1 /* 2 * Copyright (c) 1989 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * %sccs.include.redist.c% 9 * 10 * @(#)nfs_vnops.c 7.65 (Berkeley) 01/14/92 11 */ 12 13 /* 14 * vnode op calls for sun nfs version 2 15 */ 16 17 #include "param.h" 18 #include "proc.h" 19 #include "kernel.h" 20 #include "systm.h" 21 #include "mount.h" 22 #include "buf.h" 23 #include "malloc.h" 24 #include "mbuf.h" 25 #include "conf.h" 26 #include "namei.h" 27 #include "vnode.h" 28 #include "specdev.h" 29 #include "fifo.h" 30 #include "map.h" 31 32 #include "ufs/ufs/quota.h" 33 #include "ufs/ufs/inode.h" 34 #include "ufs/ufs/dir.h" 35 36 #include "rpcv2.h" 37 #include "nfsv2.h" 38 #include "nfs.h" 39 #include "nfsnode.h" 40 #include "nfsmount.h" 41 #include "xdr_subs.h" 42 #include "nfsm_subs.h" 43 #include "nqnfs.h" 44 45 /* Defs */ 46 #define TRUE 1 47 #define FALSE 0 48 49 /* 50 * Global vfs data structures for nfs 51 */ 52 struct vnodeops nfsv2_vnodeops = { 53 nfs_lookup, /* lookup */ 54 nfs_create, /* create */ 55 nfs_mknod, /* mknod */ 56 nfs_open, /* open */ 57 nfs_close, /* close */ 58 nfs_access, /* access */ 59 nfs_getattr, /* getattr */ 60 nfs_setattr, /* setattr */ 61 nfs_read, /* read */ 62 nfs_write, /* write */ 63 nfs_ioctl, /* ioctl */ 64 nfs_select, /* select */ 65 nfs_mmap, /* mmap */ 66 nfs_fsync, /* fsync */ 67 nfs_seek, /* seek */ 68 nfs_remove, /* remove */ 69 nfs_link, /* link */ 70 nfs_rename, /* rename */ 71 nfs_mkdir, /* mkdir */ 72 nfs_rmdir, /* rmdir */ 73 nfs_symlink, /* symlink */ 74 nfs_readdir, /* readdir */ 75 nfs_readlink, /* readlink */ 76 nfs_abortop, /* abortop */ 77 nfs_inactive, /* inactive */ 78 nfs_reclaim, /* reclaim */ 79 nfs_lock, /* lock */ 80 nfs_unlock, /* unlock */ 81 nfs_bmap, /* bmap */ 82 nfs_strategy, /* strategy */ 83 nfs_print, /* print */ 84 nfs_islocked, /* islocked */ 85 nfs_advlock, /* advlock */ 86 nfs_blkatoff, /* blkatoff */ 87 nfs_vget, /* vget */ 88 nfs_valloc, /* valloc */ 89 nfs_vfree, /* vfree */ 90 nfs_truncate, /* truncate */ 91 nfs_update, /* update */ 92 bwrite, /* bwrite */ 93 }; 94 95 /* 96 * Special device vnode ops 97 */ 98 struct vnodeops spec_nfsv2nodeops = { 99 spec_lookup, /* lookup */ 100 spec_create, /* create */ 101 spec_mknod, /* mknod */ 102 spec_open, /* open */ 103 spec_close, /* close */ 104 nfs_access, /* access */ 105 nfs_getattr, /* getattr */ 106 nfs_setattr, /* setattr */ 107 spec_read, /* read */ 108 spec_write, /* write */ 109 spec_ioctl, /* ioctl */ 110 spec_select, /* select */ 111 spec_mmap, /* mmap */ 112 spec_fsync, /* fsync */ 113 spec_seek, /* seek */ 114 spec_remove, /* remove */ 115 spec_link, /* link */ 116 spec_rename, /* rename */ 117 spec_mkdir, /* mkdir */ 118 spec_rmdir, /* rmdir */ 119 spec_symlink, /* symlink */ 120 spec_readdir, /* readdir */ 121 spec_readlink, /* readlink */ 122 spec_abortop, /* abortop */ 123 nfs_inactive, /* inactive */ 124 nfs_reclaim, /* reclaim */ 125 nfs_lock, /* lock */ 126 nfs_unlock, /* unlock */ 127 spec_bmap, /* bmap */ 128 spec_strategy, /* strategy */ 129 nfs_print, /* print */ 130 nfs_islocked, /* islocked */ 131 spec_advlock, /* advlock */ 132 spec_blkatoff, /* blkatoff */ 133 spec_vget, /* vget */ 134 spec_valloc, /* valloc */ 135 spec_vfree, /* vfree */ 136 spec_truncate, /* truncate */ 137 nfs_update, /* update */ 138 bwrite, /* bwrite */ 139 }; 140 141 #ifdef FIFO 142 struct vnodeops fifo_nfsv2nodeops = { 143 fifo_lookup, /* lookup */ 144 fifo_create, /* create */ 145 fifo_mknod, /* mknod */ 146 fifo_open, /* open */ 147 fifo_close, /* close */ 148 nfs_access, /* access */ 149 nfs_getattr, /* getattr */ 150 nfs_setattr, /* setattr */ 151 fifo_read, /* read */ 152 fifo_write, /* write */ 153 fifo_ioctl, /* ioctl */ 154 fifo_select, /* select */ 155 fifo_mmap, /* mmap */ 156 fifo_fsync, /* fsync */ 157 fifo_seek, /* seek */ 158 fifo_remove, /* remove */ 159 fifo_link, /* link */ 160 fifo_rename, /* rename */ 161 fifo_mkdir, /* mkdir */ 162 fifo_rmdir, /* rmdir */ 163 fifo_symlink, /* symlink */ 164 fifo_readdir, /* readdir */ 165 fifo_readlink, /* readlink */ 166 fifo_abortop, /* abortop */ 167 nfs_inactive, /* inactive */ 168 nfs_reclaim, /* reclaim */ 169 nfs_lock, /* lock */ 170 nfs_unlock, /* unlock */ 171 fifo_bmap, /* bmap */ 172 fifo_badop, /* strategy */ 173 nfs_print, /* print */ 174 nfs_islocked, /* islocked */ 175 fifo_advlock, /* advlock */ 176 fifo_blkatoff, /* blkatoff */ 177 fifo_vget, /* vget */ 178 fifo_valloc, /* valloc */ 179 fifo_vfree, /* vfree */ 180 fifo_truncate, /* truncate */ 181 nfs_update, /* update */ 182 bwrite, /* bwrite */ 183 }; 184 #endif /* FIFO */ 185 186 /* 187 * Global variables 188 */ 189 extern u_long nfs_procids[NFS_NPROCS]; 190 extern u_long nfs_prog, nfs_vers; 191 extern char nfsiobuf[MAXPHYS+NBPG]; 192 struct buf nfs_bqueue; /* Queue head for nfsiod's */ 193 struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON]; 194 int nfs_numasync = 0; 195 #define DIRHDSIZ (sizeof (struct direct) - (MAXNAMLEN + 1)) 196 197 /* 198 * nfs null call from vfs. 199 */ 200 nfs_null(vp, cred, procp) 201 struct vnode *vp; 202 struct ucred *cred; 203 struct proc *procp; 204 { 205 caddr_t bpos, dpos; 206 int error = 0; 207 struct mbuf *mreq, *mrep, *md, *mb; 208 209 nfsm_reqhead(vp, NFSPROC_NULL, 0); 210 nfsm_request(vp, NFSPROC_NULL, procp, cred); 211 nfsm_reqdone; 212 return (error); 213 } 214 215 /* 216 * nfs access vnode op. 217 * Essentially just get vattr and then imitate iaccess() 218 */ 219 nfs_access(vp, mode, cred, procp) 220 struct vnode *vp; 221 int mode; 222 register struct ucred *cred; 223 struct proc *procp; 224 { 225 register struct vattr *vap; 226 register gid_t *gp; 227 struct vattr vattr; 228 register int i; 229 int error; 230 231 /* 232 * If you're the super-user, 233 * you always get access. 234 */ 235 if (cred->cr_uid == 0) 236 return (0); 237 vap = &vattr; 238 if (error = nfs_getattr(vp, vap, cred, procp)) 239 return (error); 240 /* 241 * Access check is based on only one of owner, group, public. 242 * If not owner, then check group. If not a member of the 243 * group, then check public access. 244 */ 245 if (cred->cr_uid != vap->va_uid) { 246 mode >>= 3; 247 gp = cred->cr_groups; 248 for (i = 0; i < cred->cr_ngroups; i++, gp++) 249 if (vap->va_gid == *gp) 250 goto found; 251 mode >>= 3; 252 found: 253 ; 254 } 255 if ((vap->va_mode & mode) != 0) 256 return (0); 257 return (EACCES); 258 } 259 260 /* 261 * nfs open vnode op 262 * Just check to see if the type is ok 263 * and that deletion is not in progress. 264 */ 265 /* ARGSUSED */ 266 nfs_open(vp, mode, cred, procp) 267 register struct vnode *vp; 268 int mode; 269 struct ucred *cred; 270 struct proc *procp; 271 { 272 273 if (vp->v_type != VREG && vp->v_type != VDIR && vp->v_type != VLNK) 274 return (EACCES); 275 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) == 0) 276 VTONFS(vp)->n_attrstamp = 0; /* For Open/Close consistency */ 277 return (0); 278 } 279 280 /* 281 * nfs close vnode op 282 * For reg files, invalidate any buffer cache entries. 283 */ 284 /* ARGSUSED */ 285 nfs_close(vp, fflags, cred, procp) 286 register struct vnode *vp; 287 int fflags; 288 struct ucred *cred; 289 struct proc *procp; 290 { 291 register struct nfsnode *np = VTONFS(vp); 292 int error = 0; 293 294 if ((np->n_flag & NMODIFIED) && 295 (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) == 0 && 296 vp->v_type == VREG) { 297 np->n_flag &= ~NMODIFIED; 298 vinvalbuf(vp, TRUE); 299 np->n_attrstamp = 0; 300 if (np->n_flag & NWRITEERR) { 301 np->n_flag &= ~NWRITEERR; 302 error = np->n_error; 303 } 304 } 305 return (error); 306 } 307 308 /* 309 * nfs getattr call from vfs. 310 */ 311 nfs_getattr(vp, vap, cred, procp) 312 register struct vnode *vp; 313 struct vattr *vap; 314 struct ucred *cred; 315 struct proc *procp; 316 { 317 register caddr_t cp; 318 caddr_t bpos, dpos; 319 int error = 0; 320 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 321 322 /* First look in the cache.. */ 323 if (nfs_getattrcache(vp, vap) == 0) 324 return (0); 325 nfsstats.rpccnt[NFSPROC_GETATTR]++; 326 nfsm_reqhead(vp, NFSPROC_GETATTR, NFSX_FH); 327 nfsm_fhtom(vp); 328 nfsm_request(vp, NFSPROC_GETATTR, procp, cred); 329 nfsm_loadattr(vp, vap); 330 nfsm_reqdone; 331 return (error); 332 } 333 334 /* 335 * nfs setattr call. 336 */ 337 nfs_setattr(vp, vap, cred, procp) 338 register struct vnode *vp; 339 register struct vattr *vap; 340 struct ucred *cred; 341 struct proc *procp; 342 { 343 register struct nfsv2_sattr *sp; 344 register caddr_t cp; 345 register long t1; 346 caddr_t bpos, dpos, cp2; 347 u_long *tl; 348 int error = 0; 349 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 350 struct nfsnode *np = VTONFS(vp); 351 u_quad_t frev; 352 353 nfsstats.rpccnt[NFSPROC_SETATTR]++; 354 nfsm_reqhead(vp, NFSPROC_SETATTR, NFSX_FH+NFSX_SATTR); 355 nfsm_fhtom(vp); 356 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR); 357 if (vap->va_mode == 0xffff) 358 sp->sa_mode = VNOVAL; 359 else 360 sp->sa_mode = vtonfs_mode(vp->v_type, vap->va_mode); 361 if (vap->va_uid == 0xffff) 362 sp->sa_uid = VNOVAL; 363 else 364 sp->sa_uid = txdr_unsigned(vap->va_uid); 365 if (vap->va_gid == 0xffff) 366 sp->sa_gid = VNOVAL; 367 else 368 sp->sa_gid = txdr_unsigned(vap->va_gid); 369 sp->sa_size = txdr_unsigned(vap->va_size); 370 sp->sa_atime.tv_sec = txdr_unsigned(vap->va_atime.tv_sec); 371 sp->sa_atime.tv_usec = txdr_unsigned(vap->va_flags); 372 txdr_time(&vap->va_mtime, &sp->sa_mtime); 373 if (vap->va_size != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 374 vap->va_atime.tv_sec != VNOVAL) { 375 if (np->n_flag & NMODIFIED) { 376 np->n_flag &= ~NMODIFIED; 377 if (vap->va_size == 0) 378 vinvalbuf(vp, FALSE); 379 else 380 vinvalbuf(vp, TRUE); 381 } 382 } 383 nfsm_request(vp, NFSPROC_SETATTR, procp, cred); 384 nfsm_loadattr(vp, (struct vattr *)0); 385 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) && 386 NQNFS_CKCACHABLE(vp, NQL_WRITE)) { 387 nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED); 388 fxdr_hyper(tl, &frev); 389 if (QUADGT(frev, np->n_brev)) 390 np->n_brev = frev; 391 } 392 nfsm_reqdone; 393 return (error); 394 } 395 396 /* 397 * nfs lookup call, one step at a time... 398 * First look in cache 399 * If not found, unlock the directory nfsnode and do the rpc 400 */ 401 nfs_lookup(vp, ndp, procp) 402 register struct vnode *vp; 403 register struct nameidata *ndp; 404 struct proc *procp; 405 { 406 register struct vnode *vdp; 407 register u_long *tl; 408 register caddr_t cp; 409 register long t1, t2; 410 struct nfsmount *nmp; 411 struct nfsnode *tp; 412 caddr_t bpos, dpos, cp2; 413 time_t reqtime; 414 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 415 struct vnode *newvp; 416 long len; 417 nfsv2fh_t *fhp; 418 struct nfsnode *np; 419 int lockparent, wantparent, flag, error = 0; 420 int nqlflag, cachable; 421 u_quad_t frev; 422 423 ndp->ni_dvp = vp; 424 ndp->ni_vp = NULL; 425 if (vp->v_type != VDIR) 426 return (ENOTDIR); 427 lockparent = ndp->ni_nameiop & LOCKPARENT; 428 flag = ndp->ni_nameiop & OPMASK; 429 wantparent = ndp->ni_nameiop & (LOCKPARENT|WANTPARENT); 430 nmp = VFSTONFS(vp->v_mount); 431 np = VTONFS(vp); 432 if ((error = cache_lookup(ndp)) && error != ENOENT) { 433 struct vattr vattr; 434 int vpid; 435 436 vdp = ndp->ni_vp; 437 vpid = vdp->v_id; 438 /* 439 * See the comment starting `Step through' in ufs/ufs_lookup.c 440 * for an explanation of the locking protocol 441 */ 442 if (vp == vdp) { 443 VREF(vdp); 444 error = 0; 445 } else 446 error = vget(vdp); 447 if (!error) { 448 if (vpid == vdp->v_id) { 449 if (nmp->nm_flag & NFSMNT_NQNFS) { 450 if (NQNFS_CKCACHABLE(vp, NQL_READ)) { 451 if (QUADNE(np->n_lrev, np->n_brev) || 452 (np->n_flag & NMODIFIED)) { 453 np->n_direofoffset = 0; 454 cache_purge(vp); 455 np->n_flag &= ~NMODIFIED; 456 vinvalbuf(vp, FALSE); 457 np->n_brev = np->n_lrev; 458 } else { 459 nfsstats.lookupcache_hits++; 460 if (flag != LOOKUP && 461 *ndp->ni_next == '\0') 462 ndp->ni_nameiop |= SAVENAME; 463 return (0); 464 } 465 } 466 } else if (!nfs_getattr(vdp, &vattr, ndp->ni_cred, procp) && 467 vattr.va_ctime.tv_sec == VTONFS(vdp)->n_ctime) { 468 nfsstats.lookupcache_hits++; 469 if (flag != LOOKUP && *ndp->ni_next == '\0') 470 ndp->ni_nameiop |= SAVENAME; 471 return (0); 472 } 473 cache_purge(vdp); 474 } 475 vrele(vdp); 476 } 477 ndp->ni_vp = NULLVP; 478 } 479 error = 0; 480 nfsstats.lookupcache_misses++; 481 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 482 len = ndp->ni_namelen; 483 nfsm_reqhead(vp, NFSPROC_LOOKUP, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 484 485 /* 486 * For nqnfs optionally piggyback a getlease request for the name 487 * being looked up. 488 */ 489 if (nmp->nm_flag & NFSMNT_NQNFS) { 490 if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) && 491 (ndp->ni_makeentry && (flag != DELETE || *ndp->ni_next))) { 492 nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); 493 *tl++ = txdr_unsigned(NQL_READ); 494 *tl = txdr_unsigned(nmp->nm_leaseterm); 495 } else { 496 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 497 *tl = 0; 498 } 499 } 500 nfsm_fhtom(vp); 501 nfsm_strtom(ndp->ni_ptr, len, NFS_MAXNAMLEN); 502 reqtime = time.tv_sec; 503 nfsm_request(vp, NFSPROC_LOOKUP, procp, ndp->ni_cred); 504 nfsmout: 505 if (error) { 506 if (flag != LOOKUP && *ndp->ni_next == '\0') 507 ndp->ni_nameiop |= SAVENAME; 508 return (error); 509 } 510 if (nmp->nm_flag & NFSMNT_NQNFS) { 511 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 512 if (*tl) { 513 nqlflag = fxdr_unsigned(int, *tl); 514 nfsm_dissect(tl, u_long *, 4*NFSX_UNSIGNED); 515 cachable = fxdr_unsigned(int, *tl++); 516 reqtime += fxdr_unsigned(int, *tl++); 517 fxdr_hyper(tl, &frev); 518 } else 519 nqlflag = 0; 520 } 521 nfsm_dissect(fhp, nfsv2fh_t *, NFSX_FH); 522 523 /* 524 * Handle RENAME case... 525 */ 526 if (flag == RENAME && wantparent && *ndp->ni_next == 0) { 527 if (!bcmp(np->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 528 m_freem(mrep); 529 return (EISDIR); 530 } 531 if (error = nfs_nget(vp->v_mount, fhp, &np)) { 532 m_freem(mrep); 533 return (error); 534 } 535 newvp = NFSTOV(np); 536 if (error = 537 nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) { 538 vrele(newvp); 539 m_freem(mrep); 540 return (error); 541 } 542 ndp->ni_vp = newvp; 543 m_freem(mrep); 544 ndp->ni_nameiop |= SAVENAME; 545 return (0); 546 } 547 548 if (!bcmp(np->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 549 VREF(vp); 550 newvp = vp; 551 } else { 552 if (error = nfs_nget(vp->v_mount, fhp, &np)) { 553 m_freem(mrep); 554 return (error); 555 } 556 newvp = NFSTOV(np); 557 } 558 if (error = nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) { 559 vrele(newvp); 560 m_freem(mrep); 561 return (error); 562 } 563 m_freem(mrep); 564 ndp->ni_vp = newvp; 565 if (flag != LOOKUP && *ndp->ni_next == '\0') 566 ndp->ni_nameiop |= SAVENAME; 567 if (ndp->ni_makeentry && (flag != DELETE || *ndp->ni_next)) { 568 if ((nmp->nm_flag & NFSMNT_NQNFS) == 0) 569 np->n_ctime = np->n_vattr.va_ctime.tv_sec; 570 else if (nqlflag && reqtime > time.tv_sec) { 571 if (np->n_tnext) { 572 if (np->n_tnext == (struct nfsnode *)nmp) 573 nmp->nm_tprev = np->n_tprev; 574 else 575 np->n_tnext->n_tprev = np->n_tprev; 576 if (np->n_tprev == (struct nfsnode *)nmp) 577 nmp->nm_tnext = np->n_tnext; 578 else 579 np->n_tprev->n_tnext = np->n_tnext; 580 if (nqlflag == NQL_WRITE) 581 np->n_flag |= NQNFSWRITE; 582 } else if (nqlflag == NQL_READ) 583 np->n_flag &= ~NQNFSWRITE; 584 else 585 np->n_flag |= NQNFSWRITE; 586 if (cachable) 587 np->n_flag &= ~NQNFSNONCACHE; 588 else 589 np->n_flag |= NQNFSNONCACHE; 590 np->n_expiry = reqtime; 591 np->n_lrev = frev; 592 tp = nmp->nm_tprev; 593 while (tp != (struct nfsnode *)nmp && tp->n_expiry > np->n_expiry) 594 tp = tp->n_tprev; 595 if (tp == (struct nfsnode *)nmp) { 596 np->n_tnext = nmp->nm_tnext; 597 nmp->nm_tnext = np; 598 } else { 599 np->n_tnext = tp->n_tnext; 600 tp->n_tnext = np; 601 } 602 np->n_tprev = tp; 603 if (np->n_tnext == (struct nfsnode *)nmp) 604 nmp->nm_tprev = np; 605 else 606 np->n_tnext->n_tprev = np; 607 } 608 cache_enter(ndp); 609 } 610 return (0); 611 } 612 613 /* 614 * nfs read call. 615 * Just call nfs_bioread() to do the work. 616 */ 617 nfs_read(vp, uiop, ioflag, cred) 618 register struct vnode *vp; 619 struct uio *uiop; 620 int ioflag; 621 struct ucred *cred; 622 { 623 if (vp->v_type != VREG) 624 return (EPERM); 625 return (nfs_bioread(vp, uiop, ioflag, cred)); 626 } 627 628 /* 629 * nfs readlink call 630 */ 631 nfs_readlink(vp, uiop, cred) 632 struct vnode *vp; 633 struct uio *uiop; 634 struct ucred *cred; 635 { 636 if (vp->v_type != VLNK) 637 return (EPERM); 638 return (nfs_bioread(vp, uiop, 0, cred)); 639 } 640 641 /* 642 * Do a readlink rpc. 643 * Called by nfs_doio() from below the buffer cache. 644 */ 645 nfs_readlinkrpc(vp, uiop, cred) 646 register struct vnode *vp; 647 struct uio *uiop; 648 struct ucred *cred; 649 { 650 register u_long *tl; 651 register caddr_t cp; 652 register long t1; 653 caddr_t bpos, dpos, cp2; 654 int error = 0; 655 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 656 long len; 657 658 nfsstats.rpccnt[NFSPROC_READLINK]++; 659 nfsm_reqhead(vp, NFSPROC_READLINK, NFSX_FH); 660 nfsm_fhtom(vp); 661 nfsm_request(vp, NFSPROC_READLINK, uiop->uio_procp, cred); 662 nfsm_strsiz(len, NFS_MAXPATHLEN); 663 nfsm_mtouio(uiop, len); 664 nfsm_reqdone; 665 return (error); 666 } 667 668 /* 669 * nfs read rpc call 670 * Ditto above 671 */ 672 nfs_readrpc(vp, uiop, cred) 673 register struct vnode *vp; 674 struct uio *uiop; 675 struct ucred *cred; 676 { 677 register u_long *tl; 678 register caddr_t cp; 679 register long t1; 680 caddr_t bpos, dpos, cp2; 681 int error = 0; 682 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 683 struct nfsmount *nmp; 684 long len, retlen, tsiz; 685 686 nmp = VFSTONFS(vp->v_mount); 687 tsiz = uiop->uio_resid; 688 while (tsiz > 0) { 689 nfsstats.rpccnt[NFSPROC_READ]++; 690 len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz; 691 nfsm_reqhead(vp, NFSPROC_READ, NFSX_FH+NFSX_UNSIGNED*3); 692 nfsm_fhtom(vp); 693 nfsm_build(tl, u_long *, NFSX_UNSIGNED*3); 694 *tl++ = txdr_unsigned(uiop->uio_offset); 695 *tl++ = txdr_unsigned(len); 696 *tl = 0; 697 nfsm_request(vp, NFSPROC_READ, uiop->uio_procp, cred); 698 nfsm_loadattr(vp, (struct vattr *)0); 699 nfsm_strsiz(retlen, nmp->nm_rsize); 700 nfsm_mtouio(uiop, retlen); 701 m_freem(mrep); 702 if (retlen < len) 703 tsiz = 0; 704 else 705 tsiz -= len; 706 } 707 nfsmout: 708 return (error); 709 } 710 711 /* 712 * nfs write call 713 */ 714 nfs_writerpc(vp, uiop, cred) 715 register struct vnode *vp; 716 struct uio *uiop; 717 struct ucred *cred; 718 { 719 register u_long *tl; 720 register caddr_t cp; 721 register long t1; 722 caddr_t bpos, dpos, cp2; 723 int error = 0; 724 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 725 struct nfsmount *nmp; 726 struct nfsnode *np = VTONFS(vp); 727 u_quad_t frev; 728 long len, tsiz; 729 730 nmp = VFSTONFS(vp->v_mount); 731 tsiz = uiop->uio_resid; 732 while (tsiz > 0) { 733 nfsstats.rpccnt[NFSPROC_WRITE]++; 734 len = (tsiz > nmp->nm_wsize) ? nmp->nm_wsize : tsiz; 735 nfsm_reqhead(vp, NFSPROC_WRITE, 736 NFSX_FH+NFSX_UNSIGNED*4+nfsm_rndup(len)); 737 nfsm_fhtom(vp); 738 nfsm_build(tl, u_long *, NFSX_UNSIGNED*4); 739 *(tl+1) = txdr_unsigned(uiop->uio_offset); 740 *(tl+3) = txdr_unsigned(len); 741 nfsm_uiotom(uiop, len); 742 nfsm_request(vp, NFSPROC_WRITE, uiop->uio_procp, cred); 743 nfsm_loadattr(vp, (struct vattr *)0); 744 if (nmp->nm_flag & NFSMNT_MYWRITE) 745 VTONFS(vp)->n_mtime = VTONFS(vp)->n_vattr.va_mtime.tv_sec; 746 else if ((nmp->nm_flag & NFSMNT_NQNFS) && 747 NQNFS_CKCACHABLE(vp, NQL_WRITE)) { 748 nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED); 749 fxdr_hyper(tl, &frev); 750 if (QUADGT(frev, np->n_brev)) 751 np->n_brev = frev; 752 } 753 m_freem(mrep); 754 tsiz -= len; 755 } 756 nfsmout: 757 if (error) 758 uiop->uio_resid = tsiz; 759 return (error); 760 } 761 762 /* 763 * nfs mknod call 764 * This is a kludge. Use a create rpc but with the IFMT bits of the mode 765 * set to specify the file type and the size field for rdev. 766 */ 767 /* ARGSUSED */ 768 nfs_mknod(ndp, vap, cred, procp) 769 struct nameidata *ndp; 770 struct ucred *cred; 771 register struct vattr *vap; 772 struct proc *procp; 773 { 774 register struct nfsv2_sattr *sp; 775 register u_long *tl; 776 register caddr_t cp; 777 register long t2; 778 caddr_t bpos, dpos; 779 int error = 0; 780 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 781 u_long rdev; 782 783 if (vap->va_type == VCHR || vap->va_type == VBLK) 784 rdev = txdr_unsigned(vap->va_rdev); 785 #ifdef FIFO 786 else if (vap->va_type == VFIFO) 787 rdev = 0xffffffff; 788 #endif /* FIFO */ 789 else { 790 VOP_ABORTOP(ndp); 791 vput(ndp->ni_dvp); 792 return (EOPNOTSUPP); 793 } 794 nfsstats.rpccnt[NFSPROC_CREATE]++; 795 nfsm_reqhead(ndp->ni_dvp, NFSPROC_CREATE, 796 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(ndp->ni_namelen)+NFSX_SATTR); 797 nfsm_fhtom(ndp->ni_dvp); 798 nfsm_strtom(ndp->ni_ptr, ndp->ni_namelen, NFS_MAXNAMLEN); 799 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR); 800 sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode); 801 sp->sa_uid = txdr_unsigned(ndp->ni_cred->cr_uid); 802 sp->sa_gid = txdr_unsigned(ndp->ni_cred->cr_gid); 803 sp->sa_size = rdev; 804 /* or should these be VNOVAL ?? */ 805 txdr_time(&vap->va_atime, &sp->sa_atime); 806 txdr_time(&vap->va_mtime, &sp->sa_mtime); 807 nfsm_request(ndp->ni_dvp, NFSPROC_CREATE, procp, cred); 808 nfsm_reqdone; 809 FREE(ndp->ni_pnbuf, M_NAMEI); 810 VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; 811 vrele(ndp->ni_dvp); 812 return (error); 813 } 814 815 /* 816 * nfs file create call 817 */ 818 nfs_create(ndp, vap, procp) 819 register struct nameidata *ndp; 820 register struct vattr *vap; 821 struct proc *procp; 822 { 823 register struct nfsv2_sattr *sp; 824 register u_long *tl; 825 register caddr_t cp; 826 register long t1, t2; 827 caddr_t bpos, dpos, cp2; 828 int error = 0; 829 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 830 831 nfsstats.rpccnt[NFSPROC_CREATE]++; 832 nfsm_reqhead(ndp->ni_dvp, NFSPROC_CREATE, 833 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(ndp->ni_namelen)+NFSX_SATTR); 834 nfsm_fhtom(ndp->ni_dvp); 835 nfsm_strtom(ndp->ni_ptr, ndp->ni_namelen, NFS_MAXNAMLEN); 836 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR); 837 sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode); 838 sp->sa_uid = txdr_unsigned(ndp->ni_cred->cr_uid); 839 sp->sa_gid = txdr_unsigned(ndp->ni_cred->cr_gid); 840 sp->sa_size = txdr_unsigned(0); 841 /* or should these be VNOVAL ?? */ 842 txdr_time(&vap->va_atime, &sp->sa_atime); 843 txdr_time(&vap->va_mtime, &sp->sa_mtime); 844 nfsm_request(ndp->ni_dvp, NFSPROC_CREATE, procp, ndp->ni_cred); 845 nfsm_mtofh(ndp->ni_dvp, ndp->ni_vp); 846 nfsm_reqdone; 847 FREE(ndp->ni_pnbuf, M_NAMEI); 848 VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; 849 vrele(ndp->ni_dvp); 850 return (error); 851 } 852 853 /* 854 * nfs file remove call 855 * To try and make nfs semantics closer to ufs semantics, a file that has 856 * other processes using the vnode is renamed instead of removed and then 857 * removed later on the last close. 858 * - If v_usecount > 1 859 * If a rename is not already in the works 860 * call nfs_sillyrename() to set it up 861 * else 862 * do the remove rpc 863 */ 864 nfs_remove(ndp, procp) 865 register struct nameidata *ndp; 866 struct proc *procp; 867 { 868 register struct vnode *vp = ndp->ni_vp; 869 register struct nfsnode *np = VTONFS(ndp->ni_vp); 870 register u_long *tl; 871 register caddr_t cp; 872 register long t2; 873 caddr_t bpos, dpos; 874 int error = 0; 875 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 876 877 if (vp->v_usecount > 1) { 878 if (!np->n_sillyrename) 879 error = nfs_sillyrename(ndp, procp); 880 } else { 881 /* 882 * Purge the name cache so that the chance of a lookup for 883 * the name succeeding while the remove is in progress is 884 * minimized. Without node locking it can still happen, such 885 * that an I/O op returns ESTALE, but since you get this if 886 * another host removes the file.. 887 */ 888 cache_purge(vp); 889 /* 890 * Throw away biocache buffers. Mainly to avoid 891 * unnecessary delayed writes. 892 */ 893 vinvalbuf(vp, FALSE); 894 /* Do the rpc */ 895 nfsstats.rpccnt[NFSPROC_REMOVE]++; 896 nfsm_reqhead(ndp->ni_dvp, NFSPROC_REMOVE, 897 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(ndp->ni_namelen)); 898 nfsm_fhtom(ndp->ni_dvp); 899 nfsm_strtom(ndp->ni_ptr, ndp->ni_namelen, NFS_MAXNAMLEN); 900 nfsm_request(ndp->ni_dvp, NFSPROC_REMOVE, procp, ndp->ni_cred); 901 nfsm_reqdone; 902 FREE(ndp->ni_pnbuf, M_NAMEI); 903 VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; 904 /* 905 * Kludge City: If the first reply to the remove rpc is lost.. 906 * the reply to the retransmitted request will be ENOENT 907 * since the file was in fact removed 908 * Therefore, we cheat and return success. 909 */ 910 if (error == ENOENT) 911 error = 0; 912 } 913 np->n_attrstamp = 0; 914 vrele(ndp->ni_dvp); 915 vrele(vp); 916 return (error); 917 } 918 919 /* 920 * nfs file remove rpc called from nfs_inactive 921 */ 922 nfs_removeit(sp, procp) 923 register struct sillyrename *sp; 924 struct proc *procp; 925 { 926 register u_long *tl; 927 register caddr_t cp; 928 register long t2; 929 caddr_t bpos, dpos; 930 int error = 0; 931 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 932 933 nfsstats.rpccnt[NFSPROC_REMOVE]++; 934 nfsm_reqhead(sp->s_dvp, NFSPROC_REMOVE, 935 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(sp->s_namlen)); 936 nfsm_fhtom(sp->s_dvp); 937 nfsm_strtom(sp->s_name, sp->s_namlen, NFS_MAXNAMLEN); 938 nfsm_request(sp->s_dvp, NFSPROC_REMOVE, procp, sp->s_cred); 939 nfsm_reqdone; 940 VTONFS(sp->s_dvp)->n_flag |= NMODIFIED; 941 return (error); 942 } 943 944 /* 945 * nfs file rename call 946 */ 947 nfs_rename(sndp, tndp, procp) 948 register struct nameidata *sndp, *tndp; 949 struct proc *procp; 950 { 951 register u_long *tl; 952 register caddr_t cp; 953 register long t2; 954 caddr_t bpos, dpos; 955 int error = 0; 956 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 957 958 nfsstats.rpccnt[NFSPROC_RENAME]++; 959 nfsm_reqhead(sndp->ni_dvp, NFSPROC_RENAME, 960 (NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(sndp->ni_namelen)+ 961 nfsm_rndup(tndp->ni_namelen)); /* or sndp->ni_cred?*/ 962 nfsm_fhtom(sndp->ni_dvp); 963 nfsm_strtom(sndp->ni_ptr, sndp->ni_namelen, NFS_MAXNAMLEN); 964 nfsm_fhtom(tndp->ni_dvp); 965 nfsm_strtom(tndp->ni_ptr, tndp->ni_namelen, NFS_MAXNAMLEN); 966 nfsm_request(sndp->ni_dvp, NFSPROC_RENAME, procp, tndp->ni_cred); 967 nfsm_reqdone; 968 VTONFS(sndp->ni_dvp)->n_flag |= NMODIFIED; 969 VTONFS(tndp->ni_dvp)->n_flag |= NMODIFIED; 970 if (sndp->ni_vp->v_type == VDIR) { 971 if (tndp->ni_vp != NULL && tndp->ni_vp->v_type == VDIR) 972 cache_purge(tndp->ni_dvp); 973 cache_purge(sndp->ni_dvp); 974 } 975 if (tndp->ni_dvp == tndp->ni_vp) 976 vrele(tndp->ni_dvp); 977 else 978 vput(tndp->ni_dvp); 979 if (tndp->ni_vp) 980 vput(tndp->ni_vp); 981 vrele(sndp->ni_dvp); 982 vrele(sndp->ni_vp); 983 /* 984 * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry. 985 */ 986 if (error == ENOENT) 987 error = 0; 988 return (error); 989 } 990 991 /* 992 * nfs file rename rpc called from nfs_remove() above 993 */ 994 nfs_renameit(sndp, sp, procp) 995 register struct nameidata *sndp; 996 register struct sillyrename *sp; 997 struct proc *procp; 998 { 999 register u_long *tl; 1000 register caddr_t cp; 1001 register long t2; 1002 caddr_t bpos, dpos; 1003 int error = 0; 1004 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1005 1006 nfsstats.rpccnt[NFSPROC_RENAME]++; 1007 nfsm_reqhead(sndp->ni_dvp, NFSPROC_RENAME, 1008 (NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(sndp->ni_namelen)+ 1009 nfsm_rndup(sp->s_namlen)); 1010 nfsm_fhtom(sndp->ni_dvp); 1011 nfsm_strtom(sndp->ni_ptr, sndp->ni_namelen, NFS_MAXNAMLEN); 1012 nfsm_fhtom(sp->s_dvp); 1013 nfsm_strtom(sp->s_name, sp->s_namlen, NFS_MAXNAMLEN); 1014 nfsm_request(sndp->ni_dvp, NFSPROC_RENAME, procp, sndp->ni_cred); 1015 nfsm_reqdone; 1016 FREE(sndp->ni_pnbuf, M_NAMEI); 1017 VTONFS(sndp->ni_dvp)->n_flag |= NMODIFIED; 1018 return (error); 1019 } 1020 1021 /* 1022 * nfs hard link create call 1023 */ 1024 nfs_link(vp, ndp, procp) 1025 register struct vnode *vp; 1026 register struct nameidata *ndp; 1027 struct proc *procp; 1028 { 1029 register u_long *tl; 1030 register caddr_t cp; 1031 register long t2; 1032 caddr_t bpos, dpos; 1033 int error = 0; 1034 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1035 1036 nfsstats.rpccnt[NFSPROC_LINK]++; 1037 nfsm_reqhead(vp, NFSPROC_LINK, 1038 NFSX_FH*2+NFSX_UNSIGNED+nfsm_rndup(ndp->ni_namelen)); 1039 nfsm_fhtom(vp); 1040 nfsm_fhtom(ndp->ni_dvp); 1041 nfsm_strtom(ndp->ni_ptr, ndp->ni_namelen, NFS_MAXNAMLEN); 1042 nfsm_request(vp, NFSPROC_LINK, procp, ndp->ni_cred); 1043 nfsm_reqdone; 1044 FREE(ndp->ni_pnbuf, M_NAMEI); 1045 VTONFS(vp)->n_attrstamp = 0; 1046 VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; 1047 vrele(ndp->ni_dvp); 1048 /* 1049 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 1050 */ 1051 if (error == EEXIST) 1052 error = 0; 1053 return (error); 1054 } 1055 1056 /* 1057 * nfs symbolic link create call 1058 */ 1059 nfs_symlink(ndp, vap, nm, procp) 1060 struct nameidata *ndp; 1061 struct vattr *vap; 1062 char *nm; 1063 struct proc *procp; 1064 { 1065 register struct nfsv2_sattr *sp; 1066 register u_long *tl; 1067 register caddr_t cp; 1068 register long t2; 1069 caddr_t bpos, dpos; 1070 int slen, error = 0; 1071 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1072 1073 nfsstats.rpccnt[NFSPROC_SYMLINK]++; 1074 slen = strlen(nm); 1075 nfsm_reqhead(ndp->ni_dvp, NFSPROC_SYMLINK, 1076 NFSX_FH+2*NFSX_UNSIGNED+nfsm_rndup(ndp->ni_namelen)+nfsm_rndup(slen)+NFSX_SATTR); 1077 nfsm_fhtom(ndp->ni_dvp); 1078 nfsm_strtom(ndp->ni_ptr, ndp->ni_namelen, NFS_MAXNAMLEN); 1079 nfsm_strtom(nm, slen, NFS_MAXPATHLEN); 1080 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR); 1081 sp->sa_mode = vtonfs_mode(VLNK, vap->va_mode); 1082 sp->sa_uid = txdr_unsigned(ndp->ni_cred->cr_uid); 1083 sp->sa_gid = txdr_unsigned(ndp->ni_cred->cr_gid); 1084 sp->sa_size = txdr_unsigned(VNOVAL); 1085 txdr_time(&vap->va_atime, &sp->sa_atime); /* or VNOVAL ?? */ 1086 txdr_time(&vap->va_mtime, &sp->sa_mtime); /* or VNOVAL ?? */ 1087 nfsm_request(ndp->ni_dvp, NFSPROC_SYMLINK, procp, ndp->ni_cred); 1088 nfsm_reqdone; 1089 FREE(ndp->ni_pnbuf, M_NAMEI); 1090 VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; 1091 vrele(ndp->ni_dvp); 1092 /* 1093 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 1094 */ 1095 if (error == EEXIST) 1096 error = 0; 1097 return (error); 1098 } 1099 1100 /* 1101 * nfs make dir call 1102 */ 1103 nfs_mkdir(ndp, vap, procp) 1104 register struct nameidata *ndp; 1105 struct vattr *vap; 1106 struct proc *procp; 1107 { 1108 register struct nfsv2_sattr *sp; 1109 register u_long *tl; 1110 register caddr_t cp; 1111 register long t1, t2; 1112 register int len; 1113 caddr_t bpos, dpos, cp2; 1114 int error = 0, firsttry = 1; 1115 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1116 1117 len = ndp->ni_namelen; 1118 nfsstats.rpccnt[NFSPROC_MKDIR]++; 1119 nfsm_reqhead(ndp->ni_dvp, NFSPROC_MKDIR, 1120 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)+NFSX_SATTR); 1121 nfsm_fhtom(ndp->ni_dvp); 1122 nfsm_strtom(ndp->ni_ptr, len, NFS_MAXNAMLEN); 1123 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR); 1124 sp->sa_mode = vtonfs_mode(VDIR, vap->va_mode); 1125 sp->sa_uid = txdr_unsigned(ndp->ni_cred->cr_uid); 1126 sp->sa_gid = txdr_unsigned(ndp->ni_cred->cr_gid); 1127 sp->sa_size = txdr_unsigned(VNOVAL); 1128 txdr_time(&vap->va_atime, &sp->sa_atime); /* or VNOVAL ?? */ 1129 txdr_time(&vap->va_mtime, &sp->sa_mtime); /* or VNOVAL ?? */ 1130 nfsm_request(ndp->ni_dvp, NFSPROC_MKDIR, procp, ndp->ni_cred); 1131 nfsm_mtofh(ndp->ni_dvp, ndp->ni_vp); 1132 nfsm_reqdone; 1133 VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; 1134 /* 1135 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry 1136 * if we can succeed in looking up the directory. 1137 * "firsttry" is necessary since the macros may "goto nfsmout" which 1138 * is above the if on errors. (Ugh) 1139 */ 1140 if (error == EEXIST && firsttry) { 1141 firsttry = 0; 1142 error = 0; 1143 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 1144 ndp->ni_vp = NULL; 1145 nfsm_reqhead(ndp->ni_dvp, NFSPROC_LOOKUP, 1146 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 1147 nfsm_fhtom(ndp->ni_dvp); 1148 nfsm_strtom(ndp->ni_ptr, len, NFS_MAXNAMLEN); 1149 nfsm_request(ndp->ni_dvp, NFSPROC_LOOKUP, procp, ndp->ni_cred); 1150 nfsm_mtofh(ndp->ni_dvp, ndp->ni_vp); 1151 if (ndp->ni_vp->v_type != VDIR) { 1152 vput(ndp->ni_vp); 1153 error = EEXIST; 1154 } 1155 m_freem(mrep); 1156 } 1157 FREE(ndp->ni_pnbuf, M_NAMEI); 1158 vrele(ndp->ni_dvp); 1159 return (error); 1160 } 1161 1162 /* 1163 * nfs remove directory call 1164 */ 1165 nfs_rmdir(ndp, procp) 1166 register struct nameidata *ndp; 1167 struct proc *procp; 1168 { 1169 register u_long *tl; 1170 register caddr_t cp; 1171 register long t2; 1172 caddr_t bpos, dpos; 1173 int error = 0; 1174 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1175 1176 if (ndp->ni_dvp == ndp->ni_vp) { 1177 vrele(ndp->ni_dvp); 1178 vrele(ndp->ni_dvp); 1179 FREE(ndp->ni_pnbuf, M_NAMEI); 1180 return (EINVAL); 1181 } 1182 nfsstats.rpccnt[NFSPROC_RMDIR]++; 1183 nfsm_reqhead(ndp->ni_dvp, NFSPROC_RMDIR, 1184 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(ndp->ni_namelen)); 1185 nfsm_fhtom(ndp->ni_dvp); 1186 nfsm_strtom(ndp->ni_ptr, ndp->ni_namelen, NFS_MAXNAMLEN); 1187 nfsm_request(ndp->ni_dvp, NFSPROC_RMDIR, procp, ndp->ni_cred); 1188 nfsm_reqdone; 1189 FREE(ndp->ni_pnbuf, M_NAMEI); 1190 VTONFS(ndp->ni_dvp)->n_flag |= NMODIFIED; 1191 cache_purge(ndp->ni_dvp); 1192 cache_purge(ndp->ni_vp); 1193 vrele(ndp->ni_vp); 1194 vrele(ndp->ni_dvp); 1195 /* 1196 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 1197 */ 1198 if (error == ENOENT) 1199 error = 0; 1200 return (error); 1201 } 1202 1203 /* 1204 * nfs readdir call 1205 * Although cookie is defined as opaque, I translate it to/from net byte 1206 * order so that it looks more sensible. This appears consistent with the 1207 * Ultrix implementation of NFS. 1208 */ 1209 nfs_readdir(vp, uiop, cred, eofflagp) 1210 register struct vnode *vp; 1211 struct uio *uiop; 1212 struct ucred *cred; 1213 int *eofflagp; 1214 { 1215 register struct nfsnode *np = VTONFS(vp); 1216 int tresid, error; 1217 struct vattr vattr; 1218 1219 if (vp->v_type != VDIR) 1220 return (EPERM); 1221 /* 1222 * First, check for hit on the EOF offset cache 1223 */ 1224 if (uiop->uio_offset != 0 && uiop->uio_offset == np->n_direofoffset && 1225 (np->n_flag & NMODIFIED) == 0) { 1226 if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) { 1227 if (NQNFS_CKCACHABLE(vp, NQL_READ)) { 1228 *eofflagp = 1; 1229 nfsstats.direofcache_hits++; 1230 return (0); 1231 } 1232 } else if (nfs_getattr(vp, &vattr, cred, uiop->uio_procp) == 0 && 1233 np->n_mtime == vattr.va_mtime.tv_sec) { 1234 *eofflagp = 1; 1235 nfsstats.direofcache_hits++; 1236 return (0); 1237 } 1238 } 1239 1240 /* 1241 * Call nfs_bioread() to do the real work. 1242 */ 1243 tresid = uiop->uio_resid; 1244 error = nfs_bioread(vp, uiop, 0, cred); 1245 1246 if (!error && uiop->uio_resid == tresid) { 1247 *eofflagp = 1; 1248 nfsstats.direofcache_misses++; 1249 } else 1250 *eofflagp = 0; 1251 return (error); 1252 } 1253 1254 /* 1255 * Readdir rpc call. 1256 * Called from below the buffer cache by nfs_doio(). 1257 */ 1258 nfs_readdirrpc(vp, uiop, cred) 1259 register struct vnode *vp; 1260 struct uio *uiop; 1261 struct ucred *cred; 1262 { 1263 register long len; 1264 register struct direct *dp; 1265 register u_long *tl; 1266 register caddr_t cp; 1267 register long t1; 1268 long tlen, lastlen; 1269 caddr_t bpos, dpos, cp2; 1270 int error = 0; 1271 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1272 struct mbuf *md2; 1273 caddr_t dpos2; 1274 int siz; 1275 int more_dirs = 1; 1276 off_t off, savoff; 1277 struct direct *savdp; 1278 struct nfsmount *nmp; 1279 struct nfsnode *np = VTONFS(vp); 1280 long tresid; 1281 1282 nmp = VFSTONFS(vp->v_mount); 1283 tresid = uiop->uio_resid; 1284 /* 1285 * Loop around doing readdir rpc's of size uio_resid or nm_rsize, 1286 * whichever is smaller, truncated to a multiple of NFS_DIRBLKSIZ. 1287 * The stopping criteria is EOF or buffer full. 1288 */ 1289 while (more_dirs && uiop->uio_resid >= NFS_DIRBLKSIZ) { 1290 nfsstats.rpccnt[NFSPROC_READDIR]++; 1291 nfsm_reqhead(vp, NFSPROC_READDIR, 1292 NFSX_FH+2*NFSX_UNSIGNED); 1293 nfsm_fhtom(vp); 1294 nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); 1295 *tl++ = txdr_unsigned(uiop->uio_offset); 1296 *tl = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ? 1297 nmp->nm_rsize : uiop->uio_resid) & ~(NFS_DIRBLKSIZ-1)); 1298 nfsm_request(vp, NFSPROC_READDIR, uiop->uio_procp, cred); 1299 siz = 0; 1300 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1301 more_dirs = fxdr_unsigned(int, *tl); 1302 1303 /* Save the position so that we can do nfsm_mtouio() later */ 1304 dpos2 = dpos; 1305 md2 = md; 1306 1307 /* loop thru the dir entries, doctoring them to 4bsd form */ 1308 off = uiop->uio_offset; 1309 #ifdef lint 1310 dp = (struct direct *)0; 1311 #endif /* lint */ 1312 while (more_dirs && siz < uiop->uio_resid) { 1313 savoff = off; /* Hold onto offset and dp */ 1314 savdp = dp; 1315 nfsm_dissecton(tl, u_long *, 2*NFSX_UNSIGNED); 1316 dp = (struct direct *)tl; 1317 dp->d_ino = fxdr_unsigned(u_long, *tl++); 1318 len = fxdr_unsigned(int, *tl); 1319 if (len <= 0 || len > NFS_MAXNAMLEN) { 1320 error = EBADRPC; 1321 m_freem(mrep); 1322 goto nfsmout; 1323 } 1324 dp->d_namlen = (u_short)len; 1325 nfsm_adv(len); /* Point past name */ 1326 tlen = nfsm_rndup(len); 1327 /* 1328 * This should not be necessary, but some servers have 1329 * broken XDR such that these bytes are not null filled. 1330 */ 1331 if (tlen != len) { 1332 *dpos = '\0'; /* Null-terminate */ 1333 nfsm_adv(tlen - len); 1334 len = tlen; 1335 } 1336 nfsm_dissecton(tl, u_long *, 2*NFSX_UNSIGNED); 1337 off = fxdr_unsigned(off_t, *tl); 1338 *tl++ = 0; /* Ensures null termination of name */ 1339 more_dirs = fxdr_unsigned(int, *tl); 1340 dp->d_reclen = len+4*NFSX_UNSIGNED; 1341 siz += dp->d_reclen; 1342 } 1343 /* 1344 * If at end of rpc data, get the eof boolean 1345 */ 1346 if (!more_dirs) { 1347 nfsm_dissecton(tl, u_long *, NFSX_UNSIGNED); 1348 more_dirs = (fxdr_unsigned(int, *tl) == 0); 1349 1350 /* 1351 * If at EOF, cache directory offset 1352 */ 1353 if (!more_dirs) 1354 np->n_direofoffset = off; 1355 } 1356 /* 1357 * If there is too much to fit in the data buffer, use savoff and 1358 * savdp to trim off the last record. 1359 * --> we are not at eof 1360 */ 1361 if (siz > uiop->uio_resid) { 1362 off = savoff; 1363 siz -= dp->d_reclen; 1364 dp = savdp; 1365 more_dirs = 0; /* Paranoia */ 1366 } 1367 if (siz > 0) { 1368 lastlen = dp->d_reclen; 1369 md = md2; 1370 dpos = dpos2; 1371 nfsm_mtouio(uiop, siz); 1372 uiop->uio_offset = off; 1373 } else 1374 more_dirs = 0; /* Ugh, never happens, but in case.. */ 1375 m_freem(mrep); 1376 } 1377 /* 1378 * Fill last record, iff any, out to a multiple of NFS_DIRBLKSIZ 1379 * by increasing d_reclen for the last record. 1380 */ 1381 if (uiop->uio_resid < tresid) { 1382 len = uiop->uio_resid & (NFS_DIRBLKSIZ - 1); 1383 if (len > 0) { 1384 dp = (struct direct *) 1385 (uiop->uio_iov->iov_base - lastlen); 1386 dp->d_reclen += len; 1387 uiop->uio_iov->iov_base += len; 1388 uiop->uio_iov->iov_len -= len; 1389 uiop->uio_resid -= len; 1390 } 1391 } 1392 nfsmout: 1393 return (error); 1394 } 1395 1396 /* 1397 * Nqnfs readdir_and_lookup RPC. Used in place of nfs_readdirrpc() when 1398 * the "rdirlook" mount option is specified. 1399 */ 1400 nfs_readdirlookrpc(vp, uiop, cred) 1401 struct vnode *vp; 1402 register struct uio *uiop; 1403 struct ucred *cred; 1404 { 1405 register int len; 1406 register struct direct *dp; 1407 register u_long *tl; 1408 register caddr_t cp; 1409 register long t1; 1410 caddr_t bpos, dpos, cp2; 1411 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1412 struct nameidata nami, *ndp = &nami; 1413 off_t off, endoff; 1414 time_t reqtime, ltime; 1415 struct nfsmount *nmp; 1416 struct nfsnode *np, *tp; 1417 struct vnode *newvp; 1418 nfsv2fh_t *fhp; 1419 u_long fileno; 1420 u_quad_t frev; 1421 int error = 0, tlen, more_dirs = 1, tresid, doit, bigenough, i; 1422 int cachable; 1423 1424 if (uiop->uio_iovcnt != 1) 1425 panic("nfs rdirlook"); 1426 nmp = VFSTONFS(vp->v_mount); 1427 tresid = uiop->uio_resid; 1428 ndp->ni_dvp = vp; 1429 newvp = NULLVP; 1430 /* 1431 * Loop around doing readdir rpc's of size uio_resid or nm_rsize, 1432 * whichever is smaller, truncated to a multiple of NFS_DIRBLKSIZ. 1433 * The stopping criteria is EOF or buffer full. 1434 */ 1435 while (more_dirs && uiop->uio_resid >= NFS_DIRBLKSIZ) { 1436 nfsstats.rpccnt[NQNFSPROC_READDIRLOOK]++; 1437 nfsm_reqhead(vp, NQNFSPROC_READDIRLOOK, 1438 NFSX_FH+3*NFSX_UNSIGNED); 1439 nfsm_fhtom(vp); 1440 nfsm_build(tl, u_long *, 3*NFSX_UNSIGNED); 1441 *tl++ = txdr_unsigned(uiop->uio_offset); 1442 *tl++ = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ? 1443 nmp->nm_rsize : uiop->uio_resid) & ~(NFS_DIRBLKSIZ-1)); 1444 *tl = txdr_unsigned(nmp->nm_leaseterm); 1445 reqtime = time.tv_sec; 1446 nfsm_request(vp, NQNFSPROC_READDIRLOOK, uiop->uio_procp, cred); 1447 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1448 more_dirs = fxdr_unsigned(int, *tl); 1449 1450 /* loop thru the dir entries, doctoring them to 4bsd form */ 1451 off = uiop->uio_offset; 1452 bigenough = 1; 1453 while (more_dirs && bigenough) { 1454 doit = 1; 1455 nfsm_dissect(tl, u_long *, 4*NFSX_UNSIGNED); 1456 cachable = fxdr_unsigned(int, *tl++); 1457 ltime = reqtime + fxdr_unsigned(int, *tl++); 1458 fxdr_hyper(tl, &frev); 1459 nfsm_dissect(fhp, nfsv2fh_t *, NFSX_FH); 1460 if (!bcmp(VTONFS(vp)->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 1461 VREF(vp); 1462 newvp = vp; 1463 np = VTONFS(vp); 1464 } else { 1465 if (error = nfs_nget(vp->v_mount, fhp, &np)) 1466 doit = 0; 1467 newvp = NFSTOV(np); 1468 } 1469 if (error = nfs_loadattrcache(&newvp, &md, &dpos, 1470 (struct vattr *)0)) 1471 doit = 0; 1472 nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED); 1473 fileno = fxdr_unsigned(u_long, *tl++); 1474 len = fxdr_unsigned(int, *tl); 1475 if (len <= 0 || len > NFS_MAXNAMLEN) { 1476 error = EBADRPC; 1477 m_freem(mrep); 1478 goto nfsmout; 1479 } 1480 tlen = (len + 4) & ~0x3; 1481 if ((tlen + DIRHDSIZ) > uiop->uio_resid) 1482 bigenough = 0; 1483 if (bigenough && doit) { 1484 dp = (struct direct *)uiop->uio_iov->iov_base; 1485 dp->d_ino = fileno; 1486 dp->d_namlen = len; 1487 dp->d_reclen = tlen + DIRHDSIZ; 1488 uiop->uio_resid -= DIRHDSIZ; 1489 uiop->uio_iov->iov_base += DIRHDSIZ; 1490 uiop->uio_iov->iov_len -= DIRHDSIZ; 1491 ndp->ni_ptr = uiop->uio_iov->iov_base; 1492 ndp->ni_namelen = len; 1493 ndp->ni_vp = newvp; 1494 nfsm_mtouio(uiop, len); 1495 cp = uiop->uio_iov->iov_base; 1496 tlen -= len; 1497 for (i = 0; i < tlen; i++) 1498 *cp++ = '\0'; 1499 uiop->uio_iov->iov_base += tlen; 1500 uiop->uio_iov->iov_len -= tlen; 1501 uiop->uio_resid -= tlen; 1502 ndp->ni_hash = 0; 1503 for (cp = ndp->ni_ptr, i = 1; i <= len; i++, cp++) 1504 ndp->ni_hash += (unsigned char)*cp * i; 1505 if (ltime > time.tv_sec) { 1506 if (np->n_tnext) { 1507 if (np->n_tnext == (struct nfsnode *)nmp) 1508 nmp->nm_tprev = np->n_tprev; 1509 else 1510 np->n_tnext->n_tprev = np->n_tprev; 1511 if (np->n_tprev == (struct nfsnode *)nmp) 1512 nmp->nm_tnext = np->n_tnext; 1513 else 1514 np->n_tprev->n_tnext = np->n_tnext; 1515 } else 1516 np->n_flag &= ~NQNFSWRITE; 1517 if (cachable) 1518 np->n_flag &= ~NQNFSNONCACHE; 1519 else 1520 np->n_flag |= NQNFSNONCACHE; 1521 np->n_expiry = ltime; 1522 np->n_lrev = frev; 1523 tp = nmp->nm_tprev; 1524 while (tp != (struct nfsnode *)nmp && tp->n_expiry > np->n_expiry) 1525 tp = tp->n_tprev; 1526 if (tp == (struct nfsnode *)nmp) { 1527 np->n_tnext = nmp->nm_tnext; 1528 nmp->nm_tnext = np; 1529 } else { 1530 np->n_tnext = tp->n_tnext; 1531 tp->n_tnext = np; 1532 } 1533 np->n_tprev = tp; 1534 if (np->n_tnext == (struct nfsnode *)nmp) 1535 nmp->nm_tprev = np; 1536 else 1537 np->n_tnext->n_tprev = np; 1538 cache_enter(ndp); 1539 } 1540 } else { 1541 nfsm_adv(nfsm_rndup(len)); 1542 } 1543 if (newvp != NULLVP) { 1544 vrele(newvp); 1545 newvp = NULLVP; 1546 } 1547 nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED); 1548 if (bigenough) 1549 endoff = off = fxdr_unsigned(off_t, *tl++); 1550 else 1551 endoff = fxdr_unsigned(off_t, *tl++); 1552 more_dirs = fxdr_unsigned(int, *tl); 1553 } 1554 /* 1555 * If at end of rpc data, get the eof boolean 1556 */ 1557 if (!more_dirs) { 1558 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1559 more_dirs = (fxdr_unsigned(int, *tl) == 0); 1560 1561 /* 1562 * If at EOF, cache directory offset 1563 */ 1564 if (!more_dirs) 1565 VTONFS(vp)->n_direofoffset = endoff; 1566 } 1567 if (uiop->uio_resid < tresid) 1568 uiop->uio_offset = off; 1569 else 1570 more_dirs = 0; 1571 m_freem(mrep); 1572 } 1573 /* 1574 * Fill last record, iff any, out to a multiple of NFS_DIRBLKSIZ 1575 * by increasing d_reclen for the last record. 1576 */ 1577 if (uiop->uio_resid < tresid) { 1578 len = uiop->uio_resid & (NFS_DIRBLKSIZ - 1); 1579 if (len > 0) { 1580 dp->d_reclen += len; 1581 uiop->uio_iov->iov_base += len; 1582 uiop->uio_iov->iov_len -= len; 1583 uiop->uio_resid -= len; 1584 } 1585 } 1586 nfsmout: 1587 if (newvp != NULLVP) 1588 vrele(newvp); 1589 return (error); 1590 } 1591 static char hextoasc[] = "0123456789abcdef"; 1592 1593 /* 1594 * Silly rename. To make the NFS filesystem that is stateless look a little 1595 * more like the "ufs" a remove of an active vnode is translated to a rename 1596 * to a funny looking filename that is removed by nfs_inactive on the 1597 * nfsnode. There is the potential for another process on a different client 1598 * to create the same funny name between the nfs_lookitup() fails and the 1599 * nfs_rename() completes, but... 1600 */ 1601 nfs_sillyrename(ndp, p) 1602 register struct nameidata *ndp; 1603 struct proc *p; 1604 { 1605 register struct nfsnode *np; 1606 register struct sillyrename *sp; 1607 int error; 1608 short pid; 1609 1610 cache_purge(ndp->ni_dvp); 1611 np = VTONFS(ndp->ni_vp); 1612 #ifdef SILLYSEPARATE 1613 MALLOC(sp, struct sillyrename *, sizeof (struct sillyrename), 1614 M_NFSREQ, M_WAITOK); 1615 #else 1616 sp = &np->n_silly; 1617 #endif 1618 sp->s_cred = crdup(ndp->ni_cred); 1619 sp->s_dvp = ndp->ni_dvp; 1620 VREF(sp->s_dvp); 1621 1622 /* Fudge together a funny name */ 1623 pid = p->p_pid; 1624 bcopy(".nfsAxxxx4.4", sp->s_name, 13); 1625 sp->s_namlen = 12; 1626 sp->s_name[8] = hextoasc[pid & 0xf]; 1627 sp->s_name[7] = hextoasc[(pid >> 4) & 0xf]; 1628 sp->s_name[6] = hextoasc[(pid >> 8) & 0xf]; 1629 sp->s_name[5] = hextoasc[(pid >> 12) & 0xf]; 1630 1631 /* Try lookitups until we get one that isn't there */ 1632 while (nfs_lookitup(sp, (nfsv2fh_t *)0, p) == 0) { 1633 sp->s_name[4]++; 1634 if (sp->s_name[4] > 'z') { 1635 error = EINVAL; 1636 goto bad; 1637 } 1638 } 1639 if (error = nfs_renameit(ndp, sp, p)) 1640 goto bad; 1641 nfs_lookitup(sp, &np->n_fh, p); 1642 np->n_sillyrename = sp; 1643 return (0); 1644 bad: 1645 vrele(sp->s_dvp); 1646 crfree(sp->s_cred); 1647 #ifdef SILLYSEPARATE 1648 free((caddr_t)sp, M_NFSREQ); 1649 #endif 1650 return (error); 1651 } 1652 1653 /* 1654 * Look up a file name for silly rename stuff. 1655 * Just like nfs_lookup() except that it doesn't load returned values 1656 * into the nfsnode table. 1657 * If fhp != NULL it copies the returned file handle out 1658 */ 1659 nfs_lookitup(sp, fhp, procp) 1660 register struct sillyrename *sp; 1661 nfsv2fh_t *fhp; 1662 struct proc *procp; 1663 { 1664 register struct vnode *vp = sp->s_dvp; 1665 register u_long *tl; 1666 register caddr_t cp; 1667 register long t1, t2; 1668 caddr_t bpos, dpos, cp2; 1669 u_long xid; 1670 int error = 0; 1671 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1672 long len; 1673 1674 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 1675 len = sp->s_namlen; 1676 nfsm_reqhead(vp, NFSPROC_LOOKUP, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 1677 nfsm_fhtom(vp); 1678 nfsm_strtom(sp->s_name, len, NFS_MAXNAMLEN); 1679 nfsm_request(vp, NFSPROC_LOOKUP, procp, sp->s_cred); 1680 if (fhp != NULL) { 1681 nfsm_dissect(cp, caddr_t, NFSX_FH); 1682 bcopy(cp, (caddr_t)fhp, NFSX_FH); 1683 } 1684 nfsm_reqdone; 1685 return (error); 1686 } 1687 1688 /* 1689 * Kludge City.. 1690 * - make nfs_bmap() essentially a no-op that does no translation 1691 * - do nfs_strategy() by faking physical I/O with nfs_readrpc/nfs_writerpc 1692 * after mapping the physical addresses into Kernel Virtual space in the 1693 * nfsiobuf area. 1694 * (Maybe I could use the process's page mapping, but I was concerned that 1695 * Kernel Write might not be enabled and also figured copyout() would do 1696 * a lot more work than bcopy() and also it currently happens in the 1697 * context of the swapper process (2). 1698 */ 1699 nfs_bmap(vp, bn, vpp, bnp) 1700 struct vnode *vp; 1701 daddr_t bn; 1702 struct vnode **vpp; 1703 daddr_t *bnp; 1704 { 1705 if (vpp != NULL) 1706 *vpp = vp; 1707 if (bnp != NULL) 1708 *bnp = bn * btodb(vp->v_mount->mnt_stat.f_iosize); 1709 return (0); 1710 } 1711 1712 /* 1713 * Strategy routine for phys. i/o 1714 * If the biod's are running, queue a request 1715 * otherwise just call nfs_doio() to get it done 1716 */ 1717 nfs_strategy(bp) 1718 register struct buf *bp; 1719 { 1720 register struct buf *dp; 1721 register int i; 1722 int error = 0; 1723 int fnd = 0; 1724 1725 /* 1726 * Set b_proc. It seems a bit silly to do it here, but since bread() 1727 * doesn't set it, I will. 1728 * Set b_proc == NULL for asynchronous ops, since these may still 1729 * be hanging about after the process terminates. 1730 */ 1731 if ((bp->b_flags & B_PHYS) == 0) { 1732 if (bp->b_flags & B_ASYNC) 1733 bp->b_proc = (struct proc *)0; 1734 else 1735 bp->b_proc = curproc; 1736 } 1737 /* 1738 * If the op is asynchronous and an i/o daemon is waiting 1739 * queue the request, wake it up and wait for completion 1740 * otherwise just do it ourselves. 1741 */ 1742 if ((bp->b_flags & B_ASYNC) == 0 || nfs_numasync == 0) 1743 return (nfs_doio(bp)); 1744 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) { 1745 if (nfs_iodwant[i]) { 1746 dp = &nfs_bqueue; 1747 if (dp->b_actf == NULL) { 1748 dp->b_actl = bp; 1749 bp->b_actf = dp; 1750 } else { 1751 dp->b_actf->b_actl = bp; 1752 bp->b_actf = dp->b_actf; 1753 } 1754 dp->b_actf = bp; 1755 bp->b_actl = dp; 1756 fnd++; 1757 wakeup((caddr_t)&nfs_iodwant[i]); 1758 break; 1759 } 1760 } 1761 if (!fnd) 1762 error = nfs_doio(bp); 1763 return (error); 1764 } 1765 1766 /* 1767 * Fun and games with i/o 1768 * Essentially play ubasetup() and disk interrupt service routine by 1769 * mapping the data buffer into kernel virtual space and doing the 1770 * nfs read or write rpc's from it. 1771 * If the nfsiod's are not running, this is just called from nfs_strategy(), 1772 * otherwise it is called by the nfsiods to do what would normally be 1773 * partially disk interrupt driven. 1774 */ 1775 nfs_doio(bp) 1776 register struct buf *bp; 1777 { 1778 register struct uio *uiop; 1779 register struct vnode *vp; 1780 struct nfsnode *np; 1781 struct ucred *cr; 1782 int error; 1783 struct uio uio; 1784 struct iovec io; 1785 1786 vp = bp->b_vp; 1787 np = VTONFS(vp); 1788 uiop = &uio; 1789 uiop->uio_iov = &io; 1790 uiop->uio_iovcnt = 1; 1791 uiop->uio_segflg = UIO_SYSSPACE; 1792 uiop->uio_procp = bp->b_proc; 1793 1794 /* 1795 * For phys i/o, map the b_addr into kernel virtual space using 1796 * the Nfsiomap pte's 1797 * Also, add a temporary b_rcred for reading using the process's uid 1798 * and a guess at a group 1799 */ 1800 if (bp->b_flags & B_PHYS) { 1801 if (bp->b_flags & B_DIRTY) 1802 uiop->uio_procp = pageproc; 1803 cr = crcopy(uiop->uio_procp->p_ucred); 1804 /* mapping was already done by vmapbuf */ 1805 io.iov_base = bp->b_un.b_addr; 1806 1807 /* 1808 * And do the i/o rpc 1809 */ 1810 io.iov_len = uiop->uio_resid = bp->b_bcount; 1811 uiop->uio_offset = bp->b_blkno * DEV_BSIZE; 1812 if (bp->b_flags & B_READ) { 1813 uiop->uio_rw = UIO_READ; 1814 nfsstats.read_physios++; 1815 bp->b_error = error = nfs_readrpc(vp, uiop, cr); 1816 (void) vnode_pager_uncache(vp); 1817 } else { 1818 uiop->uio_rw = UIO_WRITE; 1819 nfsstats.write_physios++; 1820 bp->b_error = error = nfs_writerpc(vp, uiop, cr); 1821 } 1822 1823 /* 1824 * Finally, release pte's used by physical i/o 1825 */ 1826 crfree(cr); 1827 } else { 1828 if (bp->b_flags & B_READ) { 1829 io.iov_len = uiop->uio_resid = bp->b_bcount; 1830 io.iov_base = bp->b_un.b_addr; 1831 uiop->uio_rw = UIO_READ; 1832 switch (vp->v_type) { 1833 case VREG: 1834 uiop->uio_offset = bp->b_blkno * DEV_BSIZE; 1835 nfsstats.read_bios++; 1836 error = nfs_readrpc(vp, uiop, bp->b_rcred); 1837 break; 1838 case VLNK: 1839 uiop->uio_offset = 0; 1840 nfsstats.readlink_bios++; 1841 error = nfs_readlinkrpc(vp, uiop, bp->b_rcred); 1842 break; 1843 case VDIR: 1844 uiop->uio_offset = bp->b_lblkno; 1845 nfsstats.readdir_bios++; 1846 if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_RDIRALOOK) 1847 error = nfs_readdirlookrpc(vp, uiop, bp->b_rcred); 1848 else 1849 error = nfs_readdirrpc(vp, uiop, bp->b_rcred); 1850 /* 1851 * Save offset cookie in b_blkno. 1852 */ 1853 bp->b_blkno = uiop->uio_offset; 1854 break; 1855 }; 1856 bp->b_error = error; 1857 } else { 1858 io.iov_len = uiop->uio_resid = bp->b_dirtyend 1859 - bp->b_dirtyoff; 1860 uiop->uio_offset = (bp->b_blkno * DEV_BSIZE) 1861 + bp->b_dirtyoff; 1862 io.iov_base = bp->b_un.b_addr + bp->b_dirtyoff; 1863 uiop->uio_rw = UIO_WRITE; 1864 nfsstats.write_bios++; 1865 bp->b_error = error = nfs_writerpc(vp, uiop, 1866 bp->b_wcred); 1867 if (error) { 1868 np->n_error = error; 1869 np->n_flag |= NWRITEERR; 1870 } 1871 bp->b_dirtyoff = bp->b_dirtyend = 0; 1872 } 1873 } 1874 if (error) 1875 bp->b_flags |= B_ERROR; 1876 bp->b_resid = uiop->uio_resid; 1877 biodone(bp); 1878 return (error); 1879 } 1880 1881 /* 1882 * Mmap a file 1883 * 1884 * NB Currently unsupported. 1885 */ 1886 /* ARGSUSED */ 1887 nfs_mmap(vp, fflags, cred, p) 1888 struct vnode *vp; 1889 int fflags; 1890 struct ucred *cred; 1891 struct proc *p; 1892 { 1893 1894 return (EINVAL); 1895 } 1896 1897 /* 1898 * Flush all the blocks associated with a vnode. 1899 * Walk through the buffer pool and push any dirty pages 1900 * associated with the vnode. 1901 */ 1902 /* ARGSUSED */ 1903 nfs_fsync(vp, fflags, cred, waitfor, p) 1904 register struct vnode *vp; 1905 int fflags; 1906 struct ucred *cred; 1907 int waitfor; 1908 struct proc *p; 1909 { 1910 register struct nfsnode *np = VTONFS(vp); 1911 int error = 0; 1912 1913 if (np->n_flag & NMODIFIED) { 1914 np->n_flag &= ~NMODIFIED; 1915 vflushbuf(vp, waitfor == MNT_WAIT ? B_SYNC : 0); 1916 } 1917 if (!error && (np->n_flag & NWRITEERR)) 1918 error = np->n_error; 1919 return (error); 1920 } 1921 1922 /* 1923 * NFS advisory byte-level locks. 1924 * Currently unsupported. 1925 */ 1926 nfs_advlock(vp, id, op, fl, flags) 1927 struct vnode *vp; 1928 caddr_t id; 1929 int op; 1930 struct flock *fl; 1931 int flags; 1932 { 1933 1934 return (EOPNOTSUPP); 1935 } 1936 1937 /* 1938 * Print out the contents of an nfsnode. 1939 */ 1940 nfs_print(vp) 1941 struct vnode *vp; 1942 { 1943 register struct nfsnode *np = VTONFS(vp); 1944 1945 printf("tag VT_NFS, fileid %d fsid 0x%x", 1946 np->n_vattr.va_fileid, np->n_vattr.va_fsid); 1947 #ifdef FIFO 1948 if (vp->v_type == VFIFO) 1949 fifo_printinfo(vp); 1950 #endif /* FIFO */ 1951 printf("\n"); 1952 } 1953 1954 /* 1955 * NFS directory offset lookup. 1956 * Currently unsupported. 1957 */ 1958 nfs_blkatoff(vp, offset, res, bpp) 1959 struct vnode *vp; 1960 off_t offset; 1961 char **res; 1962 struct buf **bpp; 1963 { 1964 1965 return (EOPNOTSUPP); 1966 } 1967 1968 /* 1969 * NFS flat namespace lookup. 1970 * Currently unsupported. 1971 */ 1972 nfs_vget(mp, ino, vpp) 1973 struct mount *mp; 1974 ino_t ino; 1975 struct vnode **vpp; 1976 { 1977 1978 return (EOPNOTSUPP); 1979 } 1980 1981 /* 1982 * NFS flat namespace allocation. 1983 * Currently unsupported. 1984 */ 1985 nfs_valloc(pvp, mode, cred, vpp) 1986 struct vnode *pvp; 1987 int mode; 1988 struct ucred *cred; 1989 struct vnode **vpp; 1990 { 1991 1992 return (EOPNOTSUPP); 1993 } 1994 1995 /* 1996 * NFS flat namespace free. 1997 * Currently unsupported. 1998 */ 1999 void 2000 nfs_vfree(pvp, ino, mode) 2001 struct vnode *pvp; 2002 ino_t ino; 2003 int mode; 2004 { 2005 2006 return; 2007 } 2008 2009 /* 2010 * NFS file truncation. 2011 */ 2012 nfs_truncate(vp, length, flags) 2013 struct vnode *vp; 2014 u_long length; 2015 int flags; 2016 { 2017 2018 /* Use nfs_setattr */ 2019 printf("nfs_truncate: need to implement!!"); 2020 return (EOPNOTSUPP); 2021 } 2022 2023 /* 2024 * NFS update. 2025 */ 2026 nfs_update(vp, ta, tm, waitfor) 2027 struct vnode *vp; 2028 struct timeval *ta; 2029 struct timeval *tm; 2030 int waitfor; 2031 { 2032 2033 /* Use nfs_setattr */ 2034 printf("nfs_update: need to implement!!"); 2035 return (EOPNOTSUPP); 2036 } 2037