nfs_subs.c revision 1.164.2.2
1 1.164.2.2 chap /* $NetBSD: nfs_subs.c,v 1.164.2.2 2006/06/19 04:10:37 chap Exp $ */ 2 1.164.2.2 chap 3 1.164.2.2 chap /* 4 1.164.2.2 chap * Copyright (c) 1989, 1993 5 1.164.2.2 chap * The Regents of the University of California. All rights reserved. 6 1.164.2.2 chap * 7 1.164.2.2 chap * This code is derived from software contributed to Berkeley by 8 1.164.2.2 chap * Rick Macklem at The University of Guelph. 9 1.164.2.2 chap * 10 1.164.2.2 chap * Redistribution and use in source and binary forms, with or without 11 1.164.2.2 chap * modification, are permitted provided that the following conditions 12 1.164.2.2 chap * are met: 13 1.164.2.2 chap * 1. Redistributions of source code must retain the above copyright 14 1.164.2.2 chap * notice, this list of conditions and the following disclaimer. 15 1.164.2.2 chap * 2. Redistributions in binary form must reproduce the above copyright 16 1.164.2.2 chap * notice, this list of conditions and the following disclaimer in the 17 1.164.2.2 chap * documentation and/or other materials provided with the distribution. 18 1.164.2.2 chap * 3. Neither the name of the University nor the names of its contributors 19 1.164.2.2 chap * may be used to endorse or promote products derived from this software 20 1.164.2.2 chap * without specific prior written permission. 21 1.164.2.2 chap * 22 1.164.2.2 chap * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 1.164.2.2 chap * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 1.164.2.2 chap * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 1.164.2.2 chap * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 1.164.2.2 chap * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 1.164.2.2 chap * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 1.164.2.2 chap * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 1.164.2.2 chap * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 1.164.2.2 chap * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 1.164.2.2 chap * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 1.164.2.2 chap * SUCH DAMAGE. 33 1.164.2.2 chap * 34 1.164.2.2 chap * @(#)nfs_subs.c 8.8 (Berkeley) 5/22/95 35 1.164.2.2 chap */ 36 1.164.2.2 chap 37 1.164.2.2 chap /* 38 1.164.2.2 chap * Copyright 2000 Wasabi Systems, Inc. 39 1.164.2.2 chap * All rights reserved. 40 1.164.2.2 chap * 41 1.164.2.2 chap * Written by Frank van der Linden for Wasabi Systems, Inc. 42 1.164.2.2 chap * 43 1.164.2.2 chap * Redistribution and use in source and binary forms, with or without 44 1.164.2.2 chap * modification, are permitted provided that the following conditions 45 1.164.2.2 chap * are met: 46 1.164.2.2 chap * 1. Redistributions of source code must retain the above copyright 47 1.164.2.2 chap * notice, this list of conditions and the following disclaimer. 48 1.164.2.2 chap * 2. Redistributions in binary form must reproduce the above copyright 49 1.164.2.2 chap * notice, this list of conditions and the following disclaimer in the 50 1.164.2.2 chap * documentation and/or other materials provided with the distribution. 51 1.164.2.2 chap * 3. All advertising materials mentioning features or use of this software 52 1.164.2.2 chap * must display the following acknowledgement: 53 1.164.2.2 chap * This product includes software developed for the NetBSD Project by 54 1.164.2.2 chap * Wasabi Systems, Inc. 55 1.164.2.2 chap * 4. The name of Wasabi Systems, Inc. may not be used to endorse 56 1.164.2.2 chap * or promote products derived from this software without specific prior 57 1.164.2.2 chap * written permission. 58 1.164.2.2 chap * 59 1.164.2.2 chap * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 60 1.164.2.2 chap * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 61 1.164.2.2 chap * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 62 1.164.2.2 chap * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 63 1.164.2.2 chap * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 64 1.164.2.2 chap * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 65 1.164.2.2 chap * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 66 1.164.2.2 chap * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 67 1.164.2.2 chap * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 68 1.164.2.2 chap * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 69 1.164.2.2 chap * POSSIBILITY OF SUCH DAMAGE. 70 1.164.2.2 chap */ 71 1.164.2.2 chap 72 1.164.2.2 chap #include <sys/cdefs.h> 73 1.164.2.2 chap __KERNEL_RCSID(0, "$NetBSD: nfs_subs.c,v 1.164.2.2 2006/06/19 04:10:37 chap Exp $"); 74 1.164.2.2 chap 75 1.164.2.2 chap #include "fs_nfs.h" 76 1.164.2.2 chap #include "opt_nfs.h" 77 1.164.2.2 chap #include "opt_nfsserver.h" 78 1.164.2.2 chap #include "opt_iso.h" 79 1.164.2.2 chap #include "opt_inet.h" 80 1.164.2.2 chap 81 1.164.2.2 chap /* 82 1.164.2.2 chap * These functions support the macros and help fiddle mbuf chains for 83 1.164.2.2 chap * the nfs op functions. They do things like create the rpc header and 84 1.164.2.2 chap * copy data between mbuf chains and uio lists. 85 1.164.2.2 chap */ 86 1.164.2.2 chap #include <sys/param.h> 87 1.164.2.2 chap #include <sys/proc.h> 88 1.164.2.2 chap #include <sys/systm.h> 89 1.164.2.2 chap #include <sys/kernel.h> 90 1.164.2.2 chap #include <sys/mount.h> 91 1.164.2.2 chap #include <sys/vnode.h> 92 1.164.2.2 chap #include <sys/namei.h> 93 1.164.2.2 chap #include <sys/mbuf.h> 94 1.164.2.2 chap #include <sys/socket.h> 95 1.164.2.2 chap #include <sys/stat.h> 96 1.164.2.2 chap #include <sys/malloc.h> 97 1.164.2.2 chap #include <sys/filedesc.h> 98 1.164.2.2 chap #include <sys/time.h> 99 1.164.2.2 chap #include <sys/dirent.h> 100 1.164.2.2 chap #include <sys/once.h> 101 1.164.2.2 chap #include <sys/kauth.h> 102 1.164.2.2 chap 103 1.164.2.2 chap #include <uvm/uvm_extern.h> 104 1.164.2.2 chap 105 1.164.2.2 chap #include <nfs/rpcv2.h> 106 1.164.2.2 chap #include <nfs/nfsproto.h> 107 1.164.2.2 chap #include <nfs/nfsnode.h> 108 1.164.2.2 chap #include <nfs/nfs.h> 109 1.164.2.2 chap #include <nfs/xdr_subs.h> 110 1.164.2.2 chap #include <nfs/nfsm_subs.h> 111 1.164.2.2 chap #include <nfs/nfsmount.h> 112 1.164.2.2 chap #include <nfs/nqnfs.h> 113 1.164.2.2 chap #include <nfs/nfsrtt.h> 114 1.164.2.2 chap #include <nfs/nfs_var.h> 115 1.164.2.2 chap 116 1.164.2.2 chap #include <miscfs/specfs/specdev.h> 117 1.164.2.2 chap 118 1.164.2.2 chap #include <netinet/in.h> 119 1.164.2.2 chap #ifdef ISO 120 1.164.2.2 chap #include <netiso/iso.h> 121 1.164.2.2 chap #endif 122 1.164.2.2 chap 123 1.164.2.2 chap /* 124 1.164.2.2 chap * Data items converted to xdr at startup, since they are constant 125 1.164.2.2 chap * This is kinda hokey, but may save a little time doing byte swaps 126 1.164.2.2 chap */ 127 1.164.2.2 chap u_int32_t nfs_xdrneg1; 128 1.164.2.2 chap u_int32_t rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 129 1.164.2.2 chap rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 130 1.164.2.2 chap rpc_auth_kerb; 131 1.164.2.2 chap u_int32_t nfs_prog, nqnfs_prog, nfs_true, nfs_false; 132 1.164.2.2 chap 133 1.164.2.2 chap /* And other global data */ 134 1.164.2.2 chap const nfstype nfsv2_type[9] = 135 1.164.2.2 chap { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON, NFCHR, NFNON }; 136 1.164.2.2 chap const nfstype nfsv3_type[9] = 137 1.164.2.2 chap { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK, NFFIFO, NFNON }; 138 1.164.2.2 chap const enum vtype nv2tov_type[8] = 139 1.164.2.2 chap { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON }; 140 1.164.2.2 chap const enum vtype nv3tov_type[8] = 141 1.164.2.2 chap { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO }; 142 1.164.2.2 chap int nfs_ticks; 143 1.164.2.2 chap int nfs_commitsize; 144 1.164.2.2 chap 145 1.164.2.2 chap MALLOC_DEFINE(M_NFSDIROFF, "NFS diroff", "NFS directory cookies"); 146 1.164.2.2 chap 147 1.164.2.2 chap /* NFS client/server stats. */ 148 1.164.2.2 chap struct nfsstats nfsstats; 149 1.164.2.2 chap 150 1.164.2.2 chap /* 151 1.164.2.2 chap * Mapping of old NFS Version 2 RPC numbers to generic numbers. 152 1.164.2.2 chap */ 153 1.164.2.2 chap const int nfsv3_procid[NFS_NPROCS] = { 154 1.164.2.2 chap NFSPROC_NULL, 155 1.164.2.2 chap NFSPROC_GETATTR, 156 1.164.2.2 chap NFSPROC_SETATTR, 157 1.164.2.2 chap NFSPROC_NOOP, 158 1.164.2.2 chap NFSPROC_LOOKUP, 159 1.164.2.2 chap NFSPROC_READLINK, 160 1.164.2.2 chap NFSPROC_READ, 161 1.164.2.2 chap NFSPROC_NOOP, 162 1.164.2.2 chap NFSPROC_WRITE, 163 1.164.2.2 chap NFSPROC_CREATE, 164 1.164.2.2 chap NFSPROC_REMOVE, 165 1.164.2.2 chap NFSPROC_RENAME, 166 1.164.2.2 chap NFSPROC_LINK, 167 1.164.2.2 chap NFSPROC_SYMLINK, 168 1.164.2.2 chap NFSPROC_MKDIR, 169 1.164.2.2 chap NFSPROC_RMDIR, 170 1.164.2.2 chap NFSPROC_READDIR, 171 1.164.2.2 chap NFSPROC_FSSTAT, 172 1.164.2.2 chap NFSPROC_NOOP, 173 1.164.2.2 chap NFSPROC_NOOP, 174 1.164.2.2 chap NFSPROC_NOOP, 175 1.164.2.2 chap NFSPROC_NOOP, 176 1.164.2.2 chap NFSPROC_NOOP, 177 1.164.2.2 chap NFSPROC_NOOP, 178 1.164.2.2 chap NFSPROC_NOOP, 179 1.164.2.2 chap NFSPROC_NOOP 180 1.164.2.2 chap }; 181 1.164.2.2 chap 182 1.164.2.2 chap /* 183 1.164.2.2 chap * and the reverse mapping from generic to Version 2 procedure numbers 184 1.164.2.2 chap */ 185 1.164.2.2 chap const int nfsv2_procid[NFS_NPROCS] = { 186 1.164.2.2 chap NFSV2PROC_NULL, 187 1.164.2.2 chap NFSV2PROC_GETATTR, 188 1.164.2.2 chap NFSV2PROC_SETATTR, 189 1.164.2.2 chap NFSV2PROC_LOOKUP, 190 1.164.2.2 chap NFSV2PROC_NOOP, 191 1.164.2.2 chap NFSV2PROC_READLINK, 192 1.164.2.2 chap NFSV2PROC_READ, 193 1.164.2.2 chap NFSV2PROC_WRITE, 194 1.164.2.2 chap NFSV2PROC_CREATE, 195 1.164.2.2 chap NFSV2PROC_MKDIR, 196 1.164.2.2 chap NFSV2PROC_SYMLINK, 197 1.164.2.2 chap NFSV2PROC_CREATE, 198 1.164.2.2 chap NFSV2PROC_REMOVE, 199 1.164.2.2 chap NFSV2PROC_RMDIR, 200 1.164.2.2 chap NFSV2PROC_RENAME, 201 1.164.2.2 chap NFSV2PROC_LINK, 202 1.164.2.2 chap NFSV2PROC_READDIR, 203 1.164.2.2 chap NFSV2PROC_NOOP, 204 1.164.2.2 chap NFSV2PROC_STATFS, 205 1.164.2.2 chap NFSV2PROC_NOOP, 206 1.164.2.2 chap NFSV2PROC_NOOP, 207 1.164.2.2 chap NFSV2PROC_NOOP, 208 1.164.2.2 chap NFSV2PROC_NOOP, 209 1.164.2.2 chap NFSV2PROC_NOOP, 210 1.164.2.2 chap NFSV2PROC_NOOP, 211 1.164.2.2 chap NFSV2PROC_NOOP, 212 1.164.2.2 chap }; 213 1.164.2.2 chap 214 1.164.2.2 chap /* 215 1.164.2.2 chap * Maps errno values to nfs error numbers. 216 1.164.2.2 chap * Use NFSERR_IO as the catch all for ones not specifically defined in 217 1.164.2.2 chap * RFC 1094. 218 1.164.2.2 chap */ 219 1.164.2.2 chap static const u_char nfsrv_v2errmap[ELAST] = { 220 1.164.2.2 chap NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 221 1.164.2.2 chap NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 222 1.164.2.2 chap NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 223 1.164.2.2 chap NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 224 1.164.2.2 chap NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 225 1.164.2.2 chap NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 226 1.164.2.2 chap NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 227 1.164.2.2 chap NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 228 1.164.2.2 chap NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 229 1.164.2.2 chap NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 230 1.164.2.2 chap NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 231 1.164.2.2 chap NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 232 1.164.2.2 chap NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 233 1.164.2.2 chap NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 234 1.164.2.2 chap NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 235 1.164.2.2 chap NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 236 1.164.2.2 chap NFSERR_IO, NFSERR_IO, 237 1.164.2.2 chap }; 238 1.164.2.2 chap 239 1.164.2.2 chap /* 240 1.164.2.2 chap * Maps errno values to nfs error numbers. 241 1.164.2.2 chap * Although it is not obvious whether or not NFS clients really care if 242 1.164.2.2 chap * a returned error value is in the specified list for the procedure, the 243 1.164.2.2 chap * safest thing to do is filter them appropriately. For Version 2, the 244 1.164.2.2 chap * X/Open XNFS document is the only specification that defines error values 245 1.164.2.2 chap * for each RPC (The RFC simply lists all possible error values for all RPCs), 246 1.164.2.2 chap * so I have decided to not do this for Version 2. 247 1.164.2.2 chap * The first entry is the default error return and the rest are the valid 248 1.164.2.2 chap * errors for that RPC in increasing numeric order. 249 1.164.2.2 chap */ 250 1.164.2.2 chap static const short nfsv3err_null[] = { 251 1.164.2.2 chap 0, 252 1.164.2.2 chap 0, 253 1.164.2.2 chap }; 254 1.164.2.2 chap 255 1.164.2.2 chap static const short nfsv3err_getattr[] = { 256 1.164.2.2 chap NFSERR_IO, 257 1.164.2.2 chap NFSERR_IO, 258 1.164.2.2 chap NFSERR_STALE, 259 1.164.2.2 chap NFSERR_BADHANDLE, 260 1.164.2.2 chap NFSERR_SERVERFAULT, 261 1.164.2.2 chap 0, 262 1.164.2.2 chap }; 263 1.164.2.2 chap 264 1.164.2.2 chap static const short nfsv3err_setattr[] = { 265 1.164.2.2 chap NFSERR_IO, 266 1.164.2.2 chap NFSERR_PERM, 267 1.164.2.2 chap NFSERR_IO, 268 1.164.2.2 chap NFSERR_ACCES, 269 1.164.2.2 chap NFSERR_INVAL, 270 1.164.2.2 chap NFSERR_NOSPC, 271 1.164.2.2 chap NFSERR_ROFS, 272 1.164.2.2 chap NFSERR_DQUOT, 273 1.164.2.2 chap NFSERR_STALE, 274 1.164.2.2 chap NFSERR_BADHANDLE, 275 1.164.2.2 chap NFSERR_NOT_SYNC, 276 1.164.2.2 chap NFSERR_SERVERFAULT, 277 1.164.2.2 chap 0, 278 1.164.2.2 chap }; 279 1.164.2.2 chap 280 1.164.2.2 chap static const short nfsv3err_lookup[] = { 281 1.164.2.2 chap NFSERR_IO, 282 1.164.2.2 chap NFSERR_NOENT, 283 1.164.2.2 chap NFSERR_IO, 284 1.164.2.2 chap NFSERR_ACCES, 285 1.164.2.2 chap NFSERR_NOTDIR, 286 1.164.2.2 chap NFSERR_NAMETOL, 287 1.164.2.2 chap NFSERR_STALE, 288 1.164.2.2 chap NFSERR_BADHANDLE, 289 1.164.2.2 chap NFSERR_SERVERFAULT, 290 1.164.2.2 chap 0, 291 1.164.2.2 chap }; 292 1.164.2.2 chap 293 1.164.2.2 chap static const short nfsv3err_access[] = { 294 1.164.2.2 chap NFSERR_IO, 295 1.164.2.2 chap NFSERR_IO, 296 1.164.2.2 chap NFSERR_STALE, 297 1.164.2.2 chap NFSERR_BADHANDLE, 298 1.164.2.2 chap NFSERR_SERVERFAULT, 299 1.164.2.2 chap 0, 300 1.164.2.2 chap }; 301 1.164.2.2 chap 302 1.164.2.2 chap static const short nfsv3err_readlink[] = { 303 1.164.2.2 chap NFSERR_IO, 304 1.164.2.2 chap NFSERR_IO, 305 1.164.2.2 chap NFSERR_ACCES, 306 1.164.2.2 chap NFSERR_INVAL, 307 1.164.2.2 chap NFSERR_STALE, 308 1.164.2.2 chap NFSERR_BADHANDLE, 309 1.164.2.2 chap NFSERR_NOTSUPP, 310 1.164.2.2 chap NFSERR_SERVERFAULT, 311 1.164.2.2 chap 0, 312 1.164.2.2 chap }; 313 1.164.2.2 chap 314 1.164.2.2 chap static const short nfsv3err_read[] = { 315 1.164.2.2 chap NFSERR_IO, 316 1.164.2.2 chap NFSERR_IO, 317 1.164.2.2 chap NFSERR_NXIO, 318 1.164.2.2 chap NFSERR_ACCES, 319 1.164.2.2 chap NFSERR_INVAL, 320 1.164.2.2 chap NFSERR_STALE, 321 1.164.2.2 chap NFSERR_BADHANDLE, 322 1.164.2.2 chap NFSERR_SERVERFAULT, 323 1.164.2.2 chap NFSERR_JUKEBOX, 324 1.164.2.2 chap 0, 325 1.164.2.2 chap }; 326 1.164.2.2 chap 327 1.164.2.2 chap static const short nfsv3err_write[] = { 328 1.164.2.2 chap NFSERR_IO, 329 1.164.2.2 chap NFSERR_IO, 330 1.164.2.2 chap NFSERR_ACCES, 331 1.164.2.2 chap NFSERR_INVAL, 332 1.164.2.2 chap NFSERR_FBIG, 333 1.164.2.2 chap NFSERR_NOSPC, 334 1.164.2.2 chap NFSERR_ROFS, 335 1.164.2.2 chap NFSERR_DQUOT, 336 1.164.2.2 chap NFSERR_STALE, 337 1.164.2.2 chap NFSERR_BADHANDLE, 338 1.164.2.2 chap NFSERR_SERVERFAULT, 339 1.164.2.2 chap NFSERR_JUKEBOX, 340 1.164.2.2 chap 0, 341 1.164.2.2 chap }; 342 1.164.2.2 chap 343 1.164.2.2 chap static const short nfsv3err_create[] = { 344 1.164.2.2 chap NFSERR_IO, 345 1.164.2.2 chap NFSERR_IO, 346 1.164.2.2 chap NFSERR_ACCES, 347 1.164.2.2 chap NFSERR_EXIST, 348 1.164.2.2 chap NFSERR_NOTDIR, 349 1.164.2.2 chap NFSERR_NOSPC, 350 1.164.2.2 chap NFSERR_ROFS, 351 1.164.2.2 chap NFSERR_NAMETOL, 352 1.164.2.2 chap NFSERR_DQUOT, 353 1.164.2.2 chap NFSERR_STALE, 354 1.164.2.2 chap NFSERR_BADHANDLE, 355 1.164.2.2 chap NFSERR_NOTSUPP, 356 1.164.2.2 chap NFSERR_SERVERFAULT, 357 1.164.2.2 chap 0, 358 1.164.2.2 chap }; 359 1.164.2.2 chap 360 1.164.2.2 chap static const short nfsv3err_mkdir[] = { 361 1.164.2.2 chap NFSERR_IO, 362 1.164.2.2 chap NFSERR_IO, 363 1.164.2.2 chap NFSERR_ACCES, 364 1.164.2.2 chap NFSERR_EXIST, 365 1.164.2.2 chap NFSERR_NOTDIR, 366 1.164.2.2 chap NFSERR_NOSPC, 367 1.164.2.2 chap NFSERR_ROFS, 368 1.164.2.2 chap NFSERR_NAMETOL, 369 1.164.2.2 chap NFSERR_DQUOT, 370 1.164.2.2 chap NFSERR_STALE, 371 1.164.2.2 chap NFSERR_BADHANDLE, 372 1.164.2.2 chap NFSERR_NOTSUPP, 373 1.164.2.2 chap NFSERR_SERVERFAULT, 374 1.164.2.2 chap 0, 375 1.164.2.2 chap }; 376 1.164.2.2 chap 377 1.164.2.2 chap static const short nfsv3err_symlink[] = { 378 1.164.2.2 chap NFSERR_IO, 379 1.164.2.2 chap NFSERR_IO, 380 1.164.2.2 chap NFSERR_ACCES, 381 1.164.2.2 chap NFSERR_EXIST, 382 1.164.2.2 chap NFSERR_NOTDIR, 383 1.164.2.2 chap NFSERR_NOSPC, 384 1.164.2.2 chap NFSERR_ROFS, 385 1.164.2.2 chap NFSERR_NAMETOL, 386 1.164.2.2 chap NFSERR_DQUOT, 387 1.164.2.2 chap NFSERR_STALE, 388 1.164.2.2 chap NFSERR_BADHANDLE, 389 1.164.2.2 chap NFSERR_NOTSUPP, 390 1.164.2.2 chap NFSERR_SERVERFAULT, 391 1.164.2.2 chap 0, 392 1.164.2.2 chap }; 393 1.164.2.2 chap 394 1.164.2.2 chap static const short nfsv3err_mknod[] = { 395 1.164.2.2 chap NFSERR_IO, 396 1.164.2.2 chap NFSERR_IO, 397 1.164.2.2 chap NFSERR_ACCES, 398 1.164.2.2 chap NFSERR_EXIST, 399 1.164.2.2 chap NFSERR_NOTDIR, 400 1.164.2.2 chap NFSERR_NOSPC, 401 1.164.2.2 chap NFSERR_ROFS, 402 1.164.2.2 chap NFSERR_NAMETOL, 403 1.164.2.2 chap NFSERR_DQUOT, 404 1.164.2.2 chap NFSERR_STALE, 405 1.164.2.2 chap NFSERR_BADHANDLE, 406 1.164.2.2 chap NFSERR_NOTSUPP, 407 1.164.2.2 chap NFSERR_SERVERFAULT, 408 1.164.2.2 chap NFSERR_BADTYPE, 409 1.164.2.2 chap 0, 410 1.164.2.2 chap }; 411 1.164.2.2 chap 412 1.164.2.2 chap static const short nfsv3err_remove[] = { 413 1.164.2.2 chap NFSERR_IO, 414 1.164.2.2 chap NFSERR_NOENT, 415 1.164.2.2 chap NFSERR_IO, 416 1.164.2.2 chap NFSERR_ACCES, 417 1.164.2.2 chap NFSERR_NOTDIR, 418 1.164.2.2 chap NFSERR_ROFS, 419 1.164.2.2 chap NFSERR_NAMETOL, 420 1.164.2.2 chap NFSERR_STALE, 421 1.164.2.2 chap NFSERR_BADHANDLE, 422 1.164.2.2 chap NFSERR_SERVERFAULT, 423 1.164.2.2 chap 0, 424 1.164.2.2 chap }; 425 1.164.2.2 chap 426 1.164.2.2 chap static const short nfsv3err_rmdir[] = { 427 1.164.2.2 chap NFSERR_IO, 428 1.164.2.2 chap NFSERR_NOENT, 429 1.164.2.2 chap NFSERR_IO, 430 1.164.2.2 chap NFSERR_ACCES, 431 1.164.2.2 chap NFSERR_EXIST, 432 1.164.2.2 chap NFSERR_NOTDIR, 433 1.164.2.2 chap NFSERR_INVAL, 434 1.164.2.2 chap NFSERR_ROFS, 435 1.164.2.2 chap NFSERR_NAMETOL, 436 1.164.2.2 chap NFSERR_NOTEMPTY, 437 1.164.2.2 chap NFSERR_STALE, 438 1.164.2.2 chap NFSERR_BADHANDLE, 439 1.164.2.2 chap NFSERR_NOTSUPP, 440 1.164.2.2 chap NFSERR_SERVERFAULT, 441 1.164.2.2 chap 0, 442 1.164.2.2 chap }; 443 1.164.2.2 chap 444 1.164.2.2 chap static const short nfsv3err_rename[] = { 445 1.164.2.2 chap NFSERR_IO, 446 1.164.2.2 chap NFSERR_NOENT, 447 1.164.2.2 chap NFSERR_IO, 448 1.164.2.2 chap NFSERR_ACCES, 449 1.164.2.2 chap NFSERR_EXIST, 450 1.164.2.2 chap NFSERR_XDEV, 451 1.164.2.2 chap NFSERR_NOTDIR, 452 1.164.2.2 chap NFSERR_ISDIR, 453 1.164.2.2 chap NFSERR_INVAL, 454 1.164.2.2 chap NFSERR_NOSPC, 455 1.164.2.2 chap NFSERR_ROFS, 456 1.164.2.2 chap NFSERR_MLINK, 457 1.164.2.2 chap NFSERR_NAMETOL, 458 1.164.2.2 chap NFSERR_NOTEMPTY, 459 1.164.2.2 chap NFSERR_DQUOT, 460 1.164.2.2 chap NFSERR_STALE, 461 1.164.2.2 chap NFSERR_BADHANDLE, 462 1.164.2.2 chap NFSERR_NOTSUPP, 463 1.164.2.2 chap NFSERR_SERVERFAULT, 464 1.164.2.2 chap 0, 465 1.164.2.2 chap }; 466 1.164.2.2 chap 467 1.164.2.2 chap static const short nfsv3err_link[] = { 468 1.164.2.2 chap NFSERR_IO, 469 1.164.2.2 chap NFSERR_IO, 470 1.164.2.2 chap NFSERR_ACCES, 471 1.164.2.2 chap NFSERR_EXIST, 472 1.164.2.2 chap NFSERR_XDEV, 473 1.164.2.2 chap NFSERR_NOTDIR, 474 1.164.2.2 chap NFSERR_INVAL, 475 1.164.2.2 chap NFSERR_NOSPC, 476 1.164.2.2 chap NFSERR_ROFS, 477 1.164.2.2 chap NFSERR_MLINK, 478 1.164.2.2 chap NFSERR_NAMETOL, 479 1.164.2.2 chap NFSERR_DQUOT, 480 1.164.2.2 chap NFSERR_STALE, 481 1.164.2.2 chap NFSERR_BADHANDLE, 482 1.164.2.2 chap NFSERR_NOTSUPP, 483 1.164.2.2 chap NFSERR_SERVERFAULT, 484 1.164.2.2 chap 0, 485 1.164.2.2 chap }; 486 1.164.2.2 chap 487 1.164.2.2 chap static const short nfsv3err_readdir[] = { 488 1.164.2.2 chap NFSERR_IO, 489 1.164.2.2 chap NFSERR_IO, 490 1.164.2.2 chap NFSERR_ACCES, 491 1.164.2.2 chap NFSERR_NOTDIR, 492 1.164.2.2 chap NFSERR_STALE, 493 1.164.2.2 chap NFSERR_BADHANDLE, 494 1.164.2.2 chap NFSERR_BAD_COOKIE, 495 1.164.2.2 chap NFSERR_TOOSMALL, 496 1.164.2.2 chap NFSERR_SERVERFAULT, 497 1.164.2.2 chap 0, 498 1.164.2.2 chap }; 499 1.164.2.2 chap 500 1.164.2.2 chap static const short nfsv3err_readdirplus[] = { 501 1.164.2.2 chap NFSERR_IO, 502 1.164.2.2 chap NFSERR_IO, 503 1.164.2.2 chap NFSERR_ACCES, 504 1.164.2.2 chap NFSERR_NOTDIR, 505 1.164.2.2 chap NFSERR_STALE, 506 1.164.2.2 chap NFSERR_BADHANDLE, 507 1.164.2.2 chap NFSERR_BAD_COOKIE, 508 1.164.2.2 chap NFSERR_NOTSUPP, 509 1.164.2.2 chap NFSERR_TOOSMALL, 510 1.164.2.2 chap NFSERR_SERVERFAULT, 511 1.164.2.2 chap 0, 512 1.164.2.2 chap }; 513 1.164.2.2 chap 514 1.164.2.2 chap static const short nfsv3err_fsstat[] = { 515 1.164.2.2 chap NFSERR_IO, 516 1.164.2.2 chap NFSERR_IO, 517 1.164.2.2 chap NFSERR_STALE, 518 1.164.2.2 chap NFSERR_BADHANDLE, 519 1.164.2.2 chap NFSERR_SERVERFAULT, 520 1.164.2.2 chap 0, 521 1.164.2.2 chap }; 522 1.164.2.2 chap 523 1.164.2.2 chap static const short nfsv3err_fsinfo[] = { 524 1.164.2.2 chap NFSERR_STALE, 525 1.164.2.2 chap NFSERR_STALE, 526 1.164.2.2 chap NFSERR_BADHANDLE, 527 1.164.2.2 chap NFSERR_SERVERFAULT, 528 1.164.2.2 chap 0, 529 1.164.2.2 chap }; 530 1.164.2.2 chap 531 1.164.2.2 chap static const short nfsv3err_pathconf[] = { 532 1.164.2.2 chap NFSERR_STALE, 533 1.164.2.2 chap NFSERR_STALE, 534 1.164.2.2 chap NFSERR_BADHANDLE, 535 1.164.2.2 chap NFSERR_SERVERFAULT, 536 1.164.2.2 chap 0, 537 1.164.2.2 chap }; 538 1.164.2.2 chap 539 1.164.2.2 chap static const short nfsv3err_commit[] = { 540 1.164.2.2 chap NFSERR_IO, 541 1.164.2.2 chap NFSERR_IO, 542 1.164.2.2 chap NFSERR_STALE, 543 1.164.2.2 chap NFSERR_BADHANDLE, 544 1.164.2.2 chap NFSERR_SERVERFAULT, 545 1.164.2.2 chap 0, 546 1.164.2.2 chap }; 547 1.164.2.2 chap 548 1.164.2.2 chap static const short * const nfsrv_v3errmap[] = { 549 1.164.2.2 chap nfsv3err_null, 550 1.164.2.2 chap nfsv3err_getattr, 551 1.164.2.2 chap nfsv3err_setattr, 552 1.164.2.2 chap nfsv3err_lookup, 553 1.164.2.2 chap nfsv3err_access, 554 1.164.2.2 chap nfsv3err_readlink, 555 1.164.2.2 chap nfsv3err_read, 556 1.164.2.2 chap nfsv3err_write, 557 1.164.2.2 chap nfsv3err_create, 558 1.164.2.2 chap nfsv3err_mkdir, 559 1.164.2.2 chap nfsv3err_symlink, 560 1.164.2.2 chap nfsv3err_mknod, 561 1.164.2.2 chap nfsv3err_remove, 562 1.164.2.2 chap nfsv3err_rmdir, 563 1.164.2.2 chap nfsv3err_rename, 564 1.164.2.2 chap nfsv3err_link, 565 1.164.2.2 chap nfsv3err_readdir, 566 1.164.2.2 chap nfsv3err_readdirplus, 567 1.164.2.2 chap nfsv3err_fsstat, 568 1.164.2.2 chap nfsv3err_fsinfo, 569 1.164.2.2 chap nfsv3err_pathconf, 570 1.164.2.2 chap nfsv3err_commit, 571 1.164.2.2 chap }; 572 1.164.2.2 chap 573 1.164.2.2 chap extern struct nfsrtt nfsrtt; 574 1.164.2.2 chap extern time_t nqnfsstarttime; 575 1.164.2.2 chap extern int nqsrv_clockskew; 576 1.164.2.2 chap extern int nqsrv_writeslack; 577 1.164.2.2 chap extern int nqsrv_maxlease; 578 1.164.2.2 chap extern const int nqnfs_piggy[NFS_NPROCS]; 579 1.164.2.2 chap extern struct nfsnodehashhead *nfsnodehashtbl; 580 1.164.2.2 chap extern u_long nfsnodehash; 581 1.164.2.2 chap 582 1.164.2.2 chap u_long nfsdirhashmask; 583 1.164.2.2 chap 584 1.164.2.2 chap int nfs_webnamei __P((struct nameidata *, struct vnode *, struct proc *)); 585 1.164.2.2 chap 586 1.164.2.2 chap /* 587 1.164.2.2 chap * Create the header for an rpc request packet 588 1.164.2.2 chap * The hsiz is the size of the rest of the nfs request header. 589 1.164.2.2 chap * (just used to decide if a cluster is a good idea) 590 1.164.2.2 chap */ 591 1.164.2.2 chap struct mbuf * 592 1.164.2.2 chap nfsm_reqh(np, procid, hsiz, bposp) 593 1.164.2.2 chap struct nfsnode *np; 594 1.164.2.2 chap u_long procid; 595 1.164.2.2 chap int hsiz; 596 1.164.2.2 chap caddr_t *bposp; 597 1.164.2.2 chap { 598 1.164.2.2 chap struct mbuf *mb; 599 1.164.2.2 chap caddr_t bpos; 600 1.164.2.2 chap #ifndef NFS_V2_ONLY 601 1.164.2.2 chap struct nfsmount *nmp; 602 1.164.2.2 chap u_int32_t *tl; 603 1.164.2.2 chap int nqflag; 604 1.164.2.2 chap #endif 605 1.164.2.2 chap 606 1.164.2.2 chap mb = m_get(M_WAIT, MT_DATA); 607 1.164.2.2 chap MCLAIM(mb, &nfs_mowner); 608 1.164.2.2 chap if (hsiz >= MINCLSIZE) 609 1.164.2.2 chap m_clget(mb, M_WAIT); 610 1.164.2.2 chap mb->m_len = 0; 611 1.164.2.2 chap bpos = mtod(mb, caddr_t); 612 1.164.2.2 chap 613 1.164.2.2 chap #ifndef NFS_V2_ONLY 614 1.164.2.2 chap /* 615 1.164.2.2 chap * For NQNFS, add lease request. 616 1.164.2.2 chap */ 617 1.164.2.2 chap if (np) { 618 1.164.2.2 chap nmp = VFSTONFS(np->n_vnode->v_mount); 619 1.164.2.2 chap if (nmp->nm_flag & NFSMNT_NQNFS) { 620 1.164.2.2 chap nqflag = NQNFS_NEEDLEASE(np, procid); 621 1.164.2.2 chap if (nqflag) { 622 1.164.2.2 chap nfsm_build(tl, u_int32_t *, 2*NFSX_UNSIGNED); 623 1.164.2.2 chap *tl++ = txdr_unsigned(nqflag); 624 1.164.2.2 chap *tl = txdr_unsigned(nmp->nm_leaseterm); 625 1.164.2.2 chap } else { 626 1.164.2.2 chap nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 627 1.164.2.2 chap *tl = 0; 628 1.164.2.2 chap } 629 1.164.2.2 chap } 630 1.164.2.2 chap } 631 1.164.2.2 chap #endif 632 1.164.2.2 chap /* Finally, return values */ 633 1.164.2.2 chap *bposp = bpos; 634 1.164.2.2 chap return (mb); 635 1.164.2.2 chap } 636 1.164.2.2 chap 637 1.164.2.2 chap /* 638 1.164.2.2 chap * Build the RPC header and fill in the authorization info. 639 1.164.2.2 chap * The authorization string argument is only used when the credentials 640 1.164.2.2 chap * come from outside of the kernel. 641 1.164.2.2 chap * Returns the head of the mbuf list. 642 1.164.2.2 chap */ 643 1.164.2.2 chap struct mbuf * 644 1.164.2.2 chap nfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 645 1.164.2.2 chap verf_str, mrest, mrest_len, mbp, xidp) 646 1.164.2.2 chap kauth_cred_t cr; 647 1.164.2.2 chap int nmflag; 648 1.164.2.2 chap int procid; 649 1.164.2.2 chap int auth_type; 650 1.164.2.2 chap int auth_len; 651 1.164.2.2 chap char *auth_str; 652 1.164.2.2 chap int verf_len; 653 1.164.2.2 chap char *verf_str; 654 1.164.2.2 chap struct mbuf *mrest; 655 1.164.2.2 chap int mrest_len; 656 1.164.2.2 chap struct mbuf **mbp; 657 1.164.2.2 chap u_int32_t *xidp; 658 1.164.2.2 chap { 659 1.164.2.2 chap struct mbuf *mb; 660 1.164.2.2 chap u_int32_t *tl; 661 1.164.2.2 chap caddr_t bpos; 662 1.164.2.2 chap int i; 663 1.164.2.2 chap struct mbuf *mreq; 664 1.164.2.2 chap int siz, grpsiz, authsiz; 665 1.164.2.2 chap 666 1.164.2.2 chap authsiz = nfsm_rndup(auth_len); 667 1.164.2.2 chap mb = m_gethdr(M_WAIT, MT_DATA); 668 1.164.2.2 chap MCLAIM(mb, &nfs_mowner); 669 1.164.2.2 chap if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 670 1.164.2.2 chap m_clget(mb, M_WAIT); 671 1.164.2.2 chap } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 672 1.164.2.2 chap MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 673 1.164.2.2 chap } else { 674 1.164.2.2 chap MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 675 1.164.2.2 chap } 676 1.164.2.2 chap mb->m_len = 0; 677 1.164.2.2 chap mreq = mb; 678 1.164.2.2 chap bpos = mtod(mb, caddr_t); 679 1.164.2.2 chap 680 1.164.2.2 chap /* 681 1.164.2.2 chap * First the RPC header. 682 1.164.2.2 chap */ 683 1.164.2.2 chap nfsm_build(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 684 1.164.2.2 chap 685 1.164.2.2 chap *tl++ = *xidp = nfs_getxid(); 686 1.164.2.2 chap *tl++ = rpc_call; 687 1.164.2.2 chap *tl++ = rpc_vers; 688 1.164.2.2 chap if (nmflag & NFSMNT_NQNFS) { 689 1.164.2.2 chap *tl++ = txdr_unsigned(NQNFS_PROG); 690 1.164.2.2 chap *tl++ = txdr_unsigned(NQNFS_VER3); 691 1.164.2.2 chap } else { 692 1.164.2.2 chap *tl++ = txdr_unsigned(NFS_PROG); 693 1.164.2.2 chap if (nmflag & NFSMNT_NFSV3) 694 1.164.2.2 chap *tl++ = txdr_unsigned(NFS_VER3); 695 1.164.2.2 chap else 696 1.164.2.2 chap *tl++ = txdr_unsigned(NFS_VER2); 697 1.164.2.2 chap } 698 1.164.2.2 chap if (nmflag & NFSMNT_NFSV3) 699 1.164.2.2 chap *tl++ = txdr_unsigned(procid); 700 1.164.2.2 chap else 701 1.164.2.2 chap *tl++ = txdr_unsigned(nfsv2_procid[procid]); 702 1.164.2.2 chap 703 1.164.2.2 chap /* 704 1.164.2.2 chap * And then the authorization cred. 705 1.164.2.2 chap */ 706 1.164.2.2 chap *tl++ = txdr_unsigned(auth_type); 707 1.164.2.2 chap *tl = txdr_unsigned(authsiz); 708 1.164.2.2 chap switch (auth_type) { 709 1.164.2.2 chap case RPCAUTH_UNIX: 710 1.164.2.2 chap nfsm_build(tl, u_int32_t *, auth_len); 711 1.164.2.2 chap *tl++ = 0; /* stamp ?? */ 712 1.164.2.2 chap *tl++ = 0; /* NULL hostname */ 713 1.164.2.2 chap *tl++ = txdr_unsigned(kauth_cred_geteuid(cr)); 714 1.164.2.2 chap *tl++ = txdr_unsigned(kauth_cred_getegid(cr)); 715 1.164.2.2 chap grpsiz = (auth_len >> 2) - 5; 716 1.164.2.2 chap *tl++ = txdr_unsigned(grpsiz); 717 1.164.2.2 chap for (i = 0; i < grpsiz; i++) 718 1.164.2.2 chap *tl++ = txdr_unsigned(kauth_cred_group(cr, i)); /* XXX elad review */ 719 1.164.2.2 chap break; 720 1.164.2.2 chap case RPCAUTH_KERB4: 721 1.164.2.2 chap siz = auth_len; 722 1.164.2.2 chap while (siz > 0) { 723 1.164.2.2 chap if (M_TRAILINGSPACE(mb) == 0) { 724 1.164.2.2 chap struct mbuf *mb2; 725 1.164.2.2 chap mb2 = m_get(M_WAIT, MT_DATA); 726 1.164.2.2 chap MCLAIM(mb2, &nfs_mowner); 727 1.164.2.2 chap if (siz >= MINCLSIZE) 728 1.164.2.2 chap m_clget(mb2, M_WAIT); 729 1.164.2.2 chap mb->m_next = mb2; 730 1.164.2.2 chap mb = mb2; 731 1.164.2.2 chap mb->m_len = 0; 732 1.164.2.2 chap bpos = mtod(mb, caddr_t); 733 1.164.2.2 chap } 734 1.164.2.2 chap i = min(siz, M_TRAILINGSPACE(mb)); 735 1.164.2.2 chap memcpy(bpos, auth_str, i); 736 1.164.2.2 chap mb->m_len += i; 737 1.164.2.2 chap auth_str += i; 738 1.164.2.2 chap bpos += i; 739 1.164.2.2 chap siz -= i; 740 1.164.2.2 chap } 741 1.164.2.2 chap if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 742 1.164.2.2 chap for (i = 0; i < siz; i++) 743 1.164.2.2 chap *bpos++ = '\0'; 744 1.164.2.2 chap mb->m_len += siz; 745 1.164.2.2 chap } 746 1.164.2.2 chap break; 747 1.164.2.2 chap }; 748 1.164.2.2 chap 749 1.164.2.2 chap /* 750 1.164.2.2 chap * And the verifier... 751 1.164.2.2 chap */ 752 1.164.2.2 chap nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 753 1.164.2.2 chap if (verf_str) { 754 1.164.2.2 chap *tl++ = txdr_unsigned(RPCAUTH_KERB4); 755 1.164.2.2 chap *tl = txdr_unsigned(verf_len); 756 1.164.2.2 chap siz = verf_len; 757 1.164.2.2 chap while (siz > 0) { 758 1.164.2.2 chap if (M_TRAILINGSPACE(mb) == 0) { 759 1.164.2.2 chap struct mbuf *mb2; 760 1.164.2.2 chap mb2 = m_get(M_WAIT, MT_DATA); 761 1.164.2.2 chap MCLAIM(mb2, &nfs_mowner); 762 1.164.2.2 chap if (siz >= MINCLSIZE) 763 1.164.2.2 chap m_clget(mb2, M_WAIT); 764 1.164.2.2 chap mb->m_next = mb2; 765 1.164.2.2 chap mb = mb2; 766 1.164.2.2 chap mb->m_len = 0; 767 1.164.2.2 chap bpos = mtod(mb, caddr_t); 768 1.164.2.2 chap } 769 1.164.2.2 chap i = min(siz, M_TRAILINGSPACE(mb)); 770 1.164.2.2 chap memcpy(bpos, verf_str, i); 771 1.164.2.2 chap mb->m_len += i; 772 1.164.2.2 chap verf_str += i; 773 1.164.2.2 chap bpos += i; 774 1.164.2.2 chap siz -= i; 775 1.164.2.2 chap } 776 1.164.2.2 chap if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 777 1.164.2.2 chap for (i = 0; i < siz; i++) 778 1.164.2.2 chap *bpos++ = '\0'; 779 1.164.2.2 chap mb->m_len += siz; 780 1.164.2.2 chap } 781 1.164.2.2 chap } else { 782 1.164.2.2 chap *tl++ = txdr_unsigned(RPCAUTH_NULL); 783 1.164.2.2 chap *tl = 0; 784 1.164.2.2 chap } 785 1.164.2.2 chap mb->m_next = mrest; 786 1.164.2.2 chap mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 787 1.164.2.2 chap mreq->m_pkthdr.rcvif = (struct ifnet *)0; 788 1.164.2.2 chap *mbp = mb; 789 1.164.2.2 chap return (mreq); 790 1.164.2.2 chap } 791 1.164.2.2 chap 792 1.164.2.2 chap /* 793 1.164.2.2 chap * copies mbuf chain to the uio scatter/gather list 794 1.164.2.2 chap */ 795 1.164.2.2 chap int 796 1.164.2.2 chap nfsm_mbuftouio(mrep, uiop, siz, dpos) 797 1.164.2.2 chap struct mbuf **mrep; 798 1.164.2.2 chap struct uio *uiop; 799 1.164.2.2 chap int siz; 800 1.164.2.2 chap caddr_t *dpos; 801 1.164.2.2 chap { 802 1.164.2.2 chap char *mbufcp, *uiocp; 803 1.164.2.2 chap int xfer, left, len; 804 1.164.2.2 chap struct mbuf *mp; 805 1.164.2.2 chap long uiosiz, rem; 806 1.164.2.2 chap int error = 0; 807 1.164.2.2 chap 808 1.164.2.2 chap mp = *mrep; 809 1.164.2.2 chap mbufcp = *dpos; 810 1.164.2.2 chap len = mtod(mp, caddr_t)+mp->m_len-mbufcp; 811 1.164.2.2 chap rem = nfsm_rndup(siz)-siz; 812 1.164.2.2 chap while (siz > 0) { 813 1.164.2.2 chap if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 814 1.164.2.2 chap return (EFBIG); 815 1.164.2.2 chap left = uiop->uio_iov->iov_len; 816 1.164.2.2 chap uiocp = uiop->uio_iov->iov_base; 817 1.164.2.2 chap if (left > siz) 818 1.164.2.2 chap left = siz; 819 1.164.2.2 chap uiosiz = left; 820 1.164.2.2 chap while (left > 0) { 821 1.164.2.2 chap while (len == 0) { 822 1.164.2.2 chap mp = mp->m_next; 823 1.164.2.2 chap if (mp == NULL) 824 1.164.2.2 chap return (EBADRPC); 825 1.164.2.2 chap mbufcp = mtod(mp, caddr_t); 826 1.164.2.2 chap len = mp->m_len; 827 1.164.2.2 chap } 828 1.164.2.2 chap xfer = (left > len) ? len : left; 829 1.164.2.2 chap error = copyout_vmspace(uiop->uio_vmspace, mbufcp, 830 1.164.2.2 chap uiocp, xfer); 831 1.164.2.2 chap if (error) { 832 1.164.2.2 chap return error; 833 1.164.2.2 chap } 834 1.164.2.2 chap left -= xfer; 835 1.164.2.2 chap len -= xfer; 836 1.164.2.2 chap mbufcp += xfer; 837 1.164.2.2 chap uiocp += xfer; 838 1.164.2.2 chap uiop->uio_offset += xfer; 839 1.164.2.2 chap uiop->uio_resid -= xfer; 840 1.164.2.2 chap } 841 1.164.2.2 chap if (uiop->uio_iov->iov_len <= siz) { 842 1.164.2.2 chap uiop->uio_iovcnt--; 843 1.164.2.2 chap uiop->uio_iov++; 844 1.164.2.2 chap } else { 845 1.164.2.2 chap uiop->uio_iov->iov_base = 846 1.164.2.2 chap (caddr_t)uiop->uio_iov->iov_base + uiosiz; 847 1.164.2.2 chap uiop->uio_iov->iov_len -= uiosiz; 848 1.164.2.2 chap } 849 1.164.2.2 chap siz -= uiosiz; 850 1.164.2.2 chap } 851 1.164.2.2 chap *dpos = mbufcp; 852 1.164.2.2 chap *mrep = mp; 853 1.164.2.2 chap if (rem > 0) { 854 1.164.2.2 chap if (len < rem) 855 1.164.2.2 chap error = nfs_adv(mrep, dpos, rem, len); 856 1.164.2.2 chap else 857 1.164.2.2 chap *dpos += rem; 858 1.164.2.2 chap } 859 1.164.2.2 chap return (error); 860 1.164.2.2 chap } 861 1.164.2.2 chap 862 1.164.2.2 chap /* 863 1.164.2.2 chap * copies a uio scatter/gather list to an mbuf chain. 864 1.164.2.2 chap * NOTE: can ony handle iovcnt == 1 865 1.164.2.2 chap */ 866 1.164.2.2 chap int 867 1.164.2.2 chap nfsm_uiotombuf(uiop, mq, siz, bpos) 868 1.164.2.2 chap struct uio *uiop; 869 1.164.2.2 chap struct mbuf **mq; 870 1.164.2.2 chap int siz; 871 1.164.2.2 chap caddr_t *bpos; 872 1.164.2.2 chap { 873 1.164.2.2 chap char *uiocp; 874 1.164.2.2 chap struct mbuf *mp, *mp2; 875 1.164.2.2 chap int xfer, left, mlen; 876 1.164.2.2 chap int uiosiz, clflg, rem; 877 1.164.2.2 chap char *cp; 878 1.164.2.2 chap int error; 879 1.164.2.2 chap 880 1.164.2.2 chap #ifdef DIAGNOSTIC 881 1.164.2.2 chap if (uiop->uio_iovcnt != 1) 882 1.164.2.2 chap panic("nfsm_uiotombuf: iovcnt != 1"); 883 1.164.2.2 chap #endif 884 1.164.2.2 chap 885 1.164.2.2 chap if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 886 1.164.2.2 chap clflg = 1; 887 1.164.2.2 chap else 888 1.164.2.2 chap clflg = 0; 889 1.164.2.2 chap rem = nfsm_rndup(siz)-siz; 890 1.164.2.2 chap mp = mp2 = *mq; 891 1.164.2.2 chap while (siz > 0) { 892 1.164.2.2 chap left = uiop->uio_iov->iov_len; 893 1.164.2.2 chap uiocp = uiop->uio_iov->iov_base; 894 1.164.2.2 chap if (left > siz) 895 1.164.2.2 chap left = siz; 896 1.164.2.2 chap uiosiz = left; 897 1.164.2.2 chap while (left > 0) { 898 1.164.2.2 chap mlen = M_TRAILINGSPACE(mp); 899 1.164.2.2 chap if (mlen == 0) { 900 1.164.2.2 chap mp = m_get(M_WAIT, MT_DATA); 901 1.164.2.2 chap MCLAIM(mp, &nfs_mowner); 902 1.164.2.2 chap if (clflg) 903 1.164.2.2 chap m_clget(mp, M_WAIT); 904 1.164.2.2 chap mp->m_len = 0; 905 1.164.2.2 chap mp2->m_next = mp; 906 1.164.2.2 chap mp2 = mp; 907 1.164.2.2 chap mlen = M_TRAILINGSPACE(mp); 908 1.164.2.2 chap } 909 1.164.2.2 chap xfer = (left > mlen) ? mlen : left; 910 1.164.2.2 chap cp = mtod(mp, caddr_t) + mp->m_len; 911 1.164.2.2 chap error = copyin_vmspace(uiop->uio_vmspace, uiocp, cp, 912 1.164.2.2 chap xfer); 913 1.164.2.2 chap if (error) { 914 1.164.2.2 chap /* XXX */ 915 1.164.2.2 chap } 916 1.164.2.2 chap mp->m_len += xfer; 917 1.164.2.2 chap left -= xfer; 918 1.164.2.2 chap uiocp += xfer; 919 1.164.2.2 chap uiop->uio_offset += xfer; 920 1.164.2.2 chap uiop->uio_resid -= xfer; 921 1.164.2.2 chap } 922 1.164.2.2 chap uiop->uio_iov->iov_base = (caddr_t)uiop->uio_iov->iov_base + 923 1.164.2.2 chap uiosiz; 924 1.164.2.2 chap uiop->uio_iov->iov_len -= uiosiz; 925 1.164.2.2 chap siz -= uiosiz; 926 1.164.2.2 chap } 927 1.164.2.2 chap if (rem > 0) { 928 1.164.2.2 chap if (rem > M_TRAILINGSPACE(mp)) { 929 1.164.2.2 chap mp = m_get(M_WAIT, MT_DATA); 930 1.164.2.2 chap MCLAIM(mp, &nfs_mowner); 931 1.164.2.2 chap mp->m_len = 0; 932 1.164.2.2 chap mp2->m_next = mp; 933 1.164.2.2 chap } 934 1.164.2.2 chap cp = mtod(mp, caddr_t) + mp->m_len; 935 1.164.2.2 chap for (left = 0; left < rem; left++) 936 1.164.2.2 chap *cp++ = '\0'; 937 1.164.2.2 chap mp->m_len += rem; 938 1.164.2.2 chap *bpos = cp; 939 1.164.2.2 chap } else 940 1.164.2.2 chap *bpos = mtod(mp, caddr_t)+mp->m_len; 941 1.164.2.2 chap *mq = mp; 942 1.164.2.2 chap return (0); 943 1.164.2.2 chap } 944 1.164.2.2 chap 945 1.164.2.2 chap /* 946 1.164.2.2 chap * Get at least "siz" bytes of correctly aligned data. 947 1.164.2.2 chap * When called the mbuf pointers are not necessarily correct, 948 1.164.2.2 chap * dsosp points to what ought to be in m_data and left contains 949 1.164.2.2 chap * what ought to be in m_len. 950 1.164.2.2 chap * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 951 1.164.2.2 chap * cases. (The macros use the vars. dpos and dpos2) 952 1.164.2.2 chap */ 953 1.164.2.2 chap int 954 1.164.2.2 chap nfsm_disct(mdp, dposp, siz, left, cp2) 955 1.164.2.2 chap struct mbuf **mdp; 956 1.164.2.2 chap caddr_t *dposp; 957 1.164.2.2 chap int siz; 958 1.164.2.2 chap int left; 959 1.164.2.2 chap caddr_t *cp2; 960 1.164.2.2 chap { 961 1.164.2.2 chap struct mbuf *m1, *m2; 962 1.164.2.2 chap struct mbuf *havebuf = NULL; 963 1.164.2.2 chap caddr_t src = *dposp; 964 1.164.2.2 chap caddr_t dst; 965 1.164.2.2 chap int len; 966 1.164.2.2 chap 967 1.164.2.2 chap #ifdef DEBUG 968 1.164.2.2 chap if (left < 0) 969 1.164.2.2 chap panic("nfsm_disct: left < 0"); 970 1.164.2.2 chap #endif 971 1.164.2.2 chap m1 = *mdp; 972 1.164.2.2 chap /* 973 1.164.2.2 chap * Skip through the mbuf chain looking for an mbuf with 974 1.164.2.2 chap * some data. If the first mbuf found has enough data 975 1.164.2.2 chap * and it is correctly aligned return it. 976 1.164.2.2 chap */ 977 1.164.2.2 chap while (left == 0) { 978 1.164.2.2 chap havebuf = m1; 979 1.164.2.2 chap *mdp = m1 = m1->m_next; 980 1.164.2.2 chap if (m1 == NULL) 981 1.164.2.2 chap return (EBADRPC); 982 1.164.2.2 chap src = mtod(m1, caddr_t); 983 1.164.2.2 chap left = m1->m_len; 984 1.164.2.2 chap /* 985 1.164.2.2 chap * If we start a new mbuf and it is big enough 986 1.164.2.2 chap * and correctly aligned just return it, don't 987 1.164.2.2 chap * do any pull up. 988 1.164.2.2 chap */ 989 1.164.2.2 chap if (left >= siz && nfsm_aligned(src)) { 990 1.164.2.2 chap *cp2 = src; 991 1.164.2.2 chap *dposp = src + siz; 992 1.164.2.2 chap return (0); 993 1.164.2.2 chap } 994 1.164.2.2 chap } 995 1.164.2.2 chap if (m1->m_flags & M_EXT) { 996 1.164.2.2 chap if (havebuf) { 997 1.164.2.2 chap /* If the first mbuf with data has external data 998 1.164.2.2 chap * and there is a previous empty mbuf use it 999 1.164.2.2 chap * to move the data into. 1000 1.164.2.2 chap */ 1001 1.164.2.2 chap m2 = m1; 1002 1.164.2.2 chap *mdp = m1 = havebuf; 1003 1.164.2.2 chap if (m1->m_flags & M_EXT) { 1004 1.164.2.2 chap MEXTREMOVE(m1); 1005 1.164.2.2 chap } 1006 1.164.2.2 chap } else { 1007 1.164.2.2 chap /* 1008 1.164.2.2 chap * If the first mbuf has a external data 1009 1.164.2.2 chap * and there is no previous empty mbuf 1010 1.164.2.2 chap * allocate a new mbuf and move the external 1011 1.164.2.2 chap * data to the new mbuf. Also make the first 1012 1.164.2.2 chap * mbuf look empty. 1013 1.164.2.2 chap */ 1014 1.164.2.2 chap m2 = m_get(M_WAIT, MT_DATA); 1015 1.164.2.2 chap m2->m_ext = m1->m_ext; 1016 1.164.2.2 chap m2->m_data = src; 1017 1.164.2.2 chap m2->m_len = left; 1018 1.164.2.2 chap MCLADDREFERENCE(m1, m2); 1019 1.164.2.2 chap MEXTREMOVE(m1); 1020 1.164.2.2 chap m2->m_next = m1->m_next; 1021 1.164.2.2 chap m1->m_next = m2; 1022 1.164.2.2 chap } 1023 1.164.2.2 chap m1->m_len = 0; 1024 1.164.2.2 chap if (m1->m_flags & M_PKTHDR) 1025 1.164.2.2 chap dst = m1->m_pktdat; 1026 1.164.2.2 chap else 1027 1.164.2.2 chap dst = m1->m_dat; 1028 1.164.2.2 chap m1->m_data = dst; 1029 1.164.2.2 chap } else { 1030 1.164.2.2 chap /* 1031 1.164.2.2 chap * If the first mbuf has no external data 1032 1.164.2.2 chap * move the data to the front of the mbuf. 1033 1.164.2.2 chap */ 1034 1.164.2.2 chap if (m1->m_flags & M_PKTHDR) 1035 1.164.2.2 chap dst = m1->m_pktdat; 1036 1.164.2.2 chap else 1037 1.164.2.2 chap dst = m1->m_dat; 1038 1.164.2.2 chap m1->m_data = dst; 1039 1.164.2.2 chap if (dst != src) 1040 1.164.2.2 chap memmove(dst, src, left); 1041 1.164.2.2 chap dst += left; 1042 1.164.2.2 chap m1->m_len = left; 1043 1.164.2.2 chap m2 = m1->m_next; 1044 1.164.2.2 chap } 1045 1.164.2.2 chap *cp2 = m1->m_data; 1046 1.164.2.2 chap *dposp = mtod(m1, caddr_t) + siz; 1047 1.164.2.2 chap /* 1048 1.164.2.2 chap * Loop through mbufs pulling data up into first mbuf until 1049 1.164.2.2 chap * the first mbuf is full or there is no more data to 1050 1.164.2.2 chap * pullup. 1051 1.164.2.2 chap */ 1052 1.164.2.2 chap while ((len = M_TRAILINGSPACE(m1)) != 0 && m2) { 1053 1.164.2.2 chap if ((len = min(len, m2->m_len)) != 0) 1054 1.164.2.2 chap memcpy(dst, m2->m_data, len); 1055 1.164.2.2 chap m1->m_len += len; 1056 1.164.2.2 chap dst += len; 1057 1.164.2.2 chap m2->m_data += len; 1058 1.164.2.2 chap m2->m_len -= len; 1059 1.164.2.2 chap m2 = m2->m_next; 1060 1.164.2.2 chap } 1061 1.164.2.2 chap if (m1->m_len < siz) 1062 1.164.2.2 chap return (EBADRPC); 1063 1.164.2.2 chap return (0); 1064 1.164.2.2 chap } 1065 1.164.2.2 chap 1066 1.164.2.2 chap /* 1067 1.164.2.2 chap * Advance the position in the mbuf chain. 1068 1.164.2.2 chap */ 1069 1.164.2.2 chap int 1070 1.164.2.2 chap nfs_adv(mdp, dposp, offs, left) 1071 1.164.2.2 chap struct mbuf **mdp; 1072 1.164.2.2 chap caddr_t *dposp; 1073 1.164.2.2 chap int offs; 1074 1.164.2.2 chap int left; 1075 1.164.2.2 chap { 1076 1.164.2.2 chap struct mbuf *m; 1077 1.164.2.2 chap int s; 1078 1.164.2.2 chap 1079 1.164.2.2 chap m = *mdp; 1080 1.164.2.2 chap s = left; 1081 1.164.2.2 chap while (s < offs) { 1082 1.164.2.2 chap offs -= s; 1083 1.164.2.2 chap m = m->m_next; 1084 1.164.2.2 chap if (m == NULL) 1085 1.164.2.2 chap return (EBADRPC); 1086 1.164.2.2 chap s = m->m_len; 1087 1.164.2.2 chap } 1088 1.164.2.2 chap *mdp = m; 1089 1.164.2.2 chap *dposp = mtod(m, caddr_t)+offs; 1090 1.164.2.2 chap return (0); 1091 1.164.2.2 chap } 1092 1.164.2.2 chap 1093 1.164.2.2 chap /* 1094 1.164.2.2 chap * Copy a string into mbufs for the hard cases... 1095 1.164.2.2 chap */ 1096 1.164.2.2 chap int 1097 1.164.2.2 chap nfsm_strtmbuf(mb, bpos, cp, siz) 1098 1.164.2.2 chap struct mbuf **mb; 1099 1.164.2.2 chap char **bpos; 1100 1.164.2.2 chap const char *cp; 1101 1.164.2.2 chap long siz; 1102 1.164.2.2 chap { 1103 1.164.2.2 chap struct mbuf *m1 = NULL, *m2; 1104 1.164.2.2 chap long left, xfer, len, tlen; 1105 1.164.2.2 chap u_int32_t *tl; 1106 1.164.2.2 chap int putsize; 1107 1.164.2.2 chap 1108 1.164.2.2 chap putsize = 1; 1109 1.164.2.2 chap m2 = *mb; 1110 1.164.2.2 chap left = M_TRAILINGSPACE(m2); 1111 1.164.2.2 chap if (left > 0) { 1112 1.164.2.2 chap tl = ((u_int32_t *)(*bpos)); 1113 1.164.2.2 chap *tl++ = txdr_unsigned(siz); 1114 1.164.2.2 chap putsize = 0; 1115 1.164.2.2 chap left -= NFSX_UNSIGNED; 1116 1.164.2.2 chap m2->m_len += NFSX_UNSIGNED; 1117 1.164.2.2 chap if (left > 0) { 1118 1.164.2.2 chap memcpy((caddr_t) tl, cp, left); 1119 1.164.2.2 chap siz -= left; 1120 1.164.2.2 chap cp += left; 1121 1.164.2.2 chap m2->m_len += left; 1122 1.164.2.2 chap left = 0; 1123 1.164.2.2 chap } 1124 1.164.2.2 chap } 1125 1.164.2.2 chap /* Loop around adding mbufs */ 1126 1.164.2.2 chap while (siz > 0) { 1127 1.164.2.2 chap m1 = m_get(M_WAIT, MT_DATA); 1128 1.164.2.2 chap MCLAIM(m1, &nfs_mowner); 1129 1.164.2.2 chap if (siz > MLEN) 1130 1.164.2.2 chap m_clget(m1, M_WAIT); 1131 1.164.2.2 chap m1->m_len = NFSMSIZ(m1); 1132 1.164.2.2 chap m2->m_next = m1; 1133 1.164.2.2 chap m2 = m1; 1134 1.164.2.2 chap tl = mtod(m1, u_int32_t *); 1135 1.164.2.2 chap tlen = 0; 1136 1.164.2.2 chap if (putsize) { 1137 1.164.2.2 chap *tl++ = txdr_unsigned(siz); 1138 1.164.2.2 chap m1->m_len -= NFSX_UNSIGNED; 1139 1.164.2.2 chap tlen = NFSX_UNSIGNED; 1140 1.164.2.2 chap putsize = 0; 1141 1.164.2.2 chap } 1142 1.164.2.2 chap if (siz < m1->m_len) { 1143 1.164.2.2 chap len = nfsm_rndup(siz); 1144 1.164.2.2 chap xfer = siz; 1145 1.164.2.2 chap if (xfer < len) 1146 1.164.2.2 chap *(tl+(xfer>>2)) = 0; 1147 1.164.2.2 chap } else { 1148 1.164.2.2 chap xfer = len = m1->m_len; 1149 1.164.2.2 chap } 1150 1.164.2.2 chap memcpy((caddr_t) tl, cp, xfer); 1151 1.164.2.2 chap m1->m_len = len+tlen; 1152 1.164.2.2 chap siz -= xfer; 1153 1.164.2.2 chap cp += xfer; 1154 1.164.2.2 chap } 1155 1.164.2.2 chap *mb = m1; 1156 1.164.2.2 chap *bpos = mtod(m1, caddr_t)+m1->m_len; 1157 1.164.2.2 chap return (0); 1158 1.164.2.2 chap } 1159 1.164.2.2 chap 1160 1.164.2.2 chap /* 1161 1.164.2.2 chap * Directory caching routines. They work as follows: 1162 1.164.2.2 chap * - a cache is maintained per VDIR nfsnode. 1163 1.164.2.2 chap * - for each offset cookie that is exported to userspace, and can 1164 1.164.2.2 chap * thus be thrown back at us as an offset to VOP_READDIR, store 1165 1.164.2.2 chap * information in the cache. 1166 1.164.2.2 chap * - cached are: 1167 1.164.2.2 chap * - cookie itself 1168 1.164.2.2 chap * - blocknumber (essentially just a search key in the buffer cache) 1169 1.164.2.2 chap * - entry number in block. 1170 1.164.2.2 chap * - offset cookie of block in which this entry is stored 1171 1.164.2.2 chap * - 32 bit cookie if NFSMNT_XLATECOOKIE is used. 1172 1.164.2.2 chap * - entries are looked up in a hash table 1173 1.164.2.2 chap * - also maintained is an LRU list of entries, used to determine 1174 1.164.2.2 chap * which ones to delete if the cache grows too large. 1175 1.164.2.2 chap * - if 32 <-> 64 translation mode is requested for a filesystem, 1176 1.164.2.2 chap * the cache also functions as a translation table 1177 1.164.2.2 chap * - in the translation case, invalidating the cache does not mean 1178 1.164.2.2 chap * flushing it, but just marking entries as invalid, except for 1179 1.164.2.2 chap * the <64bit cookie, 32bitcookie> pair which is still valid, to 1180 1.164.2.2 chap * still be able to use the cache as a translation table. 1181 1.164.2.2 chap * - 32 bit cookies are uniquely created by combining the hash table 1182 1.164.2.2 chap * entry value, and one generation count per hash table entry, 1183 1.164.2.2 chap * incremented each time an entry is appended to the chain. 1184 1.164.2.2 chap * - the cache is invalidated each time a direcory is modified 1185 1.164.2.2 chap * - sanity checks are also done; if an entry in a block turns 1186 1.164.2.2 chap * out not to have a matching cookie, the cache is invalidated 1187 1.164.2.2 chap * and a new block starting from the wanted offset is fetched from 1188 1.164.2.2 chap * the server. 1189 1.164.2.2 chap * - directory entries as read from the server are extended to contain 1190 1.164.2.2 chap * the 64bit and, optionally, the 32bit cookies, for sanity checking 1191 1.164.2.2 chap * the cache and exporting them to userspace through the cookie 1192 1.164.2.2 chap * argument to VOP_READDIR. 1193 1.164.2.2 chap */ 1194 1.164.2.2 chap 1195 1.164.2.2 chap u_long 1196 1.164.2.2 chap nfs_dirhash(off) 1197 1.164.2.2 chap off_t off; 1198 1.164.2.2 chap { 1199 1.164.2.2 chap int i; 1200 1.164.2.2 chap char *cp = (char *)&off; 1201 1.164.2.2 chap u_long sum = 0L; 1202 1.164.2.2 chap 1203 1.164.2.2 chap for (i = 0 ; i < sizeof (off); i++) 1204 1.164.2.2 chap sum += *cp++; 1205 1.164.2.2 chap 1206 1.164.2.2 chap return sum; 1207 1.164.2.2 chap } 1208 1.164.2.2 chap 1209 1.164.2.2 chap #define _NFSDC_MTX(np) (&NFSTOV(np)->v_interlock) 1210 1.164.2.2 chap #define NFSDC_LOCK(np) simple_lock(_NFSDC_MTX(np)) 1211 1.164.2.2 chap #define NFSDC_UNLOCK(np) simple_unlock(_NFSDC_MTX(np)) 1212 1.164.2.2 chap #define NFSDC_ASSERT_LOCKED(np) LOCK_ASSERT(simple_lock_held(_NFSDC_MTX(np))) 1213 1.164.2.2 chap 1214 1.164.2.2 chap void 1215 1.164.2.2 chap nfs_initdircache(vp) 1216 1.164.2.2 chap struct vnode *vp; 1217 1.164.2.2 chap { 1218 1.164.2.2 chap struct nfsnode *np = VTONFS(vp); 1219 1.164.2.2 chap struct nfsdirhashhead *dircache; 1220 1.164.2.2 chap 1221 1.164.2.2 chap dircache = hashinit(NFS_DIRHASHSIZ, HASH_LIST, M_NFSDIROFF, 1222 1.164.2.2 chap M_WAITOK, &nfsdirhashmask); 1223 1.164.2.2 chap 1224 1.164.2.2 chap NFSDC_LOCK(np); 1225 1.164.2.2 chap if (np->n_dircache == NULL) { 1226 1.164.2.2 chap np->n_dircachesize = 0; 1227 1.164.2.2 chap np->n_dircache = dircache; 1228 1.164.2.2 chap dircache = NULL; 1229 1.164.2.2 chap TAILQ_INIT(&np->n_dirchain); 1230 1.164.2.2 chap } 1231 1.164.2.2 chap NFSDC_UNLOCK(np); 1232 1.164.2.2 chap if (dircache) 1233 1.164.2.2 chap hashdone(dircache, M_NFSDIROFF); 1234 1.164.2.2 chap } 1235 1.164.2.2 chap 1236 1.164.2.2 chap void 1237 1.164.2.2 chap nfs_initdirxlatecookie(vp) 1238 1.164.2.2 chap struct vnode *vp; 1239 1.164.2.2 chap { 1240 1.164.2.2 chap struct nfsnode *np = VTONFS(vp); 1241 1.164.2.2 chap unsigned *dirgens; 1242 1.164.2.2 chap 1243 1.164.2.2 chap KASSERT(VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_XLATECOOKIE); 1244 1.164.2.2 chap 1245 1.164.2.2 chap dirgens = malloc(NFS_DIRHASHSIZ * sizeof (unsigned), M_NFSDIROFF, 1246 1.164.2.2 chap M_WAITOK|M_ZERO); 1247 1.164.2.2 chap NFSDC_LOCK(np); 1248 1.164.2.2 chap if (np->n_dirgens == NULL) { 1249 1.164.2.2 chap np->n_dirgens = dirgens; 1250 1.164.2.2 chap dirgens = NULL; 1251 1.164.2.2 chap } 1252 1.164.2.2 chap NFSDC_UNLOCK(np); 1253 1.164.2.2 chap if (dirgens) 1254 1.164.2.2 chap free(dirgens, M_NFSDIROFF); 1255 1.164.2.2 chap } 1256 1.164.2.2 chap 1257 1.164.2.2 chap static const struct nfsdircache dzero; 1258 1.164.2.2 chap 1259 1.164.2.2 chap static void nfs_unlinkdircache __P((struct nfsnode *np, struct nfsdircache *)); 1260 1.164.2.2 chap static void nfs_putdircache_unlocked __P((struct nfsnode *, 1261 1.164.2.2 chap struct nfsdircache *)); 1262 1.164.2.2 chap 1263 1.164.2.2 chap static void 1264 1.164.2.2 chap nfs_unlinkdircache(np, ndp) 1265 1.164.2.2 chap struct nfsnode *np; 1266 1.164.2.2 chap struct nfsdircache *ndp; 1267 1.164.2.2 chap { 1268 1.164.2.2 chap 1269 1.164.2.2 chap NFSDC_ASSERT_LOCKED(np); 1270 1.164.2.2 chap KASSERT(ndp != &dzero); 1271 1.164.2.2 chap 1272 1.164.2.2 chap if (LIST_NEXT(ndp, dc_hash) == (void *)-1) 1273 1.164.2.2 chap return; 1274 1.164.2.2 chap 1275 1.164.2.2 chap TAILQ_REMOVE(&np->n_dirchain, ndp, dc_chain); 1276 1.164.2.2 chap LIST_REMOVE(ndp, dc_hash); 1277 1.164.2.2 chap LIST_NEXT(ndp, dc_hash) = (void *)-1; /* mark as unlinked */ 1278 1.164.2.2 chap 1279 1.164.2.2 chap nfs_putdircache_unlocked(np, ndp); 1280 1.164.2.2 chap } 1281 1.164.2.2 chap 1282 1.164.2.2 chap void 1283 1.164.2.2 chap nfs_putdircache(np, ndp) 1284 1.164.2.2 chap struct nfsnode *np; 1285 1.164.2.2 chap struct nfsdircache *ndp; 1286 1.164.2.2 chap { 1287 1.164.2.2 chap int ref; 1288 1.164.2.2 chap 1289 1.164.2.2 chap if (ndp == &dzero) 1290 1.164.2.2 chap return; 1291 1.164.2.2 chap 1292 1.164.2.2 chap KASSERT(ndp->dc_refcnt > 0); 1293 1.164.2.2 chap NFSDC_LOCK(np); 1294 1.164.2.2 chap ref = --ndp->dc_refcnt; 1295 1.164.2.2 chap NFSDC_UNLOCK(np); 1296 1.164.2.2 chap 1297 1.164.2.2 chap if (ref == 0) 1298 1.164.2.2 chap free(ndp, M_NFSDIROFF); 1299 1.164.2.2 chap } 1300 1.164.2.2 chap 1301 1.164.2.2 chap static void 1302 1.164.2.2 chap nfs_putdircache_unlocked(np, ndp) 1303 1.164.2.2 chap struct nfsnode *np; 1304 1.164.2.2 chap struct nfsdircache *ndp; 1305 1.164.2.2 chap { 1306 1.164.2.2 chap int ref; 1307 1.164.2.2 chap 1308 1.164.2.2 chap NFSDC_ASSERT_LOCKED(np); 1309 1.164.2.2 chap 1310 1.164.2.2 chap if (ndp == &dzero) 1311 1.164.2.2 chap return; 1312 1.164.2.2 chap 1313 1.164.2.2 chap KASSERT(ndp->dc_refcnt > 0); 1314 1.164.2.2 chap ref = --ndp->dc_refcnt; 1315 1.164.2.2 chap if (ref == 0) 1316 1.164.2.2 chap free(ndp, M_NFSDIROFF); 1317 1.164.2.2 chap } 1318 1.164.2.2 chap 1319 1.164.2.2 chap struct nfsdircache * 1320 1.164.2.2 chap nfs_searchdircache(vp, off, do32, hashent) 1321 1.164.2.2 chap struct vnode *vp; 1322 1.164.2.2 chap off_t off; 1323 1.164.2.2 chap int do32; 1324 1.164.2.2 chap int *hashent; 1325 1.164.2.2 chap { 1326 1.164.2.2 chap struct nfsdirhashhead *ndhp; 1327 1.164.2.2 chap struct nfsdircache *ndp = NULL; 1328 1.164.2.2 chap struct nfsnode *np = VTONFS(vp); 1329 1.164.2.2 chap unsigned ent; 1330 1.164.2.2 chap 1331 1.164.2.2 chap /* 1332 1.164.2.2 chap * Zero is always a valid cookie. 1333 1.164.2.2 chap */ 1334 1.164.2.2 chap if (off == 0) 1335 1.164.2.2 chap /* XXXUNCONST */ 1336 1.164.2.2 chap return (struct nfsdircache *)__UNCONST(&dzero); 1337 1.164.2.2 chap 1338 1.164.2.2 chap if (!np->n_dircache) 1339 1.164.2.2 chap return NULL; 1340 1.164.2.2 chap 1341 1.164.2.2 chap /* 1342 1.164.2.2 chap * We use a 32bit cookie as search key, directly reconstruct 1343 1.164.2.2 chap * the hashentry. Else use the hashfunction. 1344 1.164.2.2 chap */ 1345 1.164.2.2 chap if (do32) { 1346 1.164.2.2 chap ent = (u_int32_t)off >> 24; 1347 1.164.2.2 chap if (ent >= NFS_DIRHASHSIZ) 1348 1.164.2.2 chap return NULL; 1349 1.164.2.2 chap ndhp = &np->n_dircache[ent]; 1350 1.164.2.2 chap } else { 1351 1.164.2.2 chap ndhp = NFSDIRHASH(np, off); 1352 1.164.2.2 chap } 1353 1.164.2.2 chap 1354 1.164.2.2 chap if (hashent) 1355 1.164.2.2 chap *hashent = (int)(ndhp - np->n_dircache); 1356 1.164.2.2 chap 1357 1.164.2.2 chap NFSDC_LOCK(np); 1358 1.164.2.2 chap if (do32) { 1359 1.164.2.2 chap LIST_FOREACH(ndp, ndhp, dc_hash) { 1360 1.164.2.2 chap if (ndp->dc_cookie32 == (u_int32_t)off) { 1361 1.164.2.2 chap /* 1362 1.164.2.2 chap * An invalidated entry will become the 1363 1.164.2.2 chap * start of a new block fetched from 1364 1.164.2.2 chap * the server. 1365 1.164.2.2 chap */ 1366 1.164.2.2 chap if (ndp->dc_flags & NFSDC_INVALID) { 1367 1.164.2.2 chap ndp->dc_blkcookie = ndp->dc_cookie; 1368 1.164.2.2 chap ndp->dc_entry = 0; 1369 1.164.2.2 chap ndp->dc_flags &= ~NFSDC_INVALID; 1370 1.164.2.2 chap } 1371 1.164.2.2 chap break; 1372 1.164.2.2 chap } 1373 1.164.2.2 chap } 1374 1.164.2.2 chap } else { 1375 1.164.2.2 chap LIST_FOREACH(ndp, ndhp, dc_hash) { 1376 1.164.2.2 chap if (ndp->dc_cookie == off) 1377 1.164.2.2 chap break; 1378 1.164.2.2 chap } 1379 1.164.2.2 chap } 1380 1.164.2.2 chap if (ndp != NULL) 1381 1.164.2.2 chap ndp->dc_refcnt++; 1382 1.164.2.2 chap NFSDC_UNLOCK(np); 1383 1.164.2.2 chap return ndp; 1384 1.164.2.2 chap } 1385 1.164.2.2 chap 1386 1.164.2.2 chap 1387 1.164.2.2 chap struct nfsdircache * 1388 1.164.2.2 chap nfs_enterdircache(vp, off, blkoff, en, blkno) 1389 1.164.2.2 chap struct vnode *vp; 1390 1.164.2.2 chap off_t off, blkoff; 1391 1.164.2.2 chap int en; 1392 1.164.2.2 chap daddr_t blkno; 1393 1.164.2.2 chap { 1394 1.164.2.2 chap struct nfsnode *np = VTONFS(vp); 1395 1.164.2.2 chap struct nfsdirhashhead *ndhp; 1396 1.164.2.2 chap struct nfsdircache *ndp = NULL; 1397 1.164.2.2 chap struct nfsdircache *newndp = NULL; 1398 1.164.2.2 chap struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1399 1.164.2.2 chap int hashent = 0, gen, overwrite; /* XXX: GCC */ 1400 1.164.2.2 chap 1401 1.164.2.2 chap /* 1402 1.164.2.2 chap * XXX refuse entries for offset 0. amd(8) erroneously sets 1403 1.164.2.2 chap * cookie 0 for the '.' entry, making this necessary. This 1404 1.164.2.2 chap * isn't so bad, as 0 is a special case anyway. 1405 1.164.2.2 chap */ 1406 1.164.2.2 chap if (off == 0) 1407 1.164.2.2 chap /* XXXUNCONST */ 1408 1.164.2.2 chap return (struct nfsdircache *)__UNCONST(&dzero); 1409 1.164.2.2 chap 1410 1.164.2.2 chap if (!np->n_dircache) 1411 1.164.2.2 chap /* 1412 1.164.2.2 chap * XXX would like to do this in nfs_nget but vtype 1413 1.164.2.2 chap * isn't known at that time. 1414 1.164.2.2 chap */ 1415 1.164.2.2 chap nfs_initdircache(vp); 1416 1.164.2.2 chap 1417 1.164.2.2 chap if ((nmp->nm_flag & NFSMNT_XLATECOOKIE) && !np->n_dirgens) 1418 1.164.2.2 chap nfs_initdirxlatecookie(vp); 1419 1.164.2.2 chap 1420 1.164.2.2 chap retry: 1421 1.164.2.2 chap ndp = nfs_searchdircache(vp, off, 0, &hashent); 1422 1.164.2.2 chap 1423 1.164.2.2 chap NFSDC_LOCK(np); 1424 1.164.2.2 chap if (ndp && (ndp->dc_flags & NFSDC_INVALID) == 0) { 1425 1.164.2.2 chap /* 1426 1.164.2.2 chap * Overwriting an old entry. Check if it's the same. 1427 1.164.2.2 chap * If so, just return. If not, remove the old entry. 1428 1.164.2.2 chap */ 1429 1.164.2.2 chap if (ndp->dc_blkcookie == blkoff && ndp->dc_entry == en) 1430 1.164.2.2 chap goto done; 1431 1.164.2.2 chap nfs_unlinkdircache(np, ndp); 1432 1.164.2.2 chap nfs_putdircache_unlocked(np, ndp); 1433 1.164.2.2 chap ndp = NULL; 1434 1.164.2.2 chap } 1435 1.164.2.2 chap 1436 1.164.2.2 chap ndhp = &np->n_dircache[hashent]; 1437 1.164.2.2 chap 1438 1.164.2.2 chap if (!ndp) { 1439 1.164.2.2 chap if (newndp == NULL) { 1440 1.164.2.2 chap NFSDC_UNLOCK(np); 1441 1.164.2.2 chap newndp = malloc(sizeof(*ndp), M_NFSDIROFF, M_WAITOK); 1442 1.164.2.2 chap newndp->dc_refcnt = 1; 1443 1.164.2.2 chap LIST_NEXT(newndp, dc_hash) = (void *)-1; 1444 1.164.2.2 chap goto retry; 1445 1.164.2.2 chap } 1446 1.164.2.2 chap ndp = newndp; 1447 1.164.2.2 chap newndp = NULL; 1448 1.164.2.2 chap overwrite = 0; 1449 1.164.2.2 chap if (nmp->nm_flag & NFSMNT_XLATECOOKIE) { 1450 1.164.2.2 chap /* 1451 1.164.2.2 chap * We're allocating a new entry, so bump the 1452 1.164.2.2 chap * generation number. 1453 1.164.2.2 chap */ 1454 1.164.2.2 chap KASSERT(np->n_dirgens); 1455 1.164.2.2 chap gen = ++np->n_dirgens[hashent]; 1456 1.164.2.2 chap if (gen == 0) { 1457 1.164.2.2 chap np->n_dirgens[hashent]++; 1458 1.164.2.2 chap gen++; 1459 1.164.2.2 chap } 1460 1.164.2.2 chap ndp->dc_cookie32 = (hashent << 24) | (gen & 0xffffff); 1461 1.164.2.2 chap } 1462 1.164.2.2 chap } else 1463 1.164.2.2 chap overwrite = 1; 1464 1.164.2.2 chap 1465 1.164.2.2 chap ndp->dc_cookie = off; 1466 1.164.2.2 chap ndp->dc_blkcookie = blkoff; 1467 1.164.2.2 chap ndp->dc_entry = en; 1468 1.164.2.2 chap ndp->dc_flags = 0; 1469 1.164.2.2 chap 1470 1.164.2.2 chap if (overwrite) 1471 1.164.2.2 chap goto done; 1472 1.164.2.2 chap 1473 1.164.2.2 chap /* 1474 1.164.2.2 chap * If the maximum directory cookie cache size has been reached 1475 1.164.2.2 chap * for this node, take one off the front. The idea is that 1476 1.164.2.2 chap * directories are typically read front-to-back once, so that 1477 1.164.2.2 chap * the oldest entries can be thrown away without much performance 1478 1.164.2.2 chap * loss. 1479 1.164.2.2 chap */ 1480 1.164.2.2 chap if (np->n_dircachesize == NFS_MAXDIRCACHE) { 1481 1.164.2.2 chap nfs_unlinkdircache(np, TAILQ_FIRST(&np->n_dirchain)); 1482 1.164.2.2 chap } else 1483 1.164.2.2 chap np->n_dircachesize++; 1484 1.164.2.2 chap 1485 1.164.2.2 chap KASSERT(ndp->dc_refcnt == 1); 1486 1.164.2.2 chap LIST_INSERT_HEAD(ndhp, ndp, dc_hash); 1487 1.164.2.2 chap TAILQ_INSERT_TAIL(&np->n_dirchain, ndp, dc_chain); 1488 1.164.2.2 chap ndp->dc_refcnt++; 1489 1.164.2.2 chap done: 1490 1.164.2.2 chap KASSERT(ndp->dc_refcnt > 0); 1491 1.164.2.2 chap NFSDC_UNLOCK(np); 1492 1.164.2.2 chap if (newndp) 1493 1.164.2.2 chap nfs_putdircache(np, newndp); 1494 1.164.2.2 chap return ndp; 1495 1.164.2.2 chap } 1496 1.164.2.2 chap 1497 1.164.2.2 chap void 1498 1.164.2.2 chap nfs_invaldircache(vp, flags) 1499 1.164.2.2 chap struct vnode *vp; 1500 1.164.2.2 chap int flags; 1501 1.164.2.2 chap { 1502 1.164.2.2 chap struct nfsnode *np = VTONFS(vp); 1503 1.164.2.2 chap struct nfsdircache *ndp = NULL; 1504 1.164.2.2 chap struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1505 1.164.2.2 chap const boolean_t forcefree = flags & NFS_INVALDIRCACHE_FORCE; 1506 1.164.2.2 chap 1507 1.164.2.2 chap #ifdef DIAGNOSTIC 1508 1.164.2.2 chap if (vp->v_type != VDIR) 1509 1.164.2.2 chap panic("nfs: invaldircache: not dir"); 1510 1.164.2.2 chap #endif 1511 1.164.2.2 chap 1512 1.164.2.2 chap if ((flags & NFS_INVALDIRCACHE_KEEPEOF) == 0) 1513 1.164.2.2 chap np->n_flag &= ~NEOFVALID; 1514 1.164.2.2 chap 1515 1.164.2.2 chap if (!np->n_dircache) 1516 1.164.2.2 chap return; 1517 1.164.2.2 chap 1518 1.164.2.2 chap NFSDC_LOCK(np); 1519 1.164.2.2 chap if (!(nmp->nm_flag & NFSMNT_XLATECOOKIE) || forcefree) { 1520 1.164.2.2 chap while ((ndp = TAILQ_FIRST(&np->n_dirchain)) != NULL) { 1521 1.164.2.2 chap KASSERT(!forcefree || ndp->dc_refcnt == 1); 1522 1.164.2.2 chap nfs_unlinkdircache(np, ndp); 1523 1.164.2.2 chap } 1524 1.164.2.2 chap np->n_dircachesize = 0; 1525 1.164.2.2 chap if (forcefree && np->n_dirgens) { 1526 1.164.2.2 chap FREE(np->n_dirgens, M_NFSDIROFF); 1527 1.164.2.2 chap np->n_dirgens = NULL; 1528 1.164.2.2 chap } 1529 1.164.2.2 chap } else { 1530 1.164.2.2 chap TAILQ_FOREACH(ndp, &np->n_dirchain, dc_chain) 1531 1.164.2.2 chap ndp->dc_flags |= NFSDC_INVALID; 1532 1.164.2.2 chap } 1533 1.164.2.2 chap 1534 1.164.2.2 chap NFSDC_UNLOCK(np); 1535 1.164.2.2 chap } 1536 1.164.2.2 chap 1537 1.164.2.2 chap /* 1538 1.164.2.2 chap * Called once before VFS init to initialize shared and 1539 1.164.2.2 chap * server-specific data structures. 1540 1.164.2.2 chap */ 1541 1.164.2.2 chap static int 1542 1.164.2.2 chap nfs_init0(void) 1543 1.164.2.2 chap { 1544 1.164.2.2 chap nfsrtt.pos = 0; 1545 1.164.2.2 chap rpc_vers = txdr_unsigned(RPC_VER2); 1546 1.164.2.2 chap rpc_call = txdr_unsigned(RPC_CALL); 1547 1.164.2.2 chap rpc_reply = txdr_unsigned(RPC_REPLY); 1548 1.164.2.2 chap rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 1549 1.164.2.2 chap rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 1550 1.164.2.2 chap rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 1551 1.164.2.2 chap rpc_autherr = txdr_unsigned(RPC_AUTHERR); 1552 1.164.2.2 chap rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 1553 1.164.2.2 chap rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 1554 1.164.2.2 chap nfs_prog = txdr_unsigned(NFS_PROG); 1555 1.164.2.2 chap nqnfs_prog = txdr_unsigned(NQNFS_PROG); 1556 1.164.2.2 chap nfs_true = txdr_unsigned(TRUE); 1557 1.164.2.2 chap nfs_false = txdr_unsigned(FALSE); 1558 1.164.2.2 chap nfs_xdrneg1 = txdr_unsigned(-1); 1559 1.164.2.2 chap nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 1560 1.164.2.2 chap if (nfs_ticks < 1) 1561 1.164.2.2 chap nfs_ticks = 1; 1562 1.164.2.2 chap #ifdef NFSSERVER 1563 1.164.2.2 chap nfsrv_init(0); /* Init server data structures */ 1564 1.164.2.2 chap nfsrv_initcache(); /* Init the server request cache */ 1565 1.164.2.2 chap #endif /* NFSSERVER */ 1566 1.164.2.2 chap 1567 1.164.2.2 chap #if defined(NFSSERVER) || (defined(NFS) && !defined(NFS_V2_ONLY)) 1568 1.164.2.2 chap nfsdreq_init(); 1569 1.164.2.2 chap #endif /* defined(NFSSERVER) || (defined(NFS) && !defined(NFS_V2_ONLY)) */ 1570 1.164.2.2 chap 1571 1.164.2.2 chap #if defined(NFSSERVER) || !defined(NFS_V2_ONLY) 1572 1.164.2.2 chap /* 1573 1.164.2.2 chap * Initialize the nqnfs data structures. 1574 1.164.2.2 chap */ 1575 1.164.2.2 chap if (nqnfsstarttime == 0) { 1576 1.164.2.2 chap nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease 1577 1.164.2.2 chap + nqsrv_clockskew + nqsrv_writeslack; 1578 1.164.2.2 chap NQLOADNOVRAM(nqnfsstarttime); 1579 1.164.2.2 chap CIRCLEQ_INIT(&nqtimerhead); 1580 1.164.2.2 chap nqfhhashtbl = hashinit(NQLCHSZ, HASH_LIST, M_NQLEASE, 1581 1.164.2.2 chap M_WAITOK, &nqfhhash); 1582 1.164.2.2 chap } 1583 1.164.2.2 chap #endif 1584 1.164.2.2 chap 1585 1.164.2.2 chap exithook_establish(nfs_exit, NULL); 1586 1.164.2.2 chap 1587 1.164.2.2 chap /* 1588 1.164.2.2 chap * Initialize reply list and start timer 1589 1.164.2.2 chap */ 1590 1.164.2.2 chap TAILQ_INIT(&nfs_reqq); 1591 1.164.2.2 chap nfs_timer(NULL); 1592 1.164.2.2 chap MOWNER_ATTACH(&nfs_mowner); 1593 1.164.2.2 chap 1594 1.164.2.2 chap #ifdef NFS 1595 1.164.2.2 chap /* Initialize the kqueue structures */ 1596 1.164.2.2 chap nfs_kqinit(); 1597 1.164.2.2 chap /* Initialize the iod structures */ 1598 1.164.2.2 chap nfs_iodinit(); 1599 1.164.2.2 chap #endif 1600 1.164.2.2 chap return 0; 1601 1.164.2.2 chap } 1602 1.164.2.2 chap 1603 1.164.2.2 chap void 1604 1.164.2.2 chap nfs_init(void) 1605 1.164.2.2 chap { 1606 1.164.2.2 chap static ONCE_DECL(nfs_init_once); 1607 1.164.2.2 chap 1608 1.164.2.2 chap RUN_ONCE(&nfs_init_once, nfs_init0); 1609 1.164.2.2 chap } 1610 1.164.2.2 chap 1611 1.164.2.2 chap #ifdef NFS 1612 1.164.2.2 chap /* 1613 1.164.2.2 chap * Called once at VFS init to initialize client-specific data structures. 1614 1.164.2.2 chap */ 1615 1.164.2.2 chap void 1616 1.164.2.2 chap nfs_vfs_init() 1617 1.164.2.2 chap { 1618 1.164.2.2 chap /* Initialize NFS server / client shared data. */ 1619 1.164.2.2 chap nfs_init(); 1620 1.164.2.2 chap 1621 1.164.2.2 chap nfs_nhinit(); /* Init the nfsnode table */ 1622 1.164.2.2 chap nfs_commitsize = uvmexp.npages << (PAGE_SHIFT - 4); 1623 1.164.2.2 chap } 1624 1.164.2.2 chap 1625 1.164.2.2 chap void 1626 1.164.2.2 chap nfs_vfs_reinit() 1627 1.164.2.2 chap { 1628 1.164.2.2 chap nfs_nhreinit(); 1629 1.164.2.2 chap } 1630 1.164.2.2 chap 1631 1.164.2.2 chap void 1632 1.164.2.2 chap nfs_vfs_done() 1633 1.164.2.2 chap { 1634 1.164.2.2 chap nfs_nhdone(); 1635 1.164.2.2 chap } 1636 1.164.2.2 chap 1637 1.164.2.2 chap /* 1638 1.164.2.2 chap * Attribute cache routines. 1639 1.164.2.2 chap * nfs_loadattrcache() - loads or updates the cache contents from attributes 1640 1.164.2.2 chap * that are on the mbuf list 1641 1.164.2.2 chap * nfs_getattrcache() - returns valid attributes if found in cache, returns 1642 1.164.2.2 chap * error otherwise 1643 1.164.2.2 chap */ 1644 1.164.2.2 chap 1645 1.164.2.2 chap /* 1646 1.164.2.2 chap * Load the attribute cache (that lives in the nfsnode entry) with 1647 1.164.2.2 chap * the values on the mbuf list and 1648 1.164.2.2 chap * Iff vap not NULL 1649 1.164.2.2 chap * copy the attributes to *vaper 1650 1.164.2.2 chap */ 1651 1.164.2.2 chap int 1652 1.164.2.2 chap nfsm_loadattrcache(vpp, mdp, dposp, vaper, flags) 1653 1.164.2.2 chap struct vnode **vpp; 1654 1.164.2.2 chap struct mbuf **mdp; 1655 1.164.2.2 chap caddr_t *dposp; 1656 1.164.2.2 chap struct vattr *vaper; 1657 1.164.2.2 chap int flags; 1658 1.164.2.2 chap { 1659 1.164.2.2 chap int32_t t1; 1660 1.164.2.2 chap caddr_t cp2; 1661 1.164.2.2 chap int error = 0; 1662 1.164.2.2 chap struct mbuf *md; 1663 1.164.2.2 chap int v3 = NFS_ISV3(*vpp); 1664 1.164.2.2 chap 1665 1.164.2.2 chap md = *mdp; 1666 1.164.2.2 chap t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 1667 1.164.2.2 chap error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2); 1668 1.164.2.2 chap if (error) 1669 1.164.2.2 chap return (error); 1670 1.164.2.2 chap return nfs_loadattrcache(vpp, (struct nfs_fattr *)cp2, vaper, flags); 1671 1.164.2.2 chap } 1672 1.164.2.2 chap 1673 1.164.2.2 chap int 1674 1.164.2.2 chap nfs_loadattrcache(vpp, fp, vaper, flags) 1675 1.164.2.2 chap struct vnode **vpp; 1676 1.164.2.2 chap struct nfs_fattr *fp; 1677 1.164.2.2 chap struct vattr *vaper; 1678 1.164.2.2 chap int flags; 1679 1.164.2.2 chap { 1680 1.164.2.2 chap struct vnode *vp = *vpp; 1681 1.164.2.2 chap struct vattr *vap; 1682 1.164.2.2 chap int v3 = NFS_ISV3(vp); 1683 1.164.2.2 chap enum vtype vtyp; 1684 1.164.2.2 chap u_short vmode; 1685 1.164.2.2 chap struct timespec mtime; 1686 1.164.2.2 chap struct timespec ctime; 1687 1.164.2.2 chap struct vnode *nvp; 1688 1.164.2.2 chap int32_t rdev; 1689 1.164.2.2 chap struct nfsnode *np; 1690 1.164.2.2 chap extern int (**spec_nfsv2nodeop_p) __P((void *)); 1691 1.164.2.2 chap uid_t uid; 1692 1.164.2.2 chap gid_t gid; 1693 1.164.2.2 chap 1694 1.164.2.2 chap if (v3) { 1695 1.164.2.2 chap vtyp = nfsv3tov_type(fp->fa_type); 1696 1.164.2.2 chap vmode = fxdr_unsigned(u_short, fp->fa_mode); 1697 1.164.2.2 chap rdev = makedev(fxdr_unsigned(u_int32_t, fp->fa3_rdev.specdata1), 1698 1.164.2.2 chap fxdr_unsigned(u_int32_t, fp->fa3_rdev.specdata2)); 1699 1.164.2.2 chap fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 1700 1.164.2.2 chap fxdr_nfsv3time(&fp->fa3_ctime, &ctime); 1701 1.164.2.2 chap } else { 1702 1.164.2.2 chap vtyp = nfsv2tov_type(fp->fa_type); 1703 1.164.2.2 chap vmode = fxdr_unsigned(u_short, fp->fa_mode); 1704 1.164.2.2 chap if (vtyp == VNON || vtyp == VREG) 1705 1.164.2.2 chap vtyp = IFTOVT(vmode); 1706 1.164.2.2 chap rdev = fxdr_unsigned(int32_t, fp->fa2_rdev); 1707 1.164.2.2 chap fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 1708 1.164.2.2 chap ctime.tv_sec = fxdr_unsigned(u_int32_t, 1709 1.164.2.2 chap fp->fa2_ctime.nfsv2_sec); 1710 1.164.2.2 chap ctime.tv_nsec = 0; 1711 1.164.2.2 chap 1712 1.164.2.2 chap /* 1713 1.164.2.2 chap * Really ugly NFSv2 kludge. 1714 1.164.2.2 chap */ 1715 1.164.2.2 chap if (vtyp == VCHR && rdev == 0xffffffff) 1716 1.164.2.2 chap vtyp = VFIFO; 1717 1.164.2.2 chap } 1718 1.164.2.2 chap 1719 1.164.2.2 chap vmode &= ALLPERMS; 1720 1.164.2.2 chap 1721 1.164.2.2 chap /* 1722 1.164.2.2 chap * If v_type == VNON it is a new node, so fill in the v_type, 1723 1.164.2.2 chap * n_mtime fields. Check to see if it represents a special 1724 1.164.2.2 chap * device, and if so, check for a possible alias. Once the 1725 1.164.2.2 chap * correct vnode has been obtained, fill in the rest of the 1726 1.164.2.2 chap * information. 1727 1.164.2.2 chap */ 1728 1.164.2.2 chap np = VTONFS(vp); 1729 1.164.2.2 chap if (vp->v_type == VNON) { 1730 1.164.2.2 chap vp->v_type = vtyp; 1731 1.164.2.2 chap if (vp->v_type == VFIFO) { 1732 1.164.2.2 chap extern int (**fifo_nfsv2nodeop_p) __P((void *)); 1733 1.164.2.2 chap vp->v_op = fifo_nfsv2nodeop_p; 1734 1.164.2.2 chap } else if (vp->v_type == VREG) { 1735 1.164.2.2 chap lockinit(&np->n_commitlock, PINOD, "nfsclock", 0, 0); 1736 1.164.2.2 chap } else if (vp->v_type == VCHR || vp->v_type == VBLK) { 1737 1.164.2.2 chap vp->v_op = spec_nfsv2nodeop_p; 1738 1.164.2.2 chap nvp = checkalias(vp, (dev_t)rdev, vp->v_mount); 1739 1.164.2.2 chap if (nvp) { 1740 1.164.2.2 chap /* 1741 1.164.2.2 chap * Discard unneeded vnode, but save its nfsnode. 1742 1.164.2.2 chap * Since the nfsnode does not have a lock, its 1743 1.164.2.2 chap * vnode lock has to be carried over. 1744 1.164.2.2 chap */ 1745 1.164.2.2 chap /* 1746 1.164.2.2 chap * XXX is the old node sure to be locked here? 1747 1.164.2.2 chap */ 1748 1.164.2.2 chap KASSERT(lockstatus(&vp->v_lock) == 1749 1.164.2.2 chap LK_EXCLUSIVE); 1750 1.164.2.2 chap nvp->v_data = vp->v_data; 1751 1.164.2.2 chap vp->v_data = NULL; 1752 1.164.2.2 chap VOP_UNLOCK(vp, 0); 1753 1.164.2.2 chap vp->v_op = spec_vnodeop_p; 1754 1.164.2.2 chap vrele(vp); 1755 1.164.2.2 chap vgone(vp); 1756 1.164.2.2 chap lockmgr(&nvp->v_lock, LK_EXCLUSIVE, 1757 1.164.2.2 chap &nvp->v_interlock); 1758 1.164.2.2 chap /* 1759 1.164.2.2 chap * Reinitialize aliased node. 1760 1.164.2.2 chap */ 1761 1.164.2.2 chap np->n_vnode = nvp; 1762 1.164.2.2 chap *vpp = vp = nvp; 1763 1.164.2.2 chap } 1764 1.164.2.2 chap } 1765 1.164.2.2 chap np->n_mtime = mtime; 1766 1.164.2.2 chap } 1767 1.164.2.2 chap uid = fxdr_unsigned(uid_t, fp->fa_uid); 1768 1.164.2.2 chap gid = fxdr_unsigned(gid_t, fp->fa_gid); 1769 1.164.2.2 chap vap = np->n_vattr; 1770 1.164.2.2 chap 1771 1.164.2.2 chap /* 1772 1.164.2.2 chap * Invalidate access cache if uid, gid, mode or ctime changed. 1773 1.164.2.2 chap */ 1774 1.164.2.2 chap if (np->n_accstamp != -1 && 1775 1.164.2.2 chap (gid != vap->va_gid || uid != vap->va_uid || vmode != vap->va_mode 1776 1.164.2.2 chap || timespeccmp(&ctime, &vap->va_ctime, !=))) 1777 1.164.2.2 chap np->n_accstamp = -1; 1778 1.164.2.2 chap 1779 1.164.2.2 chap vap->va_type = vtyp; 1780 1.164.2.2 chap vap->va_mode = vmode; 1781 1.164.2.2 chap vap->va_rdev = (dev_t)rdev; 1782 1.164.2.2 chap vap->va_mtime = mtime; 1783 1.164.2.2 chap vap->va_ctime = ctime; 1784 1.164.2.2 chap vap->va_fsid = vp->v_mount->mnt_stat.f_fsidx.__fsid_val[0]; 1785 1.164.2.2 chap switch (vtyp) { 1786 1.164.2.2 chap case VDIR: 1787 1.164.2.2 chap vap->va_blocksize = NFS_DIRFRAGSIZ; 1788 1.164.2.2 chap break; 1789 1.164.2.2 chap case VBLK: 1790 1.164.2.2 chap vap->va_blocksize = BLKDEV_IOSIZE; 1791 1.164.2.2 chap break; 1792 1.164.2.2 chap case VCHR: 1793 1.164.2.2 chap vap->va_blocksize = MAXBSIZE; 1794 1.164.2.2 chap break; 1795 1.164.2.2 chap default: 1796 1.164.2.2 chap vap->va_blocksize = v3 ? vp->v_mount->mnt_stat.f_iosize : 1797 1.164.2.2 chap fxdr_unsigned(int32_t, fp->fa2_blocksize); 1798 1.164.2.2 chap break; 1799 1.164.2.2 chap } 1800 1.164.2.2 chap if (v3) { 1801 1.164.2.2 chap vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1802 1.164.2.2 chap vap->va_uid = uid; 1803 1.164.2.2 chap vap->va_gid = gid; 1804 1.164.2.2 chap vap->va_size = fxdr_hyper(&fp->fa3_size); 1805 1.164.2.2 chap vap->va_bytes = fxdr_hyper(&fp->fa3_used); 1806 1.164.2.2 chap vap->va_fileid = fxdr_hyper(&fp->fa3_fileid); 1807 1.164.2.2 chap fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 1808 1.164.2.2 chap vap->va_flags = 0; 1809 1.164.2.2 chap vap->va_filerev = 0; 1810 1.164.2.2 chap } else { 1811 1.164.2.2 chap vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1812 1.164.2.2 chap vap->va_uid = uid; 1813 1.164.2.2 chap vap->va_gid = gid; 1814 1.164.2.2 chap vap->va_size = fxdr_unsigned(u_int32_t, fp->fa2_size); 1815 1.164.2.2 chap vap->va_bytes = fxdr_unsigned(int32_t, fp->fa2_blocks) 1816 1.164.2.2 chap * NFS_FABLKSIZE; 1817 1.164.2.2 chap vap->va_fileid = fxdr_unsigned(int32_t, fp->fa2_fileid); 1818 1.164.2.2 chap fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 1819 1.164.2.2 chap vap->va_flags = 0; 1820 1.164.2.2 chap vap->va_gen = fxdr_unsigned(u_int32_t,fp->fa2_ctime.nfsv2_usec); 1821 1.164.2.2 chap vap->va_filerev = 0; 1822 1.164.2.2 chap } 1823 1.164.2.2 chap if (vap->va_size != np->n_size) { 1824 1.164.2.2 chap if ((np->n_flag & NMODIFIED) && vap->va_size < np->n_size) { 1825 1.164.2.2 chap vap->va_size = np->n_size; 1826 1.164.2.2 chap } else { 1827 1.164.2.2 chap np->n_size = vap->va_size; 1828 1.164.2.2 chap if (vap->va_type == VREG) { 1829 1.164.2.2 chap /* 1830 1.164.2.2 chap * we can't free pages if NAC_NOTRUNC because 1831 1.164.2.2 chap * the pages can be owned by ourselves. 1832 1.164.2.2 chap */ 1833 1.164.2.2 chap if (flags & NAC_NOTRUNC) { 1834 1.164.2.2 chap np->n_flag |= NTRUNCDELAYED; 1835 1.164.2.2 chap } else { 1836 1.164.2.2 chap simple_lock(&vp->v_interlock); 1837 1.164.2.2 chap (void)VOP_PUTPAGES(vp, 0, 1838 1.164.2.2 chap 0, PGO_SYNCIO | PGO_CLEANIT | 1839 1.164.2.2 chap PGO_FREE | PGO_ALLPAGES); 1840 1.164.2.2 chap uvm_vnp_setsize(vp, np->n_size); 1841 1.164.2.2 chap } 1842 1.164.2.2 chap } 1843 1.164.2.2 chap } 1844 1.164.2.2 chap } 1845 1.164.2.2 chap np->n_attrstamp = time_second; 1846 1.164.2.2 chap if (vaper != NULL) { 1847 1.164.2.2 chap memcpy((caddr_t)vaper, (caddr_t)vap, sizeof(*vap)); 1848 1.164.2.2 chap if (np->n_flag & NCHG) { 1849 1.164.2.2 chap if (np->n_flag & NACC) 1850 1.164.2.2 chap vaper->va_atime = np->n_atim; 1851 1.164.2.2 chap if (np->n_flag & NUPD) 1852 1.164.2.2 chap vaper->va_mtime = np->n_mtim; 1853 1.164.2.2 chap } 1854 1.164.2.2 chap } 1855 1.164.2.2 chap return (0); 1856 1.164.2.2 chap } 1857 1.164.2.2 chap 1858 1.164.2.2 chap /* 1859 1.164.2.2 chap * Check the time stamp 1860 1.164.2.2 chap * If the cache is valid, copy contents to *vap and return 0 1861 1.164.2.2 chap * otherwise return an error 1862 1.164.2.2 chap */ 1863 1.164.2.2 chap int 1864 1.164.2.2 chap nfs_getattrcache(vp, vaper) 1865 1.164.2.2 chap struct vnode *vp; 1866 1.164.2.2 chap struct vattr *vaper; 1867 1.164.2.2 chap { 1868 1.164.2.2 chap struct nfsnode *np = VTONFS(vp); 1869 1.164.2.2 chap struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1870 1.164.2.2 chap struct vattr *vap; 1871 1.164.2.2 chap 1872 1.164.2.2 chap if (np->n_attrstamp == 0 || 1873 1.164.2.2 chap (time_second - np->n_attrstamp) >= NFS_ATTRTIMEO(nmp, np)) { 1874 1.164.2.2 chap nfsstats.attrcache_misses++; 1875 1.164.2.2 chap return (ENOENT); 1876 1.164.2.2 chap } 1877 1.164.2.2 chap nfsstats.attrcache_hits++; 1878 1.164.2.2 chap vap = np->n_vattr; 1879 1.164.2.2 chap if (vap->va_size != np->n_size) { 1880 1.164.2.2 chap if (vap->va_type == VREG) { 1881 1.164.2.2 chap if (np->n_flag & NMODIFIED) { 1882 1.164.2.2 chap if (vap->va_size < np->n_size) 1883 1.164.2.2 chap vap->va_size = np->n_size; 1884 1.164.2.2 chap else 1885 1.164.2.2 chap np->n_size = vap->va_size; 1886 1.164.2.2 chap } else 1887 1.164.2.2 chap np->n_size = vap->va_size; 1888 1.164.2.2 chap uvm_vnp_setsize(vp, np->n_size); 1889 1.164.2.2 chap } else 1890 1.164.2.2 chap np->n_size = vap->va_size; 1891 1.164.2.2 chap } 1892 1.164.2.2 chap memcpy((caddr_t)vaper, (caddr_t)vap, sizeof(struct vattr)); 1893 1.164.2.2 chap if (np->n_flag & NCHG) { 1894 1.164.2.2 chap if (np->n_flag & NACC) 1895 1.164.2.2 chap vaper->va_atime = np->n_atim; 1896 1.164.2.2 chap if (np->n_flag & NUPD) 1897 1.164.2.2 chap vaper->va_mtime = np->n_mtim; 1898 1.164.2.2 chap } 1899 1.164.2.2 chap return (0); 1900 1.164.2.2 chap } 1901 1.164.2.2 chap 1902 1.164.2.2 chap void 1903 1.164.2.2 chap nfs_delayedtruncate(vp) 1904 1.164.2.2 chap struct vnode *vp; 1905 1.164.2.2 chap { 1906 1.164.2.2 chap struct nfsnode *np = VTONFS(vp); 1907 1.164.2.2 chap 1908 1.164.2.2 chap if (np->n_flag & NTRUNCDELAYED) { 1909 1.164.2.2 chap np->n_flag &= ~NTRUNCDELAYED; 1910 1.164.2.2 chap simple_lock(&vp->v_interlock); 1911 1.164.2.2 chap (void)VOP_PUTPAGES(vp, 0, 1912 1.164.2.2 chap 0, PGO_SYNCIO | PGO_CLEANIT | PGO_FREE | PGO_ALLPAGES); 1913 1.164.2.2 chap uvm_vnp_setsize(vp, np->n_size); 1914 1.164.2.2 chap } 1915 1.164.2.2 chap } 1916 1.164.2.2 chap 1917 1.164.2.2 chap #define NFS_WCCKLUDGE_TIMEOUT (24 * 60 * 60) /* 1 day */ 1918 1.164.2.2 chap #define NFS_WCCKLUDGE(nmp, now) \ 1919 1.164.2.2 chap (((nmp)->nm_iflag & NFSMNT_WCCKLUDGE) && \ 1920 1.164.2.2 chap ((now) - (nmp)->nm_wcckludgetime - NFS_WCCKLUDGE_TIMEOUT) < 0) 1921 1.164.2.2 chap 1922 1.164.2.2 chap /* 1923 1.164.2.2 chap * nfs_check_wccdata: check inaccurate wcc_data 1924 1.164.2.2 chap * 1925 1.164.2.2 chap * => return non-zero if we shouldn't trust the wcc_data. 1926 1.164.2.2 chap * => NFS_WCCKLUDGE_TIMEOUT is for the case that the server is "fixed". 1927 1.164.2.2 chap */ 1928 1.164.2.2 chap 1929 1.164.2.2 chap int 1930 1.164.2.2 chap nfs_check_wccdata(struct nfsnode *np, const struct timespec *ctime, 1931 1.164.2.2 chap struct timespec *mtime, boolean_t docheck) 1932 1.164.2.2 chap { 1933 1.164.2.2 chap int error = 0; 1934 1.164.2.2 chap 1935 1.164.2.2 chap #if !defined(NFS_V2_ONLY) 1936 1.164.2.2 chap 1937 1.164.2.2 chap if (docheck) { 1938 1.164.2.2 chap struct vnode *vp = NFSTOV(np); 1939 1.164.2.2 chap struct nfsmount *nmp; 1940 1.164.2.2 chap long now = time_second; 1941 1.164.2.2 chap #if defined(DEBUG) 1942 1.164.2.2 chap const char *reason = NULL; /* XXX: gcc */ 1943 1.164.2.2 chap #endif 1944 1.164.2.2 chap 1945 1.164.2.2 chap if (timespeccmp(&np->n_vattr->va_mtime, mtime, <=)) { 1946 1.164.2.2 chap #if defined(DEBUG) 1947 1.164.2.2 chap reason = "mtime"; 1948 1.164.2.2 chap #endif 1949 1.164.2.2 chap error = EINVAL; 1950 1.164.2.2 chap } 1951 1.164.2.2 chap 1952 1.164.2.2 chap if (vp->v_type == VDIR && 1953 1.164.2.2 chap timespeccmp(&np->n_vattr->va_ctime, ctime, <=)) { 1954 1.164.2.2 chap #if defined(DEBUG) 1955 1.164.2.2 chap reason = "ctime"; 1956 1.164.2.2 chap #endif 1957 1.164.2.2 chap error = EINVAL; 1958 1.164.2.2 chap } 1959 1.164.2.2 chap 1960 1.164.2.2 chap nmp = VFSTONFS(vp->v_mount); 1961 1.164.2.2 chap if (error) { 1962 1.164.2.2 chap 1963 1.164.2.2 chap /* 1964 1.164.2.2 chap * despite of the fact that we've updated the file, 1965 1.164.2.2 chap * timestamps of the file were not updated as we 1966 1.164.2.2 chap * expected. 1967 1.164.2.2 chap * it means that the server has incompatible 1968 1.164.2.2 chap * semantics of timestamps or (more likely) 1969 1.164.2.2 chap * the server time is not precise enough to 1970 1.164.2.2 chap * track each modifications. 1971 1.164.2.2 chap * in that case, we disable wcc processing. 1972 1.164.2.2 chap * 1973 1.164.2.2 chap * yes, strictly speaking, we should disable all 1974 1.164.2.2 chap * caching. it's a compromise. 1975 1.164.2.2 chap */ 1976 1.164.2.2 chap 1977 1.164.2.2 chap simple_lock(&nmp->nm_slock); 1978 1.164.2.2 chap #if defined(DEBUG) 1979 1.164.2.2 chap if (!NFS_WCCKLUDGE(nmp, now)) { 1980 1.164.2.2 chap printf("%s: inaccurate wcc data (%s) detected," 1981 1.164.2.2 chap " disabling wcc\n", 1982 1.164.2.2 chap vp->v_mount->mnt_stat.f_mntfromname, 1983 1.164.2.2 chap reason); 1984 1.164.2.2 chap } 1985 1.164.2.2 chap #endif 1986 1.164.2.2 chap nmp->nm_iflag |= NFSMNT_WCCKLUDGE; 1987 1.164.2.2 chap nmp->nm_wcckludgetime = now; 1988 1.164.2.2 chap simple_unlock(&nmp->nm_slock); 1989 1.164.2.2 chap } else if (NFS_WCCKLUDGE(nmp, now)) { 1990 1.164.2.2 chap error = EPERM; /* XXX */ 1991 1.164.2.2 chap } else if (nmp->nm_iflag & NFSMNT_WCCKLUDGE) { 1992 1.164.2.2 chap simple_lock(&nmp->nm_slock); 1993 1.164.2.2 chap if (nmp->nm_iflag & NFSMNT_WCCKLUDGE) { 1994 1.164.2.2 chap #if defined(DEBUG) 1995 1.164.2.2 chap printf("%s: re-enabling wcc\n", 1996 1.164.2.2 chap vp->v_mount->mnt_stat.f_mntfromname); 1997 1.164.2.2 chap #endif 1998 1.164.2.2 chap nmp->nm_iflag &= ~NFSMNT_WCCKLUDGE; 1999 1.164.2.2 chap } 2000 1.164.2.2 chap simple_unlock(&nmp->nm_slock); 2001 1.164.2.2 chap } 2002 1.164.2.2 chap } 2003 1.164.2.2 chap 2004 1.164.2.2 chap #endif /* !defined(NFS_V2_ONLY) */ 2005 1.164.2.2 chap 2006 1.164.2.2 chap return error; 2007 1.164.2.2 chap } 2008 1.164.2.2 chap 2009 1.164.2.2 chap /* 2010 1.164.2.2 chap * Heuristic to see if the server XDR encodes directory cookies or not. 2011 1.164.2.2 chap * it is not supposed to, but a lot of servers may do this. Also, since 2012 1.164.2.2 chap * most/all servers will implement V2 as well, it is expected that they 2013 1.164.2.2 chap * may return just 32 bits worth of cookie information, so we need to 2014 1.164.2.2 chap * find out in which 32 bits this information is available. We do this 2015 1.164.2.2 chap * to avoid trouble with emulated binaries that can't handle 64 bit 2016 1.164.2.2 chap * directory offsets. 2017 1.164.2.2 chap */ 2018 1.164.2.2 chap 2019 1.164.2.2 chap void 2020 1.164.2.2 chap nfs_cookieheuristic(vp, flagp, l, cred) 2021 1.164.2.2 chap struct vnode *vp; 2022 1.164.2.2 chap int *flagp; 2023 1.164.2.2 chap struct lwp *l; 2024 1.164.2.2 chap kauth_cred_t cred; 2025 1.164.2.2 chap { 2026 1.164.2.2 chap struct uio auio; 2027 1.164.2.2 chap struct iovec aiov; 2028 1.164.2.2 chap caddr_t tbuf, cp; 2029 1.164.2.2 chap struct dirent *dp; 2030 1.164.2.2 chap off_t *cookies = NULL, *cop; 2031 1.164.2.2 chap int error, eof, nc, len; 2032 1.164.2.2 chap 2033 1.164.2.2 chap MALLOC(tbuf, caddr_t, NFS_DIRFRAGSIZ, M_TEMP, M_WAITOK); 2034 1.164.2.2 chap 2035 1.164.2.2 chap aiov.iov_base = tbuf; 2036 1.164.2.2 chap aiov.iov_len = NFS_DIRFRAGSIZ; 2037 1.164.2.2 chap auio.uio_iov = &aiov; 2038 1.164.2.2 chap auio.uio_iovcnt = 1; 2039 1.164.2.2 chap auio.uio_rw = UIO_READ; 2040 1.164.2.2 chap auio.uio_resid = NFS_DIRFRAGSIZ; 2041 1.164.2.2 chap auio.uio_offset = 0; 2042 1.164.2.2 chap UIO_SETUP_SYSSPACE(&auio); 2043 1.164.2.2 chap 2044 1.164.2.2 chap error = VOP_READDIR(vp, &auio, cred, &eof, &cookies, &nc); 2045 1.164.2.2 chap 2046 1.164.2.2 chap len = NFS_DIRFRAGSIZ - auio.uio_resid; 2047 1.164.2.2 chap if (error || len == 0) { 2048 1.164.2.2 chap FREE(tbuf, M_TEMP); 2049 1.164.2.2 chap if (cookies) 2050 1.164.2.2 chap free(cookies, M_TEMP); 2051 1.164.2.2 chap return; 2052 1.164.2.2 chap } 2053 1.164.2.2 chap 2054 1.164.2.2 chap /* 2055 1.164.2.2 chap * Find the first valid entry and look at its offset cookie. 2056 1.164.2.2 chap */ 2057 1.164.2.2 chap 2058 1.164.2.2 chap cp = tbuf; 2059 1.164.2.2 chap for (cop = cookies; len > 0; len -= dp->d_reclen) { 2060 1.164.2.2 chap dp = (struct dirent *)cp; 2061 1.164.2.2 chap if (dp->d_fileno != 0 && len >= dp->d_reclen) { 2062 1.164.2.2 chap if ((*cop >> 32) != 0 && (*cop & 0xffffffffLL) == 0) { 2063 1.164.2.2 chap *flagp |= NFSMNT_SWAPCOOKIE; 2064 1.164.2.2 chap nfs_invaldircache(vp, 0); 2065 1.164.2.2 chap nfs_vinvalbuf(vp, 0, cred, l, 1); 2066 1.164.2.2 chap } 2067 1.164.2.2 chap break; 2068 1.164.2.2 chap } 2069 1.164.2.2 chap cop++; 2070 1.164.2.2 chap cp += dp->d_reclen; 2071 1.164.2.2 chap } 2072 1.164.2.2 chap 2073 1.164.2.2 chap FREE(tbuf, M_TEMP); 2074 1.164.2.2 chap free(cookies, M_TEMP); 2075 1.164.2.2 chap } 2076 1.164.2.2 chap #endif /* NFS */ 2077 1.164.2.2 chap 2078 1.164.2.2 chap #ifdef NFSSERVER 2079 1.164.2.2 chap /* 2080 1.164.2.2 chap * Set up nameidata for a lookup() call and do it. 2081 1.164.2.2 chap * 2082 1.164.2.2 chap * If pubflag is set, this call is done for a lookup operation on the 2083 1.164.2.2 chap * public filehandle. In that case we allow crossing mountpoints and 2084 1.164.2.2 chap * absolute pathnames. However, the caller is expected to check that 2085 1.164.2.2 chap * the lookup result is within the public fs, and deny access if 2086 1.164.2.2 chap * it is not. 2087 1.164.2.2 chap */ 2088 1.164.2.2 chap int 2089 1.164.2.2 chap nfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, l, kerbflag, pubflag) 2090 1.164.2.2 chap struct nameidata *ndp; 2091 1.164.2.2 chap fhandle_t *fhp; 2092 1.164.2.2 chap uint32_t len; 2093 1.164.2.2 chap struct nfssvc_sock *slp; 2094 1.164.2.2 chap struct mbuf *nam; 2095 1.164.2.2 chap struct mbuf **mdp; 2096 1.164.2.2 chap caddr_t *dposp; 2097 1.164.2.2 chap struct vnode **retdirp; 2098 1.164.2.2 chap struct lwp *l; 2099 1.164.2.2 chap int kerbflag, pubflag; 2100 1.164.2.2 chap { 2101 1.164.2.2 chap int i, rem; 2102 1.164.2.2 chap struct mbuf *md; 2103 1.164.2.2 chap char *fromcp, *tocp, *cp; 2104 1.164.2.2 chap struct iovec aiov; 2105 1.164.2.2 chap struct uio auio; 2106 1.164.2.2 chap struct vnode *dp; 2107 1.164.2.2 chap int error, rdonly, linklen; 2108 1.164.2.2 chap struct componentname *cnp = &ndp->ni_cnd; 2109 1.164.2.2 chap 2110 1.164.2.2 chap *retdirp = (struct vnode *)0; 2111 1.164.2.2 chap 2112 1.164.2.2 chap if ((len + 1) > MAXPATHLEN) 2113 1.164.2.2 chap return (ENAMETOOLONG); 2114 1.164.2.2 chap if (len == 0) 2115 1.164.2.2 chap return (EACCES); 2116 1.164.2.2 chap cnp->cn_pnbuf = PNBUF_GET(); 2117 1.164.2.2 chap 2118 1.164.2.2 chap /* 2119 1.164.2.2 chap * Copy the name from the mbuf list to ndp->ni_pnbuf 2120 1.164.2.2 chap * and set the various ndp fields appropriately. 2121 1.164.2.2 chap */ 2122 1.164.2.2 chap fromcp = *dposp; 2123 1.164.2.2 chap tocp = cnp->cn_pnbuf; 2124 1.164.2.2 chap md = *mdp; 2125 1.164.2.2 chap rem = mtod(md, caddr_t) + md->m_len - fromcp; 2126 1.164.2.2 chap for (i = 0; i < len; i++) { 2127 1.164.2.2 chap while (rem == 0) { 2128 1.164.2.2 chap md = md->m_next; 2129 1.164.2.2 chap if (md == NULL) { 2130 1.164.2.2 chap error = EBADRPC; 2131 1.164.2.2 chap goto out; 2132 1.164.2.2 chap } 2133 1.164.2.2 chap fromcp = mtod(md, caddr_t); 2134 1.164.2.2 chap rem = md->m_len; 2135 1.164.2.2 chap } 2136 1.164.2.2 chap if (*fromcp == '\0' || (!pubflag && *fromcp == '/')) { 2137 1.164.2.2 chap error = EACCES; 2138 1.164.2.2 chap goto out; 2139 1.164.2.2 chap } 2140 1.164.2.2 chap *tocp++ = *fromcp++; 2141 1.164.2.2 chap rem--; 2142 1.164.2.2 chap } 2143 1.164.2.2 chap *tocp = '\0'; 2144 1.164.2.2 chap *mdp = md; 2145 1.164.2.2 chap *dposp = fromcp; 2146 1.164.2.2 chap len = nfsm_rndup(len)-len; 2147 1.164.2.2 chap if (len > 0) { 2148 1.164.2.2 chap if (rem >= len) 2149 1.164.2.2 chap *dposp += len; 2150 1.164.2.2 chap else if ((error = nfs_adv(mdp, dposp, len, rem)) != 0) 2151 1.164.2.2 chap goto out; 2152 1.164.2.2 chap } 2153 1.164.2.2 chap 2154 1.164.2.2 chap /* 2155 1.164.2.2 chap * Extract and set starting directory. 2156 1.164.2.2 chap */ 2157 1.164.2.2 chap error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp, 2158 1.164.2.2 chap nam, &rdonly, kerbflag, pubflag); 2159 1.164.2.2 chap if (error) 2160 1.164.2.2 chap goto out; 2161 1.164.2.2 chap if (dp->v_type != VDIR) { 2162 1.164.2.2 chap vrele(dp); 2163 1.164.2.2 chap error = ENOTDIR; 2164 1.164.2.2 chap goto out; 2165 1.164.2.2 chap } 2166 1.164.2.2 chap 2167 1.164.2.2 chap if (rdonly) 2168 1.164.2.2 chap cnp->cn_flags |= RDONLY; 2169 1.164.2.2 chap 2170 1.164.2.2 chap *retdirp = dp; 2171 1.164.2.2 chap 2172 1.164.2.2 chap if (pubflag) { 2173 1.164.2.2 chap /* 2174 1.164.2.2 chap * Oh joy. For WebNFS, handle those pesky '%' escapes, 2175 1.164.2.2 chap * and the 'native path' indicator. 2176 1.164.2.2 chap */ 2177 1.164.2.2 chap cp = PNBUF_GET(); 2178 1.164.2.2 chap fromcp = cnp->cn_pnbuf; 2179 1.164.2.2 chap tocp = cp; 2180 1.164.2.2 chap if ((unsigned char)*fromcp >= WEBNFS_SPECCHAR_START) { 2181 1.164.2.2 chap switch ((unsigned char)*fromcp) { 2182 1.164.2.2 chap case WEBNFS_NATIVE_CHAR: 2183 1.164.2.2 chap /* 2184 1.164.2.2 chap * 'Native' path for us is the same 2185 1.164.2.2 chap * as a path according to the NFS spec, 2186 1.164.2.2 chap * just skip the escape char. 2187 1.164.2.2 chap */ 2188 1.164.2.2 chap fromcp++; 2189 1.164.2.2 chap break; 2190 1.164.2.2 chap /* 2191 1.164.2.2 chap * More may be added in the future, range 0x80-0xff 2192 1.164.2.2 chap */ 2193 1.164.2.2 chap default: 2194 1.164.2.2 chap error = EIO; 2195 1.164.2.2 chap PNBUF_PUT(cp); 2196 1.164.2.2 chap goto out; 2197 1.164.2.2 chap } 2198 1.164.2.2 chap } 2199 1.164.2.2 chap /* 2200 1.164.2.2 chap * Translate the '%' escapes, URL-style. 2201 1.164.2.2 chap */ 2202 1.164.2.2 chap while (*fromcp != '\0') { 2203 1.164.2.2 chap if (*fromcp == WEBNFS_ESC_CHAR) { 2204 1.164.2.2 chap if (fromcp[1] != '\0' && fromcp[2] != '\0') { 2205 1.164.2.2 chap fromcp++; 2206 1.164.2.2 chap *tocp++ = HEXSTRTOI(fromcp); 2207 1.164.2.2 chap fromcp += 2; 2208 1.164.2.2 chap continue; 2209 1.164.2.2 chap } else { 2210 1.164.2.2 chap error = ENOENT; 2211 1.164.2.2 chap PNBUF_PUT(cp); 2212 1.164.2.2 chap goto out; 2213 1.164.2.2 chap } 2214 1.164.2.2 chap } else 2215 1.164.2.2 chap *tocp++ = *fromcp++; 2216 1.164.2.2 chap } 2217 1.164.2.2 chap *tocp = '\0'; 2218 1.164.2.2 chap PNBUF_PUT(cnp->cn_pnbuf); 2219 1.164.2.2 chap cnp->cn_pnbuf = cp; 2220 1.164.2.2 chap } 2221 1.164.2.2 chap 2222 1.164.2.2 chap ndp->ni_pathlen = (tocp - cnp->cn_pnbuf) + 1; 2223 1.164.2.2 chap ndp->ni_segflg = UIO_SYSSPACE; 2224 1.164.2.2 chap ndp->ni_rootdir = rootvnode; 2225 1.164.2.2 chap 2226 1.164.2.2 chap if (pubflag) { 2227 1.164.2.2 chap ndp->ni_loopcnt = 0; 2228 1.164.2.2 chap if (cnp->cn_pnbuf[0] == '/') 2229 1.164.2.2 chap dp = rootvnode; 2230 1.164.2.2 chap } else { 2231 1.164.2.2 chap cnp->cn_flags |= NOCROSSMOUNT; 2232 1.164.2.2 chap } 2233 1.164.2.2 chap 2234 1.164.2.2 chap cnp->cn_lwp = l; 2235 1.164.2.2 chap VREF(dp); 2236 1.164.2.2 chap 2237 1.164.2.2 chap for (;;) { 2238 1.164.2.2 chap cnp->cn_nameptr = cnp->cn_pnbuf; 2239 1.164.2.2 chap ndp->ni_startdir = dp; 2240 1.164.2.2 chap /* 2241 1.164.2.2 chap * And call lookup() to do the real work 2242 1.164.2.2 chap */ 2243 1.164.2.2 chap error = lookup(ndp); 2244 1.164.2.2 chap if (error) { 2245 1.164.2.2 chap PNBUF_PUT(cnp->cn_pnbuf); 2246 1.164.2.2 chap return (error); 2247 1.164.2.2 chap } 2248 1.164.2.2 chap /* 2249 1.164.2.2 chap * Check for encountering a symbolic link 2250 1.164.2.2 chap */ 2251 1.164.2.2 chap if ((cnp->cn_flags & ISSYMLINK) == 0) { 2252 1.164.2.2 chap if (cnp->cn_flags & (SAVENAME | SAVESTART)) 2253 1.164.2.2 chap cnp->cn_flags |= HASBUF; 2254 1.164.2.2 chap else 2255 1.164.2.2 chap PNBUF_PUT(cnp->cn_pnbuf); 2256 1.164.2.2 chap return (0); 2257 1.164.2.2 chap } else { 2258 1.164.2.2 chap if ((cnp->cn_flags & LOCKPARENT) && (cnp->cn_flags & ISLASTCN)) 2259 1.164.2.2 chap VOP_UNLOCK(ndp->ni_dvp, 0); 2260 1.164.2.2 chap if (!pubflag) { 2261 1.164.2.2 chap error = EINVAL; 2262 1.164.2.2 chap break; 2263 1.164.2.2 chap } 2264 1.164.2.2 chap 2265 1.164.2.2 chap if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 2266 1.164.2.2 chap error = ELOOP; 2267 1.164.2.2 chap break; 2268 1.164.2.2 chap } 2269 1.164.2.2 chap if (ndp->ni_vp->v_mount->mnt_flag & MNT_SYMPERM) { 2270 1.164.2.2 chap error = VOP_ACCESS(ndp->ni_vp, VEXEC, cnp->cn_cred, 2271 1.164.2.2 chap cnp->cn_lwp); 2272 1.164.2.2 chap if (error != 0) 2273 1.164.2.2 chap break; 2274 1.164.2.2 chap } 2275 1.164.2.2 chap if (ndp->ni_pathlen > 1) 2276 1.164.2.2 chap cp = PNBUF_GET(); 2277 1.164.2.2 chap else 2278 1.164.2.2 chap cp = cnp->cn_pnbuf; 2279 1.164.2.2 chap aiov.iov_base = cp; 2280 1.164.2.2 chap aiov.iov_len = MAXPATHLEN; 2281 1.164.2.2 chap auio.uio_iov = &aiov; 2282 1.164.2.2 chap auio.uio_iovcnt = 1; 2283 1.164.2.2 chap auio.uio_offset = 0; 2284 1.164.2.2 chap auio.uio_rw = UIO_READ; 2285 1.164.2.2 chap auio.uio_resid = MAXPATHLEN; 2286 1.164.2.2 chap UIO_SETUP_SYSSPACE(&auio); 2287 1.164.2.2 chap error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 2288 1.164.2.2 chap if (error) { 2289 1.164.2.2 chap badlink: 2290 1.164.2.2 chap if (ndp->ni_pathlen > 1) 2291 1.164.2.2 chap PNBUF_PUT(cp); 2292 1.164.2.2 chap break; 2293 1.164.2.2 chap } 2294 1.164.2.2 chap linklen = MAXPATHLEN - auio.uio_resid; 2295 1.164.2.2 chap if (linklen == 0) { 2296 1.164.2.2 chap error = ENOENT; 2297 1.164.2.2 chap goto badlink; 2298 1.164.2.2 chap } 2299 1.164.2.2 chap if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 2300 1.164.2.2 chap error = ENAMETOOLONG; 2301 1.164.2.2 chap goto badlink; 2302 1.164.2.2 chap } 2303 1.164.2.2 chap if (ndp->ni_pathlen > 1) { 2304 1.164.2.2 chap memcpy(cp + linklen, ndp->ni_next, ndp->ni_pathlen); 2305 1.164.2.2 chap PNBUF_PUT(cnp->cn_pnbuf); 2306 1.164.2.2 chap cnp->cn_pnbuf = cp; 2307 1.164.2.2 chap } else 2308 1.164.2.2 chap cnp->cn_pnbuf[linklen] = '\0'; 2309 1.164.2.2 chap ndp->ni_pathlen += linklen; 2310 1.164.2.2 chap vput(ndp->ni_vp); 2311 1.164.2.2 chap dp = ndp->ni_dvp; 2312 1.164.2.2 chap /* 2313 1.164.2.2 chap * Check if root directory should replace current directory. 2314 1.164.2.2 chap */ 2315 1.164.2.2 chap if (cnp->cn_pnbuf[0] == '/') { 2316 1.164.2.2 chap vrele(dp); 2317 1.164.2.2 chap dp = ndp->ni_rootdir; 2318 1.164.2.2 chap VREF(dp); 2319 1.164.2.2 chap } 2320 1.164.2.2 chap } 2321 1.164.2.2 chap } 2322 1.164.2.2 chap vrele(ndp->ni_dvp); 2323 1.164.2.2 chap vput(ndp->ni_vp); 2324 1.164.2.2 chap ndp->ni_vp = NULL; 2325 1.164.2.2 chap out: 2326 1.164.2.2 chap PNBUF_PUT(cnp->cn_pnbuf); 2327 1.164.2.2 chap return (error); 2328 1.164.2.2 chap } 2329 1.164.2.2 chap #endif /* NFSSERVER */ 2330 1.164.2.2 chap 2331 1.164.2.2 chap /* 2332 1.164.2.2 chap * A fiddled version of m_adj() that ensures null fill to a 32-bit 2333 1.164.2.2 chap * boundary and only trims off the back end 2334 1.164.2.2 chap * 2335 1.164.2.2 chap * 1. trim off 'len' bytes as m_adj(mp, -len). 2336 1.164.2.2 chap * 2. add zero-padding 'nul' bytes at the end of the mbuf chain. 2337 1.164.2.2 chap */ 2338 1.164.2.2 chap void 2339 1.164.2.2 chap nfs_zeropad(mp, len, nul) 2340 1.164.2.2 chap struct mbuf *mp; 2341 1.164.2.2 chap int len; 2342 1.164.2.2 chap int nul; 2343 1.164.2.2 chap { 2344 1.164.2.2 chap struct mbuf *m; 2345 1.164.2.2 chap int count; 2346 1.164.2.2 chap 2347 1.164.2.2 chap /* 2348 1.164.2.2 chap * Trim from tail. Scan the mbuf chain, 2349 1.164.2.2 chap * calculating its length and finding the last mbuf. 2350 1.164.2.2 chap * If the adjustment only affects this mbuf, then just 2351 1.164.2.2 chap * adjust and return. Otherwise, rescan and truncate 2352 1.164.2.2 chap * after the remaining size. 2353 1.164.2.2 chap */ 2354 1.164.2.2 chap count = 0; 2355 1.164.2.2 chap m = mp; 2356 1.164.2.2 chap for (;;) { 2357 1.164.2.2 chap count += m->m_len; 2358 1.164.2.2 chap if (m->m_next == NULL) 2359 1.164.2.2 chap break; 2360 1.164.2.2 chap m = m->m_next; 2361 1.164.2.2 chap } 2362 1.164.2.2 chap 2363 1.164.2.2 chap KDASSERT(count >= len); 2364 1.164.2.2 chap 2365 1.164.2.2 chap if (m->m_len >= len) { 2366 1.164.2.2 chap m->m_len -= len; 2367 1.164.2.2 chap } else { 2368 1.164.2.2 chap count -= len; 2369 1.164.2.2 chap /* 2370 1.164.2.2 chap * Correct length for chain is "count". 2371 1.164.2.2 chap * Find the mbuf with last data, adjust its length, 2372 1.164.2.2 chap * and toss data from remaining mbufs on chain. 2373 1.164.2.2 chap */ 2374 1.164.2.2 chap for (m = mp; m; m = m->m_next) { 2375 1.164.2.2 chap if (m->m_len >= count) { 2376 1.164.2.2 chap m->m_len = count; 2377 1.164.2.2 chap break; 2378 1.164.2.2 chap } 2379 1.164.2.2 chap count -= m->m_len; 2380 1.164.2.2 chap } 2381 1.164.2.2 chap KASSERT(m && m->m_next); 2382 1.164.2.2 chap m_freem(m->m_next); 2383 1.164.2.2 chap m->m_next = NULL; 2384 1.164.2.2 chap } 2385 1.164.2.2 chap 2386 1.164.2.2 chap KDASSERT(m->m_next == NULL); 2387 1.164.2.2 chap 2388 1.164.2.2 chap /* 2389 1.164.2.2 chap * zero-padding. 2390 1.164.2.2 chap */ 2391 1.164.2.2 chap if (nul > 0) { 2392 1.164.2.2 chap char *cp; 2393 1.164.2.2 chap int i; 2394 1.164.2.2 chap 2395 1.164.2.2 chap if (M_ROMAP(m) || M_TRAILINGSPACE(m) < nul) { 2396 1.164.2.2 chap struct mbuf *n; 2397 1.164.2.2 chap 2398 1.164.2.2 chap KDASSERT(MLEN >= nul); 2399 1.164.2.2 chap n = m_get(M_WAIT, MT_DATA); 2400 1.164.2.2 chap MCLAIM(n, &nfs_mowner); 2401 1.164.2.2 chap n->m_len = nul; 2402 1.164.2.2 chap n->m_next = NULL; 2403 1.164.2.2 chap m->m_next = n; 2404 1.164.2.2 chap cp = mtod(n, caddr_t); 2405 1.164.2.2 chap } else { 2406 1.164.2.2 chap cp = mtod(m, caddr_t) + m->m_len; 2407 1.164.2.2 chap m->m_len += nul; 2408 1.164.2.2 chap } 2409 1.164.2.2 chap for (i = 0; i < nul; i++) 2410 1.164.2.2 chap *cp++ = '\0'; 2411 1.164.2.2 chap } 2412 1.164.2.2 chap return; 2413 1.164.2.2 chap } 2414 1.164.2.2 chap 2415 1.164.2.2 chap /* 2416 1.164.2.2 chap * Make these functions instead of macros, so that the kernel text size 2417 1.164.2.2 chap * doesn't get too big... 2418 1.164.2.2 chap */ 2419 1.164.2.2 chap void 2420 1.164.2.2 chap nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 2421 1.164.2.2 chap struct nfsrv_descript *nfsd; 2422 1.164.2.2 chap int before_ret; 2423 1.164.2.2 chap struct vattr *before_vap; 2424 1.164.2.2 chap int after_ret; 2425 1.164.2.2 chap struct vattr *after_vap; 2426 1.164.2.2 chap struct mbuf **mbp; 2427 1.164.2.2 chap char **bposp; 2428 1.164.2.2 chap { 2429 1.164.2.2 chap struct mbuf *mb = *mbp; 2430 1.164.2.2 chap char *bpos = *bposp; 2431 1.164.2.2 chap u_int32_t *tl; 2432 1.164.2.2 chap 2433 1.164.2.2 chap if (before_ret) { 2434 1.164.2.2 chap nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 2435 1.164.2.2 chap *tl = nfs_false; 2436 1.164.2.2 chap } else { 2437 1.164.2.2 chap nfsm_build(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 2438 1.164.2.2 chap *tl++ = nfs_true; 2439 1.164.2.2 chap txdr_hyper(before_vap->va_size, tl); 2440 1.164.2.2 chap tl += 2; 2441 1.164.2.2 chap txdr_nfsv3time(&(before_vap->va_mtime), tl); 2442 1.164.2.2 chap tl += 2; 2443 1.164.2.2 chap txdr_nfsv3time(&(before_vap->va_ctime), tl); 2444 1.164.2.2 chap } 2445 1.164.2.2 chap *bposp = bpos; 2446 1.164.2.2 chap *mbp = mb; 2447 1.164.2.2 chap nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 2448 1.164.2.2 chap } 2449 1.164.2.2 chap 2450 1.164.2.2 chap void 2451 1.164.2.2 chap nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 2452 1.164.2.2 chap struct nfsrv_descript *nfsd; 2453 1.164.2.2 chap int after_ret; 2454 1.164.2.2 chap struct vattr *after_vap; 2455 1.164.2.2 chap struct mbuf **mbp; 2456 1.164.2.2 chap char **bposp; 2457 1.164.2.2 chap { 2458 1.164.2.2 chap struct mbuf *mb = *mbp; 2459 1.164.2.2 chap char *bpos = *bposp; 2460 1.164.2.2 chap u_int32_t *tl; 2461 1.164.2.2 chap struct nfs_fattr *fp; 2462 1.164.2.2 chap 2463 1.164.2.2 chap if (after_ret) { 2464 1.164.2.2 chap nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 2465 1.164.2.2 chap *tl = nfs_false; 2466 1.164.2.2 chap } else { 2467 1.164.2.2 chap nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_V3FATTR); 2468 1.164.2.2 chap *tl++ = nfs_true; 2469 1.164.2.2 chap fp = (struct nfs_fattr *)tl; 2470 1.164.2.2 chap nfsm_srvfattr(nfsd, after_vap, fp); 2471 1.164.2.2 chap } 2472 1.164.2.2 chap *mbp = mb; 2473 1.164.2.2 chap *bposp = bpos; 2474 1.164.2.2 chap } 2475 1.164.2.2 chap 2476 1.164.2.2 chap void 2477 1.164.2.2 chap nfsm_srvfattr(nfsd, vap, fp) 2478 1.164.2.2 chap struct nfsrv_descript *nfsd; 2479 1.164.2.2 chap struct vattr *vap; 2480 1.164.2.2 chap struct nfs_fattr *fp; 2481 1.164.2.2 chap { 2482 1.164.2.2 chap 2483 1.164.2.2 chap fp->fa_nlink = txdr_unsigned(vap->va_nlink); 2484 1.164.2.2 chap fp->fa_uid = txdr_unsigned(vap->va_uid); 2485 1.164.2.2 chap fp->fa_gid = txdr_unsigned(vap->va_gid); 2486 1.164.2.2 chap if (nfsd->nd_flag & ND_NFSV3) { 2487 1.164.2.2 chap fp->fa_type = vtonfsv3_type(vap->va_type); 2488 1.164.2.2 chap fp->fa_mode = vtonfsv3_mode(vap->va_mode); 2489 1.164.2.2 chap txdr_hyper(vap->va_size, &fp->fa3_size); 2490 1.164.2.2 chap txdr_hyper(vap->va_bytes, &fp->fa3_used); 2491 1.164.2.2 chap fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 2492 1.164.2.2 chap fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 2493 1.164.2.2 chap fp->fa3_fsid.nfsuquad[0] = 0; 2494 1.164.2.2 chap fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 2495 1.164.2.2 chap txdr_hyper(vap->va_fileid, &fp->fa3_fileid); 2496 1.164.2.2 chap txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 2497 1.164.2.2 chap txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 2498 1.164.2.2 chap txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 2499 1.164.2.2 chap } else { 2500 1.164.2.2 chap fp->fa_type = vtonfsv2_type(vap->va_type); 2501 1.164.2.2 chap fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 2502 1.164.2.2 chap fp->fa2_size = txdr_unsigned(vap->va_size); 2503 1.164.2.2 chap fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 2504 1.164.2.2 chap if (vap->va_type == VFIFO) 2505 1.164.2.2 chap fp->fa2_rdev = 0xffffffff; 2506 1.164.2.2 chap else 2507 1.164.2.2 chap fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 2508 1.164.2.2 chap fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 2509 1.164.2.2 chap fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 2510 1.164.2.2 chap fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 2511 1.164.2.2 chap txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 2512 1.164.2.2 chap txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 2513 1.164.2.2 chap txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 2514 1.164.2.2 chap } 2515 1.164.2.2 chap } 2516 1.164.2.2 chap 2517 1.164.2.2 chap #ifdef NFSSERVER 2518 1.164.2.2 chap /* 2519 1.164.2.2 chap * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 2520 1.164.2.2 chap * - look up fsid in mount list (if not found ret error) 2521 1.164.2.2 chap * - get vp and export rights by calling VFS_FHTOVP() 2522 1.164.2.2 chap * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2523 1.164.2.2 chap * - if not lockflag unlock it with VOP_UNLOCK() 2524 1.164.2.2 chap */ 2525 1.164.2.2 chap int 2526 1.164.2.2 chap nfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag, pubflag) 2527 1.164.2.2 chap fhandle_t *fhp; 2528 1.164.2.2 chap int lockflag; 2529 1.164.2.2 chap struct vnode **vpp; 2530 1.164.2.2 chap kauth_cred_t cred; 2531 1.164.2.2 chap struct nfssvc_sock *slp; 2532 1.164.2.2 chap struct mbuf *nam; 2533 1.164.2.2 chap int *rdonlyp; 2534 1.164.2.2 chap int kerbflag; 2535 1.164.2.2 chap { 2536 1.164.2.2 chap struct mount *mp; 2537 1.164.2.2 chap kauth_cred_t credanon; 2538 1.164.2.2 chap int error, exflags; 2539 1.164.2.2 chap struct sockaddr_in *saddr; 2540 1.164.2.2 chap 2541 1.164.2.2 chap *vpp = (struct vnode *)0; 2542 1.164.2.2 chap 2543 1.164.2.2 chap if (nfs_ispublicfh(fhp)) { 2544 1.164.2.2 chap if (!pubflag || !nfs_pub.np_valid) 2545 1.164.2.2 chap return (ESTALE); 2546 1.164.2.2 chap fhp = &nfs_pub.np_handle; 2547 1.164.2.2 chap } 2548 1.164.2.2 chap 2549 1.164.2.2 chap error = netexport_check(&fhp->fh_fsid, nam, &mp, &exflags, &credanon); 2550 1.164.2.2 chap if (error) { 2551 1.164.2.2 chap return error; 2552 1.164.2.2 chap } 2553 1.164.2.2 chap 2554 1.164.2.2 chap error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp); 2555 1.164.2.2 chap if (error) 2556 1.164.2.2 chap return (error); 2557 1.164.2.2 chap 2558 1.164.2.2 chap if (!(exflags & (MNT_EXNORESPORT|MNT_EXPUBLIC))) { 2559 1.164.2.2 chap saddr = mtod(nam, struct sockaddr_in *); 2560 1.164.2.2 chap if ((saddr->sin_family == AF_INET) && 2561 1.164.2.2 chap ntohs(saddr->sin_port) >= IPPORT_RESERVED) { 2562 1.164.2.2 chap vput(*vpp); 2563 1.164.2.2 chap return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2564 1.164.2.2 chap } 2565 1.164.2.2 chap #ifdef INET6 2566 1.164.2.2 chap if ((saddr->sin_family == AF_INET6) && 2567 1.164.2.2 chap ntohs(saddr->sin_port) >= IPV6PORT_RESERVED) { 2568 1.164.2.2 chap vput(*vpp); 2569 1.164.2.2 chap return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2570 1.164.2.2 chap } 2571 1.164.2.2 chap #endif 2572 1.164.2.2 chap } 2573 1.164.2.2 chap /* 2574 1.164.2.2 chap * Check/setup credentials. 2575 1.164.2.2 chap */ 2576 1.164.2.2 chap if (exflags & MNT_EXKERB) { 2577 1.164.2.2 chap if (!kerbflag) { 2578 1.164.2.2 chap vput(*vpp); 2579 1.164.2.2 chap return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2580 1.164.2.2 chap } 2581 1.164.2.2 chap } else if (kerbflag) { 2582 1.164.2.2 chap vput(*vpp); 2583 1.164.2.2 chap return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2584 1.164.2.2 chap } else if (kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER, 2585 1.164.2.2 chap NULL) == 0 || (exflags & MNT_EXPORTANON)) { 2586 1.164.2.2 chap kauth_cred_clone(credanon, cred); 2587 1.164.2.2 chap } 2588 1.164.2.2 chap if (exflags & MNT_EXRDONLY) 2589 1.164.2.2 chap *rdonlyp = 1; 2590 1.164.2.2 chap else 2591 1.164.2.2 chap *rdonlyp = 0; 2592 1.164.2.2 chap if (!lockflag) 2593 1.164.2.2 chap VOP_UNLOCK(*vpp, 0); 2594 1.164.2.2 chap return (0); 2595 1.164.2.2 chap } 2596 1.164.2.2 chap 2597 1.164.2.2 chap /* 2598 1.164.2.2 chap * WebNFS: check if a filehandle is a public filehandle. For v3, this 2599 1.164.2.2 chap * means a length of 0, for v2 it means all zeroes. nfsm_srvmtofh has 2600 1.164.2.2 chap * transformed this to all zeroes in both cases, so check for it. 2601 1.164.2.2 chap */ 2602 1.164.2.2 chap int 2603 1.164.2.2 chap nfs_ispublicfh(fhp) 2604 1.164.2.2 chap fhandle_t *fhp; 2605 1.164.2.2 chap { 2606 1.164.2.2 chap char *cp = (char *)fhp; 2607 1.164.2.2 chap int i; 2608 1.164.2.2 chap 2609 1.164.2.2 chap for (i = 0; i < NFSX_V3FH; i++) 2610 1.164.2.2 chap if (*cp++ != 0) 2611 1.164.2.2 chap return (FALSE); 2612 1.164.2.2 chap return (TRUE); 2613 1.164.2.2 chap } 2614 1.164.2.2 chap #endif /* NFSSERVER */ 2615 1.164.2.2 chap 2616 1.164.2.2 chap /* 2617 1.164.2.2 chap * This function compares two net addresses by family and returns TRUE 2618 1.164.2.2 chap * if they are the same host. 2619 1.164.2.2 chap * If there is any doubt, return FALSE. 2620 1.164.2.2 chap * The AF_INET family is handled as a special case so that address mbufs 2621 1.164.2.2 chap * don't need to be saved to store "struct in_addr", which is only 4 bytes. 2622 1.164.2.2 chap */ 2623 1.164.2.2 chap int 2624 1.164.2.2 chap netaddr_match(family, haddr, nam) 2625 1.164.2.2 chap int family; 2626 1.164.2.2 chap union nethostaddr *haddr; 2627 1.164.2.2 chap struct mbuf *nam; 2628 1.164.2.2 chap { 2629 1.164.2.2 chap struct sockaddr_in *inetaddr; 2630 1.164.2.2 chap 2631 1.164.2.2 chap switch (family) { 2632 1.164.2.2 chap case AF_INET: 2633 1.164.2.2 chap inetaddr = mtod(nam, struct sockaddr_in *); 2634 1.164.2.2 chap if (inetaddr->sin_family == AF_INET && 2635 1.164.2.2 chap inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 2636 1.164.2.2 chap return (1); 2637 1.164.2.2 chap break; 2638 1.164.2.2 chap #ifdef INET6 2639 1.164.2.2 chap case AF_INET6: 2640 1.164.2.2 chap { 2641 1.164.2.2 chap struct sockaddr_in6 *sin6_1, *sin6_2; 2642 1.164.2.2 chap 2643 1.164.2.2 chap sin6_1 = mtod(nam, struct sockaddr_in6 *); 2644 1.164.2.2 chap sin6_2 = mtod(haddr->had_nam, struct sockaddr_in6 *); 2645 1.164.2.2 chap if (sin6_1->sin6_family == AF_INET6 && 2646 1.164.2.2 chap IN6_ARE_ADDR_EQUAL(&sin6_1->sin6_addr, &sin6_2->sin6_addr)) 2647 1.164.2.2 chap return 1; 2648 1.164.2.2 chap } 2649 1.164.2.2 chap #endif 2650 1.164.2.2 chap #ifdef ISO 2651 1.164.2.2 chap case AF_ISO: 2652 1.164.2.2 chap { 2653 1.164.2.2 chap struct sockaddr_iso *isoaddr1, *isoaddr2; 2654 1.164.2.2 chap 2655 1.164.2.2 chap isoaddr1 = mtod(nam, struct sockaddr_iso *); 2656 1.164.2.2 chap isoaddr2 = mtod(haddr->had_nam, struct sockaddr_iso *); 2657 1.164.2.2 chap if (isoaddr1->siso_family == AF_ISO && 2658 1.164.2.2 chap isoaddr1->siso_nlen > 0 && 2659 1.164.2.2 chap isoaddr1->siso_nlen == isoaddr2->siso_nlen && 2660 1.164.2.2 chap SAME_ISOADDR(isoaddr1, isoaddr2)) 2661 1.164.2.2 chap return (1); 2662 1.164.2.2 chap break; 2663 1.164.2.2 chap } 2664 1.164.2.2 chap #endif /* ISO */ 2665 1.164.2.2 chap default: 2666 1.164.2.2 chap break; 2667 1.164.2.2 chap }; 2668 1.164.2.2 chap return (0); 2669 1.164.2.2 chap } 2670 1.164.2.2 chap 2671 1.164.2.2 chap /* 2672 1.164.2.2 chap * The write verifier has changed (probably due to a server reboot), so all 2673 1.164.2.2 chap * PG_NEEDCOMMIT pages will have to be written again. Since they are marked 2674 1.164.2.2 chap * as dirty or are being written out just now, all this takes is clearing 2675 1.164.2.2 chap * the PG_NEEDCOMMIT flag. Once done the new write verifier can be set for 2676 1.164.2.2 chap * the mount point. 2677 1.164.2.2 chap */ 2678 1.164.2.2 chap void 2679 1.164.2.2 chap nfs_clearcommit(mp) 2680 1.164.2.2 chap struct mount *mp; 2681 1.164.2.2 chap { 2682 1.164.2.2 chap struct vnode *vp; 2683 1.164.2.2 chap struct nfsnode *np; 2684 1.164.2.2 chap struct vm_page *pg; 2685 1.164.2.2 chap struct nfsmount *nmp = VFSTONFS(mp); 2686 1.164.2.2 chap 2687 1.164.2.2 chap lockmgr(&nmp->nm_writeverflock, LK_EXCLUSIVE, NULL); 2688 1.164.2.2 chap 2689 1.164.2.2 chap LIST_FOREACH(vp, &mp->mnt_vnodelist, v_mntvnodes) { 2690 1.164.2.2 chap KASSERT(vp->v_mount == mp); 2691 1.164.2.2 chap if (vp->v_type != VREG) 2692 1.164.2.2 chap continue; 2693 1.164.2.2 chap np = VTONFS(vp); 2694 1.164.2.2 chap np->n_pushlo = np->n_pushhi = np->n_pushedlo = 2695 1.164.2.2 chap np->n_pushedhi = 0; 2696 1.164.2.2 chap np->n_commitflags &= 2697 1.164.2.2 chap ~(NFS_COMMIT_PUSH_VALID | NFS_COMMIT_PUSHED_VALID); 2698 1.164.2.2 chap simple_lock(&vp->v_uobj.vmobjlock); 2699 1.164.2.2 chap TAILQ_FOREACH(pg, &vp->v_uobj.memq, listq) { 2700 1.164.2.2 chap pg->flags &= ~PG_NEEDCOMMIT; 2701 1.164.2.2 chap } 2702 1.164.2.2 chap simple_unlock(&vp->v_uobj.vmobjlock); 2703 1.164.2.2 chap } 2704 1.164.2.2 chap simple_lock(&nmp->nm_slock); 2705 1.164.2.2 chap nmp->nm_iflag &= ~NFSMNT_STALEWRITEVERF; 2706 1.164.2.2 chap simple_unlock(&nmp->nm_slock); 2707 1.164.2.2 chap lockmgr(&nmp->nm_writeverflock, LK_RELEASE, NULL); 2708 1.164.2.2 chap } 2709 1.164.2.2 chap 2710 1.164.2.2 chap void 2711 1.164.2.2 chap nfs_merge_commit_ranges(vp) 2712 1.164.2.2 chap struct vnode *vp; 2713 1.164.2.2 chap { 2714 1.164.2.2 chap struct nfsnode *np = VTONFS(vp); 2715 1.164.2.2 chap 2716 1.164.2.2 chap KASSERT(np->n_commitflags & NFS_COMMIT_PUSH_VALID); 2717 1.164.2.2 chap 2718 1.164.2.2 chap if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) { 2719 1.164.2.2 chap np->n_pushedlo = np->n_pushlo; 2720 1.164.2.2 chap np->n_pushedhi = np->n_pushhi; 2721 1.164.2.2 chap np->n_commitflags |= NFS_COMMIT_PUSHED_VALID; 2722 1.164.2.2 chap } else { 2723 1.164.2.2 chap if (np->n_pushlo < np->n_pushedlo) 2724 1.164.2.2 chap np->n_pushedlo = np->n_pushlo; 2725 1.164.2.2 chap if (np->n_pushhi > np->n_pushedhi) 2726 1.164.2.2 chap np->n_pushedhi = np->n_pushhi; 2727 1.164.2.2 chap } 2728 1.164.2.2 chap 2729 1.164.2.2 chap np->n_pushlo = np->n_pushhi = 0; 2730 1.164.2.2 chap np->n_commitflags &= ~NFS_COMMIT_PUSH_VALID; 2731 1.164.2.2 chap 2732 1.164.2.2 chap #ifdef NFS_DEBUG_COMMIT 2733 1.164.2.2 chap printf("merge: committed: %u - %u\n", (unsigned)np->n_pushedlo, 2734 1.164.2.2 chap (unsigned)np->n_pushedhi); 2735 1.164.2.2 chap #endif 2736 1.164.2.2 chap } 2737 1.164.2.2 chap 2738 1.164.2.2 chap int 2739 1.164.2.2 chap nfs_in_committed_range(vp, off, len) 2740 1.164.2.2 chap struct vnode *vp; 2741 1.164.2.2 chap off_t off, len; 2742 1.164.2.2 chap { 2743 1.164.2.2 chap struct nfsnode *np = VTONFS(vp); 2744 1.164.2.2 chap off_t lo, hi; 2745 1.164.2.2 chap 2746 1.164.2.2 chap if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) 2747 1.164.2.2 chap return 0; 2748 1.164.2.2 chap lo = off; 2749 1.164.2.2 chap hi = lo + len; 2750 1.164.2.2 chap 2751 1.164.2.2 chap return (lo >= np->n_pushedlo && hi <= np->n_pushedhi); 2752 1.164.2.2 chap } 2753 1.164.2.2 chap 2754 1.164.2.2 chap int 2755 1.164.2.2 chap nfs_in_tobecommitted_range(vp, off, len) 2756 1.164.2.2 chap struct vnode *vp; 2757 1.164.2.2 chap off_t off, len; 2758 1.164.2.2 chap { 2759 1.164.2.2 chap struct nfsnode *np = VTONFS(vp); 2760 1.164.2.2 chap off_t lo, hi; 2761 1.164.2.2 chap 2762 1.164.2.2 chap if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) 2763 1.164.2.2 chap return 0; 2764 1.164.2.2 chap lo = off; 2765 1.164.2.2 chap hi = lo + len; 2766 1.164.2.2 chap 2767 1.164.2.2 chap return (lo >= np->n_pushlo && hi <= np->n_pushhi); 2768 1.164.2.2 chap } 2769 1.164.2.2 chap 2770 1.164.2.2 chap void 2771 1.164.2.2 chap nfs_add_committed_range(vp, off, len) 2772 1.164.2.2 chap struct vnode *vp; 2773 1.164.2.2 chap off_t off, len; 2774 1.164.2.2 chap { 2775 1.164.2.2 chap struct nfsnode *np = VTONFS(vp); 2776 1.164.2.2 chap off_t lo, hi; 2777 1.164.2.2 chap 2778 1.164.2.2 chap lo = off; 2779 1.164.2.2 chap hi = lo + len; 2780 1.164.2.2 chap 2781 1.164.2.2 chap if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) { 2782 1.164.2.2 chap np->n_pushedlo = lo; 2783 1.164.2.2 chap np->n_pushedhi = hi; 2784 1.164.2.2 chap np->n_commitflags |= NFS_COMMIT_PUSHED_VALID; 2785 1.164.2.2 chap } else { 2786 1.164.2.2 chap if (hi > np->n_pushedhi) 2787 1.164.2.2 chap np->n_pushedhi = hi; 2788 1.164.2.2 chap if (lo < np->n_pushedlo) 2789 1.164.2.2 chap np->n_pushedlo = lo; 2790 1.164.2.2 chap } 2791 1.164.2.2 chap #ifdef NFS_DEBUG_COMMIT 2792 1.164.2.2 chap printf("add: committed: %u - %u\n", (unsigned)np->n_pushedlo, 2793 1.164.2.2 chap (unsigned)np->n_pushedhi); 2794 1.164.2.2 chap #endif 2795 1.164.2.2 chap } 2796 1.164.2.2 chap 2797 1.164.2.2 chap void 2798 1.164.2.2 chap nfs_del_committed_range(vp, off, len) 2799 1.164.2.2 chap struct vnode *vp; 2800 1.164.2.2 chap off_t off, len; 2801 1.164.2.2 chap { 2802 1.164.2.2 chap struct nfsnode *np = VTONFS(vp); 2803 1.164.2.2 chap off_t lo, hi; 2804 1.164.2.2 chap 2805 1.164.2.2 chap if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) 2806 1.164.2.2 chap return; 2807 1.164.2.2 chap 2808 1.164.2.2 chap lo = off; 2809 1.164.2.2 chap hi = lo + len; 2810 1.164.2.2 chap 2811 1.164.2.2 chap if (lo > np->n_pushedhi || hi < np->n_pushedlo) 2812 1.164.2.2 chap return; 2813 1.164.2.2 chap if (lo <= np->n_pushedlo) 2814 1.164.2.2 chap np->n_pushedlo = hi; 2815 1.164.2.2 chap else if (hi >= np->n_pushedhi) 2816 1.164.2.2 chap np->n_pushedhi = lo; 2817 1.164.2.2 chap else { 2818 1.164.2.2 chap /* 2819 1.164.2.2 chap * XXX There's only one range. If the deleted range 2820 1.164.2.2 chap * is in the middle, pick the largest of the 2821 1.164.2.2 chap * contiguous ranges that it leaves. 2822 1.164.2.2 chap */ 2823 1.164.2.2 chap if ((np->n_pushedlo - lo) > (hi - np->n_pushedhi)) 2824 1.164.2.2 chap np->n_pushedhi = lo; 2825 1.164.2.2 chap else 2826 1.164.2.2 chap np->n_pushedlo = hi; 2827 1.164.2.2 chap } 2828 1.164.2.2 chap #ifdef NFS_DEBUG_COMMIT 2829 1.164.2.2 chap printf("del: committed: %u - %u\n", (unsigned)np->n_pushedlo, 2830 1.164.2.2 chap (unsigned)np->n_pushedhi); 2831 1.164.2.2 chap #endif 2832 1.164.2.2 chap } 2833 1.164.2.2 chap 2834 1.164.2.2 chap void 2835 1.164.2.2 chap nfs_add_tobecommitted_range(vp, off, len) 2836 1.164.2.2 chap struct vnode *vp; 2837 1.164.2.2 chap off_t off, len; 2838 1.164.2.2 chap { 2839 1.164.2.2 chap struct nfsnode *np = VTONFS(vp); 2840 1.164.2.2 chap off_t lo, hi; 2841 1.164.2.2 chap 2842 1.164.2.2 chap lo = off; 2843 1.164.2.2 chap hi = lo + len; 2844 1.164.2.2 chap 2845 1.164.2.2 chap if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) { 2846 1.164.2.2 chap np->n_pushlo = lo; 2847 1.164.2.2 chap np->n_pushhi = hi; 2848 1.164.2.2 chap np->n_commitflags |= NFS_COMMIT_PUSH_VALID; 2849 1.164.2.2 chap } else { 2850 1.164.2.2 chap if (lo < np->n_pushlo) 2851 1.164.2.2 chap np->n_pushlo = lo; 2852 1.164.2.2 chap if (hi > np->n_pushhi) 2853 1.164.2.2 chap np->n_pushhi = hi; 2854 1.164.2.2 chap } 2855 1.164.2.2 chap #ifdef NFS_DEBUG_COMMIT 2856 1.164.2.2 chap printf("add: tobecommitted: %u - %u\n", (unsigned)np->n_pushlo, 2857 1.164.2.2 chap (unsigned)np->n_pushhi); 2858 1.164.2.2 chap #endif 2859 1.164.2.2 chap } 2860 1.164.2.2 chap 2861 1.164.2.2 chap void 2862 1.164.2.2 chap nfs_del_tobecommitted_range(vp, off, len) 2863 1.164.2.2 chap struct vnode *vp; 2864 1.164.2.2 chap off_t off, len; 2865 1.164.2.2 chap { 2866 1.164.2.2 chap struct nfsnode *np = VTONFS(vp); 2867 1.164.2.2 chap off_t lo, hi; 2868 1.164.2.2 chap 2869 1.164.2.2 chap if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) 2870 1.164.2.2 chap return; 2871 1.164.2.2 chap 2872 1.164.2.2 chap lo = off; 2873 1.164.2.2 chap hi = lo + len; 2874 1.164.2.2 chap 2875 1.164.2.2 chap if (lo > np->n_pushhi || hi < np->n_pushlo) 2876 1.164.2.2 chap return; 2877 1.164.2.2 chap 2878 1.164.2.2 chap if (lo <= np->n_pushlo) 2879 1.164.2.2 chap np->n_pushlo = hi; 2880 1.164.2.2 chap else if (hi >= np->n_pushhi) 2881 1.164.2.2 chap np->n_pushhi = lo; 2882 1.164.2.2 chap else { 2883 1.164.2.2 chap /* 2884 1.164.2.2 chap * XXX There's only one range. If the deleted range 2885 1.164.2.2 chap * is in the middle, pick the largest of the 2886 1.164.2.2 chap * contiguous ranges that it leaves. 2887 1.164.2.2 chap */ 2888 1.164.2.2 chap if ((np->n_pushlo - lo) > (hi - np->n_pushhi)) 2889 1.164.2.2 chap np->n_pushhi = lo; 2890 1.164.2.2 chap else 2891 1.164.2.2 chap np->n_pushlo = hi; 2892 1.164.2.2 chap } 2893 1.164.2.2 chap #ifdef NFS_DEBUG_COMMIT 2894 1.164.2.2 chap printf("del: tobecommitted: %u - %u\n", (unsigned)np->n_pushlo, 2895 1.164.2.2 chap (unsigned)np->n_pushhi); 2896 1.164.2.2 chap #endif 2897 1.164.2.2 chap } 2898 1.164.2.2 chap 2899 1.164.2.2 chap /* 2900 1.164.2.2 chap * Map errnos to NFS error numbers. For Version 3 also filter out error 2901 1.164.2.2 chap * numbers not specified for the associated procedure. 2902 1.164.2.2 chap */ 2903 1.164.2.2 chap int 2904 1.164.2.2 chap nfsrv_errmap(nd, err) 2905 1.164.2.2 chap struct nfsrv_descript *nd; 2906 1.164.2.2 chap int err; 2907 1.164.2.2 chap { 2908 1.164.2.2 chap const short *defaulterrp, *errp; 2909 1.164.2.2 chap 2910 1.164.2.2 chap if (nd->nd_flag & ND_NFSV3) { 2911 1.164.2.2 chap if (nd->nd_procnum <= NFSPROC_COMMIT) { 2912 1.164.2.2 chap errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 2913 1.164.2.2 chap while (*++errp) { 2914 1.164.2.2 chap if (*errp == err) 2915 1.164.2.2 chap return (err); 2916 1.164.2.2 chap else if (*errp > err) 2917 1.164.2.2 chap break; 2918 1.164.2.2 chap } 2919 1.164.2.2 chap return ((int)*defaulterrp); 2920 1.164.2.2 chap } else 2921 1.164.2.2 chap return (err & 0xffff); 2922 1.164.2.2 chap } 2923 1.164.2.2 chap if (err <= ELAST) 2924 1.164.2.2 chap return ((int)nfsrv_v2errmap[err - 1]); 2925 1.164.2.2 chap return (NFSERR_IO); 2926 1.164.2.2 chap } 2927 1.164.2.2 chap 2928 1.164.2.2 chap u_int32_t 2929 1.164.2.2 chap nfs_getxid() 2930 1.164.2.2 chap { 2931 1.164.2.2 chap static u_int32_t base; 2932 1.164.2.2 chap static u_int32_t nfs_xid = 0; 2933 1.164.2.2 chap static struct simplelock nfs_xidlock = SIMPLELOCK_INITIALIZER; 2934 1.164.2.2 chap u_int32_t newxid; 2935 1.164.2.2 chap 2936 1.164.2.2 chap simple_lock(&nfs_xidlock); 2937 1.164.2.2 chap /* 2938 1.164.2.2 chap * derive initial xid from system time 2939 1.164.2.2 chap * XXX time is invalid if root not yet mounted 2940 1.164.2.2 chap */ 2941 1.164.2.2 chap if (__predict_false(!base && (rootvp))) { 2942 1.164.2.2 chap struct timeval tv; 2943 1.164.2.2 chap 2944 1.164.2.2 chap microtime(&tv); 2945 1.164.2.2 chap base = tv.tv_sec << 12; 2946 1.164.2.2 chap nfs_xid = base; 2947 1.164.2.2 chap } 2948 1.164.2.2 chap 2949 1.164.2.2 chap /* 2950 1.164.2.2 chap * Skip zero xid if it should ever happen. 2951 1.164.2.2 chap */ 2952 1.164.2.2 chap if (__predict_false(++nfs_xid == 0)) 2953 1.164.2.2 chap nfs_xid++; 2954 1.164.2.2 chap newxid = nfs_xid; 2955 1.164.2.2 chap simple_unlock(&nfs_xidlock); 2956 1.164.2.2 chap 2957 1.164.2.2 chap return txdr_unsigned(newxid); 2958 1.164.2.2 chap } 2959 1.164.2.2 chap 2960 1.164.2.2 chap /* 2961 1.164.2.2 chap * assign a new xid for existing request. 2962 1.164.2.2 chap * used for NFSERR_JUKEBOX handling. 2963 1.164.2.2 chap */ 2964 1.164.2.2 chap void 2965 1.164.2.2 chap nfs_renewxid(struct nfsreq *req) 2966 1.164.2.2 chap { 2967 1.164.2.2 chap u_int32_t xid; 2968 1.164.2.2 chap int off; 2969 1.164.2.2 chap 2970 1.164.2.2 chap xid = nfs_getxid(); 2971 1.164.2.2 chap if (req->r_nmp->nm_sotype == SOCK_STREAM) 2972 1.164.2.2 chap off = sizeof(u_int32_t); /* RPC record mark */ 2973 1.164.2.2 chap else 2974 1.164.2.2 chap off = 0; 2975 1.164.2.2 chap 2976 1.164.2.2 chap m_copyback(req->r_mreq, off, sizeof(xid), (void *)&xid); 2977 1.164.2.2 chap req->r_xid = xid; 2978 1.164.2.2 chap } 2979
Indexes created Fri Oct 03 02:09:57 GMT 2025