nfs.h revision 1.20.10.4
1 /* $NetBSD: nfs.h,v 1.20.10.4 2001/04/21 17:47:01 bouyer 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 #define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */ 101 #define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */ 102 103 /* 104 * Maximum number of directory entries cached per NFS node, to avoid 105 * having this grow without bounds on very large directories. The 106 * minimum size to get reasonable performance for emulated binaries 107 * is the maximum number of entries that fits in NFS_DIRBLKSIZ. 108 * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36. 109 */ 110 #define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14) 111 112 /* 113 * Oddballs 114 */ 115 #define NMOD(a) ((a) % nfs_asyncdaemons) 116 #define NFS_CMPFH(n, f, s) \ 117 ((n)->n_fhsize == (s) && !memcmp((caddr_t)(n)->n_fhp, (caddr_t)(f), (s))) 118 #ifdef NFS_V2_ONLY 119 #define NFS_ISV3(v) (0) 120 #else 121 #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) 122 #endif 123 #define NFS_SRVMAXDATA(n) \ 124 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ 125 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) 126 127 /* 128 * The VA_EXCLUSIVE flag should be added for va_vaflags and set for an 129 * exclusive create. 130 */ 131 #ifndef VA_EXCLUSIVE 132 #define VA_EXCLUSIVE 0 133 #endif 134 135 /* 136 * Use the vm_page flag reserved for pager use to indicate pages 137 * which have been written to the server but not yet committed. 138 */ 139 #define PG_NEEDCOMMIT PG_PAGER1 140 141 /* 142 * The IO_METASYNC flag should be implemented for local file systems. 143 * (Until then, it is nothin at all.) 144 */ 145 #ifndef IO_METASYNC 146 #define IO_METASYNC 0 147 #endif 148 149 /* 150 * Set the attribute timeout based on how recently the file has been modified. 151 */ 152 #define NFS_ATTRTIMEO(np) \ 153 ((((np)->n_flag & NMODIFIED) || \ 154 (time.tv_sec - (np)->n_mtime) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \ 155 ((time.tv_sec - (np)->n_mtime) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \ 156 (time.tv_sec - (np)->n_mtime) / 10)) 157 158 /* 159 * Expected allocation sizes for major data structures. If the actual size 160 * of the structure exceeds these sizes, then malloc() will be allocating 161 * almost twice the memory required. This is used in nfs_init() to warn 162 * the sysadmin that the size of a structure should be reduced. 163 * (These sizes are always a power of 2. If the kernel malloc() changes 164 * to one that does not allocate space in powers of 2 size, then this all 165 * becomes bunk!) 166 */ 167 #define NFS_NODEALLOC 256 168 #define NFS_MNTALLOC 512 169 #define NFS_SVCALLOC 256 170 #define NFS_UIDALLOC 128 171 172 /* 173 * Structures for the nfssvc(2) syscall. Not that anyone but nfsd and mount_nfs 174 * should ever try and use it. 175 */ 176 struct nfsd_args { 177 int sock; /* Socket to serve */ 178 caddr_t name; /* Client addr for connection based sockets */ 179 int namelen; /* Length of name */ 180 }; 181 182 struct nfsd_srvargs { 183 struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ 184 uid_t nsd_uid; /* Effective uid mapped to cred */ 185 u_int32_t nsd_haddr; /* Ip address of client */ 186 struct ucred nsd_cr; /* Cred. uid maps to */ 187 int nsd_authlen; /* Length of auth string (ret) */ 188 u_char *nsd_authstr; /* Auth string (ret) */ 189 int nsd_verflen; /* and the verfier */ 190 u_char *nsd_verfstr; 191 struct timeval nsd_timestamp; /* timestamp from verifier */ 192 u_int32_t nsd_ttl; /* credential ttl (sec) */ 193 NFSKERBKEY_T nsd_key; /* Session key */ 194 }; 195 196 struct nfsd_cargs { 197 char *ncd_dirp; /* Mount dir path */ 198 uid_t ncd_authuid; /* Effective uid */ 199 int ncd_authtype; /* Type of authenticator */ 200 int ncd_authlen; /* Length of authenticator string */ 201 u_char *ncd_authstr; /* Authenticator string */ 202 int ncd_verflen; /* and the verifier */ 203 u_char *ncd_verfstr; 204 NFSKERBKEY_T ncd_key; /* Session key */ 205 }; 206 207 /* 208 * Stats structure 209 */ 210 struct nfsstats { 211 int attrcache_hits; 212 int attrcache_misses; 213 int lookupcache_hits; 214 int lookupcache_misses; 215 int direofcache_hits; 216 int direofcache_misses; 217 int biocache_reads; 218 int read_bios; 219 int read_physios; 220 int biocache_writes; 221 int write_bios; 222 int write_physios; 223 int biocache_readlinks; 224 int readlink_bios; 225 int biocache_readdirs; 226 int readdir_bios; 227 int rpccnt[NFS_NPROCS]; 228 int rpcretries; 229 int srvrpccnt[NFS_NPROCS]; 230 int srvrpc_errs; 231 int srv_errs; 232 int rpcrequests; 233 int rpctimeouts; 234 int rpcunexpected; 235 int rpcinvalid; 236 int srvcache_inproghits; 237 int srvcache_idemdonehits; 238 int srvcache_nonidemdonehits; 239 int srvcache_misses; 240 int srvnqnfs_leases; 241 int srvnqnfs_maxleases; 242 int srvnqnfs_getleases; 243 int srvvop_writes; 244 }; 245 246 /* 247 * Flags for nfssvc() system call. 248 */ 249 #define NFSSVC_BIOD 0x002 250 #define NFSSVC_NFSD 0x004 251 #define NFSSVC_ADDSOCK 0x008 252 #define NFSSVC_AUTHIN 0x010 253 #define NFSSVC_GOTAUTH 0x040 254 #define NFSSVC_AUTHINFAIL 0x080 255 #define NFSSVC_MNTD 0x100 256 257 /* 258 * fs.nfs sysctl(3) identifiers 259 */ 260 #define NFS_NFSSTATS 1 /* struct: struct nfsstats */ 261 #define NFS_IOTHREADS 2 /* number of io threads */ 262 #define NFS_MAXID 3 263 264 #define NFS_NAMES { \ 265 { 0, 0 }, \ 266 { "nfsstats", CTLTYPE_STRUCT }, \ 267 { "iothreads", CTLTYPE_INT }, \ 268 } 269 270 /* 271 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts. 272 * What should be in this set is open to debate, but I believe that since 273 * I/O system calls on ufs are never interrupted by signals the set should 274 * be minimal. My reasoning is that many current programs that use signals 275 * such as SIGALRM will not expect file I/O system calls to be interrupted 276 * by them and break. 277 */ 278 #ifdef _KERNEL 279 280 struct uio; struct buf; struct vattr; struct nameidata; /* XXX */ 281 282 /* 283 * Socket errors ignored for connectionless sockets?? 284 * For now, ignore them all 285 */ 286 #define NFSIGNORE_SOERROR(s, e) \ 287 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \ 288 ((s) & PR_CONNREQUIRED) == 0) 289 290 /* 291 * Nfs outstanding request list element 292 */ 293 struct nfsreq { 294 TAILQ_ENTRY(nfsreq) r_chain; 295 struct mbuf *r_mreq; 296 struct mbuf *r_mrep; 297 struct mbuf *r_md; 298 caddr_t r_dpos; 299 struct nfsmount *r_nmp; 300 struct vnode *r_vp; 301 u_int32_t r_xid; 302 int r_flags; /* flags on request, see below */ 303 int r_retry; /* max retransmission count */ 304 int r_rexmit; /* current retrans count */ 305 int r_timer; /* tick counter on reply */ 306 u_int32_t r_procnum; /* NFS procedure number */ 307 int r_rtt; /* RTT for rpc */ 308 struct proc *r_procp; /* Proc that did I/O system call */ 309 }; 310 311 /* 312 * Queue head for nfsreq's 313 */ 314 TAILQ_HEAD(, nfsreq) nfs_reqq; 315 316 /* Flag values for r_flags */ 317 #define R_TIMING 0x01 /* timing request (in mntp) */ 318 #define R_SENT 0x02 /* request has been sent */ 319 #define R_SOFTTERM 0x04 /* soft mnt, too many retries */ 320 #define R_INTR 0x08 /* intr mnt, signal pending */ 321 #define R_SOCKERR 0x10 /* Fatal error on socket */ 322 #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ 323 #define R_MUSTRESEND 0x40 /* Must resend request */ 324 #define R_GETONEREP 0x80 /* Probe for one reply only */ 325 326 /* 327 * A list of nfssvc_sock structures is maintained with all the sockets 328 * that require service by the nfsd. 329 * The nfsuid structs hang off of the nfssvc_sock structs in both lru 330 * and uid hash lists. 331 */ 332 #ifndef NFS_UIDHASHSIZ 333 #define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */ 334 #endif 335 #define NUIDHASH(sock, uid) \ 336 (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ]) 337 #ifndef NFS_WDELAYHASHSIZ 338 #define NFS_WDELAYHASHSIZ 16 /* and with this */ 339 #endif 340 #define NWDELAYHASH(sock, f) \ 341 (&(sock)->ns_wdelayhashtbl[(*((u_int32_t *)(f))) % NFS_WDELAYHASHSIZ]) 342 #ifndef NFS_MUIDHASHSIZ 343 #define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */ 344 #endif 345 #define NMUIDHASH(nmp, uid) \ 346 (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ]) 347 #define NFSNOHASH(fhsum) \ 348 (&nfsnodehashtbl[(fhsum) & nfsnodehash]) 349 350 #ifndef NFS_DIRHASHSIZ 351 #define NFS_DIRHASHSIZ 64 352 #endif 353 #define NFSDIRHASH(np, off) \ 354 (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)]) 355 356 /* 357 * Macros for storing/retrieving cookies into directory buffers. 358 */ 359 #define NFS_STASHCOOKIE(dp,off) \ 360 *((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t))) = off 361 #define NFS_GETCOOKIE(dp) \ 362 (*((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t)))) 363 #define NFS_STASHCOOKIE32(dp, val) \ 364 *((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 365 sizeof (int))) = val 366 #define NFS_GETCOOKIE32(dp) \ 367 (*((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 368 sizeof (int)))) 369 370 /* 371 * Flags passed to nfs_bioread(). 372 */ 373 #define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */ 374 375 /* 376 * Network address hash list element 377 */ 378 union nethostaddr { 379 u_int32_t had_inetaddr; 380 struct mbuf *had_nam; 381 }; 382 383 struct nfsuid { 384 TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */ 385 LIST_ENTRY(nfsuid) nu_hash; /* Hash list */ 386 int nu_flag; /* Flags */ 387 union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ 388 struct ucred nu_cr; /* Cred uid mapped to */ 389 int nu_expire; /* Expiry time (sec) */ 390 struct timeval nu_timestamp; /* Kerb. timestamp */ 391 u_int32_t nu_nickname; /* Nickname on server */ 392 NFSKERBKEY_T nu_key; /* and session key */ 393 }; 394 395 #define nu_inetaddr nu_haddr.had_inetaddr 396 #define nu_nam nu_haddr.had_nam 397 /* Bits for nu_flag */ 398 #define NU_INETADDR 0x1 399 #define NU_NAM 0x2 400 #ifdef INET6 401 #define NU_NETFAM(u) \ 402 (((u)->nu_flag & NU_INETADDR) ? \ 403 (((u)->nu_flag & NU_NAM) ? AF_INET6 : AF_INET) : AF_ISO) 404 #else 405 #define NU_NETFAM(u) (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_ISO) 406 #endif 407 408 struct nfssvc_sock { 409 TAILQ_ENTRY(nfssvc_sock) ns_chain; /* List of all nfssvc_sock's */ 410 TAILQ_HEAD(, nfsuid) ns_uidlruhead; 411 struct file *ns_fp; 412 struct socket *ns_so; 413 struct mbuf *ns_nam; 414 struct mbuf *ns_raw; 415 struct mbuf *ns_rawend; 416 struct mbuf *ns_rec; 417 struct mbuf *ns_recend; 418 struct mbuf *ns_frag; 419 int ns_flag; 420 int ns_solock; 421 int ns_cc; 422 int ns_reclen; 423 int ns_numuids; 424 u_int32_t ns_sref; 425 LIST_HEAD(, nfsrv_descript) ns_tq; /* Write gather lists */ 426 LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ]; 427 LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; 428 }; 429 430 /* Bits for "ns_flag" */ 431 #define SLP_VALID 0x01 432 #define SLP_DOREC 0x02 433 #define SLP_NEEDQ 0x04 434 #define SLP_DISCONN 0x08 435 #define SLP_GETSTREAM 0x10 436 #define SLP_LASTFRAG 0x20 437 #define SLP_ALLFLAGS 0xff 438 439 TAILQ_HEAD(, nfssvc_sock) nfssvc_sockhead; 440 int nfssvc_sockhead_flag; 441 #define SLP_INIT 0x01 442 #define SLP_WANTINIT 0x02 443 444 /* 445 * One of these structures is allocated for each nfsd. 446 */ 447 struct nfsd { 448 TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */ 449 int nfsd_flag; /* NFSD_ flags */ 450 struct nfssvc_sock *nfsd_slp; /* Current socket */ 451 int nfsd_authlen; /* Authenticator len */ 452 u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ 453 int nfsd_verflen; /* and the Verifier */ 454 u_char nfsd_verfstr[RPCVERF_MAXSIZ]; 455 struct proc *nfsd_procp; /* Proc ptr */ 456 struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ 457 }; 458 459 /* Bits for "nfsd_flag" */ 460 #define NFSD_WAITING 0x01 461 #define NFSD_REQINPROG 0x02 462 #define NFSD_NEEDAUTH 0x04 463 #define NFSD_AUTHFAIL 0x08 464 465 /* 466 * This structure is used by the server for describing each request. 467 * Some fields are used only when write request gathering is performed. 468 */ 469 struct nfsrv_descript { 470 u_quad_t nd_time; /* Write deadline (usec) */ 471 off_t nd_off; /* Start byte offset */ 472 off_t nd_eoff; /* and end byte offset */ 473 LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ 474 LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ 475 LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ 476 struct mbuf *nd_mrep; /* Request mbuf list */ 477 struct mbuf *nd_md; /* Current dissect mbuf */ 478 struct mbuf *nd_mreq; /* Reply mbuf list */ 479 struct mbuf *nd_nam; /* and socket addr */ 480 struct mbuf *nd_nam2; /* return socket addr */ 481 caddr_t nd_dpos; /* Current dissect pos */ 482 u_int32_t nd_procnum; /* RPC # */ 483 int nd_stable; /* storage type */ 484 int nd_flag; /* nd_flag */ 485 int nd_len; /* Length of this write */ 486 int nd_repstat; /* Reply status */ 487 u_int32_t nd_retxid; /* Reply xid */ 488 u_int32_t nd_duration; /* Lease duration */ 489 struct timeval nd_starttime; /* Time RPC initiated */ 490 fhandle_t nd_fh; /* File handle */ 491 struct ucred nd_cr; /* Credentials */ 492 }; 493 494 /* Bits for "nd_flag" */ 495 #define ND_READ LEASE_READ 496 #define ND_WRITE LEASE_WRITE 497 #define ND_CHECK 0x04 498 #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) 499 #define ND_NFSV3 0x08 500 #define ND_NQNFS 0x10 501 #define ND_KERBNICK 0x20 502 #define ND_KERBFULL 0x40 503 #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) 504 505 TAILQ_HEAD(, nfsd) nfsd_head; 506 int nfsd_head_flag; 507 #define NFSD_CHECKSLP 0x01 508 509 /* 510 * These macros compare nfsrv_descript structures. 511 */ 512 #define NFSW_CONTIG(o, n) \ 513 ((o)->nd_eoff >= (n)->nd_off && \ 514 !memcmp((caddr_t)&(o)->nd_fh, (caddr_t)&(n)->nd_fh, NFSX_V3FH)) 515 516 #define NFSW_SAMECRED(o, n) \ 517 (((o)->nd_flag & ND_KERBAUTH) == ((n)->nd_flag & ND_KERBAUTH) && \ 518 !memcmp((caddr_t)&(o)->nd_cr, (caddr_t)&(n)->nd_cr, \ 519 sizeof (struct ucred))) 520 521 /* 522 * Defines for WebNFS 523 */ 524 525 #define WEBNFS_ESC_CHAR '%' 526 #define WEBNFS_SPECCHAR_START 0x80 527 528 #define WEBNFS_NATIVE_CHAR 0x80 529 /* 530 * .. 531 * Possibly more here in the future. 532 */ 533 534 /* 535 * Macro for converting escape characters in WebNFS pathnames. 536 * Should really be in libkern. 537 */ 538 539 #define HEXTOC(c) \ 540 ((c) >= 'a' ? ((c) - ('a' - 10)) : \ 541 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0'))) 542 #define HEXSTRTOI(p) \ 543 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1])) 544 #endif /* _KERNEL */ 545 546 #endif /* _NFS_NFS_H */ 547
Indexes created Wed Oct 15 16:09:53 GMT 2025