nfs_subs.c revision 1.191
1 1.191 yamt /* $NetBSD: nfs_subs.c,v 1.191 2007/07/27 10:03:58 yamt Exp $ */ 2 1.14 cgd 3 1.1 cgd /* 4 1.12 mycroft * Copyright (c) 1989, 1993 5 1.12 mycroft * The Regents of the University of California. All rights reserved. 6 1.1 cgd * 7 1.1 cgd * This code is derived from software contributed to Berkeley by 8 1.1 cgd * Rick Macklem at The University of Guelph. 9 1.1 cgd * 10 1.1 cgd * Redistribution and use in source and binary forms, with or without 11 1.1 cgd * modification, are permitted provided that the following conditions 12 1.1 cgd * are met: 13 1.1 cgd * 1. Redistributions of source code must retain the above copyright 14 1.1 cgd * notice, this list of conditions and the following disclaimer. 15 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 16 1.1 cgd * notice, this list of conditions and the following disclaimer in the 17 1.1 cgd * documentation and/or other materials provided with the distribution. 18 1.127 agc * 3. Neither the name of the University nor the names of its contributors 19 1.1 cgd * may be used to endorse or promote products derived from this software 20 1.1 cgd * without specific prior written permission. 21 1.1 cgd * 22 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 1.1 cgd * SUCH DAMAGE. 33 1.1 cgd * 34 1.25 fvdl * @(#)nfs_subs.c 8.8 (Berkeley) 5/22/95 35 1.1 cgd */ 36 1.1 cgd 37 1.83 fvdl /* 38 1.83 fvdl * Copyright 2000 Wasabi Systems, Inc. 39 1.83 fvdl * All rights reserved. 40 1.83 fvdl * 41 1.83 fvdl * Written by Frank van der Linden for Wasabi Systems, Inc. 42 1.83 fvdl * 43 1.83 fvdl * Redistribution and use in source and binary forms, with or without 44 1.83 fvdl * modification, are permitted provided that the following conditions 45 1.83 fvdl * are met: 46 1.83 fvdl * 1. Redistributions of source code must retain the above copyright 47 1.83 fvdl * notice, this list of conditions and the following disclaimer. 48 1.83 fvdl * 2. Redistributions in binary form must reproduce the above copyright 49 1.83 fvdl * notice, this list of conditions and the following disclaimer in the 50 1.83 fvdl * documentation and/or other materials provided with the distribution. 51 1.83 fvdl * 3. All advertising materials mentioning features or use of this software 52 1.83 fvdl * must display the following acknowledgement: 53 1.83 fvdl * This product includes software developed for the NetBSD Project by 54 1.83 fvdl * Wasabi Systems, Inc. 55 1.83 fvdl * 4. The name of Wasabi Systems, Inc. may not be used to endorse 56 1.83 fvdl * or promote products derived from this software without specific prior 57 1.83 fvdl * written permission. 58 1.83 fvdl * 59 1.83 fvdl * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 60 1.83 fvdl * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 61 1.83 fvdl * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 62 1.83 fvdl * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 63 1.83 fvdl * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 64 1.83 fvdl * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 65 1.83 fvdl * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 66 1.83 fvdl * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 67 1.83 fvdl * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 68 1.83 fvdl * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 69 1.83 fvdl * POSSIBILITY OF SUCH DAMAGE. 70 1.83 fvdl */ 71 1.99 lukem 72 1.99 lukem #include <sys/cdefs.h> 73 1.191 yamt __KERNEL_RCSID(0, "$NetBSD: nfs_subs.c,v 1.191 2007/07/27 10:03:58 yamt Exp $"); 74 1.83 fvdl 75 1.55 thorpej #include "fs_nfs.h" 76 1.82 bjh21 #include "opt_nfs.h" 77 1.61 thorpej #include "opt_nfsserver.h" 78 1.62 jonathan #include "opt_iso.h" 79 1.76 fvdl #include "opt_inet.h" 80 1.25 fvdl 81 1.1 cgd /* 82 1.1 cgd * These functions support the macros and help fiddle mbuf chains for 83 1.1 cgd * the nfs op functions. They do things like create the rpc header and 84 1.1 cgd * copy data between mbuf chains and uio lists. 85 1.1 cgd */ 86 1.9 mycroft #include <sys/param.h> 87 1.9 mycroft #include <sys/proc.h> 88 1.9 mycroft #include <sys/systm.h> 89 1.9 mycroft #include <sys/kernel.h> 90 1.9 mycroft #include <sys/mount.h> 91 1.9 mycroft #include <sys/vnode.h> 92 1.9 mycroft #include <sys/namei.h> 93 1.9 mycroft #include <sys/mbuf.h> 94 1.12 mycroft #include <sys/socket.h> 95 1.12 mycroft #include <sys/stat.h> 96 1.25 fvdl #include <sys/malloc.h> 97 1.98 fvdl #include <sys/filedesc.h> 98 1.30 fvdl #include <sys/time.h> 99 1.43 fvdl #include <sys/dirent.h> 100 1.155 thorpej #include <sys/once.h> 101 1.162 elad #include <sys/kauth.h> 102 1.1 cgd 103 1.51 mrg #include <uvm/uvm_extern.h> 104 1.51 mrg 105 1.9 mycroft #include <nfs/rpcv2.h> 106 1.25 fvdl #include <nfs/nfsproto.h> 107 1.9 mycroft #include <nfs/nfsnode.h> 108 1.9 mycroft #include <nfs/nfs.h> 109 1.9 mycroft #include <nfs/xdr_subs.h> 110 1.9 mycroft #include <nfs/nfsm_subs.h> 111 1.12 mycroft #include <nfs/nfsmount.h> 112 1.12 mycroft #include <nfs/nfsrtt.h> 113 1.24 christos #include <nfs/nfs_var.h> 114 1.12 mycroft 115 1.12 mycroft #include <miscfs/specfs/specdev.h> 116 1.24 christos 117 1.12 mycroft #include <netinet/in.h> 118 1.12 mycroft #ifdef ISO 119 1.12 mycroft #include <netiso/iso.h> 120 1.12 mycroft #endif 121 1.1 cgd 122 1.1 cgd /* 123 1.1 cgd * Data items converted to xdr at startup, since they are constant 124 1.1 cgd * This is kinda hokey, but may save a little time doing byte swaps 125 1.1 cgd */ 126 1.22 cgd u_int32_t nfs_xdrneg1; 127 1.22 cgd u_int32_t rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 128 1.25 fvdl rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 129 1.12 mycroft rpc_auth_kerb; 130 1.179 yamt u_int32_t nfs_prog, nfs_true, nfs_false; 131 1.12 mycroft 132 1.1 cgd /* And other global data */ 133 1.90 jdolecek const nfstype nfsv2_type[9] = 134 1.90 jdolecek { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON, NFCHR, NFNON }; 135 1.90 jdolecek const nfstype nfsv3_type[9] = 136 1.90 jdolecek { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK, NFFIFO, NFNON }; 137 1.90 jdolecek const enum vtype nv2tov_type[8] = 138 1.90 jdolecek { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON }; 139 1.90 jdolecek const enum vtype nv3tov_type[8] = 140 1.90 jdolecek { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO }; 141 1.25 fvdl int nfs_ticks; 142 1.100 chs int nfs_commitsize; 143 1.108 christos 144 1.108 christos MALLOC_DEFINE(M_NFSDIROFF, "NFS diroff", "NFS directory cookies"); 145 1.25 fvdl 146 1.35 thorpej /* NFS client/server stats. */ 147 1.35 thorpej struct nfsstats nfsstats; 148 1.35 thorpej 149 1.25 fvdl /* 150 1.25 fvdl * Mapping of old NFS Version 2 RPC numbers to generic numbers. 151 1.25 fvdl */ 152 1.90 jdolecek const int nfsv3_procid[NFS_NPROCS] = { 153 1.25 fvdl NFSPROC_NULL, 154 1.25 fvdl NFSPROC_GETATTR, 155 1.25 fvdl NFSPROC_SETATTR, 156 1.25 fvdl NFSPROC_NOOP, 157 1.25 fvdl NFSPROC_LOOKUP, 158 1.25 fvdl NFSPROC_READLINK, 159 1.25 fvdl NFSPROC_READ, 160 1.25 fvdl NFSPROC_NOOP, 161 1.25 fvdl NFSPROC_WRITE, 162 1.25 fvdl NFSPROC_CREATE, 163 1.25 fvdl NFSPROC_REMOVE, 164 1.25 fvdl NFSPROC_RENAME, 165 1.25 fvdl NFSPROC_LINK, 166 1.25 fvdl NFSPROC_SYMLINK, 167 1.25 fvdl NFSPROC_MKDIR, 168 1.25 fvdl NFSPROC_RMDIR, 169 1.25 fvdl NFSPROC_READDIR, 170 1.25 fvdl NFSPROC_FSSTAT, 171 1.25 fvdl NFSPROC_NOOP, 172 1.25 fvdl NFSPROC_NOOP, 173 1.25 fvdl NFSPROC_NOOP, 174 1.25 fvdl NFSPROC_NOOP, 175 1.25 fvdl NFSPROC_NOOP 176 1.25 fvdl }; 177 1.25 fvdl 178 1.25 fvdl /* 179 1.25 fvdl * and the reverse mapping from generic to Version 2 procedure numbers 180 1.25 fvdl */ 181 1.90 jdolecek const int nfsv2_procid[NFS_NPROCS] = { 182 1.25 fvdl NFSV2PROC_NULL, 183 1.25 fvdl NFSV2PROC_GETATTR, 184 1.25 fvdl NFSV2PROC_SETATTR, 185 1.25 fvdl NFSV2PROC_LOOKUP, 186 1.25 fvdl NFSV2PROC_NOOP, 187 1.25 fvdl NFSV2PROC_READLINK, 188 1.25 fvdl NFSV2PROC_READ, 189 1.25 fvdl NFSV2PROC_WRITE, 190 1.25 fvdl NFSV2PROC_CREATE, 191 1.25 fvdl NFSV2PROC_MKDIR, 192 1.25 fvdl NFSV2PROC_SYMLINK, 193 1.25 fvdl NFSV2PROC_CREATE, 194 1.25 fvdl NFSV2PROC_REMOVE, 195 1.25 fvdl NFSV2PROC_RMDIR, 196 1.25 fvdl NFSV2PROC_RENAME, 197 1.25 fvdl NFSV2PROC_LINK, 198 1.25 fvdl NFSV2PROC_READDIR, 199 1.25 fvdl NFSV2PROC_NOOP, 200 1.25 fvdl NFSV2PROC_STATFS, 201 1.25 fvdl NFSV2PROC_NOOP, 202 1.25 fvdl NFSV2PROC_NOOP, 203 1.25 fvdl NFSV2PROC_NOOP, 204 1.25 fvdl NFSV2PROC_NOOP, 205 1.25 fvdl }; 206 1.25 fvdl 207 1.25 fvdl /* 208 1.25 fvdl * Maps errno values to nfs error numbers. 209 1.25 fvdl * Use NFSERR_IO as the catch all for ones not specifically defined in 210 1.25 fvdl * RFC 1094. 211 1.25 fvdl */ 212 1.90 jdolecek static const u_char nfsrv_v2errmap[ELAST] = { 213 1.25 fvdl NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 214 1.25 fvdl NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 215 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 216 1.25 fvdl NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 217 1.25 fvdl NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 218 1.25 fvdl NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 219 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 220 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 221 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 222 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 223 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 224 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 225 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 226 1.25 fvdl NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 227 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 228 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 229 1.52 mikel NFSERR_IO, NFSERR_IO, 230 1.25 fvdl }; 231 1.25 fvdl 232 1.25 fvdl /* 233 1.25 fvdl * Maps errno values to nfs error numbers. 234 1.25 fvdl * Although it is not obvious whether or not NFS clients really care if 235 1.25 fvdl * a returned error value is in the specified list for the procedure, the 236 1.25 fvdl * safest thing to do is filter them appropriately. For Version 2, the 237 1.25 fvdl * X/Open XNFS document is the only specification that defines error values 238 1.25 fvdl * for each RPC (The RFC simply lists all possible error values for all RPCs), 239 1.25 fvdl * so I have decided to not do this for Version 2. 240 1.25 fvdl * The first entry is the default error return and the rest are the valid 241 1.25 fvdl * errors for that RPC in increasing numeric order. 242 1.25 fvdl */ 243 1.90 jdolecek static const short nfsv3err_null[] = { 244 1.25 fvdl 0, 245 1.25 fvdl 0, 246 1.25 fvdl }; 247 1.25 fvdl 248 1.90 jdolecek static const short nfsv3err_getattr[] = { 249 1.25 fvdl NFSERR_IO, 250 1.25 fvdl NFSERR_IO, 251 1.25 fvdl NFSERR_STALE, 252 1.25 fvdl NFSERR_BADHANDLE, 253 1.25 fvdl NFSERR_SERVERFAULT, 254 1.25 fvdl 0, 255 1.25 fvdl }; 256 1.25 fvdl 257 1.90 jdolecek static const short nfsv3err_setattr[] = { 258 1.25 fvdl NFSERR_IO, 259 1.25 fvdl NFSERR_PERM, 260 1.25 fvdl NFSERR_IO, 261 1.25 fvdl NFSERR_ACCES, 262 1.25 fvdl NFSERR_INVAL, 263 1.25 fvdl NFSERR_NOSPC, 264 1.25 fvdl NFSERR_ROFS, 265 1.25 fvdl NFSERR_DQUOT, 266 1.25 fvdl NFSERR_STALE, 267 1.25 fvdl NFSERR_BADHANDLE, 268 1.25 fvdl NFSERR_NOT_SYNC, 269 1.25 fvdl NFSERR_SERVERFAULT, 270 1.25 fvdl 0, 271 1.25 fvdl }; 272 1.25 fvdl 273 1.90 jdolecek static const short nfsv3err_lookup[] = { 274 1.25 fvdl NFSERR_IO, 275 1.25 fvdl NFSERR_NOENT, 276 1.25 fvdl NFSERR_IO, 277 1.25 fvdl NFSERR_ACCES, 278 1.25 fvdl NFSERR_NOTDIR, 279 1.25 fvdl NFSERR_NAMETOL, 280 1.25 fvdl NFSERR_STALE, 281 1.25 fvdl NFSERR_BADHANDLE, 282 1.25 fvdl NFSERR_SERVERFAULT, 283 1.25 fvdl 0, 284 1.25 fvdl }; 285 1.25 fvdl 286 1.90 jdolecek static const short nfsv3err_access[] = { 287 1.25 fvdl NFSERR_IO, 288 1.25 fvdl NFSERR_IO, 289 1.25 fvdl NFSERR_STALE, 290 1.25 fvdl NFSERR_BADHANDLE, 291 1.25 fvdl NFSERR_SERVERFAULT, 292 1.25 fvdl 0, 293 1.25 fvdl }; 294 1.25 fvdl 295 1.90 jdolecek static const short nfsv3err_readlink[] = { 296 1.25 fvdl NFSERR_IO, 297 1.25 fvdl NFSERR_IO, 298 1.25 fvdl NFSERR_ACCES, 299 1.25 fvdl NFSERR_INVAL, 300 1.25 fvdl NFSERR_STALE, 301 1.25 fvdl NFSERR_BADHANDLE, 302 1.25 fvdl NFSERR_NOTSUPP, 303 1.25 fvdl NFSERR_SERVERFAULT, 304 1.25 fvdl 0, 305 1.25 fvdl }; 306 1.25 fvdl 307 1.90 jdolecek static const short nfsv3err_read[] = { 308 1.25 fvdl NFSERR_IO, 309 1.25 fvdl NFSERR_IO, 310 1.25 fvdl NFSERR_NXIO, 311 1.25 fvdl NFSERR_ACCES, 312 1.25 fvdl NFSERR_INVAL, 313 1.25 fvdl NFSERR_STALE, 314 1.25 fvdl NFSERR_BADHANDLE, 315 1.25 fvdl NFSERR_SERVERFAULT, 316 1.67 fvdl NFSERR_JUKEBOX, 317 1.25 fvdl 0, 318 1.25 fvdl }; 319 1.25 fvdl 320 1.90 jdolecek static const short nfsv3err_write[] = { 321 1.25 fvdl NFSERR_IO, 322 1.25 fvdl NFSERR_IO, 323 1.25 fvdl NFSERR_ACCES, 324 1.25 fvdl NFSERR_INVAL, 325 1.25 fvdl NFSERR_FBIG, 326 1.25 fvdl NFSERR_NOSPC, 327 1.25 fvdl NFSERR_ROFS, 328 1.25 fvdl NFSERR_DQUOT, 329 1.25 fvdl NFSERR_STALE, 330 1.25 fvdl NFSERR_BADHANDLE, 331 1.25 fvdl NFSERR_SERVERFAULT, 332 1.68 fvdl NFSERR_JUKEBOX, 333 1.25 fvdl 0, 334 1.25 fvdl }; 335 1.25 fvdl 336 1.90 jdolecek static const short nfsv3err_create[] = { 337 1.25 fvdl NFSERR_IO, 338 1.25 fvdl NFSERR_IO, 339 1.25 fvdl NFSERR_ACCES, 340 1.25 fvdl NFSERR_EXIST, 341 1.25 fvdl NFSERR_NOTDIR, 342 1.25 fvdl NFSERR_NOSPC, 343 1.25 fvdl NFSERR_ROFS, 344 1.25 fvdl NFSERR_NAMETOL, 345 1.25 fvdl NFSERR_DQUOT, 346 1.25 fvdl NFSERR_STALE, 347 1.25 fvdl NFSERR_BADHANDLE, 348 1.25 fvdl NFSERR_NOTSUPP, 349 1.25 fvdl NFSERR_SERVERFAULT, 350 1.25 fvdl 0, 351 1.25 fvdl }; 352 1.25 fvdl 353 1.90 jdolecek static const short nfsv3err_mkdir[] = { 354 1.25 fvdl NFSERR_IO, 355 1.25 fvdl NFSERR_IO, 356 1.25 fvdl NFSERR_ACCES, 357 1.25 fvdl NFSERR_EXIST, 358 1.25 fvdl NFSERR_NOTDIR, 359 1.25 fvdl NFSERR_NOSPC, 360 1.25 fvdl NFSERR_ROFS, 361 1.25 fvdl NFSERR_NAMETOL, 362 1.25 fvdl NFSERR_DQUOT, 363 1.25 fvdl NFSERR_STALE, 364 1.25 fvdl NFSERR_BADHANDLE, 365 1.25 fvdl NFSERR_NOTSUPP, 366 1.25 fvdl NFSERR_SERVERFAULT, 367 1.25 fvdl 0, 368 1.25 fvdl }; 369 1.25 fvdl 370 1.90 jdolecek static const short nfsv3err_symlink[] = { 371 1.25 fvdl NFSERR_IO, 372 1.25 fvdl NFSERR_IO, 373 1.25 fvdl NFSERR_ACCES, 374 1.25 fvdl NFSERR_EXIST, 375 1.25 fvdl NFSERR_NOTDIR, 376 1.25 fvdl NFSERR_NOSPC, 377 1.25 fvdl NFSERR_ROFS, 378 1.25 fvdl NFSERR_NAMETOL, 379 1.25 fvdl NFSERR_DQUOT, 380 1.25 fvdl NFSERR_STALE, 381 1.25 fvdl NFSERR_BADHANDLE, 382 1.25 fvdl NFSERR_NOTSUPP, 383 1.25 fvdl NFSERR_SERVERFAULT, 384 1.25 fvdl 0, 385 1.25 fvdl }; 386 1.25 fvdl 387 1.90 jdolecek static const short nfsv3err_mknod[] = { 388 1.25 fvdl NFSERR_IO, 389 1.25 fvdl NFSERR_IO, 390 1.25 fvdl NFSERR_ACCES, 391 1.25 fvdl NFSERR_EXIST, 392 1.25 fvdl NFSERR_NOTDIR, 393 1.25 fvdl NFSERR_NOSPC, 394 1.25 fvdl NFSERR_ROFS, 395 1.25 fvdl NFSERR_NAMETOL, 396 1.25 fvdl NFSERR_DQUOT, 397 1.25 fvdl NFSERR_STALE, 398 1.25 fvdl NFSERR_BADHANDLE, 399 1.25 fvdl NFSERR_NOTSUPP, 400 1.25 fvdl NFSERR_SERVERFAULT, 401 1.25 fvdl NFSERR_BADTYPE, 402 1.25 fvdl 0, 403 1.25 fvdl }; 404 1.25 fvdl 405 1.90 jdolecek static const short nfsv3err_remove[] = { 406 1.25 fvdl NFSERR_IO, 407 1.25 fvdl NFSERR_NOENT, 408 1.25 fvdl NFSERR_IO, 409 1.25 fvdl NFSERR_ACCES, 410 1.25 fvdl NFSERR_NOTDIR, 411 1.25 fvdl NFSERR_ROFS, 412 1.25 fvdl NFSERR_NAMETOL, 413 1.25 fvdl NFSERR_STALE, 414 1.25 fvdl NFSERR_BADHANDLE, 415 1.25 fvdl NFSERR_SERVERFAULT, 416 1.25 fvdl 0, 417 1.25 fvdl }; 418 1.25 fvdl 419 1.90 jdolecek static const short nfsv3err_rmdir[] = { 420 1.25 fvdl NFSERR_IO, 421 1.25 fvdl NFSERR_NOENT, 422 1.25 fvdl NFSERR_IO, 423 1.25 fvdl NFSERR_ACCES, 424 1.25 fvdl NFSERR_EXIST, 425 1.25 fvdl NFSERR_NOTDIR, 426 1.25 fvdl NFSERR_INVAL, 427 1.25 fvdl NFSERR_ROFS, 428 1.25 fvdl NFSERR_NAMETOL, 429 1.25 fvdl NFSERR_NOTEMPTY, 430 1.25 fvdl NFSERR_STALE, 431 1.25 fvdl NFSERR_BADHANDLE, 432 1.25 fvdl NFSERR_NOTSUPP, 433 1.25 fvdl NFSERR_SERVERFAULT, 434 1.25 fvdl 0, 435 1.25 fvdl }; 436 1.25 fvdl 437 1.90 jdolecek static const short nfsv3err_rename[] = { 438 1.25 fvdl NFSERR_IO, 439 1.25 fvdl NFSERR_NOENT, 440 1.25 fvdl NFSERR_IO, 441 1.25 fvdl NFSERR_ACCES, 442 1.25 fvdl NFSERR_EXIST, 443 1.25 fvdl NFSERR_XDEV, 444 1.25 fvdl NFSERR_NOTDIR, 445 1.25 fvdl NFSERR_ISDIR, 446 1.25 fvdl NFSERR_INVAL, 447 1.25 fvdl NFSERR_NOSPC, 448 1.25 fvdl NFSERR_ROFS, 449 1.25 fvdl NFSERR_MLINK, 450 1.25 fvdl NFSERR_NAMETOL, 451 1.25 fvdl NFSERR_NOTEMPTY, 452 1.25 fvdl NFSERR_DQUOT, 453 1.25 fvdl NFSERR_STALE, 454 1.25 fvdl NFSERR_BADHANDLE, 455 1.25 fvdl NFSERR_NOTSUPP, 456 1.25 fvdl NFSERR_SERVERFAULT, 457 1.25 fvdl 0, 458 1.25 fvdl }; 459 1.25 fvdl 460 1.90 jdolecek static const short nfsv3err_link[] = { 461 1.25 fvdl NFSERR_IO, 462 1.25 fvdl NFSERR_IO, 463 1.25 fvdl NFSERR_ACCES, 464 1.25 fvdl NFSERR_EXIST, 465 1.25 fvdl NFSERR_XDEV, 466 1.25 fvdl NFSERR_NOTDIR, 467 1.25 fvdl NFSERR_INVAL, 468 1.25 fvdl NFSERR_NOSPC, 469 1.25 fvdl NFSERR_ROFS, 470 1.25 fvdl NFSERR_MLINK, 471 1.25 fvdl NFSERR_NAMETOL, 472 1.25 fvdl NFSERR_DQUOT, 473 1.25 fvdl NFSERR_STALE, 474 1.25 fvdl NFSERR_BADHANDLE, 475 1.25 fvdl NFSERR_NOTSUPP, 476 1.25 fvdl NFSERR_SERVERFAULT, 477 1.25 fvdl 0, 478 1.25 fvdl }; 479 1.25 fvdl 480 1.90 jdolecek static const short nfsv3err_readdir[] = { 481 1.25 fvdl NFSERR_IO, 482 1.25 fvdl NFSERR_IO, 483 1.25 fvdl NFSERR_ACCES, 484 1.25 fvdl NFSERR_NOTDIR, 485 1.25 fvdl NFSERR_STALE, 486 1.25 fvdl NFSERR_BADHANDLE, 487 1.25 fvdl NFSERR_BAD_COOKIE, 488 1.25 fvdl NFSERR_TOOSMALL, 489 1.25 fvdl NFSERR_SERVERFAULT, 490 1.25 fvdl 0, 491 1.25 fvdl }; 492 1.25 fvdl 493 1.90 jdolecek static const short nfsv3err_readdirplus[] = { 494 1.25 fvdl NFSERR_IO, 495 1.25 fvdl NFSERR_IO, 496 1.25 fvdl NFSERR_ACCES, 497 1.25 fvdl NFSERR_NOTDIR, 498 1.25 fvdl NFSERR_STALE, 499 1.25 fvdl NFSERR_BADHANDLE, 500 1.25 fvdl NFSERR_BAD_COOKIE, 501 1.25 fvdl NFSERR_NOTSUPP, 502 1.25 fvdl NFSERR_TOOSMALL, 503 1.25 fvdl NFSERR_SERVERFAULT, 504 1.25 fvdl 0, 505 1.25 fvdl }; 506 1.25 fvdl 507 1.90 jdolecek static const short nfsv3err_fsstat[] = { 508 1.25 fvdl NFSERR_IO, 509 1.25 fvdl NFSERR_IO, 510 1.25 fvdl NFSERR_STALE, 511 1.25 fvdl NFSERR_BADHANDLE, 512 1.25 fvdl NFSERR_SERVERFAULT, 513 1.25 fvdl 0, 514 1.25 fvdl }; 515 1.25 fvdl 516 1.90 jdolecek static const short nfsv3err_fsinfo[] = { 517 1.25 fvdl NFSERR_STALE, 518 1.25 fvdl NFSERR_STALE, 519 1.25 fvdl NFSERR_BADHANDLE, 520 1.25 fvdl NFSERR_SERVERFAULT, 521 1.25 fvdl 0, 522 1.25 fvdl }; 523 1.25 fvdl 524 1.90 jdolecek static const short nfsv3err_pathconf[] = { 525 1.25 fvdl NFSERR_STALE, 526 1.25 fvdl NFSERR_STALE, 527 1.25 fvdl NFSERR_BADHANDLE, 528 1.25 fvdl NFSERR_SERVERFAULT, 529 1.25 fvdl 0, 530 1.25 fvdl }; 531 1.25 fvdl 532 1.90 jdolecek static const short nfsv3err_commit[] = { 533 1.25 fvdl NFSERR_IO, 534 1.25 fvdl NFSERR_IO, 535 1.25 fvdl NFSERR_STALE, 536 1.25 fvdl NFSERR_BADHANDLE, 537 1.25 fvdl NFSERR_SERVERFAULT, 538 1.25 fvdl 0, 539 1.25 fvdl }; 540 1.25 fvdl 541 1.90 jdolecek static const short * const nfsrv_v3errmap[] = { 542 1.25 fvdl nfsv3err_null, 543 1.25 fvdl nfsv3err_getattr, 544 1.25 fvdl nfsv3err_setattr, 545 1.25 fvdl nfsv3err_lookup, 546 1.25 fvdl nfsv3err_access, 547 1.25 fvdl nfsv3err_readlink, 548 1.25 fvdl nfsv3err_read, 549 1.25 fvdl nfsv3err_write, 550 1.25 fvdl nfsv3err_create, 551 1.25 fvdl nfsv3err_mkdir, 552 1.25 fvdl nfsv3err_symlink, 553 1.25 fvdl nfsv3err_mknod, 554 1.25 fvdl nfsv3err_remove, 555 1.25 fvdl nfsv3err_rmdir, 556 1.25 fvdl nfsv3err_rename, 557 1.25 fvdl nfsv3err_link, 558 1.25 fvdl nfsv3err_readdir, 559 1.25 fvdl nfsv3err_readdirplus, 560 1.25 fvdl nfsv3err_fsstat, 561 1.25 fvdl nfsv3err_fsinfo, 562 1.25 fvdl nfsv3err_pathconf, 563 1.25 fvdl nfsv3err_commit, 564 1.25 fvdl }; 565 1.25 fvdl 566 1.12 mycroft extern struct nfsrtt nfsrtt; 567 1.25 fvdl extern struct nfsnodehashhead *nfsnodehashtbl; 568 1.25 fvdl extern u_long nfsnodehash; 569 1.1 cgd 570 1.46 fvdl u_long nfsdirhashmask; 571 1.18 mycroft 572 1.43 fvdl int nfs_webnamei __P((struct nameidata *, struct vnode *, struct proc *)); 573 1.43 fvdl 574 1.1 cgd /* 575 1.1 cgd * Create the header for an rpc request packet 576 1.1 cgd * The hsiz is the size of the rest of the nfs request header. 577 1.1 cgd * (just used to decide if a cluster is a good idea) 578 1.1 cgd */ 579 1.12 mycroft struct mbuf * 580 1.183 christos nfsm_reqh(struct nfsnode *np, u_long procid, int hsiz, char **bposp) 581 1.12 mycroft { 582 1.75 augustss struct mbuf *mb; 583 1.183 christos char *bpos; 584 1.12 mycroft 585 1.109 matt mb = m_get(M_WAIT, MT_DATA); 586 1.109 matt MCLAIM(mb, &nfs_mowner); 587 1.12 mycroft if (hsiz >= MINCLSIZE) 588 1.109 matt m_clget(mb, M_WAIT); 589 1.12 mycroft mb->m_len = 0; 590 1.183 christos bpos = mtod(mb, void *); 591 1.148 perry 592 1.12 mycroft /* Finally, return values */ 593 1.12 mycroft *bposp = bpos; 594 1.12 mycroft return (mb); 595 1.12 mycroft } 596 1.12 mycroft 597 1.12 mycroft /* 598 1.12 mycroft * Build the RPC header and fill in the authorization info. 599 1.12 mycroft * The authorization string argument is only used when the credentials 600 1.12 mycroft * come from outside of the kernel. 601 1.12 mycroft * Returns the head of the mbuf list. 602 1.12 mycroft */ 603 1.12 mycroft struct mbuf * 604 1.25 fvdl nfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 605 1.25 fvdl verf_str, mrest, mrest_len, mbp, xidp) 606 1.162 elad kauth_cred_t cr; 607 1.25 fvdl int nmflag; 608 1.12 mycroft int procid; 609 1.12 mycroft int auth_type; 610 1.12 mycroft int auth_len; 611 1.12 mycroft char *auth_str; 612 1.25 fvdl int verf_len; 613 1.25 fvdl char *verf_str; 614 1.12 mycroft struct mbuf *mrest; 615 1.12 mycroft int mrest_len; 616 1.12 mycroft struct mbuf **mbp; 617 1.22 cgd u_int32_t *xidp; 618 1.1 cgd { 619 1.75 augustss struct mbuf *mb; 620 1.75 augustss u_int32_t *tl; 621 1.183 christos char *bpos; 622 1.75 augustss int i; 623 1.109 matt struct mbuf *mreq; 624 1.12 mycroft int siz, grpsiz, authsiz; 625 1.1 cgd 626 1.12 mycroft authsiz = nfsm_rndup(auth_len); 627 1.109 matt mb = m_gethdr(M_WAIT, MT_DATA); 628 1.109 matt MCLAIM(mb, &nfs_mowner); 629 1.25 fvdl if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 630 1.109 matt m_clget(mb, M_WAIT); 631 1.25 fvdl } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 632 1.25 fvdl MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 633 1.12 mycroft } else { 634 1.25 fvdl MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 635 1.1 cgd } 636 1.12 mycroft mb->m_len = 0; 637 1.12 mycroft mreq = mb; 638 1.183 christos bpos = mtod(mb, void *); 639 1.12 mycroft 640 1.12 mycroft /* 641 1.12 mycroft * First the RPC header. 642 1.12 mycroft */ 643 1.25 fvdl nfsm_build(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 644 1.30 fvdl 645 1.126 yamt *tl++ = *xidp = nfs_getxid(); 646 1.1 cgd *tl++ = rpc_call; 647 1.1 cgd *tl++ = rpc_vers; 648 1.179 yamt *tl++ = txdr_unsigned(NFS_PROG); 649 1.179 yamt if (nmflag & NFSMNT_NFSV3) 650 1.179 yamt *tl++ = txdr_unsigned(NFS_VER3); 651 1.179 yamt else 652 1.179 yamt *tl++ = txdr_unsigned(NFS_VER2); 653 1.25 fvdl if (nmflag & NFSMNT_NFSV3) 654 1.25 fvdl *tl++ = txdr_unsigned(procid); 655 1.25 fvdl else 656 1.25 fvdl *tl++ = txdr_unsigned(nfsv2_procid[procid]); 657 1.12 mycroft 658 1.12 mycroft /* 659 1.12 mycroft * And then the authorization cred. 660 1.12 mycroft */ 661 1.12 mycroft *tl++ = txdr_unsigned(auth_type); 662 1.12 mycroft *tl = txdr_unsigned(authsiz); 663 1.12 mycroft switch (auth_type) { 664 1.12 mycroft case RPCAUTH_UNIX: 665 1.22 cgd nfsm_build(tl, u_int32_t *, auth_len); 666 1.12 mycroft *tl++ = 0; /* stamp ?? */ 667 1.12 mycroft *tl++ = 0; /* NULL hostname */ 668 1.162 elad *tl++ = txdr_unsigned(kauth_cred_geteuid(cr)); 669 1.162 elad *tl++ = txdr_unsigned(kauth_cred_getegid(cr)); 670 1.12 mycroft grpsiz = (auth_len >> 2) - 5; 671 1.12 mycroft *tl++ = txdr_unsigned(grpsiz); 672 1.20 mycroft for (i = 0; i < grpsiz; i++) 673 1.162 elad *tl++ = txdr_unsigned(kauth_cred_group(cr, i)); /* XXX elad review */ 674 1.12 mycroft break; 675 1.25 fvdl case RPCAUTH_KERB4: 676 1.12 mycroft siz = auth_len; 677 1.12 mycroft while (siz > 0) { 678 1.12 mycroft if (M_TRAILINGSPACE(mb) == 0) { 679 1.109 matt struct mbuf *mb2; 680 1.109 matt mb2 = m_get(M_WAIT, MT_DATA); 681 1.109 matt MCLAIM(mb2, &nfs_mowner); 682 1.12 mycroft if (siz >= MINCLSIZE) 683 1.109 matt m_clget(mb2, M_WAIT); 684 1.12 mycroft mb->m_next = mb2; 685 1.12 mycroft mb = mb2; 686 1.12 mycroft mb->m_len = 0; 687 1.183 christos bpos = mtod(mb, void *); 688 1.12 mycroft } 689 1.12 mycroft i = min(siz, M_TRAILINGSPACE(mb)); 690 1.63 perry memcpy(bpos, auth_str, i); 691 1.12 mycroft mb->m_len += i; 692 1.12 mycroft auth_str += i; 693 1.12 mycroft bpos += i; 694 1.12 mycroft siz -= i; 695 1.12 mycroft } 696 1.12 mycroft if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 697 1.12 mycroft for (i = 0; i < siz; i++) 698 1.12 mycroft *bpos++ = '\0'; 699 1.12 mycroft mb->m_len += siz; 700 1.12 mycroft } 701 1.12 mycroft break; 702 1.12 mycroft }; 703 1.25 fvdl 704 1.25 fvdl /* 705 1.25 fvdl * And the verifier... 706 1.25 fvdl */ 707 1.25 fvdl nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 708 1.25 fvdl if (verf_str) { 709 1.25 fvdl *tl++ = txdr_unsigned(RPCAUTH_KERB4); 710 1.25 fvdl *tl = txdr_unsigned(verf_len); 711 1.25 fvdl siz = verf_len; 712 1.25 fvdl while (siz > 0) { 713 1.25 fvdl if (M_TRAILINGSPACE(mb) == 0) { 714 1.109 matt struct mbuf *mb2; 715 1.109 matt mb2 = m_get(M_WAIT, MT_DATA); 716 1.109 matt MCLAIM(mb2, &nfs_mowner); 717 1.25 fvdl if (siz >= MINCLSIZE) 718 1.109 matt m_clget(mb2, M_WAIT); 719 1.25 fvdl mb->m_next = mb2; 720 1.25 fvdl mb = mb2; 721 1.25 fvdl mb->m_len = 0; 722 1.183 christos bpos = mtod(mb, void *); 723 1.25 fvdl } 724 1.25 fvdl i = min(siz, M_TRAILINGSPACE(mb)); 725 1.63 perry memcpy(bpos, verf_str, i); 726 1.25 fvdl mb->m_len += i; 727 1.25 fvdl verf_str += i; 728 1.25 fvdl bpos += i; 729 1.25 fvdl siz -= i; 730 1.25 fvdl } 731 1.25 fvdl if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 732 1.25 fvdl for (i = 0; i < siz; i++) 733 1.25 fvdl *bpos++ = '\0'; 734 1.25 fvdl mb->m_len += siz; 735 1.25 fvdl } 736 1.25 fvdl } else { 737 1.25 fvdl *tl++ = txdr_unsigned(RPCAUTH_NULL); 738 1.25 fvdl *tl = 0; 739 1.25 fvdl } 740 1.12 mycroft mb->m_next = mrest; 741 1.25 fvdl mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 742 1.12 mycroft mreq->m_pkthdr.rcvif = (struct ifnet *)0; 743 1.12 mycroft *mbp = mb; 744 1.1 cgd return (mreq); 745 1.1 cgd } 746 1.1 cgd 747 1.1 cgd /* 748 1.1 cgd * copies mbuf chain to the uio scatter/gather list 749 1.1 cgd */ 750 1.24 christos int 751 1.1 cgd nfsm_mbuftouio(mrep, uiop, siz, dpos) 752 1.1 cgd struct mbuf **mrep; 753 1.75 augustss struct uio *uiop; 754 1.1 cgd int siz; 755 1.183 christos char **dpos; 756 1.1 cgd { 757 1.75 augustss char *mbufcp, *uiocp; 758 1.75 augustss int xfer, left, len; 759 1.75 augustss struct mbuf *mp; 760 1.1 cgd long uiosiz, rem; 761 1.1 cgd int error = 0; 762 1.1 cgd 763 1.1 cgd mp = *mrep; 764 1.1 cgd mbufcp = *dpos; 765 1.183 christos len = mtod(mp, char *) + mp->m_len - mbufcp; 766 1.1 cgd rem = nfsm_rndup(siz)-siz; 767 1.1 cgd while (siz > 0) { 768 1.1 cgd if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 769 1.1 cgd return (EFBIG); 770 1.1 cgd left = uiop->uio_iov->iov_len; 771 1.1 cgd uiocp = uiop->uio_iov->iov_base; 772 1.1 cgd if (left > siz) 773 1.1 cgd left = siz; 774 1.1 cgd uiosiz = left; 775 1.1 cgd while (left > 0) { 776 1.1 cgd while (len == 0) { 777 1.1 cgd mp = mp->m_next; 778 1.1 cgd if (mp == NULL) 779 1.1 cgd return (EBADRPC); 780 1.183 christos mbufcp = mtod(mp, void *); 781 1.1 cgd len = mp->m_len; 782 1.1 cgd } 783 1.1 cgd xfer = (left > len) ? len : left; 784 1.158 yamt error = copyout_vmspace(uiop->uio_vmspace, mbufcp, 785 1.158 yamt uiocp, xfer); 786 1.158 yamt if (error) { 787 1.158 yamt return error; 788 1.158 yamt } 789 1.1 cgd left -= xfer; 790 1.1 cgd len -= xfer; 791 1.1 cgd mbufcp += xfer; 792 1.1 cgd uiocp += xfer; 793 1.1 cgd uiop->uio_offset += xfer; 794 1.1 cgd uiop->uio_resid -= xfer; 795 1.1 cgd } 796 1.1 cgd if (uiop->uio_iov->iov_len <= siz) { 797 1.1 cgd uiop->uio_iovcnt--; 798 1.1 cgd uiop->uio_iov++; 799 1.1 cgd } else { 800 1.95 lukem uiop->uio_iov->iov_base = 801 1.183 christos (char *)uiop->uio_iov->iov_base + uiosiz; 802 1.1 cgd uiop->uio_iov->iov_len -= uiosiz; 803 1.1 cgd } 804 1.1 cgd siz -= uiosiz; 805 1.1 cgd } 806 1.1 cgd *dpos = mbufcp; 807 1.1 cgd *mrep = mp; 808 1.1 cgd if (rem > 0) { 809 1.1 cgd if (len < rem) 810 1.1 cgd error = nfs_adv(mrep, dpos, rem, len); 811 1.1 cgd else 812 1.1 cgd *dpos += rem; 813 1.1 cgd } 814 1.1 cgd return (error); 815 1.1 cgd } 816 1.1 cgd 817 1.1 cgd /* 818 1.29 fvdl * copies a uio scatter/gather list to an mbuf chain. 819 1.29 fvdl * NOTE: can ony handle iovcnt == 1 820 1.1 cgd */ 821 1.24 christos int 822 1.1 cgd nfsm_uiotombuf(uiop, mq, siz, bpos) 823 1.75 augustss struct uio *uiop; 824 1.1 cgd struct mbuf **mq; 825 1.1 cgd int siz; 826 1.183 christos char **bpos; 827 1.1 cgd { 828 1.75 augustss char *uiocp; 829 1.75 augustss struct mbuf *mp, *mp2; 830 1.75 augustss int xfer, left, mlen; 831 1.1 cgd int uiosiz, clflg, rem; 832 1.1 cgd char *cp; 833 1.158 yamt int error; 834 1.1 cgd 835 1.29 fvdl #ifdef DIAGNOSTIC 836 1.29 fvdl if (uiop->uio_iovcnt != 1) 837 1.29 fvdl panic("nfsm_uiotombuf: iovcnt != 1"); 838 1.29 fvdl #endif 839 1.29 fvdl 840 1.1 cgd if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 841 1.1 cgd clflg = 1; 842 1.1 cgd else 843 1.1 cgd clflg = 0; 844 1.1 cgd rem = nfsm_rndup(siz)-siz; 845 1.12 mycroft mp = mp2 = *mq; 846 1.1 cgd while (siz > 0) { 847 1.1 cgd left = uiop->uio_iov->iov_len; 848 1.1 cgd uiocp = uiop->uio_iov->iov_base; 849 1.1 cgd if (left > siz) 850 1.1 cgd left = siz; 851 1.1 cgd uiosiz = left; 852 1.1 cgd while (left > 0) { 853 1.12 mycroft mlen = M_TRAILINGSPACE(mp); 854 1.12 mycroft if (mlen == 0) { 855 1.109 matt mp = m_get(M_WAIT, MT_DATA); 856 1.109 matt MCLAIM(mp, &nfs_mowner); 857 1.12 mycroft if (clflg) 858 1.109 matt m_clget(mp, M_WAIT); 859 1.12 mycroft mp->m_len = 0; 860 1.12 mycroft mp2->m_next = mp; 861 1.12 mycroft mp2 = mp; 862 1.12 mycroft mlen = M_TRAILINGSPACE(mp); 863 1.12 mycroft } 864 1.12 mycroft xfer = (left > mlen) ? mlen : left; 865 1.183 christos cp = mtod(mp, char *) + mp->m_len; 866 1.158 yamt error = copyin_vmspace(uiop->uio_vmspace, uiocp, cp, 867 1.158 yamt xfer); 868 1.158 yamt if (error) { 869 1.158 yamt /* XXX */ 870 1.158 yamt } 871 1.12 mycroft mp->m_len += xfer; 872 1.1 cgd left -= xfer; 873 1.1 cgd uiocp += xfer; 874 1.1 cgd uiop->uio_offset += xfer; 875 1.1 cgd uiop->uio_resid -= xfer; 876 1.1 cgd } 877 1.183 christos uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 878 1.95 lukem uiosiz; 879 1.29 fvdl uiop->uio_iov->iov_len -= uiosiz; 880 1.1 cgd siz -= uiosiz; 881 1.1 cgd } 882 1.1 cgd if (rem > 0) { 883 1.12 mycroft if (rem > M_TRAILINGSPACE(mp)) { 884 1.109 matt mp = m_get(M_WAIT, MT_DATA); 885 1.109 matt MCLAIM(mp, &nfs_mowner); 886 1.1 cgd mp->m_len = 0; 887 1.1 cgd mp2->m_next = mp; 888 1.1 cgd } 889 1.183 christos cp = mtod(mp, char *) + mp->m_len; 890 1.1 cgd for (left = 0; left < rem; left++) 891 1.1 cgd *cp++ = '\0'; 892 1.1 cgd mp->m_len += rem; 893 1.1 cgd *bpos = cp; 894 1.1 cgd } else 895 1.183 christos *bpos = mtod(mp, char *) + mp->m_len; 896 1.1 cgd *mq = mp; 897 1.1 cgd return (0); 898 1.1 cgd } 899 1.1 cgd 900 1.1 cgd /* 901 1.39 fvdl * Get at least "siz" bytes of correctly aligned data. 902 1.39 fvdl * When called the mbuf pointers are not necessarily correct, 903 1.39 fvdl * dsosp points to what ought to be in m_data and left contains 904 1.148 perry * what ought to be in m_len. 905 1.12 mycroft * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 906 1.1 cgd * cases. (The macros use the vars. dpos and dpos2) 907 1.1 cgd */ 908 1.24 christos int 909 1.12 mycroft nfsm_disct(mdp, dposp, siz, left, cp2) 910 1.1 cgd struct mbuf **mdp; 911 1.183 christos char **dposp; 912 1.1 cgd int siz; 913 1.1 cgd int left; 914 1.183 christos char **cp2; 915 1.1 cgd { 916 1.75 augustss struct mbuf *m1, *m2; 917 1.39 fvdl struct mbuf *havebuf = NULL; 918 1.183 christos char *src = *dposp; 919 1.183 christos char *dst; 920 1.39 fvdl int len; 921 1.39 fvdl 922 1.39 fvdl #ifdef DEBUG 923 1.39 fvdl if (left < 0) 924 1.148 perry panic("nfsm_disct: left < 0"); 925 1.39 fvdl #endif 926 1.39 fvdl m1 = *mdp; 927 1.39 fvdl /* 928 1.39 fvdl * Skip through the mbuf chain looking for an mbuf with 929 1.39 fvdl * some data. If the first mbuf found has enough data 930 1.39 fvdl * and it is correctly aligned return it. 931 1.39 fvdl */ 932 1.1 cgd while (left == 0) { 933 1.39 fvdl havebuf = m1; 934 1.39 fvdl *mdp = m1 = m1->m_next; 935 1.39 fvdl if (m1 == NULL) 936 1.1 cgd return (EBADRPC); 937 1.183 christos src = mtod(m1, void *); 938 1.39 fvdl left = m1->m_len; 939 1.39 fvdl /* 940 1.39 fvdl * If we start a new mbuf and it is big enough 941 1.39 fvdl * and correctly aligned just return it, don't 942 1.39 fvdl * do any pull up. 943 1.39 fvdl */ 944 1.39 fvdl if (left >= siz && nfsm_aligned(src)) { 945 1.39 fvdl *cp2 = src; 946 1.39 fvdl *dposp = src + siz; 947 1.39 fvdl return (0); 948 1.39 fvdl } 949 1.1 cgd } 950 1.39 fvdl if (m1->m_flags & M_EXT) { 951 1.39 fvdl if (havebuf) { 952 1.39 fvdl /* If the first mbuf with data has external data 953 1.39 fvdl * and there is a previous empty mbuf use it 954 1.39 fvdl * to move the data into. 955 1.39 fvdl */ 956 1.39 fvdl m2 = m1; 957 1.39 fvdl *mdp = m1 = havebuf; 958 1.39 fvdl if (m1->m_flags & M_EXT) { 959 1.41 thorpej MEXTREMOVE(m1); 960 1.1 cgd } 961 1.39 fvdl } else { 962 1.39 fvdl /* 963 1.39 fvdl * If the first mbuf has a external data 964 1.39 fvdl * and there is no previous empty mbuf 965 1.39 fvdl * allocate a new mbuf and move the external 966 1.148 perry * data to the new mbuf. Also make the first 967 1.39 fvdl * mbuf look empty. 968 1.39 fvdl */ 969 1.39 fvdl m2 = m_get(M_WAIT, MT_DATA); 970 1.39 fvdl m2->m_ext = m1->m_ext; 971 1.39 fvdl m2->m_data = src; 972 1.39 fvdl m2->m_len = left; 973 1.41 thorpej MCLADDREFERENCE(m1, m2); 974 1.41 thorpej MEXTREMOVE(m1); 975 1.39 fvdl m2->m_next = m1->m_next; 976 1.39 fvdl m1->m_next = m2; 977 1.1 cgd } 978 1.39 fvdl m1->m_len = 0; 979 1.129 itojun if (m1->m_flags & M_PKTHDR) 980 1.129 itojun dst = m1->m_pktdat; 981 1.129 itojun else 982 1.129 itojun dst = m1->m_dat; 983 1.129 itojun m1->m_data = dst; 984 1.39 fvdl } else { 985 1.39 fvdl /* 986 1.39 fvdl * If the first mbuf has no external data 987 1.39 fvdl * move the data to the front of the mbuf. 988 1.39 fvdl */ 989 1.129 itojun if (m1->m_flags & M_PKTHDR) 990 1.129 itojun dst = m1->m_pktdat; 991 1.129 itojun else 992 1.129 itojun dst = m1->m_dat; 993 1.129 itojun m1->m_data = dst; 994 1.129 itojun if (dst != src) 995 1.63 perry memmove(dst, src, left); 996 1.148 perry dst += left; 997 1.39 fvdl m1->m_len = left; 998 1.39 fvdl m2 = m1->m_next; 999 1.1 cgd } 1000 1.129 itojun *cp2 = m1->m_data; 1001 1.183 christos *dposp = mtod(m1, char *) + siz; 1002 1.39 fvdl /* 1003 1.39 fvdl * Loop through mbufs pulling data up into first mbuf until 1004 1.39 fvdl * the first mbuf is full or there is no more data to 1005 1.39 fvdl * pullup. 1006 1.39 fvdl */ 1007 1.129 itojun while ((len = M_TRAILINGSPACE(m1)) != 0 && m2) { 1008 1.39 fvdl if ((len = min(len, m2->m_len)) != 0) 1009 1.63 perry memcpy(dst, m2->m_data, len); 1010 1.39 fvdl m1->m_len += len; 1011 1.39 fvdl dst += len; 1012 1.39 fvdl m2->m_data += len; 1013 1.39 fvdl m2->m_len -= len; 1014 1.39 fvdl m2 = m2->m_next; 1015 1.39 fvdl } 1016 1.39 fvdl if (m1->m_len < siz) 1017 1.39 fvdl return (EBADRPC); 1018 1.1 cgd return (0); 1019 1.1 cgd } 1020 1.1 cgd 1021 1.1 cgd /* 1022 1.1 cgd * Advance the position in the mbuf chain. 1023 1.1 cgd */ 1024 1.24 christos int 1025 1.1 cgd nfs_adv(mdp, dposp, offs, left) 1026 1.1 cgd struct mbuf **mdp; 1027 1.183 christos char **dposp; 1028 1.1 cgd int offs; 1029 1.1 cgd int left; 1030 1.1 cgd { 1031 1.75 augustss struct mbuf *m; 1032 1.75 augustss int s; 1033 1.1 cgd 1034 1.1 cgd m = *mdp; 1035 1.1 cgd s = left; 1036 1.1 cgd while (s < offs) { 1037 1.1 cgd offs -= s; 1038 1.1 cgd m = m->m_next; 1039 1.1 cgd if (m == NULL) 1040 1.1 cgd return (EBADRPC); 1041 1.1 cgd s = m->m_len; 1042 1.1 cgd } 1043 1.1 cgd *mdp = m; 1044 1.183 christos *dposp = mtod(m, char *) + offs; 1045 1.1 cgd return (0); 1046 1.1 cgd } 1047 1.1 cgd 1048 1.1 cgd /* 1049 1.1 cgd * Copy a string into mbufs for the hard cases... 1050 1.1 cgd */ 1051 1.24 christos int 1052 1.1 cgd nfsm_strtmbuf(mb, bpos, cp, siz) 1053 1.1 cgd struct mbuf **mb; 1054 1.1 cgd char **bpos; 1055 1.33 cgd const char *cp; 1056 1.1 cgd long siz; 1057 1.1 cgd { 1058 1.75 augustss struct mbuf *m1 = NULL, *m2; 1059 1.1 cgd long left, xfer, len, tlen; 1060 1.22 cgd u_int32_t *tl; 1061 1.1 cgd int putsize; 1062 1.1 cgd 1063 1.1 cgd putsize = 1; 1064 1.1 cgd m2 = *mb; 1065 1.12 mycroft left = M_TRAILINGSPACE(m2); 1066 1.1 cgd if (left > 0) { 1067 1.22 cgd tl = ((u_int32_t *)(*bpos)); 1068 1.1 cgd *tl++ = txdr_unsigned(siz); 1069 1.1 cgd putsize = 0; 1070 1.1 cgd left -= NFSX_UNSIGNED; 1071 1.1 cgd m2->m_len += NFSX_UNSIGNED; 1072 1.1 cgd if (left > 0) { 1073 1.183 christos memcpy((void *) tl, cp, left); 1074 1.1 cgd siz -= left; 1075 1.1 cgd cp += left; 1076 1.1 cgd m2->m_len += left; 1077 1.1 cgd left = 0; 1078 1.1 cgd } 1079 1.1 cgd } 1080 1.12 mycroft /* Loop around adding mbufs */ 1081 1.1 cgd while (siz > 0) { 1082 1.109 matt m1 = m_get(M_WAIT, MT_DATA); 1083 1.109 matt MCLAIM(m1, &nfs_mowner); 1084 1.1 cgd if (siz > MLEN) 1085 1.109 matt m_clget(m1, M_WAIT); 1086 1.1 cgd m1->m_len = NFSMSIZ(m1); 1087 1.1 cgd m2->m_next = m1; 1088 1.1 cgd m2 = m1; 1089 1.22 cgd tl = mtod(m1, u_int32_t *); 1090 1.1 cgd tlen = 0; 1091 1.1 cgd if (putsize) { 1092 1.1 cgd *tl++ = txdr_unsigned(siz); 1093 1.1 cgd m1->m_len -= NFSX_UNSIGNED; 1094 1.1 cgd tlen = NFSX_UNSIGNED; 1095 1.1 cgd putsize = 0; 1096 1.1 cgd } 1097 1.1 cgd if (siz < m1->m_len) { 1098 1.1 cgd len = nfsm_rndup(siz); 1099 1.1 cgd xfer = siz; 1100 1.1 cgd if (xfer < len) 1101 1.1 cgd *(tl+(xfer>>2)) = 0; 1102 1.1 cgd } else { 1103 1.1 cgd xfer = len = m1->m_len; 1104 1.1 cgd } 1105 1.183 christos memcpy((void *) tl, cp, xfer); 1106 1.1 cgd m1->m_len = len+tlen; 1107 1.1 cgd siz -= xfer; 1108 1.1 cgd cp += xfer; 1109 1.1 cgd } 1110 1.1 cgd *mb = m1; 1111 1.183 christos *bpos = mtod(m1, char *) + m1->m_len; 1112 1.1 cgd return (0); 1113 1.1 cgd } 1114 1.1 cgd 1115 1.49 fvdl /* 1116 1.49 fvdl * Directory caching routines. They work as follows: 1117 1.49 fvdl * - a cache is maintained per VDIR nfsnode. 1118 1.49 fvdl * - for each offset cookie that is exported to userspace, and can 1119 1.49 fvdl * thus be thrown back at us as an offset to VOP_READDIR, store 1120 1.49 fvdl * information in the cache. 1121 1.49 fvdl * - cached are: 1122 1.49 fvdl * - cookie itself 1123 1.49 fvdl * - blocknumber (essentially just a search key in the buffer cache) 1124 1.49 fvdl * - entry number in block. 1125 1.49 fvdl * - offset cookie of block in which this entry is stored 1126 1.49 fvdl * - 32 bit cookie if NFSMNT_XLATECOOKIE is used. 1127 1.49 fvdl * - entries are looked up in a hash table 1128 1.49 fvdl * - also maintained is an LRU list of entries, used to determine 1129 1.49 fvdl * which ones to delete if the cache grows too large. 1130 1.49 fvdl * - if 32 <-> 64 translation mode is requested for a filesystem, 1131 1.49 fvdl * the cache also functions as a translation table 1132 1.49 fvdl * - in the translation case, invalidating the cache does not mean 1133 1.49 fvdl * flushing it, but just marking entries as invalid, except for 1134 1.49 fvdl * the <64bit cookie, 32bitcookie> pair which is still valid, to 1135 1.49 fvdl * still be able to use the cache as a translation table. 1136 1.49 fvdl * - 32 bit cookies are uniquely created by combining the hash table 1137 1.49 fvdl * entry value, and one generation count per hash table entry, 1138 1.49 fvdl * incremented each time an entry is appended to the chain. 1139 1.49 fvdl * - the cache is invalidated each time a direcory is modified 1140 1.49 fvdl * - sanity checks are also done; if an entry in a block turns 1141 1.49 fvdl * out not to have a matching cookie, the cache is invalidated 1142 1.49 fvdl * and a new block starting from the wanted offset is fetched from 1143 1.49 fvdl * the server. 1144 1.49 fvdl * - directory entries as read from the server are extended to contain 1145 1.49 fvdl * the 64bit and, optionally, the 32bit cookies, for sanity checking 1146 1.49 fvdl * the cache and exporting them to userspace through the cookie 1147 1.49 fvdl * argument to VOP_READDIR. 1148 1.49 fvdl */ 1149 1.49 fvdl 1150 1.46 fvdl u_long 1151 1.46 fvdl nfs_dirhash(off) 1152 1.46 fvdl off_t off; 1153 1.46 fvdl { 1154 1.46 fvdl int i; 1155 1.46 fvdl char *cp = (char *)&off; 1156 1.46 fvdl u_long sum = 0L; 1157 1.46 fvdl 1158 1.46 fvdl for (i = 0 ; i < sizeof (off); i++) 1159 1.46 fvdl sum += *cp++; 1160 1.46 fvdl 1161 1.46 fvdl return sum; 1162 1.46 fvdl } 1163 1.46 fvdl 1164 1.135 yamt #define _NFSDC_MTX(np) (&NFSTOV(np)->v_interlock) 1165 1.135 yamt #define NFSDC_LOCK(np) simple_lock(_NFSDC_MTX(np)) 1166 1.135 yamt #define NFSDC_UNLOCK(np) simple_unlock(_NFSDC_MTX(np)) 1167 1.135 yamt #define NFSDC_ASSERT_LOCKED(np) LOCK_ASSERT(simple_lock_held(_NFSDC_MTX(np))) 1168 1.135 yamt 1169 1.49 fvdl void 1170 1.49 fvdl nfs_initdircache(vp) 1171 1.49 fvdl struct vnode *vp; 1172 1.49 fvdl { 1173 1.49 fvdl struct nfsnode *np = VTONFS(vp); 1174 1.135 yamt struct nfsdirhashhead *dircache; 1175 1.120 yamt 1176 1.135 yamt dircache = hashinit(NFS_DIRHASHSIZ, HASH_LIST, M_NFSDIROFF, 1177 1.135 yamt M_WAITOK, &nfsdirhashmask); 1178 1.49 fvdl 1179 1.135 yamt NFSDC_LOCK(np); 1180 1.135 yamt if (np->n_dircache == NULL) { 1181 1.135 yamt np->n_dircachesize = 0; 1182 1.135 yamt np->n_dircache = dircache; 1183 1.135 yamt dircache = NULL; 1184 1.135 yamt TAILQ_INIT(&np->n_dirchain); 1185 1.135 yamt } 1186 1.135 yamt NFSDC_UNLOCK(np); 1187 1.135 yamt if (dircache) 1188 1.135 yamt hashdone(dircache, M_NFSDIROFF); 1189 1.120 yamt } 1190 1.120 yamt 1191 1.120 yamt void 1192 1.120 yamt nfs_initdirxlatecookie(vp) 1193 1.120 yamt struct vnode *vp; 1194 1.120 yamt { 1195 1.120 yamt struct nfsnode *np = VTONFS(vp); 1196 1.135 yamt unsigned *dirgens; 1197 1.120 yamt 1198 1.120 yamt KASSERT(VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_XLATECOOKIE); 1199 1.120 yamt 1200 1.135 yamt dirgens = malloc(NFS_DIRHASHSIZ * sizeof (unsigned), M_NFSDIROFF, 1201 1.135 yamt M_WAITOK|M_ZERO); 1202 1.135 yamt NFSDC_LOCK(np); 1203 1.135 yamt if (np->n_dirgens == NULL) { 1204 1.135 yamt np->n_dirgens = dirgens; 1205 1.135 yamt dirgens = NULL; 1206 1.135 yamt } 1207 1.135 yamt NFSDC_UNLOCK(np); 1208 1.135 yamt if (dirgens) 1209 1.135 yamt free(dirgens, M_NFSDIROFF); 1210 1.135 yamt } 1211 1.135 yamt 1212 1.135 yamt static const struct nfsdircache dzero; 1213 1.135 yamt 1214 1.135 yamt static void nfs_unlinkdircache __P((struct nfsnode *np, struct nfsdircache *)); 1215 1.135 yamt static void nfs_putdircache_unlocked __P((struct nfsnode *, 1216 1.135 yamt struct nfsdircache *)); 1217 1.135 yamt 1218 1.135 yamt static void 1219 1.135 yamt nfs_unlinkdircache(np, ndp) 1220 1.135 yamt struct nfsnode *np; 1221 1.135 yamt struct nfsdircache *ndp; 1222 1.135 yamt { 1223 1.135 yamt 1224 1.135 yamt NFSDC_ASSERT_LOCKED(np); 1225 1.135 yamt KASSERT(ndp != &dzero); 1226 1.135 yamt 1227 1.135 yamt if (LIST_NEXT(ndp, dc_hash) == (void *)-1) 1228 1.135 yamt return; 1229 1.135 yamt 1230 1.135 yamt TAILQ_REMOVE(&np->n_dirchain, ndp, dc_chain); 1231 1.135 yamt LIST_REMOVE(ndp, dc_hash); 1232 1.135 yamt LIST_NEXT(ndp, dc_hash) = (void *)-1; /* mark as unlinked */ 1233 1.135 yamt 1234 1.135 yamt nfs_putdircache_unlocked(np, ndp); 1235 1.135 yamt } 1236 1.135 yamt 1237 1.135 yamt void 1238 1.135 yamt nfs_putdircache(np, ndp) 1239 1.135 yamt struct nfsnode *np; 1240 1.135 yamt struct nfsdircache *ndp; 1241 1.135 yamt { 1242 1.135 yamt int ref; 1243 1.135 yamt 1244 1.135 yamt if (ndp == &dzero) 1245 1.135 yamt return; 1246 1.135 yamt 1247 1.135 yamt KASSERT(ndp->dc_refcnt > 0); 1248 1.135 yamt NFSDC_LOCK(np); 1249 1.135 yamt ref = --ndp->dc_refcnt; 1250 1.135 yamt NFSDC_UNLOCK(np); 1251 1.135 yamt 1252 1.135 yamt if (ref == 0) 1253 1.135 yamt free(ndp, M_NFSDIROFF); 1254 1.49 fvdl } 1255 1.49 fvdl 1256 1.135 yamt static void 1257 1.177 yamt nfs_putdircache_unlocked(struct nfsnode *np, struct nfsdircache *ndp) 1258 1.135 yamt { 1259 1.135 yamt int ref; 1260 1.135 yamt 1261 1.135 yamt NFSDC_ASSERT_LOCKED(np); 1262 1.135 yamt 1263 1.135 yamt if (ndp == &dzero) 1264 1.135 yamt return; 1265 1.135 yamt 1266 1.135 yamt KASSERT(ndp->dc_refcnt > 0); 1267 1.135 yamt ref = --ndp->dc_refcnt; 1268 1.135 yamt if (ref == 0) 1269 1.135 yamt free(ndp, M_NFSDIROFF); 1270 1.135 yamt } 1271 1.46 fvdl 1272 1.46 fvdl struct nfsdircache * 1273 1.49 fvdl nfs_searchdircache(vp, off, do32, hashent) 1274 1.46 fvdl struct vnode *vp; 1275 1.46 fvdl off_t off; 1276 1.49 fvdl int do32; 1277 1.49 fvdl int *hashent; 1278 1.49 fvdl { 1279 1.49 fvdl struct nfsdirhashhead *ndhp; 1280 1.49 fvdl struct nfsdircache *ndp = NULL; 1281 1.49 fvdl struct nfsnode *np = VTONFS(vp); 1282 1.49 fvdl unsigned ent; 1283 1.49 fvdl 1284 1.49 fvdl /* 1285 1.49 fvdl * Zero is always a valid cookie. 1286 1.49 fvdl */ 1287 1.49 fvdl if (off == 0) 1288 1.149 christos /* XXXUNCONST */ 1289 1.149 christos return (struct nfsdircache *)__UNCONST(&dzero); 1290 1.49 fvdl 1291 1.134 yamt if (!np->n_dircache) 1292 1.134 yamt return NULL; 1293 1.134 yamt 1294 1.49 fvdl /* 1295 1.49 fvdl * We use a 32bit cookie as search key, directly reconstruct 1296 1.49 fvdl * the hashentry. Else use the hashfunction. 1297 1.49 fvdl */ 1298 1.49 fvdl if (do32) { 1299 1.49 fvdl ent = (u_int32_t)off >> 24; 1300 1.49 fvdl if (ent >= NFS_DIRHASHSIZ) 1301 1.49 fvdl return NULL; 1302 1.49 fvdl ndhp = &np->n_dircache[ent]; 1303 1.49 fvdl } else { 1304 1.49 fvdl ndhp = NFSDIRHASH(np, off); 1305 1.49 fvdl } 1306 1.49 fvdl 1307 1.49 fvdl if (hashent) 1308 1.49 fvdl *hashent = (int)(ndhp - np->n_dircache); 1309 1.135 yamt 1310 1.135 yamt NFSDC_LOCK(np); 1311 1.49 fvdl if (do32) { 1312 1.113 yamt LIST_FOREACH(ndp, ndhp, dc_hash) { 1313 1.49 fvdl if (ndp->dc_cookie32 == (u_int32_t)off) { 1314 1.49 fvdl /* 1315 1.49 fvdl * An invalidated entry will become the 1316 1.49 fvdl * start of a new block fetched from 1317 1.49 fvdl * the server. 1318 1.49 fvdl */ 1319 1.135 yamt if (ndp->dc_flags & NFSDC_INVALID) { 1320 1.49 fvdl ndp->dc_blkcookie = ndp->dc_cookie; 1321 1.49 fvdl ndp->dc_entry = 0; 1322 1.135 yamt ndp->dc_flags &= ~NFSDC_INVALID; 1323 1.49 fvdl } 1324 1.49 fvdl break; 1325 1.49 fvdl } 1326 1.49 fvdl } 1327 1.49 fvdl } else { 1328 1.113 yamt LIST_FOREACH(ndp, ndhp, dc_hash) { 1329 1.49 fvdl if (ndp->dc_cookie == off) 1330 1.49 fvdl break; 1331 1.113 yamt } 1332 1.49 fvdl } 1333 1.135 yamt if (ndp != NULL) 1334 1.135 yamt ndp->dc_refcnt++; 1335 1.135 yamt NFSDC_UNLOCK(np); 1336 1.49 fvdl return ndp; 1337 1.49 fvdl } 1338 1.49 fvdl 1339 1.49 fvdl 1340 1.49 fvdl struct nfsdircache * 1341 1.171 christos nfs_enterdircache(struct vnode *vp, off_t off, off_t blkoff, int en, 1342 1.177 yamt daddr_t blkno) 1343 1.46 fvdl { 1344 1.46 fvdl struct nfsnode *np = VTONFS(vp); 1345 1.46 fvdl struct nfsdirhashhead *ndhp; 1346 1.135 yamt struct nfsdircache *ndp = NULL; 1347 1.135 yamt struct nfsdircache *newndp = NULL; 1348 1.49 fvdl struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1349 1.161 christos int hashent = 0, gen, overwrite; /* XXX: GCC */ 1350 1.46 fvdl 1351 1.135 yamt /* 1352 1.135 yamt * XXX refuse entries for offset 0. amd(8) erroneously sets 1353 1.135 yamt * cookie 0 for the '.' entry, making this necessary. This 1354 1.135 yamt * isn't so bad, as 0 is a special case anyway. 1355 1.135 yamt */ 1356 1.135 yamt if (off == 0) 1357 1.149 christos /* XXXUNCONST */ 1358 1.149 christos return (struct nfsdircache *)__UNCONST(&dzero); 1359 1.135 yamt 1360 1.49 fvdl if (!np->n_dircache) 1361 1.49 fvdl /* 1362 1.49 fvdl * XXX would like to do this in nfs_nget but vtype 1363 1.49 fvdl * isn't known at that time. 1364 1.49 fvdl */ 1365 1.49 fvdl nfs_initdircache(vp); 1366 1.50 fvdl 1367 1.120 yamt if ((nmp->nm_flag & NFSMNT_XLATECOOKIE) && !np->n_dirgens) 1368 1.120 yamt nfs_initdirxlatecookie(vp); 1369 1.120 yamt 1370 1.135 yamt retry: 1371 1.49 fvdl ndp = nfs_searchdircache(vp, off, 0, &hashent); 1372 1.49 fvdl 1373 1.135 yamt NFSDC_LOCK(np); 1374 1.135 yamt if (ndp && (ndp->dc_flags & NFSDC_INVALID) == 0) { 1375 1.49 fvdl /* 1376 1.49 fvdl * Overwriting an old entry. Check if it's the same. 1377 1.49 fvdl * If so, just return. If not, remove the old entry. 1378 1.49 fvdl */ 1379 1.49 fvdl if (ndp->dc_blkcookie == blkoff && ndp->dc_entry == en) 1380 1.135 yamt goto done; 1381 1.135 yamt nfs_unlinkdircache(np, ndp); 1382 1.135 yamt nfs_putdircache_unlocked(np, ndp); 1383 1.135 yamt ndp = NULL; 1384 1.46 fvdl } 1385 1.46 fvdl 1386 1.49 fvdl ndhp = &np->n_dircache[hashent]; 1387 1.46 fvdl 1388 1.49 fvdl if (!ndp) { 1389 1.135 yamt if (newndp == NULL) { 1390 1.135 yamt NFSDC_UNLOCK(np); 1391 1.135 yamt newndp = malloc(sizeof(*ndp), M_NFSDIROFF, M_WAITOK); 1392 1.135 yamt newndp->dc_refcnt = 1; 1393 1.135 yamt LIST_NEXT(newndp, dc_hash) = (void *)-1; 1394 1.135 yamt goto retry; 1395 1.135 yamt } 1396 1.135 yamt ndp = newndp; 1397 1.135 yamt newndp = NULL; 1398 1.49 fvdl overwrite = 0; 1399 1.49 fvdl if (nmp->nm_flag & NFSMNT_XLATECOOKIE) { 1400 1.49 fvdl /* 1401 1.49 fvdl * We're allocating a new entry, so bump the 1402 1.49 fvdl * generation number. 1403 1.49 fvdl */ 1404 1.160 christos KASSERT(np->n_dirgens); 1405 1.49 fvdl gen = ++np->n_dirgens[hashent]; 1406 1.49 fvdl if (gen == 0) { 1407 1.49 fvdl np->n_dirgens[hashent]++; 1408 1.49 fvdl gen++; 1409 1.49 fvdl } 1410 1.49 fvdl ndp->dc_cookie32 = (hashent << 24) | (gen & 0xffffff); 1411 1.49 fvdl } 1412 1.49 fvdl } else 1413 1.49 fvdl overwrite = 1; 1414 1.46 fvdl 1415 1.49 fvdl ndp->dc_cookie = off; 1416 1.49 fvdl ndp->dc_blkcookie = blkoff; 1417 1.46 fvdl ndp->dc_entry = en; 1418 1.137 yamt ndp->dc_flags = 0; 1419 1.46 fvdl 1420 1.49 fvdl if (overwrite) 1421 1.135 yamt goto done; 1422 1.49 fvdl 1423 1.46 fvdl /* 1424 1.46 fvdl * If the maximum directory cookie cache size has been reached 1425 1.46 fvdl * for this node, take one off the front. The idea is that 1426 1.46 fvdl * directories are typically read front-to-back once, so that 1427 1.46 fvdl * the oldest entries can be thrown away without much performance 1428 1.46 fvdl * loss. 1429 1.46 fvdl */ 1430 1.46 fvdl if (np->n_dircachesize == NFS_MAXDIRCACHE) { 1431 1.135 yamt nfs_unlinkdircache(np, TAILQ_FIRST(&np->n_dirchain)); 1432 1.46 fvdl } else 1433 1.46 fvdl np->n_dircachesize++; 1434 1.148 perry 1435 1.135 yamt KASSERT(ndp->dc_refcnt == 1); 1436 1.46 fvdl LIST_INSERT_HEAD(ndhp, ndp, dc_hash); 1437 1.46 fvdl TAILQ_INSERT_TAIL(&np->n_dirchain, ndp, dc_chain); 1438 1.135 yamt ndp->dc_refcnt++; 1439 1.135 yamt done: 1440 1.135 yamt KASSERT(ndp->dc_refcnt > 0); 1441 1.135 yamt NFSDC_UNLOCK(np); 1442 1.135 yamt if (newndp) 1443 1.135 yamt nfs_putdircache(np, newndp); 1444 1.46 fvdl return ndp; 1445 1.46 fvdl } 1446 1.46 fvdl 1447 1.46 fvdl void 1448 1.145 yamt nfs_invaldircache(vp, flags) 1449 1.46 fvdl struct vnode *vp; 1450 1.145 yamt int flags; 1451 1.46 fvdl { 1452 1.46 fvdl struct nfsnode *np = VTONFS(vp); 1453 1.46 fvdl struct nfsdircache *ndp = NULL; 1454 1.49 fvdl struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1455 1.181 thorpej const bool forcefree = flags & NFS_INVALDIRCACHE_FORCE; 1456 1.46 fvdl 1457 1.46 fvdl #ifdef DIAGNOSTIC 1458 1.46 fvdl if (vp->v_type != VDIR) 1459 1.46 fvdl panic("nfs: invaldircache: not dir"); 1460 1.46 fvdl #endif 1461 1.46 fvdl 1462 1.145 yamt if ((flags & NFS_INVALDIRCACHE_KEEPEOF) == 0) 1463 1.145 yamt np->n_flag &= ~NEOFVALID; 1464 1.144 yamt 1465 1.46 fvdl if (!np->n_dircache) 1466 1.46 fvdl return; 1467 1.46 fvdl 1468 1.135 yamt NFSDC_LOCK(np); 1469 1.49 fvdl if (!(nmp->nm_flag & NFSMNT_XLATECOOKIE) || forcefree) { 1470 1.135 yamt while ((ndp = TAILQ_FIRST(&np->n_dirchain)) != NULL) { 1471 1.135 yamt KASSERT(!forcefree || ndp->dc_refcnt == 1); 1472 1.135 yamt nfs_unlinkdircache(np, ndp); 1473 1.49 fvdl } 1474 1.49 fvdl np->n_dircachesize = 0; 1475 1.49 fvdl if (forcefree && np->n_dirgens) { 1476 1.49 fvdl FREE(np->n_dirgens, M_NFSDIROFF); 1477 1.120 yamt np->n_dirgens = NULL; 1478 1.49 fvdl } 1479 1.49 fvdl } else { 1480 1.135 yamt TAILQ_FOREACH(ndp, &np->n_dirchain, dc_chain) 1481 1.135 yamt ndp->dc_flags |= NFSDC_INVALID; 1482 1.46 fvdl } 1483 1.46 fvdl 1484 1.135 yamt NFSDC_UNLOCK(np); 1485 1.46 fvdl } 1486 1.46 fvdl 1487 1.1 cgd /* 1488 1.35 thorpej * Called once before VFS init to initialize shared and 1489 1.35 thorpej * server-specific data structures. 1490 1.1 cgd */ 1491 1.157 yamt static int 1492 1.155 thorpej nfs_init0(void) 1493 1.1 cgd { 1494 1.189 ad 1495 1.12 mycroft nfsrtt.pos = 0; 1496 1.1 cgd rpc_vers = txdr_unsigned(RPC_VER2); 1497 1.1 cgd rpc_call = txdr_unsigned(RPC_CALL); 1498 1.1 cgd rpc_reply = txdr_unsigned(RPC_REPLY); 1499 1.1 cgd rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 1500 1.1 cgd rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 1501 1.1 cgd rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 1502 1.12 mycroft rpc_autherr = txdr_unsigned(RPC_AUTHERR); 1503 1.1 cgd rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 1504 1.25 fvdl rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 1505 1.1 cgd nfs_prog = txdr_unsigned(NFS_PROG); 1506 1.182 thorpej nfs_true = txdr_unsigned(true); 1507 1.182 thorpej nfs_false = txdr_unsigned(false); 1508 1.12 mycroft nfs_xdrneg1 = txdr_unsigned(-1); 1509 1.25 fvdl nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 1510 1.25 fvdl if (nfs_ticks < 1) 1511 1.25 fvdl nfs_ticks = 1; 1512 1.2 glass #ifdef NFSSERVER 1513 1.12 mycroft nfsrv_init(0); /* Init server data structures */ 1514 1.1 cgd nfsrv_initcache(); /* Init the server request cache */ 1515 1.190 ad { 1516 1.190 ad extern krwlock_t netexport_lock; /* XXX */ 1517 1.190 ad rw_init(&netexport_lock); 1518 1.190 ad } 1519 1.36 fvdl #endif /* NFSSERVER */ 1520 1.12 mycroft 1521 1.164 yamt #if defined(NFSSERVER) || (defined(NFS) && !defined(NFS_V2_ONLY)) 1522 1.164 yamt nfsdreq_init(); 1523 1.164 yamt #endif /* defined(NFSSERVER) || (defined(NFS) && !defined(NFS_V2_ONLY)) */ 1524 1.164 yamt 1525 1.1 cgd /* 1526 1.1 cgd * Initialize reply list and start timer 1527 1.1 cgd */ 1528 1.16 mycroft TAILQ_INIT(&nfs_reqq); 1529 1.191 yamt nfs_timer_init(); 1530 1.109 matt MOWNER_ATTACH(&nfs_mowner); 1531 1.106 jdolecek 1532 1.106 jdolecek #ifdef NFS 1533 1.106 jdolecek /* Initialize the kqueue structures */ 1534 1.106 jdolecek nfs_kqinit(); 1535 1.119 yamt /* Initialize the iod structures */ 1536 1.119 yamt nfs_iodinit(); 1537 1.106 jdolecek #endif 1538 1.157 yamt return 0; 1539 1.1 cgd } 1540 1.1 cgd 1541 1.155 thorpej void 1542 1.155 thorpej nfs_init(void) 1543 1.155 thorpej { 1544 1.155 thorpej static ONCE_DECL(nfs_init_once); 1545 1.155 thorpej 1546 1.155 thorpej RUN_ONCE(&nfs_init_once, nfs_init0); 1547 1.155 thorpej } 1548 1.155 thorpej 1549 1.38 thorpej #ifdef NFS 1550 1.35 thorpej /* 1551 1.35 thorpej * Called once at VFS init to initialize client-specific data structures. 1552 1.35 thorpej */ 1553 1.35 thorpej void 1554 1.35 thorpej nfs_vfs_init() 1555 1.35 thorpej { 1556 1.155 thorpej /* Initialize NFS server / client shared data. */ 1557 1.155 thorpej nfs_init(); 1558 1.155 thorpej 1559 1.96 chs nfs_nhinit(); /* Init the nfsnode table */ 1560 1.100 chs nfs_commitsize = uvmexp.npages << (PAGE_SHIFT - 4); 1561 1.96 chs } 1562 1.35 thorpej 1563 1.96 chs void 1564 1.96 chs nfs_vfs_reinit() 1565 1.96 chs { 1566 1.96 chs nfs_nhreinit(); 1567 1.73 jdolecek } 1568 1.73 jdolecek 1569 1.73 jdolecek void 1570 1.73 jdolecek nfs_vfs_done() 1571 1.73 jdolecek { 1572 1.73 jdolecek nfs_nhdone(); 1573 1.35 thorpej } 1574 1.35 thorpej 1575 1.1 cgd /* 1576 1.12 mycroft * Attribute cache routines. 1577 1.12 mycroft * nfs_loadattrcache() - loads or updates the cache contents from attributes 1578 1.12 mycroft * that are on the mbuf list 1579 1.12 mycroft * nfs_getattrcache() - returns valid attributes if found in cache, returns 1580 1.12 mycroft * error otherwise 1581 1.1 cgd */ 1582 1.12 mycroft 1583 1.12 mycroft /* 1584 1.12 mycroft * Load the attribute cache (that lives in the nfsnode entry) with 1585 1.12 mycroft * the values on the mbuf list and 1586 1.12 mycroft * Iff vap not NULL 1587 1.12 mycroft * copy the attributes to *vaper 1588 1.12 mycroft */ 1589 1.24 christos int 1590 1.105 yamt nfsm_loadattrcache(vpp, mdp, dposp, vaper, flags) 1591 1.12 mycroft struct vnode **vpp; 1592 1.12 mycroft struct mbuf **mdp; 1593 1.183 christos char **dposp; 1594 1.12 mycroft struct vattr *vaper; 1595 1.105 yamt int flags; 1596 1.1 cgd { 1597 1.75 augustss int32_t t1; 1598 1.183 christos char *cp2; 1599 1.25 fvdl int error = 0; 1600 1.12 mycroft struct mbuf *md; 1601 1.45 fvdl int v3 = NFS_ISV3(*vpp); 1602 1.1 cgd 1603 1.12 mycroft md = *mdp; 1604 1.183 christos t1 = (mtod(md, char *) + md->m_len) - *dposp; 1605 1.25 fvdl error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2); 1606 1.24 christos if (error) 1607 1.12 mycroft return (error); 1608 1.105 yamt return nfs_loadattrcache(vpp, (struct nfs_fattr *)cp2, vaper, flags); 1609 1.45 fvdl } 1610 1.45 fvdl 1611 1.45 fvdl int 1612 1.105 yamt nfs_loadattrcache(vpp, fp, vaper, flags) 1613 1.45 fvdl struct vnode **vpp; 1614 1.45 fvdl struct nfs_fattr *fp; 1615 1.45 fvdl struct vattr *vaper; 1616 1.105 yamt int flags; 1617 1.45 fvdl { 1618 1.75 augustss struct vnode *vp = *vpp; 1619 1.75 augustss struct vattr *vap; 1620 1.45 fvdl int v3 = NFS_ISV3(vp); 1621 1.45 fvdl enum vtype vtyp; 1622 1.45 fvdl u_short vmode; 1623 1.45 fvdl struct timespec mtime; 1624 1.139 yamt struct timespec ctime; 1625 1.45 fvdl struct vnode *nvp; 1626 1.45 fvdl int32_t rdev; 1627 1.75 augustss struct nfsnode *np; 1628 1.45 fvdl extern int (**spec_nfsv2nodeop_p) __P((void *)); 1629 1.101 fvdl uid_t uid; 1630 1.101 fvdl gid_t gid; 1631 1.45 fvdl 1632 1.25 fvdl if (v3) { 1633 1.25 fvdl vtyp = nfsv3tov_type(fp->fa_type); 1634 1.25 fvdl vmode = fxdr_unsigned(u_short, fp->fa_mode); 1635 1.71 is rdev = makedev(fxdr_unsigned(u_int32_t, fp->fa3_rdev.specdata1), 1636 1.71 is fxdr_unsigned(u_int32_t, fp->fa3_rdev.specdata2)); 1637 1.25 fvdl fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 1638 1.139 yamt fxdr_nfsv3time(&fp->fa3_ctime, &ctime); 1639 1.12 mycroft } else { 1640 1.25 fvdl vtyp = nfsv2tov_type(fp->fa_type); 1641 1.25 fvdl vmode = fxdr_unsigned(u_short, fp->fa_mode); 1642 1.25 fvdl if (vtyp == VNON || vtyp == VREG) 1643 1.25 fvdl vtyp = IFTOVT(vmode); 1644 1.25 fvdl rdev = fxdr_unsigned(int32_t, fp->fa2_rdev); 1645 1.25 fvdl fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 1646 1.139 yamt ctime.tv_sec = fxdr_unsigned(u_int32_t, 1647 1.139 yamt fp->fa2_ctime.nfsv2_sec); 1648 1.139 yamt ctime.tv_nsec = 0; 1649 1.25 fvdl 1650 1.25 fvdl /* 1651 1.25 fvdl * Really ugly NFSv2 kludge. 1652 1.25 fvdl */ 1653 1.25 fvdl if (vtyp == VCHR && rdev == 0xffffffff) 1654 1.25 fvdl vtyp = VFIFO; 1655 1.12 mycroft } 1656 1.25 fvdl 1657 1.101 fvdl vmode &= ALLPERMS; 1658 1.101 fvdl 1659 1.12 mycroft /* 1660 1.12 mycroft * If v_type == VNON it is a new node, so fill in the v_type, 1661 1.148 perry * n_mtime fields. Check to see if it represents a special 1662 1.12 mycroft * device, and if so, check for a possible alias. Once the 1663 1.12 mycroft * correct vnode has been obtained, fill in the rest of the 1664 1.12 mycroft * information. 1665 1.12 mycroft */ 1666 1.12 mycroft np = VTONFS(vp); 1667 1.87 fvdl if (vp->v_type == VNON) { 1668 1.25 fvdl vp->v_type = vtyp; 1669 1.12 mycroft if (vp->v_type == VFIFO) { 1670 1.24 christos extern int (**fifo_nfsv2nodeop_p) __P((void *)); 1671 1.12 mycroft vp->v_op = fifo_nfsv2nodeop_p; 1672 1.131 yamt } else if (vp->v_type == VREG) { 1673 1.180 yamt mutex_init(&np->n_commitlock, MUTEX_DEFAULT, IPL_NONE); 1674 1.131 yamt } else if (vp->v_type == VCHR || vp->v_type == VBLK) { 1675 1.12 mycroft vp->v_op = spec_nfsv2nodeop_p; 1676 1.24 christos nvp = checkalias(vp, (dev_t)rdev, vp->v_mount); 1677 1.24 christos if (nvp) { 1678 1.12 mycroft /* 1679 1.12 mycroft * Discard unneeded vnode, but save its nfsnode. 1680 1.25 fvdl * Since the nfsnode does not have a lock, its 1681 1.25 fvdl * vnode lock has to be carried over. 1682 1.12 mycroft */ 1683 1.94 bjh21 /* 1684 1.94 bjh21 * XXX is the old node sure to be locked here? 1685 1.94 bjh21 */ 1686 1.94 bjh21 KASSERT(lockstatus(&vp->v_lock) == 1687 1.94 bjh21 LK_EXCLUSIVE); 1688 1.12 mycroft nvp->v_data = vp->v_data; 1689 1.12 mycroft vp->v_data = NULL; 1690 1.93 fvdl VOP_UNLOCK(vp, 0); 1691 1.12 mycroft vp->v_op = spec_vnodeop_p; 1692 1.93 fvdl vrele(vp); 1693 1.12 mycroft vgone(vp); 1694 1.94 bjh21 lockmgr(&nvp->v_lock, LK_EXCLUSIVE, 1695 1.94 bjh21 &nvp->v_interlock); 1696 1.12 mycroft /* 1697 1.12 mycroft * Reinitialize aliased node. 1698 1.12 mycroft */ 1699 1.12 mycroft np->n_vnode = nvp; 1700 1.12 mycroft *vpp = vp = nvp; 1701 1.12 mycroft } 1702 1.12 mycroft } 1703 1.128 yamt np->n_mtime = mtime; 1704 1.12 mycroft } 1705 1.101 fvdl uid = fxdr_unsigned(uid_t, fp->fa_uid); 1706 1.101 fvdl gid = fxdr_unsigned(gid_t, fp->fa_gid); 1707 1.49 fvdl vap = np->n_vattr; 1708 1.101 fvdl 1709 1.101 fvdl /* 1710 1.139 yamt * Invalidate access cache if uid, gid, mode or ctime changed. 1711 1.101 fvdl */ 1712 1.101 fvdl if (np->n_accstamp != -1 && 1713 1.139 yamt (gid != vap->va_gid || uid != vap->va_uid || vmode != vap->va_mode 1714 1.139 yamt || timespeccmp(&ctime, &vap->va_ctime, !=))) 1715 1.101 fvdl np->n_accstamp = -1; 1716 1.101 fvdl 1717 1.12 mycroft vap->va_type = vtyp; 1718 1.101 fvdl vap->va_mode = vmode; 1719 1.12 mycroft vap->va_rdev = (dev_t)rdev; 1720 1.12 mycroft vap->va_mtime = mtime; 1721 1.139 yamt vap->va_ctime = ctime; 1722 1.133 christos vap->va_fsid = vp->v_mount->mnt_stat.f_fsidx.__fsid_val[0]; 1723 1.72 fvdl switch (vtyp) { 1724 1.72 fvdl case VDIR: 1725 1.72 fvdl vap->va_blocksize = NFS_DIRFRAGSIZ; 1726 1.72 fvdl break; 1727 1.72 fvdl case VBLK: 1728 1.72 fvdl vap->va_blocksize = BLKDEV_IOSIZE; 1729 1.72 fvdl break; 1730 1.72 fvdl case VCHR: 1731 1.72 fvdl vap->va_blocksize = MAXBSIZE; 1732 1.72 fvdl break; 1733 1.72 fvdl default: 1734 1.72 fvdl vap->va_blocksize = v3 ? vp->v_mount->mnt_stat.f_iosize : 1735 1.72 fvdl fxdr_unsigned(int32_t, fp->fa2_blocksize); 1736 1.72 fvdl break; 1737 1.72 fvdl } 1738 1.25 fvdl if (v3) { 1739 1.25 fvdl vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1740 1.101 fvdl vap->va_uid = uid; 1741 1.101 fvdl vap->va_gid = gid; 1742 1.66 fair vap->va_size = fxdr_hyper(&fp->fa3_size); 1743 1.66 fair vap->va_bytes = fxdr_hyper(&fp->fa3_used); 1744 1.151 yamt vap->va_fileid = fxdr_hyper(&fp->fa3_fileid); 1745 1.25 fvdl fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 1746 1.25 fvdl vap->va_flags = 0; 1747 1.25 fvdl vap->va_filerev = 0; 1748 1.12 mycroft } else { 1749 1.25 fvdl vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1750 1.101 fvdl vap->va_uid = uid; 1751 1.101 fvdl vap->va_gid = gid; 1752 1.25 fvdl vap->va_size = fxdr_unsigned(u_int32_t, fp->fa2_size); 1753 1.25 fvdl vap->va_bytes = fxdr_unsigned(int32_t, fp->fa2_blocks) 1754 1.25 fvdl * NFS_FABLKSIZE; 1755 1.25 fvdl vap->va_fileid = fxdr_unsigned(int32_t, fp->fa2_fileid); 1756 1.25 fvdl fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 1757 1.12 mycroft vap->va_flags = 0; 1758 1.25 fvdl vap->va_gen = fxdr_unsigned(u_int32_t,fp->fa2_ctime.nfsv2_usec); 1759 1.12 mycroft vap->va_filerev = 0; 1760 1.12 mycroft } 1761 1.12 mycroft if (vap->va_size != np->n_size) { 1762 1.89 chs if ((np->n_flag & NMODIFIED) && vap->va_size < np->n_size) { 1763 1.89 chs vap->va_size = np->n_size; 1764 1.89 chs } else { 1765 1.12 mycroft np->n_size = vap->va_size; 1766 1.89 chs if (vap->va_type == VREG) { 1767 1.140 yamt /* 1768 1.140 yamt * we can't free pages if NAC_NOTRUNC because 1769 1.140 yamt * the pages can be owned by ourselves. 1770 1.140 yamt */ 1771 1.140 yamt if (flags & NAC_NOTRUNC) { 1772 1.105 yamt np->n_flag |= NTRUNCDELAYED; 1773 1.140 yamt } else { 1774 1.174 yamt genfs_node_wrlock(vp); 1775 1.140 yamt simple_lock(&vp->v_interlock); 1776 1.140 yamt (void)VOP_PUTPAGES(vp, 0, 1777 1.140 yamt 0, PGO_SYNCIO | PGO_CLEANIT | 1778 1.140 yamt PGO_FREE | PGO_ALLPAGES); 1779 1.105 yamt uvm_vnp_setsize(vp, np->n_size); 1780 1.174 yamt genfs_node_unlock(vp); 1781 1.105 yamt } 1782 1.89 chs } 1783 1.89 chs } 1784 1.12 mycroft } 1785 1.165 kardel np->n_attrstamp = time_second; 1786 1.12 mycroft if (vaper != NULL) { 1787 1.183 christos memcpy((void *)vaper, (void *)vap, sizeof(*vap)); 1788 1.12 mycroft if (np->n_flag & NCHG) { 1789 1.25 fvdl if (np->n_flag & NACC) 1790 1.25 fvdl vaper->va_atime = np->n_atim; 1791 1.25 fvdl if (np->n_flag & NUPD) 1792 1.25 fvdl vaper->va_mtime = np->n_mtim; 1793 1.12 mycroft } 1794 1.12 mycroft } 1795 1.12 mycroft return (0); 1796 1.12 mycroft } 1797 1.12 mycroft 1798 1.12 mycroft /* 1799 1.12 mycroft * Check the time stamp 1800 1.12 mycroft * If the cache is valid, copy contents to *vap and return 0 1801 1.12 mycroft * otherwise return an error 1802 1.12 mycroft */ 1803 1.24 christos int 1804 1.12 mycroft nfs_getattrcache(vp, vaper) 1805 1.75 augustss struct vnode *vp; 1806 1.12 mycroft struct vattr *vaper; 1807 1.12 mycroft { 1808 1.75 augustss struct nfsnode *np = VTONFS(vp); 1809 1.152 christos struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1810 1.75 augustss struct vattr *vap; 1811 1.12 mycroft 1812 1.132 yamt if (np->n_attrstamp == 0 || 1813 1.165 kardel (time_second - np->n_attrstamp) >= NFS_ATTRTIMEO(nmp, np)) { 1814 1.12 mycroft nfsstats.attrcache_misses++; 1815 1.12 mycroft return (ENOENT); 1816 1.12 mycroft } 1817 1.12 mycroft nfsstats.attrcache_hits++; 1818 1.49 fvdl vap = np->n_vattr; 1819 1.12 mycroft if (vap->va_size != np->n_size) { 1820 1.12 mycroft if (vap->va_type == VREG) { 1821 1.188 yamt if ((np->n_flag & NMODIFIED) != 0 && 1822 1.188 yamt vap->va_size < np->n_size) { 1823 1.188 yamt vap->va_size = np->n_size; 1824 1.188 yamt } else { 1825 1.12 mycroft np->n_size = vap->va_size; 1826 1.188 yamt } 1827 1.174 yamt genfs_node_wrlock(vp); 1828 1.51 mrg uvm_vnp_setsize(vp, np->n_size); 1829 1.174 yamt genfs_node_unlock(vp); 1830 1.12 mycroft } else 1831 1.12 mycroft np->n_size = vap->va_size; 1832 1.12 mycroft } 1833 1.183 christos memcpy((void *)vaper, (void *)vap, sizeof(struct vattr)); 1834 1.12 mycroft if (np->n_flag & NCHG) { 1835 1.25 fvdl if (np->n_flag & NACC) 1836 1.25 fvdl vaper->va_atime = np->n_atim; 1837 1.25 fvdl if (np->n_flag & NUPD) 1838 1.25 fvdl vaper->va_mtime = np->n_mtim; 1839 1.1 cgd } 1840 1.12 mycroft return (0); 1841 1.105 yamt } 1842 1.105 yamt 1843 1.105 yamt void 1844 1.105 yamt nfs_delayedtruncate(vp) 1845 1.105 yamt struct vnode *vp; 1846 1.105 yamt { 1847 1.105 yamt struct nfsnode *np = VTONFS(vp); 1848 1.105 yamt 1849 1.105 yamt if (np->n_flag & NTRUNCDELAYED) { 1850 1.105 yamt np->n_flag &= ~NTRUNCDELAYED; 1851 1.174 yamt genfs_node_wrlock(vp); 1852 1.140 yamt simple_lock(&vp->v_interlock); 1853 1.140 yamt (void)VOP_PUTPAGES(vp, 0, 1854 1.140 yamt 0, PGO_SYNCIO | PGO_CLEANIT | PGO_FREE | PGO_ALLPAGES); 1855 1.105 yamt uvm_vnp_setsize(vp, np->n_size); 1856 1.174 yamt genfs_node_unlock(vp); 1857 1.105 yamt } 1858 1.1 cgd } 1859 1.48 fvdl 1860 1.141 yamt #define NFS_WCCKLUDGE_TIMEOUT (24 * 60 * 60) /* 1 day */ 1861 1.141 yamt #define NFS_WCCKLUDGE(nmp, now) \ 1862 1.141 yamt (((nmp)->nm_iflag & NFSMNT_WCCKLUDGE) && \ 1863 1.141 yamt ((now) - (nmp)->nm_wcckludgetime - NFS_WCCKLUDGE_TIMEOUT) < 0) 1864 1.141 yamt 1865 1.141 yamt /* 1866 1.141 yamt * nfs_check_wccdata: check inaccurate wcc_data 1867 1.141 yamt * 1868 1.141 yamt * => return non-zero if we shouldn't trust the wcc_data. 1869 1.141 yamt * => NFS_WCCKLUDGE_TIMEOUT is for the case that the server is "fixed". 1870 1.141 yamt */ 1871 1.141 yamt 1872 1.141 yamt int 1873 1.177 yamt nfs_check_wccdata(struct nfsnode *np, const struct timespec *ctime, 1874 1.181 thorpej struct timespec *mtime, bool docheck) 1875 1.141 yamt { 1876 1.141 yamt int error = 0; 1877 1.141 yamt 1878 1.141 yamt #if !defined(NFS_V2_ONLY) 1879 1.141 yamt 1880 1.141 yamt if (docheck) { 1881 1.141 yamt struct vnode *vp = NFSTOV(np); 1882 1.141 yamt struct nfsmount *nmp; 1883 1.165 kardel long now = time_second; 1884 1.184 yamt const struct timespec *omtime = &np->n_vattr->va_mtime; 1885 1.184 yamt const struct timespec *octime = &np->n_vattr->va_ctime; 1886 1.141 yamt #if defined(DEBUG) 1887 1.141 yamt const char *reason = NULL; /* XXX: gcc */ 1888 1.141 yamt #endif 1889 1.141 yamt 1890 1.184 yamt if (timespeccmp(omtime, mtime, <=)) { 1891 1.141 yamt #if defined(DEBUG) 1892 1.141 yamt reason = "mtime"; 1893 1.141 yamt #endif 1894 1.141 yamt error = EINVAL; 1895 1.141 yamt } 1896 1.141 yamt 1897 1.184 yamt if (vp->v_type == VDIR && timespeccmp(octime, ctime, <=)) { 1898 1.141 yamt #if defined(DEBUG) 1899 1.141 yamt reason = "ctime"; 1900 1.141 yamt #endif 1901 1.141 yamt error = EINVAL; 1902 1.141 yamt } 1903 1.141 yamt 1904 1.141 yamt nmp = VFSTONFS(vp->v_mount); 1905 1.141 yamt if (error) { 1906 1.143 yamt 1907 1.143 yamt /* 1908 1.143 yamt * despite of the fact that we've updated the file, 1909 1.143 yamt * timestamps of the file were not updated as we 1910 1.143 yamt * expected. 1911 1.143 yamt * it means that the server has incompatible 1912 1.143 yamt * semantics of timestamps or (more likely) 1913 1.143 yamt * the server time is not precise enough to 1914 1.143 yamt * track each modifications. 1915 1.143 yamt * in that case, we disable wcc processing. 1916 1.143 yamt * 1917 1.143 yamt * yes, strictly speaking, we should disable all 1918 1.143 yamt * caching. it's a compromise. 1919 1.143 yamt */ 1920 1.143 yamt 1921 1.186 yamt mutex_enter(&nmp->nm_lock); 1922 1.141 yamt #if defined(DEBUG) 1923 1.141 yamt if (!NFS_WCCKLUDGE(nmp, now)) { 1924 1.141 yamt printf("%s: inaccurate wcc data (%s) detected," 1925 1.184 yamt " disabling wcc" 1926 1.184 yamt " (ctime %u.%09u %u.%09u," 1927 1.184 yamt " mtime %u.%09u %u.%09u)\n", 1928 1.141 yamt vp->v_mount->mnt_stat.f_mntfromname, 1929 1.184 yamt reason, 1930 1.184 yamt (unsigned int)octime->tv_sec, 1931 1.184 yamt (unsigned int)octime->tv_nsec, 1932 1.184 yamt (unsigned int)ctime->tv_sec, 1933 1.184 yamt (unsigned int)ctime->tv_nsec, 1934 1.184 yamt (unsigned int)omtime->tv_sec, 1935 1.184 yamt (unsigned int)omtime->tv_nsec, 1936 1.184 yamt (unsigned int)mtime->tv_sec, 1937 1.184 yamt (unsigned int)mtime->tv_nsec); 1938 1.141 yamt } 1939 1.141 yamt #endif 1940 1.141 yamt nmp->nm_iflag |= NFSMNT_WCCKLUDGE; 1941 1.141 yamt nmp->nm_wcckludgetime = now; 1942 1.186 yamt mutex_exit(&nmp->nm_lock); 1943 1.141 yamt } else if (NFS_WCCKLUDGE(nmp, now)) { 1944 1.141 yamt error = EPERM; /* XXX */ 1945 1.141 yamt } else if (nmp->nm_iflag & NFSMNT_WCCKLUDGE) { 1946 1.186 yamt mutex_enter(&nmp->nm_lock); 1947 1.141 yamt if (nmp->nm_iflag & NFSMNT_WCCKLUDGE) { 1948 1.141 yamt #if defined(DEBUG) 1949 1.141 yamt printf("%s: re-enabling wcc\n", 1950 1.141 yamt vp->v_mount->mnt_stat.f_mntfromname); 1951 1.141 yamt #endif 1952 1.141 yamt nmp->nm_iflag &= ~NFSMNT_WCCKLUDGE; 1953 1.141 yamt } 1954 1.186 yamt mutex_exit(&nmp->nm_lock); 1955 1.141 yamt } 1956 1.141 yamt } 1957 1.141 yamt 1958 1.141 yamt #endif /* !defined(NFS_V2_ONLY) */ 1959 1.141 yamt 1960 1.141 yamt return error; 1961 1.141 yamt } 1962 1.141 yamt 1963 1.48 fvdl /* 1964 1.48 fvdl * Heuristic to see if the server XDR encodes directory cookies or not. 1965 1.48 fvdl * it is not supposed to, but a lot of servers may do this. Also, since 1966 1.48 fvdl * most/all servers will implement V2 as well, it is expected that they 1967 1.48 fvdl * may return just 32 bits worth of cookie information, so we need to 1968 1.48 fvdl * find out in which 32 bits this information is available. We do this 1969 1.48 fvdl * to avoid trouble with emulated binaries that can't handle 64 bit 1970 1.48 fvdl * directory offsets. 1971 1.48 fvdl */ 1972 1.48 fvdl 1973 1.48 fvdl void 1974 1.156 christos nfs_cookieheuristic(vp, flagp, l, cred) 1975 1.48 fvdl struct vnode *vp; 1976 1.48 fvdl int *flagp; 1977 1.156 christos struct lwp *l; 1978 1.162 elad kauth_cred_t cred; 1979 1.48 fvdl { 1980 1.48 fvdl struct uio auio; 1981 1.48 fvdl struct iovec aiov; 1982 1.183 christos char *tbuf, *cp; 1983 1.48 fvdl struct dirent *dp; 1984 1.57 fvdl off_t *cookies = NULL, *cop; 1985 1.48 fvdl int error, eof, nc, len; 1986 1.48 fvdl 1987 1.183 christos MALLOC(tbuf, void *, NFS_DIRFRAGSIZ, M_TEMP, M_WAITOK); 1988 1.48 fvdl 1989 1.149 christos aiov.iov_base = tbuf; 1990 1.48 fvdl aiov.iov_len = NFS_DIRFRAGSIZ; 1991 1.48 fvdl auio.uio_iov = &aiov; 1992 1.48 fvdl auio.uio_iovcnt = 1; 1993 1.48 fvdl auio.uio_rw = UIO_READ; 1994 1.48 fvdl auio.uio_resid = NFS_DIRFRAGSIZ; 1995 1.48 fvdl auio.uio_offset = 0; 1996 1.158 yamt UIO_SETUP_SYSSPACE(&auio); 1997 1.48 fvdl 1998 1.56 fvdl error = VOP_READDIR(vp, &auio, cred, &eof, &cookies, &nc); 1999 1.48 fvdl 2000 1.48 fvdl len = NFS_DIRFRAGSIZ - auio.uio_resid; 2001 1.48 fvdl if (error || len == 0) { 2002 1.149 christos FREE(tbuf, M_TEMP); 2003 1.57 fvdl if (cookies) 2004 1.80 thorpej free(cookies, M_TEMP); 2005 1.48 fvdl return; 2006 1.48 fvdl } 2007 1.48 fvdl 2008 1.48 fvdl /* 2009 1.48 fvdl * Find the first valid entry and look at its offset cookie. 2010 1.48 fvdl */ 2011 1.48 fvdl 2012 1.149 christos cp = tbuf; 2013 1.48 fvdl for (cop = cookies; len > 0; len -= dp->d_reclen) { 2014 1.48 fvdl dp = (struct dirent *)cp; 2015 1.48 fvdl if (dp->d_fileno != 0 && len >= dp->d_reclen) { 2016 1.48 fvdl if ((*cop >> 32) != 0 && (*cop & 0xffffffffLL) == 0) { 2017 1.48 fvdl *flagp |= NFSMNT_SWAPCOOKIE; 2018 1.49 fvdl nfs_invaldircache(vp, 0); 2019 1.156 christos nfs_vinvalbuf(vp, 0, cred, l, 1); 2020 1.48 fvdl } 2021 1.48 fvdl break; 2022 1.48 fvdl } 2023 1.48 fvdl cop++; 2024 1.48 fvdl cp += dp->d_reclen; 2025 1.48 fvdl } 2026 1.48 fvdl 2027 1.149 christos FREE(tbuf, M_TEMP); 2028 1.80 thorpej free(cookies, M_TEMP); 2029 1.48 fvdl } 2030 1.38 thorpej #endif /* NFS */ 2031 1.1 cgd 2032 1.153 jmmv #ifdef NFSSERVER 2033 1.1 cgd /* 2034 1.43 fvdl * Set up nameidata for a lookup() call and do it. 2035 1.43 fvdl * 2036 1.43 fvdl * If pubflag is set, this call is done for a lookup operation on the 2037 1.43 fvdl * public filehandle. In that case we allow crossing mountpoints and 2038 1.43 fvdl * absolute pathnames. However, the caller is expected to check that 2039 1.43 fvdl * the lookup result is within the public fs, and deny access if 2040 1.43 fvdl * it is not. 2041 1.1 cgd */ 2042 1.24 christos int 2043 1.168 yamt nfs_namei(ndp, nsfh, len, slp, nam, mdp, dposp, retdirp, l, kerbflag, pubflag) 2044 1.75 augustss struct nameidata *ndp; 2045 1.168 yamt nfsrvfh_t *nsfh; 2046 1.110 yamt uint32_t len; 2047 1.12 mycroft struct nfssvc_sock *slp; 2048 1.12 mycroft struct mbuf *nam; 2049 1.1 cgd struct mbuf **mdp; 2050 1.183 christos char **dposp; 2051 1.25 fvdl struct vnode **retdirp; 2052 1.156 christos struct lwp *l; 2053 1.43 fvdl int kerbflag, pubflag; 2054 1.1 cgd { 2055 1.75 augustss int i, rem; 2056 1.75 augustss struct mbuf *md; 2057 1.75 augustss char *fromcp, *tocp, *cp; 2058 1.43 fvdl struct iovec aiov; 2059 1.43 fvdl struct uio auio; 2060 1.1 cgd struct vnode *dp; 2061 1.43 fvdl int error, rdonly, linklen; 2062 1.12 mycroft struct componentname *cnp = &ndp->ni_cnd; 2063 1.1 cgd 2064 1.178 chs *retdirp = NULL; 2065 1.81 thorpej 2066 1.81 thorpej if ((len + 1) > MAXPATHLEN) 2067 1.81 thorpej return (ENAMETOOLONG); 2068 1.147 yamt if (len == 0) 2069 1.147 yamt return (EACCES); 2070 1.81 thorpej cnp->cn_pnbuf = PNBUF_GET(); 2071 1.81 thorpej 2072 1.1 cgd /* 2073 1.1 cgd * Copy the name from the mbuf list to ndp->ni_pnbuf 2074 1.1 cgd * and set the various ndp fields appropriately. 2075 1.1 cgd */ 2076 1.1 cgd fromcp = *dposp; 2077 1.12 mycroft tocp = cnp->cn_pnbuf; 2078 1.1 cgd md = *mdp; 2079 1.183 christos rem = mtod(md, char *) + md->m_len - fromcp; 2080 1.1 cgd for (i = 0; i < len; i++) { 2081 1.1 cgd while (rem == 0) { 2082 1.1 cgd md = md->m_next; 2083 1.1 cgd if (md == NULL) { 2084 1.1 cgd error = EBADRPC; 2085 1.1 cgd goto out; 2086 1.1 cgd } 2087 1.183 christos fromcp = mtod(md, void *); 2088 1.1 cgd rem = md->m_len; 2089 1.1 cgd } 2090 1.43 fvdl if (*fromcp == '\0' || (!pubflag && *fromcp == '/')) { 2091 1.25 fvdl error = EACCES; 2092 1.1 cgd goto out; 2093 1.1 cgd } 2094 1.1 cgd *tocp++ = *fromcp++; 2095 1.1 cgd rem--; 2096 1.1 cgd } 2097 1.1 cgd *tocp = '\0'; 2098 1.1 cgd *mdp = md; 2099 1.1 cgd *dposp = fromcp; 2100 1.1 cgd len = nfsm_rndup(len)-len; 2101 1.1 cgd if (len > 0) { 2102 1.1 cgd if (rem >= len) 2103 1.1 cgd *dposp += len; 2104 1.24 christos else if ((error = nfs_adv(mdp, dposp, len, rem)) != 0) 2105 1.1 cgd goto out; 2106 1.1 cgd } 2107 1.43 fvdl 2108 1.1 cgd /* 2109 1.1 cgd * Extract and set starting directory. 2110 1.1 cgd */ 2111 1.182 thorpej error = nfsrv_fhtovp(nsfh, false, &dp, ndp->ni_cnd.cn_cred, slp, 2112 1.124 thorpej nam, &rdonly, kerbflag, pubflag); 2113 1.24 christos if (error) 2114 1.1 cgd goto out; 2115 1.1 cgd if (dp->v_type != VDIR) { 2116 1.1 cgd vrele(dp); 2117 1.1 cgd error = ENOTDIR; 2118 1.1 cgd goto out; 2119 1.1 cgd } 2120 1.43 fvdl 2121 1.43 fvdl if (rdonly) 2122 1.43 fvdl cnp->cn_flags |= RDONLY; 2123 1.43 fvdl 2124 1.43 fvdl *retdirp = dp; 2125 1.43 fvdl 2126 1.43 fvdl if (pubflag) { 2127 1.43 fvdl /* 2128 1.43 fvdl * Oh joy. For WebNFS, handle those pesky '%' escapes, 2129 1.43 fvdl * and the 'native path' indicator. 2130 1.43 fvdl */ 2131 1.81 thorpej cp = PNBUF_GET(); 2132 1.43 fvdl fromcp = cnp->cn_pnbuf; 2133 1.43 fvdl tocp = cp; 2134 1.43 fvdl if ((unsigned char)*fromcp >= WEBNFS_SPECCHAR_START) { 2135 1.43 fvdl switch ((unsigned char)*fromcp) { 2136 1.43 fvdl case WEBNFS_NATIVE_CHAR: 2137 1.43 fvdl /* 2138 1.43 fvdl * 'Native' path for us is the same 2139 1.43 fvdl * as a path according to the NFS spec, 2140 1.43 fvdl * just skip the escape char. 2141 1.43 fvdl */ 2142 1.43 fvdl fromcp++; 2143 1.43 fvdl break; 2144 1.43 fvdl /* 2145 1.43 fvdl * More may be added in the future, range 0x80-0xff 2146 1.43 fvdl */ 2147 1.43 fvdl default: 2148 1.43 fvdl error = EIO; 2149 1.178 chs vrele(dp); 2150 1.104 enami PNBUF_PUT(cp); 2151 1.43 fvdl goto out; 2152 1.43 fvdl } 2153 1.43 fvdl } 2154 1.43 fvdl /* 2155 1.43 fvdl * Translate the '%' escapes, URL-style. 2156 1.43 fvdl */ 2157 1.43 fvdl while (*fromcp != '\0') { 2158 1.43 fvdl if (*fromcp == WEBNFS_ESC_CHAR) { 2159 1.43 fvdl if (fromcp[1] != '\0' && fromcp[2] != '\0') { 2160 1.43 fvdl fromcp++; 2161 1.43 fvdl *tocp++ = HEXSTRTOI(fromcp); 2162 1.43 fvdl fromcp += 2; 2163 1.43 fvdl continue; 2164 1.43 fvdl } else { 2165 1.43 fvdl error = ENOENT; 2166 1.178 chs vrele(dp); 2167 1.104 enami PNBUF_PUT(cp); 2168 1.43 fvdl goto out; 2169 1.43 fvdl } 2170 1.43 fvdl } else 2171 1.43 fvdl *tocp++ = *fromcp++; 2172 1.43 fvdl } 2173 1.43 fvdl *tocp = '\0'; 2174 1.81 thorpej PNBUF_PUT(cnp->cn_pnbuf); 2175 1.43 fvdl cnp->cn_pnbuf = cp; 2176 1.43 fvdl } 2177 1.43 fvdl 2178 1.43 fvdl ndp->ni_pathlen = (tocp - cnp->cn_pnbuf) + 1; 2179 1.43 fvdl ndp->ni_segflg = UIO_SYSSPACE; 2180 1.98 fvdl ndp->ni_rootdir = rootvnode; 2181 1.185 dsl ndp->ni_erootdir = NULL; 2182 1.43 fvdl 2183 1.43 fvdl if (pubflag) { 2184 1.43 fvdl ndp->ni_loopcnt = 0; 2185 1.43 fvdl if (cnp->cn_pnbuf[0] == '/') 2186 1.43 fvdl dp = rootvnode; 2187 1.43 fvdl } else { 2188 1.43 fvdl cnp->cn_flags |= NOCROSSMOUNT; 2189 1.43 fvdl } 2190 1.43 fvdl 2191 1.156 christos cnp->cn_lwp = l; 2192 1.25 fvdl VREF(dp); 2193 1.178 chs vn_lock(dp, LK_EXCLUSIVE | LK_RETRY); 2194 1.43 fvdl 2195 1.43 fvdl for (;;) { 2196 1.43 fvdl cnp->cn_nameptr = cnp->cn_pnbuf; 2197 1.1 cgd ndp->ni_startdir = dp; 2198 1.178 chs 2199 1.1 cgd /* 2200 1.1 cgd * And call lookup() to do the real work 2201 1.1 cgd */ 2202 1.25 fvdl error = lookup(ndp); 2203 1.91 fvdl if (error) { 2204 1.178 chs if (ndp->ni_dvp) { 2205 1.178 chs vput(ndp->ni_dvp); 2206 1.178 chs } 2207 1.91 fvdl PNBUF_PUT(cnp->cn_pnbuf); 2208 1.91 fvdl return (error); 2209 1.91 fvdl } 2210 1.178 chs 2211 1.1 cgd /* 2212 1.1 cgd * Check for encountering a symbolic link 2213 1.1 cgd */ 2214 1.43 fvdl if ((cnp->cn_flags & ISSYMLINK) == 0) { 2215 1.178 chs if ((cnp->cn_flags & LOCKPARENT) == 0 && ndp->ni_dvp) { 2216 1.178 chs if (ndp->ni_dvp == ndp->ni_vp) { 2217 1.178 chs vrele(ndp->ni_dvp); 2218 1.178 chs } else { 2219 1.178 chs vput(ndp->ni_dvp); 2220 1.178 chs } 2221 1.178 chs } 2222 1.91 fvdl if (cnp->cn_flags & (SAVENAME | SAVESTART)) 2223 1.43 fvdl cnp->cn_flags |= HASBUF; 2224 1.91 fvdl else 2225 1.91 fvdl PNBUF_PUT(cnp->cn_pnbuf); 2226 1.91 fvdl return (0); 2227 1.43 fvdl } else { 2228 1.43 fvdl if (!pubflag) { 2229 1.43 fvdl error = EINVAL; 2230 1.43 fvdl break; 2231 1.43 fvdl } 2232 1.43 fvdl if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 2233 1.43 fvdl error = ELOOP; 2234 1.43 fvdl break; 2235 1.43 fvdl } 2236 1.91 fvdl if (ndp->ni_vp->v_mount->mnt_flag & MNT_SYMPERM) { 2237 1.91 fvdl error = VOP_ACCESS(ndp->ni_vp, VEXEC, cnp->cn_cred, 2238 1.156 christos cnp->cn_lwp); 2239 1.91 fvdl if (error != 0) 2240 1.91 fvdl break; 2241 1.91 fvdl } 2242 1.43 fvdl if (ndp->ni_pathlen > 1) 2243 1.81 thorpej cp = PNBUF_GET(); 2244 1.1 cgd else 2245 1.43 fvdl cp = cnp->cn_pnbuf; 2246 1.43 fvdl aiov.iov_base = cp; 2247 1.43 fvdl aiov.iov_len = MAXPATHLEN; 2248 1.43 fvdl auio.uio_iov = &aiov; 2249 1.43 fvdl auio.uio_iovcnt = 1; 2250 1.43 fvdl auio.uio_offset = 0; 2251 1.43 fvdl auio.uio_rw = UIO_READ; 2252 1.43 fvdl auio.uio_resid = MAXPATHLEN; 2253 1.158 yamt UIO_SETUP_SYSSPACE(&auio); 2254 1.43 fvdl error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 2255 1.43 fvdl if (error) { 2256 1.178 chs badlink: 2257 1.43 fvdl if (ndp->ni_pathlen > 1) 2258 1.81 thorpej PNBUF_PUT(cp); 2259 1.43 fvdl break; 2260 1.43 fvdl } 2261 1.43 fvdl linklen = MAXPATHLEN - auio.uio_resid; 2262 1.43 fvdl if (linklen == 0) { 2263 1.43 fvdl error = ENOENT; 2264 1.43 fvdl goto badlink; 2265 1.43 fvdl } 2266 1.43 fvdl if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 2267 1.43 fvdl error = ENAMETOOLONG; 2268 1.43 fvdl goto badlink; 2269 1.43 fvdl } 2270 1.43 fvdl if (ndp->ni_pathlen > 1) { 2271 1.63 perry memcpy(cp + linklen, ndp->ni_next, ndp->ni_pathlen); 2272 1.81 thorpej PNBUF_PUT(cnp->cn_pnbuf); 2273 1.43 fvdl cnp->cn_pnbuf = cp; 2274 1.43 fvdl } else 2275 1.43 fvdl cnp->cn_pnbuf[linklen] = '\0'; 2276 1.43 fvdl ndp->ni_pathlen += linklen; 2277 1.1 cgd vput(ndp->ni_vp); 2278 1.43 fvdl dp = ndp->ni_dvp; 2279 1.178 chs 2280 1.43 fvdl /* 2281 1.43 fvdl * Check if root directory should replace current directory. 2282 1.43 fvdl */ 2283 1.43 fvdl if (cnp->cn_pnbuf[0] == '/') { 2284 1.178 chs vput(dp); 2285 1.43 fvdl dp = ndp->ni_rootdir; 2286 1.43 fvdl VREF(dp); 2287 1.178 chs vn_lock(dp, LK_EXCLUSIVE | LK_RETRY); 2288 1.43 fvdl } 2289 1.1 cgd } 2290 1.43 fvdl } 2291 1.178 chs vput(ndp->ni_dvp); 2292 1.91 fvdl vput(ndp->ni_vp); 2293 1.91 fvdl ndp->ni_vp = NULL; 2294 1.1 cgd out: 2295 1.81 thorpej PNBUF_PUT(cnp->cn_pnbuf); 2296 1.1 cgd return (error); 2297 1.1 cgd } 2298 1.153 jmmv #endif /* NFSSERVER */ 2299 1.1 cgd 2300 1.1 cgd /* 2301 1.118 yamt * A fiddled version of m_adj() that ensures null fill to a 32-bit 2302 1.1 cgd * boundary and only trims off the back end 2303 1.122 yamt * 2304 1.122 yamt * 1. trim off 'len' bytes as m_adj(mp, -len). 2305 1.122 yamt * 2. add zero-padding 'nul' bytes at the end of the mbuf chain. 2306 1.1 cgd */ 2307 1.12 mycroft void 2308 1.122 yamt nfs_zeropad(mp, len, nul) 2309 1.1 cgd struct mbuf *mp; 2310 1.75 augustss int len; 2311 1.1 cgd int nul; 2312 1.1 cgd { 2313 1.75 augustss struct mbuf *m; 2314 1.130 yamt int count; 2315 1.1 cgd 2316 1.1 cgd /* 2317 1.1 cgd * Trim from tail. Scan the mbuf chain, 2318 1.1 cgd * calculating its length and finding the last mbuf. 2319 1.1 cgd * If the adjustment only affects this mbuf, then just 2320 1.1 cgd * adjust and return. Otherwise, rescan and truncate 2321 1.1 cgd * after the remaining size. 2322 1.1 cgd */ 2323 1.1 cgd count = 0; 2324 1.1 cgd m = mp; 2325 1.1 cgd for (;;) { 2326 1.1 cgd count += m->m_len; 2327 1.122 yamt if (m->m_next == NULL) 2328 1.1 cgd break; 2329 1.1 cgd m = m->m_next; 2330 1.1 cgd } 2331 1.122 yamt 2332 1.122 yamt KDASSERT(count >= len); 2333 1.122 yamt 2334 1.122 yamt if (m->m_len >= len) { 2335 1.1 cgd m->m_len -= len; 2336 1.122 yamt } else { 2337 1.122 yamt count -= len; 2338 1.122 yamt /* 2339 1.122 yamt * Correct length for chain is "count". 2340 1.122 yamt * Find the mbuf with last data, adjust its length, 2341 1.122 yamt * and toss data from remaining mbufs on chain. 2342 1.122 yamt */ 2343 1.122 yamt for (m = mp; m; m = m->m_next) { 2344 1.122 yamt if (m->m_len >= count) { 2345 1.122 yamt m->m_len = count; 2346 1.122 yamt break; 2347 1.118 yamt } 2348 1.122 yamt count -= m->m_len; 2349 1.1 cgd } 2350 1.159 christos KASSERT(m && m->m_next); 2351 1.122 yamt m_freem(m->m_next); 2352 1.122 yamt m->m_next = NULL; 2353 1.1 cgd } 2354 1.122 yamt 2355 1.130 yamt KDASSERT(m->m_next == NULL); 2356 1.130 yamt 2357 1.122 yamt /* 2358 1.122 yamt * zero-padding. 2359 1.122 yamt */ 2360 1.122 yamt if (nul > 0) { 2361 1.130 yamt char *cp; 2362 1.130 yamt int i; 2363 1.130 yamt 2364 1.122 yamt if (M_ROMAP(m) || M_TRAILINGSPACE(m) < nul) { 2365 1.122 yamt struct mbuf *n; 2366 1.122 yamt 2367 1.122 yamt KDASSERT(MLEN >= nul); 2368 1.122 yamt n = m_get(M_WAIT, MT_DATA); 2369 1.122 yamt MCLAIM(n, &nfs_mowner); 2370 1.122 yamt n->m_len = nul; 2371 1.130 yamt n->m_next = NULL; 2372 1.122 yamt m->m_next = n; 2373 1.183 christos cp = mtod(n, void *); 2374 1.122 yamt } else { 2375 1.183 christos cp = mtod(m, char *) + m->m_len; 2376 1.122 yamt m->m_len += nul; 2377 1.1 cgd } 2378 1.122 yamt for (i = 0; i < nul; i++) 2379 1.122 yamt *cp++ = '\0'; 2380 1.1 cgd } 2381 1.122 yamt return; 2382 1.1 cgd } 2383 1.1 cgd 2384 1.1 cgd /* 2385 1.25 fvdl * Make these functions instead of macros, so that the kernel text size 2386 1.25 fvdl * doesn't get too big... 2387 1.25 fvdl */ 2388 1.25 fvdl void 2389 1.25 fvdl nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 2390 1.25 fvdl struct nfsrv_descript *nfsd; 2391 1.25 fvdl int before_ret; 2392 1.75 augustss struct vattr *before_vap; 2393 1.25 fvdl int after_ret; 2394 1.25 fvdl struct vattr *after_vap; 2395 1.25 fvdl struct mbuf **mbp; 2396 1.25 fvdl char **bposp; 2397 1.25 fvdl { 2398 1.109 matt struct mbuf *mb = *mbp; 2399 1.75 augustss char *bpos = *bposp; 2400 1.75 augustss u_int32_t *tl; 2401 1.25 fvdl 2402 1.25 fvdl if (before_ret) { 2403 1.25 fvdl nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 2404 1.25 fvdl *tl = nfs_false; 2405 1.25 fvdl } else { 2406 1.25 fvdl nfsm_build(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 2407 1.25 fvdl *tl++ = nfs_true; 2408 1.66 fair txdr_hyper(before_vap->va_size, tl); 2409 1.25 fvdl tl += 2; 2410 1.25 fvdl txdr_nfsv3time(&(before_vap->va_mtime), tl); 2411 1.25 fvdl tl += 2; 2412 1.25 fvdl txdr_nfsv3time(&(before_vap->va_ctime), tl); 2413 1.25 fvdl } 2414 1.25 fvdl *bposp = bpos; 2415 1.25 fvdl *mbp = mb; 2416 1.25 fvdl nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 2417 1.25 fvdl } 2418 1.25 fvdl 2419 1.25 fvdl void 2420 1.25 fvdl nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 2421 1.25 fvdl struct nfsrv_descript *nfsd; 2422 1.25 fvdl int after_ret; 2423 1.25 fvdl struct vattr *after_vap; 2424 1.25 fvdl struct mbuf **mbp; 2425 1.25 fvdl char **bposp; 2426 1.25 fvdl { 2427 1.109 matt struct mbuf *mb = *mbp; 2428 1.75 augustss char *bpos = *bposp; 2429 1.75 augustss u_int32_t *tl; 2430 1.75 augustss struct nfs_fattr *fp; 2431 1.25 fvdl 2432 1.25 fvdl if (after_ret) { 2433 1.25 fvdl nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 2434 1.25 fvdl *tl = nfs_false; 2435 1.25 fvdl } else { 2436 1.25 fvdl nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_V3FATTR); 2437 1.25 fvdl *tl++ = nfs_true; 2438 1.25 fvdl fp = (struct nfs_fattr *)tl; 2439 1.25 fvdl nfsm_srvfattr(nfsd, after_vap, fp); 2440 1.25 fvdl } 2441 1.25 fvdl *mbp = mb; 2442 1.25 fvdl *bposp = bpos; 2443 1.25 fvdl } 2444 1.25 fvdl 2445 1.25 fvdl void 2446 1.25 fvdl nfsm_srvfattr(nfsd, vap, fp) 2447 1.75 augustss struct nfsrv_descript *nfsd; 2448 1.75 augustss struct vattr *vap; 2449 1.75 augustss struct nfs_fattr *fp; 2450 1.25 fvdl { 2451 1.25 fvdl 2452 1.25 fvdl fp->fa_nlink = txdr_unsigned(vap->va_nlink); 2453 1.25 fvdl fp->fa_uid = txdr_unsigned(vap->va_uid); 2454 1.25 fvdl fp->fa_gid = txdr_unsigned(vap->va_gid); 2455 1.25 fvdl if (nfsd->nd_flag & ND_NFSV3) { 2456 1.25 fvdl fp->fa_type = vtonfsv3_type(vap->va_type); 2457 1.25 fvdl fp->fa_mode = vtonfsv3_mode(vap->va_mode); 2458 1.66 fair txdr_hyper(vap->va_size, &fp->fa3_size); 2459 1.66 fair txdr_hyper(vap->va_bytes, &fp->fa3_used); 2460 1.25 fvdl fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 2461 1.25 fvdl fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 2462 1.25 fvdl fp->fa3_fsid.nfsuquad[0] = 0; 2463 1.25 fvdl fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 2464 1.151 yamt txdr_hyper(vap->va_fileid, &fp->fa3_fileid); 2465 1.25 fvdl txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 2466 1.25 fvdl txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 2467 1.25 fvdl txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 2468 1.25 fvdl } else { 2469 1.25 fvdl fp->fa_type = vtonfsv2_type(vap->va_type); 2470 1.25 fvdl fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 2471 1.25 fvdl fp->fa2_size = txdr_unsigned(vap->va_size); 2472 1.25 fvdl fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 2473 1.25 fvdl if (vap->va_type == VFIFO) 2474 1.25 fvdl fp->fa2_rdev = 0xffffffff; 2475 1.25 fvdl else 2476 1.25 fvdl fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 2477 1.25 fvdl fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 2478 1.25 fvdl fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 2479 1.25 fvdl fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 2480 1.25 fvdl txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 2481 1.25 fvdl txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 2482 1.25 fvdl txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 2483 1.25 fvdl } 2484 1.25 fvdl } 2485 1.25 fvdl 2486 1.153 jmmv #ifdef NFSSERVER 2487 1.25 fvdl /* 2488 1.1 cgd * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 2489 1.1 cgd * - look up fsid in mount list (if not found ret error) 2490 1.12 mycroft * - get vp and export rights by calling VFS_FHTOVP() 2491 1.12 mycroft * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2492 1.1 cgd * - if not lockflag unlock it with VOP_UNLOCK() 2493 1.1 cgd */ 2494 1.24 christos int 2495 1.177 yamt nfsrv_fhtovp(nfsrvfh_t *nsfh, int lockflag, struct vnode **vpp, 2496 1.177 yamt kauth_cred_t cred, struct nfssvc_sock *slp, struct mbuf *nam, int *rdonlyp, 2497 1.177 yamt int kerbflag, int pubflag) 2498 1.1 cgd { 2499 1.75 augustss struct mount *mp; 2500 1.162 elad kauth_cred_t credanon; 2501 1.12 mycroft int error, exflags; 2502 1.40 fvdl struct sockaddr_in *saddr; 2503 1.168 yamt fhandle_t *fhp; 2504 1.1 cgd 2505 1.168 yamt fhp = NFSRVFH_FHANDLE(nsfh); 2506 1.12 mycroft *vpp = (struct vnode *)0; 2507 1.43 fvdl 2508 1.168 yamt if (nfs_ispublicfh(nsfh)) { 2509 1.43 fvdl if (!pubflag || !nfs_pub.np_valid) 2510 1.43 fvdl return (ESTALE); 2511 1.166 martin fhp = nfs_pub.np_handle; 2512 1.43 fvdl } 2513 1.43 fvdl 2514 1.154 yamt error = netexport_check(&fhp->fh_fsid, nam, &mp, &exflags, &credanon); 2515 1.154 yamt if (error) { 2516 1.154 yamt return error; 2517 1.154 yamt } 2518 1.154 yamt 2519 1.124 thorpej error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp); 2520 1.24 christos if (error) 2521 1.12 mycroft return (error); 2522 1.40 fvdl 2523 1.43 fvdl if (!(exflags & (MNT_EXNORESPORT|MNT_EXPUBLIC))) { 2524 1.40 fvdl saddr = mtod(nam, struct sockaddr_in *); 2525 1.76 fvdl if ((saddr->sin_family == AF_INET) && 2526 1.40 fvdl ntohs(saddr->sin_port) >= IPPORT_RESERVED) { 2527 1.40 fvdl vput(*vpp); 2528 1.40 fvdl return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2529 1.40 fvdl } 2530 1.76 fvdl #ifdef INET6 2531 1.76 fvdl if ((saddr->sin_family == AF_INET6) && 2532 1.76 fvdl ntohs(saddr->sin_port) >= IPV6PORT_RESERVED) { 2533 1.76 fvdl vput(*vpp); 2534 1.76 fvdl return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2535 1.76 fvdl } 2536 1.76 fvdl #endif 2537 1.40 fvdl } 2538 1.12 mycroft /* 2539 1.12 mycroft * Check/setup credentials. 2540 1.12 mycroft */ 2541 1.12 mycroft if (exflags & MNT_EXKERB) { 2542 1.25 fvdl if (!kerbflag) { 2543 1.12 mycroft vput(*vpp); 2544 1.25 fvdl return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2545 1.12 mycroft } 2546 1.25 fvdl } else if (kerbflag) { 2547 1.25 fvdl vput(*vpp); 2548 1.25 fvdl return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2549 1.162 elad } else if (kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER, 2550 1.162 elad NULL) == 0 || (exflags & MNT_EXPORTANON)) { 2551 1.162 elad kauth_cred_clone(credanon, cred); 2552 1.12 mycroft } 2553 1.12 mycroft if (exflags & MNT_EXRDONLY) 2554 1.12 mycroft *rdonlyp = 1; 2555 1.12 mycroft else 2556 1.12 mycroft *rdonlyp = 0; 2557 1.1 cgd if (!lockflag) 2558 1.56 fvdl VOP_UNLOCK(*vpp, 0); 2559 1.1 cgd return (0); 2560 1.43 fvdl } 2561 1.43 fvdl 2562 1.43 fvdl /* 2563 1.43 fvdl * WebNFS: check if a filehandle is a public filehandle. For v3, this 2564 1.168 yamt * means a length of 0, for v2 it means all zeroes. 2565 1.43 fvdl */ 2566 1.43 fvdl int 2567 1.168 yamt nfs_ispublicfh(const nfsrvfh_t *nsfh) 2568 1.43 fvdl { 2569 1.170 yamt const char *cp = (const void *)(NFSRVFH_DATA(nsfh)); 2570 1.43 fvdl int i; 2571 1.43 fvdl 2572 1.168 yamt if (NFSRVFH_SIZE(nsfh) == 0) { 2573 1.182 thorpej return true; 2574 1.168 yamt } 2575 1.168 yamt if (NFSRVFH_SIZE(nsfh) != NFSX_V2FH) { 2576 1.182 thorpej return false; 2577 1.168 yamt } 2578 1.168 yamt for (i = 0; i < NFSX_V2FH; i++) 2579 1.43 fvdl if (*cp++ != 0) 2580 1.182 thorpej return false; 2581 1.182 thorpej return true; 2582 1.1 cgd } 2583 1.153 jmmv #endif /* NFSSERVER */ 2584 1.1 cgd 2585 1.1 cgd /* 2586 1.182 thorpej * This function compares two net addresses by family and returns true 2587 1.12 mycroft * if they are the same host. 2588 1.182 thorpej * If there is any doubt, return false. 2589 1.12 mycroft * The AF_INET family is handled as a special case so that address mbufs 2590 1.12 mycroft * don't need to be saved to store "struct in_addr", which is only 4 bytes. 2591 1.1 cgd */ 2592 1.24 christos int 2593 1.12 mycroft netaddr_match(family, haddr, nam) 2594 1.12 mycroft int family; 2595 1.12 mycroft union nethostaddr *haddr; 2596 1.12 mycroft struct mbuf *nam; 2597 1.1 cgd { 2598 1.75 augustss struct sockaddr_in *inetaddr; 2599 1.1 cgd 2600 1.12 mycroft switch (family) { 2601 1.12 mycroft case AF_INET: 2602 1.12 mycroft inetaddr = mtod(nam, struct sockaddr_in *); 2603 1.12 mycroft if (inetaddr->sin_family == AF_INET && 2604 1.12 mycroft inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 2605 1.12 mycroft return (1); 2606 1.12 mycroft break; 2607 1.76 fvdl #ifdef INET6 2608 1.76 fvdl case AF_INET6: 2609 1.76 fvdl { 2610 1.76 fvdl struct sockaddr_in6 *sin6_1, *sin6_2; 2611 1.76 fvdl 2612 1.76 fvdl sin6_1 = mtod(nam, struct sockaddr_in6 *); 2613 1.76 fvdl sin6_2 = mtod(haddr->had_nam, struct sockaddr_in6 *); 2614 1.76 fvdl if (sin6_1->sin6_family == AF_INET6 && 2615 1.76 fvdl IN6_ARE_ADDR_EQUAL(&sin6_1->sin6_addr, &sin6_2->sin6_addr)) 2616 1.76 fvdl return 1; 2617 1.76 fvdl } 2618 1.76 fvdl #endif 2619 1.12 mycroft #ifdef ISO 2620 1.12 mycroft case AF_ISO: 2621 1.12 mycroft { 2622 1.75 augustss struct sockaddr_iso *isoaddr1, *isoaddr2; 2623 1.12 mycroft 2624 1.12 mycroft isoaddr1 = mtod(nam, struct sockaddr_iso *); 2625 1.12 mycroft isoaddr2 = mtod(haddr->had_nam, struct sockaddr_iso *); 2626 1.12 mycroft if (isoaddr1->siso_family == AF_ISO && 2627 1.12 mycroft isoaddr1->siso_nlen > 0 && 2628 1.12 mycroft isoaddr1->siso_nlen == isoaddr2->siso_nlen && 2629 1.12 mycroft SAME_ISOADDR(isoaddr1, isoaddr2)) 2630 1.12 mycroft return (1); 2631 1.12 mycroft break; 2632 1.12 mycroft } 2633 1.12 mycroft #endif /* ISO */ 2634 1.12 mycroft default: 2635 1.12 mycroft break; 2636 1.12 mycroft }; 2637 1.12 mycroft return (0); 2638 1.25 fvdl } 2639 1.25 fvdl 2640 1.25 fvdl /* 2641 1.25 fvdl * The write verifier has changed (probably due to a server reboot), so all 2642 1.114 yamt * PG_NEEDCOMMIT pages will have to be written again. Since they are marked 2643 1.117 yamt * as dirty or are being written out just now, all this takes is clearing 2644 1.117 yamt * the PG_NEEDCOMMIT flag. Once done the new write verifier can be set for 2645 1.117 yamt * the mount point. 2646 1.25 fvdl */ 2647 1.25 fvdl void 2648 1.25 fvdl nfs_clearcommit(mp) 2649 1.25 fvdl struct mount *mp; 2650 1.25 fvdl { 2651 1.89 chs struct vnode *vp; 2652 1.83 fvdl struct nfsnode *np; 2653 1.89 chs struct vm_page *pg; 2654 1.116 yamt struct nfsmount *nmp = VFSTONFS(mp); 2655 1.116 yamt 2656 1.180 yamt rw_enter(&nmp->nm_writeverflock, RW_WRITER); 2657 1.25 fvdl 2658 1.176 reinoud TAILQ_FOREACH(vp, &mp->mnt_vnodelist, v_mntvnodes) { 2659 1.89 chs KASSERT(vp->v_mount == mp); 2660 1.146 yamt if (vp->v_type != VREG) 2661 1.85 enami continue; 2662 1.83 fvdl np = VTONFS(vp); 2663 1.83 fvdl np->n_pushlo = np->n_pushhi = np->n_pushedlo = 2664 1.83 fvdl np->n_pushedhi = 0; 2665 1.83 fvdl np->n_commitflags &= 2666 1.83 fvdl ~(NFS_COMMIT_PUSH_VALID | NFS_COMMIT_PUSHED_VALID); 2667 1.97 chs simple_lock(&vp->v_uobj.vmobjlock); 2668 1.97 chs TAILQ_FOREACH(pg, &vp->v_uobj.memq, listq) { 2669 1.89 chs pg->flags &= ~PG_NEEDCOMMIT; 2670 1.25 fvdl } 2671 1.97 chs simple_unlock(&vp->v_uobj.vmobjlock); 2672 1.25 fvdl } 2673 1.186 yamt mutex_enter(&nmp->nm_lock); 2674 1.116 yamt nmp->nm_iflag &= ~NFSMNT_STALEWRITEVERF; 2675 1.186 yamt mutex_exit(&nmp->nm_lock); 2676 1.180 yamt rw_exit(&nmp->nm_writeverflock); 2677 1.83 fvdl } 2678 1.83 fvdl 2679 1.83 fvdl void 2680 1.83 fvdl nfs_merge_commit_ranges(vp) 2681 1.83 fvdl struct vnode *vp; 2682 1.83 fvdl { 2683 1.83 fvdl struct nfsnode *np = VTONFS(vp); 2684 1.112 yamt 2685 1.112 yamt KASSERT(np->n_commitflags & NFS_COMMIT_PUSH_VALID); 2686 1.83 fvdl 2687 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) { 2688 1.83 fvdl np->n_pushedlo = np->n_pushlo; 2689 1.83 fvdl np->n_pushedhi = np->n_pushhi; 2690 1.83 fvdl np->n_commitflags |= NFS_COMMIT_PUSHED_VALID; 2691 1.83 fvdl } else { 2692 1.83 fvdl if (np->n_pushlo < np->n_pushedlo) 2693 1.83 fvdl np->n_pushedlo = np->n_pushlo; 2694 1.83 fvdl if (np->n_pushhi > np->n_pushedhi) 2695 1.83 fvdl np->n_pushedhi = np->n_pushhi; 2696 1.83 fvdl } 2697 1.83 fvdl 2698 1.83 fvdl np->n_pushlo = np->n_pushhi = 0; 2699 1.83 fvdl np->n_commitflags &= ~NFS_COMMIT_PUSH_VALID; 2700 1.83 fvdl 2701 1.111 yamt #ifdef NFS_DEBUG_COMMIT 2702 1.83 fvdl printf("merge: committed: %u - %u\n", (unsigned)np->n_pushedlo, 2703 1.83 fvdl (unsigned)np->n_pushedhi); 2704 1.83 fvdl #endif 2705 1.83 fvdl } 2706 1.83 fvdl 2707 1.83 fvdl int 2708 1.89 chs nfs_in_committed_range(vp, off, len) 2709 1.83 fvdl struct vnode *vp; 2710 1.89 chs off_t off, len; 2711 1.83 fvdl { 2712 1.83 fvdl struct nfsnode *np = VTONFS(vp); 2713 1.83 fvdl off_t lo, hi; 2714 1.83 fvdl 2715 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) 2716 1.83 fvdl return 0; 2717 1.89 chs lo = off; 2718 1.89 chs hi = lo + len; 2719 1.83 fvdl 2720 1.83 fvdl return (lo >= np->n_pushedlo && hi <= np->n_pushedhi); 2721 1.83 fvdl } 2722 1.83 fvdl 2723 1.83 fvdl int 2724 1.89 chs nfs_in_tobecommitted_range(vp, off, len) 2725 1.83 fvdl struct vnode *vp; 2726 1.89 chs off_t off, len; 2727 1.83 fvdl { 2728 1.83 fvdl struct nfsnode *np = VTONFS(vp); 2729 1.83 fvdl off_t lo, hi; 2730 1.83 fvdl 2731 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) 2732 1.83 fvdl return 0; 2733 1.89 chs lo = off; 2734 1.89 chs hi = lo + len; 2735 1.83 fvdl 2736 1.83 fvdl return (lo >= np->n_pushlo && hi <= np->n_pushhi); 2737 1.83 fvdl } 2738 1.83 fvdl 2739 1.83 fvdl void 2740 1.89 chs nfs_add_committed_range(vp, off, len) 2741 1.83 fvdl struct vnode *vp; 2742 1.89 chs off_t off, len; 2743 1.83 fvdl { 2744 1.83 fvdl struct nfsnode *np = VTONFS(vp); 2745 1.83 fvdl off_t lo, hi; 2746 1.83 fvdl 2747 1.89 chs lo = off; 2748 1.89 chs hi = lo + len; 2749 1.83 fvdl 2750 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) { 2751 1.83 fvdl np->n_pushedlo = lo; 2752 1.83 fvdl np->n_pushedhi = hi; 2753 1.83 fvdl np->n_commitflags |= NFS_COMMIT_PUSHED_VALID; 2754 1.83 fvdl } else { 2755 1.83 fvdl if (hi > np->n_pushedhi) 2756 1.83 fvdl np->n_pushedhi = hi; 2757 1.83 fvdl if (lo < np->n_pushedlo) 2758 1.83 fvdl np->n_pushedlo = lo; 2759 1.83 fvdl } 2760 1.111 yamt #ifdef NFS_DEBUG_COMMIT 2761 1.83 fvdl printf("add: committed: %u - %u\n", (unsigned)np->n_pushedlo, 2762 1.83 fvdl (unsigned)np->n_pushedhi); 2763 1.83 fvdl #endif 2764 1.83 fvdl } 2765 1.83 fvdl 2766 1.83 fvdl void 2767 1.89 chs nfs_del_committed_range(vp, off, len) 2768 1.83 fvdl struct vnode *vp; 2769 1.89 chs off_t off, len; 2770 1.83 fvdl { 2771 1.83 fvdl struct nfsnode *np = VTONFS(vp); 2772 1.83 fvdl off_t lo, hi; 2773 1.83 fvdl 2774 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) 2775 1.83 fvdl return; 2776 1.83 fvdl 2777 1.89 chs lo = off; 2778 1.89 chs hi = lo + len; 2779 1.83 fvdl 2780 1.83 fvdl if (lo > np->n_pushedhi || hi < np->n_pushedlo) 2781 1.83 fvdl return; 2782 1.83 fvdl if (lo <= np->n_pushedlo) 2783 1.83 fvdl np->n_pushedlo = hi; 2784 1.83 fvdl else if (hi >= np->n_pushedhi) 2785 1.83 fvdl np->n_pushedhi = lo; 2786 1.83 fvdl else { 2787 1.83 fvdl /* 2788 1.83 fvdl * XXX There's only one range. If the deleted range 2789 1.83 fvdl * is in the middle, pick the largest of the 2790 1.83 fvdl * contiguous ranges that it leaves. 2791 1.83 fvdl */ 2792 1.83 fvdl if ((np->n_pushedlo - lo) > (hi - np->n_pushedhi)) 2793 1.83 fvdl np->n_pushedhi = lo; 2794 1.83 fvdl else 2795 1.83 fvdl np->n_pushedlo = hi; 2796 1.83 fvdl } 2797 1.111 yamt #ifdef NFS_DEBUG_COMMIT 2798 1.83 fvdl printf("del: committed: %u - %u\n", (unsigned)np->n_pushedlo, 2799 1.83 fvdl (unsigned)np->n_pushedhi); 2800 1.83 fvdl #endif 2801 1.83 fvdl } 2802 1.83 fvdl 2803 1.83 fvdl void 2804 1.89 chs nfs_add_tobecommitted_range(vp, off, len) 2805 1.83 fvdl struct vnode *vp; 2806 1.89 chs off_t off, len; 2807 1.83 fvdl { 2808 1.83 fvdl struct nfsnode *np = VTONFS(vp); 2809 1.83 fvdl off_t lo, hi; 2810 1.83 fvdl 2811 1.89 chs lo = off; 2812 1.89 chs hi = lo + len; 2813 1.83 fvdl 2814 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) { 2815 1.83 fvdl np->n_pushlo = lo; 2816 1.83 fvdl np->n_pushhi = hi; 2817 1.83 fvdl np->n_commitflags |= NFS_COMMIT_PUSH_VALID; 2818 1.83 fvdl } else { 2819 1.83 fvdl if (lo < np->n_pushlo) 2820 1.83 fvdl np->n_pushlo = lo; 2821 1.83 fvdl if (hi > np->n_pushhi) 2822 1.83 fvdl np->n_pushhi = hi; 2823 1.83 fvdl } 2824 1.111 yamt #ifdef NFS_DEBUG_COMMIT 2825 1.83 fvdl printf("add: tobecommitted: %u - %u\n", (unsigned)np->n_pushlo, 2826 1.83 fvdl (unsigned)np->n_pushhi); 2827 1.83 fvdl #endif 2828 1.83 fvdl } 2829 1.83 fvdl 2830 1.83 fvdl void 2831 1.89 chs nfs_del_tobecommitted_range(vp, off, len) 2832 1.83 fvdl struct vnode *vp; 2833 1.89 chs off_t off, len; 2834 1.83 fvdl { 2835 1.83 fvdl struct nfsnode *np = VTONFS(vp); 2836 1.83 fvdl off_t lo, hi; 2837 1.83 fvdl 2838 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) 2839 1.83 fvdl return; 2840 1.83 fvdl 2841 1.89 chs lo = off; 2842 1.89 chs hi = lo + len; 2843 1.83 fvdl 2844 1.83 fvdl if (lo > np->n_pushhi || hi < np->n_pushlo) 2845 1.83 fvdl return; 2846 1.83 fvdl 2847 1.83 fvdl if (lo <= np->n_pushlo) 2848 1.83 fvdl np->n_pushlo = hi; 2849 1.83 fvdl else if (hi >= np->n_pushhi) 2850 1.83 fvdl np->n_pushhi = lo; 2851 1.83 fvdl else { 2852 1.83 fvdl /* 2853 1.83 fvdl * XXX There's only one range. If the deleted range 2854 1.83 fvdl * is in the middle, pick the largest of the 2855 1.83 fvdl * contiguous ranges that it leaves. 2856 1.83 fvdl */ 2857 1.83 fvdl if ((np->n_pushlo - lo) > (hi - np->n_pushhi)) 2858 1.83 fvdl np->n_pushhi = lo; 2859 1.83 fvdl else 2860 1.83 fvdl np->n_pushlo = hi; 2861 1.83 fvdl } 2862 1.111 yamt #ifdef NFS_DEBUG_COMMIT 2863 1.83 fvdl printf("del: tobecommitted: %u - %u\n", (unsigned)np->n_pushlo, 2864 1.83 fvdl (unsigned)np->n_pushhi); 2865 1.83 fvdl #endif 2866 1.25 fvdl } 2867 1.25 fvdl 2868 1.25 fvdl /* 2869 1.25 fvdl * Map errnos to NFS error numbers. For Version 3 also filter out error 2870 1.25 fvdl * numbers not specified for the associated procedure. 2871 1.25 fvdl */ 2872 1.25 fvdl int 2873 1.25 fvdl nfsrv_errmap(nd, err) 2874 1.25 fvdl struct nfsrv_descript *nd; 2875 1.75 augustss int err; 2876 1.25 fvdl { 2877 1.90 jdolecek const short *defaulterrp, *errp; 2878 1.25 fvdl 2879 1.25 fvdl if (nd->nd_flag & ND_NFSV3) { 2880 1.25 fvdl if (nd->nd_procnum <= NFSPROC_COMMIT) { 2881 1.25 fvdl errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 2882 1.25 fvdl while (*++errp) { 2883 1.25 fvdl if (*errp == err) 2884 1.25 fvdl return (err); 2885 1.25 fvdl else if (*errp > err) 2886 1.25 fvdl break; 2887 1.25 fvdl } 2888 1.25 fvdl return ((int)*defaulterrp); 2889 1.25 fvdl } else 2890 1.25 fvdl return (err & 0xffff); 2891 1.25 fvdl } 2892 1.25 fvdl if (err <= ELAST) 2893 1.25 fvdl return ((int)nfsrv_v2errmap[err - 1]); 2894 1.25 fvdl return (NFSERR_IO); 2895 1.25 fvdl } 2896 1.25 fvdl 2897 1.126 yamt u_int32_t 2898 1.126 yamt nfs_getxid() 2899 1.126 yamt { 2900 1.126 yamt static u_int32_t base; 2901 1.126 yamt static u_int32_t nfs_xid = 0; 2902 1.126 yamt static struct simplelock nfs_xidlock = SIMPLELOCK_INITIALIZER; 2903 1.126 yamt u_int32_t newxid; 2904 1.126 yamt 2905 1.126 yamt simple_lock(&nfs_xidlock); 2906 1.126 yamt /* 2907 1.126 yamt * derive initial xid from system time 2908 1.126 yamt * XXX time is invalid if root not yet mounted 2909 1.126 yamt */ 2910 1.126 yamt if (__predict_false(!base && (rootvp))) { 2911 1.126 yamt struct timeval tv; 2912 1.126 yamt 2913 1.126 yamt microtime(&tv); 2914 1.126 yamt base = tv.tv_sec << 12; 2915 1.126 yamt nfs_xid = base; 2916 1.126 yamt } 2917 1.126 yamt 2918 1.126 yamt /* 2919 1.126 yamt * Skip zero xid if it should ever happen. 2920 1.126 yamt */ 2921 1.126 yamt if (__predict_false(++nfs_xid == 0)) 2922 1.126 yamt nfs_xid++; 2923 1.126 yamt newxid = nfs_xid; 2924 1.126 yamt simple_unlock(&nfs_xidlock); 2925 1.126 yamt 2926 1.126 yamt return txdr_unsigned(newxid); 2927 1.126 yamt } 2928 1.126 yamt 2929 1.126 yamt /* 2930 1.126 yamt * assign a new xid for existing request. 2931 1.126 yamt * used for NFSERR_JUKEBOX handling. 2932 1.126 yamt */ 2933 1.126 yamt void 2934 1.126 yamt nfs_renewxid(struct nfsreq *req) 2935 1.126 yamt { 2936 1.126 yamt u_int32_t xid; 2937 1.126 yamt int off; 2938 1.126 yamt 2939 1.126 yamt xid = nfs_getxid(); 2940 1.126 yamt if (req->r_nmp->nm_sotype == SOCK_STREAM) 2941 1.126 yamt off = sizeof(u_int32_t); /* RPC record mark */ 2942 1.126 yamt else 2943 1.126 yamt off = 0; 2944 1.126 yamt 2945 1.126 yamt m_copyback(req->r_mreq, off, sizeof(xid), (void *)&xid); 2946 1.126 yamt req->r_xid = xid; 2947 1.1 cgd } 2948 1.168 yamt 2949 1.168 yamt #if defined(NFSSERVER) 2950 1.168 yamt int 2951 1.181 thorpej nfsrv_composefh(struct vnode *vp, nfsrvfh_t *nsfh, bool v3) 2952 1.168 yamt { 2953 1.168 yamt int error; 2954 1.168 yamt size_t fhsize; 2955 1.168 yamt 2956 1.168 yamt fhsize = NFSD_MAXFHSIZE; 2957 1.169 yamt error = vfs_composefh(vp, (void *)NFSRVFH_DATA(nsfh), &fhsize); 2958 1.168 yamt if (NFSX_FHTOOBIG_P(fhsize, v3)) { 2959 1.168 yamt error = EOPNOTSUPP; 2960 1.168 yamt } 2961 1.168 yamt if (error != 0) { 2962 1.168 yamt return error; 2963 1.168 yamt } 2964 1.168 yamt if (!v3 && fhsize < NFSX_V2FH) { 2965 1.168 yamt memset((char *)NFSRVFH_DATA(nsfh) + fhsize, 0, 2966 1.168 yamt NFSX_V2FH - fhsize); 2967 1.168 yamt fhsize = NFSX_V2FH; 2968 1.168 yamt } 2969 1.168 yamt if ((fhsize % NFSX_UNSIGNED) != 0) { 2970 1.168 yamt return EOPNOTSUPP; 2971 1.168 yamt } 2972 1.168 yamt nsfh->nsfh_size = fhsize; 2973 1.168 yamt return 0; 2974 1.168 yamt } 2975 1.168 yamt 2976 1.168 yamt int 2977 1.168 yamt nfsrv_comparefh(const nfsrvfh_t *fh1, const nfsrvfh_t *fh2) 2978 1.168 yamt { 2979 1.168 yamt 2980 1.168 yamt if (NFSRVFH_SIZE(fh1) != NFSRVFH_SIZE(fh2)) { 2981 1.168 yamt return NFSRVFH_SIZE(fh2) - NFSRVFH_SIZE(fh1); 2982 1.168 yamt } 2983 1.168 yamt return memcmp(NFSRVFH_DATA(fh1), NFSRVFH_DATA(fh2), NFSRVFH_SIZE(fh1)); 2984 1.168 yamt } 2985 1.168 yamt 2986 1.168 yamt void 2987 1.168 yamt nfsrv_copyfh(nfsrvfh_t *fh1, const nfsrvfh_t *fh2) 2988 1.168 yamt { 2989 1.168 yamt size_t size; 2990 1.168 yamt 2991 1.168 yamt fh1->nsfh_size = size = NFSRVFH_SIZE(fh2); 2992 1.168 yamt memcpy(NFSRVFH_DATA(fh1), NFSRVFH_DATA(fh2), size); 2993 1.168 yamt } 2994 1.168 yamt #endif /* defined(NFSSERVER) */ 2995
Indexes created Mon Sep 22 13:09:51 GMT 2025