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 7.99 (Berkeley) 11/01/92 11 */ 12 13 /* 14 * vnode op calls for sun nfs version 2 15 */ 16 17 #include <sys/param.h> 18 #include <sys/proc.h> 19 #include <sys/kernel.h> 20 #include <sys/systm.h> 21 #include <sys/mount.h> 22 #include <sys/buf.h> 23 #include <sys/malloc.h> 24 #include <sys/mbuf.h> 25 #include <sys/conf.h> 26 #include <sys/namei.h> 27 #include <sys/vnode.h> 28 #include <sys/map.h> 29 #include <sys/dirent.h> 30 31 #include <vm/vm.h> 32 33 #include <miscfs/specfs/specdev.h> 34 #include <miscfs/fifofs/fifo.h> 35 36 #include <nfs/rpcv2.h> 37 #include <nfs/nfsv2.h> 38 #include <nfs/nfs.h> 39 #include <nfs/nfsnode.h> 40 #include <nfs/nfsmount.h> 41 #include <nfs/xdr_subs.h> 42 #include <nfs/nfsm_subs.h> 43 #include <nfs/nqnfs.h> 44 45 /* Defs */ 46 #define TRUE 1 47 #define FALSE 0 48 49 /* 50 * Global vfs data structures for nfs 51 */ 52 int (**nfsv2_vnodeop_p)(); 53 struct vnodeopv_entry_desc nfsv2_vnodeop_entries[] = { 54 { &vop_default_desc, vn_default_error }, 55 { &vop_lookup_desc, nfs_lookup }, /* lookup */ 56 { &vop_create_desc, nfs_create }, /* create */ 57 { &vop_mknod_desc, nfs_mknod }, /* mknod */ 58 { &vop_open_desc, nfs_open }, /* open */ 59 { &vop_close_desc, nfs_close }, /* close */ 60 { &vop_access_desc, nfs_access }, /* access */ 61 { &vop_getattr_desc, nfs_getattr }, /* getattr */ 62 { &vop_setattr_desc, nfs_setattr }, /* setattr */ 63 { &vop_read_desc, nfs_read }, /* read */ 64 { &vop_write_desc, nfs_write }, /* write */ 65 { &vop_ioctl_desc, nfs_ioctl }, /* ioctl */ 66 { &vop_select_desc, nfs_select }, /* select */ 67 { &vop_mmap_desc, nfs_mmap }, /* mmap */ 68 { &vop_fsync_desc, nfs_fsync }, /* fsync */ 69 { &vop_seek_desc, nfs_seek }, /* seek */ 70 { &vop_remove_desc, nfs_remove }, /* remove */ 71 { &vop_link_desc, nfs_link }, /* link */ 72 { &vop_rename_desc, nfs_rename }, /* rename */ 73 { &vop_mkdir_desc, nfs_mkdir }, /* mkdir */ 74 { &vop_rmdir_desc, nfs_rmdir }, /* rmdir */ 75 { &vop_symlink_desc, nfs_symlink }, /* symlink */ 76 { &vop_readdir_desc, nfs_readdir }, /* readdir */ 77 { &vop_readlink_desc, nfs_readlink }, /* readlink */ 78 { &vop_abortop_desc, nfs_abortop }, /* abortop */ 79 { &vop_inactive_desc, nfs_inactive }, /* inactive */ 80 { &vop_reclaim_desc, nfs_reclaim }, /* reclaim */ 81 { &vop_lock_desc, nfs_lock }, /* lock */ 82 { &vop_unlock_desc, nfs_unlock }, /* unlock */ 83 { &vop_bmap_desc, nfs_bmap }, /* bmap */ 84 { &vop_strategy_desc, nfs_strategy }, /* strategy */ 85 { &vop_print_desc, nfs_print }, /* print */ 86 { &vop_islocked_desc, nfs_islocked }, /* islocked */ 87 { &vop_advlock_desc, nfs_advlock }, /* advlock */ 88 { &vop_blkatoff_desc, nfs_blkatoff }, /* blkatoff */ 89 { &vop_valloc_desc, nfs_valloc }, /* valloc */ 90 { &vop_vfree_desc, nfs_vfree }, /* vfree */ 91 { &vop_truncate_desc, nfs_truncate }, /* truncate */ 92 { &vop_update_desc, nfs_update }, /* update */ 93 { &vop_bwrite_desc, vn_bwrite }, 94 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 95 }; 96 struct vnodeopv_desc nfsv2_vnodeop_opv_desc = 97 { &nfsv2_vnodeop_p, nfsv2_vnodeop_entries }; 98 99 /* 100 * Special device vnode ops 101 */ 102 int (**spec_nfsv2nodeop_p)(); 103 struct vnodeopv_entry_desc spec_nfsv2nodeop_entries[] = { 104 { &vop_default_desc, vn_default_error }, 105 { &vop_lookup_desc, spec_lookup }, /* lookup */ 106 { &vop_create_desc, spec_create }, /* create */ 107 { &vop_mknod_desc, spec_mknod }, /* mknod */ 108 { &vop_open_desc, spec_open }, /* open */ 109 { &vop_close_desc, nfsspec_close }, /* close */ 110 { &vop_access_desc, nfsspec_access }, /* access */ 111 { &vop_getattr_desc, nfs_getattr }, /* getattr */ 112 { &vop_setattr_desc, nfs_setattr }, /* setattr */ 113 { &vop_read_desc, nfsspec_read }, /* read */ 114 { &vop_write_desc, nfsspec_write }, /* write */ 115 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 116 { &vop_select_desc, spec_select }, /* select */ 117 { &vop_mmap_desc, spec_mmap }, /* mmap */ 118 { &vop_fsync_desc, nfs_fsync }, /* fsync */ 119 { &vop_seek_desc, spec_seek }, /* seek */ 120 { &vop_remove_desc, spec_remove }, /* remove */ 121 { &vop_link_desc, spec_link }, /* link */ 122 { &vop_rename_desc, spec_rename }, /* rename */ 123 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 124 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 125 { &vop_symlink_desc, spec_symlink }, /* symlink */ 126 { &vop_readdir_desc, spec_readdir }, /* readdir */ 127 { &vop_readlink_desc, spec_readlink }, /* readlink */ 128 { &vop_abortop_desc, spec_abortop }, /* abortop */ 129 { &vop_inactive_desc, nfs_inactive }, /* inactive */ 130 { &vop_reclaim_desc, nfs_reclaim }, /* reclaim */ 131 { &vop_lock_desc, nfs_lock }, /* lock */ 132 { &vop_unlock_desc, nfs_unlock }, /* unlock */ 133 { &vop_bmap_desc, spec_bmap }, /* bmap */ 134 { &vop_strategy_desc, spec_strategy }, /* strategy */ 135 { &vop_print_desc, nfs_print }, /* print */ 136 { &vop_islocked_desc, nfs_islocked }, /* islocked */ 137 { &vop_advlock_desc, spec_advlock }, /* advlock */ 138 { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ 139 { &vop_valloc_desc, spec_valloc }, /* valloc */ 140 { &vop_vfree_desc, spec_vfree }, /* vfree */ 141 { &vop_truncate_desc, spec_truncate }, /* truncate */ 142 { &vop_update_desc, nfs_update }, /* update */ 143 { &vop_bwrite_desc, vn_bwrite }, 144 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 145 }; 146 struct vnodeopv_desc spec_nfsv2nodeop_opv_desc = 147 { &spec_nfsv2nodeop_p, spec_nfsv2nodeop_entries }; 148 149 #ifdef FIFO 150 int (**fifo_nfsv2nodeop_p)(); 151 struct vnodeopv_entry_desc fifo_nfsv2nodeop_entries[] = { 152 { &vop_default_desc, vn_default_error }, 153 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 154 { &vop_create_desc, fifo_create }, /* create */ 155 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 156 { &vop_open_desc, fifo_open }, /* open */ 157 { &vop_close_desc, nfsfifo_close }, /* close */ 158 { &vop_access_desc, nfsspec_access }, /* access */ 159 { &vop_getattr_desc, nfs_getattr }, /* getattr */ 160 { &vop_setattr_desc, nfs_setattr }, /* setattr */ 161 { &vop_read_desc, nfsfifo_read }, /* read */ 162 { &vop_write_desc, nfsfifo_write }, /* write */ 163 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 164 { &vop_select_desc, fifo_select }, /* select */ 165 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 166 { &vop_fsync_desc, nfs_fsync }, /* fsync */ 167 { &vop_seek_desc, fifo_seek }, /* seek */ 168 { &vop_remove_desc, fifo_remove }, /* remove */ 169 { &vop_link_desc, fifo_link }, /* link */ 170 { &vop_rename_desc, fifo_rename }, /* rename */ 171 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 172 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 173 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 174 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 175 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 176 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 177 { &vop_inactive_desc, nfs_inactive }, /* inactive */ 178 { &vop_reclaim_desc, nfs_reclaim }, /* reclaim */ 179 { &vop_lock_desc, nfs_lock }, /* lock */ 180 { &vop_unlock_desc, nfs_unlock }, /* unlock */ 181 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 182 { &vop_strategy_desc, fifo_badop }, /* strategy */ 183 { &vop_print_desc, nfs_print }, /* print */ 184 { &vop_islocked_desc, nfs_islocked }, /* islocked */ 185 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 186 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 187 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 188 { &vop_vfree_desc, fifo_vfree }, /* vfree */ 189 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 190 { &vop_update_desc, nfs_update }, /* update */ 191 { &vop_bwrite_desc, vn_bwrite }, 192 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 193 }; 194 struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc = 195 { &fifo_nfsv2nodeop_p, fifo_nfsv2nodeop_entries }; 196 #endif /* FIFO */ 197 198 void nqnfs_clientlease(); 199 200 /* 201 * Global variables 202 */ 203 extern u_long nfs_procids[NFS_NPROCS]; 204 extern u_long nfs_prog, nfs_vers, nfs_true, nfs_false; 205 extern char nfsiobuf[MAXPHYS+NBPG]; 206 struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON]; 207 int nfs_numasync = 0; 208 /* Queue head for nfsiod's */ 209 struct queue_entry nfs_bufq; 210 #define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1)) 211 212 /* 213 * nfs null call from vfs. 214 */ 215 int 216 nfs_null(vp, cred, procp) 217 struct vnode *vp; 218 struct ucred *cred; 219 struct proc *procp; 220 { 221 caddr_t bpos, dpos; 222 int error = 0; 223 struct mbuf *mreq, *mrep, *md, *mb; 224 225 nfsm_reqhead(vp, NFSPROC_NULL, 0); 226 nfsm_request(vp, NFSPROC_NULL, procp, cred); 227 nfsm_reqdone; 228 return (error); 229 } 230 231 /* 232 * nfs access vnode op. 233 * For nfs, just return ok. File accesses may fail later. 234 * For nqnfs, use the access rpc to check accessibility. If file modes are 235 * changed on the server, accesses might still fail later. 236 */ 237 int 238 nfs_access(ap) 239 struct vop_access_args /* { 240 struct vnode *a_vp; 241 int a_mode; 242 struct ucred *a_cred; 243 struct proc *a_p; 244 } */ *ap; 245 { 246 register struct vnode *vp = ap->a_vp; 247 register u_long *tl; 248 register caddr_t cp; 249 caddr_t bpos, dpos; 250 int error = 0; 251 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 252 253 /* 254 * There is no way to check accessibility via. ordinary nfs, so if 255 * access isn't allowed they will get burned later. 256 */ 257 if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) { 258 nfsstats.rpccnt[NQNFSPROC_ACCESS]++; 259 nfsm_reqhead(vp, NQNFSPROC_ACCESS, NFSX_FH + 3 * NFSX_UNSIGNED); 260 nfsm_fhtom(vp); 261 nfsm_build(tl, u_long *, 3 * NFSX_UNSIGNED); 262 if (ap->a_mode & VREAD) 263 *tl++ = nfs_true; 264 else 265 *tl++ = nfs_false; 266 if (ap->a_mode & VWRITE) 267 *tl++ = nfs_true; 268 else 269 *tl++ = nfs_false; 270 if (ap->a_mode & VEXEC) 271 *tl = nfs_true; 272 else 273 *tl = nfs_false; 274 nfsm_request(vp, NQNFSPROC_ACCESS, ap->a_p, ap->a_cred); 275 nfsm_reqdone; 276 return (error); 277 } else 278 return (0); 279 } 280 281 /* 282 * nfs open vnode op 283 * Check to see if the type is ok 284 * and that deletion is not in progress. 285 * For paged in text files, you will need to flush the page cache 286 * if consistency is lost. 287 */ 288 /* ARGSUSED */ 289 int 290 nfs_open(ap) 291 struct vop_open_args /* { 292 struct vnode *a_vp; 293 int a_mode; 294 struct ucred *a_cred; 295 struct proc *a_p; 296 } */ *ap; 297 { 298 register struct vnode *vp = ap->a_vp; 299 struct nfsnode *np = VTONFS(vp); 300 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 301 struct vattr vattr; 302 int error; 303 304 if (vp->v_type != VREG && vp->v_type != VDIR && vp->v_type != VLNK) 305 return (EACCES); 306 if (vp->v_flag & VTEXT) { 307 /* 308 * Get a valid lease. If cached data is stale, flush it. 309 */ 310 if (nmp->nm_flag & NFSMNT_NQNFS) { 311 if (NQNFS_CKINVALID(vp, np, NQL_READ)) { 312 do { 313 error = nqnfs_getlease(vp, NQL_READ, ap->a_cred, ap->a_p); 314 } while (error == NQNFS_EXPIRED); 315 if (error) 316 return (error); 317 if (np->n_lrev != np->n_brev) { 318 NFS_VINVBUF(np, vp, TRUE, ap->a_cred, ap->a_p); 319 (void) vnode_pager_uncache(vp); 320 np->n_brev = np->n_lrev; 321 } 322 } 323 } else { 324 if (np->n_flag & NMODIFIED) { 325 NFS_VINVBUF(np, vp, TRUE, ap->a_cred, ap->a_p); 326 (void) vnode_pager_uncache(vp); 327 np->n_attrstamp = 0; 328 np->n_direofoffset = 0; 329 if (error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p)) 330 return (error); 331 np->n_mtime = vattr.va_mtime.ts_sec; 332 } else { 333 if (error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p)) 334 return (error); 335 if (np->n_mtime != vattr.va_mtime.ts_sec) { 336 np->n_direofoffset = 0; 337 NFS_VINVBUF(np, vp, TRUE, ap->a_cred, ap->a_p); 338 (void) vnode_pager_uncache(vp); 339 np->n_mtime = vattr.va_mtime.ts_sec; 340 } 341 } 342 } 343 } else if ((nmp->nm_flag & NFSMNT_NQNFS) == 0) 344 np->n_attrstamp = 0; /* For Open/Close consistency */ 345 return (0); 346 } 347 348 /* 349 * nfs close vnode op 350 * For reg files, invalidate any buffer cache entries. 351 */ 352 /* ARGSUSED */ 353 int 354 nfs_close(ap) 355 struct vop_close_args /* { 356 struct vnodeop_desc *a_desc; 357 struct vnode *a_vp; 358 int a_fflag; 359 struct ucred *a_cred; 360 struct proc *a_p; 361 } */ *ap; 362 { 363 register struct vnode *vp = ap->a_vp; 364 register struct nfsnode *np = VTONFS(vp); 365 int error = 0; 366 367 if (vp->v_type == VREG) { 368 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) == 0 && 369 (np->n_flag & NMODIFIED)) { 370 NFS_VINVBUFE(np, vp, TRUE, ap->a_cred, ap->a_p, error); 371 np->n_attrstamp = 0; 372 } 373 if (np->n_flag & NWRITEERR) { 374 np->n_flag &= ~NWRITEERR; 375 error = np->n_error; 376 } 377 } 378 return (error); 379 } 380 381 /* 382 * nfs getattr call from vfs. 383 */ 384 int 385 nfs_getattr(ap) 386 struct vop_getattr_args /* { 387 struct vnode *a_vp; 388 struct vattr *a_vap; 389 struct ucred *a_cred; 390 struct proc *a_p; 391 } */ *ap; 392 { 393 register struct vnode *vp = ap->a_vp; 394 register struct nfsnode *np = VTONFS(vp); 395 register caddr_t cp; 396 caddr_t bpos, dpos; 397 int error = 0; 398 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 399 400 /* 401 * Update local times for special files. 402 */ 403 if (np->n_flag & (NACC | NUPD)) 404 np->n_flag |= NCHG; 405 /* 406 * First look in the cache. 407 */ 408 if (nfs_getattrcache(vp, ap->a_vap) == 0) 409 return (0); 410 nfsstats.rpccnt[NFSPROC_GETATTR]++; 411 nfsm_reqhead(vp, NFSPROC_GETATTR, NFSX_FH); 412 nfsm_fhtom(vp); 413 nfsm_request(vp, NFSPROC_GETATTR, ap->a_p, ap->a_cred); 414 nfsm_loadattr(vp, ap->a_vap); 415 nfsm_reqdone; 416 return (error); 417 } 418 419 /* 420 * nfs setattr call. 421 */ 422 int 423 nfs_setattr(ap) 424 struct vop_setattr_args /* { 425 struct vnodeop_desc *a_desc; 426 struct vnode *a_vp; 427 struct vattr *a_vap; 428 struct ucred *a_cred; 429 struct proc *a_p; 430 } */ *ap; 431 { 432 register struct nfsv2_sattr *sp; 433 register caddr_t cp; 434 register long t1; 435 caddr_t bpos, dpos, cp2; 436 u_long *tl; 437 int error = 0, isnq; 438 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 439 register struct vnode *vp = ap->a_vp; 440 register struct nfsnode *np = VTONFS(vp); 441 register struct vattr *vap = ap->a_vap; 442 u_quad_t frev; 443 444 nfsstats.rpccnt[NFSPROC_SETATTR]++; 445 isnq = (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS); 446 nfsm_reqhead(vp, NFSPROC_SETATTR, NFSX_FH+NFSX_SATTR(isnq)); 447 nfsm_fhtom(vp); 448 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 449 if (vap->va_mode == (u_short)-1) 450 sp->sa_mode = VNOVAL; 451 else 452 sp->sa_mode = vtonfs_mode(vp->v_type, vap->va_mode); 453 if (vap->va_uid == (uid_t)-1) 454 sp->sa_uid = VNOVAL; 455 else 456 sp->sa_uid = txdr_unsigned(vap->va_uid); 457 if (vap->va_gid == (gid_t)-1) 458 sp->sa_gid = VNOVAL; 459 else 460 sp->sa_gid = txdr_unsigned(vap->va_gid); 461 if (isnq) { 462 txdr_hyper(&vap->va_size, &sp->sa_nqsize); 463 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 464 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 465 sp->sa_nqflags = txdr_unsigned(vap->va_flags); 466 sp->sa_nqrdev = VNOVAL; 467 } else { 468 sp->sa_nfssize = txdr_unsigned(vap->va_size); 469 sp->sa_nfsatime.nfs_sec = txdr_unsigned(vap->va_atime.ts_sec); 470 sp->sa_nfsatime.nfs_usec = txdr_unsigned(vap->va_flags); 471 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 472 } 473 if (vap->va_size != VNOVAL || vap->va_mtime.ts_sec != VNOVAL || 474 vap->va_atime.ts_sec != VNOVAL) { 475 if (np->n_flag & NMODIFIED) { 476 NFS_VINVBUFE(np, vp, vap->va_size? TRUE: FALSE, 477 ap->a_cred, ap->a_p, error); 478 } 479 if (vap->va_size != VNOVAL) 480 np->n_size = np->n_vattr.va_size = vap->va_size; 481 } 482 nfsm_request(vp, NFSPROC_SETATTR, ap->a_p, ap->a_cred); 483 nfsm_loadattr(vp, (struct vattr *)0); 484 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) && 485 NQNFS_CKCACHABLE(vp, NQL_WRITE)) { 486 nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED); 487 fxdr_hyper(tl, &frev); 488 if (frev > np->n_brev) 489 np->n_brev = frev; 490 } 491 nfsm_reqdone; 492 return (error); 493 } 494 495 /* 496 * nfs lookup call, one step at a time... 497 * First look in cache 498 * If not found, unlock the directory nfsnode and do the rpc 499 */ 500 int 501 nfs_lookup(ap) 502 struct vop_lookup_args /* { 503 struct vnodeop_desc *a_desc; 504 struct vnode *a_dvp; 505 struct vnode **a_vpp; 506 struct componentname *a_cnp; 507 } */ *ap; 508 { 509 register struct componentname *cnp = ap->a_cnp; 510 register struct vnode *dvp = ap->a_dvp; 511 register struct vnode **vpp = ap->a_vpp; 512 register int flags = cnp->cn_flags; 513 register struct vnode *vdp; 514 register u_long *tl; 515 register caddr_t cp; 516 register long t1, t2; 517 struct nfsmount *nmp; 518 struct nfsnode *tp; 519 caddr_t bpos, dpos, cp2; 520 time_t reqtime; 521 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 522 struct vnode *newvp; 523 long len; 524 nfsv2fh_t *fhp; 525 struct nfsnode *np; 526 int lockparent, wantparent, error = 0; 527 int nqlflag, cachable; 528 u_quad_t frev; 529 530 *vpp = NULL; 531 if (dvp->v_type != VDIR) 532 return (ENOTDIR); 533 lockparent = flags & LOCKPARENT; 534 wantparent = flags & (LOCKPARENT|WANTPARENT); 535 nmp = VFSTONFS(dvp->v_mount); 536 np = VTONFS(dvp); 537 if ((error = cache_lookup(dvp, vpp, cnp)) && error != ENOENT) { 538 struct vattr vattr; 539 int vpid; 540 541 vdp = *vpp; 542 vpid = vdp->v_id; 543 /* 544 * See the comment starting `Step through' in ufs/ufs_lookup.c 545 * for an explanation of the locking protocol 546 */ 547 if (dvp == vdp) { 548 VREF(vdp); 549 error = 0; 550 } else 551 error = vget(vdp); 552 if (!error) { 553 if (vpid == vdp->v_id) { 554 if (nmp->nm_flag & NFSMNT_NQNFS) { 555 if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) == 0) { 556 nfsstats.lookupcache_hits++; 557 if (cnp->cn_nameiop != LOOKUP && 558 (flags & ISLASTCN)) 559 cnp->cn_flags |= SAVENAME; 560 return (0); 561 } else if (NQNFS_CKCACHABLE(dvp, NQL_READ)) { 562 if (np->n_lrev != np->n_brev || 563 (np->n_flag & NMODIFIED)) { 564 np->n_direofoffset = 0; 565 cache_purge(dvp); 566 NFS_VINVBUFE(np, dvp, FALSE, 567 cnp->cn_cred, cnp->cn_proc, 568 error); 569 np->n_brev = np->n_lrev; 570 } else { 571 nfsstats.lookupcache_hits++; 572 if (cnp->cn_nameiop != LOOKUP && 573 (flags & ISLASTCN)) 574 cnp->cn_flags |= SAVENAME; 575 return (0); 576 } 577 } 578 } else if (!VOP_GETATTR(vdp, &vattr, cnp->cn_cred, cnp->cn_proc) && 579 vattr.va_ctime.ts_sec == VTONFS(vdp)->n_ctime) { 580 nfsstats.lookupcache_hits++; 581 if (cnp->cn_nameiop != LOOKUP && 582 (flags & ISLASTCN)) 583 cnp->cn_flags |= SAVENAME; 584 return (0); 585 } 586 cache_purge(vdp); 587 } 588 vrele(vdp); 589 } 590 *vpp = NULLVP; 591 } 592 error = 0; 593 nfsstats.lookupcache_misses++; 594 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 595 len = cnp->cn_namelen; 596 nfsm_reqhead(dvp, NFSPROC_LOOKUP, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 597 598 /* 599 * For nqnfs optionally piggyback a getlease request for the name 600 * being looked up. 601 */ 602 if (nmp->nm_flag & NFSMNT_NQNFS) { 603 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 604 if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) && 605 ((cnp->cn_flags & MAKEENTRY) && 606 (cnp->cn_nameiop != DELETE || !(flags & ISLASTCN)))) 607 *tl = txdr_unsigned(nmp->nm_leaseterm); 608 else 609 *tl = 0; 610 } 611 nfsm_fhtom(dvp); 612 nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN); 613 reqtime = time.tv_sec; 614 nfsm_request(dvp, NFSPROC_LOOKUP, cnp->cn_proc, cnp->cn_cred); 615 nfsmout: 616 if (error) { 617 if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME) && 618 (flags & ISLASTCN) && error == ENOENT) 619 error = EJUSTRETURN; 620 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)) 621 cnp->cn_flags |= SAVENAME; 622 return (error); 623 } 624 if (nmp->nm_flag & NFSMNT_NQNFS) { 625 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 626 if (*tl) { 627 nqlflag = fxdr_unsigned(int, *tl); 628 nfsm_dissect(tl, u_long *, 4*NFSX_UNSIGNED); 629 cachable = fxdr_unsigned(int, *tl++); 630 reqtime += fxdr_unsigned(int, *tl++); 631 fxdr_hyper(tl, &frev); 632 } else 633 nqlflag = 0; 634 } 635 nfsm_dissect(fhp, nfsv2fh_t *, NFSX_FH); 636 637 /* 638 * Handle RENAME case... 639 */ 640 if (cnp->cn_nameiop == RENAME && wantparent && (flags & ISLASTCN)) { 641 if (!bcmp(np->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 642 m_freem(mrep); 643 return (EISDIR); 644 } 645 if (error = nfs_nget(dvp->v_mount, fhp, &np)) { 646 m_freem(mrep); 647 return (error); 648 } 649 newvp = NFSTOV(np); 650 if (error = 651 nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) { 652 vrele(newvp); 653 m_freem(mrep); 654 return (error); 655 } 656 *vpp = newvp; 657 m_freem(mrep); 658 cnp->cn_flags |= SAVENAME; 659 return (0); 660 } 661 662 if (!bcmp(np->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 663 VREF(dvp); 664 newvp = dvp; 665 } else { 666 if (error = nfs_nget(dvp->v_mount, fhp, &np)) { 667 m_freem(mrep); 668 return (error); 669 } 670 newvp = NFSTOV(np); 671 } 672 if (error = nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) { 673 vrele(newvp); 674 m_freem(mrep); 675 return (error); 676 } 677 m_freem(mrep); 678 *vpp = newvp; 679 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)) 680 cnp->cn_flags |= SAVENAME; 681 if ((cnp->cn_flags & MAKEENTRY) && 682 (cnp->cn_nameiop != DELETE || !(flags & ISLASTCN))) { 683 if ((nmp->nm_flag & NFSMNT_NQNFS) == 0) 684 np->n_ctime = np->n_vattr.va_ctime.ts_sec; 685 else if (nqlflag && reqtime > time.tv_sec) 686 nqnfs_clientlease(nmp, np, nqlflag, cachable, reqtime, 687 frev); 688 cache_enter(dvp, *vpp, cnp); 689 } 690 return (0); 691 } 692 693 /* 694 * nfs read call. 695 * Just call nfs_bioread() to do the work. 696 */ 697 int 698 nfs_read(ap) 699 struct vop_read_args /* { 700 struct vnode *a_vp; 701 struct uio *a_uio; 702 int a_ioflag; 703 struct ucred *a_cred; 704 } */ *ap; 705 { 706 register struct vnode *vp = ap->a_vp; 707 708 if (vp->v_type != VREG) 709 return (EPERM); 710 return (nfs_bioread(vp, ap->a_uio, ap->a_ioflag, ap->a_cred)); 711 } 712 713 /* 714 * nfs readlink call 715 */ 716 int 717 nfs_readlink(ap) 718 struct vop_readlink_args /* { 719 struct vnode *a_vp; 720 struct uio *a_uio; 721 struct ucred *a_cred; 722 } */ *ap; 723 { 724 register struct vnode *vp = ap->a_vp; 725 726 if (vp->v_type != VLNK) 727 return (EPERM); 728 return (nfs_bioread(vp, ap->a_uio, 0, ap->a_cred)); 729 } 730 731 /* 732 * Do a readlink rpc. 733 * Called by nfs_doio() from below the buffer cache. 734 */ 735 int 736 nfs_readlinkrpc(vp, uiop, cred) 737 register struct vnode *vp; 738 struct uio *uiop; 739 struct ucred *cred; 740 { 741 register u_long *tl; 742 register caddr_t cp; 743 register long t1; 744 caddr_t bpos, dpos, cp2; 745 int error = 0; 746 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 747 long len; 748 749 nfsstats.rpccnt[NFSPROC_READLINK]++; 750 nfsm_reqhead(vp, NFSPROC_READLINK, NFSX_FH); 751 nfsm_fhtom(vp); 752 nfsm_request(vp, NFSPROC_READLINK, uiop->uio_procp, cred); 753 nfsm_strsiz(len, NFS_MAXPATHLEN); 754 nfsm_mtouio(uiop, len); 755 nfsm_reqdone; 756 return (error); 757 } 758 759 /* 760 * nfs read rpc call 761 * Ditto above 762 */ 763 int 764 nfs_readrpc(vp, uiop, cred) 765 register struct vnode *vp; 766 struct uio *uiop; 767 struct ucred *cred; 768 { 769 register u_long *tl; 770 register caddr_t cp; 771 register long t1; 772 caddr_t bpos, dpos, cp2; 773 int error = 0; 774 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 775 struct nfsmount *nmp; 776 long len, retlen, tsiz; 777 778 nmp = VFSTONFS(vp->v_mount); 779 tsiz = uiop->uio_resid; 780 if (uiop->uio_offset + tsiz > 0xffffffff && 781 (nmp->nm_flag & NFSMNT_NQNFS) == 0) 782 return (EFBIG); 783 while (tsiz > 0) { 784 nfsstats.rpccnt[NFSPROC_READ]++; 785 len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz; 786 nfsm_reqhead(vp, NFSPROC_READ, NFSX_FH+NFSX_UNSIGNED*3); 787 nfsm_fhtom(vp); 788 nfsm_build(tl, u_long *, NFSX_UNSIGNED*3); 789 if (nmp->nm_flag & NFSMNT_NQNFS) { 790 txdr_hyper(&uiop->uio_offset, tl); 791 *(tl + 2) = txdr_unsigned(len); 792 } else { 793 *tl++ = txdr_unsigned(uiop->uio_offset); 794 *tl++ = txdr_unsigned(len); 795 *tl = 0; 796 } 797 nfsm_request(vp, NFSPROC_READ, uiop->uio_procp, cred); 798 nfsm_loadattr(vp, (struct vattr *)0); 799 nfsm_strsiz(retlen, nmp->nm_rsize); 800 nfsm_mtouio(uiop, retlen); 801 m_freem(mrep); 802 if (retlen < len) 803 tsiz = 0; 804 else 805 tsiz -= len; 806 } 807 nfsmout: 808 return (error); 809 } 810 811 /* 812 * nfs write call 813 */ 814 int 815 nfs_writerpc(vp, uiop, cred, ioflags) 816 register struct vnode *vp; 817 struct uio *uiop; 818 struct ucred *cred; 819 int ioflags; 820 { 821 register u_long *tl; 822 register caddr_t cp; 823 register long t1; 824 caddr_t bpos, dpos, cp2; 825 int error = 0; 826 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 827 struct nfsmount *nmp; 828 struct nfsnode *np = VTONFS(vp); 829 u_quad_t frev; 830 long len, tsiz; 831 832 nmp = VFSTONFS(vp->v_mount); 833 tsiz = uiop->uio_resid; 834 if (uiop->uio_offset + tsiz > 0xffffffff && 835 (nmp->nm_flag & NFSMNT_NQNFS) == 0) 836 return (EFBIG); 837 while (tsiz > 0) { 838 nfsstats.rpccnt[NFSPROC_WRITE]++; 839 len = (tsiz > nmp->nm_wsize) ? nmp->nm_wsize : tsiz; 840 nfsm_reqhead(vp, NFSPROC_WRITE, 841 NFSX_FH+NFSX_UNSIGNED*4+nfsm_rndup(len)); 842 nfsm_fhtom(vp); 843 nfsm_build(tl, u_long *, NFSX_UNSIGNED * 4); 844 if (nmp->nm_flag & NFSMNT_NQNFS) { 845 txdr_hyper(&uiop->uio_offset, tl); 846 tl += 2; 847 if (ioflags & IO_APPEND) 848 *tl++ = txdr_unsigned(1); 849 else 850 *tl++ = 0; 851 } else { 852 *++tl = txdr_unsigned(uiop->uio_offset); 853 tl += 2; 854 } 855 *tl = txdr_unsigned(len); 856 nfsm_uiotom(uiop, len); 857 nfsm_request(vp, NFSPROC_WRITE, uiop->uio_procp, cred); 858 nfsm_loadattr(vp, (struct vattr *)0); 859 if (nmp->nm_flag & NFSMNT_MYWRITE) 860 VTONFS(vp)->n_mtime = VTONFS(vp)->n_vattr.va_mtime.ts_sec; 861 else if ((nmp->nm_flag & NFSMNT_NQNFS) && 862 NQNFS_CKCACHABLE(vp, NQL_WRITE)) { 863 nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED); 864 fxdr_hyper(tl, &frev); 865 if (frev > np->n_brev) 866 np->n_brev = frev; 867 } 868 m_freem(mrep); 869 tsiz -= len; 870 } 871 nfsmout: 872 if (error) 873 uiop->uio_resid = tsiz; 874 return (error); 875 } 876 877 /* 878 * nfs mknod call 879 * This is a kludge. Use a create rpc but with the IFMT bits of the mode 880 * set to specify the file type and the size field for rdev. 881 */ 882 /* ARGSUSED */ 883 int 884 nfs_mknod(ap) 885 struct vop_mknod_args /* { 886 struct vnode *a_dvp; 887 struct vnode **a_vpp; 888 struct componentname *a_cnp; 889 struct vattr *a_vap; 890 } */ *ap; 891 { 892 register struct vnode *dvp = ap->a_dvp; 893 register struct vattr *vap = ap->a_vap; 894 register struct componentname *cnp = ap->a_cnp; 895 register struct nfsv2_sattr *sp; 896 register u_long *tl; 897 register caddr_t cp; 898 register long t1, t2; 899 struct vnode *newvp; 900 char *cp2; 901 caddr_t bpos, dpos; 902 int error = 0, isnq; 903 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 904 u_long rdev; 905 906 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 907 if (vap->va_type == VCHR || vap->va_type == VBLK) 908 rdev = txdr_unsigned(vap->va_rdev); 909 #ifdef FIFO 910 else if (vap->va_type == VFIFO) 911 rdev = 0xffffffff; 912 #endif /* FIFO */ 913 else { 914 VOP_ABORTOP(dvp, cnp); 915 vput(dvp); 916 return (EOPNOTSUPP); 917 } 918 nfsstats.rpccnt[NFSPROC_CREATE]++; 919 nfsm_reqhead(dvp, NFSPROC_CREATE, 920 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)+NFSX_SATTR(isnq)); 921 nfsm_fhtom(dvp); 922 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 923 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 924 sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode); 925 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 926 sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid); 927 if (isnq) { 928 sp->sa_nqrdev = rdev; 929 sp->sa_nqflags = 0; 930 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 931 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 932 } else { 933 sp->sa_nfssize = rdev; 934 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 935 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 936 } 937 nfsm_request(dvp, NFSPROC_CREATE, cnp->cn_proc, cnp->cn_cred); 938 nfsm_mtofh(dvp, newvp); 939 nfsm_reqdone; 940 if (!error) 941 cache_enter(dvp, newvp, cnp); 942 FREE(cnp->cn_pnbuf, M_NAMEI); 943 VTONFS(dvp)->n_flag |= NMODIFIED; 944 vrele(dvp); 945 return (error); 946 } 947 948 /* 949 * nfs file create call 950 */ 951 int 952 nfs_create(ap) 953 struct vop_create_args /* { 954 struct vnode *a_dvp; 955 struct vnode **a_vpp; 956 struct componentname *a_cnp; 957 struct vattr *a_vap; 958 } */ *ap; 959 { 960 register struct vnode *dvp = ap->a_dvp; 961 register struct vattr *vap = ap->a_vap; 962 register struct componentname *cnp = ap->a_cnp; 963 register struct nfsv2_sattr *sp; 964 register u_long *tl; 965 register caddr_t cp; 966 register long t1, t2; 967 caddr_t bpos, dpos, cp2; 968 int error = 0, isnq; 969 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 970 971 nfsstats.rpccnt[NFSPROC_CREATE]++; 972 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 973 nfsm_reqhead(dvp, NFSPROC_CREATE, 974 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)+NFSX_SATTR(isnq)); 975 nfsm_fhtom(dvp); 976 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 977 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 978 sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode); 979 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 980 sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid); 981 if (isnq) { 982 u_quad_t qval = 0; 983 984 txdr_hyper(&qval, &sp->sa_nqsize); 985 sp->sa_nqflags = 0; 986 sp->sa_nqrdev = -1; 987 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 988 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 989 } else { 990 sp->sa_nfssize = 0; 991 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 992 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 993 } 994 nfsm_request(dvp, NFSPROC_CREATE, cnp->cn_proc, cnp->cn_cred); 995 nfsm_mtofh(dvp, *ap->a_vpp); 996 nfsm_reqdone; 997 if (!error) 998 cache_enter(dvp, *ap->a_vpp, cnp); 999 FREE(cnp->cn_pnbuf, M_NAMEI); 1000 VTONFS(dvp)->n_flag |= NMODIFIED; 1001 vrele(dvp); 1002 return (error); 1003 } 1004 1005 /* 1006 * nfs file remove call 1007 * To try and make nfs semantics closer to ufs semantics, a file that has 1008 * other processes using the vnode is renamed instead of removed and then 1009 * removed later on the last close. 1010 * - If v_usecount > 1 1011 * If a rename is not already in the works 1012 * call nfs_sillyrename() to set it up 1013 * else 1014 * do the remove rpc 1015 */ 1016 int 1017 nfs_remove(ap) 1018 struct vop_remove_args /* { 1019 struct vnodeop_desc *a_desc; 1020 struct vnode * a_dvp; 1021 struct vnode * a_vp; 1022 struct componentname * a_cnp; 1023 } */ *ap; 1024 { 1025 register struct vnode *vp = ap->a_vp; 1026 register struct vnode *dvp = ap->a_dvp; 1027 register struct componentname *cnp = ap->a_cnp; 1028 register struct nfsnode *np = VTONFS(vp); 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 if (vp->v_usecount > 1) { 1037 if (!np->n_sillyrename) 1038 error = nfs_sillyrename(dvp, vp, cnp); 1039 } else { 1040 /* 1041 * Purge the name cache so that the chance of a lookup for 1042 * the name succeeding while the remove is in progress is 1043 * minimized. Without node locking it can still happen, such 1044 * that an I/O op returns ESTALE, but since you get this if 1045 * another host removes the file.. 1046 */ 1047 cache_purge(vp); 1048 /* 1049 * Throw away biocache buffers. Mainly to avoid 1050 * unnecessary delayed writes. 1051 */ 1052 NFS_VINVBUFE(np, vp, FALSE, cnp->cn_cred, cnp->cn_proc, error); 1053 /* Do the rpc */ 1054 nfsstats.rpccnt[NFSPROC_REMOVE]++; 1055 nfsm_reqhead(dvp, NFSPROC_REMOVE, 1056 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)); 1057 nfsm_fhtom(dvp); 1058 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1059 nfsm_request(dvp, NFSPROC_REMOVE, cnp->cn_proc, cnp->cn_cred); 1060 nfsm_reqdone; 1061 FREE(cnp->cn_pnbuf, M_NAMEI); 1062 VTONFS(dvp)->n_flag |= NMODIFIED; 1063 /* 1064 * Kludge City: If the first reply to the remove rpc is lost.. 1065 * the reply to the retransmitted request will be ENOENT 1066 * since the file was in fact removed 1067 * Therefore, we cheat and return success. 1068 */ 1069 if (error == ENOENT) 1070 error = 0; 1071 } 1072 np->n_attrstamp = 0; 1073 vrele(dvp); 1074 vrele(vp); 1075 return (error); 1076 } 1077 1078 /* 1079 * nfs file remove rpc called from nfs_inactive 1080 */ 1081 int 1082 nfs_removeit(sp) 1083 register struct sillyrename *sp; 1084 { 1085 register u_long *tl; 1086 register caddr_t cp; 1087 register long t2; 1088 caddr_t bpos, dpos; 1089 int error = 0; 1090 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1091 1092 nfsstats.rpccnt[NFSPROC_REMOVE]++; 1093 nfsm_reqhead(sp->s_dvp, NFSPROC_REMOVE, 1094 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(sp->s_namlen)); 1095 nfsm_fhtom(sp->s_dvp); 1096 nfsm_strtom(sp->s_name, sp->s_namlen, NFS_MAXNAMLEN); 1097 nfsm_request(sp->s_dvp, NFSPROC_REMOVE, NULL, sp->s_cred); 1098 nfsm_reqdone; 1099 VTONFS(sp->s_dvp)->n_flag |= NMODIFIED; 1100 return (error); 1101 } 1102 1103 /* 1104 * nfs file rename call 1105 */ 1106 int 1107 nfs_rename(ap) 1108 struct vop_rename_args /* { 1109 struct vnode *a_fdvp; 1110 struct vnode *a_fvp; 1111 struct componentname *a_fcnp; 1112 struct vnode *a_tdvp; 1113 struct vnode *a_tvp; 1114 struct componentname *a_tcnp; 1115 } */ *ap; 1116 { 1117 register struct vnode *fvp = ap->a_fvp; 1118 register struct vnode *tvp = ap->a_tvp; 1119 register struct vnode *fdvp = ap->a_fdvp; 1120 register struct vnode *tdvp = ap->a_tdvp; 1121 register struct componentname *tcnp = ap->a_tcnp; 1122 register struct componentname *fcnp = ap->a_fcnp; 1123 register u_long *tl; 1124 register caddr_t cp; 1125 register long t2; 1126 caddr_t bpos, dpos; 1127 int error = 0; 1128 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1129 1130 /* Check for cross-device rename */ 1131 if ((fvp->v_mount != tdvp->v_mount) || 1132 (tvp && (fvp->v_mount != tvp->v_mount))) { 1133 error = EXDEV; 1134 goto out; 1135 } 1136 1137 1138 nfsstats.rpccnt[NFSPROC_RENAME]++; 1139 nfsm_reqhead(fdvp, NFSPROC_RENAME, 1140 (NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(fcnp->cn_namelen)+ 1141 nfsm_rndup(fcnp->cn_namelen)); /* or fcnp->cn_cred?*/ 1142 nfsm_fhtom(fdvp); 1143 nfsm_strtom(fcnp->cn_nameptr, fcnp->cn_namelen, NFS_MAXNAMLEN); 1144 nfsm_fhtom(tdvp); 1145 nfsm_strtom(tcnp->cn_nameptr, tcnp->cn_namelen, NFS_MAXNAMLEN); 1146 nfsm_request(fdvp, NFSPROC_RENAME, tcnp->cn_proc, tcnp->cn_cred); 1147 nfsm_reqdone; 1148 VTONFS(fdvp)->n_flag |= NMODIFIED; 1149 VTONFS(tdvp)->n_flag |= NMODIFIED; 1150 if (fvp->v_type == VDIR) { 1151 if (tvp != NULL && tvp->v_type == VDIR) 1152 cache_purge(tdvp); 1153 cache_purge(fdvp); 1154 } 1155 out: 1156 if (tdvp == tvp) 1157 vrele(tdvp); 1158 else 1159 vput(tdvp); 1160 if (tvp) 1161 vput(tvp); 1162 vrele(fdvp); 1163 vrele(fvp); 1164 /* 1165 * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry. 1166 */ 1167 if (error == ENOENT) 1168 error = 0; 1169 return (error); 1170 } 1171 1172 /* 1173 * nfs file rename rpc called from nfs_remove() above 1174 */ 1175 int 1176 nfs_renameit(sdvp, scnp, sp) 1177 struct vnode *sdvp; 1178 struct componentname *scnp; 1179 register struct sillyrename *sp; 1180 { 1181 register u_long *tl; 1182 register caddr_t cp; 1183 register long t2; 1184 caddr_t bpos, dpos; 1185 int error = 0; 1186 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1187 1188 nfsstats.rpccnt[NFSPROC_RENAME]++; 1189 nfsm_reqhead(sdvp, NFSPROC_RENAME, 1190 (NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(scnp->cn_namelen)+ 1191 nfsm_rndup(sp->s_namlen)); 1192 nfsm_fhtom(sdvp); 1193 nfsm_strtom(scnp->cn_nameptr, scnp->cn_namelen, NFS_MAXNAMLEN); 1194 nfsm_fhtom(sdvp); 1195 nfsm_strtom(sp->s_name, sp->s_namlen, NFS_MAXNAMLEN); 1196 nfsm_request(sdvp, NFSPROC_RENAME, scnp->cn_proc, scnp->cn_cred); 1197 nfsm_reqdone; 1198 FREE(scnp->cn_pnbuf, M_NAMEI); 1199 VTONFS(sdvp)->n_flag |= NMODIFIED; 1200 return (error); 1201 } 1202 1203 /* 1204 * nfs hard link create call 1205 */ 1206 int 1207 nfs_link(ap) 1208 struct vop_link_args /* { 1209 struct vnode *a_vp; 1210 struct vnode *a_tdvp; 1211 struct componentname *a_cnp; 1212 } */ *ap; 1213 { 1214 register struct vnode *vp = ap->a_vp; 1215 register struct vnode *tdvp = ap->a_tdvp; 1216 register struct componentname *cnp = ap->a_cnp; 1217 register u_long *tl; 1218 register caddr_t cp; 1219 register long t2; 1220 caddr_t bpos, dpos; 1221 int error = 0; 1222 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1223 1224 if (vp->v_mount != tdvp->v_mount) { 1225 /*VOP_ABORTOP(vp, cnp);*/ 1226 if (tdvp == vp) 1227 vrele(vp); 1228 else 1229 vput(vp); 1230 return (EXDEV); 1231 } 1232 1233 nfsstats.rpccnt[NFSPROC_LINK]++; 1234 nfsm_reqhead(tdvp, NFSPROC_LINK, 1235 NFSX_FH*2+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)); 1236 nfsm_fhtom(tdvp); 1237 nfsm_fhtom(vp); 1238 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1239 nfsm_request(tdvp, NFSPROC_LINK, cnp->cn_proc, cnp->cn_cred); 1240 nfsm_reqdone; 1241 FREE(cnp->cn_pnbuf, M_NAMEI); 1242 VTONFS(tdvp)->n_attrstamp = 0; 1243 VTONFS(vp)->n_flag |= NMODIFIED; 1244 vrele(vp); 1245 /* 1246 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 1247 */ 1248 if (error == EEXIST) 1249 error = 0; 1250 return (error); 1251 } 1252 1253 /* 1254 * nfs symbolic link create call 1255 */ 1256 /* start here */ 1257 int 1258 nfs_symlink(ap) 1259 struct vop_symlink_args /* { 1260 struct vnode *a_dvp; 1261 struct vnode **a_vpp; 1262 struct componentname *a_cnp; 1263 struct vattr *a_vap; 1264 char *a_target; 1265 } */ *ap; 1266 { 1267 register struct vnode *dvp = ap->a_dvp; 1268 register struct vattr *vap = ap->a_vap; 1269 register struct componentname *cnp = ap->a_cnp; 1270 register struct nfsv2_sattr *sp; 1271 register u_long *tl; 1272 register caddr_t cp; 1273 register long t2; 1274 caddr_t bpos, dpos; 1275 int slen, error = 0, isnq; 1276 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1277 1278 nfsstats.rpccnt[NFSPROC_SYMLINK]++; 1279 slen = strlen(ap->a_target); 1280 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 1281 nfsm_reqhead(dvp, NFSPROC_SYMLINK, NFSX_FH+2*NFSX_UNSIGNED+ 1282 nfsm_rndup(cnp->cn_namelen)+nfsm_rndup(slen)+NFSX_SATTR(isnq)); 1283 nfsm_fhtom(dvp); 1284 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1285 nfsm_strtom(ap->a_target, slen, NFS_MAXPATHLEN); 1286 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 1287 sp->sa_mode = vtonfs_mode(VLNK, vap->va_mode); 1288 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 1289 sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid); 1290 if (isnq) { 1291 quad_t qval = -1; 1292 1293 txdr_hyper(&qval, &sp->sa_nqsize); 1294 sp->sa_nqflags = 0; 1295 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 1296 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 1297 } else { 1298 sp->sa_nfssize = -1; 1299 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 1300 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 1301 } 1302 nfsm_request(dvp, NFSPROC_SYMLINK, cnp->cn_proc, cnp->cn_cred); 1303 nfsm_reqdone; 1304 FREE(cnp->cn_pnbuf, M_NAMEI); 1305 VTONFS(dvp)->n_flag |= NMODIFIED; 1306 vrele(dvp); 1307 /* 1308 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 1309 */ 1310 if (error == EEXIST) 1311 error = 0; 1312 return (error); 1313 } 1314 1315 /* 1316 * nfs make dir call 1317 */ 1318 int 1319 nfs_mkdir(ap) 1320 struct vop_mkdir_args /* { 1321 struct vnode *a_dvp; 1322 struct vnode **a_vpp; 1323 struct componentname *a_cnp; 1324 struct vattr *a_vap; 1325 } */ *ap; 1326 { 1327 register struct vnode *dvp = ap->a_dvp; 1328 register struct vattr *vap = ap->a_vap; 1329 register struct componentname *cnp = ap->a_cnp; 1330 register struct vnode **vpp = ap->a_vpp; 1331 register struct nfsv2_sattr *sp; 1332 register u_long *tl; 1333 register caddr_t cp; 1334 register long t1, t2; 1335 register int len; 1336 caddr_t bpos, dpos, cp2; 1337 int error = 0, firsttry = 1, isnq; 1338 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1339 1340 len = cnp->cn_namelen; 1341 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 1342 nfsstats.rpccnt[NFSPROC_MKDIR]++; 1343 nfsm_reqhead(dvp, NFSPROC_MKDIR, 1344 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)+NFSX_SATTR(isnq)); 1345 nfsm_fhtom(dvp); 1346 nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN); 1347 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 1348 sp->sa_mode = vtonfs_mode(VDIR, vap->va_mode); 1349 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 1350 sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid); 1351 if (isnq) { 1352 quad_t qval = -1; 1353 1354 txdr_hyper(&qval, &sp->sa_nqsize); 1355 sp->sa_nqflags = 0; 1356 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 1357 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 1358 } else { 1359 sp->sa_nfssize = -1; 1360 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 1361 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 1362 } 1363 nfsm_request(dvp, NFSPROC_MKDIR, cnp->cn_proc, cnp->cn_cred); 1364 nfsm_mtofh(dvp, *vpp); 1365 nfsm_reqdone; 1366 VTONFS(dvp)->n_flag |= NMODIFIED; 1367 /* 1368 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry 1369 * if we can succeed in looking up the directory. 1370 * "firsttry" is necessary since the macros may "goto nfsmout" which 1371 * is above the if on errors. (Ugh) 1372 */ 1373 if (error == EEXIST && firsttry) { 1374 firsttry = 0; 1375 error = 0; 1376 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 1377 *vpp = NULL; 1378 nfsm_reqhead(dvp, NFSPROC_LOOKUP, 1379 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 1380 nfsm_fhtom(dvp); 1381 nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN); 1382 nfsm_request(dvp, NFSPROC_LOOKUP, cnp->cn_proc, cnp->cn_cred); 1383 nfsm_mtofh(dvp, *vpp); 1384 if ((*vpp)->v_type != VDIR) { 1385 vput(*vpp); 1386 error = EEXIST; 1387 } 1388 m_freem(mrep); 1389 } 1390 FREE(cnp->cn_pnbuf, M_NAMEI); 1391 vrele(dvp); 1392 return (error); 1393 } 1394 1395 /* 1396 * nfs remove directory call 1397 */ 1398 int 1399 nfs_rmdir(ap) 1400 struct vop_rmdir_args /* { 1401 struct vnode *a_dvp; 1402 struct vnode *a_vp; 1403 struct componentname *a_cnp; 1404 } */ *ap; 1405 { 1406 register struct vnode *vp = ap->a_vp; 1407 register struct vnode *dvp = ap->a_dvp; 1408 register struct componentname *cnp = ap->a_cnp; 1409 register u_long *tl; 1410 register caddr_t cp; 1411 register long t2; 1412 caddr_t bpos, dpos; 1413 int error = 0; 1414 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1415 1416 if (dvp == vp) { 1417 vrele(dvp); 1418 vrele(dvp); 1419 FREE(cnp->cn_pnbuf, M_NAMEI); 1420 return (EINVAL); 1421 } 1422 nfsstats.rpccnt[NFSPROC_RMDIR]++; 1423 nfsm_reqhead(dvp, NFSPROC_RMDIR, 1424 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)); 1425 nfsm_fhtom(dvp); 1426 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1427 nfsm_request(dvp, NFSPROC_RMDIR, cnp->cn_proc, cnp->cn_cred); 1428 nfsm_reqdone; 1429 FREE(cnp->cn_pnbuf, M_NAMEI); 1430 VTONFS(dvp)->n_flag |= NMODIFIED; 1431 cache_purge(dvp); 1432 cache_purge(vp); 1433 vrele(vp); 1434 vrele(dvp); 1435 /* 1436 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 1437 */ 1438 if (error == ENOENT) 1439 error = 0; 1440 return (error); 1441 } 1442 1443 /* 1444 * nfs readdir call 1445 * Although cookie is defined as opaque, I translate it to/from net byte 1446 * order so that it looks more sensible. This appears consistent with the 1447 * Ultrix implementation of NFS. 1448 */ 1449 int 1450 nfs_readdir(ap) 1451 struct vop_readdir_args /* { 1452 struct vnode *a_vp; 1453 struct uio *a_uio; 1454 struct ucred *a_cred; 1455 } */ *ap; 1456 { 1457 register struct vnode *vp = ap->a_vp; 1458 register struct nfsnode *np = VTONFS(vp); 1459 register struct uio *uio = ap->a_uio; 1460 int tresid, error; 1461 struct vattr vattr; 1462 1463 if (vp->v_type != VDIR) 1464 return (EPERM); 1465 /* 1466 * First, check for hit on the EOF offset cache 1467 */ 1468 if (uio->uio_offset != 0 && uio->uio_offset == np->n_direofoffset && 1469 (np->n_flag & NMODIFIED) == 0) { 1470 if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) { 1471 if (NQNFS_CKCACHABLE(vp, NQL_READ)) { 1472 nfsstats.direofcache_hits++; 1473 return (0); 1474 } 1475 } else if (VOP_GETATTR(vp, &vattr, ap->a_cred, uio->uio_procp) == 0 && 1476 np->n_mtime == vattr.va_mtime.ts_sec) { 1477 nfsstats.direofcache_hits++; 1478 return (0); 1479 } 1480 } 1481 1482 /* 1483 * Call nfs_bioread() to do the real work. 1484 */ 1485 tresid = uio->uio_resid; 1486 error = nfs_bioread(vp, uio, 0, ap->a_cred); 1487 1488 if (!error && uio->uio_resid == tresid) 1489 nfsstats.direofcache_misses++; 1490 return (error); 1491 } 1492 1493 /* 1494 * Readdir rpc call. 1495 * Called from below the buffer cache by nfs_doio(). 1496 */ 1497 int 1498 nfs_readdirrpc(vp, uiop, cred) 1499 register struct vnode *vp; 1500 struct uio *uiop; 1501 struct ucred *cred; 1502 { 1503 register long len; 1504 register struct dirent *dp; 1505 register u_long *tl; 1506 register caddr_t cp; 1507 register long t1; 1508 long tlen, lastlen; 1509 caddr_t bpos, dpos, cp2; 1510 int error = 0; 1511 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1512 struct mbuf *md2; 1513 caddr_t dpos2; 1514 int siz; 1515 int more_dirs = 1; 1516 u_long off, savoff; 1517 struct dirent *savdp; 1518 struct nfsmount *nmp; 1519 struct nfsnode *np = VTONFS(vp); 1520 long tresid; 1521 1522 nmp = VFSTONFS(vp->v_mount); 1523 tresid = uiop->uio_resid; 1524 /* 1525 * Loop around doing readdir rpc's of size uio_resid or nm_rsize, 1526 * whichever is smaller, truncated to a multiple of NFS_DIRBLKSIZ. 1527 * The stopping criteria is EOF or buffer full. 1528 */ 1529 while (more_dirs && uiop->uio_resid >= NFS_DIRBLKSIZ) { 1530 nfsstats.rpccnt[NFSPROC_READDIR]++; 1531 nfsm_reqhead(vp, NFSPROC_READDIR, 1532 NFSX_FH + 2 * NFSX_UNSIGNED); 1533 nfsm_fhtom(vp); 1534 nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED); 1535 off = (u_long)uiop->uio_offset; 1536 *tl++ = txdr_unsigned(off); 1537 *tl = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ? 1538 nmp->nm_rsize : uiop->uio_resid) & ~(NFS_DIRBLKSIZ-1)); 1539 nfsm_request(vp, NFSPROC_READDIR, uiop->uio_procp, cred); 1540 siz = 0; 1541 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1542 more_dirs = fxdr_unsigned(int, *tl); 1543 1544 /* Save the position so that we can do nfsm_mtouio() later */ 1545 dpos2 = dpos; 1546 md2 = md; 1547 1548 /* loop thru the dir entries, doctoring them to 4bsd form */ 1549 #ifdef lint 1550 dp = (struct dirent *)0; 1551 #endif /* lint */ 1552 while (more_dirs && siz < uiop->uio_resid) { 1553 savoff = off; /* Hold onto offset and dp */ 1554 savdp = dp; 1555 nfsm_dissecton(tl, u_long *, 2 * NFSX_UNSIGNED); 1556 dp = (struct dirent *)tl; 1557 dp->d_fileno = fxdr_unsigned(u_long, *tl++); 1558 len = fxdr_unsigned(int, *tl); 1559 if (len <= 0 || len > NFS_MAXNAMLEN) { 1560 error = EBADRPC; 1561 m_freem(mrep); 1562 goto nfsmout; 1563 } 1564 dp->d_namlen = (u_char)len; 1565 dp->d_type = DT_UNKNOWN; 1566 nfsm_adv(len); /* Point past name */ 1567 tlen = nfsm_rndup(len); 1568 /* 1569 * This should not be necessary, but some servers have 1570 * broken XDR such that these bytes are not null filled. 1571 */ 1572 if (tlen != len) { 1573 *dpos = '\0'; /* Null-terminate */ 1574 nfsm_adv(tlen - len); 1575 len = tlen; 1576 } 1577 nfsm_dissecton(tl, u_long *, 2 * NFSX_UNSIGNED); 1578 off = fxdr_unsigned(u_long, *tl); 1579 *tl++ = 0; /* Ensures null termination of name */ 1580 more_dirs = fxdr_unsigned(int, *tl); 1581 dp->d_reclen = len + 4 * NFSX_UNSIGNED; 1582 siz += dp->d_reclen; 1583 } 1584 /* 1585 * If at end of rpc data, get the eof boolean 1586 */ 1587 if (!more_dirs) { 1588 nfsm_dissecton(tl, u_long *, NFSX_UNSIGNED); 1589 more_dirs = (fxdr_unsigned(int, *tl) == 0); 1590 1591 /* 1592 * If at EOF, cache directory offset 1593 */ 1594 if (!more_dirs) 1595 np->n_direofoffset = off; 1596 } 1597 /* 1598 * If there is too much to fit in the data buffer, use savoff and 1599 * savdp to trim off the last record. 1600 * --> we are not at eof 1601 */ 1602 if (siz > uiop->uio_resid) { 1603 off = savoff; 1604 siz -= dp->d_reclen; 1605 dp = savdp; 1606 more_dirs = 0; /* Paranoia */ 1607 } 1608 if (siz > 0) { 1609 lastlen = dp->d_reclen; 1610 md = md2; 1611 dpos = dpos2; 1612 nfsm_mtouio(uiop, siz); 1613 uiop->uio_offset = (off_t)off; 1614 } else 1615 more_dirs = 0; /* Ugh, never happens, but in case.. */ 1616 m_freem(mrep); 1617 } 1618 /* 1619 * Fill last record, iff any, out to a multiple of NFS_DIRBLKSIZ 1620 * by increasing d_reclen for the last record. 1621 */ 1622 if (uiop->uio_resid < tresid) { 1623 len = uiop->uio_resid & (NFS_DIRBLKSIZ - 1); 1624 if (len > 0) { 1625 dp = (struct dirent *) 1626 (uiop->uio_iov->iov_base - lastlen); 1627 dp->d_reclen += len; 1628 uiop->uio_iov->iov_base += len; 1629 uiop->uio_iov->iov_len -= len; 1630 uiop->uio_resid -= len; 1631 } 1632 } 1633 nfsmout: 1634 return (error); 1635 } 1636 1637 /* 1638 * Nqnfs readdir_and_lookup RPC. Used in place of nfs_readdirrpc(). 1639 */ 1640 int 1641 nfs_readdirlookrpc(vp, uiop, cred) 1642 struct vnode *vp; 1643 register struct uio *uiop; 1644 struct ucred *cred; 1645 { 1646 register int len; 1647 register struct dirent *dp; 1648 register u_long *tl; 1649 register caddr_t cp; 1650 register long t1; 1651 caddr_t bpos, dpos, cp2; 1652 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1653 struct nameidata nami, *ndp = &nami; 1654 struct componentname *cnp = &ndp->ni_cnd; 1655 u_long off, endoff, fileno; 1656 time_t reqtime, ltime; 1657 struct nfsmount *nmp; 1658 struct nfsnode *np, *tp; 1659 struct vnode *newvp; 1660 nfsv2fh_t *fhp; 1661 u_quad_t frev; 1662 int error = 0, tlen, more_dirs = 1, tresid, doit, bigenough, i; 1663 int cachable; 1664 1665 if (uiop->uio_iovcnt != 1) 1666 panic("nfs rdirlook"); 1667 nmp = VFSTONFS(vp->v_mount); 1668 tresid = uiop->uio_resid; 1669 ndp->ni_dvp = vp; 1670 newvp = NULLVP; 1671 /* 1672 * Loop around doing readdir rpc's of size uio_resid or nm_rsize, 1673 * whichever is smaller, truncated to a multiple of NFS_DIRBLKSIZ. 1674 * The stopping criteria is EOF or buffer full. 1675 */ 1676 while (more_dirs && uiop->uio_resid >= NFS_DIRBLKSIZ) { 1677 nfsstats.rpccnt[NQNFSPROC_READDIRLOOK]++; 1678 nfsm_reqhead(vp, NQNFSPROC_READDIRLOOK, 1679 NFSX_FH + 3 * NFSX_UNSIGNED); 1680 nfsm_fhtom(vp); 1681 nfsm_build(tl, u_long *, 3 * NFSX_UNSIGNED); 1682 off = (u_long)uiop->uio_offset; 1683 *tl++ = txdr_unsigned(off); 1684 *tl++ = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ? 1685 nmp->nm_rsize : uiop->uio_resid) & ~(NFS_DIRBLKSIZ-1)); 1686 if (nmp->nm_flag & NFSMNT_NQLOOKLEASE) 1687 *tl = txdr_unsigned(nmp->nm_leaseterm); 1688 else 1689 *tl = 0; 1690 reqtime = time.tv_sec; 1691 nfsm_request(vp, NQNFSPROC_READDIRLOOK, uiop->uio_procp, cred); 1692 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1693 more_dirs = fxdr_unsigned(int, *tl); 1694 1695 /* loop thru the dir entries, doctoring them to 4bsd form */ 1696 bigenough = 1; 1697 while (more_dirs && bigenough) { 1698 doit = 1; 1699 nfsm_dissect(tl, u_long *, 4 * NFSX_UNSIGNED); 1700 if (nmp->nm_flag & NFSMNT_NQLOOKLEASE) { 1701 cachable = fxdr_unsigned(int, *tl++); 1702 ltime = reqtime + fxdr_unsigned(int, *tl++); 1703 fxdr_hyper(tl, &frev); 1704 } 1705 nfsm_dissect(fhp, nfsv2fh_t *, NFSX_FH); 1706 if (!bcmp(VTONFS(vp)->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 1707 VREF(vp); 1708 newvp = vp; 1709 np = VTONFS(vp); 1710 } else { 1711 if (error = nfs_nget(vp->v_mount, fhp, &np)) 1712 doit = 0; 1713 newvp = NFSTOV(np); 1714 } 1715 if (error = nfs_loadattrcache(&newvp, &md, &dpos, 1716 (struct vattr *)0)) 1717 doit = 0; 1718 nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); 1719 fileno = fxdr_unsigned(u_long, *tl++); 1720 len = fxdr_unsigned(int, *tl); 1721 if (len <= 0 || len > NFS_MAXNAMLEN) { 1722 error = EBADRPC; 1723 m_freem(mrep); 1724 goto nfsmout; 1725 } 1726 tlen = (len + 4) & ~0x3; 1727 if ((tlen + DIRHDSIZ) > uiop->uio_resid) 1728 bigenough = 0; 1729 if (bigenough && doit) { 1730 dp = (struct dirent *)uiop->uio_iov->iov_base; 1731 dp->d_fileno = fileno; 1732 dp->d_namlen = len; 1733 dp->d_reclen = tlen + DIRHDSIZ; 1734 dp->d_type = 1735 IFTODT(VTTOIF(np->n_vattr.va_type)); 1736 uiop->uio_resid -= DIRHDSIZ; 1737 uiop->uio_iov->iov_base += DIRHDSIZ; 1738 uiop->uio_iov->iov_len -= DIRHDSIZ; 1739 cnp->cn_nameptr = uiop->uio_iov->iov_base; 1740 cnp->cn_namelen = len; 1741 ndp->ni_vp = newvp; 1742 nfsm_mtouio(uiop, len); 1743 cp = uiop->uio_iov->iov_base; 1744 tlen -= len; 1745 for (i = 0; i < tlen; i++) 1746 *cp++ = '\0'; 1747 uiop->uio_iov->iov_base += tlen; 1748 uiop->uio_iov->iov_len -= tlen; 1749 uiop->uio_resid -= tlen; 1750 cnp->cn_hash = 0; 1751 for (cp = cnp->cn_nameptr, i = 1; i <= len; i++, cp++) 1752 cnp->cn_hash += (unsigned char)*cp * i; 1753 if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) && 1754 ltime > time.tv_sec) 1755 nqnfs_clientlease(nmp, np, NQL_READ, 1756 cachable, ltime, frev); 1757 cache_enter(ndp->ni_dvp, ndp->ni_vp, cnp); 1758 } else { 1759 nfsm_adv(nfsm_rndup(len)); 1760 } 1761 if (newvp != NULLVP) { 1762 vrele(newvp); 1763 newvp = NULLVP; 1764 } 1765 nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); 1766 if (bigenough) 1767 endoff = off = fxdr_unsigned(u_long, *tl++); 1768 else 1769 endoff = fxdr_unsigned(u_long, *tl++); 1770 more_dirs = fxdr_unsigned(int, *tl); 1771 } 1772 /* 1773 * If at end of rpc data, get the eof boolean 1774 */ 1775 if (!more_dirs) { 1776 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1777 more_dirs = (fxdr_unsigned(int, *tl) == 0); 1778 1779 /* 1780 * If at EOF, cache directory offset 1781 */ 1782 if (!more_dirs) 1783 VTONFS(vp)->n_direofoffset = endoff; 1784 } 1785 if (uiop->uio_resid < tresid) 1786 uiop->uio_offset = (off_t)off; 1787 else 1788 more_dirs = 0; 1789 m_freem(mrep); 1790 } 1791 /* 1792 * Fill last record, iff any, out to a multiple of NFS_DIRBLKSIZ 1793 * by increasing d_reclen for the last record. 1794 */ 1795 if (uiop->uio_resid < tresid) { 1796 len = uiop->uio_resid & (NFS_DIRBLKSIZ - 1); 1797 if (len > 0) { 1798 dp->d_reclen += len; 1799 uiop->uio_iov->iov_base += len; 1800 uiop->uio_iov->iov_len -= len; 1801 uiop->uio_resid -= len; 1802 } 1803 } 1804 nfsmout: 1805 if (newvp != NULLVP) 1806 vrele(newvp); 1807 return (error); 1808 } 1809 static char hextoasc[] = "0123456789abcdef"; 1810 1811 /* 1812 * Silly rename. To make the NFS filesystem that is stateless look a little 1813 * more like the "ufs" a remove of an active vnode is translated to a rename 1814 * to a funny looking filename that is removed by nfs_inactive on the 1815 * nfsnode. There is the potential for another process on a different client 1816 * to create the same funny name between the nfs_lookitup() fails and the 1817 * nfs_rename() completes, but... 1818 */ 1819 int 1820 nfs_sillyrename(dvp, vp, cnp) 1821 struct vnode *dvp, *vp; 1822 struct componentname *cnp; 1823 { 1824 register struct nfsnode *np; 1825 register struct sillyrename *sp; 1826 int error; 1827 short pid; 1828 1829 cache_purge(dvp); 1830 np = VTONFS(vp); 1831 #ifdef SILLYSEPARATE 1832 MALLOC(sp, struct sillyrename *, sizeof (struct sillyrename), 1833 M_NFSREQ, M_WAITOK); 1834 #else 1835 sp = &np->n_silly; 1836 #endif 1837 sp->s_cred = crdup(cnp->cn_cred); 1838 sp->s_dvp = dvp; 1839 VREF(dvp); 1840 1841 /* Fudge together a funny name */ 1842 pid = cnp->cn_proc->p_pid; 1843 bcopy(".nfsAxxxx4.4", sp->s_name, 13); 1844 sp->s_namlen = 12; 1845 sp->s_name[8] = hextoasc[pid & 0xf]; 1846 sp->s_name[7] = hextoasc[(pid >> 4) & 0xf]; 1847 sp->s_name[6] = hextoasc[(pid >> 8) & 0xf]; 1848 sp->s_name[5] = hextoasc[(pid >> 12) & 0xf]; 1849 1850 /* Try lookitups until we get one that isn't there */ 1851 while (nfs_lookitup(sp, (nfsv2fh_t *)0, cnp->cn_proc) == 0) { 1852 sp->s_name[4]++; 1853 if (sp->s_name[4] > 'z') { 1854 error = EINVAL; 1855 goto bad; 1856 } 1857 } 1858 if (error = nfs_renameit(dvp, cnp, sp)) 1859 goto bad; 1860 nfs_lookitup(sp, &np->n_fh, cnp->cn_proc); 1861 np->n_sillyrename = sp; 1862 return (0); 1863 bad: 1864 vrele(sp->s_dvp); 1865 crfree(sp->s_cred); 1866 #ifdef SILLYSEPARATE 1867 free((caddr_t)sp, M_NFSREQ); 1868 #endif 1869 return (error); 1870 } 1871 1872 /* 1873 * Look up a file name for silly rename stuff. 1874 * Just like nfs_lookup() except that it doesn't load returned values 1875 * into the nfsnode table. 1876 * If fhp != NULL it copies the returned file handle out 1877 */ 1878 int 1879 nfs_lookitup(sp, fhp, procp) 1880 register struct sillyrename *sp; 1881 nfsv2fh_t *fhp; 1882 struct proc *procp; 1883 { 1884 register struct vnode *vp = sp->s_dvp; 1885 register u_long *tl; 1886 register caddr_t cp; 1887 register long t1, t2; 1888 caddr_t bpos, dpos, cp2; 1889 u_long xid; 1890 int error = 0, isnq; 1891 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1892 long len; 1893 1894 isnq = (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS); 1895 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 1896 len = sp->s_namlen; 1897 nfsm_reqhead(vp, NFSPROC_LOOKUP, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 1898 if (isnq) { 1899 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 1900 *tl = 0; 1901 } 1902 nfsm_fhtom(vp); 1903 nfsm_strtom(sp->s_name, len, NFS_MAXNAMLEN); 1904 nfsm_request(vp, NFSPROC_LOOKUP, procp, sp->s_cred); 1905 if (fhp != NULL) { 1906 if (isnq) 1907 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1908 nfsm_dissect(cp, caddr_t, NFSX_FH); 1909 bcopy(cp, (caddr_t)fhp, NFSX_FH); 1910 } 1911 nfsm_reqdone; 1912 return (error); 1913 } 1914 1915 /* 1916 * Kludge City.. 1917 * - make nfs_bmap() essentially a no-op that does no translation 1918 * - do nfs_strategy() by faking physical I/O with nfs_readrpc/nfs_writerpc 1919 * after mapping the physical addresses into Kernel Virtual space in the 1920 * nfsiobuf area. 1921 * (Maybe I could use the process's page mapping, but I was concerned that 1922 * Kernel Write might not be enabled and also figured copyout() would do 1923 * a lot more work than bcopy() and also it currently happens in the 1924 * context of the swapper process (2). 1925 */ 1926 int 1927 nfs_bmap(ap) 1928 struct vop_bmap_args /* { 1929 struct vnode *a_vp; 1930 daddr_t a_bn; 1931 struct vnode **a_vpp; 1932 daddr_t *a_bnp; 1933 int *a_runp; 1934 } */ *ap; 1935 { 1936 register struct vnode *vp = ap->a_vp; 1937 1938 if (ap->a_vpp != NULL) 1939 *ap->a_vpp = vp; 1940 if (ap->a_bnp != NULL) 1941 *ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize); 1942 return (0); 1943 } 1944 1945 /* 1946 * Strategy routine for phys. i/o 1947 * If the biod's are running, queue a request 1948 * otherwise just call nfs_doio() to get it done 1949 */ 1950 int 1951 nfs_strategy(ap) 1952 struct vop_strategy_args /* { 1953 struct buf *a_bp; 1954 } */ *ap; 1955 { 1956 register struct buf *bp = ap->a_bp; 1957 register int i; 1958 int error = 0; 1959 int fnd = 0; 1960 1961 /* 1962 * Set b_proc. It seems a bit silly to do it here, but since bread() 1963 * doesn't set it, I will. 1964 * Set b_proc == NULL for asynchronous ops, since these may still 1965 * be hanging about after the process terminates. 1966 */ 1967 if ((bp->b_flags & B_PHYS) == 0) { 1968 if (bp->b_flags & B_ASYNC) 1969 bp->b_proc = (struct proc *)0; 1970 else 1971 bp->b_proc = curproc; 1972 } 1973 /* 1974 * If the op is asynchronous and an i/o daemon is waiting 1975 * queue the request, wake it up and wait for completion 1976 * otherwise just do it ourselves. 1977 */ 1978 if ((bp->b_flags & B_ASYNC) == 0 || nfs_numasync == 0) 1979 return (nfs_doio(bp)); 1980 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) { 1981 if (nfs_iodwant[i]) { 1982 queue_enter_tail(&nfs_bufq, bp, struct buf *, b_freelist); 1983 fnd++; 1984 wakeup((caddr_t)&nfs_iodwant[i]); 1985 break; 1986 } 1987 } 1988 if (!fnd) 1989 error = nfs_doio(bp); 1990 return (error); 1991 } 1992 1993 /* 1994 * Fun and games with i/o 1995 * Essentially play ubasetup() and disk interrupt service routine by 1996 * mapping the data buffer into kernel virtual space and doing the 1997 * nfs read or write rpc's from it. 1998 * If the nfsiod's are not running, this is just called from nfs_strategy(), 1999 * otherwise it is called by the nfsiods to do what would normally be 2000 * partially disk interrupt driven. 2001 */ 2002 int 2003 nfs_doio(bp) 2004 register struct buf *bp; 2005 { 2006 register struct uio *uiop; 2007 register struct vnode *vp; 2008 struct nfsnode *np; 2009 struct ucred *cr; 2010 int error; 2011 struct uio uio; 2012 struct iovec io; 2013 2014 vp = bp->b_vp; 2015 np = VTONFS(vp); 2016 uiop = &uio; 2017 uiop->uio_iov = &io; 2018 uiop->uio_iovcnt = 1; 2019 uiop->uio_segflg = UIO_SYSSPACE; 2020 uiop->uio_procp = bp->b_proc; 2021 2022 /* 2023 * For phys i/o, map the b_addr into kernel virtual space using 2024 * the Nfsiomap pte's 2025 * Also, add a temporary b_rcred for reading using the process's uid 2026 * and a guess at a group 2027 */ 2028 if (bp->b_flags & B_PHYS) { 2029 if (bp->b_flags & B_DIRTY) 2030 uiop->uio_procp = pageproc; 2031 cr = crdup(uiop->uio_procp->p_ucred); 2032 /* mapping was already done by vmapbuf */ 2033 io.iov_base = bp->b_un.b_addr; 2034 2035 /* 2036 * And do the i/o rpc 2037 */ 2038 io.iov_len = uiop->uio_resid = bp->b_bcount; 2039 uiop->uio_offset = bp->b_blkno * DEV_BSIZE; 2040 if (bp->b_flags & B_READ) { 2041 uiop->uio_rw = UIO_READ; 2042 nfsstats.read_physios++; 2043 bp->b_error = error = nfs_readrpc(vp, uiop, cr); 2044 (void) vnode_pager_uncache(vp); 2045 } else { 2046 uiop->uio_rw = UIO_WRITE; 2047 nfsstats.write_physios++; 2048 bp->b_error = error = nfs_writerpc(vp, uiop, cr, 0); 2049 } 2050 2051 /* 2052 * Finally, release pte's used by physical i/o 2053 */ 2054 crfree(cr); 2055 } else { 2056 if (bp->b_flags & B_READ) { 2057 io.iov_len = uiop->uio_resid = bp->b_bcount; 2058 io.iov_base = bp->b_un.b_addr; 2059 uiop->uio_rw = UIO_READ; 2060 switch (vp->v_type) { 2061 case VREG: 2062 uiop->uio_offset = bp->b_blkno * DEV_BSIZE; 2063 nfsstats.read_bios++; 2064 error = nfs_readrpc(vp, uiop, bp->b_rcred); 2065 break; 2066 case VLNK: 2067 uiop->uio_offset = 0; 2068 nfsstats.readlink_bios++; 2069 error = nfs_readlinkrpc(vp, uiop, bp->b_rcred); 2070 break; 2071 case VDIR: 2072 uiop->uio_offset = bp->b_lblkno; 2073 nfsstats.readdir_bios++; 2074 if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) 2075 error = nfs_readdirlookrpc(vp, uiop, bp->b_rcred); 2076 else 2077 error = nfs_readdirrpc(vp, uiop, bp->b_rcred); 2078 /* 2079 * Save offset cookie in b_blkno. 2080 */ 2081 bp->b_blkno = uiop->uio_offset; 2082 break; 2083 }; 2084 bp->b_error = error; 2085 } else { 2086 io.iov_len = uiop->uio_resid = bp->b_dirtyend 2087 - bp->b_dirtyoff; 2088 uiop->uio_offset = (bp->b_blkno * DEV_BSIZE) 2089 + bp->b_dirtyoff; 2090 io.iov_base = bp->b_un.b_addr + bp->b_dirtyoff; 2091 uiop->uio_rw = UIO_WRITE; 2092 nfsstats.write_bios++; 2093 bp->b_error = error = nfs_writerpc(vp, uiop, 2094 bp->b_wcred, 0); 2095 if (error) { 2096 np->n_error = error; 2097 np->n_flag |= NWRITEERR; 2098 } 2099 bp->b_dirtyoff = bp->b_dirtyend = 0; 2100 } 2101 } 2102 if (error) 2103 bp->b_flags |= B_ERROR; 2104 bp->b_resid = uiop->uio_resid; 2105 biodone(bp); 2106 return (error); 2107 } 2108 2109 /* 2110 * Mmap a file 2111 * 2112 * NB Currently unsupported. 2113 */ 2114 /* ARGSUSED */ 2115 int 2116 nfs_mmap(ap) 2117 struct vop_mmap_args /* { 2118 struct vnode *a_vp; 2119 int a_fflags; 2120 struct ucred *a_cred; 2121 struct proc *a_p; 2122 } */ *ap; 2123 { 2124 2125 return (EINVAL); 2126 } 2127 2128 /* 2129 * Flush all the blocks associated with a vnode. 2130 * Walk through the buffer pool and push any dirty pages 2131 * associated with the vnode. 2132 */ 2133 /* ARGSUSED */ 2134 int 2135 nfs_fsync(ap) 2136 struct vop_fsync_args /* { 2137 struct vnodeop_desc *a_desc; 2138 struct vnode * a_vp; 2139 struct ucred * a_cred; 2140 int a_waitfor; 2141 struct proc * a_p; 2142 } */ *ap; 2143 { 2144 register struct vnode *vp = ap->a_vp; 2145 register struct nfsnode *np = VTONFS(vp); 2146 register struct buf *bp; 2147 struct buf *nbp; 2148 int s, error = 0; 2149 2150 loop: 2151 s = splbio(); 2152 for (bp = vp->v_dirtyblkhd.le_next; bp; bp = nbp) { 2153 nbp = bp->b_vnbufs.qe_next; 2154 if ((bp->b_flags & B_BUSY)) 2155 continue; 2156 if ((bp->b_flags & B_DELWRI) == 0) 2157 panic("nfs_fsync: not dirty"); 2158 bremfree(bp); 2159 bp->b_flags |= B_BUSY; 2160 splx(s); 2161 bawrite(bp); 2162 goto loop; 2163 } 2164 if (ap->a_waitfor == MNT_WAIT) { 2165 while (vp->v_numoutput) { 2166 vp->v_flag |= VBWAIT; 2167 sleep((caddr_t)&vp->v_numoutput, PRIBIO + 1); 2168 } 2169 #ifdef DIAGNOSTIC 2170 if (vp->v_dirtyblkhd.le_next) { 2171 vprint("nfs_fsync: dirty", vp); 2172 goto loop; 2173 } 2174 #endif 2175 } 2176 splx(s); 2177 np->n_flag &= ~NMODIFIED; 2178 if (np->n_flag & NWRITEERR) { 2179 error = np->n_error; 2180 np->n_flag &= ~NWRITEERR; 2181 } 2182 return (error); 2183 } 2184 2185 /* 2186 * NFS advisory byte-level locks. 2187 * Currently unsupported. 2188 */ 2189 int 2190 nfs_advlock(ap) 2191 struct vop_advlock_args /* { 2192 struct vnode *a_vp; 2193 caddr_t a_id; 2194 int a_op; 2195 struct flock *a_fl; 2196 int a_flags; 2197 } */ *ap; 2198 { 2199 2200 return (EOPNOTSUPP); 2201 } 2202 2203 /* 2204 * Print out the contents of an nfsnode. 2205 */ 2206 int 2207 nfs_print(ap) 2208 struct vop_print_args /* { 2209 struct vnode *a_vp; 2210 } */ *ap; 2211 { 2212 register struct vnode *vp = ap->a_vp; 2213 register struct nfsnode *np = VTONFS(vp); 2214 2215 printf("tag VT_NFS, fileid %d fsid 0x%x", 2216 np->n_vattr.va_fileid, np->n_vattr.va_fsid); 2217 #ifdef FIFO 2218 if (vp->v_type == VFIFO) 2219 fifo_printinfo(vp); 2220 #endif /* FIFO */ 2221 printf("\n"); 2222 } 2223 2224 /* 2225 * NFS directory offset lookup. 2226 * Currently unsupported. 2227 */ 2228 int 2229 nfs_blkatoff(ap) 2230 struct vop_blkatoff_args /* { 2231 struct vnode *a_vp; 2232 off_t a_offset; 2233 char **a_res; 2234 struct buf **a_bpp; 2235 } */ *ap; 2236 { 2237 2238 return (EOPNOTSUPP); 2239 } 2240 2241 /* 2242 * NFS flat namespace allocation. 2243 * Currently unsupported. 2244 */ 2245 int 2246 nfs_valloc(ap) 2247 struct vop_valloc_args /* { 2248 struct vnode *a_pvp; 2249 int a_mode; 2250 struct ucred *a_cred; 2251 struct vnode **a_vpp; 2252 } */ *ap; 2253 { 2254 2255 return (EOPNOTSUPP); 2256 } 2257 2258 /* 2259 * NFS flat namespace free. 2260 * Currently unsupported. 2261 */ 2262 int 2263 nfs_vfree(ap) 2264 struct vop_vfree_args /* { 2265 struct vnode *a_pvp; 2266 ino_t a_ino; 2267 int a_mode; 2268 } */ *ap; 2269 { 2270 2271 return (EOPNOTSUPP); 2272 } 2273 2274 /* 2275 * NFS file truncation. 2276 */ 2277 int 2278 nfs_truncate(ap) 2279 struct vop_truncate_args /* { 2280 struct vnode *a_vp; 2281 off_t a_length; 2282 int a_flags; 2283 struct ucred *a_cred; 2284 struct proc *a_p; 2285 } */ *ap; 2286 { 2287 2288 /* Use nfs_setattr */ 2289 printf("nfs_truncate: need to implement!!"); 2290 return (EOPNOTSUPP); 2291 } 2292 2293 /* 2294 * NFS update. 2295 */ 2296 int 2297 nfs_update(ap) 2298 struct vop_update_args /* { 2299 struct vnode *a_vp; 2300 struct timeval *a_ta; 2301 struct timeval *a_tm; 2302 int a_waitfor; 2303 } */ *ap; 2304 { 2305 2306 /* Use nfs_setattr */ 2307 printf("nfs_update: need to implement!!"); 2308 return (EOPNOTSUPP); 2309 } 2310 2311 /* 2312 * nfs special file access vnode op. 2313 * Essentially just get vattr and then imitate iaccess() since the device is 2314 * local to the client. 2315 */ 2316 int 2317 nfsspec_access(ap) 2318 struct vop_access_args /* { 2319 struct vnode *a_vp; 2320 int a_mode; 2321 struct ucred *a_cred; 2322 struct proc *a_p; 2323 } */ *ap; 2324 { 2325 register struct vattr *vap; 2326 register gid_t *gp; 2327 register struct ucred *cred = ap->a_cred; 2328 mode_t mode = ap->a_mode; 2329 struct vattr vattr; 2330 register int i; 2331 int error; 2332 2333 /* 2334 * If you're the super-user, 2335 * you always get access. 2336 */ 2337 if (cred->cr_uid == 0) 2338 return (0); 2339 vap = &vattr; 2340 if (error = VOP_GETATTR(ap->a_vp, vap, cred, ap->a_p)) 2341 return (error); 2342 /* 2343 * Access check is based on only one of owner, group, public. 2344 * If not owner, then check group. If not a member of the 2345 * group, then check public access. 2346 */ 2347 if (cred->cr_uid != vap->va_uid) { 2348 mode >>= 3; 2349 gp = cred->cr_groups; 2350 for (i = 0; i < cred->cr_ngroups; i++, gp++) 2351 if (vap->va_gid == *gp) 2352 goto found; 2353 mode >>= 3; 2354 found: 2355 ; 2356 } 2357 if ((vap->va_mode & mode) != 0) 2358 return (0); 2359 return (EACCES); 2360 } 2361 2362 /* 2363 * Read wrapper for special devices. 2364 */ 2365 int 2366 nfsspec_read(ap) 2367 struct vop_read_args /* { 2368 struct vnode *a_vp; 2369 struct uio *a_uio; 2370 int a_ioflag; 2371 struct ucred *a_cred; 2372 } */ *ap; 2373 { 2374 register struct nfsnode *np = VTONFS(ap->a_vp); 2375 2376 /* 2377 * Set access flag. 2378 */ 2379 np->n_flag |= NACC; 2380 np->n_atim = time; 2381 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_read), ap)); 2382 } 2383 2384 /* 2385 * Write wrapper for special devices. 2386 */ 2387 int 2388 nfsspec_write(ap) 2389 struct vop_write_args /* { 2390 struct vnode *a_vp; 2391 struct uio *a_uio; 2392 int a_ioflag; 2393 struct ucred *a_cred; 2394 } */ *ap; 2395 { 2396 register struct nfsnode *np = VTONFS(ap->a_vp); 2397 2398 /* 2399 * Set update flag. 2400 */ 2401 np->n_flag |= NUPD; 2402 np->n_mtim = time; 2403 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_write), ap)); 2404 } 2405 2406 /* 2407 * Close wrapper for special devices. 2408 * 2409 * Update the times on the nfsnode then do device close. 2410 */ 2411 int 2412 nfsspec_close(ap) 2413 struct vop_close_args /* { 2414 struct vnode *a_vp; 2415 int a_fflag; 2416 struct ucred *a_cred; 2417 struct proc *a_p; 2418 } */ *ap; 2419 { 2420 register struct vnode *vp = ap->a_vp; 2421 register struct nfsnode *np = VTONFS(vp); 2422 struct vattr vattr; 2423 2424 if (np->n_flag & (NACC | NUPD)) { 2425 np->n_flag |= NCHG; 2426 if (vp->v_usecount == 1 && 2427 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 2428 VATTR_NULL(&vattr); 2429 if (np->n_flag & NACC) { 2430 vattr.va_atime.ts_sec = np->n_atim.tv_sec; 2431 vattr.va_atime.ts_nsec = 2432 np->n_atim.tv_usec * 1000; 2433 } 2434 if (np->n_flag & NUPD) { 2435 vattr.va_mtime.ts_sec = np->n_mtim.tv_sec; 2436 vattr.va_mtime.ts_nsec = 2437 np->n_mtim.tv_usec * 1000; 2438 } 2439 (void)VOP_SETATTR(vp, &vattr, ap->a_cred, ap->a_p); 2440 } 2441 } 2442 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_close), ap)); 2443 } 2444 2445 #ifdef FIFO 2446 /* 2447 * Read wrapper for fifos. 2448 */ 2449 int 2450 nfsfifo_read(ap) 2451 struct vop_read_args /* { 2452 struct vnode *a_vp; 2453 struct uio *a_uio; 2454 int a_ioflag; 2455 struct ucred *a_cred; 2456 } */ *ap; 2457 { 2458 extern int (**fifo_vnodeop_p)(); 2459 register struct nfsnode *np = VTONFS(ap->a_vp); 2460 2461 /* 2462 * Set access flag. 2463 */ 2464 np->n_flag |= NACC; 2465 np->n_atim = time; 2466 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), ap)); 2467 } 2468 2469 /* 2470 * Write wrapper for fifos. 2471 */ 2472 int 2473 nfsfifo_write(ap) 2474 struct vop_write_args /* { 2475 struct vnode *a_vp; 2476 struct uio *a_uio; 2477 int a_ioflag; 2478 struct ucred *a_cred; 2479 } */ *ap; 2480 { 2481 extern int (**fifo_vnodeop_p)(); 2482 register struct nfsnode *np = VTONFS(ap->a_vp); 2483 2484 /* 2485 * Set update flag. 2486 */ 2487 np->n_flag |= NUPD; 2488 np->n_mtim = time; 2489 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), ap)); 2490 } 2491 2492 /* 2493 * Close wrapper for fifos. 2494 * 2495 * Update the times on the nfsnode then do fifo close. 2496 */ 2497 int 2498 nfsfifo_close(ap) 2499 struct vop_close_args /* { 2500 struct vnode *a_vp; 2501 int a_fflag; 2502 struct ucred *a_cred; 2503 struct proc *a_p; 2504 } */ *ap; 2505 { 2506 register struct vnode *vp = ap->a_vp; 2507 register struct nfsnode *np = VTONFS(vp); 2508 struct vattr vattr; 2509 extern int (**fifo_vnodeop_p)(); 2510 2511 if (np->n_flag & (NACC | NUPD)) { 2512 if (np->n_flag & NACC) 2513 np->n_atim = time; 2514 if (np->n_flag & NUPD) 2515 np->n_mtim = time; 2516 np->n_flag |= NCHG; 2517 if (vp->v_usecount == 1 && 2518 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 2519 VATTR_NULL(&vattr); 2520 if (np->n_flag & NACC) { 2521 vattr.va_atime.ts_sec = np->n_atim.tv_sec; 2522 vattr.va_atime.ts_nsec = 2523 np->n_atim.tv_usec * 1000; 2524 } 2525 if (np->n_flag & NUPD) { 2526 vattr.va_mtime.ts_sec = np->n_mtim.tv_sec; 2527 vattr.va_mtime.ts_nsec = 2528 np->n_mtim.tv_usec * 1000; 2529 } 2530 (void)VOP_SETATTR(vp, &vattr, ap->a_cred, ap->a_p); 2531 } 2532 } 2533 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_close), ap)); 2534 } 2535 #endif /* FIFO */ 2536