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