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 7.103 (Berkeley) 02/02/93 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 * For nqnfs, do an access rpc, otherwise you are stuck emulating 255 * ufs_access() locally using the vattr. This may not be correct, 256 * since the server may apply other access criteria such as 257 * client uid-->server uid mapping that we do not know about, but 258 * this is better than just returning anything that is lying about 259 * in the cache. 260 */ 261 if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) { 262 nfsstats.rpccnt[NQNFSPROC_ACCESS]++; 263 nfsm_reqhead(vp, NQNFSPROC_ACCESS, NFSX_FH + 3 * NFSX_UNSIGNED); 264 nfsm_fhtom(vp); 265 nfsm_build(tl, u_long *, 3 * NFSX_UNSIGNED); 266 if (ap->a_mode & VREAD) 267 *tl++ = nfs_true; 268 else 269 *tl++ = nfs_false; 270 if (ap->a_mode & VWRITE) 271 *tl++ = nfs_true; 272 else 273 *tl++ = nfs_false; 274 if (ap->a_mode & VEXEC) 275 *tl = nfs_true; 276 else 277 *tl = nfs_false; 278 nfsm_request(vp, NQNFSPROC_ACCESS, ap->a_p, ap->a_cred); 279 nfsm_reqdone; 280 return (error); 281 } else 282 return (nfsspec_access(ap)); 283 } 284 285 /* 286 * nfs open vnode op 287 * Check to see if the type is ok 288 * and that deletion is not in progress. 289 * For paged in text files, you will need to flush the page cache 290 * if consistency is lost. 291 */ 292 /* ARGSUSED */ 293 int 294 nfs_open(ap) 295 struct vop_open_args /* { 296 struct vnode *a_vp; 297 int a_mode; 298 struct ucred *a_cred; 299 struct proc *a_p; 300 } */ *ap; 301 { 302 register struct vnode *vp = ap->a_vp; 303 struct nfsnode *np = VTONFS(vp); 304 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 305 struct vattr vattr; 306 int error; 307 308 if (vp->v_type != VREG && vp->v_type != VDIR && vp->v_type != VLNK) 309 return (EACCES); 310 if (vp->v_flag & VTEXT) { 311 /* 312 * Get a valid lease. If cached data is stale, flush it. 313 */ 314 if (nmp->nm_flag & NFSMNT_NQNFS) { 315 if (NQNFS_CKINVALID(vp, np, NQL_READ)) { 316 do { 317 error = nqnfs_getlease(vp, NQL_READ, ap->a_cred, ap->a_p); 318 } while (error == NQNFS_EXPIRED); 319 if (error) 320 return (error); 321 if (np->n_lrev != np->n_brev) { 322 if ((error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, 323 ap->a_p, 1)) == EINTR) 324 return (error); 325 (void) vnode_pager_uncache(vp); 326 np->n_brev = np->n_lrev; 327 } 328 } 329 } else { 330 if (np->n_flag & NMODIFIED) { 331 if ((error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, 332 ap->a_p, 1)) == EINTR) 333 return (error); 334 (void) vnode_pager_uncache(vp); 335 np->n_attrstamp = 0; 336 np->n_direofoffset = 0; 337 if (error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p)) 338 return (error); 339 np->n_mtime = vattr.va_mtime.ts_sec; 340 } else { 341 if (error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p)) 342 return (error); 343 if (np->n_mtime != vattr.va_mtime.ts_sec) { 344 np->n_direofoffset = 0; 345 if ((error = nfs_vinvalbuf(vp, V_SAVE, 346 ap->a_cred, ap->a_p, 1)) == EINTR) 347 return (error); 348 (void) vnode_pager_uncache(vp); 349 np->n_mtime = vattr.va_mtime.ts_sec; 350 } 351 } 352 } 353 } else if ((nmp->nm_flag & NFSMNT_NQNFS) == 0) 354 np->n_attrstamp = 0; /* For Open/Close consistency */ 355 return (0); 356 } 357 358 /* 359 * nfs close vnode op 360 * For reg files, invalidate any buffer cache entries. 361 */ 362 /* ARGSUSED */ 363 int 364 nfs_close(ap) 365 struct vop_close_args /* { 366 struct vnodeop_desc *a_desc; 367 struct vnode *a_vp; 368 int a_fflag; 369 struct ucred *a_cred; 370 struct proc *a_p; 371 } */ *ap; 372 { 373 register struct vnode *vp = ap->a_vp; 374 register struct nfsnode *np = VTONFS(vp); 375 int error = 0; 376 377 if (vp->v_type == VREG) { 378 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) == 0 && 379 (np->n_flag & NMODIFIED)) { 380 error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p, 1); 381 np->n_attrstamp = 0; 382 } 383 if (np->n_flag & NWRITEERR) { 384 np->n_flag &= ~NWRITEERR; 385 error = np->n_error; 386 } 387 } 388 return (error); 389 } 390 391 /* 392 * nfs getattr call from vfs. 393 */ 394 int 395 nfs_getattr(ap) 396 struct vop_getattr_args /* { 397 struct vnode *a_vp; 398 struct vattr *a_vap; 399 struct ucred *a_cred; 400 struct proc *a_p; 401 } */ *ap; 402 { 403 register struct vnode *vp = ap->a_vp; 404 register struct nfsnode *np = VTONFS(vp); 405 register caddr_t cp; 406 caddr_t bpos, dpos; 407 int error = 0; 408 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 409 410 /* 411 * Update local times for special files. 412 */ 413 if (np->n_flag & (NACC | NUPD)) 414 np->n_flag |= NCHG; 415 /* 416 * First look in the cache. 417 */ 418 if (nfs_getattrcache(vp, ap->a_vap) == 0) 419 return (0); 420 nfsstats.rpccnt[NFSPROC_GETATTR]++; 421 nfsm_reqhead(vp, NFSPROC_GETATTR, NFSX_FH); 422 nfsm_fhtom(vp); 423 nfsm_request(vp, NFSPROC_GETATTR, ap->a_p, ap->a_cred); 424 nfsm_loadattr(vp, ap->a_vap); 425 nfsm_reqdone; 426 return (error); 427 } 428 429 /* 430 * nfs setattr call. 431 */ 432 int 433 nfs_setattr(ap) 434 struct vop_setattr_args /* { 435 struct vnodeop_desc *a_desc; 436 struct vnode *a_vp; 437 struct vattr *a_vap; 438 struct ucred *a_cred; 439 struct proc *a_p; 440 } */ *ap; 441 { 442 register struct nfsv2_sattr *sp; 443 register caddr_t cp; 444 register long t1; 445 caddr_t bpos, dpos, cp2; 446 u_long *tl; 447 int error = 0, isnq; 448 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 449 register struct vnode *vp = ap->a_vp; 450 register struct nfsnode *np = VTONFS(vp); 451 register struct vattr *vap = ap->a_vap; 452 u_quad_t frev; 453 454 if (vap->va_size != VNOVAL || vap->va_mtime.ts_sec != VNOVAL || 455 vap->va_atime.ts_sec != VNOVAL) { 456 if (vap->va_size != VNOVAL) { 457 if (np->n_flag & NMODIFIED) { 458 if (vap->va_size == 0) 459 error = nfs_vinvalbuf(vp, 0, ap->a_cred, 460 ap->a_p, 1); 461 else 462 error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, 463 ap->a_p, 1); 464 if (error) 465 return (error); 466 } 467 np->n_size = np->n_vattr.va_size = vap->va_size; 468 vnode_pager_setsize(vp, (u_long)np->n_size); 469 } else if ((np->n_flag & NMODIFIED) && 470 (error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, 471 ap->a_p, 1)) == EINTR) 472 return (error); 473 } 474 nfsstats.rpccnt[NFSPROC_SETATTR]++; 475 isnq = (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS); 476 nfsm_reqhead(vp, NFSPROC_SETATTR, NFSX_FH+NFSX_SATTR(isnq)); 477 nfsm_fhtom(vp); 478 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 479 if (vap->va_mode == (u_short)-1) 480 sp->sa_mode = VNOVAL; 481 else 482 sp->sa_mode = vtonfs_mode(vp->v_type, vap->va_mode); 483 if (vap->va_uid == (uid_t)-1) 484 sp->sa_uid = VNOVAL; 485 else 486 sp->sa_uid = txdr_unsigned(vap->va_uid); 487 if (vap->va_gid == (gid_t)-1) 488 sp->sa_gid = VNOVAL; 489 else 490 sp->sa_gid = txdr_unsigned(vap->va_gid); 491 if (isnq) { 492 txdr_hyper(&vap->va_size, &sp->sa_nqsize); 493 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 494 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 495 sp->sa_nqflags = txdr_unsigned(vap->va_flags); 496 sp->sa_nqrdev = VNOVAL; 497 } else { 498 sp->sa_nfssize = txdr_unsigned(vap->va_size); 499 sp->sa_nfsatime.nfs_sec = txdr_unsigned(vap->va_atime.ts_sec); 500 sp->sa_nfsatime.nfs_usec = txdr_unsigned(vap->va_flags); 501 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 502 } 503 nfsm_request(vp, NFSPROC_SETATTR, ap->a_p, ap->a_cred); 504 nfsm_loadattr(vp, (struct vattr *)0); 505 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) && 506 NQNFS_CKCACHABLE(vp, NQL_WRITE)) { 507 nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED); 508 fxdr_hyper(tl, &frev); 509 if (frev > np->n_brev) 510 np->n_brev = frev; 511 } 512 nfsm_reqdone; 513 return (error); 514 } 515 516 /* 517 * nfs lookup call, one step at a time... 518 * First look in cache 519 * If not found, unlock the directory nfsnode and do the rpc 520 */ 521 int 522 nfs_lookup(ap) 523 struct vop_lookup_args /* { 524 struct vnodeop_desc *a_desc; 525 struct vnode *a_dvp; 526 struct vnode **a_vpp; 527 struct componentname *a_cnp; 528 } */ *ap; 529 { 530 register struct componentname *cnp = ap->a_cnp; 531 register struct vnode *dvp = ap->a_dvp; 532 register struct vnode **vpp = ap->a_vpp; 533 register int flags = cnp->cn_flags; 534 register struct vnode *vdp; 535 register u_long *tl; 536 register caddr_t cp; 537 register long t1, t2; 538 struct nfsmount *nmp; 539 struct nfsnode *tp; 540 caddr_t bpos, dpos, cp2; 541 time_t reqtime; 542 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 543 struct vnode *newvp; 544 long len; 545 nfsv2fh_t *fhp; 546 struct nfsnode *np; 547 int lockparent, wantparent, error = 0; 548 int nqlflag, cachable; 549 u_quad_t frev; 550 551 *vpp = NULL; 552 if (dvp->v_type != VDIR) 553 return (ENOTDIR); 554 lockparent = flags & LOCKPARENT; 555 wantparent = flags & (LOCKPARENT|WANTPARENT); 556 nmp = VFSTONFS(dvp->v_mount); 557 np = VTONFS(dvp); 558 if ((error = cache_lookup(dvp, vpp, cnp)) && error != ENOENT) { 559 struct vattr vattr; 560 int vpid; 561 562 vdp = *vpp; 563 vpid = vdp->v_id; 564 /* 565 * See the comment starting `Step through' in ufs/ufs_lookup.c 566 * for an explanation of the locking protocol 567 */ 568 if (dvp == vdp) { 569 VREF(vdp); 570 error = 0; 571 } else 572 error = vget(vdp); 573 if (!error) { 574 if (vpid == vdp->v_id) { 575 if (nmp->nm_flag & NFSMNT_NQNFS) { 576 if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) == 0) { 577 nfsstats.lookupcache_hits++; 578 if (cnp->cn_nameiop != LOOKUP && 579 (flags & ISLASTCN)) 580 cnp->cn_flags |= SAVENAME; 581 return (0); 582 } else if (NQNFS_CKCACHABLE(dvp, NQL_READ)) { 583 if (np->n_lrev != np->n_brev || 584 (np->n_flag & NMODIFIED)) { 585 np->n_direofoffset = 0; 586 cache_purge(dvp); 587 error = nfs_vinvalbuf(dvp, 0, 588 cnp->cn_cred, cnp->cn_proc, 589 1); 590 if (error == EINTR) 591 return (error); 592 np->n_brev = np->n_lrev; 593 } else { 594 nfsstats.lookupcache_hits++; 595 if (cnp->cn_nameiop != LOOKUP && 596 (flags & ISLASTCN)) 597 cnp->cn_flags |= SAVENAME; 598 return (0); 599 } 600 } 601 } else if (!VOP_GETATTR(vdp, &vattr, cnp->cn_cred, cnp->cn_proc) && 602 vattr.va_ctime.ts_sec == VTONFS(vdp)->n_ctime) { 603 nfsstats.lookupcache_hits++; 604 if (cnp->cn_nameiop != LOOKUP && 605 (flags & ISLASTCN)) 606 cnp->cn_flags |= SAVENAME; 607 return (0); 608 } 609 cache_purge(vdp); 610 } 611 vrele(vdp); 612 } 613 *vpp = NULLVP; 614 } 615 error = 0; 616 nfsstats.lookupcache_misses++; 617 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 618 len = cnp->cn_namelen; 619 nfsm_reqhead(dvp, NFSPROC_LOOKUP, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 620 621 /* 622 * For nqnfs optionally piggyback a getlease request for the name 623 * being looked up. 624 */ 625 if (nmp->nm_flag & NFSMNT_NQNFS) { 626 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 627 if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) && 628 ((cnp->cn_flags & MAKEENTRY) && 629 (cnp->cn_nameiop != DELETE || !(flags & ISLASTCN)))) 630 *tl = txdr_unsigned(nmp->nm_leaseterm); 631 else 632 *tl = 0; 633 } 634 nfsm_fhtom(dvp); 635 nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN); 636 reqtime = time.tv_sec; 637 nfsm_request(dvp, NFSPROC_LOOKUP, cnp->cn_proc, cnp->cn_cred); 638 nfsmout: 639 if (error) { 640 if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME) && 641 (flags & ISLASTCN) && error == ENOENT) 642 error = EJUSTRETURN; 643 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)) 644 cnp->cn_flags |= SAVENAME; 645 return (error); 646 } 647 if (nmp->nm_flag & NFSMNT_NQNFS) { 648 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 649 if (*tl) { 650 nqlflag = fxdr_unsigned(int, *tl); 651 nfsm_dissect(tl, u_long *, 4*NFSX_UNSIGNED); 652 cachable = fxdr_unsigned(int, *tl++); 653 reqtime += fxdr_unsigned(int, *tl++); 654 fxdr_hyper(tl, &frev); 655 } else 656 nqlflag = 0; 657 } 658 nfsm_dissect(fhp, nfsv2fh_t *, NFSX_FH); 659 660 /* 661 * Handle RENAME case... 662 */ 663 if (cnp->cn_nameiop == RENAME && wantparent && (flags & ISLASTCN)) { 664 if (!bcmp(np->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 665 m_freem(mrep); 666 return (EISDIR); 667 } 668 if (error = nfs_nget(dvp->v_mount, fhp, &np)) { 669 m_freem(mrep); 670 return (error); 671 } 672 newvp = NFSTOV(np); 673 if (error = 674 nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) { 675 vrele(newvp); 676 m_freem(mrep); 677 return (error); 678 } 679 *vpp = newvp; 680 m_freem(mrep); 681 cnp->cn_flags |= SAVENAME; 682 return (0); 683 } 684 685 if (!bcmp(np->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 686 VREF(dvp); 687 newvp = dvp; 688 } else { 689 if (error = nfs_nget(dvp->v_mount, fhp, &np)) { 690 m_freem(mrep); 691 return (error); 692 } 693 newvp = NFSTOV(np); 694 } 695 if (error = nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) { 696 vrele(newvp); 697 m_freem(mrep); 698 return (error); 699 } 700 m_freem(mrep); 701 *vpp = newvp; 702 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)) 703 cnp->cn_flags |= SAVENAME; 704 if ((cnp->cn_flags & MAKEENTRY) && 705 (cnp->cn_nameiop != DELETE || !(flags & ISLASTCN))) { 706 if ((nmp->nm_flag & NFSMNT_NQNFS) == 0) 707 np->n_ctime = np->n_vattr.va_ctime.ts_sec; 708 else if (nqlflag && reqtime > time.tv_sec) 709 nqnfs_clientlease(nmp, np, nqlflag, cachable, reqtime, 710 frev); 711 cache_enter(dvp, *vpp, cnp); 712 } 713 return (0); 714 } 715 716 /* 717 * nfs read call. 718 * Just call nfs_bioread() to do the work. 719 */ 720 int 721 nfs_read(ap) 722 struct vop_read_args /* { 723 struct vnode *a_vp; 724 struct uio *a_uio; 725 int a_ioflag; 726 struct ucred *a_cred; 727 } */ *ap; 728 { 729 register struct vnode *vp = ap->a_vp; 730 731 if (vp->v_type != VREG) 732 return (EPERM); 733 return (nfs_bioread(vp, ap->a_uio, ap->a_ioflag, ap->a_cred)); 734 } 735 736 /* 737 * nfs readlink call 738 */ 739 int 740 nfs_readlink(ap) 741 struct vop_readlink_args /* { 742 struct vnode *a_vp; 743 struct uio *a_uio; 744 struct ucred *a_cred; 745 } */ *ap; 746 { 747 register struct vnode *vp = ap->a_vp; 748 749 if (vp->v_type != VLNK) 750 return (EPERM); 751 return (nfs_bioread(vp, ap->a_uio, 0, ap->a_cred)); 752 } 753 754 /* 755 * Do a readlink rpc. 756 * Called by nfs_doio() from below the buffer cache. 757 */ 758 int 759 nfs_readlinkrpc(vp, uiop, cred) 760 register struct vnode *vp; 761 struct uio *uiop; 762 struct ucred *cred; 763 { 764 register u_long *tl; 765 register caddr_t cp; 766 register long t1; 767 caddr_t bpos, dpos, cp2; 768 int error = 0; 769 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 770 long len; 771 772 nfsstats.rpccnt[NFSPROC_READLINK]++; 773 nfsm_reqhead(vp, NFSPROC_READLINK, NFSX_FH); 774 nfsm_fhtom(vp); 775 nfsm_request(vp, NFSPROC_READLINK, uiop->uio_procp, cred); 776 nfsm_strsiz(len, NFS_MAXPATHLEN); 777 nfsm_mtouio(uiop, len); 778 nfsm_reqdone; 779 return (error); 780 } 781 782 /* 783 * nfs read rpc call 784 * Ditto above 785 */ 786 int 787 nfs_readrpc(vp, uiop, cred) 788 register struct vnode *vp; 789 struct uio *uiop; 790 struct ucred *cred; 791 { 792 register u_long *tl; 793 register caddr_t cp; 794 register long t1; 795 caddr_t bpos, dpos, cp2; 796 int error = 0; 797 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 798 struct nfsmount *nmp; 799 long len, retlen, tsiz; 800 801 nmp = VFSTONFS(vp->v_mount); 802 tsiz = uiop->uio_resid; 803 if (uiop->uio_offset + tsiz > 0xffffffff && 804 (nmp->nm_flag & NFSMNT_NQNFS) == 0) 805 return (EFBIG); 806 while (tsiz > 0) { 807 nfsstats.rpccnt[NFSPROC_READ]++; 808 len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz; 809 nfsm_reqhead(vp, NFSPROC_READ, NFSX_FH+NFSX_UNSIGNED*3); 810 nfsm_fhtom(vp); 811 nfsm_build(tl, u_long *, NFSX_UNSIGNED*3); 812 if (nmp->nm_flag & NFSMNT_NQNFS) { 813 txdr_hyper(&uiop->uio_offset, tl); 814 *(tl + 2) = txdr_unsigned(len); 815 } else { 816 *tl++ = txdr_unsigned(uiop->uio_offset); 817 *tl++ = txdr_unsigned(len); 818 *tl = 0; 819 } 820 nfsm_request(vp, NFSPROC_READ, uiop->uio_procp, cred); 821 nfsm_loadattr(vp, (struct vattr *)0); 822 nfsm_strsiz(retlen, nmp->nm_rsize); 823 nfsm_mtouio(uiop, retlen); 824 m_freem(mrep); 825 if (retlen < len) 826 tsiz = 0; 827 else 828 tsiz -= len; 829 } 830 nfsmout: 831 return (error); 832 } 833 834 /* 835 * nfs write call 836 */ 837 int 838 nfs_writerpc(vp, uiop, cred, ioflags) 839 register struct vnode *vp; 840 struct uio *uiop; 841 struct ucred *cred; 842 int ioflags; 843 { 844 register u_long *tl; 845 register caddr_t cp; 846 register long t1; 847 caddr_t bpos, dpos, cp2; 848 int error = 0; 849 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 850 struct nfsmount *nmp; 851 struct nfsnode *np = VTONFS(vp); 852 u_quad_t frev; 853 long len, tsiz; 854 855 nmp = VFSTONFS(vp->v_mount); 856 tsiz = uiop->uio_resid; 857 if (uiop->uio_offset + tsiz > 0xffffffff && 858 (nmp->nm_flag & NFSMNT_NQNFS) == 0) 859 return (EFBIG); 860 while (tsiz > 0) { 861 nfsstats.rpccnt[NFSPROC_WRITE]++; 862 len = (tsiz > nmp->nm_wsize) ? nmp->nm_wsize : tsiz; 863 nfsm_reqhead(vp, NFSPROC_WRITE, 864 NFSX_FH+NFSX_UNSIGNED*4+nfsm_rndup(len)); 865 nfsm_fhtom(vp); 866 nfsm_build(tl, u_long *, NFSX_UNSIGNED * 4); 867 if (nmp->nm_flag & NFSMNT_NQNFS) { 868 txdr_hyper(&uiop->uio_offset, tl); 869 tl += 2; 870 if (ioflags & IO_APPEND) 871 *tl++ = txdr_unsigned(1); 872 else 873 *tl++ = 0; 874 } else { 875 *++tl = txdr_unsigned(uiop->uio_offset); 876 tl += 2; 877 } 878 *tl = txdr_unsigned(len); 879 nfsm_uiotom(uiop, len); 880 nfsm_request(vp, NFSPROC_WRITE, uiop->uio_procp, cred); 881 nfsm_loadattr(vp, (struct vattr *)0); 882 if (nmp->nm_flag & NFSMNT_MYWRITE) 883 VTONFS(vp)->n_mtime = VTONFS(vp)->n_vattr.va_mtime.ts_sec; 884 else if ((nmp->nm_flag & NFSMNT_NQNFS) && 885 NQNFS_CKCACHABLE(vp, NQL_WRITE)) { 886 nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED); 887 fxdr_hyper(tl, &frev); 888 if (frev > np->n_brev) 889 np->n_brev = frev; 890 } 891 m_freem(mrep); 892 tsiz -= len; 893 } 894 nfsmout: 895 if (error) 896 uiop->uio_resid = tsiz; 897 return (error); 898 } 899 900 /* 901 * nfs mknod call 902 * This is a kludge. Use a create rpc but with the IFMT bits of the mode 903 * set to specify the file type and the size field for rdev. 904 */ 905 /* ARGSUSED */ 906 int 907 nfs_mknod(ap) 908 struct vop_mknod_args /* { 909 struct vnode *a_dvp; 910 struct vnode **a_vpp; 911 struct componentname *a_cnp; 912 struct vattr *a_vap; 913 } */ *ap; 914 { 915 register struct vnode *dvp = ap->a_dvp; 916 register struct vattr *vap = ap->a_vap; 917 register struct componentname *cnp = ap->a_cnp; 918 register struct nfsv2_sattr *sp; 919 register u_long *tl; 920 register caddr_t cp; 921 register long t1, t2; 922 struct vnode *newvp; 923 char *cp2; 924 caddr_t bpos, dpos; 925 int error = 0, isnq; 926 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 927 u_long rdev; 928 929 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 930 if (vap->va_type == VCHR || vap->va_type == VBLK) 931 rdev = txdr_unsigned(vap->va_rdev); 932 #ifdef FIFO 933 else if (vap->va_type == VFIFO) 934 rdev = 0xffffffff; 935 #endif /* FIFO */ 936 else { 937 VOP_ABORTOP(dvp, cnp); 938 vput(dvp); 939 return (EOPNOTSUPP); 940 } 941 nfsstats.rpccnt[NFSPROC_CREATE]++; 942 nfsm_reqhead(dvp, NFSPROC_CREATE, 943 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)+NFSX_SATTR(isnq)); 944 nfsm_fhtom(dvp); 945 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 946 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 947 sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode); 948 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 949 sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid); 950 if (isnq) { 951 sp->sa_nqrdev = rdev; 952 sp->sa_nqflags = 0; 953 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 954 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 955 } else { 956 sp->sa_nfssize = rdev; 957 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 958 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 959 } 960 nfsm_request(dvp, NFSPROC_CREATE, cnp->cn_proc, cnp->cn_cred); 961 nfsm_mtofh(dvp, newvp); 962 nfsm_reqdone; 963 if (!error && (cnp->cn_flags & MAKEENTRY)) 964 cache_enter(dvp, newvp, cnp); 965 FREE(cnp->cn_pnbuf, M_NAMEI); 966 VTONFS(dvp)->n_flag |= NMODIFIED; 967 vrele(dvp); 968 return (error); 969 } 970 971 /* 972 * nfs file create call 973 */ 974 int 975 nfs_create(ap) 976 struct vop_create_args /* { 977 struct vnode *a_dvp; 978 struct vnode **a_vpp; 979 struct componentname *a_cnp; 980 struct vattr *a_vap; 981 } */ *ap; 982 { 983 register struct vnode *dvp = ap->a_dvp; 984 register struct vattr *vap = ap->a_vap; 985 register struct componentname *cnp = ap->a_cnp; 986 register struct nfsv2_sattr *sp; 987 register u_long *tl; 988 register caddr_t cp; 989 register long t1, t2; 990 caddr_t bpos, dpos, cp2; 991 int error = 0, isnq; 992 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 993 994 nfsstats.rpccnt[NFSPROC_CREATE]++; 995 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 996 nfsm_reqhead(dvp, NFSPROC_CREATE, 997 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)+NFSX_SATTR(isnq)); 998 nfsm_fhtom(dvp); 999 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1000 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 1001 sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode); 1002 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 1003 sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid); 1004 if (isnq) { 1005 u_quad_t qval = 0; 1006 1007 txdr_hyper(&qval, &sp->sa_nqsize); 1008 sp->sa_nqflags = 0; 1009 sp->sa_nqrdev = -1; 1010 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 1011 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 1012 } else { 1013 sp->sa_nfssize = 0; 1014 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 1015 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 1016 } 1017 nfsm_request(dvp, NFSPROC_CREATE, cnp->cn_proc, cnp->cn_cred); 1018 nfsm_mtofh(dvp, *ap->a_vpp); 1019 nfsm_reqdone; 1020 if (!error && (cnp->cn_flags & MAKEENTRY)) 1021 cache_enter(dvp, *ap->a_vpp, cnp); 1022 FREE(cnp->cn_pnbuf, M_NAMEI); 1023 VTONFS(dvp)->n_flag |= NMODIFIED; 1024 vrele(dvp); 1025 return (error); 1026 } 1027 1028 /* 1029 * nfs file remove call 1030 * To try and make nfs semantics closer to ufs semantics, a file that has 1031 * other processes using the vnode is renamed instead of removed and then 1032 * removed later on the last close. 1033 * - If v_usecount > 1 1034 * If a rename is not already in the works 1035 * call nfs_sillyrename() to set it up 1036 * else 1037 * do the remove rpc 1038 */ 1039 int 1040 nfs_remove(ap) 1041 struct vop_remove_args /* { 1042 struct vnodeop_desc *a_desc; 1043 struct vnode * a_dvp; 1044 struct vnode * a_vp; 1045 struct componentname * a_cnp; 1046 } */ *ap; 1047 { 1048 register struct vnode *vp = ap->a_vp; 1049 register struct vnode *dvp = ap->a_dvp; 1050 register struct componentname *cnp = ap->a_cnp; 1051 register struct nfsnode *np = VTONFS(vp); 1052 register u_long *tl; 1053 register caddr_t cp; 1054 register long t2; 1055 caddr_t bpos, dpos; 1056 int error = 0; 1057 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1058 1059 if (vp->v_usecount > 1) { 1060 if (!np->n_sillyrename) 1061 error = nfs_sillyrename(dvp, vp, cnp); 1062 } else { 1063 /* 1064 * Purge the name cache so that the chance of a lookup for 1065 * the name succeeding while the remove is in progress is 1066 * minimized. Without node locking it can still happen, such 1067 * that an I/O op returns ESTALE, but since you get this if 1068 * another host removes the file.. 1069 */ 1070 cache_purge(vp); 1071 /* 1072 * Throw away biocache buffers. Mainly to avoid 1073 * unnecessary delayed writes. 1074 */ 1075 error = nfs_vinvalbuf(vp, 0, cnp->cn_cred, cnp->cn_proc, 1); 1076 if (error == EINTR) 1077 return (error); 1078 /* Do the rpc */ 1079 nfsstats.rpccnt[NFSPROC_REMOVE]++; 1080 nfsm_reqhead(dvp, NFSPROC_REMOVE, 1081 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)); 1082 nfsm_fhtom(dvp); 1083 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1084 nfsm_request(dvp, NFSPROC_REMOVE, cnp->cn_proc, cnp->cn_cred); 1085 nfsm_reqdone; 1086 FREE(cnp->cn_pnbuf, M_NAMEI); 1087 VTONFS(dvp)->n_flag |= NMODIFIED; 1088 /* 1089 * Kludge City: If the first reply to the remove rpc is lost.. 1090 * the reply to the retransmitted request will be ENOENT 1091 * since the file was in fact removed 1092 * Therefore, we cheat and return success. 1093 */ 1094 if (error == ENOENT) 1095 error = 0; 1096 } 1097 np->n_attrstamp = 0; 1098 vrele(dvp); 1099 vrele(vp); 1100 return (error); 1101 } 1102 1103 /* 1104 * nfs file remove rpc called from nfs_inactive 1105 */ 1106 int 1107 nfs_removeit(sp) 1108 register struct sillyrename *sp; 1109 { 1110 register u_long *tl; 1111 register caddr_t cp; 1112 register long t2; 1113 caddr_t bpos, dpos; 1114 int error = 0; 1115 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1116 1117 nfsstats.rpccnt[NFSPROC_REMOVE]++; 1118 nfsm_reqhead(sp->s_dvp, NFSPROC_REMOVE, 1119 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(sp->s_namlen)); 1120 nfsm_fhtom(sp->s_dvp); 1121 nfsm_strtom(sp->s_name, sp->s_namlen, NFS_MAXNAMLEN); 1122 nfsm_request(sp->s_dvp, NFSPROC_REMOVE, NULL, sp->s_cred); 1123 nfsm_reqdone; 1124 VTONFS(sp->s_dvp)->n_flag |= NMODIFIED; 1125 return (error); 1126 } 1127 1128 /* 1129 * nfs file rename call 1130 */ 1131 int 1132 nfs_rename(ap) 1133 struct vop_rename_args /* { 1134 struct vnode *a_fdvp; 1135 struct vnode *a_fvp; 1136 struct componentname *a_fcnp; 1137 struct vnode *a_tdvp; 1138 struct vnode *a_tvp; 1139 struct componentname *a_tcnp; 1140 } */ *ap; 1141 { 1142 register struct vnode *fvp = ap->a_fvp; 1143 register struct vnode *tvp = ap->a_tvp; 1144 register struct vnode *fdvp = ap->a_fdvp; 1145 register struct vnode *tdvp = ap->a_tdvp; 1146 register struct componentname *tcnp = ap->a_tcnp; 1147 register struct componentname *fcnp = ap->a_fcnp; 1148 register u_long *tl; 1149 register caddr_t cp; 1150 register long t2; 1151 caddr_t bpos, dpos; 1152 int error = 0; 1153 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1154 1155 /* Check for cross-device rename */ 1156 if ((fvp->v_mount != tdvp->v_mount) || 1157 (tvp && (fvp->v_mount != tvp->v_mount))) { 1158 error = EXDEV; 1159 goto out; 1160 } 1161 1162 1163 nfsstats.rpccnt[NFSPROC_RENAME]++; 1164 nfsm_reqhead(fdvp, NFSPROC_RENAME, 1165 (NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(fcnp->cn_namelen)+ 1166 nfsm_rndup(fcnp->cn_namelen)); /* or fcnp->cn_cred?*/ 1167 nfsm_fhtom(fdvp); 1168 nfsm_strtom(fcnp->cn_nameptr, fcnp->cn_namelen, NFS_MAXNAMLEN); 1169 nfsm_fhtom(tdvp); 1170 nfsm_strtom(tcnp->cn_nameptr, tcnp->cn_namelen, NFS_MAXNAMLEN); 1171 nfsm_request(fdvp, NFSPROC_RENAME, tcnp->cn_proc, tcnp->cn_cred); 1172 nfsm_reqdone; 1173 VTONFS(fdvp)->n_flag |= NMODIFIED; 1174 VTONFS(tdvp)->n_flag |= NMODIFIED; 1175 if (fvp->v_type == VDIR) { 1176 if (tvp != NULL && tvp->v_type == VDIR) 1177 cache_purge(tdvp); 1178 cache_purge(fdvp); 1179 } 1180 out: 1181 if (tdvp == tvp) 1182 vrele(tdvp); 1183 else 1184 vput(tdvp); 1185 if (tvp) 1186 vput(tvp); 1187 vrele(fdvp); 1188 vrele(fvp); 1189 /* 1190 * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry. 1191 */ 1192 if (error == ENOENT) 1193 error = 0; 1194 return (error); 1195 } 1196 1197 /* 1198 * nfs file rename rpc called from nfs_remove() above 1199 */ 1200 int 1201 nfs_renameit(sdvp, scnp, sp) 1202 struct vnode *sdvp; 1203 struct componentname *scnp; 1204 register struct sillyrename *sp; 1205 { 1206 register u_long *tl; 1207 register caddr_t cp; 1208 register long t2; 1209 caddr_t bpos, dpos; 1210 int error = 0; 1211 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1212 1213 nfsstats.rpccnt[NFSPROC_RENAME]++; 1214 nfsm_reqhead(sdvp, NFSPROC_RENAME, 1215 (NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(scnp->cn_namelen)+ 1216 nfsm_rndup(sp->s_namlen)); 1217 nfsm_fhtom(sdvp); 1218 nfsm_strtom(scnp->cn_nameptr, scnp->cn_namelen, NFS_MAXNAMLEN); 1219 nfsm_fhtom(sdvp); 1220 nfsm_strtom(sp->s_name, sp->s_namlen, NFS_MAXNAMLEN); 1221 nfsm_request(sdvp, NFSPROC_RENAME, scnp->cn_proc, scnp->cn_cred); 1222 nfsm_reqdone; 1223 FREE(scnp->cn_pnbuf, M_NAMEI); 1224 VTONFS(sdvp)->n_flag |= NMODIFIED; 1225 return (error); 1226 } 1227 1228 /* 1229 * nfs hard link create call 1230 */ 1231 int 1232 nfs_link(ap) 1233 struct vop_link_args /* { 1234 struct vnode *a_vp; 1235 struct vnode *a_tdvp; 1236 struct componentname *a_cnp; 1237 } */ *ap; 1238 { 1239 register struct vnode *vp = ap->a_vp; 1240 register struct vnode *tdvp = ap->a_tdvp; 1241 register struct componentname *cnp = ap->a_cnp; 1242 register u_long *tl; 1243 register caddr_t cp; 1244 register long t2; 1245 caddr_t bpos, dpos; 1246 int error = 0; 1247 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1248 1249 if (vp->v_mount != tdvp->v_mount) { 1250 /*VOP_ABORTOP(vp, cnp);*/ 1251 if (tdvp == vp) 1252 vrele(vp); 1253 else 1254 vput(vp); 1255 return (EXDEV); 1256 } 1257 1258 nfsstats.rpccnt[NFSPROC_LINK]++; 1259 nfsm_reqhead(tdvp, NFSPROC_LINK, 1260 NFSX_FH*2+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)); 1261 nfsm_fhtom(tdvp); 1262 nfsm_fhtom(vp); 1263 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1264 nfsm_request(tdvp, NFSPROC_LINK, cnp->cn_proc, cnp->cn_cred); 1265 nfsm_reqdone; 1266 FREE(cnp->cn_pnbuf, M_NAMEI); 1267 VTONFS(tdvp)->n_attrstamp = 0; 1268 VTONFS(vp)->n_flag |= NMODIFIED; 1269 vrele(vp); 1270 /* 1271 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 1272 */ 1273 if (error == EEXIST) 1274 error = 0; 1275 return (error); 1276 } 1277 1278 /* 1279 * nfs symbolic link create call 1280 */ 1281 /* start here */ 1282 int 1283 nfs_symlink(ap) 1284 struct vop_symlink_args /* { 1285 struct vnode *a_dvp; 1286 struct vnode **a_vpp; 1287 struct componentname *a_cnp; 1288 struct vattr *a_vap; 1289 char *a_target; 1290 } */ *ap; 1291 { 1292 register struct vnode *dvp = ap->a_dvp; 1293 register struct vattr *vap = ap->a_vap; 1294 register struct componentname *cnp = ap->a_cnp; 1295 register struct nfsv2_sattr *sp; 1296 register u_long *tl; 1297 register caddr_t cp; 1298 register long t2; 1299 caddr_t bpos, dpos; 1300 int slen, error = 0, isnq; 1301 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1302 1303 nfsstats.rpccnt[NFSPROC_SYMLINK]++; 1304 slen = strlen(ap->a_target); 1305 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 1306 nfsm_reqhead(dvp, NFSPROC_SYMLINK, NFSX_FH+2*NFSX_UNSIGNED+ 1307 nfsm_rndup(cnp->cn_namelen)+nfsm_rndup(slen)+NFSX_SATTR(isnq)); 1308 nfsm_fhtom(dvp); 1309 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1310 nfsm_strtom(ap->a_target, slen, NFS_MAXPATHLEN); 1311 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 1312 sp->sa_mode = vtonfs_mode(VLNK, vap->va_mode); 1313 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 1314 sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid); 1315 if (isnq) { 1316 quad_t qval = -1; 1317 1318 txdr_hyper(&qval, &sp->sa_nqsize); 1319 sp->sa_nqflags = 0; 1320 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 1321 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 1322 } else { 1323 sp->sa_nfssize = -1; 1324 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 1325 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 1326 } 1327 nfsm_request(dvp, NFSPROC_SYMLINK, cnp->cn_proc, cnp->cn_cred); 1328 nfsm_reqdone; 1329 FREE(cnp->cn_pnbuf, M_NAMEI); 1330 VTONFS(dvp)->n_flag |= NMODIFIED; 1331 vrele(dvp); 1332 /* 1333 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 1334 */ 1335 if (error == EEXIST) 1336 error = 0; 1337 return (error); 1338 } 1339 1340 /* 1341 * nfs make dir call 1342 */ 1343 int 1344 nfs_mkdir(ap) 1345 struct vop_mkdir_args /* { 1346 struct vnode *a_dvp; 1347 struct vnode **a_vpp; 1348 struct componentname *a_cnp; 1349 struct vattr *a_vap; 1350 } */ *ap; 1351 { 1352 register struct vnode *dvp = ap->a_dvp; 1353 register struct vattr *vap = ap->a_vap; 1354 register struct componentname *cnp = ap->a_cnp; 1355 register struct vnode **vpp = ap->a_vpp; 1356 register struct nfsv2_sattr *sp; 1357 register u_long *tl; 1358 register caddr_t cp; 1359 register long t1, t2; 1360 register int len; 1361 caddr_t bpos, dpos, cp2; 1362 int error = 0, firsttry = 1, isnq; 1363 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1364 1365 len = cnp->cn_namelen; 1366 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 1367 nfsstats.rpccnt[NFSPROC_MKDIR]++; 1368 nfsm_reqhead(dvp, NFSPROC_MKDIR, 1369 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)+NFSX_SATTR(isnq)); 1370 nfsm_fhtom(dvp); 1371 nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN); 1372 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 1373 sp->sa_mode = vtonfs_mode(VDIR, vap->va_mode); 1374 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 1375 sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid); 1376 if (isnq) { 1377 quad_t qval = -1; 1378 1379 txdr_hyper(&qval, &sp->sa_nqsize); 1380 sp->sa_nqflags = 0; 1381 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 1382 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 1383 } else { 1384 sp->sa_nfssize = -1; 1385 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 1386 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 1387 } 1388 nfsm_request(dvp, NFSPROC_MKDIR, cnp->cn_proc, cnp->cn_cred); 1389 nfsm_mtofh(dvp, *vpp); 1390 nfsm_reqdone; 1391 VTONFS(dvp)->n_flag |= NMODIFIED; 1392 /* 1393 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry 1394 * if we can succeed in looking up the directory. 1395 * "firsttry" is necessary since the macros may "goto nfsmout" which 1396 * is above the if on errors. (Ugh) 1397 */ 1398 if (error == EEXIST && firsttry) { 1399 firsttry = 0; 1400 error = 0; 1401 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 1402 *vpp = NULL; 1403 nfsm_reqhead(dvp, NFSPROC_LOOKUP, 1404 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 1405 nfsm_fhtom(dvp); 1406 nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN); 1407 nfsm_request(dvp, NFSPROC_LOOKUP, cnp->cn_proc, cnp->cn_cred); 1408 nfsm_mtofh(dvp, *vpp); 1409 if ((*vpp)->v_type != VDIR) { 1410 vput(*vpp); 1411 error = EEXIST; 1412 } 1413 m_freem(mrep); 1414 } 1415 FREE(cnp->cn_pnbuf, M_NAMEI); 1416 vrele(dvp); 1417 return (error); 1418 } 1419 1420 /* 1421 * nfs remove directory call 1422 */ 1423 int 1424 nfs_rmdir(ap) 1425 struct vop_rmdir_args /* { 1426 struct vnode *a_dvp; 1427 struct vnode *a_vp; 1428 struct componentname *a_cnp; 1429 } */ *ap; 1430 { 1431 register struct vnode *vp = ap->a_vp; 1432 register struct vnode *dvp = ap->a_dvp; 1433 register struct componentname *cnp = ap->a_cnp; 1434 register u_long *tl; 1435 register caddr_t cp; 1436 register long t2; 1437 caddr_t bpos, dpos; 1438 int error = 0; 1439 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1440 1441 if (dvp == vp) { 1442 vrele(dvp); 1443 vrele(dvp); 1444 FREE(cnp->cn_pnbuf, M_NAMEI); 1445 return (EINVAL); 1446 } 1447 nfsstats.rpccnt[NFSPROC_RMDIR]++; 1448 nfsm_reqhead(dvp, NFSPROC_RMDIR, 1449 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)); 1450 nfsm_fhtom(dvp); 1451 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1452 nfsm_request(dvp, NFSPROC_RMDIR, cnp->cn_proc, cnp->cn_cred); 1453 nfsm_reqdone; 1454 FREE(cnp->cn_pnbuf, M_NAMEI); 1455 VTONFS(dvp)->n_flag |= NMODIFIED; 1456 cache_purge(dvp); 1457 cache_purge(vp); 1458 vrele(vp); 1459 vrele(dvp); 1460 /* 1461 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 1462 */ 1463 if (error == ENOENT) 1464 error = 0; 1465 return (error); 1466 } 1467 1468 /* 1469 * nfs readdir call 1470 * Although cookie is defined as opaque, I translate it to/from net byte 1471 * order so that it looks more sensible. This appears consistent with the 1472 * Ultrix implementation of NFS. 1473 */ 1474 int 1475 nfs_readdir(ap) 1476 struct vop_readdir_args /* { 1477 struct vnode *a_vp; 1478 struct uio *a_uio; 1479 struct ucred *a_cred; 1480 } */ *ap; 1481 { 1482 register struct vnode *vp = ap->a_vp; 1483 register struct nfsnode *np = VTONFS(vp); 1484 register struct uio *uio = ap->a_uio; 1485 int tresid, error; 1486 struct vattr vattr; 1487 1488 if (vp->v_type != VDIR) 1489 return (EPERM); 1490 /* 1491 * First, check for hit on the EOF offset cache 1492 */ 1493 if (uio->uio_offset != 0 && uio->uio_offset == np->n_direofoffset && 1494 (np->n_flag & NMODIFIED) == 0) { 1495 if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) { 1496 if (NQNFS_CKCACHABLE(vp, NQL_READ)) { 1497 nfsstats.direofcache_hits++; 1498 return (0); 1499 } 1500 } else if (VOP_GETATTR(vp, &vattr, ap->a_cred, uio->uio_procp) == 0 && 1501 np->n_mtime == vattr.va_mtime.ts_sec) { 1502 nfsstats.direofcache_hits++; 1503 return (0); 1504 } 1505 } 1506 1507 /* 1508 * Call nfs_bioread() to do the real work. 1509 */ 1510 tresid = uio->uio_resid; 1511 error = nfs_bioread(vp, uio, 0, ap->a_cred); 1512 1513 if (!error && uio->uio_resid == tresid) 1514 nfsstats.direofcache_misses++; 1515 return (error); 1516 } 1517 1518 /* 1519 * Readdir rpc call. 1520 * Called from below the buffer cache by nfs_doio(). 1521 */ 1522 int 1523 nfs_readdirrpc(vp, uiop, cred) 1524 register struct vnode *vp; 1525 struct uio *uiop; 1526 struct ucred *cred; 1527 { 1528 register long len; 1529 register struct dirent *dp; 1530 register u_long *tl; 1531 register caddr_t cp; 1532 register long t1; 1533 long tlen, lastlen; 1534 caddr_t bpos, dpos, cp2; 1535 int error = 0; 1536 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1537 struct mbuf *md2; 1538 caddr_t dpos2; 1539 int siz; 1540 int more_dirs = 1; 1541 u_long off, savoff; 1542 struct dirent *savdp; 1543 struct nfsmount *nmp; 1544 struct nfsnode *np = VTONFS(vp); 1545 long tresid; 1546 1547 nmp = VFSTONFS(vp->v_mount); 1548 tresid = uiop->uio_resid; 1549 /* 1550 * Loop around doing readdir rpc's of size uio_resid or nm_rsize, 1551 * whichever is smaller, truncated to a multiple of NFS_DIRBLKSIZ. 1552 * The stopping criteria is EOF or buffer full. 1553 */ 1554 while (more_dirs && uiop->uio_resid >= NFS_DIRBLKSIZ) { 1555 nfsstats.rpccnt[NFSPROC_READDIR]++; 1556 nfsm_reqhead(vp, NFSPROC_READDIR, 1557 NFSX_FH + 2 * NFSX_UNSIGNED); 1558 nfsm_fhtom(vp); 1559 nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED); 1560 off = (u_long)uiop->uio_offset; 1561 *tl++ = txdr_unsigned(off); 1562 *tl = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ? 1563 nmp->nm_rsize : uiop->uio_resid) & ~(NFS_DIRBLKSIZ-1)); 1564 nfsm_request(vp, NFSPROC_READDIR, uiop->uio_procp, cred); 1565 siz = 0; 1566 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1567 more_dirs = fxdr_unsigned(int, *tl); 1568 1569 /* Save the position so that we can do nfsm_mtouio() later */ 1570 dpos2 = dpos; 1571 md2 = md; 1572 1573 /* loop thru the dir entries, doctoring them to 4bsd form */ 1574 #ifdef lint 1575 dp = (struct dirent *)0; 1576 #endif /* lint */ 1577 while (more_dirs && siz < uiop->uio_resid) { 1578 savoff = off; /* Hold onto offset and dp */ 1579 savdp = dp; 1580 nfsm_dissecton(tl, u_long *, 2 * NFSX_UNSIGNED); 1581 dp = (struct dirent *)tl; 1582 dp->d_fileno = fxdr_unsigned(u_long, *tl++); 1583 len = fxdr_unsigned(int, *tl); 1584 if (len <= 0 || len > NFS_MAXNAMLEN) { 1585 error = EBADRPC; 1586 m_freem(mrep); 1587 goto nfsmout; 1588 } 1589 dp->d_namlen = (u_char)len; 1590 dp->d_type = DT_UNKNOWN; 1591 nfsm_adv(len); /* Point past name */ 1592 tlen = nfsm_rndup(len); 1593 /* 1594 * This should not be necessary, but some servers have 1595 * broken XDR such that these bytes are not null filled. 1596 */ 1597 if (tlen != len) { 1598 *dpos = '\0'; /* Null-terminate */ 1599 nfsm_adv(tlen - len); 1600 len = tlen; 1601 } 1602 nfsm_dissecton(tl, u_long *, 2 * NFSX_UNSIGNED); 1603 off = fxdr_unsigned(u_long, *tl); 1604 *tl++ = 0; /* Ensures null termination of name */ 1605 more_dirs = fxdr_unsigned(int, *tl); 1606 dp->d_reclen = len + 4 * NFSX_UNSIGNED; 1607 siz += dp->d_reclen; 1608 } 1609 /* 1610 * If at end of rpc data, get the eof boolean 1611 */ 1612 if (!more_dirs) { 1613 nfsm_dissecton(tl, u_long *, NFSX_UNSIGNED); 1614 more_dirs = (fxdr_unsigned(int, *tl) == 0); 1615 1616 /* 1617 * If at EOF, cache directory offset 1618 */ 1619 if (!more_dirs) 1620 np->n_direofoffset = off; 1621 } 1622 /* 1623 * If there is too much to fit in the data buffer, use savoff and 1624 * savdp to trim off the last record. 1625 * --> we are not at eof 1626 */ 1627 if (siz > uiop->uio_resid) { 1628 off = savoff; 1629 siz -= dp->d_reclen; 1630 dp = savdp; 1631 more_dirs = 0; /* Paranoia */ 1632 } 1633 if (siz > 0) { 1634 lastlen = dp->d_reclen; 1635 md = md2; 1636 dpos = dpos2; 1637 nfsm_mtouio(uiop, siz); 1638 uiop->uio_offset = (off_t)off; 1639 } else 1640 more_dirs = 0; /* Ugh, never happens, but in case.. */ 1641 m_freem(mrep); 1642 } 1643 /* 1644 * Fill last record, iff any, out to a multiple of NFS_DIRBLKSIZ 1645 * by increasing d_reclen for the last record. 1646 */ 1647 if (uiop->uio_resid < tresid) { 1648 len = uiop->uio_resid & (NFS_DIRBLKSIZ - 1); 1649 if (len > 0) { 1650 dp = (struct dirent *) 1651 (uiop->uio_iov->iov_base - lastlen); 1652 dp->d_reclen += len; 1653 uiop->uio_iov->iov_base += len; 1654 uiop->uio_iov->iov_len -= len; 1655 uiop->uio_resid -= len; 1656 } 1657 } 1658 nfsmout: 1659 return (error); 1660 } 1661 1662 /* 1663 * Nqnfs readdir_and_lookup RPC. Used in place of nfs_readdirrpc(). 1664 */ 1665 int 1666 nfs_readdirlookrpc(vp, uiop, cred) 1667 struct vnode *vp; 1668 register struct uio *uiop; 1669 struct ucred *cred; 1670 { 1671 register int len; 1672 register struct dirent *dp; 1673 register u_long *tl; 1674 register caddr_t cp; 1675 register long t1; 1676 caddr_t bpos, dpos, cp2; 1677 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1678 struct nameidata nami, *ndp = &nami; 1679 struct componentname *cnp = &ndp->ni_cnd; 1680 u_long off, endoff, fileno; 1681 time_t reqtime, ltime; 1682 struct nfsmount *nmp; 1683 struct nfsnode *np, *tp; 1684 struct vnode *newvp; 1685 nfsv2fh_t *fhp; 1686 u_quad_t frev; 1687 int error = 0, tlen, more_dirs = 1, tresid, doit, bigenough, i; 1688 int cachable; 1689 1690 if (uiop->uio_iovcnt != 1) 1691 panic("nfs rdirlook"); 1692 nmp = VFSTONFS(vp->v_mount); 1693 tresid = uiop->uio_resid; 1694 ndp->ni_dvp = vp; 1695 newvp = NULLVP; 1696 /* 1697 * Loop around doing readdir rpc's of size uio_resid or nm_rsize, 1698 * whichever is smaller, truncated to a multiple of NFS_DIRBLKSIZ. 1699 * The stopping criteria is EOF or buffer full. 1700 */ 1701 while (more_dirs && uiop->uio_resid >= NFS_DIRBLKSIZ) { 1702 nfsstats.rpccnt[NQNFSPROC_READDIRLOOK]++; 1703 nfsm_reqhead(vp, NQNFSPROC_READDIRLOOK, 1704 NFSX_FH + 3 * NFSX_UNSIGNED); 1705 nfsm_fhtom(vp); 1706 nfsm_build(tl, u_long *, 3 * NFSX_UNSIGNED); 1707 off = (u_long)uiop->uio_offset; 1708 *tl++ = txdr_unsigned(off); 1709 *tl++ = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ? 1710 nmp->nm_rsize : uiop->uio_resid) & ~(NFS_DIRBLKSIZ-1)); 1711 if (nmp->nm_flag & NFSMNT_NQLOOKLEASE) 1712 *tl = txdr_unsigned(nmp->nm_leaseterm); 1713 else 1714 *tl = 0; 1715 reqtime = time.tv_sec; 1716 nfsm_request(vp, NQNFSPROC_READDIRLOOK, uiop->uio_procp, cred); 1717 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1718 more_dirs = fxdr_unsigned(int, *tl); 1719 1720 /* loop thru the dir entries, doctoring them to 4bsd form */ 1721 bigenough = 1; 1722 while (more_dirs && bigenough) { 1723 doit = 1; 1724 nfsm_dissect(tl, u_long *, 4 * NFSX_UNSIGNED); 1725 if (nmp->nm_flag & NFSMNT_NQLOOKLEASE) { 1726 cachable = fxdr_unsigned(int, *tl++); 1727 ltime = reqtime + fxdr_unsigned(int, *tl++); 1728 fxdr_hyper(tl, &frev); 1729 } 1730 nfsm_dissect(fhp, nfsv2fh_t *, NFSX_FH); 1731 if (!bcmp(VTONFS(vp)->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 1732 VREF(vp); 1733 newvp = vp; 1734 np = VTONFS(vp); 1735 } else { 1736 if (error = nfs_nget(vp->v_mount, fhp, &np)) 1737 doit = 0; 1738 newvp = NFSTOV(np); 1739 } 1740 if (error = nfs_loadattrcache(&newvp, &md, &dpos, 1741 (struct vattr *)0)) 1742 doit = 0; 1743 nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); 1744 fileno = fxdr_unsigned(u_long, *tl++); 1745 len = fxdr_unsigned(int, *tl); 1746 if (len <= 0 || len > NFS_MAXNAMLEN) { 1747 error = EBADRPC; 1748 m_freem(mrep); 1749 goto nfsmout; 1750 } 1751 tlen = (len + 4) & ~0x3; 1752 if ((tlen + DIRHDSIZ) > uiop->uio_resid) 1753 bigenough = 0; 1754 if (bigenough && doit) { 1755 dp = (struct dirent *)uiop->uio_iov->iov_base; 1756 dp->d_fileno = fileno; 1757 dp->d_namlen = len; 1758 dp->d_reclen = tlen + DIRHDSIZ; 1759 dp->d_type = 1760 IFTODT(VTTOIF(np->n_vattr.va_type)); 1761 uiop->uio_resid -= DIRHDSIZ; 1762 uiop->uio_iov->iov_base += DIRHDSIZ; 1763 uiop->uio_iov->iov_len -= DIRHDSIZ; 1764 cnp->cn_nameptr = uiop->uio_iov->iov_base; 1765 cnp->cn_namelen = len; 1766 ndp->ni_vp = newvp; 1767 nfsm_mtouio(uiop, len); 1768 cp = uiop->uio_iov->iov_base; 1769 tlen -= len; 1770 for (i = 0; i < tlen; i++) 1771 *cp++ = '\0'; 1772 uiop->uio_iov->iov_base += tlen; 1773 uiop->uio_iov->iov_len -= tlen; 1774 uiop->uio_resid -= tlen; 1775 cnp->cn_hash = 0; 1776 for (cp = cnp->cn_nameptr, i = 1; i <= len; i++, cp++) 1777 cnp->cn_hash += (unsigned char)*cp * i; 1778 if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) && 1779 ltime > time.tv_sec) 1780 nqnfs_clientlease(nmp, np, NQL_READ, 1781 cachable, ltime, frev); 1782 if (cnp->cn_namelen <= NCHNAMLEN) 1783 cache_enter(ndp->ni_dvp, ndp->ni_vp, cnp); 1784 } else { 1785 nfsm_adv(nfsm_rndup(len)); 1786 } 1787 if (newvp != NULLVP) { 1788 vrele(newvp); 1789 newvp = NULLVP; 1790 } 1791 nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); 1792 if (bigenough) 1793 endoff = off = fxdr_unsigned(u_long, *tl++); 1794 else 1795 endoff = fxdr_unsigned(u_long, *tl++); 1796 more_dirs = fxdr_unsigned(int, *tl); 1797 } 1798 /* 1799 * If at end of rpc data, get the eof boolean 1800 */ 1801 if (!more_dirs) { 1802 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1803 more_dirs = (fxdr_unsigned(int, *tl) == 0); 1804 1805 /* 1806 * If at EOF, cache directory offset 1807 */ 1808 if (!more_dirs) 1809 VTONFS(vp)->n_direofoffset = endoff; 1810 } 1811 if (uiop->uio_resid < tresid) 1812 uiop->uio_offset = (off_t)off; 1813 else 1814 more_dirs = 0; 1815 m_freem(mrep); 1816 } 1817 /* 1818 * Fill last record, iff any, out to a multiple of NFS_DIRBLKSIZ 1819 * by increasing d_reclen for the last record. 1820 */ 1821 if (uiop->uio_resid < tresid) { 1822 len = uiop->uio_resid & (NFS_DIRBLKSIZ - 1); 1823 if (len > 0) { 1824 dp->d_reclen += len; 1825 uiop->uio_iov->iov_base += len; 1826 uiop->uio_iov->iov_len -= len; 1827 uiop->uio_resid -= len; 1828 } 1829 } 1830 nfsmout: 1831 if (newvp != NULLVP) 1832 vrele(newvp); 1833 return (error); 1834 } 1835 static char hextoasc[] = "0123456789abcdef"; 1836 1837 /* 1838 * Silly rename. To make the NFS filesystem that is stateless look a little 1839 * more like the "ufs" a remove of an active vnode is translated to a rename 1840 * to a funny looking filename that is removed by nfs_inactive on the 1841 * nfsnode. There is the potential for another process on a different client 1842 * to create the same funny name between the nfs_lookitup() fails and the 1843 * nfs_rename() completes, but... 1844 */ 1845 int 1846 nfs_sillyrename(dvp, vp, cnp) 1847 struct vnode *dvp, *vp; 1848 struct componentname *cnp; 1849 { 1850 register struct nfsnode *np; 1851 register struct sillyrename *sp; 1852 int error; 1853 short pid; 1854 1855 cache_purge(dvp); 1856 np = VTONFS(vp); 1857 #ifdef SILLYSEPARATE 1858 MALLOC(sp, struct sillyrename *, sizeof (struct sillyrename), 1859 M_NFSREQ, M_WAITOK); 1860 #else 1861 sp = &np->n_silly; 1862 #endif 1863 sp->s_cred = crdup(cnp->cn_cred); 1864 sp->s_dvp = dvp; 1865 VREF(dvp); 1866 1867 /* Fudge together a funny name */ 1868 pid = cnp->cn_proc->p_pid; 1869 bcopy(".nfsAxxxx4.4", sp->s_name, 13); 1870 sp->s_namlen = 12; 1871 sp->s_name[8] = hextoasc[pid & 0xf]; 1872 sp->s_name[7] = hextoasc[(pid >> 4) & 0xf]; 1873 sp->s_name[6] = hextoasc[(pid >> 8) & 0xf]; 1874 sp->s_name[5] = hextoasc[(pid >> 12) & 0xf]; 1875 1876 /* Try lookitups until we get one that isn't there */ 1877 while (nfs_lookitup(sp, (nfsv2fh_t *)0, cnp->cn_proc) == 0) { 1878 sp->s_name[4]++; 1879 if (sp->s_name[4] > 'z') { 1880 error = EINVAL; 1881 goto bad; 1882 } 1883 } 1884 if (error = nfs_renameit(dvp, cnp, sp)) 1885 goto bad; 1886 nfs_lookitup(sp, &np->n_fh, cnp->cn_proc); 1887 np->n_sillyrename = sp; 1888 return (0); 1889 bad: 1890 vrele(sp->s_dvp); 1891 crfree(sp->s_cred); 1892 #ifdef SILLYSEPARATE 1893 free((caddr_t)sp, M_NFSREQ); 1894 #endif 1895 return (error); 1896 } 1897 1898 /* 1899 * Look up a file name for silly rename stuff. 1900 * Just like nfs_lookup() except that it doesn't load returned values 1901 * into the nfsnode table. 1902 * If fhp != NULL it copies the returned file handle out 1903 */ 1904 int 1905 nfs_lookitup(sp, fhp, procp) 1906 register struct sillyrename *sp; 1907 nfsv2fh_t *fhp; 1908 struct proc *procp; 1909 { 1910 register struct vnode *vp = sp->s_dvp; 1911 register u_long *tl; 1912 register caddr_t cp; 1913 register long t1, t2; 1914 caddr_t bpos, dpos, cp2; 1915 u_long xid; 1916 int error = 0, isnq; 1917 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1918 long len; 1919 1920 isnq = (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS); 1921 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 1922 len = sp->s_namlen; 1923 nfsm_reqhead(vp, NFSPROC_LOOKUP, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 1924 if (isnq) { 1925 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 1926 *tl = 0; 1927 } 1928 nfsm_fhtom(vp); 1929 nfsm_strtom(sp->s_name, len, NFS_MAXNAMLEN); 1930 nfsm_request(vp, NFSPROC_LOOKUP, procp, sp->s_cred); 1931 if (fhp != NULL) { 1932 if (isnq) 1933 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1934 nfsm_dissect(cp, caddr_t, NFSX_FH); 1935 bcopy(cp, (caddr_t)fhp, NFSX_FH); 1936 } 1937 nfsm_reqdone; 1938 return (error); 1939 } 1940 1941 /* 1942 * Kludge City.. 1943 * - make nfs_bmap() essentially a no-op that does no translation 1944 * - do nfs_strategy() by faking physical I/O with nfs_readrpc/nfs_writerpc 1945 * after mapping the physical addresses into Kernel Virtual space in the 1946 * nfsiobuf area. 1947 * (Maybe I could use the process's page mapping, but I was concerned that 1948 * Kernel Write might not be enabled and also figured copyout() would do 1949 * a lot more work than bcopy() and also it currently happens in the 1950 * context of the swapper process (2). 1951 */ 1952 int 1953 nfs_bmap(ap) 1954 struct vop_bmap_args /* { 1955 struct vnode *a_vp; 1956 daddr_t a_bn; 1957 struct vnode **a_vpp; 1958 daddr_t *a_bnp; 1959 int *a_runp; 1960 } */ *ap; 1961 { 1962 register struct vnode *vp = ap->a_vp; 1963 1964 if (ap->a_vpp != NULL) 1965 *ap->a_vpp = vp; 1966 if (ap->a_bnp != NULL) 1967 *ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize); 1968 return (0); 1969 } 1970 1971 /* 1972 * Strategy routine. 1973 * For async requests when nfsiod(s) are running, queue the request by 1974 * calling nfs_asyncio(), otherwise just all nfs_doio() to do the 1975 * request. 1976 */ 1977 int 1978 nfs_strategy(ap) 1979 struct vop_strategy_args *ap; 1980 { 1981 register struct buf *bp = ap->a_bp; 1982 struct ucred *cr; 1983 struct proc *p; 1984 int error = 0; 1985 1986 if (bp->b_flags & B_PHYS) 1987 panic("nfs physio"); 1988 if (bp->b_flags & B_ASYNC) 1989 p = (struct proc *)0; 1990 else 1991 p = curproc; /* XXX */ 1992 if (bp->b_flags & B_READ) 1993 cr = bp->b_rcred; 1994 else 1995 cr = bp->b_wcred; 1996 /* 1997 * If the op is asynchronous and an i/o daemon is waiting 1998 * queue the request, wake it up and wait for completion 1999 * otherwise just do it ourselves. 2000 */ 2001 if ((bp->b_flags & B_ASYNC) == 0 || 2002 nfs_asyncio(bp, NOCRED)) 2003 error = nfs_doio(bp, cr, p); 2004 return (error); 2005 } 2006 2007 /* 2008 * Mmap a file 2009 * 2010 * NB Currently unsupported. 2011 */ 2012 /* ARGSUSED */ 2013 int 2014 nfs_mmap(ap) 2015 struct vop_mmap_args /* { 2016 struct vnode *a_vp; 2017 int a_fflags; 2018 struct ucred *a_cred; 2019 struct proc *a_p; 2020 } */ *ap; 2021 { 2022 2023 return (EINVAL); 2024 } 2025 2026 /* 2027 * Flush all the blocks associated with a vnode. 2028 * Walk through the buffer pool and push any dirty pages 2029 * associated with the vnode. 2030 */ 2031 /* ARGSUSED */ 2032 int 2033 nfs_fsync(ap) 2034 struct vop_fsync_args /* { 2035 struct vnodeop_desc *a_desc; 2036 struct vnode * a_vp; 2037 struct ucred * a_cred; 2038 int a_waitfor; 2039 struct proc * a_p; 2040 } */ *ap; 2041 { 2042 register struct vnode *vp = ap->a_vp; 2043 register struct nfsnode *np = VTONFS(vp); 2044 register struct buf *bp; 2045 struct buf *nbp; 2046 struct nfsmount *nmp; 2047 int s, error = 0, slptimeo = 0, slpflag = 0; 2048 2049 nmp = VFSTONFS(vp->v_mount); 2050 if (nmp->nm_flag & NFSMNT_INT) 2051 slpflag = PCATCH; 2052 loop: 2053 s = splbio(); 2054 for (bp = vp->v_dirtyblkhd.le_next; bp; bp = nbp) { 2055 nbp = bp->b_vnbufs.qe_next; 2056 if (bp->b_flags & B_BUSY) { 2057 if (ap->a_waitfor != MNT_WAIT) 2058 continue; 2059 bp->b_flags |= B_WANTED; 2060 error = tsleep((caddr_t)bp, slpflag | (PRIBIO + 1), 2061 "nfsfsync", slptimeo); 2062 splx(s); 2063 if (error) { 2064 if (nfs_sigintr(nmp, (struct nfsreq *)0, ap->a_p)) 2065 return (EINTR); 2066 if (slpflag == PCATCH) { 2067 slpflag = 0; 2068 slptimeo = 2 * hz; 2069 } 2070 } 2071 goto loop; 2072 } 2073 if ((bp->b_flags & B_DELWRI) == 0) 2074 panic("nfs_fsync: not dirty"); 2075 bremfree(bp); 2076 bp->b_flags |= B_BUSY; 2077 splx(s); 2078 bp->b_flags |= B_ASYNC; 2079 VOP_BWRITE(bp); 2080 goto loop; 2081 } 2082 splx(s); 2083 if (ap->a_waitfor == MNT_WAIT) { 2084 while (vp->v_numoutput) { 2085 vp->v_flag |= VBWAIT; 2086 error = tsleep((caddr_t)&vp->v_numoutput, 2087 slpflag | (PRIBIO + 1), "nfsfsync", slptimeo); 2088 if (error) { 2089 if (nfs_sigintr(nmp, (struct nfsreq *)0, ap->a_p)) 2090 return (EINTR); 2091 if (slpflag == PCATCH) { 2092 slpflag = 0; 2093 slptimeo = 2 * hz; 2094 } 2095 } 2096 } 2097 if (vp->v_dirtyblkhd.le_next) { 2098 #ifdef DIAGNOSTIC 2099 vprint("nfs_fsync: dirty", vp); 2100 #endif 2101 goto loop; 2102 } 2103 } 2104 if (np->n_flag & NWRITEERR) { 2105 error = np->n_error; 2106 np->n_flag &= ~NWRITEERR; 2107 } 2108 return (error); 2109 } 2110 2111 /* 2112 * NFS advisory byte-level locks. 2113 * Currently unsupported. 2114 */ 2115 int 2116 nfs_advlock(ap) 2117 struct vop_advlock_args /* { 2118 struct vnode *a_vp; 2119 caddr_t a_id; 2120 int a_op; 2121 struct flock *a_fl; 2122 int a_flags; 2123 } */ *ap; 2124 { 2125 2126 return (EOPNOTSUPP); 2127 } 2128 2129 /* 2130 * Print out the contents of an nfsnode. 2131 */ 2132 int 2133 nfs_print(ap) 2134 struct vop_print_args /* { 2135 struct vnode *a_vp; 2136 } */ *ap; 2137 { 2138 register struct vnode *vp = ap->a_vp; 2139 register struct nfsnode *np = VTONFS(vp); 2140 2141 printf("tag VT_NFS, fileid %d fsid 0x%x", 2142 np->n_vattr.va_fileid, np->n_vattr.va_fsid); 2143 #ifdef FIFO 2144 if (vp->v_type == VFIFO) 2145 fifo_printinfo(vp); 2146 #endif /* FIFO */ 2147 printf("\n"); 2148 } 2149 2150 /* 2151 * NFS directory offset lookup. 2152 * Currently unsupported. 2153 */ 2154 int 2155 nfs_blkatoff(ap) 2156 struct vop_blkatoff_args /* { 2157 struct vnode *a_vp; 2158 off_t a_offset; 2159 char **a_res; 2160 struct buf **a_bpp; 2161 } */ *ap; 2162 { 2163 2164 return (EOPNOTSUPP); 2165 } 2166 2167 /* 2168 * NFS flat namespace allocation. 2169 * Currently unsupported. 2170 */ 2171 int 2172 nfs_valloc(ap) 2173 struct vop_valloc_args /* { 2174 struct vnode *a_pvp; 2175 int a_mode; 2176 struct ucred *a_cred; 2177 struct vnode **a_vpp; 2178 } */ *ap; 2179 { 2180 2181 return (EOPNOTSUPP); 2182 } 2183 2184 /* 2185 * NFS flat namespace free. 2186 * Currently unsupported. 2187 */ 2188 int 2189 nfs_vfree(ap) 2190 struct vop_vfree_args /* { 2191 struct vnode *a_pvp; 2192 ino_t a_ino; 2193 int a_mode; 2194 } */ *ap; 2195 { 2196 2197 return (EOPNOTSUPP); 2198 } 2199 2200 /* 2201 * NFS file truncation. 2202 */ 2203 int 2204 nfs_truncate(ap) 2205 struct vop_truncate_args /* { 2206 struct vnode *a_vp; 2207 off_t a_length; 2208 int a_flags; 2209 struct ucred *a_cred; 2210 struct proc *a_p; 2211 } */ *ap; 2212 { 2213 2214 /* Use nfs_setattr */ 2215 printf("nfs_truncate: need to implement!!"); 2216 return (EOPNOTSUPP); 2217 } 2218 2219 /* 2220 * NFS update. 2221 */ 2222 int 2223 nfs_update(ap) 2224 struct vop_update_args /* { 2225 struct vnode *a_vp; 2226 struct timeval *a_ta; 2227 struct timeval *a_tm; 2228 int a_waitfor; 2229 } */ *ap; 2230 { 2231 2232 /* Use nfs_setattr */ 2233 printf("nfs_update: need to implement!!"); 2234 return (EOPNOTSUPP); 2235 } 2236 2237 /* 2238 * nfs special file access vnode op. 2239 * Essentially just get vattr and then imitate iaccess() since the device is 2240 * local to the client. 2241 */ 2242 int 2243 nfsspec_access(ap) 2244 struct vop_access_args /* { 2245 struct vnode *a_vp; 2246 int a_mode; 2247 struct ucred *a_cred; 2248 struct proc *a_p; 2249 } */ *ap; 2250 { 2251 register struct vattr *vap; 2252 register gid_t *gp; 2253 register struct ucred *cred = ap->a_cred; 2254 mode_t mode = ap->a_mode; 2255 struct vattr vattr; 2256 register int i; 2257 int error; 2258 2259 /* 2260 * If you're the super-user, 2261 * you always get access. 2262 */ 2263 if (cred->cr_uid == 0) 2264 return (0); 2265 vap = &vattr; 2266 if (error = VOP_GETATTR(ap->a_vp, vap, cred, ap->a_p)) 2267 return (error); 2268 /* 2269 * Access check is based on only one of owner, group, public. 2270 * If not owner, then check group. If not a member of the 2271 * group, then check public access. 2272 */ 2273 if (cred->cr_uid != vap->va_uid) { 2274 mode >>= 3; 2275 gp = cred->cr_groups; 2276 for (i = 0; i < cred->cr_ngroups; i++, gp++) 2277 if (vap->va_gid == *gp) 2278 goto found; 2279 mode >>= 3; 2280 found: 2281 ; 2282 } 2283 return ((vap->va_mode & mode) == mode ? 0 : EACCES); 2284 } 2285 2286 /* 2287 * Read wrapper for special devices. 2288 */ 2289 int 2290 nfsspec_read(ap) 2291 struct vop_read_args /* { 2292 struct vnode *a_vp; 2293 struct uio *a_uio; 2294 int a_ioflag; 2295 struct ucred *a_cred; 2296 } */ *ap; 2297 { 2298 register struct nfsnode *np = VTONFS(ap->a_vp); 2299 2300 /* 2301 * Set access flag. 2302 */ 2303 np->n_flag |= NACC; 2304 np->n_atim = time; 2305 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_read), ap)); 2306 } 2307 2308 /* 2309 * Write wrapper for special devices. 2310 */ 2311 int 2312 nfsspec_write(ap) 2313 struct vop_write_args /* { 2314 struct vnode *a_vp; 2315 struct uio *a_uio; 2316 int a_ioflag; 2317 struct ucred *a_cred; 2318 } */ *ap; 2319 { 2320 register struct nfsnode *np = VTONFS(ap->a_vp); 2321 2322 /* 2323 * Set update flag. 2324 */ 2325 np->n_flag |= NUPD; 2326 np->n_mtim = time; 2327 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_write), ap)); 2328 } 2329 2330 /* 2331 * Close wrapper for special devices. 2332 * 2333 * Update the times on the nfsnode then do device close. 2334 */ 2335 int 2336 nfsspec_close(ap) 2337 struct vop_close_args /* { 2338 struct vnode *a_vp; 2339 int a_fflag; 2340 struct ucred *a_cred; 2341 struct proc *a_p; 2342 } */ *ap; 2343 { 2344 register struct vnode *vp = ap->a_vp; 2345 register struct nfsnode *np = VTONFS(vp); 2346 struct vattr vattr; 2347 2348 if (np->n_flag & (NACC | NUPD)) { 2349 np->n_flag |= NCHG; 2350 if (vp->v_usecount == 1 && 2351 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 2352 VATTR_NULL(&vattr); 2353 if (np->n_flag & NACC) { 2354 vattr.va_atime.ts_sec = np->n_atim.tv_sec; 2355 vattr.va_atime.ts_nsec = 2356 np->n_atim.tv_usec * 1000; 2357 } 2358 if (np->n_flag & NUPD) { 2359 vattr.va_mtime.ts_sec = np->n_mtim.tv_sec; 2360 vattr.va_mtime.ts_nsec = 2361 np->n_mtim.tv_usec * 1000; 2362 } 2363 (void)VOP_SETATTR(vp, &vattr, ap->a_cred, ap->a_p); 2364 } 2365 } 2366 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_close), ap)); 2367 } 2368 2369 #ifdef FIFO 2370 /* 2371 * Read wrapper for fifos. 2372 */ 2373 int 2374 nfsfifo_read(ap) 2375 struct vop_read_args /* { 2376 struct vnode *a_vp; 2377 struct uio *a_uio; 2378 int a_ioflag; 2379 struct ucred *a_cred; 2380 } */ *ap; 2381 { 2382 extern int (**fifo_vnodeop_p)(); 2383 register struct nfsnode *np = VTONFS(ap->a_vp); 2384 2385 /* 2386 * Set access flag. 2387 */ 2388 np->n_flag |= NACC; 2389 np->n_atim = time; 2390 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), ap)); 2391 } 2392 2393 /* 2394 * Write wrapper for fifos. 2395 */ 2396 int 2397 nfsfifo_write(ap) 2398 struct vop_write_args /* { 2399 struct vnode *a_vp; 2400 struct uio *a_uio; 2401 int a_ioflag; 2402 struct ucred *a_cred; 2403 } */ *ap; 2404 { 2405 extern int (**fifo_vnodeop_p)(); 2406 register struct nfsnode *np = VTONFS(ap->a_vp); 2407 2408 /* 2409 * Set update flag. 2410 */ 2411 np->n_flag |= NUPD; 2412 np->n_mtim = time; 2413 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), ap)); 2414 } 2415 2416 /* 2417 * Close wrapper for fifos. 2418 * 2419 * Update the times on the nfsnode then do fifo close. 2420 */ 2421 int 2422 nfsfifo_close(ap) 2423 struct vop_close_args /* { 2424 struct vnode *a_vp; 2425 int a_fflag; 2426 struct ucred *a_cred; 2427 struct proc *a_p; 2428 } */ *ap; 2429 { 2430 register struct vnode *vp = ap->a_vp; 2431 register struct nfsnode *np = VTONFS(vp); 2432 struct vattr vattr; 2433 extern int (**fifo_vnodeop_p)(); 2434 2435 if (np->n_flag & (NACC | NUPD)) { 2436 if (np->n_flag & NACC) 2437 np->n_atim = time; 2438 if (np->n_flag & NUPD) 2439 np->n_mtim = time; 2440 np->n_flag |= NCHG; 2441 if (vp->v_usecount == 1 && 2442 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 2443 VATTR_NULL(&vattr); 2444 if (np->n_flag & NACC) { 2445 vattr.va_atime.ts_sec = np->n_atim.tv_sec; 2446 vattr.va_atime.ts_nsec = 2447 np->n_atim.tv_usec * 1000; 2448 } 2449 if (np->n_flag & NUPD) { 2450 vattr.va_mtime.ts_sec = np->n_mtim.tv_sec; 2451 vattr.va_mtime.ts_nsec = 2452 np->n_mtim.tv_usec * 1000; 2453 } 2454 (void)VOP_SETATTR(vp, &vattr, ap->a_cred, ap->a_p); 2455 } 2456 } 2457 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_close), ap)); 2458 } 2459 #endif /* FIFO */ 2460