nfs_subs.c revision 1.143.2.2
1 1.143.2.2 yamt /* $NetBSD: nfs_subs.c,v 1.143.2.2 2005/02/12 18:17:55 yamt Exp $ */ 2 1.143.2.2 yamt 3 1.143.2.2 yamt /* 4 1.143.2.2 yamt * Copyright (c) 1989, 1993 5 1.143.2.2 yamt * The Regents of the University of California. All rights reserved. 6 1.143.2.2 yamt * 7 1.143.2.2 yamt * This code is derived from software contributed to Berkeley by 8 1.143.2.2 yamt * Rick Macklem at The University of Guelph. 9 1.143.2.2 yamt * 10 1.143.2.2 yamt * Redistribution and use in source and binary forms, with or without 11 1.143.2.2 yamt * modification, are permitted provided that the following conditions 12 1.143.2.2 yamt * are met: 13 1.143.2.2 yamt * 1. Redistributions of source code must retain the above copyright 14 1.143.2.2 yamt * notice, this list of conditions and the following disclaimer. 15 1.143.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 16 1.143.2.2 yamt * notice, this list of conditions and the following disclaimer in the 17 1.143.2.2 yamt * documentation and/or other materials provided with the distribution. 18 1.143.2.2 yamt * 3. Neither the name of the University nor the names of its contributors 19 1.143.2.2 yamt * may be used to endorse or promote products derived from this software 20 1.143.2.2 yamt * without specific prior written permission. 21 1.143.2.2 yamt * 22 1.143.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 1.143.2.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 1.143.2.2 yamt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 1.143.2.2 yamt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 1.143.2.2 yamt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 1.143.2.2 yamt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 1.143.2.2 yamt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 1.143.2.2 yamt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 1.143.2.2 yamt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 1.143.2.2 yamt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 1.143.2.2 yamt * SUCH DAMAGE. 33 1.143.2.2 yamt * 34 1.143.2.2 yamt * @(#)nfs_subs.c 8.8 (Berkeley) 5/22/95 35 1.143.2.2 yamt */ 36 1.143.2.2 yamt 37 1.143.2.2 yamt /* 38 1.143.2.2 yamt * Copyright 2000 Wasabi Systems, Inc. 39 1.143.2.2 yamt * All rights reserved. 40 1.143.2.2 yamt * 41 1.143.2.2 yamt * Written by Frank van der Linden for Wasabi Systems, Inc. 42 1.143.2.2 yamt * 43 1.143.2.2 yamt * Redistribution and use in source and binary forms, with or without 44 1.143.2.2 yamt * modification, are permitted provided that the following conditions 45 1.143.2.2 yamt * are met: 46 1.143.2.2 yamt * 1. Redistributions of source code must retain the above copyright 47 1.143.2.2 yamt * notice, this list of conditions and the following disclaimer. 48 1.143.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 49 1.143.2.2 yamt * notice, this list of conditions and the following disclaimer in the 50 1.143.2.2 yamt * documentation and/or other materials provided with the distribution. 51 1.143.2.2 yamt * 3. All advertising materials mentioning features or use of this software 52 1.143.2.2 yamt * must display the following acknowledgement: 53 1.143.2.2 yamt * This product includes software developed for the NetBSD Project by 54 1.143.2.2 yamt * Wasabi Systems, Inc. 55 1.143.2.2 yamt * 4. The name of Wasabi Systems, Inc. may not be used to endorse 56 1.143.2.2 yamt * or promote products derived from this software without specific prior 57 1.143.2.2 yamt * written permission. 58 1.143.2.2 yamt * 59 1.143.2.2 yamt * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 60 1.143.2.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 61 1.143.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 62 1.143.2.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 63 1.143.2.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 64 1.143.2.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 65 1.143.2.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 66 1.143.2.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 67 1.143.2.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 68 1.143.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 69 1.143.2.2 yamt * POSSIBILITY OF SUCH DAMAGE. 70 1.143.2.2 yamt */ 71 1.143.2.2 yamt 72 1.143.2.2 yamt #include <sys/cdefs.h> 73 1.143.2.2 yamt __KERNEL_RCSID(0, "$NetBSD: nfs_subs.c,v 1.143.2.2 2005/02/12 18:17:55 yamt Exp $"); 74 1.143.2.2 yamt 75 1.143.2.2 yamt #include "fs_nfs.h" 76 1.143.2.2 yamt #include "opt_nfs.h" 77 1.143.2.2 yamt #include "opt_nfsserver.h" 78 1.143.2.2 yamt #include "opt_iso.h" 79 1.143.2.2 yamt #include "opt_inet.h" 80 1.143.2.2 yamt 81 1.143.2.2 yamt /* 82 1.143.2.2 yamt * These functions support the macros and help fiddle mbuf chains for 83 1.143.2.2 yamt * the nfs op functions. They do things like create the rpc header and 84 1.143.2.2 yamt * copy data between mbuf chains and uio lists. 85 1.143.2.2 yamt */ 86 1.143.2.2 yamt #include <sys/param.h> 87 1.143.2.2 yamt #include <sys/proc.h> 88 1.143.2.2 yamt #include <sys/systm.h> 89 1.143.2.2 yamt #include <sys/kernel.h> 90 1.143.2.2 yamt #include <sys/mount.h> 91 1.143.2.2 yamt #include <sys/vnode.h> 92 1.143.2.2 yamt #include <sys/namei.h> 93 1.143.2.2 yamt #include <sys/mbuf.h> 94 1.143.2.2 yamt #include <sys/socket.h> 95 1.143.2.2 yamt #include <sys/stat.h> 96 1.143.2.2 yamt #include <sys/malloc.h> 97 1.143.2.2 yamt #include <sys/filedesc.h> 98 1.143.2.2 yamt #include <sys/time.h> 99 1.143.2.2 yamt #include <sys/dirent.h> 100 1.143.2.2 yamt 101 1.143.2.2 yamt #include <uvm/uvm_extern.h> 102 1.143.2.2 yamt 103 1.143.2.2 yamt #include <nfs/rpcv2.h> 104 1.143.2.2 yamt #include <nfs/nfsproto.h> 105 1.143.2.2 yamt #include <nfs/nfsnode.h> 106 1.143.2.2 yamt #include <nfs/nfs.h> 107 1.143.2.2 yamt #include <nfs/xdr_subs.h> 108 1.143.2.2 yamt #include <nfs/nfsm_subs.h> 109 1.143.2.2 yamt #include <nfs/nfsmount.h> 110 1.143.2.2 yamt #include <nfs/nqnfs.h> 111 1.143.2.2 yamt #include <nfs/nfsrtt.h> 112 1.143.2.2 yamt #include <nfs/nfs_var.h> 113 1.143.2.2 yamt 114 1.143.2.2 yamt #include <miscfs/specfs/specdev.h> 115 1.143.2.2 yamt 116 1.143.2.2 yamt #include <netinet/in.h> 117 1.143.2.2 yamt #ifdef ISO 118 1.143.2.2 yamt #include <netiso/iso.h> 119 1.143.2.2 yamt #endif 120 1.143.2.2 yamt 121 1.143.2.2 yamt /* 122 1.143.2.2 yamt * Data items converted to xdr at startup, since they are constant 123 1.143.2.2 yamt * This is kinda hokey, but may save a little time doing byte swaps 124 1.143.2.2 yamt */ 125 1.143.2.2 yamt u_int32_t nfs_xdrneg1; 126 1.143.2.2 yamt u_int32_t rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 127 1.143.2.2 yamt rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 128 1.143.2.2 yamt rpc_auth_kerb; 129 1.143.2.2 yamt u_int32_t nfs_prog, nqnfs_prog, nfs_true, nfs_false; 130 1.143.2.2 yamt 131 1.143.2.2 yamt /* And other global data */ 132 1.143.2.2 yamt const nfstype nfsv2_type[9] = 133 1.143.2.2 yamt { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON, NFCHR, NFNON }; 134 1.143.2.2 yamt const nfstype nfsv3_type[9] = 135 1.143.2.2 yamt { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK, NFFIFO, NFNON }; 136 1.143.2.2 yamt const enum vtype nv2tov_type[8] = 137 1.143.2.2 yamt { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON }; 138 1.143.2.2 yamt const enum vtype nv3tov_type[8] = 139 1.143.2.2 yamt { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO }; 140 1.143.2.2 yamt int nfs_ticks; 141 1.143.2.2 yamt int nfs_commitsize; 142 1.143.2.2 yamt 143 1.143.2.2 yamt MALLOC_DEFINE(M_NFSDIROFF, "NFS diroff", "NFS directory cookies"); 144 1.143.2.2 yamt 145 1.143.2.2 yamt /* NFS client/server stats. */ 146 1.143.2.2 yamt struct nfsstats nfsstats; 147 1.143.2.2 yamt 148 1.143.2.2 yamt /* 149 1.143.2.2 yamt * Mapping of old NFS Version 2 RPC numbers to generic numbers. 150 1.143.2.2 yamt */ 151 1.143.2.2 yamt const int nfsv3_procid[NFS_NPROCS] = { 152 1.143.2.2 yamt NFSPROC_NULL, 153 1.143.2.2 yamt NFSPROC_GETATTR, 154 1.143.2.2 yamt NFSPROC_SETATTR, 155 1.143.2.2 yamt NFSPROC_NOOP, 156 1.143.2.2 yamt NFSPROC_LOOKUP, 157 1.143.2.2 yamt NFSPROC_READLINK, 158 1.143.2.2 yamt NFSPROC_READ, 159 1.143.2.2 yamt NFSPROC_NOOP, 160 1.143.2.2 yamt NFSPROC_WRITE, 161 1.143.2.2 yamt NFSPROC_CREATE, 162 1.143.2.2 yamt NFSPROC_REMOVE, 163 1.143.2.2 yamt NFSPROC_RENAME, 164 1.143.2.2 yamt NFSPROC_LINK, 165 1.143.2.2 yamt NFSPROC_SYMLINK, 166 1.143.2.2 yamt NFSPROC_MKDIR, 167 1.143.2.2 yamt NFSPROC_RMDIR, 168 1.143.2.2 yamt NFSPROC_READDIR, 169 1.143.2.2 yamt NFSPROC_FSSTAT, 170 1.143.2.2 yamt NFSPROC_NOOP, 171 1.143.2.2 yamt NFSPROC_NOOP, 172 1.143.2.2 yamt NFSPROC_NOOP, 173 1.143.2.2 yamt NFSPROC_NOOP, 174 1.143.2.2 yamt NFSPROC_NOOP, 175 1.143.2.2 yamt NFSPROC_NOOP, 176 1.143.2.2 yamt NFSPROC_NOOP, 177 1.143.2.2 yamt NFSPROC_NOOP 178 1.143.2.2 yamt }; 179 1.143.2.2 yamt 180 1.143.2.2 yamt /* 181 1.143.2.2 yamt * and the reverse mapping from generic to Version 2 procedure numbers 182 1.143.2.2 yamt */ 183 1.143.2.2 yamt const int nfsv2_procid[NFS_NPROCS] = { 184 1.143.2.2 yamt NFSV2PROC_NULL, 185 1.143.2.2 yamt NFSV2PROC_GETATTR, 186 1.143.2.2 yamt NFSV2PROC_SETATTR, 187 1.143.2.2 yamt NFSV2PROC_LOOKUP, 188 1.143.2.2 yamt NFSV2PROC_NOOP, 189 1.143.2.2 yamt NFSV2PROC_READLINK, 190 1.143.2.2 yamt NFSV2PROC_READ, 191 1.143.2.2 yamt NFSV2PROC_WRITE, 192 1.143.2.2 yamt NFSV2PROC_CREATE, 193 1.143.2.2 yamt NFSV2PROC_MKDIR, 194 1.143.2.2 yamt NFSV2PROC_SYMLINK, 195 1.143.2.2 yamt NFSV2PROC_CREATE, 196 1.143.2.2 yamt NFSV2PROC_REMOVE, 197 1.143.2.2 yamt NFSV2PROC_RMDIR, 198 1.143.2.2 yamt NFSV2PROC_RENAME, 199 1.143.2.2 yamt NFSV2PROC_LINK, 200 1.143.2.2 yamt NFSV2PROC_READDIR, 201 1.143.2.2 yamt NFSV2PROC_NOOP, 202 1.143.2.2 yamt NFSV2PROC_STATFS, 203 1.143.2.2 yamt NFSV2PROC_NOOP, 204 1.143.2.2 yamt NFSV2PROC_NOOP, 205 1.143.2.2 yamt NFSV2PROC_NOOP, 206 1.143.2.2 yamt NFSV2PROC_NOOP, 207 1.143.2.2 yamt NFSV2PROC_NOOP, 208 1.143.2.2 yamt NFSV2PROC_NOOP, 209 1.143.2.2 yamt NFSV2PROC_NOOP, 210 1.143.2.2 yamt }; 211 1.143.2.2 yamt 212 1.143.2.2 yamt /* 213 1.143.2.2 yamt * Maps errno values to nfs error numbers. 214 1.143.2.2 yamt * Use NFSERR_IO as the catch all for ones not specifically defined in 215 1.143.2.2 yamt * RFC 1094. 216 1.143.2.2 yamt */ 217 1.143.2.2 yamt static const u_char nfsrv_v2errmap[ELAST] = { 218 1.143.2.2 yamt NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 219 1.143.2.2 yamt NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 220 1.143.2.2 yamt NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 221 1.143.2.2 yamt NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 222 1.143.2.2 yamt NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 223 1.143.2.2 yamt NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 224 1.143.2.2 yamt NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 225 1.143.2.2 yamt NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 226 1.143.2.2 yamt NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 227 1.143.2.2 yamt NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 228 1.143.2.2 yamt NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 229 1.143.2.2 yamt NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 230 1.143.2.2 yamt NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 231 1.143.2.2 yamt NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 232 1.143.2.2 yamt NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 233 1.143.2.2 yamt NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 234 1.143.2.2 yamt NFSERR_IO, NFSERR_IO, 235 1.143.2.2 yamt }; 236 1.143.2.2 yamt 237 1.143.2.2 yamt /* 238 1.143.2.2 yamt * Maps errno values to nfs error numbers. 239 1.143.2.2 yamt * Although it is not obvious whether or not NFS clients really care if 240 1.143.2.2 yamt * a returned error value is in the specified list for the procedure, the 241 1.143.2.2 yamt * safest thing to do is filter them appropriately. For Version 2, the 242 1.143.2.2 yamt * X/Open XNFS document is the only specification that defines error values 243 1.143.2.2 yamt * for each RPC (The RFC simply lists all possible error values for all RPCs), 244 1.143.2.2 yamt * so I have decided to not do this for Version 2. 245 1.143.2.2 yamt * The first entry is the default error return and the rest are the valid 246 1.143.2.2 yamt * errors for that RPC in increasing numeric order. 247 1.143.2.2 yamt */ 248 1.143.2.2 yamt static const short nfsv3err_null[] = { 249 1.143.2.2 yamt 0, 250 1.143.2.2 yamt 0, 251 1.143.2.2 yamt }; 252 1.143.2.2 yamt 253 1.143.2.2 yamt static const short nfsv3err_getattr[] = { 254 1.143.2.2 yamt NFSERR_IO, 255 1.143.2.2 yamt NFSERR_IO, 256 1.143.2.2 yamt NFSERR_STALE, 257 1.143.2.2 yamt NFSERR_BADHANDLE, 258 1.143.2.2 yamt NFSERR_SERVERFAULT, 259 1.143.2.2 yamt 0, 260 1.143.2.2 yamt }; 261 1.143.2.2 yamt 262 1.143.2.2 yamt static const short nfsv3err_setattr[] = { 263 1.143.2.2 yamt NFSERR_IO, 264 1.143.2.2 yamt NFSERR_PERM, 265 1.143.2.2 yamt NFSERR_IO, 266 1.143.2.2 yamt NFSERR_ACCES, 267 1.143.2.2 yamt NFSERR_INVAL, 268 1.143.2.2 yamt NFSERR_NOSPC, 269 1.143.2.2 yamt NFSERR_ROFS, 270 1.143.2.2 yamt NFSERR_DQUOT, 271 1.143.2.2 yamt NFSERR_STALE, 272 1.143.2.2 yamt NFSERR_BADHANDLE, 273 1.143.2.2 yamt NFSERR_NOT_SYNC, 274 1.143.2.2 yamt NFSERR_SERVERFAULT, 275 1.143.2.2 yamt 0, 276 1.143.2.2 yamt }; 277 1.143.2.2 yamt 278 1.143.2.2 yamt static const short nfsv3err_lookup[] = { 279 1.143.2.2 yamt NFSERR_IO, 280 1.143.2.2 yamt NFSERR_NOENT, 281 1.143.2.2 yamt NFSERR_IO, 282 1.143.2.2 yamt NFSERR_ACCES, 283 1.143.2.2 yamt NFSERR_NOTDIR, 284 1.143.2.2 yamt NFSERR_NAMETOL, 285 1.143.2.2 yamt NFSERR_STALE, 286 1.143.2.2 yamt NFSERR_BADHANDLE, 287 1.143.2.2 yamt NFSERR_SERVERFAULT, 288 1.143.2.2 yamt 0, 289 1.143.2.2 yamt }; 290 1.143.2.2 yamt 291 1.143.2.2 yamt static const short nfsv3err_access[] = { 292 1.143.2.2 yamt NFSERR_IO, 293 1.143.2.2 yamt NFSERR_IO, 294 1.143.2.2 yamt NFSERR_STALE, 295 1.143.2.2 yamt NFSERR_BADHANDLE, 296 1.143.2.2 yamt NFSERR_SERVERFAULT, 297 1.143.2.2 yamt 0, 298 1.143.2.2 yamt }; 299 1.143.2.2 yamt 300 1.143.2.2 yamt static const short nfsv3err_readlink[] = { 301 1.143.2.2 yamt NFSERR_IO, 302 1.143.2.2 yamt NFSERR_IO, 303 1.143.2.2 yamt NFSERR_ACCES, 304 1.143.2.2 yamt NFSERR_INVAL, 305 1.143.2.2 yamt NFSERR_STALE, 306 1.143.2.2 yamt NFSERR_BADHANDLE, 307 1.143.2.2 yamt NFSERR_NOTSUPP, 308 1.143.2.2 yamt NFSERR_SERVERFAULT, 309 1.143.2.2 yamt 0, 310 1.143.2.2 yamt }; 311 1.143.2.2 yamt 312 1.143.2.2 yamt static const short nfsv3err_read[] = { 313 1.143.2.2 yamt NFSERR_IO, 314 1.143.2.2 yamt NFSERR_IO, 315 1.143.2.2 yamt NFSERR_NXIO, 316 1.143.2.2 yamt NFSERR_ACCES, 317 1.143.2.2 yamt NFSERR_INVAL, 318 1.143.2.2 yamt NFSERR_STALE, 319 1.143.2.2 yamt NFSERR_BADHANDLE, 320 1.143.2.2 yamt NFSERR_SERVERFAULT, 321 1.143.2.2 yamt NFSERR_JUKEBOX, 322 1.143.2.2 yamt 0, 323 1.143.2.2 yamt }; 324 1.143.2.2 yamt 325 1.143.2.2 yamt static const short nfsv3err_write[] = { 326 1.143.2.2 yamt NFSERR_IO, 327 1.143.2.2 yamt NFSERR_IO, 328 1.143.2.2 yamt NFSERR_ACCES, 329 1.143.2.2 yamt NFSERR_INVAL, 330 1.143.2.2 yamt NFSERR_FBIG, 331 1.143.2.2 yamt NFSERR_NOSPC, 332 1.143.2.2 yamt NFSERR_ROFS, 333 1.143.2.2 yamt NFSERR_DQUOT, 334 1.143.2.2 yamt NFSERR_STALE, 335 1.143.2.2 yamt NFSERR_BADHANDLE, 336 1.143.2.2 yamt NFSERR_SERVERFAULT, 337 1.143.2.2 yamt NFSERR_JUKEBOX, 338 1.143.2.2 yamt 0, 339 1.143.2.2 yamt }; 340 1.143.2.2 yamt 341 1.143.2.2 yamt static const short nfsv3err_create[] = { 342 1.143.2.2 yamt NFSERR_IO, 343 1.143.2.2 yamt NFSERR_IO, 344 1.143.2.2 yamt NFSERR_ACCES, 345 1.143.2.2 yamt NFSERR_EXIST, 346 1.143.2.2 yamt NFSERR_NOTDIR, 347 1.143.2.2 yamt NFSERR_NOSPC, 348 1.143.2.2 yamt NFSERR_ROFS, 349 1.143.2.2 yamt NFSERR_NAMETOL, 350 1.143.2.2 yamt NFSERR_DQUOT, 351 1.143.2.2 yamt NFSERR_STALE, 352 1.143.2.2 yamt NFSERR_BADHANDLE, 353 1.143.2.2 yamt NFSERR_NOTSUPP, 354 1.143.2.2 yamt NFSERR_SERVERFAULT, 355 1.143.2.2 yamt 0, 356 1.143.2.2 yamt }; 357 1.143.2.2 yamt 358 1.143.2.2 yamt static const short nfsv3err_mkdir[] = { 359 1.143.2.2 yamt NFSERR_IO, 360 1.143.2.2 yamt NFSERR_IO, 361 1.143.2.2 yamt NFSERR_ACCES, 362 1.143.2.2 yamt NFSERR_EXIST, 363 1.143.2.2 yamt NFSERR_NOTDIR, 364 1.143.2.2 yamt NFSERR_NOSPC, 365 1.143.2.2 yamt NFSERR_ROFS, 366 1.143.2.2 yamt NFSERR_NAMETOL, 367 1.143.2.2 yamt NFSERR_DQUOT, 368 1.143.2.2 yamt NFSERR_STALE, 369 1.143.2.2 yamt NFSERR_BADHANDLE, 370 1.143.2.2 yamt NFSERR_NOTSUPP, 371 1.143.2.2 yamt NFSERR_SERVERFAULT, 372 1.143.2.2 yamt 0, 373 1.143.2.2 yamt }; 374 1.143.2.2 yamt 375 1.143.2.2 yamt static const short nfsv3err_symlink[] = { 376 1.143.2.2 yamt NFSERR_IO, 377 1.143.2.2 yamt NFSERR_IO, 378 1.143.2.2 yamt NFSERR_ACCES, 379 1.143.2.2 yamt NFSERR_EXIST, 380 1.143.2.2 yamt NFSERR_NOTDIR, 381 1.143.2.2 yamt NFSERR_NOSPC, 382 1.143.2.2 yamt NFSERR_ROFS, 383 1.143.2.2 yamt NFSERR_NAMETOL, 384 1.143.2.2 yamt NFSERR_DQUOT, 385 1.143.2.2 yamt NFSERR_STALE, 386 1.143.2.2 yamt NFSERR_BADHANDLE, 387 1.143.2.2 yamt NFSERR_NOTSUPP, 388 1.143.2.2 yamt NFSERR_SERVERFAULT, 389 1.143.2.2 yamt 0, 390 1.143.2.2 yamt }; 391 1.143.2.2 yamt 392 1.143.2.2 yamt static const short nfsv3err_mknod[] = { 393 1.143.2.2 yamt NFSERR_IO, 394 1.143.2.2 yamt NFSERR_IO, 395 1.143.2.2 yamt NFSERR_ACCES, 396 1.143.2.2 yamt NFSERR_EXIST, 397 1.143.2.2 yamt NFSERR_NOTDIR, 398 1.143.2.2 yamt NFSERR_NOSPC, 399 1.143.2.2 yamt NFSERR_ROFS, 400 1.143.2.2 yamt NFSERR_NAMETOL, 401 1.143.2.2 yamt NFSERR_DQUOT, 402 1.143.2.2 yamt NFSERR_STALE, 403 1.143.2.2 yamt NFSERR_BADHANDLE, 404 1.143.2.2 yamt NFSERR_NOTSUPP, 405 1.143.2.2 yamt NFSERR_SERVERFAULT, 406 1.143.2.2 yamt NFSERR_BADTYPE, 407 1.143.2.2 yamt 0, 408 1.143.2.2 yamt }; 409 1.143.2.2 yamt 410 1.143.2.2 yamt static const short nfsv3err_remove[] = { 411 1.143.2.2 yamt NFSERR_IO, 412 1.143.2.2 yamt NFSERR_NOENT, 413 1.143.2.2 yamt NFSERR_IO, 414 1.143.2.2 yamt NFSERR_ACCES, 415 1.143.2.2 yamt NFSERR_NOTDIR, 416 1.143.2.2 yamt NFSERR_ROFS, 417 1.143.2.2 yamt NFSERR_NAMETOL, 418 1.143.2.2 yamt NFSERR_STALE, 419 1.143.2.2 yamt NFSERR_BADHANDLE, 420 1.143.2.2 yamt NFSERR_SERVERFAULT, 421 1.143.2.2 yamt 0, 422 1.143.2.2 yamt }; 423 1.143.2.2 yamt 424 1.143.2.2 yamt static const short nfsv3err_rmdir[] = { 425 1.143.2.2 yamt NFSERR_IO, 426 1.143.2.2 yamt NFSERR_NOENT, 427 1.143.2.2 yamt NFSERR_IO, 428 1.143.2.2 yamt NFSERR_ACCES, 429 1.143.2.2 yamt NFSERR_EXIST, 430 1.143.2.2 yamt NFSERR_NOTDIR, 431 1.143.2.2 yamt NFSERR_INVAL, 432 1.143.2.2 yamt NFSERR_ROFS, 433 1.143.2.2 yamt NFSERR_NAMETOL, 434 1.143.2.2 yamt NFSERR_NOTEMPTY, 435 1.143.2.2 yamt NFSERR_STALE, 436 1.143.2.2 yamt NFSERR_BADHANDLE, 437 1.143.2.2 yamt NFSERR_NOTSUPP, 438 1.143.2.2 yamt NFSERR_SERVERFAULT, 439 1.143.2.2 yamt 0, 440 1.143.2.2 yamt }; 441 1.143.2.2 yamt 442 1.143.2.2 yamt static const short nfsv3err_rename[] = { 443 1.143.2.2 yamt NFSERR_IO, 444 1.143.2.2 yamt NFSERR_NOENT, 445 1.143.2.2 yamt NFSERR_IO, 446 1.143.2.2 yamt NFSERR_ACCES, 447 1.143.2.2 yamt NFSERR_EXIST, 448 1.143.2.2 yamt NFSERR_XDEV, 449 1.143.2.2 yamt NFSERR_NOTDIR, 450 1.143.2.2 yamt NFSERR_ISDIR, 451 1.143.2.2 yamt NFSERR_INVAL, 452 1.143.2.2 yamt NFSERR_NOSPC, 453 1.143.2.2 yamt NFSERR_ROFS, 454 1.143.2.2 yamt NFSERR_MLINK, 455 1.143.2.2 yamt NFSERR_NAMETOL, 456 1.143.2.2 yamt NFSERR_NOTEMPTY, 457 1.143.2.2 yamt NFSERR_DQUOT, 458 1.143.2.2 yamt NFSERR_STALE, 459 1.143.2.2 yamt NFSERR_BADHANDLE, 460 1.143.2.2 yamt NFSERR_NOTSUPP, 461 1.143.2.2 yamt NFSERR_SERVERFAULT, 462 1.143.2.2 yamt 0, 463 1.143.2.2 yamt }; 464 1.143.2.2 yamt 465 1.143.2.2 yamt static const short nfsv3err_link[] = { 466 1.143.2.2 yamt NFSERR_IO, 467 1.143.2.2 yamt NFSERR_IO, 468 1.143.2.2 yamt NFSERR_ACCES, 469 1.143.2.2 yamt NFSERR_EXIST, 470 1.143.2.2 yamt NFSERR_XDEV, 471 1.143.2.2 yamt NFSERR_NOTDIR, 472 1.143.2.2 yamt NFSERR_INVAL, 473 1.143.2.2 yamt NFSERR_NOSPC, 474 1.143.2.2 yamt NFSERR_ROFS, 475 1.143.2.2 yamt NFSERR_MLINK, 476 1.143.2.2 yamt NFSERR_NAMETOL, 477 1.143.2.2 yamt NFSERR_DQUOT, 478 1.143.2.2 yamt NFSERR_STALE, 479 1.143.2.2 yamt NFSERR_BADHANDLE, 480 1.143.2.2 yamt NFSERR_NOTSUPP, 481 1.143.2.2 yamt NFSERR_SERVERFAULT, 482 1.143.2.2 yamt 0, 483 1.143.2.2 yamt }; 484 1.143.2.2 yamt 485 1.143.2.2 yamt static const short nfsv3err_readdir[] = { 486 1.143.2.2 yamt NFSERR_IO, 487 1.143.2.2 yamt NFSERR_IO, 488 1.143.2.2 yamt NFSERR_ACCES, 489 1.143.2.2 yamt NFSERR_NOTDIR, 490 1.143.2.2 yamt NFSERR_STALE, 491 1.143.2.2 yamt NFSERR_BADHANDLE, 492 1.143.2.2 yamt NFSERR_BAD_COOKIE, 493 1.143.2.2 yamt NFSERR_TOOSMALL, 494 1.143.2.2 yamt NFSERR_SERVERFAULT, 495 1.143.2.2 yamt 0, 496 1.143.2.2 yamt }; 497 1.143.2.2 yamt 498 1.143.2.2 yamt static const short nfsv3err_readdirplus[] = { 499 1.143.2.2 yamt NFSERR_IO, 500 1.143.2.2 yamt NFSERR_IO, 501 1.143.2.2 yamt NFSERR_ACCES, 502 1.143.2.2 yamt NFSERR_NOTDIR, 503 1.143.2.2 yamt NFSERR_STALE, 504 1.143.2.2 yamt NFSERR_BADHANDLE, 505 1.143.2.2 yamt NFSERR_BAD_COOKIE, 506 1.143.2.2 yamt NFSERR_NOTSUPP, 507 1.143.2.2 yamt NFSERR_TOOSMALL, 508 1.143.2.2 yamt NFSERR_SERVERFAULT, 509 1.143.2.2 yamt 0, 510 1.143.2.2 yamt }; 511 1.143.2.2 yamt 512 1.143.2.2 yamt static const short nfsv3err_fsstat[] = { 513 1.143.2.2 yamt NFSERR_IO, 514 1.143.2.2 yamt NFSERR_IO, 515 1.143.2.2 yamt NFSERR_STALE, 516 1.143.2.2 yamt NFSERR_BADHANDLE, 517 1.143.2.2 yamt NFSERR_SERVERFAULT, 518 1.143.2.2 yamt 0, 519 1.143.2.2 yamt }; 520 1.143.2.2 yamt 521 1.143.2.2 yamt static const short nfsv3err_fsinfo[] = { 522 1.143.2.2 yamt NFSERR_STALE, 523 1.143.2.2 yamt NFSERR_STALE, 524 1.143.2.2 yamt NFSERR_BADHANDLE, 525 1.143.2.2 yamt NFSERR_SERVERFAULT, 526 1.143.2.2 yamt 0, 527 1.143.2.2 yamt }; 528 1.143.2.2 yamt 529 1.143.2.2 yamt static const short nfsv3err_pathconf[] = { 530 1.143.2.2 yamt NFSERR_STALE, 531 1.143.2.2 yamt NFSERR_STALE, 532 1.143.2.2 yamt NFSERR_BADHANDLE, 533 1.143.2.2 yamt NFSERR_SERVERFAULT, 534 1.143.2.2 yamt 0, 535 1.143.2.2 yamt }; 536 1.143.2.2 yamt 537 1.143.2.2 yamt static const short nfsv3err_commit[] = { 538 1.143.2.2 yamt NFSERR_IO, 539 1.143.2.2 yamt NFSERR_IO, 540 1.143.2.2 yamt NFSERR_STALE, 541 1.143.2.2 yamt NFSERR_BADHANDLE, 542 1.143.2.2 yamt NFSERR_SERVERFAULT, 543 1.143.2.2 yamt 0, 544 1.143.2.2 yamt }; 545 1.143.2.2 yamt 546 1.143.2.2 yamt static const short * const nfsrv_v3errmap[] = { 547 1.143.2.2 yamt nfsv3err_null, 548 1.143.2.2 yamt nfsv3err_getattr, 549 1.143.2.2 yamt nfsv3err_setattr, 550 1.143.2.2 yamt nfsv3err_lookup, 551 1.143.2.2 yamt nfsv3err_access, 552 1.143.2.2 yamt nfsv3err_readlink, 553 1.143.2.2 yamt nfsv3err_read, 554 1.143.2.2 yamt nfsv3err_write, 555 1.143.2.2 yamt nfsv3err_create, 556 1.143.2.2 yamt nfsv3err_mkdir, 557 1.143.2.2 yamt nfsv3err_symlink, 558 1.143.2.2 yamt nfsv3err_mknod, 559 1.143.2.2 yamt nfsv3err_remove, 560 1.143.2.2 yamt nfsv3err_rmdir, 561 1.143.2.2 yamt nfsv3err_rename, 562 1.143.2.2 yamt nfsv3err_link, 563 1.143.2.2 yamt nfsv3err_readdir, 564 1.143.2.2 yamt nfsv3err_readdirplus, 565 1.143.2.2 yamt nfsv3err_fsstat, 566 1.143.2.2 yamt nfsv3err_fsinfo, 567 1.143.2.2 yamt nfsv3err_pathconf, 568 1.143.2.2 yamt nfsv3err_commit, 569 1.143.2.2 yamt }; 570 1.143.2.2 yamt 571 1.143.2.2 yamt extern struct nfsrtt nfsrtt; 572 1.143.2.2 yamt extern time_t nqnfsstarttime; 573 1.143.2.2 yamt extern int nqsrv_clockskew; 574 1.143.2.2 yamt extern int nqsrv_writeslack; 575 1.143.2.2 yamt extern int nqsrv_maxlease; 576 1.143.2.2 yamt extern const int nqnfs_piggy[NFS_NPROCS]; 577 1.143.2.2 yamt extern struct nfsnodehashhead *nfsnodehashtbl; 578 1.143.2.2 yamt extern u_long nfsnodehash; 579 1.143.2.2 yamt 580 1.143.2.2 yamt u_long nfsdirhashmask; 581 1.143.2.2 yamt 582 1.143.2.2 yamt int nfs_webnamei __P((struct nameidata *, struct vnode *, struct proc *)); 583 1.143.2.2 yamt 584 1.143.2.2 yamt /* 585 1.143.2.2 yamt * Create the header for an rpc request packet 586 1.143.2.2 yamt * The hsiz is the size of the rest of the nfs request header. 587 1.143.2.2 yamt * (just used to decide if a cluster is a good idea) 588 1.143.2.2 yamt */ 589 1.143.2.2 yamt struct mbuf * 590 1.143.2.2 yamt nfsm_reqh(np, procid, hsiz, bposp) 591 1.143.2.2 yamt struct nfsnode *np; 592 1.143.2.2 yamt u_long procid; 593 1.143.2.2 yamt int hsiz; 594 1.143.2.2 yamt caddr_t *bposp; 595 1.143.2.2 yamt { 596 1.143.2.2 yamt struct mbuf *mb; 597 1.143.2.2 yamt caddr_t bpos; 598 1.143.2.2 yamt #ifndef NFS_V2_ONLY 599 1.143.2.2 yamt struct nfsmount *nmp; 600 1.143.2.2 yamt u_int32_t *tl; 601 1.143.2.2 yamt int nqflag; 602 1.143.2.2 yamt #endif 603 1.143.2.2 yamt 604 1.143.2.2 yamt mb = m_get(M_WAIT, MT_DATA); 605 1.143.2.2 yamt MCLAIM(mb, &nfs_mowner); 606 1.143.2.2 yamt if (hsiz >= MINCLSIZE) 607 1.143.2.2 yamt m_clget(mb, M_WAIT); 608 1.143.2.2 yamt mb->m_len = 0; 609 1.143.2.2 yamt bpos = mtod(mb, caddr_t); 610 1.143.2.2 yamt 611 1.143.2.2 yamt #ifndef NFS_V2_ONLY 612 1.143.2.2 yamt /* 613 1.143.2.2 yamt * For NQNFS, add lease request. 614 1.143.2.2 yamt */ 615 1.143.2.2 yamt if (np) { 616 1.143.2.2 yamt nmp = VFSTONFS(np->n_vnode->v_mount); 617 1.143.2.2 yamt if (nmp->nm_flag & NFSMNT_NQNFS) { 618 1.143.2.2 yamt nqflag = NQNFS_NEEDLEASE(np, procid); 619 1.143.2.2 yamt if (nqflag) { 620 1.143.2.2 yamt nfsm_build(tl, u_int32_t *, 2*NFSX_UNSIGNED); 621 1.143.2.2 yamt *tl++ = txdr_unsigned(nqflag); 622 1.143.2.2 yamt *tl = txdr_unsigned(nmp->nm_leaseterm); 623 1.143.2.2 yamt } else { 624 1.143.2.2 yamt nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 625 1.143.2.2 yamt *tl = 0; 626 1.143.2.2 yamt } 627 1.143.2.2 yamt } 628 1.143.2.2 yamt } 629 1.143.2.2 yamt #endif 630 1.143.2.2 yamt /* Finally, return values */ 631 1.143.2.2 yamt *bposp = bpos; 632 1.143.2.2 yamt return (mb); 633 1.143.2.2 yamt } 634 1.143.2.2 yamt 635 1.143.2.2 yamt /* 636 1.143.2.2 yamt * Build the RPC header and fill in the authorization info. 637 1.143.2.2 yamt * The authorization string argument is only used when the credentials 638 1.143.2.2 yamt * come from outside of the kernel. 639 1.143.2.2 yamt * Returns the head of the mbuf list. 640 1.143.2.2 yamt */ 641 1.143.2.2 yamt struct mbuf * 642 1.143.2.2 yamt nfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 643 1.143.2.2 yamt verf_str, mrest, mrest_len, mbp, xidp) 644 1.143.2.2 yamt struct ucred *cr; 645 1.143.2.2 yamt int nmflag; 646 1.143.2.2 yamt int procid; 647 1.143.2.2 yamt int auth_type; 648 1.143.2.2 yamt int auth_len; 649 1.143.2.2 yamt char *auth_str; 650 1.143.2.2 yamt int verf_len; 651 1.143.2.2 yamt char *verf_str; 652 1.143.2.2 yamt struct mbuf *mrest; 653 1.143.2.2 yamt int mrest_len; 654 1.143.2.2 yamt struct mbuf **mbp; 655 1.143.2.2 yamt u_int32_t *xidp; 656 1.143.2.2 yamt { 657 1.143.2.2 yamt struct mbuf *mb; 658 1.143.2.2 yamt u_int32_t *tl; 659 1.143.2.2 yamt caddr_t bpos; 660 1.143.2.2 yamt int i; 661 1.143.2.2 yamt struct mbuf *mreq; 662 1.143.2.2 yamt int siz, grpsiz, authsiz; 663 1.143.2.2 yamt 664 1.143.2.2 yamt authsiz = nfsm_rndup(auth_len); 665 1.143.2.2 yamt mb = m_gethdr(M_WAIT, MT_DATA); 666 1.143.2.2 yamt MCLAIM(mb, &nfs_mowner); 667 1.143.2.2 yamt if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 668 1.143.2.2 yamt m_clget(mb, M_WAIT); 669 1.143.2.2 yamt } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 670 1.143.2.2 yamt MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 671 1.143.2.2 yamt } else { 672 1.143.2.2 yamt MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 673 1.143.2.2 yamt } 674 1.143.2.2 yamt mb->m_len = 0; 675 1.143.2.2 yamt mreq = mb; 676 1.143.2.2 yamt bpos = mtod(mb, caddr_t); 677 1.143.2.2 yamt 678 1.143.2.2 yamt /* 679 1.143.2.2 yamt * First the RPC header. 680 1.143.2.2 yamt */ 681 1.143.2.2 yamt nfsm_build(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 682 1.143.2.2 yamt 683 1.143.2.2 yamt *tl++ = *xidp = nfs_getxid(); 684 1.143.2.2 yamt *tl++ = rpc_call; 685 1.143.2.2 yamt *tl++ = rpc_vers; 686 1.143.2.2 yamt if (nmflag & NFSMNT_NQNFS) { 687 1.143.2.2 yamt *tl++ = txdr_unsigned(NQNFS_PROG); 688 1.143.2.2 yamt *tl++ = txdr_unsigned(NQNFS_VER3); 689 1.143.2.2 yamt } else { 690 1.143.2.2 yamt *tl++ = txdr_unsigned(NFS_PROG); 691 1.143.2.2 yamt if (nmflag & NFSMNT_NFSV3) 692 1.143.2.2 yamt *tl++ = txdr_unsigned(NFS_VER3); 693 1.143.2.2 yamt else 694 1.143.2.2 yamt *tl++ = txdr_unsigned(NFS_VER2); 695 1.143.2.2 yamt } 696 1.143.2.2 yamt if (nmflag & NFSMNT_NFSV3) 697 1.143.2.2 yamt *tl++ = txdr_unsigned(procid); 698 1.143.2.2 yamt else 699 1.143.2.2 yamt *tl++ = txdr_unsigned(nfsv2_procid[procid]); 700 1.143.2.2 yamt 701 1.143.2.2 yamt /* 702 1.143.2.2 yamt * And then the authorization cred. 703 1.143.2.2 yamt */ 704 1.143.2.2 yamt *tl++ = txdr_unsigned(auth_type); 705 1.143.2.2 yamt *tl = txdr_unsigned(authsiz); 706 1.143.2.2 yamt switch (auth_type) { 707 1.143.2.2 yamt case RPCAUTH_UNIX: 708 1.143.2.2 yamt nfsm_build(tl, u_int32_t *, auth_len); 709 1.143.2.2 yamt *tl++ = 0; /* stamp ?? */ 710 1.143.2.2 yamt *tl++ = 0; /* NULL hostname */ 711 1.143.2.2 yamt *tl++ = txdr_unsigned(cr->cr_uid); 712 1.143.2.2 yamt *tl++ = txdr_unsigned(cr->cr_gid); 713 1.143.2.2 yamt grpsiz = (auth_len >> 2) - 5; 714 1.143.2.2 yamt *tl++ = txdr_unsigned(grpsiz); 715 1.143.2.2 yamt for (i = 0; i < grpsiz; i++) 716 1.143.2.2 yamt *tl++ = txdr_unsigned(cr->cr_groups[i]); 717 1.143.2.2 yamt break; 718 1.143.2.2 yamt case RPCAUTH_KERB4: 719 1.143.2.2 yamt siz = auth_len; 720 1.143.2.2 yamt while (siz > 0) { 721 1.143.2.2 yamt if (M_TRAILINGSPACE(mb) == 0) { 722 1.143.2.2 yamt struct mbuf *mb2; 723 1.143.2.2 yamt mb2 = m_get(M_WAIT, MT_DATA); 724 1.143.2.2 yamt MCLAIM(mb2, &nfs_mowner); 725 1.143.2.2 yamt if (siz >= MINCLSIZE) 726 1.143.2.2 yamt m_clget(mb2, M_WAIT); 727 1.143.2.2 yamt mb->m_next = mb2; 728 1.143.2.2 yamt mb = mb2; 729 1.143.2.2 yamt mb->m_len = 0; 730 1.143.2.2 yamt bpos = mtod(mb, caddr_t); 731 1.143.2.2 yamt } 732 1.143.2.2 yamt i = min(siz, M_TRAILINGSPACE(mb)); 733 1.143.2.2 yamt memcpy(bpos, auth_str, i); 734 1.143.2.2 yamt mb->m_len += i; 735 1.143.2.2 yamt auth_str += i; 736 1.143.2.2 yamt bpos += i; 737 1.143.2.2 yamt siz -= i; 738 1.143.2.2 yamt } 739 1.143.2.2 yamt if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 740 1.143.2.2 yamt for (i = 0; i < siz; i++) 741 1.143.2.2 yamt *bpos++ = '\0'; 742 1.143.2.2 yamt mb->m_len += siz; 743 1.143.2.2 yamt } 744 1.143.2.2 yamt break; 745 1.143.2.2 yamt }; 746 1.143.2.2 yamt 747 1.143.2.2 yamt /* 748 1.143.2.2 yamt * And the verifier... 749 1.143.2.2 yamt */ 750 1.143.2.2 yamt nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 751 1.143.2.2 yamt if (verf_str) { 752 1.143.2.2 yamt *tl++ = txdr_unsigned(RPCAUTH_KERB4); 753 1.143.2.2 yamt *tl = txdr_unsigned(verf_len); 754 1.143.2.2 yamt siz = verf_len; 755 1.143.2.2 yamt while (siz > 0) { 756 1.143.2.2 yamt if (M_TRAILINGSPACE(mb) == 0) { 757 1.143.2.2 yamt struct mbuf *mb2; 758 1.143.2.2 yamt mb2 = m_get(M_WAIT, MT_DATA); 759 1.143.2.2 yamt MCLAIM(mb2, &nfs_mowner); 760 1.143.2.2 yamt if (siz >= MINCLSIZE) 761 1.143.2.2 yamt m_clget(mb2, M_WAIT); 762 1.143.2.2 yamt mb->m_next = mb2; 763 1.143.2.2 yamt mb = mb2; 764 1.143.2.2 yamt mb->m_len = 0; 765 1.143.2.2 yamt bpos = mtod(mb, caddr_t); 766 1.143.2.2 yamt } 767 1.143.2.2 yamt i = min(siz, M_TRAILINGSPACE(mb)); 768 1.143.2.2 yamt memcpy(bpos, verf_str, i); 769 1.143.2.2 yamt mb->m_len += i; 770 1.143.2.2 yamt verf_str += i; 771 1.143.2.2 yamt bpos += i; 772 1.143.2.2 yamt siz -= i; 773 1.143.2.2 yamt } 774 1.143.2.2 yamt if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 775 1.143.2.2 yamt for (i = 0; i < siz; i++) 776 1.143.2.2 yamt *bpos++ = '\0'; 777 1.143.2.2 yamt mb->m_len += siz; 778 1.143.2.2 yamt } 779 1.143.2.2 yamt } else { 780 1.143.2.2 yamt *tl++ = txdr_unsigned(RPCAUTH_NULL); 781 1.143.2.2 yamt *tl = 0; 782 1.143.2.2 yamt } 783 1.143.2.2 yamt mb->m_next = mrest; 784 1.143.2.2 yamt mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 785 1.143.2.2 yamt mreq->m_pkthdr.rcvif = (struct ifnet *)0; 786 1.143.2.2 yamt *mbp = mb; 787 1.143.2.2 yamt return (mreq); 788 1.143.2.2 yamt } 789 1.143.2.2 yamt 790 1.143.2.2 yamt /* 791 1.143.2.2 yamt * copies mbuf chain to the uio scatter/gather list 792 1.143.2.2 yamt */ 793 1.143.2.2 yamt int 794 1.143.2.2 yamt nfsm_mbuftouio(mrep, uiop, siz, dpos) 795 1.143.2.2 yamt struct mbuf **mrep; 796 1.143.2.2 yamt struct uio *uiop; 797 1.143.2.2 yamt int siz; 798 1.143.2.2 yamt caddr_t *dpos; 799 1.143.2.2 yamt { 800 1.143.2.2 yamt char *mbufcp, *uiocp; 801 1.143.2.2 yamt int xfer, left, len; 802 1.143.2.2 yamt struct mbuf *mp; 803 1.143.2.2 yamt long uiosiz, rem; 804 1.143.2.2 yamt int error = 0; 805 1.143.2.2 yamt 806 1.143.2.2 yamt mp = *mrep; 807 1.143.2.2 yamt mbufcp = *dpos; 808 1.143.2.2 yamt len = mtod(mp, caddr_t)+mp->m_len-mbufcp; 809 1.143.2.2 yamt rem = nfsm_rndup(siz)-siz; 810 1.143.2.2 yamt while (siz > 0) { 811 1.143.2.2 yamt if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 812 1.143.2.2 yamt return (EFBIG); 813 1.143.2.2 yamt left = uiop->uio_iov->iov_len; 814 1.143.2.2 yamt uiocp = uiop->uio_iov->iov_base; 815 1.143.2.2 yamt if (left > siz) 816 1.143.2.2 yamt left = siz; 817 1.143.2.2 yamt uiosiz = left; 818 1.143.2.2 yamt while (left > 0) { 819 1.143.2.2 yamt while (len == 0) { 820 1.143.2.2 yamt mp = mp->m_next; 821 1.143.2.2 yamt if (mp == NULL) 822 1.143.2.2 yamt return (EBADRPC); 823 1.143.2.2 yamt mbufcp = mtod(mp, caddr_t); 824 1.143.2.2 yamt len = mp->m_len; 825 1.143.2.2 yamt } 826 1.143.2.2 yamt xfer = (left > len) ? len : left; 827 1.143.2.2 yamt #ifdef notdef 828 1.143.2.2 yamt /* Not Yet.. */ 829 1.143.2.2 yamt if (uiop->uio_iov->iov_op != NULL) 830 1.143.2.2 yamt (*(uiop->uio_iov->iov_op)) 831 1.143.2.2 yamt (mbufcp, uiocp, xfer); 832 1.143.2.2 yamt else 833 1.143.2.2 yamt #endif 834 1.143.2.2 yamt if (uiop->uio_segflg == UIO_SYSSPACE) 835 1.143.2.2 yamt memcpy(uiocp, mbufcp, xfer); 836 1.143.2.2 yamt else 837 1.143.2.2 yamt copyout(mbufcp, uiocp, xfer); 838 1.143.2.2 yamt left -= xfer; 839 1.143.2.2 yamt len -= xfer; 840 1.143.2.2 yamt mbufcp += xfer; 841 1.143.2.2 yamt uiocp += xfer; 842 1.143.2.2 yamt uiop->uio_offset += xfer; 843 1.143.2.2 yamt uiop->uio_resid -= xfer; 844 1.143.2.2 yamt } 845 1.143.2.2 yamt if (uiop->uio_iov->iov_len <= siz) { 846 1.143.2.2 yamt uiop->uio_iovcnt--; 847 1.143.2.2 yamt uiop->uio_iov++; 848 1.143.2.2 yamt } else { 849 1.143.2.2 yamt uiop->uio_iov->iov_base = 850 1.143.2.2 yamt (caddr_t)uiop->uio_iov->iov_base + uiosiz; 851 1.143.2.2 yamt uiop->uio_iov->iov_len -= uiosiz; 852 1.143.2.2 yamt } 853 1.143.2.2 yamt siz -= uiosiz; 854 1.143.2.2 yamt } 855 1.143.2.2 yamt *dpos = mbufcp; 856 1.143.2.2 yamt *mrep = mp; 857 1.143.2.2 yamt if (rem > 0) { 858 1.143.2.2 yamt if (len < rem) 859 1.143.2.2 yamt error = nfs_adv(mrep, dpos, rem, len); 860 1.143.2.2 yamt else 861 1.143.2.2 yamt *dpos += rem; 862 1.143.2.2 yamt } 863 1.143.2.2 yamt return (error); 864 1.143.2.2 yamt } 865 1.143.2.2 yamt 866 1.143.2.2 yamt /* 867 1.143.2.2 yamt * copies a uio scatter/gather list to an mbuf chain. 868 1.143.2.2 yamt * NOTE: can ony handle iovcnt == 1 869 1.143.2.2 yamt */ 870 1.143.2.2 yamt int 871 1.143.2.2 yamt nfsm_uiotombuf(uiop, mq, siz, bpos) 872 1.143.2.2 yamt struct uio *uiop; 873 1.143.2.2 yamt struct mbuf **mq; 874 1.143.2.2 yamt int siz; 875 1.143.2.2 yamt caddr_t *bpos; 876 1.143.2.2 yamt { 877 1.143.2.2 yamt char *uiocp; 878 1.143.2.2 yamt struct mbuf *mp, *mp2; 879 1.143.2.2 yamt int xfer, left, mlen; 880 1.143.2.2 yamt int uiosiz, clflg, rem; 881 1.143.2.2 yamt char *cp; 882 1.143.2.2 yamt 883 1.143.2.2 yamt #ifdef DIAGNOSTIC 884 1.143.2.2 yamt if (uiop->uio_iovcnt != 1) 885 1.143.2.2 yamt panic("nfsm_uiotombuf: iovcnt != 1"); 886 1.143.2.2 yamt #endif 887 1.143.2.2 yamt 888 1.143.2.2 yamt if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 889 1.143.2.2 yamt clflg = 1; 890 1.143.2.2 yamt else 891 1.143.2.2 yamt clflg = 0; 892 1.143.2.2 yamt rem = nfsm_rndup(siz)-siz; 893 1.143.2.2 yamt mp = mp2 = *mq; 894 1.143.2.2 yamt while (siz > 0) { 895 1.143.2.2 yamt left = uiop->uio_iov->iov_len; 896 1.143.2.2 yamt uiocp = uiop->uio_iov->iov_base; 897 1.143.2.2 yamt if (left > siz) 898 1.143.2.2 yamt left = siz; 899 1.143.2.2 yamt uiosiz = left; 900 1.143.2.2 yamt while (left > 0) { 901 1.143.2.2 yamt mlen = M_TRAILINGSPACE(mp); 902 1.143.2.2 yamt if (mlen == 0) { 903 1.143.2.2 yamt mp = m_get(M_WAIT, MT_DATA); 904 1.143.2.2 yamt MCLAIM(mp, &nfs_mowner); 905 1.143.2.2 yamt if (clflg) 906 1.143.2.2 yamt m_clget(mp, M_WAIT); 907 1.143.2.2 yamt mp->m_len = 0; 908 1.143.2.2 yamt mp2->m_next = mp; 909 1.143.2.2 yamt mp2 = mp; 910 1.143.2.2 yamt mlen = M_TRAILINGSPACE(mp); 911 1.143.2.2 yamt } 912 1.143.2.2 yamt xfer = (left > mlen) ? mlen : left; 913 1.143.2.2 yamt #ifdef notdef 914 1.143.2.2 yamt /* Not Yet.. */ 915 1.143.2.2 yamt if (uiop->uio_iov->iov_op != NULL) 916 1.143.2.2 yamt (*(uiop->uio_iov->iov_op)) 917 1.143.2.2 yamt (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 918 1.143.2.2 yamt else 919 1.143.2.2 yamt #endif 920 1.143.2.2 yamt if (uiop->uio_segflg == UIO_SYSSPACE) 921 1.143.2.2 yamt memcpy(mtod(mp, caddr_t)+mp->m_len, uiocp, xfer); 922 1.143.2.2 yamt else 923 1.143.2.2 yamt copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 924 1.143.2.2 yamt mp->m_len += xfer; 925 1.143.2.2 yamt left -= xfer; 926 1.143.2.2 yamt uiocp += xfer; 927 1.143.2.2 yamt uiop->uio_offset += xfer; 928 1.143.2.2 yamt uiop->uio_resid -= xfer; 929 1.143.2.2 yamt } 930 1.143.2.2 yamt uiop->uio_iov->iov_base = (caddr_t)uiop->uio_iov->iov_base + 931 1.143.2.2 yamt uiosiz; 932 1.143.2.2 yamt uiop->uio_iov->iov_len -= uiosiz; 933 1.143.2.2 yamt siz -= uiosiz; 934 1.143.2.2 yamt } 935 1.143.2.2 yamt if (rem > 0) { 936 1.143.2.2 yamt if (rem > M_TRAILINGSPACE(mp)) { 937 1.143.2.2 yamt mp = m_get(M_WAIT, MT_DATA); 938 1.143.2.2 yamt MCLAIM(mp, &nfs_mowner); 939 1.143.2.2 yamt mp->m_len = 0; 940 1.143.2.2 yamt mp2->m_next = mp; 941 1.143.2.2 yamt } 942 1.143.2.2 yamt cp = mtod(mp, caddr_t)+mp->m_len; 943 1.143.2.2 yamt for (left = 0; left < rem; left++) 944 1.143.2.2 yamt *cp++ = '\0'; 945 1.143.2.2 yamt mp->m_len += rem; 946 1.143.2.2 yamt *bpos = cp; 947 1.143.2.2 yamt } else 948 1.143.2.2 yamt *bpos = mtod(mp, caddr_t)+mp->m_len; 949 1.143.2.2 yamt *mq = mp; 950 1.143.2.2 yamt return (0); 951 1.143.2.2 yamt } 952 1.143.2.2 yamt 953 1.143.2.2 yamt /* 954 1.143.2.2 yamt * Get at least "siz" bytes of correctly aligned data. 955 1.143.2.2 yamt * When called the mbuf pointers are not necessarily correct, 956 1.143.2.2 yamt * dsosp points to what ought to be in m_data and left contains 957 1.143.2.2 yamt * what ought to be in m_len. 958 1.143.2.2 yamt * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 959 1.143.2.2 yamt * cases. (The macros use the vars. dpos and dpos2) 960 1.143.2.2 yamt */ 961 1.143.2.2 yamt int 962 1.143.2.2 yamt nfsm_disct(mdp, dposp, siz, left, cp2) 963 1.143.2.2 yamt struct mbuf **mdp; 964 1.143.2.2 yamt caddr_t *dposp; 965 1.143.2.2 yamt int siz; 966 1.143.2.2 yamt int left; 967 1.143.2.2 yamt caddr_t *cp2; 968 1.143.2.2 yamt { 969 1.143.2.2 yamt struct mbuf *m1, *m2; 970 1.143.2.2 yamt struct mbuf *havebuf = NULL; 971 1.143.2.2 yamt caddr_t src = *dposp; 972 1.143.2.2 yamt caddr_t dst; 973 1.143.2.2 yamt int len; 974 1.143.2.2 yamt 975 1.143.2.2 yamt #ifdef DEBUG 976 1.143.2.2 yamt if (left < 0) 977 1.143.2.2 yamt panic("nfsm_disct: left < 0"); 978 1.143.2.2 yamt #endif 979 1.143.2.2 yamt m1 = *mdp; 980 1.143.2.2 yamt /* 981 1.143.2.2 yamt * Skip through the mbuf chain looking for an mbuf with 982 1.143.2.2 yamt * some data. If the first mbuf found has enough data 983 1.143.2.2 yamt * and it is correctly aligned return it. 984 1.143.2.2 yamt */ 985 1.143.2.2 yamt while (left == 0) { 986 1.143.2.2 yamt havebuf = m1; 987 1.143.2.2 yamt *mdp = m1 = m1->m_next; 988 1.143.2.2 yamt if (m1 == NULL) 989 1.143.2.2 yamt return (EBADRPC); 990 1.143.2.2 yamt src = mtod(m1, caddr_t); 991 1.143.2.2 yamt left = m1->m_len; 992 1.143.2.2 yamt /* 993 1.143.2.2 yamt * If we start a new mbuf and it is big enough 994 1.143.2.2 yamt * and correctly aligned just return it, don't 995 1.143.2.2 yamt * do any pull up. 996 1.143.2.2 yamt */ 997 1.143.2.2 yamt if (left >= siz && nfsm_aligned(src)) { 998 1.143.2.2 yamt *cp2 = src; 999 1.143.2.2 yamt *dposp = src + siz; 1000 1.143.2.2 yamt return (0); 1001 1.143.2.2 yamt } 1002 1.143.2.2 yamt } 1003 1.143.2.2 yamt if (m1->m_flags & M_EXT) { 1004 1.143.2.2 yamt if (havebuf) { 1005 1.143.2.2 yamt /* If the first mbuf with data has external data 1006 1.143.2.2 yamt * and there is a previous empty mbuf use it 1007 1.143.2.2 yamt * to move the data into. 1008 1.143.2.2 yamt */ 1009 1.143.2.2 yamt m2 = m1; 1010 1.143.2.2 yamt *mdp = m1 = havebuf; 1011 1.143.2.2 yamt if (m1->m_flags & M_EXT) { 1012 1.143.2.2 yamt MEXTREMOVE(m1); 1013 1.143.2.2 yamt } 1014 1.143.2.2 yamt } else { 1015 1.143.2.2 yamt /* 1016 1.143.2.2 yamt * If the first mbuf has a external data 1017 1.143.2.2 yamt * and there is no previous empty mbuf 1018 1.143.2.2 yamt * allocate a new mbuf and move the external 1019 1.143.2.2 yamt * data to the new mbuf. Also make the first 1020 1.143.2.2 yamt * mbuf look empty. 1021 1.143.2.2 yamt */ 1022 1.143.2.2 yamt m2 = m_get(M_WAIT, MT_DATA); 1023 1.143.2.2 yamt m2->m_ext = m1->m_ext; 1024 1.143.2.2 yamt m2->m_data = src; 1025 1.143.2.2 yamt m2->m_len = left; 1026 1.143.2.2 yamt MCLADDREFERENCE(m1, m2); 1027 1.143.2.2 yamt MEXTREMOVE(m1); 1028 1.143.2.2 yamt m2->m_next = m1->m_next; 1029 1.143.2.2 yamt m1->m_next = m2; 1030 1.143.2.2 yamt } 1031 1.143.2.2 yamt m1->m_len = 0; 1032 1.143.2.2 yamt if (m1->m_flags & M_PKTHDR) 1033 1.143.2.2 yamt dst = m1->m_pktdat; 1034 1.143.2.2 yamt else 1035 1.143.2.2 yamt dst = m1->m_dat; 1036 1.143.2.2 yamt m1->m_data = dst; 1037 1.143.2.2 yamt } else { 1038 1.143.2.2 yamt /* 1039 1.143.2.2 yamt * If the first mbuf has no external data 1040 1.143.2.2 yamt * move the data to the front of the mbuf. 1041 1.143.2.2 yamt */ 1042 1.143.2.2 yamt if (m1->m_flags & M_PKTHDR) 1043 1.143.2.2 yamt dst = m1->m_pktdat; 1044 1.143.2.2 yamt else 1045 1.143.2.2 yamt dst = m1->m_dat; 1046 1.143.2.2 yamt m1->m_data = dst; 1047 1.143.2.2 yamt if (dst != src) 1048 1.143.2.2 yamt memmove(dst, src, left); 1049 1.143.2.2 yamt dst += left; 1050 1.143.2.2 yamt m1->m_len = left; 1051 1.143.2.2 yamt m2 = m1->m_next; 1052 1.143.2.2 yamt } 1053 1.143.2.2 yamt *cp2 = m1->m_data; 1054 1.143.2.2 yamt *dposp = mtod(m1, caddr_t) + siz; 1055 1.143.2.2 yamt /* 1056 1.143.2.2 yamt * Loop through mbufs pulling data up into first mbuf until 1057 1.143.2.2 yamt * the first mbuf is full or there is no more data to 1058 1.143.2.2 yamt * pullup. 1059 1.143.2.2 yamt */ 1060 1.143.2.2 yamt while ((len = M_TRAILINGSPACE(m1)) != 0 && m2) { 1061 1.143.2.2 yamt if ((len = min(len, m2->m_len)) != 0) 1062 1.143.2.2 yamt memcpy(dst, m2->m_data, len); 1063 1.143.2.2 yamt m1->m_len += len; 1064 1.143.2.2 yamt dst += len; 1065 1.143.2.2 yamt m2->m_data += len; 1066 1.143.2.2 yamt m2->m_len -= len; 1067 1.143.2.2 yamt m2 = m2->m_next; 1068 1.143.2.2 yamt } 1069 1.143.2.2 yamt if (m1->m_len < siz) 1070 1.143.2.2 yamt return (EBADRPC); 1071 1.143.2.2 yamt return (0); 1072 1.143.2.2 yamt } 1073 1.143.2.2 yamt 1074 1.143.2.2 yamt /* 1075 1.143.2.2 yamt * Advance the position in the mbuf chain. 1076 1.143.2.2 yamt */ 1077 1.143.2.2 yamt int 1078 1.143.2.2 yamt nfs_adv(mdp, dposp, offs, left) 1079 1.143.2.2 yamt struct mbuf **mdp; 1080 1.143.2.2 yamt caddr_t *dposp; 1081 1.143.2.2 yamt int offs; 1082 1.143.2.2 yamt int left; 1083 1.143.2.2 yamt { 1084 1.143.2.2 yamt struct mbuf *m; 1085 1.143.2.2 yamt int s; 1086 1.143.2.2 yamt 1087 1.143.2.2 yamt m = *mdp; 1088 1.143.2.2 yamt s = left; 1089 1.143.2.2 yamt while (s < offs) { 1090 1.143.2.2 yamt offs -= s; 1091 1.143.2.2 yamt m = m->m_next; 1092 1.143.2.2 yamt if (m == NULL) 1093 1.143.2.2 yamt return (EBADRPC); 1094 1.143.2.2 yamt s = m->m_len; 1095 1.143.2.2 yamt } 1096 1.143.2.2 yamt *mdp = m; 1097 1.143.2.2 yamt *dposp = mtod(m, caddr_t)+offs; 1098 1.143.2.2 yamt return (0); 1099 1.143.2.2 yamt } 1100 1.143.2.2 yamt 1101 1.143.2.2 yamt /* 1102 1.143.2.2 yamt * Copy a string into mbufs for the hard cases... 1103 1.143.2.2 yamt */ 1104 1.143.2.2 yamt int 1105 1.143.2.2 yamt nfsm_strtmbuf(mb, bpos, cp, siz) 1106 1.143.2.2 yamt struct mbuf **mb; 1107 1.143.2.2 yamt char **bpos; 1108 1.143.2.2 yamt const char *cp; 1109 1.143.2.2 yamt long siz; 1110 1.143.2.2 yamt { 1111 1.143.2.2 yamt struct mbuf *m1 = NULL, *m2; 1112 1.143.2.2 yamt long left, xfer, len, tlen; 1113 1.143.2.2 yamt u_int32_t *tl; 1114 1.143.2.2 yamt int putsize; 1115 1.143.2.2 yamt 1116 1.143.2.2 yamt putsize = 1; 1117 1.143.2.2 yamt m2 = *mb; 1118 1.143.2.2 yamt left = M_TRAILINGSPACE(m2); 1119 1.143.2.2 yamt if (left > 0) { 1120 1.143.2.2 yamt tl = ((u_int32_t *)(*bpos)); 1121 1.143.2.2 yamt *tl++ = txdr_unsigned(siz); 1122 1.143.2.2 yamt putsize = 0; 1123 1.143.2.2 yamt left -= NFSX_UNSIGNED; 1124 1.143.2.2 yamt m2->m_len += NFSX_UNSIGNED; 1125 1.143.2.2 yamt if (left > 0) { 1126 1.143.2.2 yamt memcpy((caddr_t) tl, cp, left); 1127 1.143.2.2 yamt siz -= left; 1128 1.143.2.2 yamt cp += left; 1129 1.143.2.2 yamt m2->m_len += left; 1130 1.143.2.2 yamt left = 0; 1131 1.143.2.2 yamt } 1132 1.143.2.2 yamt } 1133 1.143.2.2 yamt /* Loop around adding mbufs */ 1134 1.143.2.2 yamt while (siz > 0) { 1135 1.143.2.2 yamt m1 = m_get(M_WAIT, MT_DATA); 1136 1.143.2.2 yamt MCLAIM(m1, &nfs_mowner); 1137 1.143.2.2 yamt if (siz > MLEN) 1138 1.143.2.2 yamt m_clget(m1, M_WAIT); 1139 1.143.2.2 yamt m1->m_len = NFSMSIZ(m1); 1140 1.143.2.2 yamt m2->m_next = m1; 1141 1.143.2.2 yamt m2 = m1; 1142 1.143.2.2 yamt tl = mtod(m1, u_int32_t *); 1143 1.143.2.2 yamt tlen = 0; 1144 1.143.2.2 yamt if (putsize) { 1145 1.143.2.2 yamt *tl++ = txdr_unsigned(siz); 1146 1.143.2.2 yamt m1->m_len -= NFSX_UNSIGNED; 1147 1.143.2.2 yamt tlen = NFSX_UNSIGNED; 1148 1.143.2.2 yamt putsize = 0; 1149 1.143.2.2 yamt } 1150 1.143.2.2 yamt if (siz < m1->m_len) { 1151 1.143.2.2 yamt len = nfsm_rndup(siz); 1152 1.143.2.2 yamt xfer = siz; 1153 1.143.2.2 yamt if (xfer < len) 1154 1.143.2.2 yamt *(tl+(xfer>>2)) = 0; 1155 1.143.2.2 yamt } else { 1156 1.143.2.2 yamt xfer = len = m1->m_len; 1157 1.143.2.2 yamt } 1158 1.143.2.2 yamt memcpy((caddr_t) tl, cp, xfer); 1159 1.143.2.2 yamt m1->m_len = len+tlen; 1160 1.143.2.2 yamt siz -= xfer; 1161 1.143.2.2 yamt cp += xfer; 1162 1.143.2.2 yamt } 1163 1.143.2.2 yamt *mb = m1; 1164 1.143.2.2 yamt *bpos = mtod(m1, caddr_t)+m1->m_len; 1165 1.143.2.2 yamt return (0); 1166 1.143.2.2 yamt } 1167 1.143.2.2 yamt 1168 1.143.2.2 yamt /* 1169 1.143.2.2 yamt * Directory caching routines. They work as follows: 1170 1.143.2.2 yamt * - a cache is maintained per VDIR nfsnode. 1171 1.143.2.2 yamt * - for each offset cookie that is exported to userspace, and can 1172 1.143.2.2 yamt * thus be thrown back at us as an offset to VOP_READDIR, store 1173 1.143.2.2 yamt * information in the cache. 1174 1.143.2.2 yamt * - cached are: 1175 1.143.2.2 yamt * - cookie itself 1176 1.143.2.2 yamt * - blocknumber (essentially just a search key in the buffer cache) 1177 1.143.2.2 yamt * - entry number in block. 1178 1.143.2.2 yamt * - offset cookie of block in which this entry is stored 1179 1.143.2.2 yamt * - 32 bit cookie if NFSMNT_XLATECOOKIE is used. 1180 1.143.2.2 yamt * - entries are looked up in a hash table 1181 1.143.2.2 yamt * - also maintained is an LRU list of entries, used to determine 1182 1.143.2.2 yamt * which ones to delete if the cache grows too large. 1183 1.143.2.2 yamt * - if 32 <-> 64 translation mode is requested for a filesystem, 1184 1.143.2.2 yamt * the cache also functions as a translation table 1185 1.143.2.2 yamt * - in the translation case, invalidating the cache does not mean 1186 1.143.2.2 yamt * flushing it, but just marking entries as invalid, except for 1187 1.143.2.2 yamt * the <64bit cookie, 32bitcookie> pair which is still valid, to 1188 1.143.2.2 yamt * still be able to use the cache as a translation table. 1189 1.143.2.2 yamt * - 32 bit cookies are uniquely created by combining the hash table 1190 1.143.2.2 yamt * entry value, and one generation count per hash table entry, 1191 1.143.2.2 yamt * incremented each time an entry is appended to the chain. 1192 1.143.2.2 yamt * - the cache is invalidated each time a direcory is modified 1193 1.143.2.2 yamt * - sanity checks are also done; if an entry in a block turns 1194 1.143.2.2 yamt * out not to have a matching cookie, the cache is invalidated 1195 1.143.2.2 yamt * and a new block starting from the wanted offset is fetched from 1196 1.143.2.2 yamt * the server. 1197 1.143.2.2 yamt * - directory entries as read from the server are extended to contain 1198 1.143.2.2 yamt * the 64bit and, optionally, the 32bit cookies, for sanity checking 1199 1.143.2.2 yamt * the cache and exporting them to userspace through the cookie 1200 1.143.2.2 yamt * argument to VOP_READDIR. 1201 1.143.2.2 yamt */ 1202 1.143.2.2 yamt 1203 1.143.2.2 yamt u_long 1204 1.143.2.2 yamt nfs_dirhash(off) 1205 1.143.2.2 yamt off_t off; 1206 1.143.2.2 yamt { 1207 1.143.2.2 yamt int i; 1208 1.143.2.2 yamt char *cp = (char *)&off; 1209 1.143.2.2 yamt u_long sum = 0L; 1210 1.143.2.2 yamt 1211 1.143.2.2 yamt for (i = 0 ; i < sizeof (off); i++) 1212 1.143.2.2 yamt sum += *cp++; 1213 1.143.2.2 yamt 1214 1.143.2.2 yamt return sum; 1215 1.143.2.2 yamt } 1216 1.143.2.2 yamt 1217 1.143.2.2 yamt #define _NFSDC_MTX(np) (&NFSTOV(np)->v_interlock) 1218 1.143.2.2 yamt #define NFSDC_LOCK(np) simple_lock(_NFSDC_MTX(np)) 1219 1.143.2.2 yamt #define NFSDC_UNLOCK(np) simple_unlock(_NFSDC_MTX(np)) 1220 1.143.2.2 yamt #define NFSDC_ASSERT_LOCKED(np) LOCK_ASSERT(simple_lock_held(_NFSDC_MTX(np))) 1221 1.143.2.2 yamt 1222 1.143.2.2 yamt void 1223 1.143.2.2 yamt nfs_initdircache(vp) 1224 1.143.2.2 yamt struct vnode *vp; 1225 1.143.2.2 yamt { 1226 1.143.2.2 yamt struct nfsnode *np = VTONFS(vp); 1227 1.143.2.2 yamt struct nfsdirhashhead *dircache; 1228 1.143.2.2 yamt 1229 1.143.2.2 yamt dircache = hashinit(NFS_DIRHASHSIZ, HASH_LIST, M_NFSDIROFF, 1230 1.143.2.2 yamt M_WAITOK, &nfsdirhashmask); 1231 1.143.2.2 yamt 1232 1.143.2.2 yamt NFSDC_LOCK(np); 1233 1.143.2.2 yamt if (np->n_dircache == NULL) { 1234 1.143.2.2 yamt np->n_dircachesize = 0; 1235 1.143.2.2 yamt np->n_dircache = dircache; 1236 1.143.2.2 yamt dircache = NULL; 1237 1.143.2.2 yamt TAILQ_INIT(&np->n_dirchain); 1238 1.143.2.2 yamt } 1239 1.143.2.2 yamt NFSDC_UNLOCK(np); 1240 1.143.2.2 yamt if (dircache) 1241 1.143.2.2 yamt hashdone(dircache, M_NFSDIROFF); 1242 1.143.2.2 yamt } 1243 1.143.2.2 yamt 1244 1.143.2.2 yamt void 1245 1.143.2.2 yamt nfs_initdirxlatecookie(vp) 1246 1.143.2.2 yamt struct vnode *vp; 1247 1.143.2.2 yamt { 1248 1.143.2.2 yamt struct nfsnode *np = VTONFS(vp); 1249 1.143.2.2 yamt unsigned *dirgens; 1250 1.143.2.2 yamt 1251 1.143.2.2 yamt KASSERT(VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_XLATECOOKIE); 1252 1.143.2.2 yamt 1253 1.143.2.2 yamt dirgens = malloc(NFS_DIRHASHSIZ * sizeof (unsigned), M_NFSDIROFF, 1254 1.143.2.2 yamt M_WAITOK|M_ZERO); 1255 1.143.2.2 yamt NFSDC_LOCK(np); 1256 1.143.2.2 yamt if (np->n_dirgens == NULL) { 1257 1.143.2.2 yamt np->n_dirgens = dirgens; 1258 1.143.2.2 yamt dirgens = NULL; 1259 1.143.2.2 yamt } 1260 1.143.2.2 yamt NFSDC_UNLOCK(np); 1261 1.143.2.2 yamt if (dirgens) 1262 1.143.2.2 yamt free(dirgens, M_NFSDIROFF); 1263 1.143.2.2 yamt } 1264 1.143.2.2 yamt 1265 1.143.2.2 yamt static const struct nfsdircache dzero; 1266 1.143.2.2 yamt 1267 1.143.2.2 yamt static void nfs_unlinkdircache __P((struct nfsnode *np, struct nfsdircache *)); 1268 1.143.2.2 yamt static void nfs_putdircache_unlocked __P((struct nfsnode *, 1269 1.143.2.2 yamt struct nfsdircache *)); 1270 1.143.2.2 yamt 1271 1.143.2.2 yamt static void 1272 1.143.2.2 yamt nfs_unlinkdircache(np, ndp) 1273 1.143.2.2 yamt struct nfsnode *np; 1274 1.143.2.2 yamt struct nfsdircache *ndp; 1275 1.143.2.2 yamt { 1276 1.143.2.2 yamt 1277 1.143.2.2 yamt NFSDC_ASSERT_LOCKED(np); 1278 1.143.2.2 yamt KASSERT(ndp != &dzero); 1279 1.143.2.2 yamt 1280 1.143.2.2 yamt if (LIST_NEXT(ndp, dc_hash) == (void *)-1) 1281 1.143.2.2 yamt return; 1282 1.143.2.2 yamt 1283 1.143.2.2 yamt TAILQ_REMOVE(&np->n_dirchain, ndp, dc_chain); 1284 1.143.2.2 yamt LIST_REMOVE(ndp, dc_hash); 1285 1.143.2.2 yamt LIST_NEXT(ndp, dc_hash) = (void *)-1; /* mark as unlinked */ 1286 1.143.2.2 yamt 1287 1.143.2.2 yamt nfs_putdircache_unlocked(np, ndp); 1288 1.143.2.2 yamt } 1289 1.143.2.2 yamt 1290 1.143.2.2 yamt void 1291 1.143.2.2 yamt nfs_putdircache(np, ndp) 1292 1.143.2.2 yamt struct nfsnode *np; 1293 1.143.2.2 yamt struct nfsdircache *ndp; 1294 1.143.2.2 yamt { 1295 1.143.2.2 yamt int ref; 1296 1.143.2.2 yamt 1297 1.143.2.2 yamt if (ndp == &dzero) 1298 1.143.2.2 yamt return; 1299 1.143.2.2 yamt 1300 1.143.2.2 yamt KASSERT(ndp->dc_refcnt > 0); 1301 1.143.2.2 yamt NFSDC_LOCK(np); 1302 1.143.2.2 yamt ref = --ndp->dc_refcnt; 1303 1.143.2.2 yamt NFSDC_UNLOCK(np); 1304 1.143.2.2 yamt 1305 1.143.2.2 yamt if (ref == 0) 1306 1.143.2.2 yamt free(ndp, M_NFSDIROFF); 1307 1.143.2.2 yamt } 1308 1.143.2.2 yamt 1309 1.143.2.2 yamt static void 1310 1.143.2.2 yamt nfs_putdircache_unlocked(np, ndp) 1311 1.143.2.2 yamt struct nfsnode *np; 1312 1.143.2.2 yamt struct nfsdircache *ndp; 1313 1.143.2.2 yamt { 1314 1.143.2.2 yamt int ref; 1315 1.143.2.2 yamt 1316 1.143.2.2 yamt NFSDC_ASSERT_LOCKED(np); 1317 1.143.2.2 yamt 1318 1.143.2.2 yamt if (ndp == &dzero) 1319 1.143.2.2 yamt return; 1320 1.143.2.2 yamt 1321 1.143.2.2 yamt KASSERT(ndp->dc_refcnt > 0); 1322 1.143.2.2 yamt ref = --ndp->dc_refcnt; 1323 1.143.2.2 yamt if (ref == 0) 1324 1.143.2.2 yamt free(ndp, M_NFSDIROFF); 1325 1.143.2.2 yamt } 1326 1.143.2.2 yamt 1327 1.143.2.2 yamt struct nfsdircache * 1328 1.143.2.2 yamt nfs_searchdircache(vp, off, do32, hashent) 1329 1.143.2.2 yamt struct vnode *vp; 1330 1.143.2.2 yamt off_t off; 1331 1.143.2.2 yamt int do32; 1332 1.143.2.2 yamt int *hashent; 1333 1.143.2.2 yamt { 1334 1.143.2.2 yamt struct nfsdirhashhead *ndhp; 1335 1.143.2.2 yamt struct nfsdircache *ndp = NULL; 1336 1.143.2.2 yamt struct nfsnode *np = VTONFS(vp); 1337 1.143.2.2 yamt unsigned ent; 1338 1.143.2.2 yamt 1339 1.143.2.2 yamt /* 1340 1.143.2.2 yamt * Zero is always a valid cookie. 1341 1.143.2.2 yamt */ 1342 1.143.2.2 yamt if (off == 0) 1343 1.143.2.2 yamt /* LINTED const cast away */ 1344 1.143.2.2 yamt return (struct nfsdircache *)&dzero; 1345 1.143.2.2 yamt 1346 1.143.2.2 yamt if (!np->n_dircache) 1347 1.143.2.2 yamt return NULL; 1348 1.143.2.2 yamt 1349 1.143.2.2 yamt /* 1350 1.143.2.2 yamt * We use a 32bit cookie as search key, directly reconstruct 1351 1.143.2.2 yamt * the hashentry. Else use the hashfunction. 1352 1.143.2.2 yamt */ 1353 1.143.2.2 yamt if (do32) { 1354 1.143.2.2 yamt ent = (u_int32_t)off >> 24; 1355 1.143.2.2 yamt if (ent >= NFS_DIRHASHSIZ) 1356 1.143.2.2 yamt return NULL; 1357 1.143.2.2 yamt ndhp = &np->n_dircache[ent]; 1358 1.143.2.2 yamt } else { 1359 1.143.2.2 yamt ndhp = NFSDIRHASH(np, off); 1360 1.143.2.2 yamt } 1361 1.143.2.2 yamt 1362 1.143.2.2 yamt if (hashent) 1363 1.143.2.2 yamt *hashent = (int)(ndhp - np->n_dircache); 1364 1.143.2.2 yamt 1365 1.143.2.2 yamt NFSDC_LOCK(np); 1366 1.143.2.2 yamt if (do32) { 1367 1.143.2.2 yamt LIST_FOREACH(ndp, ndhp, dc_hash) { 1368 1.143.2.2 yamt if (ndp->dc_cookie32 == (u_int32_t)off) { 1369 1.143.2.2 yamt /* 1370 1.143.2.2 yamt * An invalidated entry will become the 1371 1.143.2.2 yamt * start of a new block fetched from 1372 1.143.2.2 yamt * the server. 1373 1.143.2.2 yamt */ 1374 1.143.2.2 yamt if (ndp->dc_flags & NFSDC_INVALID) { 1375 1.143.2.2 yamt ndp->dc_blkcookie = ndp->dc_cookie; 1376 1.143.2.2 yamt ndp->dc_entry = 0; 1377 1.143.2.2 yamt ndp->dc_flags &= ~NFSDC_INVALID; 1378 1.143.2.2 yamt } 1379 1.143.2.2 yamt break; 1380 1.143.2.2 yamt } 1381 1.143.2.2 yamt } 1382 1.143.2.2 yamt } else { 1383 1.143.2.2 yamt LIST_FOREACH(ndp, ndhp, dc_hash) { 1384 1.143.2.2 yamt if (ndp->dc_cookie == off) 1385 1.143.2.2 yamt break; 1386 1.143.2.2 yamt } 1387 1.143.2.2 yamt } 1388 1.143.2.2 yamt if (ndp != NULL) 1389 1.143.2.2 yamt ndp->dc_refcnt++; 1390 1.143.2.2 yamt NFSDC_UNLOCK(np); 1391 1.143.2.2 yamt return ndp; 1392 1.143.2.2 yamt } 1393 1.143.2.2 yamt 1394 1.143.2.2 yamt 1395 1.143.2.2 yamt struct nfsdircache * 1396 1.143.2.2 yamt nfs_enterdircache(vp, off, blkoff, en, blkno) 1397 1.143.2.2 yamt struct vnode *vp; 1398 1.143.2.2 yamt off_t off, blkoff; 1399 1.143.2.2 yamt int en; 1400 1.143.2.2 yamt daddr_t blkno; 1401 1.143.2.2 yamt { 1402 1.143.2.2 yamt struct nfsnode *np = VTONFS(vp); 1403 1.143.2.2 yamt struct nfsdirhashhead *ndhp; 1404 1.143.2.2 yamt struct nfsdircache *ndp = NULL; 1405 1.143.2.2 yamt struct nfsdircache *newndp = NULL; 1406 1.143.2.2 yamt struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1407 1.143.2.2 yamt int hashent, gen, overwrite; 1408 1.143.2.2 yamt 1409 1.143.2.2 yamt /* 1410 1.143.2.2 yamt * XXX refuse entries for offset 0. amd(8) erroneously sets 1411 1.143.2.2 yamt * cookie 0 for the '.' entry, making this necessary. This 1412 1.143.2.2 yamt * isn't so bad, as 0 is a special case anyway. 1413 1.143.2.2 yamt */ 1414 1.143.2.2 yamt if (off == 0) 1415 1.143.2.2 yamt /* LINTED const cast away */ 1416 1.143.2.2 yamt return (struct nfsdircache *)&dzero; 1417 1.143.2.2 yamt 1418 1.143.2.2 yamt if (!np->n_dircache) 1419 1.143.2.2 yamt /* 1420 1.143.2.2 yamt * XXX would like to do this in nfs_nget but vtype 1421 1.143.2.2 yamt * isn't known at that time. 1422 1.143.2.2 yamt */ 1423 1.143.2.2 yamt nfs_initdircache(vp); 1424 1.143.2.2 yamt 1425 1.143.2.2 yamt if ((nmp->nm_flag & NFSMNT_XLATECOOKIE) && !np->n_dirgens) 1426 1.143.2.2 yamt nfs_initdirxlatecookie(vp); 1427 1.143.2.2 yamt 1428 1.143.2.2 yamt retry: 1429 1.143.2.2 yamt ndp = nfs_searchdircache(vp, off, 0, &hashent); 1430 1.143.2.2 yamt 1431 1.143.2.2 yamt NFSDC_LOCK(np); 1432 1.143.2.2 yamt if (ndp && (ndp->dc_flags & NFSDC_INVALID) == 0) { 1433 1.143.2.2 yamt /* 1434 1.143.2.2 yamt * Overwriting an old entry. Check if it's the same. 1435 1.143.2.2 yamt * If so, just return. If not, remove the old entry. 1436 1.143.2.2 yamt */ 1437 1.143.2.2 yamt if (ndp->dc_blkcookie == blkoff && ndp->dc_entry == en) 1438 1.143.2.2 yamt goto done; 1439 1.143.2.2 yamt nfs_unlinkdircache(np, ndp); 1440 1.143.2.2 yamt nfs_putdircache_unlocked(np, ndp); 1441 1.143.2.2 yamt ndp = NULL; 1442 1.143.2.2 yamt } 1443 1.143.2.2 yamt 1444 1.143.2.2 yamt ndhp = &np->n_dircache[hashent]; 1445 1.143.2.2 yamt 1446 1.143.2.2 yamt if (!ndp) { 1447 1.143.2.2 yamt if (newndp == NULL) { 1448 1.143.2.2 yamt NFSDC_UNLOCK(np); 1449 1.143.2.2 yamt newndp = malloc(sizeof(*ndp), M_NFSDIROFF, M_WAITOK); 1450 1.143.2.2 yamt newndp->dc_refcnt = 1; 1451 1.143.2.2 yamt LIST_NEXT(newndp, dc_hash) = (void *)-1; 1452 1.143.2.2 yamt goto retry; 1453 1.143.2.2 yamt } 1454 1.143.2.2 yamt ndp = newndp; 1455 1.143.2.2 yamt newndp = NULL; 1456 1.143.2.2 yamt overwrite = 0; 1457 1.143.2.2 yamt if (nmp->nm_flag & NFSMNT_XLATECOOKIE) { 1458 1.143.2.2 yamt /* 1459 1.143.2.2 yamt * We're allocating a new entry, so bump the 1460 1.143.2.2 yamt * generation number. 1461 1.143.2.2 yamt */ 1462 1.143.2.2 yamt gen = ++np->n_dirgens[hashent]; 1463 1.143.2.2 yamt if (gen == 0) { 1464 1.143.2.2 yamt np->n_dirgens[hashent]++; 1465 1.143.2.2 yamt gen++; 1466 1.143.2.2 yamt } 1467 1.143.2.2 yamt ndp->dc_cookie32 = (hashent << 24) | (gen & 0xffffff); 1468 1.143.2.2 yamt } 1469 1.143.2.2 yamt } else 1470 1.143.2.2 yamt overwrite = 1; 1471 1.143.2.2 yamt 1472 1.143.2.2 yamt ndp->dc_cookie = off; 1473 1.143.2.2 yamt ndp->dc_blkcookie = blkoff; 1474 1.143.2.2 yamt ndp->dc_entry = en; 1475 1.143.2.2 yamt ndp->dc_flags = 0; 1476 1.143.2.2 yamt 1477 1.143.2.2 yamt if (overwrite) 1478 1.143.2.2 yamt goto done; 1479 1.143.2.2 yamt 1480 1.143.2.2 yamt /* 1481 1.143.2.2 yamt * If the maximum directory cookie cache size has been reached 1482 1.143.2.2 yamt * for this node, take one off the front. The idea is that 1483 1.143.2.2 yamt * directories are typically read front-to-back once, so that 1484 1.143.2.2 yamt * the oldest entries can be thrown away without much performance 1485 1.143.2.2 yamt * loss. 1486 1.143.2.2 yamt */ 1487 1.143.2.2 yamt if (np->n_dircachesize == NFS_MAXDIRCACHE) { 1488 1.143.2.2 yamt nfs_unlinkdircache(np, TAILQ_FIRST(&np->n_dirchain)); 1489 1.143.2.2 yamt } else 1490 1.143.2.2 yamt np->n_dircachesize++; 1491 1.143.2.2 yamt 1492 1.143.2.2 yamt KASSERT(ndp->dc_refcnt == 1); 1493 1.143.2.2 yamt LIST_INSERT_HEAD(ndhp, ndp, dc_hash); 1494 1.143.2.2 yamt TAILQ_INSERT_TAIL(&np->n_dirchain, ndp, dc_chain); 1495 1.143.2.2 yamt ndp->dc_refcnt++; 1496 1.143.2.2 yamt done: 1497 1.143.2.2 yamt KASSERT(ndp->dc_refcnt > 0); 1498 1.143.2.2 yamt NFSDC_UNLOCK(np); 1499 1.143.2.2 yamt if (newndp) 1500 1.143.2.2 yamt nfs_putdircache(np, newndp); 1501 1.143.2.2 yamt return ndp; 1502 1.143.2.2 yamt } 1503 1.143.2.2 yamt 1504 1.143.2.2 yamt void 1505 1.143.2.2 yamt nfs_invaldircache(vp, flags) 1506 1.143.2.2 yamt struct vnode *vp; 1507 1.143.2.2 yamt int flags; 1508 1.143.2.2 yamt { 1509 1.143.2.2 yamt struct nfsnode *np = VTONFS(vp); 1510 1.143.2.2 yamt struct nfsdircache *ndp = NULL; 1511 1.143.2.2 yamt struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1512 1.143.2.2 yamt const boolean_t forcefree = flags & NFS_INVALDIRCACHE_FORCE; 1513 1.143.2.2 yamt 1514 1.143.2.2 yamt #ifdef DIAGNOSTIC 1515 1.143.2.2 yamt if (vp->v_type != VDIR) 1516 1.143.2.2 yamt panic("nfs: invaldircache: not dir"); 1517 1.143.2.2 yamt #endif 1518 1.143.2.2 yamt 1519 1.143.2.2 yamt if ((flags & NFS_INVALDIRCACHE_KEEPEOF) == 0) 1520 1.143.2.2 yamt np->n_flag &= ~NEOFVALID; 1521 1.143.2.2 yamt 1522 1.143.2.2 yamt if (!np->n_dircache) 1523 1.143.2.2 yamt return; 1524 1.143.2.2 yamt 1525 1.143.2.2 yamt NFSDC_LOCK(np); 1526 1.143.2.2 yamt if (!(nmp->nm_flag & NFSMNT_XLATECOOKIE) || forcefree) { 1527 1.143.2.2 yamt while ((ndp = TAILQ_FIRST(&np->n_dirchain)) != NULL) { 1528 1.143.2.2 yamt KASSERT(!forcefree || ndp->dc_refcnt == 1); 1529 1.143.2.2 yamt nfs_unlinkdircache(np, ndp); 1530 1.143.2.2 yamt } 1531 1.143.2.2 yamt np->n_dircachesize = 0; 1532 1.143.2.2 yamt if (forcefree && np->n_dirgens) { 1533 1.143.2.2 yamt FREE(np->n_dirgens, M_NFSDIROFF); 1534 1.143.2.2 yamt np->n_dirgens = NULL; 1535 1.143.2.2 yamt } 1536 1.143.2.2 yamt } else { 1537 1.143.2.2 yamt TAILQ_FOREACH(ndp, &np->n_dirchain, dc_chain) 1538 1.143.2.2 yamt ndp->dc_flags |= NFSDC_INVALID; 1539 1.143.2.2 yamt } 1540 1.143.2.2 yamt 1541 1.143.2.2 yamt NFSDC_UNLOCK(np); 1542 1.143.2.2 yamt } 1543 1.143.2.2 yamt 1544 1.143.2.2 yamt /* 1545 1.143.2.2 yamt * Called once before VFS init to initialize shared and 1546 1.143.2.2 yamt * server-specific data structures. 1547 1.143.2.2 yamt */ 1548 1.143.2.2 yamt void 1549 1.143.2.2 yamt nfs_init() 1550 1.143.2.2 yamt { 1551 1.143.2.2 yamt nfsrtt.pos = 0; 1552 1.143.2.2 yamt rpc_vers = txdr_unsigned(RPC_VER2); 1553 1.143.2.2 yamt rpc_call = txdr_unsigned(RPC_CALL); 1554 1.143.2.2 yamt rpc_reply = txdr_unsigned(RPC_REPLY); 1555 1.143.2.2 yamt rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 1556 1.143.2.2 yamt rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 1557 1.143.2.2 yamt rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 1558 1.143.2.2 yamt rpc_autherr = txdr_unsigned(RPC_AUTHERR); 1559 1.143.2.2 yamt rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 1560 1.143.2.2 yamt rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 1561 1.143.2.2 yamt nfs_prog = txdr_unsigned(NFS_PROG); 1562 1.143.2.2 yamt nqnfs_prog = txdr_unsigned(NQNFS_PROG); 1563 1.143.2.2 yamt nfs_true = txdr_unsigned(TRUE); 1564 1.143.2.2 yamt nfs_false = txdr_unsigned(FALSE); 1565 1.143.2.2 yamt nfs_xdrneg1 = txdr_unsigned(-1); 1566 1.143.2.2 yamt nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 1567 1.143.2.2 yamt if (nfs_ticks < 1) 1568 1.143.2.2 yamt nfs_ticks = 1; 1569 1.143.2.2 yamt #ifdef NFSSERVER 1570 1.143.2.2 yamt nfsrv_init(0); /* Init server data structures */ 1571 1.143.2.2 yamt nfsrv_initcache(); /* Init the server request cache */ 1572 1.143.2.2 yamt pool_init(&nfs_srvdesc_pool, sizeof(struct nfsrv_descript), 1573 1.143.2.2 yamt 0, 0, 0, "nfsrvdescpl", &pool_allocator_nointr); 1574 1.143.2.2 yamt #endif /* NFSSERVER */ 1575 1.143.2.2 yamt 1576 1.143.2.2 yamt #if defined(NFSSERVER) || !defined(NFS_V2_ONLY) 1577 1.143.2.2 yamt /* 1578 1.143.2.2 yamt * Initialize the nqnfs data structures. 1579 1.143.2.2 yamt */ 1580 1.143.2.2 yamt if (nqnfsstarttime == 0) { 1581 1.143.2.2 yamt nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease 1582 1.143.2.2 yamt + nqsrv_clockskew + nqsrv_writeslack; 1583 1.143.2.2 yamt NQLOADNOVRAM(nqnfsstarttime); 1584 1.143.2.2 yamt CIRCLEQ_INIT(&nqtimerhead); 1585 1.143.2.2 yamt nqfhhashtbl = hashinit(NQLCHSZ, HASH_LIST, M_NQLEASE, 1586 1.143.2.2 yamt M_WAITOK, &nqfhhash); 1587 1.143.2.2 yamt } 1588 1.143.2.2 yamt #endif 1589 1.143.2.2 yamt 1590 1.143.2.2 yamt exithook_establish(nfs_exit, NULL); 1591 1.143.2.2 yamt 1592 1.143.2.2 yamt /* 1593 1.143.2.2 yamt * Initialize reply list and start timer 1594 1.143.2.2 yamt */ 1595 1.143.2.2 yamt TAILQ_INIT(&nfs_reqq); 1596 1.143.2.2 yamt nfs_timer(NULL); 1597 1.143.2.2 yamt MOWNER_ATTACH(&nfs_mowner); 1598 1.143.2.2 yamt 1599 1.143.2.2 yamt #ifdef NFS 1600 1.143.2.2 yamt /* Initialize the kqueue structures */ 1601 1.143.2.2 yamt nfs_kqinit(); 1602 1.143.2.2 yamt /* Initialize the iod structures */ 1603 1.143.2.2 yamt nfs_iodinit(); 1604 1.143.2.2 yamt #endif 1605 1.143.2.2 yamt } 1606 1.143.2.2 yamt 1607 1.143.2.2 yamt #ifdef NFS 1608 1.143.2.2 yamt /* 1609 1.143.2.2 yamt * Called once at VFS init to initialize client-specific data structures. 1610 1.143.2.2 yamt */ 1611 1.143.2.2 yamt void 1612 1.143.2.2 yamt nfs_vfs_init() 1613 1.143.2.2 yamt { 1614 1.143.2.2 yamt nfs_nhinit(); /* Init the nfsnode table */ 1615 1.143.2.2 yamt nfs_commitsize = uvmexp.npages << (PAGE_SHIFT - 4); 1616 1.143.2.2 yamt } 1617 1.143.2.2 yamt 1618 1.143.2.2 yamt void 1619 1.143.2.2 yamt nfs_vfs_reinit() 1620 1.143.2.2 yamt { 1621 1.143.2.2 yamt nfs_nhreinit(); 1622 1.143.2.2 yamt } 1623 1.143.2.2 yamt 1624 1.143.2.2 yamt void 1625 1.143.2.2 yamt nfs_vfs_done() 1626 1.143.2.2 yamt { 1627 1.143.2.2 yamt nfs_nhdone(); 1628 1.143.2.2 yamt } 1629 1.143.2.2 yamt 1630 1.143.2.2 yamt /* 1631 1.143.2.2 yamt * Attribute cache routines. 1632 1.143.2.2 yamt * nfs_loadattrcache() - loads or updates the cache contents from attributes 1633 1.143.2.2 yamt * that are on the mbuf list 1634 1.143.2.2 yamt * nfs_getattrcache() - returns valid attributes if found in cache, returns 1635 1.143.2.2 yamt * error otherwise 1636 1.143.2.2 yamt */ 1637 1.143.2.2 yamt 1638 1.143.2.2 yamt /* 1639 1.143.2.2 yamt * Load the attribute cache (that lives in the nfsnode entry) with 1640 1.143.2.2 yamt * the values on the mbuf list and 1641 1.143.2.2 yamt * Iff vap not NULL 1642 1.143.2.2 yamt * copy the attributes to *vaper 1643 1.143.2.2 yamt */ 1644 1.143.2.2 yamt int 1645 1.143.2.2 yamt nfsm_loadattrcache(vpp, mdp, dposp, vaper, flags) 1646 1.143.2.2 yamt struct vnode **vpp; 1647 1.143.2.2 yamt struct mbuf **mdp; 1648 1.143.2.2 yamt caddr_t *dposp; 1649 1.143.2.2 yamt struct vattr *vaper; 1650 1.143.2.2 yamt int flags; 1651 1.143.2.2 yamt { 1652 1.143.2.2 yamt int32_t t1; 1653 1.143.2.2 yamt caddr_t cp2; 1654 1.143.2.2 yamt int error = 0; 1655 1.143.2.2 yamt struct mbuf *md; 1656 1.143.2.2 yamt int v3 = NFS_ISV3(*vpp); 1657 1.143.2.2 yamt 1658 1.143.2.2 yamt md = *mdp; 1659 1.143.2.2 yamt t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 1660 1.143.2.2 yamt error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2); 1661 1.143.2.2 yamt if (error) 1662 1.143.2.2 yamt return (error); 1663 1.143.2.2 yamt return nfs_loadattrcache(vpp, (struct nfs_fattr *)cp2, vaper, flags); 1664 1.143.2.2 yamt } 1665 1.143.2.2 yamt 1666 1.143.2.2 yamt int 1667 1.143.2.2 yamt nfs_loadattrcache(vpp, fp, vaper, flags) 1668 1.143.2.2 yamt struct vnode **vpp; 1669 1.143.2.2 yamt struct nfs_fattr *fp; 1670 1.143.2.2 yamt struct vattr *vaper; 1671 1.143.2.2 yamt int flags; 1672 1.143.2.2 yamt { 1673 1.143.2.2 yamt struct vnode *vp = *vpp; 1674 1.143.2.2 yamt struct vattr *vap; 1675 1.143.2.2 yamt int v3 = NFS_ISV3(vp); 1676 1.143.2.2 yamt enum vtype vtyp; 1677 1.143.2.2 yamt u_short vmode; 1678 1.143.2.2 yamt struct timespec mtime; 1679 1.143.2.2 yamt struct timespec ctime; 1680 1.143.2.2 yamt struct vnode *nvp; 1681 1.143.2.2 yamt int32_t rdev; 1682 1.143.2.2 yamt struct nfsnode *np; 1683 1.143.2.2 yamt extern int (**spec_nfsv2nodeop_p) __P((void *)); 1684 1.143.2.2 yamt uid_t uid; 1685 1.143.2.2 yamt gid_t gid; 1686 1.143.2.2 yamt 1687 1.143.2.2 yamt if (v3) { 1688 1.143.2.2 yamt vtyp = nfsv3tov_type(fp->fa_type); 1689 1.143.2.2 yamt vmode = fxdr_unsigned(u_short, fp->fa_mode); 1690 1.143.2.2 yamt rdev = makedev(fxdr_unsigned(u_int32_t, fp->fa3_rdev.specdata1), 1691 1.143.2.2 yamt fxdr_unsigned(u_int32_t, fp->fa3_rdev.specdata2)); 1692 1.143.2.2 yamt fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 1693 1.143.2.2 yamt fxdr_nfsv3time(&fp->fa3_ctime, &ctime); 1694 1.143.2.2 yamt } else { 1695 1.143.2.2 yamt vtyp = nfsv2tov_type(fp->fa_type); 1696 1.143.2.2 yamt vmode = fxdr_unsigned(u_short, fp->fa_mode); 1697 1.143.2.2 yamt if (vtyp == VNON || vtyp == VREG) 1698 1.143.2.2 yamt vtyp = IFTOVT(vmode); 1699 1.143.2.2 yamt rdev = fxdr_unsigned(int32_t, fp->fa2_rdev); 1700 1.143.2.2 yamt fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 1701 1.143.2.2 yamt ctime.tv_sec = fxdr_unsigned(u_int32_t, 1702 1.143.2.2 yamt fp->fa2_ctime.nfsv2_sec); 1703 1.143.2.2 yamt ctime.tv_nsec = 0; 1704 1.143.2.2 yamt 1705 1.143.2.2 yamt /* 1706 1.143.2.2 yamt * Really ugly NFSv2 kludge. 1707 1.143.2.2 yamt */ 1708 1.143.2.2 yamt if (vtyp == VCHR && rdev == 0xffffffff) 1709 1.143.2.2 yamt vtyp = VFIFO; 1710 1.143.2.2 yamt } 1711 1.143.2.2 yamt 1712 1.143.2.2 yamt vmode &= ALLPERMS; 1713 1.143.2.2 yamt 1714 1.143.2.2 yamt /* 1715 1.143.2.2 yamt * If v_type == VNON it is a new node, so fill in the v_type, 1716 1.143.2.2 yamt * n_mtime fields. Check to see if it represents a special 1717 1.143.2.2 yamt * device, and if so, check for a possible alias. Once the 1718 1.143.2.2 yamt * correct vnode has been obtained, fill in the rest of the 1719 1.143.2.2 yamt * information. 1720 1.143.2.2 yamt */ 1721 1.143.2.2 yamt np = VTONFS(vp); 1722 1.143.2.2 yamt if (vp->v_type == VNON) { 1723 1.143.2.2 yamt vp->v_type = vtyp; 1724 1.143.2.2 yamt if (vp->v_type == VFIFO) { 1725 1.143.2.2 yamt extern int (**fifo_nfsv2nodeop_p) __P((void *)); 1726 1.143.2.2 yamt vp->v_op = fifo_nfsv2nodeop_p; 1727 1.143.2.2 yamt } else if (vp->v_type == VREG) { 1728 1.143.2.2 yamt lockinit(&np->n_commitlock, PINOD, "nfsclock", 0, 0); 1729 1.143.2.2 yamt } else if (vp->v_type == VCHR || vp->v_type == VBLK) { 1730 1.143.2.2 yamt vp->v_op = spec_nfsv2nodeop_p; 1731 1.143.2.2 yamt nvp = checkalias(vp, (dev_t)rdev, vp->v_mount); 1732 1.143.2.2 yamt if (nvp) { 1733 1.143.2.2 yamt /* 1734 1.143.2.2 yamt * Discard unneeded vnode, but save its nfsnode. 1735 1.143.2.2 yamt * Since the nfsnode does not have a lock, its 1736 1.143.2.2 yamt * vnode lock has to be carried over. 1737 1.143.2.2 yamt */ 1738 1.143.2.2 yamt /* 1739 1.143.2.2 yamt * XXX is the old node sure to be locked here? 1740 1.143.2.2 yamt */ 1741 1.143.2.2 yamt KASSERT(lockstatus(&vp->v_lock) == 1742 1.143.2.2 yamt LK_EXCLUSIVE); 1743 1.143.2.2 yamt nvp->v_data = vp->v_data; 1744 1.143.2.2 yamt vp->v_data = NULL; 1745 1.143.2.2 yamt VOP_UNLOCK(vp, 0); 1746 1.143.2.2 yamt vp->v_op = spec_vnodeop_p; 1747 1.143.2.2 yamt vrele(vp); 1748 1.143.2.2 yamt vgone(vp); 1749 1.143.2.2 yamt lockmgr(&nvp->v_lock, LK_EXCLUSIVE, 1750 1.143.2.2 yamt &nvp->v_interlock); 1751 1.143.2.2 yamt /* 1752 1.143.2.2 yamt * Reinitialize aliased node. 1753 1.143.2.2 yamt */ 1754 1.143.2.2 yamt np->n_vnode = nvp; 1755 1.143.2.2 yamt *vpp = vp = nvp; 1756 1.143.2.2 yamt } 1757 1.143.2.2 yamt } 1758 1.143.2.2 yamt np->n_mtime = mtime; 1759 1.143.2.2 yamt } 1760 1.143.2.2 yamt uid = fxdr_unsigned(uid_t, fp->fa_uid); 1761 1.143.2.2 yamt gid = fxdr_unsigned(gid_t, fp->fa_gid); 1762 1.143.2.2 yamt vap = np->n_vattr; 1763 1.143.2.2 yamt 1764 1.143.2.2 yamt /* 1765 1.143.2.2 yamt * Invalidate access cache if uid, gid, mode or ctime changed. 1766 1.143.2.2 yamt */ 1767 1.143.2.2 yamt if (np->n_accstamp != -1 && 1768 1.143.2.2 yamt (gid != vap->va_gid || uid != vap->va_uid || vmode != vap->va_mode 1769 1.143.2.2 yamt || timespeccmp(&ctime, &vap->va_ctime, !=))) 1770 1.143.2.2 yamt np->n_accstamp = -1; 1771 1.143.2.2 yamt 1772 1.143.2.2 yamt vap->va_type = vtyp; 1773 1.143.2.2 yamt vap->va_mode = vmode; 1774 1.143.2.2 yamt vap->va_rdev = (dev_t)rdev; 1775 1.143.2.2 yamt vap->va_mtime = mtime; 1776 1.143.2.2 yamt vap->va_ctime = ctime; 1777 1.143.2.2 yamt vap->va_fsid = vp->v_mount->mnt_stat.f_fsidx.__fsid_val[0]; 1778 1.143.2.2 yamt switch (vtyp) { 1779 1.143.2.2 yamt case VDIR: 1780 1.143.2.2 yamt vap->va_blocksize = NFS_DIRFRAGSIZ; 1781 1.143.2.2 yamt break; 1782 1.143.2.2 yamt case VBLK: 1783 1.143.2.2 yamt vap->va_blocksize = BLKDEV_IOSIZE; 1784 1.143.2.2 yamt break; 1785 1.143.2.2 yamt case VCHR: 1786 1.143.2.2 yamt vap->va_blocksize = MAXBSIZE; 1787 1.143.2.2 yamt break; 1788 1.143.2.2 yamt default: 1789 1.143.2.2 yamt vap->va_blocksize = v3 ? vp->v_mount->mnt_stat.f_iosize : 1790 1.143.2.2 yamt fxdr_unsigned(int32_t, fp->fa2_blocksize); 1791 1.143.2.2 yamt break; 1792 1.143.2.2 yamt } 1793 1.143.2.2 yamt if (v3) { 1794 1.143.2.2 yamt vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1795 1.143.2.2 yamt vap->va_uid = uid; 1796 1.143.2.2 yamt vap->va_gid = gid; 1797 1.143.2.2 yamt vap->va_size = fxdr_hyper(&fp->fa3_size); 1798 1.143.2.2 yamt vap->va_bytes = fxdr_hyper(&fp->fa3_used); 1799 1.143.2.2 yamt vap->va_fileid = fxdr_unsigned(int32_t, 1800 1.143.2.2 yamt fp->fa3_fileid.nfsuquad[1]); 1801 1.143.2.2 yamt fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 1802 1.143.2.2 yamt vap->va_flags = 0; 1803 1.143.2.2 yamt vap->va_filerev = 0; 1804 1.143.2.2 yamt } else { 1805 1.143.2.2 yamt vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1806 1.143.2.2 yamt vap->va_uid = uid; 1807 1.143.2.2 yamt vap->va_gid = gid; 1808 1.143.2.2 yamt vap->va_size = fxdr_unsigned(u_int32_t, fp->fa2_size); 1809 1.143.2.2 yamt vap->va_bytes = fxdr_unsigned(int32_t, fp->fa2_blocks) 1810 1.143.2.2 yamt * NFS_FABLKSIZE; 1811 1.143.2.2 yamt vap->va_fileid = fxdr_unsigned(int32_t, fp->fa2_fileid); 1812 1.143.2.2 yamt fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 1813 1.143.2.2 yamt vap->va_flags = 0; 1814 1.143.2.2 yamt vap->va_gen = fxdr_unsigned(u_int32_t,fp->fa2_ctime.nfsv2_usec); 1815 1.143.2.2 yamt vap->va_filerev = 0; 1816 1.143.2.2 yamt } 1817 1.143.2.2 yamt if (vap->va_size != np->n_size) { 1818 1.143.2.2 yamt if ((np->n_flag & NMODIFIED) && vap->va_size < np->n_size) { 1819 1.143.2.2 yamt vap->va_size = np->n_size; 1820 1.143.2.2 yamt } else { 1821 1.143.2.2 yamt np->n_size = vap->va_size; 1822 1.143.2.2 yamt if (vap->va_type == VREG) { 1823 1.143.2.2 yamt /* 1824 1.143.2.2 yamt * we can't free pages if NAC_NOTRUNC because 1825 1.143.2.2 yamt * the pages can be owned by ourselves. 1826 1.143.2.2 yamt */ 1827 1.143.2.2 yamt if (flags & NAC_NOTRUNC) { 1828 1.143.2.2 yamt np->n_flag |= NTRUNCDELAYED; 1829 1.143.2.2 yamt } else { 1830 1.143.2.2 yamt simple_lock(&vp->v_interlock); 1831 1.143.2.2 yamt (void)VOP_PUTPAGES(vp, 0, 1832 1.143.2.2 yamt 0, PGO_SYNCIO | PGO_CLEANIT | 1833 1.143.2.2 yamt PGO_FREE | PGO_ALLPAGES); 1834 1.143.2.2 yamt uvm_vnp_setsize(vp, np->n_size); 1835 1.143.2.2 yamt } 1836 1.143.2.2 yamt } 1837 1.143.2.2 yamt } 1838 1.143.2.2 yamt } 1839 1.143.2.2 yamt np->n_attrstamp = mono_time.tv_sec; 1840 1.143.2.2 yamt if (vaper != NULL) { 1841 1.143.2.2 yamt memcpy((caddr_t)vaper, (caddr_t)vap, sizeof(*vap)); 1842 1.143.2.2 yamt if (np->n_flag & NCHG) { 1843 1.143.2.2 yamt if (np->n_flag & NACC) 1844 1.143.2.2 yamt vaper->va_atime = np->n_atim; 1845 1.143.2.2 yamt if (np->n_flag & NUPD) 1846 1.143.2.2 yamt vaper->va_mtime = np->n_mtim; 1847 1.143.2.2 yamt } 1848 1.143.2.2 yamt } 1849 1.143.2.2 yamt return (0); 1850 1.143.2.2 yamt } 1851 1.143.2.2 yamt 1852 1.143.2.2 yamt /* 1853 1.143.2.2 yamt * Check the time stamp 1854 1.143.2.2 yamt * If the cache is valid, copy contents to *vap and return 0 1855 1.143.2.2 yamt * otherwise return an error 1856 1.143.2.2 yamt */ 1857 1.143.2.2 yamt int 1858 1.143.2.2 yamt nfs_getattrcache(vp, vaper) 1859 1.143.2.2 yamt struct vnode *vp; 1860 1.143.2.2 yamt struct vattr *vaper; 1861 1.143.2.2 yamt { 1862 1.143.2.2 yamt struct nfsnode *np = VTONFS(vp); 1863 1.143.2.2 yamt struct vattr *vap; 1864 1.143.2.2 yamt 1865 1.143.2.2 yamt if (np->n_attrstamp == 0 || 1866 1.143.2.2 yamt (mono_time.tv_sec - np->n_attrstamp) >= NFS_ATTRTIMEO(np)) { 1867 1.143.2.2 yamt nfsstats.attrcache_misses++; 1868 1.143.2.2 yamt return (ENOENT); 1869 1.143.2.2 yamt } 1870 1.143.2.2 yamt nfsstats.attrcache_hits++; 1871 1.143.2.2 yamt vap = np->n_vattr; 1872 1.143.2.2 yamt if (vap->va_size != np->n_size) { 1873 1.143.2.2 yamt if (vap->va_type == VREG) { 1874 1.143.2.2 yamt if (np->n_flag & NMODIFIED) { 1875 1.143.2.2 yamt if (vap->va_size < np->n_size) 1876 1.143.2.2 yamt vap->va_size = np->n_size; 1877 1.143.2.2 yamt else 1878 1.143.2.2 yamt np->n_size = vap->va_size; 1879 1.143.2.2 yamt } else 1880 1.143.2.2 yamt np->n_size = vap->va_size; 1881 1.143.2.2 yamt uvm_vnp_setsize(vp, np->n_size); 1882 1.143.2.2 yamt } else 1883 1.143.2.2 yamt np->n_size = vap->va_size; 1884 1.143.2.2 yamt } 1885 1.143.2.2 yamt memcpy((caddr_t)vaper, (caddr_t)vap, sizeof(struct vattr)); 1886 1.143.2.2 yamt if (np->n_flag & NCHG) { 1887 1.143.2.2 yamt if (np->n_flag & NACC) 1888 1.143.2.2 yamt vaper->va_atime = np->n_atim; 1889 1.143.2.2 yamt if (np->n_flag & NUPD) 1890 1.143.2.2 yamt vaper->va_mtime = np->n_mtim; 1891 1.143.2.2 yamt } 1892 1.143.2.2 yamt return (0); 1893 1.143.2.2 yamt } 1894 1.143.2.2 yamt 1895 1.143.2.2 yamt void 1896 1.143.2.2 yamt nfs_delayedtruncate(vp) 1897 1.143.2.2 yamt struct vnode *vp; 1898 1.143.2.2 yamt { 1899 1.143.2.2 yamt struct nfsnode *np = VTONFS(vp); 1900 1.143.2.2 yamt 1901 1.143.2.2 yamt if (np->n_flag & NTRUNCDELAYED) { 1902 1.143.2.2 yamt np->n_flag &= ~NTRUNCDELAYED; 1903 1.143.2.2 yamt simple_lock(&vp->v_interlock); 1904 1.143.2.2 yamt (void)VOP_PUTPAGES(vp, 0, 1905 1.143.2.2 yamt 0, PGO_SYNCIO | PGO_CLEANIT | PGO_FREE | PGO_ALLPAGES); 1906 1.143.2.2 yamt uvm_vnp_setsize(vp, np->n_size); 1907 1.143.2.2 yamt } 1908 1.143.2.2 yamt } 1909 1.143.2.2 yamt 1910 1.143.2.2 yamt #define NFS_WCCKLUDGE_TIMEOUT (24 * 60 * 60) /* 1 day */ 1911 1.143.2.2 yamt #define NFS_WCCKLUDGE(nmp, now) \ 1912 1.143.2.2 yamt (((nmp)->nm_iflag & NFSMNT_WCCKLUDGE) && \ 1913 1.143.2.2 yamt ((now) - (nmp)->nm_wcckludgetime - NFS_WCCKLUDGE_TIMEOUT) < 0) 1914 1.143.2.2 yamt 1915 1.143.2.2 yamt /* 1916 1.143.2.2 yamt * nfs_check_wccdata: check inaccurate wcc_data 1917 1.143.2.2 yamt * 1918 1.143.2.2 yamt * => return non-zero if we shouldn't trust the wcc_data. 1919 1.143.2.2 yamt * => NFS_WCCKLUDGE_TIMEOUT is for the case that the server is "fixed". 1920 1.143.2.2 yamt */ 1921 1.143.2.2 yamt 1922 1.143.2.2 yamt int 1923 1.143.2.2 yamt nfs_check_wccdata(struct nfsnode *np, const struct timespec *ctime, 1924 1.143.2.2 yamt struct timespec *mtime, boolean_t docheck) 1925 1.143.2.2 yamt { 1926 1.143.2.2 yamt int error = 0; 1927 1.143.2.2 yamt 1928 1.143.2.2 yamt #if !defined(NFS_V2_ONLY) 1929 1.143.2.2 yamt 1930 1.143.2.2 yamt if (docheck) { 1931 1.143.2.2 yamt struct vnode *vp = NFSTOV(np); 1932 1.143.2.2 yamt struct nfsmount *nmp; 1933 1.143.2.2 yamt long now = mono_time.tv_sec; 1934 1.143.2.2 yamt #if defined(DEBUG) 1935 1.143.2.2 yamt const char *reason = NULL; /* XXX: gcc */ 1936 1.143.2.2 yamt #endif 1937 1.143.2.2 yamt 1938 1.143.2.2 yamt if (timespeccmp(&np->n_vattr->va_mtime, mtime, <=)) { 1939 1.143.2.2 yamt #if defined(DEBUG) 1940 1.143.2.2 yamt reason = "mtime"; 1941 1.143.2.2 yamt #endif 1942 1.143.2.2 yamt error = EINVAL; 1943 1.143.2.2 yamt } 1944 1.143.2.2 yamt 1945 1.143.2.2 yamt if (vp->v_type == VDIR && 1946 1.143.2.2 yamt timespeccmp(&np->n_vattr->va_ctime, ctime, <=)) { 1947 1.143.2.2 yamt #if defined(DEBUG) 1948 1.143.2.2 yamt reason = "ctime"; 1949 1.143.2.2 yamt #endif 1950 1.143.2.2 yamt error = EINVAL; 1951 1.143.2.2 yamt } 1952 1.143.2.2 yamt 1953 1.143.2.2 yamt nmp = VFSTONFS(vp->v_mount); 1954 1.143.2.2 yamt if (error) { 1955 1.143.2.2 yamt 1956 1.143.2.2 yamt /* 1957 1.143.2.2 yamt * despite of the fact that we've updated the file, 1958 1.143.2.2 yamt * timestamps of the file were not updated as we 1959 1.143.2.2 yamt * expected. 1960 1.143.2.2 yamt * it means that the server has incompatible 1961 1.143.2.2 yamt * semantics of timestamps or (more likely) 1962 1.143.2.2 yamt * the server time is not precise enough to 1963 1.143.2.2 yamt * track each modifications. 1964 1.143.2.2 yamt * in that case, we disable wcc processing. 1965 1.143.2.2 yamt * 1966 1.143.2.2 yamt * yes, strictly speaking, we should disable all 1967 1.143.2.2 yamt * caching. it's a compromise. 1968 1.143.2.2 yamt */ 1969 1.143.2.2 yamt 1970 1.143.2.2 yamt simple_lock(&nmp->nm_slock); 1971 1.143.2.2 yamt #if defined(DEBUG) 1972 1.143.2.2 yamt if (!NFS_WCCKLUDGE(nmp, now)) { 1973 1.143.2.2 yamt printf("%s: inaccurate wcc data (%s) detected," 1974 1.143.2.2 yamt " disabling wcc\n", 1975 1.143.2.2 yamt vp->v_mount->mnt_stat.f_mntfromname, 1976 1.143.2.2 yamt reason); 1977 1.143.2.2 yamt } 1978 1.143.2.2 yamt #endif 1979 1.143.2.2 yamt nmp->nm_iflag |= NFSMNT_WCCKLUDGE; 1980 1.143.2.2 yamt nmp->nm_wcckludgetime = now; 1981 1.143.2.2 yamt simple_unlock(&nmp->nm_slock); 1982 1.143.2.2 yamt } else if (NFS_WCCKLUDGE(nmp, now)) { 1983 1.143.2.2 yamt error = EPERM; /* XXX */ 1984 1.143.2.2 yamt } else if (nmp->nm_iflag & NFSMNT_WCCKLUDGE) { 1985 1.143.2.2 yamt simple_lock(&nmp->nm_slock); 1986 1.143.2.2 yamt if (nmp->nm_iflag & NFSMNT_WCCKLUDGE) { 1987 1.143.2.2 yamt #if defined(DEBUG) 1988 1.143.2.2 yamt printf("%s: re-enabling wcc\n", 1989 1.143.2.2 yamt vp->v_mount->mnt_stat.f_mntfromname); 1990 1.143.2.2 yamt #endif 1991 1.143.2.2 yamt nmp->nm_iflag &= ~NFSMNT_WCCKLUDGE; 1992 1.143.2.2 yamt } 1993 1.143.2.2 yamt simple_unlock(&nmp->nm_slock); 1994 1.143.2.2 yamt } 1995 1.143.2.2 yamt } 1996 1.143.2.2 yamt 1997 1.143.2.2 yamt #endif /* !defined(NFS_V2_ONLY) */ 1998 1.143.2.2 yamt 1999 1.143.2.2 yamt return error; 2000 1.143.2.2 yamt } 2001 1.143.2.2 yamt 2002 1.143.2.2 yamt /* 2003 1.143.2.2 yamt * Heuristic to see if the server XDR encodes directory cookies or not. 2004 1.143.2.2 yamt * it is not supposed to, but a lot of servers may do this. Also, since 2005 1.143.2.2 yamt * most/all servers will implement V2 as well, it is expected that they 2006 1.143.2.2 yamt * may return just 32 bits worth of cookie information, so we need to 2007 1.143.2.2 yamt * find out in which 32 bits this information is available. We do this 2008 1.143.2.2 yamt * to avoid trouble with emulated binaries that can't handle 64 bit 2009 1.143.2.2 yamt * directory offsets. 2010 1.143.2.2 yamt */ 2011 1.143.2.2 yamt 2012 1.143.2.2 yamt void 2013 1.143.2.2 yamt nfs_cookieheuristic(vp, flagp, p, cred) 2014 1.143.2.2 yamt struct vnode *vp; 2015 1.143.2.2 yamt int *flagp; 2016 1.143.2.2 yamt struct proc *p; 2017 1.143.2.2 yamt struct ucred *cred; 2018 1.143.2.2 yamt { 2019 1.143.2.2 yamt struct uio auio; 2020 1.143.2.2 yamt struct iovec aiov; 2021 1.143.2.2 yamt caddr_t buf, cp; 2022 1.143.2.2 yamt struct dirent *dp; 2023 1.143.2.2 yamt off_t *cookies = NULL, *cop; 2024 1.143.2.2 yamt int error, eof, nc, len; 2025 1.143.2.2 yamt 2026 1.143.2.2 yamt MALLOC(buf, caddr_t, NFS_DIRFRAGSIZ, M_TEMP, M_WAITOK); 2027 1.143.2.2 yamt 2028 1.143.2.2 yamt aiov.iov_base = buf; 2029 1.143.2.2 yamt aiov.iov_len = NFS_DIRFRAGSIZ; 2030 1.143.2.2 yamt auio.uio_iov = &aiov; 2031 1.143.2.2 yamt auio.uio_iovcnt = 1; 2032 1.143.2.2 yamt auio.uio_rw = UIO_READ; 2033 1.143.2.2 yamt auio.uio_segflg = UIO_SYSSPACE; 2034 1.143.2.2 yamt auio.uio_procp = NULL; 2035 1.143.2.2 yamt auio.uio_resid = NFS_DIRFRAGSIZ; 2036 1.143.2.2 yamt auio.uio_offset = 0; 2037 1.143.2.2 yamt 2038 1.143.2.2 yamt error = VOP_READDIR(vp, &auio, cred, &eof, &cookies, &nc); 2039 1.143.2.2 yamt 2040 1.143.2.2 yamt len = NFS_DIRFRAGSIZ - auio.uio_resid; 2041 1.143.2.2 yamt if (error || len == 0) { 2042 1.143.2.2 yamt FREE(buf, M_TEMP); 2043 1.143.2.2 yamt if (cookies) 2044 1.143.2.2 yamt free(cookies, M_TEMP); 2045 1.143.2.2 yamt return; 2046 1.143.2.2 yamt } 2047 1.143.2.2 yamt 2048 1.143.2.2 yamt /* 2049 1.143.2.2 yamt * Find the first valid entry and look at its offset cookie. 2050 1.143.2.2 yamt */ 2051 1.143.2.2 yamt 2052 1.143.2.2 yamt cp = buf; 2053 1.143.2.2 yamt for (cop = cookies; len > 0; len -= dp->d_reclen) { 2054 1.143.2.2 yamt dp = (struct dirent *)cp; 2055 1.143.2.2 yamt if (dp->d_fileno != 0 && len >= dp->d_reclen) { 2056 1.143.2.2 yamt if ((*cop >> 32) != 0 && (*cop & 0xffffffffLL) == 0) { 2057 1.143.2.2 yamt *flagp |= NFSMNT_SWAPCOOKIE; 2058 1.143.2.2 yamt nfs_invaldircache(vp, 0); 2059 1.143.2.2 yamt nfs_vinvalbuf(vp, 0, cred, p, 1); 2060 1.143.2.2 yamt } 2061 1.143.2.2 yamt break; 2062 1.143.2.2 yamt } 2063 1.143.2.2 yamt cop++; 2064 1.143.2.2 yamt cp += dp->d_reclen; 2065 1.143.2.2 yamt } 2066 1.143.2.2 yamt 2067 1.143.2.2 yamt FREE(buf, M_TEMP); 2068 1.143.2.2 yamt free(cookies, M_TEMP); 2069 1.143.2.2 yamt } 2070 1.143.2.2 yamt #endif /* NFS */ 2071 1.143.2.2 yamt 2072 1.143.2.2 yamt /* 2073 1.143.2.2 yamt * Set up nameidata for a lookup() call and do it. 2074 1.143.2.2 yamt * 2075 1.143.2.2 yamt * If pubflag is set, this call is done for a lookup operation on the 2076 1.143.2.2 yamt * public filehandle. In that case we allow crossing mountpoints and 2077 1.143.2.2 yamt * absolute pathnames. However, the caller is expected to check that 2078 1.143.2.2 yamt * the lookup result is within the public fs, and deny access if 2079 1.143.2.2 yamt * it is not. 2080 1.143.2.2 yamt */ 2081 1.143.2.2 yamt int 2082 1.143.2.2 yamt nfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag, pubflag) 2083 1.143.2.2 yamt struct nameidata *ndp; 2084 1.143.2.2 yamt fhandle_t *fhp; 2085 1.143.2.2 yamt uint32_t len; 2086 1.143.2.2 yamt struct nfssvc_sock *slp; 2087 1.143.2.2 yamt struct mbuf *nam; 2088 1.143.2.2 yamt struct mbuf **mdp; 2089 1.143.2.2 yamt caddr_t *dposp; 2090 1.143.2.2 yamt struct vnode **retdirp; 2091 1.143.2.2 yamt struct proc *p; 2092 1.143.2.2 yamt int kerbflag, pubflag; 2093 1.143.2.2 yamt { 2094 1.143.2.2 yamt int i, rem; 2095 1.143.2.2 yamt struct mbuf *md; 2096 1.143.2.2 yamt char *fromcp, *tocp, *cp; 2097 1.143.2.2 yamt struct iovec aiov; 2098 1.143.2.2 yamt struct uio auio; 2099 1.143.2.2 yamt struct vnode *dp; 2100 1.143.2.2 yamt int error, rdonly, linklen; 2101 1.143.2.2 yamt struct componentname *cnp = &ndp->ni_cnd; 2102 1.143.2.2 yamt 2103 1.143.2.2 yamt *retdirp = (struct vnode *)0; 2104 1.143.2.2 yamt 2105 1.143.2.2 yamt if ((len + 1) > MAXPATHLEN) 2106 1.143.2.2 yamt return (ENAMETOOLONG); 2107 1.143.2.2 yamt if (len == 0) 2108 1.143.2.2 yamt return (EACCES); 2109 1.143.2.2 yamt cnp->cn_pnbuf = PNBUF_GET(); 2110 1.143.2.2 yamt 2111 1.143.2.2 yamt /* 2112 1.143.2.2 yamt * Copy the name from the mbuf list to ndp->ni_pnbuf 2113 1.143.2.2 yamt * and set the various ndp fields appropriately. 2114 1.143.2.2 yamt */ 2115 1.143.2.2 yamt fromcp = *dposp; 2116 1.143.2.2 yamt tocp = cnp->cn_pnbuf; 2117 1.143.2.2 yamt md = *mdp; 2118 1.143.2.2 yamt rem = mtod(md, caddr_t) + md->m_len - fromcp; 2119 1.143.2.2 yamt for (i = 0; i < len; i++) { 2120 1.143.2.2 yamt while (rem == 0) { 2121 1.143.2.2 yamt md = md->m_next; 2122 1.143.2.2 yamt if (md == NULL) { 2123 1.143.2.2 yamt error = EBADRPC; 2124 1.143.2.2 yamt goto out; 2125 1.143.2.2 yamt } 2126 1.143.2.2 yamt fromcp = mtod(md, caddr_t); 2127 1.143.2.2 yamt rem = md->m_len; 2128 1.143.2.2 yamt } 2129 1.143.2.2 yamt if (*fromcp == '\0' || (!pubflag && *fromcp == '/')) { 2130 1.143.2.2 yamt error = EACCES; 2131 1.143.2.2 yamt goto out; 2132 1.143.2.2 yamt } 2133 1.143.2.2 yamt *tocp++ = *fromcp++; 2134 1.143.2.2 yamt rem--; 2135 1.143.2.2 yamt } 2136 1.143.2.2 yamt *tocp = '\0'; 2137 1.143.2.2 yamt *mdp = md; 2138 1.143.2.2 yamt *dposp = fromcp; 2139 1.143.2.2 yamt len = nfsm_rndup(len)-len; 2140 1.143.2.2 yamt if (len > 0) { 2141 1.143.2.2 yamt if (rem >= len) 2142 1.143.2.2 yamt *dposp += len; 2143 1.143.2.2 yamt else if ((error = nfs_adv(mdp, dposp, len, rem)) != 0) 2144 1.143.2.2 yamt goto out; 2145 1.143.2.2 yamt } 2146 1.143.2.2 yamt 2147 1.143.2.2 yamt /* 2148 1.143.2.2 yamt * Extract and set starting directory. 2149 1.143.2.2 yamt */ 2150 1.143.2.2 yamt error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp, 2151 1.143.2.2 yamt nam, &rdonly, kerbflag, pubflag); 2152 1.143.2.2 yamt if (error) 2153 1.143.2.2 yamt goto out; 2154 1.143.2.2 yamt if (dp->v_type != VDIR) { 2155 1.143.2.2 yamt vrele(dp); 2156 1.143.2.2 yamt error = ENOTDIR; 2157 1.143.2.2 yamt goto out; 2158 1.143.2.2 yamt } 2159 1.143.2.2 yamt 2160 1.143.2.2 yamt if (rdonly) 2161 1.143.2.2 yamt cnp->cn_flags |= RDONLY; 2162 1.143.2.2 yamt 2163 1.143.2.2 yamt *retdirp = dp; 2164 1.143.2.2 yamt 2165 1.143.2.2 yamt if (pubflag) { 2166 1.143.2.2 yamt /* 2167 1.143.2.2 yamt * Oh joy. For WebNFS, handle those pesky '%' escapes, 2168 1.143.2.2 yamt * and the 'native path' indicator. 2169 1.143.2.2 yamt */ 2170 1.143.2.2 yamt cp = PNBUF_GET(); 2171 1.143.2.2 yamt fromcp = cnp->cn_pnbuf; 2172 1.143.2.2 yamt tocp = cp; 2173 1.143.2.2 yamt if ((unsigned char)*fromcp >= WEBNFS_SPECCHAR_START) { 2174 1.143.2.2 yamt switch ((unsigned char)*fromcp) { 2175 1.143.2.2 yamt case WEBNFS_NATIVE_CHAR: 2176 1.143.2.2 yamt /* 2177 1.143.2.2 yamt * 'Native' path for us is the same 2178 1.143.2.2 yamt * as a path according to the NFS spec, 2179 1.143.2.2 yamt * just skip the escape char. 2180 1.143.2.2 yamt */ 2181 1.143.2.2 yamt fromcp++; 2182 1.143.2.2 yamt break; 2183 1.143.2.2 yamt /* 2184 1.143.2.2 yamt * More may be added in the future, range 0x80-0xff 2185 1.143.2.2 yamt */ 2186 1.143.2.2 yamt default: 2187 1.143.2.2 yamt error = EIO; 2188 1.143.2.2 yamt PNBUF_PUT(cp); 2189 1.143.2.2 yamt goto out; 2190 1.143.2.2 yamt } 2191 1.143.2.2 yamt } 2192 1.143.2.2 yamt /* 2193 1.143.2.2 yamt * Translate the '%' escapes, URL-style. 2194 1.143.2.2 yamt */ 2195 1.143.2.2 yamt while (*fromcp != '\0') { 2196 1.143.2.2 yamt if (*fromcp == WEBNFS_ESC_CHAR) { 2197 1.143.2.2 yamt if (fromcp[1] != '\0' && fromcp[2] != '\0') { 2198 1.143.2.2 yamt fromcp++; 2199 1.143.2.2 yamt *tocp++ = HEXSTRTOI(fromcp); 2200 1.143.2.2 yamt fromcp += 2; 2201 1.143.2.2 yamt continue; 2202 1.143.2.2 yamt } else { 2203 1.143.2.2 yamt error = ENOENT; 2204 1.143.2.2 yamt PNBUF_PUT(cp); 2205 1.143.2.2 yamt goto out; 2206 1.143.2.2 yamt } 2207 1.143.2.2 yamt } else 2208 1.143.2.2 yamt *tocp++ = *fromcp++; 2209 1.143.2.2 yamt } 2210 1.143.2.2 yamt *tocp = '\0'; 2211 1.143.2.2 yamt PNBUF_PUT(cnp->cn_pnbuf); 2212 1.143.2.2 yamt cnp->cn_pnbuf = cp; 2213 1.143.2.2 yamt } 2214 1.143.2.2 yamt 2215 1.143.2.2 yamt ndp->ni_pathlen = (tocp - cnp->cn_pnbuf) + 1; 2216 1.143.2.2 yamt ndp->ni_segflg = UIO_SYSSPACE; 2217 1.143.2.2 yamt ndp->ni_rootdir = rootvnode; 2218 1.143.2.2 yamt 2219 1.143.2.2 yamt if (pubflag) { 2220 1.143.2.2 yamt ndp->ni_loopcnt = 0; 2221 1.143.2.2 yamt if (cnp->cn_pnbuf[0] == '/') 2222 1.143.2.2 yamt dp = rootvnode; 2223 1.143.2.2 yamt } else { 2224 1.143.2.2 yamt cnp->cn_flags |= NOCROSSMOUNT; 2225 1.143.2.2 yamt } 2226 1.143.2.2 yamt 2227 1.143.2.2 yamt cnp->cn_proc = p; 2228 1.143.2.2 yamt VREF(dp); 2229 1.143.2.2 yamt 2230 1.143.2.2 yamt for (;;) { 2231 1.143.2.2 yamt cnp->cn_nameptr = cnp->cn_pnbuf; 2232 1.143.2.2 yamt ndp->ni_startdir = dp; 2233 1.143.2.2 yamt /* 2234 1.143.2.2 yamt * And call lookup() to do the real work 2235 1.143.2.2 yamt */ 2236 1.143.2.2 yamt error = lookup(ndp); 2237 1.143.2.2 yamt if (error) { 2238 1.143.2.2 yamt PNBUF_PUT(cnp->cn_pnbuf); 2239 1.143.2.2 yamt return (error); 2240 1.143.2.2 yamt } 2241 1.143.2.2 yamt /* 2242 1.143.2.2 yamt * Check for encountering a symbolic link 2243 1.143.2.2 yamt */ 2244 1.143.2.2 yamt if ((cnp->cn_flags & ISSYMLINK) == 0) { 2245 1.143.2.2 yamt if (cnp->cn_flags & (SAVENAME | SAVESTART)) 2246 1.143.2.2 yamt cnp->cn_flags |= HASBUF; 2247 1.143.2.2 yamt else 2248 1.143.2.2 yamt PNBUF_PUT(cnp->cn_pnbuf); 2249 1.143.2.2 yamt return (0); 2250 1.143.2.2 yamt } else { 2251 1.143.2.2 yamt if ((cnp->cn_flags & LOCKPARENT) && (cnp->cn_flags & ISLASTCN)) 2252 1.143.2.2 yamt VOP_UNLOCK(ndp->ni_dvp, 0); 2253 1.143.2.2 yamt if (!pubflag) { 2254 1.143.2.2 yamt error = EINVAL; 2255 1.143.2.2 yamt break; 2256 1.143.2.2 yamt } 2257 1.143.2.2 yamt 2258 1.143.2.2 yamt if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 2259 1.143.2.2 yamt error = ELOOP; 2260 1.143.2.2 yamt break; 2261 1.143.2.2 yamt } 2262 1.143.2.2 yamt if (ndp->ni_vp->v_mount->mnt_flag & MNT_SYMPERM) { 2263 1.143.2.2 yamt error = VOP_ACCESS(ndp->ni_vp, VEXEC, cnp->cn_cred, 2264 1.143.2.2 yamt cnp->cn_proc); 2265 1.143.2.2 yamt if (error != 0) 2266 1.143.2.2 yamt break; 2267 1.143.2.2 yamt } 2268 1.143.2.2 yamt if (ndp->ni_pathlen > 1) 2269 1.143.2.2 yamt cp = PNBUF_GET(); 2270 1.143.2.2 yamt else 2271 1.143.2.2 yamt cp = cnp->cn_pnbuf; 2272 1.143.2.2 yamt aiov.iov_base = cp; 2273 1.143.2.2 yamt aiov.iov_len = MAXPATHLEN; 2274 1.143.2.2 yamt auio.uio_iov = &aiov; 2275 1.143.2.2 yamt auio.uio_iovcnt = 1; 2276 1.143.2.2 yamt auio.uio_offset = 0; 2277 1.143.2.2 yamt auio.uio_rw = UIO_READ; 2278 1.143.2.2 yamt auio.uio_segflg = UIO_SYSSPACE; 2279 1.143.2.2 yamt auio.uio_procp = NULL; 2280 1.143.2.2 yamt auio.uio_resid = MAXPATHLEN; 2281 1.143.2.2 yamt error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 2282 1.143.2.2 yamt if (error) { 2283 1.143.2.2 yamt badlink: 2284 1.143.2.2 yamt if (ndp->ni_pathlen > 1) 2285 1.143.2.2 yamt PNBUF_PUT(cp); 2286 1.143.2.2 yamt break; 2287 1.143.2.2 yamt } 2288 1.143.2.2 yamt linklen = MAXPATHLEN - auio.uio_resid; 2289 1.143.2.2 yamt if (linklen == 0) { 2290 1.143.2.2 yamt error = ENOENT; 2291 1.143.2.2 yamt goto badlink; 2292 1.143.2.2 yamt } 2293 1.143.2.2 yamt if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 2294 1.143.2.2 yamt error = ENAMETOOLONG; 2295 1.143.2.2 yamt goto badlink; 2296 1.143.2.2 yamt } 2297 1.143.2.2 yamt if (ndp->ni_pathlen > 1) { 2298 1.143.2.2 yamt memcpy(cp + linklen, ndp->ni_next, ndp->ni_pathlen); 2299 1.143.2.2 yamt PNBUF_PUT(cnp->cn_pnbuf); 2300 1.143.2.2 yamt cnp->cn_pnbuf = cp; 2301 1.143.2.2 yamt } else 2302 1.143.2.2 yamt cnp->cn_pnbuf[linklen] = '\0'; 2303 1.143.2.2 yamt ndp->ni_pathlen += linklen; 2304 1.143.2.2 yamt vput(ndp->ni_vp); 2305 1.143.2.2 yamt dp = ndp->ni_dvp; 2306 1.143.2.2 yamt /* 2307 1.143.2.2 yamt * Check if root directory should replace current directory. 2308 1.143.2.2 yamt */ 2309 1.143.2.2 yamt if (cnp->cn_pnbuf[0] == '/') { 2310 1.143.2.2 yamt vrele(dp); 2311 1.143.2.2 yamt dp = ndp->ni_rootdir; 2312 1.143.2.2 yamt VREF(dp); 2313 1.143.2.2 yamt } 2314 1.143.2.2 yamt } 2315 1.143.2.2 yamt } 2316 1.143.2.2 yamt vrele(ndp->ni_dvp); 2317 1.143.2.2 yamt vput(ndp->ni_vp); 2318 1.143.2.2 yamt ndp->ni_vp = NULL; 2319 1.143.2.2 yamt out: 2320 1.143.2.2 yamt PNBUF_PUT(cnp->cn_pnbuf); 2321 1.143.2.2 yamt return (error); 2322 1.143.2.2 yamt } 2323 1.143.2.2 yamt 2324 1.143.2.2 yamt /* 2325 1.143.2.2 yamt * A fiddled version of m_adj() that ensures null fill to a 32-bit 2326 1.143.2.2 yamt * boundary and only trims off the back end 2327 1.143.2.2 yamt * 2328 1.143.2.2 yamt * 1. trim off 'len' bytes as m_adj(mp, -len). 2329 1.143.2.2 yamt * 2. add zero-padding 'nul' bytes at the end of the mbuf chain. 2330 1.143.2.2 yamt */ 2331 1.143.2.2 yamt void 2332 1.143.2.2 yamt nfs_zeropad(mp, len, nul) 2333 1.143.2.2 yamt struct mbuf *mp; 2334 1.143.2.2 yamt int len; 2335 1.143.2.2 yamt int nul; 2336 1.143.2.2 yamt { 2337 1.143.2.2 yamt struct mbuf *m; 2338 1.143.2.2 yamt int count; 2339 1.143.2.2 yamt 2340 1.143.2.2 yamt /* 2341 1.143.2.2 yamt * Trim from tail. Scan the mbuf chain, 2342 1.143.2.2 yamt * calculating its length and finding the last mbuf. 2343 1.143.2.2 yamt * If the adjustment only affects this mbuf, then just 2344 1.143.2.2 yamt * adjust and return. Otherwise, rescan and truncate 2345 1.143.2.2 yamt * after the remaining size. 2346 1.143.2.2 yamt */ 2347 1.143.2.2 yamt count = 0; 2348 1.143.2.2 yamt m = mp; 2349 1.143.2.2 yamt for (;;) { 2350 1.143.2.2 yamt count += m->m_len; 2351 1.143.2.2 yamt if (m->m_next == NULL) 2352 1.143.2.2 yamt break; 2353 1.143.2.2 yamt m = m->m_next; 2354 1.143.2.2 yamt } 2355 1.143.2.2 yamt 2356 1.143.2.2 yamt KDASSERT(count >= len); 2357 1.143.2.2 yamt 2358 1.143.2.2 yamt if (m->m_len >= len) { 2359 1.143.2.2 yamt m->m_len -= len; 2360 1.143.2.2 yamt } else { 2361 1.143.2.2 yamt count -= len; 2362 1.143.2.2 yamt /* 2363 1.143.2.2 yamt * Correct length for chain is "count". 2364 1.143.2.2 yamt * Find the mbuf with last data, adjust its length, 2365 1.143.2.2 yamt * and toss data from remaining mbufs on chain. 2366 1.143.2.2 yamt */ 2367 1.143.2.2 yamt for (m = mp; m; m = m->m_next) { 2368 1.143.2.2 yamt if (m->m_len >= count) { 2369 1.143.2.2 yamt m->m_len = count; 2370 1.143.2.2 yamt break; 2371 1.143.2.2 yamt } 2372 1.143.2.2 yamt count -= m->m_len; 2373 1.143.2.2 yamt } 2374 1.143.2.2 yamt m_freem(m->m_next); 2375 1.143.2.2 yamt m->m_next = NULL; 2376 1.143.2.2 yamt } 2377 1.143.2.2 yamt 2378 1.143.2.2 yamt KDASSERT(m->m_next == NULL); 2379 1.143.2.2 yamt 2380 1.143.2.2 yamt /* 2381 1.143.2.2 yamt * zero-padding. 2382 1.143.2.2 yamt */ 2383 1.143.2.2 yamt if (nul > 0) { 2384 1.143.2.2 yamt char *cp; 2385 1.143.2.2 yamt int i; 2386 1.143.2.2 yamt 2387 1.143.2.2 yamt if (M_ROMAP(m) || M_TRAILINGSPACE(m) < nul) { 2388 1.143.2.2 yamt struct mbuf *n; 2389 1.143.2.2 yamt 2390 1.143.2.2 yamt KDASSERT(MLEN >= nul); 2391 1.143.2.2 yamt n = m_get(M_WAIT, MT_DATA); 2392 1.143.2.2 yamt MCLAIM(n, &nfs_mowner); 2393 1.143.2.2 yamt n->m_len = nul; 2394 1.143.2.2 yamt n->m_next = NULL; 2395 1.143.2.2 yamt m->m_next = n; 2396 1.143.2.2 yamt cp = mtod(n, caddr_t); 2397 1.143.2.2 yamt } else { 2398 1.143.2.2 yamt cp = mtod(m, caddr_t) + m->m_len; 2399 1.143.2.2 yamt m->m_len += nul; 2400 1.143.2.2 yamt } 2401 1.143.2.2 yamt for (i = 0; i < nul; i++) 2402 1.143.2.2 yamt *cp++ = '\0'; 2403 1.143.2.2 yamt } 2404 1.143.2.2 yamt return; 2405 1.143.2.2 yamt } 2406 1.143.2.2 yamt 2407 1.143.2.2 yamt /* 2408 1.143.2.2 yamt * Make these functions instead of macros, so that the kernel text size 2409 1.143.2.2 yamt * doesn't get too big... 2410 1.143.2.2 yamt */ 2411 1.143.2.2 yamt void 2412 1.143.2.2 yamt nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 2413 1.143.2.2 yamt struct nfsrv_descript *nfsd; 2414 1.143.2.2 yamt int before_ret; 2415 1.143.2.2 yamt struct vattr *before_vap; 2416 1.143.2.2 yamt int after_ret; 2417 1.143.2.2 yamt struct vattr *after_vap; 2418 1.143.2.2 yamt struct mbuf **mbp; 2419 1.143.2.2 yamt char **bposp; 2420 1.143.2.2 yamt { 2421 1.143.2.2 yamt struct mbuf *mb = *mbp; 2422 1.143.2.2 yamt char *bpos = *bposp; 2423 1.143.2.2 yamt u_int32_t *tl; 2424 1.143.2.2 yamt 2425 1.143.2.2 yamt if (before_ret) { 2426 1.143.2.2 yamt nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 2427 1.143.2.2 yamt *tl = nfs_false; 2428 1.143.2.2 yamt } else { 2429 1.143.2.2 yamt nfsm_build(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 2430 1.143.2.2 yamt *tl++ = nfs_true; 2431 1.143.2.2 yamt txdr_hyper(before_vap->va_size, tl); 2432 1.143.2.2 yamt tl += 2; 2433 1.143.2.2 yamt txdr_nfsv3time(&(before_vap->va_mtime), tl); 2434 1.143.2.2 yamt tl += 2; 2435 1.143.2.2 yamt txdr_nfsv3time(&(before_vap->va_ctime), tl); 2436 1.143.2.2 yamt } 2437 1.143.2.2 yamt *bposp = bpos; 2438 1.143.2.2 yamt *mbp = mb; 2439 1.143.2.2 yamt nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 2440 1.143.2.2 yamt } 2441 1.143.2.2 yamt 2442 1.143.2.2 yamt void 2443 1.143.2.2 yamt nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 2444 1.143.2.2 yamt struct nfsrv_descript *nfsd; 2445 1.143.2.2 yamt int after_ret; 2446 1.143.2.2 yamt struct vattr *after_vap; 2447 1.143.2.2 yamt struct mbuf **mbp; 2448 1.143.2.2 yamt char **bposp; 2449 1.143.2.2 yamt { 2450 1.143.2.2 yamt struct mbuf *mb = *mbp; 2451 1.143.2.2 yamt char *bpos = *bposp; 2452 1.143.2.2 yamt u_int32_t *tl; 2453 1.143.2.2 yamt struct nfs_fattr *fp; 2454 1.143.2.2 yamt 2455 1.143.2.2 yamt if (after_ret) { 2456 1.143.2.2 yamt nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 2457 1.143.2.2 yamt *tl = nfs_false; 2458 1.143.2.2 yamt } else { 2459 1.143.2.2 yamt nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_V3FATTR); 2460 1.143.2.2 yamt *tl++ = nfs_true; 2461 1.143.2.2 yamt fp = (struct nfs_fattr *)tl; 2462 1.143.2.2 yamt nfsm_srvfattr(nfsd, after_vap, fp); 2463 1.143.2.2 yamt } 2464 1.143.2.2 yamt *mbp = mb; 2465 1.143.2.2 yamt *bposp = bpos; 2466 1.143.2.2 yamt } 2467 1.143.2.2 yamt 2468 1.143.2.2 yamt void 2469 1.143.2.2 yamt nfsm_srvfattr(nfsd, vap, fp) 2470 1.143.2.2 yamt struct nfsrv_descript *nfsd; 2471 1.143.2.2 yamt struct vattr *vap; 2472 1.143.2.2 yamt struct nfs_fattr *fp; 2473 1.143.2.2 yamt { 2474 1.143.2.2 yamt 2475 1.143.2.2 yamt fp->fa_nlink = txdr_unsigned(vap->va_nlink); 2476 1.143.2.2 yamt fp->fa_uid = txdr_unsigned(vap->va_uid); 2477 1.143.2.2 yamt fp->fa_gid = txdr_unsigned(vap->va_gid); 2478 1.143.2.2 yamt if (nfsd->nd_flag & ND_NFSV3) { 2479 1.143.2.2 yamt fp->fa_type = vtonfsv3_type(vap->va_type); 2480 1.143.2.2 yamt fp->fa_mode = vtonfsv3_mode(vap->va_mode); 2481 1.143.2.2 yamt txdr_hyper(vap->va_size, &fp->fa3_size); 2482 1.143.2.2 yamt txdr_hyper(vap->va_bytes, &fp->fa3_used); 2483 1.143.2.2 yamt fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 2484 1.143.2.2 yamt fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 2485 1.143.2.2 yamt fp->fa3_fsid.nfsuquad[0] = 0; 2486 1.143.2.2 yamt fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 2487 1.143.2.2 yamt fp->fa3_fileid.nfsuquad[0] = 0; 2488 1.143.2.2 yamt fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid); 2489 1.143.2.2 yamt txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 2490 1.143.2.2 yamt txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 2491 1.143.2.2 yamt txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 2492 1.143.2.2 yamt } else { 2493 1.143.2.2 yamt fp->fa_type = vtonfsv2_type(vap->va_type); 2494 1.143.2.2 yamt fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 2495 1.143.2.2 yamt fp->fa2_size = txdr_unsigned(vap->va_size); 2496 1.143.2.2 yamt fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 2497 1.143.2.2 yamt if (vap->va_type == VFIFO) 2498 1.143.2.2 yamt fp->fa2_rdev = 0xffffffff; 2499 1.143.2.2 yamt else 2500 1.143.2.2 yamt fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 2501 1.143.2.2 yamt fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 2502 1.143.2.2 yamt fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 2503 1.143.2.2 yamt fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 2504 1.143.2.2 yamt txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 2505 1.143.2.2 yamt txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 2506 1.143.2.2 yamt txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 2507 1.143.2.2 yamt } 2508 1.143.2.2 yamt } 2509 1.143.2.2 yamt 2510 1.143.2.2 yamt /* 2511 1.143.2.2 yamt * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 2512 1.143.2.2 yamt * - look up fsid in mount list (if not found ret error) 2513 1.143.2.2 yamt * - get vp and export rights by calling VFS_FHTOVP() 2514 1.143.2.2 yamt * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2515 1.143.2.2 yamt * - if not lockflag unlock it with VOP_UNLOCK() 2516 1.143.2.2 yamt */ 2517 1.143.2.2 yamt int 2518 1.143.2.2 yamt nfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag, pubflag) 2519 1.143.2.2 yamt fhandle_t *fhp; 2520 1.143.2.2 yamt int lockflag; 2521 1.143.2.2 yamt struct vnode **vpp; 2522 1.143.2.2 yamt struct ucred *cred; 2523 1.143.2.2 yamt struct nfssvc_sock *slp; 2524 1.143.2.2 yamt struct mbuf *nam; 2525 1.143.2.2 yamt int *rdonlyp; 2526 1.143.2.2 yamt int kerbflag; 2527 1.143.2.2 yamt { 2528 1.143.2.2 yamt struct mount *mp; 2529 1.143.2.2 yamt int i; 2530 1.143.2.2 yamt struct ucred *credanon; 2531 1.143.2.2 yamt int error, exflags; 2532 1.143.2.2 yamt struct sockaddr_in *saddr; 2533 1.143.2.2 yamt 2534 1.143.2.2 yamt *vpp = (struct vnode *)0; 2535 1.143.2.2 yamt 2536 1.143.2.2 yamt if (nfs_ispublicfh(fhp)) { 2537 1.143.2.2 yamt if (!pubflag || !nfs_pub.np_valid) 2538 1.143.2.2 yamt return (ESTALE); 2539 1.143.2.2 yamt fhp = &nfs_pub.np_handle; 2540 1.143.2.2 yamt } 2541 1.143.2.2 yamt 2542 1.143.2.2 yamt mp = vfs_getvfs(&fhp->fh_fsid); 2543 1.143.2.2 yamt if (!mp) 2544 1.143.2.2 yamt return (ESTALE); 2545 1.143.2.2 yamt error = VFS_CHECKEXP(mp, nam, &exflags, &credanon); 2546 1.143.2.2 yamt if (error) 2547 1.143.2.2 yamt return (error); 2548 1.143.2.2 yamt error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp); 2549 1.143.2.2 yamt if (error) 2550 1.143.2.2 yamt return (error); 2551 1.143.2.2 yamt 2552 1.143.2.2 yamt if (!(exflags & (MNT_EXNORESPORT|MNT_EXPUBLIC))) { 2553 1.143.2.2 yamt saddr = mtod(nam, struct sockaddr_in *); 2554 1.143.2.2 yamt if ((saddr->sin_family == AF_INET) && 2555 1.143.2.2 yamt ntohs(saddr->sin_port) >= IPPORT_RESERVED) { 2556 1.143.2.2 yamt vput(*vpp); 2557 1.143.2.2 yamt return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2558 1.143.2.2 yamt } 2559 1.143.2.2 yamt #ifdef INET6 2560 1.143.2.2 yamt if ((saddr->sin_family == AF_INET6) && 2561 1.143.2.2 yamt ntohs(saddr->sin_port) >= IPV6PORT_RESERVED) { 2562 1.143.2.2 yamt vput(*vpp); 2563 1.143.2.2 yamt return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2564 1.143.2.2 yamt } 2565 1.143.2.2 yamt #endif 2566 1.143.2.2 yamt } 2567 1.143.2.2 yamt /* 2568 1.143.2.2 yamt * Check/setup credentials. 2569 1.143.2.2 yamt */ 2570 1.143.2.2 yamt if (exflags & MNT_EXKERB) { 2571 1.143.2.2 yamt if (!kerbflag) { 2572 1.143.2.2 yamt vput(*vpp); 2573 1.143.2.2 yamt return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2574 1.143.2.2 yamt } 2575 1.143.2.2 yamt } else if (kerbflag) { 2576 1.143.2.2 yamt vput(*vpp); 2577 1.143.2.2 yamt return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2578 1.143.2.2 yamt } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) { 2579 1.143.2.2 yamt cred->cr_uid = credanon->cr_uid; 2580 1.143.2.2 yamt cred->cr_gid = credanon->cr_gid; 2581 1.143.2.2 yamt for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++) 2582 1.143.2.2 yamt cred->cr_groups[i] = credanon->cr_groups[i]; 2583 1.143.2.2 yamt cred->cr_ngroups = i; 2584 1.143.2.2 yamt } 2585 1.143.2.2 yamt if (exflags & MNT_EXRDONLY) 2586 1.143.2.2 yamt *rdonlyp = 1; 2587 1.143.2.2 yamt else 2588 1.143.2.2 yamt *rdonlyp = 0; 2589 1.143.2.2 yamt if (!lockflag) 2590 1.143.2.2 yamt VOP_UNLOCK(*vpp, 0); 2591 1.143.2.2 yamt return (0); 2592 1.143.2.2 yamt } 2593 1.143.2.2 yamt 2594 1.143.2.2 yamt /* 2595 1.143.2.2 yamt * WebNFS: check if a filehandle is a public filehandle. For v3, this 2596 1.143.2.2 yamt * means a length of 0, for v2 it means all zeroes. nfsm_srvmtofh has 2597 1.143.2.2 yamt * transformed this to all zeroes in both cases, so check for it. 2598 1.143.2.2 yamt */ 2599 1.143.2.2 yamt int 2600 1.143.2.2 yamt nfs_ispublicfh(fhp) 2601 1.143.2.2 yamt fhandle_t *fhp; 2602 1.143.2.2 yamt { 2603 1.143.2.2 yamt char *cp = (char *)fhp; 2604 1.143.2.2 yamt int i; 2605 1.143.2.2 yamt 2606 1.143.2.2 yamt for (i = 0; i < NFSX_V3FH; i++) 2607 1.143.2.2 yamt if (*cp++ != 0) 2608 1.143.2.2 yamt return (FALSE); 2609 1.143.2.2 yamt return (TRUE); 2610 1.143.2.2 yamt } 2611 1.143.2.2 yamt 2612 1.143.2.2 yamt /* 2613 1.143.2.2 yamt * This function compares two net addresses by family and returns TRUE 2614 1.143.2.2 yamt * if they are the same host. 2615 1.143.2.2 yamt * If there is any doubt, return FALSE. 2616 1.143.2.2 yamt * The AF_INET family is handled as a special case so that address mbufs 2617 1.143.2.2 yamt * don't need to be saved to store "struct in_addr", which is only 4 bytes. 2618 1.143.2.2 yamt */ 2619 1.143.2.2 yamt int 2620 1.143.2.2 yamt netaddr_match(family, haddr, nam) 2621 1.143.2.2 yamt int family; 2622 1.143.2.2 yamt union nethostaddr *haddr; 2623 1.143.2.2 yamt struct mbuf *nam; 2624 1.143.2.2 yamt { 2625 1.143.2.2 yamt struct sockaddr_in *inetaddr; 2626 1.143.2.2 yamt 2627 1.143.2.2 yamt switch (family) { 2628 1.143.2.2 yamt case AF_INET: 2629 1.143.2.2 yamt inetaddr = mtod(nam, struct sockaddr_in *); 2630 1.143.2.2 yamt if (inetaddr->sin_family == AF_INET && 2631 1.143.2.2 yamt inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 2632 1.143.2.2 yamt return (1); 2633 1.143.2.2 yamt break; 2634 1.143.2.2 yamt #ifdef INET6 2635 1.143.2.2 yamt case AF_INET6: 2636 1.143.2.2 yamt { 2637 1.143.2.2 yamt struct sockaddr_in6 *sin6_1, *sin6_2; 2638 1.143.2.2 yamt 2639 1.143.2.2 yamt sin6_1 = mtod(nam, struct sockaddr_in6 *); 2640 1.143.2.2 yamt sin6_2 = mtod(haddr->had_nam, struct sockaddr_in6 *); 2641 1.143.2.2 yamt if (sin6_1->sin6_family == AF_INET6 && 2642 1.143.2.2 yamt IN6_ARE_ADDR_EQUAL(&sin6_1->sin6_addr, &sin6_2->sin6_addr)) 2643 1.143.2.2 yamt return 1; 2644 1.143.2.2 yamt } 2645 1.143.2.2 yamt #endif 2646 1.143.2.2 yamt #ifdef ISO 2647 1.143.2.2 yamt case AF_ISO: 2648 1.143.2.2 yamt { 2649 1.143.2.2 yamt struct sockaddr_iso *isoaddr1, *isoaddr2; 2650 1.143.2.2 yamt 2651 1.143.2.2 yamt isoaddr1 = mtod(nam, struct sockaddr_iso *); 2652 1.143.2.2 yamt isoaddr2 = mtod(haddr->had_nam, struct sockaddr_iso *); 2653 1.143.2.2 yamt if (isoaddr1->siso_family == AF_ISO && 2654 1.143.2.2 yamt isoaddr1->siso_nlen > 0 && 2655 1.143.2.2 yamt isoaddr1->siso_nlen == isoaddr2->siso_nlen && 2656 1.143.2.2 yamt SAME_ISOADDR(isoaddr1, isoaddr2)) 2657 1.143.2.2 yamt return (1); 2658 1.143.2.2 yamt break; 2659 1.143.2.2 yamt } 2660 1.143.2.2 yamt #endif /* ISO */ 2661 1.143.2.2 yamt default: 2662 1.143.2.2 yamt break; 2663 1.143.2.2 yamt }; 2664 1.143.2.2 yamt return (0); 2665 1.143.2.2 yamt } 2666 1.143.2.2 yamt 2667 1.143.2.2 yamt /* 2668 1.143.2.2 yamt * The write verifier has changed (probably due to a server reboot), so all 2669 1.143.2.2 yamt * PG_NEEDCOMMIT pages will have to be written again. Since they are marked 2670 1.143.2.2 yamt * as dirty or are being written out just now, all this takes is clearing 2671 1.143.2.2 yamt * the PG_NEEDCOMMIT flag. Once done the new write verifier can be set for 2672 1.143.2.2 yamt * the mount point. 2673 1.143.2.2 yamt */ 2674 1.143.2.2 yamt void 2675 1.143.2.2 yamt nfs_clearcommit(mp) 2676 1.143.2.2 yamt struct mount *mp; 2677 1.143.2.2 yamt { 2678 1.143.2.2 yamt struct vnode *vp; 2679 1.143.2.2 yamt struct nfsnode *np; 2680 1.143.2.2 yamt struct vm_page *pg; 2681 1.143.2.2 yamt struct nfsmount *nmp = VFSTONFS(mp); 2682 1.143.2.2 yamt 2683 1.143.2.2 yamt lockmgr(&nmp->nm_writeverflock, LK_EXCLUSIVE, NULL); 2684 1.143.2.2 yamt 2685 1.143.2.2 yamt LIST_FOREACH(vp, &mp->mnt_vnodelist, v_mntvnodes) { 2686 1.143.2.2 yamt KASSERT(vp->v_mount == mp); 2687 1.143.2.2 yamt if (vp->v_type != VREG) 2688 1.143.2.2 yamt continue; 2689 1.143.2.2 yamt np = VTONFS(vp); 2690 1.143.2.2 yamt np->n_pushlo = np->n_pushhi = np->n_pushedlo = 2691 1.143.2.2 yamt np->n_pushedhi = 0; 2692 1.143.2.2 yamt np->n_commitflags &= 2693 1.143.2.2 yamt ~(NFS_COMMIT_PUSH_VALID | NFS_COMMIT_PUSHED_VALID); 2694 1.143.2.2 yamt simple_lock(&vp->v_uobj.vmobjlock); 2695 1.143.2.2 yamt TAILQ_FOREACH(pg, &vp->v_uobj.memq, listq) { 2696 1.143.2.2 yamt pg->flags &= ~PG_NEEDCOMMIT; 2697 1.143.2.2 yamt } 2698 1.143.2.2 yamt simple_unlock(&vp->v_uobj.vmobjlock); 2699 1.143.2.2 yamt } 2700 1.143.2.2 yamt simple_lock(&nmp->nm_slock); 2701 1.143.2.2 yamt nmp->nm_iflag &= ~NFSMNT_STALEWRITEVERF; 2702 1.143.2.2 yamt simple_unlock(&nmp->nm_slock); 2703 1.143.2.2 yamt lockmgr(&nmp->nm_writeverflock, LK_RELEASE, NULL); 2704 1.143.2.2 yamt } 2705 1.143.2.2 yamt 2706 1.143.2.2 yamt void 2707 1.143.2.2 yamt nfs_merge_commit_ranges(vp) 2708 1.143.2.2 yamt struct vnode *vp; 2709 1.143.2.2 yamt { 2710 1.143.2.2 yamt struct nfsnode *np = VTONFS(vp); 2711 1.143.2.2 yamt 2712 1.143.2.2 yamt KASSERT(np->n_commitflags & NFS_COMMIT_PUSH_VALID); 2713 1.143.2.2 yamt 2714 1.143.2.2 yamt if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) { 2715 1.143.2.2 yamt np->n_pushedlo = np->n_pushlo; 2716 1.143.2.2 yamt np->n_pushedhi = np->n_pushhi; 2717 1.143.2.2 yamt np->n_commitflags |= NFS_COMMIT_PUSHED_VALID; 2718 1.143.2.2 yamt } else { 2719 1.143.2.2 yamt if (np->n_pushlo < np->n_pushedlo) 2720 1.143.2.2 yamt np->n_pushedlo = np->n_pushlo; 2721 1.143.2.2 yamt if (np->n_pushhi > np->n_pushedhi) 2722 1.143.2.2 yamt np->n_pushedhi = np->n_pushhi; 2723 1.143.2.2 yamt } 2724 1.143.2.2 yamt 2725 1.143.2.2 yamt np->n_pushlo = np->n_pushhi = 0; 2726 1.143.2.2 yamt np->n_commitflags &= ~NFS_COMMIT_PUSH_VALID; 2727 1.143.2.2 yamt 2728 1.143.2.2 yamt #ifdef NFS_DEBUG_COMMIT 2729 1.143.2.2 yamt printf("merge: committed: %u - %u\n", (unsigned)np->n_pushedlo, 2730 1.143.2.2 yamt (unsigned)np->n_pushedhi); 2731 1.143.2.2 yamt #endif 2732 1.143.2.2 yamt } 2733 1.143.2.2 yamt 2734 1.143.2.2 yamt int 2735 1.143.2.2 yamt nfs_in_committed_range(vp, off, len) 2736 1.143.2.2 yamt struct vnode *vp; 2737 1.143.2.2 yamt off_t off, len; 2738 1.143.2.2 yamt { 2739 1.143.2.2 yamt struct nfsnode *np = VTONFS(vp); 2740 1.143.2.2 yamt off_t lo, hi; 2741 1.143.2.2 yamt 2742 1.143.2.2 yamt if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) 2743 1.143.2.2 yamt return 0; 2744 1.143.2.2 yamt lo = off; 2745 1.143.2.2 yamt hi = lo + len; 2746 1.143.2.2 yamt 2747 1.143.2.2 yamt return (lo >= np->n_pushedlo && hi <= np->n_pushedhi); 2748 1.143.2.2 yamt } 2749 1.143.2.2 yamt 2750 1.143.2.2 yamt int 2751 1.143.2.2 yamt nfs_in_tobecommitted_range(vp, off, len) 2752 1.143.2.2 yamt struct vnode *vp; 2753 1.143.2.2 yamt off_t off, len; 2754 1.143.2.2 yamt { 2755 1.143.2.2 yamt struct nfsnode *np = VTONFS(vp); 2756 1.143.2.2 yamt off_t lo, hi; 2757 1.143.2.2 yamt 2758 1.143.2.2 yamt if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) 2759 1.143.2.2 yamt return 0; 2760 1.143.2.2 yamt lo = off; 2761 1.143.2.2 yamt hi = lo + len; 2762 1.143.2.2 yamt 2763 1.143.2.2 yamt return (lo >= np->n_pushlo && hi <= np->n_pushhi); 2764 1.143.2.2 yamt } 2765 1.143.2.2 yamt 2766 1.143.2.2 yamt void 2767 1.143.2.2 yamt nfs_add_committed_range(vp, off, len) 2768 1.143.2.2 yamt struct vnode *vp; 2769 1.143.2.2 yamt off_t off, len; 2770 1.143.2.2 yamt { 2771 1.143.2.2 yamt struct nfsnode *np = VTONFS(vp); 2772 1.143.2.2 yamt off_t lo, hi; 2773 1.143.2.2 yamt 2774 1.143.2.2 yamt lo = off; 2775 1.143.2.2 yamt hi = lo + len; 2776 1.143.2.2 yamt 2777 1.143.2.2 yamt if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) { 2778 1.143.2.2 yamt np->n_pushedlo = lo; 2779 1.143.2.2 yamt np->n_pushedhi = hi; 2780 1.143.2.2 yamt np->n_commitflags |= NFS_COMMIT_PUSHED_VALID; 2781 1.143.2.2 yamt } else { 2782 1.143.2.2 yamt if (hi > np->n_pushedhi) 2783 1.143.2.2 yamt np->n_pushedhi = hi; 2784 1.143.2.2 yamt if (lo < np->n_pushedlo) 2785 1.143.2.2 yamt np->n_pushedlo = lo; 2786 1.143.2.2 yamt } 2787 1.143.2.2 yamt #ifdef NFS_DEBUG_COMMIT 2788 1.143.2.2 yamt printf("add: committed: %u - %u\n", (unsigned)np->n_pushedlo, 2789 1.143.2.2 yamt (unsigned)np->n_pushedhi); 2790 1.143.2.2 yamt #endif 2791 1.143.2.2 yamt } 2792 1.143.2.2 yamt 2793 1.143.2.2 yamt void 2794 1.143.2.2 yamt nfs_del_committed_range(vp, off, len) 2795 1.143.2.2 yamt struct vnode *vp; 2796 1.143.2.2 yamt off_t off, len; 2797 1.143.2.2 yamt { 2798 1.143.2.2 yamt struct nfsnode *np = VTONFS(vp); 2799 1.143.2.2 yamt off_t lo, hi; 2800 1.143.2.2 yamt 2801 1.143.2.2 yamt if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) 2802 1.143.2.2 yamt return; 2803 1.143.2.2 yamt 2804 1.143.2.2 yamt lo = off; 2805 1.143.2.2 yamt hi = lo + len; 2806 1.143.2.2 yamt 2807 1.143.2.2 yamt if (lo > np->n_pushedhi || hi < np->n_pushedlo) 2808 1.143.2.2 yamt return; 2809 1.143.2.2 yamt if (lo <= np->n_pushedlo) 2810 1.143.2.2 yamt np->n_pushedlo = hi; 2811 1.143.2.2 yamt else if (hi >= np->n_pushedhi) 2812 1.143.2.2 yamt np->n_pushedhi = lo; 2813 1.143.2.2 yamt else { 2814 1.143.2.2 yamt /* 2815 1.143.2.2 yamt * XXX There's only one range. If the deleted range 2816 1.143.2.2 yamt * is in the middle, pick the largest of the 2817 1.143.2.2 yamt * contiguous ranges that it leaves. 2818 1.143.2.2 yamt */ 2819 1.143.2.2 yamt if ((np->n_pushedlo - lo) > (hi - np->n_pushedhi)) 2820 1.143.2.2 yamt np->n_pushedhi = lo; 2821 1.143.2.2 yamt else 2822 1.143.2.2 yamt np->n_pushedlo = hi; 2823 1.143.2.2 yamt } 2824 1.143.2.2 yamt #ifdef NFS_DEBUG_COMMIT 2825 1.143.2.2 yamt printf("del: committed: %u - %u\n", (unsigned)np->n_pushedlo, 2826 1.143.2.2 yamt (unsigned)np->n_pushedhi); 2827 1.143.2.2 yamt #endif 2828 1.143.2.2 yamt } 2829 1.143.2.2 yamt 2830 1.143.2.2 yamt void 2831 1.143.2.2 yamt nfs_add_tobecommitted_range(vp, off, len) 2832 1.143.2.2 yamt struct vnode *vp; 2833 1.143.2.2 yamt off_t off, len; 2834 1.143.2.2 yamt { 2835 1.143.2.2 yamt struct nfsnode *np = VTONFS(vp); 2836 1.143.2.2 yamt off_t lo, hi; 2837 1.143.2.2 yamt 2838 1.143.2.2 yamt lo = off; 2839 1.143.2.2 yamt hi = lo + len; 2840 1.143.2.2 yamt 2841 1.143.2.2 yamt if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) { 2842 1.143.2.2 yamt np->n_pushlo = lo; 2843 1.143.2.2 yamt np->n_pushhi = hi; 2844 1.143.2.2 yamt np->n_commitflags |= NFS_COMMIT_PUSH_VALID; 2845 1.143.2.2 yamt } else { 2846 1.143.2.2 yamt if (lo < np->n_pushlo) 2847 1.143.2.2 yamt np->n_pushlo = lo; 2848 1.143.2.2 yamt if (hi > np->n_pushhi) 2849 1.143.2.2 yamt np->n_pushhi = hi; 2850 1.143.2.2 yamt } 2851 1.143.2.2 yamt #ifdef NFS_DEBUG_COMMIT 2852 1.143.2.2 yamt printf("add: tobecommitted: %u - %u\n", (unsigned)np->n_pushlo, 2853 1.143.2.2 yamt (unsigned)np->n_pushhi); 2854 1.143.2.2 yamt #endif 2855 1.143.2.2 yamt } 2856 1.143.2.2 yamt 2857 1.143.2.2 yamt void 2858 1.143.2.2 yamt nfs_del_tobecommitted_range(vp, off, len) 2859 1.143.2.2 yamt struct vnode *vp; 2860 1.143.2.2 yamt off_t off, len; 2861 1.143.2.2 yamt { 2862 1.143.2.2 yamt struct nfsnode *np = VTONFS(vp); 2863 1.143.2.2 yamt off_t lo, hi; 2864 1.143.2.2 yamt 2865 1.143.2.2 yamt if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) 2866 1.143.2.2 yamt return; 2867 1.143.2.2 yamt 2868 1.143.2.2 yamt lo = off; 2869 1.143.2.2 yamt hi = lo + len; 2870 1.143.2.2 yamt 2871 1.143.2.2 yamt if (lo > np->n_pushhi || hi < np->n_pushlo) 2872 1.143.2.2 yamt return; 2873 1.143.2.2 yamt 2874 1.143.2.2 yamt if (lo <= np->n_pushlo) 2875 1.143.2.2 yamt np->n_pushlo = hi; 2876 1.143.2.2 yamt else if (hi >= np->n_pushhi) 2877 1.143.2.2 yamt np->n_pushhi = lo; 2878 1.143.2.2 yamt else { 2879 1.143.2.2 yamt /* 2880 1.143.2.2 yamt * XXX There's only one range. If the deleted range 2881 1.143.2.2 yamt * is in the middle, pick the largest of the 2882 1.143.2.2 yamt * contiguous ranges that it leaves. 2883 1.143.2.2 yamt */ 2884 1.143.2.2 yamt if ((np->n_pushlo - lo) > (hi - np->n_pushhi)) 2885 1.143.2.2 yamt np->n_pushhi = lo; 2886 1.143.2.2 yamt else 2887 1.143.2.2 yamt np->n_pushlo = hi; 2888 1.143.2.2 yamt } 2889 1.143.2.2 yamt #ifdef NFS_DEBUG_COMMIT 2890 1.143.2.2 yamt printf("del: tobecommitted: %u - %u\n", (unsigned)np->n_pushlo, 2891 1.143.2.2 yamt (unsigned)np->n_pushhi); 2892 1.143.2.2 yamt #endif 2893 1.143.2.2 yamt } 2894 1.143.2.2 yamt 2895 1.143.2.2 yamt /* 2896 1.143.2.2 yamt * Map errnos to NFS error numbers. For Version 3 also filter out error 2897 1.143.2.2 yamt * numbers not specified for the associated procedure. 2898 1.143.2.2 yamt */ 2899 1.143.2.2 yamt int 2900 1.143.2.2 yamt nfsrv_errmap(nd, err) 2901 1.143.2.2 yamt struct nfsrv_descript *nd; 2902 1.143.2.2 yamt int err; 2903 1.143.2.2 yamt { 2904 1.143.2.2 yamt const short *defaulterrp, *errp; 2905 1.143.2.2 yamt 2906 1.143.2.2 yamt if (nd->nd_flag & ND_NFSV3) { 2907 1.143.2.2 yamt if (nd->nd_procnum <= NFSPROC_COMMIT) { 2908 1.143.2.2 yamt errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 2909 1.143.2.2 yamt while (*++errp) { 2910 1.143.2.2 yamt if (*errp == err) 2911 1.143.2.2 yamt return (err); 2912 1.143.2.2 yamt else if (*errp > err) 2913 1.143.2.2 yamt break; 2914 1.143.2.2 yamt } 2915 1.143.2.2 yamt return ((int)*defaulterrp); 2916 1.143.2.2 yamt } else 2917 1.143.2.2 yamt return (err & 0xffff); 2918 1.143.2.2 yamt } 2919 1.143.2.2 yamt if (err <= ELAST) 2920 1.143.2.2 yamt return ((int)nfsrv_v2errmap[err - 1]); 2921 1.143.2.2 yamt return (NFSERR_IO); 2922 1.143.2.2 yamt } 2923 1.143.2.2 yamt 2924 1.143.2.2 yamt /* 2925 1.143.2.2 yamt * Sort the group list in increasing numerical order. 2926 1.143.2.2 yamt * (Insertion sort by Chris Torek, who was grossed out by the bubble sort 2927 1.143.2.2 yamt * that used to be here.) 2928 1.143.2.2 yamt */ 2929 1.143.2.2 yamt void 2930 1.143.2.2 yamt nfsrvw_sort(list, num) 2931 1.143.2.2 yamt gid_t *list; 2932 1.143.2.2 yamt int num; 2933 1.143.2.2 yamt { 2934 1.143.2.2 yamt int i, j; 2935 1.143.2.2 yamt gid_t v; 2936 1.143.2.2 yamt 2937 1.143.2.2 yamt /* Insertion sort. */ 2938 1.143.2.2 yamt for (i = 1; i < num; i++) { 2939 1.143.2.2 yamt v = list[i]; 2940 1.143.2.2 yamt /* find correct slot for value v, moving others up */ 2941 1.143.2.2 yamt for (j = i; --j >= 0 && v < list[j];) 2942 1.143.2.2 yamt list[j + 1] = list[j]; 2943 1.143.2.2 yamt list[j + 1] = v; 2944 1.143.2.2 yamt } 2945 1.143.2.2 yamt } 2946 1.143.2.2 yamt 2947 1.143.2.2 yamt /* 2948 1.143.2.2 yamt * copy credentials making sure that the result can be compared with memcmp(). 2949 1.143.2.2 yamt */ 2950 1.143.2.2 yamt void 2951 1.143.2.2 yamt nfsrv_setcred(incred, outcred) 2952 1.143.2.2 yamt struct ucred *incred, *outcred; 2953 1.143.2.2 yamt { 2954 1.143.2.2 yamt int i; 2955 1.143.2.2 yamt 2956 1.143.2.2 yamt memset((caddr_t)outcred, 0, sizeof (struct ucred)); 2957 1.143.2.2 yamt outcred->cr_ref = 1; 2958 1.143.2.2 yamt outcred->cr_uid = incred->cr_uid; 2959 1.143.2.2 yamt outcred->cr_gid = incred->cr_gid; 2960 1.143.2.2 yamt outcred->cr_ngroups = incred->cr_ngroups; 2961 1.143.2.2 yamt for (i = 0; i < incred->cr_ngroups; i++) 2962 1.143.2.2 yamt outcred->cr_groups[i] = incred->cr_groups[i]; 2963 1.143.2.2 yamt nfsrvw_sort(outcred->cr_groups, outcred->cr_ngroups); 2964 1.143.2.2 yamt } 2965 1.143.2.2 yamt 2966 1.143.2.2 yamt u_int32_t 2967 1.143.2.2 yamt nfs_getxid() 2968 1.143.2.2 yamt { 2969 1.143.2.2 yamt static u_int32_t base; 2970 1.143.2.2 yamt static u_int32_t nfs_xid = 0; 2971 1.143.2.2 yamt static struct simplelock nfs_xidlock = SIMPLELOCK_INITIALIZER; 2972 1.143.2.2 yamt u_int32_t newxid; 2973 1.143.2.2 yamt 2974 1.143.2.2 yamt simple_lock(&nfs_xidlock); 2975 1.143.2.2 yamt /* 2976 1.143.2.2 yamt * derive initial xid from system time 2977 1.143.2.2 yamt * XXX time is invalid if root not yet mounted 2978 1.143.2.2 yamt */ 2979 1.143.2.2 yamt if (__predict_false(!base && (rootvp))) { 2980 1.143.2.2 yamt struct timeval tv; 2981 1.143.2.2 yamt 2982 1.143.2.2 yamt microtime(&tv); 2983 1.143.2.2 yamt base = tv.tv_sec << 12; 2984 1.143.2.2 yamt nfs_xid = base; 2985 1.143.2.2 yamt } 2986 1.143.2.2 yamt 2987 1.143.2.2 yamt /* 2988 1.143.2.2 yamt * Skip zero xid if it should ever happen. 2989 1.143.2.2 yamt */ 2990 1.143.2.2 yamt if (__predict_false(++nfs_xid == 0)) 2991 1.143.2.2 yamt nfs_xid++; 2992 1.143.2.2 yamt newxid = nfs_xid; 2993 1.143.2.2 yamt simple_unlock(&nfs_xidlock); 2994 1.143.2.2 yamt 2995 1.143.2.2 yamt return txdr_unsigned(newxid); 2996 1.143.2.2 yamt } 2997 1.143.2.2 yamt 2998 1.143.2.2 yamt /* 2999 1.143.2.2 yamt * assign a new xid for existing request. 3000 1.143.2.2 yamt * used for NFSERR_JUKEBOX handling. 3001 1.143.2.2 yamt */ 3002 1.143.2.2 yamt void 3003 1.143.2.2 yamt nfs_renewxid(struct nfsreq *req) 3004 1.143.2.2 yamt { 3005 1.143.2.2 yamt u_int32_t xid; 3006 1.143.2.2 yamt int off; 3007 1.143.2.2 yamt 3008 1.143.2.2 yamt xid = nfs_getxid(); 3009 1.143.2.2 yamt if (req->r_nmp->nm_sotype == SOCK_STREAM) 3010 1.143.2.2 yamt off = sizeof(u_int32_t); /* RPC record mark */ 3011 1.143.2.2 yamt else 3012 1.143.2.2 yamt off = 0; 3013 1.143.2.2 yamt 3014 1.143.2.2 yamt m_copyback(req->r_mreq, off, sizeof(xid), (void *)&xid); 3015 1.143.2.2 yamt req->r_xid = xid; 3016 1.143.2.2 yamt } 3017
Indexes created Fri Oct 03 02:09:57 GMT 2025