nfs_subs.c revision 1.105
1 1.105 yamt /* $NetBSD: nfs_subs.c,v 1.105 2002/10/21 12:52:33 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 1.1 cgd * 3. All advertising materials mentioning features or use of this software 19 1.1 cgd * must display the following acknowledgement: 20 1.1 cgd * This product includes software developed by the University of 21 1.1 cgd * California, Berkeley and its contributors. 22 1.1 cgd * 4. Neither the name of the University nor the names of its contributors 23 1.1 cgd * may be used to endorse or promote products derived from this software 24 1.1 cgd * without specific prior written permission. 25 1.1 cgd * 26 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 1.1 cgd * SUCH DAMAGE. 37 1.1 cgd * 38 1.25 fvdl * @(#)nfs_subs.c 8.8 (Berkeley) 5/22/95 39 1.1 cgd */ 40 1.1 cgd 41 1.83 fvdl /* 42 1.83 fvdl * Copyright 2000 Wasabi Systems, Inc. 43 1.83 fvdl * All rights reserved. 44 1.83 fvdl * 45 1.83 fvdl * Written by Frank van der Linden for Wasabi Systems, Inc. 46 1.83 fvdl * 47 1.83 fvdl * Redistribution and use in source and binary forms, with or without 48 1.83 fvdl * modification, are permitted provided that the following conditions 49 1.83 fvdl * are met: 50 1.83 fvdl * 1. Redistributions of source code must retain the above copyright 51 1.83 fvdl * notice, this list of conditions and the following disclaimer. 52 1.83 fvdl * 2. Redistributions in binary form must reproduce the above copyright 53 1.83 fvdl * notice, this list of conditions and the following disclaimer in the 54 1.83 fvdl * documentation and/or other materials provided with the distribution. 55 1.83 fvdl * 3. All advertising materials mentioning features or use of this software 56 1.83 fvdl * must display the following acknowledgement: 57 1.83 fvdl * This product includes software developed for the NetBSD Project by 58 1.83 fvdl * Wasabi Systems, Inc. 59 1.83 fvdl * 4. The name of Wasabi Systems, Inc. may not be used to endorse 60 1.83 fvdl * or promote products derived from this software without specific prior 61 1.83 fvdl * written permission. 62 1.83 fvdl * 63 1.83 fvdl * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 64 1.83 fvdl * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 65 1.83 fvdl * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 66 1.83 fvdl * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 67 1.83 fvdl * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 68 1.83 fvdl * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 69 1.83 fvdl * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 70 1.83 fvdl * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 71 1.83 fvdl * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 72 1.83 fvdl * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 73 1.83 fvdl * POSSIBILITY OF SUCH DAMAGE. 74 1.83 fvdl */ 75 1.99 lukem 76 1.99 lukem #include <sys/cdefs.h> 77 1.105 yamt __KERNEL_RCSID(0, "$NetBSD: nfs_subs.c,v 1.105 2002/10/21 12:52:33 yamt Exp $"); 78 1.83 fvdl 79 1.55 thorpej #include "fs_nfs.h" 80 1.82 bjh21 #include "opt_nfs.h" 81 1.61 thorpej #include "opt_nfsserver.h" 82 1.62 jonathan #include "opt_iso.h" 83 1.76 fvdl #include "opt_inet.h" 84 1.25 fvdl 85 1.1 cgd /* 86 1.1 cgd * These functions support the macros and help fiddle mbuf chains for 87 1.1 cgd * the nfs op functions. They do things like create the rpc header and 88 1.1 cgd * copy data between mbuf chains and uio lists. 89 1.1 cgd */ 90 1.9 mycroft #include <sys/param.h> 91 1.9 mycroft #include <sys/proc.h> 92 1.9 mycroft #include <sys/systm.h> 93 1.9 mycroft #include <sys/kernel.h> 94 1.9 mycroft #include <sys/mount.h> 95 1.9 mycroft #include <sys/vnode.h> 96 1.9 mycroft #include <sys/namei.h> 97 1.9 mycroft #include <sys/mbuf.h> 98 1.12 mycroft #include <sys/socket.h> 99 1.12 mycroft #include <sys/stat.h> 100 1.25 fvdl #include <sys/malloc.h> 101 1.98 fvdl #include <sys/filedesc.h> 102 1.30 fvdl #include <sys/time.h> 103 1.43 fvdl #include <sys/dirent.h> 104 1.1 cgd 105 1.51 mrg #include <uvm/uvm_extern.h> 106 1.51 mrg 107 1.9 mycroft #include <nfs/rpcv2.h> 108 1.25 fvdl #include <nfs/nfsproto.h> 109 1.9 mycroft #include <nfs/nfsnode.h> 110 1.9 mycroft #include <nfs/nfs.h> 111 1.9 mycroft #include <nfs/xdr_subs.h> 112 1.9 mycroft #include <nfs/nfsm_subs.h> 113 1.12 mycroft #include <nfs/nfsmount.h> 114 1.12 mycroft #include <nfs/nqnfs.h> 115 1.12 mycroft #include <nfs/nfsrtt.h> 116 1.24 christos #include <nfs/nfs_var.h> 117 1.12 mycroft 118 1.12 mycroft #include <miscfs/specfs/specdev.h> 119 1.24 christos 120 1.12 mycroft #include <netinet/in.h> 121 1.12 mycroft #ifdef ISO 122 1.12 mycroft #include <netiso/iso.h> 123 1.12 mycroft #endif 124 1.1 cgd 125 1.1 cgd /* 126 1.1 cgd * Data items converted to xdr at startup, since they are constant 127 1.1 cgd * This is kinda hokey, but may save a little time doing byte swaps 128 1.1 cgd */ 129 1.22 cgd u_int32_t nfs_xdrneg1; 130 1.22 cgd u_int32_t rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 131 1.25 fvdl rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 132 1.12 mycroft rpc_auth_kerb; 133 1.25 fvdl u_int32_t nfs_prog, nqnfs_prog, nfs_true, nfs_false; 134 1.12 mycroft 135 1.1 cgd /* And other global data */ 136 1.22 cgd static u_int32_t nfs_xid = 0; 137 1.90 jdolecek const nfstype nfsv2_type[9] = 138 1.90 jdolecek { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON, NFCHR, NFNON }; 139 1.90 jdolecek const nfstype nfsv3_type[9] = 140 1.90 jdolecek { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK, NFFIFO, NFNON }; 141 1.90 jdolecek const enum vtype nv2tov_type[8] = 142 1.90 jdolecek { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON }; 143 1.90 jdolecek const enum vtype nv3tov_type[8] = 144 1.90 jdolecek { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO }; 145 1.25 fvdl int nfs_ticks; 146 1.100 chs int nfs_commitsize; 147 1.25 fvdl 148 1.35 thorpej /* NFS client/server stats. */ 149 1.35 thorpej struct nfsstats nfsstats; 150 1.35 thorpej 151 1.25 fvdl /* 152 1.25 fvdl * Mapping of old NFS Version 2 RPC numbers to generic numbers. 153 1.25 fvdl */ 154 1.90 jdolecek const int nfsv3_procid[NFS_NPROCS] = { 155 1.25 fvdl NFSPROC_NULL, 156 1.25 fvdl NFSPROC_GETATTR, 157 1.25 fvdl NFSPROC_SETATTR, 158 1.25 fvdl NFSPROC_NOOP, 159 1.25 fvdl NFSPROC_LOOKUP, 160 1.25 fvdl NFSPROC_READLINK, 161 1.25 fvdl NFSPROC_READ, 162 1.25 fvdl NFSPROC_NOOP, 163 1.25 fvdl NFSPROC_WRITE, 164 1.25 fvdl NFSPROC_CREATE, 165 1.25 fvdl NFSPROC_REMOVE, 166 1.25 fvdl NFSPROC_RENAME, 167 1.25 fvdl NFSPROC_LINK, 168 1.25 fvdl NFSPROC_SYMLINK, 169 1.25 fvdl NFSPROC_MKDIR, 170 1.25 fvdl NFSPROC_RMDIR, 171 1.25 fvdl NFSPROC_READDIR, 172 1.25 fvdl NFSPROC_FSSTAT, 173 1.25 fvdl NFSPROC_NOOP, 174 1.25 fvdl NFSPROC_NOOP, 175 1.25 fvdl NFSPROC_NOOP, 176 1.25 fvdl NFSPROC_NOOP, 177 1.25 fvdl NFSPROC_NOOP, 178 1.25 fvdl NFSPROC_NOOP, 179 1.25 fvdl NFSPROC_NOOP, 180 1.25 fvdl NFSPROC_NOOP 181 1.25 fvdl }; 182 1.25 fvdl 183 1.25 fvdl /* 184 1.25 fvdl * and the reverse mapping from generic to Version 2 procedure numbers 185 1.25 fvdl */ 186 1.90 jdolecek const int nfsv2_procid[NFS_NPROCS] = { 187 1.25 fvdl NFSV2PROC_NULL, 188 1.25 fvdl NFSV2PROC_GETATTR, 189 1.25 fvdl NFSV2PROC_SETATTR, 190 1.25 fvdl NFSV2PROC_LOOKUP, 191 1.25 fvdl NFSV2PROC_NOOP, 192 1.25 fvdl NFSV2PROC_READLINK, 193 1.25 fvdl NFSV2PROC_READ, 194 1.25 fvdl NFSV2PROC_WRITE, 195 1.25 fvdl NFSV2PROC_CREATE, 196 1.25 fvdl NFSV2PROC_MKDIR, 197 1.25 fvdl NFSV2PROC_SYMLINK, 198 1.25 fvdl NFSV2PROC_CREATE, 199 1.25 fvdl NFSV2PROC_REMOVE, 200 1.25 fvdl NFSV2PROC_RMDIR, 201 1.25 fvdl NFSV2PROC_RENAME, 202 1.25 fvdl NFSV2PROC_LINK, 203 1.25 fvdl NFSV2PROC_READDIR, 204 1.25 fvdl NFSV2PROC_NOOP, 205 1.25 fvdl NFSV2PROC_STATFS, 206 1.25 fvdl NFSV2PROC_NOOP, 207 1.25 fvdl NFSV2PROC_NOOP, 208 1.25 fvdl NFSV2PROC_NOOP, 209 1.25 fvdl NFSV2PROC_NOOP, 210 1.25 fvdl NFSV2PROC_NOOP, 211 1.25 fvdl NFSV2PROC_NOOP, 212 1.25 fvdl NFSV2PROC_NOOP, 213 1.25 fvdl }; 214 1.25 fvdl 215 1.25 fvdl /* 216 1.25 fvdl * Maps errno values to nfs error numbers. 217 1.25 fvdl * Use NFSERR_IO as the catch all for ones not specifically defined in 218 1.25 fvdl * RFC 1094. 219 1.25 fvdl */ 220 1.90 jdolecek static const u_char nfsrv_v2errmap[ELAST] = { 221 1.25 fvdl NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 222 1.25 fvdl NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 223 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 224 1.25 fvdl NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 225 1.25 fvdl NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 226 1.25 fvdl NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 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 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 230 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 231 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 232 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 233 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 234 1.25 fvdl NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 235 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 236 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 237 1.52 mikel NFSERR_IO, NFSERR_IO, 238 1.25 fvdl }; 239 1.25 fvdl 240 1.25 fvdl /* 241 1.25 fvdl * Maps errno values to nfs error numbers. 242 1.25 fvdl * Although it is not obvious whether or not NFS clients really care if 243 1.25 fvdl * a returned error value is in the specified list for the procedure, the 244 1.25 fvdl * safest thing to do is filter them appropriately. For Version 2, the 245 1.25 fvdl * X/Open XNFS document is the only specification that defines error values 246 1.25 fvdl * for each RPC (The RFC simply lists all possible error values for all RPCs), 247 1.25 fvdl * so I have decided to not do this for Version 2. 248 1.25 fvdl * The first entry is the default error return and the rest are the valid 249 1.25 fvdl * errors for that RPC in increasing numeric order. 250 1.25 fvdl */ 251 1.90 jdolecek static const short nfsv3err_null[] = { 252 1.25 fvdl 0, 253 1.25 fvdl 0, 254 1.25 fvdl }; 255 1.25 fvdl 256 1.90 jdolecek static const short nfsv3err_getattr[] = { 257 1.25 fvdl NFSERR_IO, 258 1.25 fvdl NFSERR_IO, 259 1.25 fvdl NFSERR_STALE, 260 1.25 fvdl NFSERR_BADHANDLE, 261 1.25 fvdl NFSERR_SERVERFAULT, 262 1.25 fvdl 0, 263 1.25 fvdl }; 264 1.25 fvdl 265 1.90 jdolecek static const short nfsv3err_setattr[] = { 266 1.25 fvdl NFSERR_IO, 267 1.25 fvdl NFSERR_PERM, 268 1.25 fvdl NFSERR_IO, 269 1.25 fvdl NFSERR_ACCES, 270 1.25 fvdl NFSERR_INVAL, 271 1.25 fvdl NFSERR_NOSPC, 272 1.25 fvdl NFSERR_ROFS, 273 1.25 fvdl NFSERR_DQUOT, 274 1.25 fvdl NFSERR_STALE, 275 1.25 fvdl NFSERR_BADHANDLE, 276 1.25 fvdl NFSERR_NOT_SYNC, 277 1.25 fvdl NFSERR_SERVERFAULT, 278 1.25 fvdl 0, 279 1.25 fvdl }; 280 1.25 fvdl 281 1.90 jdolecek static const short nfsv3err_lookup[] = { 282 1.25 fvdl NFSERR_IO, 283 1.25 fvdl NFSERR_NOENT, 284 1.25 fvdl NFSERR_IO, 285 1.25 fvdl NFSERR_ACCES, 286 1.25 fvdl NFSERR_NOTDIR, 287 1.25 fvdl NFSERR_NAMETOL, 288 1.25 fvdl NFSERR_STALE, 289 1.25 fvdl NFSERR_BADHANDLE, 290 1.25 fvdl NFSERR_SERVERFAULT, 291 1.25 fvdl 0, 292 1.25 fvdl }; 293 1.25 fvdl 294 1.90 jdolecek static const short nfsv3err_access[] = { 295 1.25 fvdl NFSERR_IO, 296 1.25 fvdl NFSERR_IO, 297 1.25 fvdl NFSERR_STALE, 298 1.25 fvdl NFSERR_BADHANDLE, 299 1.25 fvdl NFSERR_SERVERFAULT, 300 1.25 fvdl 0, 301 1.25 fvdl }; 302 1.25 fvdl 303 1.90 jdolecek static const short nfsv3err_readlink[] = { 304 1.25 fvdl NFSERR_IO, 305 1.25 fvdl NFSERR_IO, 306 1.25 fvdl NFSERR_ACCES, 307 1.25 fvdl NFSERR_INVAL, 308 1.25 fvdl NFSERR_STALE, 309 1.25 fvdl NFSERR_BADHANDLE, 310 1.25 fvdl NFSERR_NOTSUPP, 311 1.25 fvdl NFSERR_SERVERFAULT, 312 1.25 fvdl 0, 313 1.25 fvdl }; 314 1.25 fvdl 315 1.90 jdolecek static const short nfsv3err_read[] = { 316 1.25 fvdl NFSERR_IO, 317 1.25 fvdl NFSERR_IO, 318 1.25 fvdl NFSERR_NXIO, 319 1.25 fvdl NFSERR_ACCES, 320 1.25 fvdl NFSERR_INVAL, 321 1.25 fvdl NFSERR_STALE, 322 1.25 fvdl NFSERR_BADHANDLE, 323 1.25 fvdl NFSERR_SERVERFAULT, 324 1.67 fvdl NFSERR_JUKEBOX, 325 1.25 fvdl 0, 326 1.25 fvdl }; 327 1.25 fvdl 328 1.90 jdolecek static const short nfsv3err_write[] = { 329 1.25 fvdl NFSERR_IO, 330 1.25 fvdl NFSERR_IO, 331 1.25 fvdl NFSERR_ACCES, 332 1.25 fvdl NFSERR_INVAL, 333 1.25 fvdl NFSERR_FBIG, 334 1.25 fvdl NFSERR_NOSPC, 335 1.25 fvdl NFSERR_ROFS, 336 1.25 fvdl NFSERR_DQUOT, 337 1.25 fvdl NFSERR_STALE, 338 1.25 fvdl NFSERR_BADHANDLE, 339 1.25 fvdl NFSERR_SERVERFAULT, 340 1.68 fvdl NFSERR_JUKEBOX, 341 1.25 fvdl 0, 342 1.25 fvdl }; 343 1.25 fvdl 344 1.90 jdolecek static const short nfsv3err_create[] = { 345 1.25 fvdl NFSERR_IO, 346 1.25 fvdl NFSERR_IO, 347 1.25 fvdl NFSERR_ACCES, 348 1.25 fvdl NFSERR_EXIST, 349 1.25 fvdl NFSERR_NOTDIR, 350 1.25 fvdl NFSERR_NOSPC, 351 1.25 fvdl NFSERR_ROFS, 352 1.25 fvdl NFSERR_NAMETOL, 353 1.25 fvdl NFSERR_DQUOT, 354 1.25 fvdl NFSERR_STALE, 355 1.25 fvdl NFSERR_BADHANDLE, 356 1.25 fvdl NFSERR_NOTSUPP, 357 1.25 fvdl NFSERR_SERVERFAULT, 358 1.25 fvdl 0, 359 1.25 fvdl }; 360 1.25 fvdl 361 1.90 jdolecek static const short nfsv3err_mkdir[] = { 362 1.25 fvdl NFSERR_IO, 363 1.25 fvdl NFSERR_IO, 364 1.25 fvdl NFSERR_ACCES, 365 1.25 fvdl NFSERR_EXIST, 366 1.25 fvdl NFSERR_NOTDIR, 367 1.25 fvdl NFSERR_NOSPC, 368 1.25 fvdl NFSERR_ROFS, 369 1.25 fvdl NFSERR_NAMETOL, 370 1.25 fvdl NFSERR_DQUOT, 371 1.25 fvdl NFSERR_STALE, 372 1.25 fvdl NFSERR_BADHANDLE, 373 1.25 fvdl NFSERR_NOTSUPP, 374 1.25 fvdl NFSERR_SERVERFAULT, 375 1.25 fvdl 0, 376 1.25 fvdl }; 377 1.25 fvdl 378 1.90 jdolecek static const short nfsv3err_symlink[] = { 379 1.25 fvdl NFSERR_IO, 380 1.25 fvdl NFSERR_IO, 381 1.25 fvdl NFSERR_ACCES, 382 1.25 fvdl NFSERR_EXIST, 383 1.25 fvdl NFSERR_NOTDIR, 384 1.25 fvdl NFSERR_NOSPC, 385 1.25 fvdl NFSERR_ROFS, 386 1.25 fvdl NFSERR_NAMETOL, 387 1.25 fvdl NFSERR_DQUOT, 388 1.25 fvdl NFSERR_STALE, 389 1.25 fvdl NFSERR_BADHANDLE, 390 1.25 fvdl NFSERR_NOTSUPP, 391 1.25 fvdl NFSERR_SERVERFAULT, 392 1.25 fvdl 0, 393 1.25 fvdl }; 394 1.25 fvdl 395 1.90 jdolecek static const short nfsv3err_mknod[] = { 396 1.25 fvdl NFSERR_IO, 397 1.25 fvdl NFSERR_IO, 398 1.25 fvdl NFSERR_ACCES, 399 1.25 fvdl NFSERR_EXIST, 400 1.25 fvdl NFSERR_NOTDIR, 401 1.25 fvdl NFSERR_NOSPC, 402 1.25 fvdl NFSERR_ROFS, 403 1.25 fvdl NFSERR_NAMETOL, 404 1.25 fvdl NFSERR_DQUOT, 405 1.25 fvdl NFSERR_STALE, 406 1.25 fvdl NFSERR_BADHANDLE, 407 1.25 fvdl NFSERR_NOTSUPP, 408 1.25 fvdl NFSERR_SERVERFAULT, 409 1.25 fvdl NFSERR_BADTYPE, 410 1.25 fvdl 0, 411 1.25 fvdl }; 412 1.25 fvdl 413 1.90 jdolecek static const short nfsv3err_remove[] = { 414 1.25 fvdl NFSERR_IO, 415 1.25 fvdl NFSERR_NOENT, 416 1.25 fvdl NFSERR_IO, 417 1.25 fvdl NFSERR_ACCES, 418 1.25 fvdl NFSERR_NOTDIR, 419 1.25 fvdl NFSERR_ROFS, 420 1.25 fvdl NFSERR_NAMETOL, 421 1.25 fvdl NFSERR_STALE, 422 1.25 fvdl NFSERR_BADHANDLE, 423 1.25 fvdl NFSERR_SERVERFAULT, 424 1.25 fvdl 0, 425 1.25 fvdl }; 426 1.25 fvdl 427 1.90 jdolecek static const short nfsv3err_rmdir[] = { 428 1.25 fvdl NFSERR_IO, 429 1.25 fvdl NFSERR_NOENT, 430 1.25 fvdl NFSERR_IO, 431 1.25 fvdl NFSERR_ACCES, 432 1.25 fvdl NFSERR_EXIST, 433 1.25 fvdl NFSERR_NOTDIR, 434 1.25 fvdl NFSERR_INVAL, 435 1.25 fvdl NFSERR_ROFS, 436 1.25 fvdl NFSERR_NAMETOL, 437 1.25 fvdl NFSERR_NOTEMPTY, 438 1.25 fvdl NFSERR_STALE, 439 1.25 fvdl NFSERR_BADHANDLE, 440 1.25 fvdl NFSERR_NOTSUPP, 441 1.25 fvdl NFSERR_SERVERFAULT, 442 1.25 fvdl 0, 443 1.25 fvdl }; 444 1.25 fvdl 445 1.90 jdolecek static const short nfsv3err_rename[] = { 446 1.25 fvdl NFSERR_IO, 447 1.25 fvdl NFSERR_NOENT, 448 1.25 fvdl NFSERR_IO, 449 1.25 fvdl NFSERR_ACCES, 450 1.25 fvdl NFSERR_EXIST, 451 1.25 fvdl NFSERR_XDEV, 452 1.25 fvdl NFSERR_NOTDIR, 453 1.25 fvdl NFSERR_ISDIR, 454 1.25 fvdl NFSERR_INVAL, 455 1.25 fvdl NFSERR_NOSPC, 456 1.25 fvdl NFSERR_ROFS, 457 1.25 fvdl NFSERR_MLINK, 458 1.25 fvdl NFSERR_NAMETOL, 459 1.25 fvdl NFSERR_NOTEMPTY, 460 1.25 fvdl NFSERR_DQUOT, 461 1.25 fvdl NFSERR_STALE, 462 1.25 fvdl NFSERR_BADHANDLE, 463 1.25 fvdl NFSERR_NOTSUPP, 464 1.25 fvdl NFSERR_SERVERFAULT, 465 1.25 fvdl 0, 466 1.25 fvdl }; 467 1.25 fvdl 468 1.90 jdolecek static const short nfsv3err_link[] = { 469 1.25 fvdl NFSERR_IO, 470 1.25 fvdl NFSERR_IO, 471 1.25 fvdl NFSERR_ACCES, 472 1.25 fvdl NFSERR_EXIST, 473 1.25 fvdl NFSERR_XDEV, 474 1.25 fvdl NFSERR_NOTDIR, 475 1.25 fvdl NFSERR_INVAL, 476 1.25 fvdl NFSERR_NOSPC, 477 1.25 fvdl NFSERR_ROFS, 478 1.25 fvdl NFSERR_MLINK, 479 1.25 fvdl NFSERR_NAMETOL, 480 1.25 fvdl NFSERR_DQUOT, 481 1.25 fvdl NFSERR_STALE, 482 1.25 fvdl NFSERR_BADHANDLE, 483 1.25 fvdl NFSERR_NOTSUPP, 484 1.25 fvdl NFSERR_SERVERFAULT, 485 1.25 fvdl 0, 486 1.25 fvdl }; 487 1.25 fvdl 488 1.90 jdolecek static const short nfsv3err_readdir[] = { 489 1.25 fvdl NFSERR_IO, 490 1.25 fvdl NFSERR_IO, 491 1.25 fvdl NFSERR_ACCES, 492 1.25 fvdl NFSERR_NOTDIR, 493 1.25 fvdl NFSERR_STALE, 494 1.25 fvdl NFSERR_BADHANDLE, 495 1.25 fvdl NFSERR_BAD_COOKIE, 496 1.25 fvdl NFSERR_TOOSMALL, 497 1.25 fvdl NFSERR_SERVERFAULT, 498 1.25 fvdl 0, 499 1.25 fvdl }; 500 1.25 fvdl 501 1.90 jdolecek static const short nfsv3err_readdirplus[] = { 502 1.25 fvdl NFSERR_IO, 503 1.25 fvdl NFSERR_IO, 504 1.25 fvdl NFSERR_ACCES, 505 1.25 fvdl NFSERR_NOTDIR, 506 1.25 fvdl NFSERR_STALE, 507 1.25 fvdl NFSERR_BADHANDLE, 508 1.25 fvdl NFSERR_BAD_COOKIE, 509 1.25 fvdl NFSERR_NOTSUPP, 510 1.25 fvdl NFSERR_TOOSMALL, 511 1.25 fvdl NFSERR_SERVERFAULT, 512 1.25 fvdl 0, 513 1.25 fvdl }; 514 1.25 fvdl 515 1.90 jdolecek static const short nfsv3err_fsstat[] = { 516 1.25 fvdl NFSERR_IO, 517 1.25 fvdl NFSERR_IO, 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_fsinfo[] = { 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_pathconf[] = { 533 1.25 fvdl NFSERR_STALE, 534 1.25 fvdl NFSERR_STALE, 535 1.25 fvdl NFSERR_BADHANDLE, 536 1.25 fvdl NFSERR_SERVERFAULT, 537 1.25 fvdl 0, 538 1.25 fvdl }; 539 1.25 fvdl 540 1.90 jdolecek static const short nfsv3err_commit[] = { 541 1.25 fvdl NFSERR_IO, 542 1.25 fvdl NFSERR_IO, 543 1.25 fvdl NFSERR_STALE, 544 1.25 fvdl NFSERR_BADHANDLE, 545 1.25 fvdl NFSERR_SERVERFAULT, 546 1.25 fvdl 0, 547 1.25 fvdl }; 548 1.25 fvdl 549 1.90 jdolecek static const short * const nfsrv_v3errmap[] = { 550 1.25 fvdl nfsv3err_null, 551 1.25 fvdl nfsv3err_getattr, 552 1.25 fvdl nfsv3err_setattr, 553 1.25 fvdl nfsv3err_lookup, 554 1.25 fvdl nfsv3err_access, 555 1.25 fvdl nfsv3err_readlink, 556 1.25 fvdl nfsv3err_read, 557 1.25 fvdl nfsv3err_write, 558 1.25 fvdl nfsv3err_create, 559 1.25 fvdl nfsv3err_mkdir, 560 1.25 fvdl nfsv3err_symlink, 561 1.25 fvdl nfsv3err_mknod, 562 1.25 fvdl nfsv3err_remove, 563 1.25 fvdl nfsv3err_rmdir, 564 1.25 fvdl nfsv3err_rename, 565 1.25 fvdl nfsv3err_link, 566 1.25 fvdl nfsv3err_readdir, 567 1.25 fvdl nfsv3err_readdirplus, 568 1.25 fvdl nfsv3err_fsstat, 569 1.25 fvdl nfsv3err_fsinfo, 570 1.25 fvdl nfsv3err_pathconf, 571 1.25 fvdl nfsv3err_commit, 572 1.25 fvdl }; 573 1.25 fvdl 574 1.12 mycroft extern struct nfsrtt nfsrtt; 575 1.12 mycroft extern time_t nqnfsstarttime; 576 1.12 mycroft extern int nqsrv_clockskew; 577 1.12 mycroft extern int nqsrv_writeslack; 578 1.12 mycroft extern int nqsrv_maxlease; 579 1.92 jdolecek extern const int nqnfs_piggy[NFS_NPROCS]; 580 1.25 fvdl extern struct nfsnodehashhead *nfsnodehashtbl; 581 1.25 fvdl extern u_long nfsnodehash; 582 1.1 cgd 583 1.18 mycroft LIST_HEAD(nfsnodehashhead, nfsnode); 584 1.46 fvdl u_long nfsdirhashmask; 585 1.18 mycroft 586 1.43 fvdl int nfs_webnamei __P((struct nameidata *, struct vnode *, struct proc *)); 587 1.43 fvdl 588 1.1 cgd /* 589 1.1 cgd * Create the header for an rpc request packet 590 1.1 cgd * The hsiz is the size of the rest of the nfs request header. 591 1.1 cgd * (just used to decide if a cluster is a good idea) 592 1.1 cgd */ 593 1.12 mycroft struct mbuf * 594 1.12 mycroft nfsm_reqh(vp, procid, hsiz, bposp) 595 1.12 mycroft struct vnode *vp; 596 1.1 cgd u_long procid; 597 1.1 cgd int hsiz; 598 1.12 mycroft caddr_t *bposp; 599 1.12 mycroft { 600 1.75 augustss struct mbuf *mb; 601 1.86 fvdl caddr_t bpos; 602 1.86 fvdl struct nfsmount *nmp; 603 1.86 fvdl #ifndef NFS_V2_ONLY 604 1.75 augustss u_int32_t *tl; 605 1.12 mycroft struct mbuf *mb2; 606 1.12 mycroft int nqflag; 607 1.86 fvdl #endif 608 1.12 mycroft 609 1.12 mycroft MGET(mb, M_WAIT, MT_DATA); 610 1.12 mycroft if (hsiz >= MINCLSIZE) 611 1.12 mycroft MCLGET(mb, M_WAIT); 612 1.12 mycroft mb->m_len = 0; 613 1.12 mycroft bpos = mtod(mb, caddr_t); 614 1.12 mycroft 615 1.12 mycroft /* 616 1.12 mycroft * For NQNFS, add lease request. 617 1.12 mycroft */ 618 1.12 mycroft if (vp) { 619 1.12 mycroft nmp = VFSTONFS(vp->v_mount); 620 1.84 bjh21 #ifndef NFS_V2_ONLY 621 1.12 mycroft if (nmp->nm_flag & NFSMNT_NQNFS) { 622 1.12 mycroft nqflag = NQNFS_NEEDLEASE(vp, procid); 623 1.12 mycroft if (nqflag) { 624 1.22 cgd nfsm_build(tl, u_int32_t *, 2*NFSX_UNSIGNED); 625 1.12 mycroft *tl++ = txdr_unsigned(nqflag); 626 1.12 mycroft *tl = txdr_unsigned(nmp->nm_leaseterm); 627 1.12 mycroft } else { 628 1.22 cgd nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 629 1.12 mycroft *tl = 0; 630 1.12 mycroft } 631 1.12 mycroft } 632 1.84 bjh21 #endif 633 1.12 mycroft } 634 1.12 mycroft /* Finally, return values */ 635 1.12 mycroft *bposp = bpos; 636 1.12 mycroft return (mb); 637 1.12 mycroft } 638 1.12 mycroft 639 1.12 mycroft /* 640 1.12 mycroft * Build the RPC header and fill in the authorization info. 641 1.12 mycroft * The authorization string argument is only used when the credentials 642 1.12 mycroft * come from outside of the kernel. 643 1.12 mycroft * Returns the head of the mbuf list. 644 1.12 mycroft */ 645 1.12 mycroft struct mbuf * 646 1.25 fvdl nfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 647 1.25 fvdl verf_str, mrest, mrest_len, mbp, xidp) 648 1.75 augustss struct ucred *cr; 649 1.25 fvdl int nmflag; 650 1.12 mycroft int procid; 651 1.12 mycroft int auth_type; 652 1.12 mycroft int auth_len; 653 1.12 mycroft char *auth_str; 654 1.25 fvdl int verf_len; 655 1.25 fvdl char *verf_str; 656 1.12 mycroft struct mbuf *mrest; 657 1.12 mycroft int mrest_len; 658 1.12 mycroft struct mbuf **mbp; 659 1.22 cgd u_int32_t *xidp; 660 1.1 cgd { 661 1.75 augustss struct mbuf *mb; 662 1.75 augustss u_int32_t *tl; 663 1.75 augustss caddr_t bpos; 664 1.75 augustss int i; 665 1.12 mycroft struct mbuf *mreq, *mb2; 666 1.12 mycroft int siz, grpsiz, authsiz; 667 1.30 fvdl struct timeval tv; 668 1.30 fvdl static u_int32_t base; 669 1.1 cgd 670 1.12 mycroft authsiz = nfsm_rndup(auth_len); 671 1.12 mycroft MGETHDR(mb, M_WAIT, MT_DATA); 672 1.25 fvdl if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 673 1.12 mycroft MCLGET(mb, M_WAIT); 674 1.25 fvdl } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 675 1.25 fvdl MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 676 1.12 mycroft } else { 677 1.25 fvdl MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 678 1.1 cgd } 679 1.12 mycroft mb->m_len = 0; 680 1.12 mycroft mreq = mb; 681 1.12 mycroft bpos = mtod(mb, caddr_t); 682 1.12 mycroft 683 1.12 mycroft /* 684 1.12 mycroft * First the RPC header. 685 1.12 mycroft */ 686 1.25 fvdl nfsm_build(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 687 1.30 fvdl 688 1.30 fvdl /* 689 1.30 fvdl * derive initial xid from system time 690 1.30 fvdl * XXX time is invalid if root not yet mounted 691 1.30 fvdl */ 692 1.30 fvdl if (!base && (rootvp)) { 693 1.30 fvdl microtime(&tv); 694 1.30 fvdl base = tv.tv_sec << 12; 695 1.30 fvdl nfs_xid = base; 696 1.30 fvdl } 697 1.30 fvdl /* 698 1.30 fvdl * Skip zero xid if it should ever happen. 699 1.30 fvdl */ 700 1.12 mycroft if (++nfs_xid == 0) 701 1.12 mycroft nfs_xid++; 702 1.30 fvdl 703 1.12 mycroft *tl++ = *xidp = txdr_unsigned(nfs_xid); 704 1.1 cgd *tl++ = rpc_call; 705 1.1 cgd *tl++ = rpc_vers; 706 1.25 fvdl if (nmflag & NFSMNT_NQNFS) { 707 1.12 mycroft *tl++ = txdr_unsigned(NQNFS_PROG); 708 1.25 fvdl *tl++ = txdr_unsigned(NQNFS_VER3); 709 1.1 cgd } else { 710 1.12 mycroft *tl++ = txdr_unsigned(NFS_PROG); 711 1.25 fvdl if (nmflag & NFSMNT_NFSV3) 712 1.25 fvdl *tl++ = txdr_unsigned(NFS_VER3); 713 1.25 fvdl else 714 1.25 fvdl *tl++ = txdr_unsigned(NFS_VER2); 715 1.1 cgd } 716 1.25 fvdl if (nmflag & NFSMNT_NFSV3) 717 1.25 fvdl *tl++ = txdr_unsigned(procid); 718 1.25 fvdl else 719 1.25 fvdl *tl++ = txdr_unsigned(nfsv2_procid[procid]); 720 1.12 mycroft 721 1.12 mycroft /* 722 1.12 mycroft * And then the authorization cred. 723 1.12 mycroft */ 724 1.12 mycroft *tl++ = txdr_unsigned(auth_type); 725 1.12 mycroft *tl = txdr_unsigned(authsiz); 726 1.12 mycroft switch (auth_type) { 727 1.12 mycroft case RPCAUTH_UNIX: 728 1.22 cgd nfsm_build(tl, u_int32_t *, auth_len); 729 1.12 mycroft *tl++ = 0; /* stamp ?? */ 730 1.12 mycroft *tl++ = 0; /* NULL hostname */ 731 1.12 mycroft *tl++ = txdr_unsigned(cr->cr_uid); 732 1.19 jtc *tl++ = txdr_unsigned(cr->cr_gid); 733 1.12 mycroft grpsiz = (auth_len >> 2) - 5; 734 1.12 mycroft *tl++ = txdr_unsigned(grpsiz); 735 1.20 mycroft for (i = 0; i < grpsiz; i++) 736 1.12 mycroft *tl++ = txdr_unsigned(cr->cr_groups[i]); 737 1.12 mycroft break; 738 1.25 fvdl case RPCAUTH_KERB4: 739 1.12 mycroft siz = auth_len; 740 1.12 mycroft while (siz > 0) { 741 1.12 mycroft if (M_TRAILINGSPACE(mb) == 0) { 742 1.12 mycroft MGET(mb2, M_WAIT, MT_DATA); 743 1.12 mycroft if (siz >= MINCLSIZE) 744 1.12 mycroft MCLGET(mb2, M_WAIT); 745 1.12 mycroft mb->m_next = mb2; 746 1.12 mycroft mb = mb2; 747 1.12 mycroft mb->m_len = 0; 748 1.12 mycroft bpos = mtod(mb, caddr_t); 749 1.12 mycroft } 750 1.12 mycroft i = min(siz, M_TRAILINGSPACE(mb)); 751 1.63 perry memcpy(bpos, auth_str, i); 752 1.12 mycroft mb->m_len += i; 753 1.12 mycroft auth_str += i; 754 1.12 mycroft bpos += i; 755 1.12 mycroft siz -= i; 756 1.12 mycroft } 757 1.12 mycroft if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 758 1.12 mycroft for (i = 0; i < siz; i++) 759 1.12 mycroft *bpos++ = '\0'; 760 1.12 mycroft mb->m_len += siz; 761 1.12 mycroft } 762 1.12 mycroft break; 763 1.12 mycroft }; 764 1.25 fvdl 765 1.25 fvdl /* 766 1.25 fvdl * And the verifier... 767 1.25 fvdl */ 768 1.25 fvdl nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 769 1.25 fvdl if (verf_str) { 770 1.25 fvdl *tl++ = txdr_unsigned(RPCAUTH_KERB4); 771 1.25 fvdl *tl = txdr_unsigned(verf_len); 772 1.25 fvdl siz = verf_len; 773 1.25 fvdl while (siz > 0) { 774 1.25 fvdl if (M_TRAILINGSPACE(mb) == 0) { 775 1.25 fvdl MGET(mb2, M_WAIT, MT_DATA); 776 1.25 fvdl if (siz >= MINCLSIZE) 777 1.25 fvdl MCLGET(mb2, M_WAIT); 778 1.25 fvdl mb->m_next = mb2; 779 1.25 fvdl mb = mb2; 780 1.25 fvdl mb->m_len = 0; 781 1.25 fvdl bpos = mtod(mb, caddr_t); 782 1.25 fvdl } 783 1.25 fvdl i = min(siz, M_TRAILINGSPACE(mb)); 784 1.63 perry memcpy(bpos, verf_str, i); 785 1.25 fvdl mb->m_len += i; 786 1.25 fvdl verf_str += i; 787 1.25 fvdl bpos += i; 788 1.25 fvdl siz -= i; 789 1.25 fvdl } 790 1.25 fvdl if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 791 1.25 fvdl for (i = 0; i < siz; i++) 792 1.25 fvdl *bpos++ = '\0'; 793 1.25 fvdl mb->m_len += siz; 794 1.25 fvdl } 795 1.25 fvdl } else { 796 1.25 fvdl *tl++ = txdr_unsigned(RPCAUTH_NULL); 797 1.25 fvdl *tl = 0; 798 1.25 fvdl } 799 1.12 mycroft mb->m_next = mrest; 800 1.25 fvdl mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 801 1.12 mycroft mreq->m_pkthdr.rcvif = (struct ifnet *)0; 802 1.12 mycroft *mbp = mb; 803 1.1 cgd return (mreq); 804 1.1 cgd } 805 1.1 cgd 806 1.1 cgd /* 807 1.1 cgd * copies mbuf chain to the uio scatter/gather list 808 1.1 cgd */ 809 1.24 christos int 810 1.1 cgd nfsm_mbuftouio(mrep, uiop, siz, dpos) 811 1.1 cgd struct mbuf **mrep; 812 1.75 augustss struct uio *uiop; 813 1.1 cgd int siz; 814 1.1 cgd caddr_t *dpos; 815 1.1 cgd { 816 1.75 augustss char *mbufcp, *uiocp; 817 1.75 augustss int xfer, left, len; 818 1.75 augustss struct mbuf *mp; 819 1.1 cgd long uiosiz, rem; 820 1.1 cgd int error = 0; 821 1.1 cgd 822 1.1 cgd mp = *mrep; 823 1.1 cgd mbufcp = *dpos; 824 1.1 cgd len = mtod(mp, caddr_t)+mp->m_len-mbufcp; 825 1.1 cgd rem = nfsm_rndup(siz)-siz; 826 1.1 cgd while (siz > 0) { 827 1.1 cgd if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 828 1.1 cgd return (EFBIG); 829 1.1 cgd left = uiop->uio_iov->iov_len; 830 1.1 cgd uiocp = uiop->uio_iov->iov_base; 831 1.1 cgd if (left > siz) 832 1.1 cgd left = siz; 833 1.1 cgd uiosiz = left; 834 1.1 cgd while (left > 0) { 835 1.1 cgd while (len == 0) { 836 1.1 cgd mp = mp->m_next; 837 1.1 cgd if (mp == NULL) 838 1.1 cgd return (EBADRPC); 839 1.1 cgd mbufcp = mtod(mp, caddr_t); 840 1.1 cgd len = mp->m_len; 841 1.1 cgd } 842 1.1 cgd xfer = (left > len) ? len : left; 843 1.1 cgd #ifdef notdef 844 1.1 cgd /* Not Yet.. */ 845 1.1 cgd if (uiop->uio_iov->iov_op != NULL) 846 1.1 cgd (*(uiop->uio_iov->iov_op)) 847 1.1 cgd (mbufcp, uiocp, xfer); 848 1.1 cgd else 849 1.1 cgd #endif 850 1.1 cgd if (uiop->uio_segflg == UIO_SYSSPACE) 851 1.63 perry memcpy(uiocp, mbufcp, xfer); 852 1.1 cgd else 853 1.1 cgd copyout(mbufcp, uiocp, xfer); 854 1.1 cgd left -= xfer; 855 1.1 cgd len -= xfer; 856 1.1 cgd mbufcp += xfer; 857 1.1 cgd uiocp += xfer; 858 1.1 cgd uiop->uio_offset += xfer; 859 1.1 cgd uiop->uio_resid -= xfer; 860 1.1 cgd } 861 1.1 cgd if (uiop->uio_iov->iov_len <= siz) { 862 1.1 cgd uiop->uio_iovcnt--; 863 1.1 cgd uiop->uio_iov++; 864 1.1 cgd } else { 865 1.95 lukem uiop->uio_iov->iov_base = 866 1.95 lukem (caddr_t)uiop->uio_iov->iov_base + uiosiz; 867 1.1 cgd uiop->uio_iov->iov_len -= uiosiz; 868 1.1 cgd } 869 1.1 cgd siz -= uiosiz; 870 1.1 cgd } 871 1.1 cgd *dpos = mbufcp; 872 1.1 cgd *mrep = mp; 873 1.1 cgd if (rem > 0) { 874 1.1 cgd if (len < rem) 875 1.1 cgd error = nfs_adv(mrep, dpos, rem, len); 876 1.1 cgd else 877 1.1 cgd *dpos += rem; 878 1.1 cgd } 879 1.1 cgd return (error); 880 1.1 cgd } 881 1.1 cgd 882 1.1 cgd /* 883 1.29 fvdl * copies a uio scatter/gather list to an mbuf chain. 884 1.29 fvdl * NOTE: can ony handle iovcnt == 1 885 1.1 cgd */ 886 1.24 christos int 887 1.1 cgd nfsm_uiotombuf(uiop, mq, siz, bpos) 888 1.75 augustss struct uio *uiop; 889 1.1 cgd struct mbuf **mq; 890 1.1 cgd int siz; 891 1.1 cgd caddr_t *bpos; 892 1.1 cgd { 893 1.75 augustss char *uiocp; 894 1.75 augustss struct mbuf *mp, *mp2; 895 1.75 augustss int xfer, left, mlen; 896 1.1 cgd int uiosiz, clflg, rem; 897 1.1 cgd char *cp; 898 1.1 cgd 899 1.29 fvdl #ifdef DIAGNOSTIC 900 1.29 fvdl if (uiop->uio_iovcnt != 1) 901 1.29 fvdl panic("nfsm_uiotombuf: iovcnt != 1"); 902 1.29 fvdl #endif 903 1.29 fvdl 904 1.1 cgd if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 905 1.1 cgd clflg = 1; 906 1.1 cgd else 907 1.1 cgd clflg = 0; 908 1.1 cgd rem = nfsm_rndup(siz)-siz; 909 1.12 mycroft mp = mp2 = *mq; 910 1.1 cgd while (siz > 0) { 911 1.1 cgd left = uiop->uio_iov->iov_len; 912 1.1 cgd uiocp = uiop->uio_iov->iov_base; 913 1.1 cgd if (left > siz) 914 1.1 cgd left = siz; 915 1.1 cgd uiosiz = left; 916 1.1 cgd while (left > 0) { 917 1.12 mycroft mlen = M_TRAILINGSPACE(mp); 918 1.12 mycroft if (mlen == 0) { 919 1.12 mycroft MGET(mp, M_WAIT, MT_DATA); 920 1.12 mycroft if (clflg) 921 1.12 mycroft MCLGET(mp, M_WAIT); 922 1.12 mycroft mp->m_len = 0; 923 1.12 mycroft mp2->m_next = mp; 924 1.12 mycroft mp2 = mp; 925 1.12 mycroft mlen = M_TRAILINGSPACE(mp); 926 1.12 mycroft } 927 1.12 mycroft xfer = (left > mlen) ? mlen : left; 928 1.1 cgd #ifdef notdef 929 1.1 cgd /* Not Yet.. */ 930 1.1 cgd if (uiop->uio_iov->iov_op != NULL) 931 1.1 cgd (*(uiop->uio_iov->iov_op)) 932 1.12 mycroft (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 933 1.1 cgd else 934 1.1 cgd #endif 935 1.1 cgd if (uiop->uio_segflg == UIO_SYSSPACE) 936 1.63 perry memcpy(mtod(mp, caddr_t)+mp->m_len, uiocp, xfer); 937 1.1 cgd else 938 1.12 mycroft copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 939 1.12 mycroft mp->m_len += xfer; 940 1.1 cgd left -= xfer; 941 1.1 cgd uiocp += xfer; 942 1.1 cgd uiop->uio_offset += xfer; 943 1.1 cgd uiop->uio_resid -= xfer; 944 1.1 cgd } 945 1.95 lukem uiop->uio_iov->iov_base = (caddr_t)uiop->uio_iov->iov_base + 946 1.95 lukem uiosiz; 947 1.29 fvdl uiop->uio_iov->iov_len -= uiosiz; 948 1.1 cgd siz -= uiosiz; 949 1.1 cgd } 950 1.1 cgd if (rem > 0) { 951 1.12 mycroft if (rem > M_TRAILINGSPACE(mp)) { 952 1.1 cgd MGET(mp, M_WAIT, MT_DATA); 953 1.1 cgd mp->m_len = 0; 954 1.1 cgd mp2->m_next = mp; 955 1.1 cgd } 956 1.1 cgd cp = mtod(mp, caddr_t)+mp->m_len; 957 1.1 cgd for (left = 0; left < rem; left++) 958 1.1 cgd *cp++ = '\0'; 959 1.1 cgd mp->m_len += rem; 960 1.1 cgd *bpos = cp; 961 1.1 cgd } else 962 1.1 cgd *bpos = mtod(mp, caddr_t)+mp->m_len; 963 1.1 cgd *mq = mp; 964 1.1 cgd return (0); 965 1.1 cgd } 966 1.1 cgd 967 1.1 cgd /* 968 1.39 fvdl * Get at least "siz" bytes of correctly aligned data. 969 1.39 fvdl * When called the mbuf pointers are not necessarily correct, 970 1.39 fvdl * dsosp points to what ought to be in m_data and left contains 971 1.39 fvdl * what ought to be in m_len. 972 1.12 mycroft * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 973 1.1 cgd * cases. (The macros use the vars. dpos and dpos2) 974 1.1 cgd */ 975 1.24 christos int 976 1.12 mycroft nfsm_disct(mdp, dposp, siz, left, cp2) 977 1.1 cgd struct mbuf **mdp; 978 1.1 cgd caddr_t *dposp; 979 1.1 cgd int siz; 980 1.1 cgd int left; 981 1.1 cgd caddr_t *cp2; 982 1.1 cgd { 983 1.75 augustss struct mbuf *m1, *m2; 984 1.39 fvdl struct mbuf *havebuf = NULL; 985 1.39 fvdl caddr_t src = *dposp; 986 1.39 fvdl caddr_t dst; 987 1.39 fvdl int len; 988 1.39 fvdl 989 1.39 fvdl #ifdef DEBUG 990 1.39 fvdl if (left < 0) 991 1.39 fvdl panic("nfsm_disct: left < 0"); 992 1.39 fvdl #endif 993 1.39 fvdl m1 = *mdp; 994 1.39 fvdl /* 995 1.39 fvdl * Skip through the mbuf chain looking for an mbuf with 996 1.39 fvdl * some data. If the first mbuf found has enough data 997 1.39 fvdl * and it is correctly aligned return it. 998 1.39 fvdl */ 999 1.1 cgd while (left == 0) { 1000 1.39 fvdl havebuf = m1; 1001 1.39 fvdl *mdp = m1 = m1->m_next; 1002 1.39 fvdl if (m1 == NULL) 1003 1.1 cgd return (EBADRPC); 1004 1.39 fvdl src = mtod(m1, caddr_t); 1005 1.39 fvdl left = m1->m_len; 1006 1.39 fvdl /* 1007 1.39 fvdl * If we start a new mbuf and it is big enough 1008 1.39 fvdl * and correctly aligned just return it, don't 1009 1.39 fvdl * do any pull up. 1010 1.39 fvdl */ 1011 1.39 fvdl if (left >= siz && nfsm_aligned(src)) { 1012 1.39 fvdl *cp2 = src; 1013 1.39 fvdl *dposp = src + siz; 1014 1.39 fvdl return (0); 1015 1.39 fvdl } 1016 1.1 cgd } 1017 1.39 fvdl if (m1->m_flags & M_EXT) { 1018 1.39 fvdl if (havebuf) { 1019 1.39 fvdl /* If the first mbuf with data has external data 1020 1.39 fvdl * and there is a previous empty mbuf use it 1021 1.39 fvdl * to move the data into. 1022 1.39 fvdl */ 1023 1.39 fvdl m2 = m1; 1024 1.39 fvdl *mdp = m1 = havebuf; 1025 1.39 fvdl if (m1->m_flags & M_EXT) { 1026 1.41 thorpej MEXTREMOVE(m1); 1027 1.1 cgd } 1028 1.39 fvdl } else { 1029 1.39 fvdl /* 1030 1.39 fvdl * If the first mbuf has a external data 1031 1.39 fvdl * and there is no previous empty mbuf 1032 1.39 fvdl * allocate a new mbuf and move the external 1033 1.39 fvdl * data to the new mbuf. Also make the first 1034 1.39 fvdl * mbuf look empty. 1035 1.39 fvdl */ 1036 1.39 fvdl m2 = m_get(M_WAIT, MT_DATA); 1037 1.39 fvdl m2->m_ext = m1->m_ext; 1038 1.39 fvdl m2->m_data = src; 1039 1.39 fvdl m2->m_len = left; 1040 1.41 thorpej MCLADDREFERENCE(m1, m2); 1041 1.41 thorpej MEXTREMOVE(m1); 1042 1.39 fvdl m2->m_next = m1->m_next; 1043 1.39 fvdl m1->m_next = m2; 1044 1.1 cgd } 1045 1.39 fvdl m1->m_len = 0; 1046 1.39 fvdl dst = m1->m_dat; 1047 1.39 fvdl } else { 1048 1.39 fvdl /* 1049 1.39 fvdl * If the first mbuf has no external data 1050 1.39 fvdl * move the data to the front of the mbuf. 1051 1.39 fvdl */ 1052 1.39 fvdl if ((dst = m1->m_dat) != src) 1053 1.63 perry memmove(dst, src, left); 1054 1.39 fvdl dst += left; 1055 1.39 fvdl m1->m_len = left; 1056 1.39 fvdl m2 = m1->m_next; 1057 1.1 cgd } 1058 1.39 fvdl m1->m_flags &= ~M_PKTHDR; 1059 1.39 fvdl *cp2 = m1->m_data = m1->m_dat; /* data is at beginning of buffer */ 1060 1.39 fvdl *dposp = mtod(m1, caddr_t) + siz; 1061 1.39 fvdl /* 1062 1.39 fvdl * Loop through mbufs pulling data up into first mbuf until 1063 1.39 fvdl * the first mbuf is full or there is no more data to 1064 1.39 fvdl * pullup. 1065 1.39 fvdl */ 1066 1.39 fvdl while ((len = (MLEN - m1->m_len)) != 0 && m2) { 1067 1.39 fvdl if ((len = min(len, m2->m_len)) != 0) 1068 1.63 perry memcpy(dst, m2->m_data, len); 1069 1.39 fvdl m1->m_len += len; 1070 1.39 fvdl dst += len; 1071 1.39 fvdl m2->m_data += len; 1072 1.39 fvdl m2->m_len -= len; 1073 1.39 fvdl m2 = m2->m_next; 1074 1.39 fvdl } 1075 1.39 fvdl if (m1->m_len < siz) 1076 1.39 fvdl return (EBADRPC); 1077 1.1 cgd return (0); 1078 1.1 cgd } 1079 1.1 cgd 1080 1.1 cgd /* 1081 1.1 cgd * Advance the position in the mbuf chain. 1082 1.1 cgd */ 1083 1.24 christos int 1084 1.1 cgd nfs_adv(mdp, dposp, offs, left) 1085 1.1 cgd struct mbuf **mdp; 1086 1.1 cgd caddr_t *dposp; 1087 1.1 cgd int offs; 1088 1.1 cgd int left; 1089 1.1 cgd { 1090 1.75 augustss struct mbuf *m; 1091 1.75 augustss int s; 1092 1.1 cgd 1093 1.1 cgd m = *mdp; 1094 1.1 cgd s = left; 1095 1.1 cgd while (s < offs) { 1096 1.1 cgd offs -= s; 1097 1.1 cgd m = m->m_next; 1098 1.1 cgd if (m == NULL) 1099 1.1 cgd return (EBADRPC); 1100 1.1 cgd s = m->m_len; 1101 1.1 cgd } 1102 1.1 cgd *mdp = m; 1103 1.1 cgd *dposp = mtod(m, caddr_t)+offs; 1104 1.1 cgd return (0); 1105 1.1 cgd } 1106 1.1 cgd 1107 1.1 cgd /* 1108 1.1 cgd * Copy a string into mbufs for the hard cases... 1109 1.1 cgd */ 1110 1.24 christos int 1111 1.1 cgd nfsm_strtmbuf(mb, bpos, cp, siz) 1112 1.1 cgd struct mbuf **mb; 1113 1.1 cgd char **bpos; 1114 1.33 cgd const char *cp; 1115 1.1 cgd long siz; 1116 1.1 cgd { 1117 1.75 augustss struct mbuf *m1 = NULL, *m2; 1118 1.1 cgd long left, xfer, len, tlen; 1119 1.22 cgd u_int32_t *tl; 1120 1.1 cgd int putsize; 1121 1.1 cgd 1122 1.1 cgd putsize = 1; 1123 1.1 cgd m2 = *mb; 1124 1.12 mycroft left = M_TRAILINGSPACE(m2); 1125 1.1 cgd if (left > 0) { 1126 1.22 cgd tl = ((u_int32_t *)(*bpos)); 1127 1.1 cgd *tl++ = txdr_unsigned(siz); 1128 1.1 cgd putsize = 0; 1129 1.1 cgd left -= NFSX_UNSIGNED; 1130 1.1 cgd m2->m_len += NFSX_UNSIGNED; 1131 1.1 cgd if (left > 0) { 1132 1.63 perry memcpy((caddr_t) tl, cp, left); 1133 1.1 cgd siz -= left; 1134 1.1 cgd cp += left; 1135 1.1 cgd m2->m_len += left; 1136 1.1 cgd left = 0; 1137 1.1 cgd } 1138 1.1 cgd } 1139 1.12 mycroft /* Loop around adding mbufs */ 1140 1.1 cgd while (siz > 0) { 1141 1.1 cgd MGET(m1, M_WAIT, MT_DATA); 1142 1.1 cgd if (siz > MLEN) 1143 1.1 cgd MCLGET(m1, M_WAIT); 1144 1.1 cgd m1->m_len = NFSMSIZ(m1); 1145 1.1 cgd m2->m_next = m1; 1146 1.1 cgd m2 = m1; 1147 1.22 cgd tl = mtod(m1, u_int32_t *); 1148 1.1 cgd tlen = 0; 1149 1.1 cgd if (putsize) { 1150 1.1 cgd *tl++ = txdr_unsigned(siz); 1151 1.1 cgd m1->m_len -= NFSX_UNSIGNED; 1152 1.1 cgd tlen = NFSX_UNSIGNED; 1153 1.1 cgd putsize = 0; 1154 1.1 cgd } 1155 1.1 cgd if (siz < m1->m_len) { 1156 1.1 cgd len = nfsm_rndup(siz); 1157 1.1 cgd xfer = siz; 1158 1.1 cgd if (xfer < len) 1159 1.1 cgd *(tl+(xfer>>2)) = 0; 1160 1.1 cgd } else { 1161 1.1 cgd xfer = len = m1->m_len; 1162 1.1 cgd } 1163 1.63 perry memcpy((caddr_t) tl, cp, xfer); 1164 1.1 cgd m1->m_len = len+tlen; 1165 1.1 cgd siz -= xfer; 1166 1.1 cgd cp += xfer; 1167 1.1 cgd } 1168 1.1 cgd *mb = m1; 1169 1.1 cgd *bpos = mtod(m1, caddr_t)+m1->m_len; 1170 1.1 cgd return (0); 1171 1.1 cgd } 1172 1.1 cgd 1173 1.49 fvdl /* 1174 1.49 fvdl * Directory caching routines. They work as follows: 1175 1.49 fvdl * - a cache is maintained per VDIR nfsnode. 1176 1.49 fvdl * - for each offset cookie that is exported to userspace, and can 1177 1.49 fvdl * thus be thrown back at us as an offset to VOP_READDIR, store 1178 1.49 fvdl * information in the cache. 1179 1.49 fvdl * - cached are: 1180 1.49 fvdl * - cookie itself 1181 1.49 fvdl * - blocknumber (essentially just a search key in the buffer cache) 1182 1.49 fvdl * - entry number in block. 1183 1.49 fvdl * - offset cookie of block in which this entry is stored 1184 1.49 fvdl * - 32 bit cookie if NFSMNT_XLATECOOKIE is used. 1185 1.49 fvdl * - entries are looked up in a hash table 1186 1.49 fvdl * - also maintained is an LRU list of entries, used to determine 1187 1.49 fvdl * which ones to delete if the cache grows too large. 1188 1.49 fvdl * - if 32 <-> 64 translation mode is requested for a filesystem, 1189 1.49 fvdl * the cache also functions as a translation table 1190 1.49 fvdl * - in the translation case, invalidating the cache does not mean 1191 1.49 fvdl * flushing it, but just marking entries as invalid, except for 1192 1.49 fvdl * the <64bit cookie, 32bitcookie> pair which is still valid, to 1193 1.49 fvdl * still be able to use the cache as a translation table. 1194 1.49 fvdl * - 32 bit cookies are uniquely created by combining the hash table 1195 1.49 fvdl * entry value, and one generation count per hash table entry, 1196 1.49 fvdl * incremented each time an entry is appended to the chain. 1197 1.49 fvdl * - the cache is invalidated each time a direcory is modified 1198 1.49 fvdl * - sanity checks are also done; if an entry in a block turns 1199 1.49 fvdl * out not to have a matching cookie, the cache is invalidated 1200 1.49 fvdl * and a new block starting from the wanted offset is fetched from 1201 1.49 fvdl * the server. 1202 1.49 fvdl * - directory entries as read from the server are extended to contain 1203 1.49 fvdl * the 64bit and, optionally, the 32bit cookies, for sanity checking 1204 1.49 fvdl * the cache and exporting them to userspace through the cookie 1205 1.49 fvdl * argument to VOP_READDIR. 1206 1.49 fvdl */ 1207 1.49 fvdl 1208 1.46 fvdl u_long 1209 1.46 fvdl nfs_dirhash(off) 1210 1.46 fvdl off_t off; 1211 1.46 fvdl { 1212 1.46 fvdl int i; 1213 1.46 fvdl char *cp = (char *)&off; 1214 1.46 fvdl u_long sum = 0L; 1215 1.46 fvdl 1216 1.46 fvdl for (i = 0 ; i < sizeof (off); i++) 1217 1.46 fvdl sum += *cp++; 1218 1.46 fvdl 1219 1.46 fvdl return sum; 1220 1.46 fvdl } 1221 1.46 fvdl 1222 1.49 fvdl void 1223 1.49 fvdl nfs_initdircache(vp) 1224 1.49 fvdl struct vnode *vp; 1225 1.49 fvdl { 1226 1.49 fvdl struct nfsnode *np = VTONFS(vp); 1227 1.49 fvdl struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1228 1.49 fvdl 1229 1.49 fvdl np->n_dircachesize = 0; 1230 1.49 fvdl np->n_dblkno = 1; 1231 1.88 ad np->n_dircache = hashinit(NFS_DIRHASHSIZ, HASH_LIST, M_NFSDIROFF, 1232 1.88 ad M_WAITOK, &nfsdirhashmask); 1233 1.49 fvdl TAILQ_INIT(&np->n_dirchain); 1234 1.49 fvdl if (nmp->nm_flag & NFSMNT_XLATECOOKIE) { 1235 1.49 fvdl MALLOC(np->n_dirgens, unsigned *, 1236 1.49 fvdl NFS_DIRHASHSIZ * sizeof (unsigned), M_NFSDIROFF, 1237 1.49 fvdl M_WAITOK); 1238 1.63 perry memset((caddr_t)np->n_dirgens, 0, 1239 1.49 fvdl NFS_DIRHASHSIZ * sizeof (unsigned)); 1240 1.49 fvdl } 1241 1.49 fvdl } 1242 1.49 fvdl 1243 1.49 fvdl static struct nfsdircache dzero = {0, 0, {0, 0}, {0, 0}, 0, 0, 0}; 1244 1.46 fvdl 1245 1.46 fvdl struct nfsdircache * 1246 1.49 fvdl nfs_searchdircache(vp, off, do32, hashent) 1247 1.46 fvdl struct vnode *vp; 1248 1.46 fvdl off_t off; 1249 1.49 fvdl int do32; 1250 1.49 fvdl int *hashent; 1251 1.49 fvdl { 1252 1.49 fvdl struct nfsdirhashhead *ndhp; 1253 1.49 fvdl struct nfsdircache *ndp = NULL; 1254 1.49 fvdl struct nfsnode *np = VTONFS(vp); 1255 1.49 fvdl unsigned ent; 1256 1.49 fvdl 1257 1.49 fvdl /* 1258 1.49 fvdl * Zero is always a valid cookie. 1259 1.49 fvdl */ 1260 1.49 fvdl if (off == 0) 1261 1.49 fvdl return &dzero; 1262 1.49 fvdl 1263 1.49 fvdl /* 1264 1.49 fvdl * We use a 32bit cookie as search key, directly reconstruct 1265 1.49 fvdl * the hashentry. Else use the hashfunction. 1266 1.49 fvdl */ 1267 1.49 fvdl if (do32) { 1268 1.49 fvdl ent = (u_int32_t)off >> 24; 1269 1.49 fvdl if (ent >= NFS_DIRHASHSIZ) 1270 1.49 fvdl return NULL; 1271 1.49 fvdl ndhp = &np->n_dircache[ent]; 1272 1.49 fvdl } else { 1273 1.49 fvdl ndhp = NFSDIRHASH(np, off); 1274 1.49 fvdl } 1275 1.49 fvdl 1276 1.49 fvdl if (hashent) 1277 1.49 fvdl *hashent = (int)(ndhp - np->n_dircache); 1278 1.49 fvdl if (do32) { 1279 1.49 fvdl for (ndp = ndhp->lh_first; ndp; ndp = ndp->dc_hash.le_next) { 1280 1.49 fvdl if (ndp->dc_cookie32 == (u_int32_t)off) { 1281 1.49 fvdl /* 1282 1.49 fvdl * An invalidated entry will become the 1283 1.49 fvdl * start of a new block fetched from 1284 1.49 fvdl * the server. 1285 1.49 fvdl */ 1286 1.49 fvdl if (ndp->dc_blkno == -1) { 1287 1.49 fvdl ndp->dc_blkcookie = ndp->dc_cookie; 1288 1.49 fvdl ndp->dc_blkno = np->n_dblkno++; 1289 1.49 fvdl ndp->dc_entry = 0; 1290 1.49 fvdl } 1291 1.49 fvdl break; 1292 1.49 fvdl } 1293 1.49 fvdl } 1294 1.49 fvdl } else { 1295 1.49 fvdl for (ndp = ndhp->lh_first; ndp; ndp = ndp->dc_hash.le_next) 1296 1.49 fvdl if (ndp->dc_cookie == off) 1297 1.49 fvdl break; 1298 1.49 fvdl } 1299 1.49 fvdl return ndp; 1300 1.49 fvdl } 1301 1.49 fvdl 1302 1.49 fvdl 1303 1.49 fvdl struct nfsdircache * 1304 1.49 fvdl nfs_enterdircache(vp, off, blkoff, en, blkno) 1305 1.49 fvdl struct vnode *vp; 1306 1.49 fvdl off_t off, blkoff; 1307 1.102 jdolecek int en; 1308 1.46 fvdl daddr_t blkno; 1309 1.46 fvdl { 1310 1.46 fvdl struct nfsnode *np = VTONFS(vp); 1311 1.46 fvdl struct nfsdirhashhead *ndhp; 1312 1.49 fvdl struct nfsdircache *ndp = NULL, *first; 1313 1.49 fvdl struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1314 1.49 fvdl int hashent, gen, overwrite; 1315 1.46 fvdl 1316 1.49 fvdl if (!np->n_dircache) 1317 1.49 fvdl /* 1318 1.49 fvdl * XXX would like to do this in nfs_nget but vtype 1319 1.49 fvdl * isn't known at that time. 1320 1.49 fvdl */ 1321 1.49 fvdl nfs_initdircache(vp); 1322 1.50 fvdl 1323 1.50 fvdl /* 1324 1.50 fvdl * XXX refuse entries for offset 0. amd(8) erroneously sets 1325 1.50 fvdl * cookie 0 for the '.' entry, making this necessary. This 1326 1.50 fvdl * isn't so bad, as 0 is a special case anyway. 1327 1.50 fvdl */ 1328 1.50 fvdl if (off == 0) 1329 1.50 fvdl return &dzero; 1330 1.49 fvdl 1331 1.49 fvdl ndp = nfs_searchdircache(vp, off, 0, &hashent); 1332 1.49 fvdl 1333 1.49 fvdl if (ndp && ndp->dc_blkno != -1) { 1334 1.49 fvdl /* 1335 1.49 fvdl * Overwriting an old entry. Check if it's the same. 1336 1.49 fvdl * If so, just return. If not, remove the old entry. 1337 1.49 fvdl */ 1338 1.49 fvdl if (ndp->dc_blkcookie == blkoff && ndp->dc_entry == en) 1339 1.49 fvdl return ndp; 1340 1.49 fvdl TAILQ_REMOVE(&np->n_dirchain, ndp, dc_chain); 1341 1.49 fvdl LIST_REMOVE(ndp, dc_hash); 1342 1.49 fvdl FREE(ndp, M_NFSDIROFF); 1343 1.49 fvdl ndp = 0; 1344 1.46 fvdl } 1345 1.46 fvdl 1346 1.49 fvdl ndhp = &np->n_dircache[hashent]; 1347 1.46 fvdl 1348 1.49 fvdl if (!ndp) { 1349 1.49 fvdl MALLOC(ndp, struct nfsdircache *, sizeof (*ndp), M_NFSDIROFF, 1350 1.49 fvdl M_WAITOK); 1351 1.49 fvdl overwrite = 0; 1352 1.49 fvdl if (nmp->nm_flag & NFSMNT_XLATECOOKIE) { 1353 1.49 fvdl /* 1354 1.49 fvdl * We're allocating a new entry, so bump the 1355 1.49 fvdl * generation number. 1356 1.49 fvdl */ 1357 1.49 fvdl gen = ++np->n_dirgens[hashent]; 1358 1.49 fvdl if (gen == 0) { 1359 1.49 fvdl np->n_dirgens[hashent]++; 1360 1.49 fvdl gen++; 1361 1.49 fvdl } 1362 1.49 fvdl ndp->dc_cookie32 = (hashent << 24) | (gen & 0xffffff); 1363 1.49 fvdl } 1364 1.49 fvdl } else 1365 1.49 fvdl overwrite = 1; 1366 1.46 fvdl 1367 1.46 fvdl /* 1368 1.46 fvdl * If the entry number is 0, we are at the start of a new block, so 1369 1.46 fvdl * allocate a new blocknumber. 1370 1.46 fvdl */ 1371 1.46 fvdl if (en == 0) 1372 1.46 fvdl ndp->dc_blkno = np->n_dblkno++; 1373 1.46 fvdl else 1374 1.46 fvdl ndp->dc_blkno = blkno; 1375 1.49 fvdl 1376 1.49 fvdl ndp->dc_cookie = off; 1377 1.49 fvdl ndp->dc_blkcookie = blkoff; 1378 1.46 fvdl ndp->dc_entry = en; 1379 1.46 fvdl 1380 1.49 fvdl if (overwrite) 1381 1.49 fvdl return ndp; 1382 1.49 fvdl 1383 1.46 fvdl /* 1384 1.46 fvdl * If the maximum directory cookie cache size has been reached 1385 1.46 fvdl * for this node, take one off the front. The idea is that 1386 1.46 fvdl * directories are typically read front-to-back once, so that 1387 1.46 fvdl * the oldest entries can be thrown away without much performance 1388 1.46 fvdl * loss. 1389 1.46 fvdl */ 1390 1.46 fvdl if (np->n_dircachesize == NFS_MAXDIRCACHE) { 1391 1.46 fvdl first = np->n_dirchain.tqh_first; 1392 1.46 fvdl TAILQ_REMOVE(&np->n_dirchain, first, dc_chain); 1393 1.46 fvdl LIST_REMOVE(first, dc_hash); 1394 1.46 fvdl FREE(first, M_NFSDIROFF); 1395 1.46 fvdl } else 1396 1.46 fvdl np->n_dircachesize++; 1397 1.46 fvdl 1398 1.46 fvdl LIST_INSERT_HEAD(ndhp, ndp, dc_hash); 1399 1.46 fvdl TAILQ_INSERT_TAIL(&np->n_dirchain, ndp, dc_chain); 1400 1.46 fvdl return ndp; 1401 1.46 fvdl } 1402 1.46 fvdl 1403 1.46 fvdl void 1404 1.49 fvdl nfs_invaldircache(vp, forcefree) 1405 1.46 fvdl struct vnode *vp; 1406 1.49 fvdl int forcefree; 1407 1.46 fvdl { 1408 1.46 fvdl struct nfsnode *np = VTONFS(vp); 1409 1.46 fvdl struct nfsdircache *ndp = NULL; 1410 1.49 fvdl struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1411 1.46 fvdl 1412 1.46 fvdl #ifdef DIAGNOSTIC 1413 1.46 fvdl if (vp->v_type != VDIR) 1414 1.46 fvdl panic("nfs: invaldircache: not dir"); 1415 1.46 fvdl #endif 1416 1.46 fvdl 1417 1.46 fvdl if (!np->n_dircache) 1418 1.46 fvdl return; 1419 1.46 fvdl 1420 1.49 fvdl if (!(nmp->nm_flag & NFSMNT_XLATECOOKIE) || forcefree) { 1421 1.49 fvdl while ((ndp = np->n_dirchain.tqh_first)) { 1422 1.49 fvdl TAILQ_REMOVE(&np->n_dirchain, ndp, dc_chain); 1423 1.49 fvdl LIST_REMOVE(ndp, dc_hash); 1424 1.49 fvdl FREE(ndp, M_NFSDIROFF); 1425 1.49 fvdl } 1426 1.49 fvdl np->n_dircachesize = 0; 1427 1.49 fvdl if (forcefree && np->n_dirgens) { 1428 1.49 fvdl FREE(np->n_dirgens, M_NFSDIROFF); 1429 1.49 fvdl } 1430 1.49 fvdl } else { 1431 1.49 fvdl for (ndp = np->n_dirchain.tqh_first; ndp; 1432 1.49 fvdl ndp = ndp->dc_chain.tqe_next) 1433 1.49 fvdl ndp->dc_blkno = -1; 1434 1.46 fvdl } 1435 1.46 fvdl 1436 1.49 fvdl np->n_dblkno = 1; 1437 1.46 fvdl } 1438 1.46 fvdl 1439 1.1 cgd /* 1440 1.35 thorpej * Called once before VFS init to initialize shared and 1441 1.35 thorpej * server-specific data structures. 1442 1.1 cgd */ 1443 1.24 christos void 1444 1.1 cgd nfs_init() 1445 1.1 cgd { 1446 1.12 mycroft nfsrtt.pos = 0; 1447 1.1 cgd rpc_vers = txdr_unsigned(RPC_VER2); 1448 1.1 cgd rpc_call = txdr_unsigned(RPC_CALL); 1449 1.1 cgd rpc_reply = txdr_unsigned(RPC_REPLY); 1450 1.1 cgd rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 1451 1.1 cgd rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 1452 1.1 cgd rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 1453 1.12 mycroft rpc_autherr = txdr_unsigned(RPC_AUTHERR); 1454 1.1 cgd rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 1455 1.25 fvdl rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 1456 1.1 cgd nfs_prog = txdr_unsigned(NFS_PROG); 1457 1.25 fvdl nqnfs_prog = txdr_unsigned(NQNFS_PROG); 1458 1.1 cgd nfs_true = txdr_unsigned(TRUE); 1459 1.1 cgd nfs_false = txdr_unsigned(FALSE); 1460 1.12 mycroft nfs_xdrneg1 = txdr_unsigned(-1); 1461 1.25 fvdl nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 1462 1.25 fvdl if (nfs_ticks < 1) 1463 1.25 fvdl nfs_ticks = 1; 1464 1.2 glass #ifdef NFSSERVER 1465 1.12 mycroft nfsrv_init(0); /* Init server data structures */ 1466 1.1 cgd nfsrv_initcache(); /* Init the server request cache */ 1467 1.36 fvdl #endif /* NFSSERVER */ 1468 1.12 mycroft 1469 1.84 bjh21 #if defined(NFSSERVER) || !defined(NFS_V2_ONLY) 1470 1.12 mycroft /* 1471 1.37 fvdl * Initialize the nqnfs data structures. 1472 1.12 mycroft */ 1473 1.12 mycroft if (nqnfsstarttime == 0) { 1474 1.12 mycroft nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease 1475 1.12 mycroft + nqsrv_clockskew + nqsrv_writeslack; 1476 1.12 mycroft NQLOADNOVRAM(nqnfsstarttime); 1477 1.18 mycroft CIRCLEQ_INIT(&nqtimerhead); 1478 1.88 ad nqfhhashtbl = hashinit(NQLCHSZ, HASH_LIST, M_NQLEASE, 1479 1.88 ad M_WAITOK, &nqfhhash); 1480 1.12 mycroft } 1481 1.84 bjh21 #endif 1482 1.103 christos 1483 1.103 christos exithook_establish(nfs_exit, NULL); 1484 1.12 mycroft 1485 1.1 cgd /* 1486 1.1 cgd * Initialize reply list and start timer 1487 1.1 cgd */ 1488 1.16 mycroft TAILQ_INIT(&nfs_reqq); 1489 1.24 christos nfs_timer(NULL); 1490 1.1 cgd } 1491 1.1 cgd 1492 1.38 thorpej #ifdef NFS 1493 1.35 thorpej /* 1494 1.35 thorpej * Called once at VFS init to initialize client-specific data structures. 1495 1.35 thorpej */ 1496 1.35 thorpej void 1497 1.35 thorpej nfs_vfs_init() 1498 1.35 thorpej { 1499 1.96 chs nfs_nhinit(); /* Init the nfsnode table */ 1500 1.100 chs nfs_commitsize = uvmexp.npages << (PAGE_SHIFT - 4); 1501 1.96 chs } 1502 1.35 thorpej 1503 1.96 chs void 1504 1.96 chs nfs_vfs_reinit() 1505 1.96 chs { 1506 1.96 chs nfs_nhreinit(); 1507 1.73 jdolecek } 1508 1.73 jdolecek 1509 1.73 jdolecek void 1510 1.73 jdolecek nfs_vfs_done() 1511 1.73 jdolecek { 1512 1.73 jdolecek nfs_nhdone(); 1513 1.35 thorpej } 1514 1.35 thorpej 1515 1.1 cgd /* 1516 1.12 mycroft * Attribute cache routines. 1517 1.12 mycroft * nfs_loadattrcache() - loads or updates the cache contents from attributes 1518 1.12 mycroft * that are on the mbuf list 1519 1.12 mycroft * nfs_getattrcache() - returns valid attributes if found in cache, returns 1520 1.12 mycroft * error otherwise 1521 1.1 cgd */ 1522 1.12 mycroft 1523 1.12 mycroft /* 1524 1.12 mycroft * Load the attribute cache (that lives in the nfsnode entry) with 1525 1.12 mycroft * the values on the mbuf list and 1526 1.12 mycroft * Iff vap not NULL 1527 1.12 mycroft * copy the attributes to *vaper 1528 1.12 mycroft */ 1529 1.24 christos int 1530 1.105 yamt nfsm_loadattrcache(vpp, mdp, dposp, vaper, flags) 1531 1.12 mycroft struct vnode **vpp; 1532 1.12 mycroft struct mbuf **mdp; 1533 1.12 mycroft caddr_t *dposp; 1534 1.12 mycroft struct vattr *vaper; 1535 1.105 yamt int flags; 1536 1.1 cgd { 1537 1.75 augustss int32_t t1; 1538 1.25 fvdl caddr_t cp2; 1539 1.25 fvdl int error = 0; 1540 1.12 mycroft struct mbuf *md; 1541 1.45 fvdl int v3 = NFS_ISV3(*vpp); 1542 1.1 cgd 1543 1.12 mycroft md = *mdp; 1544 1.25 fvdl t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 1545 1.25 fvdl error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2); 1546 1.24 christos if (error) 1547 1.12 mycroft return (error); 1548 1.105 yamt return nfs_loadattrcache(vpp, (struct nfs_fattr *)cp2, vaper, flags); 1549 1.45 fvdl } 1550 1.45 fvdl 1551 1.45 fvdl int 1552 1.105 yamt nfs_loadattrcache(vpp, fp, vaper, flags) 1553 1.45 fvdl struct vnode **vpp; 1554 1.45 fvdl struct nfs_fattr *fp; 1555 1.45 fvdl struct vattr *vaper; 1556 1.105 yamt int flags; 1557 1.45 fvdl { 1558 1.75 augustss struct vnode *vp = *vpp; 1559 1.75 augustss struct vattr *vap; 1560 1.45 fvdl int v3 = NFS_ISV3(vp); 1561 1.45 fvdl enum vtype vtyp; 1562 1.45 fvdl u_short vmode; 1563 1.45 fvdl struct timespec mtime; 1564 1.45 fvdl struct vnode *nvp; 1565 1.45 fvdl int32_t rdev; 1566 1.75 augustss struct nfsnode *np; 1567 1.45 fvdl extern int (**spec_nfsv2nodeop_p) __P((void *)); 1568 1.101 fvdl uid_t uid; 1569 1.101 fvdl gid_t gid; 1570 1.45 fvdl 1571 1.25 fvdl if (v3) { 1572 1.25 fvdl vtyp = nfsv3tov_type(fp->fa_type); 1573 1.25 fvdl vmode = fxdr_unsigned(u_short, fp->fa_mode); 1574 1.71 is rdev = makedev(fxdr_unsigned(u_int32_t, fp->fa3_rdev.specdata1), 1575 1.71 is fxdr_unsigned(u_int32_t, fp->fa3_rdev.specdata2)); 1576 1.25 fvdl fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 1577 1.12 mycroft } else { 1578 1.25 fvdl vtyp = nfsv2tov_type(fp->fa_type); 1579 1.25 fvdl vmode = fxdr_unsigned(u_short, fp->fa_mode); 1580 1.25 fvdl if (vtyp == VNON || vtyp == VREG) 1581 1.25 fvdl vtyp = IFTOVT(vmode); 1582 1.25 fvdl rdev = fxdr_unsigned(int32_t, fp->fa2_rdev); 1583 1.25 fvdl fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 1584 1.25 fvdl 1585 1.25 fvdl /* 1586 1.25 fvdl * Really ugly NFSv2 kludge. 1587 1.25 fvdl */ 1588 1.25 fvdl if (vtyp == VCHR && rdev == 0xffffffff) 1589 1.25 fvdl vtyp = VFIFO; 1590 1.12 mycroft } 1591 1.25 fvdl 1592 1.101 fvdl vmode &= ALLPERMS; 1593 1.101 fvdl 1594 1.12 mycroft /* 1595 1.12 mycroft * If v_type == VNON it is a new node, so fill in the v_type, 1596 1.12 mycroft * n_mtime fields. Check to see if it represents a special 1597 1.12 mycroft * device, and if so, check for a possible alias. Once the 1598 1.12 mycroft * correct vnode has been obtained, fill in the rest of the 1599 1.12 mycroft * information. 1600 1.12 mycroft */ 1601 1.12 mycroft np = VTONFS(vp); 1602 1.87 fvdl if (vp->v_type == VNON) { 1603 1.25 fvdl vp->v_type = vtyp; 1604 1.12 mycroft if (vp->v_type == VFIFO) { 1605 1.24 christos extern int (**fifo_nfsv2nodeop_p) __P((void *)); 1606 1.12 mycroft vp->v_op = fifo_nfsv2nodeop_p; 1607 1.12 mycroft } 1608 1.12 mycroft if (vp->v_type == VCHR || vp->v_type == VBLK) { 1609 1.12 mycroft vp->v_op = spec_nfsv2nodeop_p; 1610 1.24 christos nvp = checkalias(vp, (dev_t)rdev, vp->v_mount); 1611 1.24 christos if (nvp) { 1612 1.12 mycroft /* 1613 1.12 mycroft * Discard unneeded vnode, but save its nfsnode. 1614 1.25 fvdl * Since the nfsnode does not have a lock, its 1615 1.25 fvdl * vnode lock has to be carried over. 1616 1.12 mycroft */ 1617 1.94 bjh21 /* 1618 1.94 bjh21 * XXX is the old node sure to be locked here? 1619 1.94 bjh21 */ 1620 1.94 bjh21 KASSERT(lockstatus(&vp->v_lock) == 1621 1.94 bjh21 LK_EXCLUSIVE); 1622 1.12 mycroft nvp->v_data = vp->v_data; 1623 1.12 mycroft vp->v_data = NULL; 1624 1.93 fvdl VOP_UNLOCK(vp, 0); 1625 1.12 mycroft vp->v_op = spec_vnodeop_p; 1626 1.93 fvdl vrele(vp); 1627 1.12 mycroft vgone(vp); 1628 1.94 bjh21 lockmgr(&nvp->v_lock, LK_EXCLUSIVE, 1629 1.94 bjh21 &nvp->v_interlock); 1630 1.12 mycroft /* 1631 1.12 mycroft * Reinitialize aliased node. 1632 1.12 mycroft */ 1633 1.12 mycroft np->n_vnode = nvp; 1634 1.12 mycroft *vpp = vp = nvp; 1635 1.12 mycroft } 1636 1.12 mycroft } 1637 1.23 jtc np->n_mtime = mtime.tv_sec; 1638 1.12 mycroft } 1639 1.101 fvdl uid = fxdr_unsigned(uid_t, fp->fa_uid); 1640 1.101 fvdl gid = fxdr_unsigned(gid_t, fp->fa_gid); 1641 1.49 fvdl vap = np->n_vattr; 1642 1.101 fvdl 1643 1.101 fvdl /* 1644 1.101 fvdl * Invalidate access cache if uid, gid or mode changed. 1645 1.101 fvdl */ 1646 1.101 fvdl if (np->n_accstamp != -1 && 1647 1.101 fvdl (gid != vap->va_gid || uid != vap->va_uid || vmode != vap->va_mode)) 1648 1.101 fvdl np->n_accstamp = -1; 1649 1.101 fvdl 1650 1.12 mycroft vap->va_type = vtyp; 1651 1.101 fvdl vap->va_mode = vmode; 1652 1.12 mycroft vap->va_rdev = (dev_t)rdev; 1653 1.12 mycroft vap->va_mtime = mtime; 1654 1.12 mycroft vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 1655 1.72 fvdl switch (vtyp) { 1656 1.72 fvdl case VDIR: 1657 1.72 fvdl vap->va_blocksize = NFS_DIRFRAGSIZ; 1658 1.72 fvdl break; 1659 1.72 fvdl case VBLK: 1660 1.72 fvdl vap->va_blocksize = BLKDEV_IOSIZE; 1661 1.72 fvdl break; 1662 1.72 fvdl case VCHR: 1663 1.72 fvdl vap->va_blocksize = MAXBSIZE; 1664 1.72 fvdl break; 1665 1.72 fvdl default: 1666 1.72 fvdl vap->va_blocksize = v3 ? vp->v_mount->mnt_stat.f_iosize : 1667 1.72 fvdl fxdr_unsigned(int32_t, fp->fa2_blocksize); 1668 1.72 fvdl break; 1669 1.72 fvdl } 1670 1.25 fvdl if (v3) { 1671 1.25 fvdl vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1672 1.101 fvdl vap->va_uid = uid; 1673 1.101 fvdl vap->va_gid = gid; 1674 1.66 fair vap->va_size = fxdr_hyper(&fp->fa3_size); 1675 1.66 fair vap->va_bytes = fxdr_hyper(&fp->fa3_used); 1676 1.25 fvdl vap->va_fileid = fxdr_unsigned(int32_t, 1677 1.25 fvdl fp->fa3_fileid.nfsuquad[1]); 1678 1.25 fvdl fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 1679 1.25 fvdl fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime); 1680 1.25 fvdl vap->va_flags = 0; 1681 1.25 fvdl vap->va_filerev = 0; 1682 1.12 mycroft } else { 1683 1.25 fvdl vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1684 1.101 fvdl vap->va_uid = uid; 1685 1.101 fvdl vap->va_gid = gid; 1686 1.25 fvdl vap->va_size = fxdr_unsigned(u_int32_t, fp->fa2_size); 1687 1.25 fvdl vap->va_bytes = fxdr_unsigned(int32_t, fp->fa2_blocks) 1688 1.25 fvdl * NFS_FABLKSIZE; 1689 1.25 fvdl vap->va_fileid = fxdr_unsigned(int32_t, fp->fa2_fileid); 1690 1.25 fvdl fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 1691 1.12 mycroft vap->va_flags = 0; 1692 1.25 fvdl vap->va_ctime.tv_sec = fxdr_unsigned(u_int32_t, 1693 1.25 fvdl fp->fa2_ctime.nfsv2_sec); 1694 1.25 fvdl vap->va_ctime.tv_nsec = 0; 1695 1.25 fvdl vap->va_gen = fxdr_unsigned(u_int32_t,fp->fa2_ctime.nfsv2_usec); 1696 1.12 mycroft vap->va_filerev = 0; 1697 1.12 mycroft } 1698 1.12 mycroft if (vap->va_size != np->n_size) { 1699 1.89 chs if ((np->n_flag & NMODIFIED) && vap->va_size < np->n_size) { 1700 1.89 chs vap->va_size = np->n_size; 1701 1.89 chs } else { 1702 1.12 mycroft np->n_size = vap->va_size; 1703 1.89 chs if (vap->va_type == VREG) { 1704 1.105 yamt if ((flags & NAC_NOTRUNC) 1705 1.105 yamt && np->n_size < vp->v_size) { 1706 1.105 yamt /* 1707 1.105 yamt * we can't free pages now because 1708 1.105 yamt * the pages can be owned by ourselves. 1709 1.105 yamt */ 1710 1.105 yamt np->n_flag |= NTRUNCDELAYED; 1711 1.105 yamt } 1712 1.105 yamt else { 1713 1.105 yamt uvm_vnp_setsize(vp, np->n_size); 1714 1.105 yamt } 1715 1.89 chs } 1716 1.89 chs } 1717 1.12 mycroft } 1718 1.12 mycroft np->n_attrstamp = time.tv_sec; 1719 1.12 mycroft if (vaper != NULL) { 1720 1.63 perry memcpy((caddr_t)vaper, (caddr_t)vap, sizeof(*vap)); 1721 1.12 mycroft if (np->n_flag & NCHG) { 1722 1.25 fvdl if (np->n_flag & NACC) 1723 1.25 fvdl vaper->va_atime = np->n_atim; 1724 1.25 fvdl if (np->n_flag & NUPD) 1725 1.25 fvdl vaper->va_mtime = np->n_mtim; 1726 1.12 mycroft } 1727 1.12 mycroft } 1728 1.12 mycroft return (0); 1729 1.12 mycroft } 1730 1.12 mycroft 1731 1.12 mycroft /* 1732 1.12 mycroft * Check the time stamp 1733 1.12 mycroft * If the cache is valid, copy contents to *vap and return 0 1734 1.12 mycroft * otherwise return an error 1735 1.12 mycroft */ 1736 1.24 christos int 1737 1.12 mycroft nfs_getattrcache(vp, vaper) 1738 1.75 augustss struct vnode *vp; 1739 1.12 mycroft struct vattr *vaper; 1740 1.12 mycroft { 1741 1.75 augustss struct nfsnode *np = VTONFS(vp); 1742 1.75 augustss struct vattr *vap; 1743 1.12 mycroft 1744 1.25 fvdl if ((time.tv_sec - np->n_attrstamp) >= NFS_ATTRTIMEO(np)) { 1745 1.12 mycroft nfsstats.attrcache_misses++; 1746 1.12 mycroft return (ENOENT); 1747 1.12 mycroft } 1748 1.12 mycroft nfsstats.attrcache_hits++; 1749 1.49 fvdl vap = np->n_vattr; 1750 1.12 mycroft if (vap->va_size != np->n_size) { 1751 1.12 mycroft if (vap->va_type == VREG) { 1752 1.12 mycroft if (np->n_flag & NMODIFIED) { 1753 1.12 mycroft if (vap->va_size < np->n_size) 1754 1.12 mycroft vap->va_size = np->n_size; 1755 1.12 mycroft else 1756 1.12 mycroft np->n_size = vap->va_size; 1757 1.12 mycroft } else 1758 1.12 mycroft np->n_size = vap->va_size; 1759 1.51 mrg uvm_vnp_setsize(vp, np->n_size); 1760 1.12 mycroft } else 1761 1.12 mycroft np->n_size = vap->va_size; 1762 1.12 mycroft } 1763 1.63 perry memcpy((caddr_t)vaper, (caddr_t)vap, sizeof(struct vattr)); 1764 1.12 mycroft if (np->n_flag & NCHG) { 1765 1.25 fvdl if (np->n_flag & NACC) 1766 1.25 fvdl vaper->va_atime = np->n_atim; 1767 1.25 fvdl if (np->n_flag & NUPD) 1768 1.25 fvdl vaper->va_mtime = np->n_mtim; 1769 1.1 cgd } 1770 1.12 mycroft return (0); 1771 1.105 yamt } 1772 1.105 yamt 1773 1.105 yamt void 1774 1.105 yamt nfs_delayedtruncate(vp) 1775 1.105 yamt struct vnode *vp; 1776 1.105 yamt { 1777 1.105 yamt struct nfsnode *np = VTONFS(vp); 1778 1.105 yamt 1779 1.105 yamt if (np->n_flag & NTRUNCDELAYED) { 1780 1.105 yamt np->n_flag &= ~NTRUNCDELAYED; 1781 1.105 yamt uvm_vnp_setsize(vp, np->n_size); 1782 1.105 yamt } 1783 1.1 cgd } 1784 1.48 fvdl 1785 1.48 fvdl /* 1786 1.48 fvdl * Heuristic to see if the server XDR encodes directory cookies or not. 1787 1.48 fvdl * it is not supposed to, but a lot of servers may do this. Also, since 1788 1.48 fvdl * most/all servers will implement V2 as well, it is expected that they 1789 1.48 fvdl * may return just 32 bits worth of cookie information, so we need to 1790 1.48 fvdl * find out in which 32 bits this information is available. We do this 1791 1.48 fvdl * to avoid trouble with emulated binaries that can't handle 64 bit 1792 1.48 fvdl * directory offsets. 1793 1.48 fvdl */ 1794 1.48 fvdl 1795 1.48 fvdl void 1796 1.48 fvdl nfs_cookieheuristic(vp, flagp, p, cred) 1797 1.48 fvdl struct vnode *vp; 1798 1.48 fvdl int *flagp; 1799 1.48 fvdl struct proc *p; 1800 1.48 fvdl struct ucred *cred; 1801 1.48 fvdl { 1802 1.48 fvdl struct uio auio; 1803 1.48 fvdl struct iovec aiov; 1804 1.48 fvdl caddr_t buf, cp; 1805 1.48 fvdl struct dirent *dp; 1806 1.57 fvdl off_t *cookies = NULL, *cop; 1807 1.48 fvdl int error, eof, nc, len; 1808 1.48 fvdl 1809 1.48 fvdl MALLOC(buf, caddr_t, NFS_DIRFRAGSIZ, M_TEMP, M_WAITOK); 1810 1.48 fvdl 1811 1.48 fvdl aiov.iov_base = buf; 1812 1.48 fvdl aiov.iov_len = NFS_DIRFRAGSIZ; 1813 1.48 fvdl auio.uio_iov = &aiov; 1814 1.48 fvdl auio.uio_iovcnt = 1; 1815 1.48 fvdl auio.uio_rw = UIO_READ; 1816 1.48 fvdl auio.uio_segflg = UIO_SYSSPACE; 1817 1.48 fvdl auio.uio_procp = p; 1818 1.48 fvdl auio.uio_resid = NFS_DIRFRAGSIZ; 1819 1.48 fvdl auio.uio_offset = 0; 1820 1.48 fvdl 1821 1.56 fvdl error = VOP_READDIR(vp, &auio, cred, &eof, &cookies, &nc); 1822 1.48 fvdl 1823 1.48 fvdl len = NFS_DIRFRAGSIZ - auio.uio_resid; 1824 1.48 fvdl if (error || len == 0) { 1825 1.48 fvdl FREE(buf, M_TEMP); 1826 1.57 fvdl if (cookies) 1827 1.80 thorpej free(cookies, M_TEMP); 1828 1.48 fvdl return; 1829 1.48 fvdl } 1830 1.48 fvdl 1831 1.48 fvdl /* 1832 1.48 fvdl * Find the first valid entry and look at its offset cookie. 1833 1.48 fvdl */ 1834 1.48 fvdl 1835 1.48 fvdl cp = buf; 1836 1.48 fvdl for (cop = cookies; len > 0; len -= dp->d_reclen) { 1837 1.48 fvdl dp = (struct dirent *)cp; 1838 1.48 fvdl if (dp->d_fileno != 0 && len >= dp->d_reclen) { 1839 1.48 fvdl if ((*cop >> 32) != 0 && (*cop & 0xffffffffLL) == 0) { 1840 1.48 fvdl *flagp |= NFSMNT_SWAPCOOKIE; 1841 1.49 fvdl nfs_invaldircache(vp, 0); 1842 1.48 fvdl nfs_vinvalbuf(vp, 0, cred, p, 1); 1843 1.48 fvdl } 1844 1.48 fvdl break; 1845 1.48 fvdl } 1846 1.48 fvdl cop++; 1847 1.48 fvdl cp += dp->d_reclen; 1848 1.48 fvdl } 1849 1.48 fvdl 1850 1.48 fvdl FREE(buf, M_TEMP); 1851 1.80 thorpej free(cookies, M_TEMP); 1852 1.48 fvdl } 1853 1.38 thorpej #endif /* NFS */ 1854 1.1 cgd 1855 1.1 cgd /* 1856 1.43 fvdl * Set up nameidata for a lookup() call and do it. 1857 1.43 fvdl * 1858 1.43 fvdl * If pubflag is set, this call is done for a lookup operation on the 1859 1.43 fvdl * public filehandle. In that case we allow crossing mountpoints and 1860 1.43 fvdl * absolute pathnames. However, the caller is expected to check that 1861 1.43 fvdl * the lookup result is within the public fs, and deny access if 1862 1.43 fvdl * it is not. 1863 1.1 cgd */ 1864 1.24 christos int 1865 1.43 fvdl nfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag, pubflag) 1866 1.75 augustss struct nameidata *ndp; 1867 1.1 cgd fhandle_t *fhp; 1868 1.1 cgd int len; 1869 1.12 mycroft struct nfssvc_sock *slp; 1870 1.12 mycroft struct mbuf *nam; 1871 1.1 cgd struct mbuf **mdp; 1872 1.1 cgd caddr_t *dposp; 1873 1.25 fvdl struct vnode **retdirp; 1874 1.1 cgd struct proc *p; 1875 1.43 fvdl int kerbflag, pubflag; 1876 1.1 cgd { 1877 1.75 augustss int i, rem; 1878 1.75 augustss struct mbuf *md; 1879 1.75 augustss char *fromcp, *tocp, *cp; 1880 1.43 fvdl struct iovec aiov; 1881 1.43 fvdl struct uio auio; 1882 1.1 cgd struct vnode *dp; 1883 1.43 fvdl int error, rdonly, linklen; 1884 1.12 mycroft struct componentname *cnp = &ndp->ni_cnd; 1885 1.1 cgd 1886 1.25 fvdl *retdirp = (struct vnode *)0; 1887 1.81 thorpej 1888 1.81 thorpej if ((len + 1) > MAXPATHLEN) 1889 1.81 thorpej return (ENAMETOOLONG); 1890 1.81 thorpej cnp->cn_pnbuf = PNBUF_GET(); 1891 1.81 thorpej 1892 1.1 cgd /* 1893 1.1 cgd * Copy the name from the mbuf list to ndp->ni_pnbuf 1894 1.1 cgd * and set the various ndp fields appropriately. 1895 1.1 cgd */ 1896 1.1 cgd fromcp = *dposp; 1897 1.12 mycroft tocp = cnp->cn_pnbuf; 1898 1.1 cgd md = *mdp; 1899 1.1 cgd rem = mtod(md, caddr_t) + md->m_len - fromcp; 1900 1.1 cgd for (i = 0; i < len; i++) { 1901 1.1 cgd while (rem == 0) { 1902 1.1 cgd md = md->m_next; 1903 1.1 cgd if (md == NULL) { 1904 1.1 cgd error = EBADRPC; 1905 1.1 cgd goto out; 1906 1.1 cgd } 1907 1.1 cgd fromcp = mtod(md, caddr_t); 1908 1.1 cgd rem = md->m_len; 1909 1.1 cgd } 1910 1.43 fvdl if (*fromcp == '\0' || (!pubflag && *fromcp == '/')) { 1911 1.25 fvdl error = EACCES; 1912 1.1 cgd goto out; 1913 1.1 cgd } 1914 1.1 cgd *tocp++ = *fromcp++; 1915 1.1 cgd rem--; 1916 1.1 cgd } 1917 1.1 cgd *tocp = '\0'; 1918 1.1 cgd *mdp = md; 1919 1.1 cgd *dposp = fromcp; 1920 1.1 cgd len = nfsm_rndup(len)-len; 1921 1.1 cgd if (len > 0) { 1922 1.1 cgd if (rem >= len) 1923 1.1 cgd *dposp += len; 1924 1.24 christos else if ((error = nfs_adv(mdp, dposp, len, rem)) != 0) 1925 1.1 cgd goto out; 1926 1.1 cgd } 1927 1.43 fvdl 1928 1.1 cgd /* 1929 1.1 cgd * Extract and set starting directory. 1930 1.1 cgd */ 1931 1.24 christos error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp, 1932 1.43 fvdl nam, &rdonly, kerbflag, pubflag); 1933 1.24 christos if (error) 1934 1.1 cgd goto out; 1935 1.1 cgd if (dp->v_type != VDIR) { 1936 1.1 cgd vrele(dp); 1937 1.1 cgd error = ENOTDIR; 1938 1.1 cgd goto out; 1939 1.1 cgd } 1940 1.43 fvdl 1941 1.43 fvdl if (rdonly) 1942 1.43 fvdl cnp->cn_flags |= RDONLY; 1943 1.43 fvdl 1944 1.43 fvdl *retdirp = dp; 1945 1.43 fvdl 1946 1.43 fvdl if (pubflag) { 1947 1.43 fvdl /* 1948 1.43 fvdl * Oh joy. For WebNFS, handle those pesky '%' escapes, 1949 1.43 fvdl * and the 'native path' indicator. 1950 1.43 fvdl */ 1951 1.81 thorpej cp = PNBUF_GET(); 1952 1.43 fvdl fromcp = cnp->cn_pnbuf; 1953 1.43 fvdl tocp = cp; 1954 1.43 fvdl if ((unsigned char)*fromcp >= WEBNFS_SPECCHAR_START) { 1955 1.43 fvdl switch ((unsigned char)*fromcp) { 1956 1.43 fvdl case WEBNFS_NATIVE_CHAR: 1957 1.43 fvdl /* 1958 1.43 fvdl * 'Native' path for us is the same 1959 1.43 fvdl * as a path according to the NFS spec, 1960 1.43 fvdl * just skip the escape char. 1961 1.43 fvdl */ 1962 1.43 fvdl fromcp++; 1963 1.43 fvdl break; 1964 1.43 fvdl /* 1965 1.43 fvdl * More may be added in the future, range 0x80-0xff 1966 1.43 fvdl */ 1967 1.43 fvdl default: 1968 1.43 fvdl error = EIO; 1969 1.104 enami PNBUF_PUT(cp); 1970 1.43 fvdl goto out; 1971 1.43 fvdl } 1972 1.43 fvdl } 1973 1.43 fvdl /* 1974 1.43 fvdl * Translate the '%' escapes, URL-style. 1975 1.43 fvdl */ 1976 1.43 fvdl while (*fromcp != '\0') { 1977 1.43 fvdl if (*fromcp == WEBNFS_ESC_CHAR) { 1978 1.43 fvdl if (fromcp[1] != '\0' && fromcp[2] != '\0') { 1979 1.43 fvdl fromcp++; 1980 1.43 fvdl *tocp++ = HEXSTRTOI(fromcp); 1981 1.43 fvdl fromcp += 2; 1982 1.43 fvdl continue; 1983 1.43 fvdl } else { 1984 1.43 fvdl error = ENOENT; 1985 1.104 enami PNBUF_PUT(cp); 1986 1.43 fvdl goto out; 1987 1.43 fvdl } 1988 1.43 fvdl } else 1989 1.43 fvdl *tocp++ = *fromcp++; 1990 1.43 fvdl } 1991 1.43 fvdl *tocp = '\0'; 1992 1.81 thorpej PNBUF_PUT(cnp->cn_pnbuf); 1993 1.43 fvdl cnp->cn_pnbuf = cp; 1994 1.43 fvdl } 1995 1.43 fvdl 1996 1.43 fvdl ndp->ni_pathlen = (tocp - cnp->cn_pnbuf) + 1; 1997 1.43 fvdl ndp->ni_segflg = UIO_SYSSPACE; 1998 1.98 fvdl ndp->ni_rootdir = rootvnode; 1999 1.43 fvdl 2000 1.43 fvdl if (pubflag) { 2001 1.43 fvdl ndp->ni_loopcnt = 0; 2002 1.43 fvdl if (cnp->cn_pnbuf[0] == '/') 2003 1.43 fvdl dp = rootvnode; 2004 1.43 fvdl } else { 2005 1.43 fvdl cnp->cn_flags |= NOCROSSMOUNT; 2006 1.43 fvdl } 2007 1.43 fvdl 2008 1.43 fvdl cnp->cn_proc = p; 2009 1.25 fvdl VREF(dp); 2010 1.43 fvdl 2011 1.43 fvdl for (;;) { 2012 1.43 fvdl cnp->cn_nameptr = cnp->cn_pnbuf; 2013 1.1 cgd ndp->ni_startdir = dp; 2014 1.1 cgd /* 2015 1.1 cgd * And call lookup() to do the real work 2016 1.1 cgd */ 2017 1.25 fvdl error = lookup(ndp); 2018 1.91 fvdl if (error) { 2019 1.91 fvdl PNBUF_PUT(cnp->cn_pnbuf); 2020 1.91 fvdl return (error); 2021 1.91 fvdl } 2022 1.1 cgd /* 2023 1.1 cgd * Check for encountering a symbolic link 2024 1.1 cgd */ 2025 1.43 fvdl if ((cnp->cn_flags & ISSYMLINK) == 0) { 2026 1.91 fvdl if (cnp->cn_flags & (SAVENAME | SAVESTART)) 2027 1.43 fvdl cnp->cn_flags |= HASBUF; 2028 1.91 fvdl else 2029 1.91 fvdl PNBUF_PUT(cnp->cn_pnbuf); 2030 1.91 fvdl return (0); 2031 1.43 fvdl } else { 2032 1.91 fvdl if ((cnp->cn_flags & LOCKPARENT) && (cnp->cn_flags & ISLASTCN)) 2033 1.56 fvdl VOP_UNLOCK(ndp->ni_dvp, 0); 2034 1.43 fvdl if (!pubflag) { 2035 1.43 fvdl error = EINVAL; 2036 1.43 fvdl break; 2037 1.43 fvdl } 2038 1.43 fvdl 2039 1.43 fvdl if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 2040 1.43 fvdl error = ELOOP; 2041 1.43 fvdl break; 2042 1.43 fvdl } 2043 1.91 fvdl if (ndp->ni_vp->v_mount->mnt_flag & MNT_SYMPERM) { 2044 1.91 fvdl error = VOP_ACCESS(ndp->ni_vp, VEXEC, cnp->cn_cred, 2045 1.91 fvdl cnp->cn_proc); 2046 1.91 fvdl if (error != 0) 2047 1.91 fvdl break; 2048 1.91 fvdl } 2049 1.43 fvdl if (ndp->ni_pathlen > 1) 2050 1.81 thorpej cp = PNBUF_GET(); 2051 1.1 cgd else 2052 1.43 fvdl cp = cnp->cn_pnbuf; 2053 1.43 fvdl aiov.iov_base = cp; 2054 1.43 fvdl aiov.iov_len = MAXPATHLEN; 2055 1.43 fvdl auio.uio_iov = &aiov; 2056 1.43 fvdl auio.uio_iovcnt = 1; 2057 1.43 fvdl auio.uio_offset = 0; 2058 1.43 fvdl auio.uio_rw = UIO_READ; 2059 1.43 fvdl auio.uio_segflg = UIO_SYSSPACE; 2060 1.43 fvdl auio.uio_procp = (struct proc *)0; 2061 1.43 fvdl auio.uio_resid = MAXPATHLEN; 2062 1.43 fvdl error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 2063 1.43 fvdl if (error) { 2064 1.43 fvdl badlink: 2065 1.43 fvdl if (ndp->ni_pathlen > 1) 2066 1.81 thorpej PNBUF_PUT(cp); 2067 1.43 fvdl break; 2068 1.43 fvdl } 2069 1.43 fvdl linklen = MAXPATHLEN - auio.uio_resid; 2070 1.43 fvdl if (linklen == 0) { 2071 1.43 fvdl error = ENOENT; 2072 1.43 fvdl goto badlink; 2073 1.43 fvdl } 2074 1.43 fvdl if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 2075 1.43 fvdl error = ENAMETOOLONG; 2076 1.43 fvdl goto badlink; 2077 1.43 fvdl } 2078 1.43 fvdl if (ndp->ni_pathlen > 1) { 2079 1.63 perry memcpy(cp + linklen, ndp->ni_next, ndp->ni_pathlen); 2080 1.81 thorpej PNBUF_PUT(cnp->cn_pnbuf); 2081 1.43 fvdl cnp->cn_pnbuf = cp; 2082 1.43 fvdl } else 2083 1.43 fvdl cnp->cn_pnbuf[linklen] = '\0'; 2084 1.43 fvdl ndp->ni_pathlen += linklen; 2085 1.1 cgd vput(ndp->ni_vp); 2086 1.43 fvdl dp = ndp->ni_dvp; 2087 1.43 fvdl /* 2088 1.43 fvdl * Check if root directory should replace current directory. 2089 1.43 fvdl */ 2090 1.43 fvdl if (cnp->cn_pnbuf[0] == '/') { 2091 1.43 fvdl vrele(dp); 2092 1.43 fvdl dp = ndp->ni_rootdir; 2093 1.43 fvdl VREF(dp); 2094 1.43 fvdl } 2095 1.1 cgd } 2096 1.43 fvdl } 2097 1.91 fvdl vrele(ndp->ni_dvp); 2098 1.91 fvdl vput(ndp->ni_vp); 2099 1.91 fvdl ndp->ni_vp = NULL; 2100 1.1 cgd out: 2101 1.81 thorpej PNBUF_PUT(cnp->cn_pnbuf); 2102 1.1 cgd return (error); 2103 1.1 cgd } 2104 1.1 cgd 2105 1.1 cgd /* 2106 1.1 cgd * A fiddled version of m_adj() that ensures null fill to a long 2107 1.1 cgd * boundary and only trims off the back end 2108 1.1 cgd */ 2109 1.12 mycroft void 2110 1.1 cgd nfsm_adj(mp, len, nul) 2111 1.1 cgd struct mbuf *mp; 2112 1.75 augustss int len; 2113 1.1 cgd int nul; 2114 1.1 cgd { 2115 1.75 augustss struct mbuf *m; 2116 1.75 augustss int count, i; 2117 1.75 augustss char *cp; 2118 1.1 cgd 2119 1.1 cgd /* 2120 1.1 cgd * Trim from tail. Scan the mbuf chain, 2121 1.1 cgd * calculating its length and finding the last mbuf. 2122 1.1 cgd * If the adjustment only affects this mbuf, then just 2123 1.1 cgd * adjust and return. Otherwise, rescan and truncate 2124 1.1 cgd * after the remaining size. 2125 1.1 cgd */ 2126 1.1 cgd count = 0; 2127 1.1 cgd m = mp; 2128 1.1 cgd for (;;) { 2129 1.1 cgd count += m->m_len; 2130 1.1 cgd if (m->m_next == (struct mbuf *)0) 2131 1.1 cgd break; 2132 1.1 cgd m = m->m_next; 2133 1.1 cgd } 2134 1.1 cgd if (m->m_len > len) { 2135 1.1 cgd m->m_len -= len; 2136 1.1 cgd if (nul > 0) { 2137 1.1 cgd cp = mtod(m, caddr_t)+m->m_len-nul; 2138 1.1 cgd for (i = 0; i < nul; i++) 2139 1.1 cgd *cp++ = '\0'; 2140 1.1 cgd } 2141 1.1 cgd return; 2142 1.1 cgd } 2143 1.1 cgd count -= len; 2144 1.1 cgd if (count < 0) 2145 1.1 cgd count = 0; 2146 1.1 cgd /* 2147 1.1 cgd * Correct length for chain is "count". 2148 1.1 cgd * Find the mbuf with last data, adjust its length, 2149 1.1 cgd * and toss data from remaining mbufs on chain. 2150 1.1 cgd */ 2151 1.1 cgd for (m = mp; m; m = m->m_next) { 2152 1.1 cgd if (m->m_len >= count) { 2153 1.1 cgd m->m_len = count; 2154 1.1 cgd if (nul > 0) { 2155 1.1 cgd cp = mtod(m, caddr_t)+m->m_len-nul; 2156 1.1 cgd for (i = 0; i < nul; i++) 2157 1.1 cgd *cp++ = '\0'; 2158 1.1 cgd } 2159 1.1 cgd break; 2160 1.1 cgd } 2161 1.1 cgd count -= m->m_len; 2162 1.1 cgd } 2163 1.25 fvdl for (m = m->m_next;m;m = m->m_next) 2164 1.1 cgd m->m_len = 0; 2165 1.1 cgd } 2166 1.1 cgd 2167 1.1 cgd /* 2168 1.25 fvdl * Make these functions instead of macros, so that the kernel text size 2169 1.25 fvdl * doesn't get too big... 2170 1.25 fvdl */ 2171 1.25 fvdl void 2172 1.25 fvdl nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 2173 1.25 fvdl struct nfsrv_descript *nfsd; 2174 1.25 fvdl int before_ret; 2175 1.75 augustss struct vattr *before_vap; 2176 1.25 fvdl int after_ret; 2177 1.25 fvdl struct vattr *after_vap; 2178 1.25 fvdl struct mbuf **mbp; 2179 1.25 fvdl char **bposp; 2180 1.25 fvdl { 2181 1.75 augustss struct mbuf *mb = *mbp, *mb2; 2182 1.75 augustss char *bpos = *bposp; 2183 1.75 augustss u_int32_t *tl; 2184 1.25 fvdl 2185 1.25 fvdl if (before_ret) { 2186 1.25 fvdl nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 2187 1.25 fvdl *tl = nfs_false; 2188 1.25 fvdl } else { 2189 1.25 fvdl nfsm_build(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 2190 1.25 fvdl *tl++ = nfs_true; 2191 1.66 fair txdr_hyper(before_vap->va_size, tl); 2192 1.25 fvdl tl += 2; 2193 1.25 fvdl txdr_nfsv3time(&(before_vap->va_mtime), tl); 2194 1.25 fvdl tl += 2; 2195 1.25 fvdl txdr_nfsv3time(&(before_vap->va_ctime), tl); 2196 1.25 fvdl } 2197 1.25 fvdl *bposp = bpos; 2198 1.25 fvdl *mbp = mb; 2199 1.25 fvdl nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 2200 1.25 fvdl } 2201 1.25 fvdl 2202 1.25 fvdl void 2203 1.25 fvdl nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 2204 1.25 fvdl struct nfsrv_descript *nfsd; 2205 1.25 fvdl int after_ret; 2206 1.25 fvdl struct vattr *after_vap; 2207 1.25 fvdl struct mbuf **mbp; 2208 1.25 fvdl char **bposp; 2209 1.25 fvdl { 2210 1.75 augustss struct mbuf *mb = *mbp, *mb2; 2211 1.75 augustss char *bpos = *bposp; 2212 1.75 augustss u_int32_t *tl; 2213 1.75 augustss struct nfs_fattr *fp; 2214 1.25 fvdl 2215 1.25 fvdl if (after_ret) { 2216 1.25 fvdl nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 2217 1.25 fvdl *tl = nfs_false; 2218 1.25 fvdl } else { 2219 1.25 fvdl nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_V3FATTR); 2220 1.25 fvdl *tl++ = nfs_true; 2221 1.25 fvdl fp = (struct nfs_fattr *)tl; 2222 1.25 fvdl nfsm_srvfattr(nfsd, after_vap, fp); 2223 1.25 fvdl } 2224 1.25 fvdl *mbp = mb; 2225 1.25 fvdl *bposp = bpos; 2226 1.25 fvdl } 2227 1.25 fvdl 2228 1.25 fvdl void 2229 1.25 fvdl nfsm_srvfattr(nfsd, vap, fp) 2230 1.75 augustss struct nfsrv_descript *nfsd; 2231 1.75 augustss struct vattr *vap; 2232 1.75 augustss struct nfs_fattr *fp; 2233 1.25 fvdl { 2234 1.25 fvdl 2235 1.25 fvdl fp->fa_nlink = txdr_unsigned(vap->va_nlink); 2236 1.25 fvdl fp->fa_uid = txdr_unsigned(vap->va_uid); 2237 1.25 fvdl fp->fa_gid = txdr_unsigned(vap->va_gid); 2238 1.25 fvdl if (nfsd->nd_flag & ND_NFSV3) { 2239 1.25 fvdl fp->fa_type = vtonfsv3_type(vap->va_type); 2240 1.25 fvdl fp->fa_mode = vtonfsv3_mode(vap->va_mode); 2241 1.66 fair txdr_hyper(vap->va_size, &fp->fa3_size); 2242 1.66 fair txdr_hyper(vap->va_bytes, &fp->fa3_used); 2243 1.25 fvdl fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 2244 1.25 fvdl fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 2245 1.25 fvdl fp->fa3_fsid.nfsuquad[0] = 0; 2246 1.25 fvdl fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 2247 1.25 fvdl fp->fa3_fileid.nfsuquad[0] = 0; 2248 1.25 fvdl fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid); 2249 1.25 fvdl txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 2250 1.25 fvdl txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 2251 1.25 fvdl txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 2252 1.25 fvdl } else { 2253 1.25 fvdl fp->fa_type = vtonfsv2_type(vap->va_type); 2254 1.25 fvdl fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 2255 1.25 fvdl fp->fa2_size = txdr_unsigned(vap->va_size); 2256 1.25 fvdl fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 2257 1.25 fvdl if (vap->va_type == VFIFO) 2258 1.25 fvdl fp->fa2_rdev = 0xffffffff; 2259 1.25 fvdl else 2260 1.25 fvdl fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 2261 1.25 fvdl fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 2262 1.25 fvdl fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 2263 1.25 fvdl fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 2264 1.25 fvdl txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 2265 1.25 fvdl txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 2266 1.25 fvdl txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 2267 1.25 fvdl } 2268 1.25 fvdl } 2269 1.25 fvdl 2270 1.25 fvdl /* 2271 1.1 cgd * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 2272 1.1 cgd * - look up fsid in mount list (if not found ret error) 2273 1.12 mycroft * - get vp and export rights by calling VFS_FHTOVP() 2274 1.12 mycroft * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2275 1.1 cgd * - if not lockflag unlock it with VOP_UNLOCK() 2276 1.1 cgd */ 2277 1.24 christos int 2278 1.43 fvdl nfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag, pubflag) 2279 1.1 cgd fhandle_t *fhp; 2280 1.1 cgd int lockflag; 2281 1.1 cgd struct vnode **vpp; 2282 1.1 cgd struct ucred *cred; 2283 1.12 mycroft struct nfssvc_sock *slp; 2284 1.12 mycroft struct mbuf *nam; 2285 1.12 mycroft int *rdonlyp; 2286 1.25 fvdl int kerbflag; 2287 1.1 cgd { 2288 1.75 augustss struct mount *mp; 2289 1.75 augustss int i; 2290 1.12 mycroft struct ucred *credanon; 2291 1.12 mycroft int error, exflags; 2292 1.40 fvdl struct sockaddr_in *saddr; 2293 1.1 cgd 2294 1.12 mycroft *vpp = (struct vnode *)0; 2295 1.43 fvdl 2296 1.43 fvdl if (nfs_ispublicfh(fhp)) { 2297 1.43 fvdl if (!pubflag || !nfs_pub.np_valid) 2298 1.43 fvdl return (ESTALE); 2299 1.43 fvdl fhp = &nfs_pub.np_handle; 2300 1.43 fvdl } 2301 1.43 fvdl 2302 1.25 fvdl mp = vfs_getvfs(&fhp->fh_fsid); 2303 1.25 fvdl if (!mp) 2304 1.1 cgd return (ESTALE); 2305 1.65 wrstuden error = VFS_CHECKEXP(mp, nam, &exflags, &credanon); 2306 1.64 wrstuden if (error) 2307 1.64 wrstuden return (error); 2308 1.64 wrstuden error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp); 2309 1.24 christos if (error) 2310 1.12 mycroft return (error); 2311 1.40 fvdl 2312 1.43 fvdl if (!(exflags & (MNT_EXNORESPORT|MNT_EXPUBLIC))) { 2313 1.40 fvdl saddr = mtod(nam, struct sockaddr_in *); 2314 1.76 fvdl if ((saddr->sin_family == AF_INET) && 2315 1.40 fvdl ntohs(saddr->sin_port) >= IPPORT_RESERVED) { 2316 1.40 fvdl vput(*vpp); 2317 1.40 fvdl return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2318 1.40 fvdl } 2319 1.76 fvdl #ifdef INET6 2320 1.76 fvdl if ((saddr->sin_family == AF_INET6) && 2321 1.76 fvdl ntohs(saddr->sin_port) >= IPV6PORT_RESERVED) { 2322 1.76 fvdl vput(*vpp); 2323 1.76 fvdl return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2324 1.76 fvdl } 2325 1.76 fvdl #endif 2326 1.40 fvdl } 2327 1.12 mycroft /* 2328 1.12 mycroft * Check/setup credentials. 2329 1.12 mycroft */ 2330 1.12 mycroft if (exflags & MNT_EXKERB) { 2331 1.25 fvdl if (!kerbflag) { 2332 1.12 mycroft vput(*vpp); 2333 1.25 fvdl return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2334 1.12 mycroft } 2335 1.25 fvdl } else if (kerbflag) { 2336 1.25 fvdl vput(*vpp); 2337 1.25 fvdl return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2338 1.12 mycroft } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) { 2339 1.12 mycroft cred->cr_uid = credanon->cr_uid; 2340 1.19 jtc cred->cr_gid = credanon->cr_gid; 2341 1.12 mycroft for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++) 2342 1.12 mycroft cred->cr_groups[i] = credanon->cr_groups[i]; 2343 1.15 mycroft cred->cr_ngroups = i; 2344 1.12 mycroft } 2345 1.12 mycroft if (exflags & MNT_EXRDONLY) 2346 1.12 mycroft *rdonlyp = 1; 2347 1.12 mycroft else 2348 1.12 mycroft *rdonlyp = 0; 2349 1.1 cgd if (!lockflag) 2350 1.56 fvdl VOP_UNLOCK(*vpp, 0); 2351 1.1 cgd return (0); 2352 1.43 fvdl } 2353 1.43 fvdl 2354 1.43 fvdl /* 2355 1.43 fvdl * WebNFS: check if a filehandle is a public filehandle. For v3, this 2356 1.43 fvdl * means a length of 0, for v2 it means all zeroes. nfsm_srvmtofh has 2357 1.43 fvdl * transformed this to all zeroes in both cases, so check for it. 2358 1.43 fvdl */ 2359 1.43 fvdl int 2360 1.43 fvdl nfs_ispublicfh(fhp) 2361 1.43 fvdl fhandle_t *fhp; 2362 1.43 fvdl { 2363 1.43 fvdl char *cp = (char *)fhp; 2364 1.43 fvdl int i; 2365 1.43 fvdl 2366 1.43 fvdl for (i = 0; i < NFSX_V3FH; i++) 2367 1.43 fvdl if (*cp++ != 0) 2368 1.43 fvdl return (FALSE); 2369 1.43 fvdl return (TRUE); 2370 1.1 cgd } 2371 1.1 cgd 2372 1.1 cgd /* 2373 1.12 mycroft * This function compares two net addresses by family and returns TRUE 2374 1.12 mycroft * if they are the same host. 2375 1.12 mycroft * If there is any doubt, return FALSE. 2376 1.12 mycroft * The AF_INET family is handled as a special case so that address mbufs 2377 1.12 mycroft * don't need to be saved to store "struct in_addr", which is only 4 bytes. 2378 1.1 cgd */ 2379 1.24 christos int 2380 1.12 mycroft netaddr_match(family, haddr, nam) 2381 1.12 mycroft int family; 2382 1.12 mycroft union nethostaddr *haddr; 2383 1.12 mycroft struct mbuf *nam; 2384 1.1 cgd { 2385 1.75 augustss struct sockaddr_in *inetaddr; 2386 1.1 cgd 2387 1.12 mycroft switch (family) { 2388 1.12 mycroft case AF_INET: 2389 1.12 mycroft inetaddr = mtod(nam, struct sockaddr_in *); 2390 1.12 mycroft if (inetaddr->sin_family == AF_INET && 2391 1.12 mycroft inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 2392 1.12 mycroft return (1); 2393 1.12 mycroft break; 2394 1.76 fvdl #ifdef INET6 2395 1.76 fvdl case AF_INET6: 2396 1.76 fvdl { 2397 1.76 fvdl struct sockaddr_in6 *sin6_1, *sin6_2; 2398 1.76 fvdl 2399 1.76 fvdl sin6_1 = mtod(nam, struct sockaddr_in6 *); 2400 1.76 fvdl sin6_2 = mtod(haddr->had_nam, struct sockaddr_in6 *); 2401 1.76 fvdl if (sin6_1->sin6_family == AF_INET6 && 2402 1.76 fvdl IN6_ARE_ADDR_EQUAL(&sin6_1->sin6_addr, &sin6_2->sin6_addr)) 2403 1.76 fvdl return 1; 2404 1.76 fvdl } 2405 1.76 fvdl #endif 2406 1.12 mycroft #ifdef ISO 2407 1.12 mycroft case AF_ISO: 2408 1.12 mycroft { 2409 1.75 augustss struct sockaddr_iso *isoaddr1, *isoaddr2; 2410 1.12 mycroft 2411 1.12 mycroft isoaddr1 = mtod(nam, struct sockaddr_iso *); 2412 1.12 mycroft isoaddr2 = mtod(haddr->had_nam, struct sockaddr_iso *); 2413 1.12 mycroft if (isoaddr1->siso_family == AF_ISO && 2414 1.12 mycroft isoaddr1->siso_nlen > 0 && 2415 1.12 mycroft isoaddr1->siso_nlen == isoaddr2->siso_nlen && 2416 1.12 mycroft SAME_ISOADDR(isoaddr1, isoaddr2)) 2417 1.12 mycroft return (1); 2418 1.12 mycroft break; 2419 1.12 mycroft } 2420 1.12 mycroft #endif /* ISO */ 2421 1.12 mycroft default: 2422 1.12 mycroft break; 2423 1.12 mycroft }; 2424 1.12 mycroft return (0); 2425 1.25 fvdl } 2426 1.25 fvdl 2427 1.25 fvdl /* 2428 1.25 fvdl * The write verifier has changed (probably due to a server reboot), so all 2429 1.25 fvdl * B_NEEDCOMMIT blocks will have to be written again. Since they are on the 2430 1.25 fvdl * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT 2431 1.25 fvdl * flag. Once done the new write verifier can be set for the mount point. 2432 1.25 fvdl */ 2433 1.25 fvdl void 2434 1.25 fvdl nfs_clearcommit(mp) 2435 1.25 fvdl struct mount *mp; 2436 1.25 fvdl { 2437 1.89 chs struct vnode *vp; 2438 1.83 fvdl struct nfsnode *np; 2439 1.89 chs struct vm_page *pg; 2440 1.25 fvdl int s; 2441 1.25 fvdl 2442 1.25 fvdl s = splbio(); 2443 1.89 chs LIST_FOREACH(vp, &mp->mnt_vnodelist, v_mntvnodes) { 2444 1.89 chs KASSERT(vp->v_mount == mp); 2445 1.85 enami if (vp->v_type == VNON) 2446 1.85 enami continue; 2447 1.83 fvdl np = VTONFS(vp); 2448 1.83 fvdl np->n_pushlo = np->n_pushhi = np->n_pushedlo = 2449 1.83 fvdl np->n_pushedhi = 0; 2450 1.83 fvdl np->n_commitflags &= 2451 1.83 fvdl ~(NFS_COMMIT_PUSH_VALID | NFS_COMMIT_PUSHED_VALID); 2452 1.97 chs simple_lock(&vp->v_uobj.vmobjlock); 2453 1.97 chs TAILQ_FOREACH(pg, &vp->v_uobj.memq, listq) { 2454 1.89 chs pg->flags &= ~PG_NEEDCOMMIT; 2455 1.25 fvdl } 2456 1.97 chs simple_unlock(&vp->v_uobj.vmobjlock); 2457 1.25 fvdl } 2458 1.25 fvdl splx(s); 2459 1.83 fvdl } 2460 1.83 fvdl 2461 1.83 fvdl void 2462 1.83 fvdl nfs_merge_commit_ranges(vp) 2463 1.83 fvdl struct vnode *vp; 2464 1.83 fvdl { 2465 1.83 fvdl struct nfsnode *np = VTONFS(vp); 2466 1.83 fvdl 2467 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) { 2468 1.83 fvdl np->n_pushedlo = np->n_pushlo; 2469 1.83 fvdl np->n_pushedhi = np->n_pushhi; 2470 1.83 fvdl np->n_commitflags |= NFS_COMMIT_PUSHED_VALID; 2471 1.83 fvdl } else { 2472 1.83 fvdl if (np->n_pushlo < np->n_pushedlo) 2473 1.83 fvdl np->n_pushedlo = np->n_pushlo; 2474 1.83 fvdl if (np->n_pushhi > np->n_pushedhi) 2475 1.83 fvdl np->n_pushedhi = np->n_pushhi; 2476 1.83 fvdl } 2477 1.83 fvdl 2478 1.83 fvdl np->n_pushlo = np->n_pushhi = 0; 2479 1.83 fvdl np->n_commitflags &= ~NFS_COMMIT_PUSH_VALID; 2480 1.83 fvdl 2481 1.83 fvdl #ifdef fvdl_debug 2482 1.83 fvdl printf("merge: committed: %u - %u\n", (unsigned)np->n_pushedlo, 2483 1.83 fvdl (unsigned)np->n_pushedhi); 2484 1.83 fvdl #endif 2485 1.83 fvdl } 2486 1.83 fvdl 2487 1.83 fvdl int 2488 1.89 chs nfs_in_committed_range(vp, off, len) 2489 1.83 fvdl struct vnode *vp; 2490 1.89 chs off_t off, len; 2491 1.83 fvdl { 2492 1.83 fvdl struct nfsnode *np = VTONFS(vp); 2493 1.83 fvdl off_t lo, hi; 2494 1.83 fvdl 2495 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) 2496 1.83 fvdl return 0; 2497 1.89 chs lo = off; 2498 1.89 chs hi = lo + len; 2499 1.83 fvdl 2500 1.83 fvdl return (lo >= np->n_pushedlo && hi <= np->n_pushedhi); 2501 1.83 fvdl } 2502 1.83 fvdl 2503 1.83 fvdl int 2504 1.89 chs nfs_in_tobecommitted_range(vp, off, len) 2505 1.83 fvdl struct vnode *vp; 2506 1.89 chs off_t off, len; 2507 1.83 fvdl { 2508 1.83 fvdl struct nfsnode *np = VTONFS(vp); 2509 1.83 fvdl off_t lo, hi; 2510 1.83 fvdl 2511 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) 2512 1.83 fvdl return 0; 2513 1.89 chs lo = off; 2514 1.89 chs hi = lo + len; 2515 1.83 fvdl 2516 1.83 fvdl return (lo >= np->n_pushlo && hi <= np->n_pushhi); 2517 1.83 fvdl } 2518 1.83 fvdl 2519 1.83 fvdl void 2520 1.89 chs nfs_add_committed_range(vp, off, len) 2521 1.83 fvdl struct vnode *vp; 2522 1.89 chs off_t off, len; 2523 1.83 fvdl { 2524 1.83 fvdl struct nfsnode *np = VTONFS(vp); 2525 1.83 fvdl off_t lo, hi; 2526 1.83 fvdl 2527 1.89 chs lo = off; 2528 1.89 chs hi = lo + len; 2529 1.83 fvdl 2530 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) { 2531 1.83 fvdl np->n_pushedlo = lo; 2532 1.83 fvdl np->n_pushedhi = hi; 2533 1.83 fvdl np->n_commitflags |= NFS_COMMIT_PUSHED_VALID; 2534 1.83 fvdl } else { 2535 1.83 fvdl if (hi > np->n_pushedhi) 2536 1.83 fvdl np->n_pushedhi = hi; 2537 1.83 fvdl if (lo < np->n_pushedlo) 2538 1.83 fvdl np->n_pushedlo = lo; 2539 1.83 fvdl } 2540 1.83 fvdl #ifdef fvdl_debug 2541 1.83 fvdl printf("add: committed: %u - %u\n", (unsigned)np->n_pushedlo, 2542 1.83 fvdl (unsigned)np->n_pushedhi); 2543 1.83 fvdl #endif 2544 1.83 fvdl } 2545 1.83 fvdl 2546 1.83 fvdl void 2547 1.89 chs nfs_del_committed_range(vp, off, len) 2548 1.83 fvdl struct vnode *vp; 2549 1.89 chs off_t off, len; 2550 1.83 fvdl { 2551 1.83 fvdl struct nfsnode *np = VTONFS(vp); 2552 1.83 fvdl off_t lo, hi; 2553 1.83 fvdl 2554 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) 2555 1.83 fvdl return; 2556 1.83 fvdl 2557 1.89 chs lo = off; 2558 1.89 chs hi = lo + len; 2559 1.83 fvdl 2560 1.83 fvdl if (lo > np->n_pushedhi || hi < np->n_pushedlo) 2561 1.83 fvdl return; 2562 1.83 fvdl if (lo <= np->n_pushedlo) 2563 1.83 fvdl np->n_pushedlo = hi; 2564 1.83 fvdl else if (hi >= np->n_pushedhi) 2565 1.83 fvdl np->n_pushedhi = lo; 2566 1.83 fvdl else { 2567 1.83 fvdl /* 2568 1.83 fvdl * XXX There's only one range. If the deleted range 2569 1.83 fvdl * is in the middle, pick the largest of the 2570 1.83 fvdl * contiguous ranges that it leaves. 2571 1.83 fvdl */ 2572 1.83 fvdl if ((np->n_pushedlo - lo) > (hi - np->n_pushedhi)) 2573 1.83 fvdl np->n_pushedhi = lo; 2574 1.83 fvdl else 2575 1.83 fvdl np->n_pushedlo = hi; 2576 1.83 fvdl } 2577 1.83 fvdl #ifdef fvdl_debug 2578 1.83 fvdl printf("del: committed: %u - %u\n", (unsigned)np->n_pushedlo, 2579 1.83 fvdl (unsigned)np->n_pushedhi); 2580 1.83 fvdl #endif 2581 1.83 fvdl } 2582 1.83 fvdl 2583 1.83 fvdl void 2584 1.89 chs nfs_add_tobecommitted_range(vp, off, len) 2585 1.83 fvdl struct vnode *vp; 2586 1.89 chs off_t off, len; 2587 1.83 fvdl { 2588 1.83 fvdl struct nfsnode *np = VTONFS(vp); 2589 1.83 fvdl off_t lo, hi; 2590 1.83 fvdl 2591 1.89 chs lo = off; 2592 1.89 chs hi = lo + len; 2593 1.83 fvdl 2594 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) { 2595 1.83 fvdl np->n_pushlo = lo; 2596 1.83 fvdl np->n_pushhi = hi; 2597 1.83 fvdl np->n_commitflags |= NFS_COMMIT_PUSH_VALID; 2598 1.83 fvdl } else { 2599 1.83 fvdl if (lo < np->n_pushlo) 2600 1.83 fvdl np->n_pushlo = lo; 2601 1.83 fvdl if (hi > np->n_pushhi) 2602 1.83 fvdl np->n_pushhi = hi; 2603 1.83 fvdl } 2604 1.83 fvdl #ifdef fvdl_debug 2605 1.83 fvdl printf("add: tobecommitted: %u - %u\n", (unsigned)np->n_pushlo, 2606 1.83 fvdl (unsigned)np->n_pushhi); 2607 1.83 fvdl #endif 2608 1.83 fvdl } 2609 1.83 fvdl 2610 1.83 fvdl void 2611 1.89 chs nfs_del_tobecommitted_range(vp, off, len) 2612 1.83 fvdl struct vnode *vp; 2613 1.89 chs off_t off, len; 2614 1.83 fvdl { 2615 1.83 fvdl struct nfsnode *np = VTONFS(vp); 2616 1.83 fvdl off_t lo, hi; 2617 1.83 fvdl 2618 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) 2619 1.83 fvdl return; 2620 1.83 fvdl 2621 1.89 chs lo = off; 2622 1.89 chs hi = lo + len; 2623 1.83 fvdl 2624 1.83 fvdl if (lo > np->n_pushhi || hi < np->n_pushlo) 2625 1.83 fvdl return; 2626 1.83 fvdl 2627 1.83 fvdl if (lo <= np->n_pushlo) 2628 1.83 fvdl np->n_pushlo = hi; 2629 1.83 fvdl else if (hi >= np->n_pushhi) 2630 1.83 fvdl np->n_pushhi = lo; 2631 1.83 fvdl else { 2632 1.83 fvdl /* 2633 1.83 fvdl * XXX There's only one range. If the deleted range 2634 1.83 fvdl * is in the middle, pick the largest of the 2635 1.83 fvdl * contiguous ranges that it leaves. 2636 1.83 fvdl */ 2637 1.83 fvdl if ((np->n_pushlo - lo) > (hi - np->n_pushhi)) 2638 1.83 fvdl np->n_pushhi = lo; 2639 1.83 fvdl else 2640 1.83 fvdl np->n_pushlo = hi; 2641 1.83 fvdl } 2642 1.83 fvdl #ifdef fvdl_debug 2643 1.83 fvdl printf("del: tobecommitted: %u - %u\n", (unsigned)np->n_pushlo, 2644 1.83 fvdl (unsigned)np->n_pushhi); 2645 1.83 fvdl #endif 2646 1.25 fvdl } 2647 1.25 fvdl 2648 1.25 fvdl /* 2649 1.25 fvdl * Map errnos to NFS error numbers. For Version 3 also filter out error 2650 1.25 fvdl * numbers not specified for the associated procedure. 2651 1.25 fvdl */ 2652 1.25 fvdl int 2653 1.25 fvdl nfsrv_errmap(nd, err) 2654 1.25 fvdl struct nfsrv_descript *nd; 2655 1.75 augustss int err; 2656 1.25 fvdl { 2657 1.90 jdolecek const short *defaulterrp, *errp; 2658 1.25 fvdl 2659 1.25 fvdl if (nd->nd_flag & ND_NFSV3) { 2660 1.25 fvdl if (nd->nd_procnum <= NFSPROC_COMMIT) { 2661 1.25 fvdl errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 2662 1.25 fvdl while (*++errp) { 2663 1.25 fvdl if (*errp == err) 2664 1.25 fvdl return (err); 2665 1.25 fvdl else if (*errp > err) 2666 1.25 fvdl break; 2667 1.25 fvdl } 2668 1.25 fvdl return ((int)*defaulterrp); 2669 1.25 fvdl } else 2670 1.25 fvdl return (err & 0xffff); 2671 1.25 fvdl } 2672 1.25 fvdl if (err <= ELAST) 2673 1.25 fvdl return ((int)nfsrv_v2errmap[err - 1]); 2674 1.25 fvdl return (NFSERR_IO); 2675 1.25 fvdl } 2676 1.25 fvdl 2677 1.25 fvdl /* 2678 1.25 fvdl * Sort the group list in increasing numerical order. 2679 1.25 fvdl * (Insertion sort by Chris Torek, who was grossed out by the bubble sort 2680 1.25 fvdl * that used to be here.) 2681 1.25 fvdl */ 2682 1.25 fvdl void 2683 1.25 fvdl nfsrvw_sort(list, num) 2684 1.75 augustss gid_t *list; 2685 1.75 augustss int num; 2686 1.25 fvdl { 2687 1.75 augustss int i, j; 2688 1.25 fvdl gid_t v; 2689 1.25 fvdl 2690 1.25 fvdl /* Insertion sort. */ 2691 1.25 fvdl for (i = 1; i < num; i++) { 2692 1.25 fvdl v = list[i]; 2693 1.25 fvdl /* find correct slot for value v, moving others up */ 2694 1.25 fvdl for (j = i; --j >= 0 && v < list[j];) 2695 1.25 fvdl list[j + 1] = list[j]; 2696 1.25 fvdl list[j + 1] = v; 2697 1.25 fvdl } 2698 1.25 fvdl } 2699 1.25 fvdl 2700 1.25 fvdl /* 2701 1.63 perry * copy credentials making sure that the result can be compared with memcmp(). 2702 1.25 fvdl */ 2703 1.25 fvdl void 2704 1.25 fvdl nfsrv_setcred(incred, outcred) 2705 1.75 augustss struct ucred *incred, *outcred; 2706 1.25 fvdl { 2707 1.75 augustss int i; 2708 1.25 fvdl 2709 1.63 perry memset((caddr_t)outcred, 0, sizeof (struct ucred)); 2710 1.25 fvdl outcred->cr_ref = 1; 2711 1.25 fvdl outcred->cr_uid = incred->cr_uid; 2712 1.25 fvdl outcred->cr_gid = incred->cr_gid; 2713 1.25 fvdl outcred->cr_ngroups = incred->cr_ngroups; 2714 1.25 fvdl for (i = 0; i < incred->cr_ngroups; i++) 2715 1.25 fvdl outcred->cr_groups[i] = incred->cr_groups[i]; 2716 1.25 fvdl nfsrvw_sort(outcred->cr_groups, outcred->cr_ngroups); 2717 1.1 cgd } 2718
Indexes created Mon Sep 22 13:09:51 GMT 2025