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 1.31 2006/06/13 12:31:57 corecode 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 vnodeopv_entry_desc smbfs_vnodeop_entries[] = { 90 { &vop_default_desc, vop_defaultop }, 91 { &vop_access_desc, (vnodeopv_entry_t) smbfs_access }, 92 { &vop_advlock_desc, (vnodeopv_entry_t) smbfs_advlock }, 93 { &vop_bmap_desc, (vnodeopv_entry_t) smbfs_bmap }, 94 { &vop_close_desc, (vnodeopv_entry_t) smbfs_closel }, 95 { &vop_old_create_desc, (vnodeopv_entry_t) smbfs_create }, 96 { &vop_fsync_desc, (vnodeopv_entry_t) smbfs_fsync }, 97 { &vop_getattr_desc, (vnodeopv_entry_t) smbfs_getattr }, 98 { &vop_getpages_desc, (vnodeopv_entry_t) smbfs_getpages }, 99 { &vop_inactive_desc, (vnodeopv_entry_t) smbfs_inactive }, 100 { &vop_ioctl_desc, (vnodeopv_entry_t) smbfs_ioctl }, 101 { &vop_islocked_desc, (vnodeopv_entry_t) vop_stdislocked }, 102 { &vop_old_link_desc, (vnodeopv_entry_t) smbfs_link }, 103 { &vop_lock_desc, (vnodeopv_entry_t) vop_stdlock }, 104 { &vop_old_lookup_desc, (vnodeopv_entry_t) smbfs_lookup }, 105 { &vop_old_mkdir_desc, (vnodeopv_entry_t) smbfs_mkdir }, 106 { &vop_old_mknod_desc, (vnodeopv_entry_t) smbfs_mknod }, 107 { &vop_open_desc, (vnodeopv_entry_t) smbfs_open }, 108 { &vop_pathconf_desc, (vnodeopv_entry_t) smbfs_pathconf }, 109 { &vop_print_desc, (vnodeopv_entry_t) smbfs_print }, 110 { &vop_putpages_desc, (vnodeopv_entry_t) smbfs_putpages }, 111 { &vop_read_desc, (vnodeopv_entry_t) smbfs_read }, 112 { &vop_readdir_desc, (vnodeopv_entry_t) smbfs_readdir }, 113 { &vop_reclaim_desc, (vnodeopv_entry_t) smbfs_reclaim }, 114 { &vop_old_remove_desc, (vnodeopv_entry_t) smbfs_remove }, 115 { &vop_old_rename_desc, (vnodeopv_entry_t) smbfs_rename }, 116 { &vop_old_rmdir_desc, (vnodeopv_entry_t) smbfs_rmdir }, 117 { &vop_setattr_desc, (vnodeopv_entry_t) smbfs_setattr }, 118 { &vop_strategy_desc, (vnodeopv_entry_t) smbfs_strategy }, 119 { &vop_old_symlink_desc, (vnodeopv_entry_t) smbfs_symlink }, 120 { &vop_unlock_desc, (vnodeopv_entry_t) vop_stdunlock }, 121 { &vop_write_desc, (vnodeopv_entry_t) smbfs_write }, 122 { &vop_getextattr_desc, (vnodeopv_entry_t) smbfs_getextattr }, 123 /* { &vop_setextattr_desc, (vnodeopv_entry_t) smbfs_setextattr },*/ 124 { NULL, NULL } 125 }; 126 127 /* 128 * smbfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 129 * struct thread *a_td) 130 */ 131 static int 132 smbfs_access(struct vop_access_args *ap) 133 { 134 struct vnode *vp = ap->a_vp; 135 struct ucred *cred = ap->a_cred; 136 u_int mode = ap->a_mode; 137 struct smbmount *smp = VTOSMBFS(vp); 138 int error = 0; 139 140 SMBVDEBUG("\n"); 141 if ((mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) { 142 switch (vp->v_type) { 143 case VREG: case VDIR: case VLNK: 144 return EROFS; 145 default: 146 break; 147 } 148 } 149 if (cred->cr_uid == 0) 150 return 0; 151 if (cred->cr_uid != smp->sm_args.uid) { 152 mode >>= 3; 153 if (!groupmember(smp->sm_args.gid, cred)) 154 mode >>= 3; 155 } 156 error = (((vp->v_type == VREG) ? smp->sm_args.file_mode : smp->sm_args.dir_mode) & mode) == mode ? 0 : EACCES; 157 return error; 158 } 159 160 /* 161 * smbfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 162 * struct thread *a_td) 163 */ 164 /* ARGSUSED */ 165 static int 166 smbfs_open(struct vop_open_args *ap) 167 { 168 struct vnode *vp = ap->a_vp; 169 struct smbnode *np = VTOSMB(vp); 170 struct smb_cred scred; 171 struct vattr vattr; 172 int mode = ap->a_mode; 173 int error, accmode; 174 175 SMBVDEBUG("%s,%d\n", np->n_name, np->n_opencount); 176 if (vp->v_type != VREG && vp->v_type != VDIR) { 177 SMBFSERR("open eacces vtype=%d\n", vp->v_type); 178 return EACCES; 179 } 180 if (vp->v_type == VDIR) { 181 if (np->n_opencount == 0) 182 np->n_cached_cred = crhold(ap->a_cred); 183 np->n_opencount++; 184 return (vop_stdopen(ap)); 185 } 186 if (np->n_flag & NMODIFIED) { 187 if ((error = smbfs_vinvalbuf(vp, V_SAVE, 1)) == EINTR) 188 return error; 189 smbfs_attr_cacheremove(vp); 190 error = VOP_GETATTR(vp, &vattr); 191 if (error) 192 return error; 193 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 194 } else { 195 error = VOP_GETATTR(vp, &vattr); 196 if (error) 197 return error; 198 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { 199 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 200 if (error == EINTR) 201 return error; 202 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 203 } 204 } 205 if (np->n_opencount) { 206 np->n_opencount++; 207 return (vop_stdopen(ap)); 208 } 209 accmode = SMB_AM_OPENREAD; 210 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 211 accmode = SMB_AM_OPENRW; 212 smb_makescred(&scred, curthread, ap->a_cred); 213 error = smbfs_smb_open(np, accmode, &scred); 214 if (error) { 215 if (mode & FWRITE) 216 return EACCES; 217 accmode = SMB_AM_OPENREAD; 218 error = smbfs_smb_open(np, accmode, &scred); 219 } 220 if (!error) { 221 np->n_cached_cred = crhold(ap->a_cred); 222 np->n_opencount++; 223 } 224 smbfs_attr_cacheremove(vp); 225 if (error == 0) 226 vop_stdopen(ap); 227 return error; 228 } 229 230 static int 231 smbfs_closel(struct vop_close_args *ap) 232 { 233 struct vnode *vp = ap->a_vp; 234 struct smbnode *np = VTOSMB(vp); 235 struct smb_cred scred; 236 struct vattr vattr; 237 int error; 238 239 SMBVDEBUG("name=%s, pid=%d, c=%d\n",np->n_name, p->p_pid, np->n_opencount); 240 241 smb_makescred(&scred, curthread, proc0.p_ucred); 242 error = 0; 243 244 if (np->n_opencount == 0) { 245 if (vp->v_type != VDIR) 246 SMBERROR("Negative opencount\n"); 247 goto done; 248 } 249 np->n_opencount--; 250 if (vp->v_type == VDIR) { 251 if (np->n_opencount) 252 goto done; 253 if (np->n_dirseq) { 254 smbfs_findclose(np->n_dirseq, &scred); 255 np->n_dirseq = NULL; 256 } 257 } else { 258 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 259 if (np->n_opencount) 260 goto done; 261 VOP_GETATTR(vp, &vattr); 262 error = smbfs_smb_close(np->n_mount->sm_share, np->n_fid, 263 &np->n_mtime, &scred); 264 } 265 crfree(np->n_cached_cred); 266 np->n_cached_cred = NULL; 267 smbfs_attr_cacheremove(vp); 268 done: 269 vop_stdclose(ap); 270 return error; 271 } 272 273 /* 274 * smbfs_getattr call from vfs. 275 * 276 * smbfs_getattr(struct vnode *a_vp, struct vattr *a_vap, struct thread *a_td) 277 */ 278 static int 279 smbfs_getattr(struct vop_getattr_args *ap) 280 { 281 struct vnode *vp = ap->a_vp; 282 struct smbnode *np = VTOSMB(vp); 283 struct vattr *va=ap->a_vap; 284 struct smbfattr fattr; 285 struct smb_cred scred; 286 u_quad_t oldsize; 287 int error; 288 289 SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_flag & VROOT) != 0); 290 error = smbfs_attr_cachelookup(vp, va); 291 if (!error) 292 return 0; 293 SMBVDEBUG("not in the cache\n"); 294 smb_makescred(&scred, curthread, proc0.p_ucred); 295 oldsize = np->n_size; 296 error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred); 297 if (error) { 298 SMBVDEBUG("error %d\n", error); 299 return error; 300 } 301 smbfs_attr_cacheenter(vp, &fattr); 302 smbfs_attr_cachelookup(vp, va); 303 if (np->n_opencount) 304 np->n_size = oldsize; 305 return 0; 306 } 307 308 /* 309 * smbfs_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred, 310 * struct thread *a_td) 311 */ 312 static int 313 smbfs_setattr(struct vop_setattr_args *ap) 314 { 315 struct vnode *vp = ap->a_vp; 316 struct smbnode *np = VTOSMB(vp); 317 struct vattr *vap = ap->a_vap; 318 struct timespec *mtime, *atime; 319 struct smb_cred scred; 320 struct smb_share *ssp = np->n_mount->sm_share; 321 struct smb_vc *vcp = SSTOVC(ssp); 322 u_quad_t tsize = 0; 323 int isreadonly, doclose, error = 0; 324 325 SMBVDEBUG("\n"); 326 if (vap->va_flags != VNOVAL) 327 return EOPNOTSUPP; 328 isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY); 329 /* 330 * Disallow write attempts if the filesystem is mounted read-only. 331 */ 332 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 333 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 334 vap->va_mode != (mode_t)VNOVAL) && isreadonly) 335 return EROFS; 336 smb_makescred(&scred, curthread, ap->a_cred); 337 if (vap->va_size != VNOVAL) { 338 switch (vp->v_type) { 339 case VDIR: 340 return EISDIR; 341 case VREG: 342 break; 343 default: 344 return EINVAL; 345 }; 346 if (isreadonly) 347 return EROFS; 348 doclose = 0; 349 vnode_pager_setsize(vp, (u_long)vap->va_size); 350 tsize = np->n_size; 351 np->n_size = vap->va_size; 352 if (np->n_opencount == 0) { 353 error = smbfs_smb_open(np, SMB_AM_OPENRW, &scred); 354 if (error == 0) 355 doclose = 1; 356 } 357 if (error == 0) 358 error = smbfs_smb_setfsize(np, vap->va_size, &scred); 359 if (doclose) 360 smbfs_smb_close(ssp, np->n_fid, NULL, &scred); 361 if (error) { 362 np->n_size = tsize; 363 vnode_pager_setsize(vp, (u_long)tsize); 364 return error; 365 } 366 } 367 mtime = atime = NULL; 368 if (vap->va_mtime.tv_sec != VNOVAL) 369 mtime = &vap->va_mtime; 370 if (vap->va_atime.tv_sec != VNOVAL) 371 atime = &vap->va_atime; 372 if (mtime != atime) { 373 if (ap->a_cred->cr_uid != VTOSMBFS(vp)->sm_args.uid && 374 (error = suser_cred(ap->a_cred, PRISON_ROOT)) && 375 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 376 (error = VOP_ACCESS(vp, VWRITE, ap->a_cred)))) 377 return (error); 378 #if 0 379 if (mtime == NULL) 380 mtime = &np->n_mtime; 381 if (atime == NULL) 382 atime = &np->n_atime; 383 #endif 384 /* 385 * If file is opened, then we can use handle based calls. 386 * If not, use path based ones. 387 */ 388 if (np->n_opencount == 0) { 389 if (vcp->vc_flags & SMBV_WIN95) { 390 error = VOP_OPEN(vp, FWRITE, ap->a_cred, NULL); 391 if (!error) { 392 /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 393 VOP_GETATTR(vp, &vattr);*/ 394 if (mtime) 395 np->n_mtime = *mtime; 396 VOP_CLOSE(vp, FWRITE); 397 } 398 } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) { 399 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 400 /* error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);*/ 401 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) { 402 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 403 } else { 404 error = smbfs_smb_setpattr(np, 0, mtime, &scred); 405 } 406 } else { 407 if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) { 408 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 409 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) { 410 error = smbfs_smb_setftime(np, mtime, atime, &scred); 411 } else { 412 /* 413 * I have no idea how to handle this for core 414 * level servers. The possible solution is to 415 * update mtime after file is closed. 416 */ 417 SMBERROR("can't update times on an opened file\n"); 418 } 419 } 420 } 421 /* 422 * Invalidate attribute cache in case if server doesn't set 423 * required attributes. 424 */ 425 smbfs_attr_cacheremove(vp); /* invalidate cache */ 426 VOP_GETATTR(vp, vap); 427 np->n_mtime.tv_sec = vap->va_mtime.tv_sec; 428 return error; 429 } 430 /* 431 * smbfs_read call. 432 * 433 * smbfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 434 * struct ucred *a_cred) 435 */ 436 static int 437 smbfs_read(struct vop_read_args *ap) 438 { 439 struct vnode *vp = ap->a_vp; 440 struct uio *uio = ap->a_uio; 441 442 SMBVDEBUG("\n"); 443 if (vp->v_type != VREG && vp->v_type != VDIR) 444 return EPERM; 445 return smbfs_readvnode(vp, uio, ap->a_cred); 446 } 447 448 /* 449 * smbfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 450 * struct ucred *a_cred) 451 */ 452 static int 453 smbfs_write(struct vop_write_args *ap) 454 { 455 struct vnode *vp = ap->a_vp; 456 struct uio *uio = ap->a_uio; 457 458 SMBVDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid); 459 if (vp->v_type != VREG) 460 return (EPERM); 461 return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag); 462 } 463 /* 464 * smbfs_create call 465 * Create a regular file. On entry the directory to contain the file being 466 * created is locked. We must release before we return. 467 * 468 * smbfs_create(struct vnode *a_dvp, struct vnode **a_vpp, 469 * struct componentname *a_cnp, struct vattr *a_vap) 470 */ 471 static int 472 smbfs_create(struct vop_old_create_args *ap) 473 { 474 struct vnode *dvp = ap->a_dvp; 475 struct vattr *vap = ap->a_vap; 476 struct vnode **vpp=ap->a_vpp; 477 struct componentname *cnp = ap->a_cnp; 478 struct smbnode *dnp = VTOSMB(dvp); 479 struct vnode *vp; 480 struct vattr vattr; 481 struct smbfattr fattr; 482 struct smb_cred scred; 483 char *name = cnp->cn_nameptr; 484 int nmlen = cnp->cn_namelen; 485 int error; 486 487 488 SMBVDEBUG("\n"); 489 *vpp = NULL; 490 if (vap->va_type != VREG) 491 return EOPNOTSUPP; 492 if ((error = VOP_GETATTR(dvp, &vattr))) 493 return error; 494 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 495 496 error = smbfs_smb_create(dnp, name, nmlen, &scred); 497 if (error) 498 return error; 499 error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); 500 if (error) 501 return error; 502 error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp); 503 if (error) 504 return error; 505 *vpp = vp; 506 return error; 507 } 508 509 /* 510 * smbfs_remove(struct vnodeop_desc *a_desc, struct vnode *a_dvp, 511 * struct vnode *a_vp, struct componentname *a_cnp) 512 */ 513 static int 514 smbfs_remove(struct vop_old_remove_args *ap) 515 { 516 struct vnode *vp = ap->a_vp; 517 /* struct vnode *dvp = ap->a_dvp;*/ 518 struct componentname *cnp = ap->a_cnp; 519 struct smbnode *np = VTOSMB(vp); 520 struct smb_cred scred; 521 int error; 522 523 if (vp->v_type == VDIR || np->n_opencount || vp->v_usecount != 1) 524 return EPERM; 525 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 526 error = smbfs_smb_delete(np, &scred); 527 return error; 528 } 529 530 /* 531 * smbfs_file rename call 532 * 533 * smbfs_rename(struct vnode *a_fdvp, struct vnode *a_fvp, 534 * struct componentname *a_fcnp, struct vnode *a_tdvp, 535 * struct vnode *a_tvp, struct componentname *a_tcnp) 536 */ 537 static int 538 smbfs_rename(struct vop_old_rename_args *ap) 539 { 540 struct vnode *fvp = ap->a_fvp; 541 struct vnode *tvp = ap->a_tvp; 542 struct vnode *fdvp = ap->a_fdvp; 543 struct vnode *tdvp = ap->a_tdvp; 544 struct componentname *tcnp = ap->a_tcnp; 545 /* struct componentname *fcnp = ap->a_fcnp;*/ 546 struct smb_cred scred; 547 u_int16_t flags = 6; 548 int error=0; 549 550 /* Check for cross-device rename */ 551 if ((fvp->v_mount != tdvp->v_mount) || 552 (tvp && (fvp->v_mount != tvp->v_mount))) { 553 error = EXDEV; 554 goto out; 555 } 556 557 if (tvp && tvp->v_usecount > 1) { 558 error = EBUSY; 559 goto out; 560 } 561 flags = 0x10; /* verify all writes */ 562 if (fvp->v_type == VDIR) { 563 flags |= 2; 564 } else if (fvp->v_type == VREG) { 565 flags |= 1; 566 } else { 567 error = EINVAL; 568 goto out; 569 } 570 smb_makescred(&scred, tcnp->cn_td, tcnp->cn_cred); 571 /* 572 * It seems that Samba doesn't implement SMB_COM_MOVE call... 573 */ 574 #ifdef notnow 575 if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { 576 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp), 577 tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); 578 } else 579 #endif 580 { 581 /* 582 * We have to do the work atomicaly 583 */ 584 if (tvp && tvp != fvp) { 585 error = smbfs_smb_delete(VTOSMB(tvp), &scred); 586 if (error) 587 goto out_cacherem; 588 } 589 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp), 590 tcnp->cn_nameptr, tcnp->cn_namelen, &scred); 591 } 592 593 out_cacherem: 594 smbfs_attr_cacheremove(fdvp); 595 smbfs_attr_cacheremove(tdvp); 596 out: 597 if (tdvp == tvp) 598 vrele(tdvp); 599 else 600 vput(tdvp); 601 if (tvp) 602 vput(tvp); 603 vrele(fdvp); 604 vrele(fvp); 605 #ifdef possible_mistake 606 #error x 607 vgone(fvp); 608 if (tvp) 609 vgone(tvp); 610 #endif 611 return error; 612 } 613 614 /* 615 * somtime it will come true... 616 * 617 * smbfs_link(struct vnode *a_tdvp, struct vnode *a_vp, 618 * struct componentname *a_cnp) 619 */ 620 static int 621 smbfs_link(struct vop_old_link_args *ap) 622 { 623 return EOPNOTSUPP; 624 } 625 626 /* 627 * smbfs_symlink link create call. 628 * Sometime it will be functional... 629 * 630 * smbfs_symlink(struct vnode *a_dvp, struct vnode **a_vpp, 631 * struct componentname *a_cnp, struct vattr *a_vap, 632 * char *a_target) 633 */ 634 static int 635 smbfs_symlink(struct vop_old_symlink_args *ap) 636 { 637 return EOPNOTSUPP; 638 } 639 640 static int 641 smbfs_mknod(struct vop_old_mknod_args *ap) 642 { 643 return EOPNOTSUPP; 644 } 645 646 /* 647 * smbfs_mkdir(struct vnode *a_dvp, struct vnode **a_vpp, 648 * struct componentname *a_cnp, struct vattr *a_vap) 649 */ 650 static int 651 smbfs_mkdir(struct vop_old_mkdir_args *ap) 652 { 653 struct vnode *dvp = ap->a_dvp; 654 /* struct vattr *vap = ap->a_vap;*/ 655 struct vnode *vp; 656 struct componentname *cnp = ap->a_cnp; 657 struct smbnode *dnp = VTOSMB(dvp); 658 struct vattr vattr; 659 struct smb_cred scred; 660 struct smbfattr fattr; 661 char *name = cnp->cn_nameptr; 662 int len = cnp->cn_namelen; 663 int error; 664 665 if ((error = VOP_GETATTR(dvp, &vattr))) { 666 return error; 667 } 668 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) 669 return EEXIST; 670 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 671 error = smbfs_smb_mkdir(dnp, name, len, &scred); 672 if (error) 673 return error; 674 error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred); 675 if (error) 676 return error; 677 error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); 678 if (error) 679 return error; 680 *ap->a_vpp = vp; 681 return 0; 682 } 683 684 /* 685 * smbfs_remove directory call 686 * 687 * smbfs_rmdir(struct vnode *a_dvp, struct vnode *a_vp, 688 * struct componentname *a_cnp) 689 */ 690 static int 691 smbfs_rmdir(struct vop_old_rmdir_args *ap) 692 { 693 struct vnode *vp = ap->a_vp; 694 struct vnode *dvp = ap->a_dvp; 695 struct componentname *cnp = ap->a_cnp; 696 /* struct smbmount *smp = VTOSMBFS(vp);*/ 697 struct smbnode *dnp = VTOSMB(dvp); 698 struct smbnode *np = VTOSMB(vp); 699 struct smb_cred scred; 700 int error; 701 702 if (dvp == vp) 703 return EINVAL; 704 705 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 706 error = smbfs_smb_rmdir(np, &scred); 707 dnp->n_flag |= NMODIFIED; 708 smbfs_attr_cacheremove(dvp); 709 return error; 710 } 711 712 /* 713 * smbfs_readdir call 714 * 715 * smbfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 716 * int *a_eofflag, u_long *a_cookies, int a_ncookies) 717 */ 718 static int 719 smbfs_readdir(struct vop_readdir_args *ap) 720 { 721 struct vnode *vp = ap->a_vp; 722 struct uio *uio = ap->a_uio; 723 int error; 724 725 if (vp->v_type != VDIR) 726 return (EPERM); 727 #ifdef notnow 728 if (ap->a_ncookies) { 729 printf("smbfs_readdir: no support for cookies now..."); 730 return (EOPNOTSUPP); 731 } 732 #endif 733 error = smbfs_readvnode(vp, uio, ap->a_cred); 734 return error; 735 } 736 737 /* 738 * smbfs_fsync(struct vnodeop_desc *a_desc, struct vnode *a_vp, 739 * struct ucred *a_cred, int a_waitfor, struct thread *a_td) 740 */ 741 /* ARGSUSED */ 742 static int 743 smbfs_fsync(struct vop_fsync_args *ap) 744 { 745 /* return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_td, 1));*/ 746 return (0); 747 } 748 749 /* 750 * smbfs_print(struct vnode *a_vp) 751 */ 752 static int 753 smbfs_print(struct vop_print_args *ap) 754 { 755 struct vnode *vp = ap->a_vp; 756 struct smbnode *np = VTOSMB(vp); 757 758 if (np == NULL) { 759 printf("no smbnode data\n"); 760 return (0); 761 } 762 printf("tag VT_SMBFS, name = %s, parent = %p, opencount = %d", 763 np->n_name, np->n_parent ? np->n_parent : NULL, 764 np->n_opencount); 765 lockmgr_printinfo(&vp->v_lock); 766 printf("\n"); 767 return (0); 768 } 769 770 /* 771 * smbfs_pathconf(struct vnode *vp, int name, register_t *retval) 772 */ 773 static int 774 smbfs_pathconf(struct vop_pathconf_args *ap) 775 { 776 struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp)); 777 struct smb_vc *vcp = SSTOVC(smp->sm_share); 778 register_t *retval = ap->a_retval; 779 int error = 0; 780 781 switch (ap->a_name) { 782 case _PC_LINK_MAX: 783 *retval = 0; 784 break; 785 case _PC_NAME_MAX: 786 *retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12; 787 break; 788 case _PC_PATH_MAX: 789 *retval = 800; /* XXX: a correct one ? */ 790 break; 791 default: 792 error = EINVAL; 793 } 794 return error; 795 } 796 797 /* 798 * smbfs_strategy(struct vnode *a_vp, struct bio *a_bio) 799 */ 800 static int 801 smbfs_strategy(struct vop_strategy_args *ap) 802 { 803 struct bio *bio = ap->a_bio; 804 struct buf *bp = bio->bio_buf; 805 struct thread *td = NULL; 806 int error = 0; 807 808 SMBVDEBUG("\n"); 809 if ((bp->b_flags & B_ASYNC) == 0) 810 td = curthread; /* XXX */ 811 812 if ((bp->b_flags & B_ASYNC) == 0 ) 813 error = smbfs_doio(ap->a_vp, bio, proc0.p_ucred, td); 814 return error; 815 } 816 817 /* 818 * smbfs_bmap(struct vnode *a_vp, off_t a_loffset, struct vnode **a_vpp, 819 * off_t *a_doffsetp, int *a_runp, int *a_runb) 820 */ 821 static int 822 smbfs_bmap(struct vop_bmap_args *ap) 823 { 824 struct vnode *vp = ap->a_vp; 825 826 if (ap->a_vpp != NULL) 827 *ap->a_vpp = vp; 828 if (ap->a_doffsetp != NULL) 829 *ap->a_doffsetp = ap->a_loffset; 830 if (ap->a_runp != NULL) 831 *ap->a_runp = 0; 832 if (ap->a_runb != NULL) 833 *ap->a_runb = 0; 834 return (0); 835 } 836 837 /* 838 * smbfs_ioctl(struct vnode *a_vp, u_long a_command, caddr_t a_data, 839 * int fflag, struct ucred *cred, struct proc *p) 840 */ 841 int 842 smbfs_ioctl(struct vop_ioctl_args *ap) 843 { 844 return EINVAL; 845 } 846 847 static char smbfs_atl[] = "rhsvda"; 848 static int 849 smbfs_getextattr(struct vop_getextattr_args *ap) 850 /* { 851 IN struct vnode *a_vp; 852 IN char *a_name; 853 INOUT struct uio *a_uio; 854 IN struct ucred *a_cred; 855 IN struct thread *a_td; 856 }; 857 */ 858 { 859 struct vnode *vp = ap->a_vp; 860 struct ucred *cred = ap->a_cred; 861 struct uio *uio = ap->a_uio; 862 const char *name = ap->a_name; 863 struct smbnode *np = VTOSMB(vp); 864 struct vattr vattr; 865 char buf[10]; 866 int i, attr, error; 867 868 error = VOP_ACCESS(vp, VREAD, cred); 869 if (error) 870 return error; 871 error = VOP_GETATTR(vp, &vattr); 872 if (error) 873 return error; 874 if (strcmp(name, "dosattr") == 0) { 875 attr = np->n_dosattr; 876 for (i = 0; i < 6; i++, attr >>= 1) 877 buf[i] = (attr & 1) ? smbfs_atl[i] : '-'; 878 buf[i] = 0; 879 error = uiomove(buf, i, uio); 880 881 } else 882 error = EINVAL; 883 return error; 884 } 885 886 /* 887 * Since we expected to support F_GETLK (and SMB protocol has no such function), 888 * it is necessary to use lf_advlock(). It would be nice if this function had 889 * a callback mechanism because it will help to improve a level of consistency. 890 * 891 * smbfs_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, 892 * struct flock *a_fl, int a_flags) 893 */ 894 int 895 smbfs_advlock(struct vop_advlock_args *ap) 896 { 897 struct vnode *vp = ap->a_vp; 898 struct smbnode *np = VTOSMB(vp); 899 struct flock *fl = ap->a_fl; 900 caddr_t id = (caddr_t)1 /* ap->a_id */; 901 /* int flags = ap->a_flags;*/ 902 struct thread *td = curthread; /* XXX */ 903 struct smb_cred scred; 904 off_t start, end, size; 905 int error, lkop; 906 907 if (vp->v_type == VDIR) { 908 /* 909 * SMB protocol have no support for directory locking. 910 * Although locks can be processed on local machine, I don't 911 * think that this is a good idea, because some programs 912 * can work wrong assuming directory is locked. So, we just 913 * return 'operation not supported 914 */ 915 return EOPNOTSUPP; 916 } 917 size = np->n_size; 918 switch (fl->l_whence) { 919 case SEEK_SET: 920 case SEEK_CUR: 921 start = fl->l_start; 922 break; 923 case SEEK_END: 924 start = fl->l_start + size; 925 default: 926 return EINVAL; 927 } 928 if (start < 0) 929 return EINVAL; 930 if (fl->l_len == 0) 931 end = -1; 932 else { 933 end = start + fl->l_len - 1; 934 if (end < start) 935 return EINVAL; 936 } 937 smb_makescred(&scred, td, td->td_proc ? td->td_proc->p_ucred : NULL); 938 switch (ap->a_op) { 939 case F_SETLK: 940 switch (fl->l_type) { 941 case F_WRLCK: 942 lkop = SMB_LOCK_EXCL; 943 break; 944 case F_RDLCK: 945 lkop = SMB_LOCK_SHARED; 946 break; 947 case F_UNLCK: 948 lkop = SMB_LOCK_RELEASE; 949 break; 950 default: 951 return EINVAL; 952 } 953 error = lf_advlock(ap, &np->n_lockf, size); 954 if (error) 955 break; 956 lkop = SMB_LOCK_EXCL; 957 error = smbfs_smb_lock(np, lkop, id, start, end, &scred); 958 if (error) { 959 ap->a_op = F_UNLCK; 960 lf_advlock(ap, &np->n_lockf, size); 961 } 962 break; 963 case F_UNLCK: 964 lf_advlock(ap, &np->n_lockf, size); 965 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, &scred); 966 break; 967 case F_GETLK: 968 error = lf_advlock(ap, &np->n_lockf, size); 969 break; 970 default: 971 return EINVAL; 972 } 973 return error; 974 } 975 976 static int 977 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop) 978 { 979 static const char *badchars = "*/:<>;?"; 980 static const char *badchars83 = " +|,"; 981 const char *cp; 982 int i, error; 983 984 /* 985 * Backslash characters, being a path delimiter, are prohibited 986 * within a path component even for LOOKUP operations. 987 */ 988 if (index(name, '\\') != NULL) 989 return ENOENT; 990 991 if (nameiop == NAMEI_LOOKUP) 992 return 0; 993 error = ENOENT; 994 if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { 995 /* 996 * Name should conform 8.3 format 997 */ 998 if (nmlen > 12) 999 return ENAMETOOLONG; 1000 cp = index(name, '.'); 1001 if (cp == NULL) 1002 return error; 1003 if (cp == name || (cp - name) > 8) 1004 return error; 1005 cp = index(cp + 1, '.'); 1006 if (cp != NULL) 1007 return error; 1008 for (cp = name, i = 0; i < nmlen; i++, cp++) 1009 if (index(badchars83, *cp) != NULL) 1010 return error; 1011 } 1012 for (cp = name, i = 0; i < nmlen; i++, cp++) 1013 if (index(badchars, *cp) != NULL) 1014 return error; 1015 return 0; 1016 } 1017 1018 /* 1019 * Things go even weird without fixed inode numbers... 1020 * 1021 * smbfs_lookup(struct vnodeop_desc *a_desc, struct vnode *a_dvp, 1022 * struct vnode **a_vpp, struct componentname *a_cnp) 1023 */ 1024 int 1025 smbfs_lookup(struct vop_old_lookup_args *ap) 1026 { 1027 struct componentname *cnp = ap->a_cnp; 1028 struct thread *td = cnp->cn_td; 1029 struct vnode *dvp = ap->a_dvp; 1030 struct vnode **vpp = ap->a_vpp; 1031 struct vnode *vp; 1032 struct smbmount *smp; 1033 struct mount *mp = dvp->v_mount; 1034 struct smbnode *dnp; 1035 struct smbfattr fattr, *fap; 1036 struct smb_cred scred; 1037 char *name = cnp->cn_nameptr; 1038 int flags = cnp->cn_flags; 1039 int nameiop = cnp->cn_nameiop; 1040 int nmlen = cnp->cn_namelen; 1041 int lockparent, wantparent, error, isdot; 1042 1043 SMBVDEBUG("\n"); 1044 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 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 *vpp = NULLVP; 1080 smb_makescred(&scred, td, cnp->cn_cred); 1081 fap = &fattr; 1082 if (flags & CNP_ISDOTDOT) { 1083 error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, fap, 1084 &scred); 1085 SMBVDEBUG("result of dotdot lookup: %d\n", error); 1086 } else { 1087 fap = &fattr; 1088 error = smbfs_smb_lookup(dnp, name, nmlen, fap, &scred); 1089 /* if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')*/ 1090 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error); 1091 } 1092 if (error && error != ENOENT) 1093 return error; 1094 if (error) { /* entry not found */ 1095 /* 1096 * Handle RENAME or CREATE case... 1097 */ 1098 if ((nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME) && wantparent) { 1099 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1100 if (error) 1101 return error; 1102 if (!lockparent) { 1103 VOP_UNLOCK(dvp, 0); 1104 cnp->cn_flags |= CNP_PDIRUNLOCK; 1105 } 1106 return (EJUSTRETURN); 1107 } 1108 return ENOENT; 1109 }/* else { 1110 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum); 1111 }*/ 1112 /* 1113 * handle DELETE case ... 1114 */ 1115 if (nameiop == NAMEI_DELETE) { /* delete last component */ 1116 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1117 if (error) 1118 return error; 1119 if (isdot) { 1120 vref(dvp); 1121 *vpp = dvp; 1122 return 0; 1123 } 1124 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1125 if (error) 1126 return error; 1127 *vpp = vp; 1128 if (!lockparent) { 1129 VOP_UNLOCK(dvp, 0); 1130 cnp->cn_flags |= CNP_PDIRUNLOCK; 1131 } 1132 return 0; 1133 } 1134 if (nameiop == NAMEI_RENAME && wantparent) { 1135 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1136 if (error) 1137 return error; 1138 if (isdot) 1139 return EISDIR; 1140 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1141 if (error) 1142 return error; 1143 *vpp = vp; 1144 if (!lockparent) { 1145 VOP_UNLOCK(dvp, 0); 1146 cnp->cn_flags |= CNP_PDIRUNLOCK; 1147 } 1148 return 0; 1149 } 1150 if (flags & CNP_ISDOTDOT) { 1151 VOP_UNLOCK(dvp, 0); 1152 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp); 1153 if (error) { 1154 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 1155 return error; 1156 } 1157 if (lockparent) { 1158 error = vn_lock(dvp, LK_EXCLUSIVE); 1159 if (error) { 1160 cnp->cn_flags |= CNP_PDIRUNLOCK; 1161 vput(vp); 1162 return error; 1163 } 1164 } 1165 *vpp = vp; 1166 } else if (isdot) { 1167 vref(dvp); 1168 *vpp = dvp; 1169 } else { 1170 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1171 if (error) 1172 return error; 1173 *vpp = vp; 1174 SMBVDEBUG("lookup: getnewvp!\n"); 1175 if (!lockparent) { 1176 VOP_UNLOCK(dvp, 0); 1177 cnp->cn_flags |= CNP_PDIRUNLOCK; 1178 } 1179 } 1180 return 0; 1181 } 1182