nfs.h revision 1.27
1 /* $NetBSD: nfs.h,v 1.27 2001/04/02 11:47:23 fvdl 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 #endif 87 #define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */ 88 #ifndef NFS_GATHERDELAY 89 #define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */ 90 #endif 91 92 /* 93 * NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for 94 * NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount 95 * of data in those buffers, and thus the minimum amount of data 96 * that you can request. NFS_DIRFRAGSIZ should be no smaller than 97 * DIRBLKSIZ. 98 */ 99 100 #if 1 101 /* 102 * XXXUBC temp hack because of the removal of b_validend. 103 * eventually we'll store NFS VDIR data in the page cache as well, 104 * we'll fix this at that point. 105 */ 106 #define NFS_DIRBLKSIZ PAGE_SIZE 107 #define NFS_DIRFRAGSIZ PAGE_SIZE 108 #else 109 #define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */ 110 #define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */ 111 #endif 112 113 /* 114 * Maximum number of directory entries cached per NFS node, to avoid 115 * having this grow without bounds on very large directories. The 116 * minimum size to get reasonable performance for emulated binaries 117 * is the maximum number of entries that fits in NFS_DIRBLKSIZ. 118 * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36. 119 */ 120 #define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14) 121 122 /* 123 * Oddballs 124 */ 125 #define NMOD(a) ((a) % nfs_asyncdaemons) 126 #define NFS_CMPFH(n, f, s) \ 127 ((n)->n_fhsize == (s) && !memcmp((caddr_t)(n)->n_fhp, (caddr_t)(f), (s))) 128 #ifdef NFS_V2_ONLY 129 #define NFS_ISV3(v) (0) 130 #else 131 #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) 132 #endif 133 #define NFS_SRVMAXDATA(n) \ 134 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ 135 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) 136 137 /* 138 * The VA_EXCLUSIVE flag should be added for va_vaflags and set for an 139 * exclusive create. 140 */ 141 #ifndef VA_EXCLUSIVE 142 #define VA_EXCLUSIVE 0 143 #endif 144 145 /* 146 * Use the vm_page flag reserved for pager use to indicate pages 147 * which have been written to the server but not yet committed. 148 */ 149 #define PG_NEEDCOMMIT PG_PAGER1 150 151 /* 152 * The IO_METASYNC flag should be implemented for local file systems. 153 * (Until then, it is nothin at all.) 154 */ 155 #ifndef IO_METASYNC 156 #define IO_METASYNC 0 157 #endif 158 159 /* 160 * Set the attribute timeout based on how recently the file has been modified. 161 */ 162 #define NFS_ATTRTIMEO(np) \ 163 ((((np)->n_flag & NMODIFIED) || \ 164 (time.tv_sec - (np)->n_mtime) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \ 165 ((time.tv_sec - (np)->n_mtime) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \ 166 (time.tv_sec - (np)->n_mtime) / 10)) 167 168 /* 169 * Expected allocation sizes for major data structures. If the actual size 170 * of the structure exceeds these sizes, then malloc() will be allocating 171 * almost twice the memory required. This is used in nfs_init() to warn 172 * the sysadmin that the size of a structure should be reduced. 173 * (These sizes are always a power of 2. If the kernel malloc() changes 174 * to one that does not allocate space in powers of 2 size, then this all 175 * becomes bunk!) 176 */ 177 #define NFS_NODEALLOC 256 178 #define NFS_MNTALLOC 512 179 #define NFS_SVCALLOC 256 180 #define NFS_UIDALLOC 128 181 182 /* 183 * Structures for the nfssvc(2) syscall. Not that anyone but nfsd and mount_nfs 184 * should ever try and use it. 185 */ 186 struct nfsd_args { 187 int sock; /* Socket to serve */ 188 caddr_t name; /* Client addr for connection based sockets */ 189 int namelen; /* Length of name */ 190 }; 191 192 struct nfsd_srvargs { 193 struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ 194 uid_t nsd_uid; /* Effective uid mapped to cred */ 195 u_int32_t nsd_haddr; /* Ip address of client */ 196 struct ucred nsd_cr; /* Cred. uid maps to */ 197 int nsd_authlen; /* Length of auth string (ret) */ 198 u_char *nsd_authstr; /* Auth string (ret) */ 199 int nsd_verflen; /* and the verfier */ 200 u_char *nsd_verfstr; 201 struct timeval nsd_timestamp; /* timestamp from verifier */ 202 u_int32_t nsd_ttl; /* credential ttl (sec) */ 203 NFSKERBKEY_T nsd_key; /* Session key */ 204 }; 205 206 struct nfsd_cargs { 207 char *ncd_dirp; /* Mount dir path */ 208 uid_t ncd_authuid; /* Effective uid */ 209 int ncd_authtype; /* Type of authenticator */ 210 int ncd_authlen; /* Length of authenticator string */ 211 u_char *ncd_authstr; /* Authenticator string */ 212 int ncd_verflen; /* and the verifier */ 213 u_char *ncd_verfstr; 214 NFSKERBKEY_T ncd_key; /* Session key */ 215 }; 216 217 /* 218 * Stats structure 219 */ 220 struct nfsstats { 221 int attrcache_hits; 222 int attrcache_misses; 223 int lookupcache_hits; 224 int lookupcache_misses; 225 int direofcache_hits; 226 int direofcache_misses; 227 int biocache_reads; 228 int read_bios; 229 int read_physios; 230 int biocache_writes; 231 int write_bios; 232 int write_physios; 233 int biocache_readlinks; 234 int readlink_bios; 235 int biocache_readdirs; 236 int readdir_bios; 237 int rpccnt[NFS_NPROCS]; 238 int rpcretries; 239 int srvrpccnt[NFS_NPROCS]; 240 int srvrpc_errs; 241 int srv_errs; 242 int rpcrequests; 243 int rpctimeouts; 244 int rpcunexpected; 245 int rpcinvalid; 246 int srvcache_inproghits; 247 int srvcache_idemdonehits; 248 int srvcache_nonidemdonehits; 249 int srvcache_misses; 250 int srvnqnfs_leases; 251 int srvnqnfs_maxleases; 252 int srvnqnfs_getleases; 253 int srvvop_writes; 254 }; 255 256 /* 257 * Flags for nfssvc() system call. 258 */ 259 #define NFSSVC_BIOD 0x002 260 #define NFSSVC_NFSD 0x004 261 #define NFSSVC_ADDSOCK 0x008 262 #define NFSSVC_AUTHIN 0x010 263 #define NFSSVC_GOTAUTH 0x040 264 #define NFSSVC_AUTHINFAIL 0x080 265 #define NFSSVC_MNTD 0x100 266 267 /* 268 * fs.nfs sysctl(3) identifiers 269 */ 270 #define NFS_NFSSTATS 1 /* struct: struct nfsstats */ 271 #define NFS_IOTHREADS 2 /* number of io threads */ 272 #define NFS_MAXID 3 273 274 #define NFS_NAMES { \ 275 { 0, 0 }, \ 276 { "nfsstats", CTLTYPE_STRUCT }, \ 277 { "iothreads", CTLTYPE_INT }, \ 278 } 279 280 /* 281 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts. 282 * What should be in this set is open to debate, but I believe that since 283 * I/O system calls on ufs are never interrupted by signals the set should 284 * be minimal. My reasoning is that many current programs that use signals 285 * such as SIGALRM will not expect file I/O system calls to be interrupted 286 * by them and break. 287 */ 288 #ifdef _KERNEL 289 290 struct uio; struct buf; struct vattr; struct nameidata; /* XXX */ 291 292 /* 293 * Socket errors ignored for connectionless sockets?? 294 * For now, ignore them all 295 */ 296 #define NFSIGNORE_SOERROR(s, e) \ 297 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \ 298 ((s) & PR_CONNREQUIRED) == 0) 299 300 /* 301 * Nfs outstanding request list element 302 */ 303 struct nfsreq { 304 TAILQ_ENTRY(nfsreq) r_chain; 305 struct mbuf *r_mreq; 306 struct mbuf *r_mrep; 307 struct mbuf *r_md; 308 caddr_t r_dpos; 309 struct nfsmount *r_nmp; 310 struct vnode *r_vp; 311 u_int32_t r_xid; 312 int r_flags; /* flags on request, see below */ 313 int r_retry; /* max retransmission count */ 314 int r_rexmit; /* current retrans count */ 315 int r_timer; /* tick counter on reply */ 316 u_int32_t r_procnum; /* NFS procedure number */ 317 int r_rtt; /* RTT for rpc */ 318 struct proc *r_procp; /* Proc that did I/O system call */ 319 }; 320 321 /* 322 * Queue head for nfsreq's 323 */ 324 TAILQ_HEAD(, nfsreq) nfs_reqq; 325 326 /* Flag values for r_flags */ 327 #define R_TIMING 0x01 /* timing request (in mntp) */ 328 #define R_SENT 0x02 /* request has been sent */ 329 #define R_SOFTTERM 0x04 /* soft mnt, too many retries */ 330 #define R_INTR 0x08 /* intr mnt, signal pending */ 331 #define R_SOCKERR 0x10 /* Fatal error on socket */ 332 #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ 333 #define R_MUSTRESEND 0x40 /* Must resend request */ 334 #define R_GETONEREP 0x80 /* Probe for one reply only */ 335 336 /* 337 * A list of nfssvc_sock structures is maintained with all the sockets 338 * that require service by the nfsd. 339 * The nfsuid structs hang off of the nfssvc_sock structs in both lru 340 * and uid hash lists. 341 */ 342 #ifndef NFS_UIDHASHSIZ 343 #define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */ 344 #endif 345 #define NUIDHASH(sock, uid) \ 346 (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ]) 347 #ifndef NFS_WDELAYHASHSIZ 348 #define NFS_WDELAYHASHSIZ 16 /* and with this */ 349 #endif 350 #define NWDELAYHASH(sock, f) \ 351 (&(sock)->ns_wdelayhashtbl[(*((u_int32_t *)(f))) % NFS_WDELAYHASHSIZ]) 352 #ifndef NFS_MUIDHASHSIZ 353 #define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */ 354 #endif 355 #define NMUIDHASH(nmp, uid) \ 356 (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ]) 357 #define NFSNOHASH(fhsum) \ 358 (&nfsnodehashtbl[(fhsum) & nfsnodehash]) 359 360 #ifndef NFS_DIRHASHSIZ 361 #define NFS_DIRHASHSIZ 64 362 #endif 363 #define NFSDIRHASH(np, off) \ 364 (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)]) 365 366 /* 367 * Macros for storing/retrieving cookies into directory buffers. 368 */ 369 #define NFS_STASHCOOKIE(dp,off) \ 370 *((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t))) = off 371 #define NFS_GETCOOKIE(dp) \ 372 (*((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t)))) 373 #define NFS_STASHCOOKIE32(dp, val) \ 374 *((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 375 sizeof (int))) = val 376 #define NFS_GETCOOKIE32(dp) \ 377 (*((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 378 sizeof (int)))) 379 380 /* 381 * Flags passed to nfs_bioread(). 382 */ 383 #define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */ 384 385 /* 386 * Network address hash list element 387 */ 388 union nethostaddr { 389 u_int32_t had_inetaddr; 390 struct mbuf *had_nam; 391 }; 392 393 struct nfsuid { 394 TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */ 395 LIST_ENTRY(nfsuid) nu_hash; /* Hash list */ 396 int nu_flag; /* Flags */ 397 union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ 398 struct ucred nu_cr; /* Cred uid mapped to */ 399 int nu_expire; /* Expiry time (sec) */ 400 struct timeval nu_timestamp; /* Kerb. timestamp */ 401 u_int32_t nu_nickname; /* Nickname on server */ 402 NFSKERBKEY_T nu_key; /* and session key */ 403 }; 404 405 #define nu_inetaddr nu_haddr.had_inetaddr 406 #define nu_nam nu_haddr.had_nam 407 /* Bits for nu_flag */ 408 #define NU_INETADDR 0x1 409 #define NU_NAM 0x2 410 #ifdef INET6 411 #define NU_NETFAM(u) \ 412 (((u)->nu_flag & NU_INETADDR) ? \ 413 (((u)->nu_flag & NU_NAM) ? AF_INET6 : AF_INET) : AF_ISO) 414 #else 415 #define NU_NETFAM(u) (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_ISO) 416 #endif 417 418 struct nfssvc_sock { 419 TAILQ_ENTRY(nfssvc_sock) ns_chain; /* List of all nfssvc_sock's */ 420 TAILQ_HEAD(, nfsuid) ns_uidlruhead; 421 struct file *ns_fp; 422 struct socket *ns_so; 423 struct mbuf *ns_nam; 424 struct mbuf *ns_raw; 425 struct mbuf *ns_rawend; 426 struct mbuf *ns_rec; 427 struct mbuf *ns_recend; 428 struct mbuf *ns_frag; 429 int ns_flag; 430 int ns_solock; 431 int ns_cc; 432 int ns_reclen; 433 int ns_numuids; 434 u_int32_t ns_sref; 435 LIST_HEAD(, nfsrv_descript) ns_tq; /* Write gather lists */ 436 LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ]; 437 LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; 438 }; 439 440 /* Bits for "ns_flag" */ 441 #define SLP_VALID 0x01 442 #define SLP_DOREC 0x02 443 #define SLP_NEEDQ 0x04 444 #define SLP_DISCONN 0x08 445 #define SLP_GETSTREAM 0x10 446 #define SLP_LASTFRAG 0x20 447 #define SLP_ALLFLAGS 0xff 448 449 TAILQ_HEAD(, nfssvc_sock) nfssvc_sockhead; 450 int nfssvc_sockhead_flag; 451 #define SLP_INIT 0x01 452 #define SLP_WANTINIT 0x02 453 454 /* 455 * One of these structures is allocated for each nfsd. 456 */ 457 struct nfsd { 458 TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */ 459 int nfsd_flag; /* NFSD_ flags */ 460 struct nfssvc_sock *nfsd_slp; /* Current socket */ 461 int nfsd_authlen; /* Authenticator len */ 462 u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ 463 int nfsd_verflen; /* and the Verifier */ 464 u_char nfsd_verfstr[RPCVERF_MAXSIZ]; 465 struct proc *nfsd_procp; /* Proc ptr */ 466 struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ 467 }; 468 469 /* Bits for "nfsd_flag" */ 470 #define NFSD_WAITING 0x01 471 #define NFSD_REQINPROG 0x02 472 #define NFSD_NEEDAUTH 0x04 473 #define NFSD_AUTHFAIL 0x08 474 475 /* 476 * This structure is used by the server for describing each request. 477 * Some fields are used only when write request gathering is performed. 478 */ 479 struct nfsrv_descript { 480 u_quad_t nd_time; /* Write deadline (usec) */ 481 off_t nd_off; /* Start byte offset */ 482 off_t nd_eoff; /* and end byte offset */ 483 LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ 484 LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ 485 LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ 486 struct mbuf *nd_mrep; /* Request mbuf list */ 487 struct mbuf *nd_md; /* Current dissect mbuf */ 488 struct mbuf *nd_mreq; /* Reply mbuf list */ 489 struct mbuf *nd_nam; /* and socket addr */ 490 struct mbuf *nd_nam2; /* return socket addr */ 491 caddr_t nd_dpos; /* Current dissect pos */ 492 u_int32_t nd_procnum; /* RPC # */ 493 int nd_stable; /* storage type */ 494 int nd_flag; /* nd_flag */ 495 int nd_len; /* Length of this write */ 496 int nd_repstat; /* Reply status */ 497 u_int32_t nd_retxid; /* Reply xid */ 498 u_int32_t nd_duration; /* Lease duration */ 499 struct timeval nd_starttime; /* Time RPC initiated */ 500 fhandle_t nd_fh; /* File handle */ 501 struct ucred nd_cr; /* Credentials */ 502 }; 503 504 /* Bits for "nd_flag" */ 505 #define ND_READ LEASE_READ 506 #define ND_WRITE LEASE_WRITE 507 #define ND_CHECK 0x04 508 #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) 509 #define ND_NFSV3 0x08 510 #define ND_NQNFS 0x10 511 #define ND_KERBNICK 0x20 512 #define ND_KERBFULL 0x40 513 #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) 514 515 TAILQ_HEAD(, nfsd) nfsd_head; 516 int nfsd_head_flag; 517 #define NFSD_CHECKSLP 0x01 518 519 /* 520 * These macros compare nfsrv_descript structures. 521 */ 522 #define NFSW_CONTIG(o, n) \ 523 ((o)->nd_eoff >= (n)->nd_off && \ 524 !memcmp((caddr_t)&(o)->nd_fh, (caddr_t)&(n)->nd_fh, NFSX_V3FH)) 525 526 #define NFSW_SAMECRED(o, n) \ 527 (((o)->nd_flag & ND_KERBAUTH) == ((n)->nd_flag & ND_KERBAUTH) && \ 528 !memcmp((caddr_t)&(o)->nd_cr, (caddr_t)&(n)->nd_cr, \ 529 sizeof (struct ucred))) 530 531 /* 532 * Defines for WebNFS 533 */ 534 535 #define WEBNFS_ESC_CHAR '%' 536 #define WEBNFS_SPECCHAR_START 0x80 537 538 #define WEBNFS_NATIVE_CHAR 0x80 539 /* 540 * .. 541 * Possibly more here in the future. 542 */ 543 544 /* 545 * Macro for converting escape characters in WebNFS pathnames. 546 * Should really be in libkern. 547 */ 548 549 #define HEXTOC(c) \ 550 ((c) >= 'a' ? ((c) - ('a' - 10)) : \ 551 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0'))) 552 #define HEXSTRTOI(p) \ 553 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1])) 554 #endif /* _KERNEL */ 555 556 #endif /* _NFS_NFS_H */ 557
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