nfs.h revision 1.22.2.3
1 /* $NetBSD: nfs.h,v 1.22.2.3 2001/08/16 16:03:46 tv 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 #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) 119 #define NFS_SRVMAXDATA(n) \ 120 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ 121 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) 122 123 /* 124 * The VA_EXCLUSIVE flag should be added for va_vaflags and set for an 125 * exclusive create. 126 */ 127 #ifndef VA_EXCLUSIVE 128 #define VA_EXCLUSIVE 0 129 #endif 130 131 /* 132 * The B_INVAFTERWRITE flag should be set to whatever is required by the 133 * buffer cache code to say "Invalidate the block after it is written back". 134 */ 135 #define B_INVAFTERWRITE B_INVAL 136 137 /* 138 * The IO_METASYNC flag should be implemented for local file systems. 139 * (Until then, it is nothin at all.) 140 */ 141 #ifndef IO_METASYNC 142 #define IO_METASYNC 0 143 #endif 144 145 /* 146 * Set the attribute timeout based on how recently the file has been modified. 147 */ 148 #define NFS_ATTRTIMEO(np) \ 149 ((((np)->n_flag & NMODIFIED) || \ 150 (time.tv_sec - (np)->n_mtime) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \ 151 ((time.tv_sec - (np)->n_mtime) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \ 152 (time.tv_sec - (np)->n_mtime) / 10)) 153 154 /* 155 * Expected allocation sizes for major data structures. If the actual size 156 * of the structure exceeds these sizes, then malloc() will be allocating 157 * almost twice the memory required. This is used in nfs_init() to warn 158 * the sysadmin that the size of a structure should be reduced. 159 * (These sizes are always a power of 2. If the kernel malloc() changes 160 * to one that does not allocate space in powers of 2 size, then this all 161 * becomes bunk!) 162 */ 163 #define NFS_NODEALLOC 256 164 #define NFS_MNTALLOC 512 165 #define NFS_SVCALLOC 256 166 #define NFS_UIDALLOC 128 167 168 /* 169 * Structures for the nfssvc(2) syscall. Not that anyone but nfsd and mount_nfs 170 * should ever try and use it. 171 */ 172 struct nfsd_args { 173 int sock; /* Socket to serve */ 174 caddr_t name; /* Client addr for connection based sockets */ 175 int namelen; /* Length of name */ 176 }; 177 178 struct nfsd_srvargs { 179 struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ 180 uid_t nsd_uid; /* Effective uid mapped to cred */ 181 u_int32_t nsd_haddr; /* Ip address of client */ 182 struct ucred nsd_cr; /* Cred. uid maps to */ 183 int nsd_authlen; /* Length of auth string (ret) */ 184 u_char *nsd_authstr; /* Auth string (ret) */ 185 int nsd_verflen; /* and the verfier */ 186 u_char *nsd_verfstr; 187 struct timeval nsd_timestamp; /* timestamp from verifier */ 188 u_int32_t nsd_ttl; /* credential ttl (sec) */ 189 NFSKERBKEY_T nsd_key; /* Session key */ 190 }; 191 192 struct nfsd_cargs { 193 char *ncd_dirp; /* Mount dir path */ 194 uid_t ncd_authuid; /* Effective uid */ 195 int ncd_authtype; /* Type of authenticator */ 196 u_int ncd_authlen; /* Length of authenticator string */ 197 u_char *ncd_authstr; /* Authenticator string */ 198 u_int ncd_verflen; /* and the verifier */ 199 u_char *ncd_verfstr; 200 NFSKERBKEY_T ncd_key; /* Session key */ 201 }; 202 203 /* 204 * Stats structure 205 */ 206 struct nfsstats { 207 int attrcache_hits; 208 int attrcache_misses; 209 int lookupcache_hits; 210 int lookupcache_misses; 211 int direofcache_hits; 212 int direofcache_misses; 213 int biocache_reads; 214 int read_bios; 215 int read_physios; 216 int biocache_writes; 217 int write_bios; 218 int write_physios; 219 int biocache_readlinks; 220 int readlink_bios; 221 int biocache_readdirs; 222 int readdir_bios; 223 int rpccnt[NFS_NPROCS]; 224 int rpcretries; 225 int srvrpccnt[NFS_NPROCS]; 226 int srvrpc_errs; 227 int srv_errs; 228 int rpcrequests; 229 int rpctimeouts; 230 int rpcunexpected; 231 int rpcinvalid; 232 int srvcache_inproghits; 233 int srvcache_idemdonehits; 234 int srvcache_nonidemdonehits; 235 int srvcache_misses; 236 int srvnqnfs_leases; 237 int srvnqnfs_maxleases; 238 int srvnqnfs_getleases; 239 int srvvop_writes; 240 }; 241 242 /* 243 * Flags for nfssvc() system call. 244 */ 245 #define NFSSVC_BIOD 0x002 246 #define NFSSVC_NFSD 0x004 247 #define NFSSVC_ADDSOCK 0x008 248 #define NFSSVC_AUTHIN 0x010 249 #define NFSSVC_GOTAUTH 0x040 250 #define NFSSVC_AUTHINFAIL 0x080 251 #define NFSSVC_MNTD 0x100 252 253 /* 254 * fs.nfs sysctl(3) identifiers 255 */ 256 #define NFS_NFSSTATS 1 /* struct: struct nfsstats */ 257 #define NFS_IOTHREADS 2 /* number of io threads */ 258 #define NFS_MAXID 3 259 260 #define NFS_NAMES { \ 261 { 0, 0 }, \ 262 { "nfsstats", CTLTYPE_STRUCT }, \ 263 { "iothreads", CTLTYPE_INT }, \ 264 } 265 266 /* 267 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts. 268 * What should be in this set is open to debate, but I believe that since 269 * I/O system calls on ufs are never interrupted by signals the set should 270 * be minimal. My reasoning is that many current programs that use signals 271 * such as SIGALRM will not expect file I/O system calls to be interrupted 272 * by them and break. 273 */ 274 #ifdef _KERNEL 275 276 struct uio; struct buf; struct vattr; struct nameidata; /* XXX */ 277 278 /* 279 * Socket errors ignored for connectionless sockets?? 280 * For now, ignore them all 281 */ 282 #define NFSIGNORE_SOERROR(s, e) \ 283 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \ 284 ((s) & PR_CONNREQUIRED) == 0) 285 286 /* 287 * Nfs outstanding request list element 288 */ 289 struct nfsreq { 290 TAILQ_ENTRY(nfsreq) r_chain; 291 struct mbuf *r_mreq; 292 struct mbuf *r_mrep; 293 struct mbuf *r_md; 294 caddr_t r_dpos; 295 struct nfsmount *r_nmp; 296 struct vnode *r_vp; 297 u_int32_t r_xid; 298 int r_flags; /* flags on request, see below */ 299 int r_retry; /* max retransmission count */ 300 int r_rexmit; /* current retrans count */ 301 int r_timer; /* tick counter on reply */ 302 u_int32_t r_procnum; /* NFS procedure number */ 303 int r_rtt; /* RTT for rpc */ 304 struct proc *r_procp; /* Proc that did I/O system call */ 305 }; 306 307 /* 308 * Queue head for nfsreq's 309 */ 310 TAILQ_HEAD(, nfsreq) nfs_reqq; 311 312 /* Flag values for r_flags */ 313 #define R_TIMING 0x01 /* timing request (in mntp) */ 314 #define R_SENT 0x02 /* request has been sent */ 315 #define R_SOFTTERM 0x04 /* soft mnt, too many retries */ 316 #define R_INTR 0x08 /* intr mnt, signal pending */ 317 #define R_SOCKERR 0x10 /* Fatal error on socket */ 318 #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ 319 #define R_MUSTRESEND 0x40 /* Must resend request */ 320 #define R_GETONEREP 0x80 /* Probe for one reply only */ 321 322 /* 323 * A list of nfssvc_sock structures is maintained with all the sockets 324 * that require service by the nfsd. 325 * The nfsuid structs hang off of the nfssvc_sock structs in both lru 326 * and uid hash lists. 327 */ 328 #ifndef NFS_UIDHASHSIZ 329 #define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */ 330 #endif 331 #define NUIDHASH(sock, uid) \ 332 (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ]) 333 #ifndef NFS_WDELAYHASHSIZ 334 #define NFS_WDELAYHASHSIZ 16 /* and with this */ 335 #endif 336 #define NWDELAYHASH(sock, f) \ 337 (&(sock)->ns_wdelayhashtbl[(*((u_int32_t *)(f))) % NFS_WDELAYHASHSIZ]) 338 #ifndef NFS_MUIDHASHSIZ 339 #define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */ 340 #endif 341 #define NMUIDHASH(nmp, uid) \ 342 (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ]) 343 #define NFSNOHASH(fhsum) \ 344 (&nfsnodehashtbl[(fhsum) & nfsnodehash]) 345 346 #ifndef NFS_DIRHASHSIZ 347 #define NFS_DIRHASHSIZ 64 348 #endif 349 #define NFSDIRHASH(np, off) \ 350 (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)]) 351 352 /* 353 * Macros for storing/retrieving cookies into directory buffers. 354 */ 355 #define NFS_STASHCOOKIE(dp,off) \ 356 *((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t))) = off 357 #define NFS_GETCOOKIE(dp) \ 358 (*((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t)))) 359 #define NFS_STASHCOOKIE32(dp, val) \ 360 *((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 361 sizeof (int))) = val 362 #define NFS_GETCOOKIE32(dp) \ 363 (*((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \ 364 sizeof (int)))) 365 366 /* 367 * Flags passed to nfs_bioread(). 368 */ 369 #define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */ 370 371 /* 372 * Network address hash list element 373 */ 374 union nethostaddr { 375 u_int32_t had_inetaddr; 376 struct mbuf *had_nam; 377 }; 378 379 struct nfsuid { 380 TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */ 381 LIST_ENTRY(nfsuid) nu_hash; /* Hash list */ 382 int nu_flag; /* Flags */ 383 union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ 384 struct ucred nu_cr; /* Cred uid mapped to */ 385 int nu_expire; /* Expiry time (sec) */ 386 struct timeval nu_timestamp; /* Kerb. timestamp */ 387 u_int32_t nu_nickname; /* Nickname on server */ 388 NFSKERBKEY_T nu_key; /* and session key */ 389 }; 390 391 #define nu_inetaddr nu_haddr.had_inetaddr 392 #define nu_nam nu_haddr.had_nam 393 /* Bits for nu_flag */ 394 #define NU_INETADDR 0x1 395 #define NU_NAM 0x2 396 #ifdef INET6 397 #define NU_NETFAM(u) \ 398 (((u)->nu_flag & NU_INETADDR) ? \ 399 (((u)->nu_flag & NU_NAM) ? AF_INET6 : AF_INET) : AF_ISO) 400 #else 401 #define NU_NETFAM(u) (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_ISO) 402 #endif 403 404 struct nfssvc_sock { 405 TAILQ_ENTRY(nfssvc_sock) ns_chain; /* List of all nfssvc_sock's */ 406 TAILQ_HEAD(, nfsuid) ns_uidlruhead; 407 struct file *ns_fp; 408 struct socket *ns_so; 409 struct mbuf *ns_nam; 410 struct mbuf *ns_raw; 411 struct mbuf *ns_rawend; 412 struct mbuf *ns_rec; 413 struct mbuf *ns_recend; 414 struct mbuf *ns_frag; 415 int ns_flag; 416 int ns_solock; 417 int ns_cc; 418 int ns_reclen; 419 int ns_numuids; 420 u_int32_t ns_sref; 421 LIST_HEAD(, nfsrv_descript) ns_tq; /* Write gather lists */ 422 LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ]; 423 LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; 424 }; 425 426 /* Bits for "ns_flag" */ 427 #define SLP_VALID 0x01 428 #define SLP_DOREC 0x02 429 #define SLP_NEEDQ 0x04 430 #define SLP_DISCONN 0x08 431 #define SLP_GETSTREAM 0x10 432 #define SLP_LASTFRAG 0x20 433 #define SLP_ALLFLAGS 0xff 434 435 TAILQ_HEAD(, nfssvc_sock) nfssvc_sockhead; 436 int nfssvc_sockhead_flag; 437 #define SLP_INIT 0x01 438 #define SLP_WANTINIT 0x02 439 440 /* 441 * One of these structures is allocated for each nfsd. 442 */ 443 struct nfsd { 444 TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */ 445 int nfsd_flag; /* NFSD_ flags */ 446 struct nfssvc_sock *nfsd_slp; /* Current socket */ 447 int nfsd_authlen; /* Authenticator len */ 448 u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ 449 int nfsd_verflen; /* and the Verifier */ 450 u_char nfsd_verfstr[RPCVERF_MAXSIZ]; 451 struct proc *nfsd_procp; /* Proc ptr */ 452 struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ 453 }; 454 455 /* Bits for "nfsd_flag" */ 456 #define NFSD_WAITING 0x01 457 #define NFSD_REQINPROG 0x02 458 #define NFSD_NEEDAUTH 0x04 459 #define NFSD_AUTHFAIL 0x08 460 461 /* 462 * This structure is used by the server for describing each request. 463 * Some fields are used only when write request gathering is performed. 464 */ 465 struct nfsrv_descript { 466 u_quad_t nd_time; /* Write deadline (usec) */ 467 off_t nd_off; /* Start byte offset */ 468 off_t nd_eoff; /* and end byte offset */ 469 LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ 470 LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ 471 LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ 472 struct mbuf *nd_mrep; /* Request mbuf list */ 473 struct mbuf *nd_md; /* Current dissect mbuf */ 474 struct mbuf *nd_mreq; /* Reply mbuf list */ 475 struct mbuf *nd_nam; /* and socket addr */ 476 struct mbuf *nd_nam2; /* return socket addr */ 477 caddr_t nd_dpos; /* Current dissect pos */ 478 u_int32_t nd_procnum; /* RPC # */ 479 int nd_stable; /* storage type */ 480 int nd_flag; /* nd_flag */ 481 int nd_len; /* Length of this write */ 482 int nd_repstat; /* Reply status */ 483 u_int32_t nd_retxid; /* Reply xid */ 484 u_int32_t nd_duration; /* Lease duration */ 485 struct timeval nd_starttime; /* Time RPC initiated */ 486 fhandle_t nd_fh; /* File handle */ 487 struct ucred nd_cr; /* Credentials */ 488 }; 489 490 /* Bits for "nd_flag" */ 491 #define ND_READ LEASE_READ 492 #define ND_WRITE LEASE_WRITE 493 #define ND_CHECK 0x04 494 #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) 495 #define ND_NFSV3 0x08 496 #define ND_NQNFS 0x10 497 #define ND_KERBNICK 0x20 498 #define ND_KERBFULL 0x40 499 #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) 500 501 TAILQ_HEAD(, nfsd) nfsd_head; 502 int nfsd_head_flag; 503 #define NFSD_CHECKSLP 0x01 504 505 /* 506 * These macros compare nfsrv_descript structures. 507 */ 508 #define NFSW_CONTIG(o, n) \ 509 ((o)->nd_eoff >= (n)->nd_off && \ 510 !memcmp((caddr_t)&(o)->nd_fh, (caddr_t)&(n)->nd_fh, NFSX_V3FH)) 511 512 #define NFSW_SAMECRED(o, n) \ 513 (((o)->nd_flag & ND_KERBAUTH) == ((n)->nd_flag & ND_KERBAUTH) && \ 514 !memcmp((caddr_t)&(o)->nd_cr, (caddr_t)&(n)->nd_cr, \ 515 sizeof (struct ucred))) 516 517 /* 518 * Defines for WebNFS 519 */ 520 521 #define WEBNFS_ESC_CHAR '%' 522 #define WEBNFS_SPECCHAR_START 0x80 523 524 #define WEBNFS_NATIVE_CHAR 0x80 525 /* 526 * .. 527 * Possibly more here in the future. 528 */ 529 530 /* 531 * Macro for converting escape characters in WebNFS pathnames. 532 * Should really be in libkern. 533 */ 534 535 #define HEXTOC(c) \ 536 ((c) >= 'a' ? ((c) - ('a' - 10)) : \ 537 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0'))) 538 #define HEXSTRTOI(p) \ 539 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1])) 540 #endif /* _KERNEL */ 541 542 #endif /* _NFS_NFS_H */ 543
Indexes created Wed Oct 15 03:09:54 GMT 2025