2 /* $Id: nfs_vfsops.c,v 1.38 2003/11/05 14:59:01 rees Exp $ */
6 * the regents of the university of michigan
9 * permission is granted to use, copy, create derivative works and redistribute
10 * this software and such derivative works for any purpose, so long as the name
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12 * pertaining to the use or distribution of this software without specific,
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15 * portion of this software, then the disclaimer below must also be included.
17 * this software is provided as is, without representation from the university
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22 * liable for any damages, including special, indirect, incidental, or
23 * consequential damages, with respect to any claim arising out of or in
24 * connection with the use of the software, even if it has been or is hereafter
25 * advised of the possibility of such damages.
29 * Copyright (c) 1989, 1993, 1995
30 * The Regents of the University of California. All rights reserved.
32 * This code is derived from software contributed to Berkeley by
33 * Rick Macklem at The University of Guelph.
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
38 * 1. Redistributions of source code must retain the above copyright
39 * notice, this list of conditions and the following disclaimer.
40 * 2. Redistributions in binary form must reproduce the above copyright
41 * notice, this list of conditions and the following disclaimer in the
42 * documentation and/or other materials provided with the distribution.
43 * 4. Neither the name of the University nor the names of its contributors
44 * may be used to endorse or promote products derived from this software
45 * without specific prior written permission.
47 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
48 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
50 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
51 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
52 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
53 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
54 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
55 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
56 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * @(#)nfs_vfsops.c 8.12 (Berkeley) 5/20/95
62 #include <sys/cdefs.h>
63 __FBSDID("$FreeBSD$");
65 #include "opt_bootp.h"
66 #include "opt_nfsroot.h"
68 #include <sys/param.h>
69 #include <sys/systm.h>
70 #include <sys/kernel.h>
71 #include <sys/kthread.h>
72 #include <sys/limits.h>
74 #include <sys/malloc.h>
76 #include <sys/module.h>
77 #include <sys/mount.h>
79 #include <sys/socket.h>
80 #include <sys/socketvar.h>
81 #include <sys/sockio.h>
82 #include <sys/sysctl.h>
83 #include <sys/unistd.h>
84 #include <sys/vnode.h>
85 #include <sys/signalvar.h>
88 #include <vm/vm_extern.h>
92 #include <net/route.h>
93 #include <netinet/in.h>
94 #include <netinet/in_var.h>
96 #include <rpc/rpcclnt.h>
98 #include <nfs/rpcv2.h>
99 #include <nfs/nfsproto.h>
100 #include <nfsclient/nfs.h>
101 #include <nfs4client/nfs4.h>
102 #include <nfsclient/nfsnode.h>
103 #include <nfsclient/nfsmount.h>
104 #include <nfs/xdr_subs.h>
105 #include <nfsclient/nfsm_subs.h>
106 #include <nfsclient/nfsdiskless.h>
108 #include <nfs4client/nfs4m_subs.h>
109 #include <nfs4client/nfs4_vfs.h>
111 #include <nfs4client/nfs4_dev.h>
112 #include <nfs4client/nfs4_idmap.h>
114 SYSCTL_NODE(_vfs, OID_AUTO, nfs4, CTLFLAG_RW, 0, "NFS4 filesystem");
115 SYSCTL_STRUCT(_vfs_nfs4, NFS_NFSSTATS, nfsstats, CTLFLAG_RD,
116 &nfsstats, nfsstats, "S,nfsstats");
118 static void nfs_decode_args(struct nfsmount *nmp, struct nfs_args *argp);
119 static void nfs4_daemon(void *arg);
120 static int mountnfs(struct nfs_args *, struct mount *,
121 struct sockaddr *, char *, struct vnode **,
123 static int nfs4_do_setclientid(struct nfsmount *nmp, struct ucred *cred);
124 static vfs_mount_t nfs_mount;
125 static vfs_cmount_t nfs_cmount;
126 static vfs_unmount_t nfs_unmount;
127 static vfs_root_t nfs_root;
128 static vfs_statfs_t nfs_statfs;
129 static vfs_sync_t nfs_sync;
132 * nfs vfs operations.
134 static struct vfsops nfs_vfsops = {
135 .vfs_init = nfs4_init,
136 .vfs_mount = nfs_mount,
137 .vfs_cmount = nfs_cmount,
138 .vfs_root = nfs_root,
139 .vfs_statfs = nfs_statfs,
140 .vfs_sync = nfs_sync,
141 .vfs_uninit = nfs4_uninit,
142 .vfs_unmount = nfs_unmount,
144 VFS_SET(nfs_vfsops, nfs4, VFCF_NETWORK);
146 static struct nfs_rpcops nfs4_rpcops = {
155 /* So that loader and kldload(2) can find us, wherever we are.. */
156 MODULE_VERSION(nfs4, 1);
158 void nfsargs_ntoh(struct nfs_args *);
161 nfs4_init(struct vfsconf *vfsp)
173 nfs4_uninit(struct vfsconf *vfsp)
187 nfs_statfs(struct mount *mp, struct statfs *sbp, struct thread *td)
190 struct nfs_statfs *sfp;
192 struct nfsmount *nmp = VFSTONFS(mp);
194 struct mbuf *mreq, *mrep = NULL, *md, *mb;
196 struct nfs4_compound cp;
197 struct nfs4_oparg_getattr ga;
198 struct nfsv4_fattr *fap = &ga.fa;
203 error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np);
207 nfsstats.rpccnt[NFSPROC_FSSTAT]++;
208 mreq = nfsm_reqhead(vp, NFSV4PROC_COMPOUND, NFSX_FH(1));
210 bpos = mtod(mb, caddr_t);
212 ga.bm = &nfsv4_fsattrbm;
213 nfs_v4initcompound(&cp);
215 nfsm_v4build_compound(&cp, "statfs()");
216 nfsm_v4build_putfh(&cp, vp);
217 nfsm_v4build_getattr(&cp, &ga);
218 nfsm_v4build_finalize(&cp);
220 nfsm_request(vp, NFSV4PROC_COMPOUND, td, td->td_ucred);
224 nfsm_v4dissect_compound(&cp);
225 nfsm_v4dissect_putfh(&cp);
226 nfsm_v4dissect_getattr(&cp, &ga);
228 nfs4_vfsop_statfs(fap, sbp, mp);
231 error = nfs_v4postop(&cp, error);
241 nfs_decode_args(struct nfsmount *nmp, struct nfs_args *argp)
250 * Silently clear NFSMNT_NOCONN if it's a TCP mount, it makes
251 * no sense in that context. Also, set appropriate retransmit
252 * and soft timeout behavior.
254 if (argp->sotype == SOCK_STREAM) {
255 nmp->nm_flag &= ~NFSMNT_NOCONN;
256 nmp->nm_flag |= NFSMNT_DUMBTIMR;
257 nmp->nm_timeo = NFS_MAXTIMEO;
258 nmp->nm_retry = NFS_RETRANS_TCP;
261 nmp->nm_flag &= ~NFSMNT_RDIRPLUS;
263 /* Re-bind if rsrvd port requested and wasn't on one */
264 adjsock = !(nmp->nm_flag & NFSMNT_RESVPORT)
265 && (argp->flags & NFSMNT_RESVPORT);
266 /* Also re-bind if we're switching to/from a connected UDP socket */
267 adjsock |= ((nmp->nm_flag & NFSMNT_NOCONN) !=
268 (argp->flags & NFSMNT_NOCONN));
270 /* Update flags atomically. Don't change the lock bits. */
271 nmp->nm_flag = argp->flags | nmp->nm_flag;
274 if ((argp->flags & NFSMNT_TIMEO) && argp->timeo > 0) {
275 nmp->nm_timeo = (argp->timeo * NFS_HZ + 5) / 10;
276 if (nmp->nm_timeo < NFS_MINTIMEO)
277 nmp->nm_timeo = NFS_MINTIMEO;
278 else if (nmp->nm_timeo > NFS_MAXTIMEO)
279 nmp->nm_timeo = NFS_MAXTIMEO;
282 if ((argp->flags & NFSMNT_RETRANS) && argp->retrans > 1) {
283 nmp->nm_retry = argp->retrans;
284 if (nmp->nm_retry > NFS_MAXREXMIT)
285 nmp->nm_retry = NFS_MAXREXMIT;
288 if (argp->flags & NFSMNT_NFSV3) {
289 if (argp->sotype == SOCK_DGRAM)
290 maxio = NFS_MAXDGRAMDATA;
294 maxio = NFS_V2MAXDATA;
296 if ((argp->flags & NFSMNT_WSIZE) && argp->wsize > 0) {
297 nmp->nm_wsize = argp->wsize;
298 /* Round down to multiple of blocksize */
299 nmp->nm_wsize &= ~(NFS_FABLKSIZE - 1);
300 if (nmp->nm_wsize <= 0)
301 nmp->nm_wsize = NFS_FABLKSIZE;
303 if (nmp->nm_wsize > maxio)
304 nmp->nm_wsize = maxio;
305 if (nmp->nm_wsize > MAXBSIZE)
306 nmp->nm_wsize = MAXBSIZE;
308 if ((argp->flags & NFSMNT_RSIZE) && argp->rsize > 0) {
309 nmp->nm_rsize = argp->rsize;
310 /* Round down to multiple of blocksize */
311 nmp->nm_rsize &= ~(NFS_FABLKSIZE - 1);
312 if (nmp->nm_rsize <= 0)
313 nmp->nm_rsize = NFS_FABLKSIZE;
315 if (nmp->nm_rsize > maxio)
316 nmp->nm_rsize = maxio;
317 if (nmp->nm_rsize > MAXBSIZE)
318 nmp->nm_rsize = MAXBSIZE;
320 if ((argp->flags & NFSMNT_READDIRSIZE) && argp->readdirsize > 0) {
321 nmp->nm_readdirsize = argp->readdirsize;
323 if (nmp->nm_readdirsize > maxio)
324 nmp->nm_readdirsize = maxio;
325 if (nmp->nm_readdirsize > nmp->nm_rsize)
326 nmp->nm_readdirsize = nmp->nm_rsize;
328 if ((argp->flags & NFSMNT_ACREGMIN) && argp->acregmin >= 0)
329 nmp->nm_acregmin = argp->acregmin;
331 nmp->nm_acregmin = NFS_MINATTRTIMO;
332 if ((argp->flags & NFSMNT_ACREGMAX) && argp->acregmax >= 0)
333 nmp->nm_acregmax = argp->acregmax;
335 nmp->nm_acregmax = NFS_MAXATTRTIMO;
336 if ((argp->flags & NFSMNT_ACDIRMIN) && argp->acdirmin >= 0)
337 nmp->nm_acdirmin = argp->acdirmin;
339 nmp->nm_acdirmin = NFS_MINDIRATTRTIMO;
340 if ((argp->flags & NFSMNT_ACDIRMAX) && argp->acdirmax >= 0)
341 nmp->nm_acdirmax = argp->acdirmax;
343 nmp->nm_acdirmax = NFS_MAXDIRATTRTIMO;
344 if (nmp->nm_acdirmin > nmp->nm_acdirmax)
345 nmp->nm_acdirmin = nmp->nm_acdirmax;
346 if (nmp->nm_acregmin > nmp->nm_acregmax)
347 nmp->nm_acregmin = nmp->nm_acregmax;
349 if ((argp->flags & NFSMNT_MAXGRPS) && argp->maxgrouplist >= 0) {
350 if (argp->maxgrouplist <= NFS_MAXGRPS)
351 nmp->nm_numgrps = argp->maxgrouplist;
353 nmp->nm_numgrps = NFS_MAXGRPS;
355 if ((argp->flags & NFSMNT_READAHEAD) && argp->readahead >= 0) {
356 if (argp->readahead <= NFS_MAXRAHEAD)
357 nmp->nm_readahead = argp->readahead;
359 nmp->nm_readahead = NFS_MAXRAHEAD;
361 if ((argp->flags & NFSMNT_DEADTHRESH) && argp->deadthresh >= 0) {
362 if (argp->deadthresh <= NFS_MAXDEADTHRESH)
363 nmp->nm_deadthresh = argp->deadthresh;
365 nmp->nm_deadthresh = NFS_MAXDEADTHRESH;
368 adjsock |= ((nmp->nm_sotype != argp->sotype) ||
369 (nmp->nm_soproto != argp->proto));
370 nmp->nm_sotype = argp->sotype;
371 nmp->nm_soproto = argp->proto;
373 if (nmp->nm_rpcclnt.rc_so && adjsock) {
374 nfs_safedisconnect(nmp);
375 if (nmp->nm_sotype == SOCK_DGRAM) {
376 while (nfs4_connect(nmp)) {
377 printf("nfs_args: retrying connect\n");
378 (void) tsleep((caddr_t)&lbolt,
389 * It seems a bit dumb to copyinstr() the host and path here and then
390 * bcopy() them in mountnfs(), but I wanted to detect errors before
391 * doing the sockargs() call because sockargs() allocates an mbuf and
392 * an error after that means that I have to release the mbuf.
396 nfs_cmount(struct mntarg *ma, void *data, int flags, struct thread *td)
398 struct nfs_args args;
401 error = copyin(data, (caddr_t)&args, sizeof (struct nfs_args));
405 ma = mount_arg(ma, "nfs_args", &args, sizeof args);
407 error = kernel_mount(ma, flags);
413 nfs_mount(struct mount *mp, struct thread *td)
416 struct nfs_args args;
417 struct sockaddr *nam;
422 if (mp->mnt_flag & MNT_ROOTFS) {
423 printf("NFSv4: nfs_mountroot not supported\n");
426 error = vfs_copyopt(mp->mnt_optnew, "nfs_args", &args, sizeof args);
430 if (args.version != NFS_ARGSVERSION)
431 return (EPROGMISMATCH);
432 if (mp->mnt_flag & MNT_UPDATE) {
433 struct nfsmount *nmp = VFSTONFS(mp);
438 * When doing an update, we can't change from or to
439 * v3, switch lockd strategies or change cookie translation
441 args.flags = (args.flags &
442 ~(NFSMNT_NFSV3 | NFSMNT_NFSV4 | NFSMNT_NOLOCKD)) |
444 (NFSMNT_NFSV3 | NFSMNT_NFSV4 | NFSMNT_NOLOCKD));
445 nfs_decode_args(nmp, &args);
449 error = copyinstr(args.hostname, hst, MNAMELEN-1, &len);
452 bzero(&hst[len], MNAMELEN - len);
453 /* sockargs() call must be after above copyin() calls */
454 error = getsockaddr(&nam, (caddr_t)args.addr, args.addrlen);
457 error = mountnfs(&args, mp, nam, hst, &vp, td->td_ucred);
462 * renew should be done async
463 * should re-scan mount queue each time
465 struct proc *nfs4_daemonproc;
468 nfs4_do_renew(struct nfsmount *nmp, struct ucred *cred)
470 struct nfs4_compound cp;
471 struct mbuf *mreq, *mrep = NULL, *md, *mb;
475 mreq = nfsm_reqhead(NULL, NFSV4PROC_COMPOUND, sizeof(uint64_t));
477 bpos = mtod(mb, caddr_t);
479 nfs_v4initcompound(&cp);
481 nfsm_v4build_compound(&cp, "nfs4_do_renew()");
482 nfsm_v4build_renew(&cp, nmp->nm_clientid);
483 nfsm_v4build_finalize(&cp);
485 nfsm_request_mnt(nmp, NFSV4PROC_COMPOUND, curthread, cred);
489 nfsm_v4dissect_compound(&cp);
490 nfsm_v4dissect_renew(&cp);
491 nmp->nm_last_renewal = time_second;
495 error = nfs_v4postop(&cp, error);
504 nfs4_daemon(void *arg)
507 struct nfsmount *nmp;
512 mtx_lock(&mountlist_mtx);
513 TAILQ_FOREACH(mp, &mountlist, mnt_list) {
514 if (strcmp(mp->mnt_vfc->vfc_name, "nfs4") != 0)
518 if (time_second < nmp->nm_last_renewal + nmp->nm_lease_time - 4)
520 mtx_unlock(&mountlist_mtx);
522 nfs4_do_renew(nmp, (struct ucred *) arg);
524 mtx_lock(&mountlist_mtx);
526 mtx_unlock(&mountlist_mtx);
528 /* Must kill the daemon here, or module unload will cause a panic */
531 nfs4_daemonproc = NULL;
533 /*printf("nfsv4 renewd exiting\n");*/
536 tsleep(&nfs4_daemonproc, PVFS, "nfs4", 2 * hz);
541 * Common code for mount and mountroot
544 mountnfs(struct nfs_args *argp, struct mount *mp, struct sockaddr *nam,
545 char *hst, struct vnode **vpp, struct ucred *cred)
547 struct nfsmount *nmp;
548 char *rpth, *cp1, *cp2;
549 int nlkup = 0, error;
550 struct nfs4_compound cp;
551 struct mbuf *mreq, *mrep = NULL, *md, *mb;
553 struct nfs4_oparg_lookup lkup;
554 struct nfs4_oparg_getfh gfh;
555 struct nfs4_oparg_getattr ga;
556 struct thread *td = curthread; /* XXX */
558 if (mp->mnt_flag & MNT_UPDATE) {
560 /* update paths, file handles, etc, here XXX */
564 nmp = uma_zalloc(nfsmount_zone, M_WAITOK);
565 bzero((caddr_t)nmp, sizeof (struct nfsmount));
566 TAILQ_INIT(&nmp->nm_bufq);
567 mp->mnt_data = (qaddr_t)nmp;
572 mtx_init(&nmp->nm_mtx, "NFS4mount lock", NULL, MTX_DEF);
574 nmp->nm_maxfilesize = 0xffffffffLL;
575 nmp->nm_timeo = NFS_TIMEO;
576 nmp->nm_retry = NFS_RETRANS;
577 nmp->nm_wsize = NFS_WSIZE;
578 nmp->nm_rsize = NFS_RSIZE;
579 nmp->nm_readdirsize = NFS_READDIRSIZE;
580 nmp->nm_numgrps = NFS_MAXGRPS;
581 nmp->nm_readahead = NFS_DEFRAHEAD;
582 nmp->nm_deadthresh = NFS_MAXDEADTHRESH;
583 vfs_mountedfrom(mp, hst);
585 /* Set up the sockets and per-host congestion */
586 nmp->nm_sotype = argp->sotype;
587 nmp->nm_soproto = argp->proto;
588 nmp->nm_rpcops = &nfs4_rpcops;
590 mp->mnt_stat.f_iosize = PAGE_SIZE;
592 argp->flags |= (NFSMNT_NFSV3 | NFSMNT_NFSV4);
594 nfs_decode_args(nmp, argp);
596 if ((error = nfs4_connect(nmp)))
599 mreq = nfsm_reqhead(NULL, NFSV4PROC_COMPOUND, NFSX_FH(1));
601 bpos = mtod(mb, caddr_t);
603 ga.bm = &nfsv4_fsinfobm;
604 nfs_v4initcompound(&cp);
606 /* Get remote path */
610 nfsm_v4build_compound(&cp, "mountnfs()");
611 nfsm_v4build_putrootfh(&cp);
612 for (cp1 = rpth; cp1 && *cp1; cp1 = cp2) {
617 for (cp2 = cp1; *cp2 && *cp2 != '/'; cp2++)
620 lkup.namelen = cp2 - cp1;
621 nfsm_v4build_lookup(&cp, &lkup);
624 nfsm_v4build_getfh(&cp, &gfh);
625 nfsm_v4build_getattr(&cp, &ga);
626 nfsm_v4build_finalize(&cp);
628 nfsm_request_mnt(nmp, NFSV4PROC_COMPOUND, td, cred);
632 nfsm_v4dissect_compound(&cp);
633 nfsm_v4dissect_putrootfh(&cp);
635 nfsm_v4dissect_lookup(&cp);
636 nfsm_v4dissect_getfh(&cp, &gfh);
637 nfsm_v4dissect_getattr(&cp, &ga);
639 nfs4_vfsop_fsinfo(&ga.fa, nmp);
640 nmp->nm_state |= NFSSTA_GOTFSINFO;
642 /* Copy root fh into nfsmount. */
643 nmp->nm_fhsize = gfh.fh_len;
644 bcopy(&gfh.fh_val, nmp->nm_fh, nmp->nm_fhsize);
645 nmp->nm_last_renewal = time_second;
647 if ((error = nfs4_do_setclientid(nmp, cred)) != 0)
650 /* Start renewd if it isn't already running */
651 if (nfs4_daemonproc == NULL)
652 kthread_create(nfs4_daemon, crdup(cred), &nfs4_daemonproc,
653 (RFPROC|RFMEM), 0, "nfs4rd");
657 error = nfs_v4postop(&cp, error);
663 mtx_destroy(&nmp->nm_mtx);
664 nfs4_disconnect(nmp);
665 uma_zfree(nfsmount_zone, nmp);
672 * unmount system call
675 nfs_unmount(struct mount *mp, int mntflags, struct thread *td)
677 struct nfsmount *nmp;
678 int error, flags = 0;
680 if (mntflags & MNT_FORCE)
684 * Goes something like this..
685 * - Call vflush(, td) to clear out vnodes for this filesystem
687 * - Free up the data structures
689 /* In the forced case, cancel any outstanding requests. */
690 if (flags & FORCECLOSE) {
691 error = nfs_nmcancelreqs(nmp);
697 error = vflush(mp, 0, flags, td);
702 * We are now committed to the unmount.
704 nfs4_disconnect(nmp);
705 FREE(nmp->nm_nam, M_SONAME);
707 /* XXX there's a race condition here for SMP */
708 wakeup(&nfs4_daemonproc);
710 mtx_destroy(&nmp->nm_mtx);
711 uma_zfree(nfsmount_zone, nmp);
716 * Return root of a filesystem
719 nfs_root(struct mount *mp, int flags, struct vnode **vpp, struct thread *td)
722 struct nfsmount *nmp;
727 error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np);
731 if (vp->v_type == VNON)
733 vp->v_vflag |= VV_ROOT;
740 * Flush out the buffer cache
744 nfs_sync(struct mount *mp, int waitfor, struct thread *td)
746 struct vnode *vp, *mvp;
747 int error, allerror = 0;
750 * Force stale buffer cache information to be flushed.
754 MNT_VNODE_FOREACH(vp, mp, mvp) {
757 if (VOP_ISLOCKED(vp, NULL) ||
758 vp->v_bufobj.bo_dirty.bv_cnt == 0 ||
759 waitfor == MNT_LAZY) {
764 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td)) {
766 MNT_VNODE_FOREACH_ABORT_ILOCKED(mp, mvp);
769 error = VOP_FSYNC(vp, waitfor, td);
772 VOP_UNLOCK(vp, 0, td);
782 nfs4_do_setclientid(struct nfsmount *nmp, struct ucred *cred)
784 struct nfs4_oparg_setclientid scid;
785 struct nfs4_compound cp;
786 struct mbuf *mreq, *mrep = NULL, *md, *mb;
789 char *ipsrc = NULL, uaddr[24], name[24];
791 static unsigned long seq;
794 #ifndef NFS4_USE_RPCCLNT
797 if (nmp->nm_clientid) {
798 printf("nfs4_do_setclientid: already have clientid!\n");
803 /* Try not to re-use clientids */
807 #ifdef NFS4_USE_RPCCLNT
808 scid.cb_netid = (nmp->nm_rpcclnt.rc_sotype == SOCK_STREAM) ? "tcp" : "udp";
810 scid.cb_netid = "tcp";
811 scid.cb_netidlen = 3;
812 scid.cb_prog = 0x1234; /* XXX */
814 /* Do a route lookup to find our source address for talking to this server */
815 bzero(&ro, sizeof ro);
817 #ifdef NFS4_USE_RPCCLNT
818 ro.ro_dst = *nmp->nm_rpcclnt.rc_name;
821 if (ro.ro_rt == NULL) {
822 error = EHOSTUNREACH;
825 ipsrc = inet_ntoa(IA_SIN(ifatoia(ro.ro_rt->rt_ifa))->sin_addr);
826 sprintf(uaddr, "%s.12.48", ipsrc);
827 scid.cb_univaddr = uaddr;
828 scid.cb_univaddrlen = strlen(uaddr);
832 sprintf(name, "%s-%d", ipsrc, (int) ((seq + try) % 1000000L));
833 scid.namelen = strlen(name);
835 nfs_v4initcompound(&cp);
837 mreq = nfsm_reqhead(NULL, NFSV4PROC_COMPOUND, NFSX_FH(1));
839 bpos = mtod(mb, caddr_t);
841 nfsm_v4build_compound(&cp, "nfs4_do_setclientid()");
842 nfsm_v4build_setclientid(&cp, &scid);
843 nfsm_v4build_finalize(&cp);
845 nfsm_request_mnt(nmp, NFSV4PROC_COMPOUND, curthread, cred);
849 nfsm_v4dissect_compound(&cp);
850 nfsm_v4dissect_setclientid(&cp, &scid);
851 nmp->nm_clientid = scid.clientid;
853 error = nfs_v4postop(&cp, error);
857 mreq = nfsm_reqhead(NULL, NFSV4PROC_COMPOUND, NFSX_FH(1));
859 bpos = mtod(mb, caddr_t);
861 nfs_v4initcompound(&cp);
863 nfsm_v4build_compound(&cp, "nfs4_do_setclientid() (confirm)");
864 nfsm_v4build_setclientid_confirm(&cp, &scid);
865 nfsm_v4build_finalize(&cp);
867 nfsm_request_mnt(nmp, NFSV4PROC_COMPOUND, curthread, cred);
871 nfsm_v4dissect_compound(&cp);
872 nfsm_v4dissect_setclientid_confirm(&cp);
875 error = nfs_v4postop(&cp, error);
879 if (error == NFSERR_CLID_INUSE && (++try < NFS4_SETCLIENTID_MAXTRIES))