nfs.h revision 1.63.2.3
1 /* $NetBSD: nfs.h,v 1.63.2.3 2007/08/26 15:00:04 yamt 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 * Set the attribute timeout based on how recently the file has been modified. 169 */ 170 #define NFS_ATTRTIMEO(nmp, np) \ 171 ((nmp->nm_flag & NFSMNT_NOAC) ? 0 : \ 172 ((((np)->n_flag & NMODIFIED) || \ 173 (time_second - (np)->n_mtime.tv_sec) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \ 174 ((time_second - (np)->n_mtime.tv_sec) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \ 175 (time_second - (np)->n_mtime.tv_sec) / 10))) 176 177 /* 178 * Export arguments for local filesystem mount calls. 179 * Keep in mind that changing this structure modifies nfssvc(2)'s ABI (see 180 * 'struct mountd_exports_list' below). 181 * When modifying this structure, take care to also edit the 182 * nfs_update_exports_30 function in nfs_export.c accordingly to convert 183 * export_args to export_args30. 184 */ 185 struct export_args { 186 int ex_flags; /* export related flags */ 187 uid_t ex_root; /* mapping for root uid */ 188 struct uucred ex_anon; /* mapping for anonymous user */ 189 struct sockaddr *ex_addr; /* net address to which exported */ 190 int ex_addrlen; /* and the net address length */ 191 struct sockaddr *ex_mask; /* mask of valid bits in saddr */ 192 int ex_masklen; /* and the smask length */ 193 char *ex_indexfile; /* index file for WebNFS URLs */ 194 }; 195 196 /* 197 * Structures for the nfssvc(2) syscall. Not that anyone but mountd, nfsd and 198 * mount_nfs should ever try and use it. 199 */ 200 struct nfsd_args { 201 int sock; /* Socket to serve */ 202 void * name; /* Client addr for connection based sockets */ 203 int namelen; /* Length of name */ 204 }; 205 206 struct nfsd_srvargs { 207 struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ 208 uid_t nsd_uid; /* Effective uid mapped to cred */ 209 u_int32_t nsd_haddr; /* Ip address of client */ 210 struct uucred nsd_cr; /* Cred. uid maps to */ 211 int nsd_authlen; /* Length of auth string (ret) */ 212 u_char *nsd_authstr; /* Auth string (ret) */ 213 int nsd_verflen; /* and the verfier */ 214 u_char *nsd_verfstr; 215 struct timeval nsd_timestamp; /* timestamp from verifier */ 216 u_int32_t nsd_ttl; /* credential ttl (sec) */ 217 NFSKERBKEY_T nsd_key; /* Session key */ 218 }; 219 220 struct nfsd_cargs { 221 char *ncd_dirp; /* Mount dir path */ 222 uid_t ncd_authuid; /* Effective uid */ 223 int ncd_authtype; /* Type of authenticator */ 224 u_int ncd_authlen; /* Length of authenticator string */ 225 u_char *ncd_authstr; /* Authenticator string */ 226 u_int ncd_verflen; /* and the verifier */ 227 u_char *ncd_verfstr; 228 NFSKERBKEY_T ncd_key; /* Session key */ 229 }; 230 231 struct mountd_exports_list { 232 const char *mel_path; 233 size_t mel_nexports; 234 struct export_args *mel_exports; 235 }; 236 237 /* 238 * try to keep nfsstats, which is exposed to userland via sysctl, 239 * compatible after NQNFS removal. 240 * 26 is the old value of NFS_NPROCS, which includes NQNFS procedures. 241 */ 242 #define NFSSTATS_NPROCS 26 243 244 /* 245 * Stats structure 246 */ 247 struct nfsstats { 248 int attrcache_hits; 249 int attrcache_misses; 250 int lookupcache_hits; 251 int lookupcache_misses; 252 int direofcache_hits; 253 int direofcache_misses; 254 int biocache_reads; 255 int read_bios; 256 int read_physios; 257 int biocache_writes; 258 int write_bios; 259 int write_physios; 260 int biocache_readlinks; 261 int readlink_bios; 262 int biocache_readdirs; 263 int readdir_bios; 264 int rpccnt[NFSSTATS_NPROCS]; 265 int rpcretries; 266 int srvrpccnt[NFSSTATS_NPROCS]; 267 int srvrpc_errs; 268 int srv_errs; 269 int rpcrequests; 270 int rpctimeouts; 271 int rpcunexpected; 272 int rpcinvalid; 273 int srvcache_inproghits; 274 int srvcache_idemdonehits; 275 int srvcache_nonidemdonehits; 276 int srvcache_misses; 277 int __srvnqnfs_leases; /* unused */ 278 int __srvnqnfs_maxleases; /* unused */ 279 int __srvnqnfs_getleases; /* unused */ 280 int srvvop_writes; 281 }; 282 283 /* 284 * Flags for nfssvc() system call. 285 */ 286 #define NFSSVC_BIOD 0x002 287 #define NFSSVC_NFSD 0x004 288 #define NFSSVC_ADDSOCK 0x008 289 #define NFSSVC_AUTHIN 0x010 290 #define NFSSVC_GOTAUTH 0x040 291 #define NFSSVC_AUTHINFAIL 0x080 292 #define NFSSVC_MNTD 0x100 293 #define NFSSVC_SETEXPORTSLIST 0x200 294 295 /* 296 * fs.nfs sysctl(3) identifiers 297 */ 298 #define NFS_NFSSTATS 1 /* struct: struct nfsstats */ 299 #define NFS_IOTHREADS 2 /* number of io threads */ 300 #define NFS_MAXID 3 301 302 #define NFS_NAMES { \ 303 { 0, 0 }, \ 304 { "nfsstats", CTLTYPE_STRUCT }, \ 305 { "iothreads", CTLTYPE_INT }, \ 306 } 307 308 /* 309 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts. 310 * What should be in this set is open to debate, but I believe that since 311 * I/O system calls on ufs are never interrupted by signals the set should 312 * be minimal. My reasoning is that many current programs that use signals 313 * such as SIGALRM will not expect file I/O system calls to be interrupted 314 * by them and break. 315 */ 316 #ifdef _KERNEL 317 318 struct uio; struct buf; struct vattr; struct nameidata; /* XXX */ 319 320 /* 321 * Socket errors ignored for connectionless sockets?? 322 * For now, ignore them all 323 */ 324 #define NFSIGNORE_SOERROR(s, e) \ 325 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \ 326 ((s) & PR_CONNREQUIRED) == 0) 327 328 /* 329 * Nfs outstanding request list element 330 */ 331 struct nfsreq { 332 TAILQ_ENTRY(nfsreq) r_chain; 333 struct mbuf *r_mreq; 334 struct mbuf *r_mrep; 335 struct mbuf *r_md; 336 void * r_dpos; 337 struct nfsmount *r_nmp; 338 u_int32_t r_xid; 339 int r_flags; /* flags on request, see below */ 340 int r_retry; /* max retransmission count */ 341 int r_rexmit; /* current retrans count */ 342 int r_timer; /* tick counter on reply */ 343 u_int32_t r_procnum; /* NFS procedure number */ 344 int r_rtt; /* RTT for rpc */ 345 struct lwp *r_lwp; /* LWP that did I/O system call */ 346 }; 347 348 /* 349 * Queue head for nfsreq's 350 */ 351 extern TAILQ_HEAD(nfsreqhead, nfsreq) nfs_reqq; 352 353 /* Flag values for r_flags */ 354 #define R_TIMING 0x01 /* timing request (in mntp) */ 355 #define R_SENT 0x02 /* request has been sent */ 356 #define R_SOFTTERM 0x04 /* soft mnt, too many retries */ 357 #define R_INTR 0x08 /* intr mnt, signal pending */ 358 #define R_SOCKERR 0x10 /* Fatal error on socket */ 359 #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ 360 #define R_MUSTRESEND 0x40 /* Must resend request */ 361 #define R_REXMITTED 0x100 /* retransmitted after reconnect */ 362 363 /* 364 * A list of nfssvc_sock structures is maintained with all the sockets 365 * that require service by the nfsd. 366 * The nfsuid structs hang off of the nfssvc_sock structs in both lru 367 * and uid hash lists. 368 */ 369 #ifndef NFS_UIDHASHSIZ 370 #define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */ 371 #endif 372 #define NUIDHASH(sock, uid) \ 373 (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ]) 374 #ifndef NFS_WDELAYHASHSIZ 375 #define NFS_WDELAYHASHSIZ 16 /* and with this */ 376 #endif 377 #ifndef NFS_MUIDHASHSIZ 378 #define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */ 379 #endif 380 #define NMUIDHASH(nmp, uid) \ 381 (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ]) 382 #define NFSNOHASH(fhsum) ((fhsum) & nfsnodehash) 383 384 #ifndef NFS_DIRHASHSIZ 385 #define NFS_DIRHASHSIZ 64 386 #endif 387 #define NFSDIRHASH(np, off) \ 388 (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)]) 389 390 /* 391 * Macros for storing/retrieving cookies into directory buffers. 392 */ 393 #define NFS_STASHCOOKIE(dp,off) \ 394 *((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t))) = off 395 #define NFS_GETCOOKIE(dp) \ 396 (*((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t)))) 397 #define NFS_STASHCOOKIE32(dp, val) \ 398 *((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 399 sizeof (int))) = val 400 #define NFS_GETCOOKIE32(dp) \ 401 (*((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 402 sizeof (int)))) 403 404 /* 405 * Flags passed to nfs_bioread(). 406 */ 407 #define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */ 408 409 /* 410 * Network address hash list element 411 */ 412 union nethostaddr { 413 u_int32_t had_inetaddr; 414 struct mbuf *had_nam; 415 }; 416 417 struct nfsuid { 418 TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */ 419 LIST_ENTRY(nfsuid) nu_hash; /* Hash list */ 420 int nu_flag; /* Flags */ 421 union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ 422 kauth_cred_t nu_cr; /* Cred uid mapped to */ 423 int nu_expire; /* Expiry time (sec) */ 424 struct timeval nu_timestamp; /* Kerb. timestamp */ 425 u_int32_t nu_nickname; /* Nickname on server */ 426 NFSKERBKEY_T nu_key; /* and session key */ 427 }; 428 429 #define nu_inetaddr nu_haddr.had_inetaddr 430 #define nu_nam nu_haddr.had_nam 431 /* Bits for nu_flag */ 432 #define NU_INETADDR 0x1 433 #define NU_NAM 0x2 434 #ifdef INET6 435 #define NU_NETFAM(u) \ 436 (((u)->nu_flag & NU_INETADDR) ? \ 437 (((u)->nu_flag & NU_NAM) ? AF_INET6 : AF_INET) : AF_ISO) 438 #else 439 #define NU_NETFAM(u) (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_ISO) 440 #endif 441 442 /* 443 * b: protected by SLP_BUSY 444 * g: protected by nfsd_lock 445 * s: protected by ns_lock 446 * a: protected by ns_alock 447 */ 448 449 struct nfssvc_sock { 450 kmutex_t ns_lock; 451 kmutex_t ns_alock; 452 kcondvar_t ns_cv; /* s: */ 453 TAILQ_ENTRY(nfssvc_sock) ns_chain; /* g: List of all nfssvc_sock */ 454 TAILQ_ENTRY(nfssvc_sock) ns_pending; /* g: List of pending sockets */ 455 TAILQ_HEAD(, nfsuid) ns_uidlruhead; 456 struct file *ns_fp; 457 struct socket *ns_so; 458 struct mbuf *ns_nam; 459 struct mbuf *ns_raw; /* b: */ 460 struct mbuf *ns_rawend; /* b: */ 461 struct mbuf *ns_rec; /* b: */ 462 struct mbuf *ns_recend; /* b: */ 463 struct mbuf *ns_frag; /* b: */ 464 int ns_flags; /* s: */ 465 int ns_aflags; /* a: */ 466 int ns_gflags; /* g: */ 467 int ns_sflags; /* b: */ 468 int ns_cc; /* b: */ 469 int ns_reclen; /* b: */ 470 int ns_numuids; 471 u_int32_t ns_sref; /* g: */ 472 SIMPLEQ_HEAD(, nfsrv_descript) ns_sendq; /* s: send reply list */ 473 LIST_HEAD(, nfsrv_descript) ns_tq; /* g: Write gather lists */ 474 LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ]; 475 LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; /* g: */ 476 }; 477 478 /* Bits for "ns_flags" */ 479 #define SLP_VALID 0x01 480 #define SLP_BUSY 0x10 481 #define SLP_SENDING 0x80 482 483 /* Bits for "ns_aflags" */ 484 #define SLP_A_NEEDQ 0x01 485 #define SLP_A_DISCONN 0x04 486 487 /* Bits for "ns_gflags" */ 488 #define SLP_G_DOREC 0x02 /* on nfssvc_sockpending queue */ 489 490 /* Bits for "ns_sflags" */ 491 #define SLP_S_LASTFRAG 0x40 492 493 extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead; 494 extern struct nfssvc_sockhead nfssvc_sockpending; 495 extern int nfssvc_sockhead_flag; 496 #define SLP_INIT 0x01 497 498 /* 499 * One of these structures is allocated for each nfsd. 500 */ 501 struct nfsd { 502 TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */ 503 SLIST_ENTRY(nfsd) nfsd_idle; /* List of idle nfsd's */ 504 kcondvar_t nfsd_cv; 505 int nfsd_flag; /* NFSD_ flags */ 506 struct nfssvc_sock *nfsd_slp; /* Current socket */ 507 int nfsd_authlen; /* Authenticator len */ 508 u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ 509 int nfsd_verflen; /* and the Verifier */ 510 u_char nfsd_verfstr[RPCVERF_MAXSIZ]; 511 struct proc *nfsd_procp; /* Proc ptr */ 512 struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ 513 }; 514 515 /* Bits for "nfsd_flag" */ 516 #define NFSD_NEEDAUTH 0x04 517 #define NFSD_AUTHFAIL 0x08 518 519 #define NFSD_MAXFHSIZE 64 520 typedef struct nfsrvfh { 521 size_t nsfh_size; 522 union { 523 fhandle_t u_fh; 524 uint8_t u_opaque[NFSD_MAXFHSIZE]; 525 } nsfh_u; 526 } nfsrvfh_t; 527 #define NFSRVFH_SIZE(nsfh) ((nsfh)->nsfh_size) 528 #define NFSRVFH_DATA(nsfh) ((nsfh)->nsfh_u.u_opaque) 529 #define NFSRVFH_FHANDLE(nsfh) (&(nsfh)->nsfh_u.u_fh) 530 531 /* 532 * This structure is used by the server for describing each request. 533 * Some fields are used only when write request gathering is performed. 534 */ 535 struct nfsrv_descript { 536 u_quad_t nd_time; /* Write deadline (usec) */ 537 off_t nd_off; /* Start byte offset */ 538 off_t nd_eoff; /* and end byte offset */ 539 LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ 540 LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ 541 LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ 542 SIMPLEQ_ENTRY(nfsrv_descript) nd_sendq; /* send reply list */ 543 struct mbuf *nd_mrep; /* Request mbuf list */ 544 struct mbuf *nd_md; /* Current dissect mbuf */ 545 struct mbuf *nd_mreq; /* Reply mbuf list */ 546 struct mbuf *nd_nam; /* and socket addr */ 547 struct mbuf *nd_nam2; /* return socket addr */ 548 void * nd_dpos; /* Current dissect pos */ 549 u_int32_t nd_procnum; /* RPC # */ 550 int nd_stable; /* storage type */ 551 int nd_flag; /* nd_flag */ 552 int nd_len; /* Length of this write */ 553 int nd_repstat; /* Reply status */ 554 u_int32_t nd_retxid; /* Reply xid */ 555 u_int32_t nd_duration; /* Lease duration */ 556 struct timeval nd_starttime; /* Time RPC initiated */ 557 nfsrvfh_t nd_fh; /* File handle */ 558 kauth_cred_t nd_cr; /* Credentials */ 559 }; 560 561 /* Bits for "nd_flag" */ 562 #define ND_READ LEASE_READ 563 #define ND_WRITE LEASE_WRITE 564 #define ND_CHECK 0x04 565 #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) 566 #define ND_NFSV3 0x08 567 #define ND_KERBNICK 0x20 568 #define ND_KERBFULL 0x40 569 #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) 570 571 extern kmutex_t nfsd_lock; 572 extern kcondvar_t nfsd_initcv; 573 extern TAILQ_HEAD(nfsdhead, nfsd) nfsd_head; 574 extern SLIST_HEAD(nfsdidlehead, nfsd) nfsd_idle_head; 575 extern int nfsd_head_flag; 576 #define NFSD_CHECKSLP 0x01 577 578 extern struct mowner nfs_mowner; 579 extern struct nfsstats nfsstats; 580 extern int nfs_numasync; 581 582 /* 583 * These macros compare nfsrv_descript structures. 584 */ 585 #define NFSW_CONTIG(o, n) \ 586 ((o)->nd_eoff >= (n)->nd_off && \ 587 !memcmp((void *)&(o)->nd_fh, (void *)&(n)->nd_fh, NFSX_V3FH)) 588 589 /* 590 * Defines for WebNFS 591 */ 592 593 #define WEBNFS_ESC_CHAR '%' 594 #define WEBNFS_SPECCHAR_START 0x80 595 596 #define WEBNFS_NATIVE_CHAR 0x80 597 /* 598 * .. 599 * Possibly more here in the future. 600 */ 601 602 /* 603 * Macro for converting escape characters in WebNFS pathnames. 604 * Should really be in libkern. 605 */ 606 607 #define HEXTOC(c) \ 608 ((c) >= 'a' ? ((c) - ('a' - 10)) : \ 609 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0'))) 610 #define HEXSTRTOI(p) \ 611 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1])) 612 613 /* 614 * Structure holding information for a publicly exported filesystem 615 * (WebNFS). Currently the specs allow just for one such filesystem. 616 */ 617 struct nfs_public { 618 int np_valid; /* Do we hold valid information */ 619 fhandle_t *np_handle; /* Filehandle for pub fs (internal) */ 620 struct mount *np_mount; /* Mountpoint of exported fs */ 621 char *np_index; /* Index file */ 622 }; 623 #endif /* _KERNEL */ 624 625 #endif /* _NFS_NFS_H */ 626
Indexes created Mon Oct 20 11:09:49 GMT 2025