2 * Copyright (c) 1989, 1991, 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 * @(#)nfs_socket.c 8.5 (Berkeley) 3/30/95
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
39 * Socket operations for use by nfs
42 #include "opt_inet6.h"
43 #include "opt_kdtrace.h"
44 #include "opt_kgssapi.h"
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/kernel.h>
49 #include <sys/limits.h>
51 #include <sys/malloc.h>
53 #include <sys/mount.h>
54 #include <sys/mutex.h>
56 #include <sys/signalvar.h>
57 #include <sys/syscallsubr.h>
58 #include <sys/sysctl.h>
59 #include <sys/syslog.h>
60 #include <sys/vnode.h>
64 #include <nfs/nfsproto.h>
65 #include <nfsclient/nfs.h>
66 #include <nfs/xdr_subs.h>
67 #include <nfsclient/nfsm_subs.h>
68 #include <nfsclient/nfsmount.h>
69 #include <nfsclient/nfsnode.h>
72 #include <sys/dtrace_bsd.h>
74 dtrace_nfsclient_nfs23_start_probe_func_t
75 dtrace_nfsclient_nfs23_start_probe;
77 dtrace_nfsclient_nfs23_done_probe_func_t
78 dtrace_nfsclient_nfs23_done_probe;
81 * Registered probes by RPC type.
83 uint32_t nfsclient_nfs2_start_probes[NFS_NPROCS];
84 uint32_t nfsclient_nfs2_done_probes[NFS_NPROCS];
86 uint32_t nfsclient_nfs3_start_probes[NFS_NPROCS];
87 uint32_t nfsclient_nfs3_done_probes[NFS_NPROCS];
90 static int nfs_bufpackets = 4;
91 static int nfs_reconnects;
92 static int nfs3_jukebox_delay = 10;
93 static int nfs_skip_wcc_data_onerr = 1;
94 static int fake_wchan;
96 SYSCTL_DECL(_vfs_oldnfs);
98 SYSCTL_INT(_vfs_oldnfs, OID_AUTO, bufpackets, CTLFLAG_RW, &nfs_bufpackets, 0,
99 "Buffer reservation size 2 < x < 64");
100 SYSCTL_INT(_vfs_oldnfs, OID_AUTO, reconnects, CTLFLAG_RD, &nfs_reconnects, 0,
101 "Number of times the nfs client has had to reconnect");
102 SYSCTL_INT(_vfs_oldnfs, OID_AUTO, nfs3_jukebox_delay, CTLFLAG_RW,
103 &nfs3_jukebox_delay, 0,
104 "Number of seconds to delay a retry after receiving EJUKEBOX");
105 SYSCTL_INT(_vfs_oldnfs, OID_AUTO, skip_wcc_data_onerr, CTLFLAG_RW,
106 &nfs_skip_wcc_data_onerr, 0,
107 "Disable weak cache consistency checking when server returns an error");
109 static void nfs_down(struct nfsmount *, struct thread *, const char *,
111 static void nfs_up(struct nfsmount *, struct thread *, const char *,
113 static int nfs_msg(struct thread *, const char *, const char *, int);
115 extern int nfsv2_procid[];
117 struct nfs_cached_auth {
118 int ca_refs; /* refcount, including 1 from the cache */
119 uid_t ca_uid; /* uid that corresponds to this auth */
120 AUTH *ca_auth; /* RPC auth handle */
127 static enum nfs_rto_timer_t nfs_proct[NFS_NPROCS] = {
128 NFS_DEFAULT_TIMER, /* NULL */
129 NFS_GETATTR_TIMER, /* GETATTR */
130 NFS_DEFAULT_TIMER, /* SETATTR */
131 NFS_LOOKUP_TIMER, /* LOOKUP */
132 NFS_GETATTR_TIMER, /* ACCESS */
133 NFS_READ_TIMER, /* READLINK */
134 NFS_READ_TIMER, /* READ */
135 NFS_WRITE_TIMER, /* WRITE */
136 NFS_DEFAULT_TIMER, /* CREATE */
137 NFS_DEFAULT_TIMER, /* MKDIR */
138 NFS_DEFAULT_TIMER, /* SYMLINK */
139 NFS_DEFAULT_TIMER, /* MKNOD */
140 NFS_DEFAULT_TIMER, /* REMOVE */
141 NFS_DEFAULT_TIMER, /* RMDIR */
142 NFS_DEFAULT_TIMER, /* RENAME */
143 NFS_DEFAULT_TIMER, /* LINK */
144 NFS_READ_TIMER, /* READDIR */
145 NFS_READ_TIMER, /* READDIRPLUS */
146 NFS_DEFAULT_TIMER, /* FSSTAT */
147 NFS_DEFAULT_TIMER, /* FSINFO */
148 NFS_DEFAULT_TIMER, /* PATHCONF */
149 NFS_DEFAULT_TIMER, /* COMMIT */
150 NFS_DEFAULT_TIMER, /* NOOP */
154 * Choose the correct RTT timer for this NFS procedure.
156 static inline enum nfs_rto_timer_t
157 nfs_rto_timer(u_int32_t procnum)
160 return (nfs_proct[procnum]);
164 * Initialize the RTT estimator state for a new mount point.
167 nfs_init_rtt(struct nfsmount *nmp)
171 for (i = 0; i < NFS_MAX_TIMER; i++) {
172 nmp->nm_timers[i].rt_srtt = hz;
173 nmp->nm_timers[i].rt_deviate = 0;
174 nmp->nm_timers[i].rt_rtxcur = hz;
179 * Initialize sockets and congestion for a new NFS connection.
180 * We do not free the sockaddr if error.
183 nfs_connect(struct nfsmount *nmp)
185 int rcvreserve, sndreserve;
187 struct sockaddr *saddr;
188 struct ucred *origcred;
189 struct thread *td = curthread;
191 struct netconfig *nconf;
193 int one = 1, retries;
197 * We need to establish the socket using the credentials of
198 * the mountpoint. Some parts of this process (such as
199 * sobind() and soconnect()) will use the curent thread's
200 * credential instead of the socket credential. To work
201 * around this, temporarily change the current thread's
202 * credential to that of the mountpoint.
204 * XXX: It would be better to explicitly pass the correct
205 * credential to sobind() and soconnect().
207 origcred = td->td_ucred;
208 td->td_ucred = nmp->nm_mountp->mnt_cred;
212 if (nmp->nm_flag & NFSMNT_NFSV3)
214 else if (nmp->nm_flag & NFSMNT_NFSV4)
216 if (saddr->sa_family == AF_INET)
217 if (nmp->nm_sotype == SOCK_DGRAM)
218 nconf = getnetconfigent("udp");
220 nconf = getnetconfigent("tcp");
222 if (nmp->nm_sotype == SOCK_DGRAM)
223 nconf = getnetconfigent("udp6");
225 nconf = getnetconfigent("tcp6");
228 * Get buffer reservation size from sysctl, but impose reasonable
231 pktscale = nfs_bufpackets;
236 mtx_lock(&nmp->nm_mtx);
237 if (nmp->nm_sotype == SOCK_DGRAM) {
238 sndreserve = (nmp->nm_wsize + NFS_MAXPKTHDR) * pktscale;
239 rcvreserve = (max(nmp->nm_rsize, nmp->nm_readdirsize) +
240 NFS_MAXPKTHDR) * pktscale;
241 } else if (nmp->nm_sotype == SOCK_SEQPACKET) {
242 sndreserve = (nmp->nm_wsize + NFS_MAXPKTHDR) * pktscale;
243 rcvreserve = (max(nmp->nm_rsize, nmp->nm_readdirsize) +
244 NFS_MAXPKTHDR) * pktscale;
246 if (nmp->nm_sotype != SOCK_STREAM)
247 panic("nfscon sotype");
248 sndreserve = (nmp->nm_wsize + NFS_MAXPKTHDR +
249 sizeof (u_int32_t)) * pktscale;
250 rcvreserve = (nmp->nm_rsize + NFS_MAXPKTHDR +
251 sizeof (u_int32_t)) * pktscale;
253 mtx_unlock(&nmp->nm_mtx);
255 client = clnt_reconnect_create(nconf, saddr, NFS_PROG, vers,
256 sndreserve, rcvreserve);
257 CLNT_CONTROL(client, CLSET_WAITCHAN, "nfsreq");
258 if (nmp->nm_flag & NFSMNT_INT)
259 CLNT_CONTROL(client, CLSET_INTERRUPTIBLE, &one);
260 if (nmp->nm_flag & NFSMNT_RESVPORT)
261 CLNT_CONTROL(client, CLSET_PRIVPORT, &one);
262 if ((nmp->nm_flag & NFSMNT_SOFT) != 0) {
263 if (nmp->nm_sotype == SOCK_DGRAM)
265 * For UDP, the large timeout for a reconnect will
266 * be set to "nm_retry * nm_timeo / 2", so we only
267 * want to do 2 reconnect timeout retries.
271 retries = nmp->nm_retry;
274 CLNT_CONTROL(client, CLSET_RETRIES, &retries);
277 * For UDP, there are 2 timeouts:
278 * - CLSET_RETRY_TIMEOUT sets the initial timeout for the timer
279 * that does a retransmit of an RPC request using the same socket
280 * and xid. This is what you normally want to do, since NFS
281 * servers depend on "same xid" for their Duplicate Request Cache.
282 * - timeout specified in CLNT_CALL_MBUF(), which specifies when
283 * retransmits on the same socket should fail and a fresh socket
284 * created. Each of these timeouts counts as one CLSET_RETRIES,
286 * Set the initial retransmit timeout for UDP. This timeout doesn't
287 * exist for TCP and the following call just fails, which is ok.
289 timo.tv_sec = nmp->nm_timeo / NFS_HZ;
290 timo.tv_usec = (nmp->nm_timeo % NFS_HZ) * 1000000 / NFS_HZ;
291 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, &timo);
293 mtx_lock(&nmp->nm_mtx);
294 if (nmp->nm_client) {
296 * Someone else already connected.
298 CLNT_RELEASE(client);
300 nmp->nm_client = client;
303 * Protocols that do not require connections may be optionally left
304 * unconnected for servers that reply from a port other than NFS_PORT.
306 if (!(nmp->nm_flag & NFSMNT_NOCONN)) {
307 mtx_unlock(&nmp->nm_mtx);
308 CLNT_CONTROL(client, CLSET_CONNECT, &one);
310 mtx_unlock(&nmp->nm_mtx);
312 /* Restore current thread's credentials. */
313 td->td_ucred = origcred;
315 mtx_lock(&nmp->nm_mtx);
316 /* Initialize other non-zero congestion variables. */
318 mtx_unlock(&nmp->nm_mtx);
323 * NFS disconnect. Clean up and unlink.
326 nfs_disconnect(struct nfsmount *nmp)
330 mtx_lock(&nmp->nm_mtx);
331 if (nmp->nm_client) {
332 client = nmp->nm_client;
333 nmp->nm_client = NULL;
334 mtx_unlock(&nmp->nm_mtx);
335 rpc_gss_secpurge_call(client);
337 CLNT_RELEASE(client);
339 mtx_unlock(&nmp->nm_mtx);
343 nfs_safedisconnect(struct nfsmount *nmp)
350 nfs_getauth(struct nfsmount *nmp, struct ucred *cred)
352 rpc_gss_service_t svc;
355 switch (nmp->nm_secflavor) {
356 case RPCSEC_GSS_KRB5:
357 case RPCSEC_GSS_KRB5I:
358 case RPCSEC_GSS_KRB5P:
359 if (!nmp->nm_mech_oid)
360 if (!rpc_gss_mech_to_oid_call("kerberosv5",
363 if (nmp->nm_secflavor == RPCSEC_GSS_KRB5)
364 svc = rpc_gss_svc_none;
365 else if (nmp->nm_secflavor == RPCSEC_GSS_KRB5I)
366 svc = rpc_gss_svc_integrity;
368 svc = rpc_gss_svc_privacy;
369 auth = rpc_gss_secfind_call(nmp->nm_client, cred,
370 nmp->nm_principal, nmp->nm_mech_oid, svc);
376 return (authunix_create(cred));
382 * Callback from the RPC code to generate up/down notifications.
385 struct nfs_feedback_arg {
386 struct nfsmount *nf_mount;
387 int nf_lastmsg; /* last tprintf */
389 struct thread *nf_td;
393 nfs_feedback(int type, int proc, void *arg)
395 struct nfs_feedback_arg *nf = (struct nfs_feedback_arg *) arg;
396 struct nfsmount *nmp = nf->nf_mount;
399 getmicrouptime(&now);
402 case FEEDBACK_REXMIT2:
403 case FEEDBACK_RECONNECT:
404 if (nf->nf_lastmsg + nmp->nm_tprintf_delay < now.tv_sec) {
405 nfs_down(nmp, nf->nf_td,
406 "not responding", 0, NFSSTA_TIMEO);
407 nf->nf_tprintfmsg = TRUE;
408 nf->nf_lastmsg = now.tv_sec;
413 nfs_up(nf->nf_mount, nf->nf_td,
414 "is alive again", NFSSTA_TIMEO, nf->nf_tprintfmsg);
420 * nfs_request - goes something like this
421 * - fill in request struct
422 * - links it into list
423 * - calls nfs_send() for first transmit
424 * - calls nfs_receive() to get reply
425 * - break down rpc header and return with nfs reply pointed to
427 * nb: always frees up mreq mbuf list
430 nfs_request(struct vnode *vp, struct mbuf *mreq, int procnum,
431 struct thread *td, struct ucred *cred, struct mbuf **mrp,
432 struct mbuf **mdp, caddr_t *dposp)
436 struct nfsmount *nmp;
440 int error = 0, timeo;
443 enum nfs_rto_timer_t timer;
444 struct nfs_feedback_arg nf;
445 struct rpc_callextra ext;
449 /* Reject requests while attempting a forced unmount. */
450 if (vp->v_mount->mnt_kern_flag & MNTK_UNMOUNTF) {
454 nmp = VFSTONFS(vp->v_mount);
455 bzero(&nf, sizeof(struct nfs_feedback_arg));
458 getmicrouptime(&now);
459 nf.nf_lastmsg = now.tv_sec -
460 ((nmp->nm_tprintf_delay) - (nmp->nm_tprintf_initial_delay));
463 * XXX if not already connected call nfs_connect now. Longer
464 * term, change nfs_mount to call nfs_connect unconditionally
465 * and let clnt_reconnect_create handle reconnects.
470 auth = nfs_getauth(nmp, cred);
475 bzero(&ext, sizeof(ext));
478 ext.rc_feedback = nfs_feedback;
479 ext.rc_feedback_arg = &nf;
482 * Use a conservative timeout for RPCs other than getattr,
483 * lookup, read or write. The justification for doing "other"
484 * this way is that these RPCs happen so infrequently that
485 * timer est. would probably be stale. Also, since many of
486 * these RPCs are non-idempotent, a conservative timeout is
489 timer = nfs_rto_timer(procnum);
490 if (timer != NFS_DEFAULT_TIMER)
491 ext.rc_timers = &nmp->nm_timers[timer - 1];
493 ext.rc_timers = NULL;
496 if (dtrace_nfsclient_nfs23_start_probe != NULL) {
500 if (nmp->nm_flag & NFSMNT_NFSV3) {
501 probe_id = nfsclient_nfs3_start_probes[procnum];
502 probe_procnum = procnum;
504 probe_id = nfsclient_nfs2_start_probes[procnum];
505 probe_procnum = nfsv2_procid[procnum];
508 (dtrace_nfsclient_nfs23_start_probe)(probe_id, vp,
509 mreq, cred, probe_procnum);
513 nfsstats.rpcrequests++;
516 * This timeout specifies when a new socket should be created,
517 * along with new xid values. For UDP, this should be done
518 * infrequently, since retransmits of RPC requests should normally
521 if (nmp->nm_sotype == SOCK_DGRAM) {
522 if ((nmp->nm_flag & NFSMNT_SOFT) != 0) {
524 * CLSET_RETRIES is set to 2, so this should be half
525 * of the total timeout required.
527 timeo = nmp->nm_retry * nmp->nm_timeo / 2;
530 timo.tv_sec = timeo / NFS_HZ;
531 timo.tv_usec = (timeo % NFS_HZ) * 1000000 / NFS_HZ;
533 /* For UDP hard mounts, use a large value. */
534 timo.tv_sec = NFS_MAXTIMEO / NFS_HZ;
538 timo.tv_sec = nmp->nm_timeo / NFS_HZ;
539 timo.tv_usec = (nmp->nm_timeo % NFS_HZ) * 1000000 / NFS_HZ;
542 stat = CLNT_CALL_MBUF(nmp->nm_client, &ext,
543 (nmp->nm_flag & NFSMNT_NFSV3) ? procnum : nfsv2_procid[procnum],
547 * If there was a successful reply and a tprintf msg.
548 * tprintf a response.
550 if (stat == RPC_SUCCESS)
552 else if (stat == RPC_TIMEDOUT) {
553 nfsstats.rpctimeouts++;
555 } else if (stat == RPC_VERSMISMATCH) {
556 nfsstats.rpcinvalid++;
558 } else if (stat == RPC_PROGVERSMISMATCH) {
559 nfsstats.rpcinvalid++;
560 error = EPROTONOSUPPORT;
561 } else if (stat == RPC_INTR) {
564 nfsstats.rpcinvalid++;
570 KASSERT(mrep != NULL, ("mrep shouldn't be NULL if no error\n"));
573 * Search for any mbufs that are not a multiple of 4 bytes long
574 * or with m_data not longword aligned.
575 * These could cause pointer alignment problems, so copy them to
576 * well aligned mbufs.
578 error = nfs_realign(&mrep, M_NOWAIT);
579 if (error == ENOMEM) {
582 nfsstats.rpcinvalid++;
587 dpos = mtod(mrep, caddr_t);
588 tl = nfsm_dissect(u_int32_t *, NFSX_UNSIGNED);
590 error = fxdr_unsigned(int, *tl);
591 if ((nmp->nm_flag & NFSMNT_NFSV3) &&
592 error == NFSERR_TRYLATER) {
595 waituntil = time_second + nfs3_jukebox_delay;
596 while (time_second < waituntil)
597 (void)tsleep(&fake_wchan, PSOCK, "nqnfstry",
602 * Make sure NFSERR_RETERR isn't bogusly set by a server
603 * such as amd. (No actual NFS error has bit 31 set.)
605 error &= ~NFSERR_RETERR;
608 * If the File Handle was stale, invalidate the lookup
609 * cache, just in case.
614 * Skip wcc data on non-ENOENT NFS errors for now.
615 * NetApp filers return corrupt postop attrs in the
616 * wcc data for NFS err EROFS. Not sure if they could
617 * return corrupt postop attrs for others errors.
618 * Blocking ENOENT post-op attributes breaks negative
619 * name caching, so always allow it through.
621 if ((nmp->nm_flag & NFSMNT_NFSV3) &&
622 (!nfs_skip_wcc_data_onerr || error == ENOENT)) {
626 error |= NFSERR_RETERR;
633 if (dtrace_nfsclient_nfs23_done_probe != NULL) {
637 if (nmp->nm_flag & NFSMNT_NFSV3) {
638 probe_id = nfsclient_nfs3_done_probes[procnum];
639 probe_procnum = procnum;
641 probe_id = nfsclient_nfs2_done_probes[procnum];
642 probe_procnum = (nmp->nm_flag & NFSMNT_NFSV3) ?
643 procnum : nfsv2_procid[procnum];
646 (dtrace_nfsclient_nfs23_done_probe)(probe_id, vp,
647 mreq, cred, probe_procnum, 0);
659 if (dtrace_nfsclient_nfs23_done_probe != NULL) {
663 if (nmp->nm_flag & NFSMNT_NFSV3) {
664 probe_id = nfsclient_nfs3_done_probes[procnum];
665 probe_procnum = procnum;
667 probe_id = nfsclient_nfs2_done_probes[procnum];
668 probe_procnum = (nmp->nm_flag & NFSMNT_NFSV3) ?
669 procnum : nfsv2_procid[procnum];
672 (dtrace_nfsclient_nfs23_done_probe)(probe_id, vp,
673 mreq, cred, probe_procnum, error);
683 * Mark all of an nfs mount's outstanding requests with R_SOFTTERM and
684 * wait for all requests to complete. This is used by forced unmounts
685 * to terminate any outstanding RPCs.
688 nfs_nmcancelreqs(struct nfsmount *nmp)
692 CLNT_CLOSE(nmp->nm_client);
697 * Any signal that can interrupt an NFS operation in an intr mount
698 * should be added to this set. SIGSTOP and SIGKILL cannot be masked.
700 int nfs_sig_set[] = {
710 * Check to see if one of the signals in our subset is pending on
711 * the process (in an intr mount).
714 nfs_sig_pending(sigset_t set)
718 for (i = 0 ; i < sizeof(nfs_sig_set)/sizeof(int) ; i++)
719 if (SIGISMEMBER(set, nfs_sig_set[i]))
725 * The set/restore sigmask functions are used to (temporarily) overwrite
726 * the process p_sigmask during an RPC call (for example). These are also
727 * used in other places in the NFS client that might tsleep().
730 nfs_set_sigmask(struct thread *td, sigset_t *oldset)
738 td = curthread; /* XXX */
740 /* Remove the NFS set of signals from newset. */
742 mtx_lock(&p->p_sigacts->ps_mtx);
743 for (i = 0 ; i < sizeof(nfs_sig_set)/sizeof(int) ; i++) {
745 * But make sure we leave the ones already masked
746 * by the process, i.e. remove the signal from the
747 * temporary signalmask only if it wasn't already
750 if (!SIGISMEMBER(td->td_sigmask, nfs_sig_set[i]) &&
751 !SIGISMEMBER(p->p_sigacts->ps_sigignore, nfs_sig_set[i]))
752 SIGDELSET(newset, nfs_sig_set[i]);
754 mtx_unlock(&p->p_sigacts->ps_mtx);
756 kern_sigprocmask(td, SIG_SETMASK, &newset, oldset, 0);
760 nfs_restore_sigmask(struct thread *td, sigset_t *set)
763 td = curthread; /* XXX */
764 kern_sigprocmask(td, SIG_SETMASK, set, NULL, 0);
768 * NFS wrapper to msleep(), that shoves a new p_sigmask and restores the
769 * old one after msleep() returns.
772 nfs_msleep(struct thread *td, void *ident, struct mtx *mtx, int priority,
773 char *wmesg, int timo)
779 if ((priority & PCATCH) == 0)
780 return msleep(ident, mtx, priority, wmesg, timo);
782 td = curthread; /* XXX */
783 nfs_set_sigmask(td, &oldset);
784 error = msleep(ident, mtx, priority, wmesg, timo);
785 nfs_restore_sigmask(td, &oldset);
791 * Test for a termination condition pending on the process.
792 * This is used for NFSMNT_INT mounts.
795 nfs_sigintr(struct nfsmount *nmp, struct thread *td)
800 /* Terminate all requests while attempting a forced unmount. */
801 if (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF)
803 if (!(nmp->nm_flag & NFSMNT_INT))
809 tmpset = p->p_siglist;
810 SIGSETOR(tmpset, td->td_siglist);
811 SIGSETNAND(tmpset, td->td_sigmask);
812 mtx_lock(&p->p_sigacts->ps_mtx);
813 SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore);
814 mtx_unlock(&p->p_sigacts->ps_mtx);
815 if ((SIGNOTEMPTY(p->p_siglist) || SIGNOTEMPTY(td->td_siglist))
816 && nfs_sig_pending(tmpset)) {
825 nfs_msg(struct thread *td, const char *server, const char *msg, int error)
829 p = td ? td->td_proc : NULL;
831 tprintf(p, LOG_INFO, "nfs server %s: %s, error %d\n", server,
834 tprintf(p, LOG_INFO, "nfs server %s: %s\n", server, msg);
839 nfs_down(struct nfsmount *nmp, struct thread *td, const char *msg,
840 int error, int flags)
844 mtx_lock(&nmp->nm_mtx);
845 if ((flags & NFSSTA_TIMEO) && !(nmp->nm_state & NFSSTA_TIMEO)) {
846 nmp->nm_state |= NFSSTA_TIMEO;
847 mtx_unlock(&nmp->nm_mtx);
848 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
851 mtx_unlock(&nmp->nm_mtx);
852 mtx_lock(&nmp->nm_mtx);
853 if ((flags & NFSSTA_LOCKTIMEO) &&
854 !(nmp->nm_state & NFSSTA_LOCKTIMEO)) {
855 nmp->nm_state |= NFSSTA_LOCKTIMEO;
856 mtx_unlock(&nmp->nm_mtx);
857 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
860 mtx_unlock(&nmp->nm_mtx);
861 nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, error);
865 nfs_up(struct nfsmount *nmp, struct thread *td, const char *msg,
866 int flags, int tprintfmsg)
871 nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, 0);
873 mtx_lock(&nmp->nm_mtx);
874 if ((flags & NFSSTA_TIMEO) && (nmp->nm_state & NFSSTA_TIMEO)) {
875 nmp->nm_state &= ~NFSSTA_TIMEO;
876 mtx_unlock(&nmp->nm_mtx);
877 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
880 mtx_unlock(&nmp->nm_mtx);
882 mtx_lock(&nmp->nm_mtx);
883 if ((flags & NFSSTA_LOCKTIMEO) &&
884 (nmp->nm_state & NFSSTA_LOCKTIMEO)) {
885 nmp->nm_state &= ~NFSSTA_LOCKTIMEO;
886 mtx_unlock(&nmp->nm_mtx);
887 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
890 mtx_unlock(&nmp->nm_mtx);