nfs.h revision 1.76
1 /* $NetBSD: nfs.h,v 1.76 2018/01/21 20:36:49 christos 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 #define NFS_CWNDSCALE 256 72 #define NFS_MAXCWND (NFS_CWNDSCALE * 32) 73 74 /* 75 * These can be overridden through <machine/param.h>, included via 76 * <sys/param.h>. This means that <sys/param.h> should always be 77 * included before this file. 78 */ 79 #ifndef NFS_WSIZE 80 #define NFS_WSIZE 8192 /* Def. write data size */ 81 #endif 82 #ifndef NFS_RSIZE 83 #define NFS_RSIZE 8192 /* Def. read data size */ 84 #endif 85 #ifndef NFS_READDIRSIZE 86 #define NFS_READDIRSIZE 8192 /* Def. readdir size */ 87 #endif 88 89 /* 90 * NFS client IO daemon threads. May be overridden by config options. 91 */ 92 #ifndef NFS_MAXASYNCDAEMON 93 #define NFS_MAXASYNCDAEMON 128 /* Max. number async_daemons runable */ 94 #endif 95 96 /* 97 * NFS client read-ahead. May be overridden by config options. 98 * Should be no more than NFS_MAXASYNCDAEMON as each read-ahead operation 99 * requires one IO thread. 100 */ 101 #ifndef NFS_MAXRAHEAD 102 #define NFS_MAXRAHEAD 32 /* Max. read ahead # blocks */ 103 #endif 104 #define NFS_DEFRAHEAD 2 /* Def. read ahead # blocks */ 105 106 #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */ 107 108 #define NFS_DEFDEADTHRESH NFS_NEVERDEAD /* Default nm_deadthresh */ 109 #define NFS_NEVERDEAD 9 /* Greater than max. nm_timeouts */ 110 111 #ifdef _KERNEL 112 extern int nfs_niothreads; /* Number of async_daemons desired */ 113 #ifndef NFS_DEFAULT_NIOTHREADS 114 #define NFS_DEFAULT_NIOTHREADS 4 115 #endif 116 #endif 117 #define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */ 118 #ifndef NFS_GATHERDELAY 119 #define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */ 120 #endif 121 122 /* 123 * NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for 124 * NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount 125 * of data in those buffers, and thus the minimum amount of data 126 * that you can request. NFS_DIRFRAGSIZ should be no smaller than 127 * DIRBLKSIZ. 128 */ 129 130 #define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */ 131 #define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */ 132 133 /* 134 * Maximum number of directory entries cached per NFS node, to avoid 135 * having this grow without bounds on very large directories. The 136 * minimum size to get reasonable performance for emulated binaries 137 * is the maximum number of entries that fits in NFS_DIRBLKSIZ. 138 * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36. 139 */ 140 #define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14) 141 142 /* 143 * Oddballs 144 */ 145 #define NFS_CMPFH(n, f, s) \ 146 ((n)->n_fhsize == (s) && !memcmp((void *)(n)->n_fhp, (void *)(f), (s))) 147 #ifdef NFS_V2_ONLY 148 #define NFS_ISV3(v) (0) 149 #else 150 #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) 151 #endif 152 #define NFS_SRVMAXDATA(n) \ 153 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ 154 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) 155 156 /* 157 * Use the vm_page flag reserved for pager use to indicate pages 158 * which have been written to the server but not yet committed. 159 */ 160 #define PG_NEEDCOMMIT PG_PAGER1 161 162 /* 163 * The IO_METASYNC flag should be implemented for local file systems. 164 * (Until then, it is nothin at all.) 165 */ 166 #ifndef IO_METASYNC 167 #define IO_METASYNC 0 168 #endif 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 void * 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 uint32_t attrcache_hits; 242 uint32_t attrcache_misses; 243 uint32_t lookupcache_hits; 244 uint32_t lookupcache_misses; 245 uint32_t direofcache_hits; 246 uint32_t direofcache_misses; 247 uint32_t biocache_reads; 248 uint32_t read_bios; 249 uint32_t read_physios; 250 uint32_t biocache_writes; 251 uint32_t write_bios; 252 uint32_t write_physios; 253 uint32_t biocache_readlinks; 254 uint32_t readlink_bios; 255 uint32_t biocache_readdirs; 256 uint32_t readdir_bios; 257 uint32_t rpccnt[NFSSTATS_NPROCS]; 258 uint32_t rpcretries; 259 uint32_t srvrpccnt[NFSSTATS_NPROCS]; 260 uint32_t srvrpc_errs; 261 uint32_t srv_errs; 262 uint32_t rpcrequests; 263 uint32_t rpctimeouts; 264 uint32_t rpcunexpected; 265 uint32_t rpcinvalid; 266 uint32_t srvcache_inproghits; 267 uint32_t srvcache_idemdonehits; 268 uint32_t srvcache_nonidemdonehits; 269 uint32_t srvcache_misses; 270 uint32_t __srvnqnfs_leases; /* unused */ 271 uint32_t __srvnqnfs_maxleases; /* unused */ 272 uint32_t __srvnqnfs_getleases; /* unused */ 273 uint32_t 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 void * 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 u_int32_t r_procnum; /* NFS procedure number */ 336 int r_rtt; /* RTT for rpc */ 337 struct lwp *r_lwp; /* LWP that did I/O system call */ 338 }; 339 340 /* 341 * Queue head for nfsreq's 342 */ 343 extern TAILQ_HEAD(nfsreqhead, nfsreq) nfs_reqq; 344 extern kmutex_t nfs_reqq_lock; 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_REXMITTED 0x100 /* retransmitted after reconnect */ 355 356 /* 357 * A list of nfssvc_sock structures is maintained with all the sockets 358 * that require service by the nfsd. 359 * The nfsuid structs hang off of the nfssvc_sock structs in both lru 360 * and uid hash lists. 361 */ 362 #ifndef NFS_UIDHASHSIZ 363 #define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */ 364 #endif 365 #define NUIDHASH(sock, uid) \ 366 (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ]) 367 #ifndef NFS_WDELAYHASHSIZ 368 #define NFS_WDELAYHASHSIZ 16 /* and with this */ 369 #endif 370 #ifndef NFS_MUIDHASHSIZ 371 #define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */ 372 #endif 373 #define NMUIDHASH(nmp, uid) \ 374 (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ]) 375 376 #ifndef NFS_DIRHASHSIZ 377 #define NFS_DIRHASHSIZ 64 378 #endif 379 #define NFSDIRHASH(np, off) \ 380 (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)]) 381 382 /* 383 * Macros for storing/retrieving cookies into directory buffers. 384 */ 385 #define NFS_STASHCOOKIE(dp,off) \ 386 *((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t))) = off 387 #define NFS_GETCOOKIE(dp) \ 388 (*((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t)))) 389 #define NFS_STASHCOOKIE32(dp, val) \ 390 *((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 391 sizeof (int))) = val 392 #define NFS_GETCOOKIE32(dp) \ 393 (*((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 394 sizeof (int)))) 395 396 /* 397 * Flags passed to nfs_bioread(). 398 */ 399 #define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */ 400 401 /* 402 * Network address hash list element 403 */ 404 union nethostaddr { 405 u_int32_t had_inetaddr; 406 struct mbuf *had_nam; 407 }; 408 409 struct nfsuid { 410 TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */ 411 LIST_ENTRY(nfsuid) nu_hash; /* Hash list */ 412 int nu_flag; /* Flags */ 413 union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ 414 kauth_cred_t nu_cr; /* Cred uid mapped to */ 415 int nu_expire; /* Expiry time (sec) */ 416 struct timeval nu_timestamp; /* Kerb. timestamp */ 417 u_int32_t nu_nickname; /* Nickname on server */ 418 NFSKERBKEY_T nu_key; /* and session key */ 419 }; 420 421 #define nu_inetaddr nu_haddr.had_inetaddr 422 #define nu_nam nu_haddr.had_nam 423 /* Bits for nu_flag */ 424 #define NU_INETADDR 0x1 425 #define NU_NAM 0x2 426 #define NU_NETFAM(u) \ 427 (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_INET6) 428 429 /* 430 * b: protected by SLP_BUSY 431 * g: protected by nfsd_lock 432 * s: protected by ns_lock 433 * a: protected by ns_alock 434 */ 435 436 struct nfssvc_sock { 437 kmutex_t ns_lock; 438 kmutex_t ns_alock; 439 kcondvar_t ns_cv; /* s: */ 440 TAILQ_ENTRY(nfssvc_sock) ns_chain; /* g: List of all nfssvc_sock */ 441 TAILQ_ENTRY(nfssvc_sock) ns_pending; /* g: List of pending sockets */ 442 TAILQ_HEAD(, nfsuid) ns_uidlruhead; 443 struct file *ns_fp; 444 struct socket *ns_so; 445 struct mbuf *ns_nam; 446 struct mbuf *ns_raw; /* b: */ 447 struct mbuf *ns_rawend; /* b: */ 448 struct mbuf *ns_rec; /* b: */ 449 struct mbuf *ns_recend; /* b: */ 450 struct mbuf *ns_frag; /* b: */ 451 int ns_flags; /* s: */ 452 int ns_aflags; /* a: */ 453 int ns_gflags; /* g: */ 454 int ns_sflags; /* b: */ 455 int ns_cc; /* b: */ 456 int ns_reclen; /* b: */ 457 int ns_numuids; 458 u_int32_t ns_sref; /* g: */ 459 SIMPLEQ_HEAD(, nfsrv_descript) ns_sendq; /* s: send reply list */ 460 LIST_HEAD(, nfsrv_descript) ns_tq; /* g: Write gather lists */ 461 LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ]; 462 LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; /* g: */ 463 }; 464 465 /* Bits for "ns_flags" */ 466 #define SLP_VALID 0x01 467 #define SLP_BUSY 0x10 468 #define SLP_SENDING 0x80 469 470 /* Bits for "ns_aflags" */ 471 #define SLP_A_NEEDQ 0x01 472 #define SLP_A_DISCONN 0x04 473 474 /* Bits for "ns_gflags" */ 475 #define SLP_G_DOREC 0x02 /* on nfssvc_sockpending queue */ 476 477 /* Bits for "ns_sflags" */ 478 #define SLP_S_LASTFRAG 0x40 479 480 extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead; 481 extern struct nfssvc_sockhead nfssvc_sockpending; 482 extern int nfssvc_sockhead_flag; 483 #define SLP_INIT 0x01 484 485 /* 486 * One of these structures is allocated for each nfsd. 487 */ 488 struct nfsd { 489 TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */ 490 SLIST_ENTRY(nfsd) nfsd_idle; /* List of idle nfsd's */ 491 kcondvar_t nfsd_cv; 492 int nfsd_flag; /* NFSD_ flags */ 493 struct nfssvc_sock *nfsd_slp; /* Current socket */ 494 int nfsd_authlen; /* Authenticator len */ 495 u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ 496 int nfsd_verflen; /* and the Verifier */ 497 u_char nfsd_verfstr[RPCVERF_MAXSIZ]; 498 struct proc *nfsd_procp; /* Proc ptr */ 499 struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ 500 }; 501 502 /* Bits for "nfsd_flag" */ 503 #define NFSD_NEEDAUTH 0x04 504 #define NFSD_AUTHFAIL 0x08 505 506 #define NFSD_MAXFHSIZE 64 507 typedef struct nfsrvfh { 508 size_t nsfh_size; 509 union { 510 fhandle_t u_fh; 511 uint8_t u_opaque[NFSD_MAXFHSIZE]; 512 } nsfh_u; 513 } nfsrvfh_t; 514 #define NFSRVFH_SIZE(nsfh) ((nsfh)->nsfh_size) 515 #define NFSRVFH_DATA(nsfh) ((nsfh)->nsfh_u.u_opaque) 516 #define NFSRVFH_FHANDLE(nsfh) (&(nsfh)->nsfh_u.u_fh) 517 518 /* 519 * This structure is used by the server for describing each request. 520 * Some fields are used only when write request gathering is performed. 521 */ 522 struct nfsrv_descript { 523 u_quad_t nd_time; /* Write deadline (usec) */ 524 off_t nd_off; /* Start byte offset */ 525 off_t nd_eoff; /* and end byte offset */ 526 LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ 527 LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ 528 LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ 529 SIMPLEQ_ENTRY(nfsrv_descript) nd_sendq; /* send reply list */ 530 struct mbuf *nd_mrep; /* Request mbuf list */ 531 struct mbuf *nd_md; /* Current dissect mbuf */ 532 struct mbuf *nd_mreq; /* Reply mbuf list */ 533 struct mbuf *nd_nam; /* and socket addr */ 534 struct mbuf *nd_nam2; /* return socket addr */ 535 void * nd_dpos; /* Current dissect pos */ 536 u_int32_t nd_procnum; /* RPC # */ 537 int nd_stable; /* storage type */ 538 int nd_flag; /* nd_flag */ 539 int nd_len; /* Length of this write */ 540 int nd_repstat; /* Reply status */ 541 u_int32_t nd_retxid; /* Reply xid */ 542 u_int32_t nd_duration; /* Lease duration */ 543 struct timeval nd_starttime; /* Time RPC initiated */ 544 nfsrvfh_t nd_fh; /* File handle */ 545 kauth_cred_t nd_cr; /* Credentials */ 546 }; 547 548 /* Bits for "nd_flag" */ 549 #define ND_READ 0x01 /* Check lease for readers */ 550 #define ND_WRITE 0x02 /* Check lease for modifiers */ 551 #define ND_CHECK 0x04 552 #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) 553 #define ND_NFSV3 0x08 554 #define ND_KERBNICK 0x20 555 #define ND_KERBFULL 0x40 556 #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) 557 558 extern kmutex_t nfsd_lock; 559 extern kcondvar_t nfsd_initcv; 560 extern TAILQ_HEAD(nfsdhead, nfsd) nfsd_head; 561 extern SLIST_HEAD(nfsdidlehead, nfsd) nfsd_idle_head; 562 extern int nfsd_head_flag; 563 #define NFSD_CHECKSLP 0x01 564 565 extern struct mowner nfs_mowner; 566 extern struct nfsstats nfsstats; 567 extern int nfs_numasync; 568 569 /* 570 * These macros compare nfsrv_descript structures. 571 */ 572 #define NFSW_CONTIG(o, n) \ 573 ((o)->nd_eoff >= (n)->nd_off && \ 574 !memcmp((void *)&(o)->nd_fh, (void *)&(n)->nd_fh, NFSX_V3FH)) 575 576 /* 577 * Defines for WebNFS 578 */ 579 580 #define WEBNFS_ESC_CHAR '%' 581 #define WEBNFS_SPECCHAR_START 0x80 582 583 #define WEBNFS_NATIVE_CHAR 0x80 584 /* 585 * .. 586 * Possibly more here in the future. 587 */ 588 589 /* 590 * Macro for converting escape characters in WebNFS pathnames. 591 * Should really be in libkern. 592 */ 593 594 #define HEXTOC(c) \ 595 ((c) >= 'a' ? ((c) - ('a' - 10)) : \ 596 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0'))) 597 #define HEXSTRTOI(p) \ 598 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1])) 599 600 /* 601 * Structure holding information for a publicly exported filesystem 602 * (WebNFS). Currently the specs allow just for one such filesystem. 603 */ 604 struct nfs_public { 605 int np_valid; /* Do we hold valid information */ 606 fhandle_t *np_handle; /* Filehandle for pub fs (internal) */ 607 struct mount *np_mount; /* Mountpoint of exported fs */ 608 char *np_index; /* Index file */ 609 }; 610 #endif /* _KERNEL */ 611 612 #endif /* _NFS_NFS_H */ 613
Indexes created Wed Oct 15 16:09:53 GMT 2025