1 /*- 2 * Copyright (c) 1989, 1993, 1995 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)nfs.h 8.4 (Berkeley) 5/1/95 33 * $FreeBSD$ 34 */ 35 36 #ifndef _NFSSERVER_NFS_H_ 37 #define _NFSSERVER_NFS_H_ 38 39 #ifdef _KERNEL 40 #include "opt_nfs.h" 41 #endif 42 43 #include <nfs/nfssvc.h> 44 45 /* 46 * Tunable constants for nfs 47 */ 48 49 #define NFS_TICKINTVL 10 /* Desired time for a tick (msec) */ 50 #define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */ 51 #define NFS_TIMEO (1 * NFS_HZ) /* Default timeout = 1 second */ 52 #define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */ 53 #define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */ 54 #define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/ 55 #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */ 56 #ifndef NFS_GATHERDELAY 57 #define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */ 58 #endif 59 #ifdef _KERNEL 60 #define DIRBLKSIZ 512 /* XXX we used to use ufs's DIRBLKSIZ */ 61 #endif 62 63 /* 64 * Oddballs 65 */ 66 #define NFS_SRVMAXDATA(n) \ 67 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ 68 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) 69 70 /* 71 * XXX 72 * The B_INVAFTERWRITE flag should be set to whatever is required by the 73 * buffer cache code to say "Invalidate the block after it is written back". 74 */ 75 #define B_INVAFTERWRITE B_NOCACHE 76 77 /* 78 * The IO_METASYNC flag should be implemented for local filesystems. 79 * (Until then, it is nothin at all.) 80 */ 81 #ifndef IO_METASYNC 82 #define IO_METASYNC 0 83 #endif 84 85 86 /* NFS state flags XXX -Wunused */ 87 #define NFSRV_SNDLOCK 0x01000000 /* Send socket lock */ 88 #define NFSRV_WANTSND 0x02000000 /* Want above */ 89 90 /* 91 * Structures for the nfssvc(2) syscall. Not that anyone but nfsd and mount_nfs 92 * should ever try and use it. 93 */ 94 95 /* 96 * Add a socket to monitor for NFS requests. 97 */ 98 struct nfsd_addsock_args { 99 int sock; /* Socket to serve */ 100 caddr_t name; /* Client addr for connection based sockets */ 101 int namelen; /* Length of name */ 102 }; 103 104 /* 105 * Start processing requests. 106 */ 107 struct nfsd_nfsd_args { 108 const char *principal; /* GSS-API service principal name */ 109 int minthreads; /* minimum service thread count */ 110 int maxthreads; /* maximum service thread count */ 111 }; 112 113 /* 114 * XXX to allow amd to include nfs.h without nfsproto.h 115 */ 116 #ifdef NFS_NPROCS 117 #include <nfsserver/nfsrvstats.h> 118 #endif 119 120 /* 121 * vfs.nfsrv sysctl(3) identifiers 122 */ 123 #define NFS_NFSRVSTATS 1 /* struct: struct nfsrvstats */ 124 #define NFS_NFSPRIVPORT 2 /* int: prohibit nfs to resvports */ 125 126 #ifdef _KERNEL 127 128 extern struct mtx nfsd_mtx; 129 #define NFSD_LOCK_ASSERT() mtx_assert(&nfsd_mtx, MA_OWNED) 130 #define NFSD_UNLOCK_ASSERT() mtx_assert(&nfsd_mtx, MA_NOTOWNED) 131 #define NFSD_LOCK_DONTCARE() 132 #define NFSD_LOCK() mtx_lock(&nfsd_mtx) 133 #define NFSD_UNLOCK() mtx_unlock(&nfsd_mtx) 134 135 #ifdef MALLOC_DECLARE 136 MALLOC_DECLARE(M_NFSRVDESC); 137 MALLOC_DECLARE(M_NFSD); 138 #endif 139 140 /* Forward declarations */ 141 struct nfssvc_sock; 142 struct nfsrv_descript; 143 struct uio; 144 struct vattr; 145 struct nameidata; 146 147 extern struct callout nfsrv_callout; 148 extern struct nfsrvstats nfsrvstats; 149 150 extern int nfsrv_ticks; 151 extern int nfsrvw_procrastinate; 152 extern int nfsrvw_procrastinate_v3; 153 extern int nfsrv_numnfsd; 154 155 /* Various values converted to XDR form. */ 156 extern u_int32_t nfsrv_nfs_false, nfsrv_nfs_true, nfsrv_nfs_xdrneg1, 157 nfsrv_nfs_prog; 158 extern u_int32_t nfsrv_rpc_reply, nfsrv_rpc_msgdenied, nfsrv_rpc_mismatch, 159 nfsrv_rpc_vers; 160 extern u_int32_t nfsrv_rpc_auth_unix, nfsrv_rpc_msgaccepted, nfsrv_rpc_call, 161 nfsrv_rpc_autherr; 162 163 /* Procedure table data */ 164 extern const int nfsrvv2_procid[NFS_NPROCS]; 165 extern const int nfsrv_nfsv3_procid[NFS_NPROCS]; 166 extern int32_t (*nfsrv3_procs[NFS_NPROCS])(struct nfsrv_descript *nd, 167 struct nfssvc_sock *slp, struct mbuf **mreqp); 168 169 /* 170 * A list of nfssvc_sock structures is maintained with all the sockets 171 * that require service by the nfsd. 172 */ 173 #ifndef NFS_WDELAYHASHSIZ 174 #define NFS_WDELAYHASHSIZ 16 /* and with this */ 175 #endif 176 #define NWDELAYHASH(sock, f) \ 177 (&(sock)->ns_wdelayhashtbl[(*((u_int32_t *)(f))) % NFS_WDELAYHASHSIZ]) 178 179 /* 180 * This structure is used by the server for describing each request. 181 */ 182 struct nfsrv_descript { 183 struct mbuf *nd_mrep; /* Request mbuf list */ 184 struct mbuf *nd_md; /* Current dissect mbuf */ 185 struct mbuf *nd_mreq; /* Reply mbuf list */ 186 struct sockaddr *nd_nam; /* and socket addr */ 187 struct sockaddr *nd_nam2; /* return socket addr */ 188 caddr_t nd_dpos; /* Current dissect pos */ 189 u_int32_t nd_procnum; /* RPC # */ 190 int nd_stable; /* storage type */ 191 int nd_flag; /* nd_flag */ 192 int nd_repstat; /* Reply status */ 193 fhandle_t nd_fh; /* File handle */ 194 struct ucred *nd_cr; /* Credentials */ 195 int nd_credflavor; /* Security flavor */ 196 }; 197 198 /* Bits for "nd_flag" */ 199 #define ND_NFSV3 0x08 200 201 /* 202 * Defines for WebNFS 203 */ 204 205 #define WEBNFS_ESC_CHAR '%' 206 #define WEBNFS_SPECCHAR_START 0x80 207 208 #define WEBNFS_NATIVE_CHAR 0x80 209 /* 210 * .. 211 * Possibly more here in the future. 212 */ 213 214 /* 215 * Macro for converting escape characters in WebNFS pathnames. 216 * Should really be in libkern. 217 */ 218 219 #define HEXTOC(c) \ 220 ((c) >= 'a' ? ((c) - ('a' - 10)) : \ 221 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0'))) 222 #define HEXSTRTOI(p) \ 223 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1])) 224 225 #ifdef NFS_DEBUG 226 227 extern int nfs_debug; 228 #define NFS_DEBUG_ASYNCIO 1 /* asynchronous i/o */ 229 #define NFS_DEBUG_WG 2 /* server write gathering */ 230 #define NFS_DEBUG_RC 4 /* server request caching */ 231 232 #define NFS_DPF(cat, args) \ 233 do { \ 234 if (nfs_debug & NFS_DEBUG_##cat) printf args; \ 235 } while (0) 236 237 #else 238 239 #define NFS_DPF(cat, args) 240 241 #endif 242 243 struct mbuf *nfs_rephead(int, struct nfsrv_descript *, int, struct mbuf **, 244 caddr_t *); 245 void nfsm_srvfattr(struct nfsrv_descript *, struct vattr *, 246 struct nfs_fattr *); 247 void nfsm_srvwcc(struct nfsrv_descript *, int, struct vattr *, int, 248 struct vattr *, struct mbuf **, char **); 249 void nfsm_srvpostopattr(struct nfsrv_descript *, int, struct vattr *, 250 struct mbuf **, char **); 251 int nfs_namei(struct nameidata *, struct nfsrv_descript *, fhandle_t *, 252 int, struct nfssvc_sock *, struct sockaddr *, struct mbuf **, 253 caddr_t *, struct vnode **, int, struct vattr *, int *, int); 254 void nfsm_adj(struct mbuf *, int, int); 255 int nfsm_mbuftouio(struct mbuf **, struct uio *, int, caddr_t *); 256 void nfsrv_init(int); 257 int nfsrv_errmap(struct nfsrv_descript *, int); 258 void nfsrvw_sort(gid_t *, int); 259 260 int nfsrv3_access(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 261 struct mbuf **mrq); 262 int nfsrv_commit(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 263 struct mbuf **mrq); 264 int nfsrv_create(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 265 struct mbuf **mrq); 266 int nfsrv_fhtovp(fhandle_t *, int, struct vnode **, int *, 267 struct nfsrv_descript *, struct nfssvc_sock *, struct sockaddr *, 268 int *, int); 269 int nfsrv_setpublicfs(struct mount *, struct netexport *, 270 struct export_args *); 271 int nfs_ispublicfh(fhandle_t *); 272 int nfsrv_fsinfo(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 273 struct mbuf **mrq); 274 int nfsrv_getattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 275 struct mbuf **mrq); 276 int nfsrv_link(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 277 struct mbuf **mrq); 278 int nfsrv_lookup(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 279 struct mbuf **mrq); 280 int nfsrv_mkdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 281 struct mbuf **mrq); 282 int nfsrv_mknod(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 283 struct mbuf **mrq); 284 int nfsrv_noop(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 285 struct mbuf **mrq); 286 int nfsrv_null(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 287 struct mbuf **mrq); 288 int nfsrv_pathconf(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 289 struct mbuf **mrq); 290 int nfsrv_read(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 291 struct mbuf **mrq); 292 int nfsrv_readdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 293 struct mbuf **mrq); 294 int nfsrv_readdirplus(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 295 struct mbuf **mrq); 296 int nfsrv_readlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 297 struct mbuf **mrq); 298 int nfsrv_remove(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 299 struct mbuf **mrq); 300 int nfsrv_rename(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 301 struct mbuf **mrq); 302 int nfsrv_rmdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 303 struct mbuf **mrq); 304 int nfsrv_setattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 305 struct mbuf **mrq); 306 int nfsrv_statfs(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 307 struct mbuf **mrq); 308 int nfsrv_symlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 309 struct mbuf **mrq); 310 int nfsrv_write(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp, 311 struct mbuf **mrq); 312 /* 313 * #ifdef _SYS_SYSPROTO_H_ so that it is only defined when sysproto.h 314 * has been included, so that "struct nfssvc_args" is defined. 315 */ 316 #ifdef _SYS_SYSPROTO_H_ 317 int nfssvc_nfsserver(struct thread *, struct nfssvc_args *); 318 #endif 319 #endif /* _KERNEL */ 320 321 #endif 322