1 /* $NetBSD: nfs.h,v 1.70 2008/10/22 11:36:06 matt Exp $ */ 2 /* 3 * Copyright (c) 1989, 1993, 1995 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Rick Macklem at The University of Guelph. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)nfs.h 8.4 (Berkeley) 5/1/95 34 */ 35 36 #ifndef _NFS_NFS_H_ 37 #define _NFS_NFS_H_ 38 39 #ifdef _KERNEL 40 #include <sys/condvar.h> 41 #include <sys/fstypes.h> 42 #include <sys/mbuf.h> 43 #include <sys/mutex.h> 44 #endif 45 46 /* 47 * Tunable constants for nfs 48 */ 49 50 #define NFS_MAXIOVEC 34 51 #define NFS_TICKINTVL 5 /* Desired time for a tick (msec) */ 52 #define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */ 53 #define NFS_TIMEO (3 * NFS_HZ) /* Default timeout = 3 seconds */ 54 #define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */ 55 #define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */ 56 #define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/ 57 #define NFS_MAXREXMIT 100 /* Stop counting after this many */ 58 #define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */ 59 #define NFS_RETRANS 10 /* Num of retrans for soft mounts */ 60 #define NFS_MAXGRPS 16 /* Max. size of groups list */ 61 #ifndef NFS_MINATTRTIMO 62 #define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */ 63 #endif 64 #ifndef NFS_MAXATTRTIMO 65 #define NFS_MAXATTRTIMO 60 66 #endif 67 #define NFS_TRYLATERDEL 1 /* Initial try later delay (sec) */ 68 #define NFS_TRYLATERDELMAX (1*60) /* Maximum try later delay (sec) */ 69 #define NFS_TRYLATERDELMUL 2 /* Exponential backoff multiplier */ 70 71 /* 72 * These can be overridden through <machine/param.h>, included via 73 * <sys/param.h>. This means that <sys/param.h> should always be 74 * included before this file. 75 */ 76 #ifndef NFS_WSIZE 77 #define NFS_WSIZE 8192 /* Def. write data size */ 78 #endif 79 #ifndef NFS_RSIZE 80 #define NFS_RSIZE 8192 /* Def. read data size */ 81 #endif 82 #ifndef NFS_READDIRSIZE 83 #define NFS_READDIRSIZE 8192 /* Def. readdir size */ 84 #endif 85 86 /* 87 * NFS client IO daemon threads. May be overridden by config options. 88 */ 89 #ifndef NFS_MAXASYNCDAEMON 90 #define NFS_MAXASYNCDAEMON 128 /* Max. number async_daemons runable */ 91 #endif 92 93 /* 94 * NFS client read-ahead. May be overridden by config options. 95 * Should be no more than NFS_MAXASYNCDAEMON as each read-ahead operation 96 * requires one IO thread. 97 */ 98 #ifndef NFS_MAXRAHEAD 99 #define NFS_MAXRAHEAD 32 /* Max. read ahead # blocks */ 100 #endif 101 #define NFS_DEFRAHEAD 2 /* Def. read ahead # blocks */ 102 103 #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */ 104 105 #define NFS_DEFDEADTHRESH NFS_NEVERDEAD /* Default nm_deadthresh */ 106 #define NFS_NEVERDEAD 9 /* Greater than max. nm_timeouts */ 107 108 #ifdef _KERNEL 109 extern int nfs_niothreads; /* Number of async_daemons desired */ 110 #ifndef NFS_DEFAULT_NIOTHREADS 111 #define NFS_DEFAULT_NIOTHREADS 4 112 #endif 113 #endif 114 #define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */ 115 #ifndef NFS_GATHERDELAY 116 #define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */ 117 #endif 118 119 /* 120 * NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for 121 * NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount 122 * of data in those buffers, and thus the minimum amount of data 123 * that you can request. NFS_DIRFRAGSIZ should be no smaller than 124 * DIRBLKSIZ. 125 */ 126 127 #define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */ 128 #define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */ 129 130 /* 131 * Maximum number of directory entries cached per NFS node, to avoid 132 * having this grow without bounds on very large directories. The 133 * minimum size to get reasonable performance for emulated binaries 134 * is the maximum number of entries that fits in NFS_DIRBLKSIZ. 135 * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36. 136 */ 137 #define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14) 138 139 /* 140 * Oddballs 141 */ 142 #define NFS_CMPFH(n, f, s) \ 143 ((n)->n_fhsize == (s) && !memcmp((void *)(n)->n_fhp, (void *)(f), (s))) 144 #ifdef NFS_V2_ONLY 145 #define NFS_ISV3(v) (0) 146 #else 147 #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) 148 #endif 149 #define NFS_SRVMAXDATA(n) \ 150 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ 151 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) 152 153 /* 154 * Use the vm_page flag reserved for pager use to indicate pages 155 * which have been written to the server but not yet committed. 156 */ 157 #define PG_NEEDCOMMIT PG_PAGER1 158 159 /* 160 * The IO_METASYNC flag should be implemented for local file systems. 161 * (Until then, it is nothin at all.) 162 */ 163 #ifndef IO_METASYNC 164 #define IO_METASYNC 0 165 #endif 166 167 /* 168 * Export arguments for local filesystem mount calls. 169 * Keep in mind that changing this structure modifies nfssvc(2)'s ABI (see 170 * 'struct mountd_exports_list' below). 171 * When modifying this structure, take care to also edit the 172 * nfs_update_exports_30 function in nfs_export.c accordingly to convert 173 * export_args to export_args30. 174 */ 175 struct export_args { 176 int ex_flags; /* export related flags */ 177 uid_t ex_root; /* mapping for root uid */ 178 struct uucred ex_anon; /* mapping for anonymous user */ 179 struct sockaddr *ex_addr; /* net address to which exported */ 180 int ex_addrlen; /* and the net address length */ 181 struct sockaddr *ex_mask; /* mask of valid bits in saddr */ 182 int ex_masklen; /* and the smask length */ 183 char *ex_indexfile; /* index file for WebNFS URLs */ 184 }; 185 186 /* 187 * Structures for the nfssvc(2) syscall. Not that anyone but mountd, nfsd and 188 * mount_nfs should ever try and use it. 189 */ 190 struct nfsd_args { 191 int sock; /* Socket to serve */ 192 void * name; /* Client addr for connection based sockets */ 193 int namelen; /* Length of name */ 194 }; 195 196 struct nfsd_srvargs { 197 struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ 198 uid_t nsd_uid; /* Effective uid mapped to cred */ 199 u_int32_t nsd_haddr; /* Ip address of client */ 200 struct uucred nsd_cr; /* Cred. uid maps to */ 201 int nsd_authlen; /* Length of auth string (ret) */ 202 u_char *nsd_authstr; /* Auth string (ret) */ 203 int nsd_verflen; /* and the verfier */ 204 u_char *nsd_verfstr; 205 struct timeval nsd_timestamp; /* timestamp from verifier */ 206 u_int32_t nsd_ttl; /* credential ttl (sec) */ 207 NFSKERBKEY_T nsd_key; /* Session key */ 208 }; 209 210 struct nfsd_cargs { 211 char *ncd_dirp; /* Mount dir path */ 212 uid_t ncd_authuid; /* Effective uid */ 213 int ncd_authtype; /* Type of authenticator */ 214 u_int ncd_authlen; /* Length of authenticator string */ 215 u_char *ncd_authstr; /* Authenticator string */ 216 u_int ncd_verflen; /* and the verifier */ 217 u_char *ncd_verfstr; 218 NFSKERBKEY_T ncd_key; /* Session key */ 219 }; 220 221 struct mountd_exports_list { 222 const char *mel_path; 223 size_t mel_nexports; 224 struct export_args *mel_exports; 225 }; 226 227 /* 228 * try to keep nfsstats, which is exposed to userland via sysctl, 229 * compatible after NQNFS removal. 230 * 26 is the old value of NFS_NPROCS, which includes NQNFS procedures. 231 */ 232 #define NFSSTATS_NPROCS 26 233 234 /* 235 * Stats structure 236 */ 237 struct nfsstats { 238 int attrcache_hits; 239 int attrcache_misses; 240 int lookupcache_hits; 241 int lookupcache_misses; 242 int direofcache_hits; 243 int direofcache_misses; 244 int biocache_reads; 245 int read_bios; 246 int read_physios; 247 int biocache_writes; 248 int write_bios; 249 int write_physios; 250 int biocache_readlinks; 251 int readlink_bios; 252 int biocache_readdirs; 253 int readdir_bios; 254 int rpccnt[NFSSTATS_NPROCS]; 255 int rpcretries; 256 int srvrpccnt[NFSSTATS_NPROCS]; 257 int srvrpc_errs; 258 int srv_errs; 259 int rpcrequests; 260 int rpctimeouts; 261 int rpcunexpected; 262 int rpcinvalid; 263 int srvcache_inproghits; 264 int srvcache_idemdonehits; 265 int srvcache_nonidemdonehits; 266 int srvcache_misses; 267 int __srvnqnfs_leases; /* unused */ 268 int __srvnqnfs_maxleases; /* unused */ 269 int __srvnqnfs_getleases; /* unused */ 270 int srvvop_writes; 271 }; 272 273 /* 274 * Flags for nfssvc() system call. 275 */ 276 #define NFSSVC_BIOD 0x002 277 #define NFSSVC_NFSD 0x004 278 #define NFSSVC_ADDSOCK 0x008 279 #define NFSSVC_AUTHIN 0x010 280 #define NFSSVC_GOTAUTH 0x040 281 #define NFSSVC_AUTHINFAIL 0x080 282 #define NFSSVC_MNTD 0x100 283 #define NFSSVC_SETEXPORTSLIST 0x200 284 285 /* 286 * fs.nfs sysctl(3) identifiers 287 */ 288 #define NFS_NFSSTATS 1 /* struct: struct nfsstats */ 289 #define NFS_IOTHREADS 2 /* number of io threads */ 290 #define NFS_MAXID 3 291 292 #define NFS_NAMES { \ 293 { 0, 0 }, \ 294 { "nfsstats", CTLTYPE_STRUCT }, \ 295 { "iothreads", CTLTYPE_INT }, \ 296 } 297 298 /* 299 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts. 300 * What should be in this set is open to debate, but I believe that since 301 * I/O system calls on ufs are never interrupted by signals the set should 302 * be minimal. My reasoning is that many current programs that use signals 303 * such as SIGALRM will not expect file I/O system calls to be interrupted 304 * by them and break. 305 */ 306 #ifdef _KERNEL 307 308 struct uio; struct buf; struct vattr; struct nameidata; /* XXX */ 309 310 /* 311 * Socket errors ignored for connectionless sockets?? 312 * For now, ignore them all 313 */ 314 #define NFSIGNORE_SOERROR(s, e) \ 315 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \ 316 ((s) & PR_CONNREQUIRED) == 0) 317 318 /* 319 * Nfs outstanding request list element 320 */ 321 struct nfsreq { 322 TAILQ_ENTRY(nfsreq) r_chain; 323 struct mbuf *r_mreq; 324 struct mbuf *r_mrep; 325 struct mbuf *r_md; 326 void * r_dpos; 327 struct nfsmount *r_nmp; 328 u_int32_t r_xid; 329 int r_flags; /* flags on request, see below */ 330 int r_retry; /* max retransmission count */ 331 int r_rexmit; /* current retrans count */ 332 int r_timer; /* tick counter on reply */ 333 u_int32_t r_procnum; /* NFS procedure number */ 334 int r_rtt; /* RTT for rpc */ 335 struct lwp *r_lwp; /* LWP that did I/O system call */ 336 }; 337 338 /* 339 * Queue head for nfsreq's 340 */ 341 extern TAILQ_HEAD(nfsreqhead, nfsreq) nfs_reqq; 342 343 /* Flag values for r_flags */ 344 #define R_TIMING 0x01 /* timing request (in mntp) */ 345 #define R_SENT 0x02 /* request has been sent */ 346 #define R_SOFTTERM 0x04 /* soft mnt, too many retries */ 347 #define R_INTR 0x08 /* intr mnt, signal pending */ 348 #define R_SOCKERR 0x10 /* Fatal error on socket */ 349 #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ 350 #define R_MUSTRESEND 0x40 /* Must resend request */ 351 #define R_REXMITTED 0x100 /* retransmitted after reconnect */ 352 353 /* 354 * A list of nfssvc_sock structures is maintained with all the sockets 355 * that require service by the nfsd. 356 * The nfsuid structs hang off of the nfssvc_sock structs in both lru 357 * and uid hash lists. 358 */ 359 #ifndef NFS_UIDHASHSIZ 360 #define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */ 361 #endif 362 #define NUIDHASH(sock, uid) \ 363 (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ]) 364 #ifndef NFS_WDELAYHASHSIZ 365 #define NFS_WDELAYHASHSIZ 16 /* and with this */ 366 #endif 367 #ifndef NFS_MUIDHASHSIZ 368 #define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */ 369 #endif 370 #define NMUIDHASH(nmp, uid) \ 371 (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ]) 372 373 #ifndef NFS_DIRHASHSIZ 374 #define NFS_DIRHASHSIZ 64 375 #endif 376 #define NFSDIRHASH(np, off) \ 377 (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)]) 378 379 /* 380 * Macros for storing/retrieving cookies into directory buffers. 381 */ 382 #define NFS_STASHCOOKIE(dp,off) \ 383 *((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t))) = off 384 #define NFS_GETCOOKIE(dp) \ 385 (*((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t)))) 386 #define NFS_STASHCOOKIE32(dp, val) \ 387 *((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 388 sizeof (int))) = val 389 #define NFS_GETCOOKIE32(dp) \ 390 (*((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 391 sizeof (int)))) 392 393 /* 394 * Flags passed to nfs_bioread(). 395 */ 396 #define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */ 397 398 /* 399 * Network address hash list element 400 */ 401 union nethostaddr { 402 u_int32_t had_inetaddr; 403 struct mbuf *had_nam; 404 }; 405 406 struct nfsuid { 407 TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */ 408 LIST_ENTRY(nfsuid) nu_hash; /* Hash list */ 409 int nu_flag; /* Flags */ 410 union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ 411 kauth_cred_t nu_cr; /* Cred uid mapped to */ 412 int nu_expire; /* Expiry time (sec) */ 413 struct timeval nu_timestamp; /* Kerb. timestamp */ 414 u_int32_t nu_nickname; /* Nickname on server */ 415 NFSKERBKEY_T nu_key; /* and session key */ 416 }; 417 418 #define nu_inetaddr nu_haddr.had_inetaddr 419 #define nu_nam nu_haddr.had_nam 420 /* Bits for nu_flag */ 421 #define NU_INETADDR 0x1 422 #define NU_NAM 0x2 423 #ifdef INET6 424 #define NU_NETFAM(u) \ 425 (((u)->nu_flag & NU_INETADDR) ? \ 426 (((u)->nu_flag & NU_NAM) ? AF_INET6 : AF_INET) : AF_ISO) 427 #else 428 #define NU_NETFAM(u) (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_ISO) 429 #endif 430 431 /* 432 * b: protected by SLP_BUSY 433 * g: protected by nfsd_lock 434 * s: protected by ns_lock 435 * a: protected by ns_alock 436 */ 437 438 struct nfssvc_sock { 439 kmutex_t ns_lock; 440 kmutex_t ns_alock; 441 kcondvar_t ns_cv; /* s: */ 442 TAILQ_ENTRY(nfssvc_sock) ns_chain; /* g: List of all nfssvc_sock */ 443 TAILQ_ENTRY(nfssvc_sock) ns_pending; /* g: List of pending sockets */ 444 TAILQ_HEAD(, nfsuid) ns_uidlruhead; 445 struct file *ns_fp; 446 struct socket *ns_so; 447 struct mbuf *ns_nam; 448 struct mbuf *ns_raw; /* b: */ 449 struct mbuf *ns_rawend; /* b: */ 450 struct mbuf *ns_rec; /* b: */ 451 struct mbuf *ns_recend; /* b: */ 452 struct mbuf *ns_frag; /* b: */ 453 int ns_flags; /* s: */ 454 int ns_aflags; /* a: */ 455 int ns_gflags; /* g: */ 456 int ns_sflags; /* b: */ 457 int ns_cc; /* b: */ 458 int ns_reclen; /* b: */ 459 int ns_numuids; 460 u_int32_t ns_sref; /* g: */ 461 SIMPLEQ_HEAD(, nfsrv_descript) ns_sendq; /* s: send reply list */ 462 LIST_HEAD(, nfsrv_descript) ns_tq; /* g: Write gather lists */ 463 LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ]; 464 LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; /* g: */ 465 }; 466 467 /* Bits for "ns_flags" */ 468 #define SLP_VALID 0x01 469 #define SLP_BUSY 0x10 470 #define SLP_SENDING 0x80 471 472 /* Bits for "ns_aflags" */ 473 #define SLP_A_NEEDQ 0x01 474 #define SLP_A_DISCONN 0x04 475 476 /* Bits for "ns_gflags" */ 477 #define SLP_G_DOREC 0x02 /* on nfssvc_sockpending queue */ 478 479 /* Bits for "ns_sflags" */ 480 #define SLP_S_LASTFRAG 0x40 481 482 extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead; 483 extern struct nfssvc_sockhead nfssvc_sockpending; 484 extern int nfssvc_sockhead_flag; 485 #define SLP_INIT 0x01 486 487 /* 488 * One of these structures is allocated for each nfsd. 489 */ 490 struct nfsd { 491 TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */ 492 SLIST_ENTRY(nfsd) nfsd_idle; /* List of idle nfsd's */ 493 kcondvar_t nfsd_cv; 494 int nfsd_flag; /* NFSD_ flags */ 495 struct nfssvc_sock *nfsd_slp; /* Current socket */ 496 int nfsd_authlen; /* Authenticator len */ 497 u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ 498 int nfsd_verflen; /* and the Verifier */ 499 u_char nfsd_verfstr[RPCVERF_MAXSIZ]; 500 struct proc *nfsd_procp; /* Proc ptr */ 501 struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ 502 }; 503 504 /* Bits for "nfsd_flag" */ 505 #define NFSD_NEEDAUTH 0x04 506 #define NFSD_AUTHFAIL 0x08 507 508 #define NFSD_MAXFHSIZE 64 509 typedef struct nfsrvfh { 510 size_t nsfh_size; 511 union { 512 fhandle_t u_fh; 513 uint8_t u_opaque[NFSD_MAXFHSIZE]; 514 } nsfh_u; 515 } nfsrvfh_t; 516 #define NFSRVFH_SIZE(nsfh) ((nsfh)->nsfh_size) 517 #define NFSRVFH_DATA(nsfh) ((nsfh)->nsfh_u.u_opaque) 518 #define NFSRVFH_FHANDLE(nsfh) (&(nsfh)->nsfh_u.u_fh) 519 520 /* 521 * This structure is used by the server for describing each request. 522 * Some fields are used only when write request gathering is performed. 523 */ 524 struct nfsrv_descript { 525 u_quad_t nd_time; /* Write deadline (usec) */ 526 off_t nd_off; /* Start byte offset */ 527 off_t nd_eoff; /* and end byte offset */ 528 LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ 529 LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ 530 LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ 531 SIMPLEQ_ENTRY(nfsrv_descript) nd_sendq; /* send reply list */ 532 struct mbuf *nd_mrep; /* Request mbuf list */ 533 struct mbuf *nd_md; /* Current dissect mbuf */ 534 struct mbuf *nd_mreq; /* Reply mbuf list */ 535 struct mbuf *nd_nam; /* and socket addr */ 536 struct mbuf *nd_nam2; /* return socket addr */ 537 void * nd_dpos; /* Current dissect pos */ 538 u_int32_t nd_procnum; /* RPC # */ 539 int nd_stable; /* storage type */ 540 int nd_flag; /* nd_flag */ 541 int nd_len; /* Length of this write */ 542 int nd_repstat; /* Reply status */ 543 u_int32_t nd_retxid; /* Reply xid */ 544 u_int32_t nd_duration; /* Lease duration */ 545 struct timeval nd_starttime; /* Time RPC initiated */ 546 nfsrvfh_t nd_fh; /* File handle */ 547 kauth_cred_t nd_cr; /* Credentials */ 548 }; 549 550 /* Bits for "nd_flag" */ 551 #define ND_READ LEASE_READ 552 #define ND_WRITE LEASE_WRITE 553 #define ND_CHECK 0x04 554 #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) 555 #define ND_NFSV3 0x08 556 #define ND_KERBNICK 0x20 557 #define ND_KERBFULL 0x40 558 #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) 559 560 extern kmutex_t nfsd_lock; 561 extern kcondvar_t nfsd_initcv; 562 extern TAILQ_HEAD(nfsdhead, nfsd) nfsd_head; 563 extern SLIST_HEAD(nfsdidlehead, nfsd) nfsd_idle_head; 564 extern int nfsd_head_flag; 565 #define NFSD_CHECKSLP 0x01 566 567 extern struct mowner nfs_mowner; 568 extern struct nfsstats nfsstats; 569 extern int nfs_numasync; 570 571 /* 572 * These macros compare nfsrv_descript structures. 573 */ 574 #define NFSW_CONTIG(o, n) \ 575 ((o)->nd_eoff >= (n)->nd_off && \ 576 !memcmp((void *)&(o)->nd_fh, (void *)&(n)->nd_fh, NFSX_V3FH)) 577 578 /* 579 * Defines for WebNFS 580 */ 581 582 #define WEBNFS_ESC_CHAR '%' 583 #define WEBNFS_SPECCHAR_START 0x80 584 585 #define WEBNFS_NATIVE_CHAR 0x80 586 /* 587 * .. 588 * Possibly more here in the future. 589 */ 590 591 /* 592 * Macro for converting escape characters in WebNFS pathnames. 593 * Should really be in libkern. 594 */ 595 596 #define HEXTOC(c) \ 597 ((c) >= 'a' ? ((c) - ('a' - 10)) : \ 598 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0'))) 599 #define HEXSTRTOI(p) \ 600 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1])) 601 602 /* 603 * Structure holding information for a publicly exported filesystem 604 * (WebNFS). Currently the specs allow just for one such filesystem. 605 */ 606 struct nfs_public { 607 int np_valid; /* Do we hold valid information */ 608 fhandle_t *np_handle; /* Filehandle for pub fs (internal) */ 609 struct mount *np_mount; /* Mountpoint of exported fs */ 610 char *np_index; /* Index file */ 611 }; 612 #endif /* _KERNEL */ 613 614 #endif /* _NFS_NFS_H */ 615