nfs.h revision 1.26
1 /* $NetBSD: nfs.h,v 1.26 2001/03/25 02:22:30 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 #ifndef NFS_WSIZE 65 #define NFS_WSIZE 32768 /* Def. write data size */ 66 #endif 67 #ifndef NFS_RSIZE 68 #define NFS_RSIZE 32768 /* Def. read data size */ 69 #endif 70 #define NFS_READDIRSIZE 8192 /* Def. readdir size */ 71 #define NFS_DEFRAHEAD 2 /* Def. read ahead # blocks */ 72 #define NFS_MAXRAHEAD 4 /* Max. read ahead # blocks */ 73 #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */ 74 #define NFS_MAXASYNCDAEMON 20 /* Max. number async_daemons runable */ 75 #ifdef _KERNEL 76 extern int nfs_niothreads; /* Number of async_daemons desired */ 77 #endif 78 #define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */ 79 #ifndef NFS_GATHERDELAY 80 #define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */ 81 #endif 82 83 /* 84 * NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for 85 * NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount 86 * of data in those buffers, and thus the minimum amount of data 87 * that you can request. NFS_DIRFRAGSIZ should be no smaller than 88 * DIRBLKSIZ. 89 */ 90 91 #if 1 92 /* 93 * XXXUBC temp hack because of the removal of b_validend. 94 * eventually we'll store NFS VDIR data in the page cache as well, 95 * we'll fix this at that point. 96 */ 97 #define NFS_DIRBLKSIZ PAGE_SIZE 98 #define NFS_DIRFRAGSIZ PAGE_SIZE 99 #else 100 #define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */ 101 #define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */ 102 #endif 103 104 /* 105 * Maximum number of directory entries cached per NFS node, to avoid 106 * having this grow without bounds on very large directories. The 107 * minimum size to get reasonable performance for emulated binaries 108 * is the maximum number of entries that fits in NFS_DIRBLKSIZ. 109 * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36. 110 */ 111 #define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14) 112 113 /* 114 * Oddballs 115 */ 116 #define NMOD(a) ((a) % nfs_asyncdaemons) 117 #define NFS_CMPFH(n, f, s) \ 118 ((n)->n_fhsize == (s) && !memcmp((caddr_t)(n)->n_fhp, (caddr_t)(f), (s))) 119 #ifdef NFS_V2_ONLY 120 #define NFS_ISV3(v) (0) 121 #else 122 #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) 123 #endif 124 #define NFS_SRVMAXDATA(n) \ 125 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ 126 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) 127 128 /* 129 * The VA_EXCLUSIVE flag should be added for va_vaflags and set for an 130 * exclusive create. 131 */ 132 #ifndef VA_EXCLUSIVE 133 #define VA_EXCLUSIVE 0 134 #endif 135 136 /* 137 * Use the vm_page flag reserved for pager use to indicate pages 138 * which have been written to the server but not yet committed. 139 */ 140 #define PG_NEEDCOMMIT PG_PAGER1 141 142 /* 143 * The IO_METASYNC flag should be implemented for local file systems. 144 * (Until then, it is nothin at all.) 145 */ 146 #ifndef IO_METASYNC 147 #define IO_METASYNC 0 148 #endif 149 150 /* 151 * Set the attribute timeout based on how recently the file has been modified. 152 */ 153 #define NFS_ATTRTIMEO(np) \ 154 ((((np)->n_flag & NMODIFIED) || \ 155 (time.tv_sec - (np)->n_mtime) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \ 156 ((time.tv_sec - (np)->n_mtime) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \ 157 (time.tv_sec - (np)->n_mtime) / 10)) 158 159 /* 160 * Expected allocation sizes for major data structures. If the actual size 161 * of the structure exceeds these sizes, then malloc() will be allocating 162 * almost twice the memory required. This is used in nfs_init() to warn 163 * the sysadmin that the size of a structure should be reduced. 164 * (These sizes are always a power of 2. If the kernel malloc() changes 165 * to one that does not allocate space in powers of 2 size, then this all 166 * becomes bunk!) 167 */ 168 #define NFS_NODEALLOC 256 169 #define NFS_MNTALLOC 512 170 #define NFS_SVCALLOC 256 171 #define NFS_UIDALLOC 128 172 173 /* 174 * Structures for the nfssvc(2) syscall. Not that anyone but nfsd and mount_nfs 175 * should ever try and use it. 176 */ 177 struct nfsd_args { 178 int sock; /* Socket to serve */ 179 caddr_t name; /* Client addr for connection based sockets */ 180 int namelen; /* Length of name */ 181 }; 182 183 struct nfsd_srvargs { 184 struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ 185 uid_t nsd_uid; /* Effective uid mapped to cred */ 186 u_int32_t nsd_haddr; /* Ip address of client */ 187 struct ucred nsd_cr; /* Cred. uid maps to */ 188 int nsd_authlen; /* Length of auth string (ret) */ 189 u_char *nsd_authstr; /* Auth string (ret) */ 190 int nsd_verflen; /* and the verfier */ 191 u_char *nsd_verfstr; 192 struct timeval nsd_timestamp; /* timestamp from verifier */ 193 u_int32_t nsd_ttl; /* credential ttl (sec) */ 194 NFSKERBKEY_T nsd_key; /* Session key */ 195 }; 196 197 struct nfsd_cargs { 198 char *ncd_dirp; /* Mount dir path */ 199 uid_t ncd_authuid; /* Effective uid */ 200 int ncd_authtype; /* Type of authenticator */ 201 int ncd_authlen; /* Length of authenticator string */ 202 u_char *ncd_authstr; /* Authenticator string */ 203 int ncd_verflen; /* and the verifier */ 204 u_char *ncd_verfstr; 205 NFSKERBKEY_T ncd_key; /* Session key */ 206 }; 207 208 /* 209 * Stats structure 210 */ 211 struct nfsstats { 212 int attrcache_hits; 213 int attrcache_misses; 214 int lookupcache_hits; 215 int lookupcache_misses; 216 int direofcache_hits; 217 int direofcache_misses; 218 int biocache_reads; 219 int read_bios; 220 int read_physios; 221 int biocache_writes; 222 int write_bios; 223 int write_physios; 224 int biocache_readlinks; 225 int readlink_bios; 226 int biocache_readdirs; 227 int readdir_bios; 228 int rpccnt[NFS_NPROCS]; 229 int rpcretries; 230 int srvrpccnt[NFS_NPROCS]; 231 int srvrpc_errs; 232 int srv_errs; 233 int rpcrequests; 234 int rpctimeouts; 235 int rpcunexpected; 236 int rpcinvalid; 237 int srvcache_inproghits; 238 int srvcache_idemdonehits; 239 int srvcache_nonidemdonehits; 240 int srvcache_misses; 241 int srvnqnfs_leases; 242 int srvnqnfs_maxleases; 243 int srvnqnfs_getleases; 244 int srvvop_writes; 245 }; 246 247 /* 248 * Flags for nfssvc() system call. 249 */ 250 #define NFSSVC_BIOD 0x002 251 #define NFSSVC_NFSD 0x004 252 #define NFSSVC_ADDSOCK 0x008 253 #define NFSSVC_AUTHIN 0x010 254 #define NFSSVC_GOTAUTH 0x040 255 #define NFSSVC_AUTHINFAIL 0x080 256 #define NFSSVC_MNTD 0x100 257 258 /* 259 * fs.nfs sysctl(3) identifiers 260 */ 261 #define NFS_NFSSTATS 1 /* struct: struct nfsstats */ 262 #define NFS_IOTHREADS 2 /* number of io threads */ 263 #define NFS_MAXID 3 264 265 #define NFS_NAMES { \ 266 { 0, 0 }, \ 267 { "nfsstats", CTLTYPE_STRUCT }, \ 268 { "iothreads", CTLTYPE_INT }, \ 269 } 270 271 /* 272 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts. 273 * What should be in this set is open to debate, but I believe that since 274 * I/O system calls on ufs are never interrupted by signals the set should 275 * be minimal. My reasoning is that many current programs that use signals 276 * such as SIGALRM will not expect file I/O system calls to be interrupted 277 * by them and break. 278 */ 279 #ifdef _KERNEL 280 281 struct uio; struct buf; struct vattr; struct nameidata; /* XXX */ 282 283 /* 284 * Socket errors ignored for connectionless sockets?? 285 * For now, ignore them all 286 */ 287 #define NFSIGNORE_SOERROR(s, e) \ 288 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \ 289 ((s) & PR_CONNREQUIRED) == 0) 290 291 /* 292 * Nfs outstanding request list element 293 */ 294 struct nfsreq { 295 TAILQ_ENTRY(nfsreq) r_chain; 296 struct mbuf *r_mreq; 297 struct mbuf *r_mrep; 298 struct mbuf *r_md; 299 caddr_t r_dpos; 300 struct nfsmount *r_nmp; 301 struct vnode *r_vp; 302 u_int32_t r_xid; 303 int r_flags; /* flags on request, see below */ 304 int r_retry; /* max retransmission count */ 305 int r_rexmit; /* current retrans count */ 306 int r_timer; /* tick counter on reply */ 307 u_int32_t r_procnum; /* NFS procedure number */ 308 int r_rtt; /* RTT for rpc */ 309 struct proc *r_procp; /* Proc that did I/O system call */ 310 }; 311 312 /* 313 * Queue head for nfsreq's 314 */ 315 TAILQ_HEAD(, nfsreq) nfs_reqq; 316 317 /* Flag values for r_flags */ 318 #define R_TIMING 0x01 /* timing request (in mntp) */ 319 #define R_SENT 0x02 /* request has been sent */ 320 #define R_SOFTTERM 0x04 /* soft mnt, too many retries */ 321 #define R_INTR 0x08 /* intr mnt, signal pending */ 322 #define R_SOCKERR 0x10 /* Fatal error on socket */ 323 #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ 324 #define R_MUSTRESEND 0x40 /* Must resend request */ 325 #define R_GETONEREP 0x80 /* Probe for one reply only */ 326 327 /* 328 * A list of nfssvc_sock structures is maintained with all the sockets 329 * that require service by the nfsd. 330 * The nfsuid structs hang off of the nfssvc_sock structs in both lru 331 * and uid hash lists. 332 */ 333 #ifndef NFS_UIDHASHSIZ 334 #define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */ 335 #endif 336 #define NUIDHASH(sock, uid) \ 337 (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ]) 338 #ifndef NFS_WDELAYHASHSIZ 339 #define NFS_WDELAYHASHSIZ 16 /* and with this */ 340 #endif 341 #define NWDELAYHASH(sock, f) \ 342 (&(sock)->ns_wdelayhashtbl[(*((u_int32_t *)(f))) % NFS_WDELAYHASHSIZ]) 343 #ifndef NFS_MUIDHASHSIZ 344 #define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */ 345 #endif 346 #define NMUIDHASH(nmp, uid) \ 347 (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ]) 348 #define NFSNOHASH(fhsum) \ 349 (&nfsnodehashtbl[(fhsum) & nfsnodehash]) 350 351 #ifndef NFS_DIRHASHSIZ 352 #define NFS_DIRHASHSIZ 64 353 #endif 354 #define NFSDIRHASH(np, off) \ 355 (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)]) 356 357 /* 358 * Macros for storing/retrieving cookies into directory buffers. 359 */ 360 #define NFS_STASHCOOKIE(dp,off) \ 361 *((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t))) = off 362 #define NFS_GETCOOKIE(dp) \ 363 (*((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t)))) 364 #define NFS_STASHCOOKIE32(dp, val) \ 365 *((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 366 sizeof (int))) = val 367 #define NFS_GETCOOKIE32(dp) \ 368 (*((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 369 sizeof (int)))) 370 371 /* 372 * Flags passed to nfs_bioread(). 373 */ 374 #define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */ 375 376 /* 377 * Network address hash list element 378 */ 379 union nethostaddr { 380 u_int32_t had_inetaddr; 381 struct mbuf *had_nam; 382 }; 383 384 struct nfsuid { 385 TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */ 386 LIST_ENTRY(nfsuid) nu_hash; /* Hash list */ 387 int nu_flag; /* Flags */ 388 union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ 389 struct ucred nu_cr; /* Cred uid mapped to */ 390 int nu_expire; /* Expiry time (sec) */ 391 struct timeval nu_timestamp; /* Kerb. timestamp */ 392 u_int32_t nu_nickname; /* Nickname on server */ 393 NFSKERBKEY_T nu_key; /* and session key */ 394 }; 395 396 #define nu_inetaddr nu_haddr.had_inetaddr 397 #define nu_nam nu_haddr.had_nam 398 /* Bits for nu_flag */ 399 #define NU_INETADDR 0x1 400 #define NU_NAM 0x2 401 #ifdef INET6 402 #define NU_NETFAM(u) \ 403 (((u)->nu_flag & NU_INETADDR) ? \ 404 (((u)->nu_flag & NU_NAM) ? AF_INET6 : AF_INET) : AF_ISO) 405 #else 406 #define NU_NETFAM(u) (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_ISO) 407 #endif 408 409 struct nfssvc_sock { 410 TAILQ_ENTRY(nfssvc_sock) ns_chain; /* List of all nfssvc_sock's */ 411 TAILQ_HEAD(, nfsuid) ns_uidlruhead; 412 struct file *ns_fp; 413 struct socket *ns_so; 414 struct mbuf *ns_nam; 415 struct mbuf *ns_raw; 416 struct mbuf *ns_rawend; 417 struct mbuf *ns_rec; 418 struct mbuf *ns_recend; 419 struct mbuf *ns_frag; 420 int ns_flag; 421 int ns_solock; 422 int ns_cc; 423 int ns_reclen; 424 int ns_numuids; 425 u_int32_t ns_sref; 426 LIST_HEAD(, nfsrv_descript) ns_tq; /* Write gather lists */ 427 LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ]; 428 LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; 429 }; 430 431 /* Bits for "ns_flag" */ 432 #define SLP_VALID 0x01 433 #define SLP_DOREC 0x02 434 #define SLP_NEEDQ 0x04 435 #define SLP_DISCONN 0x08 436 #define SLP_GETSTREAM 0x10 437 #define SLP_LASTFRAG 0x20 438 #define SLP_ALLFLAGS 0xff 439 440 TAILQ_HEAD(, nfssvc_sock) nfssvc_sockhead; 441 int nfssvc_sockhead_flag; 442 #define SLP_INIT 0x01 443 #define SLP_WANTINIT 0x02 444 445 /* 446 * One of these structures is allocated for each nfsd. 447 */ 448 struct nfsd { 449 TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */ 450 int nfsd_flag; /* NFSD_ flags */ 451 struct nfssvc_sock *nfsd_slp; /* Current socket */ 452 int nfsd_authlen; /* Authenticator len */ 453 u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ 454 int nfsd_verflen; /* and the Verifier */ 455 u_char nfsd_verfstr[RPCVERF_MAXSIZ]; 456 struct proc *nfsd_procp; /* Proc ptr */ 457 struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ 458 }; 459 460 /* Bits for "nfsd_flag" */ 461 #define NFSD_WAITING 0x01 462 #define NFSD_REQINPROG 0x02 463 #define NFSD_NEEDAUTH 0x04 464 #define NFSD_AUTHFAIL 0x08 465 466 /* 467 * This structure is used by the server for describing each request. 468 * Some fields are used only when write request gathering is performed. 469 */ 470 struct nfsrv_descript { 471 u_quad_t nd_time; /* Write deadline (usec) */ 472 off_t nd_off; /* Start byte offset */ 473 off_t nd_eoff; /* and end byte offset */ 474 LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ 475 LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ 476 LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ 477 struct mbuf *nd_mrep; /* Request mbuf list */ 478 struct mbuf *nd_md; /* Current dissect mbuf */ 479 struct mbuf *nd_mreq; /* Reply mbuf list */ 480 struct mbuf *nd_nam; /* and socket addr */ 481 struct mbuf *nd_nam2; /* return socket addr */ 482 caddr_t nd_dpos; /* Current dissect pos */ 483 u_int32_t nd_procnum; /* RPC # */ 484 int nd_stable; /* storage type */ 485 int nd_flag; /* nd_flag */ 486 int nd_len; /* Length of this write */ 487 int nd_repstat; /* Reply status */ 488 u_int32_t nd_retxid; /* Reply xid */ 489 u_int32_t nd_duration; /* Lease duration */ 490 struct timeval nd_starttime; /* Time RPC initiated */ 491 fhandle_t nd_fh; /* File handle */ 492 struct ucred nd_cr; /* Credentials */ 493 }; 494 495 /* Bits for "nd_flag" */ 496 #define ND_READ LEASE_READ 497 #define ND_WRITE LEASE_WRITE 498 #define ND_CHECK 0x04 499 #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) 500 #define ND_NFSV3 0x08 501 #define ND_NQNFS 0x10 502 #define ND_KERBNICK 0x20 503 #define ND_KERBFULL 0x40 504 #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) 505 506 TAILQ_HEAD(, nfsd) nfsd_head; 507 int nfsd_head_flag; 508 #define NFSD_CHECKSLP 0x01 509 510 /* 511 * These macros compare nfsrv_descript structures. 512 */ 513 #define NFSW_CONTIG(o, n) \ 514 ((o)->nd_eoff >= (n)->nd_off && \ 515 !memcmp((caddr_t)&(o)->nd_fh, (caddr_t)&(n)->nd_fh, NFSX_V3FH)) 516 517 #define NFSW_SAMECRED(o, n) \ 518 (((o)->nd_flag & ND_KERBAUTH) == ((n)->nd_flag & ND_KERBAUTH) && \ 519 !memcmp((caddr_t)&(o)->nd_cr, (caddr_t)&(n)->nd_cr, \ 520 sizeof (struct ucred))) 521 522 /* 523 * Defines for WebNFS 524 */ 525 526 #define WEBNFS_ESC_CHAR '%' 527 #define WEBNFS_SPECCHAR_START 0x80 528 529 #define WEBNFS_NATIVE_CHAR 0x80 530 /* 531 * .. 532 * Possibly more here in the future. 533 */ 534 535 /* 536 * Macro for converting escape characters in WebNFS pathnames. 537 * Should really be in libkern. 538 */ 539 540 #define HEXTOC(c) \ 541 ((c) >= 'a' ? ((c) - ('a' - 10)) : \ 542 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0'))) 543 #define HEXSTRTOI(p) \ 544 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1])) 545 #endif /* _KERNEL */ 546 547 #endif /* _NFS_NFS_H */ 548
Indexes created Tue Sep 23 07:09:52 GMT 2025