| 1 | /* $NetBSD: nfs.h,v 1.75 2015/04/20 13:12:24 riastradh 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. Neither the name of the University nor the names of its contributors |
| 18 | * may be used to endorse or promote products derived from this software |
| 19 | * without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | * SUCH DAMAGE. |
| 32 | * |
| 33 | * @(#)nfs.h 8.4 (Berkeley) 5/1/95 |
| 34 | */ |
| 35 | |
| 36 | #ifndef _NFS_NFS_H_ |
| 37 | #define _NFS_NFS_H_ |
| 38 | |
| 39 | #ifdef _KERNEL |
| 40 | #include <sys/condvar.h> |
| 41 | #include <sys/fstypes.h> |
| 42 | #include <sys/mbuf.h> |
| 43 | #include <sys/mutex.h> |
| 44 | #endif |
| 45 | |
| 46 | /* |
| 47 | * Tunable constants for nfs |
| 48 | */ |
| 49 | |
| 50 | #define NFS_MAXIOVEC 34 |
| 51 | #define NFS_TICKINTVL 5 /* Desired time for a tick (msec) */ |
| 52 | #define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */ |
| 53 | #define NFS_TIMEO (3 * NFS_HZ) /* Default timeout = 3 seconds */ |
| 54 | #define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */ |
| 55 | #define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */ |
| 56 | #define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/ |
| 57 | #define NFS_MAXREXMIT 100 /* Stop counting after this many */ |
| 58 | #define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */ |
| 59 | #define NFS_RETRANS 10 /* Num of retrans for soft mounts */ |
| 60 | #define NFS_MAXGRPS 16 /* Max. size of groups list */ |
| 61 | #ifndef NFS_MINATTRTIMO |
| 62 | #define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */ |
| 63 | #endif |
| 64 | #ifndef NFS_MAXATTRTIMO |
| 65 | #define NFS_MAXATTRTIMO 60 |
| 66 | #endif |
| 67 | #define NFS_TRYLATERDEL 1 /* Initial try later delay (sec) */ |
| 68 | #define NFS_TRYLATERDELMAX (1*60) /* Maximum try later delay (sec) */ |
| 69 | #define NFS_TRYLATERDELMUL 2 /* Exponential backoff multiplier */ |
| 70 | |
| 71 | #define NFS_CWNDSCALE 256 |
| 72 | #define NFS_MAXCWND (NFS_CWNDSCALE * 32) |
| 73 | |
| 74 | /* |
| 75 | * These can be overridden through <machine/param.h>, included via |
| 76 | * <sys/param.h>. This means that <sys/param.h> should always be |
| 77 | * included before this file. |
| 78 | */ |
| 79 | #ifndef NFS_WSIZE |
| 80 | #define NFS_WSIZE 8192 /* Def. write data size */ |
| 81 | #endif |
| 82 | #ifndef NFS_RSIZE |
| 83 | #define NFS_RSIZE 8192 /* Def. read data size */ |
| 84 | #endif |
| 85 | #ifndef NFS_READDIRSIZE |
| 86 | #define NFS_READDIRSIZE 8192 /* Def. readdir size */ |
| 87 | #endif |
| 88 | |
| 89 | /* |
| 90 | * NFS client IO daemon threads. May be overridden by config options. |
| 91 | */ |
| 92 | #ifndef NFS_MAXASYNCDAEMON |
| 93 | #define NFS_MAXASYNCDAEMON 128 /* Max. number async_daemons runable */ |
| 94 | #endif |
| 95 | |
| 96 | /* |
| 97 | * NFS client read-ahead. May be overridden by config options. |
| 98 | * Should be no more than NFS_MAXASYNCDAEMON as each read-ahead operation |
| 99 | * requires one IO thread. |
| 100 | */ |
| 101 | #ifndef NFS_MAXRAHEAD |
| 102 | #define NFS_MAXRAHEAD 32 /* Max. read ahead # blocks */ |
| 103 | #endif |
| 104 | #define NFS_DEFRAHEAD 2 /* Def. read ahead # blocks */ |
| 105 | |
| 106 | #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */ |
| 107 | |
| 108 | #define NFS_DEFDEADTHRESH NFS_NEVERDEAD /* Default nm_deadthresh */ |
| 109 | #define NFS_NEVERDEAD 9 /* Greater than max. nm_timeouts */ |
| 110 | |
| 111 | #ifdef _KERNEL |
| 112 | extern int nfs_niothreads; /* Number of async_daemons desired */ |
| 113 | #ifndef NFS_DEFAULT_NIOTHREADS |
| 114 | #define NFS_DEFAULT_NIOTHREADS 4 |
| 115 | #endif |
| 116 | #endif |
| 117 | #define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */ |
| 118 | #ifndef NFS_GATHERDELAY |
| 119 | #define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */ |
| 120 | #endif |
| 121 | |
| 122 | /* |
| 123 | * NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for |
| 124 | * NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount |
| 125 | * of data in those buffers, and thus the minimum amount of data |
| 126 | * that you can request. NFS_DIRFRAGSIZ should be no smaller than |
| 127 | * DIRBLKSIZ. |
| 128 | */ |
| 129 | |
| 130 | #define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */ |
| 131 | #define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */ |
| 132 | |
| 133 | /* |
| 134 | * Maximum number of directory entries cached per NFS node, to avoid |
| 135 | * having this grow without bounds on very large directories. The |
| 136 | * minimum size to get reasonable performance for emulated binaries |
| 137 | * is the maximum number of entries that fits in NFS_DIRBLKSIZ. |
| 138 | * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36. |
| 139 | */ |
| 140 | #define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14) |
| 141 | |
| 142 | /* |
| 143 | * Oddballs |
| 144 | */ |
| 145 | #define NFS_CMPFH(n, f, s) \ |
| 146 | ((n)->n_fhsize == (s) && !memcmp((void *)(n)->n_fhp, (void *)(f), (s))) |
| 147 | #ifdef NFS_V2_ONLY |
| 148 | #define NFS_ISV3(v) (0) |
| 149 | #else |
| 150 | #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) |
| 151 | #endif |
| 152 | #define NFS_SRVMAXDATA(n) \ |
| 153 | (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ |
| 154 | NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) |
| 155 | |
| 156 | /* |
| 157 | * Use the vm_page flag reserved for pager use to indicate pages |
| 158 | * which have been written to the server but not yet committed. |
| 159 | */ |
| 160 | #define PG_NEEDCOMMIT PG_PAGER1 |
| 161 | |
| 162 | /* |
| 163 | * The IO_METASYNC flag should be implemented for local file systems. |
| 164 | * (Until then, it is nothin at all.) |
| 165 | */ |
| 166 | #ifndef IO_METASYNC |
| 167 | #define IO_METASYNC 0 |
| 168 | #endif |
| 169 | |
| 170 | /* |
| 171 | * Export arguments for local filesystem mount calls. |
| 172 | * Keep in mind that changing this structure modifies nfssvc(2)'s ABI (see |
| 173 | * 'struct mountd_exports_list' below). |
| 174 | * When modifying this structure, take care to also edit the |
| 175 | * nfs_update_exports_30 function in nfs_export.c accordingly to convert |
| 176 | * export_args to export_args30. |
| 177 | */ |
| 178 | struct export_args { |
| 179 | int ex_flags; /* export related flags */ |
| 180 | uid_t ex_root; /* mapping for root uid */ |
| 181 | struct uucred ex_anon; /* mapping for anonymous user */ |
| 182 | struct sockaddr *ex_addr; /* net address to which exported */ |
| 183 | int ex_addrlen; /* and the net address length */ |
| 184 | struct sockaddr *ex_mask; /* mask of valid bits in saddr */ |
| 185 | int ex_masklen; /* and the smask length */ |
| 186 | char *ex_indexfile; /* index file for WebNFS URLs */ |
| 187 | }; |
| 188 | |
| 189 | /* |
| 190 | * Structures for the nfssvc(2) syscall. Not that anyone but mountd, nfsd and |
| 191 | * mount_nfs should ever try and use it. |
| 192 | */ |
| 193 | struct nfsd_args { |
| 194 | int sock; /* Socket to serve */ |
| 195 | void * name; /* Client addr for connection based sockets */ |
| 196 | int namelen; /* Length of name */ |
| 197 | }; |
| 198 | |
| 199 | struct nfsd_srvargs { |
| 200 | struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ |
| 201 | uid_t nsd_uid; /* Effective uid mapped to cred */ |
| 202 | u_int32_t nsd_haddr; /* Ip address of client */ |
| 203 | struct uucred nsd_cr; /* Cred. uid maps to */ |
| 204 | int nsd_authlen; /* Length of auth string (ret) */ |
| 205 | u_char *nsd_authstr; /* Auth string (ret) */ |
| 206 | int nsd_verflen; /* and the verfier */ |
| 207 | u_char *nsd_verfstr; |
| 208 | struct timeval nsd_timestamp; /* timestamp from verifier */ |
| 209 | u_int32_t nsd_ttl; /* credential ttl (sec) */ |
| 210 | NFSKERBKEY_T nsd_key; /* Session key */ |
| 211 | }; |
| 212 | |
| 213 | struct nfsd_cargs { |
| 214 | char *ncd_dirp; /* Mount dir path */ |
| 215 | uid_t ncd_authuid; /* Effective uid */ |
| 216 | int ncd_authtype; /* Type of authenticator */ |
| 217 | u_int ncd_authlen; /* Length of authenticator string */ |
| 218 | u_char *ncd_authstr; /* Authenticator string */ |
| 219 | u_int ncd_verflen; /* and the verifier */ |
| 220 | u_char *ncd_verfstr; |
| 221 | NFSKERBKEY_T ncd_key; /* Session key */ |
| 222 | }; |
| 223 | |
| 224 | struct mountd_exports_list { |
| 225 | const char *mel_path; |
| 226 | size_t mel_nexports; |
| 227 | struct export_args *mel_exports; |
| 228 | }; |
| 229 | |
| 230 | /* |
| 231 | * try to keep nfsstats, which is exposed to userland via sysctl, |
| 232 | * compatible after NQNFS removal. |
| 233 | * 26 is the old value of NFS_NPROCS, which includes NQNFS procedures. |
| 234 | */ |
| 235 | #define NFSSTATS_NPROCS 26 |
| 236 | |
| 237 | /* |
| 238 | * Stats structure |
| 239 | */ |
| 240 | struct nfsstats { |
| 241 | uint32_t attrcache_hits; |
| 242 | uint32_t attrcache_misses; |
| 243 | uint32_t lookupcache_hits; |
| 244 | uint32_t lookupcache_misses; |
| 245 | uint32_t direofcache_hits; |
| 246 | uint32_t direofcache_misses; |
| 247 | uint32_t biocache_reads; |
| 248 | uint32_t read_bios; |
| 249 | uint32_t read_physios; |
| 250 | uint32_t biocache_writes; |
| 251 | uint32_t write_bios; |
| 252 | uint32_t write_physios; |
| 253 | uint32_t biocache_readlinks; |
| 254 | uint32_t readlink_bios; |
| 255 | uint32_t biocache_readdirs; |
| 256 | uint32_t readdir_bios; |
| 257 | uint32_t rpccnt[NFSSTATS_NPROCS]; |
| 258 | uint32_t rpcretries; |
| 259 | uint32_t srvrpccnt[NFSSTATS_NPROCS]; |
| 260 | uint32_t srvrpc_errs; |
| 261 | uint32_t srv_errs; |
| 262 | uint32_t rpcrequests; |
| 263 | uint32_t rpctimeouts; |
| 264 | uint32_t rpcunexpected; |
| 265 | uint32_t rpcinvalid; |
| 266 | uint32_t srvcache_inproghits; |
| 267 | uint32_t srvcache_idemdonehits; |
| 268 | uint32_t srvcache_nonidemdonehits; |
| 269 | uint32_t srvcache_misses; |
| 270 | uint32_t __srvnqnfs_leases; /* unused */ |
| 271 | uint32_t __srvnqnfs_maxleases; /* unused */ |
| 272 | uint32_t __srvnqnfs_getleases; /* unused */ |
| 273 | uint32_t srvvop_writes; |
| 274 | }; |
| 275 | |
| 276 | /* |
| 277 | * Flags for nfssvc() system call. |
| 278 | */ |
| 279 | #define NFSSVC_BIOD 0x002 |
| 280 | #define NFSSVC_NFSD 0x004 |
| 281 | #define NFSSVC_ADDSOCK 0x008 |
| 282 | #define NFSSVC_AUTHIN 0x010 |
| 283 | #define NFSSVC_GOTAUTH 0x040 |
| 284 | #define NFSSVC_AUTHINFAIL 0x080 |
| 285 | #define NFSSVC_MNTD 0x100 |
| 286 | #define NFSSVC_SETEXPORTSLIST 0x200 |
| 287 | |
| 288 | /* |
| 289 | * fs.nfs sysctl(3) identifiers |
| 290 | */ |
| 291 | #define NFS_NFSSTATS 1 /* struct: struct nfsstats */ |
| 292 | #define NFS_IOTHREADS 2 /* number of io threads */ |
| 293 | #define NFS_MAXID 3 |
| 294 | |
| 295 | #define NFS_NAMES { \ |
| 296 | { 0, 0 }, \ |
| 297 | { "nfsstats", CTLTYPE_STRUCT }, \ |
| 298 | { "iothreads", CTLTYPE_INT }, \ |
| 299 | } |
| 300 | |
| 301 | /* |
| 302 | * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts. |
| 303 | * What should be in this set is open to debate, but I believe that since |
| 304 | * I/O system calls on ufs are never interrupted by signals the set should |
| 305 | * be minimal. My reasoning is that many current programs that use signals |
| 306 | * such as SIGALRM will not expect file I/O system calls to be interrupted |
| 307 | * by them and break. |
| 308 | */ |
| 309 | #ifdef _KERNEL |
| 310 | |
| 311 | struct uio; struct buf; struct vattr; struct nameidata; /* XXX */ |
| 312 | |
| 313 | /* |
| 314 | * Socket errors ignored for connectionless sockets?? |
| 315 | * For now, ignore them all |
| 316 | */ |
| 317 | #define NFSIGNORE_SOERROR(s, e) \ |
| 318 | ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \ |
| 319 | ((s) & PR_CONNREQUIRED) == 0) |
| 320 | |
| 321 | /* |
| 322 | * Nfs outstanding request list element |
| 323 | */ |
| 324 | struct nfsreq { |
| 325 | TAILQ_ENTRY(nfsreq) r_chain; |
| 326 | struct mbuf *r_mreq; |
| 327 | struct mbuf *r_mrep; |
| 328 | struct mbuf *r_md; |
| 329 | void * r_dpos; |
| 330 | struct nfsmount *r_nmp; |
| 331 | u_int32_t r_xid; |
| 332 | int r_flags; /* flags on request, see below */ |
| 333 | int r_retry; /* max retransmission count */ |
| 334 | int r_rexmit; /* current retrans count */ |
| 335 | u_int32_t r_procnum; /* NFS procedure number */ |
| 336 | int r_rtt; /* RTT for rpc */ |
| 337 | struct lwp *r_lwp; /* LWP that did I/O system call */ |
| 338 | }; |
| 339 | |
| 340 | /* |
| 341 | * Queue head for nfsreq's |
| 342 | */ |
| 343 | extern TAILQ_HEAD(nfsreqhead, nfsreq) nfs_reqq; |
| 344 | |
| 345 | /* Flag values for r_flags */ |
| 346 | #define R_TIMING 0x01 /* timing request (in mntp) */ |
| 347 | #define R_SENT 0x02 /* request has been sent */ |
| 348 | #define R_SOFTTERM 0x04 /* soft mnt, too many retries */ |
| 349 | #define R_INTR 0x08 /* intr mnt, signal pending */ |
| 350 | #define R_SOCKERR 0x10 /* Fatal error on socket */ |
| 351 | #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ |
| 352 | #define R_MUSTRESEND 0x40 /* Must resend request */ |
| 353 | #define R_REXMITTED 0x100 /* retransmitted after reconnect */ |
| 354 | |
| 355 | /* |
| 356 | * A list of nfssvc_sock structures is maintained with all the sockets |
| 357 | * that require service by the nfsd. |
| 358 | * The nfsuid structs hang off of the nfssvc_sock structs in both lru |
| 359 | * and uid hash lists. |
| 360 | */ |
| 361 | #ifndef NFS_UIDHASHSIZ |
| 362 | #define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */ |
| 363 | #endif |
| 364 | #define NUIDHASH(sock, uid) \ |
| 365 | (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ]) |
| 366 | #ifndef NFS_WDELAYHASHSIZ |
| 367 | #define NFS_WDELAYHASHSIZ 16 /* and with this */ |
| 368 | #endif |
| 369 | #ifndef NFS_MUIDHASHSIZ |
| 370 | #define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */ |
| 371 | #endif |
| 372 | #define NMUIDHASH(nmp, uid) \ |
| 373 | (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ]) |
| 374 | |
| 375 | #ifndef NFS_DIRHASHSIZ |
| 376 | #define NFS_DIRHASHSIZ 64 |
| 377 | #endif |
| 378 | #define NFSDIRHASH(np, off) \ |
| 379 | (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)]) |
| 380 | |
| 381 | /* |
| 382 | * Macros for storing/retrieving cookies into directory buffers. |
| 383 | */ |
| 384 | #define NFS_STASHCOOKIE(dp,off) \ |
| 385 | *((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t))) = off |
| 386 | #define NFS_GETCOOKIE(dp) \ |
| 387 | (*((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t)))) |
| 388 | #define NFS_STASHCOOKIE32(dp, val) \ |
| 389 | *((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \ |
| 390 | sizeof (int))) = val |
| 391 | #define NFS_GETCOOKIE32(dp) \ |
| 392 | (*((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \ |
| 393 | sizeof (int)))) |
| 394 | |
| 395 | /* |
| 396 | * Flags passed to nfs_bioread(). |
| 397 | */ |
| 398 | #define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */ |
| 399 | |
| 400 | /* |
| 401 | * Network address hash list element |
| 402 | */ |
| 403 | union nethostaddr { |
| 404 | u_int32_t had_inetaddr; |
| 405 | struct mbuf *had_nam; |
| 406 | }; |
| 407 | |
| 408 | struct nfsuid { |
| 409 | TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */ |
| 410 | LIST_ENTRY(nfsuid) nu_hash; /* Hash list */ |
| 411 | int nu_flag; /* Flags */ |
| 412 | union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ |
| 413 | kauth_cred_t nu_cr; /* Cred uid mapped to */ |
| 414 | int nu_expire; /* Expiry time (sec) */ |
| 415 | struct timeval nu_timestamp; /* Kerb. timestamp */ |
| 416 | u_int32_t nu_nickname; /* Nickname on server */ |
| 417 | NFSKERBKEY_T nu_key; /* and session key */ |
| 418 | }; |
| 419 | |
| 420 | #define nu_inetaddr nu_haddr.had_inetaddr |
| 421 | #define nu_nam nu_haddr.had_nam |
| 422 | /* Bits for nu_flag */ |
| 423 | #define NU_INETADDR 0x1 |
| 424 | #define NU_NAM 0x2 |
| 425 | #define NU_NETFAM(u) \ |
| 426 | (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_INET6) |
| 427 | |
| 428 | /* |
| 429 | * b: protected by SLP_BUSY |
| 430 | * g: protected by nfsd_lock |
| 431 | * s: protected by ns_lock |
| 432 | * a: protected by ns_alock |
| 433 | */ |
| 434 | |
| 435 | struct nfssvc_sock { |
| 436 | kmutex_t ns_lock; |
| 437 | kmutex_t ns_alock; |
| 438 | kcondvar_t ns_cv; /* s: */ |
| 439 | TAILQ_ENTRY(nfssvc_sock) ns_chain; /* g: List of all nfssvc_sock */ |
| 440 | TAILQ_ENTRY(nfssvc_sock) ns_pending; /* g: List of pending sockets */ |
| 441 | TAILQ_HEAD(, nfsuid) ns_uidlruhead; |
| 442 | struct file *ns_fp; |
| 443 | struct socket *ns_so; |
| 444 | struct mbuf *ns_nam; |
| 445 | struct mbuf *ns_raw; /* b: */ |
| 446 | struct mbuf *ns_rawend; /* b: */ |
| 447 | struct mbuf *ns_rec; /* b: */ |
| 448 | struct mbuf *ns_recend; /* b: */ |
| 449 | struct mbuf *ns_frag; /* b: */ |
| 450 | int ns_flags; /* s: */ |
| 451 | int ns_aflags; /* a: */ |
| 452 | int ns_gflags; /* g: */ |
| 453 | int ns_sflags; /* b: */ |
| 454 | int ns_cc; /* b: */ |
| 455 | int ns_reclen; /* b: */ |
| 456 | int ns_numuids; |
| 457 | u_int32_t ns_sref; /* g: */ |
| 458 | SIMPLEQ_HEAD(, nfsrv_descript) ns_sendq; /* s: send reply list */ |
| 459 | LIST_HEAD(, nfsrv_descript) ns_tq; /* g: Write gather lists */ |
| 460 | LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ]; |
| 461 | LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; /* g: */ |
| 462 | }; |
| 463 | |
| 464 | /* Bits for "ns_flags" */ |
| 465 | #define SLP_VALID 0x01 |
| 466 | #define SLP_BUSY 0x10 |
| 467 | #define SLP_SENDING 0x80 |
| 468 | |
| 469 | /* Bits for "ns_aflags" */ |
| 470 | #define SLP_A_NEEDQ 0x01 |
| 471 | #define SLP_A_DISCONN 0x04 |
| 472 | |
| 473 | /* Bits for "ns_gflags" */ |
| 474 | #define SLP_G_DOREC 0x02 /* on nfssvc_sockpending queue */ |
| 475 | |
| 476 | /* Bits for "ns_sflags" */ |
| 477 | #define SLP_S_LASTFRAG 0x40 |
| 478 | |
| 479 | extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead; |
| 480 | extern struct nfssvc_sockhead nfssvc_sockpending; |
| 481 | extern int nfssvc_sockhead_flag; |
| 482 | #define SLP_INIT 0x01 |
| 483 | |
| 484 | /* |
| 485 | * One of these structures is allocated for each nfsd. |
| 486 | */ |
| 487 | struct nfsd { |
| 488 | TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */ |
| 489 | SLIST_ENTRY(nfsd) nfsd_idle; /* List of idle nfsd's */ |
| 490 | kcondvar_t nfsd_cv; |
| 491 | int nfsd_flag; /* NFSD_ flags */ |
| 492 | struct nfssvc_sock *nfsd_slp; /* Current socket */ |
| 493 | int nfsd_authlen; /* Authenticator len */ |
| 494 | u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ |
| 495 | int nfsd_verflen; /* and the Verifier */ |
| 496 | u_char nfsd_verfstr[RPCVERF_MAXSIZ]; |
| 497 | struct proc *nfsd_procp; /* Proc ptr */ |
| 498 | struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ |
| 499 | }; |
| 500 | |
| 501 | /* Bits for "nfsd_flag" */ |
| 502 | #define NFSD_NEEDAUTH 0x04 |
| 503 | #define NFSD_AUTHFAIL 0x08 |
| 504 | |
| 505 | #define NFSD_MAXFHSIZE 64 |
| 506 | typedef struct nfsrvfh { |
| 507 | size_t nsfh_size; |
| 508 | union { |
| 509 | fhandle_t u_fh; |
| 510 | uint8_t u_opaque[NFSD_MAXFHSIZE]; |
| 511 | } nsfh_u; |
| 512 | } nfsrvfh_t; |
| 513 | #define NFSRVFH_SIZE(nsfh) ((nsfh)->nsfh_size) |
| 514 | #define NFSRVFH_DATA(nsfh) ((nsfh)->nsfh_u.u_opaque) |
| 515 | #define NFSRVFH_FHANDLE(nsfh) (&(nsfh)->nsfh_u.u_fh) |
| 516 | |
| 517 | /* |
| 518 | * This structure is used by the server for describing each request. |
| 519 | * Some fields are used only when write request gathering is performed. |
| 520 | */ |
| 521 | struct nfsrv_descript { |
| 522 | u_quad_t nd_time; /* Write deadline (usec) */ |
| 523 | off_t nd_off; /* Start byte offset */ |
| 524 | off_t nd_eoff; /* and end byte offset */ |
| 525 | LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ |
| 526 | LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ |
| 527 | LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ |
| 528 | SIMPLEQ_ENTRY(nfsrv_descript) nd_sendq; /* send reply list */ |
| 529 | struct mbuf *nd_mrep; /* Request mbuf list */ |
| 530 | struct mbuf *nd_md; /* Current dissect mbuf */ |
| 531 | struct mbuf *nd_mreq; /* Reply mbuf list */ |
| 532 | struct mbuf *nd_nam; /* and socket addr */ |
| 533 | struct mbuf *nd_nam2; /* return socket addr */ |
| 534 | void * nd_dpos; /* Current dissect pos */ |
| 535 | u_int32_t nd_procnum; /* RPC # */ |
| 536 | int nd_stable; /* storage type */ |
| 537 | int nd_flag; /* nd_flag */ |
| 538 | int nd_len; /* Length of this write */ |
| 539 | int nd_repstat; /* Reply status */ |
| 540 | u_int32_t nd_retxid; /* Reply xid */ |
| 541 | u_int32_t nd_duration; /* Lease duration */ |
| 542 | struct timeval nd_starttime; /* Time RPC initiated */ |
| 543 | nfsrvfh_t nd_fh; /* File handle */ |
| 544 | kauth_cred_t nd_cr; /* Credentials */ |
| 545 | }; |
| 546 | |
| 547 | /* Bits for "nd_flag" */ |
| 548 | #define ND_READ 0x01 /* Check lease for readers */ |
| 549 | #define ND_WRITE 0x02 /* Check lease for modifiers */ |
| 550 | #define ND_CHECK 0x04 |
| 551 | #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) |
| 552 | #define ND_NFSV3 0x08 |
| 553 | #define ND_KERBNICK 0x20 |
| 554 | #define ND_KERBFULL 0x40 |
| 555 | #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) |
| 556 | |
| 557 | extern kmutex_t nfsd_lock; |
| 558 | extern kcondvar_t nfsd_initcv; |
| 559 | extern TAILQ_HEAD(nfsdhead, nfsd) nfsd_head; |
| 560 | extern SLIST_HEAD(nfsdidlehead, nfsd) nfsd_idle_head; |
| 561 | extern int nfsd_head_flag; |
| 562 | #define NFSD_CHECKSLP 0x01 |
| 563 | |
| 564 | extern struct mowner nfs_mowner; |
| 565 | extern struct nfsstats nfsstats; |
| 566 | extern int nfs_numasync; |
| 567 | |
| 568 | /* |
| 569 | * These macros compare nfsrv_descript structures. |
| 570 | */ |
| 571 | #define NFSW_CONTIG(o, n) \ |
| 572 | ((o)->nd_eoff >= (n)->nd_off && \ |
| 573 | !memcmp((void *)&(o)->nd_fh, (void *)&(n)->nd_fh, NFSX_V3FH)) |
| 574 | |
| 575 | /* |
| 576 | * Defines for WebNFS |
| 577 | */ |
| 578 | |
| 579 | #define WEBNFS_ESC_CHAR '%' |
| 580 | #define WEBNFS_SPECCHAR_START 0x80 |
| 581 | |
| 582 | #define WEBNFS_NATIVE_CHAR 0x80 |
| 583 | /* |
| 584 | * .. |
| 585 | * Possibly more here in the future. |
| 586 | */ |
| 587 | |
| 588 | /* |
| 589 | * Macro for converting escape characters in WebNFS pathnames. |
| 590 | * Should really be in libkern. |
| 591 | */ |
| 592 | |
| 593 | #define HEXTOC(c) \ |
| 594 | ((c) >= 'a' ? ((c) - ('a' - 10)) : \ |
| 595 | ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0'))) |
| 596 | #define HEXSTRTOI(p) \ |
| 597 | ((HEXTOC(p[0]) << 4) + HEXTOC(p[1])) |
| 598 | |
| 599 | /* |
| 600 | * Structure holding information for a publicly exported filesystem |
| 601 | * (WebNFS). Currently the specs allow just for one such filesystem. |
| 602 | */ |
| 603 | struct nfs_public { |
| 604 | int np_valid; /* Do we hold valid information */ |
| 605 | fhandle_t *np_handle; /* Filehandle for pub fs (internal) */ |
| 606 | struct mount *np_mount; /* Mountpoint of exported fs */ |
| 607 | char *np_index; /* Index file */ |
| 608 | }; |
| 609 | #endif /* _KERNEL */ |
| 610 | |
| 611 | #endif /* _NFS_NFS_H */ |
| 612 | |