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 1.41 2007/11/20 21:03:50 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/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 ucred *cred = ap->a_cred; 132 u_int mode = ap->a_mode; 133 struct smbmount *smp = VTOSMBFS(vp); 134 int error = 0; 135 136 SMBVDEBUG("\n"); 137 if ((mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) { 138 switch (vp->v_type) { 139 case VREG: case VDIR: case VLNK: 140 return EROFS; 141 default: 142 break; 143 } 144 } 145 if (cred->cr_uid == 0) 146 return 0; 147 if (cred->cr_uid != smp->sm_args.uid) { 148 mode >>= 3; 149 if (!groupmember(smp->sm_args.gid, cred)) 150 mode >>= 3; 151 } else if (mode & VOWN) { 152 return (0); 153 } 154 error = (((vp->v_type == VREG) ? smp->sm_args.file_mode : smp->sm_args.dir_mode) & mode) == mode ? 0 : EACCES; 155 return error; 156 } 157 158 /* 159 * smbfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 160 * struct file *a_fp) 161 */ 162 /* ARGSUSED */ 163 static int 164 smbfs_open(struct vop_open_args *ap) 165 { 166 struct vnode *vp = ap->a_vp; 167 struct smbnode *np = VTOSMB(vp); 168 struct smb_cred scred; 169 struct vattr vattr; 170 int mode = ap->a_mode; 171 int error, accmode; 172 173 SMBVDEBUG("%s,%d\n", np->n_name, np->n_opencount); 174 if (vp->v_type != VREG && vp->v_type != VDIR) { 175 SMBFSERR("open eacces vtype=%d\n", vp->v_type); 176 return EACCES; 177 } 178 if (vp->v_type == VDIR) { 179 if (np->n_opencount == 0) 180 np->n_cached_cred = crhold(ap->a_cred); 181 np->n_opencount++; 182 return (vop_stdopen(ap)); 183 } 184 if (np->n_flag & NMODIFIED) { 185 if ((error = smbfs_vinvalbuf(vp, V_SAVE, 1)) == EINTR) 186 return error; 187 smbfs_attr_cacheremove(vp); 188 error = VOP_GETATTR(vp, &vattr); 189 if (error) 190 return error; 191 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 192 } else { 193 error = VOP_GETATTR(vp, &vattr); 194 if (error) 195 return error; 196 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { 197 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 198 if (error == EINTR) 199 return error; 200 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 201 } 202 } 203 if (np->n_opencount) { 204 np->n_opencount++; 205 return (vop_stdopen(ap)); 206 } 207 accmode = SMB_AM_OPENREAD; 208 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 209 accmode = SMB_AM_OPENRW; 210 smb_makescred(&scred, curthread, ap->a_cred); 211 error = smbfs_smb_open(np, accmode, &scred); 212 if (error) { 213 if (mode & FWRITE) 214 return EACCES; 215 accmode = SMB_AM_OPENREAD; 216 error = smbfs_smb_open(np, accmode, &scred); 217 } 218 if (!error) { 219 np->n_cached_cred = crhold(ap->a_cred); 220 np->n_opencount++; 221 } 222 smbfs_attr_cacheremove(vp); 223 if (error == 0) 224 vop_stdopen(ap); 225 return error; 226 } 227 228 static int 229 smbfs_closel(struct vop_close_args *ap) 230 { 231 struct vnode *vp = ap->a_vp; 232 struct smbnode *np = VTOSMB(vp); 233 struct smb_cred scred; 234 struct vattr vattr; 235 int error; 236 237 SMBVDEBUG("name=%s, pid=%d, c=%d\n",np->n_name, p->p_pid, np->n_opencount); 238 239 smb_makescred(&scred, curthread, proc0.p_ucred); 240 error = 0; 241 242 if (np->n_opencount == 0) { 243 if (vp->v_type != VDIR) 244 SMBERROR("Negative opencount\n"); 245 goto done; 246 } 247 np->n_opencount--; 248 if (vp->v_type == VDIR) { 249 if (np->n_opencount) 250 goto done; 251 if (np->n_dirseq) { 252 smbfs_findclose(np->n_dirseq, &scred); 253 np->n_dirseq = NULL; 254 } 255 } else { 256 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 257 if (np->n_opencount) 258 goto done; 259 VOP_GETATTR(vp, &vattr); 260 error = smbfs_smb_close(np->n_mount->sm_share, np->n_fid, 261 &np->n_mtime, &scred); 262 } 263 crfree(np->n_cached_cred); 264 np->n_cached_cred = NULL; 265 smbfs_attr_cacheremove(vp); 266 done: 267 vop_stdclose(ap); 268 return error; 269 } 270 271 /* 272 * smbfs_getattr call from vfs. 273 * 274 * smbfs_getattr(struct vnode *a_vp, struct vattr *a_vap) 275 */ 276 static int 277 smbfs_getattr(struct vop_getattr_args *ap) 278 { 279 struct vnode *vp = ap->a_vp; 280 struct smbnode *np = VTOSMB(vp); 281 struct vattr *va=ap->a_vap; 282 struct smbfattr fattr; 283 struct smb_cred scred; 284 u_quad_t oldsize; 285 int error; 286 287 SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_flag & VROOT) != 0); 288 error = smbfs_attr_cachelookup(vp, va); 289 if (!error) 290 return 0; 291 SMBVDEBUG("not in the cache\n"); 292 smb_makescred(&scred, curthread, proc0.p_ucred); 293 oldsize = np->n_size; 294 error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred); 295 if (error) { 296 SMBVDEBUG("error %d\n", error); 297 return error; 298 } 299 smbfs_attr_cacheenter(vp, &fattr); 300 smbfs_attr_cachelookup(vp, va); 301 if (np->n_opencount) 302 np->n_size = oldsize; 303 return 0; 304 } 305 306 /* 307 * smbfs_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred) 308 */ 309 static int 310 smbfs_setattr(struct vop_setattr_args *ap) 311 { 312 struct vnode *vp = ap->a_vp; 313 struct smbnode *np = VTOSMB(vp); 314 struct vattr *vap = ap->a_vap; 315 struct timespec *mtime, *atime; 316 struct smb_cred scred; 317 struct smb_share *ssp = np->n_mount->sm_share; 318 struct smb_vc *vcp = SSTOVC(ssp); 319 u_quad_t tsize = 0; 320 int isreadonly, doclose, error = 0; 321 322 SMBVDEBUG("\n"); 323 if (vap->va_flags != VNOVAL) 324 return EOPNOTSUPP; 325 isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY); 326 /* 327 * Disallow write attempts if the filesystem is mounted read-only. 328 */ 329 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 330 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 331 vap->va_mode != (mode_t)VNOVAL) && isreadonly) 332 return EROFS; 333 smb_makescred(&scred, curthread, ap->a_cred); 334 if (vap->va_size != VNOVAL) { 335 switch (vp->v_type) { 336 case VDIR: 337 return EISDIR; 338 case VREG: 339 break; 340 default: 341 return EINVAL; 342 }; 343 if (isreadonly) 344 return EROFS; 345 doclose = 0; 346 vnode_pager_setsize(vp, (u_long)vap->va_size); 347 tsize = np->n_size; 348 np->n_size = vap->va_size; 349 if (np->n_opencount == 0) { 350 error = smbfs_smb_open(np, SMB_AM_OPENRW, &scred); 351 if (error == 0) 352 doclose = 1; 353 } 354 if (error == 0) 355 error = smbfs_smb_setfsize(np, vap->va_size, &scred); 356 if (doclose) 357 smbfs_smb_close(ssp, np->n_fid, NULL, &scred); 358 if (error) { 359 np->n_size = tsize; 360 vnode_pager_setsize(vp, (u_long)tsize); 361 return error; 362 } 363 } 364 mtime = atime = NULL; 365 if (vap->va_mtime.tv_sec != VNOVAL) 366 mtime = &vap->va_mtime; 367 if (vap->va_atime.tv_sec != VNOVAL) 368 atime = &vap->va_atime; 369 if (mtime != atime) { 370 if (ap->a_cred->cr_uid != VTOSMBFS(vp)->sm_args.uid && 371 (error = priv_check_cred(ap->a_cred, PRIV_ROOT, PRISON_ROOT)) && 372 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 373 (error = VOP_ACCESS(vp, VWRITE, ap->a_cred)))) 374 return (error); 375 #if 0 376 if (mtime == NULL) 377 mtime = &np->n_mtime; 378 if (atime == NULL) 379 atime = &np->n_atime; 380 #endif 381 /* 382 * If file is opened, then we can use handle based calls. 383 * If not, use path based ones. 384 */ 385 if (np->n_opencount == 0) { 386 if (vcp->vc_flags & SMBV_WIN95) { 387 error = VOP_OPEN(vp, FWRITE, ap->a_cred, NULL); 388 if (!error) { 389 /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 390 VOP_GETATTR(vp, &vattr);*/ 391 if (mtime) 392 np->n_mtime = *mtime; 393 VOP_CLOSE(vp, FWRITE); 394 } 395 } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) { 396 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 397 /* error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);*/ 398 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) { 399 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 400 } else { 401 error = smbfs_smb_setpattr(np, 0, mtime, &scred); 402 } 403 } else { 404 if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) { 405 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 406 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) { 407 error = smbfs_smb_setftime(np, mtime, atime, &scred); 408 } else { 409 /* 410 * I have no idea how to handle this for core 411 * level servers. The possible solution is to 412 * update mtime after file is closed. 413 */ 414 SMBERROR("can't update times on an opened file\n"); 415 } 416 } 417 } 418 /* 419 * Invalidate attribute cache in case if server doesn't set 420 * required attributes. 421 */ 422 smbfs_attr_cacheremove(vp); /* invalidate cache */ 423 VOP_GETATTR(vp, vap); 424 np->n_mtime.tv_sec = vap->va_mtime.tv_sec; 425 return error; 426 } 427 /* 428 * smbfs_read call. 429 * 430 * smbfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 431 * struct ucred *a_cred) 432 */ 433 static int 434 smbfs_read(struct vop_read_args *ap) 435 { 436 struct vnode *vp = ap->a_vp; 437 struct uio *uio = ap->a_uio; 438 439 SMBVDEBUG("\n"); 440 if (vp->v_type != VREG && vp->v_type != VDIR) 441 return EPERM; 442 return smbfs_readvnode(vp, uio, ap->a_cred); 443 } 444 445 /* 446 * smbfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 447 * struct ucred *a_cred) 448 */ 449 static int 450 smbfs_write(struct vop_write_args *ap) 451 { 452 struct vnode *vp = ap->a_vp; 453 struct uio *uio = ap->a_uio; 454 455 SMBVDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid); 456 if (vp->v_type != VREG) 457 return (EPERM); 458 return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag); 459 } 460 /* 461 * smbfs_create call 462 * Create a regular file. On entry the directory to contain the file being 463 * created is locked. We must release before we return. 464 * 465 * smbfs_create(struct vnode *a_dvp, struct vnode **a_vpp, 466 * struct componentname *a_cnp, struct vattr *a_vap) 467 */ 468 static int 469 smbfs_create(struct vop_old_create_args *ap) 470 { 471 struct vnode *dvp = ap->a_dvp; 472 struct vattr *vap = ap->a_vap; 473 struct vnode **vpp=ap->a_vpp; 474 struct componentname *cnp = ap->a_cnp; 475 struct smbnode *dnp = VTOSMB(dvp); 476 struct vnode *vp; 477 struct vattr vattr; 478 struct smbfattr fattr; 479 struct smb_cred scred; 480 char *name = cnp->cn_nameptr; 481 int nmlen = cnp->cn_namelen; 482 int error; 483 484 485 SMBVDEBUG("\n"); 486 *vpp = NULL; 487 if (vap->va_type != VREG) 488 return EOPNOTSUPP; 489 if ((error = VOP_GETATTR(dvp, &vattr))) 490 return error; 491 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 492 493 error = smbfs_smb_create(dnp, name, nmlen, &scred); 494 if (error) 495 return error; 496 error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); 497 if (error) 498 return error; 499 error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp); 500 if (error) 501 return error; 502 *vpp = vp; 503 return error; 504 } 505 506 /* 507 * smbfs_remove(struct vnode *a_dvp, struct vnode *a_vp, 508 * struct componentname *a_cnp) 509 */ 510 static int 511 smbfs_remove(struct vop_old_remove_args *ap) 512 { 513 struct vnode *vp = ap->a_vp; 514 /* struct vnode *dvp = ap->a_dvp;*/ 515 struct componentname *cnp = ap->a_cnp; 516 struct smbnode *np = VTOSMB(vp); 517 struct smb_cred scred; 518 int error; 519 520 if (vp->v_type == VDIR || np->n_opencount || vp->v_sysref.refcnt > 1) 521 return EPERM; 522 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 523 error = smbfs_smb_delete(np, &scred); 524 return error; 525 } 526 527 /* 528 * smbfs_file rename call 529 * 530 * smbfs_rename(struct vnode *a_fdvp, struct vnode *a_fvp, 531 * struct componentname *a_fcnp, struct vnode *a_tdvp, 532 * struct vnode *a_tvp, struct componentname *a_tcnp) 533 */ 534 static int 535 smbfs_rename(struct vop_old_rename_args *ap) 536 { 537 struct vnode *fvp = ap->a_fvp; 538 struct vnode *tvp = ap->a_tvp; 539 struct vnode *fdvp = ap->a_fdvp; 540 struct vnode *tdvp = ap->a_tdvp; 541 struct componentname *tcnp = ap->a_tcnp; 542 /* struct componentname *fcnp = ap->a_fcnp;*/ 543 struct smb_cred scred; 544 u_int16_t flags = 6; 545 int error=0; 546 547 /* Check for cross-device rename */ 548 if ((fvp->v_mount != tdvp->v_mount) || 549 (tvp && (fvp->v_mount != tvp->v_mount))) { 550 error = EXDEV; 551 goto out; 552 } 553 554 if (tvp && tvp->v_sysref.refcnt > 1) { 555 error = EBUSY; 556 goto out; 557 } 558 flags = 0x10; /* verify all writes */ 559 if (fvp->v_type == VDIR) { 560 flags |= 2; 561 } else if (fvp->v_type == VREG) { 562 flags |= 1; 563 } else { 564 error = EINVAL; 565 goto out; 566 } 567 smb_makescred(&scred, tcnp->cn_td, tcnp->cn_cred); 568 /* 569 * It seems that Samba doesn't implement SMB_COM_MOVE call... 570 */ 571 #ifdef notnow 572 if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { 573 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp), 574 tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); 575 } else 576 #endif 577 { 578 /* 579 * We have to do the work atomicaly 580 */ 581 if (tvp && tvp != fvp) { 582 error = smbfs_smb_delete(VTOSMB(tvp), &scred); 583 if (error) 584 goto out_cacherem; 585 } 586 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp), 587 tcnp->cn_nameptr, tcnp->cn_namelen, &scred); 588 } 589 590 out_cacherem: 591 smbfs_attr_cacheremove(fdvp); 592 smbfs_attr_cacheremove(tdvp); 593 out: 594 if (tdvp == tvp) 595 vrele(tdvp); 596 else 597 vput(tdvp); 598 if (tvp) 599 vput(tvp); 600 vrele(fdvp); 601 vrele(fvp); 602 #ifdef possible_mistake 603 #error x 604 vgone_vxlocked(fvp); 605 if (tvp) 606 vgone_vxlocked(tvp); 607 #endif 608 return error; 609 } 610 611 /* 612 * somtime it will come true... 613 * 614 * smbfs_link(struct vnode *a_tdvp, struct vnode *a_vp, 615 * struct componentname *a_cnp) 616 */ 617 static int 618 smbfs_link(struct vop_old_link_args *ap) 619 { 620 return EOPNOTSUPP; 621 } 622 623 /* 624 * smbfs_symlink link create call. 625 * Sometime it will be functional... 626 * 627 * smbfs_symlink(struct vnode *a_dvp, struct vnode **a_vpp, 628 * struct componentname *a_cnp, struct vattr *a_vap, 629 * char *a_target) 630 */ 631 static int 632 smbfs_symlink(struct vop_old_symlink_args *ap) 633 { 634 return EOPNOTSUPP; 635 } 636 637 static int 638 smbfs_mknod(struct vop_old_mknod_args *ap) 639 { 640 return EOPNOTSUPP; 641 } 642 643 /* 644 * smbfs_mkdir(struct vnode *a_dvp, struct vnode **a_vpp, 645 * struct componentname *a_cnp, struct vattr *a_vap) 646 */ 647 static int 648 smbfs_mkdir(struct vop_old_mkdir_args *ap) 649 { 650 struct vnode *dvp = ap->a_dvp; 651 /* struct vattr *vap = ap->a_vap;*/ 652 struct vnode *vp; 653 struct componentname *cnp = ap->a_cnp; 654 struct smbnode *dnp = VTOSMB(dvp); 655 struct vattr vattr; 656 struct smb_cred scred; 657 struct smbfattr fattr; 658 char *name = cnp->cn_nameptr; 659 int len = cnp->cn_namelen; 660 int error; 661 662 if ((error = VOP_GETATTR(dvp, &vattr))) { 663 return error; 664 } 665 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) 666 return EEXIST; 667 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 668 error = smbfs_smb_mkdir(dnp, name, len, &scred); 669 if (error) 670 return error; 671 error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred); 672 if (error) 673 return error; 674 error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); 675 if (error) 676 return error; 677 *ap->a_vpp = vp; 678 return 0; 679 } 680 681 /* 682 * smbfs_remove directory call 683 * 684 * smbfs_rmdir(struct vnode *a_dvp, struct vnode *a_vp, 685 * struct componentname *a_cnp) 686 */ 687 static int 688 smbfs_rmdir(struct vop_old_rmdir_args *ap) 689 { 690 struct vnode *vp = ap->a_vp; 691 struct vnode *dvp = ap->a_dvp; 692 struct componentname *cnp = ap->a_cnp; 693 /* struct smbmount *smp = VTOSMBFS(vp);*/ 694 struct smbnode *dnp = VTOSMB(dvp); 695 struct smbnode *np = VTOSMB(vp); 696 struct smb_cred scred; 697 int error; 698 699 if (dvp == vp) 700 return EINVAL; 701 702 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 703 error = smbfs_smb_rmdir(np, &scred); 704 dnp->n_flag |= NMODIFIED; 705 smbfs_attr_cacheremove(dvp); 706 return error; 707 } 708 709 /* 710 * smbfs_readdir call 711 * 712 * smbfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 713 * int *a_eofflag, off_t *a_cookies, int a_ncookies) 714 */ 715 static int 716 smbfs_readdir(struct vop_readdir_args *ap) 717 { 718 struct vnode *vp = ap->a_vp; 719 struct uio *uio = ap->a_uio; 720 int error; 721 722 if (vp->v_type != VDIR) 723 return (EPERM); 724 #ifdef notnow 725 if (ap->a_ncookies) { 726 kprintf("smbfs_readdir: no support for cookies now..."); 727 return (EOPNOTSUPP); 728 } 729 #endif 730 if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) == 0) { 731 error = smbfs_readvnode(vp, uio, ap->a_cred); 732 vn_unlock(vp); 733 } 734 return error; 735 } 736 737 /* 738 * smbfs_fsync(struct vnode *a_vp, int a_waitfor) 739 */ 740 /* ARGSUSED */ 741 static int 742 smbfs_fsync(struct vop_fsync_args *ap) 743 { 744 /* return (smb_flush(ap->a_vp, ap->a_waitfor, curthread, 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 kprintf("no smbnode data\n"); 759 return (0); 760 } 761 kprintf("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 kprintf("\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, 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 if (ap->a_doffsetp != NULL) 824 *ap->a_doffsetp = ap->a_loffset; 825 if (ap->a_runp != NULL) 826 *ap->a_runp = 0; 827 if (ap->a_runb != NULL) 828 *ap->a_runb = 0; 829 return (0); 830 } 831 832 /* 833 * smbfs_ioctl(struct vnode *a_vp, u_long a_command, caddr_t a_data, 834 * int fflag, struct ucred *cred, struct proc *p) 835 */ 836 int 837 smbfs_ioctl(struct vop_ioctl_args *ap) 838 { 839 return EINVAL; 840 } 841 842 static char smbfs_atl[] = "rhsvda"; 843 844 /* 845 * smbfs_getextattr(struct vnode *a_vp, char *a_name, struct uio *a_uio, 846 * struct ucred *a_cred) 847 */ 848 static int 849 smbfs_getextattr(struct vop_getextattr_args *ap) 850 { 851 struct vnode *vp = ap->a_vp; 852 struct ucred *cred = ap->a_cred; 853 struct uio *uio = ap->a_uio; 854 const char *name = ap->a_name; 855 struct smbnode *np = VTOSMB(vp); 856 struct vattr vattr; 857 char buf[10]; 858 int i, attr, error; 859 860 error = VOP_ACCESS(vp, VREAD, cred); 861 if (error) 862 return error; 863 error = VOP_GETATTR(vp, &vattr); 864 if (error) 865 return error; 866 if (strcmp(name, "dosattr") == 0) { 867 attr = np->n_dosattr; 868 for (i = 0; i < 6; i++, attr >>= 1) 869 buf[i] = (attr & 1) ? smbfs_atl[i] : '-'; 870 buf[i] = 0; 871 error = uiomove(buf, i, uio); 872 873 } else 874 error = EINVAL; 875 return error; 876 } 877 878 /* 879 * Since we expected to support F_GETLK (and SMB protocol has no such function), 880 * it is necessary to use lf_advlock(). It would be nice if this function had 881 * a callback mechanism because it will help to improve a level of consistency. 882 * 883 * smbfs_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, 884 * struct flock *a_fl, int a_flags) 885 */ 886 int 887 smbfs_advlock(struct vop_advlock_args *ap) 888 { 889 struct vnode *vp = ap->a_vp; 890 struct smbnode *np = VTOSMB(vp); 891 struct flock *fl = ap->a_fl; 892 caddr_t id = (caddr_t)1 /* ap->a_id */; 893 /* int flags = ap->a_flags;*/ 894 struct thread *td = curthread; /* XXX */ 895 struct smb_cred scred; 896 off_t start, end, size; 897 int error, lkop; 898 899 if (vp->v_type == VDIR) { 900 /* 901 * SMB protocol have no support for directory locking. 902 * Although locks can be processed on local machine, I don't 903 * think that this is a good idea, because some programs 904 * can work wrong assuming directory is locked. So, we just 905 * return 'operation not supported 906 */ 907 return EOPNOTSUPP; 908 } 909 size = np->n_size; 910 switch (fl->l_whence) { 911 case SEEK_SET: 912 case SEEK_CUR: 913 start = fl->l_start; 914 break; 915 case SEEK_END: 916 start = fl->l_start + size; 917 default: 918 return EINVAL; 919 } 920 if (start < 0) 921 return EINVAL; 922 if (fl->l_len == 0) 923 end = -1; 924 else { 925 end = start + fl->l_len - 1; 926 if (end < start) 927 return EINVAL; 928 } 929 smb_makescred(&scred, td, td->td_proc ? td->td_proc->p_ucred : NULL); 930 switch (ap->a_op) { 931 case F_SETLK: 932 switch (fl->l_type) { 933 case F_WRLCK: 934 lkop = SMB_LOCK_EXCL; 935 break; 936 case F_RDLCK: 937 lkop = SMB_LOCK_SHARED; 938 break; 939 case F_UNLCK: 940 lkop = SMB_LOCK_RELEASE; 941 break; 942 default: 943 return EINVAL; 944 } 945 error = lf_advlock(ap, &np->n_lockf, size); 946 if (error) 947 break; 948 lkop = SMB_LOCK_EXCL; 949 error = smbfs_smb_lock(np, lkop, id, start, end, &scred); 950 if (error) { 951 ap->a_op = F_UNLCK; 952 lf_advlock(ap, &np->n_lockf, size); 953 } 954 break; 955 case F_UNLCK: 956 lf_advlock(ap, &np->n_lockf, size); 957 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, &scred); 958 break; 959 case F_GETLK: 960 error = lf_advlock(ap, &np->n_lockf, size); 961 break; 962 default: 963 return EINVAL; 964 } 965 return error; 966 } 967 968 static int 969 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop) 970 { 971 static const char *badchars = "*/:<>;?"; 972 static const char *badchars83 = " +|,"; 973 const char *cp; 974 int i, error; 975 976 /* 977 * Backslash characters, being a path delimiter, are prohibited 978 * within a path component even for LOOKUP operations. 979 */ 980 if (index(name, '\\') != NULL) 981 return ENOENT; 982 983 if (nameiop == NAMEI_LOOKUP) 984 return 0; 985 error = ENOENT; 986 if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { 987 /* 988 * Name should conform 8.3 format 989 */ 990 if (nmlen > 12) 991 return ENAMETOOLONG; 992 cp = index(name, '.'); 993 if (cp == NULL) 994 return error; 995 if (cp == name || (cp - name) > 8) 996 return error; 997 cp = index(cp + 1, '.'); 998 if (cp != NULL) 999 return error; 1000 for (cp = name, i = 0; i < nmlen; i++, cp++) 1001 if (index(badchars83, *cp) != NULL) 1002 return error; 1003 } 1004 for (cp = name, i = 0; i < nmlen; i++, cp++) 1005 if (index(badchars, *cp) != NULL) 1006 return error; 1007 return 0; 1008 } 1009 1010 /* 1011 * Things go even weird without fixed inode numbers... 1012 * 1013 * smbfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 1014 * struct componentname *a_cnp) 1015 */ 1016 int 1017 smbfs_lookup(struct vop_old_lookup_args *ap) 1018 { 1019 struct componentname *cnp = ap->a_cnp; 1020 struct thread *td = cnp->cn_td; 1021 struct vnode *dvp = ap->a_dvp; 1022 struct vnode **vpp = ap->a_vpp; 1023 struct vnode *vp; 1024 struct smbmount *smp; 1025 struct mount *mp = dvp->v_mount; 1026 struct smbnode *dnp; 1027 struct smbfattr fattr, *fap; 1028 struct smb_cred scred; 1029 char *name = cnp->cn_nameptr; 1030 int flags = cnp->cn_flags; 1031 int nameiop = cnp->cn_nameiop; 1032 int nmlen = cnp->cn_namelen; 1033 int lockparent, wantparent, error, isdot; 1034 1035 SMBVDEBUG("\n"); 1036 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 1037 *vpp = NULL; 1038 if (dvp->v_type != VDIR) 1039 return ENOTDIR; 1040 if ((flags & CNP_ISDOTDOT) && (dvp->v_flag & VROOT)) { 1041 SMBFSERR("invalid '..'\n"); 1042 return EIO; 1043 } 1044 #ifdef SMB_VNODE_DEBUG 1045 { 1046 char *cp, c; 1047 1048 cp = name + nmlen; 1049 c = *cp; 1050 *cp = 0; 1051 SMBVDEBUG("%d '%s' in '%s' id=d\n", nameiop, name, 1052 VTOSMB(dvp)->n_name); 1053 *cp = c; 1054 } 1055 #endif 1056 if ((mp->mnt_flag & MNT_RDONLY) && nameiop != NAMEI_LOOKUP) 1057 return EROFS; 1058 if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred)) != 0) 1059 return error; 1060 lockparent = flags & CNP_LOCKPARENT; 1061 wantparent = flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 1062 smp = VFSTOSMBFS(mp); 1063 dnp = VTOSMB(dvp); 1064 isdot = (nmlen == 1 && name[0] == '.'); 1065 1066 error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop); 1067 1068 if (error) 1069 return ENOENT; 1070 1071 error = 0; 1072 smb_makescred(&scred, td, cnp->cn_cred); 1073 fap = &fattr; 1074 if (flags & CNP_ISDOTDOT) { 1075 error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, fap, 1076 &scred); 1077 SMBVDEBUG("result of dotdot lookup: %d\n", error); 1078 } else { 1079 fap = &fattr; 1080 error = smbfs_smb_lookup(dnp, name, nmlen, fap, &scred); 1081 /* if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')*/ 1082 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error); 1083 } 1084 if (error && error != ENOENT) 1085 return error; 1086 if (error) { /* entry not found */ 1087 /* 1088 * Handle RENAME or CREATE case... 1089 */ 1090 if ((nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME) && wantparent) { 1091 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1092 if (error) 1093 return error; 1094 if (!lockparent) { 1095 vn_unlock(dvp); 1096 cnp->cn_flags |= CNP_PDIRUNLOCK; 1097 } 1098 return (EJUSTRETURN); 1099 } 1100 return ENOENT; 1101 }/* else { 1102 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum); 1103 }*/ 1104 /* 1105 * handle DELETE case ... 1106 */ 1107 if (nameiop == NAMEI_DELETE) { /* delete last component */ 1108 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1109 if (error) 1110 return error; 1111 if (isdot) { 1112 vref(dvp); 1113 *vpp = dvp; 1114 return 0; 1115 } 1116 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1117 if (error) 1118 return error; 1119 *vpp = vp; 1120 if (!lockparent) { 1121 vn_unlock(dvp); 1122 cnp->cn_flags |= CNP_PDIRUNLOCK; 1123 } 1124 return 0; 1125 } 1126 if (nameiop == NAMEI_RENAME && wantparent) { 1127 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1128 if (error) 1129 return error; 1130 if (isdot) 1131 return EISDIR; 1132 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1133 if (error) 1134 return error; 1135 *vpp = vp; 1136 if (!lockparent) { 1137 vn_unlock(dvp); 1138 cnp->cn_flags |= CNP_PDIRUNLOCK; 1139 } 1140 return 0; 1141 } 1142 if (flags & CNP_ISDOTDOT) { 1143 vn_unlock(dvp); 1144 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp); 1145 if (error) { 1146 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 1147 return error; 1148 } 1149 if (lockparent) { 1150 error = vn_lock(dvp, LK_EXCLUSIVE); 1151 if (error) { 1152 cnp->cn_flags |= CNP_PDIRUNLOCK; 1153 vput(vp); 1154 return error; 1155 } 1156 } 1157 *vpp = vp; 1158 } else if (isdot) { 1159 vref(dvp); 1160 *vpp = dvp; 1161 } else { 1162 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1163 if (error) 1164 return error; 1165 *vpp = vp; 1166 SMBVDEBUG("lookup: getnewvp!\n"); 1167 if (!lockparent) { 1168 vn_unlock(dvp); 1169 cnp->cn_flags |= CNP_PDIRUNLOCK; 1170 } 1171 } 1172 return 0; 1173 } 1174