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/namei.h> 40 #include <sys/fcntl.h> 41 #include <sys/mount.h> 42 #include <sys/unistd.h> 43 #include <sys/vnode.h> 44 #include <sys/lockf.h> 45 46 #include <vm/vm.h> 47 #include <vm/vm_extern.h> 48 #include <vm/vm_zone.h> 49 50 51 #include <netproto/smb/smb.h> 52 #include <netproto/smb/smb_conn.h> 53 #include <netproto/smb/smb_subr.h> 54 55 #include "smbfs.h" 56 #include "smbfs_node.h" 57 #include "smbfs_subr.h" 58 59 #include <sys/buf.h> 60 61 /* 62 * Prototypes for SMBFS vnode operations 63 */ 64 static int smbfs_create(struct vop_old_create_args *); 65 static int smbfs_mknod(struct vop_old_mknod_args *); 66 static int smbfs_open(struct vop_open_args *); 67 static int smbfs_closel(struct vop_close_args *); 68 static int smbfs_access(struct vop_access_args *); 69 static int smbfs_getattr(struct vop_getattr_args *); 70 static int smbfs_setattr(struct vop_setattr_args *); 71 static int smbfs_read(struct vop_read_args *); 72 static int smbfs_write(struct vop_write_args *); 73 static int smbfs_fsync(struct vop_fsync_args *); 74 static int smbfs_remove(struct vop_old_remove_args *); 75 static int smbfs_link(struct vop_old_link_args *); 76 static int smbfs_lookup(struct vop_old_lookup_args *); 77 static int smbfs_rename(struct vop_old_rename_args *); 78 static int smbfs_mkdir(struct vop_old_mkdir_args *); 79 static int smbfs_rmdir(struct vop_old_rmdir_args *); 80 static int smbfs_symlink(struct vop_old_symlink_args *); 81 static int smbfs_readdir(struct vop_readdir_args *); 82 static int smbfs_bmap(struct vop_bmap_args *); 83 static int smbfs_strategy(struct vop_strategy_args *); 84 static int smbfs_print(struct vop_print_args *); 85 static int smbfs_pathconf(struct vop_pathconf_args *ap); 86 static int smbfs_advlock(struct vop_advlock_args *); 87 static int smbfs_getextattr(struct vop_getextattr_args *ap); 88 89 struct vop_ops smbfs_vnode_vops = { 90 .vop_default = vop_defaultop, 91 .vop_access = smbfs_access, 92 .vop_advlock = smbfs_advlock, 93 .vop_bmap = smbfs_bmap, 94 .vop_close = smbfs_closel, 95 .vop_old_create = smbfs_create, 96 .vop_fsync = smbfs_fsync, 97 .vop_getattr = smbfs_getattr, 98 .vop_getpages = smbfs_getpages, 99 .vop_inactive = smbfs_inactive, 100 .vop_ioctl = smbfs_ioctl, 101 .vop_old_link = smbfs_link, 102 .vop_old_lookup = smbfs_lookup, 103 .vop_old_mkdir = smbfs_mkdir, 104 .vop_old_mknod = smbfs_mknod, 105 .vop_open = smbfs_open, 106 .vop_pathconf = smbfs_pathconf, 107 .vop_print = smbfs_print, 108 .vop_putpages = smbfs_putpages, 109 .vop_read = smbfs_read, 110 .vop_readdir = smbfs_readdir, 111 .vop_reclaim = smbfs_reclaim, 112 .vop_old_remove = smbfs_remove, 113 .vop_old_rename = smbfs_rename, 114 .vop_old_rmdir = smbfs_rmdir, 115 .vop_setattr = smbfs_setattr, 116 .vop_strategy = smbfs_strategy, 117 .vop_old_symlink = smbfs_symlink, 118 .vop_write = smbfs_write, 119 .vop_getextattr = smbfs_getextattr 120 /* .vop_setextattr = smbfs_setextattr */ 121 }; 122 123 /* 124 * smbfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred) 125 */ 126 static int 127 smbfs_access(struct vop_access_args *ap) 128 { 129 struct vnode *vp = ap->a_vp; 130 struct ucred *cred = ap->a_cred; 131 u_int mode = ap->a_mode; 132 struct smbmount *smp = VTOSMBFS(vp); 133 int error = 0; 134 135 SMBVDEBUG("\n"); 136 if ((mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) { 137 switch (vp->v_type) { 138 case VREG: case VDIR: case VLNK: 139 return EROFS; 140 default: 141 break; 142 } 143 } 144 if (cred->cr_uid == 0) 145 return 0; 146 if (cred->cr_uid != smp->sm_args.uid) { 147 mode >>= 3; 148 if (!groupmember(smp->sm_args.gid, cred)) 149 mode >>= 3; 150 } 151 error = (((vp->v_type == VREG) ? smp->sm_args.file_mode : smp->sm_args.dir_mode) & mode) == mode ? 0 : EACCES; 152 return error; 153 } 154 155 /* 156 * smbfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 157 * struct file *a_fp) 158 */ 159 /* ARGSUSED */ 160 static int 161 smbfs_open(struct vop_open_args *ap) 162 { 163 struct vnode *vp = ap->a_vp; 164 struct smbnode *np = VTOSMB(vp); 165 struct smb_cred scred; 166 struct vattr vattr; 167 int mode = ap->a_mode; 168 int error, accmode; 169 170 SMBVDEBUG("%s,%d\n", np->n_name, np->n_opencount); 171 if (vp->v_type != VREG && vp->v_type != VDIR) { 172 SMBFSERR("open eacces vtype=%d\n", vp->v_type); 173 return EACCES; 174 } 175 if (vp->v_type == VDIR) { 176 if (np->n_opencount == 0) 177 np->n_cached_cred = crhold(ap->a_cred); 178 np->n_opencount++; 179 return (vop_stdopen(ap)); 180 } 181 if (np->n_flag & NMODIFIED) { 182 if ((error = smbfs_vinvalbuf(vp, V_SAVE, 1)) == EINTR) 183 return error; 184 smbfs_attr_cacheremove(vp); 185 error = VOP_GETATTR(vp, &vattr); 186 if (error) 187 return error; 188 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 189 } else { 190 error = VOP_GETATTR(vp, &vattr); 191 if (error) 192 return error; 193 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { 194 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 195 if (error == EINTR) 196 return error; 197 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 198 } 199 } 200 if (np->n_opencount) { 201 np->n_opencount++; 202 return (vop_stdopen(ap)); 203 } 204 accmode = SMB_AM_OPENREAD; 205 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 206 accmode = SMB_AM_OPENRW; 207 smb_makescred(&scred, curthread, ap->a_cred); 208 error = smbfs_smb_open(np, accmode, &scred); 209 if (error) { 210 if (mode & FWRITE) 211 return EACCES; 212 accmode = SMB_AM_OPENREAD; 213 error = smbfs_smb_open(np, accmode, &scred); 214 } 215 if (!error) { 216 np->n_cached_cred = crhold(ap->a_cred); 217 np->n_opencount++; 218 } 219 smbfs_attr_cacheremove(vp); 220 if (error == 0) 221 vop_stdopen(ap); 222 return error; 223 } 224 225 static int 226 smbfs_closel(struct vop_close_args *ap) 227 { 228 struct vnode *vp = ap->a_vp; 229 struct smbnode *np = VTOSMB(vp); 230 struct smb_cred scred; 231 struct vattr vattr; 232 int error; 233 234 SMBVDEBUG("name=%s, pid=%d, c=%d\n",np->n_name, p->p_pid, np->n_opencount); 235 236 smb_makescred(&scred, curthread, proc0.p_ucred); 237 error = 0; 238 239 if (np->n_opencount == 0) { 240 if (vp->v_type != VDIR) 241 SMBERROR("Negative opencount\n"); 242 goto done; 243 } 244 np->n_opencount--; 245 if (vp->v_type == VDIR) { 246 if (np->n_opencount) 247 goto done; 248 if (np->n_dirseq) { 249 smbfs_findclose(np->n_dirseq, &scred); 250 np->n_dirseq = NULL; 251 } 252 } else { 253 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 254 if (np->n_opencount) 255 goto done; 256 VOP_GETATTR(vp, &vattr); 257 error = smbfs_smb_close(np->n_mount->sm_share, np->n_fid, 258 &np->n_mtime, &scred); 259 } 260 crfree(np->n_cached_cred); 261 np->n_cached_cred = NULL; 262 smbfs_attr_cacheremove(vp); 263 done: 264 vop_stdclose(ap); 265 return error; 266 } 267 268 /* 269 * smbfs_getattr call from vfs. 270 * 271 * smbfs_getattr(struct vnode *a_vp, struct vattr *a_vap) 272 */ 273 static int 274 smbfs_getattr(struct vop_getattr_args *ap) 275 { 276 struct vnode *vp = ap->a_vp; 277 struct smbnode *np = VTOSMB(vp); 278 struct vattr *va=ap->a_vap; 279 struct smbfattr fattr; 280 struct smb_cred scred; 281 u_quad_t oldsize; 282 int error; 283 284 SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_flag & VROOT) != 0); 285 error = smbfs_attr_cachelookup(vp, va); 286 if (!error) 287 return 0; 288 SMBVDEBUG("not in the cache\n"); 289 smb_makescred(&scred, curthread, proc0.p_ucred); 290 oldsize = np->n_size; 291 error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred); 292 if (error) { 293 SMBVDEBUG("error %d\n", error); 294 return error; 295 } 296 smbfs_attr_cacheenter(vp, &fattr); 297 smbfs_attr_cachelookup(vp, va); 298 if (np->n_opencount) 299 np->n_size = oldsize; 300 return 0; 301 } 302 303 /* 304 * smbfs_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred) 305 */ 306 static int 307 smbfs_setattr(struct vop_setattr_args *ap) 308 { 309 struct vnode *vp = ap->a_vp; 310 struct smbnode *np = VTOSMB(vp); 311 struct vattr *vap = ap->a_vap; 312 struct timespec *mtime, *atime; 313 struct smb_cred scred; 314 struct smb_share *ssp = np->n_mount->sm_share; 315 struct smb_vc *vcp = SSTOVC(ssp); 316 u_quad_t tsize = 0; 317 int isreadonly, doclose, error = 0; 318 319 SMBVDEBUG("\n"); 320 if (vap->va_flags != VNOVAL) 321 return EOPNOTSUPP; 322 isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY); 323 /* 324 * Disallow write attempts if the filesystem is mounted read-only. 325 */ 326 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 327 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 328 vap->va_mode != (mode_t)VNOVAL) && isreadonly) 329 return EROFS; 330 smb_makescred(&scred, curthread, ap->a_cred); 331 if (vap->va_size != VNOVAL) { 332 switch (vp->v_type) { 333 case VDIR: 334 return EISDIR; 335 case VREG: 336 break; 337 default: 338 return EINVAL; 339 }; 340 if (isreadonly) 341 return EROFS; 342 doclose = 0; 343 vnode_pager_setsize(vp, (u_long)vap->va_size); 344 tsize = np->n_size; 345 np->n_size = vap->va_size; 346 if (np->n_opencount == 0) { 347 error = smbfs_smb_open(np, SMB_AM_OPENRW, &scred); 348 if (error == 0) 349 doclose = 1; 350 } 351 if (error == 0) 352 error = smbfs_smb_setfsize(np, vap->va_size, &scred); 353 if (doclose) 354 smbfs_smb_close(ssp, np->n_fid, NULL, &scred); 355 if (error) { 356 np->n_size = tsize; 357 vnode_pager_setsize(vp, (u_long)tsize); 358 return error; 359 } 360 } 361 mtime = atime = NULL; 362 if (vap->va_mtime.tv_sec != VNOVAL) 363 mtime = &vap->va_mtime; 364 if (vap->va_atime.tv_sec != VNOVAL) 365 atime = &vap->va_atime; 366 if (mtime != atime) { 367 if (ap->a_cred->cr_uid != VTOSMBFS(vp)->sm_args.uid && 368 (error = suser_cred(ap->a_cred, PRISON_ROOT)) && 369 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 370 (error = VOP_ACCESS(vp, VWRITE, ap->a_cred)))) 371 return (error); 372 #if 0 373 if (mtime == NULL) 374 mtime = &np->n_mtime; 375 if (atime == NULL) 376 atime = &np->n_atime; 377 #endif 378 /* 379 * If file is opened, then we can use handle based calls. 380 * If not, use path based ones. 381 */ 382 if (np->n_opencount == 0) { 383 if (vcp->vc_flags & SMBV_WIN95) { 384 error = VOP_OPEN(vp, FWRITE, ap->a_cred, NULL); 385 if (!error) { 386 /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 387 VOP_GETATTR(vp, &vattr);*/ 388 if (mtime) 389 np->n_mtime = *mtime; 390 VOP_CLOSE(vp, FWRITE); 391 } 392 } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) { 393 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 394 /* error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);*/ 395 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) { 396 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 397 } else { 398 error = smbfs_smb_setpattr(np, 0, mtime, &scred); 399 } 400 } else { 401 if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) { 402 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 403 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) { 404 error = smbfs_smb_setftime(np, mtime, atime, &scred); 405 } else { 406 /* 407 * I have no idea how to handle this for core 408 * level servers. The possible solution is to 409 * update mtime after file is closed. 410 */ 411 SMBERROR("can't update times on an opened file\n"); 412 } 413 } 414 } 415 /* 416 * Invalidate attribute cache in case if server doesn't set 417 * required attributes. 418 */ 419 smbfs_attr_cacheremove(vp); /* invalidate cache */ 420 VOP_GETATTR(vp, vap); 421 np->n_mtime.tv_sec = vap->va_mtime.tv_sec; 422 return error; 423 } 424 /* 425 * smbfs_read call. 426 * 427 * smbfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 428 * struct ucred *a_cred) 429 */ 430 static int 431 smbfs_read(struct vop_read_args *ap) 432 { 433 struct vnode *vp = ap->a_vp; 434 struct uio *uio = ap->a_uio; 435 436 SMBVDEBUG("\n"); 437 if (vp->v_type != VREG && vp->v_type != VDIR) 438 return EPERM; 439 return smbfs_readvnode(vp, uio, ap->a_cred); 440 } 441 442 /* 443 * smbfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 444 * struct ucred *a_cred) 445 */ 446 static int 447 smbfs_write(struct vop_write_args *ap) 448 { 449 struct vnode *vp = ap->a_vp; 450 struct uio *uio = ap->a_uio; 451 452 SMBVDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid); 453 if (vp->v_type != VREG) 454 return (EPERM); 455 return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag); 456 } 457 /* 458 * smbfs_create call 459 * Create a regular file. On entry the directory to contain the file being 460 * created is locked. We must release before we return. 461 * 462 * smbfs_create(struct vnode *a_dvp, struct vnode **a_vpp, 463 * struct componentname *a_cnp, struct vattr *a_vap) 464 */ 465 static int 466 smbfs_create(struct vop_old_create_args *ap) 467 { 468 struct vnode *dvp = ap->a_dvp; 469 struct vattr *vap = ap->a_vap; 470 struct vnode **vpp=ap->a_vpp; 471 struct componentname *cnp = ap->a_cnp; 472 struct smbnode *dnp = VTOSMB(dvp); 473 struct vnode *vp; 474 struct vattr vattr; 475 struct smbfattr fattr; 476 struct smb_cred scred; 477 char *name = cnp->cn_nameptr; 478 int nmlen = cnp->cn_namelen; 479 int error; 480 481 482 SMBVDEBUG("\n"); 483 *vpp = NULL; 484 if (vap->va_type != VREG) 485 return EOPNOTSUPP; 486 if ((error = VOP_GETATTR(dvp, &vattr))) 487 return error; 488 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 489 490 error = smbfs_smb_create(dnp, name, nmlen, &scred); 491 if (error) 492 return error; 493 error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); 494 if (error) 495 return error; 496 error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp); 497 if (error) 498 return error; 499 *vpp = vp; 500 return error; 501 } 502 503 /* 504 * smbfs_remove(struct vnode *a_dvp, struct vnode *a_vp, 505 * struct componentname *a_cnp) 506 */ 507 static int 508 smbfs_remove(struct vop_old_remove_args *ap) 509 { 510 struct vnode *vp = ap->a_vp; 511 /* struct vnode *dvp = ap->a_dvp;*/ 512 struct componentname *cnp = ap->a_cnp; 513 struct smbnode *np = VTOSMB(vp); 514 struct smb_cred scred; 515 int error; 516 517 if (vp->v_type == VDIR || np->n_opencount || vp->v_sysref.refcnt > 1) 518 return EPERM; 519 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 520 error = smbfs_smb_delete(np, &scred); 521 return error; 522 } 523 524 /* 525 * smbfs_file rename call 526 * 527 * smbfs_rename(struct vnode *a_fdvp, struct vnode *a_fvp, 528 * struct componentname *a_fcnp, struct vnode *a_tdvp, 529 * struct vnode *a_tvp, struct componentname *a_tcnp) 530 */ 531 static int 532 smbfs_rename(struct vop_old_rename_args *ap) 533 { 534 struct vnode *fvp = ap->a_fvp; 535 struct vnode *tvp = ap->a_tvp; 536 struct vnode *fdvp = ap->a_fdvp; 537 struct vnode *tdvp = ap->a_tdvp; 538 struct componentname *tcnp = ap->a_tcnp; 539 /* struct componentname *fcnp = ap->a_fcnp;*/ 540 struct smb_cred scred; 541 u_int16_t flags = 6; 542 int error=0; 543 544 /* Check for cross-device rename */ 545 if ((fvp->v_mount != tdvp->v_mount) || 546 (tvp && (fvp->v_mount != tvp->v_mount))) { 547 error = EXDEV; 548 goto out; 549 } 550 551 if (tvp && tvp->v_sysref.refcnt > 1) { 552 error = EBUSY; 553 goto out; 554 } 555 flags = 0x10; /* verify all writes */ 556 if (fvp->v_type == VDIR) { 557 flags |= 2; 558 } else if (fvp->v_type == VREG) { 559 flags |= 1; 560 } else { 561 error = EINVAL; 562 goto out; 563 } 564 smb_makescred(&scred, tcnp->cn_td, tcnp->cn_cred); 565 /* 566 * It seems that Samba doesn't implement SMB_COM_MOVE call... 567 */ 568 #ifdef notnow 569 if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { 570 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp), 571 tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); 572 } else 573 #endif 574 { 575 /* 576 * We have to do the work atomicaly 577 */ 578 if (tvp && tvp != fvp) { 579 error = smbfs_smb_delete(VTOSMB(tvp), &scred); 580 if (error) 581 goto out_cacherem; 582 } 583 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp), 584 tcnp->cn_nameptr, tcnp->cn_namelen, &scred); 585 } 586 587 out_cacherem: 588 smbfs_attr_cacheremove(fdvp); 589 smbfs_attr_cacheremove(tdvp); 590 out: 591 if (tdvp == tvp) 592 vrele(tdvp); 593 else 594 vput(tdvp); 595 if (tvp) 596 vput(tvp); 597 vrele(fdvp); 598 vrele(fvp); 599 #ifdef possible_mistake 600 #error x 601 vgone_vxlocked(fvp); 602 if (tvp) 603 vgone_vxlocked(tvp); 604 #endif 605 return error; 606 } 607 608 /* 609 * somtime it will come true... 610 * 611 * smbfs_link(struct vnode *a_tdvp, struct vnode *a_vp, 612 * struct componentname *a_cnp) 613 */ 614 static int 615 smbfs_link(struct vop_old_link_args *ap) 616 { 617 return EOPNOTSUPP; 618 } 619 620 /* 621 * smbfs_symlink link create call. 622 * Sometime it will be functional... 623 * 624 * smbfs_symlink(struct vnode *a_dvp, struct vnode **a_vpp, 625 * struct componentname *a_cnp, struct vattr *a_vap, 626 * char *a_target) 627 */ 628 static int 629 smbfs_symlink(struct vop_old_symlink_args *ap) 630 { 631 return EOPNOTSUPP; 632 } 633 634 static int 635 smbfs_mknod(struct vop_old_mknod_args *ap) 636 { 637 return EOPNOTSUPP; 638 } 639 640 /* 641 * smbfs_mkdir(struct vnode *a_dvp, struct vnode **a_vpp, 642 * struct componentname *a_cnp, struct vattr *a_vap) 643 */ 644 static int 645 smbfs_mkdir(struct vop_old_mkdir_args *ap) 646 { 647 struct vnode *dvp = ap->a_dvp; 648 /* struct vattr *vap = ap->a_vap;*/ 649 struct vnode *vp; 650 struct componentname *cnp = ap->a_cnp; 651 struct smbnode *dnp = VTOSMB(dvp); 652 struct vattr vattr; 653 struct smb_cred scred; 654 struct smbfattr fattr; 655 char *name = cnp->cn_nameptr; 656 int len = cnp->cn_namelen; 657 int error; 658 659 if ((error = VOP_GETATTR(dvp, &vattr))) { 660 return error; 661 } 662 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) 663 return EEXIST; 664 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 665 error = smbfs_smb_mkdir(dnp, name, len, &scred); 666 if (error) 667 return error; 668 error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred); 669 if (error) 670 return error; 671 error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); 672 if (error) 673 return error; 674 *ap->a_vpp = vp; 675 return 0; 676 } 677 678 /* 679 * smbfs_remove directory call 680 * 681 * smbfs_rmdir(struct vnode *a_dvp, struct vnode *a_vp, 682 * struct componentname *a_cnp) 683 */ 684 static int 685 smbfs_rmdir(struct vop_old_rmdir_args *ap) 686 { 687 struct vnode *vp = ap->a_vp; 688 struct vnode *dvp = ap->a_dvp; 689 struct componentname *cnp = ap->a_cnp; 690 /* struct smbmount *smp = VTOSMBFS(vp);*/ 691 struct smbnode *dnp = VTOSMB(dvp); 692 struct smbnode *np = VTOSMB(vp); 693 struct smb_cred scred; 694 int error; 695 696 if (dvp == vp) 697 return EINVAL; 698 699 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 700 error = smbfs_smb_rmdir(np, &scred); 701 dnp->n_flag |= NMODIFIED; 702 smbfs_attr_cacheremove(dvp); 703 return error; 704 } 705 706 /* 707 * smbfs_readdir call 708 * 709 * smbfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 710 * int *a_eofflag, off_t *a_cookies, int a_ncookies) 711 */ 712 static int 713 smbfs_readdir(struct vop_readdir_args *ap) 714 { 715 struct vnode *vp = ap->a_vp; 716 struct uio *uio = ap->a_uio; 717 int error; 718 719 if (vp->v_type != VDIR) 720 return (EPERM); 721 #ifdef notnow 722 if (ap->a_ncookies) { 723 kprintf("smbfs_readdir: no support for cookies now..."); 724 return (EOPNOTSUPP); 725 } 726 #endif 727 if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) == 0) { 728 error = smbfs_readvnode(vp, uio, ap->a_cred); 729 vn_unlock(vp); 730 } 731 return error; 732 } 733 734 /* 735 * smbfs_fsync(struct vnode *a_vp, int a_waitfor) 736 */ 737 /* ARGSUSED */ 738 static int 739 smbfs_fsync(struct vop_fsync_args *ap) 740 { 741 /* return (smb_flush(ap->a_vp, ap->a_waitfor, curthread, 1));*/ 742 return (0); 743 } 744 745 /* 746 * smbfs_print(struct vnode *a_vp) 747 */ 748 static int 749 smbfs_print(struct vop_print_args *ap) 750 { 751 struct vnode *vp = ap->a_vp; 752 struct smbnode *np = VTOSMB(vp); 753 754 if (np == NULL) { 755 kprintf("no smbnode data\n"); 756 return (0); 757 } 758 kprintf("tag VT_SMBFS, name = %s, parent = %p, opencount = %d", 759 np->n_name, np->n_parent ? np->n_parent : NULL, 760 np->n_opencount); 761 lockmgr_printinfo(&vp->v_lock); 762 kprintf("\n"); 763 return (0); 764 } 765 766 /* 767 * smbfs_pathconf(struct vnode *vp, int name, register_t *retval) 768 */ 769 static int 770 smbfs_pathconf(struct vop_pathconf_args *ap) 771 { 772 struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp)); 773 struct smb_vc *vcp = SSTOVC(smp->sm_share); 774 register_t *retval = ap->a_retval; 775 int error = 0; 776 777 switch (ap->a_name) { 778 case _PC_LINK_MAX: 779 *retval = 0; 780 break; 781 case _PC_NAME_MAX: 782 *retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12; 783 break; 784 case _PC_PATH_MAX: 785 *retval = 800; /* XXX: a correct one ? */ 786 break; 787 default: 788 error = EINVAL; 789 } 790 return error; 791 } 792 793 /* 794 * smbfs_strategy(struct vnode *a_vp, struct bio *a_bio) 795 */ 796 static int 797 smbfs_strategy(struct vop_strategy_args *ap) 798 { 799 struct bio *bio = ap->a_bio; 800 struct buf *bp = bio->bio_buf; 801 struct thread *td = NULL; 802 int error = 0; 803 804 SMBVDEBUG("\n"); 805 if ((bp->b_flags & B_ASYNC) == 0) 806 td = curthread; /* XXX */ 807 808 if ((bp->b_flags & B_ASYNC) == 0 ) 809 error = smbfs_doio(ap->a_vp, bio, proc0.p_ucred, td); 810 return error; 811 } 812 813 /* 814 * smbfs_bmap(struct vnode *a_vp, off_t a_loffset, 815 * off_t *a_doffsetp, int *a_runp, int *a_runb) 816 */ 817 static int 818 smbfs_bmap(struct vop_bmap_args *ap) 819 { 820 if (ap->a_doffsetp != NULL) 821 *ap->a_doffsetp = ap->a_loffset; 822 if (ap->a_runp != NULL) 823 *ap->a_runp = 0; 824 if (ap->a_runb != NULL) 825 *ap->a_runb = 0; 826 return (0); 827 } 828 829 /* 830 * smbfs_ioctl(struct vnode *a_vp, u_long a_command, caddr_t a_data, 831 * int fflag, struct ucred *cred, struct proc *p) 832 */ 833 int 834 smbfs_ioctl(struct vop_ioctl_args *ap) 835 { 836 return EINVAL; 837 } 838 839 static char smbfs_atl[] = "rhsvda"; 840 841 /* 842 * smbfs_getextattr(struct vnode *a_vp, char *a_name, struct uio *a_uio, 843 * struct ucred *a_cred) 844 */ 845 static int 846 smbfs_getextattr(struct vop_getextattr_args *ap) 847 { 848 struct vnode *vp = ap->a_vp; 849 struct ucred *cred = ap->a_cred; 850 struct uio *uio = ap->a_uio; 851 const char *name = ap->a_name; 852 struct smbnode *np = VTOSMB(vp); 853 struct vattr vattr; 854 char buf[10]; 855 int i, attr, error; 856 857 error = VOP_ACCESS(vp, VREAD, cred); 858 if (error) 859 return error; 860 error = VOP_GETATTR(vp, &vattr); 861 if (error) 862 return error; 863 if (strcmp(name, "dosattr") == 0) { 864 attr = np->n_dosattr; 865 for (i = 0; i < 6; i++, attr >>= 1) 866 buf[i] = (attr & 1) ? smbfs_atl[i] : '-'; 867 buf[i] = 0; 868 error = uiomove(buf, i, uio); 869 870 } else 871 error = EINVAL; 872 return error; 873 } 874 875 /* 876 * Since we expected to support F_GETLK (and SMB protocol has no such function), 877 * it is necessary to use lf_advlock(). It would be nice if this function had 878 * a callback mechanism because it will help to improve a level of consistency. 879 * 880 * smbfs_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, 881 * struct flock *a_fl, int a_flags) 882 */ 883 int 884 smbfs_advlock(struct vop_advlock_args *ap) 885 { 886 struct vnode *vp = ap->a_vp; 887 struct smbnode *np = VTOSMB(vp); 888 struct flock *fl = ap->a_fl; 889 caddr_t id = (caddr_t)1 /* ap->a_id */; 890 /* int flags = ap->a_flags;*/ 891 struct thread *td = curthread; /* XXX */ 892 struct smb_cred scred; 893 off_t start, end, size; 894 int error, lkop; 895 896 if (vp->v_type == VDIR) { 897 /* 898 * SMB protocol have no support for directory locking. 899 * Although locks can be processed on local machine, I don't 900 * think that this is a good idea, because some programs 901 * can work wrong assuming directory is locked. So, we just 902 * return 'operation not supported 903 */ 904 return EOPNOTSUPP; 905 } 906 size = np->n_size; 907 switch (fl->l_whence) { 908 case SEEK_SET: 909 case SEEK_CUR: 910 start = fl->l_start; 911 break; 912 case SEEK_END: 913 start = fl->l_start + size; 914 default: 915 return EINVAL; 916 } 917 if (start < 0) 918 return EINVAL; 919 if (fl->l_len == 0) 920 end = -1; 921 else { 922 end = start + fl->l_len - 1; 923 if (end < start) 924 return EINVAL; 925 } 926 smb_makescred(&scred, td, td->td_proc ? td->td_proc->p_ucred : NULL); 927 switch (ap->a_op) { 928 case F_SETLK: 929 switch (fl->l_type) { 930 case F_WRLCK: 931 lkop = SMB_LOCK_EXCL; 932 break; 933 case F_RDLCK: 934 lkop = SMB_LOCK_SHARED; 935 break; 936 case F_UNLCK: 937 lkop = SMB_LOCK_RELEASE; 938 break; 939 default: 940 return EINVAL; 941 } 942 error = lf_advlock(ap, &np->n_lockf, size); 943 if (error) 944 break; 945 lkop = SMB_LOCK_EXCL; 946 error = smbfs_smb_lock(np, lkop, id, start, end, &scred); 947 if (error) { 948 ap->a_op = F_UNLCK; 949 lf_advlock(ap, &np->n_lockf, size); 950 } 951 break; 952 case F_UNLCK: 953 lf_advlock(ap, &np->n_lockf, size); 954 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, &scred); 955 break; 956 case F_GETLK: 957 error = lf_advlock(ap, &np->n_lockf, size); 958 break; 959 default: 960 return EINVAL; 961 } 962 return error; 963 } 964 965 static int 966 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop) 967 { 968 static const char *badchars = "*/:<>;?"; 969 static const char *badchars83 = " +|,"; 970 const char *cp; 971 int i, error; 972 973 /* 974 * Backslash characters, being a path delimiter, are prohibited 975 * within a path component even for LOOKUP operations. 976 */ 977 if (index(name, '\\') != NULL) 978 return ENOENT; 979 980 if (nameiop == NAMEI_LOOKUP) 981 return 0; 982 error = ENOENT; 983 if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { 984 /* 985 * Name should conform 8.3 format 986 */ 987 if (nmlen > 12) 988 return ENAMETOOLONG; 989 cp = index(name, '.'); 990 if (cp == NULL) 991 return error; 992 if (cp == name || (cp - name) > 8) 993 return error; 994 cp = index(cp + 1, '.'); 995 if (cp != NULL) 996 return error; 997 for (cp = name, i = 0; i < nmlen; i++, cp++) 998 if (index(badchars83, *cp) != NULL) 999 return error; 1000 } 1001 for (cp = name, i = 0; i < nmlen; i++, cp++) 1002 if (index(badchars, *cp) != NULL) 1003 return error; 1004 return 0; 1005 } 1006 1007 /* 1008 * Things go even weird without fixed inode numbers... 1009 * 1010 * smbfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 1011 * struct componentname *a_cnp) 1012 */ 1013 int 1014 smbfs_lookup(struct vop_old_lookup_args *ap) 1015 { 1016 struct componentname *cnp = ap->a_cnp; 1017 struct thread *td = cnp->cn_td; 1018 struct vnode *dvp = ap->a_dvp; 1019 struct vnode **vpp = ap->a_vpp; 1020 struct vnode *vp; 1021 struct smbmount *smp; 1022 struct mount *mp = dvp->v_mount; 1023 struct smbnode *dnp; 1024 struct smbfattr fattr, *fap; 1025 struct smb_cred scred; 1026 char *name = cnp->cn_nameptr; 1027 int flags = cnp->cn_flags; 1028 int nameiop = cnp->cn_nameiop; 1029 int nmlen = cnp->cn_namelen; 1030 int lockparent, wantparent, error, isdot; 1031 1032 SMBVDEBUG("\n"); 1033 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 1034 *vpp = NULL; 1035 if (dvp->v_type != VDIR) 1036 return ENOTDIR; 1037 if ((flags & CNP_ISDOTDOT) && (dvp->v_flag & VROOT)) { 1038 SMBFSERR("invalid '..'\n"); 1039 return EIO; 1040 } 1041 #ifdef SMB_VNODE_DEBUG 1042 { 1043 char *cp, c; 1044 1045 cp = name + nmlen; 1046 c = *cp; 1047 *cp = 0; 1048 SMBVDEBUG("%d '%s' in '%s' id=d\n", nameiop, name, 1049 VTOSMB(dvp)->n_name); 1050 *cp = c; 1051 } 1052 #endif 1053 if ((mp->mnt_flag & MNT_RDONLY) && nameiop != NAMEI_LOOKUP) 1054 return EROFS; 1055 if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred)) != 0) 1056 return error; 1057 lockparent = flags & CNP_LOCKPARENT; 1058 wantparent = flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 1059 smp = VFSTOSMBFS(mp); 1060 dnp = VTOSMB(dvp); 1061 isdot = (nmlen == 1 && name[0] == '.'); 1062 1063 error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop); 1064 1065 if (error) 1066 return ENOENT; 1067 1068 error = 0; 1069 smb_makescred(&scred, td, cnp->cn_cred); 1070 fap = &fattr; 1071 if (flags & CNP_ISDOTDOT) { 1072 error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, fap, 1073 &scred); 1074 SMBVDEBUG("result of dotdot lookup: %d\n", error); 1075 } else { 1076 fap = &fattr; 1077 error = smbfs_smb_lookup(dnp, name, nmlen, fap, &scred); 1078 /* if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')*/ 1079 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error); 1080 } 1081 if (error && error != ENOENT) 1082 return error; 1083 if (error) { /* entry not found */ 1084 /* 1085 * Handle RENAME or CREATE case... 1086 */ 1087 if ((nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME) && wantparent) { 1088 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1089 if (error) 1090 return error; 1091 if (!lockparent) { 1092 vn_unlock(dvp); 1093 cnp->cn_flags |= CNP_PDIRUNLOCK; 1094 } 1095 return (EJUSTRETURN); 1096 } 1097 return ENOENT; 1098 }/* else { 1099 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum); 1100 }*/ 1101 /* 1102 * handle DELETE case ... 1103 */ 1104 if (nameiop == NAMEI_DELETE) { /* delete last component */ 1105 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1106 if (error) 1107 return error; 1108 if (isdot) { 1109 vref(dvp); 1110 *vpp = dvp; 1111 return 0; 1112 } 1113 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1114 if (error) 1115 return error; 1116 *vpp = vp; 1117 if (!lockparent) { 1118 vn_unlock(dvp); 1119 cnp->cn_flags |= CNP_PDIRUNLOCK; 1120 } 1121 return 0; 1122 } 1123 if (nameiop == NAMEI_RENAME && wantparent) { 1124 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); 1125 if (error) 1126 return error; 1127 if (isdot) 1128 return EISDIR; 1129 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1130 if (error) 1131 return error; 1132 *vpp = vp; 1133 if (!lockparent) { 1134 vn_unlock(dvp); 1135 cnp->cn_flags |= CNP_PDIRUNLOCK; 1136 } 1137 return 0; 1138 } 1139 if (flags & CNP_ISDOTDOT) { 1140 vn_unlock(dvp); 1141 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp); 1142 if (error) { 1143 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 1144 return error; 1145 } 1146 if (lockparent) { 1147 error = vn_lock(dvp, LK_EXCLUSIVE); 1148 if (error) { 1149 cnp->cn_flags |= CNP_PDIRUNLOCK; 1150 vput(vp); 1151 return error; 1152 } 1153 } 1154 *vpp = vp; 1155 } else if (isdot) { 1156 vref(dvp); 1157 *vpp = dvp; 1158 } else { 1159 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1160 if (error) 1161 return error; 1162 *vpp = vp; 1163 SMBVDEBUG("lookup: getnewvp!\n"); 1164 if (!lockparent) { 1165 vn_unlock(dvp); 1166 cnp->cn_flags |= CNP_PDIRUNLOCK; 1167 } 1168 } 1169 return 0; 1170 } 1171