1 /* 2 * Copyright (c) 2000-2001 Boris Popov 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Boris Popov. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD: src/sys/fs/smbfs/smbfs_vnops.c,v 1.2.2.8 2003/04/04 08:57:23 tjr Exp $ 33 * $DragonFly: src/sys/vfs/smbfs/smbfs_vnops.c,v 1.2 2003/06/17 04:28:33 dillon Exp $ 34 */ 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/namei.h> 38 #include <sys/kernel.h> 39 #include <sys/proc.h> 40 #include <sys/fcntl.h> 41 #include <sys/mount.h> 42 #include <sys/unistd.h> 43 #include <sys/vnode.h> 44 #include <sys/lockf.h> 45 46 #include <vm/vm.h> 47 #include <vm/vm_extern.h> 48 #include <vm/vm_zone.h> 49 50 51 #include <netsmb/smb.h> 52 #include <netsmb/smb_conn.h> 53 #include <netsmb/smb_subr.h> 54 55 #include <fs/smbfs/smbfs.h> 56 #include <fs/smbfs/smbfs_node.h> 57 #include <fs/smbfs/smbfs_subr.h> 58 59 #include <sys/buf.h> 60 61 /* 62 * Prototypes for SMBFS vnode operations 63 */ 64 static int smbfs_create(struct vop_create_args *); 65 static int smbfs_mknod(struct vop_mknod_args *); 66 static int smbfs_open(struct vop_open_args *); 67 static int smbfs_close(struct vop_close_args *); 68 static int smbfs_access(struct vop_access_args *); 69 static int smbfs_getattr(struct vop_getattr_args *); 70 static int smbfs_setattr(struct vop_setattr_args *); 71 static int smbfs_read(struct vop_read_args *); 72 static int smbfs_write(struct vop_write_args *); 73 static int smbfs_fsync(struct vop_fsync_args *); 74 static int smbfs_remove(struct vop_remove_args *); 75 static int smbfs_link(struct vop_link_args *); 76 static int smbfs_lookup(struct vop_lookup_args *); 77 static int smbfs_rename(struct vop_rename_args *); 78 static int smbfs_mkdir(struct vop_mkdir_args *); 79 static int smbfs_rmdir(struct vop_rmdir_args *); 80 static int smbfs_symlink(struct vop_symlink_args *); 81 static int smbfs_readdir(struct vop_readdir_args *); 82 static int smbfs_bmap(struct vop_bmap_args *); 83 static int smbfs_strategy(struct vop_strategy_args *); 84 static int smbfs_print(struct vop_print_args *); 85 static int smbfs_pathconf(struct vop_pathconf_args *ap); 86 static int smbfs_advlock(struct vop_advlock_args *); 87 static int smbfs_getextattr(struct vop_getextattr_args *ap); 88 89 vop_t **smbfs_vnodeop_p; 90 static struct vnodeopv_entry_desc smbfs_vnodeop_entries[] = { 91 { &vop_default_desc, (vop_t *) vop_defaultop }, 92 { &vop_access_desc, (vop_t *) smbfs_access }, 93 { &vop_advlock_desc, (vop_t *) smbfs_advlock }, 94 { &vop_bmap_desc, (vop_t *) smbfs_bmap }, 95 { &vop_close_desc, (vop_t *) smbfs_close }, 96 { &vop_create_desc, (vop_t *) smbfs_create }, 97 { &vop_fsync_desc, (vop_t *) smbfs_fsync }, 98 { &vop_getattr_desc, (vop_t *) smbfs_getattr }, 99 { &vop_getpages_desc, (vop_t *) smbfs_getpages }, 100 { &vop_inactive_desc, (vop_t *) smbfs_inactive }, 101 { &vop_ioctl_desc, (vop_t *) smbfs_ioctl }, 102 { &vop_islocked_desc, (vop_t *) vop_stdislocked }, 103 { &vop_link_desc, (vop_t *) smbfs_link }, 104 { &vop_lock_desc, (vop_t *) vop_stdlock }, 105 { &vop_lookup_desc, (vop_t *) smbfs_lookup }, 106 { &vop_mkdir_desc, (vop_t *) smbfs_mkdir }, 107 { &vop_mknod_desc, (vop_t *) smbfs_mknod }, 108 { &vop_open_desc, (vop_t *) smbfs_open }, 109 { &vop_pathconf_desc, (vop_t *) smbfs_pathconf }, 110 { &vop_print_desc, (vop_t *) smbfs_print }, 111 { &vop_putpages_desc, (vop_t *) smbfs_putpages }, 112 { &vop_read_desc, (vop_t *) smbfs_read }, 113 { &vop_readdir_desc, (vop_t *) smbfs_readdir }, 114 { &vop_reclaim_desc, (vop_t *) smbfs_reclaim }, 115 { &vop_remove_desc, (vop_t *) smbfs_remove }, 116 { &vop_rename_desc, (vop_t *) smbfs_rename }, 117 { &vop_rmdir_desc, (vop_t *) smbfs_rmdir }, 118 { &vop_setattr_desc, (vop_t *) smbfs_setattr }, 119 { &vop_strategy_desc, (vop_t *) smbfs_strategy }, 120 { &vop_symlink_desc, (vop_t *) smbfs_symlink }, 121 { &vop_unlock_desc, (vop_t *) vop_stdunlock }, 122 { &vop_write_desc, (vop_t *) smbfs_write }, 123 { &vop_getextattr_desc, (vop_t *) smbfs_getextattr }, 124 /* { &vop_setextattr_desc, (vop_t *) smbfs_setextattr },*/ 125 { NULL, NULL } 126 }; 127 128 static struct vnodeopv_desc smbfs_vnodeop_opv_desc = 129 { &smbfs_vnodeop_p, smbfs_vnodeop_entries }; 130 131 VNODEOP_SET(smbfs_vnodeop_opv_desc); 132 133 static int 134 smbfs_access(ap) 135 struct vop_access_args /* { 136 struct vnode *a_vp; 137 int a_mode; 138 struct ucred *a_cred; 139 struct proc *a_p; 140 } */ *ap; 141 { 142 struct vnode *vp = ap->a_vp; 143 struct ucred *cred = ap->a_cred; 144 u_int mode = ap->a_mode; 145 struct smbmount *smp = VTOSMBFS(vp); 146 int error = 0; 147 148 SMBVDEBUG("\n"); 149 if ((mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) { 150 switch (vp->v_type) { 151 case VREG: case VDIR: case VLNK: 152 return EROFS; 153 default: 154 break; 155 } 156 } 157 if (cred->cr_uid == 0) 158 return 0; 159 if (cred->cr_uid != smp->sm_args.uid) { 160 mode >>= 3; 161 if (!groupmember(smp->sm_args.gid, cred)) 162 mode >>= 3; 163 } 164 error = (((vp->v_type == VREG) ? smp->sm_args.file_mode : smp->sm_args.dir_mode) & mode) == mode ? 0 : EACCES; 165 return error; 166 } 167 168 /* ARGSUSED */ 169 static int 170 smbfs_open(ap) 171 struct vop_open_args /* { 172 struct vnode *a_vp; 173 int a_mode; 174 struct ucred *a_cred; 175 struct proc *a_p; 176 } */ *ap; 177 { 178 struct vnode *vp = ap->a_vp; 179 struct smbnode *np = VTOSMB(vp); 180 struct smb_cred scred; 181 struct vattr vattr; 182 int mode = ap->a_mode; 183 int error, accmode; 184 185 SMBVDEBUG("%s,%d\n", np->n_name, np->n_opencount); 186 if (vp->v_type != VREG && vp->v_type != VDIR) { 187 SMBFSERR("open eacces vtype=%d\n", vp->v_type); 188 return EACCES; 189 } 190 if (vp->v_type == VDIR) { 191 np->n_opencount++; 192 return 0; 193 } 194 if (np->n_flag & NMODIFIED) { 195 if ((error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p, 1)) == EINTR) 196 return error; 197 smbfs_attr_cacheremove(vp); 198 error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p); 199 if (error) 200 return error; 201 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 202 } else { 203 error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p); 204 if (error) 205 return error; 206 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { 207 error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p, 1); 208 if (error == EINTR) 209 return error; 210 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 211 } 212 } 213 if (np->n_opencount) { 214 np->n_opencount++; 215 return 0; 216 } 217 accmode = SMB_AM_OPENREAD; 218 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 219 accmode = SMB_AM_OPENRW; 220 smb_makescred(&scred, ap->a_p, ap->a_cred); 221 error = smbfs_smb_open(np, accmode, &scred); 222 if (error) { 223 if (mode & FWRITE) 224 return EACCES; 225 accmode = SMB_AM_OPENREAD; 226 error = smbfs_smb_open(np, accmode, &scred); 227 } 228 if (!error) { 229 np->n_opencount++; 230 } 231 smbfs_attr_cacheremove(vp); 232 return error; 233 } 234 235 static int 236 smbfs_closel(struct vop_close_args *ap) 237 { 238 struct vnode *vp = ap->a_vp; 239 struct smbnode *np = VTOSMB(vp); 240 struct proc *p = ap->a_p; 241 struct smb_cred scred; 242 struct vattr vattr; 243 int error; 244 245 SMBVDEBUG("name=%s, pid=%d, c=%d\n",np->n_name, p->p_pid, np->n_opencount); 246 247 smb_makescred(&scred, p, ap->a_cred); 248 249 if (np->n_opencount == 0) { 250 if (vp->v_type != VDIR) 251 SMBERROR("Negative opencount\n"); 252 return 0; 253 } 254 np->n_opencount--; 255 if (vp->v_type == VDIR) { 256 if (np->n_opencount) 257 return 0; 258 if (np->n_dirseq) { 259 smbfs_findclose(np->n_dirseq, &scred); 260 np->n_dirseq = NULL; 261 } 262 error = 0; 263 } else { 264 error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, p, 1); 265 if (np->n_opencount) 266 return error; 267 VOP_GETATTR(vp, &vattr, ap->a_cred, p); 268 error = smbfs_smb_close(np->n_mount->sm_share, np->n_fid, 269 &np->n_mtime, &scred); 270 } 271 smbfs_attr_cacheremove(vp); 272 return error; 273 } 274 275 /* 276 * XXX: VOP_CLOSE() usually called without lock held which is suck. Here we 277 * do some heruistic to determine if vnode should be locked. 278 */ 279 static int 280 smbfs_close(ap) 281 struct vop_close_args /* { 282 struct vnodeop_desc *a_desc; 283 struct vnode *a_vp; 284 int a_fflag; 285 struct ucred *a_cred; 286 struct proc *a_p; 287 } */ *ap; 288 { 289 struct vnode *vp = ap->a_vp; 290 struct proc *p = ap->a_p; 291 int error, dolock; 292 293 VI_LOCK(vp); 294 dolock = (vp->v_flag & VXLOCK) == 0; 295 if (dolock) 296 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY | LK_INTERLOCK, p); 297 else 298 VI_UNLOCK(vp); 299 error = smbfs_closel(ap); 300 if (dolock) 301 VOP_UNLOCK(vp, 0, p); 302 return error; 303 } 304 305 /* 306 * smbfs_getattr call from vfs. 307 */ 308 static int 309 smbfs_getattr(ap) 310 struct vop_getattr_args /* { 311 struct vnode *a_vp; 312 struct vattr *a_vap; 313 struct ucred *a_cred; 314 struct proc *a_p; 315 } */ *ap; 316 { 317 struct vnode *vp = ap->a_vp; 318 struct smbnode *np = VTOSMB(vp); 319 struct vattr *va=ap->a_vap; 320 struct smbfattr fattr; 321 struct smb_cred scred; 322 u_int32_t oldsize; 323 int error; 324 325 SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_flag & VROOT) != 0); 326 error = smbfs_attr_cachelookup(vp, va); 327 if (!error) 328 return 0; 329 SMBVDEBUG("not in the cache\n"); 330 smb_makescred(&scred, ap->a_p, ap->a_cred); 331 oldsize = np->n_size; 332 error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred); 333 if (error) { 334 SMBVDEBUG("error %d\n", error); 335 return error; 336 } 337 smbfs_attr_cacheenter(vp, &fattr); 338 smbfs_attr_cachelookup(vp, va); 339 if (np->n_opencount) 340 np->n_size = oldsize; 341 return 0; 342 } 343 344 static int 345 smbfs_setattr(ap) 346 struct vop_setattr_args /* { 347 struct vnode *a_vp; 348 struct vattr *a_vap; 349 struct ucred *a_cred; 350 struct proc *a_p; 351 } */ *ap; 352 { 353 struct vnode *vp = ap->a_vp; 354 struct smbnode *np = VTOSMB(vp); 355 struct vattr *vap = ap->a_vap; 356 struct timespec *mtime, *atime; 357 struct smb_cred scred; 358 struct smb_share *ssp = np->n_mount->sm_share; 359 struct smb_vc *vcp = SSTOVC(ssp); 360 u_quad_t tsize = 0; 361 int isreadonly, doclose, error = 0; 362 363 SMBVDEBUG("\n"); 364 if (vap->va_flags != VNOVAL) 365 return EOPNOTSUPP; 366 isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY); 367 /* 368 * Disallow write attempts if the filesystem is mounted read-only. 369 */ 370 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 371 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 372 vap->va_mode != (mode_t)VNOVAL) && isreadonly) 373 return EROFS; 374 smb_makescred(&scred, ap->a_p, ap->a_cred); 375 if (vap->va_size != VNOVAL) { 376 switch (vp->v_type) { 377 case VDIR: 378 return EISDIR; 379 case VREG: 380 break; 381 default: 382 return EINVAL; 383 }; 384 if (isreadonly) 385 return EROFS; 386 doclose = 0; 387 vnode_pager_setsize(vp, (u_long)vap->va_size); 388 tsize = np->n_size; 389 np->n_size = vap->va_size; 390 if (np->n_opencount == 0) { 391 error = smbfs_smb_open(np, SMB_AM_OPENRW, &scred); 392 if (error == 0) 393 doclose = 1; 394 } 395 if (error == 0) 396 error = smbfs_smb_setfsize(np, vap->va_size, &scred); 397 if (doclose) 398 smbfs_smb_close(ssp, np->n_fid, NULL, &scred); 399 if (error) { 400 np->n_size = tsize; 401 vnode_pager_setsize(vp, (u_long)tsize); 402 return error; 403 } 404 } 405 mtime = atime = NULL; 406 if (vap->va_mtime.tv_sec != VNOVAL) 407 mtime = &vap->va_mtime; 408 if (vap->va_atime.tv_sec != VNOVAL) 409 atime = &vap->va_atime; 410 if (mtime != atime) { 411 if (ap->a_cred->cr_uid != VTOSMBFS(vp)->sm_args.uid && 412 (error = suser_xxx(ap->a_cred, ap->a_p, PRISON_ROOT)) && 413 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 414 (error = VOP_ACCESS(vp, VWRITE, ap->a_cred, ap->a_p)))) 415 return (error); 416 #if 0 417 if (mtime == NULL) 418 mtime = &np->n_mtime; 419 if (atime == NULL) 420 atime = &np->n_atime; 421 #endif 422 /* 423 * If file is opened, then we can use handle based calls. 424 * If not, use path based ones. 425 */ 426 if (np->n_opencount == 0) { 427 if (vcp->vc_flags & SMBV_WIN95) { 428 error = VOP_OPEN(vp, FWRITE, ap->a_cred, ap->a_p); 429 if (!error) { 430 /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 431 VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p);*/ 432 if (mtime) 433 np->n_mtime = *mtime; 434 VOP_CLOSE(vp, FWRITE, ap->a_cred, ap->a_p); 435 } 436 } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) { 437 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 438 /* error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);*/ 439 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) { 440 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 441 } else { 442 error = smbfs_smb_setpattr(np, 0, mtime, &scred); 443 } 444 } else { 445 if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) { 446 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 447 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) { 448 error = smbfs_smb_setftime(np, mtime, atime, &scred); 449 } else { 450 /* 451 * I have no idea how to handle this for core 452 * level servers. The possible solution is to 453 * update mtime after file is closed. 454 */ 455 SMBERROR("can't update times on an opened file\n"); 456 } 457 } 458 } 459 /* 460 * Invalidate attribute cache in case if server doesn't set 461 * required attributes. 462 */ 463 smbfs_attr_cacheremove(vp); /* invalidate cache */ 464 VOP_GETATTR(vp, vap, ap->a_cred, ap->a_p); 465 np->n_mtime.tv_sec = vap->va_mtime.tv_sec; 466 return error; 467 } 468 /* 469 * smbfs_read call. 470 */ 471 static int 472 smbfs_read(ap) 473 struct vop_read_args /* { 474 struct vnode *a_vp; 475 struct uio *a_uio; 476 int a_ioflag; 477 struct ucred *a_cred; 478 } */ *ap; 479 { 480 struct vnode *vp = ap->a_vp; 481 struct uio *uio = ap->a_uio; 482 483 SMBVDEBUG("\n"); 484 if (vp->v_type != VREG && vp->v_type != VDIR) 485 return EPERM; 486 return smbfs_readvnode(vp, uio, ap->a_cred); 487 } 488 489 static int 490 smbfs_write(ap) 491 struct vop_write_args /* { 492 struct vnode *a_vp; 493 struct uio *a_uio; 494 int a_ioflag; 495 struct ucred *a_cred; 496 } */ *ap; 497 { 498 struct vnode *vp = ap->a_vp; 499 struct uio *uio = ap->a_uio; 500 501 SMBVDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid); 502 if (vp->v_type != VREG) 503 return (EPERM); 504 return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag); 505 } 506 /* 507 * smbfs_create call 508 * Create a regular file. On entry the directory to contain the file being 509 * created is locked. We must release before we return. We must also free 510 * the pathname buffer pointed at by cnp->cn_pnbuf, always on error, or 511 * only if the SAVESTART bit in cn_flags is clear on success. 512 */ 513 static int 514 smbfs_create(ap) 515 struct vop_create_args /* { 516 struct vnode *a_dvp; 517 struct vnode **a_vpp; 518 struct componentname *a_cnp; 519 struct vattr *a_vap; 520 } */ *ap; 521 { 522 struct vnode *dvp = ap->a_dvp; 523 struct vattr *vap = ap->a_vap; 524 struct vnode **vpp=ap->a_vpp; 525 struct componentname *cnp = ap->a_cnp; 526 struct smbnode *dnp = VTOSMB(dvp); 527 struct vnode *vp; 528 struct vattr vattr; 529 struct smbfattr fattr; 530 struct smb_cred scred; 531 char *name = cnp->cn_nameptr; 532 int nmlen = cnp->cn_namelen; 533 int error; 534 535 536 SMBVDEBUG("\n"); 537 *vpp = NULL; 538 if (vap->va_type != VREG) 539 return EOPNOTSUPP; 540 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_proc))) 541 return error; 542 smb_makescred(&scred, cnp->cn_proc, cnp->cn_cred); 543 544 error = smbfs_smb_create(dnp, name, nmlen, &scred); 545 if (error) 546 return error; 547 error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); 548 if (error) 549 return error; 550 error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp); 551 if (error) 552 return error; 553 *vpp = vp; 554 if (cnp->cn_flags & MAKEENTRY) 555 cache_enter(dvp, vp, cnp); 556 return error; 557 } 558 559 static int 560 smbfs_remove(ap) 561 struct vop_remove_args /* { 562 struct vnodeop_desc *a_desc; 563 struct vnode * a_dvp; 564 struct vnode * a_vp; 565 struct componentname * a_cnp; 566 } */ *ap; 567 { 568 struct vnode *vp = ap->a_vp; 569 /* struct vnode *dvp = ap->a_dvp;*/ 570 struct componentname *cnp = ap->a_cnp; 571 struct smbnode *np = VTOSMB(vp); 572 struct smb_cred scred; 573 int error; 574 575 if (vp->v_type == VDIR || np->n_opencount || vp->v_usecount != 1) 576 return EPERM; 577 smb_makescred(&scred, cnp->cn_proc, cnp->cn_cred); 578 error = smbfs_smb_delete(np, &scred); 579 cache_purge(vp); 580 return error; 581 } 582 583 /* 584 * smbfs_file rename call 585 */ 586 static int 587 smbfs_rename(ap) 588 struct vop_rename_args /* { 589 struct vnode *a_fdvp; 590 struct vnode *a_fvp; 591 struct componentname *a_fcnp; 592 struct vnode *a_tdvp; 593 struct vnode *a_tvp; 594 struct componentname *a_tcnp; 595 } */ *ap; 596 { 597 struct vnode *fvp = ap->a_fvp; 598 struct vnode *tvp = ap->a_tvp; 599 struct vnode *fdvp = ap->a_fdvp; 600 struct vnode *tdvp = ap->a_tdvp; 601 struct componentname *tcnp = ap->a_tcnp; 602 /* struct componentname *fcnp = ap->a_fcnp;*/ 603 struct smb_cred scred; 604 u_int16_t flags = 6; 605 int error=0; 606 607 /* Check for cross-device rename */ 608 if ((fvp->v_mount != tdvp->v_mount) || 609 (tvp && (fvp->v_mount != tvp->v_mount))) { 610 error = EXDEV; 611 goto out; 612 } 613 614 if (tvp && tvp->v_usecount > 1) { 615 error = EBUSY; 616 goto out; 617 } 618 flags = 0x10; /* verify all writes */ 619 if (fvp->v_type == VDIR) { 620 flags |= 2; 621 } else if (fvp->v_type == VREG) { 622 flags |= 1; 623 } else { 624 error = EINVAL; 625 goto out; 626 } 627 smb_makescred(&scred, tcnp->cn_proc, tcnp->cn_cred); 628 /* 629 * It seems that Samba doesn't implement SMB_COM_MOVE call... 630 */ 631 #ifdef notnow 632 if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { 633 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp), 634 tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); 635 } else 636 #endif 637 { 638 /* 639 * We have to do the work atomicaly 640 */ 641 if (tvp && tvp != fvp) { 642 error = smbfs_smb_delete(VTOSMB(tvp), &scred); 643 if (error) 644 goto out_cacherem; 645 } 646 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp), 647 tcnp->cn_nameptr, tcnp->cn_namelen, &scred); 648 } 649 650 if (fvp->v_type == VDIR) { 651 if (tvp != NULL && tvp->v_type == VDIR) 652 cache_purge(tdvp); 653 cache_purge(fdvp); 654 } 655 656 out_cacherem: 657 smbfs_attr_cacheremove(fdvp); 658 smbfs_attr_cacheremove(tdvp); 659 out: 660 if (tdvp == tvp) 661 vrele(tdvp); 662 else 663 vput(tdvp); 664 if (tvp) 665 vput(tvp); 666 vrele(fdvp); 667 vrele(fvp); 668 #ifdef possible_mistake 669 vgone(fvp); 670 if (tvp) 671 vgone(tvp); 672 #endif 673 return error; 674 } 675 676 /* 677 * somtime it will come true... 678 */ 679 static int 680 smbfs_link(ap) 681 struct vop_link_args /* { 682 struct vnode *a_tdvp; 683 struct vnode *a_vp; 684 struct componentname *a_cnp; 685 } */ *ap; 686 { 687 return EOPNOTSUPP; 688 } 689 690 /* 691 * smbfs_symlink link create call. 692 * Sometime it will be functional... 693 */ 694 static int 695 smbfs_symlink(ap) 696 struct vop_symlink_args /* { 697 struct vnode *a_dvp; 698 struct vnode **a_vpp; 699 struct componentname *a_cnp; 700 struct vattr *a_vap; 701 char *a_target; 702 } */ *ap; 703 { 704 return EOPNOTSUPP; 705 } 706 707 static int 708 smbfs_mknod(ap) 709 struct vop_mknod_args /* { 710 } */ *ap; 711 { 712 return EOPNOTSUPP; 713 } 714 715 static int 716 smbfs_mkdir(ap) 717 struct vop_mkdir_args /* { 718 struct vnode *a_dvp; 719 struct vnode **a_vpp; 720 struct componentname *a_cnp; 721 struct vattr *a_vap; 722 } */ *ap; 723 { 724 struct vnode *dvp = ap->a_dvp; 725 /* struct vattr *vap = ap->a_vap;*/ 726 struct vnode *vp; 727 struct componentname *cnp = ap->a_cnp; 728 struct smbnode *dnp = VTOSMB(dvp); 729 struct vattr vattr; 730 struct smb_cred scred; 731 struct smbfattr fattr; 732 char *name = cnp->cn_nameptr; 733 int len = cnp->cn_namelen; 734 int error; 735 736 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_proc))) { 737 return error; 738 } 739 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) 740 return EEXIST; 741 smb_makescred(&scred, cnp->cn_proc, cnp->cn_cred); 742 error = smbfs_smb_mkdir(dnp, name, len, &scred); 743 if (error) 744 return error; 745 error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred); 746 if (error) 747 return error; 748 error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); 749 if (error) 750 return error; 751 *ap->a_vpp = vp; 752 return 0; 753 } 754 755 /* 756 * smbfs_remove directory call 757 */ 758 static int 759 smbfs_rmdir(ap) 760 struct vop_rmdir_args /* { 761 struct vnode *a_dvp; 762 struct vnode *a_vp; 763 struct componentname *a_cnp; 764 } */ *ap; 765 { 766 struct vnode *vp = ap->a_vp; 767 struct vnode *dvp = ap->a_dvp; 768 struct componentname *cnp = ap->a_cnp; 769 /* struct smbmount *smp = VTOSMBFS(vp);*/ 770 struct smbnode *dnp = VTOSMB(dvp); 771 struct smbnode *np = VTOSMB(vp); 772 struct smb_cred scred; 773 int error; 774 775 if (dvp == vp) 776 return EINVAL; 777 778 smb_makescred(&scred, cnp->cn_proc, cnp->cn_cred); 779 error = smbfs_smb_rmdir(np, &scred); 780 dnp->n_flag |= NMODIFIED; 781 smbfs_attr_cacheremove(dvp); 782 /* cache_purge(dvp);*/ 783 cache_purge(vp); 784 return error; 785 } 786 787 /* 788 * smbfs_readdir call 789 */ 790 static int 791 smbfs_readdir(ap) 792 struct vop_readdir_args /* { 793 struct vnode *a_vp; 794 struct uio *a_uio; 795 struct ucred *a_cred; 796 int *a_eofflag; 797 u_long *a_cookies; 798 int a_ncookies; 799 } */ *ap; 800 { 801 struct vnode *vp = ap->a_vp; 802 struct uio *uio = ap->a_uio; 803 int error; 804 805 if (vp->v_type != VDIR) 806 return (EPERM); 807 #ifdef notnow 808 if (ap->a_ncookies) { 809 printf("smbfs_readdir: no support for cookies now..."); 810 return (EOPNOTSUPP); 811 } 812 #endif 813 error = smbfs_readvnode(vp, uio, ap->a_cred); 814 return error; 815 } 816 817 /* ARGSUSED */ 818 static int 819 smbfs_fsync(ap) 820 struct vop_fsync_args /* { 821 struct vnodeop_desc *a_desc; 822 struct vnode * a_vp; 823 struct ucred * a_cred; 824 int a_waitfor; 825 struct proc * a_p; 826 } */ *ap; 827 { 828 /* return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_p, 1));*/ 829 return (0); 830 } 831 832 static 833 int smbfs_print (ap) 834 struct vop_print_args /* { 835 struct vnode *a_vp; 836 } */ *ap; 837 { 838 struct vnode *vp = ap->a_vp; 839 struct smbnode *np = VTOSMB(vp); 840 841 if (np == NULL) { 842 printf("no smbnode data\n"); 843 return (0); 844 } 845 printf("tag VT_SMBFS, name = %s, parent = %p, opencount = %d", 846 np->n_name, np->n_parent ? np->n_parent : NULL, 847 np->n_opencount); 848 lockmgr_printinfo(&np->n_lock); 849 printf("\n"); 850 return (0); 851 } 852 853 static int 854 smbfs_pathconf (ap) 855 struct vop_pathconf_args /* { 856 struct vnode *vp; 857 int name; 858 register_t *retval; 859 } */ *ap; 860 { 861 struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp)); 862 struct smb_vc *vcp = SSTOVC(smp->sm_share); 863 register_t *retval = ap->a_retval; 864 int error = 0; 865 866 switch (ap->a_name) { 867 case _PC_LINK_MAX: 868 *retval = 0; 869 break; 870 case _PC_NAME_MAX: 871 *retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12; 872 break; 873 case _PC_PATH_MAX: 874 *retval = 800; /* XXX: a correct one ? */ 875 break; 876 default: 877 error = EINVAL; 878 } 879 return error; 880 } 881 882 static int 883 smbfs_strategy (ap) 884 struct vop_strategy_args /* { 885 struct buf *a_bp 886 } */ *ap; 887 { 888 struct buf *bp=ap->a_bp; 889 struct ucred *cr; 890 struct proc *p; 891 int error = 0; 892 893 SMBVDEBUG("\n"); 894 if (bp->b_flags & B_PHYS) 895 panic("smbfs physio"); 896 if (bp->b_flags & B_ASYNC) 897 p = (struct proc *)0; 898 else 899 p = curproc; /* XXX */ 900 if (bp->b_flags & B_READ) 901 cr = bp->b_rcred; 902 else 903 cr = bp->b_wcred; 904 905 if ((bp->b_flags & B_ASYNC) == 0 ) 906 error = smbfs_doio(bp, cr, p); 907 return error; 908 } 909 910 static int 911 smbfs_bmap(ap) 912 struct vop_bmap_args /* { 913 struct vnode *a_vp; 914 daddr_t a_bn; 915 struct vnode **a_vpp; 916 daddr_t *a_bnp; 917 int *a_runp; 918 int *a_runb; 919 } */ *ap; 920 { 921 struct vnode *vp = ap->a_vp; 922 923 if (ap->a_vpp != NULL) 924 *ap->a_vpp = vp; 925 if (ap->a_bnp != NULL) 926 *ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize); 927 if (ap->a_runp != NULL) 928 *ap->a_runp = 0; 929 if (ap->a_runb != NULL) 930 *ap->a_runb = 0; 931 return (0); 932 } 933 934 int 935 smbfs_ioctl(ap) 936 struct vop_ioctl_args /* { 937 struct vnode *a_vp; 938 u_long a_command; 939 caddr_t a_data; 940 int fflag; 941 struct ucred *cred; 942 struct proc *p; 943 } */ *ap; 944 { 945 return EINVAL; 946 } 947 948 static char smbfs_atl[] = "rhsvda"; 949 static int 950 smbfs_getextattr(struct vop_getextattr_args *ap) 951 /* { 952 IN struct vnode *a_vp; 953 IN char *a_name; 954 INOUT struct uio *a_uio; 955 IN struct ucred *a_cred; 956 IN struct proc *a_p; 957 }; 958 */ 959 { 960 struct vnode *vp = ap->a_vp; 961 struct proc *p = ap->a_p; 962 struct ucred *cred = ap->a_cred; 963 struct uio *uio = ap->a_uio; 964 const char *name = ap->a_name; 965 struct smbnode *np = VTOSMB(vp); 966 struct vattr vattr; 967 char buf[10]; 968 int i, attr, error; 969 970 error = VOP_ACCESS(vp, VREAD, cred, p); 971 if (error) 972 return error; 973 error = VOP_GETATTR(vp, &vattr, cred, p); 974 if (error) 975 return error; 976 if (strcmp(name, "dosattr") == 0) { 977 attr = np->n_dosattr; 978 for (i = 0; i < 6; i++, attr >>= 1) 979 buf[i] = (attr & 1) ? smbfs_atl[i] : '-'; 980 buf[i] = 0; 981 error = uiomove(buf, i, uio); 982 983 } else 984 error = EINVAL; 985 return error; 986 } 987 988 /* 989 * Since we expected to support F_GETLK (and SMB protocol has no such function), 990 * it is necessary to use lf_advlock(). It would be nice if this function had 991 * a callback mechanism because it will help to improve a level of consistency. 992 */ 993 int 994 smbfs_advlock(ap) 995 struct vop_advlock_args /* { 996 struct vnode *a_vp; 997 caddr_t a_id; 998 int a_op; 999 struct flock *a_fl; 1000 int a_flags; 1001 } */ *ap; 1002 { 1003 struct vnode *vp = ap->a_vp; 1004 struct smbnode *np = VTOSMB(vp); 1005 struct flock *fl = ap->a_fl; 1006 caddr_t id = (caddr_t)1 /* ap->a_id */; 1007 /* int flags = ap->a_flags;*/ 1008 struct proc *p = curproc; 1009 struct smb_cred scred; 1010 off_t start, end, size; 1011 int error, lkop; 1012 1013 if (vp->v_type == VDIR) { 1014 /* 1015 * SMB protocol have no support for directory locking. 1016 * Although locks can be processed on local machine, I don't 1017 * think that this is a good idea, because some programs 1018 * can work wrong assuming directory is locked. So, we just 1019 * return 'operation not supported 1020 */ 1021 return EOPNOTSUPP; 1022 } 1023 size = np->n_size; 1024 switch (fl->l_whence) { 1025 case SEEK_SET: 1026 case SEEK_CUR: 1027 start = fl->l_start; 1028 break; 1029 case SEEK_END: 1030 start = fl->l_start + size; 1031 default: 1032 return EINVAL; 1033 } 1034 if (start < 0) 1035 return EINVAL; 1036 if (fl->l_len == 0) 1037 end = -1; 1038 else { 1039 end = start + fl->l_len - 1; 1040 if (end < start) 1041 return EINVAL; 1042 } 1043 smb_makescred(&scred, p, p ? p->p_ucred : NULL); 1044 switch (ap->a_op) { 1045 case F_SETLK: 1046 switch (fl->l_type) { 1047 case F_WRLCK: 1048 lkop = SMB_LOCK_EXCL; 1049 break; 1050 case F_RDLCK: 1051 lkop = SMB_LOCK_SHARED; 1052 break; 1053 case F_UNLCK: 1054 lkop = SMB_LOCK_RELEASE; 1055 break; 1056 default: 1057 return EINVAL; 1058 } 1059 error = lf_advlock(ap, &np->n_lockf, size); 1060 if (error) 1061 break; 1062 lkop = SMB_LOCK_EXCL; 1063 error = smbfs_smb_lock(np, lkop, id, start, end, &scred); 1064 if (error) { 1065 ap->a_op = F_UNLCK; 1066 lf_advlock(ap, &np->n_lockf, size); 1067 } 1068 break; 1069 case F_UNLCK: 1070 lf_advlock(ap, &np->n_lockf, size); 1071 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, &scred); 1072 break; 1073 case F_GETLK: 1074 error = lf_advlock(ap, &np->n_lockf, size); 1075 break; 1076 default: 1077 return EINVAL; 1078 } 1079 return error; 1080 } 1081 1082 static int 1083 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop) 1084 { 1085 static const char *badchars = "*/\[]:<>=;?"; 1086 static const char *badchars83 = " +|,"; 1087 const char *cp; 1088 int i, error; 1089 1090 if (nameiop == LOOKUP) 1091 return 0; 1092 error = ENOENT; 1093 if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { 1094 /* 1095 * Name should conform 8.3 format 1096 */ 1097 if (nmlen > 12) 1098 return ENAMETOOLONG; 1099 cp = index(name, '.'); 1100 if (cp == NULL) 1101 return error; 1102 if (cp == name || (cp - name) > 8) 1103 return error; 1104 cp = index(cp + 1, '.'); 1105 if (cp != NULL) 1106 return error; 1107 for (cp = name, i = 0; i < nmlen; i++, cp++) 1108 if (index(badchars83, *cp) != NULL) 1109 return error; 1110 } 1111 for (cp = name, i = 0; i < nmlen; i++, cp++) 1112 if (index(badchars, *cp) != NULL) 1113 return error; 1114 return 0; 1115 } 1116 1117 /* 1118 * Things go even weird without fixed inode numbers... 1119 */ 1120 int 1121 smbfs_lookup(ap) 1122 struct vop_lookup_args /* { 1123 struct vnodeop_desc *a_desc; 1124 struct vnode *a_dvp; 1125 struct vnode **a_vpp; 1126 struct componentname *a_cnp; 1127 } */ *ap; 1128 { 1129 struct componentname *cnp = ap->a_cnp; 1130 struct proc *p = cnp->cn_proc; 1131 struct vnode *dvp = ap->a_dvp; 1132 struct vnode **vpp = ap->a_vpp; 1133 struct vnode *vp; 1134 struct smbmount *smp; 1135 struct mount *mp = dvp->v_mount; 1136 struct smbnode *dnp; 1137 struct smbfattr fattr, *fap; 1138 struct smb_cred scred; 1139 char *name = cnp->cn_nameptr; 1140 int flags = cnp->cn_flags; 1141 int nameiop = cnp->cn_nameiop; 1142 int nmlen = cnp->cn_namelen; 1143 int lockparent, wantparent, error, islastcn, isdot; 1144 1145 SMBVDEBUG("\n"); 1146 cnp->cn_flags &= ~PDIRUNLOCK; 1147 if (dvp->v_type != VDIR) 1148 return ENOTDIR; 1149 if ((flags & ISDOTDOT) && (dvp->v_flag & VROOT)) { 1150 SMBFSERR("invalid '..'\n"); 1151 return EIO; 1152 } 1153 #ifdef SMB_VNODE_DEBUG 1154 { 1155 char *cp, c; 1156 1157 cp = name + nmlen; 1158 c = *cp; 1159 *cp = 0; 1160 SMBVDEBUG("%d '%s' in '%s' id=d\n", nameiop, name, 1161 VTOSMB(dvp)->n_name); 1162 *cp = c; 1163 } 1164 #endif 1165 islastcn = flags & ISLASTCN; 1166 if (islastcn && (mp->mnt_flag & MNT_RDONLY) && (nameiop != LOOKUP)) 1167 return EROFS; 1168 if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, p)) != 0) 1169 return error; 1170 lockparent = flags & LOCKPARENT; 1171 wantparent = flags & (LOCKPARENT|WANTPARENT); 1172 smp = VFSTOSMBFS(mp); 1173 dnp = VTOSMB(dvp); 1174 isdot = (nmlen == 1 && name[0] == '.'); 1175 1176 error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop); 1177 1178 if (error) 1179 return ENOENT; 1180 1181 error = cache_lookup(dvp, vpp, cnp); 1182 SMBVDEBUG("cache_lookup returned %d\n", error); 1183 if (error > 0) 1184 return error; 1185 if (error) { /* name was found */ 1186 struct vattr vattr; 1187 int vpid; 1188 1189 vp = *vpp; 1190 vpid = vp->v_id; 1191 if (dvp == vp) { /* lookup on current */ 1192 vref(vp); 1193 error = 0; 1194 SMBVDEBUG("cached '.'\n"); 1195 } else if (flags & ISDOTDOT) { 1196 VOP_UNLOCK(dvp, 0, p); /* unlock parent */ 1197 cnp->cn_flags |= PDIRUNLOCK; 1198 error = vget(vp, LK_EXCLUSIVE, p); 1199 if (!error && lockparent && islastcn) { 1200 error = vn_lock(dvp, LK_EXCLUSIVE, p); 1201 if (error == 0) 1202 cnp->cn_flags &= ~PDIRUNLOCK; 1203 } 1204 } else { 1205 error = vget(vp, LK_EXCLUSIVE, p); 1206 if (!lockparent || error || !islastcn) { 1207 VOP_UNLOCK(dvp, 0, p); 1208 cnp->cn_flags |= PDIRUNLOCK; 1209 } 1210 } 1211 if (!error) { 1212 if (vpid == vp->v_id) { 1213 if (!VOP_GETATTR(vp, &vattr, cnp->cn_cred, p) 1214 /* && vattr.va_ctime.tv_sec == VTOSMB(vp)->n_ctime*/) { 1215 if (nameiop != LOOKUP && islastcn) 1216 cnp->cn_flags |= SAVENAME; 1217 SMBVDEBUG("use cached vnode\n"); 1218 return (0); 1219 } 1220 cache_purge(vp); 1221 } 1222 vput(vp); 1223 if (lockparent && dvp != vp && islastcn) 1224 VOP_UNLOCK(dvp, 0, p); 1225 } 1226 error = vn_lock(dvp, LK_EXCLUSIVE, p); 1227 *vpp = NULLVP; 1228 if (error) { 1229 cnp->cn_flags |= PDIRUNLOCK; 1230 return (error); 1231 } 1232 cnp->cn_flags &= ~PDIRUNLOCK; 1233 } 1234 /* 1235 * entry is not in the cache or has been expired 1236 */ 1237 error = 0; 1238 *vpp = NULLVP; 1239 smb_makescred(&scred, p, cnp->cn_cred); 1240 fap = &fattr; 1241 if (flags & ISDOTDOT) { 1242 error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, fap, 1243 &scred); 1244 SMBVDEBUG("result of dotdot lookup: %d\n", error); 1245 } else { 1246 fap = &fattr; 1247 error = smbfs_smb_lookup(dnp, name, nmlen, fap, &scred); 1248 /* if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')*/ 1249 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error); 1250 } 1251 if (error && error != ENOENT) 1252 return error; 1253 if (error) { /* entry not found */ 1254 /* 1255 * Handle RENAME or CREATE case... 1256 */ 1257 if ((nameiop == CREATE || nameiop == RENAME) && wantparent && islastcn) { 1258 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, p); 1259 if (error) 1260 return error; 1261 cnp->cn_flags |= SAVENAME; 1262 if (!lockparent) { 1263 VOP_UNLOCK(dvp, 0, p); 1264 cnp->cn_flags |= PDIRUNLOCK; 1265 } 1266 return (EJUSTRETURN); 1267 } 1268 return ENOENT; 1269 }/* else { 1270 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum); 1271 }*/ 1272 /* 1273 * handle DELETE case ... 1274 */ 1275 if (nameiop == DELETE && islastcn) { /* delete last component */ 1276 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, p); 1277 if (error) 1278 return error; 1279 if (isdot) { 1280 VREF(dvp); 1281 *vpp = dvp; 1282 return 0; 1283 } 1284 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1285 if (error) 1286 return error; 1287 *vpp = vp; 1288 cnp->cn_flags |= SAVENAME; 1289 if (!lockparent) { 1290 VOP_UNLOCK(dvp, 0, p); 1291 cnp->cn_flags |= PDIRUNLOCK; 1292 } 1293 return 0; 1294 } 1295 if (nameiop == RENAME && islastcn && wantparent) { 1296 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, p); 1297 if (error) 1298 return error; 1299 if (isdot) 1300 return EISDIR; 1301 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1302 if (error) 1303 return error; 1304 *vpp = vp; 1305 cnp->cn_flags |= SAVENAME; 1306 if (!lockparent) { 1307 VOP_UNLOCK(dvp, 0, p); 1308 cnp->cn_flags |= PDIRUNLOCK; 1309 } 1310 return 0; 1311 } 1312 if (flags & ISDOTDOT) { 1313 VOP_UNLOCK(dvp, 0, p); 1314 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp); 1315 if (error) { 1316 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY, p); 1317 return error; 1318 } 1319 if (lockparent && islastcn) { 1320 error = vn_lock(dvp, LK_EXCLUSIVE, p); 1321 if (error) { 1322 cnp->cn_flags |= PDIRUNLOCK; 1323 vput(vp); 1324 return error; 1325 } 1326 } 1327 *vpp = vp; 1328 } else if (isdot) { 1329 vref(dvp); 1330 *vpp = dvp; 1331 } else { 1332 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1333 if (error) 1334 return error; 1335 *vpp = vp; 1336 SMBVDEBUG("lookup: getnewvp!\n"); 1337 if (!lockparent || !islastcn) { 1338 VOP_UNLOCK(dvp, 0, p); 1339 cnp->cn_flags |= PDIRUNLOCK; 1340 } 1341 } 1342 if ((cnp->cn_flags & MAKEENTRY)/* && !islastcn*/) { 1343 /* VTOSMB(*vpp)->n_ctime = VTOSMB(*vpp)->n_vattr.va_ctime.tv_sec;*/ 1344 cache_enter(dvp, *vpp, cnp); 1345 } 1346 return 0; 1347 } 1348