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