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. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)nfs_nqlease.c 8.9 (Berkeley) 5/20/95
37 * $FreeBSD: src/sys/nfs/nfs_nqlease.c,v 1.50 2000/02/13 03:32:05 peter Exp $
38 * $DragonFly: src/sys/vfs/nfs/nfs_kerb.c,v 1.3 2006/09/05 00:55:50 dillon Exp $
41 #include <sys/param.h>
42 #include <sys/vnode.h>
43 #include <sys/malloc.h>
44 #include <sys/mount.h>
45 #include <sys/kernel.h>
47 #include <sys/systm.h>
49 #include <sys/socket.h>
50 #include <sys/socketvar.h>
51 #include <sys/protosw.h>
53 #include <vm/vm_zone.h>
55 #include <netinet/in.h>
59 #include "nfsm_subs.h"
64 #include <sys/thread2.h>
72 * Nqnfs client helper daemon. Runs once a second to expire leases.
73 * It also get authorization strings for "kerb" mounts.
74 * It must start at the beginning of the list again after any potential
75 * "sleep" since nfs_reclaim() called from vclean() can pull a node off
76 * the list asynchronously.
79 nfs_clientd(struct nfsmount
*nmp
, struct ucred
*cred
, struct nfsd_cargs
*ncd
,
80 int flag
, caddr_t argp
, struct thread
*td
)
82 struct nfsuid
*nuidp
, *nnuidp
;
86 * If an authorization string is being passed in, get it.
88 if ((flag
& NFSSVC_GOTAUTH
) &&
89 (nmp
->nm_state
& (NFSSTA_WAITAUTH
| NFSSTA_DISMNT
)) == 0) {
90 if (nmp
->nm_state
& NFSSTA_HASAUTH
)
92 if ((flag
& NFSSVC_AUTHINFAIL
) == 0) {
93 if (ncd
->ncd_authlen
<= nmp
->nm_authlen
&&
94 ncd
->ncd_verflen
<= nmp
->nm_verflen
&&
95 !copyin(ncd
->ncd_authstr
,nmp
->nm_authstr
,ncd
->ncd_authlen
)&&
96 !copyin(ncd
->ncd_verfstr
,nmp
->nm_verfstr
,ncd
->ncd_verflen
)){
97 nmp
->nm_authtype
= ncd
->ncd_authtype
;
98 nmp
->nm_authlen
= ncd
->ncd_authlen
;
99 nmp
->nm_verflen
= ncd
->ncd_verflen
;
101 nmp
->nm_key
= ncd
->ncd_key
;
104 nmp
->nm_state
|= NFSSTA_AUTHERR
;
106 nmp
->nm_state
|= NFSSTA_AUTHERR
;
107 nmp
->nm_state
|= NFSSTA_HASAUTH
;
108 wakeup((caddr_t
)&nmp
->nm_authlen
);
110 nmp
->nm_state
|= NFSSTA_WAITAUTH
;
113 * Loop every second updating queue until there is a termination sig.
115 while ((nmp
->nm_state
& NFSSTA_DISMNT
) == 0) {
117 * Get an authorization string, if required.
119 if ((nmp
->nm_state
& (NFSSTA_WAITAUTH
| NFSSTA_DISMNT
| NFSSTA_HASAUTH
)) == 0) {
120 ncd
->ncd_authuid
= nmp
->nm_authuid
;
121 if (copyout((caddr_t
)ncd
, argp
, sizeof (struct nfsd_cargs
)))
122 nmp
->nm_state
|= NFSSTA_WAITAUTH
;
128 * Wait a bit (no pun) and do it again.
130 if ((nmp
->nm_state
& NFSSTA_DISMNT
) == 0 &&
131 (nmp
->nm_state
& (NFSSTA_WAITAUTH
| NFSSTA_HASAUTH
))) {
132 error
= tsleep((caddr_t
)&nmp
->nm_authstr
, PCATCH
,
133 "nqnfstimr", hz
/ 3);
134 if (error
== EINTR
|| error
== ERESTART
)
135 (void) dounmount(nmp
->nm_mountp
, 0);
140 * Finally, we can free up the mount structure.
142 TAILQ_FOREACH_MUTABLE(nuidp
, &nmp
->nm_uidlruhead
, nu_lru
, nnuidp
) {
143 LIST_REMOVE(nuidp
, nu_hash
);
144 TAILQ_REMOVE(&nmp
->nm_uidlruhead
, nuidp
, nu_lru
);
145 kfree((caddr_t
)nuidp
, M_NFSUID
);
148 if (error
== EWOULDBLOCK
)
153 #endif /* NFS_NOSERVER */