nfs_subs.c revision 1.241
1 1.241 riastrad /* $NetBSD: nfs_subs.c,v 1.241 2020/09/05 16:30:12 riastradh Exp $ */ 2 1.14 cgd 3 1.1 cgd /* 4 1.12 mycroft * Copyright (c) 1989, 1993 5 1.12 mycroft * The Regents of the University of California. All rights reserved. 6 1.1 cgd * 7 1.1 cgd * This code is derived from software contributed to Berkeley by 8 1.1 cgd * Rick Macklem at The University of Guelph. 9 1.1 cgd * 10 1.1 cgd * Redistribution and use in source and binary forms, with or without 11 1.1 cgd * modification, are permitted provided that the following conditions 12 1.1 cgd * are met: 13 1.1 cgd * 1. Redistributions of source code must retain the above copyright 14 1.1 cgd * notice, this list of conditions and the following disclaimer. 15 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 16 1.1 cgd * notice, this list of conditions and the following disclaimer in the 17 1.1 cgd * documentation and/or other materials provided with the distribution. 18 1.127 agc * 3. Neither the name of the University nor the names of its contributors 19 1.1 cgd * may be used to endorse or promote products derived from this software 20 1.1 cgd * without specific prior written permission. 21 1.1 cgd * 22 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 1.1 cgd * SUCH DAMAGE. 33 1.1 cgd * 34 1.25 fvdl * @(#)nfs_subs.c 8.8 (Berkeley) 5/22/95 35 1.1 cgd */ 36 1.1 cgd 37 1.83 fvdl /* 38 1.83 fvdl * Copyright 2000 Wasabi Systems, Inc. 39 1.83 fvdl * All rights reserved. 40 1.83 fvdl * 41 1.83 fvdl * Written by Frank van der Linden for Wasabi Systems, Inc. 42 1.83 fvdl * 43 1.83 fvdl * Redistribution and use in source and binary forms, with or without 44 1.83 fvdl * modification, are permitted provided that the following conditions 45 1.83 fvdl * are met: 46 1.83 fvdl * 1. Redistributions of source code must retain the above copyright 47 1.83 fvdl * notice, this list of conditions and the following disclaimer. 48 1.83 fvdl * 2. Redistributions in binary form must reproduce the above copyright 49 1.83 fvdl * notice, this list of conditions and the following disclaimer in the 50 1.83 fvdl * documentation and/or other materials provided with the distribution. 51 1.83 fvdl * 3. All advertising materials mentioning features or use of this software 52 1.83 fvdl * must display the following acknowledgement: 53 1.83 fvdl * This product includes software developed for the NetBSD Project by 54 1.83 fvdl * Wasabi Systems, Inc. 55 1.83 fvdl * 4. The name of Wasabi Systems, Inc. may not be used to endorse 56 1.83 fvdl * or promote products derived from this software without specific prior 57 1.83 fvdl * written permission. 58 1.83 fvdl * 59 1.83 fvdl * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 60 1.83 fvdl * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 61 1.83 fvdl * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 62 1.83 fvdl * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 63 1.83 fvdl * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 64 1.83 fvdl * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 65 1.83 fvdl * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 66 1.83 fvdl * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 67 1.83 fvdl * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 68 1.83 fvdl * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 69 1.83 fvdl * POSSIBILITY OF SUCH DAMAGE. 70 1.83 fvdl */ 71 1.99 lukem 72 1.99 lukem #include <sys/cdefs.h> 73 1.241 riastrad __KERNEL_RCSID(0, "$NetBSD: nfs_subs.c,v 1.241 2020/09/05 16:30:12 riastradh Exp $"); 74 1.83 fvdl 75 1.210 ad #ifdef _KERNEL_OPT 76 1.82 bjh21 #include "opt_nfs.h" 77 1.210 ad #endif 78 1.25 fvdl 79 1.1 cgd /* 80 1.1 cgd * These functions support the macros and help fiddle mbuf chains for 81 1.1 cgd * the nfs op functions. They do things like create the rpc header and 82 1.1 cgd * copy data between mbuf chains and uio lists. 83 1.1 cgd */ 84 1.9 mycroft #include <sys/param.h> 85 1.9 mycroft #include <sys/proc.h> 86 1.9 mycroft #include <sys/systm.h> 87 1.9 mycroft #include <sys/kernel.h> 88 1.196 yamt #include <sys/kmem.h> 89 1.9 mycroft #include <sys/mount.h> 90 1.9 mycroft #include <sys/vnode.h> 91 1.9 mycroft #include <sys/namei.h> 92 1.9 mycroft #include <sys/mbuf.h> 93 1.12 mycroft #include <sys/socket.h> 94 1.12 mycroft #include <sys/stat.h> 95 1.98 fvdl #include <sys/filedesc.h> 96 1.30 fvdl #include <sys/time.h> 97 1.43 fvdl #include <sys/dirent.h> 98 1.155 thorpej #include <sys/once.h> 99 1.162 elad #include <sys/kauth.h> 100 1.207 pooka #include <sys/atomic.h> 101 1.222 tls #include <sys/cprng.h> 102 1.1 cgd 103 1.241 riastrad #include <uvm/uvm_page.h> 104 1.236 ad #include <uvm/uvm_page_array.h> 105 1.51 mrg 106 1.9 mycroft #include <nfs/rpcv2.h> 107 1.25 fvdl #include <nfs/nfsproto.h> 108 1.9 mycroft #include <nfs/nfsnode.h> 109 1.9 mycroft #include <nfs/nfs.h> 110 1.9 mycroft #include <nfs/xdr_subs.h> 111 1.9 mycroft #include <nfs/nfsm_subs.h> 112 1.12 mycroft #include <nfs/nfsmount.h> 113 1.12 mycroft #include <nfs/nfsrtt.h> 114 1.24 christos #include <nfs/nfs_var.h> 115 1.12 mycroft 116 1.12 mycroft #include <miscfs/specfs/specdev.h> 117 1.24 christos 118 1.12 mycroft #include <netinet/in.h> 119 1.1 cgd 120 1.207 pooka static u_int32_t nfs_xid; 121 1.207 pooka 122 1.218 christos int nuidhash_max = NFS_MAXUIDHASH; 123 1.1 cgd /* 124 1.1 cgd * Data items converted to xdr at startup, since they are constant 125 1.1 cgd * This is kinda hokey, but may save a little time doing byte swaps 126 1.1 cgd */ 127 1.22 cgd u_int32_t nfs_xdrneg1; 128 1.22 cgd u_int32_t rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 129 1.25 fvdl rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 130 1.12 mycroft rpc_auth_kerb; 131 1.179 yamt u_int32_t nfs_prog, nfs_true, nfs_false; 132 1.12 mycroft 133 1.1 cgd /* And other global data */ 134 1.90 jdolecek const nfstype nfsv2_type[9] = 135 1.90 jdolecek { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON, NFCHR, NFNON }; 136 1.90 jdolecek const nfstype nfsv3_type[9] = 137 1.90 jdolecek { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK, NFFIFO, NFNON }; 138 1.90 jdolecek const enum vtype nv2tov_type[8] = 139 1.90 jdolecek { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON }; 140 1.90 jdolecek const enum vtype nv3tov_type[8] = 141 1.90 jdolecek { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO }; 142 1.25 fvdl int nfs_ticks; 143 1.108 christos 144 1.35 thorpej /* NFS client/server stats. */ 145 1.35 thorpej struct nfsstats nfsstats; 146 1.35 thorpej 147 1.25 fvdl /* 148 1.25 fvdl * Mapping of old NFS Version 2 RPC numbers to generic numbers. 149 1.25 fvdl */ 150 1.90 jdolecek const int nfsv3_procid[NFS_NPROCS] = { 151 1.25 fvdl NFSPROC_NULL, 152 1.25 fvdl NFSPROC_GETATTR, 153 1.25 fvdl NFSPROC_SETATTR, 154 1.25 fvdl NFSPROC_NOOP, 155 1.25 fvdl NFSPROC_LOOKUP, 156 1.25 fvdl NFSPROC_READLINK, 157 1.25 fvdl NFSPROC_READ, 158 1.25 fvdl NFSPROC_NOOP, 159 1.25 fvdl NFSPROC_WRITE, 160 1.25 fvdl NFSPROC_CREATE, 161 1.25 fvdl NFSPROC_REMOVE, 162 1.25 fvdl NFSPROC_RENAME, 163 1.25 fvdl NFSPROC_LINK, 164 1.25 fvdl NFSPROC_SYMLINK, 165 1.25 fvdl NFSPROC_MKDIR, 166 1.25 fvdl NFSPROC_RMDIR, 167 1.25 fvdl NFSPROC_READDIR, 168 1.25 fvdl NFSPROC_FSSTAT, 169 1.25 fvdl NFSPROC_NOOP, 170 1.25 fvdl NFSPROC_NOOP, 171 1.25 fvdl NFSPROC_NOOP, 172 1.25 fvdl NFSPROC_NOOP, 173 1.25 fvdl NFSPROC_NOOP 174 1.25 fvdl }; 175 1.25 fvdl 176 1.25 fvdl /* 177 1.25 fvdl * and the reverse mapping from generic to Version 2 procedure numbers 178 1.25 fvdl */ 179 1.90 jdolecek const int nfsv2_procid[NFS_NPROCS] = { 180 1.25 fvdl NFSV2PROC_NULL, 181 1.25 fvdl NFSV2PROC_GETATTR, 182 1.25 fvdl NFSV2PROC_SETATTR, 183 1.25 fvdl NFSV2PROC_LOOKUP, 184 1.25 fvdl NFSV2PROC_NOOP, 185 1.25 fvdl NFSV2PROC_READLINK, 186 1.25 fvdl NFSV2PROC_READ, 187 1.25 fvdl NFSV2PROC_WRITE, 188 1.25 fvdl NFSV2PROC_CREATE, 189 1.25 fvdl NFSV2PROC_MKDIR, 190 1.25 fvdl NFSV2PROC_SYMLINK, 191 1.25 fvdl NFSV2PROC_CREATE, 192 1.25 fvdl NFSV2PROC_REMOVE, 193 1.25 fvdl NFSV2PROC_RMDIR, 194 1.25 fvdl NFSV2PROC_RENAME, 195 1.25 fvdl NFSV2PROC_LINK, 196 1.25 fvdl NFSV2PROC_READDIR, 197 1.25 fvdl NFSV2PROC_NOOP, 198 1.25 fvdl NFSV2PROC_STATFS, 199 1.25 fvdl NFSV2PROC_NOOP, 200 1.25 fvdl NFSV2PROC_NOOP, 201 1.25 fvdl NFSV2PROC_NOOP, 202 1.25 fvdl NFSV2PROC_NOOP, 203 1.25 fvdl }; 204 1.25 fvdl 205 1.25 fvdl /* 206 1.25 fvdl * Maps errno values to nfs error numbers. 207 1.25 fvdl * Use NFSERR_IO as the catch all for ones not specifically defined in 208 1.25 fvdl * RFC 1094. 209 1.25 fvdl */ 210 1.238 mgorny static const u_char nfsrv_v2errmap[] = { 211 1.25 fvdl NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 212 1.25 fvdl NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 213 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 214 1.25 fvdl NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 215 1.25 fvdl NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 216 1.25 fvdl NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 217 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 218 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 219 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 220 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 221 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 222 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 223 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 224 1.25 fvdl NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 225 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 226 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 227 1.238 mgorny NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 228 1.238 mgorny NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 229 1.238 mgorny NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 230 1.238 mgorny NFSERR_IO, NFSERR_IO, NFSERR_IO 231 1.25 fvdl }; 232 1.238 mgorny __CTASSERT(__arraycount(nfsrv_v2errmap) == ELAST); 233 1.25 fvdl 234 1.25 fvdl /* 235 1.25 fvdl * Maps errno values to nfs error numbers. 236 1.25 fvdl * Although it is not obvious whether or not NFS clients really care if 237 1.25 fvdl * a returned error value is in the specified list for the procedure, the 238 1.25 fvdl * safest thing to do is filter them appropriately. For Version 2, the 239 1.25 fvdl * X/Open XNFS document is the only specification that defines error values 240 1.25 fvdl * for each RPC (The RFC simply lists all possible error values for all RPCs), 241 1.25 fvdl * so I have decided to not do this for Version 2. 242 1.25 fvdl * The first entry is the default error return and the rest are the valid 243 1.25 fvdl * errors for that RPC in increasing numeric order. 244 1.25 fvdl */ 245 1.90 jdolecek static const short nfsv3err_null[] = { 246 1.25 fvdl 0, 247 1.25 fvdl 0, 248 1.25 fvdl }; 249 1.25 fvdl 250 1.90 jdolecek static const short nfsv3err_getattr[] = { 251 1.25 fvdl NFSERR_IO, 252 1.25 fvdl NFSERR_IO, 253 1.25 fvdl NFSERR_STALE, 254 1.25 fvdl NFSERR_BADHANDLE, 255 1.25 fvdl NFSERR_SERVERFAULT, 256 1.25 fvdl 0, 257 1.25 fvdl }; 258 1.25 fvdl 259 1.90 jdolecek static const short nfsv3err_setattr[] = { 260 1.25 fvdl NFSERR_IO, 261 1.25 fvdl NFSERR_PERM, 262 1.25 fvdl NFSERR_IO, 263 1.25 fvdl NFSERR_ACCES, 264 1.25 fvdl NFSERR_INVAL, 265 1.25 fvdl NFSERR_NOSPC, 266 1.25 fvdl NFSERR_ROFS, 267 1.25 fvdl NFSERR_DQUOT, 268 1.25 fvdl NFSERR_STALE, 269 1.25 fvdl NFSERR_BADHANDLE, 270 1.25 fvdl NFSERR_NOT_SYNC, 271 1.25 fvdl NFSERR_SERVERFAULT, 272 1.25 fvdl 0, 273 1.25 fvdl }; 274 1.25 fvdl 275 1.90 jdolecek static const short nfsv3err_lookup[] = { 276 1.25 fvdl NFSERR_IO, 277 1.25 fvdl NFSERR_NOENT, 278 1.25 fvdl NFSERR_IO, 279 1.25 fvdl NFSERR_ACCES, 280 1.25 fvdl NFSERR_NOTDIR, 281 1.25 fvdl NFSERR_NAMETOL, 282 1.25 fvdl NFSERR_STALE, 283 1.25 fvdl NFSERR_BADHANDLE, 284 1.25 fvdl NFSERR_SERVERFAULT, 285 1.25 fvdl 0, 286 1.25 fvdl }; 287 1.25 fvdl 288 1.90 jdolecek static const short nfsv3err_access[] = { 289 1.25 fvdl NFSERR_IO, 290 1.25 fvdl NFSERR_IO, 291 1.25 fvdl NFSERR_STALE, 292 1.25 fvdl NFSERR_BADHANDLE, 293 1.25 fvdl NFSERR_SERVERFAULT, 294 1.25 fvdl 0, 295 1.25 fvdl }; 296 1.25 fvdl 297 1.90 jdolecek static const short nfsv3err_readlink[] = { 298 1.25 fvdl NFSERR_IO, 299 1.25 fvdl NFSERR_IO, 300 1.25 fvdl NFSERR_ACCES, 301 1.25 fvdl NFSERR_INVAL, 302 1.25 fvdl NFSERR_STALE, 303 1.25 fvdl NFSERR_BADHANDLE, 304 1.25 fvdl NFSERR_NOTSUPP, 305 1.25 fvdl NFSERR_SERVERFAULT, 306 1.25 fvdl 0, 307 1.25 fvdl }; 308 1.25 fvdl 309 1.90 jdolecek static const short nfsv3err_read[] = { 310 1.25 fvdl NFSERR_IO, 311 1.25 fvdl NFSERR_IO, 312 1.25 fvdl NFSERR_NXIO, 313 1.25 fvdl NFSERR_ACCES, 314 1.25 fvdl NFSERR_INVAL, 315 1.25 fvdl NFSERR_STALE, 316 1.25 fvdl NFSERR_BADHANDLE, 317 1.25 fvdl NFSERR_SERVERFAULT, 318 1.67 fvdl NFSERR_JUKEBOX, 319 1.25 fvdl 0, 320 1.25 fvdl }; 321 1.25 fvdl 322 1.90 jdolecek static const short nfsv3err_write[] = { 323 1.25 fvdl NFSERR_IO, 324 1.25 fvdl NFSERR_IO, 325 1.25 fvdl NFSERR_ACCES, 326 1.25 fvdl NFSERR_INVAL, 327 1.25 fvdl NFSERR_FBIG, 328 1.25 fvdl NFSERR_NOSPC, 329 1.25 fvdl NFSERR_ROFS, 330 1.25 fvdl NFSERR_DQUOT, 331 1.25 fvdl NFSERR_STALE, 332 1.25 fvdl NFSERR_BADHANDLE, 333 1.25 fvdl NFSERR_SERVERFAULT, 334 1.68 fvdl NFSERR_JUKEBOX, 335 1.25 fvdl 0, 336 1.25 fvdl }; 337 1.25 fvdl 338 1.90 jdolecek static const short nfsv3err_create[] = { 339 1.25 fvdl NFSERR_IO, 340 1.25 fvdl NFSERR_IO, 341 1.25 fvdl NFSERR_ACCES, 342 1.25 fvdl NFSERR_EXIST, 343 1.25 fvdl NFSERR_NOTDIR, 344 1.25 fvdl NFSERR_NOSPC, 345 1.25 fvdl NFSERR_ROFS, 346 1.25 fvdl NFSERR_NAMETOL, 347 1.25 fvdl NFSERR_DQUOT, 348 1.25 fvdl NFSERR_STALE, 349 1.25 fvdl NFSERR_BADHANDLE, 350 1.25 fvdl NFSERR_NOTSUPP, 351 1.25 fvdl NFSERR_SERVERFAULT, 352 1.25 fvdl 0, 353 1.25 fvdl }; 354 1.25 fvdl 355 1.90 jdolecek static const short nfsv3err_mkdir[] = { 356 1.25 fvdl NFSERR_IO, 357 1.25 fvdl NFSERR_IO, 358 1.25 fvdl NFSERR_ACCES, 359 1.25 fvdl NFSERR_EXIST, 360 1.25 fvdl NFSERR_NOTDIR, 361 1.25 fvdl NFSERR_NOSPC, 362 1.25 fvdl NFSERR_ROFS, 363 1.25 fvdl NFSERR_NAMETOL, 364 1.25 fvdl NFSERR_DQUOT, 365 1.25 fvdl NFSERR_STALE, 366 1.25 fvdl NFSERR_BADHANDLE, 367 1.25 fvdl NFSERR_NOTSUPP, 368 1.25 fvdl NFSERR_SERVERFAULT, 369 1.25 fvdl 0, 370 1.25 fvdl }; 371 1.25 fvdl 372 1.90 jdolecek static const short nfsv3err_symlink[] = { 373 1.25 fvdl NFSERR_IO, 374 1.25 fvdl NFSERR_IO, 375 1.25 fvdl NFSERR_ACCES, 376 1.25 fvdl NFSERR_EXIST, 377 1.25 fvdl NFSERR_NOTDIR, 378 1.25 fvdl NFSERR_NOSPC, 379 1.25 fvdl NFSERR_ROFS, 380 1.25 fvdl NFSERR_NAMETOL, 381 1.25 fvdl NFSERR_DQUOT, 382 1.25 fvdl NFSERR_STALE, 383 1.25 fvdl NFSERR_BADHANDLE, 384 1.25 fvdl NFSERR_NOTSUPP, 385 1.25 fvdl NFSERR_SERVERFAULT, 386 1.25 fvdl 0, 387 1.25 fvdl }; 388 1.25 fvdl 389 1.90 jdolecek static const short nfsv3err_mknod[] = { 390 1.25 fvdl NFSERR_IO, 391 1.25 fvdl NFSERR_IO, 392 1.25 fvdl NFSERR_ACCES, 393 1.25 fvdl NFSERR_EXIST, 394 1.25 fvdl NFSERR_NOTDIR, 395 1.25 fvdl NFSERR_NOSPC, 396 1.25 fvdl NFSERR_ROFS, 397 1.25 fvdl NFSERR_NAMETOL, 398 1.25 fvdl NFSERR_DQUOT, 399 1.25 fvdl NFSERR_STALE, 400 1.25 fvdl NFSERR_BADHANDLE, 401 1.25 fvdl NFSERR_NOTSUPP, 402 1.25 fvdl NFSERR_SERVERFAULT, 403 1.25 fvdl NFSERR_BADTYPE, 404 1.25 fvdl 0, 405 1.25 fvdl }; 406 1.25 fvdl 407 1.90 jdolecek static const short nfsv3err_remove[] = { 408 1.25 fvdl NFSERR_IO, 409 1.25 fvdl NFSERR_NOENT, 410 1.25 fvdl NFSERR_IO, 411 1.25 fvdl NFSERR_ACCES, 412 1.25 fvdl NFSERR_NOTDIR, 413 1.25 fvdl NFSERR_ROFS, 414 1.25 fvdl NFSERR_NAMETOL, 415 1.25 fvdl NFSERR_STALE, 416 1.25 fvdl NFSERR_BADHANDLE, 417 1.25 fvdl NFSERR_SERVERFAULT, 418 1.25 fvdl 0, 419 1.25 fvdl }; 420 1.25 fvdl 421 1.90 jdolecek static const short nfsv3err_rmdir[] = { 422 1.25 fvdl NFSERR_IO, 423 1.25 fvdl NFSERR_NOENT, 424 1.25 fvdl NFSERR_IO, 425 1.25 fvdl NFSERR_ACCES, 426 1.25 fvdl NFSERR_EXIST, 427 1.25 fvdl NFSERR_NOTDIR, 428 1.25 fvdl NFSERR_INVAL, 429 1.25 fvdl NFSERR_ROFS, 430 1.25 fvdl NFSERR_NAMETOL, 431 1.25 fvdl NFSERR_NOTEMPTY, 432 1.25 fvdl NFSERR_STALE, 433 1.25 fvdl NFSERR_BADHANDLE, 434 1.25 fvdl NFSERR_NOTSUPP, 435 1.25 fvdl NFSERR_SERVERFAULT, 436 1.25 fvdl 0, 437 1.25 fvdl }; 438 1.25 fvdl 439 1.90 jdolecek static const short nfsv3err_rename[] = { 440 1.25 fvdl NFSERR_IO, 441 1.25 fvdl NFSERR_NOENT, 442 1.25 fvdl NFSERR_IO, 443 1.25 fvdl NFSERR_ACCES, 444 1.25 fvdl NFSERR_EXIST, 445 1.25 fvdl NFSERR_XDEV, 446 1.25 fvdl NFSERR_NOTDIR, 447 1.25 fvdl NFSERR_ISDIR, 448 1.25 fvdl NFSERR_INVAL, 449 1.25 fvdl NFSERR_NOSPC, 450 1.25 fvdl NFSERR_ROFS, 451 1.25 fvdl NFSERR_MLINK, 452 1.25 fvdl NFSERR_NAMETOL, 453 1.25 fvdl NFSERR_NOTEMPTY, 454 1.25 fvdl NFSERR_DQUOT, 455 1.25 fvdl NFSERR_STALE, 456 1.25 fvdl NFSERR_BADHANDLE, 457 1.25 fvdl NFSERR_NOTSUPP, 458 1.25 fvdl NFSERR_SERVERFAULT, 459 1.25 fvdl 0, 460 1.25 fvdl }; 461 1.25 fvdl 462 1.90 jdolecek static const short nfsv3err_link[] = { 463 1.25 fvdl NFSERR_IO, 464 1.25 fvdl NFSERR_IO, 465 1.25 fvdl NFSERR_ACCES, 466 1.25 fvdl NFSERR_EXIST, 467 1.25 fvdl NFSERR_XDEV, 468 1.25 fvdl NFSERR_NOTDIR, 469 1.25 fvdl NFSERR_INVAL, 470 1.25 fvdl NFSERR_NOSPC, 471 1.25 fvdl NFSERR_ROFS, 472 1.25 fvdl NFSERR_MLINK, 473 1.25 fvdl NFSERR_NAMETOL, 474 1.25 fvdl NFSERR_DQUOT, 475 1.25 fvdl NFSERR_STALE, 476 1.25 fvdl NFSERR_BADHANDLE, 477 1.25 fvdl NFSERR_NOTSUPP, 478 1.25 fvdl NFSERR_SERVERFAULT, 479 1.25 fvdl 0, 480 1.25 fvdl }; 481 1.25 fvdl 482 1.90 jdolecek static const short nfsv3err_readdir[] = { 483 1.25 fvdl NFSERR_IO, 484 1.25 fvdl NFSERR_IO, 485 1.25 fvdl NFSERR_ACCES, 486 1.25 fvdl NFSERR_NOTDIR, 487 1.25 fvdl NFSERR_STALE, 488 1.25 fvdl NFSERR_BADHANDLE, 489 1.25 fvdl NFSERR_BAD_COOKIE, 490 1.25 fvdl NFSERR_TOOSMALL, 491 1.25 fvdl NFSERR_SERVERFAULT, 492 1.25 fvdl 0, 493 1.25 fvdl }; 494 1.25 fvdl 495 1.90 jdolecek static const short nfsv3err_readdirplus[] = { 496 1.25 fvdl NFSERR_IO, 497 1.25 fvdl NFSERR_IO, 498 1.25 fvdl NFSERR_ACCES, 499 1.25 fvdl NFSERR_NOTDIR, 500 1.25 fvdl NFSERR_STALE, 501 1.25 fvdl NFSERR_BADHANDLE, 502 1.25 fvdl NFSERR_BAD_COOKIE, 503 1.25 fvdl NFSERR_NOTSUPP, 504 1.25 fvdl NFSERR_TOOSMALL, 505 1.25 fvdl NFSERR_SERVERFAULT, 506 1.25 fvdl 0, 507 1.25 fvdl }; 508 1.25 fvdl 509 1.90 jdolecek static const short nfsv3err_fsstat[] = { 510 1.25 fvdl NFSERR_IO, 511 1.25 fvdl NFSERR_IO, 512 1.25 fvdl NFSERR_STALE, 513 1.25 fvdl NFSERR_BADHANDLE, 514 1.25 fvdl NFSERR_SERVERFAULT, 515 1.25 fvdl 0, 516 1.25 fvdl }; 517 1.25 fvdl 518 1.90 jdolecek static const short nfsv3err_fsinfo[] = { 519 1.25 fvdl NFSERR_STALE, 520 1.25 fvdl NFSERR_STALE, 521 1.25 fvdl NFSERR_BADHANDLE, 522 1.25 fvdl NFSERR_SERVERFAULT, 523 1.25 fvdl 0, 524 1.25 fvdl }; 525 1.25 fvdl 526 1.90 jdolecek static const short nfsv3err_pathconf[] = { 527 1.25 fvdl NFSERR_STALE, 528 1.25 fvdl NFSERR_STALE, 529 1.25 fvdl NFSERR_BADHANDLE, 530 1.25 fvdl NFSERR_SERVERFAULT, 531 1.25 fvdl 0, 532 1.25 fvdl }; 533 1.25 fvdl 534 1.90 jdolecek static const short nfsv3err_commit[] = { 535 1.25 fvdl NFSERR_IO, 536 1.25 fvdl NFSERR_IO, 537 1.25 fvdl NFSERR_STALE, 538 1.25 fvdl NFSERR_BADHANDLE, 539 1.25 fvdl NFSERR_SERVERFAULT, 540 1.25 fvdl 0, 541 1.25 fvdl }; 542 1.25 fvdl 543 1.90 jdolecek static const short * const nfsrv_v3errmap[] = { 544 1.25 fvdl nfsv3err_null, 545 1.25 fvdl nfsv3err_getattr, 546 1.25 fvdl nfsv3err_setattr, 547 1.25 fvdl nfsv3err_lookup, 548 1.25 fvdl nfsv3err_access, 549 1.25 fvdl nfsv3err_readlink, 550 1.25 fvdl nfsv3err_read, 551 1.25 fvdl nfsv3err_write, 552 1.25 fvdl nfsv3err_create, 553 1.25 fvdl nfsv3err_mkdir, 554 1.25 fvdl nfsv3err_symlink, 555 1.25 fvdl nfsv3err_mknod, 556 1.25 fvdl nfsv3err_remove, 557 1.25 fvdl nfsv3err_rmdir, 558 1.25 fvdl nfsv3err_rename, 559 1.25 fvdl nfsv3err_link, 560 1.25 fvdl nfsv3err_readdir, 561 1.25 fvdl nfsv3err_readdirplus, 562 1.25 fvdl nfsv3err_fsstat, 563 1.25 fvdl nfsv3err_fsinfo, 564 1.25 fvdl nfsv3err_pathconf, 565 1.25 fvdl nfsv3err_commit, 566 1.25 fvdl }; 567 1.25 fvdl 568 1.12 mycroft extern struct nfsrtt nfsrtt; 569 1.1 cgd 570 1.46 fvdl u_long nfsdirhashmask; 571 1.18 mycroft 572 1.213 dsl int nfs_webnamei(struct nameidata *, struct vnode *, struct proc *); 573 1.43 fvdl 574 1.1 cgd /* 575 1.1 cgd * Create the header for an rpc request packet 576 1.1 cgd * The hsiz is the size of the rest of the nfs request header. 577 1.1 cgd * (just used to decide if a cluster is a good idea) 578 1.1 cgd */ 579 1.12 mycroft struct mbuf * 580 1.183 christos nfsm_reqh(struct nfsnode *np, u_long procid, int hsiz, char **bposp) 581 1.12 mycroft { 582 1.75 augustss struct mbuf *mb; 583 1.183 christos char *bpos; 584 1.12 mycroft 585 1.109 matt mb = m_get(M_WAIT, MT_DATA); 586 1.109 matt MCLAIM(mb, &nfs_mowner); 587 1.12 mycroft if (hsiz >= MINCLSIZE) 588 1.109 matt m_clget(mb, M_WAIT); 589 1.12 mycroft mb->m_len = 0; 590 1.183 christos bpos = mtod(mb, void *); 591 1.148 perry 592 1.12 mycroft /* Finally, return values */ 593 1.12 mycroft *bposp = bpos; 594 1.12 mycroft return (mb); 595 1.12 mycroft } 596 1.12 mycroft 597 1.12 mycroft /* 598 1.12 mycroft * Build the RPC header and fill in the authorization info. 599 1.12 mycroft * The authorization string argument is only used when the credentials 600 1.12 mycroft * come from outside of the kernel. 601 1.12 mycroft * Returns the head of the mbuf list. 602 1.12 mycroft */ 603 1.12 mycroft struct mbuf * 604 1.216 cegger nfsm_rpchead(kauth_cred_t cr, int nmflag, int procid, 605 1.216 cegger int auth_type, int auth_len, char *auth_str, int verf_len, 606 1.216 cegger char *verf_str, struct mbuf *mrest, int mrest_len, 607 1.216 cegger struct mbuf **mbp, uint32_t *xidp) 608 1.1 cgd { 609 1.75 augustss struct mbuf *mb; 610 1.75 augustss u_int32_t *tl; 611 1.183 christos char *bpos; 612 1.75 augustss int i; 613 1.109 matt struct mbuf *mreq; 614 1.12 mycroft int siz, grpsiz, authsiz; 615 1.1 cgd 616 1.12 mycroft authsiz = nfsm_rndup(auth_len); 617 1.109 matt mb = m_gethdr(M_WAIT, MT_DATA); 618 1.109 matt MCLAIM(mb, &nfs_mowner); 619 1.25 fvdl if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 620 1.109 matt m_clget(mb, M_WAIT); 621 1.25 fvdl } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 622 1.235 maxv m_align(mb, authsiz + 10 * NFSX_UNSIGNED); 623 1.12 mycroft } else { 624 1.235 maxv m_align(mb, 8 * NFSX_UNSIGNED); 625 1.1 cgd } 626 1.12 mycroft mb->m_len = 0; 627 1.12 mycroft mreq = mb; 628 1.183 christos bpos = mtod(mb, void *); 629 1.12 mycroft 630 1.12 mycroft /* 631 1.12 mycroft * First the RPC header. 632 1.12 mycroft */ 633 1.25 fvdl nfsm_build(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 634 1.30 fvdl 635 1.126 yamt *tl++ = *xidp = nfs_getxid(); 636 1.1 cgd *tl++ = rpc_call; 637 1.1 cgd *tl++ = rpc_vers; 638 1.179 yamt *tl++ = txdr_unsigned(NFS_PROG); 639 1.179 yamt if (nmflag & NFSMNT_NFSV3) 640 1.179 yamt *tl++ = txdr_unsigned(NFS_VER3); 641 1.179 yamt else 642 1.179 yamt *tl++ = txdr_unsigned(NFS_VER2); 643 1.25 fvdl if (nmflag & NFSMNT_NFSV3) 644 1.25 fvdl *tl++ = txdr_unsigned(procid); 645 1.25 fvdl else 646 1.25 fvdl *tl++ = txdr_unsigned(nfsv2_procid[procid]); 647 1.12 mycroft 648 1.12 mycroft /* 649 1.12 mycroft * And then the authorization cred. 650 1.12 mycroft */ 651 1.12 mycroft *tl++ = txdr_unsigned(auth_type); 652 1.12 mycroft *tl = txdr_unsigned(authsiz); 653 1.12 mycroft switch (auth_type) { 654 1.12 mycroft case RPCAUTH_UNIX: 655 1.22 cgd nfsm_build(tl, u_int32_t *, auth_len); 656 1.12 mycroft *tl++ = 0; /* stamp ?? */ 657 1.12 mycroft *tl++ = 0; /* NULL hostname */ 658 1.162 elad *tl++ = txdr_unsigned(kauth_cred_geteuid(cr)); 659 1.162 elad *tl++ = txdr_unsigned(kauth_cred_getegid(cr)); 660 1.12 mycroft grpsiz = (auth_len >> 2) - 5; 661 1.12 mycroft *tl++ = txdr_unsigned(grpsiz); 662 1.20 mycroft for (i = 0; i < grpsiz; i++) 663 1.162 elad *tl++ = txdr_unsigned(kauth_cred_group(cr, i)); /* XXX elad review */ 664 1.12 mycroft break; 665 1.25 fvdl case RPCAUTH_KERB4: 666 1.12 mycroft siz = auth_len; 667 1.12 mycroft while (siz > 0) { 668 1.12 mycroft if (M_TRAILINGSPACE(mb) == 0) { 669 1.109 matt struct mbuf *mb2; 670 1.109 matt mb2 = m_get(M_WAIT, MT_DATA); 671 1.109 matt MCLAIM(mb2, &nfs_mowner); 672 1.12 mycroft if (siz >= MINCLSIZE) 673 1.109 matt m_clget(mb2, M_WAIT); 674 1.12 mycroft mb->m_next = mb2; 675 1.12 mycroft mb = mb2; 676 1.12 mycroft mb->m_len = 0; 677 1.183 christos bpos = mtod(mb, void *); 678 1.12 mycroft } 679 1.233 riastrad i = uimin(siz, M_TRAILINGSPACE(mb)); 680 1.63 perry memcpy(bpos, auth_str, i); 681 1.12 mycroft mb->m_len += i; 682 1.12 mycroft auth_str += i; 683 1.12 mycroft bpos += i; 684 1.12 mycroft siz -= i; 685 1.12 mycroft } 686 1.12 mycroft if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 687 1.12 mycroft for (i = 0; i < siz; i++) 688 1.12 mycroft *bpos++ = '\0'; 689 1.12 mycroft mb->m_len += siz; 690 1.12 mycroft } 691 1.12 mycroft break; 692 1.12 mycroft }; 693 1.25 fvdl 694 1.25 fvdl /* 695 1.25 fvdl * And the verifier... 696 1.25 fvdl */ 697 1.25 fvdl nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 698 1.25 fvdl if (verf_str) { 699 1.25 fvdl *tl++ = txdr_unsigned(RPCAUTH_KERB4); 700 1.25 fvdl *tl = txdr_unsigned(verf_len); 701 1.25 fvdl siz = verf_len; 702 1.25 fvdl while (siz > 0) { 703 1.25 fvdl if (M_TRAILINGSPACE(mb) == 0) { 704 1.109 matt struct mbuf *mb2; 705 1.109 matt mb2 = m_get(M_WAIT, MT_DATA); 706 1.109 matt MCLAIM(mb2, &nfs_mowner); 707 1.25 fvdl if (siz >= MINCLSIZE) 708 1.109 matt m_clget(mb2, M_WAIT); 709 1.25 fvdl mb->m_next = mb2; 710 1.25 fvdl mb = mb2; 711 1.25 fvdl mb->m_len = 0; 712 1.183 christos bpos = mtod(mb, void *); 713 1.25 fvdl } 714 1.233 riastrad i = uimin(siz, M_TRAILINGSPACE(mb)); 715 1.63 perry memcpy(bpos, verf_str, i); 716 1.25 fvdl mb->m_len += i; 717 1.25 fvdl verf_str += i; 718 1.25 fvdl bpos += i; 719 1.25 fvdl siz -= i; 720 1.25 fvdl } 721 1.25 fvdl if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 722 1.25 fvdl for (i = 0; i < siz; i++) 723 1.25 fvdl *bpos++ = '\0'; 724 1.25 fvdl mb->m_len += siz; 725 1.25 fvdl } 726 1.25 fvdl } else { 727 1.25 fvdl *tl++ = txdr_unsigned(RPCAUTH_NULL); 728 1.25 fvdl *tl = 0; 729 1.25 fvdl } 730 1.12 mycroft mb->m_next = mrest; 731 1.25 fvdl mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 732 1.228 ozaki m_reset_rcvif(mreq); 733 1.12 mycroft *mbp = mb; 734 1.1 cgd return (mreq); 735 1.1 cgd } 736 1.1 cgd 737 1.1 cgd /* 738 1.1 cgd * copies mbuf chain to the uio scatter/gather list 739 1.1 cgd */ 740 1.24 christos int 741 1.214 dsl nfsm_mbuftouio(struct mbuf **mrep, struct uio *uiop, int siz, char **dpos) 742 1.1 cgd { 743 1.75 augustss char *mbufcp, *uiocp; 744 1.75 augustss int xfer, left, len; 745 1.75 augustss struct mbuf *mp; 746 1.1 cgd long uiosiz, rem; 747 1.1 cgd int error = 0; 748 1.1 cgd 749 1.1 cgd mp = *mrep; 750 1.1 cgd mbufcp = *dpos; 751 1.183 christos len = mtod(mp, char *) + mp->m_len - mbufcp; 752 1.1 cgd rem = nfsm_rndup(siz)-siz; 753 1.1 cgd while (siz > 0) { 754 1.1 cgd if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 755 1.1 cgd return (EFBIG); 756 1.1 cgd left = uiop->uio_iov->iov_len; 757 1.1 cgd uiocp = uiop->uio_iov->iov_base; 758 1.1 cgd if (left > siz) 759 1.1 cgd left = siz; 760 1.1 cgd uiosiz = left; 761 1.1 cgd while (left > 0) { 762 1.1 cgd while (len == 0) { 763 1.1 cgd mp = mp->m_next; 764 1.1 cgd if (mp == NULL) 765 1.1 cgd return (EBADRPC); 766 1.183 christos mbufcp = mtod(mp, void *); 767 1.1 cgd len = mp->m_len; 768 1.1 cgd } 769 1.1 cgd xfer = (left > len) ? len : left; 770 1.158 yamt error = copyout_vmspace(uiop->uio_vmspace, mbufcp, 771 1.158 yamt uiocp, xfer); 772 1.158 yamt if (error) { 773 1.158 yamt return error; 774 1.158 yamt } 775 1.1 cgd left -= xfer; 776 1.1 cgd len -= xfer; 777 1.1 cgd mbufcp += xfer; 778 1.1 cgd uiocp += xfer; 779 1.1 cgd uiop->uio_offset += xfer; 780 1.1 cgd uiop->uio_resid -= xfer; 781 1.1 cgd } 782 1.1 cgd if (uiop->uio_iov->iov_len <= siz) { 783 1.1 cgd uiop->uio_iovcnt--; 784 1.1 cgd uiop->uio_iov++; 785 1.1 cgd } else { 786 1.95 lukem uiop->uio_iov->iov_base = 787 1.183 christos (char *)uiop->uio_iov->iov_base + uiosiz; 788 1.1 cgd uiop->uio_iov->iov_len -= uiosiz; 789 1.1 cgd } 790 1.1 cgd siz -= uiosiz; 791 1.1 cgd } 792 1.1 cgd *dpos = mbufcp; 793 1.1 cgd *mrep = mp; 794 1.1 cgd if (rem > 0) { 795 1.1 cgd if (len < rem) 796 1.1 cgd error = nfs_adv(mrep, dpos, rem, len); 797 1.1 cgd else 798 1.1 cgd *dpos += rem; 799 1.1 cgd } 800 1.1 cgd return (error); 801 1.1 cgd } 802 1.1 cgd 803 1.1 cgd /* 804 1.29 fvdl * copies a uio scatter/gather list to an mbuf chain. 805 1.29 fvdl * NOTE: can ony handle iovcnt == 1 806 1.1 cgd */ 807 1.24 christos int 808 1.214 dsl nfsm_uiotombuf(struct uio *uiop, struct mbuf **mq, int siz, char **bpos) 809 1.1 cgd { 810 1.75 augustss char *uiocp; 811 1.75 augustss struct mbuf *mp, *mp2; 812 1.75 augustss int xfer, left, mlen; 813 1.1 cgd int uiosiz, clflg, rem; 814 1.1 cgd char *cp; 815 1.158 yamt int error; 816 1.1 cgd 817 1.29 fvdl #ifdef DIAGNOSTIC 818 1.29 fvdl if (uiop->uio_iovcnt != 1) 819 1.29 fvdl panic("nfsm_uiotombuf: iovcnt != 1"); 820 1.29 fvdl #endif 821 1.29 fvdl 822 1.1 cgd if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 823 1.1 cgd clflg = 1; 824 1.1 cgd else 825 1.1 cgd clflg = 0; 826 1.1 cgd rem = nfsm_rndup(siz)-siz; 827 1.12 mycroft mp = mp2 = *mq; 828 1.1 cgd while (siz > 0) { 829 1.1 cgd left = uiop->uio_iov->iov_len; 830 1.1 cgd uiocp = uiop->uio_iov->iov_base; 831 1.1 cgd if (left > siz) 832 1.1 cgd left = siz; 833 1.1 cgd uiosiz = left; 834 1.1 cgd while (left > 0) { 835 1.12 mycroft mlen = M_TRAILINGSPACE(mp); 836 1.12 mycroft if (mlen == 0) { 837 1.109 matt mp = m_get(M_WAIT, MT_DATA); 838 1.109 matt MCLAIM(mp, &nfs_mowner); 839 1.12 mycroft if (clflg) 840 1.109 matt m_clget(mp, M_WAIT); 841 1.12 mycroft mp->m_len = 0; 842 1.12 mycroft mp2->m_next = mp; 843 1.12 mycroft mp2 = mp; 844 1.12 mycroft mlen = M_TRAILINGSPACE(mp); 845 1.12 mycroft } 846 1.12 mycroft xfer = (left > mlen) ? mlen : left; 847 1.183 christos cp = mtod(mp, char *) + mp->m_len; 848 1.158 yamt error = copyin_vmspace(uiop->uio_vmspace, uiocp, cp, 849 1.158 yamt xfer); 850 1.158 yamt if (error) { 851 1.158 yamt /* XXX */ 852 1.158 yamt } 853 1.12 mycroft mp->m_len += xfer; 854 1.1 cgd left -= xfer; 855 1.1 cgd uiocp += xfer; 856 1.1 cgd uiop->uio_offset += xfer; 857 1.1 cgd uiop->uio_resid -= xfer; 858 1.1 cgd } 859 1.183 christos uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 860 1.95 lukem uiosiz; 861 1.29 fvdl uiop->uio_iov->iov_len -= uiosiz; 862 1.1 cgd siz -= uiosiz; 863 1.1 cgd } 864 1.1 cgd if (rem > 0) { 865 1.12 mycroft if (rem > M_TRAILINGSPACE(mp)) { 866 1.109 matt mp = m_get(M_WAIT, MT_DATA); 867 1.109 matt MCLAIM(mp, &nfs_mowner); 868 1.1 cgd mp->m_len = 0; 869 1.1 cgd mp2->m_next = mp; 870 1.1 cgd } 871 1.183 christos cp = mtod(mp, char *) + mp->m_len; 872 1.1 cgd for (left = 0; left < rem; left++) 873 1.1 cgd *cp++ = '\0'; 874 1.1 cgd mp->m_len += rem; 875 1.1 cgd *bpos = cp; 876 1.1 cgd } else 877 1.183 christos *bpos = mtod(mp, char *) + mp->m_len; 878 1.1 cgd *mq = mp; 879 1.1 cgd return (0); 880 1.1 cgd } 881 1.1 cgd 882 1.1 cgd /* 883 1.39 fvdl * Get at least "siz" bytes of correctly aligned data. 884 1.39 fvdl * When called the mbuf pointers are not necessarily correct, 885 1.39 fvdl * dsosp points to what ought to be in m_data and left contains 886 1.148 perry * what ought to be in m_len. 887 1.12 mycroft * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 888 1.1 cgd * cases. (The macros use the vars. dpos and dpos2) 889 1.1 cgd */ 890 1.24 christos int 891 1.214 dsl nfsm_disct(struct mbuf **mdp, char **dposp, int siz, int left, char **cp2) 892 1.1 cgd { 893 1.75 augustss struct mbuf *m1, *m2; 894 1.39 fvdl struct mbuf *havebuf = NULL; 895 1.183 christos char *src = *dposp; 896 1.183 christos char *dst; 897 1.39 fvdl int len; 898 1.39 fvdl 899 1.39 fvdl #ifdef DEBUG 900 1.39 fvdl if (left < 0) 901 1.148 perry panic("nfsm_disct: left < 0"); 902 1.39 fvdl #endif 903 1.39 fvdl m1 = *mdp; 904 1.39 fvdl /* 905 1.39 fvdl * Skip through the mbuf chain looking for an mbuf with 906 1.39 fvdl * some data. If the first mbuf found has enough data 907 1.39 fvdl * and it is correctly aligned return it. 908 1.39 fvdl */ 909 1.1 cgd while (left == 0) { 910 1.39 fvdl havebuf = m1; 911 1.39 fvdl *mdp = m1 = m1->m_next; 912 1.39 fvdl if (m1 == NULL) 913 1.1 cgd return (EBADRPC); 914 1.183 christos src = mtod(m1, void *); 915 1.39 fvdl left = m1->m_len; 916 1.39 fvdl /* 917 1.39 fvdl * If we start a new mbuf and it is big enough 918 1.39 fvdl * and correctly aligned just return it, don't 919 1.39 fvdl * do any pull up. 920 1.39 fvdl */ 921 1.39 fvdl if (left >= siz && nfsm_aligned(src)) { 922 1.39 fvdl *cp2 = src; 923 1.39 fvdl *dposp = src + siz; 924 1.39 fvdl return (0); 925 1.39 fvdl } 926 1.1 cgd } 927 1.201 yamt if ((m1->m_flags & M_EXT) != 0) { 928 1.201 yamt if (havebuf && M_TRAILINGSPACE(havebuf) >= siz && 929 1.201 yamt nfsm_aligned(mtod(havebuf, char *) + havebuf->m_len)) { 930 1.201 yamt /* 931 1.201 yamt * If the first mbuf with data has external data 932 1.201 yamt * and there is a previous mbuf with some trailing 933 1.201 yamt * space, use it to move the data into. 934 1.39 fvdl */ 935 1.39 fvdl m2 = m1; 936 1.39 fvdl *mdp = m1 = havebuf; 937 1.201 yamt *cp2 = mtod(m1, char *) + m1->m_len; 938 1.201 yamt } else if (havebuf) { 939 1.39 fvdl /* 940 1.39 fvdl * If the first mbuf has a external data 941 1.39 fvdl * and there is no previous empty mbuf 942 1.39 fvdl * allocate a new mbuf and move the external 943 1.148 perry * data to the new mbuf. Also make the first 944 1.39 fvdl * mbuf look empty. 945 1.39 fvdl */ 946 1.201 yamt m2 = m1; 947 1.201 yamt *mdp = m1 = m_get(M_WAIT, MT_DATA); 948 1.201 yamt MCLAIM(m1, m2->m_owner); 949 1.201 yamt if ((m2->m_flags & M_PKTHDR) != 0) { 950 1.234 maxv m_move_pkthdr(m1, m2); 951 1.201 yamt } 952 1.201 yamt if (havebuf) { 953 1.201 yamt havebuf->m_next = m1; 954 1.201 yamt } 955 1.201 yamt m1->m_next = m2; 956 1.201 yamt MRESETDATA(m1); 957 1.201 yamt m1->m_len = 0; 958 1.39 fvdl m2->m_data = src; 959 1.39 fvdl m2->m_len = left; 960 1.201 yamt *cp2 = mtod(m1, char *); 961 1.201 yamt } else { 962 1.201 yamt struct mbuf **nextp = &m1->m_next; 963 1.201 yamt 964 1.201 yamt m1->m_len -= left; 965 1.201 yamt do { 966 1.201 yamt m2 = m_get(M_WAIT, MT_DATA); 967 1.201 yamt MCLAIM(m2, m1->m_owner); 968 1.201 yamt if (left >= MINCLSIZE) { 969 1.201 yamt MCLGET(m2, M_WAIT); 970 1.201 yamt } 971 1.201 yamt m2->m_next = *nextp; 972 1.201 yamt *nextp = m2; 973 1.201 yamt nextp = &m2->m_next; 974 1.201 yamt len = (m2->m_flags & M_EXT) != 0 ? 975 1.201 yamt MCLBYTES : MLEN; 976 1.201 yamt if (len > left) { 977 1.201 yamt len = left; 978 1.201 yamt } 979 1.201 yamt memcpy(mtod(m2, char *), src, len); 980 1.201 yamt m2->m_len = len; 981 1.201 yamt src += len; 982 1.201 yamt left -= len; 983 1.201 yamt } while (left > 0); 984 1.201 yamt *mdp = m1 = m1->m_next; 985 1.201 yamt m2 = m1->m_next; 986 1.201 yamt *cp2 = mtod(m1, char *); 987 1.1 cgd } 988 1.39 fvdl } else { 989 1.39 fvdl /* 990 1.39 fvdl * If the first mbuf has no external data 991 1.39 fvdl * move the data to the front of the mbuf. 992 1.39 fvdl */ 993 1.201 yamt MRESETDATA(m1); 994 1.201 yamt dst = mtod(m1, char *); 995 1.201 yamt if (dst != src) { 996 1.63 perry memmove(dst, src, left); 997 1.201 yamt } 998 1.39 fvdl m1->m_len = left; 999 1.39 fvdl m2 = m1->m_next; 1000 1.201 yamt *cp2 = m1->m_data; 1001 1.1 cgd } 1002 1.201 yamt *dposp = *cp2 + siz; 1003 1.39 fvdl /* 1004 1.39 fvdl * Loop through mbufs pulling data up into first mbuf until 1005 1.39 fvdl * the first mbuf is full or there is no more data to 1006 1.39 fvdl * pullup. 1007 1.39 fvdl */ 1008 1.201 yamt dst = mtod(m1, char *) + m1->m_len; 1009 1.129 itojun while ((len = M_TRAILINGSPACE(m1)) != 0 && m2) { 1010 1.233 riastrad if ((len = uimin(len, m2->m_len)) != 0) { 1011 1.201 yamt memcpy(dst, mtod(m2, char *), len); 1012 1.201 yamt } 1013 1.39 fvdl m1->m_len += len; 1014 1.39 fvdl dst += len; 1015 1.39 fvdl m2->m_data += len; 1016 1.39 fvdl m2->m_len -= len; 1017 1.39 fvdl m2 = m2->m_next; 1018 1.39 fvdl } 1019 1.39 fvdl if (m1->m_len < siz) 1020 1.39 fvdl return (EBADRPC); 1021 1.1 cgd return (0); 1022 1.1 cgd } 1023 1.1 cgd 1024 1.1 cgd /* 1025 1.1 cgd * Advance the position in the mbuf chain. 1026 1.1 cgd */ 1027 1.24 christos int 1028 1.214 dsl nfs_adv(struct mbuf **mdp, char **dposp, int offs, int left) 1029 1.1 cgd { 1030 1.75 augustss struct mbuf *m; 1031 1.75 augustss int s; 1032 1.1 cgd 1033 1.1 cgd m = *mdp; 1034 1.1 cgd s = left; 1035 1.1 cgd while (s < offs) { 1036 1.1 cgd offs -= s; 1037 1.1 cgd m = m->m_next; 1038 1.1 cgd if (m == NULL) 1039 1.1 cgd return (EBADRPC); 1040 1.1 cgd s = m->m_len; 1041 1.1 cgd } 1042 1.1 cgd *mdp = m; 1043 1.183 christos *dposp = mtod(m, char *) + offs; 1044 1.1 cgd return (0); 1045 1.1 cgd } 1046 1.1 cgd 1047 1.1 cgd /* 1048 1.1 cgd * Copy a string into mbufs for the hard cases... 1049 1.1 cgd */ 1050 1.24 christos int 1051 1.214 dsl nfsm_strtmbuf(struct mbuf **mb, char **bpos, const char *cp, long siz) 1052 1.1 cgd { 1053 1.75 augustss struct mbuf *m1 = NULL, *m2; 1054 1.1 cgd long left, xfer, len, tlen; 1055 1.22 cgd u_int32_t *tl; 1056 1.1 cgd int putsize; 1057 1.1 cgd 1058 1.1 cgd putsize = 1; 1059 1.1 cgd m2 = *mb; 1060 1.12 mycroft left = M_TRAILINGSPACE(m2); 1061 1.1 cgd if (left > 0) { 1062 1.22 cgd tl = ((u_int32_t *)(*bpos)); 1063 1.1 cgd *tl++ = txdr_unsigned(siz); 1064 1.1 cgd putsize = 0; 1065 1.1 cgd left -= NFSX_UNSIGNED; 1066 1.1 cgd m2->m_len += NFSX_UNSIGNED; 1067 1.1 cgd if (left > 0) { 1068 1.183 christos memcpy((void *) tl, cp, left); 1069 1.1 cgd siz -= left; 1070 1.1 cgd cp += left; 1071 1.1 cgd m2->m_len += left; 1072 1.1 cgd left = 0; 1073 1.1 cgd } 1074 1.1 cgd } 1075 1.12 mycroft /* Loop around adding mbufs */ 1076 1.1 cgd while (siz > 0) { 1077 1.109 matt m1 = m_get(M_WAIT, MT_DATA); 1078 1.109 matt MCLAIM(m1, &nfs_mowner); 1079 1.1 cgd if (siz > MLEN) 1080 1.109 matt m_clget(m1, M_WAIT); 1081 1.1 cgd m1->m_len = NFSMSIZ(m1); 1082 1.1 cgd m2->m_next = m1; 1083 1.1 cgd m2 = m1; 1084 1.22 cgd tl = mtod(m1, u_int32_t *); 1085 1.1 cgd tlen = 0; 1086 1.1 cgd if (putsize) { 1087 1.1 cgd *tl++ = txdr_unsigned(siz); 1088 1.1 cgd m1->m_len -= NFSX_UNSIGNED; 1089 1.1 cgd tlen = NFSX_UNSIGNED; 1090 1.1 cgd putsize = 0; 1091 1.1 cgd } 1092 1.1 cgd if (siz < m1->m_len) { 1093 1.1 cgd len = nfsm_rndup(siz); 1094 1.1 cgd xfer = siz; 1095 1.1 cgd if (xfer < len) 1096 1.1 cgd *(tl+(xfer>>2)) = 0; 1097 1.1 cgd } else { 1098 1.1 cgd xfer = len = m1->m_len; 1099 1.1 cgd } 1100 1.183 christos memcpy((void *) tl, cp, xfer); 1101 1.1 cgd m1->m_len = len+tlen; 1102 1.1 cgd siz -= xfer; 1103 1.1 cgd cp += xfer; 1104 1.1 cgd } 1105 1.1 cgd *mb = m1; 1106 1.183 christos *bpos = mtod(m1, char *) + m1->m_len; 1107 1.1 cgd return (0); 1108 1.1 cgd } 1109 1.1 cgd 1110 1.49 fvdl /* 1111 1.49 fvdl * Directory caching routines. They work as follows: 1112 1.49 fvdl * - a cache is maintained per VDIR nfsnode. 1113 1.49 fvdl * - for each offset cookie that is exported to userspace, and can 1114 1.49 fvdl * thus be thrown back at us as an offset to VOP_READDIR, store 1115 1.49 fvdl * information in the cache. 1116 1.49 fvdl * - cached are: 1117 1.49 fvdl * - cookie itself 1118 1.49 fvdl * - blocknumber (essentially just a search key in the buffer cache) 1119 1.49 fvdl * - entry number in block. 1120 1.49 fvdl * - offset cookie of block in which this entry is stored 1121 1.49 fvdl * - 32 bit cookie if NFSMNT_XLATECOOKIE is used. 1122 1.49 fvdl * - entries are looked up in a hash table 1123 1.49 fvdl * - also maintained is an LRU list of entries, used to determine 1124 1.49 fvdl * which ones to delete if the cache grows too large. 1125 1.49 fvdl * - if 32 <-> 64 translation mode is requested for a filesystem, 1126 1.49 fvdl * the cache also functions as a translation table 1127 1.49 fvdl * - in the translation case, invalidating the cache does not mean 1128 1.49 fvdl * flushing it, but just marking entries as invalid, except for 1129 1.49 fvdl * the <64bit cookie, 32bitcookie> pair which is still valid, to 1130 1.49 fvdl * still be able to use the cache as a translation table. 1131 1.49 fvdl * - 32 bit cookies are uniquely created by combining the hash table 1132 1.49 fvdl * entry value, and one generation count per hash table entry, 1133 1.49 fvdl * incremented each time an entry is appended to the chain. 1134 1.49 fvdl * - the cache is invalidated each time a direcory is modified 1135 1.49 fvdl * - sanity checks are also done; if an entry in a block turns 1136 1.49 fvdl * out not to have a matching cookie, the cache is invalidated 1137 1.49 fvdl * and a new block starting from the wanted offset is fetched from 1138 1.49 fvdl * the server. 1139 1.49 fvdl * - directory entries as read from the server are extended to contain 1140 1.49 fvdl * the 64bit and, optionally, the 32bit cookies, for sanity checking 1141 1.49 fvdl * the cache and exporting them to userspace through the cookie 1142 1.49 fvdl * argument to VOP_READDIR. 1143 1.49 fvdl */ 1144 1.49 fvdl 1145 1.46 fvdl u_long 1146 1.214 dsl nfs_dirhash(off_t off) 1147 1.46 fvdl { 1148 1.46 fvdl int i; 1149 1.46 fvdl char *cp = (char *)&off; 1150 1.46 fvdl u_long sum = 0L; 1151 1.46 fvdl 1152 1.46 fvdl for (i = 0 ; i < sizeof (off); i++) 1153 1.46 fvdl sum += *cp++; 1154 1.46 fvdl 1155 1.46 fvdl return sum; 1156 1.46 fvdl } 1157 1.46 fvdl 1158 1.221 rmind #define _NFSDC_MTX(np) (NFSTOV(np)->v_interlock) 1159 1.195 ad #define NFSDC_LOCK(np) mutex_enter(_NFSDC_MTX(np)) 1160 1.195 ad #define NFSDC_UNLOCK(np) mutex_exit(_NFSDC_MTX(np)) 1161 1.195 ad #define NFSDC_ASSERT_LOCKED(np) KASSERT(mutex_owned(_NFSDC_MTX(np))) 1162 1.135 yamt 1163 1.49 fvdl void 1164 1.214 dsl nfs_initdircache(struct vnode *vp) 1165 1.49 fvdl { 1166 1.49 fvdl struct nfsnode *np = VTONFS(vp); 1167 1.135 yamt struct nfsdirhashhead *dircache; 1168 1.120 yamt 1169 1.202 ad dircache = hashinit(NFS_DIRHASHSIZ, HASH_LIST, true, 1170 1.202 ad &nfsdirhashmask); 1171 1.49 fvdl 1172 1.135 yamt NFSDC_LOCK(np); 1173 1.135 yamt if (np->n_dircache == NULL) { 1174 1.135 yamt np->n_dircachesize = 0; 1175 1.135 yamt np->n_dircache = dircache; 1176 1.135 yamt dircache = NULL; 1177 1.135 yamt TAILQ_INIT(&np->n_dirchain); 1178 1.135 yamt } 1179 1.135 yamt NFSDC_UNLOCK(np); 1180 1.135 yamt if (dircache) 1181 1.202 ad hashdone(dircache, HASH_LIST, nfsdirhashmask); 1182 1.120 yamt } 1183 1.120 yamt 1184 1.120 yamt void 1185 1.214 dsl nfs_initdirxlatecookie(struct vnode *vp) 1186 1.120 yamt { 1187 1.120 yamt struct nfsnode *np = VTONFS(vp); 1188 1.135 yamt unsigned *dirgens; 1189 1.120 yamt 1190 1.120 yamt KASSERT(VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_XLATECOOKIE); 1191 1.120 yamt 1192 1.196 yamt dirgens = kmem_zalloc(NFS_DIRHASHSIZ * sizeof(unsigned), KM_SLEEP); 1193 1.135 yamt NFSDC_LOCK(np); 1194 1.135 yamt if (np->n_dirgens == NULL) { 1195 1.135 yamt np->n_dirgens = dirgens; 1196 1.135 yamt dirgens = NULL; 1197 1.135 yamt } 1198 1.135 yamt NFSDC_UNLOCK(np); 1199 1.135 yamt if (dirgens) 1200 1.196 yamt kmem_free(dirgens, NFS_DIRHASHSIZ * sizeof(unsigned)); 1201 1.135 yamt } 1202 1.135 yamt 1203 1.135 yamt static const struct nfsdircache dzero; 1204 1.135 yamt 1205 1.213 dsl static void nfs_unlinkdircache(struct nfsnode *np, struct nfsdircache *); 1206 1.213 dsl static void nfs_putdircache_unlocked(struct nfsnode *, 1207 1.213 dsl struct nfsdircache *); 1208 1.135 yamt 1209 1.135 yamt static void 1210 1.214 dsl nfs_unlinkdircache(struct nfsnode *np, struct nfsdircache *ndp) 1211 1.135 yamt { 1212 1.135 yamt 1213 1.135 yamt NFSDC_ASSERT_LOCKED(np); 1214 1.135 yamt KASSERT(ndp != &dzero); 1215 1.135 yamt 1216 1.135 yamt if (LIST_NEXT(ndp, dc_hash) == (void *)-1) 1217 1.135 yamt return; 1218 1.135 yamt 1219 1.135 yamt TAILQ_REMOVE(&np->n_dirchain, ndp, dc_chain); 1220 1.135 yamt LIST_REMOVE(ndp, dc_hash); 1221 1.135 yamt LIST_NEXT(ndp, dc_hash) = (void *)-1; /* mark as unlinked */ 1222 1.135 yamt 1223 1.135 yamt nfs_putdircache_unlocked(np, ndp); 1224 1.135 yamt } 1225 1.135 yamt 1226 1.135 yamt void 1227 1.214 dsl nfs_putdircache(struct nfsnode *np, struct nfsdircache *ndp) 1228 1.135 yamt { 1229 1.135 yamt int ref; 1230 1.135 yamt 1231 1.135 yamt if (ndp == &dzero) 1232 1.135 yamt return; 1233 1.135 yamt 1234 1.135 yamt KASSERT(ndp->dc_refcnt > 0); 1235 1.135 yamt NFSDC_LOCK(np); 1236 1.135 yamt ref = --ndp->dc_refcnt; 1237 1.135 yamt NFSDC_UNLOCK(np); 1238 1.135 yamt 1239 1.135 yamt if (ref == 0) 1240 1.196 yamt kmem_free(ndp, sizeof(*ndp)); 1241 1.49 fvdl } 1242 1.49 fvdl 1243 1.135 yamt static void 1244 1.177 yamt nfs_putdircache_unlocked(struct nfsnode *np, struct nfsdircache *ndp) 1245 1.135 yamt { 1246 1.135 yamt int ref; 1247 1.135 yamt 1248 1.135 yamt NFSDC_ASSERT_LOCKED(np); 1249 1.135 yamt 1250 1.135 yamt if (ndp == &dzero) 1251 1.135 yamt return; 1252 1.135 yamt 1253 1.135 yamt KASSERT(ndp->dc_refcnt > 0); 1254 1.135 yamt ref = --ndp->dc_refcnt; 1255 1.135 yamt if (ref == 0) 1256 1.196 yamt kmem_free(ndp, sizeof(*ndp)); 1257 1.135 yamt } 1258 1.46 fvdl 1259 1.46 fvdl struct nfsdircache * 1260 1.214 dsl nfs_searchdircache(struct vnode *vp, off_t off, int do32, int *hashent) 1261 1.49 fvdl { 1262 1.49 fvdl struct nfsdirhashhead *ndhp; 1263 1.49 fvdl struct nfsdircache *ndp = NULL; 1264 1.49 fvdl struct nfsnode *np = VTONFS(vp); 1265 1.49 fvdl unsigned ent; 1266 1.49 fvdl 1267 1.49 fvdl /* 1268 1.49 fvdl * Zero is always a valid cookie. 1269 1.49 fvdl */ 1270 1.49 fvdl if (off == 0) 1271 1.149 christos /* XXXUNCONST */ 1272 1.149 christos return (struct nfsdircache *)__UNCONST(&dzero); 1273 1.49 fvdl 1274 1.134 yamt if (!np->n_dircache) 1275 1.134 yamt return NULL; 1276 1.134 yamt 1277 1.49 fvdl /* 1278 1.49 fvdl * We use a 32bit cookie as search key, directly reconstruct 1279 1.49 fvdl * the hashentry. Else use the hashfunction. 1280 1.49 fvdl */ 1281 1.49 fvdl if (do32) { 1282 1.49 fvdl ent = (u_int32_t)off >> 24; 1283 1.49 fvdl if (ent >= NFS_DIRHASHSIZ) 1284 1.49 fvdl return NULL; 1285 1.49 fvdl ndhp = &np->n_dircache[ent]; 1286 1.49 fvdl } else { 1287 1.49 fvdl ndhp = NFSDIRHASH(np, off); 1288 1.49 fvdl } 1289 1.49 fvdl 1290 1.49 fvdl if (hashent) 1291 1.49 fvdl *hashent = (int)(ndhp - np->n_dircache); 1292 1.135 yamt 1293 1.135 yamt NFSDC_LOCK(np); 1294 1.49 fvdl if (do32) { 1295 1.113 yamt LIST_FOREACH(ndp, ndhp, dc_hash) { 1296 1.49 fvdl if (ndp->dc_cookie32 == (u_int32_t)off) { 1297 1.49 fvdl /* 1298 1.49 fvdl * An invalidated entry will become the 1299 1.49 fvdl * start of a new block fetched from 1300 1.49 fvdl * the server. 1301 1.49 fvdl */ 1302 1.135 yamt if (ndp->dc_flags & NFSDC_INVALID) { 1303 1.49 fvdl ndp->dc_blkcookie = ndp->dc_cookie; 1304 1.49 fvdl ndp->dc_entry = 0; 1305 1.135 yamt ndp->dc_flags &= ~NFSDC_INVALID; 1306 1.49 fvdl } 1307 1.49 fvdl break; 1308 1.49 fvdl } 1309 1.49 fvdl } 1310 1.49 fvdl } else { 1311 1.113 yamt LIST_FOREACH(ndp, ndhp, dc_hash) { 1312 1.49 fvdl if (ndp->dc_cookie == off) 1313 1.49 fvdl break; 1314 1.113 yamt } 1315 1.49 fvdl } 1316 1.135 yamt if (ndp != NULL) 1317 1.135 yamt ndp->dc_refcnt++; 1318 1.135 yamt NFSDC_UNLOCK(np); 1319 1.49 fvdl return ndp; 1320 1.49 fvdl } 1321 1.49 fvdl 1322 1.49 fvdl 1323 1.49 fvdl struct nfsdircache * 1324 1.171 christos nfs_enterdircache(struct vnode *vp, off_t off, off_t blkoff, int en, 1325 1.177 yamt daddr_t blkno) 1326 1.46 fvdl { 1327 1.46 fvdl struct nfsnode *np = VTONFS(vp); 1328 1.46 fvdl struct nfsdirhashhead *ndhp; 1329 1.135 yamt struct nfsdircache *ndp = NULL; 1330 1.135 yamt struct nfsdircache *newndp = NULL; 1331 1.49 fvdl struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1332 1.161 christos int hashent = 0, gen, overwrite; /* XXX: GCC */ 1333 1.46 fvdl 1334 1.135 yamt /* 1335 1.135 yamt * XXX refuse entries for offset 0. amd(8) erroneously sets 1336 1.135 yamt * cookie 0 for the '.' entry, making this necessary. This 1337 1.135 yamt * isn't so bad, as 0 is a special case anyway. 1338 1.135 yamt */ 1339 1.135 yamt if (off == 0) 1340 1.149 christos /* XXXUNCONST */ 1341 1.149 christos return (struct nfsdircache *)__UNCONST(&dzero); 1342 1.135 yamt 1343 1.49 fvdl if (!np->n_dircache) 1344 1.49 fvdl /* 1345 1.49 fvdl * XXX would like to do this in nfs_nget but vtype 1346 1.49 fvdl * isn't known at that time. 1347 1.49 fvdl */ 1348 1.49 fvdl nfs_initdircache(vp); 1349 1.50 fvdl 1350 1.120 yamt if ((nmp->nm_flag & NFSMNT_XLATECOOKIE) && !np->n_dirgens) 1351 1.120 yamt nfs_initdirxlatecookie(vp); 1352 1.120 yamt 1353 1.135 yamt retry: 1354 1.49 fvdl ndp = nfs_searchdircache(vp, off, 0, &hashent); 1355 1.49 fvdl 1356 1.135 yamt NFSDC_LOCK(np); 1357 1.135 yamt if (ndp && (ndp->dc_flags & NFSDC_INVALID) == 0) { 1358 1.49 fvdl /* 1359 1.49 fvdl * Overwriting an old entry. Check if it's the same. 1360 1.49 fvdl * If so, just return. If not, remove the old entry. 1361 1.49 fvdl */ 1362 1.49 fvdl if (ndp->dc_blkcookie == blkoff && ndp->dc_entry == en) 1363 1.135 yamt goto done; 1364 1.135 yamt nfs_unlinkdircache(np, ndp); 1365 1.135 yamt nfs_putdircache_unlocked(np, ndp); 1366 1.135 yamt ndp = NULL; 1367 1.46 fvdl } 1368 1.46 fvdl 1369 1.49 fvdl ndhp = &np->n_dircache[hashent]; 1370 1.46 fvdl 1371 1.49 fvdl if (!ndp) { 1372 1.135 yamt if (newndp == NULL) { 1373 1.135 yamt NFSDC_UNLOCK(np); 1374 1.196 yamt newndp = kmem_alloc(sizeof(*newndp), KM_SLEEP); 1375 1.135 yamt newndp->dc_refcnt = 1; 1376 1.135 yamt LIST_NEXT(newndp, dc_hash) = (void *)-1; 1377 1.135 yamt goto retry; 1378 1.135 yamt } 1379 1.135 yamt ndp = newndp; 1380 1.135 yamt newndp = NULL; 1381 1.49 fvdl overwrite = 0; 1382 1.49 fvdl if (nmp->nm_flag & NFSMNT_XLATECOOKIE) { 1383 1.49 fvdl /* 1384 1.49 fvdl * We're allocating a new entry, so bump the 1385 1.49 fvdl * generation number. 1386 1.49 fvdl */ 1387 1.160 christos KASSERT(np->n_dirgens); 1388 1.49 fvdl gen = ++np->n_dirgens[hashent]; 1389 1.49 fvdl if (gen == 0) { 1390 1.49 fvdl np->n_dirgens[hashent]++; 1391 1.49 fvdl gen++; 1392 1.49 fvdl } 1393 1.49 fvdl ndp->dc_cookie32 = (hashent << 24) | (gen & 0xffffff); 1394 1.49 fvdl } 1395 1.49 fvdl } else 1396 1.49 fvdl overwrite = 1; 1397 1.46 fvdl 1398 1.49 fvdl ndp->dc_cookie = off; 1399 1.49 fvdl ndp->dc_blkcookie = blkoff; 1400 1.46 fvdl ndp->dc_entry = en; 1401 1.137 yamt ndp->dc_flags = 0; 1402 1.46 fvdl 1403 1.49 fvdl if (overwrite) 1404 1.135 yamt goto done; 1405 1.49 fvdl 1406 1.46 fvdl /* 1407 1.46 fvdl * If the maximum directory cookie cache size has been reached 1408 1.46 fvdl * for this node, take one off the front. The idea is that 1409 1.46 fvdl * directories are typically read front-to-back once, so that 1410 1.46 fvdl * the oldest entries can be thrown away without much performance 1411 1.46 fvdl * loss. 1412 1.46 fvdl */ 1413 1.46 fvdl if (np->n_dircachesize == NFS_MAXDIRCACHE) { 1414 1.135 yamt nfs_unlinkdircache(np, TAILQ_FIRST(&np->n_dirchain)); 1415 1.46 fvdl } else 1416 1.46 fvdl np->n_dircachesize++; 1417 1.148 perry 1418 1.135 yamt KASSERT(ndp->dc_refcnt == 1); 1419 1.46 fvdl LIST_INSERT_HEAD(ndhp, ndp, dc_hash); 1420 1.46 fvdl TAILQ_INSERT_TAIL(&np->n_dirchain, ndp, dc_chain); 1421 1.135 yamt ndp->dc_refcnt++; 1422 1.135 yamt done: 1423 1.135 yamt KASSERT(ndp->dc_refcnt > 0); 1424 1.135 yamt NFSDC_UNLOCK(np); 1425 1.135 yamt if (newndp) 1426 1.135 yamt nfs_putdircache(np, newndp); 1427 1.46 fvdl return ndp; 1428 1.46 fvdl } 1429 1.46 fvdl 1430 1.46 fvdl void 1431 1.214 dsl nfs_invaldircache(struct vnode *vp, int flags) 1432 1.46 fvdl { 1433 1.46 fvdl struct nfsnode *np = VTONFS(vp); 1434 1.46 fvdl struct nfsdircache *ndp = NULL; 1435 1.49 fvdl struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1436 1.181 thorpej const bool forcefree = flags & NFS_INVALDIRCACHE_FORCE; 1437 1.46 fvdl 1438 1.46 fvdl #ifdef DIAGNOSTIC 1439 1.46 fvdl if (vp->v_type != VDIR) 1440 1.46 fvdl panic("nfs: invaldircache: not dir"); 1441 1.46 fvdl #endif 1442 1.46 fvdl 1443 1.145 yamt if ((flags & NFS_INVALDIRCACHE_KEEPEOF) == 0) 1444 1.145 yamt np->n_flag &= ~NEOFVALID; 1445 1.144 yamt 1446 1.46 fvdl if (!np->n_dircache) 1447 1.46 fvdl return; 1448 1.46 fvdl 1449 1.135 yamt NFSDC_LOCK(np); 1450 1.49 fvdl if (!(nmp->nm_flag & NFSMNT_XLATECOOKIE) || forcefree) { 1451 1.135 yamt while ((ndp = TAILQ_FIRST(&np->n_dirchain)) != NULL) { 1452 1.135 yamt KASSERT(!forcefree || ndp->dc_refcnt == 1); 1453 1.135 yamt nfs_unlinkdircache(np, ndp); 1454 1.49 fvdl } 1455 1.49 fvdl np->n_dircachesize = 0; 1456 1.49 fvdl if (forcefree && np->n_dirgens) { 1457 1.196 yamt kmem_free(np->n_dirgens, 1458 1.196 yamt NFS_DIRHASHSIZ * sizeof(unsigned)); 1459 1.120 yamt np->n_dirgens = NULL; 1460 1.49 fvdl } 1461 1.49 fvdl } else { 1462 1.135 yamt TAILQ_FOREACH(ndp, &np->n_dirchain, dc_chain) 1463 1.135 yamt ndp->dc_flags |= NFSDC_INVALID; 1464 1.46 fvdl } 1465 1.46 fvdl 1466 1.135 yamt NFSDC_UNLOCK(np); 1467 1.46 fvdl } 1468 1.46 fvdl 1469 1.1 cgd /* 1470 1.35 thorpej * Called once before VFS init to initialize shared and 1471 1.35 thorpej * server-specific data structures. 1472 1.1 cgd */ 1473 1.157 yamt static int 1474 1.155 thorpej nfs_init0(void) 1475 1.1 cgd { 1476 1.189 ad 1477 1.12 mycroft nfsrtt.pos = 0; 1478 1.1 cgd rpc_vers = txdr_unsigned(RPC_VER2); 1479 1.1 cgd rpc_call = txdr_unsigned(RPC_CALL); 1480 1.1 cgd rpc_reply = txdr_unsigned(RPC_REPLY); 1481 1.1 cgd rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 1482 1.1 cgd rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 1483 1.1 cgd rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 1484 1.12 mycroft rpc_autherr = txdr_unsigned(RPC_AUTHERR); 1485 1.1 cgd rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 1486 1.25 fvdl rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 1487 1.1 cgd nfs_prog = txdr_unsigned(NFS_PROG); 1488 1.182 thorpej nfs_true = txdr_unsigned(true); 1489 1.182 thorpej nfs_false = txdr_unsigned(false); 1490 1.12 mycroft nfs_xdrneg1 = txdr_unsigned(-1); 1491 1.25 fvdl nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 1492 1.25 fvdl if (nfs_ticks < 1) 1493 1.25 fvdl nfs_ticks = 1; 1494 1.164 yamt nfsdreq_init(); 1495 1.164 yamt 1496 1.1 cgd /* 1497 1.1 cgd * Initialize reply list and start timer 1498 1.1 cgd */ 1499 1.16 mycroft TAILQ_INIT(&nfs_reqq); 1500 1.230 christos mutex_init(&nfs_reqq_lock, MUTEX_DEFAULT, IPL_NONE); 1501 1.191 yamt nfs_timer_init(); 1502 1.109 matt MOWNER_ATTACH(&nfs_mowner); 1503 1.106 jdolecek 1504 1.157 yamt return 0; 1505 1.1 cgd } 1506 1.1 cgd 1507 1.223 christos static volatile uint32_t nfs_mutex; 1508 1.223 christos static uint32_t nfs_refcount; 1509 1.223 christos 1510 1.223 christos #define nfs_p() while (atomic_cas_32(&nfs_mutex, 0, 1) == 0) continue; 1511 1.223 christos #define nfs_v() while (atomic_cas_32(&nfs_mutex, 1, 0) == 1) continue; 1512 1.223 christos 1513 1.210 ad /* 1514 1.210 ad * This is disgusting, but it must support both modular and monolothic 1515 1.223 christos * configurations, plus the code is shared between server and client. 1516 1.223 christos * For monolithic builds NFSSERVER may not imply NFS. Unfortunately we 1517 1.223 christos * can't use regular mutexes here that would require static initialization 1518 1.223 christos * and we can get initialized from multiple places, so we improvise. 1519 1.210 ad * 1520 1.210 ad * Yuck. 1521 1.210 ad */ 1522 1.155 thorpej void 1523 1.155 thorpej nfs_init(void) 1524 1.155 thorpej { 1525 1.224 pgoyette 1526 1.223 christos nfs_p(); 1527 1.223 christos if (nfs_refcount++ == 0) 1528 1.223 christos nfs_init0(); 1529 1.223 christos nfs_v(); 1530 1.155 thorpej } 1531 1.155 thorpej 1532 1.210 ad void 1533 1.210 ad nfs_fini(void) 1534 1.210 ad { 1535 1.224 pgoyette 1536 1.223 christos nfs_p(); 1537 1.223 christos if (--nfs_refcount == 0) { 1538 1.223 christos MOWNER_DETACH(&nfs_mowner); 1539 1.223 christos nfs_timer_fini(); 1540 1.230 christos mutex_destroy(&nfs_reqq_lock); 1541 1.223 christos nfsdreq_fini(); 1542 1.223 christos } 1543 1.223 christos nfs_v(); 1544 1.210 ad } 1545 1.210 ad 1546 1.1 cgd /* 1547 1.118 yamt * A fiddled version of m_adj() that ensures null fill to a 32-bit 1548 1.1 cgd * boundary and only trims off the back end 1549 1.122 yamt * 1550 1.122 yamt * 1. trim off 'len' bytes as m_adj(mp, -len). 1551 1.122 yamt * 2. add zero-padding 'nul' bytes at the end of the mbuf chain. 1552 1.1 cgd */ 1553 1.12 mycroft void 1554 1.214 dsl nfs_zeropad(struct mbuf *mp, int len, int nul) 1555 1.1 cgd { 1556 1.75 augustss struct mbuf *m; 1557 1.130 yamt int count; 1558 1.1 cgd 1559 1.1 cgd /* 1560 1.1 cgd * Trim from tail. Scan the mbuf chain, 1561 1.1 cgd * calculating its length and finding the last mbuf. 1562 1.1 cgd * If the adjustment only affects this mbuf, then just 1563 1.1 cgd * adjust and return. Otherwise, rescan and truncate 1564 1.1 cgd * after the remaining size. 1565 1.1 cgd */ 1566 1.1 cgd count = 0; 1567 1.1 cgd m = mp; 1568 1.1 cgd for (;;) { 1569 1.1 cgd count += m->m_len; 1570 1.122 yamt if (m->m_next == NULL) 1571 1.1 cgd break; 1572 1.1 cgd m = m->m_next; 1573 1.1 cgd } 1574 1.122 yamt 1575 1.122 yamt KDASSERT(count >= len); 1576 1.122 yamt 1577 1.122 yamt if (m->m_len >= len) { 1578 1.1 cgd m->m_len -= len; 1579 1.122 yamt } else { 1580 1.122 yamt count -= len; 1581 1.122 yamt /* 1582 1.122 yamt * Correct length for chain is "count". 1583 1.122 yamt * Find the mbuf with last data, adjust its length, 1584 1.122 yamt * and toss data from remaining mbufs on chain. 1585 1.122 yamt */ 1586 1.122 yamt for (m = mp; m; m = m->m_next) { 1587 1.122 yamt if (m->m_len >= count) { 1588 1.122 yamt m->m_len = count; 1589 1.122 yamt break; 1590 1.118 yamt } 1591 1.122 yamt count -= m->m_len; 1592 1.1 cgd } 1593 1.159 christos KASSERT(m && m->m_next); 1594 1.122 yamt m_freem(m->m_next); 1595 1.122 yamt m->m_next = NULL; 1596 1.1 cgd } 1597 1.122 yamt 1598 1.130 yamt KDASSERT(m->m_next == NULL); 1599 1.130 yamt 1600 1.122 yamt /* 1601 1.122 yamt * zero-padding. 1602 1.122 yamt */ 1603 1.122 yamt if (nul > 0) { 1604 1.130 yamt char *cp; 1605 1.130 yamt int i; 1606 1.130 yamt 1607 1.231 maxv if (M_READONLY(m) || M_TRAILINGSPACE(m) < nul) { 1608 1.122 yamt struct mbuf *n; 1609 1.122 yamt 1610 1.122 yamt KDASSERT(MLEN >= nul); 1611 1.122 yamt n = m_get(M_WAIT, MT_DATA); 1612 1.122 yamt MCLAIM(n, &nfs_mowner); 1613 1.122 yamt n->m_len = nul; 1614 1.130 yamt n->m_next = NULL; 1615 1.122 yamt m->m_next = n; 1616 1.183 christos cp = mtod(n, void *); 1617 1.122 yamt } else { 1618 1.183 christos cp = mtod(m, char *) + m->m_len; 1619 1.122 yamt m->m_len += nul; 1620 1.1 cgd } 1621 1.122 yamt for (i = 0; i < nul; i++) 1622 1.122 yamt *cp++ = '\0'; 1623 1.1 cgd } 1624 1.122 yamt return; 1625 1.1 cgd } 1626 1.1 cgd 1627 1.1 cgd /* 1628 1.25 fvdl * Make these functions instead of macros, so that the kernel text size 1629 1.25 fvdl * doesn't get too big... 1630 1.25 fvdl */ 1631 1.25 fvdl void 1632 1.214 dsl nfsm_srvwcc(struct nfsrv_descript *nfsd, int before_ret, struct vattr *before_vap, int after_ret, struct vattr *after_vap, struct mbuf **mbp, char **bposp) 1633 1.25 fvdl { 1634 1.109 matt struct mbuf *mb = *mbp; 1635 1.75 augustss char *bpos = *bposp; 1636 1.75 augustss u_int32_t *tl; 1637 1.25 fvdl 1638 1.25 fvdl if (before_ret) { 1639 1.25 fvdl nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 1640 1.25 fvdl *tl = nfs_false; 1641 1.25 fvdl } else { 1642 1.25 fvdl nfsm_build(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 1643 1.25 fvdl *tl++ = nfs_true; 1644 1.66 fair txdr_hyper(before_vap->va_size, tl); 1645 1.25 fvdl tl += 2; 1646 1.25 fvdl txdr_nfsv3time(&(before_vap->va_mtime), tl); 1647 1.25 fvdl tl += 2; 1648 1.25 fvdl txdr_nfsv3time(&(before_vap->va_ctime), tl); 1649 1.25 fvdl } 1650 1.25 fvdl *bposp = bpos; 1651 1.25 fvdl *mbp = mb; 1652 1.25 fvdl nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 1653 1.25 fvdl } 1654 1.25 fvdl 1655 1.25 fvdl void 1656 1.214 dsl nfsm_srvpostopattr(struct nfsrv_descript *nfsd, int after_ret, struct vattr *after_vap, struct mbuf **mbp, char **bposp) 1657 1.25 fvdl { 1658 1.109 matt struct mbuf *mb = *mbp; 1659 1.75 augustss char *bpos = *bposp; 1660 1.75 augustss u_int32_t *tl; 1661 1.75 augustss struct nfs_fattr *fp; 1662 1.25 fvdl 1663 1.25 fvdl if (after_ret) { 1664 1.25 fvdl nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 1665 1.25 fvdl *tl = nfs_false; 1666 1.25 fvdl } else { 1667 1.25 fvdl nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_V3FATTR); 1668 1.25 fvdl *tl++ = nfs_true; 1669 1.25 fvdl fp = (struct nfs_fattr *)tl; 1670 1.25 fvdl nfsm_srvfattr(nfsd, after_vap, fp); 1671 1.25 fvdl } 1672 1.25 fvdl *mbp = mb; 1673 1.25 fvdl *bposp = bpos; 1674 1.25 fvdl } 1675 1.25 fvdl 1676 1.25 fvdl void 1677 1.214 dsl nfsm_srvfattr(struct nfsrv_descript *nfsd, struct vattr *vap, struct nfs_fattr *fp) 1678 1.25 fvdl { 1679 1.25 fvdl 1680 1.25 fvdl fp->fa_nlink = txdr_unsigned(vap->va_nlink); 1681 1.25 fvdl fp->fa_uid = txdr_unsigned(vap->va_uid); 1682 1.25 fvdl fp->fa_gid = txdr_unsigned(vap->va_gid); 1683 1.25 fvdl if (nfsd->nd_flag & ND_NFSV3) { 1684 1.25 fvdl fp->fa_type = vtonfsv3_type(vap->va_type); 1685 1.25 fvdl fp->fa_mode = vtonfsv3_mode(vap->va_mode); 1686 1.66 fair txdr_hyper(vap->va_size, &fp->fa3_size); 1687 1.66 fair txdr_hyper(vap->va_bytes, &fp->fa3_used); 1688 1.25 fvdl fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 1689 1.25 fvdl fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 1690 1.25 fvdl fp->fa3_fsid.nfsuquad[0] = 0; 1691 1.25 fvdl fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 1692 1.151 yamt txdr_hyper(vap->va_fileid, &fp->fa3_fileid); 1693 1.25 fvdl txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 1694 1.25 fvdl txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 1695 1.25 fvdl txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 1696 1.25 fvdl } else { 1697 1.25 fvdl fp->fa_type = vtonfsv2_type(vap->va_type); 1698 1.25 fvdl fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 1699 1.239 mlelstv fp->fa2_size = txdr_unsigned(NFS_V2CLAMP32(vap->va_size)); 1700 1.239 mlelstv fp->fa2_blocksize = txdr_unsigned(NFS_V2CLAMP16(vap->va_blocksize)); 1701 1.25 fvdl if (vap->va_type == VFIFO) 1702 1.25 fvdl fp->fa2_rdev = 0xffffffff; 1703 1.25 fvdl else 1704 1.25 fvdl fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 1705 1.25 fvdl fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 1706 1.25 fvdl fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 1707 1.25 fvdl fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 1708 1.25 fvdl txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 1709 1.25 fvdl txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 1710 1.25 fvdl txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 1711 1.25 fvdl } 1712 1.25 fvdl } 1713 1.25 fvdl 1714 1.1 cgd /* 1715 1.182 thorpej * This function compares two net addresses by family and returns true 1716 1.12 mycroft * if they are the same host. 1717 1.182 thorpej * If there is any doubt, return false. 1718 1.12 mycroft * The AF_INET family is handled as a special case so that address mbufs 1719 1.12 mycroft * don't need to be saved to store "struct in_addr", which is only 4 bytes. 1720 1.1 cgd */ 1721 1.24 christos int 1722 1.214 dsl netaddr_match(int family, union nethostaddr *haddr, struct mbuf *nam) 1723 1.1 cgd { 1724 1.75 augustss struct sockaddr_in *inetaddr; 1725 1.1 cgd 1726 1.12 mycroft switch (family) { 1727 1.12 mycroft case AF_INET: 1728 1.12 mycroft inetaddr = mtod(nam, struct sockaddr_in *); 1729 1.12 mycroft if (inetaddr->sin_family == AF_INET && 1730 1.12 mycroft inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 1731 1.12 mycroft return (1); 1732 1.12 mycroft break; 1733 1.76 fvdl case AF_INET6: 1734 1.76 fvdl { 1735 1.76 fvdl struct sockaddr_in6 *sin6_1, *sin6_2; 1736 1.76 fvdl 1737 1.76 fvdl sin6_1 = mtod(nam, struct sockaddr_in6 *); 1738 1.76 fvdl sin6_2 = mtod(haddr->had_nam, struct sockaddr_in6 *); 1739 1.76 fvdl if (sin6_1->sin6_family == AF_INET6 && 1740 1.76 fvdl IN6_ARE_ADDR_EQUAL(&sin6_1->sin6_addr, &sin6_2->sin6_addr)) 1741 1.76 fvdl return 1; 1742 1.76 fvdl } 1743 1.12 mycroft default: 1744 1.12 mycroft break; 1745 1.12 mycroft }; 1746 1.12 mycroft return (0); 1747 1.25 fvdl } 1748 1.25 fvdl 1749 1.226 christos struct nfs_clearcommit_ctx { 1750 1.226 christos struct mount *mp; 1751 1.226 christos }; 1752 1.226 christos 1753 1.226 christos static bool 1754 1.226 christos nfs_clearcommit_selector(void *cl, struct vnode *vp) 1755 1.226 christos { 1756 1.226 christos struct nfs_clearcommit_ctx *c = cl; 1757 1.226 christos struct nfsnode *np; 1758 1.226 christos 1759 1.229 riastrad KASSERT(mutex_owned(vp->v_interlock)); 1760 1.229 riastrad 1761 1.237 ad /* XXXAD mountpoint check looks like nonsense to me */ 1762 1.226 christos np = VTONFS(vp); 1763 1.226 christos if (vp->v_type != VREG || vp->v_mount != c->mp || np == NULL) 1764 1.226 christos return false; 1765 1.226 christos return false; 1766 1.226 christos } 1767 1.226 christos 1768 1.25 fvdl /* 1769 1.25 fvdl * The write verifier has changed (probably due to a server reboot), so all 1770 1.114 yamt * PG_NEEDCOMMIT pages will have to be written again. Since they are marked 1771 1.117 yamt * as dirty or are being written out just now, all this takes is clearing 1772 1.117 yamt * the PG_NEEDCOMMIT flag. Once done the new write verifier can be set for 1773 1.117 yamt * the mount point. 1774 1.25 fvdl */ 1775 1.25 fvdl void 1776 1.214 dsl nfs_clearcommit(struct mount *mp) 1777 1.25 fvdl { 1778 1.237 ad struct vnode *vp; 1779 1.225 hannken struct vnode_iterator *marker; 1780 1.116 yamt struct nfsmount *nmp = VFSTONFS(mp); 1781 1.226 christos struct nfs_clearcommit_ctx ctx; 1782 1.237 ad struct nfsnode *np; 1783 1.237 ad struct vm_page *pg; 1784 1.237 ad struct uvm_page_array a; 1785 1.237 ad voff_t off; 1786 1.116 yamt 1787 1.180 yamt rw_enter(&nmp->nm_writeverflock, RW_WRITER); 1788 1.225 hannken vfs_vnode_iterator_init(mp, &marker); 1789 1.226 christos ctx.mp = mp; 1790 1.237 ad for (;;) { 1791 1.237 ad vp = vfs_vnode_iterator_next(marker, nfs_clearcommit_selector, 1792 1.237 ad &ctx); 1793 1.237 ad if (vp == NULL) 1794 1.237 ad break; 1795 1.237 ad rw_enter(vp->v_uobj.vmobjlock, RW_WRITER); 1796 1.237 ad np = VTONFS(vp); 1797 1.237 ad np->n_pushlo = np->n_pushhi = np->n_pushedlo = 1798 1.237 ad np->n_pushedhi = 0; 1799 1.237 ad np->n_commitflags &= 1800 1.237 ad ~(NFS_COMMIT_PUSH_VALID | NFS_COMMIT_PUSHED_VALID); 1801 1.240 ad uvm_page_array_init(&a, &vp->v_uobj, 0); 1802 1.237 ad off = 0; 1803 1.240 ad while ((pg = uvm_page_array_fill_and_peek(&a, off, 0)) != 1804 1.240 ad NULL) { 1805 1.237 ad pg->flags &= ~PG_NEEDCOMMIT; 1806 1.237 ad uvm_page_array_advance(&a); 1807 1.237 ad off = pg->offset + PAGE_SIZE; 1808 1.237 ad } 1809 1.237 ad uvm_page_array_fini(&a); 1810 1.237 ad rw_exit(vp->v_uobj.vmobjlock); 1811 1.237 ad vrele(vp); 1812 1.237 ad } 1813 1.226 christos KASSERT(vp == NULL); 1814 1.225 hannken vfs_vnode_iterator_destroy(marker); 1815 1.186 yamt mutex_enter(&nmp->nm_lock); 1816 1.116 yamt nmp->nm_iflag &= ~NFSMNT_STALEWRITEVERF; 1817 1.186 yamt mutex_exit(&nmp->nm_lock); 1818 1.180 yamt rw_exit(&nmp->nm_writeverflock); 1819 1.83 fvdl } 1820 1.83 fvdl 1821 1.83 fvdl void 1822 1.214 dsl nfs_merge_commit_ranges(struct vnode *vp) 1823 1.83 fvdl { 1824 1.83 fvdl struct nfsnode *np = VTONFS(vp); 1825 1.112 yamt 1826 1.112 yamt KASSERT(np->n_commitflags & NFS_COMMIT_PUSH_VALID); 1827 1.83 fvdl 1828 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) { 1829 1.83 fvdl np->n_pushedlo = np->n_pushlo; 1830 1.83 fvdl np->n_pushedhi = np->n_pushhi; 1831 1.83 fvdl np->n_commitflags |= NFS_COMMIT_PUSHED_VALID; 1832 1.83 fvdl } else { 1833 1.83 fvdl if (np->n_pushlo < np->n_pushedlo) 1834 1.83 fvdl np->n_pushedlo = np->n_pushlo; 1835 1.83 fvdl if (np->n_pushhi > np->n_pushedhi) 1836 1.83 fvdl np->n_pushedhi = np->n_pushhi; 1837 1.83 fvdl } 1838 1.83 fvdl 1839 1.83 fvdl np->n_pushlo = np->n_pushhi = 0; 1840 1.83 fvdl np->n_commitflags &= ~NFS_COMMIT_PUSH_VALID; 1841 1.83 fvdl 1842 1.111 yamt #ifdef NFS_DEBUG_COMMIT 1843 1.83 fvdl printf("merge: committed: %u - %u\n", (unsigned)np->n_pushedlo, 1844 1.83 fvdl (unsigned)np->n_pushedhi); 1845 1.83 fvdl #endif 1846 1.83 fvdl } 1847 1.83 fvdl 1848 1.83 fvdl int 1849 1.215 dsl nfs_in_committed_range(struct vnode *vp, off_t off, off_t len) 1850 1.83 fvdl { 1851 1.83 fvdl struct nfsnode *np = VTONFS(vp); 1852 1.83 fvdl off_t lo, hi; 1853 1.83 fvdl 1854 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) 1855 1.83 fvdl return 0; 1856 1.89 chs lo = off; 1857 1.89 chs hi = lo + len; 1858 1.83 fvdl 1859 1.83 fvdl return (lo >= np->n_pushedlo && hi <= np->n_pushedhi); 1860 1.83 fvdl } 1861 1.83 fvdl 1862 1.83 fvdl int 1863 1.215 dsl nfs_in_tobecommitted_range(struct vnode *vp, off_t off, off_t len) 1864 1.83 fvdl { 1865 1.83 fvdl struct nfsnode *np = VTONFS(vp); 1866 1.83 fvdl off_t lo, hi; 1867 1.83 fvdl 1868 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) 1869 1.83 fvdl return 0; 1870 1.89 chs lo = off; 1871 1.89 chs hi = lo + len; 1872 1.83 fvdl 1873 1.83 fvdl return (lo >= np->n_pushlo && hi <= np->n_pushhi); 1874 1.83 fvdl } 1875 1.83 fvdl 1876 1.83 fvdl void 1877 1.215 dsl nfs_add_committed_range(struct vnode *vp, off_t off, off_t len) 1878 1.83 fvdl { 1879 1.83 fvdl struct nfsnode *np = VTONFS(vp); 1880 1.83 fvdl off_t lo, hi; 1881 1.83 fvdl 1882 1.89 chs lo = off; 1883 1.89 chs hi = lo + len; 1884 1.83 fvdl 1885 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) { 1886 1.83 fvdl np->n_pushedlo = lo; 1887 1.83 fvdl np->n_pushedhi = hi; 1888 1.83 fvdl np->n_commitflags |= NFS_COMMIT_PUSHED_VALID; 1889 1.83 fvdl } else { 1890 1.83 fvdl if (hi > np->n_pushedhi) 1891 1.83 fvdl np->n_pushedhi = hi; 1892 1.83 fvdl if (lo < np->n_pushedlo) 1893 1.83 fvdl np->n_pushedlo = lo; 1894 1.83 fvdl } 1895 1.111 yamt #ifdef NFS_DEBUG_COMMIT 1896 1.83 fvdl printf("add: committed: %u - %u\n", (unsigned)np->n_pushedlo, 1897 1.83 fvdl (unsigned)np->n_pushedhi); 1898 1.83 fvdl #endif 1899 1.83 fvdl } 1900 1.83 fvdl 1901 1.83 fvdl void 1902 1.215 dsl nfs_del_committed_range(struct vnode *vp, off_t off, off_t len) 1903 1.83 fvdl { 1904 1.83 fvdl struct nfsnode *np = VTONFS(vp); 1905 1.83 fvdl off_t lo, hi; 1906 1.83 fvdl 1907 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSHED_VALID)) 1908 1.83 fvdl return; 1909 1.83 fvdl 1910 1.89 chs lo = off; 1911 1.89 chs hi = lo + len; 1912 1.83 fvdl 1913 1.83 fvdl if (lo > np->n_pushedhi || hi < np->n_pushedlo) 1914 1.83 fvdl return; 1915 1.83 fvdl if (lo <= np->n_pushedlo) 1916 1.83 fvdl np->n_pushedlo = hi; 1917 1.83 fvdl else if (hi >= np->n_pushedhi) 1918 1.83 fvdl np->n_pushedhi = lo; 1919 1.83 fvdl else { 1920 1.83 fvdl /* 1921 1.83 fvdl * XXX There's only one range. If the deleted range 1922 1.83 fvdl * is in the middle, pick the largest of the 1923 1.83 fvdl * contiguous ranges that it leaves. 1924 1.83 fvdl */ 1925 1.83 fvdl if ((np->n_pushedlo - lo) > (hi - np->n_pushedhi)) 1926 1.83 fvdl np->n_pushedhi = lo; 1927 1.83 fvdl else 1928 1.83 fvdl np->n_pushedlo = hi; 1929 1.83 fvdl } 1930 1.111 yamt #ifdef NFS_DEBUG_COMMIT 1931 1.83 fvdl printf("del: committed: %u - %u\n", (unsigned)np->n_pushedlo, 1932 1.83 fvdl (unsigned)np->n_pushedhi); 1933 1.83 fvdl #endif 1934 1.83 fvdl } 1935 1.83 fvdl 1936 1.83 fvdl void 1937 1.215 dsl nfs_add_tobecommitted_range(struct vnode *vp, off_t off, off_t len) 1938 1.83 fvdl { 1939 1.83 fvdl struct nfsnode *np = VTONFS(vp); 1940 1.83 fvdl off_t lo, hi; 1941 1.83 fvdl 1942 1.89 chs lo = off; 1943 1.89 chs hi = lo + len; 1944 1.83 fvdl 1945 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) { 1946 1.83 fvdl np->n_pushlo = lo; 1947 1.83 fvdl np->n_pushhi = hi; 1948 1.83 fvdl np->n_commitflags |= NFS_COMMIT_PUSH_VALID; 1949 1.83 fvdl } else { 1950 1.83 fvdl if (lo < np->n_pushlo) 1951 1.83 fvdl np->n_pushlo = lo; 1952 1.83 fvdl if (hi > np->n_pushhi) 1953 1.83 fvdl np->n_pushhi = hi; 1954 1.83 fvdl } 1955 1.111 yamt #ifdef NFS_DEBUG_COMMIT 1956 1.83 fvdl printf("add: tobecommitted: %u - %u\n", (unsigned)np->n_pushlo, 1957 1.83 fvdl (unsigned)np->n_pushhi); 1958 1.83 fvdl #endif 1959 1.83 fvdl } 1960 1.83 fvdl 1961 1.83 fvdl void 1962 1.215 dsl nfs_del_tobecommitted_range(struct vnode *vp, off_t off, off_t len) 1963 1.83 fvdl { 1964 1.83 fvdl struct nfsnode *np = VTONFS(vp); 1965 1.83 fvdl off_t lo, hi; 1966 1.83 fvdl 1967 1.83 fvdl if (!(np->n_commitflags & NFS_COMMIT_PUSH_VALID)) 1968 1.83 fvdl return; 1969 1.83 fvdl 1970 1.89 chs lo = off; 1971 1.89 chs hi = lo + len; 1972 1.83 fvdl 1973 1.83 fvdl if (lo > np->n_pushhi || hi < np->n_pushlo) 1974 1.83 fvdl return; 1975 1.83 fvdl 1976 1.83 fvdl if (lo <= np->n_pushlo) 1977 1.83 fvdl np->n_pushlo = hi; 1978 1.83 fvdl else if (hi >= np->n_pushhi) 1979 1.83 fvdl np->n_pushhi = lo; 1980 1.83 fvdl else { 1981 1.83 fvdl /* 1982 1.83 fvdl * XXX There's only one range. If the deleted range 1983 1.83 fvdl * is in the middle, pick the largest of the 1984 1.83 fvdl * contiguous ranges that it leaves. 1985 1.83 fvdl */ 1986 1.83 fvdl if ((np->n_pushlo - lo) > (hi - np->n_pushhi)) 1987 1.83 fvdl np->n_pushhi = lo; 1988 1.83 fvdl else 1989 1.83 fvdl np->n_pushlo = hi; 1990 1.83 fvdl } 1991 1.111 yamt #ifdef NFS_DEBUG_COMMIT 1992 1.83 fvdl printf("del: tobecommitted: %u - %u\n", (unsigned)np->n_pushlo, 1993 1.83 fvdl (unsigned)np->n_pushhi); 1994 1.83 fvdl #endif 1995 1.25 fvdl } 1996 1.25 fvdl 1997 1.25 fvdl /* 1998 1.25 fvdl * Map errnos to NFS error numbers. For Version 3 also filter out error 1999 1.25 fvdl * numbers not specified for the associated procedure. 2000 1.25 fvdl */ 2001 1.25 fvdl int 2002 1.214 dsl nfsrv_errmap(struct nfsrv_descript *nd, int err) 2003 1.25 fvdl { 2004 1.90 jdolecek const short *defaulterrp, *errp; 2005 1.25 fvdl 2006 1.25 fvdl if (nd->nd_flag & ND_NFSV3) { 2007 1.25 fvdl if (nd->nd_procnum <= NFSPROC_COMMIT) { 2008 1.25 fvdl errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 2009 1.25 fvdl while (*++errp) { 2010 1.25 fvdl if (*errp == err) 2011 1.25 fvdl return (err); 2012 1.25 fvdl else if (*errp > err) 2013 1.25 fvdl break; 2014 1.25 fvdl } 2015 1.25 fvdl return ((int)*defaulterrp); 2016 1.25 fvdl } else 2017 1.25 fvdl return (err & 0xffff); 2018 1.25 fvdl } 2019 1.25 fvdl if (err <= ELAST) 2020 1.25 fvdl return ((int)nfsrv_v2errmap[err - 1]); 2021 1.25 fvdl return (NFSERR_IO); 2022 1.25 fvdl } 2023 1.25 fvdl 2024 1.126 yamt u_int32_t 2025 1.216 cegger nfs_getxid(void) 2026 1.126 yamt { 2027 1.126 yamt u_int32_t newxid; 2028 1.126 yamt 2029 1.227 tls if (__predict_false(nfs_xid == 0)) { 2030 1.227 tls nfs_xid = cprng_fast32(); 2031 1.227 tls } 2032 1.227 tls 2033 1.207 pooka /* get next xid. skip 0 */ 2034 1.207 pooka do { 2035 1.207 pooka newxid = atomic_inc_32_nv(&nfs_xid); 2036 1.207 pooka } while (__predict_false(newxid == 0)); 2037 1.126 yamt 2038 1.126 yamt return txdr_unsigned(newxid); 2039 1.126 yamt } 2040 1.126 yamt 2041 1.126 yamt /* 2042 1.126 yamt * assign a new xid for existing request. 2043 1.126 yamt * used for NFSERR_JUKEBOX handling. 2044 1.126 yamt */ 2045 1.126 yamt void 2046 1.126 yamt nfs_renewxid(struct nfsreq *req) 2047 1.126 yamt { 2048 1.126 yamt u_int32_t xid; 2049 1.126 yamt int off; 2050 1.126 yamt 2051 1.126 yamt xid = nfs_getxid(); 2052 1.126 yamt if (req->r_nmp->nm_sotype == SOCK_STREAM) 2053 1.126 yamt off = sizeof(u_int32_t); /* RPC record mark */ 2054 1.126 yamt else 2055 1.126 yamt off = 0; 2056 1.126 yamt 2057 1.126 yamt m_copyback(req->r_mreq, off, sizeof(xid), (void *)&xid); 2058 1.126 yamt req->r_xid = xid; 2059 1.1 cgd } 2060
Indexes created Wed Sep 24 05:09:52 GMT 2025