nfs_subs.c revision 1.56
1 1.56 fvdl /* $NetBSD: nfs_subs.c,v 1.56 1998/03/01 02:24:28 fvdl Exp $ */ 2 1.14 cgd 3 1.1 cgd /* 4 1.12 mycroft * Copyright (c) 1989, 1993 5 1.12 mycroft * The Regents of the University of California. All rights reserved. 6 1.1 cgd * 7 1.1 cgd * This code is derived from software contributed to Berkeley by 8 1.1 cgd * Rick Macklem at The University of Guelph. 9 1.1 cgd * 10 1.1 cgd * Redistribution and use in source and binary forms, with or without 11 1.1 cgd * modification, are permitted provided that the following conditions 12 1.1 cgd * are met: 13 1.1 cgd * 1. Redistributions of source code must retain the above copyright 14 1.1 cgd * notice, this list of conditions and the following disclaimer. 15 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 16 1.1 cgd * notice, this list of conditions and the following disclaimer in the 17 1.1 cgd * documentation and/or other materials provided with the distribution. 18 1.1 cgd * 3. All advertising materials mentioning features or use of this software 19 1.1 cgd * must display the following acknowledgement: 20 1.1 cgd * This product includes software developed by the University of 21 1.1 cgd * California, Berkeley and its contributors. 22 1.1 cgd * 4. Neither the name of the University nor the names of its contributors 23 1.1 cgd * may be used to endorse or promote products derived from this software 24 1.1 cgd * without specific prior written permission. 25 1.1 cgd * 26 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 1.1 cgd * SUCH DAMAGE. 37 1.1 cgd * 38 1.25 fvdl * @(#)nfs_subs.c 8.8 (Berkeley) 5/22/95 39 1.1 cgd */ 40 1.1 cgd 41 1.55 thorpej #include "fs_nfs.h" 42 1.54 mrg #include "opt_uvm.h" 43 1.25 fvdl 44 1.1 cgd /* 45 1.1 cgd * These functions support the macros and help fiddle mbuf chains for 46 1.1 cgd * the nfs op functions. They do things like create the rpc header and 47 1.1 cgd * copy data between mbuf chains and uio lists. 48 1.1 cgd */ 49 1.9 mycroft #include <sys/param.h> 50 1.9 mycroft #include <sys/proc.h> 51 1.9 mycroft #include <sys/systm.h> 52 1.9 mycroft #include <sys/kernel.h> 53 1.9 mycroft #include <sys/mount.h> 54 1.9 mycroft #include <sys/vnode.h> 55 1.9 mycroft #include <sys/namei.h> 56 1.9 mycroft #include <sys/mbuf.h> 57 1.12 mycroft #include <sys/socket.h> 58 1.12 mycroft #include <sys/stat.h> 59 1.25 fvdl #include <sys/malloc.h> 60 1.30 fvdl #include <sys/time.h> 61 1.43 fvdl #include <sys/dirent.h> 62 1.25 fvdl 63 1.25 fvdl #include <vm/vm.h> 64 1.1 cgd 65 1.51 mrg #if defined(UVM) 66 1.51 mrg #include <uvm/uvm_extern.h> 67 1.51 mrg #endif 68 1.51 mrg 69 1.9 mycroft #include <nfs/rpcv2.h> 70 1.25 fvdl #include <nfs/nfsproto.h> 71 1.9 mycroft #include <nfs/nfsnode.h> 72 1.9 mycroft #include <nfs/nfs.h> 73 1.9 mycroft #include <nfs/xdr_subs.h> 74 1.9 mycroft #include <nfs/nfsm_subs.h> 75 1.12 mycroft #include <nfs/nfsmount.h> 76 1.12 mycroft #include <nfs/nqnfs.h> 77 1.12 mycroft #include <nfs/nfsrtt.h> 78 1.24 christos #include <nfs/nfs_var.h> 79 1.12 mycroft 80 1.12 mycroft #include <miscfs/specfs/specdev.h> 81 1.12 mycroft 82 1.24 christos #include <vm/vm.h> 83 1.24 christos 84 1.12 mycroft #include <netinet/in.h> 85 1.12 mycroft #ifdef ISO 86 1.12 mycroft #include <netiso/iso.h> 87 1.12 mycroft #endif 88 1.1 cgd 89 1.1 cgd /* 90 1.1 cgd * Data items converted to xdr at startup, since they are constant 91 1.1 cgd * This is kinda hokey, but may save a little time doing byte swaps 92 1.1 cgd */ 93 1.22 cgd u_int32_t nfs_xdrneg1; 94 1.22 cgd u_int32_t rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 95 1.25 fvdl rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 96 1.12 mycroft rpc_auth_kerb; 97 1.25 fvdl u_int32_t nfs_prog, nqnfs_prog, nfs_true, nfs_false; 98 1.12 mycroft 99 1.1 cgd /* And other global data */ 100 1.22 cgd static u_int32_t nfs_xid = 0; 101 1.25 fvdl nfstype nfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON, 102 1.25 fvdl NFCHR, NFNON }; 103 1.25 fvdl nfstype nfsv3_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK, 104 1.25 fvdl NFFIFO, NFNON }; 105 1.25 fvdl enum vtype nv2tov_type[8] = { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON }; 106 1.25 fvdl enum vtype nv3tov_type[8]={ VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO }; 107 1.25 fvdl int nfs_ticks; 108 1.43 fvdl extern struct nfs_public nfs_pub; 109 1.25 fvdl 110 1.35 thorpej /* NFS client/server stats. */ 111 1.35 thorpej struct nfsstats nfsstats; 112 1.35 thorpej 113 1.25 fvdl /* 114 1.25 fvdl * Mapping of old NFS Version 2 RPC numbers to generic numbers. 115 1.25 fvdl */ 116 1.25 fvdl int nfsv3_procid[NFS_NPROCS] = { 117 1.25 fvdl NFSPROC_NULL, 118 1.25 fvdl NFSPROC_GETATTR, 119 1.25 fvdl NFSPROC_SETATTR, 120 1.25 fvdl NFSPROC_NOOP, 121 1.25 fvdl NFSPROC_LOOKUP, 122 1.25 fvdl NFSPROC_READLINK, 123 1.25 fvdl NFSPROC_READ, 124 1.25 fvdl NFSPROC_NOOP, 125 1.25 fvdl NFSPROC_WRITE, 126 1.25 fvdl NFSPROC_CREATE, 127 1.25 fvdl NFSPROC_REMOVE, 128 1.25 fvdl NFSPROC_RENAME, 129 1.25 fvdl NFSPROC_LINK, 130 1.25 fvdl NFSPROC_SYMLINK, 131 1.25 fvdl NFSPROC_MKDIR, 132 1.25 fvdl NFSPROC_RMDIR, 133 1.25 fvdl NFSPROC_READDIR, 134 1.25 fvdl NFSPROC_FSSTAT, 135 1.25 fvdl NFSPROC_NOOP, 136 1.25 fvdl NFSPROC_NOOP, 137 1.25 fvdl NFSPROC_NOOP, 138 1.25 fvdl NFSPROC_NOOP, 139 1.25 fvdl NFSPROC_NOOP, 140 1.25 fvdl NFSPROC_NOOP, 141 1.25 fvdl NFSPROC_NOOP, 142 1.25 fvdl NFSPROC_NOOP 143 1.25 fvdl }; 144 1.25 fvdl 145 1.25 fvdl /* 146 1.25 fvdl * and the reverse mapping from generic to Version 2 procedure numbers 147 1.25 fvdl */ 148 1.25 fvdl int nfsv2_procid[NFS_NPROCS] = { 149 1.25 fvdl NFSV2PROC_NULL, 150 1.25 fvdl NFSV2PROC_GETATTR, 151 1.25 fvdl NFSV2PROC_SETATTR, 152 1.25 fvdl NFSV2PROC_LOOKUP, 153 1.25 fvdl NFSV2PROC_NOOP, 154 1.25 fvdl NFSV2PROC_READLINK, 155 1.25 fvdl NFSV2PROC_READ, 156 1.25 fvdl NFSV2PROC_WRITE, 157 1.25 fvdl NFSV2PROC_CREATE, 158 1.25 fvdl NFSV2PROC_MKDIR, 159 1.25 fvdl NFSV2PROC_SYMLINK, 160 1.25 fvdl NFSV2PROC_CREATE, 161 1.25 fvdl NFSV2PROC_REMOVE, 162 1.25 fvdl NFSV2PROC_RMDIR, 163 1.25 fvdl NFSV2PROC_RENAME, 164 1.25 fvdl NFSV2PROC_LINK, 165 1.25 fvdl NFSV2PROC_READDIR, 166 1.25 fvdl NFSV2PROC_NOOP, 167 1.25 fvdl NFSV2PROC_STATFS, 168 1.25 fvdl NFSV2PROC_NOOP, 169 1.25 fvdl NFSV2PROC_NOOP, 170 1.25 fvdl NFSV2PROC_NOOP, 171 1.25 fvdl NFSV2PROC_NOOP, 172 1.25 fvdl NFSV2PROC_NOOP, 173 1.25 fvdl NFSV2PROC_NOOP, 174 1.25 fvdl NFSV2PROC_NOOP, 175 1.25 fvdl }; 176 1.25 fvdl 177 1.25 fvdl /* 178 1.25 fvdl * Maps errno values to nfs error numbers. 179 1.25 fvdl * Use NFSERR_IO as the catch all for ones not specifically defined in 180 1.25 fvdl * RFC 1094. 181 1.25 fvdl */ 182 1.25 fvdl static u_char nfsrv_v2errmap[ELAST] = { 183 1.25 fvdl NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 184 1.25 fvdl NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 185 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 186 1.25 fvdl NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 187 1.25 fvdl NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 188 1.25 fvdl NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 189 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 190 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 191 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 192 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 193 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 194 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 195 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 196 1.25 fvdl NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 197 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 198 1.25 fvdl NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 199 1.52 mikel NFSERR_IO, NFSERR_IO, 200 1.25 fvdl }; 201 1.25 fvdl 202 1.25 fvdl /* 203 1.25 fvdl * Maps errno values to nfs error numbers. 204 1.25 fvdl * Although it is not obvious whether or not NFS clients really care if 205 1.25 fvdl * a returned error value is in the specified list for the procedure, the 206 1.25 fvdl * safest thing to do is filter them appropriately. For Version 2, the 207 1.25 fvdl * X/Open XNFS document is the only specification that defines error values 208 1.25 fvdl * for each RPC (The RFC simply lists all possible error values for all RPCs), 209 1.25 fvdl * so I have decided to not do this for Version 2. 210 1.25 fvdl * The first entry is the default error return and the rest are the valid 211 1.25 fvdl * errors for that RPC in increasing numeric order. 212 1.25 fvdl */ 213 1.25 fvdl static short nfsv3err_null[] = { 214 1.25 fvdl 0, 215 1.25 fvdl 0, 216 1.25 fvdl }; 217 1.25 fvdl 218 1.25 fvdl static short nfsv3err_getattr[] = { 219 1.25 fvdl NFSERR_IO, 220 1.25 fvdl NFSERR_IO, 221 1.25 fvdl NFSERR_STALE, 222 1.25 fvdl NFSERR_BADHANDLE, 223 1.25 fvdl NFSERR_SERVERFAULT, 224 1.25 fvdl 0, 225 1.25 fvdl }; 226 1.25 fvdl 227 1.25 fvdl static short nfsv3err_setattr[] = { 228 1.25 fvdl NFSERR_IO, 229 1.25 fvdl NFSERR_PERM, 230 1.25 fvdl NFSERR_IO, 231 1.25 fvdl NFSERR_ACCES, 232 1.25 fvdl NFSERR_INVAL, 233 1.25 fvdl NFSERR_NOSPC, 234 1.25 fvdl NFSERR_ROFS, 235 1.25 fvdl NFSERR_DQUOT, 236 1.25 fvdl NFSERR_STALE, 237 1.25 fvdl NFSERR_BADHANDLE, 238 1.25 fvdl NFSERR_NOT_SYNC, 239 1.25 fvdl NFSERR_SERVERFAULT, 240 1.25 fvdl 0, 241 1.25 fvdl }; 242 1.25 fvdl 243 1.25 fvdl static short nfsv3err_lookup[] = { 244 1.25 fvdl NFSERR_IO, 245 1.25 fvdl NFSERR_NOENT, 246 1.25 fvdl NFSERR_IO, 247 1.25 fvdl NFSERR_ACCES, 248 1.25 fvdl NFSERR_NOTDIR, 249 1.25 fvdl NFSERR_NAMETOL, 250 1.25 fvdl NFSERR_STALE, 251 1.25 fvdl NFSERR_BADHANDLE, 252 1.25 fvdl NFSERR_SERVERFAULT, 253 1.25 fvdl 0, 254 1.25 fvdl }; 255 1.25 fvdl 256 1.25 fvdl static short nfsv3err_access[] = { 257 1.25 fvdl NFSERR_IO, 258 1.25 fvdl NFSERR_IO, 259 1.25 fvdl NFSERR_STALE, 260 1.25 fvdl NFSERR_BADHANDLE, 261 1.25 fvdl NFSERR_SERVERFAULT, 262 1.25 fvdl 0, 263 1.25 fvdl }; 264 1.25 fvdl 265 1.25 fvdl static short nfsv3err_readlink[] = { 266 1.25 fvdl NFSERR_IO, 267 1.25 fvdl NFSERR_IO, 268 1.25 fvdl NFSERR_ACCES, 269 1.25 fvdl NFSERR_INVAL, 270 1.25 fvdl NFSERR_STALE, 271 1.25 fvdl NFSERR_BADHANDLE, 272 1.25 fvdl NFSERR_NOTSUPP, 273 1.25 fvdl NFSERR_SERVERFAULT, 274 1.25 fvdl 0, 275 1.25 fvdl }; 276 1.25 fvdl 277 1.25 fvdl static short nfsv3err_read[] = { 278 1.25 fvdl NFSERR_IO, 279 1.25 fvdl NFSERR_IO, 280 1.25 fvdl NFSERR_NXIO, 281 1.25 fvdl NFSERR_ACCES, 282 1.25 fvdl NFSERR_INVAL, 283 1.25 fvdl NFSERR_STALE, 284 1.25 fvdl NFSERR_BADHANDLE, 285 1.25 fvdl NFSERR_SERVERFAULT, 286 1.25 fvdl 0, 287 1.25 fvdl }; 288 1.25 fvdl 289 1.25 fvdl static short nfsv3err_write[] = { 290 1.25 fvdl NFSERR_IO, 291 1.25 fvdl NFSERR_IO, 292 1.25 fvdl NFSERR_ACCES, 293 1.25 fvdl NFSERR_INVAL, 294 1.25 fvdl NFSERR_FBIG, 295 1.25 fvdl NFSERR_NOSPC, 296 1.25 fvdl NFSERR_ROFS, 297 1.25 fvdl NFSERR_DQUOT, 298 1.25 fvdl NFSERR_STALE, 299 1.25 fvdl NFSERR_BADHANDLE, 300 1.25 fvdl NFSERR_SERVERFAULT, 301 1.25 fvdl 0, 302 1.25 fvdl }; 303 1.25 fvdl 304 1.25 fvdl static short nfsv3err_create[] = { 305 1.25 fvdl NFSERR_IO, 306 1.25 fvdl NFSERR_IO, 307 1.25 fvdl NFSERR_ACCES, 308 1.25 fvdl NFSERR_EXIST, 309 1.25 fvdl NFSERR_NOTDIR, 310 1.25 fvdl NFSERR_NOSPC, 311 1.25 fvdl NFSERR_ROFS, 312 1.25 fvdl NFSERR_NAMETOL, 313 1.25 fvdl NFSERR_DQUOT, 314 1.25 fvdl NFSERR_STALE, 315 1.25 fvdl NFSERR_BADHANDLE, 316 1.25 fvdl NFSERR_NOTSUPP, 317 1.25 fvdl NFSERR_SERVERFAULT, 318 1.25 fvdl 0, 319 1.25 fvdl }; 320 1.25 fvdl 321 1.25 fvdl static short nfsv3err_mkdir[] = { 322 1.25 fvdl NFSERR_IO, 323 1.25 fvdl NFSERR_IO, 324 1.25 fvdl NFSERR_ACCES, 325 1.25 fvdl NFSERR_EXIST, 326 1.25 fvdl NFSERR_NOTDIR, 327 1.25 fvdl NFSERR_NOSPC, 328 1.25 fvdl NFSERR_ROFS, 329 1.25 fvdl NFSERR_NAMETOL, 330 1.25 fvdl NFSERR_DQUOT, 331 1.25 fvdl NFSERR_STALE, 332 1.25 fvdl NFSERR_BADHANDLE, 333 1.25 fvdl NFSERR_NOTSUPP, 334 1.25 fvdl NFSERR_SERVERFAULT, 335 1.25 fvdl 0, 336 1.25 fvdl }; 337 1.25 fvdl 338 1.25 fvdl static short nfsv3err_symlink[] = { 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 1.25 fvdl static short nfsv3err_mknod[] = { 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 NFSERR_BADTYPE, 370 1.25 fvdl 0, 371 1.25 fvdl }; 372 1.25 fvdl 373 1.25 fvdl static short nfsv3err_remove[] = { 374 1.25 fvdl NFSERR_IO, 375 1.25 fvdl NFSERR_NOENT, 376 1.25 fvdl NFSERR_IO, 377 1.25 fvdl NFSERR_ACCES, 378 1.25 fvdl NFSERR_NOTDIR, 379 1.25 fvdl NFSERR_ROFS, 380 1.25 fvdl NFSERR_NAMETOL, 381 1.25 fvdl NFSERR_STALE, 382 1.25 fvdl NFSERR_BADHANDLE, 383 1.25 fvdl NFSERR_SERVERFAULT, 384 1.25 fvdl 0, 385 1.25 fvdl }; 386 1.25 fvdl 387 1.25 fvdl static short nfsv3err_rmdir[] = { 388 1.25 fvdl NFSERR_IO, 389 1.25 fvdl NFSERR_NOENT, 390 1.25 fvdl NFSERR_IO, 391 1.25 fvdl NFSERR_ACCES, 392 1.25 fvdl NFSERR_EXIST, 393 1.25 fvdl NFSERR_NOTDIR, 394 1.25 fvdl NFSERR_INVAL, 395 1.25 fvdl NFSERR_ROFS, 396 1.25 fvdl NFSERR_NAMETOL, 397 1.25 fvdl NFSERR_NOTEMPTY, 398 1.25 fvdl NFSERR_STALE, 399 1.25 fvdl NFSERR_BADHANDLE, 400 1.25 fvdl NFSERR_NOTSUPP, 401 1.25 fvdl NFSERR_SERVERFAULT, 402 1.25 fvdl 0, 403 1.25 fvdl }; 404 1.25 fvdl 405 1.25 fvdl static short nfsv3err_rename[] = { 406 1.25 fvdl NFSERR_IO, 407 1.25 fvdl NFSERR_NOENT, 408 1.25 fvdl NFSERR_IO, 409 1.25 fvdl NFSERR_ACCES, 410 1.25 fvdl NFSERR_EXIST, 411 1.25 fvdl NFSERR_XDEV, 412 1.25 fvdl NFSERR_NOTDIR, 413 1.25 fvdl NFSERR_ISDIR, 414 1.25 fvdl NFSERR_INVAL, 415 1.25 fvdl NFSERR_NOSPC, 416 1.25 fvdl NFSERR_ROFS, 417 1.25 fvdl NFSERR_MLINK, 418 1.25 fvdl NFSERR_NAMETOL, 419 1.25 fvdl NFSERR_NOTEMPTY, 420 1.25 fvdl NFSERR_DQUOT, 421 1.25 fvdl NFSERR_STALE, 422 1.25 fvdl NFSERR_BADHANDLE, 423 1.25 fvdl NFSERR_NOTSUPP, 424 1.25 fvdl NFSERR_SERVERFAULT, 425 1.25 fvdl 0, 426 1.25 fvdl }; 427 1.25 fvdl 428 1.25 fvdl static short nfsv3err_link[] = { 429 1.25 fvdl NFSERR_IO, 430 1.25 fvdl NFSERR_IO, 431 1.25 fvdl NFSERR_ACCES, 432 1.25 fvdl NFSERR_EXIST, 433 1.25 fvdl NFSERR_XDEV, 434 1.25 fvdl NFSERR_NOTDIR, 435 1.25 fvdl NFSERR_INVAL, 436 1.25 fvdl NFSERR_NOSPC, 437 1.25 fvdl NFSERR_ROFS, 438 1.25 fvdl NFSERR_MLINK, 439 1.25 fvdl NFSERR_NAMETOL, 440 1.25 fvdl NFSERR_DQUOT, 441 1.25 fvdl NFSERR_STALE, 442 1.25 fvdl NFSERR_BADHANDLE, 443 1.25 fvdl NFSERR_NOTSUPP, 444 1.25 fvdl NFSERR_SERVERFAULT, 445 1.25 fvdl 0, 446 1.25 fvdl }; 447 1.25 fvdl 448 1.25 fvdl static short nfsv3err_readdir[] = { 449 1.25 fvdl NFSERR_IO, 450 1.25 fvdl NFSERR_IO, 451 1.25 fvdl NFSERR_ACCES, 452 1.25 fvdl NFSERR_NOTDIR, 453 1.25 fvdl NFSERR_STALE, 454 1.25 fvdl NFSERR_BADHANDLE, 455 1.25 fvdl NFSERR_BAD_COOKIE, 456 1.25 fvdl NFSERR_TOOSMALL, 457 1.25 fvdl NFSERR_SERVERFAULT, 458 1.25 fvdl 0, 459 1.25 fvdl }; 460 1.25 fvdl 461 1.25 fvdl static short nfsv3err_readdirplus[] = { 462 1.25 fvdl NFSERR_IO, 463 1.25 fvdl NFSERR_IO, 464 1.25 fvdl NFSERR_ACCES, 465 1.25 fvdl NFSERR_NOTDIR, 466 1.25 fvdl NFSERR_STALE, 467 1.25 fvdl NFSERR_BADHANDLE, 468 1.25 fvdl NFSERR_BAD_COOKIE, 469 1.25 fvdl NFSERR_NOTSUPP, 470 1.25 fvdl NFSERR_TOOSMALL, 471 1.25 fvdl NFSERR_SERVERFAULT, 472 1.25 fvdl 0, 473 1.25 fvdl }; 474 1.25 fvdl 475 1.25 fvdl static short nfsv3err_fsstat[] = { 476 1.25 fvdl NFSERR_IO, 477 1.25 fvdl NFSERR_IO, 478 1.25 fvdl NFSERR_STALE, 479 1.25 fvdl NFSERR_BADHANDLE, 480 1.25 fvdl NFSERR_SERVERFAULT, 481 1.25 fvdl 0, 482 1.25 fvdl }; 483 1.25 fvdl 484 1.25 fvdl static short nfsv3err_fsinfo[] = { 485 1.25 fvdl NFSERR_STALE, 486 1.25 fvdl NFSERR_STALE, 487 1.25 fvdl NFSERR_BADHANDLE, 488 1.25 fvdl NFSERR_SERVERFAULT, 489 1.25 fvdl 0, 490 1.25 fvdl }; 491 1.25 fvdl 492 1.25 fvdl static short nfsv3err_pathconf[] = { 493 1.25 fvdl NFSERR_STALE, 494 1.25 fvdl NFSERR_STALE, 495 1.25 fvdl NFSERR_BADHANDLE, 496 1.25 fvdl NFSERR_SERVERFAULT, 497 1.25 fvdl 0, 498 1.25 fvdl }; 499 1.25 fvdl 500 1.25 fvdl static short nfsv3err_commit[] = { 501 1.25 fvdl NFSERR_IO, 502 1.25 fvdl NFSERR_IO, 503 1.25 fvdl NFSERR_STALE, 504 1.25 fvdl NFSERR_BADHANDLE, 505 1.25 fvdl NFSERR_SERVERFAULT, 506 1.25 fvdl 0, 507 1.25 fvdl }; 508 1.25 fvdl 509 1.25 fvdl static short *nfsrv_v3errmap[] = { 510 1.25 fvdl nfsv3err_null, 511 1.25 fvdl nfsv3err_getattr, 512 1.25 fvdl nfsv3err_setattr, 513 1.25 fvdl nfsv3err_lookup, 514 1.25 fvdl nfsv3err_access, 515 1.25 fvdl nfsv3err_readlink, 516 1.25 fvdl nfsv3err_read, 517 1.25 fvdl nfsv3err_write, 518 1.25 fvdl nfsv3err_create, 519 1.25 fvdl nfsv3err_mkdir, 520 1.25 fvdl nfsv3err_symlink, 521 1.25 fvdl nfsv3err_mknod, 522 1.25 fvdl nfsv3err_remove, 523 1.25 fvdl nfsv3err_rmdir, 524 1.25 fvdl nfsv3err_rename, 525 1.25 fvdl nfsv3err_link, 526 1.25 fvdl nfsv3err_readdir, 527 1.25 fvdl nfsv3err_readdirplus, 528 1.25 fvdl nfsv3err_fsstat, 529 1.25 fvdl nfsv3err_fsinfo, 530 1.25 fvdl nfsv3err_pathconf, 531 1.25 fvdl nfsv3err_commit, 532 1.25 fvdl }; 533 1.25 fvdl 534 1.12 mycroft extern struct nfsrtt nfsrtt; 535 1.12 mycroft extern time_t nqnfsstarttime; 536 1.12 mycroft extern int nqsrv_clockskew; 537 1.12 mycroft extern int nqsrv_writeslack; 538 1.12 mycroft extern int nqsrv_maxlease; 539 1.25 fvdl extern int nqnfs_piggy[NFS_NPROCS]; 540 1.25 fvdl extern nfstype nfsv2_type[9]; 541 1.25 fvdl extern nfstype nfsv3_type[9]; 542 1.25 fvdl extern struct nfsnodehashhead *nfsnodehashtbl; 543 1.25 fvdl extern u_long nfsnodehash; 544 1.1 cgd 545 1.18 mycroft LIST_HEAD(nfsnodehashhead, nfsnode); 546 1.46 fvdl u_long nfsdirhashmask; 547 1.18 mycroft 548 1.43 fvdl int nfs_webnamei __P((struct nameidata *, struct vnode *, struct proc *)); 549 1.43 fvdl 550 1.1 cgd /* 551 1.1 cgd * Create the header for an rpc request packet 552 1.1 cgd * The hsiz is the size of the rest of the nfs request header. 553 1.1 cgd * (just used to decide if a cluster is a good idea) 554 1.1 cgd */ 555 1.12 mycroft struct mbuf * 556 1.12 mycroft nfsm_reqh(vp, procid, hsiz, bposp) 557 1.12 mycroft struct vnode *vp; 558 1.1 cgd u_long procid; 559 1.1 cgd int hsiz; 560 1.12 mycroft caddr_t *bposp; 561 1.12 mycroft { 562 1.12 mycroft register struct mbuf *mb; 563 1.22 cgd register u_int32_t *tl; 564 1.12 mycroft register caddr_t bpos; 565 1.12 mycroft struct mbuf *mb2; 566 1.12 mycroft struct nfsmount *nmp; 567 1.12 mycroft int nqflag; 568 1.12 mycroft 569 1.12 mycroft MGET(mb, M_WAIT, MT_DATA); 570 1.12 mycroft if (hsiz >= MINCLSIZE) 571 1.12 mycroft MCLGET(mb, M_WAIT); 572 1.12 mycroft mb->m_len = 0; 573 1.12 mycroft bpos = mtod(mb, caddr_t); 574 1.12 mycroft 575 1.12 mycroft /* 576 1.12 mycroft * For NQNFS, add lease request. 577 1.12 mycroft */ 578 1.12 mycroft if (vp) { 579 1.12 mycroft nmp = VFSTONFS(vp->v_mount); 580 1.12 mycroft if (nmp->nm_flag & NFSMNT_NQNFS) { 581 1.12 mycroft nqflag = NQNFS_NEEDLEASE(vp, procid); 582 1.12 mycroft if (nqflag) { 583 1.22 cgd nfsm_build(tl, u_int32_t *, 2*NFSX_UNSIGNED); 584 1.12 mycroft *tl++ = txdr_unsigned(nqflag); 585 1.12 mycroft *tl = txdr_unsigned(nmp->nm_leaseterm); 586 1.12 mycroft } else { 587 1.22 cgd nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 588 1.12 mycroft *tl = 0; 589 1.12 mycroft } 590 1.12 mycroft } 591 1.12 mycroft } 592 1.12 mycroft /* Finally, return values */ 593 1.12 mycroft *bposp = bpos; 594 1.12 mycroft return (mb); 595 1.12 mycroft } 596 1.12 mycroft 597 1.12 mycroft /* 598 1.12 mycroft * Build the RPC header and fill in the authorization info. 599 1.12 mycroft * The authorization string argument is only used when the credentials 600 1.12 mycroft * come from outside of the kernel. 601 1.12 mycroft * Returns the head of the mbuf list. 602 1.12 mycroft */ 603 1.12 mycroft struct mbuf * 604 1.25 fvdl nfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 605 1.25 fvdl verf_str, mrest, mrest_len, mbp, xidp) 606 1.12 mycroft register struct ucred *cr; 607 1.25 fvdl int nmflag; 608 1.12 mycroft int procid; 609 1.12 mycroft int auth_type; 610 1.12 mycroft int auth_len; 611 1.12 mycroft char *auth_str; 612 1.25 fvdl int verf_len; 613 1.25 fvdl char *verf_str; 614 1.12 mycroft struct mbuf *mrest; 615 1.12 mycroft int mrest_len; 616 1.12 mycroft struct mbuf **mbp; 617 1.22 cgd u_int32_t *xidp; 618 1.1 cgd { 619 1.12 mycroft register struct mbuf *mb; 620 1.22 cgd register u_int32_t *tl; 621 1.12 mycroft register caddr_t bpos; 622 1.12 mycroft register int i; 623 1.12 mycroft struct mbuf *mreq, *mb2; 624 1.12 mycroft int siz, grpsiz, authsiz; 625 1.30 fvdl struct timeval tv; 626 1.30 fvdl static u_int32_t base; 627 1.1 cgd 628 1.12 mycroft authsiz = nfsm_rndup(auth_len); 629 1.12 mycroft MGETHDR(mb, M_WAIT, MT_DATA); 630 1.25 fvdl if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 631 1.12 mycroft MCLGET(mb, M_WAIT); 632 1.25 fvdl } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 633 1.25 fvdl MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 634 1.12 mycroft } else { 635 1.25 fvdl MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 636 1.1 cgd } 637 1.12 mycroft mb->m_len = 0; 638 1.12 mycroft mreq = mb; 639 1.12 mycroft bpos = mtod(mb, caddr_t); 640 1.12 mycroft 641 1.12 mycroft /* 642 1.12 mycroft * First the RPC header. 643 1.12 mycroft */ 644 1.25 fvdl nfsm_build(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 645 1.30 fvdl 646 1.30 fvdl /* 647 1.30 fvdl * derive initial xid from system time 648 1.30 fvdl * XXX time is invalid if root not yet mounted 649 1.30 fvdl */ 650 1.30 fvdl if (!base && (rootvp)) { 651 1.30 fvdl microtime(&tv); 652 1.30 fvdl base = tv.tv_sec << 12; 653 1.30 fvdl nfs_xid = base; 654 1.30 fvdl } 655 1.30 fvdl /* 656 1.30 fvdl * Skip zero xid if it should ever happen. 657 1.30 fvdl */ 658 1.12 mycroft if (++nfs_xid == 0) 659 1.12 mycroft nfs_xid++; 660 1.30 fvdl 661 1.12 mycroft *tl++ = *xidp = txdr_unsigned(nfs_xid); 662 1.1 cgd *tl++ = rpc_call; 663 1.1 cgd *tl++ = rpc_vers; 664 1.25 fvdl if (nmflag & NFSMNT_NQNFS) { 665 1.12 mycroft *tl++ = txdr_unsigned(NQNFS_PROG); 666 1.25 fvdl *tl++ = txdr_unsigned(NQNFS_VER3); 667 1.1 cgd } else { 668 1.12 mycroft *tl++ = txdr_unsigned(NFS_PROG); 669 1.25 fvdl if (nmflag & NFSMNT_NFSV3) 670 1.25 fvdl *tl++ = txdr_unsigned(NFS_VER3); 671 1.25 fvdl else 672 1.25 fvdl *tl++ = txdr_unsigned(NFS_VER2); 673 1.1 cgd } 674 1.25 fvdl if (nmflag & NFSMNT_NFSV3) 675 1.25 fvdl *tl++ = txdr_unsigned(procid); 676 1.25 fvdl else 677 1.25 fvdl *tl++ = txdr_unsigned(nfsv2_procid[procid]); 678 1.12 mycroft 679 1.12 mycroft /* 680 1.12 mycroft * And then the authorization cred. 681 1.12 mycroft */ 682 1.12 mycroft *tl++ = txdr_unsigned(auth_type); 683 1.12 mycroft *tl = txdr_unsigned(authsiz); 684 1.12 mycroft switch (auth_type) { 685 1.12 mycroft case RPCAUTH_UNIX: 686 1.22 cgd nfsm_build(tl, u_int32_t *, auth_len); 687 1.12 mycroft *tl++ = 0; /* stamp ?? */ 688 1.12 mycroft *tl++ = 0; /* NULL hostname */ 689 1.12 mycroft *tl++ = txdr_unsigned(cr->cr_uid); 690 1.19 jtc *tl++ = txdr_unsigned(cr->cr_gid); 691 1.12 mycroft grpsiz = (auth_len >> 2) - 5; 692 1.12 mycroft *tl++ = txdr_unsigned(grpsiz); 693 1.20 mycroft for (i = 0; i < grpsiz; i++) 694 1.12 mycroft *tl++ = txdr_unsigned(cr->cr_groups[i]); 695 1.12 mycroft break; 696 1.25 fvdl case RPCAUTH_KERB4: 697 1.12 mycroft siz = auth_len; 698 1.12 mycroft while (siz > 0) { 699 1.12 mycroft if (M_TRAILINGSPACE(mb) == 0) { 700 1.12 mycroft MGET(mb2, M_WAIT, MT_DATA); 701 1.12 mycroft if (siz >= MINCLSIZE) 702 1.12 mycroft MCLGET(mb2, M_WAIT); 703 1.12 mycroft mb->m_next = mb2; 704 1.12 mycroft mb = mb2; 705 1.12 mycroft mb->m_len = 0; 706 1.12 mycroft bpos = mtod(mb, caddr_t); 707 1.12 mycroft } 708 1.12 mycroft i = min(siz, M_TRAILINGSPACE(mb)); 709 1.12 mycroft bcopy(auth_str, bpos, i); 710 1.12 mycroft mb->m_len += i; 711 1.12 mycroft auth_str += i; 712 1.12 mycroft bpos += i; 713 1.12 mycroft siz -= i; 714 1.12 mycroft } 715 1.12 mycroft if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 716 1.12 mycroft for (i = 0; i < siz; i++) 717 1.12 mycroft *bpos++ = '\0'; 718 1.12 mycroft mb->m_len += siz; 719 1.12 mycroft } 720 1.12 mycroft break; 721 1.12 mycroft }; 722 1.25 fvdl 723 1.25 fvdl /* 724 1.25 fvdl * And the verifier... 725 1.25 fvdl */ 726 1.25 fvdl nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 727 1.25 fvdl if (verf_str) { 728 1.25 fvdl *tl++ = txdr_unsigned(RPCAUTH_KERB4); 729 1.25 fvdl *tl = txdr_unsigned(verf_len); 730 1.25 fvdl siz = verf_len; 731 1.25 fvdl while (siz > 0) { 732 1.25 fvdl if (M_TRAILINGSPACE(mb) == 0) { 733 1.25 fvdl MGET(mb2, M_WAIT, MT_DATA); 734 1.25 fvdl if (siz >= MINCLSIZE) 735 1.25 fvdl MCLGET(mb2, M_WAIT); 736 1.25 fvdl mb->m_next = mb2; 737 1.25 fvdl mb = mb2; 738 1.25 fvdl mb->m_len = 0; 739 1.25 fvdl bpos = mtod(mb, caddr_t); 740 1.25 fvdl } 741 1.25 fvdl i = min(siz, M_TRAILINGSPACE(mb)); 742 1.25 fvdl bcopy(verf_str, bpos, i); 743 1.25 fvdl mb->m_len += i; 744 1.25 fvdl verf_str += i; 745 1.25 fvdl bpos += i; 746 1.25 fvdl siz -= i; 747 1.25 fvdl } 748 1.25 fvdl if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 749 1.25 fvdl for (i = 0; i < siz; i++) 750 1.25 fvdl *bpos++ = '\0'; 751 1.25 fvdl mb->m_len += siz; 752 1.25 fvdl } 753 1.25 fvdl } else { 754 1.25 fvdl *tl++ = txdr_unsigned(RPCAUTH_NULL); 755 1.25 fvdl *tl = 0; 756 1.25 fvdl } 757 1.12 mycroft mb->m_next = mrest; 758 1.25 fvdl mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 759 1.12 mycroft mreq->m_pkthdr.rcvif = (struct ifnet *)0; 760 1.12 mycroft *mbp = mb; 761 1.1 cgd return (mreq); 762 1.1 cgd } 763 1.1 cgd 764 1.1 cgd /* 765 1.1 cgd * copies mbuf chain to the uio scatter/gather list 766 1.1 cgd */ 767 1.24 christos int 768 1.1 cgd nfsm_mbuftouio(mrep, uiop, siz, dpos) 769 1.1 cgd struct mbuf **mrep; 770 1.1 cgd register struct uio *uiop; 771 1.1 cgd int siz; 772 1.1 cgd caddr_t *dpos; 773 1.1 cgd { 774 1.1 cgd register char *mbufcp, *uiocp; 775 1.1 cgd register int xfer, left, len; 776 1.1 cgd register struct mbuf *mp; 777 1.1 cgd long uiosiz, rem; 778 1.1 cgd int error = 0; 779 1.1 cgd 780 1.1 cgd mp = *mrep; 781 1.1 cgd mbufcp = *dpos; 782 1.1 cgd len = mtod(mp, caddr_t)+mp->m_len-mbufcp; 783 1.1 cgd rem = nfsm_rndup(siz)-siz; 784 1.1 cgd while (siz > 0) { 785 1.1 cgd if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 786 1.1 cgd return (EFBIG); 787 1.1 cgd left = uiop->uio_iov->iov_len; 788 1.1 cgd uiocp = uiop->uio_iov->iov_base; 789 1.1 cgd if (left > siz) 790 1.1 cgd left = siz; 791 1.1 cgd uiosiz = left; 792 1.1 cgd while (left > 0) { 793 1.1 cgd while (len == 0) { 794 1.1 cgd mp = mp->m_next; 795 1.1 cgd if (mp == NULL) 796 1.1 cgd return (EBADRPC); 797 1.1 cgd mbufcp = mtod(mp, caddr_t); 798 1.1 cgd len = mp->m_len; 799 1.1 cgd } 800 1.1 cgd xfer = (left > len) ? len : left; 801 1.1 cgd #ifdef notdef 802 1.1 cgd /* Not Yet.. */ 803 1.1 cgd if (uiop->uio_iov->iov_op != NULL) 804 1.1 cgd (*(uiop->uio_iov->iov_op)) 805 1.1 cgd (mbufcp, uiocp, xfer); 806 1.1 cgd else 807 1.1 cgd #endif 808 1.1 cgd if (uiop->uio_segflg == UIO_SYSSPACE) 809 1.1 cgd bcopy(mbufcp, uiocp, xfer); 810 1.1 cgd else 811 1.1 cgd copyout(mbufcp, uiocp, xfer); 812 1.1 cgd left -= xfer; 813 1.1 cgd len -= xfer; 814 1.1 cgd mbufcp += xfer; 815 1.1 cgd uiocp += xfer; 816 1.1 cgd uiop->uio_offset += xfer; 817 1.1 cgd uiop->uio_resid -= xfer; 818 1.1 cgd } 819 1.1 cgd if (uiop->uio_iov->iov_len <= siz) { 820 1.1 cgd uiop->uio_iovcnt--; 821 1.1 cgd uiop->uio_iov++; 822 1.1 cgd } else { 823 1.1 cgd uiop->uio_iov->iov_base += uiosiz; 824 1.1 cgd uiop->uio_iov->iov_len -= uiosiz; 825 1.1 cgd } 826 1.1 cgd siz -= uiosiz; 827 1.1 cgd } 828 1.1 cgd *dpos = mbufcp; 829 1.1 cgd *mrep = mp; 830 1.1 cgd if (rem > 0) { 831 1.1 cgd if (len < rem) 832 1.1 cgd error = nfs_adv(mrep, dpos, rem, len); 833 1.1 cgd else 834 1.1 cgd *dpos += rem; 835 1.1 cgd } 836 1.1 cgd return (error); 837 1.1 cgd } 838 1.1 cgd 839 1.1 cgd /* 840 1.29 fvdl * copies a uio scatter/gather list to an mbuf chain. 841 1.29 fvdl * NOTE: can ony handle iovcnt == 1 842 1.1 cgd */ 843 1.24 christos int 844 1.1 cgd nfsm_uiotombuf(uiop, mq, siz, bpos) 845 1.1 cgd register struct uio *uiop; 846 1.1 cgd struct mbuf **mq; 847 1.1 cgd int siz; 848 1.1 cgd caddr_t *bpos; 849 1.1 cgd { 850 1.1 cgd register char *uiocp; 851 1.1 cgd register struct mbuf *mp, *mp2; 852 1.12 mycroft register int xfer, left, mlen; 853 1.1 cgd int uiosiz, clflg, rem; 854 1.1 cgd char *cp; 855 1.1 cgd 856 1.29 fvdl #ifdef DIAGNOSTIC 857 1.29 fvdl if (uiop->uio_iovcnt != 1) 858 1.29 fvdl panic("nfsm_uiotombuf: iovcnt != 1"); 859 1.29 fvdl #endif 860 1.29 fvdl 861 1.1 cgd if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 862 1.1 cgd clflg = 1; 863 1.1 cgd else 864 1.1 cgd clflg = 0; 865 1.1 cgd rem = nfsm_rndup(siz)-siz; 866 1.12 mycroft mp = mp2 = *mq; 867 1.1 cgd while (siz > 0) { 868 1.1 cgd left = uiop->uio_iov->iov_len; 869 1.1 cgd uiocp = uiop->uio_iov->iov_base; 870 1.1 cgd if (left > siz) 871 1.1 cgd left = siz; 872 1.1 cgd uiosiz = left; 873 1.1 cgd while (left > 0) { 874 1.12 mycroft mlen = M_TRAILINGSPACE(mp); 875 1.12 mycroft if (mlen == 0) { 876 1.12 mycroft MGET(mp, M_WAIT, MT_DATA); 877 1.12 mycroft if (clflg) 878 1.12 mycroft MCLGET(mp, M_WAIT); 879 1.12 mycroft mp->m_len = 0; 880 1.12 mycroft mp2->m_next = mp; 881 1.12 mycroft mp2 = mp; 882 1.12 mycroft mlen = M_TRAILINGSPACE(mp); 883 1.12 mycroft } 884 1.12 mycroft xfer = (left > mlen) ? mlen : left; 885 1.1 cgd #ifdef notdef 886 1.1 cgd /* Not Yet.. */ 887 1.1 cgd if (uiop->uio_iov->iov_op != NULL) 888 1.1 cgd (*(uiop->uio_iov->iov_op)) 889 1.12 mycroft (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 890 1.1 cgd else 891 1.1 cgd #endif 892 1.1 cgd if (uiop->uio_segflg == UIO_SYSSPACE) 893 1.12 mycroft bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 894 1.1 cgd else 895 1.12 mycroft copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 896 1.12 mycroft mp->m_len += xfer; 897 1.1 cgd left -= xfer; 898 1.1 cgd uiocp += xfer; 899 1.1 cgd uiop->uio_offset += xfer; 900 1.1 cgd uiop->uio_resid -= xfer; 901 1.1 cgd } 902 1.29 fvdl uiop->uio_iov->iov_base += uiosiz; 903 1.29 fvdl uiop->uio_iov->iov_len -= uiosiz; 904 1.1 cgd siz -= uiosiz; 905 1.1 cgd } 906 1.1 cgd if (rem > 0) { 907 1.12 mycroft if (rem > M_TRAILINGSPACE(mp)) { 908 1.1 cgd MGET(mp, M_WAIT, MT_DATA); 909 1.1 cgd mp->m_len = 0; 910 1.1 cgd mp2->m_next = mp; 911 1.1 cgd } 912 1.1 cgd cp = mtod(mp, caddr_t)+mp->m_len; 913 1.1 cgd for (left = 0; left < rem; left++) 914 1.1 cgd *cp++ = '\0'; 915 1.1 cgd mp->m_len += rem; 916 1.1 cgd *bpos = cp; 917 1.1 cgd } else 918 1.1 cgd *bpos = mtod(mp, caddr_t)+mp->m_len; 919 1.1 cgd *mq = mp; 920 1.1 cgd return (0); 921 1.1 cgd } 922 1.1 cgd 923 1.1 cgd /* 924 1.39 fvdl * Get at least "siz" bytes of correctly aligned data. 925 1.39 fvdl * When called the mbuf pointers are not necessarily correct, 926 1.39 fvdl * dsosp points to what ought to be in m_data and left contains 927 1.39 fvdl * what ought to be in m_len. 928 1.12 mycroft * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 929 1.1 cgd * cases. (The macros use the vars. dpos and dpos2) 930 1.1 cgd */ 931 1.24 christos int 932 1.12 mycroft nfsm_disct(mdp, dposp, siz, left, cp2) 933 1.1 cgd struct mbuf **mdp; 934 1.1 cgd caddr_t *dposp; 935 1.1 cgd int siz; 936 1.1 cgd int left; 937 1.1 cgd caddr_t *cp2; 938 1.1 cgd { 939 1.39 fvdl register struct mbuf *m1, *m2; 940 1.39 fvdl struct mbuf *havebuf = NULL; 941 1.39 fvdl caddr_t src = *dposp; 942 1.39 fvdl caddr_t dst; 943 1.39 fvdl int len; 944 1.39 fvdl 945 1.39 fvdl #ifdef DEBUG 946 1.39 fvdl if (left < 0) 947 1.39 fvdl panic("nfsm_disct: left < 0"); 948 1.39 fvdl #endif 949 1.39 fvdl m1 = *mdp; 950 1.39 fvdl /* 951 1.39 fvdl * Skip through the mbuf chain looking for an mbuf with 952 1.39 fvdl * some data. If the first mbuf found has enough data 953 1.39 fvdl * and it is correctly aligned return it. 954 1.39 fvdl */ 955 1.1 cgd while (left == 0) { 956 1.39 fvdl havebuf = m1; 957 1.39 fvdl *mdp = m1 = m1->m_next; 958 1.39 fvdl if (m1 == NULL) 959 1.1 cgd return (EBADRPC); 960 1.39 fvdl src = mtod(m1, caddr_t); 961 1.39 fvdl left = m1->m_len; 962 1.39 fvdl /* 963 1.39 fvdl * If we start a new mbuf and it is big enough 964 1.39 fvdl * and correctly aligned just return it, don't 965 1.39 fvdl * do any pull up. 966 1.39 fvdl */ 967 1.39 fvdl if (left >= siz && nfsm_aligned(src)) { 968 1.39 fvdl *cp2 = src; 969 1.39 fvdl *dposp = src + siz; 970 1.39 fvdl return (0); 971 1.39 fvdl } 972 1.1 cgd } 973 1.39 fvdl if (m1->m_flags & M_EXT) { 974 1.39 fvdl if (havebuf) { 975 1.39 fvdl /* If the first mbuf with data has external data 976 1.39 fvdl * and there is a previous empty mbuf use it 977 1.39 fvdl * to move the data into. 978 1.39 fvdl */ 979 1.39 fvdl m2 = m1; 980 1.39 fvdl *mdp = m1 = havebuf; 981 1.39 fvdl if (m1->m_flags & M_EXT) { 982 1.41 thorpej MEXTREMOVE(m1); 983 1.1 cgd } 984 1.39 fvdl } else { 985 1.39 fvdl /* 986 1.39 fvdl * If the first mbuf has a external data 987 1.39 fvdl * and there is no previous empty mbuf 988 1.39 fvdl * allocate a new mbuf and move the external 989 1.39 fvdl * data to the new mbuf. Also make the first 990 1.39 fvdl * mbuf look empty. 991 1.39 fvdl */ 992 1.39 fvdl m2 = m_get(M_WAIT, MT_DATA); 993 1.39 fvdl m2->m_ext = m1->m_ext; 994 1.39 fvdl m2->m_data = src; 995 1.39 fvdl m2->m_len = left; 996 1.41 thorpej MCLADDREFERENCE(m1, m2); 997 1.41 thorpej MEXTREMOVE(m1); 998 1.39 fvdl m2->m_next = m1->m_next; 999 1.39 fvdl m1->m_next = m2; 1000 1.1 cgd } 1001 1.39 fvdl m1->m_len = 0; 1002 1.39 fvdl dst = m1->m_dat; 1003 1.39 fvdl } else { 1004 1.39 fvdl /* 1005 1.39 fvdl * If the first mbuf has no external data 1006 1.39 fvdl * move the data to the front of the mbuf. 1007 1.39 fvdl */ 1008 1.39 fvdl if ((dst = m1->m_dat) != src) 1009 1.39 fvdl ovbcopy(src, dst, left); 1010 1.39 fvdl dst += left; 1011 1.39 fvdl m1->m_len = left; 1012 1.39 fvdl m2 = m1->m_next; 1013 1.1 cgd } 1014 1.39 fvdl m1->m_flags &= ~M_PKTHDR; 1015 1.39 fvdl *cp2 = m1->m_data = m1->m_dat; /* data is at beginning of buffer */ 1016 1.39 fvdl *dposp = mtod(m1, caddr_t) + siz; 1017 1.39 fvdl /* 1018 1.39 fvdl * Loop through mbufs pulling data up into first mbuf until 1019 1.39 fvdl * the first mbuf is full or there is no more data to 1020 1.39 fvdl * pullup. 1021 1.39 fvdl */ 1022 1.39 fvdl while ((len = (MLEN - m1->m_len)) != 0 && m2) { 1023 1.39 fvdl if ((len = min(len, m2->m_len)) != 0) 1024 1.39 fvdl bcopy(m2->m_data, dst, len); 1025 1.39 fvdl m1->m_len += len; 1026 1.39 fvdl dst += len; 1027 1.39 fvdl m2->m_data += len; 1028 1.39 fvdl m2->m_len -= len; 1029 1.39 fvdl m2 = m2->m_next; 1030 1.39 fvdl } 1031 1.39 fvdl if (m1->m_len < siz) 1032 1.39 fvdl return (EBADRPC); 1033 1.1 cgd return (0); 1034 1.1 cgd } 1035 1.1 cgd 1036 1.1 cgd /* 1037 1.1 cgd * Advance the position in the mbuf chain. 1038 1.1 cgd */ 1039 1.24 christos int 1040 1.1 cgd nfs_adv(mdp, dposp, offs, left) 1041 1.1 cgd struct mbuf **mdp; 1042 1.1 cgd caddr_t *dposp; 1043 1.1 cgd int offs; 1044 1.1 cgd int left; 1045 1.1 cgd { 1046 1.1 cgd register struct mbuf *m; 1047 1.1 cgd register int s; 1048 1.1 cgd 1049 1.1 cgd m = *mdp; 1050 1.1 cgd s = left; 1051 1.1 cgd while (s < offs) { 1052 1.1 cgd offs -= s; 1053 1.1 cgd m = m->m_next; 1054 1.1 cgd if (m == NULL) 1055 1.1 cgd return (EBADRPC); 1056 1.1 cgd s = m->m_len; 1057 1.1 cgd } 1058 1.1 cgd *mdp = m; 1059 1.1 cgd *dposp = mtod(m, caddr_t)+offs; 1060 1.1 cgd return (0); 1061 1.1 cgd } 1062 1.1 cgd 1063 1.1 cgd /* 1064 1.1 cgd * Copy a string into mbufs for the hard cases... 1065 1.1 cgd */ 1066 1.24 christos int 1067 1.1 cgd nfsm_strtmbuf(mb, bpos, cp, siz) 1068 1.1 cgd struct mbuf **mb; 1069 1.1 cgd char **bpos; 1070 1.33 cgd const char *cp; 1071 1.1 cgd long siz; 1072 1.1 cgd { 1073 1.24 christos register struct mbuf *m1 = NULL, *m2; 1074 1.1 cgd long left, xfer, len, tlen; 1075 1.22 cgd u_int32_t *tl; 1076 1.1 cgd int putsize; 1077 1.1 cgd 1078 1.1 cgd putsize = 1; 1079 1.1 cgd m2 = *mb; 1080 1.12 mycroft left = M_TRAILINGSPACE(m2); 1081 1.1 cgd if (left > 0) { 1082 1.22 cgd tl = ((u_int32_t *)(*bpos)); 1083 1.1 cgd *tl++ = txdr_unsigned(siz); 1084 1.1 cgd putsize = 0; 1085 1.1 cgd left -= NFSX_UNSIGNED; 1086 1.1 cgd m2->m_len += NFSX_UNSIGNED; 1087 1.1 cgd if (left > 0) { 1088 1.1 cgd bcopy(cp, (caddr_t) tl, left); 1089 1.1 cgd siz -= left; 1090 1.1 cgd cp += left; 1091 1.1 cgd m2->m_len += left; 1092 1.1 cgd left = 0; 1093 1.1 cgd } 1094 1.1 cgd } 1095 1.12 mycroft /* Loop around adding mbufs */ 1096 1.1 cgd while (siz > 0) { 1097 1.1 cgd MGET(m1, M_WAIT, MT_DATA); 1098 1.1 cgd if (siz > MLEN) 1099 1.1 cgd MCLGET(m1, M_WAIT); 1100 1.1 cgd m1->m_len = NFSMSIZ(m1); 1101 1.1 cgd m2->m_next = m1; 1102 1.1 cgd m2 = m1; 1103 1.22 cgd tl = mtod(m1, u_int32_t *); 1104 1.1 cgd tlen = 0; 1105 1.1 cgd if (putsize) { 1106 1.1 cgd *tl++ = txdr_unsigned(siz); 1107 1.1 cgd m1->m_len -= NFSX_UNSIGNED; 1108 1.1 cgd tlen = NFSX_UNSIGNED; 1109 1.1 cgd putsize = 0; 1110 1.1 cgd } 1111 1.1 cgd if (siz < m1->m_len) { 1112 1.1 cgd len = nfsm_rndup(siz); 1113 1.1 cgd xfer = siz; 1114 1.1 cgd if (xfer < len) 1115 1.1 cgd *(tl+(xfer>>2)) = 0; 1116 1.1 cgd } else { 1117 1.1 cgd xfer = len = m1->m_len; 1118 1.1 cgd } 1119 1.1 cgd bcopy(cp, (caddr_t) tl, xfer); 1120 1.1 cgd m1->m_len = len+tlen; 1121 1.1 cgd siz -= xfer; 1122 1.1 cgd cp += xfer; 1123 1.1 cgd } 1124 1.1 cgd *mb = m1; 1125 1.1 cgd *bpos = mtod(m1, caddr_t)+m1->m_len; 1126 1.1 cgd return (0); 1127 1.1 cgd } 1128 1.1 cgd 1129 1.49 fvdl /* 1130 1.49 fvdl * Directory caching routines. They work as follows: 1131 1.49 fvdl * - a cache is maintained per VDIR nfsnode. 1132 1.49 fvdl * - for each offset cookie that is exported to userspace, and can 1133 1.49 fvdl * thus be thrown back at us as an offset to VOP_READDIR, store 1134 1.49 fvdl * information in the cache. 1135 1.49 fvdl * - cached are: 1136 1.49 fvdl * - cookie itself 1137 1.49 fvdl * - blocknumber (essentially just a search key in the buffer cache) 1138 1.49 fvdl * - entry number in block. 1139 1.49 fvdl * - offset cookie of block in which this entry is stored 1140 1.49 fvdl * - 32 bit cookie if NFSMNT_XLATECOOKIE is used. 1141 1.49 fvdl * - entries are looked up in a hash table 1142 1.49 fvdl * - also maintained is an LRU list of entries, used to determine 1143 1.49 fvdl * which ones to delete if the cache grows too large. 1144 1.49 fvdl * - if 32 <-> 64 translation mode is requested for a filesystem, 1145 1.49 fvdl * the cache also functions as a translation table 1146 1.49 fvdl * - in the translation case, invalidating the cache does not mean 1147 1.49 fvdl * flushing it, but just marking entries as invalid, except for 1148 1.49 fvdl * the <64bit cookie, 32bitcookie> pair which is still valid, to 1149 1.49 fvdl * still be able to use the cache as a translation table. 1150 1.49 fvdl * - 32 bit cookies are uniquely created by combining the hash table 1151 1.49 fvdl * entry value, and one generation count per hash table entry, 1152 1.49 fvdl * incremented each time an entry is appended to the chain. 1153 1.49 fvdl * - the cache is invalidated each time a direcory is modified 1154 1.49 fvdl * - sanity checks are also done; if an entry in a block turns 1155 1.49 fvdl * out not to have a matching cookie, the cache is invalidated 1156 1.49 fvdl * and a new block starting from the wanted offset is fetched from 1157 1.49 fvdl * the server. 1158 1.49 fvdl * - directory entries as read from the server are extended to contain 1159 1.49 fvdl * the 64bit and, optionally, the 32bit cookies, for sanity checking 1160 1.49 fvdl * the cache and exporting them to userspace through the cookie 1161 1.49 fvdl * argument to VOP_READDIR. 1162 1.49 fvdl */ 1163 1.49 fvdl 1164 1.46 fvdl u_long 1165 1.46 fvdl nfs_dirhash(off) 1166 1.46 fvdl off_t off; 1167 1.46 fvdl { 1168 1.46 fvdl int i; 1169 1.46 fvdl char *cp = (char *)&off; 1170 1.46 fvdl u_long sum = 0L; 1171 1.46 fvdl 1172 1.46 fvdl for (i = 0 ; i < sizeof (off); i++) 1173 1.46 fvdl sum += *cp++; 1174 1.46 fvdl 1175 1.46 fvdl return sum; 1176 1.46 fvdl } 1177 1.46 fvdl 1178 1.49 fvdl void 1179 1.49 fvdl nfs_initdircache(vp) 1180 1.49 fvdl struct vnode *vp; 1181 1.49 fvdl { 1182 1.49 fvdl struct nfsnode *np = VTONFS(vp); 1183 1.49 fvdl struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1184 1.49 fvdl 1185 1.49 fvdl np->n_dircachesize = 0; 1186 1.49 fvdl np->n_dblkno = 1; 1187 1.49 fvdl np->n_dircache = 1188 1.53 chs hashinit(NFS_DIRHASHSIZ, M_NFSDIROFF, M_WAITOK, &nfsdirhashmask); 1189 1.49 fvdl TAILQ_INIT(&np->n_dirchain); 1190 1.49 fvdl if (nmp->nm_flag & NFSMNT_XLATECOOKIE) { 1191 1.49 fvdl MALLOC(np->n_dirgens, unsigned *, 1192 1.49 fvdl NFS_DIRHASHSIZ * sizeof (unsigned), M_NFSDIROFF, 1193 1.49 fvdl M_WAITOK); 1194 1.49 fvdl bzero((caddr_t)np->n_dirgens, 1195 1.49 fvdl NFS_DIRHASHSIZ * sizeof (unsigned)); 1196 1.49 fvdl } 1197 1.49 fvdl } 1198 1.49 fvdl 1199 1.49 fvdl static struct nfsdircache dzero = {0, 0, {0, 0}, {0, 0}, 0, 0, 0}; 1200 1.46 fvdl 1201 1.46 fvdl struct nfsdircache * 1202 1.49 fvdl nfs_searchdircache(vp, off, do32, hashent) 1203 1.46 fvdl struct vnode *vp; 1204 1.46 fvdl off_t off; 1205 1.49 fvdl int do32; 1206 1.49 fvdl int *hashent; 1207 1.49 fvdl { 1208 1.49 fvdl struct nfsdirhashhead *ndhp; 1209 1.49 fvdl struct nfsdircache *ndp = NULL; 1210 1.49 fvdl struct nfsnode *np = VTONFS(vp); 1211 1.49 fvdl unsigned ent; 1212 1.49 fvdl 1213 1.49 fvdl /* 1214 1.49 fvdl * Zero is always a valid cookie. 1215 1.49 fvdl */ 1216 1.49 fvdl if (off == 0) 1217 1.49 fvdl return &dzero; 1218 1.49 fvdl 1219 1.49 fvdl /* 1220 1.49 fvdl * We use a 32bit cookie as search key, directly reconstruct 1221 1.49 fvdl * the hashentry. Else use the hashfunction. 1222 1.49 fvdl */ 1223 1.49 fvdl if (do32) { 1224 1.49 fvdl ent = (u_int32_t)off >> 24; 1225 1.49 fvdl if (ent >= NFS_DIRHASHSIZ) 1226 1.49 fvdl return NULL; 1227 1.49 fvdl ndhp = &np->n_dircache[ent]; 1228 1.49 fvdl } else { 1229 1.49 fvdl ndhp = NFSDIRHASH(np, off); 1230 1.49 fvdl } 1231 1.49 fvdl 1232 1.49 fvdl if (hashent) 1233 1.49 fvdl *hashent = (int)(ndhp - np->n_dircache); 1234 1.49 fvdl if (do32) { 1235 1.49 fvdl for (ndp = ndhp->lh_first; ndp; ndp = ndp->dc_hash.le_next) { 1236 1.49 fvdl if (ndp->dc_cookie32 == (u_int32_t)off) { 1237 1.49 fvdl /* 1238 1.49 fvdl * An invalidated entry will become the 1239 1.49 fvdl * start of a new block fetched from 1240 1.49 fvdl * the server. 1241 1.49 fvdl */ 1242 1.49 fvdl if (ndp->dc_blkno == -1) { 1243 1.49 fvdl ndp->dc_blkcookie = ndp->dc_cookie; 1244 1.49 fvdl ndp->dc_blkno = np->n_dblkno++; 1245 1.49 fvdl ndp->dc_entry = 0; 1246 1.49 fvdl } 1247 1.49 fvdl break; 1248 1.49 fvdl } 1249 1.49 fvdl } 1250 1.49 fvdl } else { 1251 1.49 fvdl for (ndp = ndhp->lh_first; ndp; ndp = ndp->dc_hash.le_next) 1252 1.49 fvdl if (ndp->dc_cookie == off) 1253 1.49 fvdl break; 1254 1.49 fvdl } 1255 1.49 fvdl return ndp; 1256 1.49 fvdl } 1257 1.49 fvdl 1258 1.49 fvdl 1259 1.49 fvdl struct nfsdircache * 1260 1.49 fvdl nfs_enterdircache(vp, off, blkoff, en, blkno) 1261 1.49 fvdl struct vnode *vp; 1262 1.49 fvdl off_t off, blkoff; 1263 1.46 fvdl daddr_t blkno; 1264 1.49 fvdl int en; 1265 1.46 fvdl { 1266 1.46 fvdl struct nfsnode *np = VTONFS(vp); 1267 1.46 fvdl struct nfsdirhashhead *ndhp; 1268 1.49 fvdl struct nfsdircache *ndp = NULL, *first; 1269 1.49 fvdl struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1270 1.49 fvdl int hashent, gen, overwrite; 1271 1.46 fvdl 1272 1.49 fvdl if (!np->n_dircache) 1273 1.49 fvdl /* 1274 1.49 fvdl * XXX would like to do this in nfs_nget but vtype 1275 1.49 fvdl * isn't known at that time. 1276 1.49 fvdl */ 1277 1.49 fvdl nfs_initdircache(vp); 1278 1.50 fvdl 1279 1.50 fvdl /* 1280 1.50 fvdl * XXX refuse entries for offset 0. amd(8) erroneously sets 1281 1.50 fvdl * cookie 0 for the '.' entry, making this necessary. This 1282 1.50 fvdl * isn't so bad, as 0 is a special case anyway. 1283 1.50 fvdl */ 1284 1.50 fvdl if (off == 0) 1285 1.50 fvdl return &dzero; 1286 1.49 fvdl 1287 1.49 fvdl ndp = nfs_searchdircache(vp, off, 0, &hashent); 1288 1.49 fvdl 1289 1.49 fvdl if (ndp && ndp->dc_blkno != -1) { 1290 1.49 fvdl /* 1291 1.49 fvdl * Overwriting an old entry. Check if it's the same. 1292 1.49 fvdl * If so, just return. If not, remove the old entry. 1293 1.49 fvdl */ 1294 1.49 fvdl if (ndp->dc_blkcookie == blkoff && ndp->dc_entry == en) 1295 1.49 fvdl return ndp; 1296 1.49 fvdl TAILQ_REMOVE(&np->n_dirchain, ndp, dc_chain); 1297 1.49 fvdl LIST_REMOVE(ndp, dc_hash); 1298 1.49 fvdl FREE(ndp, M_NFSDIROFF); 1299 1.49 fvdl ndp = 0; 1300 1.46 fvdl } 1301 1.46 fvdl 1302 1.49 fvdl ndhp = &np->n_dircache[hashent]; 1303 1.46 fvdl 1304 1.49 fvdl if (!ndp) { 1305 1.49 fvdl MALLOC(ndp, struct nfsdircache *, sizeof (*ndp), M_NFSDIROFF, 1306 1.49 fvdl M_WAITOK); 1307 1.49 fvdl overwrite = 0; 1308 1.49 fvdl if (nmp->nm_flag & NFSMNT_XLATECOOKIE) { 1309 1.49 fvdl /* 1310 1.49 fvdl * We're allocating a new entry, so bump the 1311 1.49 fvdl * generation number. 1312 1.49 fvdl */ 1313 1.49 fvdl gen = ++np->n_dirgens[hashent]; 1314 1.49 fvdl if (gen == 0) { 1315 1.49 fvdl np->n_dirgens[hashent]++; 1316 1.49 fvdl gen++; 1317 1.49 fvdl } 1318 1.49 fvdl ndp->dc_cookie32 = (hashent << 24) | (gen & 0xffffff); 1319 1.49 fvdl } 1320 1.49 fvdl } else 1321 1.49 fvdl overwrite = 1; 1322 1.46 fvdl 1323 1.46 fvdl /* 1324 1.46 fvdl * If the entry number is 0, we are at the start of a new block, so 1325 1.46 fvdl * allocate a new blocknumber. 1326 1.46 fvdl */ 1327 1.46 fvdl if (en == 0) 1328 1.46 fvdl ndp->dc_blkno = np->n_dblkno++; 1329 1.46 fvdl else 1330 1.46 fvdl ndp->dc_blkno = blkno; 1331 1.49 fvdl 1332 1.49 fvdl ndp->dc_cookie = off; 1333 1.49 fvdl ndp->dc_blkcookie = blkoff; 1334 1.46 fvdl ndp->dc_entry = en; 1335 1.46 fvdl 1336 1.49 fvdl if (overwrite) 1337 1.49 fvdl return ndp; 1338 1.49 fvdl 1339 1.46 fvdl /* 1340 1.46 fvdl * If the maximum directory cookie cache size has been reached 1341 1.46 fvdl * for this node, take one off the front. The idea is that 1342 1.46 fvdl * directories are typically read front-to-back once, so that 1343 1.46 fvdl * the oldest entries can be thrown away without much performance 1344 1.46 fvdl * loss. 1345 1.46 fvdl */ 1346 1.46 fvdl if (np->n_dircachesize == NFS_MAXDIRCACHE) { 1347 1.46 fvdl first = np->n_dirchain.tqh_first; 1348 1.46 fvdl TAILQ_REMOVE(&np->n_dirchain, first, dc_chain); 1349 1.46 fvdl LIST_REMOVE(first, dc_hash); 1350 1.46 fvdl FREE(first, M_NFSDIROFF); 1351 1.46 fvdl } else 1352 1.46 fvdl np->n_dircachesize++; 1353 1.46 fvdl 1354 1.46 fvdl LIST_INSERT_HEAD(ndhp, ndp, dc_hash); 1355 1.46 fvdl TAILQ_INSERT_TAIL(&np->n_dirchain, ndp, dc_chain); 1356 1.46 fvdl return ndp; 1357 1.46 fvdl } 1358 1.46 fvdl 1359 1.46 fvdl void 1360 1.49 fvdl nfs_invaldircache(vp, forcefree) 1361 1.46 fvdl struct vnode *vp; 1362 1.49 fvdl int forcefree; 1363 1.46 fvdl { 1364 1.46 fvdl struct nfsnode *np = VTONFS(vp); 1365 1.46 fvdl struct nfsdircache *ndp = NULL; 1366 1.49 fvdl struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1367 1.46 fvdl 1368 1.46 fvdl #ifdef DIAGNOSTIC 1369 1.46 fvdl if (vp->v_type != VDIR) 1370 1.46 fvdl panic("nfs: invaldircache: not dir"); 1371 1.46 fvdl #endif 1372 1.46 fvdl 1373 1.46 fvdl if (!np->n_dircache) 1374 1.46 fvdl return; 1375 1.46 fvdl 1376 1.49 fvdl if (!(nmp->nm_flag & NFSMNT_XLATECOOKIE) || forcefree) { 1377 1.49 fvdl while ((ndp = np->n_dirchain.tqh_first)) { 1378 1.49 fvdl TAILQ_REMOVE(&np->n_dirchain, ndp, dc_chain); 1379 1.49 fvdl LIST_REMOVE(ndp, dc_hash); 1380 1.49 fvdl FREE(ndp, M_NFSDIROFF); 1381 1.49 fvdl } 1382 1.49 fvdl np->n_dircachesize = 0; 1383 1.49 fvdl if (forcefree && np->n_dirgens) { 1384 1.49 fvdl FREE(np->n_dirgens, M_NFSDIROFF); 1385 1.49 fvdl } 1386 1.49 fvdl } else { 1387 1.49 fvdl for (ndp = np->n_dirchain.tqh_first; ndp; 1388 1.49 fvdl ndp = ndp->dc_chain.tqe_next) 1389 1.49 fvdl ndp->dc_blkno = -1; 1390 1.46 fvdl } 1391 1.46 fvdl 1392 1.49 fvdl np->n_dblkno = 1; 1393 1.46 fvdl } 1394 1.46 fvdl 1395 1.1 cgd /* 1396 1.35 thorpej * Called once before VFS init to initialize shared and 1397 1.35 thorpej * server-specific data structures. 1398 1.1 cgd */ 1399 1.24 christos void 1400 1.1 cgd nfs_init() 1401 1.1 cgd { 1402 1.1 cgd 1403 1.25 fvdl #if !defined(alpha) && defined(DIAGNOSTIC) 1404 1.25 fvdl /* 1405 1.25 fvdl * Check to see if major data structures haven't bloated. 1406 1.25 fvdl */ 1407 1.25 fvdl if (sizeof (struct nfsnode) > NFS_NODEALLOC) { 1408 1.32 christos printf("struct nfsnode bloated (> %dbytes)\n", NFS_NODEALLOC); 1409 1.32 christos printf("Try reducing NFS_SMALLFH\n"); 1410 1.25 fvdl } 1411 1.25 fvdl if (sizeof (struct nfssvc_sock) > NFS_SVCALLOC) { 1412 1.32 christos printf("struct nfssvc_sock bloated (> %dbytes)\n",NFS_SVCALLOC); 1413 1.32 christos printf("Try reducing NFS_UIDHASHSIZ\n"); 1414 1.25 fvdl } 1415 1.25 fvdl if (sizeof (struct nfsuid) > NFS_UIDALLOC) { 1416 1.32 christos printf("struct nfsuid bloated (> %dbytes)\n",NFS_UIDALLOC); 1417 1.32 christos printf("Try unionizing the nu_nickname and nu_flag fields\n"); 1418 1.25 fvdl } 1419 1.25 fvdl #endif 1420 1.25 fvdl 1421 1.12 mycroft nfsrtt.pos = 0; 1422 1.1 cgd rpc_vers = txdr_unsigned(RPC_VER2); 1423 1.1 cgd rpc_call = txdr_unsigned(RPC_CALL); 1424 1.1 cgd rpc_reply = txdr_unsigned(RPC_REPLY); 1425 1.1 cgd rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 1426 1.1 cgd rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 1427 1.1 cgd rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 1428 1.12 mycroft rpc_autherr = txdr_unsigned(RPC_AUTHERR); 1429 1.1 cgd rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 1430 1.25 fvdl rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 1431 1.1 cgd nfs_prog = txdr_unsigned(NFS_PROG); 1432 1.25 fvdl nqnfs_prog = txdr_unsigned(NQNFS_PROG); 1433 1.1 cgd nfs_true = txdr_unsigned(TRUE); 1434 1.1 cgd nfs_false = txdr_unsigned(FALSE); 1435 1.12 mycroft nfs_xdrneg1 = txdr_unsigned(-1); 1436 1.25 fvdl nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 1437 1.25 fvdl if (nfs_ticks < 1) 1438 1.25 fvdl nfs_ticks = 1; 1439 1.2 glass #ifdef NFSSERVER 1440 1.12 mycroft nfsrv_init(0); /* Init server data structures */ 1441 1.1 cgd nfsrv_initcache(); /* Init the server request cache */ 1442 1.36 fvdl #endif /* NFSSERVER */ 1443 1.12 mycroft 1444 1.12 mycroft /* 1445 1.37 fvdl * Initialize the nqnfs data structures. 1446 1.12 mycroft */ 1447 1.12 mycroft if (nqnfsstarttime == 0) { 1448 1.12 mycroft nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease 1449 1.12 mycroft + nqsrv_clockskew + nqsrv_writeslack; 1450 1.12 mycroft NQLOADNOVRAM(nqnfsstarttime); 1451 1.18 mycroft CIRCLEQ_INIT(&nqtimerhead); 1452 1.53 chs nqfhhashtbl = hashinit(NQLCHSZ, M_NQLEASE, M_WAITOK, &nqfhhash); 1453 1.12 mycroft } 1454 1.12 mycroft 1455 1.1 cgd /* 1456 1.1 cgd * Initialize reply list and start timer 1457 1.1 cgd */ 1458 1.16 mycroft TAILQ_INIT(&nfs_reqq); 1459 1.24 christos nfs_timer(NULL); 1460 1.1 cgd } 1461 1.1 cgd 1462 1.38 thorpej #ifdef NFS 1463 1.35 thorpej /* 1464 1.35 thorpej * Called once at VFS init to initialize client-specific data structures. 1465 1.35 thorpej */ 1466 1.35 thorpej void 1467 1.35 thorpej nfs_vfs_init() 1468 1.35 thorpej { 1469 1.35 thorpej register int i; 1470 1.35 thorpej 1471 1.35 thorpej /* Ensure async daemons disabled */ 1472 1.35 thorpej for (i = 0; i < NFS_MAXASYNCDAEMON; i++) { 1473 1.35 thorpej nfs_iodwant[i] = (struct proc *)0; 1474 1.35 thorpej nfs_iodmount[i] = (struct nfsmount *)0; 1475 1.35 thorpej } 1476 1.35 thorpej nfs_nhinit(); /* Init the nfsnode table */ 1477 1.35 thorpej } 1478 1.35 thorpej 1479 1.1 cgd /* 1480 1.12 mycroft * Attribute cache routines. 1481 1.12 mycroft * nfs_loadattrcache() - loads or updates the cache contents from attributes 1482 1.12 mycroft * that are on the mbuf list 1483 1.12 mycroft * nfs_getattrcache() - returns valid attributes if found in cache, returns 1484 1.12 mycroft * error otherwise 1485 1.1 cgd */ 1486 1.12 mycroft 1487 1.12 mycroft /* 1488 1.12 mycroft * Load the attribute cache (that lives in the nfsnode entry) with 1489 1.12 mycroft * the values on the mbuf list and 1490 1.12 mycroft * Iff vap not NULL 1491 1.12 mycroft * copy the attributes to *vaper 1492 1.12 mycroft */ 1493 1.24 christos int 1494 1.45 fvdl nfsm_loadattrcache(vpp, mdp, dposp, vaper) 1495 1.12 mycroft struct vnode **vpp; 1496 1.12 mycroft struct mbuf **mdp; 1497 1.12 mycroft caddr_t *dposp; 1498 1.12 mycroft struct vattr *vaper; 1499 1.1 cgd { 1500 1.22 cgd register int32_t t1; 1501 1.25 fvdl caddr_t cp2; 1502 1.25 fvdl int error = 0; 1503 1.12 mycroft struct mbuf *md; 1504 1.45 fvdl int v3 = NFS_ISV3(*vpp); 1505 1.1 cgd 1506 1.12 mycroft md = *mdp; 1507 1.25 fvdl t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 1508 1.25 fvdl error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2); 1509 1.24 christos if (error) 1510 1.12 mycroft return (error); 1511 1.45 fvdl return nfs_loadattrcache(vpp, (struct nfs_fattr *)cp2, vaper); 1512 1.45 fvdl } 1513 1.45 fvdl 1514 1.45 fvdl int 1515 1.45 fvdl nfs_loadattrcache(vpp, fp, vaper) 1516 1.45 fvdl struct vnode **vpp; 1517 1.45 fvdl struct nfs_fattr *fp; 1518 1.45 fvdl struct vattr *vaper; 1519 1.45 fvdl { 1520 1.45 fvdl register struct vnode *vp = *vpp; 1521 1.45 fvdl register struct vattr *vap; 1522 1.45 fvdl int v3 = NFS_ISV3(vp); 1523 1.45 fvdl enum vtype vtyp; 1524 1.45 fvdl u_short vmode; 1525 1.45 fvdl struct timespec mtime; 1526 1.45 fvdl struct vnode *nvp; 1527 1.45 fvdl int32_t rdev; 1528 1.45 fvdl register struct nfsnode *np; 1529 1.45 fvdl extern int (**spec_nfsv2nodeop_p) __P((void *)); 1530 1.45 fvdl 1531 1.25 fvdl if (v3) { 1532 1.25 fvdl vtyp = nfsv3tov_type(fp->fa_type); 1533 1.25 fvdl vmode = fxdr_unsigned(u_short, fp->fa_mode); 1534 1.25 fvdl rdev = makedev(fxdr_unsigned(u_char, fp->fa3_rdev.specdata1), 1535 1.25 fvdl fxdr_unsigned(u_char, fp->fa3_rdev.specdata2)); 1536 1.25 fvdl fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 1537 1.12 mycroft } else { 1538 1.25 fvdl vtyp = nfsv2tov_type(fp->fa_type); 1539 1.25 fvdl vmode = fxdr_unsigned(u_short, fp->fa_mode); 1540 1.25 fvdl if (vtyp == VNON || vtyp == VREG) 1541 1.25 fvdl vtyp = IFTOVT(vmode); 1542 1.25 fvdl rdev = fxdr_unsigned(int32_t, fp->fa2_rdev); 1543 1.25 fvdl fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 1544 1.25 fvdl 1545 1.25 fvdl /* 1546 1.25 fvdl * Really ugly NFSv2 kludge. 1547 1.25 fvdl */ 1548 1.25 fvdl if (vtyp == VCHR && rdev == 0xffffffff) 1549 1.25 fvdl vtyp = VFIFO; 1550 1.12 mycroft } 1551 1.25 fvdl 1552 1.12 mycroft /* 1553 1.12 mycroft * If v_type == VNON it is a new node, so fill in the v_type, 1554 1.12 mycroft * n_mtime fields. Check to see if it represents a special 1555 1.12 mycroft * device, and if so, check for a possible alias. Once the 1556 1.12 mycroft * correct vnode has been obtained, fill in the rest of the 1557 1.12 mycroft * information. 1558 1.12 mycroft */ 1559 1.12 mycroft np = VTONFS(vp); 1560 1.28 fvdl if (vp->v_type != vtyp) { 1561 1.25 fvdl vp->v_type = vtyp; 1562 1.12 mycroft if (vp->v_type == VFIFO) { 1563 1.27 thorpej #ifndef FIFO 1564 1.27 thorpej return (EOPNOTSUPP); 1565 1.27 thorpej #else 1566 1.24 christos extern int (**fifo_nfsv2nodeop_p) __P((void *)); 1567 1.12 mycroft vp->v_op = fifo_nfsv2nodeop_p; 1568 1.27 thorpej #endif /* FIFO */ 1569 1.12 mycroft } 1570 1.12 mycroft if (vp->v_type == VCHR || vp->v_type == VBLK) { 1571 1.12 mycroft vp->v_op = spec_nfsv2nodeop_p; 1572 1.24 christos nvp = checkalias(vp, (dev_t)rdev, vp->v_mount); 1573 1.24 christos if (nvp) { 1574 1.12 mycroft /* 1575 1.12 mycroft * Discard unneeded vnode, but save its nfsnode. 1576 1.25 fvdl * Since the nfsnode does not have a lock, its 1577 1.25 fvdl * vnode lock has to be carried over. 1578 1.12 mycroft */ 1579 1.25 fvdl nvp->v_vnlock = vp->v_vnlock; 1580 1.25 fvdl vp->v_vnlock = NULL; 1581 1.12 mycroft nvp->v_data = vp->v_data; 1582 1.12 mycroft vp->v_data = NULL; 1583 1.12 mycroft vp->v_op = spec_vnodeop_p; 1584 1.12 mycroft vrele(vp); 1585 1.12 mycroft vgone(vp); 1586 1.12 mycroft /* 1587 1.12 mycroft * Reinitialize aliased node. 1588 1.12 mycroft */ 1589 1.12 mycroft np->n_vnode = nvp; 1590 1.12 mycroft *vpp = vp = nvp; 1591 1.12 mycroft } 1592 1.12 mycroft } 1593 1.23 jtc np->n_mtime = mtime.tv_sec; 1594 1.12 mycroft } 1595 1.49 fvdl vap = np->n_vattr; 1596 1.12 mycroft vap->va_type = vtyp; 1597 1.42 mycroft vap->va_mode = vmode & ALLPERMS; 1598 1.12 mycroft vap->va_rdev = (dev_t)rdev; 1599 1.12 mycroft vap->va_mtime = mtime; 1600 1.12 mycroft vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 1601 1.25 fvdl if (v3) { 1602 1.25 fvdl vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1603 1.25 fvdl vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 1604 1.25 fvdl vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 1605 1.25 fvdl fxdr_hyper(&fp->fa3_size, &vap->va_size); 1606 1.46 fvdl if (vtyp == VDIR) 1607 1.46 fvdl vap->va_blocksize = NFS_DIRFRAGSIZ; 1608 1.46 fvdl else 1609 1.46 fvdl vap->va_blocksize = NFS_FABLKSIZE; 1610 1.25 fvdl fxdr_hyper(&fp->fa3_used, &vap->va_bytes); 1611 1.25 fvdl vap->va_fileid = fxdr_unsigned(int32_t, 1612 1.25 fvdl fp->fa3_fileid.nfsuquad[1]); 1613 1.25 fvdl fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 1614 1.25 fvdl fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime); 1615 1.25 fvdl vap->va_flags = 0; 1616 1.25 fvdl vap->va_filerev = 0; 1617 1.12 mycroft } else { 1618 1.25 fvdl vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1619 1.25 fvdl vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 1620 1.25 fvdl vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 1621 1.25 fvdl vap->va_size = fxdr_unsigned(u_int32_t, fp->fa2_size); 1622 1.46 fvdl if (vtyp == VDIR) 1623 1.46 fvdl vap->va_blocksize = NFS_DIRFRAGSIZ; 1624 1.46 fvdl else 1625 1.46 fvdl vap->va_blocksize = 1626 1.46 fvdl fxdr_unsigned(int32_t, fp->fa2_blocksize); 1627 1.25 fvdl vap->va_bytes = fxdr_unsigned(int32_t, fp->fa2_blocks) 1628 1.25 fvdl * NFS_FABLKSIZE; 1629 1.25 fvdl vap->va_fileid = fxdr_unsigned(int32_t, fp->fa2_fileid); 1630 1.25 fvdl fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 1631 1.12 mycroft vap->va_flags = 0; 1632 1.25 fvdl vap->va_ctime.tv_sec = fxdr_unsigned(u_int32_t, 1633 1.25 fvdl fp->fa2_ctime.nfsv2_sec); 1634 1.25 fvdl vap->va_ctime.tv_nsec = 0; 1635 1.25 fvdl vap->va_gen = fxdr_unsigned(u_int32_t,fp->fa2_ctime.nfsv2_usec); 1636 1.12 mycroft vap->va_filerev = 0; 1637 1.12 mycroft } 1638 1.12 mycroft if (vap->va_size != np->n_size) { 1639 1.12 mycroft if (vap->va_type == VREG) { 1640 1.12 mycroft if (np->n_flag & NMODIFIED) { 1641 1.12 mycroft if (vap->va_size < np->n_size) 1642 1.12 mycroft vap->va_size = np->n_size; 1643 1.12 mycroft else 1644 1.12 mycroft np->n_size = vap->va_size; 1645 1.12 mycroft } else 1646 1.12 mycroft np->n_size = vap->va_size; 1647 1.51 mrg #if defined(UVM) 1648 1.51 mrg uvm_vnp_setsize(vp, np->n_size); 1649 1.51 mrg #else 1650 1.44 drochner vnode_pager_setsize(vp, np->n_size); 1651 1.51 mrg #endif 1652 1.12 mycroft } else 1653 1.12 mycroft np->n_size = vap->va_size; 1654 1.12 mycroft } 1655 1.12 mycroft np->n_attrstamp = time.tv_sec; 1656 1.12 mycroft if (vaper != NULL) { 1657 1.12 mycroft bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 1658 1.12 mycroft if (np->n_flag & NCHG) { 1659 1.25 fvdl if (np->n_flag & NACC) 1660 1.25 fvdl vaper->va_atime = np->n_atim; 1661 1.25 fvdl if (np->n_flag & NUPD) 1662 1.25 fvdl vaper->va_mtime = np->n_mtim; 1663 1.12 mycroft } 1664 1.12 mycroft } 1665 1.12 mycroft return (0); 1666 1.12 mycroft } 1667 1.12 mycroft 1668 1.12 mycroft /* 1669 1.12 mycroft * Check the time stamp 1670 1.12 mycroft * If the cache is valid, copy contents to *vap and return 0 1671 1.12 mycroft * otherwise return an error 1672 1.12 mycroft */ 1673 1.24 christos int 1674 1.12 mycroft nfs_getattrcache(vp, vaper) 1675 1.12 mycroft register struct vnode *vp; 1676 1.12 mycroft struct vattr *vaper; 1677 1.12 mycroft { 1678 1.12 mycroft register struct nfsnode *np = VTONFS(vp); 1679 1.12 mycroft register struct vattr *vap; 1680 1.12 mycroft 1681 1.25 fvdl if ((time.tv_sec - np->n_attrstamp) >= NFS_ATTRTIMEO(np)) { 1682 1.12 mycroft nfsstats.attrcache_misses++; 1683 1.12 mycroft return (ENOENT); 1684 1.12 mycroft } 1685 1.12 mycroft nfsstats.attrcache_hits++; 1686 1.49 fvdl vap = np->n_vattr; 1687 1.12 mycroft if (vap->va_size != np->n_size) { 1688 1.12 mycroft if (vap->va_type == VREG) { 1689 1.12 mycroft if (np->n_flag & NMODIFIED) { 1690 1.12 mycroft if (vap->va_size < np->n_size) 1691 1.12 mycroft vap->va_size = np->n_size; 1692 1.12 mycroft else 1693 1.12 mycroft np->n_size = vap->va_size; 1694 1.12 mycroft } else 1695 1.12 mycroft np->n_size = vap->va_size; 1696 1.51 mrg #if defined(UVM) 1697 1.51 mrg uvm_vnp_setsize(vp, np->n_size); 1698 1.51 mrg #else 1699 1.44 drochner vnode_pager_setsize(vp, np->n_size); 1700 1.51 mrg #endif 1701 1.12 mycroft } else 1702 1.12 mycroft np->n_size = vap->va_size; 1703 1.12 mycroft } 1704 1.12 mycroft bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr)); 1705 1.12 mycroft if (np->n_flag & NCHG) { 1706 1.25 fvdl if (np->n_flag & NACC) 1707 1.25 fvdl vaper->va_atime = np->n_atim; 1708 1.25 fvdl if (np->n_flag & NUPD) 1709 1.25 fvdl vaper->va_mtime = np->n_mtim; 1710 1.1 cgd } 1711 1.12 mycroft return (0); 1712 1.1 cgd } 1713 1.48 fvdl 1714 1.48 fvdl /* 1715 1.48 fvdl * Heuristic to see if the server XDR encodes directory cookies or not. 1716 1.48 fvdl * it is not supposed to, but a lot of servers may do this. Also, since 1717 1.48 fvdl * most/all servers will implement V2 as well, it is expected that they 1718 1.48 fvdl * may return just 32 bits worth of cookie information, so we need to 1719 1.48 fvdl * find out in which 32 bits this information is available. We do this 1720 1.48 fvdl * to avoid trouble with emulated binaries that can't handle 64 bit 1721 1.48 fvdl * directory offsets. 1722 1.48 fvdl */ 1723 1.48 fvdl 1724 1.48 fvdl void 1725 1.48 fvdl nfs_cookieheuristic(vp, flagp, p, cred) 1726 1.48 fvdl struct vnode *vp; 1727 1.48 fvdl int *flagp; 1728 1.48 fvdl struct proc *p; 1729 1.48 fvdl struct ucred *cred; 1730 1.48 fvdl { 1731 1.48 fvdl struct uio auio; 1732 1.48 fvdl struct iovec aiov; 1733 1.48 fvdl caddr_t buf, cp; 1734 1.48 fvdl struct dirent *dp; 1735 1.48 fvdl off_t *cookies, *cop; 1736 1.48 fvdl int error, eof, nc, len; 1737 1.48 fvdl 1738 1.48 fvdl MALLOC(buf, caddr_t, NFS_DIRFRAGSIZ, M_TEMP, M_WAITOK); 1739 1.48 fvdl 1740 1.48 fvdl aiov.iov_base = buf; 1741 1.48 fvdl aiov.iov_len = NFS_DIRFRAGSIZ; 1742 1.48 fvdl auio.uio_iov = &aiov; 1743 1.48 fvdl auio.uio_iovcnt = 1; 1744 1.48 fvdl auio.uio_rw = UIO_READ; 1745 1.48 fvdl auio.uio_segflg = UIO_SYSSPACE; 1746 1.48 fvdl auio.uio_procp = p; 1747 1.48 fvdl auio.uio_resid = NFS_DIRFRAGSIZ; 1748 1.48 fvdl auio.uio_offset = 0; 1749 1.48 fvdl 1750 1.56 fvdl error = VOP_READDIR(vp, &auio, cred, &eof, &cookies, &nc); 1751 1.48 fvdl 1752 1.48 fvdl len = NFS_DIRFRAGSIZ - auio.uio_resid; 1753 1.48 fvdl if (error || len == 0) { 1754 1.48 fvdl FREE(buf, M_TEMP); 1755 1.48 fvdl FREE(cookies, M_TEMP); 1756 1.48 fvdl return; 1757 1.48 fvdl } 1758 1.48 fvdl 1759 1.48 fvdl /* 1760 1.48 fvdl * Find the first valid entry and look at its offset cookie. 1761 1.48 fvdl */ 1762 1.48 fvdl 1763 1.48 fvdl cp = buf; 1764 1.48 fvdl for (cop = cookies; len > 0; len -= dp->d_reclen) { 1765 1.48 fvdl dp = (struct dirent *)cp; 1766 1.48 fvdl if (dp->d_fileno != 0 && len >= dp->d_reclen) { 1767 1.48 fvdl if ((*cop >> 32) != 0 && (*cop & 0xffffffffLL) == 0) { 1768 1.48 fvdl *flagp |= NFSMNT_SWAPCOOKIE; 1769 1.49 fvdl nfs_invaldircache(vp, 0); 1770 1.48 fvdl nfs_vinvalbuf(vp, 0, cred, p, 1); 1771 1.48 fvdl } 1772 1.48 fvdl break; 1773 1.48 fvdl } 1774 1.48 fvdl cop++; 1775 1.48 fvdl cp += dp->d_reclen; 1776 1.48 fvdl } 1777 1.48 fvdl 1778 1.48 fvdl FREE(buf, M_TEMP); 1779 1.48 fvdl FREE(cookies, M_TEMP); 1780 1.48 fvdl } 1781 1.38 thorpej #endif /* NFS */ 1782 1.1 cgd 1783 1.1 cgd /* 1784 1.43 fvdl * Set up nameidata for a lookup() call and do it. 1785 1.43 fvdl * 1786 1.43 fvdl * If pubflag is set, this call is done for a lookup operation on the 1787 1.43 fvdl * public filehandle. In that case we allow crossing mountpoints and 1788 1.43 fvdl * absolute pathnames. However, the caller is expected to check that 1789 1.43 fvdl * the lookup result is within the public fs, and deny access if 1790 1.43 fvdl * it is not. 1791 1.1 cgd */ 1792 1.24 christos int 1793 1.43 fvdl nfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag, pubflag) 1794 1.1 cgd register struct nameidata *ndp; 1795 1.1 cgd fhandle_t *fhp; 1796 1.1 cgd int len; 1797 1.12 mycroft struct nfssvc_sock *slp; 1798 1.12 mycroft struct mbuf *nam; 1799 1.1 cgd struct mbuf **mdp; 1800 1.1 cgd caddr_t *dposp; 1801 1.25 fvdl struct vnode **retdirp; 1802 1.1 cgd struct proc *p; 1803 1.43 fvdl int kerbflag, pubflag; 1804 1.1 cgd { 1805 1.1 cgd register int i, rem; 1806 1.1 cgd register struct mbuf *md; 1807 1.43 fvdl register char *fromcp, *tocp, *cp; 1808 1.43 fvdl struct iovec aiov; 1809 1.43 fvdl struct uio auio; 1810 1.1 cgd struct vnode *dp; 1811 1.43 fvdl int error, rdonly, linklen; 1812 1.12 mycroft struct componentname *cnp = &ndp->ni_cnd; 1813 1.1 cgd 1814 1.25 fvdl *retdirp = (struct vnode *)0; 1815 1.12 mycroft MALLOC(cnp->cn_pnbuf, char *, len + 1, M_NAMEI, M_WAITOK); 1816 1.1 cgd /* 1817 1.1 cgd * Copy the name from the mbuf list to ndp->ni_pnbuf 1818 1.1 cgd * and set the various ndp fields appropriately. 1819 1.1 cgd */ 1820 1.1 cgd fromcp = *dposp; 1821 1.12 mycroft tocp = cnp->cn_pnbuf; 1822 1.1 cgd md = *mdp; 1823 1.1 cgd rem = mtod(md, caddr_t) + md->m_len - fromcp; 1824 1.1 cgd for (i = 0; i < len; i++) { 1825 1.1 cgd while (rem == 0) { 1826 1.1 cgd md = md->m_next; 1827 1.1 cgd if (md == NULL) { 1828 1.1 cgd error = EBADRPC; 1829 1.1 cgd goto out; 1830 1.1 cgd } 1831 1.1 cgd fromcp = mtod(md, caddr_t); 1832 1.1 cgd rem = md->m_len; 1833 1.1 cgd } 1834 1.43 fvdl if (*fromcp == '\0' || (!pubflag && *fromcp == '/')) { 1835 1.25 fvdl error = EACCES; 1836 1.1 cgd goto out; 1837 1.1 cgd } 1838 1.1 cgd *tocp++ = *fromcp++; 1839 1.1 cgd rem--; 1840 1.1 cgd } 1841 1.1 cgd *tocp = '\0'; 1842 1.1 cgd *mdp = md; 1843 1.1 cgd *dposp = fromcp; 1844 1.1 cgd len = nfsm_rndup(len)-len; 1845 1.1 cgd if (len > 0) { 1846 1.1 cgd if (rem >= len) 1847 1.1 cgd *dposp += len; 1848 1.24 christos else if ((error = nfs_adv(mdp, dposp, len, rem)) != 0) 1849 1.1 cgd goto out; 1850 1.1 cgd } 1851 1.43 fvdl 1852 1.1 cgd /* 1853 1.1 cgd * Extract and set starting directory. 1854 1.1 cgd */ 1855 1.24 christos error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp, 1856 1.43 fvdl nam, &rdonly, kerbflag, pubflag); 1857 1.24 christos if (error) 1858 1.1 cgd goto out; 1859 1.1 cgd if (dp->v_type != VDIR) { 1860 1.1 cgd vrele(dp); 1861 1.1 cgd error = ENOTDIR; 1862 1.1 cgd goto out; 1863 1.1 cgd } 1864 1.43 fvdl 1865 1.43 fvdl if (rdonly) 1866 1.43 fvdl cnp->cn_flags |= RDONLY; 1867 1.43 fvdl 1868 1.43 fvdl *retdirp = dp; 1869 1.43 fvdl 1870 1.43 fvdl if (pubflag) { 1871 1.43 fvdl /* 1872 1.43 fvdl * Oh joy. For WebNFS, handle those pesky '%' escapes, 1873 1.43 fvdl * and the 'native path' indicator. 1874 1.43 fvdl */ 1875 1.43 fvdl MALLOC(cp, char *, MAXPATHLEN, M_NAMEI, M_WAITOK); 1876 1.43 fvdl fromcp = cnp->cn_pnbuf; 1877 1.43 fvdl tocp = cp; 1878 1.43 fvdl if ((unsigned char)*fromcp >= WEBNFS_SPECCHAR_START) { 1879 1.43 fvdl switch ((unsigned char)*fromcp) { 1880 1.43 fvdl case WEBNFS_NATIVE_CHAR: 1881 1.43 fvdl /* 1882 1.43 fvdl * 'Native' path for us is the same 1883 1.43 fvdl * as a path according to the NFS spec, 1884 1.43 fvdl * just skip the escape char. 1885 1.43 fvdl */ 1886 1.43 fvdl fromcp++; 1887 1.43 fvdl break; 1888 1.43 fvdl /* 1889 1.43 fvdl * More may be added in the future, range 0x80-0xff 1890 1.43 fvdl */ 1891 1.43 fvdl default: 1892 1.43 fvdl error = EIO; 1893 1.43 fvdl FREE(cp, M_NAMEI); 1894 1.43 fvdl goto out; 1895 1.43 fvdl } 1896 1.43 fvdl } 1897 1.43 fvdl /* 1898 1.43 fvdl * Translate the '%' escapes, URL-style. 1899 1.43 fvdl */ 1900 1.43 fvdl while (*fromcp != '\0') { 1901 1.43 fvdl if (*fromcp == WEBNFS_ESC_CHAR) { 1902 1.43 fvdl if (fromcp[1] != '\0' && fromcp[2] != '\0') { 1903 1.43 fvdl fromcp++; 1904 1.43 fvdl *tocp++ = HEXSTRTOI(fromcp); 1905 1.43 fvdl fromcp += 2; 1906 1.43 fvdl continue; 1907 1.43 fvdl } else { 1908 1.43 fvdl error = ENOENT; 1909 1.43 fvdl FREE(cp, M_NAMEI); 1910 1.43 fvdl goto out; 1911 1.43 fvdl } 1912 1.43 fvdl } else 1913 1.43 fvdl *tocp++ = *fromcp++; 1914 1.43 fvdl } 1915 1.43 fvdl *tocp = '\0'; 1916 1.43 fvdl FREE(cnp->cn_pnbuf, M_NAMEI); 1917 1.43 fvdl cnp->cn_pnbuf = cp; 1918 1.43 fvdl } 1919 1.43 fvdl 1920 1.43 fvdl ndp->ni_pathlen = (tocp - cnp->cn_pnbuf) + 1; 1921 1.43 fvdl ndp->ni_segflg = UIO_SYSSPACE; 1922 1.43 fvdl 1923 1.43 fvdl if (pubflag) { 1924 1.43 fvdl ndp->ni_rootdir = rootvnode; 1925 1.43 fvdl ndp->ni_loopcnt = 0; 1926 1.43 fvdl if (cnp->cn_pnbuf[0] == '/') 1927 1.43 fvdl dp = rootvnode; 1928 1.43 fvdl } else { 1929 1.43 fvdl cnp->cn_flags |= NOCROSSMOUNT; 1930 1.43 fvdl } 1931 1.43 fvdl 1932 1.43 fvdl cnp->cn_proc = p; 1933 1.25 fvdl VREF(dp); 1934 1.43 fvdl 1935 1.43 fvdl for (;;) { 1936 1.43 fvdl cnp->cn_nameptr = cnp->cn_pnbuf; 1937 1.1 cgd ndp->ni_startdir = dp; 1938 1.1 cgd /* 1939 1.1 cgd * And call lookup() to do the real work 1940 1.1 cgd */ 1941 1.25 fvdl error = lookup(ndp); 1942 1.25 fvdl if (error) 1943 1.43 fvdl break; 1944 1.1 cgd /* 1945 1.1 cgd * Check for encountering a symbolic link 1946 1.1 cgd */ 1947 1.43 fvdl if ((cnp->cn_flags & ISSYMLINK) == 0) { 1948 1.43 fvdl if (cnp->cn_flags & (SAVENAME | SAVESTART)) { 1949 1.43 fvdl cnp->cn_flags |= HASBUF; 1950 1.43 fvdl return (0); 1951 1.43 fvdl } 1952 1.43 fvdl break; 1953 1.43 fvdl } else { 1954 1.12 mycroft if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 1955 1.56 fvdl VOP_UNLOCK(ndp->ni_dvp, 0); 1956 1.43 fvdl if (!pubflag) { 1957 1.43 fvdl vrele(ndp->ni_dvp); 1958 1.43 fvdl vput(ndp->ni_vp); 1959 1.43 fvdl ndp->ni_vp = NULL; 1960 1.43 fvdl error = EINVAL; 1961 1.43 fvdl break; 1962 1.43 fvdl } 1963 1.43 fvdl 1964 1.43 fvdl if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 1965 1.43 fvdl error = ELOOP; 1966 1.43 fvdl break; 1967 1.43 fvdl } 1968 1.43 fvdl if (ndp->ni_pathlen > 1) 1969 1.43 fvdl MALLOC(cp, char *, MAXPATHLEN, M_NAMEI, M_WAITOK); 1970 1.1 cgd else 1971 1.43 fvdl cp = cnp->cn_pnbuf; 1972 1.43 fvdl aiov.iov_base = cp; 1973 1.43 fvdl aiov.iov_len = MAXPATHLEN; 1974 1.43 fvdl auio.uio_iov = &aiov; 1975 1.43 fvdl auio.uio_iovcnt = 1; 1976 1.43 fvdl auio.uio_offset = 0; 1977 1.43 fvdl auio.uio_rw = UIO_READ; 1978 1.43 fvdl auio.uio_segflg = UIO_SYSSPACE; 1979 1.43 fvdl auio.uio_procp = (struct proc *)0; 1980 1.43 fvdl auio.uio_resid = MAXPATHLEN; 1981 1.43 fvdl error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 1982 1.43 fvdl if (error) { 1983 1.43 fvdl badlink: 1984 1.43 fvdl if (ndp->ni_pathlen > 1) 1985 1.43 fvdl FREE(cp, M_NAMEI); 1986 1.43 fvdl break; 1987 1.43 fvdl } 1988 1.43 fvdl linklen = MAXPATHLEN - auio.uio_resid; 1989 1.43 fvdl if (linklen == 0) { 1990 1.43 fvdl error = ENOENT; 1991 1.43 fvdl goto badlink; 1992 1.43 fvdl } 1993 1.43 fvdl if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 1994 1.43 fvdl error = ENAMETOOLONG; 1995 1.43 fvdl goto badlink; 1996 1.43 fvdl } 1997 1.43 fvdl if (ndp->ni_pathlen > 1) { 1998 1.43 fvdl bcopy(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 1999 1.43 fvdl FREE(cnp->cn_pnbuf, M_NAMEI); 2000 1.43 fvdl cnp->cn_pnbuf = cp; 2001 1.43 fvdl } else 2002 1.43 fvdl cnp->cn_pnbuf[linklen] = '\0'; 2003 1.43 fvdl ndp->ni_pathlen += linklen; 2004 1.1 cgd vput(ndp->ni_vp); 2005 1.43 fvdl dp = ndp->ni_dvp; 2006 1.43 fvdl /* 2007 1.43 fvdl * Check if root directory should replace current directory. 2008 1.43 fvdl */ 2009 1.43 fvdl if (cnp->cn_pnbuf[0] == '/') { 2010 1.43 fvdl vrele(dp); 2011 1.43 fvdl dp = ndp->ni_rootdir; 2012 1.43 fvdl VREF(dp); 2013 1.43 fvdl } 2014 1.1 cgd } 2015 1.43 fvdl } 2016 1.1 cgd out: 2017 1.12 mycroft FREE(cnp->cn_pnbuf, M_NAMEI); 2018 1.1 cgd return (error); 2019 1.1 cgd } 2020 1.1 cgd 2021 1.1 cgd /* 2022 1.1 cgd * A fiddled version of m_adj() that ensures null fill to a long 2023 1.1 cgd * boundary and only trims off the back end 2024 1.1 cgd */ 2025 1.12 mycroft void 2026 1.1 cgd nfsm_adj(mp, len, nul) 2027 1.1 cgd struct mbuf *mp; 2028 1.1 cgd register int len; 2029 1.1 cgd int nul; 2030 1.1 cgd { 2031 1.1 cgd register struct mbuf *m; 2032 1.1 cgd register int count, i; 2033 1.1 cgd register char *cp; 2034 1.1 cgd 2035 1.1 cgd /* 2036 1.1 cgd * Trim from tail. Scan the mbuf chain, 2037 1.1 cgd * calculating its length and finding the last mbuf. 2038 1.1 cgd * If the adjustment only affects this mbuf, then just 2039 1.1 cgd * adjust and return. Otherwise, rescan and truncate 2040 1.1 cgd * after the remaining size. 2041 1.1 cgd */ 2042 1.1 cgd count = 0; 2043 1.1 cgd m = mp; 2044 1.1 cgd for (;;) { 2045 1.1 cgd count += m->m_len; 2046 1.1 cgd if (m->m_next == (struct mbuf *)0) 2047 1.1 cgd break; 2048 1.1 cgd m = m->m_next; 2049 1.1 cgd } 2050 1.1 cgd if (m->m_len > len) { 2051 1.1 cgd m->m_len -= len; 2052 1.1 cgd if (nul > 0) { 2053 1.1 cgd cp = mtod(m, caddr_t)+m->m_len-nul; 2054 1.1 cgd for (i = 0; i < nul; i++) 2055 1.1 cgd *cp++ = '\0'; 2056 1.1 cgd } 2057 1.1 cgd return; 2058 1.1 cgd } 2059 1.1 cgd count -= len; 2060 1.1 cgd if (count < 0) 2061 1.1 cgd count = 0; 2062 1.1 cgd /* 2063 1.1 cgd * Correct length for chain is "count". 2064 1.1 cgd * Find the mbuf with last data, adjust its length, 2065 1.1 cgd * and toss data from remaining mbufs on chain. 2066 1.1 cgd */ 2067 1.1 cgd for (m = mp; m; m = m->m_next) { 2068 1.1 cgd if (m->m_len >= count) { 2069 1.1 cgd m->m_len = count; 2070 1.1 cgd if (nul > 0) { 2071 1.1 cgd cp = mtod(m, caddr_t)+m->m_len-nul; 2072 1.1 cgd for (i = 0; i < nul; i++) 2073 1.1 cgd *cp++ = '\0'; 2074 1.1 cgd } 2075 1.1 cgd break; 2076 1.1 cgd } 2077 1.1 cgd count -= m->m_len; 2078 1.1 cgd } 2079 1.25 fvdl for (m = m->m_next;m;m = m->m_next) 2080 1.1 cgd m->m_len = 0; 2081 1.1 cgd } 2082 1.1 cgd 2083 1.1 cgd /* 2084 1.25 fvdl * Make these functions instead of macros, so that the kernel text size 2085 1.25 fvdl * doesn't get too big... 2086 1.25 fvdl */ 2087 1.25 fvdl void 2088 1.25 fvdl nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 2089 1.25 fvdl struct nfsrv_descript *nfsd; 2090 1.25 fvdl int before_ret; 2091 1.25 fvdl register struct vattr *before_vap; 2092 1.25 fvdl int after_ret; 2093 1.25 fvdl struct vattr *after_vap; 2094 1.25 fvdl struct mbuf **mbp; 2095 1.25 fvdl char **bposp; 2096 1.25 fvdl { 2097 1.25 fvdl register struct mbuf *mb = *mbp, *mb2; 2098 1.25 fvdl register char *bpos = *bposp; 2099 1.25 fvdl register u_int32_t *tl; 2100 1.25 fvdl 2101 1.25 fvdl if (before_ret) { 2102 1.25 fvdl nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 2103 1.25 fvdl *tl = nfs_false; 2104 1.25 fvdl } else { 2105 1.25 fvdl nfsm_build(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 2106 1.25 fvdl *tl++ = nfs_true; 2107 1.25 fvdl txdr_hyper(&(before_vap->va_size), tl); 2108 1.25 fvdl tl += 2; 2109 1.25 fvdl txdr_nfsv3time(&(before_vap->va_mtime), tl); 2110 1.25 fvdl tl += 2; 2111 1.25 fvdl txdr_nfsv3time(&(before_vap->va_ctime), tl); 2112 1.25 fvdl } 2113 1.25 fvdl *bposp = bpos; 2114 1.25 fvdl *mbp = mb; 2115 1.25 fvdl nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 2116 1.25 fvdl } 2117 1.25 fvdl 2118 1.25 fvdl void 2119 1.25 fvdl nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 2120 1.25 fvdl struct nfsrv_descript *nfsd; 2121 1.25 fvdl int after_ret; 2122 1.25 fvdl struct vattr *after_vap; 2123 1.25 fvdl struct mbuf **mbp; 2124 1.25 fvdl char **bposp; 2125 1.25 fvdl { 2126 1.25 fvdl register struct mbuf *mb = *mbp, *mb2; 2127 1.25 fvdl register char *bpos = *bposp; 2128 1.25 fvdl register u_int32_t *tl; 2129 1.25 fvdl register struct nfs_fattr *fp; 2130 1.25 fvdl 2131 1.25 fvdl if (after_ret) { 2132 1.25 fvdl nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 2133 1.25 fvdl *tl = nfs_false; 2134 1.25 fvdl } else { 2135 1.25 fvdl nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_V3FATTR); 2136 1.25 fvdl *tl++ = nfs_true; 2137 1.25 fvdl fp = (struct nfs_fattr *)tl; 2138 1.25 fvdl nfsm_srvfattr(nfsd, after_vap, fp); 2139 1.25 fvdl } 2140 1.25 fvdl *mbp = mb; 2141 1.25 fvdl *bposp = bpos; 2142 1.25 fvdl } 2143 1.25 fvdl 2144 1.25 fvdl void 2145 1.25 fvdl nfsm_srvfattr(nfsd, vap, fp) 2146 1.25 fvdl register struct nfsrv_descript *nfsd; 2147 1.25 fvdl register struct vattr *vap; 2148 1.25 fvdl register struct nfs_fattr *fp; 2149 1.25 fvdl { 2150 1.25 fvdl 2151 1.25 fvdl fp->fa_nlink = txdr_unsigned(vap->va_nlink); 2152 1.25 fvdl fp->fa_uid = txdr_unsigned(vap->va_uid); 2153 1.25 fvdl fp->fa_gid = txdr_unsigned(vap->va_gid); 2154 1.25 fvdl if (nfsd->nd_flag & ND_NFSV3) { 2155 1.25 fvdl fp->fa_type = vtonfsv3_type(vap->va_type); 2156 1.25 fvdl fp->fa_mode = vtonfsv3_mode(vap->va_mode); 2157 1.25 fvdl txdr_hyper(&vap->va_size, &fp->fa3_size); 2158 1.25 fvdl txdr_hyper(&vap->va_bytes, &fp->fa3_used); 2159 1.25 fvdl fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 2160 1.25 fvdl fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 2161 1.25 fvdl fp->fa3_fsid.nfsuquad[0] = 0; 2162 1.25 fvdl fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 2163 1.25 fvdl fp->fa3_fileid.nfsuquad[0] = 0; 2164 1.25 fvdl fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid); 2165 1.25 fvdl txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 2166 1.25 fvdl txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 2167 1.25 fvdl txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 2168 1.25 fvdl } else { 2169 1.25 fvdl fp->fa_type = vtonfsv2_type(vap->va_type); 2170 1.25 fvdl fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 2171 1.25 fvdl fp->fa2_size = txdr_unsigned(vap->va_size); 2172 1.25 fvdl fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 2173 1.25 fvdl if (vap->va_type == VFIFO) 2174 1.25 fvdl fp->fa2_rdev = 0xffffffff; 2175 1.25 fvdl else 2176 1.25 fvdl fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 2177 1.25 fvdl fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 2178 1.25 fvdl fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 2179 1.25 fvdl fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 2180 1.25 fvdl txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 2181 1.25 fvdl txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 2182 1.25 fvdl txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 2183 1.25 fvdl } 2184 1.25 fvdl } 2185 1.25 fvdl 2186 1.25 fvdl /* 2187 1.1 cgd * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 2188 1.1 cgd * - look up fsid in mount list (if not found ret error) 2189 1.12 mycroft * - get vp and export rights by calling VFS_FHTOVP() 2190 1.12 mycroft * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2191 1.1 cgd * - if not lockflag unlock it with VOP_UNLOCK() 2192 1.1 cgd */ 2193 1.24 christos int 2194 1.43 fvdl nfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag, pubflag) 2195 1.1 cgd fhandle_t *fhp; 2196 1.1 cgd int lockflag; 2197 1.1 cgd struct vnode **vpp; 2198 1.1 cgd struct ucred *cred; 2199 1.12 mycroft struct nfssvc_sock *slp; 2200 1.12 mycroft struct mbuf *nam; 2201 1.12 mycroft int *rdonlyp; 2202 1.25 fvdl int kerbflag; 2203 1.1 cgd { 2204 1.1 cgd register struct mount *mp; 2205 1.12 mycroft register int i; 2206 1.12 mycroft struct ucred *credanon; 2207 1.12 mycroft int error, exflags; 2208 1.40 fvdl struct sockaddr_in *saddr; 2209 1.1 cgd 2210 1.12 mycroft *vpp = (struct vnode *)0; 2211 1.43 fvdl 2212 1.43 fvdl if (nfs_ispublicfh(fhp)) { 2213 1.43 fvdl if (!pubflag || !nfs_pub.np_valid) 2214 1.43 fvdl return (ESTALE); 2215 1.43 fvdl fhp = &nfs_pub.np_handle; 2216 1.43 fvdl } 2217 1.43 fvdl 2218 1.25 fvdl mp = vfs_getvfs(&fhp->fh_fsid); 2219 1.25 fvdl if (!mp) 2220 1.1 cgd return (ESTALE); 2221 1.24 christos error = VFS_FHTOVP(mp, &fhp->fh_fid, nam, vpp, &exflags, &credanon); 2222 1.24 christos if (error) 2223 1.12 mycroft return (error); 2224 1.40 fvdl 2225 1.43 fvdl if (!(exflags & (MNT_EXNORESPORT|MNT_EXPUBLIC))) { 2226 1.40 fvdl saddr = mtod(nam, struct sockaddr_in *); 2227 1.40 fvdl if (saddr->sin_family == AF_INET && 2228 1.40 fvdl ntohs(saddr->sin_port) >= IPPORT_RESERVED) { 2229 1.40 fvdl vput(*vpp); 2230 1.40 fvdl return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2231 1.40 fvdl } 2232 1.40 fvdl } 2233 1.12 mycroft /* 2234 1.12 mycroft * Check/setup credentials. 2235 1.12 mycroft */ 2236 1.12 mycroft if (exflags & MNT_EXKERB) { 2237 1.25 fvdl if (!kerbflag) { 2238 1.12 mycroft vput(*vpp); 2239 1.25 fvdl return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2240 1.12 mycroft } 2241 1.25 fvdl } else if (kerbflag) { 2242 1.25 fvdl vput(*vpp); 2243 1.25 fvdl return (NFSERR_AUTHERR | AUTH_TOOWEAK); 2244 1.12 mycroft } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) { 2245 1.12 mycroft cred->cr_uid = credanon->cr_uid; 2246 1.19 jtc cred->cr_gid = credanon->cr_gid; 2247 1.12 mycroft for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++) 2248 1.12 mycroft cred->cr_groups[i] = credanon->cr_groups[i]; 2249 1.15 mycroft cred->cr_ngroups = i; 2250 1.12 mycroft } 2251 1.12 mycroft if (exflags & MNT_EXRDONLY) 2252 1.12 mycroft *rdonlyp = 1; 2253 1.12 mycroft else 2254 1.12 mycroft *rdonlyp = 0; 2255 1.1 cgd if (!lockflag) 2256 1.56 fvdl VOP_UNLOCK(*vpp, 0); 2257 1.1 cgd return (0); 2258 1.43 fvdl } 2259 1.43 fvdl 2260 1.43 fvdl /* 2261 1.43 fvdl * WebNFS: check if a filehandle is a public filehandle. For v3, this 2262 1.43 fvdl * means a length of 0, for v2 it means all zeroes. nfsm_srvmtofh has 2263 1.43 fvdl * transformed this to all zeroes in both cases, so check for it. 2264 1.43 fvdl */ 2265 1.43 fvdl int 2266 1.43 fvdl nfs_ispublicfh(fhp) 2267 1.43 fvdl fhandle_t *fhp; 2268 1.43 fvdl { 2269 1.43 fvdl char *cp = (char *)fhp; 2270 1.43 fvdl int i; 2271 1.43 fvdl 2272 1.43 fvdl for (i = 0; i < NFSX_V3FH; i++) 2273 1.43 fvdl if (*cp++ != 0) 2274 1.43 fvdl return (FALSE); 2275 1.43 fvdl return (TRUE); 2276 1.1 cgd } 2277 1.1 cgd 2278 1.1 cgd /* 2279 1.12 mycroft * This function compares two net addresses by family and returns TRUE 2280 1.12 mycroft * if they are the same host. 2281 1.12 mycroft * If there is any doubt, return FALSE. 2282 1.12 mycroft * The AF_INET family is handled as a special case so that address mbufs 2283 1.12 mycroft * don't need to be saved to store "struct in_addr", which is only 4 bytes. 2284 1.1 cgd */ 2285 1.24 christos int 2286 1.12 mycroft netaddr_match(family, haddr, nam) 2287 1.12 mycroft int family; 2288 1.12 mycroft union nethostaddr *haddr; 2289 1.12 mycroft struct mbuf *nam; 2290 1.1 cgd { 2291 1.12 mycroft register struct sockaddr_in *inetaddr; 2292 1.1 cgd 2293 1.12 mycroft switch (family) { 2294 1.12 mycroft case AF_INET: 2295 1.12 mycroft inetaddr = mtod(nam, struct sockaddr_in *); 2296 1.12 mycroft if (inetaddr->sin_family == AF_INET && 2297 1.12 mycroft inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 2298 1.12 mycroft return (1); 2299 1.12 mycroft break; 2300 1.12 mycroft #ifdef ISO 2301 1.12 mycroft case AF_ISO: 2302 1.12 mycroft { 2303 1.12 mycroft register struct sockaddr_iso *isoaddr1, *isoaddr2; 2304 1.12 mycroft 2305 1.12 mycroft isoaddr1 = mtod(nam, struct sockaddr_iso *); 2306 1.12 mycroft isoaddr2 = mtod(haddr->had_nam, struct sockaddr_iso *); 2307 1.12 mycroft if (isoaddr1->siso_family == AF_ISO && 2308 1.12 mycroft isoaddr1->siso_nlen > 0 && 2309 1.12 mycroft isoaddr1->siso_nlen == isoaddr2->siso_nlen && 2310 1.12 mycroft SAME_ISOADDR(isoaddr1, isoaddr2)) 2311 1.12 mycroft return (1); 2312 1.12 mycroft break; 2313 1.12 mycroft } 2314 1.12 mycroft #endif /* ISO */ 2315 1.12 mycroft default: 2316 1.12 mycroft break; 2317 1.12 mycroft }; 2318 1.12 mycroft return (0); 2319 1.25 fvdl } 2320 1.25 fvdl 2321 1.25 fvdl 2322 1.25 fvdl /* 2323 1.25 fvdl * The write verifier has changed (probably due to a server reboot), so all 2324 1.25 fvdl * B_NEEDCOMMIT blocks will have to be written again. Since they are on the 2325 1.25 fvdl * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT 2326 1.25 fvdl * flag. Once done the new write verifier can be set for the mount point. 2327 1.25 fvdl */ 2328 1.25 fvdl void 2329 1.25 fvdl nfs_clearcommit(mp) 2330 1.25 fvdl struct mount *mp; 2331 1.25 fvdl { 2332 1.25 fvdl register struct vnode *vp, *nvp; 2333 1.25 fvdl register struct buf *bp, *nbp; 2334 1.25 fvdl int s; 2335 1.25 fvdl 2336 1.25 fvdl s = splbio(); 2337 1.25 fvdl loop: 2338 1.25 fvdl for (vp = mp->mnt_vnodelist.lh_first; vp; vp = nvp) { 2339 1.25 fvdl if (vp->v_mount != mp) /* Paranoia */ 2340 1.25 fvdl goto loop; 2341 1.25 fvdl nvp = vp->v_mntvnodes.le_next; 2342 1.25 fvdl for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { 2343 1.25 fvdl nbp = bp->b_vnbufs.le_next; 2344 1.25 fvdl if ((bp->b_flags & (B_BUSY | B_DELWRI | B_NEEDCOMMIT)) 2345 1.25 fvdl == (B_DELWRI | B_NEEDCOMMIT)) 2346 1.25 fvdl bp->b_flags &= ~B_NEEDCOMMIT; 2347 1.25 fvdl } 2348 1.25 fvdl } 2349 1.25 fvdl splx(s); 2350 1.25 fvdl } 2351 1.25 fvdl 2352 1.25 fvdl /* 2353 1.25 fvdl * Map errnos to NFS error numbers. For Version 3 also filter out error 2354 1.25 fvdl * numbers not specified for the associated procedure. 2355 1.25 fvdl */ 2356 1.25 fvdl int 2357 1.25 fvdl nfsrv_errmap(nd, err) 2358 1.25 fvdl struct nfsrv_descript *nd; 2359 1.25 fvdl register int err; 2360 1.25 fvdl { 2361 1.25 fvdl register short *defaulterrp, *errp; 2362 1.25 fvdl 2363 1.25 fvdl if (nd->nd_flag & ND_NFSV3) { 2364 1.25 fvdl if (nd->nd_procnum <= NFSPROC_COMMIT) { 2365 1.25 fvdl errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 2366 1.25 fvdl while (*++errp) { 2367 1.25 fvdl if (*errp == err) 2368 1.25 fvdl return (err); 2369 1.25 fvdl else if (*errp > err) 2370 1.25 fvdl break; 2371 1.25 fvdl } 2372 1.25 fvdl return ((int)*defaulterrp); 2373 1.25 fvdl } else 2374 1.25 fvdl return (err & 0xffff); 2375 1.25 fvdl } 2376 1.25 fvdl if (err <= ELAST) 2377 1.25 fvdl return ((int)nfsrv_v2errmap[err - 1]); 2378 1.25 fvdl return (NFSERR_IO); 2379 1.25 fvdl } 2380 1.25 fvdl 2381 1.25 fvdl /* 2382 1.25 fvdl * Sort the group list in increasing numerical order. 2383 1.25 fvdl * (Insertion sort by Chris Torek, who was grossed out by the bubble sort 2384 1.25 fvdl * that used to be here.) 2385 1.25 fvdl */ 2386 1.25 fvdl void 2387 1.25 fvdl nfsrvw_sort(list, num) 2388 1.25 fvdl register gid_t *list; 2389 1.25 fvdl register int num; 2390 1.25 fvdl { 2391 1.25 fvdl register int i, j; 2392 1.25 fvdl gid_t v; 2393 1.25 fvdl 2394 1.25 fvdl /* Insertion sort. */ 2395 1.25 fvdl for (i = 1; i < num; i++) { 2396 1.25 fvdl v = list[i]; 2397 1.25 fvdl /* find correct slot for value v, moving others up */ 2398 1.25 fvdl for (j = i; --j >= 0 && v < list[j];) 2399 1.25 fvdl list[j + 1] = list[j]; 2400 1.25 fvdl list[j + 1] = v; 2401 1.25 fvdl } 2402 1.25 fvdl } 2403 1.25 fvdl 2404 1.25 fvdl /* 2405 1.25 fvdl * copy credentials making sure that the result can be compared with bcmp(). 2406 1.25 fvdl */ 2407 1.25 fvdl void 2408 1.25 fvdl nfsrv_setcred(incred, outcred) 2409 1.25 fvdl register struct ucred *incred, *outcred; 2410 1.25 fvdl { 2411 1.25 fvdl register int i; 2412 1.25 fvdl 2413 1.25 fvdl bzero((caddr_t)outcred, sizeof (struct ucred)); 2414 1.25 fvdl outcred->cr_ref = 1; 2415 1.25 fvdl outcred->cr_uid = incred->cr_uid; 2416 1.25 fvdl outcred->cr_gid = incred->cr_gid; 2417 1.25 fvdl outcred->cr_ngroups = incred->cr_ngroups; 2418 1.25 fvdl for (i = 0; i < incred->cr_ngroups; i++) 2419 1.25 fvdl outcred->cr_groups[i] = incred->cr_groups[i]; 2420 1.25 fvdl nfsrvw_sort(outcred->cr_groups, outcred->cr_ngroups); 2421 1.1 cgd } 2422
Indexes created Mon Sep 22 13:09:51 GMT 2025