1 /* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * %sccs.include.redist.c% 9 * 10 * @(#)nfs_vnops.c 8.8 (Berkeley) 08/05/94 11 */ 12 13 /* 14 * vnode op calls for sun nfs version 2 15 */ 16 17 #include <sys/param.h> 18 #include <sys/proc.h> 19 #include <sys/kernel.h> 20 #include <sys/systm.h> 21 #include <sys/mount.h> 22 #include <sys/buf.h> 23 #include <sys/malloc.h> 24 #include <sys/mbuf.h> 25 #include <sys/conf.h> 26 #include <sys/namei.h> 27 #include <sys/vnode.h> 28 #include <sys/map.h> 29 #include <sys/dirent.h> 30 31 #include <vm/vm.h> 32 33 #include <miscfs/specfs/specdev.h> 34 #include <miscfs/fifofs/fifo.h> 35 36 #include <nfs/rpcv2.h> 37 #include <nfs/nfsv2.h> 38 #include <nfs/nfs.h> 39 #include <nfs/nfsnode.h> 40 #include <nfs/nfsmount.h> 41 #include <nfs/xdr_subs.h> 42 #include <nfs/nfsm_subs.h> 43 #include <nfs/nqnfs.h> 44 45 /* Defs */ 46 #define TRUE 1 47 #define FALSE 0 48 49 /* 50 * Global vfs data structures for nfs 51 */ 52 int (**nfsv2_vnodeop_p)(); 53 struct vnodeopv_entry_desc nfsv2_vnodeop_entries[] = { 54 { &vop_default_desc, vn_default_error }, 55 { &vop_lookup_desc, nfs_lookup }, /* lookup */ 56 { &vop_create_desc, nfs_create }, /* create */ 57 { &vop_mknod_desc, nfs_mknod }, /* mknod */ 58 { &vop_open_desc, nfs_open }, /* open */ 59 { &vop_close_desc, nfs_close }, /* close */ 60 { &vop_access_desc, nfs_access }, /* access */ 61 { &vop_getattr_desc, nfs_getattr }, /* getattr */ 62 { &vop_setattr_desc, nfs_setattr }, /* setattr */ 63 { &vop_read_desc, nfs_read }, /* read */ 64 { &vop_write_desc, nfs_write }, /* write */ 65 { &vop_ioctl_desc, nfs_ioctl }, /* ioctl */ 66 { &vop_select_desc, nfs_select }, /* select */ 67 { &vop_mmap_desc, nfs_mmap }, /* mmap */ 68 { &vop_fsync_desc, nfs_fsync }, /* fsync */ 69 { &vop_seek_desc, nfs_seek }, /* seek */ 70 { &vop_remove_desc, nfs_remove }, /* remove */ 71 { &vop_link_desc, nfs_link }, /* link */ 72 { &vop_rename_desc, nfs_rename }, /* rename */ 73 { &vop_mkdir_desc, nfs_mkdir }, /* mkdir */ 74 { &vop_rmdir_desc, nfs_rmdir }, /* rmdir */ 75 { &vop_symlink_desc, nfs_symlink }, /* symlink */ 76 { &vop_readdir_desc, nfs_readdir }, /* readdir */ 77 { &vop_readlink_desc, nfs_readlink }, /* readlink */ 78 { &vop_abortop_desc, nfs_abortop }, /* abortop */ 79 { &vop_inactive_desc, nfs_inactive }, /* inactive */ 80 { &vop_reclaim_desc, nfs_reclaim }, /* reclaim */ 81 { &vop_lock_desc, nfs_lock }, /* lock */ 82 { &vop_unlock_desc, nfs_unlock }, /* unlock */ 83 { &vop_bmap_desc, nfs_bmap }, /* bmap */ 84 { &vop_strategy_desc, nfs_strategy }, /* strategy */ 85 { &vop_print_desc, nfs_print }, /* print */ 86 { &vop_islocked_desc, nfs_islocked }, /* islocked */ 87 { &vop_pathconf_desc, nfs_pathconf }, /* pathconf */ 88 { &vop_advlock_desc, nfs_advlock }, /* advlock */ 89 { &vop_blkatoff_desc, nfs_blkatoff }, /* blkatoff */ 90 { &vop_valloc_desc, nfs_valloc }, /* valloc */ 91 { &vop_reallocblks_desc, nfs_reallocblks }, /* reallocblks */ 92 { &vop_vfree_desc, nfs_vfree }, /* vfree */ 93 { &vop_truncate_desc, nfs_truncate }, /* truncate */ 94 { &vop_update_desc, nfs_update }, /* update */ 95 { &vop_bwrite_desc, vn_bwrite }, 96 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 97 }; 98 struct vnodeopv_desc nfsv2_vnodeop_opv_desc = 99 { &nfsv2_vnodeop_p, nfsv2_vnodeop_entries }; 100 101 /* 102 * Special device vnode ops 103 */ 104 int (**spec_nfsv2nodeop_p)(); 105 struct vnodeopv_entry_desc spec_nfsv2nodeop_entries[] = { 106 { &vop_default_desc, vn_default_error }, 107 { &vop_lookup_desc, spec_lookup }, /* lookup */ 108 { &vop_create_desc, spec_create }, /* create */ 109 { &vop_mknod_desc, spec_mknod }, /* mknod */ 110 { &vop_open_desc, spec_open }, /* open */ 111 { &vop_close_desc, nfsspec_close }, /* close */ 112 { &vop_access_desc, nfsspec_access }, /* access */ 113 { &vop_getattr_desc, nfs_getattr }, /* getattr */ 114 { &vop_setattr_desc, nfs_setattr }, /* setattr */ 115 { &vop_read_desc, nfsspec_read }, /* read */ 116 { &vop_write_desc, nfsspec_write }, /* write */ 117 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 118 { &vop_select_desc, spec_select }, /* select */ 119 { &vop_mmap_desc, spec_mmap }, /* mmap */ 120 { &vop_fsync_desc, nfs_fsync }, /* fsync */ 121 { &vop_seek_desc, spec_seek }, /* seek */ 122 { &vop_remove_desc, spec_remove }, /* remove */ 123 { &vop_link_desc, spec_link }, /* link */ 124 { &vop_rename_desc, spec_rename }, /* rename */ 125 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 126 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 127 { &vop_symlink_desc, spec_symlink }, /* symlink */ 128 { &vop_readdir_desc, spec_readdir }, /* readdir */ 129 { &vop_readlink_desc, spec_readlink }, /* readlink */ 130 { &vop_abortop_desc, spec_abortop }, /* abortop */ 131 { &vop_inactive_desc, nfs_inactive }, /* inactive */ 132 { &vop_reclaim_desc, nfs_reclaim }, /* reclaim */ 133 { &vop_lock_desc, nfs_lock }, /* lock */ 134 { &vop_unlock_desc, nfs_unlock }, /* unlock */ 135 { &vop_bmap_desc, spec_bmap }, /* bmap */ 136 { &vop_strategy_desc, spec_strategy }, /* strategy */ 137 { &vop_print_desc, nfs_print }, /* print */ 138 { &vop_islocked_desc, nfs_islocked }, /* islocked */ 139 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 140 { &vop_advlock_desc, spec_advlock }, /* advlock */ 141 { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ 142 { &vop_valloc_desc, spec_valloc }, /* valloc */ 143 { &vop_reallocblks_desc, spec_reallocblks }, /* reallocblks */ 144 { &vop_vfree_desc, spec_vfree }, /* vfree */ 145 { &vop_truncate_desc, spec_truncate }, /* truncate */ 146 { &vop_update_desc, nfs_update }, /* update */ 147 { &vop_bwrite_desc, vn_bwrite }, 148 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 149 }; 150 struct vnodeopv_desc spec_nfsv2nodeop_opv_desc = 151 { &spec_nfsv2nodeop_p, spec_nfsv2nodeop_entries }; 152 153 #ifdef FIFO 154 int (**fifo_nfsv2nodeop_p)(); 155 struct vnodeopv_entry_desc fifo_nfsv2nodeop_entries[] = { 156 { &vop_default_desc, vn_default_error }, 157 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 158 { &vop_create_desc, fifo_create }, /* create */ 159 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 160 { &vop_open_desc, fifo_open }, /* open */ 161 { &vop_close_desc, nfsfifo_close }, /* close */ 162 { &vop_access_desc, nfsspec_access }, /* access */ 163 { &vop_getattr_desc, nfs_getattr }, /* getattr */ 164 { &vop_setattr_desc, nfs_setattr }, /* setattr */ 165 { &vop_read_desc, nfsfifo_read }, /* read */ 166 { &vop_write_desc, nfsfifo_write }, /* write */ 167 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 168 { &vop_select_desc, fifo_select }, /* select */ 169 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 170 { &vop_fsync_desc, nfs_fsync }, /* fsync */ 171 { &vop_seek_desc, fifo_seek }, /* seek */ 172 { &vop_remove_desc, fifo_remove }, /* remove */ 173 { &vop_link_desc, fifo_link }, /* link */ 174 { &vop_rename_desc, fifo_rename }, /* rename */ 175 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 176 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 177 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 178 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 179 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 180 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 181 { &vop_inactive_desc, nfs_inactive }, /* inactive */ 182 { &vop_reclaim_desc, nfs_reclaim }, /* reclaim */ 183 { &vop_lock_desc, nfs_lock }, /* lock */ 184 { &vop_unlock_desc, nfs_unlock }, /* unlock */ 185 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 186 { &vop_strategy_desc, fifo_badop }, /* strategy */ 187 { &vop_print_desc, nfs_print }, /* print */ 188 { &vop_islocked_desc, nfs_islocked }, /* islocked */ 189 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 190 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 191 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 192 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 193 { &vop_reallocblks_desc, fifo_reallocblks }, /* reallocblks */ 194 { &vop_vfree_desc, fifo_vfree }, /* vfree */ 195 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 196 { &vop_update_desc, nfs_update }, /* update */ 197 { &vop_bwrite_desc, vn_bwrite }, 198 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 199 }; 200 struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc = 201 { &fifo_nfsv2nodeop_p, fifo_nfsv2nodeop_entries }; 202 #endif /* FIFO */ 203 204 void nqnfs_clientlease(); 205 206 /* 207 * Global variables 208 */ 209 extern u_long nfs_procids[NFS_NPROCS]; 210 extern u_long nfs_prog, nfs_vers, nfs_true, nfs_false; 211 extern char nfsiobuf[MAXPHYS+NBPG]; 212 struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON]; 213 int nfs_numasync = 0; 214 #define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1)) 215 216 /* 217 * nfs null call from vfs. 218 */ 219 int 220 nfs_null(vp, cred, procp) 221 struct vnode *vp; 222 struct ucred *cred; 223 struct proc *procp; 224 { 225 caddr_t bpos, dpos; 226 int error = 0; 227 struct mbuf *mreq, *mrep, *md, *mb; 228 229 nfsm_reqhead(vp, NFSPROC_NULL, 0); 230 nfsm_request(vp, NFSPROC_NULL, procp, cred); 231 nfsm_reqdone; 232 return (error); 233 } 234 235 /* 236 * nfs access vnode op. 237 * For nfs, just return ok. File accesses may fail later. 238 * For nqnfs, use the access rpc to check accessibility. If file modes are 239 * changed on the server, accesses might still fail later. 240 */ 241 int 242 nfs_access(ap) 243 struct vop_access_args /* { 244 struct vnode *a_vp; 245 int a_mode; 246 struct ucred *a_cred; 247 struct proc *a_p; 248 } */ *ap; 249 { 250 register struct vnode *vp = ap->a_vp; 251 register u_long *tl; 252 register caddr_t cp; 253 caddr_t bpos, dpos; 254 int error = 0; 255 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 256 257 /* 258 * For nqnfs, do an access rpc, otherwise you are stuck emulating 259 * ufs_access() locally using the vattr. This may not be correct, 260 * since the server may apply other access criteria such as 261 * client uid-->server uid mapping that we do not know about, but 262 * this is better than just returning anything that is lying about 263 * in the cache. 264 */ 265 if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) { 266 nfsstats.rpccnt[NQNFSPROC_ACCESS]++; 267 nfsm_reqhead(vp, NQNFSPROC_ACCESS, NFSX_FH + 3 * NFSX_UNSIGNED); 268 nfsm_fhtom(vp); 269 nfsm_build(tl, u_long *, 3 * NFSX_UNSIGNED); 270 if (ap->a_mode & VREAD) 271 *tl++ = nfs_true; 272 else 273 *tl++ = nfs_false; 274 if (ap->a_mode & VWRITE) 275 *tl++ = nfs_true; 276 else 277 *tl++ = nfs_false; 278 if (ap->a_mode & VEXEC) 279 *tl = nfs_true; 280 else 281 *tl = nfs_false; 282 nfsm_request(vp, NQNFSPROC_ACCESS, ap->a_p, ap->a_cred); 283 nfsm_reqdone; 284 return (error); 285 } else 286 return (nfsspec_access(ap)); 287 } 288 289 /* 290 * nfs open vnode op 291 * Check to see if the type is ok 292 * and that deletion is not in progress. 293 * For paged in text files, you will need to flush the page cache 294 * if consistency is lost. 295 */ 296 /* ARGSUSED */ 297 int 298 nfs_open(ap) 299 struct vop_open_args /* { 300 struct vnode *a_vp; 301 int a_mode; 302 struct ucred *a_cred; 303 struct proc *a_p; 304 } */ *ap; 305 { 306 register struct vnode *vp = ap->a_vp; 307 struct nfsnode *np = VTONFS(vp); 308 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 309 struct vattr vattr; 310 int error; 311 312 if (vp->v_type != VREG && vp->v_type != VDIR && vp->v_type != VLNK) 313 return (EACCES); 314 if (vp->v_flag & VTEXT) { 315 /* 316 * Get a valid lease. If cached data is stale, flush it. 317 */ 318 if (nmp->nm_flag & NFSMNT_NQNFS) { 319 if (NQNFS_CKINVALID(vp, np, NQL_READ)) { 320 do { 321 error = nqnfs_getlease(vp, NQL_READ, ap->a_cred, ap->a_p); 322 } while (error == NQNFS_EXPIRED); 323 if (error) 324 return (error); 325 if (np->n_lrev != np->n_brev || 326 (np->n_flag & NQNFSNONCACHE)) { 327 if ((error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, 328 ap->a_p, 1)) == EINTR) 329 return (error); 330 (void) vnode_pager_uncache(vp); 331 np->n_brev = np->n_lrev; 332 } 333 } 334 } else { 335 if (np->n_flag & NMODIFIED) { 336 if ((error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, 337 ap->a_p, 1)) == EINTR) 338 return (error); 339 (void) vnode_pager_uncache(vp); 340 np->n_attrstamp = 0; 341 np->n_direofoffset = 0; 342 if (error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p)) 343 return (error); 344 np->n_mtime = vattr.va_mtime.ts_sec; 345 } else { 346 if (error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p)) 347 return (error); 348 if (np->n_mtime != vattr.va_mtime.ts_sec) { 349 np->n_direofoffset = 0; 350 if ((error = nfs_vinvalbuf(vp, V_SAVE, 351 ap->a_cred, ap->a_p, 1)) == EINTR) 352 return (error); 353 (void) vnode_pager_uncache(vp); 354 np->n_mtime = vattr.va_mtime.ts_sec; 355 } 356 } 357 } 358 } else if ((nmp->nm_flag & NFSMNT_NQNFS) == 0) 359 np->n_attrstamp = 0; /* For Open/Close consistency */ 360 return (0); 361 } 362 363 /* 364 * nfs close vnode op 365 * For reg files, invalidate any buffer cache entries. 366 */ 367 /* ARGSUSED */ 368 int 369 nfs_close(ap) 370 struct vop_close_args /* { 371 struct vnodeop_desc *a_desc; 372 struct vnode *a_vp; 373 int a_fflag; 374 struct ucred *a_cred; 375 struct proc *a_p; 376 } */ *ap; 377 { 378 register struct vnode *vp = ap->a_vp; 379 register struct nfsnode *np = VTONFS(vp); 380 int error = 0; 381 382 if (vp->v_type == VREG) { 383 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) == 0 && 384 (np->n_flag & NMODIFIED)) { 385 error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p, 1); 386 np->n_attrstamp = 0; 387 } 388 if (np->n_flag & NWRITEERR) { 389 np->n_flag &= ~NWRITEERR; 390 error = np->n_error; 391 } 392 } 393 return (error); 394 } 395 396 /* 397 * nfs getattr call from vfs. 398 */ 399 int 400 nfs_getattr(ap) 401 struct vop_getattr_args /* { 402 struct vnode *a_vp; 403 struct vattr *a_vap; 404 struct ucred *a_cred; 405 struct proc *a_p; 406 } */ *ap; 407 { 408 register struct vnode *vp = ap->a_vp; 409 register struct nfsnode *np = VTONFS(vp); 410 register caddr_t cp; 411 caddr_t bpos, dpos; 412 int error = 0; 413 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 414 415 /* 416 * Update local times for special files. 417 */ 418 if (np->n_flag & (NACC | NUPD)) 419 np->n_flag |= NCHG; 420 /* 421 * First look in the cache. 422 */ 423 if (nfs_getattrcache(vp, ap->a_vap) == 0) 424 return (0); 425 nfsstats.rpccnt[NFSPROC_GETATTR]++; 426 nfsm_reqhead(vp, NFSPROC_GETATTR, NFSX_FH); 427 nfsm_fhtom(vp); 428 nfsm_request(vp, NFSPROC_GETATTR, ap->a_p, ap->a_cred); 429 nfsm_loadattr(vp, ap->a_vap); 430 nfsm_reqdone; 431 return (error); 432 } 433 434 /* 435 * nfs setattr call. 436 */ 437 int 438 nfs_setattr(ap) 439 struct vop_setattr_args /* { 440 struct vnodeop_desc *a_desc; 441 struct vnode *a_vp; 442 struct vattr *a_vap; 443 struct ucred *a_cred; 444 struct proc *a_p; 445 } */ *ap; 446 { 447 register struct nfsv2_sattr *sp; 448 register caddr_t cp; 449 register long t1; 450 caddr_t bpos, dpos, cp2; 451 u_long *tl; 452 int error = 0, isnq; 453 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 454 register struct vnode *vp = ap->a_vp; 455 register struct nfsnode *np = VTONFS(vp); 456 register struct vattr *vap = ap->a_vap; 457 u_quad_t frev, tsize; 458 459 if (vap->va_size != VNOVAL || vap->va_mtime.ts_sec != VNOVAL || 460 vap->va_atime.ts_sec != VNOVAL) { 461 if (vap->va_size != VNOVAL) { 462 switch (vp->v_type) { 463 case VDIR: 464 return (EISDIR); 465 case VCHR: 466 case VBLK: 467 vap->va_size = VNOVAL; 468 break; 469 default: 470 if (np->n_flag & NMODIFIED) { 471 if (vap->va_size == 0) 472 error = nfs_vinvalbuf(vp, 0, 473 ap->a_cred, ap->a_p, 1); 474 else 475 error = nfs_vinvalbuf(vp, V_SAVE, 476 ap->a_cred, ap->a_p, 1); 477 if (error) 478 return (error); 479 } 480 tsize = np->n_size; 481 np->n_size = np->n_vattr.va_size = vap->va_size; 482 vnode_pager_setsize(vp, (u_long)np->n_size); 483 } 484 } else if ((np->n_flag & NMODIFIED) && 485 (error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, 486 ap->a_p, 1)) == EINTR) 487 return (error); 488 } 489 nfsstats.rpccnt[NFSPROC_SETATTR]++; 490 isnq = (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS); 491 nfsm_reqhead(vp, NFSPROC_SETATTR, NFSX_FH+NFSX_SATTR(isnq)); 492 nfsm_fhtom(vp); 493 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 494 if (vap->va_mode == (u_short)-1) 495 sp->sa_mode = VNOVAL; 496 else 497 sp->sa_mode = vtonfs_mode(vp->v_type, vap->va_mode); 498 if (vap->va_uid == (uid_t)-1) 499 sp->sa_uid = VNOVAL; 500 else 501 sp->sa_uid = txdr_unsigned(vap->va_uid); 502 if (vap->va_gid == (gid_t)-1) 503 sp->sa_gid = VNOVAL; 504 else 505 sp->sa_gid = txdr_unsigned(vap->va_gid); 506 if (isnq) { 507 txdr_hyper(&vap->va_size, &sp->sa_nqsize); 508 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 509 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 510 sp->sa_nqflags = txdr_unsigned(vap->va_flags); 511 sp->sa_nqrdev = VNOVAL; 512 } else { 513 sp->sa_nfssize = txdr_unsigned(vap->va_size); 514 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 515 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 516 } 517 nfsm_request(vp, NFSPROC_SETATTR, ap->a_p, ap->a_cred); 518 nfsm_loadattr(vp, (struct vattr *)0); 519 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) && 520 NQNFS_CKCACHABLE(vp, NQL_WRITE)) { 521 nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED); 522 fxdr_hyper(tl, &frev); 523 if (frev > np->n_brev) 524 np->n_brev = frev; 525 } 526 nfsm_reqdone; 527 if (error) { 528 np->n_size = np->n_vattr.va_size = tsize; 529 vnode_pager_setsize(vp, (u_long)np->n_size); 530 } 531 return (error); 532 } 533 534 /* 535 * nfs lookup call, one step at a time... 536 * First look in cache 537 * If not found, unlock the directory nfsnode and do the rpc 538 */ 539 int 540 nfs_lookup(ap) 541 struct vop_lookup_args /* { 542 struct vnodeop_desc *a_desc; 543 struct vnode *a_dvp; 544 struct vnode **a_vpp; 545 struct componentname *a_cnp; 546 } */ *ap; 547 { 548 register struct componentname *cnp = ap->a_cnp; 549 register struct vnode *dvp = ap->a_dvp; 550 register struct vnode **vpp = ap->a_vpp; 551 register int flags = cnp->cn_flags; 552 register struct vnode *vdp; 553 register u_long *tl; 554 register caddr_t cp; 555 register long t1, t2; 556 struct nfsmount *nmp; 557 caddr_t bpos, dpos, cp2; 558 time_t reqtime; 559 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 560 struct vnode *newvp; 561 long len; 562 nfsv2fh_t *fhp; 563 struct nfsnode *np; 564 int lockparent, wantparent, error = 0; 565 int nqlflag, cachable; 566 u_quad_t frev; 567 568 *vpp = NULL; 569 if (dvp->v_type != VDIR) 570 return (ENOTDIR); 571 lockparent = flags & LOCKPARENT; 572 wantparent = flags & (LOCKPARENT|WANTPARENT); 573 nmp = VFSTONFS(dvp->v_mount); 574 np = VTONFS(dvp); 575 if ((error = cache_lookup(dvp, vpp, cnp)) && error != ENOENT) { 576 struct vattr vattr; 577 int vpid; 578 579 vdp = *vpp; 580 vpid = vdp->v_id; 581 /* 582 * See the comment starting `Step through' in ufs/ufs_lookup.c 583 * for an explanation of the locking protocol 584 */ 585 if (dvp == vdp) { 586 VREF(vdp); 587 error = 0; 588 } else 589 error = vget(vdp, 1); 590 if (!error) { 591 if (vpid == vdp->v_id) { 592 if (nmp->nm_flag & NFSMNT_NQNFS) { 593 if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) == 0) { 594 nfsstats.lookupcache_hits++; 595 if (cnp->cn_nameiop != LOOKUP && 596 (flags & ISLASTCN)) 597 cnp->cn_flags |= SAVENAME; 598 return (0); 599 } else if (NQNFS_CKCACHABLE(dvp, NQL_READ)) { 600 if (np->n_lrev != np->n_brev || 601 (np->n_flag & NMODIFIED)) { 602 np->n_direofoffset = 0; 603 cache_purge(dvp); 604 error = nfs_vinvalbuf(dvp, 0, 605 cnp->cn_cred, cnp->cn_proc, 606 1); 607 if (error == EINTR) 608 return (error); 609 np->n_brev = np->n_lrev; 610 } else { 611 nfsstats.lookupcache_hits++; 612 if (cnp->cn_nameiop != LOOKUP && 613 (flags & ISLASTCN)) 614 cnp->cn_flags |= SAVENAME; 615 return (0); 616 } 617 } 618 } else if (!VOP_GETATTR(vdp, &vattr, cnp->cn_cred, cnp->cn_proc) && 619 vattr.va_ctime.ts_sec == VTONFS(vdp)->n_ctime) { 620 nfsstats.lookupcache_hits++; 621 if (cnp->cn_nameiop != LOOKUP && 622 (flags & ISLASTCN)) 623 cnp->cn_flags |= SAVENAME; 624 return (0); 625 } 626 cache_purge(vdp); 627 } 628 vrele(vdp); 629 } 630 *vpp = NULLVP; 631 } 632 error = 0; 633 nfsstats.lookupcache_misses++; 634 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 635 len = cnp->cn_namelen; 636 nfsm_reqhead(dvp, NFSPROC_LOOKUP, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 637 638 /* 639 * For nqnfs optionally piggyback a getlease request for the name 640 * being looked up. 641 */ 642 if (nmp->nm_flag & NFSMNT_NQNFS) { 643 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 644 if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) && 645 ((cnp->cn_flags & MAKEENTRY) && 646 (cnp->cn_nameiop != DELETE || !(flags & ISLASTCN)))) 647 *tl = txdr_unsigned(nmp->nm_leaseterm); 648 else 649 *tl = 0; 650 } 651 nfsm_fhtom(dvp); 652 nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN); 653 reqtime = time.tv_sec; 654 nfsm_request(dvp, NFSPROC_LOOKUP, cnp->cn_proc, cnp->cn_cred); 655 nfsmout: 656 if (error) { 657 if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME) && 658 (flags & ISLASTCN) && error == ENOENT) 659 error = EJUSTRETURN; 660 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)) 661 cnp->cn_flags |= SAVENAME; 662 return (error); 663 } 664 if (nmp->nm_flag & NFSMNT_NQNFS) { 665 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 666 if (*tl) { 667 nqlflag = fxdr_unsigned(int, *tl); 668 nfsm_dissect(tl, u_long *, 4*NFSX_UNSIGNED); 669 cachable = fxdr_unsigned(int, *tl++); 670 reqtime += fxdr_unsigned(int, *tl++); 671 fxdr_hyper(tl, &frev); 672 } else 673 nqlflag = 0; 674 } 675 nfsm_dissect(fhp, nfsv2fh_t *, NFSX_FH); 676 677 /* 678 * Handle RENAME case... 679 */ 680 if (cnp->cn_nameiop == RENAME && wantparent && (flags & ISLASTCN)) { 681 if (!bcmp(np->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 682 m_freem(mrep); 683 return (EISDIR); 684 } 685 if (error = nfs_nget(dvp->v_mount, fhp, &np)) { 686 m_freem(mrep); 687 return (error); 688 } 689 newvp = NFSTOV(np); 690 if (error = 691 nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) { 692 vrele(newvp); 693 m_freem(mrep); 694 return (error); 695 } 696 *vpp = newvp; 697 m_freem(mrep); 698 cnp->cn_flags |= SAVENAME; 699 return (0); 700 } 701 702 if (!bcmp(np->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 703 VREF(dvp); 704 newvp = dvp; 705 } else { 706 if (error = nfs_nget(dvp->v_mount, fhp, &np)) { 707 m_freem(mrep); 708 return (error); 709 } 710 newvp = NFSTOV(np); 711 } 712 if (error = nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) { 713 vrele(newvp); 714 m_freem(mrep); 715 return (error); 716 } 717 m_freem(mrep); 718 *vpp = newvp; 719 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)) 720 cnp->cn_flags |= SAVENAME; 721 if ((cnp->cn_flags & MAKEENTRY) && 722 (cnp->cn_nameiop != DELETE || !(flags & ISLASTCN))) { 723 if ((nmp->nm_flag & NFSMNT_NQNFS) == 0) 724 np->n_ctime = np->n_vattr.va_ctime.ts_sec; 725 else if (nqlflag && reqtime > time.tv_sec) 726 nqnfs_clientlease(nmp, np, nqlflag, cachable, reqtime, 727 frev); 728 cache_enter(dvp, *vpp, cnp); 729 } 730 return (0); 731 } 732 733 /* 734 * nfs read call. 735 * Just call nfs_bioread() to do the work. 736 */ 737 int 738 nfs_read(ap) 739 struct vop_read_args /* { 740 struct vnode *a_vp; 741 struct uio *a_uio; 742 int a_ioflag; 743 struct ucred *a_cred; 744 } */ *ap; 745 { 746 register struct vnode *vp = ap->a_vp; 747 748 if (vp->v_type != VREG) 749 return (EPERM); 750 return (nfs_bioread(vp, ap->a_uio, ap->a_ioflag, ap->a_cred)); 751 } 752 753 /* 754 * nfs readlink call 755 */ 756 int 757 nfs_readlink(ap) 758 struct vop_readlink_args /* { 759 struct vnode *a_vp; 760 struct uio *a_uio; 761 struct ucred *a_cred; 762 } */ *ap; 763 { 764 register struct vnode *vp = ap->a_vp; 765 766 if (vp->v_type != VLNK) 767 return (EPERM); 768 return (nfs_bioread(vp, ap->a_uio, 0, ap->a_cred)); 769 } 770 771 /* 772 * Do a readlink rpc. 773 * Called by nfs_doio() from below the buffer cache. 774 */ 775 int 776 nfs_readlinkrpc(vp, uiop, cred) 777 register struct vnode *vp; 778 struct uio *uiop; 779 struct ucred *cred; 780 { 781 register u_long *tl; 782 register caddr_t cp; 783 register long t1; 784 caddr_t bpos, dpos, cp2; 785 int error = 0; 786 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 787 long len; 788 789 nfsstats.rpccnt[NFSPROC_READLINK]++; 790 nfsm_reqhead(vp, NFSPROC_READLINK, NFSX_FH); 791 nfsm_fhtom(vp); 792 nfsm_request(vp, NFSPROC_READLINK, uiop->uio_procp, cred); 793 nfsm_strsiz(len, NFS_MAXPATHLEN); 794 nfsm_mtouio(uiop, len); 795 nfsm_reqdone; 796 return (error); 797 } 798 799 /* 800 * nfs read rpc call 801 * Ditto above 802 */ 803 int 804 nfs_readrpc(vp, uiop, cred) 805 register struct vnode *vp; 806 struct uio *uiop; 807 struct ucred *cred; 808 { 809 register u_long *tl; 810 register caddr_t cp; 811 register long t1; 812 caddr_t bpos, dpos, cp2; 813 int error = 0; 814 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 815 struct nfsmount *nmp; 816 long len, retlen, tsiz; 817 818 nmp = VFSTONFS(vp->v_mount); 819 tsiz = uiop->uio_resid; 820 if (uiop->uio_offset + tsiz > 0xffffffff && 821 (nmp->nm_flag & NFSMNT_NQNFS) == 0) 822 return (EFBIG); 823 while (tsiz > 0) { 824 nfsstats.rpccnt[NFSPROC_READ]++; 825 len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz; 826 nfsm_reqhead(vp, NFSPROC_READ, NFSX_FH+NFSX_UNSIGNED*3); 827 nfsm_fhtom(vp); 828 nfsm_build(tl, u_long *, NFSX_UNSIGNED*3); 829 if (nmp->nm_flag & NFSMNT_NQNFS) { 830 txdr_hyper(&uiop->uio_offset, tl); 831 *(tl + 2) = txdr_unsigned(len); 832 } else { 833 *tl++ = txdr_unsigned(uiop->uio_offset); 834 *tl++ = txdr_unsigned(len); 835 *tl = 0; 836 } 837 nfsm_request(vp, NFSPROC_READ, uiop->uio_procp, cred); 838 nfsm_loadattr(vp, (struct vattr *)0); 839 nfsm_strsiz(retlen, nmp->nm_rsize); 840 nfsm_mtouio(uiop, retlen); 841 m_freem(mrep); 842 if (retlen < len) 843 tsiz = 0; 844 else 845 tsiz -= len; 846 } 847 nfsmout: 848 return (error); 849 } 850 851 /* 852 * nfs write call 853 */ 854 int 855 nfs_writerpc(vp, uiop, cred, ioflags) 856 register struct vnode *vp; 857 struct uio *uiop; 858 struct ucred *cred; 859 int ioflags; 860 { 861 register u_long *tl; 862 register caddr_t cp; 863 register long t1; 864 caddr_t bpos, dpos, cp2; 865 int error = 0; 866 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 867 struct nfsmount *nmp; 868 struct nfsnode *np = VTONFS(vp); 869 u_quad_t frev; 870 long len, tsiz; 871 872 nmp = VFSTONFS(vp->v_mount); 873 tsiz = uiop->uio_resid; 874 if (uiop->uio_offset + tsiz > 0xffffffff && 875 (nmp->nm_flag & NFSMNT_NQNFS) == 0) 876 return (EFBIG); 877 while (tsiz > 0) { 878 nfsstats.rpccnt[NFSPROC_WRITE]++; 879 len = (tsiz > nmp->nm_wsize) ? nmp->nm_wsize : tsiz; 880 nfsm_reqhead(vp, NFSPROC_WRITE, 881 NFSX_FH+NFSX_UNSIGNED*4+nfsm_rndup(len)); 882 nfsm_fhtom(vp); 883 nfsm_build(tl, u_long *, NFSX_UNSIGNED * 4); 884 if (nmp->nm_flag & NFSMNT_NQNFS) { 885 txdr_hyper(&uiop->uio_offset, tl); 886 tl += 2; 887 *tl++ = 0; 888 } else { 889 *++tl = txdr_unsigned(uiop->uio_offset); 890 tl += 2; 891 } 892 *tl = txdr_unsigned(len); 893 nfsm_uiotom(uiop, len); 894 nfsm_request(vp, NFSPROC_WRITE, uiop->uio_procp, cred); 895 nfsm_loadattr(vp, (struct vattr *)0); 896 if (nmp->nm_flag & NFSMNT_MYWRITE) 897 VTONFS(vp)->n_mtime = VTONFS(vp)->n_vattr.va_mtime.ts_sec; 898 else if ((nmp->nm_flag & NFSMNT_NQNFS) && 899 NQNFS_CKCACHABLE(vp, NQL_WRITE)) { 900 nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED); 901 fxdr_hyper(tl, &frev); 902 if (frev > np->n_brev) 903 np->n_brev = frev; 904 } 905 m_freem(mrep); 906 tsiz -= len; 907 } 908 nfsmout: 909 if (error) 910 uiop->uio_resid = tsiz; 911 return (error); 912 } 913 914 /* 915 * nfs mknod call 916 * This is a kludge. Use a create rpc but with the IFMT bits of the mode 917 * set to specify the file type and the size field for rdev. 918 */ 919 /* ARGSUSED */ 920 int 921 nfs_mknod(ap) 922 struct vop_mknod_args /* { 923 struct vnode *a_dvp; 924 struct vnode **a_vpp; 925 struct componentname *a_cnp; 926 struct vattr *a_vap; 927 } */ *ap; 928 { 929 register struct vnode *dvp = ap->a_dvp; 930 register struct vattr *vap = ap->a_vap; 931 register struct componentname *cnp = ap->a_cnp; 932 register struct nfsv2_sattr *sp; 933 register u_long *tl; 934 register caddr_t cp; 935 register long t1, t2; 936 struct vnode *newvp; 937 struct vattr vattr; 938 char *cp2; 939 caddr_t bpos, dpos; 940 int error = 0, isnq; 941 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 942 u_long rdev; 943 944 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 945 if (vap->va_type == VCHR || vap->va_type == VBLK) 946 rdev = txdr_unsigned(vap->va_rdev); 947 #ifdef FIFO 948 else if (vap->va_type == VFIFO) 949 rdev = 0xffffffff; 950 #endif /* FIFO */ 951 else { 952 VOP_ABORTOP(dvp, cnp); 953 vput(dvp); 954 return (EOPNOTSUPP); 955 } 956 if (error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_proc)) { 957 VOP_ABORTOP(dvp, cnp); 958 vput(dvp); 959 return (error); 960 } 961 nfsstats.rpccnt[NFSPROC_CREATE]++; 962 nfsm_reqhead(dvp, NFSPROC_CREATE, 963 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)+NFSX_SATTR(isnq)); 964 nfsm_fhtom(dvp); 965 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 966 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 967 sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode); 968 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 969 sp->sa_gid = txdr_unsigned(vattr.va_gid); 970 if (isnq) { 971 sp->sa_nqrdev = rdev; 972 sp->sa_nqflags = 0; 973 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 974 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 975 } else { 976 sp->sa_nfssize = rdev; 977 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 978 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 979 } 980 nfsm_request(dvp, NFSPROC_CREATE, cnp->cn_proc, cnp->cn_cred); 981 nfsm_mtofh(dvp, newvp); 982 nfsm_reqdone; 983 if (!error && (cnp->cn_flags & MAKEENTRY)) 984 cache_enter(dvp, newvp, cnp); 985 FREE(cnp->cn_pnbuf, M_NAMEI); 986 VTONFS(dvp)->n_flag |= NMODIFIED; 987 VTONFS(dvp)->n_attrstamp = 0; 988 vrele(dvp); 989 return (error); 990 } 991 992 /* 993 * nfs file create call 994 */ 995 int 996 nfs_create(ap) 997 struct vop_create_args /* { 998 struct vnode *a_dvp; 999 struct vnode **a_vpp; 1000 struct componentname *a_cnp; 1001 struct vattr *a_vap; 1002 } */ *ap; 1003 { 1004 register struct vnode *dvp = ap->a_dvp; 1005 register struct vattr *vap = ap->a_vap; 1006 register struct componentname *cnp = ap->a_cnp; 1007 register struct nfsv2_sattr *sp; 1008 register u_long *tl; 1009 register caddr_t cp; 1010 register long t1, t2; 1011 caddr_t bpos, dpos, cp2; 1012 int error = 0, isnq; 1013 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1014 struct vattr vattr; 1015 1016 if (error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_proc)) { 1017 VOP_ABORTOP(dvp, cnp); 1018 vput(dvp); 1019 return (error); 1020 } 1021 nfsstats.rpccnt[NFSPROC_CREATE]++; 1022 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 1023 nfsm_reqhead(dvp, NFSPROC_CREATE, 1024 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)+NFSX_SATTR(isnq)); 1025 nfsm_fhtom(dvp); 1026 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1027 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 1028 sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode); 1029 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 1030 sp->sa_gid = txdr_unsigned(vattr.va_gid); 1031 if (isnq) { 1032 u_quad_t qval = 0; 1033 1034 txdr_hyper(&qval, &sp->sa_nqsize); 1035 sp->sa_nqflags = 0; 1036 sp->sa_nqrdev = -1; 1037 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 1038 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 1039 } else { 1040 sp->sa_nfssize = 0; 1041 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 1042 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 1043 } 1044 nfsm_request(dvp, NFSPROC_CREATE, cnp->cn_proc, cnp->cn_cred); 1045 nfsm_mtofh(dvp, *ap->a_vpp); 1046 nfsm_reqdone; 1047 if (!error && (cnp->cn_flags & MAKEENTRY)) 1048 cache_enter(dvp, *ap->a_vpp, cnp); 1049 FREE(cnp->cn_pnbuf, M_NAMEI); 1050 VTONFS(dvp)->n_flag |= NMODIFIED; 1051 VTONFS(dvp)->n_attrstamp = 0; 1052 vrele(dvp); 1053 return (error); 1054 } 1055 1056 /* 1057 * nfs file remove call 1058 * To try and make nfs semantics closer to ufs semantics, a file that has 1059 * other processes using the vnode is renamed instead of removed and then 1060 * removed later on the last close. 1061 * - If v_usecount > 1 1062 * If a rename is not already in the works 1063 * call nfs_sillyrename() to set it up 1064 * else 1065 * do the remove rpc 1066 */ 1067 int 1068 nfs_remove(ap) 1069 struct vop_remove_args /* { 1070 struct vnodeop_desc *a_desc; 1071 struct vnode * a_dvp; 1072 struct vnode * a_vp; 1073 struct componentname * a_cnp; 1074 } */ *ap; 1075 { 1076 register struct vnode *vp = ap->a_vp; 1077 register struct vnode *dvp = ap->a_dvp; 1078 register struct componentname *cnp = ap->a_cnp; 1079 register struct nfsnode *np = VTONFS(vp); 1080 register u_long *tl; 1081 register caddr_t cp; 1082 register long t2; 1083 caddr_t bpos, dpos; 1084 int error = 0; 1085 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1086 1087 if (vp->v_usecount > 1) { 1088 if (!np->n_sillyrename) 1089 error = nfs_sillyrename(dvp, vp, cnp); 1090 } else { 1091 /* 1092 * Purge the name cache so that the chance of a lookup for 1093 * the name succeeding while the remove is in progress is 1094 * minimized. Without node locking it can still happen, such 1095 * that an I/O op returns ESTALE, but since you get this if 1096 * another host removes the file.. 1097 */ 1098 cache_purge(vp); 1099 /* 1100 * Throw away biocache buffers. Mainly to avoid 1101 * unnecessary delayed writes. 1102 */ 1103 error = nfs_vinvalbuf(vp, 0, cnp->cn_cred, cnp->cn_proc, 1); 1104 if (error == EINTR) 1105 return (error); 1106 /* Do the rpc */ 1107 nfsstats.rpccnt[NFSPROC_REMOVE]++; 1108 nfsm_reqhead(dvp, NFSPROC_REMOVE, 1109 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)); 1110 nfsm_fhtom(dvp); 1111 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1112 nfsm_request(dvp, NFSPROC_REMOVE, cnp->cn_proc, cnp->cn_cred); 1113 nfsm_reqdone; 1114 FREE(cnp->cn_pnbuf, M_NAMEI); 1115 VTONFS(dvp)->n_flag |= NMODIFIED; 1116 VTONFS(dvp)->n_attrstamp = 0; 1117 /* 1118 * Kludge City: If the first reply to the remove rpc is lost.. 1119 * the reply to the retransmitted request will be ENOENT 1120 * since the file was in fact removed 1121 * Therefore, we cheat and return success. 1122 */ 1123 if (error == ENOENT) 1124 error = 0; 1125 } 1126 np->n_attrstamp = 0; 1127 vrele(dvp); 1128 vrele(vp); 1129 return (error); 1130 } 1131 1132 /* 1133 * nfs file remove rpc called from nfs_inactive 1134 */ 1135 int 1136 nfs_removeit(sp) 1137 register struct sillyrename *sp; 1138 { 1139 register u_long *tl; 1140 register caddr_t cp; 1141 register long t2; 1142 caddr_t bpos, dpos; 1143 int error = 0; 1144 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1145 1146 nfsstats.rpccnt[NFSPROC_REMOVE]++; 1147 nfsm_reqhead(sp->s_dvp, NFSPROC_REMOVE, 1148 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(sp->s_namlen)); 1149 nfsm_fhtom(sp->s_dvp); 1150 nfsm_strtom(sp->s_name, sp->s_namlen, NFS_MAXNAMLEN); 1151 nfsm_request(sp->s_dvp, NFSPROC_REMOVE, NULL, sp->s_cred); 1152 nfsm_reqdone; 1153 VTONFS(sp->s_dvp)->n_flag |= NMODIFIED; 1154 VTONFS(sp->s_dvp)->n_attrstamp = 0; 1155 return (error); 1156 } 1157 1158 /* 1159 * nfs file rename call 1160 */ 1161 int 1162 nfs_rename(ap) 1163 struct vop_rename_args /* { 1164 struct vnode *a_fdvp; 1165 struct vnode *a_fvp; 1166 struct componentname *a_fcnp; 1167 struct vnode *a_tdvp; 1168 struct vnode *a_tvp; 1169 struct componentname *a_tcnp; 1170 } */ *ap; 1171 { 1172 register struct vnode *fvp = ap->a_fvp; 1173 register struct vnode *tvp = ap->a_tvp; 1174 register struct vnode *fdvp = ap->a_fdvp; 1175 register struct vnode *tdvp = ap->a_tdvp; 1176 register struct componentname *tcnp = ap->a_tcnp; 1177 register struct componentname *fcnp = ap->a_fcnp; 1178 register u_long *tl; 1179 register caddr_t cp; 1180 register long t2; 1181 caddr_t bpos, dpos; 1182 int error = 0; 1183 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1184 1185 /* Check for cross-device rename */ 1186 if ((fvp->v_mount != tdvp->v_mount) || 1187 (tvp && (fvp->v_mount != tvp->v_mount))) { 1188 error = EXDEV; 1189 goto out; 1190 } 1191 1192 1193 nfsstats.rpccnt[NFSPROC_RENAME]++; 1194 nfsm_reqhead(fdvp, NFSPROC_RENAME, 1195 (NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(fcnp->cn_namelen)+ 1196 nfsm_rndup(fcnp->cn_namelen)); /* or fcnp->cn_cred?*/ 1197 nfsm_fhtom(fdvp); 1198 nfsm_strtom(fcnp->cn_nameptr, fcnp->cn_namelen, NFS_MAXNAMLEN); 1199 nfsm_fhtom(tdvp); 1200 nfsm_strtom(tcnp->cn_nameptr, tcnp->cn_namelen, NFS_MAXNAMLEN); 1201 nfsm_request(fdvp, NFSPROC_RENAME, tcnp->cn_proc, tcnp->cn_cred); 1202 nfsm_reqdone; 1203 VTONFS(fdvp)->n_flag |= NMODIFIED; 1204 VTONFS(fdvp)->n_attrstamp = 0; 1205 VTONFS(tdvp)->n_flag |= NMODIFIED; 1206 VTONFS(tdvp)->n_attrstamp = 0; 1207 if (fvp->v_type == VDIR) { 1208 if (tvp != NULL && tvp->v_type == VDIR) 1209 cache_purge(tdvp); 1210 cache_purge(fdvp); 1211 } 1212 out: 1213 if (tdvp == tvp) 1214 vrele(tdvp); 1215 else 1216 vput(tdvp); 1217 if (tvp) 1218 vput(tvp); 1219 vrele(fdvp); 1220 vrele(fvp); 1221 /* 1222 * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry. 1223 */ 1224 if (error == ENOENT) 1225 error = 0; 1226 return (error); 1227 } 1228 1229 /* 1230 * nfs file rename rpc called from nfs_remove() above 1231 */ 1232 int 1233 nfs_renameit(sdvp, scnp, sp) 1234 struct vnode *sdvp; 1235 struct componentname *scnp; 1236 register struct sillyrename *sp; 1237 { 1238 register u_long *tl; 1239 register caddr_t cp; 1240 register long t2; 1241 caddr_t bpos, dpos; 1242 int error = 0; 1243 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1244 1245 nfsstats.rpccnt[NFSPROC_RENAME]++; 1246 nfsm_reqhead(sdvp, NFSPROC_RENAME, 1247 (NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(scnp->cn_namelen)+ 1248 nfsm_rndup(sp->s_namlen)); 1249 nfsm_fhtom(sdvp); 1250 nfsm_strtom(scnp->cn_nameptr, scnp->cn_namelen, NFS_MAXNAMLEN); 1251 nfsm_fhtom(sdvp); 1252 nfsm_strtom(sp->s_name, sp->s_namlen, NFS_MAXNAMLEN); 1253 nfsm_request(sdvp, NFSPROC_RENAME, scnp->cn_proc, scnp->cn_cred); 1254 nfsm_reqdone; 1255 FREE(scnp->cn_pnbuf, M_NAMEI); 1256 VTONFS(sdvp)->n_flag |= NMODIFIED; 1257 VTONFS(sdvp)->n_attrstamp = 0; 1258 return (error); 1259 } 1260 1261 /* 1262 * nfs hard link create call 1263 */ 1264 int 1265 nfs_link(ap) 1266 struct vop_link_args /* { 1267 struct vnode *a_vp; 1268 struct vnode *a_tdvp; 1269 struct componentname *a_cnp; 1270 } */ *ap; 1271 { 1272 register struct vnode *vp = ap->a_vp; 1273 register struct vnode *tdvp = ap->a_tdvp; 1274 register struct componentname *cnp = ap->a_cnp; 1275 register u_long *tl; 1276 register caddr_t cp; 1277 register long t2; 1278 caddr_t bpos, dpos; 1279 int error = 0; 1280 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1281 1282 if (vp->v_mount != tdvp->v_mount) { 1283 /*VOP_ABORTOP(vp, cnp);*/ 1284 if (tdvp == vp) 1285 vrele(vp); 1286 else 1287 vput(vp); 1288 return (EXDEV); 1289 } 1290 1291 nfsstats.rpccnt[NFSPROC_LINK]++; 1292 nfsm_reqhead(tdvp, NFSPROC_LINK, 1293 NFSX_FH*2+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)); 1294 nfsm_fhtom(tdvp); 1295 nfsm_fhtom(vp); 1296 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1297 nfsm_request(tdvp, NFSPROC_LINK, cnp->cn_proc, cnp->cn_cred); 1298 nfsm_reqdone; 1299 FREE(cnp->cn_pnbuf, M_NAMEI); 1300 VTONFS(tdvp)->n_attrstamp = 0; 1301 VTONFS(tdvp)->n_flag |= NMODIFIED; 1302 VTONFS(vp)->n_attrstamp = 0; 1303 vrele(vp); 1304 /* 1305 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 1306 */ 1307 if (error == EEXIST) 1308 error = 0; 1309 return (error); 1310 } 1311 1312 /* 1313 * nfs symbolic link create call 1314 */ 1315 /* start here */ 1316 int 1317 nfs_symlink(ap) 1318 struct vop_symlink_args /* { 1319 struct vnode *a_dvp; 1320 struct vnode **a_vpp; 1321 struct componentname *a_cnp; 1322 struct vattr *a_vap; 1323 char *a_target; 1324 } */ *ap; 1325 { 1326 register struct vnode *dvp = ap->a_dvp; 1327 register struct vattr *vap = ap->a_vap; 1328 register struct componentname *cnp = ap->a_cnp; 1329 register struct nfsv2_sattr *sp; 1330 register u_long *tl; 1331 register caddr_t cp; 1332 register long t2; 1333 caddr_t bpos, dpos; 1334 int slen, error = 0, isnq; 1335 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1336 1337 nfsstats.rpccnt[NFSPROC_SYMLINK]++; 1338 slen = strlen(ap->a_target); 1339 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 1340 nfsm_reqhead(dvp, NFSPROC_SYMLINK, NFSX_FH+2*NFSX_UNSIGNED+ 1341 nfsm_rndup(cnp->cn_namelen)+nfsm_rndup(slen)+NFSX_SATTR(isnq)); 1342 nfsm_fhtom(dvp); 1343 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1344 nfsm_strtom(ap->a_target, slen, NFS_MAXPATHLEN); 1345 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 1346 sp->sa_mode = vtonfs_mode(VLNK, vap->va_mode); 1347 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 1348 sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid); 1349 if (isnq) { 1350 quad_t qval = -1; 1351 1352 txdr_hyper(&qval, &sp->sa_nqsize); 1353 sp->sa_nqflags = 0; 1354 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 1355 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 1356 } else { 1357 sp->sa_nfssize = -1; 1358 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 1359 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 1360 } 1361 nfsm_request(dvp, NFSPROC_SYMLINK, cnp->cn_proc, cnp->cn_cred); 1362 nfsm_reqdone; 1363 FREE(cnp->cn_pnbuf, M_NAMEI); 1364 VTONFS(dvp)->n_flag |= NMODIFIED; 1365 VTONFS(dvp)->n_attrstamp = 0; 1366 vrele(dvp); 1367 /* 1368 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 1369 */ 1370 if (error == EEXIST) 1371 error = 0; 1372 return (error); 1373 } 1374 1375 /* 1376 * nfs make dir call 1377 */ 1378 int 1379 nfs_mkdir(ap) 1380 struct vop_mkdir_args /* { 1381 struct vnode *a_dvp; 1382 struct vnode **a_vpp; 1383 struct componentname *a_cnp; 1384 struct vattr *a_vap; 1385 } */ *ap; 1386 { 1387 register struct vnode *dvp = ap->a_dvp; 1388 register struct vattr *vap = ap->a_vap; 1389 register struct componentname *cnp = ap->a_cnp; 1390 register struct vnode **vpp = ap->a_vpp; 1391 register struct nfsv2_sattr *sp; 1392 register u_long *tl; 1393 register caddr_t cp; 1394 register long t1, t2; 1395 register int len; 1396 caddr_t bpos, dpos, cp2; 1397 int error = 0, firsttry = 1, isnq; 1398 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1399 struct vattr vattr; 1400 1401 if (error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_proc)) { 1402 VOP_ABORTOP(dvp, cnp); 1403 vput(dvp); 1404 return (error); 1405 } 1406 len = cnp->cn_namelen; 1407 isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS); 1408 nfsstats.rpccnt[NFSPROC_MKDIR]++; 1409 nfsm_reqhead(dvp, NFSPROC_MKDIR, 1410 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)+NFSX_SATTR(isnq)); 1411 nfsm_fhtom(dvp); 1412 nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN); 1413 nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq)); 1414 sp->sa_mode = vtonfs_mode(VDIR, vap->va_mode); 1415 sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid); 1416 sp->sa_gid = txdr_unsigned(vattr.va_gid); 1417 if (isnq) { 1418 quad_t qval = -1; 1419 1420 txdr_hyper(&qval, &sp->sa_nqsize); 1421 sp->sa_nqflags = 0; 1422 txdr_nqtime(&vap->va_atime, &sp->sa_nqatime); 1423 txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime); 1424 } else { 1425 sp->sa_nfssize = -1; 1426 txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime); 1427 txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime); 1428 } 1429 nfsm_request(dvp, NFSPROC_MKDIR, cnp->cn_proc, cnp->cn_cred); 1430 nfsm_mtofh(dvp, *vpp); 1431 nfsm_reqdone; 1432 VTONFS(dvp)->n_flag |= NMODIFIED; 1433 VTONFS(dvp)->n_attrstamp = 0; 1434 /* 1435 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry 1436 * if we can succeed in looking up the directory. 1437 * "firsttry" is necessary since the macros may "goto nfsmout" which 1438 * is above the if on errors. (Ugh) 1439 */ 1440 if (error == EEXIST && firsttry) { 1441 firsttry = 0; 1442 error = 0; 1443 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 1444 *vpp = NULL; 1445 nfsm_reqhead(dvp, NFSPROC_LOOKUP, 1446 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 1447 nfsm_fhtom(dvp); 1448 nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN); 1449 nfsm_request(dvp, NFSPROC_LOOKUP, cnp->cn_proc, cnp->cn_cred); 1450 nfsm_mtofh(dvp, *vpp); 1451 if ((*vpp)->v_type != VDIR) { 1452 vput(*vpp); 1453 error = EEXIST; 1454 } 1455 m_freem(mrep); 1456 } 1457 FREE(cnp->cn_pnbuf, M_NAMEI); 1458 vrele(dvp); 1459 return (error); 1460 } 1461 1462 /* 1463 * nfs remove directory call 1464 */ 1465 int 1466 nfs_rmdir(ap) 1467 struct vop_rmdir_args /* { 1468 struct vnode *a_dvp; 1469 struct vnode *a_vp; 1470 struct componentname *a_cnp; 1471 } */ *ap; 1472 { 1473 register struct vnode *vp = ap->a_vp; 1474 register struct vnode *dvp = ap->a_dvp; 1475 register struct componentname *cnp = ap->a_cnp; 1476 register u_long *tl; 1477 register caddr_t cp; 1478 register long t2; 1479 caddr_t bpos, dpos; 1480 int error = 0; 1481 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1482 1483 if (dvp == vp) { 1484 vrele(dvp); 1485 vrele(dvp); 1486 FREE(cnp->cn_pnbuf, M_NAMEI); 1487 return (EINVAL); 1488 } 1489 nfsstats.rpccnt[NFSPROC_RMDIR]++; 1490 nfsm_reqhead(dvp, NFSPROC_RMDIR, 1491 NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)); 1492 nfsm_fhtom(dvp); 1493 nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN); 1494 nfsm_request(dvp, NFSPROC_RMDIR, cnp->cn_proc, cnp->cn_cred); 1495 nfsm_reqdone; 1496 FREE(cnp->cn_pnbuf, M_NAMEI); 1497 VTONFS(dvp)->n_flag |= NMODIFIED; 1498 VTONFS(dvp)->n_attrstamp = 0; 1499 cache_purge(dvp); 1500 cache_purge(vp); 1501 vrele(vp); 1502 vrele(dvp); 1503 /* 1504 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 1505 */ 1506 if (error == ENOENT) 1507 error = 0; 1508 return (error); 1509 } 1510 1511 /* 1512 * nfs readdir call 1513 * Although cookie is defined as opaque, I translate it to/from net byte 1514 * order so that it looks more sensible. This appears consistent with the 1515 * Ultrix implementation of NFS. 1516 */ 1517 int 1518 nfs_readdir(ap) 1519 struct vop_readdir_args /* { 1520 struct vnode *a_vp; 1521 struct uio *a_uio; 1522 struct ucred *a_cred; 1523 int *a_eofflag; 1524 u_long *a_cookies; 1525 int a_ncookies; 1526 } */ *ap; 1527 { 1528 register struct vnode *vp = ap->a_vp; 1529 register struct nfsnode *np = VTONFS(vp); 1530 register struct uio *uio = ap->a_uio; 1531 int tresid, error; 1532 struct vattr vattr; 1533 1534 /* 1535 * We don't allow exporting NFS mounts, and currently local requests 1536 * do not need cookies. 1537 */ 1538 if (ap->a_ncookies) 1539 panic("nfs_readdir: not hungry"); 1540 1541 if (vp->v_type != VDIR) 1542 return (EPERM); 1543 /* 1544 * First, check for hit on the EOF offset cache 1545 */ 1546 if (uio->uio_offset != 0 && uio->uio_offset == np->n_direofoffset && 1547 (np->n_flag & NMODIFIED) == 0) { 1548 if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) { 1549 if (NQNFS_CKCACHABLE(vp, NQL_READ)) { 1550 nfsstats.direofcache_hits++; 1551 return (0); 1552 } 1553 } else if (VOP_GETATTR(vp, &vattr, ap->a_cred, uio->uio_procp) == 0 && 1554 np->n_mtime == vattr.va_mtime.ts_sec) { 1555 nfsstats.direofcache_hits++; 1556 return (0); 1557 } 1558 } 1559 1560 /* 1561 * Call nfs_bioread() to do the real work. 1562 */ 1563 tresid = uio->uio_resid; 1564 error = nfs_bioread(vp, uio, 0, ap->a_cred); 1565 1566 if (!error && uio->uio_resid == tresid) 1567 nfsstats.direofcache_misses++; 1568 return (error); 1569 } 1570 1571 /* 1572 * Readdir rpc call. 1573 * Called from below the buffer cache by nfs_doio(). 1574 */ 1575 int 1576 nfs_readdirrpc(vp, uiop, cred) 1577 register struct vnode *vp; 1578 struct uio *uiop; 1579 struct ucred *cred; 1580 { 1581 register long len; 1582 register struct dirent *dp; 1583 register u_long *tl; 1584 register caddr_t cp; 1585 register long t1; 1586 long tlen, lastlen; 1587 caddr_t bpos, dpos, cp2; 1588 int error = 0; 1589 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1590 struct mbuf *md2; 1591 caddr_t dpos2; 1592 int siz; 1593 int more_dirs = 1; 1594 u_long off, savoff; 1595 struct dirent *savdp; 1596 struct nfsmount *nmp; 1597 struct nfsnode *np = VTONFS(vp); 1598 long tresid; 1599 1600 nmp = VFSTONFS(vp->v_mount); 1601 tresid = uiop->uio_resid; 1602 /* 1603 * Loop around doing readdir rpc's of size uio_resid or nm_rsize, 1604 * whichever is smaller, truncated to a multiple of NFS_DIRBLKSIZ. 1605 * The stopping criteria is EOF or buffer full. 1606 */ 1607 while (more_dirs && uiop->uio_resid >= NFS_DIRBLKSIZ) { 1608 nfsstats.rpccnt[NFSPROC_READDIR]++; 1609 nfsm_reqhead(vp, NFSPROC_READDIR, 1610 NFSX_FH + 2 * NFSX_UNSIGNED); 1611 nfsm_fhtom(vp); 1612 nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED); 1613 off = (u_long)uiop->uio_offset; 1614 *tl++ = txdr_unsigned(off); 1615 *tl = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ? 1616 nmp->nm_rsize : uiop->uio_resid) & ~(NFS_DIRBLKSIZ-1)); 1617 nfsm_request(vp, NFSPROC_READDIR, uiop->uio_procp, cred); 1618 siz = 0; 1619 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1620 more_dirs = fxdr_unsigned(int, *tl); 1621 1622 /* Save the position so that we can do nfsm_mtouio() later */ 1623 dpos2 = dpos; 1624 md2 = md; 1625 1626 /* loop thru the dir entries, doctoring them to 4bsd form */ 1627 #ifdef lint 1628 dp = (struct dirent *)0; 1629 #endif /* lint */ 1630 while (more_dirs && siz < uiop->uio_resid) { 1631 savoff = off; /* Hold onto offset and dp */ 1632 savdp = dp; 1633 nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); 1634 dp = (struct dirent *)tl; 1635 dp->d_fileno = fxdr_unsigned(u_long, *tl++); 1636 len = fxdr_unsigned(int, *tl); 1637 if (len <= 0 || len > NFS_MAXNAMLEN) { 1638 error = EBADRPC; 1639 m_freem(mrep); 1640 goto nfsmout; 1641 } 1642 dp->d_namlen = (u_char)len; 1643 dp->d_type = DT_UNKNOWN; 1644 nfsm_adv(len); /* Point past name */ 1645 tlen = nfsm_rndup(len); 1646 /* 1647 * This should not be necessary, but some servers have 1648 * broken XDR such that these bytes are not null filled. 1649 */ 1650 if (tlen != len) { 1651 *dpos = '\0'; /* Null-terminate */ 1652 nfsm_adv(tlen - len); 1653 len = tlen; 1654 } 1655 nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); 1656 off = fxdr_unsigned(u_long, *tl); 1657 *tl++ = 0; /* Ensures null termination of name */ 1658 more_dirs = fxdr_unsigned(int, *tl); 1659 dp->d_reclen = len + 4 * NFSX_UNSIGNED; 1660 siz += dp->d_reclen; 1661 } 1662 /* 1663 * If at end of rpc data, get the eof boolean 1664 */ 1665 if (!more_dirs) { 1666 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1667 more_dirs = (fxdr_unsigned(int, *tl) == 0); 1668 1669 /* 1670 * If at EOF, cache directory offset 1671 */ 1672 if (!more_dirs) 1673 np->n_direofoffset = off; 1674 } 1675 /* 1676 * If there is too much to fit in the data buffer, use savoff and 1677 * savdp to trim off the last record. 1678 * --> we are not at eof 1679 */ 1680 if (siz > uiop->uio_resid) { 1681 off = savoff; 1682 siz -= dp->d_reclen; 1683 dp = savdp; 1684 more_dirs = 0; /* Paranoia */ 1685 } 1686 if (siz > 0) { 1687 lastlen = dp->d_reclen; 1688 md = md2; 1689 dpos = dpos2; 1690 nfsm_mtouio(uiop, siz); 1691 uiop->uio_offset = (off_t)off; 1692 } else 1693 more_dirs = 0; /* Ugh, never happens, but in case.. */ 1694 m_freem(mrep); 1695 } 1696 /* 1697 * Fill last record, iff any, out to a multiple of NFS_DIRBLKSIZ 1698 * by increasing d_reclen for the last record. 1699 */ 1700 if (uiop->uio_resid < tresid) { 1701 len = uiop->uio_resid & (NFS_DIRBLKSIZ - 1); 1702 if (len > 0) { 1703 dp = (struct dirent *) 1704 (uiop->uio_iov->iov_base - lastlen); 1705 dp->d_reclen += len; 1706 uiop->uio_iov->iov_base += len; 1707 uiop->uio_iov->iov_len -= len; 1708 uiop->uio_resid -= len; 1709 } 1710 } 1711 nfsmout: 1712 return (error); 1713 } 1714 1715 /* 1716 * Nqnfs readdir_and_lookup RPC. Used in place of nfs_readdirrpc(). 1717 */ 1718 int 1719 nfs_readdirlookrpc(vp, uiop, cred) 1720 struct vnode *vp; 1721 register struct uio *uiop; 1722 struct ucred *cred; 1723 { 1724 register int len; 1725 register struct dirent *dp; 1726 register u_long *tl; 1727 register caddr_t cp; 1728 register long t1; 1729 caddr_t bpos, dpos, cp2; 1730 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1731 struct nameidata nami, *ndp = &nami; 1732 struct componentname *cnp = &ndp->ni_cnd; 1733 u_long off, endoff, fileno; 1734 time_t reqtime, ltime; 1735 struct nfsmount *nmp; 1736 struct nfsnode *np; 1737 struct vnode *newvp; 1738 nfsv2fh_t *fhp; 1739 u_quad_t frev; 1740 int error = 0, tlen, more_dirs = 1, tresid, doit, bigenough, i; 1741 int cachable; 1742 1743 if (uiop->uio_iovcnt != 1) 1744 panic("nfs rdirlook"); 1745 nmp = VFSTONFS(vp->v_mount); 1746 tresid = uiop->uio_resid; 1747 ndp->ni_dvp = vp; 1748 newvp = NULLVP; 1749 /* 1750 * Loop around doing readdir rpc's of size uio_resid or nm_rsize, 1751 * whichever is smaller, truncated to a multiple of NFS_DIRBLKSIZ. 1752 * The stopping criteria is EOF or buffer full. 1753 */ 1754 while (more_dirs && uiop->uio_resid >= NFS_DIRBLKSIZ) { 1755 nfsstats.rpccnt[NQNFSPROC_READDIRLOOK]++; 1756 nfsm_reqhead(vp, NQNFSPROC_READDIRLOOK, 1757 NFSX_FH + 3 * NFSX_UNSIGNED); 1758 nfsm_fhtom(vp); 1759 nfsm_build(tl, u_long *, 3 * NFSX_UNSIGNED); 1760 off = (u_long)uiop->uio_offset; 1761 *tl++ = txdr_unsigned(off); 1762 *tl++ = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ? 1763 nmp->nm_rsize : uiop->uio_resid) & ~(NFS_DIRBLKSIZ-1)); 1764 if (nmp->nm_flag & NFSMNT_NQLOOKLEASE) 1765 *tl = txdr_unsigned(nmp->nm_leaseterm); 1766 else 1767 *tl = 0; 1768 reqtime = time.tv_sec; 1769 nfsm_request(vp, NQNFSPROC_READDIRLOOK, uiop->uio_procp, cred); 1770 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1771 more_dirs = fxdr_unsigned(int, *tl); 1772 1773 /* loop thru the dir entries, doctoring them to 4bsd form */ 1774 bigenough = 1; 1775 while (more_dirs && bigenough) { 1776 doit = 1; 1777 nfsm_dissect(tl, u_long *, 4 * NFSX_UNSIGNED); 1778 if (nmp->nm_flag & NFSMNT_NQLOOKLEASE) { 1779 cachable = fxdr_unsigned(int, *tl++); 1780 ltime = reqtime + fxdr_unsigned(int, *tl++); 1781 fxdr_hyper(tl, &frev); 1782 } 1783 nfsm_dissect(fhp, nfsv2fh_t *, NFSX_FH); 1784 if (!bcmp(VTONFS(vp)->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) { 1785 VREF(vp); 1786 newvp = vp; 1787 np = VTONFS(vp); 1788 } else { 1789 if (error = nfs_nget(vp->v_mount, fhp, &np)) 1790 doit = 0; 1791 newvp = NFSTOV(np); 1792 } 1793 if (error = nfs_loadattrcache(&newvp, &md, &dpos, 1794 (struct vattr *)0)) 1795 doit = 0; 1796 nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); 1797 fileno = fxdr_unsigned(u_long, *tl++); 1798 len = fxdr_unsigned(int, *tl); 1799 if (len <= 0 || len > NFS_MAXNAMLEN) { 1800 error = EBADRPC; 1801 m_freem(mrep); 1802 goto nfsmout; 1803 } 1804 tlen = (len + 4) & ~0x3; 1805 if ((tlen + DIRHDSIZ) > uiop->uio_resid) 1806 bigenough = 0; 1807 if (bigenough && doit) { 1808 dp = (struct dirent *)uiop->uio_iov->iov_base; 1809 dp->d_fileno = fileno; 1810 dp->d_namlen = len; 1811 dp->d_reclen = tlen + DIRHDSIZ; 1812 dp->d_type = 1813 IFTODT(VTTOIF(np->n_vattr.va_type)); 1814 uiop->uio_resid -= DIRHDSIZ; 1815 uiop->uio_iov->iov_base += DIRHDSIZ; 1816 uiop->uio_iov->iov_len -= DIRHDSIZ; 1817 cnp->cn_nameptr = uiop->uio_iov->iov_base; 1818 cnp->cn_namelen = len; 1819 ndp->ni_vp = newvp; 1820 nfsm_mtouio(uiop, len); 1821 cp = uiop->uio_iov->iov_base; 1822 tlen -= len; 1823 for (i = 0; i < tlen; i++) 1824 *cp++ = '\0'; 1825 uiop->uio_iov->iov_base += tlen; 1826 uiop->uio_iov->iov_len -= tlen; 1827 uiop->uio_resid -= tlen; 1828 cnp->cn_hash = 0; 1829 for (cp = cnp->cn_nameptr, i = 1; i <= len; i++, cp++) 1830 cnp->cn_hash += (unsigned char)*cp * i; 1831 if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) && 1832 ltime > time.tv_sec) 1833 nqnfs_clientlease(nmp, np, NQL_READ, 1834 cachable, ltime, frev); 1835 if (cnp->cn_namelen <= NCHNAMLEN) 1836 cache_enter(ndp->ni_dvp, ndp->ni_vp, cnp); 1837 } else { 1838 nfsm_adv(nfsm_rndup(len)); 1839 } 1840 if (newvp != NULLVP) { 1841 vrele(newvp); 1842 newvp = NULLVP; 1843 } 1844 nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); 1845 if (bigenough) 1846 endoff = off = fxdr_unsigned(u_long, *tl++); 1847 else 1848 endoff = fxdr_unsigned(u_long, *tl++); 1849 more_dirs = fxdr_unsigned(int, *tl); 1850 } 1851 /* 1852 * If at end of rpc data, get the eof boolean 1853 */ 1854 if (!more_dirs) { 1855 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1856 more_dirs = (fxdr_unsigned(int, *tl) == 0); 1857 1858 /* 1859 * If at EOF, cache directory offset 1860 */ 1861 if (!more_dirs) 1862 VTONFS(vp)->n_direofoffset = endoff; 1863 } 1864 if (uiop->uio_resid < tresid) 1865 uiop->uio_offset = (off_t)off; 1866 else 1867 more_dirs = 0; 1868 m_freem(mrep); 1869 } 1870 /* 1871 * Fill last record, iff any, out to a multiple of NFS_DIRBLKSIZ 1872 * by increasing d_reclen for the last record. 1873 */ 1874 if (uiop->uio_resid < tresid) { 1875 len = uiop->uio_resid & (NFS_DIRBLKSIZ - 1); 1876 if (len > 0) { 1877 dp->d_reclen += len; 1878 uiop->uio_iov->iov_base += len; 1879 uiop->uio_iov->iov_len -= len; 1880 uiop->uio_resid -= len; 1881 } 1882 } 1883 nfsmout: 1884 if (newvp != NULLVP) 1885 vrele(newvp); 1886 return (error); 1887 } 1888 static char hextoasc[] = "0123456789abcdef"; 1889 1890 /* 1891 * Silly rename. To make the NFS filesystem that is stateless look a little 1892 * more like the "ufs" a remove of an active vnode is translated to a rename 1893 * to a funny looking filename that is removed by nfs_inactive on the 1894 * nfsnode. There is the potential for another process on a different client 1895 * to create the same funny name between the nfs_lookitup() fails and the 1896 * nfs_rename() completes, but... 1897 */ 1898 int 1899 nfs_sillyrename(dvp, vp, cnp) 1900 struct vnode *dvp, *vp; 1901 struct componentname *cnp; 1902 { 1903 register struct nfsnode *np; 1904 register struct sillyrename *sp; 1905 int error; 1906 short pid; 1907 1908 cache_purge(dvp); 1909 np = VTONFS(vp); 1910 #ifdef SILLYSEPARATE 1911 MALLOC(sp, struct sillyrename *, sizeof (struct sillyrename), 1912 M_NFSREQ, M_WAITOK); 1913 #else 1914 sp = &np->n_silly; 1915 #endif 1916 sp->s_cred = crdup(cnp->cn_cred); 1917 sp->s_dvp = dvp; 1918 VREF(dvp); 1919 1920 /* Fudge together a funny name */ 1921 pid = cnp->cn_proc->p_pid; 1922 bcopy(".nfsAxxxx4.4", sp->s_name, 13); 1923 sp->s_namlen = 12; 1924 sp->s_name[8] = hextoasc[pid & 0xf]; 1925 sp->s_name[7] = hextoasc[(pid >> 4) & 0xf]; 1926 sp->s_name[6] = hextoasc[(pid >> 8) & 0xf]; 1927 sp->s_name[5] = hextoasc[(pid >> 12) & 0xf]; 1928 1929 /* Try lookitups until we get one that isn't there */ 1930 while (nfs_lookitup(sp, (nfsv2fh_t *)0, cnp->cn_proc) == 0) { 1931 sp->s_name[4]++; 1932 if (sp->s_name[4] > 'z') { 1933 error = EINVAL; 1934 goto bad; 1935 } 1936 } 1937 if (error = nfs_renameit(dvp, cnp, sp)) 1938 goto bad; 1939 nfs_lookitup(sp, &np->n_fh, cnp->cn_proc); 1940 np->n_sillyrename = sp; 1941 return (0); 1942 bad: 1943 vrele(sp->s_dvp); 1944 crfree(sp->s_cred); 1945 #ifdef SILLYSEPARATE 1946 free((caddr_t)sp, M_NFSREQ); 1947 #endif 1948 return (error); 1949 } 1950 1951 /* 1952 * Look up a file name for silly rename stuff. 1953 * Just like nfs_lookup() except that it doesn't load returned values 1954 * into the nfsnode table. 1955 * If fhp != NULL it copies the returned file handle out 1956 */ 1957 int 1958 nfs_lookitup(sp, fhp, procp) 1959 register struct sillyrename *sp; 1960 nfsv2fh_t *fhp; 1961 struct proc *procp; 1962 { 1963 register struct vnode *vp = sp->s_dvp; 1964 register u_long *tl; 1965 register caddr_t cp; 1966 register long t1, t2; 1967 caddr_t bpos, dpos, cp2; 1968 int error = 0, isnq; 1969 struct mbuf *mreq, *mrep, *md, *mb, *mb2; 1970 long len; 1971 1972 isnq = (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS); 1973 nfsstats.rpccnt[NFSPROC_LOOKUP]++; 1974 len = sp->s_namlen; 1975 nfsm_reqhead(vp, NFSPROC_LOOKUP, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)); 1976 if (isnq) { 1977 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 1978 *tl = 0; 1979 } 1980 nfsm_fhtom(vp); 1981 nfsm_strtom(sp->s_name, len, NFS_MAXNAMLEN); 1982 nfsm_request(vp, NFSPROC_LOOKUP, procp, sp->s_cred); 1983 if (fhp != NULL) { 1984 if (isnq) 1985 nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); 1986 nfsm_dissect(cp, caddr_t, NFSX_FH); 1987 bcopy(cp, (caddr_t)fhp, NFSX_FH); 1988 } 1989 nfsm_reqdone; 1990 return (error); 1991 } 1992 1993 /* 1994 * Kludge City.. 1995 * - make nfs_bmap() essentially a no-op that does no translation 1996 * - do nfs_strategy() by faking physical I/O with nfs_readrpc/nfs_writerpc 1997 * after mapping the physical addresses into Kernel Virtual space in the 1998 * nfsiobuf area. 1999 * (Maybe I could use the process's page mapping, but I was concerned that 2000 * Kernel Write might not be enabled and also figured copyout() would do 2001 * a lot more work than bcopy() and also it currently happens in the 2002 * context of the swapper process (2). 2003 */ 2004 int 2005 nfs_bmap(ap) 2006 struct vop_bmap_args /* { 2007 struct vnode *a_vp; 2008 daddr_t a_bn; 2009 struct vnode **a_vpp; 2010 daddr_t *a_bnp; 2011 int *a_runp; 2012 } */ *ap; 2013 { 2014 register struct vnode *vp = ap->a_vp; 2015 2016 if (ap->a_vpp != NULL) 2017 *ap->a_vpp = vp; 2018 if (ap->a_bnp != NULL) 2019 *ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize); 2020 return (0); 2021 } 2022 2023 /* 2024 * Strategy routine. 2025 * For async requests when nfsiod(s) are running, queue the request by 2026 * calling nfs_asyncio(), otherwise just all nfs_doio() to do the 2027 * request. 2028 */ 2029 int 2030 nfs_strategy(ap) 2031 struct vop_strategy_args *ap; 2032 { 2033 register struct buf *bp = ap->a_bp; 2034 struct ucred *cr; 2035 struct proc *p; 2036 int error = 0; 2037 2038 if (bp->b_flags & B_PHYS) 2039 panic("nfs physio"); 2040 if (bp->b_flags & B_ASYNC) 2041 p = (struct proc *)0; 2042 else 2043 p = curproc; /* XXX */ 2044 if (bp->b_flags & B_READ) 2045 cr = bp->b_rcred; 2046 else 2047 cr = bp->b_wcred; 2048 /* 2049 * If the op is asynchronous and an i/o daemon is waiting 2050 * queue the request, wake it up and wait for completion 2051 * otherwise just do it ourselves. 2052 */ 2053 if ((bp->b_flags & B_ASYNC) == 0 || 2054 nfs_asyncio(bp, NOCRED)) 2055 error = nfs_doio(bp, cr, p); 2056 return (error); 2057 } 2058 2059 /* 2060 * Mmap a file 2061 * 2062 * NB Currently unsupported. 2063 */ 2064 /* ARGSUSED */ 2065 int 2066 nfs_mmap(ap) 2067 struct vop_mmap_args /* { 2068 struct vnode *a_vp; 2069 int a_fflags; 2070 struct ucred *a_cred; 2071 struct proc *a_p; 2072 } */ *ap; 2073 { 2074 2075 return (EINVAL); 2076 } 2077 2078 /* 2079 * Flush all the blocks associated with a vnode. 2080 * Walk through the buffer pool and push any dirty pages 2081 * associated with the vnode. 2082 */ 2083 /* ARGSUSED */ 2084 int 2085 nfs_fsync(ap) 2086 struct vop_fsync_args /* { 2087 struct vnodeop_desc *a_desc; 2088 struct vnode * a_vp; 2089 struct ucred * a_cred; 2090 int a_waitfor; 2091 struct proc * a_p; 2092 } */ *ap; 2093 { 2094 register struct vnode *vp = ap->a_vp; 2095 register struct nfsnode *np = VTONFS(vp); 2096 register struct buf *bp; 2097 struct buf *nbp; 2098 struct nfsmount *nmp; 2099 int s, error = 0, slptimeo = 0, slpflag = 0; 2100 2101 nmp = VFSTONFS(vp->v_mount); 2102 if (nmp->nm_flag & NFSMNT_INT) 2103 slpflag = PCATCH; 2104 loop: 2105 s = splbio(); 2106 for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { 2107 nbp = bp->b_vnbufs.le_next; 2108 if (bp->b_flags & B_BUSY) { 2109 if (ap->a_waitfor != MNT_WAIT) 2110 continue; 2111 bp->b_flags |= B_WANTED; 2112 error = tsleep((caddr_t)bp, slpflag | (PRIBIO + 1), 2113 "nfsfsync", slptimeo); 2114 splx(s); 2115 if (error) { 2116 if (nfs_sigintr(nmp, (struct nfsreq *)0, ap->a_p)) 2117 return (EINTR); 2118 if (slpflag == PCATCH) { 2119 slpflag = 0; 2120 slptimeo = 2 * hz; 2121 } 2122 } 2123 goto loop; 2124 } 2125 if ((bp->b_flags & B_DELWRI) == 0) 2126 panic("nfs_fsync: not dirty"); 2127 bremfree(bp); 2128 bp->b_flags |= B_BUSY; 2129 splx(s); 2130 bp->b_flags |= B_ASYNC; 2131 VOP_BWRITE(bp); 2132 goto loop; 2133 } 2134 splx(s); 2135 if (ap->a_waitfor == MNT_WAIT) { 2136 while (vp->v_numoutput) { 2137 vp->v_flag |= VBWAIT; 2138 error = tsleep((caddr_t)&vp->v_numoutput, 2139 slpflag | (PRIBIO + 1), "nfsfsync", slptimeo); 2140 if (error) { 2141 if (nfs_sigintr(nmp, (struct nfsreq *)0, ap->a_p)) 2142 return (EINTR); 2143 if (slpflag == PCATCH) { 2144 slpflag = 0; 2145 slptimeo = 2 * hz; 2146 } 2147 } 2148 } 2149 if (vp->v_dirtyblkhd.lh_first) { 2150 #ifdef DIAGNOSTIC 2151 vprint("nfs_fsync: dirty", vp); 2152 #endif 2153 goto loop; 2154 } 2155 } 2156 if (np->n_flag & NWRITEERR) { 2157 error = np->n_error; 2158 np->n_flag &= ~NWRITEERR; 2159 } 2160 return (error); 2161 } 2162 2163 /* 2164 * Return POSIX pathconf information applicable to nfs. 2165 * 2166 * Currently the NFS protocol does not support getting such 2167 * information from the remote server. 2168 */ 2169 /* ARGSUSED */ 2170 nfs_pathconf(ap) 2171 struct vop_pathconf_args /* { 2172 struct vnode *a_vp; 2173 int a_name; 2174 int *a_retval; 2175 } */ *ap; 2176 { 2177 2178 return (EINVAL); 2179 } 2180 2181 /* 2182 * NFS advisory byte-level locks. 2183 * Currently unsupported. 2184 */ 2185 int 2186 nfs_advlock(ap) 2187 struct vop_advlock_args /* { 2188 struct vnode *a_vp; 2189 caddr_t a_id; 2190 int a_op; 2191 struct flock *a_fl; 2192 int a_flags; 2193 } */ *ap; 2194 { 2195 2196 return (EOPNOTSUPP); 2197 } 2198 2199 /* 2200 * Print out the contents of an nfsnode. 2201 */ 2202 int 2203 nfs_print(ap) 2204 struct vop_print_args /* { 2205 struct vnode *a_vp; 2206 } */ *ap; 2207 { 2208 register struct vnode *vp = ap->a_vp; 2209 register struct nfsnode *np = VTONFS(vp); 2210 2211 printf("tag VT_NFS, fileid %d fsid 0x%x", 2212 np->n_vattr.va_fileid, np->n_vattr.va_fsid); 2213 #ifdef FIFO 2214 if (vp->v_type == VFIFO) 2215 fifo_printinfo(vp); 2216 #endif /* FIFO */ 2217 printf("\n"); 2218 } 2219 2220 /* 2221 * NFS directory offset lookup. 2222 * Currently unsupported. 2223 */ 2224 int 2225 nfs_blkatoff(ap) 2226 struct vop_blkatoff_args /* { 2227 struct vnode *a_vp; 2228 off_t a_offset; 2229 char **a_res; 2230 struct buf **a_bpp; 2231 } */ *ap; 2232 { 2233 2234 return (EOPNOTSUPP); 2235 } 2236 2237 /* 2238 * NFS flat namespace allocation. 2239 * Currently unsupported. 2240 */ 2241 int 2242 nfs_valloc(ap) 2243 struct vop_valloc_args /* { 2244 struct vnode *a_pvp; 2245 int a_mode; 2246 struct ucred *a_cred; 2247 struct vnode **a_vpp; 2248 } */ *ap; 2249 { 2250 2251 return (EOPNOTSUPP); 2252 } 2253 2254 /* 2255 * NFS flat namespace free. 2256 * Currently unsupported. 2257 */ 2258 int 2259 nfs_vfree(ap) 2260 struct vop_vfree_args /* { 2261 struct vnode *a_pvp; 2262 ino_t a_ino; 2263 int a_mode; 2264 } */ *ap; 2265 { 2266 2267 return (EOPNOTSUPP); 2268 } 2269 2270 /* 2271 * NFS file truncation. 2272 */ 2273 int 2274 nfs_truncate(ap) 2275 struct vop_truncate_args /* { 2276 struct vnode *a_vp; 2277 off_t a_length; 2278 int a_flags; 2279 struct ucred *a_cred; 2280 struct proc *a_p; 2281 } */ *ap; 2282 { 2283 2284 /* Use nfs_setattr */ 2285 printf("nfs_truncate: need to implement!!"); 2286 return (EOPNOTSUPP); 2287 } 2288 2289 /* 2290 * NFS update. 2291 */ 2292 int 2293 nfs_update(ap) 2294 struct vop_update_args /* { 2295 struct vnode *a_vp; 2296 struct timeval *a_ta; 2297 struct timeval *a_tm; 2298 int a_waitfor; 2299 } */ *ap; 2300 { 2301 2302 /* Use nfs_setattr */ 2303 printf("nfs_update: need to implement!!"); 2304 return (EOPNOTSUPP); 2305 } 2306 2307 /* 2308 * nfs special file access vnode op. 2309 * Essentially just get vattr and then imitate iaccess() since the device is 2310 * local to the client. 2311 */ 2312 int 2313 nfsspec_access(ap) 2314 struct vop_access_args /* { 2315 struct vnode *a_vp; 2316 int a_mode; 2317 struct ucred *a_cred; 2318 struct proc *a_p; 2319 } */ *ap; 2320 { 2321 register struct vattr *vap; 2322 register gid_t *gp; 2323 register struct ucred *cred = ap->a_cred; 2324 mode_t mode = ap->a_mode; 2325 struct vattr vattr; 2326 register int i; 2327 int error; 2328 2329 /* 2330 * If you're the super-user, 2331 * you always get access. 2332 */ 2333 if (cred->cr_uid == 0) 2334 return (0); 2335 vap = &vattr; 2336 if (error = VOP_GETATTR(ap->a_vp, vap, cred, ap->a_p)) 2337 return (error); 2338 /* 2339 * Access check is based on only one of owner, group, public. 2340 * If not owner, then check group. If not a member of the 2341 * group, then check public access. 2342 */ 2343 if (cred->cr_uid != vap->va_uid) { 2344 mode >>= 3; 2345 gp = cred->cr_groups; 2346 for (i = 0; i < cred->cr_ngroups; i++, gp++) 2347 if (vap->va_gid == *gp) 2348 goto found; 2349 mode >>= 3; 2350 found: 2351 ; 2352 } 2353 return ((vap->va_mode & mode) == mode ? 0 : EACCES); 2354 } 2355 2356 /* 2357 * Read wrapper for special devices. 2358 */ 2359 int 2360 nfsspec_read(ap) 2361 struct vop_read_args /* { 2362 struct vnode *a_vp; 2363 struct uio *a_uio; 2364 int a_ioflag; 2365 struct ucred *a_cred; 2366 } */ *ap; 2367 { 2368 register struct nfsnode *np = VTONFS(ap->a_vp); 2369 2370 /* 2371 * Set access flag. 2372 */ 2373 np->n_flag |= NACC; 2374 np->n_atim = time; 2375 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_read), ap)); 2376 } 2377 2378 /* 2379 * Write wrapper for special devices. 2380 */ 2381 int 2382 nfsspec_write(ap) 2383 struct vop_write_args /* { 2384 struct vnode *a_vp; 2385 struct uio *a_uio; 2386 int a_ioflag; 2387 struct ucred *a_cred; 2388 } */ *ap; 2389 { 2390 register struct nfsnode *np = VTONFS(ap->a_vp); 2391 2392 /* 2393 * Set update flag. 2394 */ 2395 np->n_flag |= NUPD; 2396 np->n_mtim = time; 2397 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_write), ap)); 2398 } 2399 2400 /* 2401 * Close wrapper for special devices. 2402 * 2403 * Update the times on the nfsnode then do device close. 2404 */ 2405 int 2406 nfsspec_close(ap) 2407 struct vop_close_args /* { 2408 struct vnode *a_vp; 2409 int a_fflag; 2410 struct ucred *a_cred; 2411 struct proc *a_p; 2412 } */ *ap; 2413 { 2414 register struct vnode *vp = ap->a_vp; 2415 register struct nfsnode *np = VTONFS(vp); 2416 struct vattr vattr; 2417 2418 if (np->n_flag & (NACC | NUPD)) { 2419 np->n_flag |= NCHG; 2420 if (vp->v_usecount == 1 && 2421 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 2422 VATTR_NULL(&vattr); 2423 if (np->n_flag & NACC) { 2424 vattr.va_atime.ts_sec = np->n_atim.tv_sec; 2425 vattr.va_atime.ts_nsec = 2426 np->n_atim.tv_usec * 1000; 2427 } 2428 if (np->n_flag & NUPD) { 2429 vattr.va_mtime.ts_sec = np->n_mtim.tv_sec; 2430 vattr.va_mtime.ts_nsec = 2431 np->n_mtim.tv_usec * 1000; 2432 } 2433 (void)VOP_SETATTR(vp, &vattr, ap->a_cred, ap->a_p); 2434 } 2435 } 2436 return (VOCALL(spec_vnodeop_p, VOFFSET(vop_close), ap)); 2437 } 2438 2439 #ifdef FIFO 2440 /* 2441 * Read wrapper for fifos. 2442 */ 2443 int 2444 nfsfifo_read(ap) 2445 struct vop_read_args /* { 2446 struct vnode *a_vp; 2447 struct uio *a_uio; 2448 int a_ioflag; 2449 struct ucred *a_cred; 2450 } */ *ap; 2451 { 2452 extern int (**fifo_vnodeop_p)(); 2453 register struct nfsnode *np = VTONFS(ap->a_vp); 2454 2455 /* 2456 * Set access flag. 2457 */ 2458 np->n_flag |= NACC; 2459 np->n_atim = time; 2460 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), ap)); 2461 } 2462 2463 /* 2464 * Write wrapper for fifos. 2465 */ 2466 int 2467 nfsfifo_write(ap) 2468 struct vop_write_args /* { 2469 struct vnode *a_vp; 2470 struct uio *a_uio; 2471 int a_ioflag; 2472 struct ucred *a_cred; 2473 } */ *ap; 2474 { 2475 extern int (**fifo_vnodeop_p)(); 2476 register struct nfsnode *np = VTONFS(ap->a_vp); 2477 2478 /* 2479 * Set update flag. 2480 */ 2481 np->n_flag |= NUPD; 2482 np->n_mtim = time; 2483 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), ap)); 2484 } 2485 2486 /* 2487 * Close wrapper for fifos. 2488 * 2489 * Update the times on the nfsnode then do fifo close. 2490 */ 2491 int 2492 nfsfifo_close(ap) 2493 struct vop_close_args /* { 2494 struct vnode *a_vp; 2495 int a_fflag; 2496 struct ucred *a_cred; 2497 struct proc *a_p; 2498 } */ *ap; 2499 { 2500 register struct vnode *vp = ap->a_vp; 2501 register struct nfsnode *np = VTONFS(vp); 2502 struct vattr vattr; 2503 extern int (**fifo_vnodeop_p)(); 2504 2505 if (np->n_flag & (NACC | NUPD)) { 2506 if (np->n_flag & NACC) 2507 np->n_atim = time; 2508 if (np->n_flag & NUPD) 2509 np->n_mtim = time; 2510 np->n_flag |= NCHG; 2511 if (vp->v_usecount == 1 && 2512 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 2513 VATTR_NULL(&vattr); 2514 if (np->n_flag & NACC) { 2515 vattr.va_atime.ts_sec = np->n_atim.tv_sec; 2516 vattr.va_atime.ts_nsec = 2517 np->n_atim.tv_usec * 1000; 2518 } 2519 if (np->n_flag & NUPD) { 2520 vattr.va_mtime.ts_sec = np->n_mtim.tv_sec; 2521 vattr.va_mtime.ts_nsec = 2522 np->n_mtim.tv_usec * 1000; 2523 } 2524 (void)VOP_SETATTR(vp, &vattr, ap->a_cred, ap->a_p); 2525 } 2526 } 2527 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_close), ap)); 2528 } 2529 #endif /* FIFO */ 2530