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 1.33 2006/07/19 06:08:14 dillon Exp $ 34 */ 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/proc.h> 39 #include <sys/namei.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 <netproto/smb/smb.h> 52 #include <netproto/smb/smb_conn.h> 53 #include <netproto/smb/smb_subr.h> 54 55 #include "smbfs.h" 56 #include "smbfs_node.h" 57 #include "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_old_create_args *); 65 static int smbfs_mknod(struct vop_old_mknod_args *); 66 static int smbfs_open(struct vop_open_args *); 67 static int smbfs_closel(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_old_remove_args *); 75 static int smbfs_link(struct vop_old_link_args *); 76 static int smbfs_lookup(struct vop_old_lookup_args *); 77 static int smbfs_rename(struct vop_old_rename_args *); 78 static int smbfs_mkdir(struct vop_old_mkdir_args *); 79 static int smbfs_rmdir(struct vop_old_rmdir_args *); 80 static int smbfs_symlink(struct vop_old_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 struct vop_ops smbfs_vnode_vops = { 90 .vop_default = vop_defaultop, 91 .vop_access = smbfs_access, 92 .vop_advlock = smbfs_advlock, 93 .vop_bmap = smbfs_bmap, 94 .vop_close = smbfs_closel, 95 .vop_old_create = smbfs_create, 96 .vop_fsync = smbfs_fsync, 97 .vop_getattr = smbfs_getattr, 98 .vop_getpages = smbfs_getpages, 99 .vop_inactive = smbfs_inactive, 100 .vop_ioctl = smbfs_ioctl, 101 .vop_islocked = vop_stdislocked, 102 .vop_old_link = smbfs_link, 103 .vop_lock = vop_stdlock, 104 .vop_old_lookup = smbfs_lookup, 105 .vop_old_mkdir = smbfs_mkdir, 106 .vop_old_mknod = smbfs_mknod, 107 .vop_open = smbfs_open, 108 .vop_pathconf = smbfs_pathconf, 109 .vop_print = smbfs_print, 110 .vop_putpages = smbfs_putpages, 111 .vop_read = smbfs_read, 112 .vop_readdir = smbfs_readdir, 113 .vop_reclaim = smbfs_reclaim, 114 .vop_old_remove = smbfs_remove, 115 .vop_old_rename = smbfs_rename, 116 .vop_old_rmdir = smbfs_rmdir, 117 .vop_setattr = smbfs_setattr, 118 .vop_strategy = smbfs_strategy, 119 .vop_old_symlink = smbfs_symlink, 120 .vop_unlock = vop_stdunlock, 121 .vop_write = smbfs_write, 122 .vop_getextattr = smbfs_getextattr 123 /* .vop_setextattr = smbfs_setextattr */ 124 }; 125 126 /* 127 * smbfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 128 * struct thread *a_td) 129 */ 130 static int 131 smbfs_access(struct vop_access_args *ap) 132 { 133 struct vnode *vp = ap->a_vp; 134 struct ucred *cred = ap->a_cred; 135 u_int mode = ap->a_mode; 136 struct smbmount *smp = VTOSMBFS(vp); 137 int error = 0; 138 139 SMBVDEBUG("\n"); 140 if ((mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) { 141 switch (vp->v_type) { 142 case VREG: case VDIR: case VLNK: 143 return EROFS; 144 default: 145 break; 146 } 147 } 148 if (cred->cr_uid == 0) 149 return 0; 150 if (cred->cr_uid != smp->sm_args.uid) { 151 mode >>= 3; 152 if (!groupmember(smp->sm_args.gid, cred)) 153 mode >>= 3; 154 } 155 error = (((vp->v_type == VREG) ? smp->sm_args.file_mode : smp->sm_args.dir_mode) & mode) == mode ? 0 : EACCES; 156 return error; 157 } 158 159 /* 160 * smbfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 161 * struct thread *a_td) 162 */ 163 /* ARGSUSED */ 164 static int 165 smbfs_open(struct vop_open_args *ap) 166 { 167 struct vnode *vp = ap->a_vp; 168 struct smbnode *np = VTOSMB(vp); 169 struct smb_cred scred; 170 struct vattr vattr; 171 int mode = ap->a_mode; 172 int error, accmode; 173 174 SMBVDEBUG("%s,%d\n", np->n_name, np->n_opencount); 175 if (vp->v_type != VREG && vp->v_type != VDIR) { 176 SMBFSERR("open eacces vtype=%d\n", vp->v_type); 177 return EACCES; 178 } 179 if (vp->v_type == VDIR) { 180 if (np->n_opencount == 0) 181 np->n_cached_cred = crhold(ap->a_cred); 182 np->n_opencount++; 183 return (vop_stdopen(ap)); 184 } 185 if (np->n_flag & NMODIFIED) { 186 if ((error = smbfs_vinvalbuf(vp, V_SAVE, 1)) == EINTR) 187 return error; 188 smbfs_attr_cacheremove(vp); 189 error = VOP_GETATTR(vp, &vattr); 190 if (error) 191 return error; 192 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 193 } else { 194 error = VOP_GETATTR(vp, &vattr); 195 if (error) 196 return error; 197 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { 198 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 199 if (error == EINTR) 200 return error; 201 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 202 } 203 } 204 if (np->n_opencount) { 205 np->n_opencount++; 206 return (vop_stdopen(ap)); 207 } 208 accmode = SMB_AM_OPENREAD; 209 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 210 accmode = SMB_AM_OPENRW; 211 smb_makescred(&scred, curthread, ap->a_cred); 212 error = smbfs_smb_open(np, accmode, &scred); 213 if (error) { 214 if (mode & FWRITE) 215 return EACCES; 216 accmode = SMB_AM_OPENREAD; 217 error = smbfs_smb_open(np, accmode, &scred); 218 } 219 if (!error) { 220 np->n_cached_cred = crhold(ap->a_cred); 221 np->n_opencount++; 222 } 223 smbfs_attr_cacheremove(vp); 224 if (error == 0) 225 vop_stdopen(ap); 226 return error; 227 } 228 229 static int 230 smbfs_closel(struct vop_close_args *ap) 231 { 232 struct vnode *vp = ap->a_vp; 233 struct smbnode *np = VTOSMB(vp); 234 struct smb_cred scred; 235 struct vattr vattr; 236 int error; 237 238 SMBVDEBUG("name=%s, pid=%d, c=%d\n",np->n_name, p->p_pid, np->n_opencount); 239 240 smb_makescred(&scred, curthread, proc0.p_ucred); 241 error = 0; 242 243 if (np->n_opencount == 0) { 244 if (vp->v_type != VDIR) 245 SMBERROR("Negative opencount\n"); 246 goto done; 247 } 248 np->n_opencount--; 249 if (vp->v_type == VDIR) { 250 if (np->n_opencount) 251 goto done; 252 if (np->n_dirseq) { 253 smbfs_findclose(np->n_dirseq, &scred); 254 np->n_dirseq = NULL; 255 } 256 } else { 257 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 258 if (np->n_opencount) 259 goto done; 260 VOP_GETATTR(vp, &vattr); 261 error = smbfs_smb_close(np->n_mount->sm_share, np->n_fid, 262 &np->n_mtime, &scred); 263 } 264 crfree(np->n_cached_cred); 265 np->n_cached_cred = NULL; 266 smbfs_attr_cacheremove(vp); 267 done: 268 vop_stdclose(ap); 269 return error; 270 } 271 272 /* 273 * smbfs_getattr call from vfs. 274 * 275 * smbfs_getattr(struct vnode *a_vp, struct vattr *a_vap, struct thread *a_td) 276 */ 277 static int 278 smbfs_getattr(struct vop_getattr_args *ap) 279 { 280 struct vnode *vp = ap->a_vp; 281 struct smbnode *np = VTOSMB(vp); 282 struct vattr *va=ap->a_vap; 283 struct smbfattr fattr; 284 struct smb_cred scred; 285 u_quad_t oldsize; 286 int error; 287 288 SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_flag & VROOT) != 0); 289 error = smbfs_attr_cachelookup(vp, va); 290 if (!error) 291 return 0; 292 SMBVDEBUG("not in the cache\n"); 293 smb_makescred(&scred, curthread, proc0.p_ucred); 294 oldsize = np->n_size; 295 error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred); 296 if (error) { 297 SMBVDEBUG("error %d\n", error); 298 return error; 299 } 300 smbfs_attr_cacheenter(vp, &fattr); 301 smbfs_attr_cachelookup(vp, va); 302 if (np->n_opencount) 303 np->n_size = oldsize; 304 return 0; 305 } 306 307 /* 308 * smbfs_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred, 309 * struct thread *a_td) 310 */ 311 static int 312 smbfs_setattr(struct vop_setattr_args *ap) 313 { 314 struct vnode *vp = ap->a_vp; 315 struct smbnode *np = VTOSMB(vp); 316 struct vattr *vap = ap->a_vap; 317 struct timespec *mtime, *atime; 318 struct smb_cred scred; 319 struct smb_share *ssp = np->n_mount->sm_share; 320 struct smb_vc *vcp = SSTOVC(ssp); 321 u_quad_t tsize = 0; 322 int isreadonly, doclose, error = 0; 323 324 SMBVDEBUG("\n"); 325 if (vap->va_flags != VNOVAL) 326 return EOPNOTSUPP; 327 isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY); 328 /* 329 * Disallow write attempts if the filesystem is mounted read-only. 330 */ 331 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 332 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 333 vap->va_mode != (mode_t)VNOVAL) && isreadonly) 334 return EROFS; 335 smb_makescred(&scred, curthread, ap->a_cred); 336 if (vap->va_size != VNOVAL) { 337 switch (vp->v_type) { 338 case VDIR: 339 return EISDIR; 340 case VREG: 341 break; 342 default: 343 return EINVAL; 344 }; 345 if (isreadonly) 346 return EROFS; 347 doclose = 0; 348 vnode_pager_setsize(vp, (u_long)vap->va_size); 349 tsize = np->n_size; 350 np->n_size = vap->va_size; 351 if (np->n_opencount == 0) { 352 error = smbfs_smb_open(np, SMB_AM_OPENRW, &scred); 353 if (error == 0) 354 doclose = 1; 355 } 356 if (error == 0) 357 error = smbfs_smb_setfsize(np, vap->va_size, &scred); 358 if (doclose) 359 smbfs_smb_close(ssp, np->n_fid, NULL, &scred); 360 if (error) { 361 np->n_size = tsize; 362 vnode_pager_setsize(vp, (u_long)tsize); 363 return error; 364 } 365 } 366 mtime = atime = NULL; 367 if (vap->va_mtime.tv_sec != VNOVAL) 368 mtime = &vap->va_mtime; 369 if (vap->va_atime.tv_sec != VNOVAL) 370 atime = &vap->va_atime; 371 if (mtime != atime) { 372 if (ap->a_cred->cr_uid != VTOSMBFS(vp)->sm_args.uid && 373 (error = suser_cred(ap->a_cred, PRISON_ROOT)) && 374 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 375 (error = VOP_ACCESS(vp, VWRITE, ap->a_cred)))) 376 return (error); 377 #if 0 378 if (mtime == NULL) 379 mtime = &np->n_mtime; 380 if (atime == NULL) 381 atime = &np->n_atime; 382 #endif 383 /* 384 * If file is opened, then we can use handle based calls. 385 * If not, use path based ones. 386 */ 387 if (np->n_opencount == 0) { 388 if (vcp->vc_flags & SMBV_WIN95) { 389 error = VOP_OPEN(vp, FWRITE, ap->a_cred, NULL); 390 if (!error) { 391 /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 392 VOP_GETATTR(vp, &vattr);*/ 393 if (mtime) 394 np->n_mtime = *mtime; 395 VOP_CLOSE(vp, FWRITE); 396 } 397 } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) { 398 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 399 /* error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);*/ 400 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) { 401 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 402 } else { 403 error = smbfs_smb_setpattr(np, 0, mtime, &scred); 404 } 405 } else { 406 if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) { 407 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 408 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) { 409 error = smbfs_smb_setftime(np, mtime, atime, &scred); 410 } else { 411 /* 412 * I have no idea how to handle this for core 413 * level servers. The possible solution is to 414 * update mtime after file is closed. 415 */ 416 SMBERROR("can't update times on an opened file\n"); 417 } 418 } 419 } 420 /* 421 * Invalidate attribute cache in case if server doesn't set 422 * required attributes. 423 */ 424 smbfs_attr_cacheremove(vp); /* invalidate cache */ 425 VOP_GETATTR(vp, vap); 426 np->n_mtime.tv_sec = vap->va_mtime.tv_sec; 427 return error; 428 } 429 /* 430 * smbfs_read call. 431 * 432 * smbfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 433 * struct ucred *a_cred) 434 */ 435 static int 436 smbfs_read(struct vop_read_args *ap) 437 { 438 struct vnode *vp = ap->a_vp; 439 struct uio *uio = ap->a_uio; 440 441 SMBVDEBUG("\n"); 442 if (vp->v_type != VREG && vp->v_type != VDIR) 443 return EPERM; 444 return smbfs_readvnode(vp, uio, ap->a_cred); 445 } 446 447 /* 448 * smbfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 449 * struct ucred *a_cred) 450 */ 451 static int 452 smbfs_write(struct vop_write_args *ap) 453 { 454 struct vnode *vp = ap->a_vp; 455 struct uio *uio = ap->a_uio; 456 457 SMBVDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid); 458 if (vp->v_type != VREG) 459 return (EPERM); 460 return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag); 461 } 462 /* 463 * smbfs_create call 464 * Create a regular file. On entry the directory to contain the file being 465 * created is locked. We must release before we return. 466 * 467 * smbfs_create(struct vnode *a_dvp, struct vnode **a_vpp, 468 * struct componentname *a_cnp, struct vattr *a_vap) 469 */ 470 static int 471 smbfs_create(struct vop_old_create_args *ap) 472 { 473 struct vnode *dvp = ap->a_dvp; 474 struct vattr *vap = ap->a_vap; 475 struct vnode **vpp=ap->a_vpp; 476 struct componentname *cnp = ap->a_cnp; 477 struct smbnode *dnp = VTOSMB(dvp); 478 struct vnode *vp; 479 struct vattr vattr; 480 struct smbfattr fattr; 481 struct smb_cred scred; 482 char *name = cnp->cn_nameptr; 483 int nmlen = cnp->cn_namelen; 484 int error; 485 486 487 SMBVDEBUG("\n"); 488 *vpp = NULL; 489 if (vap->va_type != VREG) 490 return EOPNOTSUPP; 491 if ((error = VOP_GETATTR(dvp, &vattr))) 492 return error; 493 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 494 495 error = smbfs_smb_create(dnp, name, nmlen, &scred); 496 if (error) 497 return error; 498 error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); 499 if (error) 500 return error; 501 error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp); 502 if (error) 503 return error; 504 *vpp = vp; 505 return error; 506 } 507 508 /* 509 * smbfs_remove(struct vnode *a_dvp, struct vnode *a_vp, 510 * struct componentname *a_cnp) 511 */ 512 static int 513 smbfs_remove(struct vop_old_remove_args *ap) 514 { 515 struct vnode *vp = ap->a_vp; 516 /* struct vnode *dvp = ap->a_dvp;*/ 517 struct componentname *cnp = ap->a_cnp; 518 struct smbnode *np = VTOSMB(vp); 519 struct smb_cred scred; 520 int error; 521 522 if (vp->v_type == VDIR || np->n_opencount || vp->v_usecount != 1) 523 return EPERM; 524 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 525 error = smbfs_smb_delete(np, &scred); 526 return error; 527 } 528 529 /* 530 * smbfs_file rename call 531 * 532 * smbfs_rename(struct vnode *a_fdvp, struct vnode *a_fvp, 533 * struct componentname *a_fcnp, struct vnode *a_tdvp, 534 * struct vnode *a_tvp, struct componentname *a_tcnp) 535 */ 536 static int 537 smbfs_rename(struct vop_old_rename_args *ap) 538 { 539 struct vnode *fvp = ap->a_fvp; 540 struct vnode *tvp = ap->a_tvp; 541 struct vnode *fdvp = ap->a_fdvp; 542 struct vnode *tdvp = ap->a_tdvp; 543 struct componentname *tcnp = ap->a_tcnp; 544 /* struct componentname *fcnp = ap->a_fcnp;*/ 545 struct smb_cred scred; 546 u_int16_t flags = 6; 547 int error=0; 548 549 /* Check for cross-device rename */ 550 if ((fvp->v_mount != tdvp->v_mount) || 551 (tvp && (fvp->v_mount != tvp->v_mount))) { 552 error = EXDEV; 553 goto out; 554 } 555 556 if (tvp && tvp->v_usecount > 1) { 557 error = EBUSY; 558 goto out; 559 } 560 flags = 0x10; /* verify all writes */ 561 if (fvp->v_type == VDIR) { 562 flags |= 2; 563 } else if (fvp->v_type == VREG) { 564 flags |= 1; 565 } else { 566 error = EINVAL; 567 goto out; 568 } 569 smb_makescred(&scred, tcnp->cn_td, tcnp->cn_cred); 570 /* 571 * It seems that Samba doesn't implement SMB_COM_MOVE call... 572 */ 573 #ifdef notnow 574 if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { 575 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp), 576 tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); 577 } else 578 #endif 579 { 580 /* 581 * We have to do the work atomicaly 582 */ 583 if (tvp && tvp != fvp) { 584 error = smbfs_smb_delete(VTOSMB(tvp), &scred); 585 if (error) 586 goto out_cacherem; 587 } 588 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp), 589 tcnp->cn_nameptr, tcnp->cn_namelen, &scred); 590 } 591 592 out_cacherem: 593 smbfs_attr_cacheremove(fdvp); 594 smbfs_attr_cacheremove(tdvp); 595 out: 596 if (tdvp == tvp) 597 vrele(tdvp); 598 else 599 vput(tdvp); 600 if (tvp) 601 vput(tvp); 602 vrele(fdvp); 603 vrele(fvp); 604 #ifdef possible_mistake 605 #error x 606 vgone(fvp); 607 if (tvp) 608 vgone(tvp); 609 #endif 610 return error; 611 } 612 613 /* 614 * somtime it will come true... 615 * 616 * smbfs_link(struct vnode *a_tdvp, struct vnode *a_vp, 617 * struct componentname *a_cnp) 618 */ 619 static int 620 smbfs_link(struct vop_old_link_args *ap) 621 { 622 return EOPNOTSUPP; 623 } 624 625 /* 626 * smbfs_symlink link create call. 627 * Sometime it will be functional... 628 * 629 * smbfs_symlink(struct vnode *a_dvp, struct vnode **a_vpp, 630 * struct componentname *a_cnp, struct vattr *a_vap, 631 * char *a_target) 632 */ 633 static int 634 smbfs_symlink(struct vop_old_symlink_args *ap) 635 { 636 return EOPNOTSUPP; 637 } 638 639 static int 640 smbfs_mknod(struct vop_old_mknod_args *ap) 641 { 642 return EOPNOTSUPP; 643 } 644 645 /* 646 * smbfs_mkdir(struct vnode *a_dvp, struct vnode **a_vpp, 647 * struct componentname *a_cnp, struct vattr *a_vap) 648 */ 649 static int 650 smbfs_mkdir(struct vop_old_mkdir_args *ap) 651 { 652 struct vnode *dvp = ap->a_dvp; 653 /* struct vattr *vap = ap->a_vap;*/ 654 struct vnode *vp; 655 struct componentname *cnp = ap->a_cnp; 656 struct smbnode *dnp = VTOSMB(dvp); 657 struct vattr vattr; 658 struct smb_cred scred; 659 struct smbfattr fattr; 660 char *name = cnp->cn_nameptr; 661 int len = cnp->cn_namelen; 662 int error; 663 664 if ((error = VOP_GETATTR(dvp, &vattr))) { 665 return error; 666 } 667 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) 668 return EEXIST; 669 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 670 error = smbfs_smb_mkdir(dnp, name, len, &scred); 671 if (error) 672 return error; 673 error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred); 674 if (error) 675 return error; 676 error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); 677 if (error) 678 return error; 679 *ap->a_vpp = vp; 680 return 0; 681 } 682 683 /* 684 * smbfs_remove directory call 685 * 686 * smbfs_rmdir(struct vnode *a_dvp, struct vnode *a_vp, 687 * struct componentname *a_cnp) 688 */ 689 static int 690 smbfs_rmdir(struct vop_old_rmdir_args *ap) 691 { 692 struct vnode *vp = ap->a_vp; 693 struct vnode *dvp = ap->a_dvp; 694 struct componentname *cnp = ap->a_cnp; 695 /* struct smbmount *smp = VTOSMBFS(vp);*/ 696 struct smbnode *dnp = VTOSMB(dvp); 697 struct smbnode *np = VTOSMB(vp); 698 struct smb_cred scred; 699 int error; 700 701 if (dvp == vp) 702 return EINVAL; 703 704 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 705 error = smbfs_smb_rmdir(np, &scred); 706 dnp->n_flag |= NMODIFIED; 707 smbfs_attr_cacheremove(dvp); 708 return error; 709 } 710 711 /* 712 * smbfs_readdir call 713 * 714 * smbfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 715 * int *a_eofflag, u_long *a_cookies, int a_ncookies) 716 */ 717 static int 718 smbfs_readdir(struct vop_readdir_args *ap) 719 { 720 struct vnode *vp = ap->a_vp; 721 struct uio *uio = ap->a_uio; 722 int error; 723 724 if (vp->v_type != VDIR) 725 return (EPERM); 726 #ifdef notnow 727 if (ap->a_ncookies) { 728 printf("smbfs_readdir: no support for cookies now..."); 729 return (EOPNOTSUPP); 730 } 731 #endif 732 error = smbfs_readvnode(vp, uio, ap->a_cred); 733 return error; 734 } 735 736 /* 737 * smbfs_fsync(struct vnode *a_vp, struct ucred *a_cred, 738 * int a_waitfor, struct thread *a_td) 739 */ 740 /* ARGSUSED */ 741 static int 742 smbfs_fsync(struct vop_fsync_args *ap) 743 { 744 /* return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_td, 1));*/ 745 return (0); 746 } 747 748 /* 749 * smbfs_print(struct vnode *a_vp) 750 */ 751 static int 752 smbfs_print(struct vop_print_args *ap) 753 { 754 struct vnode *vp = ap->a_vp; 755 struct smbnode *np = VTOSMB(vp); 756 757 if (np == NULL) { 758 printf("no smbnode data\n"); 759 return (0); 760 } 761 printf("tag VT_SMBFS, name = %s, parent = %p, opencount = %d", 762 np->n_name, np->n_parent ? np->n_parent : NULL, 763 np->n_opencount); 764 lockmgr_printinfo(&vp->v_lock); 765 printf("\n"); 766 return (0); 767 } 768 769 /* 770 * smbfs_pathconf(struct vnode *vp, int name, register_t *retval) 771 */ 772 static int 773 smbfs_pathconf(struct vop_pathconf_args *ap) 774 { 775 struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp)); 776 struct smb_vc *vcp = SSTOVC(smp->sm_share); 777 register_t *retval = ap->a_retval; 778 int error = 0; 779 780 switch (ap->a_name) { 781 case _PC_LINK_MAX: 782 *retval = 0; 783 break; 784 case _PC_NAME_MAX: 785 *retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12; 786 break; 787 case _PC_PATH_MAX: 788 *retval = 800; /* XXX: a correct one ? */ 789 break; 790 default: 791 error = EINVAL; 792 } 793 return error; 794 } 795 796 /* 797 * smbfs_strategy(struct vnode *a_vp, struct bio *a_bio) 798 */ 799 static int 800 smbfs_strategy(struct vop_strategy_args *ap) 801 { 802 struct bio *bio = ap->a_bio; 803 struct buf *bp = bio->bio_buf; 804 struct thread *td = NULL; 805 int error = 0; 806 807 SMBVDEBUG("\n"); 808 if ((bp->b_flags & B_ASYNC) == 0) 809 td = curthread; /* XXX */ 810 811 if ((bp->b_flags & B_ASYNC) == 0 ) 812 error = smbfs_doio(ap->a_vp, bio, proc0.p_ucred, td); 813 return error; 814 } 815 816 /* 817 * smbfs_bmap(struct vnode *a_vp, off_t a_loffset, struct vnode **a_vpp, 818 * off_t *a_doffsetp, int *a_runp, int *a_runb) 819 */ 820 static int 821 smbfs_bmap(struct vop_bmap_args *ap) 822 { 823 struct vnode *vp = ap->a_vp; 824 825 if (ap->a_vpp != NULL) 826 *ap->a_vpp = vp; 827 if (ap->a_doffsetp != NULL) 828 *ap->a_doffsetp = ap->a_loffset; 829 if (ap->a_runp != NULL) 830 *ap->a_runp = 0; 831 if (ap->a_runb != NULL) 832 *ap->a_runb = 0; 833 return (0); 834 } 835 836 /* 837 * smbfs_ioctl(struct vnode *a_vp, u_long a_command, caddr_t a_data, 838 * int fflag, struct ucred *cred, struct proc *p) 839 */ 840 int 841 smbfs_ioctl(struct vop_ioctl_args *ap) 842 { 843 return EINVAL; 844 } 845 846 static char smbfs_atl[] = "rhsvda"; 847 static int 848 smbfs_getextattr(struct vop_getextattr_args *ap) 849 /* { 850 IN struct vnode *a_vp; 851 IN char *a_name; 852 INOUT struct uio *a_uio; 853 IN struct ucred *a_cred; 854 IN struct thread *a_td; 855 }; 856 */ 857 { 858 struct vnode *vp = ap->a_vp; 859 struct ucred *cred = ap->a_cred; 860 struct uio *uio = ap->a_uio; 861 const char *name = ap->a_name; 862 struct smbnode *np = VTOSMB(vp); 863 struct vattr vattr; 864 char buf[10]; 865 int i, attr, error; 866 867 error = VOP_ACCESS(vp, VREAD, cred); 868 if (error) 869 return error; 870 error = VOP_GETATTR(vp, &vattr); 871 if (error) 872 return error; 873 if (strcmp(name, "dosattr") == 0) { 874 attr = np->n_dosattr; 875 for (i = 0; i < 6; i++, attr >>= 1) 876 buf[i] = (attr & 1) ? smbfs_atl[i] : '-'; 877 buf[i] = 0; 878 error = uiomove(buf, i, uio); 879 880 } else 881 error = EINVAL; 882 return error; 883 } 884 885 /* 886 * Since we expected to support F_GETLK (and SMB protocol has no such function), 887 * it is necessary to use lf_advlock(). It would be nice if this function had 888 * a callback mechanism because it will help to improve a level of consistency. 889 * 890 * smbfs_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, 891 * struct flock *a_fl, int a_flags) 892 */ 893 int 894 smbfs_advlock(struct vop_advlock_args *ap) 895 { 896 struct vnode *vp = ap->a_vp; 897 struct smbnode *np = VTOSMB(vp); 898 struct flock *fl = ap->a_fl; 899 caddr_t id = (caddr_t)1 /* ap->a_id */; 900 /* int flags = ap->a_flags;*/ 901 struct thread *td = curthread; /* XXX */ 902 struct smb_cred scred; 903 off_t start, end, size; 904 int error, lkop; 905 906 if (vp->v_type == VDIR) { 907 /* 908 * SMB protocol have no support for directory locking. 909 * Although locks can be processed on local machine, I don't 910 * think that this is a good idea, because some programs 911 * can work wrong assuming directory is locked. So, we just 912 * return 'operation not supported 913 */ 914 return EOPNOTSUPP; 915 } 916 size = np->n_size; 917 switch (fl->l_whence) { 918 case SEEK_SET: 919 case SEEK_CUR: 920 start = fl->l_start; 921 break; 922 case SEEK_END: 923 start = fl->l_start + size; 924 default: 925 return EINVAL; 926 } 927 if (start < 0) 928 return EINVAL; 929 if (fl->l_len == 0) 930 end = -1; 931 else { 932 end = start + fl->l_len - 1; 933 if (end < start) 934 return EINVAL; 935 } 936 smb_makescred(&scred, td, td->td_proc ? td->td_proc->p_ucred : NULL); 937 switch (ap->a_op) { 938 case F_SETLK: 939 switch (fl->l_type) { 940 case F_WRLCK: 941 lkop = SMB_LOCK_EXCL; 942 break; 943 case F_RDLCK: 944 lkop = SMB_LOCK_SHARED; 945 break; 946 case F_UNLCK: 947 lkop = SMB_LOCK_RELEASE; 948 break; 949 default: 950 return EINVAL; 951 } 952 error = lf_advlock(ap, &np->n_lockf, size); 953 if (error) 954 break; 955 lkop = SMB_LOCK_EXCL; 956 error = smbfs_smb_lock(np, lkop, id, start, end, &scred); 957 if (error) { 958 ap->a_op = F_UNLCK; 959 lf_advlock(ap, &np->n_lockf, size); 960 } 961 break; 962 case F_UNLCK: 963 lf_advlock(ap, &np->n_lockf, size); 964 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, &scred); 965 break; 966 case F_GETLK: 967 error = lf_advlock(ap, &np->n_lockf, size); 968 break; 969 default: 970 return EINVAL; 971 } 972 return error; 973 } 974 975 static int 976 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop) 977 { 978 static const char *badchars = "*/:<>;?"; 979 static const char *badchars83 = " +|,"; 980 const char *cp; 981 int i, error; 982 983 /* 984 * Backslash characters, being a path delimiter, are prohibited 985 * within a path component even for LOOKUP operations. 986 */ 987 if (index(name, '\\') != NULL) 988 return ENOENT; 989 990 if (nameiop == NAMEI_LOOKUP) 991 return 0; 992 error = ENOENT; 993 if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { 994 /* 995 * Name should conform 8.3 format 996 */ 997 if (nmlen > 12) 998 return ENAMETOOLONG; 999 cp = index(name, '.'); 1000 if (cp == NULL) 1001 return error; 1002 if (cp == name || (cp - name) > 8) 1003 return error; 1004 cp = index(cp + 1, '.'); 1005 if (cp != NULL) 1006 return error; 1007 for (cp = name, i = 0; i < nmlen; i++, cp++) 1008 if (index(badchars83, *cp) != NULL) 1009 return error; 1010 } 1011 for (cp = name, i = 0; i < nmlen; i++, cp++) 1012 if (index(badchars, *cp) != NULL) 1013 return error; 1014 return 0; 1015 } 1016 1017 /* 1018 * Things go even weird without fixed inode numbers... 1019 * 1020 * smbfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 1021 * struct componentname *a_cnp) 1022 */ 1023 int 1024 smbfs_lookup(struct vop_old_lookup_args *ap) 1025 { 1026 struct componentname *cnp = ap->a_cnp; 1027 struct thread *td = cnp->cn_td; 1028 struct vnode *dvp = ap->a_dvp; 1029 struct vnode **vpp = ap->a_vpp; 1030 struct vnode *vp; 1031 struct smbmount *smp; 1032 struct mount *mp = dvp->v_mount; 1033 struct smbnode *dnp; 1034 struct smbfattr fattr, *fap; 1035 struct smb_cred scred; 1036 char *name = cnp->cn_nameptr; 1037 int flags = cnp->cn_flags; 1038 int nameiop = cnp->cn_nameiop; 1039 int nmlen = cnp->cn_namelen; 1040 int lockparent, wantparent, error, isdot; 1041 1042 SMBVDEBUG("\n"); 1043 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 1044 if (dvp->v_type != VDIR) 1045 return ENOTDIR; 1046 if ((flags & CNP_ISDOTDOT) && (dvp->v_flag & VROOT)) { 1047 SMBFSERR("invalid '..'\n"); 1048 return EIO; 1049 } 1050 #ifdef SMB_VNODE_DEBUG 1051 { 1052 char *cp, c; 1053 1054 cp = name + nmlen; 1055 c = *cp; 1056 *cp = 0; 1057 SMBVDEBUG("%d '%s' in '%s' id=d\n", nameiop, name, 1058 VTOSMB(dvp)->n_name); 1059 *cp = c; 1060 } 1061 #endif 1062 if ((mp->mnt_flag & MNT_RDONLY) && nameiop != NAMEI_LOOKUP) 1063 return EROFS; 1064 if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred)) != 0) 1065 return error; 1066 lockparent = flags & CNP_LOCKPARENT; 1067 wantparent = flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 1068 smp = VFSTOSMBFS(mp); 1069 dnp = VTOSMB(dvp); 1070 isdot = (nmlen == 1 && name[0] == '.'); 1071 1072 error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop); 1073 1074 if (error) 1075 return ENOENT; 1076 1077 error = 0; 1078 *vpp = NULLVP; 1079 smb_makescred(&scred, td, cnp->cn_cred); 1080 fap = &fattr; 1081 if (flags & CNP_ISDOTDOT) { 1082 error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, fap, 1083 &scred); 1084 SMBVDEBUG("result of dotdot lookup: %d\n", error); 1085 } else { 1086 fap = &fattr; 1087 error = smbfs_smb_lookup(dnp, name, nmlen, fap, &scred); 1088 /* if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')*/ 1089 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error); 1090 } 1091 if (error && error != ENOENT) 1092 return error; 1093 if (error) { /* entry not found */ 1094 /* 1095 * Handle RENAME or CREATE case... 1096 */ 1097 if ((nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME) && wantparent) { 1098 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1099 if (error) 1100 return error; 1101 if (!lockparent) { 1102 VOP_UNLOCK(dvp, 0); 1103 cnp->cn_flags |= CNP_PDIRUNLOCK; 1104 } 1105 return (EJUSTRETURN); 1106 } 1107 return ENOENT; 1108 }/* else { 1109 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum); 1110 }*/ 1111 /* 1112 * handle DELETE case ... 1113 */ 1114 if (nameiop == NAMEI_DELETE) { /* delete last component */ 1115 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1116 if (error) 1117 return error; 1118 if (isdot) { 1119 vref(dvp); 1120 *vpp = dvp; 1121 return 0; 1122 } 1123 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1124 if (error) 1125 return error; 1126 *vpp = vp; 1127 if (!lockparent) { 1128 VOP_UNLOCK(dvp, 0); 1129 cnp->cn_flags |= CNP_PDIRUNLOCK; 1130 } 1131 return 0; 1132 } 1133 if (nameiop == NAMEI_RENAME && wantparent) { 1134 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1135 if (error) 1136 return error; 1137 if (isdot) 1138 return EISDIR; 1139 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1140 if (error) 1141 return error; 1142 *vpp = vp; 1143 if (!lockparent) { 1144 VOP_UNLOCK(dvp, 0); 1145 cnp->cn_flags |= CNP_PDIRUNLOCK; 1146 } 1147 return 0; 1148 } 1149 if (flags & CNP_ISDOTDOT) { 1150 VOP_UNLOCK(dvp, 0); 1151 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp); 1152 if (error) { 1153 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 1154 return error; 1155 } 1156 if (lockparent) { 1157 error = vn_lock(dvp, LK_EXCLUSIVE); 1158 if (error) { 1159 cnp->cn_flags |= CNP_PDIRUNLOCK; 1160 vput(vp); 1161 return error; 1162 } 1163 } 1164 *vpp = vp; 1165 } else if (isdot) { 1166 vref(dvp); 1167 *vpp = dvp; 1168 } else { 1169 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1170 if (error) 1171 return error; 1172 *vpp = vp; 1173 SMBVDEBUG("lookup: getnewvp!\n"); 1174 if (!lockparent) { 1175 VOP_UNLOCK(dvp, 0); 1176 cnp->cn_flags |= CNP_PDIRUNLOCK; 1177 } 1178 } 1179 return 0; 1180 } 1181