summaryrefslogtreecommitdiffstats
path: root/sys/nfsserver/nfsrvstats.h
blob: 5c5a8237f13f1a8db69a0e72d582eaf52f92b94e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
/*
 * Copyright (c) 1989, 1993, 1995
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Rick Macklem at The University of Guelph.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)nfs.h	8.4 (Berkeley) 5/1/95
 * $FreeBSD$
 */

#ifndef _NFS_NFS_H_
#define _NFS_NFS_H_

#ifdef _KERNEL
#include "opt_nfs.h"
#endif

/*
 * Tunable constants for nfs
 */

#define	NFS_MAXIOVEC	34
#define NFS_TICKINTVL	5		/* Desired time for a tick (msec) */
#define NFS_HZ		(hz / nfs_ticks) /* Ticks/sec */
#define	NFS_TIMEO	(1 * NFS_HZ)	/* Default timeout = 1 second */
#define	NFS_MINTIMEO	(1 * NFS_HZ)	/* Min timeout to use */
#define	NFS_MAXTIMEO	(60 * NFS_HZ)	/* Max timeout to backoff to */
#define	NFS_MINIDEMTIMEO (5 * NFS_HZ)	/* Min timeout for non-idempotent ops*/
#define	NFS_MAXREXMIT	100		/* Stop counting after this many */
#define	NFS_MAXWINDOW	1024		/* Max number of outstanding requests */
#define	NFS_RETRANS	10		/* Num of retrans for soft mounts */
#define	NFS_MAXGRPS	16		/* Max. size of groups list */
#ifndef NFS_MINATTRTIMO
#define	NFS_MINATTRTIMO 3		/* VREG attrib cache timeout in sec */
#endif
#ifndef NFS_MAXATTRTIMO
#define	NFS_MAXATTRTIMO 60
#endif
#ifndef NFS_MINDIRATTRTIMO
#define	NFS_MINDIRATTRTIMO 30		/* VDIR attrib cache timeout in sec */
#endif
#ifndef NFS_MAXDIRATTRTIMO
#define	NFS_MAXDIRATTRTIMO 60
#endif
#define	NFS_WSIZE	8192		/* Def. write data size <= 8192 */
#define	NFS_RSIZE	8192		/* Def. read data size <= 8192 */
#define NFS_READDIRSIZE	8192		/* Def. readdir size */
#define	NFS_DEFRAHEAD	1		/* Def. read ahead # blocks */
#define	NFS_MAXRAHEAD	4		/* Max. read ahead # blocks */
#define	NFS_MAXUIDHASH	64		/* Max. # of hashed uid entries/mp */
#define	NFS_MAXASYNCDAEMON 	20	/* Max. number async_daemons runnable */
#define NFS_MAXGATHERDELAY	100	/* Max. write gather delay (msec) */
#ifndef NFS_GATHERDELAY
#define NFS_GATHERDELAY		10	/* Default write gather delay (msec) */
#endif
#define	NFS_DIRBLKSIZ	4096		/* Must be a multiple of DIRBLKSIZ */
#ifdef _KERNEL
#define	DIRBLKSIZ	512		/* XXX we used to use ufs's DIRBLKSIZ */
#endif

/*
 * Oddballs
 */
#define	NMOD(a)		((a) % nfs_asyncdaemons)
#define NFS_CMPFH(n, f, s) \
	((n)->n_fhsize == (s) && !bcmp((caddr_t)(n)->n_fhp, (caddr_t)(f), (s)))
#define NFS_ISV3(v)	(VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3)
#define NFS_SRVMAXDATA(n) \
		(((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \
		 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA)

/*
 * XXX
 * The B_INVAFTERWRITE flag should be set to whatever is required by the
 * buffer cache code to say "Invalidate the block after it is written back".
 */
#define	B_INVAFTERWRITE	B_NOCACHE

/*
 * The IO_METASYNC flag should be implemented for local file systems.
 * (Until then, it is nothin at all.)
 */
#ifndef IO_METASYNC
#define IO_METASYNC	0
#endif

/*
 * Arguments to mount NFS
 */
#define NFS_ARGSVERSION	3		/* change when nfs_args changes */
struct nfs_args {
	int		version;	/* args structure version number */
	struct sockaddr	*addr;		/* file server address */
	int		addrlen;	/* length of address */
	int		sotype;		/* Socket type */
	int		proto;		/* and Protocol */
	u_char		*fh;		/* File handle to be mounted */
	int		fhsize;		/* Size, in bytes, of fh */
	int		flags;		/* flags */
	int		wsize;		/* write size in bytes */
	int		rsize;		/* read size in bytes */
	int		readdirsize;	/* readdir size in bytes */
	int		timeo;		/* initial timeout in .1 secs */
	int		retrans;	/* times to retry send */
	int		maxgrouplist;	/* Max. size of group list */
	int		readahead;	/* # of blocks to readahead */
	int		leaseterm;	/* Term (sec) of lease */
	int		deadthresh;	/* Retrans threshold */
	char		*hostname;	/* server's name */
	int		acregmin;	/* cache attrs for reg files min time */
	int		acregmax;	/* cache attrs for reg files max time */
	int		acdirmin;	/* cache attrs for dirs min time */
	int		acdirmax;	/* cache attrs for dirs max time */
};

/*
 * NFS mount option flags
 */
#define	NFSMNT_SOFT		0x00000001  /* soft mount (hard is default) */
#define	NFSMNT_WSIZE		0x00000002  /* set write size */
#define	NFSMNT_RSIZE		0x00000004  /* set read size */
#define	NFSMNT_TIMEO		0x00000008  /* set initial timeout */
#define	NFSMNT_RETRANS		0x00000010  /* set number of request retries */
#define	NFSMNT_MAXGRPS		0x00000020  /* set maximum grouplist size */
#define	NFSMNT_INT		0x00000040  /* allow interrupts on hard mount */
#define	NFSMNT_NOCONN		0x00000080  /* Don't Connect the socket */
#define	NFSMNT_NQNFS		0x00000100  /* Use Nqnfs protocol */
#define	NFSMNT_NFSV3		0x00000200  /* Use NFS Version 3 protocol */
#define	NFSMNT_KERB		0x00000400  /* Use Kerberos authentication */
#define	NFSMNT_DUMBTIMR		0x00000800  /* Don't estimate rtt dynamically */
#define	NFSMNT_LEASETERM	0x00001000  /* set lease term (nqnfs) */
#define	NFSMNT_READAHEAD	0x00002000  /* set read ahead */
#define	NFSMNT_DEADTHRESH	0x00004000  /* set dead server retry thresh */
#define	NFSMNT_RESVPORT		0x00008000  /* Allocate a reserved port */
#define	NFSMNT_RDIRPLUS		0x00010000  /* Use Readdirplus for V3 */
#define	NFSMNT_READDIRSIZE	0x00020000  /* Set readdir size */
#define	NFSMNT_ACREGMIN		0x00040000
#define	NFSMNT_ACREGMAX		0x00080000
#define	NFSMNT_ACDIRMIN		0x00100000
#define	NFSMNT_ACDIRMAX		0x00200000

#define NFSSTA_HASWRITEVERF	0x00040000  /* Has write verifier for V3 */
#define NFSSTA_GOTPATHCONF	0x00080000  /* Got the V3 pathconf info */
#define NFSSTA_GOTFSINFO	0x00100000  /* Got the V3 fsinfo */
#define	NFSSTA_MNTD		0x00200000  /* Mnt server for mnt point */
#define	NFSSTA_DISMINPROG	0x00400000  /* Dismount in progress */
#define	NFSSTA_DISMNT		0x00800000  /* Dismounted */
#define	NFSSTA_SNDLOCK		0x01000000  /* Send socket lock */
#define	NFSSTA_WANTSND		0x02000000  /* Want above */
#define	NFSSTA_RCVLOCK		0x04000000  /* Rcv socket lock */
#define	NFSSTA_WANTRCV		0x08000000  /* Want above */
#define	NFSSTA_WAITAUTH		0x10000000  /* Wait for authentication */
#define	NFSSTA_HASAUTH		0x20000000  /* Has authenticator */
#define	NFSSTA_WANTAUTH		0x40000000  /* Wants an authenticator */
#define	NFSSTA_AUTHERR		0x80000000  /* Authentication error */

/*
 * Structures for the nfssvc(2) syscall. Not that anyone but nfsd and mount_nfs
 * should ever try and use it.
 */
struct nfsd_args {
	int	sock;		/* Socket to serve */
	caddr_t	name;		/* Client addr for connection based sockets */
	int	namelen;	/* Length of name */
};

struct nfsd_srvargs {
	struct nfsd	*nsd_nfsd;	/* Pointer to in kernel nfsd struct */
	uid_t		nsd_uid;	/* Effective uid mapped to cred */
	u_int32_t	nsd_haddr;	/* Ip address of client */
	struct ucred	nsd_cr;		/* Cred. uid maps to */
	int		nsd_authlen;	/* Length of auth string (ret) */
	u_char		*nsd_authstr;	/* Auth string (ret) */
	int		nsd_verflen;	/* and the verfier */
	u_char		*nsd_verfstr;
	struct timeval	nsd_timestamp;	/* timestamp from verifier */
	u_int32_t	nsd_ttl;	/* credential ttl (sec) */
	NFSKERBKEY_T	nsd_key;	/* Session key */
};

struct nfsd_cargs {
	char		*ncd_dirp;	/* Mount dir path */
	uid_t		ncd_authuid;	/* Effective uid */
	int		ncd_authtype;	/* Type of authenticator */
	int		ncd_authlen;	/* Length of authenticator string */
	u_char		*ncd_authstr;	/* Authenticator string */
	int		ncd_verflen;	/* and the verifier */
	u_char		*ncd_verfstr;
	NFSKERBKEY_T	ncd_key;	/* Session key */
};

/*
 * XXX to allow amd to include nfs.h without nfsproto.h
 */
#ifdef NFS_NPROCS
/*
 * Stats structure
 */
struct nfsstats {
	int	attrcache_hits;
	int	attrcache_misses;
	int	lookupcache_hits;
	int	lookupcache_misses;
	int	direofcache_hits;
	int	direofcache_misses;
	int	biocache_reads;
	int	read_bios;
	int	read_physios;
	int	biocache_writes;
	int	write_bios;
	int	write_physios;
	int	biocache_readlinks;
	int	readlink_bios;
	int	biocache_readdirs;
	int	readdir_bios;
	int	rpccnt[NFS_NPROCS];
	int	rpcretries;
	int	srvrpccnt[NFS_NPROCS];
	int	srvrpc_errs;
	int	srv_errs;
	int	rpcrequests;
	int	rpctimeouts;
	int	rpcunexpected;
	int	rpcinvalid;
	int	srvcache_inproghits;
	int	srvcache_idemdonehits;
	int	srvcache_nonidemdonehits;
	int	srvcache_misses;
	int	srvnqnfs_leases;
	int	srvnqnfs_maxleases;
	int	srvnqnfs_getleases;
	int	srvvop_writes;
	int	accesscache_hits;
	int	accesscache_misses;
};
#endif

/*
 * Flags for nfssvc() system call.
 */
#define	NFSSVC_BIOD	0x002
#define	NFSSVC_NFSD	0x004
#define	NFSSVC_ADDSOCK	0x008
#define	NFSSVC_AUTHIN	0x010
#define	NFSSVC_GOTAUTH	0x040
#define	NFSSVC_AUTHINFAIL 0x080
#define	NFSSVC_MNTD	0x100

/*
 * fs.nfs sysctl(3) identifiers
 */
#define NFS_NFSSTATS	1		/* struct: struct nfsstats */
#define NFS_NFSPRIVPORT	2		/* int: prohibit nfs to resvports */

#define FS_NFS_NAMES { \
		       { 0, 0 }, \
		       { "nfsstats", CTLTYPE_STRUCT }, \
		       { "nfsprivport", CTLTYPE_INT }, \
}

#ifdef _KERNEL

#ifdef MALLOC_DECLARE
MALLOC_DECLARE(M_NFSREQ);
MALLOC_DECLARE(M_NFSDIROFF);
MALLOC_DECLARE(M_NFSRVDESC);
MALLOC_DECLARE(M_NFSUID);
MALLOC_DECLARE(M_NQLEASE);
MALLOC_DECLARE(M_NFSD);
MALLOC_DECLARE(M_NFSBIGFH);
MALLOC_DECLARE(M_NFSHASH);
#endif

#ifdef ZONE_INTERRUPT
extern vm_zone_t nfsmount_zone;
#endif

extern struct callout_handle nfs_timer_handle;

struct uio; struct buf; struct vattr; struct nameidata;	/* XXX */

/*
 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts.
 * What should be in this set is open to debate, but I believe that since
 * I/O system calls on ufs are never interrupted by signals the set should
 * be minimal. My reasoning is that many current programs that use signals
 * such as SIGALRM will not expect file I/O system calls to be interrupted
 * by them and break.
 */
#define	NFSINT_SIGMASK(set) 						\
	(SIGISMEMBER(set, SIGINT) || SIGISMEMBER(set, SIGTERM) ||	\
	 SIGISMEMBER(set, SIGHUP) || SIGISMEMBER(set, SIGKILL) ||	\
	 SIGISMEMBER(set, SIGQUIT))

/*
 * Socket errors ignored for connectionless sockets??
 * For now, ignore them all
 */
#define	NFSIGNORE_SOERROR(s, e) \
		((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \
		((s) & PR_CONNREQUIRED) == 0)

/*
 * Nfs outstanding request list element
 */
struct nfsreq {
	TAILQ_ENTRY(nfsreq) r_chain;
	struct mbuf	*r_mreq;
	struct mbuf	*r_mrep;
	struct mbuf	*r_md;
	caddr_t		r_dpos;
	struct nfsmount *r_nmp;
	struct vnode	*r_vp;
	u_int32_t	r_xid;
	int		r_flags;	/* flags on request, see below */
	int		r_retry;	/* max retransmission count */
	int		r_rexmit;	/* current retrans count */
	int		r_timer;	/* tick counter on reply */
	u_int32_t	r_procnum;	/* NFS procedure number */
	int		r_rtt;		/* RTT for rpc */
	struct proc	*r_procp;	/* Proc that did I/O system call */
};

/*
 * Queue head for nfsreq's
 */
extern TAILQ_HEAD(nfs_reqq, nfsreq) nfs_reqq;

/* Flag values for r_flags */
#define R_TIMING	0x01		/* timing request (in mntp) */
#define R_SENT		0x02		/* request has been sent */
#define	R_SOFTTERM	0x04		/* soft mnt, too many retries */
#define	R_INTR		0x08		/* intr mnt, signal pending */
#define	R_SOCKERR	0x10		/* Fatal error on socket */
#define	R_TPRINTFMSG	0x20		/* Did a tprintf msg. */
#define	R_MUSTRESEND	0x40		/* Must resend request */
#define	R_GETONEREP	0x80		/* Probe for one reply only */

/*
 * A list of nfssvc_sock structures is maintained with all the sockets
 * that require service by the nfsd.
 * The nfsuid structs hang off of the nfssvc_sock structs in both lru
 * and uid hash lists.
 */
#ifndef NFS_UIDHASHSIZ
#define	NFS_UIDHASHSIZ	29	/* Tune the size of nfssvc_sock with this */
#endif
#define	NUIDHASH(sock, uid) \
	(&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ])
#ifndef NFS_WDELAYHASHSIZ
#define	NFS_WDELAYHASHSIZ 16	/* and with this */
#endif
#define	NWDELAYHASH(sock, f) \
	(&(sock)->ns_wdelayhashtbl[(*((u_int32_t *)(f))) % NFS_WDELAYHASHSIZ])
#ifndef NFS_MUIDHASHSIZ
#define NFS_MUIDHASHSIZ	63	/* Tune the size of nfsmount with this */
#endif
#define	NMUIDHASH(nmp, uid) \
	(&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ])
#define	NFSNOHASH(fhsum) \
	(&nfsnodehashtbl[(fhsum) & nfsnodehash])

/*
 * Network address hash list element
 */
union nethostaddr {
	u_int32_t had_inetaddr;
	struct sockaddr *had_nam;
};

struct nfsuid {
	TAILQ_ENTRY(nfsuid) nu_lru;	/* LRU chain */
	LIST_ENTRY(nfsuid) nu_hash;	/* Hash list */
	int		nu_flag;	/* Flags */
	union nethostaddr nu_haddr;	/* Host addr. for dgram sockets */
	struct ucred	nu_cr;		/* Cred uid mapped to */
	int		nu_expire;	/* Expiry time (sec) */
	struct timeval	nu_timestamp;	/* Kerb. timestamp */
	u_int32_t	nu_nickname;	/* Nickname on server */
	NFSKERBKEY_T	nu_key;		/* and session key */
};

#define	nu_inetaddr	nu_haddr.had_inetaddr
#define	nu_nam		nu_haddr.had_nam
/* Bits for nu_flag */
#define	NU_INETADDR	0x1
#define NU_NAM		0x2
#define NU_NETFAM(u)	(((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_ISO)

struct nfsrv_rec {
	STAILQ_ENTRY(nfsrv_rec) nr_link;
	struct sockaddr	*nr_address;
	struct mbuf	*nr_packet;
};

struct nfssvc_sock {
	TAILQ_ENTRY(nfssvc_sock) ns_chain;	/* List of all nfssvc_sock's */
	TAILQ_HEAD(, nfsuid) ns_uidlruhead;
	struct file	*ns_fp;
	struct socket	*ns_so;
	struct sockaddr	*ns_nam;
	struct mbuf	*ns_raw;
	struct mbuf	*ns_rawend;
	STAILQ_HEAD(, nfsrv_rec) ns_rec;
	struct mbuf	*ns_frag;
	int		ns_flag;
	int		ns_solock;
	int		ns_cc;
	int		ns_reclen;
	int		ns_numuids;
	u_int32_t	ns_sref;
	LIST_HEAD(, nfsrv_descript) ns_tq;	/* Write gather lists */
	LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ];
	LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ];
};

/* Bits for "ns_flag" */
#define	SLP_VALID	0x01
#define	SLP_DOREC	0x02
#define	SLP_NEEDQ	0x04
#define	SLP_DISCONN	0x08
#define	SLP_GETSTREAM	0x10
#define	SLP_LASTFRAG	0x20
#define SLP_ALLFLAGS	0xff

extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead;
extern int nfssvc_sockhead_flag;
#define	SLP_INIT	0x01
#define	SLP_WANTINIT	0x02

/*
 * One of these structures is allocated for each nfsd.
 */
struct nfsd {
	TAILQ_ENTRY(nfsd) nfsd_chain;	/* List of all nfsd's */
	int		nfsd_flag;	/* NFSD_ flags */
	struct nfssvc_sock *nfsd_slp;	/* Current socket */
	int		nfsd_authlen;	/* Authenticator len */
	u_char		nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */
	int		nfsd_verflen;	/* and the Verifier */
	u_char		nfsd_verfstr[RPCVERF_MAXSIZ];
	struct proc	*nfsd_procp;	/* Proc ptr */
	struct nfsrv_descript *nfsd_nd;	/* Associated nfsrv_descript */
};

/* Bits for "nfsd_flag" */
#define	NFSD_WAITING	0x01
#define	NFSD_REQINPROG	0x02
#define	NFSD_NEEDAUTH	0x04
#define	NFSD_AUTHFAIL	0x08

/*
 * This structure is used by the server for describing each request.
 * Some fields are used only when write request gathering is performed.
 */
struct nfsrv_descript {
	u_quad_t		nd_time;	/* Write deadline (usec) */
	off_t			nd_off;		/* Start byte offset */
	off_t			nd_eoff;	/* and end byte offset */
	LIST_ENTRY(nfsrv_descript) nd_hash;	/* Hash list */
	LIST_ENTRY(nfsrv_descript) nd_tq;		/* and timer list */
	LIST_HEAD(,nfsrv_descript) nd_coalesce;	/* coalesced writes */
	struct mbuf		*nd_mrep;	/* Request mbuf list */
	struct mbuf		*nd_md;		/* Current dissect mbuf */
	struct mbuf		*nd_mreq;	/* Reply mbuf list */
	struct sockaddr		*nd_nam;	/* and socket addr */
	struct sockaddr		*nd_nam2;	/* return socket addr */
	caddr_t			nd_dpos;	/* Current dissect pos */
	u_int32_t		nd_procnum;	/* RPC # */
	int			nd_stable;	/* storage type */
	int			nd_flag;	/* nd_flag */
	int			nd_len;		/* Length of this write */
	int			nd_repstat;	/* Reply status */
	u_int32_t		nd_retxid;	/* Reply xid */
	u_int32_t		nd_duration;	/* Lease duration */
	struct timeval		nd_starttime;	/* Time RPC initiated */
	fhandle_t		nd_fh;		/* File handle */
	struct ucred		nd_cr;		/* Credentials */
};

/* Bits for "nd_flag" */
#define	ND_READ		LEASE_READ
#define ND_WRITE	LEASE_WRITE
#define ND_CHECK	0x04
#define ND_LEASE	(ND_READ | ND_WRITE | ND_CHECK)
#define ND_NFSV3	0x08
#define ND_NQNFS	0x10
#define ND_KERBNICK	0x20
#define ND_KERBFULL	0x40
#define ND_KERBAUTH	(ND_KERBNICK | ND_KERBFULL)

extern TAILQ_HEAD(nfsd_head, nfsd) nfsd_head;
extern int nfsd_head_flag;
#define	NFSD_CHECKSLP	0x01

/*
 * These macros compare nfsrv_descript structures.
 */
#define NFSW_CONTIG(o, n) \
		((o)->nd_eoff >= (n)->nd_off && \
		 !bcmp((caddr_t)&(o)->nd_fh, (caddr_t)&(n)->nd_fh, NFSX_V3FH))

#define NFSW_SAMECRED(o, n) \
	(((o)->nd_flag & ND_KERBAUTH) == ((n)->nd_flag & ND_KERBAUTH) && \
 	 !bcmp((caddr_t)&(o)->nd_cr, (caddr_t)&(n)->nd_cr, \
		sizeof (struct ucred)))

/*
 * Defines for WebNFS
 */

#define WEBNFS_ESC_CHAR		'%'
#define WEBNFS_SPECCHAR_START	0x80

#define WEBNFS_NATIVE_CHAR	0x80
/*
 * ..
 * Possibly more here in the future.
 */

/*
 * Macro for converting escape characters in WebNFS pathnames.
 * Should really be in libkern.
 */

#define HEXTOC(c) \
	((c) >= 'a' ? ((c) - ('a' - 10)) : \
	    ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0')))
#define HEXSTRTOI(p) \
	((HEXTOC(p[0]) << 4) + HEXTOC(p[1]))

#ifdef NFS_DEBUG

extern int nfs_debug;
#define NFS_DEBUG_ASYNCIO	1 /* asynchronous i/o */
#define NFS_DEBUG_WG		2 /* server write gathering */
#define NFS_DEBUG_RC		4 /* server request caching */

#define NFS_DPF(cat, args)					\
	do {							\
		if (nfs_debug & NFS_DEBUG_##cat) printf args;	\
	} while (0)

#else

#define NFS_DPF(cat, args)

#endif

u_quad_t nfs_curusec __P((void));
int	nfs_init __P((struct vfsconf *vfsp));
int	nfs_uninit __P((struct vfsconf *vfsp));
int	nfs_reply __P((struct nfsreq *));
int	nfs_getreq __P((struct nfsrv_descript *,struct nfsd *,int));
int	nfs_send __P((struct socket *, struct sockaddr *, struct mbuf *, 
		      struct nfsreq *));
int	nfs_rephead __P((int, struct nfsrv_descript *, struct nfssvc_sock *,
			 int, int, u_quad_t *, struct mbuf **, struct mbuf **,
			 caddr_t *));
int	nfs_sndlock __P((struct nfsreq *));
void	nfs_sndunlock __P((struct nfsreq *));
int	nfs_slplock __P((struct nfssvc_sock *, int));
void	nfs_slpunlock __P((struct nfssvc_sock *));
int	nfs_disct __P((struct mbuf **, caddr_t *, int, int, caddr_t *));
int	nfs_vinvalbuf __P((struct vnode *, int, struct ucred *, struct proc *,
			   int));
int	nfs_readrpc __P((struct vnode *, struct uio *, struct ucred *));
int	nfs_writerpc __P((struct vnode *, struct uio *, struct ucred *, int *, 
			  int *));
int	nfs_commit __P((struct vnode *vp, u_quad_t offset, int cnt, 
			struct ucred *cred, struct proc *procp));
int	nfs_readdirrpc __P((struct vnode *, struct uio *, struct ucred *));
int	nfs_asyncio __P((struct buf *, struct ucred *, struct proc *));
int	nfs_doio __P((struct buf *, struct ucred *, struct proc *));
int	nfs_readlinkrpc __P((struct vnode *, struct uio *, struct ucred *));
int	nfs_sigintr __P((struct nfsmount *, struct nfsreq *, struct proc *));
int	nfs_readdirplusrpc __P((struct vnode *, struct uio *, struct ucred *));
int	nfsm_disct __P((struct mbuf **, caddr_t *, int, int, caddr_t *));
void	nfsm_srvfattr __P((struct nfsrv_descript *, struct vattr *, 
			   struct nfs_fattr *));
void	nfsm_srvwcc __P((struct nfsrv_descript *, int, struct vattr *, int,
			 struct vattr *, struct mbuf **, char **));
void	nfsm_srvpostopattr __P((struct nfsrv_descript *, int, struct vattr *,
				struct mbuf **, char **));
int	netaddr_match __P((int, union nethostaddr *, struct sockaddr *));
int	nfs_request __P((struct vnode *, struct mbuf *, int, struct proc *,
			 struct ucred *, struct mbuf **, struct mbuf **,
			 caddr_t *));
int	nfs_loadattrcache __P((struct vnode **, struct mbuf **, caddr_t *,
			       struct vattr *, int));
int	nfs_namei __P((struct nameidata *, fhandle_t *, int,
		       struct nfssvc_sock *, struct sockaddr *, struct mbuf **,
		       caddr_t *, struct vnode **, struct proc *, int, int));
void	nfsm_adj __P((struct mbuf *, int, int));
int	nfsm_mbuftouio __P((struct mbuf **, struct uio *, int, caddr_t *));
void	nfsrv_initcache __P((void));
int	nfs_getauth __P((struct nfsmount *, struct nfsreq *, struct ucred *, 
			 char **, int *, char *, int *, NFSKERBKEY_T));
int	nfs_getnickauth __P((struct nfsmount *, struct ucred *, char **, 
			     int *, char *, int));
int	nfs_savenickauth __P((struct nfsmount *, struct ucred *, int, 
			      NFSKERBKEY_T, struct mbuf **, char **,
			      struct mbuf *));
int	nfs_adv __P((struct mbuf **, caddr_t *, int, int));
void	nfs_nhinit __P((void));
void	nfs_timer __P((void*));
u_long	nfs_hash __P((nfsfh_t *, int));
int	nfsrv_dorec __P((struct nfssvc_sock *, struct nfsd *, 
			 struct nfsrv_descript **));
int	nfsrv_getcache __P((struct nfsrv_descript *, struct nfssvc_sock *,
			    struct mbuf **));
void	nfsrv_updatecache __P((struct nfsrv_descript *, int, struct mbuf *));
void	nfsrv_cleancache __P((void));
int	nfs_connect __P((struct nfsmount *, struct nfsreq *));
void	nfs_disconnect __P((struct nfsmount *));
void	nfs_safedisconnect __P((struct nfsmount *));
int	nfs_getattrcache __P((struct vnode *, struct vattr *));
int	nfsm_strtmbuf __P((struct mbuf **, char **, const char *, long));
int	nfs_bioread __P((struct vnode *, struct uio *, int, struct ucred *));
int	nfsm_uiotombuf __P((struct uio *, struct mbuf **, int, caddr_t *));
void	nfsrv_init __P((int));
void	nfs_clearcommit __P((struct mount *));
int	nfsrv_errmap __P((struct nfsrv_descript *, int));
void	nfsrvw_sort __P((gid_t *, int));
void	nfsrv_setcred __P((struct ucred *, struct ucred *));
int	nfs_writebp __P((struct buf *, int, struct proc *));
int	nfsrv_object_create __P((struct vnode *));
void	nfsrv_wakenfsd __P((struct nfssvc_sock *slp));
int	nfsrv_writegather __P((struct nfsrv_descript **, struct nfssvc_sock *,
			       struct proc *, struct mbuf **));
int	nfs_fsinfo __P((struct nfsmount *, struct vnode *, struct ucred *,
			struct proc *p));

int	nfsrv3_access __P((struct nfsrv_descript *nfsd, 
			   struct nfssvc_sock *slp,
			   struct proc *procp, struct mbuf **mrq));
int	nfsrv_commit __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			  struct proc *procp, struct mbuf **mrq));
int	nfsrv_create __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			  struct proc *procp, struct mbuf **mrq));
int	nfsrv_fhtovp __P((fhandle_t *, int, struct vnode **, struct ucred *,
			  struct nfssvc_sock *, struct sockaddr *, int *, 
			  int, int));
int	nfsrv_setpublicfs __P((struct mount *, struct netexport *,
			       struct export_args *));
int	nfs_ispublicfh __P((fhandle_t *));
int	nfsrv_fsinfo __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			  struct proc *procp, struct mbuf **mrq));
int	nfsrv_getattr __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			   struct proc *procp, struct mbuf **mrq));
int	nfsrv_link __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			struct proc *procp, struct mbuf **mrq));
int	nfsrv_lookup __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			  struct proc *procp, struct mbuf **mrq));
int	nfsrv_mkdir __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			 struct proc *procp, struct mbuf **mrq));
int	nfsrv_mknod __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			 struct proc *procp, struct mbuf **mrq));
int	nfsrv_noop __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			struct proc *procp, struct mbuf **mrq));
int	nfsrv_null __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			struct proc *procp, struct mbuf **mrq));
int	nfsrv_pathconf __P((struct nfsrv_descript *nfsd,
			    struct nfssvc_sock *slp, struct proc *procp,
			    struct mbuf **mrq));
int	nfsrv_read __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			struct proc *procp, struct mbuf **mrq));
int	nfsrv_readdir __P((struct nfsrv_descript *nfsd, 
			   struct nfssvc_sock *slp,
			   struct proc *procp, struct mbuf **mrq));
int	nfsrv_readdirplus __P((struct nfsrv_descript *nfsd,
			       struct nfssvc_sock *slp, struct proc *procp,
			       struct mbuf **mrq));
int	nfsrv_readlink __P((struct nfsrv_descript *nfsd,
			    struct nfssvc_sock *slp, struct proc *procp,
			    struct mbuf **mrq));
int	nfsrv_remove __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			  struct proc *procp, struct mbuf **mrq));
int	nfsrv_rename __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			  struct proc *procp, struct mbuf **mrq));
int	nfsrv_rmdir __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			 struct proc *procp, struct mbuf **mrq));
int	nfsrv_setattr __P((struct nfsrv_descript *nfsd, 
			   struct nfssvc_sock *slp,
			   struct proc *procp, struct mbuf **mrq));
int	nfsrv_statfs __P((struct nfsrv_descript *nfsd, 
			  struct nfssvc_sock *slp,
			  struct proc *procp, struct mbuf **mrq));
int	nfsrv_symlink __P((struct nfsrv_descript *nfsd, 
			   struct nfssvc_sock *slp,
			   struct proc *procp, struct mbuf **mrq));
int	nfsrv_write __P((struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
			 struct proc *procp, struct mbuf **mrq));
void	nfsrv_rcv __P((struct socket *so, void *arg, int waitflag));
void	nfsrv_slpderef __P((struct nfssvc_sock *slp));
#endif	/* _KERNEL */

#endif
OpenPOWER on IntegriCloud