2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. 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_nqlease.c 8.9 (Berkeley) 5/20/95
33 * $FreeBSD: src/sys/nfs/nfs_nqlease.c,v 1.50 2000/02/13 03:32:05 peter Exp $
34 * $DragonFly: src/sys/vfs/nfs/nfs_kerb.c,v 1.3 2006/09/05 00:55:50 dillon Exp $
37 #include <sys/param.h>
38 #include <sys/vnode.h>
39 #include <sys/malloc.h>
40 #include <sys/mount.h>
41 #include <sys/kernel.h>
43 #include <sys/systm.h>
45 #include <sys/socket.h>
46 #include <sys/socketvar.h>
47 #include <sys/protosw.h>
49 #include <netinet/in.h>
53 #include "nfsm_subs.h"
58 #include <sys/thread2.h>
66 * Nqnfs client helper daemon. Runs once a second to expire leases.
67 * It also get authorization strings for "kerb" mounts.
68 * It must start at the beginning of the list again after any potential
69 * "sleep" since nfs_reclaim() called from vclean() can pull a node off
70 * the list asynchronously.
73 nfs_clientd(struct nfsmount *nmp, struct ucred *cred, struct nfsd_cargs *ncd,
74 int flag, caddr_t argp, struct thread *td)
76 struct nfsuid *nuidp, *nnuidp;
80 * If an authorization string is being passed in, get it.
82 if ((flag & NFSSVC_GOTAUTH) &&
83 (nmp->nm_state & (NFSSTA_WAITAUTH | NFSSTA_DISMNT)) == 0) {
84 if (nmp->nm_state & NFSSTA_HASAUTH)
86 if ((flag & NFSSVC_AUTHINFAIL) == 0) {
87 if (ncd->ncd_authlen <= nmp->nm_authlen &&
88 ncd->ncd_verflen <= nmp->nm_verflen &&
89 !copyin(ncd->ncd_authstr,nmp->nm_authstr,ncd->ncd_authlen)&&
90 !copyin(ncd->ncd_verfstr,nmp->nm_verfstr,ncd->ncd_verflen)){
91 nmp->nm_authtype = ncd->ncd_authtype;
92 nmp->nm_authlen = ncd->ncd_authlen;
93 nmp->nm_verflen = ncd->ncd_verflen;
95 nmp->nm_key = ncd->ncd_key;
98 nmp->nm_state |= NFSSTA_AUTHERR;
100 nmp->nm_state |= NFSSTA_AUTHERR;
101 nmp->nm_state |= NFSSTA_HASAUTH;
102 wakeup((caddr_t)&nmp->nm_authlen);
104 nmp->nm_state |= NFSSTA_WAITAUTH;
107 * Loop every second updating queue until there is a termination sig.
109 while ((nmp->nm_state & NFSSTA_DISMNT) == 0) {
111 * Get an authorization string, if required.
113 if ((nmp->nm_state & (NFSSTA_WAITAUTH | NFSSTA_DISMNT | NFSSTA_HASAUTH)) == 0) {
114 ncd->ncd_authuid = nmp->nm_authuid;
115 if (copyout((caddr_t)ncd, argp, sizeof (struct nfsd_cargs)))
116 nmp->nm_state |= NFSSTA_WAITAUTH;
122 * Wait a bit (no pun) and do it again.
124 if ((nmp->nm_state & NFSSTA_DISMNT) == 0 &&
125 (nmp->nm_state & (NFSSTA_WAITAUTH | NFSSTA_HASAUTH))) {
126 error = tsleep((caddr_t)&nmp->nm_authstr, PCATCH,
127 "nqnfstimr", hz / 3);
128 if (error == EINTR || error == ERESTART)
129 (void) dounmount(nmp->nm_mountp, 0);
134 * Finally, we can free up the mount structure.
136 TAILQ_FOREACH_MUTABLE(nuidp, &nmp->nm_uidlruhead, nu_lru, nnuidp) {
137 LIST_REMOVE(nuidp, nu_hash);
138 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru);
139 kfree((caddr_t)nuidp, M_NFSUID);
142 if (error == EWOULDBLOCK)
147 #endif /* NFS_NOSERVER */