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