1 /* $OpenBSD: nfs_subs.c,v 1.29 2000/06/26 22:48:15 art Exp $ */ 2 /* $NetBSD: nfs_subs.c,v 1.27.4.3 1996/07/08 20:34:24 jtc Exp $ */ 3 4 /* 5 * Copyright (c) 1989, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Rick Macklem at The University of Guelph. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)nfs_subs.c 8.8 (Berkeley) 5/22/95 40 */ 41 42 43 /* 44 * These functions support the macros and help fiddle mbuf chains for 45 * the nfs op functions. They do things like create the rpc header and 46 * copy data between mbuf chains and uio lists. 47 */ 48 #include <sys/param.h> 49 #include <sys/proc.h> 50 #include <sys/systm.h> 51 #include <sys/kernel.h> 52 #include <sys/mount.h> 53 #include <sys/vnode.h> 54 #include <sys/namei.h> 55 #include <sys/mbuf.h> 56 #include <sys/socket.h> 57 #include <sys/socketvar.h> 58 #include <sys/stat.h> 59 #include <sys/malloc.h> 60 #include <sys/time.h> 61 62 #include <vm/vm.h> 63 64 #include <nfs/rpcv2.h> 65 #include <nfs/nfsproto.h> 66 #include <nfs/nfsnode.h> 67 #include <nfs/nfs.h> 68 #include <nfs/xdr_subs.h> 69 #include <nfs/nfsm_subs.h> 70 #include <nfs/nfsmount.h> 71 #include <nfs/nqnfs.h> 72 #include <nfs/nfsrtt.h> 73 #include <nfs/nfs_var.h> 74 75 #include <miscfs/specfs/specdev.h> 76 77 #include <vm/vm.h> 78 79 #include <netinet/in.h> 80 #ifdef ISO 81 #include <netiso/iso.h> 82 #endif 83 84 #include <dev/rndvar.h> 85 86 #ifdef __GNUC__ 87 #define INLINE __inline 88 #else 89 #define INLINE 90 #endif 91 92 int nfs_attrtimeo __P((struct nfsnode *np)); 93 94 /* 95 * Data items converted to xdr at startup, since they are constant 96 * This is kinda hokey, but may save a little time doing byte swaps 97 */ 98 u_int32_t nfs_xdrneg1; 99 u_int32_t rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 100 rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 101 rpc_auth_kerb; 102 u_int32_t nfs_prog, nqnfs_prog, nfs_true, nfs_false; 103 104 /* And other global data */ 105 static u_int32_t nfs_xid = 0; 106 static u_int32_t nfs_xid_touched = 0; 107 nfstype nfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON, 108 NFCHR, NFNON }; 109 nfstype nfsv3_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK, 110 NFFIFO, NFNON }; 111 enum vtype nv2tov_type[8] = { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON }; 112 enum vtype nv3tov_type[8]={ VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO }; 113 int nfs_ticks; 114 115 /* 116 * Mapping of old NFS Version 2 RPC numbers to generic numbers. 117 */ 118 int nfsv3_procid[NFS_NPROCS] = { 119 NFSPROC_NULL, 120 NFSPROC_GETATTR, 121 NFSPROC_SETATTR, 122 NFSPROC_NOOP, 123 NFSPROC_LOOKUP, 124 NFSPROC_READLINK, 125 NFSPROC_READ, 126 NFSPROC_NOOP, 127 NFSPROC_WRITE, 128 NFSPROC_CREATE, 129 NFSPROC_REMOVE, 130 NFSPROC_RENAME, 131 NFSPROC_LINK, 132 NFSPROC_SYMLINK, 133 NFSPROC_MKDIR, 134 NFSPROC_RMDIR, 135 NFSPROC_READDIR, 136 NFSPROC_FSSTAT, 137 NFSPROC_NOOP, 138 NFSPROC_NOOP, 139 NFSPROC_NOOP, 140 NFSPROC_NOOP, 141 NFSPROC_NOOP, 142 NFSPROC_NOOP, 143 NFSPROC_NOOP, 144 NFSPROC_NOOP 145 }; 146 147 /* 148 * and the reverse mapping from generic to Version 2 procedure numbers 149 */ 150 int nfsv2_procid[NFS_NPROCS] = { 151 NFSV2PROC_NULL, 152 NFSV2PROC_GETATTR, 153 NFSV2PROC_SETATTR, 154 NFSV2PROC_LOOKUP, 155 NFSV2PROC_NOOP, 156 NFSV2PROC_READLINK, 157 NFSV2PROC_READ, 158 NFSV2PROC_WRITE, 159 NFSV2PROC_CREATE, 160 NFSV2PROC_MKDIR, 161 NFSV2PROC_SYMLINK, 162 NFSV2PROC_CREATE, 163 NFSV2PROC_REMOVE, 164 NFSV2PROC_RMDIR, 165 NFSV2PROC_RENAME, 166 NFSV2PROC_LINK, 167 NFSV2PROC_READDIR, 168 NFSV2PROC_NOOP, 169 NFSV2PROC_STATFS, 170 NFSV2PROC_NOOP, 171 NFSV2PROC_NOOP, 172 NFSV2PROC_NOOP, 173 NFSV2PROC_NOOP, 174 NFSV2PROC_NOOP, 175 NFSV2PROC_NOOP, 176 NFSV2PROC_NOOP, 177 }; 178 179 /* 180 * Maps errno values to nfs error numbers. 181 * Use NFSERR_IO as the catch all for ones not specifically defined in 182 * RFC 1094. 183 */ 184 static u_char nfsrv_v2errmap[ELAST] = { 185 NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 186 NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 187 NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 188 NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 189 NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 190 NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 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, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 194 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 195 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 196 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 197 NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 198 NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 199 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 200 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 201 NFSERR_IO, 202 }; 203 204 /* 205 * Maps errno values to nfs error numbers. 206 * Although it is not obvious whether or not NFS clients really care if 207 * a returned error value is in the specified list for the procedure, the 208 * safest thing to do is filter them appropriately. For Version 2, the 209 * X/Open XNFS document is the only specification that defines error values 210 * for each RPC (The RFC simply lists all possible error values for all RPCs), 211 * so I have decided to not do this for Version 2. 212 * The first entry is the default error return and the rest are the valid 213 * errors for that RPC in increasing numeric order. 214 */ 215 static short nfsv3err_null[] = { 216 0, 217 0, 218 }; 219 220 static short nfsv3err_getattr[] = { 221 NFSERR_IO, 222 NFSERR_IO, 223 NFSERR_STALE, 224 NFSERR_BADHANDLE, 225 NFSERR_SERVERFAULT, 226 0, 227 }; 228 229 static short nfsv3err_setattr[] = { 230 NFSERR_IO, 231 NFSERR_PERM, 232 NFSERR_IO, 233 NFSERR_ACCES, 234 NFSERR_INVAL, 235 NFSERR_NOSPC, 236 NFSERR_ROFS, 237 NFSERR_DQUOT, 238 NFSERR_STALE, 239 NFSERR_BADHANDLE, 240 NFSERR_NOT_SYNC, 241 NFSERR_SERVERFAULT, 242 0, 243 }; 244 245 static short nfsv3err_lookup[] = { 246 NFSERR_IO, 247 NFSERR_NOENT, 248 NFSERR_IO, 249 NFSERR_ACCES, 250 NFSERR_NOTDIR, 251 NFSERR_NAMETOL, 252 NFSERR_STALE, 253 NFSERR_BADHANDLE, 254 NFSERR_SERVERFAULT, 255 0, 256 }; 257 258 static short nfsv3err_access[] = { 259 NFSERR_IO, 260 NFSERR_IO, 261 NFSERR_STALE, 262 NFSERR_BADHANDLE, 263 NFSERR_SERVERFAULT, 264 0, 265 }; 266 267 static short nfsv3err_readlink[] = { 268 NFSERR_IO, 269 NFSERR_IO, 270 NFSERR_ACCES, 271 NFSERR_INVAL, 272 NFSERR_STALE, 273 NFSERR_BADHANDLE, 274 NFSERR_NOTSUPP, 275 NFSERR_SERVERFAULT, 276 0, 277 }; 278 279 static short nfsv3err_read[] = { 280 NFSERR_IO, 281 NFSERR_IO, 282 NFSERR_NXIO, 283 NFSERR_ACCES, 284 NFSERR_INVAL, 285 NFSERR_STALE, 286 NFSERR_BADHANDLE, 287 NFSERR_SERVERFAULT, 288 0, 289 }; 290 291 static short nfsv3err_write[] = { 292 NFSERR_IO, 293 NFSERR_IO, 294 NFSERR_ACCES, 295 NFSERR_INVAL, 296 NFSERR_FBIG, 297 NFSERR_NOSPC, 298 NFSERR_ROFS, 299 NFSERR_DQUOT, 300 NFSERR_STALE, 301 NFSERR_BADHANDLE, 302 NFSERR_SERVERFAULT, 303 0, 304 }; 305 306 static short nfsv3err_create[] = { 307 NFSERR_IO, 308 NFSERR_IO, 309 NFSERR_ACCES, 310 NFSERR_EXIST, 311 NFSERR_NOTDIR, 312 NFSERR_NOSPC, 313 NFSERR_ROFS, 314 NFSERR_NAMETOL, 315 NFSERR_DQUOT, 316 NFSERR_STALE, 317 NFSERR_BADHANDLE, 318 NFSERR_NOTSUPP, 319 NFSERR_SERVERFAULT, 320 0, 321 }; 322 323 static short nfsv3err_mkdir[] = { 324 NFSERR_IO, 325 NFSERR_IO, 326 NFSERR_ACCES, 327 NFSERR_EXIST, 328 NFSERR_NOTDIR, 329 NFSERR_NOSPC, 330 NFSERR_ROFS, 331 NFSERR_NAMETOL, 332 NFSERR_DQUOT, 333 NFSERR_STALE, 334 NFSERR_BADHANDLE, 335 NFSERR_NOTSUPP, 336 NFSERR_SERVERFAULT, 337 0, 338 }; 339 340 static short nfsv3err_symlink[] = { 341 NFSERR_IO, 342 NFSERR_IO, 343 NFSERR_ACCES, 344 NFSERR_EXIST, 345 NFSERR_NOTDIR, 346 NFSERR_NOSPC, 347 NFSERR_ROFS, 348 NFSERR_NAMETOL, 349 NFSERR_DQUOT, 350 NFSERR_STALE, 351 NFSERR_BADHANDLE, 352 NFSERR_NOTSUPP, 353 NFSERR_SERVERFAULT, 354 0, 355 }; 356 357 static short nfsv3err_mknod[] = { 358 NFSERR_IO, 359 NFSERR_IO, 360 NFSERR_ACCES, 361 NFSERR_EXIST, 362 NFSERR_NOTDIR, 363 NFSERR_NOSPC, 364 NFSERR_ROFS, 365 NFSERR_NAMETOL, 366 NFSERR_DQUOT, 367 NFSERR_STALE, 368 NFSERR_BADHANDLE, 369 NFSERR_NOTSUPP, 370 NFSERR_SERVERFAULT, 371 NFSERR_BADTYPE, 372 0, 373 }; 374 375 static short nfsv3err_remove[] = { 376 NFSERR_IO, 377 NFSERR_NOENT, 378 NFSERR_IO, 379 NFSERR_ACCES, 380 NFSERR_NOTDIR, 381 NFSERR_ROFS, 382 NFSERR_NAMETOL, 383 NFSERR_STALE, 384 NFSERR_BADHANDLE, 385 NFSERR_SERVERFAULT, 386 0, 387 }; 388 389 static short nfsv3err_rmdir[] = { 390 NFSERR_IO, 391 NFSERR_NOENT, 392 NFSERR_IO, 393 NFSERR_ACCES, 394 NFSERR_EXIST, 395 NFSERR_NOTDIR, 396 NFSERR_INVAL, 397 NFSERR_ROFS, 398 NFSERR_NAMETOL, 399 NFSERR_NOTEMPTY, 400 NFSERR_STALE, 401 NFSERR_BADHANDLE, 402 NFSERR_NOTSUPP, 403 NFSERR_SERVERFAULT, 404 0, 405 }; 406 407 static short nfsv3err_rename[] = { 408 NFSERR_IO, 409 NFSERR_NOENT, 410 NFSERR_IO, 411 NFSERR_ACCES, 412 NFSERR_EXIST, 413 NFSERR_XDEV, 414 NFSERR_NOTDIR, 415 NFSERR_ISDIR, 416 NFSERR_INVAL, 417 NFSERR_NOSPC, 418 NFSERR_ROFS, 419 NFSERR_MLINK, 420 NFSERR_NAMETOL, 421 NFSERR_NOTEMPTY, 422 NFSERR_DQUOT, 423 NFSERR_STALE, 424 NFSERR_BADHANDLE, 425 NFSERR_NOTSUPP, 426 NFSERR_SERVERFAULT, 427 0, 428 }; 429 430 static short nfsv3err_link[] = { 431 NFSERR_IO, 432 NFSERR_IO, 433 NFSERR_ACCES, 434 NFSERR_EXIST, 435 NFSERR_XDEV, 436 NFSERR_NOTDIR, 437 NFSERR_INVAL, 438 NFSERR_NOSPC, 439 NFSERR_ROFS, 440 NFSERR_MLINK, 441 NFSERR_NAMETOL, 442 NFSERR_DQUOT, 443 NFSERR_STALE, 444 NFSERR_BADHANDLE, 445 NFSERR_NOTSUPP, 446 NFSERR_SERVERFAULT, 447 0, 448 }; 449 450 static short nfsv3err_readdir[] = { 451 NFSERR_IO, 452 NFSERR_IO, 453 NFSERR_ACCES, 454 NFSERR_NOTDIR, 455 NFSERR_STALE, 456 NFSERR_BADHANDLE, 457 NFSERR_BAD_COOKIE, 458 NFSERR_TOOSMALL, 459 NFSERR_SERVERFAULT, 460 0, 461 }; 462 463 static short nfsv3err_readdirplus[] = { 464 NFSERR_IO, 465 NFSERR_IO, 466 NFSERR_ACCES, 467 NFSERR_NOTDIR, 468 NFSERR_STALE, 469 NFSERR_BADHANDLE, 470 NFSERR_BAD_COOKIE, 471 NFSERR_NOTSUPP, 472 NFSERR_TOOSMALL, 473 NFSERR_SERVERFAULT, 474 0, 475 }; 476 477 static short nfsv3err_fsstat[] = { 478 NFSERR_IO, 479 NFSERR_IO, 480 NFSERR_STALE, 481 NFSERR_BADHANDLE, 482 NFSERR_SERVERFAULT, 483 0, 484 }; 485 486 static short nfsv3err_fsinfo[] = { 487 NFSERR_STALE, 488 NFSERR_STALE, 489 NFSERR_BADHANDLE, 490 NFSERR_SERVERFAULT, 491 0, 492 }; 493 494 static short nfsv3err_pathconf[] = { 495 NFSERR_STALE, 496 NFSERR_STALE, 497 NFSERR_BADHANDLE, 498 NFSERR_SERVERFAULT, 499 0, 500 }; 501 502 static short nfsv3err_commit[] = { 503 NFSERR_IO, 504 NFSERR_IO, 505 NFSERR_STALE, 506 NFSERR_BADHANDLE, 507 NFSERR_SERVERFAULT, 508 0, 509 }; 510 511 static short *nfsrv_v3errmap[] = { 512 nfsv3err_null, 513 nfsv3err_getattr, 514 nfsv3err_setattr, 515 nfsv3err_lookup, 516 nfsv3err_access, 517 nfsv3err_readlink, 518 nfsv3err_read, 519 nfsv3err_write, 520 nfsv3err_create, 521 nfsv3err_mkdir, 522 nfsv3err_symlink, 523 nfsv3err_mknod, 524 nfsv3err_remove, 525 nfsv3err_rmdir, 526 nfsv3err_rename, 527 nfsv3err_link, 528 nfsv3err_readdir, 529 nfsv3err_readdirplus, 530 nfsv3err_fsstat, 531 nfsv3err_fsinfo, 532 nfsv3err_pathconf, 533 nfsv3err_commit, 534 }; 535 536 extern struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON]; 537 extern struct nfsrtt nfsrtt; 538 extern time_t nqnfsstarttime; 539 extern int nqsrv_clockskew; 540 extern int nqsrv_writeslack; 541 extern int nqsrv_maxlease; 542 extern struct nfsstats nfsstats; 543 extern int nqnfs_piggy[NFS_NPROCS]; 544 extern nfstype nfsv2_type[9]; 545 extern nfstype nfsv3_type[9]; 546 extern struct nfsnodehashhead *nfsnodehashtbl; 547 extern u_long nfsnodehash; 548 549 LIST_HEAD(nfsnodehashhead, nfsnode); 550 551 /* 552 * Create the header for an rpc request packet 553 * The hsiz is the size of the rest of the nfs request header. 554 * (just used to decide if a cluster is a good idea) 555 */ 556 struct mbuf * 557 nfsm_reqh(vp, procid, hsiz, bposp) 558 struct vnode *vp; 559 u_long procid; 560 int hsiz; 561 caddr_t *bposp; 562 { 563 register struct mbuf *mb; 564 register u_int32_t *tl; 565 register caddr_t bpos; 566 struct mbuf *mb2; 567 struct nfsmount *nmp; 568 int nqflag; 569 570 MGET(mb, M_WAIT, MT_DATA); 571 if (hsiz >= MINCLSIZE) 572 MCLGET(mb, M_WAIT); 573 mb->m_len = 0; 574 bpos = mtod(mb, caddr_t); 575 576 /* 577 * For NQNFS, add lease request. 578 */ 579 if (vp) { 580 nmp = VFSTONFS(vp->v_mount); 581 if (nmp->nm_flag & NFSMNT_NQNFS) { 582 nqflag = NQNFS_NEEDLEASE(vp, procid); 583 if (nqflag) { 584 nfsm_build(tl, u_int32_t *, 2*NFSX_UNSIGNED); 585 *tl++ = txdr_unsigned(nqflag); 586 *tl = txdr_unsigned(nmp->nm_leaseterm); 587 } else { 588 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 589 *tl = 0; 590 } 591 } 592 } 593 /* Finally, return values */ 594 *bposp = bpos; 595 return (mb); 596 } 597 598 /* 599 * Build the RPC header and fill in the authorization info. 600 * The authorization string argument is only used when the credentials 601 * come from outside of the kernel. 602 * Returns the head of the mbuf list. 603 */ 604 struct mbuf * 605 nfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 606 verf_str, mrest, mrest_len, mbp, xidp) 607 register struct ucred *cr; 608 int nmflag; 609 int procid; 610 int auth_type; 611 int auth_len; 612 char *auth_str; 613 int verf_len; 614 char *verf_str; 615 struct mbuf *mrest; 616 int mrest_len; 617 struct mbuf **mbp; 618 u_int32_t *xidp; 619 { 620 register struct mbuf *mb; 621 register u_int32_t *tl; 622 register caddr_t bpos; 623 register int i; 624 struct mbuf *mreq, *mb2; 625 int siz, grpsiz, authsiz; 626 627 authsiz = nfsm_rndup(auth_len); 628 MGETHDR(mb, M_WAIT, MT_DATA); 629 if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 630 MCLGET(mb, M_WAIT); 631 } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 632 MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 633 } else { 634 MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 635 } 636 mb->m_len = 0; 637 mreq = mb; 638 bpos = mtod(mb, caddr_t); 639 640 /* 641 * First the RPC header. 642 */ 643 nfsm_build(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 644 645 /* Get a new (non-zero) xid */ 646 647 if ((nfs_xid == 0) && (nfs_xid_touched == 0)) { 648 nfs_xid = arc4random(); 649 nfs_xid_touched = 1; 650 } else { 651 while ((*xidp = arc4random() % 256) == 0) 652 ; 653 nfs_xid += *xidp; 654 } 655 656 *tl++ = *xidp = txdr_unsigned(nfs_xid); 657 *tl++ = rpc_call; 658 *tl++ = rpc_vers; 659 if (nmflag & NFSMNT_NQNFS) { 660 *tl++ = txdr_unsigned(NQNFS_PROG); 661 *tl++ = txdr_unsigned(NQNFS_VER3); 662 } else { 663 *tl++ = txdr_unsigned(NFS_PROG); 664 if (nmflag & NFSMNT_NFSV3) 665 *tl++ = txdr_unsigned(NFS_VER3); 666 else 667 *tl++ = txdr_unsigned(NFS_VER2); 668 } 669 if (nmflag & NFSMNT_NFSV3) 670 *tl++ = txdr_unsigned(procid); 671 else 672 *tl++ = txdr_unsigned(nfsv2_procid[procid]); 673 674 /* 675 * And then the authorization cred. 676 */ 677 *tl++ = txdr_unsigned(auth_type); 678 *tl = txdr_unsigned(authsiz); 679 switch (auth_type) { 680 case RPCAUTH_UNIX: 681 nfsm_build(tl, u_int32_t *, auth_len); 682 *tl++ = 0; /* stamp ?? */ 683 *tl++ = 0; /* NULL hostname */ 684 *tl++ = txdr_unsigned(cr->cr_uid); 685 *tl++ = txdr_unsigned(cr->cr_gid); 686 grpsiz = (auth_len >> 2) - 5; 687 *tl++ = txdr_unsigned(grpsiz); 688 for (i = 0; i < grpsiz; i++) 689 *tl++ = txdr_unsigned(cr->cr_groups[i]); 690 break; 691 case RPCAUTH_KERB4: 692 siz = auth_len; 693 while (siz > 0) { 694 if (M_TRAILINGSPACE(mb) == 0) { 695 MGET(mb2, M_WAIT, MT_DATA); 696 if (siz >= MINCLSIZE) 697 MCLGET(mb2, M_WAIT); 698 mb->m_next = mb2; 699 mb = mb2; 700 mb->m_len = 0; 701 bpos = mtod(mb, caddr_t); 702 } 703 i = min(siz, M_TRAILINGSPACE(mb)); 704 bcopy(auth_str, bpos, i); 705 mb->m_len += i; 706 auth_str += i; 707 bpos += i; 708 siz -= i; 709 } 710 if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 711 for (i = 0; i < siz; i++) 712 *bpos++ = '\0'; 713 mb->m_len += siz; 714 } 715 break; 716 }; 717 718 /* 719 * And the verifier... 720 */ 721 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 722 if (verf_str) { 723 *tl++ = txdr_unsigned(RPCAUTH_KERB4); 724 *tl = txdr_unsigned(verf_len); 725 siz = verf_len; 726 while (siz > 0) { 727 if (M_TRAILINGSPACE(mb) == 0) { 728 MGET(mb2, M_WAIT, MT_DATA); 729 if (siz >= MINCLSIZE) 730 MCLGET(mb2, M_WAIT); 731 mb->m_next = mb2; 732 mb = mb2; 733 mb->m_len = 0; 734 bpos = mtod(mb, caddr_t); 735 } 736 i = min(siz, M_TRAILINGSPACE(mb)); 737 bcopy(verf_str, bpos, i); 738 mb->m_len += i; 739 verf_str += i; 740 bpos += i; 741 siz -= i; 742 } 743 if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 744 for (i = 0; i < siz; i++) 745 *bpos++ = '\0'; 746 mb->m_len += siz; 747 } 748 } else { 749 *tl++ = txdr_unsigned(RPCAUTH_NULL); 750 *tl = 0; 751 } 752 mb->m_next = mrest; 753 mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 754 mreq->m_pkthdr.rcvif = (struct ifnet *)0; 755 *mbp = mb; 756 return (mreq); 757 } 758 759 /* 760 * copies mbuf chain to the uio scatter/gather list 761 */ 762 int 763 nfsm_mbuftouio(mrep, uiop, siz, dpos) 764 struct mbuf **mrep; 765 register struct uio *uiop; 766 int siz; 767 caddr_t *dpos; 768 { 769 register char *mbufcp, *uiocp; 770 register int xfer, left, len; 771 register struct mbuf *mp; 772 long uiosiz, rem; 773 int error = 0; 774 775 mp = *mrep; 776 mbufcp = *dpos; 777 len = mtod(mp, caddr_t)+mp->m_len-mbufcp; 778 rem = nfsm_rndup(siz)-siz; 779 while (siz > 0) { 780 if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 781 return (EFBIG); 782 left = uiop->uio_iov->iov_len; 783 uiocp = uiop->uio_iov->iov_base; 784 if (left > siz) 785 left = siz; 786 uiosiz = left; 787 while (left > 0) { 788 while (len == 0) { 789 mp = mp->m_next; 790 if (mp == NULL) 791 return (EBADRPC); 792 mbufcp = mtod(mp, caddr_t); 793 len = mp->m_len; 794 } 795 xfer = (left > len) ? len : left; 796 #ifdef notdef 797 /* Not Yet.. */ 798 if (uiop->uio_iov->iov_op != NULL) 799 (*(uiop->uio_iov->iov_op)) 800 (mbufcp, uiocp, xfer); 801 else 802 #endif 803 if (uiop->uio_segflg == UIO_SYSSPACE) 804 bcopy(mbufcp, uiocp, xfer); 805 else 806 copyout(mbufcp, uiocp, xfer); 807 left -= xfer; 808 len -= xfer; 809 mbufcp += xfer; 810 uiocp += xfer; 811 uiop->uio_offset += xfer; 812 uiop->uio_resid -= xfer; 813 } 814 if (uiop->uio_iov->iov_len <= siz) { 815 uiop->uio_iovcnt--; 816 uiop->uio_iov++; 817 } else { 818 uiop->uio_iov->iov_base += uiosiz; 819 uiop->uio_iov->iov_len -= uiosiz; 820 } 821 siz -= uiosiz; 822 } 823 *dpos = mbufcp; 824 *mrep = mp; 825 if (rem > 0) { 826 if (len < rem) 827 error = nfs_adv(mrep, dpos, rem, len); 828 else 829 *dpos += rem; 830 } 831 return (error); 832 } 833 834 /* 835 * copies a uio scatter/gather list to an mbuf chain. 836 * NOTE: can ony handle iovcnt == 1 837 */ 838 int 839 nfsm_uiotombuf(uiop, mq, siz, bpos) 840 register struct uio *uiop; 841 struct mbuf **mq; 842 int siz; 843 caddr_t *bpos; 844 { 845 register char *uiocp; 846 register struct mbuf *mp, *mp2; 847 register int xfer, left, mlen; 848 int uiosiz, clflg, rem; 849 char *cp; 850 851 #ifdef DIAGNOSTIC 852 if (uiop->uio_iovcnt != 1) 853 panic("nfsm_uiotombuf: iovcnt != 1"); 854 #endif 855 856 if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 857 clflg = 1; 858 else 859 clflg = 0; 860 rem = nfsm_rndup(siz)-siz; 861 mp = mp2 = *mq; 862 while (siz > 0) { 863 left = uiop->uio_iov->iov_len; 864 uiocp = uiop->uio_iov->iov_base; 865 if (left > siz) 866 left = siz; 867 uiosiz = left; 868 while (left > 0) { 869 mlen = M_TRAILINGSPACE(mp); 870 if (mlen == 0) { 871 MGET(mp, M_WAIT, MT_DATA); 872 if (clflg) 873 MCLGET(mp, M_WAIT); 874 mp->m_len = 0; 875 mp2->m_next = mp; 876 mp2 = mp; 877 mlen = M_TRAILINGSPACE(mp); 878 } 879 xfer = (left > mlen) ? mlen : left; 880 #ifdef notdef 881 /* Not Yet.. */ 882 if (uiop->uio_iov->iov_op != NULL) 883 (*(uiop->uio_iov->iov_op)) 884 (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 885 else 886 #endif 887 if (uiop->uio_segflg == UIO_SYSSPACE) 888 bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 889 else 890 copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 891 mp->m_len += xfer; 892 left -= xfer; 893 uiocp += xfer; 894 uiop->uio_offset += xfer; 895 uiop->uio_resid -= xfer; 896 } 897 uiop->uio_iov->iov_base += uiosiz; 898 uiop->uio_iov->iov_len -= uiosiz; 899 siz -= uiosiz; 900 } 901 if (rem > 0) { 902 if (rem > M_TRAILINGSPACE(mp)) { 903 MGET(mp, M_WAIT, MT_DATA); 904 mp->m_len = 0; 905 mp2->m_next = mp; 906 } 907 cp = mtod(mp, caddr_t)+mp->m_len; 908 for (left = 0; left < rem; left++) 909 *cp++ = '\0'; 910 mp->m_len += rem; 911 *bpos = cp; 912 } else 913 *bpos = mtod(mp, caddr_t)+mp->m_len; 914 *mq = mp; 915 return (0); 916 } 917 918 /* 919 * Help break down an mbuf chain by setting the first siz bytes contiguous 920 * pointed to by returned val. 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 *mp, *mp2; 933 register int siz2, xfer; 934 register caddr_t p; 935 936 mp = *mdp; 937 while (left == 0) { 938 *mdp = mp = mp->m_next; 939 if (mp == NULL) 940 return (EBADRPC); 941 left = mp->m_len; 942 *dposp = mtod(mp, caddr_t); 943 } 944 if (left >= siz) { 945 *cp2 = *dposp; 946 *dposp += siz; 947 } else if (mp->m_next == NULL) { 948 return (EBADRPC); 949 } else if (siz > MHLEN) { 950 panic("nfs S too big"); 951 } else { 952 MGET(mp2, M_WAIT, MT_DATA); 953 mp2->m_next = mp->m_next; 954 mp->m_next = mp2; 955 mp->m_len -= left; 956 mp = mp2; 957 *cp2 = p = mtod(mp, caddr_t); 958 bcopy(*dposp, p, left); /* Copy what was left */ 959 siz2 = siz-left; 960 p += left; 961 mp2 = mp->m_next; 962 /* Loop around copying up the siz2 bytes */ 963 while (siz2 > 0) { 964 if (mp2 == NULL) 965 return (EBADRPC); 966 xfer = (siz2 > mp2->m_len) ? mp2->m_len : siz2; 967 if (xfer > 0) { 968 bcopy(mtod(mp2, caddr_t), p, xfer); 969 NFSMADV(mp2, xfer); 970 mp2->m_len -= xfer; 971 p += xfer; 972 siz2 -= xfer; 973 } 974 if (siz2 > 0) 975 mp2 = mp2->m_next; 976 } 977 mp->m_len = siz; 978 *mdp = mp2; 979 *dposp = mtod(mp2, caddr_t); 980 } 981 return (0); 982 } 983 984 /* 985 * Advance the position in the mbuf chain. 986 */ 987 int 988 nfs_adv(mdp, dposp, offs, left) 989 struct mbuf **mdp; 990 caddr_t *dposp; 991 int offs; 992 int left; 993 { 994 register struct mbuf *m; 995 register int s; 996 997 m = *mdp; 998 s = left; 999 while (s < offs) { 1000 offs -= s; 1001 m = m->m_next; 1002 if (m == NULL) 1003 return (EBADRPC); 1004 s = m->m_len; 1005 } 1006 *mdp = m; 1007 *dposp = mtod(m, caddr_t)+offs; 1008 return (0); 1009 } 1010 1011 /* 1012 * Copy a string into mbufs for the hard cases... 1013 */ 1014 int 1015 nfsm_strtmbuf(mb, bpos, cp, siz) 1016 struct mbuf **mb; 1017 char **bpos; 1018 char *cp; 1019 long siz; 1020 { 1021 register struct mbuf *m1 = NULL, *m2; 1022 long left, xfer, len, tlen; 1023 u_int32_t *tl; 1024 int putsize; 1025 1026 putsize = 1; 1027 m2 = *mb; 1028 left = M_TRAILINGSPACE(m2); 1029 if (left > 0) { 1030 tl = ((u_int32_t *)(*bpos)); 1031 *tl++ = txdr_unsigned(siz); 1032 putsize = 0; 1033 left -= NFSX_UNSIGNED; 1034 m2->m_len += NFSX_UNSIGNED; 1035 if (left > 0) { 1036 bcopy(cp, (caddr_t) tl, left); 1037 siz -= left; 1038 cp += left; 1039 m2->m_len += left; 1040 left = 0; 1041 } 1042 } 1043 /* Loop around adding mbufs */ 1044 while (siz > 0) { 1045 MGET(m1, M_WAIT, MT_DATA); 1046 if (siz > MLEN) 1047 MCLGET(m1, M_WAIT); 1048 m1->m_len = NFSMSIZ(m1); 1049 m2->m_next = m1; 1050 m2 = m1; 1051 tl = mtod(m1, u_int32_t *); 1052 tlen = 0; 1053 if (putsize) { 1054 *tl++ = txdr_unsigned(siz); 1055 m1->m_len -= NFSX_UNSIGNED; 1056 tlen = NFSX_UNSIGNED; 1057 putsize = 0; 1058 } 1059 if (siz < m1->m_len) { 1060 len = nfsm_rndup(siz); 1061 xfer = siz; 1062 if (xfer < len) 1063 *(tl+(xfer>>2)) = 0; 1064 } else { 1065 xfer = len = m1->m_len; 1066 } 1067 bcopy(cp, (caddr_t) tl, xfer); 1068 m1->m_len = len+tlen; 1069 siz -= xfer; 1070 cp += xfer; 1071 } 1072 *mb = m1; 1073 *bpos = mtod(m1, caddr_t)+m1->m_len; 1074 return (0); 1075 } 1076 1077 /* 1078 * Called once to initialize data structures... 1079 */ 1080 void 1081 nfs_init() 1082 { 1083 static struct timeout nfs_timer_to; 1084 1085 #if !defined(alpha) && defined(DIAGNOSTIC) 1086 /* 1087 * Check to see if major data structures haven't bloated. 1088 */ 1089 if (sizeof (struct nfsnode) > NFS_NODEALLOC) { 1090 printf("struct nfsnode bloated (> %dbytes)\n", NFS_NODEALLOC); 1091 printf("Try reducing NFS_SMALLFH\n"); 1092 } 1093 if (sizeof (struct nfsmount) > NFS_MNTALLOC) { 1094 printf("struct nfsmount bloated (> %dbytes)\n", NFS_MNTALLOC); 1095 printf("Try reducing NFS_MUIDHASHSIZ\n"); 1096 } 1097 if (sizeof (struct nfssvc_sock) > NFS_SVCALLOC) { 1098 printf("struct nfssvc_sock bloated (> %dbytes)\n",NFS_SVCALLOC); 1099 printf("Try reducing NFS_UIDHASHSIZ\n"); 1100 } 1101 if (sizeof (struct nfsuid) > NFS_UIDALLOC) { 1102 printf("struct nfsuid bloated (> %dbytes)\n",NFS_UIDALLOC); 1103 printf("Try unionizing the nu_nickname and nu_flag fields\n"); 1104 } 1105 #endif 1106 1107 nfsrtt.pos = 0; 1108 rpc_vers = txdr_unsigned(RPC_VER2); 1109 rpc_call = txdr_unsigned(RPC_CALL); 1110 rpc_reply = txdr_unsigned(RPC_REPLY); 1111 rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 1112 rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 1113 rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 1114 rpc_autherr = txdr_unsigned(RPC_AUTHERR); 1115 rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 1116 rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 1117 nfs_prog = txdr_unsigned(NFS_PROG); 1118 nqnfs_prog = txdr_unsigned(NQNFS_PROG); 1119 nfs_true = txdr_unsigned(TRUE); 1120 nfs_false = txdr_unsigned(FALSE); 1121 nfs_xdrneg1 = txdr_unsigned(-1); 1122 nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 1123 if (nfs_ticks < 1) 1124 nfs_ticks = 1; 1125 #ifdef NFSSERVER 1126 nfsrv_init(0); /* Init server data structures */ 1127 nfsrv_initcache(); /* Init the server request cache */ 1128 #endif /* NFSSERVER */ 1129 1130 /* 1131 * Initialize the nqnfs client/server stuff. 1132 */ 1133 if (nqnfsstarttime == 0) { 1134 nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease 1135 + nqsrv_clockskew + nqsrv_writeslack; 1136 NQLOADNOVRAM(nqnfsstarttime); 1137 CIRCLEQ_INIT(&nqtimerhead); 1138 nqfhhashtbl = hashinit(NQLCHSZ, M_NQLEASE, M_WAITOK, &nqfhhash); 1139 } 1140 1141 /* 1142 * Initialize reply list and start timer 1143 */ 1144 TAILQ_INIT(&nfs_reqq); 1145 1146 timeout_set(&nfs_timer_to, nfs_timer, &nfs_timer_to); 1147 nfs_timer(&nfs_timer_to); 1148 } 1149 1150 #ifdef NFSCLIENT 1151 int 1152 nfs_vfs_init(vfsp) 1153 struct vfsconf *vfsp; 1154 { 1155 register int i; 1156 1157 /* Ensure async daemons disabled */ 1158 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 1159 nfs_iodwant[i] = (struct proc *)0; 1160 TAILQ_INIT(&nfs_bufq); 1161 nfs_nhinit(); /* Init the nfsnode table */ 1162 1163 return (0); 1164 } 1165 1166 /* 1167 * Attribute cache routines. 1168 * nfs_loadattrcache() - loads or updates the cache contents from attributes 1169 * that are on the mbuf list 1170 * nfs_getattrcache() - returns valid attributes if found in cache, returns 1171 * error otherwise 1172 */ 1173 1174 /* 1175 * Load the attribute cache (that lives in the nfsnode entry) with 1176 * the values on the mbuf list and 1177 * Iff vap not NULL 1178 * copy the attributes to *vaper 1179 */ 1180 int 1181 nfs_loadattrcache(vpp, mdp, dposp, vaper) 1182 struct vnode **vpp; 1183 struct mbuf **mdp; 1184 caddr_t *dposp; 1185 struct vattr *vaper; 1186 { 1187 register struct vnode *vp = *vpp; 1188 register struct vattr *vap; 1189 register struct nfs_fattr *fp; 1190 extern int (**spec_nfsv2nodeop_p) __P((void *)); 1191 register struct nfsnode *np; 1192 register int32_t t1; 1193 caddr_t cp2; 1194 int error = 0; 1195 int32_t rdev; 1196 struct mbuf *md; 1197 enum vtype vtyp; 1198 u_short vmode; 1199 struct timespec mtime; 1200 struct vnode *nvp; 1201 int v3 = NFS_ISV3(vp); 1202 1203 md = *mdp; 1204 t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 1205 error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2); 1206 if (error) 1207 return (error); 1208 fp = (struct nfs_fattr *)cp2; 1209 if (v3) { 1210 vtyp = nfsv3tov_type(fp->fa_type); 1211 vmode = fxdr_unsigned(u_short, fp->fa_mode); 1212 rdev = makedev(fxdr_unsigned(u_char, fp->fa3_rdev.specdata1), 1213 fxdr_unsigned(u_char, fp->fa3_rdev.specdata2)); 1214 fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 1215 } else { 1216 vtyp = nfsv2tov_type(fp->fa_type); 1217 vmode = fxdr_unsigned(u_short, fp->fa_mode); 1218 if (vtyp == VNON || vtyp == VREG) 1219 vtyp = IFTOVT(vmode); 1220 rdev = fxdr_unsigned(int32_t, fp->fa2_rdev); 1221 fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 1222 1223 /* 1224 * Really ugly NFSv2 kludge. 1225 */ 1226 if (vtyp == VCHR && rdev == 0xffffffff) 1227 vtyp = VFIFO; 1228 } 1229 1230 /* 1231 * If v_type == VNON it is a new node, so fill in the v_type, 1232 * n_mtime fields. Check to see if it represents a special 1233 * device, and if so, check for a possible alias. Once the 1234 * correct vnode has been obtained, fill in the rest of the 1235 * information. 1236 */ 1237 np = VTONFS(vp); 1238 if (vp->v_type != vtyp) { 1239 vp->v_type = vtyp; 1240 if (vp->v_type == VFIFO) { 1241 #ifndef FIFO 1242 return (EOPNOTSUPP); 1243 #else 1244 extern int (**fifo_nfsv2nodeop_p) __P((void *)); 1245 vp->v_op = fifo_nfsv2nodeop_p; 1246 #endif /* FIFO */ 1247 } 1248 if (vp->v_type == VCHR || vp->v_type == VBLK) { 1249 vp->v_op = spec_nfsv2nodeop_p; 1250 nvp = checkalias(vp, (dev_t)rdev, vp->v_mount); 1251 if (nvp) { 1252 /* 1253 * Discard unneeded vnode, but save its nfsnode. 1254 * Since the nfsnode does not have a lock, its 1255 * vnode lock has to be carried over. 1256 */ 1257 1258 nvp->v_vnlock = vp->v_vnlock; 1259 vp->v_vnlock = NULL; 1260 nvp->v_data = vp->v_data; 1261 vp->v_data = NULL; 1262 vp->v_op = spec_vnodeop_p; 1263 vrele(vp); 1264 vgone(vp); 1265 /* 1266 * Reinitialize aliased node. 1267 */ 1268 np->n_vnode = nvp; 1269 *vpp = vp = nvp; 1270 } 1271 } 1272 np->n_mtime = mtime.tv_sec; 1273 } 1274 vap = &np->n_vattr; 1275 vap->va_type = vtyp; 1276 vap->va_mode = (vmode & 07777); 1277 vap->va_rdev = (dev_t)rdev; 1278 vap->va_mtime = mtime; 1279 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 1280 if (v3) { 1281 vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1282 vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 1283 vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 1284 vap->va_size = fxdr_hyper(&fp->fa3_size); 1285 vap->va_blocksize = NFS_FABLKSIZE; 1286 vap->va_bytes = fxdr_hyper(&fp->fa3_used); 1287 vap->va_fileid = fxdr_unsigned(int32_t, 1288 fp->fa3_fileid.nfsuquad[1]); 1289 fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 1290 fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime); 1291 vap->va_flags = 0; 1292 vap->va_filerev = 0; 1293 } else { 1294 vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1295 vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 1296 vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 1297 vap->va_size = fxdr_unsigned(u_int32_t, fp->fa2_size); 1298 vap->va_blocksize = fxdr_unsigned(int32_t, fp->fa2_blocksize); 1299 vap->va_bytes = 1300 (u_quad_t)fxdr_unsigned(int32_t, fp->fa2_blocks) * 1301 NFS_FABLKSIZE; 1302 vap->va_fileid = fxdr_unsigned(int32_t, fp->fa2_fileid); 1303 fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 1304 vap->va_flags = 0; 1305 vap->va_ctime.tv_sec = fxdr_unsigned(u_int32_t, 1306 fp->fa2_ctime.nfsv2_sec); 1307 vap->va_ctime.tv_nsec = 0; 1308 vap->va_gen = fxdr_unsigned(u_int32_t,fp->fa2_ctime.nfsv2_usec); 1309 vap->va_filerev = 0; 1310 } 1311 if (vap->va_size != np->n_size) { 1312 if (vap->va_type == VREG) { 1313 if (np->n_flag & NMODIFIED) { 1314 if (vap->va_size < np->n_size) 1315 vap->va_size = np->n_size; 1316 else 1317 np->n_size = vap->va_size; 1318 } else 1319 np->n_size = vap->va_size; 1320 #if defined(UVM) 1321 uvm_vnp_setsize(vp, np->n_size); 1322 #else 1323 vnode_pager_setsize(vp, (u_long)np->n_size); 1324 #endif 1325 } else 1326 np->n_size = vap->va_size; 1327 } 1328 np->n_attrstamp = time.tv_sec; 1329 if (vaper != NULL) { 1330 bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 1331 if (np->n_flag & NCHG) { 1332 if (np->n_flag & NACC) 1333 vaper->va_atime = np->n_atim; 1334 if (np->n_flag & NUPD) 1335 vaper->va_mtime = np->n_mtim; 1336 } 1337 } 1338 return (0); 1339 } 1340 1341 INLINE int 1342 nfs_attrtimeo (np) 1343 struct nfsnode *np; 1344 { 1345 struct vnode *vp = np->n_vnode; 1346 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1347 int tenthage = (time.tv_sec - np->n_mtime) / 10; 1348 int minto, maxto; 1349 1350 if (vp->v_type == VDIR) { 1351 maxto = nmp->nm_acdirmax; 1352 minto = nmp->nm_acdirmin; 1353 } 1354 else { 1355 maxto = nmp->nm_acregmax; 1356 minto = nmp->nm_acregmin; 1357 } 1358 1359 if (np->n_flag & NMODIFIED || tenthage < minto) 1360 return minto; 1361 else if (tenthage < maxto) 1362 return tenthage; 1363 else 1364 return maxto; 1365 } 1366 1367 /* 1368 * Check the time stamp 1369 * If the cache is valid, copy contents to *vap and return 0 1370 * otherwise return an error 1371 */ 1372 int 1373 nfs_getattrcache(vp, vaper) 1374 register struct vnode *vp; 1375 struct vattr *vaper; 1376 { 1377 register struct nfsnode *np = VTONFS(vp); 1378 register struct vattr *vap; 1379 1380 if ((time.tv_sec - np->n_attrstamp) >= nfs_attrtimeo(np)) { 1381 nfsstats.attrcache_misses++; 1382 return (ENOENT); 1383 } 1384 nfsstats.attrcache_hits++; 1385 vap = &np->n_vattr; 1386 if (vap->va_size != np->n_size) { 1387 if (vap->va_type == VREG) { 1388 if (np->n_flag & NMODIFIED) { 1389 if (vap->va_size < np->n_size) 1390 vap->va_size = np->n_size; 1391 else 1392 np->n_size = vap->va_size; 1393 } else 1394 np->n_size = vap->va_size; 1395 #if defined(UVM) 1396 uvm_vnp_setsize(vp, np->n_size); 1397 #else 1398 vnode_pager_setsize(vp, (u_long)np->n_size); 1399 #endif 1400 } else 1401 np->n_size = vap->va_size; 1402 } 1403 bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr)); 1404 if (np->n_flag & NCHG) { 1405 if (np->n_flag & NACC) 1406 vaper->va_atime = np->n_atim; 1407 if (np->n_flag & NUPD) 1408 vaper->va_mtime = np->n_mtim; 1409 } 1410 return (0); 1411 } 1412 #endif /* NFSCLIENT */ 1413 1414 /* 1415 * Set up nameidata for a lookup() call and do it 1416 */ 1417 int 1418 nfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag) 1419 register struct nameidata *ndp; 1420 fhandle_t *fhp; 1421 int len; 1422 struct nfssvc_sock *slp; 1423 struct mbuf *nam; 1424 struct mbuf **mdp; 1425 caddr_t *dposp; 1426 struct vnode **retdirp; 1427 struct proc *p; 1428 int kerbflag; 1429 { 1430 register int i, rem; 1431 register struct mbuf *md; 1432 register char *fromcp, *tocp; 1433 struct vnode *dp; 1434 int error, rdonly; 1435 struct componentname *cnp = &ndp->ni_cnd; 1436 1437 *retdirp = (struct vnode *)0; 1438 MALLOC(cnp->cn_pnbuf, char *, len + 1, M_NAMEI, M_WAITOK); 1439 /* 1440 * Copy the name from the mbuf list to ndp->ni_pnbuf 1441 * and set the various ndp fields appropriately. 1442 */ 1443 fromcp = *dposp; 1444 tocp = cnp->cn_pnbuf; 1445 md = *mdp; 1446 rem = mtod(md, caddr_t) + md->m_len - fromcp; 1447 cnp->cn_hash = 0; 1448 for (i = 0; i < len; i++) { 1449 while (rem == 0) { 1450 md = md->m_next; 1451 if (md == NULL) { 1452 error = EBADRPC; 1453 goto out; 1454 } 1455 fromcp = mtod(md, caddr_t); 1456 rem = md->m_len; 1457 } 1458 if (*fromcp == '\0' || *fromcp == '/') { 1459 error = EACCES; 1460 goto out; 1461 } 1462 cnp->cn_hash += (u_char)*fromcp; 1463 *tocp++ = *fromcp++; 1464 rem--; 1465 } 1466 *tocp = '\0'; 1467 *mdp = md; 1468 *dposp = fromcp; 1469 len = nfsm_rndup(len)-len; 1470 if (len > 0) { 1471 if (rem >= len) 1472 *dposp += len; 1473 else if ((error = nfs_adv(mdp, dposp, len, rem)) != 0) 1474 goto out; 1475 } 1476 ndp->ni_pathlen = tocp - cnp->cn_pnbuf; 1477 cnp->cn_nameptr = cnp->cn_pnbuf; 1478 /* 1479 * Extract and set starting directory. 1480 */ 1481 error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp, 1482 nam, &rdonly, kerbflag); 1483 if (error) 1484 goto out; 1485 if (dp->v_type != VDIR) { 1486 vrele(dp); 1487 error = ENOTDIR; 1488 goto out; 1489 } 1490 VREF(dp); 1491 *retdirp = dp; 1492 ndp->ni_startdir = dp; 1493 if (rdonly) 1494 cnp->cn_flags |= (NOCROSSMOUNT | RDONLY); 1495 else 1496 cnp->cn_flags |= NOCROSSMOUNT; 1497 /* 1498 * And call lookup() to do the real work 1499 */ 1500 cnp->cn_proc = p; 1501 error = lookup(ndp); 1502 if (error) 1503 goto out; 1504 /* 1505 * Check for encountering a symbolic link 1506 */ 1507 if (cnp->cn_flags & ISSYMLINK) { 1508 if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 1509 vput(ndp->ni_dvp); 1510 else 1511 vrele(ndp->ni_dvp); 1512 vput(ndp->ni_vp); 1513 ndp->ni_vp = NULL; 1514 error = EINVAL; 1515 goto out; 1516 } 1517 /* 1518 * Check for saved name request 1519 */ 1520 if (cnp->cn_flags & (SAVENAME | SAVESTART)) { 1521 cnp->cn_flags |= HASBUF; 1522 return (0); 1523 } 1524 out: 1525 FREE(cnp->cn_pnbuf, M_NAMEI); 1526 return (error); 1527 } 1528 1529 /* 1530 * A fiddled version of m_adj() that ensures null fill to a long 1531 * boundary and only trims off the back end 1532 */ 1533 void 1534 nfsm_adj(mp, len, nul) 1535 struct mbuf *mp; 1536 register int len; 1537 int nul; 1538 { 1539 register struct mbuf *m; 1540 register int count, i; 1541 register char *cp; 1542 1543 /* 1544 * Trim from tail. Scan the mbuf chain, 1545 * calculating its length and finding the last mbuf. 1546 * If the adjustment only affects this mbuf, then just 1547 * adjust and return. Otherwise, rescan and truncate 1548 * after the remaining size. 1549 */ 1550 count = 0; 1551 m = mp; 1552 for (;;) { 1553 count += m->m_len; 1554 if (m->m_next == (struct mbuf *)0) 1555 break; 1556 m = m->m_next; 1557 } 1558 if (m->m_len > len) { 1559 m->m_len -= len; 1560 if (nul > 0) { 1561 cp = mtod(m, caddr_t)+m->m_len-nul; 1562 for (i = 0; i < nul; i++) 1563 *cp++ = '\0'; 1564 } 1565 return; 1566 } 1567 count -= len; 1568 if (count < 0) 1569 count = 0; 1570 /* 1571 * Correct length for chain is "count". 1572 * Find the mbuf with last data, adjust its length, 1573 * and toss data from remaining mbufs on chain. 1574 */ 1575 for (m = mp; m; m = m->m_next) { 1576 if (m->m_len >= count) { 1577 m->m_len = count; 1578 if (nul > 0) { 1579 cp = mtod(m, caddr_t)+m->m_len-nul; 1580 for (i = 0; i < nul; i++) 1581 *cp++ = '\0'; 1582 } 1583 break; 1584 } 1585 count -= m->m_len; 1586 } 1587 for (m = m->m_next;m;m = m->m_next) 1588 m->m_len = 0; 1589 } 1590 1591 /* 1592 * Make these functions instead of macros, so that the kernel text size 1593 * doesn't get too big... 1594 */ 1595 void 1596 nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 1597 struct nfsrv_descript *nfsd; 1598 int before_ret; 1599 register struct vattr *before_vap; 1600 int after_ret; 1601 struct vattr *after_vap; 1602 struct mbuf **mbp; 1603 char **bposp; 1604 { 1605 register struct mbuf *mb = *mbp, *mb2; 1606 register char *bpos = *bposp; 1607 register u_int32_t *tl; 1608 1609 if (before_ret) { 1610 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 1611 *tl = nfs_false; 1612 } else { 1613 nfsm_build(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 1614 *tl++ = nfs_true; 1615 txdr_hyper(before_vap->va_size, tl); 1616 tl += 2; 1617 txdr_nfsv3time(&(before_vap->va_mtime), tl); 1618 tl += 2; 1619 txdr_nfsv3time(&(before_vap->va_ctime), tl); 1620 } 1621 *bposp = bpos; 1622 *mbp = mb; 1623 nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 1624 } 1625 1626 void 1627 nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 1628 struct nfsrv_descript *nfsd; 1629 int after_ret; 1630 struct vattr *after_vap; 1631 struct mbuf **mbp; 1632 char **bposp; 1633 { 1634 register struct mbuf *mb = *mbp, *mb2; 1635 register char *bpos = *bposp; 1636 register u_int32_t *tl; 1637 register struct nfs_fattr *fp; 1638 1639 if (after_ret) { 1640 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 1641 *tl = nfs_false; 1642 } else { 1643 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_V3FATTR); 1644 *tl++ = nfs_true; 1645 fp = (struct nfs_fattr *)tl; 1646 nfsm_srvfattr(nfsd, after_vap, fp); 1647 } 1648 *mbp = mb; 1649 *bposp = bpos; 1650 } 1651 1652 void 1653 nfsm_srvfattr(nfsd, vap, fp) 1654 register struct nfsrv_descript *nfsd; 1655 register struct vattr *vap; 1656 register struct nfs_fattr *fp; 1657 { 1658 1659 fp->fa_nlink = txdr_unsigned(vap->va_nlink); 1660 fp->fa_uid = txdr_unsigned(vap->va_uid); 1661 fp->fa_gid = txdr_unsigned(vap->va_gid); 1662 if (nfsd->nd_flag & ND_NFSV3) { 1663 fp->fa_type = vtonfsv3_type(vap->va_type); 1664 fp->fa_mode = vtonfsv3_mode(vap->va_mode); 1665 txdr_hyper(vap->va_size, &fp->fa3_size); 1666 txdr_hyper(vap->va_bytes, &fp->fa3_used); 1667 fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 1668 fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 1669 fp->fa3_fsid.nfsuquad[0] = 0; 1670 fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 1671 fp->fa3_fileid.nfsuquad[0] = 0; 1672 fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid); 1673 txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 1674 txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 1675 txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 1676 } else { 1677 fp->fa_type = vtonfsv2_type(vap->va_type); 1678 fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 1679 fp->fa2_size = txdr_unsigned(vap->va_size); 1680 fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 1681 if (vap->va_type == VFIFO) 1682 fp->fa2_rdev = 0xffffffff; 1683 else 1684 fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 1685 fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 1686 fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 1687 fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 1688 txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 1689 txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 1690 txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 1691 } 1692 } 1693 1694 /* 1695 * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 1696 * - look up fsid in mount list (if not found ret error) 1697 * - get vp and export rights by calling VFS_FHTOVP() and VFS_CHECKEXP() 1698 * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 1699 * - if not lockflag unlock it with VOP_UNLOCK() 1700 */ 1701 int 1702 nfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag) 1703 fhandle_t *fhp; 1704 int lockflag; 1705 struct vnode **vpp; 1706 struct ucred *cred; 1707 struct nfssvc_sock *slp; 1708 struct mbuf *nam; 1709 int *rdonlyp; 1710 int kerbflag; 1711 { 1712 struct proc *p = curproc; /* XXX */ 1713 register struct mount *mp; 1714 register int i; 1715 struct ucred *credanon; 1716 int error, exflags; 1717 struct sockaddr_in *saddr; 1718 1719 *vpp = (struct vnode *)0; 1720 mp = vfs_getvfs(&fhp->fh_fsid); 1721 1722 if (!mp) 1723 return (ESTALE); 1724 error = VFS_CHECKEXP(mp, nam, &exflags, &credanon); 1725 if (error) 1726 return (error); 1727 error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp); 1728 if (error) 1729 return (error); 1730 1731 saddr = mtod(nam, struct sockaddr_in *); 1732 if (saddr->sin_family == AF_INET && 1733 (ntohs(saddr->sin_port) >= IPPORT_RESERVED || 1734 (slp->ns_so->so_type == SOCK_STREAM && ntohs(saddr->sin_port) == 20))) { 1735 vput(*vpp); 1736 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 1737 } 1738 1739 /* 1740 * Check/setup credentials. 1741 */ 1742 if (exflags & MNT_EXKERB) { 1743 if (!kerbflag) { 1744 vput(*vpp); 1745 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 1746 } 1747 } else if (kerbflag) { 1748 vput(*vpp); 1749 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 1750 } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) { 1751 cred->cr_uid = credanon->cr_uid; 1752 cred->cr_gid = credanon->cr_gid; 1753 for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++) 1754 cred->cr_groups[i] = credanon->cr_groups[i]; 1755 cred->cr_ngroups = i; 1756 } 1757 if (exflags & MNT_EXRDONLY) 1758 *rdonlyp = 1; 1759 else 1760 *rdonlyp = 0; 1761 if (!lockflag) 1762 VOP_UNLOCK(*vpp, 0, p); 1763 1764 return (0); 1765 } 1766 1767 /* 1768 * This function compares two net addresses by family and returns TRUE 1769 * if they are the same host. 1770 * If there is any doubt, return FALSE. 1771 * The AF_INET family is handled as a special case so that address mbufs 1772 * don't need to be saved to store "struct in_addr", which is only 4 bytes. 1773 */ 1774 int 1775 netaddr_match(family, haddr, nam) 1776 int family; 1777 union nethostaddr *haddr; 1778 struct mbuf *nam; 1779 { 1780 register struct sockaddr_in *inetaddr; 1781 1782 switch (family) { 1783 case AF_INET: 1784 inetaddr = mtod(nam, struct sockaddr_in *); 1785 if (inetaddr->sin_family == AF_INET && 1786 inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 1787 return (1); 1788 break; 1789 #ifdef ISO 1790 case AF_ISO: 1791 { 1792 register struct sockaddr_iso *isoaddr1, *isoaddr2; 1793 1794 isoaddr1 = mtod(nam, struct sockaddr_iso *); 1795 isoaddr2 = mtod(haddr->had_nam, struct sockaddr_iso *); 1796 if (isoaddr1->siso_family == AF_ISO && 1797 isoaddr1->siso_nlen > 0 && 1798 isoaddr1->siso_nlen == isoaddr2->siso_nlen && 1799 SAME_ISOADDR(isoaddr1, isoaddr2)) 1800 return (1); 1801 break; 1802 } 1803 #endif /* ISO */ 1804 default: 1805 break; 1806 }; 1807 return (0); 1808 } 1809 1810 static nfsuint64 nfs_nullcookie = {{ 0, 0 }}; 1811 /* 1812 * This function finds the directory cookie that corresponds to the 1813 * logical byte offset given. 1814 */ 1815 nfsuint64 * 1816 nfs_getcookie(np, off, add) 1817 register struct nfsnode *np; 1818 off_t off; 1819 int add; 1820 { 1821 register struct nfsdmap *dp, *dp2; 1822 register int pos; 1823 1824 pos = off / NFS_DIRBLKSIZ; 1825 if (pos == 0) { 1826 #ifdef DIAGNOSTIC 1827 if (add) 1828 panic("nfs getcookie add at 0"); 1829 #endif 1830 return (&nfs_nullcookie); 1831 } 1832 pos--; 1833 dp = np->n_cookies.lh_first; 1834 if (!dp) { 1835 if (add) { 1836 MALLOC(dp, struct nfsdmap *, sizeof (struct nfsdmap), 1837 M_NFSDIROFF, M_WAITOK); 1838 dp->ndm_eocookie = 0; 1839 LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list); 1840 } else 1841 return ((nfsuint64 *)0); 1842 } 1843 while (pos >= NFSNUMCOOKIES) { 1844 pos -= NFSNUMCOOKIES; 1845 if (dp->ndm_list.le_next) { 1846 if (!add && dp->ndm_eocookie < NFSNUMCOOKIES && 1847 pos >= dp->ndm_eocookie) 1848 return ((nfsuint64 *)0); 1849 dp = dp->ndm_list.le_next; 1850 } else if (add) { 1851 MALLOC(dp2, struct nfsdmap *, sizeof (struct nfsdmap), 1852 M_NFSDIROFF, M_WAITOK); 1853 dp2->ndm_eocookie = 0; 1854 LIST_INSERT_AFTER(dp, dp2, ndm_list); 1855 dp = dp2; 1856 } else 1857 return ((nfsuint64 *)0); 1858 } 1859 if (pos >= dp->ndm_eocookie) { 1860 if (add) 1861 dp->ndm_eocookie = pos + 1; 1862 else 1863 return ((nfsuint64 *)0); 1864 } 1865 return (&dp->ndm_cookies[pos]); 1866 } 1867 1868 /* 1869 * Invalidate cached directory information, except for the actual directory 1870 * blocks (which are invalidated separately). 1871 * Done mainly to avoid the use of stale offset cookies. 1872 */ 1873 void 1874 nfs_invaldir(vp) 1875 register struct vnode *vp; 1876 { 1877 #ifdef notdef /* XXX */ 1878 register struct nfsnode *np = VTONFS(vp); 1879 1880 #ifdef DIAGNOSTIC 1881 if (vp->v_type != VDIR) 1882 panic("nfs: invaldir not dir"); 1883 #endif 1884 np->n_direofoffset = 0; 1885 np->n_cookieverf.nfsuquad[0] = 0; 1886 np->n_cookieverf.nfsuquad[1] = 0; 1887 if (np->n_cookies.lh_first) 1888 np->n_cookies.lh_first->ndm_eocookie = 0; 1889 #endif 1890 } 1891 1892 /* 1893 * The write verifier has changed (probably due to a server reboot), so all 1894 * B_NEEDCOMMIT blocks will have to be written again. Since they are on the 1895 * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT 1896 * flag. Once done the new write verifier can be set for the mount point. 1897 */ 1898 void 1899 nfs_clearcommit(mp) 1900 struct mount *mp; 1901 { 1902 register struct vnode *vp, *nvp; 1903 register struct buf *bp, *nbp; 1904 int s; 1905 1906 s = splbio(); 1907 loop: 1908 for (vp = mp->mnt_vnodelist.lh_first; vp; vp = nvp) { 1909 if (vp->v_mount != mp) /* Paranoia */ 1910 goto loop; 1911 nvp = vp->v_mntvnodes.le_next; 1912 for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { 1913 nbp = bp->b_vnbufs.le_next; 1914 if ((bp->b_flags & (B_BUSY | B_DELWRI | B_NEEDCOMMIT)) 1915 == (B_DELWRI | B_NEEDCOMMIT)) 1916 bp->b_flags &= ~B_NEEDCOMMIT; 1917 } 1918 } 1919 splx(s); 1920 } 1921 1922 /* 1923 * Map errnos to NFS error numbers. For Version 3 also filter out error 1924 * numbers not specified for the associated procedure. 1925 */ 1926 int 1927 nfsrv_errmap(nd, err) 1928 struct nfsrv_descript *nd; 1929 register int err; 1930 { 1931 register short *defaulterrp, *errp; 1932 1933 if (nd->nd_flag & ND_NFSV3) { 1934 if (nd->nd_procnum <= NFSPROC_COMMIT) { 1935 errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 1936 while (*++errp) { 1937 if (*errp == err) 1938 return (err); 1939 else if (*errp > err) 1940 break; 1941 } 1942 return ((int)*defaulterrp); 1943 } else 1944 return (err & 0xffff); 1945 } 1946 if (err <= ELAST) 1947 return ((int)nfsrv_v2errmap[err - 1]); 1948 return (NFSERR_IO); 1949 } 1950 1951 /* 1952 * Sort the group list in increasing numerical order. 1953 * (Insertion sort by Chris Torek, who was grossed out by the bubble sort 1954 * that used to be here.) 1955 */ 1956 void 1957 nfsrvw_sort(list, num) 1958 register gid_t *list; 1959 register int num; 1960 { 1961 register int i, j; 1962 gid_t v; 1963 1964 /* Insertion sort. */ 1965 for (i = 1; i < num; i++) { 1966 v = list[i]; 1967 /* find correct slot for value v, moving others up */ 1968 for (j = i; --j >= 0 && v < list[j];) 1969 list[j + 1] = list[j]; 1970 list[j + 1] = v; 1971 } 1972 } 1973 1974 /* 1975 * copy credentials making sure that the result can be compared with bcmp(). 1976 */ 1977 void 1978 nfsrv_setcred(incred, outcred) 1979 register struct ucred *incred, *outcred; 1980 { 1981 register int i; 1982 1983 bzero((caddr_t)outcred, sizeof (struct ucred)); 1984 outcred->cr_ref = 1; 1985 outcred->cr_uid = incred->cr_uid; 1986 outcred->cr_gid = incred->cr_gid; 1987 outcred->cr_ngroups = incred->cr_ngroups; 1988 for (i = 0; i < incred->cr_ngroups; i++) 1989 outcred->cr_groups[i] = incred->cr_groups[i]; 1990 nfsrvw_sort(outcred->cr_groups, outcred->cr_ngroups); 1991 } 1992