nfs_subs.c revision 1.45
1 /* $NetBSD: nfs_subs.c,v 1.45 1997/07/14 20:46:20 fvdl Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Macklem at The University of Guelph. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)nfs_subs.c 8.8 (Berkeley) 5/22/95 39 */ 40 41 42 /* 43 * These functions support the macros and help fiddle mbuf chains for 44 * the nfs op functions. They do things like create the rpc header and 45 * copy data between mbuf chains and uio lists. 46 */ 47 #include <sys/param.h> 48 #include <sys/proc.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/mount.h> 52 #include <sys/vnode.h> 53 #include <sys/namei.h> 54 #include <sys/mbuf.h> 55 #include <sys/socket.h> 56 #include <sys/stat.h> 57 #include <sys/malloc.h> 58 #include <sys/time.h> 59 #include <sys/dirent.h> 60 61 #include <vm/vm.h> 62 63 #include <nfs/rpcv2.h> 64 #include <nfs/nfsproto.h> 65 #include <nfs/nfsnode.h> 66 #include <nfs/nfs.h> 67 #include <nfs/xdr_subs.h> 68 #include <nfs/nfsm_subs.h> 69 #include <nfs/nfsmount.h> 70 #include <nfs/nqnfs.h> 71 #include <nfs/nfsrtt.h> 72 #include <nfs/nfs_var.h> 73 74 #include <miscfs/specfs/specdev.h> 75 76 #include <vm/vm.h> 77 78 #include <netinet/in.h> 79 #ifdef ISO 80 #include <netiso/iso.h> 81 #endif 82 83 /* 84 * Data items converted to xdr at startup, since they are constant 85 * This is kinda hokey, but may save a little time doing byte swaps 86 */ 87 u_int32_t nfs_xdrneg1; 88 u_int32_t rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 89 rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 90 rpc_auth_kerb; 91 u_int32_t nfs_prog, nqnfs_prog, nfs_true, nfs_false; 92 93 /* And other global data */ 94 static u_int32_t nfs_xid = 0; 95 nfstype nfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON, 96 NFCHR, NFNON }; 97 nfstype nfsv3_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK, 98 NFFIFO, NFNON }; 99 enum vtype nv2tov_type[8] = { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON }; 100 enum vtype nv3tov_type[8]={ VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO }; 101 int nfs_ticks; 102 extern struct nfs_public nfs_pub; 103 104 /* NFS client/server stats. */ 105 struct nfsstats nfsstats; 106 107 /* 108 * Mapping of old NFS Version 2 RPC numbers to generic numbers. 109 */ 110 int nfsv3_procid[NFS_NPROCS] = { 111 NFSPROC_NULL, 112 NFSPROC_GETATTR, 113 NFSPROC_SETATTR, 114 NFSPROC_NOOP, 115 NFSPROC_LOOKUP, 116 NFSPROC_READLINK, 117 NFSPROC_READ, 118 NFSPROC_NOOP, 119 NFSPROC_WRITE, 120 NFSPROC_CREATE, 121 NFSPROC_REMOVE, 122 NFSPROC_RENAME, 123 NFSPROC_LINK, 124 NFSPROC_SYMLINK, 125 NFSPROC_MKDIR, 126 NFSPROC_RMDIR, 127 NFSPROC_READDIR, 128 NFSPROC_FSSTAT, 129 NFSPROC_NOOP, 130 NFSPROC_NOOP, 131 NFSPROC_NOOP, 132 NFSPROC_NOOP, 133 NFSPROC_NOOP, 134 NFSPROC_NOOP, 135 NFSPROC_NOOP, 136 NFSPROC_NOOP 137 }; 138 139 /* 140 * and the reverse mapping from generic to Version 2 procedure numbers 141 */ 142 int nfsv2_procid[NFS_NPROCS] = { 143 NFSV2PROC_NULL, 144 NFSV2PROC_GETATTR, 145 NFSV2PROC_SETATTR, 146 NFSV2PROC_LOOKUP, 147 NFSV2PROC_NOOP, 148 NFSV2PROC_READLINK, 149 NFSV2PROC_READ, 150 NFSV2PROC_WRITE, 151 NFSV2PROC_CREATE, 152 NFSV2PROC_MKDIR, 153 NFSV2PROC_SYMLINK, 154 NFSV2PROC_CREATE, 155 NFSV2PROC_REMOVE, 156 NFSV2PROC_RMDIR, 157 NFSV2PROC_RENAME, 158 NFSV2PROC_LINK, 159 NFSV2PROC_READDIR, 160 NFSV2PROC_NOOP, 161 NFSV2PROC_STATFS, 162 NFSV2PROC_NOOP, 163 NFSV2PROC_NOOP, 164 NFSV2PROC_NOOP, 165 NFSV2PROC_NOOP, 166 NFSV2PROC_NOOP, 167 NFSV2PROC_NOOP, 168 NFSV2PROC_NOOP, 169 }; 170 171 /* 172 * Maps errno values to nfs error numbers. 173 * Use NFSERR_IO as the catch all for ones not specifically defined in 174 * RFC 1094. 175 */ 176 static u_char nfsrv_v2errmap[ELAST] = { 177 NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 178 NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 179 NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 180 NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 181 NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 182 NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 183 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 184 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 185 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 186 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 187 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 188 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 189 NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 190 NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 191 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 192 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 193 NFSERR_IO, 194 }; 195 196 /* 197 * Maps errno values to nfs error numbers. 198 * Although it is not obvious whether or not NFS clients really care if 199 * a returned error value is in the specified list for the procedure, the 200 * safest thing to do is filter them appropriately. For Version 2, the 201 * X/Open XNFS document is the only specification that defines error values 202 * for each RPC (The RFC simply lists all possible error values for all RPCs), 203 * so I have decided to not do this for Version 2. 204 * The first entry is the default error return and the rest are the valid 205 * errors for that RPC in increasing numeric order. 206 */ 207 static short nfsv3err_null[] = { 208 0, 209 0, 210 }; 211 212 static short nfsv3err_getattr[] = { 213 NFSERR_IO, 214 NFSERR_IO, 215 NFSERR_STALE, 216 NFSERR_BADHANDLE, 217 NFSERR_SERVERFAULT, 218 0, 219 }; 220 221 static short nfsv3err_setattr[] = { 222 NFSERR_IO, 223 NFSERR_PERM, 224 NFSERR_IO, 225 NFSERR_ACCES, 226 NFSERR_INVAL, 227 NFSERR_NOSPC, 228 NFSERR_ROFS, 229 NFSERR_DQUOT, 230 NFSERR_STALE, 231 NFSERR_BADHANDLE, 232 NFSERR_NOT_SYNC, 233 NFSERR_SERVERFAULT, 234 0, 235 }; 236 237 static short nfsv3err_lookup[] = { 238 NFSERR_IO, 239 NFSERR_NOENT, 240 NFSERR_IO, 241 NFSERR_ACCES, 242 NFSERR_NOTDIR, 243 NFSERR_NAMETOL, 244 NFSERR_STALE, 245 NFSERR_BADHANDLE, 246 NFSERR_SERVERFAULT, 247 0, 248 }; 249 250 static short nfsv3err_access[] = { 251 NFSERR_IO, 252 NFSERR_IO, 253 NFSERR_STALE, 254 NFSERR_BADHANDLE, 255 NFSERR_SERVERFAULT, 256 0, 257 }; 258 259 static short nfsv3err_readlink[] = { 260 NFSERR_IO, 261 NFSERR_IO, 262 NFSERR_ACCES, 263 NFSERR_INVAL, 264 NFSERR_STALE, 265 NFSERR_BADHANDLE, 266 NFSERR_NOTSUPP, 267 NFSERR_SERVERFAULT, 268 0, 269 }; 270 271 static short nfsv3err_read[] = { 272 NFSERR_IO, 273 NFSERR_IO, 274 NFSERR_NXIO, 275 NFSERR_ACCES, 276 NFSERR_INVAL, 277 NFSERR_STALE, 278 NFSERR_BADHANDLE, 279 NFSERR_SERVERFAULT, 280 0, 281 }; 282 283 static short nfsv3err_write[] = { 284 NFSERR_IO, 285 NFSERR_IO, 286 NFSERR_ACCES, 287 NFSERR_INVAL, 288 NFSERR_FBIG, 289 NFSERR_NOSPC, 290 NFSERR_ROFS, 291 NFSERR_DQUOT, 292 NFSERR_STALE, 293 NFSERR_BADHANDLE, 294 NFSERR_SERVERFAULT, 295 0, 296 }; 297 298 static short nfsv3err_create[] = { 299 NFSERR_IO, 300 NFSERR_IO, 301 NFSERR_ACCES, 302 NFSERR_EXIST, 303 NFSERR_NOTDIR, 304 NFSERR_NOSPC, 305 NFSERR_ROFS, 306 NFSERR_NAMETOL, 307 NFSERR_DQUOT, 308 NFSERR_STALE, 309 NFSERR_BADHANDLE, 310 NFSERR_NOTSUPP, 311 NFSERR_SERVERFAULT, 312 0, 313 }; 314 315 static short nfsv3err_mkdir[] = { 316 NFSERR_IO, 317 NFSERR_IO, 318 NFSERR_ACCES, 319 NFSERR_EXIST, 320 NFSERR_NOTDIR, 321 NFSERR_NOSPC, 322 NFSERR_ROFS, 323 NFSERR_NAMETOL, 324 NFSERR_DQUOT, 325 NFSERR_STALE, 326 NFSERR_BADHANDLE, 327 NFSERR_NOTSUPP, 328 NFSERR_SERVERFAULT, 329 0, 330 }; 331 332 static short nfsv3err_symlink[] = { 333 NFSERR_IO, 334 NFSERR_IO, 335 NFSERR_ACCES, 336 NFSERR_EXIST, 337 NFSERR_NOTDIR, 338 NFSERR_NOSPC, 339 NFSERR_ROFS, 340 NFSERR_NAMETOL, 341 NFSERR_DQUOT, 342 NFSERR_STALE, 343 NFSERR_BADHANDLE, 344 NFSERR_NOTSUPP, 345 NFSERR_SERVERFAULT, 346 0, 347 }; 348 349 static short nfsv3err_mknod[] = { 350 NFSERR_IO, 351 NFSERR_IO, 352 NFSERR_ACCES, 353 NFSERR_EXIST, 354 NFSERR_NOTDIR, 355 NFSERR_NOSPC, 356 NFSERR_ROFS, 357 NFSERR_NAMETOL, 358 NFSERR_DQUOT, 359 NFSERR_STALE, 360 NFSERR_BADHANDLE, 361 NFSERR_NOTSUPP, 362 NFSERR_SERVERFAULT, 363 NFSERR_BADTYPE, 364 0, 365 }; 366 367 static short nfsv3err_remove[] = { 368 NFSERR_IO, 369 NFSERR_NOENT, 370 NFSERR_IO, 371 NFSERR_ACCES, 372 NFSERR_NOTDIR, 373 NFSERR_ROFS, 374 NFSERR_NAMETOL, 375 NFSERR_STALE, 376 NFSERR_BADHANDLE, 377 NFSERR_SERVERFAULT, 378 0, 379 }; 380 381 static short nfsv3err_rmdir[] = { 382 NFSERR_IO, 383 NFSERR_NOENT, 384 NFSERR_IO, 385 NFSERR_ACCES, 386 NFSERR_EXIST, 387 NFSERR_NOTDIR, 388 NFSERR_INVAL, 389 NFSERR_ROFS, 390 NFSERR_NAMETOL, 391 NFSERR_NOTEMPTY, 392 NFSERR_STALE, 393 NFSERR_BADHANDLE, 394 NFSERR_NOTSUPP, 395 NFSERR_SERVERFAULT, 396 0, 397 }; 398 399 static short nfsv3err_rename[] = { 400 NFSERR_IO, 401 NFSERR_NOENT, 402 NFSERR_IO, 403 NFSERR_ACCES, 404 NFSERR_EXIST, 405 NFSERR_XDEV, 406 NFSERR_NOTDIR, 407 NFSERR_ISDIR, 408 NFSERR_INVAL, 409 NFSERR_NOSPC, 410 NFSERR_ROFS, 411 NFSERR_MLINK, 412 NFSERR_NAMETOL, 413 NFSERR_NOTEMPTY, 414 NFSERR_DQUOT, 415 NFSERR_STALE, 416 NFSERR_BADHANDLE, 417 NFSERR_NOTSUPP, 418 NFSERR_SERVERFAULT, 419 0, 420 }; 421 422 static short nfsv3err_link[] = { 423 NFSERR_IO, 424 NFSERR_IO, 425 NFSERR_ACCES, 426 NFSERR_EXIST, 427 NFSERR_XDEV, 428 NFSERR_NOTDIR, 429 NFSERR_INVAL, 430 NFSERR_NOSPC, 431 NFSERR_ROFS, 432 NFSERR_MLINK, 433 NFSERR_NAMETOL, 434 NFSERR_DQUOT, 435 NFSERR_STALE, 436 NFSERR_BADHANDLE, 437 NFSERR_NOTSUPP, 438 NFSERR_SERVERFAULT, 439 0, 440 }; 441 442 static short nfsv3err_readdir[] = { 443 NFSERR_IO, 444 NFSERR_IO, 445 NFSERR_ACCES, 446 NFSERR_NOTDIR, 447 NFSERR_STALE, 448 NFSERR_BADHANDLE, 449 NFSERR_BAD_COOKIE, 450 NFSERR_TOOSMALL, 451 NFSERR_SERVERFAULT, 452 0, 453 }; 454 455 static short nfsv3err_readdirplus[] = { 456 NFSERR_IO, 457 NFSERR_IO, 458 NFSERR_ACCES, 459 NFSERR_NOTDIR, 460 NFSERR_STALE, 461 NFSERR_BADHANDLE, 462 NFSERR_BAD_COOKIE, 463 NFSERR_NOTSUPP, 464 NFSERR_TOOSMALL, 465 NFSERR_SERVERFAULT, 466 0, 467 }; 468 469 static short nfsv3err_fsstat[] = { 470 NFSERR_IO, 471 NFSERR_IO, 472 NFSERR_STALE, 473 NFSERR_BADHANDLE, 474 NFSERR_SERVERFAULT, 475 0, 476 }; 477 478 static short nfsv3err_fsinfo[] = { 479 NFSERR_STALE, 480 NFSERR_STALE, 481 NFSERR_BADHANDLE, 482 NFSERR_SERVERFAULT, 483 0, 484 }; 485 486 static short nfsv3err_pathconf[] = { 487 NFSERR_STALE, 488 NFSERR_STALE, 489 NFSERR_BADHANDLE, 490 NFSERR_SERVERFAULT, 491 0, 492 }; 493 494 static short nfsv3err_commit[] = { 495 NFSERR_IO, 496 NFSERR_IO, 497 NFSERR_STALE, 498 NFSERR_BADHANDLE, 499 NFSERR_SERVERFAULT, 500 0, 501 }; 502 503 static short *nfsrv_v3errmap[] = { 504 nfsv3err_null, 505 nfsv3err_getattr, 506 nfsv3err_setattr, 507 nfsv3err_lookup, 508 nfsv3err_access, 509 nfsv3err_readlink, 510 nfsv3err_read, 511 nfsv3err_write, 512 nfsv3err_create, 513 nfsv3err_mkdir, 514 nfsv3err_symlink, 515 nfsv3err_mknod, 516 nfsv3err_remove, 517 nfsv3err_rmdir, 518 nfsv3err_rename, 519 nfsv3err_link, 520 nfsv3err_readdir, 521 nfsv3err_readdirplus, 522 nfsv3err_fsstat, 523 nfsv3err_fsinfo, 524 nfsv3err_pathconf, 525 nfsv3err_commit, 526 }; 527 528 extern struct nfsrtt nfsrtt; 529 extern time_t nqnfsstarttime; 530 extern int nqsrv_clockskew; 531 extern int nqsrv_writeslack; 532 extern int nqsrv_maxlease; 533 extern int nqnfs_piggy[NFS_NPROCS]; 534 extern nfstype nfsv2_type[9]; 535 extern nfstype nfsv3_type[9]; 536 extern struct nfsnodehashhead *nfsnodehashtbl; 537 extern u_long nfsnodehash; 538 539 LIST_HEAD(nfsnodehashhead, nfsnode); 540 541 int nfs_webnamei __P((struct nameidata *, struct vnode *, struct proc *)); 542 543 /* 544 * Create the header for an rpc request packet 545 * The hsiz is the size of the rest of the nfs request header. 546 * (just used to decide if a cluster is a good idea) 547 */ 548 struct mbuf * 549 nfsm_reqh(vp, procid, hsiz, bposp) 550 struct vnode *vp; 551 u_long procid; 552 int hsiz; 553 caddr_t *bposp; 554 { 555 register struct mbuf *mb; 556 register u_int32_t *tl; 557 register caddr_t bpos; 558 struct mbuf *mb2; 559 struct nfsmount *nmp; 560 int nqflag; 561 562 MGET(mb, M_WAIT, MT_DATA); 563 if (hsiz >= MINCLSIZE) 564 MCLGET(mb, M_WAIT); 565 mb->m_len = 0; 566 bpos = mtod(mb, caddr_t); 567 568 /* 569 * For NQNFS, add lease request. 570 */ 571 if (vp) { 572 nmp = VFSTONFS(vp->v_mount); 573 if (nmp->nm_flag & NFSMNT_NQNFS) { 574 nqflag = NQNFS_NEEDLEASE(vp, procid); 575 if (nqflag) { 576 nfsm_build(tl, u_int32_t *, 2*NFSX_UNSIGNED); 577 *tl++ = txdr_unsigned(nqflag); 578 *tl = txdr_unsigned(nmp->nm_leaseterm); 579 } else { 580 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 581 *tl = 0; 582 } 583 } 584 } 585 /* Finally, return values */ 586 *bposp = bpos; 587 return (mb); 588 } 589 590 /* 591 * Build the RPC header and fill in the authorization info. 592 * The authorization string argument is only used when the credentials 593 * come from outside of the kernel. 594 * Returns the head of the mbuf list. 595 */ 596 struct mbuf * 597 nfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 598 verf_str, mrest, mrest_len, mbp, xidp) 599 register struct ucred *cr; 600 int nmflag; 601 int procid; 602 int auth_type; 603 int auth_len; 604 char *auth_str; 605 int verf_len; 606 char *verf_str; 607 struct mbuf *mrest; 608 int mrest_len; 609 struct mbuf **mbp; 610 u_int32_t *xidp; 611 { 612 register struct mbuf *mb; 613 register u_int32_t *tl; 614 register caddr_t bpos; 615 register int i; 616 struct mbuf *mreq, *mb2; 617 int siz, grpsiz, authsiz; 618 struct timeval tv; 619 static u_int32_t base; 620 621 authsiz = nfsm_rndup(auth_len); 622 MGETHDR(mb, M_WAIT, MT_DATA); 623 if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 624 MCLGET(mb, M_WAIT); 625 } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 626 MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 627 } else { 628 MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 629 } 630 mb->m_len = 0; 631 mreq = mb; 632 bpos = mtod(mb, caddr_t); 633 634 /* 635 * First the RPC header. 636 */ 637 nfsm_build(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 638 639 /* 640 * derive initial xid from system time 641 * XXX time is invalid if root not yet mounted 642 */ 643 if (!base && (rootvp)) { 644 microtime(&tv); 645 base = tv.tv_sec << 12; 646 nfs_xid = base; 647 } 648 /* 649 * Skip zero xid if it should ever happen. 650 */ 651 if (++nfs_xid == 0) 652 nfs_xid++; 653 654 *tl++ = *xidp = txdr_unsigned(nfs_xid); 655 *tl++ = rpc_call; 656 *tl++ = rpc_vers; 657 if (nmflag & NFSMNT_NQNFS) { 658 *tl++ = txdr_unsigned(NQNFS_PROG); 659 *tl++ = txdr_unsigned(NQNFS_VER3); 660 } else { 661 *tl++ = txdr_unsigned(NFS_PROG); 662 if (nmflag & NFSMNT_NFSV3) 663 *tl++ = txdr_unsigned(NFS_VER3); 664 else 665 *tl++ = txdr_unsigned(NFS_VER2); 666 } 667 if (nmflag & NFSMNT_NFSV3) 668 *tl++ = txdr_unsigned(procid); 669 else 670 *tl++ = txdr_unsigned(nfsv2_procid[procid]); 671 672 /* 673 * And then the authorization cred. 674 */ 675 *tl++ = txdr_unsigned(auth_type); 676 *tl = txdr_unsigned(authsiz); 677 switch (auth_type) { 678 case RPCAUTH_UNIX: 679 nfsm_build(tl, u_int32_t *, auth_len); 680 *tl++ = 0; /* stamp ?? */ 681 *tl++ = 0; /* NULL hostname */ 682 *tl++ = txdr_unsigned(cr->cr_uid); 683 *tl++ = txdr_unsigned(cr->cr_gid); 684 grpsiz = (auth_len >> 2) - 5; 685 *tl++ = txdr_unsigned(grpsiz); 686 for (i = 0; i < grpsiz; i++) 687 *tl++ = txdr_unsigned(cr->cr_groups[i]); 688 break; 689 case RPCAUTH_KERB4: 690 siz = auth_len; 691 while (siz > 0) { 692 if (M_TRAILINGSPACE(mb) == 0) { 693 MGET(mb2, M_WAIT, MT_DATA); 694 if (siz >= MINCLSIZE) 695 MCLGET(mb2, M_WAIT); 696 mb->m_next = mb2; 697 mb = mb2; 698 mb->m_len = 0; 699 bpos = mtod(mb, caddr_t); 700 } 701 i = min(siz, M_TRAILINGSPACE(mb)); 702 bcopy(auth_str, bpos, i); 703 mb->m_len += i; 704 auth_str += i; 705 bpos += i; 706 siz -= i; 707 } 708 if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 709 for (i = 0; i < siz; i++) 710 *bpos++ = '\0'; 711 mb->m_len += siz; 712 } 713 break; 714 }; 715 716 /* 717 * And the verifier... 718 */ 719 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 720 if (verf_str) { 721 *tl++ = txdr_unsigned(RPCAUTH_KERB4); 722 *tl = txdr_unsigned(verf_len); 723 siz = verf_len; 724 while (siz > 0) { 725 if (M_TRAILINGSPACE(mb) == 0) { 726 MGET(mb2, M_WAIT, MT_DATA); 727 if (siz >= MINCLSIZE) 728 MCLGET(mb2, M_WAIT); 729 mb->m_next = mb2; 730 mb = mb2; 731 mb->m_len = 0; 732 bpos = mtod(mb, caddr_t); 733 } 734 i = min(siz, M_TRAILINGSPACE(mb)); 735 bcopy(verf_str, bpos, i); 736 mb->m_len += i; 737 verf_str += i; 738 bpos += i; 739 siz -= i; 740 } 741 if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 742 for (i = 0; i < siz; i++) 743 *bpos++ = '\0'; 744 mb->m_len += siz; 745 } 746 } else { 747 *tl++ = txdr_unsigned(RPCAUTH_NULL); 748 *tl = 0; 749 } 750 mb->m_next = mrest; 751 mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 752 mreq->m_pkthdr.rcvif = (struct ifnet *)0; 753 *mbp = mb; 754 return (mreq); 755 } 756 757 /* 758 * copies mbuf chain to the uio scatter/gather list 759 */ 760 int 761 nfsm_mbuftouio(mrep, uiop, siz, dpos) 762 struct mbuf **mrep; 763 register struct uio *uiop; 764 int siz; 765 caddr_t *dpos; 766 { 767 register char *mbufcp, *uiocp; 768 register int xfer, left, len; 769 register struct mbuf *mp; 770 long uiosiz, rem; 771 int error = 0; 772 773 mp = *mrep; 774 mbufcp = *dpos; 775 len = mtod(mp, caddr_t)+mp->m_len-mbufcp; 776 rem = nfsm_rndup(siz)-siz; 777 while (siz > 0) { 778 if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 779 return (EFBIG); 780 left = uiop->uio_iov->iov_len; 781 uiocp = uiop->uio_iov->iov_base; 782 if (left > siz) 783 left = siz; 784 uiosiz = left; 785 while (left > 0) { 786 while (len == 0) { 787 mp = mp->m_next; 788 if (mp == NULL) 789 return (EBADRPC); 790 mbufcp = mtod(mp, caddr_t); 791 len = mp->m_len; 792 } 793 xfer = (left > len) ? len : left; 794 #ifdef notdef 795 /* Not Yet.. */ 796 if (uiop->uio_iov->iov_op != NULL) 797 (*(uiop->uio_iov->iov_op)) 798 (mbufcp, uiocp, xfer); 799 else 800 #endif 801 if (uiop->uio_segflg == UIO_SYSSPACE) 802 bcopy(mbufcp, uiocp, xfer); 803 else 804 copyout(mbufcp, uiocp, xfer); 805 left -= xfer; 806 len -= xfer; 807 mbufcp += xfer; 808 uiocp += xfer; 809 uiop->uio_offset += xfer; 810 uiop->uio_resid -= xfer; 811 } 812 if (uiop->uio_iov->iov_len <= siz) { 813 uiop->uio_iovcnt--; 814 uiop->uio_iov++; 815 } else { 816 uiop->uio_iov->iov_base += uiosiz; 817 uiop->uio_iov->iov_len -= uiosiz; 818 } 819 siz -= uiosiz; 820 } 821 *dpos = mbufcp; 822 *mrep = mp; 823 if (rem > 0) { 824 if (len < rem) 825 error = nfs_adv(mrep, dpos, rem, len); 826 else 827 *dpos += rem; 828 } 829 return (error); 830 } 831 832 /* 833 * copies a uio scatter/gather list to an mbuf chain. 834 * NOTE: can ony handle iovcnt == 1 835 */ 836 int 837 nfsm_uiotombuf(uiop, mq, siz, bpos) 838 register struct uio *uiop; 839 struct mbuf **mq; 840 int siz; 841 caddr_t *bpos; 842 { 843 register char *uiocp; 844 register struct mbuf *mp, *mp2; 845 register int xfer, left, mlen; 846 int uiosiz, clflg, rem; 847 char *cp; 848 849 #ifdef DIAGNOSTIC 850 if (uiop->uio_iovcnt != 1) 851 panic("nfsm_uiotombuf: iovcnt != 1"); 852 #endif 853 854 if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 855 clflg = 1; 856 else 857 clflg = 0; 858 rem = nfsm_rndup(siz)-siz; 859 mp = mp2 = *mq; 860 while (siz > 0) { 861 left = uiop->uio_iov->iov_len; 862 uiocp = uiop->uio_iov->iov_base; 863 if (left > siz) 864 left = siz; 865 uiosiz = left; 866 while (left > 0) { 867 mlen = M_TRAILINGSPACE(mp); 868 if (mlen == 0) { 869 MGET(mp, M_WAIT, MT_DATA); 870 if (clflg) 871 MCLGET(mp, M_WAIT); 872 mp->m_len = 0; 873 mp2->m_next = mp; 874 mp2 = mp; 875 mlen = M_TRAILINGSPACE(mp); 876 } 877 xfer = (left > mlen) ? mlen : left; 878 #ifdef notdef 879 /* Not Yet.. */ 880 if (uiop->uio_iov->iov_op != NULL) 881 (*(uiop->uio_iov->iov_op)) 882 (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 883 else 884 #endif 885 if (uiop->uio_segflg == UIO_SYSSPACE) 886 bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 887 else 888 copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 889 mp->m_len += xfer; 890 left -= xfer; 891 uiocp += xfer; 892 uiop->uio_offset += xfer; 893 uiop->uio_resid -= xfer; 894 } 895 uiop->uio_iov->iov_base += uiosiz; 896 uiop->uio_iov->iov_len -= uiosiz; 897 siz -= uiosiz; 898 } 899 if (rem > 0) { 900 if (rem > M_TRAILINGSPACE(mp)) { 901 MGET(mp, M_WAIT, MT_DATA); 902 mp->m_len = 0; 903 mp2->m_next = mp; 904 } 905 cp = mtod(mp, caddr_t)+mp->m_len; 906 for (left = 0; left < rem; left++) 907 *cp++ = '\0'; 908 mp->m_len += rem; 909 *bpos = cp; 910 } else 911 *bpos = mtod(mp, caddr_t)+mp->m_len; 912 *mq = mp; 913 return (0); 914 } 915 916 /* 917 * Get at least "siz" bytes of correctly aligned data. 918 * When called the mbuf pointers are not necessarily correct, 919 * dsosp points to what ought to be in m_data and left contains 920 * what ought to be in m_len. 921 * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 922 * cases. (The macros use the vars. dpos and dpos2) 923 */ 924 int 925 nfsm_disct(mdp, dposp, siz, left, cp2) 926 struct mbuf **mdp; 927 caddr_t *dposp; 928 int siz; 929 int left; 930 caddr_t *cp2; 931 { 932 register struct mbuf *m1, *m2; 933 struct mbuf *havebuf = NULL; 934 caddr_t src = *dposp; 935 caddr_t dst; 936 int len; 937 938 #ifdef DEBUG 939 if (left < 0) 940 panic("nfsm_disct: left < 0"); 941 #endif 942 m1 = *mdp; 943 /* 944 * Skip through the mbuf chain looking for an mbuf with 945 * some data. If the first mbuf found has enough data 946 * and it is correctly aligned return it. 947 */ 948 while (left == 0) { 949 havebuf = m1; 950 *mdp = m1 = m1->m_next; 951 if (m1 == NULL) 952 return (EBADRPC); 953 src = mtod(m1, caddr_t); 954 left = m1->m_len; 955 /* 956 * If we start a new mbuf and it is big enough 957 * and correctly aligned just return it, don't 958 * do any pull up. 959 */ 960 if (left >= siz && nfsm_aligned(src)) { 961 *cp2 = src; 962 *dposp = src + siz; 963 return (0); 964 } 965 } 966 if (m1->m_flags & M_EXT) { 967 if (havebuf) { 968 /* If the first mbuf with data has external data 969 * and there is a previous empty mbuf use it 970 * to move the data into. 971 */ 972 m2 = m1; 973 *mdp = m1 = havebuf; 974 if (m1->m_flags & M_EXT) { 975 MEXTREMOVE(m1); 976 } 977 } else { 978 /* 979 * If the first mbuf has a external data 980 * and there is no previous empty mbuf 981 * allocate a new mbuf and move the external 982 * data to the new mbuf. Also make the first 983 * mbuf look empty. 984 */ 985 m2 = m_get(M_WAIT, MT_DATA); 986 m2->m_ext = m1->m_ext; 987 m2->m_data = src; 988 m2->m_len = left; 989 MCLADDREFERENCE(m1, m2); 990 MEXTREMOVE(m1); 991 m2->m_next = m1->m_next; 992 m1->m_next = m2; 993 } 994 m1->m_len = 0; 995 dst = m1->m_dat; 996 } else { 997 /* 998 * If the first mbuf has no external data 999 * move the data to the front of the mbuf. 1000 */ 1001 if ((dst = m1->m_dat) != src) 1002 ovbcopy(src, dst, left); 1003 dst += left; 1004 m1->m_len = left; 1005 m2 = m1->m_next; 1006 } 1007 m1->m_flags &= ~M_PKTHDR; 1008 *cp2 = m1->m_data = m1->m_dat; /* data is at beginning of buffer */ 1009 *dposp = mtod(m1, caddr_t) + siz; 1010 /* 1011 * Loop through mbufs pulling data up into first mbuf until 1012 * the first mbuf is full or there is no more data to 1013 * pullup. 1014 */ 1015 while ((len = (MLEN - m1->m_len)) != 0 && m2) { 1016 if ((len = min(len, m2->m_len)) != 0) 1017 bcopy(m2->m_data, dst, len); 1018 m1->m_len += len; 1019 dst += len; 1020 m2->m_data += len; 1021 m2->m_len -= len; 1022 m2 = m2->m_next; 1023 } 1024 if (m1->m_len < siz) 1025 return (EBADRPC); 1026 return (0); 1027 } 1028 1029 /* 1030 * Advance the position in the mbuf chain. 1031 */ 1032 int 1033 nfs_adv(mdp, dposp, offs, left) 1034 struct mbuf **mdp; 1035 caddr_t *dposp; 1036 int offs; 1037 int left; 1038 { 1039 register struct mbuf *m; 1040 register int s; 1041 1042 m = *mdp; 1043 s = left; 1044 while (s < offs) { 1045 offs -= s; 1046 m = m->m_next; 1047 if (m == NULL) 1048 return (EBADRPC); 1049 s = m->m_len; 1050 } 1051 *mdp = m; 1052 *dposp = mtod(m, caddr_t)+offs; 1053 return (0); 1054 } 1055 1056 /* 1057 * Copy a string into mbufs for the hard cases... 1058 */ 1059 int 1060 nfsm_strtmbuf(mb, bpos, cp, siz) 1061 struct mbuf **mb; 1062 char **bpos; 1063 const char *cp; 1064 long siz; 1065 { 1066 register struct mbuf *m1 = NULL, *m2; 1067 long left, xfer, len, tlen; 1068 u_int32_t *tl; 1069 int putsize; 1070 1071 putsize = 1; 1072 m2 = *mb; 1073 left = M_TRAILINGSPACE(m2); 1074 if (left > 0) { 1075 tl = ((u_int32_t *)(*bpos)); 1076 *tl++ = txdr_unsigned(siz); 1077 putsize = 0; 1078 left -= NFSX_UNSIGNED; 1079 m2->m_len += NFSX_UNSIGNED; 1080 if (left > 0) { 1081 bcopy(cp, (caddr_t) tl, left); 1082 siz -= left; 1083 cp += left; 1084 m2->m_len += left; 1085 left = 0; 1086 } 1087 } 1088 /* Loop around adding mbufs */ 1089 while (siz > 0) { 1090 MGET(m1, M_WAIT, MT_DATA); 1091 if (siz > MLEN) 1092 MCLGET(m1, M_WAIT); 1093 m1->m_len = NFSMSIZ(m1); 1094 m2->m_next = m1; 1095 m2 = m1; 1096 tl = mtod(m1, u_int32_t *); 1097 tlen = 0; 1098 if (putsize) { 1099 *tl++ = txdr_unsigned(siz); 1100 m1->m_len -= NFSX_UNSIGNED; 1101 tlen = NFSX_UNSIGNED; 1102 putsize = 0; 1103 } 1104 if (siz < m1->m_len) { 1105 len = nfsm_rndup(siz); 1106 xfer = siz; 1107 if (xfer < len) 1108 *(tl+(xfer>>2)) = 0; 1109 } else { 1110 xfer = len = m1->m_len; 1111 } 1112 bcopy(cp, (caddr_t) tl, xfer); 1113 m1->m_len = len+tlen; 1114 siz -= xfer; 1115 cp += xfer; 1116 } 1117 *mb = m1; 1118 *bpos = mtod(m1, caddr_t)+m1->m_len; 1119 return (0); 1120 } 1121 1122 /* 1123 * Called once before VFS init to initialize shared and 1124 * server-specific data structures. 1125 */ 1126 void 1127 nfs_init() 1128 { 1129 1130 #if !defined(alpha) && defined(DIAGNOSTIC) 1131 /* 1132 * Check to see if major data structures haven't bloated. 1133 */ 1134 if (sizeof (struct nfsnode) > NFS_NODEALLOC) { 1135 printf("struct nfsnode bloated (> %dbytes)\n", NFS_NODEALLOC); 1136 printf("Try reducing NFS_SMALLFH\n"); 1137 } 1138 if (sizeof (struct nfsmount) > NFS_MNTALLOC) { 1139 printf("struct nfsmount bloated (> %dbytes)\n", NFS_MNTALLOC); 1140 printf("Try reducing NFS_MUIDHASHSIZ\n"); 1141 } 1142 if (sizeof (struct nfssvc_sock) > NFS_SVCALLOC) { 1143 printf("struct nfssvc_sock bloated (> %dbytes)\n",NFS_SVCALLOC); 1144 printf("Try reducing NFS_UIDHASHSIZ\n"); 1145 } 1146 if (sizeof (struct nfsuid) > NFS_UIDALLOC) { 1147 printf("struct nfsuid bloated (> %dbytes)\n",NFS_UIDALLOC); 1148 printf("Try unionizing the nu_nickname and nu_flag fields\n"); 1149 } 1150 #endif 1151 1152 nfsrtt.pos = 0; 1153 rpc_vers = txdr_unsigned(RPC_VER2); 1154 rpc_call = txdr_unsigned(RPC_CALL); 1155 rpc_reply = txdr_unsigned(RPC_REPLY); 1156 rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 1157 rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 1158 rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 1159 rpc_autherr = txdr_unsigned(RPC_AUTHERR); 1160 rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 1161 rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 1162 nfs_prog = txdr_unsigned(NFS_PROG); 1163 nqnfs_prog = txdr_unsigned(NQNFS_PROG); 1164 nfs_true = txdr_unsigned(TRUE); 1165 nfs_false = txdr_unsigned(FALSE); 1166 nfs_xdrneg1 = txdr_unsigned(-1); 1167 nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 1168 if (nfs_ticks < 1) 1169 nfs_ticks = 1; 1170 #ifdef NFSSERVER 1171 nfsrv_init(0); /* Init server data structures */ 1172 nfsrv_initcache(); /* Init the server request cache */ 1173 #endif /* NFSSERVER */ 1174 1175 /* 1176 * Initialize the nqnfs data structures. 1177 */ 1178 if (nqnfsstarttime == 0) { 1179 nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease 1180 + nqsrv_clockskew + nqsrv_writeslack; 1181 NQLOADNOVRAM(nqnfsstarttime); 1182 CIRCLEQ_INIT(&nqtimerhead); 1183 nqfhhashtbl = hashinit(NQLCHSZ, M_NQLEASE, &nqfhhash); 1184 } 1185 1186 /* 1187 * Initialize reply list and start timer 1188 */ 1189 TAILQ_INIT(&nfs_reqq); 1190 nfs_timer(NULL); 1191 } 1192 1193 #ifdef NFS 1194 /* 1195 * Called once at VFS init to initialize client-specific data structures. 1196 */ 1197 void 1198 nfs_vfs_init() 1199 { 1200 register int i; 1201 1202 /* Ensure async daemons disabled */ 1203 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) { 1204 nfs_iodwant[i] = (struct proc *)0; 1205 nfs_iodmount[i] = (struct nfsmount *)0; 1206 } 1207 nfs_nhinit(); /* Init the nfsnode table */ 1208 } 1209 1210 /* 1211 * Attribute cache routines. 1212 * nfs_loadattrcache() - loads or updates the cache contents from attributes 1213 * that are on the mbuf list 1214 * nfs_getattrcache() - returns valid attributes if found in cache, returns 1215 * error otherwise 1216 */ 1217 1218 /* 1219 * Load the attribute cache (that lives in the nfsnode entry) with 1220 * the values on the mbuf list and 1221 * Iff vap not NULL 1222 * copy the attributes to *vaper 1223 */ 1224 int 1225 nfsm_loadattrcache(vpp, mdp, dposp, vaper) 1226 struct vnode **vpp; 1227 struct mbuf **mdp; 1228 caddr_t *dposp; 1229 struct vattr *vaper; 1230 { 1231 register int32_t t1; 1232 caddr_t cp2; 1233 int error = 0; 1234 struct mbuf *md; 1235 int v3 = NFS_ISV3(*vpp); 1236 1237 md = *mdp; 1238 t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 1239 error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2); 1240 if (error) 1241 return (error); 1242 return nfs_loadattrcache(vpp, (struct nfs_fattr *)cp2, vaper); 1243 } 1244 1245 int 1246 nfs_loadattrcache(vpp, fp, vaper) 1247 struct vnode **vpp; 1248 struct nfs_fattr *fp; 1249 struct vattr *vaper; 1250 { 1251 register struct vnode *vp = *vpp; 1252 register struct vattr *vap; 1253 int v3 = NFS_ISV3(vp); 1254 enum vtype vtyp; 1255 u_short vmode; 1256 struct timespec mtime; 1257 struct vnode *nvp; 1258 int32_t rdev; 1259 register struct nfsnode *np; 1260 extern int (**spec_nfsv2nodeop_p) __P((void *)); 1261 1262 if (v3) { 1263 vtyp = nfsv3tov_type(fp->fa_type); 1264 vmode = fxdr_unsigned(u_short, fp->fa_mode); 1265 rdev = makedev(fxdr_unsigned(u_char, fp->fa3_rdev.specdata1), 1266 fxdr_unsigned(u_char, fp->fa3_rdev.specdata2)); 1267 fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 1268 } else { 1269 vtyp = nfsv2tov_type(fp->fa_type); 1270 vmode = fxdr_unsigned(u_short, fp->fa_mode); 1271 if (vtyp == VNON || vtyp == VREG) 1272 vtyp = IFTOVT(vmode); 1273 rdev = fxdr_unsigned(int32_t, fp->fa2_rdev); 1274 fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 1275 1276 /* 1277 * Really ugly NFSv2 kludge. 1278 */ 1279 if (vtyp == VCHR && rdev == 0xffffffff) 1280 vtyp = VFIFO; 1281 } 1282 1283 /* 1284 * If v_type == VNON it is a new node, so fill in the v_type, 1285 * n_mtime fields. Check to see if it represents a special 1286 * device, and if so, check for a possible alias. Once the 1287 * correct vnode has been obtained, fill in the rest of the 1288 * information. 1289 */ 1290 np = VTONFS(vp); 1291 if (vp->v_type != vtyp) { 1292 vp->v_type = vtyp; 1293 if (vp->v_type == VFIFO) { 1294 #ifndef FIFO 1295 return (EOPNOTSUPP); 1296 #else 1297 extern int (**fifo_nfsv2nodeop_p) __P((void *)); 1298 vp->v_op = fifo_nfsv2nodeop_p; 1299 #endif /* FIFO */ 1300 } 1301 if (vp->v_type == VCHR || vp->v_type == VBLK) { 1302 vp->v_op = spec_nfsv2nodeop_p; 1303 nvp = checkalias(vp, (dev_t)rdev, vp->v_mount); 1304 if (nvp) { 1305 /* 1306 * Discard unneeded vnode, but save its nfsnode. 1307 * Since the nfsnode does not have a lock, its 1308 * vnode lock has to be carried over. 1309 */ 1310 #ifdef Lite2_integrated 1311 nvp->v_vnlock = vp->v_vnlock; 1312 vp->v_vnlock = NULL; 1313 #endif 1314 nvp->v_data = vp->v_data; 1315 vp->v_data = NULL; 1316 vp->v_op = spec_vnodeop_p; 1317 vrele(vp); 1318 vgone(vp); 1319 /* 1320 * Reinitialize aliased node. 1321 */ 1322 np->n_vnode = nvp; 1323 *vpp = vp = nvp; 1324 } 1325 } 1326 np->n_mtime = mtime.tv_sec; 1327 } 1328 vap = &np->n_vattr; 1329 vap->va_type = vtyp; 1330 vap->va_mode = vmode & ALLPERMS; 1331 vap->va_rdev = (dev_t)rdev; 1332 vap->va_mtime = mtime; 1333 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 1334 if (v3) { 1335 vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1336 vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 1337 vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 1338 fxdr_hyper(&fp->fa3_size, &vap->va_size); 1339 vap->va_blocksize = NFS_FABLKSIZE; 1340 fxdr_hyper(&fp->fa3_used, &vap->va_bytes); 1341 vap->va_fileid = fxdr_unsigned(int32_t, 1342 fp->fa3_fileid.nfsuquad[1]); 1343 fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 1344 fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime); 1345 vap->va_flags = 0; 1346 vap->va_filerev = 0; 1347 } else { 1348 vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1349 vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 1350 vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 1351 vap->va_size = fxdr_unsigned(u_int32_t, fp->fa2_size); 1352 vap->va_blocksize = fxdr_unsigned(int32_t, fp->fa2_blocksize); 1353 vap->va_bytes = fxdr_unsigned(int32_t, fp->fa2_blocks) 1354 * NFS_FABLKSIZE; 1355 vap->va_fileid = fxdr_unsigned(int32_t, fp->fa2_fileid); 1356 fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 1357 vap->va_flags = 0; 1358 vap->va_ctime.tv_sec = fxdr_unsigned(u_int32_t, 1359 fp->fa2_ctime.nfsv2_sec); 1360 vap->va_ctime.tv_nsec = 0; 1361 vap->va_gen = fxdr_unsigned(u_int32_t,fp->fa2_ctime.nfsv2_usec); 1362 vap->va_filerev = 0; 1363 } 1364 if (vap->va_size != np->n_size) { 1365 if (vap->va_type == VREG) { 1366 if (np->n_flag & NMODIFIED) { 1367 if (vap->va_size < np->n_size) 1368 vap->va_size = np->n_size; 1369 else 1370 np->n_size = vap->va_size; 1371 } else 1372 np->n_size = vap->va_size; 1373 vnode_pager_setsize(vp, np->n_size); 1374 } else 1375 np->n_size = vap->va_size; 1376 } 1377 np->n_attrstamp = time.tv_sec; 1378 if (vaper != NULL) { 1379 bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 1380 if (np->n_flag & NCHG) { 1381 if (np->n_flag & NACC) 1382 vaper->va_atime = np->n_atim; 1383 if (np->n_flag & NUPD) 1384 vaper->va_mtime = np->n_mtim; 1385 } 1386 } 1387 return (0); 1388 } 1389 1390 /* 1391 * Check the time stamp 1392 * If the cache is valid, copy contents to *vap and return 0 1393 * otherwise return an error 1394 */ 1395 int 1396 nfs_getattrcache(vp, vaper) 1397 register struct vnode *vp; 1398 struct vattr *vaper; 1399 { 1400 register struct nfsnode *np = VTONFS(vp); 1401 register struct vattr *vap; 1402 1403 if ((time.tv_sec - np->n_attrstamp) >= NFS_ATTRTIMEO(np)) { 1404 nfsstats.attrcache_misses++; 1405 return (ENOENT); 1406 } 1407 nfsstats.attrcache_hits++; 1408 vap = &np->n_vattr; 1409 if (vap->va_size != np->n_size) { 1410 if (vap->va_type == VREG) { 1411 if (np->n_flag & NMODIFIED) { 1412 if (vap->va_size < np->n_size) 1413 vap->va_size = np->n_size; 1414 else 1415 np->n_size = vap->va_size; 1416 } else 1417 np->n_size = vap->va_size; 1418 vnode_pager_setsize(vp, np->n_size); 1419 } else 1420 np->n_size = vap->va_size; 1421 } 1422 bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr)); 1423 if (np->n_flag & NCHG) { 1424 if (np->n_flag & NACC) 1425 vaper->va_atime = np->n_atim; 1426 if (np->n_flag & NUPD) 1427 vaper->va_mtime = np->n_mtim; 1428 } 1429 return (0); 1430 } 1431 #endif /* NFS */ 1432 1433 /* 1434 * Set up nameidata for a lookup() call and do it. 1435 * 1436 * If pubflag is set, this call is done for a lookup operation on the 1437 * public filehandle. In that case we allow crossing mountpoints and 1438 * absolute pathnames. However, the caller is expected to check that 1439 * the lookup result is within the public fs, and deny access if 1440 * it is not. 1441 */ 1442 int 1443 nfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag, pubflag) 1444 register struct nameidata *ndp; 1445 fhandle_t *fhp; 1446 int len; 1447 struct nfssvc_sock *slp; 1448 struct mbuf *nam; 1449 struct mbuf **mdp; 1450 caddr_t *dposp; 1451 struct vnode **retdirp; 1452 struct proc *p; 1453 int kerbflag, pubflag; 1454 { 1455 register int i, rem; 1456 register struct mbuf *md; 1457 register char *fromcp, *tocp, *cp; 1458 struct iovec aiov; 1459 struct uio auio; 1460 struct vnode *dp; 1461 int error, rdonly, linklen; 1462 struct componentname *cnp = &ndp->ni_cnd; 1463 1464 *retdirp = (struct vnode *)0; 1465 MALLOC(cnp->cn_pnbuf, char *, len + 1, M_NAMEI, M_WAITOK); 1466 /* 1467 * Copy the name from the mbuf list to ndp->ni_pnbuf 1468 * and set the various ndp fields appropriately. 1469 */ 1470 fromcp = *dposp; 1471 tocp = cnp->cn_pnbuf; 1472 md = *mdp; 1473 rem = mtod(md, caddr_t) + md->m_len - fromcp; 1474 for (i = 0; i < len; i++) { 1475 while (rem == 0) { 1476 md = md->m_next; 1477 if (md == NULL) { 1478 error = EBADRPC; 1479 goto out; 1480 } 1481 fromcp = mtod(md, caddr_t); 1482 rem = md->m_len; 1483 } 1484 if (*fromcp == '\0' || (!pubflag && *fromcp == '/')) { 1485 error = EACCES; 1486 goto out; 1487 } 1488 *tocp++ = *fromcp++; 1489 rem--; 1490 } 1491 *tocp = '\0'; 1492 *mdp = md; 1493 *dposp = fromcp; 1494 len = nfsm_rndup(len)-len; 1495 if (len > 0) { 1496 if (rem >= len) 1497 *dposp += len; 1498 else if ((error = nfs_adv(mdp, dposp, len, rem)) != 0) 1499 goto out; 1500 } 1501 1502 /* 1503 * Extract and set starting directory. 1504 */ 1505 error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp, 1506 nam, &rdonly, kerbflag, pubflag); 1507 if (error) 1508 goto out; 1509 if (dp->v_type != VDIR) { 1510 vrele(dp); 1511 error = ENOTDIR; 1512 goto out; 1513 } 1514 1515 if (rdonly) 1516 cnp->cn_flags |= RDONLY; 1517 1518 *retdirp = dp; 1519 1520 if (pubflag) { 1521 /* 1522 * Oh joy. For WebNFS, handle those pesky '%' escapes, 1523 * and the 'native path' indicator. 1524 */ 1525 MALLOC(cp, char *, MAXPATHLEN, M_NAMEI, M_WAITOK); 1526 fromcp = cnp->cn_pnbuf; 1527 tocp = cp; 1528 if ((unsigned char)*fromcp >= WEBNFS_SPECCHAR_START) { 1529 switch ((unsigned char)*fromcp) { 1530 case WEBNFS_NATIVE_CHAR: 1531 /* 1532 * 'Native' path for us is the same 1533 * as a path according to the NFS spec, 1534 * just skip the escape char. 1535 */ 1536 fromcp++; 1537 break; 1538 /* 1539 * More may be added in the future, range 0x80-0xff 1540 */ 1541 default: 1542 error = EIO; 1543 FREE(cp, M_NAMEI); 1544 goto out; 1545 } 1546 } 1547 /* 1548 * Translate the '%' escapes, URL-style. 1549 */ 1550 while (*fromcp != '\0') { 1551 if (*fromcp == WEBNFS_ESC_CHAR) { 1552 if (fromcp[1] != '\0' && fromcp[2] != '\0') { 1553 fromcp++; 1554 *tocp++ = HEXSTRTOI(fromcp); 1555 fromcp += 2; 1556 continue; 1557 } else { 1558 error = ENOENT; 1559 FREE(cp, M_NAMEI); 1560 goto out; 1561 } 1562 } else 1563 *tocp++ = *fromcp++; 1564 } 1565 *tocp = '\0'; 1566 FREE(cnp->cn_pnbuf, M_NAMEI); 1567 cnp->cn_pnbuf = cp; 1568 } 1569 1570 ndp->ni_pathlen = (tocp - cnp->cn_pnbuf) + 1; 1571 ndp->ni_segflg = UIO_SYSSPACE; 1572 1573 if (pubflag) { 1574 ndp->ni_rootdir = rootvnode; 1575 ndp->ni_loopcnt = 0; 1576 if (cnp->cn_pnbuf[0] == '/') 1577 dp = rootvnode; 1578 } else { 1579 cnp->cn_flags |= NOCROSSMOUNT; 1580 } 1581 1582 cnp->cn_proc = p; 1583 VREF(dp); 1584 1585 for (;;) { 1586 cnp->cn_nameptr = cnp->cn_pnbuf; 1587 ndp->ni_startdir = dp; 1588 /* 1589 * And call lookup() to do the real work 1590 */ 1591 error = lookup(ndp); 1592 if (error) 1593 break; 1594 /* 1595 * Check for encountering a symbolic link 1596 */ 1597 if ((cnp->cn_flags & ISSYMLINK) == 0) { 1598 if (cnp->cn_flags & (SAVENAME | SAVESTART)) { 1599 cnp->cn_flags |= HASBUF; 1600 return (0); 1601 } 1602 break; 1603 } else { 1604 if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 1605 VOP_UNLOCK(ndp->ni_dvp); 1606 if (!pubflag) { 1607 vrele(ndp->ni_dvp); 1608 vput(ndp->ni_vp); 1609 ndp->ni_vp = NULL; 1610 error = EINVAL; 1611 break; 1612 } 1613 1614 if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 1615 error = ELOOP; 1616 break; 1617 } 1618 if (ndp->ni_pathlen > 1) 1619 MALLOC(cp, char *, MAXPATHLEN, M_NAMEI, M_WAITOK); 1620 else 1621 cp = cnp->cn_pnbuf; 1622 aiov.iov_base = cp; 1623 aiov.iov_len = MAXPATHLEN; 1624 auio.uio_iov = &aiov; 1625 auio.uio_iovcnt = 1; 1626 auio.uio_offset = 0; 1627 auio.uio_rw = UIO_READ; 1628 auio.uio_segflg = UIO_SYSSPACE; 1629 auio.uio_procp = (struct proc *)0; 1630 auio.uio_resid = MAXPATHLEN; 1631 error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 1632 if (error) { 1633 badlink: 1634 if (ndp->ni_pathlen > 1) 1635 FREE(cp, M_NAMEI); 1636 break; 1637 } 1638 linklen = MAXPATHLEN - auio.uio_resid; 1639 if (linklen == 0) { 1640 error = ENOENT; 1641 goto badlink; 1642 } 1643 if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 1644 error = ENAMETOOLONG; 1645 goto badlink; 1646 } 1647 if (ndp->ni_pathlen > 1) { 1648 bcopy(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 1649 FREE(cnp->cn_pnbuf, M_NAMEI); 1650 cnp->cn_pnbuf = cp; 1651 } else 1652 cnp->cn_pnbuf[linklen] = '\0'; 1653 ndp->ni_pathlen += linklen; 1654 vput(ndp->ni_vp); 1655 dp = ndp->ni_dvp; 1656 /* 1657 * Check if root directory should replace current directory. 1658 */ 1659 if (cnp->cn_pnbuf[0] == '/') { 1660 vrele(dp); 1661 dp = ndp->ni_rootdir; 1662 VREF(dp); 1663 } 1664 } 1665 } 1666 out: 1667 FREE(cnp->cn_pnbuf, M_NAMEI); 1668 return (error); 1669 } 1670 1671 /* 1672 * A fiddled version of m_adj() that ensures null fill to a long 1673 * boundary and only trims off the back end 1674 */ 1675 void 1676 nfsm_adj(mp, len, nul) 1677 struct mbuf *mp; 1678 register int len; 1679 int nul; 1680 { 1681 register struct mbuf *m; 1682 register int count, i; 1683 register char *cp; 1684 1685 /* 1686 * Trim from tail. Scan the mbuf chain, 1687 * calculating its length and finding the last mbuf. 1688 * If the adjustment only affects this mbuf, then just 1689 * adjust and return. Otherwise, rescan and truncate 1690 * after the remaining size. 1691 */ 1692 count = 0; 1693 m = mp; 1694 for (;;) { 1695 count += m->m_len; 1696 if (m->m_next == (struct mbuf *)0) 1697 break; 1698 m = m->m_next; 1699 } 1700 if (m->m_len > len) { 1701 m->m_len -= len; 1702 if (nul > 0) { 1703 cp = mtod(m, caddr_t)+m->m_len-nul; 1704 for (i = 0; i < nul; i++) 1705 *cp++ = '\0'; 1706 } 1707 return; 1708 } 1709 count -= len; 1710 if (count < 0) 1711 count = 0; 1712 /* 1713 * Correct length for chain is "count". 1714 * Find the mbuf with last data, adjust its length, 1715 * and toss data from remaining mbufs on chain. 1716 */ 1717 for (m = mp; m; m = m->m_next) { 1718 if (m->m_len >= count) { 1719 m->m_len = count; 1720 if (nul > 0) { 1721 cp = mtod(m, caddr_t)+m->m_len-nul; 1722 for (i = 0; i < nul; i++) 1723 *cp++ = '\0'; 1724 } 1725 break; 1726 } 1727 count -= m->m_len; 1728 } 1729 for (m = m->m_next;m;m = m->m_next) 1730 m->m_len = 0; 1731 } 1732 1733 /* 1734 * Make these functions instead of macros, so that the kernel text size 1735 * doesn't get too big... 1736 */ 1737 void 1738 nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 1739 struct nfsrv_descript *nfsd; 1740 int before_ret; 1741 register struct vattr *before_vap; 1742 int after_ret; 1743 struct vattr *after_vap; 1744 struct mbuf **mbp; 1745 char **bposp; 1746 { 1747 register struct mbuf *mb = *mbp, *mb2; 1748 register char *bpos = *bposp; 1749 register u_int32_t *tl; 1750 1751 if (before_ret) { 1752 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 1753 *tl = nfs_false; 1754 } else { 1755 nfsm_build(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 1756 *tl++ = nfs_true; 1757 txdr_hyper(&(before_vap->va_size), tl); 1758 tl += 2; 1759 txdr_nfsv3time(&(before_vap->va_mtime), tl); 1760 tl += 2; 1761 txdr_nfsv3time(&(before_vap->va_ctime), tl); 1762 } 1763 *bposp = bpos; 1764 *mbp = mb; 1765 nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 1766 } 1767 1768 void 1769 nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 1770 struct nfsrv_descript *nfsd; 1771 int after_ret; 1772 struct vattr *after_vap; 1773 struct mbuf **mbp; 1774 char **bposp; 1775 { 1776 register struct mbuf *mb = *mbp, *mb2; 1777 register char *bpos = *bposp; 1778 register u_int32_t *tl; 1779 register struct nfs_fattr *fp; 1780 1781 if (after_ret) { 1782 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 1783 *tl = nfs_false; 1784 } else { 1785 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_V3FATTR); 1786 *tl++ = nfs_true; 1787 fp = (struct nfs_fattr *)tl; 1788 nfsm_srvfattr(nfsd, after_vap, fp); 1789 } 1790 *mbp = mb; 1791 *bposp = bpos; 1792 } 1793 1794 void 1795 nfsm_srvfattr(nfsd, vap, fp) 1796 register struct nfsrv_descript *nfsd; 1797 register struct vattr *vap; 1798 register struct nfs_fattr *fp; 1799 { 1800 1801 fp->fa_nlink = txdr_unsigned(vap->va_nlink); 1802 fp->fa_uid = txdr_unsigned(vap->va_uid); 1803 fp->fa_gid = txdr_unsigned(vap->va_gid); 1804 if (nfsd->nd_flag & ND_NFSV3) { 1805 fp->fa_type = vtonfsv3_type(vap->va_type); 1806 fp->fa_mode = vtonfsv3_mode(vap->va_mode); 1807 txdr_hyper(&vap->va_size, &fp->fa3_size); 1808 txdr_hyper(&vap->va_bytes, &fp->fa3_used); 1809 fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 1810 fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 1811 fp->fa3_fsid.nfsuquad[0] = 0; 1812 fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 1813 fp->fa3_fileid.nfsuquad[0] = 0; 1814 fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid); 1815 txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 1816 txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 1817 txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 1818 } else { 1819 fp->fa_type = vtonfsv2_type(vap->va_type); 1820 fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 1821 fp->fa2_size = txdr_unsigned(vap->va_size); 1822 fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 1823 if (vap->va_type == VFIFO) 1824 fp->fa2_rdev = 0xffffffff; 1825 else 1826 fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 1827 fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 1828 fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 1829 fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 1830 txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 1831 txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 1832 txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 1833 } 1834 } 1835 1836 /* 1837 * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 1838 * - look up fsid in mount list (if not found ret error) 1839 * - get vp and export rights by calling VFS_FHTOVP() 1840 * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 1841 * - if not lockflag unlock it with VOP_UNLOCK() 1842 */ 1843 int 1844 nfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag, pubflag) 1845 fhandle_t *fhp; 1846 int lockflag; 1847 struct vnode **vpp; 1848 struct ucred *cred; 1849 struct nfssvc_sock *slp; 1850 struct mbuf *nam; 1851 int *rdonlyp; 1852 int kerbflag; 1853 { 1854 #ifdef Lite2_integrated 1855 struct proc *p = curproc; /* XXX */ 1856 #endif 1857 register struct mount *mp; 1858 register int i; 1859 struct ucred *credanon; 1860 int error, exflags; 1861 struct sockaddr_in *saddr; 1862 1863 *vpp = (struct vnode *)0; 1864 1865 if (nfs_ispublicfh(fhp)) { 1866 if (!pubflag || !nfs_pub.np_valid) 1867 return (ESTALE); 1868 fhp = &nfs_pub.np_handle; 1869 } 1870 1871 #ifdef Lite2_integrated 1872 mp = vfs_getvfs(&fhp->fh_fsid); 1873 #else 1874 mp = getvfs(&fhp->fh_fsid); 1875 #endif 1876 if (!mp) 1877 return (ESTALE); 1878 error = VFS_FHTOVP(mp, &fhp->fh_fid, nam, vpp, &exflags, &credanon); 1879 if (error) 1880 return (error); 1881 1882 if (!(exflags & (MNT_EXNORESPORT|MNT_EXPUBLIC))) { 1883 saddr = mtod(nam, struct sockaddr_in *); 1884 if (saddr->sin_family == AF_INET && 1885 ntohs(saddr->sin_port) >= IPPORT_RESERVED) { 1886 vput(*vpp); 1887 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 1888 } 1889 } 1890 /* 1891 * Check/setup credentials. 1892 */ 1893 if (exflags & MNT_EXKERB) { 1894 if (!kerbflag) { 1895 vput(*vpp); 1896 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 1897 } 1898 } else if (kerbflag) { 1899 vput(*vpp); 1900 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 1901 } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) { 1902 cred->cr_uid = credanon->cr_uid; 1903 cred->cr_gid = credanon->cr_gid; 1904 for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++) 1905 cred->cr_groups[i] = credanon->cr_groups[i]; 1906 cred->cr_ngroups = i; 1907 } 1908 if (exflags & MNT_EXRDONLY) 1909 *rdonlyp = 1; 1910 else 1911 *rdonlyp = 0; 1912 if (!lockflag) 1913 #ifdef Lite2_integrated 1914 VOP_UNLOCK(*vpp, 0, p); 1915 #else 1916 VOP_UNLOCK(*vpp); 1917 #endif 1918 return (0); 1919 } 1920 1921 /* 1922 * WebNFS: check if a filehandle is a public filehandle. For v3, this 1923 * means a length of 0, for v2 it means all zeroes. nfsm_srvmtofh has 1924 * transformed this to all zeroes in both cases, so check for it. 1925 */ 1926 int 1927 nfs_ispublicfh(fhp) 1928 fhandle_t *fhp; 1929 { 1930 char *cp = (char *)fhp; 1931 int i; 1932 1933 for (i = 0; i < NFSX_V3FH; i++) 1934 if (*cp++ != 0) 1935 return (FALSE); 1936 return (TRUE); 1937 } 1938 1939 /* 1940 * This function compares two net addresses by family and returns TRUE 1941 * if they are the same host. 1942 * If there is any doubt, return FALSE. 1943 * The AF_INET family is handled as a special case so that address mbufs 1944 * don't need to be saved to store "struct in_addr", which is only 4 bytes. 1945 */ 1946 int 1947 netaddr_match(family, haddr, nam) 1948 int family; 1949 union nethostaddr *haddr; 1950 struct mbuf *nam; 1951 { 1952 register struct sockaddr_in *inetaddr; 1953 1954 switch (family) { 1955 case AF_INET: 1956 inetaddr = mtod(nam, struct sockaddr_in *); 1957 if (inetaddr->sin_family == AF_INET && 1958 inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 1959 return (1); 1960 break; 1961 #ifdef ISO 1962 case AF_ISO: 1963 { 1964 register struct sockaddr_iso *isoaddr1, *isoaddr2; 1965 1966 isoaddr1 = mtod(nam, struct sockaddr_iso *); 1967 isoaddr2 = mtod(haddr->had_nam, struct sockaddr_iso *); 1968 if (isoaddr1->siso_family == AF_ISO && 1969 isoaddr1->siso_nlen > 0 && 1970 isoaddr1->siso_nlen == isoaddr2->siso_nlen && 1971 SAME_ISOADDR(isoaddr1, isoaddr2)) 1972 return (1); 1973 break; 1974 } 1975 #endif /* ISO */ 1976 default: 1977 break; 1978 }; 1979 return (0); 1980 } 1981 1982 static nfsuint64 nfs_nullcookie = {{ 0, 0 }}; 1983 /* 1984 * This function finds the directory cookie that corresponds to the 1985 * logical byte offset given. 1986 */ 1987 nfsuint64 * 1988 nfs_getcookie(np, off, add) 1989 register struct nfsnode *np; 1990 off_t off; 1991 int add; 1992 { 1993 register struct nfsdmap *dp, *dp2; 1994 register int pos; 1995 1996 pos = off / NFS_DIRBLKSIZ; 1997 if (pos == 0) { 1998 #ifdef DIAGNOSTIC 1999 if (add) 2000 panic("nfs getcookie add at 0"); 2001 #endif 2002 return (&nfs_nullcookie); 2003 } 2004 pos--; 2005 dp = np->n_cookies.lh_first; 2006 if (!dp) { 2007 if (add) { 2008 MALLOC(dp, struct nfsdmap *, sizeof (struct nfsdmap), 2009 M_NFSDIROFF, M_WAITOK); 2010 dp->ndm_eocookie = 0; 2011 LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list); 2012 } else 2013 return ((nfsuint64 *)0); 2014 } 2015 while (pos >= NFSNUMCOOKIES) { 2016 pos -= NFSNUMCOOKIES; 2017 if (dp->ndm_list.le_next) { 2018 if (!add && dp->ndm_eocookie < NFSNUMCOOKIES && 2019 pos >= dp->ndm_eocookie) 2020 return ((nfsuint64 *)0); 2021 dp = dp->ndm_list.le_next; 2022 } else if (add) { 2023 MALLOC(dp2, struct nfsdmap *, sizeof (struct nfsdmap), 2024 M_NFSDIROFF, M_WAITOK); 2025 dp2->ndm_eocookie = 0; 2026 LIST_INSERT_AFTER(dp, dp2, ndm_list); 2027 dp = dp2; 2028 } else 2029 return ((nfsuint64 *)0); 2030 } 2031 if (pos >= dp->ndm_eocookie) { 2032 if (add) 2033 dp->ndm_eocookie = pos + 1; 2034 else 2035 return ((nfsuint64 *)0); 2036 } 2037 return (&dp->ndm_cookies[pos]); 2038 } 2039 2040 /* 2041 * Invalidate cached directory information, except for the actual directory 2042 * blocks (which are invalidated separately). 2043 * Done mainly to avoid the use of stale offset cookies. 2044 */ 2045 void 2046 nfs_invaldir(vp) 2047 register struct vnode *vp; 2048 { 2049 #ifdef notdef /* XXX */ 2050 register struct nfsnode *np = VTONFS(vp); 2051 2052 #ifdef DIAGNOSTIC 2053 if (vp->v_type != VDIR) 2054 panic("nfs: invaldir not dir"); 2055 #endif 2056 np->n_direofoffset = 0; 2057 np->n_cookieverf.nfsuquad[0] = 0; 2058 np->n_cookieverf.nfsuquad[1] = 0; 2059 if (np->n_cookies.lh_first) 2060 np->n_cookies.lh_first->ndm_eocookie = 0; 2061 #endif 2062 } 2063 2064 /* 2065 * The write verifier has changed (probably due to a server reboot), so all 2066 * B_NEEDCOMMIT blocks will have to be written again. Since they are on the 2067 * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT 2068 * flag. Once done the new write verifier can be set for the mount point. 2069 */ 2070 void 2071 nfs_clearcommit(mp) 2072 struct mount *mp; 2073 { 2074 register struct vnode *vp, *nvp; 2075 register struct buf *bp, *nbp; 2076 int s; 2077 2078 s = splbio(); 2079 loop: 2080 for (vp = mp->mnt_vnodelist.lh_first; vp; vp = nvp) { 2081 if (vp->v_mount != mp) /* Paranoia */ 2082 goto loop; 2083 nvp = vp->v_mntvnodes.le_next; 2084 for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { 2085 nbp = bp->b_vnbufs.le_next; 2086 if ((bp->b_flags & (B_BUSY | B_DELWRI | B_NEEDCOMMIT)) 2087 == (B_DELWRI | B_NEEDCOMMIT)) 2088 bp->b_flags &= ~B_NEEDCOMMIT; 2089 } 2090 } 2091 splx(s); 2092 } 2093 2094 /* 2095 * Map errnos to NFS error numbers. For Version 3 also filter out error 2096 * numbers not specified for the associated procedure. 2097 */ 2098 int 2099 nfsrv_errmap(nd, err) 2100 struct nfsrv_descript *nd; 2101 register int err; 2102 { 2103 register short *defaulterrp, *errp; 2104 2105 if (nd->nd_flag & ND_NFSV3) { 2106 if (nd->nd_procnum <= NFSPROC_COMMIT) { 2107 errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 2108 while (*++errp) { 2109 if (*errp == err) 2110 return (err); 2111 else if (*errp > err) 2112 break; 2113 } 2114 return ((int)*defaulterrp); 2115 } else 2116 return (err & 0xffff); 2117 } 2118 if (err <= ELAST) 2119 return ((int)nfsrv_v2errmap[err - 1]); 2120 return (NFSERR_IO); 2121 } 2122 2123 /* 2124 * Sort the group list in increasing numerical order. 2125 * (Insertion sort by Chris Torek, who was grossed out by the bubble sort 2126 * that used to be here.) 2127 */ 2128 void 2129 nfsrvw_sort(list, num) 2130 register gid_t *list; 2131 register int num; 2132 { 2133 register int i, j; 2134 gid_t v; 2135 2136 /* Insertion sort. */ 2137 for (i = 1; i < num; i++) { 2138 v = list[i]; 2139 /* find correct slot for value v, moving others up */ 2140 for (j = i; --j >= 0 && v < list[j];) 2141 list[j + 1] = list[j]; 2142 list[j + 1] = v; 2143 } 2144 } 2145 2146 /* 2147 * copy credentials making sure that the result can be compared with bcmp(). 2148 */ 2149 void 2150 nfsrv_setcred(incred, outcred) 2151 register struct ucred *incred, *outcred; 2152 { 2153 register int i; 2154 2155 bzero((caddr_t)outcred, sizeof (struct ucred)); 2156 outcred->cr_ref = 1; 2157 outcred->cr_uid = incred->cr_uid; 2158 outcred->cr_gid = incred->cr_gid; 2159 outcred->cr_ngroups = incred->cr_ngroups; 2160 for (i = 0; i < incred->cr_ngroups; i++) 2161 outcred->cr_groups[i] = incred->cr_groups[i]; 2162 nfsrvw_sort(outcred->cr_groups, outcred->cr_ngroups); 2163 } 2164
Indexes created Tue Sep 23 02:09:52 GMT 2025