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/uio.h> 37 #include <sys/kernel.h> 38 #include <sys/proc.h> 39 #include <sys/priv.h> 40 #include <sys/namei.h> 41 #include <sys/fcntl.h> 42 #include <sys/mount.h> 43 #include <sys/unistd.h> 44 #include <sys/vnode.h> 45 #include <sys/lockf.h> 46 47 #include <vm/vm.h> 48 #include <vm/vm_extern.h> 49 #include <vm/vm_zone.h> 50 51 52 #include <netproto/smb/smb.h> 53 #include <netproto/smb/smb_conn.h> 54 #include <netproto/smb/smb_subr.h> 55 56 #include "smbfs.h" 57 #include "smbfs_node.h" 58 #include "smbfs_subr.h" 59 60 #include <sys/buf.h> 61 62 /* 63 * Prototypes for SMBFS vnode operations 64 */ 65 static int smbfs_create(struct vop_old_create_args *); 66 static int smbfs_mknod(struct vop_old_mknod_args *); 67 static int smbfs_open(struct vop_open_args *); 68 static int smbfs_closel(struct vop_close_args *); 69 static int smbfs_access(struct vop_access_args *); 70 static int smbfs_getattr(struct vop_getattr_args *); 71 static int smbfs_setattr(struct vop_setattr_args *); 72 static int smbfs_read(struct vop_read_args *); 73 static int smbfs_write(struct vop_write_args *); 74 static int smbfs_fsync(struct vop_fsync_args *); 75 static int smbfs_remove(struct vop_old_remove_args *); 76 static int smbfs_link(struct vop_old_link_args *); 77 static int smbfs_lookup(struct vop_old_lookup_args *); 78 static int smbfs_rename(struct vop_old_rename_args *); 79 static int smbfs_mkdir(struct vop_old_mkdir_args *); 80 static int smbfs_rmdir(struct vop_old_rmdir_args *); 81 static int smbfs_symlink(struct vop_old_symlink_args *); 82 static int smbfs_readdir(struct vop_readdir_args *); 83 static int smbfs_bmap(struct vop_bmap_args *); 84 static int smbfs_strategy(struct vop_strategy_args *); 85 static int smbfs_print(struct vop_print_args *); 86 static int smbfs_pathconf(struct vop_pathconf_args *ap); 87 static int smbfs_advlock(struct vop_advlock_args *); 88 static int smbfs_getextattr(struct vop_getextattr_args *ap); 89 90 struct vop_ops smbfs_vnode_vops = { 91 .vop_default = vop_defaultop, 92 .vop_access = smbfs_access, 93 .vop_advlock = smbfs_advlock, 94 .vop_bmap = smbfs_bmap, 95 .vop_close = smbfs_closel, 96 .vop_old_create = smbfs_create, 97 .vop_fsync = smbfs_fsync, 98 .vop_getattr = smbfs_getattr, 99 .vop_getpages = smbfs_getpages, 100 .vop_inactive = smbfs_inactive, 101 .vop_ioctl = smbfs_ioctl, 102 .vop_old_link = smbfs_link, 103 .vop_old_lookup = smbfs_lookup, 104 .vop_old_mkdir = smbfs_mkdir, 105 .vop_old_mknod = smbfs_mknod, 106 .vop_open = smbfs_open, 107 .vop_pathconf = smbfs_pathconf, 108 .vop_print = smbfs_print, 109 .vop_putpages = smbfs_putpages, 110 .vop_read = smbfs_read, 111 .vop_readdir = smbfs_readdir, 112 .vop_reclaim = smbfs_reclaim, 113 .vop_old_remove = smbfs_remove, 114 .vop_old_rename = smbfs_rename, 115 .vop_old_rmdir = smbfs_rmdir, 116 .vop_setattr = smbfs_setattr, 117 .vop_strategy = smbfs_strategy, 118 .vop_old_symlink = smbfs_symlink, 119 .vop_write = smbfs_write, 120 .vop_getextattr = smbfs_getextattr 121 /* .vop_setextattr = smbfs_setextattr */ 122 }; 123 124 /* 125 * smbfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred) 126 */ 127 static int 128 smbfs_access(struct vop_access_args *ap) 129 { 130 struct vnode *vp = ap->a_vp; 131 struct smbmount *smp = VTOSMBFS(vp); 132 int mode; 133 int error; 134 135 SMBVDEBUG("\n"); 136 mode = ((vp->v_type == VREG) ? 137 smp->sm_args.file_mode : smp->sm_args.dir_mode); 138 error = vop_helper_access(ap, smp->sm_args.uid, smp->sm_args.gid, 139 mode, 0); 140 return (error); 141 } 142 143 /* 144 * smbfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 145 * struct file *a_fp) 146 */ 147 /* ARGSUSED */ 148 static int 149 smbfs_open(struct vop_open_args *ap) 150 { 151 struct vnode *vp = ap->a_vp; 152 struct smbnode *np = VTOSMB(vp); 153 struct smb_cred scred; 154 struct vattr vattr; 155 int mode = ap->a_mode; 156 int error, accmode; 157 158 SMBVDEBUG("%s,%d\n", np->n_name, np->n_opencount); 159 if (vp->v_type != VREG && vp->v_type != VDIR) { 160 SMBFSERR("open eacces vtype=%d\n", vp->v_type); 161 return EACCES; 162 } 163 if (vp->v_type == VDIR) { 164 if (np->n_opencount == 0) 165 np->n_cached_cred = crhold(ap->a_cred); 166 np->n_opencount++; 167 return (vop_stdopen(ap)); 168 } 169 if (np->n_flag & NMODIFIED) { 170 if ((error = smbfs_vinvalbuf(vp, V_SAVE, 1)) == EINTR) 171 return error; 172 smbfs_attr_cacheremove(vp); 173 error = VOP_GETATTR(vp, &vattr); 174 if (error) 175 return error; 176 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 177 } else { 178 error = VOP_GETATTR(vp, &vattr); 179 if (error) 180 return error; 181 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { 182 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 183 if (error == EINTR) 184 return error; 185 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 186 } 187 } 188 if (np->n_opencount) { 189 np->n_opencount++; 190 return (vop_stdopen(ap)); 191 } 192 accmode = SMB_AM_OPENREAD; 193 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 194 accmode = SMB_AM_OPENRW; 195 smb_makescred(&scred, curthread, ap->a_cred); 196 error = smbfs_smb_open(np, accmode, &scred); 197 if (error) { 198 if (mode & FWRITE) 199 return EACCES; 200 accmode = SMB_AM_OPENREAD; 201 error = smbfs_smb_open(np, accmode, &scred); 202 } 203 if (!error) { 204 np->n_cached_cred = crhold(ap->a_cred); 205 np->n_opencount++; 206 } 207 smbfs_attr_cacheremove(vp); 208 if (error == 0) 209 vop_stdopen(ap); 210 return error; 211 } 212 213 static int 214 smbfs_closel(struct vop_close_args *ap) 215 { 216 struct vnode *vp = ap->a_vp; 217 struct smbnode *np = VTOSMB(vp); 218 struct smb_cred scred; 219 struct vattr vattr; 220 int error; 221 222 SMBVDEBUG("name=%s, pid=%d, c=%d\n", 223 np->n_name, p->p_pid, np->n_opencount); 224 vn_lock(vp, LK_UPGRADE | LK_RETRY); 225 226 smb_makescred(&scred, curthread, proc0.p_ucred); 227 error = 0; 228 229 if (np->n_opencount == 0) { 230 if (vp->v_type != VDIR) 231 SMBERROR("Negative opencount\n"); 232 goto done; 233 } 234 np->n_opencount--; 235 if (vp->v_type == VDIR) { 236 if (np->n_opencount) 237 goto done; 238 if (np->n_dirseq) { 239 smbfs_findclose(np->n_dirseq, &scred); 240 np->n_dirseq = NULL; 241 } 242 } else { 243 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 244 if (np->n_opencount) 245 goto done; 246 VOP_GETATTR(vp, &vattr); 247 error = smbfs_smb_close(np->n_mount->sm_share, np->n_fid, 248 &np->n_mtime, &scred); 249 } 250 crfree(np->n_cached_cred); 251 np->n_cached_cred = NULL; 252 smbfs_attr_cacheremove(vp); 253 done: 254 vop_stdclose(ap); 255 return error; 256 } 257 258 /* 259 * smbfs_getattr call from vfs. 260 * 261 * smbfs_getattr(struct vnode *a_vp, struct vattr *a_vap) 262 */ 263 static int 264 smbfs_getattr(struct vop_getattr_args *ap) 265 { 266 struct vnode *vp = ap->a_vp; 267 struct smbnode *np = VTOSMB(vp); 268 struct vattr *va=ap->a_vap; 269 struct smbfattr fattr; 270 struct smb_cred scred; 271 u_quad_t oldsize; 272 int error; 273 274 SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_flag & VROOT) != 0); 275 error = smbfs_attr_cachelookup(vp, va); 276 if (!error) 277 return 0; 278 SMBVDEBUG("not in the cache\n"); 279 smb_makescred(&scred, curthread, proc0.p_ucred); 280 oldsize = np->n_size; 281 error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred); 282 if (error) { 283 SMBVDEBUG("error %d\n", error); 284 return error; 285 } 286 smbfs_attr_cacheenter(vp, &fattr); 287 smbfs_attr_cachelookup(vp, va); 288 if (np->n_opencount) 289 np->n_size = oldsize; 290 return 0; 291 } 292 293 /* 294 * smbfs_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred) 295 */ 296 static int 297 smbfs_setattr(struct vop_setattr_args *ap) 298 { 299 struct vnode *vp = ap->a_vp; 300 struct smbnode *np = VTOSMB(vp); 301 struct vattr *vap = ap->a_vap; 302 struct timespec *mtime, *atime; 303 struct smb_cred scred; 304 struct smb_share *ssp = np->n_mount->sm_share; 305 struct smb_vc *vcp = SSTOVC(ssp); 306 u_quad_t tsize = 0; 307 int isreadonly, doclose, error = 0; 308 309 SMBVDEBUG("\n"); 310 if (vap->va_flags != VNOVAL) 311 return EOPNOTSUPP; 312 isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY); 313 /* 314 * Disallow write attempts if the filesystem is mounted read-only. 315 */ 316 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 317 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 318 vap->va_mode != (mode_t)VNOVAL) && isreadonly) 319 return EROFS; 320 smb_makescred(&scred, curthread, ap->a_cred); 321 if (vap->va_size != VNOVAL) { 322 switch (vp->v_type) { 323 case VDIR: 324 return EISDIR; 325 case VREG: 326 break; 327 default: 328 return EINVAL; 329 } 330 if (isreadonly) 331 return EROFS; 332 doclose = 0; 333 vnode_pager_setsize(vp, (u_long)vap->va_size); 334 tsize = np->n_size; 335 np->n_size = vap->va_size; 336 if (np->n_opencount == 0) { 337 error = smbfs_smb_open(np, SMB_AM_OPENRW, &scred); 338 if (error == 0) 339 doclose = 1; 340 } 341 if (error == 0) 342 error = smbfs_smb_setfsize(np, vap->va_size, &scred); 343 if (doclose) 344 smbfs_smb_close(ssp, np->n_fid, NULL, &scred); 345 if (error) { 346 np->n_size = tsize; 347 vnode_pager_setsize(vp, (u_long)tsize); 348 return error; 349 } 350 } 351 mtime = atime = NULL; 352 if (vap->va_mtime.tv_sec != VNOVAL) 353 mtime = &vap->va_mtime; 354 if (vap->va_atime.tv_sec != VNOVAL) 355 atime = &vap->va_atime; 356 if (mtime != atime) { 357 if (ap->a_cred->cr_uid != VTOSMBFS(vp)->sm_args.uid && 358 (error = priv_check_cred(ap->a_cred, PRIV_VFS_SETATTR, 0)) && 359 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 360 (error = VOP_EACCESS(vp, VWRITE, ap->a_cred)))) 361 return (error); 362 #if 0 363 if (mtime == NULL) 364 mtime = &np->n_mtime; 365 if (atime == NULL) 366 atime = &np->n_atime; 367 #endif 368 /* 369 * If file is opened, then we can use handle based calls. 370 * If not, use path based ones. 371 */ 372 if (np->n_opencount == 0) { 373 if (vcp->vc_flags & SMBV_WIN95) { 374 error = VOP_OPEN(vp, FWRITE, ap->a_cred, NULL); 375 if (!error) { 376 /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 377 VOP_GETATTR(vp, &vattr);*/ 378 if (mtime) 379 np->n_mtime = *mtime; 380 VOP_CLOSE(vp, FWRITE, NULL); 381 } 382 } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) { 383 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 384 /* error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);*/ 385 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) { 386 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 387 } else { 388 error = smbfs_smb_setpattr(np, 0, mtime, &scred); 389 } 390 } else { 391 if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) { 392 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 393 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) { 394 error = smbfs_smb_setftime(np, mtime, atime, &scred); 395 } else { 396 /* 397 * I have no idea how to handle this for core 398 * level servers. The possible solution is to 399 * update mtime after file is closed. 400 */ 401 SMBERROR("can't update times on an opened file\n"); 402 } 403 } 404 } 405 /* 406 * Invalidate attribute cache in case if server doesn't set 407 * required attributes. 408 */ 409 smbfs_attr_cacheremove(vp); /* invalidate cache */ 410 VOP_GETATTR(vp, vap); 411 np->n_mtime.tv_sec = vap->va_mtime.tv_sec; 412 return error; 413 } 414 /* 415 * smbfs_read call. 416 * 417 * smbfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 418 * struct ucred *a_cred) 419 */ 420 static int 421 smbfs_read(struct vop_read_args *ap) 422 { 423 struct vnode *vp = ap->a_vp; 424 struct uio *uio = ap->a_uio; 425 426 SMBVDEBUG("\n"); 427 if (vp->v_type != VREG && vp->v_type != VDIR) 428 return EPERM; 429 return smbfs_readvnode(vp, uio, ap->a_cred); 430 } 431 432 /* 433 * smbfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 434 * struct ucred *a_cred) 435 */ 436 static int 437 smbfs_write(struct vop_write_args *ap) 438 { 439 struct vnode *vp = ap->a_vp; 440 struct uio *uio = ap->a_uio; 441 442 SMBVDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid); 443 if (vp->v_type != VREG) 444 return (EPERM); 445 return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag); 446 } 447 /* 448 * smbfs_create call 449 * Create a regular file. On entry the directory to contain the file being 450 * created is locked. We must release before we return. 451 * 452 * smbfs_create(struct vnode *a_dvp, struct vnode **a_vpp, 453 * struct componentname *a_cnp, struct vattr *a_vap) 454 */ 455 static int 456 smbfs_create(struct vop_old_create_args *ap) 457 { 458 struct vnode *dvp = ap->a_dvp; 459 struct vattr *vap = ap->a_vap; 460 struct vnode **vpp=ap->a_vpp; 461 struct componentname *cnp = ap->a_cnp; 462 struct smbnode *dnp = VTOSMB(dvp); 463 struct vnode *vp; 464 struct vattr vattr; 465 struct smbfattr fattr; 466 struct smb_cred scred; 467 char *name = cnp->cn_nameptr; 468 int nmlen = cnp->cn_namelen; 469 int error; 470 471 472 SMBVDEBUG("\n"); 473 *vpp = NULL; 474 if (vap->va_type != VREG) 475 return EOPNOTSUPP; 476 if ((error = VOP_GETATTR(dvp, &vattr))) 477 return error; 478 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 479 480 error = smbfs_smb_create(dnp, name, nmlen, &scred); 481 if (error) 482 return error; 483 error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); 484 if (error) 485 return error; 486 error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp); 487 if (error) 488 return error; 489 *vpp = vp; 490 return error; 491 } 492 493 /* 494 * smbfs_remove(struct vnode *a_dvp, struct vnode *a_vp, 495 * struct componentname *a_cnp) 496 */ 497 static int 498 smbfs_remove(struct vop_old_remove_args *ap) 499 { 500 struct vnode *vp = ap->a_vp; 501 /* struct vnode *dvp = ap->a_dvp;*/ 502 struct componentname *cnp = ap->a_cnp; 503 struct smbnode *np = VTOSMB(vp); 504 struct smb_cred scred; 505 int error; 506 507 if (vp->v_type == VDIR || np->n_opencount || VREFCNT(vp) > 1) 508 return EPERM; 509 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 510 error = smbfs_smb_delete(np, &scred); 511 return error; 512 } 513 514 /* 515 * smbfs_file rename call 516 * 517 * smbfs_rename(struct vnode *a_fdvp, struct vnode *a_fvp, 518 * struct componentname *a_fcnp, struct vnode *a_tdvp, 519 * struct vnode *a_tvp, struct componentname *a_tcnp) 520 */ 521 static int 522 smbfs_rename(struct vop_old_rename_args *ap) 523 { 524 struct vnode *fvp = ap->a_fvp; 525 struct vnode *tvp = ap->a_tvp; 526 struct vnode *fdvp = ap->a_fdvp; 527 struct vnode *tdvp = ap->a_tdvp; 528 struct componentname *tcnp = ap->a_tcnp; 529 /* struct componentname *fcnp = ap->a_fcnp;*/ 530 struct smb_cred scred; 531 u_int16_t flags = 6; 532 int error=0; 533 534 /* Check for cross-device rename */ 535 if ((fvp->v_mount != tdvp->v_mount) || 536 (tvp && (fvp->v_mount != tvp->v_mount))) { 537 error = EXDEV; 538 goto out; 539 } 540 541 if (tvp && VREFCNT(tvp) > 1) { 542 error = EBUSY; 543 goto out; 544 } 545 flags = 0x10; /* verify all writes */ 546 if (fvp->v_type == VDIR) { 547 flags |= 2; 548 } else if (fvp->v_type == VREG) { 549 flags |= 1; 550 } else { 551 error = EINVAL; 552 goto out; 553 } 554 smb_makescred(&scred, tcnp->cn_td, tcnp->cn_cred); 555 /* 556 * It seems that Samba doesn't implement SMB_COM_MOVE call... 557 */ 558 #ifdef notnow 559 if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { 560 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp), 561 tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); 562 } else 563 #endif 564 { 565 /* 566 * We have to do the work atomicaly 567 */ 568 if (tvp && tvp != fvp) { 569 error = smbfs_smb_delete(VTOSMB(tvp), &scred); 570 if (error) 571 goto out_cacherem; 572 } 573 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp), 574 tcnp->cn_nameptr, tcnp->cn_namelen, 575 &scred); 576 if (error == 0) { 577 smbfs_attr_cacherename(fvp, 578 tcnp->cn_nameptr, 579 tcnp->cn_namelen); 580 } 581 } 582 583 out_cacherem: 584 smbfs_attr_cacheremove(fdvp); 585 smbfs_attr_cacheremove(tdvp); 586 out: 587 if (tdvp == tvp) 588 vrele(tdvp); 589 else 590 vput(tdvp); 591 if (tvp) 592 vput(tvp); 593 vrele(fdvp); 594 vrele(fvp); 595 #ifdef possible_mistake 596 #error x 597 vgone_vxlocked(fvp); 598 if (tvp) 599 vgone_vxlocked(tvp); 600 #endif 601 return error; 602 } 603 604 /* 605 * somtime it will come true... 606 * 607 * smbfs_link(struct vnode *a_tdvp, struct vnode *a_vp, 608 * struct componentname *a_cnp) 609 */ 610 static int 611 smbfs_link(struct vop_old_link_args *ap) 612 { 613 return EOPNOTSUPP; 614 } 615 616 /* 617 * smbfs_symlink link create call. 618 * Sometime it will be functional... 619 * 620 * smbfs_symlink(struct vnode *a_dvp, struct vnode **a_vpp, 621 * struct componentname *a_cnp, struct vattr *a_vap, 622 * char *a_target) 623 */ 624 static int 625 smbfs_symlink(struct vop_old_symlink_args *ap) 626 { 627 return EOPNOTSUPP; 628 } 629 630 static int 631 smbfs_mknod(struct vop_old_mknod_args *ap) 632 { 633 return EOPNOTSUPP; 634 } 635 636 /* 637 * smbfs_mkdir(struct vnode *a_dvp, struct vnode **a_vpp, 638 * struct componentname *a_cnp, struct vattr *a_vap) 639 */ 640 static int 641 smbfs_mkdir(struct vop_old_mkdir_args *ap) 642 { 643 struct vnode *dvp = ap->a_dvp; 644 /* struct vattr *vap = ap->a_vap;*/ 645 struct vnode *vp; 646 struct componentname *cnp = ap->a_cnp; 647 struct smbnode *dnp = VTOSMB(dvp); 648 struct vattr vattr; 649 struct smb_cred scred; 650 struct smbfattr fattr; 651 char *name = cnp->cn_nameptr; 652 int len = cnp->cn_namelen; 653 int error; 654 655 if ((error = VOP_GETATTR(dvp, &vattr))) { 656 return error; 657 } 658 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) 659 return EEXIST; 660 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 661 error = smbfs_smb_mkdir(dnp, name, len, &scred); 662 if (error) 663 return error; 664 error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred); 665 if (error) 666 return error; 667 error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); 668 if (error) 669 return error; 670 *ap->a_vpp = vp; 671 return 0; 672 } 673 674 /* 675 * smbfs_remove directory call 676 * 677 * smbfs_rmdir(struct vnode *a_dvp, struct vnode *a_vp, 678 * struct componentname *a_cnp) 679 */ 680 static int 681 smbfs_rmdir(struct vop_old_rmdir_args *ap) 682 { 683 struct vnode *vp = ap->a_vp; 684 struct vnode *dvp = ap->a_dvp; 685 struct componentname *cnp = ap->a_cnp; 686 /* struct smbmount *smp = VTOSMBFS(vp);*/ 687 struct smbnode *dnp = VTOSMB(dvp); 688 struct smbnode *np = VTOSMB(vp); 689 struct smb_cred scred; 690 int error; 691 692 if (dvp == vp) 693 return EINVAL; 694 695 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 696 error = smbfs_smb_rmdir(np, &scred); 697 dnp->n_flag |= NMODIFIED; 698 smbfs_attr_cacheremove(dvp); 699 return error; 700 } 701 702 /* 703 * smbfs_readdir call 704 * 705 * smbfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 706 * int *a_eofflag, off_t *a_cookies, int a_ncookies) 707 */ 708 static int 709 smbfs_readdir(struct vop_readdir_args *ap) 710 { 711 struct vnode *vp = ap->a_vp; 712 struct uio *uio = ap->a_uio; 713 int error; 714 715 if (vp->v_type != VDIR) 716 return (EPERM); 717 #ifdef notnow 718 if (ap->a_ncookies) { 719 kprintf("smbfs_readdir: no support for cookies now..."); 720 return (EOPNOTSUPP); 721 } 722 #endif 723 error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY | LK_FAILRECLAIM); 724 if (error == 0) { 725 error = smbfs_readvnode(vp, uio, ap->a_cred); 726 vn_unlock(vp); 727 } 728 return error; 729 } 730 731 /* 732 * smbfs_fsync(struct vnode *a_vp, int a_waitfor) 733 */ 734 /* ARGSUSED */ 735 static int 736 smbfs_fsync(struct vop_fsync_args *ap) 737 { 738 /* return (smb_flush(ap->a_vp, ap->a_waitfor, curthread, 1));*/ 739 return (0); 740 } 741 742 /* 743 * smbfs_print(struct vnode *a_vp) 744 */ 745 static int 746 smbfs_print(struct vop_print_args *ap) 747 { 748 struct vnode *vp = ap->a_vp; 749 struct smbnode *np = VTOSMB(vp); 750 751 if (np == NULL) { 752 kprintf("no smbnode data\n"); 753 return (0); 754 } 755 kprintf("tag VT_SMBFS, name = %s, parent = %p, opencount = %d", 756 np->n_name, np->n_parent ? np->n_parent : NULL, 757 np->n_opencount); 758 lockmgr_printinfo(&vp->v_lock); 759 kprintf("\n"); 760 return (0); 761 } 762 763 /* 764 * smbfs_pathconf(struct vnode *vp, int name, register_t *retval) 765 */ 766 static int 767 smbfs_pathconf(struct vop_pathconf_args *ap) 768 { 769 struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp)); 770 struct smb_vc *vcp = SSTOVC(smp->sm_share); 771 register_t *retval = ap->a_retval; 772 int error = 0; 773 774 switch (ap->a_name) { 775 case _PC_LINK_MAX: 776 *retval = 0; 777 break; 778 case _PC_NAME_MAX: 779 *retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12; 780 break; 781 case _PC_PATH_MAX: 782 *retval = 800; /* XXX: a correct one ? */ 783 break; 784 default: 785 error = EINVAL; 786 } 787 return error; 788 } 789 790 /* 791 * smbfs_strategy(struct vnode *a_vp, struct bio *a_bio) 792 */ 793 static int 794 smbfs_strategy(struct vop_strategy_args *ap) 795 { 796 struct bio *bio = ap->a_bio; 797 struct thread *td = NULL; 798 int error = 0; 799 800 SMBVDEBUG("\n"); 801 if (bio->bio_flags & BIO_SYNC) 802 td = curthread; /* XXX */ 803 804 if (bio->bio_flags & BIO_SYNC) 805 error = smbfs_doio(ap->a_vp, bio, proc0.p_ucred, td); 806 return error; 807 } 808 809 /* 810 * smbfs_bmap(struct vnode *a_vp, off_t a_loffset, 811 * off_t *a_doffsetp, int *a_runp, int *a_runb) 812 */ 813 static int 814 smbfs_bmap(struct vop_bmap_args *ap) 815 { 816 if (ap->a_doffsetp != NULL) 817 *ap->a_doffsetp = ap->a_loffset; 818 if (ap->a_runp != NULL) 819 *ap->a_runp = 0; 820 if (ap->a_runb != NULL) 821 *ap->a_runb = 0; 822 return (0); 823 } 824 825 /* 826 * smbfs_ioctl(struct vnode *a_vp, u_long a_command, caddr_t a_data, 827 * int fflag, struct ucred *cred, struct proc *p) 828 */ 829 int 830 smbfs_ioctl(struct vop_ioctl_args *ap) 831 { 832 return EINVAL; 833 } 834 835 static char smbfs_atl[] = "rhsvda"; 836 837 /* 838 * smbfs_getextattr(struct vnode *a_vp, char *a_name, struct uio *a_uio, 839 * struct ucred *a_cred) 840 */ 841 static int 842 smbfs_getextattr(struct vop_getextattr_args *ap) 843 { 844 struct vnode *vp = ap->a_vp; 845 struct ucred *cred = ap->a_cred; 846 struct uio *uio = ap->a_uio; 847 const char *name = ap->a_attrname; 848 struct smbnode *np = VTOSMB(vp); 849 struct vattr vattr; 850 char buf[10]; 851 int i, attr, error; 852 853 error = VOP_EACCESS(vp, VREAD, cred); 854 if (error) 855 return error; 856 error = VOP_GETATTR(vp, &vattr); 857 if (error) 858 return error; 859 if (strcmp(name, "dosattr") == 0) { 860 attr = np->n_dosattr; 861 for (i = 0; i < 6; i++, attr >>= 1) 862 buf[i] = (attr & 1) ? smbfs_atl[i] : '-'; 863 buf[i] = 0; 864 error = uiomove(buf, i, uio); 865 866 } else 867 error = EINVAL; 868 return error; 869 } 870 871 /* 872 * Since we expected to support F_GETLK (and SMB protocol has no such function), 873 * it is necessary to use lf_advlock(). It would be nice if this function had 874 * a callback mechanism because it will help to improve a level of consistency. 875 * 876 * smbfs_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, 877 * struct flock *a_fl, int a_flags) 878 */ 879 int 880 smbfs_advlock(struct vop_advlock_args *ap) 881 { 882 struct vnode *vp = ap->a_vp; 883 struct smbnode *np = VTOSMB(vp); 884 struct flock *fl = ap->a_fl; 885 caddr_t id = (caddr_t)1 /* ap->a_id */; 886 /* int flags = ap->a_flags;*/ 887 struct thread *td = curthread; /* XXX */ 888 struct smb_cred scred; 889 off_t start, end, size; 890 int error, lkop; 891 892 if (vp->v_type == VDIR) { 893 /* 894 * SMB protocol have no support for directory locking. 895 * Although locks can be processed on local machine, I don't 896 * think that this is a good idea, because some programs 897 * can work wrong assuming directory is locked. So, we just 898 * return 'operation not supported 899 */ 900 return EOPNOTSUPP; 901 } 902 size = np->n_size; 903 switch (fl->l_whence) { 904 case SEEK_SET: 905 case SEEK_CUR: 906 start = fl->l_start; 907 break; 908 case SEEK_END: 909 start = fl->l_start + size; 910 default: 911 return EINVAL; 912 } 913 if (start < 0) 914 return EINVAL; 915 if (fl->l_len == 0) 916 end = -1; 917 else { 918 end = start + fl->l_len - 1; 919 if (end < start) 920 return EINVAL; 921 } 922 smb_makescred(&scred, td, td->td_proc ? td->td_proc->p_ucred : NULL); 923 switch (ap->a_op) { 924 case F_SETLK: 925 switch (fl->l_type) { 926 case F_WRLCK: 927 lkop = SMB_LOCK_EXCL; 928 break; 929 case F_RDLCK: 930 lkop = SMB_LOCK_SHARED; 931 break; 932 case F_UNLCK: 933 lkop = SMB_LOCK_RELEASE; 934 break; 935 default: 936 return EINVAL; 937 } 938 error = lf_advlock(ap, &np->n_lockf, size); 939 if (error) 940 break; 941 lkop = SMB_LOCK_EXCL; 942 error = smbfs_smb_lock(np, lkop, id, start, end, &scred); 943 if (error) { 944 ap->a_op = F_UNLCK; 945 lf_advlock(ap, &np->n_lockf, size); 946 } 947 break; 948 case F_UNLCK: 949 lf_advlock(ap, &np->n_lockf, size); 950 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, &scred); 951 break; 952 case F_GETLK: 953 error = lf_advlock(ap, &np->n_lockf, size); 954 break; 955 default: 956 return EINVAL; 957 } 958 return error; 959 } 960 961 static int 962 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop) 963 { 964 static const char *badchars = "*/:<>;?"; 965 static const char *badchars83 = " +|,"; 966 const char *cp; 967 int i, error; 968 969 /* 970 * Backslash characters, being a path delimiter, are prohibited 971 * within a path component even for LOOKUP operations. 972 */ 973 if (index(name, '\\') != NULL) 974 return ENOENT; 975 976 if (nameiop == NAMEI_LOOKUP) 977 return 0; 978 error = ENOENT; 979 if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { 980 /* 981 * Name should conform 8.3 format 982 */ 983 if (nmlen > 12) 984 return ENAMETOOLONG; 985 cp = index(name, '.'); 986 if (cp == NULL) 987 return error; 988 if (cp == name || (cp - name) > 8) 989 return error; 990 cp = index(cp + 1, '.'); 991 if (cp != NULL) 992 return error; 993 for (cp = name, i = 0; i < nmlen; i++, cp++) 994 if (index(badchars83, *cp) != NULL) 995 return error; 996 } 997 for (cp = name, i = 0; i < nmlen; i++, cp++) 998 if (index(badchars, *cp) != NULL) 999 return error; 1000 return 0; 1001 } 1002 1003 /* 1004 * Things go even weird without fixed inode numbers... 1005 * 1006 * smbfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 1007 * struct componentname *a_cnp) 1008 */ 1009 int 1010 smbfs_lookup(struct vop_old_lookup_args *ap) 1011 { 1012 struct componentname *cnp = ap->a_cnp; 1013 struct thread *td = cnp->cn_td; 1014 struct vnode *dvp = ap->a_dvp; 1015 struct vnode **vpp = ap->a_vpp; 1016 struct vnode *vp; 1017 struct smbmount *smp; 1018 struct mount *mp = dvp->v_mount; 1019 struct smbnode *dnp; 1020 struct smbfattr fattr, *fap; 1021 struct smb_cred scred; 1022 char *name = cnp->cn_nameptr; 1023 int flags = cnp->cn_flags; 1024 int nameiop = cnp->cn_nameiop; 1025 int nmlen = cnp->cn_namelen; 1026 int lockparent, wantparent, error, isdot; 1027 1028 SMBVDEBUG("\n"); 1029 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 1030 *vpp = NULL; 1031 if (dvp->v_type != VDIR) 1032 return ENOTDIR; 1033 if ((flags & CNP_ISDOTDOT) && (dvp->v_flag & VROOT)) { 1034 SMBFSERR("invalid '..'\n"); 1035 return EIO; 1036 } 1037 #ifdef SMB_VNODE_DEBUG 1038 { 1039 char *cp, c; 1040 1041 cp = name + nmlen; 1042 c = *cp; 1043 *cp = 0; 1044 SMBVDEBUG("%d '%s' in '%s' id=d\n", nameiop, name, 1045 VTOSMB(dvp)->n_name); 1046 *cp = c; 1047 } 1048 #endif 1049 if ((mp->mnt_flag & MNT_RDONLY) && nameiop != NAMEI_LOOKUP) 1050 return EROFS; 1051 if ((error = VOP_EACCESS(dvp, VEXEC, cnp->cn_cred)) != 0) 1052 return error; 1053 lockparent = flags & CNP_LOCKPARENT; 1054 wantparent = flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 1055 smp = VFSTOSMBFS(mp); 1056 dnp = VTOSMB(dvp); 1057 isdot = (nmlen == 1 && name[0] == '.'); 1058 1059 error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop); 1060 1061 if (error) 1062 return ENOENT; 1063 1064 error = 0; 1065 smb_makescred(&scred, td, cnp->cn_cred); 1066 fap = &fattr; 1067 if (flags & CNP_ISDOTDOT) { 1068 error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, fap, 1069 &scred); 1070 SMBVDEBUG("result of dotdot lookup: %d\n", error); 1071 } else { 1072 fap = &fattr; 1073 error = smbfs_smb_lookup(dnp, name, nmlen, fap, &scred); 1074 /* if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')*/ 1075 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error); 1076 } 1077 if (error && error != ENOENT) 1078 return error; 1079 if (error) { /* entry not found */ 1080 /* 1081 * Handle RENAME or CREATE case... 1082 */ 1083 if ((nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME) && wantparent) { 1084 error = VOP_EACCESS(dvp, VWRITE, cnp->cn_cred); 1085 if (error) 1086 return error; 1087 if (!lockparent) { 1088 vn_unlock(dvp); 1089 cnp->cn_flags |= CNP_PDIRUNLOCK; 1090 } 1091 return (EJUSTRETURN); 1092 } 1093 return ENOENT; 1094 }/* else { 1095 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum); 1096 }*/ 1097 /* 1098 * handle DELETE case ... 1099 */ 1100 if (nameiop == NAMEI_DELETE) { /* delete last component */ 1101 error = VOP_EACCESS(dvp, VWRITE, cnp->cn_cred); 1102 if (error) 1103 return error; 1104 if (isdot) { 1105 vref(dvp); 1106 *vpp = dvp; 1107 return 0; 1108 } 1109 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1110 if (error) 1111 return error; 1112 *vpp = vp; 1113 if (!lockparent) { 1114 vn_unlock(dvp); 1115 cnp->cn_flags |= CNP_PDIRUNLOCK; 1116 } 1117 return 0; 1118 } 1119 if (nameiop == NAMEI_RENAME && wantparent) { 1120 error = VOP_EACCESS(dvp, VWRITE, cnp->cn_cred); 1121 if (error) 1122 return error; 1123 if (isdot) 1124 return EISDIR; 1125 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1126 if (error) 1127 return error; 1128 *vpp = vp; 1129 if (!lockparent) { 1130 vn_unlock(dvp); 1131 cnp->cn_flags |= CNP_PDIRUNLOCK; 1132 } 1133 return 0; 1134 } 1135 if (flags & CNP_ISDOTDOT) { 1136 vn_unlock(dvp); 1137 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp); 1138 if (error) { 1139 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 1140 return error; 1141 } 1142 if (lockparent) { 1143 error = vn_lock(dvp, LK_EXCLUSIVE | LK_FAILRECLAIM); 1144 if (error) { 1145 cnp->cn_flags |= CNP_PDIRUNLOCK; 1146 vput(vp); 1147 return error; 1148 } 1149 } 1150 *vpp = vp; 1151 } else if (isdot) { 1152 vref(dvp); 1153 *vpp = dvp; 1154 } else { 1155 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1156 if (error) 1157 return error; 1158 *vpp = vp; 1159 SMBVDEBUG("lookup: getnewvp!\n"); 1160 if (!lockparent) { 1161 vn_unlock(dvp); 1162 cnp->cn_flags |= CNP_PDIRUNLOCK; 1163 } 1164 } 1165 return 0; 1166 } 1167