nfs.h revision 1.77.2.1
1 /* $NetBSD: nfs.h,v 1.77.2.1 2018/09/06 06:56:45 pgoyette 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 #include <sys/rbtree.h> 45 #endif 46 47 /* 48 * Tunable constants for nfs 49 */ 50 51 #define NFS_MAXIOVEC 34 52 #define NFS_TICKINTVL 5 /* Desired time for a tick (msec) */ 53 #define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */ 54 #define NFS_TIMEO (3 * NFS_HZ) /* Default timeout = 3 seconds */ 55 #define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */ 56 #define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */ 57 #define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/ 58 #define NFS_MAXREXMIT 100 /* Stop counting after this many */ 59 #define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */ 60 #define NFS_RETRANS 10 /* Num of retrans for soft mounts */ 61 #define NFS_MAXGRPS 16 /* Max. size of groups list */ 62 #ifndef NFS_MINATTRTIMO 63 #define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */ 64 #endif 65 #ifndef NFS_MAXATTRTIMO 66 #define NFS_MAXATTRTIMO 60 67 #endif 68 #define NFS_TRYLATERDEL 1 /* Initial try later delay (sec) */ 69 #define NFS_TRYLATERDELMAX (1*60) /* Maximum try later delay (sec) */ 70 #define NFS_TRYLATERDELMUL 2 /* Exponential backoff multiplier */ 71 72 #define NFS_CWNDSCALE 256 73 #define NFS_MAXCWND (NFS_CWNDSCALE * 32) 74 75 /* 76 * These can be overridden through <machine/param.h>, included via 77 * <sys/param.h>. This means that <sys/param.h> should always be 78 * included before this file. 79 */ 80 #ifndef NFS_WSIZE 81 #define NFS_WSIZE 8192 /* Def. write data size */ 82 #endif 83 #ifndef NFS_RSIZE 84 #define NFS_RSIZE 8192 /* Def. read data size */ 85 #endif 86 #ifndef NFS_READDIRSIZE 87 #define NFS_READDIRSIZE 8192 /* Def. readdir size */ 88 #endif 89 90 /* 91 * NFS client IO daemon threads. May be overridden by config options. 92 */ 93 #ifndef NFS_MAXASYNCDAEMON 94 #define NFS_MAXASYNCDAEMON 128 /* Max. number async_daemons runable */ 95 #endif 96 97 /* 98 * NFS client read-ahead. May be overridden by config options. 99 * Should be no more than NFS_MAXASYNCDAEMON as each read-ahead operation 100 * requires one IO thread. 101 */ 102 #ifndef NFS_MAXRAHEAD 103 #define NFS_MAXRAHEAD 32 /* Max. read ahead # blocks */ 104 #endif 105 #define NFS_DEFRAHEAD 2 /* Def. read ahead # blocks */ 106 107 #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */ 108 109 #define NFS_DEFDEADTHRESH NFS_NEVERDEAD /* Default nm_deadthresh */ 110 #define NFS_NEVERDEAD 9 /* Greater than max. nm_timeouts */ 111 112 #ifdef _KERNEL 113 extern int nfs_niothreads; /* Number of async_daemons desired */ 114 #ifndef NFS_DEFAULT_NIOTHREADS 115 #define NFS_DEFAULT_NIOTHREADS 4 116 #endif 117 #endif 118 #define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */ 119 #ifndef NFS_GATHERDELAY 120 #define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */ 121 #endif 122 123 /* 124 * NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for 125 * NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount 126 * of data in those buffers, and thus the minimum amount of data 127 * that you can request. NFS_DIRFRAGSIZ should be no smaller than 128 * DIRBLKSIZ. 129 */ 130 131 #define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */ 132 #define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */ 133 134 /* 135 * Maximum number of directory entries cached per NFS node, to avoid 136 * having this grow without bounds on very large directories. The 137 * minimum size to get reasonable performance for emulated binaries 138 * is the maximum number of entries that fits in NFS_DIRBLKSIZ. 139 * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36. 140 */ 141 #define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14) 142 143 /* 144 * Oddballs 145 */ 146 #define NFS_CMPFH(n, f, s) \ 147 ((n)->n_fhsize == (s) && !memcmp((void *)(n)->n_fhp, (void *)(f), (s))) 148 #ifdef NFS_V2_ONLY 149 #define NFS_ISV3(v) (0) 150 #else 151 #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) 152 #endif 153 #define NFS_SRVMAXDATA(n) \ 154 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ 155 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) 156 157 /* 158 * Use the vm_page flag reserved for pager use to indicate pages 159 * which have been written to the server but not yet committed. 160 */ 161 #define PG_NEEDCOMMIT PG_PAGER1 162 163 /* 164 * The IO_METASYNC flag should be implemented for local file systems. 165 * (Until then, it is nothin at all.) 166 */ 167 #ifndef IO_METASYNC 168 #define IO_METASYNC 0 169 #endif 170 171 /* 172 * Export arguments for local filesystem mount calls. 173 * Keep in mind that changing this structure modifies nfssvc(2)'s ABI (see 174 * 'struct mountd_exports_list' below). 175 * When modifying this structure, take care to also edit the 176 * nfs_update_exports_30 function in nfs_export.c accordingly to convert 177 * export_args to export_args30. 178 */ 179 struct export_args { 180 int ex_flags; /* export related flags */ 181 uid_t ex_root; /* mapping for root uid */ 182 struct uucred ex_anon; /* mapping for anonymous user */ 183 struct sockaddr *ex_addr; /* net address to which exported */ 184 int ex_addrlen; /* and the net address length */ 185 struct sockaddr *ex_mask; /* mask of valid bits in saddr */ 186 int ex_masklen; /* and the smask length */ 187 char *ex_indexfile; /* index file for WebNFS URLs */ 188 }; 189 190 /* 191 * Structures for the nfssvc(2) syscall. Not that anyone but mountd, nfsd and 192 * mount_nfs should ever try and use it. 193 */ 194 struct nfsd_args { 195 int sock; /* Socket to serve */ 196 void * name; /* Client addr for connection based sockets */ 197 int namelen; /* Length of name */ 198 }; 199 200 struct nfsd_srvargs { 201 struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ 202 uid_t nsd_uid; /* Effective uid mapped to cred */ 203 u_int32_t nsd_haddr; /* Ip address of client */ 204 struct uucred nsd_cr; /* Cred. uid maps to */ 205 int nsd_authlen; /* Length of auth string (ret) */ 206 u_char *nsd_authstr; /* Auth string (ret) */ 207 int nsd_verflen; /* and the verfier */ 208 u_char *nsd_verfstr; 209 struct timeval nsd_timestamp; /* timestamp from verifier */ 210 u_int32_t nsd_ttl; /* credential ttl (sec) */ 211 NFSKERBKEY_T nsd_key; /* Session key */ 212 }; 213 214 struct nfsd_cargs { 215 char *ncd_dirp; /* Mount dir path */ 216 uid_t ncd_authuid; /* Effective uid */ 217 int ncd_authtype; /* Type of authenticator */ 218 u_int ncd_authlen; /* Length of authenticator string */ 219 u_char *ncd_authstr; /* Authenticator string */ 220 u_int ncd_verflen; /* and the verifier */ 221 u_char *ncd_verfstr; 222 NFSKERBKEY_T ncd_key; /* Session key */ 223 }; 224 225 struct mountd_exports_list { 226 const char *mel_path; 227 size_t mel_nexports; 228 struct export_args *mel_exports; 229 }; 230 231 /* 232 * try to keep nfsstats, which is exposed to userland via sysctl, 233 * compatible after NQNFS removal. 234 * 26 is the old value of NFS_NPROCS, which includes NQNFS procedures. 235 */ 236 #define NFSSTATS_NPROCS 26 237 238 /* 239 * Stats structure 240 */ 241 struct nfsstats { 242 uint32_t attrcache_hits; 243 uint32_t attrcache_misses; 244 uint32_t lookupcache_hits; 245 uint32_t lookupcache_misses; 246 uint32_t direofcache_hits; 247 uint32_t direofcache_misses; 248 uint32_t biocache_reads; 249 uint32_t read_bios; 250 uint32_t read_physios; 251 uint32_t biocache_writes; 252 uint32_t write_bios; 253 uint32_t write_physios; 254 uint32_t biocache_readlinks; 255 uint32_t readlink_bios; 256 uint32_t biocache_readdirs; 257 uint32_t readdir_bios; 258 uint32_t rpccnt[NFSSTATS_NPROCS]; 259 uint32_t rpcretries; 260 uint32_t srvrpccnt[NFSSTATS_NPROCS]; 261 uint32_t srvrpc_errs; 262 uint32_t srv_errs; 263 uint32_t rpcrequests; 264 uint32_t rpctimeouts; 265 uint32_t rpcunexpected; 266 uint32_t rpcinvalid; 267 uint32_t srvcache_inproghits; 268 uint32_t srvcache_idemdonehits; 269 uint32_t srvcache_nonidemdonehits; 270 uint32_t srvcache_misses; 271 uint32_t __srvnqnfs_leases; /* unused */ 272 uint32_t __srvnqnfs_maxleases; /* unused */ 273 uint32_t __srvnqnfs_getleases; /* unused */ 274 uint32_t srvvop_writes; 275 }; 276 277 /* 278 * Flags for nfssvc() system call. 279 */ 280 #define NFSSVC_BIOD 0x002 281 #define NFSSVC_NFSD 0x004 282 #define NFSSVC_ADDSOCK 0x008 283 #define NFSSVC_AUTHIN 0x010 284 #define NFSSVC_GOTAUTH 0x040 285 #define NFSSVC_AUTHINFAIL 0x080 286 #define NFSSVC_MNTD 0x100 287 #define NFSSVC_SETEXPORTSLIST 0x200 288 289 /* 290 * fs.nfs sysctl(3) identifiers 291 */ 292 #define NFS_NFSSTATS 1 /* struct: struct nfsstats */ 293 #define NFS_IOTHREADS 2 /* number of io threads */ 294 295 /* 296 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts. 297 * What should be in this set is open to debate, but I believe that since 298 * I/O system calls on ufs are never interrupted by signals the set should 299 * be minimal. My reasoning is that many current programs that use signals 300 * such as SIGALRM will not expect file I/O system calls to be interrupted 301 * by them and break. 302 */ 303 #ifdef _KERNEL 304 305 struct uio; struct buf; struct vattr; struct nameidata; /* XXX */ 306 307 /* 308 * Socket errors ignored for connectionless sockets?? 309 * For now, ignore them all 310 */ 311 #define NFSIGNORE_SOERROR(s, e) \ 312 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \ 313 ((s) & PR_CONNREQUIRED) == 0) 314 315 /* 316 * Nfs outstanding request list element 317 */ 318 struct nfsreq { 319 TAILQ_ENTRY(nfsreq) r_chain; 320 struct mbuf *r_mreq; 321 struct mbuf *r_mrep; 322 struct mbuf *r_md; 323 void * r_dpos; 324 struct nfsmount *r_nmp; 325 u_int32_t r_xid; 326 int r_flags; /* flags on request, see below */ 327 int r_retry; /* max retransmission count */ 328 int r_rexmit; /* current retrans count */ 329 u_int32_t r_procnum; /* NFS procedure number */ 330 int r_rtt; /* RTT for rpc */ 331 struct lwp *r_lwp; /* LWP that did I/O system call */ 332 }; 333 334 /* 335 * Queue head for nfsreq's 336 */ 337 extern TAILQ_HEAD(nfsreqhead, nfsreq) nfs_reqq; 338 extern kmutex_t nfs_reqq_lock; 339 340 /* Flag values for r_flags */ 341 #define R_TIMING 0x01 /* timing request (in mntp) */ 342 #define R_SENT 0x02 /* request has been sent */ 343 #define R_SOFTTERM 0x04 /* soft mnt, too many retries */ 344 #define R_INTR 0x08 /* intr mnt, signal pending */ 345 #define R_SOCKERR 0x10 /* Fatal error on socket */ 346 #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ 347 #define R_MUSTRESEND 0x40 /* Must resend request */ 348 #define R_REXMITTED 0x100 /* retransmitted after reconnect */ 349 350 /* 351 * A list of nfssvc_sock structures is maintained with all the sockets 352 * that require service by the nfsd. 353 * The nfsuid structs hang off of the nfssvc_sock structs in both lru 354 * and uid hash lists. 355 */ 356 #ifndef NFS_UIDHASHSIZ 357 #define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */ 358 #endif 359 #define NUIDHASH(sock, uid) \ 360 (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ]) 361 #ifndef NFS_WDELAYHASHSIZ 362 #define NFS_WDELAYHASHSIZ 16 /* and with this */ 363 #endif 364 #ifndef NFS_MUIDHASHSIZ 365 #define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */ 366 #endif 367 #define NMUIDHASH(nmp, uid) \ 368 (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ]) 369 370 #ifndef NFS_DIRHASHSIZ 371 #define NFS_DIRHASHSIZ 64 372 #endif 373 #define NFSDIRHASH(np, off) \ 374 (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)]) 375 376 /* 377 * Macros for storing/retrieving cookies into directory buffers. 378 */ 379 #define NFS_STASHCOOKIE(dp,off) \ 380 *((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t))) = off 381 #define NFS_GETCOOKIE(dp) \ 382 (*((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t)))) 383 #define NFS_STASHCOOKIE32(dp, val) \ 384 *((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 385 sizeof (int))) = val 386 #define NFS_GETCOOKIE32(dp) \ 387 (*((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 388 sizeof (int)))) 389 390 /* 391 * Flags passed to nfs_bioread(). 392 */ 393 #define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */ 394 395 /* 396 * Network address hash list element 397 */ 398 union nethostaddr { 399 u_int32_t had_inetaddr; 400 struct mbuf *had_nam; 401 }; 402 403 struct nfsuid { 404 TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */ 405 LIST_ENTRY(nfsuid) nu_hash; /* Hash list */ 406 int nu_flag; /* Flags */ 407 union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ 408 kauth_cred_t nu_cr; /* Cred uid mapped to */ 409 int nu_expire; /* Expiry time (sec) */ 410 struct timeval nu_timestamp; /* Kerb. timestamp */ 411 u_int32_t nu_nickname; /* Nickname on server */ 412 NFSKERBKEY_T nu_key; /* and session key */ 413 }; 414 415 #define nu_inetaddr nu_haddr.had_inetaddr 416 #define nu_nam nu_haddr.had_nam 417 /* Bits for nu_flag */ 418 #define NU_INETADDR 0x1 419 #define NU_NAM 0x2 420 #define NU_NETFAM(u) \ 421 (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_INET6) 422 423 /* 424 * b: protected by SLP_BUSY 425 * g: protected by nfsd_lock 426 * s: protected by ns_lock 427 * a: protected by ns_alock 428 */ 429 430 struct nfssvc_sock { 431 kmutex_t ns_lock; 432 kmutex_t ns_alock; 433 kcondvar_t ns_cv; /* s: */ 434 TAILQ_ENTRY(nfssvc_sock) ns_chain; /* g: List of all nfssvc_sock */ 435 TAILQ_ENTRY(nfssvc_sock) ns_pending; /* g: List of pending sockets */ 436 TAILQ_HEAD(, nfsuid) ns_uidlruhead; 437 struct file *ns_fp; 438 struct socket *ns_so; 439 struct mbuf *ns_nam; 440 struct mbuf *ns_raw; /* b: */ 441 struct mbuf *ns_rawend; /* b: */ 442 struct mbuf *ns_rec; /* b: */ 443 struct mbuf *ns_recend; /* b: */ 444 struct mbuf *ns_frag; /* b: */ 445 int ns_flags; /* s: */ 446 int ns_aflags; /* a: */ 447 int ns_gflags; /* g: */ 448 int ns_sflags; /* b: */ 449 int ns_cc; /* b: */ 450 int ns_reclen; /* b: */ 451 int ns_numuids; 452 u_int32_t ns_sref; /* g: */ 453 SIMPLEQ_HEAD(, nfsrv_descript) ns_sendq; /* s: send reply list */ 454 LIST_HEAD(, nfsrv_descript) ns_tq; /* g: Write gather lists */ 455 LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ]; 456 LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; /* g: */ 457 }; 458 459 /* Bits for "ns_flags" */ 460 #define SLP_VALID 0x01 461 #define SLP_BUSY 0x10 462 #define SLP_SENDING 0x80 463 464 /* Bits for "ns_aflags" */ 465 #define SLP_A_NEEDQ 0x01 466 #define SLP_A_DISCONN 0x04 467 468 /* Bits for "ns_gflags" */ 469 #define SLP_G_DOREC 0x02 /* on nfssvc_sockpending queue */ 470 471 /* Bits for "ns_sflags" */ 472 #define SLP_S_LASTFRAG 0x40 473 474 extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead; 475 extern struct nfssvc_sockhead nfssvc_sockpending; 476 extern int nfssvc_sockhead_flag; 477 #define SLP_INIT 0x01 478 479 /* 480 * One of these structures is allocated for each nfsd. 481 */ 482 struct nfsd { 483 struct rb_node nfsd_node; /* Tree of all nfsd's */ 484 SLIST_ENTRY(nfsd) nfsd_idle; /* List of idle nfsd's */ 485 kcondvar_t nfsd_cv; 486 int nfsd_flag; /* NFSD_ flags */ 487 struct nfssvc_sock *nfsd_slp; /* Current socket */ 488 int nfsd_authlen; /* Authenticator len */ 489 u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ 490 int nfsd_verflen; /* and the Verifier */ 491 u_char nfsd_verfstr[RPCVERF_MAXSIZ]; 492 struct proc *nfsd_procp; /* Proc ptr */ 493 struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ 494 uint32_t nfsd_cookie; /* Userland cookie, fits 32bit ptr */ 495 }; 496 497 /* Bits for "nfsd_flag" */ 498 #define NFSD_NEEDAUTH 0x04 499 #define NFSD_AUTHFAIL 0x08 500 501 #define NFSD_MAXFHSIZE 64 502 typedef struct nfsrvfh { 503 size_t nsfh_size; 504 union { 505 fhandle_t u_fh; 506 uint8_t u_opaque[NFSD_MAXFHSIZE]; 507 } nsfh_u; 508 } nfsrvfh_t; 509 #define NFSRVFH_SIZE(nsfh) ((nsfh)->nsfh_size) 510 #define NFSRVFH_DATA(nsfh) ((nsfh)->nsfh_u.u_opaque) 511 #define NFSRVFH_FHANDLE(nsfh) (&(nsfh)->nsfh_u.u_fh) 512 513 /* 514 * This structure is used by the server for describing each request. 515 * Some fields are used only when write request gathering is performed. 516 */ 517 struct nfsrv_descript { 518 u_quad_t nd_time; /* Write deadline (usec) */ 519 off_t nd_off; /* Start byte offset */ 520 off_t nd_eoff; /* and end byte offset */ 521 LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ 522 LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ 523 LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ 524 SIMPLEQ_ENTRY(nfsrv_descript) nd_sendq; /* send reply list */ 525 struct mbuf *nd_mrep; /* Request mbuf list */ 526 struct mbuf *nd_md; /* Current dissect mbuf */ 527 struct mbuf *nd_mreq; /* Reply mbuf list */ 528 struct mbuf *nd_nam; /* and socket addr */ 529 struct mbuf *nd_nam2; /* return socket addr */ 530 void * nd_dpos; /* Current dissect pos */ 531 u_int32_t nd_procnum; /* RPC # */ 532 int nd_stable; /* storage type */ 533 int nd_flag; /* nd_flag */ 534 int nd_len; /* Length of this write */ 535 int nd_repstat; /* Reply status */ 536 u_int32_t nd_retxid; /* Reply xid */ 537 u_int32_t nd_duration; /* Lease duration */ 538 struct timeval nd_starttime; /* Time RPC initiated */ 539 nfsrvfh_t nd_fh; /* File handle */ 540 kauth_cred_t nd_cr; /* Credentials */ 541 }; 542 543 /* Bits for "nd_flag" */ 544 #define ND_READ 0x01 /* Check lease for readers */ 545 #define ND_WRITE 0x02 /* Check lease for modifiers */ 546 #define ND_CHECK 0x04 547 #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) 548 #define ND_NFSV3 0x08 549 #define ND_KERBNICK 0x20 550 #define ND_KERBFULL 0x40 551 #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) 552 553 extern kmutex_t nfsd_lock; 554 extern kcondvar_t nfsd_initcv; 555 extern SLIST_HEAD(nfsdidlehead, nfsd) nfsd_idle_head; 556 extern int nfsd_head_flag; 557 #define NFSD_CHECKSLP 0x01 558 559 extern struct mowner nfs_mowner; 560 extern struct nfsstats nfsstats; 561 extern int nfs_numasync; 562 563 /* 564 * These macros compare nfsrv_descript structures. 565 */ 566 #define NFSW_CONTIG(o, n) \ 567 ((o)->nd_eoff >= (n)->nd_off && \ 568 !memcmp((void *)&(o)->nd_fh, (void *)&(n)->nd_fh, NFSX_V3FH)) 569 570 /* 571 * Defines for WebNFS 572 */ 573 574 #define WEBNFS_ESC_CHAR '%' 575 #define WEBNFS_SPECCHAR_START 0x80 576 577 #define WEBNFS_NATIVE_CHAR 0x80 578 /* 579 * .. 580 * Possibly more here in the future. 581 */ 582 583 /* 584 * Macro for converting escape characters in WebNFS pathnames. 585 * Should really be in libkern. 586 */ 587 588 #define HEXTOC(c) \ 589 ((c) >= 'a' ? ((c) - ('a' - 10)) : \ 590 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0'))) 591 #define HEXSTRTOI(p) \ 592 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1])) 593 594 /* 595 * Structure holding information for a publicly exported filesystem 596 * (WebNFS). Currently the specs allow just for one such filesystem. 597 */ 598 struct nfs_public { 599 int np_valid; /* Do we hold valid information */ 600 fhandle_t *np_handle; /* Filehandle for pub fs (internal) */ 601 struct mount *np_mount; /* Mountpoint of exported fs */ 602 char *np_index; /* Index file */ 603 }; 604 #endif /* _KERNEL */ 605 606 #endif /* _NFS_NFS_H */ 607
Indexes created Wed Oct 15 16:09:53 GMT 2025