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 } 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 file *a_fp) 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) 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 */ 307 static int 308 smbfs_setattr(struct vop_setattr_args *ap) 309 { 310 struct vnode *vp = ap->a_vp; 311 struct smbnode *np = VTOSMB(vp); 312 struct vattr *vap = ap->a_vap; 313 struct timespec *mtime, *atime; 314 struct smb_cred scred; 315 struct smb_share *ssp = np->n_mount->sm_share; 316 struct smb_vc *vcp = SSTOVC(ssp); 317 u_quad_t tsize = 0; 318 int isreadonly, doclose, error = 0; 319 320 SMBVDEBUG("\n"); 321 if (vap->va_flags != VNOVAL) 322 return EOPNOTSUPP; 323 isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY); 324 /* 325 * Disallow write attempts if the filesystem is mounted read-only. 326 */ 327 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 328 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 329 vap->va_mode != (mode_t)VNOVAL) && isreadonly) 330 return EROFS; 331 smb_makescred(&scred, curthread, ap->a_cred); 332 if (vap->va_size != VNOVAL) { 333 switch (vp->v_type) { 334 case VDIR: 335 return EISDIR; 336 case VREG: 337 break; 338 default: 339 return EINVAL; 340 }; 341 if (isreadonly) 342 return EROFS; 343 doclose = 0; 344 vnode_pager_setsize(vp, (u_long)vap->va_size); 345 tsize = np->n_size; 346 np->n_size = vap->va_size; 347 if (np->n_opencount == 0) { 348 error = smbfs_smb_open(np, SMB_AM_OPENRW, &scred); 349 if (error == 0) 350 doclose = 1; 351 } 352 if (error == 0) 353 error = smbfs_smb_setfsize(np, vap->va_size, &scred); 354 if (doclose) 355 smbfs_smb_close(ssp, np->n_fid, NULL, &scred); 356 if (error) { 357 np->n_size = tsize; 358 vnode_pager_setsize(vp, (u_long)tsize); 359 return error; 360 } 361 } 362 mtime = atime = NULL; 363 if (vap->va_mtime.tv_sec != VNOVAL) 364 mtime = &vap->va_mtime; 365 if (vap->va_atime.tv_sec != VNOVAL) 366 atime = &vap->va_atime; 367 if (mtime != atime) { 368 if (ap->a_cred->cr_uid != VTOSMBFS(vp)->sm_args.uid && 369 (error = priv_check_cred(ap->a_cred, PRIV_ROOT, PRISON_ROOT)) && 370 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 371 (error = VOP_ACCESS(vp, VWRITE, ap->a_cred)))) 372 return (error); 373 #if 0 374 if (mtime == NULL) 375 mtime = &np->n_mtime; 376 if (atime == NULL) 377 atime = &np->n_atime; 378 #endif 379 /* 380 * If file is opened, then we can use handle based calls. 381 * If not, use path based ones. 382 */ 383 if (np->n_opencount == 0) { 384 if (vcp->vc_flags & SMBV_WIN95) { 385 error = VOP_OPEN(vp, FWRITE, ap->a_cred, NULL); 386 if (!error) { 387 /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 388 VOP_GETATTR(vp, &vattr);*/ 389 if (mtime) 390 np->n_mtime = *mtime; 391 VOP_CLOSE(vp, FWRITE); 392 } 393 } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) { 394 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 395 /* error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);*/ 396 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) { 397 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 398 } else { 399 error = smbfs_smb_setpattr(np, 0, mtime, &scred); 400 } 401 } else { 402 if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) { 403 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 404 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) { 405 error = smbfs_smb_setftime(np, mtime, atime, &scred); 406 } else { 407 /* 408 * I have no idea how to handle this for core 409 * level servers. The possible solution is to 410 * update mtime after file is closed. 411 */ 412 SMBERROR("can't update times on an opened file\n"); 413 } 414 } 415 } 416 /* 417 * Invalidate attribute cache in case if server doesn't set 418 * required attributes. 419 */ 420 smbfs_attr_cacheremove(vp); /* invalidate cache */ 421 VOP_GETATTR(vp, vap); 422 np->n_mtime.tv_sec = vap->va_mtime.tv_sec; 423 return error; 424 } 425 /* 426 * smbfs_read call. 427 * 428 * smbfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 429 * struct ucred *a_cred) 430 */ 431 static int 432 smbfs_read(struct vop_read_args *ap) 433 { 434 struct vnode *vp = ap->a_vp; 435 struct uio *uio = ap->a_uio; 436 437 SMBVDEBUG("\n"); 438 if (vp->v_type != VREG && vp->v_type != VDIR) 439 return EPERM; 440 return smbfs_readvnode(vp, uio, ap->a_cred); 441 } 442 443 /* 444 * smbfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 445 * struct ucred *a_cred) 446 */ 447 static int 448 smbfs_write(struct vop_write_args *ap) 449 { 450 struct vnode *vp = ap->a_vp; 451 struct uio *uio = ap->a_uio; 452 453 SMBVDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid); 454 if (vp->v_type != VREG) 455 return (EPERM); 456 return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag); 457 } 458 /* 459 * smbfs_create call 460 * Create a regular file. On entry the directory to contain the file being 461 * created is locked. We must release before we return. 462 * 463 * smbfs_create(struct vnode *a_dvp, struct vnode **a_vpp, 464 * struct componentname *a_cnp, struct vattr *a_vap) 465 */ 466 static int 467 smbfs_create(struct vop_old_create_args *ap) 468 { 469 struct vnode *dvp = ap->a_dvp; 470 struct vattr *vap = ap->a_vap; 471 struct vnode **vpp=ap->a_vpp; 472 struct componentname *cnp = ap->a_cnp; 473 struct smbnode *dnp = VTOSMB(dvp); 474 struct vnode *vp; 475 struct vattr vattr; 476 struct smbfattr fattr; 477 struct smb_cred scred; 478 char *name = cnp->cn_nameptr; 479 int nmlen = cnp->cn_namelen; 480 int error; 481 482 483 SMBVDEBUG("\n"); 484 *vpp = NULL; 485 if (vap->va_type != VREG) 486 return EOPNOTSUPP; 487 if ((error = VOP_GETATTR(dvp, &vattr))) 488 return error; 489 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 490 491 error = smbfs_smb_create(dnp, name, nmlen, &scred); 492 if (error) 493 return error; 494 error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); 495 if (error) 496 return error; 497 error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp); 498 if (error) 499 return error; 500 *vpp = vp; 501 return error; 502 } 503 504 /* 505 * smbfs_remove(struct vnode *a_dvp, struct vnode *a_vp, 506 * struct componentname *a_cnp) 507 */ 508 static int 509 smbfs_remove(struct vop_old_remove_args *ap) 510 { 511 struct vnode *vp = ap->a_vp; 512 /* struct vnode *dvp = ap->a_dvp;*/ 513 struct componentname *cnp = ap->a_cnp; 514 struct smbnode *np = VTOSMB(vp); 515 struct smb_cred scred; 516 int error; 517 518 if (vp->v_type == VDIR || np->n_opencount || vp->v_sysref.refcnt > 1) 519 return EPERM; 520 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 521 error = smbfs_smb_delete(np, &scred); 522 return error; 523 } 524 525 /* 526 * smbfs_file rename call 527 * 528 * smbfs_rename(struct vnode *a_fdvp, struct vnode *a_fvp, 529 * struct componentname *a_fcnp, struct vnode *a_tdvp, 530 * struct vnode *a_tvp, struct componentname *a_tcnp) 531 */ 532 static int 533 smbfs_rename(struct vop_old_rename_args *ap) 534 { 535 struct vnode *fvp = ap->a_fvp; 536 struct vnode *tvp = ap->a_tvp; 537 struct vnode *fdvp = ap->a_fdvp; 538 struct vnode *tdvp = ap->a_tdvp; 539 struct componentname *tcnp = ap->a_tcnp; 540 /* struct componentname *fcnp = ap->a_fcnp;*/ 541 struct smb_cred scred; 542 u_int16_t flags = 6; 543 int error=0; 544 545 /* Check for cross-device rename */ 546 if ((fvp->v_mount != tdvp->v_mount) || 547 (tvp && (fvp->v_mount != tvp->v_mount))) { 548 error = EXDEV; 549 goto out; 550 } 551 552 if (tvp && tvp->v_sysref.refcnt > 1) { 553 error = EBUSY; 554 goto out; 555 } 556 flags = 0x10; /* verify all writes */ 557 if (fvp->v_type == VDIR) { 558 flags |= 2; 559 } else if (fvp->v_type == VREG) { 560 flags |= 1; 561 } else { 562 error = EINVAL; 563 goto out; 564 } 565 smb_makescred(&scred, tcnp->cn_td, tcnp->cn_cred); 566 /* 567 * It seems that Samba doesn't implement SMB_COM_MOVE call... 568 */ 569 #ifdef notnow 570 if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { 571 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp), 572 tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); 573 } else 574 #endif 575 { 576 /* 577 * We have to do the work atomicaly 578 */ 579 if (tvp && tvp != fvp) { 580 error = smbfs_smb_delete(VTOSMB(tvp), &scred); 581 if (error) 582 goto out_cacherem; 583 } 584 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp), 585 tcnp->cn_nameptr, tcnp->cn_namelen, &scred); 586 } 587 588 out_cacherem: 589 smbfs_attr_cacheremove(fdvp); 590 smbfs_attr_cacheremove(tdvp); 591 out: 592 if (tdvp == tvp) 593 vrele(tdvp); 594 else 595 vput(tdvp); 596 if (tvp) 597 vput(tvp); 598 vrele(fdvp); 599 vrele(fvp); 600 #ifdef possible_mistake 601 #error x 602 vgone_vxlocked(fvp); 603 if (tvp) 604 vgone_vxlocked(tvp); 605 #endif 606 return error; 607 } 608 609 /* 610 * somtime it will come true... 611 * 612 * smbfs_link(struct vnode *a_tdvp, struct vnode *a_vp, 613 * struct componentname *a_cnp) 614 */ 615 static int 616 smbfs_link(struct vop_old_link_args *ap) 617 { 618 return EOPNOTSUPP; 619 } 620 621 /* 622 * smbfs_symlink link create call. 623 * Sometime it will be functional... 624 * 625 * smbfs_symlink(struct vnode *a_dvp, struct vnode **a_vpp, 626 * struct componentname *a_cnp, struct vattr *a_vap, 627 * char *a_target) 628 */ 629 static int 630 smbfs_symlink(struct vop_old_symlink_args *ap) 631 { 632 return EOPNOTSUPP; 633 } 634 635 static int 636 smbfs_mknod(struct vop_old_mknod_args *ap) 637 { 638 return EOPNOTSUPP; 639 } 640 641 /* 642 * smbfs_mkdir(struct vnode *a_dvp, struct vnode **a_vpp, 643 * struct componentname *a_cnp, struct vattr *a_vap) 644 */ 645 static int 646 smbfs_mkdir(struct vop_old_mkdir_args *ap) 647 { 648 struct vnode *dvp = ap->a_dvp; 649 /* struct vattr *vap = ap->a_vap;*/ 650 struct vnode *vp; 651 struct componentname *cnp = ap->a_cnp; 652 struct smbnode *dnp = VTOSMB(dvp); 653 struct vattr vattr; 654 struct smb_cred scred; 655 struct smbfattr fattr; 656 char *name = cnp->cn_nameptr; 657 int len = cnp->cn_namelen; 658 int error; 659 660 if ((error = VOP_GETATTR(dvp, &vattr))) { 661 return error; 662 } 663 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) 664 return EEXIST; 665 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 666 error = smbfs_smb_mkdir(dnp, name, len, &scred); 667 if (error) 668 return error; 669 error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred); 670 if (error) 671 return error; 672 error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); 673 if (error) 674 return error; 675 *ap->a_vpp = vp; 676 return 0; 677 } 678 679 /* 680 * smbfs_remove directory call 681 * 682 * smbfs_rmdir(struct vnode *a_dvp, struct vnode *a_vp, 683 * struct componentname *a_cnp) 684 */ 685 static int 686 smbfs_rmdir(struct vop_old_rmdir_args *ap) 687 { 688 struct vnode *vp = ap->a_vp; 689 struct vnode *dvp = ap->a_dvp; 690 struct componentname *cnp = ap->a_cnp; 691 /* struct smbmount *smp = VTOSMBFS(vp);*/ 692 struct smbnode *dnp = VTOSMB(dvp); 693 struct smbnode *np = VTOSMB(vp); 694 struct smb_cred scred; 695 int error; 696 697 if (dvp == vp) 698 return EINVAL; 699 700 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 701 error = smbfs_smb_rmdir(np, &scred); 702 dnp->n_flag |= NMODIFIED; 703 smbfs_attr_cacheremove(dvp); 704 return error; 705 } 706 707 /* 708 * smbfs_readdir call 709 * 710 * smbfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 711 * int *a_eofflag, off_t *a_cookies, int a_ncookies) 712 */ 713 static int 714 smbfs_readdir(struct vop_readdir_args *ap) 715 { 716 struct vnode *vp = ap->a_vp; 717 struct uio *uio = ap->a_uio; 718 int error; 719 720 if (vp->v_type != VDIR) 721 return (EPERM); 722 #ifdef notnow 723 if (ap->a_ncookies) { 724 kprintf("smbfs_readdir: no support for cookies now..."); 725 return (EOPNOTSUPP); 726 } 727 #endif 728 if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) == 0) { 729 error = smbfs_readvnode(vp, uio, ap->a_cred); 730 vn_unlock(vp); 731 } 732 return error; 733 } 734 735 /* 736 * smbfs_fsync(struct vnode *a_vp, int a_waitfor) 737 */ 738 /* ARGSUSED */ 739 static int 740 smbfs_fsync(struct vop_fsync_args *ap) 741 { 742 /* return (smb_flush(ap->a_vp, ap->a_waitfor, curthread, 1));*/ 743 return (0); 744 } 745 746 /* 747 * smbfs_print(struct vnode *a_vp) 748 */ 749 static int 750 smbfs_print(struct vop_print_args *ap) 751 { 752 struct vnode *vp = ap->a_vp; 753 struct smbnode *np = VTOSMB(vp); 754 755 if (np == NULL) { 756 kprintf("no smbnode data\n"); 757 return (0); 758 } 759 kprintf("tag VT_SMBFS, name = %s, parent = %p, opencount = %d", 760 np->n_name, np->n_parent ? np->n_parent : NULL, 761 np->n_opencount); 762 lockmgr_printinfo(&vp->v_lock); 763 kprintf("\n"); 764 return (0); 765 } 766 767 /* 768 * smbfs_pathconf(struct vnode *vp, int name, register_t *retval) 769 */ 770 static int 771 smbfs_pathconf(struct vop_pathconf_args *ap) 772 { 773 struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp)); 774 struct smb_vc *vcp = SSTOVC(smp->sm_share); 775 register_t *retval = ap->a_retval; 776 int error = 0; 777 778 switch (ap->a_name) { 779 case _PC_LINK_MAX: 780 *retval = 0; 781 break; 782 case _PC_NAME_MAX: 783 *retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12; 784 break; 785 case _PC_PATH_MAX: 786 *retval = 800; /* XXX: a correct one ? */ 787 break; 788 default: 789 error = EINVAL; 790 } 791 return error; 792 } 793 794 /* 795 * smbfs_strategy(struct vnode *a_vp, struct bio *a_bio) 796 */ 797 static int 798 smbfs_strategy(struct vop_strategy_args *ap) 799 { 800 struct bio *bio = ap->a_bio; 801 struct buf *bp = bio->bio_buf; 802 struct thread *td = NULL; 803 int error = 0; 804 805 SMBVDEBUG("\n"); 806 if ((bp->b_flags & B_ASYNC) == 0) 807 td = curthread; /* XXX */ 808 809 if ((bp->b_flags & B_ASYNC) == 0 ) 810 error = smbfs_doio(ap->a_vp, bio, proc0.p_ucred, td); 811 return error; 812 } 813 814 /* 815 * smbfs_bmap(struct vnode *a_vp, off_t a_loffset, 816 * off_t *a_doffsetp, int *a_runp, int *a_runb) 817 */ 818 static int 819 smbfs_bmap(struct vop_bmap_args *ap) 820 { 821 if (ap->a_doffsetp != NULL) 822 *ap->a_doffsetp = ap->a_loffset; 823 if (ap->a_runp != NULL) 824 *ap->a_runp = 0; 825 if (ap->a_runb != NULL) 826 *ap->a_runb = 0; 827 return (0); 828 } 829 830 /* 831 * smbfs_ioctl(struct vnode *a_vp, u_long a_command, caddr_t a_data, 832 * int fflag, struct ucred *cred, struct proc *p) 833 */ 834 int 835 smbfs_ioctl(struct vop_ioctl_args *ap) 836 { 837 return EINVAL; 838 } 839 840 static char smbfs_atl[] = "rhsvda"; 841 842 /* 843 * smbfs_getextattr(struct vnode *a_vp, char *a_name, struct uio *a_uio, 844 * struct ucred *a_cred) 845 */ 846 static int 847 smbfs_getextattr(struct vop_getextattr_args *ap) 848 { 849 struct vnode *vp = ap->a_vp; 850 struct ucred *cred = ap->a_cred; 851 struct uio *uio = ap->a_uio; 852 const char *name = ap->a_name; 853 struct smbnode *np = VTOSMB(vp); 854 struct vattr vattr; 855 char buf[10]; 856 int i, attr, error; 857 858 error = VOP_ACCESS(vp, VREAD, cred); 859 if (error) 860 return error; 861 error = VOP_GETATTR(vp, &vattr); 862 if (error) 863 return error; 864 if (strcmp(name, "dosattr") == 0) { 865 attr = np->n_dosattr; 866 for (i = 0; i < 6; i++, attr >>= 1) 867 buf[i] = (attr & 1) ? smbfs_atl[i] : '-'; 868 buf[i] = 0; 869 error = uiomove(buf, i, uio); 870 871 } else 872 error = EINVAL; 873 return error; 874 } 875 876 /* 877 * Since we expected to support F_GETLK (and SMB protocol has no such function), 878 * it is necessary to use lf_advlock(). It would be nice if this function had 879 * a callback mechanism because it will help to improve a level of consistency. 880 * 881 * smbfs_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, 882 * struct flock *a_fl, int a_flags) 883 */ 884 int 885 smbfs_advlock(struct vop_advlock_args *ap) 886 { 887 struct vnode *vp = ap->a_vp; 888 struct smbnode *np = VTOSMB(vp); 889 struct flock *fl = ap->a_fl; 890 caddr_t id = (caddr_t)1 /* ap->a_id */; 891 /* int flags = ap->a_flags;*/ 892 struct thread *td = curthread; /* XXX */ 893 struct smb_cred scred; 894 off_t start, end, size; 895 int error, lkop; 896 897 if (vp->v_type == VDIR) { 898 /* 899 * SMB protocol have no support for directory locking. 900 * Although locks can be processed on local machine, I don't 901 * think that this is a good idea, because some programs 902 * can work wrong assuming directory is locked. So, we just 903 * return 'operation not supported 904 */ 905 return EOPNOTSUPP; 906 } 907 size = np->n_size; 908 switch (fl->l_whence) { 909 case SEEK_SET: 910 case SEEK_CUR: 911 start = fl->l_start; 912 break; 913 case SEEK_END: 914 start = fl->l_start + size; 915 default: 916 return EINVAL; 917 } 918 if (start < 0) 919 return EINVAL; 920 if (fl->l_len == 0) 921 end = -1; 922 else { 923 end = start + fl->l_len - 1; 924 if (end < start) 925 return EINVAL; 926 } 927 smb_makescred(&scred, td, td->td_proc ? td->td_proc->p_ucred : NULL); 928 switch (ap->a_op) { 929 case F_SETLK: 930 switch (fl->l_type) { 931 case F_WRLCK: 932 lkop = SMB_LOCK_EXCL; 933 break; 934 case F_RDLCK: 935 lkop = SMB_LOCK_SHARED; 936 break; 937 case F_UNLCK: 938 lkop = SMB_LOCK_RELEASE; 939 break; 940 default: 941 return EINVAL; 942 } 943 error = lf_advlock(ap, &np->n_lockf, size); 944 if (error) 945 break; 946 lkop = SMB_LOCK_EXCL; 947 error = smbfs_smb_lock(np, lkop, id, start, end, &scred); 948 if (error) { 949 ap->a_op = F_UNLCK; 950 lf_advlock(ap, &np->n_lockf, size); 951 } 952 break; 953 case F_UNLCK: 954 lf_advlock(ap, &np->n_lockf, size); 955 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, &scred); 956 break; 957 case F_GETLK: 958 error = lf_advlock(ap, &np->n_lockf, size); 959 break; 960 default: 961 return EINVAL; 962 } 963 return error; 964 } 965 966 static int 967 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop) 968 { 969 static const char *badchars = "*/:<>;?"; 970 static const char *badchars83 = " +|,"; 971 const char *cp; 972 int i, error; 973 974 /* 975 * Backslash characters, being a path delimiter, are prohibited 976 * within a path component even for LOOKUP operations. 977 */ 978 if (index(name, '\\') != NULL) 979 return ENOENT; 980 981 if (nameiop == NAMEI_LOOKUP) 982 return 0; 983 error = ENOENT; 984 if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { 985 /* 986 * Name should conform 8.3 format 987 */ 988 if (nmlen > 12) 989 return ENAMETOOLONG; 990 cp = index(name, '.'); 991 if (cp == NULL) 992 return error; 993 if (cp == name || (cp - name) > 8) 994 return error; 995 cp = index(cp + 1, '.'); 996 if (cp != NULL) 997 return error; 998 for (cp = name, i = 0; i < nmlen; i++, cp++) 999 if (index(badchars83, *cp) != NULL) 1000 return error; 1001 } 1002 for (cp = name, i = 0; i < nmlen; i++, cp++) 1003 if (index(badchars, *cp) != NULL) 1004 return error; 1005 return 0; 1006 } 1007 1008 /* 1009 * Things go even weird without fixed inode numbers... 1010 * 1011 * smbfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 1012 * struct componentname *a_cnp) 1013 */ 1014 int 1015 smbfs_lookup(struct vop_old_lookup_args *ap) 1016 { 1017 struct componentname *cnp = ap->a_cnp; 1018 struct thread *td = cnp->cn_td; 1019 struct vnode *dvp = ap->a_dvp; 1020 struct vnode **vpp = ap->a_vpp; 1021 struct vnode *vp; 1022 struct smbmount *smp; 1023 struct mount *mp = dvp->v_mount; 1024 struct smbnode *dnp; 1025 struct smbfattr fattr, *fap; 1026 struct smb_cred scred; 1027 char *name = cnp->cn_nameptr; 1028 int flags = cnp->cn_flags; 1029 int nameiop = cnp->cn_nameiop; 1030 int nmlen = cnp->cn_namelen; 1031 int lockparent, wantparent, error, isdot; 1032 1033 SMBVDEBUG("\n"); 1034 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 1035 *vpp = NULL; 1036 if (dvp->v_type != VDIR) 1037 return ENOTDIR; 1038 if ((flags & CNP_ISDOTDOT) && (dvp->v_flag & VROOT)) { 1039 SMBFSERR("invalid '..'\n"); 1040 return EIO; 1041 } 1042 #ifdef SMB_VNODE_DEBUG 1043 { 1044 char *cp, c; 1045 1046 cp = name + nmlen; 1047 c = *cp; 1048 *cp = 0; 1049 SMBVDEBUG("%d '%s' in '%s' id=d\n", nameiop, name, 1050 VTOSMB(dvp)->n_name); 1051 *cp = c; 1052 } 1053 #endif 1054 if ((mp->mnt_flag & MNT_RDONLY) && nameiop != NAMEI_LOOKUP) 1055 return EROFS; 1056 if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred)) != 0) 1057 return error; 1058 lockparent = flags & CNP_LOCKPARENT; 1059 wantparent = flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 1060 smp = VFSTOSMBFS(mp); 1061 dnp = VTOSMB(dvp); 1062 isdot = (nmlen == 1 && name[0] == '.'); 1063 1064 error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop); 1065 1066 if (error) 1067 return ENOENT; 1068 1069 error = 0; 1070 smb_makescred(&scred, td, cnp->cn_cred); 1071 fap = &fattr; 1072 if (flags & CNP_ISDOTDOT) { 1073 error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, fap, 1074 &scred); 1075 SMBVDEBUG("result of dotdot lookup: %d\n", error); 1076 } else { 1077 fap = &fattr; 1078 error = smbfs_smb_lookup(dnp, name, nmlen, fap, &scred); 1079 /* if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')*/ 1080 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error); 1081 } 1082 if (error && error != ENOENT) 1083 return error; 1084 if (error) { /* entry not found */ 1085 /* 1086 * Handle RENAME or CREATE case... 1087 */ 1088 if ((nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME) && wantparent) { 1089 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1090 if (error) 1091 return error; 1092 if (!lockparent) { 1093 vn_unlock(dvp); 1094 cnp->cn_flags |= CNP_PDIRUNLOCK; 1095 } 1096 return (EJUSTRETURN); 1097 } 1098 return ENOENT; 1099 }/* else { 1100 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum); 1101 }*/ 1102 /* 1103 * handle DELETE case ... 1104 */ 1105 if (nameiop == NAMEI_DELETE) { /* delete last component */ 1106 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1107 if (error) 1108 return error; 1109 if (isdot) { 1110 vref(dvp); 1111 *vpp = dvp; 1112 return 0; 1113 } 1114 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1115 if (error) 1116 return error; 1117 *vpp = vp; 1118 if (!lockparent) { 1119 vn_unlock(dvp); 1120 cnp->cn_flags |= CNP_PDIRUNLOCK; 1121 } 1122 return 0; 1123 } 1124 if (nameiop == NAMEI_RENAME && wantparent) { 1125 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1126 if (error) 1127 return error; 1128 if (isdot) 1129 return EISDIR; 1130 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1131 if (error) 1132 return error; 1133 *vpp = vp; 1134 if (!lockparent) { 1135 vn_unlock(dvp); 1136 cnp->cn_flags |= CNP_PDIRUNLOCK; 1137 } 1138 return 0; 1139 } 1140 if (flags & CNP_ISDOTDOT) { 1141 vn_unlock(dvp); 1142 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp); 1143 if (error) { 1144 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 1145 return error; 1146 } 1147 if (lockparent) { 1148 error = vn_lock(dvp, LK_EXCLUSIVE); 1149 if (error) { 1150 cnp->cn_flags |= CNP_PDIRUNLOCK; 1151 vput(vp); 1152 return error; 1153 } 1154 } 1155 *vpp = vp; 1156 } else if (isdot) { 1157 vref(dvp); 1158 *vpp = dvp; 1159 } else { 1160 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1161 if (error) 1162 return error; 1163 *vpp = vp; 1164 SMBVDEBUG("lookup: getnewvp!\n"); 1165 if (!lockparent) { 1166 vn_unlock(dvp); 1167 cnp->cn_flags |= CNP_PDIRUNLOCK; 1168 } 1169 } 1170 return 0; 1171 } 1172