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 1.38 2007/05/06 19:23:35 dillon Exp $ 34 */ 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/proc.h> 39 #include <sys/namei.h> 40 #include <sys/fcntl.h> 41 #include <sys/mount.h> 42 #include <sys/unistd.h> 43 #include <sys/vnode.h> 44 #include <sys/lockf.h> 45 46 #include <vm/vm.h> 47 #include <vm/vm_extern.h> 48 #include <vm/vm_zone.h> 49 50 51 #include <netproto/smb/smb.h> 52 #include <netproto/smb/smb_conn.h> 53 #include <netproto/smb/smb_subr.h> 54 55 #include "smbfs.h" 56 #include "smbfs_node.h" 57 #include "smbfs_subr.h" 58 59 #include <sys/buf.h> 60 61 /* 62 * Prototypes for SMBFS vnode operations 63 */ 64 static int smbfs_create(struct vop_old_create_args *); 65 static int smbfs_mknod(struct vop_old_mknod_args *); 66 static int smbfs_open(struct vop_open_args *); 67 static int smbfs_closel(struct vop_close_args *); 68 static int smbfs_access(struct vop_access_args *); 69 static int smbfs_getattr(struct vop_getattr_args *); 70 static int smbfs_setattr(struct vop_setattr_args *); 71 static int smbfs_read(struct vop_read_args *); 72 static int smbfs_write(struct vop_write_args *); 73 static int smbfs_fsync(struct vop_fsync_args *); 74 static int smbfs_remove(struct vop_old_remove_args *); 75 static int smbfs_link(struct vop_old_link_args *); 76 static int smbfs_lookup(struct vop_old_lookup_args *); 77 static int smbfs_rename(struct vop_old_rename_args *); 78 static int smbfs_mkdir(struct vop_old_mkdir_args *); 79 static int smbfs_rmdir(struct vop_old_rmdir_args *); 80 static int smbfs_symlink(struct vop_old_symlink_args *); 81 static int smbfs_readdir(struct vop_readdir_args *); 82 static int smbfs_bmap(struct vop_bmap_args *); 83 static int smbfs_strategy(struct vop_strategy_args *); 84 static int smbfs_print(struct vop_print_args *); 85 static int smbfs_pathconf(struct vop_pathconf_args *ap); 86 static int smbfs_advlock(struct vop_advlock_args *); 87 static int smbfs_getextattr(struct vop_getextattr_args *ap); 88 89 struct vop_ops smbfs_vnode_vops = { 90 .vop_default = vop_defaultop, 91 .vop_access = smbfs_access, 92 .vop_advlock = smbfs_advlock, 93 .vop_bmap = smbfs_bmap, 94 .vop_close = smbfs_closel, 95 .vop_old_create = smbfs_create, 96 .vop_fsync = smbfs_fsync, 97 .vop_getattr = smbfs_getattr, 98 .vop_getpages = smbfs_getpages, 99 .vop_inactive = smbfs_inactive, 100 .vop_ioctl = smbfs_ioctl, 101 .vop_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 * struct thread *a_td) 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 } 152 error = (((vp->v_type == VREG) ? smp->sm_args.file_mode : smp->sm_args.dir_mode) & mode) == mode ? 0 : EACCES; 153 return error; 154 } 155 156 /* 157 * smbfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 158 * struct thread *a_td) 159 */ 160 /* ARGSUSED */ 161 static int 162 smbfs_open(struct vop_open_args *ap) 163 { 164 struct vnode *vp = ap->a_vp; 165 struct smbnode *np = VTOSMB(vp); 166 struct smb_cred scred; 167 struct vattr vattr; 168 int mode = ap->a_mode; 169 int error, accmode; 170 171 SMBVDEBUG("%s,%d\n", np->n_name, np->n_opencount); 172 if (vp->v_type != VREG && vp->v_type != VDIR) { 173 SMBFSERR("open eacces vtype=%d\n", vp->v_type); 174 return EACCES; 175 } 176 if (vp->v_type == VDIR) { 177 if (np->n_opencount == 0) 178 np->n_cached_cred = crhold(ap->a_cred); 179 np->n_opencount++; 180 return (vop_stdopen(ap)); 181 } 182 if (np->n_flag & NMODIFIED) { 183 if ((error = smbfs_vinvalbuf(vp, V_SAVE, 1)) == EINTR) 184 return error; 185 smbfs_attr_cacheremove(vp); 186 error = VOP_GETATTR(vp, &vattr); 187 if (error) 188 return error; 189 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 190 } else { 191 error = VOP_GETATTR(vp, &vattr); 192 if (error) 193 return error; 194 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { 195 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 196 if (error == EINTR) 197 return error; 198 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 199 } 200 } 201 if (np->n_opencount) { 202 np->n_opencount++; 203 return (vop_stdopen(ap)); 204 } 205 accmode = SMB_AM_OPENREAD; 206 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 207 accmode = SMB_AM_OPENRW; 208 smb_makescred(&scred, curthread, ap->a_cred); 209 error = smbfs_smb_open(np, accmode, &scred); 210 if (error) { 211 if (mode & FWRITE) 212 return EACCES; 213 accmode = SMB_AM_OPENREAD; 214 error = smbfs_smb_open(np, accmode, &scred); 215 } 216 if (!error) { 217 np->n_cached_cred = crhold(ap->a_cred); 218 np->n_opencount++; 219 } 220 smbfs_attr_cacheremove(vp); 221 if (error == 0) 222 vop_stdopen(ap); 223 return error; 224 } 225 226 static int 227 smbfs_closel(struct vop_close_args *ap) 228 { 229 struct vnode *vp = ap->a_vp; 230 struct smbnode *np = VTOSMB(vp); 231 struct smb_cred scred; 232 struct vattr vattr; 233 int error; 234 235 SMBVDEBUG("name=%s, pid=%d, c=%d\n",np->n_name, p->p_pid, np->n_opencount); 236 237 smb_makescred(&scred, curthread, proc0.p_ucred); 238 error = 0; 239 240 if (np->n_opencount == 0) { 241 if (vp->v_type != VDIR) 242 SMBERROR("Negative opencount\n"); 243 goto done; 244 } 245 np->n_opencount--; 246 if (vp->v_type == VDIR) { 247 if (np->n_opencount) 248 goto done; 249 if (np->n_dirseq) { 250 smbfs_findclose(np->n_dirseq, &scred); 251 np->n_dirseq = NULL; 252 } 253 } else { 254 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 255 if (np->n_opencount) 256 goto done; 257 VOP_GETATTR(vp, &vattr); 258 error = smbfs_smb_close(np->n_mount->sm_share, np->n_fid, 259 &np->n_mtime, &scred); 260 } 261 crfree(np->n_cached_cred); 262 np->n_cached_cred = NULL; 263 smbfs_attr_cacheremove(vp); 264 done: 265 vop_stdclose(ap); 266 return error; 267 } 268 269 /* 270 * smbfs_getattr call from vfs. 271 * 272 * smbfs_getattr(struct vnode *a_vp, struct vattr *a_vap, struct thread *a_td) 273 */ 274 static int 275 smbfs_getattr(struct vop_getattr_args *ap) 276 { 277 struct vnode *vp = ap->a_vp; 278 struct smbnode *np = VTOSMB(vp); 279 struct vattr *va=ap->a_vap; 280 struct smbfattr fattr; 281 struct smb_cred scred; 282 u_quad_t oldsize; 283 int error; 284 285 SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_flag & VROOT) != 0); 286 error = smbfs_attr_cachelookup(vp, va); 287 if (!error) 288 return 0; 289 SMBVDEBUG("not in the cache\n"); 290 smb_makescred(&scred, curthread, proc0.p_ucred); 291 oldsize = np->n_size; 292 error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred); 293 if (error) { 294 SMBVDEBUG("error %d\n", error); 295 return error; 296 } 297 smbfs_attr_cacheenter(vp, &fattr); 298 smbfs_attr_cachelookup(vp, va); 299 if (np->n_opencount) 300 np->n_size = oldsize; 301 return 0; 302 } 303 304 /* 305 * smbfs_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred, 306 * struct thread *a_td) 307 */ 308 static int 309 smbfs_setattr(struct vop_setattr_args *ap) 310 { 311 struct vnode *vp = ap->a_vp; 312 struct smbnode *np = VTOSMB(vp); 313 struct vattr *vap = ap->a_vap; 314 struct timespec *mtime, *atime; 315 struct smb_cred scred; 316 struct smb_share *ssp = np->n_mount->sm_share; 317 struct smb_vc *vcp = SSTOVC(ssp); 318 u_quad_t tsize = 0; 319 int isreadonly, doclose, error = 0; 320 321 SMBVDEBUG("\n"); 322 if (vap->va_flags != VNOVAL) 323 return EOPNOTSUPP; 324 isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY); 325 /* 326 * Disallow write attempts if the filesystem is mounted read-only. 327 */ 328 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 329 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 330 vap->va_mode != (mode_t)VNOVAL) && isreadonly) 331 return EROFS; 332 smb_makescred(&scred, curthread, ap->a_cred); 333 if (vap->va_size != VNOVAL) { 334 switch (vp->v_type) { 335 case VDIR: 336 return EISDIR; 337 case VREG: 338 break; 339 default: 340 return EINVAL; 341 }; 342 if (isreadonly) 343 return EROFS; 344 doclose = 0; 345 vnode_pager_setsize(vp, (u_long)vap->va_size); 346 tsize = np->n_size; 347 np->n_size = vap->va_size; 348 if (np->n_opencount == 0) { 349 error = smbfs_smb_open(np, SMB_AM_OPENRW, &scred); 350 if (error == 0) 351 doclose = 1; 352 } 353 if (error == 0) 354 error = smbfs_smb_setfsize(np, vap->va_size, &scred); 355 if (doclose) 356 smbfs_smb_close(ssp, np->n_fid, NULL, &scred); 357 if (error) { 358 np->n_size = tsize; 359 vnode_pager_setsize(vp, (u_long)tsize); 360 return error; 361 } 362 } 363 mtime = atime = NULL; 364 if (vap->va_mtime.tv_sec != VNOVAL) 365 mtime = &vap->va_mtime; 366 if (vap->va_atime.tv_sec != VNOVAL) 367 atime = &vap->va_atime; 368 if (mtime != atime) { 369 if (ap->a_cred->cr_uid != VTOSMBFS(vp)->sm_args.uid && 370 (error = suser_cred(ap->a_cred, PRISON_ROOT)) && 371 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 372 (error = VOP_ACCESS(vp, VWRITE, ap->a_cred)))) 373 return (error); 374 #if 0 375 if (mtime == NULL) 376 mtime = &np->n_mtime; 377 if (atime == NULL) 378 atime = &np->n_atime; 379 #endif 380 /* 381 * If file is opened, then we can use handle based calls. 382 * If not, use path based ones. 383 */ 384 if (np->n_opencount == 0) { 385 if (vcp->vc_flags & SMBV_WIN95) { 386 error = VOP_OPEN(vp, FWRITE, ap->a_cred, NULL); 387 if (!error) { 388 /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 389 VOP_GETATTR(vp, &vattr);*/ 390 if (mtime) 391 np->n_mtime = *mtime; 392 VOP_CLOSE(vp, FWRITE); 393 } 394 } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) { 395 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 396 /* error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);*/ 397 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) { 398 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 399 } else { 400 error = smbfs_smb_setpattr(np, 0, mtime, &scred); 401 } 402 } else { 403 if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) { 404 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 405 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) { 406 error = smbfs_smb_setftime(np, mtime, atime, &scred); 407 } else { 408 /* 409 * I have no idea how to handle this for core 410 * level servers. The possible solution is to 411 * update mtime after file is closed. 412 */ 413 SMBERROR("can't update times on an opened file\n"); 414 } 415 } 416 } 417 /* 418 * Invalidate attribute cache in case if server doesn't set 419 * required attributes. 420 */ 421 smbfs_attr_cacheremove(vp); /* invalidate cache */ 422 VOP_GETATTR(vp, vap); 423 np->n_mtime.tv_sec = vap->va_mtime.tv_sec; 424 return error; 425 } 426 /* 427 * smbfs_read call. 428 * 429 * smbfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 430 * struct ucred *a_cred) 431 */ 432 static int 433 smbfs_read(struct vop_read_args *ap) 434 { 435 struct vnode *vp = ap->a_vp; 436 struct uio *uio = ap->a_uio; 437 438 SMBVDEBUG("\n"); 439 if (vp->v_type != VREG && vp->v_type != VDIR) 440 return EPERM; 441 return smbfs_readvnode(vp, uio, ap->a_cred); 442 } 443 444 /* 445 * smbfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 446 * struct ucred *a_cred) 447 */ 448 static int 449 smbfs_write(struct vop_write_args *ap) 450 { 451 struct vnode *vp = ap->a_vp; 452 struct uio *uio = ap->a_uio; 453 454 SMBVDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid); 455 if (vp->v_type != VREG) 456 return (EPERM); 457 return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag); 458 } 459 /* 460 * smbfs_create call 461 * Create a regular file. On entry the directory to contain the file being 462 * created is locked. We must release before we return. 463 * 464 * smbfs_create(struct vnode *a_dvp, struct vnode **a_vpp, 465 * struct componentname *a_cnp, struct vattr *a_vap) 466 */ 467 static int 468 smbfs_create(struct vop_old_create_args *ap) 469 { 470 struct vnode *dvp = ap->a_dvp; 471 struct vattr *vap = ap->a_vap; 472 struct vnode **vpp=ap->a_vpp; 473 struct componentname *cnp = ap->a_cnp; 474 struct smbnode *dnp = VTOSMB(dvp); 475 struct vnode *vp; 476 struct vattr vattr; 477 struct smbfattr fattr; 478 struct smb_cred scred; 479 char *name = cnp->cn_nameptr; 480 int nmlen = cnp->cn_namelen; 481 int error; 482 483 484 SMBVDEBUG("\n"); 485 *vpp = NULL; 486 if (vap->va_type != VREG) 487 return EOPNOTSUPP; 488 if ((error = VOP_GETATTR(dvp, &vattr))) 489 return error; 490 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 491 492 error = smbfs_smb_create(dnp, name, nmlen, &scred); 493 if (error) 494 return error; 495 error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); 496 if (error) 497 return error; 498 error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp); 499 if (error) 500 return error; 501 *vpp = vp; 502 return error; 503 } 504 505 /* 506 * smbfs_remove(struct vnode *a_dvp, struct vnode *a_vp, 507 * struct componentname *a_cnp) 508 */ 509 static int 510 smbfs_remove(struct vop_old_remove_args *ap) 511 { 512 struct vnode *vp = ap->a_vp; 513 /* struct vnode *dvp = ap->a_dvp;*/ 514 struct componentname *cnp = ap->a_cnp; 515 struct smbnode *np = VTOSMB(vp); 516 struct smb_cred scred; 517 int error; 518 519 if (vp->v_type == VDIR || np->n_opencount || vp->v_sysref.refcnt > 1) 520 return EPERM; 521 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 522 error = smbfs_smb_delete(np, &scred); 523 return error; 524 } 525 526 /* 527 * smbfs_file rename call 528 * 529 * smbfs_rename(struct vnode *a_fdvp, struct vnode *a_fvp, 530 * struct componentname *a_fcnp, struct vnode *a_tdvp, 531 * struct vnode *a_tvp, struct componentname *a_tcnp) 532 */ 533 static int 534 smbfs_rename(struct vop_old_rename_args *ap) 535 { 536 struct vnode *fvp = ap->a_fvp; 537 struct vnode *tvp = ap->a_tvp; 538 struct vnode *fdvp = ap->a_fdvp; 539 struct vnode *tdvp = ap->a_tdvp; 540 struct componentname *tcnp = ap->a_tcnp; 541 /* struct componentname *fcnp = ap->a_fcnp;*/ 542 struct smb_cred scred; 543 u_int16_t flags = 6; 544 int error=0; 545 546 /* Check for cross-device rename */ 547 if ((fvp->v_mount != tdvp->v_mount) || 548 (tvp && (fvp->v_mount != tvp->v_mount))) { 549 error = EXDEV; 550 goto out; 551 } 552 553 if (tvp && tvp->v_sysref.refcnt > 1) { 554 error = EBUSY; 555 goto out; 556 } 557 flags = 0x10; /* verify all writes */ 558 if (fvp->v_type == VDIR) { 559 flags |= 2; 560 } else if (fvp->v_type == VREG) { 561 flags |= 1; 562 } else { 563 error = EINVAL; 564 goto out; 565 } 566 smb_makescred(&scred, tcnp->cn_td, tcnp->cn_cred); 567 /* 568 * It seems that Samba doesn't implement SMB_COM_MOVE call... 569 */ 570 #ifdef notnow 571 if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { 572 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp), 573 tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); 574 } else 575 #endif 576 { 577 /* 578 * We have to do the work atomicaly 579 */ 580 if (tvp && tvp != fvp) { 581 error = smbfs_smb_delete(VTOSMB(tvp), &scred); 582 if (error) 583 goto out_cacherem; 584 } 585 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp), 586 tcnp->cn_nameptr, tcnp->cn_namelen, &scred); 587 } 588 589 out_cacherem: 590 smbfs_attr_cacheremove(fdvp); 591 smbfs_attr_cacheremove(tdvp); 592 out: 593 if (tdvp == tvp) 594 vrele(tdvp); 595 else 596 vput(tdvp); 597 if (tvp) 598 vput(tvp); 599 vrele(fdvp); 600 vrele(fvp); 601 #ifdef possible_mistake 602 #error x 603 vgone_vxlocked(fvp); 604 if (tvp) 605 vgone_vxlocked(tvp); 606 #endif 607 return error; 608 } 609 610 /* 611 * somtime it will come true... 612 * 613 * smbfs_link(struct vnode *a_tdvp, struct vnode *a_vp, 614 * struct componentname *a_cnp) 615 */ 616 static int 617 smbfs_link(struct vop_old_link_args *ap) 618 { 619 return EOPNOTSUPP; 620 } 621 622 /* 623 * smbfs_symlink link create call. 624 * Sometime it will be functional... 625 * 626 * smbfs_symlink(struct vnode *a_dvp, struct vnode **a_vpp, 627 * struct componentname *a_cnp, struct vattr *a_vap, 628 * char *a_target) 629 */ 630 static int 631 smbfs_symlink(struct vop_old_symlink_args *ap) 632 { 633 return EOPNOTSUPP; 634 } 635 636 static int 637 smbfs_mknod(struct vop_old_mknod_args *ap) 638 { 639 return EOPNOTSUPP; 640 } 641 642 /* 643 * smbfs_mkdir(struct vnode *a_dvp, struct vnode **a_vpp, 644 * struct componentname *a_cnp, struct vattr *a_vap) 645 */ 646 static int 647 smbfs_mkdir(struct vop_old_mkdir_args *ap) 648 { 649 struct vnode *dvp = ap->a_dvp; 650 /* struct vattr *vap = ap->a_vap;*/ 651 struct vnode *vp; 652 struct componentname *cnp = ap->a_cnp; 653 struct smbnode *dnp = VTOSMB(dvp); 654 struct vattr vattr; 655 struct smb_cred scred; 656 struct smbfattr fattr; 657 char *name = cnp->cn_nameptr; 658 int len = cnp->cn_namelen; 659 int error; 660 661 if ((error = VOP_GETATTR(dvp, &vattr))) { 662 return error; 663 } 664 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) 665 return EEXIST; 666 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 667 error = smbfs_smb_mkdir(dnp, name, len, &scred); 668 if (error) 669 return error; 670 error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred); 671 if (error) 672 return error; 673 error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); 674 if (error) 675 return error; 676 *ap->a_vpp = vp; 677 return 0; 678 } 679 680 /* 681 * smbfs_remove directory call 682 * 683 * smbfs_rmdir(struct vnode *a_dvp, struct vnode *a_vp, 684 * struct componentname *a_cnp) 685 */ 686 static int 687 smbfs_rmdir(struct vop_old_rmdir_args *ap) 688 { 689 struct vnode *vp = ap->a_vp; 690 struct vnode *dvp = ap->a_dvp; 691 struct componentname *cnp = ap->a_cnp; 692 /* struct smbmount *smp = VTOSMBFS(vp);*/ 693 struct smbnode *dnp = VTOSMB(dvp); 694 struct smbnode *np = VTOSMB(vp); 695 struct smb_cred scred; 696 int error; 697 698 if (dvp == vp) 699 return EINVAL; 700 701 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 702 error = smbfs_smb_rmdir(np, &scred); 703 dnp->n_flag |= NMODIFIED; 704 smbfs_attr_cacheremove(dvp); 705 return error; 706 } 707 708 /* 709 * smbfs_readdir call 710 * 711 * smbfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 712 * int *a_eofflag, u_long *a_cookies, int a_ncookies) 713 */ 714 static int 715 smbfs_readdir(struct vop_readdir_args *ap) 716 { 717 struct vnode *vp = ap->a_vp; 718 struct uio *uio = ap->a_uio; 719 int error; 720 721 if (vp->v_type != VDIR) 722 return (EPERM); 723 #ifdef notnow 724 if (ap->a_ncookies) { 725 kprintf("smbfs_readdir: no support for cookies now..."); 726 return (EOPNOTSUPP); 727 } 728 #endif 729 if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) == 0) { 730 error = smbfs_readvnode(vp, uio, ap->a_cred); 731 vn_unlock(vp); 732 } 733 return error; 734 } 735 736 /* 737 * smbfs_fsync(struct vnode *a_vp, struct ucred *a_cred, 738 * int a_waitfor, struct thread *a_td) 739 */ 740 /* ARGSUSED */ 741 static int 742 smbfs_fsync(struct vop_fsync_args *ap) 743 { 744 /* return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_td, 1));*/ 745 return (0); 746 } 747 748 /* 749 * smbfs_print(struct vnode *a_vp) 750 */ 751 static int 752 smbfs_print(struct vop_print_args *ap) 753 { 754 struct vnode *vp = ap->a_vp; 755 struct smbnode *np = VTOSMB(vp); 756 757 if (np == NULL) { 758 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, struct vnode **a_vpp, 818 * off_t *a_doffsetp, int *a_runp, int *a_runb) 819 */ 820 static int 821 smbfs_bmap(struct vop_bmap_args *ap) 822 { 823 struct vnode *vp = ap->a_vp; 824 825 if (ap->a_vpp != NULL) 826 *ap->a_vpp = vp; 827 if (ap->a_doffsetp != NULL) 828 *ap->a_doffsetp = ap->a_loffset; 829 if (ap->a_runp != NULL) 830 *ap->a_runp = 0; 831 if (ap->a_runb != NULL) 832 *ap->a_runb = 0; 833 return (0); 834 } 835 836 /* 837 * smbfs_ioctl(struct vnode *a_vp, u_long a_command, caddr_t a_data, 838 * int fflag, struct ucred *cred, struct proc *p) 839 */ 840 int 841 smbfs_ioctl(struct vop_ioctl_args *ap) 842 { 843 return EINVAL; 844 } 845 846 static char smbfs_atl[] = "rhsvda"; 847 static int 848 smbfs_getextattr(struct vop_getextattr_args *ap) 849 /* { 850 IN struct vnode *a_vp; 851 IN char *a_name; 852 INOUT struct uio *a_uio; 853 IN struct ucred *a_cred; 854 IN struct thread *a_td; 855 }; 856 */ 857 { 858 struct vnode *vp = ap->a_vp; 859 struct ucred *cred = ap->a_cred; 860 struct uio *uio = ap->a_uio; 861 const char *name = ap->a_name; 862 struct smbnode *np = VTOSMB(vp); 863 struct vattr vattr; 864 char buf[10]; 865 int i, attr, error; 866 867 error = VOP_ACCESS(vp, VREAD, cred); 868 if (error) 869 return error; 870 error = VOP_GETATTR(vp, &vattr); 871 if (error) 872 return error; 873 if (strcmp(name, "dosattr") == 0) { 874 attr = np->n_dosattr; 875 for (i = 0; i < 6; i++, attr >>= 1) 876 buf[i] = (attr & 1) ? smbfs_atl[i] : '-'; 877 buf[i] = 0; 878 error = uiomove(buf, i, uio); 879 880 } else 881 error = EINVAL; 882 return error; 883 } 884 885 /* 886 * Since we expected to support F_GETLK (and SMB protocol has no such function), 887 * it is necessary to use lf_advlock(). It would be nice if this function had 888 * a callback mechanism because it will help to improve a level of consistency. 889 * 890 * smbfs_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, 891 * struct flock *a_fl, int a_flags) 892 */ 893 int 894 smbfs_advlock(struct vop_advlock_args *ap) 895 { 896 struct vnode *vp = ap->a_vp; 897 struct smbnode *np = VTOSMB(vp); 898 struct flock *fl = ap->a_fl; 899 caddr_t id = (caddr_t)1 /* ap->a_id */; 900 /* int flags = ap->a_flags;*/ 901 struct thread *td = curthread; /* XXX */ 902 struct smb_cred scred; 903 off_t start, end, size; 904 int error, lkop; 905 906 if (vp->v_type == VDIR) { 907 /* 908 * SMB protocol have no support for directory locking. 909 * Although locks can be processed on local machine, I don't 910 * think that this is a good idea, because some programs 911 * can work wrong assuming directory is locked. So, we just 912 * return 'operation not supported 913 */ 914 return EOPNOTSUPP; 915 } 916 size = np->n_size; 917 switch (fl->l_whence) { 918 case SEEK_SET: 919 case SEEK_CUR: 920 start = fl->l_start; 921 break; 922 case SEEK_END: 923 start = fl->l_start + size; 924 default: 925 return EINVAL; 926 } 927 if (start < 0) 928 return EINVAL; 929 if (fl->l_len == 0) 930 end = -1; 931 else { 932 end = start + fl->l_len - 1; 933 if (end < start) 934 return EINVAL; 935 } 936 smb_makescred(&scred, td, td->td_proc ? td->td_proc->p_ucred : NULL); 937 switch (ap->a_op) { 938 case F_SETLK: 939 switch (fl->l_type) { 940 case F_WRLCK: 941 lkop = SMB_LOCK_EXCL; 942 break; 943 case F_RDLCK: 944 lkop = SMB_LOCK_SHARED; 945 break; 946 case F_UNLCK: 947 lkop = SMB_LOCK_RELEASE; 948 break; 949 default: 950 return EINVAL; 951 } 952 error = lf_advlock(ap, &np->n_lockf, size); 953 if (error) 954 break; 955 lkop = SMB_LOCK_EXCL; 956 error = smbfs_smb_lock(np, lkop, id, start, end, &scred); 957 if (error) { 958 ap->a_op = F_UNLCK; 959 lf_advlock(ap, &np->n_lockf, size); 960 } 961 break; 962 case F_UNLCK: 963 lf_advlock(ap, &np->n_lockf, size); 964 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, &scred); 965 break; 966 case F_GETLK: 967 error = lf_advlock(ap, &np->n_lockf, size); 968 break; 969 default: 970 return EINVAL; 971 } 972 return error; 973 } 974 975 static int 976 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop) 977 { 978 static const char *badchars = "*/:<>;?"; 979 static const char *badchars83 = " +|,"; 980 const char *cp; 981 int i, error; 982 983 /* 984 * Backslash characters, being a path delimiter, are prohibited 985 * within a path component even for LOOKUP operations. 986 */ 987 if (index(name, '\\') != NULL) 988 return ENOENT; 989 990 if (nameiop == NAMEI_LOOKUP) 991 return 0; 992 error = ENOENT; 993 if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { 994 /* 995 * Name should conform 8.3 format 996 */ 997 if (nmlen > 12) 998 return ENAMETOOLONG; 999 cp = index(name, '.'); 1000 if (cp == NULL) 1001 return error; 1002 if (cp == name || (cp - name) > 8) 1003 return error; 1004 cp = index(cp + 1, '.'); 1005 if (cp != NULL) 1006 return error; 1007 for (cp = name, i = 0; i < nmlen; i++, cp++) 1008 if (index(badchars83, *cp) != NULL) 1009 return error; 1010 } 1011 for (cp = name, i = 0; i < nmlen; i++, cp++) 1012 if (index(badchars, *cp) != NULL) 1013 return error; 1014 return 0; 1015 } 1016 1017 /* 1018 * Things go even weird without fixed inode numbers... 1019 * 1020 * smbfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 1021 * struct componentname *a_cnp) 1022 */ 1023 int 1024 smbfs_lookup(struct vop_old_lookup_args *ap) 1025 { 1026 struct componentname *cnp = ap->a_cnp; 1027 struct thread *td = cnp->cn_td; 1028 struct vnode *dvp = ap->a_dvp; 1029 struct vnode **vpp = ap->a_vpp; 1030 struct vnode *vp; 1031 struct smbmount *smp; 1032 struct mount *mp = dvp->v_mount; 1033 struct smbnode *dnp; 1034 struct smbfattr fattr, *fap; 1035 struct smb_cred scred; 1036 char *name = cnp->cn_nameptr; 1037 int flags = cnp->cn_flags; 1038 int nameiop = cnp->cn_nameiop; 1039 int nmlen = cnp->cn_namelen; 1040 int lockparent, wantparent, error, isdot; 1041 1042 SMBVDEBUG("\n"); 1043 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 1044 *vpp = NULL; 1045 if (dvp->v_type != VDIR) 1046 return ENOTDIR; 1047 if ((flags & CNP_ISDOTDOT) && (dvp->v_flag & VROOT)) { 1048 SMBFSERR("invalid '..'\n"); 1049 return EIO; 1050 } 1051 #ifdef SMB_VNODE_DEBUG 1052 { 1053 char *cp, c; 1054 1055 cp = name + nmlen; 1056 c = *cp; 1057 *cp = 0; 1058 SMBVDEBUG("%d '%s' in '%s' id=d\n", nameiop, name, 1059 VTOSMB(dvp)->n_name); 1060 *cp = c; 1061 } 1062 #endif 1063 if ((mp->mnt_flag & MNT_RDONLY) && nameiop != NAMEI_LOOKUP) 1064 return EROFS; 1065 if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred)) != 0) 1066 return error; 1067 lockparent = flags & CNP_LOCKPARENT; 1068 wantparent = flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 1069 smp = VFSTOSMBFS(mp); 1070 dnp = VTOSMB(dvp); 1071 isdot = (nmlen == 1 && name[0] == '.'); 1072 1073 error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop); 1074 1075 if (error) 1076 return ENOENT; 1077 1078 error = 0; 1079 smb_makescred(&scred, td, cnp->cn_cred); 1080 fap = &fattr; 1081 if (flags & CNP_ISDOTDOT) { 1082 error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, fap, 1083 &scred); 1084 SMBVDEBUG("result of dotdot lookup: %d\n", error); 1085 } else { 1086 fap = &fattr; 1087 error = smbfs_smb_lookup(dnp, name, nmlen, fap, &scred); 1088 /* if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')*/ 1089 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error); 1090 } 1091 if (error && error != ENOENT) 1092 return error; 1093 if (error) { /* entry not found */ 1094 /* 1095 * Handle RENAME or CREATE case... 1096 */ 1097 if ((nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME) && wantparent) { 1098 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1099 if (error) 1100 return error; 1101 if (!lockparent) { 1102 vn_unlock(dvp); 1103 cnp->cn_flags |= CNP_PDIRUNLOCK; 1104 } 1105 return (EJUSTRETURN); 1106 } 1107 return ENOENT; 1108 }/* else { 1109 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum); 1110 }*/ 1111 /* 1112 * handle DELETE case ... 1113 */ 1114 if (nameiop == NAMEI_DELETE) { /* delete last component */ 1115 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1116 if (error) 1117 return error; 1118 if (isdot) { 1119 vref(dvp); 1120 *vpp = dvp; 1121 return 0; 1122 } 1123 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1124 if (error) 1125 return error; 1126 *vpp = vp; 1127 if (!lockparent) { 1128 vn_unlock(dvp); 1129 cnp->cn_flags |= CNP_PDIRUNLOCK; 1130 } 1131 return 0; 1132 } 1133 if (nameiop == NAMEI_RENAME && wantparent) { 1134 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1135 if (error) 1136 return error; 1137 if (isdot) 1138 return EISDIR; 1139 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1140 if (error) 1141 return error; 1142 *vpp = vp; 1143 if (!lockparent) { 1144 vn_unlock(dvp); 1145 cnp->cn_flags |= CNP_PDIRUNLOCK; 1146 } 1147 return 0; 1148 } 1149 if (flags & CNP_ISDOTDOT) { 1150 vn_unlock(dvp); 1151 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp); 1152 if (error) { 1153 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 1154 return error; 1155 } 1156 if (lockparent) { 1157 error = vn_lock(dvp, LK_EXCLUSIVE); 1158 if (error) { 1159 cnp->cn_flags |= CNP_PDIRUNLOCK; 1160 vput(vp); 1161 return error; 1162 } 1163 } 1164 *vpp = vp; 1165 } else if (isdot) { 1166 vref(dvp); 1167 *vpp = dvp; 1168 } else { 1169 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1170 if (error) 1171 return error; 1172 *vpp = vp; 1173 SMBVDEBUG("lookup: getnewvp!\n"); 1174 if (!lockparent) { 1175 vn_unlock(dvp); 1176 cnp->cn_flags |= CNP_PDIRUNLOCK; 1177 } 1178 } 1179 return 0; 1180 } 1181