nfs.h revision 1.61
1 /* $NetBSD: nfs.h,v 1.61 2006/12/27 12:10:09 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 /* 40 * Tunable constants for nfs 41 */ 42 43 #define NFS_MAXIOVEC 34 44 #define NFS_TICKINTVL 5 /* Desired time for a tick (msec) */ 45 #define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */ 46 #define NFS_TIMEO (3 * NFS_HZ) /* Default timeout = 3 seconds */ 47 #define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */ 48 #define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */ 49 #define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/ 50 #define NFS_MAXREXMIT 100 /* Stop counting after this many */ 51 #define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */ 52 #define NFS_RETRANS 10 /* Num of retrans for soft mounts */ 53 #define NFS_MAXGRPS 16 /* Max. size of groups list */ 54 #ifndef NFS_MINATTRTIMO 55 #define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */ 56 #endif 57 #ifndef NFS_MAXATTRTIMO 58 #define NFS_MAXATTRTIMO 60 59 #endif 60 #define NFS_TRYLATERDEL 1 /* Initial try later delay (sec) */ 61 #define NFS_TRYLATERDELMAX (1*60) /* Maximum try later delay (sec) */ 62 #define NFS_TRYLATERDELMUL 2 /* Exponential backoff multiplier */ 63 64 /* 65 * These can be overridden through <machine/param.h>, included via 66 * <sys/param.h>. This means that <sys/param.h> should always be 67 * included before this file. 68 */ 69 #ifndef NFS_WSIZE 70 #define NFS_WSIZE 8192 /* Def. write data size */ 71 #endif 72 #ifndef NFS_RSIZE 73 #define NFS_RSIZE 8192 /* Def. read data size */ 74 #endif 75 #ifndef NFS_READDIRSIZE 76 #define NFS_READDIRSIZE 8192 /* Def. readdir size */ 77 #endif 78 79 /* 80 * NFS client IO daemon threads. May be overridden by config options. 81 */ 82 #ifndef NFS_MAXASYNCDAEMON 83 #define NFS_MAXASYNCDAEMON 128 /* Max. number async_daemons runable */ 84 #endif 85 86 /* 87 * NFS client read-ahead. May be overridden by config options. 88 * Should be no more than NFS_MAXASYNCDAEMON as each read-ahead operation 89 * requires one IO thread. 90 */ 91 #ifndef NFS_MAXRAHEAD 92 #define NFS_MAXRAHEAD 32 /* Max. read ahead # blocks */ 93 #endif 94 #define NFS_DEFRAHEAD 2 /* Def. read ahead # blocks */ 95 96 #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */ 97 98 #define NFS_DEFDEADTHRESH NFS_NEVERDEAD /* Default nm_deadthresh */ 99 #define NFS_NEVERDEAD 9 /* Greater than max. nm_timeouts */ 100 101 #ifdef _KERNEL 102 extern int nfs_niothreads; /* Number of async_daemons desired */ 103 #ifndef NFS_DEFAULT_NIOTHREADS 104 #define NFS_DEFAULT_NIOTHREADS 4 105 #endif 106 #endif 107 #define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */ 108 #ifndef NFS_GATHERDELAY 109 #define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */ 110 #endif 111 112 /* 113 * NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for 114 * NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount 115 * of data in those buffers, and thus the minimum amount of data 116 * that you can request. NFS_DIRFRAGSIZ should be no smaller than 117 * DIRBLKSIZ. 118 */ 119 120 #define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */ 121 #define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */ 122 123 /* 124 * Maximum number of directory entries cached per NFS node, to avoid 125 * having this grow without bounds on very large directories. The 126 * minimum size to get reasonable performance for emulated binaries 127 * is the maximum number of entries that fits in NFS_DIRBLKSIZ. 128 * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36. 129 */ 130 #define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14) 131 132 /* 133 * Oddballs 134 */ 135 #define NFS_CMPFH(n, f, s) \ 136 ((n)->n_fhsize == (s) && !memcmp((caddr_t)(n)->n_fhp, (caddr_t)(f), (s))) 137 #ifdef NFS_V2_ONLY 138 #define NFS_ISV3(v) (0) 139 #else 140 #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) 141 #endif 142 #define NFS_SRVMAXDATA(n) \ 143 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ 144 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) 145 146 /* 147 * Use the vm_page flag reserved for pager use to indicate pages 148 * which have been written to the server but not yet committed. 149 */ 150 #define PG_NEEDCOMMIT PG_PAGER1 151 152 /* 153 * The IO_METASYNC flag should be implemented for local file systems. 154 * (Until then, it is nothin at all.) 155 */ 156 #ifndef IO_METASYNC 157 #define IO_METASYNC 0 158 #endif 159 160 /* 161 * Set the attribute timeout based on how recently the file has been modified. 162 */ 163 #define NFS_ATTRTIMEO(nmp, np) \ 164 ((nmp->nm_flag & NFSMNT_NOAC) ? 0 : \ 165 ((((np)->n_flag & NMODIFIED) || \ 166 (time_second - (np)->n_mtime.tv_sec) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \ 167 ((time_second - (np)->n_mtime.tv_sec) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \ 168 (time_second - (np)->n_mtime.tv_sec) / 10))) 169 170 /* 171 * Export arguments for local filesystem mount calls. 172 * Keep in mind that changing this structure modifies nfssvc(2)'s ABI (see 173 * 'struct mountd_exports_list' below). 174 * When modifying this structure, take care to also edit the 175 * nfs_update_exports_30 function in nfs_export.c accordingly to convert 176 * export_args to export_args30. 177 */ 178 struct export_args { 179 int ex_flags; /* export related flags */ 180 uid_t ex_root; /* mapping for root uid */ 181 struct uucred ex_anon; /* mapping for anonymous user */ 182 struct sockaddr *ex_addr; /* net address to which exported */ 183 int ex_addrlen; /* and the net address length */ 184 struct sockaddr *ex_mask; /* mask of valid bits in saddr */ 185 int ex_masklen; /* and the smask length */ 186 char *ex_indexfile; /* index file for WebNFS URLs */ 187 }; 188 189 /* 190 * Structures for the nfssvc(2) syscall. Not that anyone but mountd, nfsd and 191 * mount_nfs should ever try and use it. 192 */ 193 struct nfsd_args { 194 int sock; /* Socket to serve */ 195 caddr_t name; /* Client addr for connection based sockets */ 196 int namelen; /* Length of name */ 197 }; 198 199 struct nfsd_srvargs { 200 struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ 201 uid_t nsd_uid; /* Effective uid mapped to cred */ 202 u_int32_t nsd_haddr; /* Ip address of client */ 203 struct uucred nsd_cr; /* Cred. uid maps to */ 204 int nsd_authlen; /* Length of auth string (ret) */ 205 u_char *nsd_authstr; /* Auth string (ret) */ 206 int nsd_verflen; /* and the verfier */ 207 u_char *nsd_verfstr; 208 struct timeval nsd_timestamp; /* timestamp from verifier */ 209 u_int32_t nsd_ttl; /* credential ttl (sec) */ 210 NFSKERBKEY_T nsd_key; /* Session key */ 211 }; 212 213 struct nfsd_cargs { 214 char *ncd_dirp; /* Mount dir path */ 215 uid_t ncd_authuid; /* Effective uid */ 216 int ncd_authtype; /* Type of authenticator */ 217 u_int ncd_authlen; /* Length of authenticator string */ 218 u_char *ncd_authstr; /* Authenticator string */ 219 u_int ncd_verflen; /* and the verifier */ 220 u_char *ncd_verfstr; 221 NFSKERBKEY_T ncd_key; /* Session key */ 222 }; 223 224 struct mountd_exports_list { 225 const char *mel_path; 226 size_t mel_nexports; 227 struct export_args *mel_exports; 228 }; 229 230 /* 231 * try to keep nfsstats, which is exposed to userland via sysctl, 232 * compatible after NQNFS removal. 233 * 26 is the old value of NFS_NPROCS, which includes NQNFS procedures. 234 */ 235 #define NFSSTATS_NPROCS 26 236 237 /* 238 * Stats structure 239 */ 240 struct nfsstats { 241 int attrcache_hits; 242 int attrcache_misses; 243 int lookupcache_hits; 244 int lookupcache_misses; 245 int direofcache_hits; 246 int direofcache_misses; 247 int biocache_reads; 248 int read_bios; 249 int read_physios; 250 int biocache_writes; 251 int write_bios; 252 int write_physios; 253 int biocache_readlinks; 254 int readlink_bios; 255 int biocache_readdirs; 256 int readdir_bios; 257 int rpccnt[NFSSTATS_NPROCS]; 258 int rpcretries; 259 int srvrpccnt[NFSSTATS_NPROCS]; 260 int srvrpc_errs; 261 int srv_errs; 262 int rpcrequests; 263 int rpctimeouts; 264 int rpcunexpected; 265 int rpcinvalid; 266 int srvcache_inproghits; 267 int srvcache_idemdonehits; 268 int srvcache_nonidemdonehits; 269 int srvcache_misses; 270 int __srvnqnfs_leases; /* unused */ 271 int __srvnqnfs_maxleases; /* unused */ 272 int __srvnqnfs_getleases; /* unused */ 273 int srvvop_writes; 274 }; 275 276 /* 277 * Flags for nfssvc() system call. 278 */ 279 #define NFSSVC_BIOD 0x002 280 #define NFSSVC_NFSD 0x004 281 #define NFSSVC_ADDSOCK 0x008 282 #define NFSSVC_AUTHIN 0x010 283 #define NFSSVC_GOTAUTH 0x040 284 #define NFSSVC_AUTHINFAIL 0x080 285 #define NFSSVC_MNTD 0x100 286 #define NFSSVC_SETEXPORTSLIST 0x200 287 288 /* 289 * fs.nfs sysctl(3) identifiers 290 */ 291 #define NFS_NFSSTATS 1 /* struct: struct nfsstats */ 292 #define NFS_IOTHREADS 2 /* number of io threads */ 293 #define NFS_MAXID 3 294 295 #define NFS_NAMES { \ 296 { 0, 0 }, \ 297 { "nfsstats", CTLTYPE_STRUCT }, \ 298 { "iothreads", CTLTYPE_INT }, \ 299 } 300 301 /* 302 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts. 303 * What should be in this set is open to debate, but I believe that since 304 * I/O system calls on ufs are never interrupted by signals the set should 305 * be minimal. My reasoning is that many current programs that use signals 306 * such as SIGALRM will not expect file I/O system calls to be interrupted 307 * by them and break. 308 */ 309 #ifdef _KERNEL 310 311 struct uio; struct buf; struct vattr; struct nameidata; /* XXX */ 312 313 /* 314 * Socket errors ignored for connectionless sockets?? 315 * For now, ignore them all 316 */ 317 #define NFSIGNORE_SOERROR(s, e) \ 318 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \ 319 ((s) & PR_CONNREQUIRED) == 0) 320 321 /* 322 * Nfs outstanding request list element 323 */ 324 struct nfsreq { 325 TAILQ_ENTRY(nfsreq) r_chain; 326 struct mbuf *r_mreq; 327 struct mbuf *r_mrep; 328 struct mbuf *r_md; 329 caddr_t r_dpos; 330 struct nfsmount *r_nmp; 331 u_int32_t r_xid; 332 int r_flags; /* flags on request, see below */ 333 int r_retry; /* max retransmission count */ 334 int r_rexmit; /* current retrans count */ 335 int r_timer; /* tick counter on reply */ 336 u_int32_t r_procnum; /* NFS procedure number */ 337 int r_rtt; /* RTT for rpc */ 338 struct lwp *r_lwp; /* LWP that did I/O system call */ 339 }; 340 341 /* 342 * Queue head for nfsreq's 343 */ 344 extern TAILQ_HEAD(nfsreqhead, nfsreq) nfs_reqq; 345 346 /* Flag values for r_flags */ 347 #define R_TIMING 0x01 /* timing request (in mntp) */ 348 #define R_SENT 0x02 /* request has been sent */ 349 #define R_SOFTTERM 0x04 /* soft mnt, too many retries */ 350 #define R_INTR 0x08 /* intr mnt, signal pending */ 351 #define R_SOCKERR 0x10 /* Fatal error on socket */ 352 #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ 353 #define R_MUSTRESEND 0x40 /* Must resend request */ 354 #define R_GETONEREP 0x80 /* Probe for one reply only */ 355 #define R_REXMITTED 0x100 /* retransmitted after reconnect */ 356 357 /* 358 * A list of nfssvc_sock structures is maintained with all the sockets 359 * that require service by the nfsd. 360 * The nfsuid structs hang off of the nfssvc_sock structs in both lru 361 * and uid hash lists. 362 */ 363 #ifndef NFS_UIDHASHSIZ 364 #define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */ 365 #endif 366 #define NUIDHASH(sock, uid) \ 367 (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ]) 368 #ifndef NFS_WDELAYHASHSIZ 369 #define NFS_WDELAYHASHSIZ 16 /* and with this */ 370 #endif 371 #ifndef NFS_MUIDHASHSIZ 372 #define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */ 373 #endif 374 #define NMUIDHASH(nmp, uid) \ 375 (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ]) 376 #define NFSNOHASH(fhsum) ((fhsum) & nfsnodehash) 377 378 #ifndef NFS_DIRHASHSIZ 379 #define NFS_DIRHASHSIZ 64 380 #endif 381 #define NFSDIRHASH(np, off) \ 382 (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)]) 383 384 /* 385 * Macros for storing/retrieving cookies into directory buffers. 386 */ 387 #define NFS_STASHCOOKIE(dp,off) \ 388 *((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t))) = off 389 #define NFS_GETCOOKIE(dp) \ 390 (*((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t)))) 391 #define NFS_STASHCOOKIE32(dp, val) \ 392 *((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 393 sizeof (int))) = val 394 #define NFS_GETCOOKIE32(dp) \ 395 (*((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 396 sizeof (int)))) 397 398 /* 399 * Flags passed to nfs_bioread(). 400 */ 401 #define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */ 402 403 /* 404 * Network address hash list element 405 */ 406 union nethostaddr { 407 u_int32_t had_inetaddr; 408 struct mbuf *had_nam; 409 }; 410 411 struct nfsuid { 412 TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */ 413 LIST_ENTRY(nfsuid) nu_hash; /* Hash list */ 414 int nu_flag; /* Flags */ 415 union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ 416 kauth_cred_t nu_cr; /* Cred uid mapped to */ 417 int nu_expire; /* Expiry time (sec) */ 418 struct timeval nu_timestamp; /* Kerb. timestamp */ 419 u_int32_t nu_nickname; /* Nickname on server */ 420 NFSKERBKEY_T nu_key; /* and session key */ 421 }; 422 423 #define nu_inetaddr nu_haddr.had_inetaddr 424 #define nu_nam nu_haddr.had_nam 425 /* Bits for nu_flag */ 426 #define NU_INETADDR 0x1 427 #define NU_NAM 0x2 428 #ifdef INET6 429 #define NU_NETFAM(u) \ 430 (((u)->nu_flag & NU_INETADDR) ? \ 431 (((u)->nu_flag & NU_NAM) ? AF_INET6 : AF_INET) : AF_ISO) 432 #else 433 #define NU_NETFAM(u) (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_ISO) 434 #endif 435 436 struct nfssvc_sock { 437 struct simplelock ns_lock; 438 TAILQ_ENTRY(nfssvc_sock) ns_chain; /* List of all nfssvc_sock's */ 439 TAILQ_ENTRY(nfssvc_sock) ns_pending; /* List of pending sockets */ 440 TAILQ_HEAD(, nfsuid) ns_uidlruhead; 441 struct file *ns_fp; 442 struct socket *ns_so; 443 struct mbuf *ns_nam; 444 struct mbuf *ns_raw; 445 struct mbuf *ns_rawend; 446 struct mbuf *ns_rec; 447 struct mbuf *ns_recend; 448 struct mbuf *ns_frag; 449 int ns_flag; 450 int ns_solock; 451 int ns_cc; 452 int ns_reclen; 453 int ns_numuids; 454 u_int32_t ns_sref; 455 SIMPLEQ_HEAD(, nfsrv_descript) ns_sendq; /* send reply list */ 456 LIST_HEAD(, nfsrv_descript) ns_tq; /* Write gather lists */ 457 LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ]; 458 LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; 459 }; 460 461 /* Bits for "ns_flag" */ 462 #define SLP_VALID 0x01 463 #define SLP_DOREC 0x02 /* on nfssvc_sockpending queue */ 464 #define SLP_NEEDQ 0x04 465 #define SLP_DISCONN 0x08 466 #define SLP_BUSY 0x10 467 #define SLP_WANT 0x20 468 #define SLP_LASTFRAG 0x40 469 #define SLP_SENDING 0x80 470 471 extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead; 472 extern struct nfssvc_sockhead nfssvc_sockpending; 473 extern int nfssvc_sockhead_flag; 474 #define SLP_INIT 0x01 475 #define SLP_WANTINIT 0x02 476 477 /* 478 * One of these structures is allocated for each nfsd. 479 */ 480 struct nfsd { 481 TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */ 482 SLIST_ENTRY(nfsd) nfsd_idle; /* List of idle nfsd's */ 483 int nfsd_flag; /* NFSD_ flags */ 484 struct nfssvc_sock *nfsd_slp; /* Current socket */ 485 int nfsd_authlen; /* Authenticator len */ 486 u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ 487 int nfsd_verflen; /* and the Verifier */ 488 u_char nfsd_verfstr[RPCVERF_MAXSIZ]; 489 struct proc *nfsd_procp; /* Proc ptr */ 490 struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ 491 }; 492 493 /* Bits for "nfsd_flag" */ 494 #define NFSD_NEEDAUTH 0x04 495 #define NFSD_AUTHFAIL 0x08 496 497 #define NFSD_MAXFHSIZE 64 498 typedef struct nfsrvfh { 499 size_t nsfh_size; 500 union { 501 fhandle_t u_fh; 502 uint8_t u_opaque[NFSD_MAXFHSIZE]; 503 } nsfh_u; 504 } nfsrvfh_t; 505 #define NFSRVFH_SIZE(nsfh) ((nsfh)->nsfh_size) 506 #define NFSRVFH_DATA(nsfh) ((nsfh)->nsfh_u.u_opaque) 507 #define NFSRVFH_FHANDLE(nsfh) (&(nsfh)->nsfh_u.u_fh) 508 509 /* 510 * This structure is used by the server for describing each request. 511 * Some fields are used only when write request gathering is performed. 512 */ 513 struct nfsrv_descript { 514 u_quad_t nd_time; /* Write deadline (usec) */ 515 off_t nd_off; /* Start byte offset */ 516 off_t nd_eoff; /* and end byte offset */ 517 LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ 518 LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ 519 LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ 520 SIMPLEQ_ENTRY(nfsrv_descript) nd_sendq; /* send reply list */ 521 struct mbuf *nd_mrep; /* Request mbuf list */ 522 struct mbuf *nd_md; /* Current dissect mbuf */ 523 struct mbuf *nd_mreq; /* Reply mbuf list */ 524 struct mbuf *nd_nam; /* and socket addr */ 525 struct mbuf *nd_nam2; /* return socket addr */ 526 caddr_t nd_dpos; /* Current dissect pos */ 527 u_int32_t nd_procnum; /* RPC # */ 528 int nd_stable; /* storage type */ 529 int nd_flag; /* nd_flag */ 530 int nd_len; /* Length of this write */ 531 int nd_repstat; /* Reply status */ 532 u_int32_t nd_retxid; /* Reply xid */ 533 u_int32_t nd_duration; /* Lease duration */ 534 struct timeval nd_starttime; /* Time RPC initiated */ 535 nfsrvfh_t nd_fh; /* File handle */ 536 kauth_cred_t nd_cr; /* Credentials */ 537 }; 538 539 /* Bits for "nd_flag" */ 540 #define ND_READ LEASE_READ 541 #define ND_WRITE LEASE_WRITE 542 #define ND_CHECK 0x04 543 #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) 544 #define ND_NFSV3 0x08 545 #define ND_NQNFS 0x10 546 #define ND_KERBNICK 0x20 547 #define ND_KERBFULL 0x40 548 #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) 549 550 extern struct simplelock nfsd_slock; 551 extern TAILQ_HEAD(nfsdhead, nfsd) nfsd_head; 552 extern SLIST_HEAD(nfsdidlehead, nfsd) nfsd_idle_head; 553 extern int nfsd_head_flag; 554 #define NFSD_CHECKSLP 0x01 555 556 extern struct mowner nfs_mowner; 557 extern struct nfsstats nfsstats; 558 extern int nfs_numasync; 559 560 /* 561 * These macros compare nfsrv_descript structures. 562 */ 563 #define NFSW_CONTIG(o, n) \ 564 ((o)->nd_eoff >= (n)->nd_off && \ 565 !memcmp((caddr_t)&(o)->nd_fh, (caddr_t)&(n)->nd_fh, NFSX_V3FH)) 566 567 /* 568 * Defines for WebNFS 569 */ 570 571 #define WEBNFS_ESC_CHAR '%' 572 #define WEBNFS_SPECCHAR_START 0x80 573 574 #define WEBNFS_NATIVE_CHAR 0x80 575 /* 576 * .. 577 * Possibly more here in the future. 578 */ 579 580 /* 581 * Macro for converting escape characters in WebNFS pathnames. 582 * Should really be in libkern. 583 */ 584 585 #define HEXTOC(c) \ 586 ((c) >= 'a' ? ((c) - ('a' - 10)) : \ 587 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0'))) 588 #define HEXSTRTOI(p) \ 589 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1])) 590 591 /* 592 * Structure holding information for a publicly exported filesystem 593 * (WebNFS). Currently the specs allow just for one such filesystem. 594 */ 595 struct nfs_public { 596 int np_valid; /* Do we hold valid information */ 597 fhandle_t *np_handle; /* Filehandle for pub fs (internal) */ 598 struct mount *np_mount; /* Mountpoint of exported fs */ 599 char *np_index; /* Index file */ 600 }; 601 #endif /* _KERNEL */ 602 603 #endif /* _NFS_NFS_H */ 604
Indexes created Sat Sep 27 21:09:56 GMT 2025