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FreeBSD/Linux Kernel Cross Reference
sys/fs/smbfs/smbfs_vnops.c
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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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 #include <sys/param.h> 29 #include <sys/systm.h> 30 #include <sys/namei.h> 31 #include <sys/kernel.h> 32 #include <sys/proc.h> 33 #include <sys/bio.h> 34 #include <sys/buf.h> 35 #include <sys/fcntl.h> 36 #include <sys/mount.h> 37 #include <sys/unistd.h> 38 #include <sys/vnode.h> 39 #include <sys/limits.h> 40 #include <sys/lockf.h> 41 #include <sys/stat.h> 42 43 #include <vm/vm.h> 44 #include <vm/vm_extern.h> 45 46 47 #include <netsmb/smb.h> 48 #include <netsmb/smb_conn.h> 49 #include <netsmb/smb_subr.h> 50 51 #include <fs/smbfs/smbfs.h> 52 #include <fs/smbfs/smbfs_node.h> 53 #include <fs/smbfs/smbfs_subr.h> 54 55 /* 56 * Prototypes for SMBFS vnode operations 57 */ 58 static vop_create_t smbfs_create; 59 static vop_mknod_t smbfs_mknod; 60 static vop_open_t smbfs_open; 61 static vop_close_t smbfs_close; 62 static vop_access_t smbfs_access; 63 static vop_getattr_t smbfs_getattr; 64 static vop_setattr_t smbfs_setattr; 65 static vop_read_t smbfs_read; 66 static vop_write_t smbfs_write; 67 static vop_fsync_t smbfs_fsync; 68 static vop_remove_t smbfs_remove; 69 static vop_link_t smbfs_link; 70 static vop_lookup_t smbfs_lookup; 71 static vop_rename_t smbfs_rename; 72 static vop_mkdir_t smbfs_mkdir; 73 static vop_rmdir_t smbfs_rmdir; 74 static vop_symlink_t smbfs_symlink; 75 static vop_readdir_t smbfs_readdir; 76 static vop_strategy_t smbfs_strategy; 77 static vop_print_t smbfs_print; 78 static vop_pathconf_t smbfs_pathconf; 79 static vop_advlock_t smbfs_advlock; 80 static vop_getextattr_t smbfs_getextattr; 81 82 struct vop_vector smbfs_vnodeops = { 83 .vop_default = &default_vnodeops, 84 85 .vop_access = smbfs_access, 86 .vop_advlock = smbfs_advlock, 87 .vop_close = smbfs_close, 88 .vop_create = smbfs_create, 89 .vop_fsync = smbfs_fsync, 90 .vop_getattr = smbfs_getattr, 91 .vop_getextattr = smbfs_getextattr, 92 .vop_getpages = smbfs_getpages, 93 .vop_inactive = smbfs_inactive, 94 .vop_ioctl = smbfs_ioctl, 95 .vop_link = smbfs_link, 96 .vop_lookup = smbfs_lookup, 97 .vop_mkdir = smbfs_mkdir, 98 .vop_mknod = smbfs_mknod, 99 .vop_open = smbfs_open, 100 .vop_pathconf = smbfs_pathconf, 101 .vop_print = smbfs_print, 102 .vop_putpages = smbfs_putpages, 103 .vop_read = smbfs_read, 104 .vop_readdir = smbfs_readdir, 105 .vop_reclaim = smbfs_reclaim, 106 .vop_remove = smbfs_remove, 107 .vop_rename = smbfs_rename, 108 .vop_rmdir = smbfs_rmdir, 109 .vop_setattr = smbfs_setattr, 110 /* .vop_setextattr = smbfs_setextattr,*/ 111 .vop_strategy = smbfs_strategy, 112 .vop_symlink = smbfs_symlink, 113 .vop_write = smbfs_write, 114 }; 115 116 static int 117 smbfs_access(ap) 118 struct vop_access_args /* { 119 struct vnode *a_vp; 120 accmode_t a_accmode; 121 struct ucred *a_cred; 122 struct thread *a_td; 123 } */ *ap; 124 { 125 struct vnode *vp = ap->a_vp; 126 accmode_t accmode = ap->a_accmode; 127 mode_t mpmode; 128 struct smbmount *smp = VTOSMBFS(vp); 129 130 SMBVDEBUG("\n"); 131 if ((accmode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) { 132 switch (vp->v_type) { 133 case VREG: case VDIR: case VLNK: 134 return EROFS; 135 default: 136 break; 137 } 138 } 139 mpmode = vp->v_type == VREG ? smp->sm_file_mode : smp->sm_dir_mode; 140 return (vaccess(vp->v_type, mpmode, smp->sm_uid, 141 smp->sm_gid, ap->a_accmode, ap->a_cred, NULL)); 142 } 143 144 /* ARGSUSED */ 145 static int 146 smbfs_open(ap) 147 struct vop_open_args /* { 148 struct vnode *a_vp; 149 int a_mode; 150 struct ucred *a_cred; 151 struct thread *a_td; 152 } */ *ap; 153 { 154 struct vnode *vp = ap->a_vp; 155 struct smbnode *np = VTOSMB(vp); 156 struct smb_cred scred; 157 struct vattr vattr; 158 int mode = ap->a_mode; 159 int error, accmode; 160 161 SMBVDEBUG("%s,%d\n", np->n_name, (np->n_flag & NOPEN) != 0); 162 if (vp->v_type != VREG && vp->v_type != VDIR) { 163 SMBFSERR("open eacces vtype=%d\n", vp->v_type); 164 return EACCES; 165 } 166 if (vp->v_type == VDIR) { 167 np->n_flag |= NOPEN; 168 return 0; 169 } 170 if (np->n_flag & NMODIFIED) { 171 if ((error = smbfs_vinvalbuf(vp, ap->a_td)) == EINTR) 172 return error; 173 smbfs_attr_cacheremove(vp); 174 error = VOP_GETATTR(vp, &vattr, ap->a_cred); 175 if (error) 176 return error; 177 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 178 } else { 179 error = VOP_GETATTR(vp, &vattr, ap->a_cred); 180 if (error) 181 return error; 182 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { 183 error = smbfs_vinvalbuf(vp, ap->a_td); 184 if (error == EINTR) 185 return error; 186 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 187 } 188 } 189 if ((np->n_flag & NOPEN) != 0) 190 return 0; 191 /* 192 * Use DENYNONE to give unixy semantics of permitting 193 * everything not forbidden by permissions. Ie denial 194 * is up to server with clients/openers needing to use 195 * advisory locks for further control. 196 */ 197 accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD; 198 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 199 accmode = SMB_SM_DENYNONE|SMB_AM_OPENRW; 200 smb_makescred(&scred, ap->a_td, ap->a_cred); 201 error = smbfs_smb_open(np, accmode, &scred); 202 if (error) { 203 if (mode & FWRITE) 204 return EACCES; 205 else if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 206 accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD; 207 error = smbfs_smb_open(np, accmode, &scred); 208 } 209 } 210 if (error == 0) { 211 np->n_flag |= NOPEN; 212 vnode_create_vobject(ap->a_vp, vattr.va_size, ap->a_td); 213 } 214 smbfs_attr_cacheremove(vp); 215 return error; 216 } 217 218 static int 219 smbfs_close(ap) 220 struct vop_close_args /* { 221 struct vnodeop_desc *a_desc; 222 struct vnode *a_vp; 223 int a_fflag; 224 struct ucred *a_cred; 225 struct thread *a_td; 226 } */ *ap; 227 { 228 struct vnode *vp = ap->a_vp; 229 struct thread *td = ap->a_td; 230 struct smbnode *np = VTOSMB(vp); 231 struct smb_cred scred; 232 233 if (vp->v_type == VDIR && (np->n_flag & NOPEN) != 0 && 234 np->n_dirseq != NULL) { 235 smb_makescred(&scred, td, ap->a_cred); 236 smbfs_findclose(np->n_dirseq, &scred); 237 np->n_dirseq = NULL; 238 } 239 return 0; 240 } 241 242 /* 243 * smbfs_getattr call from vfs. 244 */ 245 static int 246 smbfs_getattr(ap) 247 struct vop_getattr_args /* { 248 struct vnode *a_vp; 249 struct vattr *a_vap; 250 struct ucred *a_cred; 251 } */ *ap; 252 { 253 struct vnode *vp = ap->a_vp; 254 struct smbnode *np = VTOSMB(vp); 255 struct vattr *va=ap->a_vap; 256 struct smbfattr fattr; 257 struct smb_cred scred; 258 u_quad_t oldsize; 259 int error; 260 261 SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_vflag & VV_ROOT) != 0); 262 error = smbfs_attr_cachelookup(vp, va); 263 if (!error) 264 return 0; 265 SMBVDEBUG("not in the cache\n"); 266 smb_makescred(&scred, curthread, ap->a_cred); 267 oldsize = np->n_size; 268 error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred); 269 if (error) { 270 SMBVDEBUG("error %d\n", error); 271 return error; 272 } 273 smbfs_attr_cacheenter(vp, &fattr); 274 smbfs_attr_cachelookup(vp, va); 275 if (np->n_flag & NOPEN) 276 np->n_size = oldsize; 277 return 0; 278 } 279 280 static int 281 smbfs_setattr(ap) 282 struct vop_setattr_args /* { 283 struct vnode *a_vp; 284 struct vattr *a_vap; 285 struct ucred *a_cred; 286 } */ *ap; 287 { 288 struct vnode *vp = ap->a_vp; 289 struct smbnode *np = VTOSMB(vp); 290 struct vattr *vap = ap->a_vap; 291 struct timespec *mtime, *atime; 292 struct smb_cred scred; 293 struct smb_share *ssp = np->n_mount->sm_share; 294 struct smb_vc *vcp = SSTOVC(ssp); 295 struct thread *td = curthread; 296 u_quad_t tsize = 0; 297 int isreadonly, doclose, error = 0; 298 int old_n_dosattr; 299 300 SMBVDEBUG("\n"); 301 if (vap->va_flags != VNOVAL) 302 return EOPNOTSUPP; 303 isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY); 304 /* 305 * Disallow write attempts if the filesystem is mounted read-only. 306 */ 307 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 308 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 309 vap->va_mode != (mode_t)VNOVAL) && isreadonly) 310 return EROFS; 311 smb_makescred(&scred, td, ap->a_cred); 312 if (vap->va_size != VNOVAL) { 313 switch (vp->v_type) { 314 case VDIR: 315 return EISDIR; 316 case VREG: 317 break; 318 default: 319 return EINVAL; 320 }; 321 if (isreadonly) 322 return EROFS; 323 doclose = 0; 324 vnode_pager_setsize(vp, (u_long)vap->va_size); 325 tsize = np->n_size; 326 np->n_size = vap->va_size; 327 if ((np->n_flag & NOPEN) == 0) { 328 error = smbfs_smb_open(np, 329 SMB_SM_DENYNONE|SMB_AM_OPENRW, 330 &scred); 331 if (error == 0) 332 doclose = 1; 333 } 334 if (error == 0) 335 error = smbfs_smb_setfsize(np, 336 (int64_t)vap->va_size, &scred); 337 if (doclose) 338 smbfs_smb_close(ssp, np->n_fid, NULL, &scred); 339 if (error) { 340 np->n_size = tsize; 341 vnode_pager_setsize(vp, (u_long)tsize); 342 return error; 343 } 344 } 345 if (vap->va_mode != (mode_t)VNOVAL) { 346 old_n_dosattr = np->n_dosattr; 347 if (vap->va_mode & S_IWUSR) 348 np->n_dosattr &= ~SMB_FA_RDONLY; 349 else 350 np->n_dosattr |= SMB_FA_RDONLY; 351 if (np->n_dosattr != old_n_dosattr) { 352 error = smbfs_smb_setpattr(np, np->n_dosattr, NULL, &scred); 353 if (error) 354 return error; 355 } 356 } 357 mtime = atime = NULL; 358 if (vap->va_mtime.tv_sec != VNOVAL) 359 mtime = &vap->va_mtime; 360 if (vap->va_atime.tv_sec != VNOVAL) 361 atime = &vap->va_atime; 362 if (mtime != atime) { 363 if (vap->va_vaflags & VA_UTIMES_NULL) { 364 error = VOP_ACCESS(vp, VADMIN, ap->a_cred, td); 365 if (error) 366 error = VOP_ACCESS(vp, VWRITE, ap->a_cred, td); 367 } else 368 error = VOP_ACCESS(vp, VADMIN, ap->a_cred, td); 369 #if 0 370 if (mtime == NULL) 371 mtime = &np->n_mtime; 372 if (atime == NULL) 373 atime = &np->n_atime; 374 #endif 375 /* 376 * If file is opened, then we can use handle based calls. 377 * If not, use path based ones. 378 */ 379 if ((np->n_flag & NOPEN) == 0) { 380 if (vcp->vc_flags & SMBV_WIN95) { 381 error = VOP_OPEN(vp, FWRITE, ap->a_cred, td, 382 NULL); 383 if (!error) { 384 /* error = smbfs_smb_setfattrNT(np, 0, 385 mtime, atime, &scred); 386 VOP_GETATTR(vp, &vattr, ap->a_cred); */ 387 if (mtime) 388 np->n_mtime = *mtime; 389 VOP_CLOSE(vp, FWRITE, ap->a_cred, td); 390 } 391 } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) { 392 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 393 /* error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);*/ 394 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) { 395 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 396 } else { 397 error = smbfs_smb_setpattr(np, 0, mtime, &scred); 398 } 399 } else { 400 if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) { 401 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 402 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) { 403 error = smbfs_smb_setftime(np, mtime, atime, &scred); 404 } else { 405 /* 406 * I have no idea how to handle this for core 407 * level servers. The possible solution is to 408 * update mtime after file is closed. 409 */ 410 SMBERROR("can't update times on an opened file\n"); 411 } 412 } 413 } 414 /* 415 * Invalidate attribute cache in case if server doesn't set 416 * required attributes. 417 */ 418 smbfs_attr_cacheremove(vp); /* invalidate cache */ 419 VOP_GETATTR(vp, vap, ap->a_cred); 420 np->n_mtime.tv_sec = vap->va_mtime.tv_sec; 421 return error; 422 } 423 /* 424 * smbfs_read call. 425 */ 426 static int 427 smbfs_read(ap) 428 struct vop_read_args /* { 429 struct vnode *a_vp; 430 struct uio *a_uio; 431 int a_ioflag; 432 struct ucred *a_cred; 433 } */ *ap; 434 { 435 struct vnode *vp = ap->a_vp; 436 struct uio *uio = ap->a_uio; 437 438 SMBVDEBUG("\n"); 439 if (vp->v_type != VREG && vp->v_type != VDIR) 440 return EPERM; 441 return smbfs_readvnode(vp, uio, ap->a_cred); 442 } 443 444 static int 445 smbfs_write(ap) 446 struct vop_write_args /* { 447 struct vnode *a_vp; 448 struct uio *a_uio; 449 int a_ioflag; 450 struct ucred *a_cred; 451 } */ *ap; 452 { 453 struct vnode *vp = ap->a_vp; 454 struct uio *uio = ap->a_uio; 455 456 SMBVDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid); 457 if (vp->v_type != VREG) 458 return (EPERM); 459 return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag); 460 } 461 /* 462 * smbfs_create call 463 * Create a regular file. On entry the directory to contain the file being 464 * created is locked. We must release before we return. We must also free 465 * the pathname buffer pointed at by cnp->cn_pnbuf, always on error, or 466 * only if the SAVESTART bit in cn_flags is clear on success. 467 */ 468 static int 469 smbfs_create(ap) 470 struct vop_create_args /* { 471 struct vnode *a_dvp; 472 struct vnode **a_vpp; 473 struct componentname *a_cnp; 474 struct vattr *a_vap; 475 } */ *ap; 476 { 477 struct vnode *dvp = ap->a_dvp; 478 struct vattr *vap = ap->a_vap; 479 struct vnode **vpp=ap->a_vpp; 480 struct componentname *cnp = ap->a_cnp; 481 struct smbnode *dnp = VTOSMB(dvp); 482 struct vnode *vp; 483 struct vattr vattr; 484 struct smbfattr fattr; 485 struct smb_cred scred; 486 char *name = cnp->cn_nameptr; 487 int nmlen = cnp->cn_namelen; 488 int error; 489 490 491 SMBVDEBUG("\n"); 492 *vpp = NULL; 493 if (vap->va_type != VREG) 494 return EOPNOTSUPP; 495 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred))) 496 return error; 497 smb_makescred(&scred, cnp->cn_thread, cnp->cn_cred); 498 499 error = smbfs_smb_create(dnp, name, nmlen, &scred); 500 if (error) 501 return error; 502 error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); 503 if (error) 504 return error; 505 error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp); 506 if (error) 507 return error; 508 *vpp = vp; 509 if (cnp->cn_flags & MAKEENTRY) 510 cache_enter(dvp, vp, cnp); 511 return error; 512 } 513 514 static int 515 smbfs_remove(ap) 516 struct vop_remove_args /* { 517 struct vnodeop_desc *a_desc; 518 struct vnode * a_dvp; 519 struct vnode * a_vp; 520 struct componentname * a_cnp; 521 } */ *ap; 522 { 523 struct vnode *vp = ap->a_vp; 524 /* struct vnode *dvp = ap->a_dvp;*/ 525 struct componentname *cnp = ap->a_cnp; 526 struct smbnode *np = VTOSMB(vp); 527 struct smb_cred scred; 528 int error; 529 530 if (vp->v_type == VDIR || (np->n_flag & NOPEN) != 0 || vrefcnt(vp) != 1) 531 return EPERM; 532 smb_makescred(&scred, cnp->cn_thread, cnp->cn_cred); 533 error = smbfs_smb_delete(np, &scred); 534 if (error == 0) 535 np->n_flag |= NGONE; 536 cache_purge(vp); 537 return error; 538 } 539 540 /* 541 * smbfs_file rename call 542 */ 543 static int 544 smbfs_rename(ap) 545 struct vop_rename_args /* { 546 struct vnode *a_fdvp; 547 struct vnode *a_fvp; 548 struct componentname *a_fcnp; 549 struct vnode *a_tdvp; 550 struct vnode *a_tvp; 551 struct componentname *a_tcnp; 552 } */ *ap; 553 { 554 struct vnode *fvp = ap->a_fvp; 555 struct vnode *tvp = ap->a_tvp; 556 struct vnode *fdvp = ap->a_fdvp; 557 struct vnode *tdvp = ap->a_tdvp; 558 struct componentname *tcnp = ap->a_tcnp; 559 /* struct componentname *fcnp = ap->a_fcnp;*/ 560 struct smb_cred scred; 561 u_int16_t flags = 6; 562 int error=0; 563 564 /* Check for cross-device rename */ 565 if ((fvp->v_mount != tdvp->v_mount) || 566 (tvp && (fvp->v_mount != tvp->v_mount))) { 567 error = EXDEV; 568 goto out; 569 } 570 571 if (tvp && vrefcnt(tvp) > 1) { 572 error = EBUSY; 573 goto out; 574 } 575 flags = 0x10; /* verify all writes */ 576 if (fvp->v_type == VDIR) { 577 flags |= 2; 578 } else if (fvp->v_type == VREG) { 579 flags |= 1; 580 } else { 581 error = EINVAL; 582 goto out; 583 } 584 smb_makescred(&scred, tcnp->cn_thread, tcnp->cn_cred); 585 /* 586 * It seems that Samba doesn't implement SMB_COM_MOVE call... 587 */ 588 #ifdef notnow 589 if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { 590 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp), 591 tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); 592 } else 593 #endif 594 { 595 /* 596 * We have to do the work atomicaly 597 */ 598 if (tvp && tvp != fvp) { 599 error = smbfs_smb_delete(VTOSMB(tvp), &scred); 600 if (error) 601 goto out_cacherem; 602 VTOSMB(fvp)->n_flag |= NGONE; 603 } 604 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp), 605 tcnp->cn_nameptr, tcnp->cn_namelen, &scred); 606 } 607 608 if (fvp->v_type == VDIR) { 609 if (tvp != NULL && tvp->v_type == VDIR) 610 cache_purge(tdvp); 611 cache_purge(fdvp); 612 } 613 614 out_cacherem: 615 smbfs_attr_cacheremove(fdvp); 616 smbfs_attr_cacheremove(tdvp); 617 out: 618 if (tdvp == tvp) 619 vrele(tdvp); 620 else 621 vput(tdvp); 622 if (tvp) 623 vput(tvp); 624 vrele(fdvp); 625 vrele(fvp); 626 #ifdef possible_mistake 627 vgone(fvp); 628 if (tvp) 629 vgone(tvp); 630 #endif 631 return error; 632 } 633 634 /* 635 * somtime it will come true... 636 */ 637 static int 638 smbfs_link(ap) 639 struct vop_link_args /* { 640 struct vnode *a_tdvp; 641 struct vnode *a_vp; 642 struct componentname *a_cnp; 643 } */ *ap; 644 { 645 return EOPNOTSUPP; 646 } 647 648 /* 649 * smbfs_symlink link create call. 650 * Sometime it will be functional... 651 */ 652 static int 653 smbfs_symlink(ap) 654 struct vop_symlink_args /* { 655 struct vnode *a_dvp; 656 struct vnode **a_vpp; 657 struct componentname *a_cnp; 658 struct vattr *a_vap; 659 char *a_target; 660 } */ *ap; 661 { 662 return EOPNOTSUPP; 663 } 664 665 static int 666 smbfs_mknod(ap) 667 struct vop_mknod_args /* { 668 } */ *ap; 669 { 670 return EOPNOTSUPP; 671 } 672 673 static int 674 smbfs_mkdir(ap) 675 struct vop_mkdir_args /* { 676 struct vnode *a_dvp; 677 struct vnode **a_vpp; 678 struct componentname *a_cnp; 679 struct vattr *a_vap; 680 } */ *ap; 681 { 682 struct vnode *dvp = ap->a_dvp; 683 /* struct vattr *vap = ap->a_vap;*/ 684 struct vnode *vp; 685 struct componentname *cnp = ap->a_cnp; 686 struct smbnode *dnp = VTOSMB(dvp); 687 struct vattr vattr; 688 struct smb_cred scred; 689 struct smbfattr fattr; 690 char *name = cnp->cn_nameptr; 691 int len = cnp->cn_namelen; 692 int error; 693 694 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred))) { 695 return error; 696 } 697 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) 698 return EEXIST; 699 smb_makescred(&scred, cnp->cn_thread, cnp->cn_cred); 700 error = smbfs_smb_mkdir(dnp, name, len, &scred); 701 if (error) 702 return error; 703 error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred); 704 if (error) 705 return error; 706 error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); 707 if (error) 708 return error; 709 *ap->a_vpp = vp; 710 return 0; 711 } 712 713 /* 714 * smbfs_remove directory call 715 */ 716 static int 717 smbfs_rmdir(ap) 718 struct vop_rmdir_args /* { 719 struct vnode *a_dvp; 720 struct vnode *a_vp; 721 struct componentname *a_cnp; 722 } */ *ap; 723 { 724 struct vnode *vp = ap->a_vp; 725 struct vnode *dvp = ap->a_dvp; 726 struct componentname *cnp = ap->a_cnp; 727 /* struct smbmount *smp = VTOSMBFS(vp);*/ 728 struct smbnode *dnp = VTOSMB(dvp); 729 struct smbnode *np = VTOSMB(vp); 730 struct smb_cred scred; 731 int error; 732 733 if (dvp == vp) 734 return EINVAL; 735 736 smb_makescred(&scred, cnp->cn_thread, cnp->cn_cred); 737 error = smbfs_smb_rmdir(np, &scred); 738 if (error == 0) 739 np->n_flag |= NGONE; 740 dnp->n_flag |= NMODIFIED; 741 smbfs_attr_cacheremove(dvp); 742 /* cache_purge(dvp);*/ 743 cache_purge(vp); 744 return error; 745 } 746 747 /* 748 * smbfs_readdir call 749 */ 750 static int 751 smbfs_readdir(ap) 752 struct vop_readdir_args /* { 753 struct vnode *a_vp; 754 struct uio *a_uio; 755 struct ucred *a_cred; 756 int *a_eofflag; 757 u_long *a_cookies; 758 int a_ncookies; 759 } */ *ap; 760 { 761 struct vnode *vp = ap->a_vp; 762 struct uio *uio = ap->a_uio; 763 int error; 764 765 if (vp->v_type != VDIR) 766 return (EPERM); 767 #ifdef notnow 768 if (ap->a_ncookies) { 769 printf("smbfs_readdir: no support for cookies now..."); 770 return (EOPNOTSUPP); 771 } 772 #endif 773 error = smbfs_readvnode(vp, uio, ap->a_cred); 774 return error; 775 } 776 777 /* ARGSUSED */ 778 static int 779 smbfs_fsync(ap) 780 struct vop_fsync_args /* { 781 struct vnodeop_desc *a_desc; 782 struct vnode * a_vp; 783 struct ucred * a_cred; 784 int a_waitfor; 785 struct thread * a_td; 786 } */ *ap; 787 { 788 /* return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_td, 1));*/ 789 return (0); 790 } 791 792 static 793 int smbfs_print (ap) 794 struct vop_print_args /* { 795 struct vnode *a_vp; 796 } */ *ap; 797 { 798 struct vnode *vp = ap->a_vp; 799 struct smbnode *np = VTOSMB(vp); 800 801 if (np == NULL) { 802 printf("no smbnode data\n"); 803 return (0); 804 } 805 printf("\tname = %s, parent = %p, open = %d\n", np->n_name, 806 np->n_parent ? np->n_parent : NULL, (np->n_flag & NOPEN) != 0); 807 return (0); 808 } 809 810 static int 811 smbfs_pathconf (ap) 812 struct vop_pathconf_args /* { 813 struct vnode *vp; 814 int name; 815 register_t *retval; 816 } */ *ap; 817 { 818 struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp)); 819 struct smb_vc *vcp = SSTOVC(smp->sm_share); 820 register_t *retval = ap->a_retval; 821 int error = 0; 822 823 switch (ap->a_name) { 824 case _PC_LINK_MAX: 825 *retval = 0; 826 break; 827 case _PC_NAME_MAX: 828 *retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12; 829 break; 830 case _PC_PATH_MAX: 831 *retval = 800; /* XXX: a correct one ? */ 832 break; 833 default: 834 error = EINVAL; 835 } 836 return error; 837 } 838 839 static int 840 smbfs_strategy (ap) 841 struct vop_strategy_args /* { 842 struct buf *a_bp 843 } */ *ap; 844 { 845 struct buf *bp=ap->a_bp; 846 struct ucred *cr; 847 struct thread *td; 848 849 SMBVDEBUG("\n"); 850 if (bp->b_flags & B_ASYNC) 851 td = (struct thread *)0; 852 else 853 td = curthread; /* XXX */ 854 if (bp->b_iocmd == BIO_READ) 855 cr = bp->b_rcred; 856 else 857 cr = bp->b_wcred; 858 859 if ((bp->b_flags & B_ASYNC) == 0 ) 860 (void)smbfs_doio(ap->a_vp, bp, cr, td); 861 return (0); 862 } 863 864 int 865 smbfs_ioctl(ap) 866 struct vop_ioctl_args /* { 867 struct vnode *a_vp; 868 u_long a_command; 869 caddr_t a_data; 870 int fflag; 871 struct ucred *cred; 872 struct thread *td; 873 } */ *ap; 874 { 875 return ENOTTY; 876 } 877 878 static char smbfs_atl[] = "rhsvda"; 879 static int 880 smbfs_getextattr(struct vop_getextattr_args *ap) 881 /* { 882 IN struct vnode *a_vp; 883 IN char *a_name; 884 INOUT struct uio *a_uio; 885 IN struct ucred *a_cred; 886 IN struct thread *a_td; 887 }; 888 */ 889 { 890 struct vnode *vp = ap->a_vp; 891 struct thread *td = ap->a_td; 892 struct ucred *cred = ap->a_cred; 893 struct uio *uio = ap->a_uio; 894 const char *name = ap->a_name; 895 struct smbnode *np = VTOSMB(vp); 896 struct vattr vattr; 897 char buf[10]; 898 int i, attr, error; 899 900 error = VOP_ACCESS(vp, VREAD, cred, td); 901 if (error) 902 return error; 903 error = VOP_GETATTR(vp, &vattr, cred); 904 if (error) 905 return error; 906 if (strcmp(name, "dosattr") == 0) { 907 attr = np->n_dosattr; 908 for (i = 0; i < 6; i++, attr >>= 1) 909 buf[i] = (attr & 1) ? smbfs_atl[i] : '-'; 910 buf[i] = 0; 911 error = uiomove(buf, i, uio); 912 913 } else 914 error = EINVAL; 915 return error; 916 } 917 918 /* 919 * Since we expected to support F_GETLK (and SMB protocol has no such function), 920 * it is necessary to use lf_advlock(). It would be nice if this function had 921 * a callback mechanism because it will help to improve a level of consistency. 922 */ 923 int 924 smbfs_advlock(ap) 925 struct vop_advlock_args /* { 926 struct vnode *a_vp; 927 caddr_t a_id; 928 int a_op; 929 struct flock *a_fl; 930 int a_flags; 931 } */ *ap; 932 { 933 struct vnode *vp = ap->a_vp; 934 struct smbnode *np = VTOSMB(vp); 935 struct flock *fl = ap->a_fl; 936 caddr_t id = (caddr_t)1 /* ap->a_id */; 937 /* int flags = ap->a_flags;*/ 938 struct thread *td = curthread; 939 struct smb_cred scred; 940 u_quad_t size; 941 off_t start, end, oadd; 942 int error, lkop; 943 944 if (vp->v_type == VDIR) { 945 /* 946 * SMB protocol have no support for directory locking. 947 * Although locks can be processed on local machine, I don't 948 * think that this is a good idea, because some programs 949 * can work wrong assuming directory is locked. So, we just 950 * return 'operation not supported 951 */ 952 return EOPNOTSUPP; 953 } 954 size = np->n_size; 955 switch (fl->l_whence) { 956 957 case SEEK_SET: 958 case SEEK_CUR: 959 start = fl->l_start; 960 break; 961 962 case SEEK_END: 963 if (size > OFF_MAX || 964 (fl->l_start > 0 && size > OFF_MAX - fl->l_start)) 965 return EOVERFLOW; 966 start = size + fl->l_start; 967 break; 968 969 default: 970 return EINVAL; 971 } 972 if (start < 0) 973 return EINVAL; 974 if (fl->l_len < 0) { 975 if (start == 0) 976 return EINVAL; 977 end = start - 1; 978 start += fl->l_len; 979 if (start < 0) 980 return EINVAL; 981 } else if (fl->l_len == 0) 982 end = -1; 983 else { 984 oadd = fl->l_len - 1; 985 if (oadd > OFF_MAX - start) 986 return EOVERFLOW; 987 end = start + oadd; 988 } 989 smb_makescred(&scred, td, td->td_ucred); 990 switch (ap->a_op) { 991 case F_SETLK: 992 switch (fl->l_type) { 993 case F_WRLCK: 994 lkop = SMB_LOCK_EXCL; 995 break; 996 case F_RDLCK: 997 lkop = SMB_LOCK_SHARED; 998 break; 999 case F_UNLCK: 1000 lkop = SMB_LOCK_RELEASE; 1001 break; 1002 default: 1003 return EINVAL; 1004 } 1005 error = lf_advlock(ap, &vp->v_lockf, size); 1006 if (error) 1007 break; 1008 lkop = SMB_LOCK_EXCL; 1009 error = smbfs_smb_lock(np, lkop, id, start, end, &scred); 1010 if (error) { 1011 int oldtype = fl->l_type; 1012 fl->l_type = F_UNLCK; 1013 ap->a_op = F_UNLCK; 1014 lf_advlock(ap, &vp->v_lockf, size); 1015 fl->l_type = oldtype; 1016 } 1017 break; 1018 case F_UNLCK: 1019 lf_advlock(ap, &vp->v_lockf, size); 1020 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, &scred); 1021 break; 1022 case F_GETLK: 1023 error = lf_advlock(ap, &vp->v_lockf, size); 1024 break; 1025 default: 1026 return EINVAL; 1027 } 1028 return error; 1029 } 1030 1031 static int 1032 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop) 1033 { 1034 static const char *badchars = "*/:<>;?"; 1035 static const char *badchars83 = " +|,[]="; 1036 const char *cp; 1037 int i, error; 1038 1039 /* 1040 * Backslash characters, being a path delimiter, are prohibited 1041 * within a path component even for LOOKUP operations. 1042 */ 1043 if (index(name, '\\') != NULL) 1044 return ENOENT; 1045 1046 if (nameiop == LOOKUP) 1047 return 0; 1048 error = ENOENT; 1049 if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { 1050 /* 1051 * Name should conform 8.3 format 1052 */ 1053 if (nmlen > 12) 1054 return ENAMETOOLONG; 1055 cp = index(name, '.'); 1056 if (cp == NULL) 1057 return error; 1058 if (cp == name || (cp - name) > 8) 1059 return error; 1060 cp = index(cp + 1, '.'); 1061 if (cp != NULL) 1062 return error; 1063 for (cp = name, i = 0; i < nmlen; i++, cp++) 1064 if (index(badchars83, *cp) != NULL) 1065 return error; 1066 } 1067 for (cp = name, i = 0; i < nmlen; i++, cp++) 1068 if (index(badchars, *cp) != NULL) 1069 return error; 1070 return 0; 1071 } 1072 1073 /* 1074 * Things go even weird without fixed inode numbers... 1075 */ 1076 int 1077 smbfs_lookup(ap) 1078 struct vop_lookup_args /* { 1079 struct vnodeop_desc *a_desc; 1080 struct vnode *a_dvp; 1081 struct vnode **a_vpp; 1082 struct componentname *a_cnp; 1083 } */ *ap; 1084 { 1085 struct componentname *cnp = ap->a_cnp; 1086 struct thread *td = cnp->cn_thread; 1087 struct vnode *dvp = ap->a_dvp; 1088 struct vnode **vpp = ap->a_vpp; 1089 struct vnode *vp; 1090 struct smbmount *smp; 1091 struct mount *mp = dvp->v_mount; 1092 struct smbnode *dnp; 1093 struct smbfattr fattr, *fap; 1094 struct smb_cred scred; 1095 char *name = cnp->cn_nameptr; 1096 int flags = cnp->cn_flags; 1097 int nameiop = cnp->cn_nameiop; 1098 int nmlen = cnp->cn_namelen; 1099 int error, islastcn, isdot; 1100 int killit; 1101 1102 SMBVDEBUG("\n"); 1103 if (dvp->v_type != VDIR) 1104 return ENOTDIR; 1105 if ((flags & ISDOTDOT) && (dvp->v_vflag & VV_ROOT)) { 1106 SMBFSERR("invalid '..'\n"); 1107 return EIO; 1108 } 1109 #ifdef SMB_VNODE_DEBUG 1110 { 1111 char *cp, c; 1112 1113 cp = name + nmlen; 1114 c = *cp; 1115 *cp = 0; 1116 SMBVDEBUG("%d '%s' in '%s' id=d\n", nameiop, name, 1117 VTOSMB(dvp)->n_name); 1118 *cp = c; 1119 } 1120 #endif 1121 islastcn = flags & ISLASTCN; 1122 if (islastcn && (mp->mnt_flag & MNT_RDONLY) && (nameiop != LOOKUP)) 1123 return EROFS; 1124 if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, td)) != 0) 1125 return error; 1126 smp = VFSTOSMBFS(mp); 1127 dnp = VTOSMB(dvp); 1128 isdot = (nmlen == 1 && name[0] == '.'); 1129 1130 error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop); 1131 1132 if (error) 1133 return ENOENT; 1134 1135 error = cache_lookup(dvp, vpp, cnp); 1136 SMBVDEBUG("cache_lookup returned %d\n", error); 1137 if (error > 0) 1138 return error; 1139 if (error) { /* name was found */ 1140 struct vattr vattr; 1141 1142 killit = 0; 1143 vp = *vpp; 1144 error = VOP_GETATTR(vp, &vattr, cnp->cn_cred); 1145 /* 1146 * If the file type on the server is inconsistent 1147 * with what it was when we created the vnode, 1148 * kill the bogus vnode now and fall through to 1149 * the code below to create a new one with the 1150 * right type. 1151 */ 1152 if (error == 0 && 1153 ((vp->v_type == VDIR && 1154 (VTOSMB(vp)->n_dosattr & SMB_FA_DIR) == 0) || 1155 (vp->v_type == VREG && 1156 (VTOSMB(vp)->n_dosattr & SMB_FA_DIR) != 0))) 1157 killit = 1; 1158 else if (error == 0 1159 /* && vattr.va_ctime.tv_sec == VTOSMB(vp)->n_ctime*/) { 1160 if (nameiop != LOOKUP && islastcn) 1161 cnp->cn_flags |= SAVENAME; 1162 SMBVDEBUG("use cached vnode\n"); 1163 return (0); 1164 } 1165 cache_purge(vp); 1166 /* 1167 * XXX This is not quite right, if '.' is 1168 * inconsistent, we really need to start the lookup 1169 * all over again. Hopefully there is some other 1170 * guarantee that prevents this case from happening. 1171 */ 1172 if (killit && vp != dvp) 1173 vgone(vp); 1174 if (vp != dvp) 1175 vput(vp); 1176 else 1177 vrele(vp); 1178 *vpp = NULLVP; 1179 } 1180 /* 1181 * entry is not in the cache or has been expired 1182 */ 1183 error = 0; 1184 *vpp = NULLVP; 1185 smb_makescred(&scred, td, cnp->cn_cred); 1186 fap = &fattr; 1187 if (flags & ISDOTDOT) { 1188 error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, fap, 1189 &scred); 1190 SMBVDEBUG("result of dotdot lookup: %d\n", error); 1191 } else { 1192 fap = &fattr; 1193 error = smbfs_smb_lookup(dnp, name, nmlen, fap, &scred); 1194 /* if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')*/ 1195 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error); 1196 } 1197 if (error && error != ENOENT) 1198 return error; 1199 if (error) { /* entry not found */ 1200 /* 1201 * Handle RENAME or CREATE case... 1202 */ 1203 if ((nameiop == CREATE || nameiop == RENAME) && islastcn) { 1204 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td); 1205 if (error) 1206 return error; 1207 cnp->cn_flags |= SAVENAME; 1208 return (EJUSTRETURN); 1209 } 1210 return ENOENT; 1211 }/* else { 1212 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum); 1213 }*/ 1214 /* 1215 * handle DELETE case ... 1216 */ 1217 if (nameiop == DELETE && islastcn) { /* delete last component */ 1218 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td); 1219 if (error) 1220 return error; 1221 if (isdot) { 1222 VREF(dvp); 1223 *vpp = dvp; 1224 return 0; 1225 } 1226 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1227 if (error) 1228 return error; 1229 *vpp = vp; 1230 cnp->cn_flags |= SAVENAME; 1231 return 0; 1232 } 1233 if (nameiop == RENAME && islastcn) { 1234 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td); 1235 if (error) 1236 return error; 1237 if (isdot) 1238 return EISDIR; 1239 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1240 if (error) 1241 return error; 1242 *vpp = vp; 1243 cnp->cn_flags |= SAVENAME; 1244 return 0; 1245 } 1246 if (flags & ISDOTDOT) { 1247 VOP_UNLOCK(dvp, 0); 1248 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp); 1249 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 1250 if (error) 1251 return error; 1252 *vpp = vp; 1253 } else if (isdot) { 1254 vref(dvp); 1255 *vpp = dvp; 1256 } else { 1257 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1258 if (error) 1259 return error; 1260 *vpp = vp; 1261 SMBVDEBUG("lookup: getnewvp!\n"); 1262 } 1263 if ((cnp->cn_flags & MAKEENTRY)/* && !islastcn*/) { 1264 /* VTOSMB(*vpp)->n_ctime = VTOSMB(*vpp)->n_vattr.va_ctime.tv_sec;*/ 1265 cache_enter(dvp, *vpp, cnp); 1266 } 1267 return 0; 1268 }
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