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 7.93 (Berkeley) 09/30/92 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 buf nfs_bqueue; /* Queue head for nfsiod's */ 207 struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON]; 208 int nfs_numasync = 0; 209 #define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1)) 210 211 /* 212 * nfs null call from vfs. 213 */ 214 int 215 nfs_null(vp, cred, procp) 216 struct vnode *vp; 217 struct ucred *cred; 218 struct proc *procp; 219 { 220 caddr_t bpos, dpos; 221 int error = 0; 222 struct mbuf *mreq, *mrep, *md, *mb; 223 224 nfsm_reqhead(vp, NFSPROC_NULL, 0); 225 nfsm_request(vp, NFSPROC_NULL, procp, cred); 226 nfsm_reqdone; 227 return (error); 228 } 229 230 /* 231 * nfs access vnode op. 232 * For nfs, just return ok. File accesses may fail later. 233 * For nqnfs, use the access rpc to check accessibility. If file modes are 234 * changed on the server, accesses might still fail later. 235 */ 236 int 237 nfs_access(ap) 238 struct vop_access_args /* { 239 struct vnode *a_vp; 240 int a_mode; 241 struct ucred *a_cred; 242 struct proc *a_p; 243 } */ *ap; 244 { 245 register struct vnode *vp = ap->a_vp; 246 register u_long *tl; 247 register caddr_t cp; 248 caddr_t bpos, dpos; 249 int error = 0; 250 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 251 252 /* 253 * There is no way to check accessibility via. ordinary nfs, so if 254 * access isn't allowed they will get burned later. 255 */ 256 if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) { 257 nfsstats.rpccnt[NQNFSPROC_ACCESS]++; 258 nfsm_reqhead(vp, NQNFSPROC_ACCESS, NFSX_FH + 3 * NFSX_UNSIGNED); 259 nfsm_fhtom(vp); 260 nfsm_build(tl, u_long *, 3 * NFSX_UNSIGNED); 261 if (ap->a_mode & VREAD) 262 *tl++ = nfs_true; 263 else 264 *tl++ = nfs_false; 265 if (ap->a_mode & VWRITE) 266 *tl++ = nfs_true; 267 else 268 *tl++ = nfs_false; 269 if (ap->a_mode & VEXEC) 270 *tl = nfs_true; 271 else 272 *tl = nfs_false; 273 nfsm_request(vp, NQNFSPROC_ACCESS, ap->a_p, ap->a_cred); 274 nfsm_reqdone; 275 return (error); 276 } else 277 return (0); 278 } 279 280 /* 281 * nfs open vnode op 282 * Check to see if the type is ok 283 * and that deletion is not in progress. 284 * For paged in text files, you will need to flush the page cache 285 * if consistency is lost. 286 */ 287 /* ARGSUSED */ 288 int 289 nfs_open(ap) 290 struct vop_open_args /* { 291 struct vnode *a_vp; 292 int a_mode; 293 struct ucred *a_cred; 294 struct proc *a_p; 295 } */ *ap; 296 { 297 register struct vnode *vp = ap->a_vp; 298 struct nfsnode *np = VTONFS(vp); 299 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 300 struct vattr vattr; 301 int error; 302 303 if (vp->v_type != VREG && vp->v_type != VDIR && vp->v_type != VLNK) 304 return (EACCES); 305 if (vp->v_flag & VTEXT) { 306 /* 307 * Get a valid lease. If cached data is stale, flush it. 308 */ 309 if (nmp->nm_flag & NFSMNT_NQNFS) { 310 if (NQNFS_CKINVALID(vp, np, NQL_READ)) { 311 do { 312 error = nqnfs_getlease(vp, NQL_READ, ap->a_cred, ap->a_p); 313 } while (error == NQNFS_EXPIRED); 314 if (error) 315 return (error); 316 if (np->n_lrev != np->n_brev) { 317 np->n_flag &= ~NMODIFIED; 318 vinvalbuf(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 np->n_flag &= ~NMODIFIED; 326 vinvalbuf(vp, TRUE, ap->a_cred, ap->a_p); 327 (void) vnode_pager_uncache(vp); 328 np->n_attrstamp = 0; 329 np->n_direofoffset = 0; 330 if (error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p)) 331 return (error); 332 np->n_mtime = vattr.va_mtime.ts_sec; 333 } else { 334 if (error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p)) 335 return (error); 336 if (np->n_mtime != vattr.va_mtime.ts_sec) { 337 np->n_direofoffset = 0; 338 vinvalbuf(vp, TRUE, ap->a_cred, ap->a_p); 339 (void) vnode_pager_uncache(vp); 340 np->n_mtime = vattr.va_mtime.ts_sec; 341 } 342 } 343 } 344 } else if ((nmp->nm_flag & NFSMNT_NQNFS) == 0) 345 np->n_attrstamp = 0; /* For Open/Close consistency */ 346 return (0); 347 } 348 349 /* 350 * nfs close vnode op 351 * For reg files, invalidate any buffer cache entries. 352 */ 353 /* ARGSUSED */ 354 int 355 nfs_close(ap) 356 struct vop_close_args /* { 357 struct vnodeop_desc *a_desc; 358 struct vnode *a_vp; 359 int a_fflag; 360 struct ucred *a_cred; 361 struct proc *a_p; 362 } */ *ap; 363 { 364 register struct vnode *vp = ap->a_vp; 365 register struct nfsnode *np = VTONFS(vp); 366 int error = 0; 367 368 if (vp->v_type == VREG) { 369 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) == 0 && 370 (np->n_flag & NMODIFIED)) { 371 error = vinvalbuf(vp, TRUE, ap->a_cred, ap->a_p); 372 np->n_flag &= ~NMODIFIED; 373 np->n_attrstamp = 0; 374 } 375 if (np->n_flag & NWRITEERR) { 376 np->n_flag &= ~NWRITEERR; 377 error = np->n_error; 378 } 379 } 380 return (error); 381 } 382 383 /* 384 * nfs getattr call from vfs. 385 */ 386 int 387 nfs_getattr(ap) 388 struct vop_getattr_args /* { 389 struct vnode *a_vp; 390 struct vattr *a_vap; 391 struct ucred *a_cred; 392 struct proc *a_p; 393 } */ *ap; 394 { 395 register struct vnode *vp = ap->a_vp; 396 register struct nfsnode *np = VTONFS(vp); 397 register caddr_t cp; 398 caddr_t bpos, dpos; 399 int error = 0; 400 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 401 402 /* 403 * Update local times for special files. 404 */ 405 if (np->n_flag & (NACC | NUPD)) 406 np->n_flag |= NCHG; 407 /* 408 * First look in the cache. 409 */ 410 if (nfs_getattrcache(vp, ap->a_vap) == 0) 411 return (0); 412 nfsstats.rpccnt[NFSPROC_GETATTR]++; 413 nfsm_reqhead(vp, NFSPROC_GETATTR, NFSX_FH); 414 nfsm_fhtom(vp); 415 nfsm_request(vp, NFSPROC_GETATTR, ap->a_p, ap->a_cred); 416 nfsm_loadattr(vp, ap->a_vap); 417 nfsm_reqdone; 418 return (error); 419 } 420 421 /* 422 * nfs setattr call. 423 */ 424 int 425 nfs_setattr(ap) 426 struct vop_setattr_args /* { 427 struct vnodeop_desc *a_desc; 428 struct vnode *a_vp; 429 struct vattr *a_vap; 430 struct ucred *a_cred; 431 struct proc *a_p; 432 } */ *ap; 433 { 434 register struct nfsv2_sattr *sp; 435 register caddr_t cp; 436 register long t1; 437 caddr_t bpos, dpos, cp2; 438 u_long *tl; 439 int error = 0, isnq; 440 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 441 register struct vnode *vp = ap->a_vp; 442 register struct nfsnode *np = VTONFS(vp); 443 register struct vattr *vap = ap->a_vap; 444 u_quad_t frev; 445 446 nfsstats.rpccnt[NFSPROC_SETATTR]++; 447 isnq = (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS); 448 nfsm_reqhead(vp, NFSPROC_SETATTR, NFSX_FH+NFSX_SATTR(isnq)); 449 nfsm_fhtom(vp); 450 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 451 if (vap->va_mode == (u_short)-1) 452 sp->sa_mode = VNOVAL; 453 else 454 sp->sa_mode = vtonfs_mode(vp->v_type, vap->va_mode); 455 if (vap->va_uid == (uid_t)-1) 456 sp->sa_uid = VNOVAL; 457 else 458 sp->sa_uid = txdr_unsigned(vap->va_uid); 459 if (vap->va_gid == (gid_t)-1) 460 sp->sa_gid = VNOVAL; 461 else 462 sp->sa_gid = txdr_unsigned(vap->va_gid); 463 if (isnq) { 464 txdr_hyper(&vap->va_size, &sp->sa_nqsize); 465 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 466 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 467 sp->sa_nqflags = txdr_unsigned(vap->va_flags); 468 sp->sa_nqrdev = VNOVAL; 469 } else { 470 sp->sa_nfssize = txdr_unsigned(vap->va_size); 471 sp->sa_nfsatime.nfs_sec = txdr_unsigned(vap->va_atime.ts_sec); 472 sp->sa_nfsatime.nfs_usec = txdr_unsigned(vap->va_flags); 473 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 474 } 475 if (vap->va_size != VNOVAL || vap->va_mtime.ts_sec != VNOVAL || 476 vap->va_atime.ts_sec != VNOVAL) { 477 if (np->n_flag & NMODIFIED) { 478 if (vap->va_size == 0) 479 error = 480 vinvalbuf(vp, FALSE, ap->a_cred, ap->a_p); 481 else 482 error = 483 vinvalbuf(vp, TRUE, ap->a_cred, ap->a_p); 484 np->n_flag &= ~NMODIFIED; 485 } 486 if (vap->va_size != VNOVAL) 487 np->n_size = np->n_vattr.va_size = vap->va_size; 488 } 489 nfsm_request(vp, NFSPROC_SETATTR, ap->a_p, ap->a_cred); 490 nfsm_loadattr(vp, (struct vattr *)0); 491 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) && 492 NQNFS_CKCACHABLE(vp, NQL_WRITE)) { 493 nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED); 494 fxdr_hyper(tl, &frev); 495 if (frev > np->n_brev) 496 np->n_brev = frev; 497 } 498 nfsm_reqdone; 499 return (error); 500 } 501 502 /* 503 * nfs lookup call, one step at a time... 504 * First look in cache 505 * If not found, unlock the directory nfsnode and do the rpc 506 */ 507 int 508 nfs_lookup(ap) 509 struct vop_lookup_args /* { 510 struct vnodeop_desc *a_desc; 511 struct vnode *a_dvp; 512 struct vnode **a_vpp; 513 struct componentname *a_cnp; 514 } */ *ap; 515 { 516 register struct componentname *cnp = ap->a_cnp; 517 register struct vnode *dvp = ap->a_dvp; 518 register struct vnode **vpp = ap->a_vpp; 519 register int flags = cnp->cn_flags; 520 register struct vnode *vdp; 521 register u_long *tl; 522 register caddr_t cp; 523 register long t1, t2; 524 struct nfsmount *nmp; 525 struct nfsnode *tp; 526 caddr_t bpos, dpos, cp2; 527 time_t reqtime; 528 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 529 struct vnode *newvp; 530 long len; 531 nfsv2fh_t *fhp; 532 struct nfsnode *np; 533 int lockparent, wantparent, error = 0; 534 int nqlflag, cachable; 535 u_quad_t frev; 536 537 *vpp = NULL; 538 if (dvp->v_type != VDIR) 539 return (ENOTDIR); 540 lockparent = flags & LOCKPARENT; 541 wantparent = flags & (LOCKPARENT|WANTPARENT); 542 nmp = VFSTONFS(dvp->v_mount); 543 np = VTONFS(dvp); 544 if ((error = cache_lookup(dvp, vpp, cnp)) && error != ENOENT) { 545 struct vattr vattr; 546 int vpid; 547 548 vdp = *vpp; 549 vpid = vdp->v_id; 550 /* 551 * See the comment starting `Step through' in ufs/ufs_lookup.c 552 * for an explanation of the locking protocol 553 */ 554 if (dvp == vdp) { 555 VREF(vdp); 556 error = 0; 557 } else 558 error = vget(vdp); 559 if (!error) { 560 if (vpid == vdp->v_id) { 561 if (nmp->nm_flag & NFSMNT_NQNFS) { 562 if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) == 0) { 563 nfsstats.lookupcache_hits++; 564 if (cnp->cn_nameiop != LOOKUP && 565 (flags & ISLASTCN)) 566 cnp->cn_flags |= SAVENAME; 567 return (0); 568 } else if (NQNFS_CKCACHABLE(dvp, NQL_READ)) { 569 if (np->n_lrev != np->n_brev || 570 (np->n_flag & NMODIFIED)) { 571 np->n_direofoffset = 0; 572 cache_purge(dvp); 573 error = vinvalbuf(dvp, FALSE, 574 cnp->cn_cred, cnp->cn_proc); 575 np->n_flag &= ~NMODIFIED; 576 np->n_brev = np->n_lrev; 577 } else { 578 nfsstats.lookupcache_hits++; 579 if (cnp->cn_nameiop != LOOKUP && 580 (flags & ISLASTCN)) 581 cnp->cn_flags |= SAVENAME; 582 return (0); 583 } 584 } 585 } else if (!VOP_GETATTR(vdp, &vattr, cnp->cn_cred, cnp->cn_proc) && 586 vattr.va_ctime.ts_sec == VTONFS(vdp)->n_ctime) { 587 nfsstats.lookupcache_hits++; 588 if (cnp->cn_nameiop != LOOKUP && 589 (flags & ISLASTCN)) 590 cnp->cn_flags |= SAVENAME; 591 return (0); 592 } 593 cache_purge(vdp); 594 } 595 vrele(vdp); 596 } 597 *vpp = NULLVP; 598 } 599 error = 0; 600 nfsstats.lookupcache_misses++; 601 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 602 len = cnp->cn_namelen; 603 nfsm_reqhead(dvp, NFSPROC_LOOKUP, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 604 605 /* 606 * For nqnfs optionally piggyback a getlease request for the name 607 * being looked up. 608 */ 609 if (nmp->nm_flag & NFSMNT_NQNFS) { 610 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 611 if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) && 612 ((cnp->cn_flags & MAKEENTRY) && 613 (cnp->cn_nameiop != DELETE || !(flags & ISLASTCN)))) 614 *tl = txdr_unsigned(nmp->nm_leaseterm); 615 else 616 *tl = 0; 617 } 618 nfsm_fhtom(dvp); 619 nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN); 620 reqtime = time.tv_sec; 621 nfsm_request(dvp, NFSPROC_LOOKUP, cnp->cn_proc, cnp->cn_cred); 622 nfsmout: 623 if (error) { 624 if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME) && 625 (flags & ISLASTCN) && error == ENOENT) 626 error = EJUSTRETURN; 627 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)) 628 cnp->cn_flags |= SAVENAME; 629 return (error); 630 } 631 if (nmp->nm_flag & NFSMNT_NQNFS) { 632 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 633 if (*tl) { 634 nqlflag = fxdr_unsigned(int, *tl); 635 nfsm_dissect(tl, u_long *, 4*NFSX_UNSIGNED); 636 cachable = fxdr_unsigned(int, *tl++); 637 reqtime += fxdr_unsigned(int, *tl++); 638 fxdr_hyper(tl, &frev); 639 } else 640 nqlflag = 0; 641 } 642 nfsm_dissect(fhp, nfsv2fh_t *, NFSX_FH); 643 644 /* 645 * Handle RENAME case... 646 */ 647 if (cnp->cn_nameiop == RENAME && wantparent && (flags & ISLASTCN)) { 648 if (!bcmp(np->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 649 m_freem(mrep); 650 return (EISDIR); 651 } 652 if (error = nfs_nget(dvp->v_mount, fhp, &np)) { 653 m_freem(mrep); 654 return (error); 655 } 656 newvp = NFSTOV(np); 657 if (error = 658 nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) { 659 vrele(newvp); 660 m_freem(mrep); 661 return (error); 662 } 663 *vpp = newvp; 664 m_freem(mrep); 665 cnp->cn_flags |= SAVENAME; 666 return (0); 667 } 668 669 if (!bcmp(np->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 670 VREF(dvp); 671 newvp = dvp; 672 } else { 673 if (error = nfs_nget(dvp->v_mount, fhp, &np)) { 674 m_freem(mrep); 675 return (error); 676 } 677 newvp = NFSTOV(np); 678 } 679 if (error = nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) { 680 vrele(newvp); 681 m_freem(mrep); 682 return (error); 683 } 684 m_freem(mrep); 685 *vpp = newvp; 686 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)) 687 cnp->cn_flags |= SAVENAME; 688 if ((cnp->cn_flags & MAKEENTRY) && 689 (cnp->cn_nameiop != DELETE || !(flags & ISLASTCN))) { 690 if ((nmp->nm_flag & NFSMNT_NQNFS) == 0) 691 np->n_ctime = np->n_vattr.va_ctime.ts_sec; 692 else if (nqlflag && reqtime > time.tv_sec) 693 nqnfs_clientlease(nmp, np, nqlflag, cachable, reqtime, 694 frev); 695 cache_enter(dvp, *vpp, cnp); 696 } 697 return (0); 698 } 699 700 /* 701 * nfs read call. 702 * Just call nfs_bioread() to do the work. 703 */ 704 int 705 nfs_read(ap) 706 struct vop_read_args /* { 707 struct vnode *a_vp; 708 struct uio *a_uio; 709 int a_ioflag; 710 struct ucred *a_cred; 711 } */ *ap; 712 { 713 register struct vnode *vp = ap->a_vp; 714 715 if (vp->v_type != VREG) 716 return (EPERM); 717 return (nfs_bioread(vp, ap->a_uio, ap->a_ioflag, ap->a_cred)); 718 } 719 720 /* 721 * nfs readlink call 722 */ 723 int 724 nfs_readlink(ap) 725 struct vop_readlink_args /* { 726 struct vnode *a_vp; 727 struct uio *a_uio; 728 struct ucred *a_cred; 729 } */ *ap; 730 { 731 register struct vnode *vp = ap->a_vp; 732 733 if (vp->v_type != VLNK) 734 return (EPERM); 735 return (nfs_bioread(vp, ap->a_uio, 0, ap->a_cred)); 736 } 737 738 /* 739 * Do a readlink rpc. 740 * Called by nfs_doio() from below the buffer cache. 741 */ 742 int 743 nfs_readlinkrpc(vp, uiop, cred) 744 register struct vnode *vp; 745 struct uio *uiop; 746 struct ucred *cred; 747 { 748 register u_long *tl; 749 register caddr_t cp; 750 register long t1; 751 caddr_t bpos, dpos, cp2; 752 int error = 0; 753 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 754 long len; 755 756 nfsstats.rpccnt[NFSPROC_READLINK]++; 757 nfsm_reqhead(vp, NFSPROC_READLINK, NFSX_FH); 758 nfsm_fhtom(vp); 759 nfsm_request(vp, NFSPROC_READLINK, uiop->uio_procp, cred); 760 nfsm_strsiz(len, NFS_MAXPATHLEN); 761 nfsm_mtouio(uiop, len); 762 nfsm_reqdone; 763 return (error); 764 } 765 766 /* 767 * nfs read rpc call 768 * Ditto above 769 */ 770 int 771 nfs_readrpc(vp, uiop, cred) 772 register struct vnode *vp; 773 struct uio *uiop; 774 struct ucred *cred; 775 { 776 register u_long *tl; 777 register caddr_t cp; 778 register long t1; 779 caddr_t bpos, dpos, cp2; 780 int error = 0; 781 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 782 struct nfsmount *nmp; 783 long len, retlen, tsiz; 784 785 nmp = VFSTONFS(vp->v_mount); 786 tsiz = uiop->uio_resid; 787 if (uiop->uio_offset + tsiz > 0xffffffff && 788 (nmp->nm_flag & NFSMNT_NQNFS) == 0) 789 return (EFBIG); 790 while (tsiz > 0) { 791 nfsstats.rpccnt[NFSPROC_READ]++; 792 len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz; 793 nfsm_reqhead(vp, NFSPROC_READ, NFSX_FH+NFSX_UNSIGNED*3); 794 nfsm_fhtom(vp); 795 nfsm_build(tl, u_long *, NFSX_UNSIGNED*3); 796 if (nmp->nm_flag & NFSMNT_NQNFS) { 797 txdr_hyper(&uiop->uio_offset, tl); 798 *(tl + 2) = txdr_unsigned(len); 799 } else { 800 *tl++ = txdr_unsigned(uiop->uio_offset); 801 *tl++ = txdr_unsigned(len); 802 *tl = 0; 803 } 804 nfsm_request(vp, NFSPROC_READ, uiop->uio_procp, cred); 805 nfsm_loadattr(vp, (struct vattr *)0); 806 nfsm_strsiz(retlen, nmp->nm_rsize); 807 nfsm_mtouio(uiop, retlen); 808 m_freem(mrep); 809 if (retlen < len) 810 tsiz = 0; 811 else 812 tsiz -= len; 813 } 814 nfsmout: 815 return (error); 816 } 817 818 /* 819 * nfs write call 820 */ 821 int 822 nfs_writerpc(vp, uiop, cred, ioflags) 823 register struct vnode *vp; 824 struct uio *uiop; 825 struct ucred *cred; 826 int ioflags; 827 { 828 register u_long *tl; 829 register caddr_t cp; 830 register long t1; 831 caddr_t bpos, dpos, cp2; 832 int error = 0; 833 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 834 struct nfsmount *nmp; 835 struct nfsnode *np = VTONFS(vp); 836 u_quad_t frev; 837 long len, tsiz; 838 839 nmp = VFSTONFS(vp->v_mount); 840 tsiz = uiop->uio_resid; 841 if (uiop->uio_offset + tsiz > 0xffffffff && 842 (nmp->nm_flag & NFSMNT_NQNFS) == 0) 843 return (EFBIG); 844 while (tsiz > 0) { 845 nfsstats.rpccnt[NFSPROC_WRITE]++; 846 len = (tsiz > nmp->nm_wsize) ? nmp->nm_wsize : tsiz; 847 nfsm_reqhead(vp, NFSPROC_WRITE, 848 NFSX_FH+NFSX_UNSIGNED*4+nfsm_rndup(len)); 849 nfsm_fhtom(vp); 850 nfsm_build(tl, u_long *, NFSX_UNSIGNED * 4); 851 if (nmp->nm_flag & NFSMNT_NQNFS) { 852 txdr_hyper(&uiop->uio_offset, tl); 853 tl += 2; 854 if (ioflags & IO_APPEND) 855 *tl++ = txdr_unsigned(1); 856 else 857 *tl++ = 0; 858 } else { 859 *++tl = txdr_unsigned(uiop->uio_offset); 860 tl += 2; 861 } 862 *tl = txdr_unsigned(len); 863 nfsm_uiotom(uiop, len); 864 nfsm_request(vp, NFSPROC_WRITE, uiop->uio_procp, cred); 865 nfsm_loadattr(vp, (struct vattr *)0); 866 if (nmp->nm_flag & NFSMNT_MYWRITE) 867 VTONFS(vp)->n_mtime = VTONFS(vp)->n_vattr.va_mtime.ts_sec; 868 else if ((nmp->nm_flag & NFSMNT_NQNFS) && 869 NQNFS_CKCACHABLE(vp, NQL_WRITE)) { 870 nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED); 871 fxdr_hyper(tl, &frev); 872 if (frev > np->n_brev) 873 np->n_brev = frev; 874 } 875 m_freem(mrep); 876 tsiz -= len; 877 } 878 nfsmout: 879 if (error) 880 uiop->uio_resid = tsiz; 881 return (error); 882 } 883 884 /* 885 * nfs mknod call 886 * This is a kludge. Use a create rpc but with the IFMT bits of the mode 887 * set to specify the file type and the size field for rdev. 888 */ 889 /* ARGSUSED */ 890 int 891 nfs_mknod(ap) 892 struct vop_mknod_args /* { 893 struct vnode *a_dvp; 894 struct vnode **a_vpp; 895 struct componentname *a_cnp; 896 struct vattr *a_vap; 897 } */ *ap; 898 { 899 register struct vnode *dvp = ap->a_dvp; 900 register struct vattr *vap = ap->a_vap; 901 register struct componentname *cnp = ap->a_cnp; 902 register struct nfsv2_sattr *sp; 903 register u_long *tl; 904 register caddr_t cp; 905 register long t1, t2; 906 struct vnode *newvp; 907 char *cp2; 908 caddr_t bpos, dpos; 909 int error = 0, isnq; 910 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 911 u_long rdev; 912 913 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 914 if (vap->va_type == VCHR || vap->va_type == VBLK) 915 rdev = txdr_unsigned(vap->va_rdev); 916 #ifdef FIFO 917 else if (vap->va_type == VFIFO) 918 rdev = 0xffffffff; 919 #endif /* FIFO */ 920 else { 921 VOP_ABORTOP(dvp, cnp); 922 vput(dvp); 923 return (EOPNOTSUPP); 924 } 925 nfsstats.rpccnt[NFSPROC_CREATE]++; 926 nfsm_reqhead(dvp, NFSPROC_CREATE, 927 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)+NFSX_SATTR(isnq)); 928 nfsm_fhtom(dvp); 929 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 930 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 931 sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode); 932 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 933 sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid); 934 if (isnq) { 935 sp->sa_nqrdev = rdev; 936 sp->sa_nqflags = 0; 937 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 938 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 939 } else { 940 sp->sa_nfssize = rdev; 941 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 942 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 943 } 944 nfsm_request(dvp, NFSPROC_CREATE, cnp->cn_proc, cnp->cn_cred); 945 nfsm_mtofh(dvp, newvp); 946 nfsm_reqdone; 947 if (!error) 948 cache_enter(dvp, newvp, cnp); 949 FREE(cnp->cn_pnbuf, M_NAMEI); 950 VTONFS(dvp)->n_flag |= NMODIFIED; 951 vrele(dvp); 952 return (error); 953 } 954 955 /* 956 * nfs file create call 957 */ 958 int 959 nfs_create(ap) 960 struct vop_create_args /* { 961 struct vnode *a_dvp; 962 struct vnode **a_vpp; 963 struct componentname *a_cnp; 964 struct vattr *a_vap; 965 } */ *ap; 966 { 967 register struct vnode *dvp = ap->a_dvp; 968 register struct vattr *vap = ap->a_vap; 969 register struct componentname *cnp = ap->a_cnp; 970 register struct nfsv2_sattr *sp; 971 register u_long *tl; 972 register caddr_t cp; 973 register long t1, t2; 974 caddr_t bpos, dpos, cp2; 975 int error = 0, isnq; 976 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 977 978 nfsstats.rpccnt[NFSPROC_CREATE]++; 979 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 980 nfsm_reqhead(dvp, NFSPROC_CREATE, 981 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)+NFSX_SATTR(isnq)); 982 nfsm_fhtom(dvp); 983 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 984 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 985 sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode); 986 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 987 sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid); 988 if (isnq) { 989 u_quad_t qval = 0; 990 991 txdr_hyper(&qval, &sp->sa_nqsize); 992 sp->sa_nqflags = 0; 993 sp->sa_nqrdev = -1; 994 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 995 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 996 } else { 997 sp->sa_nfssize = 0; 998 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 999 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 1000 } 1001 nfsm_request(dvp, NFSPROC_CREATE, cnp->cn_proc, cnp->cn_cred); 1002 nfsm_mtofh(dvp, *ap->a_vpp); 1003 nfsm_reqdone; 1004 if (!error) 1005 cache_enter(dvp, *ap->a_vpp, cnp); 1006 FREE(cnp->cn_pnbuf, M_NAMEI); 1007 VTONFS(dvp)->n_flag |= NMODIFIED; 1008 vrele(dvp); 1009 return (error); 1010 } 1011 1012 /* 1013 * nfs file remove call 1014 * To try and make nfs semantics closer to ufs semantics, a file that has 1015 * other processes using the vnode is renamed instead of removed and then 1016 * removed later on the last close. 1017 * - If v_usecount > 1 1018 * If a rename is not already in the works 1019 * call nfs_sillyrename() to set it up 1020 * else 1021 * do the remove rpc 1022 */ 1023 int 1024 nfs_remove(ap) 1025 struct vop_remove_args /* { 1026 struct vnodeop_desc *a_desc; 1027 struct vnode * a_dvp; 1028 struct vnode * a_vp; 1029 struct componentname * a_cnp; 1030 } */ *ap; 1031 { 1032 register struct vnode *vp = ap->a_vp; 1033 register struct vnode *dvp = ap->a_dvp; 1034 register struct componentname *cnp = ap->a_cnp; 1035 register struct nfsnode *np = VTONFS(vp); 1036 register u_long *tl; 1037 register caddr_t cp; 1038 register long t2; 1039 caddr_t bpos, dpos; 1040 int error = 0; 1041 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1042 1043 if (vp->v_usecount > 1) { 1044 if (!np->n_sillyrename) 1045 error = nfs_sillyrename(dvp, vp, cnp); 1046 } else { 1047 /* 1048 * Purge the name cache so that the chance of a lookup for 1049 * the name succeeding while the remove is in progress is 1050 * minimized. Without node locking it can still happen, such 1051 * that an I/O op returns ESTALE, but since you get this if 1052 * another host removes the file.. 1053 */ 1054 cache_purge(vp); 1055 /* 1056 * Throw away biocache buffers. Mainly to avoid 1057 * unnecessary delayed writes. 1058 */ 1059 error = vinvalbuf(vp, FALSE, cnp->cn_cred, cnp->cn_proc); 1060 /* Do the rpc */ 1061 nfsstats.rpccnt[NFSPROC_REMOVE]++; 1062 nfsm_reqhead(dvp, NFSPROC_REMOVE, 1063 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)); 1064 nfsm_fhtom(dvp); 1065 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1066 nfsm_request(dvp, NFSPROC_REMOVE, cnp->cn_proc, cnp->cn_cred); 1067 nfsm_reqdone; 1068 FREE(cnp->cn_pnbuf, M_NAMEI); 1069 VTONFS(dvp)->n_flag |= NMODIFIED; 1070 /* 1071 * Kludge City: If the first reply to the remove rpc is lost.. 1072 * the reply to the retransmitted request will be ENOENT 1073 * since the file was in fact removed 1074 * Therefore, we cheat and return success. 1075 */ 1076 if (error == ENOENT) 1077 error = 0; 1078 } 1079 np->n_attrstamp = 0; 1080 vrele(dvp); 1081 vrele(vp); 1082 return (error); 1083 } 1084 1085 /* 1086 * nfs file remove rpc called from nfs_inactive 1087 */ 1088 int 1089 nfs_removeit(sp) 1090 register struct sillyrename *sp; 1091 { 1092 register u_long *tl; 1093 register caddr_t cp; 1094 register long t2; 1095 caddr_t bpos, dpos; 1096 int error = 0; 1097 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1098 1099 nfsstats.rpccnt[NFSPROC_REMOVE]++; 1100 nfsm_reqhead(sp->s_dvp, NFSPROC_REMOVE, 1101 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(sp->s_namlen)); 1102 nfsm_fhtom(sp->s_dvp); 1103 nfsm_strtom(sp->s_name, sp->s_namlen, NFS_MAXNAMLEN); 1104 nfsm_request(sp->s_dvp, NFSPROC_REMOVE, NULL, sp->s_cred); 1105 nfsm_reqdone; 1106 VTONFS(sp->s_dvp)->n_flag |= NMODIFIED; 1107 return (error); 1108 } 1109 1110 /* 1111 * nfs file rename call 1112 */ 1113 int 1114 nfs_rename(ap) 1115 struct vop_rename_args /* { 1116 struct vnode *a_fdvp; 1117 struct vnode *a_fvp; 1118 struct componentname *a_fcnp; 1119 struct vnode *a_tdvp; 1120 struct vnode *a_tvp; 1121 struct componentname *a_tcnp; 1122 } */ *ap; 1123 { 1124 register struct vnode *fvp = ap->a_fvp; 1125 register struct vnode *tvp = ap->a_tvp; 1126 register struct vnode *fdvp = ap->a_fdvp; 1127 register struct vnode *tdvp = ap->a_tdvp; 1128 register struct componentname *tcnp = ap->a_tcnp; 1129 register struct componentname *fcnp = ap->a_fcnp; 1130 register u_long *tl; 1131 register caddr_t cp; 1132 register long t2; 1133 caddr_t bpos, dpos; 1134 int error = 0; 1135 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1136 1137 /* Check for cross-device rename */ 1138 if ((fvp->v_mount != tdvp->v_mount) || 1139 (tvp && (fvp->v_mount != tvp->v_mount))) { 1140 error = EXDEV; 1141 goto out; 1142 } 1143 1144 1145 nfsstats.rpccnt[NFSPROC_RENAME]++; 1146 nfsm_reqhead(fdvp, NFSPROC_RENAME, 1147 (NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(fcnp->cn_namelen)+ 1148 nfsm_rndup(fcnp->cn_namelen)); /* or fcnp->cn_cred?*/ 1149 nfsm_fhtom(fdvp); 1150 nfsm_strtom(fcnp->cn_nameptr, fcnp->cn_namelen, NFS_MAXNAMLEN); 1151 nfsm_fhtom(tdvp); 1152 nfsm_strtom(tcnp->cn_nameptr, tcnp->cn_namelen, NFS_MAXNAMLEN); 1153 nfsm_request(fdvp, NFSPROC_RENAME, tcnp->cn_proc, tcnp->cn_cred); 1154 nfsm_reqdone; 1155 VTONFS(fdvp)->n_flag |= NMODIFIED; 1156 VTONFS(tdvp)->n_flag |= NMODIFIED; 1157 if (fvp->v_type == VDIR) { 1158 if (tvp != NULL && tvp->v_type == VDIR) 1159 cache_purge(tdvp); 1160 cache_purge(fdvp); 1161 } 1162 out: 1163 if (tdvp == tvp) 1164 vrele(tdvp); 1165 else 1166 vput(tdvp); 1167 if (tvp) 1168 vput(tvp); 1169 vrele(fdvp); 1170 vrele(fvp); 1171 /* 1172 * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry. 1173 */ 1174 if (error == ENOENT) 1175 error = 0; 1176 return (error); 1177 } 1178 1179 /* 1180 * nfs file rename rpc called from nfs_remove() above 1181 */ 1182 int 1183 nfs_renameit(sdvp, scnp, sp) 1184 struct vnode *sdvp; 1185 struct componentname *scnp; 1186 register struct sillyrename *sp; 1187 { 1188 register u_long *tl; 1189 register caddr_t cp; 1190 register long t2; 1191 caddr_t bpos, dpos; 1192 int error = 0; 1193 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1194 1195 nfsstats.rpccnt[NFSPROC_RENAME]++; 1196 nfsm_reqhead(sdvp, NFSPROC_RENAME, 1197 (NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(scnp->cn_namelen)+ 1198 nfsm_rndup(sp->s_namlen)); 1199 nfsm_fhtom(sdvp); 1200 nfsm_strtom(scnp->cn_nameptr, scnp->cn_namelen, NFS_MAXNAMLEN); 1201 nfsm_fhtom(sdvp); 1202 nfsm_strtom(sp->s_name, sp->s_namlen, NFS_MAXNAMLEN); 1203 nfsm_request(sdvp, NFSPROC_RENAME, scnp->cn_proc, scnp->cn_cred); 1204 nfsm_reqdone; 1205 FREE(scnp->cn_pnbuf, M_NAMEI); 1206 VTONFS(sdvp)->n_flag |= NMODIFIED; 1207 return (error); 1208 } 1209 1210 /* 1211 * nfs hard link create call 1212 */ 1213 int 1214 nfs_link(ap) 1215 struct vop_link_args /* { 1216 struct vnode *a_vp; 1217 struct vnode *a_tdvp; 1218 struct componentname *a_cnp; 1219 } */ *ap; 1220 { 1221 register struct vnode *vp = ap->a_vp; 1222 register struct vnode *tdvp = ap->a_tdvp; 1223 register struct componentname *cnp = ap->a_cnp; 1224 register u_long *tl; 1225 register caddr_t cp; 1226 register long t2; 1227 caddr_t bpos, dpos; 1228 int error = 0; 1229 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1230 1231 if (vp->v_mount != tdvp->v_mount) { 1232 /*VOP_ABORTOP(vp, cnp);*/ 1233 if (tdvp == vp) 1234 vrele(vp); 1235 else 1236 vput(vp); 1237 return (EXDEV); 1238 } 1239 1240 nfsstats.rpccnt[NFSPROC_LINK]++; 1241 nfsm_reqhead(tdvp, NFSPROC_LINK, 1242 NFSX_FH*2+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)); 1243 nfsm_fhtom(tdvp); 1244 nfsm_fhtom(vp); 1245 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1246 nfsm_request(tdvp, NFSPROC_LINK, cnp->cn_proc, cnp->cn_cred); 1247 nfsm_reqdone; 1248 FREE(cnp->cn_pnbuf, M_NAMEI); 1249 VTONFS(tdvp)->n_attrstamp = 0; 1250 VTONFS(vp)->n_flag |= NMODIFIED; 1251 vrele(vp); 1252 /* 1253 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 1254 */ 1255 if (error == EEXIST) 1256 error = 0; 1257 return (error); 1258 } 1259 1260 /* 1261 * nfs symbolic link create call 1262 */ 1263 /* start here */ 1264 int 1265 nfs_symlink(ap) 1266 struct vop_symlink_args /* { 1267 struct vnode *a_dvp; 1268 struct vnode **a_vpp; 1269 struct componentname *a_cnp; 1270 struct vattr *a_vap; 1271 char *a_target; 1272 } */ *ap; 1273 { 1274 register struct vnode *dvp = ap->a_dvp; 1275 register struct vattr *vap = ap->a_vap; 1276 register struct componentname *cnp = ap->a_cnp; 1277 register struct nfsv2_sattr *sp; 1278 register u_long *tl; 1279 register caddr_t cp; 1280 register long t2; 1281 caddr_t bpos, dpos; 1282 int slen, error = 0, isnq; 1283 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1284 1285 nfsstats.rpccnt[NFSPROC_SYMLINK]++; 1286 slen = strlen(ap->a_target); 1287 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 1288 nfsm_reqhead(dvp, NFSPROC_SYMLINK, NFSX_FH+2*NFSX_UNSIGNED+ 1289 nfsm_rndup(cnp->cn_namelen)+nfsm_rndup(slen)+NFSX_SATTR(isnq)); 1290 nfsm_fhtom(dvp); 1291 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1292 nfsm_strtom(ap->a_target, slen, NFS_MAXPATHLEN); 1293 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 1294 sp->sa_mode = vtonfs_mode(VLNK, vap->va_mode); 1295 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 1296 sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid); 1297 if (isnq) { 1298 quad_t qval = -1; 1299 1300 txdr_hyper(&qval, &sp->sa_nqsize); 1301 sp->sa_nqflags = 0; 1302 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 1303 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 1304 } else { 1305 sp->sa_nfssize = -1; 1306 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 1307 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 1308 } 1309 nfsm_request(dvp, NFSPROC_SYMLINK, cnp->cn_proc, cnp->cn_cred); 1310 nfsm_reqdone; 1311 FREE(cnp->cn_pnbuf, M_NAMEI); 1312 VTONFS(dvp)->n_flag |= NMODIFIED; 1313 vrele(dvp); 1314 /* 1315 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 1316 */ 1317 if (error == EEXIST) 1318 error = 0; 1319 return (error); 1320 } 1321 1322 /* 1323 * nfs make dir call 1324 */ 1325 int 1326 nfs_mkdir(ap) 1327 struct vop_mkdir_args /* { 1328 struct vnode *a_dvp; 1329 struct vnode **a_vpp; 1330 struct componentname *a_cnp; 1331 struct vattr *a_vap; 1332 } */ *ap; 1333 { 1334 register struct vnode *dvp = ap->a_dvp; 1335 register struct vattr *vap = ap->a_vap; 1336 register struct componentname *cnp = ap->a_cnp; 1337 register struct vnode **vpp = ap->a_vpp; 1338 register struct nfsv2_sattr *sp; 1339 register u_long *tl; 1340 register caddr_t cp; 1341 register long t1, t2; 1342 register int len; 1343 caddr_t bpos, dpos, cp2; 1344 int error = 0, firsttry = 1, isnq; 1345 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1346 1347 len = cnp->cn_namelen; 1348 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 1349 nfsstats.rpccnt[NFSPROC_MKDIR]++; 1350 nfsm_reqhead(dvp, NFSPROC_MKDIR, 1351 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)+NFSX_SATTR(isnq)); 1352 nfsm_fhtom(dvp); 1353 nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN); 1354 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 1355 sp->sa_mode = vtonfs_mode(VDIR, vap->va_mode); 1356 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 1357 sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid); 1358 if (isnq) { 1359 quad_t qval = -1; 1360 1361 txdr_hyper(&qval, &sp->sa_nqsize); 1362 sp->sa_nqflags = 0; 1363 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 1364 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 1365 } else { 1366 sp->sa_nfssize = -1; 1367 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 1368 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 1369 } 1370 nfsm_request(dvp, NFSPROC_MKDIR, cnp->cn_proc, cnp->cn_cred); 1371 nfsm_mtofh(dvp, *vpp); 1372 nfsm_reqdone; 1373 VTONFS(dvp)->n_flag |= NMODIFIED; 1374 /* 1375 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry 1376 * if we can succeed in looking up the directory. 1377 * "firsttry" is necessary since the macros may "goto nfsmout" which 1378 * is above the if on errors. (Ugh) 1379 */ 1380 if (error == EEXIST && firsttry) { 1381 firsttry = 0; 1382 error = 0; 1383 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 1384 *vpp = NULL; 1385 nfsm_reqhead(dvp, NFSPROC_LOOKUP, 1386 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 1387 nfsm_fhtom(dvp); 1388 nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN); 1389 nfsm_request(dvp, NFSPROC_LOOKUP, cnp->cn_proc, cnp->cn_cred); 1390 nfsm_mtofh(dvp, *vpp); 1391 if ((*vpp)->v_type != VDIR) { 1392 vput(*vpp); 1393 error = EEXIST; 1394 } 1395 m_freem(mrep); 1396 } 1397 FREE(cnp->cn_pnbuf, M_NAMEI); 1398 vrele(dvp); 1399 return (error); 1400 } 1401 1402 /* 1403 * nfs remove directory call 1404 */ 1405 int 1406 nfs_rmdir(ap) 1407 struct vop_rmdir_args /* { 1408 struct vnode *a_dvp; 1409 struct vnode *a_vp; 1410 struct componentname *a_cnp; 1411 } */ *ap; 1412 { 1413 register struct vnode *vp = ap->a_vp; 1414 register struct vnode *dvp = ap->a_dvp; 1415 register struct componentname *cnp = ap->a_cnp; 1416 register u_long *tl; 1417 register caddr_t cp; 1418 register long t2; 1419 caddr_t bpos, dpos; 1420 int error = 0; 1421 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1422 1423 if (dvp == vp) { 1424 vrele(dvp); 1425 vrele(dvp); 1426 FREE(cnp->cn_pnbuf, M_NAMEI); 1427 return (EINVAL); 1428 } 1429 nfsstats.rpccnt[NFSPROC_RMDIR]++; 1430 nfsm_reqhead(dvp, NFSPROC_RMDIR, 1431 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)); 1432 nfsm_fhtom(dvp); 1433 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1434 nfsm_request(dvp, NFSPROC_RMDIR, cnp->cn_proc, cnp->cn_cred); 1435 nfsm_reqdone; 1436 FREE(cnp->cn_pnbuf, M_NAMEI); 1437 VTONFS(dvp)->n_flag |= NMODIFIED; 1438 cache_purge(dvp); 1439 cache_purge(vp); 1440 vrele(vp); 1441 vrele(dvp); 1442 /* 1443 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 1444 */ 1445 if (error == ENOENT) 1446 error = 0; 1447 return (error); 1448 } 1449 1450 /* 1451 * nfs readdir call 1452 * Although cookie is defined as opaque, I translate it to/from net byte 1453 * order so that it looks more sensible. This appears consistent with the 1454 * Ultrix implementation of NFS. 1455 */ 1456 int 1457 nfs_readdir(ap) 1458 struct vop_readdir_args /* { 1459 struct vnode *a_vp; 1460 struct uio *a_uio; 1461 struct ucred *a_cred; 1462 } */ *ap; 1463 { 1464 register struct vnode *vp = ap->a_vp; 1465 register struct nfsnode *np = VTONFS(vp); 1466 register struct uio *uio = ap->a_uio; 1467 int tresid, error; 1468 struct vattr vattr; 1469 1470 if (vp->v_type != VDIR) 1471 return (EPERM); 1472 /* 1473 * First, check for hit on the EOF offset cache 1474 */ 1475 if (uio->uio_offset != 0 && uio->uio_offset == np->n_direofoffset && 1476 (np->n_flag & NMODIFIED) == 0) { 1477 if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) { 1478 if (NQNFS_CKCACHABLE(vp, NQL_READ)) { 1479 nfsstats.direofcache_hits++; 1480 return (0); 1481 } 1482 } else if (VOP_GETATTR(vp, &vattr, ap->a_cred, uio->uio_procp) == 0 && 1483 np->n_mtime == vattr.va_mtime.ts_sec) { 1484 nfsstats.direofcache_hits++; 1485 return (0); 1486 } 1487 } 1488 1489 /* 1490 * Call nfs_bioread() to do the real work. 1491 */ 1492 tresid = uio->uio_resid; 1493 error = nfs_bioread(vp, uio, 0, ap->a_cred); 1494 1495 if (!error && uio->uio_resid == tresid) 1496 nfsstats.direofcache_misses++; 1497 return (error); 1498 } 1499 1500 /* 1501 * Readdir rpc call. 1502 * Called from below the buffer cache by nfs_doio(). 1503 */ 1504 int 1505 nfs_readdirrpc(vp, uiop, cred) 1506 register struct vnode *vp; 1507 struct uio *uiop; 1508 struct ucred *cred; 1509 { 1510 register long len; 1511 register struct dirent *dp; 1512 register u_long *tl; 1513 register caddr_t cp; 1514 register long t1; 1515 long tlen, lastlen; 1516 caddr_t bpos, dpos, cp2; 1517 int error = 0; 1518 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1519 struct mbuf *md2; 1520 caddr_t dpos2; 1521 int siz; 1522 int more_dirs = 1; 1523 u_long off, savoff; 1524 struct dirent *savdp; 1525 struct nfsmount *nmp; 1526 struct nfsnode *np = VTONFS(vp); 1527 long tresid; 1528 1529 nmp = VFSTONFS(vp->v_mount); 1530 tresid = uiop->uio_resid; 1531 /* 1532 * Loop around doing readdir rpc's of size uio_resid or nm_rsize, 1533 * whichever is smaller, truncated to a multiple of NFS_DIRBLKSIZ. 1534 * The stopping criteria is EOF or buffer full. 1535 */ 1536 while (more_dirs && uiop->uio_resid >= NFS_DIRBLKSIZ) { 1537 nfsstats.rpccnt[NFSPROC_READDIR]++; 1538 nfsm_reqhead(vp, NFSPROC_READDIR, 1539 NFSX_FH + 2 * NFSX_UNSIGNED); 1540 nfsm_fhtom(vp); 1541 nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED); 1542 off = (u_long)uiop->uio_offset; 1543 *tl++ = txdr_unsigned(off); 1544 *tl = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ? 1545 nmp->nm_rsize : uiop->uio_resid) & ~(NFS_DIRBLKSIZ-1)); 1546 nfsm_request(vp, NFSPROC_READDIR, uiop->uio_procp, cred); 1547 siz = 0; 1548 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1549 more_dirs = fxdr_unsigned(int, *tl); 1550 1551 /* Save the position so that we can do nfsm_mtouio() later */ 1552 dpos2 = dpos; 1553 md2 = md; 1554 1555 /* loop thru the dir entries, doctoring them to 4bsd form */ 1556 #ifdef lint 1557 dp = (struct dirent *)0; 1558 #endif /* lint */ 1559 while (more_dirs && siz < uiop->uio_resid) { 1560 savoff = off; /* Hold onto offset and dp */ 1561 savdp = dp; 1562 nfsm_dissecton(tl, u_long *, 2 * NFSX_UNSIGNED); 1563 dp = (struct dirent *)tl; 1564 dp->d_fileno = fxdr_unsigned(u_long, *tl++); 1565 len = fxdr_unsigned(int, *tl); 1566 if (len <= 0 || len > NFS_MAXNAMLEN) { 1567 error = EBADRPC; 1568 m_freem(mrep); 1569 goto nfsmout; 1570 } 1571 dp->d_namlen = (u_char)len; 1572 dp->d_type = DT_UNKNOWN; 1573 nfsm_adv(len); /* Point past name */ 1574 tlen = nfsm_rndup(len); 1575 /* 1576 * This should not be necessary, but some servers have 1577 * broken XDR such that these bytes are not null filled. 1578 */ 1579 if (tlen != len) { 1580 *dpos = '\0'; /* Null-terminate */ 1581 nfsm_adv(tlen - len); 1582 len = tlen; 1583 } 1584 nfsm_dissecton(tl, u_long *, 2 * NFSX_UNSIGNED); 1585 off = fxdr_unsigned(u_long, *tl); 1586 *tl++ = 0; /* Ensures null termination of name */ 1587 more_dirs = fxdr_unsigned(int, *tl); 1588 dp->d_reclen = len + 4 * NFSX_UNSIGNED; 1589 siz += dp->d_reclen; 1590 } 1591 /* 1592 * If at end of rpc data, get the eof boolean 1593 */ 1594 if (!more_dirs) { 1595 nfsm_dissecton(tl, u_long *, NFSX_UNSIGNED); 1596 more_dirs = (fxdr_unsigned(int, *tl) == 0); 1597 1598 /* 1599 * If at EOF, cache directory offset 1600 */ 1601 if (!more_dirs) 1602 np->n_direofoffset = off; 1603 } 1604 /* 1605 * If there is too much to fit in the data buffer, use savoff and 1606 * savdp to trim off the last record. 1607 * --> we are not at eof 1608 */ 1609 if (siz > uiop->uio_resid) { 1610 off = savoff; 1611 siz -= dp->d_reclen; 1612 dp = savdp; 1613 more_dirs = 0; /* Paranoia */ 1614 } 1615 if (siz > 0) { 1616 lastlen = dp->d_reclen; 1617 md = md2; 1618 dpos = dpos2; 1619 nfsm_mtouio(uiop, siz); 1620 uiop->uio_offset = (off_t)off; 1621 } else 1622 more_dirs = 0; /* Ugh, never happens, but in case.. */ 1623 m_freem(mrep); 1624 } 1625 /* 1626 * Fill last record, iff any, out to a multiple of NFS_DIRBLKSIZ 1627 * by increasing d_reclen for the last record. 1628 */ 1629 if (uiop->uio_resid < tresid) { 1630 len = uiop->uio_resid & (NFS_DIRBLKSIZ - 1); 1631 if (len > 0) { 1632 dp = (struct dirent *) 1633 (uiop->uio_iov->iov_base - lastlen); 1634 dp->d_reclen += len; 1635 uiop->uio_iov->iov_base += len; 1636 uiop->uio_iov->iov_len -= len; 1637 uiop->uio_resid -= len; 1638 } 1639 } 1640 nfsmout: 1641 return (error); 1642 } 1643 1644 /* 1645 * Nqnfs readdir_and_lookup RPC. Used in place of nfs_readdirrpc(). 1646 */ 1647 int 1648 nfs_readdirlookrpc(vp, uiop, cred) 1649 struct vnode *vp; 1650 register struct uio *uiop; 1651 struct ucred *cred; 1652 { 1653 register int len; 1654 register struct dirent *dp; 1655 register u_long *tl; 1656 register caddr_t cp; 1657 register long t1; 1658 caddr_t bpos, dpos, cp2; 1659 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1660 struct nameidata nami, *ndp = &nami; 1661 struct componentname *cnp = &ndp->ni_cnd; 1662 u_long off, endoff, fileno; 1663 time_t reqtime, ltime; 1664 struct nfsmount *nmp; 1665 struct nfsnode *np, *tp; 1666 struct vnode *newvp; 1667 nfsv2fh_t *fhp; 1668 u_quad_t frev; 1669 int error = 0, tlen, more_dirs = 1, tresid, doit, bigenough, i; 1670 int cachable; 1671 1672 if (uiop->uio_iovcnt != 1) 1673 panic("nfs rdirlook"); 1674 nmp = VFSTONFS(vp->v_mount); 1675 tresid = uiop->uio_resid; 1676 ndp->ni_dvp = vp; 1677 newvp = NULLVP; 1678 /* 1679 * Loop around doing readdir rpc's of size uio_resid or nm_rsize, 1680 * whichever is smaller, truncated to a multiple of NFS_DIRBLKSIZ. 1681 * The stopping criteria is EOF or buffer full. 1682 */ 1683 while (more_dirs && uiop->uio_resid >= NFS_DIRBLKSIZ) { 1684 nfsstats.rpccnt[NQNFSPROC_READDIRLOOK]++; 1685 nfsm_reqhead(vp, NQNFSPROC_READDIRLOOK, 1686 NFSX_FH + 3 * NFSX_UNSIGNED); 1687 nfsm_fhtom(vp); 1688 nfsm_build(tl, u_long *, 3 * NFSX_UNSIGNED); 1689 off = (u_long)uiop->uio_offset; 1690 *tl++ = txdr_unsigned(off); 1691 *tl++ = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ? 1692 nmp->nm_rsize : uiop->uio_resid) & ~(NFS_DIRBLKSIZ-1)); 1693 if (nmp->nm_flag & NFSMNT_NQLOOKLEASE) 1694 *tl = txdr_unsigned(nmp->nm_leaseterm); 1695 else 1696 *tl = 0; 1697 reqtime = time.tv_sec; 1698 nfsm_request(vp, NQNFSPROC_READDIRLOOK, uiop->uio_procp, cred); 1699 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1700 more_dirs = fxdr_unsigned(int, *tl); 1701 1702 /* loop thru the dir entries, doctoring them to 4bsd form */ 1703 bigenough = 1; 1704 while (more_dirs && bigenough) { 1705 doit = 1; 1706 nfsm_dissect(tl, u_long *, 4 * NFSX_UNSIGNED); 1707 if (nmp->nm_flag & NFSMNT_NQLOOKLEASE) { 1708 cachable = fxdr_unsigned(int, *tl++); 1709 ltime = reqtime + fxdr_unsigned(int, *tl++); 1710 fxdr_hyper(tl, &frev); 1711 } 1712 nfsm_dissect(fhp, nfsv2fh_t *, NFSX_FH); 1713 if (!bcmp(VTONFS(vp)->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 1714 VREF(vp); 1715 newvp = vp; 1716 np = VTONFS(vp); 1717 } else { 1718 if (error = nfs_nget(vp->v_mount, fhp, &np)) 1719 doit = 0; 1720 newvp = NFSTOV(np); 1721 } 1722 if (error = nfs_loadattrcache(&newvp, &md, &dpos, 1723 (struct vattr *)0)) 1724 doit = 0; 1725 nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); 1726 fileno = fxdr_unsigned(u_long, *tl++); 1727 len = fxdr_unsigned(int, *tl); 1728 if (len <= 0 || len > NFS_MAXNAMLEN) { 1729 error = EBADRPC; 1730 m_freem(mrep); 1731 goto nfsmout; 1732 } 1733 tlen = (len + 4) & ~0x3; 1734 if ((tlen + DIRHDSIZ) > uiop->uio_resid) 1735 bigenough = 0; 1736 if (bigenough && doit) { 1737 dp = (struct dirent *)uiop->uio_iov->iov_base; 1738 dp->d_fileno = fileno; 1739 dp->d_namlen = len; 1740 dp->d_reclen = tlen + DIRHDSIZ; 1741 dp->d_type = 1742 IFTODT(VTTOIF(np->n_vattr.va_type)); 1743 uiop->uio_resid -= DIRHDSIZ; 1744 uiop->uio_iov->iov_base += DIRHDSIZ; 1745 uiop->uio_iov->iov_len -= DIRHDSIZ; 1746 cnp->cn_nameptr = uiop->uio_iov->iov_base; 1747 cnp->cn_namelen = len; 1748 ndp->ni_vp = newvp; 1749 nfsm_mtouio(uiop, len); 1750 cp = uiop->uio_iov->iov_base; 1751 tlen -= len; 1752 for (i = 0; i < tlen; i++) 1753 *cp++ = '\0'; 1754 uiop->uio_iov->iov_base += tlen; 1755 uiop->uio_iov->iov_len -= tlen; 1756 uiop->uio_resid -= tlen; 1757 cnp->cn_hash = 0; 1758 for (cp = cnp->cn_nameptr, i = 1; i <= len; i++, cp++) 1759 cnp->cn_hash += (unsigned char)*cp * i; 1760 if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) && 1761 ltime > time.tv_sec) 1762 nqnfs_clientlease(nmp, np, NQL_READ, 1763 cachable, ltime, frev); 1764 cache_enter(ndp->ni_dvp, ndp->ni_vp, cnp); 1765 } else { 1766 nfsm_adv(nfsm_rndup(len)); 1767 } 1768 if (newvp != NULLVP) { 1769 vrele(newvp); 1770 newvp = NULLVP; 1771 } 1772 nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); 1773 if (bigenough) 1774 endoff = off = fxdr_unsigned(u_long, *tl++); 1775 else 1776 endoff = fxdr_unsigned(u_long, *tl++); 1777 more_dirs = fxdr_unsigned(int, *tl); 1778 } 1779 /* 1780 * If at end of rpc data, get the eof boolean 1781 */ 1782 if (!more_dirs) { 1783 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1784 more_dirs = (fxdr_unsigned(int, *tl) == 0); 1785 1786 /* 1787 * If at EOF, cache directory offset 1788 */ 1789 if (!more_dirs) 1790 VTONFS(vp)->n_direofoffset = endoff; 1791 } 1792 if (uiop->uio_resid < tresid) 1793 uiop->uio_offset = (off_t)off; 1794 else 1795 more_dirs = 0; 1796 m_freem(mrep); 1797 } 1798 /* 1799 * Fill last record, iff any, out to a multiple of NFS_DIRBLKSIZ 1800 * by increasing d_reclen for the last record. 1801 */ 1802 if (uiop->uio_resid < tresid) { 1803 len = uiop->uio_resid & (NFS_DIRBLKSIZ - 1); 1804 if (len > 0) { 1805 dp->d_reclen += len; 1806 uiop->uio_iov->iov_base += len; 1807 uiop->uio_iov->iov_len -= len; 1808 uiop->uio_resid -= len; 1809 } 1810 } 1811 nfsmout: 1812 if (newvp != NULLVP) 1813 vrele(newvp); 1814 return (error); 1815 } 1816 static char hextoasc[] = "0123456789abcdef"; 1817 1818 /* 1819 * Silly rename. To make the NFS filesystem that is stateless look a little 1820 * more like the "ufs" a remove of an active vnode is translated to a rename 1821 * to a funny looking filename that is removed by nfs_inactive on the 1822 * nfsnode. There is the potential for another process on a different client 1823 * to create the same funny name between the nfs_lookitup() fails and the 1824 * nfs_rename() completes, but... 1825 */ 1826 int 1827 nfs_sillyrename(dvp, vp, cnp) 1828 struct vnode *dvp, *vp; 1829 struct componentname *cnp; 1830 { 1831 register struct nfsnode *np; 1832 register struct sillyrename *sp; 1833 int error; 1834 short pid; 1835 1836 cache_purge(dvp); 1837 np = VTONFS(vp); 1838 #ifdef SILLYSEPARATE 1839 MALLOC(sp, struct sillyrename *, sizeof (struct sillyrename), 1840 M_NFSREQ, M_WAITOK); 1841 #else 1842 sp = &np->n_silly; 1843 #endif 1844 sp->s_cred = crdup(cnp->cn_cred); 1845 sp->s_dvp = dvp; 1846 VREF(dvp); 1847 1848 /* Fudge together a funny name */ 1849 pid = cnp->cn_proc->p_pid; 1850 bcopy(".nfsAxxxx4.4", sp->s_name, 13); 1851 sp->s_namlen = 12; 1852 sp->s_name[8] = hextoasc[pid & 0xf]; 1853 sp->s_name[7] = hextoasc[(pid >> 4) & 0xf]; 1854 sp->s_name[6] = hextoasc[(pid >> 8) & 0xf]; 1855 sp->s_name[5] = hextoasc[(pid >> 12) & 0xf]; 1856 1857 /* Try lookitups until we get one that isn't there */ 1858 while (nfs_lookitup(sp, (nfsv2fh_t *)0, cnp->cn_proc) == 0) { 1859 sp->s_name[4]++; 1860 if (sp->s_name[4] > 'z') { 1861 error = EINVAL; 1862 goto bad; 1863 } 1864 } 1865 if (error = nfs_renameit(dvp, cnp, sp)) 1866 goto bad; 1867 nfs_lookitup(sp, &np->n_fh, cnp->cn_proc); 1868 np->n_sillyrename = sp; 1869 return (0); 1870 bad: 1871 vrele(sp->s_dvp); 1872 crfree(sp->s_cred); 1873 #ifdef SILLYSEPARATE 1874 free((caddr_t)sp, M_NFSREQ); 1875 #endif 1876 return (error); 1877 } 1878 1879 /* 1880 * Look up a file name for silly rename stuff. 1881 * Just like nfs_lookup() except that it doesn't load returned values 1882 * into the nfsnode table. 1883 * If fhp != NULL it copies the returned file handle out 1884 */ 1885 int 1886 nfs_lookitup(sp, fhp, procp) 1887 register struct sillyrename *sp; 1888 nfsv2fh_t *fhp; 1889 struct proc *procp; 1890 { 1891 register struct vnode *vp = sp->s_dvp; 1892 register u_long *tl; 1893 register caddr_t cp; 1894 register long t1, t2; 1895 caddr_t bpos, dpos, cp2; 1896 u_long xid; 1897 int error = 0, isnq; 1898 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1899 long len; 1900 1901 isnq = (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS); 1902 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 1903 len = sp->s_namlen; 1904 nfsm_reqhead(vp, NFSPROC_LOOKUP, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 1905 if (isnq) { 1906 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 1907 *tl = 0; 1908 } 1909 nfsm_fhtom(vp); 1910 nfsm_strtom(sp->s_name, len, NFS_MAXNAMLEN); 1911 nfsm_request(vp, NFSPROC_LOOKUP, procp, sp->s_cred); 1912 if (fhp != NULL) { 1913 if (isnq) 1914 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1915 nfsm_dissect(cp, caddr_t, NFSX_FH); 1916 bcopy(cp, (caddr_t)fhp, NFSX_FH); 1917 } 1918 nfsm_reqdone; 1919 return (error); 1920 } 1921 1922 /* 1923 * Kludge City.. 1924 * - make nfs_bmap() essentially a no-op that does no translation 1925 * - do nfs_strategy() by faking physical I/O with nfs_readrpc/nfs_writerpc 1926 * after mapping the physical addresses into Kernel Virtual space in the 1927 * nfsiobuf area. 1928 * (Maybe I could use the process's page mapping, but I was concerned that 1929 * Kernel Write might not be enabled and also figured copyout() would do 1930 * a lot more work than bcopy() and also it currently happens in the 1931 * context of the swapper process (2). 1932 */ 1933 int 1934 nfs_bmap(ap) 1935 struct vop_bmap_args /* { 1936 struct vnode *a_vp; 1937 daddr_t a_bn; 1938 struct vnode **a_vpp; 1939 daddr_t *a_bnp; 1940 } */ *ap; 1941 { 1942 register struct vnode *vp = ap->a_vp; 1943 1944 if (ap->a_vpp != NULL) 1945 *ap->a_vpp = vp; 1946 if (ap->a_bnp != NULL) 1947 *ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize); 1948 return (0); 1949 } 1950 1951 /* 1952 * Strategy routine for phys. i/o 1953 * If the biod's are running, queue a request 1954 * otherwise just call nfs_doio() to get it done 1955 */ 1956 int 1957 nfs_strategy(ap) 1958 struct vop_strategy_args /* { 1959 struct buf *a_bp; 1960 } */ *ap; 1961 { 1962 register struct buf *bp = ap->a_bp; 1963 register struct buf *dp; 1964 register int i; 1965 int error = 0; 1966 int fnd = 0; 1967 1968 /* 1969 * Set b_proc. It seems a bit silly to do it here, but since bread() 1970 * doesn't set it, I will. 1971 * Set b_proc == NULL for asynchronous ops, since these may still 1972 * be hanging about after the process terminates. 1973 */ 1974 if ((bp->b_flags & B_PHYS) == 0) { 1975 if (bp->b_flags & B_ASYNC) 1976 bp->b_proc = (struct proc *)0; 1977 else 1978 bp->b_proc = curproc; 1979 } 1980 /* 1981 * If the op is asynchronous and an i/o daemon is waiting 1982 * queue the request, wake it up and wait for completion 1983 * otherwise just do it ourselves. 1984 */ 1985 if ((bp->b_flags & B_ASYNC) == 0 || nfs_numasync == 0) 1986 return (nfs_doio(bp)); 1987 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) { 1988 if (nfs_iodwant[i]) { 1989 dp = &nfs_bqueue; 1990 if (dp->b_actf == NULL) { 1991 dp->b_actl = bp; 1992 bp->b_actf = dp; 1993 } else { 1994 dp->b_actf->b_actl = bp; 1995 bp->b_actf = dp->b_actf; 1996 } 1997 dp->b_actf = bp; 1998 bp->b_actl = dp; 1999 fnd++; 2000 wakeup((caddr_t)&nfs_iodwant[i]); 2001 break; 2002 } 2003 } 2004 if (!fnd) 2005 error = nfs_doio(bp); 2006 return (error); 2007 } 2008 2009 /* 2010 * Fun and games with i/o 2011 * Essentially play ubasetup() and disk interrupt service routine by 2012 * mapping the data buffer into kernel virtual space and doing the 2013 * nfs read or write rpc's from it. 2014 * If the nfsiod's are not running, this is just called from nfs_strategy(), 2015 * otherwise it is called by the nfsiods to do what would normally be 2016 * partially disk interrupt driven. 2017 */ 2018 int 2019 nfs_doio(bp) 2020 register struct buf *bp; 2021 { 2022 register struct uio *uiop; 2023 register struct vnode *vp; 2024 struct nfsnode *np; 2025 struct ucred *cr; 2026 int error; 2027 struct uio uio; 2028 struct iovec io; 2029 2030 vp = bp->b_vp; 2031 np = VTONFS(vp); 2032 uiop = &uio; 2033 uiop->uio_iov = &io; 2034 uiop->uio_iovcnt = 1; 2035 uiop->uio_segflg = UIO_SYSSPACE; 2036 uiop->uio_procp = bp->b_proc; 2037 2038 /* 2039 * For phys i/o, map the b_addr into kernel virtual space using 2040 * the Nfsiomap pte's 2041 * Also, add a temporary b_rcred for reading using the process's uid 2042 * and a guess at a group 2043 */ 2044 if (bp->b_flags & B_PHYS) { 2045 if (bp->b_flags & B_DIRTY) 2046 uiop->uio_procp = pageproc; 2047 cr = crcopy(uiop->uio_procp->p_ucred); 2048 /* mapping was already done by vmapbuf */ 2049 io.iov_base = bp->b_un.b_addr; 2050 2051 /* 2052 * And do the i/o rpc 2053 */ 2054 io.iov_len = uiop->uio_resid = bp->b_bcount; 2055 uiop->uio_offset = bp->b_blkno * DEV_BSIZE; 2056 if (bp->b_flags & B_READ) { 2057 uiop->uio_rw = UIO_READ; 2058 nfsstats.read_physios++; 2059 bp->b_error = error = nfs_readrpc(vp, uiop, cr); 2060 (void) vnode_pager_uncache(vp); 2061 } else { 2062 uiop->uio_rw = UIO_WRITE; 2063 nfsstats.write_physios++; 2064 bp->b_error = error = nfs_writerpc(vp, uiop, cr, 0); 2065 } 2066 2067 /* 2068 * Finally, release pte's used by physical i/o 2069 */ 2070 crfree(cr); 2071 } else { 2072 if (bp->b_flags & B_READ) { 2073 io.iov_len = uiop->uio_resid = bp->b_bcount; 2074 io.iov_base = bp->b_un.b_addr; 2075 uiop->uio_rw = UIO_READ; 2076 switch (vp->v_type) { 2077 case VREG: 2078 uiop->uio_offset = bp->b_blkno * DEV_BSIZE; 2079 nfsstats.read_bios++; 2080 error = nfs_readrpc(vp, uiop, bp->b_rcred); 2081 break; 2082 case VLNK: 2083 uiop->uio_offset = 0; 2084 nfsstats.readlink_bios++; 2085 error = nfs_readlinkrpc(vp, uiop, bp->b_rcred); 2086 break; 2087 case VDIR: 2088 uiop->uio_offset = bp->b_lblkno; 2089 nfsstats.readdir_bios++; 2090 if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) 2091 error = nfs_readdirlookrpc(vp, uiop, bp->b_rcred); 2092 else 2093 error = nfs_readdirrpc(vp, uiop, bp->b_rcred); 2094 /* 2095 * Save offset cookie in b_blkno. 2096 */ 2097 bp->b_blkno = uiop->uio_offset; 2098 break; 2099 }; 2100 bp->b_error = error; 2101 } else { 2102 io.iov_len = uiop->uio_resid = bp->b_dirtyend 2103 - bp->b_dirtyoff; 2104 uiop->uio_offset = (bp->b_blkno * DEV_BSIZE) 2105 + bp->b_dirtyoff; 2106 io.iov_base = bp->b_un.b_addr + bp->b_dirtyoff; 2107 uiop->uio_rw = UIO_WRITE; 2108 nfsstats.write_bios++; 2109 bp->b_error = error = nfs_writerpc(vp, uiop, 2110 bp->b_wcred, 0); 2111 if (error) { 2112 np->n_error = error; 2113 np->n_flag |= NWRITEERR; 2114 } 2115 bp->b_dirtyoff = bp->b_dirtyend = 0; 2116 } 2117 } 2118 if (error) 2119 bp->b_flags |= B_ERROR; 2120 bp->b_resid = uiop->uio_resid; 2121 biodone(bp); 2122 return (error); 2123 } 2124 2125 /* 2126 * Mmap a file 2127 * 2128 * NB Currently unsupported. 2129 */ 2130 /* ARGSUSED */ 2131 int 2132 nfs_mmap(ap) 2133 struct vop_mmap_args /* { 2134 struct vnode *a_vp; 2135 int a_fflags; 2136 struct ucred *a_cred; 2137 struct proc *a_p; 2138 } */ *ap; 2139 { 2140 2141 return (EINVAL); 2142 } 2143 2144 /* 2145 * Flush all the blocks associated with a vnode. 2146 * Walk through the buffer pool and push any dirty pages 2147 * associated with the vnode. 2148 */ 2149 /* ARGSUSED */ 2150 int 2151 nfs_fsync(ap) 2152 struct vop_fsync_args /* { 2153 struct vnodeop_desc *a_desc; 2154 struct vnode * a_vp; 2155 struct ucred * a_cred; 2156 int a_waitfor; 2157 struct proc * a_p; 2158 } */ *ap; 2159 { 2160 register struct vnode *vp = ap->a_vp; 2161 register struct nfsnode *np = VTONFS(vp); 2162 register struct buf *bp; 2163 struct buf *nbp; 2164 int s, error = 0; 2165 2166 loop: 2167 s = splbio(); 2168 for (bp = vp->v_dirtyblkhd; bp; bp = nbp) { 2169 nbp = bp->b_blockf; 2170 if ((bp->b_flags & B_BUSY)) 2171 continue; 2172 if ((bp->b_flags & B_DELWRI) == 0) 2173 panic("nfs_fsync: not dirty"); 2174 bremfree(bp); 2175 bp->b_flags |= B_BUSY; 2176 splx(s); 2177 error = bawrite(bp); 2178 goto loop; 2179 } 2180 if (ap->a_waitfor == MNT_WAIT) { 2181 while (vp->v_numoutput) { 2182 vp->v_flag |= VBWAIT; 2183 sleep((caddr_t)&vp->v_numoutput, PRIBIO + 1); 2184 } 2185 #ifdef DIAGNOSTIC 2186 if (vp->v_dirtyblkhd) { 2187 vprint("nfs_fsync: dirty", vp); 2188 goto loop; 2189 } 2190 #endif 2191 } 2192 splx(s); 2193 np->n_flag &= ~NMODIFIED; 2194 if (np->n_flag & NWRITEERR) { 2195 error = np->n_error; 2196 np->n_flag &= ~NWRITEERR; 2197 } 2198 return (error); 2199 } 2200 2201 /* 2202 * NFS advisory byte-level locks. 2203 * Currently unsupported. 2204 */ 2205 int 2206 nfs_advlock(ap) 2207 struct vop_advlock_args /* { 2208 struct vnode *a_vp; 2209 caddr_t a_id; 2210 int a_op; 2211 struct flock *a_fl; 2212 int a_flags; 2213 } */ *ap; 2214 { 2215 2216 return (EOPNOTSUPP); 2217 } 2218 2219 /* 2220 * Print out the contents of an nfsnode. 2221 */ 2222 int 2223 nfs_print(ap) 2224 struct vop_print_args /* { 2225 struct vnode *a_vp; 2226 } */ *ap; 2227 { 2228 register struct vnode *vp = ap->a_vp; 2229 register struct nfsnode *np = VTONFS(vp); 2230 2231 printf("tag VT_NFS, fileid %d fsid 0x%x", 2232 np->n_vattr.va_fileid, np->n_vattr.va_fsid); 2233 #ifdef FIFO 2234 if (vp->v_type == VFIFO) 2235 fifo_printinfo(vp); 2236 #endif /* FIFO */ 2237 printf("\n"); 2238 } 2239 2240 /* 2241 * NFS directory offset lookup. 2242 * Currently unsupported. 2243 */ 2244 int 2245 nfs_blkatoff(ap) 2246 struct vop_blkatoff_args /* { 2247 struct vnode *a_vp; 2248 off_t a_offset; 2249 char **a_res; 2250 struct buf **a_bpp; 2251 } */ *ap; 2252 { 2253 2254 return (EOPNOTSUPP); 2255 } 2256 2257 /* 2258 * NFS flat namespace allocation. 2259 * Currently unsupported. 2260 */ 2261 int 2262 nfs_valloc(ap) 2263 struct vop_valloc_args /* { 2264 struct vnode *a_pvp; 2265 int a_mode; 2266 struct ucred *a_cred; 2267 struct vnode **a_vpp; 2268 } */ *ap; 2269 { 2270 2271 return (EOPNOTSUPP); 2272 } 2273 2274 /* 2275 * NFS flat namespace free. 2276 * Currently unsupported. 2277 */ 2278 int 2279 nfs_vfree(ap) 2280 struct vop_vfree_args /* { 2281 struct vnode *a_pvp; 2282 ino_t a_ino; 2283 int a_mode; 2284 } */ *ap; 2285 { 2286 2287 return (EOPNOTSUPP); 2288 } 2289 2290 /* 2291 * NFS file truncation. 2292 */ 2293 int 2294 nfs_truncate(ap) 2295 struct vop_truncate_args /* { 2296 struct vnode *a_vp; 2297 off_t a_length; 2298 int a_flags; 2299 struct ucred *a_cred; 2300 struct proc *a_p; 2301 } */ *ap; 2302 { 2303 2304 /* Use nfs_setattr */ 2305 printf("nfs_truncate: need to implement!!"); 2306 return (EOPNOTSUPP); 2307 } 2308 2309 /* 2310 * NFS update. 2311 */ 2312 int 2313 nfs_update(ap) 2314 struct vop_update_args /* { 2315 struct vnode *a_vp; 2316 struct timeval *a_ta; 2317 struct timeval *a_tm; 2318 int a_waitfor; 2319 } */ *ap; 2320 { 2321 2322 /* Use nfs_setattr */ 2323 printf("nfs_update: need to implement!!"); 2324 return (EOPNOTSUPP); 2325 } 2326 2327 /* 2328 * nfs special file access vnode op. 2329 * Essentially just get vattr and then imitate iaccess() since the device is 2330 * local to the client. 2331 */ 2332 int 2333 nfsspec_access(ap) 2334 struct vop_access_args /* { 2335 struct vnode *a_vp; 2336 int a_mode; 2337 struct ucred *a_cred; 2338 struct proc *a_p; 2339 } */ *ap; 2340 { 2341 register struct vattr *vap; 2342 register gid_t *gp; 2343 register struct ucred *cred = ap->a_cred; 2344 mode_t mode = ap->a_mode; 2345 struct vattr vattr; 2346 register int i; 2347 int error; 2348 2349 /* 2350 * If you're the super-user, 2351 * you always get access. 2352 */ 2353 if (cred->cr_uid == 0) 2354 return (0); 2355 vap = &vattr; 2356 if (error = VOP_GETATTR(ap->a_vp, vap, cred, ap->a_p)) 2357 return (error); 2358 /* 2359 * Access check is based on only one of owner, group, public. 2360 * If not owner, then check group. If not a member of the 2361 * group, then check public access. 2362 */ 2363 if (cred->cr_uid != vap->va_uid) { 2364 mode >>= 3; 2365 gp = cred->cr_groups; 2366 for (i = 0; i < cred->cr_ngroups; i++, gp++) 2367 if (vap->va_gid == *gp) 2368 goto found; 2369 mode >>= 3; 2370 found: 2371 ; 2372 } 2373 if ((vap->va_mode & mode) != 0) 2374 return (0); 2375 return (EACCES); 2376 } 2377 2378 /* 2379 * Read wrapper for special devices. 2380 */ 2381 int 2382 nfsspec_read(ap) 2383 struct vop_read_args /* { 2384 struct vnode *a_vp; 2385 struct uio *a_uio; 2386 int a_ioflag; 2387 struct ucred *a_cred; 2388 } */ *ap; 2389 { 2390 register struct nfsnode *np = VTONFS(ap->a_vp); 2391 2392 /* 2393 * Set access flag. 2394 */ 2395 np->n_flag |= NACC; 2396 np->n_atim = time; 2397 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_read), ap)); 2398 } 2399 2400 /* 2401 * Write wrapper for special devices. 2402 */ 2403 int 2404 nfsspec_write(ap) 2405 struct vop_write_args /* { 2406 struct vnode *a_vp; 2407 struct uio *a_uio; 2408 int a_ioflag; 2409 struct ucred *a_cred; 2410 } */ *ap; 2411 { 2412 register struct nfsnode *np = VTONFS(ap->a_vp); 2413 2414 /* 2415 * Set update flag. 2416 */ 2417 np->n_flag |= NUPD; 2418 np->n_mtim = time; 2419 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_write), ap)); 2420 } 2421 2422 /* 2423 * Close wrapper for special devices. 2424 * 2425 * Update the times on the nfsnode then do device close. 2426 */ 2427 int 2428 nfsspec_close(ap) 2429 struct vop_close_args /* { 2430 struct vnode *a_vp; 2431 int a_fflag; 2432 struct ucred *a_cred; 2433 struct proc *a_p; 2434 } */ *ap; 2435 { 2436 register struct vnode *vp = ap->a_vp; 2437 register struct nfsnode *np = VTONFS(vp); 2438 struct vattr vattr; 2439 2440 if (np->n_flag & (NACC | NUPD)) { 2441 np->n_flag |= NCHG; 2442 if (vp->v_usecount == 1 && 2443 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 2444 VATTR_NULL(&vattr); 2445 if (np->n_flag & NACC) { 2446 vattr.va_atime.ts_sec = np->n_atim.tv_sec; 2447 vattr.va_atime.ts_nsec = 2448 np->n_atim.tv_usec * 1000; 2449 } 2450 if (np->n_flag & NUPD) { 2451 vattr.va_mtime.ts_sec = np->n_mtim.tv_sec; 2452 vattr.va_mtime.ts_nsec = 2453 np->n_mtim.tv_usec * 1000; 2454 } 2455 (void)VOP_SETATTR(vp, &vattr, ap->a_cred, ap->a_p); 2456 } 2457 } 2458 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_close), ap)); 2459 } 2460 2461 #ifdef FIFO 2462 /* 2463 * Read wrapper for fifos. 2464 */ 2465 int 2466 nfsfifo_read(ap) 2467 struct vop_read_args /* { 2468 struct vnode *a_vp; 2469 struct uio *a_uio; 2470 int a_ioflag; 2471 struct ucred *a_cred; 2472 } */ *ap; 2473 { 2474 extern int (**fifo_vnodeop_p)(); 2475 register struct nfsnode *np = VTONFS(ap->a_vp); 2476 2477 /* 2478 * Set access flag. 2479 */ 2480 np->n_flag |= NACC; 2481 np->n_atim = time; 2482 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), ap)); 2483 } 2484 2485 /* 2486 * Write wrapper for fifos. 2487 */ 2488 int 2489 nfsfifo_write(ap) 2490 struct vop_write_args /* { 2491 struct vnode *a_vp; 2492 struct uio *a_uio; 2493 int a_ioflag; 2494 struct ucred *a_cred; 2495 } */ *ap; 2496 { 2497 extern int (**fifo_vnodeop_p)(); 2498 register struct nfsnode *np = VTONFS(ap->a_vp); 2499 2500 /* 2501 * Set update flag. 2502 */ 2503 np->n_flag |= NUPD; 2504 np->n_mtim = time; 2505 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), ap)); 2506 } 2507 2508 /* 2509 * Close wrapper for fifos. 2510 * 2511 * Update the times on the nfsnode then do fifo close. 2512 */ 2513 int 2514 nfsfifo_close(ap) 2515 struct vop_close_args /* { 2516 struct vnode *a_vp; 2517 int a_fflag; 2518 struct ucred *a_cred; 2519 struct proc *a_p; 2520 } */ *ap; 2521 { 2522 register struct vnode *vp = ap->a_vp; 2523 register struct nfsnode *np = VTONFS(vp); 2524 struct vattr vattr; 2525 extern int (**fifo_vnodeop_p)(); 2526 2527 if (np->n_flag & (NACC | NUPD)) { 2528 if (np->n_flag & NACC) 2529 np->n_atim = time; 2530 if (np->n_flag & NUPD) 2531 np->n_mtim = time; 2532 np->n_flag |= NCHG; 2533 if (vp->v_usecount == 1 && 2534 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 2535 VATTR_NULL(&vattr); 2536 if (np->n_flag & NACC) { 2537 vattr.va_atime.ts_sec = np->n_atim.tv_sec; 2538 vattr.va_atime.ts_nsec = 2539 np->n_atim.tv_usec * 1000; 2540 } 2541 if (np->n_flag & NUPD) { 2542 vattr.va_mtime.ts_sec = np->n_mtim.tv_sec; 2543 vattr.va_mtime.ts_nsec = 2544 np->n_mtim.tv_usec * 1000; 2545 } 2546 (void)VOP_SETATTR(vp, &vattr, ap->a_cred, ap->a_p); 2547 } 2548 } 2549 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_close), ap)); 2550 } 2551 #endif /* FIFO */ 2552