1 /* $NetBSD: nfs.h,v 1.34 2002/12/01 23:00:51 matt 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. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)nfs.h 8.4 (Berkeley) 5/1/95 38 */ 39 40 #ifndef _NFS_NFS_H_ 41 #define _NFS_NFS_H_ 42 43 /* 44 * Tunable constants for nfs 45 */ 46 47 #define NFS_MAXIOVEC 34 48 #define NFS_TICKINTVL 5 /* Desired time for a tick (msec) */ 49 #define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */ 50 #define NFS_TIMEO (3 * NFS_HZ) /* Default timeout = 3 seconds */ 51 #define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */ 52 #define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */ 53 #define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/ 54 #define NFS_MAXREXMIT 100 /* Stop counting after this many */ 55 #define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */ 56 #define NFS_RETRANS 10 /* Num of retrans for soft mounts */ 57 #define NFS_MAXGRPS 16 /* Max. size of groups list */ 58 #ifndef NFS_MINATTRTIMO 59 #define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */ 60 #endif 61 #ifndef NFS_MAXATTRTIMO 62 #define NFS_MAXATTRTIMO 60 63 #endif 64 65 /* 66 * These can be overridden through <machine/param.h>, included via 67 * <sys/param.h>. This means that <sys/param.h> should always be 68 * included before this file. 69 */ 70 #ifndef NFS_WSIZE 71 #define NFS_WSIZE 8192 /* Def. write data size */ 72 #endif 73 #ifndef NFS_RSIZE 74 #define NFS_RSIZE 8192 /* Def. read data size */ 75 #endif 76 #ifndef NFS_READDIRSIZE 77 #define NFS_READDIRSIZE 8192 /* Def. readdir size */ 78 #endif 79 80 #define NFS_DEFRAHEAD 2 /* Def. read ahead # blocks */ 81 #define NFS_MAXRAHEAD 4 /* Max. read ahead # blocks */ 82 #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */ 83 #define NFS_MAXASYNCDAEMON 20 /* Max. number async_daemons runable */ 84 #ifdef _KERNEL 85 extern int nfs_niothreads; /* Number of async_daemons desired */ 86 #ifndef NFS_DEFAULT_NIOTHREADS 87 #define NFS_DEFAULT_NIOTHREADS 4 88 #endif 89 #endif 90 #define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */ 91 #ifndef NFS_GATHERDELAY 92 #define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */ 93 #endif 94 95 /* 96 * NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for 97 * NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount 98 * of data in those buffers, and thus the minimum amount of data 99 * that you can request. NFS_DIRFRAGSIZ should be no smaller than 100 * DIRBLKSIZ. 101 */ 102 103 #define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */ 104 #define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */ 105 106 /* 107 * Maximum number of directory entries cached per NFS node, to avoid 108 * having this grow without bounds on very large directories. The 109 * minimum size to get reasonable performance for emulated binaries 110 * is the maximum number of entries that fits in NFS_DIRBLKSIZ. 111 * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36. 112 */ 113 #define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14) 114 115 /* 116 * Oddballs 117 */ 118 #define NMOD(a) ((a) % nfs_asyncdaemons) 119 #define NFS_CMPFH(n, f, s) \ 120 ((n)->n_fhsize == (s) && !memcmp((caddr_t)(n)->n_fhp, (caddr_t)(f), (s))) 121 #ifdef NFS_V2_ONLY 122 #define NFS_ISV3(v) (0) 123 #else 124 #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) 125 #endif 126 #define NFS_SRVMAXDATA(n) \ 127 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ 128 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) 129 130 /* 131 * The VA_EXCLUSIVE flag should be added for va_vaflags and set for an 132 * exclusive create. 133 */ 134 #if 0 135 #ifndef VA_EXCLUSIVE 136 #define VA_EXCLUSIVE 0 137 #endif 138 #endif 139 140 /* 141 * Use the vm_page flag reserved for pager use to indicate pages 142 * which have been written to the server but not yet committed. 143 */ 144 #define PG_NEEDCOMMIT PG_PAGER1 145 146 /* 147 * The IO_METASYNC flag should be implemented for local file systems. 148 * (Until then, it is nothin at all.) 149 */ 150 #ifndef IO_METASYNC 151 #define IO_METASYNC 0 152 #endif 153 154 /* 155 * Set the attribute timeout based on how recently the file has been modified. 156 */ 157 #define NFS_ATTRTIMEO(np) \ 158 ((((np)->n_flag & NMODIFIED) || \ 159 (time.tv_sec - (np)->n_mtime) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \ 160 ((time.tv_sec - (np)->n_mtime) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \ 161 (time.tv_sec - (np)->n_mtime) / 10)) 162 163 /* 164 * Expected allocation sizes for major data structures. If the actual size 165 * of the structure exceeds these sizes, then malloc() will be allocating 166 * almost twice the memory required. This is used in nfs_init() to warn 167 * the sysadmin that the size of a structure should be reduced. 168 * (These sizes are always a power of 2. If the kernel malloc() changes 169 * to one that does not allocate space in powers of 2 size, then this all 170 * becomes bunk!) 171 */ 172 #define NFS_NODEALLOC 256 173 #define NFS_MNTALLOC 512 174 #define NFS_SVCALLOC 256 175 #define NFS_UIDALLOC 128 176 177 /* 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 struct vnode *r_vp; 306 u_int32_t r_xid; 307 int r_flags; /* flags on request, see below */ 308 int r_retry; /* max retransmission count */ 309 int r_rexmit; /* current retrans count */ 310 int r_timer; /* tick counter on reply */ 311 u_int32_t r_procnum; /* NFS procedure number */ 312 int r_rtt; /* RTT for rpc */ 313 struct proc *r_procp; /* Proc that did I/O system call */ 314 }; 315 316 /* 317 * Queue head for nfsreq's 318 */ 319 extern TAILQ_HEAD(nfsreqhead, nfsreq) nfs_reqq; 320 321 /* Flag values for r_flags */ 322 #define R_TIMING 0x01 /* timing request (in mntp) */ 323 #define R_SENT 0x02 /* request has been sent */ 324 #define R_SOFTTERM 0x04 /* soft mnt, too many retries */ 325 #define R_INTR 0x08 /* intr mnt, signal pending */ 326 #define R_SOCKERR 0x10 /* Fatal error on socket */ 327 #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ 328 #define R_MUSTRESEND 0x40 /* Must resend request */ 329 #define R_GETONEREP 0x80 /* Probe for one reply only */ 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_HEAD(, nfsuid) ns_uidlruhead; 415 struct file *ns_fp; 416 struct socket *ns_so; 417 struct mbuf *ns_nam; 418 struct mbuf *ns_raw; 419 struct mbuf *ns_rawend; 420 struct mbuf *ns_rec; 421 struct mbuf *ns_recend; 422 struct mbuf *ns_frag; 423 int ns_flag; 424 int ns_solock; 425 int ns_cc; 426 int ns_reclen; 427 int ns_numuids; 428 u_int32_t ns_sref; 429 LIST_HEAD(, nfsrv_descript) ns_tq; /* Write gather lists */ 430 LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ]; 431 LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; 432 }; 433 434 /* Bits for "ns_flag" */ 435 #define SLP_VALID 0x01 436 #define SLP_DOREC 0x02 437 #define SLP_NEEDQ 0x04 438 #define SLP_DISCONN 0x08 439 #define SLP_GETSTREAM 0x10 440 #define SLP_LASTFRAG 0x20 441 #define SLP_ALLFLAGS 0xff 442 443 extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead; 444 extern int nfssvc_sockhead_flag; 445 #define SLP_INIT 0x01 446 #define SLP_WANTINIT 0x02 447 448 /* 449 * One of these structures is allocated for each nfsd. 450 */ 451 struct nfsd { 452 TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */ 453 int nfsd_flag; /* NFSD_ flags */ 454 struct nfssvc_sock *nfsd_slp; /* Current socket */ 455 int nfsd_authlen; /* Authenticator len */ 456 u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ 457 int nfsd_verflen; /* and the Verifier */ 458 u_char nfsd_verfstr[RPCVERF_MAXSIZ]; 459 struct proc *nfsd_procp; /* Proc ptr */ 460 struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ 461 }; 462 463 /* Bits for "nfsd_flag" */ 464 #define NFSD_WAITING 0x01 465 #define NFSD_REQINPROG 0x02 466 #define NFSD_NEEDAUTH 0x04 467 #define NFSD_AUTHFAIL 0x08 468 469 /* 470 * This structure is used by the server for describing each request. 471 * Some fields are used only when write request gathering is performed. 472 */ 473 struct nfsrv_descript { 474 u_quad_t nd_time; /* Write deadline (usec) */ 475 off_t nd_off; /* Start byte offset */ 476 off_t nd_eoff; /* and end byte offset */ 477 LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ 478 LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ 479 LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ 480 struct mbuf *nd_mrep; /* Request mbuf list */ 481 struct mbuf *nd_md; /* Current dissect mbuf */ 482 struct mbuf *nd_mreq; /* Reply mbuf list */ 483 struct mbuf *nd_nam; /* and socket addr */ 484 struct mbuf *nd_nam2; /* return socket addr */ 485 caddr_t nd_dpos; /* Current dissect pos */ 486 u_int32_t nd_procnum; /* RPC # */ 487 int nd_stable; /* storage type */ 488 int nd_flag; /* nd_flag */ 489 int nd_len; /* Length of this write */ 490 int nd_repstat; /* Reply status */ 491 u_int32_t nd_retxid; /* Reply xid */ 492 u_int32_t nd_duration; /* Lease duration */ 493 struct timeval nd_starttime; /* Time RPC initiated */ 494 fhandle_t nd_fh; /* File handle */ 495 struct ucred nd_cr; /* Credentials */ 496 }; 497 498 /* Bits for "nd_flag" */ 499 #define ND_READ LEASE_READ 500 #define ND_WRITE LEASE_WRITE 501 #define ND_CHECK 0x04 502 #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) 503 #define ND_NFSV3 0x08 504 #define ND_NQNFS 0x10 505 #define ND_KERBNICK 0x20 506 #define ND_KERBFULL 0x40 507 #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) 508 509 extern TAILQ_HEAD(nfsdhead, nfsd) nfsd_head; 510 extern int nfsd_head_flag; 511 #define NFSD_CHECKSLP 0x01 512 513 extern struct nfsstats nfsstats; 514 extern int nfs_numasync; 515 516 /* 517 * These macros compare nfsrv_descript structures. 518 */ 519 #define NFSW_CONTIG(o, n) \ 520 ((o)->nd_eoff >= (n)->nd_off && \ 521 !memcmp((caddr_t)&(o)->nd_fh, (caddr_t)&(n)->nd_fh, NFSX_V3FH)) 522 523 #define NFSW_SAMECRED(o, n) \ 524 (((o)->nd_flag & ND_KERBAUTH) == ((n)->nd_flag & ND_KERBAUTH) && \ 525 !memcmp((caddr_t)&(o)->nd_cr, (caddr_t)&(n)->nd_cr, \ 526 sizeof (struct ucred))) 527 528 /* 529 * Defines for WebNFS 530 */ 531 532 #define WEBNFS_ESC_CHAR '%' 533 #define WEBNFS_SPECCHAR_START 0x80 534 535 #define WEBNFS_NATIVE_CHAR 0x80 536 /* 537 * .. 538 * Possibly more here in the future. 539 */ 540 541 /* 542 * Macro for converting escape characters in WebNFS pathnames. 543 * Should really be in libkern. 544 */ 545 546 #define HEXTOC(c) \ 547 ((c) >= 'a' ? ((c) - ('a' - 10)) : \ 548 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0'))) 549 #define HEXSTRTOI(p) \ 550 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1])) 551 #endif /* _KERNEL */ 552 553 #endif /* _NFS_NFS_H */ 554