nfs_vnops.c revision 1.186.2.6.2.5
1 /* $NetBSD: nfs_vnops.c,v 1.186.2.6.2.5 2005/10/27 05:17:56 riz Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Macklem at The University of Guelph. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)nfs_vnops.c 8.19 (Berkeley) 7/31/95 35 */ 36 37 /* 38 * vnode op calls for Sun NFS version 2 and 3 39 */ 40 41 #include <sys/cdefs.h> 42 __KERNEL_RCSID(0, "$NetBSD: nfs_vnops.c,v 1.186.2.6.2.5 2005/10/27 05:17:56 riz Exp $"); 43 44 #include "opt_nfs.h" 45 #include "opt_uvmhist.h" 46 47 #include <sys/param.h> 48 #include <sys/proc.h> 49 #include <sys/kernel.h> 50 #include <sys/systm.h> 51 #include <sys/resourcevar.h> 52 #include <sys/proc.h> 53 #include <sys/mount.h> 54 #include <sys/buf.h> 55 #include <sys/malloc.h> 56 #include <sys/mbuf.h> 57 #include <sys/namei.h> 58 #include <sys/vnode.h> 59 #include <sys/dirent.h> 60 #include <sys/fcntl.h> 61 #include <sys/hash.h> 62 #include <sys/lockf.h> 63 #include <sys/stat.h> 64 #include <sys/unistd.h> 65 66 #include <uvm/uvm_extern.h> 67 #include <uvm/uvm.h> 68 69 #include <miscfs/fifofs/fifo.h> 70 #include <miscfs/genfs/genfs.h> 71 #include <miscfs/specfs/specdev.h> 72 73 #include <nfs/rpcv2.h> 74 #include <nfs/nfsproto.h> 75 #include <nfs/nfs.h> 76 #include <nfs/nfsnode.h> 77 #include <nfs/nfsmount.h> 78 #include <nfs/xdr_subs.h> 79 #include <nfs/nfsm_subs.h> 80 #include <nfs/nqnfs.h> 81 #include <nfs/nfs_var.h> 82 83 #include <net/if.h> 84 #include <netinet/in.h> 85 #include <netinet/in_var.h> 86 87 /* 88 * Global vfs data structures for nfs 89 */ 90 int (**nfsv2_vnodeop_p) __P((void *)); 91 const struct vnodeopv_entry_desc nfsv2_vnodeop_entries[] = { 92 { &vop_default_desc, vn_default_error }, 93 { &vop_lookup_desc, nfs_lookup }, /* lookup */ 94 { &vop_create_desc, nfs_create }, /* create */ 95 { &vop_mknod_desc, nfs_mknod }, /* mknod */ 96 { &vop_open_desc, nfs_open }, /* open */ 97 { &vop_close_desc, nfs_close }, /* close */ 98 { &vop_access_desc, nfs_access }, /* access */ 99 { &vop_getattr_desc, nfs_getattr }, /* getattr */ 100 { &vop_setattr_desc, nfs_setattr }, /* setattr */ 101 { &vop_read_desc, nfs_read }, /* read */ 102 { &vop_write_desc, nfs_write }, /* write */ 103 { &vop_lease_desc, nfs_lease_check }, /* lease */ 104 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 105 { &vop_ioctl_desc, nfs_ioctl }, /* ioctl */ 106 { &vop_poll_desc, nfs_poll }, /* poll */ 107 { &vop_kqfilter_desc, nfs_kqfilter }, /* kqfilter */ 108 { &vop_revoke_desc, nfs_revoke }, /* revoke */ 109 { &vop_mmap_desc, nfs_mmap }, /* mmap */ 110 { &vop_fsync_desc, nfs_fsync }, /* fsync */ 111 { &vop_seek_desc, nfs_seek }, /* seek */ 112 { &vop_remove_desc, nfs_remove }, /* remove */ 113 { &vop_link_desc, nfs_link }, /* link */ 114 { &vop_rename_desc, nfs_rename }, /* rename */ 115 { &vop_mkdir_desc, nfs_mkdir }, /* mkdir */ 116 { &vop_rmdir_desc, nfs_rmdir }, /* rmdir */ 117 { &vop_symlink_desc, nfs_symlink }, /* symlink */ 118 { &vop_readdir_desc, nfs_readdir }, /* readdir */ 119 { &vop_readlink_desc, nfs_readlink }, /* readlink */ 120 { &vop_abortop_desc, nfs_abortop }, /* abortop */ 121 { &vop_inactive_desc, nfs_inactive }, /* inactive */ 122 { &vop_reclaim_desc, nfs_reclaim }, /* reclaim */ 123 { &vop_lock_desc, nfs_lock }, /* lock */ 124 { &vop_unlock_desc, nfs_unlock }, /* unlock */ 125 { &vop_bmap_desc, nfs_bmap }, /* bmap */ 126 { &vop_strategy_desc, nfs_strategy }, /* strategy */ 127 { &vop_print_desc, nfs_print }, /* print */ 128 { &vop_islocked_desc, nfs_islocked }, /* islocked */ 129 { &vop_pathconf_desc, nfs_pathconf }, /* pathconf */ 130 { &vop_advlock_desc, nfs_advlock }, /* advlock */ 131 { &vop_blkatoff_desc, nfs_blkatoff }, /* blkatoff */ 132 { &vop_valloc_desc, nfs_valloc }, /* valloc */ 133 { &vop_reallocblks_desc, nfs_reallocblks }, /* reallocblks */ 134 { &vop_vfree_desc, nfs_vfree }, /* vfree */ 135 { &vop_truncate_desc, nfs_truncate }, /* truncate */ 136 { &vop_update_desc, nfs_update }, /* update */ 137 { &vop_bwrite_desc, nfs_bwrite }, /* bwrite */ 138 { &vop_getpages_desc, nfs_getpages }, /* getpages */ 139 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 140 { NULL, NULL } 141 }; 142 const struct vnodeopv_desc nfsv2_vnodeop_opv_desc = 143 { &nfsv2_vnodeop_p, nfsv2_vnodeop_entries }; 144 145 /* 146 * Special device vnode ops 147 */ 148 int (**spec_nfsv2nodeop_p) __P((void *)); 149 const struct vnodeopv_entry_desc spec_nfsv2nodeop_entries[] = { 150 { &vop_default_desc, vn_default_error }, 151 { &vop_lookup_desc, spec_lookup }, /* lookup */ 152 { &vop_create_desc, spec_create }, /* create */ 153 { &vop_mknod_desc, spec_mknod }, /* mknod */ 154 { &vop_open_desc, spec_open }, /* open */ 155 { &vop_close_desc, nfsspec_close }, /* close */ 156 { &vop_access_desc, nfsspec_access }, /* access */ 157 { &vop_getattr_desc, nfs_getattr }, /* getattr */ 158 { &vop_setattr_desc, nfs_setattr }, /* setattr */ 159 { &vop_read_desc, nfsspec_read }, /* read */ 160 { &vop_write_desc, nfsspec_write }, /* write */ 161 { &vop_lease_desc, spec_lease_check }, /* lease */ 162 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 163 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 164 { &vop_poll_desc, spec_poll }, /* poll */ 165 { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ 166 { &vop_revoke_desc, spec_revoke }, /* revoke */ 167 { &vop_mmap_desc, spec_mmap }, /* mmap */ 168 { &vop_fsync_desc, spec_fsync }, /* fsync */ 169 { &vop_seek_desc, spec_seek }, /* seek */ 170 { &vop_remove_desc, spec_remove }, /* remove */ 171 { &vop_link_desc, spec_link }, /* link */ 172 { &vop_rename_desc, spec_rename }, /* rename */ 173 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 174 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 175 { &vop_symlink_desc, spec_symlink }, /* symlink */ 176 { &vop_readdir_desc, spec_readdir }, /* readdir */ 177 { &vop_readlink_desc, spec_readlink }, /* readlink */ 178 { &vop_abortop_desc, spec_abortop }, /* abortop */ 179 { &vop_inactive_desc, nfs_inactive }, /* inactive */ 180 { &vop_reclaim_desc, nfs_reclaim }, /* reclaim */ 181 { &vop_lock_desc, nfs_lock }, /* lock */ 182 { &vop_unlock_desc, nfs_unlock }, /* unlock */ 183 { &vop_bmap_desc, spec_bmap }, /* bmap */ 184 { &vop_strategy_desc, spec_strategy }, /* strategy */ 185 { &vop_print_desc, nfs_print }, /* print */ 186 { &vop_islocked_desc, nfs_islocked }, /* islocked */ 187 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 188 { &vop_advlock_desc, spec_advlock }, /* advlock */ 189 { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ 190 { &vop_valloc_desc, spec_valloc }, /* valloc */ 191 { &vop_reallocblks_desc, spec_reallocblks }, /* reallocblks */ 192 { &vop_vfree_desc, spec_vfree }, /* vfree */ 193 { &vop_truncate_desc, spec_truncate }, /* truncate */ 194 { &vop_update_desc, nfs_update }, /* update */ 195 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 196 { &vop_getpages_desc, spec_getpages }, /* getpages */ 197 { &vop_putpages_desc, spec_putpages }, /* putpages */ 198 { NULL, NULL } 199 }; 200 const struct vnodeopv_desc spec_nfsv2nodeop_opv_desc = 201 { &spec_nfsv2nodeop_p, spec_nfsv2nodeop_entries }; 202 203 int (**fifo_nfsv2nodeop_p) __P((void *)); 204 const struct vnodeopv_entry_desc fifo_nfsv2nodeop_entries[] = { 205 { &vop_default_desc, vn_default_error }, 206 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 207 { &vop_create_desc, fifo_create }, /* create */ 208 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 209 { &vop_open_desc, fifo_open }, /* open */ 210 { &vop_close_desc, nfsfifo_close }, /* close */ 211 { &vop_access_desc, nfsspec_access }, /* access */ 212 { &vop_getattr_desc, nfs_getattr }, /* getattr */ 213 { &vop_setattr_desc, nfs_setattr }, /* setattr */ 214 { &vop_read_desc, nfsfifo_read }, /* read */ 215 { &vop_write_desc, nfsfifo_write }, /* write */ 216 { &vop_lease_desc, fifo_lease_check }, /* lease */ 217 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 218 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 219 { &vop_poll_desc, fifo_poll }, /* poll */ 220 { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */ 221 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 222 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 223 { &vop_fsync_desc, nfs_fsync }, /* fsync */ 224 { &vop_seek_desc, fifo_seek }, /* seek */ 225 { &vop_remove_desc, fifo_remove }, /* remove */ 226 { &vop_link_desc, fifo_link }, /* link */ 227 { &vop_rename_desc, fifo_rename }, /* rename */ 228 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 229 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 230 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 231 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 232 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 233 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 234 { &vop_inactive_desc, nfs_inactive }, /* inactive */ 235 { &vop_reclaim_desc, nfs_reclaim }, /* reclaim */ 236 { &vop_lock_desc, nfs_lock }, /* lock */ 237 { &vop_unlock_desc, nfs_unlock }, /* unlock */ 238 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 239 { &vop_strategy_desc, genfs_badop }, /* strategy */ 240 { &vop_print_desc, nfs_print }, /* print */ 241 { &vop_islocked_desc, nfs_islocked }, /* islocked */ 242 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 243 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 244 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 245 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 246 { &vop_reallocblks_desc, fifo_reallocblks }, /* reallocblks */ 247 { &vop_vfree_desc, fifo_vfree }, /* vfree */ 248 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 249 { &vop_update_desc, nfs_update }, /* update */ 250 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 251 { &vop_putpages_desc, fifo_putpages }, /* putpages */ 252 { NULL, NULL } 253 }; 254 const struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc = 255 { &fifo_nfsv2nodeop_p, fifo_nfsv2nodeop_entries }; 256 257 static void nfs_writerpc_extfree(struct mbuf *, caddr_t, size_t, void *); 258 259 /* 260 * Global variables 261 */ 262 extern u_int32_t nfs_true, nfs_false; 263 extern u_int32_t nfs_xdrneg1; 264 extern const nfstype nfsv3_type[9]; 265 266 int nfs_numasync = 0; 267 #define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1)) 268 269 static void nfs_cache_enter(struct vnode *, struct vnode *, 270 struct componentname *); 271 272 static void 273 nfs_cache_enter(struct vnode *dvp, struct vnode *vp, 274 struct componentname *cnp) 275 { 276 struct nfsnode *dnp = VTONFS(dvp); 277 278 if (vp != NULL) { 279 struct nfsnode *np = VTONFS(vp); 280 281 np->n_ctime = np->n_vattr->va_ctime.tv_sec; 282 } 283 284 if (!timespecisset(&dnp->n_nctime)) 285 dnp->n_nctime = dnp->n_vattr->va_mtime; 286 287 cache_enter(dvp, vp, cnp); 288 } 289 290 /* 291 * nfs null call from vfs. 292 */ 293 int 294 nfs_null(vp, cred, procp) 295 struct vnode *vp; 296 struct ucred *cred; 297 struct proc *procp; 298 { 299 caddr_t bpos, dpos; 300 int error = 0; 301 struct mbuf *mreq, *mrep, *md, *mb; 302 struct nfsnode *np = VTONFS(vp); 303 304 nfsm_reqhead(np, NFSPROC_NULL, 0); 305 nfsm_request(np, NFSPROC_NULL, procp, cred); 306 nfsm_reqdone; 307 return (error); 308 } 309 310 /* 311 * nfs access vnode op. 312 * For nfs version 2, just return ok. File accesses may fail later. 313 * For nfs version 3, use the access rpc to check accessibility. If file modes 314 * are changed on the server, accesses might still fail later. 315 */ 316 int 317 nfs_access(v) 318 void *v; 319 { 320 struct vop_access_args /* { 321 struct vnode *a_vp; 322 int a_mode; 323 struct ucred *a_cred; 324 struct proc *a_p; 325 } */ *ap = v; 326 struct vnode *vp = ap->a_vp; 327 u_int32_t *tl; 328 caddr_t cp; 329 int32_t t1, t2; 330 caddr_t bpos, dpos, cp2; 331 int error = 0, attrflag, cachevalid; 332 struct mbuf *mreq, *mrep, *md, *mb; 333 u_int32_t mode, rmode; 334 const int v3 = NFS_ISV3(vp); 335 struct nfsnode *np = VTONFS(vp); 336 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 337 338 cachevalid = (np->n_accstamp != -1 && 339 (time.tv_sec - np->n_accstamp) < NFS_ATTRTIMEO(nmp, np) && 340 np->n_accuid == ap->a_cred->cr_uid); 341 342 /* 343 * Check access cache first. If this request has been made for this 344 * uid shortly before, use the cached result. 345 */ 346 if (cachevalid) { 347 if (!np->n_accerror) { 348 if ((np->n_accmode & ap->a_mode) == ap->a_mode) 349 return np->n_accerror; 350 } else if ((np->n_accmode & ap->a_mode) == np->n_accmode) 351 return np->n_accerror; 352 } 353 354 /* 355 * For nfs v3, do an access rpc, otherwise you are stuck emulating 356 * ufs_access() locally using the vattr. This may not be correct, 357 * since the server may apply other access criteria such as 358 * client uid-->server uid mapping that we do not know about, but 359 * this is better than just returning anything that is lying about 360 * in the cache. 361 */ 362 if (v3) { 363 nfsstats.rpccnt[NFSPROC_ACCESS]++; 364 nfsm_reqhead(np, NFSPROC_ACCESS, NFSX_FH(v3) + NFSX_UNSIGNED); 365 nfsm_fhtom(np, v3); 366 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 367 if (ap->a_mode & VREAD) 368 mode = NFSV3ACCESS_READ; 369 else 370 mode = 0; 371 if (vp->v_type != VDIR) { 372 if (ap->a_mode & VWRITE) 373 mode |= (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND); 374 if (ap->a_mode & VEXEC) 375 mode |= NFSV3ACCESS_EXECUTE; 376 } else { 377 if (ap->a_mode & VWRITE) 378 mode |= (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND | 379 NFSV3ACCESS_DELETE); 380 if (ap->a_mode & VEXEC) 381 mode |= NFSV3ACCESS_LOOKUP; 382 } 383 *tl = txdr_unsigned(mode); 384 nfsm_request(np, NFSPROC_ACCESS, ap->a_p, ap->a_cred); 385 nfsm_postop_attr(vp, attrflag, 0); 386 if (!error) { 387 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); 388 rmode = fxdr_unsigned(u_int32_t, *tl); 389 /* 390 * The NFS V3 spec does not clarify whether or not 391 * the returned access bits can be a superset of 392 * the ones requested, so... 393 */ 394 if ((rmode & mode) != mode) 395 error = EACCES; 396 } 397 nfsm_reqdone; 398 } else 399 return (nfsspec_access(ap)); 400 /* 401 * Disallow write attempts on filesystems mounted read-only; 402 * unless the file is a socket, fifo, or a block or character 403 * device resident on the filesystem. 404 */ 405 if (!error && (ap->a_mode & VWRITE) && 406 (vp->v_mount->mnt_flag & MNT_RDONLY)) { 407 switch (vp->v_type) { 408 case VREG: 409 case VDIR: 410 case VLNK: 411 error = EROFS; 412 default: 413 break; 414 } 415 } 416 417 if (!error || error == EACCES) { 418 /* 419 * If we got the same result as for a previous, 420 * different request, OR it in. Don't update 421 * the timestamp in that case. 422 */ 423 if (cachevalid && np->n_accstamp != -1 && 424 error == np->n_accerror) { 425 if (!error) 426 np->n_accmode |= ap->a_mode; 427 else if ((np->n_accmode & ap->a_mode) == ap->a_mode) 428 np->n_accmode = ap->a_mode; 429 } else { 430 np->n_accstamp = time.tv_sec; 431 np->n_accuid = ap->a_cred->cr_uid; 432 np->n_accmode = ap->a_mode; 433 np->n_accerror = error; 434 } 435 } 436 437 return (error); 438 } 439 440 /* 441 * nfs open vnode op 442 * Check to see if the type is ok 443 * and that deletion is not in progress. 444 * For paged in text files, you will need to flush the page cache 445 * if consistency is lost. 446 */ 447 /* ARGSUSED */ 448 int 449 nfs_open(v) 450 void *v; 451 { 452 struct vop_open_args /* { 453 struct vnode *a_vp; 454 int a_mode; 455 struct ucred *a_cred; 456 struct proc *a_p; 457 } */ *ap = v; 458 struct vnode *vp = ap->a_vp; 459 struct nfsnode *np = VTONFS(vp); 460 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 461 struct vattr vattr; 462 int error; 463 464 if (vp->v_type != VREG && vp->v_type != VDIR && vp->v_type != VLNK) { 465 return (EACCES); 466 } 467 468 if (ap->a_mode & FREAD) { 469 if (np->n_rcred != NULL) 470 crfree(np->n_rcred); 471 np->n_rcred = ap->a_cred; 472 crhold(np->n_rcred); 473 } 474 if (ap->a_mode & FWRITE) { 475 if (np->n_wcred != NULL) 476 crfree(np->n_wcred); 477 np->n_wcred = ap->a_cred; 478 crhold(np->n_wcred); 479 } 480 481 #ifndef NFS_V2_ONLY 482 /* 483 * Get a valid lease. If cached data is stale, flush it. 484 */ 485 if (nmp->nm_flag & NFSMNT_NQNFS) { 486 if (NQNFS_CKINVALID(vp, np, ND_READ)) { 487 do { 488 error = nqnfs_getlease(vp, ND_READ, ap->a_cred, 489 ap->a_p); 490 } while (error == NQNFS_EXPIRED); 491 if (error) 492 return (error); 493 if (np->n_lrev != np->n_brev || 494 (np->n_flag & NQNFSNONCACHE)) { 495 if ((error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, 496 ap->a_p, 1)) == EINTR) 497 return (error); 498 np->n_brev = np->n_lrev; 499 } 500 } 501 } else 502 #endif 503 { 504 if (np->n_flag & NMODIFIED) { 505 if ((error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, 506 ap->a_p, 1)) == EINTR) 507 return (error); 508 NFS_INVALIDATE_ATTRCACHE(np); 509 if (vp->v_type == VDIR) { 510 nfs_invaldircache(vp, 0); 511 np->n_direofoffset = 0; 512 } 513 error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p); 514 if (error) 515 return (error); 516 np->n_mtime = vattr.va_mtime; 517 } else { 518 error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p); 519 if (error) 520 return (error); 521 if (timespeccmp(&np->n_mtime, &vattr.va_mtime, !=)) { 522 if (vp->v_type == VDIR) { 523 nfs_invaldircache(vp, 0); 524 np->n_direofoffset = 0; 525 } 526 if ((error = nfs_vinvalbuf(vp, V_SAVE, 527 ap->a_cred, ap->a_p, 1)) == EINTR) 528 return (error); 529 np->n_mtime = vattr.va_mtime; 530 } 531 } 532 } 533 if ((nmp->nm_flag & NFSMNT_NQNFS) == 0) 534 NFS_INVALIDATE_ATTRCACHE(np); /* For Open/Close consistency */ 535 return (0); 536 } 537 538 /* 539 * nfs close vnode op 540 * What an NFS client should do upon close after writing is a debatable issue. 541 * Most NFS clients push delayed writes to the server upon close, basically for 542 * two reasons: 543 * 1 - So that any write errors may be reported back to the client process 544 * doing the close system call. By far the two most likely errors are 545 * NFSERR_NOSPC and NFSERR_DQUOT to indicate space allocation failure. 546 * 2 - To put a worst case upper bound on cache inconsistency between 547 * multiple clients for the file. 548 * There is also a consistency problem for Version 2 of the protocol w.r.t. 549 * not being able to tell if other clients are writing a file concurrently, 550 * since there is no way of knowing if the changed modify time in the reply 551 * is only due to the write for this client. 552 * (NFS Version 3 provides weak cache consistency data in the reply that 553 * should be sufficient to detect and handle this case.) 554 * 555 * The current code does the following: 556 * for NFS Version 2 - play it safe and flush/invalidate all dirty buffers 557 * for NFS Version 3 - flush dirty buffers to the server but don't invalidate 558 * or commit them (this satisfies 1 and 2 except for the 559 * case where the server crashes after this close but 560 * before the commit RPC, which is felt to be "good 561 * enough". Changing the last argument to nfs_flush() to 562 * a 1 would force a commit operation, if it is felt a 563 * commit is necessary now. 564 * for NQNFS - do nothing now, since 2 is dealt with via leases and 565 * 1 should be dealt with via an fsync() system call for 566 * cases where write errors are important. 567 */ 568 /* ARGSUSED */ 569 int 570 nfs_close(v) 571 void *v; 572 { 573 struct vop_close_args /* { 574 struct vnodeop_desc *a_desc; 575 struct vnode *a_vp; 576 int a_fflag; 577 struct ucred *a_cred; 578 struct proc *a_p; 579 } */ *ap = v; 580 struct vnode *vp = ap->a_vp; 581 struct nfsnode *np = VTONFS(vp); 582 int error = 0; 583 UVMHIST_FUNC("nfs_close"); UVMHIST_CALLED(ubchist); 584 585 if (vp->v_type == VREG) { 586 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) == 0 && 587 (np->n_flag & NMODIFIED)) { 588 if (NFS_ISV3(vp)) { 589 error = nfs_flush(vp, ap->a_cred, MNT_WAIT, ap->a_p, 0); 590 np->n_flag &= ~NMODIFIED; 591 } else 592 error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p, 1); 593 NFS_INVALIDATE_ATTRCACHE(np); 594 } 595 if (np->n_flag & NWRITEERR) { 596 np->n_flag &= ~NWRITEERR; 597 error = np->n_error; 598 } 599 } 600 UVMHIST_LOG(ubchist, "returning %d", error,0,0,0); 601 return (error); 602 } 603 604 /* 605 * nfs getattr call from vfs. 606 */ 607 int 608 nfs_getattr(v) 609 void *v; 610 { 611 struct vop_getattr_args /* { 612 struct vnode *a_vp; 613 struct vattr *a_vap; 614 struct ucred *a_cred; 615 struct proc *a_p; 616 } */ *ap = v; 617 struct vnode *vp = ap->a_vp; 618 struct nfsnode *np = VTONFS(vp); 619 caddr_t cp; 620 u_int32_t *tl; 621 int32_t t1, t2; 622 caddr_t bpos, dpos; 623 int error = 0; 624 struct mbuf *mreq, *mrep, *md, *mb; 625 const int v3 = NFS_ISV3(vp); 626 627 /* 628 * Update local times for special files. 629 */ 630 if (np->n_flag & (NACC | NUPD)) 631 np->n_flag |= NCHG; 632 633 /* 634 * if we have delayed truncation, do it now. 635 */ 636 nfs_delayedtruncate(vp); 637 638 /* 639 * First look in the cache. 640 */ 641 if (nfs_getattrcache(vp, ap->a_vap) == 0) 642 return (0); 643 nfsstats.rpccnt[NFSPROC_GETATTR]++; 644 nfsm_reqhead(np, NFSPROC_GETATTR, NFSX_FH(v3)); 645 nfsm_fhtom(np, v3); 646 nfsm_request(np, NFSPROC_GETATTR, ap->a_p, ap->a_cred); 647 if (!error) { 648 nfsm_loadattr(vp, ap->a_vap, 0); 649 if (vp->v_type == VDIR && 650 ap->a_vap->va_blocksize < NFS_DIRFRAGSIZ) 651 ap->a_vap->va_blocksize = NFS_DIRFRAGSIZ; 652 } 653 nfsm_reqdone; 654 return (error); 655 } 656 657 /* 658 * nfs setattr call. 659 */ 660 int 661 nfs_setattr(v) 662 void *v; 663 { 664 struct vop_setattr_args /* { 665 struct vnodeop_desc *a_desc; 666 struct vnode *a_vp; 667 struct vattr *a_vap; 668 struct ucred *a_cred; 669 struct proc *a_p; 670 } */ *ap = v; 671 struct vnode *vp = ap->a_vp; 672 struct nfsnode *np = VTONFS(vp); 673 struct vattr *vap = ap->a_vap; 674 int error = 0; 675 u_quad_t tsize = 0; 676 677 /* 678 * Setting of flags is not supported. 679 */ 680 if (vap->va_flags != VNOVAL) 681 return (EOPNOTSUPP); 682 683 /* 684 * Disallow write attempts if the filesystem is mounted read-only. 685 */ 686 if ((vap->va_uid != (uid_t)VNOVAL || 687 vap->va_gid != (gid_t)VNOVAL || vap->va_atime.tv_sec != VNOVAL || 688 vap->va_mtime.tv_sec != VNOVAL || vap->va_mode != (mode_t)VNOVAL) && 689 (vp->v_mount->mnt_flag & MNT_RDONLY)) 690 return (EROFS); 691 if (vap->va_size != VNOVAL) { 692 switch (vp->v_type) { 693 case VDIR: 694 return (EISDIR); 695 case VCHR: 696 case VBLK: 697 case VSOCK: 698 case VFIFO: 699 if (vap->va_mtime.tv_sec == VNOVAL && 700 vap->va_atime.tv_sec == VNOVAL && 701 vap->va_mode == (mode_t)VNOVAL && 702 vap->va_uid == (uid_t)VNOVAL && 703 vap->va_gid == (gid_t)VNOVAL) 704 return (0); 705 vap->va_size = VNOVAL; 706 break; 707 default: 708 /* 709 * Disallow write attempts if the filesystem is 710 * mounted read-only. 711 */ 712 if (vp->v_mount->mnt_flag & MNT_RDONLY) 713 return (EROFS); 714 uvm_vnp_setsize(vp, vap->va_size); 715 tsize = np->n_size; 716 np->n_size = vap->va_size; 717 if (vap->va_size == 0) 718 error = nfs_vinvalbuf(vp, 0, 719 ap->a_cred, ap->a_p, 1); 720 else 721 error = nfs_vinvalbuf(vp, V_SAVE, 722 ap->a_cred, ap->a_p, 1); 723 if (error) { 724 uvm_vnp_setsize(vp, tsize); 725 return (error); 726 } 727 np->n_vattr->va_size = vap->va_size; 728 } 729 } else if ((vap->va_mtime.tv_sec != VNOVAL || 730 vap->va_atime.tv_sec != VNOVAL) && 731 vp->v_type == VREG && 732 (error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, 733 ap->a_p, 1)) == EINTR) 734 return (error); 735 error = nfs_setattrrpc(vp, vap, ap->a_cred, ap->a_p); 736 if (error && vap->va_size != VNOVAL) { 737 np->n_size = np->n_vattr->va_size = tsize; 738 uvm_vnp_setsize(vp, np->n_size); 739 } 740 VN_KNOTE(vp, NOTE_ATTRIB); 741 return (error); 742 } 743 744 /* 745 * Do an nfs setattr rpc. 746 */ 747 int 748 nfs_setattrrpc(vp, vap, cred, procp) 749 struct vnode *vp; 750 struct vattr *vap; 751 struct ucred *cred; 752 struct proc *procp; 753 { 754 struct nfsv2_sattr *sp; 755 caddr_t cp; 756 int32_t t1, t2; 757 caddr_t bpos, dpos, cp2; 758 u_int32_t *tl; 759 int error = 0, wccflag = NFSV3_WCCRATTR; 760 struct mbuf *mreq, *mrep, *md, *mb; 761 const int v3 = NFS_ISV3(vp); 762 struct nfsnode *np = VTONFS(vp); 763 764 nfsstats.rpccnt[NFSPROC_SETATTR]++; 765 nfsm_reqhead(np, NFSPROC_SETATTR, NFSX_FH(v3) + NFSX_SATTR(v3)); 766 nfsm_fhtom(np, v3); 767 if (v3) { 768 nfsm_v3attrbuild(vap, TRUE); 769 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 770 *tl = nfs_false; 771 } else { 772 nfsm_build(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 773 if (vap->va_mode == (mode_t)VNOVAL) 774 sp->sa_mode = nfs_xdrneg1; 775 else 776 sp->sa_mode = vtonfsv2_mode(vp->v_type, vap->va_mode); 777 if (vap->va_uid == (uid_t)VNOVAL) 778 sp->sa_uid = nfs_xdrneg1; 779 else 780 sp->sa_uid = txdr_unsigned(vap->va_uid); 781 if (vap->va_gid == (gid_t)VNOVAL) 782 sp->sa_gid = nfs_xdrneg1; 783 else 784 sp->sa_gid = txdr_unsigned(vap->va_gid); 785 sp->sa_size = txdr_unsigned(vap->va_size); 786 txdr_nfsv2time(&vap->va_atime, &sp->sa_atime); 787 txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime); 788 } 789 nfsm_request(np, NFSPROC_SETATTR, procp, cred); 790 if (v3) { 791 nfsm_wcc_data(vp, wccflag, 0); 792 } else 793 nfsm_loadattr(vp, (struct vattr *)0, 0); 794 nfsm_reqdone; 795 return (error); 796 } 797 798 /* 799 * nfs lookup call, one step at a time... 800 * First look in cache 801 * If not found, unlock the directory nfsnode and do the rpc 802 * 803 * This code is full of lock/unlock statements and checks, because 804 * we continue after cache_lookup has finished (we need to check 805 * with the attr cache and do an rpc if it has timed out). This means 806 * that the locking effects of cache_lookup have to be taken into 807 * account. 808 */ 809 int 810 nfs_lookup(v) 811 void *v; 812 { 813 struct vop_lookup_args /* { 814 struct vnodeop_desc *a_desc; 815 struct vnode *a_dvp; 816 struct vnode **a_vpp; 817 struct componentname *a_cnp; 818 } */ *ap = v; 819 struct componentname *cnp = ap->a_cnp; 820 struct vnode *dvp = ap->a_dvp; 821 struct vnode **vpp = ap->a_vpp; 822 int flags; 823 struct vnode *newvp; 824 u_int32_t *tl; 825 caddr_t cp; 826 int32_t t1, t2; 827 caddr_t bpos, dpos, cp2; 828 struct mbuf *mreq, *mrep, *md, *mb; 829 long len; 830 nfsfh_t *fhp; 831 struct nfsnode *np; 832 int lockparent, wantparent, error = 0, attrflag, fhsize; 833 const int v3 = NFS_ISV3(dvp); 834 835 cnp->cn_flags &= ~PDIRUNLOCK; 836 flags = cnp->cn_flags; 837 838 *vpp = NULLVP; 839 newvp = NULLVP; 840 if ((flags & ISLASTCN) && (dvp->v_mount->mnt_flag & MNT_RDONLY) && 841 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 842 return (EROFS); 843 if (dvp->v_type != VDIR) 844 return (ENOTDIR); 845 846 lockparent = flags & LOCKPARENT; 847 wantparent = flags & (LOCKPARENT|WANTPARENT); 848 np = VTONFS(dvp); 849 850 /* 851 * Before tediously performing a linear scan of the directory, 852 * check the name cache to see if the directory/name pair 853 * we are looking for is known already. 854 * If the directory/name pair is found in the name cache, 855 * we have to ensure the directory has not changed from 856 * the time the cache entry has been created. If it has, 857 * the cache entry has to be ignored. 858 */ 859 if ((error = cache_lookup(dvp, vpp, cnp)) >= 0) { 860 struct vattr vattr; 861 int err2; 862 863 if (error && error != ENOENT) { 864 *vpp = NULLVP; 865 return error; 866 } 867 868 if (cnp->cn_flags & PDIRUNLOCK) { 869 err2 = vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 870 if (err2 != 0) { 871 *vpp = NULLVP; 872 return err2; 873 } 874 cnp->cn_flags &= ~PDIRUNLOCK; 875 } 876 877 err2 = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, cnp->cn_proc); 878 if (err2 != 0) { 879 if (error == 0) { 880 if (*vpp != dvp) 881 vput(*vpp); 882 else 883 vrele(*vpp); 884 } 885 *vpp = NULLVP; 886 return err2; 887 } 888 889 if (VOP_GETATTR(dvp, &vattr, cnp->cn_cred, 890 cnp->cn_proc) || timespeccmp(&vattr.va_mtime, 891 &VTONFS(dvp)->n_nctime, !=)) { 892 if (error == 0) { 893 if (*vpp != dvp) 894 vput(*vpp); 895 else 896 vrele(*vpp); 897 *vpp = NULLVP; 898 } 899 cache_purge1(dvp, NULL, PURGE_CHILDREN); 900 timespecclear(&np->n_nctime); 901 goto dorpc; 902 } 903 904 if (error == ENOENT) { 905 return ENOENT; 906 } 907 908 newvp = *vpp; 909 if (!VOP_GETATTR(newvp, &vattr, cnp->cn_cred, cnp->cn_proc) 910 && vattr.va_ctime.tv_sec == VTONFS(newvp)->n_ctime) 911 { 912 nfsstats.lookupcache_hits++; 913 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)) 914 cnp->cn_flags |= SAVENAME; 915 if ((!lockparent || !(flags & ISLASTCN)) && 916 newvp != dvp) 917 VOP_UNLOCK(dvp, 0); 918 KASSERT(newvp->v_type != VNON); 919 return (0); 920 } 921 cache_purge1(newvp, NULL, PURGE_PARENTS); 922 if (newvp != dvp) 923 vput(newvp); 924 else 925 vrele(newvp); 926 *vpp = NULLVP; 927 } 928 dorpc: 929 error = 0; 930 newvp = NULLVP; 931 nfsstats.lookupcache_misses++; 932 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 933 len = cnp->cn_namelen; 934 nfsm_reqhead(np, NFSPROC_LOOKUP, 935 NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(len)); 936 nfsm_fhtom(np, v3); 937 nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN); 938 nfsm_request(np, NFSPROC_LOOKUP, cnp->cn_proc, cnp->cn_cred); 939 if (error) { 940 nfsm_postop_attr(dvp, attrflag, 0); 941 m_freem(mrep); 942 goto nfsmout; 943 } 944 nfsm_getfh(fhp, fhsize, v3); 945 946 /* 947 * Handle RENAME case... 948 */ 949 if (cnp->cn_nameiop == RENAME && wantparent && (flags & ISLASTCN)) { 950 if (NFS_CMPFH(np, fhp, fhsize)) { 951 m_freem(mrep); 952 return (EISDIR); 953 } 954 error = nfs_nget(dvp->v_mount, fhp, fhsize, &np); 955 if (error) { 956 m_freem(mrep); 957 return error; 958 } 959 newvp = NFSTOV(np); 960 if (v3) { 961 nfsm_postop_attr(newvp, attrflag, 0); 962 nfsm_postop_attr(dvp, attrflag, 0); 963 } else 964 nfsm_loadattr(newvp, (struct vattr *)0, 0); 965 *vpp = newvp; 966 m_freem(mrep); 967 cnp->cn_flags |= SAVENAME; 968 if (!lockparent) { 969 VOP_UNLOCK(dvp, 0); 970 cnp->cn_flags |= PDIRUNLOCK; 971 } 972 goto validate; 973 } 974 975 /* 976 * The postop attr handling is duplicated for each if case, 977 * because it should be done while dvp is locked (unlocking 978 * dvp is different for each case). 979 */ 980 981 if (NFS_CMPFH(np, fhp, fhsize)) { 982 /* 983 * "." lookup 984 */ 985 VREF(dvp); 986 newvp = dvp; 987 if (v3) { 988 nfsm_postop_attr(newvp, attrflag, 0); 989 nfsm_postop_attr(dvp, attrflag, 0); 990 } else 991 nfsm_loadattr(newvp, (struct vattr *)0, 0); 992 } else if (flags & ISDOTDOT) { 993 /* 994 * ".." lookup 995 */ 996 VOP_UNLOCK(dvp, 0); 997 cnp->cn_flags |= PDIRUNLOCK; 998 999 error = nfs_nget(dvp->v_mount, fhp, fhsize, &np); 1000 if (error) { 1001 if (vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY) == 0) 1002 cnp->cn_flags &= ~PDIRUNLOCK; 1003 m_freem(mrep); 1004 return error; 1005 } 1006 newvp = NFSTOV(np); 1007 1008 if (v3) { 1009 nfsm_postop_attr(newvp, attrflag, 0); 1010 nfsm_postop_attr(dvp, attrflag, 0); 1011 } else 1012 nfsm_loadattr(newvp, (struct vattr *)0, 0); 1013 1014 if (lockparent && (flags & ISLASTCN)) { 1015 if ((error = vn_lock(dvp, LK_EXCLUSIVE))) { 1016 m_freem(mrep); 1017 vput(newvp); 1018 return error; 1019 } 1020 cnp->cn_flags &= ~PDIRUNLOCK; 1021 } 1022 } else { 1023 /* 1024 * Other lookups. 1025 */ 1026 error = nfs_nget(dvp->v_mount, fhp, fhsize, &np); 1027 if (error) { 1028 m_freem(mrep); 1029 return error; 1030 } 1031 newvp = NFSTOV(np); 1032 if (v3) { 1033 nfsm_postop_attr(newvp, attrflag, 0); 1034 nfsm_postop_attr(dvp, attrflag, 0); 1035 } else 1036 nfsm_loadattr(newvp, (struct vattr *)0, 0); 1037 if (!lockparent || !(flags & ISLASTCN)) { 1038 VOP_UNLOCK(dvp, 0); 1039 cnp->cn_flags |= PDIRUNLOCK; 1040 } 1041 } 1042 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)) 1043 cnp->cn_flags |= SAVENAME; 1044 if ((cnp->cn_flags & MAKEENTRY) && 1045 (cnp->cn_nameiop != DELETE || !(flags & ISLASTCN))) { 1046 nfs_cache_enter(dvp, newvp, cnp); 1047 } 1048 *vpp = newvp; 1049 nfsm_reqdone; 1050 if (error) { 1051 /* 1052 * We get here only because of errors returned by 1053 * the RPC. Otherwise we'll have returned above 1054 * (the nfsm_* macros will jump to nfsm_reqdone 1055 * on error). 1056 */ 1057 if (error == ENOENT && (cnp->cn_flags & MAKEENTRY) && 1058 cnp->cn_nameiop != CREATE) { 1059 nfs_cache_enter(dvp, NULL, cnp); 1060 } 1061 if (newvp != NULLVP) { 1062 vrele(newvp); 1063 if (newvp != dvp) 1064 VOP_UNLOCK(newvp, 0); 1065 } 1066 if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME) && 1067 (flags & ISLASTCN) && error == ENOENT) { 1068 if (dvp->v_mount->mnt_flag & MNT_RDONLY) 1069 error = EROFS; 1070 else 1071 error = EJUSTRETURN; 1072 } 1073 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)) 1074 cnp->cn_flags |= SAVENAME; 1075 *vpp = NULL; 1076 return error; 1077 } 1078 1079 validate: 1080 /* 1081 * make sure we have valid type and size. 1082 */ 1083 1084 newvp = *vpp; 1085 if (newvp->v_type == VNON) { 1086 struct vattr vattr; /* dummy */ 1087 1088 KASSERT(VTONFS(newvp)->n_attrstamp == 0); 1089 error = VOP_GETATTR(newvp, &vattr, cnp->cn_cred, cnp->cn_proc); 1090 if (error) { 1091 vput(newvp); 1092 *vpp = NULL; 1093 } 1094 } 1095 1096 return error; 1097 } 1098 1099 /* 1100 * nfs read call. 1101 * Just call nfs_bioread() to do the work. 1102 */ 1103 int 1104 nfs_read(v) 1105 void *v; 1106 { 1107 struct vop_read_args /* { 1108 struct vnode *a_vp; 1109 struct uio *a_uio; 1110 int a_ioflag; 1111 struct ucred *a_cred; 1112 } */ *ap = v; 1113 struct vnode *vp = ap->a_vp; 1114 1115 if (vp->v_type != VREG) 1116 return (EPERM); 1117 return (nfs_bioread(vp, ap->a_uio, ap->a_ioflag, ap->a_cred, 0)); 1118 } 1119 1120 /* 1121 * nfs readlink call 1122 */ 1123 int 1124 nfs_readlink(v) 1125 void *v; 1126 { 1127 struct vop_readlink_args /* { 1128 struct vnode *a_vp; 1129 struct uio *a_uio; 1130 struct ucred *a_cred; 1131 } */ *ap = v; 1132 struct vnode *vp = ap->a_vp; 1133 1134 if (vp->v_type != VLNK) 1135 return (EPERM); 1136 return (nfs_bioread(vp, ap->a_uio, 0, ap->a_cred, 0)); 1137 } 1138 1139 /* 1140 * Do a readlink rpc. 1141 * Called by nfs_doio() from below the buffer cache. 1142 */ 1143 int 1144 nfs_readlinkrpc(vp, uiop, cred) 1145 struct vnode *vp; 1146 struct uio *uiop; 1147 struct ucred *cred; 1148 { 1149 u_int32_t *tl; 1150 caddr_t cp; 1151 int32_t t1, t2; 1152 caddr_t bpos, dpos, cp2; 1153 int error = 0, attrflag; 1154 uint32_t len; 1155 struct mbuf *mreq, *mrep, *md, *mb; 1156 const int v3 = NFS_ISV3(vp); 1157 struct nfsnode *np = VTONFS(vp); 1158 1159 nfsstats.rpccnt[NFSPROC_READLINK]++; 1160 nfsm_reqhead(np, NFSPROC_READLINK, NFSX_FH(v3)); 1161 nfsm_fhtom(np, v3); 1162 nfsm_request(np, NFSPROC_READLINK, uiop->uio_procp, cred); 1163 if (v3) 1164 nfsm_postop_attr(vp, attrflag, 0); 1165 if (!error) { 1166 if (v3) { 1167 nfsm_dissect(tl, uint32_t *, NFSX_UNSIGNED); 1168 len = fxdr_unsigned(uint32_t, *tl); 1169 if (len > MAXPATHLEN) { 1170 /* 1171 * this pathname is too long for us. 1172 */ 1173 m_freem(mrep); 1174 /* Solaris returns EINVAL. should we follow? */ 1175 error = ENAMETOOLONG; 1176 goto nfsmout; 1177 } 1178 } else { 1179 nfsm_strsiz(len, NFS_MAXPATHLEN); 1180 } 1181 nfsm_mtouio(uiop, len); 1182 } 1183 nfsm_reqdone; 1184 return (error); 1185 } 1186 1187 /* 1188 * nfs read rpc call 1189 * Ditto above 1190 */ 1191 int 1192 nfs_readrpc(vp, uiop) 1193 struct vnode *vp; 1194 struct uio *uiop; 1195 { 1196 u_int32_t *tl; 1197 caddr_t cp; 1198 int32_t t1, t2; 1199 caddr_t bpos, dpos, cp2; 1200 struct mbuf *mreq, *mrep, *md, *mb; 1201 struct nfsmount *nmp; 1202 int error = 0, len, retlen, tsiz, eof, attrflag; 1203 const int v3 = NFS_ISV3(vp); 1204 struct nfsnode *np = VTONFS(vp); 1205 1206 #ifndef nolint 1207 eof = 0; 1208 #endif 1209 nmp = VFSTONFS(vp->v_mount); 1210 tsiz = uiop->uio_resid; 1211 if (uiop->uio_offset + tsiz > nmp->nm_maxfilesize) 1212 return (EFBIG); 1213 while (tsiz > 0) { 1214 nfsstats.rpccnt[NFSPROC_READ]++; 1215 len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz; 1216 nfsm_reqhead(np, NFSPROC_READ, NFSX_FH(v3) + NFSX_UNSIGNED * 3); 1217 nfsm_fhtom(np, v3); 1218 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1219 if (v3) { 1220 txdr_hyper(uiop->uio_offset, tl); 1221 *(tl + 2) = txdr_unsigned(len); 1222 } else { 1223 *tl++ = txdr_unsigned(uiop->uio_offset); 1224 *tl++ = txdr_unsigned(len); 1225 *tl = 0; 1226 } 1227 nfsm_request(np, NFSPROC_READ, uiop->uio_procp, np->n_rcred); 1228 if (v3) { 1229 nfsm_postop_attr(vp, attrflag, NAC_NOTRUNC); 1230 if (error) { 1231 m_freem(mrep); 1232 goto nfsmout; 1233 } 1234 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1235 eof = fxdr_unsigned(int, *(tl + 1)); 1236 } else 1237 nfsm_loadattr(vp, (struct vattr *)0, NAC_NOTRUNC); 1238 nfsm_strsiz(retlen, nmp->nm_rsize); 1239 nfsm_mtouio(uiop, retlen); 1240 m_freem(mrep); 1241 tsiz -= retlen; 1242 if (v3) { 1243 if (eof || retlen == 0) 1244 tsiz = 0; 1245 } else if (retlen < len) 1246 tsiz = 0; 1247 } 1248 nfsmout: 1249 return (error); 1250 } 1251 1252 struct nfs_writerpc_context { 1253 struct simplelock nwc_slock; 1254 volatile int nwc_mbufcount; 1255 }; 1256 1257 /* 1258 * free mbuf used to refer protected pages while write rpc call. 1259 * called at splvm. 1260 */ 1261 static void 1262 nfs_writerpc_extfree(struct mbuf *m, caddr_t buf, size_t size, void *arg) 1263 { 1264 struct nfs_writerpc_context *ctx = arg; 1265 1266 KASSERT(m != NULL); 1267 KASSERT(ctx != NULL); 1268 pool_cache_put(&mbpool_cache, m); 1269 simple_lock(&ctx->nwc_slock); 1270 if (--ctx->nwc_mbufcount == 0) { 1271 wakeup(ctx); 1272 } 1273 simple_unlock(&ctx->nwc_slock); 1274 } 1275 1276 /* 1277 * nfs write call 1278 */ 1279 int 1280 nfs_writerpc(vp, uiop, iomode, pageprotected, stalewriteverfp) 1281 struct vnode *vp; 1282 struct uio *uiop; 1283 int *iomode; 1284 boolean_t pageprotected; 1285 boolean_t *stalewriteverfp; 1286 { 1287 u_int32_t *tl; 1288 caddr_t cp; 1289 int32_t t1, t2; 1290 caddr_t bpos, dpos, cp2; 1291 struct mbuf *mreq, *mrep, *md, *mb; 1292 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1293 int error = 0, len, tsiz, wccflag = NFSV3_WCCRATTR, rlen, commit; 1294 const int v3 = NFS_ISV3(vp); 1295 int committed = NFSV3WRITE_FILESYNC; 1296 struct nfsnode *np = VTONFS(vp); 1297 struct nfs_writerpc_context ctx; 1298 int s; 1299 struct lwp *l = NULL; 1300 size_t origresid; 1301 1302 simple_lock_init(&ctx.nwc_slock); 1303 ctx.nwc_mbufcount = 1; 1304 1305 if (vp->v_mount->mnt_flag & MNT_RDONLY) { 1306 panic("writerpc readonly vp %p", vp); 1307 } 1308 1309 #ifdef DIAGNOSTIC 1310 if (uiop->uio_iovcnt != 1) 1311 panic("nfs: writerpc iovcnt > 1"); 1312 #endif 1313 tsiz = uiop->uio_resid; 1314 if (uiop->uio_offset + tsiz > nmp->nm_maxfilesize) 1315 return (EFBIG); 1316 if (pageprotected) { 1317 l = curlwp; 1318 PHOLD(l); 1319 } 1320 retry: 1321 origresid = uiop->uio_resid; 1322 KASSERT(origresid == uiop->uio_iov->iov_len); 1323 while (tsiz > 0) { 1324 uint32_t datalen; /* data bytes need to be allocated in mbuf */ 1325 uint32_t backup; 1326 boolean_t stalewriteverf = FALSE; 1327 1328 nfsstats.rpccnt[NFSPROC_WRITE]++; 1329 len = min(tsiz, nmp->nm_wsize); 1330 datalen = pageprotected ? 0 : nfsm_rndup(len); 1331 nfsm_reqhead(np, NFSPROC_WRITE, 1332 NFSX_FH(v3) + 5 * NFSX_UNSIGNED + datalen); 1333 nfsm_fhtom(np, v3); 1334 if (v3) { 1335 nfsm_build(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1336 txdr_hyper(uiop->uio_offset, tl); 1337 tl += 2; 1338 *tl++ = txdr_unsigned(len); 1339 *tl++ = txdr_unsigned(*iomode); 1340 *tl = txdr_unsigned(len); 1341 } else { 1342 u_int32_t x; 1343 1344 nfsm_build(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1345 /* Set both "begin" and "current" to non-garbage. */ 1346 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1347 *tl++ = x; /* "begin offset" */ 1348 *tl++ = x; /* "current offset" */ 1349 x = txdr_unsigned(len); 1350 *tl++ = x; /* total to this offset */ 1351 *tl = x; /* size of this write */ 1352 1353 } 1354 if (pageprotected) { 1355 /* 1356 * since we know pages can't be modified during i/o, 1357 * no need to copy them for us. 1358 */ 1359 struct mbuf *m; 1360 struct iovec *iovp = uiop->uio_iov; 1361 1362 m = m_get(M_WAIT, MT_DATA); 1363 MCLAIM(m, &nfs_mowner); 1364 MEXTADD(m, iovp->iov_base, len, M_MBUF, 1365 nfs_writerpc_extfree, &ctx); 1366 m->m_flags |= M_EXT_ROMAP; 1367 m->m_len = len; 1368 mb->m_next = m; 1369 /* 1370 * no need to maintain mb and bpos here 1371 * because no one care them later. 1372 */ 1373 #if 0 1374 mb = m; 1375 bpos = mtod(caddr_t, mb) + mb->m_len; 1376 #endif 1377 iovp->iov_base = (char *)iovp->iov_base + len; 1378 iovp->iov_len -= len; 1379 uiop->uio_offset += len; 1380 uiop->uio_resid -= len; 1381 s = splvm(); 1382 simple_lock(&ctx.nwc_slock); 1383 ctx.nwc_mbufcount++; 1384 simple_unlock(&ctx.nwc_slock); 1385 splx(s); 1386 nfs_zeropad(mb, 0, nfsm_padlen(len)); 1387 } else { 1388 nfsm_uiotom(uiop, len); 1389 } 1390 nfsm_request(np, NFSPROC_WRITE, uiop->uio_procp, np->n_wcred); 1391 if (v3) { 1392 wccflag = NFSV3_WCCCHK; 1393 nfsm_wcc_data(vp, wccflag, NAC_NOTRUNC); 1394 if (!error) { 1395 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1396 + NFSX_V3WRITEVERF); 1397 rlen = fxdr_unsigned(int, *tl++); 1398 if (rlen == 0) { 1399 error = NFSERR_IO; 1400 m_freem(mrep); 1401 break; 1402 } else if (rlen < len) { 1403 backup = len - rlen; 1404 uiop->uio_iov->iov_base = 1405 (caddr_t)uiop->uio_iov->iov_base - 1406 backup; 1407 uiop->uio_iov->iov_len += backup; 1408 uiop->uio_offset -= backup; 1409 uiop->uio_resid += backup; 1410 len = rlen; 1411 } 1412 commit = fxdr_unsigned(int, *tl++); 1413 1414 /* 1415 * Return the lowest committment level 1416 * obtained by any of the RPCs. 1417 */ 1418 if (committed == NFSV3WRITE_FILESYNC) 1419 committed = commit; 1420 else if (committed == NFSV3WRITE_DATASYNC && 1421 commit == NFSV3WRITE_UNSTABLE) 1422 committed = commit; 1423 simple_lock(&nmp->nm_slock); 1424 if ((nmp->nm_iflag & NFSMNT_HASWRITEVERF) == 0){ 1425 memcpy(nmp->nm_writeverf, tl, 1426 NFSX_V3WRITEVERF); 1427 nmp->nm_iflag |= NFSMNT_HASWRITEVERF; 1428 } else if ((nmp->nm_iflag & 1429 NFSMNT_STALEWRITEVERF) || 1430 memcmp(tl, nmp->nm_writeverf, 1431 NFSX_V3WRITEVERF)) { 1432 memcpy(nmp->nm_writeverf, tl, 1433 NFSX_V3WRITEVERF); 1434 /* 1435 * note NFSMNT_STALEWRITEVERF 1436 * if we're the first thread to 1437 * notice it. 1438 */ 1439 if ((nmp->nm_iflag & 1440 NFSMNT_STALEWRITEVERF) == 0) { 1441 stalewriteverf = TRUE; 1442 nmp->nm_iflag |= 1443 NFSMNT_STALEWRITEVERF; 1444 } 1445 } 1446 simple_unlock(&nmp->nm_slock); 1447 } 1448 } else 1449 nfsm_loadattr(vp, (struct vattr *)0, NAC_NOTRUNC); 1450 if (wccflag) 1451 VTONFS(vp)->n_mtime = VTONFS(vp)->n_vattr->va_mtime; 1452 m_freem(mrep); 1453 if (error) 1454 break; 1455 tsiz -= len; 1456 if (stalewriteverf) { 1457 *stalewriteverfp = TRUE; 1458 stalewriteverf = FALSE; 1459 if (committed == NFSV3WRITE_UNSTABLE && 1460 len != origresid) { 1461 /* 1462 * if our write requests weren't atomic but 1463 * unstable, datas in previous iterations 1464 * might have already been lost now. 1465 * then, we should resend them to nfsd. 1466 */ 1467 backup = origresid - tsiz; 1468 uiop->uio_iov->iov_base = 1469 (caddr_t)uiop->uio_iov->iov_base - backup; 1470 uiop->uio_iov->iov_len += backup; 1471 uiop->uio_offset -= backup; 1472 uiop->uio_resid += backup; 1473 tsiz = origresid; 1474 goto retry; 1475 } 1476 } 1477 } 1478 if (pageprotected) { 1479 /* 1480 * wait until mbufs go away. 1481 * retransmitted mbufs can survive longer than rpc requests 1482 * themselves. 1483 */ 1484 s = splvm(); 1485 simple_lock(&ctx.nwc_slock); 1486 ctx.nwc_mbufcount--; 1487 while (ctx.nwc_mbufcount > 0) { 1488 ltsleep(&ctx, PRIBIO, "nfsmblk", 0, &ctx.nwc_slock); 1489 } 1490 simple_unlock(&ctx.nwc_slock); 1491 splx(s); 1492 PRELE(l); 1493 } 1494 nfsmout: 1495 *iomode = committed; 1496 if (error) 1497 uiop->uio_resid = tsiz; 1498 return (error); 1499 } 1500 1501 /* 1502 * nfs mknod rpc 1503 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1504 * mode set to specify the file type and the size field for rdev. 1505 */ 1506 int 1507 nfs_mknodrpc(dvp, vpp, cnp, vap) 1508 struct vnode *dvp; 1509 struct vnode **vpp; 1510 struct componentname *cnp; 1511 struct vattr *vap; 1512 { 1513 struct nfsv2_sattr *sp; 1514 u_int32_t *tl; 1515 caddr_t cp; 1516 int32_t t1, t2; 1517 struct vnode *newvp = (struct vnode *)0; 1518 struct nfsnode *dnp, *np; 1519 char *cp2; 1520 caddr_t bpos, dpos; 1521 int error = 0, wccflag = NFSV3_WCCRATTR, gotvp = 0; 1522 struct mbuf *mreq, *mrep, *md, *mb; 1523 u_int32_t rdev; 1524 const int v3 = NFS_ISV3(dvp); 1525 1526 if (vap->va_type == VCHR || vap->va_type == VBLK) 1527 rdev = txdr_unsigned(vap->va_rdev); 1528 else if (vap->va_type == VFIFO || vap->va_type == VSOCK) 1529 rdev = nfs_xdrneg1; 1530 else { 1531 VOP_ABORTOP(dvp, cnp); 1532 vput(dvp); 1533 return (EOPNOTSUPP); 1534 } 1535 nfsstats.rpccnt[NFSPROC_MKNOD]++; 1536 dnp = VTONFS(dvp); 1537 nfsm_reqhead(dnp, NFSPROC_MKNOD, NFSX_FH(v3) + 4 * NFSX_UNSIGNED + 1538 + nfsm_rndup(cnp->cn_namelen) + NFSX_SATTR(v3)); 1539 nfsm_fhtom(dnp, v3); 1540 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1541 if (v3) { 1542 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 1543 *tl++ = vtonfsv3_type(vap->va_type); 1544 nfsm_v3attrbuild(vap, FALSE); 1545 if (vap->va_type == VCHR || vap->va_type == VBLK) { 1546 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1547 *tl++ = txdr_unsigned(major(vap->va_rdev)); 1548 *tl = txdr_unsigned(minor(vap->va_rdev)); 1549 } 1550 } else { 1551 nfsm_build(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 1552 sp->sa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 1553 sp->sa_uid = nfs_xdrneg1; 1554 sp->sa_gid = nfs_xdrneg1; 1555 sp->sa_size = rdev; 1556 txdr_nfsv2time(&vap->va_atime, &sp->sa_atime); 1557 txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime); 1558 } 1559 nfsm_request(dnp, NFSPROC_MKNOD, cnp->cn_proc, cnp->cn_cred); 1560 if (!error) { 1561 nfsm_mtofh(dvp, newvp, v3, gotvp); 1562 if (!gotvp) { 1563 error = nfs_lookitup(dvp, cnp->cn_nameptr, 1564 cnp->cn_namelen, cnp->cn_cred, cnp->cn_proc, &np); 1565 if (!error) 1566 newvp = NFSTOV(np); 1567 } 1568 } 1569 if (v3) 1570 nfsm_wcc_data(dvp, wccflag, 0); 1571 nfsm_reqdone; 1572 if (error) { 1573 if (newvp) 1574 vput(newvp); 1575 } else { 1576 if (cnp->cn_flags & MAKEENTRY) 1577 nfs_cache_enter(dvp, newvp, cnp); 1578 *vpp = newvp; 1579 } 1580 PNBUF_PUT(cnp->cn_pnbuf); 1581 VTONFS(dvp)->n_flag |= NMODIFIED; 1582 if (!wccflag) 1583 NFS_INVALIDATE_ATTRCACHE(VTONFS(dvp)); 1584 vput(dvp); 1585 return (error); 1586 } 1587 1588 /* 1589 * nfs mknod vop 1590 * just call nfs_mknodrpc() to do the work. 1591 */ 1592 /* ARGSUSED */ 1593 int 1594 nfs_mknod(v) 1595 void *v; 1596 { 1597 struct vop_mknod_args /* { 1598 struct vnode *a_dvp; 1599 struct vnode **a_vpp; 1600 struct componentname *a_cnp; 1601 struct vattr *a_vap; 1602 } */ *ap = v; 1603 int error; 1604 1605 error = nfs_mknodrpc(ap->a_dvp, ap->a_vpp, ap->a_cnp, ap->a_vap); 1606 VN_KNOTE(ap->a_dvp, NOTE_WRITE); 1607 return (error); 1608 } 1609 1610 static u_long create_verf; 1611 /* 1612 * nfs file create call 1613 */ 1614 int 1615 nfs_create(v) 1616 void *v; 1617 { 1618 struct vop_create_args /* { 1619 struct vnode *a_dvp; 1620 struct vnode **a_vpp; 1621 struct componentname *a_cnp; 1622 struct vattr *a_vap; 1623 } */ *ap = v; 1624 struct vnode *dvp = ap->a_dvp; 1625 struct vattr *vap = ap->a_vap; 1626 struct componentname *cnp = ap->a_cnp; 1627 struct nfsv2_sattr *sp; 1628 u_int32_t *tl; 1629 caddr_t cp; 1630 int32_t t1, t2; 1631 struct nfsnode *dnp, *np = (struct nfsnode *)0; 1632 struct vnode *newvp = (struct vnode *)0; 1633 caddr_t bpos, dpos, cp2; 1634 int error, wccflag = NFSV3_WCCRATTR, gotvp = 0, fmode = 0; 1635 struct mbuf *mreq, *mrep, *md, *mb; 1636 const int v3 = NFS_ISV3(dvp); 1637 1638 /* 1639 * Oops, not for me.. 1640 */ 1641 if (vap->va_type == VSOCK) 1642 return (nfs_mknodrpc(dvp, ap->a_vpp, cnp, vap)); 1643 1644 KASSERT(vap->va_type == VREG); 1645 1646 #ifdef VA_EXCLUSIVE 1647 if (vap->va_vaflags & VA_EXCLUSIVE) 1648 fmode |= O_EXCL; 1649 #endif 1650 again: 1651 error = 0; 1652 nfsstats.rpccnt[NFSPROC_CREATE]++; 1653 dnp = VTONFS(dvp); 1654 nfsm_reqhead(dnp, NFSPROC_CREATE, NFSX_FH(v3) + 2 * NFSX_UNSIGNED + 1655 nfsm_rndup(cnp->cn_namelen) + NFSX_SATTR(v3)); 1656 nfsm_fhtom(dnp, v3); 1657 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1658 if (v3) { 1659 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 1660 if (fmode & O_EXCL) { 1661 *tl = txdr_unsigned(NFSV3CREATE_EXCLUSIVE); 1662 nfsm_build(tl, u_int32_t *, NFSX_V3CREATEVERF); 1663 #ifdef INET 1664 if (TAILQ_FIRST(&in_ifaddr)) 1665 *tl++ = TAILQ_FIRST(&in_ifaddr)->ia_addr.sin_addr.s_addr; 1666 else 1667 *tl++ = create_verf; 1668 #else 1669 *tl++ = create_verf; 1670 #endif 1671 *tl = ++create_verf; 1672 } else { 1673 *tl = txdr_unsigned(NFSV3CREATE_UNCHECKED); 1674 nfsm_v3attrbuild(vap, FALSE); 1675 } 1676 } else { 1677 nfsm_build(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 1678 sp->sa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 1679 sp->sa_uid = nfs_xdrneg1; 1680 sp->sa_gid = nfs_xdrneg1; 1681 sp->sa_size = 0; 1682 txdr_nfsv2time(&vap->va_atime, &sp->sa_atime); 1683 txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime); 1684 } 1685 nfsm_request(dnp, NFSPROC_CREATE, cnp->cn_proc, cnp->cn_cred); 1686 if (!error) { 1687 nfsm_mtofh(dvp, newvp, v3, gotvp); 1688 if (!gotvp) { 1689 error = nfs_lookitup(dvp, cnp->cn_nameptr, 1690 cnp->cn_namelen, cnp->cn_cred, cnp->cn_proc, &np); 1691 if (!error) 1692 newvp = NFSTOV(np); 1693 } 1694 } 1695 if (v3) 1696 nfsm_wcc_data(dvp, wccflag, 0); 1697 nfsm_reqdone; 1698 if (error) { 1699 if (v3 && (fmode & O_EXCL) && error == NFSERR_NOTSUPP) { 1700 fmode &= ~O_EXCL; 1701 goto again; 1702 } 1703 if (newvp) 1704 vput(newvp); 1705 } else if (v3 && (fmode & O_EXCL)) { 1706 struct timeval tm = time; 1707 1708 /* 1709 * make sure that we'll update timestamps as 1710 * most server implementations use them to store 1711 * the create verifier. 1712 * 1713 * XXX it's better to use TOSERVER always. 1714 */ 1715 1716 if (vap->va_atime.tv_sec == VNOVAL) { 1717 vap->va_atime.tv_sec = tm.tv_sec; 1718 vap->va_atime.tv_nsec = tm.tv_usec * 1000; 1719 } 1720 if (vap->va_mtime.tv_sec == VNOVAL) { 1721 vap->va_mtime.tv_sec = tm.tv_sec; 1722 vap->va_mtime.tv_nsec = tm.tv_usec * 1000; 1723 } 1724 1725 error = nfs_setattrrpc(newvp, vap, cnp->cn_cred, cnp->cn_proc); 1726 } 1727 if (!error) { 1728 if (cnp->cn_flags & MAKEENTRY) 1729 nfs_cache_enter(dvp, newvp, cnp); 1730 *ap->a_vpp = newvp; 1731 } 1732 PNBUF_PUT(cnp->cn_pnbuf); 1733 VTONFS(dvp)->n_flag |= NMODIFIED; 1734 if (!wccflag) 1735 NFS_INVALIDATE_ATTRCACHE(VTONFS(dvp)); 1736 VN_KNOTE(ap->a_dvp, NOTE_WRITE); 1737 vput(dvp); 1738 return (error); 1739 } 1740 1741 /* 1742 * nfs file remove call 1743 * To try and make nfs semantics closer to ufs semantics, a file that has 1744 * other processes using the vnode is renamed instead of removed and then 1745 * removed later on the last close. 1746 * - If v_usecount > 1 1747 * If a rename is not already in the works 1748 * call nfs_sillyrename() to set it up 1749 * else 1750 * do the remove rpc 1751 */ 1752 int 1753 nfs_remove(v) 1754 void *v; 1755 { 1756 struct vop_remove_args /* { 1757 struct vnodeop_desc *a_desc; 1758 struct vnode * a_dvp; 1759 struct vnode * a_vp; 1760 struct componentname * a_cnp; 1761 } */ *ap = v; 1762 struct vnode *vp = ap->a_vp; 1763 struct vnode *dvp = ap->a_dvp; 1764 struct componentname *cnp = ap->a_cnp; 1765 struct nfsnode *np = VTONFS(vp); 1766 int error = 0; 1767 struct vattr vattr; 1768 1769 #ifndef DIAGNOSTIC 1770 if ((cnp->cn_flags & HASBUF) == 0) 1771 panic("nfs_remove: no name"); 1772 if (vp->v_usecount < 1) 1773 panic("nfs_remove: bad v_usecount"); 1774 #endif 1775 if (vp->v_type == VDIR) 1776 error = EPERM; 1777 else if (vp->v_usecount == 1 || (np->n_sillyrename && 1778 VOP_GETATTR(vp, &vattr, cnp->cn_cred, cnp->cn_proc) == 0 && 1779 vattr.va_nlink > 1)) { 1780 /* 1781 * Purge the name cache so that the chance of a lookup for 1782 * the name succeeding while the remove is in progress is 1783 * minimized. Without node locking it can still happen, such 1784 * that an I/O op returns ESTALE, but since you get this if 1785 * another host removes the file.. 1786 */ 1787 cache_purge(vp); 1788 /* 1789 * throw away biocache buffers, mainly to avoid 1790 * unnecessary delayed writes later. 1791 */ 1792 error = nfs_vinvalbuf(vp, 0, cnp->cn_cred, cnp->cn_proc, 1); 1793 /* Do the rpc */ 1794 if (error != EINTR) 1795 error = nfs_removerpc(dvp, cnp->cn_nameptr, 1796 cnp->cn_namelen, cnp->cn_cred, cnp->cn_proc); 1797 } else if (!np->n_sillyrename) 1798 error = nfs_sillyrename(dvp, vp, cnp); 1799 PNBUF_PUT(cnp->cn_pnbuf); 1800 if (!error && nfs_getattrcache(vp, &vattr) == 0 && 1801 vattr.va_nlink == 1) { 1802 np->n_flag |= NREMOVED; 1803 } 1804 NFS_INVALIDATE_ATTRCACHE(np); 1805 VN_KNOTE(vp, NOTE_DELETE); 1806 VN_KNOTE(dvp, NOTE_WRITE); 1807 if (dvp == vp) 1808 vrele(vp); 1809 else 1810 vput(vp); 1811 vput(dvp); 1812 return (error); 1813 } 1814 1815 /* 1816 * nfs file remove rpc called from nfs_inactive 1817 */ 1818 int 1819 nfs_removeit(sp) 1820 struct sillyrename *sp; 1821 { 1822 1823 return (nfs_removerpc(sp->s_dvp, sp->s_name, sp->s_namlen, sp->s_cred, 1824 (struct proc *)0)); 1825 } 1826 1827 /* 1828 * Nfs remove rpc, called from nfs_remove() and nfs_removeit(). 1829 */ 1830 int 1831 nfs_removerpc(dvp, name, namelen, cred, proc) 1832 struct vnode *dvp; 1833 const char *name; 1834 int namelen; 1835 struct ucred *cred; 1836 struct proc *proc; 1837 { 1838 u_int32_t *tl; 1839 caddr_t cp; 1840 int32_t t1, t2; 1841 caddr_t bpos, dpos, cp2; 1842 int error = 0, wccflag = NFSV3_WCCRATTR; 1843 struct mbuf *mreq, *mrep, *md, *mb; 1844 const int v3 = NFS_ISV3(dvp); 1845 int rexmit; 1846 struct nfsnode *dnp = VTONFS(dvp); 1847 1848 nfsstats.rpccnt[NFSPROC_REMOVE]++; 1849 nfsm_reqhead(dnp, NFSPROC_REMOVE, 1850 NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(namelen)); 1851 nfsm_fhtom(dnp, v3); 1852 nfsm_strtom(name, namelen, NFS_MAXNAMLEN); 1853 nfsm_request1(dnp, NFSPROC_REMOVE, proc, cred, &rexmit); 1854 if (v3) 1855 nfsm_wcc_data(dvp, wccflag, 0); 1856 nfsm_reqdone; 1857 VTONFS(dvp)->n_flag |= NMODIFIED; 1858 if (!wccflag) 1859 NFS_INVALIDATE_ATTRCACHE(VTONFS(dvp)); 1860 /* 1861 * Kludge City: If the first reply to the remove rpc is lost.. 1862 * the reply to the retransmitted request will be ENOENT 1863 * since the file was in fact removed 1864 * Therefore, we cheat and return success. 1865 */ 1866 if (rexmit && error == ENOENT) 1867 error = 0; 1868 return (error); 1869 } 1870 1871 /* 1872 * nfs file rename call 1873 */ 1874 int 1875 nfs_rename(v) 1876 void *v; 1877 { 1878 struct vop_rename_args /* { 1879 struct vnode *a_fdvp; 1880 struct vnode *a_fvp; 1881 struct componentname *a_fcnp; 1882 struct vnode *a_tdvp; 1883 struct vnode *a_tvp; 1884 struct componentname *a_tcnp; 1885 } */ *ap = v; 1886 struct vnode *fvp = ap->a_fvp; 1887 struct vnode *tvp = ap->a_tvp; 1888 struct vnode *fdvp = ap->a_fdvp; 1889 struct vnode *tdvp = ap->a_tdvp; 1890 struct componentname *tcnp = ap->a_tcnp; 1891 struct componentname *fcnp = ap->a_fcnp; 1892 int error; 1893 1894 #ifndef DIAGNOSTIC 1895 if ((tcnp->cn_flags & HASBUF) == 0 || 1896 (fcnp->cn_flags & HASBUF) == 0) 1897 panic("nfs_rename: no name"); 1898 #endif 1899 /* Check for cross-device rename */ 1900 if ((fvp->v_mount != tdvp->v_mount) || 1901 (tvp && (fvp->v_mount != tvp->v_mount))) { 1902 error = EXDEV; 1903 goto out; 1904 } 1905 1906 /* 1907 * If the tvp exists and is in use, sillyrename it before doing the 1908 * rename of the new file over it. 1909 */ 1910 if (tvp && tvp->v_usecount > 1 && !VTONFS(tvp)->n_sillyrename && 1911 tvp->v_type != VDIR && !nfs_sillyrename(tdvp, tvp, tcnp)) { 1912 VN_KNOTE(tvp, NOTE_DELETE); 1913 vput(tvp); 1914 tvp = NULL; 1915 } 1916 1917 error = nfs_renamerpc(fdvp, fcnp->cn_nameptr, fcnp->cn_namelen, 1918 tdvp, tcnp->cn_nameptr, tcnp->cn_namelen, tcnp->cn_cred, 1919 tcnp->cn_proc); 1920 1921 VN_KNOTE(fdvp, NOTE_WRITE); 1922 VN_KNOTE(tdvp, NOTE_WRITE); 1923 if (fvp->v_type == VDIR) { 1924 if (tvp != NULL && tvp->v_type == VDIR) 1925 cache_purge(tdvp); 1926 cache_purge(fdvp); 1927 } 1928 out: 1929 if (tdvp == tvp) 1930 vrele(tdvp); 1931 else 1932 vput(tdvp); 1933 if (tvp) 1934 vput(tvp); 1935 vrele(fdvp); 1936 vrele(fvp); 1937 return (error); 1938 } 1939 1940 /* 1941 * nfs file rename rpc called from nfs_remove() above 1942 */ 1943 int 1944 nfs_renameit(sdvp, scnp, sp) 1945 struct vnode *sdvp; 1946 struct componentname *scnp; 1947 struct sillyrename *sp; 1948 { 1949 return (nfs_renamerpc(sdvp, scnp->cn_nameptr, scnp->cn_namelen, 1950 sdvp, sp->s_name, sp->s_namlen, scnp->cn_cred, scnp->cn_proc)); 1951 } 1952 1953 /* 1954 * Do an nfs rename rpc. Called from nfs_rename() and nfs_renameit(). 1955 */ 1956 int 1957 nfs_renamerpc(fdvp, fnameptr, fnamelen, tdvp, tnameptr, tnamelen, cred, proc) 1958 struct vnode *fdvp; 1959 const char *fnameptr; 1960 int fnamelen; 1961 struct vnode *tdvp; 1962 const char *tnameptr; 1963 int tnamelen; 1964 struct ucred *cred; 1965 struct proc *proc; 1966 { 1967 u_int32_t *tl; 1968 caddr_t cp; 1969 int32_t t1, t2; 1970 caddr_t bpos, dpos, cp2; 1971 int error = 0, fwccflag = NFSV3_WCCRATTR, twccflag = NFSV3_WCCRATTR; 1972 struct mbuf *mreq, *mrep, *md, *mb; 1973 const int v3 = NFS_ISV3(fdvp); 1974 int rexmit; 1975 struct nfsnode *fdnp = VTONFS(fdvp); 1976 1977 nfsstats.rpccnt[NFSPROC_RENAME]++; 1978 nfsm_reqhead(fdnp, NFSPROC_RENAME, 1979 (NFSX_FH(v3) + NFSX_UNSIGNED)*2 + nfsm_rndup(fnamelen) + 1980 nfsm_rndup(tnamelen)); 1981 nfsm_fhtom(fdnp, v3); 1982 nfsm_strtom(fnameptr, fnamelen, NFS_MAXNAMLEN); 1983 nfsm_fhtom(VTONFS(tdvp), v3); 1984 nfsm_strtom(tnameptr, tnamelen, NFS_MAXNAMLEN); 1985 nfsm_request1(fdnp, NFSPROC_RENAME, proc, cred, &rexmit); 1986 if (v3) { 1987 nfsm_wcc_data(fdvp, fwccflag, 0); 1988 nfsm_wcc_data(tdvp, twccflag, 0); 1989 } 1990 nfsm_reqdone; 1991 VTONFS(fdvp)->n_flag |= NMODIFIED; 1992 VTONFS(tdvp)->n_flag |= NMODIFIED; 1993 if (!fwccflag) 1994 NFS_INVALIDATE_ATTRCACHE(VTONFS(fdvp)); 1995 if (!twccflag) 1996 NFS_INVALIDATE_ATTRCACHE(VTONFS(tdvp)); 1997 /* 1998 * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry. 1999 */ 2000 if (rexmit && error == ENOENT) 2001 error = 0; 2002 return (error); 2003 } 2004 2005 /* 2006 * nfs hard link create call 2007 */ 2008 int 2009 nfs_link(v) 2010 void *v; 2011 { 2012 struct vop_link_args /* { 2013 struct vnode *a_dvp; 2014 struct vnode *a_vp; 2015 struct componentname *a_cnp; 2016 } */ *ap = v; 2017 struct vnode *vp = ap->a_vp; 2018 struct vnode *dvp = ap->a_dvp; 2019 struct componentname *cnp = ap->a_cnp; 2020 u_int32_t *tl; 2021 caddr_t cp; 2022 int32_t t1, t2; 2023 caddr_t bpos, dpos, cp2; 2024 int error = 0, wccflag = NFSV3_WCCRATTR, attrflag = 0; 2025 struct mbuf *mreq, *mrep, *md, *mb; 2026 /* XXX Should be const and initialised? */ 2027 int v3; 2028 int rexmit; 2029 struct nfsnode *np; 2030 2031 if (dvp->v_mount != vp->v_mount) { 2032 VOP_ABORTOP(dvp, cnp); 2033 vput(dvp); 2034 return (EXDEV); 2035 } 2036 if (dvp != vp) { 2037 error = vn_lock(vp, LK_EXCLUSIVE); 2038 if (error != 0) { 2039 VOP_ABORTOP(dvp, cnp); 2040 vput(dvp); 2041 return error; 2042 } 2043 } 2044 2045 /* 2046 * Push all writes to the server, so that the attribute cache 2047 * doesn't get "out of sync" with the server. 2048 * XXX There should be a better way! 2049 */ 2050 VOP_FSYNC(vp, cnp->cn_cred, FSYNC_WAIT, 0, 0, cnp->cn_proc); 2051 2052 v3 = NFS_ISV3(vp); 2053 nfsstats.rpccnt[NFSPROC_LINK]++; 2054 np = VTONFS(vp); 2055 nfsm_reqhead(np, NFSPROC_LINK, 2056 NFSX_FH(v3)*2 + NFSX_UNSIGNED + nfsm_rndup(cnp->cn_namelen)); 2057 nfsm_fhtom(np, v3); 2058 nfsm_fhtom(VTONFS(dvp), v3); 2059 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 2060 nfsm_request1(np, NFSPROC_LINK, cnp->cn_proc, cnp->cn_cred, &rexmit); 2061 if (v3) { 2062 nfsm_postop_attr(vp, attrflag, 0); 2063 nfsm_wcc_data(dvp, wccflag, 0); 2064 } 2065 nfsm_reqdone; 2066 PNBUF_PUT(cnp->cn_pnbuf); 2067 VTONFS(dvp)->n_flag |= NMODIFIED; 2068 if (!attrflag) 2069 NFS_INVALIDATE_ATTRCACHE(VTONFS(vp)); 2070 if (!wccflag) 2071 NFS_INVALIDATE_ATTRCACHE(VTONFS(dvp)); 2072 if (dvp != vp) 2073 VOP_UNLOCK(vp, 0); 2074 VN_KNOTE(vp, NOTE_LINK); 2075 VN_KNOTE(dvp, NOTE_WRITE); 2076 vput(dvp); 2077 /* 2078 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2079 */ 2080 if (rexmit && error == EEXIST) 2081 error = 0; 2082 return (error); 2083 } 2084 2085 /* 2086 * nfs symbolic link create call 2087 */ 2088 int 2089 nfs_symlink(v) 2090 void *v; 2091 { 2092 struct vop_symlink_args /* { 2093 struct vnode *a_dvp; 2094 struct vnode **a_vpp; 2095 struct componentname *a_cnp; 2096 struct vattr *a_vap; 2097 char *a_target; 2098 } */ *ap = v; 2099 struct vnode *dvp = ap->a_dvp; 2100 struct vattr *vap = ap->a_vap; 2101 struct componentname *cnp = ap->a_cnp; 2102 struct nfsv2_sattr *sp; 2103 u_int32_t *tl; 2104 caddr_t cp; 2105 int32_t t1, t2; 2106 caddr_t bpos, dpos, cp2; 2107 int slen, error = 0, wccflag = NFSV3_WCCRATTR, gotvp; 2108 struct mbuf *mreq, *mrep, *md, *mb; 2109 struct vnode *newvp = (struct vnode *)0; 2110 const int v3 = NFS_ISV3(dvp); 2111 int rexmit; 2112 struct nfsnode *dnp = VTONFS(dvp); 2113 2114 *ap->a_vpp = NULL; 2115 nfsstats.rpccnt[NFSPROC_SYMLINK]++; 2116 slen = strlen(ap->a_target); 2117 nfsm_reqhead(dnp, NFSPROC_SYMLINK, NFSX_FH(v3) + 2*NFSX_UNSIGNED + 2118 nfsm_rndup(cnp->cn_namelen) + nfsm_rndup(slen) + NFSX_SATTR(v3)); 2119 nfsm_fhtom(dnp, v3); 2120 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 2121 if (v3) 2122 nfsm_v3attrbuild(vap, FALSE); 2123 nfsm_strtom(ap->a_target, slen, NFS_MAXPATHLEN); 2124 if (!v3) { 2125 nfsm_build(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2126 sp->sa_mode = vtonfsv2_mode(VLNK, vap->va_mode); 2127 sp->sa_uid = nfs_xdrneg1; 2128 sp->sa_gid = nfs_xdrneg1; 2129 sp->sa_size = nfs_xdrneg1; 2130 txdr_nfsv2time(&vap->va_atime, &sp->sa_atime); 2131 txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime); 2132 } 2133 nfsm_request1(dnp, NFSPROC_SYMLINK, cnp->cn_proc, cnp->cn_cred, 2134 &rexmit); 2135 if (v3) { 2136 if (!error) 2137 nfsm_mtofh(dvp, newvp, v3, gotvp); 2138 nfsm_wcc_data(dvp, wccflag, 0); 2139 } 2140 nfsm_reqdone; 2141 /* 2142 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2143 */ 2144 if (rexmit && error == EEXIST) 2145 error = 0; 2146 if (error == 0 && newvp == NULL) { 2147 struct nfsnode *np = NULL; 2148 2149 error = nfs_lookitup(dvp, cnp->cn_nameptr, cnp->cn_namelen, 2150 cnp->cn_cred, cnp->cn_proc, &np); 2151 if (error == 0) 2152 newvp = NFSTOV(np); 2153 } 2154 if (error) { 2155 if (newvp != NULL) 2156 vput(newvp); 2157 } else { 2158 *ap->a_vpp = newvp; 2159 } 2160 PNBUF_PUT(cnp->cn_pnbuf); 2161 VTONFS(dvp)->n_flag |= NMODIFIED; 2162 if (!wccflag) 2163 NFS_INVALIDATE_ATTRCACHE(VTONFS(dvp)); 2164 VN_KNOTE(dvp, NOTE_WRITE); 2165 vput(dvp); 2166 return (error); 2167 } 2168 2169 /* 2170 * nfs make dir call 2171 */ 2172 int 2173 nfs_mkdir(v) 2174 void *v; 2175 { 2176 struct vop_mkdir_args /* { 2177 struct vnode *a_dvp; 2178 struct vnode **a_vpp; 2179 struct componentname *a_cnp; 2180 struct vattr *a_vap; 2181 } */ *ap = v; 2182 struct vnode *dvp = ap->a_dvp; 2183 struct vattr *vap = ap->a_vap; 2184 struct componentname *cnp = ap->a_cnp; 2185 struct nfsv2_sattr *sp; 2186 u_int32_t *tl; 2187 caddr_t cp; 2188 int32_t t1, t2; 2189 int len; 2190 struct nfsnode *dnp = VTONFS(dvp), *np = (struct nfsnode *)0; 2191 struct vnode *newvp = (struct vnode *)0; 2192 caddr_t bpos, dpos, cp2; 2193 int error = 0, wccflag = NFSV3_WCCRATTR; 2194 int gotvp = 0; 2195 int rexmit; 2196 struct mbuf *mreq, *mrep, *md, *mb; 2197 const int v3 = NFS_ISV3(dvp); 2198 2199 len = cnp->cn_namelen; 2200 nfsstats.rpccnt[NFSPROC_MKDIR]++; 2201 nfsm_reqhead(dnp, NFSPROC_MKDIR, 2202 NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(len) + NFSX_SATTR(v3)); 2203 nfsm_fhtom(dnp, v3); 2204 nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN); 2205 if (v3) { 2206 nfsm_v3attrbuild(vap, FALSE); 2207 } else { 2208 nfsm_build(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2209 sp->sa_mode = vtonfsv2_mode(VDIR, vap->va_mode); 2210 sp->sa_uid = nfs_xdrneg1; 2211 sp->sa_gid = nfs_xdrneg1; 2212 sp->sa_size = nfs_xdrneg1; 2213 txdr_nfsv2time(&vap->va_atime, &sp->sa_atime); 2214 txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime); 2215 } 2216 nfsm_request1(dnp, NFSPROC_MKDIR, cnp->cn_proc, cnp->cn_cred, &rexmit); 2217 if (!error) 2218 nfsm_mtofh(dvp, newvp, v3, gotvp); 2219 if (v3) 2220 nfsm_wcc_data(dvp, wccflag, 0); 2221 nfsm_reqdone; 2222 VTONFS(dvp)->n_flag |= NMODIFIED; 2223 if (!wccflag) 2224 NFS_INVALIDATE_ATTRCACHE(VTONFS(dvp)); 2225 /* 2226 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry 2227 * if we can succeed in looking up the directory. 2228 */ 2229 if ((rexmit && error == EEXIST) || (!error && !gotvp)) { 2230 if (newvp) { 2231 vput(newvp); 2232 newvp = (struct vnode *)0; 2233 } 2234 error = nfs_lookitup(dvp, cnp->cn_nameptr, len, cnp->cn_cred, 2235 cnp->cn_proc, &np); 2236 if (!error) { 2237 newvp = NFSTOV(np); 2238 if (newvp->v_type != VDIR) 2239 error = EEXIST; 2240 } 2241 } 2242 if (error) { 2243 if (newvp) 2244 vput(newvp); 2245 } else { 2246 VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); 2247 if (cnp->cn_flags & MAKEENTRY) 2248 nfs_cache_enter(dvp, newvp, cnp); 2249 *ap->a_vpp = newvp; 2250 } 2251 PNBUF_PUT(cnp->cn_pnbuf); 2252 vput(dvp); 2253 return (error); 2254 } 2255 2256 /* 2257 * nfs remove directory call 2258 */ 2259 int 2260 nfs_rmdir(v) 2261 void *v; 2262 { 2263 struct vop_rmdir_args /* { 2264 struct vnode *a_dvp; 2265 struct vnode *a_vp; 2266 struct componentname *a_cnp; 2267 } */ *ap = v; 2268 struct vnode *vp = ap->a_vp; 2269 struct vnode *dvp = ap->a_dvp; 2270 struct componentname *cnp = ap->a_cnp; 2271 u_int32_t *tl; 2272 caddr_t cp; 2273 int32_t t1, t2; 2274 caddr_t bpos, dpos, cp2; 2275 int error = 0, wccflag = NFSV3_WCCRATTR; 2276 int rexmit; 2277 struct mbuf *mreq, *mrep, *md, *mb; 2278 const int v3 = NFS_ISV3(dvp); 2279 struct nfsnode *dnp; 2280 2281 if (dvp == vp) { 2282 vrele(dvp); 2283 vput(dvp); 2284 PNBUF_PUT(cnp->cn_pnbuf); 2285 return (EINVAL); 2286 } 2287 nfsstats.rpccnt[NFSPROC_RMDIR]++; 2288 dnp = VTONFS(dvp); 2289 nfsm_reqhead(dnp, NFSPROC_RMDIR, 2290 NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(cnp->cn_namelen)); 2291 nfsm_fhtom(dnp, v3); 2292 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 2293 nfsm_request1(dnp, NFSPROC_RMDIR, cnp->cn_proc, cnp->cn_cred, &rexmit); 2294 if (v3) 2295 nfsm_wcc_data(dvp, wccflag, 0); 2296 nfsm_reqdone; 2297 PNBUF_PUT(cnp->cn_pnbuf); 2298 VTONFS(dvp)->n_flag |= NMODIFIED; 2299 if (!wccflag) 2300 NFS_INVALIDATE_ATTRCACHE(VTONFS(dvp)); 2301 VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); 2302 VN_KNOTE(vp, NOTE_DELETE); 2303 cache_purge(vp); 2304 vput(vp); 2305 vput(dvp); 2306 /* 2307 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2308 */ 2309 if (rexmit && error == ENOENT) 2310 error = 0; 2311 return (error); 2312 } 2313 2314 /* 2315 * nfs readdir call 2316 */ 2317 int 2318 nfs_readdir(v) 2319 void *v; 2320 { 2321 struct vop_readdir_args /* { 2322 struct vnode *a_vp; 2323 struct uio *a_uio; 2324 struct ucred *a_cred; 2325 int *a_eofflag; 2326 off_t **a_cookies; 2327 int *a_ncookies; 2328 } */ *ap = v; 2329 struct vnode *vp = ap->a_vp; 2330 struct uio *uio = ap->a_uio; 2331 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 2332 char *base = uio->uio_iov->iov_base; 2333 int tresid, error; 2334 size_t count, lost; 2335 struct dirent *dp; 2336 off_t *cookies = NULL; 2337 int ncookies = 0, nc; 2338 2339 if (vp->v_type != VDIR) 2340 return (EPERM); 2341 2342 lost = uio->uio_resid & (NFS_DIRFRAGSIZ - 1); 2343 count = uio->uio_resid - lost; 2344 if (count <= 0) 2345 return (EINVAL); 2346 2347 /* 2348 * Call nfs_bioread() to do the real work. 2349 */ 2350 tresid = uio->uio_resid = count; 2351 error = nfs_bioread(vp, uio, 0, ap->a_cred, 2352 ap->a_cookies ? NFSBIO_CACHECOOKIES : 0); 2353 2354 if (!error && ap->a_cookies) { 2355 ncookies = count / 16; 2356 cookies = malloc(sizeof (off_t) * ncookies, M_TEMP, M_WAITOK); 2357 *ap->a_cookies = cookies; 2358 } 2359 2360 if (!error && uio->uio_resid == tresid) { 2361 uio->uio_resid += lost; 2362 nfsstats.direofcache_misses++; 2363 if (ap->a_cookies) 2364 *ap->a_ncookies = 0; 2365 *ap->a_eofflag = 1; 2366 return (0); 2367 } 2368 2369 if (!error && ap->a_cookies) { 2370 /* 2371 * Only the NFS server and emulations use cookies, and they 2372 * load the directory block into system space, so we can 2373 * just look at it directly. 2374 */ 2375 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 2376 panic("nfs_readdir: lost in space"); 2377 for (nc = 0; ncookies-- && 2378 base < (char *)uio->uio_iov->iov_base; nc++){ 2379 dp = (struct dirent *) base; 2380 if (dp->d_reclen == 0) 2381 break; 2382 if (nmp->nm_flag & NFSMNT_XLATECOOKIE) 2383 *(cookies++) = (off_t)NFS_GETCOOKIE32(dp); 2384 else 2385 *(cookies++) = NFS_GETCOOKIE(dp); 2386 base += dp->d_reclen; 2387 } 2388 uio->uio_resid += 2389 ((caddr_t)uio->uio_iov->iov_base - base); 2390 uio->uio_iov->iov_len += 2391 ((caddr_t)uio->uio_iov->iov_base - base); 2392 uio->uio_iov->iov_base = base; 2393 *ap->a_ncookies = nc; 2394 } 2395 2396 uio->uio_resid += lost; 2397 *ap->a_eofflag = 0; 2398 return (error); 2399 } 2400 2401 /* 2402 * Readdir rpc call. 2403 * Called from below the buffer cache by nfs_doio(). 2404 */ 2405 int 2406 nfs_readdirrpc(vp, uiop, cred) 2407 struct vnode *vp; 2408 struct uio *uiop; 2409 struct ucred *cred; 2410 { 2411 int len, left; 2412 struct dirent *dp = NULL; 2413 u_int32_t *tl; 2414 caddr_t cp; 2415 int32_t t1, t2; 2416 caddr_t bpos, dpos, cp2; 2417 struct mbuf *mreq, *mrep, *md, *mb; 2418 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 2419 struct nfsnode *dnp = VTONFS(vp); 2420 u_quad_t fileno; 2421 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2422 int attrflag, nrpcs = 0, reclen; 2423 const int v3 = NFS_ISV3(vp); 2424 2425 #ifdef DIAGNOSTIC 2426 /* 2427 * Should be called from buffer cache, so only amount of 2428 * NFS_DIRBLKSIZ will be requested. 2429 */ 2430 if (uiop->uio_iovcnt != 1 || uiop->uio_resid != NFS_DIRBLKSIZ) 2431 panic("nfs readdirrpc bad uio"); 2432 #endif 2433 2434 /* 2435 * Loop around doing readdir rpc's of size nm_readdirsize 2436 * truncated to a multiple of NFS_DIRFRAGSIZ. 2437 * The stopping criteria is EOF or buffer full. 2438 */ 2439 while (more_dirs && bigenough) { 2440 /* 2441 * Heuristic: don't bother to do another RPC to further 2442 * fill up this block if there is not much room left. (< 50% 2443 * of the readdir RPC size). This wastes some buffer space 2444 * but can save up to 50% in RPC calls. 2445 */ 2446 if (nrpcs > 0 && uiop->uio_resid < (nmp->nm_readdirsize / 2)) { 2447 bigenough = 0; 2448 break; 2449 } 2450 nfsstats.rpccnt[NFSPROC_READDIR]++; 2451 nfsm_reqhead(dnp, NFSPROC_READDIR, NFSX_FH(v3) + 2452 NFSX_READDIR(v3)); 2453 nfsm_fhtom(dnp, v3); 2454 if (v3) { 2455 nfsm_build(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2456 if (nmp->nm_iflag & NFSMNT_SWAPCOOKIE) { 2457 txdr_swapcookie3(uiop->uio_offset, tl); 2458 } else { 2459 txdr_cookie3(uiop->uio_offset, tl); 2460 } 2461 tl += 2; 2462 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2463 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2464 } else { 2465 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2466 *tl++ = txdr_unsigned(uiop->uio_offset); 2467 } 2468 *tl = txdr_unsigned(nmp->nm_readdirsize); 2469 nfsm_request(dnp, NFSPROC_READDIR, uiop->uio_procp, cred); 2470 nrpcs++; 2471 if (v3) { 2472 nfsm_postop_attr(vp, attrflag, 0); 2473 if (!error) { 2474 nfsm_dissect(tl, u_int32_t *, 2475 2 * NFSX_UNSIGNED); 2476 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2477 dnp->n_cookieverf.nfsuquad[1] = *tl; 2478 } else { 2479 m_freem(mrep); 2480 goto nfsmout; 2481 } 2482 } 2483 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); 2484 more_dirs = fxdr_unsigned(int, *tl); 2485 2486 /* loop thru the dir entries, doctoring them to 4bsd form */ 2487 while (more_dirs && bigenough) { 2488 if (v3) { 2489 nfsm_dissect(tl, u_int32_t *, 2490 3 * NFSX_UNSIGNED); 2491 fileno = fxdr_hyper(tl); 2492 len = fxdr_unsigned(int, *(tl + 2)); 2493 } else { 2494 nfsm_dissect(tl, u_int32_t *, 2495 2 * NFSX_UNSIGNED); 2496 fileno = fxdr_unsigned(u_quad_t, *tl++); 2497 len = fxdr_unsigned(int, *tl); 2498 } 2499 if (len <= 0 || len > NFS_MAXNAMLEN) { 2500 error = EBADRPC; 2501 m_freem(mrep); 2502 goto nfsmout; 2503 } 2504 tlen = nfsm_rndup(len); 2505 if (tlen == len) 2506 tlen += 4; /* To ensure null termination */ 2507 tlen += sizeof (off_t) + sizeof (int); 2508 reclen = ALIGN(tlen + DIRHDSIZ); 2509 tlen = reclen - DIRHDSIZ; 2510 left = NFS_DIRFRAGSIZ - blksiz; 2511 if (reclen > left) { 2512 dp->d_reclen += left; 2513 uiop->uio_iov->iov_base = 2514 (caddr_t)uiop->uio_iov->iov_base + left; 2515 uiop->uio_iov->iov_len -= left; 2516 uiop->uio_resid -= left; 2517 blksiz = 0; 2518 NFS_STASHCOOKIE(dp, uiop->uio_offset); 2519 } 2520 if (reclen > uiop->uio_resid) 2521 bigenough = 0; 2522 if (bigenough) { 2523 dp = (struct dirent *)uiop->uio_iov->iov_base; 2524 dp->d_fileno = (int)fileno; 2525 dp->d_namlen = len; 2526 dp->d_reclen = reclen; 2527 dp->d_type = DT_UNKNOWN; 2528 blksiz += dp->d_reclen; 2529 if (blksiz == NFS_DIRFRAGSIZ) 2530 blksiz = 0; 2531 uiop->uio_resid -= DIRHDSIZ; 2532 uiop->uio_iov->iov_base = 2533 (caddr_t)uiop->uio_iov->iov_base + DIRHDSIZ; 2534 uiop->uio_iov->iov_len -= DIRHDSIZ; 2535 nfsm_mtouio(uiop, len); 2536 cp = uiop->uio_iov->iov_base; 2537 tlen -= len; 2538 *cp = '\0'; /* null terminate */ 2539 uiop->uio_iov->iov_base = 2540 (caddr_t)uiop->uio_iov->iov_base + tlen; 2541 uiop->uio_iov->iov_len -= tlen; 2542 uiop->uio_resid -= tlen; 2543 } else 2544 nfsm_adv(nfsm_rndup(len)); 2545 if (v3) { 2546 nfsm_dissect(tl, u_int32_t *, 2547 3 * NFSX_UNSIGNED); 2548 } else { 2549 nfsm_dissect(tl, u_int32_t *, 2550 2 * NFSX_UNSIGNED); 2551 } 2552 if (bigenough) { 2553 if (v3) { 2554 if (nmp->nm_iflag & NFSMNT_SWAPCOOKIE) 2555 uiop->uio_offset = 2556 fxdr_swapcookie3(tl); 2557 else 2558 uiop->uio_offset = 2559 fxdr_cookie3(tl); 2560 } 2561 else { 2562 uiop->uio_offset = 2563 fxdr_unsigned(off_t, *tl); 2564 } 2565 NFS_STASHCOOKIE(dp, uiop->uio_offset); 2566 } 2567 if (v3) 2568 tl += 2; 2569 else 2570 tl++; 2571 more_dirs = fxdr_unsigned(int, *tl); 2572 } 2573 /* 2574 * If at end of rpc data, get the eof boolean 2575 */ 2576 if (!more_dirs) { 2577 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); 2578 more_dirs = (fxdr_unsigned(int, *tl) == 0); 2579 2580 /* 2581 * kludge: if we got no entries, treat it as EOF. 2582 * some server sometimes send a reply without any 2583 * entries or EOF. 2584 * although it might mean the server has very long name, 2585 * we can't handle such entries anyway. 2586 */ 2587 2588 if (uiop->uio_resid >= NFS_DIRBLKSIZ) 2589 more_dirs = 0; 2590 } 2591 m_freem(mrep); 2592 } 2593 /* 2594 * Fill last record, iff any, out to a multiple of NFS_DIRFRAGSIZ 2595 * by increasing d_reclen for the last record. 2596 */ 2597 if (blksiz > 0) { 2598 left = NFS_DIRFRAGSIZ - blksiz; 2599 dp->d_reclen += left; 2600 NFS_STASHCOOKIE(dp, uiop->uio_offset); 2601 uiop->uio_iov->iov_base = (caddr_t)uiop->uio_iov->iov_base + 2602 left; 2603 uiop->uio_iov->iov_len -= left; 2604 uiop->uio_resid -= left; 2605 } 2606 2607 /* 2608 * We are now either at the end of the directory or have filled the 2609 * block. 2610 */ 2611 if (bigenough) 2612 dnp->n_direofoffset = uiop->uio_offset; 2613 nfsmout: 2614 return (error); 2615 } 2616 2617 /* 2618 * NFS V3 readdir plus RPC. Used in place of nfs_readdirrpc(). 2619 */ 2620 int 2621 nfs_readdirplusrpc(vp, uiop, cred) 2622 struct vnode *vp; 2623 struct uio *uiop; 2624 struct ucred *cred; 2625 { 2626 int len, left; 2627 struct dirent *dp = NULL; 2628 u_int32_t *tl; 2629 caddr_t cp; 2630 int32_t t1, t2; 2631 struct vnode *newvp; 2632 caddr_t bpos, dpos, cp2; 2633 struct mbuf *mreq, *mrep, *md, *mb; 2634 struct nameidata nami, *ndp = &nami; 2635 struct componentname *cnp = &ndp->ni_cnd; 2636 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 2637 struct nfsnode *dnp = VTONFS(vp), *np; 2638 nfsfh_t *fhp; 2639 u_quad_t fileno; 2640 int error = 0, tlen, more_dirs = 1, blksiz = 0, doit, bigenough = 1, i; 2641 int attrflag, fhsize, nrpcs = 0, reclen; 2642 struct nfs_fattr fattr, *fp; 2643 2644 #ifdef DIAGNOSTIC 2645 if (uiop->uio_iovcnt != 1 || uiop->uio_resid != NFS_DIRBLKSIZ) 2646 panic("nfs readdirplusrpc bad uio"); 2647 #endif 2648 ndp->ni_dvp = vp; 2649 newvp = NULLVP; 2650 2651 /* 2652 * Loop around doing readdir rpc's of size nm_readdirsize 2653 * truncated to a multiple of NFS_DIRFRAGSIZ. 2654 * The stopping criteria is EOF or buffer full. 2655 */ 2656 while (more_dirs && bigenough) { 2657 if (nrpcs > 0 && uiop->uio_resid < (nmp->nm_readdirsize / 2)) { 2658 bigenough = 0; 2659 break; 2660 } 2661 nfsstats.rpccnt[NFSPROC_READDIRPLUS]++; 2662 nfsm_reqhead(dnp, NFSPROC_READDIRPLUS, 2663 NFSX_FH(1) + 6 * NFSX_UNSIGNED); 2664 nfsm_fhtom(dnp, 1); 2665 nfsm_build(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 2666 if (nmp->nm_iflag & NFSMNT_SWAPCOOKIE) { 2667 txdr_swapcookie3(uiop->uio_offset, tl); 2668 } else { 2669 txdr_cookie3(uiop->uio_offset, tl); 2670 } 2671 tl += 2; 2672 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2673 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2674 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 2675 *tl = txdr_unsigned(nmp->nm_rsize); 2676 nfsm_request(dnp, NFSPROC_READDIRPLUS, uiop->uio_procp, cred); 2677 nfsm_postop_attr(vp, attrflag, 0); 2678 if (error) { 2679 m_freem(mrep); 2680 goto nfsmout; 2681 } 2682 nrpcs++; 2683 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2684 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2685 dnp->n_cookieverf.nfsuquad[1] = *tl++; 2686 more_dirs = fxdr_unsigned(int, *tl); 2687 2688 /* loop thru the dir entries, doctoring them to 4bsd form */ 2689 while (more_dirs && bigenough) { 2690 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2691 fileno = fxdr_hyper(tl); 2692 len = fxdr_unsigned(int, *(tl + 2)); 2693 if (len <= 0 || len > NFS_MAXNAMLEN) { 2694 error = EBADRPC; 2695 m_freem(mrep); 2696 goto nfsmout; 2697 } 2698 tlen = nfsm_rndup(len); 2699 if (tlen == len) 2700 tlen += 4; /* To ensure null termination*/ 2701 tlen += sizeof (off_t) + sizeof (int); 2702 reclen = ALIGN(tlen + DIRHDSIZ); 2703 tlen = reclen - DIRHDSIZ; 2704 left = NFS_DIRFRAGSIZ - blksiz; 2705 if (reclen > left) { 2706 /* 2707 * DIRFRAGSIZ is aligned, no need to align 2708 * again here. 2709 */ 2710 dp->d_reclen += left; 2711 uiop->uio_iov->iov_base = 2712 (caddr_t)uiop->uio_iov->iov_base + left; 2713 uiop->uio_iov->iov_len -= left; 2714 uiop->uio_resid -= left; 2715 NFS_STASHCOOKIE(dp, uiop->uio_offset); 2716 blksiz = 0; 2717 } 2718 if (reclen > uiop->uio_resid) 2719 bigenough = 0; 2720 if (bigenough) { 2721 dp = (struct dirent *)uiop->uio_iov->iov_base; 2722 dp->d_fileno = (int)fileno; 2723 dp->d_namlen = len; 2724 dp->d_reclen = reclen; 2725 dp->d_type = DT_UNKNOWN; 2726 blksiz += dp->d_reclen; 2727 if (blksiz == NFS_DIRFRAGSIZ) 2728 blksiz = 0; 2729 uiop->uio_resid -= DIRHDSIZ; 2730 uiop->uio_iov->iov_base = 2731 (caddr_t)uiop->uio_iov->iov_base + 2732 DIRHDSIZ; 2733 uiop->uio_iov->iov_len -= DIRHDSIZ; 2734 cnp->cn_nameptr = uiop->uio_iov->iov_base; 2735 cnp->cn_namelen = len; 2736 nfsm_mtouio(uiop, len); 2737 cp = uiop->uio_iov->iov_base; 2738 tlen -= len; 2739 *cp = '\0'; 2740 uiop->uio_iov->iov_base = 2741 (caddr_t)uiop->uio_iov->iov_base + tlen; 2742 uiop->uio_iov->iov_len -= tlen; 2743 uiop->uio_resid -= tlen; 2744 } else 2745 nfsm_adv(nfsm_rndup(len)); 2746 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2747 if (bigenough) { 2748 if (nmp->nm_iflag & NFSMNT_SWAPCOOKIE) 2749 uiop->uio_offset = 2750 fxdr_swapcookie3(tl); 2751 else 2752 uiop->uio_offset = 2753 fxdr_cookie3(tl); 2754 NFS_STASHCOOKIE(dp, uiop->uio_offset); 2755 } 2756 tl += 2; 2757 2758 /* 2759 * Since the attributes are before the file handle 2760 * (sigh), we must skip over the attributes and then 2761 * come back and get them. 2762 */ 2763 attrflag = fxdr_unsigned(int, *tl); 2764 if (attrflag) { 2765 nfsm_dissect(fp, struct nfs_fattr *, NFSX_V3FATTR); 2766 memcpy(&fattr, fp, NFSX_V3FATTR); 2767 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); 2768 doit = fxdr_unsigned(int, *tl); 2769 if (doit) { 2770 nfsm_getfh(fhp, fhsize, 1); 2771 if (NFS_CMPFH(dnp, fhp, fhsize)) { 2772 VREF(vp); 2773 newvp = vp; 2774 np = dnp; 2775 } else { 2776 error = nfs_nget1(vp->v_mount, fhp, 2777 fhsize, &np, LK_NOWAIT); 2778 if (!error) 2779 newvp = NFSTOV(np); 2780 } 2781 if (!error) { 2782 const char *cp; 2783 2784 nfs_loadattrcache(&newvp, &fattr, 0, 0); 2785 dp->d_type = 2786 IFTODT(VTTOIF(np->n_vattr->va_type)); 2787 ndp->ni_vp = newvp; 2788 cp = cnp->cn_nameptr + cnp->cn_namelen; 2789 cnp->cn_hash = 2790 namei_hash(cnp->cn_nameptr, &cp); 2791 if (cnp->cn_namelen <= NCHNAMLEN) { 2792 cache_purge1(ndp->ni_dvp, cnp, 0); 2793 nfs_cache_enter(ndp->ni_dvp, ndp->ni_vp, 2794 cnp); 2795 } 2796 } 2797 } 2798 } else { 2799 /* Just skip over the file handle */ 2800 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); 2801 i = fxdr_unsigned(int, *tl); 2802 nfsm_adv(nfsm_rndup(i)); 2803 } 2804 if (newvp != NULLVP) { 2805 if (newvp == vp) 2806 vrele(newvp); 2807 else 2808 vput(newvp); 2809 newvp = NULLVP; 2810 } 2811 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); 2812 more_dirs = fxdr_unsigned(int, *tl); 2813 } 2814 /* 2815 * If at end of rpc data, get the eof boolean 2816 */ 2817 if (!more_dirs) { 2818 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); 2819 more_dirs = (fxdr_unsigned(int, *tl) == 0); 2820 2821 /* 2822 * kludge: see a comment in nfs_readdirrpc. 2823 */ 2824 2825 if (uiop->uio_resid >= NFS_DIRBLKSIZ) 2826 more_dirs = 0; 2827 } 2828 m_freem(mrep); 2829 } 2830 /* 2831 * Fill last record, iff any, out to a multiple of NFS_DIRFRAGSIZ 2832 * by increasing d_reclen for the last record. 2833 */ 2834 if (blksiz > 0) { 2835 left = NFS_DIRFRAGSIZ - blksiz; 2836 dp->d_reclen += left; 2837 NFS_STASHCOOKIE(dp, uiop->uio_offset); 2838 uiop->uio_iov->iov_base = (caddr_t)uiop->uio_iov->iov_base + 2839 left; 2840 uiop->uio_iov->iov_len -= left; 2841 uiop->uio_resid -= left; 2842 } 2843 2844 /* 2845 * We are now either at the end of the directory or have filled the 2846 * block. 2847 */ 2848 if (bigenough) 2849 dnp->n_direofoffset = uiop->uio_offset; 2850 nfsmout: 2851 if (newvp != NULLVP) { 2852 if(newvp == vp) 2853 vrele(newvp); 2854 else 2855 vput(newvp); 2856 } 2857 return (error); 2858 } 2859 static char hextoasc[] = "0123456789abcdef"; 2860 2861 /* 2862 * Silly rename. To make the NFS filesystem that is stateless look a little 2863 * more like the "ufs" a remove of an active vnode is translated to a rename 2864 * to a funny looking filename that is removed by nfs_inactive on the 2865 * nfsnode. There is the potential for another process on a different client 2866 * to create the same funny name between the nfs_lookitup() fails and the 2867 * nfs_rename() completes, but... 2868 */ 2869 int 2870 nfs_sillyrename(dvp, vp, cnp) 2871 struct vnode *dvp, *vp; 2872 struct componentname *cnp; 2873 { 2874 struct sillyrename *sp; 2875 struct nfsnode *np; 2876 int error; 2877 short pid; 2878 2879 cache_purge(dvp); 2880 np = VTONFS(vp); 2881 #ifndef DIAGNOSTIC 2882 if (vp->v_type == VDIR) 2883 panic("nfs: sillyrename dir"); 2884 #endif 2885 MALLOC(sp, struct sillyrename *, sizeof (struct sillyrename), 2886 M_NFSREQ, M_WAITOK); 2887 sp->s_cred = crdup(cnp->cn_cred); 2888 sp->s_dvp = dvp; 2889 VREF(dvp); 2890 2891 /* Fudge together a funny name */ 2892 pid = cnp->cn_proc->p_pid; 2893 memcpy(sp->s_name, ".nfsAxxxx4.4", 13); 2894 sp->s_namlen = 12; 2895 sp->s_name[8] = hextoasc[pid & 0xf]; 2896 sp->s_name[7] = hextoasc[(pid >> 4) & 0xf]; 2897 sp->s_name[6] = hextoasc[(pid >> 8) & 0xf]; 2898 sp->s_name[5] = hextoasc[(pid >> 12) & 0xf]; 2899 2900 /* Try lookitups until we get one that isn't there */ 2901 while (nfs_lookitup(dvp, sp->s_name, sp->s_namlen, sp->s_cred, 2902 cnp->cn_proc, (struct nfsnode **)0) == 0) { 2903 sp->s_name[4]++; 2904 if (sp->s_name[4] > 'z') { 2905 error = EINVAL; 2906 goto bad; 2907 } 2908 } 2909 error = nfs_renameit(dvp, cnp, sp); 2910 if (error) 2911 goto bad; 2912 error = nfs_lookitup(dvp, sp->s_name, sp->s_namlen, sp->s_cred, 2913 cnp->cn_proc, &np); 2914 np->n_sillyrename = sp; 2915 return (0); 2916 bad: 2917 vrele(sp->s_dvp); 2918 crfree(sp->s_cred); 2919 free((caddr_t)sp, M_NFSREQ); 2920 return (error); 2921 } 2922 2923 /* 2924 * Look up a file name and optionally either update the file handle or 2925 * allocate an nfsnode, depending on the value of npp. 2926 * npp == NULL --> just do the lookup 2927 * *npp == NULL --> allocate a new nfsnode and make sure attributes are 2928 * handled too 2929 * *npp != NULL --> update the file handle in the vnode 2930 */ 2931 int 2932 nfs_lookitup(dvp, name, len, cred, procp, npp) 2933 struct vnode *dvp; 2934 const char *name; 2935 int len; 2936 struct ucred *cred; 2937 struct proc *procp; 2938 struct nfsnode **npp; 2939 { 2940 u_int32_t *tl; 2941 caddr_t cp; 2942 int32_t t1, t2; 2943 struct vnode *newvp = (struct vnode *)0; 2944 struct nfsnode *np, *dnp = VTONFS(dvp); 2945 caddr_t bpos, dpos, cp2; 2946 int error = 0, fhlen, attrflag; 2947 struct mbuf *mreq, *mrep, *md, *mb; 2948 nfsfh_t *nfhp; 2949 const int v3 = NFS_ISV3(dvp); 2950 2951 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 2952 nfsm_reqhead(dnp, NFSPROC_LOOKUP, 2953 NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(len)); 2954 nfsm_fhtom(dnp, v3); 2955 nfsm_strtom(name, len, NFS_MAXNAMLEN); 2956 nfsm_request(dnp, NFSPROC_LOOKUP, procp, cred); 2957 if (npp && !error) { 2958 nfsm_getfh(nfhp, fhlen, v3); 2959 if (*npp) { 2960 np = *npp; 2961 if (np->n_fhsize > NFS_SMALLFH && fhlen <= NFS_SMALLFH) { 2962 free((caddr_t)np->n_fhp, M_NFSBIGFH); 2963 np->n_fhp = &np->n_fh; 2964 } else if (np->n_fhsize <= NFS_SMALLFH && fhlen>NFS_SMALLFH) 2965 np->n_fhp =(nfsfh_t *)malloc(fhlen,M_NFSBIGFH,M_WAITOK); 2966 memcpy((caddr_t)np->n_fhp, (caddr_t)nfhp, fhlen); 2967 np->n_fhsize = fhlen; 2968 newvp = NFSTOV(np); 2969 } else if (NFS_CMPFH(dnp, nfhp, fhlen)) { 2970 VREF(dvp); 2971 newvp = dvp; 2972 } else { 2973 error = nfs_nget(dvp->v_mount, nfhp, fhlen, &np); 2974 if (error) { 2975 m_freem(mrep); 2976 return (error); 2977 } 2978 newvp = NFSTOV(np); 2979 } 2980 if (v3) { 2981 nfsm_postop_attr(newvp, attrflag, 0); 2982 if (!attrflag && *npp == NULL) { 2983 m_freem(mrep); 2984 vput(newvp); 2985 return (ENOENT); 2986 } 2987 } else 2988 nfsm_loadattr(newvp, (struct vattr *)0, 0); 2989 } 2990 nfsm_reqdone; 2991 if (npp && *npp == NULL) { 2992 if (error) { 2993 if (newvp) 2994 vput(newvp); 2995 } else 2996 *npp = np; 2997 } 2998 return (error); 2999 } 3000 3001 /* 3002 * Nfs Version 3 commit rpc 3003 */ 3004 int 3005 nfs_commit(vp, offset, cnt, procp) 3006 struct vnode *vp; 3007 off_t offset; 3008 uint32_t cnt; 3009 struct proc *procp; 3010 { 3011 caddr_t cp; 3012 u_int32_t *tl; 3013 int32_t t1, t2; 3014 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 3015 caddr_t bpos, dpos, cp2; 3016 int error = 0, wccflag = NFSV3_WCCRATTR; 3017 struct mbuf *mreq, *mrep, *md, *mb; 3018 struct nfsnode *np; 3019 3020 KASSERT(NFS_ISV3(vp)); 3021 3022 #ifdef NFS_DEBUG_COMMIT 3023 printf("commit %lu - %lu\n", (unsigned long)offset, 3024 (unsigned long)(offset + cnt)); 3025 #endif 3026 3027 simple_lock(&nmp->nm_slock); 3028 if ((nmp->nm_iflag & NFSMNT_HASWRITEVERF) == 0) { 3029 simple_unlock(&nmp->nm_slock); 3030 return (0); 3031 } 3032 simple_unlock(&nmp->nm_slock); 3033 nfsstats.rpccnt[NFSPROC_COMMIT]++; 3034 np = VTONFS(vp); 3035 nfsm_reqhead(np, NFSPROC_COMMIT, NFSX_FH(1)); 3036 nfsm_fhtom(np, 1); 3037 nfsm_build(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3038 txdr_hyper(offset, tl); 3039 tl += 2; 3040 *tl = txdr_unsigned(cnt); 3041 nfsm_request(np, NFSPROC_COMMIT, procp, np->n_wcred); 3042 nfsm_wcc_data(vp, wccflag, NAC_NOTRUNC); 3043 if (!error) { 3044 nfsm_dissect(tl, u_int32_t *, NFSX_V3WRITEVERF); 3045 simple_lock(&nmp->nm_slock); 3046 if ((nmp->nm_iflag & NFSMNT_STALEWRITEVERF) || 3047 memcmp(nmp->nm_writeverf, tl, NFSX_V3WRITEVERF)) { 3048 memcpy(nmp->nm_writeverf, tl, NFSX_V3WRITEVERF); 3049 error = NFSERR_STALEWRITEVERF; 3050 nmp->nm_iflag |= NFSMNT_STALEWRITEVERF; 3051 } 3052 simple_unlock(&nmp->nm_slock); 3053 } 3054 nfsm_reqdone; 3055 return (error); 3056 } 3057 3058 /* 3059 * Kludge City.. 3060 * - make nfs_bmap() essentially a no-op that does no translation 3061 * - do nfs_strategy() by doing I/O with nfs_readrpc/nfs_writerpc 3062 * (Maybe I could use the process's page mapping, but I was concerned that 3063 * Kernel Write might not be enabled and also figured copyout() would do 3064 * a lot more work than memcpy() and also it currently happens in the 3065 * context of the swapper process (2). 3066 */ 3067 int 3068 nfs_bmap(v) 3069 void *v; 3070 { 3071 struct vop_bmap_args /* { 3072 struct vnode *a_vp; 3073 daddr_t a_bn; 3074 struct vnode **a_vpp; 3075 daddr_t *a_bnp; 3076 int *a_runp; 3077 } */ *ap = v; 3078 struct vnode *vp = ap->a_vp; 3079 int bshift = vp->v_mount->mnt_fs_bshift - vp->v_mount->mnt_dev_bshift; 3080 3081 if (ap->a_vpp != NULL) 3082 *ap->a_vpp = vp; 3083 if (ap->a_bnp != NULL) 3084 *ap->a_bnp = ap->a_bn << bshift; 3085 if (ap->a_runp != NULL) 3086 *ap->a_runp = 1024 * 1024; /* XXX */ 3087 return (0); 3088 } 3089 3090 /* 3091 * Strategy routine. 3092 * For async requests when nfsiod(s) are running, queue the request by 3093 * calling nfs_asyncio(), otherwise just all nfs_doio() to do the 3094 * request. 3095 */ 3096 int 3097 nfs_strategy(v) 3098 void *v; 3099 { 3100 struct vop_strategy_args *ap = v; 3101 struct buf *bp = ap->a_bp; 3102 struct proc *p; 3103 int error = 0; 3104 3105 if ((bp->b_flags & (B_PHYS|B_ASYNC)) == (B_PHYS|B_ASYNC)) 3106 panic("nfs physio/async"); 3107 if (bp->b_flags & B_ASYNC) 3108 p = NULL; 3109 else 3110 p = curproc; /* XXX */ 3111 3112 /* 3113 * If the op is asynchronous and an i/o daemon is waiting 3114 * queue the request, wake it up and wait for completion 3115 * otherwise just do it ourselves. 3116 */ 3117 3118 if ((bp->b_flags & B_ASYNC) == 0 || 3119 nfs_asyncio(bp)) 3120 error = nfs_doio(bp, p); 3121 return (error); 3122 } 3123 3124 /* 3125 * fsync vnode op. Just call nfs_flush() with commit == 1. 3126 */ 3127 /* ARGSUSED */ 3128 int 3129 nfs_fsync(v) 3130 void *v; 3131 { 3132 struct vop_fsync_args /* { 3133 struct vnodeop_desc *a_desc; 3134 struct vnode * a_vp; 3135 struct ucred * a_cred; 3136 int a_flags; 3137 off_t offlo; 3138 off_t offhi; 3139 struct proc * a_p; 3140 } */ *ap = v; 3141 3142 struct vnode *vp = ap->a_vp; 3143 3144 if (vp->v_type != VREG) 3145 return 0; 3146 3147 return (nfs_flush(vp, ap->a_cred, 3148 (ap->a_flags & FSYNC_WAIT) != 0 ? MNT_WAIT : 0, ap->a_p, 1)); 3149 } 3150 3151 /* 3152 * Flush all the data associated with a vnode. 3153 */ 3154 int 3155 nfs_flush(vp, cred, waitfor, p, commit) 3156 struct vnode *vp; 3157 struct ucred *cred; 3158 int waitfor; 3159 struct proc *p; 3160 int commit; 3161 { 3162 struct nfsnode *np = VTONFS(vp); 3163 int error; 3164 int flushflags = PGO_ALLPAGES|PGO_CLEANIT|PGO_SYNCIO; 3165 UVMHIST_FUNC("nfs_flush"); UVMHIST_CALLED(ubchist); 3166 3167 simple_lock(&vp->v_interlock); 3168 error = VOP_PUTPAGES(vp, 0, 0, flushflags); 3169 if (np->n_flag & NWRITEERR) { 3170 error = np->n_error; 3171 np->n_flag &= ~NWRITEERR; 3172 } 3173 UVMHIST_LOG(ubchist, "returning %d", error,0,0,0); 3174 return (error); 3175 } 3176 3177 /* 3178 * Return POSIX pathconf information applicable to nfs. 3179 * 3180 * N.B. The NFS V2 protocol doesn't support this RPC. 3181 */ 3182 /* ARGSUSED */ 3183 int 3184 nfs_pathconf(v) 3185 void *v; 3186 { 3187 struct vop_pathconf_args /* { 3188 struct vnode *a_vp; 3189 int a_name; 3190 register_t *a_retval; 3191 } */ *ap = v; 3192 struct nfsv3_pathconf *pcp; 3193 struct vnode *vp = ap->a_vp; 3194 struct mbuf *mreq, *mrep, *md, *mb; 3195 int32_t t1, t2; 3196 u_int32_t *tl; 3197 caddr_t bpos, dpos, cp, cp2; 3198 int error = 0, attrflag; 3199 #ifndef NFS_V2_ONLY 3200 struct nfsmount *nmp; 3201 unsigned int l; 3202 u_int64_t maxsize; 3203 #endif 3204 const int v3 = NFS_ISV3(vp); 3205 struct nfsnode *np = VTONFS(vp); 3206 3207 switch (ap->a_name) { 3208 /* Names that can be resolved locally. */ 3209 case _PC_PIPE_BUF: 3210 *ap->a_retval = PIPE_BUF; 3211 break; 3212 case _PC_SYNC_IO: 3213 *ap->a_retval = 1; 3214 break; 3215 /* Names that cannot be resolved locally; do an RPC, if possible. */ 3216 case _PC_LINK_MAX: 3217 case _PC_NAME_MAX: 3218 case _PC_CHOWN_RESTRICTED: 3219 case _PC_NO_TRUNC: 3220 if (!v3) { 3221 error = EINVAL; 3222 break; 3223 } 3224 nfsstats.rpccnt[NFSPROC_PATHCONF]++; 3225 nfsm_reqhead(np, NFSPROC_PATHCONF, NFSX_FH(1)); 3226 nfsm_fhtom(np, 1); 3227 nfsm_request(np, NFSPROC_PATHCONF, 3228 curproc, curproc->p_ucred); /* XXX */ 3229 nfsm_postop_attr(vp, attrflag, 0); 3230 if (!error) { 3231 nfsm_dissect(pcp, struct nfsv3_pathconf *, 3232 NFSX_V3PATHCONF); 3233 switch (ap->a_name) { 3234 case _PC_LINK_MAX: 3235 *ap->a_retval = 3236 fxdr_unsigned(register_t, pcp->pc_linkmax); 3237 break; 3238 case _PC_NAME_MAX: 3239 *ap->a_retval = 3240 fxdr_unsigned(register_t, pcp->pc_namemax); 3241 break; 3242 case _PC_CHOWN_RESTRICTED: 3243 *ap->a_retval = 3244 (pcp->pc_chownrestricted == nfs_true); 3245 break; 3246 case _PC_NO_TRUNC: 3247 *ap->a_retval = 3248 (pcp->pc_notrunc == nfs_true); 3249 break; 3250 } 3251 } 3252 nfsm_reqdone; 3253 break; 3254 case _PC_FILESIZEBITS: 3255 #ifndef NFS_V2_ONLY 3256 if (v3) { 3257 nmp = VFSTONFS(vp->v_mount); 3258 if ((nmp->nm_iflag & NFSMNT_GOTFSINFO) == 0) 3259 if ((error = nfs_fsinfo(nmp, vp, 3260 curproc->p_ucred, curproc)) != 0) /* XXX */ 3261 break; 3262 for (l = 0, maxsize = nmp->nm_maxfilesize; 3263 (maxsize >> l) > 0; l++) 3264 ; 3265 *ap->a_retval = l + 1; 3266 } else 3267 #endif 3268 { 3269 *ap->a_retval = 32; /* NFS V2 limitation */ 3270 } 3271 break; 3272 default: 3273 error = EINVAL; 3274 break; 3275 } 3276 3277 return (error); 3278 } 3279 3280 /* 3281 * NFS advisory byte-level locks. 3282 */ 3283 int 3284 nfs_advlock(v) 3285 void *v; 3286 { 3287 struct vop_advlock_args /* { 3288 struct vnode *a_vp; 3289 caddr_t a_id; 3290 int a_op; 3291 struct flock *a_fl; 3292 int a_flags; 3293 } */ *ap = v; 3294 struct nfsnode *np = VTONFS(ap->a_vp); 3295 3296 return lf_advlock(ap, &np->n_lockf, np->n_size); 3297 } 3298 3299 /* 3300 * Print out the contents of an nfsnode. 3301 */ 3302 int 3303 nfs_print(v) 3304 void *v; 3305 { 3306 struct vop_print_args /* { 3307 struct vnode *a_vp; 3308 } */ *ap = v; 3309 struct vnode *vp = ap->a_vp; 3310 struct nfsnode *np = VTONFS(vp); 3311 3312 printf("tag VT_NFS, fileid %ld fsid 0x%lx", 3313 np->n_vattr->va_fileid, np->n_vattr->va_fsid); 3314 if (vp->v_type == VFIFO) 3315 fifo_printinfo(vp); 3316 printf("\n"); 3317 return (0); 3318 } 3319 3320 /* 3321 * NFS file truncation. 3322 */ 3323 int 3324 nfs_truncate(v) 3325 void *v; 3326 { 3327 #if 0 3328 struct vop_truncate_args /* { 3329 struct vnode *a_vp; 3330 off_t a_length; 3331 int a_flags; 3332 struct ucred *a_cred; 3333 struct proc *a_p; 3334 } */ *ap = v; 3335 #endif 3336 3337 /* Use nfs_setattr */ 3338 return (EOPNOTSUPP); 3339 } 3340 3341 /* 3342 * NFS update. 3343 */ 3344 int 3345 nfs_update(v) 3346 void *v; 3347 #if 0 3348 struct vop_update_args /* { 3349 struct vnode *a_vp; 3350 struct timespec *a_ta; 3351 struct timespec *a_tm; 3352 int a_waitfor; 3353 } */ *ap = v; 3354 #endif 3355 { 3356 3357 /* Use nfs_setattr */ 3358 return (EOPNOTSUPP); 3359 } 3360 3361 /* 3362 * Just call bwrite(). 3363 */ 3364 int 3365 nfs_bwrite(v) 3366 void *v; 3367 { 3368 struct vop_bwrite_args /* { 3369 struct vnode *a_bp; 3370 } */ *ap = v; 3371 3372 return (bwrite(ap->a_bp)); 3373 } 3374 3375 /* 3376 * nfs unlock wrapper. 3377 */ 3378 int 3379 nfs_unlock(void *v) 3380 { 3381 struct vop_unlock_args /* { 3382 struct vnode *a_vp; 3383 int a_flags; 3384 } */ *ap = v; 3385 struct vnode *vp = ap->a_vp; 3386 3387 /* 3388 * VOP_UNLOCK can be called by nfs_loadattrcache 3389 * with v_data == 0. 3390 */ 3391 if (VTONFS(vp)) { 3392 nfs_delayedtruncate(vp); 3393 } 3394 3395 return genfs_unlock(v); 3396 } 3397 3398 /* 3399 * nfs special file access vnode op. 3400 * Essentially just get vattr and then imitate iaccess() since the device is 3401 * local to the client. 3402 */ 3403 int 3404 nfsspec_access(v) 3405 void *v; 3406 { 3407 struct vop_access_args /* { 3408 struct vnode *a_vp; 3409 int a_mode; 3410 struct ucred *a_cred; 3411 struct proc *a_p; 3412 } */ *ap = v; 3413 struct vattr va; 3414 struct vnode *vp = ap->a_vp; 3415 int error; 3416 3417 error = VOP_GETATTR(vp, &va, ap->a_cred, ap->a_p); 3418 if (error) 3419 return (error); 3420 3421 /* 3422 * Disallow write attempts on filesystems mounted read-only; 3423 * unless the file is a socket, fifo, or a block or character 3424 * device resident on the filesystem. 3425 */ 3426 if ((ap->a_mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) { 3427 switch (vp->v_type) { 3428 case VREG: 3429 case VDIR: 3430 case VLNK: 3431 return (EROFS); 3432 default: 3433 break; 3434 } 3435 } 3436 3437 return (vaccess(va.va_type, va.va_mode, 3438 va.va_uid, va.va_gid, ap->a_mode, ap->a_cred)); 3439 } 3440 3441 /* 3442 * Read wrapper for special devices. 3443 */ 3444 int 3445 nfsspec_read(v) 3446 void *v; 3447 { 3448 struct vop_read_args /* { 3449 struct vnode *a_vp; 3450 struct uio *a_uio; 3451 int a_ioflag; 3452 struct ucred *a_cred; 3453 } */ *ap = v; 3454 struct nfsnode *np = VTONFS(ap->a_vp); 3455 3456 /* 3457 * Set access flag. 3458 */ 3459 np->n_flag |= NACC; 3460 np->n_atim.tv_sec = time.tv_sec; 3461 np->n_atim.tv_nsec = time.tv_usec * 1000; 3462 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_read), ap)); 3463 } 3464 3465 /* 3466 * Write wrapper for special devices. 3467 */ 3468 int 3469 nfsspec_write(v) 3470 void *v; 3471 { 3472 struct vop_write_args /* { 3473 struct vnode *a_vp; 3474 struct uio *a_uio; 3475 int a_ioflag; 3476 struct ucred *a_cred; 3477 } */ *ap = v; 3478 struct nfsnode *np = VTONFS(ap->a_vp); 3479 3480 /* 3481 * Set update flag. 3482 */ 3483 np->n_flag |= NUPD; 3484 np->n_mtim.tv_sec = time.tv_sec; 3485 np->n_mtim.tv_nsec = time.tv_usec * 1000; 3486 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_write), ap)); 3487 } 3488 3489 /* 3490 * Close wrapper for special devices. 3491 * 3492 * Update the times on the nfsnode then do device close. 3493 */ 3494 int 3495 nfsspec_close(v) 3496 void *v; 3497 { 3498 struct vop_close_args /* { 3499 struct vnode *a_vp; 3500 int a_fflag; 3501 struct ucred *a_cred; 3502 struct proc *a_p; 3503 } */ *ap = v; 3504 struct vnode *vp = ap->a_vp; 3505 struct nfsnode *np = VTONFS(vp); 3506 struct vattr vattr; 3507 3508 if (np->n_flag & (NACC | NUPD)) { 3509 np->n_flag |= NCHG; 3510 if (vp->v_usecount == 1 && 3511 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 3512 VATTR_NULL(&vattr); 3513 if (np->n_flag & NACC) 3514 vattr.va_atime = np->n_atim; 3515 if (np->n_flag & NUPD) 3516 vattr.va_mtime = np->n_mtim; 3517 (void)VOP_SETATTR(vp, &vattr, ap->a_cred, ap->a_p); 3518 } 3519 } 3520 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_close), ap)); 3521 } 3522 3523 /* 3524 * Read wrapper for fifos. 3525 */ 3526 int 3527 nfsfifo_read(v) 3528 void *v; 3529 { 3530 struct vop_read_args /* { 3531 struct vnode *a_vp; 3532 struct uio *a_uio; 3533 int a_ioflag; 3534 struct ucred *a_cred; 3535 } */ *ap = v; 3536 struct nfsnode *np = VTONFS(ap->a_vp); 3537 3538 /* 3539 * Set access flag. 3540 */ 3541 np->n_flag |= NACC; 3542 np->n_atim.tv_sec = time.tv_sec; 3543 np->n_atim.tv_nsec = time.tv_usec * 1000; 3544 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), ap)); 3545 } 3546 3547 /* 3548 * Write wrapper for fifos. 3549 */ 3550 int 3551 nfsfifo_write(v) 3552 void *v; 3553 { 3554 struct vop_write_args /* { 3555 struct vnode *a_vp; 3556 struct uio *a_uio; 3557 int a_ioflag; 3558 struct ucred *a_cred; 3559 } */ *ap = v; 3560 struct nfsnode *np = VTONFS(ap->a_vp); 3561 3562 /* 3563 * Set update flag. 3564 */ 3565 np->n_flag |= NUPD; 3566 np->n_mtim.tv_sec = time.tv_sec; 3567 np->n_mtim.tv_nsec = time.tv_usec * 1000; 3568 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), ap)); 3569 } 3570 3571 /* 3572 * Close wrapper for fifos. 3573 * 3574 * Update the times on the nfsnode then do fifo close. 3575 */ 3576 int 3577 nfsfifo_close(v) 3578 void *v; 3579 { 3580 struct vop_close_args /* { 3581 struct vnode *a_vp; 3582 int a_fflag; 3583 struct ucred *a_cred; 3584 struct proc *a_p; 3585 } */ *ap = v; 3586 struct vnode *vp = ap->a_vp; 3587 struct nfsnode *np = VTONFS(vp); 3588 struct vattr vattr; 3589 3590 if (np->n_flag & (NACC | NUPD)) { 3591 if (np->n_flag & NACC) { 3592 np->n_atim.tv_sec = time.tv_sec; 3593 np->n_atim.tv_nsec = time.tv_usec * 1000; 3594 } 3595 if (np->n_flag & NUPD) { 3596 np->n_mtim.tv_sec = time.tv_sec; 3597 np->n_mtim.tv_nsec = time.tv_usec * 1000; 3598 } 3599 np->n_flag |= NCHG; 3600 if (vp->v_usecount == 1 && 3601 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 3602 VATTR_NULL(&vattr); 3603 if (np->n_flag & NACC) 3604 vattr.va_atime = np->n_atim; 3605 if (np->n_flag & NUPD) 3606 vattr.va_mtime = np->n_mtim; 3607 (void)VOP_SETATTR(vp, &vattr, ap->a_cred, ap->a_p); 3608 } 3609 } 3610 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_close), ap)); 3611 } 3612
Indexes created Sun Oct 19 02:09:48 GMT 2025