1 /* $NetBSD: nfs.h,v 1.46 2004/05/12 20:11:27 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 #ifdef _KERNEL 99 extern int nfs_niothreads; /* Number of async_daemons desired */ 100 #ifndef NFS_DEFAULT_NIOTHREADS 101 #define NFS_DEFAULT_NIOTHREADS 4 102 #endif 103 #endif 104 #define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */ 105 #ifndef NFS_GATHERDELAY 106 #define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */ 107 #endif 108 109 /* 110 * NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for 111 * NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount 112 * of data in those buffers, and thus the minimum amount of data 113 * that you can request. NFS_DIRFRAGSIZ should be no smaller than 114 * DIRBLKSIZ. 115 */ 116 117 #define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */ 118 #define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */ 119 120 /* 121 * Maximum number of directory entries cached per NFS node, to avoid 122 * having this grow without bounds on very large directories. The 123 * minimum size to get reasonable performance for emulated binaries 124 * is the maximum number of entries that fits in NFS_DIRBLKSIZ. 125 * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36. 126 */ 127 #define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14) 128 129 /* 130 * Oddballs 131 */ 132 #define NMOD(a) ((a) % nfs_asyncdaemons) 133 #define NFS_CMPFH(n, f, s) \ 134 ((n)->n_fhsize == (s) && !memcmp((caddr_t)(n)->n_fhp, (caddr_t)(f), (s))) 135 #ifdef NFS_V2_ONLY 136 #define NFS_ISV3(v) (0) 137 #else 138 #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) 139 #endif 140 #define NFS_SRVMAXDATA(n) \ 141 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ 142 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) 143 144 /* 145 * The VA_EXCLUSIVE flag should be added for va_vaflags and set for an 146 * exclusive create. 147 */ 148 #if 0 149 #ifndef VA_EXCLUSIVE 150 #define VA_EXCLUSIVE 0 151 #endif 152 #endif 153 154 /* 155 * Use the vm_page flag reserved for pager use to indicate pages 156 * which have been written to the server but not yet committed. 157 */ 158 #define PG_NEEDCOMMIT PG_PAGER1 159 160 /* 161 * The IO_METASYNC flag should be implemented for local file systems. 162 * (Until then, it is nothin at all.) 163 */ 164 #ifndef IO_METASYNC 165 #define IO_METASYNC 0 166 #endif 167 168 /* 169 * Set the attribute timeout based on how recently the file has been modified. 170 */ 171 #define NFS_ATTRTIMEO(np) \ 172 ((((np)->n_flag & NMODIFIED) || \ 173 (time.tv_sec - (np)->n_mtime.tv_sec) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \ 174 ((time.tv_sec - (np)->n_mtime.tv_sec) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \ 175 (time.tv_sec - (np)->n_mtime.tv_sec) / 10)) 176 177 /* 178 * Structures for the nfssvc(2) syscall. Not that anyone but nfsd and mount_nfs 179 * should ever try and use it. 180 */ 181 struct nfsd_args { 182 int sock; /* Socket to serve */ 183 caddr_t name; /* Client addr for connection based sockets */ 184 int namelen; /* Length of name */ 185 }; 186 187 struct nfsd_srvargs { 188 struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ 189 uid_t nsd_uid; /* Effective uid mapped to cred */ 190 u_int32_t nsd_haddr; /* Ip address of client */ 191 struct uucred nsd_cr; /* Cred. uid maps to */ 192 int nsd_authlen; /* Length of auth string (ret) */ 193 u_char *nsd_authstr; /* Auth string (ret) */ 194 int nsd_verflen; /* and the verfier */ 195 u_char *nsd_verfstr; 196 struct timeval nsd_timestamp; /* timestamp from verifier */ 197 u_int32_t nsd_ttl; /* credential ttl (sec) */ 198 NFSKERBKEY_T nsd_key; /* Session key */ 199 }; 200 201 struct nfsd_cargs { 202 char *ncd_dirp; /* Mount dir path */ 203 uid_t ncd_authuid; /* Effective uid */ 204 int ncd_authtype; /* Type of authenticator */ 205 u_int ncd_authlen; /* Length of authenticator string */ 206 u_char *ncd_authstr; /* Authenticator string */ 207 u_int ncd_verflen; /* and the verifier */ 208 u_char *ncd_verfstr; 209 NFSKERBKEY_T ncd_key; /* Session key */ 210 }; 211 212 /* 213 * Stats structure 214 */ 215 struct nfsstats { 216 int attrcache_hits; 217 int attrcache_misses; 218 int lookupcache_hits; 219 int lookupcache_misses; 220 int direofcache_hits; 221 int direofcache_misses; 222 int biocache_reads; 223 int read_bios; 224 int read_physios; 225 int biocache_writes; 226 int write_bios; 227 int write_physios; 228 int biocache_readlinks; 229 int readlink_bios; 230 int biocache_readdirs; 231 int readdir_bios; 232 int rpccnt[NFS_NPROCS]; 233 int rpcretries; 234 int srvrpccnt[NFS_NPROCS]; 235 int srvrpc_errs; 236 int srv_errs; 237 int rpcrequests; 238 int rpctimeouts; 239 int rpcunexpected; 240 int rpcinvalid; 241 int srvcache_inproghits; 242 int srvcache_idemdonehits; 243 int srvcache_nonidemdonehits; 244 int srvcache_misses; 245 int srvnqnfs_leases; 246 int srvnqnfs_maxleases; 247 int srvnqnfs_getleases; 248 int srvvop_writes; 249 }; 250 251 /* 252 * Flags for nfssvc() system call. 253 */ 254 #define NFSSVC_BIOD 0x002 255 #define NFSSVC_NFSD 0x004 256 #define NFSSVC_ADDSOCK 0x008 257 #define NFSSVC_AUTHIN 0x010 258 #define NFSSVC_GOTAUTH 0x040 259 #define NFSSVC_AUTHINFAIL 0x080 260 #define NFSSVC_MNTD 0x100 261 262 /* 263 * fs.nfs sysctl(3) identifiers 264 */ 265 #define NFS_NFSSTATS 1 /* struct: struct nfsstats */ 266 #define NFS_IOTHREADS 2 /* number of io threads */ 267 #define NFS_MAXID 3 268 269 #define NFS_NAMES { \ 270 { 0, 0 }, \ 271 { "nfsstats", CTLTYPE_STRUCT }, \ 272 { "iothreads", CTLTYPE_INT }, \ 273 } 274 275 /* 276 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts. 277 * What should be in this set is open to debate, but I believe that since 278 * I/O system calls on ufs are never interrupted by signals the set should 279 * be minimal. My reasoning is that many current programs that use signals 280 * such as SIGALRM will not expect file I/O system calls to be interrupted 281 * by them and break. 282 */ 283 #ifdef _KERNEL 284 285 struct uio; struct buf; struct vattr; struct nameidata; /* XXX */ 286 287 /* 288 * Socket errors ignored for connectionless sockets?? 289 * For now, ignore them all 290 */ 291 #define NFSIGNORE_SOERROR(s, e) \ 292 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \ 293 ((s) & PR_CONNREQUIRED) == 0) 294 295 /* 296 * Nfs outstanding request list element 297 */ 298 struct nfsreq { 299 TAILQ_ENTRY(nfsreq) r_chain; 300 struct mbuf *r_mreq; 301 struct mbuf *r_mrep; 302 struct mbuf *r_md; 303 caddr_t r_dpos; 304 struct nfsmount *r_nmp; 305 u_int32_t r_xid; 306 int r_flags; /* flags on request, see below */ 307 int r_retry; /* max retransmission count */ 308 int r_rexmit; /* current retrans count */ 309 int r_timer; /* tick counter on reply */ 310 u_int32_t r_procnum; /* NFS procedure number */ 311 int r_rtt; /* RTT for rpc */ 312 struct proc *r_procp; /* Proc that did I/O system call */ 313 }; 314 315 /* 316 * Queue head for nfsreq's 317 */ 318 extern TAILQ_HEAD(nfsreqhead, nfsreq) nfs_reqq; 319 320 /* Flag values for r_flags */ 321 #define R_TIMING 0x01 /* timing request (in mntp) */ 322 #define R_SENT 0x02 /* request has been sent */ 323 #define R_SOFTTERM 0x04 /* soft mnt, too many retries */ 324 #define R_INTR 0x08 /* intr mnt, signal pending */ 325 #define R_SOCKERR 0x10 /* Fatal error on socket */ 326 #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ 327 #define R_MUSTRESEND 0x40 /* Must resend request */ 328 #define R_GETONEREP 0x80 /* Probe for one reply only */ 329 #define R_REXMITTED 0x100 /* retransmitted after reconnect */ 330 331 /* 332 * A list of nfssvc_sock structures is maintained with all the sockets 333 * that require service by the nfsd. 334 * The nfsuid structs hang off of the nfssvc_sock structs in both lru 335 * and uid hash lists. 336 */ 337 #ifndef NFS_UIDHASHSIZ 338 #define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */ 339 #endif 340 #define NUIDHASH(sock, uid) \ 341 (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ]) 342 #ifndef NFS_WDELAYHASHSIZ 343 #define NFS_WDELAYHASHSIZ 16 /* and with this */ 344 #endif 345 #define NWDELAYHASH(sock, f) \ 346 (&(sock)->ns_wdelayhashtbl[(*((u_int32_t *)(f))) % NFS_WDELAYHASHSIZ]) 347 #ifndef NFS_MUIDHASHSIZ 348 #define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */ 349 #endif 350 #define NMUIDHASH(nmp, uid) \ 351 (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ]) 352 #define NFSNOHASH(fhsum) ((fhsum) & nfsnodehash) 353 354 #ifndef NFS_DIRHASHSIZ 355 #define NFS_DIRHASHSIZ 64 356 #endif 357 #define NFSDIRHASH(np, off) \ 358 (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)]) 359 360 /* 361 * Macros for storing/retrieving cookies into directory buffers. 362 */ 363 #define NFS_STASHCOOKIE(dp,off) \ 364 *((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t))) = off 365 #define NFS_GETCOOKIE(dp) \ 366 (*((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t)))) 367 #define NFS_STASHCOOKIE32(dp, val) \ 368 *((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 369 sizeof (int))) = val 370 #define NFS_GETCOOKIE32(dp) \ 371 (*((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 372 sizeof (int)))) 373 374 /* 375 * Flags passed to nfs_bioread(). 376 */ 377 #define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */ 378 379 /* 380 * Network address hash list element 381 */ 382 union nethostaddr { 383 u_int32_t had_inetaddr; 384 struct mbuf *had_nam; 385 }; 386 387 struct nfsuid { 388 TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */ 389 LIST_ENTRY(nfsuid) nu_hash; /* Hash list */ 390 int nu_flag; /* Flags */ 391 union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ 392 struct ucred nu_cr; /* Cred uid mapped to */ 393 int nu_expire; /* Expiry time (sec) */ 394 struct timeval nu_timestamp; /* Kerb. timestamp */ 395 u_int32_t nu_nickname; /* Nickname on server */ 396 NFSKERBKEY_T nu_key; /* and session key */ 397 }; 398 399 #define nu_inetaddr nu_haddr.had_inetaddr 400 #define nu_nam nu_haddr.had_nam 401 /* Bits for nu_flag */ 402 #define NU_INETADDR 0x1 403 #define NU_NAM 0x2 404 #ifdef INET6 405 #define NU_NETFAM(u) \ 406 (((u)->nu_flag & NU_INETADDR) ? \ 407 (((u)->nu_flag & NU_NAM) ? AF_INET6 : AF_INET) : AF_ISO) 408 #else 409 #define NU_NETFAM(u) (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_ISO) 410 #endif 411 412 struct nfssvc_sock { 413 TAILQ_ENTRY(nfssvc_sock) ns_chain; /* List of all nfssvc_sock's */ 414 TAILQ_ENTRY(nfssvc_sock) ns_pending; /* List of pending sockets */ 415 TAILQ_HEAD(, nfsuid) ns_uidlruhead; 416 struct file *ns_fp; 417 struct socket *ns_so; 418 struct mbuf *ns_nam; 419 struct mbuf *ns_raw; 420 struct mbuf *ns_rawend; 421 struct mbuf *ns_rec; 422 struct mbuf *ns_recend; 423 struct mbuf *ns_frag; 424 int ns_flag; 425 int ns_solock; 426 int ns_cc; 427 int ns_reclen; 428 int ns_numuids; 429 u_int32_t ns_sref; 430 LIST_HEAD(, nfsrv_descript) ns_tq; /* Write gather lists */ 431 LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ]; 432 LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; 433 }; 434 435 /* Bits for "ns_flag" */ 436 #define SLP_VALID 0x01 437 #define SLP_DOREC 0x02 438 #define SLP_NEEDQ 0x04 439 #define SLP_DISCONN 0x08 440 #define SLP_GETSTREAM 0x10 441 #define SLP_LASTFRAG 0x20 442 #define SLP_ALLFLAGS 0xff 443 444 extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead; 445 extern struct nfssvc_sockhead nfssvc_sockpending; 446 extern int nfssvc_sockhead_flag; 447 #define SLP_INIT 0x01 448 #define SLP_WANTINIT 0x02 449 450 /* 451 * One of these structures is allocated for each nfsd. 452 */ 453 struct nfsd { 454 TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */ 455 SLIST_ENTRY(nfsd) nfsd_idle; /* List of idle nfsd's */ 456 int nfsd_flag; /* NFSD_ flags */ 457 struct nfssvc_sock *nfsd_slp; /* Current socket */ 458 int nfsd_authlen; /* Authenticator len */ 459 u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ 460 int nfsd_verflen; /* and the Verifier */ 461 u_char nfsd_verfstr[RPCVERF_MAXSIZ]; 462 struct proc *nfsd_procp; /* Proc ptr */ 463 struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ 464 }; 465 466 /* Bits for "nfsd_flag" */ 467 #define NFSD_WAITING 0x01 468 #define NFSD_REQINPROG 0x02 469 #define NFSD_NEEDAUTH 0x04 470 #define NFSD_AUTHFAIL 0x08 471 472 /* 473 * This structure is used by the server for describing each request. 474 * Some fields are used only when write request gathering is performed. 475 */ 476 struct nfsrv_descript { 477 u_quad_t nd_time; /* Write deadline (usec) */ 478 off_t nd_off; /* Start byte offset */ 479 off_t nd_eoff; /* and end byte offset */ 480 LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ 481 LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ 482 LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ 483 struct mbuf *nd_mrep; /* Request mbuf list */ 484 struct mbuf *nd_md; /* Current dissect mbuf */ 485 struct mbuf *nd_mreq; /* Reply mbuf list */ 486 struct mbuf *nd_nam; /* and socket addr */ 487 struct mbuf *nd_nam2; /* return socket addr */ 488 caddr_t nd_dpos; /* Current dissect pos */ 489 u_int32_t nd_procnum; /* RPC # */ 490 int nd_stable; /* storage type */ 491 int nd_flag; /* nd_flag */ 492 int nd_len; /* Length of this write */ 493 int nd_repstat; /* Reply status */ 494 u_int32_t nd_retxid; /* Reply xid */ 495 u_int32_t nd_duration; /* Lease duration */ 496 struct timeval nd_starttime; /* Time RPC initiated */ 497 fhandle_t nd_fh; /* File handle */ 498 struct ucred nd_cr; /* Credentials */ 499 }; 500 501 /* Bits for "nd_flag" */ 502 #define ND_READ LEASE_READ 503 #define ND_WRITE LEASE_WRITE 504 #define ND_CHECK 0x04 505 #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) 506 #define ND_NFSV3 0x08 507 #define ND_NQNFS 0x10 508 #define ND_KERBNICK 0x20 509 #define ND_KERBFULL 0x40 510 #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) 511 512 extern struct simplelock nfsd_slock; 513 extern TAILQ_HEAD(nfsdhead, nfsd) nfsd_head; 514 extern SLIST_HEAD(nfsdidlehead, nfsd) nfsd_idle_head; 515 extern int nfsd_head_flag; 516 #define NFSD_CHECKSLP 0x01 517 518 extern struct mowner nfs_mowner; 519 extern struct nfsstats nfsstats; 520 extern int nfs_numasync; 521 522 /* 523 * These macros compare nfsrv_descript structures. 524 */ 525 #define NFSW_CONTIG(o, n) \ 526 ((o)->nd_eoff >= (n)->nd_off && \ 527 !memcmp((caddr_t)&(o)->nd_fh, (caddr_t)&(n)->nd_fh, NFSX_V3FH)) 528 529 #define NFSW_SAMECRED(o, n) \ 530 (((o)->nd_flag & ND_KERBAUTH) == ((n)->nd_flag & ND_KERBAUTH) && \ 531 !memcmp((caddr_t)&(o)->nd_cr, (caddr_t)&(n)->nd_cr, \ 532 sizeof (struct ucred))) 533 534 /* 535 * Defines for WebNFS 536 */ 537 538 #define WEBNFS_ESC_CHAR '%' 539 #define WEBNFS_SPECCHAR_START 0x80 540 541 #define WEBNFS_NATIVE_CHAR 0x80 542 /* 543 * .. 544 * Possibly more here in the future. 545 */ 546 547 /* 548 * Macro for converting escape characters in WebNFS pathnames. 549 * Should really be in libkern. 550 */ 551 552 #define HEXTOC(c) \ 553 ((c) >= 'a' ? ((c) - ('a' - 10)) : \ 554 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0'))) 555 #define HEXSTRTOI(p) \ 556 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1])) 557 #endif /* _KERNEL */ 558 559 #endif /* _NFS_NFS_H */ 560