nfsargs.h revision 24330
1/*
2 * Copyright (c) 1989, 1993, 1995
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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.
23 *
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
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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
34 * SUCH DAMAGE.
35 *
36 *	@(#)nfs.h	8.4 (Berkeley) 5/1/95
37 * $Id: nfs.h,v 1.22 1997/02/22 09:42:34 peter Exp $
38 */
39
40#ifndef _NFS_NFS_H_
41#define _NFS_NFS_H_
42
43/*
44 * Tunable constants for nfs
45 */
46
47#ifdef KERNEL
48
49#define	NFS_MAXIOVEC	34
50#define NFS_TICKINTVL	5		/* Desired time for a tick (msec) */
51#define NFS_HZ		(hz / nfs_ticks) /* Ticks/sec */
52#define	NFS_TIMEO	(1 * NFS_HZ)	/* Default timeout = 1 second */
53#define	NFS_MINTIMEO	(1 * NFS_HZ)	/* Min timeout to use */
54#define	NFS_MAXTIMEO	(60 * NFS_HZ)	/* Max timeout to backoff to */
55#define	NFS_MINIDEMTIMEO (5 * NFS_HZ)	/* Min timeout for non-idempotent ops*/
56#define	NFS_MAXREXMIT	100		/* Stop counting after this many */
57#define	NFS_MAXWINDOW	1024		/* Max number of outstanding requests */
58#define	NFS_RETRANS	10		/* Num of retrans for soft mounts */
59#define	NFS_MAXGRPS	16		/* Max. size of groups list */
60#ifndef NFS_MINATTRTIMO
61#define	NFS_MINATTRTIMO 5		/* Attribute cache timeout in sec */
62#endif
63#ifndef NFS_MAXATTRTIMO
64#define	NFS_MAXATTRTIMO 60
65#endif
66#define	NFS_WSIZE	8192		/* Def. write data size <= 8192 */
67#define	NFS_RSIZE	8192		/* Def. read data size <= 8192 */
68#define NFS_READDIRSIZE	8192		/* Def. readdir size */
69#define	NFS_DEFRAHEAD	1		/* Def. read ahead # blocks */
70#define	NFS_MAXRAHEAD	4		/* Max. read ahead # blocks */
71#define	NFS_MAXUIDHASH	64		/* Max. # of hashed uid entries/mp */
72#define	NFS_MAXASYNCDAEMON 	20	/* Max. number async_daemons runable */
73#define NFS_MAXGATHERDELAY	100	/* Max. write gather delay (msec) */
74#ifndef NFS_GATHERDELAY
75#define NFS_GATHERDELAY		10	/* Default write gather delay (msec) */
76#endif
77#define	NFS_DIRBLKSIZ	4096		/* Must be a multiple of DIRBLKSIZ */
78
79/*
80 * Oddballs
81 */
82#define	NMOD(a)		((a) % nfs_asyncdaemons)
83#define NFS_CMPFH(n, f, s) \
84	((n)->n_fhsize == (s) && !bcmp((caddr_t)(n)->n_fhp, (caddr_t)(f), (s)))
85#define NFS_ISV3(v)	(VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3)
86#define NFS_SRVMAXDATA(n) \
87		(((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \
88		 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA)
89
90/*
91 * XXX
92 * The B_INVAFTERWRITE flag should be set to whatever is required by the
93 * buffer cache code to say "Invalidate the block after it is written back".
94 */
95#ifdef __FreeBSD__
96#define	B_INVAFTERWRITE	B_NOCACHE
97#else
98#define	B_INVAFTERWRITE	B_INVAL
99#endif
100
101/*
102 * The IO_METASYNC flag should be implemented for local file systems.
103 * (Until then, it is nothin at all.)
104 */
105#ifndef IO_METASYNC
106#define IO_METASYNC	0
107#endif
108
109/*
110 * Set the attribute timeout based on how recently the file has been modified.
111 */
112#define	NFS_ATTRTIMEO(np) \
113	((((np)->n_flag & NMODIFIED) || \
114	 (time.tv_sec - (np)->n_mtime) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \
115	 ((time.tv_sec - (np)->n_mtime) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \
116	  (time.tv_sec - (np)->n_mtime) / 10))
117
118/*
119 * Expected allocation sizes for major data structures. If the actual size
120 * of the structure exceeds these sizes, then malloc() will be allocating
121 * almost twice the memory required. This is used in nfs_init() to warn
122 * the sysadmin that the size of a structure should be reduced.
123 * (These sizes are always a power of 2. If the kernel malloc() changes
124 *  to one that does not allocate space in powers of 2 size, then this all
125 *  becomes bunk!)
126 */
127#define NFS_NODEALLOC	256
128#define NFS_MNTALLOC	512
129#define NFS_SVCALLOC	256
130#define NFS_UIDALLOC	128
131
132#endif /* KERNEL */
133
134/*
135 * NFS mount option flags
136 */
137#define	NFSMNT_SOFT		0x00000001  /* soft mount (hard is default) */
138#define	NFSMNT_WSIZE		0x00000002  /* set write size */
139#define	NFSMNT_RSIZE		0x00000004  /* set read size */
140#define	NFSMNT_TIMEO		0x00000008  /* set initial timeout */
141#define	NFSMNT_RETRANS		0x00000010  /* set number of request retries */
142#define	NFSMNT_MAXGRPS		0x00000020  /* set maximum grouplist size */
143#define	NFSMNT_INT		0x00000040  /* allow interrupts on hard mount */
144#define	NFSMNT_NOCONN		0x00000080  /* Don't Connect the socket */
145#define	NFSMNT_NQNFS		0x00000100  /* Use Nqnfs protocol */
146#define	NFSMNT_NFSV3		0x00000200  /* Use NFS Version 3 protocol */
147#define	NFSMNT_KERB		0x00000400  /* Use Kerberos authentication */
148#define	NFSMNT_DUMBTIMR		0x00000800  /* Don't estimate rtt dynamically */
149#define	NFSMNT_LEASETERM	0x00001000  /* set lease term (nqnfs) */
150#define	NFSMNT_READAHEAD	0x00002000  /* set read ahead */
151#define	NFSMNT_DEADTHRESH	0x00004000  /* set dead server retry thresh */
152#define	NFSMNT_RESVPORT		0x00008000  /* Allocate a reserved port */
153#define	NFSMNT_RDIRPLUS		0x00010000  /* Use Readdirplus for V3 */
154#define	NFSMNT_READDIRSIZE	0x00020000  /* Set readdir size */
155#define	NFSMNT_INTERNAL		0xfffc0000  /* Bits set internally */
156#define NFSMNT_HASWRITEVERF	0x00040000  /* Has write verifier for V3 */
157#define NFSMNT_GOTPATHCONF	0x00080000  /* Got the V3 pathconf info */
158#define NFSMNT_GOTFSINFO	0x00100000  /* Got the V3 fsinfo */
159#define	NFSMNT_MNTD		0x00200000  /* Mnt server for mnt point */
160#define	NFSMNT_DISMINPROG	0x00400000  /* Dismount in progress */
161#define	NFSMNT_DISMNT		0x00800000  /* Dismounted */
162#define	NFSMNT_SNDLOCK		0x01000000  /* Send socket lock */
163#define	NFSMNT_WANTSND		0x02000000  /* Want above */
164#define	NFSMNT_RCVLOCK		0x04000000  /* Rcv socket lock */
165#define	NFSMNT_WANTRCV		0x08000000  /* Want above */
166#define	NFSMNT_WAITAUTH		0x10000000  /* Wait for authentication */
167#define	NFSMNT_HASAUTH		0x20000000  /* Has authenticator */
168#define	NFSMNT_WANTAUTH		0x40000000  /* Wants an authenticator */
169#define	NFSMNT_AUTHERR		0x80000000  /* Authentication error */
170
171/*
172 * Arguments to mount NFS
173 */
174#define NFS_ARGSVERSION	3		/* change when nfs_args changes */
175struct nfs_args {
176	int		version;	/* args structure version number */
177	struct sockaddr	*addr;		/* file server address */
178	int		addrlen;	/* length of address */
179	int		sotype;		/* Socket type */
180	int		proto;		/* and Protocol */
181	u_char		*fh;		/* File handle to be mounted */
182	int		fhsize;		/* Size, in bytes, of fh */
183	int		flags;		/* flags */
184	int		wsize;		/* write size in bytes */
185	int		rsize;		/* read size in bytes */
186	int		readdirsize;	/* readdir size in bytes */
187	int		timeo;		/* initial timeout in .1 secs */
188	int		retrans;	/* times to retry send */
189	int		maxgrouplist;	/* Max. size of group list */
190	int		readahead;	/* # of blocks to readahead */
191	int		leaseterm;	/* Term (sec) of lease */
192	int		deadthresh;	/* Retrans threshold */
193	char		*hostname;	/* server's name */
194};
195
196/*
197 * NFS mount option flags
198 */
199#define	NFSMNT_SOFT		0x00000001  /* soft mount (hard is default) */
200#define	NFSMNT_WSIZE		0x00000002  /* set write size */
201#define	NFSMNT_RSIZE		0x00000004  /* set read size */
202#define	NFSMNT_TIMEO		0x00000008  /* set initial timeout */
203#define	NFSMNT_RETRANS		0x00000010  /* set number of request retries */
204#define	NFSMNT_MAXGRPS		0x00000020  /* set maximum grouplist size */
205#define	NFSMNT_INT		0x00000040  /* allow interrupts on hard mount */
206#define	NFSMNT_NOCONN		0x00000080  /* Don't Connect the socket */
207#define	NFSMNT_NQNFS		0x00000100  /* Use Nqnfs protocol */
208#define	NFSMNT_NFSV3		0x00000200  /* Use NFS Version 3 protocol */
209#define	NFSMNT_KERB		0x00000400  /* Use Kerberos authentication */
210#define	NFSMNT_DUMBTIMR		0x00000800  /* Don't estimate rtt dynamically */
211#define	NFSMNT_LEASETERM	0x00001000  /* set lease term (nqnfs) */
212#define	NFSMNT_READAHEAD	0x00002000  /* set read ahead */
213#define	NFSMNT_DEADTHRESH	0x00004000  /* set dead server retry thresh */
214#define	NFSMNT_RESVPORT		0x00008000  /* Allocate a reserved port */
215#define	NFSMNT_RDIRPLUS		0x00010000  /* Use Readdirplus for V3 */
216#define	NFSMNT_READDIRSIZE	0x00020000  /* Set readdir size */
217#define	NFSMNT_INTERNAL		0xfffc0000  /* Bits set internally */
218#define NFSMNT_HASWRITEVERF	0x00040000  /* Has write verifier for V3 */
219#define NFSMNT_GOTPATHCONF	0x00080000  /* Got the V3 pathconf info */
220#define NFSMNT_GOTFSINFO	0x00100000  /* Got the V3 fsinfo */
221#define	NFSMNT_MNTD		0x00200000  /* Mnt server for mnt point */
222#define	NFSMNT_DISMINPROG	0x00400000  /* Dismount in progress */
223#define	NFSMNT_DISMNT		0x00800000  /* Dismounted */
224#define	NFSMNT_SNDLOCK		0x01000000  /* Send socket lock */
225#define	NFSMNT_WANTSND		0x02000000  /* Want above */
226#define	NFSMNT_RCVLOCK		0x04000000  /* Rcv socket lock */
227#define	NFSMNT_WANTRCV		0x08000000  /* Want above */
228#define	NFSMNT_WAITAUTH		0x10000000  /* Wait for authentication */
229#define	NFSMNT_HASAUTH		0x20000000  /* Has authenticator */
230#define	NFSMNT_WANTAUTH		0x40000000  /* Wants an authenticator */
231#define	NFSMNT_AUTHERR		0x80000000  /* Authentication error */
232
233/*
234 * Structures for the nfssvc(2) syscall. Not that anyone but nfsd and mount_nfs
235 * should ever try and use it.
236 */
237struct nfsd_args {
238	int	sock;		/* Socket to serve */
239	caddr_t	name;		/* Client addr for connection based sockets */
240	int	namelen;	/* Length of name */
241};
242
243struct nfsd_srvargs {
244	struct nfsd	*nsd_nfsd;	/* Pointer to in kernel nfsd struct */
245	uid_t		nsd_uid;	/* Effective uid mapped to cred */
246	u_long		nsd_haddr;	/* Ip address of client */
247	struct ucred	nsd_cr;		/* Cred. uid maps to */
248	int		nsd_authlen;	/* Length of auth string (ret) */
249	u_char		*nsd_authstr;	/* Auth string (ret) */
250	int		nsd_verflen;	/* and the verfier */
251	u_char		*nsd_verfstr;
252	struct timeval	nsd_timestamp;	/* timestamp from verifier */
253	u_long		nsd_ttl;	/* credential ttl (sec) */
254	NFSKERBKEY_T	nsd_key;	/* Session key */
255};
256
257struct nfsd_cargs {
258	char		*ncd_dirp;	/* Mount dir path */
259	uid_t		ncd_authuid;	/* Effective uid */
260	int		ncd_authtype;	/* Type of authenticator */
261	int		ncd_authlen;	/* Length of authenticator string */
262	u_char		*ncd_authstr;	/* Authenticator string */
263	int		ncd_verflen;	/* and the verifier */
264	u_char		*ncd_verfstr;
265	NFSKERBKEY_T	ncd_key;	/* Session key */
266};
267
268/*
269 * XXX to allow amd to include nfs.h without nfsproto.h
270 */
271#ifdef NFS_NPROCS
272/*
273 * Stats structure
274 */
275struct nfsstats {
276	int	attrcache_hits;
277	int	attrcache_misses;
278	int	lookupcache_hits;
279	int	lookupcache_misses;
280	int	direofcache_hits;
281	int	direofcache_misses;
282	int	biocache_reads;
283	int	read_bios;
284	int	read_physios;
285	int	biocache_writes;
286	int	write_bios;
287	int	write_physios;
288	int	biocache_readlinks;
289	int	readlink_bios;
290	int	biocache_readdirs;
291	int	readdir_bios;
292	int	rpccnt[NFS_NPROCS];
293	int	rpcretries;
294	int	srvrpccnt[NFS_NPROCS];
295	int	srvrpc_errs;
296	int	srv_errs;
297	int	rpcrequests;
298	int	rpctimeouts;
299	int	rpcunexpected;
300	int	rpcinvalid;
301	int	srvcache_inproghits;
302	int	srvcache_idemdonehits;
303	int	srvcache_nonidemdonehits;
304	int	srvcache_misses;
305	int	srvnqnfs_leases;
306	int	srvnqnfs_maxleases;
307	int	srvnqnfs_getleases;
308	int	srvvop_writes;
309};
310#endif
311
312/*
313 * Flags for nfssvc() system call.
314 */
315#define	NFSSVC_BIOD	0x002
316#define	NFSSVC_NFSD	0x004
317#define	NFSSVC_ADDSOCK	0x008
318#define	NFSSVC_AUTHIN	0x010
319#define	NFSSVC_GOTAUTH	0x040
320#define	NFSSVC_AUTHINFAIL 0x080
321#define	NFSSVC_MNTD	0x100
322
323/*
324 * fs.nfs sysctl(3) identifiers
325 */
326#define NFS_NFSSTATS	1		/* struct: struct nfsstats */
327#define NFS_NFSPRIVPORT	2		/* int: prohibit nfs to resvports */
328
329#define FS_NFS_NAMES { \
330		       { 0, 0 }, \
331		       { "nfsstats", CTLTYPE_STRUCT }, \
332		       { "nfsprivport", CTLTYPE_INT }, \
333}
334
335/*
336 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts.
337 * What should be in this set is open to debate, but I believe that since
338 * I/O system calls on ufs are never interrupted by signals the set should
339 * be minimal. My reasoning is that many current programs that use signals
340 * such as SIGALRM will not expect file I/O system calls to be interrupted
341 * by them and break.
342 */
343#ifdef KERNEL
344
345struct uio; struct buf; struct vattr; struct nameidata;	/* XXX */
346
347#define	NFSINT_SIGMASK	(sigmask(SIGINT)|sigmask(SIGTERM)|sigmask(SIGKILL)| \
348			 sigmask(SIGHUP)|sigmask(SIGQUIT))
349
350/*
351 * Socket errors ignored for connectionless sockets??
352 * For now, ignore them all
353 */
354#define	NFSIGNORE_SOERROR(s, e) \
355		((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \
356		((s) & PR_CONNREQUIRED) == 0)
357
358/*
359 * Nfs outstanding request list element
360 */
361struct nfsreq {
362	TAILQ_ENTRY(nfsreq) r_chain;
363	struct mbuf	*r_mreq;
364	struct mbuf	*r_mrep;
365	struct mbuf	*r_md;
366	caddr_t		r_dpos;
367	struct nfsmount *r_nmp;
368	struct vnode	*r_vp;
369	u_long		r_xid;
370	int		r_flags;	/* flags on request, see below */
371	int		r_retry;	/* max retransmission count */
372	int		r_rexmit;	/* current retrans count */
373	int		r_timer;	/* tick counter on reply */
374	int		r_procnum;	/* NFS procedure number */
375	int		r_rtt;		/* RTT for rpc */
376	struct proc	*r_procp;	/* Proc that did I/O system call */
377};
378
379/*
380 * Queue head for nfsreq's
381 */
382extern TAILQ_HEAD(nfs_reqq, nfsreq) nfs_reqq;
383
384/* Flag values for r_flags */
385#define R_TIMING	0x01		/* timing request (in mntp) */
386#define R_SENT		0x02		/* request has been sent */
387#define	R_SOFTTERM	0x04		/* soft mnt, too many retries */
388#define	R_INTR		0x08		/* intr mnt, signal pending */
389#define	R_SOCKERR	0x10		/* Fatal error on socket */
390#define	R_TPRINTFMSG	0x20		/* Did a tprintf msg. */
391#define	R_MUSTRESEND	0x40		/* Must resend request */
392#define	R_GETONEREP	0x80		/* Probe for one reply only */
393
394/*
395 * A list of nfssvc_sock structures is maintained with all the sockets
396 * that require service by the nfsd.
397 * The nfsuid structs hang off of the nfssvc_sock structs in both lru
398 * and uid hash lists.
399 */
400#ifndef NFS_UIDHASHSIZ
401#define	NFS_UIDHASHSIZ	29	/* Tune the size of nfssvc_sock with this */
402#endif
403#define	NUIDHASH(sock, uid) \
404	(&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ])
405#ifndef NFS_WDELAYHASHSIZ
406#define	NFS_WDELAYHASHSIZ 16	/* and with this */
407#endif
408#define	NWDELAYHASH(sock, f) \
409	(&(sock)->ns_wdelayhashtbl[(*((u_long *)(f))) % NFS_WDELAYHASHSIZ])
410#ifndef NFS_MUIDHASHSIZ
411#define NFS_MUIDHASHSIZ	63	/* Tune the size of nfsmount with this */
412#endif
413#define	NMUIDHASH(nmp, uid) \
414	(&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ])
415#define	NFSNOHASH(fhsum) \
416	(&nfsnodehashtbl[(fhsum) & nfsnodehash])
417
418/*
419 * Network address hash list element
420 */
421union nethostaddr {
422	u_long had_inetaddr;
423	struct mbuf *had_nam;
424};
425
426struct nfsuid {
427	TAILQ_ENTRY(nfsuid) nu_lru;	/* LRU chain */
428	LIST_ENTRY(nfsuid) nu_hash;	/* Hash list */
429	int		nu_flag;	/* Flags */
430	union nethostaddr nu_haddr;	/* Host addr. for dgram sockets */
431	struct ucred	nu_cr;		/* Cred uid mapped to */
432	int		nu_expire;	/* Expiry time (sec) */
433	struct timeval	nu_timestamp;	/* Kerb. timestamp */
434	u_long		nu_nickname;	/* Nickname on server */
435	NFSKERBKEY_T	nu_key;		/* and session key */
436};
437
438#define	nu_inetaddr	nu_haddr.had_inetaddr
439#define	nu_nam		nu_haddr.had_nam
440/* Bits for nu_flag */
441#define	NU_INETADDR	0x1
442#define NU_NAM		0x2
443#define NU_NETFAM(u)	(((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_ISO)
444
445struct nfssvc_sock {
446	TAILQ_ENTRY(nfssvc_sock) ns_chain;	/* List of all nfssvc_sock's */
447	TAILQ_HEAD(, nfsuid) ns_uidlruhead;
448	struct file	*ns_fp;
449	struct socket	*ns_so;
450	struct mbuf	*ns_nam;
451	struct mbuf	*ns_raw;
452	struct mbuf	*ns_rawend;
453	struct mbuf	*ns_rec;
454	struct mbuf	*ns_recend;
455	struct mbuf	*ns_frag;
456	int		ns_flag;
457	int		ns_solock;
458	int		ns_cc;
459	int		ns_reclen;
460	int		ns_numuids;
461	u_long		ns_sref;
462	LIST_HEAD(, nfsrv_descript) ns_tq;	/* Write gather lists */
463	LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ];
464	LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ];
465};
466
467/* Bits for "ns_flag" */
468#define	SLP_VALID	0x01
469#define	SLP_DOREC	0x02
470#define	SLP_NEEDQ	0x04
471#define	SLP_DISCONN	0x08
472#define	SLP_GETSTREAM	0x10
473#define	SLP_LASTFRAG	0x20
474#define SLP_ALLFLAGS	0xff
475
476extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead;
477extern int nfssvc_sockhead_flag;
478#define	SLP_INIT	0x01
479#define	SLP_WANTINIT	0x02
480
481/*
482 * One of these structures is allocated for each nfsd.
483 */
484struct nfsd {
485	TAILQ_ENTRY(nfsd) nfsd_chain;	/* List of all nfsd's */
486	int		nfsd_flag;	/* NFSD_ flags */
487	struct nfssvc_sock *nfsd_slp;	/* Current socket */
488	int		nfsd_authlen;	/* Authenticator len */
489	u_char		nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */
490	int		nfsd_verflen;	/* and the Verifier */
491	u_char		nfsd_verfstr[RPCVERF_MAXSIZ];
492	struct proc	*nfsd_procp;	/* Proc ptr */
493	struct nfsrv_descript *nfsd_nd;	/* Associated nfsrv_descript */
494};
495
496/* Bits for "nfsd_flag" */
497#define	NFSD_WAITING	0x01
498#define	NFSD_REQINPROG	0x02
499#define	NFSD_NEEDAUTH	0x04
500#define	NFSD_AUTHFAIL	0x08
501
502/*
503 * This structure is used by the server for describing each request.
504 * Some fields are used only when write request gathering is performed.
505 */
506struct nfsrv_descript {
507	u_quad_t		nd_time;	/* Write deadline (usec) */
508	off_t			nd_off;		/* Start byte offset */
509	off_t			nd_eoff;	/* and end byte offset */
510	LIST_ENTRY(nfsrv_descript) nd_hash;	/* Hash list */
511	LIST_ENTRY(nfsrv_descript) nd_tq;		/* and timer list */
512	LIST_HEAD(,nfsrv_descript) nd_coalesce;	/* coalesced writes */
513	struct mbuf		*nd_mrep;	/* Request mbuf list */
514	struct mbuf		*nd_md;		/* Current dissect mbuf */
515	struct mbuf		*nd_mreq;	/* Reply mbuf list */
516	struct mbuf		*nd_nam;	/* and socket addr */
517	struct mbuf		*nd_nam2;	/* return socket addr */
518	caddr_t			nd_dpos;	/* Current dissect pos */
519	int			nd_procnum;	/* RPC # */
520	int			nd_stable;	/* storage type */
521	int			nd_flag;	/* nd_flag */
522	int			nd_len;		/* Length of this write */
523	int			nd_repstat;	/* Reply status */
524	u_long			nd_retxid;	/* Reply xid */
525	u_long			nd_duration;	/* Lease duration */
526	struct timeval		nd_starttime;	/* Time RPC initiated */
527	fhandle_t		nd_fh;		/* File handle */
528	struct ucred		nd_cr;		/* Credentials */
529};
530
531/* Bits for "nd_flag" */
532#define	ND_READ		LEASE_READ
533#define ND_WRITE	LEASE_WRITE
534#define ND_CHECK	0x04
535#define ND_LEASE	(ND_READ | ND_WRITE | ND_CHECK)
536#define ND_NFSV3	0x08
537#define ND_NQNFS	0x10
538#define ND_KERBNICK	0x20
539#define ND_KERBFULL	0x40
540#define ND_KERBAUTH	(ND_KERBNICK | ND_KERBFULL)
541
542extern TAILQ_HEAD(nfsd_head, nfsd) nfsd_head;
543extern int nfsd_head_flag;
544#define	NFSD_CHECKSLP	0x01
545
546/*
547 * These macros compare nfsrv_descript structures.
548 */
549#define NFSW_CONTIG(o, n) \
550		((o)->nd_eoff >= (n)->nd_off && \
551		 !bcmp((caddr_t)&(o)->nd_fh, (caddr_t)&(n)->nd_fh, NFSX_V3FH))
552
553#define NFSW_SAMECRED(o, n) \
554	(((o)->nd_flag & ND_KERBAUTH) == ((n)->nd_flag & ND_KERBAUTH) && \
555 	 !bcmp((caddr_t)&(o)->nd_cr, (caddr_t)&(n)->nd_cr, \
556		sizeof (struct ucred)))
557
558
559int	nfs_init __P((struct vfsconf *vfsp));
560int	nfs_reply __P((struct nfsreq *));
561int	nfs_getreq __P((struct nfsrv_descript *,struct nfsd *,int));
562int	nfs_send __P((struct socket *,struct mbuf *,struct mbuf *,struct nfsreq *));
563int	nfs_rephead __P((int,struct nfsrv_descript *,struct nfssvc_sock *,int,int,u_quad_t *,struct mbuf **,struct mbuf **,caddr_t *));
564int	nfs_sndlock __P((int *,struct nfsreq *));
565void	nfs_sndunlock __P((int *flagp));
566int	nfs_disct __P((struct mbuf **,caddr_t *,int,int,caddr_t *));
567int	nfs_vinvalbuf __P((struct vnode *,int,struct ucred *,struct proc *,int));
568int	nfs_readrpc __P((struct vnode *,struct uio *,struct ucred *));
569int	nfs_writerpc __P((struct vnode *,struct uio *,struct ucred *,int *,int *));
570int	nfs_readdirrpc __P((register struct vnode *,struct uio *,struct ucred *));
571int	nfs_asyncio __P((struct buf *,struct ucred *));
572int	nfs_doio __P((struct buf *,struct ucred *,struct proc *));
573int	nfs_readlinkrpc __P((struct vnode *,struct uio *,struct ucred *));
574int	nfs_sigintr __P((struct nfsmount *,struct nfsreq *r,struct proc *));
575int	nfs_readdirplusrpc __P((struct vnode *,register struct uio *,struct ucred *));
576int	nfsm_disct __P((struct mbuf **,caddr_t *,int,int,caddr_t *));
577void	nfsm_srvfattr __P((struct nfsrv_descript *,struct vattr *,struct nfs_fattr *));
578void	nfsm_srvwcc __P((struct nfsrv_descript *,int,struct vattr *,int,struct vattr *,struct mbuf **,char **));
579void	nfsm_srvpostopattr __P((struct nfsrv_descript *,int,struct vattr *,struct mbuf **,char **));
580int	netaddr_match __P((int,union nethostaddr *,struct mbuf *));
581int	nfs_request __P((struct vnode *,struct mbuf *,int,struct proc *,struct ucred *,struct mbuf **,struct mbuf **,caddr_t *));
582int	nfs_loadattrcache __P((struct vnode **,struct mbuf **,caddr_t *,struct vattr *));
583int	nfs_namei __P((struct nameidata *,fhandle_t *,int,struct nfssvc_sock *,struct mbuf *,struct mbuf **,caddr_t *,struct vnode **,struct proc *,int));
584void	nfsm_adj __P((struct mbuf *,int,int));
585int	nfsm_mbuftouio __P((struct mbuf **,struct uio *,int,caddr_t *));
586void	nfsrv_initcache __P((void));
587int	nfs_getauth __P((struct nfsmount *,struct nfsreq *,struct ucred *,char **,int *,char *,int *,NFSKERBKEY_T));
588int	nfs_getnickauth __P((struct nfsmount *,struct ucred *,char **,int *,char *,int));
589int	nfs_savenickauth __P((struct nfsmount *,struct ucred *,int,NFSKERBKEY_T,struct mbuf **,char **,struct mbuf *));
590int	nfs_adv __P((struct mbuf **,caddr_t *,int,int));
591void	nfs_nhinit __P((void));
592void	nfs_timer __P((void*));
593u_long nfs_hash __P((nfsfh_t *,int));
594int	nfsrv_dorec __P((struct nfssvc_sock *,struct nfsd *,struct nfsrv_descript **));
595int	nfsrv_getcache __P((struct nfsrv_descript *,struct nfssvc_sock *,struct mbuf **));
596void	nfsrv_updatecache __P((struct nfsrv_descript *,int,struct mbuf *));
597void	nfsrv_cleancache __P((void));
598int	nfs_connect __P((struct nfsmount *,struct nfsreq *));
599void	nfs_disconnect __P((struct nfsmount *));
600int	nfs_getattrcache __P((struct vnode *,struct vattr *));
601int	nfsm_strtmbuf __P((struct mbuf **,char **,char *,long));
602int	nfs_bioread __P((struct vnode *,struct uio *,int,struct ucred *));
603int	nfsm_uiotombuf __P((struct uio *,struct mbuf **,int,caddr_t *));
604void	nfsrv_init __P((int));
605void	nfs_clearcommit __P((struct mount *));
606int	nfsrv_errmap __P((struct nfsrv_descript *, int));
607void	nfsrvw_sort __P((gid_t [],int));
608void	nfsrv_setcred __P((struct ucred *,struct ucred *));
609int	nfs_writebp __P((struct buf *,int));
610int	nfsrv_object_create __P(( struct vnode * ));
611void	nfsrv_wakenfsd __P((struct nfssvc_sock *slp));
612int	nfsrv_writegather __P((struct nfsrv_descript **, struct nfssvc_sock *,
613			       struct proc *, struct mbuf **));
614int	nfs_fsinfo __P((struct nfsmount *, struct vnode *, struct ucred *,
615			struct proc *p));
616
617int	nfsrv3_access __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
618			   struct proc *procp, struct mbuf **mrq));
619int	nfsrv_commit __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
620			  struct proc *procp, struct mbuf **mrq));
621int	nfsrv_create __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
622			  struct proc *procp, struct mbuf **mrq));
623int	nfsrv_fhtovp __P((fhandle_t *,int,struct vnode **,
624			struct ucred *,struct nfssvc_sock *,struct mbuf *,
625			int *,int));
626int	nfsrv_fsinfo __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
627			  struct proc *procp, struct mbuf **mrq));
628int	nfsrv_getattr __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
629			   struct proc *procp, struct mbuf **mrq));
630int	nfsrv_link __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
631			struct proc *procp, struct mbuf **mrq));
632int	nfsrv_lookup __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
633			  struct proc *procp, struct mbuf **mrq));
634int	nfsrv_mkdir __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
635			 struct proc *procp, struct mbuf **mrq));
636int	nfsrv_mknod __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
637			 struct proc *procp, struct mbuf **mrq));
638int	nfsrv_noop __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
639			struct proc *procp, struct mbuf **mrq));
640int	nfsrv_null __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
641			struct proc *procp, struct mbuf **mrq));
642int	nfsrv_pathconf __P((struct nfsrv_descript *nfsd,
643			    struct nfssvc_sock *slp, struct proc *procp,
644			    struct mbuf **mrq));
645int	nfsrv_read __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
646			struct proc *procp, struct mbuf **mrq));
647int	nfsrv_readdir __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
648			   struct proc *procp, struct mbuf **mrq));
649int	nfsrv_readdirplus __P((struct nfsrv_descript *nfsd,
650			       struct nfssvc_sock *slp, struct proc *procp,
651			       struct mbuf **mrq));
652int	nfsrv_readlink __P((struct nfsrv_descript *nfsd,
653			    struct nfssvc_sock *slp, struct proc *procp,
654			    struct mbuf **mrq));
655int	nfsrv_remove __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
656			  struct proc *procp, struct mbuf **mrq));
657int	nfsrv_rename __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
658			  struct proc *procp, struct mbuf **mrq));
659int	nfsrv_rmdir __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
660			 struct proc *procp, struct mbuf **mrq));
661int	nfsrv_setattr __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
662			   struct proc *procp, struct mbuf **mrq));
663int	nfsrv_statfs __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
664			  struct proc *procp, struct mbuf **mrq));
665int	nfsrv_symlink __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
666			   struct proc *procp, struct mbuf **mrq));
667int	nfsrv_write __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
668			 struct proc *procp, struct mbuf **mrq));
669void	nfsrv_rcv __P((struct socket *so, caddr_t arg, int waitflag));
670void	nfsrv_slpderef __P((struct nfssvc_sock *slp));
671#endif	/* KERNEL */
672
673#endif
674