nfs.h revision 1.81
1 /* $NetBSD: nfs.h,v 1.81 2024/12/07 02:05:55 riastradh 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 #include <nfs/rpcv2.h> 48 49 /* 50 * Tunable constants for nfs 51 */ 52 53 #define NFS_MAXIOVEC 34 54 #define NFS_TICKINTVL 5 /* Desired time for a tick (msec) */ 55 #define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */ 56 #define NFS_TIMEO (3 * NFS_HZ) /* Default timeout = 3 seconds */ 57 #define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */ 58 #define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */ 59 #define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/ 60 #define NFS_MAXREXMIT 100 /* Stop counting after this many */ 61 #define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */ 62 #define NFS_RETRANS 10 /* Num of retrans for soft mounts */ 63 #define NFS_MAXGRPS 16 /* Max. size of groups list */ 64 #ifndef NFS_MINATTRTIMO 65 #define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */ 66 #endif 67 #ifndef NFS_MAXATTRTIMO 68 #define NFS_MAXATTRTIMO 60 69 #endif 70 #define NFS_TRYLATERDEL 1 /* Initial try later delay (sec) */ 71 #define NFS_TRYLATERDELMAX (1*60) /* Maximum try later delay (sec) */ 72 #define NFS_TRYLATERDELMUL 2 /* Exponential backoff multiplier */ 73 74 #define NFS_CWNDSCALE 256 75 #define NFS_MAXCWND (NFS_CWNDSCALE * 32) 76 77 /* 78 * These can be overridden through <machine/param.h>, included via 79 * <sys/param.h>. This means that <sys/param.h> should always be 80 * included before this file. 81 */ 82 #ifndef NFS_WSIZE 83 #define NFS_WSIZE 8192 /* Def. write data size */ 84 #endif 85 #ifndef NFS_RSIZE 86 #define NFS_RSIZE 8192 /* Def. read data size */ 87 #endif 88 #ifndef NFS_READDIRSIZE 89 #define NFS_READDIRSIZE 8192 /* Def. readdir size */ 90 #endif 91 92 /* 93 * NFS client IO daemon threads. May be overridden by config options. 94 */ 95 #ifndef NFS_MAXASYNCDAEMON 96 #define NFS_MAXASYNCDAEMON 128 /* Max. number async_daemons runnable */ 97 #endif 98 99 /* 100 * NFS client read-ahead. May be overridden by config options. 101 * Should be no more than NFS_MAXASYNCDAEMON as each read-ahead operation 102 * requires one IO thread. 103 */ 104 #ifndef NFS_MAXRAHEAD 105 #define NFS_MAXRAHEAD 32 /* Max. read ahead # blocks */ 106 #endif 107 #define NFS_DEFRAHEAD 2 /* Def. read ahead # blocks */ 108 109 #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */ 110 111 #define NFS_DEFDEADTHRESH NFS_NEVERDEAD /* Default nm_deadthresh */ 112 #define NFS_NEVERDEAD 9 /* Greater than max. nm_timeouts */ 113 114 #ifdef _KERNEL 115 extern int nfs_niothreads; /* Number of async_daemons desired */ 116 #ifndef NFS_DEFAULT_NIOTHREADS 117 #define NFS_DEFAULT_NIOTHREADS 4 118 #endif 119 #endif 120 #define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */ 121 #ifndef NFS_GATHERDELAY 122 #define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */ 123 #endif 124 125 /* 126 * NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for 127 * NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount 128 * of data in those buffers, and thus the minimum amount of data 129 * that you can request. NFS_DIRFRAGSIZ should be no smaller than 130 * DIRBLKSIZ. 131 */ 132 133 #define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */ 134 #define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */ 135 136 /* 137 * Maximum number of directory entries cached per NFS node, to avoid 138 * having this grow without bounds on very large directories. The 139 * minimum size to get reasonable performance for emulated binaries 140 * is the maximum number of entries that fits in NFS_DIRBLKSIZ. 141 * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36. 142 */ 143 #define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14) 144 145 /* 146 * Oddballs 147 */ 148 #define NFS_CMPFH(n, f, s) \ 149 ((n)->n_fhsize == (s) && !memcmp((void *)(n)->n_fhp, (void *)(f), (s))) 150 #ifdef NFS_V2_ONLY 151 #define NFS_ISV3(v) (0) 152 #else 153 #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) 154 #endif 155 #define NFS_SRVMAXDATA(n) \ 156 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ 157 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) 158 159 /* 160 * Use the vm_page flag reserved for pager use to indicate pages 161 * which have been written to the server but not yet committed. 162 */ 163 #define PG_NEEDCOMMIT PG_PAGER1 164 165 /* 166 * The IO_METASYNC flag should be implemented for local file systems. 167 * (Until then, it is nothin at all.) 168 */ 169 #ifndef IO_METASYNC 170 #define IO_METASYNC 0 171 #endif 172 173 /* 174 * Export arguments for local filesystem mount calls. 175 * Keep in mind that changing this structure modifies nfssvc(2)'s ABI (see 176 * 'struct mountd_exports_list' below). 177 * When modifying this structure, take care to also edit the 178 * nfs_update_exports_30 function in nfs_export.c accordingly to convert 179 * export_args to export_args30. 180 */ 181 struct export_args { 182 int ex_flags; /* export related flags */ 183 uid_t ex_root; /* mapping for root uid */ 184 struct uucred ex_anon; /* mapping for anonymous user */ 185 struct sockaddr *ex_addr; /* net address to which exported */ 186 int ex_addrlen; /* and the net address length */ 187 struct sockaddr *ex_mask; /* mask of valid bits in saddr */ 188 int ex_masklen; /* and the smask length */ 189 char *ex_indexfile; /* index file for WebNFS URLs */ 190 }; 191 192 /* 193 * Structures for the nfssvc(2) syscall. Not that anyone but mountd, nfsd and 194 * mount_nfs should ever try and use it. 195 */ 196 struct nfsd_args { 197 int sock; /* Socket to serve */ 198 void * name; /* Client addr for connection based sockets */ 199 int namelen; /* Length of name */ 200 }; 201 202 struct nfsd_srvargs { 203 struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ 204 uid_t nsd_uid; /* Effective uid mapped to cred */ 205 u_int32_t nsd_haddr; /* Ip address of client */ 206 struct uucred nsd_cr; /* Cred. uid maps to */ 207 int nsd_authlen; /* Length of auth string (ret) */ 208 u_char *nsd_authstr; /* Auth string (ret) */ 209 int nsd_verflen; /* and the verfier */ 210 u_char *nsd_verfstr; 211 struct timeval nsd_timestamp; /* timestamp from verifier */ 212 u_int32_t nsd_ttl; /* credential ttl (sec) */ 213 NFSKERBKEY_T nsd_key; /* Session key */ 214 }; 215 216 struct nfsd_cargs { 217 char *ncd_dirp; /* Mount dir path */ 218 uid_t ncd_authuid; /* Effective uid */ 219 int ncd_authtype; /* Type of authenticator */ 220 u_int ncd_authlen; /* Length of authenticator string */ 221 u_char *ncd_authstr; /* Authenticator string */ 222 u_int ncd_verflen; /* and the verifier */ 223 u_char *ncd_verfstr; 224 NFSKERBKEY_T ncd_key; /* Session key */ 225 }; 226 227 struct mountd_exports_list { 228 const char *mel_path; 229 size_t mel_nexports; 230 struct export_args *mel_exports; 231 }; 232 233 /* 234 * try to keep nfsstats, which is exposed to userland via sysctl, 235 * compatible after NQNFS removal. 236 * 26 is the old value of NFS_NPROCS, which includes NQNFS procedures. 237 */ 238 #define NFSSTATS_NPROCS 26 239 240 /* 241 * Stats structure 242 */ 243 struct nfsstats { 244 uint32_t attrcache_hits; 245 uint32_t attrcache_misses; 246 uint32_t lookupcache_hits; 247 uint32_t lookupcache_misses; 248 uint32_t direofcache_hits; 249 uint32_t direofcache_misses; 250 uint32_t biocache_reads; 251 uint32_t read_bios; 252 uint32_t read_physios; 253 uint32_t biocache_writes; 254 uint32_t write_bios; 255 uint32_t write_physios; 256 uint32_t biocache_readlinks; 257 uint32_t readlink_bios; 258 uint32_t biocache_readdirs; 259 uint32_t readdir_bios; 260 uint32_t rpccnt[NFSSTATS_NPROCS]; 261 uint32_t rpcretries; 262 uint32_t srvrpccnt[NFSSTATS_NPROCS]; 263 uint32_t srvrpc_errs; 264 uint32_t srv_errs; 265 uint32_t rpcrequests; 266 uint32_t rpctimeouts; 267 uint32_t rpcunexpected; 268 uint32_t rpcinvalid; 269 uint32_t srvcache_inproghits; 270 uint32_t srvcache_idemdonehits; 271 uint32_t srvcache_nonidemdonehits; 272 uint32_t srvcache_misses; 273 uint32_t __srvnqnfs_leases; /* unused */ 274 uint32_t __srvnqnfs_maxleases; /* unused */ 275 uint32_t __srvnqnfs_getleases; /* unused */ 276 uint32_t srvvop_writes; 277 }; 278 279 /* 280 * Flags for nfssvc() system call. 281 */ 282 #define NFSSVC_BIOD 0x002 283 #define NFSSVC_NFSD 0x004 284 #define NFSSVC_ADDSOCK 0x008 285 #define NFSSVC_AUTHIN 0x010 286 #define NFSSVC_GOTAUTH 0x040 287 #define NFSSVC_AUTHINFAIL 0x080 288 #define NFSSVC_MNTD 0x100 289 #define NFSSVC_SETEXPORTSLIST 0x200 290 #define NFSSVC_REPLACEEXPORTSLIST 0x400 291 292 /* 293 * fs.nfs sysctl(3) identifiers 294 */ 295 #define NFS_NFSSTATS 1 /* struct: struct nfsstats */ 296 #define NFS_IOTHREADS 2 /* number of io threads */ 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 u_int32_t r_procnum; /* NFS procedure number */ 333 int r_rtt; /* RTT for rpc */ 334 struct lwp *r_lwp; /* LWP that did I/O system call */ 335 }; 336 337 /* 338 * Queue head for nfsreq's 339 */ 340 extern TAILQ_HEAD(nfsreqhead, nfsreq) nfs_reqq; 341 extern kmutex_t nfs_reqq_lock; 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 #define NU_NETFAM(u) \ 424 (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_INET6) 425 426 /* 427 * b: protected by SLP_BUSY 428 * g: protected by nfsd_lock 429 * s: protected by ns_lock 430 * a: protected by ns_alock 431 */ 432 433 struct nfssvc_sock { 434 kmutex_t ns_lock; 435 kmutex_t ns_alock; 436 kcondvar_t ns_cv; /* s: */ 437 TAILQ_ENTRY(nfssvc_sock) ns_chain; /* g: List of all nfssvc_sock */ 438 TAILQ_ENTRY(nfssvc_sock) ns_pending; /* g: List of pending sockets */ 439 TAILQ_HEAD(, nfsuid) ns_uidlruhead; 440 struct file *ns_fp; 441 struct socket *ns_so; 442 struct mbuf *ns_nam; 443 struct mbuf *ns_raw; /* b: */ 444 struct mbuf *ns_rawend; /* b: */ 445 struct mbuf *ns_rec; /* b: */ 446 struct mbuf *ns_recend; /* b: */ 447 struct mbuf *ns_frag; /* b: */ 448 int ns_flags; /* s: */ 449 int ns_aflags; /* a: */ 450 int ns_gflags; /* g: */ 451 int ns_sflags; /* b: */ 452 int ns_cc; /* b: */ 453 int ns_reclen; /* b: */ 454 int ns_numuids; 455 u_int32_t ns_sref; /* g: */ 456 SIMPLEQ_HEAD(, nfsrv_descript) ns_sendq; /* s: send reply list */ 457 LIST_HEAD(, nfsrv_descript) ns_tq; /* g: Write gather lists */ 458 LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ]; 459 LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; /* g: */ 460 }; 461 462 /* Bits for "ns_flags" */ 463 #define SLP_VALID 0x01 464 #define SLP_BUSY 0x10 465 #define SLP_SENDING 0x80 466 467 /* Bits for "ns_aflags" */ 468 #define SLP_A_NEEDQ 0x01 469 #define SLP_A_DISCONN 0x04 470 471 /* Bits for "ns_gflags" */ 472 #define SLP_G_DOREC 0x02 /* on nfssvc_sockpending queue */ 473 474 /* Bits for "ns_sflags" */ 475 #define SLP_S_LASTFRAG 0x40 476 477 extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead; 478 extern struct nfssvc_sockhead nfssvc_sockpending; 479 extern int nfssvc_sockhead_flag; 480 #define SLP_INIT 0x01 481 482 /* 483 * One of these structures is allocated for each nfsd. 484 */ 485 struct nfsd { 486 struct rb_node nfsd_node; /* Tree of all nfsd's */ 487 SLIST_ENTRY(nfsd) nfsd_idle; /* List of idle nfsd's */ 488 kcondvar_t nfsd_cv; 489 int nfsd_flag; /* NFSD_ flags */ 490 struct nfssvc_sock *nfsd_slp; /* Current socket */ 491 int nfsd_authlen; /* Authenticator len */ 492 u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ 493 int nfsd_verflen; /* and the Verifier */ 494 u_char nfsd_verfstr[RPCVERF_MAXSIZ]; 495 struct proc *nfsd_procp; /* Proc ptr */ 496 struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ 497 uint32_t nfsd_cookie; /* Userland cookie, fits 32bit ptr */ 498 }; 499 500 /* Bits for "nfsd_flag" */ 501 #define NFSD_NEEDAUTH 0x04 502 #define NFSD_AUTHFAIL 0x08 503 504 #define NFSD_MAXFHSIZE 64 505 typedef struct nfsrvfh { 506 size_t nsfh_size; 507 union { 508 fhandle_t u_fh; 509 uint8_t u_opaque[NFSD_MAXFHSIZE]; 510 } nsfh_u; 511 } nfsrvfh_t; 512 #define NFSRVFH_SIZE(nsfh) ((nsfh)->nsfh_size) 513 #define NFSRVFH_DATA(nsfh) ((nsfh)->nsfh_u.u_opaque) 514 #define NFSRVFH_FHANDLE(nsfh) (&(nsfh)->nsfh_u.u_fh) 515 516 /* 517 * This structure is used by the server for describing each request. 518 * Some fields are used only when write request gathering is performed. 519 */ 520 struct nfsrv_descript { 521 u_quad_t nd_time; /* Write deadline (usec) */ 522 off_t nd_off; /* Start byte offset */ 523 off_t nd_eoff; /* and end byte offset */ 524 LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ 525 LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ 526 LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ 527 SIMPLEQ_ENTRY(nfsrv_descript) nd_sendq; /* send reply list */ 528 struct mbuf *nd_mrep; /* Request mbuf list */ 529 struct mbuf *nd_md; /* Current dissect mbuf */ 530 struct mbuf *nd_mreq; /* Reply mbuf list */ 531 struct mbuf *nd_nam; /* and socket addr */ 532 struct mbuf *nd_nam2; /* return socket addr */ 533 void * nd_dpos; /* Current dissect pos */ 534 u_int32_t nd_procnum; /* RPC # */ 535 int nd_stable; /* storage type */ 536 int nd_flag; /* nd_flag */ 537 int nd_len; /* Length of this write */ 538 int nd_repstat; /* Reply status */ 539 u_int32_t nd_retxid; /* Reply xid */ 540 u_int32_t nd_duration; /* Lease duration */ 541 struct timeval nd_starttime; /* Time RPC initiated */ 542 nfsrvfh_t nd_fh; /* File handle */ 543 kauth_cred_t nd_cr; /* Credentials */ 544 }; 545 546 /* Bits for "nd_flag" */ 547 #define ND_READ 0x01 /* Check lease for readers */ 548 #define ND_WRITE 0x02 /* Check lease for modifiers */ 549 #define ND_CHECK 0x04 550 #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) 551 #define ND_NFSV3 0x08 552 #define ND_KERBNICK 0x20 553 #define ND_KERBFULL 0x40 554 #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) 555 556 extern kmutex_t nfsd_lock; 557 extern kcondvar_t nfsd_initcv; 558 extern SLIST_HEAD(nfsdidlehead, nfsd) nfsd_idle_head; 559 extern int nfsd_head_flag; 560 #define NFSD_CHECKSLP 0x01 561 562 extern struct mowner nfs_mowner; 563 extern struct nfsstats nfsstats; 564 extern int nfs_numasync; 565 566 /* 567 * These macros compare nfsrv_descript structures. 568 */ 569 #define NFSW_CONTIG(o, n) \ 570 ((o)->nd_eoff >= (n)->nd_off && \ 571 !memcmp((void *)&(o)->nd_fh, (void *)&(n)->nd_fh, NFSX_V3FH)) 572 573 /* 574 * Defines for WebNFS 575 */ 576 577 #define WEBNFS_ESC_CHAR '%' 578 #define WEBNFS_SPECCHAR_START 0x80 579 580 #define WEBNFS_NATIVE_CHAR 0x80 581 /* 582 * .. 583 * Possibly more here in the future. 584 */ 585 586 /* 587 * Macro for converting escape characters in WebNFS pathnames. 588 * Should really be in libkern. 589 */ 590 591 #define HEXTOC(c) \ 592 ((c) >= 'a' ? ((c) - ('a' - 10)) : \ 593 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0'))) 594 #define HEXSTRTOI(p) \ 595 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1])) 596 597 /* 598 * Structure holding information for a publicly exported filesystem 599 * (WebNFS). Currently the specs allow just for one such filesystem. 600 */ 601 struct nfs_public { 602 int np_valid; /* Do we hold valid information */ 603 fhandle_t *np_handle; /* Filehandle for pub fs (internal) */ 604 struct mount *np_mount; /* Mountpoint of exported fs */ 605 char *np_index; /* Index file */ 606 }; 607 #endif /* _KERNEL */ 608 609 #endif /* _NFS_NFS_H */ 610
Indexes created Fri Sep 26 08:10:20 GMT 2025