount point and call mountnfs() to do the rest.
384 * It is assumed to be safe to read, modify, and write the nfsv3_diskless
385 * structure, as well as other global NFS client variables here, as
386 * nfs_mountroot() will be called once in the boot before any other NFS
387 * client activity occurs.
390 nfs_mountroot(struct mount *mp)
392 struct thread *td = curthread;
393 struct nfsv3_diskless *nd = &nfsv3_diskless;
402 #if defined(BOOTP_NFSROOT) && defined(BOOTP)
403 bootpc_init(); /* use bootp to get nfs_diskless filled in */
404 #elif defined(NFS_ROOT)
405 nfs_setup_diskless();
408 if (nfs_diskless_valid == 0)
410 if (nfs_diskless_valid == 1)
411 nfs_convert_diskless();
414 * XXX splnet, so networks will receive...
419 * Do enough of ifconfig(8) so that the critical net interface can
420 * talk to the server.
422 error = socreate(nd->myif.ifra_addr.sa_family, &so, nd->root_args.sotype, 0,
425 panic("nfs_mountroot: socreate(%04x): %d",
426 nd->myif.ifra_addr.sa_family, error);
428 #if 0 /* XXX Bad idea */
430 * We might not have been told the right interface, so we pass
431 * over the first ten interfaces of the same kind, until we get
432 * one of them configured.
435 for (i = strlen(nd->myif.ifra_name) - 1;
436 nd->myif.ifra_name[i] >= '0' &&
437 nd->myif.ifra_name[i] <= '9';
438 nd->myif.ifra_name[i] ++) {
439 error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, td);
444 error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, td);
446 panic("nfs_mountroot: SIOCAIFADDR: %d", error);
447 if ((cp = getenv("boot.netif.mtu")) != NULL) {
448 ir.ifr_mtu = strtol(cp, NULL, 10);
449 bcopy(nd->myif.ifra_name, ir.ifr_name, IFNAMSIZ);
451 error = ifioctl(so, SIOCSIFMTU, (caddr_t)&ir, td);
453 printf("nfs_mountroot: SIOCSIFMTU: %d", error);
458 * If the gateway field is filled in, set it as the default route.
459 * Note that pxeboot will set a default route of 0 if the route
460 * is not set by the DHCP server. Check also for a value of 0
461 * to avoid panicking inappropriately in that situation.
463 if (nd->mygateway.sin_len != 0 &&
464 nd->mygateway.sin_addr.s_addr != 0) {
465 struct sockaddr_in mask, sin;
467 bzero((caddr_t)&mask, sizeof(mask));
469 sin.sin_family = AF_INET;
470 sin.sin_len = sizeof(sin);
471 /* XXX MRT use table 0 for this sort of thing */
472 CURVNET_SET(TD_TO_VNET(td));
473 error = rtrequest_fib(RTM_ADD, (struct sockaddr *)&sin,
474 (struct sockaddr *)&nd->mygateway,
475 (struct sockaddr *)&mask,
476 RTF_UP | RTF_GATEWAY, NULL, RT_DEFAULT_FIB);
479 panic("nfs_mountroot: RTM_ADD: %d", error);
483 * Create the rootfs mount point.
485 nd->root_args.fh = nd->root_fh;
486 nd->root_args.fhsize = nd->root_fhsize;
487 l = ntohl(nd->root_saddr.sin_addr.s_addr);
488 snprintf(buf, sizeof(buf), "%ld.%ld.%ld.%ld:%s",
489 (l >> 24) & 0xff, (l >> 16) & 0xff,
490 (l >> 8) & 0xff, (l >> 0) & 0xff, nd->root_hostnam);
491 printf("NFS ROOT: %s\n", buf);
492 nd->root_args.hostname = buf;
493 if ((error = nfs_mountdiskless(buf,
494 &nd->root_saddr, &nd->root_args, td, &vp, mp)) != 0) {
499 * This is not really an nfs issue, but it is much easier to
500 * set hostname here and then let the "/etc/rc.xxx" files
501 * mount the right /var based upon its preset value.
503 mtx_lock(&prison0.pr_mtx);
504 strlcpy(prison0.pr_hostname, nd->my_hostnam,
505 sizeof(prison0.pr_hostname));
506 mtx_unlock(&prison0.pr_mtx);
507 inittodr(ntohl(nd->root_time));
512 * Internal version of mount system call for diskless setup.
515 nfs_mountdiskless(char *path,
516 struct sockaddr_in *sin, struct nfs_args *args, struct thread *td,
517 struct vnode **vpp, struct mount *mp)
519 struct sockaddr *nam;
524 * Find the directory path in "path", which also has the server's
525 * name/ip address in it.
527 dirpath = strchr(path, ':');
529 dirlen = strlen(++dirpath);
532 nam = sodupsockaddr((struct sockaddr *)sin, M_WAITOK);
533 if ((error = mountnfs(args, mp, nam, path, NULL, 0, dirpath, dirlen,
534 NULL, 0, vpp, td->td_ucred, td, NFS_DEFAULT_NAMETIMEO,
535 NFS_DEFAULT_NEGNAMETIMEO, 0)) != 0) {
536 printf("nfs_mountroot: mount %s on /: %d\n", path, error);
543 nfs_sec_name(char *sec, int *flagsp)
545 if (!strcmp(sec, "krb5"))
546 *flagsp |= NFSMNT_KERB;
547 else if (!strcmp(sec, "krb5i"))
548 *flagsp |= (NFSMNT_KERB | NFSMNT_INTEGRITY);
549 else if (!strcmp(sec, "krb5p"))
550 *flagsp |= (NFSMNT_KERB | NFSMNT_PRIVACY);
554 nfs_decode_args(struct mount *mp, struct nfsmount *nmp, struct nfs_args *argp,
555 const char *hostname, struct ucred *cred, struct thread *td)
564 * Set read-only flag if requested; otherwise, clear it if this is
565 * an update. If this is not an update, then either the read-only
566 * flag is already clear, or this is a root mount and it was set
567 * intentionally at some previous point.
569 if (vfs_getopt(mp->mnt_optnew, "ro", NULL, NULL) == 0) {
571 mp->mnt_flag |= MNT_RDONLY;
573 } else if (mp->mnt_flag & MNT_UPDATE) {
575 mp->mnt_flag &= ~MNT_RDONLY;
580 * Silently clear NFSMNT_NOCONN if it's a TCP mount, it makes
581 * no sense in that context. Also, set up appropriate retransmit
582 * and soft timeout behavior.
584 if (argp->sotype == SOCK_STREAM) {
585 nmp->nm_flag &= ~NFSMNT_NOCONN;
586 nmp->nm_timeo = NFS_MAXTIMEO;
587 if ((argp->flags & NFSMNT_NFSV4) != 0)
588 nmp->nm_retry = INT_MAX;
590 nmp->nm_retry = NFS_RETRANS_TCP;
593 /* Also clear RDIRPLUS if NFSv2, it crashes some servers */
594 if ((argp->flags & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) == 0) {
595 argp->flags &= ~NFSMNT_RDIRPLUS;
596 nmp->nm_flag &= ~NFSMNT_RDIRPLUS;
599 /* Clear ONEOPENOWN for NFSv2, 3 and 4.0. */
600 if (nmp->nm_minorvers == 0) {
601 argp->flags &= ~NFSMNT_ONEOPENOWN;
602 nmp->nm_flag &= ~NFSMNT_ONEOPENOWN;
605 /* Re-bind if rsrvd port requested and wasn't on one */
606 adjsock = !(nmp->nm_flag & NFSMNT_RESVPORT)
607 && (argp->flags & NFSMNT_RESVPORT);
608 /* Also re-bind if we're switching to/from a connected UDP socket */
609 adjsock |= ((nmp->nm_flag & NFSMNT_NOCONN) !=
610 (argp->flags & NFSMNT_NOCONN));
612 /* Update flags atomically. Don't change the lock bits. */
613 nmp->nm_flag = argp->flags | nmp->nm_flag;
616 if ((argp->flags & NFSMNT_TIMEO) && argp->timeo > 0) {
617 nmp->nm_timeo = (argp->timeo * NFS_HZ + 5) / 10;
618 if (nmp->nm_timeo < NFS_MINTIMEO)
619 nmp->nm_timeo = NFS_MINTIMEO;
620 else if (nmp->nm_timeo > NFS_MAXTIMEO)
621 nmp->nm_timeo = NFS_MAXTIMEO;
624 if ((argp->flags & NFSMNT_RETRANS) && argp->retrans > 1) {
625 nmp->nm_retry = argp->retrans;
626 if (nmp->nm_retry > NFS_MAXREXMIT)
627 nmp->nm_retry = NFS_MAXREXMIT;
630 if ((argp->flags & NFSMNT_WSIZE) && argp->wsize > 0) {
631 nmp->nm_wsize = argp->wsize;
633 * Clip at the power of 2 below the size. There is an
634 * issue (not isolated) that causes intermittent page
635 * faults if this is not done.
637 if (nmp->nm_wsize > NFS_FABLKSIZE)
638 nmp->nm_wsize = 1 << (fls(nmp->nm_wsize) - 1);
640 nmp->nm_wsize = NFS_FABLKSIZE;
643 if ((argp->flags & NFSMNT_RSIZE) && argp->rsize > 0) {
644 nmp->nm_rsize = argp->rsize;
646 * Clip at the power of 2 below the size. There is an
647 * issue (not isolated) that causes intermittent page
648 * faults if this is not done.
650 if (nmp->nm_rsize > NFS_FABLKSIZE)
651 nmp->nm_rsize = 1 << (fls(nmp->nm_rsize) - 1);
653 nmp->nm_rsize = NFS_FABLKSIZE;
656 if ((argp->flags & NFSMNT_READDIRSIZE) && argp->readdirsize > 0) {
657 nmp->nm_readdirsize = argp->readdirsize;
660 if ((argp->flags & NFSMNT_ACREGMIN) && argp->acregmin >= 0)
661 nmp->nm_acregmin = argp->acregmin;
663 nmp->nm_acregmin = NFS_MINATTRTIMO;
664 if ((argp->flags & NFSMNT_ACREGMAX) && argp->acregmax >= 0)
665 nmp->nm_acregmax = argp->acregmax;
667 nmp->nm_acregmax = NFS_MAXATTRTIMO;
668 if ((argp->flags & NFSMNT_ACDIRMIN) && argp->acdirmin >= 0)
669 nmp->nm_acdirmin = argp->acdirmin;
671 nmp->nm_acdirmin = NFS_MINDIRATTRTIMO;
672 if ((argp->flags & NFSMNT_ACDIRMAX) && argp->acdirmax >= 0)
673 nmp->nm_acdirmax = argp->acdirmax;
675 nmp->nm_acdirmax = NFS_MAXDIRATTRTIMO;
676 if (nmp->nm_acdirmin > nmp->nm_acdirmax)
677 nmp->nm_acdirmin = nmp->nm_acdirmax;
678 if (nmp->nm_acregmin > nmp->nm_acregmax)
679 nmp->nm_acregmin = nmp->nm_acregmax;
681 if ((argp->flags & NFSMNT_READAHEAD) && argp->readahead >= 0) {
682 if (argp->readahead <= NFS_MAXRAHEAD)
683 nmp->nm_readahead = argp->readahead;
685 nmp->nm_readahead = NFS_MAXRAHEAD;
687 if ((argp->flags & NFSMNT_WCOMMITSIZE) && argp->wcommitsize >= 0) {
688 if (argp->wcommitsize < nmp->nm_wsize)
689 nmp->nm_wcommitsize = nmp->nm_wsize;
691 nmp->nm_wcommitsize = argp->wcommitsize;
694 adjsock |= ((nmp->nm_sotype != argp->sotype) ||
695 (nmp->nm_soproto != argp->proto));
697 if (nmp->nm_client != NULL && adjsock) {
698 int haslock = 0, error = 0;
700 if (nmp->nm_sotype == SOCK_STREAM) {
701 error = newnfs_sndlock(&nmp->nm_sockreq.nr_lock);
706 newnfs_disconnect(&nmp->nm_sockreq);
708 newnfs_sndunlock(&nmp->nm_sockreq.nr_lock);
709 nmp->nm_sotype = argp->sotype;
710 nmp->nm_soproto = argp->proto;
711 if (nmp->nm_sotype == SOCK_DGRAM)
712 while (newnfs_connect(nmp, &nmp->nm_sockreq,
714 printf("newnfs_args: retrying connect\n");
715 (void) nfs_catnap(PSOCK, 0, "newnfscon");
719 nmp->nm_sotype = argp->sotype;
720 nmp->nm_soproto = argp->proto;
723 if (hostname != NULL) {
724 strlcpy(nmp->nm_hostname, hostname,
725 sizeof(nmp->nm_hostname));
726 p = strchr(nmp->nm_hostname, ':');
732 static const char *nfs_opts[] = { "from", "nfs_args",
733 "noac", "noatime", "noexec", "suiddir", "nosuid", "nosymfollow", "union",
734 "noclusterr", "noclusterw", "multilabel", "acls", "force", "update",
735 "async", "noconn", "nolockd", "conn", "lockd", "intr", "rdirplus",
736 "readdirsize", "soft", "hard", "mntudp", "tcp", "udp", "wsize", "rsize",
737 "retrans", "actimeo", "acregmin", "acregmax", "acdirmin", "acdirmax",
738 "resvport", "readahead", "hostname", "timeo", "timeout", "addr", "fh",
739 "nfsv3", "sec", "principal", "nfsv4", "gssname", "allgssname", "dirpath",
740 "minorversion", "nametimeo", "negnametimeo", "nocto", "noncontigwr",
741 "pnfs", "wcommitsize", "oneopenown",
748 * It seems a bit dumb to copyinstr() the host and path here and then
749 * bcopy() them in mountnfs(), but I wanted to detect errors before
750 * doing the sockargs() call because sockargs() allocates an mbuf and
751 * an error after that means that I have to release the mbuf.
755 nfs_mount(struct mount *mp)
757 struct nfs_args args = {
758 .version = NFS_ARGSVERSION,
760 .addrlen = sizeof (struct sockaddr_in),
761 .sotype = SOCK_STREAM,
765 .flags = NFSMNT_RESVPORT,
768 .readdirsize = NFS_READDIRSIZE,
770 .retrans = NFS_RETRANS,
771 .readahead = NFS_DEFRAHEAD,
772 .wcommitsize = 0, /* was: NQ_DEFLEASE */
774 .acregmin = NFS_MINATTRTIMO,
775 .acregmax = NFS_MAXATTRTIMO,
776 .acdirmin = NFS_MINDIRATTRTIMO,
777 .acdirmax = NFS_MAXDIRATTRTIMO,
779 int error = 0, ret, len;
780 struct sockaddr *nam = NULL;
784 u_char nfh[NFSX_FHMAX], krbname[100], dirpath[100], srvkrbname[100];
785 char *cp, *opt, *name, *secname;
786 int nametimeo = NFS_DEFAULT_NAMETIMEO;
787 int negnametimeo = NFS_DEFAULT_NEGNAMETIMEO;
789 int dirlen, has_nfs_args_opt, krbnamelen, srvkrbnamelen;
792 has_nfs_args_opt = 0;
793 if (vfs_filteropt(mp->mnt_optnew, nfs_opts)) {
799 if ((mp->mnt_flag & (MNT_ROOTFS | MNT_UPDATE)) == MNT_ROOTFS) {
800 error = nfs_mountroot(mp);
807 * The old mount_nfs program passed the struct nfs_args
808 * from userspace to kernel. The new mount_nfs program
809 * passes string options via nmount() from userspace to kernel
810 * and we populate the struct nfs_args in the kernel.
812 if (vfs_getopt(mp->mnt_optnew, "nfs_args", NULL, NULL) == 0) {
813 error = vfs_copyopt(mp->mnt_optnew, "nfs_args", &args,
818 if (args.version != NFS_ARGSVERSION) {
819 error = EPROGMISMATCH;
822 has_nfs_args_opt = 1;
825 /* Handle the new style options. */
826 if (vfs_getopt(mp->mnt_optnew, "noac", NULL, NULL) == 0) {
827 args.acdirmin = args.acdirmax =
828 args.acregmin = args.acregmax = 0;
829 args.flags |= NFSMNT_ACDIRMIN | NFSMNT_ACDIRMAX |
830 NFSMNT_ACREGMIN | NFSMNT_ACREGMAX;
832 if (vfs_getopt(mp->mnt_optnew, "noconn", NULL, NULL) == 0)
833 args.flags |= NFSMNT_NOCONN;
834 if (vfs_getopt(mp->mnt_optnew, "conn", NULL, NULL) == 0)
835 args.flags &= ~NFSMNT_NOCONN;
836 if (vfs_getopt(mp->mnt_optnew, "nolockd", NULL, NULL) == 0)
837 args.flags |= NFSMNT_NOLOCKD;
838 if (vfs_getopt(mp->mnt_optnew, "lockd", NULL, NULL) == 0)
839 args.flags &= ~NFSMNT_NOLOCKD;
840 if (vfs_getopt(mp->mnt_optnew, "intr", NULL, NULL) == 0)
841 args.flags |= NFSMNT_INT;
842 if (vfs_getopt(mp->mnt_optnew, "rdirplus", NULL, NULL) == 0)
843 args.flags |= NFSMNT_RDIRPLUS;
844 if (vfs_getopt(mp->mnt_optnew, "resvport", NULL, NULL) == 0)
845 args.flags |= NFSMNT_RESVPORT;
846 if (vfs_getopt(mp->mnt_optnew, "noresvport", NULL, NULL) == 0)
847 args.flags &= ~NFSMNT_RESVPORT;
848 if (vfs_getopt(mp->mnt_optnew, "soft", NULL, NULL) == 0)
849 args.flags |= NFSMNT_SOFT;
850 if (vfs_getopt(mp->mnt_optnew, "hard", NULL, NULL) == 0)
851 args.flags &= ~NFSMNT_SOFT;
852 if (vfs_getopt(mp->mnt_optnew, "mntudp", NULL, NULL) == 0)
853 args.sotype = SOCK_DGRAM;
854 if (vfs_getopt(mp->mnt_optnew, "udp", NULL, NULL) == 0)
855 args.sotype = SOCK_DGRAM;
856 if (vfs_getopt(mp->mnt_optnew, "tcp", NULL, NULL) == 0)
857 args.sotype = SOCK_STREAM;
858 if (vfs_getopt(mp->mnt_optnew, "nfsv3", NULL, NULL) == 0)
859 args.flags |= NFSMNT_NFSV3;
860 if (vfs_getopt(mp->mnt_optnew, "nfsv4", NULL, NULL) == 0) {
861 args.flags |= NFSMNT_NFSV4;
862 args.sotype = SOCK_STREAM;
864 if (vfs_getopt(mp->mnt_optnew, "allgssname", NULL, NULL) == 0)
865 args.flags |= NFSMNT_ALLGSSNAME;
866 if (vfs_getopt(mp->mnt_optnew, "nocto", NULL, NULL) == 0)
867 args.flags |= NFSMNT_NOCTO;
868 if (vfs_getopt(mp->mnt_optnew, "noncontigwr", NULL, NULL) == 0)
869 args.flags |= NFSMNT_NONCONTIGWR;
870 if (vfs_getopt(mp->mnt_optnew, "pnfs", NULL, NULL) == 0)
871 args.flags |= NFSMNT_PNFS;
872 if (vfs_getopt(mp->mnt_optnew, "oneopenown", NULL, NULL) == 0)
873 args.flags |= NFSMNT_ONEOPENOWN;
874 if (vfs_getopt(mp->mnt_optnew, "readdirsize", (void **)&opt, NULL) == 0) {
876 vfs_mount_error(mp, "illegal readdirsize");
880 ret = sscanf(opt, "%d", &args.readdirsize);
881 if (ret != 1 || args.readdirsize <= 0) {
882 vfs_mount_error(mp, "illegal readdirsize: %s",
887 args.flags |= NFSMNT_READDIRSIZE;
889 if (vfs_getopt(mp->mnt_optnew, "readahead", (void **)&opt, NULL) == 0) {
891 vfs_mount_error(mp, "illegal readahead");
895 ret = sscanf(opt, "%d", &args.readahead);
896 if (ret != 1 || args.readahead <= 0) {
897 vfs_mount_error(mp, "illegal readahead: %s",
902 args.flags |= NFSMNT_READAHEAD;
904 if (vfs_getopt(mp->mnt_optnew, "wsize", (void **)&opt, NULL) == 0) {
906 vfs_mount_error(mp, "illegal wsize");
910 ret = sscanf(opt, "%d", &args.wsize);
911 if (ret != 1 || args.wsize <= 0) {
912 vfs_mount_error(mp, "illegal wsize: %s",
917 args.flags |= NFSMNT_WSIZE;
919 if (vfs_getopt(mp->mnt_optnew, "rsize", (void **)&opt, NULL) == 0) {
921 vfs_mount_error(mp, "illegal rsize");
925 ret = sscanf(opt, "%d", &args.rsize);
926 if (ret != 1 || args.rsize <= 0) {
927 vfs_mount_error(mp, "illegal wsize: %s",
932 args.flags |= NFSMNT_RSIZE;
934 if (vfs_getopt(mp->mnt_optnew, "retrans", (void **)&opt, NULL) == 0) {
936 vfs_mount_error(mp, "illegal retrans");
940 ret = sscanf(opt, "%d", &args.retrans);
941 if (ret != 1 || args.retrans <= 0) {
942 vfs_mount_error(mp, "illegal retrans: %s",
947 args.flags |= NFSMNT_RETRANS;
949 if (vfs_getopt(mp->mnt_optnew, "actimeo", (void **)&opt, NULL) == 0) {
950 ret = sscanf(opt, "%d", &args.acregmin);
951 if (ret != 1 || args.acregmin < 0) {
952 vfs_mount_error(mp, "illegal actimeo: %s",
957 args.acdirmin = args.acdirmax = args.acregmax = args.acregmin;
958 args.flags |= NFSMNT_ACDIRMIN | NFSMNT_ACDIRMAX |
959 NFSMNT_ACREGMIN | NFSMNT_ACREGMAX;
961 if (vfs_getopt(mp->mnt_optnew, "acregmin", (void **)&opt, NULL) == 0) {
962 ret = sscanf(opt, "%d", &args.acregmin);
963 if (ret != 1 || args.acregmin < 0) {
964 vfs_mount_error(mp, "illegal acregmin: %s",
969 args.flags |= NFSMNT_ACREGMIN;
971 if (vfs_getopt(mp->mnt_optnew, "acregmax", (void **)&opt, NULL) == 0) {
972 ret = sscanf(opt, "%d", &args.acregmax);
973 if (ret != 1 || args.acregmax < 0) {
974 vfs_mount_error(mp, "illegal acregmax: %s",
979 args.flags |= NFSMNT_ACREGMAX;
981 if (vfs_getopt(mp->mnt_optnew, "acdirmin", (void **)&opt, NULL) == 0) {
982 ret = sscanf(opt, "%d", &args.acdirmin);
983 if (ret != 1 || args.acdirmin < 0) {
984 vfs_mount_error(mp, "illegal acdirmin: %s",
989 args.flags |= NFSMNT_ACDIRMIN;
991 if (vfs_getopt(mp->mnt_optnew, "acdirmax", (void **)&opt, NULL) == 0) {
992 ret = sscanf(opt, "%d", &args.acdirmax);
993 if (ret != 1 || args.acdirmax < 0) {
994 vfs_mount_error(mp, "illegal acdirmax: %s",
999 args.flags |= NFSMNT_ACDIRMAX;
1001 if (vfs_getopt(mp->mnt_optnew, "wcommitsize", (void **)&opt, NULL) == 0) {
1002 ret = sscanf(opt, "%d", &args.wcommitsize);
1003 if (ret != 1 || args.wcommitsize < 0) {
1004 vfs_mount_error(mp, "illegal wcommitsize: %s", opt);
1008 args.flags |= NFSMNT_WCOMMITSIZE;
1010 if (vfs_getopt(mp->mnt_optnew, "timeo", (void **)&opt, NULL) == 0) {
1011 ret = sscanf(opt, "%d", &args.timeo);
1012 if (ret != 1 || args.timeo <= 0) {
1013 vfs_mount_error(mp, "illegal timeo: %s",
1018 args.flags |= NFSMNT_TIMEO;
1020 if (vfs_getopt(mp->mnt_optnew, "timeout", (void **)&opt, NULL) == 0) {
1021 ret = sscanf(opt, "%d", &args.timeo);
1022 if (ret != 1 || args.timeo <= 0) {
1023 vfs_mount_error(mp, "illegal timeout: %s",
1028 args.flags |= NFSMNT_TIMEO;
1030 if (vfs_getopt(mp->mnt_optnew, "nametimeo", (void **)&opt, NULL) == 0) {
1031 ret = sscanf(opt, "%d", &nametimeo);
1032 if (ret != 1 || nametimeo < 0) {
1033 vfs_mount_error(mp, "illegal nametimeo: %s", opt);
1038 if (vfs_getopt(mp->mnt_optnew, "negnametimeo", (void **)&opt, NULL)
1040 ret = sscanf(opt, "%d", &negnametimeo);
1041 if (ret != 1 || negnametimeo < 0) {
1042 vfs_mount_error(mp, "illegal negnametimeo: %s",
1048 if (vfs_getopt(mp->mnt_optnew, "minorversion", (void **)&opt, NULL) ==
1050 ret = sscanf(opt, "%d", &minvers);
1051 if (ret != 1 || minvers < 0 || minvers > 1 ||
1052 (args.flags & NFSMNT_NFSV4) == 0) {
1053 vfs_mount_error(mp, "illegal minorversion: %s", opt);
1058 if (vfs_getopt(mp->mnt_optnew, "sec",
1059 (void **) &secname, NULL) == 0)
1060 nfs_sec_name(secname, &args.flags);
1062 if (mp->mnt_flag & MNT_UPDATE) {
1063 struct nfsmount *nmp = VFSTONFS(mp);
1071 * If a change from TCP->UDP is done and there are thread(s)
1072 * that have I/O RPC(s) in progress with a tranfer size
1073 * greater than NFS_MAXDGRAMDATA, those thread(s) will be
1074 * hung, retrying the RPC(s) forever. Usually these threads
1075 * will be seen doing an uninterruptible sleep on wait channel
1076 * "newnfsreq" (truncated to "newnfsre" by procstat).
1078 if (args.sotype == SOCK_DGRAM && nmp->nm_sotype == SOCK_STREAM)
1079 tprintf(td->td_proc, LOG_WARNING,
1080 "Warning: mount -u that changes TCP->UDP can result in hung threads\n");
1083 * When doing an update, we can't change version,
1084 * security, switch lockd strategies, change cookie
1085 * translation or switch oneopenown.
1087 args.flags = (args.flags &
1094 NFSMNT_NOLOCKD /*|NFSMNT_XLATECOOKIE*/)) |
1102 NFSMNT_NOLOCKD /*|NFSMNT_XLATECOOKIE*/));
1103 nfs_decode_args(mp, nmp, &args, NULL, td->td_ucred, td);
1108 * Make the nfs_ip_paranoia sysctl serve as the default connection
1109 * or no-connection mode for those protocols that support
1110 * no-connection mode (the flag will be cleared later for protocols
1111 * that do not support no-connection mode). This will allow a client
1112 * to receive replies from a different IP then the request was
1113 * sent to. Note: default value for nfs_ip_paranoia is 1 (paranoid),
1116 if (nfs_ip_paranoia == 0)
1117 args.flags |= NFSMNT_NOCONN;
1119 if (has_nfs_args_opt != 0) {
1121 * In the 'nfs_args' case, the pointers in the args
1122 * structure are in userland - we copy them in here.
1124 if (args.fhsize < 0 || args.fhsize > NFSX_V3FHMAX) {
1125 vfs_mount_error(mp, "Bad file handle");
1129 error = copyin((caddr_t)args.fh, (caddr_t)nfh,
1133 error = copyinstr(args.hostname, hst, MNAMELEN - 1, &hstlen);
1136 bzero(&hst[hstlen], MNAMELEN - hstlen);
1137 args.hostname = hst;
1138 /* sockargs() call must be after above copyin() calls */
1139 error = getsockaddr(&nam, (caddr_t)args.addr,
1144 if (vfs_getopt(mp->mnt_optnew, "fh", (void **)&args.fh,
1145 &args.fhsize) == 0) {
1146 if (args.fhsize < 0 || args.fhsize > NFSX_FHMAX) {
1147 vfs_mount_error(mp, "Bad file handle");
1151 bcopy(args.fh, nfh, args.fhsize);
1155 (void) vfs_getopt(mp->mnt_optnew, "hostname",
1156 (void **)&args.hostname, &len);
1157 if (args.hostname == NULL) {
1158 vfs_mount_error(mp, "Invalid hostname");
1162 if (len >= MNAMELEN) {
1163 vfs_mount_error(mp, "Hostname too long");
1167 bcopy(args.hostname, hst, len);
1171 if (vfs_getopt(mp->mnt_optnew, "principal", (void **)&name, NULL) == 0)
1172 strlcpy(srvkrbname, name, sizeof (srvkrbname));
1174 snprintf(srvkrbname, sizeof (srvkrbname), "nfs@%s", hst);
1175 cp = strchr(srvkrbname, ':');
1179 srvkrbnamelen = strlen(srvkrbname);
1181 if (vfs_getopt(mp->mnt_optnew, "gssname", (void **)&name, NULL) == 0)
1182 strlcpy(krbname, name, sizeof (krbname));
1185 krbnamelen = strlen(krbname);
1187 if (vfs_getopt(mp->mnt_optnew, "dirpath", (void **)&name, NULL) == 0)
1188 strlcpy(dirpath, name, sizeof (dirpath));
1191 dirlen = strlen(dirpath);
1193 if (has_nfs_args_opt == 0) {
1194 if (vfs_getopt(mp->mnt_optnew, "addr",
1195 (void **)&args.addr, &args.addrlen) == 0) {
1196 if (args.addrlen > SOCK_MAXADDRLEN) {
1197 error = ENAMETOOLONG;
1200 nam = malloc(args.addrlen, M_SONAME, M_WAITOK);
1201 bcopy(args.addr, nam, args.addrlen);
1202 nam->sa_len = args.addrlen;
1204 vfs_mount_error(mp, "No server address");
1211 error = mountnfs(&args, mp, nam, hst, krbname, krbnamelen, dirpath,
1212 dirlen, srvkrbname, srvkrbnamelen, &vp, td->td_ucred, td,
1213 nametimeo, negnametimeo, minvers);
1217 mp->mnt_kern_flag |= MNTK_LOOKUP_SHARED | MNTK_NO_IOPF |
1219 if ((VFSTONFS(mp)->nm_flag & NFSMNT_NFSV4) != 0)
1220 mp->mnt_kern_flag |= MNTK_NULL_NOCACHE;
1231 * It seems a bit dumb to copyinstr() the host and path here and then
1232 * bcopy() them in mountnfs(), but I wanted to detect errors before
1233 * doing the sockargs() call because sockargs() allocates an mbuf and
1234 * an error after that means that I have to release the mbuf.
1238 nfs_cmount(struct mntarg *ma, void *data, uint64_t flags)
1241 struct nfs_args args;
1243 error = copyin(data, &args, sizeof (struct nfs_args));
1247 ma = mount_arg(ma, "nfs_args", &args, sizeof args);
1249 error = kernel_mount(ma, flags);
1254 * Common code for mount and mountroot
1257 mountnfs(struct nfs_args *argp, struct mount *mp, struct sockaddr *nam,
1258 char *hst, u_char *krbname, int krbnamelen, u_char *dirpath, int dirlen,
1259 u_char *srvkrbname, int srvkrbnamelen, struct vnode **vpp,
1260 struct ucred *cred, struct thread *td, int nametimeo, int negnametimeo,
1263 struct nfsmount *nmp;
1265 int error, trycnt, ret;
1266 struct nfsvattr nfsva;
1267 struct nfsclclient *clp;
1268 struct nfsclds *dsp, *tdsp;
1270 static u_int64_t clval = 0;
1272 NFSCL_DEBUG(3, "in mnt\n");
1274 if (mp->mnt_flag & MNT_UPDATE) {
1276 printf("%s: MNT_UPDATE is no longer handled here\n", __func__);
1277 FREE(nam, M_SONAME);
1280 MALLOC(nmp, struct nfsmount *, sizeof (struct nfsmount) +
1281 krbnamelen + dirlen + srvkrbnamelen + 2,
1282 M_NEWNFSMNT, M_WAITOK | M_ZERO);
1283 TAILQ_INIT(&nmp->nm_bufq);
1284 TAILQ_INIT(&nmp->nm_sess);
1286 clval = (u_int64_t)nfsboottime.tv_sec;
1287 nmp->nm_clval = clval++;
1288 nmp->nm_krbnamelen = krbnamelen;
1289 nmp->nm_dirpathlen = dirlen;
1290 nmp->nm_srvkrbnamelen = srvkrbnamelen;
1291 if (td->td_ucred->cr_uid != (uid_t)0) {
1293 * nm_uid is used to get KerberosV credentials for
1294 * the nfsv4 state handling operations if there is
1295 * no host based principal set. Use the uid of
1296 * this user if not root, since they are doing the
1297 * mount. I don't think setting this for root will
1298 * work, since root normally does not have user
1299 * credentials in a credentials cache.
1301 nmp->nm_uid = td->td_ucred->cr_uid;
1304 * Just set to -1, so it won't be used.
1306 nmp->nm_uid = (uid_t)-1;
1309 /* Copy and null terminate all the names */
1310 if (nmp->nm_krbnamelen > 0) {
1311 bcopy(krbname, nmp->nm_krbname, nmp->nm_krbnamelen);
1312 nmp->nm_name[nmp->nm_krbnamelen] = '\0';
1314 if (nmp->nm_dirpathlen > 0) {
1315 bcopy(dirpath, NFSMNT_DIRPATH(nmp),
1316 nmp->nm_dirpathlen);
1317 nmp->nm_name[nmp->nm_krbnamelen + nmp->nm_dirpathlen
1320 if (nmp->nm_srvkrbnamelen > 0) {
1321 bcopy(srvkrbname, NFSMNT_SRVKRBNAME(nmp),
1322 nmp->nm_srvkrbnamelen);
1323 nmp->nm_name[nmp->nm_krbnamelen + nmp->nm_dirpathlen
1324 + nmp->nm_srvkrbnamelen + 2] = '\0';
1326 nmp->nm_sockreq.nr_cred = crhold(cred);
1327 mtx_init(&nmp->nm_sockreq.nr_mtx, "nfssock", NULL, MTX_DEF);
1329 nmp->nm_getinfo = nfs_getnlminfo;
1330 nmp->nm_vinvalbuf = ncl_vinvalbuf;
1333 nmp->nm_mountp = mp;
1334 mtx_init(&nmp->nm_mtx, "NFSmount lock", NULL, MTX_DEF | MTX_DUPOK);
1337 * Since nfs_decode_args() might optionally set them, these
1338 * need to be set to defaults before the call, so that the
1339 * optional settings aren't overwritten.
1341 nmp->nm_nametimeo = nametimeo;
1342 nmp->nm_negnametimeo = negnametimeo;
1343 nmp->nm_timeo = NFS_TIMEO;
1344 nmp->nm_retry = NFS_RETRANS;
1345 nmp->nm_readahead = NFS_DEFRAHEAD;
1347 /* This is empirical approximation of sqrt(hibufspace) * 256. */
1348 nmp->nm_wcommitsize = NFS_MAXBSIZE / 256;
1349 while ((long)nmp->nm_wcommitsize * nmp->nm_wcommitsize < hibufspace)
1350 nmp->nm_wcommitsize *= 2;
1351 nmp->nm_wcommitsize *= 256;
1353 if ((argp->flags & NFSMNT_NFSV4) != 0)
1354 nmp->nm_minorvers = minvers;
1356 nmp->nm_minorvers = 0;
1358 nfs_decode_args(mp, nmp, argp, hst, cred, td);
1361 * V2 can only handle 32 bit filesizes. A 4GB-1 limit may be too
1362 * high, depending on whether we end up with negative offsets in
1363 * the client or server somewhere. 2GB-1 may be safer.
1365 * For V3, ncl_fsinfo will adjust this as necessary. Assume maximum
1366 * that we can handle until we find out otherwise.
1368 if ((argp->flags & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) == 0)
1369 nmp->nm_maxfilesize = 0xffffffffLL;
1371 nmp->nm_maxfilesize = OFF_MAX;
1373 if ((argp->flags & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) == 0) {
1374 nmp->nm_wsize = NFS_WSIZE;
1375 nmp->nm_rsize = NFS_RSIZE;
1376 nmp->nm_readdirsize = NFS_READDIRSIZE;
1378 nmp->nm_numgrps = NFS_MAXGRPS;
1379 nmp->nm_tprintf_delay = nfs_tprintf_delay;
1380 if (nmp->nm_tprintf_delay < 0)
1381 nmp->nm_tprintf_delay = 0;
1382 nmp->nm_tprintf_initial_delay = nfs_tprintf_initial_delay;
1383 if (nmp->nm_tprintf_initial_delay < 0)
1384 nmp->nm_tprintf_initial_delay = 0;
1385 nmp->nm_fhsize = argp->fhsize;
1386 if (nmp->nm_fhsize > 0)
1387 bcopy((caddr_t)argp->fh, (caddr_t)nmp->nm_fh, argp->fhsize);
1388 bcopy(hst, mp->mnt_stat.f_mntfromname, MNAMELEN);
1390 /* Set up the sockets and per-host congestion */
1391 nmp->nm_sotype = argp->sotype;
1392 nmp->nm_soproto = argp->proto;
1393 nmp->nm_sockreq.nr_prog = NFS_PROG;
1394 if ((argp->flags & NFSMNT_NFSV4))
1395 nmp->nm_sockreq.nr_vers = NFS_VER4;
1396 else if ((argp->flags & NFSMNT_NFSV3))
1397 nmp->nm_sockreq.nr_vers = NFS_VER3;
1399 nmp->nm_sockreq.nr_vers = NFS_VER2;
1402 if ((error = newnfs_connect(nmp, &nmp->nm_sockreq, cred, td, 0)))
1404 /* For NFSv4.1, get the clientid now. */
1405 if (nmp->nm_minorvers > 0) {
1406 NFSCL_DEBUG(3, "at getcl\n");
1407 error = nfscl_getcl(mp, cred, td, 0, &clp);
1408 NFSCL_DEBUG(3, "aft getcl=%d\n", error);
1413 if (nmp->nm_fhsize == 0 && (nmp->nm_flag & NFSMNT_NFSV4) &&
1414 nmp->nm_dirpathlen > 0) {
1415 NFSCL_DEBUG(3, "in dirp\n");
1417 * If the fhsize on the mount point == 0 for V4, the mount
1418 * path needs to be looked up.
1422 error = nfsrpc_getdirpath(nmp, NFSMNT_DIRPATH(nmp),
1424 NFSCL_DEBUG(3, "aft dirp=%d\n", error);
1426 (void) nfs_catnap(PZERO, error, "nfsgetdirp");
1427 } while (error && --trycnt > 0);
1429 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
1435 * A reference count is needed on the nfsnode representing the
1436 * remote root. If this object is not persistent, then backward
1437 * traversals of the mount point (i.e. "..") will not work if
1438 * the nfsnode gets flushed out of the cache. Ufs does not have
1439 * this problem, because one can identify root inodes by their
1440 * number == ROOTINO (2).
1442 if (nmp->nm_fhsize > 0) {
1444 * Set f_iosize to NFS_DIRBLKSIZ so that bo_bsize gets set
1445 * non-zero for the root vnode. f_iosize will be set correctly
1446 * by nfs_statfs() before any I/O occurs.
1448 mp->mnt_stat.f_iosize = NFS_DIRBLKSIZ;
1449 error = ncl_nget(mp, nmp->nm_fh, nmp->nm_fhsize, &np,
1456 * Get file attributes and transfer parameters for the
1457 * mountpoint. This has the side effect of filling in
1458 * (*vpp)->v_type with the correct value.
1460 ret = nfsrpc_getattrnovp(nmp, nmp->nm_fh, nmp->nm_fhsize, 1,
1461 cred, td, &nfsva, NULL, &lease);
1464 * Just set default values to get things going.
1466 NFSBZERO((caddr_t)&nfsva, sizeof (struct nfsvattr));
1467 nfsva.na_vattr.va_type = VDIR;
1468 nfsva.na_vattr.va_mode = 0777;
1469 nfsva.na_vattr.va_nlink = 100;
1470 nfsva.na_vattr.va_uid = (uid_t)0;
1471 nfsva.na_vattr.va_gid = (gid_t)0;
1472 nfsva.na_vattr.va_fileid = 2;
1473 nfsva.na_vattr.va_gen = 1;
1474 nfsva.na_vattr.va_blocksize = NFS_FABLKSIZE;
1475 nfsva.na_vattr.va_size = 512 * 1024;
1478 (void) nfscl_loadattrcache(vpp, &nfsva, NULL, NULL, 0, 1);
1479 if (nmp->nm_minorvers > 0) {
1480 NFSCL_DEBUG(3, "lease=%d\n", (int)lease);
1482 clp->nfsc_renew = NFSCL_RENEW(lease);
1483 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew;
1484 clp->nfsc_clientidrev++;
1485 if (clp->nfsc_clientidrev == 0)
1486 clp->nfsc_clientidrev++;
1489 * Mount will succeed, so the renew thread can be
1492 nfscl_start_renewthread(clp);
1493 nfscl_clientrelease(clp);
1495 if (argp->flags & NFSMNT_NFSV3)
1496 ncl_fsinfo(nmp, *vpp, cred, td);
1498 /* Mark if the mount point supports NFSv4 ACLs. */
1499 if ((argp->flags & NFSMNT_NFSV4) != 0 && nfsrv_useacl != 0 &&
1501 NFSISSET_ATTRBIT(&nfsva.na_suppattr, NFSATTRBIT_ACL)) {
1503 mp->mnt_flag |= MNT_NFS4ACLS;
1508 * Lose the lock but keep the ref.
1510 NFSVOPUNLOCK(*vpp, 0);
1517 nfscl_clientrelease(clp);
1518 newnfs_disconnect(&nmp->nm_sockreq);
1519 crfree(nmp->nm_sockreq.nr_cred);
1520 if (nmp->nm_sockreq.nr_auth != NULL)
1521 AUTH_DESTROY(nmp->nm_sockreq.nr_auth);
1522 mtx_destroy(&nmp->nm_sockreq.nr_mtx);
1523 mtx_destroy(&nmp->nm_mtx);
1524 if (nmp->nm_clp != NULL) {
1526 LIST_REMOVE(nmp->nm_clp, nfsc_list);
1528 free(nmp->nm_clp, M_NFSCLCLIENT);
1530 TAILQ_FOREACH_SAFE(dsp, &nmp->nm_sess, nfsclds_list, tdsp)
1531 nfscl_freenfsclds(dsp);
1532 FREE(nmp, M_NEWNFSMNT);
1533 FREE(nam, M_SONAME);
1538 * unmount system call
1541 nfs_unmount(struct mount *mp, int mntflags)
1544 struct nfsmount *nmp;
1545 int error, flags = 0, i, trycnt = 0;
1546 struct nfsclds *dsp, *tdsp;
1550 if (mntflags & MNT_FORCE)
1551 flags |= FORCECLOSE;
1554 * Goes something like this..
1555 * - Call vflush() to clear out vnodes for this filesystem
1556 * - Close the socket
1557 * - Free up the data structures
1559 /* In the forced case, cancel any outstanding requests. */
1560 if (mntflags & MNT_FORCE) {
1561 error = newnfs_nmcancelreqs(nmp);
1564 /* For a forced close, get rid of the renew thread now */
1565 nfscl_umount(nmp, td);
1567 /* We hold 1 extra ref on the root vnode; see comment in mountnfs(). */
1569 error = vflush(mp, 1, flags, td);
1570 if ((mntflags & MNT_FORCE) && error != 0 && ++trycnt < 30)
1571 (void) nfs_catnap(PSOCK, error, "newndm");
1572 } while ((mntflags & MNT_FORCE) && error != 0 && trycnt < 30);
1577 * We are now committed to the unmount.
1579 if ((mntflags & MNT_FORCE) == 0)
1580 nfscl_umount(nmp, td);
1581 /* Make sure no nfsiods are assigned to this mount. */
1582 mtx_lock(&ncl_iod_mutex);
1583 for (i = 0; i < NFS_MAXASYNCDAEMON; i++)
1584 if (ncl_iodmount[i] == nmp) {
1585 ncl_iodwant[i] = NFSIOD_AVAILABLE;
1586 ncl_iodmount[i] = NULL;
1588 mtx_unlock(&ncl_iod_mutex);
1589 newnfs_disconnect(&nmp->nm_sockreq);
1590 crfree(nmp->nm_sockreq.nr_cred);
1591 FREE(nmp->nm_nam, M_SONAME);
1592 if (nmp->nm_sockreq.nr_auth != NULL)
1593 AUTH_DESTROY(nmp->nm_sockreq.nr_auth);
1594 mtx_destroy(&nmp->nm_sockreq.nr_mtx);
1595 mtx_destroy(&nmp->nm_mtx);
1596 TAILQ_FOREACH_SAFE(dsp, &nmp->nm_sess, nfsclds_list, tdsp)
1597 nfscl_freenfsclds(dsp);
1598 FREE(nmp, M_NEWNFSMNT);
1604 * Return root of a filesystem
1607 nfs_root(struct mount *mp, int flags, struct vnode **vpp)
1610 struct nfsmount *nmp;
1615 error = ncl_nget(mp, nmp->nm_fh, nmp->nm_fhsize, &np, flags);
1620 * Get transfer parameters and attributes for root vnode once.
1622 mtx_lock(&nmp->nm_mtx);
1623 if (NFSHASNFSV3(nmp) && !NFSHASGOTFSINFO(nmp)) {
1624 mtx_unlock(&nmp->nm_mtx);
1625 ncl_fsinfo(nmp, vp, curthread->td_ucred, curthread);
1627 mtx_unlock(&nmp->nm_mtx);
1628 if (vp->v_type == VNON)
1630 vp->v_vflag |= VV_ROOT;
1636 * Flush out the buffer cache
1640 nfs_sync(struct mount *mp, int waitfor)
1642 struct vnode *vp, *mvp;
1644 int error, allerror = 0;
1650 * If a forced dismount is in progress, return from here so that
1651 * the umount(2) syscall doesn't get stuck in VFS_SYNC() before
1652 * calling VFS_UNMOUNT().
1654 if ((mp->mnt_kern_flag & MNTK_UNMOUNTF) != 0) {
1661 * Force stale buffer cache information to be flushed.
1664 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) {
1665 /* XXX Racy bv_cnt check. */
1666 if (NFSVOPISLOCKED(vp) || vp->v_bufobj.bo_dirty.bv_cnt == 0 ||
1667 waitfor == MNT_LAZY) {
1671 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td)) {
1672 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp);
1675 error = VOP_FSYNC(vp, waitfor, td);
1678 NFSVOPUNLOCK(vp, 0);
1685 nfs_sysctl(struct mount *mp, fsctlop_t op, struct sysctl_req *req)
1687 struct nfsmount *nmp = VFSTONFS(mp);
1691 bzero(&vq, sizeof(vq));
1694 case VFS_CTL_NOLOCKS:
1695 val = (nmp->nm_flag & NFSMNT_NOLOCKS) ? 1 : 0;
1696 if (req->oldptr != NULL) {
1697 error = SYSCTL_OUT(req, &val, sizeof(val));
1701 if (req->newptr != NULL) {
1702 error = SYSCTL_IN(req, &val, sizeof(val));
1706 nmp->nm_flag |= NFSMNT_NOLOCKS;
1708 nmp->nm_flag &= ~NFSMNT_NOLOCKS;
1713 mtx_lock(&nmp->nm_mtx);
1714 if (nmp->nm_state & NFSSTA_TIMEO)
1715 vq.vq_flags |= VQ_NOTRESP;
1716 mtx_unlock(&nmp->nm_mtx);
1718 if (!(nmp->nm_flag & NFSMNT_NOLOCKS) &&
1719 (nmp->nm_state & NFSSTA_LOCKTIMEO))
1720 vq.vq_flags |= VQ_NOTRESPLOCK;
1722 error = SYSCTL_OUT(req, &vq, sizeof(vq));
1725 if (req->oldptr != NULL) {
1726 error = SYSCTL_OUT(req, &nmp->nm_tprintf_initial_delay,
1727 sizeof(nmp->nm_tprintf_initial_delay));
1731 if (req->newptr != NULL) {
1732 error = vfs_suser(mp, req->td);
1735 error = SYSCTL_IN(req, &nmp->nm_tprintf_initial_delay,
1736 sizeof(nmp->nm_tprintf_initial_delay));
1739 if (nmp->nm_tprintf_initial_delay < 0)
1740 nmp->nm_tprintf_initial_delay = 0;
1750 * Purge any RPCs in progress, so that they will all return errors.
1751 * This allows dounmount() to continue as far as VFS_UNMOUNT() for a
1755 nfs_purge(struct mount *mp)
1757 struct nfsmount *nmp = VFSTONFS(mp);
1759 newnfs_nmcancelreqs(nmp);
1763 * Extract the information needed by the nlm from the nfs vnode.
1766 nfs_getnlminfo(struct vnode *vp, uint8_t *fhp, size_t *fhlenp,
1767 struct sockaddr_storage *sp, int *is_v3p, off_t *sizep,
1768 struct timeval *timeop)
1770 struct nfsmount *nmp;
1771 struct nfsnode *np = VTONFS(vp);
1773 nmp = VFSTONFS(vp->v_mount);
1775 *fhlenp = (size_t)np->n_fhp->nfh_len;
1777 bcopy(np->n_fhp->nfh_fh, fhp, np->n_fhp->nfh_len);
1779 bcopy(nmp->nm_nam, sp, min(nmp->nm_nam->sa_len, sizeof(*sp)));
1781 *is_v3p = NFS_ISV3(vp);
1783 *sizep = np->n_size;
1784 if (timeop != NULL) {
1785 timeop->tv_sec = nmp->nm_timeo / NFS_HZ;
1786 timeop->tv_usec = (nmp->nm_timeo % NFS_HZ) * (1000000 / NFS_HZ);
1791 * This function prints out an option name, based on the conditional
1794 static __inline void nfscl_printopt(struct nfsmount *nmp, int testval,
1795 char *opt, char **buf, size_t *blen)
1799 if (testval != 0 && *blen > strlen(opt)) {
1800 len = snprintf(*buf, *blen, "%s", opt);
1801 if (len != strlen(opt))
1809 * This function printf out an options integer value.
1811 static __inline void nfscl_printoptval(struct nfsmount *nmp, int optval,
1812 char *opt, char **buf, size_t *blen)
1816 if (*blen > strlen(opt) + 1) {
1817 /* Could result in truncated output string. */
1818 len = snprintf(*buf, *blen, "%s=%d", opt, optval);
1827 * Load the option flags and values into the buffer.
1829 void nfscl_retopts(struct nfsmount *nmp, char *buffer, size_t buflen)
1836 nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NFSV4) != 0, "nfsv4", &buf,
1838 if ((nmp->nm_flag & NFSMNT_NFSV4) != 0) {
1839 nfscl_printoptval(nmp, nmp->nm_minorvers, ",minorversion", &buf,
1841 nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_PNFS) != 0, ",pnfs",
1843 nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_ONEOPENOWN) != 0 &&
1844 nmp->nm_minorvers > 0, ",oneopenown", &buf, &blen);
1846 nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NFSV3) != 0, "nfsv3", &buf,
1848 nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) == 0,
1849 "nfsv2", &buf, &blen);
1850 nfscl_printopt(nmp, nmp->nm_sotype == SOCK_STREAM, ",tcp", &buf, &blen);
1851 nfscl_printopt(nmp, nmp->nm_sotype != SOCK_STREAM, ",udp", &buf, &blen);
1852 nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_RESVPORT) != 0, ",resvport",
1854 nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NOCONN) != 0, ",noconn",
1856 nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_SOFT) == 0, ",hard", &buf,
1858 nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_SOFT) != 0, ",soft", &buf,
1860 nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_INT) != 0, ",intr", &buf,
1862 nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NOCTO) == 0, ",cto", &buf,
1864 nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NOCTO) != 0, ",nocto", &buf,
1866 nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NONCONTIGWR) != 0,
1867 ",noncontigwr", &buf, &blen);
1868 nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_NOLOCKD | NFSMNT_NFSV4)) ==
1869 0, ",lockd", &buf, &blen);
1870 nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_NOLOCKD | NFSMNT_NFSV4)) ==
1871 NFSMNT_NOLOCKD, ",nolockd", &buf, &blen);
1872 nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_RDIRPLUS) != 0, ",rdirplus",
1874 nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_KERB) == 0, ",sec=sys",
1876 nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_KERB | NFSMNT_INTEGRITY |
1877 NFSMNT_PRIVACY)) == NFSMNT_KERB, ",sec=krb5", &buf, &blen);
1878 nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_KERB | NFSMNT_INTEGRITY |
1879 NFSMNT_PRIVACY)) == (NFSMNT_KERB | NFSMNT_INTEGRITY), ",sec=krb5i",
1881 nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_KERB | NFSMNT_INTEGRITY |
1882 NFSMNT_PRIVACY)) == (NFSMNT_KERB | NFSMNT_PRIVACY), ",sec=krb5p",
1884 nfscl_printoptval(nmp, nmp->nm_acdirmin, ",acdirmin", &buf, &blen);
1885 nfscl_printoptval(nmp, nmp->nm_acdirmax, ",acdirmax", &buf, &blen);
1886 nfscl_printoptval(nmp, nmp->nm_acregmin, ",acregmin", &buf, &blen);
1887 nfscl_printoptval(nmp, nmp->nm_acregmax, ",acregmax", &buf, &blen);
1888 nfscl_printoptval(nmp, nmp->nm_nametimeo, ",nametimeo", &buf, &blen);
1889 nfscl_printoptval(nmp, nmp->nm_negnametimeo, ",negnametimeo", &buf,
1891 nfscl_printoptval(nmp, nmp->nm_rsize, ",rsize", &buf, &blen);
1892 nfscl_printoptval(nmp, nmp->nm_wsize, ",wsize", &buf, &blen);
1893 nfscl_printoptval(nmp, nmp->nm_readdirsize, ",readdirsize", &buf,
1895 nfscl_printoptval(nmp, nmp->nm_readahead, ",readahead", &buf, &blen);
1896 nfscl_printoptval(nmp, nmp->nm_wcommitsize, ",wcommitsize", &buf,
1898 nfscl_printoptval(nmp, nmp->nm_timeo, ",timeout", &buf, &blen);
1899 nfscl_printoptval(nmp, nmp->nm_retry, ",retrans", &buf, &blen);